EXHIBIT 9

Case 2:24-cv-00080-JRG Document 57-10 Filed 10/17/24 Page 1 of 25 PageID #: 1441
US011267596B2 

( 12 ) United States Patent ( 10 ) Patent No .: US 11,267,596 B2 

Finzo et al . ( 45 ) Date of Patent : Mar. 8 , 2022 

( 54 ) STRAPPING DEVICE HAVING A 

PIVOTABLE ROCKER 

( 58 ) Field of Classification Search 

CPC B65B 13/02 ; B65B 13/025 ; B65B 13/18 ; 

B65B 13/187 ; B65B 13/22 , B65B 13/32 ; 

B65B 13/322 

( Continued ) 

( 71 ) Applicant : Signode Industrial Group LLC , Glenview , IL ( US ) 

( 56 ) References Cited ( 72 ) Inventors : Flavio Finzo , Wurenlos ( CH ) ; Mirco 

Neeser , Ehrendingen ( CH ) ; Dimitrios 

Takidis , Dubendorf ( CH ) U.S. PATENT DOCUMENTS 

3,367,374 A ( 73 ) Assignee : Signode Industrial Group LLC , 3,654,033 A 

Tampa , FL ( US ) 

2/1968 Meier et al . 4/1972 Angarola et al . 

( Continued ) 

( * ) Notice : Subject to any disclaimer , the term of this FOREIGN PATENT DOCUMENTS 

patent is extended or adjusted under 35 

U.S.C. 154 ( b ) by 301 days . CA 

CH 

2432353 A1 12/2003 

705745 A2 5/2013 

( 21 ) Appl . No .: 16 / 448,167 ( Continued ) 

( 22 ) Filed : Jun . 21 , 2019 OTHER PUBLICATIONS 

( 65 ) Prior Publication Data 

US 2019/0300214 A1 Oct. 3 , 2019 

" International Search Report and Written Opinion ” , International 

Application No. PCT / IB2013 / 002116 ( 8 pages ) , dated Jun . 30 , 2014 . 

( Continued ) 

Related U.S. Application Data 

( 60 ) Continuation of application No. 15 / 910,346 , filed on 

Mar. 2 , 2018 , now Pat . No. 10,370,132 , which is a 

( Continued ) 

Primary Examiner — Jimmy T Nguyen 

( 74 ) Attorney , Agent ,or Firm — Neal , Gerber & Eisenberg LLP 

( 30 ) Foreign Application Priority Data 

Sep. 24 , 2012 

Sep. 24 , 2012 

( CH ) 

( CH ) 

CH1723 / 12 

CH1724 / 12 

( 51 ) Int . Cl . B65B 13/22 

B65B 13/32 

( 2006.01 ) 

( 2006.01 ) 

( Continued ) 

( 57 ) ABSTRACT 

Various embodiments of the present disclosure provide a mobile strapping device for strapping packaged products using a loop of wrapping strap . The strapping device 

includes a tensioning device for applying tension to the strap and a connecting device for connecting two overlapping portions of the strap . The tensioning device includes a rotatable tensioning wheel and a tensioning plate . The tensioning wheel is supported by a rocker that is pivotable to change a distance separating the tensioning wheel and the tensioning plate . The mobile strapping device includes a 

motor that is operably connectable to the rocker or the 

tensioning wheel such that the motor causes pivoting of the 

( Continued ) 

( 52 ) U.S. Ci . CPC B65B 13/22 ( 2013.01 ) ; B65B 13/02 

( 2013.01 ) ; B65B 13/025 ( 2013.01 ) ; 

( Continued ) 

M 

112 152 

- 151 

80a -87 

-? 

113 

80b 

B 

89 

80 

Case 2:24-cv-00080-JRG Document 57-10 Filed 10/17/24 Page 2 of 25 PageID #: 1442
US 11,267,596 B2 

Page 2 

rocker or rotation of the tensioning wheel when operating in 

a first direction of rotation . In various embodiments , gear ing , including a plurality of planetary gear sets , is used to 

operatively connect the motor to the rocker and the tension 

ing wheel . 

20 Claims , 10 Drawing Sheets 

Related U.S. Application Data 

division of application No. 14 / 430,163 , filed as ap plication No. PCT / IB2013 / 002116 on Sep. 24 , 2013 , now Pat . No. 9,938,029 . 

( 51 ) Int . Cl . B65B 13/02 ( 2006.01 ) 

B65B 13/18 ( 2006.01 ) 

( 52 ) U.S. Cl . CPC B65B 13/187 ( 2013.01 ) ; B65B 13/32 

( 2013.01 ) ; B65B 13/322 ( 2013.01 ) 

( 58 ) Field of Classification Search 

USPC 100/29 , 32 

See application file for complete search history . 

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Page 3 

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Case 2:24-cv-00080-JRG Document 57-10 Filed 10/17/24 Page 4 of 25 PageID #: 1444
U.S. Patent Mar. 8 , 2022 Sheet 1 of 10 US 11,267,596 B2 

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M 

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Case 2:24-cv-00080-JRG Document 57-10 Filed 10/17/24 Page 9 of 25 PageID #: 1449
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O 117 80b 

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Case 2:24-cv-00080-JRG Document 57-10 Filed 10/17/24 Page 12 of 25 PageID #: 1452
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Case 2:24-cv-00080-JRG Document 57-10 Filed 10/17/24 Page 13 of 25 PageID #: 1453
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Case 2:24-cv-00080-JRG Document 57-10 Filed 10/17/24 Page 14 of 25 PageID #: 1454
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US 11,267,596 B2 

1 2 

STRAPPING DEVICE HAVING A a strap about any given packaged goods and produce a 

PIVOTABLE ROCKER closure is generally provided by an electric storage battery 

or by pressurized air in the case of known strapping devices . PRIORITY CLAIM This energy produces the strap tension applied by way of the 

5 tensioning apparatus to the strap and a closure on the strap . This application is a continuation application of , claims Furthermore , such strapping devices are configured to join priority to and the benefit of U.S. patent application Ser . No. together only weldable plastic straps . 15 / 910,346 , filed on Mar. 2 , 2018 , which is a divisional For mobile devices , a low weight is of special importance , application of , claims priority to and the benefit of U.S. in order to physically burden the user of the strapping device 

patent application Ser . No. 14 / 430,163 , filed on Mar. 20 , 10 as little as possible when using the device . Likewise , for 

2015 as 371 ( c ) application of PCT / IB2013 / 002116 , filed ergonomic reasons , the weight should be distributed as 

on Sep. 24 , 2013 , now U.S. Pat . No. 9,938,029 , granted Apr. uniformly as possible over the entire strapping device , 10 , 2018 , which claims priority to and the benefit of Swit- especially in order to avoid a concentration of weight in the 

zerland Patent Application No. 1723/12 , filed on Sep. 24 , head region of the strapping device . Such a concentration 

2012 , and Switzerland Patent Application No. 1724/12 , filed 15 results in difficult handling of the device . Furthermore , the 

on Sep. 24 , 2012 , the entire contents of each of which are most ergonomical and user - friendly handling of the strap incorporated herein by reference . ping device is always desired . In particular , the possibility of 

wrong operation and malfunction should be kept as low as 

BACKGROUND possible . In strapping devices of this kind , moreover , it should be 

The present disclosure concerns a strapping device , such ensured as a further aspect of functional safety that even 

as a mobile strapping device , for strapping packaged goods after achieving rather high strap tensions little or no slip by way of a strap , which has a tensioning apparatus for occurs between the tensioning wheel and the strap . Slip , on applying a strap tension to a loop of a strap , wherein the the one hand , can prevent the achieving of the possible strap tensioning apparatus is provided with a tensioning wheel 25 tension values . But slip can also cause a longer time for the which can be rotationally driven about a tensioning axis in tensioning process and thus the overall strapping process . a motorized manner , being configured to engage with the Moreover , due to the longer time of use of the particular strap , the tensioning apparatus furthermore having a ten- strapping device per strapping operation and thus also the sioning plate , wherein it is provided during a strapping amount of energy needed per strapping operation , slip can 

process performed by the tensioning apparatus that a one or 30 also reduce the number of strapping operations for a single two - ply segment of strap is located between the tensioning charge of the storage battery Finally , slip also means that the 

wheel and the tensioning plate and makes contact with both desired strap tension value might not be achieved and thus the tensioning wheel and the tensioning plate , and moreover the strap is not sufficiently taut , which can constitute a safety the tensioning wheel and / or the tensioning plate is arranged risk . In order to avoid slip as much as possible or at least 

on a rocker which can pivot in a motorized manner about a 35 reduce it , the tensioning wheel is usually provided with teeth 

rocker axis in order to either increase or decrease a distance and pressed by a force against the tensioning plate . The 

between the tensioning wheel and the tensioning plate by pressing force for this in known solutions can result from a 

way of a pivoting motion , as well as a connecting device to spring by which the rocker with the tensioning wheel produce a permanent connection , especially a welded con- arranged on it is pressed against the strap and the tensioning nection , at two superimposed regions of the loop of strap by 40 plate located underneath . However , these solutions cannot 

way of a connecting element , such as a welded element , be satisfactory , especially when higher strap tensions need to which is provided for the local heating of the strap be generated , since ( as has been discovered ) slip cannot be Such strapping devices are used for the strapping of sufficiently reliably prevented in this way during the ten 

packaged goods by way of a plastic strap . For this , a loop of sioning process . the particular plastic strap is placed about the packaged 45 Therefore , the problem which the present disclosure is 

goods . As a rule , the plastic strap is pulled off from a supply supposed to solve is to create a mobile strapping device of 

roll . After the loop has been placed completely about the the mentioned kind with high functional safety , in which the packaged goods , the end region of the strap overlaps with a intended strap tensions can be applied to the strap in a save 

segment of the loop of strap . The strapping device is now manner with as little slip as is possible . placed at this two - ply region of the strap , the strap being 50 

clamped in the strapping device , a strap tension is applied to SUMMARY 

the loop of strap by way of the tensioning apparatus , and a 

closure is produced between the two layers of strap by This problem is solved by the present disclosure in a 

frictional welding on the loop . In this process , pressure is strapping device of the mentioned kind in that during the 

applied to the strap with a frictional shoe oscillating in the 55 transmission of the motorized driving motion to the tension region of the two ends of the loop of strap . The pressure and ing wheel , preferably for as long as the tensioning wheel is 

the heat created by the motion melt the generally plastic engaging with the strap , by way of at least one transmitting 

strap locally within a short time . This produces a lasting device of the strapping device , a driving motion is trans 

connection between the two layers of strap , one which can mitted to the rocker , which can be pivoted at least sometime 

only be loosened with great force . After this , or roughly at 60 during the course of the tensioning process , wherein the 

the same time , the loop is separated from the supply roll . The driving motion is intended to apply a torque to the rocker . particular packaged goods have now been strapped . According to the present disclosure , the torque applied to the 

Such strapping devices are intended for mobile use , rocker can be used to increase the pressing force of the during which the device is taken by the user to the particular tensioning apparatus against the strap . In one simple - design place of use , where one should not be dependent on the use 65 solution , the torque exerted on the rocker by transmitting of energy supplied from the outside . The energy required for device can come from a motor , whose driving moment 

the intended use of such strapping devices in order to tension increases the pressing force of the rocker against the strap in 

a 

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a 

US 11,267,596 B2 

3 4 

the course of the tensioning process . It is preferable for the on the strap when the strap tension is already high and thus motorized increasing of torque to occur especially during or the danger of slippage between the tensioning wheel and the 

after an increasing of the strap tension strap is likewise especially high if it is attempted to further 

Advantageously , a motor is used for the generating of the increase the strap tension . Thanks to the likewise increasing motorized torque for the rocker that also performs other 5 pressing force in automated manner , i.e. , without manual driving motions . Especially favorably , one utilizes the motor intervention , one can counteract the increasing danger of 

and its driving motion with which the tensioning wheel is slippage and thus ensure the functional safety as well as a 

also driven . On the one hand , this can make an additional rapid strapping process even with high strap tension . Since 

motor unnecessary , while still performing the function the reaction of the strap to the action , namely , the strap according to the present disclosure . On the other hand , the 10 tension introduced , as well as transmitting devices are used 

motor torque which usually also increases with increasing for this , which are derived from the tensioning apparatus , strap tension can be utilized to increase the pressing force . especially the tensioning wheel , and transmitted to the 

This enables an especially simple design for variable press- rocker , no intervention by the user is needed to achieve the ing of the rocker against the strap , independent of the action of the present disclosure , which is advantageously tension . The latter can be done proportionately to the par- 15 accomplished automatically in the strapping device . ticular existing strap tension . In one embodiment of the present disclosure , the trans 

According to another aspect of the present disclosure , mitting device , which advantageously constitute an opera which is also of independent significance , a torque can also tive connection between the tensioning wheel and the 

be applied to the rocker and transmitted that is based on a rocker , comprise a pivoting mounting of the rocker at least 

force exerted on the tensioning apparatus by the strap at a 20 during the tensioning process and a rotary or rotationally point of engagement of the strap with the tensioning appa- mounted gearing element , which stands in an operative ratus . This force , which is a reaction of the tensioning force connection with the tensioning wheel during the tensioning applied by the driven tensioning wheel to the strap , can be process . The force of reaction of the strap is utilized as a 

tapped from a suitable place and be transmitted to the rocker torque and transferred to the rotary or rotational gearing by transmitting device . For the least possible structural 25 element ,such as a planet carrier of a planetary gearing . The 

expense , the strap tension force at the tensioning wheel itself rotary or rotational gearing element should be propped which is acting on the tensioning wheel can also be utilized . against a support element to resist the turning or rotating In particular , this can be used as torque acting on the movement . The force of reaction of the tensioning wheel can tensioning wheel at any given time , which is taken from the then be transferred to the rocker through or by virtue of the tensioning wheel to the transmitting device of the tensioning 30 support , so that an additional torque will act on the rocker , apparatus and transmitted by them to the rocker . which can be utilized to increase the pressing force of the Thus , according to the present disclosure , it is provided in rocker against the strap . The transmitting device can advan 

advantageous fashion that the motorized driving movement tageously be part of or the entire tensioning gearing by for the tensioning apparatus is also used at least indirectly as which a motorized driving movement or one coming from 

a reaction , making use of the rotational movement driven by 35 another energy supply source is directed with suitable rota 

the motor of the tensioning wheel as well as a pivoting tional speed toward the tensioning wheel . capability of the rocker during the tensioning process , to In an embodiment of the present disclosure , which also 

transfer a torque tapped by the tensioning wheel in engage- has independent significance , motorized driving movements 

ment with the strap by way of the transmitting device to the can be utilized with identical directions of rotation of the 

rocker in order to increase a pressing force of the tensioning 40 only one motor not only to drive the tensioning wheel during apparatus against the strap . the tensioning of the strap but also for a lifting of the rocker . In one embodiment of the present disclosure , a gearing of In addition to this , the same driving movement can also be the tensioning apparatus by which a motorized driving used for the variable pressing of the tensioning wheel 

movement for the tensioning wheel can be stepped up or against the strap being tensioned , independence on the strap down , can be part of or the entire transmitting device with 45 tension . The dependency is organized in this case such that , which the force acting on the tensioning wheel and resulting with increasing strap tension , the pressing force exerted by from the strap tension is transmitted from the strap to the the tensioning wheel on the strap also increases . Since with 

rocker . increasing strap tension the danger also increases of a According to another aspect , the present disclosure can slippage occurring between the tensioning wheel and the also be seen in that devices are provided for the variable 50 strap , one can counteract the danger of slippage by providing pressing of the tensioning wheel or the tensioning plate an increasing pressing force . In this embodiment the same 

against the strap , depending on the strap tension . Thus , the direction of turning of the motor as for the tensioning is 

present disclosure calls for a variable pressing of the ten- used . The motorized driving movement during the tension sioning apparatus against the strap , depending on the strap ing of the strap can be utilized such that , during the 

tension . 55 tensioning process of the strap by way of the tensioning In especially advantageous embodiments of the present wheel engaging with the strap and rotating against a strap disclosure , the strap tension created by the tensioning pro- tension , a counterforce acting from the strap to the tension 

cess is thus used advantageously to increase as well the ing wheel is utilized to increase the pressing force of the pressing force of the tensioning wheel and / or the tensioning tensioning wheel in the direction of the tensioning plate . plate on the strap as the strap tension increases steadily , 60 According to another aspect of the present disclosure , it thereby working against the constantly increasing danger , as should be made possible with little design expense and easy 

the strap tension likewise increases , of a “ slip - through ” or operating capacity to maintain and release a force resulting slippage of the tensioning wheel during the tensioning from the strap tension and operating reactively on a gearing 

process . Thus , as the strap tension increases , so too does the in order to transfer a driving movement to the tensioning pressing force of the tensioning wheel against the strap and 65 wheel . The present disclosure thus concerns a locking device 

the tensioning plate . The present disclosure in such embodi- for use in a strapping device , with which a rotatable wheel 

ments thus makes it possible to exert a high pressing force can be clamped , which is provided for transmission of a 

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driving movement ,especially a gearing wheel of a tension- FIG . 5 an exploded representation of another sample ing apparatus of the strapping device . The locking device embodiment of the tensioning apparatus of the strapping according to the present disclosure should have at least one device from FIG . 1 together with the motor ; clamping body which can pivot about an axis and is arranged FIG . 6 a perspective representation of the tensioning and 

at a distance from the wheel , which can be pivoted from a 5 closure mechanism of the strapping device from FIG . 1 ; 

release position into a locking position in which it bears by FIG . 7 another perspective representation of the tension 

a portion of an arc - shaped contact surface against an essen- ing and closure mechanism of the strapping device from 

tially planar peripheral clamping surface of the wheel , i.e. , FIG . 1 ; 

one which is free of form - fitting elements , wherein the FIG . 8 a side view of the tensioning apparatus from FIG . clamping body has a pivot radius which is greater than a 10 5 , in which a rocker is located in a first pivot end position ; 

distance from the pivot axis of the clamping body to the FIG . 9 a side view of the tensioning apparatus of FIG . 5 , peripheral clamping surface of the wheel , and the rotating of in which the rocker is located in a second pivot end position ; 

the clamping body about the pivot axis during the movement FIG . 10 a side view of the tensioning atus of FIG . 2 , from the release position to a clamping position occurs in the in which the rocker is located in a position with large opposite direction of turning to that of the wheel being 15 pressing force against a tensioning plate ; 

clamped . FIG . 11 a side view of the tensioning apparatus of FIG . 2 , With such a locking device , one can accomplish very in which the rocker is located in a position with less pressing functionally secure locking of rotating gear wheels in a force against a tensioning plate as compared to FIG . 10 ; simple designed manner . The locking in the direction of FIG . 12 a partial perspective representation of the ten 

turning of the wheel can be maintained with little force 20 sioning and closure mechanism ; expenditure . The clamping force of the clamping body even FIG . 13 a sectional representation of the tensioning and 

increases automatically if one should try to turn the wheel closure mechanism ; 

further by increasing the torque . FIG . 14 a schematic diagram of the geometrical relations 

The locking mechanism according to the present disclo- of a strapping device . sure can be used with advantage especially for the releasable 25 locking of a wheel of a gearing which belongs to a gearing DETAILED DESCRIPTION 

by which a driving movement is supposed to be transmitted 

to a tensioning wheel of the tensioning apparatus of a The strapping device 1 shown in FIGS . 1 and 2 , being strapping device . In this context , it can be provided espe exclusively manually operated , has a housing 2 , which 

cially for the clamping of a wheel of a planetary gearing by 30 encloses the mechanism of the strapping device and on 

which the driving movement is to be transmitted to the which a handle 3 is fashioned for handling the device . The tensioning wheel . With or at least assisted by a clamping of strapping device , moreover , is provided with a base plate 4 , the wheel being clamped , one can define one of at least two whose bottom side is provided for being placed on an object takeoff directions of the gearing , in particular a takeoff being packaged . All the functional units of the strapping direction of the gearing toward the tensioning wheel , so that 35 device 1 are fastened to the base plate 4 and to the carrier 

the strap can be tensioned . connected to the base plate , not otherwise depicted . Moreover , it can be advantageous with a loosening of the With the strapping device 1 , one can tension a loop of clamping to also remove at least partly , or entirely , the strap plastic strap B , not otherwise shown in FIG . 1 , for example , tension acting on the tensioning wheel and the gearing . one made of polypropylene ( PP ) or polyester ( PET ) , which Since with such locking mechanisms relatively low release 40 has previously been placed around the object being pack forces are needed to remove the clamping , even for high aged , by way of a tensioning apparatus 6 of the strapping strap tension values , the present disclosure produces espe- device . For this , the tensioning apparatus has a tensioning cially functionally safe and easy to operate strapping wheel 7 , with which the strap B can be grasped for a 

devices . The low operating and activating forces make it tensioning process . The tensioning wheel 7 is arranged on a possible to do without a rocker handle , with which large 45 pivoting rocker 8 , which can swivel about a rocker pivot axis 

torques have been produced heretofore in known strapping 8a . The tensioning wheel 7 , arranged with its axis of rotation 

devices for lifting the rocker from the taut strap . Instead of at a distance from the rocker pivot axis 8a , can be moved by 

a long rocker handle , one can now use a button or switch a pivoting motion of the rocker 8 about the rocker pivot axis 

with which the tension releasing process occurs . 8a from one end position with a distance from a curved 

Other embodiments of the present disclosure will emerge 50 tensioning plate 9 arranged on the base plate 4 to a second 

from the claims , the specification , and the drawing . end position in which the tensioning wheel 7 is pressed against the tensioning plate 9. By a corresponding motor 

BRIEF DESCRIPTION OF THE DRAWINGS driven movement in the reverse direction of rotation about 

the rocker pivot axis 8a , the tensioning wheel 7 can be 

The present disclosure shall be explained more closely 55 removed from the tensioning plate 9 and swiveled back to its with the help of sample embodiments represented schemati- starting position , such that the strap located between the 

cally in the figures . There are shown : tensioning wheel 7 and the tensioning plate 9 is released for 

FIG . 1 a strapping device according to the present dis- removal . closure in a perspective representation ; During use of the indicated embodiment of tensioning FIG . 2 an exploded representation of the tensioning 60 device , two layers of the strap are situated between the 

apparatus of the strapping device from FIG . 1 with the tensioning wheel 7 and the tensioning plate and are pressed 

motor ; by the tensioning wheel 7 against the tensioning plate . By FIG . 3 a perspective representation of the tensioning and rotation of the tensioning wheel 7 , it is then possible to 

closure mechanism of the strapping device from FIG . 1 ; provide a sufficiently large strap tension to the strap loop for 

FIG . 4 another perspective representation of the tension- 65 packaging purposes . The tensioning process and the ten 

ing and closure mechanism of the strapping device from sioning device and rocker 8 advantageously designed for 

FIG . 1 ; this shall be explained more closely below . 

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After this , a welding of the two layers can be done in transmission of the motorized driving movement .Such 

familiar fashion at a location of the strap where the two freewheeling in connection with a strapping device is 

layers of the strap loop are superimposed on each other , by already known , and so it shall not be further discussed here . way of the friction welding device 12 of the strapping As is likewise shown in FIG . 4 , the motorized transmis 

device . In this way , the strap loop can be permanently 5sion of the driving movement to the friction welding device 

closed . In the sample embodiment shown here , the friction 12 and transmission mechanism 14 occurs by any suitable welding and separating mechanism 12 is actuated by the manner . This might be , for example , a toothed belt drive 

same only one motor M of the strapping device with which with a toothed belt closed into a ring . One of the two gears all other motor - driven movements are also performed . For 

this , in familiar manner , there is provided a not otherwise 10 other one belongs to a gearing of the friction welding device is arranged on the drive shaft of the electric motor M , the 

depicted freewheeling in the direction of transmission from 12 , by which the motorized driving movement moves both the motor M to the places where the motorized driving 

movement occurs , which has the effect that the driving the transmission mechanism 14 and the welding shoe 13 of 

movement is transmitted in the particular desired rotary the friction welding device 12. In this way , the welding shoe 

driving direction to the corresponding functional unit of the is pressed against two overlapping layers of the strap can be 

strapping device and no transmission occurs in the other placed in an oscillatory movement with predetermined fre 

particular rotary driving direction of the motor . quency and amplitude , by which the two strap layers are 

The friction welding device 12 for this is provided with a locally melted in the region of the welding shoe and welded 

welding shoe 13 , shown only highly schematized , which is together by the subsequent cool down . moved by way of a transmission mechanism 14 from a 20 On the drive shaft of the motor , situated behind the 

position of rest at a distance from the strap to a welding toothed belt drive for the welding mechanism as seen from 

position in which the welding shoe is pressed against the the motor M , there is a bevel gear 19 , which belongs to a 

strap . The welding shoe pressed by mechanical pressure bevel gearing of the tensioning apparatus , as does a second 

against the strap in this way and the simultaneously occur- bevel gear 20 meshing with it . On the same shaft where the ring oscillating movement of the welding shoe with a 25 second bevel gear 20 is arranged there is also located a first 

predetermined frequency melts the two layers of the strap . gear 21 of another toothed belt drive 22 , which is further 

The locally plasticized or melted regions of the strap B flow more led across a second gear 23. The first gear 21 of the 

into one another and after a cooldown of the strap B there is toothed belt drive 22 is arranged on the shaft 24 firmly produced a connection between the two strap layers . Insofar against rotation . as is necessary , the strap loop can then be separated from the 30 On the other end of the shaft 24 is mounted the rocker 8 

supply roll of strap by way of a cutting device of the of the strapping device , being part of the tensioning appa strapping devices 1 , not otherwise depicted . ratus 6 and also carrying an upstream gearing from the 

The in feed of the tensioning wheel 7 in the direction of tensioning wheel in the present case a planetary gearing the tensioning plate 9 , the rotary driving of the tensioning 26 , for which suitable bearing sites can be provided on the 

wheel 7 about the tensioning axis 6a , the lifting of the 35 rocker 8. The rocker 8 is shoved onto the shaft 24 such that tensioning wheel from the tensioning plate , the infeed of the the rocker 8 is arranged and supported so that the rocker 8 

friction welding device 12 by way of the transmission can pivot about the longitudinal axis of the shaft 8. The 

mechanism 14 of the friction welding device 12 as well as longitudinal axis of the shaft 24 is thus at the same time the 

the use of the friction welding device 12 in itself and the rocker pivot axis 8a , about which the rocker 8 can swivel . activating of the cutting device occur by use of only a single 40 The planetary gearing 26 can be configured as a single or 

common electric motor M , which provides each time a multiple - stage planetary gearing , in particular , a two or driving movement for these components of the strapping three - stage planetary gearing . From an end face of the gear device . For the power supply of the motor M , a replaceable 23 facing the tensioning wheel 7 , there sticks out an exter 

storage battery 15 is arranged on the strapping device , nally toothed input sun gear 30 belonging to the planetary especially one which can be removed for recharging , which 45 gearing 26 , whose axis of rotation is identical to the axis of 

serves to store up electrical energy . A supply of other rotation 6a of the input gear 23. On a shaft of the gear 23 on 

external auxiliary energy such as pressurized air or other which the sun gear 30 is also configured in the sample electricity can be provided , but does not occur in the case of embodiment , a freewheeling 45 is provided , which only the strapping device per FIGS . 1 and 2 . enables one rotary direction of the sun gears 30 , namely , the 

As shown in FIG . 4 , the strapping device according to the 50 rotary direction which is provided for the driving of the 

present disclosure provides for a tapping of the driving tensioning wheel . The sun gear 30 is led through a ring gear 

movement of the motor M at two places of its drive axis , 27 and through a central recess of a planet carrier 25 , which 

either for the tensioning apparatus 6 or for the friction are likewise part of the planetary gearing 26. Looking from 

welding device 12. For this , the motor M can be operated in the input side of the planet gear , the planet carrier 25 is 

either of the two rotary directions . The shifting of the 55 arranged behind the ring gear 27 on the axle of the planetary transmission of the driving movement to the tensioning gearing 26 corresponding to the tensioning axis 6a . The 

apparatus 6 or to the friction welding device 12 is done planet carrier could also be configured as a clamping , automatically by a freewheeling arranged on the drive shaft coupling or spur gear . of the motor M ( and not otherwise shown ) independence on The ring gear 27 has at its outer circumference a cam 27c , the rotary direction of the drive shaft of the motor . In one 60 which engages with an abutment 46 secured to the base plate rotary direction of the drive shaft , the driving movement is 4 of the strapping device . The internally toothed ring gear 27 transmitted to the tensioning apparatus 6. Thanks to the is supported in this way so that the cam 27c can execute freewheeling , the friction welding device 12 experiences no slight relative movements within its engagement with the 

driving movement in this case . In the other rotary direction , abutment 46 , for example , in a recess 46a of the abutment . the tensioning apparatus 6 has no driving movement and the 65 Furthermore , the ring gear 27 has a ring - shaped shoulder 

friction welding device 12 is driven . No manual shifting is 27a , on which a roller bearing 28 is arranged for the 

required in this embodiment for changing the direction of mounting of the planetary gearing 26 . 

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The planet carrier 25 , whose axis is aligned with the At the other end face of the planet carrier 35 , turned tensioning axis 6a , engages by its three planet gears 25b toward the tensioning wheel 7 , there is arranged rotationally with an internal toothing of the input ring gear 27 of the firm on the planet carrier 35 another sun gear 36 , which 

planetary gearing 26. The planet gears 25b of the planet meshes with planet gears 41 of another planet carrier 42. A 

carrier 25 furthermore engage with the sun gear 30 , from 5 further sun gear 43 directed toward the tensioning wheel 7 

which they can obtain a driving movement and transmit it , and connected rotationally firm to the planet carrier 42 is led appropriately stepped down , to the ring gear 27. Thus , given through a recess of the additional planet carrier 37 , config 

a rotationally fixed arrangement of the planet carrier 25 , a ured as a ring gear . The sun gear 43 stands in meshing rotational movement of the sun gear 30 can be converted engagement with planet gears 38 of the additional planet into a rotational movement of the ring gear 27. In the sample 10 carrier 37 , facing the tensioning wheel 7 The planet gears 38 

embodiment , a first clamp 29 of a locking mechanism is of the second planet carrier 37 mesh in turn with an internal configured as a pivoting cam , which can be brought into toothing of the tensioning wheel 7 and drive the latter in its 

contact with a clamping surface 25a on the outer circum- rotational movement about the tensioning axis 6a . This ference of the planet carrier 25 or pivoted away from the rotational movement of the tensioning wheel 7 , provided clamping surface 25a with a spacing . The cam is arranged so 15 with a fine toothing on its external circumferential surface , that , upon contact of the cam with the clamping surface 25a is utilized to grasp the strap B with the circumferential 

by a rotation of the input planet carrier 25 in the rotary surface and pull back the strap of the strap loop , thereby direction provided for the planet carrier 25 , the clamping increasing a strap tension in the strap loop . action is further intensified . By an infeeding of the cam onto The third planet carrier 37 has a shoulder 37a on its outer 

the clamping surface 25a by a corresponding shifting move- 20 surface , which can be brought into contact against a stop 

ment , the planet carrier 25 can be blocked against rotation . element 39 by a rotational movement . The stop element 39 

By another shifting movement , the cam 29 can be moved itself is fixed not to the rocker , but to the base plate 4 or some 

away from the clamping surface 25a , thereby releasing the other carrier , which does not participate in the pivoting planet carrier 25 for rotational movements . The shifting motion of the rocker 8. Thus , the stop element 39 is 

movement can trigger a pivoting motion of the clamp 29 25 stationary in regard to the shoulder 37a . about a shift axis 143 , which is produced by activating a In use when strapping packaged goods , the strapping 

button 44 . device 1 behaves as follows : after a loop of a customary The sun gear 30 is furthermore arranged in the region of plastic strap has been placed around the particular packaged the axis of rotation 31 of a ring gear 32 , whose nontoothed goods , this is placed inside the strapping device in the region external surface 32a is coordinated with a second clamp 33. 30 of the end of the strap where the strap loop is double - ply for 

The axis of rotation 31 is identical to or aligned with the a certain length , and the end of the strap is secured in the tensioning axis 6a . The clamp 33 interacting with the outer strapping device by a strap clamp , not otherwise depicted . A 

surface 32a can essentially be configured in the same way as section of the strap B immediately next to the strap loop is 

the first clamp 29 as a shifting cam , which can move placed in double layer on top of the tensioning plate 9 of the 

between two end positions , whereby in the one position the 35 tensioning apparatus 6. The rocker 8 with the tensioning ring gear 32 is blocked against rotation and in the other wheel 7 and the upstream gearing 26 is situated in its upper position the ring gear 32 is released for rotational move- end position , in which the tensioning wheel 7 is arranged at 

ments . Moreover , an internal toothing of the ring gear 32 a spacing ( by its greatest design spacing ) from the tension 

engages with three planet gears 34 , which are mounted at the ing plate 9 , so that the largest possible opening gap is 

end face of the following planet carrier 35 , facing the ring 40 produced , enabling an easy , comfortable and thus also rapid 

gear 32. The planet gears 34 of the planet carrier 35 placement of the strap in the tensioning apparatus . After this , furthermore engage with the sun gear 30 of the input gear 23 , the rocker is lowered onto a tensioning plate 9 opposite the which protrudes into the ring gear 32 . tensioning wheel 7 and pressed against the strap arranged The locking device in the embodiment being described is between the tensioning plate 9 and the tensioning wheel 7 . configured so that always only one of the gears 25 , 32 is 45 Both this transfer movement of the tensioning wheel and the clamped against rotation and the other gear 25 , 32 is free for magnitude of the pressing force exerted on the strap by the 

rotational movements . Thus , depending on the positions of tensioning wheel at the start of the tensioning process can be 

the locking devices 29 , 33 , it is possible for a rotational produced in the described embodiment of the present dis 

movement of the gear 23 and the sun gear 30 to result in closure by one or more prestressed spring elements 44 ( not 

either a rotation of the planet carrier 35 about the tensioning 50 shown ) . By activating a button 10 , the spring element can be 

axis 6a and axis of rotation 31 by virtue of a movement of released and the entire strapping process triggered with its 

the planet gears 34 in the internal toothing of the ring gear consecutive steps of " tensioning " , " closing " , " cutting " , 32. Or the rotation of the sun gear 30 depending on the releasing the tension of the strap in the region of the positions of the locking device results in a rotation of the tensioning apparatus , and “ lifting of the rocker ” , for which 

ring gear 32. If the planet carrier 25 is not clamped by the 55 no further intervention by the user of the strapping device 

locking mechanism , the rotating sun gear entrains the planet need occur . gears 25b so that the planet carrier 25 rotates and the ring After the tensioning wheel 7 is moved automatically from 

gear 27 remains stationary . On the other hand , if the ring the open position to its tensioning position ( see the tension 

gear 32 is not clamped , a rotation of the sun gear 30 results ing position in FIG . 10 and the open position in FIG . 11 ) , in an entrainment of the planet gears 34 , which in turn set the 60 where the tensioning wheel 7 lies on the strap B and presses ring gear 32 in a rotational movement . Since the resistance across the strap on the tensioning plate 9 , the motorized 

to rotation in the further course of the planetary gearing 26 driving movement is transmitted to the tensioning wheel 7 . is greater toward the tensioning wheel 7 than the torque Now the second clamp 33 is moved into its position in which needing to be overcome in order to set the ring gear 32 in the second clamp 33 presses against the ring gear 32. The 

rotation , the ring gear 32 will primarily rotate in this case 65 ring gear 32 is thereby arrested from rotational movements 

and the tensioning wheel 7 at least for the most part will not and locked . The first clamp 29 , on the other hand , continues 

rotate . to be positioned at a spacing from the input planet carrier 25 

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and releases the ring gear 27 for rotational movements . The The strap tension created in the strap B as a reaction to the motorized driving movement , which thanks to the particular tensioning process brings about a force on the tensioning designated rotary direction of the motor M is transmitted via wheel 7 which is opposite the rotary direction of the ten 

the bevel gearing 19 , 20 , 21 to the second toothed belt drive sioning wheel provided during the tensioning process . This 

22 and thus to the gear 23 , goes from here in the sequence 5 reaction force acts from the tensioning wheel via the planet of the following mentioned gearing elements via the input carrier 37 on the rocker 8 as a torque directed about the 

gear 23 , the sun gear 30 , the planet gears 34 , the sun gear 36 , rocker pivot axis 8a , by which the planet carrier 37 is 

the planet gears 41 , the sun gear 43 and via the planet gears pressed with increased force against the strap in the direction 

38 to the tensioning wheel 7. The tensioning wheel 7 can be of the tensioning plate 9. The higher the strap tension already driven by the multistage planetary gearing in greatly 10 produced in the strap , the higher the torque resulting from 

stepped - down rotational movement of the motor and thus this and from the motorized driving movement continuing to 

when necessary with correspondingly high torque in the act on the tensioning wheel 7. This torque , arising as a 

predetermined rotary direction . reaction , is in turn proportional to the resulting pressing In the just described “ tensioning ” operating state of the force acting from the tensioning wheel 7 on the strap B , with 

strapping device , the driven tensioning wheel 7 in engage- 15 which the strap B is pressed by the tensioning wheel 7 

ment with the strap produces a corresponding , oppositely against the tensioning plate 9. Therefore , in the present directed counterforce on the tensioning wheel 7 , depending disclosure , an increasing strap tension from the motorized 

on the resistance resulting from the strap tension and acting driving movement on the tensioning wheel 7 goes hand in 

on the tensioning wheel 7. This counterforce acts in the hand with an increasing pressing force of the tensioning 

reverse direction of transmission of the motorized driving 20 apparatus on the strap . movement on all gearing elements of the multistage plan- After the ending of the tensioning process and the fol 

etary gearing that are involved in the transmission of the lowing welding process to form the closure and also after a 

driving movement . If a different type of gearing from a motorized driven cutting process by a cutting device , not single or multiple - stage planetary gearing is used , the coun- otherwise depicted , integrated in the strapping device , a 

terforce resulting from the already applied strap tension and 25 quick and uncomplicated removal of the strap from the 

put into the respective gearing via the contact with the strapping device should be possible . To accomplish this , tensioning wheel is also available for use in accordance with there is provided a motorized lifting movement of the 

the present disclosure . According to the present disclosure , tensioning wheel 7 from the clamping position . For this , the 

this counterforce can be used to improve the conditions of button is activated and for as long as the button 10 is 

the process , especially the functional safety even when the 30 activated the rocker also remains in the open position , in 

applied strap tension is high . Thus , in order to use this which a sufficient spacing is created between the tensioning counterforce for the following described purpose , it would plate 9 and the tensioning wheel 7. By releasing the button 

be possible in theory to use each of these gear elements for 10 , the rocker is closed , for example , by spring force . this , in particular , to pick off and employ the mentioned In the sample embodiment , to accomplish this at first the 

counterforce at each of these gear elements . 35 operative connection between the electric motor M and the 

In the sample embodiment , the planet carrier 37 is used tensioning wheel 7 is released and an operative connection 

for this . The planet carrier 37 is buttressed in this case via the is created between the electric motor M and the rocker 8 . stop element 39 against the base plate 4 , so that the entire This is accomplished by switching the clamps 29 , 33. The tensioning apparatus 6 is pressed about the rocker axis 8a previously existing clamping of the ring gear 32 is lifted in 

against the strap in proportion to the force of resistance 40 that the second clamp 33 is removed from the outer surface 

( strap tension ) . The tensioning wheel 7 is thus pressed 32a of the ring gear 32 and in this way the ring gear 32 is 

against the strap B proportionally to the strap tension . The released for rotational movements . Basically at the same 

strap tension generated by the tensioning process is utilized time or shortly thereafter , the first clamp 29 is lowered onto in advantageous manner to increase the pressing force of the the clamping surface 25a of the planet carrier 25 and brought tensioning wheel 7 on the strap B as the strap tension 45 to bear against it in clamping fashion . In this way , the input increases steadily , so that the danger of a “ slip - through ” or planet carrier 25 is fixed and locked against a rotational 

a slippage of the tensioning wheel 7 during the tensioning movement about the tensioning axis 6a , along which the 

process , which also increases with increasing strap tension , entire planetary gearing is situated . can be counteracted . In this way , the tensioning wheel 7 can turn freely without 

For this , the planet carrier is configured with the engaging 50 being driven and no longer has an operative connection to 

element 37a , which interacts with the stationary stop ele- the electric motor M or the sun gear 30 , such as might ment 39. The engaging element ,configured as a cam and transmit a driving movement . A driving movement of the 

arranged on the outer circumference of the planet carrier and electric motor M with the same rotary direction as during the projecting essentially radially from it , is buttressed against tensioning process is now utilized , thanks to the locking of 

the stop element 39. As can be seen from FIG . 3 , for this 55 the input planet carrier 25 of the planetary gearing , so that 

purpose the stationary stop element 39 is located in the the planet gears 25b of the spur gear 25 entrain the input ring region of the head end of the strapping devices . The stop gear 27 in their rotational movement . The input ring gear 27 

element 39 in the sample embodiment shown is situated on thus executes a rotational movement by virtue of the rotating 

one side , namely , the head end , of the tensioning axis ba and planet gears 256. The bearing and abutment of the ring gear the rocker pivot axis 8a running essentially parallel to it is 60 27 on the abutment element 46 leads to a pivoting motion of 

on the other side of the tensioning axis 6a . The rocker 8 , on the ring gear 27 about the rocker axis 8a . The input ring gear which the planet carrier 37 is arranged via a roller bearing 27 , which is also connected rotationally firm to the rocker 8 

and able to rotate about the tensioning axis 6a , is also able thanks to the clamping , entrains the rocker 8 during this 

to swivel at least during the tensioning process , i.e. , it is not movement . This results in a lifting of the rocker 8 and the blocked against pivoting motions but instead released for 65 tensioning apparatus 6 secured to it , including the tensioning these . Furthermore , the planet carrier 37 is able to rotate wheel 7. The rotational movement of the rocker 8 can be 

during the tensioning process about the tensioning axis 6a . limited by an end stop or an end position sensor , which shuts 

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off the motor M after reaching an end position in the opened operative connection with the motor M. Optionally , strap position of the rocker 8 and triggers an arresting of the tension still acting on the tensioning wheel 87 from the strap rocker . Thanks to the motorized lifting movement of the B from the previous tensioning process is released in this 

rocker 8 against the direction of action of the spring element way by the tensioning wheel 87 and the gearing 106 

44 , the spring element 44 also is once more provided with 5 upstream from the tensioning wheel . With the clamp 29 , the 

a greater prestressing force . The strap B can now be removed spur gear configured as a planet carrier 105 is locked , and its 

from the strapping device 1 . axis of rotation is aligned with the tensioning axis 86a , i.e. , The strapping device is now ready for a new strapping the axis of rotation of the tensioning wheel 87. The motor 

process , which can occur in the same way as the previously ized driving movement transmitted from the bevel gear 100 

described strapping process . In order to lower the rocker 8 10 to the input sun gear 110 , thanks to the removable rotary after introducing a new piece of strap B in the strapping arresting of the planet carrier 105 performed by way of the 

device 1 , the spring element 44 must be released again , clamp 29 , does not lead to a rotation of the planet carriers 

which can be done for example via an operator button on the 105 but instead to rotational movements of the planet gears strapping device . In the sample embodiment , the previously 105b of the planet carrier 105. The internal toothing of the 

actuated button 10 is released for this . The spring force then 15 ring gear 109 which engages with these planet gears 105b swivels the rocker , now in the opposite direction , against the places the latter in rotational movement . As is especially tensioning plate and clamps the strap for the next tensioning seen in FIG . 7 , an external toothing 109c of the ring gear 109 

process with an initial pressing force between the tensioning engages with an external toothing 150c of a circular arc 

wheel 7 and the tensioning plate 9. The variable pressing segment 150 , which is disposed stationary on one end of a 

force in the rest of the tensioning process increases in the 20 connection shaft 151. The connection axis 151a of the 

manner described . connection shaft 151 runs parallel to the stationary tension 

In FIGS . 5 to 9 is shown another sample embodiment of ing axis 86a of this sample embodiment . Instead of the two 

a strapping device according to the present disclosure . In external toothings 109c , 150c , the ring gear 109 could also 

regard to its external appearance , this can also correspond to be braced by a cam against an abutment element , in which 

the representation of FIG . 1. The basic layout of this 25 case either the cam or the abutment element is neither embodiment of the strapping device can also correspond to fastened to the ring gear 109 nor movable in design and the 

that of the previously discussed embodiment of the present other of the two elements should be disposed on the ring disclosure . Accordingly , in this embodiment as well , only a single motor M is used , which is provided to drive the The rotational movement of the ring gear 109 and the welding mechanism 12 and separating mechanism ( not 30 engagement of the ring gear 109 with the circular arc 

shown in FIG . 5 ) in one of the two directions of rotation of segment 150 results in a rotational movement of the con 

the motor on the one hand and the tensioning apparatus 6 on nection shaft 151 about the connection axis 151a . A spur the other hand in the other direction of rotation of the motor . gear 152 arranged at the other end of the connection shaft 

The optional driving of either the welding mechanism and 151 engages with an external toothing 117c of the planet separating mechanism on the one hand or the tensioning 35 carrier 117 and in this way transmits the rotational move 

apparatus 6 on the other hand is done via a freewheeling and ment about the connection axis 151a to the planet carrier 

different directions of rotation of the motor M. 117. In relation to the tensioning axis 86a , the connection 

The embodiment likewise shows a pivoting rocker 80 of axis 151a is situated on one side and the rocker pivot axis 

the tensioning apparatus 86 , driven by motor about a rocker 80a on the other side of the tensioning axis 86a , the rocker pivot axis 80a . In contrast with the previously explained 40 pivot axis 80a being located on the side of the head end of sample embodiment , here it is not the tensioning wheel 87 the strapping device . but instead the tensioning plate 89 which is arranged on the The planet carrier 117 belongs to the drive train provided pivoting rocker 80 , whose rocker pivot axis 80a runs parallel for the driving movement of the tensioning wheel 87. The 

to the tensioning axis 86a . The motorized driving movement operative connection of this drive train to the motor M is 

with the direction of rotation which is used for rotational 45 momentarily broken thanks to the above described shifting movements about the tensioning axis 86a is also used in this process of the locking mechanism . Thus , at the above 

sample embodiment for the pivoting motion of the rocker described moment in the process there is no operative 80. The rocker pivot axis 80a in this embodiment as well connection of the motor M with the tensioning wheel 87 to 

runs essentially parallel to the tensioning axis 86a , about drive the latter . As a result of the rotary movement trans 

which the tensioning wheel can rotate . The rotational move- 50 mitted to the planet carrier 117 , the planet carrier 117 rotates 

ment of the motor is transmitted , behind a point at which the about the tensioning axis 86a and entrains a dog 80c of the 

motorized driving movement is utilized for the welding rocker 80 by a cam 117a arranged on its outer circumfer 

mechanism , across a bevel gear pair 99 , 100 to a planetary ential surface . As a result , the rocker 80 , appearing as an arc 

gearing 106 and from this it goes further to the tensioning in plan view , is rotated and opened . wheel 87. A freewheeling 125 arranged on the shaft of an 55 The rocker 80 , able to turn about the rocker axis 80a and input sun gear 110 ensures that the input side of the planetary having the approximate shape of an arc segment , is arranged gearing 106 can only turn in one rotary direction . The with its lower free end underneath the tensioning wheel 87 , planetary gearing 106 is provided with gear elements which so that the tensioning plate 89 arranged in the region of the 

can be optionally arrested by way of a locking mechanism free end of the rocker 80 can likewise be arranged directly having two clamps 29 , 33 , as in the previously described 60 beneath the tensioning wheel 87. In order to arrange the sample embodiment , so that the driving movement can be tensioning plate 89 with a spacing from the tensioning wheel 

transmitted either to the tensioning wheel 87 or to the rocker 87 , the previously described motorized driven movement of 

80 . the rocker 80 is used in the rotary direction along arrow 112 

In order to open the tensioning apparatus 86 , the ring gear ( FIG . 6 ) , by which the rocker 80 is opened as described and 

107 is released via the locking device , i.e. , the clamp 33 is 65 a spacing between the tensioning wheel 87 and the tension 

not in clamping engagement with the ring gear 107. The ing plate 89 is increased . The opening movement can be 

tensioning wheel 87 can in this way turn freely without an limited by an end stop . The motor - opened rocker 80 now 

a 

a 

9 

a 

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> 

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enables a removal of the tensioned and closed packaging on the tensioning wheel 87. As long as an increasing of the 

strap from the strapping device . After the finished strapping strap tension is occurring by the tensioning process , so too 

is removed , the end of a new strapping loop for the next will the resistance force increase and thus the pressing force tensioning process can be introduced between the tensioning resulting from it . plate and the tensioning wheel . The rocker 80 can be brought 5 In FIGS . 8 and 9 are shown the end positions of the rocker 

back once again to the tensioning wheel by the restoring 80 which are possible on account of the swiveling ability of 

force of the spring element 124 previously stretched during the rocker to open and close on the one hand and to increased 

the opening movement and press the strap against the the pressing force on the strap on the other hand . As shown tensioning wheel with an initial pressing force for the in FIG . 8 , in one of the two end positions the tensioning plate tensioning process . In order to utilize the spring force and 10 89 by virtue of a contacting of the cam 117b of the planet thereby move the rocker 80 in a rotary direction along arrow carrier 117 with a contour of the dog 80b and a clockwise 

113 in the direction of the tensioning wheel 87 , an activation rotational direction of the planet carrier ( in relation to the of a button or some other activating element can be pro- representation shown in FIG . 8 ) rotates the rocker counter vided , by which the spring force is released to act on the clockwise about its rocker pivot axis . The dog 80b and the 

rocker . This can also involve a releasing of the button 10 . 15 cam 1176 in this case act like a lever , which produces a 

In order to tension the strap B arranged between the counterclockwise torque about the rocker pivot axis 80a . tensioning wheel 87 and the tensioning plate 89 , the ring FIG . 9 shows the end position of the opened rocker . Here , gear 107 is clamped on its outer circumferential surface by the planet carrier 117 turns in the opposite rotary direction 

way of the clamp 33 to prevent rotational movements . The as compared to FIG . 8 and thereby comes to bear against the 

planet carrier 105 is not clamped , and so it can turn , as can 20 dog 80c of the rocker 80. The dog 80c is situated in regard the connection shaft 8. The motorized driving movement to the rocker pivot axis 80a and the other dog 80b on the from the sun gear 30 in the planetary gearing 106 arranged other side of the rocker pivot axis 80a . In the position of use 

on the tensioning axis 86a is transmitted through the planet of the strapping device with a horizontal orientation of the 

carrier 105 and the ring gear 107 to the planet gears 114 of base plate , the dog 80b is situated above and the dog 80c 

the second planet carrier 115 and sets the latter in rotation . 25 below the rocker pivot axis 80a . In this way , the rocker 

A sun gear , not recognizable in the representation of FIG . 5 , swivels clockwise in the representation of FIG . 9 and 

drives the planet gears 121 of an additional downstream thereby creates a spacing from the tensioning wheel 87 . stage of the planetary gearing 106. The planet carrier 122 of FIG . 12 shows a partial perspective view of the tensioning this stage also rotates . The sun gear 123 of the last - men- apparatus of the second sample embodiment , in which only tioned stage is further led through the additional planet 30 one of the two clamps is depicted . Here , the clamp 33 is 

carrier 117 and drives the planet gears 118 of this additional brought to bear against the flat circumferential surface 107b 

stage , which in turn are in engagement with an internal of the ring gear 107 , which is essentially round in cross toothing of the tensioning wheel 87. The tensioning wheel section . FIG . 13 shows a sectional representation through 87 is thus driven in the tensioning direction across the single the ring gear 107 and the clamp 33. By way of the clamp 33 

or multiple - stage planetary gearing 106 and the inserted 35 of the locking mechanism , the ring gear can be optionally strap B is tensioned . clamped against rotational movements or released again . In the previously described operating mode of “ tension- Each of the clampings provided in the strapping devices of ing ” , in which the tensioning wheel 87 engages with the FIG . 2-11 can be configured according to the locking mecha 

strap B , a force of resistance in the form of a restoring nism described here , however traditional locking mecha 

moment acting from the strap B on the rotating tensioning 40 nisms are also possible . In the clamping according to the 

wheel 87 is produced by virtue of the strap tension . Its present disclosure , an at least approximately planar circular 

magnitude is variable and proportional to the magnitude of or circular arc - shaped circumferential surface of the gear the applied strap tension . This force of resistance works interacts with a pivoting clamping element or clamping opposite the motorized driving moment which arises in the body . The circumferential surface 107b of the sample 

gear elements participating in the transmission of the driving 45 embodiment shown , functioning as a clamping surface , has 

movement .In the sample embodiment ,the planet carrier 117 no detent elements with which a clamping is provided that 

is braced by a cam 117b , having the function of an end stop , is based on a form - fitting engagement of a clamping element 

against the rocker 80. The planet carrier 117 rotating by the with a detent element or a detent recess . motorized driving movement in a suitable rotary direction The clamping element 33 is mounted so that it can pivot lies by its cam 117b against a dog 80b of the rocker and 50 about the shifting and pivoting axis 143 , where the shifting thereby turns it in a motion according to arrow 113 ( FIG . 6 ) axis 143 of the clamping element 33 runs parallel to the axis 

about the rocker axis 80a against the tensioning wheel . of rotation of the gear 107 being clamped . The shifting axis 

Optionally , a noticeable rotary movement about the rocker 143 runs in the region of one end of the camlike clamping axis 80a will not actually be executed here , but essentially element 33. In the region of the other end of the clamping only the torque about the rocker axis 80a is increased . In 55 element there is provided an arc - shaped contact surface 33a , either case , however , the pressing force by which the rocker which is provided for a contact with the clamping surface 

80 presses the tensioning plate 89 or the strap against the 107b of the gear being clamped . Due to the circular shape of 

tensioning wheel 87 is increased . This increase generally the clamping surface 109b as well as the arc shape of the 

does not occur in a single step . The increasing of the contact surface 33a inside view , an essentially linear contact 

pressing force of the rocker against the strap , ultimately 60 comes into being when the clamping element 33 contacts the stemming from the motorized driving movement and the circumferential surface 107b , and this line of contact runs already existing strap tension and occurring by engaging perpendicular to the plane of the drawing in FIG . 13 . with the tensioning gearing 106 , occurs proportionally to the As emerges from FIG . 13 , the clamping element 33 is resistance and restoring force present in the strap and acting arranged in relation to the gear 107 being clamped such that 

as a resistance force against a maintaining and a further 65 the line of contact of the contact surface 33a has a distance increasing of the strap tension at the point of engagement 155 from its pivot axis 143 which is greater than the distance 

with the strap , from the strap to the tensioning plate 89 and of the pivot axis 143 from the clamping surface 107b . As a 

a 

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19 bevel gear 

21 gear 

23 gear 

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result , during a pivoting motion of the clamping element 33 3 handle from its release position to a clamping position it already 4 base plate 

comes into contact with the clamping surface 107b at a point 6 tensioning apparatus which lies before a line of connection 156 of the axis of 6a tensioning axis rotation of the gear 107 to the pivot axis 143 of the clamping 5 7 tensioning wheel 

element . In relation to the intended rotary direction 157 of 8 rocker the gear 107 being clamped , the line of contact occurs before 8a rocker pivot axis the ( imaginary ) line of connection 156. The rotation of the 9 tensioning plate gear 107 is braked and can at most still move just a little 10 button Thanks to a further rotation against the increasing clamping 10 12 friction welding mechanism action , the clamping action is further intensified and an 13 welding shoe increasing wedging of the clamping element 33 against the 14 transmitting mechanism gear 107 is intensified . Thanks to these geometrical rela tions , the clamp 33 cannot pass the line of connection 156 15 storage battery 

in rotary direction of the gear , its pivoting motion halts before the line of connection 156 and presses against the 15 20 bevel gear clamping surface 107b . In an end position essentially cor responding already to the position of first contact with the 22 toothed belt drive 

clamping element 33 , the gear 107 is clamped against the 

camlike clamping element 33. No further movement is 24 shaft 

possible , regardless of how high the torque is . 20 25 planet carrier 

FIG . 14 shows the geometrical relations of the clamping . 25a clamping surface 

Here as well , the connection between the axis of rotation 86a 25b planet gears of the gear 107 and the pivot axis 143 is designated as 156 . 26 gearing 

The contact surface ( circumference ) of the gear could be 27 ring gear 

smooth or structured . The radius of the gear at the contact 25 27a shoulder 

site with the cam is designated as 158 and the pivot radius 27c cam 

of the clamping element 33 at the contact site is 155. The 28 roller bearing 

pivot radius 155 at the contact site subtends an angle a with 29 first clamp 

the line of connection 156 , and the radius 158 of the gear 107 29a arc - shaped contact surface 

an angle y with the swivel radius 155 ( each time at the 30 30 sun gear contact site ) . In the sample embodiment , the geometrical 31 axis of rotation of gearing and tensioning wheel 

relations are such that in the clamping position , in which the 32 ring gear 

gear 107 is blocked against rotational movements in the 32a outer surface 

intended rotary direction , the angle y is at least approxi 33 second clamp mately 1550. In experiments it was also possible to achieve 35 34 planet gear good results when using an angle from the range of 130 ° to 35 planet carrier 

170 ° , especially from 148 ° to 163o . The angle a should advantageously be greater than or equal to 7o . In the sample 37 planet carrier 

embodiment , it is 9o . In other embodiments , it can also be 37a shoulder 

chosen from a range of 7 ° to 40 ° . 40 38 planet gear 

In the sample embodiment of the present disclosure 39 stop element 

discussed here , it is not absolutely necessary , if the wedge 40 arrow 

effect is strong enough , to maintain the position of the cam 41 planet gear in its clamping position by outside measures . This already 42 planet carrier 

occurs simply due to the fact that the gear 107 can only turn 45 43 sun gear in one rotary direction and this is in fact blocked in remov- 44 spring element ( restoring spring ) able fashion by the clamp 33. In sample embodiments of the 45 freewheeling present disclosure , the camlike clamping element is held in 46 abutment 

position by the spring force of a spring element 159. For this , 46a recess 

the spring element 159 lies against the clamping element 50 80 pivoting rocker 

above the shifting axis 143 and turns or holds the clamping 80a rocker pivot axis 

element 29 in its clamping position . In order to remove the 80b dog clamping element from its clamping position , the spring 80c dog force must be overcome with a switch 160. Using the switch 86 tensioning apparatus 160 , both clamps 29 and 33 can be activated at the same 55 86a tensioning axis time . Depending on the arrangement of the switch / button , a 87 tensioning wheel 

pulling or pressing of the switch can overcome the spring 89 tensioning plate force and release the ring gear 107 from the clamp 33 and 99 bevel gear 

lock the planet carrier 105. In the other movement of the 100 bevel gear switch / button , the clamp 29 and the planet carrier 105 are 60 105 spur gear ( planet carrier ) again released via the spring force , while the clamp 33 locks 105b planet gear the ring gear 107 . 106 gearing 107 ring gear 

LIST OF REFERENCE SYMBOLS 107b circumferential surface 

65 109 ring gear 1 strapping device 109b circumferential surface 

2 housing 109c external toothing 

36 sun gear 

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10 

15 2 

a 

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110 sun gear 7. The strapping device of claim 6 , further comprising first 

112 arrow gearing operably connecting the drive shaft to the rocker and 

113 arrow second gearing operably connecting the drive shaft to the 

114 planet gears friction - welding device . 115 planet carrier 8. The strapping device of claim 6 , wherein the drive shaft 

117 planet carrier is operably connected to the tensioning wheel to rotate the 117b toothing tensioning wheel about a tensioning axis and is operably 

117a cam connected to the weld shoe to oscillate the weld shoe . 117b cam 9. The strapping device of claim 1 , further comprising 117c toothing gearing operably connecting the drive shaft to the rocker , 118 planet gear wherein the drive shaft is operably connected to the ten 121 planet gear sioning wheel via the gearing to rotate the tensioning wheel 

122 planet carrier about a tensioning axis . 123 sun gear 10. The strapping device of claim 9 , further comprising 124 spring element one or more clamping elements movable from a first con 

125 freewheeling figuration to a second configuration to switch the gearing 143 shifting axis from a first state in which the gearing operably connects the 

150 circular arc segment drive shaft to the tensioning wheel so rotation of the drive 150c toothing 20 shaft in the first rotational direction causes the tensioning 151 connection shaft wheel to rotate about the tensioning axis to a second state in 

151a connection axis which the gearing operably connects the drive shaft to the 

155 distance / swivel radius rocker so rotation of the drive shaft in the first rotational 

156 connection line direction causes the rocker to pivot about the rocker axis . 157 rotary direction 11. The strapping device of claim 10 , wherein the gearing 

158 radius comprises a first gear component and a second gear com 

159 spring element ponent , wherein when the gearing is in the first state the first 

160 switch gear component is rotatable and at least one of the one or 

B strap more clamping elements prevents the second gear compo 

M motor 30 nent from rotating , and wherein when the gearing is in the 

second state at least one of the one or more clamping elements prevents the first gear component from rotating and The invention is claimed as follows : the second gear component is rotatable . 1. A strapping device comprising : 12. The strapping device of claim 11 , wherein the rocker a base comprising a tensioning plate ; 35 is pivotable relative to the base and about the rocker pivot a rocker comprising a tensioning wheel rotatable about a axis between a first position in which the tensioning wheel tensioning - wheel axis , wherein the rocker is pivotable is a first distance from the tensioning plate and a second relative to the base about a rocker pivot axis ; position in which the tensioning wheel is a second distance 

a friction - welding device movable between a release from the tensioning plate , wherein the first distance is less position and a welding position ; and 40 than the second distance , wherein when the gearing is in the 

a motor comprising a drive shaft operably connected to second state , rotation of the drive shaft in the first rotational 

the rocker and the friction - welding device such that : direction pivots the rocker from the first position to the 

rotation of the drive shaft in a first rotational direction second position . pivots the rocker relative to the base and about the 13. The strapping device of claim 11 , wherein the one or 

rocker pivot axis to change a distance between the 45 more clamping elements comprise a first clamping element 

tensioning wheel and the tensioning plate ; and and a second clamping element ,wherein the first clamping rotation of the drive shaft in a second rotational direc- element is movable from a disengaged position in which the 

tion opposite the first rotational direction moves the first clamping element does not prevent the first gear com friction - welding device from the release position to ponent from rotating to an engaged position in which the the welding position . 50 first clamping element prevents the first gear component 2. The strapping device of claim 1 , wherein the rocker is from rotating , wherein the second clamping element is 

pivotable relative to the base and about the rocker pivot axis movable from a disengaged position in which the second 

between a first position in which the tensioning wheel is a clamping element does not prevent the second gear compo first distance from the tensioning plate and a second position nent from rotating to an engaged position in which the in which the tensioning wheel is a second distance from the 55 second clamping element prevents the second gear compo tensioning plate , wherein the first distance is less than the nent from rotating . second distance . 14. The strapping device of claim 13 , wherein the first 

3. The strapping device of claim 2 , wherein the drive shaft gear component operably connects the drive shaft to the 

is operably connected to the rocker such that rotation of the tensioning wheel , and wherein the second gear component drive shaft in the first rotational direction pivots the rocker 60 operatively connects the drive shaft to the rocker . from the first position to the second position . 15. The strapping device of claim 14 , further comprising 4. The strapping device of claim 3 , further comprising a an actuating device actuatable to cause one of the first and biasing element biasing the rocker to the first position . second clamping elements to move from its disengaged 5. The strapping device of claim 4 , wherein the biasing position to its engaged position and the other of the first and element comprises a spring . 65 second clamping elements to move from its engaged posi 6. The strapping device of claim 5 , wherein the friction- tion to its disengaged position to switch the gearing from the 

welding device comprises a weld shoe . first state to the second state . 

a a 

a 

2 

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10 

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21 

16. The strapping device of claim 15 , wherein the actu 

ating device is actuatable to simultaneously cause the one of 

the first and second clamping elements to move from its disengaged position to its engaged position and the other of 

the first and second clamping elements to move from its 5 engaged position to its disengaged position to switch the 

gearing from the first state to the second state . 17. The strapping device of claim 16 , wherein the actu 

ating device is actuatable to cause initiation of at least one of a tensioning process and a strap - connecting process . 18. The strapping device of claim 1 , wherein the rocker is 

pivotably mounted to the base . 19. The strapping device of claim 18 , wherein the rocker 

is pivotably mounted to the base so a torque is applied to the 

rocker during a tensioning process causes one of the ten- 15 sioning wheel and the tensioning plate to exert a force on the other of the tensioning wheel and the tensioning plate . 20. The strapping device of claim 1 , further comprising gearing operably connecting the drive shaft to the rocker and 

the friction - welding device , the gearing comprising free- 20 wheeling that transmits a drive movement of the motor to the 

rocker and not to the friction - welding device when the drive 

shaft rotates in the first rotational direction and that transmits 

the drive movement of the motor to the friction - welding device and not to the rocker when the drive shaft rotates in 25 

the second rotational direction . 

a 

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