Demoulding mechanism for extrusion mould with side core pulling

Abstract

The invention discloses a stripping structure with the side-extraction core extruding modules, which changes the strip mechanism on the basis of original products. Remove the extension board of the crown bar board and the knockout board of the prior art, equip a hydraulic cylinder on the solidifying board above the module, which is through the pressure worktable board and on the top of the module; joint the piston rod and the crown bar board of the module together, therefore the crown bar does not have the linkage with the worktable board and independently sets the control of the hydraulic cylinder. The invention solves the problem that adopts the central pouring stoma to feed from the bottom and realizes the continuous manufacturing and program control. Compared with the prior art, the crown bar board of the invention will not misshape, the equipping of side-extraction core module is convenient, the structure is simple, and it is also suitable for the stripping of the non side-extraction core module.

Description

technical field [0001] The invention relates to the technical field of extrusion dies in metal casting, in particular to a demoulding device for extrusion dies. Background technique [0002] Compared with products produced by ordinary die-casting dies, die-casting products have a smoother surface and a denser texture. They can be used to process automotive air-conditioning parts and other products. If molten metal enters from the side of the product, it can be cast The gate is on the side of the product. Although it is easier for the product to come out of the mold, due to the difficulty of exhaust and pressure transmission, air bubbles and internal leakage often occur during T6 processing; while the gate is in the center of the product, Feeding from below can change the above situation; but the gate is in the center of the product, and after the product is formed in the extrusion die, it is difficult to take the product out of the mold; the demoulding mechanism currently us...

AI Technical Summary

Problems solved by technology

[0002] Compared with products produced by ordinary die-casting dies, die-casting products have a smoother surface and a denser texture. They can be used to process automotive air-conditioning parts and other products. If molten metal enters from the side of the product, it can be cast The gate is on the side of the product. Although it is easier for the product to come out of the mold, due to the difficulty of exhaust and pressure transmission, air bubbles and internal leakage often occur during T6 processing; while the gate is in the center of the product, Feeding from below can change the above situation; but the gate is in the center of the product, and after the product is formed in the extrusion die, it is difficult to take the product out of the mold; the demoulding mechanism currently used is to use the ejector pin after the mold is opened. The die-cast product is ejected from top to bottom, the ejector rod is fixed on the ejector rod plate, and the extended plate fixed with the ejector rod plate passes through the punching rod fixed on it and passes through the press worktable and the machine tool The mold is fixed to the press worktable. When the mold is opened, the press worktable rises and drives the mold to rise together. After the upper and lower templates are disengaged, they withdraw from the side core and are fixed to the machine tool. The punching rod, the ejector plate and the ejector pin are stationary. Due to the rise of the upper template, the die-cast products are ejected downward by the ejector pin; when closing the mold, the side core-pulling mold must be installed and locked. , and then start to move down the working table of the hydraulic press, driving the extension plate and the ejector plate to move down, the reset rod fixed on the extension plate is against the lower template, and the ejector is connected with the ejector plate, the extension plate and the punching rod together. There are the following problems in this demoulding mechanism: First, the span between the punching rods is large, the area of ​​the extension plate of the ejector plate is also large, and the contact force point with the ejector is small, and the force required for the ejector is large. The extended plate of the plate is often deformed, so that the machine cannot work normally; the second is that the side core-pulling mold must be installed and locked before the mold is closed. touch phenomenon

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