Inclined back-off demolding mold

Abstract

The utility model discloses an inclined back-off demoulding mould, which relates to the technical field of moulds, and comprises an upper mould base and a lower mould base, one side of the upper mould base is fixedly connected with an upper mould, one side of the lower mould base is fixedly connected with a lower mould, the lower mould is provided with a cavity, a mould ejection mechanism is arranged below the cavity, and the mould ejection mechanism is arranged below the cavity. The mold ejection mechanism comprises a side ejector pin and a second side ejector pin which are obliquely arranged, the second side ejector pin is composed of two inclined ejector pins which are symmetrically arranged, the mold ejection mechanism further comprises a plurality of vertical ejector pins which are vertically arranged, a mold core is arranged in the upper mold, and the mold core is arranged in the lower mold. The upper die base and the lower die base are connected in a guiding mode through the structures of the guide columns and the guide holes. Through the side ejector pin and the second side ejector pin which are arranged in an inclined mode, the injection mold can be suitable for injection molding of workpieces with inclined faces, the workpieces with the inclined faces can be conveniently ejected out, the workpieces can be conveniently and rapidly ejected out, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an inclined undercut demolding mold. Background Art

[0002] Injection molding demolding is the last link in the injection molding process. After the injection molding action is completed, the plastic part cools and solidifies in the mold. When it is pushed out of the mold, the friction force generated by the demolding resistance must be overcome.

[0003] In injection molded products with complex structures, undercuts are usually provided. Due to structures such as flanges or hooks that are hooked to the mold, the undercuts cannot be directly demolded and usually require a special undercut demolding mechanism for demolding. However, the existing undercut demolding mechanisms are complex in structure, occupy a large space, and are not convenient for undercut demolding.

[0004] In the utility model with the Chinese patent publication number CN205929350U, an injection mold undercut demolding mechanism is proposed. Compared with the prior art, the beneficial effects are as follows: during demolding, first, the slider slides to drive the entire slider to slide horizontally, and the undercut of the plastic part product is separated from the connecting block. At the same time, after the slider moves away, part of the compressive stress is released; then, the lifter moves obliquely upward to lift the plastic part product. Since the compressive stress has become smaller, the undercut demolding is easier and the quality of the plastic part product is more perfect. However, after studying this patent and the prior art, the applicant believes that there is still a problem of low demolding efficiency in the existing inclined undercut demolding mold. Therefore, the present utility model proposes an inclined undercut demolding mold here. Summary of the Utility Model

[0005] Technical Problem to be Solved

[0006] The purpose of the present utility model is to make up for the deficiencies of the prior art and provide an inclined undercut demolding mold. Through the side ejector pins and the second side ejector pins arranged obliquely, it is applicable to the injection molding of workpieces with inclined surfaces, and is convenient for ejecting the workpieces with inclined surfaces, facilitating the rapid ejection of workpieces and improving work efficiency.

[0007] Technical Solution

[0008] To achieve the above purpose, the present utility model provides the following technical solution: an inclined undercut demolding mold, including an upper mold base and a lower mold base. One side of the upper mold base is fixedly connected with an upper mold, one side of the lower mold base is fixedly connected with a lower mold, a cavity is arranged on the lower mold, and a mold ejection mechanism is arranged below the cavity;

[0009] The mold ejection mechanism includes a side ejector pin and a second side ejector pin that are inclined. The second side ejector pin consists of two symmetrically arranged angled ejector pins. The mold ejection mechanism also includes a vertical upright ejector pin, and there are multiple upright ejector pins. By means of the inclined side ejector pin and the second side ejector pin, it is applicable to the injection molding of workpieces with inclined surfaces, and it is convenient to eject the workpieces on the inclined surfaces, facilitating the rapid ejection of the workpieces and improving work efficiency.

[0010] Preferably, a core is provided in the upper mold.

[0011] Preferably, the upper mold base and the lower mold base are guided and connected through the structure of guide columns and guide holes.

[0012] Preferably, a movable ejector pin fixing plate is provided between the lower mold and the lower mold base, and the bottom of the mold ejection mechanism is installed on this ejector pin fixing plate.

[0013] Preferably, the lower mold and the lower mold base are fixedly connected through two side plates.

[0014] Preferably, an injection channel is also provided on the upper mold base.

[0015] Advantageous effects:

[0016] Compared with the prior art, the inclined undercut demolding mold has the following advantageous effects:

[0017] Through the inclined side ejector pin and the second side ejector pin of the present utility model, it is applicable to the injection molding of workpieces with inclined surfaces, and it is convenient to eject the workpieces on the inclined surfaces, facilitating the rapid ejection of the workpieces and improving work efficiency. Description of the drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a structural schematic diagram of the present utility model;

[0020] Figure 2 It is an installation structural schematic diagram of the mold ejection mechanism of the present utility model;

[0021] Figure 3 It is a structural schematic diagram of the mold ejection mechanism of the present utility model.

[0022] In the figure:

[0023] 1. Upper die holder; 2. Lower die holder; 3. Upper die; 4. Lower die; 5. Cavity; 6. Mold ejection mechanism; 601. Side ejector pin; 602. Second side ejector pin; 603. Upright ejector pin; 7. Core; 8. Ejector pin fixing plate; 9. Side plate; 10. Injection channel. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 3 As shown, the present invention provides a technical solution: an inclined undercut demolding mold, including an upper die holder 1 and a lower die holder 2. One side of the upper die holder 1 is fixedly connected to an upper die 3, and one side of the lower die holder 2 is fixedly connected to a lower die 4. A cavity 5 is provided on the lower die 4, and a mold ejection mechanism 6 is provided below the cavity 5. The mold ejection mechanism 6 of the present application includes an inclined side ejector pin 601 and a second side ejector pin 602. The second side ejector pin 602 is composed of two symmetrically arranged inclined ejector pins. The mold ejection mechanism 6 further includes a vertically arranged upright ejector pin 603, and there are multiple upright ejector pins 603. Through the inclined side ejector pin 601 and the second side ejector pin 602, it is applicable to the injection molding of workpieces with inclined surfaces, and it is convenient to eject the workpieces with inclined surfaces, facilitating the rapid ejection of workpieces and improving work efficiency.

[0026] A core 7 is provided in the upper die 3 of the present application, and an injection channel 10 is further provided on the upper die holder 1.

[0027] Please refer specifically to Figure 2 , A movable ejector pin fixing plate 8 is provided between the lower die 4 and the lower die holder 2. The bottom of the mold ejection mechanism 6 is installed on the ejector pin fixing plate 8. The lower die 4 and the lower die holder 2 are fixedly connected by two side plates 9 on both sides, and the upper die holder 1 and the lower die holder 2 are guided and connected by the structure of guide columns and guide holes.

[0028] Working principle: Through the inclined side ejector pin 601 and the second side ejector pin 602, it is applicable to the injection molding of workpieces with inclined surfaces, and it is convenient to eject the workpieces with inclined surfaces, facilitating the rapid ejection of workpieces and improving work efficiency.

[0029] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Oblique reverse demolding die, comprising an upper die base (1) and a lower die base (2), characterized in that: One side of the upper die base (1) is fixedly connected to an upper die (3), one side of the lower die base (2) is fixedly connected to a lower die (4), a cavity (5) is arranged on the lower die (4), and a mold ejection mechanism (6) is arranged below the cavity (5). The mold ejection mechanism (6) includes an inclined side ejector pin (601) and a second side ejector pin (602). The second side ejector pin (602) is composed of two symmetrically arranged inclined ejector pins. The mold ejection mechanism (6) further includes a vertically arranged upright ejector pin (603), and there are multiple upright ejector pins (603).

2. The angled reverse draw demolding mold according to claim 1, characterized in that: A core (7) is arranged in the upper die (3).

3. The angled reverse ejection mold according to claim 1, characterized in that: The upper die base (1) and the lower die base (2) are guided and connected through a structure of guide columns and guide holes.

4. The diagonal reverse demolding mold according to claim 1, characterized in that: A movable ejector pin fixing plate (8) is arranged between the lower die (4) and the lower die base (2), and the bottoms of the mold ejection mechanism (6) are all installed on the ejector pin fixing plate (8).

5. The diagonal reverse demolding mold according to claim 1, characterized in that: The lower die (4) and the lower die base (2) are fixedly connected through two side plates (9).

6. The angled reverse demolding mold according to claim 1, characterized in that: An injection channel (10) is further arranged on the upper die base (1).

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