Inclined core-pulling mechanism for hydraulic cylinders in metal die-casting die

Abstract

The invention relates to an inclined core-pulling mechanism for hydraulic cylinders in a metal die-casting die. Side inclined hole core pulling of a casting is completed by the die through the two hydraulic cylinders installed on one side of a die movable die, and the hydraulic cylinder, a pressing plate, a side mold core and a bearing plate are communicated so as to form a hydraulic mechanism of the die. A pouring system is composed of a main runner, a branched runner and a sprue. A first centre (8), a second centre (9) and a material pulling needle (7) are connected and fastened to form an ejection mechanism of the die. A reset rod (5) and a spring (6) form a return mechanism of the die. The die is compact in structure and good in pressure transmitting, the die moves firmly and reliably, the inclined hole core pulling motion of the casting is stable, and the mold core does not shake in the core-pulling process so that the requirement for the size accuracy of the casting can be met.

Description

technical field [0001] The invention relates to a side core-pulling mechanism of a metal die-casting mold, which is an oblique core-pulling mechanism of a hydraulic cylinder in the metal die-casting mold. Background technique [0002] In terms of side core pulling design of metal die-casting molds, there are many mechanisms used in the industry at present, and the following types of mechanisms are usually used: (1) Manual side core pulling mechanism, which includes thread core pulling, rack and pinion core pulling, Active block core pulling. (2) Motorized side core-pulling mechanism, which includes inclined guide pillar core-pulling and inclined slider core-pulling. (3) Pneumatic or electric lateral core pulling. The above types of core-pulling mechanisms are aimed at products with holes on the side wall or inner cavity or side concave, side convex, etc., which hinder the product from being demoulded directly after molding. Yes, when the mold is closed, these parts can fo...

AI Technical Summary

Problems solved by technology

Although the above-mentioned lateral core-pulling mechanisms are simple in structure and easy to manufacture, they all have the commonality of troublesome operation and low production efficiency. Although the pneumatic and electric side core-pulling mechanisms have high production efficiency, they have to be manufactured more during mold manufacturing. The auxiliary mechanism is used to install the motor or cylinder, and it is inconvenient to install and debug

Due to the larger motor or cylinder, the mold has to increase in size accordingly, which leads to an increase in mold manufacturing costs

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