EP0341888A2 - Dispositif pour insérer un fil - Google Patents

Dispositif pour insérer un fil Download PDF

Info

Publication number
EP0341888A2
EP0341888A2 EP89304442A EP89304442A EP0341888A2 EP 0341888 A2 EP0341888 A2 EP 0341888A2 EP 89304442 A EP89304442 A EP 89304442A EP 89304442 A EP89304442 A EP 89304442A EP 0341888 A2 EP0341888 A2 EP 0341888A2
Authority
EP
European Patent Office
Prior art keywords
insertion tool
tool
wire
tubes
selectively operable
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Withdrawn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
EP89304442A
Other languages
German (de)
English (en)
Other versions
EP0341888A3 (fr
Inventor
Ralph Bracewell
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.)
Scapa Group Ltd
Original Assignee
Scapa Group Ltd
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 Scapa Group Ltd filed Critical Scapa Group Ltd
Publication of EP0341888A2 publication Critical patent/EP0341888A2/fr
Publication of EP0341888A3 publication Critical patent/EP0341888A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0054—Seams thereof

Definitions

  • the invention concerns the threading of wires, and has particular, though not exclusive, reference to the introduction of a lead-in wire into the interdigitated loops of the respective opposed ends of a flat-woven papermakers' fabric.
  • the lead-in wire is introduced by pushing such wire into the tunnel by hand. Difficulty is experienced in introducing the wire through the full fabric width, which width may amount to, say, ten metres, since frictional resistance to movement increases with progressive penetration and such resistance may give rise to permanent kinking of the wire which itself will make more difficult or will prevent further introduction of the wire.
  • the object of the present invention is to provide a means for use in introducing a lead-in wire which will allow of a more effective threading of the wire into the interdigitated loops than has been possible heretofore.
  • an insertion tool for movement of an elongate element in a tunnel formed by interdigitated loops comprising telescopingly engaged first and second tubular members, support means coaxially arranged therein and adapted to receive and support the said element, and selectively operable means on one said member adapted, upon actuation, to lock said member relative to the elongate element for movement thereof.
  • the first and second tubular members include respective telescopingly engaged tubes, the elongate element being a free but close fit within the innermost of said tubes.
  • the selectively operable means include a manually actuable cam profile engageable with an elongate element positioned within the outermost of said tubes.
  • an insertion tool 11 for introducing a lead-in wire 12 into the tunnel formed by the interdigitated loops of two opposed fabric ends comprises a cylindrical body part 13 having a through bore 14 thereto, a sleeve member 15 in sliding telescopic engagement with the body part 13 at one end thereof, and an actuator means 16 supported in the body part and engageable with a wire extending through the tool.
  • Body part 13 is approximately 2 cm in diameter and 20 cm in length, the bore 14 thereto being stepped to provide a central region 18 of small diameterbetween larger diameter inlet and outlet regions 19, 20, respectively.
  • the bore 14 is approximately 1.4 cm in diameter in inlet and outlet regions 19, 20, whilst such regions are respectively 5.7 and 8.5 cms in axial extent.
  • a slot 21 is provided in the wall of the body part, in register with the central region 18, to receive the actuator means 16, as will hereafter be described in greater detail.
  • a small diameter tube 22 having an inside diameter of approximately 0.175 cm is arranged coaxially with the body part, tube 22 being approximately 14 cm long and being of such outside diameter as to be a press or interference fit in the central region 18 of bore 14.
  • Tube 22 extends throughout the full axial extent of the central and outlet regions 18, 20 of bore 14 and the wall of said tube 22 is slotted, as at 23, in register with slot 21 to provide access for actuator means 16.
  • Sleeve member 15 is approximately 11 cm long and 1.1 cm outside diameter, the bore 24 to such member being stepped and there being a radially outwardly directed flange 25 at the inner end thereof which is clearance in the outlet region 20 of bore 14 and is freely slidable therein.
  • the bore 24 is of materially reduced diameter at the outer end of the member, as will hereafter be made apparent.
  • Sleeve member 15 is held captive in body part 13 by a bush 26 in screw-threaded engagement with the outer end of said body part, the bush 26 co-operating with flange 25 in limiting outward movement of member 15 relative to the body part.
  • a small diameter tube 27 is provided longitudinally of the sleeve member, tube 27 extending outwardly from such member at each end thereof by approximately 0.5 cm and being an interference fit with the reduced diameter part of bore 24 in sleeve member 15.
  • Tube 27 is clearance in tube 22, and has a bore such that the wire to be introduced is a close but free fit therein.
  • Actuator means 16 comprises a lever arm 28 mounted on a pin 29 extending transversely of the body part, lever arm 28 being located within slot 21 and being spring-loaded outwardly thereof about the pivot axis defined by pin 29 by a coil spring 30 located between tube 22 and the underside of the lever arm.
  • Lever arm 28 includes a cam profile 31 centred on pin 29, the cam profile being such that on pivotal movement of the lever arm 28 against the restraint of spring 30 said profile moves into the bore of tube 22 through slot 23 thus to reduce the transverse cross-section thereof.
  • An actuator button 32 is provided on lever arm 28.
  • sleeve member 15 is arranged coaxially with the bore 20 at the outlet end of the body part 13 with tube 27 carried by sleeve member 15 freely slidable within tube 22.
  • sleeve member 15 In use, and with a lead-in wire 12 threaded through the tool, sleeve member 15 is held in position at the fabric edge in alignment with the interdigitated loops, and the body part 13 is withdrawn relative to the sleeve member.
  • the wire 12 is locked to body part 13 by pivotting the lever arm 28 to bring cam profile 31 into contact with the wire through slot 23, and the body part 13 is then advanced relative to sleeve member 15, the wire thus being fed through tube 27 and into the tunnel formed by the interdigitated loops.
  • the body part On release of the actuator means 16, the body part is again withdrawn, tube 22 moving freely over tube 27 and over wire 12, further wire feed following from depression of the lever arm and advance of the body part.
  • the wire is closely supported in its movement towards and into the seam, and thus the possibility of kinking is eliminated. Furthermore, the pumping action by which the wire is progressively introduced into the seam offers a more uniform, reproducible and effective threading operation than has hitherto been possible.
  • telescoping tubes 22, 27 be provided whereby the lead-in wire is fully supported during progressive insertion into the seam, it may be found sufficient in some circumstances to provide a lesser degree of control and thus provide a bore to the sleeve member which is merely clearance on tube 22, tube 22 being dimensioned as to its cross section as to receive the wire as a free but close fit therein.
  • the through bore to the tool will be of such dimension as to allow free passage therethrough of the connecting sleeve.
  • the insertion tool of the invention is intended for use in the context of seaming papermachine clothing, and particularly dryer fabrics, it is thought to be of application in any context where support of the wire is of importance.

Landscapes

  • Paper (AREA)
  • Ropes Or Cables (AREA)
EP19890304442 1988-05-13 1989-05-03 Dispositif pour insérer un fil Withdrawn EP0341888A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8811354 1988-05-13
GB888811354A GB8811354D0 (en) 1988-05-13 1988-05-13 Threading of wires

Publications (2)

Publication Number Publication Date
EP0341888A2 true EP0341888A2 (fr) 1989-11-15
EP0341888A3 EP0341888A3 (fr) 1991-08-28

Family

ID=10636849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890304442 Withdrawn EP0341888A3 (fr) 1988-05-13 1989-05-03 Dispositif pour insérer un fil

Country Status (3)

Country Link
EP (1) EP0341888A3 (fr)
FI (1) FI891811L (fr)
GB (2) GB8811354D0 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2196678C1 (ru) * 2001-05-03 2003-01-20 Гнездилов Юрий Викторович Способ сварки деталей из термопластов и устройство для его осуществления

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA970760A (en) * 1973-05-24 1975-07-08 Maurice Gauthier Device for inserting a thread-like element in a duct, sleeve or the like
US3874061A (en) * 1973-05-30 1975-04-01 Cofpa Wire inserting device
SE396515B (sv) * 1975-12-15 1977-09-19 Elversson Tord Erland Verktyg for forflyttning av en langstreckt bojlig fjeder genom ihaliga passager
US4363167A (en) * 1980-08-11 1982-12-14 Amp Incorporated Method of terminating leading ends of a plurality of wires

Also Published As

Publication number Publication date
EP0341888A3 (fr) 1991-08-28
FI891811A7 (fi) 1989-11-14
FI891811L (fi) 1989-11-14
GB8910154D0 (en) 1989-06-21
GB8811354D0 (en) 1988-06-15
FI891811A0 (fi) 1989-04-17
GB2218939A (en) 1989-11-29

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