EP0828884B1 - Elektrostatischer schussfadenwächter für eine reihenfachwebmaschine - Google Patents
Elektrostatischer schussfadenwächter für eine reihenfachwebmaschine Download PDFInfo
- Publication number
- EP0828884B1 EP0828884B1 EP96909002A EP96909002A EP0828884B1 EP 0828884 B1 EP0828884 B1 EP 0828884B1 EP 96909002 A EP96909002 A EP 96909002A EP 96909002 A EP96909002 A EP 96909002A EP 0828884 B1 EP0828884 B1 EP 0828884B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weft thread
- weft
- accordance
- rotation
- thread monitor
- 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
- 238000009941 weaving Methods 0.000 claims description 45
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims 14
- 239000004020 conductor Substances 0.000 description 7
- 239000004744 fabric Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/18—Automatic stop motions
- D03D51/34—Weft stop motions
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
- D03D41/005—Linear-shed multiphase looms
Definitions
- the invention relates to an electrostatic Weft monitor according to the preamble of claim 1.
- the invention further relates to a series shed weaving machine with the weft monitor according to the invention.
- the invention further relates to a method for monitoring a weft insertion with an electrostatic Weft guard.
- EP 0 514 320 A1 describes an electrostatic one Weft monitor known. Such a sensor is suitable yourself to monitor one in a one-dimensional Direction of weft. Such one electrostatic weft monitor detects the Passage of a weft tip or the presence a weft thread, the weft thread in each case is electrostatically charged.
- a disadvantage of this known embodiment is there too see that the weft monitor is only suitable one moving in a one-dimensional direction Detect weft. Once there is a weft is simultaneously moving in an additional direction the weft thread can no longer be clearly detected.
- the invention has for its object a propose non-contact weft guard who the overcomes disadvantages mentioned.
- the weft monitor according to the invention is suitable for Row shed weaving machines for monitoring a Weft entry in a row shed weaving machine.
- Row shed looms have a cylindrical rotor on the surface of which are subject-forming elements are arranged to a shed in the warp threads generate a weft with the support of a Fluids moving in the longitudinal direction of the rotor Webfach is entered.
- the rotor also rotates around it Axis of rotation, so that the weft thread and one in a linear movement in the direction of entry Rotational movement around the center of the axis of rotation executes.
- An advantage of the weft monitor according to the invention can be seen in the fact that the weft thread during a longer section of the web rotor can be monitored.
- sensors based on the electrostatic measuring principle or an optical Measuring principle would be to monitor one in more than one Dimension moving weft a plurality of Sensors required.
- An advantage of the invention Weft monitor can therefore be seen in that for Monitoring a single sensor is sufficient.
- Fig. 1 shows a perspective, highly simplified View of a row shed weaving machine 1, which one Has roller-shaped weaving rotor 3, with a Axis of rotation 3a and a direction of rotation 3b.
- the weaving rotor 3 At the cylindrical surface of the weaving rotor 3 are not Shown technical training organs arranged, which the warp threads 7a, 7b looping around the weaving rotor 3 in a Bring a high position or a low position and thereby open a shed through which Weft threads, 4a, 4b, 4c, 4d, can be entered in such a way that a fabric 7 is formed.
- the weft threads 4a, 4b, 4c, 4d are subtracted from a weft supply 4 and over Funded a fluid nozzle 5, which the Weft threads through or embedded in the weaving rotor 3 Shed insertion channels 6 promotes.
- the row shed weaving machine shown shows this Characteristic on that at the same time four weft threads 4a, 4b, 4c, 4d through weft insertion channels into the open web subjects can be entered.
- the weft insertion channels run parallel to the Rotation axis 3a of the weaving rotor 3.
- weaving rotor 3 runs in the direction of rotation 3b Rotation so that the inserted weft threads 4a, 4b, 4c, 4d along with a translation movement parallel to Axis of rotation 3a also a rotational movement in Execute direction of rotation 3b towards fabric 7.
- the weft insertion side is on the end face of the weaving rotor 3 an electrostatic weft monitor 2 with a Fastening part 2a and electrical conductors 2b, 2c arranged.
- On the opposite face of the Web rotor 3 is also a related to that Weft monitor 2 in direction of rotation 3b Angle amount ⁇ offset weft monitor 20 arranged.
- This weft monitor has a U-shape configured scanning electrode with a base part 2d and two leg parts 2e, 2f. Further points out Weft monitor a fastening part 2a as well electrical conductors 2b, 2c.
- the Weft monitor 2 is a plan view of the end face of the weft entry end of the web rotor 3 with Axis of rotation 3a and direction of rotation 3b shown.
- the Weft monitor 2 has one inside Dashed scanning electrode 9, which Is U-shaped and a base part 9d and two Has leg parts 9e, 9f.
- the trajectory is 8 of the moving in the direction of rotation 3b Weft thread 4a shown.
- the scanning electrode 9 is in the form of an open loop configured, the loop of the base part 9d and the two leg parts 9e, 9f, and the Leg parts 9e, 9f are longer than that Base part 9d, so that there is a U-shaped or V-shaped configured scanning electrode 9 results.
- the Weft monitor 2 is advantageously such arranged with respect to the weaving rotor 3 that the Weft tip of a newly registered weft 4d the U-shaped recess of the scanning electrode in the area of the base part 9d happens so that the weft 4d during a rotation of the weaving rotor 3 by an angle ⁇ still in the space of the U-shaped Scanning electrode 9 remains.
- the weft monitor 2 is thus able to insert the weft 4d over to monitor a rotation angle ⁇ of the weaving rotor 3.
- the scanning electrode 9 is in a variety of Customizable options.
- 2 shows a layered or plate-shaped scanning electrode 9, wherein in section along the line A-A a section through the right leg part 9e is shown, which one has a layered structure with two metallic, flat outer layers 2g, in between an electrical Insulating agent 2h, in which the electrically conductive Leg part 9e is embedded.
- the leg part 9e can also, as shown in Fig. 4b, be arranged such that it is open on a side facing the weft lies, therefore not surrounded by an insulating agent 2h is, or that with the leg part 9e a protruding metallic part 2i is connected to the electrostatic charge of a weft thread better to capture.
- the weft thread detector 2 according to FIG. 2 has one electronic circuit 10, which at least one Amplifier comprises, the scanning electrode 9 over an electrical conductor 2b with the electronic Circuit 10 is connected, and being two electrical Conductor 2c from the electronic circuit 10 to the outside lead to a downstream Signal
- the electrostatic weft monitor 2 with fastener 2a and electrical conductor 2c again has one in the form of an open loop configured scanning electrode 9, which is a base part 9d and two leg parts 9e, 9f, the Leg parts 9e, 9f are longer than that Base part 9d, and wherein the scanning electrode 9 is U-shaped or is V-shaped.
- the electrostatic Weft monitor 2 is like this on the weft arrival side arranged with respect to the weaving rotor 3 that the Weft thread tip of a weft thread 4d in the area of the base part 9d by the of the Tracing electrode 9 trained, open in the direction of rotation Noose moves so that the weft 4d in turn during a rotation angle ⁇ of the weaving rotor 3 from the Scanning electrode 9 of the weft monitor 2 detectable is.
- Fig. 4c shows a section along the line B-B 3 by a leg portion 9e of Scanning electrode 9.
- the scanning electrode 9 as a circular conductor designed in an electrically insulating means 2h, for example a plastic, is arranged.
- the two leg parts 9e, 9f of the scanning electrode 9 are preferably designed such that the two Leg parts 9e, 9f have the same curvature have, so that the course of the leg parts 9e, 9f the curved path 8 of the weft thread is adapted.
- the Leg parts 9e, 9f can be designed such that they have a common center of curvature 3a have, which preferably also with the center of rotation the axis of rotation 3a coincides.
- the scanning electrode 9 with leg parts 9e, 9f is preferably such arranged with respect to the weaving rotor 3 that the two Leg parts 9e, 9f perpendicular to the course of the Axis of rotation 3a or perpendicular to The weft insertion direction of a weft thread 4a runs.
- the weft monitor 2 is in relation to a weaving rotor preferably arranged such that the two Leg parts 9e, 9f, starting from the base part 9d, in Direction of rotation 3b of the weaving rotor arranged to run are.
- the electrostatic weft monitor with Scanning electrode 9 is on the front side of the weaving rotor 3, to be arranged on the weft insertion side or weft discharge side.
- the weft monitor 2 can also be in the range of roller-shaped weaving rotor arranged on its surface to be a weft within the passage in the Detect web rotor.
- a weft thread is in one Weft insertion direction and in a transverse or vertically moving direction, being a Weft monitor with an open one Loop-shaped scanning electrode 9 is used and the weft thread covering at least part of the transverse trajectory within the open loop of the scanning electrode 9 moved continuously becomes. This makes it possible to create a weft thread, which one movement in the weft insertion direction performs additional movement in a further direction clearly monitor and detect.
- FIG. 5a shows a further exemplary embodiment of a Weft monitor 2.
- the weft monitor 2 points at least one, elongated, in Direction of rotation 3b extending scanning electrode 9e, 9f on.
- the Weft monitor 2 in the form of an open loop designed end part 2i, which two in Direction of rotation 3b extending leg parts 2e, 2f and includes a base part 2d.
- a scanning electrode 9e, 9f is arranged, which individually via a metallic conductor 2b with a electronic amplifier circuit 10 are connected, so that a difference signal between the two in the Scanning electrodes 9e, 9f evaluated signals occurring becomes.
- the weft monitor 2 according to FIG.
- 5a can also be designed such that it is only an internal one or external scanning electrode 9e, 9f, whose signal to the electronic amplifier circuit 10 to be led.
- 5b shows a corresponding one Embodiment with a single, to the center of rotation of the weaving rotor arranged scanning electrode 9f. Further it is possible that the weft guard 2 two Has scanning electrodes 9e, 9f, one of the two Scanning electrodes 9e, 9f grounded respectively is electrically connected to ground.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Description
- Fig. 1
- eine perspektivische Ansicht einer Reihenfachwebmaschine mit elektrostatischen Sensoren;
- Fig. 2
- eine schusseintragsseitige Aufsicht auf den Webrotor mit einem Schussfadenwächter;
- Fig. 3
- eine schussankunftsseitige Aufsicht auf den Webrotor mit einem Schussfadenwächter;
- Fig. 4a, 4b, 4c
- Schnitte durch verschiedene Ausführungsformen von elektrostatischen Sensoren;
- Fig. 5a, 5b
- eine Aufsicht auf weitere Ausführungsbeispiele eines Schussfadenwächters.
Claims (16)
- Elektrostatischer Schussfadenwächter (2), angeordnet an einem Webrotor (3), für eine Reihenfachwebmaschine, welche einen in einer Rotationsrichtung (3b) drehbaren Webrotor (3) ausweist, dadurch gekennzeichnet, dass der Schussfadenwächter (2) eine länglich ausgestaltete, in Rotationsrichtung (3b) verlaufende Abtastelektrode (9;9e;9f) aufweist, wobei der Schussfadenwächter (2) derart bezüglich des Webrotors (3) angeordnet ist, dass sich ein Schussfaden zumindest über einem Teil seiner Bewegungsbahn in Verlaufsrichtung der Abtastelektrode (9; 9e; 9f) bewegt.
- Elektrostatischer Schussfadenwächter (2) nach Anspruch 1, dadurch gekennzeichnet, dass der Schussfadenwächter (2) ein in Form einer offenen Schlinge ausgestaltetes Endteil (2i) aufweist, welches zwei in Rotationsrichtung (3b) verlaufende Schenkelteile (2e, 2f) sowie ein Basisteil (2d) umfasst, wobei zumindest in einem der Schenkelteile (2e, 2f) eine Abtastelektrode (9e, 9f) angeordnet ist.
- Elektrostatischer Schussfadenwächter (2) nach Anspruch 2, dadurch gekennzeichnet, dass in jedem der beiden Schenkelteile (2e, 2f) eine Abtastelektrode (9e, 9f) angeordnet ist, und dass eine der Abtastelektroden (9e, 9f) geerdet ist.
- Elektrostatischer Schussfadenwächter (2) nach Anspruch 2, dadurch gekennzeichnet, dass die Abtastelektrode (9) in Form einer offenen Schlinge ausgestaltet ist, wobei die Schlinge aus einem Basisteil (9d) und den beiden Schenkelteilen (9e, 9f) besteht, und wobei die Schenkelteile (9e,9f) länger ausgestaltet sind als das Basisteil (9d).
- Elektrostatischer Schussfadenwächter nach Anspruch 4, dadurch gekennzeichnet, dass die Abtastelektrode (9) U-förmig oder V-förmig ausgestaltet ist.
- Elektrostatischer Schussfadenwächter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Abtastelektroden (9e, 9f) eine gleich gerichtete Krümmung aufweisen.
- Elektrostatischer Schussfadenwächter nach Anspruch 6, dadurch gekennzeichnet, dass die Abtastelektroden (9e, 9f) einen gemeinsamen Krümmungsmittelpunkt (3a) aufweisen.
- Elektrostatischer Schussfadenwächter nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Abtastelektroden (9e, 9f) senkrecht oder quer zu einer Schusseintragsrichtung eines Schussfaden (4a, 4b, 4c, 4d) verlaufend ausgerichtet sind.
- Reihenfachwebmaschine (1) mit einem elektrostatischen Schussfadenwächter (2) nach einem der Ansprüche 1 bis 8.
- Reihenfachwebmaschine (1) nach Anspruch 9, dadurch gekennzeichnet, dass der Schussfadenwächter (2) derart bezüglich dem Webrotor (3) angeordnet ist, dass die beiden Schenkelteile (2e, 2f) ausgehend vom Basisteil (2d) in Rotationsrichtung (3b) des Webrotors (3) verlaufend angeordnet sind.
- Reihenfachwebmaschine (1) nach Anspruch 10, dadurch gekennzeichnet, dass der gemeinsame Krümmungsmittelpunkt der Schenkelteile (2e, 2f) und/oder der Abtastelektroden (9e, 9f) mit der Rotationsachse (3a) des Webrotors (3) zusammenfällt.
- Reihenfachwebmaschine (1) nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, dass die Abtastelektrode (9; 9e; 9f) stirnseitig zum Webrotor (3) und/oder relativ zur Oberfläche des walzenförmigen Webrotors (3) angeordnet ist.
- Reihenfachwebmaschine nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet, dass mindestens zwei Schussfadenwächter (2, 20) in Verlaufsrichtung der Rotationsachse (3a) beabstandet angeordnet sind.
- Reihenfachwebmaschine nach Anspruch 13, dadurch gekennzeichnet, dass der schusseintragsseitige Schussfadenwächter (2) bezüglich weiteren Schussfadenwächtern (20) in Drehrichtung (3b) um einen Winkelbetrag β versetzt angeordnet ist.
- Reihenfachwebmaschine nach Anspruch 14 mit in Rotationsrichtung um einen Winkel α versetzten Schusseintragskanälen, dadurch gekennzeichnet, dass ein fangseitig angeordneter Schussfadenwächter (20) gegenüber dem schusseintragseitig angeordneten Schussfadenwächter (2) in Drehrichtung (3b) um einen oder ein Vielfaches des Winkelbetrages α versetzt angeordnet ist.
- Verfahren zum Überwachen eines Schussfadeneintrages bei Reihenfachwebmaschinen mit einem in einer Rotationsrichtung (3b) drehbaren Webrotor (3) unter Verwendung eines elektrostatischen Schussfadenwächter, wobei der Schussfaden in einer Schusseintragsrichtung und in einer dazu quer oder senkrecht verlaufenden Richtung bewegt wird, indem ein Schussfadenwächter mit einer länglich ausgestalteten, in Rotationsrichtung verlaufenden Abtastelektrode (9; 9e; 9f) verwendet wird, und indem der Schussfaden zumindest über einem Teil der in Querrichtung verlaufenden Bewegungsbahn in Verlaufsrichtung der Abtastelektrode (9; 9e; 9f) bewegt wird.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH163895 | 1995-06-02 | ||
CH163895 | 1995-06-02 | ||
CH1638/95 | 1995-06-02 | ||
PCT/CH1996/000159 WO1996038617A1 (de) | 1995-06-02 | 1996-04-26 | Elektrostatischer schussfadenwächter für eine reihenfachwebmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0828884A1 EP0828884A1 (de) | 1998-03-18 |
EP0828884B1 true EP0828884B1 (de) | 2000-01-26 |
Family
ID=4215146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96909002A Expired - Lifetime EP0828884B1 (de) | 1995-06-02 | 1996-04-26 | Elektrostatischer schussfadenwächter für eine reihenfachwebmaschine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0828884B1 (de) |
JP (1) | JPH11505896A (de) |
AU (1) | AU5268196A (de) |
DE (1) | DE59604307D1 (de) |
WO (1) | WO1996038617A1 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT8323198V0 (it) * | 1983-10-07 | 1983-10-07 | Minnetti Frederico & C Off | Organo di presa per rocche di filato. |
DE59006059D1 (de) * | 1990-03-08 | 1994-07-14 | Rueti Ag Maschf | Zumessvorrichtung für den Schussfaden einer Webmaschine. |
US5205327A (en) * | 1991-05-15 | 1993-04-27 | Sulzer Brothers Limited | Electrostatic weft detector |
-
1996
- 1996-04-26 JP JP8536067A patent/JPH11505896A/ja active Pending
- 1996-04-26 EP EP96909002A patent/EP0828884B1/de not_active Expired - Lifetime
- 1996-04-26 WO PCT/CH1996/000159 patent/WO1996038617A1/de active IP Right Grant
- 1996-04-26 DE DE59604307T patent/DE59604307D1/de not_active Expired - Fee Related
- 1996-04-26 AU AU52681/96A patent/AU5268196A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE59604307D1 (de) | 2000-03-02 |
AU5268196A (en) | 1996-12-18 |
WO1996038617A1 (de) | 1996-12-05 |
EP0828884A1 (de) | 1998-03-18 |
JPH11505896A (ja) | 1999-05-25 |
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