EP0075639B1 - Guideway for a dummy shuttle in the gripping device of a weaving loom - Google Patents

Guideway for a dummy shuttle in the gripping device of a weaving loom Download PDF

Info

Publication number
EP0075639B1
EP0075639B1 EP81810395A EP81810395A EP0075639B1 EP 0075639 B1 EP0075639 B1 EP 0075639B1 EP 81810395 A EP81810395 A EP 81810395A EP 81810395 A EP81810395 A EP 81810395A EP 0075639 B1 EP0075639 B1 EP 0075639B1
Authority
EP
European Patent Office
Prior art keywords
projectile
pawl
lock pawl
catch mechanism
ejection
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
Application number
EP81810395A
Other languages
German (de)
French (fr)
Other versions
EP0075639A1 (en
Inventor
Frantisek Jankovsky
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer AG
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to EP81810395A priority Critical patent/EP0075639B1/en
Priority to DE8181810395T priority patent/DE3167969D1/en
Priority to US06/408,925 priority patent/US4475575A/en
Priority to SU823488902A priority patent/SU1255060A3/en
Priority to JP57170800A priority patent/JPS5865038A/en
Publication of EP0075639A1 publication Critical patent/EP0075639A1/en
Application granted granted Critical
Publication of EP0075639B1 publication Critical patent/EP0075639B1/en
Expired legal-status Critical Current

Links

Images

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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/24—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick by gripper or dummy shuttle

Definitions

  • the invention relates to a guide arrangement for a weft insertion projectile in the catch mechanism of a weaving machine, which guide arrangement has a curved channel for guiding the projectiles arriving in the catch mechanism into a return transport device, furthermore at the end of the channel a pivotable pawl and an ejector which can be pushed into the curved channel and is guided in a straight guide for successive use Ejects each projectile while pivoting the pawl.
  • the invention has for its object the guide arrangement, which mainly the guide channel and all parts delimiting it and the design of the elements involved in the guide in the guide channel, e.g. the pawl and its storage, must be designed in such a way that the guide arrangement cannot exert any harmful effects on the projectiles carried therein.
  • the invention consists in that the outer wall of the curved channel has a recess designed in such a way that it enables the projectile to run parallel to the ejection direction when it hits the pawl in the locked position. Due to the special position of each projectile immediately before the ejector is ejected, it can be achieved that it hits a corresponding area of the projectile with a relatively large impact surface for the purpose of ejection. Since the projectile is in the direction of ejection and relatively large butting areas meet, the specific pressure of these areas is relatively low. The parts are protected and can be worn less quickly. Furthermore, it cannot happen that the projectile experiences a torque in the curved channel when the ejector strikes, for example in a position that runs obliquely to the ejection direction. This also enables a longer service life for the parts.
  • an ejector In the housing of the catch mechanism 1 of a weaving machine, an ejector, designated as a whole by 3, is arranged to be movable up and down in a straight guide 2 according to arrow 4.
  • a link 6 is articulated at 5, to which a drive lever 9, which can be pivoted back and forth about a fixed pivot point 8, engages at 7.
  • the ejector 3 has an elastic foot piece 16, e.g. made of rubber.
  • a gripper projectile 22 enters the catch mechanism 1 and is braked there.
  • a curved channel 23 of the catching mechanism there are some projectiles 22 which are successively guided according to arrow 24 - with simultaneous action of the centrifugal force in FIGS. 1, 2 to the left - to a return transport device 20 consisting of a roller chain 25 and various carriers 26.
  • the foremost projectile 22a is held by a pawl 28 which is arranged at the end 83 of the channel 23 and which can be pivoted about a fixed axis 29 (arrow 31).
  • the curved channel 23 has on its outer wall 23a a recess designated 51 as a whole in FIG. 3.
  • the outer wall 23a runs straight from point 52 to the left and forms a boundary surface 54 running at the same slope as the slope 53 of the projectile 22a.
  • the recess 51 contains an edge.
  • the outer wall 23a runs vertically at 56, which corresponds to the vertical wall 57 of the projectile 22a.
  • the outer wall 23a also runs vertically.
  • the recess 51 is designed in such a way that the foremost projectile 22a can move into the vertical position shown in FIG. 3 under the action of the centrifugal force directed to the left in FIG.
  • the projectile is thus erected and can find space in the recess 51 with the part 85 located at the top left in FIG. 3.
  • the two boundary surfaces 54, 56 of the recess 51 are expediently adapted in shape, position and with respect to the angle at the edge 55 as precisely as possible to the corresponding walls 53, 57 of the projectile 22a.
  • the pawl 28 has a bevel 58 which has the same inclination as the inclined wall 59 of the projectile 22a which is supported thereon and is erected vertically.
  • the ejector 3 After each shot entry, the ejector 3 is moved downward in a straight line in accordance with the direction of ejection according to arrow 40.
  • the foot piece 16 has a horizontal surface 61 at the bottom, which in the right area 61 a strikes a corresponding horizontal wall 62 of the projectile 22a.
  • the projectile Upon further downward movement, the projectile is pushed downward according to arrow 40 (FIG. 2), the pawl 28 being pivoted into the position 28a according to FIG. 2.
  • the pivoting takes place against the action of an elastic bushing 63 which is connected between the pawl 28 and the axle 29 and is vulcanized onto both parts 29, 28. Due to its spring action, the bush 63 strives to pivot the pawl into the position according to FIG. 1.
  • the position 22b of a projectile of the known guide arrangement is shown in dash-dot lines in FIG. 3. Due to the curved outer wall of the channel 23 in the region 65, the projectile 22b in FIG. 3 cannot assume a vertical position in this known embodiment. When the ejector 3 strikes, there is therefore a linear contact at 66, as a result of which the parts 16, 22 are subjected to relatively high wear.
  • the shape of the pawl 28b of the known embodiment is shown in dash-dot lines in FIG. 3.
  • the contact surface 68 of the known pawl 28b does not have the same inclination as the inclined wall 69 of the projectile 22b held by it. This results in a linear contact of the parts 22b, 28b at 71. This also results in increased wear on the pawl on the pawl as well as on the projectiles.
  • the vulcanized bushing 63 allows the pawl 28 to be elastically supported.
  • the two lower locking projections 30 of the pawl 28, which can be seen particularly in FIG. 4 and press against the projectile 22a, are thereby pressed uniformly against the projectile 22a regardless of any tolerance-related defects, which is particularly important in the ejection phase according to FIG. 2.
  • the projectile 22a is thereby held uniformly at its front and rear ends by the pawl 28. It experiences the same contact pressure from both approaches 30 as it moves past in FIG. 2. As a result, the projectile falls downward into the return transport device 20 in the horizontal position 22c indicated by dashed lines in FIG. 4.
  • an oblique ejection position 22d of the projectile is shown, as can occur in an undesired manner with this type of construction. Due to the fact that the pawl 28 is mounted on the axle 29 by means of a slide bearing 72 and a spring 32 is used for the resilient action, a difference R (FIG. 8) between that at the front can occur during the ejection phase according to FIG. 2 of the projectile 22a and the puncture slot S which adjusts at the rear. As a result, the oblique position 22d of the projectile according to FIG. 7 can occur, even when the parts are machined precisely under the smallest tolerances.
  • the pawl 28 contains a single stop screw 75 arranged in its center, which in the stop position according to FIGS. 1, 5 against a lower web 76 of a U, designated as a whole by 10, shaped that strikes a wall of the guide 2 for the ejector 3 in the catch mechanism housing 1 forming sheet.
  • the two lugs 30 of the pawl 28 are arranged on a carrier 77 which is pivotably arranged on a vertical axis 79 of the pawl by means of a slide bearing 78.
  • the pawl 28 is mounted without play in a slide bearing 74 and is under the action of the spring 32.
  • a bush corresponding to the bearing bush 63 is omitted here.
  • the freely pivotable carrier 77 makes it possible for the two piercing slots S, T at the beginning and end of the projectile 22a to be the same - even with relatively large tolerances of the parts - and for the projectile to be pushed into the return transport device 20 in the horizontal position 22c.
  • the inner wall of the curved channel 23 is designed in accordance with the line 23c indicated by dashed lines in FIG. 3.
  • the recess 51 can, for example, also be more or less rounded at 55. This is particularly worth considering if the projectile 22a also has a corresponding curvature. Possibly. the position 22a of the projectile may deviate slightly from the vertical position; in any case only to the extent that the ejector 3 can still strike the projectile flatly with its foot piece 16, so that the advantageous impact effect is maintained without the occurrence of a torque 72.
  • bearing bush 63 If the bearing bush 63 is not connected to the parts 28, 29 by vulcanization, it is only used for elastic storage and thus for self-centering the effect of the pawl 28 with respect to the projectile 22a to be held. A spring 32 must then be used for the spring action of the pawl.
  • the recess 51 is expediently adapted to the profile cross section. It can then e.g. run approximately according to line 51 a, which is indicated by two-dot chain lines in FIG. 3.
  • the contact surface 58 of the pawl 28 is also expediently adapted to the profile of the projectile 22 in such a way that the contact between the parts 58, 59 takes place over a large area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Description

Die Erfindung betrifft eine Führungsanordnung für ein Schusseintragsprojektil im Fangwerk einer Webmaschine, welche Führungsanordnung einen gekrümmten Kanal zur Führung der im Fangwerk eingetroffenen Projektile in eine Rücktransporteinrichtung, ferner am Kanalende eine schwenkbare Sperrklinke sowie einen in den gekrümmten Kanal einschiebbaren, in einer Geradführung geführten Ausstosser zum sukzessiven Ausstossen je eines Projektils unter Wegschwenkung der Sperrklinke aufweist.The invention relates to a guide arrangement for a weft insertion projectile in the catch mechanism of a weaving machine, which guide arrangement has a curved channel for guiding the projectiles arriving in the catch mechanism into a return transport device, furthermore at the end of the channel a pivotable pawl and an ejector which can be pushed into the curved channel and is guided in a straight guide for successive use Ejects each projectile while pivoting the pawl.

Bei einer bisherigen Führungsanordnung der genannten Art (EP-A Nr. 0019648) sind der gekrümmte Kanal sowie die ihn begrenzenden Teile im Hinblick auf den Durchlauf der Projektile nicht optimal gestaltet. Dadurch können leicht und nach relativ kurzer Zeit Abnützungen an den Wandungen des gekrümmten Kanals, am Ausstosser sowie an der Sperrklinke eintreten.In a previous guide arrangement of the type mentioned (EP-A No. 0019648), the curved channel and the parts delimiting it are not optimally designed with regard to the passage of the projectiles. As a result, wear on the walls of the curved channel, on the ejector and on the pawl can occur easily and after a relatively short time.

Der Erfindung liegt die Aufgabe zugrunde, die Führungsanordnung, welche hauptsächlich den Führungskanal und sämtliche ihn begrenzenden Teile sowie die Gestaltung der an der Führung in dem Führungskanal beteiligten Elemente, z.B. der Sperrklinke und ihrer Lagerung, umfasst, so auszubilden, dass die Führungsanordnung keine schädlichen Wirkungen auf die in ihr geführten Projektile auszuüben vermag.The invention has for its object the guide arrangement, which mainly the guide channel and all parts delimiting it and the design of the elements involved in the guide in the guide channel, e.g. the pawl and its storage, must be designed in such a way that the guide arrangement cannot exert any harmful effects on the projectiles carried therein.

Die Erfindung besteht darin, dass die äussere Wandung des gekrümmten Kanals eine so gestaltete Ausnehmung aufweist, dass durch sie dem Projektil - bei Auflaufen auf die in Sperrstellung befindliche Sperrklinke - eine parallel zur Ausstossrichtung verlaufende Position ermöglicht ist. Durch die besondere Position jedes Projektils unmittelbar vor dem Ausstoss durch den Ausstosser lässt sich erzielen, dass dieser mit einer relativ grossen Stossfläche auf eine zugehörige Fläche des Projektils zwecks Ausstoss aufschlägt. Da das Projektil in der Ausstossrichtung steht und relativ grosse Stossflächen aufeinandertreffen, wird der spezifische Druck dieser Flächen verhältnismässig gering. Die Teile werden geschont und können weniger rasch abgenützt werden. Überdies kann es nicht vorkommen, dass das Projektil etwa in einer schräg zur Ausstossrichtung verlaufenden Position beim Aufschlag des Ausstossers ein Drehmoment in dem gekrümmten Kanal erfährt. Auch hierdurch kann eine längere Lebensdauer der Teile erreicht werden.The invention consists in that the outer wall of the curved channel has a recess designed in such a way that it enables the projectile to run parallel to the ejection direction when it hits the pawl in the locked position. Due to the special position of each projectile immediately before the ejector is ejected, it can be achieved that it hits a corresponding area of the projectile with a relatively large impact surface for the purpose of ejection. Since the projectile is in the direction of ejection and relatively large butting areas meet, the specific pressure of these areas is relatively low. The parts are protected and can be worn less quickly. Furthermore, it cannot happen that the projectile experiences a torque in the curved channel when the ejector strikes, for example in a position that runs obliquely to the ejection direction. This also enables a longer service life for the parts.

Weitere Merkmale ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen in Verbindung mit der Zeichnung und den Ansprüchen.

  • Fig. 1 ist ein Vertikalschnitt durch eine erfindungsgemäss ausgebildete Führungsanordnung des Fangwerkes einer Webmaschine,
  • Fig. 2 zeigt die Teile nach Fig. 1 in einer anderen Position,
  • Fig. 3 veranschaulicht ein Detail aus Fig. 1 in grösserem Massstab,
  • Fig. 4 ist eine Vorderansicht nach Pfeil A in Fig.1,
  • Fig. 5 ein zugehöriger Schnitt nach Linie V-V in Fig. 4,
  • Fig. 6 ein Schnitt nach Linie VI-VI in Fig. 4,
  • Fig. 7 ist eine der Fig. 4 entsprechende Vorderansicht einer bekannten Anordnung zwecks Vergleich,
  • Fig. 8 ist eine zugehörige Draufsicht nach Pfeil B in Fig. 7,
  • Fig. 9 ist ein der Fig. 1 entsprechender Schnitt durch eine abgewandelte Bauart, und
  • Fig. 10 eine zugehörige Draufsicht nach Pfeil C in Fig. 9 auf die wesentlichen Teile.
Further features result from the following description of exemplary embodiments in conjunction with the drawing and the claims.
  • 1 is a vertical section through a guide arrangement of the catch mechanism of a weaving machine designed according to the invention,
  • Fig. 2 shows the parts of Fig. 1 in a different position,
  • 3 illustrates a detail from FIG. 1 on a larger scale,
  • 4 is a front view according to arrow A in FIG. 1,
  • 5 is an associated section along line VV in Fig. 4,
  • 6 shows a section along line VI-VI in FIG. 4,
  • 7 is a front view corresponding to FIG. 4 of a known arrangement for comparison,
  • 8 is an associated plan view according to arrow B in FIG. 7,
  • Fig. 9 is a section corresponding to FIG. 1 through a modified type, and
  • Fig. 10 is an associated plan view according to arrow C in Fig. 9 on the essential parts.

In dem Gehäuse des Fangwerkes 1 einer Webmaschine ist ein als Ganzes mit 3 bezeichneter Ausstosser entsprechend Pfeil 4 in einer Geradführung 2 auf und ab bewegbar angeordnet. An den Ausstosser 3 ist bei 5 ein Lenker 6 angelenkt, an den bei 7 ein um einen ortsfesten Drehpunkt 8 hin und her verschwenkbaren Antriebshebel 9 angreift. Am unteren Ende besitzt der Ausstosser 3 ein elastisches Fussstück 16, z.B. aus Gummi.In the housing of the catch mechanism 1 of a weaving machine, an ejector, designated as a whole by 3, is arranged to be movable up and down in a straight guide 2 according to arrow 4. At the ejector 3, a link 6 is articulated at 5, to which a drive lever 9, which can be pivoted back and forth about a fixed pivot point 8, engages at 7. At the lower end, the ejector 3 has an elastic foot piece 16, e.g. made of rubber.

Bei jedem Schusseintrag entlang der Schusslinie 21 gelangt ein Greiferprojektil 22 in das Fangwerk 1 und wird dort abgebremst. In einem gekrümmten Kanal 23 des Fangwerkes befinden sich einige Projektile 22, die sukzessive gemäss Pfeil 24 - unter gleichzeitiger Wirkung der Zentrifugalkraft in den Fig. 1, 2 nach links-zu einer aus einer Rollenkette25 und verschiedenen Mitnehmern 26 bestehenden Rücktransporteinrichtung 20 geführt werden. Das vorderste Projektil 22a wird durch eine am Ende 83 des Kanals 23 angeordnete Sperrklinke 28 gehalten, die um eine ortsfeste Achse 29 verschwenkbar ist (Pfeil 31).With each shot entry along the shot line 21, a gripper projectile 22 enters the catch mechanism 1 and is braked there. In a curved channel 23 of the catching mechanism there are some projectiles 22 which are successively guided according to arrow 24 - with simultaneous action of the centrifugal force in FIGS. 1, 2 to the left - to a return transport device 20 consisting of a roller chain 25 and various carriers 26. The foremost projectile 22a is held by a pawl 28 which is arranged at the end 83 of the channel 23 and which can be pivoted about a fixed axis 29 (arrow 31).

Wie besonders aus Fig. 3 ersichtlich ist, besitzt der gekrümmte Kanal 23 an seiner äusseren Wandung 23a eine in Fig. 3 als Ganzes mit 51 bezeichnete Ausnehmung. Die Aussenwandung 23a verläuft etwa vom Punkt 52 ab nach links geradlinig und bildet eine unter gleicher Schräge wie die Schräge 53 des Projektils 22a verlaufende Begrenzungsfläche 54. Bei 55 enthält die Ausnehmung 51 eine Kante. Nach ihr verläuft die äussere Wandung 23a bei 56 vertikal, was der senkrecht stehenden Wandung 57 des Projektils 22a entspricht. Am Ende 83 des Führungskanals 23 verläuft die Aussenwandung 23a ebenfalls vertikal. Die Ausnehmung 51 ist so gestaltet, dass das vorderste Projektil 22a unter der Einwirkung der in Fig. 3 nach links gerichteten Zentrifugalkraft sowie der ebenfalls nach links gerichteten Schubkraft des nachfolgenden Projektils 22 in die in Fig. 3 dargestellte, vertikale Position gelangen kann. Das Projektil wird also aufgerichtet und kann mit dem in Fig. 3 links oben befindlichen Teil 85 Platz in der Ausnehmung 51 finden. Zweckmässig sind die beiden Begrenzungsflächen 54, 56 der Ausnehmung 51 in Form, Position und hinsichtlich des Winkels bei der Kante 55 möglichst genau den entsprechenden Wandungen 53, 57 des Projektils 22a angepasst.As can be seen particularly from FIG. 3, the curved channel 23 has on its outer wall 23a a recess designated 51 as a whole in FIG. 3. The outer wall 23a runs straight from point 52 to the left and forms a boundary surface 54 running at the same slope as the slope 53 of the projectile 22a. At 55, the recess 51 contains an edge. According to it, the outer wall 23a runs vertically at 56, which corresponds to the vertical wall 57 of the projectile 22a. At the end 83 of the guide channel 23, the outer wall 23a also runs vertically. The recess 51 is designed in such a way that the foremost projectile 22a can move into the vertical position shown in FIG. 3 under the action of the centrifugal force directed to the left in FIG. 3 and the thrust force also directed to the left of the subsequent projectile 22. The projectile is thus erected and can find space in the recess 51 with the part 85 located at the top left in FIG. 3. The two boundary surfaces 54, 56 of the recess 51 are expediently adapted in shape, position and with respect to the angle at the edge 55 as precisely as possible to the corresponding walls 53, 57 of the projectile 22a.

Die Sperrklinke 28 besitzt eine Schrägung 58, die die gleiche Neigung besitzt wie die Schrägwandung 59 des darauf abgestützten, vertikal aufgerichteten Projektils 22a.The pawl 28 has a bevel 58 which has the same inclination as the inclined wall 59 of the projectile 22a which is supported thereon and is erected vertically.

Nach jedem Schusseintrag wird der Ausstosser 3 geradlinig entsprechend der Ausstossrichtung nach Pfeil 40 abwärts bewegt. Das Fussstück 16 besitzt unten eine horizontale Fläche 61, welche im rechten Bereich 61 a auf eine entsprechende horizontale Wandung 62 des Projektils 22a aufschlägt. Bei weiterer Abwärtsbewegung wird das Projektil gemäss Pfeil 40 abwärts gestossen (Fig. 2), wobei die Sperrklinke 28 in die Position 28a nach Fig. 2,verschwenkt wird. Die Verschwenkung erfolgt gegen die Wirkung einer zwischen der Sperrklinke 28 und der Achse 29 eingeschalteten, elastischen Büchse 63, die an beiden Teilen 29, 28 anvulkanisiert ist. Die Büchse 63 ist durch ihre Federwirkung bestrebt, die Sperrklinke in die Position nach Fig. 1 zu verschwenken.After each shot entry, the ejector 3 is moved downward in a straight line in accordance with the direction of ejection according to arrow 40. The foot piece 16 has a horizontal surface 61 at the bottom, which in the right area 61 a strikes a corresponding horizontal wall 62 of the projectile 22a. Upon further downward movement, the projectile is pushed downward according to arrow 40 (FIG. 2), the pawl 28 being pivoted into the position 28a according to FIG. 2. The pivoting takes place against the action of an elastic bushing 63 which is connected between the pawl 28 and the axle 29 and is vulcanized onto both parts 29, 28. Due to its spring action, the bush 63 strives to pivot the pawl into the position according to FIG. 1.

In Fig. 3 ist zum Vergleich die Position 22b eines Projektils der bekannten Führungsanordnung strichpunktiert eingezeichnet. Aufgrund der im Bereich 65 gekrümmten Aussenwandung des Kanals 23 kann bei dieser bekannten Ausführungsform das Projektil 22b in Fig. 3 keine vertikale Position einnehmen. Beim Aufschlag des Ausstossers 3 entsteht daher bei 66 eine linienförmige Berührung, wodurch die Teile 16, 22 relativ hoher Abnützung unterworfen werden.For comparison, the position 22b of a projectile of the known guide arrangement is shown in dash-dot lines in FIG. 3. Due to the curved outer wall of the channel 23 in the region 65, the projectile 22b in FIG. 3 cannot assume a vertical position in this known embodiment. When the ejector 3 strikes, there is therefore a linear contact at 66, as a result of which the parts 16, 22 are subjected to relatively high wear.

Ferner ist in Fig. 3 die Gestalt der Klinke 28b der bekannten Ausführung strichpunktiert eingezeichnet. Die Auflagefläche 68 der bekannten Klinke 28b besitzt nicht die gleiche Neigung wie die Schrägwandung 69 des von ihr gehaltenen Projektils 22b. Hierdurch ensteht bei 71 eine linienförmige Berührung der Teile 22b, 28b. Auch hierdurch entsteht bei der bekannten Bauart an der Sperrklinke wie auch an den Projektilen erhöhte Abnützung.Furthermore, the shape of the pawl 28b of the known embodiment is shown in dash-dot lines in FIG. 3. The contact surface 68 of the known pawl 28b does not have the same inclination as the inclined wall 69 of the projectile 22b held by it. This results in a linear contact of the parts 22b, 28b at 71. This also results in increased wear on the pawl on the pawl as well as on the projectiles.

Schliesslich entsteht bei der bekannten Ausführungsform beim Auftreffen des Ausstossers 3 im Punkt 66 ein auf das Projektil 22b wirkendes Drehmoment entsprechend Pfeil 72 um den Lagerpunkt 71. Hierdurch kann das Projektil 22b in unerwünschter Weise Druck auf die innere Wandung 23b des gekrümmtes Kanals 23 ausüben. Bei der erfindungsgemässen, in Fig. 3 ausgezogen wiedergegebenen Gestaltung der Teile wird auf das Projektil 22a während des Ausstosses kein Drehmoment ausgeübt.Finally, in the known embodiment, when the ejector 3 strikes at point 66, a torque acts on the projectile 22b according to arrow 72 around the bearing point 71. As a result, the projectile 22b can undesirably exert pressure on the inner wall 23b of the curved channel 23. In the case of the design of the parts shown in full line in FIG. 3, no torque is exerted on the projectile 22a during the ejection.

Durch die einvulkanisierte Büchse 63 lässt sich eine elastische Lagerung der Sperrklinke 28 erzielen. Die beiden, besonders aus Fig. 4 ersichtlichen, unteren, gegen das Projektil 22a drückenden Sperransätze 30 der Sperrklinke 28 werden dadurch unabhängig von etwaigen toleranzbedingten Mängeln gleichmässig gegen das Projektil 22a gedrückt, was besonders bei der Ausstossphase nach Fig. 2 von Bedeutung ist. Das Projektil 22a wird dadurch an seinem vorderen und hinteren Ende gleichmässig von der Sperrklinke 28 gehalten. Es erfährt von ihr während des in Fig. 2 dargestellten Vorbeigleitens von beiden Ansätzen 30 gleiche Anpresskraft. Dadurch fällt das Projektil in der in Fig. 4 gestrichelt angedeuteten Waagrechtposition 22c abwärts in die Rücktransporteinrichtung 20.The vulcanized bushing 63 allows the pawl 28 to be elastically supported. The two lower locking projections 30 of the pawl 28, which can be seen particularly in FIG. 4 and press against the projectile 22a, are thereby pressed uniformly against the projectile 22a regardless of any tolerance-related defects, which is particularly important in the ejection phase according to FIG. 2. The projectile 22a is thereby held uniformly at its front and rear ends by the pawl 28. It experiences the same contact pressure from both approaches 30 as it moves past in FIG. 2. As a result, the projectile falls downward into the return transport device 20 in the horizontal position 22c indicated by dashed lines in FIG. 4.

Zum Vergleich ist bei der bekannten Ausführungsform nach den Fig. 7, 8 eine schräg stehende Ausstossposition 22d des Projektils eingezeichnet, wie sie bei dieser Bauart in unerwünschter Weise auftreten kann. Dadurch, dass hier die Sperrklinke 28 mittels eines Gleitlagers 72 auf der Achse 29 gelagert und für die federnde Wirkung eine Feder 32 benutzt ist, kann sich während der Ausstossphase nach Fig. 2 ein Unterschied R (Fig. 8) zwischen dem sich an der Vorderseite des Projektils 22a einstellenden Durchstossschlitz S und dem sich an der Rückseite einstellenden Durchstossschlitz T einstellen. Dadurch kann die Schrägposition 22d des Projektils gemäss Fig. 7 auftreten, selbst bei genauer Bearbeitung der Teile unter geringsten Toleranzen.For comparison, in the known embodiment according to FIGS. 7, 8, an oblique ejection position 22d of the projectile is shown, as can occur in an undesired manner with this type of construction. Due to the fact that the pawl 28 is mounted on the axle 29 by means of a slide bearing 72 and a spring 32 is used for the resilient action, a difference R (FIG. 8) between that at the front can occur during the ejection phase according to FIG. 2 of the projectile 22a and the puncture slot S which adjusts at the rear. As a result, the oblique position 22d of the projectile according to FIG. 7 can occur, even when the parts are machined precisely under the smallest tolerances.

Bei der erfindungsgemässen Ausführungsform gemäss den Fig. 1 bis 6 enthält die Sperrklinke 28 eine einzige, in ihrer Mitte angeordnete Anschlagschraube 75, welche bei der Anschlagposition nach den Fig. 1, 5 gegen einen unteren Steg 76 eines als Ganzes mit 10 bezeichneten, U-förmigen, die eine Wandung der Führung 2 für den Ausstosser 3 im Fangwerkgehäuse 1 bildenden Bleches schlägt. Durch die Anordnung dieses Anschlages 75 in der Mitte der Sperrklinke 28 lässt sich erreichen, dass die Teile mit grösseren Toleranzen versehen sein können, als dies z.B. bei der bekannten Bauart nach den Fig. 7,8 der Fall ist, wo die Sperrklinke 28 an beiden Enden je eine Anschlagschraube 75a enthält.In the embodiment according to the invention according to FIGS. 1 to 6, the pawl 28 contains a single stop screw 75 arranged in its center, which in the stop position according to FIGS. 1, 5 against a lower web 76 of a U, designated as a whole by 10, shaped that strikes a wall of the guide 2 for the ejector 3 in the catch mechanism housing 1 forming sheet. By arranging this stop 75 in the middle of the pawl 28, it can be achieved that the parts can be provided with greater tolerances than, for example, 7,8 is the case where the pawl 28 contains a stop screw 75a at both ends.

Bei der Bauart nach den Fig. 9, 10 sind die beiden Ansätze 30 der Sperrklinke 28 auf einem Träger 77 angeordnet, der mittels eines Gleitlagers 78 auf einer senkrechten Achse 79 der Sperrklinke schwenkbar angeordnet ist. Die Sperrklinke 28 ist spielfrei in einem Gleitlager 74 gelagert und steht unter der Wirkung der Feder 32. Eine der Lagerbüchse 63 entsprechende Büchse ist hier fortgelassen.9, 10, the two lugs 30 of the pawl 28 are arranged on a carrier 77 which is pivotably arranged on a vertical axis 79 of the pawl by means of a slide bearing 78. The pawl 28 is mounted without play in a slide bearing 74 and is under the action of the spring 32. A bush corresponding to the bearing bush 63 is omitted here.

Durch den frei schwenkbaren Träger 77 lässt sich erzielen, dass die beiden Durchstossschlitze S, T am Anfang bzw. Ende des Projektils 22a - auch bei relativ grossen Toleranzen der Teile - gleich sind und das Projektil in horizontaler Position 22c in die Rücktransportvorrichtung 20 gestossen wird. Eine Schrägposition 22d gemäss Fig. 7, wie bei der früheren Bauart, lässt sich vermeiden.The freely pivotable carrier 77 makes it possible for the two piercing slots S, T at the beginning and end of the projectile 22a to be the same - even with relatively large tolerances of the parts - and for the projectile to be pushed into the return transport device 20 in the horizontal position 22c. An oblique position 22d according to FIG. 7, as in the previous design, can be avoided.

Bei einer abgewandelten Bauart ist die innere Wandung des gekrümmten Kanals 23 entsprechend der in Fig. 3 gestrichelt angedeuteten Linie 23c ausgebildet. Die Ausnehmung 51 kann z.B. auch bei 55 mehr oder weniger gerundet sein. Dies kommt besonders dann in Betracht, wenn das Projektil 22a ebenfalls eine entsprechende Rundung aufweist. Ggf. kann die Position 22a des Projektils geringfügig von der vertikalen Stellung abweichen; in jedem Fall aber nur inoweit, als der Ausstosser 3 mit seinem Fussstück 16 noch flächig auf das Projektil aufzutreffen vermag, so dass die vorteilhafte Stosswirkung ohne Auftreten eines Drehmomentes 72 erhalten bleibt. Wenn die Lagerbüchse 63 nicht mit den Teilen 28,29 durch Vulkanisation verbunden ist, dient sie lediglich zur elastischen Lagerung und somit zur selbstzentrierenden Wirkung der Sperrklinke 28 im Hinblick auf das zu haltende Projektil 22a. Zur Federwirkung der Sperrklinke muss dann eine Feder 32 verwendet werden.In the case of a modified type of construction, the inner wall of the curved channel 23 is designed in accordance with the line 23c indicated by dashed lines in FIG. 3. The recess 51 can, for example, also be more or less rounded at 55. This is particularly worth considering if the projectile 22a also has a corresponding curvature. Possibly. the position 22a of the projectile may deviate slightly from the vertical position; in any case only to the extent that the ejector 3 can still strike the projectile flatly with its foot piece 16, so that the advantageous impact effect is maintained without the occurrence of a torque 72. If the bearing bush 63 is not connected to the parts 28, 29 by vulcanization, it is only used for elastic storage and thus for self-centering the effect of the pawl 28 with respect to the projectile 22a to be held. A spring 32 must then be used for the spring action of the pawl.

Wenn das Projektil 22 einen anderen Querschnitt als den in den Fig. 1 bis 3 wiedergegebenen, polygonalen Querschnitt, z.B. einen an den beiden kurzen Seiten gerundeten Querschnitt besitzt, wird die Ausnehmung 51 zweckmässig dem Profilquerschnitt angepasst. Sie kann dann z.B. etwa gemäss der in Fig. 3 doppelt strichpunktiert angedeuteten Linie 51 a verlaufen.If the projectile 22 has a cross-section other than the polygonal cross-section shown in Figs. 1-3, e.g. has a cross section rounded on the two short sides, the recess 51 is expediently adapted to the profile cross section. It can then e.g. run approximately according to line 51 a, which is indicated by two-dot chain lines in FIG. 3.

Auch die Auflagefläche 58 der Sperrklinke 28 wird zweckmässig dem Profil des Projektils 22 in jedem Fall so angepasst, dass die Berührung zwischen den Teilen 58, 59 flächig erfolgt.The contact surface 58 of the pawl 28 is also expediently adapted to the profile of the projectile 22 in such a way that the contact between the parts 58, 59 takes place over a large area.

Claims (5)

1. Guide arrangement for a weft-insertion projectile (22) in the catch mechanism (1) of a weaving machine, which guide arrangement comprises a curved channel (23) for guiding the projectiles (22) that have arrived in the catch mechanism (1) into a return transport means (20), further at the channel end (83) a pivotable lock pawl (28) as well as an ejector (3) insertable into the curved channel (23) and guided in a straight- line guide (2) for the successive ejection of one projectile (22) at a time while the lock pawl (28) is swung away, characterized in that the outer wall (23a) of the curved channel (23) comprises a recess (51) of such a form that through it a position (22a) parallel to the direction of ejection (arrow 40) is made possible for the projectile (22) as it strikes against the lock pawl (28).
2. Arrangement according to Claim 1, characterized in that the lock pawl (28) has a bearing surface (58) adapted to the projectile (22), whereby the latter is held in its position (22a) parallel to the direction of ejection (arrow 40).
3. Arrangement according to Claim 1 or 2, characterized in that the lock pawl (28), which is equipped with at least one lock shoulder (30) protruding into the path of the projectile (22a) to be held, is mounted in the catch mechanism (1) with interposition of a flexible bearing bushing (63) preferably vulcanized in.
4. Arrangement according to one of the preceding claims, characterized in that the lock pawl (28) has a single, central stop (75), e.g. an adjustable stop screw, which in locking position strikes against the catch mechanism housing (at 76).
5. Arrangement according to one of the preceding claims, characterized in that the lock shoulder (30) protruding into the path of the projectile (22a) to be held is disposed on a support (77) which is arranged on the lock pawl (28) pivotable about an axis (79) perpendicular to the pivot axle (29) thereof.
EP81810395A 1981-09-30 1981-09-30 Guideway for a dummy shuttle in the gripping device of a weaving loom Expired EP0075639B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP81810395A EP0075639B1 (en) 1981-09-30 1981-09-30 Guideway for a dummy shuttle in the gripping device of a weaving loom
DE8181810395T DE3167969D1 (en) 1981-09-30 1981-09-30 Guideway for a dummy shuttle in the gripping device of a weaving loom
US06/408,925 US4475575A (en) 1981-09-30 1982-08-17 Catching mechanism for a weaving machine
SU823488902A SU1255060A3 (en) 1981-09-30 1982-09-13 Arrangement for reception of clamping shuttle of loom
JP57170800A JPS5865038A (en) 1981-09-30 1982-09-29 Guide apparatus of weft yarn insert projector in catch mechanism of loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81810395A EP0075639B1 (en) 1981-09-30 1981-09-30 Guideway for a dummy shuttle in the gripping device of a weaving loom

Publications (2)

Publication Number Publication Date
EP0075639A1 EP0075639A1 (en) 1983-04-06
EP0075639B1 true EP0075639B1 (en) 1984-12-27

Family

ID=8188677

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81810395A Expired EP0075639B1 (en) 1981-09-30 1981-09-30 Guideway for a dummy shuttle in the gripping device of a weaving loom

Country Status (5)

Country Link
US (1) US4475575A (en)
EP (1) EP0075639B1 (en)
JP (1) JPS5865038A (en)
DE (1) DE3167969D1 (en)
SU (1) SU1255060A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3610429A1 (en) * 1986-03-27 1987-10-01 Boehringer Mannheim Gmbh Coagulation-neutral, hydrophilic glass fibers
US4733919A (en) * 1987-03-10 1988-03-29 Hwp Group, Inc. Integrated pressure exhaust valve and fluid coupling

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696222A (en) * 1947-08-20 1954-12-07 Sulzer Ag Gripper shuttle loom
CH635624A5 (en) * 1979-02-05 1983-04-15 Saurer Ag Adolph DEVICE ON CONTINUOUS WEAVING MACHINE FOR THE TRANSFER OF THE WIFE TIP.
DE2964008D1 (en) * 1979-06-01 1982-12-16 Sulzer Ag Receiving mechanism for the gripper shuttle in a weaving machine

Also Published As

Publication number Publication date
DE3167969D1 (en) 1985-02-07
JPS5865038A (en) 1983-04-18
EP0075639A1 (en) 1983-04-06
SU1255060A3 (en) 1986-08-30
US4475575A (en) 1984-10-09

Similar Documents

Publication Publication Date Title
DE2319736B2 (en) Stripping device for belt straps
AT391603B (en) DRAWER DRAWER DIFFERENTIAL DESIGN
DE2120585C3 (en) Device for the shuttle transport on traveling shed looms
DE3423119A1 (en) Device for laying an elastomeric sealing profile in strip form in expansion joints of carriageways
EP0075639B1 (en) Guideway for a dummy shuttle in the gripping device of a weaving loom
DE3634699A1 (en) DEVICE AND METHOD FOR SEPARATING TEXTILE AREAS
EP0233142B1 (en) Gripper for weft insertion in a gripper weaving machine
CH670262A5 (en)
DE2449913C2 (en) Ski safety binding
DE69206230T2 (en) Leno shaft.
EP0557723B1 (en) Inserting tapes or rods guiding device for looms
DE2540265A1 (en) DEVICE FOR CONTROLLING A GRIPPING FINGER OF A SHOT DISCHARGE CARRIER OF A CONTINUOUS WEAVING MACHINE
CH671909A5 (en)
DE3725483A1 (en) DRIVE FRONT PLATE WITH AUTOMATIC CENTERING FOR A SECURITY BINDING
DE1535696B2 (en) Rifleman guards for looms
DE836026C (en) Rapier loom
EP0019648B1 (en) Receiving mechanism for the gripper shuttle in a weaving machine
DE109568C (en)
DE1944345B2 (en) Drag chain conveyor
DE2838718B1 (en) Device for the return transport of weft insertion projectiles of a weaving machine
DE1611390C3 (en) Suction air scraper on a suction air separator for letters and similar flat conveyed goods
DE248773C (en)
AT21218B (en) Shuttle box for looms with shuttle replacement device.
DE2643070A1 (en) DEVICE FOR THE PRESENCE CONTROL OF A SHEET IN A SHEET FOLDER
DE221511C (en)

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

17P Request for examination filed

Effective date: 19811002

AK Designated contracting states

Designated state(s): CH DE FR IT LI

RBV Designated contracting states (corrected)

Designated state(s): CH DE FR IT LI

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): CH DE FR IT LI

REF Corresponds to:

Ref document number: 3167969

Country of ref document: DE

Date of ref document: 19850207

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19891024

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19900531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19900601

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19900930

Ref country code: CH

Effective date: 19900930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL