EP0247967B1 - Schussfadenspeicher für Webmaschine - Google Patents
Schussfadenspeicher für Webmaschine Download PDFInfo
- Publication number
- EP0247967B1 EP0247967B1 EP87810162A EP87810162A EP0247967B1 EP 0247967 B1 EP0247967 B1 EP 0247967B1 EP 87810162 A EP87810162 A EP 87810162A EP 87810162 A EP87810162 A EP 87810162A EP 0247967 B1 EP0247967 B1 EP 0247967B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- storing device
- yarn
- weft
- winding
- 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.)
- Expired - Lifetime
Links
Images
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
- 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
-
- 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 invention relates to a weft storage device for looms, to which thread is fed from a supply spool and from which thread is drawn discontinuously for entry into the shed of a loom, with a stationary drum supported on its outer circumference for receiving a thread supply to be stored and with a the drum circumference rotating winding member with a driving link for the weft.
- such a weft storage device is dealt with as a thread transport and storage device. Its function is limited to providing a sufficient thread supply for the weft thread insertion between the warp threads of a weaving machine, without measuring the weft thread according to the fabric width. Such a memory would not be suitable for use on air jet weaving machines, for example, since the weft thread must have a defined length during the entry in the shed so that an unnecessarily large excess of thread on the catch side of the weaving machine can be avoided after the entry.
- the invention which solves this problem, is characterized in that the driving element can be switched on and off according to a program, whereby it can be moved against the drum from the winding member.
- the driving element can also be arranged several times on the rotating winding element.
- the drum is supported on the outer circumference, for example with magnets or brushes, for example on conical ends of the drum, and at the same time it is secured against rotation.
- the winding element for the weft thread is a constantly rotating ring surrounding the drum circumference, from which at least one driving pin can temporarily engage in a recess in the drum.
- thread guides are arranged in the axis of the drum, which ensure that the thread runs up and down the conical parts of the drum.
- At least one controllable thread holding element is attached to the drum circumference, which contributes to the building up or dismantling of the thread winding on the drum.
- a controllable thread holding element can also be arranged in front of the storage ring.
- the thread holding members in front of and behind the storage ring are simultaneously designed as means for mounting the drum.
- the memory described can be used for example for rapier or air weaving machines. It is suitable for single or multi-shot operation.
- the invention is characterized by a low cost of mechanical means and by the low mass of the driving elements or holding elements for the weft thread to be controlled intermittently.
- the weft store I is usually arranged between the weft bobbin 5 and the loom 4 in looms. It carries the drum bearings 12, 13 and the ring bearing 15 for the winding ring 14 as well as the thread eyelets 6, 7 and the weft thread brakes 2, 3 on a frame 10.
- the drum II for storing the weft thread has a conical front and rear drum part 114, 115 on.
- the drum parts have magnetic inserts 116, 117 in the case of a magnetic drum bearing, which can be arranged distributed around the circumference as shown in FIG. 2 or can be made rotationally symmetrical as in FIG. 2a.
- the winding ring 14 carries one or more winding magnets 141, from which winding pins 142 can be moved into a groove 111 of the drum II according to arrow 142 '.
- a cylindrical portion 112 adjoins the groove 111 for the defined placement of the weft thread with the aid of the winding pin 142. In the thread running direction to the right in FIG. I, this is followed by a recess 113 on the drum circumference, into which a pin 152 can be moved by a magnet 151 according to arrow 152 '.
- the winding magnets 141 and winding pins 142 as well as the magnets 151 and pins 152 can be arranged in any number distributed around the drum circumference.
- the magnets can be excited by the control device 43 via connecting lines, the contact tracks 153 and 154 and the sliding contacts 155 and 156.
- magnetic means for actuating the winding pin 142 or the pin 152 for example, pneumatically operated Actuators are provided.
- a brush can be arranged on the winding ring 14, which lies lightly on the drum circumference and ensures a defined weft thread tension during the thread run. The direction of the thread is indicated by arrow 52.
- the winding ring 14 is a pulley 145 which is driven by a drive belt 144.
- the winding ring 14 is held in the ring bearing 15 via the bearings 157 and 158.
- the drum bearings 12 and 13 act on the magnetic inserts 116 and 117 of the drum II via magnets 121 and 131, respectively. As shown in FIG. 2, the magnets can be arranged partially or distributed over the entire circumference of the drum. The bearing forces come about through opposing magnetic fields of the magnets 131 and 121 and the magnetic inserts 117 and 116. At the same time, the magnets in the arrangement in FIG. 2 can secure the drum against rotation.
- the weft brake 2 is open while the weft brake 3 is closed.
- the winding pin for the weft thread 142 and the pin 152 for holding the thread roll on the drum circumference are in the lower position in engagement with the drum II.
- the brake 3 is opened while the brake 2 is closed.
- the winding magnet 141 and the magnet 151 or the magnets with multiple arrangement keep the pins 142 and 152 withdrawn when the weft is inserted, whereupon the weft thread supply on the storage device can be drawn off through the main nozzle 41 until the weft thread is stretched on a meridian line of the drum II.
- the weft insertion can also be carried out by a gripper member.
- the stored thread winding 51 can also be held on the drum circumference for any length of time, the pins 152 remaining in engagement and the winding pins 142 having to be retracted into the winding ring 14.
- a space-saving disc rotor motor can be arranged around the drum circumference.
- the winding magnets 141 and the magnets 151 for holding the winding can be controlled by means of a weft sensor in connection with the control device 43, which ensures that the weft length stored by the drum II is correctly measured.
- the memory function In multi-shot mode, the memory function must be controlled by the control device 43 with the pattern control of the machine, e.g. can be coordinated via the control of the dobby 42.
- FIG. 3 shows how the weft thread is deposited on the circumference of the drum from the stretched, extended position after engagement of the winding pins 142 or the pins 152.
- the dashed layers of the weft thread 52 represent its position at short time intervals, during which the winding pins 142 or the pin 192 move in the direction of the arrow.
- Fig. 5 shows a simplified version of the weft thread storage with storage of the drum II by brushes 122 and 132 in the drum bearings 12 and 13.
- the weft thread 52 describes a cone during winding or unwinding.
- the recess 113 is designed as a groove in which a brush 118 or webs 119 are embedded. Slipping of individual weft layers into the groove 113 can thus be avoided.
- this design allows a partial positional deviation of the drum, e.g. a twisting around the axis, which can be permitted with robust weft yarns.
- the driving pin 142 is advantageously designed to be elastically resilient, as shown in FIG. 6, so that weft thread tension peaks are avoided when the winding pin 142 takes it suddenly.
- the contact pressure of the drum II on the brush 122 can be set as desired by means of an exchangeable weight 110.
- the vertical mounting of the drum II has the advantage that no significant resistance between the brush 132 and the drum II has to be overcome when storing on the top of the drum.
- the brush 132 is used here only for braking the weft thread when it is pulled off and for centering the drum II.
- the weft thread is deflected by a deflecting element 8 in the direction of the main nozzle 41 when the drum is mounted vertically.
- a magnet 151a for holding the weft thread winding is arranged on the inlet side in front of the winding ring 14 in the weft direction and is switched on after the winding process by pulling the winding pin 142 out of the groove III in FIG. 4 has ended.
- drum bearings 12 and 13 show an arrangement in which the drum II can be alternately pulled into the left and right positions in the drum bearings 12 and 13, for example by ring-shaped magnets 121 and 131.
- the drum bearings 12 and 13 have the same function as the pins 152 and 152a, which are intended to prevent the thread winding 51 from sliding off after the storage process has ended and before being unloaded.
- FIGS. 9a and 9b instead of annular magnets 121 and 131, clamping claws 16 and 17 are arranged in the drum bearings 12, 13, which according to the program can be inserted into grooves 161 and 171 of the drum II, while holding the drum and at the same time Secure the weft thread 52 around the circumference of the drum.
- 9c shows the arrangement of the clamping claws 16 in relation to the drum II in a view in the axial direction.
- the clamping claws can have attached segments as shown in dashed lines in FIG. 9c, with which the drum II can be held over the entire circumference.
- the drum II is preferably made of plastic which is coated with a wear-resistant layer, e.g. Chrome, can be coated.
- a wear-resistant layer e.g. Chrome
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH2103/86A CH670263A5 (zh) | 1986-05-23 | 1986-05-23 | |
CH2103/86 | 1986-05-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0247967A1 EP0247967A1 (de) | 1987-12-02 |
EP0247967B1 true EP0247967B1 (de) | 1990-07-18 |
Family
ID=4225942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87810162A Expired - Lifetime EP0247967B1 (de) | 1986-05-23 | 1987-03-20 | Schussfadenspeicher für Webmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US4744394A (zh) |
EP (1) | EP0247967B1 (zh) |
JP (1) | JPS62282042A (zh) |
CH (1) | CH670263A5 (zh) |
DE (1) | DE3763751D1 (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3628485A1 (de) * | 1986-08-22 | 1988-02-25 | Iro Ab | Geraet zum speichern von garn |
BE905471A (nl) * | 1986-09-23 | 1987-03-23 | Picanol Nv | Werkwijze om bij weefmaschines de lengte van de in de gaap te brengen inslagdraad te regelen en inrichtingen hierbij aangewend. |
IT1237967B (it) * | 1990-02-05 | 1993-06-19 | Roy Electrotex Spa | Alimentatore di trama per telai di tessitura a getto di fluido |
US5343899A (en) * | 1990-03-12 | 1994-09-06 | Iro Ab | Output yarn brake |
US5110061A (en) * | 1990-12-03 | 1992-05-05 | Berry Roger P | Pneumatic reel fiber pay out system |
JP2650816B2 (ja) * | 1992-07-15 | 1997-09-10 | 日立金属株式会社 | 織機用横糸巻取機およびそれに使用されるマグネット部材 |
DE9307967U1 (de) * | 1993-05-26 | 1994-10-06 | Palitex Project-Company GmbH, 47804 Krefeld | Doppeldraht-Zwirnspindel |
DE4324412C2 (de) * | 1993-07-21 | 1998-03-19 | Mayer Textilmaschf | Vorrichtung zur Einstellung der Fadenspannung |
US5546994A (en) * | 1994-10-14 | 1996-08-20 | Sobrevin Societe De Brevets Industriels-Etablissement | Thread storage drum with frustoconical brake strip |
ATE293713T1 (de) * | 2000-10-18 | 2005-05-15 | Iropa Ag | Liefergerät |
US7249725B2 (en) * | 2002-11-22 | 2007-07-31 | Sultex Ag | Thread carrying apparatus and a textile machine, in particular a weaving machine, including a thread carrying apparatus for this kind |
EP2169099A1 (en) * | 2008-09-25 | 2010-03-31 | L.G.L. Electronics S.p.A. | Negative yarn feeder with weft-braking device |
JP5915219B2 (ja) * | 2012-02-07 | 2016-05-11 | 村田機械株式会社 | 糸巻取装置 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH439161A (de) * | 1965-06-25 | 1967-06-30 | Sulzer Ag | Webmaschine mit Schussfadenzwischenspeicher |
US3759455A (en) * | 1972-09-28 | 1973-09-18 | Wesco Industries Corp | Filament feeding and storage device |
US4033384A (en) * | 1974-08-26 | 1977-07-05 | Crompton & Knowles Corporation | Means for and method of supplying weft yarn to an outside filling supply loom |
CH647999A5 (de) * | 1980-06-17 | 1985-02-28 | Rueti Ag Maschf | Fadenliefervorrichtung fuer textilmaschinen und verfahren zum betrieb der fadenliefervorrichtung. |
DE3382053D1 (de) * | 1982-09-30 | 1991-01-17 | Iro Ab | Garnspeicher- und zufuehrvorrichtung. |
CS247380B1 (en) * | 1983-06-15 | 1986-12-18 | Vladimir Svaty | Method and device for weft thread control on non-orthodox weaving machine |
JPS60231848A (ja) * | 1984-04-24 | 1985-11-18 | 津田駒工業株式会社 | よこ糸測長貯留装置 |
DE3516458A1 (de) * | 1985-05-08 | 1986-11-13 | W. Schlafhorst & Co, 4050 Mönchengladbach | Angetriebener fadenspeicher |
-
1986
- 1986-05-23 CH CH2103/86A patent/CH670263A5/de not_active IP Right Cessation
-
1987
- 1987-03-20 EP EP87810162A patent/EP0247967B1/de not_active Expired - Lifetime
- 1987-03-20 DE DE8787810162T patent/DE3763751D1/de not_active Expired - Fee Related
- 1987-05-05 US US07/046,151 patent/US4744394A/en not_active Expired - Fee Related
- 1987-05-22 JP JP62125665A patent/JPS62282042A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE3763751D1 (de) | 1990-08-23 |
US4744394A (en) | 1988-05-17 |
EP0247967A1 (de) | 1987-12-02 |
CH670263A5 (zh) | 1989-05-31 |
JPS62282042A (ja) | 1987-12-07 |
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