Hydraulic overload protection structure of press machine

Abstract

The invention discloses a hydraulic overload protection structure of a press machine. The hydraulic overload protection structure of the press machine comprises a sliding block, an oil cylinder and a ball head screw. The hydraulic overload protection structure of the press machine is characterized in that the oil cylinder is arranged in a cavity formed in the sliding block, an opening is formed in the top of the cavity of the sliding block, a piston is arranged in the oil cylinder, a ball-shaped mat making contact with the top face of the piston is arranged at the top of the piston, a ball head gland which is fixed to the sliding block through bolts is arranged above the ball-shaped mat, the ball head portion of the ball head screw is arranged in a ball-shaped cavity formed between the ball-shaped mat and the ball head gland, and a worm wheel is further arranged between the ball-shaped mat and the ball head gland to encase the periphery of the ball head of the ball head screw. According to the hydraulic overload protection structure of the press machine, the spherical surface center of the ball-shaped mat does not interfere with an outer circle of the piston, the position tolerance requirement is low, machining is easier, the service life is prolonged, when the ball-shaped mat is abraded and needs to be replaced, disassembly and assembly of the piston are not needed, maintenance is more convenient and rapid, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of presses, in particular to a hydraulic overload protection structure of a press. Background technique [0002] The clamping height of the mold of the press is the distance between the bottom surface of the slider and the worktable when the crank reaches the bottom dead center. The adjustment of the height of the mold maker is achieved by rotating the screw connected to the slider and the connecting rod sleeve and changing the length of the screw. of. When clamping the mold, first adjust the height of the mold maker of the press to be greater than the closing height of the upper and lower molds. After the upper and lower molds are clamped, adjust the clamping height of the mold of the press to the closing height of the upper and lower molds to punch out qualified products. Component. During use, with the wear and tear of the mold, the clamping height of the mold must be readjusted. When the press is work...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology, provide a hydraulic overload protection structure of the press, and solve the problem that the traditional press mold clamping adjustment mechanism in the current technology is easy to wear and requires an overall Complete replacement, difficult disassembly and assembly, and high maintenance costs

Images