EP0077570B1 - Apparatus for feeding a tape - Google Patents

Apparatus for feeding a tape Download PDF

Info

Publication number
EP0077570B1
EP0077570B1 EP82109656A EP82109656A EP0077570B1 EP 0077570 B1 EP0077570 B1 EP 0077570B1 EP 82109656 A EP82109656 A EP 82109656A EP 82109656 A EP82109656 A EP 82109656A EP 0077570 B1 EP0077570 B1 EP 0077570B1
Authority
EP
European Patent Office
Prior art keywords
tape
shaft
drum
feeding
drive gear
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
EP82109656A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0077570A1 (en
Inventor
Kyoichi Yamashita
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.)
Koyo Jidoki Co Ltd
Original Assignee
Koyo Jidoki 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 Koyo Jidoki Co Ltd filed Critical Koyo Jidoki Co Ltd
Publication of EP0077570A1 publication Critical patent/EP0077570A1/en
Application granted granted Critical
Publication of EP0077570B1 publication Critical patent/EP0077570B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller

Definitions

  • This invention relates to an apparatus for feeding a tape bearing a plurality of patterns and corresponding check marks printed thereon according to the preamble of claim 1.
  • Such an apparatus is provided for feeding a tape to a secondary processing machine operating at a constant speed, for example, a cutter.
  • a piece of tape having one pattern is used as a label.
  • Apparatus for taking up a tape from its roll at a constant speed or by a constant length per unit time for the purpose of printing or cutting are well known and relatively easy to fabricate.
  • the most simple example is a constantly rotating drum.
  • a tape bearing a plurality of repetitive patterns printed thereon is fed to a constantly operating secondary machine, for example, a cutter or secondary printing machine, constant speed take-up is unacceptable. If a tape . is fed at a constant speed to a constantly operating cutter, the tape will be cut into pieces of an equal length. However, in the case of a tape bearing repetitive patterns printed thereon, all the patterns are not precisely equal in length.
  • a series of patterns L (to be used as labels, for example) are printed on a tape.
  • One pattern or label has a length 1 1 and another pattern has a length 1 2 .
  • the lengths 1 1 and 1 2 are often slightly different as long as the patterns are remote from each other.
  • Such a difference in length among printed patterns results from a number of factors including accumulation of errors in the position of patterns printed on the tape, accumulation of expansion and/or shrinkage of the tape due to high tension at a high speed feeding, influence of humidity during feeding, influence of humidity and aging during storage of tape rolls, taking-up slippage, resistance by the unwinding roll and the like. If the tape is constantly cut by feeding it at a constant speed or by an equal length per unit time, then the cutting position will gradually deviate from the desired position between adjoining printed patterns.
  • JP-A-56-122 750 an apparatus according to the preamble of claim 1 is described.
  • This known apparatus comprises small-diameter and large-diameter drums which are held alternately in direct contact with the tape, in accordance with the detected position of check marks.
  • Said apparatus is not capable of effectively adjusting tape position when a tape supply is operating at high speed.
  • the tape feeding apparatus includes a feed drum 1 mounted on a first shaft 31.
  • the feed drum 1 is in tangential contact with a free-rotating auxiliary drum 11 for frictionally transporting a tape T therebetween as the drums rotate.
  • the feed drum 1 has a circumference slightly shorter than the expected minimum length or standard length of patterns L printed on the tape T which is subject to expansion and/or shrinkage.
  • the feed drum 1 is replaceable.
  • a different tape, that is, a tape having a different length of patterns may be fed by means of this tape feeding apparatus simply by replacing the feed drum 1 by a new feed drum having a corresponding .circumference. Accordingly, the feed drum 1 is required to be removably mounted on the shaft 31 such that it is replaceable, but restricted against free rotation with respect to the shaft when mounted.
  • the large- and small-diameter drums 2 and 3 are slightly different in circumference. More specifically, when the small-diameter drum 3 has a circumference of 100 cm, the large diameter drum 2 has a circumference of 100.2 cm.
  • the large-diameter drum 2 is fixedly mounted on a second shaft 21 and the small-diameter drum 3 is fixedly mounted on the first shaft 31. Both the drums 2 and 3 are secured to the respective shafts by any suitable locking means, for example, a key as shown in Fig. 2.
  • Drive gears 25 and 35 having the same diameter and the same number of teeth are mounted for free rotation on the shafts 21 and 31, respectively.
  • the drive 35 is in mesh with the second drive gear 25 and with another gear (partially shown) which is constantly driven by a motor (not shown).
  • the drive gears 25 and 35 are rotating at a constant speed.
  • the drive shaft 21 having the large-diameter drum 2 secured thereto is provided with an electromagnetic clutch C 2 .
  • the electromagnetic clutch for the selective transmission of driving force may be of a well-known type.
  • the shaft 21 is extended through the drive gear 25 via a bearing 22 so that the shaft 21 is free of the constantly rotating drive gear 25.
  • a movable disc 23 is mounted on the drive shaft 21 such that the disc 23 is movable in the axial direction, but restricted in the circumferential or rotational direction with respect to the shaft 21.
  • an electromagnet 24 Located above the axially movable disc 23 is an electromagnet 24 which is adapted to receive an electrical signal from a photoelectric device to be described later.
  • the electromagnet 24 Upon receipt of an electrical signal, the electromagnet 24 is energized to urge the disc 23 in frictional contact with the drive gear 25 so that the rotational force of the drive gear 25 is transmitted to the shaft 21 via the disc 23. In the absence of such an electrical signal, or normally, the rotational force of the drive gear 25 is not transmitted to the shaft 21.
  • a unidirectional clutch C 3 is associated with the first drive gear 35.
  • the unidirectional clutch C 3 may also be of a well-known type.
  • the drive gear 35 is mounted for free rotation on the drive shaft 31 and has an annular rim 33 on its upper surface.
  • a toothed disc 32 is secured to the shaft 31, and received within the annular rim 33 of the gear 35. More particularly, each tooth of the disc 32 is oriented in one direction.
  • Steel balls are placed between the channels defined by the teeth of the disc 32 and the annular rim 33, and preferably, biased in one direction toward the apex of the teeth by a spring.
  • the tape T has check marks M which have been printed in black on the back surface or at any suitable position at the same time as substantially identical label patterns L.
  • the distance between two successive check marks M is equal to the length of a corresponding pattern printed on the tape T.
  • a photoelectric device R having light-emitting and light-sensing sections built therein is located in conjunction with the path of tape feed. This device R develops an electric signal when a light beam emitted from the light-emitting section impinges against a reflective portion of the tape surface (the surface portion other than black marks M) and the light-sensing section receives the reflected beam.
  • This type of photoelectric device is commercially available. It will be understood that other types of photoelectric device may equally be employed.
  • An electric circuit (not shown) connecting a power supply to the photoelectric device is designed such that the device is actuated accurately once per revolution of the drive gears 25 and 35.
  • a timing switch may be inserted between the power supply and the photoelectric device.
  • the timing switch may comprise a disc having a radial slit cut therein and a pair of photoelectric tubes disposed on opposite sides of the disc. The disc rotates at the same revolution per minute as the drive gears 25 and 35. Then the timing switch is closed to actuate the photoelectric device R each time when the drive gears 25 and 35 rotate once.
  • the tape T having substantially identical label patterns printed thereon is unwound from its roll and extended between the feed drum 1 and the auxiliary drum 11.
  • the leading edge of the tape is further guided to the subsequent processing station, for example, a cutter or a secondary printing machine.
  • the position of the tape T (or the position of a label pattern or check mark) and the closing time of the timing switch (or the position of the disc slit) are adjusted such thatthe photoelectric device R emits a light beam to a check mark when the mark passes the reference position in alignment with the photoelectric device.
  • the feed drum 1 is secured to the shaft 31 having the small-diameter drum 3 secured thereto, and the drive gear 35 is in driving engagement with the shaft 31 via the unidirectional clutch C 3 .
  • the drive gear 35 is constantly rotated by means of a motor via a suitable gear train. Then, in the normal condition, the feed drum 1 continues rotating with the drive gear 35.
  • the electromagnetic clutch C 2 is off.
  • the axially movable disc 23 is spaced apart from the drive gear 25 so that the drive gear 25 rotates independently of the shaft 21.
  • the transmission system of the gear 25, shaft 21 and large-diameter drum 2 is regarded absent.
  • the feed drum 1 Since the feed drum 1 is selected to have a circumference slightly shorter than the standard length of a pattern, a revolution of the feed drum 1 will feed the tape T by a length slightly shorter than the standard length of a pattern.
  • the photoelectric device R is actuated once per revolution of the feed drum 1. Then, with respect to the timing of light emission, the arrival of check marks M at the reference position is successively delayed, little by little. However, the photoelectric device does not develop an electric signal as long as the emitted light beam impinges on the check mark M and hence, the light beam is not reflected (see Fig. 5).
  • the tape feeding speed defined by the feed drum 1 is dependent on the peripheral speed of the large-diameter drum 2.
  • the tape feeding speed is increased to some extent.
  • the transmission system including the gear 35, shaft 31 and small-diameter drum 3 is regarded absent.
  • the tape feeding speed is increased after the delay has been detected (light beam reflected at the tape surface other than a check mark has been sensed). Thereafter, the light beam again impinges against a check mark M, and no reflection occurs and no electric signal is developed by the photoelectric device.
  • the electromagnetic clutch C 2 is de-energized, rendering the large-diameter drum 2 independent of the shaft 21.
  • the tape feeding speed is decreased again. Thereafter, the above-described initial drive procedure is repeated.
  • the feed drum is selectively driven via either the small-diameter drum or the large-diameter drum transmission system.
  • a variety of tapes having different lengths of substantially identical patterns or different constant spacings between the adjoining check marks can be fed by the apparatus of the present invention simply by replacing the feed drum by a new feed drum having a circumference matched with the length of a particular pattern.
  • the apparatus of the present invention is versatile in that it can handle a variety of tapes simply by replacing the feed drum.

Landscapes

  • Labeling Devices (AREA)
  • Advancing Webs (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
EP82109656A 1981-10-20 1982-10-19 Apparatus for feeding a tape Expired EP0077570B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP166435/81 1981-10-20
JP56166435A JPS5873533A (ja) 1981-10-20 1981-10-20 テ−プ状ラベルの送り装置

Publications (2)

Publication Number Publication Date
EP0077570A1 EP0077570A1 (en) 1983-04-27
EP0077570B1 true EP0077570B1 (en) 1985-08-28

Family

ID=15831352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109656A Expired EP0077570B1 (en) 1981-10-20 1982-10-19 Apparatus for feeding a tape

Country Status (4)

Country Link
EP (1) EP0077570B1 (enrdf_load_stackoverflow)
JP (1) JPS5873533A (enrdf_load_stackoverflow)
KR (1) KR860000009B1 (enrdf_load_stackoverflow)
DE (2) DE3265873D1 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144399U (ja) * 1982-03-23 1983-09-29 昭和電線電纜株式会社 水中吸音体
JPS618509U (ja) * 1984-06-22 1986-01-18 株式会社 協立双葉自動機 送りロ−ラの速度調整装置
JPH024020Y2 (enrdf_load_stackoverflow) * 1984-10-09 1990-01-30
US4984458A (en) * 1989-10-06 1991-01-15 A.M. International, Inc. System for measuring the relaxed length of a moving web
US4947685A (en) * 1989-10-06 1990-08-14 Am International, Inc. System for measuring the repeat length of a moving web
KR20150130862A (ko) 2014-05-14 2015-11-24 엘에스산전 주식회사 고압 직류 송전 시스템 및 그의 제어 방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122750A (en) * 1980-02-26 1981-09-26 Koyo Jidoki High speed feeder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519215A (en) * 1967-05-04 1970-07-07 Honeywell Inc Recording apparatus
DE2149754A1 (de) * 1971-10-05 1973-04-12 Ciba Geigy Ag Transportvorrichtung fuer bandfoermiges material
AT351937B (de) * 1973-04-17 1979-08-27 Nordmende Vorrichtung zum automatischen transport eines aufzeichnungstraegers
US3877627A (en) * 1973-10-26 1975-04-15 Eastman Kodak Co Pinch roller/capstan web drive

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56122750A (en) * 1980-02-26 1981-09-26 Koyo Jidoki High speed feeder

Also Published As

Publication number Publication date
KR830007404A (ko) 1983-10-21
EP0077570A1 (en) 1983-04-27
JPS5873533A (ja) 1983-05-02
DE3265873D1 (en) 1985-10-03
JPS619168B2 (enrdf_load_stackoverflow) 1986-03-20
DE77570T1 (de) 1983-12-22
KR860000009B1 (ko) 1986-01-30

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