Bottom shell injection mold convenient to demold

Abstract

The utility model provides a bottom shell injection mold convenient to demold, which comprises a lower mold, an upper mold is movably mounted on the lower mold, supporting seats are fixed at the bottom of the lower mold, a movable seat is movably mounted between the supporting seats, a limiting plate is movably mounted at the bottom of the lower mold, a cavity is formed in the movable seat, and the lower mold is fixed on the upper mold. A cavity is formed in the lower die, a movable plate is movably installed in the cavity, a movable column is fixed to one end of the movable plate, a sliding groove and a limiting groove are formed in the bottom of the lower die, and a tension mechanism is fixedly installed in the sliding groove. According to the bottom shell injection mold convenient to demold, when the bottom shell injection mold convenient to demold is used, the limiting plates are moved towards the two sides, after the limiting plates move towards the two sides, the positions of the open holes are exposed in air, the lower mold is rapidly cooled through cooperation of external air and the open holes, and the heat dissipation speed can be controlled through the number of the exposed open holes.

Description

Technical Field

[0001] This utility model relates to the field of injection mold equipment, specifically to an injection mold for a convenient demolding bottom shell. Background Technology

[0002] When producing workpieces, injection molds are often used. The workers first snap the upper mold and the lower mold together. After the upper mold and the lower mold are snapped together, they form a mold cavity. The workers inject the raw material into the mold cavity from the injection port. After the raw material cools down, the workpiece is formed. After molding, the upper mold and the lower mold are separated. The workpiece needs to be taken out of the lower mold. However, because the workpiece is attached to the lower mold, it is not convenient for the workers to remove the workpiece.

[0003] According to a patent document with publication number CN219381457U, an injection mold for easy demolding includes an upper mold, a lower mold with a clearance fit on the lower outer wall of the upper mold, a bottom of the lower mold fixedly connected to the top of a housing, a bottom of the housing fixedly connected to the top of a base plate, a bottom side of the inner wall of the housing fixedly connected to the bottom of a vertical rod, a top outer wall of the vertical rod with a clearance fit on the bottom inner wall of a vertical cylinder, and a top of the vertical cylinder fixedly connected to a bottom side of a push plate. In use, pressing down on a rotating rod moves a circular block upwards, which in turn moves the vertical cylinder upwards, which in turn moves the push plate upwards, thus ejecting the workpiece for easy demolding. However, while this solution achieves workpiece demolding, it does not allow for adjustment of the heat dissipation rate of the lower mold during use, causing inconvenience. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a convenient demolding bottom shell injection mold to solve the problems mentioned in the background art. This utility model has a novel structure. In use, the limiting plate is moved to both sides. After the limiting plate is moved to both sides, the opening position is exposed to the air. The external air and the opening cooperate to achieve rapid cooling of the lower mold. The amount of air leaking out through the opening can control the heat dissipation rate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a convenient demolding bottom shell injection mold, comprising a lower mold, an upper mold movably mounted on the lower mold, a support base fixed to the bottom of the lower mold, a movable seat movably mounted between the support bases, a limiting plate movably mounted on the bottom of the lower mold, a cavity inside the movable seat, a movable plate movably mounted inside the cavity, a movable column fixed to one end of the movable plate, a sliding groove and a limiting groove respectively opened on the bottom of the lower mold, and a tension mechanism fixedly mounted inside the sliding groove.

[0006] Furthermore, one end of the tension mechanism is fixed with a slider, one end of the slider is fixed to the movable seat, the slider has a mounting hole, the mounting hole is connected to the cavity, and the movable column is movably installed inside the mounting hole.

[0007] Furthermore, the lower mold has a positioning hole and a forming cavity, and the upper mold is equipped with a positioning post, one end of which is movably installed inside the positioning hole.

[0008] Furthermore, a connecting seat is movably installed inside the molding cavity, and a connecting hole is opened at the bottom of the molding cavity, which cooperates with the movable column.

[0009] Furthermore, a support mechanism is fixed inside the limiting groove, a limiting block is fixed at one end of the support mechanism, one end of the limiting block is fixed to the limiting plate, and an opening is formed on the lower mold.

[0010] Furthermore, a groove is formed on the inner wall of the cavity, and a protrusion is movably installed inside the groove, with one end of the protrusion fixed to the movable plate.

[0011] Furthermore, a reset mechanism is fixed inside the groove, with one end of the reset mechanism fixed to the protrusion.

[0012] Furthermore, fixing blocks are fixed to the sides of both the upper and lower molds, a rubber plate is fixed to the inner wall of the limiting plate, the rubber plate is matched with the opening, and an injection port is installed on the upper mold.

[0013] The beneficial effects of this utility model are:

[0014] 1. This easy-to-demold bottom shell injection mold, when in use, the limiting plate is moved to both sides. After the limiting plate is moved to both sides, the opening position is exposed to the air. The external air cooperates with the opening to achieve rapid cooling of the lower mold. The amount of air leaking out through the opening can control the heat dissipation rate.

[0015] 2. In this easy-to-demold bottom shell injection mold, the movement of the limiting plate loses its limiting effect on the movable seat. After the movable seat loses its supporting force, it moves to the center position of the lower mold. The movable column enters the connecting hole and pushes the connecting seat upward through the movable column. After being pushed up, it is convenient for the workpiece to be separated from the inner wall of the molding cavity in the later stage, which facilitates the demolding in the later stage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the convenient demolding bottom shell injection mold of this utility model;

[0017] Figure 2 This is a schematic diagram of the bottom structure of the lower mold of the convenient demolding bottom shell injection mold of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the injection mold for easy demolding of the bottom shell after the limiting plate is removed;

[0019] Figure 4 This is a side cross-sectional view of the lower mold of the convenient demolding bottom shell injection mold of this utility model;

[0020] In the diagram: 1. Lower mold; 2. Upper mold; 3. Positioning pin; 4. Injection port; 5. Support base; 6. Movable base; 7. Limiting plate; 8. Fixing block; 9. Cavity; 10. Movable plate; 11. Slide groove; 12. Limiting block; 13. Limiting groove; 14. Support mechanism; 15. Tension mechanism; 16. Slider; 17. Opening; 18. Mounting hole; 19. Positioning hole; 20. Molding cavity; 21. Connecting base; 22. Movable pin; 23. Groove; 24. Reset mechanism; 25. Protrusion; 26. Connecting hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 4 This utility model provides a technical solution: a convenient demolding bottom shell injection mold, including a lower mold 1, an upper mold 2 movably mounted on the lower mold 1, a support base 5 fixed at the bottom of the lower mold 1, a movable seat 6 movably mounted between the support bases 5, a limiting plate 7 movably mounted at the bottom of the lower mold 1, a cavity 9 inside the movable seat 6, a movable plate 10 movably mounted inside the cavity 9, a movable column 22 fixed at one end of the movable plate 10, a sliding groove 11 and a limiting groove 13 respectively opened at the bottom of the lower mold 1, a tension mechanism 15 fixedly mounted inside the sliding groove 11, a slider 16 fixed at one end of the tension mechanism 15, one end of the slider 16 fixed on the movable seat 6, a mounting hole 18 opened on the slider 16, the mounting hole 18 connected to the cavity 9, the movable column 22 movably mounted inside the mounting hole 18, the tension mechanism 15 is a tension spring, the tension spring drives the movable seat 6 to move to the center position of the lower mold 1 for return.

[0023] In this embodiment, the lower mold 1 has a positioning hole 19 and a forming cavity 20. The upper mold 2 is equipped with a positioning post 3, one end of which is movably installed inside the positioning hole 19. The forming cavity 20 is movably installed with a connecting seat 21 inside. The bottom of the forming cavity 20 has a connecting hole 26, which cooperates with the movable post 22. The limiting groove 13 has a support mechanism 14 fixed inside. One end of the support mechanism 14 is fixed with a limiting block 12, and one end of the limiting block 12 is fixed with a limiting plate 7. The lower mold 1 has an opening 17. The support mechanism 14 is a support spring. The support spring pushes the limiting plate 7 of the limiting block 12 to move inward to cover and insulate the opening 17 and the sliding groove 11.

[0024] In this embodiment, a groove 23 is formed on the inner wall of the cavity 9, and a protrusion 25 is movably installed inside the groove 23. One end of the protrusion 25 is fixed to the movable plate 10. A reset mechanism 24 is fixed inside the groove 23, and one end of the reset mechanism 24 is fixed to the protrusion 25. Fixing blocks 8 are fixed on the sides of both the upper mold 2 and the lower mold 1. A rubber plate is fixed on the inner wall of the limiting plate 7. The rubber plate cooperates with the opening 17. An injection port 4 is installed on the upper mold 2. The reset mechanism 24 is a reset spring. The reset spring pushes the movable column 22 to move upward and push the connecting seat 21.

[0025] In use, the upper mold 2 is installed on the lower mold 1, and the material is injected into the molding cavity 20 through the injection port 4. After the workpiece inside the molding cavity 20 is formed, the limiting plate 7 is pulled outward. At the same time as the limiting plate 7 is pulled outward, the position of the opening 17 is exposed to the air. The external airflow and the opening 17 cooperate to facilitate the rapid reduction of the temperature inside the molding cavity 20. During the cooling process, the limiting plate 7 loses its restriction on the movable seat 6, and the slider 16 on the movable seat 6 moves under the pull of the pulling mechanism 15. At the center of the slide 11, as the slider 16 moves, the movable column 22 inside the mounting hole 18 enters the interior of the connecting hole 26. The reset mechanism 24 drives the protrusion 25 and the movable plate 10 to move upward. When the movable plate 10 moves upward, the movable column 22 lifts the connecting seat 21. After being lifted, the workpiece inside the forming cavity 20 becomes loose. After being loosened, the upper mold 2 is removed. After the upper mold 2 is removed, the movable column 22 pushes the connecting seat 21 and the workpiece upward from the interior of the forming cavity 20. After being pushed out, it is convenient for later removal and use.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A convenient demolding bottom shell injection mold, including a lower mold (1), characterized in that: An upper mold (2) is movably mounted on the lower mold (1). A support base (5) is fixed at the bottom of the lower mold (1). A movable seat (6) is movably mounted between the support bases (5). A limiting plate (7) is movably mounted at the bottom of the lower mold (1). A cavity (9) is opened inside the movable seat (6). A movable plate (10) is movably mounted inside the cavity (9). A movable column (22) is fixed at one end of the movable plate (10). A sliding groove (11) and a limiting groove (13) are opened at the bottom of the lower mold (1). A tension mechanism (15) is fixedly installed inside the sliding groove (11).

2. The easy-to-demold bottom shell injection mold according to claim 1, characterized in that: One end of the tension mechanism (15) is fixed with a slider (16), one end of the slider (16) is fixed on the movable seat (6), the slider (16) has a mounting hole (18), the mounting hole (18) is connected to the cavity (9), and the movable column (22) is movably installed inside the mounting hole (18).

3. The easy-to-demold bottom shell injection mold according to claim 1, characterized in that: The lower mold (1) has a positioning hole (19) and a forming cavity (20), and the upper mold (2) is equipped with a positioning post (3), one end of which is movably installed inside the positioning hole (19).

4. The easy-to-demold bottom shell injection mold according to claim 3, characterized in that: A connecting seat (21) is movably installed inside the molding cavity (20), and a connecting hole (26) is opened at the bottom of the molding cavity (20), which cooperates with the movable column (22).

5. The easy-to-demold bottom shell injection mold according to claim 1, characterized in that: The limiting groove (13) is fixed with a support mechanism (14), one end of the support mechanism (14) is fixed with a limiting block (12), one end of the limiting block (12) is fixed on the limiting plate (7), and the lower mold (1) has an opening (17).

6. The easy-to-demold bottom shell injection mold according to claim 1, characterized in that: The cavity (9) has a groove (23) on its inner wall, and a protrusion (25) is movably installed inside the groove (23). One end of the protrusion (25) is fixed to the movable plate (10).

7. The easy-to-demold bottom shell injection mold according to claim 6, characterized in that: A reset mechanism (24) is fixed inside the groove (23), and one end of the reset mechanism (24) is fixed on the protrusion (25).

8. The easy-to-demold bottom shell injection mold according to claim 1, characterized in that: The upper mold (2) and the lower mold (1) are both fixed with fixing blocks (8), the inner wall of the limiting plate (7) is fixed with a rubber plate, the rubber plate is matched with the opening (17), and the upper mold (2) is equipped with a filling port (4).

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