CN101713117A - Negative yarn feeder with weft-braking device - Google Patents

Negative yarn feeder with weft-braking device Download PDF

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Publication number
CN101713117A
CN101713117A CN200910175743A CN200910175743A CN101713117A CN 101713117 A CN101713117 A CN 101713117A CN 200910175743 A CN200910175743 A CN 200910175743A CN 200910175743 A CN200910175743 A CN 200910175743A CN 101713117 A CN101713117 A CN 101713117A
Authority
CN
China
Prior art keywords
reel
yarn
brake component
weft
feeder
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.)
Pending
Application number
CN200910175743A
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Chinese (zh)
Inventor
P·吉奥瓦尼
M·若格罗
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.)
LGL Electronics SpA
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LGL Electronics SpA
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 LGL Electronics SpA filed Critical LGL Electronics SpA
Publication of CN101713117A publication Critical patent/CN101713117A/en
Pending legal-status Critical Current

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    • 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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/22—Guides for filamentary materials; Supports therefor adapted to prevent excessive ballooning of material
    • 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
    • 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
    • D03D47/36—Measuring and cutting the weft
    • D03D47/361—Drum-type weft feeding devices
    • D03D47/364—Yarn braking means acting on the drum
    • D03D47/365—Brushes
    • 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)
  • Looms (AREA)

Abstract

The invention discloses a negative yarn feeder with weft-braking device. Yarn loops are unwound from a stationary weft-winding drum (12) during a weft insertion. A weft-braking device locks the yarn (F) unwinding from the drum (12) at the end of the insertion, and comprises at least one braking member (34) which is arranged by side of the drum (12) near its delivery end (12a) and is movable under control of actuator means (37) between a resting position in which it is spaced from the outer surface of the drum (12) and does not interfere with the unwinding yarn (F), and an operative position in which it engages the outer surface of the drum (12) and cooperates with it to brake the yarn (F).

Description

Negative yarn feeder with weft-braking device
Technical field
The present invention relates to a kind of passive type (negative) yarn feeder, it is provided with weft-braking device, this weft-braking device is used for the yarn coil in the final step locking expansion of yarn being inserted loom, and last step is especially crucial under the situation of gripper shuttle loom.
As everyone knows, so-called " passive type " yarn feeder comprises static reel, is wound with a plurality of yarn coils by the motorization flywheel on this reel, forms the parallel storing.Receiving when request from loom, coil launches from reel, passes the device of the tension force that is used to control yarn then, and finally is fed to loom.The main purpose of the yarn feeder of the above-mentioned type is the coil amount substantial constant that keeps on the reel, makes the tension force minimum from the yarn of reel thus.
Main under the situation of gripper shuttle loom, yarn feeder is typically provided with " anti-air ring (anti-balloon) " device, and the funnel-shaped piece of the air ring that this device mainly forms when being used to be contained in from feeder expansion yarn constitutes.For example in EP0719354, EP1094138 and EP1149793, disclosed the device of the type.Specifically, in EP1149793, anti-air ring funnel-shaped piece has the frustoconical profile that the equally spaced a plurality of bars by a plurality of busbar arrangement along truncated cone limit, reduce thus dust deposition and with the friction of funnel-shaped piece inner surface.
As everyone knows, in final inserting step, excessive yarn tends to launch from reel owing to inertia.In order to overcome this shortcoming, the known feeder that provides from US3834635 with static brush, this static brushing is set to the inner surface of anti-air ring funnel-shaped piece and contacts.The yarn that launches passes between static brush and the funnel-shaped piece, and when inserting end, when loom is finished the pull yarn, it is braked and therefore prevent its further expansion by friction.
The shortcoming of said apparatus is during inserting, and static brush is also braked yarn, and when not needing braking action, yarn should pass freely through as far as possible on the contrary.This ambient influnence yarn is presented the smoothness of process and is caused because the increase of fricative dust between yarn and the static brush, and these dusts are easy to be deposited in the funnel-shaped piece, influence its operation thus.
US3834635 has also disclosed the air-flow that is used to brake yarn.But this technical scheme very complexity and cost is very high, because the air feeding means must pass flywheel rotation, that yarn twines.
Therefore, main purpose of the present invention provides a kind of yarn feeder with weft-braking device, and it overcomes the known above-mentioned shortcoming of device based on brush, but it is more simple in structure and manufacturing cost is lower than pneumatic means.
Realize hereinafter that by yarn feeder with more tangible above purpose and further feature, simultaneously, dependent claims is stated other advantage by accidental quality of the present invention with feature described in the claim 1.
With reference to describing the present invention in more detail with preferable, the non-exclusive embodiment shown in the unrestricted example in the accompanying drawing.
Description of drawings
Fig. 1 is the stereogram that is provided with according to the negative yarn feeder of weft-braking device of the present invention;
Fig. 2 is the front view of the yarn feeder of Fig. 1;
Fig. 3 is the partial view of Fig. 2 section of III-III along the line;
Fig. 4 is vertical view of the part of Fig. 1;
Fig. 5 is the cutaway view of Fig. 4 section of V-V along the line, and the detail drawing of the magnification ratio of weft-braking device of the present invention is shown.
The specific embodiment
With reference to last figure, negative yarn feeder 10 comprises static reel 12 and rotary flyweights 14, is bearing in an end of reel 12 and by motor 15 drivings this rotary flyweights coaxial line, is wound on and forms storing S on the reel thus to be used for coil with yarn F.When receiving request from loom, yarn F is launched from reel 12, loom preferably is the gripper shuttle loom (not shown) in the present invention.
Anti-air ring funnel-shaped piece 18 is vertically given prominence to and support to static reel 16 from motor field frame.Anti-air ring funnel-shaped piece 18 comprises the equally spaced a plurality of bars 20 along the busbar arrangement of truncated cone, these bars have an end of the less ring 22 that is attached to the less base portion that limits truncated cone, and the other end that is attached to the bigger ring 24 of the big base portion that limits truncated cone.The yarn guiding transmits the transmission end that eyelet 25 is arranged in anti-air ring funnel-shaped piece.
Be arranged in the front portion of reel 12 funnel-shaped piece 18 coaxial lines, make its big base surface to the transmission end of reel 12a.The inner surface of less ring 22 and bigger ring 24 tilts, and the diameter Da of the inner periphery of bigger ring 24 is advantageously less than the yarn winding diameter Dt (Fig. 3) of reel 12.Funnel-shaped piece 18 is attached under the control of the screw mechanism (not shown) that can be operated by knob 28 can change the end play between anti-air ring funnel-shaped piece 18 and the reel 12 thus along the sliding part 26 (Fig. 4) of static reel 16 slips.By adjusting knob 28, the gap L between the big base portion of anti-air ring funnel-shaped piece 18 and the transmission end 12a of reel can be minimum according to yam count.This controllability is partly from the above-mentioned size relationship between the diameter of the inner periphery of the diameter of reel and bigger ring 24, can reduce even avoid to form in the upstream of funnel-shaped piece air ring, also be like this even anti-air ring funnel-shaped piece 18 is not provided with the cylindrical part that has around the end of reel 12.
Be attached to static reel 16 and a pair of movable brake component is fixed on the relative position of diameter (Fig. 5) around the ring-shaped bearing piece 30 of reel 12 near its transmission end 12a.Each brake component comprises the angled fan-shaped of bristle brush (hereinafter referred to as brushing 34), and bristle brush 34 anchors to the action bars 36 of the linear electromagnetic actuator 37 that is driven by the microprocessor (not shown).Preferably, the microprocessor of control actuator is also controlled feeder or loom.Bristle brush 34 can and isolated resting position of reel and operating position between move, it is received in the corresponding pedestal 38 of ring-shaped bearing piece 30 not interfere its tip engages of stretching out pedestal 38 and making the outer surface and the bristle of reel in the operating position with the yarn that launches in resting position.Microprocessor is programmed to predetermined instantaneous, and for example the position degree according to loom starts bristle brush.It is those skilled in the art's common practise that the intervention time of bristle brush is programmed, and therefore it is no longer provided to further specify.
During operation, during inserting, bristle brush 34 is received in the corresponding pedestal 38 and does not interfere with yarn, so yarn can freely launch and do not contact with bristle brush from reel.The funnel-shaped piece of regulating as mentioned above 18 prevents to form air ring.But in the final step of inserting, several instantaneous before the predetermined termination time, microprocessor is enabled bristle brush.Bristle brush cooperates with the outer surface of reel with its end, by the yarn (yarn extends between the outer surface of bristle brush and reel) of friction catch expansion, and finally is locked, and prevents excessive coil thus because inertia launches from reel.
As the skilled person will understand, for device according to the present invention, only when needed, promptly when insert finishing, apply braking action.Therefore, realize along the formation of sliding insertion and restriction dust.
This paper has described preferred embodiment of the present invention, but those skilled in the art also can carry out multiple change in the scope of claims certainly.Specifically, although comprise anti-air ring funnel-shaped piece and prevent effectively that based on the said modules of the brakes of bristle the formation of air ring and excessive coil from launching inserting when finishing, these two kinds of phenomenons are strict related, certainly brakes also can with other conventional anti-air ring funnel-shaped piece relating operation.In addition, brush by two fixing brakings of ring-shaped bearing piece, also more bristle brush can be installed certainly, for example isolated three or four bristle brush of equal angles although the foregoing description only is provided with at the diameter relative position; On the contrary, in some cases, a bristle brush is just much of that.But as conspicuous to those skilled in the art, bristle brush also can be moved by dissimilar conventional actuator, for example electric actuators.

Claims (10)

1. negative yarn feeder comprises: static parallel twines reel (12), and yarn coil twines reel (12) from described static parallel and launches during parallel inserts; And weft-braking device, described weft-braking device is used for the yarn (F) that locking launches from described reel (12) when described insertion finishes, it is characterized in that, described weft-braking device comprises at least one brake component (34), described brake component is arranged in the side of described reel (12) near the transmission end (12a) of described reel, and can between resting position and operating position, move under the control of actuating device (37), in described resting position, the outer surface of described brake component and described reel (12) is spaced apart and do not interfere with the yarn (F) of described expansion, in described operating position, described brake component is cooperated with the described outer surface cooperation of described reel (12) and with described outer surface and is braked described yarn (F).
2. negative yarn feeder as claimed in claim 1, it is characterized in that, described actuating device comprises the linear actuators (37) that is provided with action bars (36), described brake component (34) anchors to described action bars (36), and described brake component is along moving between described resting position and described operating position with respect to the radial direction of described reel (12).
3. negative yarn feeder as claimed in claim 1 or 2, it is characterized in that, described at least one brake component (34) is installed to the supporting member (30) with described feeder one, and in described resting position, described brake component (34) is received in the corresponding pedestal (38) of described supporting member (30).
4. negative yarn feeder as claimed in claim 3 is characterized in that, described supporting member (30) shape forms around the ring of described reel (12) and supports at least two with the isolated described brake component of equal angles (34).
5. as each described negative yarn feeder in the claim 1 to 4, it is characterized in that described brake component is bristle brush (34).
6. negative yarn feeder as claimed in claim 5 is characterized in that, described bristle brush (34) shape forms angled fan-shaped.
7. as each described negative yarn feeder in the claim 1 to 6, it is characterized in that, described feeder also comprises the anti-air ring funnel-shaped piece (18) of somewhat frusto-conical, be arranged in the front portion of described reel (12) described funnel-shaped piece coaxial line, the big base surface of described funnel-shaped piece is to the described transmission end of described reel (12a), and the diameter at the penetralia edge of the described big base portion of described funnel-shaped piece is less than the described coiling diameter of described reel (12).
8. negative yarn feeder as claimed in claim 7 is characterized in that, described anti-air ring funnel-shaped piece (18) is supported in the axial adjustable position with respect to described reel (12).
9. as claim 7 or 8 described negative yarn feeders, it is characterized in that, described anti-air ring funnel-shaped piece (18) comprises a plurality of equidistant bar (20) along the busbar arrangement of cone soma, and described bar has an end of the less ring (22) that is attached to the less base portion that limits described cone soma and is attached to the other end of the bigger ring (24) of the described big base portion that limits truncated cone.
10. weft-braking device, described weft-braking device can be installed on the negative yarn feeder (10) that is provided with parallel winding reel (12), be used for the described yarn (F) that locking launches from described reel when inserting end, it is characterized in that, described weft-braking device comprises at least one brake component (34), described brake component can be connected to described feeder (10) in the side of described reel (12), and can between resting position and operating position, move under the control of actuating device (37), in described resting position, described brake component and described reel (12) are spaced apart and do not interfere with the yarn (F) of described expansion, in described operating position, described brake component cooperates with the described outer surface of described reel (12) near the transmission end of described reel (12) (12a) and cooperates with described outer surface brakes the yarn of described expansion.
CN200910175743A 2008-09-25 2009-09-24 Negative yarn feeder with weft-braking device Pending CN101713117A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08425630A EP2169099A1 (en) 2008-09-25 2008-09-25 Negative yarn feeder with weft-braking device
EP08425630.4 2008-09-25

Publications (1)

Publication Number Publication Date
CN101713117A true CN101713117A (en) 2010-05-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910175743A Pending CN101713117A (en) 2008-09-25 2009-09-24 Negative yarn feeder with weft-braking device

Country Status (3)

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US (1) US20100071799A1 (en)
EP (1) EP2169099A1 (en)
CN (1) CN101713117A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102453989A (en) * 2010-10-18 2012-05-16 吴江市浪潮纺织有限公司 Cyclic yarn guide device for weaving machine
CN103184649A (en) * 2011-12-28 2013-07-03 爱吉尔电子股份公司 Weft-braking device for yarn feeders provided with a stationary drum
CN103290607A (en) * 2012-02-22 2013-09-11 爱吉尔电子股份公司 Controlled-tension yarn-feeding apparatus for textile machines, with yarn recovering function
CN103924371B (en) * 2013-01-10 2017-04-26 爱吉尔电子股份公司 Yarn-feeding assembly for textile machines
CN107826874A (en) * 2016-09-16 2018-03-23 美名格－艾罗有限公司 Yarn feeding device
CN109476167A (en) * 2016-07-15 2019-03-15 Nec平台株式会社 Roll paper printer
CN109837650A (en) * 2017-11-29 2019-06-04 美名格－艾罗有限公司 Control the method for yarn feeding and the weaving loom with the system with yarn feeder
CN111648006A (en) * 2020-06-11 2020-09-11 贾数珍 Quantitative yarn storage device of textile machine based on gravity sensing

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DE102018115604A1 (en) * 2018-06-28 2020-01-02 Memminger-Iro Gmbh Yarn feeder
USD1026049S1 (en) * 2022-09-30 2024-05-07 Btsr International S.P.A. Yarn feeder

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102453989A (en) * 2010-10-18 2012-05-16 吴江市浪潮纺织有限公司 Cyclic yarn guide device for weaving machine
CN103184649A (en) * 2011-12-28 2013-07-03 爱吉尔电子股份公司 Weft-braking device for yarn feeders provided with a stationary drum
CN103184649B (en) * 2011-12-28 2015-11-18 爱吉尔电子股份公司 For being provided with the weft brake of the yarn feeder of stationary drum
US9303338B2 (en) 2011-12-28 2016-04-05 L.G.L. Electronics S.P.A. Weft-braking device for yarn feeders provided with a stationary drum
CN103290607A (en) * 2012-02-22 2013-09-11 爱吉尔电子股份公司 Controlled-tension yarn-feeding apparatus for textile machines, with yarn recovering function
CN103290607B (en) * 2012-02-22 2015-11-18 爱吉尔电子股份公司 There is the tension force controlled weft device for feeding for weaving loom that yarn reclaims function
CN103924371B (en) * 2013-01-10 2017-04-26 爱吉尔电子股份公司 Yarn-feeding assembly for textile machines
CN109476167A (en) * 2016-07-15 2019-03-15 Nec平台株式会社 Roll paper printer
US10960691B2 (en) 2016-07-15 2021-03-30 Nec Platforms, Ltd. Roll paper printer
CN107826874A (en) * 2016-09-16 2018-03-23 美名格－艾罗有限公司 Yarn feeding device
CN109837650A (en) * 2017-11-29 2019-06-04 美名格－艾罗有限公司 Control the method for yarn feeding and the weaving loom with the system with yarn feeder
CN111648006A (en) * 2020-06-11 2020-09-11 贾数珍 Quantitative yarn storage device of textile machine based on gravity sensing

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EP2169099A1 (en) 2010-03-31
US20100071799A1 (en) 2010-03-25

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Open date: 20100526