EP0484274B1 - Projektilwebmaschine mit steuerbarer Nullpunktslage des Torsionsstabs - Google Patents

Projektilwebmaschine mit steuerbarer Nullpunktslage des Torsionsstabs Download PDF

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Publication number
EP0484274B1
EP0484274B1 EP91810780A EP91810780A EP0484274B1 EP 0484274 B1 EP0484274 B1 EP 0484274B1 EP 91810780 A EP91810780 A EP 91810780A EP 91810780 A EP91810780 A EP 91810780A EP 0484274 B1 EP0484274 B1 EP 0484274B1
Authority
EP
European Patent Office
Prior art keywords
torsion bar
adjusting lever
slideway
intermediate member
loom
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
Application number
EP91810780A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0484274A1 (de
Inventor
Mauritius Bollier
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.)
Itema Switzerland Ltd
Original Assignee
Sultex AG
Maschinenfabrik Rueti AG
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 Sultex AG, Maschinenfabrik Rueti AG filed Critical Sultex AG
Publication of EP0484274A1 publication Critical patent/EP0484274A1/de
Application granted granted Critical
Publication of EP0484274B1 publication Critical patent/EP0484274B1/de
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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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/12—Driving, starting, or stopping arrangements; Automatic stop motions for adjusting speed

Definitions

  • the invention relates to a projectile loom according to the preamble of claim 1 and a method for operating this loom.
  • Such a weaving machine is known from CH-PS-641506 (T.563):
  • the variable zero position of the torsion bar is adjusted with regard to a constant entry speed by means of an actuator and a control mechanism.
  • Functional fluctuations occur, for example, due to business interruptions.
  • the weft insertion takes place considerably slower - with the torsion bar's zero position unchanged. So that the projectiles do not arrive too late in the safety gear after a cold start, the zero position must be set so that the torsion bar is tensioned more than would be necessary for normal operation. If means for adjusting the zero point position are dispensed with, the projectile flight takes place faster than necessary in normal operation, and this means an unnecessary expenditure of energy and increased wear on the projectiles, the guide teeth, the catch brake and the weft insertion device.
  • the projectile weaving machine can be operated more economically in terms of energy consumption and wear due to the known torsion bar control.
  • the device described in CH-PS-641506 has a serious defect, namely that the actuator acts on the adjusting lever of the torsion bar in such a way that when the projectile is fired, the shooting device reacts with a harmful impact on the actuator. It is an object of the invention to provide means by which this retroactive impact stress is not exerted, or at least weakened, on the actuator. This object is achieved by the characterizing features of claim 1.
  • the dependent claims 2 to 9 relate to advantageous embodiments of the invention, in particular three different exemplary embodiments being characterized.
  • the method claims 10 and 11 relate to the adjustment of the zero position of the torsion bar, specifically when this is advantageously carried out.
  • the weft insertion device 100 shows the following components of the weft insertion device 100: the torsion bar 101; the racket shaft 102 with the lever 103 to the roller lever, not shown, over which the torsion bar is stretched; the hammer lever 104 only partially shown; the tensioning tube 105, which can be fixed in place on the weaving machine with the flange 106; the housing 107 with the cover 108 for the torsion bar sensor 109 rotatably mounted therein (shown schematically); and the adjusting lever 110 with the sliding block 111.
  • the two arrows 98 and 99 shown in FIG. 1 indicate the direction of movement when the projectile is fired.
  • the servomotor 1 for example a stepper motor, which is connected via the connecting cable 2 to a logic circuit of the torsion bar control, not shown; the threaded spindle 3 with a slide 4 guided on it; the wedge-shaped intermediate body 10 with the groove 11, in which the carriage 4 engages and thus a transmission produces a rotational movement of the spindle 4 in a linear movement of the intermediate body 10.
  • the carriage 4 can be designed such that, as shown in FIG. 1a, it is longer than the width of the groove 11.
  • the intermediate body 10 can instead of vertical, i.e. directly to the torsion bar 101, also at a different angle, for example horizontally.
  • the intermediate body 10 can also be moved directly through the threaded spindle 3 of the servomotor 1 without the slide 4 as a transition piece.
  • a gear mechanism can also be provided instead of the carriage 4, a gear mechanism can also be provided.
  • FIG. 2 shows a longitudinal section through a "wedge housing” 120 with the wedge-shaped intermediate piece 10 and the adjusting lever 110.
  • the one wedge flank 10a of the intermediate piece 10 lies on the stationary sliding surface 121a, which is located on the inside of the housing wall 121.
  • the other wedge flank 10b forms the contact surface to the sliding surface 111b of the sliding block 111.
  • the sliding block 111 in turn is rotatably mounted in the adjusting lever 110 with a second sliding surface 111a.
  • a force emanating from the adjusting lever 110 is directed onto the extended sliding surface 121a by the intermediate body 10. This is advantageous since forces and impacts which originate from the torsion bar 101 do not act on the actuator 1, or act only to a small extent, but rather from the housing 120 can be absorbed or absorbed without causing damage.
  • the force exerted by the adjusting lever 110 on the intermediate body 10 has a component parallel to the sliding surface 121a.
  • This force component which depends on the angle between the two wedge flanks 10a and 10b, should be so small, for example, that the frictional forces occurring on the sliding surface 121a prevent the intermediate body 10 from shifting. It is also possible for the force component mentioned to be partially absorbed by the actuator 1. The gravity of the intermediate body 10 can also be absorbed by the actuator.
  • the displacement of the intermediate body 10 by the servomotor 1 is advantageously carried out with the torsion bar relaxed, ie immediately after the shot is fired. Then the servomotor 1 only has to do work against the frictional forces and the weight of the intermediate body 10.
  • the stroke by which the intermediate body 10 can be displaced is indicated by the double arrow 17 in FIG. This stroke corresponds to a change in the zero point position by an angular range of around 10 degrees.
  • the position of the intermediate body 10 can be monitored, for example, by means of sensors.
  • sensors for example, two inductive sensors 15a and 15b (FIG. 2) can be used to generate a message about the position of the guide body 10 for the logic circuit of the torsion bar control.
  • the overload protection of the torsion bar 101 can also be carried out directly by means of a strain gauge 150 applied to the torsion bar 101 (with the connections 151 to a measuring circuit, not shown, see FIG. 1).
  • the torsion bar 101 After a machine stop, the torsion bar 101 is usually in a tensioned state. In order to be able to change the zero position of the torsion bar 101 when the weaving machine is at a standstill, the torsion bar 101 must first be relaxed. It is therefore advantageous if a detachable connection (not shown) is provided between the housing 120 (FIG. 2) and the tensioning tube 105 (FIG. 1), so that the housing 120 pivots in the direction of the arrow 18 by releasing this connection thereby the torsion bar 101 can be relaxed.
  • a detachable connection (not shown) is provided between the housing 120 (FIG. 2) and the tensioning tube 105 (FIG. 1), so that the housing 120 pivots in the direction of the arrow 18 by releasing this connection thereby the torsion bar 101 can be relaxed.
  • the second embodiment of the intermediate body which is shown in Figure 3, is a bolt 20, which consists of a threaded part 21 and a part 22 with keyways 23.
  • This intermediate body 20 is moved by rotating by means of a pinion 5 of the servomotor 1 and a gear 6.
  • 3a shows a top view of these two gear wheels 5 and 6 and a cross section through part 22 along the line A-A in FIG.
  • the intermediate body 20 By internal teeth of the gear 6, which engage in the grooves 23, the intermediate body 20 by one Rotation axis rotated, which is perpendicular to the sliding surface 111b of the adjusting lever 110.
  • the stationary sliding surface 121a for the sliding surface 20a of the intermediate body 20 is the internal thread of the threaded sleeve 121 ', which is attached to the housing wall 121. Rotation of the intermediate body 20 obviously leads to the pivoting movement of the adjusting lever 110.
  • the third exemplary embodiment of the intermediate body which is shown in FIG. 4, is a disk 30, which consists of a spiral part 31 and a drive part 32 with a ring gear 33.
  • This intermediate body 30 is rotatably mounted on a pin 121 ′′, which is attached to the housing.
  • the rotation of the intermediate body 30 generated by the pinion 5 of the servomotor, not shown, takes place about an axis of rotation which runs parallel to the pivot axis of the adjusting lever 110.
  • One sliding surface 30a of the intermediate body 30 is circular, the other, 30b, spiral.
  • the stationary sliding surface 121a on the pin 121 ′′ is located within the zone which is marked by a dash-dotted arc. Since the sliding surface 30b has a non-constant curvature, it is advantageous to design the associated sliding surface of the sliding block 111 to be corrugated, as is indicated in FIG.
  • the zero point position of the torsion bar should be adjusted when the torsion bar is not under tension. This is advantageously carried out during the operation of the weaving machine.
  • the zero point adjustment can be carried out step-by-step on the basis of control signals, with an adjusting step immediately after the The projectile is fired as long as the torsion bar is not or only slightly tensioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
EP91810780A 1990-11-02 1991-10-04 Projektilwebmaschine mit steuerbarer Nullpunktslage des Torsionsstabs Expired - Lifetime EP0484274B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3479/90 1990-11-02
CH347990 1990-11-02

Publications (2)

Publication Number Publication Date
EP0484274A1 EP0484274A1 (de) 1992-05-06
EP0484274B1 true EP0484274B1 (de) 1995-11-15

Family

ID=4256864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810780A Expired - Lifetime EP0484274B1 (de) 1990-11-02 1991-10-04 Projektilwebmaschine mit steuerbarer Nullpunktslage des Torsionsstabs

Country Status (5)

Country Link
US (1) US5186216A (ru)
EP (1) EP0484274B1 (ru)
CN (1) CN1061250A (ru)
DE (1) DE59106911D1 (ru)
RU (1) RU2051228C1 (ru)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6425594B1 (en) * 2000-05-24 2002-07-30 Meritor Light Vehicle Technology, Llc Torsion bar with multiple arm adjusters for a vehicle suspension system
US6945522B2 (en) * 2002-04-30 2005-09-20 Meritor Heavy Vehicle Technology, Llc Multi-rate torsion bar independent suspension spring
US7494143B2 (en) * 2003-04-24 2009-02-24 Verbowski Larry J Adjustable torsion bar lever
US8051633B2 (en) * 2010-03-29 2011-11-08 Cnh America Llc Cutterbar adjustment support for a crop harvesting header
US7930871B1 (en) 2010-03-29 2011-04-26 Cnh America Llc Cutterbar support for a crop harvesting header
US7950212B1 (en) 2010-03-29 2011-05-31 Cnh America Llc Cutterbar support for a crop harvesting header
US8141331B2 (en) 2010-04-20 2012-03-27 Cnh America Llc Divider support apparatus with integral adjustable torsional preload mechanism and vibration damper
CN101890445A (zh) * 2010-07-29 2010-11-24 无锡神冲锻压机床有限公司 一种折弯机斜铁装置
CN104696349A (zh) * 2013-12-10 2015-06-10 大连顺杰机械有限公司 一种连杆
CH711367A1 (de) * 2015-07-31 2017-01-31 Rieter Ag Maschf Lagerung eines Flexibelbogens in einer Wanderdeckelkarde.
CN108869996A (zh) * 2018-08-16 2018-11-23 安徽爱依特科技有限公司 机器人投影装置及其教育机器人

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH313155A (de) * 1952-11-03 1956-03-31 Sulzer Ag Schützenschlagvorrichtung an einer Webmaschine, bei welcher die Schlagkraft von einem Kraftspeicher geliefert wird
CH641506A5 (de) * 1980-01-23 1984-02-29 Sulzer Ag Webmaschine.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1089665A (fr) * 1952-11-03 1955-03-21 Sulzer Ag Dispositif chasse-navette pour métiers à tisser
FR1089664A (fr) * 1952-11-03 1955-03-21 Sulzer Ag Dispositif de chasse-navette de métiers à tisser
US2715422A (en) * 1952-11-03 1955-08-16 Sulzer Ag Shuttle picking mechanism
FR1516931A (fr) * 1967-01-17 1968-02-05 Simca Automobiles Sa Dispositif de réglage d'une barre de torsion, notamment pour un couvercle de coffred'un véhicule automobile

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH313155A (de) * 1952-11-03 1956-03-31 Sulzer Ag Schützenschlagvorrichtung an einer Webmaschine, bei welcher die Schlagkraft von einem Kraftspeicher geliefert wird
CH641506A5 (de) * 1980-01-23 1984-02-29 Sulzer Ag Webmaschine.

Also Published As

Publication number Publication date
EP0484274A1 (de) 1992-05-06
CN1061250A (zh) 1992-05-20
DE59106911D1 (de) 1995-12-21
RU2051228C1 (ru) 1995-12-27
US5186216A (en) 1993-02-16

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