Automobile cover finish paint coating supporting tool

Abstract

The utility model relates to the technical field of automobile finish paint coating, in particular to an automobile cover finish paint coating supporting tool which comprises a supporting handle, a supporting base frame and a locking mechanism, the supporting handle is fixedly connected with the supporting base frame, the supporting base frame comprises a lock catch installation portion, the locking mechanism comprises a pulling plug and a limiting piece, and the limiting piece is fixedly connected with the supporting handle. The limiting piece is fixedly connected with the lock catch mounting part, a protruding piece is arranged on the pulling plug, a through hole is formed in the lock catch mounting part, the pulling plug penetrates through the through hole, and when the locking mechanism is in a locking state, the protruding piece abuts against the limiting piece. Operators do not need to repeatedly use tools to tighten or detach bolts, and production work efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive topcoat coating technology, and more specifically, to a support fixture for automotive hood topcoat coating. Background Technology

[0002] In the automotive painting process, the quality of the topcoat spraying on the hood directly affects the overall appearance of the vehicle. To achieve separate painting of the hood from the body and ensure complete coverage of the hood edges, fenders, and the area inside the front engine compartment, specialized tooling is needed to lift the hood to a specific angle for the operation. Traditional hood handle clamps generally use bolt connections, where threaded holes are pre-drilled during the stamping of the hood inner panel, and bolts are used to rigidly fix the clamp to the hood. For example, in existing technology CN217940618U, the handle support frame includes a crossbeam with fixing holes, through which bolts are used to fix the crossbeam to the lower hood of the vehicle.

[0003] While this type of fixing method can ensure connection strength, it has significant drawbacks in practical applications: First, operators need to repeatedly use tools to tighten or loosen bolts, especially in the confined space of the front engine compartment. Tool operation poses a risk of interference and is time-consuming, with each disassembly and assembly taking an average of 30 to 40 seconds, seriously affecting the production line cycle time. Second, during installation, the machine cover needs to be raised to a large angle to observe the position of the threaded holes inside the cover, which is inconvenient for workers. Third, the protruding structure of the bolt head forms a physical obstruction during spraying, resulting in quality defects such as missed spraying and uneven paint film thickness on the edge of the inner panel of the cover, requiring additional manual respraying and increasing the rework rate. Utility Model Content

[0004] The purpose of this utility model is to overcome the problem that operators of existing hood support fixtures need to repeatedly use tools to tighten or loosen bolts, and to provide a support fixture for automotive hood topcoat painting.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A support fixture for painting the topcoat of an automotive hood is provided, comprising a support handle and a support base. The support handle is fixedly connected to the support base. The support base includes a locking mounting part and a locking mechanism. The locking mechanism includes a pull bolt and a limiting member. The limiting member is fixedly connected to the locking mounting part. The pull bolt is provided with a protrusion. The locking mounting part is provided with a through hole. The pull bolt is inserted through the through hole. When the locking mechanism is in the locked state, the protrusion abuts against the limiting member.

[0007] During the operation of the above scheme, when the tooling needs to fix the machine cover, the operator aligns the locking mounting part with the locking buckle on the inner plate of the machine cover, and aligns the locking buckle with the through hole of the locking mounting part, and then pushes the pull bolt to move axially. The pull bolt passes through the through hole of the locking mounting part and passes through the locking buckle. At this time, the protrusion on the surface of the pull bolt moves to the position of the limiting part, and forms a mechanical interlock with the limiting part under the structural limiting action. At this point, the contact surfaces of the protrusion and the limiting component create axial and circumferential constraints, preventing the bolt from sliding and rotating in the opposite direction. This rigidly connects the support handle to the inner panel of the hood, ensuring that the hood's latch is firmly fixed within the latch mounting section. During the painting process in the paint shop, the robotic arm grabs the support handle and lifts the entire hood to a certain height. The painting robot then paints the hood. When the tooling needs to be disassembled after painting, the operator triggers the unlocking mechanism by pulling and rotating the bolt. This allows the protrusion to disengage from the limiting component and unlock, after which the bolt can freely exit the through hole of the latch mounting section, and the hood latch can freely exit the latch mounting section. The entire process requires no disassembly or reassembly of the threaded connection, effectively improving the operator's work efficiency. At the same time, the operator only needs to slightly lift the hood to complete the installation of the tooling, making it convenient for workers. During painting, the painting robot can paint the hood completely in one go without any minor physical obstructions, resulting in a better overall paint appearance quality.

[0008] Furthermore, the support frame also includes a mounting frame, which is fixedly connected to the latch mounting part. The limiting member is located on the mounting frame. A locking plate is provided on the side of the mounting frame away from the latch mounting part. The pull bolt is movably connected to the locking plate. The mounting frame is configured to provide a fulcrum for the pull bolt. One end of the pull bolt is inserted into the through hole, and the other end is inserted through the locking plate, forming a stable support for the pull bolt on both sides.

[0009] Furthermore, the mounting bracket is provided with a first crossbar, and the limiting member is fixedly connected to the first crossbar. The limiting member is an L-shaped rod. The first crossbar provides a fixed support point for the installation of the limiting member and also improves the structural strength of the overall tooling. The limiting member is designed as an L-shaped rod to constrain the circumferential and axial movement of the pull bolt. The protrusion can be a block or an L-shaped rod. The mechanical interlock is formed by the mutual interference between the L-shaped rod and the protrusion. In this type of locking part, when entering the locked state, the pull bolt must first rotate until the protrusion disengages from the limiting member and the pull bolt can extend into or leave the through hole. Then, the pull bolt is pushed to slide towards the locking mounting part, so that the pull bolt passes through the locking buckle and the locking mounting part. Then, the pull bolt is rotated and pulled to slide away from the locking mounting part, so that the limiting member and the protrusion abut against each other and form interference.

[0010] Furthermore, the latch mounting part includes a frame, a hollow part, and a base plate. The frame surrounds the hollow part, the base plate is located on both sides of the bottom of the frame, the through hole is located on the base plate, the mounting bracket is fixedly connected to the base plate, and the frame is fixedly connected to the support handle. The latch mounting part adopts a U-shaped frame. During installation, the entire latch is inserted into the hollow part in the middle of the U-shaped frame. The plane of the frame is perpendicular to the plane of the latch. Under the premise of ensuring the stability of the installation, this type of frame latch mounting part can be directly processed from the waste materials cut from the workshop production. The structure is simple and the cost is low.

[0011] Furthermore, the bolt is also provided with a limiting protrusion ring, which is located on the shaft section of the bolt between the locking plate and the base plate. The limiting protrusion ring mainly plays a sliding positioning role for the entire bolt. When the bolt slides to the point where the limiting protrusion ring abuts against the base plate, the protrusion does not abut against or interfere with the limiting member, so as to complete the unlocking action.

[0012] Furthermore, it also includes a connecting block, the two ends of which are respectively connected to the frame and the support handle; the tooling is manufactured by welding to improve the overall welding strength, and in order to reserve welding space, a larger connecting block is used to weld the frame and the support handle together.

[0013] Furthermore, the connecting block is provided with a clearance groove; a larger connecting block may interfere with the latch during tooling installation, so a clearance groove is opened in the connecting block to avoid interference. During installation, the latch and the end of the clearance groove near the frame abut to form support. At the same time, the structure of the frame and the clearance groove has a large installation space, which can adapt to latches of different sizes and models, and can also improve the versatility of the entire tooling.

[0014] Furthermore, the mounting bracket is also provided with a second crossbar, which is fixedly connected to the side of the connecting block. Since the car hood is heavy, the structural strength of the tooling is required to be high. The second crossbar acts as a reinforcing rib to improve the structural strength and prevent deformation after long-term use.

[0015] Furthermore, a support rod is provided on the side of the base plate away from the frame, and the support rod is fixedly connected to the connecting block; after the buckle is installed into the hollow part, the support rod supports the buckle at the bottom, improving the stability of the buckle installation.

[0016] Furthermore, the support handle is T-shaped, and the handle includes a straight section and a curved section. One end of the straight section is fixedly connected to the connecting block, and the other end is fixedly connected to the curved section. The acute angle between the straight section and the curved section is within the range of 30° to 40°. The straight and curved sections of the support handle are designed based on ergonomics. The T-shaped handle end after the bend is relatively higher, so the operator does not need to bend over to perform installation work, reducing the operator's labor intensity. The bending angle within 30° to 40° is the most comfortable ergonomic design range for the operator.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The support frame includes a locking mounting part and a limiting part, as well as a locking mechanism. The locking mechanism includes a bolt and a limiting part. The limiting part is fixedly connected to the locking mounting part. The bolt is provided with a protrusion, and the locking mounting part is provided with a through hole. The bolt is inserted through the through hole. When the locking mechanism is in the locked state, the protrusion abuts against the limiting part. The tooling can be assembled and disassembled without disassembling the threaded connection, which effectively improves the operator's work efficiency. At the same time, the operator only needs to slightly lift the hood to complete the installation of the tooling, which is convenient for workers. During spraying, the spraying robot can spray the hood completely in one go without any minor physical obstruction, resulting in a better overall paint appearance quality.

[0019] 2. The mounting bracket has built-in first and second crossbars to improve structural strength and prevent deformation after long-term use; the connecting block is provided with clearance grooves, which not only improves welding strength, but also effectively prevents interference between the connecting block and the lock during installation. Attached Figure Description

[0020] Figure 1 A first-view perspective perspective view of a support fixture for applying topcoat to an automotive hood.

[0021] Figure 2 A second-view perspective perspective view of a support fixture for applying topcoat to an automotive hood.

[0022] Figure 3 This is a schematic diagram of the structure of a tie rod for a support fixture used in the topcoat application of automotive hood paint.

[0023] In the attached diagram: 100, support handle; 110, straight section; 120, curved section; 200, support base frame; 210, latch mounting part; 211, through hole; 212, frame; 213, hollow part; 214, base plate; 220, mounting bracket; 221, first crossbar; 222, second crossbar; 300, locking mechanism; 310, bolt; 311, protrusion; 312, limiting protrusion ring; 320, limiting part; 330, locking plate; 400, connecting block; 410, clearance through groove; 500, support rod. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] Example 1

[0027] This embodiment is a second embodiment of a support fixture for painting the topcoat of an automotive hood, such as... Figure 1 and 2 As shown, the device includes a support handle 100 and a support base 200, which are fixedly connected. The support base 200 includes a locking mounting part 210 and a locking mechanism 300. The locking mechanism 300 includes a bolt 310 and a limiting member 320, which are fixedly connected to the locking mounting part 210. The bolt 310 is provided with a protrusion 311, and the locking mounting part 210 is provided with a through hole 211. The bolt 310 is inserted through the through hole 211. When the locking mechanism 300 is in the locked state, the protrusion 311 abuts against the limiting member 320.

[0028] Specifically, the support frame 200 also includes a mounting frame 220, which is fixedly connected to the latch mounting part 210. The limiting member 320 is located on the mounting frame 220. A locking plate 330 is provided on the side of the mounting frame 220 away from the latch mounting part 210. The pull bolt 310 is movably connected to the locking plate 330. The mounting frame 220 is configured to provide a fulcrum for the installation of the pull bolt 310. One end of the pull bolt 310 is inserted into the through hole 211, and the other end is inserted through the locking plate 330, forming a stable support for the pull bolt 310 on both sides.

[0029] Specifically, the mounting bracket 220 is provided with a first crossbar 221, and a limiting member 320 is fixedly connected to the first crossbar 221. The limiting member 320 is an L-shaped rod. The first crossbar 221 provides a fixed support point for the installation of the limiting member 320, and also improves the structural strength of the overall tooling. The limiting member 320 is designed as an L-shaped rod to provide circumferential and axial movement constraints for the tie bolt 310. The protrusion 311 can be a block or an L-shaped rod. The interference between the L-shaped rod and the protrusion 311 forms... In this type of mechanical interlock, when the locking mechanism is engaged, the bolt 310 must first rotate until the protrusion 311 disengages from the limiting member 320 and the bolt 310 can extend into or out of the through hole 211. Then, the bolt 310 is pushed to slide towards the latch mounting part 210, so that the bolt 310 passes through the latch and the latch mounting part 210. Then, the bolt 310 is rotated and pulled to slide away from the latch mounting part 210, so that the limiting member 320 and the protrusion 311 abut against each other and form interference.

[0030] The working principle of the automotive hood topcoat coating support fixture in this embodiment is as follows:

[0031] The worker manually installs the latch on the hood into the latch mounting part 210, and then pushes the pull bolt 310 to move axially. The pull bolt 310 passes through the through hole 211 of the latch mounting part 210 and the latch. At this time, the protrusion 311 on the surface of the pull bolt 310 moves to the position of the limiting member 320. The part of the L-shaped limiting member 320 perpendicular to the first crossbar 221 provides axial constraint to the protrusion 311, and the part parallel to the first crossbar 221 provides circumferential constraint to the protrusion 311, preventing the pull bolt 310 from sliding and rotating in the opposite direction, and rigidly connecting the support handle 100 to the inner plate of the hood, ensuring that the latch of the hood is firmly fixed in the latch mounting part 210. When the tooling needs to be disassembled after painting, the operator triggers the unlocking mechanism by pushing and rotating the pull bolt 310 in the opposite direction, so that the protrusion 311 disengages from the limiting member 320 and releases the interlock.

[0032] The beneficial effects of this embodiment are as follows: With the setting of the bolt 310, the protrusion 311 on the bolt 310, the through hole 211 and the limiting member 320, the bolt 310 is inserted through the through hole 211. When the locking mechanism 300 is in the locked state, the protrusion 311 abuts against the limiting member 320. The entire process of tooling assembly and disassembly does not require disassembly or reassembly of the threaded connection, which effectively improves the work efficiency of the operator. The operator only needs to slightly lift the cover to complete the installation of the tooling, which is convenient for the worker to operate. During spraying, the spraying robot can spray the cover completely at one time without any minor physical obstruction, resulting in better overall paint appearance quality.

[0033] Example 2

[0034] This embodiment is a first embodiment of a support fixture for painting the topcoat of an automotive hood, such as... Figure 1 and 3 As shown, the difference from Embodiment 1 is as follows:

[0035] Specifically, the latch mounting part 210 includes a frame 212, a hollow part 213, and a base plate 214. The frame 212 surrounds the hollow part 213, and the base plate 214 is located on both sides of the bottom of the frame 212. The through hole 211 is located on the base plate 214. The mounting bracket 220 is fixedly connected to the base plate 214, and the frame 212 is fixedly connected to the support handle 100. The latch mounting part 210 adopts a U-shaped frame 212. During installation, the entire latch is inserted into the hollow part 213 in the middle of the U-shaped frame 212. The plane of the frame 212 is perpendicular to the plane of the latch. Under the premise of ensuring the stability of the installation, this latch mounting part 210 of the frame 212 can be directly processed from the waste material cut off from the workshop production. The structure is simple and the cost is low.

[0036] Specifically, the bolt 310 is also provided with a limiting protrusion ring 312, which is located on the shaft section of the bolt 310 between the locking plate 330 and the base plate 214. The limiting protrusion ring 312 mainly plays the role of sliding positioning for the entire bolt 310. When the bolt 310 slides to the point where the limiting protrusion ring 312 abuts against the base plate 214, the protrusion 311 just does not abut against or interfere with the limiting member 320, so as to complete the unlocking action.

[0037] Specifically, it also includes a connecting block 400, with the frame 212 and the support handle 100 connected to its two ends respectively. The tooling is manufactured by welding to improve the overall welding strength. In order to reserve welding space, a larger connecting block 400 is used to weld the frame 212 and the support handle 100 together.

[0038] The working principle of the automotive hood topcoat coating support fixture in this embodiment is as follows:

[0039] The latch on the cover is installed into the hollow part 213. The skeleton 212 around the hollow part 213 restricts the latch. When the sliding bolt 310 slides until the limiting protrusion 312 abuts against the base plate 214, the bolt 310 passes through the two through holes 211 of the base plate 214. The protrusion 311 does not contact the limiting part 320. Then rotate the bolt 310 so that the protrusion 311 can enter the groove formed by the L-shaped limiting part 320 and the first crossbar 221. Finally, slide the bolt 310 in the opposite direction until the protrusion 311 contacts the limiting part 320 to complete the locking. To unlock, simply reverse the operation.

[0040] The beneficial effects of this embodiment are that the skeleton 212, the bolt 310 and the connecting block 400 can all be processed directly from the waste materials cut off in the workshop. Under the premise of ensuring welding strength, the structure is simple and the cost is low.

[0041] Example 3

[0042] This embodiment is the third embodiment of a support fixture for painting the topcoat of an automotive hood, such as... Figure 1 and 2 As shown, the difference from Embodiment 1 is as follows:

[0043] Specifically, the connecting block 400 is provided with a clearance groove 410; a larger connecting block 400 may interfere with the latch during tooling installation, so a clearance groove 410 is made in the connecting block 400 to avoid interference. During installation, the latch and the end of the clearance groove 410 near the frame 212 abut to form support. At the same time, the structure of the frame 212 and the clearance groove 410 has a large installation space, which can adapt to latches of different sizes and models, and also improve the versatility of the entire tooling.

[0044] Specifically, the mounting bracket 220 is also equipped with a second crossbar 222, which is fixedly connected to the side of the connecting block 400. Since the car hood is heavy, the structural strength of the tooling is required to be high. The second crossbar 222 acts as a reinforcing rib to improve the structural strength and prevent deformation after long-term use.

[0045] Specifically, a support rod 500 is provided on the side of the base plate 214 away from the frame 212, and the support rod 500 is fixedly connected to the connecting block 400; after the buckle is installed into the hollow part 213, the support rod 500 supports the buckle at the bottom, improving the stability of the buckle installation.

[0046] Specifically, the support handle 100 is a T-shaped rod. The rod of the support handle 100 includes a straight section 110 and a curved section 120. One end of the straight section 110 is fixedly connected to the connecting block 400, and the other end is fixedly connected to the curved section 120. The acute angle between the straight section 110 and the curved section 120 is within the range of 30° to 40°. The straight section 110 and the curved section 120 of the support handle 100 are based on ergonomic design. The T-shaped handle end after the corner bend will be relatively higher, so the operator does not need to bend over to perform the installation work, reducing the labor intensity of the operator. The bending angle within 30° to 40° is the most comfortable ergonomic design range for the operator.

[0047] The working principle of the automotive hood paint coating support fixture in this embodiment is as follows: The setting of the first crossbar 221 and the second crossbar 222 improves the structural strength, prevents deformation after long-term use, and improves the service life of the fixture.

[0048] After the entire fixture is installed, the entire frame is pushed into the paint shop via an automated production line. The workers are away from the paint shop, and the robot's robotic arm grabs the curved section 120 of the T-shaped support handle 100 to lift the entire hood. The second crossbar 222 and the first crossbar 221 are used to improve the structural strength of the entire fixture to ensure that the robotic arm can pull the fixture to maintain a large hood opening until the robot automatically paints the hood.

[0049] The beneficial effects of this embodiment are: the second crossbar 222 and the first crossbar 221 improve the structural strength of the entire tooling and effectively ensure the service life of the supporting tooling. At the same time, the setting of the clearance through groove 410 enables the tooling to be compatible with locks of various sizes, improving its applicability.

[0050] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A support fixture for painting the topcoat of an automotive hood, comprising a support handle (100) and a support base (200), wherein the support handle (100) and the support base (200) are fixedly connected, characterized in that, The support base (200) includes a latch mounting part (210) and a locking mechanism (300). The locking mechanism (300) includes a bolt (310) and a limiting member (320). The limiting member (320) is fixedly connected to the support base (200). The bolt (310) is provided with a protrusion (311). The latch mounting part (210) is provided with a through hole (211). The bolt (310) is inserted through the through hole (211). When the locking mechanism (300) is in the locked state, the protrusion (311) abuts against the limiting member (320).

2. The automotive hood topcoat coating support fixture according to claim 1, characterized in that, The support frame (200) also includes a mounting frame (220), which is fixedly connected to the latch mounting part (210). The limiting member (320) is located on the mounting frame (220). A locking plate (330) is provided on the side of the mounting frame (220) away from the latch mounting part (210). The pull bolt (310) is movably connected to the locking plate (330).

3. The automotive hood topcoat coating support fixture according to claim 2, characterized in that, The mounting bracket (220) is provided with a first crossbar (221), and the limiting member (320) is fixedly connected to the first crossbar (221). The limiting member (320) is an L-shaped rod.

4. The automotive hood topcoat coating support fixture according to claim 2, characterized in that, The latch mounting part (210) also includes a frame (212), a hollow part (213) and a base plate (214). The frame (212) surrounds the hollow part (213). The base plate (214) is located on both sides of the bottom of the frame (212). The through hole (211) is located on the base plate (214). The mounting bracket (220) is fixedly connected to the base plate (214). The frame (212) is fixedly connected to the support handle (100).

5. The automotive hood topcoat coating support fixture according to claim 4, characterized in that, The bolt (310) is also provided with a limiting protrusion ring (312), which is located on the shaft segment of the bolt (310) between the locking plate (330) and the base plate (214).

6. The automotive hood topcoat coating support fixture according to claim 4, characterized in that, It also includes a connecting block (400), the two ends of which are connected to the frame (212) and the support handle (100), respectively.

7. The automotive hood topcoat coating support fixture according to claim 6, characterized in that, The connecting block (400) is provided with a clearance groove (410).

8. The automotive hood topcoat coating support fixture according to claim 6, characterized in that, The mounting bracket (220) is also provided with a second crossbar (222), which is fixedly connected to the side of the connecting block (400).

9. The automotive hood topcoat coating support fixture according to claim 6, characterized in that, A support rod (500) is provided on the side of the base plate (214) away from the frame (212), and the support rod (500) is fixedly connected to the connecting block (400).

10. A support fixture for painting the topcoat of an automotive hood according to any one of claims 6-9, characterized in that, The support handle (100) is T-shaped. The body of the support handle (100) includes a straight section (110) and a curved section (120). One end of the straight section (110) is fixedly connected to the connecting block (400), and the other end is fixedly connected to the curved section (120). The acute angle between the straight section (110) and the curved section (120) is in the range of 30° to 40°.

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