EP4077792A1 - Stichbildungswerkzeug-baugruppe für eine nähanlage sowie nähanlage mit einer derartigen baugruppe - Google Patents
Stichbildungswerkzeug-baugruppe für eine nähanlage sowie nähanlage mit einer derartigen baugruppeInfo
- Publication number
- EP4077792A1 EP4077792A1 EP20820873.6A EP20820873A EP4077792A1 EP 4077792 A1 EP4077792 A1 EP 4077792A1 EP 20820873 A EP20820873 A EP 20820873A EP 4077792 A1 EP4077792 A1 EP 4077792A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needle
- sewing
- stitch
- gripper
- forming tool
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/02—Loop takers, e.g. loopers for chain-stitch sewing machines, e.g. oscillating
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/30—Driving-gear for loop takers
- D05B57/32—Driving-gear for loop takers in chain-stitch sewing machines
Definitions
- Stitch-forming tool assembly for a sewing system and sewing system with such an assembly
- the invention relates to a stitch-forming tool assembly for a sewing system for producing a double chainstitch seam.
- the invention also relates to a sewing system with such an assembly.
- a double chain stitch sewing machine is known from DD-PS 1111 02.
- An adjusting device for a sewing machine gripper is known from DE 29 01 582 C2.
- DE-PS 104963 discloses a device for he further of thread loops in double chain stitch machines.
- DE 39 35 779 C1 discloses a gripper disengagement device on a sewing machine.
- US 6,095,069 discloses a double chain stitch sewing machine.
- DE-PS 667052 discloses a sewing needle with a thread cutting edge.
- this object is achieved by a stitch forming tool assembly with the features specified in claim 1.
- DD-PS 1111 02 and DE 29 01 582 C2 show gripper drives from the prior art, which specify such an elliptical evasive movement path and are designed correspondingly complex. A correspondingly complex drive can be dispensed with in the assembly according to the invention.
- the sewing direction is in the assembly according to the invention in the swing plane of motion of the gripper, which is also known as an inline system be.
- the gripper does not perform an evasive movement perpendicular to the oscillating movement plane.
- the stitch-forming tool assembly can be designed so that it does not require a spreader finger to spread open a thread loop and to facilitate threading into the thread loop accordingly.
- a spreader finger which can be omitted here, is known from a chain stitch sewing machine of the Pfaff 5626 type through prior public use.
- a central longitudinal axis of the sewing needle is spaced from a needle tip of the Nähna del. Such a spacing of the sewing needle central longitudinal axis from the needle tip enables an orientation of the sewing needle to the gripper, which simplifies an obstruction-free relative movement of these stitch-forming components during the stitch-forming sequence.
- the needle can also be designed in such a way that it only moves up and down in exactly one direction, that is to say in the needle-pricking direction, so it does not perform any evasive movement relative to the gripper. This applies in particular to the designs according to claims 3 or 4.
- a sewing system has those advantages that have already been explained above with reference to the stitch-forming tool assembly.
- a sewing machine or an automatic sewing machine can listen to the sewing system, for which the stitch-forming tool assembly is a component.
- Part of the sewing system can also be a robot that controls / regulates a sewing head with the stitch-forming tool assembly in several degrees of freedom, so that even more complex material geometries can be provided with defined seams, in particular with three-dimensional seams.
- the sewing system can therefore be a sewing robot whose sewing head can be displaced driven by several degrees of freedom of translation or rotation, or it can be a sewing machine.
- Fig. 1 is a very schematic side view of a sewing system in the form of a sewing robot with indicated stitch formation components for generating a double chain stitch seam;
- FIG. 3 is a schematic plan view of the sewing needle and a section of the gripper, seen from direction III in Fig. 2;
- Fig. 1 shows very schematically main components of a sewing system 1, formed as a sewing robot.
- the sewing system 1 has a C-shaped frame 2 with an arm 3, a base plate 4 and a stand 5 which connects the arm 3 to the base plate 4.
- Part of the sewing system 1 can be a drive, not shown, by means of which the frame 2 can be displaced in several degrees of freedom of translation or rotation, for example in three, four, five or six degrees of freedom.
- a drive is known in connection with industrial robots. Accordingly, the sewing system 1 can be performed as a sewing robot.
- FIG. 1 also shows a Cartesian xyz coordinate system to facilitate the arrangement of positional relationships.
- the x-axis ver runs to the Figure 1 perpendicular to the plane of this out.
- the y-axis runs in Fig. 1 to the right parallel to the extension of the arm 3 and the base plate 4.
- the z-axis runs in Fig. 1 upwards pa rallel to the extension of the stand 5.
- the axial directions x, y, z also apply to the following figures.
- Part of the sewing system 1 is a stitch-forming tool assembly 6 for generating a double chain stitch seam 7, for which a pattern is shown in FIG. 2 and in FIGS. 4 and 5.
- a sewing direction runs along the x-direction, that is, perpendicular to the yz-plane given by the C-shape of the frame 2.
- the assembly 6 has a sewing needle 8 which is held by a needle bar 9 th.
- the needle bar 9 and with it the sewing needle 8 can be driven up and down in a needle stitching direction along the z-axis perpendicular to a sewing material not shown in the drawing.
- the sewing needle 8 is designed to guide a needle thread 10, which is also referred to as an upper thread.
- the sewing needle 8 has an eye 11 for this purpose.
- the stitch formation assembly 6 also includes a gripper 12 which, in the side view according to FIGS. 2, 4 and 5, has a hook-shaped design and is carried by a driven gripper carrier 13.
- the gripper 12 has a cranked design.
- a threading section 14 of the looper 12 has a thread passage opening 16, 17 for a looper thread 18, which is also referred to as a lower thread, in the region of a looper tip 15 and at its opposite end.
- the looper 12 is designed to guide the looper thread 18. Due to a not shown drive of the gripper carrier 13, the gripper is also designed for an oscillating movement in an oscillating movement plane which coincides with the xz plane, i.e. on the one hand from the needle stitch direction z and on the other hand from the sewing direction x along the double chain stitch Seam 7 is stretched.
- a trajectory of the gripper lies during the entire double chain stitch, of which snapshots are shown in Figs. 2, 4 and 5, completely in the oscillating Movement plane xz. The gripper 12 therefore does not perform any evasive movement perpendicular to this oscillating movement plane xz.
- the sewing direction x lies accordingly in the oscillating movement plane xz of the gripper 12.
- the sewing unit 1 thus represents an inline system.
- the stitch formation tool assembly 6 does not include a spreader finger.
- Such a spreader finger which is not available here, is known, for example, from prior public use from a Pfaff 5626 chain stitch sewing machine.
- FIG. 3 shows a schematic plan view of the sewing needle 8 and a broken portion of the threading section 14 of the gripper 12.
- a viewing direction in FIG. 3 is along a central longitudinal axis 19 of the sewing needle 8.
- a piercing point of a needle tip 20 through the plane of the drawing in FIG the central longitudinal axis 19 is spaced apart from the needle tip 20 by a distance 5y.
- the sewing needle 8 is therefore not rotationally symmetrical in the area of the needle tip 20, but the needle tip 20 is displaced by the distance 5y with respect to an axis of symmetry of a needle base body, which coincides with the central longitudinal axis 19.
- the needle tip 20 is spaced perpendicular to the oscillating movement plane xz by the distance 5y from the central longitudinal axis 19. If the threading section 14 of the Grei fers 12 passes the needle tip 20 during the stitch formation, the central longitudinal axis 19, as also shown in FIG. 3, lies between the needle tip 20 and the threading section 14 of the gripper 12, that is, between the needle tip 20 and the gripper 12.
- This decentering of the needle tip 20 makes it easier to guide the sewing needle 8 past the threading section 14, in particular when the needle tip 20 is pierced into a loop of the looper thread 18 as shown in FIG. 2.
- the threading section 14 is guided past a Spit zen section of the sewing needle 8 at a very small distance.
- the components 8, 12 can also touch each other here.
- FIG. 2 a support element 21 for the material to be sewn and a presser or transport foot 22 for the material to be sewn is also shown.
- the sewing material is moved between the support element 21 and the foot 22 in the sewing direction x.
- FIG. 4 shows the moment of the formation sequence of the double chain stitch at which the sewing needle 8 has arrived in the area of a bottom dead center.
- the hook tip 15 is in the area of a dead center on the right in FIG. 4 and deflected to such an extent that in the projection according to FIG. 4 it has reached beyond a section 23 of the needle thread 10 guided out of the eye 11.
- Fig. 5 shows the moment of the stitch formation sequence at which the Einfädelab section 14 is threaded into a needle thread loop formed in the needle thread section 23 due to the reversal of the movement of the sewing needle 8, with the looper thread 18 in the area of the thread passage opening 16 of the Threading section 14 through this loop of the Needle thread section 23 is passed through.
- the next piercing cf. Fig.
- the assembly 6 can also be prepared as a conversion kit for a sewing system.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019219814.7A DE102019219814A1 (de) | 2019-12-17 | 2019-12-17 | Stichbildungswerkzeug-Baugruppe für eine Nähanlage sowie Nähanlage mit einer derartigen Baugruppe |
| PCT/EP2020/084822 WO2021122086A1 (de) | 2019-12-17 | 2020-12-07 | Stichbildungswerkzeug-baugruppe für eine nähanlage sowie nähanlage mit einer derartigen baugruppe |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP4077792A1 true EP4077792A1 (de) | 2022-10-26 |
| EP4077792C0 EP4077792C0 (de) | 2024-10-23 |
| EP4077792B1 EP4077792B1 (de) | 2024-10-23 |
Family
ID=73748100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20820873.6A Active EP4077792B1 (de) | 2019-12-17 | 2020-12-07 | Stichbildungswerkzeug-baugruppe für eine nähanlage sowie nähanlage mit einer derartigen baugruppe |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US11952692B2 (de) |
| EP (1) | EP4077792B1 (de) |
| JP (1) | JP7666843B2 (de) |
| CN (1) | CN115087772B (de) |
| CA (1) | CA3162024A1 (de) |
| DE (1) | DE102019219814A1 (de) |
| MX (1) | MX2022007375A (de) |
| WO (1) | WO2021122086A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019219814A1 (de) * | 2019-12-17 | 2021-06-17 | Pfaff Industriesysteme Und Maschinen Gmbh | Stichbildungswerkzeug-Baugruppe für eine Nähanlage sowie Nähanlage mit einer derartigen Baugruppe |
| CN121593248A (zh) * | 2024-08-21 | 2026-03-03 | 杰克科技股份有限公司 | 一种缝纫机的弯针勾线方法及勾线装置和缝纫机 |
Family Cites Families (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE667052C (de) * | 1938-11-03 | Johann Eisenhofer | Naehnadel mit Fadenschneidkante | |
| US1323340A (en) * | 1919-12-02 | Machine | ||
| DE104963C (de) * | 1897-05-18 | 1899-08-19 | The Singer Manucfacturing Company | Einrichtung zum Erweitern der Fadenschlingen bei Doppelkettenstich-Nähmaschinen |
| US1924378A (en) * | 1932-01-09 | 1933-08-29 | Joseph M Rattie | Sewing machine needle |
| GB703934A (en) * | 1951-05-22 | 1954-02-10 | British United Shoe Machinery | Improvements in or relating to needles for sewing machines |
| US3476065A (en) * | 1966-02-12 | 1969-11-04 | Rimoldi C Spa Virginio | Sewing machine for attaching bindings on the edges of fabrics by means of chainstitch seams blind on one side of the binding |
| IT988980B (it) * | 1973-06-12 | 1975-04-30 | Cerliani Mecc | Capsula portaspola per macchine da cucire |
| IT991303B (it) * | 1973-07-20 | 1975-07-30 | Calze Malerba Spa | Macchina da cucire per la cucitura di tessuti tubolari accoppiati particolarmente per la fabbricazio ne di calze maglie |
| DD111102A1 (de) * | 1974-01-09 | 1975-01-20 | ||
| CH580187A5 (de) * | 1974-12-19 | 1976-09-30 | Mefina Sa | |
| US3954072A (en) | 1975-05-28 | 1976-05-04 | The Singer Company | Needles for tufting or the like |
| US4169422A (en) * | 1976-03-29 | 1979-10-02 | Union Special Corporation | Automatic chain-stitch sewing machine |
| DE2650352C2 (de) * | 1976-11-03 | 1978-12-07 | Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern | Nähmaschine mit einem oberhalb der Stichbildestelle angeordneten Greifer |
| DE2834738C2 (de) * | 1977-08-10 | 1984-07-12 | Wool Research Organisation of New Zealand (Inc.), Lincoln, Canterbury | Nadel für Tuftingmaschinen |
| CA1099993A (en) * | 1978-02-13 | 1981-04-28 | Union Special Corporation | Looper drive mechanism for sewing machines |
| US4385575A (en) * | 1980-07-08 | 1983-05-31 | Weber Richard D | Easy-threading sewing needles and method of making such needles |
| US4458614A (en) * | 1982-01-08 | 1984-07-10 | Organ Needle Co. Ltd. | Sewing machine needle |
| DE8315049U1 (de) * | 1983-05-21 | 1983-09-29 | Fa. Jos. Zimmermann, 5100 Aachen | Tuftingnadel |
| US4539923A (en) * | 1984-04-16 | 1985-09-10 | A. LaSelva | Self-threading needle |
| DE3935779C1 (de) * | 1989-10-27 | 1990-11-29 | Union Special Gmbh, 7000 Stuttgart, De | |
| US5189966A (en) | 1992-04-24 | 1993-03-02 | Spencer Wright Industries, Inc. | Tufting apparatus and method for forming loop pile |
| JP3125504B2 (ja) * | 1993-03-02 | 2001-01-22 | ブラザー工業株式会社 | ミシンの針板 |
| EP0794277A4 (de) * | 1994-11-23 | 1998-06-24 | Zarif Sharifovich Tadzhibaev | Doppelkettenstichnähmaschine |
| JPH08280973A (ja) | 1995-04-12 | 1996-10-29 | Pegasus Sewing Mach Mfg Co Ltd | 二重環縫いミシンのルーパ糸制御方法及び装置 |
| FR2737954B1 (fr) | 1995-08-24 | 1998-01-23 | Michel Bordage | Procede et dispositif pour assembler deux pieces d'etoffe ou analogue, et article, notamment vestimentaire, ainsi obtenu |
| DE19921914C2 (de) * | 1999-05-12 | 2001-10-25 | Groz Beckert Kg | Nähmaschinennadel mit versetzten Öhrstegen |
| DE10126721B4 (de) * | 2001-05-31 | 2004-05-19 | Pfaff Industrie Maschinen Ag | Freiumlaufender Greifer für Doppelsteppstichnähmaschinen |
| JP2005253533A (ja) * | 2004-03-09 | 2005-09-22 | Yuko Hasegawa | ミシン |
| DE102004037716B4 (de) * | 2004-08-04 | 2009-04-02 | Groz-Beckert Kg | Nachbehandlungsnadel für textile Flächengebilde |
| ITTO20040750A1 (it) * | 2004-10-29 | 2005-01-29 | P A M I Di Tomaselli Srl | Dispositivo di manipolazione di pezze di tessuto particolarmente adatto per alimentare e scaricare una stazione di piegatura e stiratura di tasche riportate |
| CA2622004C (en) * | 2005-09-09 | 2012-11-13 | L & P Property Management Company | Horizontal-multi-needle quilting machine and method |
| JP2007117366A (ja) | 2005-10-27 | 2007-05-17 | Juki Corp | 環縫いミシン |
| CN2853853Y (zh) * | 2005-11-18 | 2007-01-03 | 胡永珠 | 缝纫机机针 |
| JP2008253448A (ja) * | 2007-04-03 | 2008-10-23 | Juki Corp | 環縫いミシンの目飛ばし装置 |
| JP2009112501A (ja) * | 2007-11-06 | 2009-05-28 | Juki Corp | ミシン |
| JP2009226143A (ja) * | 2008-03-25 | 2009-10-08 | Juki Corp | ミシン |
| JP2010227219A (ja) * | 2009-03-26 | 2010-10-14 | Pegasus Sewing Mach Mfg Co Ltd | ミシンの下ルーパ調節装置 |
| JP2011147759A (ja) * | 2009-12-21 | 2011-08-04 | Tokai Ind Sewing Mach Co Ltd | ミシンの垂直全回転釜の構造 |
| JP6324780B2 (ja) | 2014-03-18 | 2018-05-16 | 蛇の目ミシン工業株式会社 | ロックミシン |
| JP6761712B2 (ja) | 2016-09-20 | 2020-09-30 | Juki株式会社 | ミシン及び縫製システム |
| CN110396777B (zh) * | 2019-06-25 | 2024-04-09 | 吴江阳光科技缝纫机有限公司 | 一种链式缝纫机的弯针调节装置 |
| DE102019219814A1 (de) * | 2019-12-17 | 2021-06-17 | Pfaff Industriesysteme Und Maschinen Gmbh | Stichbildungswerkzeug-Baugruppe für eine Nähanlage sowie Nähanlage mit einer derartigen Baugruppe |
-
2019
- 2019-12-17 DE DE102019219814.7A patent/DE102019219814A1/de active Pending
-
2020
- 2020-12-07 CA CA3162024A patent/CA3162024A1/en active Pending
- 2020-12-07 US US17/785,442 patent/US11952692B2/en active Active
- 2020-12-07 CN CN202080088393.XA patent/CN115087772B/zh active Active
- 2020-12-07 WO PCT/EP2020/084822 patent/WO2021122086A1/de not_active Ceased
- 2020-12-07 EP EP20820873.6A patent/EP4077792B1/de active Active
- 2020-12-07 MX MX2022007375A patent/MX2022007375A/es unknown
- 2020-12-07 JP JP2022537610A patent/JP7666843B2/ja active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA3162024A1 (en) | 2021-06-24 |
| DE102019219814A1 (de) | 2021-06-17 |
| US20230013197A1 (en) | 2023-01-19 |
| WO2021122086A1 (de) | 2021-06-24 |
| JP7666843B2 (ja) | 2025-04-22 |
| JP2023507439A (ja) | 2023-02-22 |
| EP4077792C0 (de) | 2024-10-23 |
| US11952692B2 (en) | 2024-04-09 |
| EP4077792B1 (de) | 2024-10-23 |
| CN115087772B (zh) | 2024-01-26 |
| MX2022007375A (es) | 2022-07-12 |
| CN115087772A (zh) | 2022-09-20 |
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