Injection mold with controllable thrust

Abstract

The thrust-controllable injection mold comprises an upper mold body and a lower mold body, the upper mold body comprises a top plate, an upper base plate, an upper pressing plate and an upper mold core, the lower mold body comprises a bottom plate, a lower base plate and a lower mold core, a mold cavity is formed between the upper mold core and the lower mold core, a groove is formed in the lower base plate, a magnetic material ejecting assembly is arranged in the groove, and the magnetic material ejecting assembly is arranged in the mold cavity. The magnetic ejection assembly comprises U-shaped iron fixed to the bottom of the groove, a magnet fixed to the inner side of the U-shaped iron, a coil located on the inner side of the U-shaped iron and arranged on the outer side of the magnet in a sleeving mode and an ejector pin connected to the upper end of the coil, and the upper end of the ejector pin can extend to the inner side of the cavity. According to the injection mold, a traditional air cylinder ejection device is changed into the magnetic ejection assembly, thrust can be better controlled, no noise is generated in the material pushing process, the structure is simple, and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of molds, in particular to an injection mold with controllable thrust. Background technique [0002] Injection molds are common equipment in the industrial field, mainly used to produce plastic products. The injection molds of the prior art usually use a cylinder to drive the thimble to eject the plastic product from the mold cavity. Due to the large thrust of the cylinder, the thimble is easy to cause wear on the surface of the plastic product, which has a relatively large defect. Contents of the invention [0003] In view of the above problems, the present invention provides an injection mold with controllable thrust. The traditional cylinder ejector is changed into a magnetic ejector assembly, which can better control the thrust, and there is no noise during the ejection process. The structure is simple and easy to manufacture. low cost. [0004] To achieve the above object, the present invention solv...

AI Technical Summary

Problems solved by technology

In the injection mold of the prior art, a cylinder is usually used to drive the ejector pin to eject the plastic product from the mold cavity. Due to the large thrust of the cylinder, the ejector pin is easy to cause wear on the surface of the plastic product, which has a relatively large defect

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