Automatic covering pre-coating film covering device

Abstract

The invention discloses an automatic covering pre-coating film laminating device, and relates to the technical field of film laminating devices.The automatic covering pre-coating film laminating device is characterized in that a rotating ring rotates around the axis of a bearing table, a connecting table performs circular motion along with the rotating ring, one end of a rotating roller in a mounting groove in an assembling base of the connecting table is fixed, and the other end of the rotating roller is rotatable and sleeved with a torsional spring; the torsion spring is matched with the limiting window of the rotating seat, the rotating seat can slide in the assembling groove, the unwinding roller is fixed to the rotating seat through the positioning groove, in the working process, when film covering operation is carried out, and the rotating speed of the unwinding roller is interfered by tension or external force of a film, the torsion spring plays a key role, and the limiting seat generates friction force in the limiting window under the elastic force of the torsion spring; and the rotation of the rotating seat and the unwinding roller is buffered and limited, so that the problem of wrinkling or non-uniform stretching of a film caused by abnormal rotation of the unwinding roller is prevented, the film can be accurately attached to the surface of an object on the bearing table, the excellent performance in the aspect of film covering quality is ensured, and the automatic production requirement is effectively met.

Description

Technical Field

[0001] The invention relates to the technical field of film covering devices, in particular to an automatic covering device for pre-coating films. Background Art

[0002] The pre-coating film device is a device used to cover the surface of an object with a pre-coating film; the covering structure of the existing coating device is generally composed of a manually operable pressure rod or handle connected to a pressure plate. When coating is required, the operator places the pre-coating film on the object to be coated, and then presses down the handle or pressure rod to make the pressure plate press the coating on the surface of the object. Its advantages are simple structure, low cost, easy maintenance and repair, and relatively convenient operation for some small and simple coating operations. However, the disadvantage is that it is completely dependent on manual operation, which is labor-intensive and inefficient. The pressing force is difficult to control accurately, and uneven pressing is prone to occur, resulting in unstable coating quality. For this reason, we propose an automatic pre-coating film covering device to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic pre-coating film covering device to solve the problems of manual operation, high labor intensity, low efficiency, difficulty in accurately controlling the pressing force, and prone to uneven pressing in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose of the invention, the present invention adopts the following technical scheme: an automatic pre-coating film covering device provided by the present invention comprises a workbench, a bearing platform is fixedly connected to the top of the workbench, a driving component for covering the film is arranged around the bearing platform, a control component is arranged on one side of the driving component, the driving component comprises a fixed ring and a rotating ring, the bottom of the fixed ring is fixedly connected to the workbench, the rotating ring is arranged in the fixed ring, the control component comprises two connecting platforms, one end of the connecting platform away from the bearing platform is fixedly connected to the inner ring wall of the rotating ring, the end of the connecting platform close to the bearing platform is sleeved with an assembly seat, the end surfaces of the two assembly seats close to each other are provided with assembly grooves, and the assembly grooves A plurality of mounting grooves are provided around the inner cavity, a fixed groove is provided at one end of the inner cavity of the mounting groove, a rotating roller is built in the fixed groove, a torsion spring is sleeved on the end of the rotating roller close to the fixed groove, a limiting seat is sleeved on the surface of the rotating roller, a rotating seat is built in the assembly groove, the rotating seat is slidably connected to the groove wall of the assembly groove on all sides, a plurality of limiting windows are provided around the rotating seat, the limiting window openings match the limiting seat, one end of the limiting seat close to the center of the assembly groove is slidably connected to the inner wall of the limiting window, positioning grooves are provided on the end surfaces of the two rotating seats close to each other, a unwinding roller is built in the positioning groove, both ends of the unwinding roller are fixedly connected to the inner cavity of the positioning groove, and the rotation makes a circular motion around the bearing platform.

[0005] Preferably, the fixed ring coincides with the axis of the supporting platform, and the bottom of the rotating ring is rotatably connected to the workbench surface.

[0006] Preferably, an assembly ring groove is provided on the outer ring wall of the rotating ring, a plurality of tooth grooves are provided on the bottom of the inner cavity of the assembly ring groove, a driving gear is provided on one side of the outer ring of the rotating ring, the teeth of the driving gear match the tooth grooves, the driving gear is meshed and connected with the rotating ring, a driving roller is sleeved on the middle part of the driving gear, one end of the driving roller is fixedly connected to the driving gear, a motor is provided on the end of the driving roller away from the driving gear, and the output end of the motor is fixedly connected to the driving roller.

[0007] Preferably, one side of the motor is in contact with the outer ring wall of the fixing ring, and the fixing ring is fixedly connected to the motor.

[0008] Preferably, one end of the limiting seat away from the installation groove extends into the assembly groove.

[0009] Preferably, the connecting platform is placed inside the rotating ring, the connecting platform is placed on the upper and lower sides of the rotating ring, the connecting platforms on both sides are symmetrically distributed along the axis of the rotating ring, and the assembly seat is fixedly connected to the connecting platform.

[0010] Preferably, the plurality of mounting grooves are evenly distributed around the axis of the assembly seat, one end of the rotating roller is fixedly connected to the bottom of the inner cavity of the fixing groove, and the other end of the rotating roller is rotatably connected to the bottom of the inner cavity of the mounting groove.

[0011] Preferably, the torsion spring is placed in the fixing groove, one end of the torsion spring is fixedly connected to the wall of the fixing groove, and the other end of the torsion spring is fixedly connected to the surface of the rotating roller.

[0012] Preferably, one end of the limit seat away from the center of the assembly groove is fixedly connected to the rotating roller, the limit seat is placed in the installation groove, and one end of the limit seat in the installation groove is provided with an elliptical head.

[0013] Preferably, an embedding groove is opened on one side of the installation groove to facilitate the entry of the limiting seat, the two sides of the limiting seat are slidably connected to the embedding groove wall, the embedding groove is connected to the installation groove, the rotating seat coincides with the axis of the assembly seat, and the unwinding roller coincides with the axis of the rotating seat.

[0014] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: In terms of structure and motion principle, the present invention has a rotating ring driven by a motor through a driving roller and a driving gear, and rotates around the axis of the bearing platform. The connecting platform is symmetrically distributed on the upper and lower sides of the rotating ring and is fixed to the rotating ring, and follows the rotating ring to make circular motion. The assembly seat of the connecting platform is cleverly designed, and the rotating roller in the installation groove is fixed at one end and rotatable at the other end and is sleeved with a torsion spring. The limit seat enters the assembly groove through the embedded groove and cooperates with the limit window of the rotating seat. The rotating seat can slide in the assembly groove, and the unwinding roller is fixed on the rotating seat through the positioning groove. During the working process, when the film is laminating, the film is pulled or the rotation speed of the unwinding roller is disturbed by external forces, and the torsion spring plays a key role. Under the elastic force of the torsion spring, the limit seat generates friction in the limit window to buffer and limit the rotation of the rotating seat and the unwinding roller. This prevents the problem of wrinkles or uneven stretching of the film due to abnormal rotation of the unwinding roller, and ensures that the film can accurately fit on the surface of the bearing platform object.

[0015] The device has a stable and reliable structure. The symmetrical distribution of the connection platform helps to maintain stable movement; the parts are tightly connected and the moving parts slide and connect smoothly, ensuring smooth operation. The operation is convenient and can be started by starting the motor, which reduces the difficulty of manual operation and training costs. It performs well in improving production efficiency and ensuring the quality of lamination. It can be widely used in various industries that require lamination processing, effectively meet the needs of automated production, and improve the comprehensive benefits of product lamination processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings in the specification, which constitute a part of the present invention, 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 improper limitations on the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the driving assembly of the present invention; Figure 3 It is a schematic diagram of the control component structure of the present invention; Figure 4 It is a schematic diagram of the assembly structure of the assembly seat and the rotating seat of the present invention; Figure 5 The present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 It is a schematic diagram of the internal structure of the assembly seat of the present invention; Figure 7 The present invention Figure 6 Enlarged structural diagram at B in the middle.

[0018] In the figure: 1. Workbench; 101. Carrying platform; 2. Driving assembly; 201. Fixed ring; 202. Rotating ring; 203. Assembly ring groove; 204. Tooth groove; 205. Driving gear; 206. Driving roller; 207. Motor; 3. Control assembly; 301. Connecting platform; 302. Assembly seat; 303. Assembly groove; 304. Mounting groove; 305. Fixed groove; 306. Rotating roller; 307. Torsion spring; 308. Limit seat; 309. Elliptical head; 310. Embedding groove; 312. Rotating seat; 313. Limit window; 314. Positioning groove; 315. Unwinding roller. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] See also Figure 1-Figure 7The present invention provides an automatic covering pre-coating film device, comprising a workbench 1, a carrier platform 101 is fixedly connected to the top of the workbench 1, a driving component 2 for covering the film is arranged around the carrier platform 101, and a control component 3 is arranged on one side of the driving component 2, wherein the driving component 2 comprises a fixed ring 201 and a rotating ring 202, the bottom of the fixed ring 201 is fixedly connected to the workbench 1, the axis of the fixed ring 201 and the carrier platform 101 coincide, the rotating ring 202 is sleeved inside the fixed ring 201, the bottom of the rotating ring 202 is rotatably connected to the table surface of the workbench 1, the outer ring wall of the rotating ring 202 is provided with an assembly ring groove 203, the bottom of the inner cavity of the assembly ring groove 203 is provided with a plurality of tooth grooves 204, and the plurality of tooth grooves 204 are provided. The grooves 204 are evenly distributed around the axis of the assembly ring. A driving gear 205 is provided on one side of the outer ring of the rotating ring 202. The teeth of the driving gear 205 match the tooth grooves 204. The driving gear 205 is meshed with the rotating ring 202. A driving roller 206 is sleeved in the middle of the driving gear 205. One end of the driving roller 206 is fixedly connected to the driving gear 205. A motor 207 is provided at the end of the driving roller 206 away from the driving gear 205. The output end of the motor 207 is fixedly connected to the driving roller 206. One side of the motor 207 contacts the outer ring wall of the fixed ring 201. The fixed ring 201 is fixedly connected to the motor 207. The motor 207 starts to run, and its output end drives the driving roller 206 to rotate. As a key component for power transmission, the driving roller 206 is closely connected to the driving gear 205, so that the driving gear 205 rotates synchronously with the driving roller 206. The teeth of the driving gear 205 precisely mesh with the tooth grooves 204 opened on the outer ring wall of the rotating ring 202. Since the fixed ring 201 is fixed on the workbench 1 and coincides with the axis of the carrier 101, the rotating ring 202 is sleeved in the fixed ring 201 and is in a rotational connection with the workbench 1 surface at the bottom of the fixed ring 201. Driven by the active gear 205, according to the gear transmission principle, the rotating ring 202 will perform a circular motion around the axis of the carrier 101. This process provides the basic power and motion trajectory for the laminating operation of the entire device, so that the subsequent laminating-related components can work according to the preset path.

[0021] Furthermore, two connecting platforms 301 are provided in the control component 3, and the connecting platforms 301 are placed in the rotating ring 202. One end of the connecting platforms 301 away from the supporting platform 101 is fixedly connected to the inner ring wall of the rotating ring 202. The connecting platforms 301 are placed on the upper and lower sides of the rotating ring 202. The connecting platforms 301 on both sides are symmetrically distributed along the axis of the rotating ring 202. One end of the connecting platforms 301 close to the supporting platform 101 is sleeved with an assembly seat 302, and the assembly seat 302 is fixedly connected to the connecting platforms 301. The end surfaces of the two assembly seats 302 close to each other are provided with assembly grooves 303, and a plurality of mounting grooves 304 are provided around the inner cavity of the assembly groove 303. The mounting grooves 304 are evenly distributed around the axis of the assembly seat 302, and a fixed groove 305 is opened at one end of the inner cavity of the mounting groove 304, and a rotating roller 306 is built in the fixed groove 305. One end of the rotating roller 306 is fixedly connected to the bottom of the inner cavity of the fixed groove 305, and the other end of the rotating roller 306 is rotatably connected to the bottom of the inner cavity of the mounting groove 304. A torsion spring 307 is sleeved on one end of the rotating roller 306 close to the fixed groove 305. The torsion spring 307 is placed in the fixed groove 305, and one end of the torsion spring 307 is fixedly connected to the groove wall of the fixed groove 305, and the other end of the torsion spring 307 is fixedly connected to the surface of the rotating roller 306. The surface of the rotating roller 306 is sleeved with a limited seat 306. 08, one end of the limit seat 308 away from the center of the assembly groove 303 is fixedly connected to the rotating roller 306, the limit seat 308 is placed in the installation groove 304, and one end of the limit seat 308 away from the installation groove 304 extends into the assembly groove 303, an elliptical head 309 is provided at one end of the limit seat 308 in the installation groove 304, and an embedding groove 310 is provided on one side of the installation groove 304 for easy entry of the limit seat 308, both sides of the limit seat 308 are slidably connected to the groove wall of the embedding groove 310, the embedding groove 310 is connected to the installation groove 304, and a rotating seat 312 is built in the assembly groove 303, and the axis of the rotating seat 312 coincides with the axis of the assembly seat 302 , the rotating seat 312 is slidably connected with the groove wall of the assembly groove 303 on all sides, and a plurality of openings and limit windows 313 matching the limit seat 308 are provided around the rotating seat 312. One end of the limit seat 308 close to the center of the assembly groove 303 is slidably connected with the inner wall of the limit window 313. The end faces of the two rotating seats 312 close to each other are provided with positioning grooves 314. The positioning grooves 314 are built with unwinding rollers 315. The two ends of the unwinding rollers 315 are fixedly connected to the bottom of the inner cavity of the positioning grooves 314. The unwinding rollers 315 coincide with the axis of the rotating seat 312. As the rotating ring 202 rotates, the connecting platform 301 connected thereto also starts to make circular motion. The connecting platforms 301 are distributed on the upper and lower sides of the rotating ring 202 and are symmetrically distributed along the axis of the rotating ring 202. This symmetrical structure helps to maintain stability during movement. One end of the connecting platform 301 is fixedly connected to the inner ring wall of the rotating ring 202, and the internal structure of the assembly seat 302 at the other end is exquisite. A rotating roller 306 is arranged in the mounting groove 304 of the assembly seat 302 . One end of the rotating roller 306 is fixed to the bottom of the inner cavity of the fixing groove 305 , and the other end is rotatable at the bottom of the inner cavity of the mounting groove 304 . A torsion spring 307 is sleeved on the rotating roller 306 .One end of the torsion spring 307 is fixed to the wall of the fixed groove 305, and the other end is connected to the surface of the rotating roller 306. When the limit seat 308 sleeved on the rotating roller 306 is affected by external force, the torsion spring 307 can generate a restoring force through its own elastic deformation. The limit seat 308 enters the assembly groove 303 through the embedded groove 310 on one side of the installation groove 304, and its two sides are slidably connected to the groove wall of the embedded groove 310, ensuring the stability and directionality of the movement of the limit seat 308. The rotating seat 312 in the assembly groove 303 is slidably connected to the groove wall on all sides, and the limit windows 313 opened around the rotating seat 312 cooperate with the limit seat 308. When the unwinding roller 315 starts to release the film for laminating operation, if the tension on the film is unstable or other external forces interfere with the rotation speed of the unwinding roller 315, due to the elastic effect of the torsion spring 307, the limit seat 308 will generate a certain friction force in the limit window 313, thereby buffering and limiting the rotation of the rotating seat 312 and the unwinding roller 315, preventing the unwinding roller 315 from rotating too fast or too slow, causing wrinkles or uneven stretching of the film. The positioning grooves 314 opened on the end faces of the two rotating seats 312 close to each other are used to fix the unwinding roller 315, and the two ends of the unwinding roller 315 are fixedly connected to the bottom of the inner cavity of the positioning grooves 314, ensuring the position stability of the unwinding roller 315 during the movement, so that the film can accurately cover the surface of the object on the carrier 101.

[0022] How it works In actual use, during the laminating process, in order to ensure the stability of the position of the object to be coated and prevent displacement during laminating, which affects the quality of laminating, a vacuum fixture is installed on the top of the carrier 101, and a vacuum adsorption hole is set on the top of the carrier 101 using the vacuum adsorption principle. When the vacuum system is turned on, the adsorption hole will generate negative pressure, and the object to be coated will be firmly adsorbed on the carrier 101. The motor 207 starts to run, and its output end drives the driving roller 206 to rotate. As a key component for power transmission, the driving roller 206 is closely connected with the driving gear 205, so that the driving gear 205 rotates synchronously with the driving roller 206. The teeth of the driving gear 205 precisely mesh with the tooth grooves 204 provided on the outer ring wall of the rotating ring 202. Since the fixed ring 201 is fixed on the workbench 1 and coincides with the axis of the carrier 101, the rotating ring 202 is sleeved in the fixed ring 201 and has a rotating connection relationship with the workbench 1 surface at the bottom of the fixed ring 201. Driven by the active gear 205, according to the gear transmission principle, the rotating ring 202 will make a circular motion around the axis of the carrier 101. This process provides the basic power and motion trajectory for the coating operation of the entire device, so that the subsequent coating-related components can work according to the preset path; as the rotating ring 202 rotates, the connecting platform 301 connected thereto also starts to make a circular motion. The connecting platforms 301 are distributed on the upper and lower sides of the rotating ring 202 and are symmetrically distributed along the axis of the rotating ring 202. This symmetrical structure helps to maintain stability during the movement. One end of the connecting platform 301 is fixedly connected to the inner ring wall of the rotating ring 202, and the internal structure of the assembly seat 302 at the other end is exquisite. A rotating roller 306 is arranged in the mounting groove 304 of the assembly seat 302, one end of which is fixed to the bottom of the inner cavity of the fixed groove 305, and the other end is rotatable at the bottom of the inner cavity of the mounting groove 304, and a torsion spring 307 is sleeved on the rotating roller 306. One end of the torsion spring 307 is fixed to the wall of the fixed groove 305, and the other end is connected to the surface of the rotating roller 306. When the limit seat 308 sleeved on the rotating roller 306 is affected by external force, the torsion spring 307 can generate a restoring force through its own elastic deformation. The limit seat 308 enters the assembly groove 303 through the embedded groove 310 on one side of the installation groove 304, and its two sides are slidably connected to the groove wall of the embedded groove 310, ensuring the stability and directionality of the movement of the limit seat 308. The rotating seat 312 in the assembly groove 303 is slidably connected to the groove wall on all sides, and the limit windows 313 opened around the rotating seat 312 cooperate with the limit seat 308. When the unwinding roller 315 starts to release the film for coating operation, if the tension on the film is unstable or other external forces interfere with the rotation speed of the unwinding roller 315, due to the elastic effect of the torsion spring 307, the limit seat 308 will generate a certain friction force in the limit window 313, thereby buffering and limiting the rotation of the rotating seat 312 and the unwinding roller 315, preventing the unwinding roller 315 from rotating too fast or too slow, causing wrinkles or uneven stretching of the film.The positioning grooves 314 opened on the end faces of the two rotating seats 312 close to each other are used to fix the unwinding roller 315. The two ends of the unwinding roller 315 are fixedly connected to the bottom of the inner cavity of the positioning grooves 314, ensuring the position stability of the unwinding roller 315 during movement, so that the film can accurately cover the surface of the object on the carrier 101.

[0023] The device uses a motor 207 to drive the component 2 to realize the circular motion of the unwinding roller 315. The entire film coating process does not require too much manual intervention, which greatly saves labor costs and improves production efficiency. Compared with the traditional manual film coating method, its automated operation mode can not only continuously and stably perform film coating work, but also has more obvious advantages in large-scale production. In the packaging industry, for a large number of products that need to be coated, the device can quickly and accurately complete the film coating task and shorten the production cycle. The design of the limit seat 308 and the torsion spring 307 in the control component 3 plays a key role in ensuring the quality of the film coating. During the film coating process, when the film is released from the unwinding roller 315, it may be disturbed by various external factors, such as air flow, friction changes, etc., resulting in unstable film tension. Under the elastic force of the torsion spring 307, the limit seat 308 can adjust the resistance to the unwinding roller 315 in real time to ensure that the film is released and coated with a stable and appropriate tension. This effectively avoids quality problems such as wrinkles and bubbles in the film, making the surface of the coated product smooth and smooth, and the appearance quality is significantly improved. It greatly enhances the product's protective performance and aesthetics.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic pre-coating film covering device, characterized in that: The invention comprises a workbench (1), wherein the top of the workbench (1) is fixedly connected to a bearing platform (101), a driving component (2) for covering a film is arranged around the bearing platform (101), a control component (3) is arranged on one side of the driving component (2), the driving component (2) comprises a fixed ring (201) and a rotating ring (202), the bottom of the fixed ring (201) is fixedly connected to the workbench (1), the rotating ring (202) is arranged in the fixed ring (201), and the control component (3) is arranged on the inner side of the fixed ring (201). 3) comprising two connecting platforms (301), one end of the connecting platform (301) away from the supporting platform (101) is fixedly connected to the inner ring wall of the rotating ring (202), one end of the connecting platform (301) close to the supporting platform (101) is sleeved with an assembly seat (302), the end surfaces of the two assembly seats (302) close to each other are provided with an assembly groove (303), the inner cavity of the assembly groove (303) is provided with a plurality of installation grooves (304), and one end of the inner cavity of the installation groove (304) is provided with a fixing groove (305), a rotating roller (306) is built into the fixed groove (305), a torsion spring (307) is sleeved on one end of the rotating roller (306) close to the fixed groove (305), a limiting seat (308) is sleeved on the surface of the rotating roller (306), a rotating seat (312) is built into the assembly groove (303), the rotating seat (312) is slidably connected to the groove wall of the assembly groove (303) on all sides, and a plurality of limiting windows (313) are opened on all sides of the rotating seat (312), the limiting windows The opening (313) matches the limit seat (308), one end of the limit seat (308) close to the center of the assembly groove (303) is slidably connected to the inner wall of the limit window (313), and the end surfaces of the two rotating seats (312) close to each other are provided with positioning grooves (314), and the positioning grooves (314) are equipped with unwinding rollers (315), and the two ends of the unwinding rollers (315) are fixedly connected to the inner cavity of the positioning grooves (314), and the rotating ring (202) performs a circular motion around the supporting platform (101).

2. The automatic pre-coating film covering device according to claim 1, characterized in that: The fixed ring (201) coincides with the axis of the bearing platform (101), and the bottom of the rotating ring (202) is rotatably connected to the surface of the workbench (1).

3. The automatic pre-coating film covering device according to claim 2, characterized in that: The outer ring wall of the rotating ring (202) is provided with an assembly ring groove (203), and the inner cavity bottom of the assembly ring groove (203) is provided with a plurality of tooth grooves (204). A driving gear (205) is provided on one side of the outer ring of the rotating ring (202), and the teeth of the driving gear (205) match the tooth grooves (204). The driving gear (205) is meshedly connected with the rotating ring (202). A driving roller (206) is sleeved in the middle of the driving gear (205), and one end of the driving roller (206) is fixedly connected to the driving gear (205). A motor (207) is provided at one end of the driving roller (206) away from the driving gear (205), and the output end of the motor (207) is fixedly connected to the driving roller (206).

4. The automatic pre-coating film covering device according to claim 3, characterized in that: One side of the motor (207) is in contact with the outer ring wall of the fixing ring (201), and the fixing ring (201) is fixedly connected to the motor (207).

5. The automatic pre-coating film covering device according to claim 1, characterized in that: One end of the limiting seat (308) away from the installation groove (304) extends into the assembly groove (303).

6. The automatic pre-coating film covering device according to claim 1, characterized in that: The connecting platform (301) is placed inside the rotating ring (202), the connecting platform (301) is placed on the upper and lower sides of the rotating ring (202), the connecting platforms (301) on both sides are symmetrically distributed along the axis of the rotating ring (202), and the assembly seat (302) is fixedly connected to the connecting platform (301).

7. The automatic pre-coating film covering device according to claim 1, characterized in that: The plurality of mounting grooves (304) are evenly distributed around the axis of the assembly seat (302); one end of the rotating roller (306) is fixedly connected to the bottom of the inner cavity of the fixed groove (305); and the other end of the rotating roller (306) is rotatably connected to the bottom of the inner cavity of the mounting groove (304).

8. The automatic pre-coating film covering device according to claim 1, characterized in that: The torsion spring (307) is placed in the fixed groove (305), one end of the torsion spring (307) is fixedly connected to the groove wall of the fixed groove (305), and the other end of the torsion spring (307) is fixedly connected to the surface of the rotating roller (306).

9. The automatic pre-coating film covering device according to claim 1, characterized in that: One end of the limit seat (308) away from the center of the assembly groove (303) is fixedly connected to the rotating roller (306); the limit seat (308) is placed in the installation groove (304); and one end of the limit seat (308) in the installation groove (304) is provided with an elliptical head (309).

10. The automatic pre-coating film covering device according to claim 1, characterized in that: An embedding groove (310) is provided on one side of the installation groove (304) for facilitating the entry of the limiting seat (308); both sides of the limiting seat (308) are slidably connected to the groove wall of the embedding groove (310); the embedding groove (310) is communicated with the installation groove (304); the axis of the rotating seat (312) coincides with the axis of the assembly seat (302); and the axis of the unwinding roller (315) coincides with the axis of the rotating seat (312).

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