JPS5558793A - Electromechanical pattern sewing machine - Google Patents

Electromechanical pattern sewing machine

Info

Publication number
JPS5558793A
JPS5558793A JP13125778A JP13125778A JPS5558793A JP S5558793 A JPS5558793 A JP S5558793A JP 13125778 A JP13125778 A JP 13125778A JP 13125778 A JP13125778 A JP 13125778A JP S5558793 A JPS5558793 A JP S5558793A
Authority
JP
Japan
Prior art keywords
seam
pulse motor
pulse
driving
circuit
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.)
Pending
Application number
JP13125778A
Other languages
Japanese (ja)
Inventor
Yuji Masaki
Tsutomu Sesato
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13125778A priority Critical patent/JPS5558793A/en
Publication of JPS5558793A publication Critical patent/JPS5558793A/en
Pending legal-status Critical Current

Links

Landscapes

  • Sewing Machines And Sewing (AREA)
  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To sufficiently satisfy torque, high-speed following ability, and position accuracy which are required for driving a seam-forming device of a sewing machine by making the excitation-phase switching period of a pulse motor variable. CONSTITUTION:The number of steps of a pulse motor which is required for the movement of the pulse motor driving a seam-forming device system 4 is output from a seam-information memory device 2. A control circuit 7 determines the method of switching the driving cycle so as to drive the pulse motor in an optimal manner depending on the numbe of moving steps and asigns the pulse number to individual circuits 5a-5d. The circuits 5a-5b output the specified pulse number at every oscillating period, which is specified for each circuit, sequentially from the circuit a, and stops the oscillation. A driver 3 that receives the pulse train has a logic constitution which generates an exciting signal for the pulse motor, and shifts the exciting phase one by one. The signal from a needle-position sensor 6 accesses the seam-information memory device 2.
JP13125778A 1978-10-24 1978-10-24 Electromechanical pattern sewing machine Pending JPS5558793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13125778A JPS5558793A (en) 1978-10-24 1978-10-24 Electromechanical pattern sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13125778A JPS5558793A (en) 1978-10-24 1978-10-24 Electromechanical pattern sewing machine

Publications (1)

Publication Number Publication Date
JPS5558793A true JPS5558793A (en) 1980-05-01

Family

ID=15053679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13125778A Pending JPS5558793A (en) 1978-10-24 1978-10-24 Electromechanical pattern sewing machine

Country Status (1)

Country Link
JP (1) JPS5558793A (en)

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