EP0189496A1 - Brake for the dummy shuttle of a loom - Google Patents

Brake for the dummy shuttle of a loom Download PDF

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Publication number
EP0189496A1
EP0189496A1 EP85100855A EP85100855A EP0189496A1 EP 0189496 A1 EP0189496 A1 EP 0189496A1 EP 85100855 A EP85100855 A EP 85100855A EP 85100855 A EP85100855 A EP 85100855A EP 0189496 A1 EP0189496 A1 EP 0189496A1
Authority
EP
European Patent Office
Prior art keywords
brake
projectile
actuator
brake shoe
wedge
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
EP85100855A
Other languages
German (de)
French (fr)
Other versions
EP0189496B1 (en
Inventor
Otto Dr. Hintsch
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
Sulzer AG
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 Sulzer AG, Gebrueder Sulzer AG filed Critical Sulzer AG
Priority to DE8585100855T priority Critical patent/DE3567916D1/en
Priority to EP85100855A priority patent/EP0189496B1/en
Priority to US06/810,038 priority patent/US4674544A/en
Priority to SU864008363A priority patent/SU1366065A3/en
Priority to JP61015559A priority patent/JPS61174451A/en
Publication of EP0189496A1 publication Critical patent/EP0189496A1/en
Application granted granted Critical
Publication of EP0189496B1 publication Critical patent/EP0189496B1/en
Expired 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
    • D03D47/12—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
    • 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
    • D03D49/52—Shuttle boxes
    • D03D49/54—Braking means; Swells

Definitions

  • the invention relates to a projectile brake for weaving machines, with a movable and a fixed brake shoe, and an actuator for controlling the braking action by means of an adjusting spindle driven by the actuator.
  • the invention has for its object to provide a projectile brake of the type defined, which does not have the disadvantages mentioned above. According to the invention, this object is achieved by the features specified in the characterizing part of claim 1.
  • the subclaims relate to advantageous further developments.
  • a projectile brake 1 has an upper, movable brake shoe 2 and a lower, fixed brake shoe 3. Both brake shoes are provided with a brake pad 4 or 5.
  • the upper brake shoe 2 can be moved up and down in a guide 6.
  • the upper brake shoe 2 is connected via a lever system 8 to a slider 9 which can be moved up and down in a guide 10.
  • the slider 9 is guided with an oblique end face 9 'under the pressure of a spring, not shown, on a corresponding oblique side 11' of an actuator in the form of an adjusting wedge 11.
  • An opposite side 11 "of the setting wedge 11 is guided on the weaving machine 12.
  • the setting wedge 11 is provided with a threaded bore 13, in which a threaded adjusting spindle 14 of a servomotor 15 is screwed.
  • the lever system 8 consists of two levers 20 and 21, which are in one Joint 22 are connected to each other and to a brake lever 23 operated by the machine for closing and opening the projectile brake 1.
  • the extent of the braking effect of the projectile brake 1 is detected by means of two sensors 25 and 26 and a control device 27.
  • the sensors 25 and 26 are attached along the braking distance of a projectile 28 and are connected to the control device 27 via a line 29 and 30, respectively.
  • the output of the control device 27 is connected to the servomotor 15 via lines 31 and 32.
  • the control device 27 forms a corresponding actuating signal for the servomotor 15 in order to adjust the adjusting wedge 11.
  • the adjusting wedge 11 will be removed Motor 15 pressed to the left, so that the upper brake shoe 2 is slightly raised under the spring pressure, which is equivalent to a less strong braking effect when the brake is closed by the brake lever 23. If the projectile 28 penetrates too deeply into the brake, which means that the braking effect is insufficient, the servomotor 15 pulls the adjusting wedge 11 to the right, so that it moves the brake shoe 2 somewhat downwards, which results in a stronger braking effect. If the braking effect is correct, the control device does not form a control signal for the servomotor.
  • a right end face 35 'of a slide 35 is guided on a right side 36' of an adjusting wedge 36.
  • the adjusting wedge 36 is in turn guided with an opposite inclined surface 36 "on an inclined surface 37 of the weaving machine 38.
  • the mode of operation of the device is similar to that described for Fig. 1.
  • the advantage of this arrangement is that only axial positioning forces are applied to the slide 35 Effect come so that the friction in the guide 39 of the slider is only low and vibrations of the brake shoe 2 are avoided.
  • the adjusting wedges 11 and 36 are preferably made of a plain bearing material so that the required actuating force is small.

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

Abstract

Die Projektilbremse für Webmaschinen umfasst eine bewegliche Bremsbacke (2), die zwecks Steuerung der Bremswirkung in ihrem Abstand zur festen Bremsbacke (3) mittels eines Keils (11) verstellbar ist. Der Keil (11) wird von einem Stellmotor (15) in Abhängigkeit der Bremswirkung auf das Projektil (28) gesteuert. Bei dieser Projektilbremse treten keine hohen spezifischen Flächenpressungen auf. Sie erfordert keine teuren Herstellungsverfahren.The projectile brake for weaving machines comprises a movable brake shoe (2) which, in order to control the braking action, can be adjusted in its distance from the fixed brake shoe (3) by means of a wedge (11). The wedge (11) is controlled by an actuator (15) depending on the braking effect on the projectile (28). No high specific surface pressures occur with this projectile brake. It does not require expensive manufacturing processes.

Description

Die Erfindung betrifft eine Projektilbremse für Webmaschinen, mit einer beweglichen und einer festen Bremsbacke, und einem Stellmotor zum Steuern der Bremswirkung mittels einer vom Stellmotor angetriebenen Stellspindel.The invention relates to a projectile brake for weaving machines, with a movable and a fixed brake shoe, and an actuator for controlling the braking action by means of an adjusting spindle driven by the actuator.

Es ist bekannt die Bremswirkung einer Projektilbremse durch Verstellung der oberen Bremsbacke hinsichtlich der unteren Bremsbacke mittels eines Schrittmotors vorzunehmen, der über eine endlose Kette eine in der oberen Bremsbacke befestigte Gewindespindel antreibt. Bei dieser Verstellvorrichtung treten starke spezifische Flächenpressungen auf und sie erfordern teure Herstellungsverfahren.It is known to effect the braking effect of a projectile brake by adjusting the upper brake shoe with respect to the lower brake shoe by means of a stepping motor which drives a threaded spindle fastened in the upper brake shoe via an endless chain. This adjustment device has strong specific surface pressures and requires expensive manufacturing processes.

Der Erfindung liegt die Aufgabe zugrunde eine Projektilbremse der eingangs definierten Art zu schaffen, die die oben erwähnten Nachteile nicht aufweist. Diese Aufgabe wird erfindungsgemäss durch die im Kennzeichen des Anspruchs 1 angegebenen Merkmale gelöst. Die Unteransprüche betreffen vorteilhafte Weiterbildungen.The invention has for its object to provide a projectile brake of the type defined, which does not have the disadvantages mentioned above. According to the invention, this object is achieved by the features specified in the characterizing part of claim 1. The subclaims relate to advantageous further developments.

Zwei Ausführungsbeispiele des Erfindungsgegenstandes sind nachfolgend anhand der Zeichnung beschrieben. Es ist:

  • Fig. 1 eine Vorderansicht der Projektilbremse gemäss der Erfindung;
  • Fig. 2 eine abgewandelte Projektilbremse.
Two embodiments of the subject matter of the invention are described below with reference to the drawing. It is:
  • Figure 1 is a front view of the projectile brake according to the invention.
  • Fig. 2 shows a modified projectile brake.

Eine Projektilbremse 1 weist eine obere, bewegliche Bremsbacke 2 und eine untere, feste Bremsbacke 3 auf. Beide Bremsbacken sind mit einem Bremsbelag 4 bzw. 5 versehen. Die obere Bremsbacke 2 ist in einer Führung 6 auf- und abbewegbar. Die obere Bremsbacke 2 ist über ein Hebelsystem 8 mit einem Gleitstück 9 verbunden, das in einer Führung 10 auf- und abbewegbar ist. Das Gleitstück 9 ist mit einer schrägen Stirnseite 9' unter dem Druck einer nicht gezeichneten Feder an einer entsprechenden schrägen Seite 11' eines Stellgliedes in der Form eines Stellkeils 11 geführt. Eine gegenüberliegende Seite 11" des Stellkeils 11 ist an der Webmaschine 12 geführt. Der Stellkeil 11 ist mit einer Gewindebohrung 13 versehen, in der eine Gewindestellspindel 14 eines Stellmotors 15 geschraubt ist. Das Hebelsystem 8 besteht aus zwei Hebeln 20 und 21, die in einem Gelenk 22 miteinander und mit einem von der Maschine betätigten Bremshebel 23 zum Schliessen und Oeffnen der Projektilbremse 1 verbunden sind.A projectile brake 1 has an upper, movable brake shoe 2 and a lower, fixed brake shoe 3. Both brake shoes are provided with a brake pad 4 or 5. The upper brake shoe 2 can be moved up and down in a guide 6. The upper brake shoe 2 is connected via a lever system 8 to a slider 9 which can be moved up and down in a guide 10. The slider 9 is guided with an oblique end face 9 'under the pressure of a spring, not shown, on a corresponding oblique side 11' of an actuator in the form of an adjusting wedge 11. An opposite side 11 "of the setting wedge 11 is guided on the weaving machine 12. The setting wedge 11 is provided with a threaded bore 13, in which a threaded adjusting spindle 14 of a servomotor 15 is screwed. The lever system 8 consists of two levers 20 and 21, which are in one Joint 22 are connected to each other and to a brake lever 23 operated by the machine for closing and opening the projectile brake 1.

Das Ausmass der Bremswirkung der Projektilbremse 1 wird mittels zwei Sensoren 25 und 26 und einer Steuervorrichtung 27 erfasst. Die Sensoren 25 und 26 sind entlang dem Bremsweg eines Projektils 28 angebracht und über eine Leitung 29 bzw. 30 mit der Steuervorrichtung 27 verbunden. Der Ausgang der Steuervorrichtung 27 ist über Leitungen 31 und 32 mit dem Stellmotor 15 verbunden. Je nach Bremswirkung, d.h. je nach Eindringtiefe des Projektils 28 zwischen den Bremsbacken 2 und 3 bildet die Steuervorrichtung 27 ein entsprechendes Stellsignal für den Stellmotor 15 um den Stellkeil 11 zu verstellen. Dringt das Projektil 28 zuwenig tief in die Bremse ein, d.h. ist die Bremswirkung zu stark, wird der Stellkeil 11 vom Stellmotor 15 nach links gedrückt, so dass die obere Bremsbacke 2 unter dem Federdruck leicht angehoben wird, was einer weniger starken Bremswirkung gleichkommt, wenn die Bremse durch den Bremshebel 23 geschlossen wird. Dringt das Projektil 28 zu tief in die Bremse ein, was heisst, dass die Bremswirkung ungenügend ist, zieht der Stellmotor 15 den Stellkeil 11 nach rechts, so dass dieser die Bremsbacke 2 etwas nach unten bewegt, was eine stärkere Bremswirkung zur Folge hat. Bei richtiger Bremswirkung bildet die Steuervorrichtung kein Stellsignal für den Stellmotor.The extent of the braking effect of the projectile brake 1 is detected by means of two sensors 25 and 26 and a control device 27. The sensors 25 and 26 are attached along the braking distance of a projectile 28 and are connected to the control device 27 via a line 29 and 30, respectively. The output of the control device 27 is connected to the servomotor 15 via lines 31 and 32. Depending on the braking effect, ie depending on the depth of penetration of the projectile 28 between the brake shoes 2 and 3, the control device 27 forms a corresponding actuating signal for the servomotor 15 in order to adjust the adjusting wedge 11. If the projectile 28 penetrates too little into the brake, ie if the braking effect is too strong, the adjusting wedge 11 will be removed Motor 15 pressed to the left, so that the upper brake shoe 2 is slightly raised under the spring pressure, which is equivalent to a less strong braking effect when the brake is closed by the brake lever 23. If the projectile 28 penetrates too deeply into the brake, which means that the braking effect is insufficient, the servomotor 15 pulls the adjusting wedge 11 to the right, so that it moves the brake shoe 2 somewhat downwards, which results in a stronger braking effect. If the braking effect is correct, the control device does not form a control signal for the servomotor.

Beim Ausführungsbeispiel nach fig. 2 ist eine rechte Stirnseite 35' eines Gleitstückes 35 an einer rechten Seite 36' eines Stellkeiles 36 geführt. Der Stellkeil 36 ist seinerseits mit einer gegenüberliegenden schrägen Fläche 36" an einer schrägen Fläche 37 der Webmaschine 38 geführt. Die Wirkungsweise der Vorrichtung ist ähnlich wie für Fig. 1 beschrieben. Der vorteil dieser Anordnung ist, dass nur axiale Stellkräfte auf das Gleitstück 35 zur Wirkung kommen, so dass die Reibung in der Führung 39 des Gleitstückes nur gering ist und Schwingungen der Bremsbacke 2 vermieden werden.In the embodiment according to fig. 2, a right end face 35 'of a slide 35 is guided on a right side 36' of an adjusting wedge 36. The adjusting wedge 36 is in turn guided with an opposite inclined surface 36 "on an inclined surface 37 of the weaving machine 38. The mode of operation of the device is similar to that described for Fig. 1. The advantage of this arrangement is that only axial positioning forces are applied to the slide 35 Effect come so that the friction in the guide 39 of the slider is only low and vibrations of the brake shoe 2 are avoided.

Die Stellkeile 11 und 36 sind vorzugsweise aus einem Gleitlagerwerkstoff hergestellt, so dass die erforderliche Stellkraft klein ist.The adjusting wedges 11 and 36 are preferably made of a plain bearing material so that the required actuating force is small.

Claims (4)

1. Projektilbremse für Webmaschinen, mit einer beweglichen und einer festen Bremsbacke, und einem Stellmotor zum Steuern der Bremswirkung mittels einer vom Stellmotor angetriebenen Stellspindel, dadurch gekennzeichnet , dass die Stellspindel (14) ein keilförmiges Stellglied (11; 36) steuert, an dem die bewegliche Bremsbacke (2) geführt ist.1. Projectile brake for weaving machines, with a movable and a fixed brake shoe, and an actuator for controlling the braking action by means of an adjusting spindle driven by the adjusting motor, characterized in that the adjusting spindle (14) controls a wedge-shaped actuator (11; 36) on which the movable brake shoe (2) is guided. 2. Bremse nach Anspruch 1, dadurch gekennzeichnet, dass die bewegliche Bremsbacke (2) an der schrägen Seite (11') des Stellgliedes (11) geführt ist.2. Brake according to claim 1, characterized in that the movable brake shoe (2) on the oblique side (11 ') of the actuator (11) is guided. 3. Bremse nach Anspruch 1, dadurch gekennzeichnet, dass die schräge Seite (36'') des Stellgliedes (36) an einer schrägen Fläche (37) der Webmaschine (38) geführt ist.3. Brake according to claim 1, characterized in that the inclined side (36 '') of the actuator (36) is guided on an inclined surface (37) of the weaving machine (38). 4. Bremse nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, dass das Stellglied (11; 36) aus einem Gleitlagerwerkstoff hergestellt ist.4. Brake according to one of claims 1-3, characterized in that the actuator (11; 36) is made of a plain bearing material.
EP85100855A 1985-01-28 1985-01-28 Brake for the dummy shuttle of a loom Expired EP0189496B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE8585100855T DE3567916D1 (en) 1985-01-28 1985-01-28 Brake for the dummy shuttle of a loom
EP85100855A EP0189496B1 (en) 1985-01-28 1985-01-28 Brake for the dummy shuttle of a loom
US06/810,038 US4674544A (en) 1985-01-28 1985-12-17 Weaving machine projectile brake
SU864008363A SU1366065A3 (en) 1985-01-28 1986-01-21 Brake of loom clamping shuttle
JP61015559A JPS61174451A (en) 1985-01-28 1986-01-27 Flight brake for loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85100855A EP0189496B1 (en) 1985-01-28 1985-01-28 Brake for the dummy shuttle of a loom

Publications (2)

Publication Number Publication Date
EP0189496A1 true EP0189496A1 (en) 1986-08-06
EP0189496B1 EP0189496B1 (en) 1989-01-25

Family

ID=8193259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85100855A Expired EP0189496B1 (en) 1985-01-28 1985-01-28 Brake for the dummy shuttle of a loom

Country Status (5)

Country Link
US (1) US4674544A (en)
EP (1) EP0189496B1 (en)
JP (1) JPS61174451A (en)
DE (1) DE3567916D1 (en)
SU (1) SU1366065A3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH679315A5 (en) * 1988-10-03 1992-01-31 Sulzer Ag Projectile loom - has checking mechanism which measures pressure in gap beneath bottom swell with pressure sensor
EP0668383A1 (en) * 1994-02-18 1995-08-23 Sulzer RàœTi Ag Shuttle brake and dummy shuttle loom with shuttle brake

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4892121A (en) * 1988-07-14 1990-01-09 Niagara Lockport Industries Inc. Bladder type shuttle braking apparatus for looms
EP0475892B1 (en) * 1990-09-10 1995-05-17 Sulzer RàœTi Ag Yarn brake for looms
US7543610B2 (en) * 2006-06-16 2009-06-09 Sultex Ag Thread clamp for a rapier head

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE460341A (en) *
DE1244076B (en) * 1961-06-14 1967-07-06 Sulzer Ag Loom with rapier guards
FR2393094A1 (en) * 1977-06-01 1978-12-29 Sulzer Ag RECEIVING DEVICE FOR THE WEFT INSERTION BODY OF A WEAVING MACHINE
DE3222393A1 (en) * 1982-05-07 1983-11-17 Gebrüder Sulzer AG, 8401 Winterthur METHOD FOR OPERATING THE CATCHING OF GRIPPER PROJECTILE WEAVING MACHINES

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956591A (en) * 1959-03-27 1960-10-18 Chandler Evans Corp Loom binder adjusting mechanism
CH553269A (en) * 1972-06-20 1974-08-30 Sulzer Ag BRAKING DEVICE FOR PROTECTING A WEB MACHINE.
US4169492A (en) * 1978-03-27 1979-10-02 Huyck Corporation Shuttle box for looms

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE460341A (en) *
DE1244076B (en) * 1961-06-14 1967-07-06 Sulzer Ag Loom with rapier guards
FR2393094A1 (en) * 1977-06-01 1978-12-29 Sulzer Ag RECEIVING DEVICE FOR THE WEFT INSERTION BODY OF A WEAVING MACHINE
DE3222393A1 (en) * 1982-05-07 1983-11-17 Gebrüder Sulzer AG, 8401 Winterthur METHOD FOR OPERATING THE CATCHING OF GRIPPER PROJECTILE WEAVING MACHINES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH679315A5 (en) * 1988-10-03 1992-01-31 Sulzer Ag Projectile loom - has checking mechanism which measures pressure in gap beneath bottom swell with pressure sensor
EP0668383A1 (en) * 1994-02-18 1995-08-23 Sulzer RàœTi Ag Shuttle brake and dummy shuttle loom with shuttle brake

Also Published As

Publication number Publication date
US4674544A (en) 1987-06-23
JPS61174451A (en) 1986-08-06
DE3567916D1 (en) 1989-03-02
SU1366065A3 (en) 1988-01-07
EP0189496B1 (en) 1989-01-25

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