Stroke automatic adjusting device for press machine

Abstract

The invention relates to a stroke automatic adjusting device for a press machine, belonging to the technical field of press machines. The device is characterized in that eccentric sleeves are sleeved and fixed at two ends of a crank; a planet gear mechanism is arranged in each eccentric sleeve; two ends of the crank are respectively provided with a locking mechanism and a self-locking worm and worm gear adjusting mechanism. The device is provided with two eccentric centers, one is an eccentric center of the crank itself, while the other is the eccentric center of a combining bush of an external gear ring, wherein the eccentric center of the combining bush of the external gear ring is fixed, rotation of the crank can change the distance between the two eccentric centers which is the eccentricity of a slider mechanism when the gear rotates, namely half of a slide stroke, so that different eccentricities can be obtained by rotating the crank structure inside. The device has reasonable structure, convenient stroke adjustment and reliable self locking, realizes automatic adjustability, effort saving, accuracy and reliable locking, is stable, greatly contributes to improve the manufacture technical range of the press machine, and has strong practicality and economy.

Description

technical field [0001] The invention relates to an automatic adjustment device for a stroke of a press, which is to better meet the automatic adjustment of the stroke of a press, and belongs to the technical field of presses. Background technique [0002] There are two kinds of strokes of the press, fixed and adjustable. The stroke of the fixed stroke press is not adjustable. The processing technology of the press is limited and cannot meet the requirements of some users. Therefore, a stroke adjustable press is designed. After retrieval , the current stroke adjustable press is mainly equipped with an eccentric sleeve type manual adjustment mechanism at the journal. This structure adjusts the eccentricity at the journal, so the journal will be made very thick, resulting in It heats up and tightens, making it inconvenient to adjust, and because of structural limitations, the number of adjustment stages is very small, which cannot well meet the needs of adjustable strokes. Co...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an automatic stroke adjustment device for presses, aiming at the limitation of the application range of the existing fixed stroke of the slider of the press, especially the shortcomings of the current adjustable stroke presses that have few adjustment stages and inconvenient adjustments , because the structure is adjusted by manpower, and its own structure determines the limited adjustment level, as well as the inability to realize automatic adjustment and large stroke.

Images