Plastic die parting-plane air-admission stripper

Abstract

A plastic mold split surface gas inlet demoulding mechanism consists of a convex mold and a concave mold, wherein, a pulling slab is arranged on the convex mold, a pulling hook is arranged on the concave mold, and the pulling hook is contacted with the pulling slab.The mechanism is characterized in that the concave mould is provided with a blowing passage which is provided with a gas inlet and a gas outlet, the convex mold is provided with a top wind passage and a plurality of split surface gas inlet passages, the top wind passage is provided with a wind inlet and a wind outlet, the gas inlet passages of the spit surfaces are respectively provided with a wind injecting port and a wind blowing port, the gas flow produced from the wind blowing ports is positioned in the gap between the convex mold and the plastic production. The demoulding time of the demoulding mechanism is short, the plastic production can automatically fall off within the molding completion time of the injection molding machine, and therefore, the production efficiency is improved. On the other hand, the pulling path of the pulling slab is short, the influence to the mold is small, and the service life is long.

Description

technical field [0001] The invention relates to a demoulding mechanism of a plastic mold, and is mainly suitable for plastic products with closed tops and surroundings, such as plastic boxes, barrels and other products. Background technique [0002] Plastic products need to be released from the mold after injection molding. The existing demoulding mechanism can be divided into two types: one is about 1 to 2 seconds before the mold (its structure is shown in Figure 3) is divided, the first is the concave The air inlet of part A of the mold is used to keep the outer wall of the product and the inner wall of the concave mold in a vacuum state, and the product will move together with the punch. Push plate C (in addition to the way of pulling out with a pull rod, the way of jacking out by an oil cylinder can also be used), so that the product D is separated from the punch, and then taken out with a manipulator. The disadvantage of this method is that the production cycle is long...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the production cycle is long (that is, the whole process is: injection molding machine mold opening time + push plate C part pulling or ejection time + manipulator taking product time), low production efficiency

The other is that the molded plastic product falls off automatically. When working, the push plate C must be pulled out or ejected by 3 / 4 of the product height H, otherwise the product will not fall off, resulting in two adverse consequences. One is that there is a long production cycle (i.e. The whole process is: injection molding machine mold opening time + push plate C part pull or ejection time); second, due to the weight of push plate C, it will cause friction on the guide column E of the punch and push plate C itself, and the life of the mold will be shortened

Images