Sealability detection method for screw non-return ring of injection molding machine
A technology of screw and check ring of injection molding machine, applied in the field of injection molding, can solve the problems of unsuitable test of the sealing performance of screw check ring of injection molding machine, affecting the production time of injection molding and the length of time used.
Active Publication Date: 2016-05-25
GOERTEK INC
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Problems solved by technology
This method has high requirements on the test equipment and personnel quality on site, and takes too long, which affects the injection molding production time, and is not suitable for the on-site test of the sealing performance of the screw check ring of the injection molding machine.
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[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0024] like figure 2 As shown, the injection molding machine 1 includes a barrel 14, a nozzle 11 located at the front end of the barrel 14, a screw non-return ring 12 is arranged inside the barrel 14, a screw 13 is inserted into the barrel, and the end of the screw 13 passes through the non-return ring 12 , the non-return ring 12, the screw 13 and the barrel 14 form a closed space, and the movement of the screw 13 can make the material in the barrel 14 between the nozzle 11 and the screw 13 spray, and the anti-reverse ring 12 is located on the screw 13 and the barrel. 14 plays the role of sealing...
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The invention relates to a sealability detection method for a screw non-return ring of an injection molding machine. The sealability detection method comprises the following steps: sealing a nozzle of the injection molding machine with a testing tool; driving a screw inside the injection molding machine to move from an initial position, such that the injection molding machine is at a material spraying state to obtain a fluctuation curve of a material spraying pressure of the injection molding machine with the positions of the screw; separating the nozzle of the injection molding machine from the testing tool, and recharging the injection molding machine; repeating the above steps in sequence, wherein spraying parameters of the injection molding machine are set to be identical in each measurement process; judging whether the sealability of the screw non-return ring of the injection molding machine is favorable or not according to the similarity of the fluctuation curves of the obtained multiple material spraying pressures along with the positions of the screw. The sealability detection method for the screw non-return ring of the injection molding machine disclosed by the invention is simple in operation, high in flexibility and capable of remarkably improving the sealability detection efficiency of the screw non-return ring of the injection molding machine.
Description
technical field [0001] The invention relates to the field of injection molding, in particular to a method for testing the sealing performance of a screw anti-return ring of an injection molding machine. Background technique [0002] With the continuous improvement of people's quality requirements for injection molding products and the continuous emergence of new injection molding materials, the screw check ring, as an important part of the injection molding plasticization system, has attracted more and more attention. The screw check ring is set inside the barrel of the injection molding machine, the screw is inserted into the barrel, the end of the screw passes through the screw check ring, the end of the screw forms a closed space with the screw check ring and the barrel, and the screw is driven forward. The molten material located at the end of the screw in the barrel is sprayed for injection molding. During this process, the screw anti-return ring plays a role in preven...
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IPC IPC(8): B29C45/76
CPCB29C45/76B29C2945/76003B29C2945/76187B29C2945/76381
Inventor 王东东魏杰
Owner GOERTEK INC