EP3052415B1 - Dispositif d'empilage et procédé de formation ininterrompue de piles de sachets fournis en continu dans une chaîne de sachets - Google Patents

Dispositif d'empilage et procédé de formation ininterrompue de piles de sachets fournis en continu dans une chaîne de sachets Download PDF

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Publication number
EP3052415B1
EP3052415B1 EP14762044.7A EP14762044A EP3052415B1 EP 3052415 B1 EP3052415 B1 EP 3052415B1 EP 14762044 A EP14762044 A EP 14762044A EP 3052415 B1 EP3052415 B1 EP 3052415B1
Authority
EP
European Patent Office
Prior art keywords
stack
stacking
bags
movement
transport
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.)
Active
Application number
EP14762044.7A
Other languages
German (de)
English (en)
Other versions
EP3052415A1 (fr
Inventor
Wolfgang Reichelt
Maik LAMPRECHT
Uwe Jansen
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.)
Syntegon Packaging Systems AG
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3052415A1 publication Critical patent/EP3052415A1/fr
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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
    • B65H45/00—Folding thin material
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • 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
    • B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
    • B65B5/06—Packaging groups of articles, the groups being treated as single articles
    • B65B5/061—Filled bags
    • 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
    • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
    • B65B63/04—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for folding or winding articles, e.g. gloves or stockings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3009—Arrangements for removing completed piles by dropping, e.g. removing the pile support from under the pile
    • B65H31/3018—Arrangements for removing completed piles by dropping, e.g. removing the pile support from under the pile from opposite part-support elements, e.g. operated simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3054—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers
    • B65H31/3063—Arrangements for removing completed piles by moving the surface supporting the lowermost article of the pile, e.g. by using belts or rollers by special supports like carriages, containers, trays, compartments, plates or bars, e.g. moved in a closed loop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3081—Arrangements for removing completed piles by acting on edge of the pile for moving it along a surface, e.g. by pushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • B65H37/06—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for folding
    • 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
    • B65H2701/191—Bags, sachets and pouches or the like

Definitions

  • a stacking device for the continuous formation of stacks from at least one bag of endless bags having at least one row of bags and / or continuously fed after each set number of bags, with at least one, at least during the formation of a stack in a direction parallel to a stacking layer direction Stacking movement of the stacking pad back and forth, with a bag feed means which deposits the at least one bag strand on the stacking pad in such a way that the bag strand bends and forms zigzag-shaped stacking layers due to the stacking movement after each number of bags forming a stacking layer, or that the bag strand forms in stacking layers due to the stacking movement the number of bags forming the stack layer is stacked with a matching bag orientation, and with at least one stack transport means for transporting the stack after reaching a fixed number of stack layers from the Area of influence of the stack movement has been proposed.
  • the invention is based on a stacking device for the continuous formation of stacks from at least one endless and / or continuously fed pouches having at least one row of pouches, with at least one pouch, at least during the formation of a stack in one to one Stacking layer direction, parallel stacking movement of the stacking back and forth, with a bag feed means that deposits the at least one bag strand on the stacking base in such a way that the bag strand kinks at least essentially due to the stacking movement after a number of bags forming a stacking layer and forms zigzag-shaped stacking layers or that the bag strand at least in the Essentially due to the stacking movement in stacking layers, the number of bags forming the stacking layer is matched with the same bag orientation, and with at least one stack transport means for transporting the stack after reaching a fixed number of stacking layers from the area of influence of the stacking movement.
  • a first drive unit is provided at least for driving the stack movement and a further drive unit is provided for driving at least one transport movement of at least one stack transport means.
  • a “bag strand” is to be understood in particular to mean a strand of coherent bags, which are preferably connected to one another at their ends with common sealing seams.
  • the sealing seams preferably have perforations in the middle between two bags in order to make it easier for a user to separate the bags.
  • the strand of bags can in particular be produced and filled on a flat bag and / or stick pack machine. Such strands of bags and packaging machines are known to the person skilled in the art.
  • the bags are preferably of flat design, that is to say their width and length are at least twice as large as their thickness perpendicular to a feed direction of the bag strand. Strands of bags or a strand of bags can have different types of bags.
  • a “bag row” is to be understood to mean a plurality of bags of a bag strand which are arranged one behind the other in the bag strand in the feed direction of the bag strand.
  • a “fixed number” is to be understood in particular as a number which is fixed in accordance with a desired stack configuration. The number can in particular be part of a parameter set that describes the stack to be formed by the stacking device. The parameter set can preferably be stored on a control unit of the stacking device or on a packaging machine having the stacking device. It may also be possible that the specified number is determined and / or varied by a user or an upstream process. It may be possible that the specified number is redefined for each stack and / or each stack position.
  • a “fixed number of bags” is to be understood in particular to mean that a number of bags, after which the strand of bags is cut, is fixed in accordance with the desired stack configuration.
  • the Specified number of bags, after which the at least one strand of bags is severed can in particular vary depending on the stack position and / or with each stack. In particular, in the case of a stack which has a plurality of bag strands, the bag strands can be severed according to different bag numbers. It may also be possible for a stack layer to have a plurality of bag strands in the stack layer direction. A stack position can be started with one strand of bags and ended with at least one further strand of bags. Different types of bags can advantageously be placed in a stack.
  • the specified number of stack layers of successive stacks varies and / or the number of stack layers of the stacks is determined anew before and / or during stack formation.
  • “continuously fed” is to be understood in particular to mean that a feed movement in which the bag strand is transported is uninterrupted, in particular free from standstill.
  • a feed speed, particularly caused by an upstream packaging process can preferably vary continuously.
  • a “stack layer direction” is to be understood in particular to mean a direction which is on average parallel to the row of bags or the rows of bags of the at least one strand of bags in a stack layer.
  • a “bag feeding means” is to be understood in particular to mean a device which feeds the bag strand at the feeding speed in the direction of the stacking base.
  • the bag feed means can have, for example, a band edge, pairs of rollers and / or other means which are suitable for feeding a strand of bags.
  • the bag feed means can have a deflection device, in particular at least one swivel plate, which is provided to deflect the bag strand in a direction transverse to the stack layer direction and transverse to the feed direction and / or a weight. It may be possible to form several stacks next to one another transversely to the stack layer direction and transversely to the feed direction and / or weight.
  • the deflection device can deflect the bag strand in such a way that it is placed on the stack currently being formed. Due to the stacking movement, the strand of bags can in each case bend after a number of bags forming a stacking layer and form zigzag-shaped stacking layers, or can be stacked in stacking layers with the number of bags forming the stacking layer with a matching bag orientation due to the stacking movement.
  • a deflection device in particular at least one swivel plate, can preferably be arranged in such a way that the kinking and / or stacking of the bag strand is supported in the formation of the stack layers. In particular, the deflection device to be provided to deflect the strand of bags in and against the direction of the stacking layers.
  • the deflection device together with the stacking movement of the stacking base, can cause the stack to kink and / or stack up in stacked layers.
  • the kinking and / or stacking can preferably take place at least essentially by the stacking movement.
  • “at least essentially” is to be understood in particular to mean that a relative movement of the bag strand with respect to the stacking base mainly results from the stacking movement.
  • the bag feed means can preferably have separating means, such as for example squeezing knives, in order to separate the bag strand according to the specified number of bags.
  • the strand of bags can be severed in an upstream process, in particular in a sealing process for forming sealed seams of the bags.
  • the individual stack layers of a stack can have the same number of bags. However, it is also possible to form stacks with stack layers that have a different number of bags. In particular, the number of bags can decrease with each stack layer or the stack layers can alternately have a larger and a smaller number of bags. In particular, the stack layers with a different number of bags can have an offset, in particular by half a bag length.
  • the stacking layers can be stacked in such a way that the center of the pouches of the pouches of one layer lies between the center of the pouches in the area of the sealing seams of the pouches of another layer.
  • the bags can be stacked particularly compactly.
  • stacking layers may also be stacked, in particular by half a bag width, transversely to the stacking layer direction and feed direction and / or weight.
  • long, narrow bags such as "stick packs” can be stacked in a particularly compact manner with an offset transverse to the stacking layer direction and feeding direction and / or weight.
  • zigzag stacking layers are to be understood in particular as stacking layers of a stack that is folded from a coherent zigzag-shaped strand of bags.
  • a stack with stack layers with "matching bag orientation” is to be understood in particular as a stack with stack layers in which the strand of bags is cut after each stack layer and the stack layers are stacked up in such a way that the bags are each stacked in a uniform orientation.
  • printed front sides of the bags can be oriented in the direction of a top side of the stack facing away from the weight.
  • a “front side” of a bag should in particular be understood to mean a side of the bag that leads to a product presentation is provided and in particular has a product name, a product brand or similar characteristics and which is to be presented to a customer first when opening a package containing the bags.
  • transport “from the area of influence of the stack movement” is to be understood in particular to mean that the stack movement for forming the next stack is no longer transferred to the stack. This can be done in that the stack is not in contact with the stacking pad or in that the other stacking pad is used to form the next stack and the stacking pad carrying the stack while it is in contact with the stack is free from the stacking movement of the next one Stack remains.
  • a first drive unit and a second drive unit continuous stack formation may be possible.
  • One drive unit can drive the stack movement, while a second drive unit drives the transport movement in order to transport a stack out of the area of influence of the stack movement.
  • a drive unit can drive the stacking movement for stacking a stack and subsequently the transport movement for transporting the stack of a first stacking unit and a first transport unit, while the further drive unit drives the stacking movement for forming the next stack and subsequently the transport movement for transporting the further stack drives another stacking unit and a further transport unit.
  • the string of bags can be fed continuously. Stopping the string of bags and / or an upstream process for producing the string of bags between the formation of two stacks can be avoided.
  • a control unit which is provided to determine a stroke and / or a speed of the stacking movement in at least one operating mode depending on a number of bags and / or a length of a stacking layer in the stacking layer direction, a feed speed of the bag strand and / or an achieved stacking height of the stack to control.
  • the stack movement can advantageously be adapted to the stack height reached. In particular, as the stack height increases, a distance between the bag feed means and the top of the stack facing the bag feed means can become smaller. An advantageous stroke of the stacking movement to form the next stacking layer can be larger as the distance becomes smaller.
  • the control unit can advantageously set the stacking movement. It is possible for the stack layers to have different bag strand lengths and / or bag numbers.
  • the number of bags, after which the strand of bags kinks to form a stacking layer can be influenced by the stroke and / or the speed of the stacking movement.
  • the stacking device can be particularly efficient and / or flexible. Stacks with stack layers with a different number of bags can be formed. Influences of the stack height and / or the distance from the top of the stack to the bag feed means can be compensated.
  • At least one of the drive units is provided for driving a stacking movement and a transport movement.
  • At least the first drive unit is preferably used to drive a first stacking movement and a first transport movement and the second drive unit is provided to drive a second stacking movement and a second transport movement.
  • the first and the second stacking movements and the first and the second transporting movements are preferably provided alternately to form a stack and a further stack.
  • the transport movement of a stack can advantageously take place independently of the stack movement of the next stack.
  • the stacking device advantageously has at least two stack supports and at least two stack transport means, stack supports and stack transport means each forming stack carriers which can be driven by a common drive unit.
  • the stacks can each be formed on the stack carrier and transported away from the stack carrier in a next step, while a next stack is formed on another stack carrier.
  • the stack carriers are driven by at least two independent drive units.
  • the stack carriers can be driven by a rotating linear motor system.
  • a circumferential guide can have a secondary part or preferably a primary part of the linear motor system.
  • the stack carriers can have primary parts or preferably secondary parts of the linear motor system and can be driven independently.
  • the stack carriers can be arranged on at least two independently driven, rotating elements, in particular belts or chains, and driven in one rotation.
  • a rotating element can preferably drive at least one, particularly preferably at least two stack carriers.
  • a rotating element can transport a stack to a stack transfer position by means of a stack carrier, and a further stack carrier in a direction opposite to the transport direction in which the stacks are transported away, to a stack formation area in which another stack is currently being driven on by a further rotating element Stack carrier is formed, transport the adjacent area.
  • the stack carriers are preferably formed in the transport direction by articulated and / or elastic segments. A deflection of the stack carriers at deflection points of the rotating linear motor system and / or the rotating elements by a radius can be simplified.
  • the further rotating element can meanwhile drive the stack carriers arranged on this rotating element in the stack movement, the stack being formed on the stack carrier, which is located in the stack formation area.
  • the rotating elements can alternately carry out the stack movement and form stacks on one of their stack carriers, which is located in the stack formation area, and transport stacks to the stack transfer position. Continuous stacking of stacks may be possible. It is also possible that, following the transport movement with which the stack is transported out of the stack formation area, the stack carriers carry out further movements. In particular, the stack carriers can be moved back and forth with a frequency that is higher than the stack movement in order to equalize the stack and / or bag of the stack and / or to reduce a stack height.
  • “equalizing” is to be understood in particular to mean that the contents packed in the bags are distributed evenly by the back and forth movement and / or that the stack layers are aligned in such a way that gaps in the stack are reduced. A maximum bag thickness of the bags can be reduced and / or a stack height can decrease.
  • the stack carriers can also move the stack in a movement synchronized with a further process step, in particular a printing process and / or a glue application.
  • the stack carriers and / or stop means of the stack carriers for a return transport of the stack carriers against the transport direction in which the stacks are transported are mounted on storage devices so that they can be pushed away and / or folded away from a transport region.
  • a “transport area” is to be understood in particular to mean an area which is used by further stack carriers and / or stacks during the stack formation and / or during the transport of stacks into the stack transfer position. It may be possible for stack carriers to move in the opposite direction to other stack carriers during return transport and to encounter them without collision. It may be possible that the stack carrier for the return transport from the transport area pushed away and / or folded away.
  • the stack supports of the stack carriers may also be possible for the stack supports of the stack carriers to be arranged in different levels and / or to be transferred to another level for the return transport, and for the lifting means of the stack carriers to be folded away or pushed away in such a way that the stack carrier which is intended for the return transport is is completely outside the transport area.
  • the stack carriers can advantageously be moved for the transport of stacks in the transport direction and for the return transport against the transport direction.
  • a circulation of the stack carrier can be omitted.
  • the stack carriers can preferably be driven by a flat linear motor system.
  • the stack carriers can have primary parts or preferably secondary parts of the linear motor system.
  • a guide unit can support the stack carriers and have a secondary part or preferably a primary part of the linear motor system.
  • the stack carriers can be driven independently by the linear motor system.
  • the stack carriers can be formed by two stop means, which are provided to limit the stack in each case at their opposite ends in the transport direction.
  • the sling means can each be driven independently.
  • the stop means can preferably each have primary parts or preferably secondary parts of the linear motor system. A distance between slings, which are provided to form a stack, can be changed.
  • the stop means which are provided to form a stack can preferably have stack support means, in particular interdigitated comb-like support extensions.
  • the stack support means can form stack supports.
  • a stack length can be changed by changing a spacing of stop means which are provided to form a stack.
  • the stacking device can be adapted to different lengths of stack layers.
  • the stack support means can be driven independently of the stop means.
  • the stack support means can have further primary parts or preferably secondary parts of the linear motor system. Distances between the slings and stacking supports can be set independently.
  • the stacking device can be particularly flexible.
  • the stop means of the stack carriers are mounted on storage devices so that they can be pushed away and / or folded away from the transport area of the stack in order to make it easier to push the stack off, in particular by means of a slide. Pushing and / or folding away the lifting means can further facilitate the circulation of the stack carriers at deflection points in the case of rotatingly driven stack carriers.
  • one of the drive units drives only the stacking movement or only the transport movement.
  • One of the drive units is preferably only intended to drive the stacking movement and one of the drive units is only intended to drive the transport movement.
  • a stack support can be driven by the one and a stack transport means can be driven by the further drive unit.
  • the stacking pad can execute stacking movements while the stack transport means transports finished stacks from the area of influence of the stacking movement to the stack transfer position. Continuous stacking can advantageously be possible.
  • the stack support be formed by a first belt element and the stack transport means by a further second belt element adjacent to the first belt element.
  • the band elements can adjoin one another with band ends of their band ends lying opposite one another.
  • One belt can carry out the stacking movement, while the second belt carries out the transport movement.
  • the first belt can interrupt the stack movement, briefly carry out a further transport movement in the transport direction and thus at least partially transfer the stack to the further belt.
  • the further belt transports the stack out of the area of influence of the stack movement of the first belt, while the first belt is driven again with the stack movement to form the next stack.
  • the stacking pad is formed by changing areas of the first band, each of which lies in the stacking area.
  • a period of time in which the first belt interrupts the stacking movement and carries out the further transport movement is preferably shorter than the period of time which an advance of the bag strand requires from the bag feed means with the feed movement to the stacking pad.
  • the bag feed means can have a storage function that makes it possible to briefly stop the continuously fed bag strand.
  • the further transport movement can already start the stack movement of the next stack, in that the bag strand is placed on the belt in the direction of the further transport movement and forms a first stack layer. Stopping the feed movement can be avoided. The stacking can take place continuously.
  • the stack transport means is intended to transport stacks from the stack formation area to a further transport unit.
  • the stack transport means can have a slide and / or gripper which grips the stack in the stack formation area on a side facing away from the transport direction and transports it to a further transport unit.
  • a “further transport unit” is to be understood in particular to mean a transport unit that takes over the stack and transports it to a next process step, such as in particular a further packaging process.
  • the stacking pad can carry out the stacking movement continuously. The stack can be transported out of the area of influence of the stack movement by the stack transport means. Continuous stacking may be possible. The stacking pad can carry out the stacking movement without interruption.
  • the stack support can form the stack transport means for transporting stacks and can be folded away under the stacks for transport in the direction of a weight and / or can be pulled away and / or pivoted away below the stack in the direction transverse to the weight.
  • the stacking pad can be designed as a trap door, in particular as a two-part trap door.
  • the stacking pad can execute the stacking movement to form the stack. Once the stack has been formed, the stacking pad can fold down, so that the weight falls through the opened trap door, which is designed as a stacking pad.
  • a slide or a similar suitable transport device is preferably arranged below the stacking base, which catches the falling stack and transports it to a further transport unit.
  • the stacking movement and the transporting movement, which pulls and / or folds away the stacking pad under the stack are preferably driven by the two separate drive units.
  • the bag feed means have a braking means which is intended to exert a braking force with at least one force component opposite to at least one direction of movement of the bag strand section in at least one operating state on at least one bag strand section of the bag strand.
  • a “bag strand section” of the bag strand is to be understood in particular to mean an end of the bag strand which is released onto the stack base in order to form a stack.
  • it can Separating means separate the section of bag strand from the strand of bag as soon as it comprises the number of bags intended for the stack to be formed.
  • a “direction of movement” of the bag strand is to be understood in particular to mean a direction of movement of the bag strand section at a contact point of the braking means with the bag strand caused by feeding the bag strand in the feed direction.
  • the braking means can preferably be arranged in the feed direction of the bag strand after the separating means.
  • the braking means can effectively delay a movement of the bag strand section in its direction of movement. In particular, it can be avoided that the bag strand section, after it has been separated from the bag strand, is released in an uncontrolled manner by the weight force and / or is dropped onto the stacking pad and / or falls onto the stacking pad at too high a speed.
  • the braking means is preferably mounted rotating about an axis.
  • the braking means can be designed as a rotating brush or, particularly preferably, as a roller.
  • the braking means can preferably be driven about its axis.
  • Drive means are particularly preferably provided to drive the braking means synchronously with the feed speed of the bag strand.
  • the separating means can preferably be formed by rotating crushing knives.
  • the squeezing knives and / or the braking means can preferably have a peripheral speed that is synchronous with the feeding speed.
  • the squeeze knives and / or the braking means can drive the bag string and / or the bag string section at the feed rate at the time the bag string is separated.
  • the braking means can preferably press onto the bag strand section with a pressing force against the swivel plate.
  • the pressing force can bring about an advantageous static friction between the bag strand section and the braking means.
  • the static friction between the braking means and the bag strand section can advantageously bring about the braking force.
  • the swivel plate can advantageously remain in a stack formation position during the stack formation. A distance between the brake means and the swivel plate during stack formation can be constant. A mounting of the brake means that can be moved back and forth with a movement of the swivel plate can be dispensed with.
  • the pivot plate can advantageously be pivoted from the stacking position into a discharge position. The discharge position can be provided to discharge defective bags into a waste container. In the eject position, the swivel plate can advantageously eject the bag strand section from the stacking device.
  • a packaging machine with a stacking device is also proposed.
  • the packaging machine can continuously form product stacks with the advantages mentioned.
  • a process for the continuous formation of stacks includes, in particular, that bags are continuously fed in at least one endless or at least one row of bags, or cut according to a specified number of bags, and are moved back and forth by the bag feed means to at least one, at least during the formation of a stack, in a stack movement parallel to a stack layer direction Moved stacking pad are placed so that the bag strand bends due to the stack movement after a number of bags forming a stack layer and forms zigzag-shaped stack layers, or that the bag strand is piled up in stack layers with the number of bags forming the stack layer with the same bag orientation and the stack with at least one Stack transport means for transporting the stack after reaching a fixed number of stack layers is brought out of the influence of the stack movement, a first drive unit driving the S tape movement and another drive unit drives a transport movement of at least one stack transport means.
  • the stacking device according to the invention is not intended to be limited to the application and embodiment described above.
  • the stacking device according to the invention can have a number that differs from a number of individual elements, components and units specified here in order to fulfill a function described here.
  • Figure 1 shows a schematic representation of a stacking device 10a for the continuous formation of stacks 12a from endless bags 18a having at least one, three bag rows 14a, continuous bag lines 16a, which are separated after a defined number of bags, with at least four bags during the formation of a stack 12a a stacking layer 24a, 24'a, which is parallel to a stacking layer direction 20a, with a bag feeding means 26a, which places the bag strand 16a on the stacking pad 24a, which is located in a stack formation area 62a, in such a way that the bag strand 16a respectively follows due to the stacking movement 22a kinks a number of bags forming a stacking layer 28a and forms zigzag-shaped stacking layers 28a, and with four stacking transport means 30a, 30'a for transporting the stack 12a after reaching a fixed number of stacking layers from the area of influence of the stacking movement 22a.
  • a first drive unit 32a is provided for driving the stacking movements 22a of two stacking pads 24a each. Furthermore, the first drive unit 32a is provided for driving transport movements 34a for transporting the stacks 12a through the two stack transport means 30a.
  • a second drive unit 32'a is for driving of transport movements 34'a for transporting the stacks 12a through the two stack transport means 30'a. Furthermore, the second drive unit 32'a is provided for driving stack movements 22'a of the two stacking pads 24'a.
  • the drive units 32a, 32'a are thus each provided to drive one of the stacking movements 22a, 22'a and one of the transport movements 34a, 34'a.
  • the stacking device 10a is part of a packaging machine 68a, which is only indicated here.
  • the bag strand 16a is discharged from the bag feed means 26a in the direction of a weight force 66a downward in a feed direction 70a in the direction of the stack formation area 62a.
  • the three rows of bags 14a of the bag strand 16a are separated, so that it forms three sub-strands. It is also possible for the rows of bags 14a to be coherent.
  • the bag feed means 26a has separating means (not shown in more detail) in order to cut the bag strand 16a transversely to the feed direction 70a after a fixed number of bags.
  • the number of bags can be identical or variable for each stack layer 28a.
  • 6 bags 18a each form a stack layer 28a, three bags 18a being arranged next to one another in rows of bags 14a transversely to the feed direction 70a and two bags 18a one behind the other in the feed direction 70a.
  • stack carriers 50a, 50'a form the four stack supports 24a, 24'a and the stack transport means 30a, 30'a, which are driven by the two drive units 32a, 32'a.
  • the drive units 32a, 32'a drive two rotating elements designed as belts 72a, 72'a.
  • the stack carriers 50a are arranged on the belt 72a and are driven by the drive unit 32a, the stack carriers 50'a are arranged on the belt 72'a and are driven by the drive unit 32'a.
  • the two stack carriers 50a and the two stack carriers 50'a are each offset on the respective belts 72a and 72'a by half a belt revolution.
  • the stack supports 24a, 24'a each have stop means 36a, 36'a, which the stacks 12a have on both sides of a transport direction 52a in a length 44a of one Limit and align the stacking layer 28a in the stacking layer direction 20a.
  • FIG. 1 there is currently a stack carrier 50a in the stack formation area 62a.
  • the stack carrier 50a is driven by the drive unit 32a with the stack movement 22a.
  • a stack 12a is formed on the stack base 24a of the stack carrier 50a.
  • the stack formation, as in Figure 1 are supported by a swivel plate 82a, which is moved back and forth in a swivel movement 84a and deflects the bag strand 16a in the stacking direction 20a. The deflection additionally increases a relative movement of the bag strand 16a to the stacking base 24a caused by the stacking movement 22a.
  • the further stack carrier 50a is located on a side of the rotating belt 72a opposite in the direction of the weight force 66a.
  • one of the stack carriers 50'a transports a stack 12a already formed on the stack support 24'a of the stack carrier 50'a in the transport movement 34a to a stack transfer position 74a.
  • the stack carriers 50a, 50'a with the stack supports 24a, 24'a and the stop means 36a, 36'a are formed by a plurality of articulated segments, not shown here, which are mounted on the belts 72a, 72'a.
  • the stack carrier 50'a is deflected in the area of the stack transfer position 74a.
  • the rear stop means 36'a in the transport direction 52a first dive downward in the direction of the weight 66a under the stack 12a.
  • a slide 76a pushes the stack 12a from the stack transfer position 74a towards a further transport unit 64a and / or to a downstream process step.
  • the stop means 36'a at the front in the transport direction 52a can also be submerged under the stack 12a in order to push the stack 12a away by the slide 76a in order to facilitate pushing off.
  • the geometry of the front stop means 36'a in the transport direction 52a and the slide 76a is designed such that the slide 76a can penetrate the stop means 36'a, so that the front stop means 36'a in the transport direction 52a does not submerge for pushing is required. As a result, the remaining parts of the stack carrier 50'a are deflected. These process steps are then repeated with the stack carrier 50a carrying the next stack 12a.
  • the further stack carrier 50'a is offset by half a length of the belt 72'a and adjoins the stack formation area 62a against the transport direction 52a.
  • the stack carrier 50a is driven in the transport movement 34a and the stack carrier 50'a is moved into the stack formation area 62a, where it is driven with the stack movement 22a and the next stack 12a is formed.
  • the stack movement 22a can also be controlled and the bag strand 16a can also be separated in such a way that the bag strand 16a is piled up in stack layers 28a with the number of bags forming the stack layer 28a with the same bag orientation due to the stack movement 22a.
  • a control unit 38a which controls the drive units 32a and 32'a.
  • the control unit 38a controls a stroke 40a and a speed 42a of the stacking movement 22a depending on the number of bags and the length 44a of a stack layer 28a in the stack layer direction 20a, a feed speed 46a of the bag strand 16a and an achieved stack height 48a of the stack 12a.
  • the stroke 40a of the stack movement 22a increases, the greater the stack height 48a and the smaller the remaining distance between stack 12a and bag feed means 26a.
  • FIG. 2 shows a stacking device 10b in a second embodiment.
  • the stacking device 10b of the second exemplary embodiment differs from the stacking device 10a in particular in that two stack carriers 50b, 50'b are each arranged on a linear motor 80b, 80'b of a linear motor system 78b.
  • the linear motors 80b, 80'b form drive units 32b, 32'b and can be driven independently.
  • the stack carriers 50b, 50'b are displaceably mounted in the direction of a weight 66b and stop means 36b, 36'b are arranged on storage devices 54b on stacking supports 24b, 24'b so that the stack carriers 50b, 50'b are parallel to one another Transport direction 52b folded away stop means 36b, 36b 'from a transport area 56b in which stacks 12b are transported can be pushed away.
  • a stack 12b is formed on the stack carrier 50b, while the stack carrier 50'b delivers a further stack 12b in a stack transfer position 74b, supported by a slide 76b, to a further transport unit 64b.
  • the stack carrier 50'b is then moved counter to the transport direction 52b into a position in which it adjoins a stack formation area 62b on the side opposite the transport direction 52b.
  • the stop means 36'b are folded away into a position parallel to the transport direction 52b and the stack carrier 50'b out of the Transport area 56b pushed in the direction of weight 66b.
  • the stop means 36'b are then opened again and the stack carrier 50'b is pushed back against the weight 66b, and the stack carrier 50'b is moved into the stack formation area 62b to form the next stack 12b as soon as the stack carrier 50b opens the stack formation area 62b completed stack 12b formed from the stack carrier 50b.
  • the stack carrier 50b, 50'b which is located in the stack formation region 62b, is driven with a stack movement 22b, as in the first exemplary embodiment.
  • FIG. 3 shows a stacking device 10c in a third embodiment.
  • the stacking device 10c of the third exemplary embodiment differs from the stacking device 10a in particular in that a stacking movement 22c and a transport movement 34c are driven by independent drive units 32c, 32'c.
  • a stacking pad 24c and a stacking means 30c are formed by two adjoining band elements 58c, 60c.
  • the belt element 58c forms a stacking belt and the belt element 60c forms a conveyor belt.
  • the belt element 58c is driven in the stacking movement 22c.
  • the belt element 58c is briefly moved in the direction of the belt element 60c until a stack 12c which has just been formed rests on the belt element 60c far enough that the belt element 60c takes over the stack 12c and in the transport movement 34c to one Transport unit 64c transported.
  • the belt element 58c is driven again with the stacking movement 22c.
  • the next stack 12c is formed in the area of the band element 58c which has now come to rest in a stationary stack formation area 62c.
  • This region of the band element 58c forms the stack base 24c, the region being able to be formed in each case on changing sections of the band element 58c. A return movement of the band element 58c is therefore not necessary.
  • the interruption of the stack movement 22c for moving the stack 12c to the belt element 60c is therefore short enough that a bag feed means 26c for stack formation can continuously deliver a bag strand 16c.
  • FIG. 4 shows a stacking device 10d in a fourth embodiment.
  • the stacking device 10d of the fourth exemplary embodiment differs from the stacking device 10c of the third exemplary embodiment in particular in that a stack transport means 30d formed by a slide 76d is provided for transporting stack 12d from a stack formation area 62d to a further transport unit 64d.
  • a stacking base 24d is formed by a plate which is driven to oscillate in a stacking movement 22d. If a stack 12d with a fixed number of stack layers is stacked, the separately driven slide 76d pushes the stack 12d in a transport movement 34d onto the further transport unit 64d designed as a belt. At the same time, the formation of the next stack 12d begins on the stack support 24d.
  • the stacking base 24d is mounted displaceably in the direction of a weight 66d.
  • the stack support 24d is shifted with each newly formed stack layer 28d by a height of the stack layer 28d formed in the direction of the weight 66d.
  • a distance between a stack top of the stack 12d and a bag feed means 26d can remain constant so that conditions under which a bag strand 16d kinks in a zigzag fashion remain unchanged.
  • FIG. 5 shows a stacking device 10e in a fifth embodiment.
  • the stacking device 10e of the fifth exemplary embodiment differs from the stacking device 10d of the fourth exemplary embodiment in particular in that a stacking support 24e forms a stack transport means 30e for transporting stacks 12e and is mounted so that it can be folded away under the stacks 12e for transport in the direction of a weight 66e.
  • the stack support 24e is moved in a stacking movement 22e.
  • the stacking base 24e which is divided along a center line parallel to the stacking movement 22e, is folded down on both sides in a transport movement 34e and thus forms the stack transport means 30e for transporting the stack 12e in the direction of the weight 66e. Due to the weight force 66e, the stack 12e falls on a further transport means 64e and is transported by this to a next process step. Optionally, the stack 12e can fall into a container arranged below the stack support 24e and / or the further transport means 64e can transport containers into which the stack 12e falls. The stacking pad 24e is then folded back so that a next stack 12e can be formed.
  • the transport movement 34e is sufficiently fast that a bag feed means 26e can continuously deliver a bag strand 16e for stack formation.
  • the stacking movement 22e is driven independently by a drive unit 32e and the transport movement 34e is driven by a drive unit 32'e.
  • the stacking base 24e can be mounted displaceably in the direction of the weight 66e.
  • FIG. 6 shows a schematic representation of a bag feed means 26f of a stacking device 10f for the continuous formation of stacks 12f in a sixth embodiment.
  • the bag feed means 26f differs from the bag feed means 26a-e of the previous exemplary embodiments in particular in that it has a braking means 86f which is provided, in at least one operating state, for braking force 90f with at least one direction of movement 92f on at least one bag strand section 88f of a bag strand 16f of the bag strand section 88f to exert an opposite force component.
  • the braking means 86f can effectively prevent that the bag strand section 88f separated by separating means 96f falls onto the stack 12f or a stacking base 24f in an uncontrolled manner.
  • the bag feed means 26f can advantageously be used in the stacking devices 10a-e instead of the bag feed means 26a-e described in the exemplary embodiments.
  • the bag strand 16f is transported between two driven transport rollers 94f in a feed direction 70f at a feed speed 46f in the direction of a stack formation area 62f.
  • the bag strand 16f is subsequently guided between two rotating separating means 96f, each of which has a squeezing knife 98f in its circumference.
  • the separating means 96f separate the bag strand section 88f from the bag strand 16f as soon as it has reached a desired number of bags for the stack 12f.
  • the brake means 86f has a rubberized brake roller 100f which is driven by a belt drive 102f at the same peripheral speed as the transport rollers 94f.
  • a pivot plate 82f In the operating state shown, in which stacks 12f are formed, a pivot plate 82f is in a stack formation position 104f. In contrast to the swivel plate 82a-e of the previous exemplary embodiments, the swivel plate 82f remains in this position. Should e.g. defective bags 18f are removed from the stacking device 10f, the pivot plate 82f can be pivoted into a discharge position, not shown here, in which the bag strand section 88f is directed in the direction of a waste container.
  • the brake roller 100f is arranged on a side of the bag strand section 88f opposite the swivel plate 82f in the stacking position 104f at a distance 106f which is somewhat smaller than an average bag thickness of the bags 18f.
  • the brake roller 100f thus presses the bags 18f of the bag strand section 88f at a contact point 108f of the brake roller 100f with a pressure force against the swivel plate 82f.
  • the rubber coating of the brake roller 100f causes fluctuations in the bag thickness to be compensated for.
  • the brake roller 100f can be spring-loaded in the direction of the distance 106f.
  • the brake roller 100f can exert the braking force 90f on the bag strand section 88f. If the bag strand section 88f is accelerated by a weight force 66f after it has been separated from the bag strand 16f by the separating means 96f, the brakes Brake roller 100f pulls off the bag strand section 88f by the braking force 90f in such a way that it moves in the direction of movement 92f synchronously with the transport rollers 94f at the feed speed 46f. The braking force 90f can also reverse its direction and accelerate the bag strand section 88f should it become slower than the feed speed 46f.
  • the brake roller 100f can be driven with a drive which is independent of the drive of the transport rollers 94f. It may also be possible that when the stack is formed, the swivel plate 82f is swung back and forth in a swivel movement, as in the previous exemplary embodiments shown.
  • the brake means 86f has bearing means which allow the brake roller 100f to be moved along with the pivoting movement of the pivot plate 82f in such a way that the distance 106f, at least when the bag strand section 88f is separated from the bag strand 16f, is small enough that the brake roller 100f the braking force 90f can exert on the bag strand section 88f.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pile Receivers (AREA)
  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Claims (12)

  1. Dispositif d'empilage pour une formation continuelle des piles (12a-f) de sachets (18a) fournis en continu dans au moins une chaîne de sachets (16a ; c-f) comprenant au moins une file de sachets (14a), qui est sans fin et/ou est respectivement découpée suivant un nombre défini de sachets,
    avec au moins un support de piles (24a-f, 24'a ; b) qui est remué dans un mouvement d'empilage (22a-e, 22'a) va-et-vient, qui est parallèle à une direction de couches d'empilement (20a) au moins pendant la formation d'une pile (12a-f), avec un moyen d'alimentation de sachets (26a- ; f) déposant l'au moins une chaîne de sachets (16a ; d-f) sur le support de piles (24a-f, 24'a ; b) de telle manière qu', au moins sensiblement en raison du mouvement d'empilage (22a-e), la chaîne de sachets (16a ; d-f) se plie respectivement suivant un nombre de sachets formant une couche d'empilement (28a ; c-d) et forme des couches d'empilement (28a ; c-d) en forme de zigzag, ou qu', au moins sensiblement en raison du mouvement d'empilage (22a-e, 22'a), la chaîne de sachets (16a ; d-f) est empilée en couches d'empilement (28a ; c-d) avec le nombre de sachets formant la couche d'empilement (28a ; c-d) et ayant la même orientation de sachets,
    et avec au moins un moyen à transport de piles (30a ; c-d) pour un transport des piles (12a-f) hors d'une zone d'influence du mouvement d'empilage (22a-e, 22'a) après une réalisation d'un nombre défini de couches d'empilement,
    avec une première unité d'entraînement (32a-e, 32'a, b), configurée pour un entraînement d'au moins un mouvement d'empilage (22a-e),
    et avec une unité d'entraînement de plus (32'a-e, 32a ; b) configurée pour un entraînement d'au moins un mouvement de transport (34a-e, 34'a) d'au moins un moyen à transport de piles (30a-e, 30'a, b).
  2. Dispositif d'empilage selon la revendication 1,
    caractérisé par une unité de commande (38a) configurée pour commander, dans au moins un mode d'opération, en fonction au moins d'un nombre de sachets et/ou d'une longueur (44a) d'une couche d'empilement (28a) en direction de couches d'empilement (20a), d'une vélocité d'alimentation (46a ; 46f) de la chaîne de sachets (16a) et/ou d'une hauteur d'empilement atteinte (48a ; 48f) de la pile (12a ; 46f), un levage (40a) et/ou une vélocité (42a) du mouvement d'empilage (22a, 22'a).
  3. Dispositif d'empilage selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce qu'au moins une des unités d'entraînement (32a-b, 32'a, b) est configurée pour un entraînement d'un mouvement d'empilage (22a, b, 22'a) et d'un mouvement de transport (34a, b, 34'a).
  4. Dispositif d'empilage selon l'une quelconque des revendications précédentes,
    caractérisé par au moins deux supports de piles (24a ; b, 24'a ; b) et au moins deux moyens à transport de piles (30a ; b, 30'a ; b),
    des supports de piles (24a ; b, 24'a ; b) et des moyens à transport de piles (30a ; b, 30'a ; b) formant des porteurs de piles (50a ; b, 50'a ; b) qui sont respectivement entraînables par une unité d'entraînement commune (32a ; b, 32'a ; b).
  5. Dispositif d'empilage selon la revendication 4,
    caractérisé en ce que pour un transport-retour des porteurs de piles (50b, 50'b) contre une direction de transport (52b), les porteurs de piles (50b, 50'b) et/ou des moyens d'aboutement (36b, 36'b) des porteurs de piles (50b, 50'b) sont supportés sur un dispositif de support (54b) de telle manière qu'ils peuvent être écartés en poussant et/ou en pliant.
  6. Dispositif d'empilage au moins selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce qu'une des unités d'entraînement (32c-e, 32'c-e) entraîne seulement le mouvement d'empilage (22c-e) ou seulement le mouvement de transport (34c-e).
  7. Dispositif d'empilage selon la revendication 6,
    caractérisé en ce que le support de piles (24c) est formé d'un premier élément de bande (58c) et le moyen à transport de piles (30c) est formé d'un autre deuxième élément de bande (60c) jouxtant le premier élément de bande (58c).
  8. Dispositif d'empilage au moins selon la revendication 6,
    caractérisé en ce que le moyen à transport de piles (30d) est configuré pour transporter des piles (12d) d'une zone de formation de piles (62d) à un moyen d'acheminement ultérieur (64d).
  9. Dispositif d'empilage au moins selon la revendication 6,
    caractérisé en ce que le support de piles (24e) forme le moyen à transport de piles (30e) pour un transport de piles (12e), et est supporté de telle manière qu'il peut être rabatté au-dessous des piles (12e) et/ou peut être retiré et/ou re-pivoté au-dessous des piles (12e) pour le bût d'un transport en direction d'une force de poids (66e).
  10. Dispositif d'empilage selon l'une quelconque des revendications précédentes,
    caractérisé en ce que le moyen d'alimentation de sachets (26f) comporte un moyen de freinage (86f) qui est prévu, en au moins un état d'opération, à exercer sur au moins une section de chaîne de sachets (88f) de la chaîne de sachets (16f) une force de freinage (90f) ayant au moins un composant-force opposé à une direction de mouvement (92f) de la section de chaîne de sachets (88f).
  11. Machine à emballage (68a) avec un dispositif d'empilage (10a-e) selon l'une quelconque des revendications précédentes.
  12. Procédé pour une formation continuelle de piles (12a-e) de sachets (18a) fournis en continu dans au moins une chaîne de sachets (16a ; d-e) comprenant au moins une file de sachets (14a), qui est sans fin et/ou est respectivement découpée suivant un nombre défini de sachets,
    où ladite chaîne de sachets (16a ; d-e) est déposée, par le biais d'un moyen d'alimentation de sachets (26a-d), sur au moins un support de piles (24a-e, 24'a ; b) qui est mue, au moins pendant la formation d'une pile (12a-e), de manière va-et-vient, dans un mouvement d'empilage (22a-e, 22'a) parallèle à une direction de couches d'empilement (20a), et est déposée sur le support de piles (24a-e, 24'a ; b) de telle manière qu', en raison du mouvement d'empilage (22a-e, 22'a), la chaîne de sachets (16a, d-e) se plie respectivement suivant un nombre de sachets formant une couche d'empilement (28a ; c ; d) et forme des couches d'empilement (28a ; c ; d) en forme de zigzag ou qu', en raison du mouvement d'empilage (22a-e, 22'a), la chaîne de sachets (16a ; d ; e) est empilée en couches d'empilement (28a ; c ; d) avec le nombre de sachets formant la couche d'empilement (28a ; c ; d) et ayant la même orientation de sachets, et que, suivant une réalisation d'un nombre défini de couches d'empilement, la pile (12a-e) est transportée hors d'une zone d'influence du mouvement d'empilage (22a-e) par le biais d'au moins un moyen à transport de piles (30a-e, 30'a ; b) pour un transport des piles (12a-e), où une première unité d'entraînement (32a-e, 32'a ; b) entraîne le mouvement d'empilage (22a-e) et une unité d'entraînement de plus (32'a-e, 32a ; b) entraîne un mouvement de transport (34a-e, 34'a) d'au moins un moyen à transport de piles (30a-e, 30'a ; b).
EP14762044.7A 2013-09-30 2014-09-12 Dispositif d'empilage et procédé de formation ininterrompue de piles de sachets fournis en continu dans une chaîne de sachets Active EP3052415B1 (fr)

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DE102013219755.1A DE102013219755A1 (de) 2013-09-30 2013-09-30 Stapelvorrichtung
PCT/EP2014/069563 WO2015043987A1 (fr) 2013-09-30 2014-09-12 Dispositif d'empilage

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EP3052415B1 true EP3052415B1 (fr) 2020-03-25

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US (1) US20160214827A1 (fr)
EP (1) EP3052415B1 (fr)
JP (1) JP6307598B2 (fr)
CN (1) CN105593150B (fr)
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WO (1) WO2015043987A1 (fr)

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DE102013219755A1 (de) 2015-04-02
JP2016536224A (ja) 2016-11-24
JP6307598B2 (ja) 2018-04-04
WO2015043987A1 (fr) 2015-04-02
US20160214827A1 (en) 2016-07-28
CN105593150B (zh) 2019-04-23
EP3052415A1 (fr) 2016-08-10

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