Balanced type ejecting device for injection mold

Abstract

The invention discloses a balanced type ejecting device for an injection mold. The balanced type ejecting device for the injection mold comprises a movable mold plate and a concave die, wherein a concave die cavity is formed in the concave die; a plastic product is left in the concave die cavity; a drive cavity is formed on the movable mold plate; a drive seat capable of moving left and right is arranged in the drive cavity; a slide rail, a first hinge shaft and a second hinge shaft are fixed onto the drive seat; multiple sliding blocks are slidably connected onto the slide rail; two connecting arms are hinged onto each sliding block; the other end of each connecting arm is hinged onto a corresponding ejecting block; the first hinge shaft and the second hinge shaft are hinged with the corresponding ejecting bocks through one connecting arm; and an ejecting pin is arranged at the left end of each ejecting block and is inserted into the concave die in a sleeving way. According to the balanced type ejecting device for the injection mold provided by the invention, the multiple ejecting pins can be stressed uniformly, so that the damage on the plastic product due to nonuniformity in stressing can be effectively avoided.

Description

Technical field: [0001] The invention relates to the technical field of injection molds, in particular to a balanced ejector device for injection molds. Background technique: [0002] Injection mold is a tool for producing plastic products; it is also a tool for giving plastic products complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain complex-shaped parts. Specifically, it refers to injecting the heated and melted plastic into the mold cavity under high pressure from the injection molding machine, and after cooling and solidifying, a molded product is obtained. Plastic products are often adsorbed in the die, which makes it difficult to take out the parts. In order to take out the plastic products from the die smoothly, the usual method is to add a ejector device under the die, and use the thimble installed in the ejector device and elastic parts to eject the plastic product from the die. Although this...

AI Technical Summary

Problems solved by technology

Plastic products are often adsorbed in the concave mold, which makes it difficult to take out the parts. In order to take out the plastic products from the concave mold smoothly, the usual method is to add a ejector device under the concave mold, through the ejector pin installed in the ejector device. and elastic parts to eject the plastic product from the die. Although this ejection method can solve the problem of taking parts from the die, due to the different lengths of the thimbles due to processing errors, sometimes only one or several thimbles are ejected. On the product, the uneven force on several thimbles will cause deformation of the plastic product and reduce the qualified product rate of the plastic product.

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