EP3268522A1 - Anpassung der gegenseitigen position der latitudinalen teile einer stoffführungsvorrichtung - Google Patents

Anpassung der gegenseitigen position der latitudinalen teile einer stoffführungsvorrichtung

Info

Publication number
EP3268522A1
EP3268522A1 EP16713093.9A EP16713093A EP3268522A1 EP 3268522 A1 EP3268522 A1 EP 3268522A1 EP 16713093 A EP16713093 A EP 16713093A EP 3268522 A1 EP3268522 A1 EP 3268522A1
Authority
EP
European Patent Office
Prior art keywords
bridge
lower bridge
guiding device
upper bridge
fabric guiding
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
Application number
EP16713093.9A
Other languages
English (en)
French (fr)
Other versions
EP3268522B1 (de
Inventor
Koen Bruynoghe
Sander GOETHALS
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.)
Vandewiele NV
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3268522A1 publication Critical patent/EP3268522A1/de
Application granted granted Critical
Publication of EP3268522B1 publication Critical patent/EP3268522B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/16—Double-plush looms, i.e. for weaving two pile fabrics face-to-face
    • D03D39/18—Separating the two plush layers, e.g. by cutting

Definitions

  • the present invention relates, on the one hand, to a fabric guiding device for a face- to-face weaving machine, comprising a cutting knife and an upper bridge and a lower bridge which are positionable at adjustable distances from one another and from the cutting knife by means of drive means.
  • the present invention relates to a method for displacing a lower bridge and/or upper bridge.
  • the present invention further relates to a face-to-face weaving machine provided with a fabric guiding device according to the invention.
  • upper bridge and lower bridge are used to refer to the cross beams which are secured above and underneath the fabric over the weaving width of the machine and which serve to guide the fabrics in the direction of the cutting knife.
  • the space between the upper bridge and the lower bridge is also referred to as the jaw.
  • two fabrics are woven simultaneously, usually one above the other, each of which comprises a base fabric consisting of weft yarns and warp yarns.
  • these base fabrics are connected to one another with the aid of pile warp yarns which move from the bottom base fabric to the top base fabric and vice versa in a pattern-forming manner.
  • the two fabrics (which together form the non-separated face-to-face fabric) are then moved together through the opening formed between the upper bridge and the lower bridge.
  • These two fabrics in the non-separated face-to- face fabric are kept apart over a distance which substantially corresponds to the distance between upper bridge and lower bridge (the jaw height).
  • lancet device comprising elongate metal strips (the lancets).
  • a plurality of lancets extends in the warp direction over the width of the weaving machine into the jaw, between the lower and upper base fabric.
  • the non-separated face-to-face fabric is then supplied to the cutting device which will use a cutting knife to perform a cutting operation, thus forming two fabrics with cut pile.
  • the adjustment of this jaw is a delicate process involving:
  • the cutting device is firstly provided with one or more electronic position sensors emitting a signal which is respectively in relation to the position of the upper bridge and the lower bridge with respect to the cutting knife.
  • the upper bridge and the lower bridge are each provided with adjusting spindles at their ends, which can optionally be driven by an electric motor in order to facilitate the adjustment of the upper bridge and the lower bridge.
  • the object of the present invention is therefore to provide a simplified fabric guiding device for a face-to-face weaving machine, by means of which it is possible to automatically and accurately adjust, on the one hand, both the mutual position of the upper bridge and the lower bridge (jaw height) and, on the other hand, the position with respect to a reference in the weaving machine, for example the cutting position.
  • the cutting position may be defined as the line of successive positions of the tip of the cutting knife during the cutting operation.
  • the movement of a point on the upper surface or lower surface of the cutting knife may be chosen, in which case, furthermore, half the thickness of the cutting knife is taken into account in order to approximate the actual cutting position as accurately as possible
  • a fabric guiding device for a face-to-face weaving machine comprising a cutting knife and an upper bridge and a lower bridge which are positionable at adjustable distances from one another and from the cutting knife by means of drive means, wherein the device comprises coupling means which are switchable between a first position in which the upper bridge and the lower bridge are coupled to one another, as a result of which the upper bridge and the lower bridge are positionable together with the aid of said drive means, and a second position in which the upper bridge and the lower bridge are decoupled from one another so that only the upper bridge or only the lower bridge is positionable with the aid of the drive means.
  • jaw height means the perpendicular distance between the upper bridge and the lower bridge.
  • the coupling means used in the fabric guiding device according to the invention preferably has a defined operative state when it is de-energized, either of the 'normally open' type or the 'normally closed' type.
  • the coupling means preferably comprises spring elements which are energized or de-energized in order to bring about or cancel the coupling.
  • the drive means comprise a first and second drive means, wherein the first drive means is provided at one end of the bridge which is positionable when the coupling means are switched into their second position and wherein the second drive means is provided at the other end of said bridge.
  • the drive means may also comprise a third drive means which is provided in the middle of the lower bridge. In practice, it is easier to place the drive means when they are provided on the lower bridge, as a result of which this lower bridge is directly drivable.
  • the lower bridge is thus positionable in both the first and the second position of the coupling means, and said coupling means are switchable between a first position in which the lower bridge and the upper bridge are coupled to one another, as a result of which they are positionable together, and a second position in which only the lower bridge is positionable.
  • the drive means comprise hydraulic or electric actuators.
  • the drive means comprise one or more screw means which are provided in order to position the upper bridge and the lower bridge with respect to one another and with respect to the cutting knife and the drive means comprise at least one electric motor which is provided in order to rotate the screw means for adjusting the said bridges.
  • An example of a drive means according to the invention is a motor/spindle combination, optionally provided with a gear unit. In a more particular embodiment of the fabric guiding device according to the invention, this comprises one or more position sensors for determining the position of the upper bridge, the lower bridge and the cutting knife.
  • the position sensors are suitable for determining the relative positions of the upper bridge, the lower bridge and the cutting knife.
  • the position sensors are at least provided at both ends of both the lower bridge and the upper bridge. Furthermore, in a preferred embodiment, it is also possible to provide position sensors at both ends at the height of the cutting position. In a more preferred embodiment, one or more position sensors are likewise also provided at (or in the vicinity of) the middle of one of the bridges, for example the lower bridge. This (these) position sensor(s) is (are) particularly suitable for detecting the position of the bridge at the middle, in order to thus check whether or not the bridge has undergone bending. This bending is the result of the own weight of the bridge and/or of the forces exerted by the fabric on the bridge resulting from the yarn tension.
  • the position sensors used in the device are preferably of the following types:
  • contact-based or contactless such as optical (laser) or inductive, for example.
  • the device comprises first clamping means which are provided to release the upper bridge and the lower bridge and secure them in the set position.
  • the device furthermore comprises second clamping means which are provided to release the lower bridge between both ends and secure it again when the desired position has been reached.
  • the second clamping means are particularly suitable as auxiliary means to compensate for the abovementioned bending.
  • first clamping means and/or second clamping means are suitable to be operated manually.
  • first clamping means and/or second clamping means are suitable to be operated automatically.
  • first clamping means and/or second clamping means comprise pneumatic, hydraulic or electric actuators.
  • the first clamping means or the first clamping means and/or second clamping means are provided to connect the upper bridge or the lower bridge, respectively, to the chassis of a weaving machine.
  • the present invention also relates to a face-to-face weaving machine provided with a fabric guiding device according to the invention, as described above.
  • the weaving machine or the fabric guiding device according to the invention can further be provided with means for inputting the desired jaw height and for displaying the positions measured by the position sensors.
  • Another subject of the present invention relates to a method for positioning a lower bridge and/or an upper bridge of a fabric guiding device of a face-to-face weaving machine, wherein the upper bridge and the lower bridge are positionable by means of drive means and wherein the fabric guiding device furthermore comprises coupling means which are switchable between a first and a second position, wherein the coupling means are switched to the first position, in which the lower bridge and the upper bridge are coupled to each other, to position the lower bridge and the upper bridge together, and wherein the coupling means are switched to the second position, in which the lower bridge and the upper bridge are uncoupled from each other, so that only the upper bridge or only the lower bridge is positionable by means of the drive means.
  • the coupling means is switched into the first position first in order to displace both bridges together, and subsequently into the second position in order to move only the upper bridge or only the lower bridge to the desired position.
  • the method according to the present invention is particular suitable for being applied to the fabric guiding device described in this application. More particularly, the method is suitable for being applied to a fabric guiding device comprising: first and second clamping means, a lancet device, etc.
  • a further preferred method according to the invention comprises at least one of the following preparatory steps in a desired change of relative position of the lower bridge and the upper bridge with respect to one another or with respect to a cutting knife:
  • position sensors are provided at least at each of the ends of the upper bridge and the lower bridge;
  • position-adjusting drive means to a level which allows the existing positions to be maintained when the clamping means are released.
  • the method according to the invention comprises at least one of the following steps:
  • At least one position-adjusting drive means in the form of a third drive means, and one or more position sensors are present in the middle of the lower bridge:
  • the method according to the invention further comprises at least one of the steps described below in order to re-prepare the weaving machine for weaving:
  • an analogue method with an embodiment of the fabric guiding device according to the invention in which only the upper bridge is positionable with the coupling means switched into their second position, also forms part of the present invention.
  • This analogue method comprises at least one of the same preparatory steps as in the case of a desired change of relative position of the lower bridge and the upper bridge with respect to one another or with respect to a cutting knife and at least one of the same steps in order to re-prepare the weaving machine for weaving, as described above for the embodiment in which only the lower bridge is positionable with the coupling means switched into their second position.
  • said analogue method according to the invention comprises at least one of the following steps:
  • At least one position-adjusting drive means in the form of a third drive means, and one or more position sensors are present in the middle of the lower bridge:
  • Figure 1 shows a perspective view of a fabric guiding device according to the invention with the lower bridge and the upper bridge in the coupled position;
  • Figure 2 shows a front view of the device illustrated in Figure 1;
  • Figure 3 shows a rear view of the device illustrated in Figure 1;
  • Figure 4 shows a detail view of the area B encircled in Figure 2;
  • Figure 5 shows a detail view of the area C encircled in Figure 3;
  • Figure 6 shows a detail view of the area A encircled in Figure 1.
  • the fabric guiding device (1) for a face-to-face weaving machine according to the present invention and illustrated in Figures 1 to 3 comprises a cutting knife (8) and an upper bridge (2) and a lower bridge (3) which are positionable with the aid of drive means (4a; 4b) at an adjustable distance from one another and from the cutting knife.
  • the cutting knife is movable on a guide which is securely connected to the machine frame.
  • the drive means (4a; 4b) comprise a first (4a) and second (4b) drive means.
  • the drive can be realized electrically (screw spindle + servomotor + gear unit) or hydraulically (hydraulic servo cylinders).
  • the drive means (4a; 4b) are mechanically connected to the ends of the lower bridge (3).
  • the system which guarantees the vertical movement of the lower bridge mainly comprises a mounted screw spindle and a servomotor with a gear unit.
  • the upper bridge (2) does not have its own drive for its positioning. In order to move (position) the upper bridge (2), it can be mechanically connected to the lower bridge (3), in which case both move together.
  • the device (1) comprises coupling means (5) which are switchable between a first position in which the upper bridge (2) and the lower bridge (3) are coupled to one another, as a result of which the upper bridge (2) and the lower bridge (3) are positionable together with the aid of said drive means (4a; 4b), and a second position in which the upper bridge (2) and the lower bridge (3) are decoupled from one another so that only the lower bridge (3) is positionable with the aid of the drive means (4a; 4b).
  • the mechanical connection between the lower bridge (3) and the upper bridge (2) can be engaged or disengaged at any position.
  • the mechanical connection is achieved by an adjustable mechanical locking element or with the aid of a connection based on friction (clamping based on hydraulic machine clamps), optionally combined with said adjustable mechanical locking element.
  • the mechanical locking element can be actuated electrically, hydraulically or pneumatically. For instance, it is possible to first bring the upper bridge (2) into position in order to then disengage the mechanical connection and subsequently to bring the lower bridge (3) into position. Once the set position has been reached, the lower bridge (3) and the upper bridge (2) are secured in this position.
  • the device (1) is provided with first clamping means (6).
  • the device (1) comprises second clamping means (7) which are provided in order to secure the lower bridge (3) between its two ends when the desired position has been reached.
  • This support is passive.
  • passive support is understood to mean that a certain middle position can be guaranteed, but that the support itself cannot change this position. The following text contains an explanation of this passive support.
  • the desired positions of the ends of the lower bridge (3) will also be used as the basis for a desired middle position. The desired middle position will always be in relation to the position of the ends of the lower bridge (3).
  • the system for middle support by means of second clamping means (7) is provided with several second clamping means (7), distributed across the distance between the ends of the lower bridge (3).
  • the middle support is activated when the desired middle position has been reached.
  • the desired middle position of the lower bridge is realized by moving the entire lower bridge upwards/downwards until the desired middle position has been reached. At that point, the middle support is activated and this middle position is thus secured.
  • the system of passive support described above can be expanded, as explained below, to include an 'active' component. 'Active' is used to refer to the fact that the support can not only secure the middle position but that this system is also able to change this position itself independently of the ends of the lower bridge. This expansion does require an additional (third) drive means which is positioned in the vicinity of the middle and which is able to compensate for the bending of the lower bridge in a simple manner.
  • This clamping may be achieved by manually adjustable bolted connections or, alternatively, by means of machine clamps which can be automatically engaged and disengaged.
  • the machine clamps operate on the basis of hydraulic pressure or on the basis of a mechanical spring which can be hydraulically disengaged.
  • the machine clamps move together with the bridges, which is possible owing to the fact that grooves are present in the supports and because the clamps can assume different positions on the bridges.
  • the bridges are clamped during the operation of the machine; the clamps are only released in order to carry out positioning.
  • the load on the system for positioning can be reduced by reducing the tension on the yarns during the positioning of the upper bridge and/or the lower bridge and/or by adjusting the angle of the yarn with the horizontal plane.
  • the machine control unit Prior to the positioning, the machine control unit will lower the yarn tension on the lower bridge and the upper bridge and/or adjust the position of the weaving frames. After the positioning, these changes will be reversed.
  • the fabric guiding device (1) can also be provided with position sensors (9) arranged at both ends of the device, either to measure the distance of both the upper bridge (2) and the lower bridge (3) from the cutting knife (8) or to measure the mutual distance between the upper bridge (2) and the lower bridge (3), or both.
  • These measurement signals recorded by the position sensors (9) can be displayed within the visual field of the user (operator).
  • the user During the adjustment of the bridges, he can simply read off what the new jaw height is (in the case of measurement of the distance between the upper bridge (2) and the lower bridge (3)) or what the new distance is between the upper bridge (2) and the cutting knife (8) and/or between the lower bridge (3) and the cutting knife (8) (in a good setting, both of these distances should be substantially identical). In this way, the user
  • the position sensors used are, for example, contactless sensors such as those based on laser beams, for example.
  • a processor unit can also be used in order to move the upper bridge (2) and/or the lower bridge (3) over a specified distance via the drive means in combination with the signals from the position sensors.
  • the first (4a) and the second (4b) drive means are preferably actuated synchronously.
  • the fabric guiding device (1) can also be provided with one or more position sensors in the middle of the lower bridge. With the display of the measurement signals from this (these) position sensor(s) in combination with the desired middle position of the lower bridge, the user can minimize the bending of the lower bridge during the positioning of the lower bridge.
  • the user can provide the processor unit with a (manual) measurement value for the bending of the lower bridge, so that it is still possible to take into account the bending during the movement of the lower bridge and thus minimize the bending to the greatest possible extent.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP16713093.9A 2015-03-12 2016-03-10 Anpassung der gegenseitigen position der latitudinalen teile einer stoffführungsvorrichtung Active EP3268522B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE20155135A BE1022813A9 (nl) 2015-03-12 2015-03-12 Regeling van de onderlinge positie van de breedtestukken van een weefselgeleidingsinrichting
PCT/IB2016/051369 WO2016142899A1 (en) 2015-03-12 2016-03-10 Adjustment of the mutual position of the latitudinal parts of a fabric guiding device

Publications (2)

Publication Number Publication Date
EP3268522A1 true EP3268522A1 (de) 2018-01-17
EP3268522B1 EP3268522B1 (de) 2019-05-29

Family

ID=53783513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16713093.9A Active EP3268522B1 (de) 2015-03-12 2016-03-10 Anpassung der gegenseitigen position der latitudinalen teile einer stoffführungsvorrichtung

Country Status (5)

Country Link
US (1) US20180073171A1 (de)
EP (1) EP3268522B1 (de)
CN (1) CN107257870B (de)
BE (1) BE1022813A9 (de)
WO (1) WO2016142899A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018211531B4 (de) 2018-07-11 2020-03-05 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Webmaschine sowie Verfahren zum Führen eines Gewebes in einer Webmaschine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3204669A (en) * 1963-07-03 1965-09-07 Morgan Valentine Co Inc L Manufacture of cut pile fabrics
GB1127341A (en) * 1966-01-18 1968-09-18 G H Norton & Company Ltd Improvements in or relating to woven pile products and the weaving thereof
CH594084A5 (de) * 1974-10-29 1977-12-30 Patax Trust Reg
DE2659097C2 (de) * 1976-12-27 1985-02-21 Girmes-Werke Ag, 4155 Grefrath Vorrichtung zum Trennen von Doppelplüsch-Warenbahnen
US4176692A (en) * 1978-08-21 1979-12-04 Cox Foundry & Machine Co. Rotating driving mechanism for imparting reciprocatory motion to a driven element
FR2527654A1 (fr) * 1982-05-26 1983-12-02 Alsacienne Constr Meca Perfectionnement aux dispositifs de coupe des poils pour machine a tisser le velours en double nappe
JPS609983U (ja) * 1983-06-30 1985-01-23 株式会社　川島織物 ダブルパイル織機
BE1000995A4 (nl) * 1987-10-12 1989-05-30 Wiele Michel Van De Nv Inrichting voor het regelen van de beet in de snijinrichting van dubbelstukweefmachines.
DE4306493A1 (de) * 1993-03-03 1994-09-08 Genkinger Hebe Foerdertech Verfahren und Vorrichtung zum Parallelrichten eines Transportwagens
BE1015479A3 (nl) * 2003-04-23 2005-04-05 Wiele Michel Van De Nv Symmetrische beetmeting.
EP1505182B1 (de) * 2003-07-30 2007-05-23 Stäubli GmbH Schneidvorrichtung für das Trennen von Doppelflorgewebe
DE502006001666D1 (de) * 2005-09-02 2008-11-13 Textilma Ag Verfahren zur herstellung eines samtbandes mit doppelseitigem flor und bandwebmaschine zur durchführung des verfahrens
CN101487161A (zh) * 2009-02-20 2009-07-22 常州市悦腾机械有限公司 双层绒坯布切割通道对称调节装置

Also Published As

Publication number Publication date
CN107257870B (zh) 2019-10-18
EP3268522B1 (de) 2019-05-29
WO2016142899A1 (en) 2016-09-15
BE1022813A9 (nl) 2016-10-04
BE1022813B1 (nl) 2016-09-13
BE1022813A1 (nl) 2016-09-13
US20180073171A1 (en) 2018-03-15
CN107257870A (zh) 2017-10-17

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