Material returning device used on multi-station pressure machine

Abstract

The invention relates to a material returning device used on a multi-station pressure machine, comprising a material returning butterfly-shaped spring, a circular-pipe-shaped spring upper sleeve, a circular-pipe-shaped spring lower sleeve and a screw connected with the butterfly-shaped spring and the circular-pipe-shaped spring lower sleeve, wherein the circular-pipe-shaped spring upper sleeve is arranged at the upper part of a step hole of a working platform plate of the pressure machine by a self-lubricating bearing; a flange of the upper end of the circular-pipe-shaped spring lower sleeve is vertically fixed on the lower end surface of the working platform plate; the two ends of the butterfly-shaped spring are inserted in step holes of the circular-pipe-shaped spring upper sleeve and the circular-pipe-shaped spring lower sleeve; and the screw is sheathed in the butterfly-shaped spring, the upper end of the screw is fixed with the circular-pipe-shaped spring upper sleeve by threads, and the lower end thereof is provided with large nuts and jam nuts by threads.

Description

technical field [0001] The invention relates to a material unwinding device for a multi-station press, in particular to a material unwinding device used on a multi-station press. It belongs to the technical field of pressure machinery. Background technique [0002] At present, there are generally two types of material ejection devices for presses. One type is to install polyurethane plates or springs in the mold to realize material removal, and the other type is to use cylinders to eject. The first form is limited by the structure of the mold, and the return stroke cannot be very large. It is difficult to return the material with a large thickness. At the same time, the return force of this method is also limited. For some workpieces that require a large return force , feel powerless. Although the method of discharging material from the top of the cylinder has a large force of ejecting the material, its structure is complex, installation is difficult, and the cylinder take...

AI Technical Summary

Problems solved by technology

The first form is limited by the structure of the mold, and the return stroke cannot be very large. It is difficult to return the material with a large thickness. At the same time, the return force of this method is also limited. For some workpieces that require a large return force , feel powerless

Although the method of discharging material from the top of the cylinder has a large force of ejection, its structure is complicated, installation is difficult, and the cylinder takes up a lot of space, so it is not suitable for use on multi-station presses.

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