EP1344858A2 - Nähmaschine - Google Patents
Nähmaschine Download PDFInfo
- Publication number
- EP1344858A2 EP1344858A2 EP03004682A EP03004682A EP1344858A2 EP 1344858 A2 EP1344858 A2 EP 1344858A2 EP 03004682 A EP03004682 A EP 03004682A EP 03004682 A EP03004682 A EP 03004682A EP 1344858 A2 EP1344858 A2 EP 1344858A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sewing machine
- presser foot
- bar
- needle bar
- machine according
- 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
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B73/00—Casings
- D05B73/02—Upper casings
Definitions
- the invention relates to a sewing machine comprising a sewing machine upper part a frame, a needle bar and a presser foot bar that are parallel to each other are guided back and forth in the housing, and a drive device for the needle bar and the presser foot.
- the invention has for its object to eliminate the disadvantages mentioned and to specify a sewing machine of the type mentioned, the higher Flexibility in controlling the movement of the needle bar and presser foot, especially when setting the needle stroke while maintaining a guaranteed the highest possible precision.
- the essence of the solution according to the invention is that the needle bar and the Presser foot rack are each coupled to a rack, each of which engages with a drive gear, which is controlled by its own program Electric motor can be driven.
- Needle bar and presser foot bar can completely in the solution according to the invention can be moved up and down independently of each other with high precision. It can not only set the speed and / or acceleration profile separately and changed if necessary, but it can also be the needle stroke during of the sewing company can be changed as required. This is especially for Tufting machines and sewing material of importance, the material thickness of which changes continuously or by leaps and bounds. Here it is important to adjust the needle stroke accordingly change the material thickness to achieve a clean stitch formation.
- the presser foot can be pressed against the surface of the sewing material be like this for pulling the needle out of the fabric and that Sticking the thread in the material is required because the movement of the Presser foot is controllable regardless of the movement of the needle bar.
- the Sewing speed can be easily adjusted to the material thickness and the needle stroke be adjusted.
- the needle bar and the presser foot bar are preferably integral with the respective rack, i.e. the needle bar and the presser foot bar can identify a corresponding toothing themselves.
- the needle bar and the Presser foot bar together with at least the drive wheels on one slide arranged, which is guided in the housing parallel to the sewing direction and is adjustable by means of a separate program-controlled slide drive.
- This design allows the needle bar and the Presser foot bar in or against the positive sewing direction. This makes it possible the entire sewing machine continuously with a suitable manipulator, e.g. an industrial robot to move along the intended seam line. A usual in industrial sewing machines and because of the constant acceleration and Decelerating intermittent relative movement limiting working speed between the material and the sewing machine is therefore not necessary.
- the motion law for the slide control is generated in such a way that neither the needle nor the presser foot move relative to the sewing direction Execute the sewing material as long as one of these sewing tools is in the sewing material Contact.
- the thread feeder is preferably also through a separate program-controlled servomotor can be driven.
- the thread take-up device has a thread pulling lever arranged on a toothed rack, the rack with a gear driven by the servomotor in Intervention stands. This also allows the thread to be fed to the needle from the Decoupled needle movement itself and optimized for the respective sewing process become.
- the thread tension can also be program-controlled by a thread brake adjustable braking effect can be set.
- the lower part of the sewing machine can have at least one rotating part or oscillating gripper can be assigned that of a separate program-controlled Motor can be driven, so that other stitch types such as a chain stitch can be carried out.
- FIG. 1 shows a sewing machine upper part, generally designated 10 a plate 12 which is part of a frame or housing. On the plate 12 are a flanged first and second servo motors 14 and 16, the shafts 18 and 20 of which protrude through the plate 12.
- a carriage 22 On the frame is a carriage 22 with one to the in a manner not shown Plate 12 parallel bearing plate 24 and one perpendicular to this and only Plate 26 indicated by dashed lines can be moved in the direction of the double arrow B. guided.
- On the bearing plate 24 are guides 28, 30, a needle bar 32 and one Presser foot or presser foot bar 34 in the direction of the double arrow A and movably guided.
- Each of the rods 32 and 34 has a rack 36 which with a gear 38, 40 mounted on the bearing plate 24 is in engagement.
- the Gears 38 and 40 are axially slidably disposed on shafts 18 and 20, respectively and non-rotatably connected to these shafts via a spline. So you can gears 38 and 40 are driven by motors 14 and 16, respectively in turn the needle bar 32 with a needle 42 and the presser foot bar 34 with the Move the presser or presser foot 44 up and down.
- the plate 26 of the carriage 22 is connected via a connecting rod 46 and an eccentric 48 connected to an electric motor 50 so that the carriage 22 in the direction of the Double arrow B back and forth relative to the plate 12 of the frame or housing is movable.
- the motor 50 forms together with the eccentric 48 and the Connecting rod 46 the so-called needle transport, which ensures that the slide 22nd is stationary relative to the material, as long as the needle or presser foot is in contact with the Sewing material is in contact, even if the frame of the sewing machine head is in the sewing direction, i.e. parallel to arrow B continuously relative to the material emotional.
- FIG. 2 further a thread pull lever 52, which is attached to a rack 54, which in Engagement with a gear 58 driven by a motor 56 is and through this can be moved up and down in the direction of arrow C. Furthermore is a gripper 60 is arranged below the needle bar 32 and the presser foot bar 34, which is reciprocated by a motor 62 either as an oscillating gripper or but can be rotated as a rotary gripper, as shown by arrows D and E is indicated.
- a motor 62 either as an oscillating gripper or but can be rotated as a rotary gripper, as shown by arrows D and E is indicated.
- All motors 14, 16, 50, 56 and 62 are connected to a control unit 64 via which the individual motors can be controlled independently of one another. So are the stroke, the acceleration, the deceleration and the Downtimes of the needle bar, the presser foot and the carriage are free programmable, i.e. these movements are not necessarily with each other coupled. All sizes can be program controlled during the sewing process can be changed independently. The same applies to the drive of the The gripper 60 and the thread pull lever 52.
- the upper part of the sewing machine itself can be pivoted on one Robots are held so that the needle is also at an angle relative to the Z axis can pierce the material.
- the holder on the robot can do so be trained that the sewing machine head can be replaced quickly can.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
- Inorganic Insulating Materials (AREA)
- Massaging Devices (AREA)
Abstract
Description
- Figur 1
- eine schematische perspektivische Darstellung der wesentlichen Elemente eines erfindungsgemäßen Nähmaschinenoberteiles und
- Figur 2
- eine schematische Darstellung der bewegten Teile der erfindungsgemäßen Nähmaschine und ihrer Antriebe.
Claims (8)
- Nähmaschine, umfassend einen Nähmaschinenoberteil (10) mit einem Rahmen, einer Nadelstange (32) und einer Nähfußstange (34), die parallel zueinander in dem Rahmen hin- und herbewegbar geführt sind, und mit Antriebsmitteln für die Nadelstange (32) und die Nähfußstange (34), dadurch gekennzeichnet, dass die Nadelstange (32) und die Nähfußstange (34) jeweils mit einer Zahnstange (36) gekoppelt sind, die jeweils im Eingriff mit einem Antriebszahnrad (38, 40) steht, das von einem eigenen programmgesteuerten Elektromotor (14, 16) antreibbar ist.
- Nähmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Nadelstange (32) und die Nähfußstange (34) einstückig mit der jeweiligen Zahnstange (36) ausgebildet sind.
- Nähmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Nadelstange (32) und die Nähfußstange (34) zusammen mit mindestens ihrem jeweiligen Antriebszahnrad (38, 40) an einem Schlitten (22) angeordnet sind, der an dem Rahmen parallel zur Nährichtung (B) verschiebbar geführt und mittels eines separaten programmgesteuerten Schlittenantriebes (50, 48, 46) verstellbar ist.
- Nähmaschine nach einem der Ansprüche 1 bis 3, gekennzeichnet durch einen Fadengeber, der durch einen separaten programmgesteuerten Stellmotor (56) antreibbar ist.
- Nähmaschine nach Anspruch 4, dadurch gekennzeichnet, dass der Fadengeber einen an einer Zahnstange (54) angeordneten Fadenziehhebel (52) hat, wobei die Zahnstange (54) mit einem durch den Stellmotor (56) antreibbaren Zahnrad (58) in Eingriff steht.
- Nähmaschine nach einem der Ansprüche 1 bis 5, gekennzeichnet durch eine Fadenbremse mit programmgesteuert einstellbarer Bremswirkung.
- Nähmaschine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass dem Nähmaschinenoberteil (10) ein Unterteil mit mindestens einem rotierenden oder oszillierenden Greifer (60) zugeordnet ist, der von einem separaten programmgesteuerten Motor (62) antreibbar ist.
- Nähmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Motoren (14, 16, 50, 56, 62) Servomotoren sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10211528 | 2002-03-15 | ||
| DE10211528A DE10211528A1 (de) | 2002-03-15 | 2002-03-15 | Nähmaschine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1344858A2 true EP1344858A2 (de) | 2003-09-17 |
| EP1344858A3 EP1344858A3 (de) | 2004-07-28 |
| EP1344858B1 EP1344858B1 (de) | 2006-06-28 |
Family
ID=27762936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03004682A Expired - Lifetime EP1344858B1 (de) | 2002-03-15 | 2003-03-03 | Nähmaschine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6920837B2 (de) |
| EP (1) | EP1344858B1 (de) |
| AT (1) | ATE331830T1 (de) |
| DE (2) | DE10211528A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8671858B2 (en) * | 2009-03-02 | 2014-03-18 | Tuftco Corporation | Servo driven crank adjusted shifting mechanism |
| WO2015131069A1 (en) * | 2014-02-28 | 2015-09-03 | Card-Monroe Corp. | Variable stroke drive system for tufting machine |
| CN103952869B (zh) * | 2014-05-21 | 2016-04-20 | 杰克缝纫机股份有限公司 | 油缓冲倒缝电磁铁机构 |
| TWI596252B (zh) * | 2015-08-10 | 2017-08-21 | Ming Jang Sewing Machine Co Ltd | Three of the motor sewing machine |
| US10240271B2 (en) | 2016-03-08 | 2019-03-26 | Toyota Motor Engineering & Manufacturing North America, Inc. | Sewing apparatus |
| JP7224112B2 (ja) * | 2018-05-21 | 2023-02-17 | Juki株式会社 | 縫製システム |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4690081A (en) * | 1983-08-12 | 1987-09-01 | Awfi Arbeitswissenschaffliches Forschungsinstitut Gmbh | Sewing machine |
| US5090341A (en) * | 1990-09-18 | 1992-02-25 | Spencer Wright Industries, Inc. | Hand-held tufting mending gun |
| JP2871200B2 (ja) * | 1991-07-17 | 1999-03-17 | ブラザー工業株式会社 | 針棒・釜別駆動ミシンの制御装置 |
| SE509654C2 (sv) * | 1995-03-17 | 1999-02-22 | Viking Sewing Machines Ab | Anordning i en symaskin |
| CN1107757C (zh) * | 1998-04-15 | 2003-05-07 | G.M.普法夫有限公司 | 用于形成连续不断的线迹的机器 |
| DE19827846C2 (de) | 1998-06-23 | 2001-05-31 | Frankl & Kirchner | Antrieb für eine Nähmaschine, insbesondere eine Industrienähmaschine |
-
2002
- 2002-03-15 DE DE10211528A patent/DE10211528A1/de not_active Withdrawn
-
2003
- 2003-03-03 EP EP03004682A patent/EP1344858B1/de not_active Expired - Lifetime
- 2003-03-03 AT AT03004682T patent/ATE331830T1/de not_active IP Right Cessation
- 2003-03-03 DE DE50304012T patent/DE50304012D1/de not_active Expired - Lifetime
- 2003-03-14 US US10/389,367 patent/US6920837B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1344858A3 (de) | 2004-07-28 |
| DE10211528A1 (de) | 2003-09-25 |
| US20030209176A1 (en) | 2003-11-13 |
| EP1344858B1 (de) | 2006-06-28 |
| DE50304012D1 (de) | 2006-08-10 |
| ATE331830T1 (de) | 2006-07-15 |
| US6920837B2 (en) | 2005-07-26 |
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