EP0770722A1 - Schaftstab in Verbundbauweise für Webrahmen von Webmaschinen - Google Patents
Schaftstab in Verbundbauweise für Webrahmen von Webmaschinen Download PDFInfo
- Publication number
- EP0770722A1 EP0770722A1 EP96116603A EP96116603A EP0770722A1 EP 0770722 A1 EP0770722 A1 EP 0770722A1 EP 96116603 A EP96116603 A EP 96116603A EP 96116603 A EP96116603 A EP 96116603A EP 0770722 A1 EP0770722 A1 EP 0770722A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crosspiece
- section
- lower section
- composite material
- onto
- 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- Withdrawn
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C9/00—Healds; Heald frames
- D03C9/06—Heald frames
- D03C9/0608—Construction of frame parts
- D03C9/0616—Horizontal upper or lower rods
- D03C9/0625—Composition or used material
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C9/00—Healds; Heald frames
- D03C9/06—Heald frames
- D03C9/0608—Construction of frame parts
- D03C9/0616—Horizontal upper or lower rods
- D03C9/0633—Heald bars or their connection to other frame parts
Definitions
- the present invention applies to the construction of fittings for looms and, particularly, of heald frames; it concerns, more exactly, a crosspiece having a composite structure to be used in the construction of heald frames for looms.
- Heald frames are devices mounted in looms to obtain - through their reciprocating motion on a vertical or horizontal plane, perpendicular to the weaving plane - the movement of groups of warp yarns according to a preset weaving pattern.
- the heald frames comprise two side members, acting as guides for the reciprocating sliding motion of the frame, and two crosspieces into which are inserted the healds (thin rods of steel, or of other materials), each holding a warp yarn.
- the side members and crosspieces are fixed together at right angles, in correspondence of the four corners of the frame, in a perfectly rigid manner - so as to prevent any possible deformation of the frame during weaving - and, at the same time, easy to disassemble, so as to allow inserting or removing the healds according to the number required for each weaving operation.
- heald frames With the improvement of the performances of modern looms, specially the increase of the weaving speed, it has become particularly important to reduce the weight of the masses moving with a reciprocating motion, and thus also the weight of the heald frames.
- the present trend is to thus use, for the construction of heald frames, lighter and lighter materials, such as aluminium, light alloys and composite materials, seeking to reach the best compromise between the characteristics of lightness and those of resistance to mechanical stresses.
- the object of the present invention is to thus supply a crosspiece structure which is very light and has, at the same time, high characteristics of rigidity and resistance to mechanical stresses. Said object is reached by means of a crosspiece of composite structure for the construction of heald frames for looms, formed by an upper section and by a lower section between which there is interposed a flat body having a honeycomb structure, said three elements being kept mutually connected by a pair of thin sidewalls of composite material, glued onto the side surfaces of said elements.
- the crosspiece of the present invention comprises the following main elements:
- this latter also comprises, close to its bottom end, a longitudinal ribbing 4a for fixing means to guide the healds; such means essentially consist of a steel plate 6, preferably welded to said ribbing 4a of the lower section 4.
- the plate 6 is meant to form, with the section 4, a track to support and guide the hook end of the healds L, which place themselves astride of its upper edge.
- the plate 6 has a depressed zone, or longitudinal groove 6a, on its side facing the section 4.
- the aforedescribed structure has excellent mechanical characteristics, particularly a high rigidity and capability to dampen vibrations and noise; its weight is moreover reduced, even as far as 20%, in respect of the weight of an extruded aluminium monolithic bar of the same size.
- the lower section 4 of fig. 1 acting as support for the healds, is replaced by a section 7 consisting - like the upper section 1 - of extruded aluminium or of another light and highly resisting material. Also this section 7 comprises partially depressed side surfaces 7a ending into shoulders 7b - with a symmetrical arrangement in respect of the depressed surfaces 1a and shoulders 1b of the upper section 1 - to allow glueing thereon the sidewalls 2 and 3.
- the section 7 equally comprises a ribbing 8, obtained directly by extrusion, to fix thereon the already described guide means in the form of a plate 6.
- the plate 6 is fixed by riveting, or by riveted pins, or else by glueing.
- a cavity 7c is finally formed into the section 7, acting as guide for a steel block (not shown) positioned therein, said block comprising threaded holes for fixing an intermediate tie rod for the heald frame.
- This embodiment of the crosspiece is therefore particularly suited for frames of great width.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
- Woven Fabrics (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI950711U | 1995-10-16 | ||
ITMI950711 IT237225Y1 (it) | 1995-10-16 | 1995-10-16 | Traversa a struttura composita per quadri porta-licci di telai ditessitura |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0770722A1 true EP0770722A1 (de) | 1997-05-02 |
Family
ID=11371251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96116603A Withdrawn EP0770722A1 (de) | 1995-10-16 | 1996-10-16 | Schaftstab in Verbundbauweise für Webrahmen von Webmaschinen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0770722A1 (de) |
IT (1) | IT237225Y1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1170409A1 (de) * | 2000-07-06 | 2002-01-09 | Nuova O.M.V. Officine Meccaniche Vilminore S.r.l. | Mehrkomponentenquerträger für rauscharme Schaftrahmen in Webmaschinen |
FR2831558A1 (fr) * | 2001-10-31 | 2003-05-02 | Grob Horgen Ag | Corps de support pour une lame et lame munie de celui-ci |
EP1498521A2 (de) * | 2003-07-18 | 2005-01-19 | Staubli Faverges | Schaftrahmen und Webmaschine versehen mit mindestens einem solchen Schaftrahmen |
CN112048800A (zh) * | 2019-06-07 | 2020-12-08 | 意达股份公司 | 刚度提高的用于织机的综框横杆 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4404995A (en) * | 1981-04-10 | 1983-09-20 | Steel Heddle Manufacturing Co. | Heddle frame assembly construction and method |
US4484604A (en) * | 1983-09-06 | 1984-11-27 | Steel Heddle Mfg. Co. | Composite dual-face heddle frame slat |
US4633916A (en) * | 1985-06-24 | 1987-01-06 | Rast John L | Roll-formed shear-resistant frame slat |
EP0302798A2 (de) * | 1987-08-06 | 1989-02-08 | Steel Heddle Mfg. Co. | Längsbalken eines Litzenrahmens und Litze |
EP0457210A1 (de) * | 1990-05-15 | 1991-11-21 | Elio Carrara | Balken aus Verbundwerkstoff für Webschäfte |
EP0496054A1 (de) * | 1991-01-19 | 1992-07-29 | GROB & CO. AKTIENGESELLSCHAFT | Schaftstab für einen Webschaft |
EP0504102A1 (de) * | 1991-03-14 | 1992-09-16 | Gebrüder Sulzer Aktiengesellschaft | Schaftstab und Schaftrahmen für eine Webmaschine |
-
1995
- 1995-10-16 IT ITMI950711 patent/IT237225Y1/it active IP Right Grant
-
1996
- 1996-10-16 EP EP96116603A patent/EP0770722A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4404995A (en) * | 1981-04-10 | 1983-09-20 | Steel Heddle Manufacturing Co. | Heddle frame assembly construction and method |
US4484604A (en) * | 1983-09-06 | 1984-11-27 | Steel Heddle Mfg. Co. | Composite dual-face heddle frame slat |
US4633916A (en) * | 1985-06-24 | 1987-01-06 | Rast John L | Roll-formed shear-resistant frame slat |
EP0302798A2 (de) * | 1987-08-06 | 1989-02-08 | Steel Heddle Mfg. Co. | Längsbalken eines Litzenrahmens und Litze |
EP0457210A1 (de) * | 1990-05-15 | 1991-11-21 | Elio Carrara | Balken aus Verbundwerkstoff für Webschäfte |
EP0496054A1 (de) * | 1991-01-19 | 1992-07-29 | GROB & CO. AKTIENGESELLSCHAFT | Schaftstab für einen Webschaft |
EP0504102A1 (de) * | 1991-03-14 | 1992-09-16 | Gebrüder Sulzer Aktiengesellschaft | Schaftstab und Schaftrahmen für eine Webmaschine |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1170409A1 (de) * | 2000-07-06 | 2002-01-09 | Nuova O.M.V. Officine Meccaniche Vilminore S.r.l. | Mehrkomponentenquerträger für rauscharme Schaftrahmen in Webmaschinen |
US6446676B1 (en) | 2000-07-06 | 2002-09-10 | Nuova O.M.V. S.R.L. | Multicomponent cross-piece for low-noise heddle frames in weaving looms |
FR2831558A1 (fr) * | 2001-10-31 | 2003-05-02 | Grob Horgen Ag | Corps de support pour une lame et lame munie de celui-ci |
BE1016042A5 (fr) * | 2001-10-31 | 2006-02-07 | Grob Horgen Ag | Corps de support pour une lame et lame munie de celui-ci. |
EP1498521A2 (de) * | 2003-07-18 | 2005-01-19 | Staubli Faverges | Schaftrahmen und Webmaschine versehen mit mindestens einem solchen Schaftrahmen |
EP1498521A3 (de) * | 2003-07-18 | 2005-04-13 | Staubli Faverges | Schaftrahmen und Webmaschine versehen mit mindestens einem solchen Schaftrahmen |
CN1576420B (zh) * | 2003-07-18 | 2011-02-02 | 施托布利法韦日公司 | 综框以及装备有至少一个这种综框的织机 |
CN112048800A (zh) * | 2019-06-07 | 2020-12-08 | 意达股份公司 | 刚度提高的用于织机的综框横杆 |
Also Published As
Publication number | Publication date |
---|---|
ITMI950711V0 (it) | 1995-10-16 |
ITMI950711U1 (it) | 1997-04-16 |
IT237225Y1 (it) | 2000-09-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE ES FR IT LI |
|
17P | Request for examination filed |
Effective date: 19971028 |
|
17Q | First examination report despatched |
Effective date: 19990916 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20000328 |