EP0475095A1 - Dispositif d'alignement d'une bande continue par rapport à une deuxième bande - Google Patents

Dispositif d'alignement d'une bande continue par rapport à une deuxième bande Download PDF

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Publication number
EP0475095A1
EP0475095A1 EP91113543A EP91113543A EP0475095A1 EP 0475095 A1 EP0475095 A1 EP 0475095A1 EP 91113543 A EP91113543 A EP 91113543A EP 91113543 A EP91113543 A EP 91113543A EP 0475095 A1 EP0475095 A1 EP 0475095A1
Authority
EP
European Patent Office
Prior art keywords
roller
web
toothed
correction
correction roller
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Withdrawn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
EP91113543A
Other languages
German (de)
English (en)
Inventor
W. Jeffrey Bechtel
Robert A.E. Griebel
Robert J. Lawler Iii
Robert J. Lawler Iv
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.)
Graphic Communications Inc
Original Assignee
Graphic Communications Inc
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 Graphic Communications Inc filed Critical Graphic Communications Inc
Publication of EP0475095A1 publication Critical patent/EP0475095A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/18—Registering sheets, blanks, or webs

Definitions

  • the present invention relates to a device for checking and aligning the length of a first continuous film web relative to a second web to which it is connected, in particular a second continuous film web in which pockets for receiving objects are preformed to form a finished package.
  • pre-printed material in a continuous film web is desirable for economic reasons; however, since the web is of continuous length and is only cut after gluing, there is a problem in adapting the actual period length to the design period length without interrupting the work process.
  • This problem is generally solved in that at least one web is made of stretchable material and the period length of this web is selected to be significantly shorter than the design period length.
  • the undersized period length on that fabric is increased until it matches the actual design period length required for the second web.
  • the present device in which the web to be bonded is guided over a toothed roller which introduces transverse folds into the tissue and thereby shortens in the longitudinal direction. These folds easily cause permanent adjustment, especially when the web is made of a certain material, such as aluminum foil.
  • the toothed roller has a plurality of circumferentially arranged and extending teeth and depressions which are located between these teeth and extend essentially over the entire width and which corresponds approximately to the width of the web.
  • the correction roller opposite to the toothed roller is driven by a motor at a higher speed than the conveying speed (overdriven).
  • the web material is accumulated in the recesses of the toothed roller and folds are formed in this material. Even though the material is deformed, it is more of a compression and accumulation of the material than a stretching operation. As a result, excess material is collected on a given path length as it is advanced behind the sprocket.
  • the amount of the web shortening due to the overdriven correction roller can be partially regulated by changing the contact pressure of the tooth roller on the opposite deformable elastic roller. In this way the depth of the folds and consequently the shortening of the web is changed.
  • this system can be used alone or preferably together with the known web stretching techniques described above. This allows better control of the reduction in tension that is required with slightly stretchable material.
  • the actual cut in Period length can be achieved without strongly pressing the web to be bonded, a much lower force is required to change the actual period length when combining the two systems. If both systems are combined, a lower tension is used to increase the length of the period, whereas the folding process is somewhat increased to shorten the length of the web.
  • the present device is constructed mechanically in such a way that it allows the use of both systems in an easily controllable and compatible manner.
  • a simple mechanical device allows the alternating use of either the tensioning or the folding function in a web processing station, which consists of special rollers and a trigger.
  • An electronic control device which is provided with sensors for detecting misalignments of the web, is used to indicate the drive speed or the braking of a correction roller in the web processing station.
  • the control device adjusts a trigger designed as a roller, which controls a mechanical displacement device, which in turn causes the tensioning or folding roller to bear more or less strongly on the correction roller.
  • Another object of the invention is to provide a web processing station which allows regulation of the period length at a very low tension in a continuously preformed and stretchable web.
  • Another object of the invention is to provide a mechanical system with folding and tensioning rollers which is controlled by a simple, economical and easily controllable release mechanism.
  • the present web processing station is arranged between a feed roller (2) and an adhesive roller (13) which meets the packaging (second) web (23).
  • the web processing station is shown schematically in this figure and consists of a roller adjustment mechanism which moves the web (1) against a speed-controlled correction roller (5).
  • a pre-printed or preformed adhesive web (1) is guided counterclockwise by a feed roller (2) over a toothed roller (7) and over the back of an elastic correction roller (5).
  • the web then leads between guide rollers (11 a) and (11 b) down to the adhesive roller (13), which brings the treated web (1) into contact with the packaging web (23).
  • the photo sensors (15a and 15b) are arranged opposite one another on the web to be glued and the packaging web (23) in order to detect any relative misalignment.
  • the sensors are electrically connected to a control device (29), which in turn is connected to a pressure regulator (19).
  • the roller trigger (21) is a pneumatic cylinder, which receives its air from the pressure regulator (19), which in turn is connected via a line (17) to an air supply according to the arrow in this figure.
  • the air pressure moves the piston (15), which rests on the rocker housing (9).
  • This rocker housing (9) carries both the tensioning roller (3) and the toothed roller (7), which are rotatably mounted.
  • the rocker housing (9) is pivotable about a shaft (10) which is fastened to the housing (6) and represents a displacement mechanism between positions as described below.
  • the correction roller (5) is rotatably fastened in the frame (6) and driven via a motor N, as shown in Figure 1.
  • the rocker housing (9) is forced in the clockwise direction by a spring (27).
  • a spring (27) As is immediately understandable for an average mechanic, when the air pressure behind the piston (15) increases, the toothed roller (7) comes out of contact with the correction roller (5). When the pressure increases further, the rocker housing (9) is moved further away, the tensioning roller (3) generates a clamping which defines the web (1) between itself and the driven correction roller (5). Because of these mechanical conditions, the movement of the rocker housing (9) allows the engagement of the toothed roller (7) or tensioning roller (3) to be set independently of one another in a selective manner.
  • the correction roller (5) has an elastic sleeve (8), which deform when the widthwise recesses of the toothed roller (7) are pressed, so that the web (1) is pressed into the recesses of the toothed roller in this way.
  • folds or kinks are created in the web, as shown by the cross-sectional representation of the treated web (1 a) in FIG. 2.
  • the folds have been exaggerated for clarity.
  • the pits are only about 0.015 inches deep, the correction roller is about 2.5 inches in diameter.
  • the number of pits per inch can range from 30 to 50 teeth using 0.003 inch thick aluminum foil.
  • Figure 3 is a top view of an apparatus shown from the side in Figure 2. In this figure the various structures can be seen more easily, which are held on a shaft between the frame end plates (6) and move therebetween.
  • the tensioning roller can also have teeth and depressions similar to the toothed roller. It has been found that using a toothed roller instead of a smooth surface roller to create tension increases web stretch for certain web materials. When the roller is pressed against the web with teeth in this arrangement and when tension is applied to either side of the clamp, the force in the indentations of the web is aimed at stretching rather than folding.
  • the correction roller (5) is driven or braked at an appropriate speed.
  • the correction roller speed is generated by a suitable drive; for example the motor (M) -brake B-clutch C combination, which is best known from web control, which is described in the manner of a diagram in FIG. 1.
  • the speed of the correction roller (5) can be changed by the strength of the electrical current to the clutch, which is indicated by an electronic control device, in order to generate the changing correction value in the desired manner.
  • a clamping between the tension roller (3) and the correction roller (5) is generated.
  • the tension on the web can be increased by braking the correction roller (5) in order to make its surface speed lower than that of the packaging web (23).
  • the level of braking and the resulting voltage is controlled by regulating the electrical current to the clutch, which is attached to the engine brake.
  • the movement of the packaging web, the adhesive web is drawn between the tensioning roller and the correction roller at a speed greater than the clamping allows to increase the tension on the intervening web. This creates an elongation of the web and an increase in the actual period length at the glue point.
  • the second position of the above-mentioned web processing device is when the correction roller (5) is in contact with the tooth roller (7) and at a distance from the tension roller (3).
  • the correction roller (5) is driven by means of a motor N with a linear surface speed which is greater than that of the adhesive web (23) (overdriven).
  • the excess material is collected and piled up in the recesses of the tooth roller as the web passes the tooth roller kink.
  • FIG. 2 in which the rollers are in this position, the indentations of the toothed roller cause the web to fold and kink in order in this way to shorten the length.
  • the rollers are preferably dimensioned so that both the toothed and tensioning rollers are in contact with the correction roller at the same time, but only a slight pressure between the elastic surface of the correction roller and each of the rollers prevails in both clamping points. With this arrangement, the web is never completely detached from both clamping points at the same time.
  • a minimum tension between the guide roller (12) and the tension rollers (11 and 11 b) is generated to control the displacement of the web in the width.
  • the correction roller is indicated by the control unit when the wheel is to be released or when it is to be driven at the working speed. In this case, the pre-printed period length remains unchanged.
  • the various units of the web processing device work together in such a way that when the speed of the correction roller (5) and the air pressure acting on the roller trigger (21) changes, the length of the web (1) is either stretched or shortened in order to align it with the packaging web ( 23) in the desired way.
  • the speed of the correction roller and the air pressure acting on the web processing station is determined by a control unit which is set via sensors (15a and 15b), as shown in FIG.
  • the sensors are addressed by means of web markings which are arranged equidistantly on both the adhesive and the packaging web.
  • the photo sensors are positioned so that the actual alignment takes place when both sensors are triggered by their corresponding markings at the same time.
  • the sensors are connected to an electronic control device (29) which has a circuit which determines the sequence in which the sensors respond and the interval between them. The response order determines the direction of the correction required, while the time interval indicates the amount.
  • These parameters are entered into a calculation method derived from experience, which changes the correction roller speed and the air pressure to produce the desired compensation.
  • These two variables set by the control device determined the shortening and lengthening of the web in order to bring it into the correct orientation for gluing.
  • the circuit of the control unit is shown diagrammatically and generalized in FIG.
  • Special circuits for achieving a programmable control unit with functional sequences according to the invention and explained here using a diagram are known. Therefore, the special circuits and electronic components can be selected from the large number of suitable components known to the electronics engineer.
  • the roller pressure trigger and the drive are actuated simultaneously as follows.
  • the air pressure acting on the roller trigger is increased until the pretensioned spring is overcome so far that the tension roller (3) comes into contact with the correction roller and the web in between is detected.
  • the motor brake is actuated, the electrical supply to the clutch of the correction roller is increased in order to slow down the speed of the adhesive web so that it moves forward by a certain amount slower than the speed of the packaging web.
  • tension of the web between the tension roller and the glue point is created by the pull of the forward movement of the packaging web.
  • the tension then increases the length of the web by stretching. In this way, markings and other special parts of the adhesive web on the packaging web are moved to a point behind that where they would come to rest without increased tension. This creates the necessary spatial delay that is necessary to compensate for the detected feed.
  • the control unit responds as follows:
  • the correction roller drive is shown that it is driven by a motor at a speed which is greater than the feed of the packaging sheet (overdriven) .
  • the motor runs at a constantly high speed and the clutch current is increased in order to achieve the desired degree of oversteer.
  • the air pressure acting on the roller release is reduced.
  • the spring on the rocker housing overcomes the air pressure and pushes the rocker housing until the tooth roller comes in close contact with the correction roller. This creates kinks and creases in the fabric which, as described in detail above, cause the web to be shortened.
  • the pre-printed areas of the web are thereby caused to coincide with areas on the packaging web that are in front of those where they would normally be placed. In this way, the detected delay is corrected.
  • the correction roller in the preferred embodiment is determined by a drive that is mechanically connected to both a clutch and a brake.
  • the speed of the correction roller is controlled by the electrical supply to the clutch and the brake, which ensure that the drive system either over-rotates or brakes the roller.
  • other suitable, variable speed drives can be used.
  • the preferred alignment control unit can be replaced by other deviation detection and control systems and by using other types of sensors from the prior art circuitry.
  • the specific configurations shown here are shown for the purpose of illustration and only as one way of carrying out the invention. There may be other modifications and changes obvious to one of ordinary skill in the art that fall within the scope of the present invention and which should only be limited by the following claims and their legal equivalents.
EP91113543A 1990-08-28 1991-08-13 Dispositif d'alignement d'une bande continue par rapport à une deuxième bande Withdrawn EP0475095A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US573709 1990-08-28
US07/573,709 US5094708A (en) 1990-08-28 1990-08-28 Registration system for a continuous web

Publications (1)

Publication Number Publication Date
EP0475095A1 true EP0475095A1 (fr) 1992-03-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113543A Withdrawn EP0475095A1 (fr) 1990-08-28 1991-08-13 Dispositif d'alignement d'une bande continue par rapport à une deuxième bande

Country Status (3)

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US (1) US5094708A (fr)
EP (1) EP0475095A1 (fr)
DE (1) DE4114255A1 (fr)

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US5647938A (en) * 1994-01-10 1997-07-15 Levine; Aaron Photo postcard apparatus and method
US5772834A (en) * 1994-11-03 1998-06-30 Gilles Leroux, S.A. Plastic substrate production production device
US5818719A (en) * 1995-12-29 1998-10-06 Kimberly-Clark, Worldwide, Inc. Apparatus for controlling the registration of two continuously moving layers of material
US5766389A (en) * 1995-12-29 1998-06-16 Kimberly-Clark Worldwide, Inc. Disposable absorbent article having a registered graphic and process for making
US6033502A (en) * 1996-11-13 2000-03-07 Kimberly-Clark Worldwide, Inc. Process and apparatus for registering continuously moving stretchable layers
US5932039A (en) * 1997-10-14 1999-08-03 Kimberly-Clark Wordwide, Inc. Process and apparatus for registering a continuously moving, treatable layer with another
US5964970A (en) * 1997-10-14 1999-10-12 Kimberly-Clark Worldwide, Inc. Registration process and apparatus for continuously moving elasticized layers having multiple components
WO1998021135A1 (fr) * 1996-11-13 1998-05-22 Kimberly-Clark Worldwide, Inc. Procede et appareil d'alignement pour couches elastifiees continuellement en mouvement, faites d'elements multiples
US5930139A (en) * 1996-11-13 1999-07-27 Kimberly-Clark Worldwide, Inc. Process and apparatus for registration control of material printed at machine product length
US6092002A (en) * 1996-11-13 2000-07-18 Kimberly-Clark Worldwide, Inc. Variable tension process and apparatus for continuously moving layers
US6444064B1 (en) 1997-12-19 2002-09-03 Procter & Gamble Company Registration system for phasing simultaneously advancing webs of material having variable pitch lengths
DE19804735B4 (de) * 1998-02-06 2006-06-29 Windmöller & Hölscher Kg Verfahren und Vorrichtung zum Ausrichten zweier zu einer mehrlagigen Bahn zusammengeführter Bahnen
DE19824798A1 (de) 1998-06-03 1999-12-09 Indag Gmbh & Co Betriebs Kg Vorrichtung und Verfahren zum Zuführen von Folien
DE19824797B4 (de) * 1998-06-03 2004-02-12 Indag Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Beutelherstellungsvorrichtung und Verfahren zum Herstellen von Folienbeutel
DE19825080B4 (de) 1998-06-04 2004-03-11 Indag Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Verfahren und Vorrichtung zur Herstellung von Folienbeuteln
DE19825065A1 (de) 1998-06-04 1999-12-16 Indag Gmbh & Co Betriebs Kg Vorrichtung und Verfahren zum Herstellen und Verpacken von Folienbeuteln
EP0994054B1 (fr) * 1998-10-14 2003-09-03 Fuji Photo Film Co., Ltd. Système de traitement d'une bande
US6652686B1 (en) 1999-02-08 2003-11-25 Kimberly-Clark Worldwide, Inc. Processes and apparatus for making disposable absorbent articles
US6986820B2 (en) * 2000-01-21 2006-01-17 Kimberly-Clark Worldwide, Inc. Processes and apparatus for making disposable absorbent articles
US6394676B1 (en) 2000-02-10 2002-05-28 Premark Feg L.L.C. Media sensor system for printer mechanism
US7123981B2 (en) 2002-08-07 2006-10-17 Kimberly-Clark Worldwide, Inc Autosetpoint registration control system and method associated with a web converting manufacturing process
US6845278B2 (en) 2002-08-07 2005-01-18 Kimberly-Clark Worldwide, Inc. Product attribute data mining in connection with a web converting manufacturing process
US6829516B2 (en) 2002-08-07 2004-12-07 Kimberly-Clark Worlwide, Inc. Combined information exchange systems and methods
US6904330B2 (en) * 2002-08-07 2005-06-07 Kimberly-Clark Worldwide, Inc. Manufacturing information and troubleshooting system and method
US6820022B2 (en) * 2002-08-07 2004-11-16 Kimberly-Clark Worldwide, Inc. System and method for identifying and exploiting quality information associated with a web converting manufacturing process
US7171283B2 (en) * 2002-08-07 2007-01-30 Kimberly-Clark Worldwide, Inc. Web guiding system and method
US7130709B2 (en) * 2002-08-07 2006-10-31 Kimberly-Clark Worldwide, Inc. Manufacturing information and alarming system and method
US7082347B2 (en) * 2002-08-07 2006-07-25 Kimberly-Clark Worldwide, Inc. Autosetpoint registration control system and method associated with a web converting manufacturing process
US6801828B2 (en) 2002-08-07 2004-10-05 Kimberly-Clark Worldwide, Inc. Web guiding system and method
US7130710B2 (en) 2002-08-07 2006-10-31 Kimberly-Clark Worldwide, Inc. System and method for tracking and exploiting per station information from a multiple repeat manufacturing device
US6957160B2 (en) 2003-12-09 2005-10-18 The Procter & Gamble Company Method and system for registering pre-produced webs with variable pitch length
GB0509645D0 (en) * 2005-05-12 2005-06-15 Tbs Eng Ltd An enveloper
US8157141B2 (en) * 2006-06-14 2012-04-17 Cryovac, Inc. System and method for detecting and registering serrated bags
CN106882631A (zh) * 2017-04-27 2017-06-23 南通南辉电子材料股份有限公司 一种超薄铝箔外观检测装置
CN111114910B (zh) * 2018-10-31 2021-09-21 中达电子(江苏)有限公司 泡罩机热封方法

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US3762125A (en) * 1971-03-17 1973-10-02 Morrell & Co John Film registration apparatus

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Also Published As

Publication number Publication date
US5094708A (en) 1992-03-10
DE4114255A1 (de) 1992-04-23

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