EP1144746B1 - Kettenstich-nähmaschine - Google Patents
Kettenstich-nähmaschine Download PDFInfo
- Publication number
- EP1144746B1 EP1144746B1 EP00902469A EP00902469A EP1144746B1 EP 1144746 B1 EP1144746 B1 EP 1144746B1 EP 00902469 A EP00902469 A EP 00902469A EP 00902469 A EP00902469 A EP 00902469A EP 1144746 B1 EP1144746 B1 EP 1144746B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread
- needle
- control
- feeder
- disc
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
- D05B49/04—Take-up devices, e.g. levers, for the needle thread rotary
Definitions
- the invention relates to a chain stitch sewing machine with a a housing movable and drivable needle bar and at least a sewing needle attachable to the needle head of the needle bar, the a Needle thread from a thread spool via a thread tensioner and a thread guide device can be fed, the thread guide means one Thread take-off depending on the thread feeder controlling the needle bar stroke (see, for example, US-A-2,398,667).
- the invention is therefore based on the object of a chain stitch sewing machine to create the type described above, which by an improved Thread guide device, even with highly elastic sewing material, the sewing of perfect, smooth chain stitch seams allowed.
- the invention solves this problem in that the thread transmitter on an encoder shaft that can be driven synchronously with the needle bar drive Has encoder disk, which has an eccentric sensor curve on the circumference Thread take-up forms and with this pick-up curve between two fixed to the housing supported thread eyelets for the transverse to the encoder disc on the pickup curve protruding needle thread and / or the thread feeder for each
- a thread control is arranged downstream of the thread take-off direction, which thread control one on one synchronously to the needle bar drive driven control shaft seated control disc with a circumferential Control cam for the one supported on both sides of the control disc Has thread eyelets guided over the control disk needle thread.
- the needle thread corresponds to the course of the rotating with the encoder disc Sensor curve checked against the standing thread eyelets and in provide a thread quantity adapted to the respective stitch formation process and withdraw without considering a deadlock due to dead center to have, so that especially a thread retraction and tightening the Thread entangling is essentially made possible by the thread feeder alone becomes.
- the encoder shaft drive can be easily driven by the rotary drive of the needle bar derive and the encoder disc can be designed as a single or double disc and also with a thread wiper finger or the like for thread guidance in the area the transducer curve.
- each needle thread can be individually stabilized in its deduction and control and adapt it to the stitch formation process that belongs to it.
- This thread control is quite with a conventional thread take-up can be combined, but of course there is a better control and coordination option for the thread draw in combination with the new thread take-up device, which then has a donor disc common to all needle threads can have.
- the thread feeder and its influence on the thread take-off thus the thread run-off conditions are due to the control disks superimposed, which means that for each needle thread exactly that for the respective stitch formation process required thread take-off is adjustable.
- the control shaft is expedient as an extension of the encoder shaft trained so that a common for the thread transmitter and thread control Drive comes into being. Are several needle threads and therefore also several Thread controls provided, the control discs of all thread controls sit on one and the same control and encoder shaft.
- a two-needle chain stitch sewing machine 1 with a base 2 for Inclusion of a gripper, not shown, and the associated one Looper thread guide device has a superstructure 3 with one in one Housing 4 on needle bar 5 which is mounted in a stroke-movable manner, on the needle head 6 of which two sewing needles 7, 8 are attached.
- One serves as a needle bar drive 9 an upper drive shaft 11 engaging a crank mechanism 10 on the needle bar 5.
- the two sewing needles 7, 8 are assigned two needle threads 12, 13, which of Thread spools 14 via thread tensioner 15 and a thread guide device 16 the sewing needles 7, 8 are fed.
- the thread guide device comprises a thread take-off depending on the needle bar stroke Thread feeder 17 and additionally a thread control for each needle thread 12, 13 18, 19 for individual control of the thread take-off.
- the thread transmitter 17 consists of a sensor disc 20, which on a a drive connection 21 can be driven synchronously with the needle bar drive 9
- Encoder shaft 22 sits and with a circumferential transducer curve 23 between Two thread eyelets 24, 25 supported fixed to the housing for the two transverse to Sensor disc 20 over the pick-up curve 23 running needle threads 12, 13 projects.
- the encoder disk 20 is composed of two partial disks, between which a thread wiper finger 26 engages for thread control.
- the thread controls 18, 19 each have an extension of the Encoder shaft 22 trained and thus also with the needle bar drive 9 synchronously driven control shaft 27 seated control disk 28, 29 on which control disks have control cams 30, 31 on the circumference and with these each between two housing eyelets 32, 33 for the Project needle threads 12, 13 guided across the control disks 28, 29.
- the needle threads 12, 13 thus run in the thread guide device 16 from the thread transmitter 17 via corresponding deflection guides 34, 35 to the thread controls 18, 19 and from these via a further thread guide 36 fixed to the housing or a needle head-fixed thread guide 37 to the needle eyes.
- a suitable design of the transducer curve 23 on the one hand and the control curves 30, 31 on the other hand it is therefore possible to withdraw the needle threads 12, 13 adapt individually to the associated stitch formation process and the Needle threads in accordance with the respective thread entanglement phase Approved quantity to release and thus provide or take back and tighten the loops formed.
- This looping and - tighten runs off without noticeable effect on the material, so that a perfect chain stitch without gathering or crimping the material arises.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Description
- Fig. 1
- eine erfindungsgemäße Kettenstich-Nähmaschine in Seitenansicht und die
- Fig. 2 und 3
- diese Nähmaschine mit ihrer Nadelstange in unterer Totpunktlage bzw. in oberer Totpunktlage in Stirnansicht größeren Maßstabes.
Claims (2)
- Kettenstich-Nähmaschine mit einer in einem Gehäuse hubbewegbar und antreibbar gelagerten Nadelstange und wenigstens einer am Nadelkopf der Nadelstange befestigbaren Nähnadel, der ein Nadelfaden von einer Fadenspule über einen Fadenspanner und eine Fadenführungseinrichtung zuführbar ist, wobei die Fadenführungseinrichtung einen den Fadenabzug in Abhängigkeit vom Nadelstangenhub steuemden Fadengeber umfaßt, dadurch gekennzeichnet, daß der Fadengeber (17) eine auf einer zum Nadelstangenantrieb (9) synchron antreibbaren Geberwelle (22) sitzende Geberscheibe (20) aufweist, die umfangseitig eine exzentrische Aufnehmerkurve (23) zur Fadenaufnahme bildet und mit dieser Aufnehmerkurve (23) zwischen zwei gehäusefest abgestützte Fadenösen (24, 25) für den quer zur Geberscheibe (20) über die Aufnehmerkurve (23) verlaufenden Nadelfaden (12, 13) vorragt, und/oder daß dem Fadengeber (17) für jeden Nadelfaden (12, 13) eine Fadensteuerung (18, 19) in Fadenabzugsrichtung nachgeordnet ist, welche Fadensteuerungen (18, 19) jeweils eine auf einer zum Nadelstangenantrieb (9) synchron antreibbaren Steuerwelle (27) sitzende Steuerscheibe (28, 29) mit einer umfangseitigen Steuerkurve (30, 31) für den durch zwei beidseits der Steuerscheibe (28, 29) gehäusefest abgestützte Fadenösen (32, 33) über die Steuerscheibe (28, 29) geführten Nadelfaden (12, 13) aufweisen.
- Kettenstich-Nähmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Steuerwelle (27) als Verlängerung der Geberwelle (22) ausgebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0007699A AT410681B (de) | 1999-01-21 | 1999-01-21 | Kettenstich-nähmaschine |
AT7699 | 1999-01-21 | ||
PCT/AT2000/000015 WO2000043583A1 (de) | 1999-01-21 | 2000-01-21 | Kettenstich-nähmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1144746A1 EP1144746A1 (de) | 2001-10-17 |
EP1144746B1 true EP1144746B1 (de) | 2003-04-09 |
Family
ID=3480900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00902469A Expired - Lifetime EP1144746B1 (de) | 1999-01-21 | 2000-01-21 | Kettenstich-nähmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6405666B1 (de) |
EP (1) | EP1144746B1 (de) |
AT (1) | AT410681B (de) |
DE (1) | DE50001699D1 (de) |
WO (1) | WO2000043583A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3729717B2 (ja) * | 2000-08-28 | 2005-12-21 | ペガサスミシン製造株式会社 | 二重環縫いミシン |
US6666158B2 (en) * | 2002-02-05 | 2003-12-23 | Ching Chi Machine Co., Ltd. | Looper thread take-up apparatus externally added to outer end of lower driving shaft of a sewing machine |
US6691630B2 (en) * | 2002-02-05 | 2004-02-17 | Ching Chi Machine Co., Ltd. | Looper thread take-up apparatus of a sewing machine |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2398667A (en) | 1942-06-23 | 1946-04-16 | Union Special Machine Co | Sewing machine |
US2385960A (en) | 1944-04-11 | 1945-10-02 | Singer Mfg Co | Rotary take-up mechanism for sewing machines |
US2895441A (en) * | 1955-08-10 | 1959-07-21 | Phoenix Nahmaschinen A G Baer | Sewing machine |
JPH01199895A (ja) * | 1988-02-03 | 1989-08-11 | Shibuya Kogyo Co Ltd | 容器の洗滌方法 |
US5085159A (en) * | 1988-04-01 | 1992-02-04 | Pegasus Sewing Machine Mfg. Co., Ltd. | Needle thread feed regulating device for overseaming sewing machine |
DE69528595T2 (de) * | 1995-03-29 | 2003-06-18 | Jaguar Co., Ltd. | Überwendlich-nähmaschine |
JP3489089B2 (ja) * | 1995-09-01 | 2004-01-19 | ヤマトミシン製造株式会社 | ルーパ糸繰り装置 |
US6263812B1 (en) * | 2000-10-13 | 2001-07-24 | Ching Chi Machine Co., Ltd. | Looper thread take-up structure of sewing machine capable of very easily clearing up tangling thread |
-
1999
- 1999-01-21 AT AT0007699A patent/AT410681B/de active
-
2000
- 2000-01-21 DE DE50001699T patent/DE50001699D1/de not_active Expired - Fee Related
- 2000-01-21 EP EP00902469A patent/EP1144746B1/de not_active Expired - Lifetime
- 2000-01-21 US US09/914,738 patent/US6405666B1/en not_active Expired - Fee Related
- 2000-01-21 WO PCT/AT2000/000015 patent/WO2000043583A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AT410681B (de) | 2003-06-25 |
WO2000043583A1 (de) | 2000-07-27 |
DE50001699D1 (de) | 2003-05-15 |
ATA7699A (de) | 2002-11-15 |
EP1144746A1 (de) | 2001-10-17 |
US6405666B1 (en) | 2002-06-18 |
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