EP0159124A1 - Klingenhalter und Klinge für Florgewebe - Google Patents

Klingenhalter und Klinge für Florgewebe Download PDF

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Publication number
EP0159124A1
EP0159124A1 EP19850301481 EP85301481A EP0159124A1 EP 0159124 A1 EP0159124 A1 EP 0159124A1 EP 19850301481 EP19850301481 EP 19850301481 EP 85301481 A EP85301481 A EP 85301481A EP 0159124 A1 EP0159124 A1 EP 0159124A1
Authority
EP
European Patent Office
Prior art keywords
blade
wire
holding portion
holder
tip
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
EP19850301481
Other languages
English (en)
French (fr)
Other versions
EP0159124B1 (de
Inventor
Peter Stockport Allsopp
Ian Swift Allsopp
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.)
WILLIAM B SWIFT Ltd
Original Assignee
WILLIAM B SWIFT 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 WILLIAM B SWIFT Ltd filed Critical WILLIAM B SWIFT Ltd
Publication of EP0159124A1 publication Critical patent/EP0159124A1/de
Application granted granted Critical
Publication of EP0159124B1 publication Critical patent/EP0159124B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D39/00—Pile-fabric looms
    • D03D39/10—Wire-tapestry looms, e.g. for weaving velvet or Brussels or Wilton carpets, the pile being formed over weftwise wires
    • D03D39/14—Construction of the pile wires, e.g. pile wires which cut

Definitions

  • the present invention is concerned with a pile wire blade holder for use in looms for weaving cut pile fabrics.
  • the blade is located at one end of the pile wire and includes a cutting edge inclined upwardly towards that end of the pile wire.
  • the pile wire is passed in one direction across the loom through the loops formed by the wire the cutting surface of the blade slices through the warp yarn loops located above the pile wire to produce the cut pile fabric.
  • the pile wire is constantly moved backwards and forwards across the loom at high speed and accordingly the pile wire is continually being subjected to vicious acceleration and deceleration which in turn causes the blade to exert to-and-fro forces in the blade holder during operation. Wear tends to occur in the blades and holders due to fretting, impact and friction.
  • the blade is prevented from moving beyond the end of the pile wire under rapid acceleration and cutting forces by engagement with an abutment of the pile wire.
  • the tip of the blade extends along the pile wire and is located in a socket portion formed actually in the pile wire. Engagement of the tip of the blade with the socket over an extremely small area prevents the blade from moving along the pile wire, under inertia forces, and also prevents the tip of the blade from rising up above the pile wire. The rising up of the tip of the blade could ruin a fabric as to action is impaired or terminated by complete loss of the blade from the blade holder.
  • the blade has to be made of extremely hard metal because of the tough cutting job which it has to perform.
  • the blade has been inserted by first locating the tip of the blade in a closed, angled socket and then pivoting the blade downwards about the socket. Engagement of the tip of the blade with the socket prevents the blade moving relative to the wire in one direction, but because of the relatively small area of contact between the tip and the socket these parts soon become worn with the consequence that the tip of the blade can rise above the wire resulting in the ruination of the fabric as previously referred to. Furthermore, where a dead end socket is provided, the socket can become clogged with dirt so that the tip of a new blade cannot be correctly located within the socket.
  • a pile wire blade holder comprises an elongate wire including a blade holding portion at one end arranged to hold a blade with the tip- of the blade extending along the wire away from the holding portion, the holding portion being arranged to co-operate with the blade to limit or prevent movement of the blade in either direction along the wire.
  • the holding portion is arranged to co-operate with the blade to limit or prevent movement of the blade in any direction relative to the movement of the wire.
  • a blade can be held within such a holder with the forces tending to move the blade in either direction along the wire being transferred between the holding portion and the blade rather than the tip and the wire.
  • the area of contact between the blade and the pile wire holder can be greatly increased from the area of contact in previous arrangements, for example the area can be increased by between fifteen and twenty times that previously used, with the result that the life of the holder is greatly increased.
  • the forces which are tending to move the blade along the holder in either direction are transfered by contact between the components at a region other than the tip of the blade, the sharp tip of the blade does not tend to erode itself, and also does not tend to wear away the actual wire and bridge itself.
  • a-uniform and repeatable location is provided for the blade by the blade holder.
  • the blade holder may be accurate, reliable and ultra lightweight.
  • the blade holding portion may be milled in order to provide the means whereby the holding portion is arranged to co-operate with the blade, and to provide a slot in the wire within which the tip of the blade is arranged to be located.
  • the milling of the holding portion and wire may permit the holder to have a compact and firm form.
  • the blade Upon insertion or removal of the blade into the holder, the blade may be slid in from, or out of the end of the holding portion in the opposite direction in which the wire extends.
  • a blade tip may be slid along the wire upon insertion of the blade, and pivotal movement about the blade tip, with its consequental adverse forces, can be avoided.
  • the blade holding portion may include a projection arranged to extend through an opening in the blade, and against which the blade is arranged to bear in order to limit or prevent movement in either, or any direction along the wire. This may further increase the area of . contact between the blade and the holder from that of prior proposals.
  • the holding portion may be arranged to co-operate with a blade to limit or prevent movement of the blade in a direction which would tend to move the tip of the blade away from the wire. Thus contact between the tip of the blade and the wire in order to prevent or limit movement of the blade away from the wire may be reduced or avoided to decrease the wear which occurs on the tip of the blade or on the wire in the region of the tip of the blade.
  • the holding portion may be arranged to co-operate with the blade to limit or prevent movement of the tip of the blade away from the wire by providing an abutment against which the blade can engage, the abutment being located between the projection and the tip of the blade.
  • the provision and location of the abutment provides a convenient way of limiting or preventing movement of the blade, and the area of contact of the abutment with the blade can be increased from the previous area of contact which was used to prevent this movement of the blade thus further increasing the life of the holder.
  • the wire may include an abutment or bridge arranged to engage with the tip of a blade whereby the tip of the blade is prevented from extending above the wire.
  • the abutment on the wire is particularly useful where the wire is of small diameter, as the wire may tend to flex during use, especially during cutting and the abutment can prevent this flexure from allowing the tip of the blade to be exposed as a result of this flexure.
  • the blade holder may include a channel or slot of greater height than the substantial part of the wire, the channel being located between the holding portion and that portion of the wire where cutting is arranged to begin to take place, the channel being arranged to receive a portion of the blade.
  • a blade may be supported by the walls of the channel between the holding portion and the tip of the blade in order to provide support for the blade in the direction transverse to the blade.
  • a pile wire blade holder comprises an elongate wire including a blade holding portion at one end arranged to hold a blade with the tip of the blade extending along, and within the wire away from the holding portion, the holding portion being arranged to co-operate with the blade to limit or prevent movement of the blade in either direction along the wire and to limit or prevent movement of the tip of the blade'away from the wire, the wire including an abutment against which the tip of a blade may engage whereby movement of the wire relative to the tip of the blade is prevented or limited.
  • a pile wire blade holder comprises an elongate wire including an enlarged blade holding portion at one end, the holder being arranged to receive a blade in the holding portion such that the tip of the blade extends along the wire, the holder including an enlarged channel portion located between the holding portion and that portion of the wire where the tip of the blade is arranged to be located, the blade being arranged to extend through the enlarged channel portion.
  • a pile wire blade holder includes a holding portion 10 arranged to receive and locate a blade 20 on the holder, and a wire 12 extending from the holding portion, only a part of which is shown.
  • the holding portion includes a recess, for example a milled recess 14 having a circular stud 16 of approximately 2 mm diameter projecting from the centre of the recess.
  • the recess may be now coined in order to form the stud.
  • the stud 16 may be located further forwards, on the edge of the recess to lessen the chance of dirt becoming trapped between the blade and the recess.
  • the stud 16 is arranged to extend through a hole 18 in the blade 20.
  • the blade 20 is arranged to extend through a milled opening 22 at the end of the holding portion, and within a slot 24 running along the wire 12.
  • the tip of the blade is arranged to be wholly located within the slot under a bridge 26 located towards the end of the slot.
  • the pile wire blade holder moves across the loom, forwards on insertion and backwards on withdrawal or cutting stroke, with approximately three insertions per minute, depending upon the number of wires in the set (usually around 20).
  • Each withdrawal and insertion i.e. two movements of the wire and therefore four attempted inertia movements of the blade within the holder
  • the wire which governs the loop size may be as small as 1 mm in diameter, and rarely above 2.7 x 1.2 mm rectangular section.
  • the stud 16 engages with the matching hole 18 in the blade over a substantial area to prevent or limit movement of the blade along either direction of the blade holder.
  • the stud 16 also prevents that portion of the blade from moving up or down.
  • pivotal movement of the blade about the stud towards the wire is prevented by the bottom of the blade abuting the base 28 of the holding portion and the bottom of the slot 24; pivotal movement in the opposite direction is prevented or limited by abutment of the top of the blade with the top surface 30 of the opening.
  • the holder includes a pair of parallel guides 36 which are accurately located above and below the stud in order to prevent or severely restrict pivotal movement of the blade about the stud. Accordingly, it can be seen that there is a considerable area of contact between the blade and the holder in order to resist movement of the blade relative to the holder in all directions, and thus wear between the two is dramatically reduced giving the blade holder a longer life.
  • the bridge 26 will engage with the tip 34 of the blade to prevent it from appearing above the slot 24.
  • the bridge may be optional and the omission of the bridge may be possible in certain sizes of wire and in certain circumstances.
  • the tip of the blade is pushed in from the end of the holder into and through the milled opening 22 until the hole 18 passes over the stud 16 and the blade clicks into the position shown in Figure 2, under its natural flexure.
  • the end of the blade which fits over the stud is held out of alignment with the extent of the slot 24 in order that the side 38 of the blade is pressed against the recess 14 surrounding the stud.
  • the biasing of the blade against the recess serves to hold the blade more firmly and help prevent dirt from becoming trapped between the blade and the recess.
  • the recess can be inclined (as shown) away from the direction in which the slot extends in order that the blade can contact the complete area of the recess.
  • the portion of the holding portion between the stud 16 and the opening 22 is completely open so that the hole 18 can be pushed off the stud and the blade slid rearwardly.
  • an additional hole 32 is provided in the blade.
  • the angle of the cutting blade relative to the extent of the wire may be of any angle suitable for various cutting conditions for instance for man-made fibre applications, the angle is generally between 5° and 20°.
  • the side walls of the opening 22 are extended at a height in excess of the body of the wire along the wire so that only a small amount of the blade projects above the wire at the cutting point thus giving further support to the blade in the direction transverse to the wire, this being especially important on very fine wires where strength is limited.
  • the difference between the embodiment shown in . Figure 3 and that of Figure 1 lies in the shape of the stud and the corresponding opening in the blade.
  • the stud 16A includes opposed upper and lower faces 38, an arcuate forward face 40 and a straight rear face 42.
  • the blade is shaped so that it is a close fit over the stud. The co-operation of the blade with the stud, in addition to preventing relative to and fro movement between the blade and holder also helps prevent relative pivotal movement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP19850301481 1984-03-24 1985-03-04 Klingenhalter und Klinge für Florgewebe Expired EP0159124B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8407721 1984-03-24
GB848407721A GB8407721D0 (en) 1984-03-24 1984-03-24 Blade holder

Publications (2)

Publication Number Publication Date
EP0159124A1 true EP0159124A1 (de) 1985-10-23
EP0159124B1 EP0159124B1 (de) 1989-05-24

Family

ID=10558651

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850301481 Expired EP0159124B1 (de) 1984-03-24 1985-03-04 Klingenhalter und Klinge für Florgewebe

Country Status (3)

Country Link
EP (1) EP0159124B1 (de)
DE (1) DE3570467D1 (de)
GB (1) GB8407721D0 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE624754C (de) * 1933-08-31 1936-01-27 Arthur Ruettgers Doppelwandige Florschneidrute
DE659113C (de) * 1936-05-31 1938-04-26 Carl Schlemper Fa Samtschneidrute mit auswechselbarem Messer
DE1164338B (de) * 1952-11-22 1964-02-27 James Neill & Company Ltd Klinge fuer Schneidruten von Rutenwebstuehlen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE624754C (de) * 1933-08-31 1936-01-27 Arthur Ruettgers Doppelwandige Florschneidrute
DE659113C (de) * 1936-05-31 1938-04-26 Carl Schlemper Fa Samtschneidrute mit auswechselbarem Messer
DE1164338B (de) * 1952-11-22 1964-02-27 James Neill & Company Ltd Klinge fuer Schneidruten von Rutenwebstuehlen

Also Published As

Publication number Publication date
DE3570467D1 (en) 1989-06-29
GB8407721D0 (en) 1984-05-02
EP0159124B1 (de) 1989-05-24

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