Swing arm mechanism, winding device and cord fabric cutting machine

Abstract

The utility model provides a swing arm mechanism, coiling device and cord fabric cutting machine wherein the swing arm mechanism comprises a main driving member, a swing arm, a disc body that can cooperate with a trolley, a transmission assembly and a clutch assembly, the swing arm is in driving connection with the main driving member and can swing under the driving of the main driving member, the disc body is rotatably arranged on the swing arm, and the transmission assembly is arranged on the disc body. The two ends of the transmission assembly are in driving connection with the main driving piece and the disc body correspondingly. The main driving piece drives the disc body to rotate through the transmission assembly. The clutch assembly comprises a first clutch part and a second clutch part, the first clutch part is connected with the swing arm, the second clutch part is in driving connection with the main driving part, the first clutch part and the second clutch part can be matched in a butt joint and separation mode, and when the first clutch part and the second clutch part are in butt joint, the main driving part drives the swing arm to swing through the clutch assembly so that the swing arm can avoid the trolley. According to the utility model, the problems of poor safety and stability in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the field of winding devices, in particular to a swing arm mechanism, a winding device and a curtain fabric cutting machine. Background Art

[0002] The cord cutting machine unwinds the large roll of calendered cord, cuts it according to the specific process width and angle through the cutting machine, then splices the cut cord into continuous cord through the jointing machine, and finally rolls the continuous cord onto a specific tooling through the winding device for use in the subsequent manufacturing process. Among them, the structural layout of the cord cutting machine is mainly composed of processes such as cord unwinding, cord cutting, cord splicing, rubber strip lamination and cord winding. If the tooling for the cord winding process is a trolley-type winding, some of the winding solutions of the trolley tooling need to meet the requirements of the trolley on one side and the trolley off the other side. At this time, the drive disc and brake disc connected to the trolley must give up the position of the trolley on the premise of meeting the winding requirements to meet the trolley transfer requirements. The current solution is that both the drive disc and the brake disc adopt the cylinder swinging solution. When the cylinder drives the drive disc to swing, it drives the drive motor to move together. Therefore, when the drive disc and the drive motor swing together under the drive of the cylinder, the swinging process has a large load and inertia, resulting in poor safety and stability, and the swinging range is restricted by the cylinder stroke. Another solution is that the drive disc and the drive motor move horizontally along the linear guide under the drive of the cylinder. This solution has a relatively high manufacturing cost and occupies a large installation space. Utility Model Content

[0003] The main purpose of the utility model is to provide a swing arm mechanism, a winding device and a cord fabric cutting machine to solve the problems of poor safety and stability in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a swing arm mechanism is provided, including a main driving member, a swing arm, a disc body that can cooperate with a trolley, a transmission assembly, and a clutch assembly. The swing arm is drivingly connected to the main driving member and can swing under the drive of the main driving member. The disc body is rotatably arranged on the swing arm. The two ends of the transmission assembly are drivingly connected to the main driving member and the disc body respectively, and the main driving member drives the disc body to rotate through the transmission assembly; the clutch assembly includes a first clutch part and a second clutch part, the first clutch part is connected to the swing arm, and the second clutch part is drivingly connected to the main driving member. The first clutch part and the second clutch part can be docked and separated. When the first clutch part and the second clutch part are docked, the main driving member drives the swing arm to swing through the clutch assembly to make the swing arm avoid the trolley.

[0005] Furthermore, the second clutch part is sleeved on the output shaft of the main driving member and is movably arranged axially along the output shaft of the main driving member. The clutch assembly also includes a clutch driving member, which is drivingly connected to the second clutch part and drives the second clutch part to move axially along the output shaft.

[0006] Furthermore, the second clutch part includes a chuck and a push plate for docking and cooperating with the first clutch part. The first clutch part and the chuck have an engaging structure for mutual docking and transmission cooperation. The chuck drives the first clutch part to rotate through the engaging structure. The push plate is connected to the chuck, and the push plate and the chuck are rotatably arranged relative to each other. The output end of the clutch drive is connected to the push plate, and the chuck is driven to move axially through the push plate.

[0007] Furthermore, the second clutch part also includes a pressure cover and a bearing assembly, the pressure cover is connected to the chuck, the push plate is located between the pressure cover and the chuck, and a bearing assembly is arranged between the push plate and the chuck and / or between the push plate and the pressure cover to enable the chuck and the pressure cover to rotate relative to the push plate.

[0008] Furthermore, the swing arm mechanism also includes a guide key, which is sleeved on the output shaft of the main driving component. The second clutch part is located at the guide key and moves axially along the output shaft of the main driving component under the guidance of the guide key.

[0009] Furthermore, the transmission assembly includes a synchronous belt, and the main driving component and the disk body are driven and connected by the synchronous belt.

[0010] Furthermore, the swing arm has a linear structure, and the main driving member and the disc body are respectively located at two ends of the swing arm.

[0011] Furthermore, the swing arm mechanism also includes a limit assembly and a displacement sensor. The limit assembly is arranged on the swing arm and controls the swing range of the swing arm. The displacement sensor is connected to the swing arm and detects the swing displacement of the swing arm.

[0012] According to another aspect of the present invention, a winding device is provided, comprising the above-mentioned swing arm mechanism.

[0013] According to another aspect of the present invention, a cord cutting machine is provided, comprising the above-mentioned winding device.

[0014] By applying the technical solution of the utility model, the main drive can drive the swing arm to complete the swinging action in time as needed by introducing the clutch assembly, and avoid the position of the trolley under the disc body, and the main drive does not need to follow the swing arm movement, so that the load of the swinging process is reduced, the inertia is reduced, and the safety and stability are greatly improved. Specifically, when the first clutch part and the second clutch part are docked and matched, the main drive can drive the swing arm to move through the transmission of the second clutch part and the first clutch part, so that the swing arm can be flexibly rotated to an appropriate angle as needed to avoid the trolley, and on the other hand, the disc body is driven by the cooperation with the transmission assembly, so that the disc body rotates to complete the winding of the material. In this way, the main drive only outputs power and does not participate in the movement process, so that the main drive can be independent of the movement structure of the swing arm and the disc body, and the main drive will not move with the movement of the swing arm and the disc body, reducing the movement load, reducing inertia, and improving safety and stability. In addition, the swing arm movement and the disc body rotation use two sets of independent transmission structures, so that the main drive drive completes the swing arm movement while not affecting the winding action of the material, thereby improving work efficiency. When the first clutch part is disengaged from the second clutch part, the main driving member loses transmission with the swing arm and cannot drive the swing arm. The material winding action is completed only by driving the disc body in cooperation with the transmission assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 The utility model shows a schematic diagram of the swing arm mechanism structure;

[0017] Figure 2 The front view of the swing arm mechanism structure is shown;

[0018] Figure 3 A partial view of the swing arm mechanism structure is shown;

[0019] Figure 4 A structural side view of the first clutch part and the second clutch part is shown;

[0020] Figure 5 A schematic structural diagram of a push plate and a bearing assembly is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Main driving member; 20. Swing arm; 21. Guide key; 30. Disc body; 40. Transmission assembly; 50. Clutch assembly; 51. First clutch part; 52. Second clutch part; 521. Chuck; 522. Push plate; 523. Pressure cover; 524. Bearing assembly; 53. Clutch driving member. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0026] In order to solve the problem of poor safety and stability in the prior art, the utility model provides a swing arm mechanism, a winding device and a cord fabric cutting machine.

[0027] like Figure 1 , Figure 2 The swing arm mechanism shown includes a main driving member 10, a swing arm 20, a disc body 30 that can cooperate with a trolley, a transmission assembly 40, and a clutch assembly 50. The swing arm 20 is drivingly connected to the main driving member 10 and can swing under the drive of the main driving member 10. The disc body 30 is rotatably arranged on the swing arm 20. The two ends of the transmission assembly 40 are drivingly connected to the main driving member 10 and the disc body 30 respectively. The main driving member 10 drives the disc body 30 to rotate through the transmission assembly 40; the clutch assembly 50 includes a first clutch part 51 and a second clutch part 52. The first clutch part 51 is connected to the swing arm 20, and the second clutch part 52 is drivingly connected to the main driving member 10. The first clutch part 51 and the second clutch part 52 can be docked and separated. When the first clutch part 51 and the second clutch part 52 are docked, the main driving member 10 drives the swing arm 20 to swing through the clutch assembly 50, so that the swing arm 20 avoids the trolley.

[0028] In this embodiment, by introducing the clutch assembly 50, the main driving component 10 can timely drive the swing arm 20 to complete the swinging action as needed to avoid the position of the trolley under the disk body 30, and the main driving component 10 does not need to move with the swing arm 20. When the swing arm 20 swings, only the swing arm 20 itself and the disk body 30 thereon and other components move, so that the load and inertia of the swinging process are reduced, so that the safety and stability are greatly improved. Specifically, when the first clutch part 51 and the second clutch part 52 are docked and matched, the main driving part 10 can drive the swing arm 20 to move through the transmission of the second clutch part 52 and the first clutch part 51, so that the swing arm 20 can be flexibly rotated to an appropriate angle as needed to avoid the trolley. On the other hand, the main driving part 10 drives the disc body 30 by cooperating with the transmission component 40, so that the disc body 30 rotates to complete the winding of the material. In this way, the main driving part 10 only outputs power and does not participate in the movement process, so that the main driving part 10 can be independent of the movement structure of the swing arm 20 and the disc body 30. The main driving part 10 will not move with the movement of the swing arm 20 and the disc body 30, thereby reducing the movement load, reducing inertia, and improving safety and stability. Moreover, the movement of the swing arm 20 and the rotation of the disc body 30 use two independent transmission structures, so that the main driving part 10 drives the swing arm 20 to complete the movement without affecting the winding action of the material, thereby improving work efficiency. When the first clutch part 51 is separated from the second clutch part 52, the main driving member 10 loses transmission with the swing arm 20 and cannot drive the swing arm 20. The main driving member 10 only drives the disc body 30 in cooperation with the transmission assembly 40 to complete the material winding action.

[0029] It should be noted that the swinging action of the swing arm 20 can be completed by docking and cooperating with the first clutch part 51 and the second clutch part 52 to avoid the position of the disc body 30 under the trolley. Similarly, when the disc body 30 has finished getting off the trolley, the main driving component 10 drives in the reverse direction to return the swing arm 20 to its original position. The main driving component 10 can use a motor.

[0030] like Figure 2As shown, the second clutch part 52 in this embodiment is sleeved on the output shaft of the main driving member 10, and is movably arranged along the axial direction of the output shaft of the main driving member 10, so that the second clutch part 52 can move along the output shaft of the main driving member 10, thereby achieving docking and separation cooperation with the first clutch part 51, and further achieving control of the movement of the swing arm 20. The clutch assembly 50 also includes a clutch drive member 53. The clutch drive member 53 can use a push cylinder. The clutch drive member 53 is connected to the second clutch part 52 and drives the second clutch part 52 to move axially along the output shaft. When the disc body 30 needs to get on or off the trolley, the clutch drive member 53 drives the second clutch part 52 to move along the output shaft in a direction close to the first clutch part 51, so that the second clutch part 52 docks with the first clutch part 51. Since the first clutch part 51 is connected to the swing arm 20 by a fastening screw, the clutch drive member 53 drives the second clutch part 52 to move in a direction close to the first clutch part 51 along the output shaft. The second clutch part 52 is connected with the first clutch part 51, so that after the second clutch part 52 is connected with the first clutch part 51, the main driving part 10 can control the swing arm 20 to swing. When the disk body 30 is unloaded, the main driving part 10 reversely drives the swing arm 20 to return to the original position, and the clutch driving part 53 drives the second clutch part 52 to move along the output axis in the direction away from the first clutch part 51, so that the second clutch part 52 is separated from the first clutch part 51, so that the swing arm 20 is out of the control of the main driving part 10 and maintains the original position to ensure safety.

[0031] like Figure 3 , Figure 4 As shown, the second clutch part 52 in this embodiment includes a chuck 521 and a push plate 522 for docking with the first clutch part 51, the first clutch part 51 and the chuck 521 have a meshing structure for mutual docking and transmission cooperation, the chuck 521 drives the first clutch part 51 to rotate through the meshing structure, the push plate 522 is connected to the chuck 521, and the push plate 522 and the chuck 521 are relatively rotatable, and the output end of the clutch driving member 53 is connected to the push plate 522, and the chuck 521 is driven to move axially through the push plate 522. In other words, the output end of the clutch driving member 53 controls the push plate 522 to move along the output shaft of the main driving member 10 through the cooperation with the push plate 522, and the cooperation between the push plate 522 and the chuck 521 enables the chuck 521 to move along the output shaft direction of the main driving member 10 with the push plate 522, thereby realizing the separation and cooperation between the chuck 521 and the first clutch part 51, and finally realizing the motion control of the swing arm 20. The push plate 522 and the chuck 521 are rotatably arranged relative to each other, so that the push plate 522 can drive the chuck 521 to move along the output axis direction of the main driving member 10 while not rotating along with the rotation of the chuck 521, thereby preventing the rotation of the push plate 522 from destroying the cooperation with the clutch driving member 53.

[0032] In this embodiment, the first clutch portion 51 is configured as a chuck flange, on which a protrusion is provided. When the first clutch portion 51 is docked with the chuck 521, the protrusion of the chuck flange is embedded in the corresponding hole of the chuck 521, or the chuck 521 is provided with a protrusion which is embedded in the hole of the chuck flange, so that the first clutch portion 51 and the chuck 521 can rotate synchronously. Of course, a concave-convex structure can also be provided at the circumferential matching position of the chuck flange and the chuck 521 to achieve the purpose of transmitting power.

[0033] like Figure 4 , Figure 5 As shown, the second clutch part 52 in this embodiment also includes a pressure cover 523 and a bearing assembly 524. The pressure cover 523 is connected to the chuck 521, and the push plate 522 is located between the pressure cover 523 and the chuck 521. In this way, the pressure cover 523 and the chuck 521 limit the push plate 522, so that the push plate 522 will not be displaced relative to the chuck 521 along the output axis direction of the main driving member 10, and the chuck 521 can be driven to move back and forth. 1 and / or between the push plate 522 and the pressure cover 523, so that the chuck 521 and the pressure cover 523 can rotate relative to the push plate 522. In this way, when the clutch driving member 53 acts on the second clutch portion 52, not only can the push plate 522 and the chuck 521 be synchronously displaced along the output axis direction of the driving member, but also the push plate 522 and the chuck 521 can generate relative rotation, thereby maintaining a reliable connection between the push plate 522 and the clutch driving member 53.

[0034] like Figure 5 The bearing assembly 524 of this embodiment includes a bearing shaft and a rotary bearing. The middle part of the push plate 522 has a cavity structure. The bearing shaft is radially penetrated on the push plate 522, and the bearing is arranged in the cavity structure and sleeved on the bearing shaft. In this way, the axis of the bearing is perpendicular to the output shaft of the main driving member 10, and the outer peripheral surface of the bearing is in contact with and matched with the end surface of the push plate 522 and / or the pressure cover 523. When the push plate 522 and / or the pressure cover 523 rotates, the outer ring of the bearing is driven to rotate through the friction force of the end surface, and the inner ring of the bearing is fixed on the bearing shaft, so that the push plate 522 and / or the pressure cover 523 can rotate smoothly relative to the middle push plate 522, thereby realizing the relative rotation between the chuck 521 and the pressure cover 523 and the push plate 522. The bearing can be arranged between the push plate 522 and the chuck 521 to enable the push plate 522 and the chuck 521 to rotate relative to each other. Similarly, the bearing can also be arranged between the push plate 522 and the pressure cover 523. Preferably, bearings are arranged between the push plate 522 and the chuck 521 and between the push plate 522 and the pressure cover 523.

[0035] The swing arm mechanism in this embodiment also includes a guide key 21, which is sleeved on the output shaft of the main driving member 10. The second clutch part 52 is located at the guide key 21 and moves axially along the output shaft of the main driving member 10 under the guidance of the guide key 21, so that the second clutch part 52 can maintain the correct trajectory during the movement and will not deviate, thereby improving stability.

[0036] The transmission assembly 40 in this embodiment includes a synchronous belt, and the main driving member 10 and the disc body 30 are connected by the synchronous belt drive, so that the output shaft of the main driving member 10 transmits power to the synchronous belt wheel, and then transmits it to the synchronous belt and then to the disc body 30, so that the disc body 30 rotates, ensuring high transmission efficiency and stability. Since the disc body 30 of this embodiment is arranged on the swing arm 20, the synchronous belt is arranged on the long side of the swing arm 20 in this embodiment, and extends along the length direction of the swing arm 20. In this way, when the swing arm 20 performs a swinging motion, it drives the synchronous belt to move synchronously, and realizes a stable fit between the synchronous belt and the disc body 30.

[0037] The swing arm 20 in this embodiment has a linear structure, and the main driving component 10 and the disk body 30 are respectively located at the two ends of the swing arm 20, so that the swing arm is not restricted by space when moving in the up and down directions, thereby increasing the swing angle. In addition, when workers operate the disk body 30, they stay away from the power device, thereby improving work safety.

[0038] The swing arm mechanism in this embodiment also includes a limit assembly and a displacement sensor. The limit assembly can be set to a structure in which a rotating shaft and an elongated slot cooperate, so that the rotating shaft rotates in the elongated slot to limit the swing angle of the swing arm 20 or to limit the displacement range of the swing arm 20 by setting a baffle. The limit assembly is set on the swing arm 20 and limits the swing range of the swing arm 20 so that the swing arm 20 can always swing within the required range. The displacement sensor is connected to the swing arm 20 and detects the swing displacement of the swing arm 20 so that the position of the swing arm 20 can be detected in real time. On the one hand, it can be used to judge the timing of transferring the disc body 30, and on the other hand, it can be used to judge whether the swing arm 20 exceeds a reasonable area, thereby judging whether the limit assembly has failed.

[0039] The working process of the swing arm mechanism of this embodiment is as follows:

[0040] The winding trolley is automatically or manually pushed to the working position, the piston rod of the clutch driving member 53 is extended, and the chuck 521, the push plate 522 and the pressure cover 523 realize overall translational movement along the guide key 21 installed on the output shaft of the main driving member 10. At this time, the chuck 521 is separated from the chuck flange installed on the driving swing arm 20; the output shaft of the main driving member 10 drives the synchronous belt installed on the output shaft to rotate, and the synchronous rotation of the disc body 30 is realized through the synchronous belt, which meets the working requirements of the winding trolley; after the winding trolley is finished working, the piston rod of the clutch driving member 53 is retracted, and the chuck 521, the push plate 522 and the pressure cover 523 realize overall translational movement along the guide key 21 installed on the output shaft. At this time, the chuck 521 is separated from the chuck flange installed on the swing arm 20. The chuck flange is engaged; the main driving component 10 drives the output shaft and the chuck 521 and the pressure cover 523 installed on the output shaft to rotate, the chuck 521 and the chuck flange are in a meshing state, and the rotation of the chuck 521 drives the chuck flange and the swing arm 20 to realize a flipping action, and turns to the required position, and is limited by the corresponding sensor and the limit assembly to meet the requirements for the winding trolley to get off the car; after the winding trolley has finished getting off the car, the main driving component 10 reverses, driving the output shaft and the chuck 521 and the pressure cover 523 installed on the output shaft to rotate, the chuck 521 and the chuck flange are in a meshing state, and the rotation of the chuck 521 drives the chuck flange and the swing arm 20 to realize a flipping action, and turns to the original position, and is limited by the corresponding sensor and the limit assembly to meet the working requirements of the winding trolley.

[0041] This embodiment also provides a winding device, including the above-mentioned swing arm mechanism.

[0042] This embodiment also provides a cord cutting machine, including the above-mentioned winding device, the cord cutting machine is mainly composed of cord unwinding, cord cutting, cord jointing, rubber strip laminating and winding devices.

[0043] It should be noted that, the multiple in the above embodiments refers to at least two.

[0044] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0045] 1. Solved the problems of heavy load, large inertia, poor safety and stability during the swinging process of the swing arm;

[0046] 2. Get rid of the limitation of the swing range restricted by the cylinder stroke, so that the swing range of the swing arm is larger;

[0047] 3. The main driving part can independently drive the two sets of motion structures of the swing arm and the disc body, which improves the working flexibility of the swing arm and the disc body.

[0048] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0051] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A swing arm mechanism, characterized in that: include: Main driving member (10); A swing arm (20), the swing arm (20) being drivingly connected to the main driving member (10) and capable of swinging under the drive of the main driving member (10); A tray (30) that can cooperate with the trolley, wherein the tray (30) is rotatably arranged on the swing arm (20); a transmission assembly (40), wherein two ends of the transmission assembly (40) are respectively drivingly connected to the main driving member (10) and the disk body (30), and the main driving member (10) drives the disk body (30) to rotate through the transmission assembly (40); A clutch assembly (50), the clutch assembly (50) comprising a first clutch portion (51) and a second clutch portion (52), the first clutch portion (51) being connected to the swing arm (20), the second clutch portion (52) being drivingly connected to the main driving member (10), the first clutch portion (51) and the second clutch portion (52) being capable of docking and disengaging, and when the first clutch portion (51) and the second clutch portion (52) are docked, the main driving member (10) drives the swing arm (20) to swing through the clutch assembly (50), so that the swing arm (20) avoids the trolley.

2. The swing arm mechanism according to claim 1, characterized in that: The second clutch part (52) is sleeved on the output shaft of the main driving member (10) and is movably arranged along the axial direction of the output shaft of the main driving member (10). The clutch assembly (50) further comprises a clutch driving member (53). The clutch driving member (53) is drivingly connected to the second clutch part (52) and drives the second clutch part (52) to move axially along the output shaft.

3. The swing arm mechanism according to claim 2, characterized in that: The second clutch part (52) comprises: a chuck (521) for docking with the first clutch part (51), the first clutch part (51) and the chuck (521) having a meshing structure for mutually docking and transmission cooperation, and the chuck (521) drives the first clutch part (51) to rotate through the meshing structure; A push plate (522), the push plate (522) is connected to the chuck (521), and the push plate (522) and the chuck (521) are rotatably arranged relative to each other, and the output end of the clutch driving member (53) is connected to the push plate (522), and the chuck (521) is driven to move axially through the push plate (522).

4. The swing arm mechanism according to claim 3, characterized in that: The second clutch portion (52) further comprises: A pressure cover (523), wherein the pressure cover (523) is connected to the chuck (521), and the push plate (522) is located between the pressure cover (523) and the chuck (521); A bearing assembly (524) is provided between the push plate (522) and the chuck (521) and / or between the push plate (522) and the pressure cover (523) so that the chuck (521) and the pressure cover (523) can rotate relative to the push plate (522).

5. The swing arm mechanism according to claim 2, characterized in that: The swing arm mechanism also includes a guide key (21), which is sleeved on the output shaft of the main driving member (10). The second clutch portion (52) is located at the guide key (21) and moves axially along the output shaft of the main driving member (10) under the guidance of the guide key (21).

6. The swing arm mechanism according to any one of claims 1 to 5, characterized in that: The transmission assembly (40) comprises a synchronous belt, and the main driving component (10) and the disk body (30) are drivingly connected via the synchronous belt.

7. The swing arm mechanism according to any one of claims 1 to 5, characterized in that: The swing arm (20) has a linear structure, and the main driving component (10) and the disk body (30) are respectively located at two ends of the swing arm (20).

8. The swing arm mechanism according to any one of claims 1 to 5, characterized in that: The swing arm mechanism also includes: a limit assembly, the limit assembly being arranged on the swing arm (20) and controlling the swing range of the swing arm (20); A displacement sensor is connected to the swing arm (20) and detects the swing displacement of the swing arm (20).

9. A winding device, characterized in that: The invention comprises the swing arm mechanism according to any one of claims 1 to 8.

10. A cord cutting machine, characterized in that: Includes the winding device as described in claim 9.

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