Support assembly for an electrophoretic sled, electrophoretic sled, and electrophoretic delivery system

Abstract

The present application relates to the technical field of vehicle painting, in particular to a supporting assembly for an electrophoresis sliding sledge, the electrophoresis sliding sledge and an electrophoresis conveying system. The supporting assembly comprises a bracket, a locking piece, a first elastic piece and a second elastic piece. The locking piece has an unlocking state and a locking state during rotation around the axis of the shaft body. In the unlocking state, the locking piece is in abutting cooperation with the first elastic piece to limit the movement of the pressing plane to the bearing plane, and the distance between the bearing plane and the pressing plane is greater than the thickness of the workpiece to be fixed. In the locking state, the locking piece is in abutting cooperation with the second elastic piece, and the second elastic piece has a tendency to press the pressing plane against the workpiece to be fixed. The elastic force exerted by the second elastic piece on the locking piece is transmitted to the pressing plane, realizing the close fit between the pressing plane and the sheet metal piece. The fit surface will not have electrophoretic liquid seepage, and the conductive surface will not have electrophoretic paint, which will not affect the conduction. The ablation and melting of the sheet metal piece caused by electrification in the electrophoresis process are prevented.

Description

Technical Field

[0001] This invention relates to the field of vehicle coating technology, specifically to a support assembly, electrophoresis skid, and electrophoresis conveying system for an electrophoresis skid. Background Technology

[0002] Currently, automotive pretreatment and electrophoresis production lines use either 30° or 45° inlet / outlet troughs or 360° rotating conveyor lines. To meet the demands of lightweight and corrosion-resistant vehicles, many car brands have introduced models with aluminum alloy structures. In electrophoresis production lines using slanted inlet / outlet pretreatment, the lower body is positioned at four holes and mounted on the corresponding support structure of the electrophoresis skid. After a series of processes including pre-degreasing, degreasing, washing, phosphating, electrophoresis, spraying, and drying, a layer of electrophoretic paint often adheres to the conductive surface of the electrophoretic skid support structure. After multiple cycles, the paint buildup on the conductive surface of the electrophoretic skid support structure increases. Because electrophoretic paint is non-conductive, the conductive contact area between the body positioning holes and the support structure decreases, weakening the conductivity. When this situation is used for transporting vehicles with four aluminum alloy positioning holes, aluminum has a lower melting point (660℃, compared to iron's melting point of 1538℃). Under a large electrophoretic current (peak value of about 500A), the current density at the contact points is high, the resistance is high, and the heat generation is extremely high. This causes the positioning holes in the vehicle body to ablate and melt, which in turn affects the overall strength of the vehicle body and, in severe cases, can even lead to the scrapping of the entire vehicle body. Summary of the Invention

[0003] One objective of this invention is to provide a support assembly for an electrophoresis skid, so as to solve the problems of poor conductivity and ablation and melting that are easily caused by the support structure in the prior art; another objective is to provide an electrophoresis skid; and a third objective is to provide an electrophoresis delivery system.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A support assembly for an electrophoresis skid, comprising:

[0006] The bracket has a bearing surface for supporting the workpiece to be fixed.

[0007] The locking component includes a shaft perpendicular to the bearing plane and a locking cap disposed at one end of the shaft. The shaft passes through the bracket, and the locking cap has a pressing plane that is directly opposite to and parallel to the bearing plane. The shaft is eccentrically connected to the pressing plane. The locking component has an unlocked state and a locked state during rotation around the axis of the shaft.

[0008] The first elastic element and the second elastic element are disposed on the side of the bracket away from the bearing plane;

[0009] In the unlocked state, the locking member abuts against the first elastic member to restrict the movement of the pressing plane toward the bearing plane, and the distance between the bearing plane and the pressing plane is greater than the thickness of the workpiece to be fixed; in the locked state, the locking member abuts against the second elastic member, and the second elastic member has a tendency to cause the pressing plane to press against the workpiece to be fixed.

[0010] According to the above-mentioned technical means, the top locking cap of the locking member in this embodiment of the application has an eccentric structure relative to the shaft. By controlling the rotation of the shaft around its own axis, the locking member can cooperate with the first elastic member and the second elastic member respectively, thereby realizing the switching of the locking member between the unlocked state and the locked state. In the unlocked state, it is convenient to pre-fix the vehicle body. In the locked state, the support assembly presses the sheet metal parts of the vehicle body through the pressing plane of the locking cap and the bearing plane of the bracket to fix the vehicle body, and realizes electrical connection with the sheet metal parts through the pressing plane of the locking cap as a conductive surface; during the process of the locking member rotating from the unlocked state to the locked state, the second elastic member locks the first elastic member. The elastic force applied by the fastener is transmitted to the clamping plane, achieving a tight fit between the clamping plane and the sheet metal part. No electrophoretic liquid will seep into the mating surface, and no electrophoretic paint will be generated on the conductive surface, affecting conductivity. This prevents the sheet metal part from being burned and melted when the support assembly is unloaded and not carrying the workpiece to be fixed for electrophoresis. Conductive paint will be present on the clamping plane. When it is mounted on the vehicle body in subsequent processes, during the process of the locking part rotating from the unlocked state to the locked state, the clamping plane rotates relative to the sheet metal part and fits against it. Dry friction exists between the clamping plane and the sheet metal part, which can scrape off the electrophoretic paint attached to the clamping plane, resulting in a clean conductive surface.

[0011] Furthermore, the locking member also includes a rotating arm vertically connected to the shaft. The first elastic member includes a first plate and a first bent section. The first bent section bends relative to the first plate in a direction away from the bracket. The first bent section is used to guide the rotating arm to move to the side of the first plate facing the bracket. In the unlocked state, the rotating arm abuts against the surface of the first plate facing the bracket.

[0012] According to the above technical means, the first plate provides axial support to the locking member through the cooperation of the rotating arm and the first plate, thereby achieving the unlocked state. The first bent section serves to guide the rotating arm. As the locking member rotates from the locked state to the unlocked state, the rotating arm moves axially along the shaft through the guidance of the first bent section. The entire locking member moves along the shaft axially under the drive of the rotating arm. The first plate can provide a larger support area and provides more stable support when cooperating with the rotating arm.

[0013] Furthermore, the second elastic member includes a second plate and a second bending section. The second bending section bends relative to the second plate in a direction close to the bracket. The second bending section is used to guide the rotating arm to move to the side of the second plate away from the bracket. In the locked state, the rotating arm abuts against the surface of the second plate away from the bracket.

[0014] According to the above technical means, the locking state is achieved by the elastic force of the second plate on the locking member in the Z direction through the cooperation of the rotating arm and the second plate. The rotating arm moves in the Z direction through the guiding action of the second bent section. The locking member as a whole moves along the Z direction under the drive of the rotating arm, and the pressing plane gradually approaches the bearing plane, firmly fixing the sheet metal part between the pressing plane and the bearing plane. The second plate can provide a larger mating area, which can provide more stable elastic contact when it cooperates with the rotating arm. It can also increase the rotational stroke with dry friction between the pressing plane and the sheet metal part, which is more conducive to scraping off the electrophoretic paint attached to the pressing plane and obtaining a clean conductive surface.

[0015] Furthermore, the first plate is further away from the support relative to the second plate, and the distance between the first plate and the second plate in the axial direction of the shaft is smaller than the size of the rotating arm.

[0016] According to the above technical means, when the rotating arm switches positions between the first plate and the second plate, it can ensure that the locking component has a certain displacement in the Z direction, thereby realizing the switching between the unlocked state and the locked state.

[0017] Furthermore, one end of the second plate is fixed to the bracket, while the other end is a free end.

[0018] Based on the above technical means, the cantilever-type fixing method of the second plate can make the free end more likely to deform relative to the fixed end, providing a larger elastic force.

[0019] Furthermore, a protective block is provided on the support, the protective block is close to the free end of the second plate, the protective block extends out of the second plate on the side away from the support and is located on the movement path of the rotating arm.

[0020] According to the above technical means, the protective block is located near the free end of the second plate and can be used to prevent the side or end face of the free end of the second plate from being damaged by external force. The protective block is on the movement path of the rotating arm and can prevent the rotating arm from rotating excessively, thus avoiding damage to the mechanism.

[0021] Furthermore, an adjustment component is provided between the second plate and the support, the adjustment component being used to adjust the distance between the free end of the second plate and the support.

[0022] Based on the above technical means, the gap between the free end of the second plate and the bracket can be adjusted, the pressing degree of the pressing plane on the sheet metal part can be adjusted as needed, and the gap between the free end of the second plate and the bracket can be adjusted according to the sheet metal parts of different thicknesses, so that the support assembly can be used to fix sheet metal parts of different thicknesses.

[0023] Furthermore, a first protrusion is provided on the bearing plane, and when the locking member is in the unlocked state, the pressing plane is directly opposite the first protrusion.

[0024] According to the above technical means, by setting a first protrusion, the pressing plane is directly opposite the first protrusion in the unlocked state. After the vehicle body falls and hits the locking cap, the first protrusion can block the pressing plane and reduce the impact of the locking component on the first elastic component.

[0025] Furthermore, a second protrusion is provided on the bearing plane, the height of the second protrusion being less than the height of the first protrusion. When the locking member is in the locked state, the pressing plane is directly opposite the second protrusion.

[0026] According to the above technical means, the height of the second protrusion is less than the height of the first protrusion, which provides downward movement space for the locking cap to ensure that the pressing plane can contact the sheet metal part downward to achieve the locking state.

[0027] Furthermore, the side of the shaft has a limiting cut surface parallel to the axial direction, and a third elastic element is provided on the bracket. In the unlocked state, the third elastic element is attached to the limiting cut surface to limit the rotation of the shaft.

[0028] According to the above technical means, the third elastic element plays the role of restricting the rotation of the shaft, and further restricts the tendency of the locking element to leave the unlocked state, so that the locking element can be stably locked in the unlocked state without rotation or shaking, and the support hole on the vehicle body can be more easily assembled onto the locking element.

[0029] Furthermore, the limiting cut surfaces are respectively disposed on opposite sides of the shaft, and at least two third elastic elements are provided, each used to cooperate with the limiting cut surfaces on both sides of the shaft; when the locking element is in the unlocked state, after the shaft rotates 180°, the locking element is in the locked state.

[0030] According to the above technical means, when the shaft is in the locked state after rotating 180°, the limiting cut surfaces on both sides of the shaft interchange positions, and the two third elastic elements still cooperate with the limiting cut surfaces on both sides of the shaft respectively, which restricts the tendency of the locking element to disengage from the locked state, so that the locking element can be stably kept in the locked state.

[0031] Furthermore, the bracket includes a support platform, a support member, and a base connected in sequence. The support plane is located on the side of the support platform away from the base. The shaft of the locking member passes through the support platform and the base. The first elastic member and the second elastic member are disposed on the side of the base away from the support platform.

[0032] According to the above technical means, the bearing supports the workpiece to be fixed, the shaft and the bearing platform are fitted with a clearance to ensure that the shaft can rotate relative to the bearing platform, the base is used for the main structure connection of the electrophoretic skid, and is used to set the first elastic element and the second elastic element, the shaft and the base are fitted with a clearance to ensure that the shaft can rotate relative to the base.

[0033] Furthermore, the shaft includes a first shaft segment and a second shaft segment coaxially connected, the first shaft segment passing through the support platform, the second shaft segment passing through the base, and the locking cap connected to the first shaft segment.

[0034] According to the above technical means, during use, the first shaft segment can be inserted into the bracket from one side, and then the second shaft segment can be inserted into the bracket from the other side. Then the first shaft segment and the second shaft segment can be connected to achieve the assembly of the shaft and the bracket.

[0035] Furthermore, the support member has an open structure.

[0036] According to the above technical means, the support is used to connect the bearing platform and the base. The support is designed as an open structure, which can drain the electrophoretic liquid and reduce the accumulation of electrophoretic liquid at the mating point between the locking member and the bracket, thus affecting the movement of the locking member.

[0037] An electrophoresis sled, comprising:

[0038] frame;

[0039] Multiple support assemblies are provided and all connected to the frame. The multiple support assemblies are all located on the same side of the frame, and the brackets of the support assemblies are connected to the frame.

[0040] Based on the aforementioned technical means, the electrophoretic skid, through a support assembly, is used to mount, press, and transport the vehicle body during pretreatment and electrophoresis. During the rotation of the locking component from the unlocked state to the locked state, a tight fit is achieved between the pressing plane and the sheet metal part, preventing electrophoretic liquid from seeping into the contact surface and thus preventing ablation and melting of the sheet metal part caused by energization during the electrophoresis process. During the rotation and contact of the pressing plane relative to the sheet metal part, dry friction exists between the pressing plane and the sheet metal part, which can scrape off the electrophoretic paint adhering to the pressing plane.

[0041] Furthermore, the frame includes two parallel longitudinal beams and a crossbeam connected to the longitudinal beams. Several stacking platforms are provided on the longitudinal beams, and the stacking platforms are all positioned directly opposite the longitudinal beams and are spaced at the same distance from the longitudinal beams.

[0042] According to the above-mentioned technical means, when multiple electrophoresis skids are stored, the stacking platform of one electrophoresis skid is used to support the longitudinal beam of another electrophoresis skid, so as to realize the stacking of multiple electrophoresis skids and reduce the occupation of idle electrophoresis skids on the production site.

[0043] Furthermore, the electrophoresis skid also includes a cover and a first electrical connector electrically connected to the support assembly. The cover is connected to the frame, and a cavity is formed inside the cover with an opening at one end. The first electrical connector is located inside the cavity, and the side of the cover with the opening faces away from the support assembly.

[0044] According to the above technical means, during use, the cover is inverted in the liquid. Since there is no vent at the top, a part of the gas inside the cover will be sealed in its cavity. The top of the cavity will always remain free of electrophoretic paint, so that the first electrical connector will not be adhered to by electrophoretic paint, thus maintaining its good electrical contact and conductivity.

[0045] An electrophoretic delivery system comprising:

[0046] The swing arm is equipped with a copper brush mechanism and a support base;

[0047] An electrophoresis skid is connected to the swing arm via the support base, and the copper brush mechanism is electrically connected to the support assembly.

[0048] Based on the above technical means, in the automotive body painting process, a combination of swing rods and electrophoresis skids is used to complete the workpiece transportation in the pretreatment electrophoresis process section. The electrophoresis skids are connected and conductive to the front and rear swing rods through support seats. In the electrophoresis section, the power supply system forms a current loop through the anode system, tank liquid, workpiece, electrophoresis skids, swing rods and copper brush mechanism to complete the body electrophoresis process.

[0049] Furthermore, the support base includes a base plate, a support rod, and a second electrical connector electrically connected to the copper brush mechanism. The base plate is connected to the swing rod, and the two ends of the support rod are respectively connected to the base plate and the second electrical connector. The electrophoresis skid includes a cover and a first electrical connector electrically connected to the support assembly. The cover is connected to the frame, and a cavity is formed inside the cover with an opening at one end. The first electrical connector is located inside the cavity, and the side of the cover with the opening faces away from the support assembly. The second electrical connector extends into the cavity and cooperates with the first electrical connector.

[0050] According to the above technical means, the second electrical connector extends into the cavity and connects with the first electrical connector. The cover will seal a portion of the gas in the cavity, and the top of the cavity will always remain free of electrophoretic paint, so that the first electrical connector and the second connector will not be adhered to by electrophoretic paint, and maintain good electrical contact between them.

[0051] The beneficial effects of this invention are:

[0052] (1) The top locking cap of the locking component in the support assembly is an eccentric structure relative to the shaft. By controlling the rotation of the shaft around its own axis, the locking component can cooperate with the first elastic component and the second elastic component respectively, thereby realizing the switching between the unlocked state and the locked state of the locking component. In the unlocked state, it is convenient to pre-fix the vehicle body. In the locked state, the support assembly presses the sheet metal parts of the vehicle body through the pressing plane of the locking cap and the bearing plane of the bracket to fix the vehicle body, and realizes the electrical connection with the sheet metal parts through the pressing plane of the locking cap as a conductive surface.

[0053] (2) During the process of the locking member rotating from the unlocked state to the locked state, the elastic force applied by the second elastic member to the locking member will be transmitted to the pressing plane, so as to achieve a tight fit between the pressing plane and the sheet metal part. No electrophoretic liquid will seep into the fitting surface, and no electrophoretic paint will be generated on the conductive surface to affect the conductivity, thus preventing the sheet metal part from being burned and melted after being energized in the electrophoresis process.

[0054] (3) When the support assembly is unloaded and the workpiece to be fixed is not mounted for electrophoresis, there will be conductive paint on the pressing surface. When it is mounted on the vehicle body in the subsequent process, the pressing surface rotates and fits relative to the sheet metal part during the process of the locking part rotating from the unlocked state to the locked state. There is dry friction between the pressing surface and the sheet metal part, which can scrape off the electrophoretic paint attached to the pressing surface and obtain a clean conductive surface. Attached Figure Description

[0055] Figure 1 This is an exploded view of the support assembly according to an embodiment of the present invention;

[0056] Figure 2This is an assembly diagram of the locking components in the support assembly according to an embodiment of the present invention;

[0057] Figure 3 This is a partial structural diagram of the support assembly according to an embodiment of the present invention;

[0058] Figure 4 This is a schematic diagram of the support assembly in the unlocked state according to an embodiment of the present invention;

[0059] Figure 5 This is a cross-sectional view of the assembly relationship between the support assembly and the vehicle body in the unlocked state, according to an embodiment of the present invention.

[0060] Figure 6 This is a schematic diagram of the support assembly of the present invention after it has been rotated 100° in the unlocked state;

[0061] Figure 7 This is a schematic diagram of the support assembly of the present invention after it has been rotated 120° in the unlocked state;

[0062] Figure 8 This is a schematic diagram of the support assembly in the locked state according to an embodiment of the present invention;

[0063] Figure 9 This is a cross-sectional view showing the assembly relationship between the support assembly and the vehicle body in the locked state according to an embodiment of the present invention;

[0064] Figure 10 This is a perspective view of the electrophoresis skid according to an embodiment of the present invention;

[0065] Figure 11 This is a perspective view of the electrophoresis delivery system according to an embodiment of the present invention;

[0066] Figure 12 This is a schematic diagram of the support base in the electrophoresis transport system according to an embodiment of the present invention;

[0067] Figure 13 This is a schematic diagram of the assembly relationship between the support base and the cover in the electrophoresis conveying system of this invention.

[0068] Figure 14 This is a schematic diagram of the copper brush mechanism in the electrophoresis delivery system according to an embodiment of the present invention.

[0069] in,

[0070] 100. Support assembly; 110. Bracket; 111. Bearing plane; 112. First protrusion; 113. Second protrusion; 114. Bearing platform; 115. Support component; 1151. Process hole; 116. Base; 117. Connecting block; 1171. Fixing groove;

[0071] 120. Locking component; 121. Shaft body; 1211. First fixing hole; 1212. Third fixing hole; 1213. Upper limit cut surface; 1214. Lower limit cut surface; 1215. First shaft segment; 1216. Second shaft segment; 1217. Fourth fixing hole; 1218. Fifth fixing hole; 1219. Second shaft pin; 122. Locking cap; 1221. Pressing plane; 123. Rotating arm; 1231. Second fixing hole; 1232. Cutting surface; 124. First shaft pin;

[0072] 130. First elastic element; 131. First plate; 132. First bending segment;

[0073] 140. Second elastic element; 141. Second plate; 142. Second bending section;

[0074] 151. First bolt; 152. Second bolt; 153. Third bolt; 154. Washer; 155. Fourth bolt; 156. Washer; 157. First pad; 158. Protective block; 159. Adjusting assembly; 160. First clamping block; 161. Second clamping block; 162. Fifth bolt; 163. Nut; 164. Rotary lever;

[0075] 170. The third elastic element;

[0076] 200. Frame; 210. Longitudinal beam; 220. Crossbeam; 221. First crossbeam; 222. Second crossbeam; 223. Third crossbeam; 224. Fourth crossbeam; 230. License plate; 240. Loading block; 250. Forklift ring;

[0077] 300. Stacking platform;

[0078] 400. Cover body; 410. Limiting component;

[0079] 500, pendulum;

[0080] 600. Copper brush mechanism; 610. Copper block; 620. Spring strip; 630. Limiting ring; 640. Fixing plate;

[0081] 700, Support seat; 710, Base plate; 720, Support rod; 730, Second electrical connector; 740, First limiting plate; 750, Guide plate; 760, Second limiting plate; 770, Reinforcing rib;

[0082] 800. Swing rod conveyor mechanism;

[0083] Z, first direction; X, second direction; Y, third direction;

[0084] 1. Vehicle body; 11. Sheet metal parts. Detailed Implementation

[0085] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0086] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0087] like Figure 1-9 As shown, this embodiment proposes a support assembly 100 for an electrophoresis skid. The structure of the support assembly 100 mainly includes a bracket 110, a locking member 120, a first elastic member 130, and a second elastic member 140. The bracket 110 has a bearing plane 111 for supporting the workpiece to be fixed. The locking member 120 includes a shaft 121 perpendicular to the bearing plane 111 and a locking cap 122 disposed at one end of the shaft 121. The shaft 121 passes through the bracket 110. The locking cap 122 has a pressing plane 1221 that is directly opposite to and parallel to the bearing plane 111. The shaft 121 is eccentrically connected to the pressing plane 1221. The locking member 120 has an unlocked state and a locked state during rotation around the axis of the shaft 121. The first elastic member 130 and the second elastic member 140 are both disposed on the side of the bracket 110 opposite to the bearing plane 111. When the locking member 120 is in the unlocked state, it abuts against the first elastic member 130 to restrict the movement of the pressing plane 1221 toward the bearing plane 111. The distance between the bearing plane 111 and the pressing plane 1221 is greater than the thickness of the workpiece to be fixed. When the locking member 120 is in the locked state, it abuts against the second elastic member 140, which tends to press the pressing plane 1221 against the workpiece to be fixed. The support assembly 100 is used to support and fix the workpiece to be fixed. This application uses the sheet metal part 11 of the vehicle body 1 as an example to illustrate the workpiece to be fixed. For ease of description, the axial direction of the shaft 121 is referred to as the first direction Z.

[0088] The method of using the support assembly 100 in this embodiment is as follows: First, rotate the locking member 120 to engage with the first elastic member 130. With the locking member 120 in the unlocked state, the first elastic member 130 supports the locking member 120, restricting the pressing plane 1221 from moving closer to the bearing plane 111, thus stabilizing the distance between the bearing plane 111 and the pressing plane 1221. Then, the support hole on the sheet metal part 11 of the vehicle body 1 can be passed through the locking cap 122 and fitted onto the shaft 121, with the sheet metal part 11 positioned between the bearing plane 111 and the pressing plane 1221. The distance between the bearing plane 111 and the pressing plane 1221 is greater than that between the sheet metal part 111 and the pressing plane 1221. The thickness of 11 allows for easy adjustment of the position of the sheet metal part 11. Then, the locking member 120 is rotated to engage with the second elastic member 140, and the locking member 120 is in a locked state. The second elastic member 140 applies an axial force to the locking member 120, and the direction of this force is from the pressing plane 1221 toward the bearing plane 111. In this way, the second elastic member 140 can make the pressing plane 1221 press the sheet metal part 11, thereby locking the sheet metal part 11 between the bearing plane 111 and the pressing plane 1221. When it is necessary to remove the fixed workpiece, simply rotate the locking member 120 in the opposite direction to return the locking member 120 to the unlocked state.

[0089] In the above embodiment, firstly, the top locking cap 122 of the locking member 120 is eccentric relative to the shaft 121. By controlling the rotation of the shaft 121 around its own axis, the locking member 120 can cooperate with the first elastic member 130 and the second elastic member 140 respectively, thereby realizing the switching of the locking member 120 between the unlocked state and the locked state. In the unlocked state, it is convenient to pre-fix the vehicle body 1. In the locked state, the support assembly 100 presses the sheet metal part 11 of the vehicle body 1 through the pressing plane 1221 of the locking cap 122 and the bearing plane 111 of the bracket 110 to fix the vehicle body 1, and realizes the electrical connection with the sheet metal part 11 through the pressing plane 1221 of the locking cap 122 as a conductive surface; secondly, during the process of the locking member 120 rotating from the unlocked state to the locked state, the second The elastic force applied by the elastic element 140 to the locking element 120 is transmitted to the pressing surface 1221, achieving a tight fit between the pressing surface 1221 and the sheet metal part 11. No electrophoretic liquid will seep into the fitting surface, and no electrophoretic paint will be generated on the conductive surface, thus affecting conductivity and preventing ablation and melting of the sheet metal part 11 after energization during the electrophoresis process. Thirdly, when the support assembly 100 is unloaded and not carrying the workpiece to be fixed for electrophoresis, there will be conductive paint on the pressing surface 1221. When it is mounted on the vehicle body 1 in subsequent processes, during the process of the locking element 120 rotating from the unlocked state to the locked state, the pressing surface 1221 rotates and fits relative to the sheet metal part 11. Dry friction exists between the pressing surface 1221 and the sheet metal part 11, which can scrape off the electrophoretic paint attached to the pressing surface 1221, resulting in a clean conductive surface.

[0090] In some embodiments, such as Figure 1-3 As shown, the locking member 120 also includes a rotating arm 123 vertically connected to the shaft 121. The first elastic member 130 includes a first plate 131 and a first bending section 132. The first bending section 132 bends relative to the first plate 131 in a direction away from the bracket 110. The first bending section 132 is used to guide the rotating arm 123 to move to the side of the first plate 131 facing the bracket 110. In the unlocked state, the rotating arm 123 abuts against the surface of the first plate 131 facing the bracket 110.

[0091] In this embodiment, during the rotation of the locking member 120, the first plate 131 supports the locking member 120 in the Z direction through the cooperation of the rotating arm 123 and the first plate 131, thereby achieving the desired effect. Figure 4 and 5In the unlocked state shown, the first plate 131 is preferably perpendicular to the axial direction of the shaft 121. The first bent section 132 serves to guide the rotating arm 123. During the process of the locking member 120 rotating from the locked state to the unlocked state, the rotating arm 123 moves axially along the shaft 121 under the guidance of the first bent section 132. This causes the rotating arm 123 to gradually move along the first bent section 132 to the surface of the first plate 131 facing the bracket 110. Simultaneously, the locking member 120 as a whole moves axially along the shaft 121 under the influence of the rotating arm 123, and the pressing plane 1221 gradually moves away from the bearing plane 111. The first plate 131 can provide a larger support area and, when combined with the rotating arm 123, provides more stable support.

[0092] Preferably, the rotating arm 123 is made of high-strength wear-resistant steel, and a first fixing hole 1211 is provided on the shaft 121 along the radial direction. One end of the rotating arm 123 extends into the first fixing hole 1211 and is interference-fitted with the shaft 121. The portion of the rotating arm 123 that extends into the first fixing hole 1211 has a second fixing hole 1231 arranged radially. The shaft 121 has a third fixing hole 1212 that extends radially into the first fixing hole 1211. After one end of the rotating arm 123 extends into the first fixing hole 1211 and is press-fitted with the shaft 121, the second fixing hole 1231 and the third fixing hole 1212 are aligned. The locking member 120 of the support assembly 100 also includes a first shaft pin 124. The first shaft pin 124 can be inserted into the second fixing hole 1231 and the third fixing hole 1212 and press-fitted with both the second fixing hole 1231 and the third fixing hole 1212, further fixing the rotating arm 123 in the first fixing hole 1211.

[0093] The first plate 131 and the first bent section 132 of the first elastic member 130 are preferably made of spring steel plate to obtain sufficient elastic support force for the locking member 120. The first elastic member 130 can be fixed to the bracket 110 by bolts. For example, through holes are opened at both ends of the first plate 131. After the first bolt 151 and the second bolt 152 pass through the through holes on the first plate 131, the first plate 131 is fixed to the bracket 110. The bracket 110 is provided with screw holes that mate with the first bolt 151 and the second bolt 152 respectively.

[0094] To enable the rotation of the rotating arm 123, there must be sufficient clearance in the Z-direction between the first plate 131 and the bracket 110, allowing the rotating arm 123 to enter between them. Therefore, a first pad 157 is provided between a portion of the first plate 131 and the bracket 110 to provide Z-direction space and ensure the rotation of the rotating arm 123. Optionally, the first pad 157 has two through holes. A first bolt 151 passes through one end of the first plate 131 and the first pad 157 and is then screwed into a screw hole on the bracket 110. The first bolt 151 simultaneously fixes both the first plate 131 and the first pad 157. To further improve the fixing effect of the first pad 157, a third bolt 153 fixes the other end of the first pad 157 to the bracket 110.

[0095] In some embodiments, the second elastic member 140 includes a second plate 141 and a second bent section 142. The second bent section 142 bends relative to the second plate 141 toward the support 110. The second bent section 142 guides the rotating arm 123 to move to the side of the second plate 141 away from the support 110. In the locked state, as shown... Figure 8 and 9 As shown, the rotating arm 123 abuts against the side surface of the second plate 141 opposite to the bracket 110.

[0096] In this embodiment, during the rotation of the locking member 120, the second plate 141 exerts an elastic force on the locking member 120 in the Z direction through the cooperation of the rotating arm 123 and the second plate 141, thereby obtaining a locked state. The second plate 141 is preferably perpendicular to the axial direction of the shaft 121. The second bending section 142 is used to guide the rotating arm 123. When the locking member 120 rotates from the unlocked state to the locked state, the rotating arm 123 moves in the Z direction through the guidance of the second bending section 142, so that the rotating arm 123 gradually moves along the second bending section 142 to the surface of the second plate 141 away from the bracket 110. At the same time, the locking member 120 as a whole will move in the Z direction under the drive of the rotating arm 123, and the pressing plane 1221 gradually approaches the bearing plane 111, firmly fixing the sheet metal part 11 between the pressing plane 1221 and the bearing plane 111. The second plate 141 can provide a larger mating area, which can provide more stable elastic contact when mating with the rotating arm 123. During the rotation process when the rotating arm 123 and the second plate 141 are pressed together and rotated, the pressing surface 1221 of the locking cap 122 will also press the sheet metal part 11 tightly and rotate relative to the sheet metal part 11, which increases the rotational stroke of dry friction between the pressing surface 1221 and the sheet metal part 11. This is more conducive to scraping off the electrophoretic paint attached to the pressing surface 1221 and obtaining a clean conductive surface.

[0097] In some embodiments, the first plate 131 is further away from the support 110 in the Z-direction than the second plate 141, and the distance between the first plate 131 and the second plate 141 in the Z-direction is less than the size of the rotating arm 123. With this configuration, when the rotating arm 123 switches positions between the first plate 131 and the second plate 141, it ensures that the locking member 120 has a certain displacement in the Z direction, thus achieving the switching between the unlocked and locked states. For example, when the rotating arm 123 abuts against the surface of the first plate 131 facing the bracket 110, the locking member 120 is in the unlocked state. After the rotating arm 123 rotates and leaves the first plate 131, it is guided by the second bend to the surface of the second plate 141 facing away from the bracket 110. Since the distance between the first plate 131 and the second plate 141 is less than the size of the rotating arm 123, the rotating arm 123 will inevitably move away from the bracket 110, thereby causing the pressing plane 1221 to move towards the bearing plane 111, which helps to achieve the locked state.

[0098] The second plate 141 and the second bent section 142 of the second elastic member 140 are preferably made of spring steel plate to obtain sufficient elastic force on the locking member 120. For example, the thickness of the second plate 141 can be selected to ensure that the elastic force applied after the second plate 141 deforms in the Z direction is greater than 100KG, so as to achieve the fixing effect of the locking member 120 on the sheet metal part 11 in the locked state. In order to improve the elastic deformation capability of the second elastic member 140.

[0099] In some embodiments, one end of the second plate 141 is fixed to the bracket 110, and the other end is a free end. The cantilevered fixing method of the second plate 141 makes it easier for the free end to deform relative to the fixed end, providing a larger elastic force.

[0100] like Figure 1As shown, the second elastic element 140 can be fixed to the bracket 110 by bolts. For example, the fixing end of the second plate 141 has two through holes. After the bolt passes through the through holes on the second plate 141, the second plate 141 is fixed to the bracket 110. The bracket 110 is provided with screw holes that mate with the bolts. In order to make full use of the installation space on the bracket 110, the first elastic element 130 and the second elastic element 140 can be fixed with the same bolt. For example, the second bolt 152 can be passed through the fixing ends of the first plate 131 and the second plate 141 in sequence and screwed to the bracket 110. A washer 154 is fitted on the second bolt 152. The washer 154 is placed between the first plate 131 and the second plate 141 to limit the distance between the first plate 131 and the second plate 141. In addition, the fixing effect of the second elastic element 140 can be further improved by passing through the fixing end of the second plate 141 and screwing to the bracket 110. To allow the second plate 141 to have a certain elastic deformation space, a washer 156 is provided between the fixed end of the second plate 141 and the bracket 110, creating a gap in the Z-direction between the second plate 141 and the bracket 110, allowing the plate to move and deform elastically in the Z-direction. Optionally, the first pad 157 has two through holes. The first bolt 151 passes through one end of the first plate 131 and the first pad 157 in sequence and is screwed into the screw hole on the bracket 110. The first bolt 151 simultaneously fixes the first plate 131 and the first pad 157. To further improve the fixing effect of the first pad 157, the other end of the first pad 157 is fixed to the bracket 110 by a third bolt 153. The second bolt 152 and the fourth bolt 155 can both pass through the washer 156 to further fix the washer 156.

[0101] In some embodiments, such as Figure 2 As shown, the rotating arm 123 has cutting surfaces 1232 perpendicular to the Z direction on both sides of its circumferential surface in the Z direction. The two cutting surfaces 1232 are used to cooperate with the surfaces of the first plate 131 and the second plate 141 respectively, thereby increasing the contact area and improving the stability of the interaction through surface contact.

[0102] In some embodiments, such as Figure 1-3As shown, a protective block 158 is provided on the bracket 110. The protective block 158 is close to the free end of the second plate 141, extends out of the second plate 141 away from the bracket 110, and is located on the movement path of the rotating arm 123. The protective block 158 can be welded, bolted, or integrally connected to the bracket 110. The protective block 158 is located near the free end of the second plate 141 and can be used to prevent damage to the side or end face of the free end of the second plate 141 by external forces. The protective block 158 is on the movement path of the rotating arm 123. After the locking member 120 rotates from the unlocked state to the locked state, if the rotating arm 123 continues to rotate, it will be blocked by the protective block 158, which can prevent the rotating arm 123 from excessive rotation and avoid damage to the mechanism.

[0103] In some embodiments, such as Figure 1 As shown, an adjustment component 159 is provided between the second plate 141 and the bracket 110. The adjustment component 159 is used to adjust the distance between the free end of the second plate 141 and the bracket 110. By applying the adjustment component 159, the gap between the free end of the second plate 141 and the bracket 110 can be adjusted, thereby controlling the amount of movement of the locking member 120 in the Z direction. The pressure of the pressing plane 1221 on the sheet metal part 11 can be adjusted as needed, and the gap between the free end of the second plate 141 and the bracket 110 can be adjusted according to the sheet metal parts 11 of different thicknesses. This allows the support assembly 100 to be used for fixing sheet metal parts 11 of different thicknesses, thus broadening its applicability. Optionally, the adjustment component 159 can be an adjusting bolt. By rotating the bolt, its length between the free end of the bracket 110 and the free end of the first plate 131 can be adjusted, thereby adjusting the gap between the free end of the second plate 141 and the bracket 110.

[0104] In some embodiments, such as Figure 3 and 5As shown, a first protrusion 112 is provided on the bearing plane 111. When the locking member 120 is in the unlocked state, the pressing plane 1221 is directly opposite the first protrusion 112. When the vehicle body 1 is fixed to the support assembly 100, the locking member 120 is in the unlocked state and will press against the first elastic member 130. The vehicle body 1 needs to be moved along the Z direction to approach the locking cap 122 so that the support hole on the sheet metal part 11 is directly opposite the locking cap 122 and fitted onto the outside of the locking member 120. However, during the operation, sometimes the support hole is not directly opposite the locking cap 122. When the vehicle body 1 falls, the sheet metal part 11 will impact the locking cap 122. The locked member 120, which is impacted, will further impact the first elastic member 130. Since the sheet metal part 11 is not yet between the bearing plane 111 and the pressing plane 1221 at this time, the Z-direction movement of the locking member 120 will be larger, which can easily lead to damage to the first elastic member 130. By setting the first protrusion 112, in the unlocked state, the pressing plane 1221 faces the first protrusion 112. After the vehicle body 1 falls and impacts the locking cap 122, the first protrusion 112 can block the pressing plane 1221, reducing the impact of the locking member 120 on the first elastic member 130. It should be noted that when the locking member 120 is in the locked state, the pressing plane 1221 is no longer facing the first protrusion 112, so as to prevent the first protrusion 112 from affecting the locking process.

[0105] In some embodiments, such as Figure 3 As shown, a second protrusion 113 is provided on the bearing plane 111. The height of the second protrusion 113 is less than the height of the first protrusion 112. When the locking member 120 is in the locked state, the pressing plane 1221 is directly opposite the second protrusion 113. The outer contours of the first protrusion 112 and the second protrusion 113 are used to match the contours of the support holes on the sheet metal part 11 to achieve the positioning of the sheet metal part 11 of the vehicle body 1. When the locking member 120 is in the locked state, the bearing plane 111 is located on one side of the second protrusion. The height of the second protrusion 113 is less than the height of the first protrusion 112, providing downward movement space for the locking cap 122. Furthermore, the height of the second protrusion 113 should be less than or equal to the thickness of the sheet metal part 11 to ensure that the pressing plane 1221 can contact the sheet metal part 11 downwards to achieve the locking state.

[0106] In some embodiments, such as Figure 2 As shown, the side of the shaft 121 has a limiting tangent parallel to the Z direction, and the bracket 110 is provided with a third elastic element 170. In the unlocked state, the third elastic element 170 fits against the limiting tangent to limit the rotation of the shaft 121.

[0107] After the third elastic element 170 abuts against the limiting cut surface from the side of the shaft 121, the third elastic element 170 undergoes elastic deformation and generates an elastic force that compresses the limiting cut surface. When the shaft 121 rotates, the area outside the upper limiting cut surface 1213 of the shaft 121 will further increase the deformation of the third elastic element 170, generating a greater elastic force. This allows the third elastic element 170 to restrict the rotation of the shaft 121 and further restrict the tendency of the locking element 120 to disengage from the unlocked state. This ensures that the locking element 120 can remain stable in the unlocked state without rotating or shaking, making it easier to assemble the support hole on the vehicle body 1 onto the locking element 120.

[0108] In some embodiments, limiting surfaces are respectively disposed on opposite sides of the shaft 121, and at least two third elastic members 170 are provided, each used to cooperate with the limiting surfaces on both sides of the shaft 121; when the locking member 120 is in the unlocked state, after the shaft 121 rotates 180°, the locking member 120 is in the locked state. In this embodiment, in the unlocked state, as... Figure 4 and 5 As shown, the two third elastic elements 170 respectively cooperate with the limiting cut surfaces on both sides of the shaft 121, which restrict the locking element 120 from disengaging from the unlocked state, so that the locking element 120 can be stably kept in the unlocked state without rotation or shaking; when the shaft 121 is in the locked state after rotating 180°, the limiting cut surfaces on both sides of the shaft 121 interchange positions, as shown. Figure 8 and 9 As shown, the two third elastic elements 170 still cooperate with the limiting cut surfaces on both sides of the shaft 121, respectively, to limit the tendency of the locking element 120 to disengage from the locked state, so that the locking element 120 can be stably kept in the locked state. The process of transitioning from the unlocked state to the locked state is described in reference [reference needed]. Figure 6 and Figure 7 As shown.

[0109] Preferably, the third elastic element 170 can be a U-shaped spring as shown in the figure. The two parallel elastic rods of the U-shaped spring are arranged vertically in the Z direction and both cooperate with the limiting cut surfaces. The limiting cut surfaces on both sides include an upper limiting cut surface 1213 and a lower limiting cut surface 1214 that are separately set. The upper limiting cut surface 1213 and the lower limiting cut surface 1214 are recessed relative to the circumference of the shaft 121. One elastic rod of the U-shaped spring cooperates with the upper limiting cut surface 1213 and the other elastic rod cooperates with the lower limiting cut surface 1214. The lengths of the upper limiting cut surface 1213 and the lower limiting cut surface 1214 in the Z direction are both greater than the dimensions of the elastic rods in the Z direction, so that the shaft 121 can have a certain amount of movement space in the Z direction.

[0110] In some embodiments, such as Figure 1 and Figure 3As shown, the bracket 110 includes a bearing platform 114, a support member 115, and a base 116 connected in sequence. The bearing plane 111 is located on the side of the bearing platform 114 away from the base 116. The shaft 121 of the locking member 120 passes through the bearing platform 114 and the base 116. The first elastic member 130 and the second elastic member 140 are disposed on the side of the base 116 away from the bearing platform 114. In this embodiment, the bearing platform 114 is machined and supports the workpiece to be fixed. The top is designed with a bearing plane 111. A through hole is opened on the bearing platform 114 for the shaft 121 to pass through. The shaft 121 is clearance-fitted with the bearing platform 114 to ensure that the shaft 121 can rotate relative to the bearing platform 114. The base 116 is used for the main structure connection of the electrophoresis skid and for setting the first elastic element 130 and the second elastic element 140. The base 116 is machined, and a groove can be machined on the side of the base 116 away from the support platform 114. This groove structure can increase the distance between the bottom surface of the base 116 and the first plate 131, provide space for the rotation of the rotating arm 123, and reduce the Z-direction length of the shaft 121. The base 116 is provided with a through hole for the shaft 121 to pass through. The shaft 121 and the base 116 are clearance-fitted to ensure that the shaft 121 can rotate relative to the base 116.

[0111] In some embodiments, the support member 115 is an open structure. The support member 115 is used to connect the support platform 114 and the base 116. During the coating process, electrophoretic liquid accumulates at the mating point between the locking member 120 and the bracket 110, affecting the rotation of the locking member 120 relative to the bracket. By designing the support member 115 as an open structure, the electrophoretic liquid can be drained through the support member 115, reducing the accumulation of electrophoretic liquid at the mating point between the locking member 120 and the bracket 110 and its impact on the movement of the locking member 120.

[0112] Preferably, the support member 115 has a U-shaped structure. Specifically, the cross section of the support member 115 perpendicular to the Z direction is U-shaped and can be formed by bending steel plate. The two ends of the support member 115 in the Z direction are welded to the bearing platform 114 and the base 116 respectively. The U-shaped support member 115 is between the bearing platform 114 and the base 116, forming a hollow structure inside, which allows the shaft 121 to pass through. Three sides are plate structures, and one side is an open structure, which can prevent liquid from accumulating inside the hollow structure.

[0113] More preferably, the bracket 110 further includes a connecting block 117, which is connected to both the support member 115 and the base 116 to enhance the connection strength between the support member 115 and the base 116. When the support member 115 has a U-shaped structure, the connecting block 117 is located on the side of the support member 115 away from the opening of the U-shaped structure. The connecting block 117 can also be used to fix the third elastic member 170. Specifically, the third elastic member 170 is a U-shaped spring as shown in the figure. The connecting block 117 has fixing grooves 1171 on both sides. The depth and inner contour of the fixing grooves 1171 match the U-shaped springs. The two U-shaped springs are respectively embedded in the fixing grooves 1171 on both sides of the connecting block 117. The two parallel elastic rods of the U-shaped springs extend out of the connecting member and pass through the support member 115 before penetrating into the hollow structure inside the support member 115, so that the elastic rods fit snugly against the surface of the shaft 121. To fix the U-shaped spring in the fixing groove 1171, the support assembly 100 also includes a first clamping block 160, a second clamping block 161, a fifth bolt 162, and a nut 163. The connecting block 117, the first clamping block 160, and the second clamping block 161 all have through holes. When the U-shaped spring is inserted into the fixing groove 1171, the first clamping block 160 and the second clamping block 161 are respectively attached to the two side surfaces of the connecting block 117 to fix the U-shaped spring in the fixing groove 1171. The through holes of the first clamping block 160, the second clamping block 161, and the connecting block 117 are arranged opposite each other. After the fifth bolt 162 passes through the through holes of the first clamping block 160, the second clamping block 161, and the connecting block 117, it is locked from the other end by the nut 163, thereby fixing the first clamping block 160 and the second clamping block 161 to the connecting block 117 and fixing the U-shaped spring.

[0114] In some embodiments, a rotating lever 164 is also connected to one end of the shaft 121 away from the locking cap 122. The extension direction of the rotating lever 164 is perpendicular to the Z direction. The rotating lever can be connected to a drive device such as a motor, and the shaft 121 is rotated by the drive device. At this time, due to the presence of a locking cap 122, a rotating arm 123, and a rotating lever 164 on the shaft 121, the assembly of the shaft 121 with the bracket 110 is somewhat difficult. Therefore, the shaft 121 includes a first shaft segment 1215 and a second shaft segment 1216 coaxially connected. The first shaft segment 1215 passes through the support platform 114, and the second shaft segment 1216 passes through the base 116. The locking cap 122 is connected to the first shaft segment 1215, and the rotating arm 123 and the rotating lever 164 are connected to the second shaft segment 1216. During use, the first shaft segment 1215 can be inserted into the bracket 110 from one side, and then the second shaft segment 1216 can be inserted into the bracket 110 from the other side. Then, the first shaft segment 1215 and the second shaft segment 1216 can be connected to achieve the assembly of the shaft 121 with the bracket 110.

[0115] Preferably, both the first shaft segment 1215 and the second shaft segment 1216 are made of high-strength wear-resistant steel. The end of the second shaft segment 1216 connected to the first shaft segment 1215 is a sleeve structure. The first shaft segment 1215 is sleeved inside the second shaft segment 1216. A radially extending fourth fixing hole 1217 is provided on the first shaft segment 1215. A fifth fixing hole 1218 is provided through the sleeve portion of the second shaft segment 1216. When the first shaft segment 1215 is sleeved inside the second shaft segment 1216, the fourth fixing hole 1217 and the fifth fixing hole 1218 are aligned. The support assembly 100 also includes a second shaft pin 1219. The second shaft pin 1219 can be inserted into the fifth fixing hole 1218 and the fourth fixing hole 1217, and simultaneously has an interference fit with the fifth fixing hole 1218 and the fourth fixing hole 1217 to fix the first shaft segment 1215 inside the second shaft segment 1216. Furthermore, the limiting cut surface is preferably set on the second shaft segment 1216. The U-shaped support facilitates the connection between the second shaft segment 1216 and the first shaft segment 1215 through the second shaft pin 1219. The two parallel plates of the U-shaped support member 115 are provided with corresponding process holes 1151. The rotating shaft 121 can make the second shaft pin 1219 face the process hole 1151, which facilitates the installation or removal of the second pin through the process hole 1151.

[0116] In some embodiments, the bearing surface 111 on the bracket 110 is coated with an insulating layer. During the locking process of the sheet metal part 11 of the vehicle body 1, the pressing surface 1221 on the locking cap 122 can be cleaned by friction to form a conductive surface. However, the area where the bearing surface 111 contacts the sheet metal part 11 will also have electrophoretic paint adhering to it. The adhering electrophoretic paint will also increase the resistance at the connection between the sheet metal part 11 and the bearing surface 111, causing the sheet metal part 11 to heat up and melt. After coating the surface of the bearing surface 111 with an insulating layer, the pressing surface 1221 of the locking member 120 becomes the only conductive surface between the support assembly 100 and the sheet metal part 11. The bearing surface 111 no longer bears the conductive function, thus avoiding the product burning problem caused by paint accumulation on the bearing surface 111.

[0117] like Figure 10As shown in the illustration, this application also provides an electrophoresis skid, which includes a frame 200 and a support assembly 100. The support assembly 100 is the same as the support assembly 100 for electrophoresis skid in the aforementioned embodiments of this application. Multiple support assemblies 100 are provided and all connected to the frame 200. All multiple support assemblies 100 are located on the same side of the frame 200. The bracket 110 of the support assembly 100 is fixedly connected to the frame 200. The connection between the bracket 110 and the frame 200 can be a direct connection or an indirect connection through other components. For example, four support assemblies 100 can be provided. Taking the workpiece to be fixed as a vehicle body 1 as an example, the four support holes on the sheet metal part 11 of the vehicle body 1 are respectively matched and connected to the four support assemblies 100 for mounting, pressing, and conveying the vehicle body 1 during pretreatment and electrophoresis. During the process of the locking member 120 rotating from the unlocked state to the locked state, the elastic force applied by the second elastic member 140 to the locking member 120 is transmitted to the pressing surface 1221, achieving a tight fit between the pressing surface 1221 and the sheet metal part 11. No electrophoretic liquid will seep into the fitting surface, and no electrophoretic paint will be generated on the conductive surface, thus affecting conductivity and preventing ablation and melting of the sheet metal part 11 after energization during the electrophoresis process. When the support assembly 100 of the electrophoresis skid is unloaded and not carrying the workpiece to be fixed for electrophoresis, there will be conductive paint on the pressing surface 1221. When it is mounted on the vehicle body 1 in the subsequent process, during the process of the locking member 120 rotating from the unlocked state to the locked state, during the process of the pressing surface 1221 rotating and fitting relative to the sheet metal part 11, there is dry friction between the pressing surface 1221 and the sheet metal part 11, which can scrape off the electrophoretic paint attached to the pressing surface 1221, obtaining a clean conductive surface.

[0118] In some embodiments, the frame 200 includes two parallel longitudinal beams 210 and a transverse beam 220 connected to the longitudinal beams 210. A plurality of stacking platforms 300 are provided on the longitudinal beams 210, each stacking platform 300 being positioned directly opposite the longitudinal beams 210 and spaced equidistant from them. The extension directions of both the longitudinal beams 210 and the transverse beams 220 are perpendicular to the axial direction of the shaft 121 of the support assembly 100. The longitudinal beams 210 and transverse beams 220 are arranged perpendicularly and alternately to form a stable structural strength. For ease of description, the extension direction of the longitudinal beams 210 is denoted as the second direction X, and the extension direction of the transverse beams 220 is denoted as the third direction Y. The first direction Z, the second direction X, and the third direction Y are all perpendicular to each other. When multiple electrophoresis skids are stored, the stacking platform 300 of one electrophoresis skid is used to support the longitudinal beam 210 of another electrophoresis skid, enabling the stacking of multiple electrophoresis skids and reducing the occupation of idle electrophoresis skids in the production area.

[0119] Optionally, the support assembly 100 is provided with four beams. The crossbeam 220 includes a first crossbeam 221, a second crossbeam 222, and a third crossbeam 223 arranged sequentially in the extension direction of the longitudinal beam 210. Two support assemblies 100 are fixed on the first crossbeam 221, two support assemblies 100 are fixed on the second crossbeam 222, and two stacking platforms 300 are fixed on the third crossbeam 223. The two stacking platforms 300 are arranged on the first crossbeam 221. In this way, the four stacking platforms 300 can be used to support the two longitudinal beams 210 of another electrophoresis skid. In order to simplify the product structure, the bracket 110 of the support assembly 100 on the first crossbeam 221 can be used as the stacking platform 300. When the support assembly 100 includes a base 116, a part of the base 116 can be used as the stacking platform 300. Optionally, the support assembly 100 is connected to the crossbeam 220 by bolts. Before connection, the rust on the mating surfaces of the support assembly 100 and the crossbeam 220 must be removed to ensure a smooth overlap and good electrical contact.

[0120] In some embodiments, the electrophoresis skid further includes a cover 400 and a first electrical connector (not shown) electrically connected to the support assembly 100. The cover 400 is connected to the frame 200, and a cavity is formed inside the cover 400 with an opening at one end. The first electrical connector is located inside the cavity, and the side of the cover 400 with the opening faces away from the support assembly 100. The first connector is electrically connected to the pressing plane 1221 of the locking member 120 to enable the locking member 120 to be electrically connected to an external power source. During use, the cover 400 has a bowl-shaped structure with the opening facing downwards. When the electrophoresis skid enters and exits the tank containing the electrophoresis paint liquid at an angle, the cover 400 is inverted in the liquid. Because there is no vent at the top, a portion of the gas inside the cavity of the cover 400 will be sealed, and the top of the cavity will always remain free of electrophoresis paint, so that the first electrical connector will not be adhered to by the electrophoresis paint, maintaining its good electrical contact and conductivity.

[0121] In some embodiments, the electrophoretic skid also includes a fourth crossbeam 224, which is disposed between the first crossbeam 221 and the second crossbeam 222. The fourth crossbeam 224 serves to strengthen the structure and also houses a number plate 230 on its top for identification, inspection, and tracking of the electrophoretic skid. Additionally, the third crossbeam 223 can also mount a code carrier 240 to store information such as the vehicle body 1's code. Optionally, the longitudinal beam 210 is also provided with multiple forklift rings 250, welded to the longitudinal beam 210, for forklift transfer support of the electrophoretic skid. The number of forklift rings 250 can be set as follows: Figure 10 The four shown.

[0122] Other specific structures and technical effects of the support assembly 100 in the electrophoresis skid in this application embodiment can be referred to the specific description of the aforementioned support assembly 100 embodiment, and will not be repeated here.

[0123] like Figure 11-14 As shown, this application provides an electrophoresis conveying system, which includes a swing arm 500 and an electrophoresis skid. The swing arm 500 is equipped with a copper brush mechanism 600 and a support seat 700. The electrophoresis skid is the same as the one provided in the previous embodiments of this application, and is connected to the swing arm 500 via the support seat 700. The copper brush mechanism 600 is electrically connected to the support assembly 100. In the automotive body painting process, the combination of the swing arm 500 and the electrophoresis skid is used to transport the workpiece in the pretreatment electrophoresis process section. Two swing arms 500 are arranged at the front and rear. The electrophoresis skid is connected and electrically conductive to the front and rear swing arms 500 via the support seat 700. In the electrophoresis section, the power supply system forms a current loop through the anode system, the bath solution, the workpiece, the electrophoresis skid, the swing arm 500, and the copper brush mechanism 600 to complete the automotive body electrophoresis process. Optionally, the rocker arm 500 is constructed as a U-shaped rod, and a support seat 700 is fixedly connected to the horizontal section of the rocker arm 500. Four support seats 700 are provided, two on each of the two rocker arms 500.

[0124] In some embodiments, such as Figure 12 and 13 As shown, the support base 700 includes a base plate 710, a support rod 720, and a second electrical connector 730 electrically connected to the copper brush mechanism 600. The base plate 710 is connected to the swing rod 500. The two ends of the support rod 720 are respectively connected to the base plate 710 and the second electrical connector 730. The electrophoresis skid includes a cover 400 and a first electrical connector electrically connected to the support assembly 100. The cover 400 is connected to the frame 200. A cavity is formed inside the cover 400 and an opening is formed at one end. The first electrical connector is located inside the cavity. The side of the cover 400 with the opening is away from the support assembly 100. The second electrical connector 730 extends into the cavity and is connected to the first electrical connector.

[0125] In this embodiment, the second electrical connector 730 is preferably made of pure copper, and the support rod 720 is preferably made of high-strength steel. The upper part of the support rod 720 is interference-fitted with the second electrical connector 730 and makes Z-direction contact. The lower part of the support rod 720 is welded to the base plate 710, and the base plate 710 is welded to the swing rod 500. During use, the second electrical connector 730 extends into the cavity and connects with the first electrical connector. The cover 400 is a bowl-shaped structure with the opening facing downwards. The cover 400 is inverted in the liquid. Because there is no vent at the top, a portion of the gas inside the cover 400 will be sealed within its cavity. The top of the cavity will always remain free of electrophoretic paint, so that the first electrical connector and the second connector will not be adhered to by electrophoretic paint, maintaining good electrical contact between them.

[0126] Preferably, the support base 700 further includes a first limiting plate 740 disposed on the base plate 710. The first limiting plate 740 is disposed side by side with the support rod 720. A guide plate 750 is formed at the end of the first limiting plate 740 away from the base plate 710. In the direction away from the first limiting plate 740, the guide plate 750 gradually moves away from the support rod 720. A second limiting plate 760 is disposed on the side of the first limiting plate 740 facing the support rod 720. The second limiting plate 760 is disposed perpendicular to the first limiting plate 740. The outer wall of the cover 400 is provided with a limiting member 410 that cooperates with the second limiting plate 760. During use, the horizontal section of the swing arm 500 is set along the Y direction, the bottom plate 710 of the support base 700 is perpendicular to the Z direction, the support rod 720 is set along the Z direction, the first limiting plate 740 is perpendicular to the Y direction, and the second limiting plate 760 is perpendicular to the X direction. During the process of the cover 400 being fitted into the second electrical connector 730 and the support rod 720 along the Z direction, the guide plate 750 acts on the outer wall of the cover 400 to achieve the guiding function in the Y direction, guiding the side wall of the cover 400 to the space between the support rod 720 and the first limiting plate 740, and limiting the cover 400 in the Y direction through the first limiting plate 740. In addition, the second limiting plate 760 cooperates with the limiting member 410 on the cover 400 to limit the cover 400 in the X direction, thereby achieving precise docking of the first electrical connector and the second electrical connector 730. In addition, the support base 700 also includes a reinforcing rib 770, which is disposed between the support rod 720 and the first limiting plate 740. The reinforcing rib 770 is welded to the first limiting plate 740, the support rod 720 and the base plate 710 respectively, to strengthen the connection between the three.

[0127] In some implementations, such as Figure 14 As shown, a swing arm conveying mechanism 800 is provided at the end of the swing arm 500. A copper brush mechanism 600 is fixed on the swing arm conveying mechanism 800. The copper brush mechanism 600 includes a copper block 610, a spring strip 620, a limiting ring 630, and a fixing plate 640. The copper block 610 is designed with tapped screw holes. Bolts are used to connect the copper block 610 to one end of the spring strip 620. Before connection, the mating surfaces need to be ground and rust-removed to improve the conductivity of the conductive surface. The other end of the spring strip 620 is bent into a U-shape and then fixed by the limiting ring 630. The limiting ring 630 is bolted to the fixing plate 640. The limiting ring 630 is used to prevent the spring strip 620 from springing too far away from the fixing plate 640, so as to avoid affecting the passage and contact with the copper busbars on the production line. The fixing plate 640 is welded to the swing arm conveying mechanism 800 to improve conductivity. The copper block 610, spring strip 620 and limiting ring 630 can be provided in multiple ways as needed. For example, as shown in the figure, each copper brush mechanism 600 includes four copper blocks 610, four spring strips 620 and two limiting rings 630. Each limiting ring 630 is used to simultaneously shape and limit the two spring strips 620.

[0128] Other specific structures and technical effects of the electrophoresis skid in the electrophoresis transport system of this application embodiment can be referred to the specific description of the aforementioned electrophoresis skid embodiment, and will not be repeated here.

[0129] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

[0130] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0131] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0132] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A support assembly for an electrophoresis skid, characterized in that, include: The bracket (110) has a bearing plane (111) for supporting the workpiece to be fixed; The locking member (120) includes a shaft (121) perpendicular to the bearing plane (111) and a locking cap (122) disposed at one end of the shaft (121). The shaft (121) passes through the bracket (110). The locking cap (122) has a pressing plane (1221) that is directly opposite to and parallel to the bearing plane (111). The shaft (121) is eccentrically connected to the pressing plane (1221). The locking member (120) has an unlocked state and a locked state during rotation around the axis of the shaft (121). The first elastic element (130) and the second elastic element (140) are disposed on the side of the bracket (110) opposite to the bearing plane (111); In the unlocked state, the locking member (120) abuts against the first elastic member (130) to restrict the movement of the pressing plane (1221) toward the bearing plane (111), and the distance between the bearing plane (111) and the pressing plane (1221) is greater than the thickness of the workpiece to be fixed; in the locked state, the locking member (120) abuts against the second elastic member (140), and the second elastic member (140) has a tendency to cause the pressing plane (1221) to press against the workpiece to be fixed.

2. The support assembly (100) for electrophoresis skids according to claim 1, characterized in that, The locking member (120) further includes a rotating arm (123) vertically connected to the shaft (121). The first elastic member (130) includes a first plate (131) and a first bending segment (132). The first bending segment (132) bends relative to the first plate (131) away from the bracket (110). The first bending segment (132) is used to guide the rotating arm (123) to move to the side of the first plate (131) facing the bracket (110). In the unlocked state, the rotating arm (123) abuts against the surface of the first plate (131) facing the bracket (110).

3. The support assembly for electrophoresis skids according to claim 2, characterized in that, The second elastic member (140) includes a second plate (141) and a second bending section (142). The second bending section (142) bends relative to the second plate (141) toward the support (110). The second bending section (142) is used to guide the rotating arm (123) to move to the side of the second plate (141) away from the support (110). In the locked state, the rotating arm (123) abuts against the surface of the second plate (141) away from the support (110).

4. The support assembly for electrophoresis skids according to claim 3, characterized in that, The first plate (131) is further away from the support (110) relative to the second plate (141), and the distance between the first plate (131) and the second plate (141) in the axial direction of the shaft (121) is smaller than the size of the rotating arm (123).

5. The support assembly for electrophoresis skids according to claim 3, characterized in that, One end of the second plate (141) is fixed to the bracket (110), and the other end is a free end.

6. The support assembly for electrophoresis skids according to claim 5, characterized in that, A protective block (158) is provided on the bracket (110). The protective block (158) is close to the free end of the second plate (141). The protective block (158) extends out of the second plate (141) on the side away from the bracket (110) and is located on the movement path of the rotating arm (123).

7. The support assembly for electrophoresis skids according to claim 5, characterized in that, An adjustment component (159) is provided between the second plate (141) and the bracket (110), and the adjustment component (159) is used to adjust the distance between the free end of the second plate (141) and the bracket (110).

8. The support assembly for electrophoresis skids according to claim 1, characterized in that, The bearing plane (111) is provided with a first protrusion (112). When the locking member (120) is in the unlocked state, the pressing plane (1221) is directly opposite the first protrusion (112).

9. The support assembly for electrophoresis skids according to claim 8, characterized in that, A second protrusion (113) is provided on the bearing plane (111). The height of the second protrusion (113) is less than the height of the first protrusion (112). When the locking member (120) is in the locked state, the pressing plane (1221) is directly opposite the second protrusion (113).

10. The support assembly for an electrophoresis skid according to claim 1, characterized in that, The side of the shaft (121) has a limiting cut surface parallel to the axial direction. The bracket (110) is provided with a third elastic element (170). In the unlocked state, the third elastic element (170) is attached to the limiting cut surface to limit the rotation of the shaft (121).

11. The support assembly for electrophoresis skids according to claim 10, characterized in that, The limiting cut surfaces are respectively disposed on opposite sides of the shaft (121), and at least two third elastic members (170) are provided, which are respectively used to cooperate with the limiting cut surfaces on both sides of the shaft (121); when the locking member (120) is in the unlocked state, after the shaft (121) is rotated 180°, the locking member (120) is in the locked state.

12. The support assembly for electrophoresis skids according to claim 1, characterized in that, The bracket (110) includes a bearing platform (114), a support member (115), and a base (116) connected in sequence. The bearing plane (111) is located on the side of the bearing platform (114) away from the base (116). The shaft (121) of the locking member (120) passes through the bearing platform (114) and the base (116). The first elastic member (130) and the second elastic member (140) are disposed on the side of the base (116) away from the bearing platform (114).

13. The support assembly for an electrophoresis skid according to claim 12, characterized in that, The shaft (121) includes a first shaft segment (1215) and a second shaft segment (1216) coaxially connected. The first shaft segment (1215) passes through the support platform (114), and the second shaft segment (1216) passes through the base (116). The locking cap (122) is connected to the first shaft segment (1215).

14. The support assembly for an electrophoresis skid according to claim 12, characterized in that, The support member (115) has an open structure.

15. An electrophoresis sled, characterized in that, include: Frame (200); The support assembly as described in any one of claims 1-14 is provided with a plurality of supports connected to the frame (200), the plurality of supports (100) are all provided on the same side of the frame (200), and the bracket (110) of the support assembly (100) is connected to the frame (200).

16. The electrophoresis skid according to claim 15, characterized in that, The frame (200) includes two parallel longitudinal beams (210) and a crossbeam (220) connected to the longitudinal beams (210). Several stacking platforms (300) are provided on the longitudinal beams (210), and the stacking platforms (300) are all positioned opposite the longitudinal beams (210) and are spaced at the same distance from the longitudinal beams (210).

17. The electrophoresis skid according to claim 15, characterized in that, It also includes a cover (400) and a first electrical connector electrically connected to the support assembly (100). The cover (400) is connected to the frame (200). The cover (400) has a cavity inside and an opening at one end. The first electrical connector is located inside the cavity. The side of the cover (400) with the opening is away from the support assembly (100).

18. An electrophoretic transport system, characterized in that, include: A swing arm (500) is provided with a copper brush mechanism (600) and a support base (700); The electrophoresis skid as described in any one of claims 15-17, wherein the electrophoresis skid is connected to the swing arm (500) via the support base (700), and the copper brush mechanism (600) is electrically connected to the support assembly (100).

19. The electrophoretic transport system according to claim 18, characterized in that, The support base (700) includes a base plate (710), a support rod (720), and a second electrical connector (730) electrically connected to the copper brush mechanism (600). The base plate (710) is connected to the swing rod (500). The two ends of the support rod (720) are respectively connected to the base plate (710) and the second electrical connector (730). The electrophoresis skid includes a cover (400) and a first electrical connector electrically connected to the support assembly (100). The cover (400) is connected to the frame (200). The cover (400) has a cavity inside and an opening at one end. The first electrical connector is located in the cavity. The side of the cover (400) with the opening is away from the support assembly (100). The second electrical connector (730) extends into the cavity and is connected to the first electrical connector.

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