US3575217A - Device for storing weft material in weaving machines - Google Patents

Device for storing weft material in weaving machines Download PDF

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Publication number
US3575217A
US3575217A US808396A US3575217DA US3575217A US 3575217 A US3575217 A US 3575217A US 808396 A US808396 A US 808396A US 3575217D A US3575217D A US 3575217DA US 3575217 A US3575217 A US 3575217A
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United States
Prior art keywords
weft
container
combination
weft material
set forth
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Expired - Lifetime
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US808396A
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English (en)
Inventor
Erwin Pfarrwaller
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Sulzer AG
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Sulzer AG
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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
    • 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
    • D03D47/368—Air chamber storage devices

Definitions

  • This invention relates to a device for storing weft material in weaving machines, and more particularly, to weaving machines having a weft bobbin disposed outside the shed of the machine during picking.
  • weft picking means such as a gripper shuttle, a picking needle, a water jet or an air jet.
  • a weft picking means such as a gripper shuttle, a picking needle, a water jet or an air jet.
  • These devices have required a plurality of rotating components, for example, a rotary winding drum or a rotary winding eye.
  • the weft material has been taken off the drums or from a supply bobbin over end and thus has become twisted.
  • the twisted weft material especially when in tape fonn, has caused openings to form in the cloth made therefrom.
  • friction forces of significant properties have arisen so as to interfere with and complicate the picking operation of the weft material.
  • the warp tapes In contrast to the weft tapes, the warp tapes have been relatively easy to process without twisting since they are wound untwisted onto the warp of a weaving machine and guided by suitable healds in the heald shaft and by a suitable reed and thereby straightened.
  • the weft tape has been wound in an untwisted manner on to the weft bobbin, the weft has become twisted when taken off the bobbin or stored in an over end manner.
  • the invention provides a storage device which comprises a container or receptacle which is positioned in a nonrotating manner between a weft bobbin and a shed of a weaving machine for laying-in of a certain length of weft material for subsequent picking into the shed.
  • the container is generally of a box-shaped cross section with an internal thickness corresponding to the width of the tapelike weft material which is to be laid into the container in the form of loops or pleats, i.e. as concertina folds.
  • the container further has a first opening to receive the supplied weft material from the bobbin and a second opening through which the weft material is withdrawn for picking into the shed.
  • the container is straight and is disposed in a vertical position while in another embodiment the container is curved. In this latter embodiment, the inlet and outlet openings of the container are situated at approximately the same level.
  • the invention provides a drive for moving theweft material into the container.
  • This drive is positioned upstream of the container and is also provided with a movable guide member for laying the weft material into the container in a looped manner or other regular pattern.
  • the drive includes a pulley drive which can be driven from the main shaft of the weaving machine.
  • the supply bobbin for the weft material is also rotated so that the weft material is removed tangentially rather than over end so as to remain untwisted.
  • the container allows a large number of, for example, loops of a weft tape, to be stored so that a large enough supply is available for picking. Further, the weft material can be withdrawn very easily and with practically no friction for picking. This is especially true of synthetic weft material. Since this synthetic material is especially smooth, practically no tangling, crossing and the like of the material can occur in the container. Also, the weft material can be withdrawn from the storage container and picked without twisting. This is essential if, for example, the weft material is a plastic tape, such as, a polypropylene or polyethylene tape.
  • a close woven cloth can be made where the warp tapes are also untwisted as required, for example, for sacks used for picking purposes (e.g. for granular material such as sugar or the like).
  • the invention also provides a means to maintain a flow of air in the container so as to facilitate storage and passage of the weft material and a means to control the quantity of weft material supplied to the container per unit time according to the supply of weft material already in the container.
  • FIG. 1 illustrates a cross-sectional view of a device according to the invention as well as a schematic of various cooperating components of a weaving machine;
  • FIG. 2 illustrates a view of the container taken on line II-II of FIG. 1;
  • FIG. 3 illustrates a view similar to FIG. 2 of a modified container according to the invention
  • FIG. 4 illustrates a side view of a modified drive for the weft material according to the invention
  • FIG. 5 illustrates a side view of FIG. 4.
  • FIG. 6 illustrates a modified container of curved shape according to the invention.
  • a weft bobbin 1 is rotatable on a pivot 2 on a weaving machine base 3, only parts of which are shown for clarity.
  • the bobbin 1 has a core 10 which carries a brake disc 4 on which a brake weight 5 pivotally mounted by a pivot 6 on the machine base 3 bears so that the bobbin is slightly braked during operation.
  • a weft tape 7 approximately 4 mm. wide and made, for example, of polypropylene, is wound on to the bobbin ll. This tape is fed by a drive means such as a pair of pulleys 8, 9 to a storage container 11 located downstream of the bobbin 1.
  • One pulley 8 is attached to a shaft 12 driven by an electric motor 13 as indicated by an arrow 15, by way of a belt or chain drive 14.
  • the other pulley 9 is biased under the influence of a compression spring 16 towards the driven pulley 8 so as to grip and drive the weft tape 7 therebetween towards the container 11.
  • the pulley 9 may be driven by the pulley 8, by way of a gearing.
  • the shaft 12 carries a cam 17, over which a fork 19 which is pivotable at an intermediate point 18 engages.
  • This fork 19 extends beyond the pivot point 18 in the form of a rod 21 with a guide eye 22 on its free end.
  • the cam 17 rotates and causes the fork 19'to oscillate so that the guide eye 22 moves continually backwards and forwards between the positions 22a, 22b shown by chain lines, as indicated by an arrow 23.
  • the bobbin 1 is arranged with respect to the pulleys 8, 9 so that the weft tape 7 is pulled off the bobbin 1 tangentially by the pulleys 8, 9. Further, the pulley 8 is continuously driven so that the bobbin turns continuously in the direction of the arrow 241.
  • the weft tape 7 is also threaded or otherwise engaged by the oscillating guide eye 22 so as to be laid into the storage container 11 in the form of loops 24'.
  • the container 11 is generally of a rectangular box-shaped cross section and has an inlet opening 23 at the top to receive the delivered weft tape 7 and an outlet opening 26 at the bottom to permit removal of the received weft tape.
  • the outlet opening 26 is positioned to allow the weft tape 7 to pass out through a yarn brake 27, a fixed eye 28, a yarn withdrawing mechanism 29 and another fixed eye 31, as is known, of the weaving machine 3.
  • the front end 7a of the tape is gripped by a gripper shuttle 32 and inserted (arrow 33) into a shed 36 formed by warp tapes 34 in the upper shed position and warp tapes 35 in the lower shed position.
  • the storage container 11 has an internal width less than its length and height and somewhat greater than the internal width d of the weft tape 7.
  • the width 0 of the box is therefore adapted to the width d of the weft.
  • the width 0 of the box may be adjustable, so that the box can also be used for weft tapes of other widths.
  • the individual loops 24' in HO. 1 are shown with excessively large curves and gaps; in reality the loops are relatively close together, due to the loops above them.
  • a control means comprising a pair of light barriers are attached to the container 11.
  • Each light barrier consists of a light source 41, 42 on one side of the container and an associated photoelectric cell 43, 44 offset relative to the light source on the other side of the container.
  • the purpose of this offset arrangement is to make the rays from the light sources pass through a fairly large number of layers of weft tape, so that the difference between the light intensity obtained at the photoelectric cell when layers of weft tape are present and the light intensity occurring when no layers are present is very marked. The control process is therefore more reliable.
  • the light sources 41, 42 are on one circuit 45 whereas the photoelectric cells 43, 44 are on two other circuits 46, 47. All three circuits 45-47 are connected to an electronic control device or an amplifier 48 which is supplied from a power source 49.
  • the motor 13 which drives the pulleys 8, 9 is also connected to the amplifier 48, by way of three phases, R, S, T and a neutral wire 0.
  • the motor 13 can run at two speeds. For example, when the storage process in the container 11 begins, the motor 13 runs at full speed, so that the stock of tape gradually rises in the container 11. If the tape reaches the light barrier 41, 43, an electrical signal goes to the electronic device 48 via the circuit 46 to reset the motor 13, for example at half-speed. The quantity of tape laid in through the opening per unit time is therefore reduced.
  • the motor 13 is stopped when the tape reaches the light barrier 42, 44 via a signal from the circuit 47. lf, after falling below the light barrier 42, 44 the stock of tape gradually drops below the barrier 41, 43, while the motor 13 is running at half-speed, the motor 13 is set at full speed again whereupon the stock rises again, and so on.
  • the container 11 In order to facilitate movement of the loops 24' of weft tape 7 through the container 11, the container 11 is formed with a sievelike bottom 51 and extends downwards in the form of a funnellike portion 52 below the bottom 51 and an air intake 53 of a blower 54 is connected to the funnellike portion 52.
  • the blower 52 is operated so as to maintain a permanent downward stream of air (arrow 55) in the container 11 so that the loops 24' move down fast enough during picking, making room for more loops to be laid in above.
  • the tape 7 is coated with an antistatic fluid.
  • This fluid is applied to the tape 7 by mounting a dish 56 filled with the fluid below the spring biased pulley 9 so that the lower portion of the pulley dips into the dish 56. Consequently, rotation of the pulley 9 continually brings some fluid on to the tape 7 which is to be laid into the container 11 so that any electrostatic charge, such as may arise in the case of synthetic material due to friction disappears. As a result, the individual loops 24 do not adhere to the inside wall of the container 11, but drop down inside without being attracted by the container.
  • the storage container 11a can alternatively be formed with internal vertical grooves 61, as by being corrugated so that the grooves 61 serve to guide the stream of air through the container.
  • the shaft 63 for the pulley 9 carries a cam 71 which cooperates with a link 72.
  • the free end of this link 72 engages a yarn guide lever 67'pivotally mounted on the shaft 66 at an intemiediate point 65.
  • This lever 67 is further connected by a shaft 75 (FIG. 5) to another yarn guide lever 670 on the opposite side of the pulley 8 which also pivots freely about the shaft 66 for the pulley 8.
  • the shaft 73 carries a guide roll 69 which is driven by the pulley 8 by way ofa belt drive 74 and a roll 76, and is in frictional contact with another roll.
  • a yarn guide 75 is also mounted on the yarn guide levers 67, 67a to further guide the weft tape laterally between the rolls 69, 71 while reciprocating with the levers 67, 67a.
  • the container can alternatively be curved, for example, as a semicircular storage container 81.
  • the container 81 also has a sievelike portion 51a approximately in the middle to which the air intake 53 in connected.
  • the light sources 41, 42 and photoelectric cells 43, 44 are situated opposite one another in this embodiment so as to be on about the same horizontal plane.
  • the form of container 81 is used in a similar manner with respect to that described above. However, in this case, the weft tape 7 enters and leaves the container 81 at the same level. Also, as the weft tape 7 is drawn out as shown, the tape is not subjected to the weight of any tape above.
  • the storage container may have shapes other than those shown in FIGS. 1 and 6, especially if the storage device is to be used, for example, for weft material in filament form.
  • the storage container may, for example, be cylindrical, and the filament to be stored may be laid in the container in the form of, for example, a circle or a horizontal figure eight.
  • Such a shape of storage container is especially suitable if a synthetic weft is used, which of course has a particularly smooth surface.
  • the stream of air in the storage container may be omitted or may run in the opposite direction, ie from bottom to top.
  • the stream of air loosens the weft material and may keep it more or less suspended.
  • the weft material may come out particularly easily and free of tangles.
  • the weft material may be taken off the weft bobbin over end and then fed to a storage container, for example, through the pulleys 8, 9. In this case, however, the weft material will twist as it comes off the bobbin. Even so, a storage container for laying in the weft material and storing a certain length of weft may be useful.
  • any other suitable control device for adapting the quantity of weft material fed to the storage container to the length already stored may be used.
  • a storage device for storing the weft material comprising a container positioned between said weft bobbin and said shed for receiving and laying in a certain length of weft material said container having a first opening at one end for receiving the weft material from said weft bobbin and a second opening at an opposite end for delivering the stored weft material to said shed.
  • weft material is a weft tape and said container is of box shape having an internal width sized to receive the width of the weft tape whereby the weft tape can be laid into said container in the fonn of loops.
  • a storage device for storing the weft material comprising a container positioned between said weft bobbin and said shed for receiving and laying in a certain length of weft material said container being curved with an inlet opening at one end for receiving the weft tape and an outlet opening at the same level as said inlet opening at the opposite end for withdrawal of the stored weft tape.
  • said storage device further comprises a drive means between said weft bobbin and said container for directing the weft material towards said container.
  • said drive means includes a pair of pulleys for gripping the weft material therebetween, and a motor means for rotating at least one of said pulleys to withdraw the weft material from said weft bobbin.
  • a storage device for storing the weft material comprising a container positioned between said weft bobbin and said shed for receiving and laying in a certain length of weft material and a movable guide means upstream of said container for guiding the weft material into said container in a regular fashion to form the weft material into loops within said container.
  • said storage device further comprises a drive means between said weft bobbin and said guide means for directing the weft material towards said container, said drive means being connected to said movable guide means to oscillate said guide means in response to actuation of said drive means.
  • said storage device further comprises means for directing a flow of air through said container.
  • said means includes a sievelike bottom in said container and an air suction means communicating through said sievelike bottom for drawing a stream of air from the top of said container through said sievelike bottom.
  • said storage device further includes drive means for driving the weft material into said container and a control means for controlling said drive means to control the quantity of weft material laid into said container per unit of time in response to the quantity of weft material in said container.
  • control means includes at least one photoelectric means mounted on said container to detect the presence of weft material at a predetermined level in said container and to emit a signal in response thereto for changing the speed of said drive means.
  • said photoelectric means includes a light source on one side of said container and a photoelectric cell on the opposite side in offset relation to said light source whereby the range from said light source can pass through a plurality of portions of the weft material in said container.
  • a storage device for storing the weft material comprising a container positioned between said weft bobbin and said shed for receiving and laying in a certain length of weft material and means for electrically discharging weft material containing a synthetic plastic material supplied to said container.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US808396A 1968-03-21 1969-03-19 Device for storing weft material in weaving machines Expired - Lifetime US3575217A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH420968A CH471261A (de) 1968-03-21 1968-03-21 Einrichtung zum Speichern des Schussmaterials bei Webmaschinen

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US3575217A true US3575217A (en) 1971-04-20

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US808396A Expired - Lifetime US3575217A (en) 1968-03-21 1969-03-19 Device for storing weft material in weaving machines

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US (1) US3575217A (de)
AT (1) AT292597B (de)
CH (1) CH471261A (de)
DE (1) DE1913830A1 (de)
FR (1) FR2004391A1 (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3776282A (en) * 1972-07-10 1973-12-04 Vyzk Vyvojovy Ustav Vseobe Method of and apparatus for metering and storing weft yarn for intermittent insertion into the shed of shuttleless looms
US3848820A (en) * 1971-11-24 1974-11-19 H Stutz Method and apparatus for handling a yarn drawn at a high speed from a bobbin by a processing machine
US3865149A (en) * 1972-06-16 1975-02-11 Rueti Ag Maschf Device for storing a thread portion
US3871421A (en) * 1972-10-09 1975-03-18 Sulzer Ag Weaving machine having a variable weft yarn path
US3918501A (en) * 1973-06-21 1975-11-11 Du Pont Canada Feeder for tape weaving machine
US4244313A (en) * 1978-04-17 1981-01-13 Automatech Industries Inc. Automatic, in situ bobbin spool loading
US4418728A (en) * 1980-12-17 1983-12-06 Aktiengesellschaft Adolph Saurer Weft thread-storage apparatus for a loom, especially a gripper loom
US4590973A (en) * 1983-12-23 1986-05-27 Milliken Research Corporation Loom and method of weaving
DE3503642A1 (de) * 1984-12-10 1986-06-12 Peter 2000 Hamburg Labentz Unterwasserboot mit seiten- und tiefenruder
US4947897A (en) * 1986-04-07 1990-08-14 E. I. Du Pont De Nemours And Company Method for producing a fabric made from thermoplastic melt impregnated tow
US5016679A (en) * 1989-03-28 1991-05-21 Sulzer Brothers Limited Elastically mounted pneumatic thread feed device
US5150739A (en) * 1991-07-11 1992-09-29 E. I. Du Pont De Nemours And Company Weft feeding through an accumulator without substantial twist
US20040221909A1 (en) * 2001-10-01 2004-11-11 Ikuo Horibe Method of producing reinforcing fiber woven fabric and production device therefor and reinforing fiber woven fabric
CN102634913A (zh) * 2012-04-06 2012-08-15 经纬纺织机械股份有限公司 无捻度变化储纬装置
CN103156277A (zh) * 2013-02-21 2013-06-19 南通大学 防捻补丝系统
US20150203999A1 (en) * 2012-07-11 2015-07-23 Lindauer Dornier Gmbh Device for the Intermediate Storage of Band-Like Weft Material for a Weaving Machine and Weaving Machine Having Such a Device
CN104831455A (zh) * 2015-06-01 2015-08-12 苏州市晨彩纺织研发有限公司 一种内旋式储纬器
CN105002637A (zh) * 2015-07-28 2015-10-28 苏州市丹纺纺织研发有限公司 一种摇摆式储纬器
CN105671755A (zh) * 2016-04-15 2016-06-15 苏州市丹纺纺织研发有限公司 一种气流式捕纬装置
CN105862233A (zh) * 2016-05-27 2016-08-17 苏州市丹纺纺织研发有限公司 一种静电式储纬装置
CN109415852A (zh) * 2016-07-11 2019-03-01 Iro有限公司 零扭转纱线进给设备
US20220002918A1 (en) * 2018-12-12 2022-01-06 Tape Weaving Sweden Ab Shedding method and apparatus using air pressure

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS148467B1 (de) * 1970-04-28 1973-02-22
FR2558854B1 (fr) * 1984-02-01 1986-05-23 Alsacienne Constr Mat Tex Procede et dispositif pour deposer a plat une reserve de fil de trame sous forme de zig zag
FR2566436B2 (fr) * 1984-02-01 1990-09-21 Alsacienne Constr Mat Tex Perfectionnement a un dispositif deposant a plat une reserve de fil de trame sous forme de zigzag
DE3740943A1 (de) * 1987-12-03 1989-06-15 Wolfgang Baumann Schalung fuer das bauwesen
DE102005010534A1 (de) * 2005-03-04 2006-09-07 Ontec Elektro- Und Steuerungstechnik Gmbh Schussfadenzuführvorrichtung für Webmaschinen, insbesondere Greiferwebmaschinen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233634A (en) * 1961-12-08 1966-02-08 Prince Jidosha Kogyo Kabushiki Device for controlling length of weft yarn on fluid jet shuttleless loom
FR1510153A (fr) * 1966-12-02 1968-01-19 Perfectionnements aux métiers à tisser sans navette pour la réalisation de tissusà trame en forme de ruban
US3395865A (en) * 1966-07-07 1968-08-06 Burlington Industries Inc Method of and apparatus for neutralizing static electricity on filling picks of looms and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233634A (en) * 1961-12-08 1966-02-08 Prince Jidosha Kogyo Kabushiki Device for controlling length of weft yarn on fluid jet shuttleless loom
US3395865A (en) * 1966-07-07 1968-08-06 Burlington Industries Inc Method of and apparatus for neutralizing static electricity on filling picks of looms and the like
FR1510153A (fr) * 1966-12-02 1968-01-19 Perfectionnements aux métiers à tisser sans navette pour la réalisation de tissusà trame en forme de ruban

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848820A (en) * 1971-11-24 1974-11-19 H Stutz Method and apparatus for handling a yarn drawn at a high speed from a bobbin by a processing machine
US3865149A (en) * 1972-06-16 1975-02-11 Rueti Ag Maschf Device for storing a thread portion
US3776282A (en) * 1972-07-10 1973-12-04 Vyzk Vyvojovy Ustav Vseobe Method of and apparatus for metering and storing weft yarn for intermittent insertion into the shed of shuttleless looms
US3871421A (en) * 1972-10-09 1975-03-18 Sulzer Ag Weaving machine having a variable weft yarn path
US3918501A (en) * 1973-06-21 1975-11-11 Du Pont Canada Feeder for tape weaving machine
US4244313A (en) * 1978-04-17 1981-01-13 Automatech Industries Inc. Automatic, in situ bobbin spool loading
US4418728A (en) * 1980-12-17 1983-12-06 Aktiengesellschaft Adolph Saurer Weft thread-storage apparatus for a loom, especially a gripper loom
US4590973A (en) * 1983-12-23 1986-05-27 Milliken Research Corporation Loom and method of weaving
DE3503642A1 (de) * 1984-12-10 1986-06-12 Peter 2000 Hamburg Labentz Unterwasserboot mit seiten- und tiefenruder
US4947897A (en) * 1986-04-07 1990-08-14 E. I. Du Pont De Nemours And Company Method for producing a fabric made from thermoplastic melt impregnated tow
US5016679A (en) * 1989-03-28 1991-05-21 Sulzer Brothers Limited Elastically mounted pneumatic thread feed device
US5150739A (en) * 1991-07-11 1992-09-29 E. I. Du Pont De Nemours And Company Weft feeding through an accumulator without substantial twist
US20040221909A1 (en) * 2001-10-01 2004-11-11 Ikuo Horibe Method of producing reinforcing fiber woven fabric and production device therefor and reinforing fiber woven fabric
US7134458B2 (en) * 2001-10-01 2006-11-14 Toray Industries, Inc. Method of producing reinforcing fiber woven fabric and production device therefor and reinforcing fiber woven fabric
CN102634913A (zh) * 2012-04-06 2012-08-15 经纬纺织机械股份有限公司 无捻度变化储纬装置
US20150203999A1 (en) * 2012-07-11 2015-07-23 Lindauer Dornier Gmbh Device for the Intermediate Storage of Band-Like Weft Material for a Weaving Machine and Weaving Machine Having Such a Device
US9328437B2 (en) * 2012-07-11 2016-05-03 Lindauer Dornier Gesellschaft Mbh Device for the intermediate storage of band-like weft material for a weaving machine and weaving machine having such a device
CN103156277A (zh) * 2013-02-21 2013-06-19 南通大学 防捻补丝系统
CN104831455A (zh) * 2015-06-01 2015-08-12 苏州市晨彩纺织研发有限公司 一种内旋式储纬器
CN105002637A (zh) * 2015-07-28 2015-10-28 苏州市丹纺纺织研发有限公司 一种摇摆式储纬器
CN105671755A (zh) * 2016-04-15 2016-06-15 苏州市丹纺纺织研发有限公司 一种气流式捕纬装置
CN105862233A (zh) * 2016-05-27 2016-08-17 苏州市丹纺纺织研发有限公司 一种静电式储纬装置
CN109415852A (zh) * 2016-07-11 2019-03-01 Iro有限公司 零扭转纱线进给设备
US20220002918A1 (en) * 2018-12-12 2022-01-06 Tape Weaving Sweden Ab Shedding method and apparatus using air pressure
US11946175B2 (en) * 2018-12-12 2024-04-02 Tape Weaving Sweden Ab Shedding method and apparatus using air pressure

Also Published As

Publication number Publication date
FR2004391A1 (de) 1969-11-21
DE1913830A1 (de) 1969-10-09
AT292597B (de) 1971-09-10
CH471261A (de) 1969-04-15

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