EP0363311A1 - Schafttriebrahmen mit Federelement - Google Patents

Schafttriebrahmen mit Federelement Download PDF

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Publication number
EP0363311A1
EP0363311A1 EP89810659A EP89810659A EP0363311A1 EP 0363311 A1 EP0363311 A1 EP 0363311A1 EP 89810659 A EP89810659 A EP 89810659A EP 89810659 A EP89810659 A EP 89810659A EP 0363311 A1 EP0363311 A1 EP 0363311A1
Authority
EP
European Patent Office
Prior art keywords
shaft
drive device
shaft drive
spiral spring
spring
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.)
Withdrawn
Application number
EP89810659A
Other languages
German (de)
English (en)
French (fr)
Inventor
Robert Bucher
Helmut Macho
Schultz Horst
Georg Schuon
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.)
Sulzer AG
Original Assignee
Sulzer AG
Gebrueder Sulzer 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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Publication of EP0363311A1 publication Critical patent/EP0363311A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/144—Features common to dobbies of different types linking to the heald frame

Definitions

  • the invention relates to a shaft drive device for the transmission of the drive movement of a dobby to a heald frame of a loom with shaft drive members acting on the shaft in the up and down movement direction, which exert a spring force on the shaft in one direction of movement.
  • Shaft drive devices of the type mentioned are generally used for a negative shaft drive; the shaft drive members acting via spring pressure are then arranged between the weaving machine and the shaft and are tensioned by the shaft movement taking place in one direction, which provides a drive for the return movement of the shaft.
  • the shaft drive members acting by spring force have spring registers which can be stretched via deflecting levers and which have ten or more tension springs arranged parallel to one another in one plane.
  • the diameter of the individual tension spring and thus the width of the spring register can thus be kept smaller than the shaft width, for example, under the shaft, without having to increase the distance between the heald frames.
  • Such an arrangement can also be used in a positive shaft drive, in which the return movement of the shaft, like the forward movement, is carried out by a shaft drive member connected to the dobby. Bearings, joints, articulation points, etc. of the shaft drive mechanism are then permanently pre-tensioned, which reduces play and thus wear, particularly when the shaft is reversed.
  • Japanese publication 34674/72 now shows shaft drive members of a shaft drive device which act in the end position of the shaft by spring pressure.
  • These sheep drive links are designed as leaf springs, each of which are at the same height in pairs, run against the shaft from the sides of the weaving machine and are clamped on a longitudinal side of the shaft with horizontally held end sections.
  • the leaf springs brake the shaft moving in the end position and store energy through their deformation, which is released when the springs are deformed again and which helps to accelerate the shaft towards its other end position.
  • the shaft drive is significantly relieved when the movement reverses, which opens the way to a simplified sheep drive mechanism.
  • the shaft drive device is characterized in that at least one shaft drive member exerting spring force is designed as a spring spring which is at least partially resiliently deformable over its length and is freely running via a only shaft-side and at most two weaving machine-side connection points are held in position, wherein either the shaft-side and single weaving-machine side connection point each having a pivot connection lie on a common vertical or the vertical line through the shaft-side connection point is the axis of symmetry for the course of a spiral spring which is fixed on both sides on the weaving machine side connection points .
  • FIG. 1 shows a weaving machine 10 with side walls 11, 12. Guides 21, 22 for a vertical heald frame 30 that can be moved up and down are located on the side walls 11, 12. Also shown is a shaft drive for the shaft 30, consisting of a dobby 40 that provides the drive movement and a shaft drive device.
  • the latter has shaft drive members on the shaft 30 at connecting points 51, 61 which engage in the downward movement direction and are designed as conventional cable pulls 50, 60 and which are connected to the dobby 40 and in Direction of upward movement at connecting points 70, 80 acting as a spiral spring 90, 100 and exerting spring force exerted on shaft drive members.
  • Deflection rollers 115, 125 for the cable pulls 50, 60 are mounted vertically below the connection points 70, 80 on bearings 110, 120.
  • the U-shaped bending springs 90, acting as compression springs, also lie in the plane of the shaft movement and in the space below the shaft 30. 100, with ends 91, 101 on the shaft side and ends 92, 102 on the loom side, connection points 130, 140 on the loom side lying in each case on a vertical through the corresponding connection points 70, 80 on the shaft side.
  • connection points 70, 130 and 80, 140 are arranged close to the side walls 11, 12, which results in a symmetrical arrangement of the two spiral springs 90, 100 with respect to a vertical lying between them, and the spiral spring ends 91, 92, 101, 102 articulated freely in the connection points 70, 80, 130, 140; the bending spring bodies 93, 103 are resiliently deformable over their entire length and are designed to run freely between the articulation points at the ends.
  • connection points 130, 140 have a device for optionally changing the bending spring preload.
  • This has eccentrics 170, 180 acting on rocker arms 150, 160; the rocker arms 150, 160 are articulated at one end 152, 162 to the spiral spring ends 92, 102.
  • Each rotation of the eccentrics causes a change in the distance of the spiral spring ends 91, 92 and 101, 102 from one another, which leads to a different prestressing of the spiral springs, and consequently to a predeterminable shaft acceleration which is optimal for a specific weaving operation.
  • the shank 30 starts to move against the spring pressure of the spiral springs 90, 100 and presses the latter together.
  • the free-running spring bodies 93, 103 can deflect against the space between them, with the result that any side forces which undesirably act on the connection points 70, 80 do not arise.
  • the articulated spring ends 91, 92, 101, 102 execute a corresponding pivoting movement in the connection points 70, 80, 130, 140, so that the bending moments building up in the springs cannot become effective with respect to the shaft 30.
  • only vertically acting components are introduced into the shaft 30 by the tension force of the spiral springs 90, 100.
  • FIG. 2 shows a section along the line AA through the connection point 70 (FIG. 1); the joints 80, 120, 140 (Fig. 1) have articulated joints of the same type.
  • the spring end 91 is gripped by the adjacent section of the shaft 30; a rear collar 190 is connected in one piece to the spiral spring end 91 and holds it in position together with a locking plate 200 on the shaft 30, a screw 210 securing the locking plate 200 in position on the spring end 91.
  • a ring 220 made of slidable or rubber-elastic material serves as a transmission element for vertically directed forces and at the same time as a pivoting member of the connection point designed as a pivoting connection.
  • FIG. 3a shows an embodiment of the shaft drive device with two bending springs 90, 100 which engage centrally on the lower longitudinal side 31 of the shaft 30.
  • the weaving machine-side connection points 190, 195 are each provided with a device for adjusting the spring tension with a pivoting element designed as a rocker arm 191, 196 Which rocker arm is mounted on the weaving machine side via a bearing 192, 197 and is connected in an articulated manner to the spiral spring end 92, 102 at its outer end 193, 198.
  • the adjacent position of the weaving machine-side connection points 190, 195 allows the inner rocker arm ends 194, 199 to interlock positively via a toothing, so that the rocker arms 191, 196 can be adjusted symmetrically.
  • the rocker arms 191, 196 must be clamped in the storage so that they do not adjust under load.
  • FIG. 3b shows another embodiment of the devices for adjusting the bending spring preload; the bending springs 90, 100 are articulated on the weaving machine side to pivoting members designed as pivoting disks 200, 205, which in turn are connected to one another via a link designed as a connecting lever 210 for uniform pivoting.
  • 3c shows a further embodiment of the device for adjusting the bending spring preload.
  • the ends of the single spiral spring 210 are firmly clamped by connecting points 241, 242 in swivel plates 220, 225. Due to the firm clamping, lateral forces are introduced into the spiral spring ends 211, 212, which allows the behavior of the spring to be changed over a particularly wide range.
  • the symmetrical arrangement of the two spring legs 213, 214 with respect to the vertical through the connection point 240 on the shaft causes that the lateral forces and any moments cancel themselves at the location of the connection point 240, and consequently only vertically directed forces act on the shaft 30.
  • FIGS. 3a-c have in common that the shaft-side connection points 70, 80, 220, 240 both of the bending springs 90, 100; 210 as well as a single shaft drive member, which is connected to the dobby and is designed as a cable pull 230, are arranged in a central region of the shaft longitudinal side 32. So that they are mostly at the same time by the bending springs 90, 100; 210 on pressure and the places in the shaft 30 which are stressed by the cable pull 230 close to one another, which is favorable in view of its stress. It is also advantageous that only one cable pull 230 is sufficient to actuate the shaft. Since the movement forces act in the middle of the shaft longitudinal side 32, the danger of the shaft 30 tilting is prevented by lengthening the shaft sides 33, 34 (FIG. 3a) running in the guides 21, 22.
  • FIG. 4 shows a shaft drive device designed for negative shaft drive with two endless spiral springs 250, 255 which are self-contained all round Longitudinal side 32 projecting wall portions 33, 34 caught and thus stabilized laterally.
  • These wall sections 33, 34 although of the simplest construction, stiffen the longitudinal side 31 of the shaft, which makes it possible to keep the force introduction points of the spiral springs and of the single tension member 230 at a greater distance from one another; this is particularly important in the embodiment shown, because of the U-shaped shape curved springs double-trained, all-round springs considerable spring forces are applied for large shaft accelerations.
  • FIG. 5 shows a shaft drive device provided for positive shaft drive with spiral springs designed as leaf springs 260, 270.
  • the leaf springs 260, 270 each have two legs 262, 263, 272, 273 converging in a tip 261, 271, which have ends 264, 274 in connection points 265, 275 on the longitudinal side 31 of the shaft and ends 266, 276 on bearings on the weaving machine side 267, 277 are articulated.
  • stop elements for the springs 260, 270 designed as a stroke limiting body 280, 285, are arranged with their legs 262, 263 at a distance from one another in the manner of clamp-like engagement surfaces 281, 282, 286, 287.
  • Lifting rods 290, 295 are articulated on the shaft 30 in connection points 291, 296 on the shaft side and articulatedly connected to the one arm 301, 306 on the weaving machine side toggle lever 300, 305.
  • the other toggle lever arms 302, 307 are articulated on a drive rod 310 which is connected to the dobby 40 via a transmission section 311.
  • This arrangement with at least one shaft drive member 315, 316 acting in the direction of the spring force provides a constant preload in the conventional shaft drive 40, 311, 310, 300, 305, 290, 295, which is conventionally constructed; This relieves the joints and ensures a shaft movement without play.
  • the stroke limiting bodies 280, 285 prevent excessive relaxation of the springs 260, 270; manipulation of the shaft, for example when changing the shaft, is made considerably easier.
  • An adjustment drive for the eccentrics 170, 180 is preferably provided with a belt, chain or rod drive, which ensures a uniform adjustment of the eccentrics 170, 180.
  • a crossed drive is advantageous since it causes the eccentrics 170, 180 to be adjusted in opposite directions.
  • the resultant symmetry with respect to a vertical lying between the spring ends 92, 102 has the consequence that the spring ends 92, 102 are adjusted uniformly, which is not the case if e.g. Eccentrics 170, 180 of the same design act in the same direction of rotation on differently inclined rocker arms 150, 160.
  • the spiral springs 90, 100 are preferably produced using fiber-reinforced plastic.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP89810659A 1988-10-04 1989-09-04 Schafttriebrahmen mit Federelement Withdrawn EP0363311A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3686/88 1988-10-04
CH3686/88A CH679869A5 (enrdf_load_html_response) 1988-10-04 1988-10-04

Publications (1)

Publication Number Publication Date
EP0363311A1 true EP0363311A1 (de) 1990-04-11

Family

ID=4261337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810659A Withdrawn EP0363311A1 (de) 1988-10-04 1989-09-04 Schafttriebrahmen mit Federelement

Country Status (4)

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US (1) US5002096A (enrdf_load_html_response)
EP (1) EP0363311A1 (enrdf_load_html_response)
JP (1) JPH02145831A (enrdf_load_html_response)
CH (1) CH679869A5 (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627512A1 (fr) * 1993-06-03 1994-12-07 S.A. DES ETABLISSEMENTS STAUBLI (France) Dispositif amortisseur pour machine à tisser
CN102534967A (zh) * 2012-02-06 2012-07-04 江苏华峰自然纤维制品有限公司 多花型自然纤维提花织机摆臂
CN102534923A (zh) * 2012-02-06 2012-07-04 江苏华峰自然纤维制品有限公司 多花型自然纤维提花织机传动机构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1275085B (it) * 1994-08-30 1997-07-30 Nuovo Pignone Spa Sistema di attacco rapido dei quadri dei licci di un telaio tessile
DE10341629B4 (de) * 2003-09-10 2007-04-12 Groz-Beckert Kg Vibrationsarmes Fachbildesystem
BE1016217A5 (nl) * 2004-09-28 2006-05-02 Wiele Michel Van De Nv Gaapvormingsinrichting en weefmachine voorzien van dergelijke gaapvormingsinrichting.
US7806149B2 (en) * 2006-09-28 2010-10-05 Textilma Ag Shedding apparatus for a weaving machine, in particular for a ribbon weaving machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543725A (enrdf_load_html_response) *
FR613527A (fr) * 1925-07-24 1926-11-19 Dispositif de commande des excentriques de démarchement et des cadres de lisses dans les métiers à tisser

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR380032A (fr) * 1907-06-26 1907-11-27 Jean Baptiste Perrotey Appareil nouveau applicable aux ratières anglaises pour la suppression des ficelles et ressorts tire-lames par le bas; spécialement combiné pour tissus faconnés se tissant avec lisses métalliques
GB505161A (en) * 1938-03-07 1939-05-05 Hermann Staeubli Improvements in and relating to heald lifting arrangements for looms
CS154950B1 (enrdf_load_html_response) * 1971-07-02 1974-04-30
CH571596A5 (enrdf_load_html_response) * 1973-11-22 1976-01-15 Mueller Jakob
US4391304A (en) * 1981-04-16 1983-07-05 Ray A. Taylor Warp tension structure
IT8322543A0 (it) * 1983-08-12 1983-08-12 Fimtessile Tiranteria per il controllo dei quadri dei licci in macchine di armatura negative.
GB8617540D0 (en) * 1986-07-17 1986-08-28 British Petroleum Co Plc Leaf spring
FR2617204B1 (fr) * 1987-06-26 1989-10-27 Staubli Sa Ets Dispositif pour l'accouplement des cadres de lisses aux elements de transmission d'une mecanique pour la formation de la foule

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543725A (enrdf_load_html_response) *
FR613527A (fr) * 1925-07-24 1926-11-19 Dispositif de commande des excentriques de démarchement et des cadres de lisses dans les métiers à tisser

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0627512A1 (fr) * 1993-06-03 1994-12-07 S.A. DES ETABLISSEMENTS STAUBLI (France) Dispositif amortisseur pour machine à tisser
FR2705972A1 (fr) * 1993-06-03 1994-12-09 Staubli Sa Ets Dispositif amortisseur pour machine à tisser.
CN102534967A (zh) * 2012-02-06 2012-07-04 江苏华峰自然纤维制品有限公司 多花型自然纤维提花织机摆臂
CN102534923A (zh) * 2012-02-06 2012-07-04 江苏华峰自然纤维制品有限公司 多花型自然纤维提花织机传动机构
CN102534967B (zh) * 2012-02-06 2014-01-22 江苏华峰自然纤维制品有限公司 多花型自然纤维提花织机摆臂

Also Published As

Publication number Publication date
JPH02145831A (ja) 1990-06-05
US5002096A (en) 1991-03-26
CH679869A5 (enrdf_load_html_response) 1992-04-30

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