A fixture for painting automotive bumper assemblies

Abstract

This utility model relates to the field of auxiliary tools for automotive parts processing, and in particular to a fixture for painting automotive bumper assemblies. It addresses the shortcomings of existing technologies and includes a fixed structure, a lifting platform, a support structure, and a limiting structure. The lifting platform moves vertically above the fixed structure. Multiple sets of support structures are provided on the lifting platform. A spherical adjusting element is elastically provided at the top of each support structure. Limiting structures are also provided at both ends of the top surface of the lifting platform. Arc-shaped adjusting elements are elastically provided on both sides of each limiting structure. Compared with existing technologies, this utility model effectively improves the adaptability of the fixture to different workpieces.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary tools for automotive parts processing, specifically a fixture for painting automotive bumper assemblies. Background Technology

[0002] The bumper assembly is a crucial exterior covering and safety component of a vehicle. It not only relates to the vehicle's passive safety performance but also directly affects the overall aesthetic appearance. Therefore, the painting of the bumper assembly is a critical process in automobile manufacturing, as its quality directly determines the final appearance, corrosion resistance, and market competitiveness of the product.

[0003] On existing painting production lines, bumper assemblies typically require specialized fixtures for fixation and are then transported through a series of processes including pretreatment, electrophoresis (if the substrate is metal), spraying, and baking. Currently, most common fixtures employ simple frame or fixed-point support structures, which have revealed numerous problems in practical applications.

[0004] Chinese patent CN214637918U discloses a universal bumper painting fixture. This fixture, through a height-adjustable main support and sub-support sections combined with a snap-fit ​​assembly, achieves rapid adjustment, aiming to solve the problem of universality for bumper painting fixtures across multiple vehicle models. Although this solution offers a certain degree of flexibility and ease of adjustment, the following problems still exist:

[0005] 1. The multi-hole locking pin adjustment has a simple structure, but the operation is not quick enough, especially when frequently changing models.

[0006] 2. Although the support head can be hinged, it lacks the ability to adapt to the curved shape of the bumper, making it difficult to ensure that all support points are evenly stressed. This may cause the workpiece to shake or deform during the painting process. In addition, the contact points between the anti-rotation part and the workpiece are relatively sharp structures, which can easily cause damage to the workpiece.

[0007] Therefore, we propose a fixture for painting automotive bumper assemblies to address the aforementioned problems. Utility Model Content

[0008] The purpose of this invention is to provide a fixture for painting automotive bumper assemblies, in order to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A fixture for painting automotive bumper assemblies includes a fixed structure, a lifting platform, a support structure, and a limiting structure. The lifting platform moves vertically above the fixed structure. Multiple sets of support structures are provided on the lifting platform. A spherical adjusting member is elastically provided on the top of the support structure. Limiting structures are also provided at both ends of the top surface of the lifting platform. An arc-shaped adjusting member is elastically provided on both sides of the limiting structure.

[0011] According to the above technical solution, the fixed structure includes a base and a lifting assembly. A PLC controller is provided on the base, and two lifting assemblies are provided and symmetrically installed on the base. The lifting platform is installed between the tops of the two lifting assemblies.

[0012] According to the above technical solution, the support structure includes a fixed cylinder and a connecting plate. The fixed cylinder passes through the lifting platform and slides in contact with it. The bottom wall of the fixed cylinder is fixedly installed with the connecting plate. An electric cylinder is installed on the bottom wall of the lifting platform, and the end of the output shaft of the electric cylinder is fixed with the connecting plate.

[0013] According to the above technical solution, the support structure also includes a lifting plate, which is slidably disposed between the inner walls of the fixed cylinder, and a spring is also provided between the bottom wall of the lifting plate and the inner wall of the fixed cylinder. A connecting shaft is also fixed on the top surface of the lifting plate, and an adjusting component is installed on the end of the connecting shaft.

[0014] According to the above technical solution, the limiting structure includes a fixed box, a rack and a gear. The fixed box is installed at the end of the lifting platform. A through cavity is opened inside the fixed box. The gear is rotatably positioned in the middle of the cavity. There are two racks, which are respectively meshed on both sides of the gear.

[0015] According to the above technical solution, a sliding plate is connected to one end of the rack, and the sliding plate slides and adjusts along the inner wall of the cavity. A cylinder is provided on the other side wall of the sliding plate, and a piston shaft is elastically provided on one end of the cylinder. The adjusting member is connected and fixed to the other end of the piston shaft.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] By setting up lifting components, support structures, and limiting structures, the overall height of the equipment and the height of individual support structures can be adjusted using the lifting components and support structures, making it suitable for supporting and assisting workpieces of more specifications and models. At the same time, the limiting structure can better adjust and position the workpiece. Furthermore, spherical and arc-shaped structures are respectively set on the parts of the support structure and limiting structure that contact the workpiece, so as to better adjust the contact state and contact pressure. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a longitudinal sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of the fixing box of this utility model.

[0021] In the diagram: 1. Base; 2. Support column; 21. Screw; 22. Limiting component; 3. Lifting platform; 31. Lifting column; 4. Fixed cylinder; 41. Lifting plate; 42. Adjusting component one; 43. Connecting plate; 44. Electric cylinder; 5. Fixed box; 51. Rack; 511. Slide plate; 52. Gear; 53. Shaft cylinder; 531. Piston shaft; 54. Adjusting component two. Detailed Implementation

[0022] 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 protection scope of the present utility model.

[0023] Please see Figure 1-3 The present invention provides the following technical solution:

[0024] A fixture for painting automotive bumper assemblies includes a fixed structure, a lifting platform 3, a support structure, and a limiting structure. The lifting platform 3 moves vertically above the fixed structure. Multiple sets of support structures are provided on the lifting platform 3. A spherical adjusting member 42 is elastically provided on the top of the support structure. Limiting structures are also provided at both ends of the top surface of the lifting platform 3. An arc-shaped adjusting member 54 is elastically provided on both sides of the limiting structure.

[0025] The fixed structure includes a base 1 and a lifting assembly. A PLC controller is fixedly installed on the base 1. Two lifting assemblies are provided and symmetrically installed on the base 1. The lifting platform 3 is installed between the tops of the two lifting assemblies.

[0026] The lifting assembly includes a support column 2 and a lifting column 31. The top of the lifting column 31 is connected and fixed to the bottom wall of the lifting platform 3, and the lifting column 31 also has an internal threaded groove. The bottom of the support column 2 is fixedly installed on the base 1. A "U"-shaped limiting member 22 is fixedly installed on the inner wall of the support column 2 near the bottom. A rotary motor is fixedly installed in the middle below the height of the limiting member 22. A screw 21 is installed on the output end of the rotary motor. The top of the screw 21 is located in the internal threaded groove, and the lifting column 31 and the screw 21 are connected by a threaded transmission. The bottom of the lifting column 31 always slides between the inner walls of the support column 2.

[0027] It should be further explained that by starting the rotary motor, the screw 21 is driven to rotate. As the screw 21 is driven, the lifting column 31 begins to move and adjust along the vertical direction of the support column 2. Thus, under the action of the synchronous movement of the lifting columns 31 on both sides, the lifting platform 3 is driven to adjust its height. After adjusting to the appropriate height, the rotary motor can be stopped.

[0028] The support structure includes a fixed cylinder 4, a connecting plate 43, and a lifting plate 41. The lifting platform 3 has multiple fixing holes. The fixed cylinder 4 passes through the fixing holes and slides between the inner walls of the fixing holes. The bottom wall of the fixed cylinder 4 is fixedly set with the connecting plate 43. Electric cylinders 44 are installed on the bottom wall of the lifting platform 3 on both sides of the fixing holes. The output shaft end of the electric cylinder 44 is fixed with the connecting plate 43.

[0029] A fixing groove is provided inside the fixing cylinder 4 near the top. The lifting plate 41 is slidably disposed between the inner walls of the fixing groove. A spring is also fixedly connected between the bottom wall of the lifting plate 41 and the bottom wall of the fixing groove. A connecting shaft is also fixedly installed on the top surface of the lifting plate 41. An adjusting component 42 is installed on the end of the connecting shaft.

[0030] It should be further explained that after the height of the lifting platform 3 is adjusted, its support height is adjusted again according to the position of different support structures. During adjustment, the electric cylinder 44 is activated, which drives the connecting plate 43 to rise and fall, thereby driving the fixed cylinder 4 on the connecting plate 43 to rise and fall synchronously. After adjusting to a suitable height, it stops. When adjusting to the final state, the adjusting part 42 is squeezed and adjusted under the height limit and the action of the spring in the fixed groove to adapt to the final stop state.

[0031] The limiting structure includes a fixed box 5, a rack 51, and a gear 52. The fixed box 5 is fixedly installed at the end of the lifting platform 3. A through cavity is opened inside the fixed box 5. The gear 52 is rotatably positioned in the middle of the cavity (the gear 52 is driven by a motor, which is installed between the inner walls of the lifting platform 3, not shown in the figure). There are two racks 51, which are respectively meshed on both sides of the gear 52. A dovetail-shaped guide bar is fixedly connected to the side wall of the rack 51 facing the cavity. Dovetail-shaped guide grooves are opened on both sides of the inner wall of the cavity. The guide bar always slides between the inner walls of the guide grooves.

[0032] A slide plate 511 is fixedly connected to one end of the rack 51. The slide plate 511 slides and adjusts along the inner wall of the cavity. A cylinder 53 is provided on the other side wall of the slide plate 511. A piston shaft 531 is elastically provided on one end of the cylinder 53. The adjusting member 54 is connected and fixed to the other end of the piston shaft 531.

[0033] It should be further explained that by controlling the rotation of gear 52, the racks 51 on both sides move accordingly, thereby causing the sliding plates 511 on both sides to slide towards or away from each other between the inner walls of the cavity. This, in turn, causes the adjusting parts 54 on both sides to move closer to and contact the workpiece until the gear 52 stops rotating. At this time, the adjusting parts 54 on both sides are pressed against the workpiece under the action of elastic adjustment, thereby clamping its ends. With the help of the support structure, the clamping and fixing effect of the workpiece is achieved.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fixture for painting automotive bumper assemblies, comprising a fixing structure, a lifting platform (3), a supporting structure, and a limiting structure, characterized in that, The lifting platform (3) moves vertically above the fixed structure. Multiple sets of support structures are provided on the lifting platform (3). The top of the support structure is elastically provided with a spherical adjustment component (42). Furthermore, a limit structure is provided at both ends of the top surface of the lifting platform (3). Both sides of the limit structure are elastically provided with an arc-shaped adjustment component (54).

2. The fixture for painting automotive bumper assemblies according to claim 1, characterized in that, The fixed structure includes a base (1) and a lifting assembly. A PLC controller is provided on the base (1). Two lifting assemblies are provided and symmetrically installed on the base (1). The lifting platform (3) is installed between the tops of the two lifting assemblies.

3. The fixture for painting automotive bumper assemblies according to claim 1, characterized in that, The support structure includes a fixed cylinder (4) and a connecting plate (43). The fixed cylinder (4) passes through the lifting platform (3) and slides in contact with it. The bottom wall of the fixed cylinder (4) is fixedly set with the connecting plate (43). An electric cylinder (44) is installed on the bottom wall of the lifting platform (3). The end of the output shaft of the electric cylinder (44) is fixed with the connecting plate (43).

4. A fixture for painting automotive bumper assemblies according to claim 3, characterized in that, The support structure also includes a lifting plate (41), which is slidably disposed between the inner walls of the fixed cylinder (4). A spring is also provided between the bottom wall of the lifting plate (41) and the inner wall of the fixed cylinder (4). A connecting shaft is also fixed on the top surface of the lifting plate (41), and an adjusting component (42) is installed on the end of the connecting shaft.

5. A fixture for painting automotive bumper assemblies according to claim 1, characterized in that, The limiting structure includes a fixed box (5), a rack (51) and a gear (52). The fixed box (5) is installed at the end of the lifting platform (3). A through cavity is provided inside the fixed box (5). The gear (52) is rotatably positioned in the middle of the cavity. There are two racks (51) that mesh with the two sides of the gear (52).

6. A fixture for painting automotive bumper assemblies according to claim 5, characterized in that, A slide plate (511) is connected to one end of the rack (51). The slide plate (511) slides and adjusts along the inner wall of the cavity. A cylinder (53) is provided on the other side wall of the slide plate (511). A piston shaft (531) is elastically provided on one end of the cylinder (53). The second adjusting member (54) is connected and fixed to the other end of the piston shaft (531).

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