A rod clamping device for positioning and fixing the electrophoresis rods and electrophoresis frame.

Abstract

This utility model discloses a rod clamping device for positioning and fixing electrophoresis rods and electrophoresis frames. The rod clamping device includes a base that is assembled and fixed to the electrophoresis frame; and a self-locking clamp disposed on the base. The clamp has an opening area through which the electrophoresis rod can pass and be fixed within the clamp. The opening area of ​​the clamp can drive the two clamping parts of the clamp to flip outward to expand the opening, and the two clamping parts can be flipped inward through a reset structure to restore the opening degree of the expanded opening area. The device of this utility model is disposed on both sides of the electrophoresis frame, and the electrophoresis rod is positioned and fixed on the corresponding mounting rod of the electrophoresis frame by the clamping ring with a self-locking function. This eliminates the gap caused by buoyancy after entering the electrophoresis pool, improves the effect of electrophoretic coating, improves the consistency of coating quality, and reduces the rework rate, ultimately achieving the dual goals of improving production efficiency and extending equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of metal surface treatment technology, and in particular to a hanging rod clamping device for enhancing the effect of electrophoretic coating. Background Technology

[0002] In the field of metal surface treatment, electrophoretic coating is widely used due to its advantages such as uniform film formation and high coating rate. During the process, operators typically suspend the conductive rod carrying the workpiece from a fixed frame and then immerse the entire workpiece in an electrophoretic bath for electrophoretic coating. However, in actual production, it has been found that when the frame system is immersed in the electrophoretic solution, the suspension system formed by the workpiece and the rod experiences significant Archimedes' buoyancy, resulting in a dynamic gap of 0.5–2 mm at the contact point between the rod and the frame. This gap directly disrupts the integrity of the conductive circuit. The contact resistance at the gap can reach 8–12 times that of normal contact, leading to uneven current density distribution on the workpiece surface. This, in turn, causes coating thickness fluctuations exceeding the standard allowable range, severely affecting the consistency of coating quality. Even more seriously, during the electrophoretic film formation stage, charged resin particles continuously deposit abnormally in the gap area, forming a dense, insulating paint layer after curing. This secondary paint layer further exacerbates the deterioration of conductivity.

[0003] The current industry-standard solutions have significant drawbacks: operators need to stop the machine every 2-3 production cycles for manual cleaning, using tools such as metal scrapers to remove paint deposits from the rack contact surfaces. This operation is time-consuming and labor-intensive, and can damage the rack substrate, reduce equipment lifespan, and increase maintenance costs.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a clamping device for positioning and fixing electrophoresis hangers and electrophoresis frames, so as to improve the electrophoretic coating effect through the clamping device. Utility Model Content

[0005] The purpose of this invention is to provide a clamping device for positioning and fixing electrophoresis hanging rods and electrophoresis frames. The device is set on both sides of the electrophoresis frame and uses self-locking clamp rings to position and fix the electrophoresis hanging rods to the corresponding mounting rods of the electrophoresis frame. This eliminates the gaps caused by buoyancy after entering the electrophoresis pool, improves the effect of electrophoretic coating, improves the consistency of coating quality and reduces rework rate, and ultimately achieves the dual goals of improving production efficiency and extending equipment service life.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The present invention relates to a rod clamping device for positioning and fixing electrophoresis rods and electrophoresis frames. The rod clamping device is installed on both sides of the electrophoresis frame, and the two ends of the electrophoresis rods placed on the electrophoresis frame are fixed to the electrophoresis frame through the rod clamping device. The hanging rod clamping device includes: A base that is fixed to the electrophoresis frame; and A self-locking clamp is provided on the base, the clamp has an opening area, and the electrophoresis hanging rod can pass through the opening area and be fixed inside the clamp; The opening area of ​​the clamp can drive the two clamping parts of the clamp to flip outward to expand the opening, and the two clamping parts can be flipped inward through the reset structure to restore the opening degree of the expanded opening area.

[0007] Furthermore, the electrophoresis frame includes: Frame; and Mounting rods are installed on the two vertical bars of the frame, and the mounting rods are configured to extend upward at an angle from one end near the frame to the other end away from the frame; The angle between the mounting rod and the vertical rod is the installation position of the electrophoresis hanging rod; The hanging rod clamping device is installed at the connection between the mounting rod and the vertical rod.

[0008] Furthermore, the electrophoresis hanger includes a hanger and multiple workpiece fixing rods fixed to the hanger. The workpiece is placed on the workpiece fixing rod, and the hanger is fixed to the electrophoresis frame by the hanger clamping device.

[0009] Furthermore, the base of the hanging rod clamping device is configured as a cuboid structure, and the base is made of 316L stainless steel with a hard chrome plating finish on its surface. The clamp is integrated into the upper surface of the base; An arc-shaped groove is machined in the middle of the upper surface of the base, and the clamp is movably connected to the inner wall of the arc-shaped groove to adjust the opening degree of the opening area.

[0010] Furthermore, the fixture assembly includes: The arc-shaped portion, consisting of two separate clamps, forms a clamping ring for holding the electrophoresis rod; and A mounting housing connected to the arcuate portion and extending toward one end of the base, wherein a spring is provided between the mounting housing and the base; Pressing down the mounting housing and holding the spring can drive the ends of the two arc-shaped portions to separate from each other, thereby increasing the opening degree of the opening area; The two arc-shaped portions are rotatably connected by a pin mounted on the base.

[0011] Furthermore, both the mounting rod and the vertical rod are provided with mounting holes; The base is assembled and fixed to the electrophoresis frame by two connecting bolts.

[0012] Furthermore, the mounting housing includes a straight plate portion connected to the arcuate portion and a cylindrical portion formed at one end of the straight plate portion away from the arcuate portion; The internal space of the cylindrical part is used to house the spring, and a circular groove is machined at the position where the base mates with the spring. The lower end of the spring is connected to the circular groove, and the upper end of the spring is connected to the cylindrical part.

[0013] Furthermore, the connecting bolts are made of 40Cr alloy steel; The spring is made of SUS304 stainless steel.

[0014] Furthermore, the mounting housing is made of C17200 beryllium copper alloy and has a silver-plated surface.

[0015] Furthermore, the end of the hanging rod has a limiting part, and the outer diameter of the limiting part is larger than the outer diameter of the hanging rod.

[0016] In the above technical solution, the hanging rod clamping device provided by this utility model for positioning and fixing the electrophoresis hanging rod and the electrophoresis frame has the following beneficial effects: The device of this utility model is set on both sides of the electrophoresis frame, and the electrophoresis hanging rod is positioned and fixed on the corresponding mounting rod of the electrophoresis frame by a clamp ring with a self-locking function. This eliminates the gap caused by buoyancy after entering the electrophoresis pool, improves the effect of electrophoretic coating, improves the consistency of coating quality and reduces the rework rate, and ultimately achieves the dual goals of improving production efficiency and extending equipment service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 An exploded view of the hanging rod clamping device for positioning and fixing the electrophoresis hanging rod and electrophoresis frame provided in the embodiment of this utility model, showing its usage state; Figure 2 An enlarged view of the hanging rod clamping device for positioning and fixing the electrophoresis hanging rod and electrophoresis frame provided in the embodiment of this utility model, showing its usage state; Figure 3A schematic diagram of the hanging rod clamping device for positioning and fixing the electrophoresis hanging rod and electrophoresis frame provided in an embodiment of this utility model; Figure 4 An exploded view of the structure of the hanging rod clamping device for positioning and fixing the electrophoresis hanging rod and electrophoresis frame provided in the embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures: Hanging rod clamping device; 20. Electrophoresis frame; 30. Electrophoresis hanging rod; 22. Vertical rod; 23. Mounting rod; 32. Hanging rod; 33. Workpiece fixing rod; 34. Limiting part; 1. Base; 2. Clamp; 102. Arc-shaped groove; 103. Pin; 104. Connecting bolt; 105. Circular groove; 201. Arc-shaped part; 202. Opening; 203. Straight plate part; 204. Cylindrical part; 205. Spring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] See Figures 1 to 4 As shown; This embodiment discloses a rod clamping device for positioning and fixing the electrophoresis rod and the electrophoresis frame. The rod clamping device 10 is installed on both sides of the electrophoresis frame 20, and the two ends of the electrophoresis rod 30 placed on the electrophoresis frame 20 are fixed to the electrophoresis frame 20 by the rod clamping device 10. The hanging rod clamping device 10 includes: The base 1 is assembled and fixed with the electrophoresis frame 20; and A self-locking clamp 2 is provided on the base 1. The clamp 2 has an opening area, through which the electrophoresis hanging rod 30 can pass and be fixed inside the clamp. The opening area of ​​clamp 2 can drive the two clamping parts of clamp 2 to flip outward to expand the opening, and the two clamping parts can be flipped inward through the reset structure to restore the opening degree of the expanded opening area.

[0022] Specifically, this embodiment discloses a clamping device 10 for positioning and fixing the electrophoresis hanger 30 and the electrophoresis frame 20. It is installed on both sides of the electrophoresis frame 20 and mainly used to cooperate with the electrophoresis hanger 30 and clamp and fix it onto the electrophoresis frame 20. This prevents the electrophoresis hanger 30 from detaching from the electrophoresis frame 20 due to buoyancy after the workpiece enters the electrophoresis pool, thus avoiding gaps. In this embodiment, the clamping device 10 is assembled and fixed to the electrophoresis frame 20 via a base 1. After fixing, the opening area of ​​the clamp 2 on the device can precisely cooperate with the end of the electrophoresis hanger 30 that overlaps the electrophoresis frame 20, clamping and fixing the electrophoresis hanger 30 within the clamp 2, connecting it to the electrophoresis frame 20, and then performing the electrophoretic coating operation.

[0023] Preferably, the electrophoresis frame 20 of this embodiment includes a frame and mounting rods 22 installed on two vertical rods 21 of the frame. The mounting rods 22 are configured to extend upward at an angle from one end near the frame to the other end away from the frame. The angle between the mounting rods 22 and the vertical rods 21 is the installation position of the electrophoresis hanging rods 30. The hanging rod clamping device 10 is installed at the connection between the mounting rods 22 and the vertical rods 21.

[0024] In this embodiment, the electrophoresis hanging rod 30 includes a hanging rod 31 and multiple workpiece fixing rods 32 fixed to the hanging rod 31. The workpiece is placed on the workpiece fixing rod 32, and the hanging rod 31 is fixed to the electrophoresis frame 20 by the hanging rod clamping device 10.

[0025] Based on the structure of the electrophoresis frame 20 and the electrophoresis hanging rod 30 described above, the base 1 of the hanging rod clamping device 10 in this embodiment is configured as a cuboid structure, and the base 1 is made of 316L stainless steel, with the surface of the base 1 plated with hard chrome; secondly, the clamp 2 in this embodiment is integrated on the upper surface of the base 1. An arc-shaped groove 101 is machined in the middle of the upper surface of the base 1, and the clamp 2 is movably connected to the inner wall of the arc-shaped groove 101 to adjust the opening degree of the opening area.

[0026] In this embodiment, the base 1 is assembled and fixed with the vertical rod 21 and the mounting rod 22 of the electrophoresis frame 20. At the same time, the hanging rod clamping device 10 is symmetrically arranged at both ends of the electrophoresis frame 20 in this embodiment. More preferably, the fixture in this embodiment includes: The arc-shaped part 201, the two separate arc-shaped parts 201 of the clamps form a clamping ring for holding the electrophoresis rod 30; and A mounting housing is connected to the arc-shaped portion 201 and extends toward one end of the base 1. A spring 205 is provided between the mounting housing and the base 1. Pressing down on the mounting housing and holding the spring 205 can drive the ends of the two arc-shaped portions 201 to separate from each other to increase the opening degree of the opening area. The two arc-shaped portions 201 are rotatably connected by a pin 102 mounted on the base 1.

[0027] This embodiment further defines the structure of the hanging rod clamping device 10, which is assembled and fixed to the electrophoresis frame 20 via the base 1. A clamp 2 is provided on the base 1 to clamp and position the hanging rod 31. The clamp 2 in this embodiment has two clamping parts, including an arc-shaped part 201 and a mounting shell. The two arc-shaped parts 201 form a clamping ring for clamping the electrophoresis hanging rod 30, while the mounting shell is used to connect a spring 205 between itself and the base 1. When the spring 205 is in a compressed state, the upper ends of the two arc-shaped parts 201 separate to form an opening 202. The opening 202 is smaller than the outer diameter of the electrophoresis hanging rod 30. When the electrophoresis hanging rod 30 is pressed down, it drives the two arc-shaped parts 201 to flip outward to expand the opening 202. The electrophoresis hanging rod 30 is embedded inside the clamping ring. At this time, driven by the spring 205, the two arc-shaped parts 201 flip inward and reset, so that the electrophoresis hanging rod 30 is stuck in the clamping ring.

[0028] To facilitate the installation of the base 1 and the electrophoresis frame 20, the mounting rod 22 and the vertical rod 21 in this embodiment are provided with mounting holes 23; the base 1 is assembled and fixed to the electrophoresis frame 20 by two connecting bolts 103.

[0029] Preferably, the mounting housing of this embodiment includes a straight plate portion 203 connected to the arc-shaped portion 201 and a cylindrical portion 204 formed at one end of the straight plate portion 203 away from the arc-shaped portion 201; The internal space of the cylindrical part 204 is used to house the spring 205, and a circular groove 104 is machined at the position where the base 1 and the spring 205 mate. The lower end of the spring 205 is connected to the circular groove 104, and the upper end of the spring 205 is connected to the cylindrical part 204.

[0030] Preferably, the connecting bolt 103 in this embodiment is made of 40Cr alloy steel; the spring 205 is a SUS304 stainless steel spring.

[0031] Preferably, the mounting housing in this embodiment is made of C17200 beryllium copper alloy and has a silver-plated surface.

[0032] In the above technical solution, the hanging rod clamping device provided by this utility model for positioning and fixing the electrophoresis hanging rod and the electrophoresis frame has the following beneficial effects: The device of this utility model is set on both sides of the electrophoresis frame 20, and the electrophoresis hanging rod 30 is positioned and fixed on the corresponding mounting rod 22 of the electrophoresis frame 20 by a clamp ring with a self-locking function. This eliminates the gap caused by buoyancy after entering the electrophoresis pool, improves the effect of electrophoretic coating, improves the consistency of coating quality and reduces the rework rate, and ultimately achieves the dual goals of improving production efficiency and extending the service life of equipment.

[0033] The device of this invention can eliminate dynamic gaps and prevent paint peeling. Through the elastic deformation and self-locking function of the hanging rod clamping device 10, the 0.5~2mm dynamic gap caused by the buoyancy of the electrophoretic liquid is offset in real time, eliminating the abnormal deposition space of charged resin particles from a physical level, reducing the formation rate of insulating paint peeling by more than 90%, and effectively preventing the deterioration of conductivity.

[0034] The device of this invention achieves the functions of improving conductivity stability and optimizing quality. It adopts a composite conductive material manufacturing mechanism to ensure uniform current density distribution on the workpiece surface, achieves the standard coating thickness qualification rate, and reduces rework rate.

[0035] Another benefit of this invention is that it extends equipment life and doubles efficiency, eliminates the need for manual scraping and cleaning, avoids scratching the bracket substrate by rigid tools, extends equipment life, reduces the frequency of single-line downtime maintenance, reduces annual maintenance costs, and improves overall equipment efficiency.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A clamping device for positioning and fixing electrophoresis hangers and electrophoresis frames, characterized in that, The hanging rod clamping device (10) is installed on both sides of the electrophoresis frame (20), and the two ends of the electrophoresis hanging rod (30) placed on the electrophoresis frame (20) are fixed to the electrophoresis frame (20) through the hanging rod clamping device (10); The hanging rod clamping device (10) includes: A base (1) fixed to the electrophoresis frame (20); and A self-locking clamp (2) is provided on the base (1). The clamp (2) has an opening area, through which the electrophoresis hanging rod (30) can pass and be fixed in the clamp (2). The opening area of ​​the clamp (2) can drive the two clamp parts of the clamp (2) to flip outward to expand the opening, and the two clamp parts can flip inward through the reset structure to restore the opening degree of the expanded opening area.

2. The clamping device for positioning and fixing the electrophoresis hanging rod and the electrophoresis frame according to claim 1, characterized in that, The electrophoresis frame (20) includes: Frame; and Mounting rods (22) are installed on the two vertical rods (21) of the frame, and the mounting rods (22) are configured to extend upward at an angle from one end near the frame to the other end away from the frame; The angle between the mounting rod (22) and the vertical rod (21) is the installation position of the electrophoresis hanging rod (30); The hanging rod clamping device (10) is installed at the connection between the mounting rod (22) and the vertical rod (21).

3. The clamping device for positioning and fixing the electrophoresis hanging rod and the electrophoresis frame according to claim 2, characterized in that, The electrophoresis hanger (30) includes a hanger (31) and multiple workpiece fixing rods (32) fixed to the hanger (31). The workpiece is placed on the workpiece fixing rod (32), and the hanger (31) is fixed to the electrophoresis frame (20) by the hanger clamping device (10).

4. The hanging rod clamping device for positioning and fixing electrophoresis hanging rod and electrophoresis frame according to claim 2, characterized in that, The base of the hanging rod clamping device (10) is configured as a cuboid structure, and the base (1) is made of 316L stainless steel and the surface of the base (1) is plated with hard chrome. The clamp (2) is integrated into the upper surface of the base (1); An arc-shaped groove (101) is machined at the middle position of the upper surface of the base (1), and the clamp is movably connected to the inner wall of the arc-shaped groove (101) to adjust the opening degree of the opening area.

5. The hanging rod clamping device for positioning and fixing electrophoresis hanging rod and electrophoresis frame according to claim 4, characterized in that, The fixture assembly includes: The arc-shaped portion (201), consisting of two separate clamps, forms a clamping ring for holding the electrophoresis rod (30); and A mounting housing connected to the arcuate portion (201) and extending toward the end of the base (1), wherein a spring (205) is provided between the mounting housing and the base (1). Pressing down the mounting housing and holding the spring (205) can drive the ends of the two arcuate portions (201) to separate from each other to increase the opening degree of the opening area; The two arc-shaped portions (201) are rotatably connected by a pin (102) mounted on the base (1).

6. The hanging rod clamping device for positioning and fixing electrophoresis hanging rod and electrophoresis frame according to claim 5, characterized in that, Both the mounting rod (22) and the vertical rod (21) are provided with mounting holes (23); The base (1) is assembled and fixed to the electrophoresis frame (20) by two connecting bolts (103).

7. The hanging rod clamping device for positioning and fixing the electrophoresis hanging rod and the electrophoresis frame according to claim 6, characterized in that, The mounting housing includes a straight plate portion (203) connected to the arc-shaped portion (201) and a cylindrical portion (204) formed at one end of the straight plate portion (203) away from the arc-shaped portion (201). The internal space of the cylindrical part (204) is used to house the spring (205), and a circular groove (104) is machined at the position where the base (1) and the spring (205) cooperate. The lower end of the spring (205) is connected to the circular groove (104), and the upper end of the spring (205) is connected to the cylindrical part (204).

8. The hanging rod clamping device for positioning and fixing electrophoresis hanging rod and electrophoresis frame according to claim 7, characterized in that, The connecting bolt (103) is made of 40Cr alloy steel; The spring (205) is made of SUS304 stainless steel.

9. The hanging rod clamping device for positioning and fixing electrophoresis hanging rod and electrophoresis frame according to claim 7, characterized in that, The mounting housing is made of C17200 beryllium copper alloy and is silver-plated.

10. The hanging rod clamping device for positioning and fixing electrophoresis hanging rod and electrophoresis frame according to claim 3, characterized in that, The end of the hanging rod (31) has a limiting part (33), and the outer diameter of the limiting part (33) is larger than the outer diameter of the hanging rod (31).

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