TWI519249B - Zipper with the chain of the grinding device and zipper with the ring - Google Patents

Description

Sprocket grinding device for zipper and sprocket for zipper

The present invention relates to a sprocket grinding device for zippers and a zipper fastener for grinding the zipper, the zipper having a zipper tape and a zipper tape having a front and a back attached to the zipper tape, the zipper chain The tooth grinding device is for grinding the front or back surface of the above-mentioned fastener element in the above zipper.

In the manufacture of a zipper, it is usually necessary to grind the front or back surface of the fastener element attached to the zipper tape by means of a grinding device. As such a polishing apparatus, Patent Document 1 discloses a polishing apparatus including a polishing portion having a rotating shaft and a disc-shaped grinding member (grinding wheel 34) fixed to the front end of the rotating shaft by a rotating shaft The grinding member (grinding wheel 34) is brought into contact with the surface of the fastener element to rotate.

Patent Document 1: Chinese Patent No. 101461589

In Patent Document 1, as shown in Fig. 17, the rotating shaft extends in a direction parallel to the front or the back of the zipper. Thereby, when the polishing member rotates, the peripheral portion (curved surface) of the grinding wheel as the polishing member comes into contact with the front or back surface of the fastener element. That is, when the polishing member grinds the fastener element, the polishing member approaches or leaves with a curved trajectory with respect to the surface of the fastener element.

Movement of the abrasive member in the trajectory of the above curve may cause a problem in that the quality of the product after polishing is lowered. Specifically, when the polishing member moves on the above trajectory, the surface of the fastener element is polished into a curved shape. As a result, excessive sharp edges are formed on the surface of the fastener element, and the touch of the skin is deteriorated. Moreover, when the slider is moved, the above edge will be hooked On the slider, the slider cannot move smoothly on the zipper. Further, since the surface of the fastener element is excessively ground, the strength of the fastener element is lowered.

The present invention has been made in view of the above circumstances, and an object of the invention is to provide a polishing device for a fastener element for a fastener which can be polished with high efficiency without deteriorating the quality of the product after polishing.

In order to achieve the above object, the present invention is constituted as follows.

A sprocket grinding device for a zipper according to a first aspect of the present invention is a sprocket splicing device, wherein the zipper includes a zipper tape and a zipper element having a front and a back surface mounted on the zipper tape, A sprocket grinding device for polishing the fastener element in the zipper, comprising: the zipper transport path; and a support portion disposed along the transport path to support the zipper The posture of the fastener element is disposed to face one of the back surface and the front surface of the fastener element; and the polishing unit is disposed to face the support portion via the transport path; the polishing unit has: a rotating shaft; and an abrasive member fixed to the rotating shaft and rotatable by the rotating shaft; wherein the polishing member is in contact with the other of the front surface and the back surface of the fastener element, thereby aligning the fastener element Polishing the front surface or the back surface, wherein the rotating shaft of the polishing member extends in parallel with a direction perpendicular to the support portion

According to a second aspect of the present invention, in the sprocket polishing device according to the first aspect of the invention, the polishing portion has a fixing portion fixed to the rotating shaft and perpendicular to an axial direction of the rotating shaft. The plate body extending in the direction, the polishing member is fixed to the plate body.

According to a third aspect of the present invention, in the sprocket polishing device according to the second aspect of the invention, the polishing portion has a projection protruding from the plate body, and the polishing member is attached to a front end of the protrusion. .

According to a fourth aspect of the present invention, in the sprocket grinding device for a zipper, the plate system extends from a center of the rotating shaft in a radial direction of the rotating shaft, except for the configuration described in the second or third aspect. In the circular plate, a plurality of the polishing members are disposed at a predetermined interval along a peripheral edge portion of the plate body.

According to a fifth aspect of the present invention, in a sprocket polishing device for a zipper, the plate system extends from a center of the rotating shaft in a radial direction of the rotating shaft, except for the configuration described in the second or third aspect. In the rectangular plate, one end of the plate body is fixed to the rotating shaft, and the polishing member is disposed at the other end of the plate body.

According to a sixth aspect of the invention, in the sprocket polishing device for a fastener according to the first aspect of the invention, the polishing member is made of diamond.

According to a seventh aspect of the present invention, in a sprocket polishing device for a zipper, the zipper has a pair of the fastener tapes and a relative edge of the fastener tape attached to the zipper tape. In the above-mentioned fastener element, the support portion supports the fastener element in the meshing state.

According to a third aspect of the present invention, in the sprocket polishing device for a fastener according to the first aspect of the invention, the support portion has a support that is in contact with any one of a back surface and a front surface of the fastener element. surface.

According to a ninth aspect of the present invention, in the sprocket polishing device according to the eighth aspect of the invention, the support portion includes a guide groove for guiding movement of the fastener element, and the guide groove The bottom surface is the above support surface.

According to a tenth aspect of the present invention, in the sprocket polishing device according to the first aspect of the invention, the support portion is a roller, and the roller has a width orthogonal to the rotation axis of the polishing portion. A rotating shaft extending in the direction and rotatable about the rotating shaft.

According to a eleventh aspect of the present invention, in the sprocket grinding device for a zipper, the support portion includes the first surface, in addition to the configuration described in the first aspect, a first member and a second member having a second surface, wherein the first member and the second member are disposed to face each other via a transport path, and the fastener tape can be provided between the first member and the second member When the fastener tape passes through the gap, the first surface faces the back surface of the fastener tape, and the second surface faces the front surface of the fastener tape.

According to a twelfth aspect of the present invention, in the sprocket polishing device of the present invention, the support portion includes a first roller and a second roller, and the first roller is in the transport path. It is disposed on the upstream side as compared with the second roller described above.

According to a thirteenth aspect of the present invention, in the sprocket polishing device of the zipper according to the twelfth aspect, the support portion has the first support for supporting the fastener element in the first posture. a support surface and a second support surface for supporting the fastener element in a second posture, the first support surface is inclined toward a direction close to the polishing member, and the second support surface is flat, the fastener element has The base end portion connected to the edge portion of the fastener tape and the front end portion away from the edge portion, the first support surface displaces the front end portion of the fastener element toward the polishing member.

According to a fourteenth aspect of the present invention, in the sprocket polishing device of the zipper according to the thirteenth aspect, the first support surface is formed on the first roller, and the second support is The face is formed on the second roller described above.

According to a fifteenth aspect of the present invention, in the sprocket polishing device according to the first aspect of the invention, the polishing apparatus further includes: a zipper transfer unit that is in the transport path and the support The tension portion is disposed on the downstream side of the tension providing portion, and is disposed on the upstream side of the support portion in the transport path, and applies tension to the slide fastener.

A sprocket for a zipper according to a sixteenth aspect of the present invention, which is characterized in that the sprocket for a zipper according to any one of the first to fifteenth aspects of the present invention is ground.

According to the above configuration, the following effects can be achieved.

According to the first aspect of the present invention, since the rotating shaft of the grinding member extends in parallel with the direction perpendicular to the supporting portion, and the grinding member is ground in contact with the front or back surface of the fastener element, the grinding member is in the pair of fastener chains. The teeth can be approached or separated in a straight line with respect to the surface of the fastener elements when grinding. Thereby, the surface of the fastener element is not ground into a curved shape. Therefore, the quality of the product after grinding does not decrease.

According to the second aspect of the present invention, since the polishing portion has a plate body fixed to the rotation shaft and extending in a direction orthogonal to the rotation axis axis direction, and the polishing member is fixed to the plate body, the grinding can be performed The components are easily mounted relative to the drive shaft.

According to the third aspect of the present invention, since the polishing member is attached to the front end of the projection, it is possible to arrange the polishing member for polishing the minimum of the fastener element. Therefore, the manufacturing cost of the zipper can be reduced.

According to the fourth aspect of the present invention, since a plurality of polishing members are disposed on the circular plate, the fastener elements can be polished with high efficiency.

According to the fifth aspect of the present invention, since the plate body can also be a rectangular plate, the degree of freedom in designing the polishing portion is improved.

According to the sixth aspect of the present invention, since the polishing member is made of diamond and is made of a high-hardness material, the fastener element can be surely polished.

According to the seventh aspect of the present invention, since the support portion supports the fastener element in the engaged state, the fastener element in the engaged state can be simultaneously polished. Therefore, the polishing can be performed with high efficiency.

According to the eighth aspect of the present invention, since the support portion has a support surface that is in contact with the back surface or the front surface of the fastener element, when the fastener element is in contact with the polishing member, even if the fastener element is pressed by the polishing member, Moving to the opposite side of the grinding member, the posture of the fastener element is not disturbed due to the support from the support surface.

According to the ninth aspect of the present invention, since the support portion has a fastener element for the zipper The guide groove is moved to guide, and the bottom surface of the guide groove is a support surface. Therefore, when the fastener element is in contact with the polishing member, even if the fastener element is towed by the polishing member, it is intended to move together with the polishing member in the rotation direction of the polishing member. Due to the limitation of the guiding groove, the posture of the zipper teeth is not disordered.

According to the tenth aspect of the present invention, since the support portion is a rotatable roller, the chain can be quickly conveyed. Further, the zipper is tensioned by being wound around the roller, thereby having a stable posture. Therefore, the posture of the zipper is not disturbed during polishing.

According to the eleventh technical solution of the present invention, since the support portion includes the first member and the second member, and there is a gap between the first member and the second member through which the zipper tape can pass, when the zipper tape passes through the gap The first surface of the first member is opposite to the back surface of the zipper tape, and the second surface of the second member is opposite to the front surface of the zipper tape, so that the zipper tape can be protected so that the polishing member does not zip with the zipper cloth With contact. This will not cause damage to the zipper tape.

According to the twelfth aspect of the present invention, since the support portion has the two rollers disposed in the front and rear of the conveyance path, the polishing member can polish the fastener elements at two positions of the support portion. Thereby, the polishing can be performed with high efficiency.

According to the thirteenth aspect of the present invention, since the support portion has the first support surface and the second support surface, the second support surface is flat, and the first support surface displaces the front end portion of the fastener element toward the grinding member. Therefore, in addition to polishing the entire surface of the fastener element, the polishing apparatus can polish only the surface on the front end side of the fastener element. Since the zipper teeth are bent in such a manner that the front end side is tapered, there is a possibility that the zipper teeth are not ground in the grinding of the entire surface. According to the configuration of the present invention, the tip end portion can be surely polished by changing the posture of the distal end portion.

According to the fourteenth aspect of the present invention, since the first support surface is formed on the first roller and the second support surface is formed on the second roller, the configuration can be realized with a simple configuration. It is possible to polish not only the entire surface of the fastener element but also the surface of the front end side of the fastener element.

According to the fifteenth aspect of the present invention, the polishing apparatus further includes a zipper transfer portion and a tension applying portion that applies tension to the zipper, so that tension can be easily applied to zip the zipper when the polishing device transports the zipper to the support portion. The posture is not disordered.

According to the above, it is possible to provide a polishing device for a fastener element for a fastener which can be polished with high efficiency without deteriorating the quality of the product after polishing.

1, 101‧‧‧ grinding device

2, 2a, 2b‧‧‧ grinding department

3, 3a, 13‧‧ ‧ support

4‧‧‧Tensation Department

5‧‧‧Transportation Department

6‧‧‧ pillar

7‧‧‧ pedestal

8‧‧‧Frame

21‧‧‧Motor

22‧‧‧Rotary axis

23, 23a‧‧‧ board

24, 24a‧‧ ‧ prominence

25, 25b‧‧‧Abrased components

26‧‧‧ holes

27‧‧‧fasteners

31‧‧‧Support roller (first member)

31a‧‧‧Support plate (first component)

32‧‧‧Support roller rotation axis

33, 33a, 133, 138‧‧‧ second component

34, 134, 139‧‧‧ guide slots

41‧‧‧Pushing roller

42‧‧‧Pushing roller

43‧‧‧ Arm

44, 144, 145‧‧‧ guide rolls

45‧‧‧Tensile roller

46, 47‧‧‧ guide rolls

51‧‧‧Transport roller

52‧‧‧Transport roller

53‧‧‧ Arm

54‧‧‧Pushing roller

131‧‧‧First support roller (first member)

132‧‧‧Second support roller (first member)

134a‧‧‧second support surface

139a‧‧‧First support surface

E‧‧‧zipper teeth

Ea‧‧‧ base end

Eb‧‧‧ front end

S‧‧‧ zipper

T‧‧‧ zipper tape

Fig. 1 is a front schematic view showing a polishing apparatus according to a first embodiment of the present invention.

Fig. 2 is an enlarged perspective view showing a main portion of a polishing portion in the polishing apparatus of the first embodiment.

Fig. 3 is a cross-sectional view showing main parts of a polishing portion and a support portion in the polishing apparatus of the first embodiment.

Fig. 4 is an enlarged cross-sectional view showing a polishing portion, a support portion, and a main portion of the polishing apparatus of the first embodiment.

Fig. 5 is a cross-sectional view showing a main part of a zipper and a support portion of a first modification of the polishing apparatus of the first embodiment.

Fig. 6 is a perspective view showing a main part of a polishing unit according to a second modification of the polishing apparatus of the first embodiment.

Fig. 7 is a perspective view showing a main part of a polishing unit according to a third modification of the polishing apparatus of the first embodiment.

Fig. 8 is a front elevational view showing the main part of the tension applying portion of the fourth modification of the polishing apparatus of the first embodiment.

Fig. 9 is a front elevational view showing the main part of a support portion of a modification 5 of the polishing apparatus of the first embodiment.

Fig. 10 is a cross-sectional view showing the main part of the support portion shown in Fig. 9 in a fifth modification of the polishing apparatus.

Fig. 11 is a front view showing a modification 6 of the polishing apparatus of the first embodiment.

Figure 12 is a front schematic view showing a polishing apparatus according to a second embodiment of the present invention.

Fig. 13 is an enlarged cross-sectional view showing main parts of a polishing portion and a support portion (first support roller) in the polishing apparatus of the second embodiment.

Fig. 14 is an enlarged cross-sectional view showing main parts of a polishing portion and a supporting portion (second supporting roller) in the polishing apparatus of the second embodiment.

Fig. 15 (a) is an enlarged view of the polished surface of the zipper before polishing by the polishing apparatus of the present invention, and (b) is an enlarged view of the polished surface of the zipper after being polished by the polishing apparatus of the present invention.

Fig. 16 (a) is an enlarged photograph of the polished surface of the zipper before polishing by the polishing apparatus of the present invention, and (b) is an enlarged photograph of the polished surface of the zipper after being polished by the polishing apparatus of the present invention.

Figure 17 is a perspective view of a prior art grinding apparatus.

Hereinafter, an embodiment of a polishing device for a fastener element for a fastener according to the present invention will be described in detail with reference to the drawings. Hereinafter, unless otherwise specified, the "upstream side" refers to the upstream side of the zipper transfer direction, and the "downstream side" refers to the downstream side of the zipper transport direction.

(First Embodiment)

Fig. 1 is a front schematic view showing a polishing apparatus according to a first embodiment of the present invention. As shown in FIG. 1, the polishing apparatus 1 has a polishing section 2 for polishing the fastener element E of the zipper S in the transport path of the zipper S, and a support section 3 for supporting the fastener element E when the fastener element E is ground. The conveying unit 5 that conveys the zipper S toward the support unit 3 and the tension applying unit 4 that applies tension to the zipper S that is conveyed toward the support unit 3 without slackening.

The polishing portion 2 is fixed to the pillar 6 which protrudes upward from the upper surface of the pedestal 7 and has There is a motor 21, a rotating shaft 22 connected to the motor 21, and a plate body 23 fixed to the front end of the rotating shaft 22. The motor 21 of the polishing unit 2 is fixed to the above-described pillar 6. The rotating shaft 22 of the polishing unit 2 is located on the output end side of the motor 21 and is in a posture extending downward (vertical direction). The rotary shaft 22 is rotated by the motor 21 being driven. The plate body 23 rotates in the horizontal plane together with the rotating shaft 22 due to the rotation of the rotating shaft 22. A polishing member 25 to be described later is fixed to the plate body 23.

A frame 8 is fixed to the upper surface of the pedestal 7, and the support portion 3, the conveying portion 5, and the tension applying portion 4 are attached to the frame 8. The tension applying unit 4 is disposed on the most upstream side of the transport path. The conveying unit 5 is disposed on the most downstream side of the conveying path. Thereby, the support portion 3 is disposed between the tension applying portion 4 and the conveying portion 5 in the transport path. Moreover, the polishing unit 2 and the support unit 3 are arranged to face each other in the vertical direction with the conveyance path interposed therebetween. Furthermore, the upper and lower directions of the polishing device coincide with the front and back directions of the zipper.

The support portion 3 has a support roller 31. The support roller 31 is supported on the frame 8 by the support roller rotating shaft 32, and is rotated about the support roller rotating shaft 32. The support roller rotation shaft 32 of the support portion 3 is in a posture extending in a direction (horizontal direction) orthogonal to the rotation axis 22 of the polishing portion 2 (that is, the rotation axis of the polishing member). A zipper S is wound around the circumferential surface of the support roller 31. In the embodiment shown in FIG. 1, the support roller 31 rotates clockwise around the support roller rotation axis 32. In addition, the rotation direction of the support roller 31 is not limited to the clockwise direction, and can be arbitrarily set according to the configuration as long as the direction in which the slide fastener moves to the downstream side of the conveyance path.

The conveyance unit 5 includes a conveyance roller shaft 52 supported by the frame 8, a conveyance roller 51 that rotates around the conveyance roller shaft 52, and a pressing roller 54 that presses the slide fastener S toward the conveyance roller 51. The conveyance roller shaft 52 is connected to a motor (not shown). When the motor is driven, the conveyance roller 51 rotates around the conveyance roller shaft 52, and the slide fastener S is conveyed toward the downstream side of the conveyance path. Regarding the transport speed of the zipper, it is only necessary to ensure that all of the fastener elements E can be polished by the polishing member 25 in accordance with the rotational speed of the polishing member 25, for example, when the rotational speed of the polishing member is 5,000 to 10,000 rpm. The zipper transfer speed is 2.5~5.0m/min.

The pressing roller 54 is pushed by the arm 53 in the direction of moving toward the conveying roller 51. Further, the pressing roller 54 may be pushed in the direction in which the conveying roller 51 is moved by an energizing member such as a spring.

In the conveyance path, a guide roller 44 for guiding the conveyance of the slide fastener S is disposed between the support portion 3 and the conveyance portion 5. The guide roller 44 is disposed below the uppermost portion of the support roller 31 of the support portion 3. Therefore, the zipper S is conveyed downward toward the guide roller 44 along the circumferential surface of the support roller 31 after passing through the uppermost portion of the support roller 31 of the support portion 3. Thereby, the zipper S is prevented from floating upward between the support portion 3 and the conveying portion 5, so that the posture of the zipper S is not disturbed. That is, the zipper S is prevented from moving in a direction away from the support portion 3, thereby stabilizing the posture of the fastener element E to be ground.

The tension applying portion 4 has a shaft supported on the frame 8, a pressing receiving roller 41 that rotates around the shaft, and a pressing roller 42 that presses the slide fastener S against the pressing receiving roller 41. The pressing receiving roller 41 of the tension applying portion 4 is freely rotatable about the axis by the frictional force generated by the contact with the zipper S. The urging roller 42 is pushed by the arm 43 in the direction in which the pressing urging roller 41 moves. Further, the pressing roller 42 may be urged in a direction in which the pressing roller 41 is moved by an energizing member such as a spring. The tension applying unit 4 applies tension to the slide fastener S conveyed by the conveying unit 5, and the tension acts in the opposite direction to the conveying direction, whereby the zipper S is always tensioned. Therefore, when the zipper S is wound around the support roller 31, the zipper S can be in close contact with the circumferential surface of the support roller 31 without any slack (the gap between the zipper S and the peripheral surface of the support roller 31 does not occur).

Hereinafter, the polishing portion in the polishing apparatus of the first embodiment will be described with reference to Fig. 2 . Fig. 2 is an enlarged perspective view showing a main part of the polishing unit.

As shown in FIG. 2, the polishing portion 2 has a plate body 23 that is fixed to the front end of the rotating shaft 22 and that is rotatable together with the rotating shaft 22. The plate body 23 is a circular plate that extends in the radial direction around the rotating shaft 22. A projection 24 is fixed to a peripheral portion of the plate body 23. The projection 24 protrudes downward from the lower surface of the plate body 23. An abrasive member 25 for grinding the fastener element E is fixed to the front end of the projection 24. The fixing of the grinding member 25 can be achieved by any of the previous methods Now, for example, it can be carried out by means of an adhesive based. The abrasive member is made of diamond.

The projection 24 is fixed relative to the plate body 23 by a fastener (screw) 27. That is, the projection 24 is detachable from the plate body 23. Thereby, the abrasive member 25 can be detached from the plate body 23 along with the projections 24 by loosening the fasteners 27 when the polishing member 25 needs to be replaced. In this way, the replacement of the abrasive member as the wear product can be carried out in a simple manner. Further, the hole 26 shown in FIG. 2 is a hole through which the fastener 27 passes, and the protrusion 24 is fixed to the plate body 23 by the fastener 27 passing through the hole 26 and being fastened to the plate body 23.

The rotating shaft 22 is preferably rotated at a speed of 5000 rpm or more, for example, at 5,000 rpm to 10000 rpm. The polishing unit 2 has a plurality of (two in the present embodiment) polishing members 25. That is, a plurality of (two) protrusions 24 are fixed to the plate body. Further, an abrasive member 25 is fixed to the front end of each of the projections 24. Each of the projections 24 is disposed at a predetermined interval in the circumferential direction of the plate body. In consideration of the balance at the time of rotation, in the illustrated example, they are arranged at an angular interval of 180 degrees. The number of the projections 24 and the polishing members 25 is not limited to two, and three or three of the projections 24 may be disposed at an angular interval of 120 degrees, or four of them may be disposed at an angular interval of 90 degrees.

Hereinafter, the support portion in the polishing apparatus of the first embodiment will be described with reference to Figs. 3 and 4 . 3 is a cross-sectional view of a main portion of a polishing portion and a support portion in the polishing apparatus of the first embodiment, and FIG. 4 is an enlarged cross-sectional view showing a main portion of the polishing portion and the support portion shown in FIG.

Referring to Fig. 3, the axis of the rotating shaft 22 of the polishing member 25 extends in parallel with the direction (orthogonal direction) perpendicular to the axis of the rotation axis of the support roller 31 of the support portion 3. In other words, the rotating shaft 22 of the polishing member 25 extends in parallel with the direction perpendicular to the front surface (upper surface) of the fastener element E that the polishing member 25 is in contact with. When the polishing member 25 rotates together with the rotating shaft 22, the polishing member 25 is in a direction parallel to the front surface (upper surface) of the fastener element E (horizontal direction) as shown by an imaginary line (two-dot chain line) in FIG. Move on. Here, an example in which the rotating shaft 22 of the polishing member 25 is directly connected to the motor 21 will be described, but the zipper chain in which the rotating shaft of the polishing member is in contact with the polishing member is configured. The front side or the back side of the tooth E extends in a vertical direction, and the rotating shaft of the grinding member may not be directly connected to the motor. In this case, a mechanism for transmitting the rotational driving force from the motor to the rotating shaft is disposed between the drive shaft of the motor and the rotating shaft of the grinding member.

Further, the polishing surface of the polishing member 25 is preferably a flat polished surface, but may be a curved surface. When the polishing member 25 is moved, the front surface to be polished of the fastener element can be polished flat as long as it moves in a direction parallel to the front surface of the fastener element to be polished.

As shown in FIGS. 3 and 4, the support portion 3 includes a first member 31 composed of the above-described support roller 31, and a second member 33 made of a plate material disposed to face the circumferential surface of the support roller 31. Further, between the first member 31 and the second member 33, there is a gap through which the fastener tape T of the zipper S can pass. When the fastener tape T passes the gap, the first member 31 (the first face of the first member) opposes the back surface of the fastener tape T. Further, the second member 33 (the second surface of the second member) faces the front surface of the fastener tape T. The second member 33 covers the front side of the fastener tape T from the radially outer side of the support roller 31.

A guide groove 34 is formed on a circumferential surface of the support roller 31 (first member), and the guide groove 34 extends in the circumferential direction of the support roller 31, and the zipper element E is attached while accommodating the fastener element E Move to boot. The support roller 31 has a right side portion and a left side portion via the guide groove 34. The second member 33 has a right portion opposite to the right side portion of the support roller 31 and a left portion opposite to the left side portion of the support roller 31. Between the right portion and the left portion of the second member 33 there is a gap through which the fastener elements E can pass. When the fastener element E passes, the guide groove 34 accommodates and guides the fastener element E in the engaged state. At this time, the fastener element E is in contact with the support surface 34a which is the bottom surface of the guide groove 34.

Thereby, when the fastener element E comes into contact with the grinding member 25, the support surface 34a receives the thrust from the perpendicular direction of the grinding member 25. Therefore, at the time of polishing, the posture of the fastener element E is not displaced (moving in the direction away from the polishing member 25). Further, both side walls of the guide groove 34 receive the thrust from the horizontal direction of the polishing member 25 (the force to be towed by the polishing member 25) when the polishing member 25 contacts the fastener element E. Therefore, when grinding, the posture of the fastener element E is prevented. The potential displacement (along the circumferential surface of the first member 31).

Further, the fastener element E has a front side portion disposed on the front side of the fastener tape T and a back side portion disposed on the back side of the fastener tape T. When the front surface of the fastener element E is ground, the back side portion (the front side portion when the back surface of the fastener element E is polished) is housed in the guide groove 34, and the front side portion of the fastener element E is from the right side of the second member 33. The part is exposed between the left part. Therefore, the front side portion of the fastener element E faces the polishing member 25 of the polishing portion 2 and is in contact with the polishing member 25. On the other hand, the front surface of the fastener tape T is covered by the second member 33, so that it does not interfere with the polishing member. 25 contacts. Therefore, damage due to contact with the polishing member 25 does not occur on the fastener tape T. Further, the support roller rotating shaft 32 of the first member (support roller) 31 is supported by the frame 8 disposed on the right and left sides of the support roller 31. Moreover, as shown in FIG. 3, the second member 33 is also supported by the frame 8.

Although the polishing apparatus according to the first embodiment of the present invention has been described above, various parts of the polishing apparatus can be variously modified as long as they can realize their functions. Several variations are listed below. The description of the modifications will be mainly described with respect to the first embodiment, and the same reference numerals will be given to the same members, and the description thereof will be omitted.

Fig. 5 is a cross-sectional view showing a modification of the polishing apparatus of the first embodiment, showing a main portion of the zipper and the support portion. As shown in Fig. 5, the zipper T includes an unengaged single-side fastener element T and a zipper tape. T. The guide groove 34 formed on the first member (support roller) 31 has a width capable of accommodating the one-side fastener element E. Thereby, only one side of the fastener element E is polished by the polishing member 25.

The first member 31 has a right side portion and a left side portion across the guide groove 34. The second member 33 is disposed opposite to the left side portion of the first member 31. Between the left side portion of the first member 31 and the second member 33, there is a gap through which the fastener tape T can pass. Here, the second member 33 is disposed to face the left side portion of the first member 31 so as to form a gap for passing the zipper tape on the left side, but of course, may be disposed opposite to the right side portion of the first member 31, Thereby, a gap for passing the zipper tape is formed on the right side.

Fig. 6 is a perspective view showing a main part of a modification of the polishing apparatus according to a second modification of the polishing apparatus of the first embodiment. In the first embodiment described above, the plate body 23 is formed of a circular plate, but may not be a circular plate. As shown in Fig. 6, in the polishing portion 2a of the present modification, the plate body 23a is a rectangular plate. A rotating shaft 22 is fixed to one end side of the plate body 23a. A projection 24a is integrally formed on the other end side of the plate body 23a. This projection 24a cannot be detached with respect to the plate body 23a. The polishing member 25 is fixed to the front end of the projection 24a in the same manner as in the first embodiment described above. In this case, the polishing member 25 is rotated together with the rotating shaft 22 by the plate body 23a to grind the fastener element E. Furthermore, there may be no protrusions 24a. In this case, an abrasive member (e.g., sandpaper) 25 is directly fixed to the lower surface of the plate body 23a.

Fig. 7 is a perspective view showing a principal part of a polishing apparatus according to a first embodiment of the present invention, showing a modification of the polishing unit. In the polishing portion 2b of this modification, as shown in FIG. 7, the polishing member 25b can be directly fixed to the rotating shaft 22. In this case, there is no plate. The polishing member 25b may also be a grinding wheel.

Fig. 8 is a front elevational view showing a modification of the polishing apparatus according to the first embodiment of the first embodiment, showing a modification of the tension applying unit. As shown in Fig. 8, the tension applying portion has a guide roller 46 disposed on one side of the upstream side of the transport path, a guide roller 47 disposed on the downstream side of the transport path, and a guide roller 47 disposed on each of the guide rollers 46, 47. The tension adjusting roller 45 is interposed. The tension adjusting roller 45 presses the zipper S from above, and the zipper S is bent downward in a U shape. In this case, the tension adjusting roller 45 serves as a weight for pressing the zipper S, and tension is always applied to the zipper S. Thereby, since the zipper S is always in a state of being tensioned, it is wound on the support roller 31 without slack.

9 and FIG. 10 show a modification 5 of the polishing apparatus according to the first embodiment, FIG. 9 is a front view showing a main portion of a modification of the support portion, and FIG. 10 is a cross-sectional view showing a main portion of a modification of the support portion. In the first embodiment described above, the support portion 3 is constituted by a roller, but the support portion 3a may be formed of a plate as shown in Fig. 9 instead of the roller. In this case, the axis of the rotating shaft 22 of the grinding member extends parallel to the direction perpendicular to the surface of the plate.

As shown in Fig. 10, the support portion 3a has a support plate 31a for carrying the zipper S as a first member, and a second member 33a. The support plate 31a is supported by the frame 8, and the second member 33a is supported by the support plate 31a. Further, on the upper surface of the support plate 31a, a guide groove 34 for accommodating and guiding the fastener element E is formed in the same manner as described above. The support plate 31a has a right side portion and a left side portion across the guide groove 34. The second member 33a has a right portion opposite to the right portion and a left portion opposite to the left portion. Between the first member 31a and the second member 33a, there is a gap through which the fastener tape T can pass. Further, similarly to the above, a gap through which the fastener element E can pass is provided between the right portion and the left portion of the second member 33a.

Further, as described above, the example in which the rotating shaft 22 of the polishing member is disposed in the vertical direction has been described. However, as shown in FIG. 11, the rotating shaft 22 of the polishing member may be disposed in the horizontal direction. Fig. 11 is a front view showing a modification 6 of the first embodiment. Further, the rotation axis 22 of the polishing member is configured to extend in parallel with the direction perpendicular to the support portion 3, and the arrangement of the rotation shaft 22 of the polishing member is arbitrary.

(Second embodiment)

Hereinafter, a polishing apparatus according to a second embodiment of the present invention will be described with reference to Figs. 12 to 14 . The description of the second embodiment will be described with the same reference numerals as the first embodiment, and the same reference numerals will be given to the same members, and the description thereof will be omitted. Figure 12 is a front perspective view showing a polishing apparatus according to a second embodiment of the present invention, and Figure 13 is an enlarged sectional view showing a main portion of the polishing portion and the support portion (first support roller) in the polishing apparatus, and Figure 14 is the same. An enlarged cross-sectional view of a main portion of the polishing portion and the support portion (second support roller) in the apparatus.

As shown in FIG. 12, the support portion 13 of the polishing apparatus 101 of the second embodiment has a first support roller 131 and a second support roller 132. The first support roller 131 is disposed on the upstream side of the transport path. The second support roller 132 is disposed on the downstream side of the transport path as compared with the first support roller 131. The first support roller 131 and the second support roller 132 are disposed at substantially the same level in order to share the polishing unit 2 .

Further, a guide roller 145 is disposed on the downstream side of the first support roller 131, and a guide roller 144 is disposed on the downstream side of the second support roller 132. Similarly to the above-described guide roller 44, the guide rollers 144 and 145 are disposed below the uppermost portion of the first support roller 131 and the second support roller 132. Therefore, the zipper S is drilled under the guide roller 145 along the circumferential surface of the first support roller 131 after passing through the uppermost portion of the first support roller 131, and passes through the circumferential surface of the guide roller 145. Then, the peripheral surface of the second support roller 132 is climbed up, and after passing through the circumferential surface of the second support roller 132 at the uppermost portion of the second support roller 132, it is conveyed downward toward the guide roller 144, and is guided. The roller 144 is conveyed to the downstream side.

Thereby, the slide fastener S is prevented from floating upward between the first support roller 131 and the second support roller 132 and between the second support roller 132 and the conveyance unit 5, so that the posture of the slide fastener S is not disturbed. That is, the zipper S is prevented from moving away from the first support roller 131 and the second support roller 132, respectively, thereby stabilizing the posture of the fastener element E to be polished. Further, in this example, the guide roller 144 and the guide roller 145 are disposed at the same level, but they may not be disposed at the same level as long as the above-described effects can be achieved.

As shown in FIGS. 13 and 14, the first support roller 131 and the second support roller 132 of the support portion 13 have first members 131, 132 and second members 138, 133, respectively, the first members 131, 132 and the second member The members 138, 133 are spaced apart from each other by the gap between the fastener tapes T. Each of the first members is composed of a first support roller 131 and a second support roller 132, respectively. Guide grooves 139 and 134 for accommodating and guiding the fastener elements E are provided on the circumferential surfaces of the first support roller 131 and the second support roller 132, respectively. The guide groove 139 of the first support roller 131 has a first support surface 139a in contact with the fastener element E at the bottom of the groove. The first support surface 139a is inclined so as to bulge in a direction approaching the polishing member 25.

As shown in FIG. 13, the fastener element E has a base end portion Ea connected to the edge portion of the fastener tape T, and a front end portion away from the edge portion of the fastener tape T (in engagement with the opposite fastener element E) Part) Eb. When the fastener element E is received in the guiding groove 139, it is connected to the first supporting surface 139a. At the time of touch, since the first support surface 139a is inclined in a bulging manner, the front end portion Eb is displaced to be inclined upward toward the polishing member 25. Thereby, the front end portion Eb of the fastener element E is polished by the polishing member 25.

Further, as shown in FIG. 14, the guide groove 134 of the second support roller 132 has a second support surface 134a in contact with the fastener element E at the bottom of the groove. The second support surface 134a is flat (the surface parallel to the rotation axis of the second support roller 132). When the fastener element E is received by the first support roller 131 and then received in the guide groove 134 of the second support roller 132 to come into contact with the second support surface 134a, the base end portion Ea and the front end portion Eb are horizontal. Thereby, the base end portion Ea and the tip end portion Eb of the fastener element E are polished by the polishing member 25.

In the second embodiment, as shown in Figs. 12 and 14, the rotating shaft 22 of the polishing member extends in a direction perpendicular to the front surface or the back surface of the fastener element E which is in a horizontal posture in contact with the polishing member 25.

According to the polishing apparatus 101 of the second embodiment, the polishing member can grind the fastener elements E at two places of the first support roller 131 and the second support roller 132. Therefore, the polishing can be performed with high efficiency. Further, since the fastener element E is curved such that the front end side is tapered, there is a case where the entire surface is not polished. In addition to being able to polish the entire surface of the fastener element E, the polishing apparatus 101 of the second embodiment can polish only the surface on the end side before the fastener element E by changing the posture of the distal end portion. Therefore, the front end portion can be reliably polished.

Further, as shown in FIG. 15 and FIG. 16 , on the surface (polishing surface) of the fastener element E polished by the polishing apparatuses 1 and 101, a linear polishing mark Ec extending in the longitudinal direction of the slide fastener S is formed. Further, Fig. 15(a) shows a state in which the surface (polished surface) of the fastener element E before polishing has a rough unevenness, and Fig. 15(b) shows that the rough surface is smoothed by polishing. And forming a polishing mark Ec on the shiny surface.

Next, the features and effects of the respective embodiments of the present invention will be described.

A sprocket grinding device for a zipper, the zipper comprising a zipper tape T and being mounted on a pull a fastener element E on the front and back of the chain tape T, the sprocket grinding device for grinding the zipper element E in the zipper S, characterized in that it comprises: a transport path of the zipper S; The support portions 3, 3a, and 13 are disposed along the transport path, and are disposed to face the back surface and the front surface of the fastener element E so as to support the position of the fastener element E; and grinding The portions 2, 2a, and 2b are disposed to face the support portions 3, 3a, and 13 with the transport path interposed therebetween; the polishing portions 2, 2a, and 2b have a rotating shaft 22, and are fixed to the rotating shaft 22 and The polishing member 25 that is rotated by the rotation of the rotary shaft 22; the polishing member 25 is in contact with the other of the front surface and the back surface of the fastener element E to grind the front or back surface of the fastener element E, and the rotation of the polishing member 25 The shaft 22 extends in parallel with the direction perpendicular to the support portions 3, 3a, 13.

According to this feature, since the rotating shaft 22 of the polishing member 25 extends in parallel with the direction perpendicular to the support portions 3, 3a, 13 and the polishing member 25 is in contact with the front or back surface of the fastener element E, the polishing member is ground. When the zipper element E is ground, the surface of the zipper element E can approach or leave with a linear trajectory. Thereby, the surface of the fastener element E is not ground to a curved shape. Therefore, the quality of the product after grinding does not decrease.

In the above-described sprocket grinding device for zippers, the polishing portions 2, 2a have plate bodies 23, 23a fixed to the rotating shaft 22 and extending in a direction orthogonal to the axial direction of the rotating shaft 22. The polishing member 25 is fixed to the plate bodies 23, 23a.

According to this feature, since the polishing portions 2, 2a have the plate bodies 23, 23a fixed to the rotating shaft 22 and extending in a direction orthogonal to the axial direction of the rotating shaft 22, and the grinding member 25 is fixed to the plate body 23, In the case of 23a, the polishing member 25 can be easily attached to the rotating shaft 22.

In the above-described polishing device for fastener elements for zippers, the polishing portions 2, 2a have projections 24, 24a protruding from the plate bodies 23, 23a, and the polishing member 25 is attached to the front ends of the projections 24, 24a.

According to this feature, since the polishing member 25 is attached to the front ends of the projections 24 and 24a, the polishing member 25 for polishing the minimum of the fastener elements E can be disposed. Therefore, the manufacturing cost of the zipper can be reduced.

In the above-described sprocket grinding device for a zipper, the plate body 23 is a circular plate extending from the center of the rotating shaft 22 in the radial direction of the rotating shaft 22, and the plurality of polishing members 25 are along the plate body 23. The peripheral portions are arranged at specific intervals.

According to this feature, since the plurality of polishing members 25 are disposed on the circular plate, the fastener elements E can be polished with high efficiency.

In the above-described sprocket grinding device for a zipper, the plate body 23a is a rectangular plate extending from the center of the rotating shaft 22 in the radial direction of the rotating shaft 22, and one end of the plate body 23a is fixed to the rotating shaft 22. And the polishing member 25 is disposed at the other end of the plate body 23a.

According to this feature, since the plate body can also be a rectangular plate, the degree of freedom in designing the polishing portion is improved.

In the above-described polishing device for fastener elements for zippers, the polishing member 25 is made of diamond.

According to this feature, since the polishing member 25 is made of diamond and has high hardness, the fastener element E can be surely polished.

In the above-described sprocket grinding device for a zipper, the zipper S has a pair of zipper tapes T and zipper elements E attached to opposite edges of the zipper tape T, and the support portions 3 are engaged. The zipper element E of the state is supported.

According to this feature, since the support portion 3 supports the fastener element E in the engaged state, the fastener element E in the engaged state can be simultaneously polished. Therefore, the polishing can be performed with high efficiency.

In the above-described polishing device for fastener elements for zippers, the support portions 3, 3a, 13 have support surfaces that are in contact with any one of the back surface and the front surface of the fastener element E. 34a, 134a, 139a.

According to this feature, since the support portions 3, 3a, 13 have the support faces 34a, 134a, 139a which are in contact with the back surface or the front surface of the fastener element E, even when the fastener element E is in contact with the polishing member 25, even the fastener element E is pressed by the polishing member 25 to move to the opposite side of the polishing member 25, and the posture of the fastener element E is not disturbed by the support from the support surfaces 34a, 134a, and 139a.

In the above-described sprocket grinding device for zippers, the support portions 3, 3a, 13 have guide grooves 34, 134, 139 for guiding the movement of the fastener elements E, and the guide grooves 34, 134, 139 The bottom surface is the support surfaces 34a, 134a, 139a.

According to this feature, since the support portions 3, 3a, 13 have guide grooves 34, 134, 139 for guiding the movement of the fastener elements E, and the bottom surfaces of the guide grooves 34, 134, 139 are the support surfaces 34a, 134a, 139a, therefore, when the fastener element E is in contact with the polishing member 25, even if the fastener element E is towed by the polishing member 25 and is to be moved together with the polishing member 25 in the rotational direction of the polishing member 25, due to the guide grooves 34, 134, 139 The limitation of the zipper element E is not disordered.

In the above-described sprocket grinding device for zipper, the support portions 3, 13 are rollers (support rollers) 31 having a rotation shaft (supporting) extending in a direction orthogonal to the rotation axis of the polishing portion. The roller rotates the shaft 32 and is rotatable about the rotation shaft (support roller rotation axis) 32.

According to this feature, since the support portions 3 and 13 are rotatable rollers, the chain can be quickly conveyed. Further, the zipper S is tensioned by being wound around the rollers (support rollers) 31, 131, and 132, thereby having a stable posture. Therefore, the posture of the zipper S is not disturbed during the grinding.

In the above-described sprocket grinding device for zipper, the support portion 3, 13 includes a first member 31, 31a, 131, 132 having a first face and a second member 33, 33a having a second face, 138, 133, first members 31, 31a, 131, 132 and second member 33, 33a, 138, and 133 are disposed to face each other across the transport path, and the zipper tape T can pass between the first members 31, 31a, 131, and 132 and the second members 33, 33a, 138, and 133. The gap, when the zipper tape T passes through the gap, the first face is opposed to the back surface of the zipper tape T, and the second face is opposed to the front surface of the zipper tape T.

According to this feature, since the support portions 3, 13 include the first members 31, 31a, 131, 132 and the second members 33, 33a, 138, 133, and in the first members 31, 31a, 131, 132 and the second member 33, 33a, 138, 133 between the first member 31, 31a, 131, 132 and the zipper tape T when the zipper tape T passes through the gap. The back faces are opposed to each other, and the second faces of the second members 33, 33a, 138, and 133 are opposed to the front surface of the fastener tape T, so that the fastener tape T can be protected so that the polishing member 25 does not come into contact with the fastener tape T. Thereby, the zipper tape T is not damaged.

In the above-described sprocket grinding device for a zipper, the support portion 13 has a first roller (first support roller) 131 and a second roller (second support roller) 132, and the first roller (first support roller) The 131 is disposed on the upstream side of the second roller (second support roller) 132 in the transport path.

According to this feature, since the support portion 13 has the two rollers (the first support roller 131 and the second support roller 132) disposed in the front and rear of the transport path, the polishing member 25 can be attached to the fastener element E at two places of the support portion 13. Grinding. Thereby, polishing can be performed with high efficiency.

In the above-described sprocket grinding device for zipper, the support portion 13 has a first support surface 139a for supporting the fastener element E in the first posture and a second posture for zipper element E The second supporting surface 134a is supported, the first supporting surface 139a is inclined toward the grinding member 25, and the second supporting surface 134a is flat, and the fastener element E has a base end which is in contact with the edge of the fastener tape T The Ea and the self-edge portion are separated from the front end portion Eb, and the first support surface 139a displaces the front end portion Eb of the fastener element toward the polishing member 25.

According to this feature, the grinding device can research the entire surface of the fastener element E. In addition to the grinding, it is also possible to polish only the surface of the front end portion Eb side of the fastener element E. Since the fastener element E is curved in such a manner that the front end side is tapered, there may be cases where the entire surface is not ground. According to this configuration, the tip end portion Eb can be surely polished by changing the posture of the distal end portion Eb.

In the above-described sprocket grinding device for zippers, the first support surface 139a is formed on the first roller 131, and the second support surface 134a is formed on the second roller 132.

According to this feature, it is possible to realize a configuration in which not only the entire surface of the fastener element E can be polished but also the surface on the side of the front end portion Eb of the fastener element E can be polished with a simple structure.

In the above-described polishing device for fastener elements for a fastener, the polishing device further includes a transfer unit 5 for the slide fastener S, and the transfer unit 5 is disposed on the downstream side of the support portions 3 and 13 in the transport path; In the tension applying unit 4, the tension applying unit 4 is disposed on the upstream side of the support portions 3 and 13 in the transport path, and applies tension to the zipper S.

According to this feature, the polishing apparatus further includes the transport unit 5 of the zipper S and the tension applying unit 4 that applies tension to the zipper S. Therefore, tension can be easily applied to the splicer S when the slinger S is transported to the support units 3 and 13 The posture of the zipper S is not disordered.

The embodiments and effects of the present invention have been described above, but the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit and scope of the invention.

1‧‧‧ grinding device

2‧‧‧ Grinding Department

3‧‧‧Support

4‧‧‧Tensation Department

5‧‧‧Transportation Department

6‧‧‧ pillar

7‧‧‧ pedestal

8‧‧‧Frame

21‧‧‧Motor

22‧‧‧Rotary axis

23‧‧‧ board

31‧‧‧Support roller (first member)

32‧‧‧Support roller rotation axis

41‧‧‧Pushing roller

42‧‧‧Pushing roller

43‧‧‧ Arm

44‧‧‧ Guide roller

51‧‧‧Transport roller

52‧‧‧Transport roller

53‧‧‧ Arm

54‧‧‧Pushing roller

S‧‧‧ zipper

Claims (17)

A zipper polishing device for a zipper, the zipper comprising a zipper tape and a zipper fastener having a front and a back surface mounted on the zipper tape, wherein the zipper for the zipper is used for the zipper in the zipper The sprocket is polished, and includes: the zipper transfer path; the support portion is disposed along the transport path, and is configured to support the zipper teeth and any of the back surface and the front surface of the zipper element One of the polishing portions is disposed to face the support portion via the transport path; the polishing portion includes a rotating shaft; and the rotating portion is fixed to the rotating shaft and rotatable by the rotating shaft And the rotating polishing member; the polishing member is in contact with the other of the front surface and the back surface of the fastener element to polish the front surface or the back surface of the fastener element, and the rotation axis of the polishing member is opposite to The support portion extends in a direction perpendicular to the vertical direction. The sprocket grinding device according to claim 1, wherein the polishing portion has a plate body fixed to the rotating shaft and extending in a direction orthogonal to an axial direction of the rotating shaft, wherein the polishing member is fixed to the plate Physically. A sprocket grinding device according to claim 2, wherein the polishing portion has a projection protruding from the plate body, and the polishing member is attached to a front end of the protrusion. A grinding device for a sprocket for a zipper of claim 2 or 3, wherein The plate system is a circular plate extending from a center of the rotating shaft in a radial direction of the rotating shaft, and a plurality of the polishing members are disposed at a predetermined interval along a peripheral edge portion of the plate body. The sprocket grinding device according to claim 2 or 3, wherein the plate system has a rectangular plate extending from a center of the rotating shaft in a radial direction of the rotating shaft, and one end of the plate body is fixed to the rotating shaft, Further, the polishing member is disposed at the other end of the plate body. A sprocket grinding device according to claim 1, wherein the polishing member is made of diamond. The zipper for zipper fastener of claim 1, wherein the zipper has a pair of the zipper tapes and the fastener elements attached to opposite edges of the zipper tape, the support portions being in an engaged state The above zipper fasteners are supported. A sprocket grinding device according to claim 1, wherein the support portion has a support surface that is in contact with any one of a back surface and a front surface of the fastener element. The sprocket grinding device according to claim 8, wherein the support portion has a guide groove for guiding movement of the fastener element, and a bottom surface of the guide groove is the support surface. The sprocket grinding device according to claim 1, wherein the support portion is a roller, and the roller has a rotation axis extending in a direction orthogonal to the rotation axis of the polishing portion, and is rotatable about the rotation axis Rotate. The sprocket grinding device according to claim 1, wherein the support portion includes a first member having a first surface and a second member having a second surface, and the first member and the second member are separated by a transport path Having the above-mentioned fastener tape between the first member and the second member When the fastener tape passes through the gap, the first surface faces the back surface of the fastener tape, and the second surface faces the front surface of the fastener tape. The sprocket polishing device according to claim 10, wherein the support portion has a first roller and a second roller, and the first roller is disposed on the upstream side of the second roller in the transport path. The sprocket grinding device according to claim 12, wherein the support portion has a first support surface for supporting the fastener element in a first posture and a support for supporting the fastener element in a second posture a second supporting surface, the first supporting surface is inclined toward a direction close to the grinding member, and the second supporting surface is flat, the fastener element has a base end portion in contact with an edge portion of the fastener tape, and the edge The first support surface is displaced from the front end portion, and the front end portion of the fastener element is displaced toward the polishing member. A sprocket grinding device according to claim 13, wherein said first support surface is formed on said first roller, and said second support surface is formed on said second roller. The polishing device for a fastener element for a fastener according to claim 1, wherein the polishing device further includes a zipper transfer unit that is disposed on a downstream side of the support portion in the transport path, and a tension applying unit that is The conveyance path is disposed on the upstream side of the support portion, and tension is applied to the slide fastener. The sprocket grinding device of claim 1, wherein the rotating shaft of the polishing member is in contact with the polishing member The surfaces of the zipper teeth extend in parallel in the direction perpendicular to the surface. A sprocket for a zipper, characterized in that it is ground by a grinding device for a zipper for fasteners according to any one of claims 1 to 16.