EP0765831A1 - Apparat zum Stossverbinden von Bahnen - Google Patents

Apparat zum Stossverbinden von Bahnen Download PDF

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Publication number
EP0765831A1
EP0765831A1 EP96202666A EP96202666A EP0765831A1 EP 0765831 A1 EP0765831 A1 EP 0765831A1 EP 96202666 A EP96202666 A EP 96202666A EP 96202666 A EP96202666 A EP 96202666A EP 0765831 A1 EP0765831 A1 EP 0765831A1
Authority
EP
European Patent Office
Prior art keywords
web
vacuum
drums
drum
cut
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Withdrawn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
EP96202666A
Other languages
English (en)
French (fr)
Inventor
Michael C/O Eastman Kodak Company Long
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 US08/572,322 external-priority patent/US5698060A/en
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP0765831A1 publication Critical patent/EP0765831A1/de
Withdrawn legal-status Critical Current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
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1857—Support arrangement of web rolls
    • B65H19/1873—Support arrangement of web rolls with two stationary roll supports carrying alternately the replacement and the expiring roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
    • B65H19/1826—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll
    • B65H19/1836—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll the replacement web being accelerated or running prior to splicing contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/4602—Preparing splicing process
    • B65H2301/46024—Preparing splicing process by collecting a loop of material of the fresh web downstream of the splicing station
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/462—Form of splice
    • B65H2301/4623—Spaced article or web portions, i.e. gap between edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/464—Splicing effecting splice
    • B65H2301/46414—Splicing effecting splice by nipping rollers
    • B65H2301/464145—Splicing effecting splice by nipping rollers at least one of the rollers having additional feature, eg. knife or at least partly non-cylindrical shape

Definitions

  • the invention relates generally to apparatus for splicing flexible materials, such as webs, and the like. More particularly, the invention concerns an apparatus for splicing a leading end of a first web with a trailing end of a second web to form a new continuous web under high speed operating conditions and without the necessity of frequent interruption of the web conveyance process.
  • Apparatus for splicing flexible material are well known in the art.
  • a typical apparatus and method for forming butt joints between webs or flexible material the webs are cut while in an overlapping relations to form abutting ends.
  • One end of one of the webs is separated while being conveyed so that the two cut ends to be joined are in abutting relations with one another.
  • splice tape is applied to the abutting ends to form the butt joint.
  • US-A-4,363,695 discloses one such device for splicing together rolls of web.
  • the device includes means for accelerating a new stockroll of film up to the speed of an expiring web while discarding the potentially damaged outer convolutions of the webs.
  • Splicing tape is applied to overlapping end portions of the webs in a rolling motion by entrapping air bubbles between the splicing tape and the webs to be joined so as to avoid weakening the splice.
  • An object of the present invention is, for example, to provide an apparatus for splicing abutting ends of webs substantially free of a gap or overlap.
  • Another object of the present invention is, for example, to provide an apparatus for alternatingly feeding rolls of webs into one of two conveyance arrangements and ultimately splicing just-cut ends of both webs without having to interrupt the conveyance process.
  • an apparatus for splicing a first, expiring web to a second, fresh web comprising a first, ported, full circumference vacuum drum and a second, ported, full circumference vacuum drum which is capable of being urged toward the first drum.
  • the apparatus includes means for supplying the expiring web to one of the first and second vacuum drums as well as means for supplying the fresh web to another of the first and second vacuum drums.
  • the first and second vacuum drums are enabled to transport in alternating sequence the other of the expired and fresh webs.
  • a first cutting member is mounted on one of the first and second vacuum drums in a portion of a circumference of the drum where vacuum is applied.
  • a second cutting member is mounted on the other of the first and second vacuums drums in a portion of a circumference of the drum where vacuum is applied.
  • the cutting members are capable of cooperating with one another for cutting the webs.
  • the apparatus includes a third, full circumference vacuum drum and a fourth, at least partial circumference vacuum drum. Means for applying a first strip of splice tape to the fourth drum is also provided.
  • means are provided for moving the first and second drums into proximity to cause the first and second cutting members to cooperate for cutting the first and second webs between the first and second drums, so that a just-cut leading end of the expiring web remains with one of the first and second vacuum drums and a just-cut trailing end of the fresh web remains with the other of the first and second vacuum drums. Also, means for moving the first and third vacuum drums into proximity is provided.
  • the splicing apparatus also includes means cooperating with the moving means, as described above, for causing a just-cut trailing end of the expiring web and a just-cut leading end of the fresh web to transfer from the first drum to the third drum.
  • this embodiment of the invention includes means for moving the third and fourth drums into proximity to cause the first strip of splice tape to be applied across the trailing end of the expiring web and leading end of the fresh web, to form a spliced web.
  • a method of butt-joining webs comprises the steps of providing elements including a first and second vacuum drum for supporting the web and providing first and second cutting members, each being mounted on the first and second vacuum drums, respectively, in a portion of the circumference where vacuum is applied, each element as described above. Further, the step of supplying an expiring web to one of the first and second vacuum drums and supplying a fresh web to another of the first and second drum is included in the invention. The first and second drums are moved into proximity to cause the first and second cutting members to cooperate to form a just-cut leading end and a just-cut trailing end of the webs.
  • the trailing end of the just cut expiring web and the leading end of the just cut fresh web are moved in abutting alignment for subsequent joining.
  • Splicing tape is provided for engageably joining the ends of the webs into abutting alignment.
  • the just-cut leading end of the expiring web, and alternately the just cut trailing end of the fresh web are deflected away from the splicing tape so as to provide easy access to one side of the ends of the webs to be joined.
  • a first strip of splice tape is applied across one side of the trailing end of the expiring web and the leading end of the fresh web thereby forming a spliced web.
  • the apparatus 10 for splicing a first, expiring web 47 to a second, fresh web 48 comprises first and second, ported, full circumference vacuum drums 21 , 20 .
  • Means for supplying the expiring web 47 to one of the first and second vacuum drums 21 , 20 is provided.
  • means for supplying the fresh web 48 to another of the first and second vacuum drums 21 , 20 is provided.
  • the expiring web 47 and fresh web 48 are sequentially transported by one of the first and second vacuum drums 21 , 20 at the end of a splicing cycle, as described below.
  • a first cutting member, or knife, 42 is mounted on one of the first and second vacuum drums 21 , 20 in a portion of a circumference of the drum where vacuum is applied.
  • a second cutting member, or counter-knife, 40 capable of cooperating with the first cutting member 42 is mounted on the other of the first and second vacuum drums 21 , 20 in a portion of a circumference of the drum where vacuum is applied.
  • third, at least partial circumference and fourth, full circumference vacuum drums 32 , 33 are provided.
  • a just-cut leading end 47a of the expiring web 47 remains with one of the first and second vacuum drums 21 , 20 and a just-cut trailing end 48a of the fresh web 48 remains with the other of the first and second vacuum drums 21 , 20 .
  • the apparatus 10 also includes means for moving the third and fourth drums 32 , 33 into proximity to cause the first strip of splice tape to be applied across the trailing end of the expiring web 47 and leading end of the fresh web 48 , to form a spliced web.
  • a first web supply stockroll 31 delivers web to a continuous running process and is guided through the splicing apparatus over web supports 25 and 26 .
  • Figure 4 depicts a second web supply stockroll 30 delivering web to the continuous running process and is guided through the splicing apparatus over web supports 28 and 26 .
  • Web support 25 and idler roller 23 are independently attached to thread-up guide 2 7.
  • Thread-up guide 27 is arranged to pivot about the center of web support 28 for urging idler roller 23 alternately into engagement with stationary idler roller 22 and idler roller 29 .
  • drums 20 , 32 and 34 are preferably belted together for rotating in a counterclockwise direction at a common peripheral velocity.
  • drums 21 , 33 and 35 , or second drum triad, mounted for transalational movement, as described below are preferably belted together for rotating in a clockwise direction at a common peripheral velocity substantially equal to that of drums 20 , 32 and 34 .
  • peripheral velocities of the drums may vary and that the velocity of drums 20 , 32 and 34 may be greater than or less than the velocity of drums 21 , 33 and 35 .
  • a cam actuated linear actuator 46 displaces block 45 supporting drums 21 , 33 and 35 toward stationary drums 20 , 32 and 34 .
  • the upward displacement of block 45 is synchronized with the rotation of the vacuum drums 21 , 33 and 35 such that the expiring web 47 does not contact drum 35 until after adhesive tape segment 44 has rotated pass its engagement point with the expiring web 47 .
  • This sequence of events can be achieved with a timing sequence such as the one illustrated in Fig. 10 which shows the operations of the various components of the invention as well as vacuum and air ports.
  • first and second drum triads are synchronized such that first cutting member, or knife, 42 cooperates with second cutting member, or counter knife, 40 , to sever both the new and expiring webs 48 , 47 at a common longitudinal position.
  • drum 32 rotates splice tape segment 43 into contact with the upper surface of the two webs 47 , 48 to apply a first segment of splice tape, centered over the just-cut ends of the new and expiring webs 47 , 48 .
  • drum 35 rotates splice tape 44 into abutment with the underside of the new and expiring webs 47 , 48 , centered on their freshly joined ends.
  • the rotational positions of the first and second drum triads are further synchronized with the downward displacement of the linear actuator 46 such that support block 45 begins to separate drums 21 , 33 and 35 from drums 20 , 32 and 34 when drums 21 , 33 and 35 are in the angular positions depicted in Figure 3.
  • a full revolution of drums 21 , 33 and 35 after contacting drums 20 , 32 , and 34 , results in drums 20 and 21 separating an amount sufficient to prevent knife 42 and counter knife 40 from cooperatively engaging one another and thereby cutting the two webs 47 , 48 a second time.
  • drum 20 (Fig. 2)is automatically fed web from a first web supply stockroll 30 in cooperation with stationary idler roller 22 and movable idler roller 23 such that the web end is acquired by drum 20 about a portion of its periphery through the aid of vacuum ports 0 , 1 , 2 and 3 (Fig. 9).
  • the web enters an upper scrap chute 24 (Figs. 2-4) and remains in this position until a splice is requested.
  • the new stockroll 30 is accelerated to match the web speed of expiring web 47 through vacuum assisted frictional contact with driven drum 20 . This removes the potentially damaged outer convolutions of web from stockroll 30 and discards them into first scrap chute 24 .
  • stationary disk 62 comprises at least one opening 66 for communicating air and vacuum to various ports.
  • rotating disk 64 includes at least one arcurate recess 70 communicating with sources of vacuum or compress air (not shown). Vacuum ports 6 and 7 in drum 21 will be ported to a vacuum source just before severing the webs in order to acquire the just-cut leading end of expiring web 47 and divert it around drum 21 into second scrap chute 41 . Simultaneously, the freshly cut trailing end of new web 48 continues around drum 20 and into first scrap chute 24 .
  • the just-cut trailing end 47b of web 47 and the just-cut leading end 48b of web 48 are brought into butted alignment against the surface of drum 33 .
  • a segment of splicing tape carried on drum 32 is brought into rolling contact with the two webs 47 , 48 , centered longitudinally across one side of the just-cut web ends to form a spliced web illustrated in Figs. 13 and 14.
  • a second segment of splicing tape carried on drum 35 may be brought into rolling contact with the underside of the two webs, centered longitudinally across the just-cut spliced web ends (Figs. 13 and 14).
  • drum 21 is automatically fed web from a second web supply stockroll 31 in cooperation with stationary idler roller 29 and movable idler roller 23 .
  • the web end is acquired by drum 21 about a portion of its periphery through the aid of vacuum ports 5 , 6,and 7 .
  • the web enters a lower scrap chute 41 and remains in this position until a splice is requested.
  • the new stockroll 31 is accelerated to match the web speed of the expiring web 48 through vacuum assisted frictional contact with driven drum 21 . This removes the potentially damaged outer convolutions of web from stockroll 31 and discards them into second scrap chute 41 .
  • Vacuum port 6 in drum 21 will be ported to a source of compressed air just before severing the webs in order to divert the freshly cut leading end of new web 47 away from drum 21 toward the contact point between drums 20 and 33 .
  • an auxiliary source of compressed air or a film guide 49 is preferred at high speeds with very thin and flexible webs in order to reliably divert the film end away from drum 21 and onto the vacuum ported periphery of drum 33 in butted alignment with the just-cut trailing end of expiring web 48 (Fig. 12).
  • a segment of splicing tape carried on drum 32 is brought into rolling contact with the two webs, centered longitudinally across the freshly cut web ends.
  • a second segment of splicing tape carried on drum 35 may be brought into rolling contact with the underside of the two webs, centered longitudinally across the freshly spliced ends (Figs. 13-14).
  • the second drum triad begins to move away from the first drum triad and thread-up chute 27 begins to rotate toward idler roller 22 to deflect expired web 48 out of the straight line path of the new web 47 across web supports 25 and 26 (Fig. 6).
  • the vacuum drums continue to rotate in the open position until all of expired web 48 has been removed from the core of stockroll 30 and eliminated through scrap chute 24 .
  • vacuum ports 0 , 1 , 2 , and 3 are supplied with vacuum to acquire a free end of the fresh web 47 .
  • vacuum ports 6 and 7 of vacuum drum 21 are ported to vacuum (by a valve arrangement of the type shown in Fig. 14) to adhere the just-cut leading end of the expiring web 48 to vacuum drum 21 and thus divert it into a scrap chute 41 while vacuum port 2 is switched to compressed air to divert the just-cut leading end of the fresh web 47 onto drum 33 .
  • the just-cut trailing end of the fresh web 47 adheres to vacuum drum 20 and follows it into a scrap chute 24 .
  • the just-cut trailing end of the expiring web bends around vacuum drum 20 and continues onto vacuum drum 33 (Fig. 12) where splice tape 43 is applied, joining it to the just-cut lead end of the fresh web 47 thereby forming an web butt-splice.
  • Vacuum drum 35 applies a second length of tape 44 to the opposite side of the web butt splice (Fig. 14). After the splice, ports 5 , 6 , and 7 are supplied with vacuum to enable drum 21 to pull the core waste off of the right stockroll.
  • Vacuum ports 4 , 8 , 9 , 10 , 11 , 12 , 13 , and 14 are not needed at low speeds and become useful only at higher web speeds, for example, web speeds greater than about 400 ft./min.
  • ports 5 , 6 , and 7 are supplied with vacuum to acquire and accelerate the new web end.
  • ports 6 and 7 remain ported to vacuum to retain the freshly cut trailing end of the new web and channel it into a waste chute 41 .
  • Ports 1 , 2 and 3 are supplied with vacuum in order to retain the freshly cut lead end of the expiring end and divert it into a second scrap chute 24 .
  • the just-cut lead end of the new web 48 must be diverted to follow drum 20 instead of its otherwise straight line path generally toward the center of drum 33 by a blast of air from port 9 or by a diverting chute 49 .
  • the just cut trailing end of the expiring web 48 bends around drum 20 and continues onto drum 33 where splicing tape 43 is applied, joining it to the just-cut lead end of the new web 47 .
  • Drum 6 applies a second length of tape to the opposite side of the splice. After the splice has been accomplished, ports 0 , 1 , 2 and 3 are supplied with vacuum to enable drum 20 to pull the core waste web off of the left stockroll.

Landscapes

  • Replacement Of Web Rolls (AREA)
EP96202666A 1995-09-29 1996-09-24 Apparat zum Stossverbinden von Bahnen Withdrawn EP0765831A1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US453095P 1995-09-29 1995-09-29
US4530 1995-09-29
US08/572,322 US5698060A (en) 1995-12-14 1995-12-14 Web butt-splicing apparatus
US572322 1995-12-14

Publications (1)

Publication Number Publication Date
EP0765831A1 true EP0765831A1 (de) 1997-04-02

Family

ID=26673123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96202666A Withdrawn EP0765831A1 (de) 1995-09-29 1996-09-24 Apparat zum Stossverbinden von Bahnen

Country Status (2)

Country Link
EP (1) EP0765831A1 (de)
JP (1) JPH09136747A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005037182A1 (de) * 2005-08-06 2007-02-15 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren zum Abkleben einer Bandverbindung und Klebebandapplikator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745464A (en) * 1952-12-18 1956-05-15 Champlain Company Inc Automatic butt splicer
GB1400684A (en) * 1972-01-27 1975-07-23 Hanssen Cie Const Mec Devices for connecting two strips
GB2135283A (en) * 1983-02-15 1984-08-30 Gd Spa Splicing webs
US4492609A (en) * 1981-03-12 1985-01-08 Windmoller & Holscher Apparatus for splicing the trailing end of a web from an exhausted supply roll to the leading end of a web from a new supply roll
EP0625474A1 (de) * 1993-04-09 1994-11-23 AZIONARIA COSTRUZIONI MACCHINE AUTOMATICHE-A.C.M.A.-S.p.A. Rollenwechselvorrichtung zum Zuführen von bandenförmigem Material zu einer Bearbeitungsmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2745464A (en) * 1952-12-18 1956-05-15 Champlain Company Inc Automatic butt splicer
GB1400684A (en) * 1972-01-27 1975-07-23 Hanssen Cie Const Mec Devices for connecting two strips
US4492609A (en) * 1981-03-12 1985-01-08 Windmoller & Holscher Apparatus for splicing the trailing end of a web from an exhausted supply roll to the leading end of a web from a new supply roll
GB2135283A (en) * 1983-02-15 1984-08-30 Gd Spa Splicing webs
EP0625474A1 (de) * 1993-04-09 1994-11-23 AZIONARIA COSTRUZIONI MACCHINE AUTOMATICHE-A.C.M.A.-S.p.A. Rollenwechselvorrichtung zum Zuführen von bandenförmigem Material zu einer Bearbeitungsmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005037182A1 (de) * 2005-08-06 2007-02-15 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren zum Abkleben einer Bandverbindung und Klebebandapplikator

Also Published As

Publication number Publication date
JPH09136747A (ja) 1997-05-27

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