In-mold spraying mold of covering part

Abstract

The utility model provides an in-mold spraying mold of a covering part, and belongs to the technical field of plastic part processing. The in-mold spraying mold of the covering part comprises a base, an upper mold base, guide columns, an upper top plate, an upper mounting plate, a lifting plate, a male mold, an injection molding female mold, a spraying female mold, an injection molding mounting plate, a spraying mounting plate and a sliding mechanism, the injection molding female mold is fixed to the injection molding mounting plate, and the spraying female mold is fixed to the spraying mounting plate. The sliding mechanism comprises a sliding plate, a translation cylinder and a guide sliding plate fixed on the base, the guide sliding plate is in sliding fit with the sliding plate, the translation cylinder is fixed at one end of the guide sliding plate, a telescopic rod of the translation cylinder is fixed with one side of the sliding plate, and the injection molding mounting plate and the spraying mounting plate are sequentially fixed on the sliding plate. And the sliding mechanism is arranged to drive the two female dies with different functions to exchange positions so as to realize injection molding and in-die spraying of the product, so that base material molding and surface spraying of the whole product are realized in one step.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic parts processing and relates to an in-mold spraying mold for a covering part. Background Art

[0002] The existing conventional processing method is to first inject semi-finished plastic parts, and then transfer the semi-finished plastic parts to other stations for surface coating processing. This process method results in many stations, complicated processes, and the required equipment production line also occupies a large space. The product needs to be transferred between the two processes, resulting in a long production cycle. Therefore, it is urgent to design a mold that integrates injection molding and spraying. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and propose an in-mold spraying mold for a cover part. A sliding mechanism is provided to drive two concave molds with different functions to exchange positions to realize injection molding and in-mold spraying of the product, thereby realizing the substrate molding and surface spraying of the entire product in one step.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an in-mold spraying mold for a cover, comprising a base, an upper mold base, a guide column, an upper top plate, an upper mounting plate, a lifting plate, a punch, an injection mold, a spraying mold, an injection mounting plate, and a spraying mounting plate, characterized in that the guide column is fixed to the base, a through hole for the guide column to pass through is opened on the upper mold base, the upper mold base slides along the guide column, the upper top plate is fixed to the lower end surface of the upper mold base, side plates are fixed on both sides of the upper top plate, and the upper mounting plate is fixed on At the lower end of the side plate, the male mold is fixed in the embedding groove of the upper mounting plate, a slightly open compression oil cylinder is fixed on the upper mounting plate, a threaded hole is opened on the telescopic rod of the slightly open compression oil cylinder, the lifting plate is sleeved outside the male mold, a fastening bolt is passed through the lifting plate, and the fastening bolt is threadedly connected with the threaded hole of the telescopic rod, the injection mold is fixed on the injection mounting plate, the spraying mold is fixed on the spraying mounting plate, an injection mold cavity is opened on the injection mold, a spraying mold cavity is opened on the spraying mold, and an overflow groove connected to the spraying mold cavity is opened on the lifting plate;

[0005] It also includes a sliding mechanism, which includes a sliding plate, a translation cylinder and a guide slide plate fixed on a base, the guide slide plate slidingly cooperates with the sliding plate, the translation cylinder is fixed at one end of the guide slide plate, the telescopic rod of the translation cylinder is fixed to one side of the sliding plate, and the injection molding mounting plate and the spray mounting plate are fixed on the sliding plate in sequence.

[0006] Furthermore, L-shaped side baffles are fixed on both sides of the guide slide plate, and the sliding plate is embedded between the two side baffles.

[0007] Furthermore, the injection molding mounting plate and the spraying mounting plate are closely attached to each other, and the injection molding concave mold and the spraying concave mold are closely attached to each other.

[0008] Furthermore, a conical mounting hole is opened on the base, a connecting hole connected to the mounting hole is opened on the guide plate, and an injection flow channel connecting the connecting hole and the injection mold cavity is opened on the sliding plate, the injection mounting plate, and the injection mold.

[0009] Furthermore, a spray joint is connected to the side of the spraying cavity, and a spraying flow channel connecting the spraying cavity and the spray joint is opened on the spraying cavity.

[0010] Furthermore, a feed plate is provided between the two side plates, and a limit column is fixed between the upper feed plate and the upper mounting plate, and the limit column penetrates the feed plate, and a plurality of feed rods 1 and 2 are fixed on the feed plate, and the feed rod 1 penetrates the upper mounting plate and the punch, and the feed rod 2 penetrates the upper mounting plate and the lifting plate. When unloading, the feed plate is driven downward by the unloading cylinder, so that the feed rods 1 and 2 are moved downward together, so that the product is separated from the punch and the lifting plate.

[0011] The injection molding machine controls the upper mold seat to approach the base, so that the punch and the injection mold are closed, and the injection pipe is inserted from the mounting hole, passed through the connecting hole and connected to the injection runner, and the molten plastic flows into the injection mold cavity. After the injection mold cavity is filled, wait for cooling and shaping. After shaping, the mold is opened to keep the upper mold seat away from the base. At this time, the product is firmly embedded in the punch, and the sliding mechanism is started. The translation cylinder pulls the sliding plate to pull the spraying mold and the spraying mounting plate directly below the punch. The upper mold seat is controlled to move down again, and before closing the mold, the micro-open compression cylinder is controlled to extend its telescopic rod for a distance and be in a micro-open state. In this way, there is a certain gap between the lifting plate and the upper mounting plate, and the lifting plate is against the die, so that the distance between the punch and the spraying die is larger. After the paint is filled, the slightly opened compression cylinder is started to shrink the telescopic rod, so that the lifting plate abuts against the upper mounting plate, and the upper mold base is controlled to continue to press down. As the punch moves downward to squeeze the product and paint, the excess paint and air are squeezed into the overflow groove. The purpose is to prevent the product from generating defects such as bubbles and flow marks during the spraying process in the spray mold cavity, thereby improving the production stability of the product and achieving cost reduction and efficiency improvement.

[0012] Compared with the prior art, the in-mold spraying mold of the cover has the following advantages:

[0013] 1. A micro-open compression cylinder and a lifting plate are set up. The cylinder drives the movable plate to realize the micro-open compression action of the mold, so as to achieve the purpose of changing the volume of the spray mold cavity.

[0014] 2. An overflow trough is set up to ensure that no defects such as bubbles and flow marks are generated during the spraying process of the product in the mold, thereby improving the production stability of the product and achieving cost reduction and efficiency improvement.

[0015] 3. A sliding mechanism is set up, and the sliding plate is driven by a translation cylinder on the guide slide, which drives two concave molds with different functions to exchange positions to realize injection molding and in-mold spraying of the product, thereby realizing the substrate molding and surface spraying of the entire product in one step. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional image of the in-mold spraying mold of this cover. Figure 1 .

[0017] Figure 2 It is a three-dimensional image of the in-mold spraying mold of this cover. Figure 2 .

[0018] Figure 3 It is a cross-sectional view of the in-mold spraying mold of the cover.

[0019] Figure 4 It is the assembly drawing of the punch and the lifting plate.

[0020] In the figure, 1. base; 2. upper mold base; 3. guide column; 4. upper top plate; 5. upper mounting plate; 6. lifting plate; 7. punch; 8. injection molding die; 9. spraying die; 10. injection molding mounting plate; 11. spraying mounting plate; 12. side plate; 13. slightly opened compression cylinder; 14. overflow groove; 15. sliding plate; 16. translation cylinder; 17. guide plate; 18. side baffle; 19. mounting hole; 20. connecting hole; 21. injection molding runner; 22. spraying joint; 23. spraying runner; 24. ejector plate; 25. ejector rod one; 26. ejector rod two. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-4 As shown, the in-mold spraying mold of the cover comprises a base 1, an upper mold base 2, a guide column 3, an upper top plate 4, an upper mounting plate 5, a lifting plate 6, a punch 7, an injection mold 8, a spraying mold 9, an injection mounting plate 10, and a spraying mounting plate 11. The guide column 3 is fixed on the base 1, the upper mold base 2 is provided with a through hole for the guide column 3 to pass through, the upper mold base 2 slides along the guide column 3, the upper top plate 4 is fixed to the lower end surface of the upper mold base 2, the upper top plate 4 is fixed with side plates 12 on both sides, the upper mounting plate 5 is fixed to the lower end of the side plate 12, and the punch 7 is fixed in the embedded groove of the upper mounting plate 5.

[0023] A slightly opened compression cylinder 13 is fixed on the upper mounting plate 5, and a threaded hole is opened on the telescopic rod of the slightly opened compression cylinder 13. The lifting plate 6 is sleeved outside the punch 7, and a fastening bolt is passed through the lifting plate 6. The fastening bolt is threadedly connected with the threaded hole of the telescopic rod. The injection mold 8 is fixed on the injection mounting plate 10, and the spraying mold 9 is fixed on the spraying mounting plate 11. The injection mold 8 is opened with an injection mold cavity, and the spraying mold 9 is opened with a spraying mold cavity. The lifting plate 6 is opened with an overflow groove 14 connected to the spraying mold cavity;

[0024] The in-mold spraying mold of the cover also includes a sliding mechanism, which includes a sliding plate 15, a translation cylinder 16 and a guide slide plate 17 fixed on the base 1, the guide slide plate 17 slidingly cooperates with the sliding plate 15, the translation cylinder 16 is fixed at one end of the guide slide plate 17, the telescopic rod of the translation cylinder 16 is fixed to one side of the sliding plate 15, and the injection molding mounting plate 10 and the spraying mounting plate 11 are fixed on the sliding plate 15 in sequence.

[0025] L-shaped side baffles 18 are fixed on both sides of the guide slide plate 17, and the sliding plate 15 is embedded between the two side baffles 18. The injection molding installation plate 10 and the spraying installation plate 11 are closely attached together, and the injection molding concave mold 8 and the spraying concave mold 9 are closely attached together.

[0026] A conical mounting hole 19 is formed on the base 1, a connecting hole 20 connected to the mounting hole 19 is formed on the guide plate 17, and an injection flow channel 21 connecting the connecting hole 20 and the injection mold cavity is formed on the sliding plate 15, the injection mounting plate 10, and the injection mold 8.

[0027] A spray joint 22 is connected to the side of the spraying die 9 , and a spraying flow channel 23 connecting the spraying die cavity and the spray joint 22 is opened on the spraying die 9 .

[0028] A feed plate 24 is provided between the two side plates 12, and a limit column is fixed between the upper feed plate 4 and the upper mounting plate 5, and the limit column penetrates the feed plate 24. A plurality of feed rods 1 25 and feed rods 2 26 are fixed on the feed plate 24, and the feed rod 1 25 penetrates the upper mounting plate 5 and the punch 7, and the feed rod 26 penetrates the upper mounting plate 5 and the lifting plate 6. When unloading, the feed plate 24 is driven downward by the unloading cylinder, so that the feed rods 1 25 and the feed rods 2 26 are moved downward together, so that the product is separated from the punch 7 and the lifting plate 6.

[0029] Workflow: The injection molding machine controls the upper mold base 2 to approach the base 1, so that the punch 7 and the injection mold 8 are molded together, and the injection pipe is inserted from the mounting hole 19, passed through the connecting hole 20 and connected with the injection runner 21, and the molten plastic flows into the injection mold cavity. After the injection mold cavity is filled, it is cooled and shaped. After shaping, the mold is opened to move the upper mold base 2 away from the base 1. At this time, the product is firmly embedded in the punch 7, and the sliding mechanism is started. The translation cylinder 16 pulls the sliding plate 15 to pull the spraying mold 9 and the spraying mounting plate 11 to the bottom of the punch 7. The upper mold base 2 is controlled to move down again, and the slightly opened compression cylinder 13 is controlled to extend its telescopic rod for a distance before the mold is closed, so that there is a certain gap between the lifting plate 6 and the upper mounting plate 5, and the lifting plate 6 is against the mold, so that the distance between the punch 7 and the spraying mold 9 is larger. After the paint is filled, the slightly opened compression cylinder 13 is started to shrink the telescopic rod, so that the lifting plate 6 abuts against the upper mounting plate 5, and the upper mold base 2 is controlled to continue to press down. As the punch 7 moves downward to extrude the product and the paint, the excess paint and air are squeezed into the overflow groove 14. The purpose is to prevent the product from generating defects such as bubbles and flow marks during the spraying process in the spray mold cavity, thereby improving the production stability of the product and achieving cost reduction and efficiency improvement.

[0030] 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 in-mold spraying mold for a cover part, comprising a base, an upper mold base, a guide column, an upper top plate, an upper mounting plate, a lifting plate, a male mold, an injection mold, a spraying mold, an injection mounting plate, and a spraying mounting plate, characterized in that: The guide column is fixed on the base, a through hole for the guide column to pass through is opened on the upper mold base, the upper mold base slides along the guide column, the upper top plate is fixed on the lower end surface of the upper mold base, side plates are fixed on both sides of the upper top plate, the upper mounting plate is fixed on the lower end of the side plate, the punch is fixed in the embedding groove of the upper mounting plate, a slightly opened compression cylinder is fixed on the upper mounting plate, the telescopic rod of the slightly opened compression cylinder has a threaded hole, the lifting plate is sleeved outside the punch, the lifting plate is penetrated by a fastening bolt, the fastening bolt is threadedly connected with the threaded hole of the telescopic rod, the injection mold is fixed on the injection mounting plate, the spraying mold is fixed on the spraying mounting plate, the injection mold is opened on the injection mold, the spraying mold is opened on the spraying mold, and the lifting plate is opened with an overflow groove connected to the spraying mold cavity; It also includes a sliding mechanism, which includes a sliding plate, a translation cylinder and a guide slide plate fixed on a base, the guide slide plate slidingly cooperates with the sliding plate, the translation cylinder is fixed at one end of the guide slide plate, the telescopic rod of the translation cylinder is fixed to one side of the sliding plate, and the injection molding mounting plate and the spray mounting plate are fixed on the sliding plate in sequence.

2. The in-mold spraying mold for a cover according to claim 1, characterized in that: L-shaped side baffles are fixed on both sides of the guide slide plate, and the sliding plate is embedded between the two side baffles.

3. The in-mold spraying mold for a cover according to claim 1, characterized in that: The injection molding installation plate and the spraying installation plate are tightly together, and the injection molding concave mold and the spraying concave mold are tightly together.

4. The in-mold spraying mold for a cover according to claim 1, characterized in that: A conical mounting hole is opened on the base, a connecting hole connected to the mounting hole is opened on the guide plate, and an injection flow channel connected to the connecting hole and the injection mold cavity is opened on the sliding plate, the injection mounting plate and the injection concave mold.

5. The in-mold spraying mold for a cover according to claim 1, characterized in that: The side of the spraying concave mold is connected with a spraying joint, and the spraying concave mold is provided with a spraying flow channel which connects the spraying mold cavity and the spraying joint.

6. The in-mold spraying mold for a cover according to claim 1, characterized in that: A ejector plate is provided between the two side plates, and a limiting column is fixed between the upper ejector plate and the upper mounting plate. The limiting column passes through the ejector plate, and a plurality of ejector rods 1 and 2 are fixed on the ejector plate. The ejector rod 1 passes through the upper mounting plate and the punch, and the ejector rod 2 passes through the upper mounting plate and the lifting plate.

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