CN102114675B - Electrical control system of constant pressure-type hydraulic pitch-adjusting device - Google Patents
Electrical control system of constant pressure-type hydraulic pitch-adjusting device Download PDFInfo
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- CN102114675B CN102114675B CN2010106049865A CN201010604986A CN102114675B CN 102114675 B CN102114675 B CN 102114675B CN 2010106049865 A CN2010106049865 A CN 2010106049865A CN 201010604986 A CN201010604986 A CN 201010604986A CN 102114675 B CN102114675 B CN 102114675B
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- hydraulic
- pressure
- hydraulic cylinder
- hydraulic station
- signal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
- B29B7/724—Measuring, controlling or regulating for continuous roller mixers, e.g. calenders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/52—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices with rollers or the like, e.g. calenders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses an electrical control system of a constant pressure-type hydraulic pitch-adjusting device, which comprises a hydraulic station, a solenoid valve, a pressure sensor, a displacement sensor, a PLC ( Programmable Logic Controller) and an analog-to-digital conversion module, wherein, the pressure sensor is installed in a rod cavity and a rodless cavity of a fluid cylinder in the hydraulic station; the displacement sensor is installed in the fluid cylinder in the hydraulic station; the pressure sensor and the displacement sensor transmit pressure signals and displacement signals which are detected from the hydraulic station to the PLC; and the PLC transmits the signals to the solenoid valve through the analog-to-digital conversion module. The electrical control system of the constant pressure-type hydraulic pitch-adjusting device replaces the driving and controlling of a mechanical transmission pitch-adjusting device and a hydraulic system through the fluid cylinder, improves the roller spacing control accuracy and the safety protection pressure accuracy, achieves the automatic control of the roller spacing, improves the operation reliability of an open mill, ensures the operation seriality, improves the efficiency and the 1product quality, reduces the labor intensity of operators, and meets the various requirements for a pitch-adjusting system of the open mill according to the Europe CE (Communate Europpene) safety standards.
Description
Technical field
The present invention relates to the electric control system of mill hydraulic distance-regulating device, relate in particular to a kind of constant pressure type hydraulic distance-regulating device electric control system.
Background technology
Mill is rubber, one of basic equipment that the processing of plastic industry goods is the most frequently used, the roll-setting gear of mill is the spacing of adjusting mill two rollers, make mill under different roller spacings, carry out work, and form the safety guard of mill jointly with safety device, prevent from causing roller because of the roller overload, frame, the damage of key components and parts such as bearing, because what original mill roll-setting gear adopted is motor, reductor, worm gear-endless screw, mechanical combining structure such as leading screw-nut, this structure is the problem of the following several respects of ubiquity in use: mill is roll adjustment fast during operation, the requirement that does not reach production technology; Because existence big gap in the coupling part of roll-setting gear and safety device can't be eliminated, cause the idle stroke that has when forward and back is changed in the roll adjustment process about 3mm, there is not demonstration at dial, make display scale and actual roll spacing have very large deviation; Can't open fast in the anxious stopping time, not meet the CE safety standard, influence is to carrying out the sale of CE Standard User.
Summary of the invention
The purpose of this invention is to provide a kind of by hydraulic cylinder replacement machine driving roll-setting gear; and driving and control by hydraulic system, improve the roll spacing control accuracy of mill roll adjustment system and the constant pressure type hydraulic distance-regulating device electric control system of safeguard protection pressure precision.
The technical scheme that the present invention adopts for achieving the above object is: a kind of constant pressure type hydraulic distance-regulating device electric control system, this system comprises Hydraulic Station, magnetic valve, pressure sensor, displacement transducer, controller PLC and analog-to-digital conversion module, described pressure sensor is installed in the rod chamber and rodless cavity of hydraulic cylinder in the Hydraulic Station, described displacement transducer is installed in the hydraulic cylinder in the Hydraulic Station, the pressure signal that pressure sensor and displacement transducer will detect from Hydraulic Station and displacement signal are transported in the controller PLC, and controller PLC is transferred to magnetic valve by analog-to-digital conversion module with signal.
On the control cabinet of Hydraulic Station touch-screen is installed.
Constant pressure type hydraulic distance-regulating device electric control system of the present invention; replace the machine driving roll-setting gear by hydraulic cylinder; and driving and control by hydraulic system; improve roll spacing control accuracy and the safeguard protection pressure precision of mill roll adjustment system; simultaneously; by maintenance hydraulic cylinder constant pressure and by the feedback signal of hydraulic system according to displacement transducer and pressure sensor; realize the automatic control of roll spacing; improve the functional reliability of mill; assurance work continuity; raise the efficiency and product quality; reduce operator's labour intensity; satisfy European CE safety standard to every requirement of mill roll adjustment system; by keeping the constant pressure of hydraulic cylinder inner chamber; realize the steady operation process; hydraulic cylinder is realized the adjustment of roller spacing; use displacement transducer to carry out the detection of roll spacing; the positioning accuracy of hydraulic cylinder rod can reach ± 0.2mm in; for guaranteeing accuracy of detection; displacement detecting and hydraulic cylinder rod connect together; accurately detect roller real load in the course of the work by pressure sensor; realize the accurate control of safeguard protection, cancellation machine security sheet is because the cancellation of machine security sheet; avoided the work of heavy replacing safety disc; guaranteed the work continuity of mill, by multichannel control, made the adjusting range of roll adjustment speed bigger; can realize opening fast of roll spacing, satisfy the requirement of CE safety standard.
Description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the flow chart of constant pressure type hydraulic distance-regulating device electric control system of the present invention.
Fig. 2 is constant pressure type hydraulic distance-regulating device electric control system solenoid control schematic diagram of the present invention.
Fig. 3 is constant pressure type hydraulic distance-regulating device electric control system sensor signal feedback module figure of the present invention.
Fig. 4 is constant pressure type hydraulic distance-regulating device electric control system controller PLC analog input module figure of the present invention.
The specific embodiment
As Fig. 1; Fig. 2; Fig. 3 and shown in Figure 4; constant pressure type hydraulic distance-regulating device electric control system of the present invention; comprise Hydraulic Station; magnetic valve; pressure sensor; displacement transducer; controller PLC and analog-to-digital conversion module; pressure sensor is installed in the rod chamber and rodless cavity of hydraulic cylinder in the Hydraulic Station; displacement transducer is installed in the hydraulic cylinder in the Hydraulic Station; in the pressure feedback amount that pressure sensor detects and the displacement signal input controller PLC by the displacement transducer detection; the flow of controller PLC and pressure are controlled; give magnetic valve by logical calculated output control signal; the action of control magnetic valve; its displacement and pressure are remained in mixing process in the scope of error operation; controller PLC control flow is: in the feedback quantity access controller PLC of pressure sensor and displacement transducer; transfer analog signal to data signal by analog-to-digital conversion module; in controller PLC, calculate; action by the control magnetic valve; make roller to target roll apart from fast moving; change at a slow speed behind the certain distance in the distance target roll and to advance; and after advancing to certain position; switching solenoid valve is oil-filled to the hydraulic cylinder rod chamber; reach setup pressure value and make hydraulic cylinder advance to target roll in allowed band; afterwards hydraulic cylinder two chambeies alternately are forced into rated pressure and maintenance; just can carry out normal millman afterwards does; hydraulic cylinder falls to press in the course of work; opening controlling valve carries out pressurising; skew before and after roller takes place; exceed roll spacing and set allowed band; repeat said process and rebulid pressure; whole process is by displacement signal; signal feedback such as pressure signal and control program are finished automatically; when the roller load increases; when surpassing the safeguard protection setting value; provide signal by pressure sensor; pass through control system; Hydraulic Station; hydraulic cylinder draws back roll gap fast and unloads; prevent device damage; after load reduces; roll spacing returns to the home position automatically; whole process is safe and reliable; when device looses power, also can open roller fast by accumulator.
Claims (2)
1. constant pressure type hydraulic distance-regulating device electric control system; it is characterized in that: this system comprises Hydraulic Station; magnetic valve; pressure sensor; displacement transducer; controller PLC and analog-to-digital conversion module; described pressure sensor is installed in the rod chamber and rodless cavity of hydraulic cylinder in the Hydraulic Station; described displacement transducer is installed in the hydraulic cylinder in the Hydraulic Station; the pressure signal that pressure sensor and displacement transducer will detect from Hydraulic Station and displacement signal are transported in the controller PLC; controller PLC is transferred to magnetic valve by analog-to-digital conversion module with signal; in the feedback quantity access controller PLC of pressure sensor and displacement transducer; transfer analog signal to data signal by analog-to-digital conversion module; in controller PLC, calculate; action by the control magnetic valve; make roller to target roll apart from fast moving; change at a slow speed behind the certain distance in the distance target roll and to advance; and after advancing to certain position; switching solenoid valve is oil-filled to the hydraulic cylinder rod chamber; reach setup pressure value and make hydraulic cylinder advance to target roll in allowed band; afterwards hydraulic cylinder two chambeies alternately are forced into rated pressure and maintenance; just can carry out normal millman afterwards does; hydraulic cylinder falls to press in the course of work; opening controlling valve carries out pressurising; skew before and after roller takes place; exceed roll spacing and set allowed band; repeat said process and rebulid pressure; whole process is by displacement signal; pressure signal feedback and control program are finished automatically; when the roller load increases; when surpassing the safeguard protection setting value; provide signal by pressure sensor; pass through control system; Hydraulic Station; hydraulic cylinder draws back roll gap fast and unloads; prevent device damage; after load reduced, roll spacing returned to the home position automatically.
2. a kind of constant pressure type hydraulic distance-regulating device electric control system according to claim 1 is characterized in that: on the control cabinet of Hydraulic Station touch-screen is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106049865A CN102114675B (en) | 2010-12-25 | 2010-12-25 | Electrical control system of constant pressure-type hydraulic pitch-adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106049865A CN102114675B (en) | 2010-12-25 | 2010-12-25 | Electrical control system of constant pressure-type hydraulic pitch-adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102114675A CN102114675A (en) | 2011-07-06 |
| CN102114675B true CN102114675B (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106049865A Active CN102114675B (en) | 2010-12-25 | 2010-12-25 | Electrical control system of constant pressure-type hydraulic pitch-adjusting device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605312B (en) * | 2013-10-12 | 2016-04-13 | 楚天科技股份有限公司 | The servo closed control system of freeze dryer flaggy tamponade oil cylinder |
| CN104808569B (en) * | 2014-01-28 | 2017-10-27 | 北京二十一世纪科技发展有限公司 | Mill closed loop motorized nip adjustment is controlled and active safety protection device and method |
| CN109177023A (en) * | 2018-09-26 | 2019-01-11 | 三斯达（江苏）环保科技有限公司 | A kind of moulded from foam automation mill production line and production method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2774744Y (en) * | 2005-02-03 | 2006-04-26 | 福建省三明市东辰机械制造有限责任公司 | Rubber driving belt thermal length setting device |
| CN1304622C (en) * | 2004-12-22 | 2007-03-14 | 西北工业大学 | Automatic control device of liquid solid extrusion metal base composite material |
| CN201186506Y (en) * | 2008-04-02 | 2009-01-28 | 天津市第二锻压机床厂 | Four-column high precision hydraulic press with stroke control and detection device |
| CN201941099U (en) * | 2010-12-25 | 2011-08-24 | 大连橡胶塑料机械股份有限公司 | Electric control system of constant-pressure type hydraulic spacing regulating device |
-
2010
- 2010-12-25 CN CN2010106049865A patent/CN102114675B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304622C (en) * | 2004-12-22 | 2007-03-14 | 西北工业大学 | Automatic control device of liquid solid extrusion metal base composite material |
| CN2774744Y (en) * | 2005-02-03 | 2006-04-26 | 福建省三明市东辰机械制造有限责任公司 | Rubber driving belt thermal length setting device |
| CN201186506Y (en) * | 2008-04-02 | 2009-01-28 | 天津市第二锻压机床厂 | Four-column high precision hydraulic press with stroke control and detection device |
| CN201941099U (en) * | 2010-12-25 | 2011-08-24 | 大连橡胶塑料机械股份有限公司 | Electric control system of constant-pressure type hydraulic spacing regulating device |
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| CN102114675A (en) | 2011-07-06 |
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Effective date of registration: 20170110 Address after: 116036 Ganjingzi Province, Dalian District, Hui Road, No. 18, Patentee after: DALIAN RUBBER & PLASTICS MACHINERY CO.,LTD. Address before: 116033 Ganjingzi Province, Dalian District, Hui Road, No. 18, Patentee before: Dalian Rubber & Plastics Machinery Co.,Ltd. |
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Effective date of registration: 20230824 Address after: No.18, Yinghui Road, Ganjingzi District, Dalian, Liaoning, 116036 Patentee after: DALIAN RUBBER & PLASTICS MACHINERY CO.,LTD. Patentee after: Dalian Da Xiang Machinery Manufacturing Co.,Ltd. Address before: No.18, Yinghui Road, Ganjingzi District, Dalian, Liaoning, 116036 Patentee before: DALIAN RUBBER & PLASTICS MACHINERY CO.,LTD. |