JPS6464959A - Automatic roll diameter preset device - Google Patents

Automatic roll diameter preset device

Info

Publication number
JPS6464959A
JPS6464959A JP22203487A JP22203487A JPS6464959A JP S6464959 A JPS6464959 A JP S6464959A JP 22203487 A JP22203487 A JP 22203487A JP 22203487 A JP22203487 A JP 22203487A JP S6464959 A JPS6464959 A JP S6464959A
Authority
JP
Japan
Prior art keywords
unwinder
roll
motor
rotation
auxiliary roll
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
JP22203487A
Other languages
Japanese (ja)
Inventor
Takashi Tomioka
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.)
Toshiba Corp
Original Assignee
Toshiba 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
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP22203487A priority Critical patent/JPS6464959A/en
Publication of JPS6464959A publication Critical patent/JPS6464959A/en
Pending legal-status Critical Current

Links

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

PURPOSE:To eliminate loosening or cutting of paper when a DC motor for driving an unwinder starts to rotate by carrying out measurement of roll diameter and preset of the unwinder automatically. CONSTITUTION:An auxiliary roll 7 is contacted with an unwinder 1 then a DC motor 2 is rotated for a predetermined time. Rotation at that time is detected through a rotation detector 10 and counted through a counter 11, while at the same time, rotation of the auxiliary roll 7 is detected through a rotation detector 12 and counted through a counter 13. Roll diameter of the unwinder is operated through an operating unit 15 based on rotations of the unwinder roll 1 and the auxiliary roll 7 and the diameter of the auxiliary roll inputted previously from a setter 14, and the operated result is employed as a preset value. Then field current of the DC motor 2 is controlled through a field controller based on the preset value thus completing starting operation.
JP22203487A 1987-09-07 1987-09-07 Automatic roll diameter preset device Pending JPS6464959A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22203487A JPS6464959A (en) 1987-09-07 1987-09-07 Automatic roll diameter preset device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22203487A JPS6464959A (en) 1987-09-07 1987-09-07 Automatic roll diameter preset device

Publications (1)

Publication Number Publication Date
JPS6464959A true JPS6464959A (en) 1989-03-10

Family

ID=16776048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22203487A Pending JPS6464959A (en) 1987-09-07 1987-09-07 Automatic roll diameter preset device

Country Status (1)

Country Link
JP (1) JPS6464959A (en)

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