EP0213084B1 - Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl. - Google Patents

Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl. Download PDF

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Publication number
EP0213084B1
EP0213084B1 EP86830121A EP86830121A EP0213084B1 EP 0213084 B1 EP0213084 B1 EP 0213084B1 EP 86830121 A EP86830121 A EP 86830121A EP 86830121 A EP86830121 A EP 86830121A EP 0213084 B1 EP0213084 B1 EP 0213084B1
Authority
EP
European Patent Office
Prior art keywords
band
tape
knife
sewing machine
pressure
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
EP86830121A
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English (en)
French (fr)
Other versions
EP0213084A1 (de
Inventor
Ferruccio Sacchi
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.)
RIM-SERVICE TORINO Srl
Original Assignee
RIM-SERVICE TORINO Srl
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Filing date
Publication date
Application filed by RIM-SERVICE TORINO Srl filed Critical RIM-SERVICE TORINO Srl
Publication of EP0213084A1 publication Critical patent/EP0213084A1/de
Application granted granted Critical
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Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D05B37/04—Cutting devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/06—Presser feet

Definitions

  • This invention concerns an improvement in or relating to pressure shoes for sewing machines, and in particularto a pressure shoe provided with a builtin cutting device.
  • the pressure shoes presently used for said operation are pressure shoes designed for the passage of the elastic band only, which is tensioned by means of a special device, and cutting of the band at the end of operations is performed by means of a separate cutting device, close to the pressure shoe, nevertheless separate therefrom.
  • a device of this type is shown in the U.S. Patent 3.648.632, adapted for cutting strips of different kinds, wherein the cutting device is positioned upstream of the needle path with respect to the feeding direction of the sewing machine.
  • An object of this invention resides in obviating the aforeasaid drawbacks and providing a simple and practical device whereby a band or tape can be cut at a really minimum distance away from the needle, so that a suitable overlap can be provided together with adequate strength of the seam, also when the latter is tensioned, while the junction that has to be provided is disguised in an optimized way. Obviously, obtaining a short free stretch of band or tape is convenient also in case the latter needs not to be overlapped.
  • the pressure shoe comprises a cutting device and a pressure pad provided with a slot at right angle to the feeding direction of said band or tape and upstream of the intersection point of the sewing needle path with said band or tape with respect to the feeding direction, said band or tape being passed through said slot from the top down, underneath said pressure pad, said cutting device being comprised of a counterknife fastened to an edge of said slot and a pivoting knife cooperating with said counter-knife, said knife being actuated through suitable actuating means against said counter-knife or cutting the band or tape.
  • said pressure pad is provided with a small tube or duct for through passage of an air flow, acting behind said band or tape, when said band or tape is inserted through said slot in order to ease through passage and positioning thereof against counter-knife.
  • a further feature of the subject pressure shoe resides in that the cutting of said band or tape by means of said cutting device is performed at a distance of 0.5 to 1.5 cm away from the intersection point of sewing needle path with said band or tape, preferably of about 1 cm.
  • the pressure shoe according to this invention is further characterized in that according to an embodiment of the invention, the pivoting knife is horizontally mounted at a lower end of a substantially vertical pivot shaft movably inserted within a bearing support provided on pressure pad for a scissor-like action on said band or tape inserted between said knife and the counter-knife; at the upper end of said pivot shaft there being provided a substantially horizontal actuating member, the free end thereof being connected to said actuating means (mechanical, pneumatic and/or the like) for said pivoting knife actuation; resilient means provided to ensure the necessary pressure upon said knife being inserted between support and knife.
  • the pivoting knife is horizontally mounted at a lower end of a substantially vertical pivot shaft movably inserted within a bearing support provided on pressure pad for a scissor-like action on said band or tape inserted between said knife and the counter-knife; at the upper end of said pivot shaft there being provided a substantially horizontal actuating member, the free end thereof being connected to said actuating means (mechanical
  • said pressure pad is provided with a side positioning member for said band or tape, comprising a steel wire member fastened sideways to the counter-knife and protruding downwards therefrom in order to provide a side abutment for said band or tape being fed through and underneath said pressure pad.
  • the subject sewing machine pressure shoe is a substantially conventional pressure shoe 1, wherein a slot 5 is designed to be provided on the pressure pad 3 thereof, in a direction at right angle to the moving direction of elastic band 5' (fig. 1 a stationary cutting block or counterknife 7 being provided on the downstream edge of said slot, while on the upstream edge there is mounted a pivoting knife connected to a suitable stationary support 9 wherein said pivoting knife can rotate with the desired angle.
  • Said pivoting knife essentially comprises an upward pivot shaft 11, adapted to rotate, as already said, within the suitable cylindrical seat of stationary support member 9, and at the lower end of said pivot shaft a cutting blade 13 is fastened, at right angle to pivot shaft 11, while at the top end an actuating member 15 is fastened, also at right angle to pivot shaft 11.
  • actuating means which can be mechanical, pneumatic, and/or the like, according to what the user desires.
  • said means are mechanical means (member 16 connected to actuating member 15).
  • the stationary cutter 7 is fastened to the pressure pad 3 through suitable fastening means 17, which are shown as screws in the drawing.
  • the stationary support member 9 as well is fastened to pressure pad 3 through suitable fastening means, for instance the screws 19.
  • a coil spring 21 which acts upon cutting blade 13, in order to subject said blade to the desired pressure, which is required to cut the elastic band in a proper manner.
  • the pressure shoe is provided with a small air injection tube 23, which opens at 25 in slot 5; said air stream provides an easing function for passage of elastic band 5' through said slot, and it provides for positioning the same against cutting block 7.
  • steel wire 27 which projects sideways from cutting block 7 and underneath pressure pad 3; said steel wire pin 27 providing an abutment member for the elastic band, in order to avoid drifting thereof from the correct position.
  • the elastic band 5' is inserted from above through slot 5 and therefrom it is eased to pass underneath pressured pad 3 according to the normal feed direction thereof (fig. 1).
  • the elastic band is tensioned in order to provide for curling of the hem of the garment where the band is being applied.
  • the elastic band has to be cut in order to perform the overlap possibly necessary to complete the ring-like fastening thereof.
  • said stretch of elastic band free of tension, included between the cut and the intersection point of sewing needle path A with the elastic band (fig. 1) is extremely small, of the order ot about 1 cm, whereby the overlap performed over such a length is absolutely unobtrusive and does not impair quality of the garment.
  • the subject pressure shoe besides the application of an elastic band, can be used for sewing a tape of a stiff lace.

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

Claims (5)

1. Stoffdrückerfuß für Nähmaschinen, eingerichtet für das Annähen eines Bandes oder Streifens an ein Werkstück, wobei der Stoffdrückerfuß mit einer Drückerkufe (3) versehen und zur Anbringung an einer Nähmaschine eingerichtet ist, die mit einer sich entlang einer Bahn bewegenden Nähnadel versehen ist und eine Schneideeinrichtung umfaßt, um das Band oder den Streifen mit Bezug auf die Vorschubrichtung der Nähmaschine oberhalb der Nadelbahn abzuschneiden, dadurch gekennzeichnet, daß an der Drückerkufe (3) rechtwinklig zu der Vorschubrichtung des Bandes oder Streifens (5') und mit Bezug auf die Vorschubrichtung oberhalb des Kreuzungspunktes der Nähnadelbahn (A) mit dem Band oder Streifen (5') ein Schlitz (5) vorgesehen ist, das Band oder der Streifen (5') von oben abwärts durch den Schlitz (5) hindurch unter die Drückerkufe (3) geführt ist, die Schneideeinrichtung aus einem an einer Kante des Schlitzes (5) befestigten Gegenmesser (7) und einem mit dem Gegenmesser (7) zusammenwirkenden drehbar gelagerten Messer (13) besteht, das Messer (13) durch ein geeignetes Betätigungsmittel (16) gegen das Gegenmesser (7) zum Abschneiden des Bandes oder Streifens (5') betätigt ist.
2. Stoffdrückerfuß für Nähmaschinen nach Anspruch 1, dadurch gekennzeichnet, daß die Drückerkufe (3) mit einem Rohr oder Kanal (23) für den Durchtritt eines Luftstroms versehen ist, der bei (25) hinter dem Band oder Streifen (5') einwirkt, wenn das Band oder der Streifen durch den Schlitz (5) eingelegt ist, um dessen Durchtritt und Positionierung gegenüber dem Gegenmesser (7) zu erleichtern.
3. Stoffdrückerfuß für Nähmaschinen nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das Abschneiden des Bandes oder Streifens (5') mittels der Schneideeinrichtung in einem Abstand von 0,5 bis 1,5 cm, vorzugsweise von etwa 1 cm, entfernt von dem Kreuzungspunkt der Nähnadelbahn (A) mit dem Band oder Streifen durchgeführt wird.
4. Stoffdrückerfuß für Nähmaschinen nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das drehbar gelagerte Messer (13) horizontal an einem unteren Ende einer im wesentlichen vertikalen Drehwelle (11) befestigt ist, die beweglich innerhalb eines an der Drückerkufe (3) vorgesehenen Lagergestells (9) eingesetzt ist, für eine scherenähnliche Wirkung auf Band oder Streifen (5'), eingeführt zwischen Messer (13) und Gegenmesser (7); daß an dem oberen Ende der Drehwelle (11) ein im wesentlichen horizontales Betätigungsglied (15) vorgesehen ist, dessen freies Ende an das Betätigungsmittel (16) (mechanisch, pneumatisch und/oder dgl.) für die Betätigung des drehbar gelagerten Messers angeschlossen ist; daß zwischen dem Gestell (9) und dem Messer (13) eingesetzte Federmittel (21) vorgesehen sind, um den erforderlichen Druck auf das Messer (13) sicherzustellen.
5. Stoffdrückerfuß für Nähmaschinen nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß die Drückerkufe (3) mit einem Positionierglied (27) für das Band oder den Streifen (5') versehen ist, welches ein seitlich von dem Gegenmesser (7) befestigtes Stahldrahtteil umfaßt und davon abwärts vorspringt, um ein Seitenauflager für das Band oder den Streifen (5') vorzusehen, das bzw. der durch und unter die Drückerkufe (3) geführt ist.
EP86830121A 1985-05-13 1986-05-12 Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl. Expired EP0213084B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8567434A IT1215157B (it) 1985-05-13 1985-05-13 Perfezionamento a piedini per macchine da cucire
IT6743485 1985-05-13

Publications (2)

Publication Number Publication Date
EP0213084A1 EP0213084A1 (de) 1987-03-04
EP0213084B1 true EP0213084B1 (de) 1989-08-16

Family

ID=11302360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86830121A Expired EP0213084B1 (de) 1985-05-13 1986-05-12 Stoffdrückerfuss für Nähmaschinen mit einer Schneideinrichtung für ein eingelegtes Band od. dgl.

Country Status (3)

Country Link
EP (1) EP0213084B1 (de)
DE (1) DE3665083D1 (de)
IT (1) IT1215157B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021425A1 (de) * 2006-05-05 2007-11-08 Zsk Stickmaschinen Gmbh Trenn- und Positioniereinrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE23750C (de) * NÄHMASCHINENFABRIK JUNKER & RUH in Karlsruhe, Baden Neuerungen an dem unter Nr. 21818 patentirten Apparat zum Aufnähen von Soutache für Nähmaschinen
US3468269A (en) * 1967-05-01 1969-09-23 Frederic P Worthen Method and apparatus for cutting tape in sewing machine
US3648632A (en) * 1968-11-21 1972-03-14 Quick Service Textiles Apparatus for feeding and cutting strip material
IT1002361B (it) * 1973-12-27 1976-05-20 Rimoldi Virginio E C Spa Dispositivo per tagliare ed inse rire una fettuccia sotto il piedi no pressore di una macchina per cucire
IT1123232B (it) * 1979-09-20 1986-04-30 Rockwell Rimoldi Spa Dispositivo rifilatore perfezionato del tessuto per macchine per cucire

Also Published As

Publication number Publication date
EP0213084A1 (de) 1987-03-04
IT8567434A0 (it) 1985-05-13
DE3665083D1 (en) 1989-09-21
IT1215157B (it) 1990-01-31

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