RU195675U1 - Injection molding mold - Google Patents

Abstract

A utility model relates to technological equipment for the manufacture of injection molded products. The technical problem solved by the proposed utility model is the creation of a simple-to-mold injection molding mold, which ensures its easy assembly and disassembly. The technical result of the proposed utility model is to simplify the design of the injection molding mold. To achieve the specified technical result, the injection molding mold contains a sprue plate (4), an upper half matrix (1), a lower half matrix (3), a first forming sign (13), and a second forming sign (14). In the sprue plate (4), the upper half-matrix (1) and the lower half-matrix (3), a figured sprue (5) is made. The upper and lower half-matrixes (1), (3) form a forming socket (8), with the upper half-matrix (1) being rigidly fixed on the guide columns (2), and the lower half-matrix (3) and the sprue plate (4) are removable. Forming signs (13), (14) are located perpendicular to each other and are set with their protrusions (15), (16) in the grooves (9), (10), (11), (12) of the inner sides of the half-matrixes (1), ( 3). 1 s.p. f-ly, 6 ill.

Description

The utility model relates to technological equipment for the manufacture of injection molded products.

The well-known "Mold for injection molding" [RU2351472 published 10.04.2009 IPC ВСС 45/02 (2006.01)], containing a matrix, loading chamber, punch and gate channels connecting the die cavity with the loading chamber. A circular plate with axial displacements of material in the central part from the punch and from the side of the sprue channels is mounted axially movable between the punch and the sprue channels in the loading chamber, and through holes are made in the plate in the material sampling zone uniformly located over the plate area.

The closest in technical essence is a removable injection molding mold known from the source ["Processing tool in mechanical engineering": textbook / S.S. Klimenkov. - Minsk: New knowledge; M .: INFRA-M, 2013., pages 298-299, Fig. 5.3b]. The mold contains a pressing chamber, including a housing and a piston, a sprue plate, two sign holders designed for fastening signs and fittings, a matrix, a removable plate, and guide columns. Based on the first character holder, in which the guide columns are installed. A removable plate, a matrix with an inlet sprue, a second sign holder, a sprue plate with a main sprue and a sign fixed by the sign holders are successively installed on the guide columns.

The disadvantage of these solutions is the design complexity.

The technical problem to be solved by the proposed utility model is the creation of a simple mold design of injection molding, providing its easy assembly and disassembly.

The technical result of the proposed utility model is to simplify the design of the injection molding mold.

The essence of the proposed injection molding mold is that it contains a sprue plate, a die with a forming sign and a sprue mounted on the guide columns.

What is new is that the second forming sign is additionally introduced, the matrix is detachable from two half-matrixes forming the forming socket, the upper half-matrix is rigidly fixed to the guide columns, the lower half-matrix and the gating plate are removable, and on the sides of the upper and lower half-gates and the sprue plates are made recesses. In addition, the sprue is made shaped with thinning at the junction of the sprue plate and the upper half-matrix, and the forming marks are located perpendicular to each other and are set with their protrusions in the grooves of the inner sides of the half-matrixes. The protrusions of the forming signs are cylindrical.

In FIG. 1 is a top cutaway view of an injection molding mold.

In FIG. 2 shows a section AA of an injection molding mold with a local section.

In FIG. 3 shows a section BB of the injection molding mold.

In FIG. 4 shows a section B-B of an injection molding mold.

In FIG. 5 shows a general view of the forming sign.

In FIG. 6 shows the finished product.

The injection molding mold contains an upper half-matrix (1) into which guide columns (2) are protruded, protruding on both sides thereof. The lower half-matrix (3) is covered with holes (18) on the bottom of the guide columns (2), and the sprue plate (4) and holes (19) on top. In the sprue plate (4), the upper half-matrix (1) and the lower half-matrix (3), a figured sprue (5) is made. In the upper and lower half-matrices (1) and (3), understatements (6) and (7) are made, which, when closing the half-matrices (1), (3), form the nest (8). Also, grooves (9), (10) are made in the upper half-matrix (1), and grooves (11), (12) are made in the lower half-matrix (4). Between the upper and lower half-matrices (1) and (3), two forming signs (13) and (14) are installed perpendicular to each other. The cylindrical protrusions (15), (16) of the forming signs (13), (14), respectively, are installed in the grooves (9), (10), (11), (12) of the half-matrices (1), (3). On the sides of the upper and lower half-matrices (1) and (3) and the sprue plate (4), recesses (17) are made.

The use of injection molding molds is demonstrated by the example of manufacturing a handle (toggle switch).

Reinforcement (20) is put on the forming sign (13), which subsequently remains inside the handle (21). The forming sign (14) is installed in the hole (22) of the valve (20). Next, the forming signs (13) and (14) are installed on the lower half-matrix (3). In this case, the protrusions (15), (16) of the forming signs (13), (14) go into the grooves (11), (12) of the lower half-matrix (3). Then the upper half-matrix (1) is combined with the lower half-matrix (3), and inserted into the guide columns (2) pressed into it into the holes (18) of the lower half-matrix (3). In this case, the protrusions (15), (16) of the forming signs (13), (14) go into the grooves (9), (10) of the upper half-matrix (1). When closing the semi-matrices (1), (3), understatements (6), (7) form a forming nest (8). Then, on the guide columns (2), a sprue plate (4) is put on with holes (19).

After assembly, molten material, for example, phenolic plastic, is fed into the mold through the sprue plate (4). The material flows through the sprue (5) into the forming slot (8). The material is held in the mold for the required time before solidification, and then the mold is disassembled in the reverse order. On the sides of the upper and lower half-matrices (1), (3) and the sprue plate (4), recesses (17) are made to facilitate disassembly, for example, using a screwdriver or special devices. Performing a sprue (5) figured with thinning at the junction of the sprue plate (4) and the upper half-matrix (1) facilitates the rupture of the hardened material at this point when disassembling the mold.

Thus, the simplicity of the design of the injection molding mold is achieved, which ensures its easy assembly and disassembly during operation.

Claims (2)

1. Injection molding mold comprising a sprue plate mounted on guide columns, a die with a forming sign and a sprue, characterized in that the second forming sign is additionally introduced, the die is detachable from two half-matrixes forming a forming socket, the upper half-matrix is rigidly fixed to the guides columns, the lower half-matrix and the sprue plate are installed with the possibility of removal, and recesses are made on the sides of the upper and lower half-matrices and the sprue plate, in addition, the sprue is made igurnym thinning at the joint between the sprue plate and the upper jaws and forming marks are arranged perpendicularly relative to each other and are mounted with their projections into the slots the inner sides of jaws. 2. The injection molding mold according to claim 1, characterized in that the protrusions of the forming marks are cylindrical.

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