Super-large size plastic injection moulding process and its equipment

An injection molding, super-large technology, applied in the field of super-large plastic injection molding technology and equipment, can solve the problems of long flow rate of the model, can not solve the problem of single injection point, etc., and achieve the effect of reducing the locking force, reducing the processing cost and reducing the pressure
CN1394735AInactive Publication Date: 2003-02-05天津市康库得机电技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
天津市康库得机电技术有限公司
Publication Date
2003-02-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The super-large-type plastic injection moulding process includes the following steps: storage injection, premoulding mechanism is controlled by frequency converter and continuously rotated, general nitrogen gas is passed through pressure pump and one-way valve and pressed into rear portion of screw homogenizing stage and fed into the injection cylinder and storage cylinder together with molten material fully mixed with high-pressure nitrogen gas, if the process is incorrect, the molten material can be discharged out from safe discharge valve of said system. Said technological equipment is characterized by that the storage oil cylinder is connected with storage injection and premoulding mechanism, storage cylinder, injection cylinder and distributer, its one-way valve is connected with storage injection premoulding mechanism.
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Description

technical field

[0001] The invention relates to a process method and facilities for plastic molding. Background technique

[0002] At present, most plastic tray machines at home and abroad are single-point injection, the model flow rate ratio is > 1:150, the injection pressure of the machine is 110MPa, the average cavity pressure is 20-30MPa, the clamping pressure is 30000kN, and the general cost is relatively expensive.

[0003] A large-scale plastic injection molding device is disclosed in ZL96207902.2, which mainly includes storage injection molding, pre-molding mechanism, injection cylinder, distributor cylinder, and hydraulic system, storage cylinder, storage cylinder, injection cylinder, distributor, large manifold, Heat flow tube, storage cylinder, mould, movable platen, reverse push rod, press, press cylinder, product take-out car and guide rail are assembled. But the weak point of the prior art is that it still can not solve the single shot point, the flow rate ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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