EP0479838A1 - Automatic bobbin-winding machine, in particular for lockstitch machines. - Google Patents

Automatic bobbin-winding machine, in particular for lockstitch machines.

Info

Publication number
EP0479838A1
EP0479838A1 EP90909625A EP90909625A EP0479838A1 EP 0479838 A1 EP0479838 A1 EP 0479838A1 EP 90909625 A EP90909625 A EP 90909625A EP 90909625 A EP90909625 A EP 90909625A EP 0479838 A1 EP0479838 A1 EP 0479838A1
Authority
EP
European Patent Office
Prior art keywords
bobbin
interchangeable head
machine according
thread
bobbin case
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
EP90909625A
Other languages
German (de)
French (fr)
Other versions
EP0479838B1 (en
Inventor
Peter Reinders
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.)
Carl Schmale GmbH and Co
Original Assignee
Carl Schmale GmbH and Co
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 Carl Schmale GmbH and Co filed Critical Carl Schmale GmbH and Co
Priority to AT90909625T priority Critical patent/ATE93285T1/en
Publication of EP0479838A1 publication Critical patent/EP0479838A1/en
Application granted granted Critical
Publication of EP0479838B1 publication Critical patent/EP0479838B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
    • D05B59/04—Devices for changing the bobbin

Definitions

  • the invention relates to a machine for automatically changing bobbin bobbins for, in particular, lockstitch sewing machines with an interchangeable head which removes an empty bobbin from a lower part of the sewing machine and supports a full bobbin.
  • DE-PS 886 115 relates to a bobbin with a turret for automatic bobbin change and a thread-knotting device.
  • the invention has for its object to provide a machine for automatic replacement of bobbin bobbins, in particular for lockstitch sewing machines, which in connection with a bobbin winding
  • Ersa automat can be used with high-speed industrial sewing machines and is characterized by high precision and reliability.
  • the machine according to the invention makes it possible to automatically replace empty bobbin bobbins with full bobbins even in high-speed industrial sewing machines.
  • Figure 1 is a plan view of the replaceable head of the machine.
  • Fig. 2 is a schematic view of additional facilities on the magazine.
  • FIG. 1 shows a plan view of the replaceable head 27 of the machine, which is the most important part.
  • the Exchangeable head 27 works together with a spool magazine 22 (FIG. 2) by taking full spools 2 from it and after a pneumatically effected rotation about a vertical axis of rotation 40 of the exchangeable head 27 with its longitudinal axis 39 in the axis of the gripper (bobbin case carrier)
  • the sewing machine swings in and the full bobbin 2 with the bobbin case carrier lower part 35 is inserted.
  • the interchangeable head 27 can be moved out laterally on a carriage 26, ie can be moved away from the sewing machine in the axial direction 39.
  • the interchangeable head 27 has a receptacle 34 for the bobbin case carrier 35.
  • a resilient shaft extension 37 is arranged in this receptacle 34.
  • connection for example a pawl 38
  • the connection is released between the two parts of which the bobbin case carrier usually consists, so that the bobbin case carrier lower part 35 with the bobbin 2 can be removed from the sewing machine .
  • the interchangeable head 27 is arranged to be tiltable about a horizontal axis 41.
  • a second interchangeable head 27 ' can be arranged on the slide 26 in the longitudinal axis 39 or also at an angle thereto, which makes it possible to swivel the first interchangeable head 27 with an empty coil 2 in the lower part 35 of the bobbin case carrier Insert bobbin case carrier lower part 35 'with a full bobbin 2'.
  • the interchangeable head 27 can be rotated further about its longitudinal axis 39 by means of a pneumatic adjusting cylinder 42 in order to be able to thread the thread of the bobbin 2 into the lower part 35 of the bobbin case carrier.
  • Figure 2 shows a schematic representation of additional facilities on the magazine.
  • the interchangeable head 27 transfers the empty reel 2 to a magazine rod 57, whereupon the interchangeable head 27 swivels to the side 58 of the magazine 22 for full reels 2 in order to grip a full reel.
  • a suction nozzle 61 is attached to the side of this magazine 22 and sucks in the thread hanging out of the slot 59.
  • a pair of pliers 62 is provided which can be actuated pneumatically and tensions the thread in such a way that the thread is automatically threaded when the interchangeable head 27 is pivoted through 90 °.
  • the pneumatic pliers 62 then perform a movement to release the thread, whereupon the interchangeable head 27 inserts the full bobbin 2 into the sewing machine after a 90 ° swivel.

Landscapes

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

Abstract

Une machine sert à remplacer automatiquement les canettes, notamment de machines à coudre à point noué. A cet effet, une tête de remplacement (27) comprend des leviers pneumatiques de préhension (30, 31) qui enlèvent de la machine à coudre la partie inférieure (35) du support de la boîte à canette. La tête de remplacement (27) peut pivoter ou tourner autour d'axes divers (39, 40, 41) et se déplacer sur un patin (26). Elle coopère avec un magasin (22) agencé latéralement par rapport à l'axe (39). Une deuxième tête de remplacement (27') peut également être agencée sur le patin (26) afin de saisir alternativement des canettes vides et pleines (2).A machine is used to automatically replace bobbins, especially in lockstitch sewing machines. To this end, a replacement head (27) comprises pneumatic gripping levers (30, 31) which remove from the sewing machine the lower part (35) of the support of the bobbin case. The replacement head (27) can pivot or rotate around various axes (39, 40, 41) and move on a pad (26). It cooperates with a store (22) arranged laterally with respect to the axis (39). A second replacement head (27 ') can also be arranged on the pad (26) in order to take alternately empty and full cans (2).

Description

Maschine zum automatischen Auswechseln von Unterfadenspulen für insbesondere Steppstich¬ nähmaschinen Machine for the automatic exchange of bobbins for especially lockstitch sewing machines
Die Erfindung betrifft eine Maschine zum automatischen Auswechseln von Unterfadenspulen für insbesondere Stepp¬ stichnähmaschinen mit einem Wechselkopf, der aus einem Spulenkapelträger-Unterteil der Nähmaschine eine leere Spule entnimmt und eine volle Spule einsetzt.The invention relates to a machine for automatically changing bobbin bobbins for, in particular, lockstitch sewing machines with an interchangeable head which removes an empty bobbin from a lower part of the sewing machine and supports a full bobbin.
Im Zuge der Automatisierung von Nähanlagen sind Spul¬ automaten entwickelt worden, die ein selbsttätiges Be¬ wickeln von Unterfadenspulen an Nähmaschinen bewirken. Das automatische Bewickeln der Spulen bedingt aber, um effektiv zu sein, auch einen automatischen Spulen¬ wechsel. Die DE-PS 886 115 betrifft einen Spulapparat mit einem Revolver zum automatischen Spulenwechsel und eine FadenknüpfVorrichtung.In the course of the automation of sewing systems, automatic winder machines have been developed which bring about an automatic winding of bobbins on sewing machines. However, to be effective, the automatic winding of the coils also requires an automatic reel change. DE-PS 886 115 relates to a bobbin with a turret for automatic bobbin change and a thread-knotting device.
Der Erfindung liegt die Aufgabe zugrunde, für insbesondere Steppstichnähmaschinen eine Maschine zum automatischen Auswechseln von Unterfadenspulen zu schaffen, die in Verbindung mit einem Spulen-Aufwickel-The invention has for its object to provide a machine for automatic replacement of bobbin bobbins, in particular for lockstitch sewing machines, which in connection with a bobbin winding
Ersa automat bei Schnellaufenden Industrie-Nähmaschinen einsetzbar ist und sich durch hohe Präzision und Zu¬ verlässigkeit auszeichnet.Ersa automat can be used with high-speed industrial sewing machines and is characterized by high precision and reliability.
Zur Lösung dieser Aufgabe dienen die im Anspruch 1 ge- kennzeichneten Merkmale. Die Unteransprüche enthalten zweckmäßige weitere Ausbildungen.The features characterized in claim 1 serve to achieve this object. The subclaims contain useful further training.
Durch die erfindungsgemäße Maschine ist es möglich, auch bei Schnellaufenden Industrie-Nähmaschinen ein selbsttätiges Auswechseln leerer Unterfadenspulen gegen volle Spulen zu bewerkstelligen.The machine according to the invention makes it possible to automatically replace empty bobbin bobbins with full bobbins even in high-speed industrial sewing machines.
Ein Ausführungsbeispiel der erfindungsgemäßen Vorrich¬ tung ist in den Zeichnungen dargestellt. Es zeigen:An embodiment of the device according to the invention is shown in the drawings. Show it:
Fig. 1 eine Ansicht des Wechselkopfes der Maschine in Draufsicht;Figure 1 is a plan view of the replaceable head of the machine.
Fig. 2 eine schematische Ansicht von zusätzlichen Einrichtungen am Magazin.Fig. 2 is a schematic view of additional facilities on the magazine.
Figur 1 zeigt in Draufsicht den Wechselkopf 27 der Maschine, der den wesentlichsten Teil darstellt. Der Wechselkopf 27 arbeitet zusammen mit einem Spulen- Magazin 22 (Fig. 2), indem er daraus volle Spulen 2 entnimmt und nach einer pneumatisch bewirkten Drehung um eine senkrechte Drehachse 40 des Wechselkopfes 27 mit seiner Längsachse 39 in die Achse des Greifers (Spulenkapselträger) der Nähmaschine einschwenkt und die volle Spule 2 mit dem Spulenkapselträger-Unterteil 35 einsetzt. In gleicher Weise umgekehrt erfolgt dieser Vorgang bei der Entnahme einer leeren Spule aus der Nähmaschine. Der Wechselkopf 27 ist auf einem Schlitten 26 seitlich herausfahrbar, d.h. von der Nähmaschine in Achsrichtung 39 wegfahrbar. Er besteht aus zwei pneu¬ matischen Zylindern 28, 29, die auf je einen zweiarmigen Greiferhebel 30, 31 wirken, wobei die Greiferhebel 30, 31 von Federn 32, 33 belastet sind, die das Öffnen der Greiferhebel 30, 31 bewirken, während die pneumatischen Zylinder 28, 29 zum Schließen der Greiferhebel 30, 31 dienen. Der Wechselkopf 27 hat eine Aufnahme 34 für den Spulenkapselträger 35. In dieser Aufnahme 34 ist ein federnder Wellenansatz 37 angeordnet. Durch ent- sprechende Betätigung der pneumatischen Zylinder 28,29 können die zweiarmigen Greiferhebel 30, 31 wahlweise einzeln oder auch gemeinsam betätigt werden. Bei Be¬ tätigung nur des rechten Greiferhebels 31 erfolgt die Lösung der Verbindung (z.B. einer Klinke 38) zwischen den beiden Teilen, aus denen der Spulenkapselträger üblicherweise besteht, so daß der Spulenkapselträger- Unterteil 35 mit der Spule 2 aus der Nähmaschine ent¬ nehmbar ist.Figure 1 shows a plan view of the replaceable head 27 of the machine, which is the most important part. The Exchangeable head 27 works together with a spool magazine 22 (FIG. 2) by taking full spools 2 from it and after a pneumatically effected rotation about a vertical axis of rotation 40 of the exchangeable head 27 with its longitudinal axis 39 in the axis of the gripper (bobbin case carrier) The sewing machine swings in and the full bobbin 2 with the bobbin case carrier lower part 35 is inserted. In the same way, the reverse occurs when an empty bobbin is removed from the sewing machine. The interchangeable head 27 can be moved out laterally on a carriage 26, ie can be moved away from the sewing machine in the axial direction 39. It consists of two pneumatic cylinders 28, 29, each of which acts on a two-armed gripper lever 30, 31, the gripper levers 30, 31 being loaded by springs 32, 33 which cause the gripper levers 30, 31 to open while the pneumatic ones Cylinders 28, 29 serve to close the gripper levers 30, 31. The interchangeable head 27 has a receptacle 34 for the bobbin case carrier 35. A resilient shaft extension 37 is arranged in this receptacle 34. By operating the pneumatic cylinders 28, 29 accordingly, the two-armed gripper levers 30, 31 can be operated either individually or together. When only the right gripper lever 31 is actuated, the connection (for example a pawl 38) is released between the two parts of which the bobbin case carrier usually consists, so that the bobbin case carrier lower part 35 with the bobbin 2 can be removed from the sewing machine .
ERSATZBLATT Der Wechselkopf 27 ist um eine waagerechte Achse 41 kippbar angeordnet. Auf dem Schlitten 26 kann in der Längsachse 39 oder auch in einem Winkel dazu ein zwei¬ ter Wechselkopf 27' angeordnet sein, wodurch es möglich wird, beim Ausschwenken des ersten Wechselkopfes 27 mit einer leeren Spule 2 im Spulenkapselträger-Unter¬ teil 35 einen weiteren Spulenkapselträger-Unterteil 35' mit einer vollen Spule 2' einzusetzen.REPLACEMENT LEAF The interchangeable head 27 is arranged to be tiltable about a horizontal axis 41. A second interchangeable head 27 'can be arranged on the slide 26 in the longitudinal axis 39 or also at an angle thereto, which makes it possible to swivel the first interchangeable head 27 with an empty coil 2 in the lower part 35 of the bobbin case carrier Insert bobbin case carrier lower part 35 'with a full bobbin 2'.
Der Wechselkopf 27 ist weiter um seine Längsachse 39 mittels eines pneumatischen Stellzylinders 42 drehbar, um den Faden der Spule 2 in den Spulenkapselträger- Unterteil 35 einfädeln zu können.The interchangeable head 27 can be rotated further about its longitudinal axis 39 by means of a pneumatic adjusting cylinder 42 in order to be able to thread the thread of the bobbin 2 into the lower part 35 of the bobbin case carrier.
Figur 2 zeigt in schematischer Darstellung zusätzliche Einrichtungen am Magazin. Beim Schwenken um seine senk¬ rechte Achse 40 übergibt der Wechselkopf 27 die leere Spule 2 an eine Magazinstange 57, worauf der Wechselkopf 27 zur Seite 58 des Magazins 22 für volle Spulen 2 schwenkt, um eine volle Spule zu greifen. Seitlich an diesem Magazin 22 ist eine Saugdüse 61 angebracht, die den aus dem Schlitz 59 heraushängenden Faden ansaugt. Zwischen dem Magazin 22 und der Saugdüse 61 ist eine Zange 62 vorgesehen, die pneumatisch zu betätigen ist und den Faden derart spannt, daß bei einem Schwenken des Wechselkopfes 27 um 90° der Faden selbsttätig ein¬ gefädelt wird. Die pneumatische Zange 62 führt darauf eine Bewegung zur Freigabe des Fadens aus, worauf der Wechselkopf 27 nach einer 90°-Schwenkung die volle Spule 2 in die Nähmaschine einsetzt.Figure 2 shows a schematic representation of additional facilities on the magazine. When swiveling about its vertical axis 40, the interchangeable head 27 transfers the empty reel 2 to a magazine rod 57, whereupon the interchangeable head 27 swivels to the side 58 of the magazine 22 for full reels 2 in order to grip a full reel. A suction nozzle 61 is attached to the side of this magazine 22 and sucks in the thread hanging out of the slot 59. Between the magazine 22 and the suction nozzle 61 a pair of pliers 62 is provided which can be actuated pneumatically and tensions the thread in such a way that the thread is automatically threaded when the interchangeable head 27 is pivoted through 90 °. The pneumatic pliers 62 then perform a movement to release the thread, whereupon the interchangeable head 27 inserts the full bobbin 2 into the sewing machine after a 90 ° swivel.
ERSATZBLATT REPLACEMENT LEAF

Claims

Patentansprüche: Claims:
1. Maschine zum automatischen Auswechseln von Unter¬ faden-Spulen für insbesondere Steppstichnähmaschinen mit einem Wechselkopf (27), der aus einem Spulen¬ kapselträger-Unterteil (35) der Nähmaschine eine leere Spule (2) entnimmt und eine volle Spule (2) einsetzt, dadurch gekennzeichnet, daß der Wechselkopf (27) auf einem Schlitten (26) sitzt, der seitlich der Nähmaschine in Achsrichtung (39) herausfahrbar ist,1. Machine for the automatic replacement of bobbin thread for in particular lockstitch sewing machines with an interchangeable head (27) which takes an empty bobbin (2) from a bobbin case lower part (35) of the sewing machine and uses a full bobbin (2) characterized in that the interchangeable head (27) sits on a carriage (26) which can be moved out to the side of the sewing machine in the axial direction (39),
0 daß der Wechselkopf (27) in eine zur Achse des Greifers der Nähmaschine senkrechte Drehachse (40) auf dem Schlitten (26) in die Achsrichtung (39) ein¬ schwenkbar ist, und0 that the interchangeable head (27) can be pivoted into an axis of rotation (40) perpendicular to the axis of the hook of the sewing machine on the carriage (26) in the axial direction (39), and
-* daß der Wechselkopf (27) mit Mitteln zur Aufnahme des Spulenkapselträger-Unterteils (35) mit der Spule (2) ausgestattet ist, wobei zur Entnahme dieser Teile (35, 2) weiter Mittel am Wechselkopf (27) vorgesehen sind, die zum Lösen der Verbindung der beiden Teile 0 des Spulenkapselträgers dienen.- * That the interchangeable head (27) is equipped with means for receiving the bobbin case carrier lower part (35) with the coil (2), with means for removing these parts (35, 2) being provided on the interchangeable head (27) for Release the connection between the two parts 0 of the bobbin case carrier.
2. Maschine nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zur Aufnahme des Spulenkapselträger- Unterteils (35) und der Spule (2) aus einer Aufnahme2. Machine according to claim 1, characterized in that the means for receiving the bobbin case carrier lower part (35) and the coil (2) from one receptacle
ERSATZBUTT (34) für den Spulenkapselträger-Unterteil (35) mit einem federnden Wellenansatz (37) und aus zwei zwei¬ armigen Greiferhebeln (30,31) bestehen, die mit pneu¬ matischen Zylindern (28, 29) und mit Federn (32,33) derart zusammenwirken, daß das Öffnen der Greiferhebel (30, 31) von den Federn (32,33) und das Schließen der Greiferhebel (30, 31) von den pneumatischen Zylin¬ dern (28, 29) ausgeführt wird.REPLACEMENT BUTT (34) for the bobbin case carrier lower part (35) with a resilient shaft extension (37) and two two-armed gripper levers (30, 31), which are equipped with pneumatic cylinders (28, 29) and with springs (32, 33 ) cooperate such that the opening of the gripper levers (30, 31) by the springs (32, 33) and the closing of the gripper levers (30, 31) by the pneumatic cylinders (28, 29) is carried out.
3. Maschine nach Anspruch 1 oder 2, dadurch gekennzeich¬ 0 net, daß die Drehung des Wechselkopfes (27) um die Drehachse (40) pneumatisch erfolgt.3. Machine according to claim 1 or 2, characterized gekennzeich¬ 0 net that the rotation of the interchangeable head (27) about the axis of rotation (40) is pneumatic.
4. Maschine nach Anspruch 2 oder 3, dadurch gekennzeich¬ net, daß die Greiferhebel (30, 31) wahlweise einzeln 5 oder gemeinsam betätigbar sind.4. Machine according to claim 2 or 3, characterized gekennzeich¬ net that the gripper levers (30, 31) can be operated individually 5 or together.
5. Maschine nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der eine Greiferhebel (31) an seinem freien Ende mit einer Vorrichtung zum Lösen 0 der in Gestalt einer Klinke (38) ausgeführten Ver¬ bindung der beiden Teile des Spulenkapselträgers ausgestattet ist.5. Machine according to one of claims 2 to 4, characterized in that the one gripper lever (31) is equipped at its free end with a device for releasing 0 in the form of a pawl (38) Ver¬ connection of the two parts of the bobbin case carrier .
6. Maschine nach einem der Ansprüche 1 bis 5, dadurch -> gekennzeichnet, daß der Wechselkopf (27) um eine waagerechte Achse (41) kippbar ist.6. Machine according to one of claims 1 to 5, characterized - > characterized in that the interchangeable head (27) can be tilted about a horizontal axis (41).
ERSATZBLATT REPLACEMENT LEAF
7. Maschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Wechselkopf (27) um seine Längsachse (39) mittels eines pneumatischen Stell- zylinders (42) drehbar ist, um den Faden der Spule (2) in den Spulenkapselträger-Unterteil (35) ein¬ fädeln zu können.7. Machine according to one of claims 1 to 6, characterized in that the interchangeable head (27) about its longitudinal axis (39) by means of a pneumatic actuating cylinder (42) is rotatable to the thread of the bobbin (2) in the bobbin case carrier. To be able to thread the lower part (35).
8. Maschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß auf dem Schlitten (26) in der Längsachse (39) oder in einem Winkel dazu ein zweiter Wechselkopf (27') angeordnet ist, wodurch es möglich wird, beim Ausschwenken des ersten Wechselkopfes8. Machine according to one of claims 1 to 7, characterized in that on the carriage (26) in the longitudinal axis (39) or at an angle thereto, a second interchangeable head (27 ') is arranged, which makes it possible when the first interchangeable head
(27) mit einer leeren Spule (2) im Spulenkapselträger- Unterteil (35) einen weiteren Spulenkapselträger- Unterteil (35') mit einer vollen Spule (2') bei der Drehung des Wechselkopfes (27) einzusetzen.(27) with an empty bobbin (2) in the bobbin case carrier lower part (35) to insert another bobbin case carrier lower part (35 ') with a full bobbin (2') when the interchangeable head (27) rotates.
9. Maschine nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Wechselkopf (27) beim Schwenken um seine senkrechte Achse (40) die leere Spule (2) an eine Magazinstange (57) übergibt, worauf der Wechselkopf (27) zur Seite (58) des Maga¬ zins (22) für volle Spulen (2) schwenkt, um eine volle Spule (2) zu greifen.9. Machine according to one of claims 1 to 8, characterized in that the interchangeable head (27) transfers the empty coil (2) to a magazine rod (57) when pivoting about its vertical axis (40), whereupon the interchangeable head (27) for Side (58) of the magazine (22) for full spools (2) pivots to grip a full spool (2).
10. Maschine nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß am Magazin (22) eine Saugdüse (61) angebracht10. Machine according to one of claims 1 to 9, characterized in that a suction nozzle (61) is attached to the magazine (22)
ERSATZELATT ist, die den aus dem Schlitz (59) heraushängenden Faden ansaugt,REPLACEMENT LATCH which sucks the thread hanging out of the slot (59),
daß eine pneumatisch betätigte Zange (62) den Faden derart spannt, daß bei einem Schwenken des Wechsel¬ kopfes (27) um 90° der Faden eingefädelt ist, undthat a pneumatically operated pliers (62) tension the thread in such a way that the thread is threaded when the interchangeable head (27) is pivoted through 90 °, and
daß die pneumatische Zange (62) eine Bewegung zur Freigabe des Fadens ausführt, worauf der Wechselkopf (27) die volle Spule (2) in die Nähmaschine einsetztthat the pneumatic pliers (62) perform a movement to release the thread, whereupon the replaceable head (27) inserts the full bobbin (2) into the sewing machine
ERSATZBLATT REPLACEMENT LEAF
EP90909625A 1989-06-22 1990-06-20 Automatic bobbin-winding machine, in particular for lockstitch machines Expired - Lifetime EP0479838B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90909625T ATE93285T1 (en) 1989-06-22 1990-06-20 MACHINE FOR AUTOMATIC REPLACEMENT OF BOBBINS, ESPECIALLY FOR LOCKSTITCH SEWING MACHINES.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3920461 1989-06-22
DE3943467 1989-06-22
DE3943467 1989-06-22
DE3920461 1989-06-22

Publications (2)

Publication Number Publication Date
EP0479838A1 true EP0479838A1 (en) 1992-04-15
EP0479838B1 EP0479838B1 (en) 1993-08-18

Family

ID=25882226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90909625A Expired - Lifetime EP0479838B1 (en) 1989-06-22 1990-06-20 Automatic bobbin-winding machine, in particular for lockstitch machines

Country Status (6)

Country Link
EP (1) EP0479838B1 (en)
AU (1) AU5920290A (en)
BR (1) BR9007444A (en)
DE (1) DE59002404D1 (en)
ES (1) ES2044600T3 (en)
WO (1) WO1990015894A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW262494B (en) * 1993-08-31 1995-11-11 Zyuki Kk
IT1274445B (en) * 1995-05-08 1997-07-17 Osvaldo Vezzoli CONTROL FOR THE AUTOMATIC CHANGE OF THE LOWER THREAD REEL, FOR SEWING MACHINES
DE102016005166A1 (en) * 2016-04-30 2017-11-02 Pfaff Industriesysteme Und Maschinen Gmbh Sewing machine with a bobbin case changing device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438459A (en) * 1945-06-16 1948-03-23 Richard Walsh Mcgann Sewing machine
NL93071C (en) * 1951-08-09
US3376838A (en) * 1966-02-01 1968-04-09 Ivanhoe Res Corp Bobbin changer for sewing machines
US3981256A (en) * 1975-05-09 1976-09-21 J. P. Stevens & Co., Inc. Magnetic automatic bobbin changer for sewing machines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9015894A1 *

Also Published As

Publication number Publication date
WO1990015894A1 (en) 1990-12-27
BR9007444A (en) 1992-06-16
ES2044600T3 (en) 1994-01-01
AU5920290A (en) 1991-01-08
EP0479838B1 (en) 1993-08-18
DE59002404D1 (en) 1993-09-23

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