CN114855318B - Method for detecting yarn winding of rotary roller - Google Patents
Method for detecting yarn winding of rotary roller Download PDFInfo
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- CN114855318B CN114855318B CN202210434008.3A CN202210434008A CN114855318B CN 114855318 B CN114855318 B CN 114855318B CN 202210434008 A CN202210434008 A CN 202210434008A CN 114855318 B CN114855318 B CN 114855318B
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- yarn
- winding
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- drum
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- 238000004804 winding Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 abstract description 11
- 238000009987 spinning Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
Abstract
The invention discloses a method for detecting winding of a yarn by a rotary roller, which comprises the following steps: collecting yarn drum speed sensor detection at same time interval TMeasured rotation speed n of yarn drum 1 ，n 2 ，...，n i Wherein n is i The rotating speed of the yarn drum at the current moment; calculating a rotational speed difference delta n 1 ＝n 1 ‑n 2 ，Δn 2 ＝n 2 ‑n 3 ，…，Δn i‑1 ＝n i‑1 ‑n i The method comprises the steps of carrying out a first treatment on the surface of the If delta n 1 ，Δn 2 ，…，Δn i‑1 And (5) judging that the winding fault occurs when the medium has a negative value. The method is based on the existing hardware equipment, does not need to additionally add a detection sensor, can detect winding faults, and can greatly save detection cost.
Description
Technical Field
The invention relates to a fault detection method of a twisting texturing machine, in particular to a method for detecting winding of yarn of a rotary roller.
Background
As in fig. 1, the yarn winding of the automatic doffing type twisting texturing machine is realized by the following steps: the yarn guide wheel 7 and the synchronous belt 10 are driven to drive the reciprocating yarn guide 4 to move left and right by the forward and reverse rotation of the servo motor 6, so that the transverse yarn arrangement movement of yarns is realized; the winding motor 11 drives the black roller 1 to rotate at a high speed to drive the yarn drum 8 close to the black roller to realize winding motion; the resultant of the two movements is characterized by the yarn 9 being wound back and forth on the surface of the bobbin 8 in the shape of a spiral. In the process, the controller 5 processes signals collected by the yarn drum speed sensor 2 and the black roller speed sensor 3, and controls the servo motor 6 to drive the reciprocating yarn guide 4 to do left and right reciprocating motion at a proper speed.
In the automatic doffing process, the twisting texturing machine winds the black roller with very low probability, namely, the yarn is not wound on the paper tube but wound on the black roller, and under the condition, the black roller is extremely easy to be blocked to cause the fault of the whole black roller. At present, a common solution is to add a detection sensor in front of the black roll of each spindle position for detecting whether the yarn is wound on the black roll, and after the yarn is wound on the black roll, a feedback signal is sent to a control system, and the control system stops the spindle position. However, since one detection sensor is required to be added to each spindle position in the scheme, 384 or more sensors are required to be added to one machine, and the cost is high.
Disclosure of Invention
The invention aims to: the invention aims to provide a low-cost method for detecting winding of a rotating roller yarn.
The technical scheme is as follows: the method for detecting the winding of the yarn of the rotary roller comprises the following steps:
(1) Collecting the rotation speed n of the yarn drum detected by the yarn drum speed sensor at the same time interval T 1 ，n 2 ，...，n i Wherein n is i The rotating speed of the yarn drum at the current moment;
(2) Calculating a rotational speed difference delta n 1 ＝n 1 -n 2 ，Δn 2 ＝n 2 -n 3 ，…，Δn i-1 ＝n i-1 -n i ；
(3) If delta n 1 ，Δn 2 ，…，Δn i-1 And (5) judging that the winding fault occurs when the medium has a negative value.
The method is based on the existing hardware equipment, does not need to additionally add a detection sensor, can detect winding faults, and greatly saves detection cost.
Further, in step (3), if Δn in step (3) 1 ，Δn 2 ，…，Δn i-1 All have negative values and delta n 1 ＜Δn 2 ＜…＜Δn i-1 And judging that the winding fault occurs. In the case of normal spinning, Δn 1 ，Δn 2 ，…，Δn i-1 Are positive values and decrease in order from left to right, i.e. an 1 ＞Δn 2 ＞…＞Δn i-1 The method comprises the steps of carrying out a first treatment on the surface of the When spinning is abnormal and the black roll is wound by the yarn, delta n 1 ，Δn 2 ，…，Δn i-1 First, the individual values are shown to fluctuate at 0, then all slowly become negative, and have an Δn 1 ＜Δn 2 ＜…＜Δn i-1 I.e. the values increase in order from left to right. Therefore, in the technical scheme, the positive and negative of the rotating speed difference value are judged firstly, and then the rotating speed difference value is compared, so that whether the situation of black roller winding occurs can be judged more accurately.
Further, after winding faults are detected, alarming reminding is carried out, so that manual intervention is carried out in time. The alarm is triggered by a fault signal and can be realized by means of voice or lamplight alarm and the like.
Further, the time interval T may be 1s, 2s, 3s …, which is specifically determined according to the yarn type and the current diameter of the yarn package, and the larger the diameter of the yarn package is, the longer the time interval T is set. If the yarn drum is in the state of small yarn drum, 78 < d Yarn cylinder Time interval T may take 1s or 2s < 120 mm; in the case of a middle-large yarn drum, the diameter d is due to the variation of the yarn drum along with the spinning time Yarn cylinder The rate of change per unit time is reduced, e.g. when the diameter of the package is 120. Ltoreq.d Yarn cylinder When the diameter is less than or equal to 250mm, the spinning can be in a segmented form according to the requirements of the spinning varieties, for example, the spinning is divided into three segments, and d is less than or equal to 120 percent Yarn cylinder ＜165mm，165≤d Yarn cylinder ＜210mm，210≤d Yarn cylinder Less than or equal to 250mm according to the diameter d Yarn cylinder The larger the time interval T is, the longer the interval time of the corresponding segment interval is set, and then the fault is detected in segments according to the method.
Further, i has a value of at least 6.
The principle of the invention is as follows: longitudinal linear velocity v of black roll Black roller ＝πd Black roller n Black roller Longitudinal linear velocity v of yarn drum Yarn cylinder ＝πd Yarn cylinder n Yarn cylinder ，v Black roller ＝v Yarn cylinder I.e. d Black roller n Black roller ＝d Yarn cylinder n Yarn cylinder Rotational speed n of black roll Black roller The rotation speed is set by the process and is kept unchanged. Normally, the rotation speed n of the black roller Black roller And diameter d Black roller The diameter d of the yarn cylinder is unchanged and increases with time due to the winding of the yarn Yarn cylinder Will become larger gradually, thus the rotation speed n of the yarn drum Yarn cylinder Will become progressively smaller as the yarn is wound. When the black roller has winding fault, the diameter d of the black roller Black roller Gradually become larger due to the rotation speed n of the black roller Black roller The rotation speed n of the yarn cylinder is unchanged Yarn cylinder Will become progressively larger. The rotation speed of the yarn drum measured by the yarn drum speed sensor can beSuch changes range from a gradual decrease in normal spinning, to the moment at which the abnormal winding occurs, to a gradual increase in winding with the black roll.
The beneficial effects are that: compared with the prior art, the invention has the following remarkable advantages: the black roller winding fault detection can be realized on the basis of not adding the detection sensor, and the detection cost is greatly saved.
Drawings
Fig. 1 is a schematic view of the yarn winding principle of the twisting texturing machine.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Take black stick 1 diameter d Black roller 100mm, speed n Black roller The diameter of the bobbin 8 at the time of empty tube was 78mm and the diameter at the time of full tube was 250mm at 800 rpm. The bobbin 8 being in the small bobbin state, i.e. 78 < d Yarn cylinder When the black roller winding phenomenon occurs at the position with the diameter of 105mm of the yarn cylinder, the corresponding time interval T is 1s, and the corresponding time n is stored 6 times before the instant when the winding occurs Yarn cylinder The values are (in rpm) respectively:
| n 1 | n 2 | n 3 | n 4 | n 5 | n 6 |
| 808.1 | 806.2 | 804.5 | 802.9 | 801.4 | 800 |
the corresponding difference is (in rpm):
| Δn 1 | Δn 2 | Δn 3 | Δn 4 | Δn 5 |
| 1.9 | 1.7 | 1.6 | 1.5 | 1.4 |
n of 6 moments stored after the instant of black roll winding Yarn cylinder The values are (in rpm) respectively:
| n 1 | n 2 | n 3 | n 4 | n 5 | n 6 |
| 800 | 807.2 | 813.6 | 819.2 | 823.9 | 827.8 |
the corresponding difference at this time is (in rpm):
| Δn 1 | Δn 2 | Δn 3 | Δn 4 | Δn 5 |
| -7.2 | -6.4 | -5.6 | -4.7 | -3.9 |
due to Deltan 1 To delta n 5 All are negative values and are increased in turn, so that winding faults are judged, and an alarm signal is sent.
Claims (5)
1. A method for detecting winding of a rotating roller yarn in a twisting texturing machine, characterized by: the method comprises the following steps:
(1) Collecting the rotation speed n of the yarn drum detected by the yarn drum speed sensor at the same time interval T 1 ，n 2 ，...，n i Wherein n is i The rotating speed of the yarn drum at the current moment;
(2) Calculating a rotational speed difference delta n 1 ＝n 1 -n 2 ，Δn 2 ＝n 2 -n 3 ，…，Δn i-1 ＝n i-1 -n i ；
(3) If delta n 1 ，Δn 2 ，…，Δn i-1 And (5) judging that the winding fault occurs when the medium has a negative value.
2. The method according to claim 1, characterized in that: in step (3), if Δn 1 ，Δn 2 ，…，Δn i-1 All have negative values and delta n 1 ＜Δn 2 ＜…＜Δn i-1 And judging that the winding fault occurs.
3. The method according to claim 1 or 2, characterized in that: and after the winding faults are detected, alarming and reminding are carried out.
4. The method according to claim 1, characterized in that: the time interval T is determined according to the yarn variety and the diameter of the current yarn barrel, and the larger the diameter of the yarn barrel is, the longer the time interval T is set.
5. The method according to claim 1, characterized in that: i has a value of at least 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434008.3A CN114855318B (en) | 2022-04-24 | 2022-04-24 | Method for detecting yarn winding of rotary roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210434008.3A CN114855318B (en) | 2022-04-24 | 2022-04-24 | Method for detecting yarn winding of rotary roller |
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| Publication Number | Publication Date |
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| CN114855318A CN114855318A (en) | 2022-08-05 |
| CN114855318B true CN114855318B (en) | 2023-05-12 |
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| CN202210434008.3A Active CN114855318B (en) | 2022-04-24 | 2022-04-24 | Method for detecting yarn winding of rotary roller |
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| CN118756439B (en) * | 2024-09-06 | 2024-12-20 | 南通瑞泰针业有限公司 | A high performance motor structure for driving a sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT291057B (en) * | 1966-08-19 | 1971-06-25 | Rieter Ag Maschf | Shut-down device of a spinning chamber spinning machine in the event of a thread breakage |
| KR100684087B1 (en) * | 1999-05-06 | 2007-02-16 | 바마크 악티엔게젤샤프트 | Method and apparatus for winding thread fed continuously |
| DE10021963A1 (en) * | 1999-05-14 | 2000-12-21 | Barmag Barmer Maschf | Winding of yarns on cross-wound packages involves arranging the variation of traverse length to ensure that turning points are spaced round periphery |
| DE10022376A1 (en) * | 1999-05-14 | 2000-12-14 | Barmag Barmer Maschf | Cross wound bobbin winding uses controlled forward and reverse movements of the yarn guide to form a wound yarn reserve at one end of the sleeve outside the wound bobbin which remains firmly in place |
| CN101830371A (en) * | 2010-04-30 | 2010-09-15 | 江苏宏源纺机股份有限公司 | Method for winding yarns |
| CN202642970U (en) * | 2012-05-10 | 2013-01-02 | 无锡宏源机电科技有限公司 | Winding device of yarn |
| CN204549639U (en) * | 2015-04-24 | 2015-08-12 | 浙江科艺纺织有限公司 | A kind of elasticizer coiling control device |
| CN112960477B (en) * | 2021-02-03 | 2022-05-06 | 浙江理工大学 | A winding forming control method for real-time detection and dynamic tension adjustment |
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