EP3088590B1 - Nähmaschine - Google Patents

Nähmaschine Download PDF

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Publication number
EP3088590B1
EP3088590B1 EP16163866.3A EP16163866A EP3088590B1 EP 3088590 B1 EP3088590 B1 EP 3088590B1 EP 16163866 A EP16163866 A EP 16163866A EP 3088590 B1 EP3088590 B1 EP 3088590B1
Authority
EP
European Patent Office
Prior art keywords
stitch
drive
sewing machine
machine according
loosening
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.)
Active
Application number
EP16163866.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3088590A1 (de
Inventor
Borivoj Huvar
Patrik Bulír
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.)
Duerkopp Adler AG
Original Assignee
Duerkopp Adler AG
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 Duerkopp Adler AG filed Critical Duerkopp Adler AG
Publication of EP3088590A1 publication Critical patent/EP3088590A1/de
Application granted granted Critical
Publication of EP3088590B1 publication Critical patent/EP3088590B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B23/00—Sewing apparatus or machines not otherwise provided for
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers
    • D05B47/04—Automatically-controlled tensioning devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/30—Details

Definitions

  • the invention relates to a sewing machine with a stitch loosening finger according to the preamble of claim 1.
  • the DE 29 42 166 A1 discloses a device for determining the thickness of elastic sewing material.
  • the DE 1 241 688 A describes a sewing machine for sewing elastic workpieces, comprising a sensor scanning a workpiece surface in the region of a stitch pattern point, which is connected to a sewing mandrel via a lever connection.
  • the driven stitch loosening finger is used to loosen a seam during sewing. This can be used, for example, when sewing shoulder pads.
  • the position sensor allows a conclusion on the instantaneous position of moving components of the stitch blocker drive.
  • This can for example Be useful for documentation purposes.
  • the sewing machine may have a documentation device, which is in signal communication with the position sensor.
  • the documentation facility can be executed in this way be that it provides documentation data, which may include the current position of the stitchlocker drive, the instantaneous position of the stitching tools during a seaming process.
  • a cam according to claim 2 has proven itself as a drive component.
  • a mounting according to claim 4 in the region of a presser foot rod results in a pivot point of the stitch loosening finger about a presser foot rod axis. This has proven to be particularly suitable for the Stichlocker drive.
  • a position sensor according to claim 5 allows a conclusion on the instantaneous position of the stitch loosening finger.
  • a shutdown device ensures that the Stichlocker drive takes place in a defined position of the components of the Stichlock ceremoniessantriebs. This is reliable.
  • Such a shutdown device can also be used in designs of a stitch lock drive in which the arm shaft is not part of the stitch lock drive.
  • a current position detection according to claim 7 can be realized more cheaply.
  • a Hall sensor according to claim 8 leads to a precise position measurement.
  • a cooperating with the Hall sensor magnet can for Example integrated in the cam.
  • the Hall sensor may be disposed fixed to the housing adjacent to the moving stitch blocker drive component having the magnet.
  • a shutdown device enables automated shutdown of the Stichlock ceremoniessantriebs. This automated shutdown and, if necessary, activation of the stitch blocker drive can be integrated into a sewing program.
  • a sewing machine 1 is used in particular for sewing shoulder pads, which consist of two thin cover fabrics and a middle layer in the form of a padded insert.
  • the sewing machine 1 has a base plate 2, a stand 3, and an arm 4 having a head 5.
  • a stitch forming portion is formed on the top of a column 6 extending from the base plate 2 toward the head 5.
  • the sewing machine 1 has in a conventional manner stitch forming tools for producing a seam in the fabric part.
  • stitching tools include one in the FIG. 1 schematically indicated needle bar 7, at the End is attached to a sewing needle, not shown, and also schematically indicated gripper 8 in the upper end of the column. 6
  • the needle bar 7 is driven by a coupling mechanism no longer shown by an arm shaft 9, which in the Fig. 2 is shown schematically in sections.
  • Stichlock ceremoniessfinger 10 To loosen the seam during sewing is a Stichlock ceremoniessfinger 10, which is sewn during seaming. As long as, for example, the shoulder machine sewing the sewing machine 1 only the two cover fabric layers at the beginning and end sides sew together, the Stichlock ceremoniessfinger 10 remains inactive. In the inactive position, the stitch loosening finger 10 extends approximately parallel to the sewing direction x.
  • the stitch loosening finger 10 is activated and loosens a needle thread during the stitch formation, so that the padded insert is not undesirably compressed during sewing.
  • the activated stitch loosening finger 10 is moved by one to the z-axis (see. Fig. 1 ) parallel axis pivots, moving in the xy plane.
  • the x-direction is the sewing direction.
  • the Fig. 1 shows the sewing machine 1 so from a side perspective view towards the back of the machine.
  • Stichlocker drive 11 To activate the Stichlockanssfingers 10 this is driven by a Stichlocker drive 11, the drive components, for example, in the Fig. 2 are shown.
  • the Stichlocker drive 11 is housed in total in the arm 4 and in or on the head 5 of the sewing machine.
  • the arm shaft 9 is part of the Stichlock ceremoniessantriebs 11. About the arm shaft 9 and a herewith rotatably connected Armwellenzahnrad 12, a first toothed belt 13 is driven, which meshes with another gear 14 which is rotatably connected to a housed in the arm 4 intermediate shaft 15. Another intermediate shaft gear 16 drives a further toothed belt 17, which meshes with a further gear 18 which is rotatably connected to a likewise housed in the arm 4 camshaft 19.
  • the arm shaft 9, the intermediate shaft 15 and the cam shaft 19 extend parallel to each other along the y-direction.
  • a cam 20 Rotatably connected to the cam shaft 19 is a cam 20 which is scanned by a scanning body 21. A circumferential or radius modulation of the cam is transmitted via this scanning in a vibration (see double arrow 22a) extending parallel to the z-direction transmission shaft 22 via a lever joint connection with transmission levers 23, 24, 25 and 26 derived from the oscillatory motion of Transmission shaft 22, the reciprocating motion of the Stichlock ceremoniessfingers 10th
  • the transmission lever 23 oscillates about a predetermined by a longitudinal axis of the transmission shaft 22 swing axis.
  • the transmission lever 25 oscillates about a parallel to the z-axis extending bearing axis 27, which is predetermined by a housing-fixed bearing 28.
  • the transmission lever 26 is in two parts and consists of a bearing component 26a and an integrally connected to the stitch loosening finger 10 lever component 26b.
  • the transmission lever 26 oscillates about a further, parallel to the z-direction bearing axis 29, which is determined by a housing-fixed support to a presser foot 30, which in the Fig. 2 is shown in sections.
  • a bearing of a joint The sample body 21 with the stitch loosening finger 10 thus takes place in the region of the presser foot rod 30.
  • Fig. 4 shows an instantaneous position of the cam 20 and the Abtast stresses 21. This instantaneous position corresponds to an extreme position of the Stichlock mecanicsfingers 10, which in the Fig. 5 is shown.
  • the stitch loosening finger 10 is located between the transport jaws of a transport foot (without reference numeral), which ensures an upper transport of the material.
  • This extreme position is a reversal point of the movement of the stitch loosening finger 10.
  • the scanning body 21 scans a peripheral region of the cam 20 with the largest radius, that is to say a maximum circumferential region 31.
  • a housing side fixed leg spring 32 of the scan body 21 is biased against the outer circumference of the cam 20.
  • the leg spring 32 is supported on a scanning transmission lever 33.
  • the other, housing-fixed end of the leg spring 32 is supported on an adjusting body 34.
  • the adjusting body 34 is designed as sitting on a housing-fixed threaded spindle 35 screw.
  • the 6 and 7 show according to the 4 and 5 an instantaneous position of the scanning components, in which the Stichlockanssfinger 10 is in the other extreme position of its swinging motion.
  • the scanning body 21 scans a peripheral region of the cam disk 20 with a minimum radius, that is to say a minimal peripheral region 36.
  • the cut-off device 37 switches off the stitchlocking drive 11 as a function of a position signal of a position sensor 38.
  • the position sensor 38 is designed as a Hall sensor and cooperates with a magnet 39, which is embedded in the cam 20.
  • the position sensor 38 is mounted fixed to the housing.
  • the position sensor 38 is used to detect a current position of a moving component of the Stichlock ceremoniessantriebs 11, namely an instantaneous position of the cam 20.
  • the position sensor 38 is disposed adjacent to the cam 20.
  • the shutdown device 37 further has a displacement drive 40 for displacing the Abtast stressess 21 between a example in the Fig. 4 and 6 shown scanning position, in the scanning body 21, the cam 20 scans, and one in the Fig. 9 illustrated neutral position in which the scanning body 21 is lifted from the cam 20 so that the Stichlock ceremoniessantrieb 11 is ineffective.
  • a distance between the scanning body 21 and the camshaft 19 is only slightly greater than the radius of the maximum circumferential area 31 of the cam 20, so that the stitch loosening finger 10 is in the extreme position in the deactivated state Fig. 5 remains.
  • the displacement drive 40 is designed as a pneumatic cylinder with a piston 41, which in the neutral position to Fig. 9 is extended to the maximum and while the scan transmission lever 33 is pivoted about a lever joint whose hinge axis coincides with the longitudinal axis of the transmission shaft 22.
  • the displacement drive 40 is in signal communication with the position sensor 38.
  • the displacement drive 40 as well as the other drive components of the sewing machine 1, of a in the Fig. 1 controlled central control device 42 shown.
  • the control device 42 waits for a position signal of the position sensor 38. Depending on the position signal, the control device 42 switches off the stitch lock drive 11 by activating the displacement drive 40 as soon as the stitch loosening finger 10 retards the instantaneous position Fig. 5 has reached.
  • the control device 42 switches off the stitch lock drive 11 by activating the displacement drive 40 as soon as the stitch loosening finger 10 retards the instantaneous position Fig. 5 has reached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP16163866.3A 2015-04-30 2016-04-05 Nähmaschine Active EP3088590B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015207993.7A DE102015207993A1 (de) 2015-04-30 2015-04-30 Nähmaschine

Publications (2)

Publication Number Publication Date
EP3088590A1 EP3088590A1 (de) 2016-11-02
EP3088590B1 true EP3088590B1 (de) 2018-11-14

Family

ID=55701763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16163866.3A Active EP3088590B1 (de) 2015-04-30 2016-04-05 Nähmaschine

Country Status (6)

Country Link
EP (1) EP3088590B1 (ja)
JP (1) JP6821323B2 (ja)
KR (1) KR102503364B1 (ja)
CN (1) CN106087290B (ja)
DE (1) DE102015207993A1 (ja)
TW (1) TWI683935B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110079941B (zh) * 2018-01-26 2021-06-25 拓卡奔马机电科技有限公司 一种电子花样机的扫线装置
JP7262311B2 (ja) * 2019-06-04 2023-04-21 Juki株式会社 縫製システム

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942166A1 (de) * 1979-10-18 1981-04-30 Dürkoppwerke GmbH, 4800 Bielefeld Vorrichtung zur dickenbestimmung elastischen naehgutes

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB232479A (en) * 1924-08-18 1925-04-23 Charles Hiram Greenwood Improvements in sewing machines
DE1241688B (de) * 1959-11-14 1967-06-01 Duerkoppwerke Ag Naehmaschine zum Vernaehen elastischer Werkstuecke
JP2001224875A (ja) * 2000-02-16 2001-08-21 Brother Ind Ltd ボタン付けミシンのボタン浮かし装置
JP2005334234A (ja) * 2004-05-26 2005-12-08 Pegasus Sewing Mach Mfg Co Ltd 筒型上飾り縫いミシン
JP2008036341A (ja) * 2006-08-10 2008-02-21 Juki Corp ミシン
CN200967879Y (zh) * 2006-11-13 2007-10-31 苏尚杰 珠边机气动松线机构
CN201144333Y (zh) * 2007-12-29 2008-11-05 温州市亨泰缝制设备有限公司 用于珠边机的下松线机构
TWI484081B (zh) * 2010-11-30 2015-05-11 Hsien Chang Tseng 縫紉機控制行程的擺臂與擺動中心之調節結構
CN202047244U (zh) * 2011-04-28 2011-11-23 浙江鸿立缝制设备有限公司 绷缝机的凸轮打线机构
DE102011116910A1 (de) * 2011-10-25 2013-04-25 BO-INNO GmbH Vorrichtung zur Erfassung von Drehwinkeln einer Welle größer als 360°
CN104372537B (zh) * 2014-11-14 2016-08-24 上海鲍麦克斯电子科技有限公司 一种工业缝纫机松线控制系统

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942166A1 (de) * 1979-10-18 1981-04-30 Dürkoppwerke GmbH, 4800 Bielefeld Vorrichtung zur dickenbestimmung elastischen naehgutes

Also Published As

Publication number Publication date
EP3088590A1 (de) 2016-11-02
CN106087290A (zh) 2016-11-09
JP6821323B2 (ja) 2021-01-27
DE102015207993A1 (de) 2016-11-03
KR102503364B1 (ko) 2023-02-23
JP2016209567A (ja) 2016-12-15
TWI683935B (zh) 2020-02-01
TW201704581A (zh) 2017-02-01
CN106087290B (zh) 2020-10-23
KR20160129732A (ko) 2016-11-09

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