Method for producing core-pulling and resetting mechanism of injection mould

Abstract

The invention provides a method for producing a core-pulling and resetting mechanism of an injection mould. The core-pulling and resetting mechanism comprises a fixed mould (4) and a movable mould (10), wherein the movable mould (10) is provided with a locating block (8), chutes (7) and a locking block (9); and the fixed mould (4) is provided with a core-pulling slider (1), a buckle (2) and a limited block (3). The core-pulling and resetting mechanism is characterized in that springs (5) and a cylinder (6) are arranged at the lower part of the fixed mould (4). By adopting the structure in the invention, when the movable mould and the fixed mould are closed, the locking block is tightly pressed on the inclined plane of the top end of the core-pulling slider; when the movable mould and the fixed mould are separated, the springs rebound and the core-pulling slider is pulled out toward the upper inclined part along the chutes, so that the core-pulling action can not fail, thus realizing the double-safety pulling mechanism based on the springs and buckle. Because of the addition of the cylinder, when the movable mould and the fixed mould are closed, the cylinder drives the core-pulling slider to reset along the chutes, thus realizing the double-safety resetting mechanism based on the cylinder and locking block.

Description

technical field [0001] The invention relates to a mold structure of a headlamp lampshade of a large and medium-sized passenger car, in particular to a mold-opening core-pulling and mold-closing reset mechanism for fixed mold core-pulling of the lampshade. Background technique [0002] The lampshade belongs to the exterior lighting parts of the car. It is required that the product has a beautiful and novel appearance, a smooth, transparent surface and a certain strength. Therefore, the mold core-pulling mechanism is required to be effective, stable and reliable. [0003] The existing mold adopts the core-pulling structure of the fixed mold, and in the core-pulling structure of the fixed mold, the spring and buckle double safety extraction and the oil cylinder reset method are adopted. The spring mechanism is simple and effective, but unstable; the height and volume of the core-pulling slider of the spring and buckle double-safety withdrawal mechanism are relatively large, an...

AI Technical Summary

Problems solved by technology

The spring mechanism is simple and effective, but unstable; the height and volume of the core-pulling slider of the spring and buckle double-safety withdrawal mechanism are relatively large, and the locking surface at the top has a large slope, which may cause potential threat of failure of the core-pulling slider during reset

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