EP0120357A1 - Dispositif d'entraînement de l'aiguille d'insertion d'un métier à tisser des tissus métalliques - Google Patents

Dispositif d'entraînement de l'aiguille d'insertion d'un métier à tisser des tissus métalliques Download PDF

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Publication number
EP0120357A1
EP0120357A1 EP84102421A EP84102421A EP0120357A1 EP 0120357 A1 EP0120357 A1 EP 0120357A1 EP 84102421 A EP84102421 A EP 84102421A EP 84102421 A EP84102421 A EP 84102421A EP 0120357 A1 EP0120357 A1 EP 0120357A1
Authority
EP
European Patent Office
Prior art keywords
gear
picker head
actuator assembly
connecting rod
rods
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
Application number
EP84102421A
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German (de)
English (en)
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EP0120357B2 (fr
EP0120357B1 (fr
Inventor
Sergio Trinca Colonel
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.)
Trinca Colonel Silvio & Figlio Sergio SNC
Original Assignee
Trinca Colonel Silvio & Figlio Sergio SNC
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Application filed by Trinca Colonel Silvio & Figlio Sergio SNC filed Critical Trinca Colonel Silvio & Figlio Sergio SNC
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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
    • D03D47/271—Rapiers
    • 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

Definitions

  • This invention relates to an actuator assembly for a picker head in shuttleless looms for making wire cloth, particularly wire cloth for use in the manufacture of strainers, window screens, etc.
  • a picker head provided with a wire engaging latch and being reciprocated in timed relationship with the loom sley, is arranged to pass the weft wire through the shed formed by warp wires laid on mutually parallel planes, thereby weaving the wire cloth.
  • the picker head is passed, over an initial portion of its stroke distance, through the shed up to one side thereof, whereat it will pick up the weft wire by means of its openable end-bill; thereafter, the picker head is returned rapidly through the shed to take the weft wire in between the warp wires and thus weave, at each back and forth stroke, a portion of the cloth.
  • the picker head movement is implemented by means of complex camming mechanisms which receive their motion from the loom main drive via additional driving and timing members.
  • a further disadvantage shown by said mechanism was that adjustment for operative transition from one cloth type to a different, especially heavier grade, one involved a significant degree of complexity.
  • the task of this invention is to provide an improved actuator assembly and/or mechanism for a picker head in shuttleless looms for making wire cloth, which can move the picker head at a very high speed and in perfectly timed relationship with the motion of the loom sley at each operative phase of the picker head.
  • Still another object of the invention is to provide an assembly as indicated, which is construction- wise simple and reliable, and in particular which may be easily fitted on existing loom 5 without involving substantial alteration of the latter.
  • Yet another object of the invention is to provide an assembly as indicated, which can be easily manufactured from materials and on equipment commonly available on the market.
  • the actuator assembly for a picker head in shuttleless looms for making wire cloth is characterized in that it comprises a first gear made rotatively rigid with the crankshaft of said loom, a second gear supported rotatably on a gear holder element of plate-like, substantially rectangular configuration and in mesh engagement with said first gear, a washer element rotatably carried on said gear holder element at the opposite side thereof to the side oarrying said second gear, a first connecting rod element rigidly engaged at one end thereof with said plate-like supporting element and extending on a substantially vertical plane, a set of rods interconnected to define a substantially triangular arrangement and lying on a substantially vertical plane with two sides projecting by preset distances beyond the base of said triangle, the upper vertex of said triangle being pivoted to the other end of said first connecting rod element, the lower end of one of said projecting sides from said triangle being pivoted to an adjustment carriage, and the lower end of the other
  • Figure 7 is a fragmentary perspective view showing the gear case in a closed condition and the main connecting rod element deriving motion therefrom for the actuator assembly of this invention.
  • the actuator assembly for a picker head is generally designated with the reference numeral 1.
  • Said assembly comprises a gear case SC affixed to an abutment shoulder SP (Figure 1) on the loom, which gear case has a substantially cylindrical shape and contains a first spur gear 2 (Figure 2) keyed to one end of the loom crankshaft (not shown) and made rotatively rigid therewith, and a second spur gear 3 arranged to mesh with the first spur gear 2.
  • the first and second gears 2 and 3 are provided in a 1:1 drive ratio and are supported on a plate-like gear carrier or holder element 4 of substantially rectangular shape, which supports the gear 3 rigidly at its upper end, and the gear 2 rotatably at its lower end.
  • crankshaft (not shown) and cited gears 2 and 3 are associated with the plate-like element 4, and the gear 3 is in mesh engagement with the gear 2, thereby, on rotating the loom crankshaft, the plate-like element 4 and gear 3 are rotated, the gear 3 describing an epicycloid around the gear 2 with which it meshes.
  • a washer element is supported rigidly which, in one embodiment, may comprise an outer bearing race 8 and a center disk element 9, between the disk element 9 and bearing race 8 there being arranged, in a manner known per se, plural bearing balls 10.
  • the center disk element 9 has a slot or throughgoing aperture 11 formed therein which is sized and configured to receive one end of a first connecting rod element 13, as explained more ietailedly hereinafter.
  • the cover C is made pivotally rigid with the washer 7 and gear carrier plate 4, so that in operation said cover C will also turn.
  • the elongate slot 11, which may have an enlarged end to facilitate coupling to the connecting rod 13, is arranged to accommodate, fixedly but adjustably, one end of said first connecting rod element 13, the other end of which is engaged articulatedly with a set of rods, generally designated with the reference numeral 16, formed essentially by six rods which are interconnected to define a substantially triangular arrangement lying on an essentially vertical plane, with the actuator assembly in a fully assembled condition.
  • the rod set 16 comprise two rods 17 and 18 which have a substantially yoke-like configuration and define the base of said triangular configuration, two additional rods 20 and 21 defining one side of said triangular configuration, and two rods 22 and 23 defining the other side of the triangular configuration.
  • the yoke-like shape of the rods 20 and 21 causes them to meet each other at a substantially common end, e.g. their welded end indicated at 19, having a through connection hole 19'.
  • the common end 19 of the rod pair 20 and 21 projects farther than the two base rods 17 and 18, which have their common end located more to the rear than said end 19, the common end of the rods 17 and 18 being for example welded at said rearward location.
  • the rods 22 and 23 are substantially straight and parallel ones, and have coupling holes, not referenced herein, formed at each end, their respective lower ends also projecting from the aforementioned two base rods 17 and 18 defining the aforementioned triangular configuration.
  • the two base rods 17 and 18 in the triangular configuration set, or bow divider-like set are formed at their diverging ends with two slots or elongate longitudinal apertures, indicated at 24 and 25, respectively, for engaging adjustably therewith the pair of substantially parallel rods 22 and 23.
  • a throughgoing peg element, or threaded bolt, 26 which couples the two rods 22 and 23 together at their lower end portions, said peg being passed, as may be seen, through the slots 24 and 25.
  • the peg 26, which comprises as mentioned a releasable bolt, will enable, as is apparent, adjustment of the positions of the rods 23 and 24 in the slots 24 and 25, and such rods to be locked in the adjusted positions.
  • the actuator assembly of,this invention provides at least two adjustment points already, namely the aforementioned coupling of the first connecting rod 13 within the slot 11 and the coupling just described of the two rods 22 and 23 within the slots 24 and 25 of the rods 17 and 18. Said dual adjustment affords the faculty of synchronizing in an optimum fashion the motion transmitted by the actuator assembly of this invention with the motion of the other main loom members, and in particular the- sley.
  • the triangular rod arrangement described hereinabove is articulated at one side, respectively at the lower ends of the rods 22 and 23, to an adjustment carriage assembly, generally indicated at 30, shown more detailedly on an enlarged scale in Figure 6.
  • the lower ends of the rods 22 and 23 are made rigid, e.g. through a pin 32, with a pivot connection 33, which pivot connection 33 is made rigid with a plate-like element 34 of substantially C-like configuration, which plate-like element 34 is adapted for sliding movement in a longitudinal slot 35 formed in the lower body 36 of the carriage.
  • a handwheel element indicated at 37, is provided, the handwheel 37 being coupled to the sliding plate 34 through any suitable means, such as a worm and gear means, not shown.
  • the adjusting carriage assembly 30 is substantially rigid with the abutment SP of the loom, a plate-like element 40 being also made rigid, via a support 41 , with the abutment of the loom, the element 40 being provided to function as a stop for the sliding motion of the plate 34 associated with the adjusting carriage assembly 30.
  • the cited triangular rod arrangement, or bow divider-like arrangement are articulated, by conventional means, such as a pin 50, to a twin connecting rod element 51 which has its opposite end connected, through an additional pin element 52, for example to a picker head actuating carriage 54.
  • the carriage 54 is a part of an actuating assembly 55, which is available commercially and requires no further detailed discussion herein.
  • FIG. 3 shows the main connecting rod 1 3 in the fully backward position, which in accordance with the invention is a picker rest position.
  • the dimensions of the connecting rod 3 and rod mechanism as a whole should be selected to determine a desired rest interval for the picker head after drawing the weft wire through the shed.
  • the weft wire is engaged with the connecting rod in its fully extended position and the carriage 54 at the bottom travel limit of its back-and -forth stroke distance.
  • Said fully extended position of the connecting rod 13 is shown schematically in Figure 5.
  • the picker head is engaged with the weft wire.
  • the crankshaft is rotated further, the connecting rod element 13 starts its backward movement, thereby the picker head will be caused to move backward through the shed with the wire (not shown) engaged therewith, dimensions being selected such that the picker head is at a standstill over an angle of substantially 120-130 0 .
  • This standstill phase of the picker head constitutes an advantageous aspect of the invention, because during that phase, the weft wire may be cut in ideal conditions to yield an optimum cloth in a nearly finished condition.
  • the inventive actuator assembly enables, by virtue-of its peculiar construction, the picker head to hold the weft wire at all times under tension, which is effective to prevent the wire from becoming entangled and further improve the quality of the resulting wire cloth.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP84102421A 1983-03-11 1984-03-07 Dispositif d'entraînement de l'aiguille d'insertion d'un métier à tisser des tissus métalliques Expired - Lifetime EP0120357B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2004983 1983-03-11
IT20049/83A IT1160805B (it) 1983-03-11 1983-03-11 Gruppo di azionamento della lancia di inserimento della trama in macchine per la produzione di tela metallica

Publications (3)

Publication Number Publication Date
EP0120357A1 true EP0120357A1 (fr) 1984-10-03
EP0120357B1 EP0120357B1 (fr) 1988-05-04
EP0120357B2 EP0120357B2 (fr) 1993-02-24

Family

ID=11163413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102421A Expired - Lifetime EP0120357B2 (fr) 1983-03-11 1984-03-07 Dispositif d'entraînement de l'aiguille d'insertion d'un métier à tisser des tissus métalliques

Country Status (3)

Country Link
EP (1) EP0120357B2 (fr)
DE (1) DE3470897D1 (fr)
IT (1) IT1160805B (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1563305A (en) * 1922-11-01 1925-11-24 F A Whitney Carriage Company Picker motion for looms
FR1465062A (fr) * 1965-01-22 1967-01-06 Perfectionnement aux mécanismes de commande des organes d'insertion de trame dans un métier multiple
GB1407632A (en) * 1972-03-06 1975-09-24 Mackie & Sons Ltd J Looms

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1563305A (en) * 1922-11-01 1925-11-24 F A Whitney Carriage Company Picker motion for looms
FR1465062A (fr) * 1965-01-22 1967-01-06 Perfectionnement aux mécanismes de commande des organes d'insertion de trame dans un métier multiple
GB1407632A (en) * 1972-03-06 1975-09-24 Mackie & Sons Ltd J Looms

Also Published As

Publication number Publication date
EP0120357B2 (fr) 1993-02-24
IT8320049A0 (it) 1983-03-11
DE3470897D1 (en) 1988-06-09
EP0120357B1 (fr) 1988-05-04
IT1160805B (it) 1987-03-11

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