EP0393469A1 - Verfahren zur Herstellung einer Düse für Luftwebmaschinen - Google Patents

Verfahren zur Herstellung einer Düse für Luftwebmaschinen Download PDF

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Publication number
EP0393469A1
EP0393469A1 EP90106798A EP90106798A EP0393469A1 EP 0393469 A1 EP0393469 A1 EP 0393469A1 EP 90106798 A EP90106798 A EP 90106798A EP 90106798 A EP90106798 A EP 90106798A EP 0393469 A1 EP0393469 A1 EP 0393469A1
Authority
EP
European Patent Office
Prior art keywords
steel rod
hole
gauged
manufacturing
cutting
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
EP90106798A
Other languages
English (en)
French (fr)
Other versions
EP0393469B1 (de
Inventor
Renato Granelli
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.)
Promatech SpA
Original Assignee
SOMET Societa Meccanica Tessile SpA
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 SOMET Societa Meccanica Tessile SpA filed Critical SOMET Societa Meccanica Tessile SpA
Priority to AT90106798T priority Critical patent/ATE94921T1/de
Publication of EP0393469A1 publication Critical patent/EP0393469A1/de
Application granted granted Critical
Publication of EP0393469B1 publication Critical patent/EP0393469B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
    • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
    • D03D47/3006—Construction of the nozzles
    • D03D47/302—Auxiliary nozzles

Definitions

  • the technique of shuttleless looms is known to include the so-­called air looms, wherein the weft yarn is drawn into the warp shed by a controlled air stream.
  • Said air stream is produced by a main blow nozzle - positioned at the yarn inlet end of the loom, and through which the weft yarn is fed - and is maintained and controlled by a plurality of secondary nozzles, each of which produces a so-called secondary jet.
  • a regular air stream is thus maintained in order to draw the weft yarn along the shed, starting from the yarn inlet end where the main blow nozzle is positioned, to the opposite end.
  • the object of the present invention is to propose a method al­lowing to produce secondary nozzles for air looms of extremely uniform characteristics, that is, with centesimal tolerances not only on the no­minal diameter, but also on all the other dimensions of the finished piece.
  • the manufacturing method according to the present invention which is essentially characterized in that it com strictlyprises the following steps: - cutting to size a steel rod and finishing its outer surface with centesimal tolerance; - drilling said steel rod with an axial dead hole of gauged di­mensions with centesimal tolerance; and - permanently deforming on a die said drilled steel rod, with flattening of at least one part thereof near its closed end and shaping of this end according to an inclined plane, and subsequently forming a gauged hole on said inclined end surface.
  • the method according to the invention hence comprises, in fur strictlyther detail, the following steps: - cutting a steel rod section and machining the same in a lathe to the required diameter D; - rounding off one of the section ends into a semispherical sha­pe (fig. 1) by means of a tool and subsequently a grinding wheel; - precision cutting the other end of said section to a set size (fig. 2); - forming a small tube closed at one end, by drilling (fig. 3) a hole along the axis of said rod section with a tool of diameter d- ⁇ and up to a depth p- ⁇ 1, and subsequently boring said axial hole (fig.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
EP90106798A 1989-04-21 1990-04-09 Verfahren zur Herstellung einer Düse für Luftwebmaschinen Expired - Lifetime EP0393469B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90106798T ATE94921T1 (de) 1989-04-21 1990-04-09 Verfahren zur herstellung einer duese fuer luftwebmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8920236A IT1230003B (it) 1989-04-21 1989-04-21 Procedimento di fabbricazione di un ugello per telaio di tessitura ad aria.
IT2023689 1989-04-21

Publications (2)

Publication Number Publication Date
EP0393469A1 true EP0393469A1 (de) 1990-10-24
EP0393469B1 EP0393469B1 (de) 1993-09-22

Family

ID=11165017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106798A Expired - Lifetime EP0393469B1 (de) 1989-04-21 1990-04-09 Verfahren zur Herstellung einer Düse für Luftwebmaschinen

Country Status (4)

Country Link
EP (1) EP0393469B1 (de)
AT (1) ATE94921T1 (de)
DE (1) DE69003431T2 (de)
IT (1) IT1230003B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19751354C1 (de) * 1997-11-20 1999-06-17 Dornier Gmbh Lindauer Hilfsblasdüse für eine Luftdüsenwebmaschine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2740108A1 (de) * 1976-09-07 1978-03-09 Rueti Ag Maschf Verfahren zur herstellung einer duese und verwendung der duese
EP0066012A1 (de) * 1981-06-01 1982-12-08 N.V. Weefautomaten Picanol Verfahren zur Herstellung von Hilfsdüsen für pneumatische Webmaschinen und derart hergestellte Hilfsdüsen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2740108A1 (de) * 1976-09-07 1978-03-09 Rueti Ag Maschf Verfahren zur herstellung einer duese und verwendung der duese
EP0066012A1 (de) * 1981-06-01 1982-12-08 N.V. Weefautomaten Picanol Verfahren zur Herstellung von Hilfsdüsen für pneumatische Webmaschinen und derart hergestellte Hilfsdüsen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19751354C1 (de) * 1997-11-20 1999-06-17 Dornier Gmbh Lindauer Hilfsblasdüse für eine Luftdüsenwebmaschine

Also Published As

Publication number Publication date
EP0393469B1 (de) 1993-09-22
DE69003431T2 (de) 1994-01-20
IT8920236A0 (it) 1989-04-21
DE69003431D1 (de) 1993-10-28
IT1230003B (it) 1991-09-20
ATE94921T1 (de) 1993-10-15

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