Deep-cavity product mould loose core exhaust cooling device

Abstract

The invention relates to a mould exhaust and cooling device and particularly relates to a deep-cavity product mould loose core exhaust cooling device which comprises a loose core and a water barrier,wherein an upper exhaust slot and a lower exhaust slot are formed in the outer surface of the loose core; the upper exhaust slot and the lower exhaust slot are both an annular slot; the upper exhaustslot is positoned below a glue surface; the lower exhaust slot is formed below the upper exhaust slot; a cooling hole is formed at the bottom of the loose core; the water barrier is arranged in the cooling hole; one end of the water barrier is positioned at the bottom of the cooling hole, and the other end is positioned on the outer side of the bottom of the loose core and in a cold water tank ofa lower template; the water barrier divides the cooling hole and the cold water tank into two halves; a water-through slot is formed at one end, positioned in the cooling hole, of the water barrier; awater inlet hole and a water outlet hole are formed in the side surface of the cold water tank; the water inlet hole and the water outlet hole are positioned on two sides of the water barrier. The device has the advantages of realizing a good exhaust effect, reducing the injection moulding pressure and the packaging force in mould opening, having good cooling performance, realizing exhaust and cooling at the same time, and reducing defects in production of products.

Description

technical field [0001] The invention relates to a mold exhaust and cooling device, in particular to a deep cavity product mold core-pulling exhaust cooling device. Background technique [0002] The existing deep-cavity molds have a large product tightness, and the mold opening action is often not smooth, because the push plate and the male plate cannot be opened. Excessive injection pressure will reduce the life of the movable mechanism of the injection molding machine. It will make the hydraulic system of the injection molding machine unstable for a long time, and it will easily cause burrs, overfilling, and stress concentration near the gate. [0003] The existing deep cavity mold also has poor cooling effect, resulting in lack of glue in the product, which affects the strength of the product, thereby affecting the performance of the product. The poor cooling effect also causes the mold temperature to be too high, and the high temperature causes thermal deformation of the...

AI Technical Summary

Problems solved by technology

[0002] The existing deep-cavity molds have a large product tightness, and the mold opening action is often not smooth, because the push plate and the male plate cannot be opened. Excessive injection pressure will reduce the life of the movable mechanism of the injection molding machine, which will make the hydraulic system of the injection molding machine unstable for a long time, and will easily cause bad phenomena such as burrs, overfilling, and stress concentration near the gate.

[0003] The existing deep cavity mold still has poor cooling effect, resulting in lack of glue in the product, which affects the strength of the product and thus affects the performance of the product

The poor cooling effect also causes the mold temperature to be too high, and the high temperature causes thermal deformation of the machine. The materials used in various parts of the injection molding machine are different, so the moving parts with different thermal expansion coefficients in the hydraulic components are stuck due to the smaller matching clearance, causing movement. Failure, affecting the transmission accuracy of the hydraulic system, resulting in poor working quality of components and an increase in defective products

High temperature also causes rubber seals to deform. There are rubber rings in many parts of the injection molding machine. Excessive temperature rise of the injection molding machine will deform the rubber seals, accelerate aging failure, reduce sealing performance and service life, and cause leakage.

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