A plastic mold with a front mold core-pulling structure

Abstract

This utility model discloses a plastic mold with a front mold core-pulling structure, which includes an upper fixed plate, an upper template below the upper fixed plate, a lower template below the upper template, a horizontally sliding slider inside the upper template, a first locking plate on one outer side of the upper fixed plate, the upper template, and the lower template, a vertically arranged groove on the first locking plate, a second locking plate slidably arranged in the groove, a clamping head on the top of the second locking plate, one end of the slider located below the clamping head, a first inclined surface at one end of the slider, and a second inclined surface on the top of the groove walls on both sides, the lower end of the second inclined surface extending outward, the first inclined surface being parallel to the second inclined surface and located above the second inclined surface. This plastic mold with a front mold core-pulling structure performs a small-scale mold opening before the main parting surface separates, achieving a front mold core-pulling action, avoiding damage to the product from a single large force during direct mold opening.

Description

Technical Field

[0001] This utility model relates to a plastic mold with a front mold core-pulling structure, belonging to the field of injection molding product production mold technology. Background Technology

[0002] Many plastic products are manufactured using injection molds. The product is shaped by the injection mold, and after the product is injection molded, the mold needs to be opened to remove the product. However, for some products with deep cavity structures or undercut structures on the sides, if the mold is opened directly at once, the product will be subjected to a large force at once, which may damage the deep cavity or undercut structure of the product, affecting the appearance and quality of the product. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a plastic mold with a front mold core-pulling structure. After the product is injection molded, the upper mold plate (front mold) and the lower mold plate are separated in a small amount. The front mold achieves partial core pulling. Then the mold is opened and the main parting surface of the mold is separated. When the product is demolded, it is subjected to force in stages. The force in each stage is relatively small, avoiding the product being damaged by a large force when the mold is opened directly at once.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a plastic mold with a front mold core-pulling structure is provided, including an upper fixed plate, an upper template is provided below the upper fixed plate, a lower template is provided below the upper template, a horizontally sliding slider is provided inside the upper template, a first fastening plate is provided on one outer side of the upper fixed plate, the upper template, and the lower template, the first fastening plate is installed together with the upper fixed plate, a vertical groove is provided on the first fastening plate, a second fastening plate is slidably arranged in the groove, the second fastening plate is installed together with the lower template, a clamping head is provided on the top of the second fastening plate, one end of the slider is located below the clamping head, a first inclined surface is provided at one end of the slider, a second inclined surface is provided on the top of the groove walls on both sides of the groove, the lower end of the second inclined surface extends outward, the first inclined surface is parallel to the second inclined surface, and the first inclined surface is located above the second inclined surface.

[0005] Preferably, a spring is provided inside the upper template, and one end of the spring is fixedly connected to the slider.

[0006] Preferably, a first connecting post is horizontally arranged on the first buckle plate, and the first connecting post is installed inside the upper fixing plate.

[0007] Preferably, a second connecting column is horizontally provided at the lower end of the second buckle plate, and the second connecting column is installed inside the lower template.

[0008] The beneficial effects of this utility model are as follows: After the product is injection molded, the plastic mold with the front mold core-pulling structure first separates the upper mold plate (front mold) and the lower mold plate slightly. Before the main parting surface of the mold separates, a small mold opening is performed to realize a front mold core-pulling action. The front mold partially pulls the core, and then the mold opening action is performed to separate the main parting surface of the mold. The entire mold opening process includes two mold opening actions. When the product is demolded, it is subjected to force in stages. The force in each stage is relatively small, avoiding the product being damaged by a large force when the mold is opened directly at once. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0010] Figure 1 This is a structural schematic diagram of a plastic mold with a front mold core-pulling structure according to the present invention;

[0011] Figure 2 This is a schematic diagram of the first snap-fit ​​plate, the second snap-fit ​​plate, and the slider in the plastic mold with the front mold core-pulling structure of this utility model. Detailed Implementation

[0012] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] Please see Figures 1 to 2The present invention includes: a plastic mold with a front mold core-pulling structure, comprising an upper fixed plate 1, an upper template 2 below the upper fixed plate 1, a lower template 3 below the upper template 2, a horizontally sliding slider 4 inside the upper template 2, a first fastening plate 5 on one outer side of the upper fixed plate 1, the upper template 2 and the lower template 3, the first fastening plate 5 being installed together with the upper fixed plate 1, a vertically arranged sliding groove 6 on the first fastening plate 5, a second fastening plate 7 slidably arranged inside the sliding groove 6, the second fastening plate 7 being installed together with the lower template 3, a locking head 8 on the top of the second fastening plate 7, one end of the slider 4 being located below the locking head 8, a first inclined surface 9 at one end of the slider 4, a second inclined surface 10 on the top of the groove walls 14 on both sides of the sliding groove 6, the lower end of the second inclined surface 10 extending outward, the first inclined surface 9 being parallel to the second inclined surface 10, and the first inclined surface 9 being located above the second inclined surface 10.

[0014] Preferably, a spring 11 is provided inside the upper template 2, and one end of the spring 11 is fixedly connected to the slider 4.

[0015] Preferably, a first connecting post 12 is horizontally arranged on the first buckle plate 5, and the first connecting post 12 is installed inside the upper fixing plate 1.

[0016] Preferably, a second connecting post 13 is horizontally provided at the lower end of the second buckle plate 7, and the second connecting post 13 is installed inside the lower template 3.

[0017] When the plastic mold with the front mold core-pulling structure of this utility model is working, the plastic is injected into the upper mold plate 2 and the lower mold plate 3 to form a mold. Then, in preparation for mold opening, the upper mold plate 2, the lower mold plate 3, the second locking plate 7, the slider 4, and the spring 11 move downward together (the clamping head 8 of the second locking plate 7 pulls the slider 4 downward together, and the slider 4 slides downward in the slide groove 6). After moving a certain distance, the first inclined surface 9 of the slider 4 contacts the second inclined surface 10 of the first locking plate 5. While moving downward, the slider 4 is blocked and pushed to the right by the second inclined surface 10 until the slider 4 is completely disengaged from the clamping head 8. At this time, the lower mold plate 3 and the spring 11... The upper mold plate 2 separates by a certain distance, which is equivalent to a small mold opening, realizing a front mold core pulling action. The front mold partially pulls the core, and the product is partially ejected. At this time, the upper mold plate 2, the slider 4 and the spring 11 remain stationary, and the lower mold plate 3 continues to move downward. At this time, the main parting surface of the mold separates, the upper mold plate 2 and the lower mold plate 3 are completely separated, the mold opening is completed, the product is ejected, and one cycle of the mold is completed. The entire mold opening process includes two mold opening actions. When the product is ejected from the mold, it is subjected to force in stages. The force in each stage is relatively small, which can avoid the product being damaged by a large force at once when the mold is opened directly.

[0018] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A plastic mold with a front mold core-pulling structure, comprising an upper fixing plate, an upper template disposed below the upper fixing plate, and a lower template disposed below the upper template, characterized in that, The upper template is equipped with a horizontally sliding slider. A first fastening plate is provided on the outer side of one side of the upper fixing plate, the upper template, and the lower template. The first fastening plate is installed together with the upper fixing plate. A vertical groove is provided on the first fastening plate. A second fastening plate is slidably arranged in the groove. The second fastening plate is installed together with the lower template. A locking head is provided on the top of the second fastening plate. One end of the slider is located below the locking head. A first inclined surface is provided at one end of the slider. A second inclined surface is provided on the top of the groove walls on both sides. The lower end of the second inclined surface extends outward. The first inclined surface is parallel to the second inclined surface and is located above the second inclined surface.

2. The plastic mold with a front mold core-pulling structure according to claim 1, characterized in that, A spring is provided inside the upper template, and one end of the spring is fixedly connected to the slider.

3. The plastic mold with a front mold core-pulling structure according to claim 2, characterized in that, A first connecting post is horizontally arranged on the first buckle plate, and the first connecting post is installed inside the upper fixing plate.

4. The plastic mold with a front mold core-pulling structure according to claim 3, characterized in that, A second connecting column is horizontally provided at the lower end of the second buckle plate, and the second connecting column is installed inside the lower template.

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