Punch pin drive device for press machine

Abstract

The invention discloses a press machine, and specifically relates to a punch pin drive device for a press machine. The punch pin drive device comprises a punch pin, a crank, a planetary speed reducer and a servo motor, wherein the crank is in transmission connection with the planetary speed reducer, the planetary speed reducer is connected with the output shaft of the servo motor, and a brake is arranged on the output shaft of the servo motor; and the brake comprises a stator, an armature, a rotor, a friction sheet and a flange, the rotor is connected and linked with the output shaft of the servo motor through a spline shaft sleeve, a coil and a spring are arranged in a stator body, the spring is coaxial with the output shaft of the servo motor, one end of the spring is jacked into the stator, the other end of the spring is jacked onto the armature, and a flat key is arranged on the outer ring of the armature and limits the armature to only axially move along the output shaft of the servo motor. The punch pin drive device disclosed by the invention is simple and reasonable in structural design; the planetary speed reducer is used in a replacement manner, so that the height of a product is lowered, and simple structure is achieved; and the servo motor is adopted, so that a power can be automatically adjusted according to output, and energy saving is realized.

Description

technical field [0001] The present invention relates to a press machine, in particular to a punch driving device of the press machine. Background technique [0002] The deceleration mechanism of the existing large-scale presses is realized by the gear set, resulting in increased machine height, bulky, constant output power of the motor, wasting electric energy, and in case of a sudden power failure, the punch cannot be stopped due to the inertia of the motor Come down, it will get out of control and smash the mold. Contents of the invention [0003] It is therefore an object of the present invention to provide a simple, safe and cost-effective punch drive for a press. [0004] The purpose of the present invention is achieved like this. [0005] A punch driving device for a press, including a punch and a crank, and also includes a planetary reducer and a servo motor. The crank is connected to the planetary reducer, and the planetary reducer is connected to the output shaf...

AI Technical Summary

Problems solved by technology

[0002] The deceleration mechanism of the existing large-scale presses is realized by the gear set, resulting in increased machine height, bulky, constant output power of the motor, wasting electric energy, and in case of a sudden power failure, the punch cannot be stopped due to the inertia of the motor down, will get out of control, smash the mold

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