CN104832478A - Hydraulic system for driving middle lower roller of four-roller plate bending machine - Google Patents

Hydraulic system for driving middle lower roller of four-roller plate bending machine Download PDF

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Publication number
CN104832478A
CN104832478A CN201510241120.5A CN201510241120A CN104832478A CN 104832478 A CN104832478 A CN 104832478A CN 201510241120 A CN201510241120 A CN 201510241120A CN 104832478 A CN104832478 A CN 104832478A
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CN
China
Prior art keywords
hydraulic
oil cylinder
valve
reversing valve
mouth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510241120.5A
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Chinese (zh)
Inventor
朱根龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU YAXING EXPANSION JOINT CO Ltd
Original Assignee
JIANGSU YAXING EXPANSION JOINT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU YAXING EXPANSION JOINT CO Ltd filed Critical JIANGSU YAXING EXPANSION JOINT CO Ltd
Priority to CN201510241120.5A priority Critical patent/CN104832478A/en
Publication of CN104832478A publication Critical patent/CN104832478A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/22Synchronisation of the movement of two or more servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors

Abstract

The invention discloses a hydraulic system for driving middle lower roller of a four-roller plate bending machine. The hydraulic system comprises a first hydraulic station and a second hydraulic station, wherein an oil outlet pipe of the first hydraulic station is connected onto a port P of an electro-hydraulic reversing valve; a port A of the electro-hydraulic reversing valve is connected with two branches, one branch is connected with a reversing valve VII and a lower cavity of a first oil cylinder, and the other branch is connected with a reversing valve VIII and a lower cavity of a second oil cylinder; a port B of the electro-hydraulic reversing valve is connected with two branches, one branch is connected with a throttling valve I and an upper cavity opening of the first oil cylinder, and the other branch is connected with a throttling valve II and an upper cavity of the second oil cylinder; an oil outlet pipe of the second hydraulic station is connected onto a port P of a electromagnet reversing valve, and a port A of the electromagnet reversing valve is connected with an overflow valve I and an upper cavity of a third oil cylinder; the port B of the electromagnet reversing valve is connected with an overflow valve II and a lower cavity of the third oil cylinder. The hydraulic system has the advantages that the gap between the middle lower roller and an upper roller is uniform during processing, so the production of defective products is avoided, and the working efficiency is greatly improved; the functions of reversing and resetting a overturn device are realized, and the operation is automatic.

Description

A kind of hydraulic system of middle lower roll driving of four-roll plate bending machine
Technical field
The present invention relates to plate bending rolls technical applications, the hydraulic system that the middle lower roll particularly relating to a kind of four-roll plate bending machine drives.
Background technique
Plate bending rolls is the use specializing in the curling of sheet metal and bending cylinder, is one of capital equipment in boiler, shipbuilding, petrochemical industry, cement, motor and machine-building.Under normal temperature state, sheet metal can be bent to cylinder or its part by four-roll plate bending machine, and can carry out sheet metal bend at end, this is four-roll plate bending machine part more superior to general three-wheel plate bending rolls.Meanwhile, the listing of this equipment significantly reduces the labor intensity of employee, improves the performance of enterprises.
In prior art, the synchronous rising at middle lower roll two ends is controlled by a flow divider-combiner simultaneously, in use find: in course of working, offset from roller neutral position when if steel plate is placed, due to Action of Gravity Field, just there will be the roller phenomenon that the other end rate of climb is fast near one end rate of climb of steel plate is slow.Again because of two ends simultaneously oil return, cause the position gap length between middle lower roll and top roll inconsistent, steel plate is clamped and another side loosens, finally cause processed cylindrical workpiece present one greatly, a little micro-horn shape.
Summary of the invention
In order to solve the problem existing for background technique, the hydraulic system that the middle lower roll that the object of this invention is to provide a kind of four-roll plate bending machine drives, in can ensureing, synchronously rise in lower roll two ends, identical with the gap between top roll in work; Ensure reversing device can voluntarily instead and reset.
To achieve these goals, technological scheme of the present invention is achieved in that the hydraulic system that a kind of middle lower roll of four-roll plate bending machine drives, it comprises two hydraulic stations: the first hydraulic station 1 and the second hydraulic station 2, and the oil outlet tube of described first hydraulic station 1 is connected on the P mouth of electro-hydraulic reversing valve 3; The A mouth of described electro-hydraulic reversing valve 3 connects Liang Tiao branch: the cavity of resorption of the cavity of resorption of a connection selector valve VII 7 and the first oil cylinder 5, another connection selector valve VIII 8 and the second oil cylinder 6; The B mouth of described electro-hydraulic reversing valve 3 connects Liang Tiao branch: the epicoele of the upper accent of a connection throttle valve I 9 and the first oil cylinder 5, another connection throttle valve II 10 and the second oil cylinder 6; The oil outlet tube of described second hydraulic station 2 is connected on the P mouth of electromagnet selector valve 4, and the A mouth of described electromagnet selector valve 4 connects the epicoele of relief valve I 12 and the 3rd oil cylinder 11; B mouth connects the cavity of resorption of relief valve II 13 and the 3rd oil cylinder 11.
Further, described first hydraulic station 1 is identical with the second hydraulic station 2 structure, it oil outlet tube oiling pump 15 comprising fuel tank 14 and be connected to described fuel tank 14.
The present invention has following beneficial effect: the method that during the present invention's employing flow divider-combiner abandoned in the past controls, synchronously rise in lower roll two ends, uses two unidirectional solenoid directional control valves instead and controls respectively.Ensure that in course of working, between lower roll with top roll, gap is consistent, avoids substandard products and produces, substantially increase working efficiency thus; And the present invention have make reversing device instead with reset function, operation automation.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present invention.
Description of reference numerals: the first hydraulic station 1, second hydraulic station 2, electro-hydraulic reversing valve 3, electromagnet selector valve 4, first oil cylinder 5, second oil cylinder 6, selector valve VII 7, selector valve VIII 8, throttle valve I 9, throttle valve II 10, the 3rd oil cylinder 11, relief valve I 12, relief valve II 13, fuel tank 14, oil pump 15.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
The hydraulic system of the middle lower roll driving of a kind of four-roll plate bending machine of the present invention, it comprises two hydraulic stations: the first hydraulic station 1 and the second hydraulic station 2, and the oil outlet tube of described first hydraulic station 1 is connected on the P mouth of electro-hydraulic reversing valve 3; The A mouth of described electro-hydraulic reversing valve 3 connects Liang Tiao branch: the cavity of resorption of the cavity of resorption of a connection selector valve VII 7 and the first oil cylinder 5, another connection selector valve VIII 8 and the second oil cylinder 6; The B mouth of described electro-hydraulic reversing valve 3 connects Liang Tiao branch: the epicoele of the upper accent of a connection throttle valve I 9 and the first oil cylinder 5, another connection throttle valve II 10 and the second oil cylinder 6; The oil outlet tube of described second hydraulic station 2 is connected on the P mouth of electromagnet selector valve 4, and the A mouth of described electromagnet selector valve 4 connects the epicoele of relief valve I 12 and the 3rd oil cylinder 11; B mouth connects the cavity of resorption of relief valve II 13 and the 3rd oil cylinder 11.
In the present invention, the motion of lower roll during described first hydraulic station 1 mainly drives.During work, when the electromagnet of described electro-hydraulic reversing valve 3 left end is charged, make described selector valve VII 7, selector valve VIII 8 must be electric, the A mouth oil-feed of described first oil cylinder 5, second oil cylinder 6, makes roller two ends rise, the oil return of B mouth; If when one end of described first oil cylinder 5 reaches assigned scale, one end of described second oil cylinder 6 not yet arrives, then described selector valve VII 7 power-off, described first oil cylinder 5 stops oil-feed, until when one end of described second oil cylinder 6 also arrives assigned scale, the power-off of described selector valve VIII 8, ensures that in course of working, between lower roll with top roll, gap is consistent thus; When the electromagnet of described electro-hydraulic reversing valve 3 right-hand member is charged, described selector valve VII 7, selector valve VIII 8 obtain electric, and the B mouth oil-feed of described first oil cylinder 5, second oil cylinder 6, makes roller decline, the oil return of A mouth.
In the present invention, the second hydraulic station 2 be reversing device instead with reset for pressure oil.At this moment described first hydraulic station 1 quits work, and is controlled by described electromagnet selector valve 4, and when the left end electromagnet of described electromagnet selector valve 4 is charged, instead the A mouth oil-feed of touch the pillow oil cylinder and described 3rd oil cylinder 11, make live bearing, the oil return of B mouth; When the right-hand member electromagnet of described electromagnet selector valve 4 is charged, the B mouth oil-feed of described 3rd oil cylinder 11, makes live bearing reset, the oil return of A mouth, and during its work, oil pressure is adjusted by described relief valve I 12, relief valve II 13.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, other amendments that those of ordinary skill in the art make technological scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.

Claims (2)

1. a hydraulic system for the middle lower roll driving of four-roll plate bending machine, it comprises two hydraulic stations: the first hydraulic station (1) and the second hydraulic station (2), is characterized in that, the oil outlet tube of described first hydraulic station (1) is connected on the P mouth of electro-hydraulic reversing valve (3); The A mouth of described electro-hydraulic reversing valve (3) connects Liang Tiao branch: the cavity of resorption of the cavity of resorption of a connection selector valve VII (7) and the first oil cylinder (5), another connection selector valve VIII (8) and the second oil cylinder (6); The B mouth of described electro-hydraulic reversing valve (3) connects Liang Tiao branch: the epicoele of the upper accent of a connection throttle valve I (9) and the first oil cylinder (5), another connection throttle valve II (10) and the second oil cylinder (6); The oil outlet tube of described second hydraulic station (2) is connected on the P mouth of electromagnet selector valve (4), and the A mouth of described electromagnet selector valve (4) connects the epicoele of relief valve the I (12) and the 3rd oil cylinder (11); B mouth connects the cavity of resorption of relief valve the II (13) and the 3rd oil cylinder (11).
2. the hydraulic system of the middle lower roll driving of a kind of four-roll plate bending machine according to claim 1, it is characterized in that, described first hydraulic station (1) is identical with the second hydraulic station (2) structure, it oil outlet tube oiling pump (15) comprising fuel tank (14) and be connected to described fuel tank (14).
CN201510241120.5A 2015-05-13 2015-05-13 Hydraulic system for driving middle lower roller of four-roller plate bending machine Pending CN104832478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510241120.5A CN104832478A (en) 2015-05-13 2015-05-13 Hydraulic system for driving middle lower roller of four-roller plate bending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510241120.5A CN104832478A (en) 2015-05-13 2015-05-13 Hydraulic system for driving middle lower roller of four-roller plate bending machine

Publications (1)

Publication Number Publication Date
CN104832478A true CN104832478A (en) 2015-08-12

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697437A (en) * 2016-02-03 2016-06-22 江苏久日数控机床有限公司 Hydraulic system of four-roller plate rolling machine
CN107575438A (en) * 2017-08-11 2018-01-12 江苏永钢集团有限公司 A kind of online energy conserving system of two independent hydraulic stations
CN107745020A (en) * 2017-11-16 2018-03-02 安徽德系重工科技有限公司 A kind of hydraulic system of four-roller ripple veneer reeling machine
CN112828092A (en) * 2020-12-28 2021-05-25 泰安华鲁锻压机床有限公司 Plate rolling machine device for improving workpiece rolling precision

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08100806A (en) * 1994-11-10 1996-04-16 Kayaba Ind Co Ltd Hydraulic control circuit
CN202867370U (en) * 2012-10-15 2013-04-10 湖南奥盛特重工科技有限公司 Rotation and variation amplitude oil hydraulic circuit used for hydraulic pressure drilling carriage
CN203476865U (en) * 2013-09-16 2014-03-12 福建天骏工业有限公司 Excavating machine hydraulic control system
CN103998793A (en) * 2011-10-21 2014-08-20 卡特彼勒公司 Hydraulic system
CN204610404U (en) * 2015-05-13 2015-09-02 江苏亚星波纹管有限公司 A kind of hydraulic system of middle lower roll driving of four-roll plate bending machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08100806A (en) * 1994-11-10 1996-04-16 Kayaba Ind Co Ltd Hydraulic control circuit
CN103998793A (en) * 2011-10-21 2014-08-20 卡特彼勒公司 Hydraulic system
CN202867370U (en) * 2012-10-15 2013-04-10 湖南奥盛特重工科技有限公司 Rotation and variation amplitude oil hydraulic circuit used for hydraulic pressure drilling carriage
CN203476865U (en) * 2013-09-16 2014-03-12 福建天骏工业有限公司 Excavating machine hydraulic control system
CN204610404U (en) * 2015-05-13 2015-09-02 江苏亚星波纹管有限公司 A kind of hydraulic system of middle lower roll driving of four-roll plate bending machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697437A (en) * 2016-02-03 2016-06-22 江苏久日数控机床有限公司 Hydraulic system of four-roller plate rolling machine
CN107575438A (en) * 2017-08-11 2018-01-12 江苏永钢集团有限公司 A kind of online energy conserving system of two independent hydraulic stations
CN107745020A (en) * 2017-11-16 2018-03-02 安徽德系重工科技有限公司 A kind of hydraulic system of four-roller ripple veneer reeling machine
CN107745020B (en) * 2017-11-16 2023-08-01 安徽德系重工科技有限公司 Hydraulic system of four-roller corrugated plate bending machine
CN112828092A (en) * 2020-12-28 2021-05-25 泰安华鲁锻压机床有限公司 Plate rolling machine device for improving workpiece rolling precision

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Application publication date: 20150812

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