GB2442955A - Yarn tension control mechanism - Google Patents

Yarn tension control mechanism Download PDF

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Publication number
GB2442955A
GB2442955A GB0620746A GB0620746A GB2442955A GB 2442955 A GB2442955 A GB 2442955A GB 0620746 A GB0620746 A GB 0620746A GB 0620746 A GB0620746 A GB 0620746A GB 2442955 A GB2442955 A GB 2442955A
Authority
GB
United Kingdom
Prior art keywords
yarn
processing machine
tension
control mechanism
guide
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.)
Withdrawn
Application number
GB0620746A
Other versions
GB0620746D0 (en
Inventor
John Dalton Griffith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Griffith Textile Machines Ltd
Original Assignee
Griffith Textile Machines Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Griffith Textile Machines Ltd filed Critical Griffith Textile Machines Ltd
Priority to GB0620746A priority Critical patent/GB2442955A/en
Publication of GB0620746D0 publication Critical patent/GB0620746D0/en
Priority to BE2007/0506A priority patent/BE1017889A3/en
Publication of GB2442955A publication Critical patent/GB2442955A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/02—Axminster looms, i.e. wherein pile tufts are inserted during 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
    • B65H51/00—Forwarding filamentary material
    • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/10—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by devices acting on running material and not associated with supply or take-up devices
    • B65H59/20—Co-operating surfaces mounted for relative movement
    • B65H59/22—Co-operating surfaces mounted for relative movement and arranged to apply pressure to material
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02H—WARPING, BEAMING OR LEASING
    • D02H13/00—Details of machines of the preceding groups
    • D02H13/22—Tensioning devices
    • D02H13/24—Tensioning devices for individual threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/12—Controlling warp tension by means other than let-off mechanisms
    • D03D49/16—Warp supplied by creel
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

A yarn tension control mechanism (22) for use with yarn (30) arranged to be pulled from yarn packages into a yarn processing machine. The mechanism comprises a yarn guide (24) defining a plurality of yarn guide passageways (26). Each yarn guide passageway (26) includes a yarn inlet end (28) into which yarn (30) from a yarn package is directed and a yarn outlet end (32) from which the yarn (30) is pulled into a yarn processing machine. An extraction mechanism (34) is provided to draw lengths of yarn (30) from the yarn packages prior to the yarn (30) being pulled into the yarn processing machine such that tension in the lengths of yarn (30) upstream of the yarn inlet ends (26) of the yarn guide passageways (28) is minimized. An adjustable clamp member (36) is provided in each yarn guide passageway (26) between the yarn inlet end (28) and the yarn outlet end (32) to create adjustable tension in the yarn (30) downstream of the clamp member (36) when the yarn is pulled into the yarn processing machine.

Description

* 1 2442955
YARN TENSION CONTROL
The invention relates to a yarn tension control mechanism for use with yarn arranged to be pulled from yam packages into a yarn processing machine, and a s method of controlling the tension of yarn being pulled from yarn packages into a yarn processing machine.
In textile processing, yarn is generally stored in yarn packages from where it is pulled, as required. into a yarn processing machine. Such yarn processing machines include, for example, Axminster carpet weaving looms where yarn is typically stored in yarn packages in the form of cheeses 10 on a creel frame 12, as illustrated in Figure 1. In such arrangements, yarn is drawn from the cheeses 10 through tubes 14 to a yam board 16, and then pulled intermittently in relatively short lengths from the yarn board 16 into a loom 18.
Typically the creel frame 12 includes a large number of static spindles 20 arranged in rows on which cheeses 10 are rotatably mounted.
During weaving the yarn on a given cheese 10 is pulled from one side of the cheese 10 causing the cheese 10 to rotate about a rotational axis defined by the spindle 20 on which it is carried.
When a cheese 10 is full of yarn, the mass of yarn thereon is high. As a result the frictional resistive force between the cheese 10 and the spindle 20 on which it is carried is also relatively high. This means that the resulting tension in yarn pulled from the cheese 10, i.e. the so-called "pull-off' tension, is relatively high.
The cheeses 10 generally rotate freely on the spindles 20. Consequently, the pull-off tension in the yarn being pulled from a given cheese 10 decreases as the diameter and weight of the cheese 10 decreases.
In addition, yams are typically pulled from different cheeses 10 at varying rates due to the variations of colours required in the weaving process. Consequently, the diameters of the different cheeses 10 change at differing rates to each other such that the rate of change of pull-off tension will vary from one cheese 10 to the next.
These variations are accentuated by bends in the yam path defined by the tubes 14 located between the creel frame 12 and the yarn board 16.
While such variations in pull-off tension have been described with specific reference to the use of cheeses 10 on a creeJ frame 12 for use with an Axminster carpet weaving loom, such variations in pull-off tension will arise with other forms of yarn package.
According to an aspect of the invention there is provided a yarn tension control mechanism for use with yams arranged to be pulled from yam packages into a yam processing machine, the mechanism comprising: a yam guide defining a plurality of yarn guide passageways, each yarn guide passageway including a yarn inlet end into which yarn from a yarn package is directed and a yam outlet end from which the yarn is pulled into a yarn processing machine; an extraction mechanism to draw lengths of yam from the yarn packages prior to the yarn being pulled into the yam processing machine such that tension in the lengths of yarn upstream of the yarn inlet ends of the yarn guide passageways is minimized; and an adjustable clamp member provided in each yarn guide passageway between the yarn inlet end and the yarn outlet end to create a predetermined amount of tension in the yarn downstream of the clamp member when it is pulled into the yarn processing machine.
The provision of an extraction mechanism is advantageous since it permits any tension created in the yarn due to the nature of the originating yarn packages andlor the yarn pathway followed between the yarn packages and the extraction mechanism to be minimized.
The provision of adjustable clamp members in the yarn guide passageways allows a predetermined amount of tension to be created in the yarn prior to it being pulled into a yarn processing machine such as an Axminster carpet weaving loom, for example. ii thereby permits yarn to be pulled into a yarn processing machine to be tensioned to an extent that will optimize the performance of the yarn processing machine, such tensioning being substantially isolated from any tension created as a result of the size, weight and relative positions of the yarn packages.
According to another aspect of the invention there is provided a method of controlling the tension of yarn to be pulled from yam packages into a yarn processing machine comprising the steps of: (i) drawing lengths of yarn from yarn packages prior to the yarn being pulled into a yarn processing machine such that tension in the lengths of yarn is minimized; and (ii) applying an adjustable clamping force to the yarn downstream of the lengths of yarn and upstream of the yarn processing machine such that a predetennined amount of tension is created in the yarn when it is pulled into the yarn processing machine.
Embodiments of the invention will now be described, by way of non-limiting examples, with reference to the accompanying drawings in which: Figure 1 illustrates the typical supply of yarn to an Axminster carpet weaving loom; Figures 2 and 3 show a yarn tension control mechanism according to an embodiment of the invention; Figure 4 shows a cross-sectional view along the line V-V of Figures 2 and 3; Figure 5 shows a cross-sectional view along the line X-X of Figures 2 and 3; Figure 6 shows a cross-sectional view of an extractor of a yarn tension control mechanism according to another embodiment of the invention; Figures 7 and 8 show a yarn tension control mechanism according to a further embodiment of the invention; Figures 9 and 10 show a yam tension control mechanism according to a yet further embodiment of the invention; and *, Figures II and 12 show a yarn tension control mechanism according to yet another embodiment of the invention.
A yarn tension control mechanism 22 according to an embodiment of the invention is shown in Figures 2 and 3, and includes a yarn guide 24 defining a plurality of yarn guide passageways 26.
Each of the yarn guide passageways 26 includes a yarn inlet end 28 into which yarn 30 from a given yarn package (not shown) is directed and a yarn outlet end 32 from which the yarn 30 is directed to a yarn processing machine (not shown).
The yarn tension control mechanism 22 also includes an extraction mechanism in the form of an extractor 34 located upstream of the yarn inlet ends 28 of the yarn guide passageways 26, and an adjustable clamp member 36 in each yarn guide passageway 26 between the yarn inlet end 28 and the yarn outlet end 32.
In the embodiment shown in Figures 2 and 3, the extractor 34 includes an extractor plate 38 in which elongated yarn receiving apertures 40 are formed, as shown in Figure 5.
The extractor plate 38 is mounted so as to be movable laterally relative to the yarn inlet ends 28 of the yarn guide passageways 26 between a rest position in which the elongated yarn receiving apertures 40 are aligned with the yarn inlet ends 28 of the yarn guide passageways 26 (Figure 2) and an extraction position in which the yarn receiving apertures 40 are offset from the yarn inlet ends 28 of the yarn guide passageways 26 (Figure 3).
Each of the clamp members 36 includes an inflatable bladder member 42 mounted on an inner surface of a side wall 44 of the respective yarn guide passageway 26 so as to lie flat against the side wall 44 in its deflated configuration and to extend towards the opposite side wali 46 of the respective yarn guide passageway 26 in its inflated configuration.
S
Preferably each bladder member 42 is selectively inflatable to control the extent to which it extends towards the opposite side wall 46 of the respective yarn guide passageway 26 in its inflated configuration.
Preferably a vacuum may be induced in each bladder member 42 to ensure that it lies flat against the side wall 44 in its deflated configuration.
In the embodiment shown in Figures 2 and 3, each of the clamp members 36 includes a wear strip 48 provided on the bladder member 42 such that the wear strip 48 and the inner surface of the opposite side wall 46 define opposed clamping surfaces when the bladder member 42 is in its inflated configuration.
in other embodiments, the wear strips 48 may be omitted and the bladder members 42 may themselves each defme a clamping surface.
Yarns 30 are directed from yarn packages along tubes 50 and through respective apertures 52 formed in a yarn board 54, which correspond in position to the tubes 50. as shown in Figure 4.
Preferably, the elongated yarn receiving apertures 40 formed in the extractor plate 38 of the yarn tension control mechanism 22 correspond in position to the apertures 52 formed in the yarn board 54 such that the yarns 30 can be directed from the yarn board 54 to corresponding yarn receiving apertures 40 in the extractor plate 38.
From the extractor plate 38, each of the yarns 30 is directed into the yarn inlet end 28 of a respective yarn guide passageway 26 so as to pass through the yarn guide passageway 26 and extend from the yarn outlet end 32 of the yarn guide passageway 26. Each of the yarns 30 is then directed to a yarn processing machine.
During insertion of the yarns 30 into the respective yarn guide passageways 26, the bladder member 42 of each of the clamp members 36 is maintained in its deflated configuration so as not to impede movement of the yams 30 into the yarn guide passageways 26.
Preferably air blown down the tubes 50 assists insertion of the yarns 30 into the yarn inlet ends 28 of the yarn guide passageways 26.
Once the yarns 30 are located within the yarn guide passageways 26, the bladder member 42 of each of the clamp members 36 is inflated so as to move the clamping surface defined by either the bladder member 42 or the wear strip 48, if present, towards the inner surface of the opposite side wall 46 of the respective yarn guide passageway 26 so as to clamp the respective yam 30 therebetween.
The clamping force provided by the clamping surfaces is determined by the extent to which each bladder members 42 is inflated.
In use, movement of the extractor plate 38 from its rest position to its extraction position causes the edges of the elongated yarn receiving apertures 40 formed in the extractor plate 38 to contact the yams 30 passing therethrough. This causes lengths of yarn 30 to be pulled from the respective yam packages to create loops 56 of yarn (Figure 3) upstream of the yarn inlet ends 28 of the yarn guide passageways 26.
The clamping force provided by the clamping surfaces in each of the yarn guide passageways 26 is chosen to ensure that movement of the extractor plate 38 from its rest position to its extraction position causes yarn 30 to be drawn from the yarn packages. Otherwise such movement of the extractor plate 38 will cause the yarns to be drawn from the yarn guide passageways 26. In this regard, it is preferable that the clamping force creates a tension in the yarns 30 downstream of the yarn guide passageways 26 that exceeds the tension in the yams 30 extending from the yarn packages.
Once the loops 56 of yarn are formed upstream of the yam inlet ends 28 of the yarn guide passageways 26, the extractor plate 38 is moved back to its rest
I
position. in this position the tension in the yarns 30 immediately upstream of the yarn inlet ends 28 of the yarn guide passageways 26 is minimized such that it is effectively zero. Consequently, when the yam processing machine pulls yarn 30 from the yarn guide passageways 26 the tension in the yarns 30 is determined solely by the clamping force provided by the clamp members 36 located in the yarn guide passageways 26.
In this maimer, the clamping force may be chosen such that the tension created in the yarns 30 extending from the yarn outlet ends 32 of the yarn guide passageways 26, when the yarns 30 are pulled into the yarn processing machine, optimizes the performance of the yarn processing machine. It is also possible to ensure that, as near as possible, the same amount of tension is created in each of the yarns 30 when the yarns 30 are pulled into the yarn processing machine.
The extractor plate 38 may be driven by an air cylinder, an electric motor, a mechanical linkage from the yarn processing machine or other means whose movement is synchronized with the yarn processing machine such that loops 56 of the yarns 30 are formed when the yarn processing machine is not pulling the yams from the yarn guide passageways 26.
in other embodiments the extraction mechanism may include an extractor 34 in the form of a wire grid 58 defining a series of yarn receiving apertures 60 between the wires 62, as shown in Figure 6.
In such an arrangement, the yarns 30 are directed through the yarn receiving apertures 60 in a similar manner to that described with reference to the yarn receiving apertures 40 formed in the extractor plate 38 shown in Figures 2, 3 and 5.
Similarly, the wire grid 58 is mounted so as to be movable between a rest position arid an extraction position in a similar manner to that described.with reference to the extractor plate 38 shown in Figures 2, 3 and 5.
In yet further embodiments the yarn guide 24 may itself define the extraction mechanism, thereby rendering the extractor 34 superfluous.
In one such embodiment, the yam guide 24 may be mounted so as to be movable laterally relative to the yarn board 54 between a rest position in which the yarn inlet ends 28 of the yarn guide passageways 26 are aligned with respective apertures 52 in the yarn board 54 (Figure 7) and an extraction position in which the yarn inlet ends 28 are offset from the respective apertures 52 in the yarn board 54 (Figure 8).
In another such embodiment, the yarn guide 24 may be mounted so as to be movable longitudinally relative to the yarn board 54 between a rest position in which the yarn inlet ends 28 of the yarn guide passageways 26 are aligned with an spaced a predetermined distance x from respective apertures 42 in the yarn board J5 54 (Figure 9) and an extraction position in which the yarn inlet ends 28 remain aligned with but are spaced a predetermined distance x y from the respective apertures 52 in the yarn board 54 (Figure 10).
As with the extractor 34 described earlier with reference to Figures 2 to 6, lateral or longitudinal movement of the yarn guide 24 in such embodiments, in use, causes lengths of yarn 30 to be pulled from respective yam packages to create loops of yarn upstream of the yam inlet ends 28 of the yarn guide passageways 26.
In these embodiments, where the yarn guide 24 is mounted so as to be movable laterally or longitudinally relative to the yarn board 54, the yarn guide 24 may be driven by an air cylinder, an electric motor, a mechanical linkage from the yarn processing machine or other means whose movement is synchronized with the yarn processing machine such that loops of the yarns 30 are formed when the yarn processing machine is not pulling the yarns 30 from the yarn guide passageways 26.
As outlined earlier, the clamping force provided by the clamping surfaces in each of the yam guide passageways 26 is chosen to ensure that movement of an extractor 34 in the form of an extractor plate 38 or a wire grid 58, or movement of the yarn guide 24, causes yarn 30 to be drawn from the yarn packages.
In this regard, the air pressure in the bladder member 42 of each of the clamp members 36 may be increased during movement of the extractor 34 or the yarn guide 24 to increase the clamping force provided in each clamp member 36 and thereby ensure that yarn 30 is drawn from the yarn packages and not from the yam guide passagcwavs 26.
io The air pressure in the bladder member 42 of each of the clamp members 36 may then be decreased, if necessary, when the yarn processing machine pulls yarn 30 from the yam guide passageways 26 so that the clamp members 36 provide the tension in the yarns 30 required by the yarn processing machine.
Such variations in the air pressure in the bladder member 42 of each of the clamp members 36 is particularly preferably in embodiments where the yarn guide 24 is movable longitudinally relative to the yarn board 54 to pull yarn 30 from the yam packages. in such embodiments there is less contact between the yarn 30 and other components such as an extractor plate 34, wire grid 58 and/or yarn guide 24 at the yam inlet ends 28. Frictional engagement between the yarn 30 downstream of the yarn board 54 is therefore minimized such that a larger clamping force may be required to ensure that yarn 30 is not drawn from the yarn guide passageways 26.
In yet further embodiments the inflatable bladders 42 of each of the clamp members 36 may be replaced by a flexible tension strips 64, as shown in Figures 11 and 12.
In such embodiments each flexible tension strip 64 may be mounted on a movable bar 66 so as to extend from one side wall 44 of the yarn guide passageway 26 towards the opposite side wall 46. In such arrangements the protruding end 68 of the flexible tension strip 64 defines a clamping surface, which is brought into contact with a yarn 30 located in the respective yarn guide passageway 26 on movement of the bar 66 towards the opposite side wall 46, as shown in Figure 12.
Ii is envisaged that in such arrangements the size of the clamping force provided by the tension strips 64 is determined by the extent to which the movable bars 66 are moved towards the opposite side walls 46 of the yarn guide passageways 26.
The clamping force is removed by moving the movable bars 66 away from the opposite side walls 46 of the yarn guide passageways 26, as shown in Figure 11.
While the embodiment shown in Figures 11 and 12 includes an extraction mechanism in the form of an extractor 34 including an extractor plate 38, it is envisaged that the flexible tension strips 64 could be used in embodiments where the yarn guide 24 defines an extraction mechanism and is mounted so as to be movable relative to the yarn board 54.

Claims (17)

  1. I. A yarn tension control mechanism for use with yarn arranged to be pulled from yarn packages into a yarn processing machine, the mechanism comprising: a yarn guide defining a plurality of yarn guide passageways, each yarn guide passageway including a yarn inlet end into which yarn from a yarn package is directed and a yarn outlet end from which said yarn is pulled into a yarn processing machine; an extraction mechanism to draw lengths of yarn from the yarn packages prior to the yarn being pulled into the yarn processing machine such that tension in the lengths of yarn upstream of the yarn inlet ends of the yarn guide passageways is minimized; and an adjustable clamp member provided in each yarn guide passageway between the yarn inlet end and the yarn outlet end to create a predetermined amount of tension in the yarn downstream of the clamp member when the yarn is pulled into the yarn processing machine.
  2. 2. A yarn tension control mechanism according to Claim I wherein the extraction mechanism is in the form of an extractor including an extractor member defining yarn receiving apertures through which yarn from the yarn packages extend prior to being directed into the yarn inlet ends of the respective yarn guide passageways, the extractor member being movable laterally relative to the yarn inlet ends to draw lengths of yarn from the yarn packages.
  3. 3. A yarn tension control mechanism according to Claim 2 wherein the extractor' member is in the form of an extractor plate defining a series of elongated yarn receiving apertures.
  4. 4. A yarn tension control mechanism according to Claim 2 wherein the extractor member is in the form of a wire grid defming a series of yam receiving apertures between the wires of the grid.
  5. 5. A yarn tension control mechanism according to any of Claims 2-4 wherein the extractor member is driven to move between a rest position where the am receiving apertures are aligned with the yarn inlet ends of the yarn guide passageways and an extraction position where the yarn receiving apertures are offset from the yam inlet ends of the yarn guide passageways.
  6. 6. A yarn tension control mechanism according to Claim 5 wherein movement of the extractor member is controllable to synchronize with the yarn processing machine such that lengths of yarn are formed when the yarn processing machine is not pulling yarn from the yarn outlet ends of the yarn guide passageways.
  7. 7. A yarn tension control mechanism according to Claim I wherein the yarn guide defines the extraction mechanism, the yarn guide being movable laterally relative to the yarn packages to draw lengths of yarn from the yarn packages. I5
  8. 8. A yarn tension control mechanism according to Claim 1 wherein the yarn guide defines the extraction mechanism, the yarn guide being movable longitudinally relative to the yarn packages to draw lengths of yarn from the yarn packages.
  9. 9. A yarn tension control mechanism according to Claim 7 or Claim 8 wherein movement of the yarn guide is controllable to synchronize with the yarn processing machine such that lengths of yarn are formed when the yarn processing machine is not pulling yarn from the yarn outlet ends of the yarn guide passageways.
  10. 10. A yarn tension control mechanism according to any preceding claim wherein each clamp member includes an inflatable bladder member mounted on an inner surface of a side wall of the respective yarn guide passageway, each bladder member being selectively inflatable to extend towards the opposite side wall of the respective yarn guide passageway.
  11. 11 A yarn tension control mechanism according to Claim 10 wherein the degree of inflation of each bladder member is controllable so as to control the clamping force provided on inflation of the bladder member between opposed clamping surfaces defined on the bladder member and the opposite side wall of the respective yarn guide passageway.
  12. 12. A yarn tension control mechanism according to Claim 10 or Claim 11 wherein a wear strip is provided on each bladder member to define a clamping surface on the bladder member.
  13. 13. A yarn tension control mechanism according to any of Claims 1-9 wherein each clamp member includes a flexible tension strip extending from one side wall of the respective yarn guide passageway towards the opposite wall of the respective yarn guide passageway.
  14. 14. A yarn tension control mechanism according to Claim 13 wherein the flexible tension strip is mounted on a movable bar so as to be movable relative to the opposite side wall of the respective yarn guide passageway so as to adjust the clamping force provided between clamping surfaces provided on the end of the tension strip and the opposite side wall of the respective yarn guide passageway.
  15. 15. A method of controlling the tension of yarn to be pulled from yarn packages into a yarn processing machine comprising the steps of: (i) drawing lengths of yarn from yarn packages prior to the yarn being pulled into a yarn processing machine such that tension in the lengths of yarn is minimized; and (ii) applying an adjustable clamping force to the yarn downstream of the lengths of yarn and upstream of the yarn processing machine such that a predetermined tension is created in yarn to be pulled into the yarn processing machine.
  16. 16. A yarn tension control mechanism generally as herein described with reference to and/or as illustrated in Figures 2-12 of the accompanying drawings. n
  17. 17. A method of controlling the tension of yarn to be pulled from yarn packages into a yarn processing machine generally as herein described with reference to and/or as illustrated in Figures 2-12 of the accompanying drawings.
GB0620746A 2006-10-19 2006-10-19 Yarn tension control mechanism Withdrawn GB2442955A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0620746A GB2442955A (en) 2006-10-19 2006-10-19 Yarn tension control mechanism
BE2007/0506A BE1017889A3 (en) 2006-10-19 2007-10-19 WIRE TENSION CONTROL.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0620746A GB2442955A (en) 2006-10-19 2006-10-19 Yarn tension control mechanism

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Publication Number Publication Date
GB0620746D0 GB0620746D0 (en) 2006-11-29
GB2442955A true GB2442955A (en) 2008-04-23

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GB (1) GB2442955A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017077454A1 (en) 2015-11-03 2017-05-11 Nv Michel Van De Wiele Yarn tensioning system and method for keeping a yarn which is taken from a yarn storage system to a yarn take-off system of a weaving machine under tension

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Publication number Priority date Publication date Assignee Title
US1695814A (en) * 1925-11-11 1928-12-18 Foster Machine Co Yarn-compensating device for creels
US4290565A (en) * 1980-03-13 1981-09-22 Smith Leonard R Yarn tension device
US4378096A (en) * 1979-11-28 1983-03-29 Burlington Industries, Inc. Tension control for top effect yarn
GB2158110A (en) * 1984-05-03 1985-11-06 Benninger Ag Maschf Improvements in or relating to a thread tensioning apparatus for use with a bobbin creel
US5752549A (en) * 1995-05-11 1998-05-19 N. V. Michel Van De Wiele Work thread-tensioning and pull-back device for jacquard pile weaving machine creel
US20040048045A1 (en) * 2000-09-12 2004-03-11 Thomsen Peter Niels Web with sealed pockets

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Publication number Priority date Publication date Assignee Title
DE2758335C2 (en) * 1977-12-27 1986-04-17 W. Schlafhorst & Co, 4050 Mönchengladbach Thread brake
DE10028190A1 (en) * 2000-06-09 2001-12-20 Fraunhofer Ges Forschung Brake assembly for running yarns/ribbons has a guide body for their movement and a flexible cushion to act on them through a controlled inner fluid pressure
GB2378189B (en) * 2001-08-02 2005-04-27 Griffith Textile Mach Ltd Yarn feed apparatus
GB0503790D0 (en) * 2005-02-24 2005-03-30 Griffith Textile Mach Ltd A yarn carrier

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1695814A (en) * 1925-11-11 1928-12-18 Foster Machine Co Yarn-compensating device for creels
US4378096A (en) * 1979-11-28 1983-03-29 Burlington Industries, Inc. Tension control for top effect yarn
US4290565A (en) * 1980-03-13 1981-09-22 Smith Leonard R Yarn tension device
GB2158110A (en) * 1984-05-03 1985-11-06 Benninger Ag Maschf Improvements in or relating to a thread tensioning apparatus for use with a bobbin creel
US5752549A (en) * 1995-05-11 1998-05-19 N. V. Michel Van De Wiele Work thread-tensioning and pull-back device for jacquard pile weaving machine creel
US20040048045A1 (en) * 2000-09-12 2004-03-11 Thomsen Peter Niels Web with sealed pockets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017077454A1 (en) 2015-11-03 2017-05-11 Nv Michel Van De Wiele Yarn tensioning system and method for keeping a yarn which is taken from a yarn storage system to a yarn take-off system of a weaving machine under tension
EP3842371A1 (en) 2015-11-03 2021-06-30 Vandewiele NV Yarn tensioning system for keeping a yarn which is taken from a yarn storage system to a yarn take-off system of a weaving machine under tension

Also Published As

Publication number Publication date
GB0620746D0 (en) 2006-11-29
BE1017889A3 (en) 2009-10-06

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