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Title:
BALL LEAD SCREW LOCKING MECHANISM FOR PRESS
Document Type and Number:
WIPO Patent Application WO/2019/095342
Kind Code:
A1
Abstract:
A ball lead screw locking mechanism for a press, characterized in that: a through-open hydraulic cylinder (3) is disposed on a connecting rod (1) at the part close to a lower end; the middle position of the hydraulic cylinder (3) communicates with a middle threaded hole (12) of the connecting rod (1); two ends in a cylinder body of the hydraulic cylinder (3) are each provided with a piston (4); inner threaded teeth (13) fitted with threads on a ball lead screw (2) are formed on each piston (4) at the position closest to the outer peripheral surface of the ball lead screw (2); opening parts at two ends of the hydraulic cylinder (3) are each provided with a small hydraulic cylinder (5), of which a cylinder body has an inner diameter smaller than the cylinder body of the hydraulic cylinder (3); the inner cavity of each small hydraulic cylinder (5) directly communicates with a piston cavity of the hydraulic cylinder (3); a cap-shaped nut (7) is provided at an end part of each small hydraulic cylinder (5) on the outer circle in a threaded fitting mode; and by rotating the cap-shaped nut (7) in different directions, a plunger piston (6) can be pushed or loosen into different states by means of an inner end surface of the nut (7). The locking mechanism is reasonable and simple in structure, can generate a relatively great force with a relatively small force, and has the advantage of good locking effect.

Inventors:
SUN, Shengqiang (3/F, Bldg. B No. 18 Kechuang Rd., Gaoxin Distric, Suzhou Jiangsu 3, 215163, CN)
Application Number:
CN2017/111766
Publication Date:
May 23, 2019
Filing Date:
November 18, 2017
Export Citation:
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Assignee:
SUN, Shengqiang (3/F, Bldg. B No. 18 Kechuang Rd., Gaoxin Distric, Suzhou Jiangsu 3, 215163, CN)
International Classes:
B30B15/28; B30B1/18
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