Evacuation device for mandril of perforator

Abstract

The invention discloses an evacuation device for a mandril of a perforator, and relates to steel rolling machines. The evacuation device comprises a pinch device and a baffle plate; the pinch device consists of a transmission device and a pinch roll mechanism; the transmission device consists of two sets of motors and a universal spindle; and the pinch roll mechanism mainly comprises upper and lower pinch roll shafts connected with the motors and the universal spindle, upper and lower pinch rolls connected with the upper and lower pinch roll shafts, upper and lower swinging arm sleeves sleevedwith the upper and lower pinch rolls, upper and lower pressure arms connected with the upper and lower swinging arm sleeves through minor axes, a hydraulic cylinder hinged with the upper and lower pressure arms, and a telescoping mechanism hinged with the lower pressure arm and connected with a base through a hinge shaft. The evacuation device can make the mandril after perforation evacuate froma steel tube, thereby improving the quality of the steel tube, being capable of using a plurality of the mandrils, circularly cooling the mandrils and improving the processing property of the perforator.

Description

technical field [0001] The invention belongs to steel rolling machinery, and in particular relates to a device for detaching the ejector pin required by the piercing machine in the production of seamless steel pipes from the steel pipe. Background technique [0002] In the current production of seamless steel pipes, the piercer uses the ejector pin to pierce a hole through the heated solid billet, and then rolls the hot billet into a steel pipe. out or the steel pipe out of the mandrel). [0003] The current piercing process is to release the hot steel pipe from the ejector rod after the hole is pierced, which will easily flatten the hot steel pipe and affect the quality of the steel pipe; in addition, the current technology can only use one neck rod, and the ejector rod must be on the same Inserting and pulling out at the station not only takes up production time and affects the output of the piercing machine, but also the cooling of the ejector pin is not good, which affe...

AI Technical Summary

Problems solved by technology

[0003] The current piercing process is to release the hot steel pipe from the ejector rod after the hole is pierced, which will easily flatten the hot steel pipe and affect the quality of the steel pipe; in addition, the current technology can only use one neck rod, and the ejector rod must be on the same Inserting and pulling out at the station not only takes up production time and affects the output of the piercing machine, but also the cooling of the ejector pin is not good, which affects the product quality

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