Lateral ejection demolding mechanism applied to complex injection molded part

Abstract

The utility model relates to the technical field of molds, in particular to a lateral ejection demolding mechanism applied to complex injection molded parts. The injection mold comprises a male mold, a female mold, a cavity arranged in the male mold and the female mold, and an ejection mechanism arranged in the male mold, the ejection mechanism comprises a straight ejection block, a check block and an ejector pin, wherein the top of the straight ejection block is used for ejecting the injection molding part, the side edge of the straight ejection block is attached to the side edge of the injection molding part, the check block penetrates through the female mold, and one end of the ejector pin is used for ejecting the injection molding part, and the other end of the ejector pin is used for ejecting the side edge of the check block. The utility model has the beneficial effects that according to the technical scheme, the transverse ejection is realized by utilizing the characteristics of an injection molding product material and a simple inclination mechanism, and the reverse buckling part of the product is separated from the product from the reverse buckling part of the product by utilizing the elastic deformation of the plastic product to realize the demolding, so that the demolding of a complex product is realized; therefore, the efficiency is improved, and the time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a lateral ejection demoulding mechanism applied to complex injection molded parts. Background Art

[0002] This modular plastic mold is used for compression molding, extrusion molding, injection molding, blow molding, and low-foaming molding. It primarily comprises a female mold with a variable cavity, consisting of a female mold assembly base plate, a female mold assembly, and a female mold assembly clamping plate; and a male mold with a variable core, consisting of a male mold assembly base plate, a male mold assembly, a male mold assembly clamping plate, a cavity truncation assembly, and a side truncation assembly. The mold's male and female molds, along with the auxiliary molding system, can be coordinated to produce a range of plastic parts of varying shapes and sizes.

[0003] Existing technology, application number: CN201922239394.7 A lateral undercut demoulding mechanism for an injection mold, which can demould the product by lateral undercut, reference Figure 1 As shown, it is an existing injection molded part. Due to the complexity of its shape, the existing demoulding mechanism cannot be processed and formed in one go. To complete the demoulding, the male mold core needs to be split into two parts, upper and lower, for processing and production, and two ejection methods are required to achieve demoulding, which is time-consuming, labor-intensive, and inefficient.

[0004] Therefore, it is necessary to design a side ejection demoulding mechanism for complex injection molded parts to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a lateral ejection demoulding mechanism for complex injection molded parts, so as to overcome the above-mentioned deficiencies in the current prior art.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The mold pressing part is pressed against the mold base, and the mold base is pressed against the mold base, and the mold base is pressed against the mold base, and the mold base is pressed against the mold base.

[0008] Preferably, the top of the straight ejector block is fitted with the portion in contact with the injection molded part, and is fitted with the portion in contact with the injection molded part, and the other side is fitted with the side of the mother mold.

[0009] Preferably, a sliding space and a contoured groove for mounting a stopper are provided in the female mold, the stopper is placed in the contoured groove space, and the ejector pin is placed in the sliding space.

[0010] Preferably, the ejector pin is arranged horizontally and perpendicularly to the stop block, and the ejector pin passes through the straight ejector block and can move horizontally left and right with the through hole as the axis.

[0011] The beneficial effects of the present invention are as follows: the present technical solution utilizes the characteristics of the injection molded product material and a simple slope mechanism to achieve lateral ejection, and changes the undercut part of the product from being separated from the product by the normal mold mechanism movement to utilizing the elastic deformation of the plastic product itself to achieve demoulding, thereby realizing the demoulding of complex products and completing the processing in one go, thereby improving efficiency and saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Product structure diagram;

[0013] Figure 2 This is a mold closing diagram of a side ejection demoulding mechanism used for complex injection molded parts in the utility model;

[0014] Figure 3 This is a partial mold opening diagram of a side ejection demoulding mechanism for complex injection molded parts in the utility model;

[0015] Figure 4 This is a partial enlarged view of a side ejection demoulding mechanism used for complex injection molded parts in the utility model;

[0016] In the figure: 1, male mold; 2, female mold; 3, cavity; 11, boss; 4, straight ejector; 5, stopper; 6, ejector pin; 7, sliding space; 8, contour groove; 9, boss bar. DETAILED DESCRIPTION

[0017] Reference Figures 1 to 3 A side ejection demoulding mechanism for complex injection molded parts, comprising a male mold 1, a female mold 2, a cavity 3 disposed in the male and female molds, and an ejection mechanism 4 disposed in the male mold;

[0018] refer to Figure 1As shown, due to the special structure of the product, the male mold is L-shaped, and the inner surface of the male mold that contacts the cavity is configured to conform to the outer shape of the injection molded part. The inner surface of the male mold and the injection molded part are configured to conform to each other in an arc shape. In order to limit the position of the injection molded part, a boss 11 for limiting the position of the injection molded part is provided at the top of the inner surface of the male mold.

[0019] The ejection mechanism includes a straight ejector block 4 provided on the top for supporting the molded part and with its side attached to the side of the molded part, a stopper 5 provided through the mother mold, and an ejector pin 6 provided with one end for supporting the molded part and the other end for supporting the side of the stopper;

[0020] The top of the straight ejector block is fitted in contact with the portion of the molded part, and is also fitted with the portion in contact with the molded part. The other side is fitted with the side of the mother mold, thereby limiting the position of the straight ejector block on both sides, limiting its position on the left and right sides to ensure its upward movement. In order to match the special structure of the molded part and ensure a successful one-time injection, a convex block bar 9 is provided on the side of the straight ejector block that contacts the cavity and is connected to the cavity. The convex block bar is used to match the undercut portion of the molded part for installation.

[0021] In order to provide space for the stopper and the ejector pin to move, a sliding space 7 and a contoured groove 8 for the stopper are provided in the female mold;

[0022] The stopper is placed in the contoured groove space, and the ejector pin is placed in the sliding space;

[0023] The stopper and the ejector pin are arranged at an angle, and the stopper is inclined from bottom to top, and the width of the stopper becomes larger and larger; the ejector pin is arranged horizontally and perpendicularly to the stopper, and the ejector pin penetrates the straight ejector block and moves horizontally left and right with the through hole as the axis;

[0024] This implementation case, refer to Figure 2 At this time, it is the injection mold closing state. When the mold needs to be opened after the injection molding is completed, the male and female molds are separated first, and the product begins to be ejected. While the straight ejector block moves upward to push the product upward, the ejector pin moves to the left under the action of the inclined surface on the block, causing the side of the product to follow the left movement. The product undercut gradually separates from the straight ejector block and continues to be ejected until the product undercut is completely separated from the straight ejector. At this time, the product can be taken out. After the product is taken out, the mold can be closed for the next cycle of production.

[0025] The benefits of the present invention are that the present technical solution utilizes the characteristics of the injection molded product material and a simple slope mechanism to achieve lateral ejection, and changes the normal mold mechanism movement to separate the undercut part from the product, and changes it to utilizing the elastic deformation of the plastic product itself to achieve demoulding, thereby realizing the demoulding of complex products and completing the processing in one go, thereby improving efficiency and saving time.

[0026] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lateral ejection demoulding mechanism for complex injection molded parts, comprising a male mold, a female mold, a cavity disposed within the male and female molds, and an ejection mechanism disposed within the male mold, characterized in that: The male mold is set in an L-shape, and the inner surface of the male mold that contacts the cavity is configured to imitate the shape of the injection molded part. The inner surface of the male mold and the injection molded part are configured to be arc-shaped. A boss is provided at the top of the inner surface of the male mold to limit the position of the injection molded part. The ejection mechanism includes a straight ejector block with a top for holding the injection molded part and a side attached to the side of the injection molded part, a stopper passed through the female mold, and an ejector pin with one end for holding the injection molded part and the other end for holding the side of the stopper. A convex horizontal bar connected to the cavity is provided on the side of the straight ejector block in contact with the cavity. The contact between the stopper and the ejector pin is tilted at an angle, and the tilt from bottom to top increases. The wider the stopper, the wider the stopper.

2. The side ejection demoulding mechanism for complex injection molded parts according to claim 1, characterized in that: The top of the straight ejector block is embedded in the portion in contact with the injection molded part, and is also fitted with the portion in contact with the injection molded part, and the other side is fitted with the side of the mother mold.

3. The side ejection demoulding mechanism for complex injection molded parts according to claim 1, characterized in that: A sliding space and a contoured groove for matching a stopper are provided in the female mold. The stopper is placed in the contoured groove space, and the ejector pin is placed in the sliding space.

4. The side ejection demoulding mechanism for complex injection molded parts according to claim 1, characterized in that: The ejector pin is arranged horizontally and perpendicularly to the stop block, and the ejector pin passes through the straight ejector block and can move horizontally left and right with the through hole as the axis.

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