CN1165210A - Yarn breakage detecting device of doubled yarn false twister - Google Patents

Yarn breakage detecting device of doubled yarn false twister Download PDF

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Publication number
CN1165210A
CN1165210A CN 97104220 CN97104220A CN1165210A CN 1165210 A CN1165210 A CN 1165210A CN 97104220 CN97104220 CN 97104220 CN 97104220 A CN97104220 A CN 97104220A CN 1165210 A CN1165210 A CN 1165210A
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CN
China
Prior art keywords
yarn
untwisting tension
tension
doubling
breaking
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Granted
Application number
CN 97104220
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Chinese (zh)
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CN1057574C (en
Inventor
刀祢昭一
永田晴久
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Murata Machinery Ltd
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Murata Machinery Ltd
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Publication of CN1165210A publication Critical patent/CN1165210A/en
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Publication of CN1057574C publication Critical patent/CN1057574C/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/04—Devices for imparting false twist
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/026—Doubling winders, i.e. for winding two or more parallel yarns on a bobbin, e.g. in preparation for twisting or weaving
    • 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
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • 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
    • 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
    • D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

The present invention discloses a simple yarn breakage detecting device, characterized in, a doubled yarn false twisting machine producing false twist processed yarn of a conjugated yarn is provided with a control device for cutting all the yarns of the doubled yarn when one yarn of among a plurality of yarns that are doubled breaks. The tension detection device detects the untwisting tension, when the untwisting tension is lower than a fixed value, detecting and cutting said single yarn.

Description

The apparatus for detection of breaking of yarn of doubling false twisting machine
The invention relates to the apparatus for detection of breaking of yarn of the doubling false twisting machine of the false-twisted yarn of producing composite yarn.This doubling false twisting machine has when in the yarn that constitutes composite yarn wherein during a yarn breakage, cuts off the control device of all yarns.
S twist yarn and the doublings of Z twist yarn that thickness is different with characteristic can be made into no torque yarn.Be that many yarns are processed through false twisting.Can be made into composite yarn by the doubling of plying treating apparatus.
To false twisting machine, because of feeding roller is fed composite yarn or single thread forcibly, even when breaking end in the yarn way, the yarn of broken end upstream side is still constantly sent and is twined on the machine, therefore need cut off yarn before the upstream side feeding roller.Whether the general electrostatic apparatus for detection of breaking of yarn that uses has yarn because of it can only detect location detection at it, so during the yarn when this apparatus for detection of breaking of yarn is used for the doubling false twisting machine doubling after, be not then can not effectively detect when all breaking end as if the yarn of formation composite yarn.That is can not detect when, a yarn in constituting composite yarn does not also break end.In order to detect the upstream side of broken end, false twisting processing is not had the upstream side of first feeding roller of influence the mechanical type apparatus for detection of breaking of yarn is installed, the inspection of breaking end of every before doubling yarn in doubling.
The synoptic diagram of technology in the past as shown in Figure 6, the mechanical type apparatus for detection of breaking of yarn is between the cutting machine 2 and the first feeding roller FR1.
The yarn Y of feeding is through cutting machine 2, mechanical type apparatus for detection of breaking of yarn 4, and carry out false twisting processing through the first feeding roller FR1, heater H 1, coldplate L2, a false-twisting device 9, and by untwisting tension checkout gear 1 detection untwisting tension, after carrying out doubling by plying treating apparatus IL, batch through apparatus for detection of breaking of yarn and by the composite yarn of batching apparatus W after with doubling.
At this moment, if in the back of first feeding roller, in the yarn of formation composite yarn a broken end is arranged, and the axle that twines feeding roller is when going up, because of there is yarn Y at mechanism formula apparatus for detection of breaking of yarn 4 places, and the single thread that constitutes composite yarn more than is arranged at electrostatic apparatus for detection of breaking of yarn 3 places, so broken end can not be detected.
About apparatus for detection of breaking of yarn, being used in the past has a mechanical type and electrostatic on the false twisting machine.Stretch yarn in yarn feeding has partly used charged preventor, electrostatic apparatus for detection of breaking of yarn is to detect whether existing of yarn with static content, charged hardly because of yarn, whether very difficult detection has yarn, so use to detect by contacting with yarn whether the mechanical type of yarn apparatus for detection of breaking of yarn is arranged.This charged preventor loses effectiveness after meeting heat immediately, so to the yarn of a heater back, use does not contact yarn and to the undamaged electrostatic apparatus for detection of breaking of yarn of yarn.
As mentioned above, the mechanical type apparatus for detection of breaking of yarn is positioned at the first feeding roller upstream side, if produce broken end, then might continue to produce bad yarn because of the single thread broken end of not finding composite yarn when broken end is arranged in the dirty place of checkout gear.In addition, though the end of the yarn of the broken end of downstream side is batched by coiling package, the loose thread of upstream side might not batched and the axle that is wound roller into waits the rotation position.After yarn is rotated the position and twines, will be continued to send forward and formed bulk.Even if apparatus for detection of breaking of yarn can not detect broken end at this moment.The worst situation is that machine is stopped, and removes the bulk yarn that twines.Therefore, apparatus for detection of breaking of yarn will be positioned at the downstream side of batching apparatus as far as possible.
But as previously mentioned, the broken end that electrostatic and mechanical type apparatus for detection of breaking of yarn is not suitable for after the doubling detects, and electrostatic apparatus for detection of breaking of yarn can detect the single thread broken end under the doubling state, is high performance device, but because of too expensive and impracticable.
The problem that exists for the technology that solves before above-mentioned the purpose of this invention is to provide a kind of simple apparatus for detection of breaking of yarn, and in addition, it detects broken end and with all yarns cut-outs of doubling when a broken end is arranged in the many yarns of the downstream side doubling of first feeding roller.
In order to achieve the above object, the present invention takes following technical scheme:
The apparatus for detection of breaking of yarn of doubling false twisting machine is characterized in that:
The doubling false twisting machine of production doubling false-twisted yarn has control device, when one of many single thread that constitute doubling broken end, cut off whole doublings, detect untwisting tension by tension detecting apparatus, when untwisting tension was lower than certain value, detecting had above-mentioned single thread to be cut off.
The apparatus for detection of breaking of yarn of described doubling false twisting machine is characterized in that:
Limit range of management making a concerted effort of the untwisting tension of many single thread of tension detecting apparatus mensuration formation composite yarn, is judged as broken end when untwisting tension reduces to go beyond the scope.
The apparatus for detection of breaking of yarn of described doubling false twisting machine is characterized in that:
Its formation is the interlock that can freely cut to the cutting machine of all single thread of cutting off composite yarn.
The apparatus for detection of breaking of yarn of doubling false twisting machine, its spy is:
When having when one of many single thread that constitute doubling broken end for one, cut off in the doubling false twisting machine of production doubling false-twisted yarn of control device of all yarns, detect untwisting tension by tension detecting apparatus, when untwisting tension is lower than certain value, detect one of above-mentioned yarn broken end.
The apparatus for detection of breaking of yarn of described yarn false twisting machine is characterized in that:
Limit range of management making a concerted effort of the untwisting tension of many yarns of tension detecting apparatus mensuration formation doubling, is judged as broken end when untwisting tension reduces to exceed this scope.
The apparatus for detection of breaking of yarn of described doubling false twisting machine, its spy is:
Apparatus for detection of breaking of yarn can freely connect or disjunction with the interlock of the cutting machine that cuts off all yarns that constitute doubling.
Therefore, as mentioned above, can will detect the tension detecting apparatus of untwisting tension, after judging broken end according to tension variation, the control device of control cutting machine work connects.The untwisting tension that detects is relevant with the state of yarn, when surpassing common mobility scale step-down, is judged as broken end and cutting machine is started.The tension value of control cutting machine motion when tension value is zero, considers that error is decided to be near zero, perhaps is decided to be untwisting tension and deducts the mentioned strain mobility scale.
In foregoing invention,, when a yarn breakage, have only its corresponding untwisting tension partly to change because of the untwisting tension of composite yarn untwisting tension sum for each yarn of constituting composite yarn.Because of untwisting tension often changes,, might not mean that only the untwisting tension of broken end partly changes when in the yarn that constitutes composite yarn during a broken end.Therefore, limit range of management, when untwisting tension was reduced to above this scope, whether cop did not break end and all allows cutting machine work.
In foregoing invention, when with doubling false twisting machine processing single thread, with the interlock disjunction of tension detecting apparatus and cutting machine.
Good effect of the present invention:
Because the present invention has above-mentioned formation, so have following effect.
Because as long as the program of change control untwisting tension and cutting machine just can be utilized existing doubling false twisting machine, so this change is a very economical to the false twisting machine that is using.In addition, resemble near first feeding roller in the past, the method that each root yarn is established a mechanical type apparatus for detection of breaking of yarn can not adopt, thus can reduce required part and the manpower of repacking machinery, and can reduce cost.
When breaking end, when twine the yarn end,,, the single thread that constitutes composite yarn can not detect broken end between first feeding roller and untwisting tension checkout gear because of having more than one to electrostatic apparatus for detection of breaking of yarn.And to the untwisting tension checkout gear, detect the big change of untwisting tension, non-detectable broken end before can detecting.And prevent that bad composite yarn from continuing the phenomenon of being produced.In addition, when the downstream side of the yarn that cuts off is batched on the coiling machine, and the yarn end of upstream side no longer needs to stop the operation that board takes out the yarn piece that twines when being wound onto the axle of feeding roller and going up.
In addition, measure the untwisting tension of many yarns, also can detect broken end and make cutting machine work with a sensor of untwisting tension checkout gear.
Because the interlock of untwisting tension checkout gear and a plurality of cutting machines can freely switch, the false twisting machine that can be used as single thread uses, and prevents unnecessary cut-out yarn.Electrostatic apparatus for detection of breaking of yarn before only using this moment.
Following with reference to accompanying drawing, describe embodiments of the invention in detail:
Fig. 1 is the synoptic diagram of false twisting machine of the present invention.
Fig. 2 is the side view of false twisting machine of the present invention.
Fig. 3 is the skeleton diagram of untwisting tension checkout gear and false-twisting device in the first embodiment of the invention.
Fig. 4 is the skeleton diagram of untwisting tension checkout gear and false-twisting device in the second embodiment of the invention.
Fig. 5 is the graph of a relation of untwisting tension and broken end.
Fig. 6 is the synoptic diagram of former false twisting machine.
The representative example of using apparatus for detection of breaking of yarn of the present invention is to extend false twisting machine M.It is that the synthetic fiber yarn that dissolves after the spinning is carried out deformation processing.Its side view such as Fig. 2.Ps is the yarn feeding package, and S is supported by bobbin cradle.L1 is a yarn-guide tube, and the long filament Y that is come out by yarn feeding package Ps is imported into first feeding roller.H1 is a heater, to heat-treating through the finished yarn of false-twisting device.9 is false-twisting device.L2 is a coldplate, and it cools off the yarn after being heat-treated by H1 and fixes its characteristic.IL pools capital by compare certain interval with fluid to the yarn Y that is made up of the fibre bundle of plural number for the plying treating apparatus.Many single thread plying backs become composite yarn.After plying was handled, composite yarn and single thread all can improve opening character.O is a finish roll, pays yarn Y with oil content.W is a batching apparatus, and yarn Y is batched on the package PW.
As shown in Figure 2, in extending false twisting machine M, bobbin cradle S is arranged, supports the yarn feeding package along board K, to the long filament shredding of yarn feeding package after yarn-guide tube L1 imports first feeding roller.There is cutting machine 2 in yarn exit at this yarn-guide tube L.
After this, yarn is processed a heater H 1, coldplate 22, the false-twisting device 9 of usefulness through shredding and is moved back untwisting tension checkout gear 1 and imports second feeding roller.Wherein the untwisting tension checkout gear is the device of the necessary various information of quality management that is used for obtaining the relevant packages such as change of untwisting tension T.In this process, after the long filament Y drawing-off, it is carried out bulk processing through false twisting, heat fixation.Then by after the plying treating apparatus IL doubling, through the 3rd feeding roller F3, the 4th feeding roller F4, apparatus for detection of breaking of yarn 3, operation path L3 and finish roll, batching apparatus are taken up onto on the package PW.
The synoptic diagram of the formation of the major part of doubling false twisting machine M of the present invention such as Fig. 1.3 is apparatus for detection of breaking of yarn, and behind the detection broken end, interlock cutting machine 2 cuts off yarn Y.1 is apparatus for detection of breaking of yarn, also is the untwisting tension checkout gear.After the necessary information of quality management of its inner sensor acquisition package signal is delivered to control part 6.Connect pressure control device by control part 6 feed signals to cylinder that connects pressure of high speed false-twisting device 9 etc., and control the untwisting tension of yarn Y with this.When the change of untwisting tension exceeds range of management, by the signal controlling cutting machine work of control part 6.
When batching usually, feeding yarn Y behind cutting machine 2, by the first feeding roller FR1, a heater H 1, coldplate L2, false-twisting device 9 carry out false twisting processing.After untwisting tension checkout gear 1 detects untwisting tension signal is imported control part 6.The desired value of untwisting tension is imported control part 6 in advance, also imports the control range of desired value To simultaneously: the higher limit Tu of tension force and lower limit Td.On the basis of the untwisting tension that obtains by sensor, be target with desired value To, by the untwisting tension T that connects pressure control device control false-twisting device 9.
The second best in quality yarn Y of the value of untwisting tension T in target zone after plying treating apparatus IL doubling, through apparatus for detection of breaking of yarn 3, batches composite yarn after the doubling by batching apparatus.
As first embodiment that a plurality of sensors are arranged in the untwisting tension checkout gear, as shown in Figure 3, in 2 sensors 5 are housed.Composite yarn is the doubling of 2 yarns, and for the untwisting tension that makes every yarn Y can both detect, yarn channel is separated from each other, and mobile deflector roll 8 and sensor 5 respectively have 2.
A plurality of sensors are housed in the untwisting tension checkout gear, untwisting tension T as composite yarn is example with 100g, the untwisting tension 70g of a yarn, and another root yarn is 30g, for producing high-quality composite yarn, the untwisting tension of controlling each root yarn respectively can produce the measured yarn of matter.
The untwisting tension checkout gear as shown in Figure 3.The axle of deflector roll 7 is fixing, deflector roll 8 and sensor interlock, the tension force of corresponding yarn and moving. Deflector roll 7 and 8 constitutes the passage of yarn.The untwisting tension detection means measure is by the untwisting tension of the yarn Y of this passage.A yarn Y through false-twisting device 9 processing passes through yarn channel.Untwisting tension checkout gear 1 under the situation of usually change, can adjust if necessary false-twisting device T by giving as security pressure, index drum 6 is also controlled the untwisting tension of yarn Y thus, thereby makes high-quality yarn.
YC is made of the YA of single thread 150 Denier and the YB of 75 Denier at this hypothesis composite yarn.Yarn YA untwisting tension T is 70g, and YB is 30g.Suppose yarn YB broken end, the untwisting tension Y that sensor 5 detects YB is about null value, can judge yarn breakage, and the cutting machine 2 that moves thus cuts off yarn YA, YB.
Because by the untwisting tension of a yarn Y of a sensor, when untwisting tension is zero, be not to judge thus that yarn is a broken end this moment, in fact yet provable this point of experiment.But there is error, even promptly yarn broken end untwisting tension is also non-vanishing.Consider the change of error and untwisting tension T,, can be judged as broken end when untwisting tension is near zero during value.
In addition, the untwisting tension T of single thread has big change, can be judged as broken end when for example the variation of untwisting tension surpasses its value over half.
In first embodiment, the yarn that constitutes composite yarn is made as 2, and the yarn that constitutes composite yarn certainly not necessarily is limited to 2, therefore can freely set the quantity of the cutting machine of being controlled by a untwisting tension checkout gear 2 according to the radical of yarn.
The sensor that is equipped with in the untwisting tension checkout gear 1 also is not limited to 2, can be depending on the radical of the yarn that constitutes composite yarn.
Second embodiment such as Fig. 4, the sensor of untwisting tension checkout gear 1 are one, and the yarn channel of the stationary guide roller 7 that links to each other with it becomes one, and mobile deflector roll 8 also is one, lack than the single thread quantity that constitutes composite yarn.Remaining essential structure is identical.In Fig. 4 example, the single thread that constitutes composite yarn is two, and sensor is one.Therefore 2 yarns of false-twisting device 9 false twistings are measured by the whole untwisting tension of 5 pairs of composite yarns of sensor.Have only a yarn to pass through in the yarn channel through false-twisting device 9 false twistings.Untwisting tension checkout gear 1 reaches desired value To for making it under the situation of change usually, the target setting scope is imported into control part 6 with the lower con-trol limit value of tolerance limit scope.Because of the false-twisting device 9 of present embodiment is a belt-type, between the contact pressure and untwisting tension T of false-twisting device 9, the following relationship formula is set up.If the crimp force of crimping control device increases, send the proportional quickening of crimping of yarn speed and belt, so untwisting tension T reduces.Otherwise the crimp force of crimping control device reduces, and then the slip between yarn and belt increases, and the sendout of yarn tails off, and untwisting tension T increases.
Belt crimping control about false-twisting device 9 is illustrated with reference to Fig. 5.If the longitudinal axis is untwisting tension T, transverse axis is the time, and the crimping control of belt can be undertaken by the signal controlling crimping control device of control part 6.The value that is detected and delivered to the untwisting tension of control part 6 by untwisting tension checkout gear 1 becomes big, and above behind the higher limit Tu, control part 6 is delivered to the crimping control device to signal, makes false-twisting device 9 and the crimp force of yarn Y become big, the crimping that also promptly increases belt.The untwisting tension of Shang Shenging will begin to diminish like this, less than upper limit Tu.For reaching desired value To, control part continues feed signals and gives the crimping control device, improves the crimp force of belt, and untwisting tension T is descended.Otherwise the value of delivering to the untwisting tension T of control part 6 diminishes, and is lower than lower limit Td, and then control part 6 is sent signal, and the crimp force of crimping control device is diminished, and the crimp force of belt descends.The untwisting tension T of Xia Jianging begins to increase like this, surpasses lower limit Td.For reaching desired value To, the crimping of belt is descended more, untwisting tension T is risen.
By carrying out the control of above-mentioned crimping control device repeatedly, control untwisting tension T reaches desired value To.The untwisting tension T of the integral body of composite yarn for the single thread that constitutes composite yarn and.Therefore when broken end takes place, the T value is the untwisting tension sum of removing each single thread behind the yarn of broken end.Also promptly, set all desired value To of composite yarn, and establish a higher limit Tu, lower limit Td and lower con-trol limit value Tmin when a single thread broken end, have only the untwisting tension of broken end yarn partly to diminish.When being lower than lower con-trol limit value Tmin, can be judged as broken end.
Suppose that now composite yarn YC is made of the YA of two single thread 150 Denier and the YB of 75 Denier.The untwisting tension of yarn Y is 70g, and yarn YB is 30g, supposes that yarn YB breaks end, and loose thread twines on the axle of the first feeding roller FR1.The untwisting tension T of composite yarn YC is YA and YB's and 100g.Therefore desired value is 100g.Amplitude of fluctuation was assumed to 5g when untwisting tension was 100g about 3g to 5g, and then upper limit Tu is 105g, and lower limit Td is 95g.Control false-twisting device 9 thus, untwisting tension T is limited in the target zone.When broken end took place, the value of untwisting tension checkout gear 1 dropped to 70g by 100g, and its amplitude of fluctuation should be 75g to 65g, was 90g if set lower con-trol limit value Tmin, and then this value is littler than the management value, so the time can be judged as broken end, start cutting machine 2 cut-out YA and YB.
When another root yarn YA breaks end, obtain the value of the dotted line of Fig. 5.
In above embodiment, only related to the manufacturing of composite yarn.Sometimes not only process composite yarn with a board, also single thread is carried out false twisting processing.Adding man-hour at single thread, serves as that the basis is detected broken end and can be caused the unnecessary action of cutting machine 2 with the detected value of untwisting tension checkout gear 1, causes operating efficiency to reduce.For example shown in Figure 3, with the untwisting tension checkout gear of a single thread of a sensor,, particularly in that being carried out false twisting, very thin yarn adds man-hour because of having only single thread, and a reference value of the untwisting tension T of detection is very low, can think this by mistake to be yarn breakage.For anti-incident is here given birth to, in above-mentioned control device, will cut off with the interlock of cutting machine 2.Doubling false twisting machine also just can be used for single thread processing like this.The broken end of this moment is by detecting with former same electrostatic apparatus for detection of breaking of yarn 3.
Below the present invention is specialized
(1) thickness of composite yarn and untwisting tension T are not limited to the numerical value in the foregoing description, can be suitable for the various situations of composite yarn.Doubling false twisting machine M also is not limited to record and narrate among the embodiment in addition, and is suitable for all doubling false twisting machines, and quantity and the kind of single thread Y that constitutes composite yarn certainly is various, and for the untwisting tension T that cuts off yarn can freely set, cutting machine 2 also can freely be selected.

Claims (3)

1, the apparatus for detection of breaking of yarn of doubling false twisting machine is characterized in that:
The doubling false twisting machine of production doubling false-twisted yarn has control device, when one of many single thread that constitute doubling broken end, cut off whole doublings, detect untwisting tension by tension detecting apparatus, when untwisting tension was lower than certain value, detecting had above-mentioned single thread to be cut off.
2, the apparatus for detection of breaking of yarn of doubling false twisting machine as claimed in claim 1 is characterized in that:
Limit range of management making a concerted effort of the untwisting tension of many single thread of tension detecting apparatus mensuration formation composite yarn, is judged as broken end when untwisting tension reduces to go beyond the scope.
3, the apparatus for detection of breaking of yarn of doubling false twisting machine as claimed in claim 2 is characterized in that:
Its formation is the interlock that can freely cut to the cutting machine of all single thread of cutting off composite yarn.
CN97104220A 1996-05-07 1997-05-06 Yarn breakage detecting device of doubled yarn false twister Expired - Lifetime CN1057574C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP112396/96 1996-05-07
JP11239696A JP3079997B2 (en) 1996-05-07 1996-05-07 Thread breakage detection device for twine false twisting machine
JP112396/1996 1996-05-07

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Publication Number Publication Date
CN1165210A true CN1165210A (en) 1997-11-19
CN1057574C CN1057574C (en) 2000-10-18

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CN97104220A Expired - Lifetime CN1057574C (en) 1996-05-07 1997-05-06 Yarn breakage detecting device of doubled yarn false twister

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EP (1) EP0806503B1 (en)
JP (1) JP3079997B2 (en)
KR (1) KR100456745B1 (en)
CN (1) CN1057574C (en)
DE (1) DE69715957T2 (en)
HK (1) HK1003898A1 (en)
TW (1) TW335420B (en)

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CN110592750A (en) * 2019-10-10 2019-12-20 海盐县梦芝舟毛纺厂 Self-adjusting doubling machine

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KR950009866B1 (en) * 1991-09-06 1995-08-29 후지레비오 가부시끼가이샤 4-hydroxytetrahydropyran-2-0ne derivatives and intermediates for synthesizing the same
JPH0796730B2 (en) * 1992-08-31 1995-10-18 村田機械株式会社 False twisting device
JPH07133535A (en) * 1993-11-08 1995-05-23 Murata Mach Ltd Maintenance system for draw false-twister
JPH0892828A (en) * 1994-09-21 1996-04-09 Unitika Ltd Removal of abnormal part in frictional false twisting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110273206A (en) * 2018-03-16 2019-09-24 日本Tmt机械株式会社 False twist processing machine

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JPH09296331A (en) 1997-11-18
HK1003898A1 (en) 1998-11-13
EP0806503A1 (en) 1997-11-12
KR100456745B1 (en) 2005-02-23
KR970075002A (en) 1997-12-10
DE69715957T2 (en) 2003-08-07
DE69715957D1 (en) 2002-11-07
TW335420B (en) 1998-07-01
EP0806503B1 (en) 2002-10-02
JP3079997B2 (en) 2000-08-21
CN1057574C (en) 2000-10-18

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