EP0499651A1 - Machine à coudre - Google Patents
Machine à coudre Download PDFInfo
- Publication number
- EP0499651A1 EP0499651A1 EP91102114A EP91102114A EP0499651A1 EP 0499651 A1 EP0499651 A1 EP 0499651A1 EP 91102114 A EP91102114 A EP 91102114A EP 91102114 A EP91102114 A EP 91102114A EP 0499651 A1 EP0499651 A1 EP 0499651A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sewing machine
- presser foot
- needle plate
- sewing
- stitch
- 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.)
- Withdrawn
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000004744 fabric Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 6
- 238000007906 compression Methods 0.000 abstract description 6
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 238000005056 compaction Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
Images
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
Definitions
- the invention relates to a sewing machine with a throat plate, a feed dog movable in a throat plate recess below the throat plate, and a presser foot movable against the throat plate, against whose side facing the feed dog the material is intermittently pressed by the top of the throat plate transporter top as the feed dog moves forward.
- the present invention is concerned with the problem of seam fixation at a seam end. This problem occurs particularly with chain sewing machines or interlock sewing machines. Once the seam has been sewn, the end of the seam must be fixed before cutting the thread. You can sew a piece backwards, but this requires a not inconsiderable effort for the reverse sewing operation, especially with chain sewing machines. For example, the direction of the link tongue must be reversed.
- the problem on which the invention is based is therefore to provide a relatively simple measure, in particular in the case of an interlock sewing machine, with which it is possible to securely fix the seam end.
- the invention provides a device designed as a stitch compactor for fixing the end of a seam, which suspends the material transport when the sewing machine is otherwise running.
- the measure according to the invention can be implemented in various ways, and in the following, specific suggestions will be given:
- the presser foot and the feed dog move synchronously in such a way that the feed dog is moved in a "rounded rectangular shape" such that the jagged top side of the feed dog protrudes a little above the top side of the throat plate through a corresponding recess during a sewing material feed stroke is moved forward to then be lowered, retracted and moved up again.
- the presser foot presses the material down against the feed dog. A defined forward movement of the sewing material is thus achieved.
- stitch compression One can now basically think of setting up the feed dog in such a way that it remains below the stitch plate during the subsequent fixation of the seam end referred to as "stitch compression".
- the construction required for this is complex.
- the stitch compactor has an adjustable stop device, which in a first state releases the full working stroke of the pretensioned presser foot, and in a second state limits the working stroke of the presser foot in such a way that the presser foot is no more than one for the feed dog is able to approach a predetermined distance. This ensures that the material is no longer jammed between the feed dog and presser foot.
- Clamping the material during stitch compaction ensures that the material stops completely. While the invention basically also includes the possibility of preventing transport only by stopping the presser foot in a raised position so that the feed dog cannot grip the sewing material properly, further transport is absolutely impossible by clamping the sewing material.
- the actuation of the stop plate can be achieved particularly easily if a lever member is arranged on the side of the axle facing away from the stop plate, the end of which is coupled to an actuating element.
- the actuating element can be a pneumatic piston-cylinder unit.
- This piston-cylinder unit is coupled to a switch, so that when the switch is actuated, the stop plate of the locking element is pivoted in such a way that the stop plate presses the sewing material upwards against the presser foot and, at the same time, a further sewing material transport through a certain minimum distance between the presser foot and the feed dog prevented.
- the desired stitch compression can thus be achieved.
- FIG. 1 The sewing point of an interlock sewing machine shown schematically in Fig. 1 shows a part of a needle plate 2, on the top of which there is an up and down movable presser foot 4, while on the underside of the needle plate 2 there is a feed dog 6, which in a closed path K is moved in such a way that the gripping teeth 10 located on the top of the transporter are moved intermittently through the region of a recess 12 in the throat plate 2.
- a locking element 14 is provided to implement the stitch compression, which is partially received in a further recess 16 of the stitch plate 2.
- the locking element 14 contains a pneumatic cylinder 18 with a piston 20, the free end of which is articulated to one end of an angle lever 22.
- the other end of the angle lever 22 is fixedly connected to an axis of rotation 24, as can be seen in detail from the top view in FIG. 3.
- the two outer ends of the axis of rotation 24 are mounted in bearing recesses, not shown here, in the region of the throat plate.
- a stop plate 26 is located on the side of the axis 24 facing away from the angle lever 22.
- a locked state of the locking element 14 is shown in FIG. 2. This means that the piston 20 is moved into the pneumatic cylinder 18 so that the angle lever 22 is pivoted downward. As a result, the angle lever has left the recess 16 at the level of the throat plate 2, while the stop plate 26 has also been pivoted upwards in the clockwise direction, that is to say it projects over the top of the throat plate 2.
- the end of the stop plate 26 thus blocks the stroke of the presser foot 4.
- the presser foot 4 equipped with the elongated hole 5 for the needle 8 cannot go through the usual full working stroke during its downward stroke, but remains a bit above the other end position.
- the arrangement is constructed such that the front edge of the stop plate 26 not only prevents the lower end of the presser foot 4 from moving further downwards, but also the sewing material S. presses against the underside of the presser foot 4, so the material S is clamped on the presser foot 4. Even if the gripping teeth 10 on the top of the feed dog 6 now brush slightly past the underside of the sewing material S, the sewing material S is securely clamped between the presser foot 4 and the stop plate 26, so that further transport of the sewing material S is excluded.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP91102114A EP0499651A1 (fr) | 1991-02-14 | 1991-02-14 | Machine à coudre |
| JP2796892A JPH04319387A (ja) | 1991-02-14 | 1992-02-14 | ミシン |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP91102114A EP0499651A1 (fr) | 1991-02-14 | 1991-02-14 | Machine à coudre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0499651A1 true EP0499651A1 (fr) | 1992-08-26 |
Family
ID=8206406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91102114A Withdrawn EP0499651A1 (fr) | 1991-02-14 | 1991-02-14 | Machine à coudre |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0499651A1 (fr) |
| JP (1) | JPH04319387A (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10001611A1 (de) * | 2000-01-17 | 2001-08-02 | Schmale Holding Gmbh & Co | Verfahren und Vorrichtung zum maschinellen Verriegeln einer Kettenstichnaht |
| DE19719372C2 (de) * | 1997-05-07 | 2001-12-06 | Altin Naehtechnik Prototyping | Verfahren und Vorrichtung zur Nahtendensicherung durch Einziehen der Fadenkette an Ein- und Zweinadel-Überwendlich-Nähmaschinen |
| CN114808294A (zh) * | 2021-01-27 | 2022-07-29 | 杰克科技股份有限公司 | 过梗缝纫控制方法、装置和系统 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150141C1 (de) * | 1981-12-18 | 1983-08-25 | Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern | Naehmaschine mit einer Einrichtung zur Herstellung von Eckennaehten |
| DE3342391C1 (de) * | 1983-11-24 | 1985-03-14 | Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern | Naehmaschine mit Nadel und Untertransport und einer Einrichtung zum Ansteuern eines vorbestimmten Endpunktes einer Naht |
| DE3617204C1 (de) * | 1986-05-22 | 1987-10-01 | Duerkoppwerke | Vorrichtung zum Herstellen von an vorbestimmter Stelle endenden Naehten |
-
1991
- 1991-02-14 EP EP91102114A patent/EP0499651A1/fr not_active Withdrawn
-
1992
- 1992-02-14 JP JP2796892A patent/JPH04319387A/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3150141C1 (de) * | 1981-12-18 | 1983-08-25 | Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern | Naehmaschine mit einer Einrichtung zur Herstellung von Eckennaehten |
| DE3342391C1 (de) * | 1983-11-24 | 1985-03-14 | Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern | Naehmaschine mit Nadel und Untertransport und einer Einrichtung zum Ansteuern eines vorbestimmten Endpunktes einer Naht |
| DE3617204C1 (de) * | 1986-05-22 | 1987-10-01 | Duerkoppwerke | Vorrichtung zum Herstellen von an vorbestimmter Stelle endenden Naehten |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19719372C2 (de) * | 1997-05-07 | 2001-12-06 | Altin Naehtechnik Prototyping | Verfahren und Vorrichtung zur Nahtendensicherung durch Einziehen der Fadenkette an Ein- und Zweinadel-Überwendlich-Nähmaschinen |
| DE10001611A1 (de) * | 2000-01-17 | 2001-08-02 | Schmale Holding Gmbh & Co | Verfahren und Vorrichtung zum maschinellen Verriegeln einer Kettenstichnaht |
| DE10001611C2 (de) * | 2000-01-17 | 2001-11-08 | Schmale Holding Gmbh & Co | Verfahren und Vorrichtung zum maschinellen Verriegeln einer Kettenstichnaht |
| CN114808294A (zh) * | 2021-01-27 | 2022-07-29 | 杰克科技股份有限公司 | 过梗缝纫控制方法、装置和系统 |
| CN114808294B (zh) * | 2021-01-27 | 2023-06-20 | 杰克科技股份有限公司 | 过梗缝纫控制方法、装置和系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04319387A (ja) | 1992-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3806298C2 (fr) | ||
| DE2749700B2 (de) | Vorrichtung zum zeitweisen Unterbrechen der Sticknadelbewegung an Stickoder Nähmaschinen | |
| EP0516929A2 (fr) | Dispositif de fixation de boutons rivets ou analogues, en particulier à des vêtements | |
| DE2400722A1 (de) | Verfahren und vorrichtung zur herstellung von plueschtuchen | |
| DE2919066C2 (fr) | ||
| DE963210C (de) | Knopfzufuehrungsvorrichtung fuer Knopfannaehmaschinen | |
| EP0499651A1 (fr) | Machine à coudre | |
| DE102008058197B4 (de) | Oberfadenhaltevorrichtung einer Nähmaschine | |
| DE3812129A1 (de) | Vorrichtung zum positionieren einer fadenkette | |
| DE2442264B2 (de) | Schneideinrichtung für eine Nähmaschine | |
| DE4015465C1 (fr) | ||
| DE69028050T2 (de) | Verfahren und Vorrichtung zum Abschneiden des Deckfadens einer Mehrnadelnähmaschine | |
| DE1114689B (de) | Zickzacknaehmaschine mit Einrichtung zum Naehen von Knopfloechern | |
| DE10102036B4 (de) | Nadelfadenabschneider für Einfassnähmaschine | |
| DE1685062A1 (de) | Vor- und zurueckschiebbare Stichbildezunge fuer Zickzack-Naehmaschinen | |
| DE3639390C2 (fr) | ||
| EP0541923A1 (fr) | Coupe-fil avec pince-fil pour le fil arrière ou le fil du dessous d'une machine à broder | |
| DE2630765A1 (de) | Fadenspannvorrichtung fuer eine naehmaschine | |
| EP0291560B1 (fr) | Machine à coudre avec un dispositif coupe fil dans le pied presseur | |
| DE4118008C2 (fr) | ||
| DE1933780A1 (de) | Fadenabziehvorrichtung an Naehmaschinen | |
| DE3113088C2 (de) | Blindstichnähmaschine | |
| DE10052167A1 (de) | Doppelkettenstich-Nähmaschine | |
| DE4135410C1 (en) | Transfer installation for transport sewing machine - has a feed foot, holding foot, slide and tail which presses against a counterpiece allowing accurate formation of yarn chain | |
| EP3935212B1 (fr) | Procédé et dispositif pour garantir la formation d'une boucle du fil d'aiguille pour une machine à broder à navette |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19911122 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE ES FR GB IT LI |
|
| 17Q | First examination report despatched |
Effective date: 19930615 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19931026 |