Horizontal disk injecting forming unit

Abstract

A horizontal disc type injection moulding machine is composed of a rotary disc unit, a injection moulding unit and a mould closing unit. Said injection moulding unit consists of a horizontal injection part and an injection jointer for allowing the fused plastic fluid to flow through it. Said mould closing unit comprises and mould closing cylinder with piston moving up and down, and an injection head fixed to the lower end of said piston for injecting the fused plastic fluid into moulding cavity of mould.

Description

technical field [0001] The invention belongs to a plastic injection molding machine, in particular to a disc type plastic injection molding machine. Background technique [0002] Disc-type plastic injection molding machine is a kind of equipment specially used for manufacturing shoe soles. The disc used is often equipped with multiple sole molds of the same style and different sizes at the same time. Therefore, it is necessary to set the molds on the turntable for plastic injection molding. The machine injects molds with different styles and codes in stages, and facilitates the mold opening and taking out the molded soles and other processes. [0003] The disc-type plastic injection molding machine mainly includes a turntable device, an injection device for injecting plastic fluid into the mold, and a mold clamping device. The turntable device includes a rotatable disc and a disc drive device for controlling the rotation of the disc. The injection device Includes injection ...

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Problems solved by technology

[0006] The disadvantage of the traditional disc horizontal plastic injection molding machine is: since the mold clamping cylinder is set under the disc, in order to complete the mold clamping and delay pressure maintenance work, the piston of the mold clamping cylinder must move from the bottom to the top of the mold clamping plate. The hole is pushed out and higher than the disc until the mold is pressed against the injection head, but in order not to affect the normal rotation of the disc, the distance between the piston of the clamping cylinder and the injection head above the disc is relatively long. That is, the stroke of the mold clamping cylinder piston is relatively long, so it takes a long time for this type of injection molding machine to complete an injection molding work, and the production efficiency is low

[0009] This type of injection molding machine can shorten the stroke distance and time spent on the mold clamping cylinder piston during the mold clamping process, but when this type of injection molding machine is injected, the melted plastic fluid is directly discharged from the mold through the nozzle of the injection molded part. The side of the injection mold is injected into the cavity of the mold. This injection method requires very precise positioning of the feed hole of the mold; it has accurate positional relationships such as the height and size of the feed holes of each pair of molds positioned on the disc. Requirements, but because the soles are divided into sizes, high heels and flat heels, the size and height of the shoe molds used are also different, but it must be satisfied so that the height of all positioning holes must be consistent with the nozzle of the injection molded parts used. The requirement of maintaining the same height will make the adaptability of this type of injection molding machine smaller, for example, it cannot adapt to processing higher and lower molds, or larger and smaller molds at the same time, and it also improves manufacturing. The difficulty of the sole mold of this injection molding machine

[0010] In addition, because this kind of injection molding machine is in the working process of mold clamping and delayed pressure holding, the piston of the mold clamping cylinder is directly pressed against the mold, and the mold is supported by the disk with the edge hanging in the air, that is, the disk is placed in the mold when it is set. The edge must bear all the pressure of the piston of the mold clamping cylinder. Due to the frequent and huge pressure, the edge of the disc will be deformed under pressure for a long time, making the resistance of the disc too large when it rotates or it can no longer continue to work normally, reducing the pressure. The service life of the disc

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