Method for measuring length of steel plate

A technology of steel plate and length measurement, applied in measuring devices, instruments, and optical devices, etc., can solve the problems of complicated devices and affecting production efficiency, etc.

Inactive Publication Date: 2015-04-15
BAOSHAN IRON & STEEL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The device used in this method is too complicated, which affects production efficiency

Method used

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  • Method for measuring length of steel plate
  • Method for measuring length of steel plate
  • Method for measuring length of steel plate

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Embodiment Construction

[0040] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings of the embodiments.

[0041] The method for measuring the length of the steel plate of the present invention refers to the measuring method for the length of the sheared steel plate by cutting the head in the steel plate rolling line, see image 3 - Figure 4 , in the steel plate rolling line equipment, a laser velocimeter 32 is installed at the exit position of the shears, specifically, the laser velocimeter 32 is installed in the exit direction of the shears and away from the lower cutting edge of the shears 34 On the fixed bracket 31 at the distance L0, L0 must be smaller than the minimum section size of the steel plate 11.

[0042] Right below the laser velocimeter 32 ( Figure 4 In the direction shown by the dotted line with double dots), a reflective plate 41 is installed below the conveying roller table 33, and the reflect...

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Abstract

The invention discloses a method for measuring length of a steel plate, relates to end cutting technology of a finishing line of a thick plate production line and solves the problem that existing steel plates are low in sectional cutting accuracy. The method includes enabling an end cutting conveying roller way to start running, enabling the steel plate to move forwards, enabling a laser velocimeter mounted at an outlet of an end cutting shear and at a position of L0 away from a cutting edge of a lower shear blade of the end cutting shear to emit laser, and transmitting feedback signals when the laser irradiates the steel plate to a PLC (programmable logic controller); enabling the PLC to start performing length measuring detection on the steel plate; comparing L with target length Lm preset in the PLC; when L is equal to Lm, enabling the conveying roller way to stop running, enabling the steel plate to stop moving, starting the end cutting shear, and automatically cutting the steel plate at a position of Lm; if the last section is not cut, cutting a next section, and continuing to execute the above steps until the last section is cut. In the method, the laser velocimeter is utilized to measure length of the steel plate, so that accuracy in sectional cutting of the steel plate is improved effectively, yield is increased, and cutting efficiency is improved while labor intensity is lowered.

Description

technical field [0001] The invention relates to a cutting technology of a finishing line of a thick plate production line, in particular to a method for measuring the length of a steel plate on a thick plate shearing line. Background technique [0002] The shearing of steel plates is an important process in the production process of thick plates, which not only requires good shearing quality, but also high production efficiency. [0003] There are a large number of thick plate rolling lines, but there are still some problems in the automatic control and shearing accuracy of the thick plate shearing line equipment. The main reason is that there is a problem with the method of measuring the length of the steel plate, resulting in low cutting accuracy. [0004] In terms of steel plate measurement and positioning, many iron and steel enterprises adopt contact measurement and positioning methods. The ruler trolley is controlled, combined with the method of length measuring roll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/04
Inventor 丁海绍肖湖福刘飞孔利明
Owner BAOSHAN IRON & STEEL CO LTD
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