A device for spraying plastic on a car cover

Abstract

The application discloses a kind of automobile cover shell plastic spraying devices, comprising: jig frame, pneumatic control component, clamping jaw driving assembly and several finger clamping jaws, the surface of jig frame is slidably installed with positioning sleeve and movable carriage, the surface of jig frame is fixedly installed with the air drive cylinder for driving movable carriage sliding, pneumatic control component is fixedly installed on the surface of jig frame and is used for the execution movement control of air drive cylinder and finger clamping jaw;Clamping jaw driving assembly includes main sleeve cylinder, driving rod, synchronous gear ring, reciprocating block and several shaft rods corresponding to finger clamping jaw one by one, the surface of driving rod is fixedly sleeved to the fixed sleeve frame inside main sleeve cylinder.In the application, by setting new tooling fixture structure, utilize clamping jaw driving assembly to drive surface multiple finger clamping jaws synchronous deflection movement is clamped to the mounting structure such as automobile cover shell back screw hole, stud, buckle, etc., realize automobile cover shell stable clamping tooling and carry out plastic spraying process, clamping is stable and there is no any occlusion shadow to spraying surface.

Description

Technical Field

[0001] This invention relates to the field of powder coating technology, specifically to a powder coating device for automobile covers. Background Technology

[0002] The automotive industry is a comprehensive enterprise developed based on many related industries and technologies. Automobiles use products from many departments, and various processing technologies are required from raw material processing to complete vehicle assembly. Powder coating is a surface treatment process for industrial metals, using powder coatings, a new type of solvent-free, 100% solid powder coating. There are two main types of powder coatings: thermoplastic powder coatings and thermosetting powder coatings. The coatings are made by mixing special resins, pigments, fillers, curing agents, and other additives in a certain proportion, and then preparing them through processes such as hot extrusion, crushing, and sieving. They are stable at room temperature and, after electrostatic spraying or fluidized bed dipping, are heated and baked to melt and cure, forming a smooth, glossy, permanent coating film that achieves decorative and corrosion-resistant purposes. Powder coating is required for some automotive body panels or component covers during manufacturing to extend the service life of the parts.

[0003] Currently, in automotive body powder coating, the workpiece is mainly held in place by a jig or placed directly on the ground for spraying. During the powder coating process, due to the jig clamping or the obstruction of the processing table surface, there are certain shadow areas on the workpiece surface that cannot be powder coated. Furthermore, the secondary repair operation on these shadow areas in the subsequent touch-up coating cannot perfectly repair them with the powder coating material, resulting in obvious repair marks on the shadow areas and other surface areas after the powder coating is completed, affecting product quality. Therefore, existing jigs mainly use needle-shaped clamps to hold the workpiece surface against the jig to minimize the shadow area. However, in actual operation, secondary shadow repair is still required, and the needle-shaped clamp structure has defects such as excessive pressure on the workpiece surface, which can easily cause damage to the workpiece surface and poor clamping stability.

[0004] In view of this, this paper studies and improves upon the existing problems, and provides an automotive body powder coating device to solve the current problems. The aim is to solve the problems and improve the practical value through this technology. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by the present invention is as follows: an automotive cover powder coating device, comprising: a jig frame, a pneumatic control component, a gripper drive component and a plurality of finger grippers, wherein a positioning sleeve and a movable slide are slidably mounted on the surface of the jig frame, and a pneumatic drive cylinder for driving the movable slide is fixedly mounted on the surface of the jig frame, and the pneumatic control component is fixedly mounted on the surface of the jig frame and is used for motion control of the pneumatic drive cylinder and the finger grippers;

[0007] The gripper drive assembly includes a main sleeve cylinder, a drive rod, a synchronous gear ring, a reciprocating moving block, and several shafts arranged one-to-one with the finger grippers. The surface of the drive rod is fixedly sleeved onto a fixed sleeve frame located inside the main sleeve cylinder. The reciprocating moving block is fixedly installed at the output end of the drive rod and slidably installed inside the main sleeve cylinder. A sleeve cover is detachably installed on one side of the synchronous gear ring. A clamping seat is fixedly installed at one end of the main sleeve cylinder. The shaft passes through the surface of the clamping seat and is sleeved onto the inside of the finger gripper. A sliding pin is provided on the inside of the synchronous gear ring. A sliding groove is opened on the surface of the reciprocating moving block. The sliding pin is slidably sleeved onto the inside of the sliding groove. A transmission gear that meshes with the inside of the synchronous gear ring is provided at one end of the shaft. The finger gripper includes a crank connecting block and a gripper head rotatably installed at one end of the crank connecting block. The surface of the gripper head is provided with a clamping pin and an inner expansion pin.

[0008] In a preferred embodiment, the present invention can be further configured such that: the number of movable slides is two sets and they are slidably installed at both ends of the surface of the fixture frame, and the gripper drive assembly is fixedly installed at the upper and lower ends of the movable slides.

[0009] In a preferred embodiment, the present invention can be further configured such that one side of the finger gripper slides against the surface of the gripper base, and the number of the finger grippers is four and they are evenly distributed in a circumferential direction.

[0010] In a preferred embodiment, the present invention may be further configured such that: the synchronous gear ring is annular and has internal teeth that mesh with the transmission gear, and the surface of the shaft is fitted with a bearing fixed to the inside of the main cylinder.

[0011] In a preferred embodiment, the present invention can be further configured such that: the outer periphery of the reciprocating moving block is provided with a plurality of guide grooves that are sequentially spaced from the slide groove; the surface of the guide groove slides against the inner side of the main sleeve cylinder and the side of the transmission gear; and the reciprocating moving block and the drive rod are arranged in the same direction.

[0012] In a preferred embodiment, the present invention can be further configured such that the slide groove has a two-section structure and the two ends are arranged to intersect at an obtuse angle, and the sliding pin is located at the intersection of the slide grooves in the initial state of the finger gripper.

[0013] In a preferred embodiment, the present invention can be further configured such that one end of the shaft has a spline structure, and the surface of the crank connecting block is provided with a spline sleeve hole adapted to the shaft.

[0014] In a preferred embodiment, the present invention can be further configured such that: both the clamping pin and the inner expansion pin are provided with anti-slip roller sleeves, the anti-slip roller sleeves are made of silicone material, both the clamping pin and the inner expansion pin are cylindrical, the number of clamping pins is two and they are arranged symmetrically about the line of the clamping head, and one end of the inner expansion pin is perpendicularly connected to the surface of the clamping head.

[0015] The beneficial effects achieved by this invention are as follows:

[0016] 1. In this invention, by setting a novel tooling fixture structure, the gripper drive assembly drives multiple finger grippers on the surface to rotate synchronously and clamp the mounting structures such as screw holes, studs, and fasteners on the back of the car cover, thereby achieving stable clamping of the car cover for powder coating process. The clamping is stable and there is no obstruction or shadow on the sprayed surface.

[0017] 2. In this invention, by setting a novel finger gripper structure, the crank deflection motion of the crank connecting block is used to make each gripper head move closer or further away, which can clamp installation structures such as screw holes, studs, and clips of different shapes. The clamping fixture is made using the surface structure of the car cover itself, and it is combined with the free sliding clamping of the positioning sleeve and the moving slide, making the operation simple.

[0018] 3. In this invention, the pneumatic drive structure of the drive rod causes the reciprocating moving block and the synchronous toothed ring to deflect relative to each finger gripper, thereby causing each finger gripper to deflect and clamp. The reciprocating moving block is guided by the surface groove and the sliding pin, resulting in a large output torque, synchronous movement of each finger gripper, and high clamping stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the surface structure of a jig frame according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the gripper drive assembly structure according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the main sleeve cylinder according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the shaft and the finger gripper according to an embodiment of the present invention;

[0024] Figure 6This is a schematic diagram of a synchronous gear ring and reciprocating moving block structure according to an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the finger gripper arrangement structure according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of a finger gripper structure according to an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram illustrating the gripper holding different mounting structures according to an embodiment of the present invention.

[0028] Figure label:

[0029] 100. Fixture frame; 110. Positioning sleeve; 120. Moving slide; 130. Pneumatic cylinder;

[0030] 200. Pneumatic control components;

[0031] 300. Gripper drive assembly; 310. Main sleeve cylinder; 320. Drive rod; 330. Synchronous gear ring; 340. Reciprocating moving block; 350. Shaft; 351. Transmission gear; 311. Sleeve cover; 312. Clamping seat; 313. Fixed sleeve bracket; 331. Sliding pin; 341. Sliding groove; 342. Guide groove;

[0032] 400. Finger gripper; 410. Crank connecting block; 420. Clamp head; 421. Clamping pin; 422. Internal expansion pin. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0034] The following describes, with reference to the accompanying drawings, some embodiments of an automotive body powder coating apparatus provided by the present invention.

[0035] Combination Figure 1-8 As shown, the present invention provides an automotive cover powder coating device, comprising: a jig frame 100, a pneumatic control component 200, a gripper drive component 300, and a plurality of finger grippers 400. A positioning sleeve 110 and a movable slide 120 are slidably mounted on the surface of the jig frame 100. A pneumatic drive cylinder 130 for driving the movable slide 120 to slide is fixedly mounted on the surface of the jig frame 100. The pneumatic control component 200 is fixedly mounted on the surface of the jig frame 100 and is used for motion control of the pneumatic drive cylinder 130 and the finger grippers 400.

[0036] The gripper drive assembly 300 includes a main sleeve cylinder 310, a drive rod 320, a synchronous gear ring 330, a reciprocating moving block 340, and several shafts 350 arranged one-to-one with the finger grippers 400. The surface of the drive rod 320 is fixedly sleeved onto a fixed sleeve frame 313 located inside the main sleeve cylinder 310. The reciprocating moving block 340 is fixedly installed at the output end of the drive rod 320 and slidably installed inside the main sleeve cylinder 310. A sleeve cover 311 is detachably installed on one side of the synchronous gear ring 330. A gripper seat 312 is fixedly installed at one end of the main sleeve cylinder 310. The shafts 350... 50 passes through the surface of the clamp 312 and is sleeved on the inner side of the finger gripper 400. The inner side of the synchronous gear ring 330 is provided with a sliding pin 331. The surface of the reciprocating block 340 is provided with a sliding groove 341. The sliding pin 331 is slidably sleeved on the inner side of the sliding groove 341. One end of the shaft 350 is provided with a transmission gear 351 that meshes with the inner side of the synchronous gear ring 330. The finger gripper 400 includes a crank connecting block 410 and a clamping head 420 rotatably mounted on one end of the crank connecting block 410. The surface of the clamping head 420 is provided with a clamping pin 421 and an inner expansion pin 422.

[0037] In this embodiment, there are two sets of movable slides 120, which are slidably installed at both ends of the surface of the jig frame 100, and the gripper drive assembly 300 is fixedly installed at the upper and lower ends of the movable slides 120.

[0038] In this embodiment, one side of the finger gripper 400 slides against the surface of the gripper 312, and there are four finger grippers 400 that are evenly distributed in a circumferential direction.

[0039] In this embodiment, the synchronous gear ring 330 is annular and has internal teeth that mesh with the transmission gear 351, and the surface of the shaft 350 is fitted with a bearing fixed to the inside of the main sleeve cylinder 310.

[0040] Specifically, the shaft 350 is used to realize the transmission between the synchronous gear ring 330 and the finger gripper 400 to transmit torque.

[0041] In this embodiment, the reciprocating block 340 is provided with a plurality of guide grooves 342 that are sequentially spaced from the slide groove 341 on the outer periphery. The surface of the guide groove 342 slides against the inner side of the main sleeve cylinder 310 and the side of the transmission gear 351. The reciprocating block 340 and the drive rod 320 are arranged in the same direction.

[0042] Furthermore, the slide groove 341 has a two-section structure, and the two ends are arranged to intersect at an obtuse angle. In the initial state of the finger gripper 400, the sliding pin 331 is located at the intersection of the slide groove 341.

[0043] Specifically, the two-end slide groove 341 structure causes the synchronous gear ring 330 to deflect in opposite directions during the retraction and outward movement of the drive rod 320, thus clamping various automotive cover mounting structural components.

[0044] In this embodiment, one end of the shaft 350 has a spline structure, and the surface of the crank connecting block 410 is provided with a spline sleeve hole that is adapted to the shaft 350.

[0045] Specifically, by utilizing the spline engagement of the crank connecting block 410 and the shaft 350, the finger gripper 400 can be quickly assembled and disassembled, and can be installed at various angles, while avoiding deflection and slippage between the shaft 350 and the finger gripper 400.

[0046] In this embodiment, anti-slip roller sleeves are provided on the outer sides of both the clamping pin 421 and the inner expansion pin 422. The anti-slip roller sleeves are made of silicone material. Both the clamping pin 421 and the inner expansion pin 422 are cylindrical. There are two clamping pins 421, which are arranged symmetrically about the clamping head 420. One end of the inner expansion pin 422 is perpendicularly connected to the surface of the clamping head 420.

[0047] Working principle and usage process of this invention:

[0048] When using the car cover powder coating device, the non-powder-coated surface of the car cover to be powder coated faces the jig frame 100. According to the position of the mounting structure on the surface of the car cover, adjust the relative position of the jig frame 100 and the positioning sleeve 110, and the relative position of the movable slide 120 and the jig frame 100, so that the finger gripper 400 moves to the mounting structure position on the non-powder-coated surface of the car cover. The driving direction of the drive rod 320 is controlled according to the type of mounting structure.

[0049] During the outward pushing motion of the drive rod 320, the reciprocating block 340 slides inside the jig frame 100 and the synchronous gear ring 330. The reciprocating block 340 guides the synchronous gear ring 330 to rotate clockwise through the inclined engagement with the sliding pin 331. This causes the shaft 350 and the finger grippers 400 to rotate clockwise simultaneously, resulting in the relative movement of each finger gripper 400 away from the others, allowing for internal clamping of ring-shaped mounting structures such as circular rings and collars. During the retracting motion of the drive rod 320, the reciprocating block 340 slides inside the jig frame 100 and the synchronous gear ring 330. The inner sliding block 340, through the inclined engagement of the sliding pin 331, causes the synchronous gear ring 330 to deflect counterclockwise, that is, the shaft 350 and the finger gripper 400 deflect counterclockwise synchronously, so that each finger gripper 400 moves closer to each other, which can clamp the installation structure components such as studs, screws, and clips. The clamping fixture is made using the surface structure of the car cover itself, so that the car cover can be stably clamped for powder coating process. The clamping is stable and does not obstruct the painted surface or cast any shadows, so no secondary repair painting is required.

[0050] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A powder coating device for automobile covers, characterized in that, include: The fixture frame (100), pneumatic control assembly (200), gripper drive assembly (300), and a plurality of finger grippers (400) are provided. A positioning sleeve (110) and a movable slide (120) are slidably mounted on the surface of the fixture frame (100). A pneumatic drive cylinder (130) for driving the movable slide (120) to slide is fixedly mounted on the surface of the fixture frame (100). The pneumatic control assembly (200) is fixedly mounted on the surface of the fixture frame (100) and is used for motion control of the pneumatic drive cylinder (130) and the finger grippers (400). The gripper drive assembly (300) includes a main sleeve cylinder (310), a drive rod (320), a synchronous gear ring (330), a reciprocating moving block (340), and several shafts (350) arranged one-to-one with the finger grippers (400). The surface of the drive rod (320) is fixedly sleeved on a fixed sleeve frame (313) located inside the main sleeve cylinder (310). The reciprocating moving block (340) is fixedly installed on the output end of the drive rod (320) and slidably installed on the inside of the main sleeve cylinder (310). A sleeve cover (311) is detachably installed on one side of the synchronous gear ring (330). A clamping seat (312) is fixedly installed on one end of the main sleeve cylinder (310). The shafts (350) are arranged one-to-one with the finger grippers (400). 0) The pawl (312) passes through the surface of the clamp (312) and is sleeved on the inner side of the finger gripper (400). The inner side of the synchronous gear ring (330) is provided with a sliding pin (331). The surface of the reciprocating moving block (340) is provided with a sliding groove (341). The sliding pin (331) is slidably sleeved on the inner side of the sliding groove (341). One end of the shaft (350) is provided with a transmission gear (351) that meshes with the inner side of the synchronous gear ring (330). The finger gripper (400) includes a crank connecting block (410) and a clamping head (420) rotatably mounted on one end of the crank connecting block (410). The surface of the clamping head (420) is provided with a clamping pin (421) and an inner expansion pin (422). The slide (341) has a two-section structure, and the two ends are arranged to intersect at an obtuse angle. In the initial state of the finger gripper (400), the sliding pin (331) is located at the intersection of the slide (341); The clamping pin (421) and the inner expansion pin (422) are both provided with anti-slip roller sleeves on their outer sides. The anti-slip roller sleeves are made of silicone material. The clamping pin (421) and the inner expansion pin (422) are both cylindrical. There are two clamping pins (421) and they are arranged symmetrically about the clamping head (420). One end of the inner expansion pin (422) is perpendicularly connected to the surface of the clamping head (420).

2. The automotive body powder coating device according to claim 1, characterized in that, The number of movable slides (120) is two sets and they are slidably installed at both ends of the surface of the jig frame (100). The gripper drive assembly (300) is fixedly installed at the upper and lower ends of the movable slides (120).

3. The automotive body powder coating device according to claim 1, characterized in that, One side of the finger gripper (400) slides against the surface of the gripper (312), and the number of the finger grippers (400) is four and they are evenly distributed in a circumferential direction.

4. The automotive body powder coating device according to claim 1, characterized in that, The synchronous gear ring (330) is circular and has internal teeth that mesh with the transmission gear (351). The surface of the shaft (350) is fitted with a bearing fixed to the inside of the main cylinder (310).

5. The automotive body powder coating device according to claim 1, characterized in that, The reciprocating moving block (340) has a plurality of guide grooves (342) arranged at intervals with the slide groove (341) on its outer periphery. The surface of the guide groove (342) slides against the inner side of the main sleeve cylinder (310) and the side of the transmission gear (351). The reciprocating moving block (340) and the drive rod (320) are arranged in the same direction.

6. The automotive body powder coating device according to claim 1, characterized in that, One end of the shaft (350) has a spline structure, and the surface of the crank connecting block (410) is provided with a spline sleeve hole that is adapted to the shaft (350).

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