Zipper cloth tape unwinding device and guide chain wheel thereof

Abstract

The utility model discloses a zipper cloth tape unwinding device and a guide chain wheel thereof. The guide chain wheel comprises a support, a motor, a sleeve, a first chain protection plate, a second chain protection plate and a plurality of brushes. The sleeve is rotatably arranged on the outer side of the bracket in a sleeving manner; the first chain protection plate and the second chain protection plate are arranged on the outer side of the support in a sleeving mode and connected with the two end faces of the sleeve in a one-to-one mode. The multiple brushes are arranged on the peripheral wall of the sleeve and distributed between the first chain protection plate and the second chain protection plate in the first direction. The first direction is parallel to the axial direction of the sleeve; the motor is arranged on the inner side of the support, an output shaft of the motor is located on the outer side of the support and used for driving the first chain protection plate to rotate, then the multiple brushes are driven to rotate so as to make frictional contact with the zipper cloth belt, the zipper cloth belt is continuously brushed so as to unwind the zipper cloth belt, and based on the flexibility of the brushes, the zipper cloth belt can bend the brushes to unwind the zipper cloth belt. And the contact area between the brush and the zipper cloth tape is increased, and the zipper cloth tape can be well unwound under the condition that the zipper cloth tape is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of clothing production, in particular to a zipper tape unwinding device and a sprocket guide wheel thereof. Background Art

[0002] At present, society has shown a demand for personalized clothing, and a large number of ribbon products with metal products (pulls) have appeared on clothing; zipper tape is one of them.

[0003] Currently, chain guide mechanisms (zipper tape unwinding devices) can be used on the market to solve the problems of zipper tape twisting and winding; among them, Figure 1 As shown, the chain guide mechanism mainly uses the chain guide wheel to solve the problems of zipper tape twisting and winding, that is, the zipper tape is unwound by using the guide bar of the chain guide wheel to rub and collide with the zipper tape. However, this method has the following disadvantages:

[0004] 1. The contact area between the guide sprocket's stopper and the zipper tape is small, and the unwinding effect is unstable;

[0005] 2. The stopper is usually made of metal material, which can easily damage the slider when in contact with the zipper tape. Utility Model Content

[0006] In view of this, the utility model provides a guide chain wheel, which can achieve a better unwinding effect for the zipper tape while preventing damage to the zipper tape.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A guide chain wheel, applied to a zipper tape unwinding device, comprises: a bracket, a motor, a sleeve, a first chain guard plate, a second chain guard plate and a plurality of brushes;

[0009] The sleeve can be rotatably sleeved on the outer side of the bracket;

[0010] The first chain guard plate and the second chain guard plate are respectively sleeved on the outside of the bracket and connected one by one with two end surfaces of the sleeve;

[0011] The plurality of brushes are respectively arranged on the outer peripheral wall of the sleeve, and are respectively distributed between the first chain guard plate and the second chain guard plate along a first direction; wherein the first direction is parallel to the axial direction of the sleeve;

[0012] The motor is arranged on the inner side of the bracket, and the output shaft of the motor is located on the outer side of the bracket and is used to drive the first chain guard plate to rotate.

[0013] Preferably, the plurality of brushes are respectively arranged on the outer peripheral wall of the sleeve along different radial directions of the sleeve and are evenly distributed around the axial direction of the sleeve.

[0014] Preferably, the brush comprises: a carrier and a brush body;

[0015] The carrier is arranged on the outer peripheral wall of the sleeve;

[0016] The brush body is arranged on the carrier along the radial direction of the sleeve, and is distributed between the first chain guard plate and the second chain guard plate along the first direction.

[0017] Preferably, the first end of the carrier is away from the outer peripheral wall of the sleeve, and the brush body is arranged on the first end of the carrier along the radial direction of the sleeve;

[0018] The guide sprocket also includes a fixing assembly;

[0019] The fixing assembly is disposed between the first chain guard plate and the second chain guard plate and is used to fix the first ends of the plurality of carriers.

[0020] Preferably, the fixing assembly comprises a plurality of arc-shaped fixing plates;

[0021] The plurality of arc-shaped fixing plates are arranged around the outer side of the sleeve and abut between the first chain guard plate and the second chain guard plate; wherein, among the plurality of arc-shaped fixing plates, there is a gap between each two adjacent arc-shaped fixing plates;

[0022] The first ends of the plurality of carriers are clamped one by one between the plurality of gaps of the plurality of arc-shaped fixing plates.

[0023] Preferably, it also includes a plurality of blocking rods;

[0024] The plurality of blocking rods are respectively arranged between the first chain guard plate and the second chain guard plate along the first direction, and are located one by one at the rear side of the plurality of brush bodies in the rotation direction.

[0025] Preferably, the output shaft of the motor is located outside the first end of the bracket;

[0026] The first chain guard plate is located on the outer side of the first end portion of the bracket;

[0027] The guide sprocket also includes a shaft sleeve;

[0028] The shaft sleeve is sleeved on the output shaft of the motor and connected to the first chain guard plate.

[0029] Preferably, two bearings are also included;

[0030] The two bearings are respectively sleeved on the first end portion and the middle portion of the bracket;

[0031] The sleeve is sleeved on the outer rings of the two bearings, and the two bearings are respectively located on the inner sides of the two ends of the sleeve.

[0032] A zipper tape unwinding device comprises a sprocket guide wheel, wherein the sprocket guide wheel is the sprocket guide wheel described above.

[0033] It can be seen from the above technical solution that the guide chain wheel provided by the utility model is provided with a plurality of brushes on the outer peripheral wall of the guide chain wheel body, and the brushes are respectively distributed between the two chain guard plates along the axial direction of the guide chain wheel body. The plurality of brushes on the guide chain wheel body are used to directly rub against the zipper tape when rotating, so as to facilitate the continuous brushing of the zipper tape to achieve the unwinding of the zipper tape, and based on the flexibility of the brush, the zipper tape will bend the brush, thereby increasing the contact area between the brush and the zipper tape, and also increasing the pressure on the zipper tape, so that the zipper tape can obtain a better unwinding effect without damaging the zipper tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of unwinding the zipper tape of an existing guide sprocket;

[0036] Among them, 2a is the existing guide sprocket (metal pulley), 21a is the stopper rod; 4 is the zipper tape;

[0037] Figure 2 A schematic diagram of the structure of a zipper tape unwinding device provided in an embodiment of the utility model;

[0038] Figure 3 A schematic diagram of the structure of the guide sprocket provided in the embodiment of the utility model;

[0039] Figure 4 An exploded view of the structure of the guide sprocket provided in the embodiment of the utility model;

[0040] Figure 5 A structural front view of a guide sprocket provided in an embodiment of the utility model;

[0041] Figure 6 for Figure 5 AA section view;

[0042] Figure 7A schematic diagram of the partial structure of the guide sprocket provided in the embodiment of the utility model;

[0043] Figure 8 Another partial structural schematic diagram of the guide chain wheel provided in the embodiment of the utility model;

[0044] Fig. 9 Another structural schematic diagram of the guide sprocket provided in the embodiment of the utility model;

[0045] Fig.10 A schematic diagram of the installation of a motor in a bracket provided in an embodiment of the utility model.

[0046] Among them, 1 is a guide chain frame; 2 is a guide chain wheel, 21 is a motor, 21-1 is an output shaft, 22 is a bracket, 23 is an arc-shaped fixed plate, 24 is a first chain guard plate, 25 is a brush, 25-1 is a carrier, 25-2 is a brush body, 26 is a stop rod, 27 is a sleeve, 28 is a bearing, 29 is a bushing, and 210 is a second chain guard plate; 3 is a guide chain wheel fixing block. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] The guide sprocket 2 provided in the embodiment of the utility model is applied to a zipper tape unwinding device, such as Figure 4 As shown, the guide chain wheel 2 includes: a bracket 22, a motor 21, a sleeve 27, a first chain guard plate 24, a second chain guard plate 210 and a plurality of brushes 25;

[0049] like Figure 7 As shown, the sleeve 27 can be rotatably sleeved on the outer side of the bracket 22;

[0050] like Figure 3 As shown, the first chain guard plate 24 and the second chain guard plate 210 are respectively sleeved on the outside of the bracket 22 and connected one by one with the two end surfaces of the sleeve 27;

[0051] like Figure 7 As shown, a plurality of brushes 25 are respectively disposed on the outer peripheral wall of the sleeve 27 and are respectively distributed between the first chain guard plate 24 and the second chain guard plate 210 along a first direction; wherein the first direction is parallel to the axial direction of the sleeve 27;

[0052] like Fig.10As shown, the motor 21 is disposed on the inner side of the bracket 22 , and its output shaft 21 - 1 is located on the outer side of the bracket 22 and is used to drive the first chain guard plate 24 to rotate.

[0053] It should be noted that if Fig.10 As shown, the bracket 22 can be a cylindrical bracket; accordingly, as shown in Figure 7 As shown, the sleeve 27 can be rotatably sleeved on the outer side of the cylindrical bracket; Figure 3 As shown, the first chain guard plate 24 and the second chain guard plate 210 are respectively sleeved on the outside of the cylindrical bracket, and can be connected to the two end surfaces of the sleeve 27 one by one by screws, so that the sleeve 27, the first chain guard plate 24, and the second chain guard plate 210 form a guide wheel body; wherein, the first chain guard plate 24 and the second chain guard plate 210 are used to restrain or limit the left and right directions of the zipper tape; as shown Figure 3 As shown, a plurality of brushes 25 are actually disposed at different positions on the outer peripheral wall of the guide wheel body, and are respectively distributed between the two chain guard plates of the guide wheel body along a first direction, that is, each brush 25 is distributed along a direction parallel to the axial direction of the sleeve 27; wherein the brush 25 is used to contact with the zipper tape so as to unwind the zipper tape; Fig.10 As shown, the motor 21 is arranged on the inner side of the cylindrical bracket, and its output shaft 21-1 (motor shaft) extends out of the outer side of the cylindrical bracket and is used to drive the first chain guard plate 24 to rotate, thereby driving the guide chain wheel body to rotate, and also driving the multiple brushes 25 on the guide chain wheel body to rotate;

[0054] In addition, if Figure 2 As shown, in the zipper tape unwinding device, one end of the bracket 22 of the guide sprocket 2 is fixed on the guide sprocket fixing block 3, and the guide sprocket body is driven to rotate by the output shaft 21-1 of the motor 1 built into the bracket 22; when the zipper tape passes through, the output shaft 21-1 of the motor 1 drives the guide sprocket body to rotate in the opposite direction, so that the brush 25 on the guide sprocket body continuously brushes the zipper tape to unwind the zipper tape; in this process, the brush 25 is in direct friction contact with the zipper tape to brush the zipper tape, and because the brush 25 is flexible, the zipper tape will bend the brush 25, thereby increasing the contact area between the brush 25 and the zipper tape. Of course, the brush 25 also has a certain elasticity, and when it is bent, it will also increase the pressure on the zipper tape. In this way, it helps to improve the unwinding effect of the zipper tape. At the same time, based on the flexibility of the brush 25, damage to the zipper tape can also be avoided during the unwinding process.

[0055] That is to say, the guide sprocket 2 provided by the present solution is provided with a plurality of brushes 25 on the outer peripheral wall of the guide sprocket body, and the brushes 25 are respectively distributed between the two chain guard plates along the axial direction of the guide sprocket body. The plurality of brushes 25 on the guide sprocket body are used to directly rub against the zipper tape when rotating, so as to facilitate the continuous brushing of the zipper tape to achieve the unwinding of the zipper tape. Moreover, based on the flexibility of the brushes 25, the zipper tape will bend the brushes 25, thus increasing the contact area between the brushes 25 and the zipper tape, and also increasing the pressure on the zipper tape, so as to prevent the zipper tape from being damaged (scratched), and enable the zipper tape to achieve a better unwinding effect. Of course, the present guide sprocket 2 can guide the zipper tape and achieve a better unwinding.

[0056] In this scheme, if Figure 7 As shown, a plurality of brushes 25 are respectively arranged on the outer peripheral wall of the sleeve 27 along different radial directions of the sleeve 27, and are evenly distributed around the axial direction of the sleeve 27. In other words, a plurality of brushes 25 are respectively arranged on the outer peripheral wall of the sleeve 27 along different radial directions of the sleeve 27, and are evenly distributed on the outer peripheral wall of the sleeve 27, so that when the zipper tape passes through, the output shaft 21-1 of the motor 1 drives the guide chain wheel body to rotate in the opposite direction, which can facilitate the brushes 25 on the guide chain wheel body to brush the zipper tape continuously and evenly, so that the zipper tape can obtain a better unwinding effect. Of course, in addition to the angle between the brush 25 and the cross section of the outer peripheral wall of the sleeve 27 being 90° (that is, the brush 25 is arranged along the radial direction of the sleeve 27), the angle can also be greater than 90°.

[0057] Specifically, Figure 4 As shown, each brush 25 includes: a carrier 25-1 and a brush body 25-2;

[0058] like Figure 7 As shown, the carrier 25-1 is disposed on the outer peripheral wall of the sleeve 27; wherein, the carrier 25-1 can also be disposed on the outer peripheral wall of the sleeve 27 along the radial direction of the sleeve 27, and the carrier 25-1 is also a brush frame body, which is used to load and support the brush body 25-2;

[0059] The brush body 25-2 is arranged on the carrier 25-1 along the radial direction of the sleeve 27, and is distributed along the first direction between the first chain guard plate 24 and the second chain guard plate 210. That is to say, the brush body 25-2 is arranged on the carrier 25-1 along the radial direction of the sleeve 27, and is also arranged between the first chain guard plate 24 and the second chain guard plate 210 along the direction parallel to the axial direction of the sleeve 27, so that when the guide wheel body is driven to rotate, it is ensured that the brush 25 can better brush the zipper tape; wherein, the brush body 25-2 can use flexible bristles.

[0060] Furthermore, if Figure 7As shown, the first end of the carrier 25-1 is away from the outer peripheral wall of the sleeve 27, and the brush body 25-2 is arranged on the first end of the carrier 25-1 along the radial direction of the sleeve 27; wherein, the first end of the carrier 25-1 is the end of the carrier 25-1 away from the outer peripheral wall of the sleeve 27, and correspondingly, the second end of the carrier 25-1 is the end of the carrier 25-1 close to the outer peripheral wall of the sleeve 27, that is, the second end of the carrier 25-1 is arranged on the outer peripheral wall of the sleeve 27;

[0061] The guide sprocket 2 also includes a fixing assembly;

[0062] The fixing assembly is disposed between the first chain guard plate 24 and the second chain guard plate 210 and is used to fix the first ends of the plurality of carriers 25-1. In this way, the plurality of brushes 25 can be more firmly fixed on the outer peripheral wall of the guide chain wheel body, ensuring that the brushes 25 on the outer peripheral wall of the guide chain wheel body can normally brush the zipper tape.

[0063] Furthermore, if Figure 7 As shown, the fixing assembly includes a plurality of arc-shaped fixing plates 23;

[0064] A plurality of arc-shaped fixing plates 23 are disposed around the outer side of the sleeve 27 and abut between the first chain guard plate 24 and the second chain guard plate 210 (eg, Figure 3 As shown); among them, Figure 4 As shown, among the plurality of arc-shaped fixing plates 23, there is a gap between each two adjacent arc-shaped fixing plates 23;

[0065] The first ends of the plurality of carriers 25-1 are clamped one by one between the plurality of gaps of the plurality of arc-shaped fixing plates 23. The plurality of arc-shaped fixing plates 23 can be sequentially arranged at intervals on the outer side of the sleeve 27 along the circumference of the sleeve 27, and the interval between two adjacent arc-shaped fixing plates 23 is the gap between the two adjacent arc-shaped fixing plates 23. Figure 4 As shown, there is a gap between every two adjacent arc-shaped fixing plates 23, that is, the multiple arc-shaped fixing plates 23 form a fixing sleeve that is sleeved on the outside of the sleeve 27 and has multiple gaps; the first ends of the multiple carriers 25-1 are clamped one by one between the multiple gaps of the fixing sleeve, that is, the first end of the carrier 25-1 is abutted (clamped) by two adjacent arc-shaped fixing plates 23. Of course, the multiple arc-shaped fixing plates 23 are designed in this way, which is not only convenient for fixing the first ends of the multiple carriers 25-1 one by one, but also convenient for installing (clamping) an arc-shaped fixing plate 23 between the first ends of two adjacent carriers 25-1, that is, it is also convenient for installing the fixing sleeve with multiple gaps. In addition, as Figure 7 As shown, the arc-shaped fixing plate 23 is a curved fixing plate, and the curvature of the curved fixing plate is slightly less than 90°, ensuring that after the plurality of curved fixing plates are arranged, there is a gap between each two adjacent curved fixing plates for clamping the first end of the corresponding carrier 25-1. Figure 7 As shown, a through hole is provided in the middle portion of each arc-shaped fixing plate 23, and a plurality of internal threaded holes are respectively provided on the outer peripheral wall of the sleeve 27. The plurality of internal threaded holes on the outer peripheral wall of the sleeve 27 and the through holes of the plurality of arc-shaped fixing plates 23 are relatively distributed along the radial direction of the sleeve 27. In this way, a plurality of bolts can be passed through the through holes of the plurality of arc-shaped fixing plates 23 one by one, and locked one by one with the plurality of internal threaded holes on the outer peripheral wall of the sleeve 27. Of course, the bolt heads of the plurality of bolts are fitted one by one with the outer end surfaces of the through holes of the plurality of arc-shaped fixing plates 23. In this way, the plurality of arc-shaped fixing plates 23 can be locked on the outer peripheral wall of the sleeve 27 to prevent the plurality of arc-shaped fixing plates 23 from moving in the radial direction away from the sleeve 27.

[0066] In this scheme, if Figure 7 As shown, the guide chain wheel 2 provided in the embodiment of the utility model further includes a plurality of blocking rods 26;

[0067] like Figure 3 and Figure 7 As shown, a plurality of baffles 26 are respectively arranged between the first chain guard plate 24 and the second chain guard plate 210 along the first direction, and are located one by one at the rear side of the rotation direction of the plurality of brush bodies 25-2. The plurality of baffles 26 are respectively connected between the first chain guard plate 24 and the second chain guard plate 210 along the first direction, and are distributed around the axial direction of the sleeve 27, wherein the two ends of the baffles 26 can be respectively connected to the first chain guard plate 24 and the second chain guard plate 210 by screws, and the plurality of baffles 26 can be located one by one at the rear side of the rotation direction of the upper part of the plurality of brush bodies 25-2, so that when the upper part of the brush body 25-2 is bent due to brushing the zipper tape, the baffles 26 can support the bent upper part of the brush body 25-2 to prevent the lower part of the brush body 25-2 from being bent, so as to prevent the entire brush body 25-2 from being bent, which of course will also increase the pressure on the zipper tape.

[0068] Specifically, Fig.10 As shown, the output shaft 21 - 1 of the motor 21 is located outside the first end of the bracket 22 ;

[0069] like Figure 8 As shown, the first chain guard plate 24 is located outside the first end portion of the bracket 22; wherein the output shaft 21 - 1 of the motor 21 is also located outside the first chain guard plate 24;

[0070] like Fig. 9 As shown, the guide sprocket also includes a shaft sleeve 29;

[0071] The shaft sleeve 29 is sleeved on the output shaft 21-1 of the motor 21 and connected to the first chain guard plate 24. The shaft sleeve 29 is sleeved and fixed on the output shaft 21-1 of the motor 21 and is also connected to the first chain guard plate 24 by screws. That is, the first chain guard plate 24 and the output shaft 21-1 of the motor 21 are both located outside the first end of the bracket 22, and the output shaft 21-1 of the motor 21 is transmission-connected to the first chain guard plate 24 through the shaft sleeve 29, that is, the output shaft 21-1 of the motor 21 is transmission-connected to the first chain guard plate 24 of the guide sprocket body through the shaft sleeve 29, thereby driving the guide sprocket body to rotate relative to the cylindrical bracket. Of course, the design of this scheme can make the transmission structure between the output shaft 21-1 of the motor 21 and the first chain guard plate 24 simple and the transmission coordination convenient.

[0072] Furthermore, if Figure 4 As shown, the guide sprocket 2 provided in the embodiment of the utility model further includes two bearings 28;

[0073] Two bearings 28 are respectively mounted on the first end and the middle portion of the bracket 22; Figure 8 As shown, a bearing 28 is sleeved on the first end of the bracket 22. Figure 7 As shown, another bearing 28 is sleeved on the middle part of the bracket 22; accordingly, as shown Figure 3 As shown, the second end of the bracket 22 is located outside the second chain guard plate 210 and is used to be fixed to the guide chain wheel fixing block 3;

[0074] like Figure 5 and Figure 6 As shown, the sleeve 27 is sleeved on the outer rings of the two bearings 28, and the two bearings 28 are respectively located on the inner sides of the two ends of the sleeve 27. That is to say, the inner circumferential walls at both ends of the sleeve 27 rotate relative to the bracket 22 through the bearings 28; wherein, a bearing 28 is provided between the inner circumferential wall of one end of the sleeve 27 and the outer circumferential wall of the first end of the bracket 22, and a bearing 28 is provided between the inner circumferential wall of the other end and the outer circumferential wall of the middle part of the bracket 22, so that the sleeve 27 can rotate smoothly relative to the bracket 22, thereby helping to improve the stability of the rotation of the guide sprocket body relative to the bracket 22.

[0075] It should also be noted that if Figure 4 As shown, the sleeve 27, the bracket 22, the first chain guard plate 24 and / or the second chain guard plate 210 are provided with weight-reducing grooves; Figure 4 As shown, the first chain guard plate 24 is provided with a plurality of strip-shaped weight-reducing grooves, which are evenly distributed around the axial direction of the first chain guard plate 24. The second chain guard plate 210 is similar, and will not be described in detail here. In addition, the carrier 25-1 of the brush 25 may include two carrier monomers, and correspondingly, the brush body 25-2 may include two brush body monomers, wherein, as shown in FIG. Figure 7As shown, two carrier monomers are arranged in parallel on the outer peripheral wall of the sleeve 27 along the first direction, and two brush body monomers are arranged one by one on the two carrier monomers along the radial direction of the sleeve 27, and the two brush body monomers are also distributed adjacent to each other.

[0076] like Figure 2 As shown, the embodiment of the utility model also provides a zipper tape unwinding device, including a guide sprocket, and the guide sprocket is the guide sprocket as described above. Since the present solution adopts the guide sprocket as described above, it also has corresponding beneficial effects, which can be specifically referred to the previous description and will not be repeated here.

[0077] In addition, it should be noted that the above-mentioned zipper tape unwinding device is a chain guide mechanism. Figure 2 As shown, the zipper tape unwinding device includes: a guide chain frame 1, a guide chain wheel 2 and a guide chain wheel fixing block 3; wherein, the guide chain wheel fixing block 3 is arranged on the guide chain frame 1, the second end of the bracket 22 of the guide chain wheel 2 is fixed on the guide chain wheel fixing block 3, and the brush 25 is used to brush the zipper tape.

[0078] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0079] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A guide sprocket, used in a zipper tape unwinding device, characterized in that: include: A bracket (22), a motor (21), a sleeve (27), a first chain guard plate (24), a second chain guard plate (210) and a plurality of brushes (25); The sleeve (27) is rotatably sleeved on the outer side of the bracket (22); The first chain guard plate (24) and the second chain guard plate (210) are respectively sleeved on the outside of the bracket (22) and are connected one by one to two end surfaces of the sleeve (27); The plurality of brushes (25) are respectively arranged on the outer peripheral wall of the sleeve (27), and are respectively distributed between the first chain guard plate (24) and the second chain guard plate (210) along a first direction; wherein the first direction is parallel to the axial direction of the sleeve (27); The motor (21) is arranged on the inner side of the bracket (22), and its output shaft (21-1) is located on the outer side of the bracket (22) and is used to drive the first chain guard plate (24) to rotate.

2. The guide sprocket according to claim 1, characterized in that: The plurality of brushes (25) are respectively arranged on the outer peripheral wall of the sleeve (27) along different radial directions of the sleeve (27), and are evenly distributed around the axial direction of the sleeve (27).

3. The guide sprocket according to claim 2, characterized in that: The brush (25) comprises: a carrier (25-1) and a brush body (25-2); The carrier (25-1) is arranged on the outer peripheral wall of the sleeve (27); The brush body (25-2) is arranged on the carrier (25-1) along the radial direction of the sleeve (27), and is distributed between the first chain guard plate (24) and the second chain guard plate (210) along the first direction.

4. The guide sprocket according to claim 3, characterized in that: The first end of the carrier (25-1) is away from the outer peripheral wall of the sleeve (27), and the brush body (25-2) is arranged on the first end of the carrier (25-1) along the radial direction of the sleeve (27); The guide sprocket also includes a fixing assembly; The fixing assembly is arranged between the first chain guard plate (24) and the second chain guard plate (210), and is used to fix the first ends of the plurality of carriers (25-1).

5. The guide sprocket according to claim 4, characterized in that: The fixing assembly comprises a plurality of arc-shaped fixing plates (23); The plurality of arc-shaped fixing plates (23) are arranged around the outer side of the sleeve (27) and are in contact with the first chain guard plate (24) and the second chain guard plate (210); wherein, among the plurality of arc-shaped fixing plates (23), there is a gap between each two adjacent arc-shaped fixing plates (23); The first ends of the plurality of carriers (25-1) are clamped one by one between the plurality of gaps of the plurality of arc-shaped fixing plates (23).

6. The guide sprocket according to claim 3, characterized in that: Also includes a plurality of blocking rods (26); The plurality of blocking rods (26) are respectively arranged between the first chain guard plate (24) and the second chain guard plate (210) along the first direction, and are located one by one at the rear side of the plurality of brush bodies (25-2) in the rotation direction.

7. The guide sprocket according to claim 1, characterized in that: The output shaft (21-1) of the motor (21) is located outside the first end of the bracket (22); The first chain guard plate (24) is located outside the first end portion of the bracket (22); The guide sprocket also includes a shaft sleeve (29); The shaft sleeve (29) is sleeved on the output shaft (21-1) of the motor (21) and is connected to the first chain guard plate (24).

8. The guide sprocket according to claim 7, characterized in that: Also includes two bearings (28); The two bearings (28) are respectively sleeved on the first end portion and the middle portion of the bracket (22); The sleeve (27) is sleeved on the outer rings of the two bearings (28), and the two bearings (28) are respectively located on the inner sides of two ends of the sleeve (27).

9. A zipper tape unwinding device, comprising a sprocket guide, characterized in that: The guide sprocket is the guide sprocket as described in any one of claims 1-8.

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