EP0417120A1 - Nähmaschine mit einem unteren stoffschieber - Google Patents

Nähmaschine mit einem unteren stoffschieber

Info

Publication number
EP0417120A1
EP0417120A1 EP89905111A EP89905111A EP0417120A1 EP 0417120 A1 EP0417120 A1 EP 0417120A1 EP 89905111 A EP89905111 A EP 89905111A EP 89905111 A EP89905111 A EP 89905111A EP 0417120 A1 EP0417120 A1 EP 0417120A1
Authority
EP
European Patent Office
Prior art keywords
lifting
sewing machine
movements
crank
shaft
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Withdrawn
Application number
EP89905111A
Other languages
German (de)
English (en)
French (fr)
Inventor
Albert Dusch
Karl-Heinz Walther
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.)
GM Pfaff AG
Original Assignee
GM Pfaff 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 GM Pfaff AG filed Critical GM Pfaff AG
Publication of EP0417120A1 publication Critical patent/EP0417120A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B27/00—Work-feeding means
    • D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements

Definitions

  • the invention relates to a sewing machine with a lower fabric slide according to the preamble of claim 1.
  • a sewing machine of this type is known from DE-PS 21 08 309. It has a combined feed device which consists of a lower fabric pusher and a needle feed device in which the oscillating shaft controlling the needle bar oscillating frame and reciprocating in a horizontal plane with the fabric pusher carrier
  • Vibrating shaft is connected, the oscillating movements of which are derived from a feed eccentric and whose size can be adjusted by means of a stitch length adjusting device.
  • the lower fabric pusher is given vertical lifting movements from a drive eccentric via an eccentric rod and a crank mechanism, so that the lower fabric pusher performs a square motion.
  • This combined feed device ensures that several layers of fabric are sewn together without displacement.
  • the lower fabric slide must not make any vertical movements.
  • the lifting drive device, the drive eccentric and the Eccentric rod must be removed with this machine with considerable expenditure of time if the sewing machine with bordering work with a moving
  • Ribbon strip edger to be used.
  • the reinstallation of the lifting drive device is necessary for use for normal sewing work.
  • the invention has for its object to design a sewing machine according to the preamble of patent claim 1 so that the fabric pusher can either carry out either square movements or only horizontal sliding movements.
  • the material slide lifting shaft is guaranteed and, on the other hand, this is securely fixed in its switch-off position if the lower material slide is not to be given any lifting movements, is stated in claim 3.
  • the measure specified in claim 4 on the one hand allows the height of the fabric slide to be adjusted when the lifting movement is switched off, and on the other hand offers the possibility of aligning the slots of the holder and the crank on the lifting shaft in order to insert the driver.
  • a feed eccentric (2) is attached to the drive shaft (1) of the sewing machine and is enclosed by an eccentric rod (3), the free end of which is articulated to an oscillating lever (5) which has an arc slot (4) and which is fixed around a housing
  • Bearing pin (6) can be swung out.
  • a sliding block (7) is guided in the arch slot (4) so as to be adjustable relative to the bearing pin (6) and is mounted on one end of a connecting rod (8).
  • the other end of the connecting rod (8) is pivotally connected to a crank (9) on the sliding shaft (10) for the lower fabric slide (11) is attached.
  • a crank (12) is attached to the sliding shaft (10) and is articulated to one end of the fabric slide carrier (13).
  • the lower fabric slide (11) is screwed onto the fabric slide support (13).
  • the sliding shaft (10) is articulated via a crank (14) to one end of a push rod (15), the other end of which is articulated to a crank (16), and is thus connected to a needle feed oscillating shaft (17) on which the crank (16) is attached.
  • the needle bar oscillating frame (18) is fastened, in which the needle bar (19), which can be moved back and forth in a known manner, is supported and carries the needle (20) at the lower end.
  • a gripper (21) works together with the needle (20) to form the seam.
  • a stitch length adjustment lever (22) is used for swinging movements, which is pivotable about a bearing pin (23) fixed to the housing and is connected to the connecting rod (8) by a connecting rod (24).
  • the vertical lifting movements of the lower fabric slide (11) are derived from a lifting eccentric (25) which is attached to a drive shaft (26).
  • the lifting eccentric (25) could also be arranged on the drive shaft (1).
  • the lifting eccentric (25) is encompassed by an eccentric rod (27), the free end of which is secured by means of a locking screw (31), which is guided through an arch slot (28) in a rocking lever (30) freely pivoted on the lifting shaft (29), and a nut ( 32) is adjustably connected to the rocker arm (30) relative to the lifting shaft (29).
  • a lifting crank (33) is attached to the lifting shaft (29), which has a slot (34).
  • a driver (37) is pivotally mounted on the lifting crank (33) by means of a stud screw (38), the free end of which is inserted into a slot (35)
  • crank arm (36) of the rocker arm (30) protrudes and is detachably fastened there by means of a screw (39).
  • a screw (39) Through this coupling connection, the oscillating movements imparted to the oscillating lever (30) by the lifting eccentric (25) via the eccentric rod (27) are transmitted to the lifting shaft (29) and from there via a crank (40) attached to the lifting shaft (29) and a link ( 41) transferred to the slider support (13).
  • the screw (39) is unscrewed from the crank arm (36) and the driver (37) is rotated around the pivot screw (38) by 180, so that it fits into a slot (42) in one lateral distance from the lifting crank (33) engages on the machine housing with the aid of the height-adjustable holder (46) which is passed through a longitudinal slot (43) through screws (44, 45) and is detachably fastened there by a screw (47).
  • the driver (37) holds the lifting shaft (29) securely in its off position via the lifting crank (3). An unintentional adjustment while the sewing machine is running is therefore excluded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Transmission Devices (AREA)
EP89905111A 1988-06-04 1989-04-26 Nähmaschine mit einem unteren stoffschieber Withdrawn EP0417120A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3819061A DE3819061C1 (enExample) 1988-06-04 1988-06-04
DE3819061 1988-06-04

Publications (1)

Publication Number Publication Date
EP0417120A1 true EP0417120A1 (de) 1991-03-20

Family

ID=6355867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89905111A Withdrawn EP0417120A1 (de) 1988-06-04 1989-04-26 Nähmaschine mit einem unteren stoffschieber

Country Status (7)

Country Link
US (1) US5299518A (enExample)
EP (1) EP0417120A1 (enExample)
JP (1) JP2730784B2 (enExample)
KR (1) KR900702112A (enExample)
DE (1) DE3819061C1 (enExample)
ES (1) ES2014143A6 (enExample)
WO (1) WO1989012127A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111501222A (zh) * 2019-01-31 2020-08-07 杰克缝纫机股份有限公司 缝纫机剪线调针距装置及缝纫机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1107136C (zh) * 1997-06-16 2003-04-30 重机公司 缝纫机的送布方法及送布装置
JP4177162B2 (ja) * 2003-05-02 2008-11-05 Ｊｕｋｉ株式会社 ミシンの送り装置
JP5940307B2 (ja) * 2012-01-18 2016-06-29 Juki株式会社 ミシンの送り調節機構
US11434592B2 (en) * 2017-10-06 2022-09-06 Hamer-Fischbein Llc Sewing stitch length adjustment mechanisms
CN111074433B (zh) * 2019-12-30 2021-11-02 杰克缝纫机股份有限公司 缝纫机送料机构及具有该机构的缝纫机
CN114919802B (zh) * 2022-06-16 2024-03-19 佛山市浩普机械设备有限公司 一种机械式食品连续包裹机

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE225185C (enExample) *
BE464943A (enExample) * 1945-05-02
US2496817A (en) * 1947-06-19 1950-02-07 Singer Mfg Co Feeding mechanism for sewing machines
US2526480A (en) * 1948-04-06 1950-10-17 Richard K Hohmann Sewing-machine feed mechanism
NL85045C (enExample) * 1951-04-27
US3467039A (en) * 1967-11-20 1969-09-16 Singer Co Work feeding mechanisms for sewing machines
DE2108309B1 (de) * 1971-02-22 1972-05-25 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern Doppelkettenstichnähmaschine mit einer kombinierten Vorschubeinrichtung
US4391216A (en) * 1980-11-06 1983-07-05 Union Special Corporation Feed mechanism for sewing machines
DE3150141C1 (de) * 1981-12-18 1983-08-25 Pfaff Industriemaschinen Gmbh, 6750 Kaiserslautern Naehmaschine mit einer Einrichtung zur Herstellung von Eckennaehten
JPS59114882U (ja) * 1983-01-20 1984-08-03 蛇の目ミシン工業株式会社 電子ミシンにおける制御量の切換機構
JPH0427516Y2 (enExample) * 1986-05-16 1992-07-01

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8912127A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111501222A (zh) * 2019-01-31 2020-08-07 杰克缝纫机股份有限公司 缝纫机剪线调针距装置及缝纫机
CN111501222B (zh) * 2019-01-31 2021-12-21 浙江杰克智能缝制科技有限公司 缝纫机剪线调针距装置及缝纫机

Also Published As

Publication number Publication date
DE3819061C1 (enExample) 1989-11-23
WO1989012127A1 (en) 1989-12-14
US5299518A (en) 1994-04-05
JPH04504959A (ja) 1992-09-03
KR900702112A (ko) 1990-12-05
JP2730784B2 (ja) 1998-03-25
ES2014143A6 (es) 1990-06-16

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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

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17P Request for examination filed

Effective date: 19901122

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): IT

17Q First examination report despatched

Effective date: 19920507

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19921103