Automobile bumper paint spraying pretreatment device and treatment process thereof

Abstract

The invention provides an automobile bumper paint spraying pretreatment device and a treatment process thereof.The automobile bumper paint spraying pretreatment device comprises a base, supporting legs are fixedly installed at the four corners of the top of the base, and a treatment box is fixedly connected to the tops of the supporting legs. The clamping mechanism is of a telescopic rod structure, a sleeve and a supporting rod can slide relative to each other, through linkage of a hinge base, a telescopic rod, a hinge frame and a connecting rod, the inclination angle of a clamping module can be flexibly adjusted, bumper edges with different radians can be accurately matched, after angle adjustment is completed, a limiting screw rod is inserted into a limiting hole, stable locking can be achieved, and in the clamping process, the clamping module is not prone to falling off. The adjusting handle is rotated to drive the second lead screw, the sliding block drives the clamping plate to be attached to the bumper through the reverse thread, the hinge ball can be finely adjusted along with the cambered surface, the stability is enhanced through cooperation with the anti-skid protrusions, meanwhile, the telescopic spring can buffer the clamping force, the fulcrum shaft guides the clamping plate to be positioned, stable clamping is achieved, and the bumper is prevented from being damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile bumper treatment, and particularly relates to a pretreatment device for automobile bumper painting and its treatment process. Background Art

[0002] In the field of the automobile industry, the pretreatment device for automobile bumper painting is crucial for ensuring the surface quality of the bumper. With the gradual transformation of the materials of the front and rear bumpers of automobiles from metal materials such as steel plates with a thickness of more than 3 mm stamped and chrome-plated to plastic materials that pursue harmony and unity with the body shape and lightweight, the requirements for its pretreatment device for painting are also increasing day by day. In the prior art, taking the pretreatment device for painting to improve the surface quality of automobile bumpers disclosed in the Chinese patent with the publication number of "CN214599947U" as an example, although it has certain advantages, many defects and deficiencies that need to be solved urgently are exposed in practical applications; During the use of this device, there are inherent deficiencies in the overall positioning structure. It mainly relies on the limit card for clamping and positioning. This single positioning method is unable to cope when facing automobile bumpers with irregular shapes. At present, most of the outer ends of automobile bumpers on the market are designed with irregular arc shapes, and the first limit card and the second limit card of this device do not have adjustment functions and cannot adapt to the arc changes of different bumpers. In actual operation, when bumpers of different models and specifications need to be processed, the limit card either cannot fit tightly with the bumper, resulting in the bumper being loosely fixed on the device and prone to shaking and displacement; or during the forced clamping process, it may cause indentations, scratches and other damages to the surface of the bumper, affecting the appearance quality of the bumper and the subsequent painting effect; From the perspective of positioning stability, it is difficult for this device to accurately and stably clamp both ends of the automobile bumper. During the pretreatment processes such as cleaning and spraying modified coatings, the stable fixation of the bumper is the basis for ensuring uniform and consistent treatment effects. Since the limit card cannot effectively fit the irregular arc surface of the bumper, during the operation of the device, the bumper will shift due to uneven force, resulting in the cleaning liquid being unable to cover the surface evenly and the sprayed modified coating being uneven in thickness, thereby affecting the protection performance and aesthetics of the bumper surface. Moreover, the instability of the bumper may also cause collisions between the pretreatment equipment and the bumper, damaging the equipment or the bumper and increasing the maintenance cost and production loss; In addition, the positioning and clamping ability of this device has obvious limitations and cannot flexibly adapt to automotive bumpers of different specifications and radian. The automotive manufacturing industry has a rich variety of vehicle models, and there are significant differences in the size, shape, and radian of bumpers. However, the existing positioning structures lack adjustability and versatility. For some bumpers with a large radian and special dimensions, effective positioning and fixation are simply impossible. This means that during the production process, enterprises need to design and replace different pretreatment devices for different bumpers, increasing the equipment investment cost and production preparation time, reducing production efficiency, and making it difficult to meet the efficient and flexible production requirements of the modern automotive industry. Therefore, it is necessary to improve the design of the existing technology. Summary of the Invention

[0003] To solve the above problems, the present invention proposes a pretreatment device for automotive bumper painting and its treatment process to more precisely solve the above-mentioned problems.

[0004] The present invention is achieved through the following technical solutions: The present invention proposes a pretreatment device for automotive bumper painting, including a base. At the four corners of the top of the base, support legs are fixedly installed. The top of the support legs is fixedly connected to a treatment box. At the bottom of the treatment box, an adjustment mechanism is fixedly installed. On both sides of the top of the adjustment mechanism, clamping mechanisms are fixedly connected. At the upper end of the back surface of the treatment box, an installation mechanism is fixedly installed; The clamping mechanism includes support rods. The support rods are fixedly installed on both sides of the top of the adjustment mechanism. At the top of the support rods, top discs are fixedly installed. Angle adjustment components are installed inside the top discs. On the outside of one top disc, a first motor is fixedly installed. The output end of the first motor is fixedly connected to the outside of the angle adjustment component. The inner side of the angle adjustment component is fixedly connected to a clamping module.

[0005] Further, the adjustment mechanism includes guide rails. The guide rails are fixedly connected to the middle of the bottom of the treatment box. Inside the guide rails, a first lead screw is rotatably connected. The thread directions of the two ends of the first lead screw are opposite. Both ends of the first lead screw are threadedly connected with sliding blocks. The top of the sliding blocks is connected to the bottom of the support rods. On one side of the guide rails, a base frame is fixedly connected. On the outside of the base frame, a second motor is fixedly installed. The output end of the second motor is connected to the end of the first lead screw.

[0006] Further, the angle adjustment component includes a fixed disc. The fixed disc is rotatably connected to the inside of the top disc. Inside the fixed disc, a hinge seat is fixedly installed. At the bottom of the fixed disc, a hinge frame is fixedly connected. Inside the hinge seat, a connecting rod is hinged. On the hinge frame, a telescopic rod is hinged. The end of the telescopic rod is connected to the bottom of the connecting rod. The clamping module is fixedly installed at the inner end of the connecting rod.

[0007] Furthermore, the telescopic rod includes a hinge member, the hinge member is fixedly connected to one side of the bottom of the connecting rod close to the clamping module, the bottom of the hinge member is hinged to a support rod, the outer surface of the support rod is slidably connected to a sleeve, the bottom of the sleeve is hinged to the inside of the hinge frame, the upper end of the outer side of the sleeve is threadedly connected to a limit screw, the end of the limit screw penetrates through the sleeve, and a plurality of limit holes are arranged at equal intervals and linearly on the outer side of the support rod, and the end of the limit screw is inserted into the inside of the limit hole.

[0008] Furthermore, the clamping module includes side rails, the side rails are fixedly connected to the inner ends of the connecting rods, the side rails and the connecting rods are perpendicular to each other, a second lead screw is rotatably connected to the inside of the side rails, the thread directions of both ends of the second lead screw are also opposite, both ends of the second lead screw are threadedly connected to sliders, a clamping group is fixedly connected to the side of the slider away from the side rail, and the top of the second lead screw penetrates through the side rail and is fixedly connected to an adjustment handle.

[0009] Furthermore, the clamping group includes connecting arms, the connecting arms are fixedly connected to the side of the slider away from the side rail, clamping plates are fixedly connected to the ends of the connecting arms, telescopic springs are fixedly connected to the four corners of the inner sides of the clamping plates, clamping frames are fixedly connected to the ends of the telescopic springs, hinge balls are rotatably connected to the inner sides of the clamping frames, clamping plates are fixedly connected to the inner sides of the hinge balls, anti-slip bumps are fixedly connected at equal intervals on the inner sides of the clamping plates, support shafts are fixedly connected to the outer sides of the clamping plates, and the ends of the support shafts penetrate through the clamping plates.

[0010] Furthermore, the installation mechanism includes a rail frame, the rail frame is fixedly installed at the upper end of the back of the processing box, an adjustment component is movably connected to the inside of the rail frame, and an installation component is fixedly installed at the top of the adjustment component.

[0011] Furthermore, the adjustment component includes a movable block and a rack, the movable block is slidably connected to the inside of the rail frame, an installation arm is fixedly connected to the bottom of the movable block, a third motor is fixedly connected to the lower end of the installation arm, a gear is fixedly connected to the output end of the third motor, the rack is fixedly connected to the bottom of the rail frame, the gear and the rack are meshed and connected, and the installation component is fixedly installed at the top of the movable block.

[0012] Furthermore, the installation component includes an installation frame, a fixed frame is fixedly installed at the top of the installation frame, an installation ring is fixedly installed at the top of the fixed frame, an installation screw is threadedly connected to the middle of the side of the installation ring close to the fixed frame, the end of the installation screw penetrates through the installation ring, the installation screw is a hand-twist screw, and an anti-slip plate is fixedly connected to the end of the installation screw located at the installation ring.

[0013] An automobile bumper pre-treatment process before painting includes the following steps: Step 1: Adjust the angle of the clamping mechanism. According to the curvature of the car bumper, slide the adjustment sleeve and the support rod, and change the inclination angle of the clamping module through the linkage of the hinge seat, telescopic rod, hinge frame and connecting rod. After the angle is adjusted to the right position, twist the limit screw to insert the corresponding limit hole to fix the clamping module; Step 2: Clamp the bumper, place the edge of the car bumper between the two clamping plates, turn the adjustment handle to drive the second screw in the side rail to rotate, and use the reverse threads at both ends of the screw to drive the slider to slide so that the clamping plate fits the outer surface of the bumper; Step 3: Adjust the distance between the clamping mechanisms, start the second motor, drive the first screw to rotate in the guide rail, drive the two connected sliding blocks to slide synchronously, displace the clamping mechanisms on the sliding blocks, adjust the distance between the two clamping mechanisms, and adapt to the size of the bumper; Step 4: Install the treatment equipment, insert the paint spray gun or cleaning nozzle into the installation ring, twist the installation screw, drive the anti-skid plate to fit the outer surface of the equipment, and complete the quick positioning installation; Step 5: Drive the processing equipment to move, start the third motor, drive the gear to rotate, and drive the movable block to slide in the rail frame through meshing transmission with the rack, so that the mounting ring and the internal painting end or cleaning nozzle are displaced laterally to achieve linear movement adjustment; Step six: perform pre-processing operations, start the first motor, drive the fixed plate to rotate, drive the clamped bumper to rotate, and at the same time tilt the mounting ring toward the bumper to drive the paint spraying device or the cleaning nozzle to clean or paint the rotating bumper.

[0014] Beneficial effects of the present invention: 1. This equipment adopts a multi-angle flexible adjustment setting, which can adapt to bumpers with different curvatures: the clamping mechanism of this device adopts a telescopic rod structure, which is composed of a sleeve and a support rod. The two can slide against each other. Through the linkage between the hinge seat, the telescopic rod, the hinge frame and the connecting rod, the flexible adjustment of the inclination angle of the clamping module can be achieved. This adjustment method can be adjusted according to the curvature of different car bumpers, so that the clamping module can be accurately adapted to the edge of the bumper. After the angle is adjusted in place, the limit screw is inserted into the limit hole to firmly lock the clamping module. This design solves the problem that traditional devices are difficult to adapt to irregular curved bumpers, and provides a reliable positioning basis for subsequent pre-painting treatment; 2. The whole device has the functions of stable clamping and protection, which can ensure that the bumper is not damaged: After the bumper is placed, rotate the adjustment handle to drive the second lead screw to rotate. Utilizing the opposite thread directions at both ends of the lead screw, drive the slider to drive the clamping plate to fit the surface of the bumper. The articulated ball on the clamping bracket can adaptively fine-tune according to the arc surface change of the bumper. Cooperating with the anti-slip protrusions on the inner side of the clamping plate, it significantly improves the clamping stability. At the same time, the telescopic spring set in the device can play a buffering role during the clamping process, avoiding damage to the surface of the bumper due to excessive clamping force. The support shaft provides guidance for the clamping plate and the telescopic spring, ensuring the stable positioning of the clamping plate, effectively protecting the bumper while achieving stable clamping; 3. The device is provided with an adjustment mechanism, which can flexibly adjust the spacing and adapt to bumpers of different sizes: The adjustment mechanism cooperates with the clamping mechanism. By starting the second motor to drive the first lead screw to rotate in the guide rail, drive the two sliding blocks connected to it to slide synchronously, thereby realizing the reciprocating displacement of the clamping mechanism installed on the sliding blocks. This function can flexibly adjust the distance between the two clamping mechanisms according to specific requirements, enabling the device to adapt to bumpers of different sizes and models of cars, meeting the diverse positioning requirements for pre-painting treatment. In addition, after the paint gun or cleaning nozzle is inserted into the mounting ring, it can be quickly positioned and installed through the mounting screw and the anti-slip plate, facilitating subsequent operations; 4. During the application of the device, the design of using the mounting mechanism in cooperation with the clamping mechanism can perform efficient processing and improve the overall working efficiency: During the cleaning or painting operation, start the third motor to make the gear rotate. Through the meshing transmission with the rack, drive the movable block to slide in the rail frame, and then drive the mounting ring and the painting end or cleaning nozzle inside it to perform lateral displacement, realizing linear movement adjustment. The design that the mounting ring is inclined towards the bumper enables it to quickly complete the cleaning or painting treatment during the rotation of the bumper. The coordinated work of the adjustment mechanism and the clamping mechanism, from the precise positioning of the bumper to the flexible adjustment of the processing equipment, comprehensively improves the overall efficiency and practicality of the equipment for processing car bumpers, effectively meeting the production requirements. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the bottom structural schematic diagram of the present invention; Figure 3 is the top structural schematic diagram of the present invention; Figure 4 is the structural schematic diagram of the clamping mechanism of the present invention; Figure 5 is the side structural schematic diagram of the clamping mechanism of the present invention; Figure 6 is the structural schematic diagram of the clamping module of the present invention; Figure 7 of the present inventionFigure 2 Schematic enlarged structure diagram at position A; Figure 8 Schematic structure diagram of the installation component of the present invention.

[0016] In the figure: 1, base; 2, support leg; 3, adjustment mechanism; 31, guide rail; 32, first lead screw; 33, sliding block; 34, base frame; 35, second motor; 4, processing box; 5, clamping mechanism; 51, support rod; 52, top plate; 53, angle adjustment component; 531, fixed plate; 532, hinge seat; 533, hinge frame; 534, connecting rod; 535, telescopic rod; 5351, hinge member; 5352, support rod; 5353, sleeve; 5354, limit screw; 5355, limit hole; 54, first motor; 55, clamping module; 551, side rail; 552, second lead screw; 553, slider; 554, adjustment handle; 555, clamping group; 5551, connecting arm; 5552, clamping plate; 5553, telescopic spring; 5554, clamping frame; 5555, hinge ball; 5556, clamping plate; 5557, support shaft; 6, installation mechanism; 61, rail frame; 62, adjustment component; 621, movable block; 622, rack; 623, installation arm; 624, third motor; 625, gear; 63, installation component; 631, installation frame; 632, fixed frame; 633, installation ring; 634, installation screw; 635, anti-slip plate. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0018] An automobile bumper pre-painting treatment device includes a base 1. Support legs 2 are fixedly installed at the four corners of the top of the base 1. A processing box 4 is fixedly connected to the top of the support legs 2. An adjustment mechanism 3 is fixedly installed at the bottom of the processing box 4. Clamping mechanisms 5 are fixedly connected to both sides of the top of the adjustment mechanism 3. An installation mechanism 6 is fixedly installed at the upper end of the back surface of the processing box 4; The clamping mechanism 5 includes a support rod 51 which is fixedly installed on both sides of the top of the adjustment mechanism 3. A top plate 52 is fixedly installed at the top of the support rod 51. Angle adjustment components 53 are installed inside the top plate 52. A first motor 54 is fixedly installed on the outside of one top plate 52. The output end of the first motor 54 is fixedly connected to the outside of the angle adjustment component 53. The inside of the angle adjustment component 53 is fixedly connected to a clamping module 55. When the pre-treatment device for automobile bumpers operates, the base 1 supports the treatment box 4 through the support legs 2 to provide a stable foundation for the whole. The adjustment mechanism 3 is installed at the bottom of the treatment box 4. The second motor 35 can be started to drive the first lead screw 32 to rotate in the guide rail 31, driving the two sliding blocks 33 connected thereto to slide synchronously, so that the support rod 51 fixed on the sliding block 33 and the whole clamping mechanism 5 generate reciprocating displacement, thereby flexibly adjusting the distance between the two clamping mechanisms 5 to adapt to automobile bumpers of different sizes and models. In the clamping mechanism 5, the angle adjustment component 53 is installed inside the top plate 52. When bumpers with different arcs need to be processed, the first motor 54 is started, and its output end drives the outside of the angle adjustment component 53 to rotate, so that the angle adjustment component 53 drives the clamping module 55 to change the inclination angle; after the angle adjustment is in place, the angle adjustment component 53 can be fixed by using the limit structure. Then, the bumper is placed in the clamping module 55. By rotating the adjustment handle 554 to drive the lead screw inside the clamping module 55 to rotate, the slider 553 is driven to drive the clamping plate 5556 to fit the surface of the bumper, and the articulated ball 5555 makes adaptive fine adjustment, and cooperates with the anti-slip protrusions to achieve stable clamping; during the clamping process, the telescopic spring 5553 buffers and protects the bumper, and the installation mechanism 6 installed on the back of the treatment box 4 can be used to install equipment such as cleaning nozzles or spray guns. After the bumper is clamped and positioned, by correspondingly starting the movement of the installation mechanism 6, pre-treatment operations such as cleaning and painting the bumper are carried out.

[0019] Combined Figures 1 - 3As shown, the adjusting mechanism 3 includes a guide rail 31 fixedly connected to the middle of the bottom of the processing box 4. A first lead screw 32 is rotatably connected inside the guide rail 31. The thread directions at both ends of the first lead screw 32 are opposite. Both ends of the first lead screw 32 are threadedly connected with sliding blocks 33. The top of the sliding block 33 is connected to the bottom of the support rod 51. A base frame 34 is fixedly connected to one side of the guide rail 31. A second motor 35 is fixedly installed on the outside of the base frame 34. The output end of the second motor 35 is connected to the end of the first lead screw 32. The angle adjustment assembly 53 includes a fixed disk 531 rotatably connected to the inside of the top disk 52. An articulated seat 532 is fixedly installed inside the fixed disk 531. An articulated frame 533 is fixedly connected to the bottom of the fixed disk 531. A connecting rod 534 is articulated inside the articulated seat 532. An expansion link 535 is articulated on the articulated frame 533. The end of the expansion link 535 is connected to the bottom of the connecting rod 534. The clamping module 55 is fixedly installed at the inner end of the connecting rod 534. The expansion link 535 includes an articulated part 5351 fixedly connected to one side of the bottom of the connecting rod 534 close to the clamping module 55. A support rod 5352 is articulated at the bottom of the articulated part 5351. A sleeve 5353 is slidably connected to the outer surface of the support rod 5352. The bottom of the sleeve 5353 is articulated to the inside of the articulated frame 533. A limit screw 5354 is threadedly connected to the upper end of the outside of the sleeve 5353. The end of the limit screw 5354 penetrates through the sleeve 5353. A plurality of limit holes 5355 are linearly arranged at equal intervals on the outside of the support rod 5352. The end of the limit screw 5354 is inserted into the inside of the limit hole 5355.

[0020] In the technical solution of the embodiment of the present application, when the automotive bumper pre-painting treatment device is operating, the adjusting mechanism 3 and the angle-adjusting component 53 cooperate. In the adjusting mechanism 3, the second motor 35 is installed outside the base frame 34, and its output end is connected to the first lead screw 32 in the guide rail 31. When the second motor 35 is started, it drives the first lead screw 32 to rotate. Since the thread directions at both ends of the first lead screw 32 are opposite, it will drive the sliding blocks 33 at both ends to slide synchronously towards or away from each other in the guide rail 31. The support rods 51 connected to the tops of the sliding blocks 33 move accordingly, so as to flexibly adjust the distance between the two clamping mechanisms 5 to adapt to automotive bumpers of different sizes. Regarding the angle-adjusting component 53, the first motor 54 is installed outside the top plate 52, and its output end is connected to the fixed plate 531. Starting the first motor 54 can drive the fixed plate 531 to rotate inside the top plate 52, thereby changing the positions of the hinge seat 532 and the hinge frame 533, and then assisting in adjusting the rotation of the clamped automotive bumper. During use and adjustment, the connecting rod 534 hinged inside the hinge seat 532 and the telescopic rod 535 hinged on the hinge frame 533 are in linkage. Only by adjusting the telescopic sliding of the telescopic rod 535 and the relative sliding of the support rod 5352 and the sleeve 5353, the connecting rod 534 is prompted to rotate for angle adjustment. The length of the telescopic rod 535 is adjusted by the relative sliding of the sleeve 5353 and the support rod 5352. After the adjustment is in place, the limit screw 5354 is screwed into the sleeve 5353 and inserted into the limit hole 5355 at the corresponding position on the support rod 5352 to fix the telescopic rod 535. This series of operations enables the inclination angle of the clamping module 55 fixed at the inner end of the connecting rod 534 to be adjusted, accurately adapting to automotive bumpers with different arcs, providing a reliable positioning for the subsequent pre-painting treatment. Embodiment 2

[0021] Combined with Figures 4 - 6As shown in the figure, the clamping module 55 includes a side rail 551. The side rail 551 is fixedly connected to the inner end of the connecting rod 534. The side rail 551 and the connecting rod 534 are perpendicularly arranged. A second lead screw 552 is rotatably connected inside the side rail 551. The thread directions at both ends of the second lead screw 552 are also opposite. Sliders 553 are threadedly connected to both ends of the second lead screw 552. A clamping group 555 is fixedly connected to the side of the slider 553 away from the side rail 551. The top of the second lead screw 552 penetrates through the side rail 551 and is fixedly connected to an adjusting handle 554. The clamping group 555 includes a connecting arm 5551. The connecting arm 5551 is fixedly connected to the side of the slider 553 away from the side rail 551. A clamping plate 5552 is fixedly connected to the end of the connecting arm 5551. Telescopic springs 5553 are fixedly connected to the inner four corners of the clamping plate 5552. Clamping frames 5554 are fixedly connected to the ends of the telescopic springs 5553. Hinge balls 5555 are rotatably connected to the inner sides of the clamping frames 5554. A clamping plate 5556 is fixedly connected to the inner side of the hinge ball 5555. Anti-slip bumps are fixedly connected at equal intervals on the inner side of the clamping plate 5556. A support shaft 5557 is fixedly connected to the outer side of the clamping plate 5556. The end of the support shaft 5557 penetrates through the clamping plate 5552.

[0022] In the technical solution of the above embodiment of the present application, during the use of the device, when the clamping module 55 works, rotate the adjusting handle 554 to drive the rotation of the second lead screw 552 inside the side rail 551. Since the thread directions at both ends of the second lead screw 552 are opposite, the sliders 553 at both ends will be driven to slide synchronously towards or away from each other inside the side rail 551 during rotation. The slider 553 drives the connecting arm 5551 and the clamping plate 5552 fixed thereon to move synchronously. Place the car bumper between the two clamping plates 5552. The sliding of the slider 553 causes the clamping plate 5552 to approach the bumper until the clamping plate 5556 contacts the surface of the bumper. During the contact process, if there is a curved surface on the surface of the bumper, the hinge ball 5555 hinged inside the clamping plate 5556 can adaptively rotate and fine-tune to ensure that the clamping plate 5556 closely fits the curved surface of the bumper. At the same time, the anti-slip bumps on the inner side of the clamping plate 5556 increase the friction with the surface of the bumper and improve the clamping stability. During the clamping process, if the clamping force is too large, the telescopic spring 5553 between the clamping plate 5552 and the clamping frame 5554 will play a buffering role to prevent the clamping plate 5556 from damaging the surface of the bumper. The support shaft 5557 on the outer side of the clamping plate 5556 penetrates through the clamping plate 5552 to provide guidance for the expansion and contraction of the clamping plate 5556 and the telescopic spring 5553, ensuring that the clamping plate 5556 remains stable during the clamping process and realizing reliable positioning and clamping of the car bumper. Embodiment 3

[0023] Combined with Figures 1 - 3 and Figures 7 - 8As shown in the figure, the installation mechanism 6 includes a rail frame 61, which is fixedly installed at the upper end of the back surface of the processing box 4. An adjusting component 62 is movably connected inside the rail frame 61. A mounting component 63 is fixedly installed at the top of the adjusting component 62. The adjusting component 62 includes a movable block 621 and a rack 622. The movable block 621 is slidably connected inside the rail frame 61. A mounting arm 623 is fixedly connected to the bottom of the movable block 621. A third motor 624 is fixedly connected to the lower end of the mounting arm 623 at the bottom of the movable block 621. A gear 625 is fixedly connected to the output end of the third motor 624. The rack 622 is fixedly connected to the bottom of the rail frame 61. The gear 625 and the rack 622 are meshed and connected. The mounting component 63 is fixedly installed at the top of the movable block 621. The mounting component 63 includes a mounting frame 631. A fixing frame 632 is fixedly installed at the top of the mounting frame 631. A mounting ring 633 is fixedly installed at the top of the fixing frame 632. A mounting screw 634 is threadedly connected to the middle of one side of the mounting ring 633 close to the fixing frame 632. The end of the mounting screw 634 penetrates through the mounting ring 633. The mounting screw 634 is a hand-twist screw. An anti-slip plate 635 is fixedly connected to the end of the mounting screw 634 located inside the mounting ring 633.

[0024] In the technical solution of the above embodiment of the present application, during the application of the device, when the installation mechanism 6 operates, the third motor 624 is installed at the lower end of the mounting arm 623 at the bottom of the movable block 621, and the gear 625 connected to its output end meshes with the rack 622 fixed to the bottom of the rail frame 61. When the third motor 624 is started, the motor drives the gear 625 to rotate. Due to the meshing transmission between the gear 625 and the rack 622, the movable block 621 slides inside the rail frame 61 along the direction of the rack 622, thereby realizing the lateral displacement of the adjusting component 62. The mounting component 63 is fixed to the top of the movable block 621. The mounting ring 633 is used to install equipment such as a paint spray gun or a cleaning nozzle. After inserting the equipment into the mounting ring 633, by hand-twisting the mounting screw 634, the anti-slip plate 635 at the end of the mounting screw 634 gradually fits the outer surface of the equipment. As the mounting screw 634 is tightened, the anti-slip plate 635 applies pressure to the equipment, thereby firmly fixing the equipment inside the mounting ring 633. The equipment can be the paint spraying end of the paint spraying equipment or the cleaning end of the cleaning equipment, and can be specifically selected for installation according to the processing requirements. The adjusting component 62 and the mounting component 63 work together, and can flexibly adjust the position of the paint spray gun or the cleaning nozzle according to the pre-treatment requirements of the automobile bumper painting, so that during the rotation of the bumper, it can accurately align with the surface of the bumper for cleaning or painting operations, effectively improving the efficiency and accuracy of the pre-treatment work.

[0025] A pre-treatment process for painting an automobile bumper includes the following steps: Step 1: Adjust the angle of the clamping mechanism 5. According to the curvature of the car bumper, slide the adjusting sleeve 5353 and the support rod 5352. Through the linkage of the hinge seat 532, the telescopic rod 535, the hinge frame 533 and the connecting rod 534, change the inclination angle of the clamping module 55. After the angle adjustment is in place, twist the limit screw 5354 and insert it into the corresponding limit hole 5355 to fix the clamping module 55; Step 2: Clamp the bumper. Place the edge of the car bumper between the two clamping plates 5556. Rotate the adjusting handle 554 to drive the second lead screw 552 in the side rail 551 to rotate. Utilize the reverse threads at both ends of the lead screw to drive the slider 553 to slide, so that the clamping plates 5556 fit the outer surface of the bumper; Step 3: Adjust the distance between the clamping mechanisms 5. Start the second motor 35 to drive the first lead screw 32 to rotate in the guide rail 31, drive the two connected sliding blocks 33 to slide synchronously, displace the clamping mechanism 5 on the sliding block 33, and adjust the distance between the two clamping mechanisms 5 to fit the size of the bumper; Step 4: Install the processing equipment. Insert the paint spray gun or cleaning nozzle into the interior of the mounting ring 633. Twist the mounting screw 634 to drive the anti-slip plate 635 to fit the outer surface of the equipment to complete the quick positioning installation; Step 5: Drive the processing equipment to move. Start the third motor 624 to drive the gear 625 to rotate. Through the meshing transmission with the rack 622, drive the movable block 621 to slide in the rail frame 61, so that the mounting ring 633 and the internal paint spraying end or cleaning nozzle are displaced horizontally to achieve linear movement adjustment; Step 6: Perform the pre-treatment operation. Start the first motor 54 to drive the fixed disk 531 to rotate, drive the clamped bumper to rotate, and at the same time tilt the mounting ring 633 facing the bumper, and drive the paint spraying device or cleaning nozzle to clean or paint the rotating bumper.

[0026] The working principle and advantages of the present invention are as follows: The clamping mechanism 5 configured in this device has significant adjustment and positioning capabilities in practical applications. When facing car bumpers with different curvatures, it can be adjusted specifically according to their specific shapes. Specifically, the telescopic rod 535 is composed of a sleeve 5353 and a support rod 5352, and the two can slide relative to each other. This sliding connection method provides the basic condition for adjustment. During the adjustment process, the relative sliding of the sleeve 5353 and the support rod 5352 will drive the connecting rod 534 to rotate on the hinge seat 532. A linkage relationship is formed among the hinge seat 532, the telescopic rod 535, the hinge frame 533 and the connecting rod 534. Through this linkage, the inclination angle of the clamping module 55 can be flexibly changed; This adjustment of the inclination angle enables the clamping module 55 to accurately adapt to the edge parts of different automotive bumpers. After the angle is adjusted to the appropriate position, by twisting the limit screw 5354 to insert it into the limit hole 5355 at the corresponding position, the fixing of the sleeve 5353 and the support rod 5352 can be achieved, and then the clamping module 55 with the adjusted angle can be firmly locked; After the angle adjustment of the clamping module 55 is completed, the edge of the automotive bumper can be placed between the two clamping plates 5556. At this time, rotate the adjustment handle 554 to drive the second lead screw 552 inside the side rail 551 to rotate. Since the thread directions at both ends of the second lead screw 552 are opposite, during its rotation, it can synchronously drive the slider 553 to slide towards or away from each other inside the side rail 551. The sliding of the slider 553 will cause the clamping plates 5556 of the clamping group 555 to stably fit on the outer surface of the bumper; It should be noted that the articulated ball 5555 provided on the clamping bracket 5554 plays an important role during the clamping process. When the clamping plate 5556 fits to the arc surface of the bumper outer surface, the articulated ball 5555 can perform adaptive rotational fine-tuning according to the change of the arc surface, so as to ensure that the clamping plate 5556 can fit well with bumpers of different arc surfaces. The anti-slip protrusions provided on the inner side of the clamping plate 5556 increase the friction with the bumper surface and further improve the clamping stability; In addition, the telescopic spring 5553 provided in the device can assist in buffering and protecting. During the clamping process, the telescopic spring 5553 can play a buffering role, effectively avoiding damage to the outer surface of the bumper caused by excessive clamping force. The existence of the support shaft 5557 provides guidance for the telescopic movement of the clamping plate 5556 and the telescopic spring 5553, ensuring that the clamping plate 5556 remains stable during the clamping process and achieving reliable positioning; During the use process, start the first motor 54, which drives the fixed disk 531 to rotate, and then drives the clamped and positioned bumper to rotate together. This rotation function enables the outer surface of the bumper to be fully exposed, facilitating comprehensive cleaning or spraying treatment, and greatly improving the convenience of equipment use; In this device, the cooperation between the adjustment mechanism 3 and the clamping mechanism 5 can flexibly adapt to the clamping and positioning of different bumpers. During the actual use process, start the second motor 35. The motor operation drives the first lead screw 32 to rotate inside the guide rail 31. Since the first lead screw 32 is connected to the two sliding blocks 33, and due to the driving effect of the second motor 35, the two sliding blocks 33 can slide synchronously and mutually inside the guide rail 31. The sliding of the sliding blocks 33 will drive the clamping mechanism 5 installed on them to perform reciprocating displacement; In this way, the distance between the two clamping mechanisms 5 can be flexibly adjusted according to specific requirements, so that the device can adapt to automotive bumpers of different sizes and models, meeting the positioning requirements for pre-painting treatment. During the application of the device, a paint spray gun or a cleaning nozzle can be inserted into the interior of the mounting ring 633. Subsequently, by turning the mounting screw 634, the anti-slip plate 635 is driven to fit against the outer surface of the paint spray gun or the cleaning nozzle, thereby achieving rapid positioning and installation of these devices. During the cleaning or painting operation, the third motor 624 is started, and its driving gear 625 rotates. Since the gear 625 meshes with the rack 622, the rotation of the gear 625 drives the movable block 621 to slide within the rail frame 61. The sliding of the movable block 621 further drives the paint spraying end of the paint spraying device or the cleaning nozzle installed therein and the mounting ring 633 to perform a lateral displacement. Through this displacement adjustment, the linear movement of the paint spraying end of the paint spraying device or the cleaning nozzle can be achieved. In addition, the mounting ring 633 is arranged to be inclined towards the bumper. This design enables the rapid treatment of the rotating bumper during the cleaning or painting process. The coordinated operation of the adjustment mechanism 3 and the clamping mechanism 5 effectively improves the overall efficiency and practicality of the device in treating automotive bumpers.

[0027] During the application of the present invention, a preheating chamber, a cleaning chamber, and a flame treatment section can be designed to be connected in sequence. During application, a preheating furnace is arranged in the preheating chamber. The preheating furnace is intended to be designed with two hot-dip aluminum plates arranged oppositely and respectively installed on both sides of the transmission direction of the chain drive mechanism. A blower is also intended to be designed and arranged outside the preheating chamber. The air outlet of the blower is connected to the preheating furnace through a preheating pipeline, and a heating device for heating the air in the preheating pipeline is arranged on the preheating pipeline. A constant temperature system and the device for positioning and clamping are arranged in the cleaning chamber. The mounting mechanism 6 of the device is used for installing the cleaning nozzle. A liquid carbon dioxide storage tank and a pressurization system connected to the liquid carbon dioxide storage tank can be arranged in the cleaning chamber. The pressurization system is connected to the dry ice cleaning control cabinet. The pressurization system is connected with a spraying pipeline, and the spraying pipeline is a flexible hose. The spraying pipeline is communicated with the cleaning nozzle on the mounting mechanism 6 for assisting in cleaning. During use, the device can also be used on a painting device. By installing the paint spray gun on the mounting mechanism 6 and starting the clamping mechanism 5 to clamp and drive the clamped bumper to rotate, the entire bumper can be painted. During application, a cleaning nozzle is also provided on the installation mechanism 6. The cleaning nozzle is provided with 15 outlets, which are arranged in two rows. The temperature in the cleaning chamber is 45°C and the humidity is less than 50%. As an optimization, the chain drive mechanism is designed with two relatively arranged drive chains. Sprockets are installed at the ends of the drive chains. The sprockets at the opposite ends of the two drive chains are installed with the assistance of a rotating shaft body. The rotating shaft body is fixedly connected to the output shaft of the motor. The drive chains and sprockets are controlled by the motor. The flame treatment section is designed to be arranged on the installation mechanism 6 on one side of the chain drive mechanism. A flame torch is installed at the free end of the installation mechanism 6. The flame torch is connected to a gas storage tank through a gas pipeline. A valve is provided on the gas pipeline. A lighter is provided on the flame torch. The installation mechanism 6 is identical in structure to the installation mechanism 6. The flame torch is provided with a long strip-shaped flame outlet; A preheating furnace is provided in the preheating chamber, which can preheat the automobile bumper to avoid too low temperature of the automobile bumper. The temperature of the hot-dip aluminum plate of the preheating furnace is 45 degrees, which can make the automobile bumper at a suitable temperature. After the automobile bumper is preheated, it is transmitted to the cleaning chamber through the chain drive mechanism. The dry ice cleaning control cabinet controls the action of the pressurization system, so that the liquid carbon dioxide in the liquid carbon dioxide storage tank is ejected from the cleaning nozzle through the injection pipeline. Through the adjustment of the installation mechanism 6, the cleaning nozzle is made to face the surface of the automobile bumper for spraying. The liquid carbon dioxide is sprayed onto the surface of the automobile bumper at a certain speed, so that the pollutants such as sweat stains, oil stains, and dust on the surface of the automobile bumper are quickly cooled and hardened and removed, so as to achieve the effect of cleaning the surface of the automobile bumper. During the cleaning process, water washing is not required, and the drying and heating stage after water washing is omitted, which can better save energy and protect the environment, save water resources, and protect the environment. It is a green and environmentally friendly cleaning technology. When cleaning the surface of the automobile bumper, unmanned operation and automatic cleaning can be realized, and no waste water is generated, which meets the needs of social development. After the cleaning is completed, the automobile bumper is transmitted to the flame treatment section through the chain drive mechanism. The lighter is used to ignite, the valve is opened, natural gas is output from the gas pipeline, and a flame is ejected at the flame torch. The surface of the automobile bumper is burned by the flame, which can remove the dust and scratches on the surface of the bumper and better improve the surface quality of the automobile bumper; A constant temperature system is provided. The temperature in the cleaning chamber is 45°C and the humidity is less than 50%, which can prevent the liquid carbon dioxide from atomizing into fog in the cleaning chamber and better clean the surface of the automobile bumper; The cleaning nozzle is provided with 15 outlets, which are arranged in two rows, so as to better improve the cleaning efficiency of the surface of the car bumper, and at the same time avoid waste of liquid carbon dioxide. When liquid carbon dioxide impacts the surface of the car bumper at a certain speed, it will condense to form dry ice microcrystals, generating micro-explosions, which can better carry away the dust and stains on the surface of the car bumper. The flame torch is provided with a long strip-shaped fire outlet, which can continuously burn the surface of the car bumper to remove the scratches and burrs on the surface of the car bumper, making the surface of the car bumper more uniform, with better continuity and higher surface quality.

[0028] Certainly, the present invention can also have many other implementation manners. Based on this implementation manner, other implementation manners obtained by ordinary technicians in this field without any creative work all fall within the scope protected by the present invention.

Claims

1. An automobile bumper pre-treatment device before painting, characterized in that It includes a base (1), support legs (2) are fixedly installed at the four corners of the top of the base (1), a processing box (4) is fixedly connected to the top of the support legs (2), an adjusting mechanism (3) is fixedly installed at the bottom of the processing box (4), clamping mechanisms (5) are fixedly connected to both sides of the top of the adjusting mechanism (3), and an installation mechanism (6) is fixedly installed at the upper end of the back surface of the processing box (4); The clamping mechanism (5) includes support rods (51), the support rods (51) are fixedly installed on both sides of the top of the adjusting mechanism (3), a top plate (52) is fixedly installed at the top of the support rods (51), angle adjustment components (53) are installed inside the top plates (52), a first motor (54) is fixedly installed on the outside of one of the top plates (52), the output end of the first motor (54) is fixedly connected to the outside of the angle adjustment component (53), and a clamping module (55) is fixedly connected to the inside of the angle adjustment component (53).

2. The pretreatment device for automobile bumper painting according to claim 1, characterized in that, The adjusting mechanism (3) includes guide rails (31), the guide rails (31) are fixedly connected to the middle of the bottom of the processing box (4), a first lead screw (32) is rotatably connected inside the guide rails (31), the thread directions of the two ends of the first lead screw (32) are opposite, sliding blocks (33) are threadedly connected to both ends of the first lead screw (32), the top of the sliding blocks (33) is connected to the bottom of the support rods (51), a base frame (34) is fixedly connected to one side of the guide rails (31), a second motor (35) is fixedly installed on the outside of the base frame (34), and the output end of the second motor (35) is connected to the end of the first lead screw (32).

3. The pretreatment device for automobile bumper painting according to claim 2, characterized in that, The angle adjustment component (53) includes a fixed disk (531), the fixed disk (531) is rotatably connected inside the top plate (52), a hinge seat (532) is fixedly installed inside the fixed disk (531), a hinge frame (533) is fixedly connected to the bottom of the fixed disk (531), a connecting rod (534) is hinged inside the hinge seat (532), a telescopic rod (535) is hinged on the hinge frame (533), the end of the telescopic rod (535) is connected to the bottom of the connecting rod (534), and the clamping module (55) is fixedly installed at the inner end of the connecting rod (534).

4. The pretreatment device for automobile bumper painting according to claim 3, characterized in that, The telescopic rod (535) includes a hinge member (5351) fixedly connected to one side of the bottom of the connecting rod (534) close to the clamping module (55). A support rod (5352) is hinged to the bottom of the hinge member (5351). A sleeve (5353) is slidably connected to the outer surface of the support rod (5352). The bottom of the sleeve (5353) is hinged to the inside of the hinge frame (533). A limit screw (5354) is threadedly connected to the upper end of the outside of the sleeve (5353). The end of the limit screw (5354) penetrates the sleeve (5353). A plurality of limit holes (5355) are linearly arranged at equal intervals on the outside of the support rod (5352). The end of the limit screw (5354) is inserted into the inside of the limit hole (5355).

5. The pretreatment device for automobile bumper painting according to claim 4, characterized in that The clamping module (55) includes a side rail (551) fixedly connected to the inner end of the connecting rod (534). The side rail (551) and the connecting rod (534) are perpendicular to each other. A second lead screw (552) is rotatably connected to the inside of the side rail (551). The thread directions at both ends of the second lead screw (552) are also opposite. Sliders (553) are threadedly connected to both ends of the second lead screw (552). A clamping group (555) is fixedly connected to the side of the slider (553) away from the side rail (551). The top of the second lead screw (552) penetrates the side rail (551) and is fixedly connected to an adjustment handle (554).

6. The pretreatment device for automobile bumper painting according to claim 5, characterized in that, The clamping group (555) includes a connecting arm (5551) fixedly connected to the side of the slider (553) away from the side rail (551). A clamping plate (5552) is fixedly connected to the end of the connecting arm (5551). Telescopic springs (5553) are fixedly connected to the inner four corners of the clamping plate (5552). Clamping frames (5554) are fixedly connected to the ends of the telescopic springs (5553). Hinge balls (5555) are rotatably connected to the inside of the clamping frames (5554). A clamping plate (5556) is fixedly connected to the inside of the hinge ball (5555). Anti-slip bumps are fixedly connected at equal intervals on the inside of the clamping plate (5556). A support shaft (5557) is fixedly connected to the outside of the clamping plate (5556). The end of the support shaft (5557) penetrates the clamping plate (5552).

7. The pretreatment device for automobile bumper painting according to claim 1, characterized in that, The mounting mechanism (6) includes a rail frame (61) fixedly installed on the upper end of the back surface of the processing box (4). An adjustment component (62) is movably connected to the inside of the rail frame (61). A mounting component (63) is fixedly installed on the top of the adjustment component (62).

8. An automobile bumper pre-treatment device before painting according to claim 7, characterized in that, The adjusting component (62) includes a movable block (621) and a rack (622). The movable block (621) is slidably connected to the inside of the rail frame (61). A mounting arm (623) is fixedly connected to the bottom of the movable block (621). A third motor (624) is fixedly connected to the lower end of the mounting arm (623). A gear (625) is fixedly connected to the output end of the third motor (624). The rack (622) is fixedly connected to the bottom of the rail frame (61). The gear (625) and the rack (622) are meshed and connected. The mounting component (63) is fixedly installed on the top of the movable block (621).

9. The pretreatment device for automobile bumper painting according to claim 8, characterized in that, The mounting component (63) includes a mounting frame (631). A fixing frame (632) is fixedly installed on the top of the mounting frame (631). A mounting ring (633) is fixedly installed on the top of the fixing frame (632). A mounting screw (634) is threadedly connected to the middle of one side of the mounting ring (633) close to the fixing frame (632). The end of the mounting screw (634) penetrates through the mounting ring (633). The mounting screw (634) is set as a hand-tightening screw. An anti-slip plate (635) is fixedly connected to the end of the mounting screw (634) located in the mounting ring (633).

10. A pretreatment process for painting an automobile bumper, using the automobile bumper painting pretreatment device described in claims 1-9, characterized in that, It includes the following steps: Step 1: Adjust the angle of the clamping mechanism (5). According to the curvature of the automobile bumper, slide the adjusting sleeve (5353) and the support rod (5352). Through the linkage of the hinge seat (532), the telescopic rod (535), the hinge frame (533) and the connecting rod (534), change the inclination angle of the clamping module (55). After the angle adjustment is in place, twist the limit screw (5354) and insert it into the corresponding limit hole (5355) to fix the clamping module (55). Step 2: Clamp the bumper. Place the edge of the automobile bumper between the two clamping plates (5556). Rotate the adjusting handle (554) to drive the second lead screw (552) in the side rail (551) to rotate. Utilize the reverse threads at both ends of the lead screw to drive the slider (553) to slide, so that the clamping plates (5556) fit the outer surface of the bumper. Step 3: Adjust the distance between the clamping mechanisms (5). Start the second motor (35) to drive the first lead screw (32) to rotate in the guide rail (31), drive the two connected sliding blocks (33) to slide synchronously, displace the clamping mechanisms (5) on the sliding blocks (33), and adjust the distance between the two clamping mechanisms (5) to adapt to the size of the bumper. Step 4: Install the processing equipment. Insert the paint spray gun or the cleaning nozzle into the inside of the mounting ring (633), twist the mounting screw (634), drive the anti-slip plate (635) to fit the outer surface of the equipment, and complete the quick positioning installation. Step 5: Drive the processing equipment to move. Start the third motor (624) to drive the gear (625) to rotate. Through the meshing transmission with the rack (622), drive the movable block (621) to slide in the rail frame (61), and make the mounting ring (633) and the internal paint spraying end or the cleaning nozzle displace horizontally to achieve linear movement adjustment. Step 6: Perform pre-treatment operations. Start the first motor (54) to drive the fixed disk (531) to rotate, driving the clamped bumper to rotate. At the same time, tilt the mounting ring (633) towards the bumper, and drive the cleaning nozzle to perform a comprehensive cleaning treatment on the rotating bumper.

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