Injection mold for automobile engine cover

Abstract

The invention discloses the technical field of injection molds, and particularly discloses an injection mold for an automobile engine cover. The injection mold comprises an upper surface plate, a hotrunner plate, a fixed template, a fixed mold core, a movable template, a movable mold core, mold feet and a lower surface plate, wherein the upper surface plate is provided with a pouring gate; the pouring gate is connected with a flow division plate; the flow division plate is provided with two hot nozzles; an upper ejector pin plate, a lower ejector pin plate and retraction rods are arranged between the movable template and the lower surface plate; and the upper ejector plate is provided with ejector pins and core-pulling mechanisms. After a plastic melting body enters from the pouring gate,the plastic melting body flows into the flow division plate through the hot runner plate, then, the plastic melting body carries out balance flowing to the two hot nozzles, then, the hot nozzles inject the plastic melting body into the movable mold core and the fixed mold core to realize product forming, meanwhile, the ejector rod of an external injection mold pushes the lower ejector pin plate to upwards move, then, the lower ejector pin plate pushes the upper ejector pin plate to upwards move, at the time, the core-pulling mechanisms inversely buckle a product to carry out core pulling, andthe ejector pins eject the product. The injection mold has the characteristics of high working efficiency and good stability.

Description

technical field [0001] The invention discloses the technical field of injection molds, and more specifically discloses an injection mold for an automobile engine cover. Background technique [0002] With the advancement of science and technology and the improvement of living standards, cars have entered the lives of ordinary people. As one of the parts of cars, the engine cover is the most eye-catching body component, and it is one of the parts that car buyers often need to check. 1. However, in the traditional manufacturing process of injection molds for automobile hoods, after the product is formed, the product will have undercuts. Therefore, after the mold is opened directly, ejector pins and inclined ejectors are used to eject the product to fall off, and the production of automobile hoods Injection molds often have insufficient space at the position of the slanted top, which leads to the inadequacy of the slanted top. This will lead to rough and simple products, and the...

AI Technical Summary

Problems solved by technology

[0005] An injection mold for an automobile engine cover, comprising an upper panel, a hot runner plate, a fixed template, a fixed mold core, a movable template, a movable mold core, a mold foot and a lower panel, the lower panel is connected with the movable template through the mold foot, and the The movable template is located on the outer surface of the movable mold core, the movable mold core is located below the fixed mold core, the fixed mold core is fixed inside the fixed template, the fixed template is located above the movable template, and the fixed template passes through The hot runner plate is connected with the upper panel, and the upper panel is provided with a gate, and the gate is connected with a distribution plate, and the distribution plate is fixed in the hot runner plate, and the distribution plate is provided with two hot nozzles , one end of the hot nozzle is connected with the gate, the other end of the hot nozzle is connected with the fixed mold core and the movable mold core, the movable mold core is fixed in the movable template, and the movable template An upper thimble plate, a lower thimble plate and a retraction rod are arranged between the lower panel, one end of the retraction rod is fixed on the lower panel, and the other end of the retraction rod passes through the lower thimble plate and the upper thimble plate, the upper ejector plate is located on the lower ejector plate, the lower ejector plate and the upper ejector plate are located inside the mold foot, and the upper ejector plate is provided with ejector pins and a core-pulling mechanism, the ejector One end of the core mechanism and one end of the thimble are fixed on the upper thimble plate, the other end of the core pulling mechanism and the other end of the thimble pass through the movable template, and since the gate is connected with a splitter plate, the splitter plate is fixed on the hot runner plate inside, and two hot nozzles are arranged on the distributor plate, one end of the hot nozzle is connected with the gate, and the other end of the hot nozzle is connected with the fixed mold core and the movable mold core, so that the After the plastic melt enters from the gate, it flows into the splitter plate through the hot runner plate, and then flows into the hot nozzle in a balanced manner, and then the hot nozzle sprays the plastic melt into the fixed mold core and the movable mold core for product molding, thereby improving work efficiency At the same time, one end of the core-pulling mechanism and one end of the thimble are fixed on the upper thimble plate, and the other end of the core-pulling mechanism and the other end of the thimble run through the movable template. After the product is formed, the fixed mold core and the movable mold on the fixed template When the movable mold core on the template is opened, the ejector rod of the external injection molding machine pushes the lower ejector plate to move upward, and then the lower ejector plate pushes the upper ejector plate to move upward. At this time, the core-pulling mechanism on the upper ejector plate reverses the product Carry out core pulling, and then the thimble ejects the product, thereby solving the problem that in the prior art, during the product falling off process, the product shakes relatively large, resulting in relatively poor stability, so rework often occurs, which cannot meet the continuous requirements of auto parts. production, leading to the problem of reduced work efficiency, so it has the characteristics of high work efficiency and good stability, and one end of the retraction rod is fixed on the lower panel, and the other end of the retraction rod passes through the lower ejector plate and the upper ejector plate , the return lever can quickly reset the lower ejector plate and upper ejector plate, which is convenient for the product fixed template and movable template to be formed again, thus improving work efficiency

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