Patent Publication Number: US-2023143931-A1

Title: Rotational and translational packing device and packing method thereof

Description:
TECHNICAL FIELD 
     The present invention relates to the technical field of a strapping machines, in particular to a rotary translational strapping apparatus and strapping method thereof. 
     BACKGROUND ART 
     At present, with the continuous development of the logistics industry, goods are often required to be strapped with a strapping tape prior to shipment. With the popularization of automated strapping techniques, strapping machines with automated strapping capabilities are widely used. For example, Chinese Patent No. 200880103087.8 discloses a strapping machine, which mainly uses a strapping tape for strapping goods. Among them, the strapping machine is usually configured with components such as a strapping head, a strapping chute, and a strapping material dispenser, wherein the strapping head has an ability to guide strapping material (such as a strapping tape) into and out of the strapping chute and to be able to grasp, tighten, cut, and weld the strapping material. For the strapping head, it usually includes a tensioning assembly and a sealing assembly, in actual use, the tensioning assembly is configured with tensioning jaws to draw and apply a tensioning force to the strapping material, while the sealing assembly welds and cuts the strapping material mainly through the sealing element and cutter. 
     However, in the process of strapping the goods with a conventional strapping machine, the goods usually need to be wrapped with multiple strapping tapes, and the front and rear and left and right sides of the goods need to be strapped respectively. In order to meet the strapping requirements of the goods in different directions, it is necessary to configure two strapping machines on the conveyor belt, one of which performs the strapping operation of the front and rear strapping belts, and the other performs the operation of the front and rear strapping belts. The configuration of two strapping machines increases the operating cost on the one hand, and occupies a large factory area on the other hand. 
     SUMMARY 
     Therefore, how to design a strapping technology with small footprint and low operating cost is the technical problem to be solved by the present invention. 
     The present invention provides a rotary translational strapping apparatus and strapping method thereof, which can reduce the footprint of the apparatus and reduces operating costs. 
     The present invention provides a rotary translational strapping apparatus, comprising: 
     a support frame; 
     a rotary module comprising a rotary guide, a rotary frame and a first driving mechanism, the rotary guide is disposed on a top of the support frame, the rotary frame is rotatably disposed on the rotary guide, the first driving mechanism is used for driving the rotary frame to rotate relative to the rotary guide; 
     a translational strapping module comprising a sliding mount, a strapping head, a strapping chute and a second driving mechanism, the sliding mount is slidably disposed on the rotary frame, the strapping head is disposed on the sliding mount and which is movable up and down, the strapping chute is disposed on the sliding mount, the second driving mechanism is used to drive the sliding mount to reciprocate relative to the rotary frame, wherein a first detection module for detecting a size of items to be strapped is disposed on the sliding mount. 
     Further, the sliding mount is further provided with a second detection module for detecting a position of a forklift hole on a tray carrying items to be strapped. 
     Further, the rotary guide comprises a swivel bearing, the fixed portion of the swivel bearing is disposed on a top of the support frame, and the rotary frame is disposed on a rotating portion of the swivel bearing. 
     Further, the rotary guide further comprises an annular slide rail, the annular slide rail is surrounded on an exterior of the swivel bearing and is disposed on a top of the support frame, the rotary frame is also slidably disposed on the annular slide rail. 
     Further, the rotary frame includes two cross beams and at least one reinforcement beam, the reinforcement beam is connected between the two cross beams; each of the cross beams is provided with a guide rail, and the sliding mount is slidably disposed on the guide rails. 
     Further, two ends of the sliding mount are provided with downwardly extending connection brackets; the strapping chute comprises two side belt grooves distributed on both sides of the strapping head and are disposed oppositely, the side belt grooves are vertically disposed on the connection brackets on the respective sides; wherein, a lower end of at least one of the side belt grooves is provided with a laterally disposed bottom belt groove. 
     Further, a bottom of the connection bracket is provided with a laterally arranged second telescopic mechanism, and the bottom belt groove is provided on a moving portion of the second telescopic mechanism. 
     Further, the sliding mount is further provided with a third telescopic mechanism and a lifting platform, the third telescopic mechanism is provided vertically on the sliding mount, the lifting platform is provided on a moving portion of the third telescopic mechanism, the strapping head is provided on the lifting platform. 
     Further, a film wrapping module is provided on the connection brackets for conveying the film outwardly and wrapping the film around the items to be strapped. 
     The present invention also provides a strapping method for a rotary translation baler apparatus mentioned above, comprising: conveying the items to be strapped below the support frame, moving the translational strapping module in a first direction, and performing multiple strapping operations on the item, and then rotating the translational strapping module 90 degrees and moving in a second direction to perform multiple strapping operations on the items. 
     Further, the strapping method specifically comprising: 
     Step 1, moving the translational strapping module along the first direction and measuring a length dimension of the items to be strapped in the first direction, after the items to be strapped are conveyed below the support frame; 
     Step 2, calculating a strapping quantity and a strapping position of a strapping tape in the first direction, according to the measured length dimension information of the items to be strapped in the first direction; 
     Step 3, moving the translational strapping module in a reverse direction of the first direction, and bundling the strapping tape at the calculated strapping position on the items to be strapped; 
     Step 4, rotating the translational strapping module to rotate 90 degrees outside of the items to be strapped by a rotary module, and moving the translational strapping module in a second direction and measuring a length dimension of the items to be strapped in a second direction; 
     Step 5, calculating a strapping quantity and a strapping position in the second direction, according to the measured length dimension information of the second direction; 
     Step 6, moving the translational strapping module in a reverse direction of the second direction, and bundling the strapping tape at the calculated strapping position on the items to be strapped. 
     The present invention provides a rotary translational strapping apparatus and strapping method thereof, wherein, a rotary module drives a translational strapping module to move to meet the strapping requirements of different positions of the items to be strapped, and the rotary module drives the translational strapping module to rotate to meet the strapping requirements of items in different directions; during the strapping process, the items to be strapped do not need to be moved, and only the rotation and movement of the translational strapping module needs to be driven by the rotary module to meet the requirements of vertical cross-strapping on the surface of the items, so that, there is no need to configure two strapping apparatuses, on the one hand, the operating cost of the enterprise is reduced, and on the other hand, the rotary translational strapping apparatus occupies a smaller area than the two apparatuses. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a first schematic structural view of the rotary translational strapping apparatus of the present invention; 
         FIG.  2    is a second schematic view of the rotary translational strapping apparatus of the present invention; 
         FIG.  3    is an enlarged fragmentary view of area A of  FIG.  2   ; 
         FIG.  4    is an enlarged fragmentary view of area B in  FIG.  2   ; 
         FIG.  5    is a schematic structural view of a rotary module of the rotary translational strapping apparatus of the present invention; 
         FIG.  6    is an exploded view of the rotary module of the rotary translational strapping apparatus of the present invention; 
         FIG.  7    is a schematic structural view of a translational strapping module of the rotary translational strapping apparatus of the present invention; 
         FIG.  8    is third schematic view of the rotary translational strapping apparatus of the present invention. 
     
    
    
     EMBODIMENTS OF THE INVENTION 
     As shown in  FIGS.  1 - 7   , the present invention provides a rotary translational strapping apparatus, comprising: 
     support frame  1 ; 
     a rotary module  2  comprising a rotary guide  21 , a rotary frame  22  and a first driving mechanism  23 , the rotary guide  21  is disposed on a top of the support frame  1 , the rotary frame  22  is rotatably disposed on the rotary guide  21 , the first driving mechanism  23  is used for driving the rotary frame  22  to rotate relative to the rotary guide  21 ; 
     a translational strapping module  3  comprising a sliding mount  31 , a strapping head  32 , a strapping chute  33  and a second driving mechanism  34 , the sliding mount  31  is slidably disposed on the rotary frame  22 , the strapping head  32  is disposed on the sliding mount  31  and which is movable up and down, the strapping chute  33  is disposed on the sliding mount  31 , the second driving mechanism  34  is used to drive the sliding mount  31 to reciprocate relative to the rotary frame  22 . 
     In actual use, the strapping head  32  is supplied with a strapping tape from an outer strapping material dispenser for strapping, and the specific structure of the strapping head  32  may be referred to as a strapping head in a conventional strapping machine, which is not limited or described herein. At the same time, as far as the strapping chute  33  used in conjunction with the strapping head  32  is concerned, it is used for the transmission of the strapping tape output from the strapping head  32 , and in the process of tightening the strapping by the strapping head  32 , the strapping tape can be released from the strapping chute  33  and bound to the surface of the items to be strapped. Likewise, for the specific structural form of the strapping chute  33 , which may be referred to the strapping chute structure in a conventional baler, which will not be limited or described herein. 
     During the strapping process, the requirement for rotation of the translational strapping module  3  is satisfied by the rotary module  2 , and the translational strapping module  3  can drive the strapping head  32  and the strapping chute  33  to translate. Furthermore, the translational strapping module  3  can be rotated around the items to be strapped to meet the strapping requirements in two mutually perpendicular directions, and at the same time, the translational strapping module  3  can move along the items to be packed to form multiple strapping tapes on the items. The specific process is as follows: the items to be strapped are transported to the strapping station formed by the support frame  1  through a conveyor line or a forklift, and the translational strapping module  3  is driven by the rotary module  2  to move along the first direction (such as length direction) of the items to be strapped, and multiple strapping operations are performed on the items at a set distance apart, so that a required number of strapping tapes are bundled on the items; then, the translational strapping module  3  is driven to rotate on the outside of the items by the rotary module  2 , so that the translational strapping module  3  rotates to a second direction (such as width direction), and then the translational strapping module  3  moves in the width direction, and completes the binding requirements of the plurality of strapping tapes in the second direction. 
     During the strapping process, the items to be strapped do not need to be moved, and only the translational strapping module  3  needs to be driven to rotate and move by the rotary module  2 , which can meet the requirements of vertical cross-strapping on the surface of the items, so that there is no need to configure two strapping apparatuses, on the one hand, the operating cost of the enterprise is reduced, and on the other hand, the rotary translational strapping apparatus occupies a smaller area than the two apparatuses. 
     Further, since the overall weight of the translational strapping module  3  is relatively heavy, in order to ensure that the translational strapping module  3  can be carried by the rotary module  2  stably and reliably and drive it to rotate, the rotary guide  21  includes a swivel bearing  211  having a fixed portion disposed on the top of the support frame  1 , and the rotary frame  22  is disposed on the revolving portion of the swivel bearing  211 . Specifically, the swivel bearing  211  has smooth rotational performance and good load bearing capability, the swivel bearing  211  can carry the overall weight of the translational strapping module  3  by the swivel bearing  211 , so that the rotary frame  22  is driven to rotate by the first driving mechanism  23  to meet the rotational requirements of the translational strapping module  3 . 
     Preferably, in order to further improve the stability of rotation and the safety of use, the rotary guide  21  further includes an annular slide rail  212 , the annular slide rail  212  is surrounding the exterior of the swivel bearing  211  and disposed on top of the support frame  1 , and the rotary frame  22  is slidably disposed on the annular slide rail  212 . The annular slide rail  212  is located at the periphery of the swivel bearing  211  and is used to guide the rotation of the rotary frame  22 , the annular slide rail  212  is used to guide the rotation of the rotary frame  22  while the annular slide rail  212  is used to assist the rotary frame  22  with load bearing weight, and further it is more advantageous for improving the rotation stability and use safety reliability of the rotary frame  22 . The annular slide rail  212  is provided with an annular guide groove  2121 , the rotary frame  22  is provided with a roller  220 , and the roller  220  is positioned in roller  220  in the annular guide groove  2121  to roll. Specifically, the rotating frame  22  meets the requirements of guide sliding and bearing weight by configuring the rollers  220  to cooperate with the annular guide groove  2121  on the annular slide rail  212 . Wherein, the annular slide rail  212  may be processed by using steel components such as I-beams. 
     Still further, for the rotary frame  22 , the translational strapping module  3  is carried thereon, and can meet the sliding requirements of the translational strapping module  3 . To this end, the rotary frame  22  may include two cross beams  221  and at least one reinforcement beam  222 , the reinforcement beam  222  is connected between the two cross beams  221 ; each cross beam  221  is provided with a guide rail  2211  on which a sliding mount  31  is slidably disposed. Specifically, the reinforcement beam  222  is welded between the two cross beams  221 , and the reinforcement beam  222  is connected to the rotating portion of the swivel bearing  211  by bolting or the like, at the same time, the roller  220  is mounted at the end of the cross beam  221 , so that the cross beam  221  rides on the annular slide rail  212 . A guide rail  2211  is provided on the cross member  221  for guiding the sliding movement of the sliding mount  31  in the translational strapping module  3 , thereby ensuring a smooth sliding movement of the sliding mount  31 . Wherein, the top of the sliding mount  31  is provided with two oppositely disposed mounting brackets  311 , the mounting brackets  311  are provided with sliders  312 , and the sliders  312  are slidably disposed on a corresponding guide rail  2211 . 
     Further, in order to meet the installation requirements of the strapping chute  33 , two ends of the sliding mount  31  are provided with downwardly extending connection bracket  313 , and the strapping chute  33  includes two side belt grooves  331  and two bottom belt grooves  332 , the side belt grooves  331  are distributed on two sides of the strapping head  32  and are oppositely disposed, the side belt grooves  331  are provided vertically on the connection bracket  313  on the corresponding sides. Wherein, a lower end of at least one of the side belt grooves  331  is provided with a laterally arranged bottom belt groove  332 . Specifically, the sliding mount  31  is integrally constructed with a frame structure, and two sides of the sliding mount  31  are provided with corresponding connection brackets  313 , the connection brackets  313  extend downwardly from the top of the sliding mount  31 , so that satisfying the requirement that the side belt grooves  331  be installed longitudinally, and at the same time, the bottom belt groove  332  is installed laterally at the bottom of the connection brackets  313 . In the actual use process, the bottom belt groove  332  can be respectively provided on a bottom of the side belt grooves  331 , so that the bottom channel groove  332  on two sides move in opposite directions during strapping; or, the bottom belt groove  332  can be provided on the bottom of one side belt groove  331 , so that the bottom channel groove  332  on only one side move during strapping. Eventually, a complete endless loop-like channel is formed by the strapping head  32 , the side belt groove  331  and the bottom belt groove  332 , and which is used to transport the strapping tape. 
     Hereinafter, the configuration of the two bottom belt grooves  332  is taken as an example for description. For the conveying path of the strapping tape, the strapping tape is supplied to the strapping head  32  by the outer strapping material dispenser, the strapping head  32  first transports the strapping tape to one side belt groove  331 , the strapping tape output from the strapping head  32  passes through the other side belt groove  331  and the bottom belt groove  332  under this side are conveyed, then enter the bottom belt groove  332  under the other side and enter the side belt groove  331  on the corresponding side upward, and eventually, the strapping tape is returned to the strapping head  32 . The conveying method for the strapping tape is similar to that of the strapping tape in the conventional strapping machine, and will not be limited or described herein. 
     Wherein, in order to position the strapped items during the strapping process, a positioning assembly  35  is further provided on the connection bracket  313 , the positioning assembly  35  includes a first telescopic mechanism  351  and a pressing member  352 , the first telescopic mechanism  351  is laterally provided on the connection bracket  313 , the pressing member  352  is provided on the moving portion of the first telescopic mechanism  351 , the pressing member  352  is located on one side of the side belt grooves  331 . Specifically, when the items are strapped, the items will be positioned between the two connection brackets  313 , and then the first telescopic mechanism  351  on both sides are actuated to make the pressing member  352  abut against the side of the items, thereby realize the strapping and positioning of items. The representation entity of the first telescopic mechanism  351  may adopt a structural form such as an air cylinder, an electric push rod, or an oil cylinder. 
     In addition, during the rotation and movement of the translational strapping module  3 , in order to prevent the bottom belt groove  332  from hitting the pad on the bottom tray of the items, a retractable structure design is adopted for the bottom belt groove  332 , specifically: the bottom of the connection bracket  313  is provided with a laterally disposed second telescopic mechanism  36 , the bottom belt groove  332  is provided on the moving portion of the second telescopic mechanism  36 ; after the second telescopic mechanism  36  drives the bottom belt groove  332  to extend, the two bottom belt grooves  332  are butted together, and the bottom belt groove  332  is connected with the side belt groove  331  on the corresponding side. Specifically, the second telescopic mechanism  36  can drive the bottom belt groove  332  to move, so that the two oppositely disposed bottom belt grooves  332  move synchronously in the opposite direction. When strapping is required, the second telescopic mechanism  36  drives the bottom belt groove  332  to extend and moves toward the inside of the connection bracket  313 , eventually, the two bottom belt grooves  332  are butted together; at the same time, the bottom belt groove  332  and the side belt groove  331  of the corresponding side are also connected. When it is necessary to rotate the translational strapping module  3 , the second telescopic mechanism  36  drives the bottom belt groove  332  to retract, so that the bottom belt groove  332  is retracted to the inner side of the connection bracket  313 , in this way, during the rotation of the translational strapping module  3 , the connecting bracket  313  will rotate around the outside of the items, and at the same time, the bottom belt groove  332  will not touch the items. In order to satisfy the design of small size and compact equipment for the second telescopic mechanism  36 , the second telescopic mechanism  36  preferably adopts a rod less cylinder, so that the overall size of the equipment can be minimized 
     As for the strapping head  32 , a third telescopic mechanism  37  and a lifting platform  38  are also provided on the sliding mount  31 , and the third telescopic mechanism  37  is vertically arranged on the sliding mount  31 , the lifting platform  38  is arranged on the moving portion of the third telescopic mechanism  37 , and the strapping head  32  is arranged on the lifting platform  38 , according to the height requirements of different items during the strapping process. Specifically, the third telescopic mechanism  37  can drive the lifting platform  38  up and down to meet the strapping requirements for different height sized items. Accordingly, in order to enable the lifting platform  38  to lift smoothly, the lifting platform  38  is provided with a guide rod  39  and a sliding sleeve  391  provided on the sliding mount  31 . 
     Wherein, for the first driving mechanism  23  and the second driving mechanism  34 , the driving force is typically provided by means of a motor, and in order to improve the accuracy of controlling the movement and rotation, a servo motor is preferably used to improve the accuracy. For example, a gear is disposed on the motor of the first driving mechanism  23 , and a ring gear is disposed on the rotating portion of the swivel bearing  211 , and the gear meshes with the ring gear for rotating the rotary frame  22 . Likewise, the motor of the second driving mechanism  34  is also provided with a gear, the cross member  221  is provided with a gear rack  2212 , and the gears mesh with the gear rack  2212  to realize the movement of the sliding mount  31 . 
     In a preferred embodiment, in order to realize adaptive adjustment of the position and quantity of the strapping tapes, the sliding mount  31  is provided with a first detection module  301  for detecting the size of the items to be packed. Specifically, the first detection module  301  can detect the size of the items, and during the process of the sliding mount  31  moving along the item, the first detection module  301  can detect the size of the items in the direction during the first detection module  301  follows the sliding mount  31  to move; and then, it is strapped according to a predetermined strapping rule, based on the specific measured size. The rule setting for the strapping quantity of items of different sizes in a certain direction will not be limited or described herein. 
     At the same time, since the bottom of the items to be strapped is typically supported by a tray, the strapping tape requires passing through a forklift hole on the tray and simultaneously avoiding a pad in the bottom of the tray. Considering the influence of the tray, the sliding mount  31  is further provided with a second detection module  302  for detecting the position of the forklift holes on the tray carrying the items to be strapped, and in particular, during movement of the sliding mount  31  along the items, on the one hand, the first detection module  301  can detect the size of the items themselves, and the other hand, the second detection module  302  can also measure the tray under the items to determine the position of the forklift hole on the tray. In this way, during the strapping process, the strapping position and quantity of the strapping tape are determined according to the overall size of the item and the position of the forklift hole on the tray, so as to realize the self-adaptive strapping operation. 
     There are a variety of forms for the representation entities of the first detection module  301  and the second detection module  302 . For example, the first detecting module  301  and the second detecting module  302  can use a photoelectric sensor, and the photoelectric sensor can detect whether there is an object blocking in front of the photoelectric sensor, so that, the size parameters of the items and the position of the forklift hole on the stray can be detected, according to the switch signal of the photoelectric sensor combined with the servo motor to drive the movement and displacement of the sliding mount  31 . Alternatively, the first detection module  301  and the second detection module  302  can use an image collector (such as a camera), to obtain the physical dimensions of the object and the positions of the forklift holes and the pads on the tray using image recognition techniques, and the specific methods related to image processing may be referred to conventional image processing techniques, which are not limited or described herein. 
     Wherein, regarding the manner in which the above-mentioned motor output power realizes the transmission connection, the manner of adding a speed reducer to the rotating shaft of the motor may be adopted, which will not be limited or described herein. 
     The present invention also provides a strapping method for a rotary translation baler apparatus, specifically comprising: conveying the items to be strapped below the support frame  1 , moving the translational strapping module  3  in a first direction, and performing multiple strapping operations on the item, and then rotating the translational strapping module  3  90 degrees and moving in a second direction to perform multiple strapping operations on the items. 
     Specifically: in the actual use process, items to be strapped are transported to the strapping station of the rotary translational strapping apparatus through a conveyor line or a forklift. By moving the translational strapping module  3 , the strapping operation in the first direction is performed, and after the processing is completed, the translational strapping module  3  is rotated and the translational strapping module  3  continuously moved to perform the strapping operation in the second direction. 
     Wherein, the specific strapping operation includes the following steps: 
     Step 1, moving the translational strapping module  3  along the first direction and measuring a length dimension of the items to be strapped in the first direction, after the items to be strapped are conveyed below the support frame  1 . The items are placed at the strapping station formed by the support frame  1 , and then the rotary module  2  drives the translational strapping module  3  to move along the first direction of the items to measure the size of the items in the first direction by the first detection module  301 . 
     Step 2, calculating a strapping quantity and a strapping position of a strapping tape in the first direction, according to the measured length dimension information of the items to be strapped in the first direction. After the translational strapping module  3  slides from one end of the slide rail toward the other end and the measurement is completed in step 1, the items are strapped at a certain distance at the periphery of the item by a specific number of the strapping tape, according to the size of the items in the first direction in combination with a predetermined strapping rule. 
     Step 3, moving the translational strapping module in a reverse direction of the first direction, and bundling the strapping tape at the calculated strapping position on the items to be strapped. Specifically, the translational strapping module  3  is driven to move in the opposite direction to strap the items in the first direction. 
     Step 4, rotating the translational strapping module  3  to rotate 90 degrees outside of the items to be strapped by a rotary module  2 , and moving the translational strapping module  3  in a second direction and measuring a length dimension of the items to be strapped in a second direction. After the strapping operation in the first direction is completed, the translational strapping module  3  needs to be rotated, so that the translational strapping module  3  is rotated to the second direction for cross strapping processing. After the translational strapping module  3  completes the strapping operation in the first direction, it moves to one end of the slide rail to avoid the items, and then rotates 90 degrees again. 
     Step 5, calculating a strapping quantity and a strapping position in the second direction, according to the measured length dimension information of the second direction. When strapping in the second direction, after measuring the size of the items in the second direction at step 4, the strapping position and the number of times of strapping in the second direction are calculated again. 
     Step 6, moving the translational strapping module in a reverse direction of the second direction, and bundling the strapping tape at the calculated strapping position on the items to be strapped. 
     Further, considering the influence of the bottom tray of the items during the strapping process, the step 1 further includes: detecting a location of a forklift hole on the bottom tray of the items to be strapped in the first direction, during the movement of the translational strapping module  3  along the first direction. Specifically, the position of the forklift hole in the first direction of the tray is detected by the second detection module  302 , and when calculating the strapping position, the pad of the tray is avoided so that the strapping tape passes through the forklift hole for strapping. Correspondingly, the step 2 further includes: calculating the number of bundling and the strapping position of the strapping tape in the first direction, according to the measured length and dimension information of the items to be strapped and the position information of the forklift hole in the first direction. 
     Similarly, in the process of strapping the items in the second direction, the step 4 further includes: detecting a position of a forklift hole in the bottom tray of the items to be strapped in the second direction, during movement of the translational strapping module  3  in the second direction; and the step 5 further includes: calculating a number of bunding and a strapping position of strapping tape in the second direction, according to the measured length dimension information of the items to be strapped and the forklift hole position information in the second direction. 
     Based on the above technical solution, optionally, in another embodiment of the present invention, in order to achieve the functional integrated design, after the items are strapped, a film wrapping process is performed on the surface of the items, as shown in  FIG.  8   , and a film wrapping module  4  is provided on one of the connection brackets  313  for conveying the film outwardly and wrapping the film around the items to be strapped. In actual use, after the strapping operation is completed on the items by the translational strapping module  3 ; a rotation of the rotary module  2  can be followed by the sliding mount  31 , and the film is transferred outwardly by the film wrapping module  4  during the rotation of the sliding mount  31 , so that can wrap the film on the strapped items and thereby achieve the automatic wrapping operation. The film wrapping module  4  utilizes the rotational function of the sliding mount  31  to achieve automatic film wrapping, which diverges the function of the apparatus, provides a higher degree of integration, reduces the number of purchases provided in the factory floor, and advantageously reduces the footprint of the apparatus. Wherein, the performance entity of the film wrapping module  4  may be a conventional apparatus, such as a film dispenser in a strapping machine for wrapping a plastic film net around an item disclosed in Chinese Patent No. 2004100353283, of course, those skilled in the art can also use other apparatus capable of transporting the film outwards according to actual needs, which will not be limited or described herein. 
     Here, in order to film items of different heights, a lifting mechanism  41  is provided on the connection bracket  313 , and the lifting mechanism  41  can move the film wrapping module  4  up and down to meet the film wrapping requirements of items of different heights. In addition, the bottom portion is further provided with a clamping mechanism  42  for clamping the end of the film during wrapping of the items, the clamping mechanism  42  clamps the free end of the film, and then, during turning of the film wrapping module  4 , to enable the film to be more tightly wrapped around the surface of the items. Similarly, in order to achieve automatic film breaking, a film breaking mechanism  43  is provided to automatically cut the film after it has been wound. With respect to the embodied entities of the clamping mechanism  42  and the film breaking mechanism  43 , reference may be made to a related configuration in a strapping machine for wrapping a plastic film net around an item disclosed in Chinese Patent No. 2004100353283, which is not limited or described herein. 
     For the first direction and the second direction described in the above embodiments, the length direction of the items may be the first direction, and the width direction of the items may be the second direction, which is not limited herein.