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[CN 201611129842.2] Control method for preventing mold damage during pressing of automatic hydraulic press
[CN 201611129842.2] Title of a control method for preventing mold damage during pressing of an automatic hydraulic press: Application number of a control method for preventing mold damage during pressing of an automatic hydraulic press: CN 201611129842.2 Applicant: Foshan Henglitai Machinery Co., Ltd. Application date: 2016-12-9 Patent type: Application of the invention The embodiment of the present invention discloses a control method for preventing mold damage during pressing of an automatic hydraulic press, including the following steps: S001, lowering of the upper mold, until the lower die is lowered into place; S002, according to the size relationship between S2 and S3, P and P1, and T and T1, it is divided into three pressing states of continuing pressing, stopping pressing and completing pressing. Then, according to the division of S2 and S1, P and P2 and pressing states, the mold sleeve is lowered, the mold sleeve is stopped, the mold sleeve is stopped and an alarm is issued. The invention controls the action of the mold sleeve according to the progressive comparison of the relative displacement S2 of the upper mold and the mold sleeve, the real-time pressure P of the main cylinder and the pressing time T, and controls the action of the mold sleeve according to the comparison result, which can effectively control the decrease of the mold sleeve in the whole pressure process, make the brick blank density more uniform from top to bottom, and effectively improve the product pass rate.
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