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
  • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
  • B65H29/006—Winding articles into rolls
• • 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
  • B65H2301/41—Winding, unwinding
  • B65H2301/419—Winding, unwinding from or to storage, i.e. the storage integrating winding or unwinding means
  • B65H2301/4192—Winding, unwinding from or to storage, i.e. the storage integrating winding or unwinding means for handling articles of limited length in shingled formation
  • B65H2301/41922—Winding, unwinding from or to storage, i.e. the storage integrating winding or unwinding means for handling articles of limited length in shingled formation and wound together with single belt like members
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/19—Specific article or web
  • B65H2701/1932—Signatures, folded printed matter, newspapers or parts thereof and books
• • 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
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/4981—Utilizing transitory attached element or associated separate material

Definitions

• the invention relates to a method and a device according to the preambles of the corresponding independent claims.
• the method and device are used to produce coils from a large number of flat objects, in particular printed products.
• Printed products are often wound up in coils for transport and intermediate storage in shingled formation.
• Such coils can also represent advantageous transport and / or storage formations for other flat, at least limitedly flexible objects, for example for textile objects.
• the mentioned windings have an essentially cylindrical winding core and at least one winding band, the winding band being wound in a tensioned state together with the flaky formation of the flat objects on the winding core and holding it together.
• the end of the winding tape can be closed around the finished winding or fixed in some other suitable way.
• the wrapping tape usually has a width that is significantly smaller than the width of the wound objects.
• Print products are mostly in Scale formation wound up; however, it is also conceivable to arrange them one behind the other, that is, not to wind them overlapping each other.
• Coils of this type that are common in the printing industry have diameters of up to over two meters and can weigh over a ton.
• the wound products are, for example, about 30 to 50 cm wide and scaled in such a way that the product distance is about 10 cm or less.
• Usual winding tapes are about 5 to 10 cm wide.
• Winding devices are used to produce the windings, the essential components of which are the following: means for holding a winding core (usually with a horizontal winding axis), means for feeding the scale formation of the flat objects to a winding point on the periphery of the winding core or an emerging winding , Means for the orderly supply of the tensioned winding tape to the winding point and a drive for a rotation of the winding core or the resulting winding with an essentially constant peripheral speed.
• Such winding devices are described, for example, in the publications EP-0243838 (or US-4775111) or EP-0281790 (or US-4898336).
• the means for feeding the scale formation have, for example, a pair of conveyor belts which lead essentially tangentially to the winding point (for example the area of the lower vertex of the winding core or the resulting winding) and on which the flaky formation of the objects is conveyed in a loosely lying manner.
• the winding tape is fed, for example, between the two feed conveyor belts in such a way that the scale formation between the winding tape and the resulting winding is guided into the winding point.
• the tensioned winding band takes over the radial pressing of the objects in the winding, if necessary, somewhat supported by a corresponding pressing force, for example exerted by the feed means, in the area of the winding point.
• either the feed means is pivoted accordingly or the axis of the winding core is shifted accordingly.
• the drive for winding engages, for example, on the winding core or on the periphery of the resulting winding in the area of the winding tape.
• the winding device In order to recreate the shingled formation from a winding, that is to say for unwinding, the winding device is operated essentially in the opposite direction to the winding process, the winding rotation being generated, for example, by actively pulling off the winding tape.
• the winding tape constricts in such a way that the products bend outwards around the tape at least in the outer layers of the resulting roll and the roll has a larger circumference in the area of its end faces than in the central area, where it is held together by the winding tape. If there are additional products that are thicker on one side than on the other side, there is an asymmetry in the constriction in such a way that the two end faces of the roll have different diameters.
• the phenomena mentioned can create problems by destabilizing the winding, by the objects in the winding being damaged or not being stable due to the deformation in a scale formation created from the winding and / or by the circumferential speed becoming difficult - Adapt the speed of a emerging or to be dismantled roll to the speed of feeding or leading away the scale formation.
• the problems mentioned are particularly known in the printing industry for the winding of relatively thick, twice-folded printed products, the second fold of which is aligned parallel to the winding axis in such a way that unfolded product edges (smaller thickness) on one end of the roll and on the other The first fold of the products, i.e. folded product edges (greater thickness), lie on top of one another on the end of the roll.
• Such products are, for example, double-folded newspapers or sections of newspapers.
• the object of the invention is to improve the method and device for producing coils from a large number of flat objects in such a way that the above-mentioned problems occur less, that is to say also relatively thick, relatively compressible and / or irregularly, in particular objects that are thick on one side can be wound into coils with better results, even if they are to be wound as a narrow scale formation, that is to say with small distances between adjacent objects.
• the flat objects in an emerging winding during the winding process are protected against the winding core not only by the tensioned winding band (central area) and their own rigidity (lateral areas) presses, but they are temporarily subjected to an additional pressing force.
• the additional pressing force acts locally during the winding process in a substantially stationary pressing area spaced from the winding point on the periphery of the winding being formed and has a component in the direction of the winding radius.
• the additional pressing force can be exerted, for example, over the entire winding width, but is advantageously limited to peripheral areas next to the winding tape up to the edge of the end faces of the winding.
• the pressing area is advantageously located behind the winding point in the winding direction in such a way that objects pressed by the additional pressing force soon reach the winding point and are covered by a further winding layer.
• a temporary pressing with an additional pressing force in the order of a few hundred Newtons is surprisingly effective.
• the additional pressing force is generated, for example, with the aid of a passively rotating press roller pressed against the periphery of the resulting roll, the axis of which is aligned parallel to the winding axis and which is arranged, for example, in the winding direction before the winding point and at a distance from it.
• windings wound with the additional pressing force according to the invention are wound more tightly and are therefore more stable. This can be seen, for example, from the fact that they flatten less when they are positioned on their periphery. It is also shown that windings wound in this way can be handled more easily and that products made from windings wound in this way are easier to handle and subsequent processing.
• the advantageous effect of the additional pressing force according to the invention which acts on the outermost winding layer during winding and also acts on layers located deeper in the winding, is probably an at least partially irreversible or at least not so the reversible pressing of the folded edges, in particular the second fold, and the same compression (squeezing of air) of the products, in such a way that the products of a next winding layer are less deformed when they are taken up in the winding, i.e. during the first pressing by the winding tape - than is the case without the additional pressing force.
• the additional pressing force of the method according to the invention is particularly advantageous for the production of windings, that is for winding operations. However, it can also be used for unwinding operations.
• FIG. 1 shows an exemplary embodiment of the device according to the invention for producing coils of flat objects with a viewing direction parallel to the winding axis;
• FIGS. 2 and 3 are schematic representations of two further exemplary embodiments of the device according to the invention, likewise looking in the direction parallel to the winding axis;
• Figures 4 and 5 show two exemplary embodiments of means for generating the additional pressing force (viewing direction perpendicular to the winding axis).
• FIG. 1 shows an exemplary embodiment of the device according to the invention, looking in the direction parallel to the winding axis A.
• It is an essentially known winding device, of which only the essential Components are shown, namely a means for holding a winding core 1, a means for feeding the flat objects 2 to a winding point 3 on the periphery of the winding core 1 or an emerging winding 4, means for feeding and tensioning the winding tape 5 and a drive, not shown , through which the winding core 1 or the resulting winding 4 is driven to rotate in the direction of the arrow.
• the winding device now has means 6 for generating an additional pressing force on the winding periphery of a winding 4 created in the device.
• a core arm 11 which can be pivoted about a fixed core pivot point 10 and on which the winding core 1 is arranged so as to be rotatable about the winding axis A.
• a pair of conveyor belts 12 running in parallel and spaced from one another is provided, of which only the conveyor run is shown. On these conveyor belts 12, the objects 2 are fed loosely, for example in a shingled formation.
• a braked rotatable winding tape roll 13 and a tape deflection roller 14 are provided as a means for feeding and tensioning the winding tape 5.
• a roller 15 can be arranged in this area, with the aid of which the conveyor belts 12 and thus the supplied objects 2 and the winding belt 5 are pressed against the winding core 1 or against the winding 4 that is being created become.
• the means 6 for generating the additional pressing force has, for example, a pressing roller 20, a pressing lever 21 and a pressing drive 22, which are arranged, for example, on a device frame (not shown) in such a way that the pressing drive 22 presses the pressing roller 20 against the periphery of FIG of the device resulting from the winding 4 presses, advantageously in a pressing area which lies behind the winding point 3 in the winding direction. If the If winding point 3 is in the area of the lower vertex of the resulting winding 4, that is to say in the 6 o'clock position, and the winding direction is oriented clockwise, the pressing area is advantageously, as shown in FIG. 1, in a position between 4 and 5 o'clock, if necessary, 5:30 a.m., i.e. at an angle of approximately 15 to 60 ° from the winding point 3.
• the press drive 22 is, for example, a piston / cylinder unit, for example hydraulically operated, which is freely pivotable about a fixed drive pivot point 23 and in which the pressure is regulated as required or a constant pressure is maintained.
• the press lever 21 is, for example, pivotably arranged about a fixed lever pivot point 24, has a freely movable joint 25 and is articulated between the joint 25 and the lever pivot point 24 with the piston / cylinder unit 22.
• the press roller 20 is arranged to rotate freely.
• the roller-carrying lever end or the press roller 20 is guided by a guide 26 oriented approximately parallel to the feed belts 12.
• the guide 26 is indicated schematically by a dash-dotted line.
• a winding process with the winding device shown in FIG. 1 proceeds as follows:
• the winding core is in its position denoted by 1 'and shown in broken lines.
• the winding tape 5 is wound on the winding tape roll 13 and its beginning is attached to the periphery of the winding core 1.
• the press drive 22 is in a fully extended state or presses the press roll against an end stop of the guide 26, advantageously in such a way that the press roll 20 is slightly spaced from the winding core 1 (position of the press roll shown by dash-dotted lines and designated 20 ′).
• the press roller 20 begins to exert the additional pressing force while it rolls on the periphery of the resulting winding 4.
• the winding diameter increases and the winding core 1 moves upwards.
• the pressing roller 20 is pressed against the right in the guide 26, the pressing force remaining approximately the same.
• the extended positions of the winding core 1 and the press roller 20 illustrate approximately the end of the winding process.
• Figure 1 also shows a third position of the press roller 20 and the press lever 21, shown in dash-dot lines and designated 20 "and 21". This position is reached when the piston / cylinder unit is completely retracted and serves to remove the press roller from the area of the roll 4, for example for unwinding.
• FIGS. 2 and 3 show, with the same viewing direction as FIG. 1, but significantly more schematically than this, two further exemplary embodiments of the device according to the invention.
• the components of the device are essentially the same as those of the device according to FIG. 1 and are also designated with the same reference numbers.
• Figure 2 shows an embodiment of the device according to the invention with two press areas, one in front and one behind the winding point 3.
• the two means 6.1 and 6.2 for generating the additional pressing force each have a press roller 20.1 and 20.2, a press lever 21.1 and 21.2 and one Press drive in the form of a press spring 30.1 and 30.2, which press the press lever 21.1 and 21.2 against Drives the winding core 1 or against the emerging winding 4 and presses it to generate the additional pressing force.
• FIG. 3 shows a means 6 for generating the additional pressing force, which has a plurality of pressing rollers 20.3, 20.4, 20.5. So that the arrangement of press rolls 20.3, 20.4, 20.5 can adapt to the curvature of the winding periphery which decreases during the winding process, it has an articulated roll carrier 31 which is prestressed by a biasing spring 32.
• FIGS. 4 and 5 show two further exemplary embodiments of means 6 for generating the additional pressing force with a viewing angle perpendicular to the winding axis A.
• a respective winding 4 with winding tape 5 and pressing rollers 20 and parts of pressing levers of the means for generating the additional pressing force are shown (21, 210, 210 ') and press roller guides (26).
• FIG. 4 shows a press roll 20 with an axial length that is at least as large as the width of the wound articles 2 and with a central area 40 with a reduced diameter.
• This central area has an axial extent which is at least as large as the width of the winding tape 5.
• the press lever 21 is designed as a fork and has a press lever part 210 and 210 'carrying the press roller 20 on each side of the roll 4.
• the reduced, central area 40 of the press roll 20 ensures that the additional pressing force acts only on lateral areas of the winding periphery and not on the winding tape 5.
• FIG. 5 shows a means 6 for generating the additional pressing force, a two-part pressing roller 20, the partial rollers 200 and 200 'of which are operated independently of one another.
• the two partial rollers 200 and 200 ' are essentially coaxial - left
• each press lever part 210 and 210 ' is arranged and each rotatably mounted on the press lever parts 210 and 210 'via an axle stub.
• a separate press drive (not shown) is provided for each press lever part 210 and 210 'in such a way that the pressure is decoupled from one another by the two part rollers 200 and 200'.
• the press roller arrangement shown in FIG. 5 is particularly suitable for the production of coils from flat objects which have different thicknesses on the two sides of the winding tape, that is to say for example for the production of coils from double-folded printed products.
• the press rolls as shown in FIGS. 4 and 5, can be used, for example, in the devices as shown in FIGS. 1 to 3. They can also be combined with one another.

Applications Claiming Priority (3)

Publications (2)

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• 2001
  • 2001-01-12 DK DK01900069T patent/DK1252083T3/da active
  • 2001-01-12 EP EP01900069A patent/EP1252083B1/fr not_active Expired - Lifetime
  • 2001-01-12 US US10/182,890 patent/US6719235B2/en not_active Expired - Lifetime
  • 2001-01-12 WO PCT/CH2001/000022 patent/WO2001056910A1/fr active IP Right Grant
  • 2001-01-12 DE DE50100553T patent/DE50100553D1/de not_active Expired - Lifetime
  • 2001-01-12 AU AU23385/01A patent/AU773672B2/en not_active Ceased
  • 2001-01-12 AT AT01900069T patent/ATE248117T1/de active
  • 2001-01-12 ES ES01900069T patent/ES2204825T3/es not_active Expired - Lifetime
  • 2001-01-12 CA CA002398645A patent/CA2398645C/fr not_active Expired - Fee Related

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