Elastic self-adaptive wear-free straight top block

Abstract

The invention relates to the field of mold technology, in particular to an elastic self-adaptive wear-free straight ejector block. Compared with the prior art, the elastic self-adaptive wear-free straight ejector block comprises a cavity plate and a core, an elastic straight ejector block is inserted between the lower end of the cavity plate and the core, an open groove is provided at the upper end of the elastic straight ejector block, and an ejector block self-adaptive adjustment block is inserted into the open groove, so that the elastic straight ejector block and the "mold opening" of the core are self-adaptively matched when the mold is closed, thereby ensuring the quality of the product; when the mold is opened, the elastic straight ejector block can self-contract and separate from the "mold opening" to form a gap, and wear-free operation is achieved during ejection, which can greatly improve the life of the injection mold, simplify the processing of the mold, improve the precision, and reduce the cost.

Description

Technical Field

[0001] The invention relates to the technical field of moulds, in particular to an elastic self-adaptive wear-free straight top block. Background Art

[0002] The ejector device of the injection mold and the "mold mouth" of the mold core that cooperates with it need to withstand repeated movement and surface friction. It is very easy to cause burrs on the product due to wear during operation, which has always been the shortcoming of the mold life. Summary of the invention

[0003] In order to solve the defects and problems of short service life of injection molds in the prior art, an elastic self-adaptive non-wearing straight ejector block is provided.

[0004] The technical solution adopted by the present invention to solve its technical problems is: an elastic self-adaptive wear-free straight ejector block of the present invention includes a cavity plate and a core, an elastic straight ejector block is inserted between the lower end of the cavity plate and the core, and an open groove is provided at the upper end of the elastic straight ejector block, and a ejector block self-adaptive adjustment block is inserted into the open groove.

[0005] The lower end of the elastic straight ejector block presses a ejector rod.

[0006] The elastic straight top block maintains a certain gap with the side surface of the core.

[0007] The gap between the elastic straight top block and the side surface of the core is less than 0.02 mm.

[0008] The beneficial effects of the present invention are as follows: compared with the prior art, the elastic self-adaptive wear-free straight ejector block of the present invention can realize the self-adaptive cooperation between the elastic straight ejector block and the "mold opening" of the core when the mold is closed, thereby ensuring the quality of the product; when the mold is opened, it can self-contract and separate from the "mold opening" to form a gap, and realize wear-free operation during ejection, which can greatly improve the life of the injection mold, simplify the processing of the mold, improve the precision and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The elastic self-adaptive non-wearing straight top block of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0010] Figure 1 It is a schematic diagram of the matching structure between the elastic straight top block and the top block adaptive adjustment block of the present invention;

[0011] Figure 2 It is a schematic diagram of the matching structure of an elastic self-adaptive non-wearing straight ejector block of the present invention when the mold is in an open state;

[0012] Figure 3 It is a schematic diagram of the matching structure of an elastic self-adaptive non-wearing straight ejector block of the present invention when the mold is ejected open. DETAILED DESCRIPTION

[0013] like Figures 1 to 3 As shown, an elastic self-adaptive wear-free straight ejector block of the present invention comprises a cavity plate 1 and a core 2, an elastic straight ejector block 3 is inserted between the lower end of the cavity plate 1 and the core 2, a certain gap is maintained between the elastic straight ejector block 3 and the side of the core 2, and the gap is less than 0.02 mm, a ejector rod 4 is pressed on the lower end of the elastic straight ejector block 3, an open groove 31 is provided at the upper end of the elastic straight ejector block 3, and an ejector block self-adaptive adjustment block 5 is inserted into the open groove 31.

[0014] like Figures 1 to 3 As shown, when the mold is closed, the ejector block adaptive adjustment block 5 is pressed into the opening groove 31 of the elastic straight ejector block 3 by the mold closing force. Due to the expansion effect of the slope, the opening groove 31 is squeezed open and close to the side of the core 2, so that a gap of less than 0.02mm is maintained between the elastic straight ejector block 3 and the side of the core 2 to ensure that no burrs are generated during injection molding. After the injection molding is completed, the mold is opened, and the ejector block adaptive adjustment block 5 withdraws from the opening groove 31 due to the withdrawal of pressure. At the same time, the elastic straight ejector block 3 that is tightly pressed by the expansion rebounds, thereby separating from the side of the core 2. The mold performs the ejection action, and the elastic straight ejector block 3 pushes up to eject the product 0. During the ejection process, the elastic straight ejector block 3 and the die opening of the core 2 are always in a gap separation state, without friction, thereby extending the life of the die opening (the die opening is the joint of the elastic straight ejector block 3, the core 2 and the product).

[0015] In summary, compared with the prior art, the elastic self-adaptive wear-free straight ejector block of the present invention can realize the self-adaptive cooperation between the elastic straight ejector block and the side of the core when the mold is closed, thereby ensuring the quality of the product; when the mold is opened, the elastic straight ejector block can self-contract and separate from the side of the core, and realize wear-free operation during ejection, which can greatly improve the life of the injection mold, simplify the processing of the mold, improve the precision and reduce the cost.

[0016] The present invention has been described in an illustrative but not restrictive manner according to the embodiments of the present invention, but it should be understood that the protection scope of the present invention is not limited thereto. Without departing from the relevant protection scope defined by the claims, those skilled in the art may make changes and / or modifications. Any modifications, equivalent substitutions, etc. based on this should be included in the protection scope of the present invention.

Claims

1. Elastic self-adaptive non-wearing straight top block, characterized by: The invention comprises a cavity plate and a core, wherein an elastic straight ejector block is inserted between the lower end of the cavity plate and the core, an upper end of the elastic straight ejector block is provided with an open groove, an ejector block adaptive adjustment block is inserted into the open groove, a ejector rod is pressed on the lower end of the elastic straight ejector block, a certain gap is maintained between the elastic straight ejector block and the side surface of the core, and the gap between the elastic straight ejector block and the side surface of the core is less than 0.02mm; when the mold is closed, the elastic straight ejector block is adaptively matched with the side surface of the core, and when the mold is opened, the elastic straight ejector block can shrink and separate from the side surface of the core.

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