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A measurement method using a measuring device for fixed-length transmission of plp strips

A technology of fixed-length transmission and measurement method, which is applied in the field of rolling, and can solve the problems of pulse length fluctuation and fluctuation of the length measuring encoder, and the calculated length deviation of the conveying strip.

Active Publication Date: 2018-03-13
NORTHEASTERN UNIV LIAONING
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  • Claims
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AI Technical Summary

Problems solved by technology

Due to the fluctuation of the thickness of the incoming PLP strip, the pulse length of the length measuring encoder fluctuates, which eventually leads to a deviation between the calculated length of the conveyed strip and the actual length, and the deviation also fluctuates with the position of the pinched PLP strip.

Method used

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  • A measurement method using a measuring device for fixed-length transmission of plp strips
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  • A measurement method using a measuring device for fixed-length transmission of plp strips

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Embodiment Construction

[0048] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0049] In the embodiment of the present invention, such as figure 2 As shown, the measuring device for PLP strip fixed-length transmission includes: pinch rollers (including upper pinch roller 2 and lower pinch roller 5), length measuring encoder 4, and position sensor 1 for detecting the pinch roller gap . A computer control system 6 provided with a pulse calibration mode and a fixed-length transmission mode, wherein the length-measuring encoder 4 is arranged on the rotating shaft of the pinch roller, and the position sensor 1 is arranged on the upper pinch roller 2 of the pinch roller On the non-transmission side, the position sensor magnetic ring 7 is fixedly arranged on the lower pinch roller 5 of the pinch roller, and the output end of the position sensor 1 and the output end of the length measuring encoder 4 are connected to the input end of the...

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Abstract

The invention provides a PLP strip fixed-length conveying measurement device and method, and belongs to the technical field of rolling. The device comprises a clamping roller, a length measurement coder, a position sensor used for detecting a roller seam of the clamping roller and a computer control system having a pulse calibration manner and a fixed-length conveying manner. According to the control method, by identifying changes of the roller seam of the clamping roller, the unit pulse length of the length measurement coder of the clamping roller can be corrected in real time, high-accuracy length measurement of a PLP strip is achieved, and the measurement length error is smaller than + / -0.5 mm; and the number of shorn finished product unequal thickness plates between two times of adjustment of the PLP strip can be effectively increased.

Description

technical field [0001] The invention belongs to the technical field of rolling, and in particular relates to a measuring device and method for fixed-length transmission of PLP strips. Background technique [0002] The periodically variable thickness strip (Periodic Longitudinal Profile Strip, referred to as: PLP strip) formed by rolling is transmitted at a fixed length and then cross-cut. The obtained differential thickness plate can replace the conventional equal thickness plate, which can effectively reduce the weight of the vehicle body. The fixed-length accuracy of PLP strip transmission becomes the key to the shear yield and production efficiency of PLP strip. Compared with the fixed-length cross-cutting of conventional equal-thickness strips, the fixed-length cross-cutting of PLP strips has stricter requirements on the length accuracy of the finished plate. When the error accumulates to a certain extent, it is necessary to adjust the length of the shearing plate, othe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B38/00B21B37/70
CPCB21B37/70B21B38/00
Inventor 吴志强张广基孙涛胡贤磊刘相华
Owner NORTHEASTERN UNIV LIAONING
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