WO2003014448A1 - Fadenselektor - Google Patents
Fadenselektor Download PDFInfo
- Publication number
- WO2003014448A1 WO2003014448A1 PCT/EP2002/007972 EP0207972W WO03014448A1 WO 2003014448 A1 WO2003014448 A1 WO 2003014448A1 EP 0207972 W EP0207972 W EP 0207972W WO 03014448 A1 WO03014448 A1 WO 03014448A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nozzle
- valve housing
- holder
- leg
- thread selector
- Prior art date
Links
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
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/32—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by liquid jet
-
- 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
- D03D47/38—Weft pattern mechanisms
Definitions
- the invention relates to a thread selector specified in the preamble of claim 1.
- each nozzle it is extremely important to arrange each nozzle as precisely as possible in a certain position and with a certain jet angle relative to the open shed, the adjustment of the nozzle not only depending on the weaving width, but also on the thread quality and the water pressure.
- the nozzle outlets are usually roughly side by side, i.e. one nozzle is closer to the weaving edge where the weft thread is attached than the other. This also requires an individual adjustment of the nozzles in order to achieve an optimal trajectory for each weft thread.
- both nozzles are arranged parallel to one another in a common housing.
- the housing is connected to the water supply.
- the nozzle spindle of each nozzle is linearly pushed back and forth in the longitudinal direction of the nozzle between an open and jet-shaping position and a closed shut-off position.
- a mechanism supported in the housing is provided for alternately adjusting the nozzle spindles.
- the invention has for its object to provide a compact thread selector for high jet quality, which allows sensitive adjustment of the nozzle position and direction.
- the flow path between the valve seat and the nozzle is so short that even during long pauses in the shot there are no air pockets that impair the jet quality at least the next time the shot is fired.
- the omission of a separate housing for the nozzle results in a compact thread selector, which takes up little installation space in the cramped installation conditions.
- the thread selector is structurally simple because the insertion of the nozzle into the material of the valve housing does not create any manufacturing problems and no separate piping is required between the solenoid valve and the nozzle. Proven and commercially available components can be used.
- the closing element has no influence on the thread guidance through the nozzle. Since the valve housing with the integrated nozzle is mounted on the holder using the setting device, the position and angular position of each nozzle can be individually and precisely adjusted.
- nozzle Compact dimensions are achieved when the nozzle is seated in a passage of the valve housing which is approximately perpendicular to the actuating axis of the switching magnet and the closing element. Short flow paths are created for the water flow.
- the nozzle is expediently a commercially available standard component that is screwed into the passage designed as a threaded bore and is already equipped with the valve spindle.
- the passage in which the nozzle is located in the valve housing should directly adjoin the valve seat. This measure avoids dead space for air pockets.
- each valve housing In order to be able to optimally position each nozzle individually and independently of each additional nozzle and to be able to adjust it in the angular position, each valve housing should be mounted on the holder with its own adjustment device.
- a common holder is expediently used for all the nozzles provided.
- An L-shaped shape of the valve housing is compact.
- the upper L-leg of the block is used to fix it to the holder.
- the lower leg contains the nozzle and the active valve components as well as flow paths.
- the lower L-leg should be approximately the thickness of the regulating element lower than the upper L-leg, and should protrude above it.
- the switching magnet should be mounted on the side of the valve housing, while the passage for the nozzle is positioned as close as possible and perpendicular to the receiving opening in the other end of the lower L-leg to achieve an optimal working position of the nozzle.
- the individual and sensitive angle adjustment of the nozzle is carried out by means of a ball joint, which is provided between the valve housing and the regulating element.
- a joint ball is clamped in the connection area between the valve housing and the regulating element, which is expediently seated in ball sockets.
- the holder is U-shaped or designed as an open rectangular frame.
- the holder can be conveniently attached to the jet weaving machine, e.g. on a support.
- the two valve housings for two nozzles face each other with the free ends of their lower L-legs.
- the nozzles are optimally positioned close to each other, e.g. only about 5 to 10 mm apart, and the switching magnets are on the outside in positions where their electrical control lines can be easily laid.
- FIG. 3 is a perspective view of a training detail
- Fig. 4 is a schematic sectional view of a valve housing of the thread selector.
- a thread selector S in FIGS. 1 and 2 is intended for installation in a water jet weaving machine (not shown) which works according to a mixed change weaving method with at least two channels K1, K2. This means that weft threads of the same or different qualities or the same or different colors or length weights are alternately shot into the opened shed with a water jet.
- the shot is carried out by means of a nozzle N which is directed to a not shown Water pressure source is connected. When the nozzle N of a channel is operating, every other nozzle N has a shot pause.
- Each nozzle N is in a passage 7 of a valve housing 1, 2, e.g. by screwing, assembled.
- the valve housing 1, 2 is an L-shaped block with an upper L-leg L1 and a lower L-leg L2, the valve housings 1, 2 for the channels K1, K2 being mirror-symmetrical to one another.
- the two housings 1, 2 are mounted via adjusting devices V with regulating elements 3, 4 on a holder 5 common here to two nozzles N.
- the angular position of each nozzle N with respect to the holder 5 is individually adjustable, as is at least the height position of each nozzle N.
- the passage 7 passes through the lower L-leg L2 near its free end.
- a receiving opening 18 is formed in the lower L-leg L2 from the opposite end, which leads (FIG. 4) to a valve seat 34 in a flow path from a water supply W on the underside of the lower L-leg L2 to the passage 7 ,
- a closing element 6 works together with the valve seat 34 in order to open or shut off the flow path to the nozzle N. This structure will be explained in detail later with reference to FIG. 4.
- the closing element 6 is contained in a body 22 of a switching magnet M as an actuator of the closing element 6 and protrudes from a threaded connector with a turning aid 20 (e.g. a hexagon) and a seal 21.
- the switching magnet M is actuated via a control line 23 and is held on the valve housing 1, 2 by screwing it into the receiving opening 18.
- the lower L-leg L2 of the housing 1, 2 is lower than the upper L-leg L1 relative to the upper L-leg L1 in the direction of the holder 5. It protrudes like a pedestal.
- the corners of a square-defining threaded bores 8 are formed, which are used for screwing in clamping screws 9 of the regulating element 3, 4.
- a ball joint 10 is provided between the regulating element 3, 4 and the housing 1, 2 and is surrounded by the tensioning screws 9.
- the ball joint 10 comprises a joint ball 26 which is in ball sockets 27 of the lierelements 3, 4 and the upper L-leg L1 sits in the middle of the square defined by the clamping screws 9.
- the clamping screws 9 pass through bores 25 in the regulating element 3, 4.
- the regulating element is in the form of a plate with a rounded underside and has an elongated hole 11 which runs in the mounting position in the vertical direction of the upper L-leg L1.
- a clamping screw 12 is inserted through the elongated hole 11, which is screwed into a threaded bore 16 in a seat 17 of a web 13 of the holder 5, and the regulating element 3, 4, the height position of which can be adjusted relative to the web 13 by means of the elongated hole 11, on the holder 5 set.
- the holder 5 is U-shaped and open, with the web 13, an essentially parallel lower web 14, and a web 15 connecting these two webs.
- the web 13 is to the left in FIG. 1 compared to the webs 15, 14 cranked so that the housings 1, 2 and the switching magnets M in the mounted position (FIG. 2) as little as possible relative to the holder 5.
- the holder 15 could also be designed as an open square frame with a second connecting web such as the web 15 (not shown) ).
- an elongated hole 24 extending in the longitudinal direction of the web is expediently provided, with the aid of which the thread selector S can be mounted on a support in the water jet weaving machine, the elongated hole 24 enabling transverse adjustment, so that the nozzle positions can be precisely adjusted using the elongated holes 11 and 24 are.
- the angular position of each nozzle N is set by means of the ball joint 10 by screwing the clamping screws 9 into the threaded bores 8 to different degrees in order to tilt the valve housing 1, 2 relative to the regulating element 3, 4 in any desired direction.
- Fig. 2 the thread selector S is fully assembled for installation in the water jet loom. Its dimensions, particularly in the direction of the nozzles N, are compact. The nozzles N are close together, e.g. with a distance of approx. 5 to 10 mm to enable a favorable shot geometry.
- the water supply W (a screw nipple) in one of the bottom of the lower L-leg L2 drilled threaded bore 29 which is extended by an inlet channel 28.
- the receiving opening 18 drilled from the left end of the lower L-leg L2 has an internal thread 30 over part of its longitudinal extent and cuts the inlet channel 28 approximately vertically.
- the receiving opening 18 is extended in its axial direction by a feed channel 35, which meets the passage 7, and forms the valve seat 34 for the closing element 6 by means of a bore widening.
- the closing element 6 has a shaft 31 connected to the armature of the switching magnet M (not shown) and a valve plate 32 formed thereon.
- An elastic sealing plate 33 can be attached to the valve plate 32, facing the valve seat 34.
- the actuating axis X of the switching magnet M and the closing element 6 is aligned with the axis of the feed channel 35.
- the closing element 6 is sealed from the inside of the switching magnet M by a sealing arrangement, not shown.
- a spring not shown, is provided, which acts on the closing element either in the lifting direction from the valve seat 34 or in the mounting direction to the valve seat 34, while the switching magnet M acts when excited in the direction opposite to the spring force.
- the feed channel 35 is shown as a finite bore section. It is expedient to place the valve seat 34 as close as possible to the passage 7 in order to minimize the dead space for possible air inclusions during a pause in firing.
- the passage 7 is located as close as possible to the right end of the lower L-leg L2 in order to position the nozzles N as close as possible to one another in the mounting position in FIG. 2.
- the threaded bores 8 are indicated as part of the adjustment device V.
- the other valve housing 2 is a mirror image of the valve housing 1.
- the closing element 6 In the mounting position in FIG. 1, the closing element 6 is lifted off the valve seat 34 when the nozzle N is acted on in the passage 7, so that a flow connection between the inlet channel 28 and the supply channel 35 is released. In the event of a pause in firing for the nozzle, the closing element 6 is pressed onto the valve seat 34 in order to shut off the flow connection.
- the respective nozzle N is a commercially available standard component, which is fixed with front and rear sealing areas or thread areas in internal threads 36 of the passage 7 and in between has a constriction, so that water entering through the feed channel 35 is guided into the interior of the nozzle N and there generates the jet directed into the shed of the water jet loom with a valve spindle (not shown). The weft thread is passed through the spindle and carried along by the jet.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10135446.0 | 2001-07-20 | ||
DE2001135446 DE10135446A1 (de) | 2001-07-20 | 2001-07-20 | Fadenselektor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003014448A1 true WO2003014448A1 (de) | 2003-02-20 |
Family
ID=7692530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/007972 WO2003014448A1 (de) | 2001-07-20 | 2002-07-17 | Fadenselektor |
Country Status (3)
Country | Link |
---|---|
CN (1) | CN1533454A (de) |
DE (1) | DE10135446A1 (de) |
WO (1) | WO2003014448A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502005010656D1 (de) * | 2005-11-25 | 2011-01-20 | Itema Switzerland Ltd | Vorrichtung und Verfahren zum Eintragen von Schussfäden |
US7748414B2 (en) | 2006-12-12 | 2010-07-06 | Itema (Switzerland) Ltd | Method and apparatus for the insertion of weft threads |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01168941A (ja) * | 1987-12-23 | 1989-07-04 | Nissan Motor Co Ltd | 水噴射式織機の複数緯糸選択緯入れ装置 |
US5462095A (en) * | 1993-02-08 | 1995-10-31 | Hokuriku Seikei Industrial Co., Ltd. | Picking device with selected spools for a water-jet loom |
JPH08260291A (ja) * | 1995-03-29 | 1996-10-08 | Nissan Tecsys Kk | 流体噴射式織機の緯糸保持装置 |
JP2001131848A (ja) * | 1999-11-01 | 2001-05-15 | Tsudakoma Corp | 流体噴射式織機の多色緯入れノズル装置 |
-
2001
- 2001-07-20 DE DE2001135446 patent/DE10135446A1/de not_active Withdrawn
-
2002
- 2002-07-17 WO PCT/EP2002/007972 patent/WO2003014448A1/de not_active Application Discontinuation
- 2002-07-17 CN CNA028145631A patent/CN1533454A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01168941A (ja) * | 1987-12-23 | 1989-07-04 | Nissan Motor Co Ltd | 水噴射式織機の複数緯糸選択緯入れ装置 |
US5462095A (en) * | 1993-02-08 | 1995-10-31 | Hokuriku Seikei Industrial Co., Ltd. | Picking device with selected spools for a water-jet loom |
JPH08260291A (ja) * | 1995-03-29 | 1996-10-08 | Nissan Tecsys Kk | 流体噴射式織機の緯糸保持装置 |
JP2001131848A (ja) * | 1999-11-01 | 2001-05-15 | Tsudakoma Corp | 流体噴射式織機の多色緯入れノズル装置 |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 013, no. 442 (C - 641) 3 October 1989 (1989-10-03) * |
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 02 28 February 1997 (1997-02-28) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 22 9 March 2001 (2001-03-09) * |
Also Published As
Publication number | Publication date |
---|---|
CN1533454A (zh) | 2004-09-29 |
DE10135446A1 (de) | 2003-02-06 |
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