Die holder pressing device of reverse extruder

Abstract

The invention relates to an auxiliary device of a reverse extruder, in particular to a die holder pressing device of the reverse extruder. The die holder pressing device comprises at least two fixing cylinders, the fixing cylinders are arranged on an upper supporting base and a lower supporting base separately and are used for tightly pressing a die holder onto a front beam base plate, each fixing cylinder comprises a cylinder body, a piston, a cover plate, an ejector rod and a reset device, the cylinder bodies are arranged on the upper supporting base and the lower supporting base separately, each piston is inserted into the corresponding cylinder body in a sliding mode, each cover plate is fixed to one end of the corresponding cylinder body, an oil inlet is formed in each cover plate and communicates with the corresponding cylinder body, one end of each ejector rod is connected to the corresponding piston, the ejector rods are movably inserted into the upper supporting base and the lower supporting base separately, and each reset device is arranged at one end of the corresponding piston and is used for resetting the piston. The invention provides the die holder pressing device of the reverse extruder, which has the advantages that the die holder can be pressed onto a front beam pressure reduction pad, so that a die shaft is stabilized at an extrusion center in the extrusion process, twisting can be avoided, and the product concentricity is effectively guaranteed.

Description

Technical field[0001]The present invention relates to a reverse extruder auxiliary device, in particular a resetting pressing device of a reverse extruder.Background technique[0002]Such asfigure 1 withfigure 2 As shown, the upper support seat 14 and the lower support seat 15 are fixed to the extruder, and the mold shaft cushion 12 is fixed to the die 21, and the front beam pad 13 and the extruder are equipped with the front beam pad 13, the mold shaft cushion The 12 is located on one side of the front beam pad 13, and the diaphragm 11 is fixed to the die 12 along the longitudinal direction of the upper support seat 14 and the lower support seat 15. The mounting block 21 is slidably and adjusted between the upper support seat 14 and the lower support seat 15. In order to ensure that the sliding die 21 is fixed, the copper plate 22 is fixed to the upper support seat 14, and the gap is required to have a gap between the molded cushion 12 and the front beam pad 13, and the gap is extrud...

AI Technical Summary

Problems solved by technology

In order to ensure that the mold base 21 can slide, the copper plate 22 is fixed on the upper support base 14, and a gap needs to be left with the mold base 21, that is, there is a gap between the mold shaft back pad 12 and the front beam backing plate 13, and the gap is pressed during extrusion. At the same time, during the extrusion process, the mold shaft 11 will be subjected to irregular forces in various directions due to the flow of aluminum, causing the mold base 21 fixed together to twist slightly, while the mold base 21 Torsion further affects the concentricity of the mold axis 11

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