Demoulding device for bumper mold

Abstract

The invention discloses a demolding device for a bumper mold. A large inclined ejecting block (2) is connected to a moving die embedding core (1) in a sliding manner under the driving of an ejector retainer plate (3); a small inclined ejecting block (4) in a small inclined jacking mechanism is embedded inside the large inclined jacking block (2); a small inclined jacking guide rod (10) in a small inclined jacking mechanism is connected inside the large inclined jacking block (2) in a sliding manner, and the end part of the small inclined jacking guide rod (10) is connected in a sliding manner with a guide block which is fixedly connected within the moving die embedding core (1). By adopting the structure, the demolding device disclosed by the invention is simple and compact in structure and is capable of precisely realizing each demolding action without damaging a product.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to a demoulding device for bumper moulds. Background technique [0002] With the development of the automobile industry, the automobile bumper, as an important safety device, in addition to its protective function, also pursues light weight. In order to achieve the purpose of light weight, the front and rear bumpers of the automobile are made of plastic materials through the mold. Injection molded. The car bumper made of plastic has good strength, rigidity and decoration, and can play a buffer role when the car collides, protecting the front and rear car bodies. In the prior art, the automobile bumper will connect the panels at the position of the lampshade of the headlight or the rear light as a whole to increase the aesthetics, but in this way, the complexity of the automobile bumper is increased, and the inner surface has a curved surface , Undercut and other structures, which b...

AI Technical Summary

Problems solved by technology

In the prior art, the automobile bumper will connect the panels at the position of the lampshade of the headlight or the rear light as a whole to increase the aesthetics, but in this way, the complexity of the automobile bumper is increased, and the inner surface has a curved surface , undercut and other structures, which bring great complexity to the ejection device of the injection mold

[0003] Generally, the demoulding requirements of automobile bumper products can be basically achieved by using the existing mold structure, but in actual production, especially when the above-mentioned structural requirements for connecting the panels at the position of the lampshade of the headlight or rear light are added, use Traditional molds cannot realize the one-time complete demoulding of automobile bumper products. This is because the panel at the position of the lampshade has an inner concave surface, so it is necessary to set a small inclined roof structure in the mold at the position of the lampshade panel. There is a large inclined roof mechanism and a small inclined roof mechanism at the position of the bar lampshade. Therefore, the inside of the mold at this position is very complicated. At the same time, due to the existence of the two inclined roof structures, the demoulding of the mold must be carried out step by step. Interference will occur and the product itself will be damaged. Therefore, multiple ejector devices for step-by-step demoulding must be installed inside the mold

However, the mold volume within the inner surface of the product is limited. If two straight tops and one inclined top are set inside the mold at the lampshade panel, if a traditional mold is used, one will be placed at the bottom of each straight top or inclined top. base, and two bases or multiple bases cannot arrange the spatial position in the mold, so it is difficult to realize the pick-up of this type of structure, which makes the pick-up of the entire product very difficult; and in order to ensure the smooth demoulding of the product, usually Secondary ejection is required to release the entire bumper product from the mold. However, if secondary ejection is used, the cost of demoulding will be greatly increased and the efficiency of demoulding will be reduced.

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