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
  • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
  • B65H5/34—Varying the phase of feed relative to the receiving machine
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
  • B65H2511/20—Location in space
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
  • B65H2511/50—Occurence
  • B65H2511/51—Presence
  • B65H2511/514—Particular portion of element

Definitions

• the invention relates to methods and devices according to the preamble of claims 1, 6, 7 and 8.
• DE AA 13 238 A1 discloses a method for transporting sheets. For this purpose, machine elements of a machine are to be controlled synchronously with the selectable distances between the sheets. Machine elements for performing this method are not described in more detail in DE AA 13 238 A1.
• WO 9A / 18103 describes a device for generating a sheet sequence of single sheets for a laminating machine.
• the sheets are gripped and accelerated by an accelerating roller and pinch rollers.
• the speed of the accelerating roll has / based on the engine speed can not be changed.
• the invention has for its object to provide methods and devices for transporting sheets.
• the methods and devices according to the invention ensure that sheets to be processed on a processing cylinder can be processed in close succession. Even with changing format lengths of the sheets to be processed, it is possible to keep the distance between two successive sheets to a minimum by using interchangeable processing cylinders with different diameters. Particularly in the case of foil embossing machines with a continuous supply of an endless foil for the application of patterns to sheets, it is important to make the distance between two successive sheets as small as possible in order to achieve good foil utilization.
• a suction drum is advantageously carried out by means of a suction drum. Does a ratio of a first distance to a second distance of consecutive sheets have to be changed, e.g. B. with different format lengths, this is done by simply preselecting appropriate movement laws of a corresponding software of a single drive, z. B. a Se rvomotores possible. Suction drums are particularly suitable for this, because in contrast to drums equipped with gripping systems, they can grip or release a bow in any position, which is cheap Movements possible.
• a downstream cooling roller or a delivery for example, remains unchanged like intermediate conveyor belts. Only the speeds of the Köhl roller, conveyor belts and suction rollers can be adjusted to each other. A fine adjustment of the transport speed is possible, in particular for the conveyor belts, in order to be able to adjust them to the smallest changes in the transport speed of the sheets, for example due to paper quality, sheet thickness or type of processing. This adaptation is carried out in a particularly simple manner by means of software-controlled individual drives.
• the processing cylinder can be replaced, since it is provided with rollers arranged on its bearing plates.
• the processing cylinder is axially displaced for exchange in guides fixed to the frame and placed on a transport trolley. This process takes place without further aids such. B. a crane, and without great effort.
• the machining cylinder is provided with suction strips so that there is only a minimal channel that cannot be used for machining. Furthermore, a known sheet delivery with Kettengrel fersystemen can be used in an advantageous manner, since the distance between two successive sheets after processing is increased to a distance required for the Kettengrei fersysteme.
• the sheet processing machine can be easily adapted to different format lengths of the sheet to be processed.
• Sheet transport means are significantly reduced.
• Fig. 1 is a schematic side view of a sheet processing machine
• Fig. 2 is a schematic plan view of the sheet processing machine. An upstream of a sheet processing machine
• Scale feeder 1 is provided with a belt table 2, which leads to a sheet feeder 3.
• the sheet system 3 essentially consists of a first suction drum A,
• Transfer drum 8 Scale feeder 1 and sheet feeder 3 have a common drive 9, for. B. a speed and / or position-controllable electric motor. This drive 9 drives the transfer drum 8 uniformly, so that the
• Transfer drum 8 a definable
• Transfer drum 8 corresponds to one
• the suction drum A is by means of a
• Gear e.g. B. a stepping transmission, driven so irregularly that they alternate from
• the peripheral speed is accelerated and then decelerated to a standstill.
• the suction drum A can also be driven by means of its own independent electric motor, the speed and / or angle of rotation of which is then specified
• Suction drum 8 A aligned baffle 11 arranged, which leads to the transfer drum 8.
• this guide plate 11 are devices 6 parallel to the transfer drum 8, out of a sheet transport plane, under which
• Baffle plate 11 is pivotally arranged.
• Transfer drum 8 a plurality of sheet guide rollers
• a second guide plate 13 leads from the transfer drum 8 to a processing cylinder 1A
• This guide plate 13 consists of two sections 16, 17, the first section 16 in turn being oriented tangentially to the transfer drum 8.
• the second section 17 is pivotally arranged with respect to a processing cylinder 1A nearest end of the first part 16 so that a processing cylinder 1A facing the end of the second section 17 of the guide plate 13 is in the immediate vicinity of the processing cylinder 1A, approximately tangential to it can be brought aligned.
• Tei l Swiss 13 is adaptable to differently sized processing cylinders 1A.
• Tei l Swiss 17 is pivotally mounted in side frames and is sprung, z. B. by means of pneumatic cylinders against the Machining cylinder 1A pressed. Below this
• Baffle 13 is one with the second part 17 of the
• Guide plates 13 movable second suction drum 18 arranged, i.e. the position of the suction drum 18 is adaptable to the diameter D1A of the processing cylinder.
• This second suction drum 18 has its own speed and / or position controllable drive 19.
• an electric motor is provided, the speed and / or angle of rotation of which can be regulated according to predeterminable laws of motion.
• this drive 19 is a
• Circumferential speed u18 of the suction drum 18 is regulated in such a way that it first has machine speed u m, then braked to a lower circumferential speed u18 'and then up again
• Circumferential speed u1A of the machining cylinder 1A which by using different
• Diameters are created, adaptable. The
• the peripheral speed u18 of the suction drum 18 is in a range of a ratio of that
• Machine speed u to the smaller m peripheral speed u18 'of the suction drum 18, e.g. B. u / u18 ' 1.1 to 3, continuously variable, ie the m ratio of this speed in relation to the
• the number of sheets to be processed (processing cycle) per unit of time can be changed.
• Suction drum 18 can also, for example, by means of a non-uniform movement
• a single z. B. trained as a suction drum Transpprteinri device can be provided, which passes a sheet from the belt table directly to the processing cylinder 1A.
• the sheet for transfer from the stationary position is accelerated to a somewhat higher speed than the peripheral speed u1A of the processing cylinder 1A.
• the speed prevailing during the transfer of the sheet to the processing cylinder 1A can be changed, i.e. the ratio of this speed to the number of sheets to be processed (processing cycle) per unit of time can be changed.
• This processing cylinder 1A has a diameter D1A of z. B. 606 mm and is provided with four axially extending, evenly distributed on the circumference holding systems 21, for example squeegees 21. These suction strips 21 have only a small width in the circumferential direction of the processing cylinder 1A 97/35795 PCI7DE97 / 00523
• Front marks for aligning the sheets 23 on the processing cylinder 1A are arranged in front of the respective suction strips 21.
• An otherwise closed lateral surface 22 of the processing cylinder 1A is only interrupted by these suction strips 21 and front marks arranged directly in front of the suction strips 21. These front marks are arranged parallel to the suction strips 21 and have a thickness of 3 to A mm, for example.
• the diameter D1A, e.g. B. 606 mm or the circumference U1A z. B. 190A mm of the processing cylinder 1A is on a length 123, z. B.
• the sheet 23 to be processed adapted ie a length of the circumference between these front marks corresponds to the length of the sheet 23 to be processed (circumference U1A of the processing cylinder 1A divided by the number of suction strips 21, minus the thickness of the front marks gives the length 123 of the arc 23 with optimal cylinder utilization).
• These suction strips 21 are acted upon by suction or blown air in a controlled manner by means of a rotary inlet.
• this processing cylinder 1A can be provided with four suction strips 21 and four corresponding segments of the lateral surface 22.
• the holding systems 21 can also be used with conventional ones Be provided with grippers.
• This machining cylinder 14 is arranged interchangeably so that machining cylinders 1A with different lengths of the segments of the lateral surface 22 can be used, i.e. Machining cylinder 1A with different diameters D1A, z. B. 50A mm to 672 mm. Machining cylinders 1A with diameters D1A of different sizes mean that a working surface of the holding systems 21 is at different radii from the axis of rotation.
• the sheet processing machine is by changing the processing cylinder 1A to different lengths 123, z. B. A00 mm to 700 mm of the sheet 23 to be processed.
• this is provided with bearing plates 2A to which rollers 26 are attached.
• These rollers 26 are guided in the side frames mounted guides 27, for example two mutually facing, axially extending U-rails, so that the processing cylinder 1A can be removed in the axial direction from the processing machine.
• the guides for example on a transport trolley, and to bring them into the Bogenve rarbei processing machine only when required.
• the end shields 2A remain connected to the processing cylinder 1A.
• the processing cylinder 1A is used with uniform,
• Machining cylinder 1A is changeable. This is in the present example by a separate drive 28, for. B «a speed and / or position controllable
• a guide plate 30 and a first guide roller 29 of a system of conveyor belts 31 are arranged after the processing cylinder 1A.
• the position of this guide roller 29 and the guide plate 30 can be adapted to the diameter D1A of the processing cylinder 1A.
• a number of conveyor belts 31 lying next to one another in the axial direction are guided around this guide roller 29.
• a suction drum 36 is arranged below the conveyor belts 31 and between the conveyor belts 31, the lateral surface of which affects the transport plane of the sheets 23 in this area.
• This suction drum 36 can also be arranged immediately after the conveyor belts 31.
• a box can optionally be loaded with suction air is arranged below the perforated conveyor belts 31.
• This box also has openings on its side interacting with the perforated conveyor belts 31.
• the conveyor belts 31 are returned to the first guide roller 29 via a steering roller 37 and a fourth guide roller 38.
• the guide roller 38 is movably mounted, for example.
• a peripheral speed u32 of the cooling roller 32 and a transport speed v31 of the conveyor belts 31 is approximately equal to the peripheral speed u1A of the processing cylinder 1A.
• the peripheral speed u1A based on a machining cycle per unit time of the machining cylinder 1A, which is interchangeable, for example, is variable depending on a respective diameter D1A. That is why Transport speed v31 of the conveyor belts 31, ie the cooling roller 32, can be adapted to the peripheral speed u1A of the processing cylinder 1A.
• the transport speed v31 of the conveyor belts 31 can be finely adjusted, ie to the peripheral speed u1A des Machining cylinder 1A adaptable.
• the cooling roller 32 in the present example is equipped with its own drive 39, z. B. a speed and / or position-adjustable electric motor, provided while the conveyor belts 31 are driven by friction from the cooling roller 32.
• a positive drive for example starting from the processing cylinder 1A, e.g. B. gear or belt transmission, can be provided, wherein an adjusting gear is arranged for example continuously changing a gear ratio between the cooling roller 32 and processing cylinder 1A.
• a delivery A1 known per se adjoins the conveyor belts 31.
• a guide plate A2 is arranged in the transition area between the conveyor belts 31 and the delivery A1.
• This display A1 is with a 1 A
• Chains A3 a number of gripper systems AA 1 are attached at a distance aAA - based on the stretched chain A3. These gripper systems AA come with a
• Transport speed vAA moves that is greater than that
• Transport speed v31 of the conveyor belts 31 is.
• This transport speed vAA of the gripper systems AA approximately corresponds in the present example
• the gripper systems AA place the sheets 23 on a sheet stack A6 of the delivery A1.
• the suction drum 36 in front of the delivery A1 has its own speed and / or position-controllable drive A7.
• an electric motor is provided, the
• the peripheral speed u36 of the suction drum 36 is regulated in such a way that the suction drum 36 first
• Transport speed v31 of the conveyor belts 31 is delayed. This "overspeed" is necessary in the present example in order to move the arc 23 between the suction drum 36 and the gripper system AA to cover.
• the course of the speed is of course to be adapted to the geometric conditions of the sheet processing machine, the
• suction drum 36 can also be driven by the drive 39
• Cooling roller 32 are moved, for example, by interposing a cam mechanism generating a non-uniform movement.
• the peripheral speed of the suction drums 18, 36 can be changed in relation to the machine speed u, m. Also the laws of motion, e.g. B. the during a transport of the gripped sheet
• Sheet format and / or machine speed can be changed.
• the processing machine designed as a foil stamping machine.
• the processing cylinder 1A is here an embossing cylinder A8.
• the embossing cylinder 48 is provided with embossing stamps on its outer surface, which are electrically heated. The energy supply to the embossing dies on the embossing cylinder Under 48 takes place via a loop-mounted flange transmitter.
• the embossing cylinder 48 in the present example is a device (not shown) for feeding and removing an endless carrier film 49, e.g. B. a hot stamping foil 1 e arranged.
• the carrier film 49 is brought to the embossing cylinder 48 by means of an unwinding station in the region of the section 17 of the guide plate 13 near the cylinder and is guided around the embossing cylinder A8 with the sheet 23.
• the carrier film A9 is guided to the first guide roller 29 of the conveyor belts 31 and from there with the conveyor belts 31 around the cooling roller 32 to the second guide roller 33 of the conveyor belts 31.
• a film detaching device 51 is arranged. From this film release device 51, the carrier film A9 is guided to a winding up station.
• a number of pressure rollers 52 which cooperate with the embossing cylinder A8 are arranged below the embossing cylinder A8.
• two rows of axially extending pressure rollers 52 are formed spring-loaded against the A8 embossing cylinder by means of Pneumati kzy Under 53.
• a total of three pairs of rows of these pressure rollers 52 are provided here.
• a stroke of the pneumatic cylinder 53 is dimensioned such that the pressure rollers 52 can be set against both the largest and the smallest embossing cylinder 48.
• the adjustment of the guide plate 30 and the guide roller 29 can advantageously be coupled to the pneumatic cylinders 53.
• the processing machine can be used as a foil stamping machine, other uses are also possible, e.g. B. the processing cylinder 14 can be used as an impression cylinder of a sheet-fed rotary printing press.
• a single sheet feeder can also be provided instead of the scale feeder 1.
• the method of operation of the processing machine according to the invention is as follows:
• the sheets 23 to be fed are separated from a sheet stack 46 by means of the shed feeder 1 and over the belt table 2 of the sheet feeder 3
• the sheets 23 are aligned with the advance marks 6 protruding from the guide plate 11 in the circumferential direction and from the side marks 7 in the axial direction. Is the sheet 23 aligned, the suction drum 4 with
• Circumferential speed u4 accelerates as the circumferential speed u8 of the transfer drum 8 and thereby to
• Transfer drum 8 promoted. After reaching the
• Transfer drum 8 the sheet 23 is aligned with alignment marks in the circumferential direction and by one
• Gripper system 5A detected.
• the suction air of suction drum A is switched off.
• the gripper system 5A of the transfer drum 8 transports the sheet 23 to the first sheet 23
• Circumferential speed braked u18 laying a path to the corresponding front marks of the Machining cylinder 1A back. Since the current peripheral speed u18 of the sheet 23 is greater than the peripheral speed u1A of the processing cylinder 14, a start of the sheet 23 abuts the front marks. As a result, the sheet 23 is again aligned in the circumferential direction, with either the sheet 23 sliding on the suction drum 18 or a shortening curvature being forced on the sheet 23. The suction bar 21 is now acted upon by suction air and the arch 23 is thus held. The distance a1 between two successive arches 23, 25 was thereby reduced to a distance a2. In the present example, the distance a2 from the end of a leading sheet 23 to a beginning of a trailing sheet 25 on the processing cylinder 14 is approximately 4 mm.
• the carrier film 49 is fed to the embossing cylinder 48 from the unwinding station.
• the carrier film A9 does not extend in the axial direction over the entire width of the sheet, but only narrow strips of carrier film A9 are present in the area of the pattern to be applied, and sheet 23 is located above carrier film A9.
• Carrier film A9 and sheet 23 are now pressed during the rotation of the embossing cylinder A8 by means of the pressure rollers 52 against the heated stamping dies located in the outer surface of the embossing cylinder A8.
• a pattern or image applied to the carrier film A9 is thereby applied to the sheet 23, 25.
• the suction air of the suction bar 21 is switched off and the suction bar 21 is briefly pressurized with blowing air to quickly detach the sheet 23.
• the end of the sheet 23 is still clamped between the embossing cylinder A8 and the pressure roller 52, as a result of which the beginning of the sheet 23 is pushed towards the first guide roller 29 of the conveyor belts 31.
• the carrier film 49 under the conveyor belts 31 is guided along the path of the conveyor belts 31 from the first guide roller 29 via the cooling roller 32 to the second guide roller 33.
• the sheets 23, 25, which follow one another very closely, are clamped between the carrier film 49 and the conveyor belts 31.
• the sheets 23, 25 are thus guided from the guide roller 33 via the cooling roller 32 to the second guide roller 33.
• the carrier film 49 is separated from the sheets 23, 25 by means of the film detaching device 51.
• the carrier film 49 is fed to the winding station.
• the perforated conveyor belts 31 are guided over a suction box and thus acted upon by suction air.
• the sheets 23, 25 are sucked onto the conveyor belts 31 after the second guide roller 33 and continue to be conveyed at a short distance to the suction drum 36 arranged in front of the delivery 41.
• suction air is applied to it and so sucks the sheet 23.
• the suction air of the conveyor belts 31 is switched off.
• the sheet 23 is then v31 from the transport speed the conveyor belts 31 accelerated to the transport speed vAA of the gripper systems A4 of the delivery 41, that is to say in the present case on machine speeds 1, 2.
• the distance a2 between two successive sheets 23, 25 is increased to a distance a3, so that for example the distance a3 between the end of the leading sheet 23 and the
• the beginning of the trailing sheet is 25 408 mm.
• the gripper system 44 then deposits the sheet 23 on the sheet stack 46 of the delivery 41.
• suction drums 18, 36 are used to change a first distance a1 or a2 between leading sheet 23 and trailing sheet 25 into a second distance a2 or a3.
• at least one of the two associated distances a1, a2 and a2, a3 can be changed.
• suction drums 18, 36 are each provided on their outer surface with a plurality of openings which can be acted upon by suction air.
• transport devices 18, 36 in the form of drums with one or more gripper systems or in the form of gripper systems which execute an oscillating movement (principle “vibration systems”).
• the distances a1 and a3 to A08 mm and the result Distance a2 to 4 mm with a minimum length 123 of 355 mm, the distances a1 and a3 are 524 mm.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
• Delivering By Means Of Belts And Rollers (AREA)
• Registering Or Overturning Sheets (AREA)
• Treatment Of Fiber Materials (AREA)
• Sheets, Magazines, And Separation Thereof (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)

Applications Claiming Priority (3)

Publications (2)

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• 1996
  • 1996-03-23 DE DE19611561A patent/DE19611561A1/de not_active Withdrawn
• 1997
  • 1997-03-14 DE DE59711547T patent/DE59711547D1/de not_active Expired - Lifetime
  • 1997-03-14 AT AT97920515T patent/ATE264799T1/de active
  • 1997-03-14 EP EP97920515A patent/EP0888240B1/fr not_active Expired - Lifetime
  • 1997-03-14 WO PCT/DE1997/000523 patent/WO1997035795A1/fr active IP Right Grant
  • 1997-03-14 CN CN97194081A patent/CN1081592C/zh not_active Expired - Lifetime
  • 1997-03-14 US US09/142,925 patent/US6182959B1/en not_active Expired - Lifetime
  • 1997-03-14 JP JP53392997A patent/JP4219982B2/ja not_active Expired - Lifetime
• 2007
  • 2007-08-08 JP JP2007207084A patent/JP2008037657A/ja active Pending

Non-Patent Citations (1)

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