EP0484274A1 - Métier à projectiles avec mise à zéro réglable de la position de la barre de torsion - Google Patents
Métier à projectiles avec mise à zéro réglable de la position de la barre de torsion Download PDFInfo
- Publication number
- EP0484274A1 EP0484274A1 EP91810780A EP91810780A EP0484274A1 EP 0484274 A1 EP0484274 A1 EP 0484274A1 EP 91810780 A EP91810780 A EP 91810780A EP 91810780 A EP91810780 A EP 91810780A EP 0484274 A1 EP0484274 A1 EP 0484274A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- intermediate body
- adjusting lever
- torsion bar
- sliding surface
- zero position
- 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
Links
- 238000003780 insertion Methods 0.000 claims abstract description 9
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 238000009941 weaving Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims 2
- 230000006735 deficit Effects 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- D03D47/12—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 harmful impact on the actuator. It is an object of the invention to provide means by which this retroactive impact stress is not exerted on the actuator, or is at least weakened. 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 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 with the sliding surface 111b of the sliding block 111.
- the sliding block 111 is in turn 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, as a result, forces and impacts emanating 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 releasable connection (not shown) is provided between the housing 120 (FIG. 2) and the tensioning tube 105 (FIG. 1), so that by releasing this connection the housing 120 pivots in the direction of the arrow 18 and thereby the torsion bar 101 can be relaxed.
- a releasable connection (not shown) is provided between the housing 120 (FIG. 2) and the tensioning tube 105 (FIG. 1), so that by releasing this connection the housing 120 pivots in the direction of the arrow 18 and 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 is 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. Turning 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 fastened 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 in corrugated form, as shown in FIG .4 is indicated.
- the zero 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH347990 | 1990-11-02 | ||
CH3479/90 | 1990-11-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0484274A1 true EP0484274A1 (fr) | 1992-05-06 |
EP0484274B1 EP0484274B1 (fr) | 1995-11-15 |
Family
ID=4256864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91810780A Expired - Lifetime EP0484274B1 (fr) | 1990-11-02 | 1991-10-04 | Métier à projectiles avec mise à zéro réglable de la position de la barre de torsion |
Country Status (5)
Country | Link |
---|---|
US (1) | US5186216A (fr) |
EP (1) | EP0484274B1 (fr) |
CN (1) | CN1061250A (fr) |
DE (1) | DE59106911D1 (fr) |
RU (1) | RU2051228C1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (9)
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 |
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 |
US8051633B2 (en) * | 2010-03-29 | 2011-11-08 | Cnh America Llc | Cutterbar adjustment 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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1089664A (fr) * | 1952-11-03 | 1955-03-21 | Sulzer Ag | Dispositif de chasse-navette de métiers à tisser |
FR1089665A (fr) * | 1952-11-03 | 1955-03-21 | Sulzer Ag | Dispositif chasse-navette pour métiers à tisser |
GB2067606A (en) * | 1980-01-23 | 1981-07-30 | Sulzer Ag | Looms |
Family Cites Families (3)
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 |
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 |
-
1991
- 1991-10-03 US US07/770,644 patent/US5186216A/en not_active Expired - Fee Related
- 1991-10-04 DE DE59106911T patent/DE59106911D1/de not_active Expired - Fee Related
- 1991-10-04 EP EP91810780A patent/EP0484274B1/fr not_active Expired - Lifetime
- 1991-11-01 CN CN91110474.7A patent/CN1061250A/zh active Pending
- 1991-11-01 RU SU915001899A patent/RU2051228C1/ru active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1089664A (fr) * | 1952-11-03 | 1955-03-21 | Sulzer Ag | Dispositif de chasse-navette de métiers à tisser |
FR1089665A (fr) * | 1952-11-03 | 1955-03-21 | Sulzer Ag | Dispositif chasse-navette pour métiers à tisser |
GB2067606A (en) * | 1980-01-23 | 1981-07-30 | Sulzer Ag | Looms |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH711367A1 (de) * | 2015-07-31 | 2017-01-31 | Rieter Ag Maschf | Lagerung eines Flexibelbogens in einer Wanderdeckelkarde. |
US10240261B2 (en) | 2015-07-31 | 2019-03-26 | Maschinenfabrik Rieter Ag | Support of a flexible bend in a revolving flat card |
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 |
Also Published As
Publication number | Publication date |
---|---|
EP0484274B1 (fr) | 1995-11-15 |
RU2051228C1 (ru) | 1995-12-27 |
DE59106911D1 (de) | 1995-12-21 |
CN1061250A (zh) | 1992-05-20 |
US5186216A (en) | 1993-02-16 |
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