EP0331802A1 - Roue de guidage de ruban pour l'insertion de la trame dans un métier à tisser - Google Patents

Roue de guidage de ruban pour l'insertion de la trame dans un métier à tisser Download PDF

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Publication number
EP0331802A1
EP0331802A1 EP88120041A EP88120041A EP0331802A1 EP 0331802 A1 EP0331802 A1 EP 0331802A1 EP 88120041 A EP88120041 A EP 88120041A EP 88120041 A EP88120041 A EP 88120041A EP 0331802 A1 EP0331802 A1 EP 0331802A1
Authority
EP
European Patent Office
Prior art keywords
outer half
wheel
shells
shell
wheel according
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Withdrawn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
EP88120041A
Other languages
German (de)
English (en)
Inventor
Heiner Kern
Rudolf Heller
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.)
Rheinmetall Air Defence AG
Original Assignee
Contraves AG
Oerlikon Contraves 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 Contraves AG, Oerlikon Contraves AG filed Critical Contraves AG
Publication of EP0331802A1 publication Critical patent/EP0331802A1/fr
Withdrawn legal-status Critical Current

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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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • D03D47/275—Drive mechanisms
    • D03D47/276—Details or arrangement of sprocket wheels

Definitions

  • the present invention relates to a belt wheel for weft insertion on a weaving machine, which has a wheel hub and a wheel body connected to it with a wheel rim and a support part fastened to the wheel rim for receiving a weft insertion belt and has a fastening device for the weft insertion belt and can be arranged rotatably.
  • an oscillating belt wheel is provided for weft insertion on a weaving machine, the wheel body of which has a type of honeycomb structure with a plurality of cells arranged parallel to the wheel axis and on both sides of a circular one Plate closed and operatively connected to the wheel hub.
  • a known belt wheel of the type mentioned at the beginning e.g. CH-PS 629'895
  • the wheel body of which has a type of honeycomb structure with a plurality of cells arranged parallel to the wheel axis and on both sides of a circular one Plate closed and operatively connected to the wheel hub.
  • the wheel body has two outer half-shells which are at least essentially flat and are fastened on the one hand to the wheel hub and are arranged at least in a substantially symmetrical manner in the radial direction away from the wheel hub and also on the outside are conically inclined towards each other and on the other hand abut on their outer circumference with ring-like wall sections in a connecting plane which form the wheel rim.
  • the belt wheel according to the invention advantageously achieves a transverse or axial stiffness, by means of which the direction of force of the pressure of the weft insertion belt is distributed symmetrically over the outer half-shells. This increases the stiffening of the entire wheel body for the weft insertion belt.
  • the at least substantially symmetrical arrangement of the outer half-shells means that they are arranged symmetrically or essentially symmetrically.
  • the band wheel according to the invention advantageously has a simple construction, since the wheel body is formed in a simple manner from the two outer half-shells which, according to the invention, are at least essentially flat, ie flat or essentially flat.
  • band wheel according to the invention only one type of outer half-shell is required, ie the manufacture of two different embodiments or constructions of half-shells can be dispensed with, as a result of which a particularly simple production and thus construction of the band wheel according to the invention can be ensured. Due to the conical or conical outer half-shells, a symmetrical stiffness can be achieved and the direction of force of the pressure of the weft insertion tape on the belt wheel can be distributed symmetrically and thus evenly on the wheel.
  • the outer half-shells are preferably arranged at an angle of 5 ° to 25 ° relative to the connection plane. At the collision of the two outer half-shells in the connection plane, there may be a gap between the ring-like wall parts.
  • the ring-like wall parts can also overlap in or outside the connection plane.
  • the support part preferably serves as a fastening means for the outer half-shells, the gap being able to be bridged by the same.
  • the outer half-shells preferably lie against one another with their respective cone base in the connection plane.
  • a stiffening shell is preferably arranged between the outer half-shells, which is fastened to the wheel hub and extends diagonally outward from the one outer half-shell to the free end of the other opposite outer half-shell.
  • the stiffening shell advantageously crosses the connection plane and is inclined at an angle of 10 ° to 35 °.
  • the stiffening shell preferably extends over the shortest distance from one outer half shell to the free end of the other opposite Outer half shell.
  • the stiffening shell can abut the ring-like wall sections of the outer half-shells and, for example, be attached to the wall sections with the same.
  • the stiffening shell and the two outer half-shells can be fastened on the outside of the hub, the fastening being able to take place on a radially extending flange of the hub, which can extend perpendicular to the axis of rotation or also inclined with respect to the same.
  • the band wheel 1 has a wheel hub and a wheel body 3 with an outer wheel rim 4 and can with the wheel hub 2 are rotatably supported and driven about its axis of rotation A in both directions of rotation.
  • the wheel body 3 is formed from two outer half-shells 5 and 6, which are seated with an inner collar 7 and 8 in the wheel hub 2 and are fastened there.
  • the wheel hub 2 each has a flange 9 or 10, each with a contact surface 11 or 12 oriented transversely to the axis of rotation A for the outer half-shells 5 or 6, and recesses 13 and 14, in which the respective inner collar 7 or 8 engages.
  • the flat or flat outer half-shells 5 and 6 extend outward from the respective flange 9 or 10 as the base of the wheel hub 2 and are conically inclined in the direction of one another and in the direction of a connecting plane B in which the conical bases of the conical or conical Outer half-shells.
  • the outer half-shells 5 and 6 On their outer circumference, the outer half-shells 5 and 6 have ring-like, curved wall sections 15 and 16, which form the wheel rim 4 as an outer collar.
  • the wall sections 15 and 16 abut one another at the connecting plane B, a gap 17 being present at their collision.
  • Each outer half-shell 5 or 6 is arranged inclined at an angle ⁇ to the connecting plane B, which may be 15 °.
  • a support part 18 is arranged on the wheel rim 4, which serves to receive a weft insertion belt (not shown).
  • the support part 18 bridges the gap 17 and is fastened to the wall sections 15 and 16, so that the outer half-shells 5 and 6 are held together at this point.
  • a weft insertion tape for the A fastening device (not shown) is also provided on the wheel body 3 on the weft insertion on a weaving machine.
  • FIG. 2 in which parts that are the same as FIG. 1 have the same reference numbers, there is a belt wheel 20 with a wheel body 21, which in turn is fastened on the wheel hub 2.
  • Inside the wheel body 21 there is an inner stiffening shell 22 between the outer half-shells, which is fastened to the wheel hub 2 with an inner collar 23.
  • the stiffening shell 22 extends over the flange 10 and extends diagonally outward from it from one outer half shell 6 to the outer end 24 of the other outer half shell 5.
  • the stiffening shell 22 With a ring-like shell part 25, the stiffening shell 22 abuts the ring-like wall sections 15 and 16 of the outer half shells 5 and 6 and is connected to them there.
  • the shell part 25 is cranked in a suitable manner from the stiffening shell 22.
  • the outer half-shell 6 lies on the flange 10 above the stiffening shell 22 and in turn engages with its inner collar 8 in the recess 14 of the wheel hub 2.
  • the stiffening shell is inclined at an angle ⁇ to the connecting plane, which can be 19 °.
  • the transverse or axial stiffness of the wheel body 21 and thus of the entire band wheel 20 is increased in a particularly advantageous manner by the stiffening shell 22, so that this inner stiffening improves stiffening the tread for the weft insertion tape (not shown) is achieved, as already described above.
  • an indentation 32 is provided on the outer circumference of its wheel body 31, which indentation for receiving one end 33 of a Weft insertion tape 34 is provided, which can be held on the wheel body 31 by a fastening device 35.
  • the fastening device 35 is fastened to the wheel body 31 by means of a screw connection 36.
  • the indentation 32 is bridged by a filler 37.
  • the belt wheel 30 can be driven in both directions of rotation according to the double arrow C about the axis of rotation A.
  • the embodiment shown and described here according to Fig. 3 can also be carried out in the manner as e.g. in the CH-PS (corresponding to CH patent application No. (not yet known) dated March 9, 1988, entitled "Belt wheel for weft insertion on a weaving machine").
  • the annular wall parts of the wheel body 31 do not run continuously.
  • FIG. 4 which shows part of a band wheel 40, which in turn can be configured in its other parts like that according to FIG. 1 or 2, one end 41 of a weft insertion band 42 can be held on the outer circumference of a wheel body 43 by means of a screw 44 will.
  • the belt wheel 40 can be driven in accordance with the double arrow D around the axis of rotation A in both directions of rotation.
  • the diameter of the belt wheel can be made smaller than was previously possible with the known belt wheels. This will e.g. depending on the material and the turning radius, the moment of inertia and the moment of inertia or the like are significantly reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Woven Fabrics (AREA)
EP88120041A 1988-03-09 1988-12-01 Roue de guidage de ruban pour l'insertion de la trame dans un métier à tisser Withdrawn EP0331802A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH885/88 1988-03-09
CH88588 1988-03-09

Publications (1)

Publication Number Publication Date
EP0331802A1 true EP0331802A1 (fr) 1989-09-13

Family

ID=4197443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120041A Withdrawn EP0331802A1 (fr) 1988-03-09 1988-12-01 Roue de guidage de ruban pour l'insertion de la trame dans un métier à tisser

Country Status (3)

Country Link
US (1) US4865084A (fr)
EP (1) EP0331802A1 (fr)
JP (1) JPH01272849A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH679937A5 (en) * 1989-11-29 1992-05-15 Sulzer Ag Weft insertion strip oscillating drive wheel - has single wall section with corrugated profile near rim for lightweight and rigidity

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH629859A5 (en) * 1978-06-09 1982-05-14 Rueti Ag Maschf Band wheel on a weaving machine with an extraction of the weft thread from fixed bobbins
EP0191188A1 (fr) * 1985-02-11 1986-08-20 GebràœDer Sulzer Aktiengesellschaft Roue, plus particulièrement roue de guidage de ruban pour l'insertion de la trame dans un métier à tisser

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH567123A5 (fr) * 1974-03-11 1975-09-30 Rueti Ag Maschf

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH629859A5 (en) * 1978-06-09 1982-05-14 Rueti Ag Maschf Band wheel on a weaving machine with an extraction of the weft thread from fixed bobbins
EP0191188A1 (fr) * 1985-02-11 1986-08-20 GebràœDer Sulzer Aktiengesellschaft Roue, plus particulièrement roue de guidage de ruban pour l'insertion de la trame dans un métier à tisser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH679937A5 (en) * 1989-11-29 1992-05-15 Sulzer Ag Weft insertion strip oscillating drive wheel - has single wall section with corrugated profile near rim for lightweight and rigidity

Also Published As

Publication number Publication date
US4865084A (en) 1989-09-12
JPH01272849A (ja) 1989-10-31

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Effective date: 19910703