Injection molding and spraying device for plastic parts

Abstract

The utility model relates to the field of plastic part spraying, and discloses a plastic part injection molding spraying device which comprises two supporting plates, the two supporting plates are respectively fixed on the top surface of a base, a rotating ring is rotatably arranged between the two supporting plates, two arc-shaped clamping plates are movably arranged in the rotating ring, and the two arc-shaped clamping plates are fixed on the top surface of the base. And connecting plates are fixed to the front sides of the two supporting plates correspondingly, suction cups are fixed to the inner walls of inner rings of the two bearings correspondingly, a mounting groove is formed in the top face of the base, a guide rail is fixed to the interior of the mounting groove, a U-shaped plate is fixed to the top face of a sliding block of the guide rail, and a spray gun is fixed to the interior of the U-shaped plate. According to the plastic part spraying device, the supporting plate, the rotating ring, the arc-shaped clamping plate, the connecting plate, the connecting ring, the bearing, the suction cup, the guide rail, the U-shaped plate and the spraying gun are used in cooperation, a worker can spray the front side and the outer wall of a plastic part conveniently, diversified spraying requirements are met, and therefore the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic parts spraying, specifically to a plastic parts injection molding spraying device. Background Technology

[0002] Injection molding and coating of automotive plastic parts is a common manufacturing process for automotive components. It involves molding plastic materials into automotive parts and then applying a coating to their surface using a spraying process. This process is commonly used to produce interior and exterior automotive parts, such as dashboards, door handles, and front and rear bumpers. First, during the injection molding process, plastic granules are heated and injected into a mold to form the desired part shape. This injection molding process is highly efficient, precise, and cost-effective, and therefore widely used in automotive manufacturing. Next, after the plastic parts are injection molded, a spraying process is applied to improve their appearance, wear resistance, and corrosion resistance.

[0003] According to Chinese Patent No. CN222325477U, a high-uniformity automotive plastic parts injection molding and spraying device includes a clamp and a spray gun. The clamp fixes the plastic part to be processed, and the spray gun is arranged on the front side of the plastic part to be sprayed. The outer contour of the plastic part to be processed is wrapped with a negative pressure air pipe. The pressure inside the negative pressure air pipe is lower than the air pressure around the plastic part to be processed. The negative pressure air pipe has adsorption holes that are attached to the surface of the plastic part to be processed. The adsorption holes are arranged along the array of the negative pressure air pipe. The negative pressure air pipe has negative pressure holes that are parallel to the direction of the paint spraying by the spray gun. The negative pressure holes are arranged along the array of the negative pressure air pipe.

[0004] In the above solution, the plastic part is clamped and fixed at the rear side by a clamp, and then wrapped around the outer wall of the plastic part by a negative pressure air pipe. Then, it is sprayed by a spray gun. This has the following disadvantages: it can only spray the front side of the plastic part, and therefore cannot spray the outer wall, thus failing to meet diverse spraying needs and reducing the practicality of the device. Utility Model Content

[0005] The purpose of this invention is to provide a plastic injection molding spraying device to solve the problem that it can only spray the front side of the plastic part, and therefore cannot spray the outer wall, thus failing to meet diverse spraying needs and reducing the practicality of the device.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a plastic injection molding spraying device, comprising two support plates, the two support plates being respectively fixed to the top surface of a base, a rotating ring being rotatably arranged between the two support plates, two arc-shaped clamping plates being movably arranged inside the rotating ring, connecting plates being respectively fixed to the front sides of the two support plates, connecting rings being movably arranged on the inner sides of the two connecting plates, bearings being respectively fixed inside the two connecting rings, suction cups being respectively fixed to the inner walls of the inner rings of the two bearings, an installation groove being provided on the top surface of the base, a guide rail being fixed inside the installation groove, a U-shaped plate being fixed to the top surface of the slider of the guide rail, and a spray gun being fixed inside the U-shaped plate.

[0007] Preferably, a rotating hole is provided on one side of each of the two support plates, and a rotating shaft is fixed on the left and right sides of the outer wall of the rotating ring. The two rotating shafts are rotatably arranged in the two rotating holes. A drive motor is fixed on the right side of the right support plate, and the output shaft of the drive motor is fixedly connected to the rotating shaft on the right side.

[0008] Preferably, the outer sides of the two arc-shaped clamps are respectively provided with rotating grooves, the top and bottom surfaces of the rotating ring are respectively provided with threaded holes, bolts are respectively threaded into the two threaded holes, and rotating blocks are respectively fixed to the inner ends of the two bolts. The two rotating blocks are respectively rotatably arranged in the two rotating grooves.

[0009] Preferably, the top and bottom surfaces of the rotating ring are respectively provided with two limiting holes, and the outer walls of the two arc-shaped clamps are respectively fixed with two limiting posts, and the two limiting posts are slidably inserted into the two limiting holes.

[0010] Preferably, the inner walls of the two arc-shaped clamps are respectively fixed with rubber pads.

[0011] Preferably, each of the two connecting plates has a movable hole on one side, and an electric push rod is fixed to the outer side of each of the two connecting plates. One end of the telescopic rod of each of the two electric push rods is fixedly connected to the outer side of each of the two connecting rings.

[0012] Compared with existing technologies, the plastic injection molding spraying device that adopts the above technical solution has the following beneficial effects:

[0013] 1. In use, when the operator needs to spray paint the front side of a plastic part, the plastic part is first placed inside the rotating ring, then clamped and fixed by two arc-shaped clamps. Next, by activating the guide rail, the slider on it moves forward, driving the U-shaped plate and spray gun forward to the appropriate position. The front side of the plastic part is then sprayed using the spray gun. When spraying the outer wall of the plastic part, the front and rear sides of the plastic part are aligned with two suction cups respectively. The two suction cups then adhere and fix the plastic part. The bearings allow the operator to rotate the plastic part, while the spray gun sprays the outer wall. The coordinated use of the support plate, rotating ring, arc-shaped clamps, connecting plate, connecting ring, bearings, suction cups, guide rail, U-shaped plate, and spray gun facilitates spraying of the front and outer walls of plastic parts, meeting diverse spraying needs and thus improving the practicality of the device.

[0014] Second, during use, when workers need to spray paint the back of plastic parts, there is no need to reinstall the plastic parts. Simply start the drive motor to rotate the shaft, which in turn causes the rotating ring to flip, turning the back of the plastic part to the front. Then, the spray gun is aligned and sprayed, reducing operational difficulty and labor intensity. By rotating the bolts, the rotating block can rotate inside the rotating groove, thereby moving the arc-shaped clamps. Adjusting the distance between the two arc-shaped clamps allows it to accommodate plastic parts of different sizes, improving the flexibility and practicality of the device.

[0015] Thirdly, during use, the combination of the limiting holes and limiting posts helps to limit the arc-shaped clamping plate, preventing it from shifting during movement and thus improving the stability of the arc-shaped clamping plate during movement. The rubber pads ensure that the surface of the plastic parts will not be scratched or damaged during clamping, while also increasing friction to prevent slippage, improving clamping stability and protection. By activating two electric push rods, the two connecting rings can be moved, thereby adjusting the distance between the two suction cups, enabling the clamping and fixing of plastic parts of different thicknesses, improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0017] Figure 2 This is an exploded view of an embodiment.

[0018] Figure 3 This is an exploded view of the support plate and connecting ring in the embodiment.

[0019] Figure 4 This is an exploded view of the rotating ring and rotating block in the embodiment.

[0020] In the diagram: 1. Support plate; 2. Base; 3. Rotating ring; 4. Arc-shaped clamp; 5. Connecting plate; 6. Connecting ring; 7. Bearing; 8. Suction cup; 9. Mounting groove; 10. Guide rail; 11. U-shaped plate; 12. Spray gun; 13. Rotating hole; 14. Rotating shaft; 15. Drive motor; 16. Rotating groove; 17. Threaded hole; 18. Bolt; 19. Rotating block; 20. Limiting hole; 21. Limiting post; 22. Rubber pad; 23. Movable hole; 24. Electric push rod. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, a plastic injection molding spraying device includes two support plates 1, which are respectively fixed to the top surface of a base 2. A rotating ring 3 is rotatably arranged between the two support plates 1. Two arc-shaped clamping plates 4 are movably arranged inside the rotating ring 3. Connecting plates 5 are respectively fixed to the front side of the two support plates 1. Connecting rings 6 are movably arranged on the inner side of the two connecting plates 5. Bearings 7 are respectively fixed inside the two connecting rings 6. Suction cups 8 are respectively fixed to the inner wall of the inner ring of the two bearings 7. An installation groove 9 is opened on the top surface of the base 2. A guide rail 10 is fixed inside the installation groove 9. A U-shaped plate 11 is fixed to the top surface of the slider of the guide rail 10. A spray gun 12 is fixed inside the U-shaped plate 11. The spray gun 12 is an existing structure. For reference, please refer to the Chinese Patent Publication No. CN222325477U. The spray gun 12 in this application is the same as the spray gun in the referenced document.

[0023] In use, when the operator needs to spray paint the front side of a plastic part, the plastic part is first placed inside the rotating ring 3, and then clamped and fixed by two arc-shaped clamps 4. Then, by activating the guide rail 10, the slider on it moves forward, causing the U-shaped plate 11 and spray gun 12 to move forward to the appropriate position. The front side of the plastic part is then sprayed using the spray gun 12. When spraying the outer wall of the plastic part, the front and rear sides of the plastic part are aligned with the two suction cups 8 respectively. The two suction cups 8 then adhere and fix the plastic part. The operator then rotates the plastic part via the bearing 7, while the outer wall of the plastic part is sprayed using the spray gun 12. The coordinated use of the support plate 1, rotating ring 3, arc-shaped clamps 4, connecting plate 5, connecting ring 6, bearing 7, suction cups 8, guide rail 10, U-shaped plate 11, and spray gun 12 facilitates the spraying of the front side and outer wall of plastic parts, meeting diverse spraying needs and thus improving the practicality of the device.

[0024] like Figures 1-4As shown, rotating holes 13 are respectively opened on one side of the two support plates 1. Rotating shafts 14 are fixed on the left and right sides of the outer wall of the rotating ring 3. The two rotating shafts 14 are rotatably arranged in the two rotating holes 13. A drive motor 15 is fixed on the right side of the support plate 1 on the right side. The output shaft of the drive motor 15 is fixedly connected to the rotating shaft 14 on the right side.

[0025] When workers need to spray paint the back of a plastic part, they do not need to reinstall the plastic part. They only need to start the drive motor 15 to make the rotating shaft 14 rotate, which in turn drives the rotating ring 3 to flip, so that the back of the plastic part flips to the front. Then, the spray gun 12 is aligned and sprayed, which reduces the difficulty of operation and labor intensity.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, rotating grooves 16 are respectively opened on the outer sides of the two arc-shaped clamping plates 4. Threaded holes 17 are respectively opened on the top and bottom surfaces of the rotating ring 3. Bolts 18 are threaded into the two threaded holes 17. Rotating blocks 19 are respectively fixed to the inner ends of the two bolts 18. The two rotating blocks 19 are rotatably set in the two rotating grooves 16. Two limiting holes 20 are respectively opened on the top and bottom surfaces of the rotating ring 3. Two limiting posts 21 are respectively fixed on the outer walls of the two arc-shaped clamping plates 4. The two limiting posts 21 are slidably inserted into the two limiting holes 20.

[0027] In use, rotating the bolt 18 allows the rotating block 19 to rotate within the rotating groove 16, thereby moving the arc-shaped clamping plate 4. Adjusting the distance between the two arc-shaped clamping plates 4 allows it to accommodate plastic parts of different sizes, improving the flexibility and practicality of the device. The cooperation between the limiting hole 20 and the limiting post 21 helps to limit the arc-shaped clamping plate 4, preventing it from shifting during movement and thus improving the stability of the arc-shaped clamping plate 4 during movement.

[0028] like Figures 1-4 As shown, rubber pads 22 are fixed to the inner walls of the two arc-shaped clamps 4 respectively, and movable holes 23 are opened on one side of the two connecting plates 5 respectively. Electric push rods 24 are fixed to the outer sides of the two connecting plates 5 respectively, and one end of the telescopic rod of the two electric push rods 24 is fixedly connected to the outer side of the two connecting rings 6 respectively.

[0029] During use, the rubber pad 22 helps ensure that the surface of the plastic part is not scratched or damaged during clamping, while also increasing friction to prevent slippage and improving clamping stability and protection. By activating the two electric push rods 24, the two connecting rings 6 are moved, thereby adjusting the distance between the two suction cups 8, which allows for clamping and fixing of plastic parts of different thicknesses, improving the practicality of the device.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A plastic part injection spraying device comprising two support plates (1), two said support plates (1) are respectively fixed on the top surface of the base (2), characterized in that, Rotatable rotating ring (3) is arranged between two supporting plates (1), the inside of rotating ring (3) is movably provided with two arc-shaped clamping plates (4), the front side of two supporting plates (1) is respectively fixed with connecting plate (5), the inside of two connecting plates (5) is respectively movably provided with connecting ring (6), the inside of two connecting rings (6) is respectively fixed with bearing (7), the inner ring inner wall of two bearings (7) is respectively fixed with suction disc (8), the top surface of base (2) is provided with mounting groove (9), the inside of mounting groove (9) is fixed with guide rail (10), the top surface of the sliding block of guide rail (10) is fixed with U-shaped plate (11), the inside of U-shaped plate (11) is fixed with spray gun (12).

2. The injection molding and painting device for plastic parts according to claim 1, characterized in that: Rotary hole (13) is respectively arranged on one side of two supporting plates (1), rotary shaft (14) is respectively fixed on the left side and the right side of the outer wall of rotating ring (3), two rotary shafts (14) are respectively rotatably arranged in two rotary holes (13), drive motor (15) is fixed on the right side of the right side supporting plate (1), the output shaft of drive motor (15) is fixedly connected with the right rotary shaft (14).

3. The injection molding and painting apparatus for plastic parts according to claim 2, wherein: Rotary groove (16) is respectively arranged on the outside of two arc-shaped clamping plates (4), threaded hole (17) is respectively arranged on the top surface and the bottom surface of rotating ring (3), bolt (18) is respectively screwed in two threaded holes (17), rotating block (19) is respectively fixed on the inner end of two bolts (18), two rotating blocks (19) are respectively rotatably arranged in two rotary grooves (16).

4. The injection molding and painting apparatus for plastic parts according to claim 3, wherein: Two limiting holes (20) are respectively arranged on the top surface and the bottom surface of rotating ring (3), two limiting columns (21) are respectively fixed on the outer wall of two arc-shaped clamping plates (4), two limiting columns (21) are respectively slidably inserted into two limiting holes (20).

5. The injection molding and painting apparatus for plastic parts according to claim 1, wherein: Rubber pad (22) is respectively fixed on the inner wall of two arc-shaped clamping plates (4).

6. The injection molding and painting apparatus for plastic parts according to claim 5, wherein: Movable hole (23) is respectively arranged on one side of two connecting plates (5), electric push rod (24) is respectively fixed on the outside of two connecting plates (5), one end of the telescopic rod of two electric push rods (24) is respectively fixedly connected with the outside of two connecting rings (6).

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