EP0427126A1 - Device for changing a band - Google Patents

Device for changing a band Download PDF

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Publication number
EP0427126A1
EP0427126A1 EP19900121006 EP90121006A EP0427126A1 EP 0427126 A1 EP0427126 A1 EP 0427126A1 EP 19900121006 EP19900121006 EP 19900121006 EP 90121006 A EP90121006 A EP 90121006A EP 0427126 A1 EP0427126 A1 EP 0427126A1
Authority
EP
European Patent Office
Prior art keywords
belt
tape
changing device
pressure roller
changer
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.)
Granted
Application number
EP19900121006
Other languages
German (de)
French (fr)
Other versions
EP0427126B1 (en
Inventor
Joachim Dipl.-Ing. Stroszynski
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Priority to AT90121006T priority Critical patent/ATE102892T1/en
Publication of EP0427126A1 publication Critical patent/EP0427126A1/en
Application granted granted Critical
Publication of EP0427126B1 publication Critical patent/EP0427126B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B65H19/1868—The roll support being of the turret type
    • 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
    • B65H2301/463—Splicing splicing means, i.e. means by which a web end is bound to another web end
    • B65H2301/4631—Adhesive tape
    • B65H2301/46312—Adhesive tape double-sided
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/5742—Clamp moved by direct impact of tool or tool support
    • Y10T83/5751—Clamp retracted by impact of tool or tool support

Definitions

  • the invention relates to a tape changing device for the flying tape change from a running tape to a new tape, each of which goes through several processing steps in an in-line tape system, each with an unwinding station for the running and the new tape.
  • the band change begins with the cutting of the old band, for which a roller knife running underneath the old band is used.
  • the new tape is pressed against the running tape by a pressure roller so that a firm adhesive connection of the tape start of the new tape reel with the old tape is created, with the tape start of the new tape with a double-sided adhesive tape is occupied.
  • the cutting knife works on the fly and across the tape running direction.
  • the cut quality and tape connection achieved are not optimal.
  • the belt changing device is not very suitable for full automation and requires a lot of attention and skill from the staff when changing the belt.
  • the production losses and material losses resulting from a failed belt change are high, and with increasing working speed this known belt change system becomes more and more problematic in its operation.
  • the object of the invention is to improve a tape changing device of the type described in such a way that, with simple operability, even at high tape speeds of 50 m / min and more, an excellent adhesive bond between the running tape and the new tape with a short free coverage of, for example, not more than 250 mm at the end of the adhesive connection is achieved with little design effort and little space for the tape changing device.
  • the tape changing device comprises a tape changer as a central part in addition to the unwinding stations, that the unwinding stations are set up separately from one another and that the new and the running tape of tape reels in the unwinding stations are fed to the tape changer and in this V-shape are brought together from top to bottom in a pressure roller unit in which the running and the new belt can be joined.
  • the running and the new belt are guided separately up to the pressure roller unit.
  • the end section of the running tape is separated from the running tape in front of the pressure roller unit with the aid of rotary cross-cutters and the adhesive connection of the running tape is made in the pressure roller unit with a dry adhesive film previously applied to the new tape.
  • the advantages are achieved that the flying tape change between the running and the new tape is achieved only with a slight overlap of about 250 mm of the adhesive point, that the adhesive connection is pressed smoothly and firmly, that the end portion of the running Band is cut right and right-angled and that with a one-man operation of the band changing device the flying band change can be safely controlled and carried out.
  • a tape changing device 1 shown schematically in FIG. 1 comprises a centrally arranged tape changer 2, on the left and right side of which an unwinding station 3 or 4 is arranged.
  • the tape changer 2 is vertical, and a new tape 5 and a running tape 6 are fed from tape reels 7 and 8 in the unwinding stations 3 and 4 to the tape changer 2.
  • the band windings 7 and 8 are driven by a motor, and the bands 5 and 6 are guided upwards by the band windings 7 and 8 around deflection rollers 38, 39 and pass horizontally through chambers 32, 33, in which the surface of the respective running band 5 or 6, for example is degreased using steam or compressed air.
  • the tape 5 runs counterclockwise from the tape roll 7, but it can also run clockwise, as is indicated by dash-dotted lines in Fig. 1.
  • the belt changer 2 comprises two stands 12 and 13, in the upper sections of which there is a pressure roller unit 10 or 11, which consists of a pressure roller 14 or 16 and a counter pressure roller 15 or 17.
  • Cross cutters 19, 20, which are, for example, rotary cross cutters, are arranged in pairs on a cross member 18 of the belt changer 2.
  • Each of the cross cutters 19, 20 comprises two rollers 21, 22 and 23, 24, respectively.
  • a cutting blade 25 is attached to each of these rollers 21 to 24.
  • the cutting blades in the case of rotary cross cutters 19, 20 form with the rollers 21, 22 and 23, 24 cutter bars which are rotated back and forth by 180 ° during the cutting by means of pneumatically driven rotary pistons.
  • a tape changing device 1 with cross cutters as separation systems for the tapes with which a tape change is carried out is particularly suitable at high tape speeds of more than 50 m / min. The strips are cut right-angled or almost right-angled and clean.
  • the cross cutters can also be synchronous cross cutters with a cutting speed equal to that Continuously rotating belt running speed
  • the interacting rollers of a single cross cutter 19 or 20 are coupled to one another via gear wheels.
  • cross cutter consists of a fixed bar knife and a rotary cross cutter.
  • An embodiment is also suitable, which is constructed from a fixed and a movable bar knife.
  • the tapes 5 and 6 are guided within the tape changer 2 in channels 26, 27 converging in a V-shape. Within these channels 26, 27 there are rotary stops 28, 29 near the lower end of the channels, which can be pivoted into the path of movement of the belts 5, 6.
  • the belts 5 and 6 run in the channels 26, 27 in a V-shape from top to bottom and are brought together in a pressure roller unit 9, in which the outgoing and the new belt are joined.
  • the pressure roller unit 9 consists of a drive roller 30 and a pneumatically operated pressure roller 31.
  • the drive roller 30 works as the main brake roller, and there is a very high line pressure between the drive roller 30 and the pressure roller 31.
  • the pressure roller 31 is already in the working position before the active one Belt change process starts.
  • a double-sided adhesive strip is glued to the tape beginning of the happy tape 5.
  • the tape start prepared in this way is advanced or advanced in the pressure roller unit 10 when the pressure roller 14 is raised until it abuts the rotary stop 28 in the channel 26 which is pivoted into the movement path.
  • the pressure rollers 14 and 16 of the pressure roller units 10, 11 are each equipped with a backstop and have an overrunning clutch on the drive side.
  • the pressure rollers 14, 16 are lowered as required, for example when a tape change is initiated, only the pressure roller 14 is lowered and then driven. At the same time, the tape winding 7 can be accelerated.
  • the belts 5, 6 are assembled in the pressure roller unit 9, the new belt 5 runs at the same working speed as the running belt 6, which was previously cut.
  • the pressure rollers 14 and 16 are synchronized with the belt speed with regard to their rotational speed. After the belt has been changed, the pressure rollers 14, 16 are lifted off the counter pressure rollers 15 and 17.
  • the rotary stop 29 in the channel 27 is pivoted out of the movement path of the running belt 6, which is passed between the drive roller 30 and the pressure roller 31.
  • the An The leading edge of the new band 5 lies against the rotary stop 28 pivoted into the movement path in the channel 26.
  • the adhesive strip 40 applied to the initial section of the new tape 5 is indicated enlarged in FIG. 1 and ends approximately 1 to 2 cm in front of the front edge of the tape 5.
  • the pressure roller 14 is pressed onto the counter-pressure roller 15 of the pressure roller unit 10 in this holding position of the new tape 5 .
  • the band 6, which runs off the band angle 8 is cut or cut.
  • the rotary stop 28 is pivoted out of the movement path in the channel 26, and the beginning of the tape 5 with the adhesive strip 40 is advanced by the driven pressure roller 14 into the pressure zone of the pressure roller unit 9.
  • the beginning of the belt 5 is pressed onto the running belt 6.
  • the belt 5 is inserted between the drive or main brake roller 30 and the pressure roller 31, where there is a very high line pressure , which causes a firm adhesive connection between the adhesive strip 40 of the new tape 5 and the running tape 6.
  • the separating cut on the ablaurender tape 6 is made to match the tape speed of the tape 6 and the running speed of the new tape 5 such that the tape 6 completely covers the adhesive tape 40 and shortly thereafter ends with a free overlap of the adhesive tape, the overlap in is of the order of 100 to 250 mm. Since the cut perpendicular to the band 6 or takes place almost at right angles through the rotary cross cutter 20, a very clean, not serrated adhesive connection is created between the new band 5 and the running band 6.
  • the belt changing device 1 shown in FIG. 1 is particularly suitable for high and very high belt speeds in the range of 50 m / min and higher.
  • the arrangement of the unwinding stations 3 and 4 shown symmetrical to the tape change 2 is very favorable in relation to the tape guide and the operation of the tape change device 1 on site.
  • the unwinding stations 3 and 4 are equipped, for example, with a one-sided, free-standing mandrel that receives the respective band windings 7 and 8, which can be pushed onto the mandrel with a special lifting carriage.
  • a work platform, not shown, is usually located above the tape rolls 7 and 8.
  • a work table between the deflecting roller 38 and the pressure roller unit 10 in the area of the new tape 5 there is a work table, not shown, on which the adhesive tape 40 can be applied to the start section of the new tape 5 by hand or automatically by an adhesive tape dispenser.
  • an adhesive layer can also be applied to the start of the new tape 5 manually or with the aid of an adhesive dispenser.
  • the tapes 5 and 6 are primarily aluminum tapes that form the basis for the production of printing plates, but the tape is Change device also suitable for tapes made of other metals, plastic, paper or similar materials. After the prepared tape start has been introduced into the tape changing device 1 until the initial edge abuts the rotary stop 28, the tape change can be triggered at any desired time, as described above.
  • FIG. 2 schematically shows a tape changing device 1, which is constructed similarly to the embodiment according to FIG. 1 and consists of a tape changer 2 and symmetrical to this unwinding stations 36 and 37 which are arranged to the left and right thereof and which are standard unwinding stations deals with double-sided suspension of the tape wrap.
  • a tape changing device 1 which is constructed similarly to the embodiment according to FIG. 1 and consists of a tape changer 2 and symmetrical to this unwinding stations 36 and 37 which are arranged to the left and right thereof and which are standard unwinding stations deals with double-sided suspension of the tape wrap.
  • the remaining components of this embodiment of the tape changing device 1 largely correspond to the embodiment according to FIG. 1, so that they are not described again.
  • FIG. 3 schematically shows a further embodiment of the tape changing device 1, in which the two unwinding stations 34 and 35 are arranged on one side of the tape changer 2.
  • the two unwinding stations 34, 35 which are provided with mandrels, for example, are located on one side of the belt changer and do not flank them symmetrically.
  • the unwinding station 35 with the running tape 6 is arranged next to the tape changer 2.
  • the tape 6 drawn off the tape roll of the unwinding station 35 is guided obliquely upwards over two deflecting rollers 43 and 44 and arrives after the deflecting roller 44 into the pressure roller unit 10 and from there between the rotary cross cutter 19 into the pressure roller unit 9.
  • the unwinding station 34 for the new one Band 5 is located further away from the band changer 2.
  • the new tape 5 to be unwound is guided obliquely downward and transported horizontally via deflecting rollers 41 and 42. After the deflecting roller 42, the belt 5 is guided upwards over the deflecting roller 39 horizontally into the pressure roller unit 11 and then guided downwards between the rotary cross cutter 20 and into the pressure roller unit 9 in the same manner as it is based on the embodiment according to FIG 1, the new band 5 and the running band 6 are joined together.
  • the time for cutting through the running belt 6 compared to the switch-on time for driving the upper pressure roller 14 of the pressure roller unit 10 for the new, i.e. tape 5 to be unwound was brought forward by about 3 seconds.
  • the adhesive connections were pressed on smoothly and firmly and had a length of up to 600 mm.
  • the operating functions of the tape changing device 1 are advantageously combined for one-man operation in a keypad, so that the tape change can be triggered from one point.

Abstract

A device (1) for flying band change consists of an unwinding station (3) and an unwinding station (4) which are arranged left and right of a band changer (2). A new band (5) and, respectively, a band (6) which is running out are guided together from the unwinding stations in the band changer (2) in a V-shaped manner from top to bottom through channels (26, 27) in a pressure roller unit (9). The band changer (2) moreover has rotational cross cutters (19, 20) for cutting the bands (5) and (6). The new band (5) is provided with an adhesive strip (40) which leads to an adhesive connection with the band (6) which is running out in the pressure roller unit (9). <IMAGE>

Description

Die Erfindung betrifft eine Bandwechselvorrichtung für den fliegenden Bandwechsel von einem ablaufenden Band zu einem neuen Band, von denen jedes in einer in-line Bandanlage mehrere Bearbeitungsschritte durchläuft, mit je einer Abwickelstation für das ablaufende und das neue Band.The invention relates to a tape changing device for the flying tape change from a running tape to a new tape, each of which goes through several processing steps in an in-line tape system, each with an unwinding station for the running and the new tape.

Bei in-line arbeitenden Bandanlagen, in denen beispiels­weise Aluminiumbänder gebeizt, aufgerauht, anodisiert, beschichtet, konfektioniert werden, muß das von einem Bandwickel ablaufende Band mit dem nachfolgenden Band eines neuen Bandwickels verbunden werden, ohne daß die Behandlung des Bandes in den nachgeschalteten Anlagen unterbrochen wird. Hierzu werden üblicherweise zwischen den Abwickelstationen und den Behandlungsanlagen Band­speicher großer Kapazität aufgestellt.In the case of in-line belt systems, in which, for example, aluminum strips are pickled, roughened, anodized, coated, and assembled, the strip running from a strip reel must be connected to the subsequent strip of a new strip reel without interrupting the treatment of the strip in the downstream systems becomes. For this purpose, tape storage devices of large capacity are usually set up between the unwinding stations and the treatment plants.

Bei einer bekannten mehrsternigen Wendeabwickelstation beginnt der Bandwechsel mit dem Durchtrennen des alten Bandes, für das ein unterhalb des alten Bandes querlau­fendes Rollmesser verwendet wird. In zeitlicher Abstim­mung mit dem davoneilenden Bandende wird das neue Band von einer Andruckwalze gegen das ablaufende Band so an­gedrückt, daß eine feste Klebeverbindung des Bandanfangs des neuen Bandwickels mit dem alten Band entsteht, wo­bei vorab der Bandanfang des neuen Bandes mit einem doppelseitigen Klebeband belegt wird. Das Trennmesser arbeitet bei diesem Bandwechsel fliegend und quer zur Bandlaufrichtung. Die dabei erreichte Schnittqualität und Bandverbindung ist nicht optimal. Die Bandwechsel­einrichtung eignet sich wenig für eine Vollautomati­sierung und erfordert vom Personal hohe Aufmerksamkeit und viel Geschick beim Bandwechsel. Die bei einem miß­glückten Bandwechsel entstehenden Produktionsausfälle und Materialverluste sind hoch, und mit zunehmender Ar­beitsgeschwindigkeit wird dieses bekannte Bandwechsel­system immer problematischer in seiner Bedienung.In a known multi-star reversing unwinding station, the band change begins with the cutting of the old band, for which a roller knife running underneath the old band is used. In time coordination with the end of the tape, the new tape is pressed against the running tape by a pressure roller so that a firm adhesive connection of the tape start of the new tape reel with the old tape is created, with the tape start of the new tape with a double-sided adhesive tape is occupied. With this tape change, the cutting knife works on the fly and across the tape running direction. The cut quality and tape connection achieved are not optimal. The belt changing device is not very suitable for full automation and requires a lot of attention and skill from the staff when changing the belt. The production losses and material losses resulting from a failed belt change are high, and with increasing working speed this known belt change system becomes more and more problematic in its operation.

Aufgabe der Erfindung ist es, eine Bandwechselvorrich­tung der eingangs beschriebenen Art so zu verbessern, daß bei einfacher Bedienbarkeit selbst bei hohen Band­laufgeschwindigkeiten von 50 m/min und mehr eine ausge­zeichnete Klebeverbindung zwischen dem ablaufenden und dem neuen Band mit einer kurzen freien Überdeckung von bspw. nicht mehr als 250 mm am Ende der Klebeverbindung mit geringem konstruktivem Aufwand und geringem Platz­bedarf für die Bandwechselvorrichtung erreicht wird.The object of the invention is to improve a tape changing device of the type described in such a way that, with simple operability, even at high tape speeds of 50 m / min and more, an excellent adhesive bond between the running tape and the new tape with a short free coverage of, for example, not more than 250 mm at the end of the adhesive connection is achieved with little design effort and little space for the tape changing device.

Diese Aufgabe wird erfindungsgemäß in der Weise gelöst, daß die Bandwechselvorrichtung neben den Abwickelsta­tionen einen Bandwechsler als Zentralteil umfaßt, daß die Abwickelstationen voneinander getrennt aufgestellt sind und daß das neue und das ablaufende Band von Band­wickeln in den Abwickelstationen dem Bandwechsler zuge­führt und in diesem V-förmig von oben nach unten in ei­ner Anpreßwalzeneinheit zusammengeführt sind, in der das ablaufende und das neue Band zusammenfügbar sind.This object is achieved in such a way that the tape changing device comprises a tape changer as a central part in addition to the unwinding stations, that the unwinding stations are set up separately from one another and that the new and the running tape of tape reels in the unwinding stations are fed to the tape changer and in this V-shape are brought together from top to bottom in a pressure roller unit in which the running and the new belt can be joined.

Die weitere Ausgestaltung der Bandwechselvorrichtung ergibt sich aus den Merkmalen der Unteransprüche.The further configuration of the belt changing device results from the features of the subclaims.

Bei der Bandwechselvorrichtung nach der Erfindung wer­den das ablaufende und das neue Band bis zu der Anpreß­walzeneinheit getrennt geführt. Der Endabschnitt des ablaufenden Bandes wird vor der Anpreßwalzeneinheit mit Hilfe von Rotationsquerschneidern von dem ablaufenden Band abgetrennt und in der Anpreßwalzeneinheit die Kle­beverbindung des ablaufenden Bandes mit einem zuvor auf das neue Band aufgebrachten trockenen Klebefilm herge­stellt.In the belt changing device according to the invention, the running and the new belt are guided separately up to the pressure roller unit. The end section of the running tape is separated from the running tape in front of the pressure roller unit with the aid of rotary cross-cutters and the adhesive connection of the running tape is made in the pressure roller unit with a dry adhesive film previously applied to the new tape.

Mit der Bandwechselvorrichtung nach der Erfindung wer­den die Vorteile erzielt, daß der fliegende Bandwechsel zwischen dem ablaufenden und dem neuen Band nur mit ei­ner geringen Überdeckung von etwa 250 mm der Klebestel­le erreicht wird, daß die Klebeverbindung glatt ange­drückt und fest ist, daß der Endabschnitt des ablaufen­den Bandes saüber und rechtwinklig abgeschnitten ist und daß mit einer Ein-Mann-Bedienung der Bandwechsel­vorrichtung der fliegende Bandwechsel sicher beherrscht und durchgeführt werden kann.With the tape changing device according to the invention, the advantages are achieved that the flying tape change between the running and the new tape is achieved only with a slight overlap of about 250 mm of the adhesive point, that the adhesive connection is pressed smoothly and firmly, that the end portion of the running Band is cut right and right-angled and that with a one-man operation of the band changing device the flying band change can be safely controlled and carried out.

Die Erfindung wird im folgenden anhand von zeichnerisch dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

  • Fig. 1 eine schematische Ansicht einer ersten Ausfüh­rungsform einer Bandwechselvorrichtung mit zwei Abwickelstationen und einem zentralen Band­wechsler,
  • Fig. 2 in schematischer Ansicht eine zweite Ausfüh­rungsform der Bandwechselvorrichtung, ähnlich zu Figur 1, mit einer gegenüber der ersten Aus­führungsform abgewandelten Abrollung der Band­wickel, und
  • Fig. 3 eine dritte Ausführungsform der Bandwechselvor­richtung in schematischer Ansicht, bei der die Abwickelstationen an einer Seite des Band­wechslers angeordnet sind.
The invention is explained in more detail below with reference to exemplary embodiments illustrated in the drawings. Show it:
  • Fig. 1 is a schematic view of a first embodiment of a tape changing device with two Unwinding stations and a central belt changer,
  • 2 shows a schematic view of a second embodiment of the tape changing device, similar to FIG. 1, with a unwinding of the tape reel modified compared to the first embodiment, and
  • Fig. 3 shows a third embodiment of the tape changing device in a schematic view, in which the unwinding stations are arranged on one side of the tape changer.

Eine in Figur 1 schematisch dargestellte Bandwechsel­vorrichtung 1 umfaßt einen zentral angeordneten Band­wechsler 2, an dessen linker und rechter Seite je eine Abwickelstation 3 bzw. 4 angeordnet ist. Der Band­wechsler 2 steht senkrecht, und ein neues Band 5 und ein ablaufendes Band 6 werden von Bandwickeln 7 und 8 in den Abwickelstationen 3 und 4 dem Bandwechsler 2 zu­geführt. Die Bandwickel 7 und 8 sind motorisch angetrie­ben, und die Bänder 5 und 6 werden von den Bandwickeln 7 und 8 nach oben um Umlenkwalzen 38, 39 herumgeführt und durchlaufen horizontal Kammern 32, 33, in denen die Oberfläche des jeweils ablaufenden Bandes 5 oder 6 bei­spielsweise mittels Dampf oder Druckluft entfettet wird. In Fig. 1 läuft das Band 5 im Gegenuhrzeigersinn von dem Bandwickel 7 ab, jedoch kann es ebenso im Uhr­ziegersinn ablaufen, wie es strichpunktiert in der Fig. 1 angedeutet ist.A tape changing device 1 shown schematically in FIG. 1 comprises a centrally arranged tape changer 2, on the left and right side of which an unwinding station 3 or 4 is arranged. The tape changer 2 is vertical, and a new tape 5 and a running tape 6 are fed from tape reels 7 and 8 in the unwinding stations 3 and 4 to the tape changer 2. The band windings 7 and 8 are driven by a motor, and the bands 5 and 6 are guided upwards by the band windings 7 and 8 around deflection rollers 38, 39 and pass horizontally through chambers 32, 33, in which the surface of the respective running band 5 or 6, for example is degreased using steam or compressed air. In Fig. 1, the tape 5 runs counterclockwise from the tape roll 7, but it can also run clockwise, as is indicated by dash-dotted lines in Fig. 1.

Der Bandwechsler 2 umfaßt zwei Ständer 12 und 13, in deren oberen Abschnitten sich je eine Andruckwalzenein­heit 10 bzw. 11 befindet, die aus einer Andruckwalze 14 bzw. 16 und einer Gegendruckwalze 15 bzw. 17 besteht. An einem Querträger 18 des Bandwechslers 2 sind paar­weise Querschneider 19, 20 angeordnet, die beispiels­weise Rotationsquerschneider sind. Jeder der Querschnei­der 19, 20 umfaßt zwei Rollen 21, 22 bzw. 23, 24. An je­der dieser Rollen 21 bis 24 ist eine Schneidklinge 25 befestigt. Die Schneidklingen in Falle von Rotations­querschneidern 19, 20 bilden mit den Rollen 21, 22 bzw. 23, 24 Messerbalken, die beim Schnitt mittels pneuma­tisch angetriebener Drehkolben um 180° hin- oder zurück­gedreht werden. Anstelle von pneumatisch angetriebenen Drehkolben können auch elektrische Drehkolben oder ge­steuerte Elektromotoren, die sogenannte Direktantriebe bilden, eingesetzt werden, welche die Schneidklingen bei jedem Schnitt um 360° drehen, diese zusätzlich in den synchronen Kreislauf bringen und nach dem Schnitt in der Ausgangsstellung wieder stehen lassen. Mit den Rota­tionsquerschneidern 19, 20 ist in kürzester Zeit - prak­tisch im Augenblick - das jeweilige Band 5, 6 durch­schnitten. Eine Bandwechselvorrichtung 1 mit Querschnei­dern als Trennsysteme für die Bänder, mit denen ein Bandwechsel durchgeführt wird, ist insbesondere bei ho­hen Bandgeschwindigkeiten von mehr als 50 m/min bestens geeignet. Dabei werden die Bänder rechtwinklig bzw. na­hezu rechtwinklig und sauber durchschnitten.The belt changer 2 comprises two stands 12 and 13, in the upper sections of which there is a pressure roller unit 10 or 11, which consists of a pressure roller 14 or 16 and a counter pressure roller 15 or 17. Cross cutters 19, 20, which are, for example, rotary cross cutters, are arranged in pairs on a cross member 18 of the belt changer 2. Each of the cross cutters 19, 20 comprises two rollers 21, 22 and 23, 24, respectively. A cutting blade 25 is attached to each of these rollers 21 to 24. The cutting blades in the case of rotary cross cutters 19, 20 form with the rollers 21, 22 and 23, 24 cutter bars which are rotated back and forth by 180 ° during the cutting by means of pneumatically driven rotary pistons. Instead of pneumatically driven rotary lobes, electric rotary lobes or controlled electric motors, which form so-called direct drives, can be used, which rotate the cutting blades by 360 ° with each cut, additionally bring them into synchronous circulation and leave them in the starting position after the cut. With the rotary cross-cutters 19, 20, the respective band 5, 6 is cut through in the shortest possible time - practically at the moment. A tape changing device 1 with cross cutters as separation systems for the tapes with which a tape change is carried out is particularly suitable at high tape speeds of more than 50 m / min. The strips are cut right-angled or almost right-angled and clean.

Die Querschneider können auch Gleichlaufquerschneider sein, die mit einer Schnittgeschwindigkeit gleich der Bandlaufgeschwindigkeit kontinuierlich umlaufen Die zu­sammenwirkenden Rollen eines einzelnen Querschneiders 19 bzw. 20 sind über Zahnräder miteinander gekuppelt. Vie nicht gezeigten Drehkolbenzylinder, die an beiden Enden oder nur an einem Ende jeder der Rollen angreifen und diese antreiben, stellen die Querschneider nach jedem Schnitt in ihre Ausgangspositionen zurück.The cross cutters can also be synchronous cross cutters with a cutting speed equal to that Continuously rotating belt running speed The interacting rollers of a single cross cutter 19 or 20 are coupled to one another via gear wheels. Many rotary piston cylinders, not shown, which act on both ends or only on one end of each of the rollers and drive them, return the cross cutters to their starting positions after each cut.

Eine weitere Ausführungsform des Querschneiders besteht aus einem feststehenden Balkenmesser und einem Rotations­querschneider. Ebenso ist eine Ausführungsform geeignet, die aus einem feststehenden und einem dazu beweglichen Balkenmesser aufgebaut ist.Another embodiment of the cross cutter consists of a fixed bar knife and a rotary cross cutter. An embodiment is also suitable, which is constructed from a fixed and a movable bar knife.

Die Bänder 5 und 6 werden innerhalb des Bandwechslers 2 in V-förmig zusammenlaufenden Kanälen 26, 27 geführt. Innerhalb dieser Kanäle 26, 27 befinden sich nahe dem unteren Ende der Kanäle Drehanschläge 28, 29, die in die Bewegungsbahn der Bänder 5, 6 einschwenkbar sind.The tapes 5 and 6 are guided within the tape changer 2 in channels 26, 27 converging in a V-shape. Within these channels 26, 27 there are rotary stops 28, 29 near the lower end of the channels, which can be pivoted into the path of movement of the belts 5, 6.

Die Bänder 5 und 6 laufen in den Kanälen 26, 27 V-för­mig von oben nach unten und werden in einer Anpreßwal­zeneinheit 9 zusammengeführt, in der das ablaufende und das neue Band zusammengefügt werden. Die Anpreßwalzen­einheit 9 besteht aus einer Antriebswalze 30 und einer pneumatisch betätigten Anpreßwalze 31. Die Antriebswal­ze 30 arbeitet als Hauptbremswalze, und es herrscht ein sehr hoher Liniendruck zwischen der Antriebswalze 30 und der Anpreßwalze 31. Die Anpreßwalze 31 befindet sich bereits in Arbeitsstellung, bevor der aktive Band­wechselvorgang anläuft.The belts 5 and 6 run in the channels 26, 27 in a V-shape from top to bottom and are brought together in a pressure roller unit 9, in which the outgoing and the new belt are joined. The pressure roller unit 9 consists of a drive roller 30 and a pneumatically operated pressure roller 31. The drive roller 30 works as the main brake roller, and there is a very high line pressure between the drive roller 30 and the pressure roller 31. The pressure roller 31 is already in the working position before the active one Belt change process starts.

Zur Herstellung einer Klebeverbindung zwischen dem ab­laufenden Band 6 und dem neuen Band 5 wird ein doppel­seitig klebender Streifen am Bandanfang des freuen Ban­des 5 aufgeklebt. Der so präparierte Bandanfang wird bei abgehobener Andruckwalze 14 in der Andruckwalzen­einheit 10 bis zum Anliegen an den in die Bewegungsbahn eingeschwenkten Drehanschlag 28 im Kanal 26 vorgefah­ren bzw. vorgeschoben.To produce an adhesive bond between the running tape 6 and the new tape 5, a double-sided adhesive strip is glued to the tape beginning of the happy tape 5. The tape start prepared in this way is advanced or advanced in the pressure roller unit 10 when the pressure roller 14 is raised until it abuts the rotary stop 28 in the channel 26 which is pivoted into the movement path.

Die Andruckwalzen 14 und 16 der Andruckwalzeneinheiten 10, 11 sind jeweils mit einer Rücklaufsperre ausgestat­tet und haben auf der Antriebsseite eine Überholkupp­lung. Die Andruckwalzen 14, 16 werden nach Bedarf abge­senkt, beispielsweise bei Einleitung eines Bandwechsels wird nur die Andruckwalze 14 abgesenkt und anschließend angetrieben. Zum gleichen Zeitpunkt kann der Bandwickel 7 beschleunigt werden. Sobald die Bänder 5, 6 in der Anpreßwalzeneinheit 9 zusammengefügt sind, läuft das neue Band 5 mit der gleichen Arbeitsgeschwindigkeit wie das ablaufende Band 6, das zuvor durchschnitten wurde. Während der Beschleunigungsphase der Bänder werden die Andruckwalzen 14 und 16 bezüglich ihrer Umlaufgeschwin­digkeit mit der Bandgeschwindigkeit synchronisiert. Nach erfolgtem Bandwechsel werden die Andruckwalzen 14, 16 von den Gegendruckwalzen 15 und 17 abgehoben.The pressure rollers 14 and 16 of the pressure roller units 10, 11 are each equipped with a backstop and have an overrunning clutch on the drive side. The pressure rollers 14, 16 are lowered as required, for example when a tape change is initiated, only the pressure roller 14 is lowered and then driven. At the same time, the tape winding 7 can be accelerated. As soon as the belts 5, 6 are assembled in the pressure roller unit 9, the new belt 5 runs at the same working speed as the running belt 6, which was previously cut. During the acceleration phase of the belts, the pressure rollers 14 and 16 are synchronized with the belt speed with regard to their rotational speed. After the belt has been changed, the pressure rollers 14, 16 are lifted off the counter pressure rollers 15 and 17.

Wie aus Fig. 1 ersichtlich ist, ist der Drehanschlag 29 im Kanal 27 aus der Bewegungsbahn des ablaufenden Ban­des 6 herausgeschwenkt, das zwischen der Antriebswalze 30 und der Anpreßwalze 31 hindurchgeführt ist. Die An­ fangskante des neuen Bandes 5 liegt gegen den in die Bewegungsbahn eingeschwenkten Drehanschlag 28 im Kanal 26 an. Der auf den Anfangsabschnitt des neuen Bandes 5 aufgebrachte Klebestreifen 40 ist in Figur 1 vergrößert angedeutet und endet etwa 1 bis 2 cm vor der Vorderkan­te des Bandes 5. Die Andruckwalze 14 ist in dieser Hal­testellung des neuen Bandes 5 auf die Gegendruckwalze 15 der Andruckwalzeneinheit 10 angedrückt. Zu einem be­stimmten Zeitpunkt erfolgt das Durchtrennen bzw. Durch­schneiden des Bandes 6, das von dem Bandwinkel 8 ab­läuft. Zugleich wird der Drehanschlag 28 aus der Bewe­gungsbahn im Kanal 26 herausgeschwenkt, und der Anfang des Bandes 5 mit dem Klebestreifen 40 wird durch die angetriebene Andruckwalze 14 in die Andruckzone der An­preßwalzeneinheit 9 vorgefahren. In dem Spalt zwischen der Antriebswalze 30 und der Anpreßwalze 31 erfolgt das Andrücken des Bandanfangs des neuen Bandes 5 auf das ablaufende Band 6. Das Band 5 wird zwischen der An­triebs- bzw. Hauptbremswalze 30 und der Anpreßwalze 31 eingefahren, wo ein sehr hoher Liniendruck herrscht, der eine feste Klebeverbindung zwischen dem Klebestrei­fen 40 des neuen Bandes 5 und dem ablaufenden Band 6 bewirkt. Der Trennschnitt am ablaurenden Band 6 erfolgt abgestimmt auf die Bandgeschwindigkeit des ablaufenden Bandes 6 und auf die Einlaufgeschwindigkeit des neuen Bandes 5 derart, daß das ablaufende Band 6 den Klebe­streifen 40 voll überdeckt und kurz danach mit einer freien Überlappung des Klebestreifens endet, wobei die Überlappung in der Größenordnung von 100 bis 250 mm liegt. Da der Schnitt quer zum Band 6 rechtwinklig oder nahezu rechtwinklig durch den Rotationsquerschneider 20 erfolgt, entsteht eine sehr saubere, nicht ausgezackte Klebeverbindung zwischen dem neuen Band 5 und dem ablau­fenden Band 6.As can be seen from FIG. 1, the rotary stop 29 in the channel 27 is pivoted out of the movement path of the running belt 6, which is passed between the drive roller 30 and the pressure roller 31. The An The leading edge of the new band 5 lies against the rotary stop 28 pivoted into the movement path in the channel 26. The adhesive strip 40 applied to the initial section of the new tape 5 is indicated enlarged in FIG. 1 and ends approximately 1 to 2 cm in front of the front edge of the tape 5. The pressure roller 14 is pressed onto the counter-pressure roller 15 of the pressure roller unit 10 in this holding position of the new tape 5 . At a certain point in time the band 6, which runs off the band angle 8, is cut or cut. At the same time, the rotary stop 28 is pivoted out of the movement path in the channel 26, and the beginning of the tape 5 with the adhesive strip 40 is advanced by the driven pressure roller 14 into the pressure zone of the pressure roller unit 9. In the gap between the drive roller 30 and the pressure roller 31, the beginning of the belt 5 is pressed onto the running belt 6. The belt 5 is inserted between the drive or main brake roller 30 and the pressure roller 31, where there is a very high line pressure , which causes a firm adhesive connection between the adhesive strip 40 of the new tape 5 and the running tape 6. The separating cut on the ablaurender tape 6 is made to match the tape speed of the tape 6 and the running speed of the new tape 5 such that the tape 6 completely covers the adhesive tape 40 and shortly thereafter ends with a free overlap of the adhesive tape, the overlap in is of the order of 100 to 250 mm. Since the cut perpendicular to the band 6 or takes place almost at right angles through the rotary cross cutter 20, a very clean, not serrated adhesive connection is created between the new band 5 and the running band 6.

Die in Figur 1 dargestellte Bandwechselvorrichtung 1 ist insbesonders für hohe und sehr hohe Bandgeschwin­digkeiten im Bereich von 50 m/min und höher geeignet.The belt changing device 1 shown in FIG. 1 is particularly suitable for high and very high belt speeds in the range of 50 m / min and higher.

Die gezeigte Anordnung der Abwickelstationen 3 und 4 symmetrisch zu dem Bandwechsel 2 ist in bezug auf die Bandführung und die Bedienung der Bandwechselvorrich­tung 1 vor Ort sehr günstig. Die Abwickelstationen 3 und 4 sind beispielsweise mit einem einseitig freiste­henden Spanndorn ausgerüstet, der den jeweiligen Band­wickel 7 bzw. 8 aufnimmt, der mit einen speziellen Hub­wagen auf den Spanndorn geschoben werden kann. Ober­halb der Bandwickel 7 und 8 befindet sich üblicherweise eine nicht gezeigte Arbeitsbühne. Zwischen der Umlenk­walze 38 und der Andruckwalzeneinheit 10 im Bereich des neuen Bandes 5 ist ein nicht gezeigter Arbeitstisch vorhanden, auf dem der Klebestreifen 40 von Hand oder automatisch von einem Klebestreifenspender auf den An­fangsabschnitt des neuen Bandes 5 aufgebracht werden kann. Anstelle eines Klebestreifens kann auch eine Kle­beschicht manuell oder mit Hilfe eines Klebespenders auf den Bandanfang des neuen Bandes 5 aufgebracht wer­den. Bei den Bändern 5 und 6 handelt es sich vor allem um Aluminiumbänder, die die Grundlage für die Herstel­lung von Druckplatten bilden, jedoch ist die Band­ wechselvorrichtung ebenso für Bänder aus anderen Metal­len, Kunststoff, Papier oder dergleichen Materialien geeignet. Nach Einführung des vorbereiteten Bandanfangs in die Bandwechselvorrichtung 1 bis zum Anliegen der Anfangskante an den Drehanschlag 28 kann zu jedem ge­wünschten Zeitpunkt der Bandwechsel ausgelöst werden, wie dies voranstehend beschrieben ist.The arrangement of the unwinding stations 3 and 4 shown symmetrical to the tape change 2 is very favorable in relation to the tape guide and the operation of the tape change device 1 on site. The unwinding stations 3 and 4 are equipped, for example, with a one-sided, free-standing mandrel that receives the respective band windings 7 and 8, which can be pushed onto the mandrel with a special lifting carriage. A work platform, not shown, is usually located above the tape rolls 7 and 8. Between the deflecting roller 38 and the pressure roller unit 10 in the area of the new tape 5 there is a work table, not shown, on which the adhesive tape 40 can be applied to the start section of the new tape 5 by hand or automatically by an adhesive tape dispenser. Instead of an adhesive strip, an adhesive layer can also be applied to the start of the new tape 5 manually or with the aid of an adhesive dispenser. The tapes 5 and 6 are primarily aluminum tapes that form the basis for the production of printing plates, but the tape is Change device also suitable for tapes made of other metals, plastic, paper or similar materials. After the prepared tape start has been introduced into the tape changing device 1 until the initial edge abuts the rotary stop 28, the tape change can be triggered at any desired time, as described above.

In Figur 2 ist schematisch eine Bandwechselvorrichtung 1 dargestellt, die ähnlich zu der Ausführungsform nach der Fig. 1 aufgebaut ist und aus einem Bandwechsler 2 und symmetrisch zu diesem links und rechts davon ange­ordneten Abwickelstationen 36 und 37 besteht, bei denen es sich um Standard-Abwickelstationen mit beidseitiger Aufhängung der Bandwickel handelt. Dies bedeutet, daß im Gegensatz zu der Ausführungsform nach Fig. 1 keine Spanndorn-Abwickelstationen eingesetzt werden. Die übrigen Bauteile dieser Ausführungsform der Bandwechsel­vorrichtung 1 entsprechen weitgehend der Ausführungs­forn nach Fig. 1, so daß sie nicht nochmals beschrieben werden.FIG. 2 schematically shows a tape changing device 1, which is constructed similarly to the embodiment according to FIG. 1 and consists of a tape changer 2 and symmetrical to this unwinding stations 36 and 37 which are arranged to the left and right thereof and which are standard unwinding stations deals with double-sided suspension of the tape wrap. This means that, in contrast to the embodiment according to FIG. 1, no mandrel unwinding stations are used. The remaining components of this embodiment of the tape changing device 1 largely correspond to the embodiment according to FIG. 1, so that they are not described again.

Fig. 3 zeigt schematisch eine weitere Ausführungsform der Bandwechselvorrichtung 1, bei der die beiden Ab­wickelstationen 34 und 35 einseitig zum Bandwechsler 2 angeordnet sind. Dies bedeutet, daß sich die beiden Abwickelstationen 34, 35, die beispielsweise mit Spann­dornen versehen sind, an der einen Seite des Bandwechs­lers sich befinden und diesen nicht symmetrisch flan­kieren. Die Abwickelstation 35 mit dem ablaufenden Band 6 ist nächst dem Bandwechsler 2 angeordnet. Das von dem Bandwickel der Abwickelstation 35 abgezogene Band 6 wird schräg nach oben über zwei Umlenkwalzen 43 und 44 geführt und gelangt nach der Umlenkwalze 44 in die An­druckwalzeneinheit 10 und von dieser zwischen dem Rota­tionsquerschneider 19 hindurch in die Anpreßwalzenein­heit 9. Die Abwickelstation 34 für das neue Band 5 ist weiter entfernt von dem Bandwechsler 2 angeordnet. Das abzuwickelnde neue Band 5 wird schräg nach unten ge­führt und über Umlenkwalzen 41 und 42 horizontal weiter­transportiert. Nach der Umlenkwalze 42 wird das Band 5 nach oben über die Umlenkwalze 39 horizontal in die An­druckwalzeneinheit 11 geführt und nach dieser zwischen dem Rotationsquerschneider 20 hindurch nach unten in die Anpreßwalzeneinheit 9 gelenkt, in der in derselben Weise, wie sie anhand von der Ausführungsform nach Fig. 1 beschrieben ist, das neue Band 5 und das ablaufende Band 6 zusammengefügt werden.3 schematically shows a further embodiment of the tape changing device 1, in which the two unwinding stations 34 and 35 are arranged on one side of the tape changer 2. This means that the two unwinding stations 34, 35, which are provided with mandrels, for example, are located on one side of the belt changer and do not flank them symmetrically. The unwinding station 35 with the running tape 6 is arranged next to the tape changer 2. The tape 6 drawn off the tape roll of the unwinding station 35 is guided obliquely upwards over two deflecting rollers 43 and 44 and arrives after the deflecting roller 44 into the pressure roller unit 10 and from there between the rotary cross cutter 19 into the pressure roller unit 9. The unwinding station 34 for the new one Band 5 is located further away from the band changer 2. The new tape 5 to be unwound is guided obliquely downward and transported horizontally via deflecting rollers 41 and 42. After the deflecting roller 42, the belt 5 is guided upwards over the deflecting roller 39 horizontally into the pressure roller unit 11 and then guided downwards between the rotary cross cutter 20 and into the pressure roller unit 9 in the same manner as it is based on the embodiment according to FIG 1, the new band 5 and the running band 6 are joined together.

Die Erprobung der Bandwechselvorrichtung 1, wie sie in Fig. 3 gezeigt ist, erfolgte beispielsweise unter fol­genden Bedingungen:
Bandgeschwindigkeit v = 20 m/min
Bandbreite der beiden Bänder 5 und 6: 1100 mm
Banddicke: 0,28 mm
sowie
Bandgeschwindigkeit v = 55 m/min
Bandbreite der Bänder 5 und 6: 905 mm
Banddicke: 0,28 mm.The tape changing device 1, as shown in FIG. 3, was tested, for example, under the following conditions:
Belt speed v = 20 m / min
Band width of the two bands 5 and 6: 1100 mm
Band thickness: 0.28 mm
such as
Belt speed v = 55 m / min
Band width of bands 5 and 6: 905 mm
Band thickness: 0.28 mm.

Der Zeitpunkt für das Durchschneiden des ablaufenden Bandes 6 gegenüber dem Einschaltzeitpunkt für den An­trieb der oberen Andruckwalze 14 der Andruckwalzenein­heit 10 für das neue, d.h. abzuwickelnde Band 5 wurde um etwa 3 Sekunden vorverlegt. Der Bandwechsel lief be­züglich der zeitlichen Abstimmung exakt ab, und das rechtwinklig abgeschnittene Bandende des ablaufenden Bandes 6 überdeckte die Klebestelle um etwa 250 mm bei der Bandgeschwindigkeit v = 20 m/min und um etwa 100 mm bei der Bandgeschwindigkeit v = 55 m/min, wobei im letzteren Fall der Einschaltzeitpunkt für den Antrieb der oberen Andruckwalze 14 der Andruckwalzeneinheit 10 um etwa 1,4 Sekunden gegenüber dem Abschneiden des ab­laufenden Bandes 6 vorverlegt wurde. Die Klebeverbin­dungen waren in beiden Fällen glatt angedrückt und fest und hatten eine Länge bis zu 600 mm.The time for cutting through the running belt 6 compared to the switch-on time for driving the upper pressure roller 14 of the pressure roller unit 10 for the new, i.e. tape 5 to be unwound was brought forward by about 3 seconds. The tape change was carried out exactly in terms of timing, and the right-angled tape end of the running tape 6 covered the adhesive point by about 250 mm at the tape speed v = 20 m / min and by about 100 mm at the tape speed v = 55 m / min, in the latter case the switch-on time for driving the upper pressure roller 14 of the pressure roller unit 10 has been brought forward by approximately 1.4 seconds compared to the cutting off of the running tape 6. In both cases, the adhesive connections were pressed on smoothly and firmly and had a length of up to 600 mm.

Die Bedienungsfunktionen der Bandwechselvorrichtung 1 sind zweckmäßigerweise für die Einmannbedienung in einem Tastenfeld zusammengefaßt, so daß die Auslösung des Bandwechsels von einer Stelle aus erfolgen kann.The operating functions of the tape changing device 1 are advantageously combined for one-man operation in a keypad, so that the tape change can be triggered from one point.

In den voranstehenden Zeichnungen der Figuren 1 bis 3 ist jeweils der ursprüngliche Durchmesser des Band­wickels des ablaufenden Bandes 6 strichpunktiert darge­stellt.In the preceding drawings of Figures 1 to 3, the original diameter of the tape roll of the running tape 6 is shown in dash-dotted lines.

Claims (18)

1. Bandwechselvorrichtung für den fliegenden Band­wechsel von einem ablaufenden Band zu einem neuen Band, von denen jedes in einer in-line Bandanlage mehrere Bearbeitungsschritte durchläuft, mit je einer Abwickel­station für das ablaufende und das neue Band, dadurch gekennzeichnet, daß die Bandwechselvorrichtung (1) ne­ben den Abwickelstationen (3, 4; 34, 35; 36, 37) einen Bandwechsler (2) als Zentralteil umfaßt, daß die Ab­wickelstationen (3, 4) voneinander getrennt aufgestellt sind, und daß das neue und das ablaufende Band (5 bzw. 6) von Bandwickeln (7, 8) in den Abwickelstationen dem Bandwechsler (2) zugeführt und in diesem V-förmig von oben nach unten in einer Anpreßwalzeneinheit (9) zusam­mengeführt sind, in der das ablaufende und das neue Band zusammenfügbar sind.1. Belt changing device for the flying belt change from a running belt to a new belt, each of which goes through several processing steps in an in-line belt system, each with an unwinding station for the running and the new belt, characterized in that the belt changing device (1) In addition to the unwinding stations (3, 4; 34, 35; 36, 37), a belt changer (2) as the central part comprises that the unwinding stations (3, 4) are set up separately from one another and that the new and the outgoing belt (5 or 6) of tape reels (7, 8) in the unwinding stations, the tape changer (2) and in this V-shaped from top to bottom are brought together in a pressure roller unit (9) in which the running and the new tape can be joined. 2. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß sie symmetrisch in der Weise auf­gebaut ist, daß die Abwickelstationen (3, 4) links und rechts von dem zentralen Bandwechsler (2) angeordnet sind.2. Tape changing device according to claim 1, characterized in that it is constructed symmetrically in such a way that the unwinding stations (3, 4) to the left and right of the central tape changer (2) are arranged. 3. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Bandwechsler (2) zwei Andruck­walzeneinheiten (10, 11) umfaßt, die in den oberen Ab­schnitten zweier Ständer (12, 13) des Bandwechslers an­geordnet sind und jeweils aus einer oberen, angetriebe­ nen Andruckwalze (14; 16) und einer unteren Gegendruck­walze (15; 17) bestehen, zwischen denen das neue bzw. das ablaufende Band hindurchgeführt ist.3. Belt changing device according to claim 1, characterized in that the belt changer (2) comprises two pressure roller units (10, 11) which are arranged in the upper sections of two stands (12, 13) of the belt changer and each of an upper, driven NEN pressure roller (14; 16) and a lower counter-pressure roller (15; 17), between which the new or the running tape is passed. 4. Bandwechselvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß jede der Andruckwalzen (14, 16) mit einer Rücklaufsperre ausgestattet ist.4. Belt changing device according to claim 3, characterized in that each of the pressure rollers (14, 16) is equipped with a backstop. 5. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß an einem Querträger (18) des Band­wechslers (2) je ein Querschneider (19; 20) angeordnet ist.5. Belt changing device according to claim 1, characterized in that a cross cutter (19; 20) is arranged on a cross member (18) of the belt changer (2). 6. Bandwechselvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Querschneider Rotationsquer­schneider sind und daß jeder Querschneider aus zwei an­getriebenen, um 180° drehbaren Rollen (21, 22 bzw. 23, 24) besteht, von denen jede eine Schneidklinge (25) aufweist und daß das neue Band (5) zwischen den Rollen (21, 22) des einen Querschneiders (19) und das ablau­fende Band (6) zwischen den Rollen (23, 24) des ande­ren Querschneiders (20) hindurchgeführt ist.6. Belt changing device according to claim 5, characterized in that the cross cutters are rotary cross cutters and that each cross cutter consists of two driven, 180 ° rotatable rollers (21, 22 and 23, 24), each of which has a cutting blade (25) and that the new belt (5) between the rollers (21, 22) of one cross cutter (19) and the outgoing belt (6) between the rollers (23, 24) of the other cross cutter (20) is passed. 7. Bandwechselvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Querschneider Gleichlaufquer­schneider sind.7. Belt changing device according to claim 5, characterized in that the cross cutters are synchronous cross cutters. 8. Bandwechselvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die zusammenwirkenden Rollen eines einzelnen Querschneiders (19; 20) über Zahnräder mit­ einander gekuppelt sind und daß Drehkolbenzylinder die Rollen (19) der Querschneider antreiben und nach dem Schnitt wieder in die Ausgangsposition zurückstellen.8. Belt changing device according to claim 5, characterized in that the cooperating rollers of a single cross cutter (19; 20) via gears are coupled to each other and that rotary piston cylinders drive the rollers (19) of the cross cutters and return to the starting position after the cut. 9. Bandwechselvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der einzelne Querschneider aus ei­nem feststehenden Balkenmesser und einem Rotationsquer­schneider besteht.9. belt changing device according to claim 5, characterized in that the individual cross cutter consists of a fixed bar knife and a rotary cross cutter. 10. Bandwechselvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß der einzelne Querschneider aus ei­nem feststehenden und einem beweglichen Balkenmesser besteht.10. Belt changing device according to claim 5, characterized in that the individual cross cutter consists of a fixed and a movable bar knife. 11. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Bandwechsler (2) zwei V-förmig zusammenlaufende Kanäle (26, 27) umfaßt, in denen die Bänder (5, 6) durch die Andruckwalzeneinheiten (10, 11) hindurch bis in die Anpreßwalzeneinheit (9) geführt sind.11. Belt changing device according to claim 1, characterized in that the belt changer (2) comprises two V-shaped converging channels (26, 27), in which the belts (5, 6) through the pressure roller units (10, 11) through into Pressure roller unit (9) are guided. 12. Bandwechselvorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß in jedem Kanal (26, 27) ein Dreh­anschlag (28, 29) vorhanden ist, geben den das freie Ende des entsprechenden Bandes im Kanal anliegt, sobald der Drehanschlag in den Kanal eingeschwenkt ist.12. A band changing device according to claim 8, characterized in that in each channel (26, 27) there is a rotary stop (28, 29), which gives the free end of the corresponding band in the channel as soon as the rotary stop is pivoted into the channel. 13. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Anpreßwalzeneinheit (9) aus einer Antriebswalze (30) und einer Anpreßwalze (31) besteht, die pneumatisch gegen die Antriebswalze (30) andrückbar ist.13. Belt changing device according to claim 1, characterized in that the pressure roller unit (9) from a drive roller (30) and a pressure roller (31) exists, which can be pressed pneumatically against the drive roller (30). 14. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zu beiden Seiten des Bandwechslers (2) auf der Höhe der Andruckwalzeneinheiten (10, 11) Kammern (32, 33) angeordnet sind, durch welche die Bän­der (5, 6) hindurchlaufen, und daß in den Kammern die Oberflächen der Bänder mit Dampf, Druckluft oder der­gleichen gereinigt werden.14. Belt changing device according to claim 1, characterized in that on both sides of the belt changer (2) at the level of the pressure roller units (10, 11) chambers (32, 33) are arranged, through which the belts (5, 6) pass, and that the surfaces of the tapes are cleaned with steam, compressed air or the like in the chambers. 15. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Bänder (5, 6) aus Metall, ins­besondere Aluminium, oder Kunststoff bestehen und daß auf dem neuen Band (5) eine Klebeschicht über die Band­breite in einem Streifen von bis zu 600 mm Länge im Ab­stand von 1 bis 2 cm vom Bandanfang auf derjenigen Band­seite aufgebracht ist, die mit dem ablaufenden Band (6) in der Anpreßwalzeneinheit (9) in Preßkontakt gebracht wird.15. Tape changing device according to claim 1, characterized in that the tapes (5, 6) made of metal, in particular aluminum, or plastic and that on the new tape (5) an adhesive layer over the bandwidth in a strip of up to 600 mm in length is applied at a distance of 1 to 2 cm from the beginning of the belt on that side of the belt which is brought into press contact with the running belt (6) in the pressure roller unit (9). 16. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Abwickelstationen (34, 35) auf einer Seite des Bandwechslers (2) und in Band­laufrichtung vor dem Bandwechsler (2) angeordnet sind.16. Tape changing device according to claim 1, characterized in that the two unwinding stations (34, 35) on one side of the tape changer (2) and in the tape running direction are arranged in front of the tape changer (2). 17. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede der Abwickelstationen (3, 4; 34, 33) als Dornabwickelstation mit einem einseitig freistehenden Spanndorn ausgestattet ist, auf den der Bandwickel (7 bzw. 8) aufgeschoben ist.17. Tape changing device according to claim 1, characterized in that each of the unwinding stations (3, 4; 34, 33) is equipped as a mandrel unwinding station with a free-standing mandrel on which the tape reel (7 or 8) is pushed. 18. Bandwechselvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß in den Abwickelstationen (36, 37) eine beidseitige Aufhängung der Bandwickel (7, 8) vor­handen ist.18. Tape changing device according to claim 1, characterized in that in the unwinding stations (36, 37) a bilateral suspension of the tape reel (7, 8) is available.
EP19900121006 1989-11-09 1990-11-02 Device for changing a band Expired - Lifetime EP0427126B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90121006T ATE102892T1 (en) 1989-11-09 1990-11-02 TAPE CHANGER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3937286 1989-11-09
DE19893937286 DE3937286A1 (en) 1989-11-09 1989-11-09 TAPE CHANGE DEVICE

Publications (2)

Publication Number Publication Date
EP0427126A1 true EP0427126A1 (en) 1991-05-15
EP0427126B1 EP0427126B1 (en) 1994-03-16

Family

ID=6393175

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900121006 Expired - Lifetime EP0427126B1 (en) 1989-11-09 1990-11-02 Device for changing a band

Country Status (7)

Country Link
US (1) US5308007A (en)
EP (1) EP0427126B1 (en)
JP (1) JPH03177250A (en)
KR (1) KR100196230B1 (en)
AT (1) ATE102892T1 (en)
DE (2) DE3937286A1 (en)
ES (1) ES2050331T3 (en)

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US6111865A (en) * 1997-05-30 2000-08-29 Qualcomm Incorporated Dual channel slotted paging
US6832094B2 (en) 1997-05-30 2004-12-14 Qualcomm, Incorporated Dual event slotted paging
CN106698061A (en) * 2016-11-25 2017-05-24 深圳市赢合科技股份有限公司 Belt connecting device for winding machine
CN110615307A (en) * 2019-10-09 2019-12-27 威海光威精密机械有限公司 Automatic cloth connecting method and device for fiber fabric without stopping machine

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US6907721B2 (en) * 2002-12-19 2005-06-21 Invista North America, S.A.R.L. Spliced yarn and method for forming the same
US6889493B2 (en) * 2002-12-19 2005-05-10 Jp Morgan Chase Bank, N.A. Apparatus for forming a spliced yarn
ITFI20040108A1 (en) * 2004-05-07 2004-08-07 Perini Fabio Spa MULTIFORM UNWINDING DEVICE
JP5840047B2 (en) * 2012-03-26 2016-01-06 株式会社ジェイテクト Web winding device
KR101466172B1 (en) * 2013-05-30 2014-11-28 현대제철 주식회사 Changing device of belt
CN104418135B (en) * 2013-09-05 2016-10-05 上海烟草机械有限责任公司 The paper tape splicing apparatus of packer
CN108906514A (en) * 2018-08-13 2018-11-30 淮南胜奇新能源科技有限公司 A kind of uninterrupted feeding machanism of electrode film applicator

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US6111865A (en) * 1997-05-30 2000-08-29 Qualcomm Incorporated Dual channel slotted paging
US6393295B1 (en) 1997-05-30 2002-05-21 Qualcomm Incorporated Dual event slotted paging
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CN110615307A (en) * 2019-10-09 2019-12-27 威海光威精密机械有限公司 Automatic cloth connecting method and device for fiber fabric without stopping machine

Also Published As

Publication number Publication date
ATE102892T1 (en) 1994-04-15
DE59005006D1 (en) 1994-04-21
JPH03177250A (en) 1991-08-01
DE3937286A1 (en) 1991-05-16
ES2050331T3 (en) 1994-05-16
US5308007A (en) 1994-05-03
DE3937286C2 (en) 1993-04-08
KR100196230B1 (en) 1999-06-15
KR910009545A (en) 1991-06-28
EP0427126B1 (en) 1994-03-16

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