High-efficiency pickling equipment for electroplating plate processing

Abstract

The utility model relates to pickling equipment technical field discloses a kind of efficient pickling equipment for electroplated plate processing, including cleaning tank, the inside bottom end of cleaning tank is equipped with cleaning mechanism, the cleaning mechanism is used to clean heating pipe, the inside right end of cleaning tank is equipped with push mechanism, the push mechanism is used to agitate acid liquor in cleaning tank;The cleaning mechanism includes transmission rod, the inside bottom end of cleaning tank is installed in transmission rod, the outer wall middle part bottom side of transmission rod is fixedly connected with brush, the outer wall left end of transmission rod is fixedly connected with limit slot.In the utility model, transmission rod moves linearly left and right, to drive brush synchronous left and right movement, continuously clean heating pipe surface, the design solves the problem that scale is difficult to find after electroplated plate scratches heating pipe surface coating in pickling process, avoids scale to affect pickling efficiency, guarantees that pickling work is efficiently carried out.

Description

Technical Field

[0001] This utility model relates to the field of pickling equipment technology, and in particular to a high-efficiency pickling equipment for electroplating plate processing. Background Technology

[0002] Electroplated sheet is a type of sheet material on which a layer of metal film is uniformly plated onto the surface of a metal or non-metal substrate through an electroplating process. Its core principle is to use electrolysis to reduce and deposit the metal ions on the substrate surface, forming a tightly bonded functional film. In the fields of aerospace, machinery manufacturing, and jewelry processing, electroplated sheet has become a key material due to its unique properties. Common electroplating processes include zinc plating, copper plating, nickel plating, chromium plating, gold plating, and silver plating. Different process combinations can be customized to design the plating structure according to specific needs. The thickness, uniformity, and adhesion of the plating layer are the core parameters for measuring the quality of electroplated sheet. Precise process control and testing methods are required to ensure the reliability and stability of product performance.

[0003] High-efficiency pickling equipment for electroplating plates is a specialized device that rapidly removes oxide scale, rust, and impurities from the surface of substrates using a strong acid solution. Heating the pickling solution with a heating tube can increase the pickling rate, but after prolonged use, scale will form on the surface of the heating tube, thus affecting the heating effect. The existing method of cleaning the heating tube involves disassembling the heating tube and cleaning its surface. This method can clean the heating tube comprehensively, but before cleaning, the machine must be stopped to drain the acid and remove the heating tube from the equipment, which is very time-consuming and labor-intensive. Existing technology adds a coating to the surface of the heating tube to prevent scale formation, but during the pickling process, the electroplated plate will scratch the surface coating, causing scale to form on the surface of the heating tube, which is difficult to detect and affects the pickling efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a high-efficiency pickling equipment for electroplating plate processing, which aims to improve the problem in the prior art that the electroplating plate will scratch its surface coating during the pickling process, resulting in scale buildup on the heating tube surface that is difficult to detect and affects the pickling efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency pickling device for electroplating plate processing, comprising a cleaning tank, a cleaning mechanism installed at the bottom of the cleaning tank for cleaning heating tubes, a pushing mechanism installed at the right end of the cleaning tank for agitating the acid solution in the cleaning tank; the cleaning mechanism includes a transmission rod installed at the bottom of the cleaning tank, a brush fixedly connected to the bottom side of the middle part of the outer wall of the transmission rod, a limit groove fixedly connected to the left end of the outer wall of the transmission rod, and a drive assembly installed on the rear side of the outer wall of the transmission rod.

[0006] As a further description of the above technical solution:

[0007] The drive assembly includes a motor mounted on the rear side of the outer wall of the transmission rod. A power rod is fixedly connected to the output end of the motor. The outer wall of the power rod is rotatably connected to the rear end of the cleaning tank. A rotating frame is rotatably connected to the front end of the outer wall of the power rod. A power shaft is fixedly connected to the front side of the other end of the outer wall of the rotating frame. The outer wall of the power shaft is slidably connected to the inner wall of the limiting groove. A base plate is installed on the bottom outer side of the power rod. A bracket is fixedly connected to the rear end of the top left side of the outer wall of the base plate. The upper middle inner wall of bracket one is rotatably connected to the outer wall of the power rod. A bracket two is fixedly connected to the top right end of the outer wall of the base plate. The upper middle inner wall of bracket two is slidably connected to the outer wall of the transmission rod. A support block is fixedly connected to the right end of the inner bottom wall of the cleaning tank. The upper middle inner wall of the support block is slidably connected to the outer wall of the transmission rod.

[0008] As a further description of the above technical solution:

[0009] The pushing mechanism includes a telescopic frame, which is installed inside the right end of the cleaning tank. The right side of the outer wall of the telescopic frame is fixedly connected to the right side of the inner wall of the cleaning tank. A fixed shaft is rotatably connected to the rear left end of the telescopic frame. A movable plate is installed at the top left end of the outer wall of the telescopic frame. The top end of the outer wall of the fixed shaft is rotatably connected to the inner rear end of the movable plate. A support plate is installed at the bottom left end of the outer wall of the telescopic frame. The bottom end of the outer wall of the fixed shaft is rotatably connected to the inner rear end of the support plate. A movable shaft is rotatably connected to the front left end of the telescopic frame. The top of the outer wall of the movable shaft is slidably connected to the inner wall of the movable plate. The bottom of the outer wall of the movable shaft is slidably connected to the inner wall of the support plate. Multiple paddles are fixedly connected at equal intervals at both the front and rear ends of the top of the outer wall of the support plate. A block is installed in the middle of the telescopic frame. A power component is installed on the right side of the outer wall of the block.

[0010] As a further description of the above technical solution:

[0011] The power assembly includes a hydraulic rod, the output end of which is fixedly connected to a push rod, and the outer wall of the push rod is slidably connected to the right end of the cleaning tank.

[0012] As a further description of the above technical solution:

[0013] A support frame is fixedly connected to the bottom of the outer wall of the motor, and the support frame is installed on the rear side of the outer wall of the cleaning tank.

[0014] As a further description of the above technical solution:

[0015] A bracket three is installed on the outside of the hydraulic rod, and the left side of the outer wall of the bracket three is fixedly connected to the right side of the outer wall of the cleaning tank.

[0016] As a further description of the above technical solution:

[0017] A support net is fixedly connected to the upper part of the inner wall of the cleaning tank, and the support net is installed on the top outer side of the pushing mechanism.

[0018] As a further description of the above technical solution:

[0019] The inner wall of the cleaning tank has grooves on both the front and rear sides, and the interior of the grooves is slidably connected to the front and rear ends of the outer wall of the support plate.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when the rotating frame rotates, it can drive the associated limiting groove to move. The limiting groove is welded and fixed to the transmission rod. The bracket and support block on the outside of the transmission rod limit its movement. Under the drive of the limiting groove, the transmission rod moves left and right in a straight line, thereby driving the brush to move left and right synchronously and continuously cleaning the surface of the heating tube. This design solves the problem that scale is difficult to detect after the electroplated plate scratches the coating on the surface of the heating tube during the pickling process, avoids scale affecting the pickling efficiency, and ensures that the pickling work is carried out efficiently.

[0022] 2. In this utility model, the left end of the telescopic frame forms a linkage structure with the support plate through a fixed shaft and a moving shaft. When the telescopic frame extends or retracts, it drives the support plate to move to the left synchronously. The paddle installed on the support plate moves accordingly, continuously stirring the acid in the cleaning tank and keeping it in a flowing state. This design effectively avoids uneven concentration caused by acid reaction consumption on the surface of the plate when the acid is still, solves the problem of incomplete pickling or excessive corrosion in some areas, and ensures uniform and stable pickling effect. Attached Figure Description

[0023] Figure 1 This is a front view of a high-efficiency pickling equipment for electroplating plate processing proposed in this utility model;

[0024] Figure 2 This is a perspective view of a high-efficiency pickling equipment for electroplating plate processing proposed in this utility model;

[0025] Figure 3 This is a side view of a high-efficiency pickling equipment for electroplating plate processing proposed in this utility model;

[0026] Figure 4 This is a partial structural cross-sectional view of a high-efficiency pickling equipment for electroplating plate processing proposed in this utility model;

[0027] Figure 5 for Figure 4 A magnified view of point A;

[0028] Figure 6This is a schematic diagram of the cleaning mechanism of a high-efficiency pickling equipment for electroplating plate processing proposed in this utility model;

[0029] Figure 7 This is a diagram illustrating the driving mechanism of a high-efficiency pickling equipment for electroplating plate processing proposed in this utility model.

[0030] Legend:

[0031] 1. Cleaning tank; 2. Cleaning mechanism; 201. Transmission rod; 202. Brush; 203. Limiting groove; 204. Drive assembly; 2041. Motor; 2042. Power rod; 2043. Rotating frame; 2044. Power shaft; 2045. Bracket one; 2046. Base plate; 2047. Bracket two; 2048. Support frame one; 2049. Support block; 3. Pushing mechanism; 301. Telescopic frame; 302. Fixed shaft; 303. Moving plate; 304. Support plate; 305. Paddle; 306. Block; 307. Power assembly; 3071. Hydraulic rod; 3072. Push rod; 3073. Bracket three; 308. Moving shaft; 4. Support net; 5. Groove. Detailed Implementation

[0032] 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.

[0033] Reference Figure 3 and Figure 6This utility model provides an embodiment of a high-efficiency acid pickling device for electroplating plate processing, comprising a cleaning tank 1, a cleaning mechanism 2 installed at the bottom of the cleaning tank 1 for cleaning heating tubes, and a pushing mechanism 3 installed at the right end of the cleaning tank 1 for agitating the acid solution in the cleaning tank 1; the cleaning mechanism 2 includes a transmission rod 201 installed at the bottom of the cleaning tank 1, a brush 202 fixedly connected to the bottom side of the middle part of the outer wall of the transmission rod 201, a limit groove 203 fixedly connected to the left end of the outer wall of the transmission rod 201, and a drive assembly 204 installed at the rear side of the outer wall of the transmission rod 201, including a motor 2041 installed at the rear side of the outer wall of the transmission rod 201, a power rod 2042 fixedly connected to the output end of the motor 2041, the outer wall of the power rod 2042 being rotatably connected to the rear end of the cleaning tank 1, and the power rod 2042... A rotating frame 2043 is rotatably connected to the front end of the outer wall of the cleaning tank 1. A power shaft 2044 is fixedly connected to the front side of the other end of the outer wall of the rotating frame 2043. The outer wall of the power shaft 2044 is slidably connected to the inner wall of the limiting groove 203. A base plate 2046 is installed on the bottom of the outer side of the power rod 2042. A bracket 1 2045 is fixedly connected to the rear end of the top left side of the outer wall of the base plate 2046. The upper middle inner wall of the bracket 1 2045 is rotatably connected to the outer wall of the power rod 2042. A bracket 2047 is fixedly connected to the top right side of the outer wall of the base plate 2046. The upper middle inner wall of the bracket 2047 is slidably connected to the outer wall of the transmission rod 201. A support block 2049 is fixedly connected to the right end of the inner bottom wall of the cleaning tank 1. The upper middle inner wall of the support block 2049 is slidably connected to the outer wall of the transmission rod 201. A support frame 2048 is fixedly connected to the bottom of the outer wall of the motor 2041. The support frame 2048 is installed on the rear side of the outer wall of the cleaning tank 1.

[0034] Specifically, the output end of the motor 2041 and the power rod 2042 are welded together to form a robust power transmission node, ensuring the stability and reliability of the power output. When the motor 2041 starts running, the rotational power it generates is directly transmitted to the power rod 2042, driving the rotating frame 2043 welded to the front end of the power rod 2042 to rotate synchronously. The other end of the rotating frame 2043 is equipped with a power shaft 2044, which forms a precise sliding fit structure with the limiting groove 203. The power shaft 2044 can slide flexibly inside the limiting groove 203. As the rotating frame 2043 continues to rotate, the sliding trajectory of the power shaft 2044 in the limiting groove 203 changes, thereby driving... The limiting groove 203 moves synchronously. The limiting groove 203 and the transmission rod 201 are rigidly connected by welding. The outer side of the transmission rod 201 is equipped with bracket 2047 and support block 2049, which together form a limiting and fixing structure, which can restrict the movement direction of the transmission rod 201, so that it can only move left and right in a straight line. When the limiting groove 203 moves, it will drive the transmission rod 201 connected to it to move left and right in a straight line synchronously. The brush 202 welded to the bottom of the transmission rod 201 also moves left and right back and forth, thereby continuously cleaning the surface of the heating tube, effectively removing dirt from the surface of the heating tube, avoiding scale accumulation, ensuring efficient pickling operation, and ensuring the smooth implementation of the pickling process.

[0035] Reference Figure 1 , Figure 3 and Figure 7 The pushing mechanism 3 includes a telescopic frame 301, which is installed inside the right end of the cleaning tank 1. The right side of the outer wall of the telescopic frame 301 is fixedly connected to the right side of the inner wall of the cleaning tank 1. A fixed shaft 302 is rotatably connected to the rear left end of the telescopic frame 301. A movable plate 303 is installed at the top left end of the outer wall of the telescopic frame 301. The top end of the outer wall of the fixed shaft 302 is rotatably connected to the inner rear end of the movable plate 303. A support plate 304 is installed at the bottom left end of the outer wall of the telescopic frame 301. The bottom end of the outer wall of the fixed shaft 302 is rotatably connected to the inner rear end of the support plate 304. A movable shaft 308 is rotatably connected to the front left end of the telescopic frame 301. The top end of the outer wall of the movable shaft 308 is... The inner wall of the movable plate 303 is slidably connected to the inner wall of the movable shaft 308, and the bottom of the outer wall of the movable shaft 308 is slidably connected to the inner wall of the support plate 304. Multiple paddles 305 are fixedly connected at equal intervals at the front and rear ends of the top of the outer wall of the support plate 304. A block 306 is installed in the middle of the telescopic frame 301. A power component 307 is installed on the right side of the outer wall of the block 306. The power component 307 includes a hydraulic rod 3071. A push rod 3072 is fixedly connected to the output end of the hydraulic rod 3071. The outer wall of the push rod 3072 is slidably connected to the right end of the cleaning tank 1. A bracket 3073 is installed on the outside of the hydraulic rod 3071. The left side of the outer wall of the bracket 3073 is fixedly connected to the right side of the outer wall of the cleaning tank 1.

[0036] Specifically, the output end of the hydraulic rod 3071 and the push rod 3072 are welded together to form a stable connection structure. The push rod 3072 penetrates the outer wall of the cleaning tank 1, and a block 306 is welded to its other end. The block 306 is firmly installed on the telescopic frame 301, which is fixed to the inner wall of the cleaning tank 1, forming a stable mechanical connection system. When the hydraulic rod 3071 is activated, the driving force generated inside it is transmitted to the push rod 3072 through the output end, which in turn pushes the block 306, causing the telescopic frame 301 to extend and retract to the left. The left end of the telescopic frame 301 adopts a unique connection design, forming a linkage structure with the support plate 304 through the fixed shaft 302 and the moving shaft 308. This connection method ensures the accuracy and stability of motion transmission. When the telescopic frame 301 extends and retracts to the left, the displacement it generates will be transmitted through the fixed shaft 302 and the moving shaft 308. The moving shaft 308 synchronously transmits power to the support plate 304, causing the support plate 304 to extend and retract synchronously to the left. A lever 305 is installed on one side of the support plate 304. As the support plate 304 extends and retracts, the lever 305 also moves accordingly. During the movement, the lever 305 continuously agitates the acid solution in the cleaning tank 1, keeping it in a flowing state. During the pickling process, if the acid solution is in a static state, the acid solution near the surface of the plate will be rapidly consumed due to chemical reactions, resulting in a decrease in the acid solution concentration in that area, while the acid solution concentration in areas far from the plate is relatively high. This uneven concentration can easily cause problems such as incomplete pickling or excessive corrosion in some areas, affecting the pickling quality. This device effectively avoids the phenomenon of uneven acid solution concentration by continuously agitating the acid solution with the lever 305, ensuring that the pickling process is carried out uniformly and efficiently, and improving the stability and reliability of the pickling process.

[0037] Reference Figure 2 , Figure 4 and Figure 5 A support net 4 is fixedly connected to the upper part of the inner wall of the cleaning tank 1. The support net 4 is installed on the top of the outer side of the pushing mechanism 3 and is used to support the electroplating plate in the acid solution, increase the contact area with the acid solution and thus improve the pickling efficiency. Grooves 5 are provided on the front and rear sides of the inner wall of the cleaning tank 1. The interior of the groove 5 is slidably connected to the front and rear ends of the outer wall of the support plate 304, which can provide stable support for the support plate.

[0038] Specifically, a support mesh 4 is fixedly connected to the upper part of the inner wall of the cleaning tank 1 to form a support platform for the electroplating plate. During the acid treatment process, the support mesh 4 can evenly support the electroplating plate and make it completely immersed in the acid. By expanding the contact range between the electroplating plate and the acid, the chemical reaction process is accelerated, thereby significantly improving the pickling efficiency. Grooves 5 are respectively opened on the front and rear sides of the inner wall of the cleaning tank 1. The grooves 5 are precisely matched with the front and rear ends of the outer wall of the support plate 304 to form a sliding fit structure. This design provides stable support and guidance for the support plate 304, ensuring that it remains stable during reciprocating motion and avoiding deviation or shaking, thereby ensuring the stability of the entire pickling system.

[0039] Working principle: By turning on the motor 2041, the transmission rod 201 drives the brush 202 to move left and right, achieving continuous cleaning of the heating tube. Because the output end of the motor 2041 is welded to the power rod 2042, when the motor 2041 is started, the power generated will cause the power rod 2042 to drive the rotating frame 2043 welded to its front end to rotate synchronously. The power shaft 2044 installed at the other end of the rotating frame 2043 can slide inside the limiting groove 203. Therefore, when the rotating frame 2043 rotates, the limiting groove 203 will be driven to move synchronously. Since the limiting groove 203 is welded to the transmission rod 201 and the outer side of the transmission rod 201 is respectively equipped with bracket 2047 and support block 2049 for limiting and fixing, the limiting groove 203 will drive the transmission rod 201 to move left and right in a straight line, thereby causing the brush 202 to move left and right to achieve continuous cleaning of the heating tube. This solves the problem that the electroplated plate will scratch its surface coating during the pickling process, resulting in scale on the surface of the heating tube that is difficult to detect and affects the pickling efficiency.

[0040] By activating the hydraulic rod 3071, the support plate 304 moves the lever 305 left and right, thus maintaining a continuous flow of acid in the equipment. Since the push rod 3072 welded to the output end of the hydraulic rod 3071 passes through the outer wall of the cleaning tank 1, and a block 306 is welded to its other end, and the block 306 is mounted on the telescopic frame 301 which is fixed to the inner wall of the cleaning tank 1, activating the hydraulic rod 3071 causes the telescopic frame 301 to extend to the left. Because the left end of the telescopic frame 301 is linked to the support plate 304 via the fixed shaft 302 and the moving shaft 308, when the telescopic frame 301 extends to the left, the support plate 304 mounted on its left side extends to the left simultaneously, thereby driving the lever 305 to maintain a continuous flow of acid in the cleaning tank 1. This solves the problem that if the acid is stagnant, the concentration of acid near the surface of the plate decreases due to reaction consumption, while the concentration in areas further away is higher, easily leading to incomplete pickling or excessive corrosion in certain areas.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency pickling device for electroplating plate processing, comprising a cleaning tank (1), characterized in that: A cleaning mechanism (2) is installed at the bottom of the inside of the cleaning tank (1). The cleaning mechanism (2) is used to clean the heating tube. A pushing mechanism (3) is installed at the right end of the inside of the cleaning tank (1). The pushing mechanism (3) is used to stir the acid in the cleaning tank (1). The cleaning mechanism (2) includes a transmission rod (201), which is installed at the bottom of the inside of the cleaning tank (1). A brush (202) is fixedly connected to the bottom side of the middle part of the outer wall of the transmission rod (201). A limit groove (203) is fixedly connected to the left end of the outer wall of the transmission rod (201). A drive assembly (204) is installed on the rear side of the outer wall of the transmission rod (201).

2. The high-efficiency pickling equipment for electroplating plate processing according to claim 1, characterized in that: The drive assembly (204) includes a motor (2041), which is mounted on the rear side of the outer wall of the transmission rod (201). A power rod (2042) is fixedly connected to the output end of the motor (2041). The outer wall of the power rod (2042) is rotatably connected to the rear end of the cleaning tank (1). A rotating frame (2043) is rotatably connected to the front end of the outer wall of the power rod (2042). A power shaft (2044) is fixedly connected to the front side of the other end of the outer wall of the rotating frame (2043). The outer wall of the power shaft (2044) is slidably connected to the inner wall of the limiting groove (203). The outer wall of the power rod (2042)... A base plate (2046) is installed on the bottom side. A bracket (2045) is fixedly connected to the rear end of the top left side of the outer wall of the base plate (2046). The upper middle inner wall of the bracket (2045) is rotatably connected to the outer wall of the power rod (2042). A bracket (2047) is fixedly connected to the top right end of the outer wall of the base plate (2046). The upper middle inner wall of the bracket (2047) is slidably connected to the outer wall of the transmission rod (201). A support block (2049) is fixedly connected to the right end of the inner bottom wall of the cleaning tank (1). The upper middle inner wall of the support block (2049) is slidably connected to the outer wall of the transmission rod (201).

3. The high-efficiency pickling equipment for electroplating plate processing according to claim 1, characterized in that: The pushing mechanism (3) includes a telescopic frame (301), which is installed inside the right end of the cleaning tank (1). The right side of the outer wall of the telescopic frame (301) is fixedly connected to the right side of the inner wall of the cleaning tank (1). A fixed shaft (302) is rotatably connected to the rear left end of the telescopic frame (301). A movable plate (303) is installed on the top left end of the outer wall of the telescopic frame (301). The top end of the outer wall of the fixed shaft (302) is rotatably connected to the inner rear end of the movable plate (303). A support plate (304) is installed on the bottom left end of the outer wall of the telescopic frame (301). The fixed shaft (302) The bottom of the outer wall is rotatably connected to the inner rear wall of the support plate (304). The left front end of the telescopic frame (301) is rotatably connected to a moving shaft (308). The top of the outer wall of the moving shaft (308) is slidably connected to the inner wall of the moving plate (303). The bottom of the outer wall of the moving shaft (308) is slidably connected to the inner wall of the support plate (304). Multiple paddles (305) are fixedly connected at equal distances to the front and rear ends of the top of the outer wall of the support plate (304). A block (306) is installed in the middle of the telescopic frame (301). A power assembly (307) is installed on the right side of the outer wall of the block (306).

4. The high-efficiency pickling equipment for electroplating plate processing according to claim 3, characterized in that: The power assembly (307) includes a hydraulic rod (3071), and a push rod (3072) is fixedly connected to the output end of the hydraulic rod (3071). The outer wall of the push rod (3072) is slidably connected to the right end of the cleaning tank (1).

5. The high-efficiency pickling equipment for electroplating plate processing according to claim 2, characterized in that: A support frame (2048) is fixedly connected to the bottom of the outer wall of the motor (2041), and the support frame (2048) is installed on the rear side of the outer wall of the cleaning tank (1).

6. The high-efficiency pickling equipment for electroplating plate processing according to claim 4, characterized in that: A bracket three (3073) is installed on the outside of the hydraulic rod (3071), and the left side of the outer wall of the bracket three (3073) is fixedly connected to the right side of the outer wall of the cleaning tank (1).

7. The high-efficiency pickling equipment for electroplating plate processing according to claim 1, characterized in that: A support net (4) is fixedly connected to the upper part of the inner wall of the cleaning tank (1), and the support net (4) is installed on the top of the outer side of the pushing mechanism (3).

8. The high-efficiency pickling equipment for electroplating plate processing according to claim 1, characterized in that: The inner wall of the cleaning tank (1) is provided with grooves (5) on both the front and rear sides, and the interior of the grooves (5) is slidably connected to the front and rear ends of the outer wall of the support plate (304).

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