CN113968012B - Real-time state judging method for PE separator extrusion processing - Google Patents
Real-time state judging method for PE separator extrusion processing Download PDFInfo
- Publication number
- CN113968012B CN113968012B CN202111286735.1A CN202111286735A CN113968012B CN 113968012 B CN113968012 B CN 113968012B CN 202111286735 A CN202111286735 A CN 202111286735A CN 113968012 B CN113968012 B CN 113968012B
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- China
- Prior art keywords
- real
- time
- melt pump
- current value
- monitoring
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- 238000001125 extrusion Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 title claims abstract description 13
- 239000000155 melt Substances 0.000 claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000004698 Polyethylene Substances 0.000 claims description 17
- 238000005299 abrasion Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 2
- 239000010734 process oil Substances 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 2
- 239000000463 material Substances 0.000 description 13
- 239000002253 acid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a real-time state judging method for PE separator extrusion processing, which comprises the following steps: s1, setting the temperature and the rotating speed of a PE separator raw material extruder as rated values; s2, monitoring the real-time current of the melt pump to be a value X, and monitoring the real-time current of the extruder to be a value Y; s3, monitoring the die head temperature and the die head opening condition of the melt pump in real time, and performing real-time fine adjustment to keep the die head temperature and the die head opening within the rated ranges; s4, the rotating speed of the melt pump is adjusted in real time by monitoring the current value X, when the current value X is increased, the rotating speed of the melt pump is increased, and when the current value X is reduced, the rotating speed of the melt pump is reduced.
Description
Technical Field
The invention relates to the field of processing of PE separators of lead-acid batteries, in particular to a real-time state judging method for extrusion processing of PE separators.
Background
The separator is an important component in the lead-acid battery, and the performance of the separator is directly influenced on the discharge capacity and the service life of charge and discharge cycles of the battery between the positive plate and the negative plate of the battery. The PE separator is produced by conveying, mixing, melting, mixing, metering and pressurizing through a parallel double-screw extruder, and finally extruding and molding through a flat-mouth sheet die head. The working state of the extruder system can be kept stable within a certain period after the debugging is finished in a new machine state. During this period, the viscosity of the material obtained after setting the temperature and the rotation speed is basically stable and consistent. Thus, the desired state and result can be obtained after the extrusion parameters are set. At this time, the viscosity of the material is a hidden factor, and the true influence of the viscosity is hardly found.
However, when the equipment degree is over-stable, equipment wear is increased, and the working condition of the extrusion system is changed fundamentally. The original set equipment parameters cannot achieve the expected effect, and even if the parameters are properly adjusted, the machine cannot be in a stable working state for a long time. The extruder has different abrasion loss at different stages in the use process, so that the extrusion working conditions have great variation. Under the same material conditions, extrusion temperature parameters and rotation speed, the discharge states of the dies can be greatly different. Therefore, the extrusion conditions caused by the stepwise change of the abrasion amount of the extruder screw are not fundamentally understood, so that the consistency and stability of the control product are difficult.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a real-time state judging method for PE separator extrusion processing.
A real-time status determination method for PE separator extrusion processing, comprising the steps of:
S1, setting the temperature and the rotating speed of a PE separator raw material extruder as rated values;
S2, monitoring the real-time current of the melt pump to be a value X, and monitoring the real-time current of the extruder to be a value Y;
s3, monitoring the die head temperature and the die head opening condition of the melt pump in real time, and performing real-time fine adjustment to keep the die head temperature and the die head opening within the rated ranges;
S4, adjusting the rotating speed of the melt pump in real time by monitoring the current value X, reducing the rotating speed of the melt pump when the current value X is increased, and improving the rotating speed of the melt pump when the current value X is reduced;
S5, continuing to monitor the current value X until the value X is returned to the rated range;
S6, monitoring the current value Y to judge the abrasion condition of the screw and the machine barrel, and when the current value X does not fluctuate and the current value Y fluctuates irregularly, performing extruder screw and machine barrel maintenance at the moment.
Preferably, the PE separator comprises the following raw materials: silica, ultra-high molecular weight polyethylene, process oil, preferably, the nominal range in S5 is 16±2A.
Preferably, the melt pump is a gear pump
The beneficial effects are that:
(1) Compared with the prior art, the real-time state judging method for PE partition extrusion processing provided by the invention has the advantages that the load current of the melt pump is monitored to change the rotating speed so as to offset the fluctuation caused by the remarkable change of the viscosity of the material accumulated by the abrasion of the screw rod and the machine barrel, so that the material obtains a relatively stable viscosity and passes through the melt pump, and the dynamic indirect measurement and control of the viscosity of the material are realized.
(2) The method is used for processing the materials through an extruder, so that the viscosity fluctuation is small, the rheological fluctuation after the materials enter a flat-mouth die head is also small, the die head discharge is relatively stable, and the products are kept to be stable and consistent on the basis.
Detailed Description
The present invention will be further described in detail with reference to examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
A real-time status determination method for PE separator extrusion processing, comprising the steps of:
S1, setting the temperature and the rotating speed of a PE separator raw material extruder as rated values;
S2, monitoring the real-time current of the melt pump to be a value X, and monitoring the real-time current of the extruder to be a value Y;
s3, monitoring the die head temperature and the die head opening condition of the melt pump in real time, and performing real-time fine adjustment to keep the die head temperature and the die head opening within the rated ranges;
S4, adjusting the rotating speed of the melt pump in real time by monitoring the current value X, when the current value X is increased, increasing the rotating speed of the melt pump, and when the current value X is reduced, reducing the rotating speed of the melt pump;
s5, continuing to monitor the current value X until the value X returns to 16A;
S6, monitoring the current value Y to judge the abrasion condition of the screw and the machine barrel, and when the current value X does not fluctuate and the current value Y fluctuates irregularly, performing extruder screw and machine barrel maintenance at the moment.
The invention counteracts fluctuation caused by remarkable change of the viscosity of the material accumulated by abrasion of the screw rod and the machine barrel by monitoring the load current of the melt pump so as to ensure that the material obtains a relatively stable viscosity and passes through the melt pump, thereby realizing dynamic indirect measurement and control of the viscosity of the material. The method is used for processing the materials through the extruder, so that the viscosity fluctuation is small, the rheological fluctuation after the materials enter the flat-mouth die head is also small, the die head discharging is relatively stable, and the products are kept to be stable and consistent on the basis.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The real-time state judging method for the extrusion processing of the PE separator is characterized by comprising the following steps of:
S1, setting the temperature and the rotating speed of a PE separator raw material extruder as rated values;
S2, monitoring the real-time current of the melt pump to be a value X, and monitoring the real-time current of the extruder to be a value Y;
s3, monitoring the die head temperature and the die head opening condition of the melt pump in real time, and performing real-time fine adjustment to keep the die head temperature and the die head opening within the rated ranges;
S4, adjusting the rotating speed of the melt pump in real time by monitoring the current value X, reducing the rotating speed of the melt pump when the current value X is increased, and improving the rotating speed of the melt pump when the current value X is reduced;
S5, continuing to monitor the current value X until the value X is returned to the rated range;
S6, monitoring the current value Y to judge the abrasion condition of the screw and the machine barrel, and when the current value X does not fluctuate and the current value Y fluctuates irregularly, performing extruder screw and machine barrel maintenance at the moment.
2. The method for determining the real-time status of a PE separator extrusion process according to claim 1, wherein the PE separator raw material comprises: silica, ultra high molecular weight polyethylene, process oil.
3. The method for determining the real-time status of extrusion processing of a PE separator according to claim 1, wherein the rated range in S5 is 16±2A.
4. The method for determining the real-time status of a PE separator extrusion process of claim 1, wherein the melt pump is a gear pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286735.1A CN113968012B (en) | 2021-11-02 | 2021-11-02 | Real-time state judging method for PE separator extrusion processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111286735.1A CN113968012B (en) | 2021-11-02 | 2021-11-02 | Real-time state judging method for PE separator extrusion processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113968012A CN113968012A (en) | 2022-01-25 |
| CN113968012B true CN113968012B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111286735.1A Active CN113968012B (en) | 2021-11-02 | 2021-11-02 | Real-time state judging method for PE separator extrusion processing |
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| WO1995001252A1 (en) * | 1993-06-29 | 1995-01-12 | Gregor Hofbauer Gmbh | Process and device for producing blow moulded parts |
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| JPH10109354A (en) * | 1996-10-07 | 1998-04-28 | Toshiba Mach Co Ltd | Automatic running system of production line |
| JP2000071316A (en) * | 1998-09-03 | 2000-03-07 | Sekisui Chem Co Ltd | Automatic starting method for thermoplastic resin extrusion molding machine and production of resin molded product using the same |
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| CN113968012A (en) | 2022-01-25 |
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