Easy-dismounting type two-step ejection mechanism

Abstract

The invention discloses an easy-dismounting type two-step ejection mechanism, which belongs to the field of molds. The easy-dismounting type two-step ejection mechanism comprises a plastic compressor pulling rod arranged at the bottom part of a mold, an upper ejection plate connected with the plastic compressor pulling rod, a middle ejection plate and a lower ejection plate which are orderly arranged at one side of the upper ejection plate, a return pin arranged in the upper ejection plate through a spring, an ejection limiter arranged at the end part of the upper ejection plate, an ejection block arranged at the upper ejector plate through a screw, an ejector plate crossed through the bottom plate, the lower ejector plate, the middle ejector plate, the upper ejector plate and a mold foot, an ejection shaft arranged at the end part of the ejector plate, an ejection spring arranged in the middle of the ejection plate, a secondary ejection limiter arranged in a moving template of the mold, and an ejector rod crossed through the moving template, the mold foot, and the upper ejection plate; a clamping block of the ejector plate and the other clamping block of the ejector plate block adjacent to it are arranged on the ejector plate. Compared with the existed two-step ejection mechanism, the easy-dismounting type two-step ejection mechanism is less in parts, very simple in structure, low in manufacturing cost, short in processing and assembling cycles, and simple and easy to maintain.

Description

technical field [0001] The invention relates to the field of molds, in particular to an easy-to-disassemble secondary ejection mechanism. Background technique [0002] When the shape of the finished product to be taken out from the mold is special, or according to the requirements of mass production, if the finished product is still in the mold cavity after one ejection, or cannot fall off automatically, it is necessary to add another ejection action , such ejection action is the second ejection. Secondary ejection can make the ejection process smoother. For some products that require a large ejection stroke, the use of secondary ejection can reduce the force exerted by the ejector pin during ejection and avoid product defects during ejection. [0003] In the prior art, regarding the secondary ejection mechanism or device of the mold, there are mainly the secondary ejection mechanism in the form of a hook, the secondary ejection mechanism in the form of a resin shutter, a...

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Problems solved by technology

[0003] In the prior art, regarding the secondary ejection mechanism or device of the mold, there are mainly the secondary ejection mechanism in the form of a hook, the secondary ejection mechanism in the form of a resin shutter, and the secondary ejection mechanism in the form of a spring. Among them, the secondary ejection mechanism in the form of a hook is relatively complicated. The secondary ejection mechanism using a resin shutter is easy to wear, the ejection is prone to failure and the ejection force is small, and the secondary ejection mechanism in the form of a spring generally uses a single activity. The insert is partially ejected twice, but the spring cannot be ejected synchronously with the product due to the lack of starting force after the spring is compressed, causing the product to be broken and strained

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