Double-acting hydraulic stretcher for composite cylinder

Abstract

The invention relates to a double-acting hydraulic stretcher for a composite cylinder, and belongs to the technical field of the plate material extending equipment. The double-acting hydraulic stretcher for the composite cylinder comprises four parallel stand columns and a rack, wherein the rack consists of an upper fixed plate, a lower fixed plate, a workbench and a base; the upper fixed plate is provided with a bidirectional hydraulic cylinder as a main cylinder hydraulic cylinder; the lower end of the piston rod of the main cylinder hydraulic cylinder penetrates through a blank pressing cylinder jacket to form a blank pressing hydraulic cylinder; an oil delivery hole is formed in the blank pressing cylinder jacket; the lower end of the blank pressing cylinder jacket is connected with an upper blank pressing die via a screw; the head part of the lower end of the piston rod of the main cylinder hydraulic cylinder is provided with an upper die; a bidirectional hydraulic cylinder is installed below the lower fixed plate to serve as an ejection hydraulic cylinder; the workbench is provided with a lower die corresponding to the upper die; the head part of the piston rod of the ejection hydraulic cylinder is provided with a lower blank pressing die. The double-acting hydraulic stretcher for the composite cylinder disclosed by the invention has the advantages of simple structure, small size, convenience in use, low cost and stable performance.

Description

technical field [0001] The invention relates to a hydraulic stretching machine, in particular to a compound cylinder double-action hydraulic stretching machine, and belongs to the technical field of sheet metal stretching equipment. It is mainly suitable for the industry of thin plate reverse stretching industry, such as: the reverse stretching of the workpiece after the thread processing of the automobile fuel port. Background technique [0002] The double-action hydraulic stretching machine is mainly used for stretching processing of metal sheets. The stretching process is: the sheet blank is placed on the lower die installed on the workbench, and the master cylinder pushes the main slider and drives the blank holder slider downward. Move until the blankholder die installed on the blankholder slider touches the periphery of the blank and presses it firmly. As the main slider continues to descend, the upper die installed on the main slider stretches the blank into shape. ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing hydraulic stretching machine with complex mechanism and many hydraulic cylinders, the present invention provides a compound cylinder double-action hydraulic stretching machine, which has the advantages of simple structure, small size, convenient use, low cost, stable performance, Advantages such as convenient debugging

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