Secondary composite core pulling mechanism for automotive water tank

Abstract

The invention discloses a secondary composite core pulling mechanism for an automotive water tank, which comprises a mold cavity and a mold core. A mold cavity insert is arranged in the mold cavity. A mold core insert is arranged in the mold core. A die cavity is formed between the mold core insert and the mold cavity insert. A water outlet of the automotive water tank is formed in the die cavity. Nicks are formed on the upper and lower sides of the water outlet respectively. A large sliding block is arranged on one side of the mold core, and is connected with a core and a small sliding block. The core is used for molding the inner wall of the water outlet, and the small sliding block is used for molding the outer wall of the water outlet. An inclined guide pillar is arranged in the mold cavity, and runs through the large sliding block. The secondary composite core pulling mechanism is characterized in that: an upper bump is formed on the mold cavity insert, and is used for molding the upper nick of the water outlet; a distance fixing bolt is arranged in the small sliding block, and is connected with the large sliding block; the lower side of the large sliding block is connected with an inclined cutting block on which a lower insertion block is arranged; a compression spring is arranged in the lower insertion block, and is in contact with the small sliding block; and a lower bump is formed on the lower insertion block, and runs through the small sliding block to form the lower nick of the water outlet.

Description

technical field [0001] The invention relates to a plastic mold for producing an automobile water tank, in particular to a secondary composite core-pulling mechanism for the automobile water tank. Background technique [0002] The car water tank is the passage for the cooling water of the car engine, and a water inlet and a drain are formed on the side of the water tank. During mold production, it is necessary to core-pulling the inner and outer walls of the drain to ensure the roundness and smooth surface of the inner and outer walls. The core pulling on the drain side is generally to install a slider on one side of the core. The slider is connected to the core. When molding, the mold opening and closing mechanism drives the cavity to open the mold, the cavity drives the inclined guide pillar, the inclined guide pillar drives the slider to slide outward, and the slider drives the core to pull the core. But, in order to make the drain outlet and the outside water pipe joint...

AI Technical Summary

Problems solved by technology

But, in order to make the drain outlet and the outside water pipe joint assemble firmly, people have designed the upper and lower sides of the drain connection to be respectively shaped on gaps, and snap rings are installed in the gaps to block the drain outlet and the water pipe joint, so that the upper and lower sides need to be aligned. , The lower gap is also demoulded, and the existing technology is difficult to demould

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