Injection mold with multi-sliding-block structure

Abstract

The utility model discloses an injection mold with a multi-slider structure, which comprises a front bottom plate and a transition plate, the transition plate is mounted on one side of the front bottom plate, a front mold frame is mounted on one side of the transition plate, a rear mold frame is mounted on one side of the front mold frame, and two groups of support plates are mounted on one side of the rear mold frame. A rear bottom plate is arranged outside the rear mold frame and connected with the supporting plate, a fixed plate is installed on one side of the rear bottom plate, a movable plate is arranged on one side of the fixed plate, and an ejection air cylinder is installed on the side wall of the movable plate and fixedly connected with the movable plate. According to the utility model, not only can the two-section type inclined top be conveniently separated from the injection molding part and the injection molding part product be conveniently ejected in a linkage manner, the reverse buckle of the injection molding part can be conveniently separated from two directions, the injection molding part is prevented from being damaged in the separation process, but also the flexibility of separating from the reverse buckle of the injection molding part and the convenience of outputting the injection molding part are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly relates to an injection mold with a multi-slider structure. Background Technique

[0002] An injection mold is a common manufacturing tool mainly used for manufacturing plastic injection molding products. It consists of a high-precision mold and a mold bracket and is used to manufacture plastic products of various shapes and sizes, such as plastic cups, plastic plates, plastic toys, auto parts, etc. In the injection molding process, the mold is filled with molten plastic and then solidified through a cooling process to form the required plastic products. Injection molds play a crucial role in modern manufacturing. After the plastic part is injection molded, there will be a bevel edge or a chamfer position at the edge, which has a moving arc. After injection molding, the mold needs to be withdrawn so that the injection molded part will fall off. In order to better output the injection molded part, an injection mold with a multi-slider structure is proposed.

[0003] As disclosed in an injection mold with a slider structure with the authorization announcement number CN211105315U, it includes a slider seat, a spring, a shifting block, a cover plate, an inclined pin, a mold slider, a mold part, and a pre-installed metal part. A placement groove is provided on the slider seat, grooves are provided on both sides of the slider seat, an installation groove is provided inside the slider seat, the installation groove is located inside the slider seat, the spring is located inside the installation groove, the shifting block is located inside the installation groove, the outer surface of the shifting block is slidably connected to the inner wall of the installation groove, and the cover plate is fixedly connected to one side of the groove by screws;

[0004] Although it achieves the purpose of saving the development cost of the mold, and at the same time the mold is easy to change the production line, it can also save the time for changing the production line, save the injection molding time, and does not require a dedicated machine, so the equipment utilization rate is greatly improved;

[0005] However, it does not solve the problem that the existing injection mold is not conducive to the convenient two-section inclined top to disengage from the injection molded part and the convenient linkage to eject the injection molded part product, and is not conducive to disengaging the undercut of the injection molded part from two directions, which affects the flexibility of disengaging the undercut of the injection molded part and the convenience of outputting the injection molded part. Content of the Utility Model

[0006] The purpose of the utility model is to provide an injection mold with a multi-slider structure to solve the problems proposed in the above background technique that the injection mold is not convenient for the two-section inclined top to disengage from the injection molded part and the convenient linkage to eject the injection molded part product, is not conducive to disengaging the undercut of the injection molded part from two directions, and affects the flexibility of disengaging the undercut of the injection molded part and the convenience of outputting the injection molded part.

[0007] To achieve the above object, the utility model provides the following technical solutions: an injection mold with a multi-slider structure, including a front bottom plate and a transition plate. A transition plate is installed on one side of the front bottom plate, a front mold base is installed on one side of the transition plate, a rear mold base is installed on one side of the front mold base, two support plates are installed on one side of the rear mold base, a rear bottom plate is arranged outside the rear mold base, and the rear bottom plate is connected to the support plates. A fixed plate is installed on one side of the rear bottom plate, a moving plate is arranged on one side of the fixed plate, a top material cylinder is installed on the side wall of the moving plate, and the top material cylinder is fixedly connected to the moving plate. A push arm is installed at the output end of the top material cylinder, and the push arm is fixedly connected to the fixed plate. Two sliding columns are symmetrically installed inside the fixed plate, and the moving plate is slidably connected to the sliding columns. A rear mold core is installed inside the rear mold base, and a top material rod is slidably connected to the rear mold core. A front mold core is installed inside the front mold base, and an injection molded part body is arranged between the rear mold core and the front mold core.

[0008] Preferably, a hydraulic cylinder is installed on the outer wall of the rear mold base, and a push rod is installed at the output end of the hydraulic cylinder.

[0009] Preferably, a large slider is installed at one end of the push rod away from the front bottom plate, and a traveling slider is installed at one end of the large slider away from the push rod. Both the large slider and the traveling slider are slidably connected to the rear mold base.

[0010] Preferably, a small slider is arranged on the side wall of the traveling slider, a spring is installed on the side wall of the small slider close to the traveling slider, and the spring is connected to the traveling slider.

[0011] Preferably, a chute is installed inside the small slider, and a horizontal limiting block is installed on the side wall of the front mold base on one side of the small slider.

[0012] Preferably, an inclined guide post is installed inside the horizontal limiting block, and the inclined guide post is slidably connected to the chute.

[0013] Preferably, a vertical limiting block is arranged on the side wall of the front mold base on one side of the large slider, and a positioning post is installed at the center position of the vertical limiting block.

[0014] Preferably, the vertical limiting block is connected to the front mold base through the positioning post, a main runner is installed on the side wall of the front bottom plate, and the main runner extends into the interior of the front mold core.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: this injection mold not only realizes the convenient two-stage inclined ejection from the injection molded part and the convenient linkage ejection of the injection molded part product, facilitates the release of the undercut of the injection molded part from two directions, avoids damage to the injection molded part during the release process, but also improves the flexibility of releasing the undercut of the injection molded part and the convenience of outputting the injection molded part. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structure schematic diagram of the present utility model;

[0017] Figure 2 is a bottom-up sectional structure schematic diagram of the present utility model;

[0018] Figure 3 is a bottom-up sectional structure schematic diagram of the small slider of the present utility model;

[0019] Figure 4 is a front-view sectional structure schematic diagram of the ejector rod of the present utility model;

[0020] Figure 5 is a three-dimensional structure schematic diagram of the rear mold core of the present utility model.

[0021] In the figure: 1, front bottom plate; 2, transition plate; 3, front mold base; 4, rear mold base; 5, support plate; 6, moving plate; 7, fixed plate; 8, rear bottom plate; 9, ejector cylinder; 10, hydraulic cylinder; 11, push rod; 12, large slider; 13, spring; 14, slide block; 15, injection molded part body; 16, small slider; 17, inclined guide pillar; 18, lateral limit block; 19, vertical limit block; 20, positioning column; 21, push arm; 22, ejector rod; 23, chute; 24, main runner; 25, rear mold core; 26, sliding column; 27, front mold core. Specific embodiments

[0022] To further illustrate the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features and their effects of the present utility model as follows.

[0023] Please refer to Figures 1-5, an embodiment provided by the present utility model: an injection mold with a multi-slider structure, including a front bottom plate 1 and a transition plate 2. A transition plate 2 is installed on one side of the front bottom plate 1. A front mold base 3 is installed on one side of the transition plate 2. A rear mold base 4 is installed on one side of the front mold base 3. Two groups of support plates 5 are installed on one side of the rear mold base 4. A rear bottom plate 8 is arranged outside the rear mold base 4, and the rear bottom plate 8 is connected to the support plates 5. A fixing plate 7 is installed on one side of the rear bottom plate 8. A moving plate 6 is arranged on one side of the fixing plate 7. A knockout cylinder 9 is installed on the side wall of the moving plate 6. The knockout cylinder 9 plays a role in power driving, and the knockout cylinder 9 is fixedly connected to the moving plate 6. The output end of the knockout cylinder 9 is installed with a push arm 21, and the push arm 21 is fixedly connected to the fixing plate 7. Two groups of sliding columns 26 are symmetrically installed inside the fixing plate 7, and the moving plate 6 is slidably connected to the sliding columns 26. A rear mold core 25 is installed inside the rear mold base 4, and a knockout rod 22 is slidably connected to the rear mold core 25. A front mold core 27 is installed inside the front mold base 3, and an injection molded part body 15 is arranged between the rear mold core 25 and the front mold core 27;

[0024] First, connect the mold to an injection molding machine, and at the same time connect it to an external controller and an external circuit. The injection molding raw material is input into the interior of the front mold core 27 through the main runner 24. Under the mutual cooperation of the rear mold core 25 and the front mold core 27, the injection molded part body 15 is injection molded. When it is necessary to output the injection molded part, the injection molding machine drives the front bottom plate 1, the transition plate 2, and the front mold base 3 to move away from the rear mold base 4. The front mold base 3 drives the front mold core 27 to move, so that the front mold core 27 moves away from the injection molded part body 15. At the same time, the front mold core 27 drives the inclined guide post 17 to move through the horizontal limit block 18. The inclined guide post 17 slides inside the chute 23, so that the inclined guide post 17 moves away from the small slider 16. Under the elastic action of the spring 13, the spring 13 drives the small slider 16 to move away from the slider and the injection molded part body 15, so that the small slider 16 is separated from the injection molded part body 15, to disengage the undercut in one direction of the injection molded part. At the same time, the front mold base 3 drives the vertical limit block 19 to move through the positioning post 20, so that the vertical limit block 19 moves away from the large slider 12 and the rear mold base 4, to vacate the space on one side of the large slider 12. Then, open the hydraulic cylinder 10. The hydraulic cylinder 10 drives the push rod 11 to move. The push rod 11 drives the large slider 12 and the slider to move, so that the slider is separated from the injection molded part body 15, thereby disengaging the undercut in the other direction of the injection molded part, and completing the disengagement operation of the undercuts in two directions. It realizes the convenient two-stage inclined ejector to separate the injection molded part, facilitates the disengagement of the undercuts of the injection molded part from two directions, avoids damage to the injection molded part during the separation process, and improves the flexibility of disengaging the undercuts of the injection molded part;

[0025] A hydraulic cylinder 10 is installed on the outer wall of the rear mold base 4. The hydraulic cylinder 10 plays a role in power driving. The output end of the hydraulic cylinder 10 is installed with a push rod 11;

[0026] One end of the push rod 11 away from the front bottom plate 1 is installed with a large slider 12. One end of the large slider 12 away from the push rod 11 is installed with a slide block 14, and both the large slider 12 and the slide block 14 are slidably connected to the rear mold base 4;

[0027] A small slider 16 is arranged on the side wall of the slide block 14. A spring 13 is installed on the side wall of the small slider 16 close to the slide block 14, and the spring 13 is connected to the slide block 14;

[0028] A chute 23 is installed inside the small slider 16. A horizontal limit block 18 is installed on the side wall of the front mold base 3 on one side of the small slider 16. An inclined guide post 17 is installed inside the horizontal limit block 18, and the inclined guide post 17 is slidably connected to the chute 23;

[0029] A vertical limit block 19 is arranged on the side wall of the front mold base 3 on one side of the large slider 12. A positioning post 20 is installed at the center position of the vertical limit block 19. The vertical limit block 19 is connected to the front mold base 3 through the positioning post 20. A main runner 24 is installed on the side wall of the front bottom plate 1, and the main runner 24 extends into the interior of the front mold core 27;

[0030] After the undercut is completely separated, the ejector cylinder 9 is opened. The ejector cylinder 9 drives the push arm 21 to move. Since the push arm 21 is fixedly connected to the fixed plate 7, the push arm 21 does not move and the ejector cylinder 9 moves. Under the sliding cooperation of the moving plate 6 and the sliding column 26, the ejector cylinder 9 drives the moving plate 6 to move and slide on the surface of the sliding column 26. The moving plate 6 drives the ejector rod 22 to move. Under the sliding cooperation of the ejector rod 22 and the rear mold core 25, the ejector rod 22 drives the injection molded part body 15 on the surface of the rear mold core 25 to move, so that the injection molded part body 15 is separated from the rear mold core 25, thereby outputting the injection molded part body 15. After the injection molded part is ejected, the ejector rod 22 resets. The hydraulic cylinder 10 drives the large slider 12 to reset. While the front mold base 3 and the rear mold base 4 are clamped, the inclined guide post 17 drives the small slider 16 to reset, realizing convenient linkage to eject the injection molded part product and improving the convenience of outputting the injection molded part.

[0031] Working principle: First, connect the mold to the injection molding machine, and at the same time connect it to an external controller and an external circuit. The injection molding raw material is input into the interior of the front mold core 27 through the main runner 24. Under the mutual cooperation of the rear mold core 25 and the front mold core 27, an injection molded part body 15 is injection molded. When it is necessary to output the injection molded part, the injection molding machine drives the front bottom plate 1, the transition plate 2, and the front mold base 3 away from the rear mold base 4. The front mold base 3 drives the front mold core 27 to move, so that the front mold core 27 moves away from the injection molded part body 15. At the same time, the front mold core 27 drives the inclined guide post 17 to move through the lateral limiting block 18. The inclined guide post 17 slides inside the chute 23, so that the inclined guide post 17 moves away from the small slider 16. Under the elastic action of the spring 13, the spring 13 drives the small slider 16 to move away from the slide block 14 and the injection molded part body 15, so that the small slider 16 is disengaged from the injection molded part body 15, and the undercut in one direction of the injection molded part is disengaged. At the same time, the front mold base 3 drives the vertical limiting block 19 to move through the positioning post 20, so that the vertical limiting block 19 moves away from the large slider 12 and the rear mold base 4, and the space on one side of the large slider 12 is vacated. Then, the hydraulic cylinder 10 is opened, and the hydraulic cylinder 10 drives the push rod 11 to move. The push rod 11 drives the large slider 12 and the slide block 14 to move, so that the slide block 14 is disengaged from the injection molded part body 15, thereby disengaging the undercut in the other direction of the injection molded part, and completing the operation of disengaging the undercuts in two directions. When the undercuts are disengaged, the ejector cylinder 9 is opened, and the ejector cylinder 9 drives the push arm 21 to move. Since the push arm 21 is fixedly connected to the fixed plate 7, the push arm 21 does not move, and the ejector cylinder 9 moves. Under the sliding fit of the moving plate 6 and the sliding column 26, the ejector cylinder 9 drives the moving plate 6 to slide on the surface of the sliding column 26. The moving plate 6 drives the ejector rod 22 to move. Under the sliding fit of the ejector rod 22 and the rear mold core 25, the ejector rod 22 drives the injection molded part body 15 on the surface of the rear mold core 25 to move, so that the injection molded part body 15 is disengaged from the rear mold core 25, and thus the injection molded part body 15 is output. When the injection molded part is ejected, the ejector rod 22 is reset, and the hydraulic cylinder 10 drives the large slider 12 to reset. While the front mold base 3 and the rear mold base 4 are closed, the inclined guide post 17 drives the small slider 16 to reset, thereby completing the use of the injection mold with a multi-slider structure.

[0032] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An injection mold with a multi-slider structure, comprising a front bottom plate (1) and a transition plate (2), characterized in that: One side of the front bottom plate (1) is provided with a transition plate (2), one side of the transition plate (2) is provided with a front mold base (3), one side of the front mold base (3) is provided with a rear mold base (4), one side of the rear mold base (4) is provided with two groups of support plates (5), the outside of the rear mold base (4) is provided with a rear bottom plate (8), and the rear bottom plate (8) is connected to the support plates (5). One side of the rear bottom plate (8) is provided with a fixing plate (7), one side of the fixing plate (7) is provided with a moving plate (6), a knockout cylinder (9) is installed on the side wall of the moving plate (6), and the knockout cylinder (9) is fixedly connected to the moving plate (6). The output end of the knockout cylinder (9) is provided with a push arm (21), and the push arm (21) is fixedly connected to the fixing plate (7). Two groups of sliding columns (26) are symmetrically installed inside the fixing plate (7), and the moving plate (6) is slidably connected to the sliding columns (26). A rear mold core (25) is installed inside the rear mold base (4), and a knockout rod (22) is slidably connected to the rear mold core (25). A front mold core (27) is installed inside the front mold base (3), and an injection molded part body (15) is arranged between the rear mold core (25) and the front mold core (27).

2. The injection mold with a multi-slider structure according to claim 1, characterized in that: A hydraulic cylinder (10) is installed on the outer wall of the rear mold base (4), and a push rod (11) is installed at the output end of the hydraulic cylinder (10).

3. The injection mold with a multi-slider structure according to claim 2, wherein: One end of the push rod (11) away from the front bottom plate (1) is provided with a large slider (12), and one end of the large slider (12) away from the push rod (11) is provided with a lifter slider (14), and both the large slider (12) and the lifter slider (14) are slidably connected to the rear mold base (4).

4. The injection mold with a multi-slider structure according to claim 3, wherein: A small slider (16) is arranged on the side wall of the lifter slider (14), a spring (13) is installed on the side wall of the small slider (16) close to the lifter slider (14), and the spring (13) is connected to the lifter slider (14).

5. The injection mold with a multi-slider structure according to claim 4, characterized in that: A chute (23) is installed inside the small slider (16), and a transverse limiting block (18) is installed on the side wall of the front mold base (3) on one side of the small slider (16).

6. The injection mold with a multi-slider structure according to claim 5, characterized in that: An inclined guide post (17) is installed inside the transverse limiting block (18), and the inclined guide post (17) is slidably connected to the chute (23).

7. The injection mold with a multi-slider structure according to claim 3, wherein: A vertical limiting block (19) is arranged on the side wall of the front mold base (3) on one side of the large slider (12), and a positioning post (20) is installed at the central position of the vertical limiting block (19).

8. The injection mold with a multi-slider structure according to claim 7, characterized in that: The vertical limiting block (19) is connected to the front mold base (3) through the positioning post (20), and a main runner (24) is installed on the side wall of the front bottom plate (1), and the main runner (24) extends into the inside of the front mold core (27).

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