Horseshoe-shaped core pulling mechanism of downstream pipe fitting mold

Abstract

The invention discloses a horseshoe-shaped core pulling mechanism of a downstream pipe fitting mold. The horseshoe-shaped core pulling mechanism comprises a core pulling support; a core pulling oil cylinder, a core pulling sliding block, a connecting block and a hollow sliding base are arranged on the core pulling support; the connecting block is connected with a connecting rod, the connecting rod is provided with a connecting base, the connecting base is connected with a horseshoe core, and the horseshoe core is matched with a straight pulling core; a downstream pipe fitting formed through injection molding is arranged outside the horseshoe core and the straight pulling core, a swing base is arranged on the connecting base, a swing protruding block is arranged on the swing base, a limiting groove and a spring hole are formed in the swing protruding block, a spring pin is arranged in the spring hole, one end of the spring pin abuts against the connecting base, the spring pin is sleeved with a spring, and a limiting pin is arranged in the limiting groove; the swing protruding block is sleeved with a positioning plate, the horseshoe core is connected to the positioning plate, and the swing protruding block stretches into the horseshoe core; and the other end of the spring pin abuts against the inner wall of the horseshoe core, a positioning groove is formed in the positioning plate, the limiting pin is matched with the positioning groove, and the horseshoe core is pressed on the limiting pin.

Description

technical field [0001] The invention relates to a core-pulling mechanism for a horseshoe-shaped core of a downstream pipe fitting mold, which belongs to the field of injection molds. Background technique [0002] Injection molds are used to produce plastic pipe fittings, such as shunshui tee pipe fittings. After the product is injection molded, the product needs to be core-pulled before it can be ejected. The straight-through part of the Shun Shui three-way pipe fitting adopts a conventional direct-drawing structure, and the three-way part generally adopts a horseshoe core swing core-pulling mechanism. Collision of other parts may cause damage to the mold in serious cases; on the other hand, the horseshoe core has no auxiliary positioning structure. After the core pulling is completed, the horseshoe core hangs on the core rod without support (positioning), and it is easy to fall off (displacement) and reset. Sometimes the horseshoe core is stuck. Contents of the invention...

AI Technical Summary

Problems solved by technology

The straight part of the Shun Shui three-way pipe fitting adopts a conventional direct-drawing structure, and the three-way part generally adopts a horseshoe core-pulling mechanism. Collision of other parts may cause damage to the mold in severe cases; on the other hand, the horseshoe core has no auxiliary positioning structure. After the core pulling is completed, the horseshoe core hangs on the core rod without support (positioning), and it is easy to fall off (displacement) and reset. horseshoe core stuck

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