Injection mold for batch production

Abstract

The utility model relates to an injection mold for batch production, which comprises an upper mold frame, a lower mold frame, a needle feeding plate and a partition piece, the upper mold frame is provided with an upper cavity distributed linearly, the lower mold frame is provided with a lower cavity corresponding to the upper cavity, the lower mold frame is slidably connected with the needle feeding plate for demolding, the upper mold frame is provided with a linear groove penetrating through the upper cavity, and the partition piece is arranged in the linear groove. Partition pieces distributed with the lower cavity in a spaced mode are connected to the lower die frame in a clamped mode, the partition pieces are provided with protruding parts matched with the linear grooves, and the partition pieces abut against the linear grooves through the protruding parts. The utility model mainly aims to change the original structural part for separating the die cavity of the lower die frame into a plurality of independent separating pieces, so that sufficient feeding space is reserved for processing the lower cavity, the structure of the lower die frame is simplified, a processing center with a tool changing function does not need to be adopted, and the processing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for batch production. Background Art

[0002] Injection molds are usually composed of an upper and lower mold frame. During injection molding, the mold is clamped on the injection molding machine, the molten plastic is injected into the molding cavity, and cooled and shaped in the cavity. Then the upper and lower molds are separated, and the plastic parts are ejected from the mold cavity through the ejection system. When making molds for mass production of small accessories, due to the complex structure of small accessories and the small gaps in some structures are too small to pass through milling cutters with larger diameters, tool changes are often required when processing the mold, which makes the mold manufacturing cost high and the processing difficult. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the technical solution adopted by the utility model is: an injection mold for mass production, including an upper mold frame, a lower mold frame, a needle feeding plate and a partition piece, the upper mold frame is provided with an upper cavity distributed in a straight line, the lower mold frame is provided with a lower cavity corresponding to the upper cavity, the lower mold frame is slidably connected with a needle feeding plate for demoulding, the upper mold frame is provided with a straight groove running through the upper cavity, the lower mold frame is clamped with a partition piece distributed at intervals with the lower cavity, the partition piece is provided with a protrusion adapted to the straight groove, and the partition piece is abutted against the straight groove through the protrusion.

[0004] By adopting the above technical scheme, the structural part of the lower mold frame originally used to partition the mold cavity is changed into a number of independent partition parts, leaving sufficient tool space for processing the lower cavity, simplifying the structure of the lower mold frame, eliminating the need to use a machining center with a tool changing function, reducing processing costs, and simplifying the structure of the lower mold frame. When the mold is closed, the upper cavity, the lower cavity and the partition parts on the adjacent two sides form a mold cavity for injection molding. When residual material appears between adjacent injection molded parts, that is, there is a gap between the partition parts and the linear groove, it can be repaired by simply adjusting or replacing the partition parts, thereby reducing the maintenance cost of the mold.

[0005] The utility model is further configured that the lower mold frame is provided with a rectangular groove for connecting the partition piece, the lower mold cavity is provided with a molding hole for forming a mounting column of the injection molded part, and the rectangular groove and the molding hole are distributed at intervals.

[0006] Furthermore, the lower mold frame is slidably connected to a push rod in the molding hole, and the push rod is fixedly connected to the needle feeding plate.

[0007] Furthermore, first semicircular grooves for forming a rotating shaft structure of the injection molded part are provided on both sides of the protruding portion, and a second semicircular groove corresponding to the first semicircular groove is provided in the upper cavity.

[0008] By adopting the above technical scheme, the injection molded part forms a mounting column and its inner hole structure through the molding hole and the ejector rod, and forms a rotating shaft structure through the combination of the first semicircular groove and the second semicircular groove. After the injection molding is finalized, the injection molding machine pushes the needle feeding plate and demolds the injection molded part through the ejector rod. The overall structure is simple and the design is reasonable.

[0009] The utility model is further configured that the lower mold frame is provided with a positioning block, and the upper mold frame is provided with a positioning groove corresponding to the positioning block.

[0010] By adopting the above technical solution, positioning blocks are arranged at the four corners of the lower mold frame to avoid misalignment between the upper cavity and the lower cavity when the mold is closed, thereby improving the accuracy of mold matching.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The original structural part of the lower mold frame used to partition the mold cavity is changed into several independent partition parts, leaving sufficient tool space for machining the lower cavity, simplifying the structure of the lower mold frame, eliminating the need to use a machining center with tool changing function, and reducing machining costs;

[0013] 2. Simplify the structure of the lower mold frame. When there is a gap between the partition and the linear groove, it can be repaired by simply adjusting or replacing the partition, reducing the maintenance cost of the mold.

[0014] The embodiments of the utility model are further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the upper mold frame of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the lower mold frame of the utility model;

[0018] Figure 4 For the utility model Figure 2 A partial enlarged view of the A-direction view;

[0019] Figure 5 For the utility model Figure 3 A partial enlarged view of the B direction view;

[0020] Figure 6 For the utility model Figure 5 A schematic diagram of the structure without partitions and top rods;

[0021] Figure 7 It is a three-dimensional diagram of the injection molded part of the utility model;

[0022] Among them: 1-upper mold frame, 2-lower mold frame, 3-needle feeding plate, 4-partition piece, 5-elevator, 11-upper cavity, 12-linear groove, 13-second semicircular groove, 14-positioning groove, 21-lower cavity, 22-rectangular groove, 23-molding hole, 24-positioning block, 41-protrusion, 42-first semicircular groove, 6-injection molded part, 61-mounting column structure, 62-inner hole structure, 63-rotating shaft structure; DETAILED DESCRIPTION

[0023] like Figure 1-3 As shown, this embodiment provides a first embodiment of an injection mold for mass production of the utility model, including an upper mold frame 1, a lower mold frame 2, a needle feeding plate 3 and a partition piece 4, the upper mold frame 1 is provided with an upper cavity 11 distributed in a straight line, the lower mold frame 2 is provided with a lower cavity 21 corresponding to the upper cavity 11, the lower mold frame 2 is slidably connected with the needle feeding plate 3 for demoulding, the upper mold frame 1 is provided with a straight groove 12 passing through the upper cavity 11, the lower mold frame 2 is clamped with a partition piece 4 spaced apart from the lower cavity 21, the partition piece 4 is provided with a protrusion 41 adapted to the straight groove 12, and the partition piece 4 is abutted against the straight groove 12 through the protrusion 41.

[0024] Combination Figure 4-6 As shown, in this embodiment, the lower mold frame 2 is provided with a rectangular groove 22 for connecting the partition piece 4, the lower cavity 21 is provided with a molding hole 23 for forming a mounting column of the injection molded part, and the rectangular groove 22 and the molding hole 23 are spaced apart, the lower mold frame 2 is slidably connected with a push rod 5 in the molding hole 23, the push rod 5 is fixedly connected to the needle feeding plate 3, and the two sides of the raised portion 41 are provided with a first semicircular groove 42 for forming a rotating shaft structure of the injection molded part, the upper cavity 11 is provided with a second semicircular groove 13 corresponding to the first semicircular groove 42, the lower mold frame 2 is provided with a positioning block 24, and the upper mold frame 1 is provided with a positioning groove 14 corresponding to the positioning block 24.

[0025] Combination Figure 7 As shown, the working principle of the utility model is that during injection molding, the injection molding machine controls the upper mold frame 1 and the lower mold frame 2 to close, at which time the partition piece 4 abuts against the linear groove 12, and the upper cavity 11, the lower cavity 21 and the partition pieces 4 on the adjacent two sides form a mold cavity for injection molding, and the mounting column structure and the inner hole structure of the injection molded part are formed by the molding hole 23 and the ejector rod 5, and the rotating shaft part of the injection molded part is formed by the combination of the first semicircular groove 42 and the second semicircular groove 13. After the injection molding is completed, the injection molding machine controls the upper mold frame 1 to leave the lower mold frame 2, and pushes the needle feeding plate 3, and the ejector rod 5 demolds the injection molded part.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An injection mold for mass production, characterized in that: The invention comprises an upper mold frame (1), a lower mold frame (2), a needle feeding plate (3) and a partition member (4); the upper mold frame (1) is provided with an upper mold cavity (11) distributed in a straight line; the lower mold frame (2) is provided with a lower mold cavity (21) corresponding to the upper mold cavity (11); the lower mold frame (2) is slidably connected with the needle feeding plate (3) for demoulding; the upper mold frame (1) is provided with a straight groove (12) penetrating the upper mold cavity (11); the lower mold frame (2) is clamped with a partition member (4) distributed at intervals with the lower mold cavity (21); the partition member (4) is provided with a protrusion (41) adapted to the straight groove (12); and the partition member (4) abuts against the straight groove (12) through the protrusion (41).

2. The injection mold for mass production according to claim 1, characterized in that: The lower mold frame (2) is provided with a rectangular groove (22) for connecting the partition piece (4), and the lower mold cavity (21) is provided with a molding hole (23) for forming a mounting column of the injection molded part, and the rectangular groove (22) and the molding hole (23) are distributed at intervals.

3. The injection mold for mass production according to claim 2, characterized in that: The lower mold frame (2) is slidably connected to a push rod (5) in the molding hole (23), and the push rod (5) is fixedly connected to the needle feeding plate (3).

4. The injection mold for mass production according to claim 3, characterized in that: The two sides of the protruding portion (41) are provided with first semicircular grooves (42) for forming a rotating shaft structure of the injection molded part, and the upper mold cavity (11) is provided with a second semicircular groove (13) corresponding to the first semicircular groove (42).

5. The injection mold for mass production according to claim 1, characterized in that: The lower mold frame (2) is provided with a positioning block (24), and the upper mold frame (1) is provided with a positioning groove (14) corresponding to the positioning block (24).

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