EP0482001B1 - Heald frame with detachable corner joints - Google Patents

Heald frame with detachable corner joints Download PDF

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Publication number
EP0482001B1
EP0482001B1 EP90906833A EP90906833A EP0482001B1 EP 0482001 B1 EP0482001 B1 EP 0482001B1 EP 90906833 A EP90906833 A EP 90906833A EP 90906833 A EP90906833 A EP 90906833A EP 0482001 B1 EP0482001 B1 EP 0482001B1
Authority
EP
European Patent Office
Prior art keywords
projection
vibration damping
damping element
side support
heald frame
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.)
Expired - Lifetime
Application number
EP90906833A
Other languages
German (de)
French (fr)
Other versions
EP0482001A1 (en
Inventor
Martin Graf
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.)
Grob and Co AG
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Grob and Co AG
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Filing date
Publication date
Application filed by Grob and Co AG filed Critical Grob and Co AG
Publication of EP0482001A1 publication Critical patent/EP0482001A1/en
Application granted granted Critical
Publication of EP0482001B1 publication Critical patent/EP0482001B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • D03C9/0691—Arrangements of means for damping or noise reduction
    • 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
    • D03C9/065—Side stays
    • 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
    • D03C9/0666—Connection of frame parts
    • D03C9/0675—Corner connections between horizontal rods and side stays

Definitions

  • the invention relates to a heald frame with releasable corner connections between the side supports and the shaft rods consisting of hollow profiles, in the cavity of which a projection extending transversely from the side support engages in a pin-like manner with each corner connection and is clamped by means of a screw (see for example US-A-4 741 367).
  • the heald frames that oscillate in a weaving machine are known to be subjected to a very high load due to the constant load changes, and this is also becoming ever larger with the continuously improved weaving machines running at a higher number of revolutions, so that breakages caused by the high load on the side supports and in particular below the pin-shaped one Get ahead.
  • the heald frames are now preferably made of light metal, but this material has the property that the alternating bending strength of this material, plotted as a curve over the number of load changes, initially decreases steeper up to a certain value and then weaker but steadily further, which in contrast Steel is not the case from reaching a certain limit.
  • the material breakage due to the higher stress can occur at some point in view of the continuously decreasing curve mentioned above.
  • the heald frame has the features according to claim 1.
  • a projection 2 is fastened on one narrow side, which serves to connect the side support to a shaft rod, not shown, which is referred to as a corner connection.
  • the projection 2 serving to connect has a flat base part 2a extending in the direction of the longitudinal direction of the side support 1, which only has the purpose of increasing the area with which it bears against the vibration damping element 3 shown in cross-hatching. This is preferably connected by vulcanization to the side support 1 and to the projection 2. The larger this vibration damping element, the more the effect to be achieved is also better.
  • Fig. 4 shows the connection of a side support 1 with the shaft rod 4 of a heald frame, in the cavity 5 of which the projection 2 engages on the side support.
  • the connection is made by clamping by means of a clamping screw 6 pressed obliquely through the shaft rod 4 and against the chamfered upper edge of the projection 2, which is only shown with the center line.
  • the vibration damping element 3 is no longer than the projection 2 engaging in the cavity of the shaft rod 4.
  • a the overall length of the greater vibration damping element 3 is located between the side support 1 and the projection 2, which no longer lie against the vibration damping element with plane-parallel surfaces as in the previous examples.
  • the side support 1 and the projection 2 are in the examples according to FIGS. 5 and 6 in other words interlocking and between the boundary surfaces of the side support 1 and the projection 2 in the example according to FIG. 5 a V-shaped groove and in the example according to FIG. 6 a U-shaped groove is filled with the vibration damping element 3.
  • FIG. 7 and 8 show views from above of a side support 1 and the projection 2 connected to it, which is narrower than the side support in order to be able to be inserted into the cavity 5 of the shaft rod 4.
  • the vibration damping element 3 between them is the same width as the side support, which can have different profile shapes.
  • the side support 1 also serves as a guide, a U-shaped profile shape according to FIG. 7 including a guide rail or an L-shaped profile shape according to FIG. 8 being received on one side by a guide groove.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Springs (AREA)

Abstract

To provide a detachable corner joint on a heald frame a projection (2) arranged on the side stay (1) is used, clamped in the heald stave (4) shaped as a hollow profile of the heald frame by means of a locking screw (6). Between the side stay (1) and the projection (2) is arranged a vibration-dampening element (3) linked to the projection preferably by vulcanization. The vibration-dampening element (3) is composed of an elastomer and has a strip shape with the same width as the side stay (1). The side stay is thus linked with the heald stave (4) by the vibration-dampening element (3) at all corner joints and vibrations that are produced in particular when the machine turns at high speeds and which can lead to material breaks of the side stay are dampened.

Description

Die Erfindung betrifft einen Webschaft mit lösbaren Eckverbindungen zwischen den Seitenstützen und den aus Hohlprofilen bestehenden Schaftstäben, in deren Hohlraum bei jeder Eckverbindung ein von der Seitenstütze sich quer erstreckender Vorsprung zapfenartig eingreift und mittels einer Schraube festgeklemmt ist (siehe zum Beispiel US-A- 4 741 367).The invention relates to a heald frame with releasable corner connections between the side supports and the shaft rods consisting of hollow profiles, in the cavity of which a projection extending transversely from the side support engages in a pin-like manner with each corner connection and is clamped by means of a screw (see for example US-A-4 741 367).

Die in einer Webmaschine oszillierend bewegten Webschäfte sind bekanntlich durch die ständigen Lastwechsel einer sehr hohen Beanspruchung unterworfen und diese wird bei den ständig verbesserten und mit höherer Tourenzahl laufenden Webmaschinen ebenfalls ständig grösser, sodass durch die hohe Beanspruchung verursachte Brüche an den Seitenstützen und insbesondere unterhalb des zapfenförmigen Vorsprungs eintreten. Aus Gewichtsgründen werden die Webschäfte heute vorzugsweise aus Leichtmetall hergestellt, jedoch hat dieses Material die Eigenschaft, dass die Wechselbiegefestigkeit dieses Materials, aufgetragen als Kurve über der Anzahl Lastwechsel zunächst bis zu einem bestimmten Wert steiler und dann schwächer, aber stetig weiter abnimmt, was demgegenüber bei Stahl vom Erreichen eines bestimmten Grenzwertes an nicht der Fall ist. Bei Leichtmetall kann daher angesichts der vorstehend erwähnten stetig abfallenden Kurve irgendwann der Materialbruch infolge der höheren Beanspruchung eintreten.The heald frames that oscillate in a weaving machine are known to be subjected to a very high load due to the constant load changes, and this is also becoming ever larger with the continuously improved weaving machines running at a higher number of revolutions, so that breakages caused by the high load on the side supports and in particular below the pin-shaped one Get ahead. For reasons of weight, the heald frames are now preferably made of light metal, but this material has the property that the alternating bending strength of this material, plotted as a curve over the number of load changes, initially decreases steeper up to a certain value and then weaker but steadily further, which in contrast Steel is not the case from reaching a certain limit. In light metal, the material breakage due to the higher stress can occur at some point in view of the continuously decreasing curve mentioned above.

Der vorliegenden Erfindung lag daher die Aufgabe Zugrunde, Materialbrüche durch konstruktive Massnahmen zu verhindern. Zur Lösung dieser Aufgabe weist der Webschaft die Merkmale gemäss Anspruch 1 auf.The present invention was therefore based on the object of preventing material breaks through constructive measures. To achieve this task, the heald frame has the features according to claim 1.

Mit einem Schwingungsdämpfungselement in jeder Eckverbindung zwischen einer Seitenstütze und dem Schaftstab des Webschaftes wird den durch die häufigen Lastwechsel verursachten Schwingungen entgegengewirkt und die Kraftspitzen werden nicht mehr hart von einem zum anderen Teil übertragen.With a vibration damping element in each corner connection between a side support and the shaft rod of the heald frame, the vibrations caused by the frequent load changes are counteracted and the force peaks are no longer transmitted hard from one part to the other.

Verschiedene Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigen:

  • Fig. 1 und 2 Seitenansichten von zwei verschiedenen Ausführungsformen einer abgebrochen dargestellten Seitenstütze mit Vorsprung;
  • Fig. 3 die Seitenstütze gemäss Fig. 2 von der Schmalseite gesehen;
  • Fig. 4 die Eckverbindung eines Webschaftes, bestehend aus der Seitenstütze in einer weiteren Ausführungsform und dem abgebrochen dargestellten Schaftstab;
  • Fig. 5 und 6 Eckverbindungen mit abgewandelten Ausführungsformen der Seitenstütze und einem nicht geradlinigen Schwingungsdämpfungselement;
  • Fig. 7 und 8 zwei verschiedene Formen der Seitenstütze mit Vorsprung von oben gesehen.
Various exemplary embodiments of the invention are explained in more detail below with reference to the drawings. Show it:
  • Figures 1 and 2 side views of two different embodiments of a broken side support with projection.
  • FIG. 3 the side support according to FIG. 2 seen from the narrow side;
  • 4 shows the corner connection of a heald frame, consisting of the side support in a further embodiment and the shaft rod shown broken off;
  • 5 and 6 corner connections with modified embodiments of the side support and a non-rectilinear vibration damping element;
  • 7 and 8 two different forms of the side support with projection seen from above.

An der in Fig. 1 mit dem oberen Ende dargestellten Seitenstütze 1 ist an der einen Schmalseite ein Vorsprung 2 befestigt, der dazu dient, die Seitenstütze mit einem nicht dargestellten Schaftstab zu verbinden, was als Eckverbindung bezeichnet wird. Eine solche ist in Fig. 4 dargestellt. Der zum Verbinden dienende Vorsprung 2 weist bei dieser Ausführungsform einen in Richtung der Längsrichtung der Seitenstütze 1 sich erstreckenden flachen Basisteil 2a auf, der nur den Sinn hat, die Fläche zu vergrössern, mit der er gegen das in Kreuzschraffur dargestellte Schwingungsdämpfungselement 3 anliegt. Dieses ist in bevorzugter Weise durch Aufvulkanisieren mit der Seitenstütze 1 und mit dem Vorsprung 2 verbunden. Je grösser dieses Schwingungsdämpfungselement ist, desto besser ist auch die damit zu erzielende Wirkung. Da die durch den hochtourigen Maschinenlauf verursachten Schwingungen gedämpft werden, können auf diese Weise Brüche der Seitenstütze 1 vermieden werden, die vorwiegend in der Höhe der Unterkante des Vorsprungs 2 auftraten. Als Schwingungsdämpfungselement wird vorzugsweise ein Elastomer wie Gummi oder gummiartiges Material verwendet. Ebenso kann auch Polyurethan verwendet werden. Das Schwingungsdämpfungsmaterial in Form eines Streifens mit im wesentlichen gleicher Querschnittsgrösse kann ausser durch Aufvulkanisieren auch durch Kleben befestigt werden. In Fig. 2 ist der Vorsprung 2 in der senkrechten Richtung etwas kürzer und die Ausführung im übrigen gleich wie in Fig. 1, wobei aus der Ansicht gemäss Fig. 3 hervorgeht, dass der Basisteil 2a breiter ist als der eigentliche zum Verbinden mit dem Schaftstab dienende Vorsprung 2.On the side support 1 shown in FIG. 1 with the upper end, a projection 2 is fastened on one narrow side, which serves to connect the side support to a shaft rod, not shown, which is referred to as a corner connection. Such is shown in Fig. 4. In this embodiment, the projection 2 serving to connect has a flat base part 2a extending in the direction of the longitudinal direction of the side support 1, which only has the purpose of increasing the area with which it bears against the vibration damping element 3 shown in cross-hatching. This is preferably connected by vulcanization to the side support 1 and to the projection 2. The larger this vibration damping element, the more the effect to be achieved is also better. Since the vibrations caused by the high-speed machine running are damped, breaks in the side support 1 can be avoided in this way, which occurred mainly at the level of the lower edge of the projection 2. An elastomer such as rubber or rubber-like material is preferably used as the vibration damping element. Polyurethane can also be used. The vibration damping material in the form of a strip with essentially the same cross-sectional size can be attached by gluing in addition to vulcanization. 2, the projection 2 is somewhat shorter in the vertical direction and the design is otherwise the same as in FIG. 1, the view according to FIG. 3 showing that the base part 2a is wider than the actual one for connecting to the shaft rod serving lead 2.

Fig. 4 zeigt die Verbindung einer Seitenstütze 1 mit dem Schaftstab 4 eines Webschaftes, in dessen Hohlraum 5 der Vorsprung 2 an der Seitenstütze eingreift. Die Verbindung geschieht durch Festklemmen mittels einer schräg durch den Schaftstab 4 und gegen die abgeschrägte Oberkante des Vorsprungs 2 angedrückten Klemmschraube 6, die nur mit der Mittellinie dargestellt ist. Bei der in Fig. 4 dargestellten Grundform ist das Schwingungsdämpfungselement 3 nicht länger als der in den Hohlraum des Schaftstabs 4 eingreifende Vorsprung 2. Da wie eingangs erwähnt die erzielbare Wirkung mit einem wesentlich grösseren Schwingungsdämpfungselement besser ist, sind verschiedene Ausführungsformen möglich, bei denen ein in der Gesamtlänge grösseres Schwingungsdämpfungselement 3 sich zwischen der Seitenstütze 1 und dem Vorsprung 2 befindet, welche nicht mehr wie bei den vorherigen Beispielen mit planparallelen Flächen gegen das Schwingungs-Dämpfungselement anliegen. Die Seitenstütze 1 und der Vorsprung 2 sind bei den Beispielen gemäss Fig. 5 und 6 mit anderen Worten ineinandergreifend ausgebildet und zwischen den Begrenzungsflächen der Seitenstütze 1 und des Vorsprungs 2 ist bei dem Beispiel gemäss Fig. 5 eine V-förmige Rinne und bei dem Beispiel gemäss Fig. 6 eine U-förmige Rinne mit dem Schwingungsdämpfungselement 3 ausgefüllt.Fig. 4 shows the connection of a side support 1 with the shaft rod 4 of a heald frame, in the cavity 5 of which the projection 2 engages on the side support. The connection is made by clamping by means of a clamping screw 6 pressed obliquely through the shaft rod 4 and against the chamfered upper edge of the projection 2, which is only shown with the center line. In the basic form shown in FIG. 4, the vibration damping element 3 is no longer than the projection 2 engaging in the cavity of the shaft rod 4. Since, as mentioned at the beginning, the achievable effect is better with a substantially larger vibration damping element, various embodiments are possible in which a the overall length of the greater vibration damping element 3 is located between the side support 1 and the projection 2, which no longer lie against the vibration damping element with plane-parallel surfaces as in the previous examples. The side support 1 and the projection 2 are in the examples according to FIGS. 5 and 6 in other words interlocking and between the boundary surfaces of the side support 1 and the projection 2 in the example according to FIG. 5 a V-shaped groove and in the example according to FIG. 6 a U-shaped groove is filled with the vibration damping element 3.

Fig. 7 und 8 zeigen Ansichten von oben auf eine Seitenstütze 1 und den mit dieser verbundenen Vorsprung 2, der schmäler ist als die Seitenstütze, um in den Hohlraum 5 des Schaftstabes 4 hineingesteckt werden zu können. Das Schwingungsdämpfungselement 3 zwischen diesen ist gleich breit wie die Seitenstütze, welche verschiedene Profilformen aufweisen kann. Die Seitenstütze 1 dient gleichzeitig zur Führung, wobei eine U-förmige Profilform gemäss Fig. 7 eine Führungsschiene umfasst oder eine L-förmige Profilform gemäss Fig. 8 einseitig von einer Führungsnut aufgenommen wird.7 and 8 show views from above of a side support 1 and the projection 2 connected to it, which is narrower than the side support in order to be able to be inserted into the cavity 5 of the shaft rod 4. The vibration damping element 3 between them is the same width as the side support, which can have different profile shapes. The side support 1 also serves as a guide, a U-shaped profile shape according to FIG. 7 including a guide rail or an L-shaped profile shape according to FIG. 8 being received on one side by a guide groove.

Claims (5)

  1. Heald frame with detachable corner connections between the side supports and the frame staves consisting of hollow profiles and wherein, at each corner connection, a projection extending at right angles from the side support engages wedge-shapedly in the hollow thereof and are locked therein by means of a screw, characterized in that, between the side support (1) and the projection (2, 2a) serving for locking it, is disposed a vibration damping element (3) which is adhered to both of them and the working of which is unaffected by the tightening moment of the locking screw (6).
  2. Heald frame according to claim 1, characterized in that the vibration damping element (3) is a material strip from an elastomeric material such as rubber, a rubber-like material or polyurethane.
  3. Heald frame according to claim 1, characterized in that the vibration damping element (3) is adhered both to the side support (1) and the projection (2, 2a) by vulcanizing or gluing.
  4. Heald frame according to claim 1, characterized in that, in addition to the part engaging wedge-shapedly into the hollow (5) of the frame stave (4), the projection (2, 2a) comprises a flat base part (2a) for the adhesive connection extending in a direction parallel to the side support, with a correspondingly longer strip-shaped vibration damping element (3) extending over the entire base part surface.
  5. Heald frame according to claim 1, characterized in that the side support (1) and the projection (2) separated therefrom by the strip-shaped vibration damping element (3) are arranged to engage into one another, with their adhesive surfaces connected to the vibration damping element being identical in shape, and delimit for example a V or U-shaped groove filled up with the strip-shaped vibration damping element (3).
EP90906833A 1990-05-10 1990-05-10 Heald frame with detachable corner joints Expired - Lifetime EP0482001B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1990/000125 WO1991017291A1 (en) 1990-05-10 1990-05-10 Heald frame with detachable corner joints

Publications (2)

Publication Number Publication Date
EP0482001A1 EP0482001A1 (en) 1992-04-29
EP0482001B1 true EP0482001B1 (en) 1994-08-24

Family

ID=4546494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906833A Expired - Lifetime EP0482001B1 (en) 1990-05-10 1990-05-10 Heald frame with detachable corner joints

Country Status (7)

Country Link
US (1) US5249605A (en)
EP (1) EP0482001B1 (en)
JP (1) JP2756726B2 (en)
KR (1) KR920703894A (en)
CZ (1) CZ280785B6 (en)
DE (1) DE59006918D1 (en)
WO (1) WO1991017291A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101812755B (en) * 2009-12-17 2011-11-09 江苏万工科技集团有限公司 Device for controlling movement of harness frame

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4403923C1 (en) * 1994-02-08 1995-07-27 Grob & Co Ag Side support for a heald frame
FR2729975A1 (en) * 1995-01-26 1996-08-02 Icbt Diederichs Sa LOOM
IT1289352B1 (en) * 1996-12-18 1998-10-02 Nuova O M V Officine Meccanich REMOVABLE JOINT WITH INTERLOCKING FOR THE ELEMENTS OF A HOSE-HOLDER FRAME FOR WEAVING FRAMES
DE10349382B3 (en) * 2003-10-21 2005-06-09 Groz-Beckert Kg Weave in composite construction
DE10349381B4 (en) * 2003-10-21 2005-08-25 Groz-Beckert Kg Weave with new corner connector
DE102004047929B3 (en) * 2004-10-01 2005-12-01 Groz-Beckert Kg Improved Webschaft
DE102005029699B3 (en) * 2005-06-24 2007-02-08 Groz-Beckert Kg heald
DE102005029700B3 (en) * 2005-06-24 2006-10-12 Groz-Beckert Kg Side of heald frame for a loom has drive connection formed by a one-piece extension of the flat sides of a folded sheet metal part
EP2573240B1 (en) * 2011-09-20 2015-05-27 Groz-Beckert KG High speed safety heald shaft
CN103343414A (en) * 2013-07-22 2013-10-09 江苏万工科技集团有限公司 Heald frame bending mode control device

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US2981293A (en) * 1958-10-10 1961-04-25 Frohlich A G E Harness frame
US3895655A (en) * 1974-04-12 1975-07-22 Rockwell International Corp Harness frame for looms
US4349052A (en) * 1979-08-27 1982-09-14 Nankai Kogyo Kabushiki Kaisha Heald frame for looms
CH639147A5 (en) * 1979-09-26 1983-10-31 Grob & Co Ag WEBSITE STAFF.
CH643310A5 (en) * 1979-11-05 1984-05-30 Maruyama Mfg Co Heald frame
US4907810A (en) * 1986-03-21 1990-03-13 Whiteford Carlton L Racquet handle
JPS62170781U (en) * 1986-04-22 1987-10-29
US4687030A (en) * 1986-08-14 1987-08-18 Steel Heddle Manufacturing Co. Heddle frame for a high speed weaving machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101812755B (en) * 2009-12-17 2011-11-09 江苏万工科技集团有限公司 Device for controlling movement of harness frame

Also Published As

Publication number Publication date
DE59006918D1 (en) 1994-09-29
KR920703894A (en) 1992-12-18
EP0482001A1 (en) 1992-04-29
JP2756726B2 (en) 1998-05-25
CS9101347A2 (en) 1991-12-17
JPH04506838A (en) 1992-11-26
US5249605A (en) 1993-10-05
WO1991017291A1 (en) 1991-11-14
CZ280785B6 (en) 1996-04-17

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