Arc core-pulling device of die-casting mould

Abstract

The invention discloses an arc core-pulling device of a die-casting mould, which comprises a guide rail (2), a moving oil cylinder (1), a rack (10), gear groups (9) which are positioned on a gear seat(3) and mutually engaged, a connecting block (6) and an arc slide block (4) which is matched with an arc inner hole of a casting, wherein the rack (10) is matched with the guide rail (2) in a slide mode and detachably connected with a piston rod of the moving oil cylinder (1); the gear groups (9) are engaged with the rack (10); and one end of the connecting block (6) is fixedly connected with thegear groups (9), while the other end is fixed connected with the arc slide block (4). After the structure of the arc core-pulling device is adopted, because an arc motion is changed into a linear motion, the mechanical motion avoids larger error caused by manual operations so as to ensure that the size precision of a molded casting is higher. Meanwhile, all the motions of the arc slide block aredriven by a hydraulic oil cylinder, thus the operation is convenient, and production working hours are greatly shortened, thereby greatly improving the production efficiency.

Description

technical field [0001] The invention relates to the technical field of core pulling for castings, in particular to an arc core pulling device for a die-casting mold. Background technique [0002] Die casting is a method of casting die forging. It is a casting method in which molten alloy liquid is poured into the pressure chamber, filled into the cavity of a steel mold at high speed, and the alloy liquid is solidified under pressure to form a casting. A die-casting mold with correct and reasonable structure is a prerequisite for the smooth progress of die-casting production. In actual production, various die-casting molds will be designed for various die-casting parts. For example, when encountering a casting with a circular arc-shaped inner hole, it is generally used to manually place a core in the cavity. This core is a meltable core, which means that the casting must be rounded after the casting is cast. The mud core in the arc section melts and flows out. This arc cor...

AI Technical Summary

Problems solved by technology

[0003] ①Because the clay core is manually placed, the error will be relatively large, for example, the position of the clay core will be deviated, that is to say, the dimensional accuracy of the molded casting is low;

[0004] ②Because the clay core is melted after casting, this leads to increased production hours and low production efficiency

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