WO2005100163A1 - Chaine de remplissage et de scellage de sachets et chargeur pour la distribution de sachets - Google Patents

Chaine de remplissage et de scellage de sachets et chargeur pour la distribution de sachets Download PDF

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Publication number
WO2005100163A1
WO2005100163A1 PCT/AU2005/000504 AU2005000504W WO2005100163A1 WO 2005100163 A1 WO2005100163 A1 WO 2005100163A1 AU 2005000504 W AU2005000504 W AU 2005000504W WO 2005100163 A1 WO2005100163 A1 WO 2005100163A1
Authority
WO
WIPO (PCT)
Prior art keywords
pouches
compartment
magazine
stack
drawer
Prior art date
Application number
PCT/AU2005/000504
Other languages
English (en)
Inventor
Robert James Laing
Original Assignee
Pak Technologies Group Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2004902005A external-priority patent/AU2004902005A0/en
Application filed by Pak Technologies Group Pty Ltd filed Critical Pak Technologies Group Pty Ltd
Publication of WO2005100163A1 publication Critical patent/WO2005100163A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/02—Devices for feeding articles or materials to conveyors
    • B65G47/04—Devices for feeding articles or materials to conveyors for feeding articles
    • B65G47/06—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
    • B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G25/00—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement
    • B65G25/04—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having identical forward and return paths of movement, e.g. reciprocating conveyors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/90—Devices for picking-up and depositing articles or materials
    • B65G47/91—Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers
    • B65G47/915—Devices for picking-up and depositing articles or materials incorporating pneumatic, e.g. suction, grippers provided with drive systems with rotary movements only

Definitions

  • the present invention relates to a filling and sealing line for pouches and to a magazine for delivering pouches to the line.
  • the invention has particular, but not exclusive, application to a filling and heat sealing line for filling pouches with food products .
  • Doy pouches are generally flat when in a supplied condition, and generally comprise front and rear panels which are joined at the sides. The bottoms of the panels are joined by a gusset and the top of the pouch remains open. After the pouch has been filled with product, the top is closed, such as in a heat sealing operation .
  • Conventional lines for indexing pouches through a number of operating stations where the pouches are filled and sealed generally comprise an indexing mechanism for indexing the pouches sequentially by a unit indexing distance.
  • the indexing mechanism is arranged for reciprocating movement wherein it can grip one or more pouches , move the one or more pouches the indexing distance, and then release the pouches so that the indexing mechanism can return for the next indexing movement.
  • the pouches are released, they are held in place by a holding mechanism.
  • such mechanisms deliver a number of pouches which equates to the indexing distance which the indexing mechanism moves .
  • the indexing distance corresponds to two pouches, and therefore the pouches are delivery in pairs usually by a robot mechanism to the indexing mechanism.
  • the indexing mechanism then grips the pair of pouches and by reciprocating movement and holding movement by the holding mechanism, pairs of pouches are indexed along the line.
  • One problem with packaging food in doy pouches is that the pouches are more difficult to handle than cylindrical type containers because they are not self-supporting. Furthermore, because of the gusset configuration at the bottom of the pouch, the thickness of the bottom of the pouch is greater than at the top, thereby making it difficult to stack a large number of the pouches one above the other for automatic delivery into a filling machine.
  • a magazine In order to operate efficiently, a magazine needs to be easy to refill while a heat filling and sealing line is operating and whilst a robot is collecting pouches.
  • the ability to reload a magazine with fresh stacks of pouches in an efficient manner greatly improves the throughput of the filling and sealing line.
  • the pouches in order for the pouches to be properly located for collection by a robot, it is necessary that the pouches be pushed in a magazine so that they take up a predetermined position ready for collection. In some instances, frictional contact between a stack of pouches in a magazine can result in the pouches not being pushed sufficiently far forward in the magazine for collection by a robot.
  • the object of the first aspect of the invention is to provide a line for transporting pouches which can enable a delivery mechanism to operate at a slower speed than the indexing mechanism without sacrificing product throughput along the line.
  • a first aspect of the invention may therefore be said to reside in a line for transporting pouches, comprising: a holding mechanism for holding the pouches ; an indexing mechanism for indexing the pouches along the line; a drive for reciprocating the indexing mechanism so the indexing mechanism can move pouches a unit indexing distance during each reciprocating cycle; a delivery mechanism for delivering a plurality of pouches greater than that corresponding to the unit indexing distance; a secondary holding device for independent operation relative to the holding mechanism; and wherein, in use, the delivery mechanism delivers the plurality of pouches to the indexing mechanism so the pouches are gripped by the indexing mechanism and moved a first unit indexing distance whereupon at least one of the pouches is gripped by the secondary holding device, and at least one of the pouches is gripped by the holding mechanism, and whereupon the indexing mechanism releases the pouches and reciprocates back in the opposite direction whereupon the indexing mechanism again grips the plurality of pouches so that the holding mechanism and second holding
  • the indexing mechanism is able to undergo more than one (such as two) indexing unit distance movements for each one delivery of pouches by the delivery mechanism.
  • the delivery mechanism need operate only at a fraction of the speed (such as half the speed) of the indexing mechanism whilst maintaining the throughput of the line because the line is supplied with more pouches than that corresponding to the indexing movement during each delivery by the delivery mechanism.
  • the independent operation of the secondary holding device enables pouches to be effectively held for movement into the indexing mechanism, and then be actuated independently of the holding mechanism so the secondary holding device is ready to receive a further pouch or set of pouches whilst the holding mechanism holds the pouches .
  • the indexing mechanism performs two indexing movements for each delivery of pouches by the delivery mechanism so the number of pouches delivered each time by the delivery mechanism is twice the indexing unit distance.
  • the number of pouches could be, say three times the number which equates to the indexing distance, and further reciprocating cycle of the indexing mechanism could take place between the further and still further indexing distance movements to empty the secondary holding device, and so on.
  • the drive for reciprocating the indexing mechanism is a reciprocating drive which moves the indexing mechanism from an open position to a clamping position, and then moves the indexing mechanism from a starting position a unit indexing distance, the drive then being for opening the indexing mechanism and reciprocating the indexing mechanism back in the opposite direction to the starting position so the indexing mechanism is again closed to clamp the plurality of pouches and move the indexing mechanism a unit indexing distance to advance the pouches along the line.
  • the indexing mechanism comprises a pair of beams , each of the beams including a plurality of pins so that when the beams are drawn together, the pins of each beam move together to clamp pouches between respective pins.
  • the holding mechanism includes a pair of substantially parallel beams for movement towards and away from one another, the beams each including a plurality of pins so that when the beams are brought together, the pins of respective beams are able to clamp pouches to thereby hold the pouches .
  • the drive is also for moving the holding mechanism so the holding mechanism is moveable between an open position in which the pouches are not held by the holding mechanism so the pouches can be indexed along the line by the indexing mechanism, and a closed position in which the pouches are held by the holding mechanism to allow the indexing mechanism to release the pouches and reciprocate back to a starting position.
  • the drives can take a plurality of different forms including chain drives , cam operated devices , hydraulic or pneumatic devices and the like.
  • the drive comprises a cam mechanism for moving the holding mechanism and the indexing mechanism by way of a cam follower of the cam mechanism following a cam track of the cam mechanism.
  • the secondary holding device is mounted on the holding mechanism and comprises a pair of clamp jaws.
  • each clamp jaw is provided with an actuator for causing clamping of the clamp jaws or selectively opening the clamp jaws independent of the holding mechanism.
  • the indexing mechanism includes a pair of gripping bars for receiving the plurality of pouches from the delivery mechanism, so that when the indexing mechanism is indexed a unit indexing distance, the gripping bar moves the plurality of pouches so that at least one of the pouches is in registry with the secondary holding device, and at least one of the pouches is in registry with the holding mechanism so the pouches are gripped by the secondary holding device and the holding mechanism, and whereupon upon a second cycle of the drive to again index the indexing mechanism a unit indexing distance, the pouches held by the secondary holding device and the pouches held by the holding mechanism are moved a unit distance so that the pouches which were held by the secondary holding device are now in registry with the holding mechanism, and the pouches which were held by the holding mechanism are moved along the holding mechanism so that all of the plurality of pouches can then be gripped by the holding mechanism.
  • the delivery mechanism comprises a robot and a magazine having a plurality of compartments so that the robot is able to move one pouch from each of the plurality of compartments to thereby deliver the plurality of pouches .
  • the delivery mechanism could be in the form of a machine other than a robot including hydraulic rams, lifting devices or the like.
  • the gripping bars are connected to the holding mechanism by support rods which include a turnbuckle so that when the bars are moved to the clamping position, the support rods and turnbuckles enables a slight degree of relative movement of the bars if necessary to properly clamp the pouches .
  • the bars may also be pivotally connected to the indexing mechanism to facilitate slight relative movement to properly clamp the pouches.
  • the actuator for independently operating the secondary holding device comprises pneumatic or hydraulic cylinder and ram assemblies .
  • a second aspect of the invention relates to a magazine for holding pouches for supply to the line.
  • the object of this aspect of the invention is to facilitate proper location of the pouches for collection by a robot.
  • This aspect of the invention may be said to reside in a magazine for storing pouches for delivery to a line for transporting the pouches, the magazine comprising: at least one compartment for receiving a stack of the pouches, the at least one compartment having an open front through which an end pouch of the stack of pouches can be removed from the magazine; and biasing means for biasing the pouches within the compartment to a predetermined location in the compartment so the pouches are positioned at a desired location.
  • an automatic mechanism such as a robot is able to properly g ⁇ 'ip an deliver the pouches to the line because the pouches are properly positioned for collection by the robot.
  • the compartment is generally rectangular in cross-section having first, second, third and fourth side walls which define four corners.
  • the biasing means comprises a first spring arranged adjacent one of the side walls, and a second spring arranged adjacent an adjacent side wall to said one of the side walls, so that the first and second springs bias the pouches into one of the corners of the compartment .
  • the magazine includes a plurality of compartments .
  • the or each compartment is provided with a first pouch stack biasing member and an independent second stack biasing member for biasing the stack of pouches to a front of the compartment, the first and second pouch stack biasing members being able to independently bias portions of the stack to thereby accommodate different thickness of the stacks produced by virtue of the different thickness of the pouches so that the pouch at the front of the stack is substantially flat to facilitate proper pickup by a robot.
  • first and second pouch stack biasing members comprise hydraulic or pneumatic cylinder and ram assemblies .
  • the biasing pressure of the pouch stack biasing members is independently controllable to provide different biasing pressures to overcome different degrees of friction as the stack is pushed towards the front of the compartment .
  • the at least one compartment is closed by a door to provide access to the compartment so that a stack of pouches can be located in the compartment by passing the compartment through the open door in a direction substantially perpendicular to the direction of bias and movement of the stack of pouches provided by the pouch stack biasing members .
  • each compartment has a peripheral flange at the front of the compartment for holding the stack of pouches in the compartment until one of the pouches is collected by a robot and pulled through the front of the compartment passed the peripheral flange.
  • the plurality of compartments are provided in a drawer which can be moved from a delivery position at which pouches are deliverable from the magazine, to an open position to facilitate reloading of pouches into the compartment.
  • each drawer including at least one said compartment.
  • locking means is provided for selectively locking the drawer in the delivery position to prevent movement of the drawer and therefore the compartment when pouches are being delivered from the magazine.
  • the locking mechanism comprises a pin provided on the drawer or on a fixture relative to the drawer and a hole provided on the other of the drawer or the fixture so the pin can locate in the hole to thereby lock the drawer.
  • a further aspect of the invention has for its object a magazine which is able to accommodate pouches having various thickness portions so that a pouch at the end of a stack is presented in a substantially flat orientation for pickup by a robot.
  • This aspect of the invention therefore provides a magazine for storing pouches for delivery to a line, the magazine comprising: at least one compartment for storing a stack of pouches, the at least one compartment having an open front through which an end pouch of the stack of pouches can be removed; a first pouch stack biasing member for biasing a first location of the stack of pouches to push the pouches towards a front of the compartment; a second pouch stack biasing member for biasing a second portion of the stack of pouches to push the pouches towards the front of the compartment; and the first and second pouch stack biasing members being independently operable to bias the pouches towards the front of the compartment and accommodate different thicknesses of the pouches at various locations of the pouches so that the end pouch of the stack adjacent the front of the compartment is held in a substantially flat orientation for collection by a pickup device.
  • pouches which have different thicknesses at different parts of the pouches when the pouches are in blank or flattened form, can be stacked and located in the compartment and the pouches pushed to the front of the compartment with the different thickness of the stack being accommodated by the two pouch stack biasing members .
  • This enables the pouch at the end of the stack to be maintained in a flat orientation for easy pickup by a pickup device such as a robot.
  • each compartment could be provided with more than two such members if desired.
  • the compartment is generally rectangular in cross-section having first, second, third and fourth side walls which define four corners .
  • the biasing means comprises a first spring arranged adjacent one of the side walls, and a second spring arranged adjacent an adjacent side wall to said one of the side walls, so that the first and second springs bias the pouches into one of the corners of the compartment.
  • the magazine includes a plurality of compartments .
  • first and second pouch stack biasing members comprise hydraulic or pneumatic cylinder and ram assemblies.
  • the biasing pressure of the pouch stack biasing members is independently controllable to provide different biasing pressures to overcome different degrees of friction as the stack is pushed towards the front of the compartment .
  • the at least one compartment is closed by a door to provide access to the compartment so that a stack of pouches can be located in the compartment by passing the compartment through the open door in a direction substantially perpendicular to the direction of bias and movement of the stack of pouches provided by the pouch stack biasing members .
  • each compartment has a peripheral flange at the front of the compartment for holding the stack of pouches in the compartment until one of the pouches is collected by a robot and pulled through the front of the compartment passed the peripheral flange.
  • the plurality of compartments are provided in a drawer which can be moved from a delivery position at which pouches are deliverable from the magazine, to an open position to facilitate reloading of pouches into the compartment .
  • each drawer including at least one said compartment.
  • locking means is provided for selectively locking the drawer in the delivery position to prevent movement of the drawer and therefore the compartment when pouches are being delivered from the magazine .
  • the locking mechanism comprises a pin provided on the drawer or on a fixture relative to the drawer and a hole provided on the other of the drawer or the fixture so the pin can locate in the hole to thereby lock the drawer.
  • a further aspect of the invention has for its object a magazine which enables easy reloading of a stack of pouches .
  • This invention in a further aspect also therefore provides a magazine for storing pouches for delivery to a line, comprising: at least one compartment for containing a stack of the pouches , the compartment having an open front through which the pouches can be collected by a pick up device; at least one pouch stack biasing member for biasing the stack of pouches towards the front of the compartment; and a door in the compartment for opening the compartment so that a stack of pouches can be located in the compartment by inserting the stack through the open door in a direction substantially perpendicular to the direction the pouch stack biasing member biases the pouches towards the front of the compartment.
  • the compartment can be very easily refilled when it is empty simply by opening the door, retracting the biasing member and then locating a stack of the pouches through the open door. The door can then be closed, the biasing member released for biasing the stack and so that the compartment is again ready for supplying pouches to the pick up mechanism.
  • refilling of an empty compartment can be quickly and easily performed.
  • the compartment is generally rectangular in cross-section having first, second, third and fourth side walls which define four corners.
  • a biasing means which comprises a first spring arranged adjacent one of the side walls, and a second spring arranged adjacent an adjacent side wall to said one of the side walls, so that the first and second springs bias the pouches into one of the corners of the compartment.
  • the magazine includes a plurality of compartments .
  • the or each compartment is provided with a first pouch stack biasing member and an independent second stack biasing member for biasing the stack of pouches to a front of the compartment, the first and second pouch stack biasing members being able to independently bias portions of the stack to thereby accommodate different thickness of the stacks produced by virtue of the different thickness of the pouches so that the pouch at the front of the stack is substantially flat to facilitate proper pickup by a robot.
  • first and second pouch stack biasing members comprise hydraulic or pneumatic cylinder and ram assemblies .
  • the biasing pressure of the pouch stack biasing members is independently controllable to provide different biasing pressures to overcome different degrees of friction as the stack is pushed towards the front of the compartment .
  • each compartment has a peripheral flange at the front of the compartment for holding the stack of pouches in the compartment until one of the pouches is collected by a robot and pulled through the front of the compartment passed the peripheral flange.
  • the plurality of compartments are provided in a drawer which can be moved from a delivery position at which pouches are deliverable from the magazine, to an open position to facilitate reloading of pouches into the compartment .
  • each drawer including at least one said compartment.
  • locking means is provided for selectively locking the drawer in the delivery position to prevent movement of the drawer and therefore the compartment when pouches are being delivered from the magazine.
  • the locking mechanism comprises a pin provided on the drawer or on a fixture relative to the drawer and a hole provided on the other of the drawer or the fixture so the pin can locate in the hole to thereby lock the drawer.
  • a further object is to overcome problems relating to movement of a stack of pouches in the magazine so that the stack is properly advanced to a front of the magazine so an end pouch of the stack is ready for collection by a pickup device such as a robot.
  • This aspect of this invention therefore provides a magazine for storing a stack of pouches for a line, comprising: at least one compartment for storing the stack of pouches for pickup by a pickup device; at least two pouch stack biasing members for biasing the stack of pouches in the compartment towards the front of the compartment; and pressure regulating means for regulating the pressure of the biasing members independently of one another so that different pressures are provided to accommodate different degrees of friction of the stack of pouches within the compartment caused by different characteristics of the pouches at different locations in the stack of pouches, so that the stack is pushed to the open front and the end pouch of the stack is held substantially flat for pickup by the pickup device .
  • the tendency of the stack to want to distort or become stuck in the compartment as it is being pushed forward in the compartment is overcome by providing different pressures of the biasing means to overcome those different degrees of friction at various parts of the stack.
  • the compartment is generally rectangular in cross-section having first, second, third and fourth side walls which define four corners .
  • a biasing means which comprises a first spring arranged adjacent one of the side walls, and a second spring arranged adjacent an adjacent side wall to said one of the side walls, so that the first and second springs bias the pouches into one of the corners of the compartment.
  • the magazine includes a plurality of compartments .
  • the pouch stack biasing members comprise a first pouch stack biasing member and an independent second stack biasing member for biasing the stack of pouches to a front of the compartment, the first and second pouch stack biasing members being able to independently bias portions of the stack to thereby accommodate different thickness of the stacks produced by virtue of the different thickness of the pouches so that the pouch at the front of the stack is substantially flat to facilitate proper pickup by a robot.
  • first and second pouch stack biasing members comprise hydraulic or pneumatic cylinder and ram assemblies .
  • the at least one compartment is closed by a door to provide access to the compartment so that a stack of pouches can be located in the compartment by passing the compartment through the open door in a direction substantially perpendicular to the direction of bias and movement of the stack of pouches provided by the pouch stack biasing members.
  • each compartment has a peripheral flange at the front of the compartment for holding the stack of pouches in the compartment until one of the pouches is collected by a robot and pulled through the front of the compartment passed the peripheral flange.
  • the plurality of compartments are provided in a drawer which can be moved from a delivery position at which pouches are deliverable from the magazine, to an open position to facilitate reloading of pouches into the compartment .
  • each drawer including at least one said compartment.
  • locking means is provided for selectively locking the drawer in the delivery position to prevent movement of the drawer and therefore the compartment when pouches are being delivered from the magazine.
  • the locking mechanism comprises a pin provided on the drawer or on a fixture relative to the drawer and a hole provided on the other of the drawer or the fixture so the pin can locate in the hole to thereby lock the drawer.
  • Figure 1 is a schematic plan view of a filling and heat sealing line for filling pouches with food product according to the preferred embodiment of the invention
  • Figure 2 is a perspective view of a delivery station used in the embodiment of Figure 1
  • Figure 3 is an end view of the station of Figure 1 in a first position
  • Figure 4 is a view similar to Figure 3 but in a second position
  • Figure 5 is a view of a magazine used in the station of Figures 2 to 4
  • Figure 6 is a more detailed end view of the station of Figure 2
  • Figure 7 is a front view of part of the magazine of Figure 5
  • Figure 8 is a bottom view of the magazine of Figure 7
  • Figure 9 and Figure 10 show the manner in which the magazine is locked in a delivery position
  • Figure 11 is a side view of an indexing and holding mechanism of the filling line of Figure 1
  • Figure 12 is a plan view of a holding mechanism according to the preferred embodiment
  • Figure 13 is a plan view of the index
  • the line 10 includes a delivery station 5 which is comprised of a magazine 35 and a robot 30 , both of which will be described in more detail hereinafter.
  • the line includes a holding mechanism and indexing mechanism 80, 90 which holds and indexes pouches delivered by the delivery station 5 along the line for filling and sealing with products such as a food product.
  • the filling and heat sealing line 10 may typically include an opening station 12 where pouches are opened ready for filling, a filling station 14 where the pouches are filled with product, a closing station 16 where the open top of the pouches are closed, a heat sealing station 18 where the top of the pouches are heat sealed, a cooling station 20, a rejection station 22 where pouches which do not meet a predetermined requirement may be rejected, and a vision station 24 for inspecting the integrity of the heat seal to ensure that the heat seal is properly formed. If the heat seal is not properly formed, the vision station can activate a further rejection station (not shown) to reject improperly sealed pouches .
  • Stations of the above-described type are well known and therefore need not be described in any further detail. Furthermore, it should be understood that the amount of stations which are included in the line and the nature of the stations can vary depending on the product which is being supplied to the pouches , and also dependent on the environment in which the line 10 is being used.
  • the delivery station 5 is shown in Figure 2 and comprises a structural housing 28 formed from a framework in which a pickup device 30 preferably in the form of a robot is provided.
  • the housing 28 supports a first drawer 32 and a second drawer 34 , each of which contain a magazine 35 comprised of a plurality of compartments 36, 37, 38 and 39.
  • the drawers 32 and 34 can be moved from a delivery position, as per the lower drawer in Figure 2 , to an open position as per the upper drawer in Figure 2.
  • the compartments 36 to 39 can be refilled with a stack of pouches whilst the lower drawer 34 is used to supply pouches to the line 10.
  • the drawers 32 and 34 are angled or inclined so that the opening of one drawer does not interfere with the robot 30 accessing the other drawer.
  • the drawer can be opened and refilled whilst the robot removes pouches from the other drawer .
  • the robot 30 includes a head 40 which carries a plate 42.
  • the plate 42 has a plurality of suction cups 44 which are vacuum controlled so that when the plate 42 is positioned by the robot 30 onto the pouches within the compartments 36 to 39, the top pouch in each of the compartments 36 to 39 can be picked up by one of the suction cups 44 for delivery to the holding and indexing mechanisms 80, 90 the front part of which can be seen above the robot 30 in Figure 2.
  • the robot 30 grips the top pouch in each of the compartments 36 to 39 and lifts the top pouch from each compartment and delivers the pouches to the position shown in Figure 4 where the pouches are ready to be gripped by the holding and indexing mechanism 10 which will be described in detail hereinafter .
  • Figure 5 is a cross-sectional view through one of the compartments of the magazine 35 similar to the view shown in Figures 3 and 4.
  • compartments 36 to 39 are all the same and therefore the compartments will be described in more detail with reference to the compartment 39 which is shown in Figure 5.
  • the compartment 39 is generally rectangular in configuration and has a bottom wall 45, end wall 46 and an open front 47.
  • the compartment 39 has side wall 48 and opposite side wall 49 (best shown in Figure 2) .
  • the open front 47 of each of the compartments 36 to 39 is closed by a door 50 which is shown open in Figure 5 and which can move from the open position which allows access to each of the compartments 36 to 39 through the open front 47, to a closed position which closes the open front 47.
  • the door 50 which is shown open in Figure 5 and which can move from the open position which allows access to each of the compartments 36 to 39 through the open front 47, to a closed position which closes the open front 47.
  • hinge 50 can simply be hinged by hinge 38 (see Figure 7) and may be provided with a small handle (not shown) to facilitate opening and closing movement.
  • the compartment 39 has an open front 51 and the open front
  • a stack 53 of pouches is locatable in the compartment 39 by simply locating the stack through the opening 47 when the door 50 is opened.
  • the pouches forming the stack 53 have, as described previously, a bottom which is formed with a gusset and therefore the bottom part of the pouches is somewhat thicker than the top part of the pouches, meaning that when the pouches are stacked to form the stack 53, the stack has a thinner top end 53a and a somewhat thicker bottom end 53b caused by the additional material provided by the gusset.
  • each compartment is provided with a pair of cylinder and ram members 55 and 56.
  • Each member has a ram 57 and a cylinder 58.
  • the ram 57 carries a head 59.
  • the members 55 and 56 are independently operable so they push against the stack 53 with the top member shown in Figure 5 pushing further into the stack to compress the thinner top portion 53a, and the bottom member 56 advancing somewhat of a lesser distance to accommodate the thicker portion of the stack 53b.
  • the two rams are able to push to different lengths within the compartment 39, thereby properly holding the curved or non-uniform profile of the stack 53, the front pouch at the front opening 51 is held flat where it can be easily and properly collected by the robot 30.
  • the ram and cylinder members 55 and 56 bias the stack 53 towards the front face 51 where the stack is held in position by the peripheral flange 52.
  • the top pouch When the robot 30 grips the top pouch in the stack 53, the top pouch can be easily pulled through the open face 51 passed the flange 52 because the pouches are very flexible and therefore will easily flex around the flange 52 when collected by the cups 44 of the head 40 of the robot 30.
  • each of the cylinder and ram members 55 and 56 can be biased with different pressures to ensure that the stack 53 is properly pushed towards the front open face 51 of the compartment 39.
  • a greater degree of friction may occur between the portion 53b of the stack 53 than occurs at the portion 53a.
  • a slightly greater force is required by the ram 56 to push the portion 53b of the stack to the front 51 of the compartment.
  • the drawer 32 can be opened as previously described, and the rams 57 retracted so that a new stack 53 can be located in the compartment 39 simply by opening the door 50 and locating in the stack through the opening 47.
  • the other compartments are refilled in exactly the same manner .
  • the compartments can be very quickly and easily refilled, whilst the robot collects pouches from the other drawer 34 containing an identical magazine 35 to that just described.
  • the housing 28 may be provided with a cover 56a for opening the housing 30 so that access can be gained if necessary.
  • the drawers 32 and 34 can be locked in the closed or delivery position by a lock mechanism 58a.
  • the lock mechanism 58 comprises a cylinder 59 which is provided with a pin 60.
  • the cylinder 59 is mounted on frame part 28a and the pin 60 passes through a hole 61 in the frame part 28a.
  • the drawer 32 (and 34) is provided with a hole 62 in a frame part 63.
  • the pin 60 is forced forward by the cylinder 58 so the pin 60 locates in the hole 63, as is shown in Figure 10.
  • the pin 60 is retracted from the hole 63 to the position shown in Figure 9 so the drawer can be pulled open.
  • the drawer 32 and also the drawer 34 is mounted on a guide track assembly schematically shown as 70 in the manner of a conventional drawer so the drawer can simply slide from the delivery position to the open position, and then back to the delivery position.
  • Figure 7 is a view of the open front 51 of the compartments of the magazine 35 with no pouches stacked in the compartment.
  • the pouches are shown separate from the compartment merely for illustrative purposes and referenced PI to P4 in Figure 7.
  • each compartment 39 is provided with a first spring 71 and a second spring 72 so that the stack 53 of pouches is biased towards the corners A (see Figure 7) of the compartments 36 to 39.
  • the stack of pouches will be biased upwardly in Figure 7 and towards the left or right by the springs so the corners of the pouches are pushed into the corners marked A in Figure 7.
  • pouches may have different tolerances and may be slightly different sized up to by even 1 mm or more, it is important that the pouches be forced into a desired orientation within the compartments so that they are correctly located for collection by the robot 30 , and then correctly oriented relative to one another so that they will be indexed properly through the line in the manner to be described hereinafter.
  • the magazine 35 includes four compartments and four pouches are delivered at a time to the holding and indexing mechanisms 80 , 90.
  • the distance between the midpoints of the corners A shown in Figure 7 and marked L in Figure 7 is 330 mm.
  • the distance between the adjacent pouches at the corner A is about 6 mm and, as can be seen from Figure 7, there is a greater distance between the middle two compartments 37 and 38.
  • the distance of 330 mm equates to a unit index distance which is the distance each pouch is moved through the line during each reciprocating indexing movement of the line.
  • the springs 71 and 72 are provided so that they effectively bias the stacks 53 away from one wall of the respective compartment and away from an adjacent wall of the same compartment so that the stacks are biased into the corners A shown in Figure 7.
  • Figure 11 is a side view of the holding mechanism and indexing mechanism of the preferred embodiment of the invention. As is shown in Figure 10, the indexing mechanism 90 is arranged below the holding mechanism 80.
  • Figure 12 is a plan view of the mechanism 80 (shown separate from the mechanism 90 for ease of illustration) , Figure 12 shows only part of the length of the mechanism 80.
  • Figure 13 shows the mechanism 90 separate from the mechanism 80 and, once again, only part of the mechanism is shown .
  • the holding mechanism 80 and the indexing mechanism 90 are generally of conventional design, except for the features which will be described below and are operated in accordance with conventional techniques , except that the sequencing is different, as will also be explained below.
  • the holding mechanism 80 comprises a first holding beam 81 and a second parallel holding beam 82 which is spaced from the beam 81.
  • Each of the beams 81 and 82 have a plurality of clamping fingers 83.
  • the beams 81 and 82 are arranged so that they move towards and away from one another in the direction of double headed arrow A in Figure 12.
  • the beams 81 and 82 are supported by telescoping cylinder assemblies 83 and 84 (see Figure 11) which allows the movement of the beams 81 and 82 towards and away from one another, as illustrated by the arrow A in Figure 12.
  • the respective pins 83 on each of the beams 81 and 82 are brought into a clamping position where they can clamp pouches and hold pouches, whilst the indexing mechanism 90 opens and reciprocates back to a starting position to then commence the next indexing movement.
  • the fingers 83 separate to release the pouches so the pouches can then be moved by the indexing mechanism 90 to index the pouches along the line .
  • Figure 13 shows part of the indexing mechanism 90.
  • the indexing mechanism 90 includes a first indexing beam 91 and a second indexing beam 92.
  • the beams 91 and 92 are provided with indexing fingers 93.
  • the beams 91 and 92 are able to move towards and away from one another in the direction of double headed arrow B in Figure 12, and also to reciprocate in the direction of double headed arrow C in Figure 12.
  • the beams 91 and 92 are provided with gripping bars 94 and
  • the bars 94 and 95 are also supported by rods 98 which are provided with turnbuckles 99.
  • the rods 98 connect by pivotal connection 100 to the bars 94 and 95 respectively, and also pivotally coupled to the beams 91 and 92 by pivotal couplings 101.
  • the holding mechanism 80 and the indexing mechanism 90 described above are substantially conventional in design and operate in the conventional manner.
  • the drive for moving the mechanisms 80 and 90 is schematically shown, and because the mechanism is known, will not be described in detail .
  • the mechanism is driven by a cam arrangement 103 which includes a cam track 104 and a cam follower 105 which reciprocates movement to both of the mechanisms 80 and 90 so that the mechanisms can move in sequence in the above-described manner .
  • the holding mechanism 80 is provided with a second holding device 120 (best shown in Figure 12) and the length of the gripping bars 94 and 95 are extended so that they effectively have a length of a multiple of the unit indexing distance of the indexing mechanism 90.
  • the bar 94 would pick up a number of pouches which is equivalent to the indexing unit distance (for example two pouches) and delivery those two pouches to the pins 83 of the holding mechanism 80.
  • the holding mechanism 80 would then grip thos pouches and the bar 94 would release the pouches so that the indexing mechanism 90 could then reciprocate back to a starting position and the bar 94 could grip a further two pouches.
  • pins 93 of the indexing mechanism 90 would grip the pouches held by the holding mechanism 80 so that in the next indexing movement, the pouches previously held by the holding mechanism 80 would be indexed one unit and the pouches held by the bars 94 would be indexed one unit.
  • the holding mechanism 80 would then grip the pouches so that the indexing mechanism could release the pouches and then return to grip another two pouches .
  • a number of pouches equivalent to the indexing distance are delivered by the robot to the mechanism 90 for indexing the pouches along the line.
  • the robot needed to work at the same speed as the indexing mechanism 90 or spaces would result in the line if no pouches were delivered.
  • the secondary holding device 120 comprises first and second clamp jaws 121 and 122 which are supported by telescoping pin and cylinder arrangements 123.
  • Each jaw 121 and 122 is provided with a hydraulic or pneumatic ram 124 so that the jaws 121 and 122 can be clamped closed or opened independent of the movement of the beams 81 and 82 which clamps the pins 83 or opens the pins 83.
  • Figures 14 to 20 and 21 to 26 show the operation of the preferred embodiment of the invention.
  • the robot 30 delivers four pouches at a time to the indexing mechanism 90.
  • Figure 14 shows the robot 30 in the process of picking up the four pouches from the four compartments 36 to 39.
  • the gripping bars 94 and 95 are at a starting position and are open, as are the beams 91 and 92.
  • the beams 91 and 92 of the holding mechanism are closed because the pins 83 of that mechanism may well be holding pouches previously delivered to the line.
  • the clamp jaws 121 and 122 of the second holding device 120 are open.
  • the head 40 of the robot 30 has gripped four pouches, one from each of the compartments 36 to 39 and delivered those pouches to the position shown in Figure 4 and also shown in Figure 21.
  • the pouches are now in registry with the gripping bars 94 and 95.
  • the indexing beams 91 and 92 are then brought together so that the pins 93 close, as do the bars 94 and 95.
  • the bars 94 and 95 close, they clamp the pouches held by the robot head 40 and which are marked Pi to P4 in Figure 15.
  • the movement of the beams 91 and 92 causes the pins 93 to grip any pouches which are already in the indexing bars 90 and already moving along the line.
  • Figure 21 is a side view showing the pouches Pi to P4 gripped by the bars 94 and 95 ready for their first indexing movement.
  • Figure 16 shows the clamp bars 94 and 95 closed and clamping the pouches PI to P4 and also the pins 93 closed, which would grip any of the pouches which are already in the line.
  • the clamp jaws 121 and 122 are open and the holding mechanism 80 is opened by separating the bars 81 and 82 so the pins 83 release the pouches which are now held by the pins 93.
  • the cam mechanism 103 then moves the indexing mechanism 90 one indexing unit to the right as shown by arrow D in Figures 15 and 16 so that the mechanism 90 moves to the position shown in Figure 17, and also Figure 22.
  • This movement positions pouches P3 and P4 in registry with a set of the pins 83 on the beams 81 and 82, and also positions the pouches PI and P2 between the clamp jaws 121 and 122.
  • the beams 81 and 82 are then moved together so that the pins 83 clamp the pouches P3 and P4 and also other pouches which may be down line already in the indexing mechanism 90.
  • the jaws 121 and 122 are closed so that they clamp the pouches PI and P2.
  • the pouches PI to P4 are now held by the holding mechanism 80 and the secondary holding device 120 and any pouches which are already in the indexing machine are held by other of the pins 83 downstream along the beams 81 and 82.
  • the indexing mechanism 90 is then free to return under the power of the cam mechanism 130 back to its starting position by opening in the direction of double headed arrow B in Figure 13 and returning in reciprocating movement to the left so that the mechanism 90 is returned to the starting position shown in Figure 14 and Figure 21.
  • This position is also shown in Figure 23 in which the pouches PI to P4 can clearly be seen with the pouches Pi and P2 held by the secondary holding device 120 and the pouches P3 and P4 held by pins 83 of the beams 81 and 82.
  • the robot is returning to pick up another four pouches, but as will be apparent from the following description, has a further cycle of the indexing mechanism 90 before those pouches need to be delivered for collection.
  • the indexing mechanism 90 effectively performs two cycles for each cycle of the robot 30 because it is apparent from the previous description the robot 30 is delivering four pouches which is a number of pouches equivalent to twice the unit indexing distance of the indexing mechanism 90.
  • the mechanism moves equivalent to the distance of two pouches and not four pouches , which is the number of pouches picked up by the robot 30.
  • the additional two pouches are held by the secondary holding device 120 , as will become apparent from the following description.
  • the indexing mechanism 90 has returned to its starting position by the outward and reciprocating movement generally illustrated by the arrows in Figure 19, and again closes so that the pouches PI and P2 which are held by the secondary clamping device 120 are now gripped by the bars 94 and 95.
  • no pouches are provided in the part of the bars 94 and 95 which extends beyond the second holding device 120.
  • the pouches P3 and P4 which were held by the pins 83 of the beams 81 and 82 are now also gripped by the pins 93 of the mechanism 90.
  • the beams 81 and 82 and the clamp jaws 121 and 122 are then moved apart so that they release the pouches PI to P4.
  • the pouches Pi to P4 are now held by the bars 94 and 95 and by the clamping pins 93 of the indexing mechanism 90.
  • the mechanism 90 then indexes one indexing unit to the right in Figure 19 as shown by arrow D.
  • the indexing mechanism 90 moves one indexing unit to the right in Figures 19 and 20, the pouches Pi and P2, and pouches P3 and P4 are advanced one unit along the line.
  • the pouches Pi and P2 arrive at the position shown in Figures 20 and 24, and the pouches P3 and P4 index one unit to the right, as also shown in Figure 24.
  • the pouches PI to P4 are now aligned with pins 83 of the holding beams 81 and 82.
  • the beams 81 and 82 are therefore closed so the pins 83 now hold all of the pouches PI to P4.
  • the second holding device 120 is maintained open, notwithstanding that the beams 81 and 82 are closed to clamp the pouches Pi to P4 by independent operation of the cylinders 124 previously described.
  • the robot Whilst the indexing mechanism 90 has been doing its second indexing movement to move the pouches Pi and P2 out of the second holding device 120 and onto the pins 83 of the beams 81 and 82, the robot has been lifting a further four pouches up into the position shown in Figure 4 and also shown in Figure 25. In this position, the mechanism is effectively back to the starting position shown in Figures 14 and 21, with the pouches held by the bars 94 and 95, and with two of the pouches in registry with the second holding device 120.
  • the pouches Pi to P4 as has been shown in Figure 25, have all been advanced so that they are now held within the pins 83 of the holding beams 81 and 82 or the pins 93 of the indexing beams 91 and 92.
  • the sequence starts again with the clamp jaws 94 and 95 clamping the pouches P5 to P8 and the pins 93 of the mechanism 90 clamping the pouches PI to P4.
  • all of the pouches are indexed one indexing unit (ie. effectively two pouch lengths) into the position shown in Figure 26 so that the pouches P5 and P6 can be gripped by the jaws 121 and 122 of the second holding device 120 and the pouches P7 , P8 , PI , P2 , P3 and P4 are held by pins 83 of the holding beams 81 and 82.
  • the mechanism 90 can then reciprocate back to its starting position where the gripper bars 94 and 95 can grip the pouches P5 and P6 and also the pins 93 grip the other pouches P7 , P8 and PI to P4.
  • the next indexing movement to the right indexes the pouches one unit so that the pouches P5 and P6 are moved from the holding device 120 into registry with pins 83 on the beams 81 and 82 so that those pouches together with the other pouches can then be gripped and held by the holding beams 81 and 82 while the mechanism 90 returns back to its starting position to again collect four new pouches from the robot 30.
  • the robot will operate at half the speed of the indexing mechanism, but delivers twice as many pouches than the number of pouches corresponding to the unit indexing distance.
  • the throughput of the filling line is maintained the same while the robot need move only at half the speed of the indexing mechanism.
  • the robot is able to operate much more efficiently at lower speed, whilst at the same time ensuring that the line is always filled and that there are no gaps in the line to thereby maintain the throughput of the filling and sealing line.
  • the unit indexing distance is equivalent to two pouches and four pouches are delivered by the robot, in other embodiments, any multiple of the indexing distance may be provided.
  • the indexing distance may be equivalent to one pouch and the robot may delivery two pouches at a time, or the indexing distance may be equivalent to three pouches and the robot may deliver six pouches at a time, and so on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

La présente invention a trait à une chaîne de remplissage et de scellage de sachets comportant un robot (30) pour le déplacement des sachets depuis un chargeur (35) vers un mécanisme de maintien et un mécanisme d'indexation (80, 90) et pour le défilement des sachets le long de la chaîne de remplissage et de thermoscellage pour le remplissage et le scellage. Un nombre de sachets supérieur à une distance d'indexation peut être distribué à la chaîne de sorte que lors de l'indexation certains des sachets sont maintenus par un dispositif de maintien secondaire (120) pour que en un mouvement d'indexation, un nombre de sachets parmi ceux distribués égal à la distance d'indexation soit déplacé et ceux retenus par le dispositif de maintien secondaire (120) soient indexés en un mouvement suivant. Le chargeur (35) comporte une pluralité de compartiments (39) pour la réception de sachets. Des coulisseaux (55) et (56) sont prévus pour l'application de différentes pressions de sorte que les épaisseurs des diverses parties des sachets soient logées, le sachet en haut de la pile étant maintenu sensiblement à plat pour sa saisie aisée par le robot (30). Des ressorts (71) et (72) sont également prévus pour solliciter les sachets vers une position prédéterminée pour leur prise par le robot (30). Chaque compartiment est muni d'une porte (50) qui peut être ouverte pour l'accès à une ouverture (47) pour permettre le chargement des sachets à travers le flanc du compartiment en une direction transversale à la direction de défilement des sachets dans les compartiments lors de leur prise par le robot.
PCT/AU2005/000504 2004-04-15 2005-04-07 Chaine de remplissage et de scellage de sachets et chargeur pour la distribution de sachets WO2005100163A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004902005A AU2004902005A0 (en) 2004-04-15 Pouch filling and sealing line and a magazine for delivering pouches
AU2004902005 2004-04-15

Publications (1)

Publication Number Publication Date
WO2005100163A1 true WO2005100163A1 (fr) 2005-10-27

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Cited By (5)

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CN102975275A (zh) * 2012-11-12 2013-03-20 东莞市南兴家具装备制造股份有限公司 双面自动封边装置生产线
ES2400439R1 (es) * 2011-02-18 2013-11-11 Ind Maxi S A Maquina y procedimiento de automatizacion de envasado de productos
CN103738532A (zh) * 2014-01-15 2014-04-23 成都弘林机械有限公司 一种全自动封边机自动纵、横向送料机
CN106738127A (zh) * 2016-12-14 2017-05-31 广州欧派集成家居有限公司 板材封边上料方法及系统
EP3241768A1 (fr) * 2016-05-02 2017-11-08 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Dispositif destiné à la transmission de sachets de feuilles

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GB2020242A (en) * 1978-05-09 1979-11-14 Molins Ltd Distributing Streams of Articles
DE2855088A1 (de) * 1978-12-20 1980-07-03 Vtv Hermetic Verpackungstechni Vorrichtung zum schrittweisen transportieren von gegenstaenden, insbesondere von verpackungsschachteln, laengs einer vorgegebenen transportbahn
US4456118A (en) * 1981-11-18 1984-06-26 Ex-Cell-O Corporation Single to dual indexing carton transfer mechanism
US5443150A (en) * 1993-09-23 1995-08-22 Rapidpak, Inc. Apparatus for advancing preformed containers

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Publication number Priority date Publication date Assignee Title
GB2020242A (en) * 1978-05-09 1979-11-14 Molins Ltd Distributing Streams of Articles
DE2855088A1 (de) * 1978-12-20 1980-07-03 Vtv Hermetic Verpackungstechni Vorrichtung zum schrittweisen transportieren von gegenstaenden, insbesondere von verpackungsschachteln, laengs einer vorgegebenen transportbahn
US4456118A (en) * 1981-11-18 1984-06-26 Ex-Cell-O Corporation Single to dual indexing carton transfer mechanism
US5443150A (en) * 1993-09-23 1995-08-22 Rapidpak, Inc. Apparatus for advancing preformed containers

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2400439R1 (es) * 2011-02-18 2013-11-11 Ind Maxi S A Maquina y procedimiento de automatizacion de envasado de productos
CN102975275A (zh) * 2012-11-12 2013-03-20 东莞市南兴家具装备制造股份有限公司 双面自动封边装置生产线
CN102975275B (zh) * 2012-11-12 2014-11-05 东莞市南兴家具装备制造股份有限公司 双面自动封边装置生产线
CN103738532A (zh) * 2014-01-15 2014-04-23 成都弘林机械有限公司 一种全自动封边机自动纵、横向送料机
EP3241768A1 (fr) * 2016-05-02 2017-11-08 INDAG Gesellschaft für Industriebedarf mbH & Co. Betriebs KG Dispositif destiné à la transmission de sachets de feuilles
US10569916B2 (en) 2016-05-02 2020-02-25 Indag Pouch Partners Gmbh Apparatus for the transfer of foil bags
CN106738127A (zh) * 2016-12-14 2017-05-31 广州欧派集成家居有限公司 板材封边上料方法及系统

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