EP0122222B1 - Nähmaschine - Google Patents

Nähmaschine Download PDF

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Publication number
EP0122222B1
EP0122222B1 EP84810064A EP84810064A EP0122222B1 EP 0122222 B1 EP0122222 B1 EP 0122222B1 EP 84810064 A EP84810064 A EP 84810064A EP 84810064 A EP84810064 A EP 84810064A EP 0122222 B1 EP0122222 B1 EP 0122222B1
Authority
EP
European Patent Office
Prior art keywords
cam
shape
feeler
sewing machine
needle holder
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
EP84810064A
Other languages
English (en)
French (fr)
Other versions
EP0122222A1 (de
Inventor
Olindo Baruffa
Antonio Jimenez
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.)
Mefina SA
Original Assignee
Mefina SA
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 Mefina SA filed Critical Mefina SA
Publication of EP0122222A1 publication Critical patent/EP0122222A1/de
Application granted granted Critical
Publication of EP0122222B1 publication Critical patent/EP0122222B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/22—Work-feeding means with means for setting length of stitch
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/02—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement

Definitions

  • the subject of the invention is a sewing machine, comprising lateral control and positioning members of the needle holder bar and of adjusting the amplitude and the direction of movement of the material to be sewn.
  • Swiss Patent No. 277.952 a sewing machine is known, in which the lateral movements of the needle bar and the advancement of the conveyor are controlled by two cams, removably fixed on a drive shaft, in continuous movement, replaceable with other cams and interchangeable with each other.
  • German patent application No. 27 34404 is a machine of the same type in which the lateral position of the needle bar is determined by the unique profile of a cam controlled by a controlled electric motor.
  • the feeler cooperating with this cam profile is periodically raised by another independent cam of this motor to allow the latter to take the desired angular position, without having to overcome the reaction forces of the feeler.
  • the machine according to the invention is characterized in that, on the one hand, it comprises a first controlled motor actuating at least two cam profiles, the first profile allowing, in contact with a first feeler to ensure the lateral positioning of the needle bar, and the second profile cooperating with the first profile against which a third feeler is supported to disengage the needle bar, and on the other hand a second servo motor actuating at least one cam profile determining, in contact with a fourth feeler, the amplitude of the advance or retreat of the material to be sewn.
  • the sewing machine comprises a tubular needle holder bar 1, slidably mounted in a pivoting cradle 2, the longitudinal reciprocating movement of the needle holder bar 1 being provided by a pin 3, coupled to a connecting rod 4, actuated by an eccentric plate 5, mounted on the main drive shaft 12 of the machine.
  • a cam 29 has two complementary profiles B and C for controlling the zigzag seam. To do this, the cam 29 is subjected to an alternating oscillating movement of amplitude determined by a controlled motor 28. In straight stitching, the lateral positioning of a needle fixed to the needle bar 1 is also controlled by the angular position. of the cam 29, determined by the servo motor 28. This servo-control makes it possible to obtain infinite variations in the width of the stitch, respectively in the lateral positioning of the needle holder bar.
  • the control of the transverse movement of the needle holder bar is provided by the profile C of the cam 29, against which a feeler 37 secured to the upper end of the cradle 2 is supported, while the profile B serves as a play follower and adjuster, against which a feeler 39 mounted on a lever arm 38 pivotally mounted on the oscillation axis 6 of the cradle 2 is supported, the feelers 37 and 39 being held in contact with the profiles of cam B, C by an opposing spring 40.
  • a control member 26 for disengaging the needle holder bar 1 is pivotally mounted on a transverse axis 24 inside the needle holder bar 1.
  • a rod 18 has a ramp 22, which, when inserted against the action of a return spring 25, between the internal wall of the needle holder bar 1 and the head 23 of the control member 26, makes it pivot on the axis 24. Therefore, the shutter 17 of the control member 26 pushes the stud 9 out of the opening 11 against the action of the spring 10. It follows that the pin 3 slides on the needle bar 1 , which remains in a high position under the action of a spring, its clamping ring 13 being retained by a stop.
  • the cam 29 comprises a third profile A 1 ' A 2 , A 3 , against which a feeler 30 of a lever 31 is supported, articulated on an axis 21 (fig. 2).
  • the retaining stop of the clamping ring 13 can advantageously be replaced by the support member 32, provided that the upper end of the rod 18 (fig. 7) has a clearance 20, allowing the member support 32 to retain the needle holder bar 1 in the clutch position, when the feeler 30 bears on position A 2 of the 3rd cam profile.
  • the lateral position of the needle bar 1 remains determined by an extension D, E of the cam profiles B and C, when the feeler 30 is in position A 2 or A 3 .
  • cam 29 could still perform other functions such as adjusting the tension of the thread for example.
  • a cam 83 angularly positioned by a servo motor 70 controls the amplitude of the advance and the retraction of the transport claw 47, secured to a claw support 46 by means of a feeler 63, integral with a lever 64 and in contact with the profile 62 of the cam 83, this command being transmitted by the lever 64, articulated to the frame, determining by means of links 65 and 66 the angular position of a connecting rod 61, the connecting rods 66 and 61 being integral with the same axis 67, pivoted in the frame.
  • the angular position of the link 61 determines the direction and the amplitude of the movement of the claw support 46 by means of links 57, 52, the latter being connected by an axis 54 to a joint 55, 56, the common axis 53 of the rods 57, 52 being actuated by an eccentric 50 and a rod 51.
  • a lever 94 articulated to the frame provided with a feeler 95 in contact with a profile 97, parallel to a profile 62, ensures contact with feeler 63 against the profile 62, under the effect of 'a return spring 96 connecting the lever 64 to the lever 94, thus forming a parallelogram, constituting a backlash device with substantially constant torque.
  • a second profile 93 of the cam 83 controls by a lever 85 the angular position of a part 87, pivoted in a bearing 92 of the frame and orientates a plane 88, integral with the part 87 , angularly with respect to the traditional sewing direction of the claw 47, so as to produce a lateral displacement of the claw support 46, against the action of a return spring, due to the oscillation produced by the eccentric 89 of a fork 69, pivoting on an axis 68, the fork 69 comprising balls 86 disposed between the claw support 46 and the plane 88.
  • the lateral displacement of the claw support 46 takes place perpendicular to the traditional sewing direction in one or the other direction (left or right, see FIG. 8).
  • the plane 88 could oscillate with the part 87 in the bearing 92 of the frame by means of an eccentric, the amplitude and the direction of the lateral movement of the claw support 46 being determined by the position of the balls 86 along the plan 88.
  • the claw support 46 is supported on a ball joint support rod 45, in order to allow both longitudinal and transverse displacement or simultaneous transverse and longitudinal displacement of claw support 46.
  • an eccentric cam 41 secured to the lower shaft 42 of the machine actuates a lever 43 pivoted on an axis 44, secured to the lower frame, ensuring the raising of a claw support 46 by the intermediate of the ball-and-socket support rod 45.
  • the lever 43 By moving the lever 43 to the left of FIG. 8, on the axis 44 by means of the manual pusher 49, the lever 43 comes to rest on a cylindrical element 48. This results in a interruption of the transport of the fabric by the claw 47, because there is no longer any rise in the claw, the latter remaining below the seam plane, following the erasure of the ball-and-socket support rod 45 (see Figure 13).
  • F 1 corresponds to the adjustment of the amplitude of the stitch length during reverse transport from 0 to maximum M i , the profile 93 of the cam 83 maintaining the plane 88 parallel to the traditional sewing direction.
  • F 2 corresponds to the forward adjustment of the length of stitch 0 to the maximum M 2 , the profile 93 of the cam 83 keeping the plane 88 parallel to the traditional sewing direction.
  • F 3 corresponds to a bias movement of a forward seam of variable stitch length combined with a lateral movement to the left with the intervention of the lever 85, actuated by the profile 93 of the cam 83.
  • F 4 corresponds to a fine adjustment area before the rear, the slope of the profile 62 of the cam 83 being reduced to allow more precise adjustment of small stitch lengths, for the same angle of oscillation of the cam 83 as in F 1 and F 2 , by example for sewing bumblebees, buttonholes, etc., the profile 93 of cam 83 maintaining the plane 88 parallel to the traditional sewing direction.
  • F 6 corresponds to the adjustment of the amplitude of the lateral transport from a maximum M 3 to the right to a maximum M 4 to the left via a position corresponding to zero transport.
  • the synchronization of the various control members is ensured between the main drive shaft 12 and the lower shaft 42 by the belt 90 and under the control of a servo disk 91, mounted on one of these shafts.
  • the slave motors can be managed by one or more microprocessors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Claims (6)

1. Nähmaschine, mit zwei gesteuerten Elektromotoren (28, 70), welche mittels Nocken (29, 83) beziehungsweise auf Steuerorgane für die seitliche Einstellung der Nadelstange und auf Steuerorgane zum Regulieren der Amplitude und der Richtung der Verschiebung des zu nähenden Materials wirken, dadurch gekennzeichnet, dass der erste gesteuerte Motor (28) zumindest zwei Nockenprofile (C und A 1, A2, A3) antreibt, wobei das erste Profil (C) es erlaubt, im Kontakt mit einem ersten Fühler (37), die seitliche Einstellung der Nadelstange (1) sicherzustellen, und wobei das zweite Profil (A1, A2, A3) mit einem zweiten Fühler (30) zusammenwirkt, um das Auskuppeln der Nadelstange (1) zu bewirken, wenn diese in einer genau bestimmten, durch das erste Profil kontrollierten Lage ist.
2. Nähmaschine gemäss Anspruch 1, dadurch gekennzeichet, dass zumindest ein zusätxliches, von einem der gesteuerten Motoren (28, 70) angetriebenes Profil zumindest eine weitere Funktion der Nähmaschine bewerkstelligt.
3. Nähmaschine gemäss Anspruch 1, dadurch gekennzeichnet, dass sie ein drittes, mit dem ersten Profil (C) fest verbundenes und zu diesem merklich paralleles Profil (B) aufweist, und in Berührung dessen ein zweiter Fühler (38) es erlaubt, den Kontakt des ersten Fühlers (37) auf dem Profil (C) sicherzustellen.
4. Nähmaschine gemäss Anspruch 1, dadurch gekennzeichnet, dass der erste Fühler (37) formschlüssig mit dem Schwenkträger (2) ist, mit welchem die Nadelstange (1) verbunden ist.
5. Nähmaschine gemäss Anspruch 1, in welcher der zweite Motor (70) einen Steuernocken (83) für einen Transportgreifer (47) für das zu nähende Material antreibt, dadurch gekennzeichnet, dass der benannte Nocken (83) zwei Nockenprofile (62, 97) aufweist, mit welchen zwei mit zwei Hebeln (64 und 94) fest verbundene Fühler (63 und 95) zusammenwirken, wobei die zwei Hebel (64 und 94) miteinander über eine Rückzugfeder (96) derart verbunden sind, dass ein Fühler (95) als Folge- und Spielausgleichsorgan dient.
6. Nähmaschine gemäss den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass der zweite gesteuerte Motor (70) gleichzeitig zumindest ein zweites Nockenprofil (93) antreibt, welches in Berührung mit einem Hebel (85) die seitliche Verschiebung des zu nähenden Materials steuert, wobei der Hebel (85) in Berührung mit dem zweiten Profil (93) die Winkelstellung eines in einem Lager (92) des Rahmens drehenden Stückes (87) derart steuert, dass eine zum Stück (87) gehörende Fläche (88) winkelmässig gegenüber der herkömmlichen Nährichtung des Greifers (47) gerichtet wird, wobei ein mit einer Achse (42) formschlüssiger Excenter (89) eine Gabel (69) auf einer Achse (68) zum Schwingen bringt, welche Gabel zumindest ein Stützorgan (86) aufweist, das zwischen der Greiferauflage (46) und der Fläche (88) entgegen der Wirkung einer Rückzugfeder angeordnet ist, wobei die Amplitude und die Richtung der seitlichen Verschiebung der Greiferauflage (46) in Abhängigkeit der Stellung der Fläche (88) verändert wird.
EP84810064A 1983-02-10 1984-02-06 Nähmaschine Expired EP0122222B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH737/83A CH652425A5 (fr) 1983-02-10 1983-02-10 Machine a coudre.
CH737/83 1983-02-10

Publications (2)

Publication Number Publication Date
EP0122222A1 EP0122222A1 (de) 1984-10-17
EP0122222B1 true EP0122222B1 (de) 1987-11-04

Family

ID=4194032

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84810064A Expired EP0122222B1 (de) 1983-02-10 1984-02-06 Nähmaschine

Country Status (10)

Country Link
US (1) US4619214A (de)
EP (1) EP0122222B1 (de)
JP (1) JPS60500702A (de)
AU (1) AU565759B2 (de)
CA (1) CA1278221C (de)
CH (1) CH652425A5 (de)
DE (1) DE3467195D1 (de)
ES (1) ES529602A0 (de)
WO (1) WO1984003110A1 (de)
ZA (1) ZA84960B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531630C1 (de) * 1985-09-05 1986-12-18 Dorina Nähmaschinen GmbH, 7500 Karlsruhe Vorschubeinrichtung an einer Naehmaschine
SE454894B (sv) * 1986-03-11 1988-06-06 Husqvarna Ab Anordning av tygframmatare i en symaskin
US5094180A (en) * 1990-12-26 1992-03-10 C & W Sewing Machine Attachment Co., Inc. Apparatus for dynamically changing stitch length in a double lock stitch sewing machine
JP3723970B2 (ja) * 1999-01-18 2005-12-07 ブラザー工業株式会社 ミシン
JP2006517449A (ja) * 2003-02-12 2006-07-27 ケーナー，ラルフ・ジェイ キルティング方法および装置
US7540845B2 (en) * 2003-09-05 2009-06-02 Boston Scientific Scimed, Inc Medical device coil
CN107326555B (zh) * 2017-08-07 2020-01-31 杰克缝纫机股份有限公司 一种缝纫机
CN112095232A (zh) * 2020-09-21 2020-12-18 福建省华昂体育用品有限公司 一种新型双针高头车针车

Family Cites Families (17)

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Publication number Priority date Publication date Assignee Title
DE177846C (de) *
CH329689A (it) * 1954-04-05 1958-05-15 Vigorelli Arnaldo Spa Macchina per cucire e ricamare
DE1760051A1 (de) * 1964-11-20 1971-11-18 Union Special Maschinenfab Einstellmittel fuer in der Vorschubrichtung umkehrbaren Differential-Stoffvorschub
BE748857A (en) * 1970-04-13 1970-09-16 Her Majesty Ind Inc Electronically synchronised sewing machine with separate nee - having no mechanical linkage between
JPS5317461A (en) * 1976-07-30 1978-02-17 Janome Sewing Machine Co Ltd Electronic control sewing machine
DE2647763C2 (de) * 1976-10-22 1982-05-06 Dorina Nähmaschinen GmbH, 7500 Karlsruhe Nähmaschine zur Erzeugung aufeinanderfolgender Stiche von Zierstichmustern
US4284016A (en) * 1977-06-27 1981-08-18 Maruzen Sewing Machine Co., Ltd. Multiple pattern sewing machine
US4120254A (en) * 1977-09-14 1978-10-17 The Singer Company Direct drive feed system for sewing machines
JPS54102511A (en) * 1977-12-28 1979-08-13 Denki Onkyo Co Ltd Method of controlling electronic sewing machine
US4326472A (en) * 1978-02-10 1982-04-27 Brother Kogyo Kabushiki Kaisha Needle oscillating mechanism for a sewing machine
US4195583A (en) * 1978-04-24 1980-04-01 The Singer Company Releasing mechanism for cam followers in a zigzag sewing machine
JPS5940471B2 (ja) * 1978-06-14 1984-10-01 蛇の目ミシン工業株式会社 電子ミシンにおける送り制御装置
DE2942844A1 (de) * 1979-10-24 1981-05-07 Pfaff Haushaltsmaschinen GmbH, 7500 Karlsruhe Steuereinrichtung fuer den antrieb eines schrittmotors zur verstellung der ueberstichbreite und/oder vorschublaenge einer naehmaschine
JPS56148380A (en) * 1980-04-22 1981-11-17 Hatsupii Sewing Machine Seizou Sewing machine
IT1129330B (it) * 1980-10-23 1986-06-04 Vigorelli Arnaldo Spa Macchina per cucire con griffa traslabile in senso trasversale
US4327654A (en) * 1981-03-02 1982-05-04 The Singer Company Basting stitch overthrow system
US4385573A (en) * 1981-05-11 1983-05-31 The Singer Company Single actuator control of multiple sewing instrumentalities

Also Published As

Publication number Publication date
ZA84960B (en) 1985-04-24
ES8502495A1 (es) 1985-01-01
WO1984003110A1 (en) 1984-08-16
CA1278221C (fr) 1990-12-27
CH652425A5 (fr) 1985-11-15
AU565759B2 (en) 1987-09-24
AU2432684A (en) 1984-08-30
ES529602A0 (es) 1985-01-01
DE3467195D1 (en) 1987-12-10
US4619214A (en) 1986-10-28
EP0122222A1 (de) 1984-10-17
JPS60500702A (ja) 1985-05-16

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