Hydraulic control system for machine for connecting sealing strip to corner

Abstract

The invention discloses a hydraulic control system for a machine for connecting a sealing strip to a corner. The hydraulic control system for the machine for connecting the sealing strip to the corner comprises a hydraulic pump (31), an electric motor (32), an overflow valve (33), an oil tank (34), a die locking oil cylinder (1) and an injection molding oil cylinder (2). The hydraulic control system is characterized in that a rotor of the electric motor (32) is connected with the hydraulic pump (31), an oil inlet of the hydraulic pump (31) is connected with the oil tank (34), an oil outlet of the hydraulic pump (31) is connected with the overflow valve (33) and an oil inlet of a first three-position and four-way K type electromagnetic reversing valve (13), an oil outlet of the overflow valve (33) is connected with the oil tank (34), an oil return port of the first three-position and four-way K type electromagnetic reversing valve (13) is connected with an oil inlet of a second three-position and four-way K type electromagnetic reversing valve (23), an oil return port of the second three-position and four-way K type electromagnetic reversing valve (23) is connected with the oil tank (34), a first working port of the first three-position and four-way K type electromagnetic reversing valve (13) is connected with a rod cavity of the die locking oil cylinder (1), a second working port of the first three-position and four-way K type electromagnetic reversing valve (13) is connected with a rodless cavity of the die locking oil cylinder (1), a first working port of the second three-position and four-way K type electromagnetic reversing valve (23) is connected with a rod cavity of the injection molding oil cylinder (2), and a second working port of the second three-position and four-way K type electromagnetic reversing valve (23) is connected with a rodless cavity of the injection molding oil cylinder (2).

Description

technical field [0001] The invention relates to a control system of a corner jointing machine, in particular to a hydraulic control system of a woolen corner jointing machine. Background technique [0002] At present, the groove joining technology is widely used in the grooves of automobile windows. When there is a corner at the position where the grooves are installed, the grooves should also have corresponding corners. This corner is completed by connecting the grooves to the corners. When the groove is connected to the corner, first put the two rubber sealing strips to be connected into the corresponding position in the corner connection mold of the corner connection machine, then the clamping cylinder locks the mold, and the injection cylinder injects the rubber into the mold under high pressure. In the mold cavity, the rubber in the mold cavity is pressure-holding, heated, vulcanized, and shaped. Finally, the mold is opened, the upper mold plate and the lower mold plate...

AI Technical Summary

Problems solved by technology

During the operation of the traditional woolen corner jointing machine, the problem of high hydraulic oil temperature often occurs due to the inability to automatically control the pressure. Although the air cooling technology is adopted, the ideal temperature is still not reached.

In addition, due to the inability to automatically adjust the speed during the injection process, the pressure is too high or the speed is unbalanced, resulting in the deformation of the product when the groove meets the corner, and the scrap rate increases.

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