EP0098255A2 - Schussfadenspeicher für Düsenwebmaschinen - Google Patents

Schussfadenspeicher für Düsenwebmaschinen Download PDF

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Publication number
EP0098255A2
EP0098255A2 EP83850182A EP83850182A EP0098255A2 EP 0098255 A2 EP0098255 A2 EP 0098255A2 EP 83850182 A EP83850182 A EP 83850182A EP 83850182 A EP83850182 A EP 83850182A EP 0098255 A2 EP0098255 A2 EP 0098255A2
Authority
EP
European Patent Office
Prior art keywords
weft
reservoir
control
drum
control pin
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Withdrawn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
EP83850182A
Other languages
English (en)
French (fr)
Other versions
EP0098255A3 (de
Inventor
Yujiro Takegawa
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.)
Tsudakoma Corp
Original Assignee
Tsudakoma Industrial Co 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 Tsudakoma Industrial Co Ltd filed Critical Tsudakoma Industrial Co Ltd
Publication of EP0098255A2 publication Critical patent/EP0098255A2/de
Publication of EP0098255A3 publication Critical patent/EP0098255A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • D03D47/367—Monitoring yarn quantity on the drum
    • 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
    • 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
    • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
    • D03D47/363—Construction or control of the yarn retaining devices

Definitions

  • the present invention relates to a weft reservoir for fluid jet looms, and more particularly relates to improvement in construction and operation of a weft reservoir in particular suited for alternate weaving by two sorts of wefts on a fluid jet loom on which weft is wound about a reservoir drum made up of conical and cylindrical sections by operation of a rotary yarn guide synchronized with loom running, and reserved thereon and delivered therefrom for insertion of weft under proper pin control.
  • the side of arrangement closer to the supply source of weft will be referred in general to as “the upstream side” whereas the side closer to the main jet nozzle is referred in general to as “the downstream side”.
  • Insertion of weft on a loom in general starts at a moment between 90 and 110° crank angle and terminates at a moment between 250 and 270° crank angle.
  • the weft is unwound from the reservoir drum in the mode of free delivery and the so-called controlled delivery of the weft starts just before the end of the insertion of weft.
  • insertion of weft should start at about 90 crank angle and terminate at about 270" crank angle.
  • a control pin When a control pin is located within its operative zone, the control pin is able to come into engagement with a weft on the reservoir drum and hinder its delivery from the reservoir drum. When a control pin is located in its stand-by zone, the control pin stays out of engagement with a weft on the reservoir drum and allows delivery of the weft from the reservoir drum. More specifically, a control pin is first registered at the most advanced position in the operative zone during its operation. Then the control pin recedes from the most advanced position, leaves the operative zone while concurrently intruding into the stand-by position, and is finally registered at the most receded position in the stand-by zone. On return route, the control pin advances from the most receded position in the stand-by position, leaves the stand-by zone while concurrently intruding bock into the operative zone, and is again registered at the most advanced position in the operative zone for the next operation.
  • control pin or pins leave the operative zone by moving radially away from the outer periphery of the reservoir drum to such an extent as to stay out of any engagement with the weft on the reservoir drum, and intrude into the operative zone by moving radially towards the outer periphery of the reservoir drum to such an extent as to come into engagement with the weft on the reservoir drum.
  • coils of weft for two successive insertion of weft have to be reserved on a reservoir drum in a fairly separated state, and delivered independently at the respective moments of weft insertion.
  • Such reservation and delivery of weft have to be carried out concurrently and compatibly with continuous supply of weft from the source of supply by the rotary yarn guide.
  • three sets of cam driven control pins are arranged one after another in the axial direction of a reservoir drum each for timed movement along a substantially straight path of travel in the radial direction of the reservoir drum between operative and stand-by zones.
  • FIG.land2 One embodiment of the weft reservoir in accordance with the present invention is shown in Figs.land2, in which a stationary reservoir drum is used. Needless to say, however, the present invention can well be applied to a weft reservoir provided with a rotary reservoir drum, too.
  • weft reservoir can well be used for weaving by one sort of weft, too.
  • three control pins are all arranged outside the reservoir drum so that they should move radially away from and towards the outer periphery of the reservoir drum. But, this arrangement may be reversed. That is, the three control pins may all be arranged inside the reservoir drum so:that they should appear on and disappear from the outer periphery of the reservoir drum. Further, some may be arranged outside and the other may be arranged inside the reservoir drum.
  • the weft reservoir includes a reservoir drum 1 made up of an upstream side conical section la and a downstream side cylindrical section lb and a slot 1C extending in the axial direction of the reservoir drum 1 is formed about the border berween the conical and cylindrical sections la and lb.
  • a magagine 10 is arranged on the outer side of and in a fixed relationship to the reservoir drum 1 and a slot 10a extending in the axial direction of the reservoir drum 1 is formed in the wall of the magagine 10 facing the reservoir drum 1.
  • the slot 10a in the magagine 10 extends substantially in the area corresponding to the slot lc formed in the reservoir drum 1.
  • Three sets of control pins P1 to P3 are directed towards the outer periphery of the reservoir drum 1 through the slot 10a in the magagine 10 and their drive cams Cl to C3 are encased within the magagine 10 as later described in more detail.
  • a horizontal guide 15 is fixedly arranged within the magagine 10 through which the control pins P1 to P3 slidably extend for substantially straight movement.
  • Compression springs 112, 122 and 132 are interposed between the upper surface of the guide 15 and enlarged heads of the control pins P1 to P3 in order to keep the points of the control pins P1 to P3 radially away from the outer periphery of the reservoir drum 1. In this way, the control pins P1 to P3 are resiliently kept in their stand-by zone unless any external force act on their enlarged heads.
  • a support shaft 14 is fixedly arranged in the magagine 10 whilst extending in a direction normal to the axial direction of the reservoir drum 1, and three sets of bifurcate levers 11 to 13 are idly inserted, in a juxtaposed relationship to each other, over the support shaft 14.
  • a cam shaft 17 is also rotatably arranged in the magagine 10 in parallel to the support shaft 14, and operationally coupled to a proper source of drive such as the main drive shaft for the rotary yarn guide for rotation synchronized with loom running.
  • Three sets of drive cams C1 to C2 are secured to the cam shaft 17 in a juxtaposed arrangement. In the drawing, only a part of the outline of the third drive cam C3 is illustrated for simplification purposes.
  • each lever may be provided with a plain upstream end in combination with a roller rotatably coupled to the head of a corresponding control pin as long as a sort of sliding contact exists between the two mating elements for straight movement of the control pin.
  • the first lever 11 further.rotatably carries at its downstream end a cam follower 113 kept in resilient rolling contact with the first drive cam C1 by assistance of a tension spring (not shown) interposed between its body and a spring holder 16 secured to the magagine 10, the second lever 12 rotatably carries at its downstream end a cam follower 123 kept in resilient rolling contact with the second drive cam (2 by assistance of a tension spring (not shown) interposed between its body and the spring holder 16, and the third lever 13 rotatably carries at its downstream end a cam follower 133 kept in resilient rolling contact with the third drive cam C3 by assistance of a tension spring 134 interposed between its body and the spring holder 16.
  • weft reservoir in accordance with the present invention will hereinafter be explained in connection with a 2x 2 type alternate weaving by two sorts of wefts in which two wefts of the first sort and two wefts of the second sort are inserted alternately. That is, assuming that two sorts of wefts A and B are used, insertion of weft is carried out in the order of A, A, B, B, A,A, BB. To this end, two sets of weft reservoirs of substantially same function are used in combination.
  • Each of the drive cams C1 to C2 completes its one cycle rotation within a period of 0 to 1440° crank angle, weft delivery for the first weft insertion is carried out within a period of 0 to 360° crank angle, and weft delivery for the second weft insertion is carried out within the period of 360 to 7 2b o crank angle on one weft reservoir. During the remaining period of 720 to 1440° crank angle, weft delivery for insertion of weft is carried out twice in succession on the other weft reservoir.
  • Fig.3 four coils of weft are assumed to provide the length of weft necessary for one insertion of weft. Further in the illustration, black circles indicate coils of weft used for the first insertion of weft whereas white circles indicate coils of weft used for the second insertion of weft.
  • a moment I in Fig.3 corresponds to 90° crank angle.
  • the first and second control pins P1 and P2 stay standstill at the most advanced positions in their operative zones whereas the third control pin P3 has already started to recede from the most advanced position in its operative zone by moving radially outwards along a substantially straight path of travel.
  • Coils of weft for the second insertion are kept between the first and second control pins P1 and P3 whereas coils of weft for the first insertion are on the verge of delivery on the downstream side of the second control pin P2.
  • a moment II in Fig.3 corresponds to 180° crank angle.
  • the first and second control pins P1 and P2 keep staying standstill at the most advanced position in their operative zones whereas the third control pin P3, as a result of its continued recession, has already reached the most receded position in its stand-by zone.
  • the coils of weft for the second insertion are still kept between the first and second control pins P1 and P2 whereas the coils of weft on the downstream side of the second control pin P2 have been almost delivered and the first insertion of weft is going to terminate.
  • a moment III in Fig. 3 corresponds to 270' crank angle.
  • the first control pin P1 still remains at the most advanced position in its operative zone
  • the second control pin P2 has started to recede from the most advanced position in its operative zone
  • the third control pin P3 has started to advance from the most receded position in its stand-by position.
  • Reservation of weft for the first weft insertion of the next cycle has already started on the upstream side of the first control pin P1
  • the coils of weft for the second weft insertion are still held in the area between the first and second control pins P1 and P2, and weft delivery for the first insertion of weft has already terminated on the downstream side of the second control pin P2.
  • the first insertion of weft has terminated at this moment.
  • a moment IV in Fig.3 corresponds to 360° crank angle.
  • the first control pin P1 is at the most advanced position in its operative zone
  • the second control pin P2 is now registered at the most receded position in its stand-by position
  • the third control pin P3 has arrived at the most advanced position in its operative position.
  • Reservation of weft continues on the upstream side of the first control pin P1 and the coils of weft, which have been held in the area between the first and second control pins P1 and P2, now automatically move to the area between the second and third control pins P2 and P3 due to difference in diameter between the conical and cylindrical sections 1a and lb of the reservoir drum 1.
  • the first and second control pins P1 and P2 should be arranged in the axial direction of the reservoir drum 1 so that the area between them should at least partly include the conical section 1a of the reservoir drum 1. In this way, the coils of weft for the second weft insertion are assigned from the second to third control pin about this moment.
  • a moment V in Fig.3 corresponds to 450° crank angle.
  • the first control pin P1 remains at the most advanced position in its operative zone
  • the second control pin P2 rests at the most receded position in its stand-by position
  • the third control pin P3 has started to recede from the most advanced position in its operative zone. Reservation of weft continues on the upstream side of the first control pin P1 and the coils of weft, which have been passed over to the third control pin P3, are now on the verge of delivery for the second insertion of weft.
  • a moment V1 in Fig.3 corresponds to 540° crank angle.
  • the first control pin P1 is registered at the most advanced position in its operative position whilst the second and third control pins P2 and P3 are registered at the most receded positions in their stand-by zones. Reservation of weft further develops on the upstream side of the first control pin P1, the coils of weft in the area between the second and third control pins P2 and P3 have been almost delivered, and the second insertion of weft is going to terminate.
  • a moment VEin Fig.3 corresponds to 630° crank angle.
  • the first control pin P1 has already started to recede from the most advanced position in its operative zone
  • the second control pin P2 stays standstill at the most receded position in its stand-by zone
  • the third control pin P3 has started to advance from the most receded position in its stand-by zone. Reservation of weft further advances on the upstream side of the first control pin P1, the coils of weft in the area between the second and third control pins P2 and P3 have all been delivered, and the second insertion of weft has already terminated.
  • a moment VIII in Fig.3 corresponds to 720° crank angle.
  • the first and second control pins P1 and P2 are registered at the most receded positions in their operative zone and the third control pin P3 has already arrived at the most advanced position in its operative zone.
  • Coils of weft which have been held on the upstream side of the first control pin P1, now automatically move to the area between the second and third control pins P2 and P3 due to difference in diameter between the conical and cylindrical sections la and lb of the reservoir drum 1.
  • it is perferable that at least the first control pin P1 should be located in the area of the conical section la of the reservoir drum 1.
  • a moment 1X in Fig.3 corresponds to 810° crank angle.
  • the first control pin P1 is registered at the most receded position in its operative zone
  • the second control pin P2 has already reached the most advanced position in its operative zone
  • the third control pin P3 stays standstill at the most advanced position in its operative-zone.
  • Coils of weft for the first insertion of weft of the next cycle are held in the area between the second and third control pins P2 and P3. This state of holding will be maintained untill a moment XVI in Fig.3 which corresponds to 1440° crank cycle.
  • a moment X in Fig.3 corresponds to 900° crank angle.
  • the first to third control pins P1 to P3 all maintain their positions at the preceding moment IX.
  • a moment XI in Fig.3 corresponds to 990 crank angle.
  • the positions of the control pins P1 to P3 are unchanged. Reservatiion of weft for the second weft insertion of the next cycle has already started on the upstream side of the second control pin P2.
  • the first control pin P1 is mainly involved in reservation of the weft for the first weft insertion
  • the second control pin P1 is mainly involved in reservation of weft for the second weft insertion
  • the third control pin P3 controls delivery of weft for the first and second weft reservations.
  • the coils of weft for the first weft insertion are assigned from the first to third control pin and the coils of weft for the second weft insertion are assigned from the second to third control pin at different moment.
  • coils of weft for different weft insertions are fairly separately reserved and independently subjected to delivery through phased instruction into and recession out of the operative zones by three sets of control pins arranged one after another in the axial direction of a reservoir drum.
  • a slide contact is provided between the head of each control pin and the upstream end of an associated lever so that the control pin should be driven for a movement in the radial direction of the reservoir drum along a substantially straight path of travel by assistance of the fixed guide 15.
  • the head of the control pin may be directly pivoted to the upstream end of the associated lever, thereby assuring an approximately straight path of travel for the control pin.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP83850182A 1982-06-25 1983-06-27 Schussfadenspeicher für Düsenwebmaschinen Withdrawn EP0098255A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP96391/82 1982-06-25
JP1982096391U JPS59482U (ja) 1982-06-25 1982-06-25 流体噴射式織機用緯糸貯留装置

Publications (2)

Publication Number Publication Date
EP0098255A2 true EP0098255A2 (de) 1984-01-11
EP0098255A3 EP0098255A3 (de) 1984-03-07

Family

ID=14163656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83850182A Withdrawn EP0098255A3 (de) 1982-06-25 1983-06-27 Schussfadenspeicher für Düsenwebmaschinen

Country Status (3)

Country Link
EP (1) EP0098255A3 (de)
JP (1) JPS59482U (de)
KR (1) KR900008680B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990004057A1 (de) * 1988-10-06 1990-04-19 Iro Ab Fadenspeicher- und -liefervorrichtung

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700971A1 (de) * 1987-01-15 1988-07-28 Heidelberger Druckmasch Ag Vorrichtung zur positionierung eines stellgliedes
JPH0535855Y2 (de) * 1987-01-19 1993-09-10

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022112A1 (de) * 1979-06-22 1981-01-07 Tsudakoma Kogyo Kabushiki Kaisha Einführung einer Schussfadenserie in abwechselnder zwei nach zwei Schussfadenfolge in einer schützenlosen Düsen-Webmaschine
EP0024561A1 (de) * 1979-08-10 1981-03-11 Nissan Motor Co., Ltd. Schussfadenvorrichtung für schützenlose Webmaschinen
GB2062700A (en) * 1979-09-24 1981-05-28 Rueti Te Strake Bv Method for weaving with a shuttleless weaving machine and weft preparation device to be used therein
EP0051811A1 (de) * 1980-11-12 1982-05-19 Nissan Motor Co., Ltd. Schussfadenspeicher für schützenlose Webmaschinen
EP0054247A1 (de) * 1980-12-11 1982-06-23 Nissan Motor Co., Ltd. Schussfadenspeicher für schützenlose Webmaschinen
DE3050149A1 (de) * 1980-04-01 1983-02-10 Gebrüder Sulzer AG, 8401 Winterthur Schussfadenspeichervorrichtung fuer webmaschinen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0022112A1 (de) * 1979-06-22 1981-01-07 Tsudakoma Kogyo Kabushiki Kaisha Einführung einer Schussfadenserie in abwechselnder zwei nach zwei Schussfadenfolge in einer schützenlosen Düsen-Webmaschine
EP0024561A1 (de) * 1979-08-10 1981-03-11 Nissan Motor Co., Ltd. Schussfadenvorrichtung für schützenlose Webmaschinen
GB2062700A (en) * 1979-09-24 1981-05-28 Rueti Te Strake Bv Method for weaving with a shuttleless weaving machine and weft preparation device to be used therein
DE3050149A1 (de) * 1980-04-01 1983-02-10 Gebrüder Sulzer AG, 8401 Winterthur Schussfadenspeichervorrichtung fuer webmaschinen
EP0051811A1 (de) * 1980-11-12 1982-05-19 Nissan Motor Co., Ltd. Schussfadenspeicher für schützenlose Webmaschinen
EP0054247A1 (de) * 1980-12-11 1982-06-23 Nissan Motor Co., Ltd. Schussfadenspeicher für schützenlose Webmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990004057A1 (de) * 1988-10-06 1990-04-19 Iro Ab Fadenspeicher- und -liefervorrichtung
US5170822A (en) * 1988-10-06 1992-12-15 Iro Ab Yarn storage and feed device with axially adjustable yarn stopping element

Also Published As

Publication number Publication date
EP0098255A3 (de) 1984-03-07
JPS59482U (ja) 1984-01-05
KR840005182A (ko) 1984-11-05
KR900008680B1 (ko) 1990-11-26

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Inventor name: TAKEGAWA, YUJIRO