Product demolding mechanism with inverted buckle

By designing a product ejection mechanism with an undercut, and utilizing the cooperation of the shovel base, pressure strip, and wedge-shaped slider, the problem of difficult ejection of undercut products is solved, ensuring that the product is not damaged during the ejection process.

CN224210458UActive Publication Date: 2026-05-08SUZHOU HERUI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU HERUI TECH CO LTD
Filing Date
2025-05-12
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing technology can easily damage plastic products when demolding those with undercuts, especially for irregularly shaped undercut structures.

Method used

The product ejection mechanism with an undercut includes a fixed shovel base, pressure strip, slider seat, square guide post and pull rod. The wedge slider cooperates with the undercut structure to achieve stable product ejection.

Benefits of technology

This allows products with undercuts to be stably ejected from the mold after injection molding, preventing product damage.

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Abstract

The utility model discloses a product demoulding mechanism with an inverted buckle, which comprises a fixed shovel base part and a pressing strip part, the shovel base part is provided with an inclined surface, a first slide block seat is arranged beside the inclined surface, a square guide pillar and a pull rod are connected onto the first slide block seat, the pull rod is arranged in the pressing strip part in a sliding manner, and the square guide pillar is connected with the first slide block seat. A wedge-shaped groove is formed in one end of the pull rod, a wedge-shaped sliding block is arranged in the wedge-shaped groove, and the wedge-shaped sliding block abuts against the inverted buckle position of a product in the mold. According to the mold stripping mechanism for the product with the inverted buckle, stable mold stripping of the product with the inverted buckle can be achieved, and the product cannot be damaged.
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Description

Technical Field

[0001] This utility model relates to a product ejection mechanism with an undercut, belonging to the field of injection molding product production mold technology. Background Technology

[0002] Currently, many plastic products are injection molded using plastic molds. After injection molding, the product is removed from the mold. However, for some complex or irregularly shaped products, demolding can be difficult. For products with undercut structures, there are corresponding wedge-shaped sliders in the mold to form the undercut structure. Due to the irregular undercut structure, demolding is difficult. Rough demolding may damage the product, so a corresponding auxiliary demolding mechanism is needed to demold the product. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a product ejection mechanism with an undercut, which can achieve stable ejection of products with undercuts without damaging the products.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a product ejection mechanism with undercut is provided for use in the molding mold of a product with undercut, including a fixed shovel base and a pressure strip. The shovel base has an inclined surface, and a first slider seat is provided on the side of the inclined surface. A square guide post and a pull rod are connected to the first slider seat. The pull rod is slidably disposed in the pressure strip. A wedge-shaped groove is provided at one end of the pull rod, and a wedge-shaped slider is provided in the wedge groove. The wedge-shaped slider rests against the undercut of the product in the mold.

[0005] Preferably, a second slider seat is provided on the side of the first slider seat, and the second slider seat is connected to the first slider seat by a connecting block.

[0006] The beneficial effects of this utility model are: the product ejection mechanism with undercut can stably eject products with undercuts when they are injection molded through plastic molds without damaging the products. Attached Figure Description

[0007] 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:

[0008] Figure 1 and Figure 2 This is a schematic diagram of the product ejection mechanism with an undercut according to different view directions of this utility model;

[0009] Figure 3 and Figure 4 This is a structural schematic diagram and cross-sectional view of the product ejection mechanism with inverted buckle of this utility model from different cross-sectional views;

[0010] Figure 5 This is a schematic diagram of the structure of the product with an undercut in an embodiment of the product ejection mechanism with an undercut according to this utility model. Detailed Implementation

[0011] 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.

[0012] Please see Figures 1 to 5 This utility model embodiment includes: a product ejection mechanism with an undercut, comprising a fixed shovel base 1 and a pressure strip 2. The shovel base 1 has an inclined surface 3, and a first slider seat 4 is provided on the side of the inclined surface 3. A square guide post 5 and a pull rod 6 are connected to the first slider seat 4. The pull rod 6 is slidably disposed in the pressure strip 2. A wedge-shaped groove 7 is provided at one end of the pull rod 6, and a wedge-shaped slider 8 is provided in the wedge groove 7. The wedge-shaped slider 8 abuts against the undercut 10 of the product 9 in the mold. The undercut 10 is as follows: Figure 5 As shown at point A in the diagram.

[0013] Preferably, a second slider seat 11 is provided on the side of the first slider seat 4, and the second slider seat 11 is connected to the first slider seat 4 through a connecting block 12.

[0014] When the product ejection mechanism with the undercut of this utility model is working, the plastic is injected into the plastic mold to form the product. After the product is formed, the mold is opened, the guide post 5 is pulled upward, and the first slider seat 4 is pulled. The first slider seat 4 slides to the right under the action of the spade base 1 surface 3. At the same time, the pull rod 6 slides to the right. When the pull rod 6 slides, the wedge slider 8 disengages from the wedge groove 7. At the same time, the wedge slider 8 leaves the undercut 10 of the product 9. The second slider seat 11 slides to the right. At this time, the product ejection force is small, the ejection is easy, and the product is not easily damaged during the ejection process.

[0015] 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 product ejection mechanism with undercuts, used in a molding die for products with undercuts, comprising a fixed shovel base and a pressure strip, characterized in that, The shovel base has an inclined surface, and a first slider seat is provided on the side of the inclined surface. A square guide post and a pull rod are connected to the first slider seat. The pull rod is slidably disposed in the pressure strip. A wedge-shaped groove is provided at one end of the pull rod, and a wedge-shaped slider is provided in the wedge groove. The wedge-shaped slider rests against the undercut of the product in the mold.

2. The product ejection mechanism with undercut as described in claim 1, characterized in that, A second slider seat is provided on the side of the first slider seat, and the second slider seat is connected to the first slider seat by a connecting block.