Shaft sleeve, shaft body kit and tufting equipment

Abstract

The embodiment of the utility model provides a shaft sleeve, a shaft body kit and tufting equipment. The shaft sleeve comprises a connecting part and a deformation part, the connecting part is provided with a mounting hole, the mounting hole penetrates through the two opposite sides of the connecting part in the first direction, the shaft body penetrates through the mounting hole, and the radial size of the mounting hole is larger than that of the shaft body. The deformation part is connected to the connecting part, has flexibility or elasticity and is used for abutting against the shaft body. Wherein at least part of the deformation part is located outside the mounting hole, and the part, used for abutting against the shaft body, in the deformation part is located outside the mounting hole. According to the technical scheme, the requirement for the machining precision of the shaft body sleeve piece is lowered, the shaft body sleeve piece can operate normally, and using noise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tufting technology, and in particular to a bushing, a shaft assembly, and a tufting device. Background Technology

[0002] Currently, some tufting equipment incorporates a shaft assembly, where the tufting needle is connected to the shaft assembly. This allows the tufting needle to slide, and a drive mechanism then propels the needle to insert the thread into the base fabric. In this type of shaft assembly, a bushing is fitted around the outer circumference of the shaft, allowing the bushing to slide axially relative to the shaft. However, this requires high precision in the machining of both the shaft and bushing, and a clearance fit between them can easily generate alternating impacts and noise. Furthermore, an interference fit can cause the shaft and bushing to seize up and malfunction. Utility Model Content

[0003] This utility model provides a bushing, a shaft assembly, and a tufting device, which aims to reduce the machining accuracy requirements of the shaft assembly, enabling the shaft assembly to operate normally and reducing noise during use.

[0004] In a first aspect, this utility model embodiment provides a bushing, comprising:

[0005] A connecting portion, wherein the connecting portion is provided with mounting holes, the mounting holes penetrating both opposite sides of the connecting portion along a first direction, the mounting holes being for the shaft to pass through, and the radial dimension of the mounting holes being larger than the radial dimension of the shaft; and

[0006] A deformable part is connected to the connecting part, and the deformable part is flexible or elastic, and the deformable part is used to abut against the shaft.

[0007] Wherein, at least part of the deformable portion is located outside the mounting hole, and the portion of the deformable portion used to abut against the shaft is located outside the mounting hole.

[0008] Optionally, the deformable portion and the connecting portion are arranged along the first direction.

[0009] Optionally, the deformable part is connected to the wall of the mounting hole; or, the deformable part is connected to one end of the connecting part along the first direction.

[0010] Optionally, the bushing can slide relative to the shaft.

[0011] Optionally, the deformable portion forms a through space communicating with the mounting hole, and the minimum dimension of the through space along a cross section perpendicular to the first direction is smaller than the radial dimension of the mounting hole.

[0012] Optionally, the deformable part includes a plurality of elastic arms, which are circumferentially connected to the connecting part along the mounting hole, and the plurality of elastic arms enclose the through space.

[0013] Optionally, the connecting portion and the deformable portion are integrally formed.

[0014] Optionally, the outer periphery of the connecting portion and / or the deformable portion is provided with a limiting boss, which is used to abut against a predetermined component.

[0015] Secondly, this utility model embodiment provides a shaft assembly, comprising:

[0016] Shaft; and

[0017] As described in the first aspect, the bushing is movable relative to the shaft.

[0018] Thirdly, this utility model embodiment provides a tufting device, comprising:

[0019] Drive mechanism;

[0020] A movable component, wherein the drive mechanism is pulsatingly connected to the movable component, the movable component including: a tufting component, a cutting component, or other movable parts of a tufting device; and

[0021] The shaft assembly as described in the second aspect is used to guide the movement of the moving part.

[0022] The bushing, shaft assembly, and tufting device provided in this embodiment of the utility model have a mounting hole at the connecting part of the bushing, which extends along a first direction, allowing the shaft to pass through the mounting hole. By allowing the shaft to pass through the mounting hole of the connecting part, with the radial dimension of the mounting hole being larger than the radial dimension of the shaft, and by having a flexible or elastic deformable part connected to the connecting part, the deformable part can maintain contact with the shaft under its own flexible or elastic force. This allows for a floating allowance between the bushing and the shaft, reducing the machining accuracy requirements of the shaft assembly. Furthermore, it helps reduce the probability of noise caused by alternating impacts during the reciprocating motion of the bushing relative to the shaft, and also reduces the resistance changes during the movement of the bushing relative to the shaft, resulting in a wider applicable temperature range for the shaft assembly. The portion of the deformable part that abuts the shaft is located outside the mounting hole, allowing for a wider deformation space in this portion, thus ensuring that the floating allowance between the bushing and the shaft meets the usage requirements. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of a shaft assembly provided in an embodiment of this utility model;

[0025] Figure 2 A front view of a shaft assembly provided in an embodiment of this utility model;

[0026] Figure 3 for Figure 2 A cross-sectional view of the shaft assembly along the AA direction;

[0027] Figure 4 A schematic diagram of the structure of a bushing from one perspective is provided for an embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of a bushing from another perspective, provided as an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the structure of a tufting device provided in an embodiment of the present utility model.

[0030] Explanation of key figure labels:

[0031] 10. Bushing; 1. Connecting part; 101. Mounting hole; 2. Deformation part; 201. Through-hole; 21. Spring arm; 3. Limiting boss; 301. Groove; 20. Shaft body;

[0032] 100, First shaft assembly; 200, Tufted part; 300, Second shaft assembly; 400, Counterweight; 500, Cutting part; 600, Drive mechanism. Detailed Implementation

[0033] As described in the background section of this application, to achieve motion stability, extremely stringent requirements are placed on the positional accuracy, positioning accuracy, parallelism, and runout of the sliding contact surfaces of the parts in the shaft assembly. This results in high machining accuracy requirements for the shaft and bushing, and necessitates fine-tuning of the shaft and bushing to meet usage requirements. Furthermore, the shaft and bushing have different coefficients of thermal expansion, leading to the following states between them: a clearance fit between the shaft and bushing causes alternating impacts and noise; an overfit or interference fit increases the motion resistance between the shaft and bushing, or even causes them to seize up, preventing normal operation.

[0034] To address the aforementioned issues, this application provides a bushing. When applied to a shaft assembly, the bushing allows the shaft to pass through a mounting hole in the connecting portion, with the radial dimension of the mounting hole larger than the radial dimension of the shaft. Furthermore, the deformable portion connected to the connecting portion is flexible or elastic. This deformable portion maintains contact with the shaft under its own flexible or elastic force, allowing for a floating margin between the bushing and the shaft. This reduces the requirements for positional accuracy, positioning accuracy, parallelism, and runout of the sliding contact surface in the shaft assembly. It also reduces the probability of noise caused by alternating impacts during the reciprocating motion of the bushing relative to the shaft due to the expansion coefficient, and reduces changes in motion resistance caused by the expansion coefficient, resulting in a wider applicable temperature range for the shaft assembly. The portion of the deformable portion that abuts the shaft is located outside the mounting hole, providing a wider deformation space for this portion, ensuring that the floating margin between the bushing and the shaft meets usage requirements.

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1 to 5 This utility model provides a bushing 10, which includes a connecting portion 1 and a deformable portion 2. The connecting portion 1 has a mounting hole 101 that extends through both opposite sides of the connecting portion 1 along a first direction. The mounting hole 101 is used for a shaft body 20 to pass through, and the radial dimension of the mounting hole 101 is larger than the radial dimension of the shaft body 20. The deformable portion 2 is connected to the connecting portion 1 and is flexible or elastic. The deformable portion 2 is used to abut against the shaft body 20. At least part of the deformable portion 2 is located outside the mounting hole 101, and the portion of the deformable portion 2 that abuts against the shaft body 20 is located outside the mounting hole 101.

[0037] Understandably, the connecting part 1 of the bushing 10 is provided with a mounting hole 101, which extends along a first direction, and the shaft 20 can pass through the mounting hole 101. By passing the shaft 20 through the mounting hole 101 of the connecting part 1, and making the radial dimension of the mounting hole 101 larger than the radial dimension of the shaft 20, and by making the deformable part 2 connected to the connecting part 1 flexible or elastic, the deformable part 2 can maintain contact with the shaft 20 under its own flexible or elastic force, thereby leaving a floating margin between the bushing 10 and the shaft 20. This reduces the requirements for the positional accuracy, positioning accuracy, parallelism, and runout of the sliding contact surface of the shaft assembly, which also reduces the requirements for the machining accuracy of the shaft assembly. In addition, it also helps to reduce the probability of noise caused by alternating impacts during the reciprocating motion of the bushing 10 relative to the shaft 20 due to the expansion coefficient, and reduces the change in motion resistance caused by the expansion coefficient, making the applicable temperature range of the shaft assembly wider. The portion of the deformable part 2 that abuts against the shaft body 20 is located outside the mounting hole 101, so that the portion of the deformable part 2 that abuts against the shaft body 20 has a wider deformation space, thereby ensuring that the floating allowance between the bushing 10 and the shaft body 20 can meet the usage requirements.

[0038] For example, the first direction can be as follows Figure 3 The S0-S1 direction is shown in the diagram.

[0039] In this embodiment, the bushing 10 can slide relative to the shaft 20. The mounting hole 101 extends along a first direction, and the shaft 20 passes through the mounting hole 101. The bushing 10 can slide relative to the shaft 20 along the first direction, and the axial direction of the shaft 20 can be the first direction.

[0040] For example, the movable part of the tufting device can be connected to the connecting part 1 of the bushing 10, and the shaft 20 passes through the mounting hole 101 of the bushing 10. The movable part and the bushing 10 can slide relative to the shaft 20 in a first direction to realize the sliding connection of the movable part.

[0041] For example, the shaft 20 may be as follows: Figure 1 The circular shaft shown can also be an elliptical shaft or a square shaft. The mounting hole 101 of the bushing 10 can be a circular hole, an elliptical hole, or a square hole that matches the shaft body 20, such that the radial dimension of the mounting hole 101 of the bushing 10 is larger than the radial dimension of the shaft body 20, so that the shaft body 20 can pass through the mounting hole 101 of the bushing 10, and the bushing 10 can slide relative to the shaft body 20.

[0042] In some embodiments, the bushing 10 is rotatable about the shaft 20. The mounting hole 101 extends along a first direction, and the shaft 20 passes through the mounting hole 101. The bushing 10 is rotatable relative to the shaft 20 about the first direction, and the axial direction of the shaft 20 may be the first direction.

[0043] In some embodiments, the bushing 10 can slide relative to the shaft 20 while rotating around the shaft 20. The mounting hole 101 extends along a first direction, and the shaft 20 passes through the mounting hole 101. The bushing 10 can slide relative to the shaft 20 along the first direction while rotating around the first direction. The axial direction of the shaft 20 can be the first direction.

[0044] Understandably, the radial dimension of the mounting hole 101 is larger than the radial dimension of the shaft 20, so that when the shaft 20 passes through the mounting hole 101, at least part of the wall surface of the mounting hole 101 can be spaced apart from the shaft 20. Specifically, the difference between the radial dimension of the mounting hole 101 and the radial dimension of the shaft 20 can be adjusted according to actual needs, and is not limited here.

[0045] Optionally, the deformable part 2 may contact one or more parts of the shaft 20.

[0046] For example, the projection of the deformable part 2 on a plane perpendicular to the first direction at least partially coincides with the projection of the mounting hole 101 on the same plane, so that when the shaft 20 passes through the mounting hole 101, the deformable part 2 moves closer to the shaft 20 and can abut against the shaft 20.

[0047] In some embodiments, the deformable portion 2 and the connecting portion 1 are arranged along a first direction so that the deformable portion 2 is at least partially located outside the mounting hole 101, so that the portion of the deformable portion 2 located outside the mounting hole 101 abuts against the shaft 20.

[0048] like Figure 3 As shown, in one optional embodiment, the deformable part 2 is connected to one end of the connecting part 1 along the first direction, so that the deformable part 2 is located outside the mounting hole 101. While realizing the connection between the deformable part 2 and the connecting part 1, the deformable part 2 has a wider deformation space to meet the usage requirements.

[0049] In another alternative embodiment, the deformable part 2 is connected to the wall of the mounting hole 101, and the deformable part 2 extends outward from the mounting hole 101 so that the deformable part 2 partially protrudes outward from the mounting hole 101.

[0050] Understandably, the connection position between the deformable part 2 and the connecting part 1 is quite flexible and can be set according to the actual situation.

[0051] like Figures 3 to 5As shown, in some embodiments, the deformable portion 2 forms a through-space 201 communicating with the mounting hole 101. The minimum dimension of the through-space 201 along the cross-section perpendicular to the first direction is smaller than the radial dimension of the mounting hole 101. It is understood that by forming the through-space 201 communicating with the mounting hole 101, the shaft 20 can pass through the through-space 201, allowing the deformable portion 2 to wrap around the outer periphery of the shaft 20. Furthermore, the minimum dimension of the through-space 201 along the interface perpendicular to the first direction is smaller than the radial dimension of the mounting hole 101, causing the deformable portion 2 to approach and abut against the shaft 20. This increases the contact area between the deformable portion 2 and the shaft 20, allowing the bushing 10 to have floating allowance relative to the shaft 20 in multiple directions. This is beneficial for further reducing the machining accuracy requirements of the shaft assembly and reducing the change in motion resistance caused by the coefficient of thermal expansion.

[0052] For example, such as Figure 3 As shown, the cross-sectional dimension of the through-space 201 along the direction perpendicular to S0-S1 gradually decreases from the S1 side to the S0 side. The cross-sectional dimension of the through-space 201 along the first direction is smaller than the radial dimension of the mounting hole 101. As a result, the projection of the through-space 201 on the plane perpendicular to the first direction falls within the projection range of the mounting hole 101 on the plane. This allows the deformable part 2 to abut against the shaft 20 when the shaft 20 passes through the through-space 201 and the mounting hole 101.

[0053] For example, the dimension of the cross-section of the through-space 201 along the direction perpendicular to S0-S1 can gradually decrease from the S1 side to the S0 side and then gradually increase, or the dimension of the cross-section of the through-space 201 along the direction perpendicular to S0-S1 can gradually increase from the S1 side to the S0 side and then gradually decrease, as long as the minimum dimension of the cross-section of the through-space 201 along the first direction is less than the radial dimension of the mounting hole 101. Specifically, the shape of the through-space 201 can be adjusted according to the actual situation, and is not limited here.

[0054] Optionally, the cross-section obtained by the wall of the penetrating space 201 from the plane parallel to the first direction can be an arc, or it can be as follows: Figure 3 The straight lines shown can be adjusted according to the actual situation, and are not limited here.

[0055] like Figures 3 to 5 As shown, in some embodiments, the deformable part 2 includes a plurality of spring arms 21, which are circumferentially spaced and connected to the connecting part 1 along the mounting hole 101. The plurality of spring arms 21 enclose a through space 201. It can be understood that the plurality of spring arms 21 are spaced apart on the outer periphery of the shaft 20 and abut against the shaft 20. The plurality of spring arms 21 can independently adapt to the surface precision of the shaft 20, making the relative movement of the bushing 10 and the shaft 20 more stable.

[0056] Understandably, there can be two or more spring arms 21, with multiple spring arms 21 abutting against multiple points around the shaft 20. Specifically, each spring arm 21 can abut against one or more points on the shaft 20.

[0057] For example, such as Figure 3 As shown, the deformable part 2 includes three spring arms 21. The three spring arms 21 are arranged circumferentially around the mounting hole 101, and one end of each spring arm 21 is connected to the connecting part 1. The other ends of each spring arm 21 are close to the middle of the three spring arms 21. The projection of the three spring arms 21 on the plane perpendicular to the S0-S1 direction coincides with the projection of the mounting hole 101 on the same plane. The through space 201 formed by the three spring arms 21 has a cross-sectional dimension perpendicular to the first direction that is smaller than the radial dimension of the mounting hole 101, so that the three spring arms 21 respectively abut against each other on the circumference of the shaft 20.

[0058] In some embodiments, multiple spring arms 21 are arc-shaped to increase the contact area between the spring arms 21 and the shaft 20, making the movement of the bushing 10 relative to the shaft 20 more stable.

[0059] In some embodiments, multiple spring arms 21 are evenly arranged, which helps to make the bushing 10 more stable when moving relative to the shaft 20.

[0060] Of course, in other embodiments, the deformable part 2 may include only one spring arm 21, one end of which is connected to the connecting part 1. The projection of the spring arm 21 on the plane perpendicular to the first direction coincides at least partially with the projection of the mounting hole 101 on the same plane, so that when the shaft 20 passes through the mounting hole 101, the spring arm 21 at least partially approaches the shaft 20 and can abut against the shaft 20.

[0061] In some embodiments, the connecting part 1 and the deformable part 2 are integrally formed, thereby simplifying the manufacturing process of the bushing 10 and improving the connection strength between the deformable part 2 and the connecting part 1.

[0062] For example, the structure of the deformable part 2 can be designed so that after the connecting part 1 and the deformable part 2 are integrally formed, the deformable part 2 has the ability to deform. For example, the deformable part 2 includes a plurality of elastic arms 21, one end of which is connected to the connecting part 1 and the other end is free, so that the elastic arm 21 is a cantilever structure, thereby enabling the deformable part 2 to have the ability to deform.

[0063] For example, the connecting part 1 and the deformable part 2 can be integrally formed using different materials, thereby enabling the deformable part 2 to have deformability.

[0064] like Figures 3 to 5As shown, in some embodiments, the outer periphery of the connecting part 1 and / or the deformable part 2 is provided with a limiting boss 3, which is used to abut against the predetermined component to realize the positioning of the predetermined component. Specifically, the predetermined component is connected to the bushing 10, so that the predetermined component and the bushing 10 can move relative to the shaft 20 to realize the movable connection of the predetermined component. At the same time, the predetermined component can abut against the limiting boss 3 to realize the positioning of the predetermined component relative to the bushing 10.

[0065] For example, the predetermined component includes a movable part of the tufting device, which may include a tufting component, a cutting component, or other movable parts.

[0066] Understandably, the position of the limiting boss 3 is quite flexible and can be adjusted according to the actual situation, so no limitation is made here.

[0067] Furthermore, the limiting boss 3 is provided on the part of the deformable part 2 located outside the mounting hole 101, and the limiting boss 3 has a groove 301 on the side facing the connecting part 1 so that the deformable part 2 can deform to adapt to the surface of the shaft 20.

[0068] For example, the deformable part 2 includes a plurality of spring arms 21, and each of the plurality of spring arms 21 is provided with a limiting boss 3 on its outer periphery. The plurality of limiting bosses 3 are spaced apart along the circumferential direction of the mounting hole 101, so that the plurality of limiting bosses 3 can respectively abut against multiple parts of the predetermined component.

[0069] like Figures 1 to 3 As shown, in a second aspect, this utility model embodiment provides a shaft assembly, which includes a shaft 20 and a bushing 10 as described in any of the preceding embodiments, wherein the bushing 10 is movable relative to the shaft 20. It is understood that the shaft assembly with the bushing 10 described above allows for a floating margin between the bushing 10 and the shaft 20, reducing the requirements for the shaft assembly's positional accuracy, positioning accuracy, parallelism, and runout of the sliding contact surface, thus reducing the machining accuracy requirements for the shaft assembly. Furthermore, it helps reduce the probability of noise caused by alternating impacts during the reciprocating motion of the bushing 10 relative to the shaft 20 due to the coefficient of thermal expansion, and also reduces the change in motion resistance caused by the coefficient of thermal expansion, resulting in a wider applicable temperature range for the shaft assembly.

[0070] In some embodiments, the bushing 10 is slidable relative to the shaft 20. The mounting hole 101 extends along a first direction, and the shaft 20 passes through the mounting hole 101. The bushing 10 is slidable relative to the shaft 20 along the first direction, and the axial direction of the shaft 20 may be the first direction.

[0071] In some embodiments, the bushing 10 is rotatable about the shaft 20. The mounting hole 101 extends along a first direction, and the shaft 20 passes through the mounting hole 101. The bushing 10 is rotatable relative to the shaft 20 about the first direction, and the axial direction of the shaft 20 may be the first direction.

[0072] In some embodiments, the bushing 10 can slide relative to the shaft 20 while rotating around the shaft 20. The mounting hole 101 extends along a first direction, and the shaft 20 passes through the mounting hole 101. The bushing 10 can slide relative to the shaft 20 along the first direction while rotating around the first direction. The axial direction of the shaft 20 can be the first direction.

[0073] In some embodiments, there are two bushings 10, which are spaced apart in a first direction. The predetermined component is at least partially located between the two bushings 10, and the connecting portions 1 of the two bushings 10 both face and are connected to the predetermined component. The movable connection of the predetermined component via two bushings 10 helps to ensure the movement stability of the predetermined component.

[0074] For example, the predetermined component includes a movable part of the tufting device, which may include a tufting component, a cutting component, or other movable parts.

[0075] For example, the predetermined component is provided with a through hole, the radial dimension of which is greater than the radial dimension of the shaft 20, and the shaft 20 can be inserted into the predetermined component.

[0076] For example, the connecting part 1 of the two bushings 10 can extend into the through hole from both ends of the through hole, and the bushing 10 and the predetermined component can be connected by snap-fit, glue, fastening or other means.

[0077] like Figure 6 As shown, in a third aspect, this utility model embodiment also provides a tufting device, which includes a drive mechanism 600, a movable component, and a shaft assembly as described in any of the preceding embodiments. The drive mechanism 600 is connected to the movable component, which includes: a tufting component 200, a cutting component 500, or other movable parts of the tufting device. The shaft assembly is used to guide the movement of the movable component. It is understood that the shaft assembly with the aforementioned bushing 10 allows for a floating margin between the bushing 10 and the shaft 20, reducing the requirements for the positional accuracy, positioning accuracy, parallelism, and runout of the sliding contact surface of the shaft assembly, i.e., reducing the requirements for the machining accuracy of the shaft assembly. In addition, it is beneficial to reduce the probability of noise caused by alternating impacts during the reciprocating motion of the bushing 10 relative to the shaft 20 due to the expansion coefficient, and to reduce the change in motion resistance caused by the expansion coefficient, thus making the shaft assembly applicable to a wider temperature range.

[0078] In some embodiments, the tufting device includes a first shaft assembly 100, which is a shaft assembly as described in any of the preceding embodiments. The movable component includes a tufting element 200, which is connected to a bushing 10 and is drive-connected to a drive mechanism 600. The drive mechanism 600 can drive the tufting element 200 and the bushing 10 to slide relative to the shaft 20 in a first direction. The axial direction of the shaft 20 can be the first direction, so that the tufting element 200 can insert threads into the base fabric.

[0079] For example, the tufting component 200 includes a transmission part and a tufting part. The tufting part is provided with a threading hole and is connected to the transmission part. The transmission part is located between two bushings 10 and is provided with a through hole. The shaft body 20 passes through the mounting holes 101 of the two bushings 10 and the through hole of the transmission part, and the connecting part of the two bushings 10 can extend into the through hole of the transmission part to realize the connection between the connecting part and the transmission part.

[0080] For example, the opposite sides of the transmission part can respectively abut against the limiting bosses of the two bushings 10 to realize the positioning of the bushings 10 and the tufted part 200.

[0081] In some embodiments, the tufting device includes a second shaft assembly 300, which is a shaft assembly as described in any of the preceding embodiments. A movable component includes a counterweight 400 connected to the bushing 10. The tufting equipment also includes a tufting component 200 and a cutting component 500. The transmission wheels of the tufting component 200 and the cutting component 500 are connected to the drive mechanism 600. The cutting component 500 is located between the tufting component 200 and the counterweight 400. The counterweight 400 is connected to the bushing 10 and is driven by the drive mechanism 600 or the tufting component 200. The counterweight 400 and the bushing 10 can slide relative to the shaft 20 under the drive of the drive mechanism 600 or the tufting component 200. The counterweight 400 and the tufting component 200 move to the same side, while the cutting component 500 moves away from the counterweight 400 and the tufting component 200. This ensures that the center of gravity of the tufting component 200, the cutting component 500 and the counterweight 400 is balanced when they move, thus offsetting or reducing the rotational torque and ensuring the stability of the tufting equipment.

[0082] For example, the connection method between the counterweight 400 and the shaft assembly can be referred to the connection method between the transmission part of the tufted part 200 and the shaft assembly mentioned above, and will not be repeated here.

[0083] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bushing, characterized by, The bushing includes: A connecting portion, wherein the connecting portion is provided with mounting holes, the mounting holes penetrating both opposite sides of the connecting portion along a first direction, the mounting holes being for the shaft to pass through, and the radial dimension of the mounting holes being larger than the radial dimension of the shaft; and A deformable part is connected to the connecting part, and the deformable part is flexible or elastic, and the deformable part is used to abut against the shaft. Wherein, at least part of the deformable portion is located outside the mounting hole, and the portion of the deformable portion used to abut against the shaft is located outside the mounting hole.

2. The bushing of claim 1, wherein, The deformable portion and the connecting portion are arranged along the first direction.

3. The bushing of claim 2, wherein, The deformable part is connected to the wall of the mounting hole; or, the deformable part is connected to one end of the connecting part along the first direction.

4. The bushing of claim 1, wherein, The bushing is capable of sliding relative to the shaft.

5. The bushing of claim 1, wherein, The deformable portion forms a through space communicating with the mounting hole, and the minimum dimension of the through space along the cross section perpendicular to the first direction is smaller than the radial dimension of the mounting hole.

6. The bushing according to claim 5, characterized in that, The deformable part includes multiple elastic arms, which are circumferentially connected to the connecting part along the mounting hole, and the multiple elastic arms enclose the through space.

7. The bushing of any of claims 1-6, wherein, The connecting part and the deformable part are integrally formed.

8. The bushing of any of claims 1-6, wherein, The outer periphery of the connecting part and / or the deformable part is provided with a limiting boss, which is used to abut against a predetermined component.

9. A shaft sleeve kit characterized by, include: Shaft body; as well as The bushing as described in any one of claims 1-8, wherein the bushing is movable relative to the shaft.

10. A tufting apparatus characterized by, include: Drive mechanism; The movable component is connected to the driving mechanism in a transmission manner. The movable component includes: a tufting component, a cutting component, or other movable parts of a tufting device. as well as The shaft assembly as described in claim 9 is used to guide the movement of the moving part.

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