Brittle material breaking device

Abstract

The invention provides a brittle material breaking device which is qualified to break the brittle material, no matter the breaking object is the thick plate or the thin plate. The brittle material breaking device includes: a support table for supporting a brittle material; and a breaking bar 59 for pressing down the brittle material on which a scribe line is formed and which is moved by a transfer means. And, the brittle material breaking device breaks the brittle material along the scribe line by using the breaking bar 59. The brittle material breaking device further comprises: a plurality of support members 53 for moving the breaking bar upward and downward; and liner servo motors 57 for moving a plurality of the support members 53. The support members 53 are arranged in a longitudinal direction of the breaking bar 59. The movements of the linear servo motors 57 are controlled so as to change an inclination angle of the breaking bar 59 in a nearly-vertical surface.

Description

technical field [0001] The present invention relates to a brittle material breaking device capable of high-quality breaking of a brittle material such as a glass plate on which a score line is formed without causing cracks or the like on the breaking section. Background technique [0002] After forming a scribe line on a plate-shaped brittle material such as a glass plate, a specific load is applied to the brittle material, thereby breaking the brittle material along the scribe line. [0003] As a conventional breaking device, an air cylinder type breaking device is often used, which lowers the breaking bar at a speed faster than a specific speed, and can reliably break even a thick plate of brittle material. However, in the air cylinder type switching device, the speed is controlled by air pressure, so precise speed control cannot be performed, and it is difficult to adjust the pushing amount. [0004] Therefore, a servo-type breaking device has been developed that can pre...

AI Technical Summary

Problems solved by technology

However, in the case of a thick plate, unless the breaking rod 9 is lowered at a speed higher than a certain speed, there is a high possibility that the thick plate cannot be broken along the scribed line.

Since the conventional servo-type breaking device does not have a mechanical stopper, there is a problem that the breaking rod 9 is excessively pushed in when the speed is above a fixed speed, and the breaking device itself may be damaged.

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