EP1953283A1 - Webblatt für Webmaschine und Herstellungsverfahren eines solchen Webblatts - Google Patents

Webblatt für Webmaschine und Herstellungsverfahren eines solchen Webblatts Download PDF

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Publication number
EP1953283A1
EP1953283A1 EP08356020A EP08356020A EP1953283A1 EP 1953283 A1 EP1953283 A1 EP 1953283A1 EP 08356020 A EP08356020 A EP 08356020A EP 08356020 A EP08356020 A EP 08356020A EP 1953283 A1 EP1953283 A1 EP 1953283A1
Authority
EP
European Patent Office
Prior art keywords
profile
tooth
comb
grooves
teeth
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
EP08356020A
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English (en)
French (fr)
Other versions
EP1953283B1 (de
Inventor
René Burnet
Franck Reuzeau
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.)
Staeubli Lyon SA
Original Assignee
Staeubli Lyon SA
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Publication date
Application filed by Staeubli Lyon SA filed Critical Staeubli Lyon SA
Publication of EP1953283A1 publication Critical patent/EP1953283A1/de
Application granted granted Critical
Publication of EP1953283B1 publication Critical patent/EP1953283B1/de
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • D03D49/62—Reeds mounted on slay
    • 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
    • D03D47/277—Guide mechanisms
    • D03D47/278—Guide mechanisms for pneumatic looms

Definitions

  • the present invention relates to a loom comb and a method of making such a comb.
  • the weft yarns In the field of weaving, the weft yarns must be pressed, shortly after insertion into the shed, against the fabric already produced, in order to confer a satisfactory regularity on the fabric produced.
  • a loom In the field of weaving, the weft yarns must be pressed, shortly after insertion into the shed, against the fabric already produced, in order to confer a satisfactory regularity on the fabric produced.
  • a comb mounted on a flap with a fast reciprocating movement allowing the comb to come beat the weft son.
  • Such a comb is formed by the juxtaposition and assembly of teeth, the space between each pair of adjacent teeth being intended for the passage of one or more warp son. It is necessary to have a precise positioning of the teeth relative to each other so as not to generate appearance defects in the fabric.
  • US-A-2 914 094 discloses a loom comb comprising, on a portion of the comb, a U-shaped member for receiving an end of each of the teeth of the comb portion.
  • the U-section member comprises two L-section portions each having, on the vertical bar of the L, grooves intended to be directed towards the inside of the U.
  • the relative positioning of the teeth is obtained by inserting the end of each tooth laterally in grooves of the L-section portions.
  • the teeth of the comb portion are removable and the two L-section portions are immobilized against the lateral edges of the teeth and one relative to the other. other by means of a bolt system. Therefore, the method of manufacturing this comb portion is relatively complex, and difficult to implement in an automated manner.
  • the invention more particularly intends to remedy by proposing a loom comb that can be obtained by an automated manufacturing method and for which the positioning of the teeth is precise and easily modifiable, with a view to a variation in the density of the teeth.
  • the subject of the invention is a comb of a loom, comprising at least one U-shaped cross-section profile and a row of teeth oriented transversely to the profile, one end of each tooth being received in the profile, characterized in that the profile has internal grooves formed on at least one of the two branches of the U, transversely to a longitudinal axis of the profile, and in that the aforesaid end of each tooth is inserted laterally into at least one groove of the profile, the comb comprising an adhesive material which secures the aforementioned end of each tooth with the profile.
  • the loom comb 1 shown in FIG. figure 1 is intended to equip a weaving loom type ribbon framer.
  • the comb 1 comprises a profile 3 with a U-shaped cross-section and a row of teeth 5 identical to each other, oriented substantially perpendicular to the profile 3.
  • the profile 3 is intended for the assembly of the teeth 5 and covers a first end 51 of each tooth 5.
  • the section 3 is monobloc and consists of a light metal alloy, in particular based on aluminum.
  • each tooth 5 is a blade of elongate and rectangular shape, cut in a flat sheet and polished.
  • Each tooth 5 is delimited by two longitudinal edges 52 and two transverse edges 54.
  • the two ends 51 and 55 of each tooth 5 respectively comprise a generally circular orifice 53 or 57, which is opening at the neighboring transverse edge 54.
  • each tooth 5 is received in the inner volume of the U-shaped section 3, the longitudinal edges 52 of the tooth 5 being disposed against the branches 31 of the profile 3, while the transverse edge 54 of the end 51 is arranged against the bottom 33 of the profile 3.
  • each tooth 5 is received in a pair of internal grooves 39 of the profile 3 formed vis-à-vis the two branches 31 of the U, substantially perpendicular to a longitudinal axis X 3 of the profile 3
  • each groove 39 is of V cross section, the two grooves 39 of a pair of grooves being identical.
  • the depth h of the grooves 39 may vary from one groove to another, as can the pitch p between two consecutive grooves 39 of one and the same branch 31 of the profile 3.
  • the figure 4 shows first and second sets of pairs of grooves 39 of the profile 3, in which the depth h of each groove 39 has respectively a first value h 1 and a second value h 2 , while the pitch p between two consecutive grooves 39 of a branch 31 has respectively a value p 1 in the first series and a value p 2 in the second series.
  • Each branch 31 of the profile 3 comprises an internal clearance 37 in the vicinity of the bottom 33 of the profile.
  • Each groove 39 of a branch 31 of the section 3 extends between this clearance 37 and the free edge 35 of the branch 31.
  • each pair of grooves 39 is adapted to the thickness of the tooth 5 which is inserted laterally into this pair of grooves, so that the bottom and the sides of the grooves 39 ensure the geometric positioning of the tooth
  • the end 51 of each tooth 5 is inserted into the pair of grooves 39 corresponding with or without play.
  • the ends 51 of the teeth 5, correctly positioned relative to the profile 3, are secured to the profile 3. by means of an adhesive 8 which, in the polymerized state, laterally closes the profile 3 in the vicinity of the ends 51 of the two extreme teeth of the comb 1.
  • the second ends 55 of the teeth 5 are assembled by means of a bead 7 made of a shape memory polymer material, of circular section, which passes through the orifices 57 of the ends 55 and ensures a correct alignment of the At their ends 55, for example, the constituent material of the bead 7 may be a cross-linked hydrophobic acrylic type shape-memory polymer, the glass transition temperature or softening temperature of which may be determined by means of FIG. adjustment of the composition of the monomers.
  • a method of manufacturing the comb 1 according to the invention comprises steps in which:
  • each pair of internal grooves 39 is machined in the branches 31 of the section 3, by means of a not shown tool comprising two opposite cutting edges having a V-shape.
  • This tool is introduced between the branches 31 of the profile. 3 in the direction of the arrow F 1 of the figure 3 , obtaining the grooves 39 that may require several passes of the tool inside the profile 3.
  • the tool is associated with a numerically controlled machine, it is possible to program the depth h of each groove 39 and the not p between two consecutive grooves 39 of the same branch 31 of the profile 3.
  • the machining grooves 39 can therefore be fully automated and performed with good productivity.
  • the clearances 37 of the branches 31 of the section 3 make it possible to define a flared zone inside the profile 3, which facilitates the evacuation of material chips generated during the machining of the grooves 39.
  • each tooth 5 When the grooves 39 have been machined in the branches 31 of the profile 3, the end 51 of each tooth 5, previously cut in a flat sheet metal according to the desired shape and polished, is inserted in a pair of grooves 39 corresponding to such that the longitudinal 52 and transverse edges 54 of the tooth 5 are respectively disposed against the branches 31, inside the grooves 39, and against the bottom 33 of the profile 3.
  • the insertion of each tooth 5 in a pair of grooves 39 is made with or without clearance.
  • the positioning of the tooth 5 in the section 3 is provided by pinching the tooth 5 between the branches 31 of the profile.
  • the V-shaped grooves 39 then allows a maintenance of the tooth 5 against the edges of the V-shaped grooves, without the need to clamp the tooth in the grooves.
  • the assembly formed by the profile 3 and the row of teeth 5 inserted into the grooves 39 is easily manipulated, in particular by robots, as part of a fully automated manufacturing process.
  • the manipulation of the assembly formed by the profile 3 and the teeth 5 inserted in the grooves 39 is all the easier as the teeth 5 are gripped in the grooves 39 and between the branches 31 of the profile 3.
  • the ends 55 of the teeth 5 are then capped by means of a second profile 9 with a U cross-section, shown in phantom lines only at the figure 2 and similar to the profile 3, inserting the end 55 of each tooth 5 in a corresponding pair of grooves of the second profile 9.
  • a correct spacing of the teeth 5 is ensured at their two ends 51 and 55.
  • a two-component adhesive 8 is then introduced into the section 3 at the orifice 53 of the end 51 of each tooth 5, by means of a cannula which circulates inside the aligned orifices 53.
  • a cannula which circulates inside the aligned orifices 53.
  • a cord 7 of polymeric shape memory material for example made of a crosslinked hydrophobic acrylic polymer as described above, is also introduced into the orifices 57 aligned with the ends 55 of the teeth 5. For its introduction into the orifices 57, the cord 7 is held in a compressed and flattened state so as to be easily insertable through the mouth of each orifice 57 opening at the transverse edge 54 associated with the end 55 of each tooth 5.
  • the assembly thus obtained which comprises the profile 3 comprising the bicomponent adhesive 8, the teeth 5, the compressed cord 7 and the second section 9, is then placed in an oven.
  • the polymerization of the two-component adhesive 8 is obtained, so that the teeth 5 are fixed rigidly inside the profile 3.
  • one obtains a volume expansion of the cord 7 of shape memory polymer material which regains its initial volume and immobilizes the end 55 of the teeth 5 respecting the spacing imposed by the second profile 9.
  • the ends 55 of the assembled teeth 5 are then extracted by means of cord 7 out of the second section, so as to obtain the comb 1 shown in FIG. figure 1 .
  • the cord 7 may be replaced by a cord made of any other material expandable under the effect of a heat treatment.
  • the bead is inserted in a compressed state inside the orifices 57 of the teeth 5, then its volume expansion is obtained by a suitable heat treatment so as to immobilize the ends 55 of the teeth 5 in the desired configuration.
  • the comb 1 obtained is light and compact. This results in easier assembly of the comb 1 on a loom, with a limited risk of breaking the warp son during assembly of the comb.
  • the teeth 5 are rigidly joined together and with the profile 3, which ensures good mechanical strength of the comb 1 in operation.
  • the loom comb 101 of this second embodiment is intended to equip an air jet type loom, wherein the weft yarns are driven by an air jet substantially perpendicular to the warp yarns.
  • the comb 101 comprises two sections 103 with a U-shaped cross-section, the openings of which are arranged facing one another, and a row of teeth 105, capped at their ends by the two sections 103 and oriented substantially perpendicular to each other. to these profiles.
  • Each tooth 105 of the comb 101 is an elongate blade delimited by two longitudinal edges 152 and two transverse edges 154.
  • One of the longitudinal edges 152 is substantially rectilinear, while the longitudinal edge 152 opposite has two protuberances 156 and 158, which define between them a notch 159 intended to be aligned with the notches 159 of the other teeth 105 for the passage of the entrainment air stream of the weft son.
  • the two sections 103 of the comb 101 are identical.
  • Each section 103 is monobloc and has internal grooves 139 formed opposite each other in pairs on the two branches 131A and 131B of the U, substantially perpendicular to a longitudinal axis X 103 of the section 103.
  • Each groove 139 of the branch 131A or 131B of a profile 103 extends between an internal clearance 137 and the respective free edge 135A or 135B of the branch considered.
  • the free edge 135A of the branch 131A of each profile 103 is further away from the bottom 133 of the profile than the free edge 135B of the branch 131 B.
  • the branch 131A has a height greater than that of the branch 131 B.
  • the grooves 139 of each section 103 have a V-shaped cross section and are arranged on each leg 131A or 131B in a similar manner to the first embodiment, the two grooves 139 of a pair of grooves being identical.
  • the depth h of the grooves 139 may vary from one groove to another, as well as the pitch p spacing between two grooves 139 consecutive.
  • Each end 151 or 155 of a tooth 105 is provided respectively with an orifice 153 or 157 disposed in the vicinity of a transverse edge 154 but not opening at this edge, in the alignment of the corresponding orifices of the other teeth 105.
  • the alignment of the orifices 153 and the alignment of the orifices 157 extend substantially parallel to the longitudinal axis X 103 of each profile 103.
  • a method of manufacturing the comb 101 according to this second embodiment of the invention comprises steps in which:
  • each pair of internal grooves 139 is machined in the branches 131A and 131B of each U-shaped section 103.
  • This machining is performed analogously to the first embodiment, by means of a tool comprising two cutting edges. opposite V-shaped and digitally controlled.
  • the two sections 103 are positioned vis-à-vis one with respect to the other in a template, the openings of the two U-shaped sections 103 facing one another.
  • each tooth 105 previously cut in a flat sheet metal according to the desired shape and treated by polishing, is then inserted into a groove 139 of the highest branch 131A of one of the profiles 103 and the end is inserted.
  • One of the ends 151 or 155 of each tooth 105 may also be slightly inserted in the groove 139 matched the branch 131B of the profile 103 corresponding for better maintenance of each tooth 105 between the two profiles.
  • the profiles 103 are brought closer to each other in the direction of the arrows F 2 of the figure 6 . This approximation continues until the transverse edges 154 of each tooth 105 comes against the bottom 133 of the profiles 103, the longitudinal edges 152 of each tooth 105 being received, in the vicinity of the ends 151 and 155, in a pair of grooves 139 of each profile 103.
  • the pre-positioning of the teeth 105 by relative to the profiles 103 and the approximation of the profiles 103 can be made fully automated manner.
  • the insertion of the teeth 105 in the grooves 139 is performed with or without clearance, the teeth 105 being clamped between the branches of the profiles 103 when a game is provided.
  • the assembly obtained at the end of this step which comprises the two sections 103 and the teeth 105, has good cohesion and can be stored or handled easily, which is advantageous in the context of a manufacturing process. automated.
  • a two-component adhesive is introduced into each of the profiles 103, respectively at the orifices 153 or 157 of each tooth 105, by means of a cannula which circulates inside the orifices 153 or 157 aligned with the teeth 105. Then, as in the first embodiment, the polymerization of the adhesive is obtained by heating in an oven.
  • a comb 1 or 101 of a loom according to the invention is light and compact, which is advantageous for its mounting on a loom.
  • Such a comb 1 or 101 also has good impact resistance thanks to the rigid attachment of the teeth 5 or 105 between them and with the profiles 3 or 103.
  • a comb in accordance with the invention can be obtained in a totally automated manner, the method of manufacturing such a comb also making it possible to obtain precise positioning of the teeth of the comb.
  • a comb 1 or 101 according to the invention may comprise teeth of different thicknesses, arranged at different spacings.
  • a comb according to the invention can thus be used with warp yarns of different types on a loom and / or makes it possible to vary the density of the warp yarns along the insertion axis of the weft yarns.
  • a comb according to the invention can be adapted to equip any type of loom, the geometry of the teeth and U-shaped profiles of the teeth being optimized according to the application.
  • the internal grooves of a U-shaped section of a comb according to the invention may not be perpendicular to the longitudinal axis of the profile but extend, more generally, in any other transverse direction relative to to this axis.
  • the end of a tooth of a comb according to the invention can also be inserted laterally into a single internal groove of the corresponding U-profile, which is then provided on only one branch of the profile.
  • the internal grooves of a U-shaped section may be of any suitable form different from the V-shape described above, the tool used for machining the grooves being adapted accordingly.
  • the tooth be clamped between the branches of the profile to ensure its positioning.
  • the tooth can be clamped in the groove or grooves, the pinching of the tooth between the branches of the profile is then not essential.
  • the internal grooves machining tool may have only one cutting edge, especially in the case where each tooth of the comb is inserted laterally into a single groove.
  • Such a tool with a single cutting edge can however also be used for machining pairs of grooves vis-à-vis the two branches of a U-profile, the grooves of each branch of the U-profile then being machined independently of each other.
  • the joining of the ends of the teeth with the corresponding profile can also be obtained by means of an adhesive material other than an adhesive two-component as described above, for example by means of an air-dry glue.
  • the transverse edge of each end of a tooth inserted in a profile may also not be in contact with the bottom of the section, but disposed at a distance from this bottom.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP08356020A 2007-02-05 2008-02-04 Webblatt für Webmaschine und Herstellungsverfahren eines solchen Webblatts Active EP1953283B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0700798A FR2912155B1 (fr) 2007-02-05 2007-02-05 Peigne de metier a tisser et procede de fabrication d'un tel peigne

Publications (2)

Publication Number Publication Date
EP1953283A1 true EP1953283A1 (de) 2008-08-06
EP1953283B1 EP1953283B1 (de) 2010-05-26

Family

ID=38561225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08356020A Active EP1953283B1 (de) 2007-02-05 2008-02-04 Webblatt für Webmaschine und Herstellungsverfahren eines solchen Webblatts

Country Status (6)

Country Link
EP (1) EP1953283B1 (de)
JP (1) JP2008240226A (de)
CN (1) CN101240479A (de)
AT (1) ATE469255T1 (de)
DE (1) DE602008001316D1 (de)
FR (1) FR2912155B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5364554B2 (ja) * 2009-12-11 2013-12-11 高山リード株式会社 筬
CN102619004A (zh) * 2012-04-23 2012-08-01 常州钢筘有限公司 喷气织机用异形筘整体异形筘片
CN105177841B (zh) * 2015-09-29 2017-05-17 浙江理工大学 一种用于喷气织机的异形筘及喷气织机
EP3425095B1 (de) * 2017-07-07 2020-09-30 Groz-Beckert KG Webblatt und verfahren zu dessen herstellung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE64004C (de) * W. WENN in Aachen, Steinkaulstrafse 23 Webeblatt
US2914094A (en) 1958-03-18 1959-11-24 Whitaker Reed Company Loom reed having removable dents
DE2127209A1 (de) 1971-06-02 1973-02-08 Theodor Wagner Bundkapsel fuer webeblaetter
US3746053A (en) * 1972-02-02 1973-07-17 Minnesota Mining & Mfg Loom reed
DE3623361A1 (de) * 1986-07-11 1988-01-21 Egelhaaf C C Fa Webblatt
US5029617A (en) * 1989-07-05 1991-07-09 Anderson Barbara C Reed with removable dents

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE64004C (de) * W. WENN in Aachen, Steinkaulstrafse 23 Webeblatt
US2914094A (en) 1958-03-18 1959-11-24 Whitaker Reed Company Loom reed having removable dents
DE2127209A1 (de) 1971-06-02 1973-02-08 Theodor Wagner Bundkapsel fuer webeblaetter
US3746053A (en) * 1972-02-02 1973-07-17 Minnesota Mining & Mfg Loom reed
DE3623361A1 (de) * 1986-07-11 1988-01-21 Egelhaaf C C Fa Webblatt
US5029617A (en) * 1989-07-05 1991-07-09 Anderson Barbara C Reed with removable dents

Also Published As

Publication number Publication date
CN101240479A (zh) 2008-08-13
DE602008001316D1 (de) 2010-07-08
FR2912155A1 (fr) 2008-08-08
EP1953283B1 (de) 2010-05-26
ATE469255T1 (de) 2010-06-15
JP2008240226A (ja) 2008-10-09
FR2912155B1 (fr) 2009-05-29

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