Clamping device for sole film coating

Abstract

The utility model discloses a clamping device for sole film coating, which comprises a revolution track, a revolution seat, a plurality of film coating frames and a clamping component, the revolution track is circular, the revolution seat is coaxially arranged on the inner side of the revolution track, one end of each film coating frame is connected with the revolution seat, the other end of each film coating frame is rotatably connected with a roller, the roller is clamped on the revolution track, and the clamping component is arranged on the revolution track. The clamping assembly is arranged on the film coating frame and is in transmission connection with the rolling wheel, during use, the clamping assembly can clamp the shoe sole in the axis direction of the rolling wheel, the revolution base is driven by the motor to rotate, the rolling wheel is driven by the film coating frame to roll along the revolution track, and the shoe sole is made to revolve with the revolution base as the center; and meanwhile, the roller drives the workpiece to rotate around the axis of the roller through the clamping assembly, so that the shoe sole can revolve and rotate at the same time, the shoe sole can regularly move and rotate within the spraying range of electroplating equipment, and the two faces and the peripheral side of the shoe sole can be evenly plated with a layer of coating film.

Description

Technical Field

[0001] The utility model relates to the technical field of coating, in particular to a clamping device for coating the sole of a shoe. Background Art

[0002] Since ancient times, shoes have been both a tool to help people walk and an accessory. With the continuous progress of technology, people have put forward higher requirements for the appearance of shoes. For example, through the electroplating process, a layer of film is plated on the surface of the sole to endow the sole with more eye-catching colors. In order to electroplate the soles in batches, there are devices for coating on the market at present. The device is umbrella-shaped, and the sole can be attached to its inner wall. When in use, the device can rotate in cooperation with the electroplating equipment so that the exposed surface of the sole is evenly plated with a layer of coating.

[0003] However, since such devices for electroplating are connected to the sole by means of bonding, after one side of the sole is electroplated, it is necessary to manually turn the sole over to electroplate the other side of the sole, which not only has low electroplating efficiency but also increases the labor cost. Summary of the Utility Model

[0004] In view of this, the utility model provides a clamping device for coating the sole of a shoe, which is used to solve the problem that in the prior art, since the electroplating device is connected to the sole by means of bonding, after one side of the sole is electroplated, it is necessary to manually turn the sole over to electroplate the other side of the sole, which not only has low electroplating efficiency but also increases the labor cost.

[0005] To achieve one or part or all of the above purposes or other purposes, the utility model provides a clamping device for coating the sole of a shoe, including a revolution orbit, a revolution seat, a plurality of coating racks and a plurality of clamping components. The revolution orbit is circular, the revolution seat is coaxially arranged inside the revolution orbit, a plurality of the coating racks are circumferentially distributed between the revolution seat and the revolution orbit along the circumference of the revolution seat. One end of the coating rack is connected to the revolution seat, and the other end of the coating rack is rotatably connected with a roller. The roller is placed on the revolution orbit and can roll along the revolution orbit. The clamping components are correspondingly arranged on the coating racks and are in transmission connection with the roller. The clamping components can clamp the workpiece along the axis direction of the roller, and the roller can drive the workpiece to rotate around the axis of the roller through the clamping components.

[0006] Preferably, the clamping component includes an outer rotating shaft, a pressing component and a plurality of middle rotating shafts. The outer rotating shaft is coaxially connected with the rotating end of the roller. A plurality of the middle rotating shafts are rotatably arranged on the coating rack and are axially spaced between the outer rotating shaft and the revolution seat along the axis of the outer rotating shaft. The middle rotating shafts are coaxial with the outer rotating shaft. The pressing component is used to drive the middle rotating shafts to gather towards the outer rotating shaft to clamp the workpiece. The roller can drive the workpiece and the middle rotating shafts to rotate synchronously through the outer rotating shaft.

[0007] Preferably, the pressing member includes a slide rail, a plurality of sliders and a plurality of tension springs. The slide rail is arranged on the bottom side wall of the coating rack along the axial direction of the roller. A plurality of sliders are slidably connected to the slide rail one by one. The tension springs and the middle rotating shafts are arranged in one-to-one correspondence with the sliders. One end of the tension spring is connected to the corresponding slider, and the other end of the tension spring is connected to the bottom side wall of the coating rack. The tension spring is used to drive the slider to slide towards the roller direction, and the middle rotating shaft is rotatably arranged on the corresponding slider.

[0008] Preferably, the pressing member further includes a screw rod and an inner rotating shaft. The screw rod is adjacent to the revolution seat and is threadedly connected to the coating rack coaxially with the roller. The inner rotating shaft is coaxially arranged at one end of the screw rod away from the revolution seat and is rotatably connected to the screw rod. The middle rotating shafts are distributed between the outer rotating shaft and the inner rotating shaft.

[0009] Preferably, anti-slip structures are provided at the ends of the outer rotating shaft, the middle rotating shaft and the inner rotating shaft.

[0010] Preferably, the outer rotating shaft and the coating rack, the middle rotating shaft and the slider, and the inner rotating shaft and the screw rod are all rotatably connected through bearings.

[0011] Preferably, a plurality of connecting blocks are circumferentially distributed on the top side wall of the revolution seat. The connecting blocks are respectively provided with an intersecting card slot and a swing slot. The card slot is arranged along the tangent direction of the revolution seat, and the swing slot is arranged along the radial direction of the revolution seat. Avoidance notches are provided below the swing slots of the revolution seat. One end of the coating rack away from the roller is fixedly connected with a connecting rod. The connecting rod passes through the avoidance notch into the swing slot. One end of the connecting rod located in the swing slot is vertically sleeved with a card shaft in the horizontal direction. The card shaft is rotatably clamped in the card slot.

[0012] Preferably, the pressing member includes a rotating sleeve, a top rod and a compression spring. The rotating sleeve is rotatably connected to one end of the coating rack close to the revolution seat. The rotating sleeve is coaxial with the outer rotating shaft. The top rod and the compression spring are both sleeved in the rotating sleeve. The top rod is slidably connected to the rotating sleeve, and one end thereof close to the outer rotating shaft passes through the rotating sleeve. The compression spring is arranged on the inner end of the top rod. The compression spring is used to drive the top rod to slide towards the outer rotating shaft direction. The middle rotating shafts are distributed between the outer rotating shaft and the top rod.

[0013] Preferably, a limiting groove is axially formed on the side wall of the rotating sleeve, and a limiting block slidably connected in the limiting groove is provided on the side wall of the top rod.

[0014] Preferably, a secondary frame is provided on one side of the coating rack. One end of the secondary frame away from the revolution seat is rotatably connected to a driven shaft. The driven shaft is parallel to the adjacent outer rotating shaft and is drivingly connected to the adjacent outer rotating shaft through a belt. One end of the secondary frame close to the revolution seat is rotatably connected to a rotating sleeve. A top rod and a spring are sleeved inside the rotating sleeve. The top rod is slidably connected to the rotating sleeve. The spring is arranged at the inner end of the top rod. The spring is used to drive the top rod to slide towards the driven shaft. A plurality of middle rotating shafts are distributed between the driven shaft and the top rod.

[0015] Implementing the embodiments of the present invention will have the following beneficial effects:

[0016] After adopting the above-mentioned clamping device for coating, during use, first install the clamping device for coating above the electroplating equipment. The clamping assembly can clamp the sole along the axial direction of the roller. The revolution seat will rotate under the drive of the motor and drive the roller to roll along the revolution track through the coating rack, so that the sole revolves around the revolution seat. At the same time, the roller will drive the workpiece to rotate around the axis of the roller through the clamping assembly, so that the sole rotates and revolves at the same time, enabling the sole to move regularly and rotate within the spraying range of the electroplating equipment, so that both sides (except the clamped part) and the periphery of the sole are evenly coated with a layer of coating, without the need for manual turning operation, which not only improves the electroplating efficiency, but also reduces the operation intensity of workers and is conducive to controlling the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Among them:

[0019] Figure 1 is the three-dimensional view of the first embodiment in the present invention;

[0020] Figure 2 is Figure 1 the enlarged view of part A in

[0021] Figure 3 is the three-dimensional view of some parts of the first embodiment in the present invention;

[0022] Figure 4 is the three-dimensional view of the second embodiment in the present invention;

[0023] Figure 5 is the exploded view of some parts of the second embodiment in the present invention.

[0024] In the figure: 1, revolution base; 11, revolution orbit; 12, connecting block; 13, card slot; 14, swing slot; 15, avoidance notch; 2, coating rack; 21, roller; 22, connecting rod; 23, clamping shaft; 24, sub-frame; 3, clamping assembly; 41, outer rotating shaft; 42, middle rotating shaft; 43, pressing member; 44, anti-slip structure; 51, slide rail; 52, slider; 53, tension spring; 54, screw; 541, finger-dial structure; 55, inner rotating shaft; 61, rotating sleeve; 611, limiting slot; 62, ejector rod; 621, limiting block; 63, compression spring; 7, driven shaft; 8, belt; a, sole. Detailed implementation mode

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this utility model; the terms "including" and "having" and any variations thereof in the specification and claims of this utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this utility model or the above drawings are used to distinguish different objects and not to describe a specific order.

[0026] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In order to enable those in the technical field to better understand the solution of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the drawings.

[0028] Such as Figures 1-5As shown in the figure, a clamping device for sole coating includes a revolution orbit 11, a revolution base 1, a plurality of coating racks 2 and a plurality of clamping components 3. The revolution orbit 11 is circular, and the revolution base 1 is coaxially arranged inside the revolution orbit 11. The plurality of coating racks 2 are circumferentially distributed between the revolution base 1 and the revolution orbit 11 along the circumference of the revolution base 1. One end of the coating rack 2 is connected to the revolution base 1, and the other end of the coating rack 2 is rotatably connected with a roller 21. The roller 21 is placed on the revolution orbit 11 and can roll along the revolution orbit 11. The clamping components 3 are correspondingly arranged on the coating racks 2 and are in transmission connection with the roller 21. When in use, first install the clamping device for coating above the electroplating equipment. The clamping component 3 can clamp the sole a along the axial direction of the roller 21. The revolution base 1 will rotate under the drive of the motor and drive the roller 21 to roll along the revolution orbit 11 through the coating rack 2, so that the sole a revolves around the revolution base 1 as the center. At the same time, the roller 21 will drive the workpiece to rotate around the axis of the roller 21 through the clamping component 3, so that the sole a revolves and rotates at the same time, making the sole a move regularly and rotate within the spraying range of the electroplating equipment, so that both sides (except the clamped part) and the circumferential side of the sole a are evenly coated with a layer of coating, without the need for manual turning operation, which not only improves the electroplating efficiency, but also reduces the operation intensity of workers and is beneficial to controlling the labor cost.

[0029] In one embodiment, the clamping component 3 includes a guide rod rotatably connected to the coating rack 2, a fixed block, a movable block and a spring. The middle part of the guide rod is bent towards one side to form an installation part parallel to the guide rod. The fixed block is fixedly arranged on the installation part. The movable block is slidably connected to the installation part. The spring is used to drive the movable block to slide close to the fixed block. One end of the guide rod is coaxially connected to the roller 21. The user can place the sole a between the fixed block and the movable block, and drive the movable block to approach the fixed block through the spring, so that the sole a is clamped between the fixed block and the movable block and is coaxial with the guide rod. When the roller 21 rolls along the revolution orbit 11, it will drive the guide rod to rotate coaxially, thereby driving the sole a to rotate around the guide rod (not shown in the figure).

[0030] Furthermore, the clamping assembly 3 includes an outer rotating shaft 41, a pressing member 43, and a plurality of middle rotating shafts 42. The outer rotating shaft 41 is coaxially connected to the rotating end of the roller 21. The plurality of middle rotating shafts 42 are rotatably arranged on the coating rack 2 and are axially spaced from the outer rotating shaft 41 between the outer rotating shaft 41 and the revolution base 1. The middle rotating shafts 42 are coaxial with the outer rotating shaft 41. The roller 21 can drive the workpiece and the middle rotating shafts 42 to rotate synchronously through the outer rotating shaft 41. During use, first place the shoe soles a one by one between the outer rotating shaft 41 and the middle rotating shaft 42 adjacent to the outer rotating shaft 41, and between the other two adjacent middle rotating shafts 42. Then, drive the middle rotating shafts 42 to gather towards the outer rotating shaft 41 through the pressing member 43, so as to clamp a plurality of shoe soles a simultaneously. When the roller 21 rolls along the revolution track 11, it will drive the outer rotating shaft 41 to rotate coaxially. The outer rotating shaft 41 will drive the remaining shoe soles a and the middle rotating shafts 42 to rotate synchronously through frictional resistance, so as to achieve the effect of driving the shoe soles a to rotate self - sufficiently.

[0031] Embodiment 1:

[0032] As Figures 1-3 shown, further, the pressing member 43 includes a slide rail 51, a plurality of sliders 52, and a plurality of tension springs 53. The slide rail 51 is arranged on the bottom side wall of the coating rack 2 along the axis of the roller 21. The plurality of sliders 52 are slidably connected to the slide rail 51 one by one. The tension springs 53 and the middle rotating shafts 42 are arranged in one - to - one correspondence with the sliders 52. One end of the tension spring 53 is connected to the corresponding slider 52, and the other end of the tension spring 53 is connected to the bottom side wall of the coating rack 2. The tension spring 53 is used to drive the slider 52 to slide towards the roller 21. The middle rotating shaft 42 is rotatably arranged on the corresponding slider 52. During use, first slide the slider 52 close to the outer rotating shaft 41 along the slide rail 51 to make the middle rotating shaft 42 close to the outer rotating shaft 41 move away from the outer rotating shaft 41. Then place the shoe sole a between the outer rotating shaft 41 and the corresponding middle rotating shaft 42. Then release the control force on the slider 52. At this time, the tension spring 53 will drive the corresponding slider 52 to reset, so as to drive the middle rotating shaft 42 thereon to clamp the shoe sole a on the outer rotating shaft 41. Similarly, the shoe sole a can also be clamped between the other middle rotating shafts 42, so as to realize the clamping of the shoe sole a one by one. When the roller 21 rotates, it will drive the outer rotating shaft 41 to rotate. The outer rotating shaft 41 will drive the remaining shoe soles a and the middle rotating shafts 42 to rotate synchronously through frictional resistance.

[0033] Further, the pressing member 43 further includes a screw rod 54 and an inner rotating shaft 55. The screw rod 54 is adjacent to the revolution base 1 and is threadedly connected to the coating rack 2 coaxially with the roller 21. The inner rotating shaft 55 is coaxially arranged at one end of the screw rod 54 away from the revolution base 1 and is rotatably connected to the screw rod 54. The middle rotating shaft 42 is distributed between the outer rotating shaft 41 and the inner rotating shaft 55. The user can rotate the screw rod 54 to make it translate, drive the inner rotating shaft 55 to move, make the inner rotating shaft 55 approach the adjacent middle rotating shaft 42, and cooperate with the middle rotating shaft 42 to clamp the sole a, or drive the inner rotating shaft 55 away from the adjacent middle rotating shaft 42, so as to install more sliders 52 and middle rotating shafts 42 on the slide rail 51 and clamp more soles a.

[0034] Specifically, a finger-dial structure 541 is coaxially arranged on the outer side of one end of the screw rod 54, so that the user can rotate the screw rod 54 through the finger-dial structure 541, reducing the operation difficulty of the screw rod 54.

[0035] Further, anti-slip structures 44 are provided at the ends of the outer rotating shaft 41, the middle rotating shaft 42 and the inner rotating shaft 55. The anti-slip structures 44 can enhance the frictional resistance between the ends of the outer rotating shaft 41, the ends of the middle rotating shaft 42, the ends of the inner rotating shaft 55 and the corresponding sole a, so as to clamp two soles a between two adjacent rotating shafts at the same time, effectively increasing the electroplating efficiency of some soles a that only require single-sided electroplating. In this embodiment, the anti-slip structure 44 is a serrated structure.

[0036] Further, the outer rotating shaft 41 and the coating rack 2, the middle rotating shaft 42 and the slider 52, and the inner rotating shaft 55 and the screw rod 54 are all rotatably connected through bearings to improve the rotational smoothness of the above components.

[0037] Further, a plurality of connecting blocks 12 are circumferentially distributed on the top side wall of the revolution base 1. The connecting blocks 12 are respectively provided with an intersecting card slot 13 and a swinging slot 14. The card slot 13 is arranged along the tangent direction of the revolution base 1, and the swinging slot 14 is arranged along the radial direction of the revolution base 1. Avoidance notches 15 are provided below the swinging slots 14 of the revolution base 1. One end of the coating rack 2 away from the roller 21 is fixedly connected with a connecting rod 22. The connecting rod 22 passes through the avoidance notch 15 into the swinging slot 14. One end of the connecting rod 22 located in the swinging slot 14 is vertically sleeved with a card shaft 23 in the horizontal direction. The card shaft 23 is rotatably clamped in the card slot 13, so that one end of the connecting rod 22 is movably placed on the connecting block 12, and one end of the coating rack 2 is lapped on the revolution base 1. When the revolution base 1 rotates, the connecting block 12 can drive the connecting rod 22 to rotate around the revolution base 1 through the limitation of the swinging slot 14, and then drive the coating rack 2 to rotate around the revolution base 1. If the horizontal height changes when the roller 21 rolls around the revolution track 11, the card shaft 23 can rotate adaptively in the card slot 13, and the end of the connecting rod 22 can swing longitudinally adaptively in the swinging slot 14, thus avoiding interference.

[0038] Embodiment 2:

[0039] As Figures 4-5 shown, further, the pressing member 43 includes a rotating sleeve 61, a ejector rod 62 and a compression spring 63. The rotating sleeve 61 is rotatably connected to one end of the coating rack 2 close to the revolution seat 1. The rotating sleeve 61 is coaxial with the outer rotating shaft 41. Both the ejector rod 62 and the compression spring 63 are sleeved in the rotating sleeve 61. The ejector rod 62 is slidably connected to the rotating sleeve 61, and one end thereof close to the outer rotating shaft 41 passes through the rotating sleeve 61. The compression spring 63 is arranged on the inner end of the ejector rod 62. The compression spring 63 is used to drive the ejector rod 62 to slide towards the outer rotating shaft 41. The middle rotating shaft 42 is distributed between the outer rotating shaft 41 and the ejector rod 62. During use, the soles a are first placed one by one between the outer rotating shaft 41 and the middle rotating shaft 42 adjacent to the outer rotating shaft 41, between the other two adjacent middle rotating shafts 42, and between the middle rotating shaft 42 adjacent to the ejector rod 62 and the ejector rod 62. Then, the control force on the ejector rod 62 is released. The ejector rod 62 will extend under the drive of the compression spring 63, and press the soles a and the middle rotating shafts 42 against the outer rotating shaft 41 along the axial direction of the roller 21 one by one, so as to realize the clamping of the soles a. When the roller 21 rotates, it will drive the outer rotating shaft 41 to rotate. The outer rotating shaft 41 will drive the remaining soles a, middle rotating shafts 42, ejector rods 62 and rotating sleeves 61 to rotate synchronously through frictional resistance.

[0040] Specifically, during the installation operation, several middle rotating shafts 42 and soles a need to be coaxial with the roller 21, so that the forces on the middle rotating shafts 42 and soles a are centered, so as to prevent the center of gravity from shifting when they rotate with the roller 21 and improve the clamping stability of the soles a.

[0041] Further, a limiting groove 611 is axially formed on the side wall of the rotating sleeve 61. A limiting block 621 slidably connected in the limiting groove 611 is arranged on the side wall of the ejector rod 62. Through the cooperation of the limiting groove 611 and the limiting block 621, the ejector rod 62 can only slide along the rotating sleeve 61, and at the same time, it is convenient for the rotating sleeve 61 to drive the ejector rod 62 to rotate.

[0042] Furthermore, a sub-frame 24 is provided on one side of the coating frame 2. The end of the sub-frame 24 away from the revolution seat 1 is rotatably connected to a driven shaft 7. The driven shaft 7 is parallel to the adjacent outer shaft 41 and is transmission-connected to the adjacent outer shaft 41 through a belt 8. The end of the sub-frame 24 close to the revolution seat 1 is rotatably connected to a rotating sleeve 61. A push rod 62 and a compression spring 63 are provided inside the rotating sleeve 61. The push rod 62 is slidably connected to the rotating sleeve 61. The compression spring 63 is arranged on the inward end of the push rod 62. The compression spring 63 is used to drive the push rod 62 to slide in the direction of the driven shaft 7. A plurality of intermediate shafts 42 are distributed between the driven shaft 7 and the push rod 62. When in use, the soles a are placed one by one on the driven shaft 7. And between the rotating shaft 42 adjacent to the driven shaft 7, between the other two adjacent rotating shafts 42, and between the rotating shaft 42 adjacent to the push rod 62 and the push rod 62, and then release the control force on the push rod 62, the push rod 62 will be driven by the compression spring 63 to extend, and press the sole a and the rotating shaft 42 on the driven shaft 7 one by one along the axial direction of the driven shaft 7, thereby clamping several soles a, when the roller 21 rolls along the orbital track 11, the roller 21 will drive the driven shaft 7 to rotate through the belt 8, so that the sole a on the sub-frame 24 and the sole a on the coating frame 2 rotate synchronously, further increasing the number of soles a that can be clamped by the device and improving the processing efficiency of the sole a.

[0043] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A clamping device for sole coating, characterized in that: include: A revolution track, a revolution seat, a plurality of coating racks and a plurality of clamping components; The revolution track is circular, the revolution seat is coaxially arranged on the inner side of the revolution track, a plurality of coating racks are distributed between the revolution seat and the revolution track along the circumference of the revolution seat, one end of the coating rack is connected to the revolution seat, and the other end of the coating rack is rotatably connected to a roller, the roller is clamped on the revolution track, and can roll along the revolution track; The clamping components are arranged on the coating frame in a one-to-one correspondence and are connected to the roller in a transmission manner. The clamping components can clamp the workpiece along the axis direction of the roller, and the roller can drive the workpiece to rotate around the axis of the roller through the clamping components.

2. A clamping device for sole coating according to claim 1, characterized in that: The clamping assembly includes an outer rotating shaft, a pressure member and a plurality of intermediate rotating shafts; The outer rotating shaft is coaxially connected to the rotating end of the roller, and several intermediate rotating shafts are rotatably arranged on the coating frame and are distributed between the outer rotating shaft and the revolving seat at intervals along the axial direction of the outer rotating shaft. The intermediate rotating shaft is coaxial with the outer rotating shaft, and the pressure member is used to drive the intermediate rotating shaft to gather toward the outer rotating shaft to clamp the workpiece, and the roller can drive the workpiece and the intermediate rotating shaft to rotate synchronously through the outer rotating shaft.

3. A clamping device for sole coating according to claim 2, characterized in that: The pressure member includes a slide rail, a plurality of sliders and a plurality of tension springs; The slide rail is arranged on the bottom side wall of the coating frame along the axial direction of the roller, and a plurality of sliders are slidably connected to the slide rail one by one. The tension spring and the rotating shaft are arranged one by one corresponding to the sliders. One end of the tension spring is connected to the corresponding slider, and the other end of the tension spring is connected to the bottom side wall of the coating frame. The tension spring is used to drive the slider to slide toward the roller, and the rotating shaft is rotatably arranged on the corresponding slider.

4. A clamping device for sole coating according to claim 3, characterized in that: The pressure-applying member also includes a screw and an inner rotating shaft. The screw is adjacent to the revolution seat and is coaxially threadedly connected to the coating frame with the roller. The inner rotating shaft is coaxially arranged at one end of the screw away from the revolution seat and is rotationally connected to the screw. The middle rotating shaft is distributed between the outer rotating shaft and the inner rotating shaft.

5. A clamping device for sole coating according to claim 4, characterized in that: The ends of the outer rotating shaft, the middle rotating shaft and the inner rotating shaft are all provided with anti-slip structures.

6. A clamping device for sole coating according to claim 4, characterized in that: The outer rotating shaft and the coating frame, the middle rotating shaft and the sliding block, and the inner rotating shaft and the screw are all rotatably connected through bearings.

7. The clamping device for sole coating according to claim 1, characterized in that: A plurality of connecting blocks are distributed circumferentially on the top side wall of the revolution seat, and intersecting clamping grooves and swinging grooves are respectively provided on the connecting blocks. The clamping grooves are arranged along the tangential direction of the revolution seat, and the swinging grooves are arranged along the radial direction of the revolution seat. The revolution seat is provided with avoidance gaps below the swinging grooves. A connecting rod is fixedly connected to one end of the coating frame away from the roller, and the connecting rod passes through the avoidance gap to the swinging groove. One end of the connecting rod located in the swinging groove is vertically sleeved with a clamping shaft in the horizontal direction, and the clamping shaft can be rotatably clamped in the clamping groove.

8. The clamping device for sole coating according to claim 2, characterized in that: The pressure member includes a rotating sleeve, a push rod and a compression spring; The rotating sleeve is rotatably connected to one end of the coating frame close to the orbiting seat, the rotating sleeve is coaxial with the outer rotating shaft, the push rod and the compression spring are both sleeved in the rotating sleeve, the push rod is slidably connected to the rotating sleeve, and its end close to the outer rotating shaft passes through the rotating sleeve, the compression spring is arranged on the inward end of the push rod, the compression spring is used to drive the push rod to slide toward the outer rotating shaft, and the intermediate rotating shaft is distributed between the outer rotating shaft and the push rod.

9. A clamping device for sole coating according to claim 8, characterized in that: The side wall of the rotating sleeve is provided with a limiting groove along the axial direction, and the side wall of the push rod is provided with a limiting block slidably connected in the limiting groove.

10. The clamping device for sole coating according to claim 8, characterized in that: A sub-frame is provided on one side of the coating frame, and a driven shaft is rotatably connected to the end of the sub-frame away from the revolution seat. The driven shaft is parallel to the adjacent outer rotating shaft and is connected to the adjacent outer rotating shaft through a belt. A rotating sleeve is rotatably connected to the end of the sub-frame close to the revolution seat, and a push rod and a spring are provided inside the rotating sleeve. The push rod is slidably connected to the rotating sleeve, and the spring is arranged on the inward end of the push rod. The spring is used to drive the push rod to slide in the direction of the driven shaft, and a plurality of intermediate shafts are distributed between the driven shaft and the push rod.

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