EP1881096A1 - Mécanisme d'entraînement des lames et tige de couplage - Google Patents

Mécanisme d'entraînement des lames et tige de couplage Download PDF

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Publication number
EP1881096A1
EP1881096A1 EP07111313A EP07111313A EP1881096A1 EP 1881096 A1 EP1881096 A1 EP 1881096A1 EP 07111313 A EP07111313 A EP 07111313A EP 07111313 A EP07111313 A EP 07111313A EP 1881096 A1 EP1881096 A1 EP 1881096A1
Authority
EP
European Patent Office
Prior art keywords
coupling rod
side walls
rod according
edges
shaft drive
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Withdrawn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
EP07111313A
Other languages
German (de)
English (en)
Inventor
Holger Cebulla
Stefan Drope
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.)
Groz Beckert KG
Original Assignee
Groz Beckert KG
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 Groz Beckert KG filed Critical Groz Beckert KG
Publication of EP1881096A1 publication Critical patent/EP1881096A1/fr
Withdrawn legal-status Critical Current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
    • 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 coupling rod for a shaft drive gear for a hive and such a shaft drive transmission.
  • the shaft drive gearbox is used to quickly move the heald shaft vertically. It uses an approximately horizontal reciprocating motion of a shaft drive in the reciprocating motion to drive the heald.
  • the shaft drive transmission on three arranged in a row angle lever, which are each formed with two arms. The extending from a center of rotation down arms of the angle levers are interconnected by coupling rods. The approximately horizontal pointing arms of the angle lever, however, are connected via push rods with the lower shaft rod of the rectangular heald.
  • the above-mentioned reciprocating motion is introduced into one end of the angle lever, so that the heald can be moved up and down as desired.
  • the coupling rods must transmit tensile and compressive forces, which increase despite the otherwise desired and often achieved weight reduction of hedgehogs.
  • the tensile and compressive forces are oscillating.
  • the coupling rods perform no pure axial movement. They are connected at their ends to the arms of the angle lever and thereby suspended swinging. With fast movement, a lifting and lowering movement component is created, which can lead to an oscillating bending load of the coupling rods.
  • the coupling rod according to the invention for a shaft drive gear of a heald is an open sheet metal part educated.
  • its cross-section, apart from approximately attachable recesses, over the entire length of the coupling rod is the same. It can therefore be produced in simple sheet metal forming processes, for example, bending processes, roll forming processes and similar processes. This results in high production reliability at low cost.
  • the open sheet metal part can combine high buckling stiffness with low weight. This opens up the possibility of obtaining high machine speeds in a simple and cost-effective manner.
  • the cross section of the open sheet metal part preferably encloses a surface whose height to be measured vertically in the position of use is greater than its width to be measured horizontally in the position of use.
  • the width preferably does not exceed the width of a shaft rod.
  • the profile is open, i. the edges of the rod-like sheet metal part produced from a sheet metal strip, for example by roll forming, are connected to one another at least not continuously. This gives the coupling rods a certain flexibility, which can have an advantageous effect.
  • connection means for the angle lever of a shaft drive linkage may be provided.
  • the connection means are formed for example by connection openings which are formed in the preferably flat, ie flat, side walls of the coupling rod and, if desired, provided with a funnel-shaped edge. If necessary, one or more further connection points can be provided, which between are arranged the ends of the sheet-metal profile body. Such connection points can serve to connect further angle levers, guide or carrier straps or the like.
  • the ends of the body are preferably forked.
  • the bifurcated ends join integrally and seamlessly to the other sheet metal profile. They are produced by cutting out the sheet-metal profile which is formed continuously in the longitudinal direction with a constant cross-section. This preferred embodiment is easy to manufacture and is robust and durable.
  • connection openings provided for connecting the angle levers can be provided with a diameter which is at least as great as the width of the web wall.
  • the connection openings can thereby comprise hinge pins whose diameter is so great that the surface pressure occurring at the edge of the connection openings does not lead to excessive wear even in highly dynamic operation.
  • Preferred embodiments of the coupling rod have side walls with angled edges. These edges are preferably angled inwards (ie towards each other) or else outwards (ie away from each other) and give the coupling rod a sufficient rigidity while maintaining a certain elasticity, in particular a sufficient buckling rigidity.
  • the edges are preferably arranged at a distance from each other. You can also touch each other, but are not welded together, or at least not welded along their entire length. It is possible to provide an air gap or a selected material, such as a damping material, in a joint defined by both edges. It may be an adhesive, a plastic such as an elastomer or the like. Because of the lack of continuous metallic connection and the at least existing flexibility of this joint connection such sheet metal profiles are considered as "open profiles". Such open profiles can also be provided with a filling, for example of a plastic or a plastic foam.
  • the coupling rod gives a shaft drive linkage according to the invention a low total weight and a high load capacity at the same time low production costs.
  • FIG. 1 illustrates a heddle 1 which serves for shedding in a weaving machine.
  • healds 4 are held between its in use horizontally arranged upper shaft rod 2 and its lower shaft rod 3 to not further illustrated, corresponding Litzentragschienen, each having at least one eye.
  • a group of warp threads leads through these ears of healds.
  • Another set of warp threads passes between the healds.
  • These warp threads are held in at least one other heald 1.
  • the movements of the heald frames 1 are independently controllable. By up and down movement, which is marked in Figure 1 by an arrow, the warp threads of one group are offset vertically against the warp threads of the other group, thereby forming a shed. In the shed, the weft thread is entered transversely to all warp threads.
  • To the heald 1 include side supports 5, 6, which hold the shaft rods 2, 3 at a fixed distance from each other and form a rectangular frame with these. This is in the shedding as a whole vertically up and down, i. moved up and down.
  • a shaft drive 7 which is symbolized only by a rocker 8 and a connecting rod 9, which gives the rocker 8 a swinging movement about a center of rotation 10 around. This oscillating movement is symbolized in FIG. 1 by a corresponding arrow.
  • the rocker 8 forms the output of the shaft drive. 7
  • a shaft drive linkage 11 This includes a coupling rod 12, which is preferably arranged parallel to the shaft rods 2, 3 below the heald 1. It is connected at its two ends 13, 14, each with a downwardly directed arm 15, 16 of an angle lever 17, 18. Both angle levers 17, 18 are pivotally mounted about a stationary, respective center of rotation 19, 20, which is formed for example by a bearing pin on a not further illustrated frame. From each center of rotation 19, 20 extends another arm 21, 22 at approximately right angles to the arm 15, 16 away. At the ends of the arms 21, 22 connect push rods 23, 24 articulated, which are connected to the heald 1. For example, they are connected to the side supports 5, 6 to initiate the reciprocating drive movement there in the shaft rod 1. Alternatively, the angle lever 17, 18 may be connected via corresponding tabs with the shaft rod 3.
  • the coupling rod 12 is shown separately in Figures 2 to 4, to which reference is now made.
  • the coupling rod 12, the length of which may be, for example, one meter (1 m) or significantly higher, is designed as a shaped sheet metal part, in particular as a bent sheet metal part. It can be produced by bending, roll forming or any other suitable sheet metal forming process and has a constant cross section over its length, for example according to FIG.
  • the coupling rod 12 is then formed by two side walls 25, 26 which, when the coupling rod 12 is in the position of use, are oriented vertically and pass from the end 13 to the end 14.
  • the side walls 25, 26 are held parallel to each other at a distance and connected to each other via a web wall 27 which connects to bending lines 28, 29 seamlessly to the side walls 25, 26.
  • the web wall 27 may, as shown, formed flat or as needed also be provided with a curvature with longitudinal ribs or the like. The same applies to the side walls 25, 26th
  • the web wall 27 is cut out, so that cutouts 30, 31 are formed.
  • the bending lines 28, 29 terminate at the cutouts 30, 31 and lie in straight extension to the then exposed edges of the side walls 25, 26.
  • the side walls 25, 26 are provided at the ends 13, 14 with openings 32, 33, 34, 35 which form connection openings for the angle levers 17, 18.
  • the arranged at the ends 13, 14 openings 32, 33, 34, 35 are aligned with each other in pairs. It aligns opening 32 with opening 33 and opening 34 with opening 35. All openings are provided with inwardly directed frusto-conical indentations 36, 37, 38, 39, which hold an angle lever held between the side walls at a distance from the side wall and a possible bearing, eg center a ball bearing.
  • the side walls 25, 26 are provided at their edge remote from the web wall 27 with bent edges 40, 41.
  • these edges are 180 ° inwards, ie initially towards each other and then bent over to the web wall 27 out. They are preferably at a distance parallel to the respective side wall 25, 26, to which they connect. It is also possible that the edges 40, 41 after the above-described bends again on each other and then bent back to the side wall 25, 26. The edges 40, 41 then have additional bending lines 27, 28.
  • the Length of the edges 40, 41 which is to be measured parallel to the web wall 27 and the side walls 25, 26, substantially coincides with the length of the web wall 27.
  • the bent edges 40, 41 terminate at the cutouts 30, 31 to allow free passage for the bellcrank.
  • the bent-over edges 40, 41 can also be formed into the region of the cutouts 30, 31 and adapted to the length of the side walls 25, 26. They may be pressed flat against the side walls 25, 26 in the cutouts 30, 31 if necessary.
  • the edges 40, 41 preferably have a constant width, ie they form an outline rectangular strip.
  • the edges 40, 41 may be formed differently high. For example, it is possible that the height of the edges 40, 41 substantially coincides with the height of the side walls 25, 26. If desired, it is possible to deviate from this form.
  • To the shaft drive linkage 11 also includes a further coupling rod 42 which connects the rocker 8 with the angle lever 17.
  • the coupling rod 42 may also be otherwise connected to the shaft drive linkage. It is essentially designed like the coupling rod 12.
  • the stem drive linkage works as follows:
  • the rocker 8 performs the indicated in Figure 1 oscillating motion. This is transmitted via the coupling rod 42 to the angle lever 17, which thus performs a swinging about the center of rotation 19 back and forth movement.
  • the coupling rod 12 transmits tensile and compressive forces from the arm 15 to the arm 16 and vice versa. It moves mainly in the horizontal direction and, as the arrow 43 shows, with a certain vertical component.
  • a transverse component (in Figure 1 perpendicular to the plane) does not occur.
  • the coupling rod 12 is connected to the arms 15, 16 via pivot hinges whose hinge axes are oriented parallel to each other, transverse to the coupling rod 12 in Figure 1 perpendicular to the plane.
  • the buckling resistance of the coupling rod 12 is sufficiently dimensioned to withstand such bending vibrations.
  • the edges 40, 41 are used for this purpose.
  • FIGS 5, 6 and 7 illustrate embodiments of the coupling rod 12, 42 in the form of coupling rods 112, 212, 312, which are largely identical to the above-described coupling rod 12, 42. They differ in size and position of the bent edges 140, 141, 240, 241, 340, 341. As can be seen on the coupling rod 112, it is advantageous if the edges 140, 141 have back portions 144, 145 which lie in a common plane lie and are oriented parallel to the web wall 127. These contribute significantly to the stiffening. Between the other folded parts of the edge 140, 141, a gap 146 may be formed, which remains open.
  • the spine portions 244, 245 may also be sized more generously so that the gap 246 becomes narrower.
  • the edges 240, 241 do not touch each other here either.
  • the gap 346 may be much further formed be, as Figure 7 on the coupling rod 312 and the edges 340, 341 illustrated.
  • FIG. 8 illustrates with the aid of a coupling rod 412
  • the edges 440, 441 can not only be bent over inward as above by 180 ° but also by 180 ° outwards.
  • the gap 446 extends over the entire inner width of the coupling rod 412, which substantially coincides with the width of the web wall 427.
  • This embodiment is suitable for embodiments in which the edges 440, 441 extend into the connection region at the ends 13, 14 and need not be cut away.
  • FIG. 9 illustrates on the basis of a coupling rod 512
  • the side walls 525, 526 can be arranged not only in parallel but also at an angle to one another and thus stand at an acute angle to the web wall 527.
  • the edges 540, 541 can, as shown, be turned inwards or else in the manner of FIGS. 5, 6 and 7 inwards. They can be bent by 180 ° or, as shown in FIG. 10 by way of the coupling rod 612, also by a smaller angle.
  • the edges of the edges 640, 641 are again unconnected. It creates a gap 646.
  • Figures 11 to 13 illustrate a class of tie rods 712, 812, 912 whose edges 740, 741, 840, 841, 940, 941 are formed flat with or without a gap.
  • the forming joint may extend parallel to the web wall 927, according to FIG. 11 at an acute angle to the web wall 727 or, according to FIG. 12, over a bending line and into the area of the side wall 825 be educated.
  • the parting line can be designed to remain free as an air gap. It can also have partial connections by rivets, spot welds or by an adhesive or damping material at part lengths or the full length.
  • FIG. 14 illustrates the embodiment of a shaft drive linkage 11 ', in which two coupling rods 12a, 12b are provided instead of the coupling rod 12 described so far. These are fundamentally identical to each other. They can differ in their lengths, if necessary. In addition to the angle levers 17, 18, a further angle lever 17a is provided, at which the ends of the coupling rods 12a, 12b are connected to each other and which contributes to the drive of the heald 1. Otherwise, the previous description applies accordingly.
  • pivotally mounted lugs 45 can serve around a turning center 44, which have a length matching the arm 15, 16.
  • connection piece 46 can be connected to the web wall 27 by appropriate mechanical connection means, such as rivets, screws, welds, splices or the like be. It may also extend through a cutout in the web wall into the space between the side walls and, as illustrated in FIG. 15, be held by rivets 47,48.
  • An inventive coupling rod 12, 42 for a shaft drive linkage 11 of a heald 1 is formed by an open sheet metal bending profile.
  • the cross section of this profile is uniform over the length of the coupling rod 12, 42 apart from their ends 13, 14.
  • Such a coupling rod 12, 42 allows the construction of shaft drive rods, which are inexpensive and lightweight and which are suitable for high speeds of the loom.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP07111313A 2006-07-19 2007-06-28 Mécanisme d'entraînement des lames et tige de couplage Withdrawn EP1881096A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006033328A DE102006033328B3 (de) 2006-07-19 2006-07-19 Schaftantriebsgetriebe und Koppelstange

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EP1881096A1 true EP1881096A1 (fr) 2008-01-23

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EP07111313A Withdrawn EP1881096A1 (fr) 2006-07-19 2007-06-28 Mécanisme d'entraînement des lames et tige de couplage

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Country Link
EP (1) EP1881096A1 (fr)
JP (1) JP2008031625A (fr)
CN (1) CN101109120A (fr)
DE (1) DE102006033328B3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2915754B1 (fr) 2007-05-04 2009-06-12 Staubli Faverges Sca Bielle pour systeme de tirage et metier a tisser comprenant une telle bielle.
DE102013225407A1 (de) 2013-12-10 2015-07-02 BSH Hausgeräte GmbH Haushaltsgerät mit einer bewegbaren Bedienblende

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524116A1 (fr) * 1991-07-15 1993-01-20 S.A. DES ETABLISSEMENTS STAUBLI (France) Mécanisme de tirage à leviers oscillants interposé entre une mécanique d'armure et les cadres de lisses d'un métier à tisser
EP0807702A1 (fr) * 1996-05-15 1997-11-19 Sulzer RàœTi Ag Dispositif pour fixer un corps et ratière avec un tel dispositif
WO2004057078A2 (fr) * 2002-12-19 2004-07-08 Groz-Beckert Kg Lame

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062367A1 (de) * 2004-12-13 2006-06-22 Picanol N.V. Übertragungsstange

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0524116A1 (fr) * 1991-07-15 1993-01-20 S.A. DES ETABLISSEMENTS STAUBLI (France) Mécanisme de tirage à leviers oscillants interposé entre une mécanique d'armure et les cadres de lisses d'un métier à tisser
EP0807702A1 (fr) * 1996-05-15 1997-11-19 Sulzer RàœTi Ag Dispositif pour fixer un corps et ratière avec un tel dispositif
WO2004057078A2 (fr) * 2002-12-19 2004-07-08 Groz-Beckert Kg Lame

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CN101109120A (zh) 2008-01-23
JP2008031625A (ja) 2008-02-14
DE102006033328B3 (de) 2007-11-29

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