Clamp for electrophoretic coating

Abstract

The utility model relates to the technical field of electrophoretic coating, in particular to a clamp for electrophoretic coating, which comprises an electrophoretic coating box, chutes are equidistantly arranged on the left side and the right side of the outer wall of the electrophoretic coating box, a clamping mechanism is arranged on the inner wall of the electrophoretic coating box, and the clamping mechanism is used for clamping a workpiece. Lifting mechanisms are mounted on the left side and the right side of the top wall of the electrophoretic coating box correspondingly. The hydraulic rods stretch out and draw back to pull the supporting arms, so that the supporting arms drive the connecting rods to rotate, the connecting rods rotate to enable the clamping plates at the tail ends of the supporting arms to gather towards the middle, the outer walls of the clamping plates are attached to the two sides of a workpiece all the time, the bottom walls of the long plates are attached to the top wall of the workpiece, and the workpiece is prevented from floating out of the electrophoresis liquid level due to buoyancy; the multiple fixing rods can disperse the weight of the workpiece and prevent deformation after loading, through cooperation of the clamping plates and the long plates, the workpiece can be located in the middle of the electrophoretic coating box all the time, and the situation that the coating thickness is not uniform due to position deviation of the workpiece is prevented.

Description

Technical Field

[0001] This utility model relates to the field of electrophoretic coating technology, and in particular to a fixture for electrophoretic coating. Background Technology

[0002] Electrophoretic coating is a coating process that uses an electric field to cause paint particles to migrate in a specific direction and deposit on the surface of a workpiece to form a paint film. Its principle is based on the electrophoretic phenomenon in colloid chemistry. Charged paint particles move towards electrodes with opposite charges in a DC electric field and are eventually adsorbed on the surface of the workpiece to form a uniform coating.

[0003] Electrophoretic coating fixtures are devices used to fix and support workpieces during the electrophoretic coating process. They ensure that the workpieces maintain the correct position and posture in the electrophoresis tank, preventing them from moving, shaking, or floating during the electrophoresis process, and ensuring the accuracy and consistency of the coating.

[0004] Existing electrophoretic coating fixtures, through reasonable design and clamping methods, ensure uniform contact of all parts of the workpiece with the electrophoretic solution, avoiding uneven coating and missed coating, improving coating quality and performance, facilitating workpiece loading, unloading, and transportation, and enabling rapid placement and removal of workpieces into and from the electrophoresis tank, meeting the needs of large-scale assembly line production, improving production efficiency, and preventing collisions and friction between the workpiece and the electrophoresis tank wall and other components during the electrophoresis process, thus avoiding damage to the workpiece surface. However, insufficient conductive contact area and pressure result in high contact resistance between the workpiece and the fixture, and unreasonable contact point design creates local conductive blind spots, leaving parts of the workpiece without coating, generating electric sparks during electrophoresis, and damaging the fixture and workpiece surface. Using large contact area copper alloy contacts, with silver and gold plating to reduce contact resistance, and incorporating an automatic elastic clamping mechanism, still suffers from problems such as insufficient cross-sectional area and low material strength of the support arm and suspension rod load-bearing components, deformation under load, overall fixture center of gravity shift, swaying and tilting during suspension, workpiece position shift, and uneven coating thickness. Utility Model Content

[0005] The purpose of this utility model is to provide a fixture for electrophoretic coating, which solves the problems of (small cross-sectional area and low material strength of the support arm and suspension rod load-bearing components, deformation under load, overall center of gravity shift of the fixture, swaying and tilting during suspension, workpiece position shift, resulting in uneven coating thickness).

[0006] To achieve the above objectives, this utility model provides a fixture for electrophoretic coating, including an electrophoretic coating box. The outer wall of the electrophoretic coating box has equally spaced sliding grooves on both the left and right sides. The inner wall of the electrophoretic coating box is provided with a clamping mechanism for clamping workpieces. The top wall of the electrophoretic coating box has lifting mechanisms installed on both the left and right sides for raising and lowering the clamping mechanism. The clamping mechanism includes a fixed frame disposed on the inner wall of the electrophoretic coating box. A fixed plate is fixedly connected to the bottom of the fixed frame. Hydraulic rods are installed on the front and rear sides of the top wall of the fixed plate. Connecting rods are rotatably connected to the left and right sides of the bottom of the fixed plate. Multiple support arms are fixedly connected at equal intervals to the outer walls of the connecting rods. The ends of the hydraulic rods are connected to the top ends of the support arms. A limit assembly is installed in the middle of the bottom wall of the fixed plate.

[0007] The limiting component includes a support plate, which is fixedly connected to the middle of the bottom wall of the fixed plate, and a long plate is fixedly connected to the bottom of the support plate.

[0008] (A clamping plate is fixedly connected to the bottom inner side of the support arm, and multiple fixing rods are fixedly connected at equal intervals to the lower middle part of the outer wall of the clamping plate).

[0009] The lifting mechanism includes a fixed block, which is fixedly connected to the left and right sides of the outer wall of the electrophoretic coating box. Multiple limiting blocks are fixedly connected at equal intervals to the top wall of the electrophoretic coating box. A rotating shaft is rotatably connected to the inner wall of the limiting block. A drive assembly is installed on the outer wall of the fixed block.

[0010] The drive assembly includes a motor, which is fixedly connected to the upper part of the outer wall of the fixed block. A turntable is fixedly connected to the top of the rotating shaft. Multiple turntables are connected by belt drive. The output end of the motor is fixedly connected to the top of the rear turntable.

[0011] Among them, (a slider is threadedly connected to the lower part of the outer wall of the rotating shaft, the inner wall of the slider is fixedly connected to the outer wall of the fixed frame, and the slider is slidably connected to the inner wall of the slide groove).

[0012] (A controller is installed on the right side of the electrophoretic coating box, and a display screen is installed on the upper middle part of the front side of the outer wall of the controller).

[0013] Among them, (the bottom of the display screen is provided with control buttons, which are equidistantly installed on the front middle of the outer wall of the controller).

[0014] This utility model relates to a fixture for electrophoretic coating.

[0015] 1. In this utility model, the extension and retraction of the hydraulic rod pulls the support arm, causing the support arm to drive the connecting rod to rotate. The rotation of the connecting rod causes the clamping plate at the end of the support arm to converge towards the center, ensuring that the outer wall of the clamping plate is always in contact with both sides of the workpiece. Meanwhile, the bottom wall of the long plate is in contact with the top wall of the workpiece, preventing the workpiece from floating out of the electrophoretic coating liquid due to buoyancy. Multiple fixing rods can distribute the weight of the workpiece and prevent deformation under load. Through the cooperation of the clamping plate and the long plate, the workpiece can always be kept in the middle position of the electrophoretic coating box, preventing the workpiece from shifting position and causing uneven coating thickness.

[0016] 2. In this utility model, the rotation of the motor causes the two turntables to rotate synchronously. The turntables drive the bottom rotating shaft to rotate synchronously on the inner wall of the limiting block. The rotation of the rotating shaft drives the slider to slide up and down on the inner wall of the slide groove, which can raise and lower the clamping mechanism. When not in use, the clamping mechanism can be raised to prevent the clamping mechanism from being soaked in the electrophoretic solution for a long time. The electrophoretic solution seeps in and causes corrosion. The corrosion products of the clamping mechanism contaminate the electrophoretic solution, which leads to a decrease in the structural strength of the clamping mechanism and a shortening of the service life of the clamp. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a fixture for electrophoretic coating proposed in this utility model;

[0019] Figure 2 This is a front view of a fixture for electrophoretic coating proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of a fixture for electrophoretic coating proposed in this utility model;

[0021] Figure 4 This is a partial structural schematic diagram of a fixture for electrophoretic coating proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the lifting mechanism of a clamp for electrophoretic coating proposed in this utility model.

[0023] 1. Electrophoretic coating box; 2. Slide chute; 3. Clamping mechanism; 301. Fixing frame; 302. Hydraulic rod; 303. Fixing plate; 304. Connecting rod; 305. Support arm; 306. Clamping plate; 307. Fixing rod; 308. Limiting assembly; 3081. Support plate; 3082. Long plate; 4. Lifting mechanism; 401. Fixing block; 402. Slider; 403. Rotating shaft; 404. Limiting block; 405. Drive assembly; 4051. Motor; 4052. Belt; 4053. Turntable; 5. Controller; 6. Control button; 7. Display screen. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0025] Please see Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a fixture for electrophoretic coating, comprising an electrophoretic coating box 1. The outer wall of the electrophoretic coating box 1 has equally spaced sliding grooves 2 on both the left and right sides. The inner wall of the electrophoretic coating box 1 is provided with a clamping mechanism 3 for clamping workpieces. The top wall of the electrophoretic coating box 1 has lifting mechanisms 4 installed on both the left and right sides for raising and lowering the clamping mechanism 3. The clamping mechanism 3 includes a fixed frame 301, which is disposed on the inner wall of the electrophoretic coating box 1. A fixed plate 303 is fixedly connected to the bottom of the fixed frame 301. Hydraulic rods 302 are installed on the front and rear sides of the top wall of the fixed plate 303. Connecting rods 304 are rotatably connected to the bottom left and right sides of 303. Multiple support arms 305 are fixedly connected at equal intervals to the outer wall of the connecting rods 304. The end of the hydraulic rod 302 is connected to the top of the support arm 305. A limiting component 308 is installed in the middle of the bottom wall of the fixing plate 303. The limiting component 308 includes a support plate 3081. The support plate 3081 is fixedly connected to the middle of the bottom wall of the fixing plate 303. A long plate 3082 is fixedly connected to the bottom of the support plate 3081. A clamping plate 306 is fixedly connected to the bottom of the inner side of the support arm 305. Multiple fixing rods 307 are fixedly connected at equal intervals to the lower middle part of the outer wall of the clamping plate 306.

[0026] Specifically, the extension and retraction of the hydraulic rod 302 pulls the support arm 305, causing the support arm 305 to drive the connecting rod 304 to rotate. The rotation of the connecting rod 304 causes the clamping plate 306 at the end of the support arm 305 to converge towards the center, ensuring that the outer wall of the clamping plate 306 is always in contact with the sides of the workpiece. Meanwhile, the bottom wall of the long plate 3082 is in contact with the top wall of the workpiece, preventing the workpiece from floating out of the electrophoretic coating liquid due to buoyancy. Multiple fixing rods 307 can distribute the weight of the workpiece and prevent deformation under load. Through the cooperation of the clamping plate 306 and the long plate 3082, the workpiece can always be kept in the middle position of the electrophoretic coating box 1, preventing the workpiece from shifting position and causing uneven coating thickness.

[0027] Please see Figure 1 , Figure 2 and Figure 5The lifting mechanism 4 includes a fixed block 401, which is fixedly connected to the left and right sides of the outer wall of the electrophoretic coating box 1. Multiple limit blocks 404 are fixedly connected at equal intervals on the top wall of the electrophoretic coating box 1. A rotating shaft 403 is rotatably connected to the inner wall of the limit block 404. A drive assembly 405 is installed on the outer wall of the fixed block 401. The drive assembly 405 includes a motor 4051, which is fixedly connected to the upper middle part of the outer wall of the fixed block 401. A turntable 4053 is fixedly connected to the top of the rotating shaft 403. Multiple turntables 4053 are connected by a belt 4052. The output end of the motor 4051 is fixedly connected to the top of the rear turntable 4053. A slider 402 is threadedly connected to the lower middle part of the outer wall of the rotating shaft 403. The inner wall of the slider 402 is fixedly connected to the outer wall of the fixed frame 301. The slider 402 is slidably connected to the inner wall of the slide groove 2.

[0028] Specifically, the rotation of motor 4051 causes the two turntables 4053 to rotate synchronously. The turntables 4053 drive the bottom rotating shaft 403 to rotate synchronously on the inner wall of the limiting block 404. The rotation of the rotating shaft 403 drives the slider 402 to slide up and down on the inner wall of the slide groove 2, which can raise and lower the clamping mechanism 3. When not in use, the clamping mechanism 3 can be raised to prevent the clamping mechanism 3 from being soaked in the electrophoresis solution for a long time. The electrophoresis solution seeps in and causes corrosion. The corrosion products of the clamping mechanism 3 contaminate the electrophoresis solution, which leads to a decrease in the structural strength of the clamping mechanism 3 and a shortening of the service life of the clamp.

[0029] Please see Figure 1 , Figure 2 and Figure 3 A controller 5 is installed on the right side of the electrophoretic coating box 1. A display screen 7 is installed on the upper middle part of the front side of the outer wall of the controller 5. A control button 6 is provided at the bottom of the display screen 7. The control button 6 is equidistantly installed on the middle part of the front side of the outer wall of the controller 5.

[0030] Specifically, controller 5 is responsible for receiving sensor signals, performing logical operations, and outputting control commands to achieve automation and precision in the electrophoretic coating process. The operator sets parameters and monitors real-time data through control button 6, and triggers audible and visual alarms and automatic shutdown in case of fault. Display screen 7 displays the mechanical movement status of the fixture and provides real-time feedback on whether the position of each component of the fixture is normal and whether there are any abnormalities such as jamming or loosening.

[0031] Working principle: The extension and retraction of the hydraulic rod 302 triggers a series of mechanical linkage reactions, which pulls the support arm 305, causing the support arm 305 to drive the connecting rod 304 to rotate. The rotation of the connecting rod 304 causes the clamping plate 306 at the end of the support arm 305 to converge towards the center, ensuring that the outer wall of the clamping plate 306 is always in close contact with both sides of the workpiece. At the same time, the bottom wall of the long plate 3082 will be in contact with the top wall of the workpiece, which can effectively prevent the workpiece from floating out of the electrophoretic coating liquid due to buoyancy. Multiple fixing rods 307 are evenly distributed, which can distribute the weight of the workpiece, thereby avoiding deformation of the workpiece under load. Through the precise cooperation of the clamping plate 306 and the long plate 3082, it can be ensured that the workpiece is always in the middle position of the electrophoretic coating box 1, which can prevent the workpiece from shifting and thus avoid the problem of uneven coating thickness.

[0032] The rotation of motor 4051 causes the two turntables 4053 to rotate synchronously. The rotation of turntables 4053 drives the rotating shaft 403 located at its bottom to rotate synchronously within the inner wall of the limiting block 404. The rotation of the rotating shaft 403 further drives the slider 402 to slide up and down within the inner wall of the slide groove 2. This sliding mechanism enables the clamping mechanism 3 to lift and lower. When not in use, the clamping mechanism 3 can be raised to prevent it from being immersed in the electrophoretic solution for a long time. This prevents the electrophoretic solution from seeping into the clamping mechanism 3, avoiding rust, and also prevents the corrosion products of the clamping mechanism 3 from contaminating the electrophoretic solution. This prevents the structural strength of the clamping mechanism 3 from decreasing and extends the service life of the clamp.

[0033] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A fixture for electrophoretic coating, comprising an electrophoretic coating box, characterized in that: The outer wall of the electrophoretic coating box is provided with sliding grooves at equal intervals on both the left and right sides. The inner wall of the electrophoretic coating box is provided with a clamping mechanism, which is used to clamp the workpiece. The top wall of the electrophoretic coating box is provided with a lifting mechanism on both the left and right sides, which is used to lift the clamping mechanism. The clamping mechanism includes a fixed frame, which is installed on the inner wall of the electrophoretic coating box. A fixed plate is fixedly connected to the bottom of the fixed frame. Hydraulic rods are installed on the front and rear sides of the top wall of the fixed plate. Connecting rods are rotatably connected to the left and right sides of the bottom of the fixed plate. Multiple support arms are fixedly connected at equal intervals to the outer wall of the connecting rods. The end of the hydraulic rod is connected to the top of the support arm. A limit component is installed in the middle of the bottom wall of the fixed plate.

2. The fixture for electrophoretic coating according to claim 1, characterized in that: The limiting component includes a support plate, which is fixedly connected to the middle of the bottom wall of the fixed plate, and a long plate is fixedly connected to the bottom of the support plate.

3. The fixture for electrophoretic coating according to claim 1, characterized in that: A clamping plate is fixedly connected to the bottom inner side of the support arm, and multiple fixing rods are fixedly connected at equal intervals to the lower middle part of the outer wall of the clamping plate.

4. The fixture for electrophoretic coating according to claim 1, characterized in that: The lifting mechanism includes a fixed block, which is fixedly connected to the left and right sides of the outer wall of the electrophoretic coating box. Multiple limiting blocks are fixedly connected at equal intervals to the top wall of the electrophoretic coating box. A rotating shaft is rotatably connected to the inner wall of the limiting block. A drive assembly is installed on the outer wall of the fixed block.

5. A fixture for electrophoretic coating according to claim 4, characterized in that: The drive assembly includes a motor, which is fixedly connected to the upper part of the outer wall of the fixed block. A turntable is fixedly connected to the top of the rotating shaft. Multiple turntables are connected by belt drive. The output end of the motor is fixedly connected to the top of the rear turntable.

6. A fixture for electrophoretic coating according to claim 4, characterized in that: A slider is threadedly connected to the lower part of the outer wall of the rotating shaft. The inner wall of the slider is fixedly connected to the outer wall of the fixed frame, and the slider is slidably connected to the inner wall of the groove.

7. A fixture for electrophoretic coating according to claim 1, characterized in that: A controller is installed on the right side of the electrophoretic coating box, and a display screen is installed on the upper middle part of the front side of the outer wall of the controller.

8. A fixture for electrophoretic coating according to claim 7, characterized in that: The bottom of the display screen is equipped with control buttons, which are equidistantly installed on the front center of the outer wall of the controller.

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