Method and device for controlling oil pressure of hydraulic valve stand of pinch roll of double-side shears

A control device and control method technology, applied in the direction of shearing machine control device, shearing machine accessory device, shearing device, etc., can solve the problems affecting the output and quality of steel plate products, interruption of automatic shearing sequence, pipeline vibration, etc. , to improve the cutting efficiency and cutting quality of the production line, eliminate the vibration of the pipeline, and ensure the effect of smooth control

Active Publication Date: 2021-07-13
BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, when the upper pinch roller is pressed down, the oil pressure of the hydraulic valve table will fluctuate greatly for a short time, and the pipeline will also vibrate accordingly, often causing the interruption of the automatic shearing sequence, and sometimes even causing damage to the pipeline. A large amount of hydraulic oil is leaked, which affects the output and quality of finished steel plates

Method used

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  • Method and device for controlling oil pressure of hydraulic valve stand of pinch roll of double-side shears
  • Method and device for controlling oil pressure of hydraulic valve stand of pinch roll of double-side shears
  • Method and device for controlling oil pressure of hydraulic valve stand of pinch roll of double-side shears

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Effect test

Embodiment 1

[0058] The first embodiment of the present invention provides a method for controlling the oil pressure of the hydraulic valve table of the pinch roll of double shears, which is applied to the hydraulic control device of the pinch roll. The hydraulic control device includes a hydraulic cylinder and a ratio of the hydraulic oil flow rate valve.

[0059] The double shear pinch roller hydraulic valve table is used to control the pinch roller to press the steel plate. The pinch roller is pressed so that the steel plate will not deviate. The rise and fall of the pinch roller is realized by the hydraulic cylinder. , The hydraulic oil output of the hydraulic cylinder is driven by a proportional valve. Therefore, how to drive the output of the hydraulic oil is specifically realized by controlling the opening of the proportional valve. Therefore, a method for controlling the oil pressure of the double-sided shear pinch roller hydraulic valve table proposed by the present invention incl...

Embodiment 2

[0100] Based on the same inventive concept, the embodiment of the present invention provides a double shear pinch roller hydraulic valve platform oil pressure control device, which is applied to the hydraulic control device of the pinch roller. The hydraulic control device includes a hydraulic cylinder and a control hydraulic pressure control device. Proportional valve for oil flow, such as Figure 4 shown, including:

[0101] An acquisition module 401, configured to acquire the set opening degree and the current actual opening degree of the proportional valve when it is necessary to control the pressing of the pinch roller, the set opening degree is when the pinch roller presses against the steel plate The corresponding target opening;

[0102] The control module 402 is configured to control the current actual opening of the proportional valve to gradually reach the set opening at a preset adjustment speed, so that the opening of the proportional valve changes linearly.

[...

Embodiment 3

[0127] Based on the same inventive concept, Embodiment 3 of the present invention provides a computer device, such as Figure 5 As shown, it includes a memory 504, a processor 502, and a computer program stored on the memory 504 and operable on the processor 502. When the processor 502 executes the program, it realizes the oil pressure of the hydraulic valve stage of the double shear pinch roller. steps of the control method.

[0128] Among them, in Figure 5 In, bus architecture (represented by bus 500), bus 500 may include any number of interconnected buses and bridges, bus 500 will include one or more processors represented by processor 502 and various types of memory represented by memory 504 circuits linked together. The bus 500 may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and thus will not be further described herein. The bus interface 506 provides an interf...

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PUM

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Abstract

The invention relates to the technical field of shearing control over double-side shears, in particular to a method for controlling the oil pressure of a hydraulic valve stand of a pinch roll of double-side shears, which is applied to a hydraulic control device for the pinch roll. The hydraulic control device comprises a hydraulic cylinder and a proportional valve for controlling hydraulic oil flow. The method comprises the steps that when the pinch roll needs to be controlled to press downwards, the set opening degree and the current actual opening degree of the proportional valve are acquired, and the set opening degree is the corresponding target opening degree when the pinch roll presses against a steel plate; and the current actual opening degree of the proportional valve is controlled to gradually reach the set opening degree according to the preset adjusting speed, so that the opening degree of the proportional valve is linearly changed. According to the method and the device, the phenomenon that when the pinch roll needs to press downwards in the hydraulic valve stand, when the opening degree of one proportional valve is instantaneously changed in a step change mode, the oil pressure of other opened valves excessively fluctuates can be avoided, then the stable control over the oil pressure of each valve of the hydraulic valve stand is guaranteed, and therefore the pipeline vibration caused by oil pressure fluctuation is eliminated, and the shearing efficiency and the shearing quality of a production line are improved.

Description

technical field [0001] The invention relates to the technical field of bilateral shear control, in particular to a method and device for controlling the oil pressure of a hydraulic valve table of a double shear pinch roller. Background technique [0002] In the process of shearing the steel plate, in order to prevent the deviation of the steel plate, it is necessary to use pinch rollers to exert a certain force on the steel plate during shearing. The double-sided shearing machine has 8 pinch rollers, which are 4 inlet pinch rollers and 4 outlet pinch rollers. [0003] The hydraulic valve table on the top of the double shearing machine is mainly used to control the pinch roller to press the steel plate. Under the pressing action of the pinch roller, the sheared steel plate will not be affected by external force and will not deviate. [0004] Lifting and lowering of each upper pinch roll is accomplished by a hydraulic cylinder, which in turn is driven by a proportional valve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D36/00B23D33/02B23Q7/05
CPCB23D36/00B23D33/02B23Q7/05
Inventor 黄庆刚石磊磊李长龙王海龙王宝月徐立勇刘冠权李晶晶李悦戴建新
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH
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