ES425624A1 - IMPROVEMENTS INTRODUCED IN A DRIVING INSTALLATION FOR SEWING MACHINES. - Google Patents

IMPROVEMENTS INTRODUCED IN A DRIVING INSTALLATION FOR SEWING MACHINES.

Info

Publication number
ES425624A1
ES425624A1 ES425624A ES425624A ES425624A1 ES 425624 A1 ES425624 A1 ES 425624A1 ES 425624 A ES425624 A ES 425624A ES 425624 A ES425624 A ES 425624A ES 425624 A1 ES425624 A1 ES 425624A1
Authority
ES
Spain
Prior art keywords
motor
speed
rotor
circuit
sewing machine
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.)
Expired
Application number
ES425624A
Other languages
Spanish (es)
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.)
Union Special Corp
Original Assignee
Union Special Corp
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
Priority claimed from US00359870A external-priority patent/US3832613A/en
Application filed by Union Special Corp filed Critical Union Special Corp
Publication of ES425624A1 publication Critical patent/ES425624A1/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/22—Devices for stopping drive when sewing tools have reached a predetermined position
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/12—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using detecting coils using the machine windings as detecting coil

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Power Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Brushless Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Improvements introduced in a sewing machine drive installation, to control the sewing machine needle acceleration, drive, deceleration and stop positions in response to input signals from a switch operated by the operator, whose improvements include : a brushless direct current motor having a plurality of field windings and a permanent magnet rotor, said motor driving said sewing machine needle, means for sensing the angular position of said motor, control means for regulating the excitation of said motor field windings in order to generate, therefore, a rotating magnetic field; means for perceiving the speed of said rotor; means for providing a reference signal representing the desired speed of said rotor, first circuit means responsive to said speed sensing means and said reference signal for supplying signals to said control means in order to maintain the desired speed of said motor; second circuit means for dynamically braking said motor; third circuit means for supplying signals to said control means at a fixed speed, and means responsive to said switch operated by the operator to select among the first, second and third means to operate said motor at a speed controlled by said first means circuit, for thereafter braking said motor, and then stepping moving said motor to a predetermined rotor position. (Machine-translation by Google Translate, not legally binding)
ES425624A 1973-05-14 1974-04-24 IMPROVEMENTS INTRODUCED IN A DRIVING INSTALLATION FOR SEWING MACHINES. Expired ES425624A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00359870A US3832613A (en) 1973-05-14 1973-05-14 Sewing machine motor and control circuit

Publications (1)

Publication Number Publication Date
ES425624A1 true ES425624A1 (en) 1976-06-16

Family

ID=23415631

Family Applications (1)

Application Number Title Priority Date Filing Date
ES425624A Expired ES425624A1 (en) 1973-05-14 1974-04-24 IMPROVEMENTS INTRODUCED IN A DRIVING INSTALLATION FOR SEWING MACHINES.

Country Status (8)

Country Link
JP (1) JPS5523637B2 (en)
CA (1) CA1019423A (en)
CH (1) CH586306A5 (en)
DE (1) DE2421589B2 (en)
ES (1) ES425624A1 (en)
FR (1) FR2229796B1 (en)
GB (2) GB1475791A (en)
IT (1) IT1013132B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS512019A (en) * 1974-06-22 1976-01-09 Iwatani & Co Ekikagasuyokikarano kitaigasutoridashisochi
JPS54102611A (en) * 1978-01-31 1979-08-13 Iwatani & Co Vaporizing method and apparatus for liquified gas with atmospheric heat as source
JPS596498A (en) * 1982-06-30 1984-01-13 Kagura Seisakusho:Kk Liquefied gas evaporation device utilizing atmospheric heat
JPS62266098A (en) * 1986-11-18 1987-11-18 ブラザー工業株式会社 Sewing machine drive control device
JPS6365893A (en) * 1987-04-17 1988-03-24 株式会社日立製作所 How to control an electric sewing machine
JPH0685606U (en) * 1993-05-24 1994-12-13 恒 福村 Hair dryer
WO2009029019A1 (en) 2007-08-30 2009-03-05 Vsm Group Ab Positioning of stitch data objects
WO2009061258A1 (en) 2007-11-09 2009-05-14 Vsm Group Ab Thread cut with variable thread consumption in a sewing machine
WO2009085005A1 (en) 2007-12-27 2009-07-09 Vsm Group Ab Sewing machine having a camera for forming images of a sewing area
CN102277696B (en) 2010-06-09 2015-03-11 Vsm集团股份公司 Feeder movement compensation
US8960112B2 (en) 2013-02-01 2015-02-24 Vsm Group Ab Stitching system and method for stitch stop embellishments

Also Published As

Publication number Publication date
CA1019423A (en) 1977-10-18
IT1013132B (en) 1977-03-30
DE2421589B2 (en) 1977-12-29
GB1475792A (en) 1977-06-10
GB1475791A (en) 1977-06-10
DE2421589A1 (en) 1974-12-05
AU6647874A (en) 1975-09-11
JPS5523637B2 (en) 1980-06-24
FR2229796A1 (en) 1974-12-13
JPS5016009A (en) 1975-02-20
FR2229796B1 (en) 1977-10-14
CH586306A5 (en) 1977-03-31

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