Vertical injection molding machine

Abstract

The invention provides a vertical injection molding machine capable of stopping the repeatedly revolved turntable at predetermined positions. During operation of a vertical injection molding machine (1) having one or more lower molds (15) mounted on a turntable (14) and an upper mold (16) mounted on an upper retention plate (13), lubricant is periodically fed from a pump (30) to a slide portion (S) of the revolving turntable (14). Thereby, the slide resistance of the sliding portions (S) of the turntable (14) is maintained constant, by which the repeatedly revolved turntable (14) is enabled to stop accurately at predetermined positions. Thus, the present machine enables the lower molds (15) which are repeatedly clamped with the upper mold (16) to stopped at the predetermined position.

Description

technical field [0001] The present invention relates to a vertical injection molding machine that opens and closes the mold in the longitudinal direction to form a molded body, and particularly relates to a regulation that can be performed while closing the mold when the lower mold that rotates with the turntable is stopped. Vertical injection molding machine with position stop turntable. Background technique [0002] Conventionally, a so-called two-station type vertical injection molding machine has been used. By rotating the turntable, each of the two lower molds mounted on the turntable can be moved to a position where the mold can be opened and closed relative to one upper mold. The opposite position, and carry out the mold clamping in the longitudinal direction. In vertical injection molding machines such as the so-called two-station system in which such an upper mold and a plurality of lower molds are clamped, a manufacturing method has been adopted in which the Meta...

AI Technical Summary

Problems solved by technology

[0005] but, Image 6 In the above-mentioned vertical injection molding machine, since the stop pin is repeatedly pressed against the stop body by the number of times of molding by the forward and reverse rotation of the turntable, the contact parts of the stop pin and the stop body are worn, respectively. If the vertical forming machine is operated for a long time, it will be difficult to stop the lower molds at the specified positions due to the wear of the positioning stop pins and other parts, and the molds may be damaged when the molds are closed depending on the situation.

In addition, since it is necessary to periodically replace wearing parts such as stopper pins and stoppers, labor and time are extended in the replacement of wearing parts, and the start-up of each molding machine must be interrupted for the parts replacement work. , and furthermore, in a vertical injection molding machine in which insert parts such as metal and resin are integrally molded, the manufacturing cost of the manufactured molded body becomes high

[0006] In addition, if the stop pin and the stop body collide, not only the stop pin and the stop body, but also the drive system of the turntable may be damaged.

Therefore, since it is necessary to surely stop the turntable just before the stopper pin abuts against the stopper, the...

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