CN1433948A - Apparatus for pneumatically connecting ends of yarns - Google Patents

Apparatus for pneumatically connecting ends of yarns Download PDF

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Publication number
CN1433948A
CN1433948A CN03103107.2A CN03103107A CN1433948A CN 1433948 A CN1433948 A CN 1433948A CN 03103107 A CN03103107 A CN 03103107A CN 1433948 A CN1433948 A CN 1433948A
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CN
China
Prior art keywords
yarn
splicing
groove
loosening device
gripping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN03103107.2A
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Chinese (zh)
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CN1295125C (en
Inventor
S·沙顿
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Saurer Spinning Solutions GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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Publication of CN1433948A publication Critical patent/CN1433948A/en
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Publication of CN1295125C publication Critical patent/CN1295125C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • B65H69/061Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
    • B65H69/063Preparation of the yarn ends
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/30Handled filamentary material
    • B65H2701/31Textiles threads or artificial strands of filaments
    • B65H2701/319Elastic threads

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Ropes Or Cables (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

A device for the pneumatic splicing of yarns, especially elastane yarns, has a splicing body defining a splicing conduit loadable with compressed air, as well as with pneumatic tubes for pneumatically preparing the yarn ends to be spliced, wherein the central axes of the pneumatic tubes intersect the central longitudinal plane of the splicing conduit. The pneumatic tubes are replaceably fixed in bores of the splicing body, with the inlet opening of the pneumatic tubes positioned in the immediate vicinity of one of the two outlets of the splicing conduit. The inlet opening of the pneumatic tube has a funnel-shaped contour that promotes insertion of the cut ends of the upper and lower yarns into the pneumatic tubes.

Description

The air-flow connecting device of yarn
Technical field
The air-flow that the present invention relates to a kind of preamble according to claim 1 connects the connecting device of yarn, particularly stretch yarn.
Background technology
Use the yarn device of splicer of air-flow connection yarn on the bobbin-winding machine, known for everyone for many years, in a large amount of patent specifications, such as DE 40 05 752 A1 or the existing detailed description of DE 44 20 979 A1.
Use this yarn device of splicer known to everybody, two connect with streamer mode detecting the loose thread that produces behind one section yarn of excision after the fracture or by yarn clearer, make to form one like the yarn point of connection that does not have knot.
That is to say, be wound up in yarn on the what is called on relevant bobbin surface held and brought into the yarn device of splicer by a suction nozzle the groove of splicing of the head of splicing.Almost simultaneously, for example catch yarn under the what is called from a unwinding pipe that is positioned at the unwinding position by a yarn trap, and be presented in the groove of splicing, and yarn carries out air-flow with following yarn and is connected in this place.
In order to make this splicing demonstrate that an approximate knotless yarn connects and near the brute force of original yarn, two loose threads are cut-to-length and get ready for the process of splicing accurately earlier.For this reason, known yarn device of splicer all has corresponding yarn holding device, yarn cutting device and so-called gripping and loosening device.
In other words, after two loose threads enter into the groove of splicing by aforesaid executive component, be positioned in separately between the scissors of the clamping jaw of a yarn holding device and a yarn cutting device, a Yarn processing device that belongs to loose thread is placed in the side that the groove of splicing is faced mutually respectively here.
In the yarn holding device under last yarn and following yarn are fixed on reliably, these two yarns are promptly by corresponding yarn cutting device cut-to-length.Then, the loose thread of customized cut-off is inhaled into respectively in adjacent gripping and the loosening device and in this place and makes the air-flow pretreatment.
Loosen at first as much as possible its twist per unit and remove chopped fiber of two loose threads just.Then, pretreated loose thread is by so-called pulling out in the groove of splicing that yarn circle device is pulled into the head of splicing, and loose thread is being spliced in the groove roughly being arranged parallel to each other on the identical height like this, but orientation is opposite separately.
The pulse of compressed air that is incorporated in the groove of splicing by corresponding ingate makes basic its result of fiber generation eddy current for arrangement in parallel of two loose threads splice for forming approximate knotless even yarn.
Said method and corresponding device thereof are in actual production, such as being complete failure-free in the splicing of Quality Pure Cotton Yarn Production or cotton and syntheticfibres mixed yarn.
If but splice alleged stretch yarn, situation is just relatively more difficult, because stretch yarn generally has the heart yarn of a high-tension, the heart yarn outside is such as being coated with cotton fiber.This stretch yarn can produce strong the contraction because elastomeric heart yarn is arranged after yarn is cut off, promptly produce strong curling.
If this stretch yarn carries out the connection of yarn in above-mentioned yarn device of splicer, this problem of then frequent appearance, be that loose thread is owing to its strong curling tendency can not be inhaled in gripping and the loosening device, and can not carry out corresponding pretreatment, perhaps loose thread overlaps insufficiently in the groove of splicing of the head of splicing of yarn device of splicer.
Usually draw two kinds of results, promptly can not successfully splice or splice meet the requirements for quality of proposition.
For the stretch yarn of can splicing, therefore the suggestion that has proposed is, settles additional braking element, this braking element that loose thread is fixed after through the yarn cutting device cut-to-length in the groove zone of splicing or in gripping and loosening device zone.Issuable strong the curling of loose thread that promptly stops cut-to-length.
EP 1 118 570 A2 a kind of yarn device of splicer of showing and having described for example, it respectively grip and the height of loosening device on an additional yarn braking element is arranged, it is shaped as the lath of band profile of tooth.
This lath of fixing each loose thread roughly is placed in yarn holding device and the affiliated gripping and the half-distance between the loosening device.This explanation, the yarn length that loose thread produces after the yarn cutting device cut-to-length the tendency of curling freely is by the dimidiation roughly of the braking element known to everybody.
Use such design-calculated yarn device of splicer, though the effective degree of splicing of stretch yarn increases, basic problem fails to solve.
This conclusion is consistent with the described yarn device of splicer of disclosed DE 101 24 832 A1 afterwards at least in part.In this yarn device of splicer, approximately grip and the height of loosening device on arrange the braking element that is used for loose thread, make cut-to-length by these braking elements, the length of the loose thread that tends to curl is approximately divided equally.Be designed to apply the screen cloth of negative pressure according to the braking element of DE 101 24 832 A1, this screen cloth makes the loose thread of cut-to-length be fixed on the screen surface with streamer mode.
In addition, DE 101 24 832 A1 also show and describe this a kind of form of implementation, near gripping under each braking element can directly be positioned at here and the loosening device.Use this form of implementation can obviously improve the splice number of times of stretch yarn of actv..
According to the yarn device of splicer of DE 101 24 832 A1, its shortcoming is also arranged certainly, this device is complicated, thereby needs many expenses.
In addition, DE 34 05 304 A1 have announced a kind of yarn device of splicer, on this device, are loaded on and splice groove except general hole, compressed air inlet is arranged in the head of splicing, and also have so-called gas channel.Here these gas channels are to be divided into branch line from the groove side of splicing between hole, compressed air inlet and the groove of splicing outlet, and same separately jetting system is connected.
By jetting system, can in gas channel, produce the splice air-flow of groove direction of one aligning, this air-flow can make the loose thread of cut-to-length be drawn in the gas channel under needing situation, and the air-flow pretreatment of loose thread is provided.
Because this gas channel directly comes out from the groove branch of splicing, gas channel is very limited certainly from its diameter.That is to say that the diameter of gas channel must be such as the width that is significantly less than the corresponding groove of splicing in order to guarantee the a/s function of device of splicer.
Because the diameter of gas channel is less, yarn device of splicer according to DE 34 05 304 A1, in actual applications, especially processing difficulties, for example proof almost can not be used during stiffening yarn, because the minute diameter of gas channel has hindered general yarn circle to be drawn in the gas channel.
This everybody shortcoming of known yarn device of splicer is, gas channel is directly to put in the head of splicing, thereby the yarn parameter that gas channel is matched with each change is very difficult, and requires to change the whole head of splicing usually.
Under the situation of this known yarn device of splicer, for example when the change yarn count or the twist per unit Z twist yarn that changes yarn to be processed when being transformed to the S twist yarn, always need to change the whole head of splicing.
That is to say, under the situation of this known yarn device of splicer, need big storehouse management and could mate uniquely and grip and loosening device.
Summary of the invention
From above-mentioned prior art, task of the present invention is, creates the device that a kind of air-flow connects yarn, the reluctant yarn of can splicing where necessary, and such as stretch yarn, and gripping and loosening device can be matched with the yarn parameter of change with plain mode.
This task can solve according to a kind of device described in claim 1.
According to device of the present invention, its optimized technical scheme illustrates in the dependent claims.
Having special advantage by device of the present invention is, be subjected to the loose thread of fixing last yarn of yarn holding device and following yarn, they by corresponding yarn cutting device cut-to-length after, be inhaled into immediately and be subjected to additional air flow near be loaded on the groove outlet of splicing gripping and the loosening device and at this place and fix; The yarn holding device keeps a determining deviation to be installed in the above and below of yarn device of splicer with the head of splicing.
By the fixing loose thread of additional air-flow, largely stoped the typical case of its loose thread to be curled such as stretch yarn, thereby simply and than the failure-free mode to guarantee to finish a/s splicing.
The infundibulate profile of gripping and loosening device ingate also sucks reliably even guarantee this yarn that is difficult to handle.Because grip and loosening device is fixed in the hole of the head of splicing replaceably,, need not bigger expense like this and just can reach the loose thread of suction is made best pretreatment for next step process of splicing so can also be suitable for various current yarn parameters at any time.
Essential here storehouse management is only limited to and grips and loosening device.
Described in claim 2, advantageous form of implementation is, the infundibulate profile is the component part of braking element, and gripping and loosening device under this braking element is guaranteed such as the bolt that is easy to install and remove by are fixed in the hole of the head of splicing with being easy to change.
Such braking element is such as manufacturing the plate lighter and deep hole pinching that price is suitable.
In addition in the preferred design as claimed in claim 3, what gripping and loosening device should be such packs into, and promptly every axis of gripping and loosening device all is in the height of the groove bottom of splicing.
Can guarantee to be fixed on interior loose thread process gripping of yarn holding device and loosening device in this way by middle heart tensioning, thereby loose thread is gripped immediately and the suction fully of loosening device, the functional reliability to gripping and loosening device plays fine effect like this.
In another the preferred form of implementation described in claim 4 and 5, be placed in induction opening in the groove of splicing and gripping and loosening device and be connected to a compressed air source via the compressed air line that is switched in the may command valve.
The valve here, for example the 2/2-way valve connects by the cone winding position computing machine of corresponding control path with relevant winder ingot position, and can accurately control surely in this way, and does not need to pay a large amount of additional regulate expenditures.
That is to say, when needs, be used to grip and opening time of the valve of loosening device and opening time of being placed in the valve of the induction opening in the groove of splicing can be determined to regulate, and optionally carry out best-fit.
As described in claim 6, a kind of advantageous form of implementation is, pressurized air import grip and loosening device with the internal fixation loose thread, and pressurized air enters into the groove of splicing and loose thread is spliced make temporary transient overlap joint.The loose thread that can stop the last yarn that is placed in the groove of splicing and following yarn by this temporary overlap joint is possible curling and partly leave the groove of splicing before being blown into the air of splicing.
Just be applied to grip and the pressurized air effect of loosening device and with this additional air-flow fixedly loose thread should be maintained at least determine that loose thread is mutually fully during connection till.
Description of drawings
Other details of the present invention will describe by embodiment shown in the drawings below.Accompanying drawing illustrates,
One of Fig. 1 is equipped with a work ingot position lateral plan by the weaving loom of the production cross winding bobbin of yarn device of splicer of the present invention;
Fig. 2 is according to the cut-away section birds-eye view of yarn device of splicer of the present invention;
Fig. 3 is according to the III-III section drawing in the yarn device of splicer of the present invention;
The pressure pulsation time history diagram that Fig. 4 acts in the groove of splicing and in gripping and the loosening device.
The specific embodiment
Fig. 1 represents a weaving loom of producing cross winding bobbin, is the side schematic view of a work ingot position 1 of an automatic winder in an embodiment.This textile machinery generally has many this work ingot positions 1 of aligning mutually and arranging.
On these work ingot positions 1, many cross winding bobbins 13 that become large package such as cop 2 rewindings of on (unshowned) ring throstle, producing.
For this reason, work ingot position 1 is equipped with control mechanism and so-called cone winding position computing machine 5 of different graphic yarn operating mechanisms and yarn testing agency and self.
As shown in Figure 1, go to by its yarn road from the yarn 3 of cop 2 unwindings and can be rotated to support on the cross winding bobbin 13 the bobbin carriage 14, and when the operation of bobbin, be subjected to so-called groove drum 12 friction-driven, and yarn 3 preferably moves by a unwinding accelerator 4, yarn clearer 8 and an optional waxing attachment 10 of yarn cutting device 9 under 6, one bands of a yarn tension device.
Be positioned at outside " regular " yarn road 30, also settled a yarn device of splicer 7.
In addition, be provided with a suction nozzle 15 and a yarn trap 19, be used for operation loose thread when yarn breakage or yarn clearer removing fault yarn section.The suction nozzle 15 of yarn 31 has a suction nozzle mouth 16 of vacuum-pumping here in the operation, and suction nozzle 15 can be done limited being supported rotatably around S. A. 17.Can a suction inlet 20 that be in negative pressure be arranged around the yarn trap 19 that S. A. 21 is made limited swivel bearing, and yarn trap 19 will descend yarn 32 to take yarn device of splicer 7 to.
As shown in Figure 2, mainly be made up of an air dispenser assembly 24 that is installed on the cone winding position shell according to yarn device of splicer 7 of the present invention, one so-called splices and 25 is fixed on this assembly 24 by bolt 23.
Splicing 25 generally has one to lead to pressurized air and spray into the groove 26 of splicing in the hole 29.Pressurized air sprays into hole 29 and is connected via a compressed air piping 18 and a compressed air source that is connected on the air dispenser assembly 24, and air duct 18 is connected with a valve, such as 2/2-way valve 22.One side of valve 22 also is connected on the cone winding position computing machine 5 of relevant control position 1 by a control path 27.
In addition, near the outlet 50 of the groove 26 of splicing or 51, grip and loosening device 33 or 34 is placed in respectively in corresponding accommodation hole 46 or 47.
Here gripping and loosening device 33 or 34 are fixing replaceably by the braking element 53 with infundibulate profile 52 separately, and so locate, promptly grip and the axis 37 or 38 of loosening device 33 or 34 is separately positioned on the height of bottom surface 55 of the groove 26 of splicing, and form right angles with the centre plane 45 of the groove 26 of splicing.
Braking element 53 is fixed on such as available bolt 54 splices on 25.
Gripping and loosening device 33 or 34 generally have a tangential hole 56 or 57 at least, and be connected on the compressed air source 11 by a compressed air piping 35 that is connected with a valve 36,2/2-way valve 36 can be subjected to a control path 28 controls of cone winding position computing machine 5 here.
In addition as can be seen from Figure 2, splice 25 both sides also are mounted with feed carrier 39 or 40, yarn holding device 43 or 44 and yarn cutting device 41 or 42.
Function according to yarn device of splicer of the present invention:
When winder moved, the yarn 3 of operation was subjected to yarn clearer 8 monitorings shown in Fig. 1, and yarn clearer 8 measures and circulate a notice of the inhomogeneous fault of each yarn to cone winding position computing machine 5.
Cone winding position computing machine 5 starts once clear and definite cut-out yarn for this reason immediately.Promptly Yun Hang yarn 3 is cut to one by yarn cutting device 9 and goes up yarn 31 and a following yarn 32.
When last yarn 31 was up on the surface of the cross winding bobbin 13 that is subjected to the lock torque effect, following yarn 32 still remained in the yarn tension device 6 usually.
For the yarn section of removing damage and carry out a new yarn and connect, then drawn again around the last yarn 31 of cross winding bobbin 13.
Promptly suction nozzle 15 as shown in phantom in Figure 1 rotates up and its suction nozzle mouth 16 that is in suction function is navigated on the surface region position of cross winding bobbin 13.Cross winding bobbin 13 rotates by the debatching direction at leisure simultaneously.
Go up yarn 31 as long as suction nozzle 15 1 is drawn, just cut defective yarn section and with its eliminating by (not illustrating on the figure) yarn cutting device of on suction nozzle 15 positions, settling.
Then as shown in Figure 2, the last yarn 31 of no fault is penetrated in 25 the groove 26 of splicing of splicing of yarn device of splicer 7 by suction nozzle 15.
Here suction nozzle 15 will go up yarn 31 also among up the yarn holding device 44 and below locate between the cutter of yarn cutting device 41.
Stagger at the same time or approximately some draw and also hold down yarn 32 when going up yarn 31 times.That is to say that this time yarn normally is fixed in the yarn tension device 6 after cutting off one section in check yarn, and yarn trap 19 is caught the following yarn 32 on yarn tension device 6, following yarn 32 is connected in 25 the groove 26 of splicing of splicing of yarn device of splicer 7.
Following yarn 32 as above yarn 31 is such, penetrates in the yarn holding device 43 of the below under in the of here and penetrates in the yarn cutting device 42 of a top.
In case two yarns 31,32 all serve as a contrast in the groove 26 of splicing and also mechanically are fixed in yarn holding device 43 or 44, then grip and loosening device 33,34 controls by corresponding valve 22, by supplied with compressed air.Then, yarn 31 and 32 is by yarn cutting device 41 or 42 cut-to-lengths.
Cone winding position computing machine 5 is at first via 36 open to the outside world of signal line 28 maneuvering valves, like this grip and the position of the ingate 48 of loosening device 33 or 34 or 49 on produce stronger suction airflow.
After yarn cutting device 41 or 42 is cut off yarn and following yarn 31,32, the loose thread of cutting off is at first got rid of by suction nozzle 15 or yarn trap 19, and the infundibulate profile 52 that the free loose thread of going up yarn 31 and following yarn 32 simultaneously is braked element 53 is drawn in gripping and loosening device 33 or 34.The loose thread of going up yarn and following yarn 31,32 like this is subjected to air-flow and fixes, thereby stops strong the curling of yarn.
In addition, by tangential hole 56 or 57 pressurized airs that flow into by gripping and loosening device 33 or 34, the loose thread of last yarn and following yarn promptly is subjected to the pretreatment of air-flow by rules.Just be inhaled into and grip and farthest loosen its yarn twist and dispose chopped fiber of the loose thread of the last yarn of loosening device 33,34 and following yarn.
Next, such as we all know, so this paper no longer elaborates, pretreated loose thread is by so-called pulling out in the groove 26 of splicing that yarn circle device is pulled into yarn device of splicer 7, and carries out air-flow connect in groove.
That is to say, cone winding position computing machine 5 is handled 2/2-way valve 22 via a signal line 27, the air of splicing is injected in the groove 26 of splicing by compressed air line 18 and blast injection hole, this air of splicing is at first with the mutual vortex of fiber of the arrangement in parallel as far as possible of two loose threads, and produces yarn with this and connect.
When loose thread when pulling out yarn circle device and be withdrawn in the groove 26 of splicing, gripping and loosening device 33,34 still keep the supply pressurized air, so that are subjected to the effect of an air-flow curable grip along the direction of gripping and loosening device 33,34 owing to the jet-stream wind that plays control action in gripping and loosening device makes the loose thread of yarn and following yarn.
Grip and loosening device 33,34 in jet-stream winds here be docked at least first splice air pulse keep being incorporated into splice in the groove 26 till.
A kind of preferred form of implementation as shown in Figure 4, be used for grip and loosening device 33,34 fixedly the pulse of compressed air 59 of loose thread at moment t 1Connect, and the moment t that keeps to the final 3Till.
In contrast, the pulse of compressed air 58 that is used for approximate two loose threads of splicing is in t constantly knotlessly 2And t 4Between.
This shows, the pulse of compressed air 58 of the loose thread that is used to splice and the pulse of compressed air 59 that is used for fixing loose thread grip and loosening device 33,34 in be overlapping in a period of time.

Claims (6)

1. be used for air-flow and connect yarn, the device of stretch yarn particularly, dispose one with a head of splicing that can feed the compressed-air actuated groove of splicing, and the gripping and the loosening device that are used for air-flow pretreatment loose thread to be spliced, wherein the axis of this gripping and loosening device with splice the central longitudinal Plane intersects of groove, it is characterized in that, grip and loosening device (33,34) be fixed on replaceably splice the head (25) accommodation hole (46,47) in, and gripping and loosening device (33,34) ingate (48,49) be positioned at two of the groove of splicing (26) outlets (50 respectively, 51) near one of in, and gripping and loosening device (33,34) ingate (48,49) an infundibulate profile (52) is arranged, it guarantees to go up yarn or following yarn (31, the loose thread of a cut-to-length 32) inwardly swings to reliably and grips and loosening device (33,34) in.
2. according to the device of claim 1, it is characterized in that infundibulate profile (52) is the component part of braking element (53), this braking element can be fixed on the head (25) of splicing by at least one bolt (54).
3. according to the device of claim 1, it is characterized in that, grip and extend on the height of the bottom surface (55) of the groove of splicing (26) respectively the axis (37,38) of loosening device (33,34).
4. according to the device of claim 1, it is characterized in that, be placed in the induction opening (29) in the groove of splicing (26) of the head (25) of splicing and be placed in and grip and tangential hole (56,57) that loosening device (33,34) is interior is connected on the compressed air source (11) via compressed air line (18 or 35) and controollable valve (22 or 36).
5. according to the device of claim 4, it is characterized in that, valve (22 or 36) is connected on the cone winding position computing machine (5) by control path (27 or 28), and can so control, till promptly being incorporated in the groove of splicing (26) of the head (25) of splicing, make loose thread (31 or 32) pneumatically fixedly be entered into gripping and loosening device (33 or 34) at least to first air pulse of splicing.
6. according to the device of claim 5, it is characterized in that, valve (22,36) can do such control, promptly be incorporated into grip and the pulse of compressed air (59) of loosening device (33 or 34) and groove of splicing (26) that is incorporated into splice (25) in the air pulse of splicing (58) be overlapping in a period of time.
CNB031031072A 2002-01-25 2003-01-24 Apparatus for pneumatically connecting ends of yarns Expired - Fee Related CN1295125C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10202781A DE10202781A1 (en) 2002-01-25 2002-01-25 Device for the pneumatic connection of yarns
DE10202781.1 2002-01-25

Publications (2)

Publication Number Publication Date
CN1433948A true CN1433948A (en) 2003-08-06
CN1295125C CN1295125C (en) 2007-01-17

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US (1) US20030167747A1 (en)
EP (1) EP1331192B1 (en)
JP (1) JP2003212438A (en)
CN (1) CN1295125C (en)
AT (1) ATE338721T1 (en)
DE (2) DE10202781A1 (en)

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CN1295125C (en) 2007-01-17
DE10202781A1 (en) 2003-07-31
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EP1331192B1 (en) 2006-09-06
US20030167747A1 (en) 2003-09-11

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