CN103835008A - Melt pressure control device of screw extruder - Google Patents
Melt pressure control device of screw extruder Download PDFInfo
- Publication number
- CN103835008A CN103835008A CN201210470250.2A CN201210470250A CN103835008A CN 103835008 A CN103835008 A CN 103835008A CN 201210470250 A CN201210470250 A CN 201210470250A CN 103835008 A CN103835008 A CN 103835008A
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- Prior art keywords
- pressure
- rotating speed
- motor
- screw rod
- fuzzy controller
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- 239000000155 melt Substances 0.000 claims abstract description 18
- 239000000523 sample Substances 0.000 claims description 9
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000009987 spinning Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920004934 Dacron® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a melt pressure control device of a screw extruder. The melt pressure control device of the screw extruder comprises a motor, a rotating speed sensor, a rotating speed transmitter, a pressure sensor, a pressure transmitter, a pressure setting device and a fuzzy controller. The motor drives a screw rod to rotate. The rotating speed sensor is used for detecting the rotating speed of the motor and sending a detecting result to the rotating speed transmitter. The rotating speed transmitter is used for converting received signals into rotating speed digital signals and then transmitting the rotating speed digital signals to the fuzzy controller. The pressure sensor is used for detecting the pressure of melts on an outlet of the screw rod and sending a detecting result to the pressure transmitter. The pressure transmitter is used for converting received signals into pressure digital signals and transmitting the pressure digital signals to the fuzzy controller. The pressure setting machine is used for setting the ideal value of the pressure of the melts on the outlet of the screw rod. The fuzzy controller is used for integrating the received information to obtain the rotating speed control signals of the motor according to a rule base. According to the melt pressure control device of the screw extruder, the fuzzy controller can be used for softly adjusting the rotating speed of the motor and the rotating speed of the screw rod, the fact that the motor and the screw rod are abruptly accelerated is avoided, and the service life of equipment is prolonged.
Description
Technical field
Dacron short silk slice spinning technology of the present invention, relates in particular to the melt pressure control device of screw extruder.
Background technology
Slice spinning technological process is: the section that drying is crossed, send in screw extruder and heat and be pressed into spinning solution, after continuous filter, measure and be pressed into filament spinning component by Spinning pumps (measuring pump) again, the solution thread being sprayed by spinneret orifice is through the cooling fibre bundle that forms of spinning-side blowing window.After fibre bundle cooling forming, entering needs to carry out boundling before slinning cabinet and oils, and finally forms bunch fiber, and this bunch fiber is fed to fiber barrel by feeding-wheel after six roller drawing machines.
Screw extruder is the key equipment in slice spinning technique, and its effect is conveying, melting and mixing high molecular polymer, and melt is sent, and makes it reach spinning technique requirement.The final argument of screw extruder control is not screw speed but screw rod outlet melt pressure.Existing screw extruder all adopts AC asynchronous motor transmission, frequency control.The capacity of motor depends on diameter and the running speed of screw rod.
The melt pressure control device of existing screw extruder as shown in Figure 1, pressure sensor and pressure transmitter are arranged on screw rod exit, melt pressure is converted to the signal of telecommunication and delivers to pressure regulator, pressure signal compares with pressure set points in pressure regulator, if its difference is zero, pressure regulator output signal is constant; If its difference is for just or negative, pressure regulator output control signal directly regulates motor and screw speed, and melt pressure is remained unchanged.In this control device, if the motor of control signal and the larger words of difference of screw speed and the motor moving and screw speed of adjuster output, motor and screw rod need to adjust to directly, rapidly control rotating speed, larger to the damage of motor and screw rod.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of melt pressure control device of screw extruder, by avoiding the rapid acceleration of motor and screw rod, improve the service life of motor and screw rod.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
The melt pressure control device of screw extruder, comprises pressure setting device, fuzzy controller, motor, screw rod, pressure sensor, pressure transmitter, speed probe and rotating speed transducer with rule base,
Described Motor Drive bolt rotary;
Described speed probe detects the rotating speed of motor, and testing result is flowed to rotating speed transducer;
Described rotating speed transducer is converted to the signal receiving rotating speed data signal and sends fuzzy controller to;
Described pressure sensor detects the melt pressure in screw rod exit, and testing result is flowed to pressure transmitter;
Described pressure transmitter is converted to the signal receiving pressure on the number signal and sends fuzzy controller to;
Described pressure setting device is used for the ideal value of the melt pressure of setting screw rod exit;
Described fuzzy controller, by mutually comprehensive to ideal value, pressure on the number signal and rotating speed data signal, draws the speed controling signal of motor according to rule base.
Preferably, described speed probe comprises coordinating of photoelectric code disk and porjection type photo-coupler, or comprises rotary encoder.
Fuzzy control (Fuzzy Control) is take fuzzy set theory, fuzzy language variable and fuzzy logic inference as basic a kind of intelligent control method.It from traditional controller depend on the controller design method of system action parameter different be the experience (being especially embodied in the design to rule base) that the design of fuzzy controller need to rely on operator, therefore this case can go out rule base according to operator's experience appropriate design, avoid the unexpected acceleration of motor and screw rod, with the service life of extension device.
Beneficial effect: the melt pressure control device of screw extruder provided by the invention, can soft adjusting motor and the rotating speed of screw rod by fuzzy controller, avoid the unexpected acceleration of motor and screw rod, improve the service life of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the control device of prior art.
Fig. 2 is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 2 a kind of melt pressure control device of screw extruder, comprise pressure setting device, fuzzy controller, motor, screw rod, pressure sensor, pressure transmitter, speed probe and rotating speed transducer with rule base,
Described Motor Drive bolt rotary;
Described speed probe detects the rotating speed of motor, and testing result is flowed to rotating speed transducer;
Described rotating speed transducer is converted to the signal receiving rotating speed data signal and sends fuzzy controller to;
Described pressure sensor detects the melt pressure in screw rod exit, and testing result is flowed to pressure transmitter;
Described pressure transmitter is converted to the signal receiving pressure on the number signal and sends fuzzy controller to;
Described pressure setting device is used for the ideal value of the melt pressure of setting screw rod exit;
Described fuzzy controller, by mutually comprehensive to ideal value, pressure on the number signal and rotating speed data signal, draws the speed controling signal of motor according to rule base.
Described speed probe comprises coordinating of photoelectric code disk and porjection type photo-coupler, or comprises rotary encoder.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (2)
1. the melt pressure control device of screw extruder, is characterized in that: comprise pressure setting device, fuzzy controller, motor, screw rod, pressure sensor, pressure transmitter, speed probe and rotating speed transducer with rule base,
Described Motor Drive bolt rotary;
Described speed probe detects the rotating speed of motor, and testing result is flowed to rotating speed transducer;
Described rotating speed transducer is converted to the signal receiving rotating speed data signal and sends fuzzy controller to;
Described pressure sensor detects the melt pressure in screw rod exit, and testing result is flowed to pressure transmitter;
Described pressure transmitter is converted to the signal receiving pressure on the number signal and sends fuzzy controller to;
Described pressure setting device is used for the ideal value of the melt pressure of setting screw rod exit;
Described fuzzy controller, by mutually comprehensive to ideal value, pressure on the number signal and rotating speed data signal, draws the speed controling signal of motor according to rule base.
2. the melt pressure control device of screw extruder according to claim 1, is characterized in that: described speed probe comprises coordinating of photoelectric code disk and porjection type photo-coupler, or comprises rotary encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210470250.2A CN103835008A (en) | 2012-11-20 | 2012-11-20 | Melt pressure control device of screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210470250.2A CN103835008A (en) | 2012-11-20 | 2012-11-20 | Melt pressure control device of screw extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103835008A true CN103835008A (en) | 2014-06-04 |
Family
ID=50798891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210470250.2A Pending CN103835008A (en) | 2012-11-20 | 2012-11-20 | Melt pressure control device of screw extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103835008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437516A (en) * | 2015-12-15 | 2016-03-30 | 重庆远平汽车配件有限公司 | Computer control system of screw extruder producing vehicle hose |
| CN109208088A (en) * | 2018-10-08 | 2019-01-15 | 滁州辉煌无纺科技有限公司 | A kind of PLC control spinning is molten without the high width system of gauze |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184742A (en) * | 1996-05-29 | 1998-06-17 | 方中祥 | Intelligent braking type anti-blocking-system |
| US20060216370A1 (en) * | 2005-03-28 | 2006-09-28 | Fanuc Ltd | Controller for injection molding machine |
| CN101518938A (en) * | 2008-02-29 | 2009-09-02 | 日精树脂工业株式会社 | Injection molding machine and method of controlling the same |
| CN102248659A (en) * | 2010-05-21 | 2011-11-23 | 天华化工机械及自动化研究设计院 | Extrusion constant-pressure control system for parallel double-screw extruding machine |
| CN202954153U (en) * | 2012-11-20 | 2013-05-29 | 吴江市利群纺织有限公司 | Melt pressure control device for screw extruder |
-
2012
- 2012-11-20 CN CN201210470250.2A patent/CN103835008A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1184742A (en) * | 1996-05-29 | 1998-06-17 | 方中祥 | Intelligent braking type anti-blocking-system |
| US20060216370A1 (en) * | 2005-03-28 | 2006-09-28 | Fanuc Ltd | Controller for injection molding machine |
| CN101518938A (en) * | 2008-02-29 | 2009-09-02 | 日精树脂工业株式会社 | Injection molding machine and method of controlling the same |
| CN102248659A (en) * | 2010-05-21 | 2011-11-23 | 天华化工机械及自动化研究设计院 | Extrusion constant-pressure control system for parallel double-screw extruding machine |
| CN202954153U (en) * | 2012-11-20 | 2013-05-29 | 吴江市利群纺织有限公司 | Melt pressure control device for screw extruder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437516A (en) * | 2015-12-15 | 2016-03-30 | 重庆远平汽车配件有限公司 | Computer control system of screw extruder producing vehicle hose |
| CN109208088A (en) * | 2018-10-08 | 2019-01-15 | 滁州辉煌无纺科技有限公司 | A kind of PLC control spinning is molten without the high width system of gauze |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |