Ejector ejection device

Abstract

The invention discloses an ejector rod take-off device which comprises a base, a driving transmission mechanism arranged on the base, and a clamp roller mechanism driven by the driving transmission mechanism, wherein the clamp roller mechanism comprises an upper pinch roll and a lower pinch roll which are arranged in an opposite way; the ejector rod take-off device also comprises a synchronizing mechanism used for enabling the upper pinch roll and the lower pinch roll to have synchronous action. According to the ejector rod take-off device, no matter how big the diameter of the clamped ejector rod is, the upper pinch roll and the lower pinch roll can synchronously run, and the ejector rod can be pulled out by the synergetic friction force generated by the upper pinch roll and the lower pinch roll; furthermore, the action lines of the clamp force of the upper pinch roll and the lower pinch roll are vertical to the center line of the ejector rod all the time, the direction of the friction force is consistent with the center line of the ejector rod, and the component force along other directions can not be produced. Therefore, the clamp force of the upper pinch roll and the lower pinch roll all acts on the ejector rod, so that the cold and hard ejector rod can be pulled out by the enough clamp force formed by the upper pinch roll and the lower pinch roll. The ejector rod take-off device can improve the technology performances of a perforating machine, and improves the quality and the yield of steel pipes.

Description

technical field [0001] The invention relates to a seamless steel pipe piercing equipment, in particular to a ejector rod ejection device for a piercer to eject the ejector rod from the steel pipe. Background technique [0002] In the current seamless steel pipe production, 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. After that, the ejector pin needs to be separated from the steel pipe, that is, the ejector pin is released from the steel pipe. Or take the steel pipe out of the mandrel. [0003] Such as Figure 1A , Figure 1B and Figure 1C As shown, the traditional ejector rod release device uses two motors 60 to drive the upper pinch roller 61 and the lower pinch roller 62 respectively, the upper pinch roller 61 is connected to the upper swing arm 64, and the lower pinch roller 62 is connected to the lower swing arm 65. After the upper swing arm 64 and the lower swing arm 65 are fast...

AI Technical Summary

Problems solved by technology

In this way, the clamping force will produce a component force that deviates from the horizontal direction. Therefore, the effective clamping force acting on the ejector rod 4 becomes smaller, so that the upper pinch roller 61 and the lower pinch roller 62 slip, and the ejector cannot be pulled out. pole 4

This not only wastes production time and affects the output of the piercing machine, but also disrupts the automation program of the entire unit in severe cases and cannot produce normally.

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