Method for making a spiral coil having spaced turns

A method for winding a spiral coil involving the steps of winding a metal band on a mandrel in advance of the mandrel continuously forming a succession of regularly-spaced deformations in the band edges which protrude alternately from the opposite band surfaces to space the coil turns. During the winding, and for each successive turn, the sequence of deformations is shifted along the band, in one direction or the opposite, by a predetermined dimension such that oppositely-protruding deformation on adjacent turns come into tangential locking engagement with each other at the start of every succeeding turn and all projections on each turn come into such locking engagement. Apparatus for performing the method is also disclosed.

FIELD OF THE INVENTION 
This invention relates to a method for making a coil from a band which is 
wound with winding intervals or spacings between turns and whose band 
edges reveal a sequence of regularly-recurring, locally-limited 
deformations that protrude out of both band surfaces to determine the 
interval or space between neighboring turns, the deformations being 
shifted with each turn so as to lockingly engage all oppositely-protruding 
deformations of adjacent turns in a tangential direction. 
In the following description and throughout the specification and claims, 
the terms listed below are defined as follows: 
"Winding" means a single turn or convolution; 
"Interval" means distance, space or spacing; 
"Composite thrust" means that that force preventing the free displacement 
of the turns of the coil parallel to each other; this force may be due to 
friction or to form-locking by interlocking engagement of turn 
deformations; 
"Composite material diameter" means the diameter of the coil comprising the 
gauge thickness of the band plus spaces between turns; 
"Compound thrust" means the same as "composite thrust". 
DESCRIPTION OF THE PRIOR ART 
It is known that, by punching the edges of a belt in the immediate edge 
area, one can produce edge deformations either in every other turn or 
continually in all turns and, that the depth of these edge formations, 
will fix the spacing between adjacent turns, whereby the composite thrust 
is engendered from winding to winding exclusively by the friction between 
the edge deformations and the neighboring turns. 
In order to become independent of the friction and in order to increase the 
composite thrust of neighboring turns, for the purpose of achieving an 
even greater composite material diameter at maximum width and thus 
correspondingly greater composite material weights, it is known that one 
can, with a tool working in a rotating manner, produce two types of edge 
deformations in a deep-drawing manner, one of which serves only as an 
individual half-wave oriented toward one surface primarily to ensure the 
maintenance of the winding intervals, while the other one has sinusoidal 
double-half-waves oriented toward both band surfaces, see U.S. Pat. No. 
3,724,249 for example. The individual half-waves of the double-half-waves 
are oppositely oriented and are connected so that, in addition to ensuring 
the turn spacing, they function to bring about the compound thrust of 
neighboring windings in a form-locking manner in the direction of winding. 
Because these two connected sinusoidal half-waves, oriented toward both 
band surfaces, are lockingly engaged in the outer areas of the half-waves 
at adjacent coil turns, correspondingly larger working diameters of the 
drawing tools used to form the deformations are needed. Compared to the 
production of individual half-waves, the production of both 
immediately-successive sinusoidal half-waves, each with the same 
magnitude, requires the working diameter of the tool to be four times as 
great. 
In addition there is the fact that, in forming the known sinusoidal 
double-half-waves, for every turn in the coil the winding jump .DELTA.r 
which equals the increase in coil radius from turn to turn must be 
inserted, where: 
.DELTA. r = h + s 
h = band thickness 
s = turn spacing 
For example, in case of a change in the band thickness h and in the 
constantly-selected turn spacings, the matrix-upper die pairs for the 
production of sinusoidal double-half waves must be changed to produce 
correspondingly-altered oscillation widths because, along with the change 
in the shift of the identical band-edge deformations in neighboring 
windings, which is proportional to the change in .DELTA. r, it is also 
necessary to change the interval of the two differently-oriented 
sinusoidal half-waves in order to achieve the compound thrust form of the 
neighboring windings in a form-locking manner. 
If the tool is not adjusted to a change in .DELTA. r, then the thrust 
compound unit of neighboring windings of course exists only in a 
force-locking manner due to all edge deformations, whereby, as the 
compound material diameter increases, there is a danger of a followup 
slide particularly on the part of the windings that are located furthest 
toward the inside, with a corresponding decrease in their winding 
intervals. 
Only in case of larger band thicknesses and/or winding intervals, does the 
winding jump .DELTA. r and thus the length difference of neighboring 
windings .DELTA. U = 2 .pi..noteq..DELTA.r becomes so great that the 
sinusoidal double-half-wave deteriorates into two individual half-waves 
with sufficient space in between where each wave is produced by itself 
with separate upper-die-matrix pairs. 
In a known metal band (U.S. Pat. No. 2,275,458), the interval between the 
edge deformations is not particularly specified so that there is a danger 
that the deformation of a following winding will run up and align with the 
deformation of the preceding winding and, depending upon which band 
surface the latter protrudes from, it will then seat into this deformation 
so that the free space between windings will not be maintained, or it will 
align with the former so that the free space in this area will be 
enlarged. Above all there is a danger that the individual windings will 
slide up on top of each other because the band will be under traction 
stress during reeling up. This leads to damage to the band surface. After 
completion of the windup of the coil, the latter cannot be freely 
deposited and stored with a horizontally-positioned axis because the 
individual windings would then again be shifted against each other. It is 
therefore necessary first of all to tip over such coils so as to line up 
their axes in vertical directions. This implies an additional effort in 
terms of labor and equipment and thus also costs. 
In another known metal band (German Pat. Laid Open to Inspection No. 
2,054,595 and corresponding U.S. Pat. No. 3,724,249), a separate tool pair 
is proposed for the production of a continuous, angle-like bending of the 
band edges. This bending of the band edges brings about a multiplication 
of their bending strength resistance and thus a considerable increase in 
the inherent rigidity of coils wound up from such band, and the weight of 
those coils, when stored with the axis running horizontally, rests 
exclusively on the two side discs. 
SUMMARY OF THE INVENTION 
The purpose of this invention is to create a method for making coils which 
provides for greater band thicknesses and/or winding interval ranges, as 
well as apparatus for the simultaneous production of the band edge 
deformations and the sequence of locally-limited deformations in the edge 
areas of metal bands, or strips, with which, during the reel-up of such 
metal bands between the first winding and the winch reel, as well as 
between the neighboring windings for the most part in the direction of 
winding and partly against the direction of winding, as well as in the 
axial direction, there will be achieved a form-locking thrust composite as 
prerequisite for winding with countertraction or back traction of a band 
start which is placed around the winch with the help of a belt winder, 
without clamping the band, thus yielding coils with a great inherent 
rigidity. 
This problem is solved in the following manner according to the invention: 
the sequence of local band edge deformations, oriented toward opposite 
band surfaces, is a sequence given by the succession of matrices and upper 
dies on the circumferences of tool carrier wheels, and these local band 
edge deformations, progressively with each winding, are shifted by a 
dimension c.sub.1 in the direction of band movement, or a dimension 
c.sub.2 against the band movement direction, said dimensions considering 
the tool subdivision interval t and the winding jump (increase of coil 
radius from one turn to the next) deriving from band thickness h and 
winding interval s, as compared to the local band edge deformations of the 
preceding winding. 
Due to these relative shifts in the sequence of belt edge deformations by 
the dimension c.sub.1, or c.sub.2, of successive windings, it is made 
certain that all band edge deformations, oriented toward the winding 
mandrel of the particular oncoming winding will be hooked or locked, in 
starting the turn or winding at the initial contact point with the 
oppositely-oriented band edge deformations of the preceding winding. 
The space between the tool and the winch shaft plays no role here even if 
that space were to assume the magnitude of the circumference of the 
largest winding because, between the lengths of coil windings, there is a 
difference of only a few millimeters and because after every rotation of 
the winch shaft, the band length for at least the next winding is present 
in a distorted fashion between the initial contact point and the tool in 
the edge areas. A minor overlap of band material with edge deformations in 
the incorrect orientation during the shifting of the sequence of band edge 
deformations at the end of each run-up winding in one step can be 
permitted. 
By the shift of deformations as described, it is ensured that the 
individual windings will be held so that they cannot shift with respect to 
each other and that, even after the coil is removed from the winch and 
placed on a foundation surface with its axis horizonal, the coil will 
remain standing in a rigid shape so that there cannot be any damage to the 
band surfaces at any time or in any position. 
Due to the resultant thrust composite of neighboring windings they are 
prevented from sliding with great certainty even under considerable 
countertraction. 
Coils wound according to the invention can be subjected to the most varied 
treatments, such as, for example, a blanching, washing, or rinsing 
procedure, an electrolytic coating procedure, an annealing procedure, a 
cooling procedure, a steaming procedure, or combinations thereof. Due to 
their great inherent rigidity and their great standup capacity, these 
openly-wound coils can also be rewound, transported, and placed in 
intermediate storage with their axes in the horizontal direction. 
According to one preferred embodiment, the shifting of the sequence of 
band-edge deformation, uniformly distributed over the circumference of the 
particular newly oncoming winding, by the dimension c.sub.1 in the 
direction of band movement, or, by the dimension c.sub.2 against the band 
movement direction, is generated by a continual positive or negative 
superposition of the amount of tool rotation. 
According to another embodiment, the overall shift of the sequence of band 
edge deformations, to be matched up with the particular oncoming winding, 
by the dimension c.sub.1 or the dimension c.sub.2, is generated by a 
corresponding positive or negative superposition of the amount of tool 
rotation in one step. 
According to yet another embodiment, the entire shift of the sequence of 
band-edge deformations by the dimension c.sub.1 in the direction of band 
movement, or by the dimension c.sub.2 against the band movement direction, 
is accomplished by the action, alternating from winding to winding of two 
identical tool-carrier wheel pairs which are arranged one after the other 
in the band movement direction and which run synchronously with each other 
and with the band movement speed, and whose mutual axial interval or 
spacing can be continually changed during operation. 
The command to employ one or the other tool pair, as a time function of the 
alternating direction (close forward tool pair, open rear tool pair, and 
vice versa), the band speed, and the spacing of the tool pairs is so given 
that no band portions without local edge deformations will be left. 
According to another embodiment, the shift of the sequence of band edge 
deformations by the dimension c.sub.1 in the band movement direction, or 
by the dimension c.sub.2 against the band movement direction, is always 
accomplished at the same angle position in the coil. 
For certain band thickness ranges and coil dimensions, it may be required, 
with respect to the standup capacity of the band rings during storage with 
their axes running horizontally, that, for the purpose of distribution of 
the overlap sectors of the band material of neighboring windings, with the 
inadequate form-locking thrust security which is possible, the shift of 
the sequence of the band-edge deformations by the dimension c.sub.1, or by 
the dimension c.sub.2, will be generated in a manner distributed over 
several angle positions in the coil. 
According to still another embodiment of the invention it is provided that 
the number of the band edge deformations, oriented toward the upper and 
the lower band surface, and their mutual interval should be equally large. 
This ensures that, following the corresponding shift of the sequence of 
band-edge deformations, each outwardly oriented deformation of the last 
turn will be hooked up with the corresponding inward deformation of the 
just oncoming turn at the run-up point of the winding in a form-locking 
manner in the direction of windup and will simultaneously fix the winding 
interval at this point. 
The number of band-edge deformations, oriented toward the upper and lower 
band surface, can be equal and their mutual spacing can be identical, or 
unequal. 
In this arrangement of the edge deformations likewise, it can be ensured 
that, after the corresponding shift of the sequence of band-edge 
deformations, the outwardly-oriented band edge deformations of the just 
oncoming winding will be hooked in with the corresponding inward 
deformations of the oncoming windings in the direction of windup in a 
form-locking manner, and simultaneously, like all other band-edge 
deformations, their depth will fix the winding interval at their points of 
engagement. 
The remaining inwardly oriented band-edge deformations furthermore, at 
their points, via their friction in relation to the neighoring windings, 
make a contribution to the thrust composite of neighboring windings both 
in the windup direction and against the windup direction. 
According to another feature of the invention, the thrust composite of 
neighboring windings develops in a form-locking manner, also in the 
direction of the windup axis, due to band-edge deformations which are 
located diagonally with respect to their band edges and which, together 
with the band-edge deformations in the area of the other band edge, 
produce an arrow-shaped arrangement. 
In order to limit the necessary additional expenditure for the more 
complicated, screw-shaped design of the matrices and upper dies, it is 
enough in many cases to design and arrange only a part of the matrices and 
upper dies on the tool carrier wheels in the area of both band edges in 
such a way that, for the purpose of creating an arrow-shaped arrangement 
which will secure the thrust composite also in the axial direction in a 
form-locking manner, only a part of the band-edge deformations in the area 
of both band edges will be arranged diagonally with respect to their band 
edges. 
The arrangement of the band edge deformations at an angle with respect to 
their band edges can be omitted if, before the local deformation of the 
band edges in terms of time, fine-toothed grooves are located in the 
longitudinal direction of the band or at a slant with respect to their 
band edges, in the most immediate band edge area. 
In order to balance out the polygonizing effect deviations of the windings 
from their circular shape, due to the only point-shaped bracing of the 
windings, taking place at certain intervals, and the attendant of the 
winding lengths, as well as the influence of the elastic lowering of the 
windings, pointing in the same direction, due to the point stresses from 
the superposed windings, it is provided, according to another feature of 
the invention, that the winding intervals or turn spacings are changed as 
a function of the windup radius. The corresponding change in the 
deformation depth of the band-edge deformations can here be brought about 
during operation through a change in the adjustment of the tool carrier 
wheels and/or the positioning of the upper dies in the tool carrier 
wheels. 
In case of certain band dimensions and/or coil weights, it may be necessary 
to increase the standup capability of such coils which are stored with the 
axis running horizontally, by supporting the thrust composite of the 
neighboring windings, supported only by friction or in a force-locking 
manner against the windup direction, through edge deformations which, 
added at individual points, will in a form-locking manner secure the 
thrust composite against the windup direction. 
For this purpose, after the accomplishment of the shift in the sequence of 
band-edge deformations, in one step by the dimension c.sub.1, or by the 
dimension c.sub.2, at one point in each winding, practicably in each case 
after half a turn has been made, one additional rotation amount of the 
tool is performed for a short time and then taken back or subtracted, as 
by increasing the speed of rotation of the tool and then decreasing the 
speed to normal, in order to accomplish the form-locking hook-in of 
neighboring windings at some points against the windup direction. 
In case of a shift of the band-edge deformation sequence, distributed 
uniformly over the winding circumference, the short-time additional 
rotation imparted to the tool and its return may be accomplished at any 
desired point in each winding. 
The superposition of the rotation movement imparted to the tool according 
to this method can, for example, be accomplished with a known planetary 
gear or with a correspondingly-controlled electric or hydraulic drive 
motor. In order to connect the last winding of the coil with the composite 
coil unit firmly but nevertheless easily separable, without any tie-up 
means, such as, for example, a packaging tape, it is proposed according to 
the invention that the shift of the sequence of edge deformations in or 
against the band movement direction in the band material be generated for 
at least the last winding in such a magnitude which, in combination with 
the greater curvature imparted to this winding shortly before windup 
completion, this is, a curvature greater than would correspond to its 
position in the wound-up coil and its resultant elastic encompassing 
clamping, will assure the hook-up of its corresponding band edge 
deformations with those of the particular preceding winding against the 
windup direction. 
The invention also comprises a device for the accomplishment of the method 
according to the invention whereby -- for the production of the local 
deformations which act in a form-locking manner, which ensure that the 
band interval, and which are found in the edge sectors of the band in the 
area of both band edges, there are provided mutually synchronously 
rotating tool carrier wheel pairs on whose circumferences are mounted the 
matrixes and upper dies for the local deformation of the edge areas of the 
band. 
According to another feature of the invention it is provided that the 
number of matrixes and upper dies be equal in the corresponding tool 
carrier wheels, that their mutual interval be equal or unequal, and that, 
in terms of their arrangement, the matrix and the upper die follow each 
other on the circumferences of the tool carrier wheels. 
According to another feature of the invention, the number of matrixes and 
upper dies in corresponding tool carrier wheels can be uneven and their 
mutual interval can for the most part be identical but, for the remaining 
part, it can be unequal. 
In the device according to the invention for the production of the local 
deformations in the band's edge areas, deformations which act in a 
form-locking manner, the uniform distribution of the shifts of the 
sequence of band edge deformations over the entire winding circumference 
by the dimension c.sub.1 in the direction of belt movement, or by the 
dimension c.sub.2 against the band movement direction, is accomplished 
through a continual rotation path superposition of the tool carrier wheel 
pairs in such a manner that, for each winch revolution, an additional 
amount of rotation is superposed upon the tool rotation required for said 
revolution and said additional amount of rotation can be adjusted as 
desired during operation. 
In another embodiment of the invention for the production of the 
form-locking-acting local deformations in the edge areas of the band, it 
is provided that the shift in the sequence of band-edge deformations by 
the dimension c.sub.1 or c.sub.2 is achieved at the end of each run-up 
winding, or at any desired point of the up-running winding through a 
short-time superposition of the rotation movement of the tool carrier 
wheels by a certain positive or negative rotation angle .beta. which can 
continually be changed during operation. 
Because of their compact design, the machines of the invention are 
particularly suitable where space must be saved, for example, at the 
outlet of a cold-rolling mill, in order to provide the finished rolled 
band with a passage in front of the windup winch to form the edge 
deformations to achieve the winding intervals in the wound-up coil on the 
windup winch. 
The shift of the sequence of band edge deformations by the dimension 
c.sub.1 or c.sub.2, according to the invention, is accomplished by means 
of a superposition of the rotation movements of the tool carrier wheels, 
adapted to the band movement speed, through the use of a planetary gear or 
through a correspondingly controlled electrical or hydraulic drive motor. 
In another embodiment of the apparatus according to the invention, the 
continual rotation path superposition of the tool is brought about by 
means of a worm gear drive acting upon the outside wheel of a planetary 
gear. 
In still another embodiment of the invention, it is possible, by a 
corresponding axial shift of a cylindrical worm gear, for example, by 
means of a hydraulic piston, to superpose, in one step, an additional 
negative or positive rotation of the tool, using a worm gear drive. 
The tool carrier wheels are preferably equipped with a freely rotating, 
elastically embedded downholder disc with separate drive. Between an upper 
and a lower downholder disc, whose circumferential speed corresponds to 
the band movement speed, the band is conducted steadily, while the 
outermost band edge areas, in which the sequence of local band edge 
deformations is produced, are in contact with the tool carrier wheels 
essentially only in the area of the matrixes and the upper dies. 
According to another embodiment of the invention the downholder discs are 
so designed that their band-edge area is bent at an angle. 
The tool carrier wheels are elastically connected with their drive to 
compensate for the minor differences between the band movement speed and 
the circumferential speed of the matrixes and upper dies on the 
circumferences of the tool carrier wheels which, in each case through the 
engagement of matrix and upper die, assume the movement speed of the band. 
According to another embodiment of the invention, for the production of 
edge deformations which act in a form-locking manner, there are provided, 
in the area of each band edge, two tool carrier wheel pairs which are 
arranged one after the other and which run synchronously with respect to 
each other. 
The shift of the sequence of the succession of band edge deformations at 
the end of each run-up winding, given by the particular tool carrier wheel 
pair in working position, is accomplished by closing the open tool carrier 
wheel pair and by opening the tool carrier wheel pair which happens to be 
in working position. This enables taking into consideration the 
alternating direction of movement in band passage direction from the rear 
to the forward tool carrier wheel pair and the other way around, as well 
as the band speed, in the time sequence of the adjustment commands for 
both tool carrier wheel pairs, and further enables changing the reciprocal 
position of corresponding edge deformations in neighboring windings by 
altering the reciprocal interval of the tool carrier wheel pair 
continually during operation. 
The adjustment command for starting the shift of the sequence of edge 
deformations is triggered by a signal revolving with the winch shaft. 
According to another embodiment, the adjustment command is always given 
when the winch shaft is in the same angle position. For certain band 
thickness ranges and coil dimensions, it may be necessary to delay the 
onset of this shift in terms of time somewhat as compared to the 
triggering in the case of the preceding winding, and this is to be done by 
means of a delaying member in the command chain from the signal member, 
revolving with the winch shaft, up to the activating member used in 
shifting the succession of edge deformations. In this way can be achieved 
the following: the overlap area of the band material of the neighboring 
windings is further rotated by a small angle, progressing always from 
winding to winding, with the inadequately form-locking thrust which is 
possible there, so that a form-locking thrust for neighboring windings 
will be obtained which will be extensively homogeneous over the entire 
coil. 
Between the upper and the lower tool carrier wheel of a tool carrier wheel 
pair it is necessary to establish an maintain exact synchronization. In 
the adaptation of the axial intervals of the tool carrier wheels of a tool 
carrier pair to the differing band thicknesses and/or differing 
depressions of the edge deformations, the exact synchronization between 
the upper and the lower tool carrier wheel takes place by use of a grooved 
roller gear and driven end of shaft output spindles with identical, 
unchanging inclination angles with respect to their band edge. 
Because the adjusting paths of the tool carrier wheels, for the purpose of 
adaptation to differing band thicknesses and/or differing depressions in 
the edge deformations, amount only to a few millimeters, a tool carrier 
wheel pair may be selected in which, with unchanging axial interval, 
during operation, the necessary changes in the adjustment of the tools is 
accomplished by radial adjustment of the upper dies in the tool carrier 
wheels. This solution, with its internal change of the adjustment, is 
advantageous when it is important to save space. 
According to another embodiment, for the production of edge deformations 
which act in a form-locking manner, a tool carrier wheel pair may be 
selected in which, in case of an unchangeable axial interval, the 
necessary changes in the adjustment of the tools, for different band 
thicknesses and different depths of the edge deformations, is achieved by 
swinging a tool carrier wheel with its axis around the center of a gear 
wheel which, with an identical gear wheel, establishes the forced 
synchronization of both tool carrier wheels, the former gear wheel having 
spherically shaped gear rim outside surfaces and teeth. 
According to another embodiment for the production of edge deformations 
acting in a form-locking manner, the tool carrier wheels in the running 
plane of the matrices and upper dies, receive elastically embedded 
downholder rings which, during the adjustment of the tool carrier wheels 
for production of edge deformations which protrude even more from the band 
surface, using the same tool, allow the upper dies to protrude 
correspondingly further out of the running plane, so that the upper dies, 
in cooperation with the matrices, will produce correspondingly more deeply 
impressed edge deformations. 
For the production of edge deformation in bands of great thickness, 
including a greater range of thickness, with the same tool, matrixes which 
are elastically supported in a tangential direction and which 
automatically adjust to the greater band thickness through opening against 
an elastic closing force are used. 
In order to provide unbordered bands, having width fluctuations with edge 
deformations whose spacing from their band edges will not change, it is 
proposed that the axes of the tool carrier wheels on both sides of the 
band be made to swing independently of each other by a small angle in the 
band plane, so that the tool carrier wheels can follow the width change of 
the band on both sides independently of each other without generating a 
force which would cause the band to bulge, arch, or tighten in a lateral 
direction. 
To reel up the band provided with edge deformations on a smooth winch shaft 
without clamping the start of the band in a winch clamping slit, it is 
suggested that the winch shaft be provided with carrying bars that can be 
moved in a radial direction, and according to the invention this winch 
shaft is so designed that, on a driven carrying pipe, for the purpose of 
form-locking tansmission of the carrying pipe circumferential force from 
the winding moment into the first band winding, there are arranged 
radially adjustable carrying bars which brace the coil and which are 
located at least in the space contiguous to the deformations of the band 
edges, and are oriented toward the carrying pipe, so as to permit 
adjustment to differing band thicknesses. Upon completion of the winding 
process, these carrying bars are taken back radially so as to permit the 
coil to be pushed off the carrying pipe. 
Since the band thickness differences usually amount to only a few 
millimeters, the winch shaft must cover only a minor adjustable spread 
range so that even traditional winch shaft constructions having adjustable 
windup diameters and superposed carrying bars can be used. 
Because the coil weight rests in the coil side discs, it is possible to 
design the reel-up winch as a double-cone winch having a common drive 
motor and carrying bars with or without clamping slits. 
To prevent slippage of the first winding in the axial direction, the 
carrying bars are provided on their forward edges, those lying in the 
direction of windup, with sawtooth-like recesses. In case of large coil 
diameters and/or large band conteraction, it may be necessary for a part 
of the coil winding moment, which grows with the windup radius, to be 
applied by means of a coil edge drive. 
According to one embodiment of the invention, the drive moment for the coil 
edge drive is imparted into both band edges in a form-locking manner via a 
gear wheel or a toothed chain in the plane of the winch shaft moment. 
According to another embodiment, the drive moment for the coil-edge drive 
is initiated in both band edges in a force-locking manner via friction 
wheels having a cylindrical, spherical, or conical generated surface in 
the plane perpendicular to the band, or at an angle to the plane of the 
winch shaft moment in the outermost winding area. Naturally the devices 
for the band-edge drive must adapt to the growing coil diameter.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
Referring now more particularly to the drawings, FIG. 1 is an illustration 
of the tool carrier wheel pair 4, 41 used to make the edge deformations 2 
and 3 at constant reciprocal interval, said deformations being alternately 
oriented toward the upper and the lower band surface. As illustrated in 
the case of windings or turns 101, 102, 103 of band 1, which are drawn in 
a stretched out, as if unwound, fashion, corresponding edge deformations 
2, 3 of neighboring windings during coiling are shifted by the dimension 
.DELTA. U = 2 .pi. (h + s) with respect to each other (h = band thickness, 
s = winding interval), because of the increasing diameter of the coil. 
Only by and after a relative motion of the tool carrier wheel pair 4, 41, 
with respect to band 1, by the circumferential dimension c.sub.1, made at 
the start of each new oncoming (up-running) winding, can the sequence of 
the individual edge deformations 2, 3 be shifted by the dimension c.sub.1 
in the band passage direction, identical to the windup direction d, so 
that the edge deformations 2, oriented toward the lower band surface, will 
enter into form-locking thrust composite for the windup direction d in the 
just oncoming winding 101 with the edge deformations 3, oriented toward 
the upper band surface, of the preceding winding 102. This shift of the 
sequence of edge deformations 2, 3 is shown by the position of the edge 
deformation 201 -- illustrated with a broken line -- which corresponds to 
the edge deformation 2. It should be noted, from the spacings of 
deformations 2, 3, 201 in turn 101 as compared to the relative positions 
of the deformations in turn 102, that the shift C.sub.1 in the winding 
direction equals the space between a downward deformation 2 and next 
upward deformation 3 plus the increase in turn circumference .DELTA.U 
(equal to 2.pi.h+2.pi.s). The shift C.sub.2 in the direction opposite the 
winding direction to gain the same interlocking of deformations 3 and 201 
equals the space between deformations 2 and 3 minus .DELTA.U. Thus, as is 
apparent from FIG. 1, C.sub.1 plus C.sub.2 equals t, the space between 
consecutive deformations 2. 
In FIG. 2 is illustrated the point-by-point, form-locking thrust composite 
of neighboring windings, attained through the said shift C.sub.1 of edge 
deformations 2, 3, for several winding 101, 102, 103 shown uncoiled. The 
subdivision interval of identical edge deformations is labeled t. Note 
that all deformations projecting toward one another between adjacent turns 
are tangentially interlocked. 
In FIG. 3 is illustrated the effect of the shift c.sub.1 of the succession 
of band 1, edge deformations 2, 3 of FIG. 1 and 2 in case of the oncoming 
(up-running) winding. Only after shift of the edge deformation sequence 2, 
3 by the dimension c.sub.1 is the oncoming winding of band 1 hooked up 
with the previously wound up band winding in a point-by-point form-locking 
thrust composite. 
According to FIGS. 4, 8, 9 and 10, the thrust composite is achieved in the 
windup direction d of FIG. 10 (in other words, for the thrust forces 
F.sub.1 in FIG. 4) in a form-locking manner through a combination of band 
windings 101, 102 which adjoin, or hook or abut, the edge deformations 2 
and 3, or 201 and 301, FIG. 9. 
As can be seen from FIG. 5, the edge deformations 2 and 3 (at both band 
edges) are so inclined toward the band edges at angle .alpha. that they 
will form an arrow-shaped arrangement together with the edge deformations 
of the opposite band edge not illustrated here, as a result of which the 
neighboring windings will be connected with each other in a form-locking 
manner also in their axial direction and therefore cannot slip out in 
telescope fashion during reel-up and unreeling. 
According to FIGS. 7, 8 and 10, the form-locking thrust composite is 
achieved, against the windup direction d of FIG. 10, for the thrust forces 
F.sub.2, in FIG. 7, with a combination of the lower and upper edge 
deformations such that the interval b in FIG. 7, between the edge 
deformations 3 oriented toward the upper band surface and the edge 
deformations 2, running ahead and oriented toward the lower band surface, 
is smaller than half of the interval of the two neighboring edge 
deformations 2, said last interval amounting to half of 2a. Through this 
emphatic eccentricity of the edge deformation 3, oriented toward the upper 
band surface, in the particular preceding band winding 102, is created an 
abutment for the edge deformations 2, oriented toward the lower band 
surface, in the following band winding 101. 
In FIGS. 11 and 12 is illustrated an edge deformation tool for an edge of 
band 1; this tool comprises the tool carrier wheel pair 4, 41, the 
synchronization gear wheels 12, 121, and the main drive, a planetary gear. 
On the main drive shaft 24 is the sun gear 27, which is driven by 
planetary gears 25 (which, by their axles, are attached to the driven gear 
disc 23) as a result of development on the gear wheel 28 which is toothed 
on the inside at 26. As a result of an additional revolution of tooth 
wheel 28 (for example, by means of a gear wheel 29 which, upon every 
revolution of the winch shaft 14 in FIG. 18, is turned further in an 
abrupt (jerky) manner, or also continually by means of an additional drive 
which is not illustrated and whose drive transmission can be altered) it 
is possible to superpose an additional rotation angle .beta. on top of the 
drive rpm shaft 24. 
The strap, band 1, is guided by the downholder discs 31, 311 in FIG. 11. 
If the teeth of gear wheels 12, 121 are given a spherical shape and if, for 
example, swing points of tool carrier wheel 41 is placed in the middle of 
wheel 121, then, by swinging this tool carrier 41 around swing point S in 
the direction of arrows 1 and 1', the interval of corresponding matrixes 
and upper dies of the tool carrier wheels 4, 41 and thus the depth of the 
edge deformation can be altered while retaining the fixed axial interval 
of the gear wheels 12, 121 which take care of the synchronization between 
the upper and the lower tool carrier wheels. 
FIGS. 13 and 14 show a partial view and a partial cross-section through a 
tool carrier wheel 4. Band 1 is guided by the elastically positioned 
downholder disc 31. Down-holder disc 31 rests on the elastic ring 32 and 
is connected with the body of the tool carrier wheel 4 via carrying disc 
33, bearing 34, and an adjustable bracing sleeve 35. Matrices or die 
cavities are firmly arranged in tool carrier wheel 4 while the upper dies 
37 are fastened in clamping bodies 38 and can be adjusted with them in a 
radial direction. 
The radial adjustment of clamping body 38 is accomplished by means of 
spreading elements 39 which act in a toggle manner and which rest on a 
common bracing sleeve 35 which can be rotated against the tool carrier 
wheel 4 in the opposite directions of arrows n, n' and which are moved in 
a radial direction through the rotation of the bracing sleeve 35 with 
respect to the tool carrier wheel 4. The rotation of bracing sleeve 35 and 
its fixation in every required position is brought about by a finger 
sleeve 411 whose fingers 42 engage corresponding axial grooves 43 of the 
bracing sleeve 35. As a result of the axial shift of the shaft 44 which is 
provided with a coarse thread 45 and which rotates with the tool carrier 
wheel 4, the finger sleeve 411, which is firmly connected with shaft 44, 
is likewise shifted in an axial direction and is turned with respect to 
the tool carrier wheel 4. This turn is communicated to the bracing sleeve 
35 via fingers 42 and, through spreading elements 39, brings about the 
radial shift of the clamping bodies 38 and thus of the upper dies 37. 
Via a clutch coupling disc 46 which is firmly connected with the bracing 
sleeve 35 and which is secured, for example, by means of a snap ring 40, 
it is possible to couple the freely rotatable carrying disc 33, on which 
the downholder disc 31 is positioned elastically, firmly to the rotation 
movement of the tool carrier wheel 4 by means of remote-controlled 
coupling clutch pins 47. The coupling pins 47, for example, can be pushed 
forward by means of an electromagnetic, hydraulic, or pneumatic device 48, 
into corresponding boreholes 49 of carrying disc 33 or they can be 
withdrawn from these holes. 
In FIG. 15 the matrices 36 and upper dies 37 which are arranged at angle 
.alpha. diagonally with respect to their rotation axis AA, are shown. 
The downholder discs 31, 311, each of which is elastically positioned on an 
elastic ring 32, can be turned with respect to the tool carrier wheel 4 
via bearing 34. The discs are each separately driven by means of drive 
shaft 313 via a drive disc 312 which rotates with respect to tool carrier 
wheel 4 and their circumferential speed corresponds to the band passage 
speed. By means of a minor axial adjustment of drive disc 312 via drive 
shaft 313, a ring 314, which is elastically embedded in the drive disc 
312, is pressed into the elastic supporting ring 32 of downholder disc 31, 
as a result of which the spring suspension properties of the elastic ring 
32 are changed. The pressure of downholder disc 31, 311 on band 1 can thus 
be changed within broad limits without any change in the adjustment of 
tool carrier wheels 4, 41. 
In the running plane of matrices 36 and upper dies 37, are shown the 
downholder rings 371, 372, which rest on elastic beds 373, 374, through 
which pass the matrices 36 and upper dies 37 which are positioned in tool 
carrier wheels 4, 41. An increase in the press-on pressure of tool carrier 
wheels 4, 41 causes the upper dies to emerge out of the plane of the 
downwholder rings 371, 372 because the latter are pressed into their 
elastic bed 373, 374, as a result of which correspondingly deeper edge 
deformations 2, 3 develop. 
In accordance with FIG. 16, the edge deformations 2 and 3 are formed by 
divided, elastically braced matrices comprising the two parts 361. 362. 
The matrix parts 361, 362 adjust to the differing thicknesses h of band 1 
by means of elastic opening against the pressure of an elastic support 
medium 360. 
According to FIG. 17, the edge deformations 2 and 3 are produced by the 
tool carrier wheel pairs 4, 41 and 5, 51, which rotate synchronously with 
respect to each other, and which, from winding to winding, work 
alternately in a working and resting position. This change in the position 
is produced by an adjustment movement in the direction of arrows k, k', 
respectively, g, g'. 
For any desired turn or winding, for example, the tool carrier wheel pair 
5,51, is in working position, while the tool carrier wheel pair 4, 41 is 
open, as shown in FIG. 17. 
After a revolution of the winch shaft 14 of FIG. 18 (during which the band 
1 was moved by the pair of tool wheels a distance corresponding to the 
length of the winding piled up on the winch shaft and in the process 
received the edge deformations due to the tool carrier pair 5, 51 
according to the sample in FIG. 4) the command for opening the tool 
carrier wheel pair 5, 51 is given by a signal tooth, finger or cam 19 in 
FIG. 18 which revolves with the winch shaft 14 and, with some time delay, 
the command is given them for closing the tool carrier wheel pair 4, 41. 
This time delay for the command to close the tool carrier wheel pair 4, 41 
depends on the axial interval of the two tool carrier wheel pairs 5, 51 
and 4, 41 and on the band speed, in other words, the transportation time 
for band 1 between the tool carrier wheel pairs 5, 51 and 4, 41. 
After another revolution of the winch shaft 14 in FIG. 18 (during which 
another turn of the coil was formed by a length of band with edges 
deformed by the tool carrier wheel pair 4, 41 in the edge area according 
to the sample in FIG. 4) the tool carrier wheel pair 5, 51 gets the 
command for closing and, a short time thereafter, corresponding to the 
transportation time it takes for the band to move from tool carrier wheel 
pair 5, 51 to the tool carrier wheel pair 4, 41, the tool carrier pair 4, 
41 is opened. 
In the two carrier wheel pairs 4, 41 and 5, 51, for example, there are 
provided edge deformation matrices and upper dies at two mutually opposite 
circumferential points, and in the matrices for upper dies there develop 
only two edge deformations 2, oriented toward the lower band surface, at a 
mutual interval amounting to the length 2a in FIG. 7. By means of another 
tool carrier wheel pair 6, 61 (which can be adjusted in the direction of 
arrows f, f', and which, looking in the direction of band movement, can be 
arranged not only in front of but also behind the tool carrier wheel pairs 
4, 41 and 5, 51) edge deformations 301, FIG. 10, are produced at the 
points recessed, or to be recessed, according to FIG. 7, in the tool 
carrier wheel pairs 4, 41, respectively, 5, 51, oriented only toward the 
upper band surface, and the interval b (FIG. 7) of these deformations from 
the preceding edge deformation to the edge deformation 2 which is oriented 
toward the lower band surface is smaller than half of the interval of the 
two edge deformations 2 which are oriented toward the lower band surface, 
said interval amounting to half of 2a. 
This unsymmetrically arranged edge deformation 301, oriented toward the 
upper band surface, in the preceding winding, according to FIGS. 7 and 10, 
forms the abutment for the forward edge deformation 2, oriented toward the 
lower band surface, of the following winding and brings about a 
point-shaped, formlocking, thrust-proof connection of neighboring windings 
against windup direction d. 
By adjusting the tool carrier wheel pair 4, 41 in the direction of arrows 
m, m', respectively, and by adjusting the tool carrier wheel pair 6, 61 in 
the direction of arrows e, e', one can change tool interval with respect 
to the tool carrier wheel pair 5, 51. 
For the practical accomplishment of the winding action it is not necessary 
to coordinate the opening and closing of tool carrier wheel pairs 4, 41 
and 5, 51 so accurately that successive windings, whose edge deformations 
2, 3 were produced alternatingly by the tool carrier wheel pairs 4, 41, 
and 5, 51 respectively, can be assembled, one above the other, without 
overlap. Instead, a minor overlap, i.e. a minor error in terms of winding 
length in the following winding, is permissible. 
According to FIG. 18, which illustrates an overall view of a coil tool 
opening system, the command for closing or opening the particular tool 
carrier wheel pair 4, 41, respectively, 5, 51, with the required 
differences in the transportation time of the band from tool carrier wheel 
pairs 5, 51 to tool carrier wheel pair 4, 41, respectively, for the 
performance of a short-time superposition of the rotary movement of tool 
carrier wheels 4, 41 in FIG. 11 by an angle .beta. , according to FIG. 12, 
is triggered by a signal tooth 19 rotating with the winch shaft 14, for 
example, in the form of a single tooth gear wheel. At every revolution, a 
countertooth-wheel 20 is turned by one tooth subdivision, as a result of 
which, for example, corresponding valves (not illustrated) in a hydraulic 
system are controlled for the activation of corresponding adjusting 
cylinders 15, 16 for the tool carrier wheel pairs 4, 41 and 5, 51. Another 
similar control involving rotation of the tooth wheel 29 in FIG. 12 is not 
completely illustrated in that figure. 
The superposition of the rotary movement of tool carrier wheels 4, 41 in 
FIG. 11 by an angle .beta. per revolution of the winch shaft 14 in FIG. 18 
can also take place continually during every revolution of the winch shaft 
14. 
For example, by means of a so-called electrical shaft, one can turn the 
shaft of a gear, not shown, synchronously with the winch shaft 14, and by 
means of a variable translation between the shaft of this gear and the 
shaft of tooth wheel 29 in FIG. 12, one can bring about any desired 
rotation angle .beta. which will grow continually with every revolution of 
the winch shaft 14 in FIG. 18. 
In order to get a form-locking thrust composite both in the windup 
direction and in the opposite direction, for a large band thickness range 
and every possible winding interval, it is necessary to make sure, in 
accordance with FIGS. 4 and 7, that there will be closest contact between 
edge deformations 3 or 301, and the abutting deformations which are 
oriented toward the lower band surface, in terms of neighboring windings. 
To make sure that neighboring windings will not be shoved in the windup 
direction, the following procedure is used according to FIG. 4: to 
transmit the forces F.sub.1, the tool carrier wheel pairs 4, 41 and 5, 51 
perform identical edge deformations 2, 3. The mutual interval between the 
tool carrier wheel pairs can be so changed by shifting the tool carrier 
wheel pair 4, 41 in the direction of arrows m, respectively, m', in FIGS. 
17, 18, during band movement in a continual manner, that, according to 
FIG. 4, a part of the particular edge deformations 2 of the oncoming band 
winding will be placed closely in front of the particular edge 
deformations 3 of the preceding band winding. This point-shaped, 
form-locking thrust composite is achieved very frequently through the 
combination of edge deformations 2 with 3, respectively, 301 with 2 from 
the first to the last band winding. In this process, sufficiently firmly 
wound-up band rings 22 develop on winch 14 for the reel-up and the 
subsequent unreeling process. 
In the case of coils, which are stored with a horizontal windup [reelup] 
axis, the thrust composite of neighboring windings, which acts in a 
force-locking manner due to the friction of the individual border 
deformations, is considerably enlarged opposite to the windup direction 
due to the border deformations which become effective in a point-shaped, 
force-locking manner. 
The edge deformations 201, which are scattered in between the border 
deformations to secure the windings against being shoved in the windup 
direction d as indicated in FIG. 10, are achieved through the pairing of 
the tool carrier wheel pairs 4, 41 with 6, 61, and the tool carrier wheel 
pairs 5, 51 and 6, 61 in the following manner: 
On the circumferences of the tool carrier wheel pairs 4, 41, respectively, 
5, 51, in FIG. 17, the matrices, respectively, upper dies, are recessed in 
some places, that is, those matrices and upper dies with which the edge 
deformations 3, oriented toward the upper band surface, are produced. In 
the area of these places, the tool carrier wheel pair 6, 61 produces an 
edge deformation 301 which is oriented toward the upper band surface and 
whose interval b from the edge deformation 2, oriented toward the lower 
band surface, is smaller than a, FIGS. 4 and 7. This shift in the edge 
deformation 301, as compared to the edge deformations 3, brings about the 
placement of corresponding edge deformations against their opposite 
flanks, as illustrated in FIG. 7. This combination of edge deformations of 
neighboring windings produces a form-locking thrust composite of forces 
F.sub.2 against the windup direction d of FIG. 10. As a result of a 
horizontal shift of tool carrier wheel pair 6, 61, in the arrow directions 
3, or e', in FIGS. 17 and 18, the intervals between tool carrier wheel 
pair 6, 61 and the tool carrier wheel pairs 4, 41 and 5, 51 and thus the 
position of the edge deformation 301 with respect to the edge deformation 
2, this is, the interval b, can continually be changed during band 
movement in such a fashion that the edge deformations 301 of the 
particular preceding winding and the edge deformations 2 of the oncoming 
winding will come to lie closely next to each other in the manner 
illustrated in FIG. 7. 
The change in the depth of the individual edge deformations 2, 3, 301 can 
be achieved by changing the axial intervals of the corresponding tool 
carrier wheels 4, 41; 5, 51; 6, 61 in the direction of arrows k, k'; g, 
g,'; f, f' in FIGS. 17 and 18, while tooth wheels 7, 71; 8, 81, 9, 91; 10, 
110; 11, 111; 12 121; 13, 131 take care of the necessary synchronization 
of the corresponding tool carrier wheels 4, 41; 5, 51; 6, 61 as well as 
the particular corresponding tool carrier wheel pairs 4, 41/6, 61; 5, 
51/6, 61. 
In order to be able to provide unbordered bands, having width fluctuations, 
with edge deformations in such a manner that their spacing from their band 
edges will not change, it is proposed that the axes of the tool carrier 
wheels be swung on both sides of the band independently of each other by a 
small angle in the band plane, so that the tool carrier wheels will be 
able to follow the width change of the band on both sides independently of 
each other without generation of a force which would arch or tighten the 
band in a lateral direction. 
According to FIG. 19, which is a side view of a coil 22, and FIG. 20, which 
shows a top view on FIG. 19, several possibilities are conceivable to 
cover or relieve the band winding moment M=Z.multidot.R, especially when 
the start of the band was placed around the winch shaft with the help of a 
belt winder without clamping in a winch clamping slip. 
The novel carrier bars 141 of the winch shaft 14 are shifted radially so 
far into the winding position (by way of adaptation to the band thickness) 
that the circumference of the median plane of the first winding, placed 
around by means of the belt winder, will as accurately as possible amount 
to a whole multiple of the subdivision interval t of the edge deformations 
2 which are to be oriented toward the winch shaft 14. In such instance, 
the carrier bars 141 are hooked up in a form-locking manner with the edge 
formation 2 of band 1 so that the circumferential force of winch shaft 14, 
corresponding to the band windup moment M.sub.o of the winch shaft 14, 
will with a great degree of certainty be brought into the first band 
winding via the edge deformations 2 in a form-locking arrangement. 
As the band ring diameter 2 R grows and as the band winding traction forces 
Z increase, the winch shaft moment M.sub.o can be relieved through band 
edge drive. By means of a driven, revolving tooth chain 52, whose 
subdivision of teeth 521 corresponds to the subdivision t of the 
corresponding band edge deformations 3, the drive moment 0.5 M.sub.2 is 
imparted to every winding of coil 22 at the band edge primarily in a 
form-locking arrangement between teeth 521 and the corresponding band edge 
deformations 3. The chain wheels 511 and 512 here (as the diameter of the 
coil 22 grows) change their position in such a way that the teeth 521 of 
the driven tooth chain 52 constantly remain in contact with the 
corresponding edge deformations 3 of band 1 in the coil 22. 
Another possibility for supporting the winch shaft moment M.sub.o is 
offered through a force-locking band edge drive via a friction wheel 50 
with cylindrical, conical, or spherical surface. The drive moment 0.5 
M.sub.1 is here imparted into the two band edge areas. 
By adjustment of the positions of friction wheels 50 to the growing 
diameter of coil 22, it is made certain that the wheels will always act 
within the most favorable outer composite sector. The band edge drives 
through tooth chain 52 with teeth 521 or through friction wheel 50 can be 
used simultaneously. 
FIG. 21 is a lateral cross-section and FIG. 22 is a longitudinal 
cross-section through a winch shaft 14 with opened coil 22. In the right 
half is shown the carrying bars 141, which carry the opened coil 22, in 
their spreadout position, whereas in the left half, these bars are shown 
in their retracted position. 
Carrying bars 141 are supported by several short and steep wedge-shaped 
surfaces 142. 
In order to prevent the first winding from slipping the axial direction, 
carrying bars 141 are provided with saw-tooth-like recesses 143 on their 
front side at least in the band width range. The actual carrying shaft 144 
of the winch 14 is a thick-wall pipe with central-symmetrical carrying 
properties. 
According to FIGS. 22 and 23, the carrying bars 141 are adjusted together 
by means of the axial shift of a winch front disc 145. 
FIG. 24 represents a partial cross-section through FIG. 23, with carrier 
bars 141 and their sawtooth-like recesses 143. 
Although certain specific embodiments of the invention have been shown and 
described, it is obvious that many modifications thereof are possible. The 
invention, therefore, is not intended to be restricted to the exact 
showing of the drawings and description thereof, but is considered to 
include reasonable and obvious equivalents.