CN219322208U

CN219322208U - Transmission structure and flocking machine

Info

Publication number: CN219322208U
Application number: CN202223448520.8U
Authority: CN
Inventors: 卢旭
Original assignee: Lens Intelligent Robot Changsha Co Ltd
Current assignee: Lens Intelligent Robot Changsha Co Ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-07-07
Anticipated expiration: 2032-12-16

Abstract

The utility model provides a transmission structure and a hair planting machine, and relates to the field of power transmission. The transmission structure comprises a rotation assembly, a switching connecting rod assembly and a linear reciprocating assembly; the rotating assembly is provided with a rotating input end and an output end; the linear reciprocating assembly comprises a first connecting piece, an elastic piece and a second connecting piece, wherein the first connecting piece is connected with the output end through the switching connecting rod assembly and is connected with the second connecting piece through the elastic piece, and the second connecting piece comprises a pushing part. The rotary input end of the rotary assembly is driven by the driving motor to rotate, and the output end drives the first connecting piece to reciprocate and translate. The first connecting piece drives the second connecting piece to move through the elastic piece, and then the pushing part in the second connecting piece drives the wire pushing shaft to move. When the movement of the wire pushing shaft is blocked, the reaction force born by the shaft of the driving motor and the pressure born by the wire pushing shaft are only elastic force on the elastic piece, so that the driving motor is prevented from being blocked and burnt, and the wire pushing shaft is prevented from being damaged due to overlarge pressure.

Description

Transmission structure and flocking machine

Technical Field

The utility model relates to the field of power transmission, in particular to a transmission structure and a hair planting machine.

Background

When the brush plate is planted by the hair planting machine, the cut and shaped iron wires need to be pushed into the cavity by the wire pushing shaft for the next hair planting process.

The existing wire pushing shaft is mostly driven by a motor, and an output shaft of the motor is connected with the wire pushing shaft through a transmission structure. The transmission structure can convert the rotary motion output by the motor into linear reciprocating motion, and then drives the wire pushing shaft to move back and forth.

However, when the wire is blocked, the motor still continuously drives the wire pushing shaft to move, so that the motor is blocked and burnt easily, or the wire pushing shaft is damaged due to overlarge pressure.

Disclosure of Invention

In order to solve the problems that in the prior art, when the movement of a wire pushing shaft is blocked, a motor still continuously drives the wire pushing shaft to move, and the motor is easy to be blocked and burnt, or the wire pushing shaft is damaged due to overlarge pressure, one of the purposes of the utility model is to provide a transmission structure.

The utility model provides the following technical scheme:

a transmission structure comprises a rotating assembly, an adapter connecting rod assembly and a linear reciprocating assembly;

the rotating assembly has a rotating input and an output;

the linear reciprocating assembly comprises a first connecting piece, an elastic piece and a second connecting piece, wherein the first connecting piece is connected with the output end through the switching connecting rod assembly, the first connecting piece is connected with the second connecting piece through the elastic piece, and the second connecting piece comprises a pushing part.

As a further alternative to the transmission structure, the linear reciprocating assembly further includes a ranging sensor fixedly connected with the first connecting member or the second connecting member.

As a further alternative to the transmission structure, the second connecting piece further includes a connecting portion and a first guiding portion, where the first guiding portion connects the pushing portion and the connecting portion, respectively;

the first connecting piece is connected with the connecting part through the elastic piece, and the first connecting piece is in sliding fit with the first guiding part.

As a further alternative to the transmission structure, the linear reciprocating assembly further includes a fixing member and a second guide member, the second guide member is fixedly connected with the fixing member, the second guide member is parallel to the first guide portion, and the connection portion is in sliding fit with the second guide member.

As a further alternative to the transmission structure, the first connecting member includes a first limiting portion, and the first limiting portion abuts against the second connecting member, so that the elastic member has a preset elastic force.

As a further alternative to the transmission structure, the rotating assembly includes a support base, a cam shaft, an inner groove cam, and a crank;

the cam rotating shaft is rotatably arranged on the supporting seat, one end of the cam rotating shaft is the rotating input end, and the other end of the cam rotating shaft is connected with the inner groove cam;

the crank is rotationally arranged on the supporting seat, the crank rotates around the direction parallel to the axis of the cam rotating shaft, the crank is provided with a cam follower shaft matched with the inner groove cam, and the crank is provided with the output end.

As a further alternative to the transmission structure, the transfer link assembly includes a rotation shaft, a first swing arm, a second swing arm, and a link;

the axial direction of the rotating shaft is perpendicular to the axial direction of the cam rotating shaft or the moving direction of the pushing part, and the first rotating arm and the second rotating arm are fixedly connected with the rotating shaft;

the connecting rod with the first radial arm links to each other, the connecting rod along the length direction of first radial arm with first radial arm sliding fit, first connecting piece with the second radial arm links to each other, first connecting piece along the length direction of second radial arm with second radial arm sliding fit.

As a further alternative to the transmission structure, the axial direction of the cam shaft is parallel to the moving direction of the pushing portion, and the first radial arm is perpendicular to the second radial arm.

As a further alternative to the transmission structure, the first connecting member further includes a rotating portion that rotates around a direction parallel to the axis of the rotation shaft, and the rotating portion is connected to the second swing arm and is in sliding fit with the second swing arm.

It is another object of the present utility model to provide a tufting machine.

The utility model provides the following technical scheme:

a hair planter comprises the transmission structure.

The embodiment of the utility model has the following beneficial effects:

when the rotary connecting rod assembly is used, the rotary input end of the rotary assembly is connected with the driving motor, the rotary connecting rod assembly is driven by the driving motor to rotate, and the output end of the rotary assembly drives the first connecting piece to reciprocate and translate through the switching connecting rod assembly. The first connecting piece drives the second connecting piece to move through the elastic piece, and then a pushing part in the second connecting piece drives the wire pushing shaft to move, so that the wire pushing action is completed.

When the movement of the wire pushing shaft is blocked, the second connecting piece including the pushing part is limited by the wire pushing shaft and cannot move. Because the first connecting piece is connected with the second connecting piece through the elastic piece, the first connecting piece and the second connecting piece can move relatively. At this time, the shaft of the driving motor is in soft contact with the wire pushing shaft, and the reaction force born by the shaft of the driving motor and the pressure born by the wire pushing shaft are only elastic force on the elastic piece, so that the driving motor is prevented from being blocked and burnt, and the wire pushing shaft is prevented from being damaged due to overlarge pressure.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows an overall structural schematic diagram of a transmission structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a rotating assembly in a transmission structure according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a rotary assembly in a transmission structure according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram showing the fit relationship between an inner groove cam and a crank in a transmission structure according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a transfer link assembly in a transmission structure according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a linear reciprocating assembly in a transmission structure according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a linear reciprocating assembly in a transmission structure according to an embodiment of the present utility model at another view angle;

fig. 8 is a schematic view of a part of a linear reciprocating assembly in a transmission structure according to an embodiment of the present utility model.

Description of main reference numerals:

a 100-rotation assembly; 110-a supporting seat; 111-crank fulcrum; 120-cam shaft; 121-a rotary input; 130-an inner groove cam; 131-cam groove; 140-crank; 141-a cam follower shaft; 142-an output; 200-an adapter link assembly; 210-a support; 220-a rotation axis; 230-first radial arm; 240-second radial arm; 250-connecting rod; 251-a first fisheye junction; 252-a second fisheye junction; 300-a linear reciprocating assembly; 310-a first connector; 311-connection a piece body; 312-a rotating part; 313-a first stop; 320-an elastic member; 330-a second connector; 331-pushing part; 332-connection part; 333-first guide; 333 a-pushrod; 333 b-connecting plates; 334-a second limit portion; 340-a fixing piece; 350-a second guide; 360-distance measuring sensor.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Examples

Referring to fig. 1, the present embodiment provides a transmission structure, specifically a transmission structure for converting rotary motion into linear reciprocating motion, which is applied to a hair planting machine. The transmission structure includes a rotating assembly 100, an adapter link assembly 200, and a linear reciprocating assembly 300, which are sequentially connected.

The rotating assembly 100 is used for being connected with a driving motor in the hair planting machine, and the rotating motion is input from the rotating assembly 100. The linear reciprocating assembly 300 is used for connecting a wire pushing shaft in the hair planting machine, and linear reciprocating motion is output from the linear reciprocating assembly 300. The transfer link assembly 200 is disposed between the rotary assembly 100 and the linear reciprocating assembly 300 to adjust the movement direction.

Referring to fig. 2 and 3, in particular, in some embodiments, the rotating assembly 100 is composed of a support base 110, a cam shaft 120, an inner groove cam 130, and a crank 140.

Wherein, the supporting seat 110 is fixedly connected with the frame of the hair planting machine.

The cam shaft 120 is rotatably disposed on the support base 110, one end of the cam shaft 120 is connected to an output shaft of the driving motor, and the other end of the cam shaft 120 is fixedly connected to the inner groove cam 130 as a rotation input end 121.

The support base 110 is provided with a crank shaft 111, and the axis of the crank shaft 111 is parallel to the axis of the cam shaft 120. One end of the crank 140 is sleeved on the crank support shaft 111 through a bearing, and is further rotatably connected with the support seat 110, and the other end of the crank 140 serves as an output end 142.

Referring to fig. 4, in addition, a cam follower shaft 141 is provided on the crank 140. The cam follower shaft 141 is fitted into the cam groove 131 of the inner groove cam 130, and slidably engaged with the cam groove 131.

In use, the drive motor drives the cam shaft 120 to rotate, which in turn drives the inner groove cam 130 to rotate. The cam follower shaft 141 undulates within the cam groove 131 as the inner groove cam 130 rotates, such that the output end 142 on the crank 140 oscillates back and forth in an arc, and the magnitude of the oscillation range is determined by the stroke of the inner groove cam 130, the length of the crank 140, and the position of the cam follower shaft 141 on the crank 140.

Alternatively, the axis of the cam shaft 120 is horizontal and the output 142 on the crank 140 swings up and down in an arc.

In other embodiments, the rotating assembly 100 may also be comprised of a reciprocating screw and nut mount. The reciprocating screw rod is connected with a shaft of the driving motor, and is driven by the driving motor to rotate, so that the screw seat moves back and forth.

Referring to fig. 4 and 5 together, specifically, one end of the connecting rod assembly 200 is connected to the output end 142 of the crank 140, and the other end of the connecting rod assembly 200 is connected to the first connecting member 310 (see fig. 6) of the linear reciprocating assembly 300. When the output end 142 of the crank 140 swings back and forth along an arc, the first connecting piece 310 is driven to do linear reciprocating motion by the adapting connecting rod assembly 200.

Referring to fig. 5, in some embodiments, the transfer link assembly 200 is comprised of a support 210, a rotation shaft 220, a first radial arm 230, a second radial arm 240, and a link 250.

Wherein, the support 210 is fixedly connected with the frame of the hair planting machine. The rotation shaft 220 is rotatably provided on the support 210 through a bearing, and an axial direction of the rotation shaft 220 is perpendicular to both an axial direction of the cam shaft 120 and a moving direction of the first link 310.

The first radial arm 230 and the second radial arm 240 are perpendicular to the rotation shaft 220 and are fixedly connected to the rotation shaft 220.

One end of the connecting rod 250 is connected with the output end 142 on the crank 140 through a first fisheye joint 251, the other end of the connecting rod 250 is connected with the first radial arm 230 through a second fisheye joint 252, and the connecting rod 250 is in sliding fit with the first radial arm 230 along the length direction of the first radial arm 230.

Similarly, the first connector 310 is coupled to the second arm 240, and the first connector 310 is slidably engaged with the second arm 240 along the length of the second arm 240.

When the output end 142 of the crank 140 swings back and forth along an arc, the connecting rod 250 moves along with the swing, and the rotation shaft 220 is driven to rotate by the first radial arm 230. The second rotating arm 240 rotates along with the rotating shaft 220, and further drives the first connecting member 310 to perform a linear reciprocating motion.

In this process, the distance between the connecting rod 250 and the rotating shaft 220 and the distance between the first connecting piece 310 and the rotating shaft 220 are changed, and the connecting rod 250 and the first radial arm 230 slide relatively, and the first connecting piece 310 and the second radial arm 240 slide relatively, so as to avoid locking.

In some embodiments, the axial direction of the cam shaft 120 and the movement direction of the first link 310 are parallel to each other. Accordingly, the first radial arm 230 is perpendicular to the second radial arm 240.

When the axial direction of the cam shaft 120 changes, the movement direction of the first connecting member 310 is consistent with the preset direction only by correspondingly adjusting the included angle between the first radial arm 230 and the second radial arm 240.

In some embodiments, the length of the first radial arm 230 is equal to the length of the second radial arm 240 such that displacement of the first radial arm 230 can be translated into displacement of the second radial arm 240 in a 1:1 ratio.

Referring to fig. 8, further, the first connecting member 310 includes a connecting member body 311, a rotating shaft fixedly connected to the connecting member body 311, and a bearing rotatably sleeved on the rotating shaft. The rotating shaft is parallel to the rotating shaft 220, the bearing is connected with the second radial arm 240 as a rotating part 312, and is in sliding fit with the second radial arm 240 along the length direction of the second radial arm 240, and the second radial arm 240 is correspondingly provided with a sliding groove.

When the second arm 240 rotates, the rotating portion 312 drives the whole first connecting member 310 to reciprocate linearly. In this process, the rotating portion 312 can reduce friction.

Referring to fig. 6 and 7 together, in particular, the linear reciprocating assembly 300 includes a first link 310, an elastic member 320, a second link 330, a fixing member 340 and a second guide member 350.

Referring to fig. 8, the connector body 311 of the first connector 310 is connected to the second connector 330 through the elastic member 320, and drives the second connector 330 to move in the same direction through the elastic member 320, and the second connector 330 is guided by the second guide member 350 when moving.

Referring to fig. 6 and 7, the fixing member 340 is a fixing plate, and the fixing member 340 is fixedly connected to the frame of the hair planting machine. In addition, the support 210 in the adapting link assembly 200 is bolted and fixed on the fixing piece 340, and is further fixedly connected with the frame of the hair planting machine through the fixing piece 340.

The second guide 350 employs a guide rod, and an axial direction of the second guide 350 is parallel to a moving direction of the first link 310. One end of the second guide member 350 is fixedly connected with the fixing member 340, and the other end of the second guide member 350 is slidably engaged with the second connecting member 330 through a linear bearing, so as to guide the second connecting member 330 when moving.

In some embodiments, the second guides 350 are provided in pairs to make the movement of the second link 330 smoother.

Referring to fig. 7 and 8, further, the second connecting member 330 includes a pushing portion 331, a connecting portion 332 and a first guiding portion 333, and the first guiding portion 333 is connected to the pushing portion 331 and the connecting portion 332 respectively.

Wherein, the connector body 311 is connected to the connecting portion 332 through the elastic member 320, and the connector body 311 is slidably engaged with the first guiding portion 333. Further, the second guide 350 is slidably fitted with the connecting portion 332 by a linear bearing.

In some embodiments, one end of the first guiding portion 333 is fixedly connected to the connecting portion 332, and the other end of the first guiding portion 333 is fixedly connected to the pushing portion 331, and the pushing portion 331 is further fixedly connected to the wire pushing shaft of the hair planting machine. Further, the connector body 311 is located between the connecting portion 332 and the pushing portion 331, and slidably engaged with the first guide portion 333. Accordingly, the elastic member 320 is a tension spring.

The connector body 311 and the connector 332 remain relatively fixed in any other direction under the restriction of the first guide 333.

When the first connecting piece 310 is driven by the second radial arm 240 to perform linear reciprocating motion, the connecting piece body 311 pulls the connecting portion 332 to perform linear reciprocating motion through the elastic piece 320, and further drives the wire pushing shaft to perform linear reciprocating motion through the first guiding portion 333 and the pushing portion 331, so as to complete the wire pushing motion.

When the movement of the push wire shaft is blocked, the push portion 331 is restricted by the push wire shaft and cannot move. Since the connector body 311 is connected to the connection portion 332 through the elastic member 320, a relative movement between the connector body 311 and the connection portion 332 can occur. At this time, the shaft of the driving motor is in soft contact with the wire pushing shaft, and the reaction force borne by the shaft of the driving motor and the pressure borne by the wire pushing shaft are only elastic force on the elastic piece 320, so that the driving motor is prevented from being blocked and burnt, and the wire pushing shaft is prevented from being damaged due to overlarge pressure.

In other embodiments, the connecting portion 332 may be fixed at the middle of the first guiding portion 333, the pushing portion 331 may be fixed at one end of the first guiding portion 333, and the connecting member body 311 may be slidably engaged with the other end of the first guiding portion 333. Accordingly, the elastic member 320 is a compression spring.

In some embodiments, the first guide 333 includes two push rods 333a and one connecting plate 333b. Wherein, both pushing rods 333a are disposed parallel to the second guiding element 350 and slidably penetrate through the connector body 311 and the fixing element 340. One end of the two pushing rods 333a is fixedly connected with the connecting part 332, and the other end is fixedly connected with the connecting plate 333b. Further, the connection plate 333b is fixedly connected to the pushing portion 331.

Further, the linear reciprocating assembly 300 further includes a ranging sensor 360, and the ranging sensor 360 is fixedly coupled with the first link 310 or the second link 330.

Optionally, the ranging sensor 360 employs a proximity switch.

In some embodiments, the ranging sensor 360 is fixedly disposed on the connector body 311 and passes through the connection portion 332.

When the wire pushing shaft works normally, the sensing end of the ranging sensor 360 always passes through the connecting part 332 to output a low-level signal. When the movement of the wire pushing shaft is blocked, the connector body 311 and the connecting portion 332 relatively move, and the ranging sensor 360 senses that the end is immersed in the connecting portion 332 and outputs a high-level signal, so that the movement of the wire pushing shaft is blocked.

On this basis, the distance measuring sensor 360 is electrically connected with a controller of the driving motor, so that the driving motor can be further controlled to stop.

In other embodiments, the ranging sensor 360 may be fixed to the second connecting member 330 and fixedly connected to the connecting portion 332. At this time, the ranging sensor 360 monitors the position of the connector body 311.

Further, the first connecting piece 310 further includes a first limiting portion 313 disposed on the connecting piece body 311, and the first limiting portion 313 abuts against the second connecting piece 330, so that the elastic piece 320 has a preset elastic force.

Taking the state that the connector body 311 is located between the connecting portion 332 and the pushing portion 331 as an example, the first limiting portion 313 abuts against the connecting portion 332 in the second connector 330, so that the elastic member 320 maintains the elongated state. When the connecting part 332 is pulled to move by the connecting part 311 through the elastic member 320, if the resistance force applied to the connecting part 332 is not greater than the preset elastic force on the elastic member 320, the elastic member 320 will not be deformed further, so as to realize synchronous movement between the connecting part 332 and the connecting part 311.

Alternatively, the first limiting portion 313 employs a limiting screw. The limit screw penetrates through the connector body 311 and is in threaded fit with the connector body 311. By screwing the limit screw, the elastic force on the elastic member 320 can be adjusted.

In some embodiments, the second connecting member 330 further includes a second limiting portion 334 disposed on the connecting portion 332, and the second limiting portion 334 abuts against the first limiting portion 313.

The embodiment also provides a hair planter, which comprises a driving motor, a wire pushing shaft and the transmission structure. Wherein, the shaft of the driving motor is connected with the cam rotating shaft 120 through a coupler, and the wire pushing shaft is fixedly connected with the pushing part 331.

In use, the drive motor drives the cam shaft 120 to rotate, inputting rotational motion. The output end 142 of the rotating assembly 100 swings up and down along an arc, and after the moving direction is changed by the switching connecting rod assembly 200, the first connecting piece 310 is driven to do linear reciprocating motion, and finally the wire pushing shaft is driven to complete the wire pushing motion.

Any particular values in all examples shown and described herein are to be construed as merely illustrative and not a limitation, and thus other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the present utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims

1. A transmission structure is characterized by comprising a rotating component (100), an adapting connecting rod component (200) and a linear reciprocating component (300);

the rotating assembly (100) has a rotational input (121) and an output (142);

the linear reciprocating assembly (300) comprises a first connecting piece (310), an elastic piece (320) and a second connecting piece (330), wherein the first connecting piece (310) is connected with the output end (142) through the switching connecting rod assembly (200), the first connecting piece (310) is connected with the second connecting piece (330) through the elastic piece (320), and the second connecting piece (330) comprises a pushing part (331).

2. The transmission structure according to claim 1, wherein the linear reciprocating assembly (300) further comprises a ranging sensor (360), the ranging sensor (360) being fixedly connected with the first connection member (310) or the second connection member (330).

3. The transmission structure according to claim 1, characterized in that the second connecting member (330) further comprises a connecting portion (332) and a first guiding portion (333), the first guiding portion (333) connecting the pushing portion (331) and the connecting portion (332), respectively;

the first connecting piece (310) is connected with the connecting part (332) through the elastic piece (320), and the first connecting piece (310) is in sliding fit with the first guiding part (333).

4. A transmission structure according to claim 3, wherein the linear reciprocating assembly (300) further comprises a fixing member (340) and a second guide member (350), the second guide member (350) being fixedly connected to the fixing member (340), the second guide member (350) being arranged parallel to the first guide portion (333), the second connecting member (330) being in sliding engagement with the second guide member (350).

5. The transmission structure according to claim 1, wherein the first connecting member (310) includes a first limiting portion (313), and the first limiting portion (313) abuts against the second connecting member (330) so that the elastic member (320) has a predetermined elastic force.

6. The transmission structure according to any one of claims 1 to 5, wherein the rotating assembly (100) comprises a support base (110), a cam shaft (120), an inner groove cam (130) and a crank (140);

the cam rotating shaft (120) is rotatably arranged on the supporting seat (110), one end of the cam rotating shaft (120) is the rotating input end (121), and the other end of the cam rotating shaft is connected with the inner groove cam (130);

the crank (140) is rotatably arranged on the supporting seat (110), the crank (140) rotates around a direction parallel to the axis of the cam rotating shaft (120), a cam follower shaft (141) matched with the inner groove cam (130) is arranged on the crank (140), and the crank (140) is provided with the output end (142).

7. The transmission structure of claim 6, wherein the transfer link assembly (200) includes a rotation shaft (220), a first radial arm (230), a second radial arm (240), and a link (250);

the axial direction of the rotating shaft (220) is perpendicular to the axial direction of the cam rotating shaft (120) or the moving direction of the pushing part (331), and the first rotating arm (230) and the second rotating arm (240) are fixedly connected with the rotating shaft (220);

the connecting rod (250) is connected with the first radial arm (230), the connecting rod (250) is in sliding fit with the first radial arm (230) along the length direction of the first radial arm (230), the first connecting piece (310) is connected with the second radial arm (240), and the first connecting piece (310) is in sliding fit with the second radial arm (240) along the length direction of the second radial arm (240).

8. The transmission structure according to claim 7, wherein an axial direction of the cam shaft (120) is parallel to a moving direction of the pushing portion (331), and the first swing arm (230) is perpendicular to the second swing arm (240).

9. The transmission structure according to claim 7, wherein the first connecting member (310) further comprises a rotating portion (312), the rotating portion (312) rotates around a direction parallel to the axis of the rotating shaft (220), and the rotating portion (312) is connected to the second radial arm (240) and slidingly engages with the second radial arm (240).

10. A tufting machine comprising a transmission according to any one of claims 1 to 9.