Electrophoretic jig for front engine bonnet

Abstract

The application relates to the technical field of tooling, and discloses an electrophoresis tooling for a front engine hood, which comprises a tooling main body, a moving part and a fixing rod; one end of the tooling main body is fixed to a vehicle frame main body along the length direction of the tooling main body; the position of the moving part on the other end of the tooling main body is adjustable along the length direction of the tooling main body; one end of the fixing rod is arranged on the moving part, and the other end of the fixing rod is suitable for being connected with the front engine hood. The electrophoresis tooling according to the application improves the use convenience.

Description

Technical Field

[0001] This application relates to the field of tooling technology, and in particular to an electrophoresis tooling for a front engine hood. Background Technology

[0002] In the automotive manufacturing industry, to ensure corrosion and rust prevention of the car body, all car manufacturers perform electrophoresis on the car body to guarantee its anti-corrosion performance. In the automotive electrophoresis process, the pretreatment and electrophoresis stages involve multiple process tanks. The car body must enter these tanks for cleaning and electrophoresis operations. During this process, the car body panels must be fixed in place, and the front and rear covers must be opened to a certain angle to allow all air to escape from the cavities during electrophoresis, ensuring that all body panels adhere to the electrophoretic paint.

[0003] In related technologies, electrophoresis fixtures are difficult to use on different vehicle models, causing inconvenience. Therefore, how to improve the ease of use of electrophoresis fixtures is a technical problem that urgently needs to be solved. Utility Model Content

[0004] This application provides an electrophoresis fixture for the front engine hood, which improves ease of use.

[0005] To achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, embodiments of this application provide an electrophoresis fixture for a front engine hood, comprising a fixture body, a movable part, and a fixing rod; one end of the fixture body is fixed to the vehicle frame body along the length direction of the fixture body; the position of the movable part at the other end of the fixture body is adjustable along the length direction of the fixture body; one end of the fixing rod is disposed on the movable part, and the other end of the fixing rod is adapted to engage with the front engine hood.

[0007] According to the electrophoresis fixture proposed in the first aspect of this application, the rigid connection between the fixed end and the main body of the vehicle frame ensures the overall stability of the fixture, preventing the hood from shifting and shaking during the electrophoresis process, preventing the hood surface from colliding with the fixture and causing coating scratches, or causing local tilting of the hood due to unstable support. Furthermore, by adjusting the position of the moving part, it can flexibly adapt to the size differences of the hoods of different vehicle models. There is no need to design a special fixture for a single vehicle model. Only the fixed position of the moving part needs to be adjusted to achieve reliable support for the hoods of multiple vehicle models, improving ease of use. At the same time, the lifting height of the hood can be adjusted by the electrophoresis fixture to ensure that the air inside the hood is completely expelled, thereby ensuring the quality of the inner cavity electrophoresis.

[0008] Optionally, the fixing rod includes a first fixing rod and a second fixing rod, one end of the first fixing rod and one end of the second fixing rod are fixed to the moving part, and the other end of the first fixing rod and the other end of the second fixing rod are adapted to engage with the front hood.

[0009] In the above solution, the first and second fixing rods work together to support the hood. The first and second fixing rods can simultaneously limit the hood's sway in the horizontal or vertical direction, ensuring that the hood maintains a preset posture during electrophoresis, thus improving the stability of the hood during the electrophoresis process. For hoods of different vehicle models, only the distance between the first and second fixing rods needs to be adjusted to match the snap-fit ​​requirements of different vehicle models' hoods, without having to replace the entire fixing rod assembly, further expanding the vehicle model compatibility range of the electrophoresis fixture.

[0010] Optionally, at least one of the first fixing rod and the second fixing rod may be constructed as an elastic element.

[0011] In the above solution, on the one hand, the first and / or second fixing rods, which are constructed as elastic elements, can reduce the difficulty of snapping. Simply pressing the elastic elements closer to each other can achieve snapping with the front hood. After releasing, the elastic elements unfold away from each other by their own restoring force, automatically forming a clamping force on the front hood. On the other hand, the elastic elements can provide a continuous and adaptive clamping force, which not only avoids the problem of damaging the front hood or easily falling off due to dimensional deviations caused by rigid clamping, but also can adapt to the snapping positions of the front hoods of different models, thus broadening the vehicle compatibility range of the electrophoresis fixture.

[0012] Optionally, the first fixing rod and the second fixing rod have the same structure and both include a main body section, an abutting section and a mating section connected in sequence. One end of the main body section is fixed to the moving part, the abutting section is connected to the other end of the main body section and the mating section respectively, the abutting section abuts against the lower surface of the front hood, and the mating section is inserted into the limiting hole of the front hood.

[0013] In the above solution, the main body section provides a stable support foundation for the entire fixing rod, preventing the front hood from shifting due to the swaying of the fixing rod. The abutting section abuts against the lower surface of the front hood, which can distribute the support pressure, increase the contact area between the electrophoresis fixture and the front hood, further limit the vertical displacement of the front hood, and further improve the overall stability during the electrophoresis process. With the section inserted into the limiting hole of the front hood, the front hood can be firmly fixed, preventing the front hood from twisting or sliding in the horizontal direction. The segmented functional design achieves stable support and precise positioning of the front hood, and is compatible with front hoods of different vehicle models. It only requires matching the position of the limiting hole of the front hood with the contour of the lower surface of the front hood, further expanding the versatility and ease of use of the electrophoresis fixture.

[0014] Optionally, the abutting section is set at an angle to the main body section, and the abutting section is set at an angle to the mating section.

[0015] In the above scheme, setting the abutment section at an angle to the main body section allows the abutment section to better fit the actual shape of the lower surface of the hood, increasing the contact area between the abutment section and the hood. This not only avoids localized deformation of the hood due to insufficient contact area, but also helps to disperse the weight of the hood and the impact force of the electrophoretic liquid, preventing the abutment section from slipping off the lower surface of the hood. In addition, this angle design can adapt to the differences in the tilt angle and limit hole layout of the lower surface of the hood of different models. There is no need to design a special angle fixing rod for each model. By presetting a reasonable angle range, the needs of most models can be covered, expanding the versatility of the tooling. At the same time, it reduces assembly errors caused by angle mismatch, ensures the stability of the hood posture during electrophoresis, and helps to avoid uneven coating or missed coating at the edges.

[0016] Optionally, the moving part includes a nut that is threaded into the other end of the tooling body.

[0017] In the above solution, the displacement of the moving part can be precisely controlled by rotating the nut, which helps to meet the support spacing requirements of different vehicle models' hoods or electrophoresis processes, further improving ease of use. At the same time, the self-locking characteristic of the threaded connection ensures that the moving part will not loosen on its own after being adjusted into place, and always maintains a stable position, which helps to improve the reliability of the support for the hood. In addition, this structure is simple to operate, requiring no special tools. Position adjustment can be completed simply by rotating the nut, shortening the preparation time for vehicle model switching. Moreover, the threaded fit is mature and durable, with low manufacturing and maintenance costs, and can adapt to high-frequency use scenarios in the workshop for a long time, further improving the practicality and economy of the tooling.

[0018] Optionally, there may be multiple nuts, which are spaced apart along the length of the tooling body.

[0019] In the above scheme, multiple nuts distributed at intervals can work together to drive the fixed rod to move, which can distribute the locking force between the moving part and the main body of the tooling to multiple contact points, greatly reducing the risk of loosening caused by vibration and liquid impact during electrophoresis. Especially when supporting a heavy front engine cover, multi-point fixing can avoid thread stripping or displacement of the moving part caused by local stress concentration, ensuring long-term positional stability.

[0020] Optionally, the movable part also includes a housing, which is fitted onto one end of the nut and the fixing rod and is fixedly connected to one end of the nut and the fixing rod, respectively.

[0021] In the above solution, on the one hand, the outer shell can fix the nut and the fixing rod together, improving the convenience of use; on the other hand, the outer shell can integrate the nut and the fixing rod into a stable whole structure, avoiding relative displacement between the two due to vibration and impact, strengthening the overall rigidity of the moving part, ensuring that the nut and the fixing rod move synchronously when adjusting the position, and ensuring accurate support and positioning of the front engine hood.

[0022] Optionally, the electrophoresis fixture may also include a limiting rod, which is located at one end of the fixture body to restrict the movement of the fixture body along its length.

[0023] In the above solution, the limiting rod can further reinforce the connection between the tooling body and the vehicle frame body. Although one end of the tooling body is fixed to the vehicle frame, there is still a risk that the tooling body may shift along its length direction during the electrophoresis process as the vehicle body rotates. The limiting rod directly restricts this displacement in this direction through physical blocking, ensuring that the installation reference of the tooling body remains constant. This avoids the front hood support posture shift due to the displacement of the body, thereby helping to reduce problems such as incomplete coating and uneven thickness of the electrophoretic coating on the surface of the front hood.

[0024] Optionally, the limiting rod protrudes from the outer circumferential surface of the tooling body along the radial direction of the tooling body.

[0025] In the above scheme, the structure protruding from the outer peripheral surface can prevent the main body of the tooling from moving. The limiting rod can more directly and firmly abut against the blocking surface, preventing the main body of the tooling from moving along the length direction. The protruding limiting rod has a larger contact area and stronger blocking force, which can effectively counteract the displacement trend and ensure that the installation benchmark of the main body of the tooling is constant. Attached Figure Description

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

[0027] Figure 1 This is a schematic diagram of the overall structure of the electrophoresis fixture in some embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the overall structure of the electrophoresis fixture in some other embodiments of this application;

[0029] Figure 3 This is a structural schematic diagram of the fixing rod in some other embodiments of this application.

[0030] [Explanation of Labels in the Attached Image]

[0031] 100. Tooling body;

[0032] 200. Moving part; 210. Nut; 220. Housing;

[0033] 300. Fixing rod; 310. First fixing rod; 320. Second fixing rod;

[0034] 301. Main section; 302. Connecting section; 303. Supporting section;

[0035] 400. Limit rod. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0038] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0041] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0042] In the automotive manufacturing industry, to ensure corrosion and rust prevention of car bodies, all car manufacturers perform electrophoresis on the car bodies to guarantee their anti-corrosion performance. The electrophoresis process involves 15 process tanks in the pretreatment and electrophoresis stages. The car body must enter these tanks for cleaning and electrophoresis. During this process, the car body doors and hoods must be secured and the front and rear hoods opened to a certain angle to allow all air to escape from the cavities during electrophoresis, ensuring 100% adhesion of electrophoretic paint to all body panels.

[0043] Our company's pretreatment and electrophoresis process uses a swing arm electrophoresis line, and the swing angle during the body electrophoresis production is 45°. Therefore, during electrophoresis, the front hood needs to be opened to a certain angle to ensure that all air in each cavity can be discharged within the swing angle range, ensuring that the sheet metal of the cavity is coated with electrophoretic paint.

[0044] In related technologies, electrophoresis fixtures are difficult to use on different vehicle models. There are two types of front hood fixtures on site, resulting in too many fixtures. At the same time, there are too many racks for storing the fixtures on site, causing inconvenience in use. Therefore, how to improve the ease of use of electrophoresis fixtures is a technical problem that urgently needs to be solved.

[0045] Therefore, in order to improve the ease of use of the electrophoresis fixture and meet the electrophoresis requirements of multiple vehicle models, this application proposes an electrophoresis fixture for a front engine hood. Along the length of the fixture body 100, one end of the fixture body 100 is fixed to the vehicle frame body; along the length of the fixture body 100, the position of the moving part 200 at the other end of the fixture body 100 is adjustable. This configuration ensures the overall stability of the fixture through the rigid connection between the fixed end and the vehicle frame body, preventing the front engine hood from shifting during the electrophoresis process. The swaying motion prevents the hood surface from colliding with the tooling and causing coating scratches, and reduces local tilting of the hood due to unstable support. Furthermore, by adjusting the position of the moving part 200, it can flexibly adapt to the size differences of hoods on different vehicle models. There is no need to design a special tooling for a single model; simply adjusting the fixed position of the moving part 200 is sufficient to reliably support hoods on multiple models, improving ease of use. Simultaneously, the lifting height of the hood can be adjusted using the electrophoresis tooling to ensure complete air removal from the hood, thereby guaranteeing the quality of the inner cavity electrophoresis.

[0046] The following description, with reference to the accompanying drawings, describes an electrophoresis fixture for the front engine hood proposed in this application.

[0047] Please refer to Figures 1-2An electrophoresis fixture for a front hood according to a first aspect embodiment of this application includes a fixture body 100, a movable part 200, and a fixed rod 300.

[0048] Along the length of the fixture body 100, one end of the fixture body 100 is fixed to the vehicle frame body. It can be understood that the fixed connection between one end of the fixture body 100 and the vehicle frame body can support the entire electrophoresis fixture. As the rigid structure of the vehicle, the vehicle frame body can provide a stable mounting base for the fixture and prevent the electrophoresis fixture from shaking or shifting during the electrophoresis process.

[0049] Along the length of the tooling body 100, the position of the movable part 200 at the other end of the tooling body 100 is adjustable. It can be understood that by adjusting the position of the movable part 200 on the tooling body 100, the size differences of the front hood of different models can be flexibly adapted. There is no need to design a special tooling for a single model. Only the fixed position of the movable part 200 needs to be adjusted to achieve reliable support for the front hood of multiple models, improving the convenience of use. At the same time, it is easy to adjust the lifting height of the front hood to ensure that the air inside the front hood is completely discharged, thereby ensuring the quality of the inner cavity electrophoresis.

[0050] One end of the fixing rod 300 is disposed on the moving part 200, and the other end of the fixing rod 300 is adapted to engage with the front hood. It can be understood that the fixing rod 300 can serve to fix the front hood and ensure that the front hood remains stable during the electrophoresis process.

[0051] In other embodiments, please refer to Figure 2 and Figure 3 The fixing rod 300 includes a first fixing rod 310 and a second fixing rod 320. It can be understood that the first fixing rod 310 and the second fixing rod 320 can work together to support the front hood.

[0052] One end of the first fixing rod 310 and one end of the second fixing rod 320 are fixed to the moving part 200, and the other ends of the first fixing rod 310 and the second fixing rod 320 are adapted to engage with the front engine cover. With this configuration, the first fixing rod 310 and the second fixing rod 320 can simultaneously limit the swaying of the front engine cover in the horizontal or vertical direction, ensuring that the front engine cover maintains a preset posture during electrophoresis and improving the stability of the front engine cover during the electrophoresis process.

[0053] On the other hand, the first fixing rod 310 and the second fixing rod 320 can be simultaneously engaged in the same fixing hole. For the front hood of different car models, only the distance between the first fixing rod 310 and the second fixing rod 320 needs to be adjusted to match the engagement requirements of the front hood of different car models. There is no need to replace the entire fixing rod assembly, which further expands the vehicle model compatibility range of the electrophoresis fixture. In addition, it can also improve the ease of loading and unloading. The first fixing rod 310 and the second fixing rod 320 not only help to improve the connection reliability, but also avoid the cumbersome loading and unloading caused by too many engagement points. Operators can quickly complete the engagement and disengagement of the electrophoresis fixture and the front hood without affecting the operation cycle of the electrophoresis production line.

[0054] In other embodiments, at least one of the first fixing rod 310 and the second fixing rod 320 is configured as an elastic element.

[0055] In the above solution, on the one hand, the first fixing rod 310 and / or the second fixing rod 320, which are constructed as elastic elements, can reduce the difficulty of snapping the front hood. The elastic elements can be pressed together to reach into the snapping position and snapped with the front hood. After being released, the elastic elements unfold away from each other by their own restoring force, automatically forming a clamping force on the front hood. Compared with the assembly method that requires rigid fixing rods to be forcibly aligned, this greatly improves the loading and unloading efficiency and reduces operational errors.

[0056] On the other hand, the elastic element can provide continuous and adaptive clamping force, which avoids the problem of damage to the hood or easy detachment caused by rigid clamping due to dimensional deviation, and can also adapt to the snap-fit ​​positions of the hood of different models, thus broadening the range of models that the tooling can be adapted to.

[0057] Meanwhile, the continuous elastic clamping force can keep the front hood stable throughout the electrophoresis process, preventing it from loosening due to the weakening of clamping force caused by vibration, ensuring the constant posture of the front hood, and helping to ensure the uniformity of the electrophoretic coating.

[0058] In addition, the restoring force of the elastic element can offset the wear gap during long-term use, maintain the clamping effect through its own deformation, extend the service life of the tooling, and avoid the problem of frequent replacement of the fixing rod 300 due to wear.

[0059] In other embodiments, please refer to Figure 2 and Figure 3 The first fixing rod 310 and the second fixing rod 320 have the same structure and both include a main body section 301, an abutment section 302 and a mating section 303 connected in sequence. As an example, only one of the first fixing rod 310 and the second fixing rod 320 may include the main body section 301, the abutment section 302 and the mating section 303 connected in sequence, and this application does not limit this.

[0060] One end of the main body section 301 is fixed to the moving part 200, and the abutting section 302 connects the other end of the main body section 301 and the mating section 303 respectively. It can be understood that the main body section 301 can provide a stable support foundation for the entire fixed rod 300, and prevent the front hood from shifting due to the shaking of the fixed rod 300.

[0061] The abutting section 302 abuts against the lower surface of the front hood, and the mating section 303 inserts into the limiting hole of the front hood. It can be understood that the abutting section 302 abutting against the lower surface of the front hood can disperse the support pressure, increase the contact area between the electrophoresis fixture and the front hood, further limit the vertical displacement of the front hood, and further improve the overall stability during the electrophoresis process.

[0062] The segment 303 is inserted into the limiting hole of the front hood to prevent the front hood from twisting or sliding in the horizontal direction. The segmented functional design achieves stable support and precise positioning of the front hood. At the same time, it is compatible with the front hoods of different models. It only requires matching the position of the limiting hole of the front hood with the contour of the lower surface of the front hood, further expanding the versatility and ease of use of the electrophoresis tooling.

[0063] In other embodiments, please refer to Figure 2 and Figure 3 The abutment section 302 is angled to the main body section 301, and the abutment section 302 is angled to the mating section 303. It is understandable that the lower surface of the hood is not flat; often, due to vehicle design, it has a certain tilt angle or curvature. The angled arrangement of the abutment section 302 with the main body section 301 allows the abutment section 302 to better conform to the actual shape of the lower surface of the hood, increasing the contact area between the abutment section 302 and the hood. This avoids localized deformation of the hood due to insufficient contact area and helps to distribute the weight of the hood and the impact force of the electrophoretic fluid, preventing the abutment section 302 from slipping off the lower surface of the hood.

[0064] On the other hand, the limiting holes of the front hood are usually opened at a certain angle to the lower surface, such as the vertical or inclined holes of the front hood frame. The angle between the abutting section 302 and the mating section 303 can further improve the fixing firmness and ease of use. Smooth insertion can be achieved without forcibly bending the fixing rod 300, avoiding insertion jamming or damage to the limiting holes caused by the angle deviation of the mating section 303. At the same time, it helps to further limit the displacement of the front hood in the horizontal or vertical direction.

[0065] In addition, this angle design can adapt to the different tilt angles and limit hole layouts of the lower surface of the hood of different models. There is no need to design a special angle fixing rod 300 for each model. By presetting a reasonable angle range, it can cover the needs of most models, broaden the versatility of the tooling, reduce assembly errors caused by angle mismatch, ensure the stability of the hood posture during electrophoresis, and help avoid uneven coating or corner coating problems.

[0066] As an example, the mating section 303 can be constructed as an arc-shaped structure, and the abutting section 302 can be constructed as an arc-shaped structure opposite to the opening of the mating section 303. The opening direction of the abutting section 302 is towards another fixed rod 300. The mating section 303 can extend into the limiting hole of the front hood and be locked against the side wall of the limiting hole and one end face of the front hood in the thickness direction. The abutting section 302 can abut against the other end face of the front hood in the thickness direction, thereby further improving the stability of the front hood.

[0067] This design allows the contact section 302 to better conform to the inclined or curved surface of the lower surface of the hood, increasing the contact area and avoiding slippage or damage caused by single-point contact. At the same time, it can decompose the supporting force into the anti-sag force vertical to the hood and the anti-slip force along the surface. Combined with the angle of section 303, it can also ensure precise insertion with the limiting hole, restrict torsion, and form multi-directional constraints. In addition, it adapts to the angle differences of the hood of different vehicle models, improving the support stability of the electrophoresis fixture.

[0068] In other embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The movable part 200 includes a nut 210, which is threaded into the other end of the tooling body 100. Understandably, the operator can precisely control the displacement of the movable part 200 by rotating the nut 210, which helps meet the support spacing requirements of different vehicle hoods or electrophoresis processes, further improving ease of use.

[0069] Meanwhile, the self-locking characteristic of the threaded connection ensures that the moving part 200 will not loosen on its own due to vibration or liquid impact during the electrophoresis process after being adjusted into position, thus maintaining a stable position and ensuring reliable support for the front engine hood. In addition, this structure is simple to operate, requiring no special tools. Position adjustment can be completed simply by rotating the nut 210, shortening the preparation time for vehicle model switching. Moreover, the threaded fit is mature and durable, with low manufacturing and maintenance costs, and can adapt to high-frequency use scenarios in the workshop for a long time, further improving the practicality and economy of the tooling.

[0070] As an example, the movable part 200 can also be adjusted in position by cooperating with the tooling body 100 through pin holes. Specifically, multiple sets of positioning holes are opened in the tooling body 100 along the length direction, and a pluggable positioning pin is provided on the movable part 200. When adjusting, the positioning pin is pulled out, the movable part 200 is pushed to the target position, and then the positioning pin is inserted into the corresponding positioning hole to fix it.

[0071] As an example, the movable part 200 can also be adjusted in position by cooperating with a sliding rail and a locking component with the fixture body 100. Specifically, the fixture body 100 is provided with a sliding rail along its length, such as a T-rail or dovetail rail. The movable part 200 slides along the sliding rail and is secured with locking components such as bolts or handle-type locking blocks. During adjustment, the locking component is loosened, allowing the movable part 200 to slide smoothly along the sliding rail. Once in position, the locking component is tightened to fix it. This method enables continuous stepless adjustment of the movable part 200, adapting to the subtle requirements of different vehicle models for support spacing. The sliding rail also limits the offset direction of the movable part 200, preventing misalignment during adjustment, and provides strong stability after locking, making it suitable for scenarios requiring frequent fine-tuning.

[0072] As an example, the movable part 200 can also be adjusted in position by engaging with the tooling body 100 using elastic clips and slots. Specifically, continuous or spaced slots are provided on the tooling body 100, and elastic clips, such as metal springs or plastic clips, are installed on the movable part 200. During adjustment, pressing the clips disengages them from the slots, and pushing the movable part 200 to the target position causes the clips to automatically engage with the corresponding slots under elastic action. This method requires no tools, allows for fast adjustment, and is suitable for lightweight tooling. The elastic clips can also buffer minor vibrations and prevent accidental displacement of the movable part 200. However, the support is relatively weak, making it more suitable for scenarios where the front hood is relatively lightweight.

[0073] As an example, the moving part 200 can also be adjusted in position by cooperating with the tooling body 100 through a worm gear mechanism. Specifically, the moving part 200 and the tooling body 100 are connected by a worm gear transmission. Rotating the worm can drive the moving part 200 to move along the length of the tooling body 100. After adjustment, the position is fixed by utilizing the self-locking characteristics of the worm gear.

[0074] In other embodiments, please refer to Figure 2 and Figure 3 There are multiple nuts 210, and the multiple nuts 210 are spaced apart along the length of the tooling body 100.

[0075] In the above scheme, the multiple nuts 210 distributed at intervals can work together to move the fixed rod 300, which can distribute the locking force between the moving part 200 and the tooling body 100 to multiple contact points, greatly reducing the risk of loosening caused by vibration and liquid impact during electrophoresis. Especially when supporting the heavy front engine cover, multi-point fixing can avoid thread stripping or displacement of the moving part 200 caused by local stress concentration, ensuring long-term positional stability.

[0076] Multiple spaced nuts 210 provide more fixing points for the moving part 200. Multi-point locking allows the moving part 200 to fit more tightly with the tooling body 100, reducing the shaking caused by gaps. At the same time, it makes the support force on the tooling body 100 more evenly distributed, avoiding deformation of the tooling body 100 caused by long-term single-point force, extending the overall service life and improving practicality.

[0077] In other embodiments, please refer to Figure 2 and Figure 3 The movable part 200 also includes a housing 220, which is sleeved on one end of the nut 210 and the fixing rod 300, and is fixedly connected to one end of the nut 210 and the fixing rod 300, respectively.

[0078] In the above solution, on the one hand, the outer casing 220 can fix the nut 210 and the fixing rod 300 together, improving the ease of use; on the other hand, the outer casing 220 can integrate the nut 210 and the fixing rod 300 into a stable whole structure, avoiding relative displacement between the two due to vibration and impact, strengthening the overall rigidity of the moving part 200, ensuring that the nut 210 and the fixing rod 300 move synchronously when adjusting the position, and ensuring accurate support and positioning of the front engine hood.

[0079] In addition, the housing 220 provides a convenient operating and installation reference. Operators can rotate the adjusting nut 210 by holding the housing 220 to avoid direct contact with the threads and causing hand injuries. The regular shape of the housing 220 can also help to quickly locate the installation direction of the fixing rod 300, simplifying the assembly process of the fixing rod 300. At the same time, the housing 220 can cover the complex internal structure, reduce the risk of collision damage during workshop operations, and improve the safety and durability of tooling.

[0080] In a specific embodiment, the first fixing rod 310 and the second fixing rod 320 are made of spring steel. The two spring steels are welded to the two nuts 210, and the outer shell 220 is then wrapped around the spring steel and welded to the nuts 210 to improve the overall firmness and prevent the spring steel from breaking free.

[0081] In a specific embodiment, the ends of the two spring steels are kept at a certain distance to increase the clamping force after clamping the front hood.

[0082] In other embodiments, please refer to Figure 1 and Figure 2 The electrophoresis fixture also includes a limiting rod 400, which is disposed at one end of the fixture body 100 to restrict the movement of the fixture body 100 along its length.

[0083] In the above scheme, the limiting rod 400 can further strengthen the connection between the tooling body 100 and the vehicle frame body. Although one end of the tooling body 100 is fixed to the vehicle frame, there is still a risk that the tooling body 100 may shift along the length direction as the vehicle body rotates during the electrophoresis process. The limiting rod 400 directly restricts the displacement in this direction by physical blocking, ensuring that the installation reference of the tooling body 100 remains constant, avoiding the displacement of the body and causing the front hood support posture to shift, thereby helping to reduce problems such as missed coating and uneven thickness of the electrophoretic coating on the surface of the front hood.

[0084] Secondly, the limiting rod 400 can provide a stable reference for the position adjustment of the moving part 200. The moving part 200 needs to be adjusted along the length of the tooling body 100 to adapt to different vehicle models. After the limiting rod 400 fixes the position of the body, the adjustment of the moving part 200 can be accurately positioned based on the fixed length scale of the body, ensuring the accuracy of the front hood support spacing of different vehicle models and avoiding adjustment deviations.

[0085] In other embodiments, please refer to Figure 1 and Figure 2 Along the radial direction of the tooling body 100, the limiting rod 400 protrudes from the outer peripheral surface of the tooling body 100.

[0086] In the above scheme, the structure protruding from the outer peripheral surface can prevent the tooling body 100 from moving. The limiting rod 400 can more directly and firmly abut against the blocking surface to prevent the tooling body 100 from moving along the length direction. The protruding limiting rod 400 has a larger contact area and stronger blocking force, which can effectively counteract the displacement trend and ensure that the installation reference of the tooling body 100 is constant.

[0087] On the other hand, the protruding limit rod 400 makes it easy for operators to install and align. Without disassembling or inspecting the internal structure of the tooling, the position of the limit rod 400 can be observed directly, and it can be quickly aligned with the limit groove, stop and other structures on the frame, shortening the installation and debugging time and reducing installation deviations caused by the concealment of the limit rod 400.

[0088] This design does not occupy the adjustment space of the moving part 200 along the length direction, nor does it require slotting and reserving a limiting structure inside the tooling body 100, simplifying the main body processing technology. At the same time, if the protruding limiting rod 400 is worn or deformed, it is easy to visually inspect and quickly replace it, reducing maintenance difficulty and ensuring long-term positioning effect.

[0089] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0090] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0091] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0092] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An electrophoresis fixture for a front engine compartment canopy, characterized in that, include: Tooling body (100), along the length direction of the tooling body (100), one end of the tooling body (100) is fixed to the vehicle frame body; The movable part (200) is adjustable at the other end of the tooling body (100) along the length direction of the tooling body (100); A fixing rod (300) is provided at one end of the moving part (200), and the other end of the fixing rod (300) is adapted to engage with the front hood.

2. The electrophoresis fixture according to claim 1, characterized in that, The fixing rod (300) includes a first fixing rod (310) and a second fixing rod (320). One end of the first fixing rod (310) and one end of the second fixing rod (320) are fixed to the moving part (200). The other end of the first fixing rod (310) and the other end of the second fixing rod (320) are adapted to engage with the front hood.

3. The electrophoresis fixture according to claim 2, characterized in that, At least one of the first fixing rod (310) and the second fixing rod (320) is constructed as an elastic element.

4. The electrophoresis fixture according to claim 2, characterized in that, The first fixing rod (310) and the second fixing rod (320) have the same structure and each includes a main body section (301), an abutment section (302) and a mating section (303) connected in sequence. One end of the main body section (301) is fixed to the moving part (200). The abutment section (302) is connected to the other end of the main body section (301) and the mating section (303). The abutment section (302) abuts against the lower surface of the front hood. The mating section (303) is inserted into the limiting hole of the front hood.

5. The electrophoresis fixture according to claim 4, characterized in that, The abutting section (302) is set at an angle to the main body section (301), and the abutting section (302) is set at an angle to the mating section (303).

6. The electrophoresis fixture according to claim 1, characterized in that, The movable part (200) includes a nut (210) which is threaded into the other end of the tooling body (100).

7. The electrophoresis fixture according to claim 6, characterized in that, There are multiple nuts (210), and the multiple nuts (210) are spaced apart along the length direction of the tooling body (100).

8. The electrophoresis fixture according to claim 6, characterized in that, The movable part (200) further includes a housing (220), which is sleeved on one end of the nut (210) and the fixing rod (300) and is fixedly connected to one end of the nut (210) and the fixing rod (300) respectively.

9. The electrophoresis fixture according to claim 1, characterized in that, The electrophoresis fixture also includes a limiting rod (400), which is disposed at one end of the fixture body (100) to restrict the movement of the fixture body (100) along its length.

10. The electrophoresis fixture according to claim 9, characterized in that, Along the radial direction of the tooling body (100), the limiting rod (400) protrudes from the outer peripheral surface of the tooling body (100).

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