Mould clamping system for injection molding machine and oil way control method for mould clamping system for injection molding machine
A mold clamping oil cylinder and oil circuit technology, which is applied in the field of injection molding machine mold clamping system and its oil circuit control, can solve the problems of lower product quality, high scrap rate, low equipment utilization rate, etc. Die rigidity, good use effect
Active Publication Date: 2016-05-04
HAITIAN PLASTICS MACHINERY GRP
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Problems solved by technology
[0003] In order to ensure the quality of injection molding products, the clamping force of the injection molding machine must be greater than the cavity pressure. The range of the clamping force of the same injection molding machine is certain, which cannot meet the molds with different cavity pressures. The utilization rate of the equipment is low, and the injection molding production time higher cost
[0004] In addition, most of the existing injection molding machines use unified control of each clamping cylinder when clamping the mold. The clamping rigidity is low, and the phenomenon of mold letting (that is, mold cracking) cannot be avoided. Injection products are prone to flashing, reducing the product quality
[0005] Especially when clamping eccentric molds, the defect of unified control of each clamping cylinder is more obvious, and it is impossible to adjust the clamping force in a targeted manner, resulting in a high scrap rate of products
Method used
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[0025] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.
[0026] Such as figure 1 As shown, the clamping system of the injection molding machine includes:
[0027] Oil tank 10, used for storing oil;
[0028] The first oil passage 21 communicates with the oil tank 10 and is used to transport oil;
[0029] The second oil passage 22 communicates with the oil tank 10 and is used to transport oil;
[0030] Clamping cylinders 30 are arranged in multiples and each clamping cylinder 30 is in communication with the first oil circuit 21;
[0031] The cutting unit corresponds to the clamping cylinder 30 one by one, and the cutting unit communicates with the second oil passage 22 and is used to drive the corresponding clamping cylinder 30 to perform clamping.
[0032] In order to avoid m...
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The invention provides a mould clamping system for an injection molding machine and belongs to the technical field of hydraulic transmission; the problem that an existing mould clamping system used for the injection molding machine has a poor mould clamping effect is solved by the mould clamping system for the injection molding machine provided by the invention. The mould clamping system for the injection molding machine comprises an oil tank, a first oil way, a second oil way, mould clamping oil cylinders and cutoff units, wherein the oil tank is used for storing oil; the first oil way communicates with the oil tank and is used for delivering the oil; the second oil way communicates with the oil tank and is used for delivering the oil; the number of the mould clamping oil cylinders is multiple, and each mould clamping oil cylinder communicates with the first oil way; the cutoff units and the mould clamping oil cylinders are in one-to-one correspondence; the cutoff units communicate with the second oil way and are used for driving the corresponding mould clamping oil cylinders to perform mould clamping. The mould clamping system disclosed by the invention has the advantages that a mould clamping force can be adjusted independently, and the mould clamping effect is good.
Description
technical field [0001] The invention belongs to the technical field of hydraulic transmission, and relates to a clamping system of an injection molding machine and an oil circuit control method thereof. Background technique [0002] Injection molding machines are usually composed of injection system, mold clamping system, hydraulic transmission system, electrical control system, lubrication system, heating and cooling system, safety monitoring system, etc. Among them, the role of the clamping system is to ensure that the mold is closed, opened and the product is ejected. At the same time, after the mold is closed, the injection molding machine supplies the mold with sufficient clamping force to resist the pressure of the mold cavity caused by the molten plastic entering the mold cavity, so as to avoid the occurrence of unqualified products caused by the mold opening. [0003] In order to ensure the quality of injection molding products, the clamping force of the injection m...
Claims
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IPC IPC(8): B29C45/67B29C45/82
CPCB29C45/67B29C45/82B29C2045/826
Inventor 郑海伟林晖吴俊俞继印邬洪亮周益辉
Owner HAITIAN PLASTICS MACHINERY GRP