Welded whole moving oil cylinder structure of injection molding machine

Abstract

The invention discloses a welded whole moving oil cylinder structure of an injection molding machine. a whole moving oil cylinder hitching leg is connected with a whole moving front connector through a whole moving connector pin, and an elastic check ring for a shaft is further arranged at the connection position of the whole moving connector pin; the whole moving front connector is in threaded connection with the whole moving cylinder bottom; an L-shaped hydraulic oil inlet and outlet channel is formed in the whole moving cylinder bottom, and the whole moving cylinder bottom is welded with a whole moving cylinder barrel; a whole moving guide sleeve is arranged in the whole moving cylinder barrel, and installed on the side opposite to the whole moving cylinder bottom; the whole moving guide sleeve is in threaded connection with the whole moving cylinder barrel, and a first O-type sealing ring is arranged at the connection position between the whole moving guide sleeve and the whole moving cylinder barrel; a whole moving piston is arranged on one side of the inner cylinder bottom of the whole moving cylinder barrel, and a whole moving piston rod is in threaded connection with the whole moving piston; the whole moving piston rod penetrates through the whole moving guide sleeve, and extends out of the whole moving cylinder barrel; two glyd rings are arranged between the whole moving piston and the whole moving cylinder barrel for double-acting sealing, and a second wearing ring is further arranged; and a U-type sealing ring, a first wearing ring and a second O-type sealing ring are arranged between the whole moving guide sleeve and the whole moving piston rod.

Description

【Technical field】 [0001] The invention relates to the technical field of injection molding machine equipment, and in particular relates to a structure of a welding-type translational oil cylinder for an injection molding machine. 【Background technique】 [0002] At present, the mobile oil cylinder of the injection seat of the injection molding machine generally adopts a long bolt tie rod type hydraulic oil cylinder, and four long bolt tie rods press the front and rear end covers of the hydraulic cylinder tightly on both sides of the cylinder barrel. When the pretightening force of the four long bolts is inconsistent, there will be a large parallelism error between the two end covers, which may eventually lead to a gap between the end cover and the cylinder, resulting in hydraulic oil leakage. [0003] Four long bolts tie-rod hydraulic cylinders require four long bolts to compress the two cylinder end covers and cylinder barrels during assembly. When the cylinder is working, t...

AI Technical Summary

Problems solved by technology

When the pretightening force of the four long bolts is inconsistent, there will be a large parallelism error between the two end covers, which may eventually cause a gap between the end cover and the cylinder, resulting in hydraulic oil leakage

[0003] Four long bolts tie-rod hydraulic cylinders require four long bolts to compress the two cylinder end covers and cylinder barrels during assembly. When the cylinder is working, the four long bolts are affected by cyclic stress loads at the same time, and fatigue damage is prone to occur after long-term work. , resulting in oil leakage between the end cover cylinder

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