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
  • B65H3/00—Separating articles from piles
  • B65H3/08—Separating articles from piles using pneumatic force
  • B65H3/12—Suction bands, belts, or tables moving relatively to the pile
  • B65H3/124—Suction bands or belts
  • B65H3/128—Suction bands or belts separating from the top of pile
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H1/00—Supports or magazines for piles from which articles are to be separated
  • B65H1/26—Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
  • B65H1/263—Auxiliary supports for keeping the pile in the separation process during introduction of a new pile
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H1/00—Supports or magazines for piles from which articles are to be separated
  • B65H1/30—Supports or magazines for piles from which articles are to be separated with means for replenishing the pile during continuous separation of articles therefrom
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
  • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
  • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
  • B65H9/105—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop using suction means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2404/00—Parts for transporting or guiding the handled material
  • B65H2404/20—Belts
  • B65H2404/26—Particular arrangement of belt, or belts
  • B65H2404/264—Arrangement of side-by-side belts
• • 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
  • B65H2701/17—Nature of material
  • B65H2701/176—Cardboard
  • B65H2701/1762—Corrugated

Definitions

• the invention relates to the field of plate element processing machines, and more particularly to a method for introducing elements made of corrugated board or microstrip board and a device for implementing the method.
• a first category of these devices uses a pack of plates whose lower plate is taken by a transport device such as for example a suction plate, belts or vacuum roller.
• a transport device such as for example a suction plate, belts or vacuum roller.
• these devices are provided with a gauge which is set to an empirical value of approximately 1.5 times the height of the plate element to be taken.
• the gauge damages the plates to introduce, especially on their front edge. Taking the plates from the bottom also involves a significant friction between the plate that is introduced and the next. It is not uncommon to note marks on the plates due to this friction, which can for example deteriorate an impression made on the surface of the plate, when the introduction concerns a post-impression processing machine, such as for example a machine cutting.
• An additional disadvantage arises from the fact that the precision of introduction of the plates is highly dependent on the height of the package.
• pre-feeder which from a stack is a sheet that comes load the package of plate introduction device. This device provides continuous power, even during battery changes. It is also responsible for evacuating the last few plates of the battery that have been damaged during the transport of the battery, especially for corrugated sheets.
• the creation of the sheet is also made using a gauge which also can potentially damage the plate.
• a second category of devices called feeders picks the plates at the top of the stack, which avoids the damage caused by the feeder gauge.
• this kind of device can not ensure both the continuous supply and the evacuation of the last plates of the pile damaged by the transport, in particular for corrugated board plates. In addition to ensure continuous feeding, it requires a special palette.
• the state of the art therefore does not propose a method or device for introducing plates simultaneously allowing a continuous supply, the evacuation of the plates at the bottom of each stack, without risk of damage to the plates due to different gauges.
• the state of the art feeders is very poorly suited to inkjet printing machines. Indeed, for reasons of reliability and economic, it is advantageous to have the smallest width possible, especially for a machine "single-pass". For this reason in this kind of machine, the plate is put in large format with the long side in the direction of thrust. The pre-feeder and feeder according to the state of the art then become extremely long and it becomes difficult to place the machine in an existing factory.
• edge of the plate is not damaged because a defect on the edge could lead to a contact between the plate and the print heads that must be avoided at all costs to avoid 'damage the printheads.
• the invention particularly aims to overcome all or part of these disadvantages of the prior art. More specifically, it is an objective of at least one of the embodiments of the invention to provide a method and a device for introducing plates for a processing machine, which does not damage the edge or surface of the plates or by gauges, or by excessive friction. At least one of the embodiments of the invention provides an introduction with a continuous supply. At least one embodiment of the invention allows the evacuation of the plates at the base of the stack.
• a device according to the invention is particularly suitable for the introduction of corrugated or micro-fluted cardboard plates for a digital printing machine according to the method according to the invention.
• a method of introduction of corrugated board elements or micro-flute in a processing machine, comprising a step of depositing a pack of plate elements on an elevator, a step of gradual rise of the elevator carrying the package, a capture step during which a vacuum effect is applied on the upper surface of the plate member at the top of the package and a transport step in which the grasped plate member is transported to the converting machine.
• At least the front portion of the gripped plate member is lifted during the gripping step.
• the vacuum effect is applied to at least two distinct zones of the upper surface of the plate element at the top of the packet, and the displacement is controlled separately for each zone of application of the vacuum effect during the transport step.
• the method comprises a non-stop phase comprising
• a packet merge step in which the residual packet is deposited at the top of the second packet
• a step of gradual rise of the elevator carrying the fused package makes it possible to introduce plates into the processing machine without requiring interruption to add new packets of plates.
• the method comprises, in addition to the non-stop step, an unstacking step during which the second packet is formed from a stack of plate elements.
• the method allows the continuous introduction of the plates without deteriorating the front edge or the surface, from large stacks which can be removed the last plates damaged by transport.
• the invention also relates to a plate element introduction device for a corrugated board plate converting machine, comprising an elevator for receiving a pack of plate elements, a vacuum transport device for gripping the plate. plate element located at the top of the package by applying the vacuum effect and transporting it to the processing machine and a controller for controlling the movements of the elevator and controlling the vacuum transport device.
• a plate element introduction device for a corrugated board plate converting machine, comprising an elevator for receiving a pack of plate elements, a vacuum transport device for gripping the plate. plate element located at the top of the package by applying the vacuum effect and transporting it to the processing machine and a controller for controlling the movements of the elevator and controlling the vacuum transport device.
• the vacuum transport device is capable of lifting at least the front part of the plate at the top of a package and is able to advance the plate in a controlled manner, in order to limit the risk of transporting a second plate adhering to the plate. capture.
• the vacuum transport includes a vacuum chamber and a belt having openings through which said vacuum chamber is adapted to apply a vacuum effect on the upper surface of the plate at the top of a package to enter it.
• the introduction device comprises at least two vacuum transports each comprising a vacuum chamber and a belt having openings through which said vacuum chamber is able to apply a vacuum effect on an area of the upper surface of the plate.
• the controller separately controls the movements of each belt of the vacuum transports and makes it possible to correct during the transport of any positioning errors of the plate seized.
• the introduction device comprises a non-stop device capable of receiving the residual pack of plate elements until it mergers with a new pack of plate elements.
• a non-stop device capable of receiving the residual pack of plate elements until it mergers with a new pack of plate elements.
• such an introduction device with a non-stop device also comprises a removal table adapted to receive a pack of plate elements to be merged with the residual pack of plate elements.
• the introduction device makes it possible to introduce plates into the processing machine without interruption when a new pack of plates is provided.
• the introduction device with a non-stop device and a removal table also comprises an unstacking device able to form packets from a stack of plate elements and to deposit them on the deposit table;
• the unstacking device advantageously comprising a packet separator device and a clamp adapted to grip a package separated by said separator device and to deposit the package on the deposit table.
• the device makes it possible to introduce plates into the processing machine in a continuous manner and without deteriorating the front edge or the surface, from large stacks which can be rejected from the base plates which have been damaged during the treatment. transport of the battery.
• Fig. 1 schematically represents a feeder and a pre-feeder according to the state of the art
• Fig. 2 to FIG. 8 represent an introduction device according to the invention
• FIG. 9 shows an example of introduction device according to the invention equipped with an optional unstacking device
• Fig. 10 to FIG. 12 show construction details of the optional unstacking device.
• Fig. 1 schematically illustrates a method and a device for introducing elements of corrugated board or micro-groove according to the prior art.
• a feeder 10 comprises a gauge 11 allowing a transport device 12 to separate the plate member 13 at the bottom of the packet 14, and to transport the plate member 13 to a machine not shown.
• a web 15 of plate elements frequently feed the feeder 10, so that the level of the package 14 remains substantially constant.
• This sheet 15 is created by a pre-feeder 20 comprising a gauge 21, a transport device 22.
• a pusher device 23 makes it possible to split a stack 24 of plate elements into a succession of packets 25 feeding the pre-feeder.
• the gauges 11 and 21 are difficult to adjust, in particular for plate thicknesses less than 1.5 millimeters, and are responsible for many jams. In addition these gauges frequently deteriorate the front edge of the plate elements, which is problematic for the introduction of plate elements in a digital printing machine.
• the pusher device 23 may also mark the trailing edge of the plate elements, or even push the package across.
• FIG. 2 to FIG. 9 show an introducer 30 according to the invention, comprising an elevator 31 on which is placed a pack 32 of plate elements, for example corrugated cardboard or micro-groove.
• a controller 33 controls the movement of the elevator
• a vacuum transport device 34 raises at least the front portion of the plate member 35 located at the top of the pack 32 by applying a vacuum effect to the surface of the plate, and transports the plate 35 in a controlled manner to the machine. transformation not shown.
• Fig. 3 shows the plate member 35 at the end of the transport phase.
• the corrugated or micro-corrugated board elements are introduced into the processing machine after having been grouped into packets, each plate being separated from the top of the pack and introduced without pass through gauges or rub on its upper surface.
• the preliminary step of packing from a stack can be done in many different ways. This is an additional step compared to the conventional operation of the feeders according to the prior art which directly use the batteries placed on pallets.
• the use of packets in the introduction process makes it possible to dispense with the pallets, it also makes it possible to discard the last plates of the batteries which are very frequently damaged, and finally it makes it possible to reduce the height of the device. Indeed, the stacks of plate elements are large and their direct use requires either raising the machine or lowering the battery power
• the vacuum transport device 34 can take many forms.
• the illustrated embodiment advantageously comprises two vacuum transport devices 34, placed on a support member 36 and whose spacing can be adjusted to fit the width of the plate elements.
• each vacuum transport 34 can be individually controlled during the transport phase, which makes it possible to correct any positioning error of the plate 35 at the top of the package 32.
• the vacuum transport device 34 comprises a vacuum box 37 and a belt 38 provided with openings through which the vacuum box 37 can apply the vacuum effect to the surface of the plates 34 captured and transported.
• the setting in motion of the belt 38 makes it possible to transport the plate 34 once it has been grasped by application of the vacuum effect.
• Fig. 5 represents a particular embodiment where the support member 36 is hollow so as to protect containing the devices for transmitting the vacuum effect into the caissons 37 of the two vacuum transport devices 34.
• two pipes 39 emerge from the support device 36 and are connected to openings provided in the side of the vacuum boxes 37 of the vacuum transport devices 34.
• Fig. 4 represents the moment when arrives under the vacuum transport device 34 the rear end of the plate 35 introduced into the processing machine.
• the introduction device 30 prevents the next plate 40 from being seized immediately, in order to limit the risk of downstream stuffing in the processing machine. Different embodiments of this function are possible, depending on the type of substrate worked and the machine powered.
• the vacuum transport device 34 to stop the movement of the belt 38 before a part of the vacuum chamber 37 is found by the rear portion of the plate 35 introduced.
• the inserted plate 35 is then transported by the processing machine, its sliding rear part on the belt of the vacuum transport 38.
• the vacuum effect applies to the next plate 40 as the plate 35 introduced discovers the box vacuum 37, without the following plate 40 being transported since the belt 38 of the vacuum transport device 34 is not moving.
• the vacuum effect can be cut to limit the friction, or even use a device separation piece 41 which moves the end of the plate 35 away from the belt 38, for example by means of a movable pad advantageously having a very low coefficient of friction.
• the introducer shown in FIG. 2 to FIG. 9 is equipped with an optional rear jogging device 42 and an optional support device 43.
• the rear jogging device 42 makes it possible to correctly position the plates situated at the top of the pack 32 against the support device 43.
• support device 43 here takes the form of a plate.
• the elevator 31 mounts the package 32.
• the rise of the elevator 31 is controlled by a controller 33 shown schematically in FIG. 5, but whose position within the introduction device 30 is not important.
• the distance to be mounted to each plate can be calculated if the thickness of the plates is sufficiently constant, or deduced by the controller 33 by means of measurements or detections made by sensors, for example placed in the rear jogging device.
• the controller 33 typically of the microprocessor or microcontroller type, also makes it possible to control the vacuum transport device 34.
• FIGS. 2 to FIG. 9 show an example of introduction device 30 according to the invention equipped with a particularly advantageous non-stop device 45.
• the non-stop device 46 comprises a gate 46 which is outside the insertion device 30 when the non-stop device 45 is not in action.
• the gate 46 of the non-stop device 45 is inserted into the insertion device 30 when the elevator 31 reaches a certain height.
• the elevator 31 consists of rollers, the grid 46 of the non-stop device 45 being interposed between the rollers. As at this stage the non-stop device 45 has nothing to wear, the bending of the grid
• the grid 46 of the non-stop device 45 bears on its two ends when the elevator 31 descends, so as to support the weight of the remaining pack 32 without bending.
• the rise of the gate 46 of the non-stop device 45 is controlled by the controller 33, so that the insertion device 30 continues to supply the machine with the plates of the remaining pack 32, which enables a new pack 47 to be placed. on the elevator 31.
• the elevator 31 is raised until the new package 47 is almost in contact with the grid 46 which is then removed, so that the residual package 32 merges with the new package 47.
• the frame for raising and lowering the device 45 can also carry one or more support devices for retaining the front edge of the last plates that make up the residual package 32 when the grid 46 of the non-stop device 45 is removed.
• These support devices may be passive, such as flexible hooks or brushes or be one or more active devices controlled by the control unit 33. This limits the risk of interruption of the plate supply related to the melting of the residual package 32 with the new package 47.
• the rollers of the elevator 31 are driven by friction.
• the elevator 31 can thus move the package 47 to the support device 43 without the need to motorize the rollers of the elevator 31.
• the rollers of the elevator can be motorized.
• the introduction device 30 equipped with the non-stop device 45 also comprises a removal table 48 making it easy to place the new packs 47 on the elevator 31.
• a removal table 48 may optionally be equipped with control, for example reading marks, to verify that the packet 47 is valid and correctly oriented.
• the introduction device 30 equipped with a non-stop device 45 can be fed in packets in many different ways, for example manually or by a robot.
• the figures 9 to FIG. 12 schematically show a particularly advantageous unstacking device 50, making it possible to form packets from a stack 51, and to place these packets on the deposit table 48.
• a stack 51 of plate elements is introduced with a conveyor not shown on a table 52.
• the stack is typically 2m high, but nothing prevents the use of piles of other heights.
• the example of unstacking device 50 shown in FIG. 9 to FIG. 12 comprises a clamp 53 comprising two motorized lateral jogging devices 54, a motorized rear jogging device 55, a fixed front jogging device 56, a motorized fork 57 and a battery separating device 58.
• the controller Upon removal from the table 52 of the stack 51, the height of the latter is measured by a sensor (not shown). The controller then decides how many packages of substantially similar sizes will be made. The last plates of the bottom of the pile 51 will be optionally evacuated as considered damaged by the transport.
• the package separation device 58 separates the future package on the top of the stack 51.
• the separation device 58 shown comprises a piston which pushes an inclined plane which raises the front edge of a plate element of the stack.
• the fork 57 can then be introduced under the package thus formed.
• This system with a single centered separation device is particularly suitable because it adapts to different stacks of plate elements that are not always flat, the plate elements may have a tiling.
• the package separation device 58 is a subset of the clamp 53, but this separation device may possibly be distinct from the clamp 53.
• the package is then transported over the depositing table 48, then released by the clamp 53 onto the deposit table 48, which will then transport the package to the elevator 31 when the latter is lowered while the device non-stop 45 will support the residual packet 32.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Sheets, Magazines, And Separation Thereof (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=55236813

Family Applications (1)

Country Status (6)

Family Cites Families (14)

• 2015
  • 2015-12-22 FR FR1563113A patent/FR3045585A1/fr not_active Withdrawn
• 2016
  • 2016-12-22 EP EP16822167.9A patent/EP3393947A1/de not_active Withdrawn
  • 2016-12-22 CN CN201680082309.7A patent/CN109071134A/zh active Pending
  • 2016-12-22 JP JP2018532197A patent/JP2019510707A/ja active Pending
  • 2016-12-22 WO PCT/EP2016/082361 patent/WO2017109062A1/fr active Application Filing
• 2018
  • 2018-06-18 IL IL260092A patent/IL260092A/en unknown

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