A lower ejector device for heavy-duty forging machine

Abstract

A lower ejector device for a heavy-duty forging machine, including a forging machine base, a hydraulic cylinder, a support mechanism, and an ejector mechanism. The ejector mechanism includes a pressure pad, a hook plate, and an ejector rod. The pressure pad is installed on the piston rod. At the top, the hook-shaped plate is fixed on the pressure pad, the bottom of the ejector rod fits with the top surface of the pressure pad, the ejector rod is placed in the ejection hole on the base of the forging machine, and the displacement sensor is installed at the bottom of the hydraulic cylinder; the supporting mechanism includes The lower ejecting beam, column, pull rod, pre-tightening nut and positioning key, the cylinder body of the hydraulic cylinder is installed on the lower ejecting beam, the positioning key is installed at the upper and lower ports of the column, the upper ends of the four pulling rods are fixed on the base of the forging machine, and the lower ends are After passing through the column and the lower ejection beam, pre-tighten it with the pre-tightening nut, and fix the column between the lower ejection beam and the base of the forging machine. The beneficial effect is that the movement of the ejector rod is stable and reliable, and the ejection force is large; the lower ejection beam can bear greater ejection force. The magnetostrictive linear displacement sensor can ensure the displacement accuracy requirements of the ejector rod.

Description

Technical field [0001] The present invention belongs to the field of mechanical engineering technology, in particular to the lower ejection device of the heavy-duty forging machine, belongs to the auxiliary components of the heavy-duty forging machine, for ejecting and demoulding the workpiece within the lower mold. Background [0002] The lower ejection device of the existing heavy-duty forging machine is generally composed of a hydraulic cylinder pushing the ejector rod. The disadvantages of prior art are: [0003] 1. The ejection force is small and cannot meet the requirements of the use of large ejection force. [0004] 2. It cannot be guaranteed that the displacement of the ejector lever can be controlled, and the stepless program control of the ejection force cannot be realized. [0005] 3. The overall structural stiffness is low. Contents of the Invention [0006] Object of the present invention is to provide a large ejection force, structural stability, ejection displace...

AI Technical Summary

Problems solved by technology

[0003] 1. The ejection force is small, which cannot meet the requirements of larger ejection force

[0004] 2. The displacement of the ejector rod cannot be guaranteed to be controllable, and the stepless program control of the ejector force cannot be realized.

[0005] 3. Low rigidity of the overall structure

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