Prestressed stand for vertical extruder

Abstract

The invention discloses a prestressed stand for a vertical extruder. The prestressed stand comprises a base, an upper beam, a column sleeve and a pull rod, wherein the base is fixedly mounted on the ground; the upper beam is located above the base; the column sleeve is in a hollow structure and is vertically arranged between the base and the upper beam, and the two ends of the column sleeve are propped against the two opposite end surfaces on the upper beam and the base respectively; the pull rod is vertically arranged; the upper and lower ends of the pull rod pass through the upper beam and the base respectively, and the two ends are pressed against the two end surfaces back on to each other on the upper beam and the base respectively; and the part of the pull rod located between the upper beam and the base is sleeved in the column sleeve. In the invention, the column sleeve and the pull rod are adopted, the two ends of the column sleeve are propped against the two opposite end surfaces on the upper beam and the base respectively, the two ends of the pull rod are pressed against the two end surfaces back on to each other on the upper beam and the base respectively, the column sleeve only bears axial pressure, and the pull rod only bears axial tension, thus the stress on the column sleeve and the pull rod is simple, and the fatigue breakdown is not easily caused.

Description

technical field [0001] The invention relates to a vertical extrusion machine, in particular to a prestressed frame of the vertical extrusion machine. Background technique [0002] The frame is the most important part of the extrusion machine. It is not only the main body of the extrusion machine, but also installs and connects the other components, and when the extrusion machine is working, the frame also bears all the extrusion force. [0003] At present, in the vertical extruder frame of the usual column structure, the column is often the weakest link. Since the column not only supports the upper beam, the extrusion beam and the extrusion cylinder, but also bears all the extrusion force generated when the extrusion beam and the extrusion cylinder are jointly operated, the column in the current vertical extrusion machine frame not only To bear the axial tension, but also to bear the axial pressure, the axial tension and the axial pressure will also change periodically, and...

AI Technical Summary

Problems solved by technology

This greatly increases the production cost of the vertical extrusion machine, resulting in a great waste of energy, and because the vertical extrusion machine is too large, it also occupies a large area of ​​the production workshop, resulting in a waste of space

[0005] In addition, since the temperature of the extrusion cylinder can reach 500°C when extruding aluminum products, when using a vertical extrusion machine to extrude aluminum products, the temperature of the extrusion beam and the extrusion cylinder will increase, which will lead to guide gaps due to thermal expansion. Changes will affect the guiding accuracy of the extrusion beam and the extrusion cylinder, and in severe cases may even cause the extrusion beam and the extrusion cylinder to be stuck on the column

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