Method and device for sheet selection or plate falling at cold end of flat plate glass production line

Abstract

The invention discloses a method and device for sheet selection or plate falling at a cold end of a flat plate glass production line. The device comprises hanging roller tables, transmission mechanisms, lifting mechanisms and a control system, wherein the hanging roller tables are arranged in four groups and are mutually arranged in parallel at intervals; one end in the length direction of each group of the hanging roller table is fixedly connected with a support top end which is vertical to the ground of the end through a crankshaft, and the other end in the length direction is suspended to become a cantilever end; sliding tracks are arranged on the lower surfaces of the hanging roller tables which are close to the cantilever ends; the transmission mechanisms are arranged in four groups and respectively arranged at the end of each group of the hanging roller table, which is connected with the crankshaft; the lifting mechanisms are arranged in five groups, and four groups of the five groups are single-cylinder lifting mechanisms and are respectively connected with the four groups of the hanging roller tables; one group is a double-cylinder lifting mechanism, and two cylinders are connected with the four groups of the hanging roller tables through a rotating shaft stretching across below the four groups of the hanging roller tables; the control system is connected with the four groups of the lifting mechanisms through a main gas source. By utilizing the device, sheet selection or plate falling of less than three glass plates can be performed, the efficiency is high, the breakage rate of glass is low, the range of applications is wide, and the popularization is convenient.

Description

technical field [0001] The invention relates to a method and device for selecting or dropping plates at the cold end of a flat glass production line. Background technique [0002] Most of the existing cold-end selection rollers of the glass production line can only achieve two-piece selection and drop-off. As a result, the width of the original float glass plate is getting wider and wider, and the glass ribbon is required to be divided into multiple pieces to meet the requirements of multi-variety and multi-standard production. In recent years, with the advancement of science and technology, the production technology of multi-piece selection and drop-off in the flat glass production line has made great progress. [0003] In the current float glass production line, whether there are two or three pieces of sheet selection and drop-off devices, the lifting mechanisms are basically independent; usually there are the following types: one is to set the rotating shaft of the landi...

AI Technical Summary

Problems solved by technology

[0003] In the current float glass production line, whether there are two or three pieces of sheet selection and drop-off devices, the lifting mechanisms are basically independent; usually there are the following types: one is to set the rotating shaft of the landing gear with the first roller. As a whole, the rotation of the rollers also transmits the power to other rollers through the first roller, which is generally driven by a chain; this structure can keep the upper generatrix of the rollers in the direction of glass advancement from being raised when the roller table is moving up and down; When lifting, it will change the tension of the transmission sprocket, so that the rotation speed of the rollers will be unstable, resulting in unreasonable deviation or displacement of the glass moving on the roller table; the second is to install an external suspension on the outside of the roller table, The roller shaft is separated from the first roller, and the transmission is equipped with an external transmission shaft. This structure solves the problem of unstable transmission of the rollers during the lifting of the landing gear; however, during the lifting of the landing gear, it will cause the suspension of the first roller of the roller table The upper generatrix of the roller table rises or falls, sometimes higher than the upper generatrix of the normal roller table, sometimes lower than the upper generatrix of the normal roller table, which causes the acceleration or deceleration of the glass sheet on the roller table, and also makes the glass on the roller table produce relative displacement

The third is that when multiple pieces of glass come over, when the speed of the suspension roller table is not synchronized when the landing gear is raised or lowered at the same time, the glass on the roller table will also move relatively; it is precisely because there is a relative movement between the glass and the transmission roller table. Sliding will cause the lower surface of the glass to be scratched and reduce product quality; or, after the glass moves relatively, it will have a certain impact on the positioning of the glass box, resulting in uneven glass chips, which seriously affects the surface quality and quality of the finished glass product. Packing quality

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