Injection molding and spraying device for plastic handicrafts

Abstract

The utility model provides an injection molding spraying device for plastic artware, and belongs to the technical field of injection molding equipment. The injection molding spraying device comprises a fixed mold, a movable mold, a bottom plate, a top plate, two side plates and a translation vertical plate, a flat trolley capable of translating transversely is arranged on the bottom plate, a mold closing spring is arranged at the front end of the flat trolley, a material returning spring is arranged at the rear end of the flat trolley, a motor and a rotating seat are fixed to the flat trolley, and a rotating shaft is rotationally connected to the rotating seat; a driving gear is fixed to an output shaft of the motor, a driven gear meshed with the driving gear fixedly sleeves the rotating shaft, a cylindrical mold core is fixedly connected to the upper end of the rotating shaft, the mold core can be clamped after the fixed mold and the movable mold are attached, a spraying channel is formed in the movable mold, and a spray head connected with the spraying channel is embedded in the mold closing face of the movable mold. And an inlet of the spraying channel is connected with a liquid feeding pipe. The injection molding process and the spraying process are both completed in the device, the injection-molded artware can be sprayed immediately without being transferred, and time, space and cost are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molding equipment and relates to an injection molding spraying device for plastic handicrafts. Background Art

[0002] After spraying, plastic crafts can achieve the following effects: 1. It can cover the surface defects of the molded parts; 2. Because it is difficult to color plastic parts themselves, spraying can be used to obtain a variety of colors; the electrostatic performance of plastic parts is improved and dust absorption is reduced; 3. The hardness and scratch resistance of plastic parts are enhanced; the weather resistance of plastic parts is improved; 4. The gloss of the surface of plastic parts can be adjusted at will; some special paints such as sand texture paint and fluff paint can obtain a better appearance and feel. At present, plastic crafts are injection molded and sprayed separately, and the plastic crafts need to be transferred in the middle, which is time-consuming and laborious. Utility Model Content

[0003] The utility model aims to solve the above problems in the prior art and proposes an injection spraying device for plastic crafts. After the injection is completed, a layer of protective coating is automatically sprayed on the surface of the crafts in one go without transferring the crafts.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an injection molding spraying device for plastic handicrafts, including a fixed mold, a movable mold, a bottom plate, a top plate, two side plates and a translation vertical plate, the side plates are vertically fixed on both sides of the bottom plate, the two ends of the top plate are respectively fixedly connected to the two side plates, the inner side of one side plate is fixedly connected to the fixed mold, the outer side of the other side plate is fixed with a mold clamping cylinder, the movable mold is fixed on the translation vertical plate, the telescopic rod of the mold clamping cylinder is connected to the translation vertical plate, the bottom plate is provided with a flat trolley that can be translated laterally, the front end of the flat trolley is provided with a mold clamping spring, the flat A material withdrawal spring is provided at the rear end of the plate trolley, a motor and a rotating seat are fixed on the flat trolley, a rotating shaft is rotatably connected to the rotating seat, a driving gear is fixed on the output shaft of the motor, a driven gear meshing with the driving gear is fixedly sleeved on the rotating shaft, a cylindrical mold core is fixedly connected to the upper end of the rotating shaft, the fixed mold and the movable mold can clamp the mold core after being fitted together, mold cavities are opened on the mating surfaces of the fixed mold and the movable mold, the upper end of the mold core extends into the mold cavity, a spray channel is opened on the movable mold, a nozzle connected to the spray channel is embedded on the mating surface of the movable mold, and a liquid delivery pipe is connected to the inlet of the spray channel.

[0005] The mold-closing cylinder drives the translational vertical plate forward, so that the movable mold approaches the fixed mold. During this process, the translational vertical plate will first contact the mold-closing spring, and then push the flatbed trolley to move until the mold core is against the fixed mold. The flatbed trolley stops moving, and the movable mold continues to move until it fits with the fixed mold. Then the molten plastic is injected into the injection tube, and the injection is stopped after the mold cavity is filled. After the craft is cooled, the mold-closing cylinder drives the translational vertical plate backward, and the movable mold is separated from the fixed mold. At the same time, the material withdrawal spring pushes the flatbed trolley and the mold core to move, so that the mold core is separated from the fixed mold, and the spraying assembly is started. The outer end of the liquid delivery pipe is connected to the pumping pump in the liquid storage barrel, and the motor is started to drive the mold core to rotate. The nozzle sprays the protective coating toward the rotating craft. After the spraying is completed, the upper end of the craft is adsorbed by the vacuum adsorption head, and the craft is pulled out of the mold core.

[0006] Furthermore, guide holes are provided on the top plate and the bottom plate, and the upper and lower ends of the translational vertical plate are provided with protrusions that are inserted into the guide holes and slide along the guide holes. The upper and lower ends of the translational vertical plate are embedded in the guide holes, and will not shake left and right when sliding.

[0007] Furthermore, the translational vertical plate is connected with a guide post, the side plate is fixed with a guide sleeve, and the guide post is slidably inserted into the guide sleeve, so that the translational vertical plate can slide more stably without shaking back and forth, and at the same time plays a certain supporting role.

[0008] Furthermore, the bottom plate is provided with a linear track for the wheels of the flatbed trolley to be embedded in. The linear track enables the flatbed trolley to move along a straight line, so that the mold core can be accurately embedded in the mold cavity.

[0009] Furthermore, the nozzles have two rows, which are respectively located on both sides of the mold cavity, and the nozzles face the mold core.

[0010] Furthermore, the inner end of the material removal spring abuts against the side plate.

[0011] Furthermore, an injection channel is opened on the fixed mold, the injection channel is communicated with the mold cavity, and an injection pipe is connected to the inlet of the injection channel.

[0012] Compared with the prior art, the injection molding spraying device for plastic crafts has the following advantages:

[0013] 1. This device has a high degree of automation. After the injection molding is completed, the craftwork is separated from the mold cavity through the material withdrawal spring, completing the automatic demoulding process and automatic spraying.

[0014] 2. The spraying structure is integrated into the mold. Both the injection molding and spraying processes are completed in this device. The injection molded craftwork can be sprayed immediately without transfer, saving time, space and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the injection molding spraying device of the plastic handicraft.

[0016] Figure 2 It is a structural diagram of the moving mold.

[0017] In the figure, 1, fixed mold; 2, movable mold; 3, bottom plate; 4, top plate; 5, side plate; 6, translation vertical plate; 7, mold clamping cylinder; 8, flat trolley; 9, mold clamping spring; 10, material withdrawal spring; 11, motor; 12, rotating seat; 13, rotating shaft; 14, driving gear; 15, driven gear; 16, mold core; 17, mold cavity; 18, nozzle; 19, liquid feeding pipe; 20, guide slide hole; 21, convex head; 22, guide column; 23, guide sleeve; 24, handicraft; 25, injection molding tube. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 As shown, the injection molding spraying device of the plastic handicraft comprises a fixed mold 1, a movable mold 2, a bottom plate 3, a top plate 4, two side plates 5 and a translation vertical plate 6. The side plates 5 are vertically fixed on both sides of the bottom plate 3, and the two ends of the top plate 4 are respectively fixedly connected to the two side plates 5, the inner side of one side plate 5 is fixedly connected to the fixed mold 1, and the outer side of the other side plate 5 is fixed with a mold clamping cylinder 7, the movable mold 2 is fixed on the translation vertical plate 6, and the telescopic rod of the mold clamping cylinder 7 is connected to the translation vertical plate 6. A flat trolley 8 that can be translated laterally is provided on the bottom plate 3, and a mold clamping spring is provided at the front end of the flat trolley 8 Spring 9, a material-returning spring 10 is provided at the rear end of the flatbed trolley 8, a motor 11 and a rotating seat 12 are fixed on the flatbed trolley 8, a rotating shaft 13 is rotatably connected to the rotating seat 12, a driving gear 14 is fixed on the output shaft of the motor 11, a driven gear 15 meshing with the driving gear 14 is fixedly sleeved on the rotating shaft 13, a cylindrical mold core 16 is fixedly connected to the upper end of the rotating shaft 13, the fixed mold 1 and the movable mold 2 can clamp the mold core 16 after being fitted together, a mold cavity 17 is opened on the mating surfaces of the fixed mold 1 and the movable mold 2, and the upper end of the mold core 16 extends into the mold cavity 17.

[0020] like Figure 2 As shown, a spray channel is opened on the movable mold 2, and a nozzle 18 connected to the spray channel is embedded on the mold surface of the movable mold 2, and the inlet of the spray channel is connected to a liquid delivery pipe 19. The nozzle 18 has two rows, which are respectively located on both sides of the mold cavity 17, and the nozzle 18 faces the mold core 16.

[0021] The top plate 4 and the bottom plate 3 are provided with guide holes 20, and the upper and lower ends of the translation vertical plate 6 are provided with protrusions 21 inserted into and sliding along the guide holes 20. The translation vertical plate 6 is connected with a guide post 22, and a guide sleeve 23 is fixed on the side plate 5, and the guide post 22 is slidably inserted into the guide sleeve 23. The bottom plate 3 is provided with a linear track for the wheels of the flatbed trolley 8 to be embedded. The linear track enables the flatbed trolley 8 to move along a straight line, so that the mold core 16 can be accurately embedded in the mold cavity 17, and the inner end of the material removal spring 10 is against the side plate 5.

[0022] An injection channel is provided on the fixed mold 1 , the injection channel is communicated with the mold cavity 17 , and an injection pipe 25 is connected to the inlet of the injection channel.

[0023] Working process: The mold closing cylinder 7 drives the translational vertical plate 6 forward, so that the movable mold 2 approaches the fixed mold 1. During this process, the translational vertical plate 6 will first contact the mold closing spring 9, and then push the flatbed trolley 8 to move until the mold core 16 is against the fixed mold 1. The flatbed trolley 8 stops moving, and the movable mold 2 continues to move until it fits with the fixed mold 1. Then, the molten plastic is injected into the injection tube 25, and the injection molding is stopped after the mold cavity 17 is filled. After the craftwork 24 is cooled, the mold closing cylinder 7 drives the translation vertical plate 6 to retreat, and the movable mold 2 is separated from the fixed mold 1. At the same time, the material withdrawal spring 10 pushes the flat trolley 8 and the mold core 16 to move, so that the mold core 16 is separated from the fixed mold 1, and the spraying component is started. The outer end of the liquid delivery pipe 19 is connected to the pumping pump in the liquid storage barrel, and the motor 11 is started to drive the mold 2 core to rotate. The nozzle 18 sprays the protective coating toward the rotating craftwork 24. After the spraying is completed, the upper end of the craftwork 24 is adsorbed by the vacuum adsorption head, and the craftwork 24 is pulled out from the mold core 16.

[0024] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An injection molding spraying device for plastic crafts, comprising a fixed mold, a movable mold, a bottom plate, a top plate, two side plates and a translation vertical plate, the side plates are vertically fixed on both sides of the bottom plate, and the two ends of the top plate are respectively fixedly connected to the two side plates, characterized in that: The inner side of one of the side plates is fixedly connected to the fixed mold, and the outer side of the other side plate is fixed with a mold closing cylinder. The movable mold is fixed on the translation vertical plate, and the telescopic rod of the mold closing cylinder is connected to the translation vertical plate. A flat trolley which can be translated laterally is provided on the bottom plate, and a mold closing spring is provided at the front end of the flat trolley, and a material withdrawal spring is provided at the rear end of the flat trolley. A motor and a rotating seat are fixed on the flat trolley, and a rotating shaft is rotatably connected to the rotating seat. A driving gear is fixed on the output shaft of the motor, and a driven gear meshing with the driving gear is fixedly sleeved on the rotating shaft. A cylindrical mold core is fixedly connected to the upper end of the rotating shaft. The fixed mold and the movable mold can clamp the mold core after being fitted together. Mold cavities are provided on the mold closing surfaces of the fixed mold and the movable mold, and the upper end of the mold core extends into the mold cavity. A spray channel is provided on the movable mold, and a nozzle connected to the spray channel is embedded on the mold closing surface of the movable mold, and a liquid feeding pipe is connected to the inlet of the spray channel.

2. The injection molding spraying device for plastic handicrafts according to claim 1, characterized in that: The top plate and the bottom plate are provided with guide slide holes, and the upper and lower ends of the translation vertical plate are provided with convex heads which are inserted into the guide slide holes and slide along the guide slide holes.

3. The injection molding spraying device for plastic handicrafts according to claim 2, characterized in that: The translation vertical plate is connected with a guide column, a guide sleeve is fixed on the side plate, and the guide column is slidably inserted into the guide sleeve.

4. The injection molding spraying device for plastic handicrafts according to claim 3, characterized in that: The bottom plate is provided with a linear track for the wheels of the flatbed trolley to be embedded.

5. The injection molding spraying device for plastic handicrafts according to claim 4, characterized in that: The nozzles are arranged in two rows, respectively located on two sides of the mold cavity, and the nozzles face the mold core.

6. The injection molding spraying device for plastic handicrafts according to claim 5, characterized in that: The inner end of the stripping spring rests against the side plate.

7. The injection molding spraying device for plastic handicrafts according to claim 6, characterized in that: An injection channel is provided on the fixed mold, the injection channel is communicated with the mold cavity, and an injection pipe is connected to the inlet of the injection channel.

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