Method for controlling shearing length of multi-length flying shear

A technology of double-scale flying shear and double-scale technology, which is applied in the direction of shearing device, shearing machine control device, manufacturing tools, etc., can solve the problems of disrupting the production rhythm, danger of operators, failure of upper cooling bed, etc., and achieve the elimination of short tail , to ensure safety, to avoid the effect of stacking steel

Active Publication Date: 2013-10-02
江苏联峰实业有限公司
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Problems solved by technology

[0004] However, in the actual production process, due to the fluctuation of the length of the billet and the fixed length of each knife in the fixed-length control mode, the double-length flying shear often cuts short ...

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  • Method for controlling shearing length of multi-length flying shear

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Embodiment 1

[0019] A device for controlling the cutting length of double-foot flying shears provided in this embodiment, its structural schematic diagram is as follows figure 1 As shown, it includes a rolling mill transmission device 2 and a double-scale flying shear 1 , and the multiple-scale flying shear 1 is arranged on both sides of the rolling mill transmission device 2 .

[0020] It also includes a front sensor, a rear sensor, a T400 controller, a main controller and a weighing device arranged below the rolling mill transmission, the front sensor is arranged at the cutting head of the double-foot flying shear, and the rear sensor It is arranged at the cutting tail of the double ruler flying shear.

[0021] The front sensor and the rear sensor are connected to the T400 controller respectively, and transmit the instantaneous signal of time to the T400 controller; The length of the rolled piece is calculated from the distance between the cutting head and the cutting tail, and the leng...

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Abstract

The invention discloses a method for controlling shearing length of a multi-length flying shear, which comprises the following steps: (1) after a rolled piece passes by a heating furnace delivery table, the weight Gn of the rolled piece is obtained; (2) a T400 controller records time Tw of the rolled piece passing through the head part and the tail part of the multi-length flying shear, and records time Tn of the whole rolled piece passing through the multi-length flying shear, so that the rolled piece length is computed through the formula: Ln=Tn*Lw/Tw; (3) after next rolled piece passes through the heating furnace delivery table, the weight Gm of the rolled piece is obtained, so that the length of the rolled piece is calculated through the formula: Lm=Gn*Ln/Gm; (4) the number of shearing times of the multi-length flying shear can be calculated through the formula: Lm tail=Lm-Sigma Lc, wherein when the Lm tail is zero or a negative value, x-1 is the number of shearing times; (5) the final specified length sheared by the multi-length flying shear can be calculated through the formula: Lz=Lm/x-1, and the rolled piece is sheared after the specified length is updated. In addition, the invention further discloses a device for controlling the shearing length of the multi-length flying shear. The method has the function of eliminating 'short tail' and avoiding steel heaping, the cold bed mounting fault is reduced, the production pace is guaranteed, and the potential safety hazard is reduced.

Description

technical field [0001] The invention relates to a method for controlling the shearing length of double-scale flying shears, more specifically, a method for controlling the shearing length of multiple-scale flying shears by using a T400 control board. Background technique [0002] In the bar production line, the double-length flying shear is the key equipment to improve the bar yield and the fixed-length yield, and it is also the key link for the rolled piece to be placed on the cooling bed after shearing. [0003] In the control system, it is often used to manually set the cutting length of each knife to be the fixed length. In the fixed length control mode, the operator sets the cutting length of each knife of the double ruler flying shear on the interface. In this case Under this condition, the operator can take into account the fixed errors and add empirical values ​​to the sizing to eliminate these fixed errors. [0004] However, in the actual production process, due t...

Claims

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Application Information

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IPC IPC(8): B23D36/00
Inventor 冯建峰
Owner 江苏联峰实业有限公司
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