Supporting roller lifting mechanism for centrifugal tube casting machine

Abstract

The invention relates to a centrifugal tube casting machine, in particular to a supporting roller lifting mechanism for the centrifugal tube casting machine. The mechanism is used for replacing a tube die. The two ends of a connecting rod component are hinged with one end of a left rotating arm and one end of a right rotating arm; the other end of the left rotating arm and the other end of the right rotating arm are fixed with a left swing arm shaft and a right swing arm shaft; the left swing arm shaft and the right swing arm shaft are hinged with a centrifuge body and fixed with one end of a left swing arm and one end of a right swing arm; the other end of the left swing arm and the other end of the right swing arm are hinged with a left supporting roller and a right supporting roller; a driving arm of a hydraulic cylinder is hinged with the left rotating arm or the right rotating arm; and a hydraulic cylinder body is hinged with the centrifuge body. The mechanism has a simple structure and high synchronism and lifts the supporting rollers through one hydraulic cylinder.

Description

technical field [0001] The invention relates to a centrifugal pipe casting machine, in particular to an idler lifting mechanism of the centrifugal pipe casting machine, which is used for replacing pipe molds. Background technique [0002] For the water-cooled metal centrifuge, due to the process and working method, the life of the pipe mold is short, and the general use frequency is 3000-5000 pieces, and the pipe mold needs to be replaced regularly. In addition, the water-cooled metal centrifuge adopts group production technology, that is, one centrifuge can produce 5 to 7 kinds of cast pipes. Due to the needs of producing cast pipes of different specifications, the pipe molds are replaced irregularly, so the centrifuge is permanently installed. The device for replacing the pipe mold, that is, the roller lifting mechanism. Every time the pipe mold is replaced, the pipe mold is first lifted by the lifting mechanism of the supporting roller, so that it is separated from the s...

AI Technical Summary

Problems solved by technology

But it has the following deficiencies: ① It needs manual synchronous adjustment of the lifting mechanism, and the automation level is not high; ② The structure is complex; ③ The tie rod has been soaked in water for a long time, and it must be sealed between the shaft and the shaft sleeve; ④ The production and installation costs are high; ⑤ Inconvenient maintenance and repair

Subsequently, in response to the above shortcomings, the following improved design was made: the lifting ring-single lifter was used instead of the double tie rod-double lifter to simplify the mechanism; hinge points were added to the inner wall of the centrifuge to improve the system stability; however, manual synchronous adjustment was still required and could not To achieve automatic control, the mechanism for lifting is relatively complicated

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