Trimming device for production of high-strength narrow-edge photovoltaic frame

Abstract

The utility model discloses a trimming device for producing a high-strength narrow-edge photovoltaic frame, which is provided with a trimming device shell with a central limit, the inner surface of the trimming device shell is rotatably connected with a feeding belt, the lower surface of the feeding belt is connected with a support plate, and the upper surface of the feeding belt is connected with a photovoltaic frame body; comprising a moving plate which is slidably connected to the inner surface of the trimming device shell, and the inner surface of the moving plate is in threaded connection with a first threaded rod. The movable plate capable of being adjusted in a lifting mode is arranged, inclined supporting frames on the left side and the right side of the movable plate are conveniently controlled to control extrusion rollers to conduct extrusion limiting use on the photovoltaic frame body, in cooperation with use of extension springs, reset of the inclined supporting frames in the later period is facilitated, use of a first trimming grinding wheel and a second trimming grinding wheel is controlled, and the trimming effect is improved; and through the support adjusted in the middle, grinding can be formed when the support is directly matched with the lead screw to move, and the support is used for polishing when being connected with the lead screw through the moving piece.

Description

Technical Field

[0001] This utility model relates to the technical field of high-strength narrow-edge photovoltaic frame trimming device, specifically a trimming device for the production of high-strength narrow-edge photovoltaic frames. Background Technology

[0002] After production and assembly, the outer surface of photovoltaic frames is prone to wear and tear, leaving some burrs. Therefore, the outer surface is polished and cleaned by the edge trimming device used in photovoltaic frame production to improve the surface smoothness of the photovoltaic frame and reduce safety during the later installation of photovoltaic frames. During use, it is inconvenient to quickly trim the burrs generated on the edges of high-strength narrow-edge photovoltaic frames, which can easily cause injury to installers when assembling photovoltaic panels.

[0003] To overcome the above-mentioned defects, existing technology (Chinese patent application CN202022720451.6, application date 2020-11-23) provides a photovoltaic panel frame trimming device, which uses a rotary file for trimming, and the concave surfaces are all set as file surfaces, which can trim three sides of the photovoltaic panel simultaneously, improving trimming efficiency; it uses a displacement component to perform translational and reciprocating trimming operations on the photovoltaic panel, which can ensure trimming accuracy at all points on the frame; it uses a suction cup to adsorb the bottom of the photovoltaic panel, which not only satisfies the fixing effect, but also reduces damage to the photovoltaic panel; and existing technology (Chinese patent application CN202321657246.7, application date 2023-06-28) provides a solar photovoltaic panel frame trimming device, which locks the solar photovoltaic panel body in the inner cavity of the clamp on the top of the mounting plate, and moves the frame to be trimmed to the bottom of the pointed scraper through the cooperation of the rotation of the mounting plate and the sliding of the operating plate, and the sliding of the L-shaped threaded sleeve. The use of a pointed scraper to remove excess sealant achieves the goal of mechanically replacing manual labor and improving the efficiency of frame trimming. Furthermore, existing technology (Chinese patent application CN202411259334.0, filed on 2024-09-09) describes a photovoltaic profile frame deburring device. This device places the photovoltaic profile frame on a clamping frame and uses a moving mechanism to attach a second vertical plate to the photovoltaic profile frame. Under the combined action of the clamping frame, reciprocating mechanism, and toothed rail, the photovoltaic profile frame reciprocates between the first and second vertical plates, thereby using the first and second grinding strips to deburr the photovoltaic profile frame. This eliminates the need for manual pushing of the photovoltaic profile frame, reducing the workload of workers. While existing technology can complete edge trimming, it is inconvenient to effectively grind and clean the edges of the photovoltaic frame during operation, easily leading to the need for multiple sets of grinding structures to be used during edge trimming, making the process cumbersome.

[0004] To address the aforementioned issues, there is an urgent need for innovative design based on the existing stainless steel mixing tanks used for electroplating additives. Utility Model Content

[0005] The purpose of this utility model is to provide a trimming device for the production of high-strength narrow-edge photovoltaic frames, so as to solve the problem mentioned in the background art that it is inconvenient to effectively grind and clean the edges of the photovoltaic frame during the working process, which easily leads to the need for multiple sets of grinding structures to be replaced during the trimming of the photovoltaic frame, making the trimming process cumbersome.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a trimming device for producing high-strength narrow-edge photovoltaic frames, comprising a trimming device housing with a centrally positioned limit, a feeding belt rotatably connected to the inner surface of the trimming device housing, a support plate connected to the lower surface of the feeding belt, and a photovoltaic frame body connected to the upper surface of the feeding belt; comprising: a movable plate slidably connected to the inner surface of the trimming device housing, a threaded rod connected to the inner surface of the movable plate and rotating the threaded rod on the inner wall of the trimming device housing, a guide rod penetrating the inner surface of the movable plate and mounting the guide rod on the inner wall of the trimming device housing, and an elastic extrusion mechanism provided on the movable plate; a trimming roller rotatably connected to the lower left side of the inner surface of the trimming device housing, a trimming grinding wheel nested on the outer surface of the trimming roller rotatably connected to the upper right side of the inner surface of the trimming device housing, a movable frame rotatably connected to the inner surface of the threaded rod rotatably, and an extrusion trimming mechanism provided on the movable frame.

[0007] Preferably, the movable plate forms a threaded lifting structure with the trimming device housing via a threaded rod, and the trimming device housing forms a through structure with the movable plate via a guide rod, and the movable plate is symmetrically arranged about the middle section of the inner surface of the trimming device housing.

[0008] The above structure allows for control over the stability of the moving plate during use, preventing it from tilting and improving the anti-tilting performance of the subsequent downward compression support.

[0009] Preferably, in the elastic extrusion mechanism, the outer surface of the movable plate is rotatably connected to a diagonal brace, and the outer surface of the diagonal brace is nested with a tension spring. The inner surface of the diagonal brace is rotatably connected to an extrusion roller, and the lower surface of the extrusion roller is connected to the photovoltaic frame body. The movable plate and the diagonal brace form a limiting rotation structure, and the diagonal brace is symmetrically arranged about the middle section of the inner surface of the movable plate. The symmetrical diagonal braces are connected by a tension spring to form an elastic reset structure. The diagonal brace and the extrusion roller form a rotation structure, and the extrusion roller and the photovoltaic frame body form an extrusion structure.

[0010] The above structure facilitates the downward movement of the movable plate during use, controls the angle of the diagonal support frame, and controls the extrusion roller to form an extrusion limit on the photovoltaic frame body.

[0011] Preferably, the first trimming roller and the housing of the trimming device form a rotating structure, and the first trimming roller and the first trimming grinding wheel form a nested structure. Furthermore, the housing of the trimming device forms a threaded lifting structure with the movable frame through the second threaded rod.

[0012] The above structure allows for effective bottom cleaning of the photovoltaic frame body during use.

[0013] Preferably, in the extrusion trimming mechanism, a belt is rotatably connected to the rear side of the inner surface of the movable frame, and a trimming roller 2 is rotatably connected to the lower side of the inner surface of the belt, positioning and rotating the trimming roller 2 on the inner surface of the movable frame, and a trimming grinding wheel 2 is nested and connected to the outer surface of the trimming roller 2; the movable frame and the trimming roller 2 form a nested rotation structure through the belt, and the trimming roller 2 and the trimming grinding wheel 2 form a nested structure.

[0014] With the above structure, the upper side of the photovoltaic frame body can be moved down for trimming during use, which improves the stability and accuracy of trimming.

[0015] Preferably, the lower inner surface of the trimming device housing is provided with a discharge groove 1 and a discharge groove 2, and a waste collection component is installed on the lower inner surface of the trimming device housing. A lead screw is rotatably connected to the inner surface of the trimming device housing, and a moving component is threadedly connected to the outer surface of the lead screw. A bracket is slidably connected to the outer surface of the moving component, and the bracket is slidably limited on the inner surface of the discharge groove 1. A compression spring is elastically connected between the bracket and the moving component, and a fixing pad is rotatably connected to the upper surface of the bracket. A polishing wheel is installed on the outer surface of the fixing pad.

[0016] The above structure facilitates stable connection and use, allowing the position of the polishing wheel to be adjusted according to the width of the photovoltaic frame body, and the polishing wheel can be replaced with a grinding wheel to grind the edges to precise dimensions.

[0017] Preferably, the discharge trough is symmetrically opened about the middle section of the inner surface of the trimming device housing, and the trimming device housing forms a threaded structure with the lead screw and the moving part, and the moving part forms an elastic limiting sliding structure with the bracket through the compression spring. At the same time, the bracket forms a limiting sliding structure with the trimming device housing through the discharge trough, and the bracket forms a rotating structure with the polishing wheel through the fixing pad.

[0018] The above structure improves the coordination between the support and the moving parts during use, controls the stability of the support movement, enhances the safety of the polishing wheel trimming, and allows for direct connection to the lead screw with another set of supports when replacing the grinding wheel later, thus improving the grinding effect.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. It is equipped with a height-adjustable movable plate, which facilitates the control of the left and right sides of the movable plate to control the extrusion roller to form an extrusion limit on the photovoltaic frame body, and is used in conjunction with the tension spring to facilitate the subsequent reset of the inclined support frame, as well as the use of trimming grinding wheel one and trimming grinding wheel two to improve the trimming effect. Through the centrally adjustable bracket, it can form a grinding when directly moving with the lead screw, and when the bracket is connected to the lead screw through the movable part, it is used for polishing.

[0021] 2. An elastic extrusion mechanism is provided. The screw rod and guide rod assembled on the moving plate are used to control the stable lifting and lowering of the moving plate, thereby controlling the position of the extrusion roller controlled by the inclined support frame. It can be used to extrude and limit the upper surface of the photovoltaic frame body, improving the limit stability. It can also be used simultaneously at the discharge port.

[0022] 3. An extrusion trimming mechanism is provided. Through the use of threaded rod two, the position of the moving frame is controlled, driving the trimming grinding wheel two to grind the upper surface of the photovoltaic frame body. It also works in conjunction with trimming grinding wheel one for bottom grinding, achieving simultaneous top and bottom grinding. Furthermore, through the use of discharge trough one and discharge trough two, in conjunction with the waste collection component, waste removal is improved, preventing excessive waste chips from affecting the grinding process. Additionally, a threaded adjustment moving part is provided, working with a compression spring to control the stability of the bracket. The elasticity control of the adjustable polishing wheel is used to trim burrs on the sides of the photovoltaic frame body. When the bracket is using the grinding wheel, the bracket can be directly connected to the lead screw, improving grinding accuracy. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the shell of the trimming device of this utility model;

[0024] Figure 2 This is a half-sectional perspective view of the three-dimensional structure of the shell of the trimming device of this utility model;

[0025] Figure 3 This is a partial cross-sectional perspective view of the three-dimensional structure of the movable plate of this utility model;

[0026] Figure 4 This is a partial cross-sectional perspective view of the three-dimensional structure of the mobile frame of this utility model;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the bracket of this utility model in half section view;

[0028] Figure 6 This utility model Figure 5 Enlarged 3D structural diagram at point A.

[0029] In the diagram: 1. Trimming device housing; 2. Feed belt; 3. Support plate; 4. Photovoltaic frame body; 5. Moving plate; 6. Threaded rod one; 7. Guide rod; 8. Diagonal brace; 9. Tension spring; 10. Extrusion roller; 11. Trimming roller one; 12. Trimming grinding wheel one; 13. Threaded rod two; 14. Moving frame; 15. Belt; 16. Trimming roller two; 17. Trimming grinding wheel two; 18. Discharge chute one; 19. Discharge chute two; 20. Waste collection component; 21. Lead screw; 22. Moving component; 23. Bracket; 24. Extrusion spring; 25. Fixing pad; 26. Polishing wheel. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-6 The present invention provides the following technical solution: a trimming device for producing a high-strength narrow-edge photovoltaic frame, comprising a trimming device housing 1 with a centrally positioned limit, wherein a feed belt 2 is rotatably connected to the inner surface of the trimming device housing 1, and a support plate 3 is connected to the lower surface of the feed belt 2, while a photovoltaic frame body 4 is connected to the upper surface of the feed belt 2.

[0032] Example 1: As Figure 1 and Figure 3The technical solution shown is provided by this utility model as follows: A trimming device for producing high-strength narrow-edge photovoltaic frames, comprising: a movable plate 5, slidably connected to the inner surface of the trimming device housing 1, and a threaded rod 6 threadedly connected to the inner surface of the movable plate 5, rotating the threaded rod 6 on the inner wall of the trimming device housing 1; a guide rod 7 penetratingly connected to the inner surface of the movable plate 5, and the guide rod 7 installed on the inner wall of the trimming device housing 1; and the movable plate 5 is provided with an elastic pressing mechanism; the movable plate 5 and the trimming device housing 1 form a threaded lifting structure through the threaded rod 6, and the trimming device housing 1 and the movable plate 5 form a through structure through the guide rod 7. Furthermore, the movable plate 5 is symmetrically arranged about the middle section of the inner surface of the trimming device housing 1; in the elastic extrusion mechanism, the outer surface of the movable plate 5 is rotatably connected to a diagonal support 8, and the outer surface of the diagonal support 8 is nested with a tension spring 9, and the inner surface of the diagonal support 8 is rotatably connected to an extrusion roller 10, while the lower surface of the extrusion roller 10 is connected to the photovoltaic frame body 4; the movable plate 5 and the diagonal support 8 form a limiting rotation structure, and the diagonal support 8 is symmetrically arranged about the middle section of the inner surface of the movable plate 5, and the symmetrical diagonal support 8 forms an elastic reset structure through the tension spring 9, while the diagonal support 8 and the extrusion roller 10 form a rotation structure, and the extrusion roller 10 and the photovoltaic frame body 4 form an extrusion structure.

[0033] In use, the motor assembled on the rear side of the trimming device housing 1 controls the feeding belt 2 to rotate. With the use of the support plate 3, the feeding belt 2 is controlled to stably convey the photovoltaic frame body 4. During conveying, the motor on the upper side of the trimming device housing 1 is controlled to adjust the rotation of the threaded rod 6, and the moving plate 5 is controlled to form a limited sliding on the inner surface of the trimming device housing 1. This, together with the guide rod 7 assembled on the trimming device housing 1, improves the stability of the moving plate 5 when it is raised and lowered. When the moving plate 5 moves down, it drives the squeezing roller 10 connected to the inclined support frame 8 to contact the upper surface of the photovoltaic frame body 4. With the help of the tension spring 9 assembled between the symmetrical inclined support frames 8, the squeezing roller 10 improves the stability of the squeezing of the photovoltaic frame body 4 and prevents the photovoltaic frame body 4 from tilting and moving during conveying.

[0034] Example 2: Figure 1 and Figure 3The technical solution shown, based on Embodiment 1, further discloses the cooperative grinding use of trimming grinding wheel 12 and trimming grinding wheel 17. The specific details are as follows: Trimming roller 11 is rotatably connected to the lower left side of the inner surface of the trimming device housing 1, and trimming grinding wheel 12 is nested on the outer surface of trimming roller 11. A threaded rod 13 is rotatably connected to the upper right side of the inner surface of the trimming device housing 1, and a movable frame 14 is rotatably connected to the inner surface of the threaded rod 13. The movable frame 14 is equipped with a pressing trimming mechanism. Trimming roller 11 and trimming device housing 1 form a rotating structure, and the trimming roller... Trimming wheel 11 and trimming wheel 12 form a nested structure, and the trimming device housing 1 forms a threaded lifting structure with the moving frame 14 through threaded rod 13; in the extrusion trimming mechanism, the inner rear surface of the moving frame 14 is rotatably connected to a belt 15, and the lower inner surface of the belt 15 is rotatably connected to a trimming roller 16, which is positioned and rotated on the inner surface of the moving frame 14, and the outer surface of the trimming roller 16 is nested with a trimming wheel 17; the moving frame 14 forms a nested rotating structure with the trimming roller 16 through the belt 15, and the trimming roller 16 and the trimming wheel 17 form a nested structure.

[0035] When the material is conveyed to the trimming wheel 12, the motor on the upper side of the trimming device housing 1 controls the threaded rod 13 to adjust the height of the moving frame 14, thereby controlling the motor assembled on the upper side of the moving frame 14 to drive the belt 15 to control the rotation of the trimming roller 16, which in turn controls the rotation of the trimming wheel 17, causing the trimming wheel 17 to contact the front end of the photovoltaic frame body 4. The lifting and lowering cycle of the trimming wheel 17 is controlled to trim the front end of the photovoltaic frame body 4. After the front end trimming is completed, the trimming wheel 17 is raised to continue trimming the photovoltaic frame body 4. The frame body 4 is conveyed, and after the bottom of the trimming wheel 17 rises above the upper surface of the photovoltaic frame body 4, the trimming wheel 17 moves down in conjunction with the conveying of the photovoltaic frame body 4, so that its lower side contacts the upper surface of the photovoltaic frame body 4. Together with the trimming wheel 12, it polishes the upper and lower surfaces of the photovoltaic frame body 4, improving the trimming stability of the photovoltaic frame body 4. When the tail end of the photovoltaic frame body 4 moves to the right side of the trimming wheel 17, the tail end of the photovoltaic frame body 4 will be trimmed through the right side of the trimming wheel 17.

[0036] Example 3: Figure 1 and Figure 3The technical solution shown, based on Embodiment 2, further discloses the discharge of waste material and the trimming of the side edges of the photovoltaic frame body 4 with burrs. The specific details are as follows: A discharge trough 18 and a discharge trough 19 are provided on the lower inner surface of the trimming device housing 1. A waste collection component 20 is installed on the lower inner surface of the trimming device housing 1. A lead screw 21 is rotatably connected to the inner surface of the trimming device housing 1. A moving component 22 is threadedly connected to the outer surface of the lead screw 21. A bracket 23 is slidably connected to the outer surface of the moving component 22, limiting its movement on the inner surface of the discharge trough 18. A compression spring 24 is elastically connected between bracket 23 and moving part 22, and a fixing pad 25 is rotatably connected to the upper surface of bracket 23. At the same time, a polishing wheel 26 is installed on the outer surface of fixing pad 25. Discharge groove 18 is symmetrically opened about the middle section of the inner surface of trimming device housing 1. Trimming device housing 1 and moving part 22 form a threaded structure through lead screw 21. Moving part 22 and bracket 23 form an elastic limiting sliding structure through compression spring 24. At the same time, bracket 23 and trimming device housing 1 form a limiting sliding structure through discharge groove 18. Bracket 23 and polishing wheel 26 form a rotating structure through fixing pad 25.

[0037] During the conveying of the photovoltaic frame body 4, the motor on the side of the trimming device housing 1 controls the bidirectional adjustable lead screw 21 to control the position of the moving part 22. The moving part 22 cooperates with the limiting sliding bracket 23. The bracket 23 slides through the discharge chute 18 and the trimming device housing 1. While controlling the moving part 22 to stably convey the wire, the bracket 23 is controlled to move in the center. The polishing wheel 26 assembled on the fixing pad 25 controlled by the motor on the bracket 23 is used for polishing. This is used to trim the side of the photovoltaic frame body 4 with small errors and burrs. When the difference on the side of the photovoltaic frame body 4 is large, the polishing wheel 26 is replaced and another set of brackets 23 is directly threaded onto the outer surface of the lead screw 21. This controls the grinding wheel to effectively grind the side of the photovoltaic frame body 4, improving the stability of the grinding at the hard joint. This is also used in conjunction with the opening of the discharge chute 18 and the discharge chute 29, and the waste collection part 20 to discharge waste.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A trimming device for producing a high-strength narrow-edge photovoltaic frame, comprising a trimming device housing (1) with a centrally positioned limit, wherein a feed belt (2) is rotatably connected to the inner surface of the trimming device housing (1), and a support plate (3) is connected to the lower surface of the feed belt (2), while a photovoltaic frame body (4) is connected to the upper surface of the feed belt (2). Its features are, include: The movable plate (5) is slidably connected to the inner surface of the trimming device housing (1), and the inner surface of the movable plate (5) is threadedly connected to a threaded rod (6), and the threaded rod (6) is rotated on the inner wall of the trimming device housing (1). The inner surface of the movable plate (5) is connected through a guide rod (7), and the guide rod (7) is installed on the inner wall of the trimming device housing (1). At the same time, the movable plate (5) is provided with an elastic extrusion mechanism. Trimming roller 1 (11) is rotatably connected to the lower left side of the inner surface of the trimming device housing (1), and trimming grinding wheel 1 (12) is nested on the outer surface of trimming roller 1 (11). Threaded rod 2 (13) is rotatably connected to the upper right side of the inner surface of the trimming device housing (1). At the same time, a movable frame (14) is rotatably connected to the inner surface of threaded rod 2 (13), and the movable frame (14) is provided with a pressing trimming mechanism.

2. The trimming device for producing high-strength narrow-edge photovoltaic frames according to claim 1, characterized in that: The movable plate (5) forms a threaded lifting structure with the trimming device housing (1) through the threaded rod (6), and the trimming device housing (1) forms a through structure with the movable plate (5) through the guide rod (7), and the movable plate (5) is symmetrically arranged about the middle section of the inner surface of the trimming device housing (1).

3. The trimming device for producing high-strength narrow-edge photovoltaic frames according to claim 1, characterized in that: In the elastic extrusion mechanism, the outer surface of the movable plate (5) is rotatably connected to a diagonal support frame (8), and the outer surface of the diagonal support frame (8) is nested with a tension spring (9). The inner surface of the diagonal support frame (8) is rotatably connected to an extrusion roller (10), and the lower surface of the extrusion roller (10) is connected to a photovoltaic frame body (4). The movable plate (5) and the diagonal support frame (8) form a limiting rotation structure, and the diagonal support frame (8) is symmetrically arranged about the middle section of the inner surface of the movable plate (5). The symmetrical diagonal support frames (8) form an elastic reset structure through the tension spring (9). At the same time, the diagonal support frame (8) and the extrusion roller (10) form a rotation structure, and the extrusion roller (10) and the photovoltaic frame body (4) form an extrusion structure.

4. The trimming device for producing high-strength narrow-edge photovoltaic frames according to claim 1, characterized in that: The trimming roller (11) and the trimming device housing (1) form a rotating structure, and the trimming roller (11) and the trimming grinding wheel (12) form a nested structure. The trimming device housing (1) and the moving frame (14) form a threaded lifting structure through the threaded rod (13).

5. The trimming device for producing high-strength narrow-edge photovoltaic frames according to claim 1, characterized in that: The inner surface of the moving frame (14) in the extrusion trimming mechanism is rotatably connected to a belt (15), and the lower inner surface of the belt (15) is rotatably connected to a trimming roller (16), which positions and rotates on the inner surface of the moving frame (14). The outer surface of the trimming roller (16) is nested with a trimming grinding wheel (17). The moving frame (14) and the trimming roller (16) form a nested rotating structure through the belt (15), and the trimming roller (16) and the trimming grinding wheel (17) form a nested structure.

6. The trimming device for producing high-strength narrow-edge photovoltaic frames according to claim 1, characterized in that: The inner surface of the trimming device housing (1) is provided with a discharge groove 1 (18) and a discharge groove 2 (19). A waste collection component (20) is installed on the lower inner surface of the trimming device housing (1). A lead screw (21) is rotatably connected to the inner surface of the trimming device housing (1). A moving part (22) is threadedly connected to the outer surface of the lead screw (21). A bracket (23) is slidably connected to the outer surface of the moving part (22). The bracket (23) is slidably limited on the inner surface of the discharge groove 1 (18). A compression spring (24) is elastically connected between the bracket (23) and the moving part (22). A fixing pad (25) is rotatably connected to the upper surface of the bracket (23). A polishing wheel (26) is installed on the outer surface of the fixing pad (25).

7. The trimming device for producing high-strength narrow-edge photovoltaic frames according to claim 6, characterized in that: The discharge trough (18) is symmetrically opened about the middle section of the inner surface of the trimming device housing (1), and the trimming device housing (1) forms a threaded structure with the lead screw (21) and the moving part (22), and the moving part (22) forms an elastic limiting sliding structure with the support (23) through the compression spring (24). At the same time, the support (23) forms a limiting sliding structure with the trimming device housing (1) through the discharge trough (18), and the support (23) forms a rotating structure with the polishing wheel (26) through the fixing pad (25).

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