Automobile door lock spraying device and method

Abstract

The invention belongs to the technical field of automobile door lock spraying, and discloses an automobile door lock spraying device and method.The automobile door lock spraying device comprises a working box and a working frame, a spraying part is fixedly connected to the top of the working frame, centrifugal force is generated in the process that a rotating column drives a guide rail plate to rotate, and the centrifugal force enables a movable frame rod to slide on the inner wall of the guide rail plate; in the process that the movable frame rods gradually get away from the vertical rods, telescopic rods drive sleeve blocks to slide on the outer walls of the movable frame rods, the two sleeve blocks get close to each other, the sleeve blocks drive connecting plates and the vertical frame rods to move, and the two vertical frame rods drive two inclined strip clamping blocks to get close to each other; the top and the bottom of a workpiece can be clamped when the two inclined strip clamping blocks move, in the rotating and spraying process, the top and the bottom of the workpiece can be clamped through the effect of the inclined strip clamping blocks, and therefore it is guaranteed that the workpiece is kept stable in the spraying process. And the inclined surface of the inclined strip clamping block is in contact with the workpiece, so that the workpiece can be further prevented from falling off.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile door lock spraying, and in particular relates to an automobile door lock spraying device and method. Background Art

[0002] When spraying the front door lock of a car, the front door lock is generally clamped by a clamping frame and placed in front of the spray gun, and then the spray gun is controlled by a robot to spray. The clamping frame can be rotated so that different surfaces can be sprayed to complete the spraying.

[0003] The prior art document publication number is CN117019466B, which is a spraying device for a car front door lock. The present application discloses a spraying device for a car front door lock, comprising a support box, a motor arranged in the support box, a mounting plate arranged on the top of the support box and the upper side of the support box, a U-shaped plate arranged between the two mounting plates, and a spray gun arranged on the outside of the U-shaped plate; a reversing component, comprising a power component arranged on the motor, a clamping component arranged on the rotating component, a rotating component arranged on the clamping component, a switching component arranged on the clamping component, a guide component arranged on the clamping component, and a telescopic component arranged on the guide component; a flipping component, comprising a pushing component arranged on the mounting plate, a transfer component arranged on the pushing component, and a gear component arranged on the transfer component, which can replace the clamping position, so that the spraying is more comprehensive and the spraying effect is better.

[0004] Although the above application can solve the problem of incomplete spraying, in the process of clamping the workpiece, the workpiece is clamped by the U-shaped plate, and the U-shaped plate covers the position of the workpiece, and the spray material may not be sprayed in all directions, thereby affecting the spraying effect of the spray material. When a normal clamping plate is used to clamp the workpiece, the workpiece may be thrown by centrifugal force, causing the workpiece to fall off, affecting the spraying effect of the workpiece. Summary of the Invention

[0005] In order to solve the problem of workpiece falling off during rotation raised in the above background technology, the present invention provides a car door lock spraying device and method.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a car door lock spraying device, comprising a working box and a working frame, the top of the working frame is fixedly connected to a spraying part, and also comprises a rotary spraying mechanism, the rotary spraying mechanism comprises a motor fixedly connected to the bottom of the inner wall of the working box, the output end of the motor is fixedly connected to a rotating shaft, the top of the rotating shaft is fixedly connected to a rotating column, the rotating column is arranged outside the working box, and the outer wall of the rotating column is provided with an adjustment component for adjusting the position between the workpiece and the spraying part.

[0007] Preferably, the adjustment assembly includes a plurality of guide rail plates fixedly connected to the outer walls of the top and bottom ends of the rotating column, one end of the inner wall of the guide rail plate is fixedly connected to a tension spring, and one end of the tension spring is fixedly connected to the movable frame rod.

[0008] Preferably, the top and bottom ends of the movable frame rod are both slidably connected to the inner wall of the guide rail plate, the top and bottom ends of the movable frame rod are both fixedly connected to a bent rod, and a square box is fixedly connected between two adjacent bent rods.

[0009] Preferably, both sides of the square box are penetrated and slidably connected with elastic rack rods, one end of the elastic rack rod is fixedly connected with a clamping plate, and the clamping plate is arranged inside the square box.

[0010] Preferably, a clamping assembly is provided at the bottom end of the rotating column, and the clamping assembly includes four vertical rods fixedly connected to the top of the bottom end of the rotating column, the top and bottom of the middle end of the vertical rod are hinged with telescopic rods, one end of the telescopic rod is hinged with a sleeve block, the inner wall of the sleeve block is slidably connected to the outer wall of one end of the mobile frame rod, the side of the sleeve block away from the telescopic rod is fixedly connected to a connecting plate, and a vertical groove is provided on one side of the outer wall of the square box.

[0011] Preferably, the outer wall of one end of the connecting plate is slidably connected to the inner wall of the vertical groove, a limiting hole is provided at the top center of the connecting plate, the inner wall of the limiting hole is slidably connected to a vertical frame rod, the bottom of the vertical frame rod is fixedly connected to an oblique bar clamping block, both sides of the bottom of the connecting plate are fixedly connected to elastic extrusion plates, the bottom of the elastic extrusion plate contacts the top of the oblique bar clamping block, and the two ends of the connecting plate close to the elastic extrusion plate are hinged with rotating bars.

[0012] Preferably, one end of the rotating bar is hinged at the outer wall of the oblique bar clamping block, and both sides of the sleeve block are fixedly connected to square plates, the outer wall of the square plate is fixedly connected to a piston rod, and the outer wall of one end of the piston rod is slidably connected to a cylinder, and the top and bottom of the outer wall of the cylinder are connected to circular tubes, one end of the circular tube is connected to a suction cup, and one end of the suction cup passes through and extends to the interior of the square box.

[0013] Preferably, a drying assembly is provided on the top of the working box, and the drying assembly includes an annular shell fixedly connected to the top of the working box, an annular plate is slidably connected to the top of the inner wall of the annular shell, a conical block is fixedly connected to the top of the annular plate, and the top of the conical block passes through the annular shell and extends to the outside of the annular shell.

[0014] Preferably, four extrusion springs are fixedly connected to the bottom of the annular plate, the bottom of the extrusion spring is fixedly connected to the bottom of the inner wall of the annular shell, the bottom of the annular plate is fixedly connected to a heater, and four exhaust parts are connected to the outer wall of the bottom end of the annular shell.

[0015] A method for using a car door lock spraying device; S1. Place the workpiece between the two clamping plates and start the motor. The motor drives the rotating shaft and the rotating column to rotate. The rotating column drives the clamping plate in the adjustment assembly to rotate. The clamping plate drives the workpiece to rotate. At the same time, the spraying part is started to spray the rotating multiple workpieces. S2. When the rotating column drives the guide plate to rotate, the centrifugal force causes the movable frame rod to slide on the inner wall of the guide plate. When the movable frame rod and the vertical rod gradually move away from each other, the telescopic rod drives the sleeve block to slide on the outer wall of the movable frame rod. The two sleeve blocks approach each other, and the sleeve block drives the connecting plate and the vertical frame rod to move. The two vertical frame rods drive the two oblique bar clamps to approach each other. When the two oblique bar clamps move, they can clamp the top and bottom of the workpiece; S3. When the oblique bar clamping block clamps the workpiece, it is subjected to the reaction force of the workpiece, causing the oblique bar clamping block to drive the vertical frame rod to slide on the inner wall of the limit hole at the connecting plate. At this time, the top of the oblique bar clamping block and the bottom of the connecting plate gradually approach each other, causing the rotating bar to drive the oblique bar clamping block and the vertical frame rod to slide on the inner wall of the limit hole, and the oblique bar clamping block gradually moves toward the inside of the square box.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an adjustment assembly and a clamping assembly, wherein a workpiece is placed between two clamping plates for initial clamping. The motor is then activated, which drives the rotating shaft and the rotating column to rotate. The rotating column then drives the clamping plate in the adjustment assembly to rotate, which in turn drives the workpiece to rotate. Simultaneously, a spraying member is activated, and the rotating workpieces are sprayed by the spraying member. The rotating column drives the guide plate to rotate, generating centrifugal force. The centrifugal force causes the movable frame rod to slide along the inner wall of the guide plate. As the movable frame rod and the vertical rod gradually move away from each other, the telescopic rod drives the sleeve block to slide along the outer wall of the movable frame rod. The two sleeve blocks move toward each other, the sleeve block drives the connecting plate and the vertical frame rod to move, and the two vertical frame rods drive the two oblique bar clamps toward each other. As the two oblique bar clamps move, they can clamp the top and bottom of the workpiece. During the rotation and spraying process, if the workpiece is not firmly clamped, it may fall or deviate, affecting the spraying quality. The oblique bar clamps can clamp the top and bottom of the workpiece, thereby ensuring that the workpiece remains stable during the spraying process. Furthermore, the contact between the inclined surface of the bevel bar clamping block and the workpiece can further prevent the workpiece from falling off.

[0017] The present invention sets a clamping assembly, and when the centrifugal force is greater, the clamping effect of the bevel bar clamp on the workpiece is better. At this time, when the bevel bar clamp clamps the workpiece, it is subjected to the reaction force of the workpiece, so that the bevel bar clamp drives the vertical frame rod to slide on the inner wall of the limiting hole at the connecting plate. At this time, the top of the bevel bar clamp block and the bottom of the connecting plate gradually approach each other, so that the rotating bar drives the bevel bar clamp block and the vertical frame rod to slide on the inner wall of the limiting hole, and the bevel bar clamp block gradually moves toward the inside of the square box. During this process, the protruding inclined surface of the bevel bar clamp block will not block the spraying surface of the workpiece, avoiding the local uneven spraying in the traditional spraying process, and allowing the surface of the workpiece to be sprayed in all directions. As the bevel clamp moves toward the interior of the box, it exerts a slight squeezing force on the workpiece, causing it to fit tightly against the inner wall of the box. The two sleeves then approach each other, driving the square plate to move. This in turn drives the piston rod to slide within the cylinder, creating negative pressure within the rod-carrying area. This negative pressure enters the suction cup through the tube, firmly holding the workpiece in place. This further prevents the workpiece from falling off when centrifugal force is excessive, improving spraying stability.

[0018] The present invention provides a coordinated arrangement of an adjustment component, a clamping component, and a drying component. When the centrifugal force gradually increases, the movable frame rod gradually slides on the inner wall of the guide rail plate, the movable frame rod drives the square box in the adjustment component to move, and the square box drives the workpiece to move, so that the workpiece gradually approaches the spraying component, reducing the distance the spray material flies. The flight distance of the paint from the spraying equipment to the workpiece surface is shortened, which can effectively reduce the diffusion of the paint in the air, keep the paint sprayed on the workpiece surface, and ensure the adhesion of the paint to the workpiece surface. When the rotating column drives the guide rail plate to rotate, the guide rail plate will contact the side wall of the conical block during rotation, causing the conical block to be squeezed. The conical block drives the annular plate to slide down the inner wall of the annular shell. During the descending process of the annular plate, the heater heats the air flow inside the annular shell, causing the hot air flow inside the annular shell to enter the interior of the exhaust component. The hot air flow can dry the workpiece during rotation through the exhaust component, accelerating the drying process of the paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall top view of the structure of the present invention; Figure 2 This is a schematic cross-sectional view of the working box of the present invention; Figure 3 This is a schematic diagram of the side structure of the telescopic rod of the present invention; Figure 4 For the present invention Figure 3 A magnified view of middle A; Figure 5 This is a schematic diagram of the top view of the square plate structure of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the square box of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the cylinder of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of middle B; Figure 9 This is a schematic diagram of the cross-sectional structure of the annular shell of the present invention; Figure 10 This is a schematic diagram of the top view of the rotating column of the present invention.

[0020] Figure: 1, working box; 2, working frame; 3, spraying parts; 4, rotary spraying mechanism; 41, motor; 42, rotating shaft; 43, rotating column; 44, adjusting assembly; 45, clamping assembly; 46, drying assembly; 441, guide plate; 442, tension spring; 443, moving frame rod; 444, bending rod; 445, square box; 446, elastic frame rod; 447, clamping plate; 451, vertical rod; 452, telescopic rod; 453, sleeve Block; 454, connecting plate; 455, vertical groove; 456, limiting hole; 457, vertical frame rod; 458, oblique bar clamping block; 459, elastic extrusion plate; 4510, rotating bar; 4511, square plate; 4512, piston rod; 4513, cylinder; 4514, round tube; 4515, suction cup; 461, annular shell; 462, annular plate; 463, conical block; 464, extrusion spring; 465, heater; 466, exhaust part. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 10 As shown, the present invention provides a car door lock spraying device, comprising a working box 1 and a working frame 2, a spraying member 3 is fixedly connected to the top of the working frame 2, and further comprising; The rotary spraying mechanism 4 includes a motor 41 fixedly connected to the bottom of the inner wall of the working box 1, the output end of the motor 41 is fixedly connected to a rotating shaft 42, the top of the rotating shaft 42 is fixedly connected to a rotating column 43, the rotating column 43 is arranged on the outside of the working box 1, and the outer wall of the rotating column 43 is provided with an adjustment component 44 for adjusting the position between the workpiece and the spraying part 3.

[0023] The adjustment assembly 44 includes a plurality of guide rails 441 fixedly connected to the outer walls of the top and bottom ends of the rotating column 43. One end of the inner wall of the guide rail 441 is fixedly connected to a tension spring 442, and one end of the tension spring 442 is fixedly connected to a moving frame rod 443.

[0024] The top and bottom ends of the movable frame rod 443 are both slidably connected to the inner wall of the guide rail plate 441 , and one side of the top and bottom ends of the movable frame rod 443 are fixedly connected to a bent rod 444 , and a square box 445 is fixedly connected between two adjacent bent rods 444 .

[0025] With the above solution, as the centrifugal force gradually increases, the movable rod 443 slides on the inner wall of the guide plate 441, thereby driving the square box 445 in the adjustment assembly 44 to move. The square box 445 drives the workpiece to move, gradually bringing the workpiece closer to the spraying part 3, thereby reducing the distance the sprayed material flies.

[0026] Elastic rods 446 are passed through and slidably connected to both sides of the square box 445 , and one end of the elastic rods 446 is fixedly connected to a clamping plate 447 , which is arranged inside the square box 445 .

[0027] Using the above solution, the workpiece is placed between two clamping plates 447 for initial clamping. The motor 41 is activated, driving the rotating shaft 42 and the rotating column 43 to rotate. The rotating column 43 then drives the clamping plates 447 in the adjustment assembly 44 to rotate, which in turn drives the workpieces to rotate. Simultaneously, the spraying element 3 is activated, spraying the rotating workpieces.

[0028] like Figures 1 to 10 As shown, a clamping assembly 45 is provided at the bottom end of the rotating column 43, and the clamping assembly 45 includes four vertical rods 451 fixedly connected to the top of the bottom end of the rotating column 43, and the top and bottom of the middle end of the vertical rod 451 are hinged with a telescopic rod 452, and one end of the telescopic rod 452 is hinged with a sleeve block 453, and the inner wall of the sleeve block 453 is slidably connected to the outer wall of one end of the moving frame rod 443, and the side of the sleeve block 453 away from the telescopic rod 452 is fixedly connected to a connecting plate 454, and a vertical groove 455 is provided on one side of the outer wall of the square box 445.

[0029] The outer wall of one end of the connecting plate 454 is slidably connected to the inner wall of the vertical slot 455, and a limiting hole 456 is provided at the top center of the connecting plate 454. The inner wall of the limiting hole 456 is slidably connected to the vertical frame rod 457, and the bottom of the vertical frame rod 457 is fixedly connected to the oblique bar clamp 458. Both sides of the bottom of the connecting plate 454 are fixedly connected to elastic extrusion plates 459, and the bottom of the elastic extrusion plate 459 contacts the top of the oblique bar clamp 458. The two ends of the connecting plate 454 close to the elastic extrusion plate 459 are hinged with rotating bars 4510.

[0030] With this solution, as the rotating column 43 drives the guide plate 441 to rotate, centrifugal force causes the movable rod 443 to slide along the inner wall of the guide plate 441. As the movable rod 443 and the vertical rod 451 gradually move away from each other, the telescopic rod 452 drives the sleeve 453 to slide along the outer wall of the movable rod 443, gradually bringing the two sleeves 453 closer together. The sleeve 453 drives the connecting plate 454 to move along with the vertical rod 457, which in turn drives the two diagonal clamping blocks 458 closer together. As the two diagonal clamping blocks 458 move, they can clamp the top and bottom of the workpiece.

[0031] One end of the rotating bar 4510 is hinged to the outer wall of the oblique bar clamp 458, and both sides of the sleeve block 453 are fixedly connected to the square plate 4511. The outer wall of the square plate 4511 is fixedly connected to the piston rod 4512. The outer wall of one end of the piston rod 4512 is slidably connected to the cylinder 4513. The top and bottom of the outer wall of the cylinder 4513 are connected to the circular tube 4514. One end of the circular tube 4514 is connected to the suction cup 4515. One end of the suction cup 4515 passes through and extends to the interior of the square box 445.

[0032] With this solution, as beveled clamping block 458 moves toward the interior of box 445, it applies a slight compressive force to the workpiece, forcing it to adhere tightly to the inner wall of box 445. At this point, the two sleeves 453 gradually approach each other, driving the square plate 4511. This in turn drives the piston rod 4512 to slide within cylinder 4513, creating negative pressure within the rod-containing area of ​​cylinder 4513. This negative pressure enters suction cup 4515 through tube 4514, firmly holding the workpiece.

[0033] A drying assembly 46 is provided on the top of the working box 1. The drying assembly 46 includes an annular shell 461 fixedly connected to the top of the working box 1. An annular plate 462 is slidably connected to the top of the inner wall of the annular shell 461. A conical block 463 is fixedly connected to the top of the annular plate 462. The top of the conical block 463 penetrates the annular shell 461 and extends to the outside of the annular shell 461.

[0034] Four extrusion springs 464 are fixedly connected to the bottom of the annular plate 462, and the bottom of the extrusion spring 464 is fixedly connected to the bottom of the inner wall of the annular shell 461. The bottom of the annular plate 462 is fixedly connected to a heater 465, and four exhaust parts 466 are connected to the outer wall of the bottom end of the annular shell 461.

[0035] With this solution, when rotating column 43 rotates guide plate 441, it comes into contact with the sidewall of conical block 463, squeezing conical block 463. Conical block 463 then drives annular plate 462 to slide along the inner wall of annular housing 461. As annular plate 462 descends, heated air from heater 465 forces hot air from within annular housing 461 into exhaust 466. This hot air, passing through exhaust 466, dries the rotating workpiece.

[0036] The working principle and use process of the present invention: The workpiece is placed between the two clamping plates 447 so that the workpiece is initially clamped. The motor 41 is started. The motor 41 drives the rotating shaft 42 and the rotating column 43 to rotate. The rotating column 43 drives the clamping plate 447 in the adjustment component 44 to rotate. The clamping plate 447 drives the workpiece to rotate. At the same time, the spraying part 3 is started to spray the rotating multiple workpieces. In the process of the rotating column 43 driving the guide plate 441 to rotate, centrifugal force is generated. The centrifugal force causes the movable frame rod 443 to slide on the inner wall of the guide plate 441. As the mobile frame rod 443 and the vertical rod 451 gradually move away from each other, the telescopic rod 452 drives the sleeve block 453 to slide on the outer wall of the mobile frame rod 443, and the two sleeve blocks 453 approach each other. The sleeve block 453 drives the connecting plate 454 and the vertical frame rod 457 to move, and the two vertical frame rods 457 drive the two oblique bar clamps 458 to approach each other. When the two oblique bar clamps 458 move, they can clamp the top and bottom of the workpiece. During the rotation and spraying process, if the workpiece is not firmly clamped, it may fall or deviate, affecting the spraying quality. The oblique bar clamps 458 can clamp the top and bottom of the workpiece, thereby ensuring that the workpiece remains stable during the spraying process. The contact between the inclined surface of the oblique bar clamps 458 and the workpiece can further prevent the workpiece from falling off.

[0037] When the centrifugal force is greater, the clamping effect of the bevel bar clamp 458 on the workpiece is better. At this time, when the bevel bar clamp 458 clamps the workpiece, it is subjected to the reaction force of the workpiece, causing the bevel bar clamp 458 to drive the vertical frame rod 457 to slide on the inner wall of the limiting hole 456 at the connecting plate 454. At this time, the top of the bevel bar clamp 458 and the bottom of the connecting plate 454 gradually approach each other, causing the rotating bar 4510 to drive the bevel bar clamp 458 and the vertical frame rod 457 to slide on the inner wall of the limiting hole 456, and the bevel bar clamp 458 gradually moves toward the inside of the square box 445. During this process, the protruding inclined surface of the bevel bar clamp 458 will not block the spraying surface of the workpiece, avoiding the local uneven spraying that occurs in the traditional spraying process, and allowing the surface of the workpiece to be sprayed in all directions. As the bevel clamp 458 moves toward the interior of the box 445, it exerts a slight squeezing force on the workpiece, causing it to fit tightly against the inner wall of the box 445. At this point, the two sleeves 453 approach each other, causing the sleeve 453 to move the square plate 4511, which in turn drives the piston rod 4512 to slide within the cylinder 4513. This creates negative pressure within the rod-carrying area of ​​the cylinder 4513. This negative pressure enters the interior of the suction cup 4515 through the circular tube 4514, firmly holding the workpiece in place. This further prevents the workpiece from falling off when the centrifugal force is excessive, thereby improving spraying stability.

[0038] When the centrifugal force gradually increases, the movable rack rod 443 will gradually slide on the inner wall of the guide plate 441, and the movable rack rod 443 will drive the square box 445 in the adjustment component 44 to move, and the square box 445 will drive the workpiece to move, so that the workpiece gradually approaches the spraying part 3, reducing the flight distance of the spray material, shortening the flight distance of the paint from the spraying equipment to the workpiece surface, and effectively reducing the diffusion of the paint in the air, keeping the paint concentrated on the workpiece surface, and ensuring the adhesion of the paint coated on the workpiece surface. When the rotating column 43 drives the guide plate 441 to rotate, the guide plate 441 will come into contact with the side wall of the conical block 463 during the rotation, so that the conical block 463 is squeezed, and the conical block 463 drives the annular plate 462 to slide down the inner wall of the annular shell 461. During the descending process of the annular plate 462, the heater 465 heats up the air flow inside the annular shell 461, so that the hot air flow inside the annular shell 461 enters the exhaust part 466. The hot air flow can dry the workpiece during the rotation process through the exhaust part 466, thereby accelerating the drying process of the paint.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A car door lock spraying device, comprising a working box and a working frame, wherein a spraying member is fixedly connected to the top of the working frame, characterized in that: Also includes; A rotary spraying mechanism includes a motor fixedly connected to the bottom of the inner wall of the working box, the output end of the motor is fixedly connected to a rotating shaft, the top of the rotating shaft is fixedly connected to a rotating column, the rotating column is arranged outside the working box, and the outer wall of the rotating column is provided with an adjustment component for adjusting the position between the workpiece and the spraying part.

2. The automobile door lock spraying device according to claim 1, characterized in that: The adjustment assembly includes a plurality of guide rail plates fixedly connected to the outer wall of the top and bottom ends of the rotating column, one end of the inner wall of the guide rail plate is fixedly connected to a tension spring, and one end of the tension spring is fixedly connected to a movable frame rod.

3. The automobile door lock spraying device according to claim 2, characterized in that: The top and bottom ends of the movable frame rod are both slidably connected to the inner wall of the guide rail plate, the top and bottom ends of the movable frame rod are both fixedly connected with bent rods, and a square box is fixedly connected between two adjacent bent rods.

4. The automobile door lock spraying device according to claim 3, characterized in that: Both sides of the square box are penetrated and slidably connected with elastic racks, one end of the elastic rack is fixedly connected with a clamping plate, and the clamping plate is arranged inside the square box.

5. The automobile door lock spraying device according to claim 4, characterized in that: A clamping assembly is provided at the bottom end of the rotating column, and the clamping assembly includes four vertical rods fixedly connected to the top of the bottom end of the rotating column. The top and bottom of the middle end of the vertical rod are hinged with telescopic rods, and one end of the telescopic rod is hinged with a sleeve block. The inner wall of the sleeve block is slidably connected to the outer wall of one end of the mobile frame rod, and the side of the sleeve block away from the telescopic rod is fixedly connected to a connecting plate, and a vertical groove is provided on one side of the outer wall of the square box.

6. The automobile door lock spraying device according to claim 5, characterized in that: The outer wall of one end of the connecting plate is slidably connected to the inner wall of the vertical slot, and a limiting hole is provided at the top center of the connecting plate. The inner wall of the limiting hole is slidably connected to the vertical frame rod, and the bottom of the vertical frame rod is fixedly connected to the oblique bar clamping block. Both sides of the bottom of the connecting plate are fixedly connected to elastic extrusion plates, and the bottom of the elastic extrusion plate contacts the top of the oblique bar clamping block. The two ends of the connecting plate close to the elastic extrusion plate are hinged with rotating bars.

7. The automobile door lock spraying device according to claim 6, characterized in that: One end of the rotating bar is hinged at the outer wall of the oblique bar clamping block, and both sides of the sleeve block are fixedly connected to square plates, and the outer wall of the square plate is fixedly connected to a piston rod, and the outer wall of one end of the piston rod is slidably connected to a cylinder, and the top and bottom of the outer wall of the cylinder are connected to circular tubes, and one end of the circular tube is connected to a suction cup, and one end of the suction cup passes through and extends to the interior of the square box.

8. The automobile door lock spraying device according to claim 7, characterized in that: A drying assembly is provided on the top of the working box, and the drying assembly includes an annular shell fixedly connected to the top of the working box, an annular plate is slidably connected to the top of the inner wall of the annular shell, a conical block is fixedly connected to the top of the annular plate, and the top of the conical block passes through the annular shell and extends to the outside of the annular shell.

9. The automobile door lock spraying device according to claim 8, characterized in that: Four extrusion springs are fixedly connected to the bottom of the annular plate, the bottom of the extrusion spring is fixedly connected to the bottom of the inner wall of the annular shell, the bottom of the annular plate is fixedly connected to a heater, and four exhaust parts are connected to the outer wall of the bottom end of the annular shell.

10. A method for using a car door lock spraying device, using the car door lock spraying device according to claim 6, characterized in that: S1. Place the workpiece between the two clamping plates and start the motor. The motor drives the rotating shaft and the rotating column to rotate. The rotating column drives the clamping plate in the adjustment assembly to rotate. The clamping plate drives the workpiece to rotate. At the same time, the spraying part is started to spray the rotating multiple workpieces. S2. When the rotating column drives the guide plate to rotate, the centrifugal force causes the movable frame rod to slide on the inner wall of the guide plate. When the movable frame rod and the vertical rod gradually move away from each other, the telescopic rod drives the sleeve block to slide on the outer wall of the movable frame rod. The two sleeve blocks approach each other, and the sleeve block drives the connecting plate and the vertical frame rod to move. The two vertical frame rods drive the two oblique bar clamps to approach each other. When the two oblique bar clamps move, they can clamp the top and bottom of the workpiece; S3. When the oblique bar clamping block clamps the workpiece, it is subjected to the reaction force of the workpiece, causing the oblique bar clamping block to drive the vertical frame rod to slide on the inner wall of the limit hole at the connecting plate. At this time, the top of the oblique bar clamping block and the bottom of the connecting plate gradually approach each other, causing the rotating bar to drive the oblique bar clamping block and the vertical frame rod to slide on the inner wall of the limit hole, and the oblique bar clamping block gradually moves toward the inside of the square box.

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