JP4357056B2 - Ring rubber string manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to apparatus for producing annular elastic cord.
[0002]
[Prior art]
A ring-shaped rubber cord used for a cylindrical portion of various clothes such as underwear is generally made of a rubber band with a certain width and called a rubber band.
This coal rubber is obtained by putting a plurality of rubber yarns in a parallel state and covering them with a covering yarn such as human silk yarn. The rubber thread includes not only synthetic rubber but also elastic resin such as polyurethane. A width size of 4C to 10C (C is call), which is classified according to the number of rubber yarns used, is often used at present.
[0003]
In order to manufacture a ring-shaped rubber cord from such a call rubber, the call rubber is cut to a predetermined length, and both ends thereof are overlapped to form a ring, and both sides of the overlap region are individually sandwiched. The holding portion is separated in a relative reverse direction to hold the overlapping region in a tensioned state under a predetermined tension, and one position in the overlapping region is sewn with a sewing machine so as to penetrate the thickness direction. It was supposed to be worn (see Japanese Utility Model Publication No. 6-5158).
FIG. 12 shows the sewn portion of the ring-shaped rubber string obtained in this way. FIG. 13A is a hand movement diagram when forming this sewn portion, and FIG. 13B is an enlarged view of the seam.
[0004]
[Problems to be solved by the invention]
As shown in FIG. 10, in the case of coal rubber for manufacturing a ring-shaped rubber string, it is common to employ a rubber thread G that is a material for forming the rubber string that has a rectangular cross section (so-called square rubber). . However, as shown in FIG. 11, it is not impossible to employ a rubber rubber that uses a rubber thread g having a circular cross section (so-called round rubber).
However, when a ring-shaped rubber string is manufactured with a call rubber using a rubber thread g having a circular cross section as described above, it is called slip-in when tension is applied in the longitudinal direction (circumferential direction) of the ring-shaped rubber string. The rubber thread g may slip through the sewn portion. This is presumably because the rubber yarn g having a circular cross-sectional shape is more slippery than the rubber yarn G having a rectangular cross-sectional shape.
[0005]
That is, in a garment or the like using such a ring-shaped rubber string, there is a possibility that a state of running out of rubber may occur at a portion where the ring-shaped rubber string is attached.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an apparatus for manufacturing a ring-shaped rubber string that can prevent slipping of a rubber thread at a sewn portion called slip-in.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention takes the following measures.
That is, in the manufacturing method of the ring-shaped rubber string according to the present invention, first, the tip of the rubber string is overlapped with a predetermined length position of the rubber string to form a ring shape, and both sides of the overlapping region of the rubber string are individually clamped. At the same time, the both sandwiched portions are separated in the opposite direction to hold the overlapping region in a tensile state under a predetermined tension.
Then, after the first sewing that penetrates the thickness direction in the overlapping region, the overlapping region is moved along the longitudinal direction and the sewing that penetrates the thickness direction is repeated at least once, In addition, the tension state is released.
[0007]
By doing in this way, in the manufactured ring-shaped rubber string, at least two sewing parts are provided in the overlapping region. Therefore, even if a ring-shaped rubber string is manufactured using a rubber string using a rubber thread having a circular cross-sectional shape, slipping of the rubber thread at the sewn portion called slip-in is prevented in this manufactured ring-shaped rubber string. Is done.
Not only that, the sewn portion is formed in a state in which the region where the rubber string is overlapped is pulled. That is, since the sewing is performed in a state where the rubber thread used as a material for forming the rubber string is stretched and thinned, the sewing needle is prevented from damaging the thin rubber thread, and the rubber The durability of the yarn itself is enhanced.
[0008]
Moreover, after performing the sewing on the rubber thread thus thinned, if the tension on the overlapping region of the rubber string is released, the winding of the sewing thread around each rubber thread is strongly tightened, It is also strengthening as a sewing structure.
Further, the rubber string manufacturing apparatus according to the present invention includes a sewing machine, a rubber string supply means, a ring forming means, a cutting means, and a sewing assistance means.
Sewing is pierced with the needle as tying sewing suture across alternating rubber bands states from the widthwise central portion in the width direction end and the other end side superimposed in a penetrating manner in the thickness direction sewn It is something that can be done.
[0009]
The rubber string supply means is adapted to let the rubber string be fed out from the side toward the front area of the sewing machine.
The ring-shaped forming means rotates the clamp piece once so as to draw a ring shape in the vertical direction in the front area of the sewing machine while holding the tip of the rubber string fed by the rubber string supply means with the clamp piece. , whereby is obtained by the distal end of the elastic cord to the superimposed and wheel type and be so that a predetermined length position of the trailing portion of the elastic cord.
[0010]
The cutting means is a rubber in a state in which a predetermined length is drawn out by the rubber string supply means and the ring shape forming means to form a ring shape (that is, the length required for making the ring shape by the ring shape forming means). The string is cut.
The sewing assisting means is configured such that both sides of the overlapping region of the ring-shaped rubber string are clamped by the clamp pieces of the clamp portion in the thickness direction and moved to the sewing position of the sewing machine.
Of these, the sewing assistance means includes a pair of clamp parts for moving the clamp portions on both sides away from each other in a relative reverse direction so that the overlapping region of the rubber string held at the sewing position of the sewing machine can be pulled to both sides in the longitudinal direction . A tension applying means is provided, and the clamp portion and the tension are arranged so that the rubber string held under a predetermined tension by the tension applying means can be displaced with respect to the sewing position of the sewing machine along the longitudinal direction thereof. A lateral feed means for laterally feeding the applying means is provided.
[0011]
Moreover, in the ring-shaped rubber string according to the present invention, the two ends of the rubber string are formed in a state of being overlapped over a predetermined length region, and are pulled in the longitudinal direction of the rubber string with respect to the overlap region. Sewn portions formed by sewing in the thickness direction in a state of being in a state are provided at a plurality of locations in the longitudinal direction.
The rubber cord is particularly useful when a rubber rubber having a circular cross-section in parallel and made of a rubber rubber covered with a covering yarn around them.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an annular rubber string 1 according to the present invention.
This ring-shaped rubber string 1 is formed by overlapping both end portions of a rubber string 2 as a material over a predetermined length region W into a ring shape, and then in a plurality of locations in the overlap direction W in the longitudinal direction (two locations in the illustrated example). ) Is provided with a sewing portion 3.
Each of these sewing portions 3 is formed by sewing through the overlapping region W in the thickness direction while pulling the overlapping region W along the longitudinal direction of the rubber cord 2. It is a thing.
[0013]
FIG. 2 shows the sewn portion 3 in the ring-shaped rubber string thus obtained. FIG. 3A is a hand movement diagram in the case where the sewing portion 3 is formed, and FIG. 3B is a stitch diagram.
In this ring-shaped rubber string 1, the rubber string 2 used as a raw material is a rubber rubber in which a plurality of rubber threads G having a rectangular cross section are arranged in parallel as shown in FIG. In addition, since a plurality of sewing portions 3 are provided as described above, a plurality of rubber threads g having a circular cross-sectional shape as shown in FIG. Even in the case of coal rubber covered with covering yarn, no inconvenience occurs.
[0014]
FIG. 4 thru | or FIG. 9 has shown one Embodiment of the manufacturing apparatus 10 for manufacturing the above ring-shaped rubber strings 1. FIG.
As shown in FIG. 4, the manufacturing apparatus 10 includes a sewing machine 11, a rubber string supply unit 12, a ring shape forming unit 13, a cutting unit 14, and a sewing assistance unit 15.
The sewing machine 11 is configured so that the rubber string 2 in an overlapped state can be sewn in a penetrating manner in the thickness direction, and the sewing needle 19 is moved up and down with the needle hole 18 periphery on the plate 17 as a sewing position X. I am trying to make it.
[0015]
The rubber cord supply means 12 is configured to feed the rubber cord 2 from the side (left side in FIG. 4) toward the front area of the sewing machine 11, and from the stock case 20 of the rubber cord 2 through a guide 21. After the rubber string 2 is unwound by the unwinding roller device 22, the rubber string 2 is further inserted into the transverse feed table 26 through the dancer roller 23 and the guide rollers 24, 25, and provided on the transverse feed table 26. A fixed length feed roller 27 feeds a necessary length from the front end side (right side in FIG. 4) of the lateral feed table 26.
[0016]
As shown in FIG. 5, the lateral feed table 26 is provided with a rubber presser upper plate 28 that covers the upper surface of the rubber cord 2, thereby preventing the rubber cord 2 from being lifted or meandered. ing.
The dancer roller 23 has a structure in which the vertical movement range is automatically controlled between the upper limit sensor 30 and the lower limit sensor 31, and the amount of feed and tension of the rubber cord 2 with respect to the lateral feed table 26 are kept within a predetermined range. It has come to droop.
The transverse feed table 26 is provided with an anti-slip roller 33 that makes indirect contact with the fixed-size feed roller 26 to ensure the feeding of the rubber cord 2, various sensors 34 and 35 that detect the rubber cord 2, and the like. The rubber string 2 as the rubber string supply means 12 can be automatically supplied.
[0017]
The ring-shaped forming means 13 holds the tip of the rubber string 2 fed out by the rubber string supplying means 12 and draws a ring shape in the vertical direction in the front area of the sewing machine 11 with this held state. The rubber cord 2 is rotated once (refer to the one-dot chain line in FIG. 6), whereby the tip of the rubber cord 2 is positioned at a predetermined length in the rubber cord 2 (the portion fed from the lateral feed table 26 of the rubber cord supply means 12). It is made to overlap.
In this ring-shaped forming means 13, the front end portion of the rubber cord 2 is held in a state where the longitudinal direction is front-rear at the front position of the sewing machine 11 and projects in the radial direction with respect to the horizontal rotation shaft 40. This is a structure in which a clamp portion 41 is provided.
[0018]
The rotating shaft 40 performs an intermittent operation in which one rotation is one cycle via the winding transmission means 42 and the like. The clamp portion 41 has a pair of clamp pieces 41a and 41b that hold a predetermined interval in the vertical direction during standby, and these are close to and separated from each other as needed by a driving tool 43 such as a hydraulic cylinder. It has become.
The clamp portion 41 is provided with a support arm 45 on the side surface of the rubber cord supply means 12 facing the lateral feed table 26.
The support arm 45 scoops up the rubber string 2 that is made into a ring shape by one rotation of the clamp part 41 from the inside of the ring, and then the part of the scooped part when the clamp part 41 stops rotating. The rubber string 2 is held in a horizontal state, and at this time, the distance from the rubber string 2 fed from the side of the lateral feed table 26 of the rubber string supply means 12 is adjusted to the same height.
[0019]
The ring forming means 13 is attached with a rubber hooking guide 46 and a loosening prevention member 47 on the side opposite to the lateral feed table 26 of the rubber cord supplying means 12 (right side in FIG. 4). Yes.
The rubber hook guide 46 and the loosening prevention member 47 retain the shape so that the ring shape is not closed when the rubber cord 2 is formed into a ring shape by one rotation of the clamp portion 41 (the ring shape is not circular but reversed). To be triangular).
The rubber hanging guide 46 and the loosening prevention member 47 are both attached to the support post 48 via elevating platforms 46a and 47a that are held up and down by the support post 48.
[0020]
The rubber hooking guide 46 is raised and lowered by a fluid pressure cylinder (not shown) or the like, whereas the loosening prevention member 47 is raised by a fluid pressure cylinder (not shown). Although it is performed by the above, the descent is a natural fall due to its own load.
A sensor 49 for detecting the loosening prevention member 47 is provided at the lower limit position of the loosening prevention member 47. When the sensor 49 transmits a detection signal, an abnormal situation in which the rubber cord 2 is not present is assumed. It is intended to stop or notify.
[0021]
The rubber hook guide 46 has a disk-shaped portion where the rubber cord 2 is hooked, and can rotate around its central axis. The outer circumferential surface has a groove width for each width size of the rubber cord 2. Different guide grooves 46b are provided.
In the illustrated example, a total of four guide grooves 46b are provided at the outer peripheral positions every 90 ° in order to be adaptable to four types of widths 4C, 6C, 8C, and 10C as the width size of the rubber cord 2, and each guide groove 46b It was assumed that the rotation angle could be clicked and stopped so that was facing directly above.
[0022]
The rubber hook guide 46 does not necessarily need to be movable up and down.
The cutting means 14 cuts the rubber string 2 fed out by a predetermined length by the rubber string supply means 12 (that is, the rubber string 2 having a length necessary for making the ring shape by the ring shape forming means 13). And is provided at the tip (right side in FIG. 4) of the lateral feed table 26 of the rubber cord supply means 12.
In this cutting means 14, as shown in FIGS. 7 and 8, a lower blade 51 that is fixed via a bracket 50, and an upper blade 53 that is rotatably held by the bracket 50 via a support shaft 52. And a driving tool 55 such as a fluid pressure cylinder for transmitting driving in the pushing / pulling direction to a driving lever 54 attached to the support shaft 52 of the upper blade 53.
[0023]
A spring 56 is inserted into the support shaft 52 between the bracket 50 and the drive lever 54 so that the axial direction (left-right direction) positioning of the drive lever 54 with respect to the support shaft 52 can be adjusted. Thus, the degree of contact (that is, sharpness) of the upper blade 53 with respect to the lower blade 51 can be adjusted.
The sewing assistance means 15 sandwiches the both sides of the overlapping area W in the thickness direction with respect to the rubber string 2 that has been formed into a ring shape by the ring shape forming means 13, and the overlapping area W is 11 is moved to the sewing position X.
[0024]
As shown in FIG. 9, the sewing assistance means 15 includes a pair of left and right clamp portions 60 and a forward / backward moving device 62 such as a fluid pressure cylinder that enables the holding base 61 of both the clamp portions 60 to move back and forth. ing.
Each clamp part 60 has a pair of clamp pieces 60a and 60b that hold a predetermined interval in the vertical direction, and these are close to each other and separated by a driving tool 63 such as a fluid pressure cylinder as necessary. ing.
In addition, the sewing assistance means 15 is provided with a tension applying means 66 and a lateral feed means 67.
[0025]
The tension applying means 66 allows the overlapping region W of the rubber cord 2 to be moved to the sewing position X of the sewing machine 11 and subsequently to be pulled in the longitudinal direction both sides (left and right direction). Thus, it is provided as an attachment portion for the left and right clamp portions 60 with respect to the holding base 61.
Specifically, the left and right clamp portions 60 are separately supported via the separate left and right moving bases 71 and 72 on the guide rail 70 fixed on the holding base 61 with the longitudinal direction facing left and right. The left and right moving tables 71 and 72 are driven to move by separate driving tools 73 and 74 such as a fluid pressure cylinder.
[0026]
Accordingly, if both the driving tools 73 and 74 are driven in the contracting direction, the mutual distance between the two clamp parts 60 is widened. Conversely, if both the driving tools 73 and 74 are driven in the extending direction, the two clamping parts 60 are mutually connected. The interval becomes narrower.
In the example shown in the figure, the tension applying means 66 is separately provided for both the left and right clamp parts 60, but only one of them may be provided.
The lateral feed means 67 is capable of changing the position of the rubber cord 2 held under a predetermined tension by the tension applying means 66 at the sewing position X of the sewing machine 11 along the longitudinal direction thereof. The forward / backward moving / retracting device 62 itself can be moved left and right by a horizontal fluid pressure cylinder 77.
[0027]
On the other hand, as shown in FIG. 4, in the front portion of the sewing machine 11 and in the vicinity of the rotation center of the clamp portion 41 in the ring-shaped forming means 13, the ring shape after being formed into a ring shape (that is, after manufacture). A throw-in guide 80 for stacking the rubber string 1 is provided.
Next, the manufacturing method according to the present invention will be described based on the operating status of the manufacturing apparatus 10 configured as described above.
First, the rubber cord supply means 12 operates the unwinding roller device 22 and the constant-size feed roller 27 to feed the rubber cord 2 from the stock case 20 to the lateral feed table 26. The front end of the sewing machine 11 is somewhat protruded toward the front end side.
[0028]
Next, the ring-shaped forming means 13 holds the distal end portion of the rubber cord 2 protruding from the lateral feed table 26 by the clamp portion 41. And the clamp part 41 is rotated 1 time around the rotating shaft 40 with this holding state.
Therefore, as shown in FIG. 6, the rubber cord 2 is in a state of drawing a ring shape in the vertical direction in the front area of the sewing machine 11. Further, the tip end portion of the rubber cord 2 held by the clamp portion 41 is overlapped with a predetermined length on a portion where the rubber cord 2 is fed from the lateral feed table 26.
[0029]
Furthermore, at this time, the rubber cord 2 is scooped up from the inner side of the ring by the support arm 45 and the clamp portion 41 is rotated so as to pass above the rubber hooking guide 46 and below the loosening prevention member 47. Accordingly, when the rubber hooking guide 46 is raised and the loosening prevention member 47 is lowered, the ring shape (inverted triangular shape) of the rubber string 2 is maintained.
Next, the sewing assistance means 15 starts operating.
First, the forward / backward moving device 62 advances the left and right clamp portions 60 toward the clamp portion 41 of the ring-shaped forming means 13, so that the overlapping region (approximately from the support arm 45) of the rubber cord 2 held in the ring shape is obtained. These clamp portions 60 are inserted into both sides of the portion up to the clamp portion 41).
[0030]
Then, the left and right clamp portions 60 are operated to hold the rubber cord 2 in the thickness direction while being in an overlapped state. After this clamping, the clamp part 41 of the ring-shaped forming means 13 releases the rubber cord 2.
At this time, the cutting means 14 operates to cut the rubber cord 2 in accordance with the tip of the lateral feed table 26. Accordingly, the rubber string 2 is cut out by a predetermined length necessary for making the ring shape.
It should be noted that the positions where the left and right clamp portions 60 are clamped with respect to the overlapping region of the rubber string 2 are such that the end portions on both sides of the rubber string 2 and the left and right clamp portions 60 are not too close to each other. Approximately 10 mm is secured from the middle position between the left and right clamp parts 60.
[0031]
Then, the forward / backward moving device 62 pulls the left and right clamp portions 60 toward the sewing machine 11, and moves both clamping portions of the rubber strap 2 to the sewing position X of the sewing machine 11.
Next, the tension applying means 66 is actuated to separate the left and right clamp portions 60 in the opposite directions, thereby causing both sandwiched portions (that is, the overlapping region) of the rubber cord 2 to be under a predetermined tension (approximately 220% to approximately 220%). About 259% is preferable).
[0032]
Next, the sewing machine 11 starts to operate, and the first sewing is performed so as to penetrate a predetermined portion in the overlapping region of the rubber cord 2 in the thickness direction (see FIG. 3).
Next, the lateral feed means 67 is actuated, and at the sewing position X of the sewing machine 11, the overlapping region of the rubber cord 2 is displaced while being along the longitudinal direction thereof. At this time, the moving distance should not be too large (about 6 mm is sufficient).
The rubber cord 2 remains held under a predetermined tension by the tension applying means 66 during and after the operation of the lateral feed means 67.
[0033]
Then, after the operation of the lateral feed means 67, the sewing machine 11 starts operating again, and a second sewing is performed so as to penetrate a predetermined portion in the overlapping region of the rubber cord 2 in the thickness direction. (See FIG. 3).
In this manner, two sewing portions 3 (see FIGS. 1 and 2) are formed in the overlapping region of the rubber cord 2.
Thereafter, after the tension is released by the tension applying means 66, the clamp portions 60 are moved out of the sewing machine 11 by the forward / backward moving device 62, the both clamp portions 60 are released, etc. The ring-shaped rubber string 1 (after manufacturing) is stacked through a throwing guide 80.
[0034]
In the rubber ring 1 manufactured in this way, as shown in FIG. 1, the slip-in is not caused as described above because the two sewn portions 3 are provided in the overlapping region W. It is to be prevented.
Not only that, the sewing portion 3 is formed while being pulled in the overlapping region W of the rubber cord 2, so that the rubber thread (G and FIG. 10 in FIG. 10) is formed as a material for forming the rubber cord 2. 11 g) is stretched and thinned, and the sewing needle 19 is restrained from damaging the thin rubber thread, and the durability of the rubber thread itself is increased accordingly. It has become.
[0035]
Moreover, after the rubber thread thus thinned is sewed, the tension on the overlapping region W of the rubber string 2 is released, so that the winding of the sewing thread around each rubber thread is strongly tightened. Therefore, it is also strengthened as a sewing structure.
In addition, this invention is not limited to above-described embodiment, It can change suitably according to the aspect.
The present invention includes a case where a ring-shaped rubber string is manufactured from a rubber string using a rubber thread having a rectangular cross-sectional shape, and includes the ring-shaped rubber string manufactured in this way.
[0036]
The mechanism, driving tool, member shape, and the like of each part employed as the manufacturing apparatus 10 can be replaced with conventionally known appropriate ones.
[0037]
【The invention's effect】
As is apparent from the above description, the ring-shaped rubber string manufacturing method and apparatus according to the present invention can manufacture a ring-shaped rubber having at least two sewn portions in the overlapping region. Since the ring-shaped rubber string manufactured in this way has at least two sewn portions in the overlapping region, even if a rubber thread having a circular cross section is used. The slipping of the rubber thread at the sewn part called slip-in is prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view of a ring-shaped string according to the present invention.
FIG. 2 is an enlarged perspective view showing a sewn portion of a ring-shaped string according to the present invention.
3A is a hand movement diagram in the case of forming the sewn portion shown in FIG. 2, and FIG. 3B is a stitch diagram.
FIG. 4 is a perspective view showing a ring-shaped string manufacturing apparatus according to the present invention.
FIG. 5 is a plan view showing a lateral feed table of the rubber string supply means.
FIG. 6 is a trajectory diagram showing the operation status of the ring-shaped forming means.
FIG. 7 is a perspective view showing cutting means.
FIG. 8 is a front view showing a main part of the cutting means.
FIG. 9 is a perspective view showing sewing assistance means.
FIG. 10 is a cross-sectional perspective view showing a call rubber (rubber string) using a rubber thread having a rectangular cross-sectional shape.
FIG. 11 is a cross-sectional perspective view showing a call rubber (rubber string) using a rubber thread having a circular cross-sectional shape.
FIG. 12 is an enlarged perspective view showing a sewn portion in a conventional ring-shaped rubber cord.
13A is a hand movement diagram when forming the sewn portion shown in FIG. 12, and FIG. 13B is a stitch diagram.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Ring-shaped rubber string 2 Rubber string 10 Manufacturing apparatus.
DESCRIPTION OF SYMBOLS 11 Sewing machine 12 Rubber string supply means 13 Ring-shaped formation means 14 Cutting means 15 Sewing assistance means 66 Tension applying means 67 Transverse feed means g Rubber thread having a circular cross section W Overlapping region X Sewing position

Claims (1)

The sewing needle (19) is pierced in a penetrating manner in the thickness direction so that the overlapped rubber string (2) is alternately sewed with a sewing thread from the center in the width direction to one end and the other end in the width direction. Sewing machine (11) that enables sewing,
Rubber string supply means (12) for feeding the rubber string (2) from the side toward the front area of the sewing machine (11);
Clamp so as to draw a ring shape in the vertical direction in the front area of the sewing machine (11) while holding the tip of the rubber cord (2) fed out by the rubber cord supply means (12) by the clamp pieces (41a) (41b) The ring-shaped forming means (13) which rotates the pieces (41a) and (41b) once and overlaps the tip of the rubber string (2) with a predetermined length position of the subsequent part of the rubber string (2) to form a ring shape. )When,
A cutting means (14) for cutting the rubber string (2) in a state where the rubber string supply means (12) and the ring shape forming means (13) are fed out by a predetermined length to form a ring shape;
The both sides of the overlapping region (W) of the rubber cord (2) formed into a ring shape are sandwiched in the thickness direction by the clamp pieces (60a, 60b) (60a, 60b) of the clamp portions (60), (60), respectively. Sewing aid (15) for moving the sewing machine (11) to the sewing position (X),
The above-mentioned sewing assistance means (15) includes an overlap region (W) of the rubber cord (2) held at the sewing position (X) of the sewing machine (11) so that it can be pulled to both sides in the longitudinal direction. A pair of tension applying means (66) and (66) for moving the clamp portions (60) and (60) away from each other in a relative reverse direction, and a rubber string held under a predetermined tension by the tension applying means (66) and (66) ( 2) The clamps (60) (60) and the tension applying means (66) (66) are placed sideways so that the sewing position (X) of the sewing machine (11) can be changed along the longitudinal direction. An apparatus for producing a ring-shaped rubber string, characterized in that a transverse feed means (67) for feeding is provided.

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