Multi-cavity injection mold ejection mechanism

Abstract

This utility model relates to a multi-cavity injection mold ejection mechanism, which includes a corner ejection module. The corner ejection module includes a lower mold corner insert that forms a corner molding cavity. An auxiliary ejection groove is provided in the middle of the lower mold corner insert. An auxiliary ejection block is provided in the auxiliary ejection groove. The bottom extension length of the auxiliary ejection block is less than the bottom extension length of the corner ejection block, forming a multi-cavity injection mold ejection structure in which the corner is first ejected and then ejected and detached.

Description

Technical Field

[0001] This utility model relates to precision manufacturing technology, and in particular to injection molding, specifically, an ejection mechanism for a multi-cavity injection mold. Background Technology

[0002] In the field of injection molding technology, after the product is formed and cooled, it enters the ejection process. However, some products have chamfered edges or more complex structures, such as multi-groove parts. When the main body of the product is large, direct ejection can easily cause the edges and corners to be pulled apart due to strong adhesion to the lower mold cavity, affecting product quality.

[0003] Therefore, it is necessary to provide an ejection mechanism for a multi-cavity injection mold. Utility Model Content

[0004] The purpose of this invention is to provide an ejection mechanism for a multi-cavity injection mold.

[0005] The technical solution is as follows:

[0006] An ejection mechanism for a multi-cavity injection mold includes a corner ejection module. The corner ejection module includes a lower mold corner insert that forms a corner molding cavity. An auxiliary ejection groove is provided in the middle of the lower mold corner insert. An auxiliary ejection block is provided in the auxiliary ejection groove. A corner side ejection block is provided corresponding to the corner ejection module. The bottom extension length of the auxiliary ejection block is less than the bottom extension length of the corner side ejection block, forming a multi-cavity injection mold ejection structure in which the corner side is first ejected and then ejected and detached.

[0007] Furthermore, the corner inserts of the lower mold are fixedly installed on the lower mold in a waist shape, serving as an auxiliary lifting base for the ejector block.

[0008] Furthermore, the auxiliary ejector groove is equipped with a sliding corresponding protruding ridge.

[0009] Furthermore, the auxiliary ejector block is provided with a corresponding sliding groove that matches the sliding protruding edge, and the corresponding sliding groove combined with the sliding protruding edge forms a smooth support structure for lifting.

[0010] Furthermore, the bottom extension length of the auxiliary ejector block is less than the bottom extension length of the corner ejector block by an amount of A.

[0011] Furthermore, A is 3-5mm.

[0012] Furthermore, the top corner ejector block has a right-angle groove for lifting position, and the lower mold is correspondingly provided with a matching right-angle positioning groove for lower mold lifting position.

[0013] Compared with the prior art, this utility model has a multi-cavity injection mold ejection structure that first lifts the top corner and then ejects the side corner, ensuring that the side corners will not be damaged during the mold ejection process and guaranteeing product quality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0015] Example:

[0016] Please see Figure 1 This embodiment demonstrates an ejection mechanism for a multi-cavity injection mold, including a corner ejection module. The corner ejection module includes a lower mold corner insert 1 that forms a corner molding cavity. An auxiliary ejection groove 11 is provided in the middle of the lower mold corner insert 1. An auxiliary ejection block 2 is provided in the auxiliary ejection groove 11. A corner side ejection block 3 is provided corresponding to the corner ejection module. The bottom extension length of the auxiliary ejection block 2 is less than the bottom extension length of the corner side ejection block 3, forming a multi-cavity injection mold ejection structure in which the corner side is first ejected and then ejected and detached.

[0017] The lower mold corner insert 1 is fixedly set on the lower mold 100, and is waist-shaped, serving as an auxiliary fixed-top block lifting base.

[0018] The auxiliary ejection groove 11 is provided with a sliding corresponding protruding edge 12.

[0019] The auxiliary ejector block 2 is provided with a corresponding slide groove 21 that matches the sliding corresponding protruding edge 12. The corresponding slide groove 21 combined with the sliding corresponding protruding edge 12 forms a smooth support structure for lifting.

[0020] The bottom extension length of the auxiliary ejector block 2 is less than the bottom extension length of the corner ejector block 3 by an amount of A.

[0021] A is 3-5mm.

[0022] The top corner side ejection block 3 has a lifting position right angle groove 31, and the lower mold 100 is correspondingly provided with a matching lower mold lifting right angle positioning groove 4.

[0023] Compared with the prior art, this utility model has a multi-cavity injection mold ejection structure that first lifts the top corner and then ejects the side corner, ensuring that the side corners will not be damaged during the mold ejection process and guaranteeing product quality.

[0024] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A multi-cavity injection mold ejection mechanism characterized by: The system includes a corner ejection module, which includes a lower mold corner insert that forms a corner molding cavity. An auxiliary ejection groove is provided in the middle of the lower mold corner insert, and an auxiliary ejection block is provided in the auxiliary ejection groove. The corner ejection module is equipped with a corresponding corner side ejection block. The bottom extension length of the auxiliary ejection block is less than the bottom extension length of the corner side ejection block, forming a multi-cavity injection mold ejection structure in which the corner side is first ejected and then the corner is ejected and detached.

2. The ejection mechanism of a multi-cavity injection mold according to claim 1, characterized in that: The corner inserts of the lower mold are fixedly set on the lower mold, and are waist-shaped, serving as an auxiliary lifting base for the ejector block.

3. The ejection mechanism of a multi-cavity injection mold according to claim 1, characterized in that: The auxiliary ejection groove is equipped with a sliding corresponding protruding edge.

4. The ejection mechanism of a multi-cavity injection mold according to claim 3, characterized in that: The auxiliary ejector block is provided with a corresponding sliding groove that matches the protruding edge. The corresponding sliding grooves combine with the protruding edge to form a smooth support structure for lifting.

5. The ejection mechanism of a multi-cavity injection mold according to any one of claims 1-4, characterized in that: The bottom extension length of the auxiliary ejector block is less than the bottom extension length of the corner ejector block by A.

6. The ejection mechanism of a multi-cavity injection mold according to claim 5, characterized in that: A is 3-5mm.

7. The ejection mechanism of a multi-cavity injection mold according to claim 1, characterized in that: The top corner ejector block has a right-angle groove for lifting position, and the lower mold has a corresponding matching right-angle positioning groove for lower mold lifting position.

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