Exhaust auxiliary device for plastic mould

Abstract

The invention relates to the technical field of plastic moulds, in particular to an exhaust auxiliary device for a plastic mould. The exhaust auxiliary device comprises a moving die plate and a fixeddie plate, wherein the middle of the lower portion in the moving die plate is provided with a moving die mold cavity, the middle of the upper portion in the fixed die plate is provided with a fixed die mold cavity, a mold core is arranged between the fixed die mold cavity and the moving die mold cavity, the middle in the mold core is provided with a mold core exhaust hole, the lower end of the moving die mold cavity is provided with a moving die exhaust groove, the fixed die mold cavity is internally provided with multiple exhaust inserts, channels are formed among the exhaust inserts, the lower end of the fixed die mold cavity is provided with a fixed die exhaust groove, the fixed die plate is internally provided with multiple secondary exhaust holes, the secondary exhaust holes are all communicated with the fixed die exhaust groove, the fixed die plate is internally provided with a main exhaust hole, the lower portion of one side of the fixed die plate is provided with a mounting through hole, the mounting through hole is communicated with the main exhaust hole, and the mounting through hole is internally provided with an exhaust auxiliary mechanism. The exhaust auxiliary devicefor the plastic mould has the advantages that the exhaust effect is good, the exhaust efficiency is high, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of plastic molds, in particular to an exhaust auxiliary device for plastic molds. Background technique [0002] The speed at which the injection molding machine injects plastic into the mold cavity even exceeds the speed of bullet injection. The speed is unimaginable. The injection molding machine injects plastic into the mold cavity through the nozzle with several tons of pressure. The air in the cavity must be The faster the discharge speed, the plastic can fill the mold cavity. The mold cavity is open, and the mold parting surface is tightly closed by the mold. If the gas is discharged from a very small gap, the exhaust efficiency will be low, causing the pressure of the mold cavity to rise sharply, and the parts in the mold cavity will They must be subjected to super-strong pressure, and the plastic is also solidified under strong pressure, which will cause very serious consequences. Therefore, the exh...

AI Technical Summary

Problems solved by technology

The mold cavity is open, and the mold parting surface is tightly closed by the mold. If the gas is discharged from a very small gap, the exhaust efficiency will be low, causing the pressure of the mold cavity to rise sharply, and the parts in the mold cavity will They must be subjected to super pressure, and the plastic is also solidified under strong pressure, which will cause very serious consequences

Therefore, the exhaust process is extremely important. Existing plastic molds use exhaust inserts to open exhaust grooves when it comes to mold exhaust. However, this method has poor exhaust and low efficiency. The mold cannot meet the mold exhaust requirements, resulting in poor product filling, burns, shrinkage cavities, etc.

The product forming cycle is lengthened and the production cost is increased

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