EP0460129A1 - Device for feeding warp threads. - Google Patents
Device for feeding warp threads.Info
- Publication number
- EP0460129A1 EP0460129A1 EP90917134A EP90917134A EP0460129A1 EP 0460129 A1 EP0460129 A1 EP 0460129A1 EP 90917134 A EP90917134 A EP 90917134A EP 90917134 A EP90917134 A EP 90917134A EP 0460129 A1 EP0460129 A1 EP 0460129A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gripper
- clamping
- thread
- hook
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
- D03J1/14—Apparatus for threading warp stop-motion droppers, healds, or reeds
Definitions
- the invention relates to a device for drawing in warp threads in tableware elements of a weaving machine, with an oscillatingly drivable, needle-shaped pulling-in element for the warp threads.
- the pull-in member is formed by a so-called pull-in needle, which has a hook-like end, with the help of which the warp threads are caught and drawn in.
- these pull-in needles are also not advantageous in terms of textile technology. This is because the warp threads are practically deflected by 180 ° in the naturally very thin hook-shaped end and slide over their deflecting edge when drawn in, which means a not inconsiderable strain and possibly also influencing the thread on its surface.
- the invention is now intended to provide a drawing-in element with which the warp threads are drawn in as gently and safely as possible.
- this object is achieved in that the pull-in member has a clamping gripper.
- the clamping gripper clamps the warp threads and not just hooks them into them, a safe insertion of all types of warp threads is guaranteed. In addition, these are maximally protected since the warp threads are only clamped at one point, but are not otherwise stressed by additional friction.
- a preferred embodiment of the pull-in member is characterized in that the clamping gripper is carried by a flexible gripper band and that a channel-like guide is provided for the pull-in member.
- the inventive design of the pull-in device and its guide channel enable an increase in the working speed of the pull-in machine while at the same time improving its reliability, on the one hand by minimizing the mass of the pulling-in device and on the other hand by guiding it exactly. In this way, the pull-in device is precisely positioned even with a high pull-in frequency, so that incorrect feeds are practically impossible.
- the invention is explained in more detail below on the basis of an exemplary embodiment and the drawings; 1 shows an overall perspective view of a drawing-in machine according to the invention, FIG. 2 shows a perspective view of the drawing-in module of FIG
- FIG. 3 shows the drawing-in device
- Fig. 4 is a view in the direction of arrow IV of Fig. 2
- Fig. 5 is a view in the direction of arrow V of Fig. 4
- Fig. 6 is a section along the line VI-VI of Fig. 5, Fig. 7 different Cross sections through the in Figs. 4 to
- FIG. 6 shown guide channel for the pull-in member
- Fig. 8 shows a detail of Fig. 7c in an enlarged
- FIG. 10 a sectional view of the drive of the pull-in device, FIG. 10, a variant of FIG. 5,
- FIG. 11 is a section along the 'line XI-XI of Fig. 10.; and FIG. 12 shows a detail relating to FIG. 2.
- the drawing-in machine consists of a base frame 1 and of various assemblies arranged therein, each of which represents a functional module.
- a warp beam carriage 2 with a warp beam 3 arranged on it can be seen.
- the warp beam carriage 2 is equipped with a so-called lifting device 4 for holding tion of a frame 5 on which the warp threads KF are stretched, coupled. This clamping takes place before the actual pulling-in and at a location separate from the drawing-in machine, the frame 5 being positioned at the lower end of the lifting device 4 in the immediate vicinity of the warp beam 3.
- the warp beam carriage 2 with the warp beam 3 and the lifting device 4 are moved to the so-called upgrade side of the pulling-in machine and the frame 5 is lifted upwards by the lifting device 4 and then assumes the position shown.
- the frame 5 and the warp beam 3 are shifted in the longitudinal direction of the base frame 1 from left to right. With this shifting, the warp threads KF are guided past a thread separation stage 6 and are separated and divided in the process. After the division, the warp threads are cut off and presented to a pull-in needle 7, which forms part of the so-called pull-in module.
- the sectioning device used in the USTER TOPMATIC warp knitting machine USTER - registered trademark of Zellweger Uster AG
- a screen device 8 can be recognized, which belongs to an operating station and serves to display machine functions and machine malfunctions and for data input.
- the operating station which forms part of a so-called programming module, also contains an input level for the manual input of certain functions, such as crawl speed, start / stop, repetition of processes, and the like.
- the drawing-in machine is controlled by a control module which contains a control computer and which is arranged in a control box 9. In addition to the control computer, this control box contains a module computer for each so-called main module, the individual module computers being controlled and monitored by the control computer.
- the main modules of the drawing-in machine in addition to the modules already mentioned, drawing module, yarn module, control module and programming module, are also the strand, the lamella and the sheet module.
- the warp threads and the individual elements into which the warp threads are to be drawn are fed in on the upgrade side, and the so-called crockery with the warp threads drawn in can be removed on the dismantling side.
- the warp thread monitor slats LA are stacked in hand magazines, and the full hand magazines are hung in inclined feed rails 11, on which they are transported to the right, towards the pull-in needle 7. There they are separated and brought into the feed position. After pulling in, the lamellae LA arrive on lamella support rails 12 on the dismantling side.
- the strands LI are lined up on rails 13 and manually or automatically shifted to a separation stage on them. Then the strands LI are individually brought into their retracted position and, after they have been drawn in, are distributed to the corresponding heald frames 14 on the dismantling side. The reed is also moved past the pull-in needle 7 step by step, the corresponding leaf tooth being opened for the pull-in. After being drawn in, the sheet is also on the removal side. To the right of the heald frames 14 is a part of the reed WB. This illustration is to be understood purely illustratively, because the reed is of course located on the upgrade page in the position of the frame 5 shown.
- a so-called crockery trolley 15 is provided on the dismantling side. This is inserted into the base frame 1 together with the slat support rails 12, heald frames 14 and a holder for the reed attached to it and carries the dishes with the drawn-in warp threads KF after being drawn in.
- the warp beam carriage 2 with the warp beam 3 is located directly in front of the dishwashing carriage 15. Now the dishes are reloaded from the dishwashing carriage 15 onto the warp beam carriage 2 by means of the lifting device 4, which then carries the warp beam 3 and the drawn-in dishes and to the weaving machine in question or can be moved to an intermediate storage.
- the main component of the pull-in needle 7 forming the pull-in module is formed by a gripper belt 16 and a clamping gripper 17 carried by the latter, which are guided in a channel-like guide 18 in the lifting direction (arrow P).
- This extends from the frame 5 in a straight direction to an arcuate end part 18 'and is interrupted in the area of the tableware elements (lamellae LA, strands LI and woven sheet WB) in order to feed the tableware elements to the retracted position and enable their further transport after moving in (arrow S).
- the gripper belt 16 is provided with evenly spaced transport holes 19 and is driven by a motor-driven belt wheel 20 which has cam-shaped projections which engage in the transport holes 19 on its circumference.
- FIG. 3 shows, on an enlarged scale of approximately 3.5: 1, the front end of the gripper belt 16 and the clamp gripper 17 attached to it, which consists of two parts, a gripper hook 17 'and a clamp part 17' *. These two parts are designed to be resilient to one another, preferably in such a way that the clamping part 17 * 'is spread apart at its tip by approximately 2.5 mm from the gripper hook 17' without external force.
- the warp thread KF to be drawn in is offered to the clamping gripper 17 in such a way that when the clamping gripper is moved into the thread layer it reaches the gap between the gripper hook 17 'and the clamping part 17''.
- the warp thread KF is also presented to the clamping gripper 17 in an oblique position in such a way that the gripper hook 17 *, which is open at the bottom, presses on the thread from above when it is retracted, so that it even slides into the hook mouth. If the gripper 17 now moves out of the thread layer, the warp thread is initially carried along by the gripper hook, until the gripper 17 enters the guide 18. Then the hook and the clamping part are pressed together and the warp thread KF is clamped. To increase the clamping effect, both parts of the clamping gripper 17 have teeth 21.
- the clamp gripper 17 is thus formed on its front part, which clamps the warp thread, in the manner of tweezers which are pressed together by the guide 18.
- the gripper hook 17 'and the clamping part 17''consist of metal, the gripper belt 16 is preferably a carbon fiber belt.
- the gripper hook 17 ' is longer in the region of its right end in FIG. 3 than the clamping part 17''and has on its part projecting beyond the clamping part 17''cylindrical projections, the division of which corresponds to that of the transport holes 19, and their diameter relative to the transport holes 19 has slight excess.
- the gripper belt 16 is pressed with its transport holes 19 onto these projections, as a result of which the connection between the clamping gripper 17 and the gripper belt is established.
- This connection is detachable and has the advantage that if the gripper belt 16 breaks, the clamping gripper 17 can be reused.
- the two parts of the clamping gripper 17 are connected to one another by spot welding. This results in a sandwich design.
- the gripper belt 16 is thinner than the clamping gripper 17 and thus has lateral play in the guide channel 18, even if the gripper hook and the clamping part are pressed together by the guide channel (see also FIG. 8).
- 4 and 5 show a top view and a front view of the guide channel
- FIG. 6 shows a longitudinal section
- FIGS. 7a to 7c show cross sections along the lines AA (FIG. 5), BB (FIG. 6) and CC (Fig. 4), all on a scale of '1: 1
- FIG. 8 shows an enlarged detail from FIG. 7c on a 10: 1 scale.
- the guide channel 18 essentially consists of a profile bar 22 made of aluminum or of a suitable plastic, such as, for example, polymethylene oxide, which has a guide groove 23.
- the guide channel 18 has a plurality of interruptions 31, in each of which a thread ejector lever 32 is arranged.
- This ejector lever 32 can, as can be seen from FIGS. 4 and 5, by on one pneumatically drivable pistons attached and projecting downward fingers are formed, which in their rest position shown with full lines in FIG. 4 lie behind the plane of the gripper belt 16 and for thread ejection in the direction of the arrow S (FIG. 2) be moved to the dashed position. Since the lamellae LA, the strands LI and the reed WB are also transported in the direction of the arrow S together with the thread to be removed from the guide channel 18, the ejection of the thread is supported by the harness elements.
- rotatable thread ejectors can also be used.
- the thread ejectors are designed like impellers and consist of fingers projecting radially from a hub.
- the hub is mounted on a bearing block fastened to the profile rod 22 and can be driven by a motor, the fingers dipping into the interruption 31 from above, turning further forward towards the slot 25 and moving the thread out of the guide channel 18.
- the individual thread ejectors are monitored by light barriers crossing the plane of movement of the fingers.
- the cam-shaped projections 33 are hemispherical and have a diameter of 1.5 to 2 mm, preferably 1.8 mm and a pitch of 4 mm.
- the clamping gripper 17 must first release the thread. This release is done by controlled opening of the gripper hook 17 'and clamping element 17 * • in the area of the rear support point of the clamping gripper 17, which is based on Fig. 2 in the interruption K between the part of Füh ⁇ approximately channel 18 at the belt wheel 20 and the in Direction to the next part of the web leaf WB.
- the clamping gripper 17 is opened in that the part of the guide channel 18 which guides the clamping gripper, that is to say the guide gap between the cover rails 24 and the clamping jaws 26, widens in a funnel shape by appropriate shaping of the clamping jaws, so that the clamping part 17 ′′ from Can grapple hook hook 17 '.
- This extension is preferably located in the region of the end of the part of the guide channel 18 which is arranged between the belt wheel and the reed and faces the interruption K.
- the thread is now pulled through the interruption K by the hook 17 'until the clamping gripper 17 reaches its rear turning point when entering the part of the guide channel 18 at the belt wheel 20. Even before this reversal point is reached, the thread is placed through a lever in the suction opening of a suction nozzle, which draws the thread in and thereby fixes it.
- the lever is designed like a pointer with a hook-shaped end. It is guided between two circular sector-shaped disks arranged transversely to the guide channel and projects with its hook-shaped end between the disks during its working stroke.
- the thread located in the guide channel 18 lies on the circumference of the disks in front of the pointer-like lever and is moved laterally out of its path by this lever and is guided along the contour of the disks to the suction nozzle.
- the pointer-like lever is driven by an eccentric in such a way that its hook-shaped end during the idle stroke, ie from the suction nozzle back to the guide channel 18, runs below the contour of the disks mentioned and then pierces them before the next working stroke, and so on further.
- the suction nozzle is preferably inclined at approximately 45 ° to the axis of the guide channel with its suction opening, which enables the thread to be taken over optimally.
- the USTER textile testing equipment has proven to be the most suitable suction nozzle TENSORAPID and USTER TESTER (USTER - registered trademark of Zellweger Uster AG) have been used.
- FIG. 12 shows a detail of the takeover of a warp thread KF by the clamping hook 17 (FIG. 2).
- a sensor is arranged in the plane of movement of the loop-shaped warp thread KF, which checks each time it is pulled in whether a warp thread has really been drawn in.
- This sensor consists of a resilient sensor bracket 34 with a fixed counterpart 35 which overlap one another.
- the sensor bracket 34 is pivoted away from the counterpart 35 into the position shown in dashed lines, which is detected by a suitable sensor, for example by an inductive sensor 36.
- the warp thread to be drawn is therefore under control at all times, which ensures maximum reliability and operational safety. This inevitably leads to a further increase in the productivity of the drawing-in machine described, which is already increased due to the proposed use of the clamping gripper and gripper belt. In addition there is the extremely gentle treatment of the warp threads.
Landscapes
- Textile Engineering (AREA)
- Engineering & Computer Science (AREA)
- Looms (AREA)
- Knitting Machines (AREA)
- Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Warping, Beaming, Or Leasing (AREA)
- Ropes Or Cables (AREA)
- Coating With Molten Metal (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Treatment Of Fiber Materials (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Surgical Instruments (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH4598/89 | 1989-12-22 | ||
CH4598/89A CH679598A5 (en) | 1989-12-22 | 1989-12-22 | |
PCT/CH1990/000283 WO1991010003A1 (en) | 1989-12-22 | 1990-12-06 | Device for feeding warp threads |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0460129A1 true EP0460129A1 (en) | 1991-12-11 |
EP0460129B1 EP0460129B1 (en) | 1995-06-28 |
Family
ID=4279080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90917134A Expired - Lifetime EP0460129B1 (en) | 1989-12-22 | 1990-12-06 | Device for feeding warp threads |
Country Status (15)
Country | Link |
---|---|
US (1) | US5249339A (en) |
EP (1) | EP0460129B1 (en) |
JP (1) | JP2913422B2 (en) |
KR (1) | KR0140862B1 (en) |
AT (1) | ATE124477T1 (en) |
AU (1) | AU6742390A (en) |
CA (1) | CA2045565A1 (en) |
CH (1) | CH679598A5 (en) |
CZ (1) | CZ283051B6 (en) |
DE (1) | DE59009349D1 (en) |
DK (1) | DK0460129T3 (en) |
ES (1) | ES2073590T3 (en) |
PT (1) | PT96340A (en) |
RU (1) | RU2028394C1 (en) |
WO (1) | WO1991010003A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5909750A (en) * | 1997-06-12 | 1999-06-08 | Sanders; Falk-Hayo | Multiple stage device and method for manufacturing a woven fabric |
EP2147992A1 (en) | 2008-07-25 | 2010-01-27 | Stäubli AG Pfäffikon | Threading machine and method for threading warp yarns in elements of a weaving machine |
EP2199443A1 (en) | 2008-12-19 | 2010-06-23 | Stäubli AG Pfäffikon | Mobile drawing-in unit |
EP3772549A1 (en) | 2019-08-05 | 2021-02-10 | Stäubli Sargans AG | Drawing-in gripper, drawing-in machine including such a gripper and process for drawing-in warp yarns on such a drawing-in machine |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH682676A5 (en) * | 1991-01-10 | 1993-10-29 | Zellweger Uster Ag | Thread monitor. |
CH687714A5 (en) * | 1993-09-13 | 1997-01-31 | Stsubli Ag Zweigwerk Sargans | Device for handling Stripes for Kettfadeneinziehmaschinen. |
US6554930B1 (en) | 1998-12-22 | 2003-04-29 | The Goodyear Tire & Rubber Company | Method and apparatus for connecting cords/filaments |
AU1944199A (en) * | 1998-12-22 | 2000-07-12 | Goodyear Tire And Rubber Company, The | Method and apparatus for connecting cords/filaments |
CN106012252B (en) * | 2016-07-29 | 2017-10-03 | 江阴市通源纺机有限公司 | Automatic arrow band is gaited mechanism |
CN117144537B (en) * | 2023-10-31 | 2023-12-29 | 江苏环鼎纺织科技有限公司 | Drafting device and method for fabric |
CN117568991B (en) * | 2024-01-15 | 2024-04-26 | 江苏永固纳米科技有限公司 | Automatic assembly equipment for heald |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH418252A (en) * | 1964-12-18 | 1966-07-31 | Zellweger Uster Ag | Device for holding the ends of drawn-in warp threads in warp thread drawing machines |
CH479735A (en) * | 1968-12-20 | 1969-10-15 | Zellweger Uster Ag | Warp drawing-in machine |
DK127013B (en) * | 1971-06-17 | 1973-09-10 | Titan Textile Machines As | Apparatus for individually separating lids or slats from a series of lids or slats. |
US3787938A (en) * | 1972-06-12 | 1974-01-29 | Barber Colman Co | Method and apparatus for drawing in warp threads |
JPS5135757A (en) * | 1974-09-18 | 1976-03-26 | Dornier Gmbh Lindauer | |
DE2902729C2 (en) * | 1979-01-25 | 1982-04-01 | Lindauer Dornier Gmbh, 8990 Lindau | Weft insertion element for shuttleless looms |
DE3210921C1 (en) * | 1982-03-25 | 1983-09-29 | Lindauer Dornier Gmbh, 8990 Lindau | Device for pulling warp threads into provided healds and slats |
CH663040A5 (en) * | 1984-06-18 | 1987-11-13 | Bopp & Co Ag G | MACHINE FOR INPUTING CHAIN THREADS INTO A WEB COMB. |
DE3527202C1 (en) * | 1985-07-30 | 1986-10-09 | Lindauer Dornier Gmbh, 8990 Lindau | Gripper bar for contactless weaving machines |
US4894893A (en) * | 1987-06-11 | 1990-01-23 | C K D Kabushiki Kaisha | Pneumatic reed drawing-in apparatus |
EP0295806B1 (en) * | 1987-06-18 | 1992-09-09 | TEIJIN SEIKI CO. Ltd. | Warp-drawing apparatus |
JPS6440641A (en) * | 1987-08-04 | 1989-02-10 | Nishiki Kk | Automatic warp yarn passing apparatus |
DE59006017D1 (en) * | 1989-10-03 | 1994-07-14 | Rueti Ag Maschf | Method and device for drawing a warp thread into fabric-forming parts of a weaving machine. |
JPH0737697B2 (en) * | 1989-11-24 | 1995-04-26 | シーケーディ株式会社 | Thread pulling head for drawing device |
-
1989
- 1989-12-22 CH CH4598/89A patent/CH679598A5/de not_active IP Right Cessation
-
1990
- 1990-12-06 JP JP3500039A patent/JP2913422B2/en not_active Expired - Fee Related
- 1990-12-06 AU AU67423/90A patent/AU6742390A/en not_active Abandoned
- 1990-12-06 DK DK90917134.0T patent/DK0460129T3/en not_active Application Discontinuation
- 1990-12-06 ES ES90917134T patent/ES2073590T3/en not_active Expired - Lifetime
- 1990-12-06 DE DE59009349T patent/DE59009349D1/en not_active Expired - Fee Related
- 1990-12-06 EP EP90917134A patent/EP0460129B1/en not_active Expired - Lifetime
- 1990-12-06 WO PCT/CH1990/000283 patent/WO1991010003A1/en active IP Right Grant
- 1990-12-06 CA CA002045565A patent/CA2045565A1/en not_active Abandoned
- 1990-12-06 US US07/741,531 patent/US5249339A/en not_active Expired - Lifetime
- 1990-12-06 KR KR1019910700761A patent/KR0140862B1/en not_active IP Right Cessation
- 1990-12-06 AT AT90917134T patent/ATE124477T1/en not_active IP Right Cessation
- 1990-12-20 CZ CS906470A patent/CZ283051B6/en not_active IP Right Cessation
- 1990-12-21 PT PT96340A patent/PT96340A/en not_active Application Discontinuation
-
1991
- 1991-08-21 RU SU915001830A patent/RU2028394C1/en active
Non-Patent Citations (1)
Title |
---|
See references of WO9110003A1 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5909750A (en) * | 1997-06-12 | 1999-06-08 | Sanders; Falk-Hayo | Multiple stage device and method for manufacturing a woven fabric |
EP2147992A1 (en) | 2008-07-25 | 2010-01-27 | Stäubli AG Pfäffikon | Threading machine and method for threading warp yarns in elements of a weaving machine |
EP2199443A1 (en) | 2008-12-19 | 2010-06-23 | Stäubli AG Pfäffikon | Mobile drawing-in unit |
WO2010069086A1 (en) | 2008-12-19 | 2010-06-24 | Stäubli Ag Pfäffikon | Mobile threading unit |
EP3772549A1 (en) | 2019-08-05 | 2021-02-10 | Stäubli Sargans AG | Drawing-in gripper, drawing-in machine including such a gripper and process for drawing-in warp yarns on such a drawing-in machine |
Also Published As
Publication number | Publication date |
---|---|
JP2913422B2 (en) | 1999-06-28 |
AU6742390A (en) | 1991-07-24 |
PT96340A (en) | 1992-08-31 |
WO1991010003A1 (en) | 1991-07-11 |
US5249339A (en) | 1993-10-05 |
RU2028394C1 (en) | 1995-02-09 |
KR920701550A (en) | 1992-08-12 |
DE59009349D1 (en) | 1995-08-03 |
ES2073590T3 (en) | 1995-08-16 |
DK0460129T3 (en) | 1995-11-13 |
JPH04505352A (en) | 1992-09-17 |
CA2045565A1 (en) | 1991-06-23 |
ATE124477T1 (en) | 1995-07-15 |
CH679598A5 (en) | 1992-03-13 |
CS647090A3 (en) | 1992-04-15 |
CZ283051B6 (en) | 1997-12-17 |
EP0460129B1 (en) | 1995-06-28 |
KR0140862B1 (en) | 1998-07-01 |
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