CN106337207A - Automatic detection device for broken wires in drawing process of polyethylene fiber and detection method thereof - Google Patents
Automatic detection device for broken wires in drawing process of polyethylene fiber and detection method thereof Download PDFInfo
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- CN106337207A CN106337207A CN201510402407.1A CN201510402407A CN106337207A CN 106337207 A CN106337207 A CN 106337207A CN 201510402407 A CN201510402407 A CN 201510402407A CN 106337207 A CN106337207 A CN 106337207A
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Abstract
The invention discloses an automatic detection device for broken wires in a drawing process of polyethylene fiber comprising temperature detection components which are corresponding to tows one by one, an ambient temperature detection component, a detection scanning circuit, a PLC, an alarm and an upper monitor system; the tow temperature signal which is detected by each temperature detection component and is transferred to the PLC through the detection scanning circuit and the ambient temperature signal which is detected by the ambient temperature detection component and is transferred to the PLC are compared to determine whether there is broken wire, wherein the PLC is connected with the alarm and the upper monitor system. The automatic detection device of the invention scans the tow temperature of each effective filament by cyclically scanning and compares it with the ambient temperature to meet the requirement of the high-performance polyethylene fiber in the automatic detection of broken wires during the drawing process; broken wires can be found timely and broken wires can be accurately located and alarm can be sent out; the device has good effect and high efficiency, reduces labor intensity and meet the requirement of automatic detection of broken wires during production process.
Description
Technical field
The present invention relates to spinning production technical field is and in particular to a kind of fracture of wire automatic detection device.
Background technology
In the drafting process in high-performance polyethylene fibres spinning process units, the application of the fracture of wire detection seen both at home and abroad, as Chinese patent " production technology of aramid fiber cored polyethylene fibre line and device ", the patent No. 201110462872.6, describe aramid fiber cored polyethylene fibre production line production technology and device, the fracture of wire in production process is detected by optical pickocff." photo-electric visits silk sensor, and " " textile machine " the 4th phase in 2004 describes and visits silk sensor detection fracture of wire with photo-electric domestic literature.
Existing photo-electric is visited silk sensor and using infrared electro principle, the kinestate of fiber is detected, when fiber is normal, due to actions such as the drawing-off of machine or windings, fiber in sensor u shape groove has shake, this shake can constantly block the transmitting of the right and left infrared light and reception in u shape groove so as to produce continuous infrared pulse；After cellosilk disconnects, this continuous infrared pulse reduces or disappears, and yarn probe is passed through to detect and judge that the frequency of infrared pulse can determine whether whether fiber disconnects.The detection of high-performance polyethylene fibres drafting process fracture of wire is located at hot tank exit, and tow is located between draft apparatus, and has many places sub-wire fork that per share tow is positioned, and tow drafting process is not almost shaken.In addition, photoelectric broken-wire detection installing space has certain requirement, there is certain effect to the single tow of loose shake, but for multiply tow side by side, between tow, distance is little, also cannot the numerous photoelectricity yarn probe of installation number, the method be not suitable for high-performance polyethylene fibres drafting process fracture of wire detection.
There is fracture of wire to occur in high-performance polyethylene fibres drafting process, need discovery in time to mend in time disconnected, only have by each road of artificial tours of inspection at present, waste time and energy and take a lot of work, inefficiency.
Content of the invention
Goal of the invention: present invention aims to the deficiencies in the prior art, a kind of polyethylene fibre drafting process fracture of wire automatic detection device and its detection method are provided, fracture of wire automatic detection device can be carried out to multiple tow simultaneously, realize automatic alarm prompting, and can determine that fracture of wire in which tow concrete.
A kind of technical scheme: polyethylene fibre drafting process fracture of wire automatic detection device, including detector unit one-to-one with tow, ambient temperature detecting element, detection scan loop, plc, alarm and upper location supervisory, the strand temperature detecting signal is passed through to detect that the ambient temperature signal detecting is delivered to plc and compared by scan loop, ambient temperature detecting element and judges whether fracture of wire, described plc is connected with alarm and upper location supervisory respectively by each detector unit.
Further, described detector unit separated by dividing guide be fixed on base so as to hot tank outlet one tow every corresponding.
Further, described detection scan loop is made up of the miniature relay being connected with detector unit one-to-one corresponding, each relay has two groups of independent contacts, by described plc circulation make each relay successively electric, each relay turn-on time is time1, corresponding for per share tow temperature signal is sent into plc by the contact of each relay by then dead electricity.Time1 is set by described upper location supervisory, and value range is 2 ~ 60 seconds.
The detection method of above-mentioned polyethylene fibre drafting process fracture of wire automatic detection device, comprises the following steps:
(1) system initialization, plc controls detection scan loop that the ambient temperature signal t0 that the temperature value t1 ~ tn signal measured by detector unit under current working and ambient temperature detecting element detect is stored in the original floor data storage portions dm1 ~ dmn of plc；
(2) plc system carries out initial analysis to original floor data, and t1 ~ tn is compared with t0 respectively, if difference is less than tem1, judges under the original operating mode in this road no tow, if difference is more than tem2, judges under the original operating mode in this road with the presence of tow；Under original operating mode after judging, the silk Taoist monastic name with the presence of tow is stored in the data-storing area that plc specifies, and initialization terminates, and system proceeds to normal detection working condition；
(3) plc passes through to detect that scan loop loop control detector unit carries out temperature detection to the silk Taoist monastic name with the presence of tow under original operating mode, the temperature value of current surveyed tow and t0 ambient temperature value are compared, if temperature gap is more than tem2, assert that tow is normal, no fracture of wire occurs；If temperature gap is less than tem1, assert that this strand of tow there occurs fracture of wire, alarm signal is sent by plc, control onsite alarming device alert, and corresponding silk Taoist monastic name is shown on alarm；Operator mend and have no progeny, and rescan and temperature gap is detected more than after tem2, assert that tow is normal, this road stubble warning device signal eliminates automatically, upper location supervisory record fracture of wire silk Taoist monastic name, fracture of wire time, benefit disconnected time.
Further, tem1 and tem2 is set by upper location supervisory, and the value range of tem1 is 8-14 DEG C, and the value range of tem2 is 15 ~ 30 DEG C.
Beneficial effect: the present invention is compared by the strand temperature in each effective road of scan round and by it with ambient temperature, meet the requirement of high-performance polyethylene fibres fracture of wire automatic detection in drafting process, can accomplish to find fracture of wire in time, accurately fracture of wire in which root silk of warning, effect is good, efficiency high, alleviates labor strength, meets the requirement to fracture of wire automatic detection for the art production process.
Brief description
Fig. 1 is the structural representation of fracture of wire automatic detection device；
Fig. 2 is the structural representation of detector unit on base；
Fig. 3 is the system schematic of fracture of wire automatic detection device.
Specific embodiment
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment: a kind of polyethylene fibre drafting process fracture of wire automatic detection device, as Fig. 1, 2, shown in 3, by detector base 1 and the detector unit t1 ~ tn separated by dividing guide p1 ~ pn is fixed on base 1, it is arranged on the ambient temperature detecting element t0 of base 1 bottom, detection scan loop 3, plc system, alarm 4 and upper location supervisory 5 form, one tow of each detector unit t1 ~ tn corresponding hot tank 2 outlet, total f1 ~ fn sub-thread tow, when through superheated header 2 drawing-off, tow enters through hot tank 2 side, go out from opposite side after heating, each sub-thread tow passes through its corresponding detector unit t1 ~ tn and is in contact with it, detector unit t1 ~ tn obtains the temperature value of tow.Detection scan loop 3 is made up of the miniature relay being connected with detector unit t1 ~ tn one-to-one corresponding, each relay has two groups of independent contacts, by plc circulation make each relay successively electric, each relay turn-on time is time1, acquiescence 5s, each corresponding temperature signal of sub-thread tow is sent into plc process by the contact of each relay by then dead electricity.Because hot tank 2 temperature is higher, tow is in hot tank 2 outlet temperature apparently higher than ambient temperature, by detecting scan loop 3, detection is circulated to each sub-thread strand temperature of hot tank 2 exit, detection temperature is compared one by one with the ambient temperature measured by ambient temperature detecting element t0, automatically confirm that by plc having or not fracture of wire occurs, plc is connected with alarm 4 and upper location supervisory 5 respectively.
The detection method of above-mentioned fracture of wire automatic detection device is, real-time temperature values t1 ~ the tn of sub-thread tow f1 ~ fn is circulated with scanning and is compared with original state temperature value t0, abnormal temperature step-down occurs, can determine that fracture of wire in which root tow, report to the police on alarm panel at the scene and recorded by upper location supervisory 5, specifically comprise the following steps that
(1) after fracture of wire detecting system starts, system initialization, plc controls detection scan loop 3 that the ambient temperature signal t0 that the temperature value t1 ~ tn signal measured by detector unit under current working and ambient temperature detecting element detect is stored in the original floor data storage portions dm1 ~ dmn of plc；
(2) plc system carries out initial analysis to original floor data, and t1 ~ tn is compared with t0 respectively, if difference is less than tem1,10 DEG C of acquiescence, judges under the original operating mode in this road no tow, if difference is more than tem2,15 DEG C of acquiescence, judges under the original operating mode in this road with the presence of tow；Under original operating mode after judging, the silk Taoist monastic name with the presence of tow is stored in the data-storing area that plc specifies, and initialization terminates, and system proceeds to normal detection working condition；
(3) plc passes through to detect that scan loop 3 loop control detector unit carries out temperature detection to the silk Taoist monastic name with the presence of tow under original operating mode, the temperature value of current surveyed tow and t0 ambient temperature value are compared, if temperature gap is more than tem2, assert that tow is normal, no fracture of wire occurs；If temperature gap is less than tem1, assert that this strand of tow there occurs fracture of wire, alarm signal is sent by plc, control onsite alarming device 4 alert, and corresponding silk Taoist monastic name is shown on alarm 4；Operator mend and have no progeny, and rescan and temperature gap is detected more than after tem2, assert that tow is normal, this road stubble warning device signal eliminates automatically, and upper location supervisory 5 records fracture of wire silk Taoist monastic name, fracture of wire time, mends the time of breaking.
Claims (6)
1. a kind of polyethylene fibre drafting process fracture of wire automatic detection device, it is characterized in that: include with tow one-to-one detector unit, ambient temperature detecting element, detection scan loop, plc, alarm and upper location supervisory, the strand temperature detecting signal is passed through to detect that the ambient temperature signal detecting is delivered to plc and compared by scan loop, ambient temperature detecting element and judges whether fracture of wire, described plc is connected with alarm and upper location supervisory respectively by each detector unit.
2. polyethylene fibre drafting process fracture of wire automatic detection device according to claim 1 it is characterised in that: described detector unit separated by dividing guide be fixed on base so as to hot tank outlet one tow every corresponding.
3. polyethylene fibre drafting process fracture of wire automatic detection device according to claim 1, it is characterized in that: described detection scan loop is made up of the miniature relay being connected with detector unit one-to-one corresponding, each relay has two groups of independent contacts, by described plc circulation make each relay successively electric, each relay turn-on time is time1, corresponding for per share tow temperature signal is sent into plc by the contact of each relay by then dead electricity.
4. polyethylene fibre drafting process fracture of wire automatic detection device according to claim 3 it is characterised in that: time1 is set by described upper location supervisory, value range be 2 ~ 60 seconds.
5. a kind of detection method of polyethylene fibre drafting process fracture of wire automatic detection device as claimed in claim 1 it is characterised in that: comprise the following steps:
(1) system initialization, plc controls detection scan loop that the ambient temperature signal t0 that the temperature value t1 ~ tn signal measured by detector unit under current working and ambient temperature detecting element detect is stored in the original floor data storage portions of plc；
(2) plc system carries out initial analysis to original floor data, and t1 ~ tn is compared with t0 respectively, if difference is less than tem1, judges under the original operating mode in this road no tow, if difference is more than tem2, judges under the original operating mode in this road with the presence of tow；Under original operating mode after judging, the silk Taoist monastic name with the presence of tow is stored in the data-storing area that plc specifies, and initialization terminates, and system proceeds to normal detection working condition；
(3) plc passes through to detect that scan loop loop control detector unit carries out temperature detection to the silk Taoist monastic name with the presence of tow under original operating mode, the temperature value of current surveyed tow and t0 ambient temperature value are compared, if temperature gap is more than tem2, assert that tow is normal, no fracture of wire occurs；If temperature gap is less than tem1, assert that this strand of tow there occurs fracture of wire, alarm signal is sent by plc, control onsite alarming device alert, and corresponding silk Taoist monastic name is shown on alarm；Operator mend and have no progeny, and rescan and temperature gap is detected more than after tem2, assert that tow is normal, this road stubble warning device signal eliminates automatically, upper location supervisory record fracture of wire silk Taoist monastic name, fracture of wire time, benefit disconnected time.
6. detection method according to claim 1 it is characterised in that: tem1 and tem2 is set by upper location supervisory, and the value range of tem1 is 8-14 DEG C, and the value range of tem2 is 15 ~ 30 DEG C.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108326206A (en) * | 2018-04-13 | 2018-07-27 | 中海油太原贵金属有限公司 | A kind of control system and warping machine and warping machine control method for warping machine |
| CN111063159A (en) * | 2019-12-26 | 2020-04-24 | 冯玉辉 | Rear spinning drafting broken yarn alarm system |
| CN113564740A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | Automatic detection device and detection method for broken filaments in fiber tow winding process |
| CN113567460A (en) * | 2020-04-29 | 2021-10-29 | 中国石油化工股份有限公司 | Automatic detection device and detection method for broken filaments in drafting process based on image recognition |
| CN113802196A (en) * | 2021-10-21 | 2021-12-17 | 荣成碳纤维科技有限公司 | Carbon fiber precursor production steam drafting device with automatic shredding and collecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113802196A (en) * | 2021-10-21 | 2021-12-17 | 荣成碳纤维科技有限公司 | Carbon fiber precursor production steam drafting device with automatic shredding and collecting device |
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| CN106337207B (en) | 2018-06-29 |
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