CN101142350A - Air spinning machine with monitoring of the spinning process by means of sensors - Google Patents
Air spinning machine with monitoring of the spinning process by means of sensors Download PDFInfo
- Publication number
- CN101142350A CN101142350A CNA2006800083506A CN200680008350A CN101142350A CN 101142350 A CN101142350 A CN 101142350A CN A2006800083506 A CNA2006800083506 A CN A2006800083506A CN 200680008350 A CN200680008350 A CN 200680008350A CN 101142350 A CN101142350 A CN 101142350A
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- spinning
- sensor
- monitoring unit
- yarn
- ingot
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/11—Spinning by false-twisting
- D01H1/115—Spinning by false-twisting using pneumatic means
-
- 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
- D01H13/20—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to excessive tension or irregular operation of apparatus
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
In air spinning machines the air vortex and the winding of the fibres are extremely important to the quality of the spun yarn (25). According to the invention, an air spinning machine is disclosed for the early detection of quality losses whereby at least one sensor (1a, 1b, 2, 3, 4) is provided per spinning post which records a physical parameter of the air vortex and/or a winding parameter. The recorded parameters are analysed in a monitoring unit and hence permit a control of the spinning process.
Description
Technical field
The present invention relates to a kind of open-end spinning frame that has a plurality of spinning ingots (spinning post) according to claim 1 preamble.
Background technology
Open-end spinning frame comprises several spinning ingots.Yarn is spinned from the longitudinal fibrous texture of supply in each spinning ingot.At this, this longitudinal fibrous texture is at first carried out refining treatment, that is to say that the fiber number of per unit length has been lowered by drawing-off.Thus, the sliver of this process refining treatment is by the twisted yarn that is spun into.This twisted process is finished by means of air-swirl.
The basic element of character according to the spinning ingot of prior art is illustrated by perspective view 1.The negative pressure that is produced by the air-swirl in the minor air cell 29 sucks the sliver 27 that is parallel orientation through thread-guide element 20.Solidifying (consolidation), also is that the spinning process of yarn 25 is achieved by means of air-swirl.The free-fiber end 26 of sliver 27 is rolled by leaked-in air and is wound the line around described sliver 27 centers.And a small amount of part in the fiber mainly is a staple fibre, then can not be pulled away but is sucked away via air channel 19 (not shown in Fig. 1).For the quality of the yarn 25 that is spun into, fiber has special importance through the suction of thread-guide element 20 and the degree both of coiling.Following situation might take place: the fiber that is not pulled away is not sucked away and blocks minor air cell 29, and this will become the interference of air-swirl or air-swirl are disturbed by other influence factors.This can cause fiber no longer to carry out optimized coiling at once.Regrettably, this negative influence in the spinning process is not often can be noted, promptly yarn breakage but spinning process still continue operation in the mode that seems " normally ", produce low-quality yarn thus, also promptly especially yarn strength descend.Because speed up to the spinning speed of 600m/min, is just produced a large amount of disabled yarns thus under unperceived situation.
Summary of the invention
Thus, the purpose of this invention is to provide a kind of open-end spinning frame that has the ingot that spins, it can detect the interference in the spinning process, can detect the continuation spinning of unavailable yarn very early with this, and stops the spinning process of so-called " normally ".
According to the present invention, this purpose can be realized by the illustrated open-end spinning frame of claim 1.
Illustrated type in the preamble of open-end spinning frame according to the present invention according to claim 1, this open-end spinning frame is configuration like this: each spinning ingot disposes a sensor that links to each other with monitoring unit, the physical parameter that it can detect air-swirl and/or treat yarn; With the device that is arranged in the monitoring unit, its time plot (profile) that can be used for detected parameter is monitored and/or is analyzed and/or describes, and/or be used for detected parameter and confirmable one or more setting value are compared, the independent monitoring of spinning process is provided for independent spinning ingot, this monitoring can detect in time because the caused adverse effect that spinning process is produced of the adverse effect of air-swirl or inadequate coiling parameter is avoided the generation of substandard product.The parameter of this record also can be by using proper device to be used for control or regulating spinning process, for example by changing feeding speed or changing via 23 air supplied pressure of air nozzle.
" physical parameter " this term comprises herein:
-treat the coiling parameter of yarn,
(bearing) pressure at-spinning ingot indicating positions place.
Treat that the coiling parameter that will be recorded of yarn refers in particular to:
The rotating speed of-sun shape fiber (fibre sun), hereinafter referred to as sun shape fiber rotating speed;
The fiber number of-sun shape fiber;
-treat the spinning tension of yarn.
Need the pressure of record relevant with suction, and comprise following measurement especially with air-swirl:
The measurement of-minor air cell internal gas pressure;
The barometric surveying at diverse location place in the-suction system;
The barometric surveying at the suction opening place of-thread-guide element.
With above-mentioned detected parameter input monitoring unit, and parameter monitored about time response, or compare with predetermined setting value.Any deviation outside a certain margin of tolerance of described setting value illustrates that all spinning process no longer normally moves.Not only can determine to change slowly but also can determine unexpected variation to the monitoring of time response.Particularly advantageous is monitoring to slow variation.Like this, the interference of correcting is got involved in the spinning process, make that therefore the yarn production with certain mass requirement is continued.
Description of drawings
Exemplary embodiment of the present invention will be described in detail with reference to accompanying drawing hereinafter, among the figure:
Fig. 1 is the perspective view that has the spinning ingot of thread-guide element and spindle;
Fig. 2 is the cutaway view that is furnished with the minor air cell of sensor;
Fig. 3 a shows the stable state curve map of the physical parameter that is write down;
Fig. 3 b shows the unsteady state curve map of the physical parameter that is write down.
The specific embodiment
Be to explain that it itself is the perspective view of known spinning box 10 that the hereinafter described fact, Fig. 1 show one, hereinafter be called spinning ingot 10, it comprises a thread-guide element 20 and a spindle 22.Sliver 27 is imported into minor air cell 29 up to 24 places, spindle hole by thread-guide element 20.The eddy current that the compressed air of being supplied by air nozzle 23 produces is with sliver 27 spun yarns 25, and yarn draws the passage drawing-off to the Winder (not shown) by the yarn of spindle 22.Fig. 1 does not show air channel 19 very accurately, and it is used to discharge air and discharges fiber.
According to the content of Fig. 1, Fig. 2 shows among the embodiment of the spinning machine according to the present invention, in the specific arrangements of the sensor at spinning ingot place.But type of sensor shown in this it is noted that and quantity independent assortment.
As everyone knows, during the air-jet spinning process, 24 can form so-called " sun shape fiber " 26 on every side in the spindle hole, and its independent fiber can be around the core coiling for the treatment of yarn 25.Be used for measuring fibre strength around the fibre winding quantity of (being actually unlocked) fiber core, and especially determined the quality of yarn that is spun into.Coiling quantity and so-called " sun shape fiber rotating speed " are directly proportional, that is to say that the rotating speed of sun shape fiber is high more, and the fibre winding quantity of contour yarn core is also just many more.
Especially, if when the rotating speed of sun shape fiber is lower than a setting value, then intensity will be lost and can cause so-called " raw silk fault (corkscrew) " under extreme case.Thus, for the spinning process of optimum, it is very important that the rotating speed of sun shape fiber is continued to remain on a desired set value.According to first kind of possible embodiment of the present invention, detect the existence of sun shape fiber with grating 2, at grating 2 places thus can be truncated to (tap) include sun shape fiber single fiber order the time phase images signal.This signal is imported a monitoring unit (not comprising in the drawings), in monitoring unit, this time phase images handle determine the rotating speed of actual sun shape fiber through signal, and selectively it is set value and compares with one.This setting value first-selection is adjustable.Result as a comparison, but setting device is adjusted transporting velocity suitably and/or is supplied to the pressure of the air of minor air cell 29.According to result relatively, also can interrupt the concurrent feed signals of spinning process of on corresponding spinning ingot 10, carrying out by monitoring unit, make this spinning ingot to check and to be rearranged by operating personnel.
Selectively or serially, by other measuring methods, as by the detection architecture noise or measure the torque M that produces at spindle 22 places and also can detect the rotating speed that obtains sun shape fiber.A) fiber of rotation produces vibration, and this vibration is shown as so-called construct noise, and is associated with the sun shape fiber rotating speed of reality.These the vibration by one or more sensors 4 for example piezoelectric transducer 4 go on record and be transported to monitoring unit.In monitoring unit, these vibrations are analyzed about its frequency and time plot.Respective change on the speed can cause the variation in the progressive or unexpected vibration.Therefore, from aforesaid vibration analysis, can infer interference in the spinning process.Under progressive or slow situation of change, can in time intervene, make and before yarn breakage, can not produce disabled yarn 25.
B) owing to the frictional force effect that produces on the conical surface of spindle 25, sun shape fiber applies a torque M, therefrom can infer the rotating speed or the spinning process of actual sun shape fiber.Torque sensor 3 (principle illustrates in Fig. 2) by means of each spinning ingot place just can be measured the torque M on the corresponding spindle 22.The signal that originates from torque sensor 3 is sent to monitoring unit equally and analyzes its time plot.Sun shape fiber change in rotational speed directly be applied to spindle 22 on torque be associated.Detected with respect to time plot and/or pre-determine and the torque variation meeting of first-selected adjustable setting value is reacted to this via monitoring unit at monitoring unit, positively intervene spinning process or end spinning process to entangle.
Except sun shape fiber rotating speed as explained above, fiber number in sun shape fiber 26 or fibre weight also are an important parameter for the quality for the treatment of yarn 25.If the fiber number in the sun shape fiber 26 increases, Rao Xian pars fibrosa also can increase so, and such result makes to treat that yarn 25 has higher intensity.Yet, should be noted in the discussion above that at this stable of yarn qualities as one is vital.Also can detect now with the fiber number that the rotating speed of sun shape fiber is not obscured mutually, also promptly: utilize grating 2, utilize vibrating sensor 4 or torque sensor 3 by sensor as aforementioned 2,4 and 3.
The fibre weight decline of sun shape fiber 26 can cause for example lower torque, and it equally can be based on time plot and/or based on detected with the comparison of predetermined setting value.
The indicator that therefore another coiling parameter of the yarn that is spun into also is used for spinning process is so-called spinning tension Fs (not shown).Because occur in fibre frictoin on spindle 22 conical surfaces, sun shape fiber not only applies a torque, but also make and from the process of yarn drawing-off passage 30 drawing-offs, be subjected to resistance at the yarn 25 that is spun into, promptly so-called spinning tension Fs.Therefore this term of spinning tension Fs can be understood as that yarn 25 drawing-offs that must be used to be spun into and what apply is the power or the drafting force of unit with [N] or [cN].Spinning tension F
SSize depend on the rotating speed and the fiber number of sun shape fiber, i.e. fibre weight in sun shape fiber 26 basically.So spinning tension F
SIt equally also is an indicator of yarn 25 quality that are used for just being spun into.Also it should be noted that spinning tension F herein
SInvariable be the measurement standard of the yarn uniformity coefficient that is spun into.Therefore, the present invention also provides a sensor that is used to measure yarn tension in a first-selected more variant embodiment.This be used to measure the signal that measures on the sensor of yarn tension also first-selection be fed to this monitoring unit or certain monitoring unit and analyze its time plot.The variation of spinning tension Fs directly is associated with the variation of spinning process, that is to say, the variation of spinning tension Fs is relevant with the rotating speed of sun shape fiber or the fibre weight (so-called fiber number) in the sun shape fiber 26.Detected spinning tension F in monitoring unit
SFirst-selection is the variation of adjustable setting value with respect to time plot and/or with respect to pre-determining also, then can trigger reaction by monitoring unit, entangle and positively intervene or the termination spinning process.According to the present invention, spinning tension F
SThereby also be used to monitor spinning process.
According to the present invention, in order to measure spinning tension F
S, a sensor can be set, be the power sensor with this sensor preferred configuration.A kind of possible embodiment that measures according to spinning tension of the present invention comprises the spinning unit that has drafting system and a pair of drawing rollers (not shown).In this case, sensor is arranged on this counter extensioin roller or on the drive unit of this counter extensioin roller.This counter extensioin roller goes out yarn 25 drawing-off from the yarn drawing-off passage 30 of spinning ingot 10 that is spun into.For this reason, this counter extensioin roller need overcome the above-mentioned spinning tension F by the generation of sun shape fiber
STherefore, measure spinning tension F at the drawing rollers place
SBe particularly advantageous (for example be applied to torque on these rollers, can calculate spinning tension at an easy rate) by record.First-selection is transported to a monitoring unit (not shown) so incite somebody to action as mentioned above at the signal that is used for measuring at yarn tension measured sensor place, and analyzes its time plot.When signal that detects and setting value had deviation or with the time plot of expection deviation arranged, monitoring unit can trigger reaction.
Spinning process can further be carried out following monitoring by means of baroceptor 1a and 1b:
A) in suction chamber 7, so-called free-fiber is sucked out via suction channel 8.In suction chamber 7, need to exist negative pressure for this purpose.This negative pressure is by means of being measured according to the pressure sensor 1a that arranges among Fig. 2.Yet its position only is exemplary.
B) fiber is that sliver 27 can be by in the thread-guide element suction vortex chambers 29 20.Produce suction by the air-swirl in the minor air cell 29.In the inside 6 of thread-guide element thereby just there is a negative pressure.By measuring this (bearing) pressure and the time plot of this pressure being monitored, can detect any inhomogeneities of spinning process by means of monitoring unit.
C) if spinning jet nozzle or minor air cell 29 are blocked, the volume flow of negative pressure and minor air cell suction will change so.Thereby, just may infer monitoring by detecting this negative pressure to volume flow.
Fig. 3 a is depicted as the characteristic of detected physical parameter, and this characteristic can infer that relevant spinning process is in stable state.When a quantitative value is specific and has exceeded the margin of tolerance of appointment, should draw the conclusion that this spinning process no longer is in stable state only so in a time period.
Can infer an example of the spinning process that no longer is in stable state in Fig. 3 b, the changeability of detected parameter is measured in assessment here.If lack the time changeability, this spinning process of so just can reaching a conclusion no longer is in stable state, and monitoring unit drives relevant spinning ingot, it is closed and sends a signal to the associative operation personnel.
According to instruction of the present invention, can draw further configuration by the sensor of above being explained is carried out independent assortment, because the record of detected physical parameter can not exert an influence basically to other physical parameters that need detect.The detection of carrying out by means of grating pair sun shape fiber will never exert an influence to utilizing piezoelectric transducer detection architecture noise.
On the contrary, physical parameter and detected value thereof depend on the state of relevant spinning ingot probably.Thereby, by detecting several suchlike physical parameters, can carry out the validity check of single record value by comparing with other detected values.
Reference numerals list:
1a is for detection of the sensor of suction chamber 7 inner air pressures
1b is for detection of the sensor of the air pressure of thread-guiding element 20 inside 6
2 gratings for detection of sun shape fiber 26
3 torque detecting elements are used for measuring the sensor of torque;
4 vibration detecting elements are used for measuring the sensor such as the vibration that is produced by construct noise
The inside of 6 thread-guide elements 20
7 suction chambers
8 suctions, suction channel
9 carry roller
10 spinning ingots
19 air channels
20 thread-guide element FFE
The inlet of the thread-guide element that 21 edge spinning directions are observed
22 spindles, hollow spindle
23 air nozzles, compressed airport
24 spindle holes; The spindle inlet; The inlet opening of yarn drawing-off passage
25 yarns
26 sun shape fibers, the part of sliver 27
27 slivers
28 minor air cell's shells
Minor air cell in the 29 twisted parts
30 yarn drawing-off passages
The torque that M is applied on the spindle 22 by sun shape fiber 26
The P air pressure, detected air pressure
Claims (12)
1. the open-end spinning frame that comprises several spinning ingots (10), wherein each spinning ingot (10) is by forming as lower member:
-minor air cell (29), several air nozzles (23) are passed into wherein producing air-swirl,
-thread-guide element (20),
-have a hollow spindle (22) in spindle hole (24),
Wherein, sliver (27) is directed in the minor air cell (29) through thread-guide element (20), and in this minor air cell, sliver (27) is spun into yarn (25) by air-swirl by the fiber (26) that winds the line, and is removed by the spindle hole of hollow spindle (22),
It is characterized in that:
Each spinning ingot (10) disposes the sensor (1a that at least one is connected to monitoring unit, 1b, 2,3,4,32), this sensor can detect air-swirl and/or treat the physical parameter of yarn (25), and is arranged on the device in the monitoring unit, be used for to detected parameter (M, p) time plot is monitored and/or is analyzed and/or describes, and/or is used for that (M p) compares with one or more definite setting values with detected parameter.
2. open-end spinning frame as claimed in claim 1 is characterized in that, sensor (1b) is configured to pressure sensor, and it detects the pressure of thread-guide element inside (6).
3. open-end spinning frame as claimed in claim 1 or 2 is characterized in that, sensor (1a) is configured to pressure sensor, and it detects the pressure in the suction chamber (7), and suction chamber (7) links to each other with minor air cell (29) herein.
4. as each described open-end spinning frame in the claim 1 to 3, it is characterized by: sensor is configured to grating (2), and it detects the sun shape fiber of locating to occur in spindle hole (24) (26).
5. open-end spinning frame as claimed in claim 4 is characterized by: in monitoring unit, can detect the rotating speed of sun shape fiber from the detection signal of grating (2) acquisition.
6. open-end spinning frame as claimed in claim 4 is characterized by: in monitoring unit, from grating (2) but the detection signal detection fibers rotating speed that obtains.
7. as each described open-end spinning frame in the claim 1 to 6, it is characterized by: sensor is configured to the torque detecting element, is used for detecting sun shape fiber (26) by rotation and is applied to torque on the spindle (22).
8. as each described open-end spinning frame in the claim 1 to 7, it is characterized by: sensor is configured to piezoelectric transducer (4), and it detects spindle (22) and goes up the vibration that exists.
9. as each described open-end spinning frame in the claim 1 to 8, it is characterized by: monitoring unit with each the spinning ingot mutually independently controller be connected, its can to detected index (M, p) (M p) controls with the control procedure that the theoretical value of determining relatively is associated for time plot and/or detected index.
10. as each described open-end spinning frame in the claim 1 to 9, it is characterized by: sensor is configured to power sensor (32), it can detect the spinning tension Fs that the yarn (25) that is spun into is located, the first-selected spinning tension Fs that detects spinning ingot (10) exit, especially preferentially, the torque detecting element that provides a sensor to locate as drawing rollers (31).
11. any in the claim as described above is characterized by: have a kind of control of spinning process based on the comparison or the device of regulation, and can regulate and control feeding speed and/or the pressure that enters minor air cell (29) whereby.
12. any in the claim as described above, it is characterized by: the monitoring unit design is as follows, according to comparative result, can interrupt the spinning process on the corresponding spinning ingot (10), and preferably, provide signal, the ingot that spins so just can be checked by operating personnel, makes it reenter normal condition as passable words.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05005713.2 | 2005-03-16 | ||
| EP05005713 | 2005-03-16 | ||
| CH1652/05 | 2005-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101142350A true CN101142350A (en) | 2008-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800083506A Pending CN101142350A (en) | 2005-03-16 | 2006-03-16 | Air spinning machine with monitoring of the spinning process by means of sensors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101142350A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060477A (en) * | 2016-11-07 | 2018-05-22 | 村田机械株式会社 | Spinning machine and Yarn spinning method |
| CN110485011A (en) * | 2019-09-30 | 2019-11-22 | 常州宏大智能装备产业发展研究院有限公司 | Ring spinning frame resultant yarn winding mechanism operating status on-line monitoring method |
-
2006
- 2006-03-16 CN CNA2006800083506A patent/CN101142350A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060477A (en) * | 2016-11-07 | 2018-05-22 | 村田机械株式会社 | Spinning machine and Yarn spinning method |
| CN108060477B (en) * | 2016-11-07 | 2021-12-10 | 村田机械株式会社 | Spinning machine and spinning method |
| CN110485011A (en) * | 2019-09-30 | 2019-11-22 | 常州宏大智能装备产业发展研究院有限公司 | Ring spinning frame resultant yarn winding mechanism operating status on-line monitoring method |
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Open date: 20080312 |