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EP0471187B1 - Thread take up device for an embroidering machine - Google Patents

Thread take up device for an embroidering machine Download PDF

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Publication number
EP0471187B1
EP0471187B1 EP91111544A EP91111544A EP0471187B1 EP 0471187 B1 EP0471187 B1 EP 0471187B1 EP 91111544 A EP91111544 A EP 91111544A EP 91111544 A EP91111544 A EP 91111544A EP 0471187 B1 EP0471187 B1 EP 0471187B1
Authority
EP
European Patent Office
Prior art keywords
transmission arm
thread take
cam
thread
guide lever
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
EP91111544A
Other languages
German (de)
French (fr)
Other versions
EP0471187A1 (en
Inventor
Uwe Webers
Paul Woelfle
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.)
WEBERS, UWE
Woelfle Paul
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6856353&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0471187(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0471187A1 publication Critical patent/EP0471187A1/en
Application granted granted Critical
Publication of EP0471187B1 publication Critical patent/EP0471187B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B49/00—Take-up devices, e.g. levers, for the needle thread
    • D05B49/02—Take-up devices, e.g. levers, for the needle thread operated by cams or linkages

Definitions

  • the invention relates to a thread transmitter for an embroidery machine with at least one pivotably mounted thread guide lever, which is guided by a transmission arm, the movement of which is controlled by a cam disk rotating with a drivable main shaft, the transmission arm being decoupled from the cam disk.
  • It can be a thread feeder for an embroidery machine with one or more embroidery heads.
  • Each embroidery head can have one or more thread guide levers.
  • the thread guide lever is coupled to the transmission arm via a toothing.
  • the transmission arm has at its free end a projection which is guided in a form-fitting manner in a backdrop, the inner part of which is formed by a cam disk.
  • the transmission arm can be moved with the help of a solenoid in the axial direction of the main shaft and thereby from the main shaft be decoupled, at the same time engaging another projection of the transmission arm in a fixed recess and thereby blocking the transmission arm and the thread guide lever.
  • the thread feed movement is achieved by a thread guide lever, the free end of which rests non-positively on a cam disc by means of a feeler roller.
  • the object of the invention is to improve a thread transmitter of the type described above so that the thread guide lever can be pivoted into any position independently of the main shaft.
  • the object is achieved in that the transmission arm is held non-positively on the cam.
  • the force can be with a spring, e.g. B. a mechanical or a gas pressure spring, but you can also use a lifting cylinder, z. B. apply a pneumatic or hydraulic lifting cylinder.
  • a spring e.g. B. a mechanical or a gas pressure spring
  • the other position can be a predetermined position, in particular one that is suitable for thread trimming.
  • the thread guide lever can be firmly connected to the transmission arm. Furthermore, the transmission arm can have a roller at its free end for abutment on the cam disc.
  • the thread encoder shown in the drawing is intended for an embroidery machine, which is not shown in detail.
  • the thread feeder includes at least one thread guide lever 1 which is pivotably mounted on an axis 2.
  • the thread guide lever 1 is arranged in the usual way in the area of an associated needle bar, not shown.
  • a transmission arm 3 is fixedly connected, which carries a roller 4 at its lower free end, which abuts a cam disc 5.
  • the cam disc 5 sits on a main shaft, not shown, the axis 6 is indicated.
  • the main shaft is driven in rotation. When the main shaft rotates and the transmission arm bears against the cam disc 5, the pivoting movement of the thread guide lever 1 is controlled in accordance with the curve of the cam disc 5.
  • the transmission arm 3 is held non-positively on the cam plate 5.
  • a spring 7 is provided, one end of which engages the transmission arm 3 and the other end of which is supported at 8 in a stationary manner.
  • a lifting cylinder 9 is provided, the piston rod 10 of which is articulated on the transmission arm 3 and the other end of which is articulated on the abutment 8.
  • the lifting cylinder 9 has connections 11 for the pressure medium.
  • the pressure medium can be liquid or gaseous.
  • the counterforce can be regulated or not regulated. It can be applied mechanically with a device (not shown) for pivoting the thread guide lever and independently of the state of motion of the main shaft.
  • the roller (4) is held by the spring on the thread guide lever (1) and on the transmission arm (3) on the cam disc (5).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Description

Die Erfindung betrifft einen Fadengeber für eine Stickmaschine mit wenigstens einem schwenkbar gelagerten Fadenführungshebel, der von einem Übertragungsarm geführt ist, dessen Bewegung von einer mit einer antreibbaren Hauptwelle rotierenden Kurvenscheibe gesteuert ist, wobei der Übertragungsarm von der Kurvenscheibe entkoppelbar ist. Es kann sich dabei um Fadengeber für eine Stickmaschine mit einem oder mehreren Stickköpfen handeln. Jeder Stickkopf kann einen oder mehrere Fadenführungshebel aufweisen.The invention relates to a thread transmitter for an embroidery machine with at least one pivotably mounted thread guide lever, which is guided by a transmission arm, the movement of which is controlled by a cam disk rotating with a drivable main shaft, the transmission arm being decoupled from the cam disk. It can be a thread feeder for an embroidery machine with one or more embroidery heads. Each embroidery head can have one or more thread guide levers.

Bei einer bekannten Ausführung (DE 39 23 419) ist der Fadenführungshebel über eine Verzahnung mit dem Übertragungsarm gekoppelt. Der Übertragungsarm besitzt an seinem freien Ende einen Vorsprung, der in einer Kulisse, deren inneres Teil von einer Kurvenscheibe gebildet ist, formschlüssig geführt ist. Der Übertragungsarm kann mit Hilfe eines Solenoids in achsialer Richtung der Hauptwelle verschoben und dadurch von der Hauptwelle entkoppelt werden, wobei gleichzeitig ein anderer Vorsprung des Übertragungsarms in eine ortsfeste Ausnehmung eingreift und dadurch den Übertragungsarm sowie den Fadenführungshebel blockiert.In a known embodiment (DE 39 23 419) the thread guide lever is coupled to the transmission arm via a toothing. The transmission arm has at its free end a projection which is guided in a form-fitting manner in a backdrop, the inner part of which is formed by a cam disk. The transmission arm can be moved with the help of a solenoid in the axial direction of the main shaft and thereby from the main shaft be decoupled, at the same time engaging another projection of the transmission arm in a fixed recess and thereby blocking the transmission arm and the thread guide lever.

Bei einer bekannten Ausführung DE-A-2 213 310 wird die Fadengeberbewegung durch einen Fadenführungshebel erreicht, dessen freies Ende kraftschlüssig mittels einer Tastrolle auf einer Kurvenscheibe anliegt. Durch eine näher beschriebene Einrichtung ist es möglich, in Abhängigkeit von der Stichbildung, Fadenart und der Teilung der Madelfontur, die Fadenmenge anzupassen.In a known version DE-A-2 213 310, the thread feed movement is achieved by a thread guide lever, the free end of which rests non-positively on a cam disc by means of a feeler roller. By means of a device described in more detail, it is possible to adapt the amount of thread depending on the stitch formation, type of thread and the division of the shape of the sleeve.

Aufgabe der Erfindung ist es, einen Fadengeber der eingangs beschriebenen Gattung so zu verbessern, daß der Fadenführungshebel unabhängig von der Hauptwelle in beliebige Positionen verschwenkt werden kann.The object of the invention is to improve a thread transmitter of the type described above so that the thread guide lever can be pivoted into any position independently of the main shaft.

Die Aufgabe wird dadurch gelöst, daß der Übertragungsarm kraftschlüssig an der Kurvenscheibe gehalten ist. Die Kraft kann mit einer Feder, z. B. einer mechanischen oder einer Gasdruckfeder aufgebracht werden, man kann die Kraft aber auch mit einem Hubzylinder, z. B. einem pneumatischen oder hydraulischen Hubzylinder aufbringen. Mit dem Kraftschluß zwischen dem Übertragungsarm und der Kurvenscheibe kann nicht nur die Schwenkbewegung des Fadenführungshebels exakt gesteuert werden, sondern es besteht auch die Möglichkeit, jederzeit den Fadenführungshebel mit einer regelbaren oder nicht regelbaren Gegenkraft in eine beliebige andere Position zu bringen. Die andere Position kann eine vorbestimmte Position sein, insbesondere eine solche, die zum Fadenabschneiden geeignet ist.The object is achieved in that the transmission arm is held non-positively on the cam. The force can be with a spring, e.g. B. a mechanical or a gas pressure spring, but you can also use a lifting cylinder, z. B. apply a pneumatic or hydraulic lifting cylinder. With the frictional connection between the transmission arm and the cam, not only can the pivoting movement of the thread guide lever be precisely controlled, but there is also the possibility of bringing the thread guide lever into any other position at any time with an adjustable or non-adjustable counterforce. The other position can be a predetermined position, in particular one that is suitable for thread trimming.

Erfindungsgemäß kann der Fadenführungshebel fest mit dem Übertragungsarm verbunden sein. Ferner kann der Übertragungsarm an seinem freien Ende eine Rolle zur Anlage an der Kurvenscheibe aufweisen.According to the thread guide lever can be firmly connected to the transmission arm. Furthermore, the transmission arm can have a roller at its free end for abutment on the cam disc.

Im folgenden werden in der Zeichnung dargestellte Ausführungsbeispiele der Erfindung erläutert; es zeigen:

Fig. 1
schematisch die Ansicht eines Fadenführungshebels mit zugeordnetem Steuerantrieb,
Fig. 2
eine andere Auführung des Gegenstandes nach Fig. 1.
Exemplary embodiments of the invention illustrated in the drawing are explained below; show it:
Fig. 1
schematically the view of a thread guide lever with assigned control drive,
Fig. 2
another listing of the object according to FIG. 1.

Der in der Zeichnung dargestellte Fadengeber ist für eine Stickmaschine bestimmt, die im einzelnen nicht wiedergegeben ist. Zu dem Fadengeber gehört wenigstens ein Fadenführungshebel 1, der schwenkbar auf einer Achse 2 gelagert ist. Der Fadenführungshebel 1 ist in üblicher Weise im Bereich einer zugeordneten, nicht dargestellten Nadelstange angeordnet. Mit dem Fadenführungshebel 1 ist fest verbunden ein Übertragungsarm 3, der an seinem unteren freien Ende eine Rolle 4 trägt, die an einer Kurvenscheibe 5 anliegt. Die Kurvenscheibe 5 sitzt auf einer nicht dargestellten Hauptwelle, deren Achse 6 angedeutet ist. Die Hauptwelle ist rotierend angetrieben. Bei rotierender Hauptwelle und an der Kurvenscheibe 5 anliegendem Übertragungsarm wird die Schwenkbewegung des Fadenführungshebels 1 nach Maßgabe des Kurvenzuges der Kurvenscheibe 5 gesteuert.The thread encoder shown in the drawing is intended for an embroidery machine, which is not shown in detail. The thread feeder includes at least one thread guide lever 1 which is pivotably mounted on an axis 2. The thread guide lever 1 is arranged in the usual way in the area of an associated needle bar, not shown. With the thread guide lever 1, a transmission arm 3 is fixedly connected, which carries a roller 4 at its lower free end, which abuts a cam disc 5. The cam disc 5 sits on a main shaft, not shown, the axis 6 is indicated. The main shaft is driven in rotation. When the main shaft rotates and the transmission arm bears against the cam disc 5, the pivoting movement of the thread guide lever 1 is controlled in accordance with the curve of the cam disc 5.

Der Übertragungsarm 3 ist kraftschlüssig an der Kurvenscheibe 5 gehalten. Bei der Ausführung nach Fig. 1 ist eine Feder 7 vorgesehen, deren eines Ende am Übertragungsarm 3 angreift und deren anderes Ende bei 8 ortsfest abgestützt ist. Bei der Ausführung nach Fig. 2 ist ein Hubzylinder 9 vorgesehen, dessen Kolbenstange 10 gelenkig am Übertragungsarm 3 angreift und dessen anderes Ende gelenkig am Widerlager 8 gehalten ist. Der Hubzylinder 9 weist Anschlüsse 11 für das Druckmittel auf. Das Druckmittel kann flüssig oder gasförmig sein.The transmission arm 3 is held non-positively on the cam plate 5. In the embodiment according to FIG. 1, a spring 7 is provided, one end of which engages the transmission arm 3 and the other end of which is supported at 8 in a stationary manner. In the embodiment according to FIG. 2, a lifting cylinder 9 is provided, the piston rod 10 of which is articulated on the transmission arm 3 and the other end of which is articulated on the abutment 8. The lifting cylinder 9 has connections 11 for the pressure medium. The pressure medium can be liquid or gaseous.

Um den Fadenführungshebel 1 von der durch die Kurvenscheibe 5 der Hauptwelle induzierten Bewegung abzukoppeln, genügt es, am Übertragungsarm 3 oder am Fadenführungshebel 1 eine entsprechende Gegenkraft angreifen zu lassen, damit der Fadenführungshebel 1 in eine beliebige andere Position, insbesondere eine für das Fadenabschneiden günstige Position, geschwenkt werden kann. Die Gegenkraft kann regelbar oder nicht regelbar sein. Sie kann mit einer nicht dargestellten Einrichtung zum Verschwenken des Fadenführungshebels maschinell sowie unabhängig vom Bewegungszustand der Hauptwelle aufgebracht werden.To the thread guide lever 1 from the through the cam 5 to decouple the main shaft induced movement, it is sufficient to let a corresponding counterforce act on the transmission arm 3 or on the thread guide lever 1 so that the thread guide lever 1 can be pivoted into any other position, in particular a position favorable for thread trimming. The counterforce can be regulated or not regulated. It can be applied mechanically with a device (not shown) for pivoting the thread guide lever and independently of the state of motion of the main shaft.

Die Rolle (4) wird durch die Feder über den Fadenführungshebel (1) und über den Übertragungsarm (3) an der Kurvenscheibe (5) gehalten.The roller (4) is held by the spring on the thread guide lever (1) and on the transmission arm (3) on the cam disc (5).

Claims (5)

  1. A thread take-up for an embroidery machine, comprising at least one pivotally mounted guide lever guided by a transmission arm, the motion of which is controlled by a cam rotatable with a drivable main shaft, the transmission arm being detachable from the cam, characterised in that the transmission arm (3) is non-positively held against the cam (5) and a device for pivoting the thread take-up lever (1) is provided in any desired position irrespective of motion of main shaft.
  2. A thread take-up according to claim 1, characterised by a spring (7) engaging the transmission arm (3).
  3. A thread take-up according to claim 1, characterised by a lifting cylinder (9) engaging the transmission arm (3).
  4. A thread take-up according to any of claims 1 to 3, characterised in that the thread take-up lever (1) is permanently connected to the transmission arm (3).
  5. A thread take-up according to any of claims 1 to 4, characterised in that at its free end the transmission arm (3) has a roller (4) for abutting against the cam (5).
EP91111544A 1990-08-09 1991-07-11 Thread take up device for an embroidering machine Expired - Lifetime EP0471187B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9011592U DE9011592U1 (en) 1990-08-09 1990-08-09 Thread take-up for an embroidery machine
DE9011592U 1990-08-09

Publications (2)

Publication Number Publication Date
EP0471187A1 EP0471187A1 (en) 1992-02-19
EP0471187B1 true EP0471187B1 (en) 1996-02-07

Family

ID=6856353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111544A Expired - Lifetime EP0471187B1 (en) 1990-08-09 1991-07-11 Thread take up device for an embroidering machine

Country Status (4)

Country Link
US (1) US5213053A (en)
EP (1) EP0471187B1 (en)
KR (1) KR0186002B1 (en)
DE (2) DE9011592U1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19745150A1 (en) * 1997-10-14 1999-04-15 Zsk Stickmasch Gmbh Embroidery head
DE19825784A1 (en) * 1998-06-10 1999-12-16 Zsk Stickmasch Gmbh Drive mechanism for the thread guide lever in a multi-head embroidery machine
US20050210991A1 (en) * 2004-03-23 2005-09-29 C.J. Winter Machine Technologies, Inc. Method and apparatus for indicating an apparent error in the operation of a fluid-powered thread-forming attachment
CN102454060B (en) * 2010-10-22 2012-12-26 杨弟心 Bow shuttle quilting machine
CN102828358A (en) * 2012-08-27 2012-12-19 吴江市中盛机械有限公司 Line-taking lever component for double-needle sewing machine
CN116180346B (en) * 2023-03-22 2024-10-01 福建省和达智能科技有限公司 Embroidery mechanism of embroidery machine

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733619A (en) * 1956-02-07 smith
CH82781A (en) * 1918-11-28 1920-01-02 Johann Duenner Thread changing device on shuttle embroidery machines
US1525264A (en) * 1924-01-28 1925-02-03 Bloom Louis Embroidery machine
US2213299A (en) * 1935-06-14 1940-09-03 Julius Kayser & Company Multiyarn laying mechanism for knitting machines
US2237248A (en) * 1938-02-05 1941-04-01 Honeywell Regulator Co Control system
US2748731A (en) * 1952-07-17 1956-06-05 Irving J Moritt Sewing machine
US2863331A (en) * 1954-06-30 1958-12-09 Katcher Morris Fuel pump actuating lever
GB1162830A (en) * 1966-12-06 1969-08-27 Gen Motors France Diaphragm Pump Rocker Arms
DE2213310A1 (en) * 1972-03-18 1973-09-20 Kemptener Gmbh Maschf Yarn take-up - using control cam to determine volume of thread yarn delivered
US3978688A (en) * 1976-03-26 1976-09-07 The Singer Company Folding handles for the carriage of a flat bed knitting machine
DE3134376A1 (en) * 1981-08-31 1983-03-10 Rudolf 5450 Neuwied Reich Thread-guide/repeat-change device
SE8500404D0 (en) * 1985-01-29 1985-01-29 Husqvarna Ab PROVISION OF WIRE ASSEMBLY ON A SEWING MACHINE
JPS62209266A (en) * 1986-03-07 1987-09-14 Ckd Corp Spring gear for cam mechanism
JPH0728975B2 (en) * 1987-03-19 1995-04-05 蛇の目ミシン工業株式会社 Automatic needle thread hooking device for sewing machine
JPH0223988A (en) * 1988-07-14 1990-01-26 Tokai Ind Sewing Mach Co Ltd Balance driving gear in multihead sewing-machine

Also Published As

Publication number Publication date
US5213053A (en) 1993-05-25
DE59107377D1 (en) 1996-03-21
DE9011592U1 (en) 1990-10-18
EP0471187A1 (en) 1992-02-19
KR0186002B1 (en) 1999-05-01

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