Automobile engine cover coating electrophoresis jig

Abstract

The utility model discloses an automobile engine cover coating electrophoresis jig, and relates to the technical field of automobile manufacturing, the automobile engine cover coating electrophoresis jig comprises a rack, a locking mechanism and a first limiting mechanism, the rack is provided with a mounting cavity through which at least partial structure of a water tank cross beam passes, the locking mechanism comprises a first locking piece, a second locking piece and a connecting piece, the first locking piece and the second locking piece are both connected with the connecting piece, and the first limiting mechanism can limit the connecting piece from moving to the rotating position from the locking position. According to the technical scheme, a double-locking structure of the first locking piece and the second locking piece is adopted, the first locking piece and the second locking piece act on the engine cover and the water tank cross beam respectively in the locking position state, a stable stress system is formed, the engine cover can be kept at a fixed opening angle, and the service life of the engine cover is prolonged. The engine cover is effectively prevented from shaking or being accidentally opened in the electrophoresis process, the situation that an inner plate coating is uneven due to the fact that the angle is unstable is avoided, the consistency of coating quality is guaranteed, and the anti-rust performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to an electrophoresis fixture for coating automobile engine hoods. Background Technology

[0002] In modern automobile manufacturing, electrophoresis coating is a crucial step in the overall vehicle corrosion protection process. The engine hood, as a key openable component of the vehicle body structure, plays a vital role in rust prevention. However, during electrophoresis, the inability to maintain a fixed opening angle for the engine hood within the electrophoresis tank compromises its stability. This results in uneven coating on the inner panel of the engine hood, affecting the rust prevention effect and ultimately reducing the overall corrosion resistance of the vehicle. Utility Model Content

[0003] The main purpose of this utility model is to propose an electrophoresis fixture for automotive engine hood coating, which aims to solve the problem of how to keep the opening and closing angle of the engine hood fixed during the electrophoresis process.

[0004] To achieve the above objectives, this utility model proposes an electrophoresis fixture for automotive engine hood coating, the automotive engine hood electrophoresis fixture comprising:

[0005] A frame having a mounting cavity through which at least a portion of the structure of a water tank crossbeam passes;

[0006] A locking mechanism includes a first locking member, a second locking member, and a connecting member. Both the first and second locking members are connected to the connecting member. The connecting member is rotatably mounted on the frame and has a rotating position and a locking position, allowing it to reciprocate between the rotating and locking positions. When the connecting member is in the locking position, the first locking member engages with a lifting ring on the engine hood, and the second locking member abuts against the side of the radiator crossbeam away from the engine hood to restrict the engine hood from rotating away from the radiator crossbeam. When the connecting member is in the rotating position, the first locking member is separated from the lifting ring, and the second locking member is separated from the radiator crossbeam.

[0007] A first limiting mechanism is rotatably mounted on the frame, and the first limiting mechanism is capable of restricting the connecting member from moving from the locking position to the rotating position.

[0008] In one embodiment, the first locking member includes a first connecting portion and a first limiting portion, both of which are connected to the first connecting portion. The second locking member includes a second connecting portion and a second limiting portion, both of which are connected to the second connecting portion. The connecting portion is located in the locking position. The first limiting portion engages with a lifting ring on the engine hood, and the second limiting portion abuts against the side of the water tank crossbeam away from the engine hood. In the rotating position, the first limiting portion is separated from the lifting ring, and the second limiting portion is separated from the water tank crossbeam.

[0009] In one embodiment, the first limiting mechanism includes a rotating rod and a limiting block. The limiting block is connected to the rotating rod and has a slot. The rotating rod is rotatably mounted on the frame so that the rotating rod can drive the slot to engage or disengage with the connector located in the locking position.

[0010] In one embodiment, the limiting block includes a block body and a counterweight block connected to each other. The block body is connected to the rotating rod. The block body is provided with the slot. The counterweight block can drive the block body to move so that the slot engages with the connector to restrict the connector from moving from the locking position to the rotating position.

[0011] And / or,

[0012] The rotating rod has a first end and a second end at its two ends along its extension direction. A rotating part is provided between the first end and the second end. The rotating part is rotatably mounted on the frame. The second end is connected to the limiting block so that the first end can drive the limiting block to move through the second end, so that the slot can engage or disengage with the connector.

[0013] In one embodiment, the automotive engine hood electrophoresis fixture further includes a support mechanism connected to the frame. The support mechanism is capable of abutting against the side of the engine hood facing the radiator beam to restrict the engine hood from rotating in a direction closer to the radiator beam.

[0014] In one embodiment, the support mechanism includes a support rod and an abutment member. The abutment member includes an abutment portion and a snap-fit ​​portion. The support rod is connected to the frame. One end of the support rod away from the frame is connected to the abutment portion. The side of the abutment portion away from the support rod is connected to the snap-fit ​​portion. The snap-fit ​​portion can engage with a limiting hole on the engine hood. The abutment portion can abut against the side of the engine hood facing the water tank crossbeam.

[0015] And / or,

[0016] The number of the support mechanisms is at least two, and the at least two support mechanisms are spaced apart along the length of the frame.

[0017] In one embodiment, the connector includes a connecting rod and a handle. The handle, the first locking member, and the second locking member are all connected to the connecting rod. The connecting rod is rotatably mounted on the frame. The handle has a rotating position and a locking position, so that the handle can reciprocate between the rotating position and the locking position.

[0018] In one embodiment, the automotive engine hood electrophoresis fixture further includes a second limiting mechanism, which includes a first limiting rod and a second limiting rod. Both the first limiting rod and the second limiting rod are connected to the frame, and a limiting space is formed between the first limiting rod and the second limiting rod for the connecting rod to pass through.

[0019] In one embodiment, the frame includes a frame body and a support frame. The support frame includes a first support column and a second support column. Both the first support column and the second support column are connected to the frame body, and the first support column and the second support column are spaced apart along the width direction of the frame body. The first support column, the second support column, and the frame body together form the mounting cavity. The first support column and the second support column can abut against the side of the water tank crossbeam facing the engine cover.

[0020] In one embodiment, the first support column includes a first column body and a first abutting rod, and the second support column includes a second column body and a second abutting rod. Both the first column body and the second column body are connected to the frame body, and the first column body and the second column body are spaced apart along the width direction of the frame body. The first column body, the second column body, and the frame body enclose the mounting cavity. The first column body is connected to the first abutting rod, and the second column body is connected to the second abutting rod. Both the first abutting rod and the second abutting rod can abut against the side of the water tank crossbeam facing the engine hood.

[0021] And / or,

[0022] The number of the support frames is at least two, and the at least two support frames are spaced apart along the length direction of the frame body;

[0023] And / or,

[0024] The frame body is provided with a positioning post on the side facing the water tank beam, and the positioning post can be engaged with the positioning hole on the water tank beam.

[0025] In this embodiment of the invention, the frame serves as the basic support structure of the entire fixture, used to fix and support other components. The frame has a mounting cavity for at least a portion of the radiator beam under the engine hood to pass through, thereby achieving the overall installation and positioning of the automotive engine hood electrophoresis fixture. The connector, as the core component of the locking mechanism, connects and drives the first and second locking members. The connector is rotatably mounted on the frame and has two states: a locked position and a rotating position. It can switch between locking and releasing functions by rotation. The first locking member engages with a lifting ring on the engine hood to restrict the engine hood from rotating away from the radiator beam. The second locking member engages with the radiator beam away from the engine hood. One side of the hood abuts against and presses against the water tank crossbeam to form a reverse support force, enhancing locking stability and preventing the hood from shaking or opening due to external forces, thereby fixing the opening and closing angle of the hood. When the connector is in the locked position, the first locking member inserts into the lifting ring and locks, and the second locking member can press against the water tank crossbeam, thereby maintaining the fixed opening and closing angle of the hood and improving the stability of the hood during the electrophoresis process. When the connector is in the rotating position, the first locking member can separate from the lifting ring, and the second locking member can also separate from the water tank crossbeam, thus facilitating the disassembly of the automotive hood electrophoresis fixture. The first limiting mechanism can limit the connector from accidentally moving from the locked position to the rotating position, preventing the hood from loosening due to non-human operation. This embodiment of the invention employs a double locking structure with a first locking member and a second locking member. In the locked position, these members act on the engine hood and the radiator crossbeam respectively, forming a stable force system. This ensures the engine hood maintains a fixed opening angle, effectively preventing hood shaking or accidental opening during electrophoresis. It also avoids uneven coating on the inner panel due to angle instability, ensuring consistent coating quality and improving rust resistance. The use of a connecting member allows for reciprocating movement between the locked and rotating positions, facilitating quick locking and unlocking actions and improving operational convenience and production efficiency. The first limiting mechanism makes operation safer and more controllable, reducing the risk of human error, lowering the labor intensity of operators, and effectively preventing... The connector slides from the locking position to the rotating position without human intervention, preventing the engine hood from accidentally opening or closing during electrophoresis, protecting the production line equipment from damage, and improving overall production safety. This automotive engine hood electrophoresis fixture has a compact structure, small size, is easy to clean, and has a high degree of modularity. It can be made of high-strength materials, such as 304 stainless steel, with uniform stress distribution and good fatigue resistance. It is suitable for high-frequency, long-term electrophoresis operations, extending its service life and reducing maintenance costs. Furthermore, the locking point and limit position of this automotive engine hood electrophoresis fixture can be adjusted according to different vehicle models, making it suitable for various engine hood structures and different specifications of water tank beams, with good versatility and adaptability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the electrophoresis fixture for coating automobile engine hoods according to this utility model;

[0028] Figure 2 This is a schematic diagram of another perspective of an embodiment of the electrophoresis fixture for coating automobile engine hoods according to this utility model;

[0029] Figure 3 This is another structural schematic diagram of an embodiment of the electrophoretic coating fixture for automobile engine hoods of this utility model.

[0030] Figure 4 This is another perspective structural schematic diagram of an embodiment of the electrophoretic coating fixture for automobile engine hoods according to this utility model.

[0031] Explanation of icon numbers:

[0032] 100. Automotive engine hood electrophoresis jig; 1. Frame; 11. Frame body; 12. Support frame; 121. First support column; 1211. First column body; 1212. First abutting rod; 122. Second support column; 1221. Second column body; 1222. Second abutting rod; 13. Mounting cavity; 14. Positioning column; 2. Locking mechanism; 21. First locking element; 211. First connecting part; 212. First limiting part; 22. Second locking element; 221. Second connecting part; 222. Second limiting part; 2 3. Connector; 231. Connecting rod; 232. Handle; 2321. Locking position; 3. First limiting mechanism; 31. Rotating rod; 311. First end; 312. Second end; 313. Rotating part; 32. Limiting block; 321. Block body; 3211. Slot; 322. Counterweight block; 4. Support mechanism; 41. Support rod; 42. Abutting part; 421. Abutting part; 422. Snapping part; 43. Reinforcing rib; 5. Second limiting mechanism; 51. First limiting rod; 52. Second limiting rod; 53. Limiting space.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] In modern automobile manufacturing, electrophoresis coating is a crucial step in the overall vehicle corrosion protection process. The engine hood, as a key openable component of the vehicle body structure, plays a vital role in rust prevention. However, during electrophoresis, the inability to maintain a fixed opening angle for the engine hood within the electrophoresis tank compromises its stability. This results in uneven coating on the inner panel of the engine hood, affecting the rust prevention effect and ultimately reducing the overall corrosion resistance of the vehicle.

[0038] After careful research, the applicant discovered that most automobile manufacturers currently use traditional engine hood electrophoresis fixtures for positioning and support in their painting workshops. These traditional fixtures are mostly simple metal bracket structures that rely mainly on gravity or simple clamping methods to fix the engine hood. However, with the continuous upgrading and replacement of automobile products and the increasing diversification of vehicle designs, especially with the increased complexity of engine hood structures and frequent changes in opening and closing angles, traditional fixtures can no longer meet the precise positioning and stable support requirements of new engine hoods during the electrophoresis process. This results in the engine hood being unable to maintain a stable opening and closing angle and fixed state, which seriously affects the quality of electrophoretic rust prevention.

[0039] The main purpose of this invention is to provide an electrophoresis fixture for automotive engine hood coating to solve the problem of how to keep the opening and closing angle of the engine hood fixed during the electrophoresis process.

[0040] Please see Figure 1 In one embodiment of this utility model, the automotive engine hood electrophoresis fixture 100 includes a frame 1, a locking mechanism 2, and a first limiting mechanism 3. The frame 1 has a mounting cavity 13 through which at least a portion of the structure of the water tank crossbeam passes. The locking mechanism 2 includes a first locking member 21, a second locking member 22, and a connecting member 23. Both the first locking member 21 and the second locking member 22 are connected to the connecting member 23. The connecting member 23 is rotatably mounted on the frame 1 and has a rotating position (not shown) and a locking position 2321, so that the connecting member 23 can be in the rotating position. The connecting member 23 moves back and forth between the locking position 2321 and the locking position 2321; the first locking member 21 engages with the lifting ring on the engine hood, and the second locking member 22 abuts against the side of the water tank crossbeam away from the engine hood to restrict the engine hood from rotating away from the water tank crossbeam; the connecting member 23 is in the rotating position, the first locking member 21 is separated from the lifting ring, and the second locking member 22 is separated from the water tank crossbeam; the first limiting mechanism 3 is rotatably mounted on the frame 1, and the first limiting mechanism 3 can restrict the connecting member 23 from moving from the locking position 2321 to the rotating position.

[0041] In this embodiment of the utility model, the frame 1 serves as the basic support structure of the entire fixture, used to fix and support other components. The frame 1 is provided with a mounting cavity 13 for at least a portion of the structure of the water tank crossbeam under the engine hood to pass through, thereby achieving the overall installation and positioning of the automotive engine hood electrophoresis fixture 100. The connecting member 23, as the core component of the locking mechanism 2, is used to connect and drive the first locking member 21 and the second locking member 22. The connecting member 23 is rotatably mounted on the frame 1, having two states: a locking position 2321 and a rotating position. It can switch between locking and releasing functions by rotation. The first locking member 21 engages with the lifting ring on the engine hood to restrict the engine hood from rotating away from the water tank crossbeam. The second locking member 22 is used to engage with the water tank crossbeam away from the engine hood. One side of the hood abuts against and presses against the water tank crossbeam to form a reverse support force, enhancing locking stability and preventing the hood from shaking or opening due to external force, thereby fixing the opening and closing angle of the hood. When the connecting piece 23 is in the locked position 2321, the first locking piece 21 is inserted into the lifting ring and locked, and the second locking piece 22 can press against the water tank crossbeam, thereby maintaining the fixed opening and closing angle of the hood and improving the stability of the hood during the electrophoresis process. When the connecting piece 23 is in the rotating position, the first locking piece 21 can separate from the lifting ring, and the second locking piece 22 can also separate from the water tank crossbeam, thereby facilitating the disassembly of the automotive hood coating electrophoresis fixture 100. The first limiting mechanism 3 can limit the connecting piece 23 from accidentally moving from the locked position 2321 to the rotating position, preventing the hood from loosening under non-human operation.

[0042] The technical solution of this utility model employs a double locking structure of a first locking member 21 and a second locking member 22. In the locked position 2321, these components act on the engine hood and the water tank crossbeam respectively, forming a stable force system. This ensures the engine hood maintains a fixed opening angle, effectively preventing it from shaking or accidentally opening during electrophoresis. It also avoids uneven coating of the inner panel due to angle instability, ensuring consistent coating quality and improving rust resistance. The connecting member 23 allows for reciprocating movement between the locked position 2321 and the rotating position, facilitating quick locking and unlocking actions and improving operational convenience and production efficiency. The first limiting mechanism 3 makes operation safer and more controllable, reducing the risk of human error, lowering the labor intensity of operators, and effectively preventing... The connector 23 is prevented from sliding from the locking position 2321 to the rotating position without human intervention, thus avoiding accidental opening or closing of the engine hood during electrophoresis, protecting the production line equipment from damage, and improving overall production safety. The automotive engine hood electrophoresis fixture 100 has a compact structure, small size, is easy to clean, and has a high degree of modularity. It can be made of high-strength materials, such as 304 stainless steel, with uniform stress distribution and good fatigue resistance. It is suitable for high-frequency and long-term electrophoresis operation environments, extending its service life and reducing maintenance costs. Furthermore, the automotive engine hood electrophoresis fixture 100 can adjust the locking point and limit position according to different vehicle models, making it suitable for various engine hood structures and water tank beams of different specifications, with good versatility and adaptability.

[0043] Please see Figure 1 and Figure 2In one embodiment, the first locking member 21 includes a first connecting portion 211 and a first limiting portion 212. Both the first limiting portion 212 and the connecting member 23 are connected to the first connecting portion 211. The second locking member 22 includes a second connecting portion 221 and a second limiting portion 222. Both the second limiting portion 222 and the connecting member 23 are connected to the second connecting portion 221. The connecting member 23 is located in the locking position 2321. The first limiting portion 212 engages with the lifting ring on the engine hood, and the second limiting portion 222 abuts against the side of the radiator crossbeam away from the engine hood. When the connecting member 23 is in the rotating position, the first limiting portion 212 is separated from the lifting ring, and the second limiting portion 222 is separated from the radiator crossbeam. Specifically, the first limiting portion 212 engaging with the lifting ring on the engine hood and the second limiting portion 222 abutting against the radiator crossbeam constitute a two-point locking structure. This two-point fixing method is effective. To prevent the engine hood from shifting or shaking due to liquid impact or vibration during electrophoresis, ensuring it maintains the set opening and closing angle, and improving coating uniformity and rust prevention performance, the snap-fit ​​structure between the first limiting part 212 and the lifting ring is simple and reliable, facilitating quick installation by operators. When disassembly is required, simply switching the connecting part 23 to the rotation position will automatically release the limiting state, making operation simple and error-free. When used in conjunction with the first limiting mechanism 3, it can also prevent unintended unlocking due to misoperation, ensuring equipment and personal safety. The first connecting part 211 and the second connecting part 221 serve as transition structures, allowing the position and angle of the first limiting plate and the second limiting part 222 to be adjusted according to different vehicle models. This enables the automotive engine hood coating electrophoresis fixture 100 to be adapted to various engine hood structures and water tank beams of different sizes, possessing good versatility and expandable application capabilities.

[0044] Please see Figure 1 and Figure 2In one embodiment, the first limiting mechanism 3 includes a rotating rod 31 and a limiting block 32. The limiting block 32 is connected to the rotating rod 31, and a slot 3211 is provided on the limiting block 32. The rotating rod 31 is rotatably mounted on the frame 1 so that the rotating rod 31 can drive the slot 3211 to engage or disengage with the connector 23 located in the locking position 2321. Specifically, the engagement between the slot 3211 and the connector 23 can effectively limit the unexpected movement of the connector 23 from the locking position 2321 to the rotating position, preventing the engine cover from failing to lock due to vibration or external force during the electrophoresis process, and improving the locking performance. The overall fixture ensures safety and reliability, effectively protecting the coating production line equipment from damage and improving overall production safety. The design of the rotating rod 31 makes the operation of the first limit mechanism 3 more intuitive and convenient, improving the ease and controllability of operation. Operators only need to manually rotate the rotating rod 31 to complete the unlocking or locking action between the limit block 32 and the connecting piece 23, reducing labor intensity and improving work efficiency. Moreover, the first limit mechanism 3 adopts a mechanical snap-fit ​​connection, which does not require additional power drive, ensuring stable operation and a low failure rate. This effectively reduces later maintenance costs and is conducive to long-term use and promotion.

[0045] Please see Figure 2In one embodiment, the limiting block 32 includes a block body 321 and a counterweight 322 connected to each other. The block body 321 is connected to the rotating rod 31. A slot 3211 is provided on the block body 321. The counterweight 322 can drive the block body 321 to move so that the slot 3211 engages with the connector 23, thereby limiting the movement of the connector 23 from the locking position 2321 to the rotating position. And / or, the two ends of the rotating rod 31 along its extension direction are a first end 311 and a second end 312, respectively. A rotating part 313 is provided between the first end 311 and the second end 312. The rotating part 313 is rotatably mounted on the frame 1. The second end 312 is connected to the limiting block 32, so that the first end 311 can drive the limiting block 32 to move through the second end 312, thereby engaging or disengaging the slot 3211 with the connector 23. Specifically, the design of the counterweight 322 utilizes gravity to allow the limiting block 32 to move. In non-human operation, the block hangs naturally, moving the block body 321 to engage with the connector 23 via the slot 3211, thus achieving a self-locking function. This prevents the connector 23 from accidentally sliding from the locking position 2321 to the rotating position due to vibration, impact, or other reasons, effectively ensuring the fixed state of the engine cover during the electrophoresis process and improving process reliability. In actual use, different weights of counterweights 322 can be replaced according to different working conditions to adjust the limiting torque and adapt to the changing working environment of the electrophoresis workshop. The first end 311 of the rotating rod 31 serves as the operating end, linked with the second end 312 through a lever principle. The operator only needs to press down on the first end 311 to move the second end 312 upward, thereby disengaging the slot 3211 on the limiting block 32 from the connector 23 and completing the unlocking action. The lever structure greatly reduces the force required for manual operation, improves operational convenience and work efficiency, and reduces labor intensity. In addition, in this embodiment, the rotating part 313 and the frame 1 can be rotatably connected via a pin or hinge, which is not limited in this embodiment.

[0046] Please see Figure 1In one embodiment, the automotive engine hood electrophoresis fixture 100 further includes a support mechanism 4, which is connected to the frame 1. The support mechanism 4 can abut against the side of the engine hood facing the radiator crossbeam to restrict the engine hood from rotating towards the radiator crossbeam. Specifically, by setting the support mechanism 4, it abuts against the engine hood before the first locking member 21 and provides reverse support to restrict the engine hood from rotating towards the radiator crossbeam. Through cooperation with the first locking member 21 and the second locking member 22, the opening and closing angle of the engine hood is kept fixed, which further improves the stability of the engine hood during the electrophoresis process and avoids the problem of direct contact between the first locking member 21 and the inner surface of the engine hood. It can prevent coating damage, paint scratches and other effects caused by the contact of the first locking member 21, and ensure that the engine hood maintains a complete and uniform coating state throughout the electrophoresis process, improving rust prevention performance and appearance quality. Furthermore, by reasonably arranging the height and angle of the support mechanism 4, the opening and closing angle and spatial posture of the engine hood can be further optimized, improving the overall assembly accuracy and process consistency.

[0047] Please see Figure 1 and Figure 3 In one embodiment, the support mechanism 4 includes a support rod 41 and an abutment member 42. The abutment member 42 includes an abutment portion 421 and a locking portion 422. The support rod 41 is connected to the frame 1. One end of the support rod 41 away from the frame 1 is connected to the abutment portion 421. The side of the abutment portion 421 away from the support rod 41 is connected to the locking portion 422. The locking portion 422 can engage with a limiting hole on the engine hood. The abutment portion 421 can abut against the side of the engine hood facing the water tank crossbeam. And / or, the number of support mechanisms 4 is at least two, and at least two support mechanisms 4 are along the frame. The length direction of 1 is spaced apart; specifically, the snap-fit ​​part 422 engages with the existing limiting hole on the engine cover, enabling the support mechanism 4 to be quickly and accurately positioned at the designated position on the engine cover, and effectively preventing the support rod 41 from slipping or shifting, thereby significantly improving the structural stability and operational reliability of the support mechanism 4. The abutment part 421 is close to the side of the engine cover facing the water tank beam, providing reverse support force to prevent the first locking member 21 from causing unnecessary pressure or contact on the engine cover when passing through the lifting ring, ensuring that the paint surface is intact and undamaged during the painting process; such as Figure 1 As shown, the length direction of the frame 1 is the left-right direction, and two support mechanisms 4 are spaced apart on the frame 1 along the left-right direction, thus forming a multi-point support structure. This makes the engine cover more evenly stressed during the electrophoresis process, effectively dispersing local pressure and avoiding deformation of the engine cover due to concentrated stress at a single point, thereby ensuring its structural integrity and coating quality. In this embodiment, the specific number of support mechanisms 4 can be selected according to the actual size of the engine cover, and this embodiment does not limit this.

[0048] In this embodiment, to enhance the structural strength of the support rod 41, the support mechanism 4 also includes a reinforcing rib 43. Both the frame 1 and the support rod 41 are connected to the reinforcing rib 43 to form a stable triangular or frame structure, which significantly improves the load-bearing capacity and deformation resistance of the support mechanism 4. It is particularly suitable for high-frequency and long-term electrophoresis operation environments, extends the service life of the support mechanism 4, and reduces maintenance frequency and cost.

[0049] Please see Figure 1 and Figure 3 In one embodiment, the connector 23 includes a connecting rod 231 and a handle 232. The handle 232, the first locking member 21, and the second locking member 22 are all connected to the connecting rod 231. The connecting rod 231 is rotatably mounted on the frame 1. The handle 232 has a rotating position and a locking position 2321, so that the handle 232 can reciprocate between the rotating position and the locking position 2321. Specifically, the handle 232, the first locking member 21, and the second locking member 22 are all integrated on the same connecting rod 231 to form a unified linkage mechanism, which enables the components to move synchronously, improving the stability and reliability of the structure. The handle 232, as an operating component, is ergonomically designed, easy to hold and rotate, and allows the operator to easily control the state of the connector 23 through manual rotation. The switching from locking to releasing can be completed without additional tools or complex operations, which greatly improves work efficiency. Moreover, the operation is intuitive and the actions are clear, which helps to reduce the risk of misoperation and improve the safety of operation. It is also suitable for operators with different skill levels, reducing training costs. In addition, in this embodiment, the connecting rod 231 and the frame 1 can be rotatably connected by a pin or a hinge, and this embodiment does not limit this.

[0050] Please see Figure 1 , Figure 2 and Figure 4 In one embodiment, the automotive engine hood coating electrophoresis fixture 100 further includes a second limiting mechanism 5. The second limiting mechanism 5 includes a first limiting rod 51 and a second limiting rod 52. Both the first limiting rod 51 and the second limiting rod 52 are connected to the frame 1. A limiting space 53 is formed between the first limiting rod 51 and the second limiting rod 52 for the connecting rod 231 to pass through. Specifically, the second limiting mechanism 5 constrains the movement trajectory of the connecting rod 231 through the limiting space 53 between the first limiting rod 51 and the second limiting rod 52, preventing the connecting rod 231 from deviating, shaking, or tilting during rotation, ensuring that it moves smoothly along the set path, improving the stability and reliability of the overall structure. Furthermore, the guiding protection of the connecting rod 231 through the limiting space 53 can also prevent abnormal friction or collision between the connecting rod 231 and other components during movement, extending the service life of the entire automotive engine hood coating electrophoresis fixture 100 and reducing the frequency and cost of later equipment maintenance.

[0051] Please see Figure 1 In one embodiment, the frame 1 includes a frame body 11 and a support frame 12. The support frame 12 includes a first support column 121 and a second support column 122. Both the first support column 121 and the second support column 122 are connected to the frame body 11, and the first support column 121 and the second support column 122 are spaced apart along the width direction of the frame body 11. The first support column 121, the second support column 122, and the frame body 11 enclose a mounting cavity 13. The first support column 121 and the second support column 122 can abut against the side of the water tank crossbeam facing the engine hood. Specifically, as shown in the figure... Figure 1 As shown, the width direction of the frame body 11 is the front-to-back direction. The mounting cavity 13 on the frame 1 facilitates the quick placement and positioning of the water tank beam. The first support column 121 and the second support column 122 abut against the side of the water tank beam facing the engine hood from both sides in the front-to-back direction, providing uniform force support. This allows the automotive engine hood electrophoresis fixture 100 to be stably placed on the water tank beam. The support columns and the frame body 11 are fixedly connected to form a stable frame structure. While bearing the weight of components such as the engine hood and locking mechanism 2, it can still maintain good resistance to deformation and is suitable for high-frequency and long-term electrophoresis operations. Furthermore, the distance between the first support column 121 and the second support column 122 in the front-to-back direction of the frame body 11 can be adjusted according to the size of the water tank beam of different vehicle models, making the fixture adaptable to various specifications of engine hood structures in the electrophoresis workshop, with good versatility and expandable application capabilities.

[0052] Please see Figure 1 and Figure 3In one embodiment, the first support column 121 includes a first column body 1211 and a first abutting rod 1212, and the second support column 122 includes a second column body 1221 and a second abutting rod 1222. Both the first column body 1211 and the second column body 1221 are connected to the frame body 11, and are spaced apart along the width direction of the frame body 11. The first column body 1211, the second column body 1221, and the frame body 11 together form a mounting cavity 13. The first column body 1211 is connected to the first abutting rod 1212, and the second column body 1221 is connected to the second abutting rod 1222. Both the first abutting rod 1212 and the second abutting rod 1222 are capable of engaging with the frame body 11. The water tank crossbeam abuts against the side facing the engine hood; and / or, the number of support brackets 12 is at least two, and the at least two support brackets 12 are spaced apart along the length of the bracket body 11; and / or, a positioning post 14 is provided on the side of the bracket body 11 facing the water tank crossbeam, and the positioning post 14 can engage with the positioning hole on the water tank crossbeam; specifically, the first abutting rod 1212 and the second abutting rod 1222 are respectively provided at the bottom end of the first post body 1211 and the second post body 1221, forming multi-point contact with the base of the water tank crossbeam. This abutting design makes the support more stable, effectively preventing deformation or slippage caused by local stress concentration, and at the same time enhancing the anti-disturbance ability of the entire fixture system under liquid impact in the electrophoresis tank; Figure 1 As shown, in this embodiment, two support frames 12 are spaced apart on the frame 1 in the left-right direction. This not only improves the overall load-bearing capacity of the frame 1 but also effectively disperses the force, preventing deformation or instability of the frame 1 due to localized force concentration. Simultaneously, the reasonable distribution of the two support frames 12 in the left-right direction enhances the vibration and displacement resistance of the frame 1 during the electrophoresis process, helping to ensure the stability of the frame 1. This ensures that the engine hood maintains its set posture throughout the coating process, improving coating uniformity and process reliability. In this embodiment, the specific number of support frames 12 can be selected according to the size of the water tank crossbeam; this embodiment does not limit this. The positioning post 14 engages with the positioning hole on the water tank crossbeam, achieving rapid and precise positioning between the frame 1 and the water tank crossbeam. This avoids displacement or misalignment caused by assembly errors, simplifies the installation process, improves operational efficiency, and ensures that the engine hood maintains its set opening and closing angle throughout the electrophoresis process, improving overall process consistency and coating quality.

[0053] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A coating electrophoresis fixture for automobile engine hoods, characterized in that, The automotive engine hood electrophoresis coating fixture includes: A frame having a mounting cavity through which at least a portion of the structure of a water tank crossbeam passes; A locking mechanism includes a first locking member, a second locking member, and a connecting member. Both the first and second locking members are connected to the connecting member. The connecting member is rotatably mounted on the frame and has a rotating position and a locking position, allowing it to reciprocate between the rotating and locking positions. When the connecting member is in the locking position, the first locking member engages with a lifting ring on the engine hood, and the second locking member abuts against the side of the radiator crossbeam away from the engine hood to restrict the engine hood from rotating away from the radiator crossbeam. When the connecting member is in the rotating position, the first locking member is separated from the lifting ring, and the second locking member is separated from the radiator crossbeam. A first limiting mechanism is rotatably mounted on the frame, and the first limiting mechanism is capable of restricting the connecting member from moving from the locking position to the rotating position.

2. The automotive engine hood electrophoresis coating fixture as described in claim 1, characterized in that, The first locking member includes a first connecting portion and a first limiting portion, both of which are connected to the first connecting portion. The second locking member includes a second connecting portion and a second limiting portion, both of which are connected to the second connecting portion. The connecting portion is located in the locking position. The first limiting portion engages with a lifting ring on the engine hood, and the second limiting portion abuts against the side of the water tank crossbeam away from the engine hood. The connecting portion is located in the rotating position, where the first limiting portion is separated from the lifting ring, and the second limiting portion is separated from the water tank crossbeam.

3. The automotive engine hood electrophoresis coating fixture as described in claim 1, characterized in that, The first limiting mechanism includes a rotating rod and a limiting block. The limiting block is connected to the rotating rod and has a slot. The rotating rod is rotatably mounted on the frame so that the rotating rod can drive the slot to engage or disengage with the connector located in the locking position.

4. The automotive engine hood electrophoresis coating fixture as described in claim 3, characterized in that, The limiting block includes a block body and a counterweight block connected to each other. The block body is connected to the rotating rod. The block body is provided with the slot. The counterweight block can drive the block body to move so that the slot engages with the connector to restrict the connector from moving from the locking position to the rotating position. And / or, The rotating rod has a first end and a second end at its two ends along its extension direction. A rotating part is provided between the first end and the second end. The rotating part is rotatably mounted on the frame. The second end is connected to the limiting block so that the first end can drive the limiting block to move through the second end, so that the slot can engage or disengage with the connector.

5. The automotive engine hood electrophoresis coating fixture as described in claim 1, characterized in that, The automotive engine hood electrophoresis fixture also includes a support mechanism connected to the frame. The support mechanism is capable of abutting against the side of the engine hood facing the water tank crossbeam to restrict the engine hood from rotating in a direction closer to the water tank crossbeam.

6. The automotive engine hood electrophoresis coating fixture as described in claim 5, characterized in that, The support mechanism includes a support rod and an abutment member. The abutment member includes an abutment portion and a snap-fit ​​portion. The support rod is connected to the frame. One end of the support rod away from the frame is connected to the abutment portion. The side of the abutment portion away from the support rod is connected to the snap-fit ​​portion. The snap-fit ​​portion can engage with a limiting hole on the engine hood. The abutment portion can abut against the side of the engine hood facing the water tank crossbeam. And / or, The number of the support mechanisms is at least two, and the at least two support mechanisms are spaced apart along the length of the frame.

7. The electrophoretic coating fixture for automobile engine hoods as described in any one of claims 1 to 6, characterized in that, The connector includes a connecting rod and a handle. The handle, the first locking member, and the second locking member are all connected to the connecting rod. The connecting rod is rotatably mounted on the frame. The handle has a rotating position and a locking position, so that the handle can reciprocate between the rotating position and the locking position.

8. The automotive engine cover electrophoresis fixture as described in claim 7, characterized in that, The automotive engine hood electrophoresis fixture also includes a second limiting mechanism, which includes a first limiting rod and a second limiting rod. Both the first limiting rod and the second limiting rod are connected to the frame, and a limiting space is formed between the first limiting rod and the second limiting rod for the connecting rod to pass through.

9. The electrophoretic coating fixture for automobile engine hoods as described in any one of claims 1 to 6, characterized in that, The frame includes a frame body and a support frame. The support frame includes a first support column and a second support column. Both the first support column and the second support column are connected to the frame body, and the first support column and the second support column are spaced apart along the width direction of the frame body. The first support column, the second support column and the frame body enclose the mounting cavity. The first support column and the second support column can abut against the side of the water tank crossbeam facing the engine cover.

10. The automotive engine hood electrophoresis fixture as described in claim 9, characterized in that, The first support column includes a first column body and a first abutting rod, and the second support column includes a second column body and a second abutting rod. Both the first column body and the second column body are connected to the frame body, and the first column body and the second column body are spaced apart along the width direction of the frame body. The first column body, the second column body, and the frame body enclose the mounting cavity. The first column body is connected to the first abutting rod, and the second column body is connected to the second abutting rod. Both the first abutting rod and the second abutting rod can abut against the side of the water tank crossbeam facing the engine hood. And / or, The number of the support frames is at least two, and the at least two support frames are spaced apart along the length direction of the frame body; And / or, The frame body is provided with a positioning post on the side facing the water tank beam, and the positioning post can be engaged with the positioning hole on the water tank beam.

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