Pressure device for locking mould

Abstract

The invention relates to a pressure device for locking a mould. The pressure device comprises a pushing plate, wherein the pushing plate is arranged between a mould plate of a mould assembling mechanism and a corresponding mould; a clearance is reserved between the pushing plate and the mould plate; a pressure bag is arranged in the clearance; the pressure bag is made of elastic plastic material; and a metal connector, which is connected with a hydraulic device for filling a pressure medium into the pressure bag, is formed on a side wall of the pressure bag. Compared with the prior art, the pressure device for locking the mould provided by the invention can be used together with the mould assembling mechanism of related equipment, the defects of a hydraulic mould assembling mechanism, such as complex structure, high cost, low efficiency and high oil linkage probability, can be overcome. Meanwhile, the defects that a crank shaft type mould assembling mechanism is difficult to be controlled, can be easily abraded and has low precision and short service life are also overcome. In the pressure device for locking mould, the pushing plate and the pressure bag arranged between the mould plate and the mould of the mould assembling mechanism are used for replacing a traditional oil cylinder to realize a mould locking function of the mould assembling mechanism for an industrial machine, therefore the effects of high pressure rise speed and no need of lubrication can be achieved. Besides, the pressure device has the advantages of low manufacturing cost, convenience in use, low energy consumption and long service life.

Description

Technical field [0001] The invention relates to a pressure device, in particular to a pressure device for mold clamping. Background technique [0002] In the industrial molding field, processes such as plastic injection molding, metal die-casting molding, and other products that require molding or compaction need to be operated under a certain pressure, and a clamping mechanism is usually used to provide and maintain pressure for these processes. There are usually two types of clamping mechanisms currently in use, one is a fully hydraulic clamping mechanism, and the other is a toggle lever mechanical clamping mechanism. [0003] The full hydraulic clamping mechanism pushes the movable mold plate through the cylinder installed on the machine mold plate, pushes the mold to the fixed mold plate direction to close the mold, and finally locks the mold by establishing the high pressure of the oil in the cylinder. Due to the large force required to ensure that the mold is locked, the req...

AI Technical Summary

Problems solved by technology

Because the clamping force is achieved through the elastic deformation of the system, the clamping force is not accurate, it is difficult to adjust the clamping force in different molding cycles, and the clamping force in the same molding cycle cannot be adjusted, and this mechanical clamping mechanism is relatively Difficult to lubricate, easily damaged, short service life

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