WO2001096097A2 - Systeme de conversion en materiau de calage et procede de chargement de rouleaux de stockage - Google Patents

Systeme de conversion en materiau de calage et procede de chargement de rouleaux de stockage Download PDF

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Publication number
WO2001096097A2
WO2001096097A2 PCT/US2001/040950 US0140950W WO0196097A2 WO 2001096097 A2 WO2001096097 A2 WO 2001096097A2 US 0140950 W US0140950 W US 0140950W WO 0196097 A2 WO0196097 A2 WO 0196097A2
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WO
WIPO (PCT)
Prior art keywords
stock
roll
machine
dunnage
loading
Prior art date
Application number
PCT/US2001/040950
Other languages
English (en)
Other versions
WO2001096097A3 (fr
Inventor
Edward W. Lintala
Original Assignee
Ranpak Corp.
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
Application filed by Ranpak Corp. filed Critical Ranpak Corp.
Priority to AU2001267080A priority Critical patent/AU2001267080A1/en
Publication of WO2001096097A2 publication Critical patent/WO2001096097A2/fr
Publication of WO2001096097A3 publication Critical patent/WO2001096097A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D5/00—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles
    • B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
    • B31D5/0043—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including crumpling flat material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
    • B31D2205/0017—Providing stock material in a particular form
    • B31D2205/0023—Providing stock material in a particular form as web from a roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0076—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads involving particular machinery details
    • B31D2205/0082—General layout of the machinery or relative arrangement of its subunits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D2205/00—Multiple-step processes for making three-dimensional articles
    • B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
    • B31D2205/0076—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads involving particular machinery details
    • B31D2205/0088—Control means

Definitions

  • the invention described herein relates generally to a dunnage conversion system and method for producing a dunnage product from sheet stock material, and more particularly to an improved system and method for loading a roll of stock material for use by a dunnage conversion machine.
  • a protective packaging material In the process of shipping an item from one location to another, a protective packaging material generally is placed in the shipping case, or box, to fill any voids, to cushion, to block and/or to brace the item during the shipping process.
  • Various types of packing products have been used to pack articles in containers for shipment, including a crumpled paper dunnage product which is biodegradable, recyclable, and composed of a renewable resource, making it an environmentally responsible choice.
  • the conversion of sheet material into a crumpled dunnage product may be accomplished by a cushioning conversion machine, such as those disclosed in U.S. Patent Nos. 4,750,896; 4,884,999; and/or 5,607,383. (These patents are assigned to the assignee of the present application and their entire disclosures hereby are incorporated herein by reference.)
  • Each of the cushioning conversion machines disclosed in the above- identified patents includes a conversion assembly which converts sheet stock material composed of one or more plies into a relatively less dense three-dimensional cushioning product.
  • the conversion assembly includes a forming assembly which forms the sheet stock material into a strip of cushioning that is severed to form discrete pads useful as a packing material.
  • a roll of sheet stock material is rotatably supported on a stock roll holder, such as an axle or a spindle, that passes through the core of the stock roll with its ends projecting therebeyond for cradled receipt in respective laterally spaced apart mounts of a roll support member.
  • the mounts may be provided, for example, directly on the frame of the cushioning conversion machine as shown in commonly assigned U.S. Patent No. 4,968,291. The entire disclosure of this patent is hereby incorporated herein by reference.
  • the stock roll typically would be loaded by positioning the stock roll on the floor or on a stand near the cushioning conversion machine.
  • the axle or spindle would then be inserted into the center of the stock roll that then could be raised by grasping and lifting the projecting ends of the spindle for placement onto the laterally spaced apart mounts.
  • circumstances may require the conversion machine to be placed against a wall, over a conveyor or packaging surface, or otherwise located at an elevated position.
  • the conversion machine is at or above head level, which makes loading a stock roll onto the machine more difficult because of the greater height which the stock roll must be lifted and/or because of restricted access to the stock roll end of the conversion machine. In such situations it may be difficult or even impossible for one person to load a stock roll on the machine.
  • large stock rolls are desired, in which case the weight of such large stock rolls makes them difficult to load.
  • two people are needed to lift a stock roll and place it on the machine. Accordingly, it would be desirable to provide an improved system which facilitates the loading of a stock roll in those situations where conventional loading practices cannot be performed easily, if at all.
  • a person other than the machine operator may be designated to lift and load stock rolls onto the machine.
  • delay may arise when such person, or attendant, is not at the machine to load a stock roll when it is needed. Consequently, the operator of the machine must wait until such person returns to the machine and such delay may be of considerable length when the attendant is busy with another task, such as loading a stock roll on another machine or machines.
  • the present invention provides a dunnage conversion system and a method of its use.
  • the dunnage conversion system includes a dunnage conversion machine which converts sheet stock material into a relatively lower density dunnage product useful for packing, and a stock roll loading assembly which raises a roll of the sheet stock material from a receiving position to an elevated loading position to load the stock material into the machine.
  • the stock roll loading assembly has a powered elevator which lifts a stock roll
  • the machine has a stock supply assembly with a pair of catches which engage and then capture a stock roll holder automatically.
  • the system and method enable an operator to easily load a stock roll onto a conversion machine without having to lift the stock roll manually and/or without having to wait for an attendant to lift and load a stock roll on the machine.
  • the machine itself has a stock supply assembly which facilitates loading a stock roll on the machine.
  • a dunnage conversion system includes a dunnage conversion machine for converting sheet stock material into a relatively lower density dunnage product.
  • the dunnage conversion machine has an elevated operating position.
  • the dunnage conversion system also includes a loading assembly having a powered elevator for raising a roll of the sheet stock material to an elevated position for loading the machine.
  • the dunnage conversion machine has a conversion assembly which converts the sheet stock material into the relatively lower density dunnage product, and a stock supply assembly supporting a roll of the sheet stock material.
  • the dunnage conversion machine may further include a discharge guide assembly which guides dunnage products from the machine to a conveyor.
  • a method of loading a roll of sheet stock material on a dunnage conversion machine which converts the sheet stock material into a lower density dunnage product, includes: placing the roll of the sheet stock material on an elevator, and then controllably supplying power to the elevator for raising a roll of sheet stock material to an elevated position for loading the machine.
  • the method includes rotating the machine between an operating position and a loading position.
  • the stock roll holder is movable between an operating position and a clearance position permitting passage of the stock roll spindle therepast for automatic loading.
  • the stock roll holder has laterally spaced catches for supporting the spindle and the stock roll, the catches are rotatably biased to the operating position, the catches have cam surfaces which, when engaged, urge the catches away from the operating position to the clearance position, the catches have a hook portion having a U-shape for supporting the stock roll spindle in the bight of the hook portion, and/or the catches generally have an L-shape with a pivot point near one end of the L-shape and the hook portion is at the distal end of the L-shape.
  • a dunnage conversion machine for converting sheet stock material into a lower density dunnage product includes a stock supply assembly having a pair of laterally spaced apart catches for capturing and supporting a spindle passing through a roll of the sheet stock material.
  • a dunnage conversion machine for converting sheet stock material into a lower density dunnage product includes a pad discharge assembly for guiding dunnage products from an exit of the machine, wherein the length of the pad discharge assembly is adjustable.
  • Fig. 1 is a side elevational view of a dunnage conversion system according to the present invention, including a dunnage conversion machine and a stock roll loading assembly.
  • Fig. 2 is a top view of the dunnage conversion system of Fig. 1 taken from line 2-2 of Fig. 1.
  • Fig. 3 is an end elevational view of the dunnage conversion system of Fig. 1 looking from line 3-3 of Fig. 1.
  • Fig. 4 is an enlarged side view of the dunnage conversion machine of Fig. 1 , looking from line 4-4 of Fig. 2, showing the conversion machine in an operating position.
  • Fig. 4A is an enlarged side view of a stock supply assembly of the dunnage conversion machine shown in Fig. 4, looking from line 4A-4A of Fig. 2.
  • Fig. 4B is an enlarged side view of a pad discharge assembly of the dunnage conversion machine shown in Fig. 4, looking from line 4C-4C of Fig. 2.
  • Fig. 4C is an enlarged top view of pad discharge assembly of Fig. 4B, looking from line 4C-4C of Fig. 1.
  • Fig. 5 is top view of the dunnage conversion machine shown in Fig. 4, looking from the line 5-5 of Fig. 4.
  • Fig. 6 is an enlarged side elevational view of the stock roll loading assembly shown in Fig. 1.
  • Fig. 7 is a top view of the stock roll loading assembly shown in Fig. 6 looking from line 7-7 of Fig. 6.
  • Fig. 8 is an end elevational view of the dunnage conversion system of Fig. 1 showing the conversion machine in a loading position.
  • FIGs. 1-3 An exemplary dunnage conversion system 10 according to the present invention is shown in Figs. 1-3.
  • the system 10 includes a dunnage conversion machine 12 which converts sheet stock material into a relatively less dense cushioning dunnage product and a stock roll loading assembly 14 which raises a roll 16 of the sheet stock material from a receiving position 18 (Fig. 3) to an elevated loading position 19 (Fig. 8) to load the roll onto the dunnage conversion machine.
  • the sheet stock material generally consists of multiple superimposed webs or plies of kraft paper of any desired basis weight.
  • an about thirty-inch (about 76 cm) wide roll of thirty-pound paper which is approximately four hundred and fifty feet (about 137m) long, will weigh about thirty-five pounds (about 16 kg) and will provide cushioning dunnage equal to approximately four fifteen cubic foot (about 1.7 cubic meters) bags of plastic foam peanuts while at the same time requiring less than one-thirtieth the storage space.
  • the stock material also may be supplied in larger rolls weighing, for example, up to about 105 pounds (about 48 kg) making them more difficult to load. Larger or smaller stock rolls also may be used in some situations, as well as stock rolls of different types and weights of material and/or different numbers of plies.
  • the stock roll 16 generally has a three inch (about 7.5 cm) cardboard tube around which multiple plies of the sheet material are tightly wrapped.
  • a disposable plastic plug may be inserted into each end of the core tube to accommodate a difference between the inner diameter of the tube and the outer diameter of a stock roll holder, such as an axle or a spindle 44, used to support the stock roll on the conversion machine.
  • the holder may incorporate plug portions thereon with the holder formed in two sections such that the sections can be inserted from opposite ends of the tube.
  • dunnage conversion machine which converts the sheet stock material into a lower density dunnage product, such as a void fill, or a cushioning material, may be used in accordance with the invention.
  • the conversion machine 12 is a cushioning conversion machine mounted at an elevated position in a substantially horizontal orientation. In other words, an imaginary line from an upstream end 20 of the machine to a downstream end 22 of the machine, corresponding to the direction of passage of the sheet material through the machine, would be substantially horizontal.
  • the illustrated machine 12 is mounted above and straddles a conveyor 24 with the direction of passage of the sheet material through the machine lying substantially parallel to the longitudinal extent of the conveyor.
  • the conveyor transports totes, bins or other containers 26 which receive dunnage products 30 from the dunnage conversion machine and transport them to a remote location for packing.
  • the system may deposit multiple dunnage pads into the tote from the conversion machine 12, and/or may include multiple dunnage conversion machines along the conveyor to deposit pads above and below a product placed in the tote for packing at the remote location.
  • the conveyor also may include a tote sensor 31 near a downstream end of the machine, such as an optical sensor, to sense the presence of a tote positioned to receive one or more dunnage products.
  • a tote stop 29 also is provided to stop a tote on the conveyor, at a specific location, to receive the dunnage product.
  • the system 10 further includes one or more controllers (not shown) to control the operation of the conversion machine 12, the loading assembly 14 and/or the conveyor 24.
  • a signal from the tote sensor 31 indicating the presence of a tote 26 may cause the controller to instruct the machine to produce a dunnage product 30 of a specific length and cause it to be deposited in the tote.
  • the machine 12 generally includes a stock supply assembly 32 at the upstream end 20 of the machine that supplies the sheet stock material to the machine.
  • a conversion assembly (not shown), of any defined type, is enclosed in a housing 34 downstream of the stock supply assembly and converts the sheet stock material into a less dense dunnage product or pad.
  • a pad discharge assembly 36 located at a downstream end of the machine directs the pads 30 to the awaiting tote 26 for use as dunnage products.
  • the stock supply assembly 32 includes two laterally spaced bracket walls 40 which support a capture device 42 at distal upstream ends of the walls to support and capture the ends of a stock roll spindle 44 supporting the stock roll 16, a constant-entry device 46 downstream of the capture device, and a separating device 50 downstream of the constant-entry device.
  • the constant-entry device and the separating device may be omitted in some dunnage conversion machines.
  • the capture device 42 includes a pair of latches or catches 52 (shown in multiple superimposed positions) laterally spaced to support and capture respective ends of the stock roll spindle 44.
  • the catches are biased by a spring 54 to a support position against catch stops 56 mounted to the bracket walls 40, although the catches could be otherwise biased to the support position, such as by gravity.
  • Each catch swings about a pivot point 60 and generally has an L-shape, one leg 62 extending radially outwardly from the pivot point and the other or outer leg 64 angling downwardly.
  • the distal end of the outer leg 64 extends back on itself to form a hook portion 65 for catching and for rotatably supporting an end of the stock roll spindle therein.
  • the outer surface of the hook portion has an abutment portion 67 which engages stop 56 and a cam surface 69 on the abutment portion.
  • the cam surface 69 is positioned to be engaged by the stock roll spindle as the same is raised by the stock roll loading assembly 14.
  • the dunnage conversion machine is rotated clockwise ninety degrees as will be further explained hereafter, from the position shown in Fig. 2, for example, to a position wherein the upstream end 20 of the machine 12 is aligned with loading assembly 14, as shown in Fig. 8.
  • the stock roll spindle 44 engages the cam surface 69 and progressively urges the catches 52 to swing about the pivot points 60 to provide clearance for the spindle to pass the distal ends of the hook portions 65, each catch 52 functioning as a pawl.
  • the catches return to the biased support position against the catch stops 56 and the spindle is lowered whereupon the ends of the spindle are captured in the bight of the hook portions with the spindle rotatably supported therein.
  • the stock supply assembly 32 generally also includes a brake mechanism 66 to prevent or minimize stock roll overrun.
  • the problem of overrun results from the rotational momentum of the stock roll 16 causing the stock roll to continue rotating after the stock material is no longer being fed into the machine 12. This becomes a problem when the machine resumes the feeding of the stock material: as the slack is taken up, the tension in the stock material increases sharply and can lead to tearing in the stock material.
  • the brake minimizes this problem by providing a frictional drag on the stock roll.
  • the brake mechanism 66 includes an axle 70 rotatably mounted between the bracket walls 40 and extending substantially parallel to the stock roll spindle 44, a brake snubber or lever 72 (shown in multiple superimposed positions) extending from the axle to engage or to snub up against an outer surface of the stock roll 16, a crank 74 (also shown in multiple positions) attached to an end of the axle, and a spring 76 connected between one of the bracket walls 40 and a distal end of the brake lever 72 to bias the brake lever against the stock roll 16. For a large diameter stock roll, the spring is stretched to apply a larger force through the brake lever to the surface of the stock roll 16.
  • the point of entry of the stock material into the separating device remains constant. This consistency is believed to facilitate the production of a uniform dunnage product. From the constant- entry device, the multi-ply sheet stock material passes to the separating device.
  • the separating device 50 separates the plies of paper prior to their passing to the conversion assembly and includes a plurality of separating members.
  • the number of separating members shown as three in the drawings - an upper member 80, an intermediate member 82, and a lower member 84 ⁇ generally corresponds to the number of plies or webs of stock material.
  • the conversion machine 12 generally may use any type of conversion assembly for converting the sheet stock material into a lower density dunnage product.
  • Any type of conversion assembly for converting the sheet stock material into a lower density dunnage product.
  • Several exemplary cushioning conversion machines and conversion assemblies are disclosed in the aforementioned commonly owned and previously incorporated references, including U.S. Patent Nos. 4,750,896; 4,884,999; and/or 5,607,383.
  • the pad discharge assembly 36 is mounted to the downstream end 22 of the machine 12 to direct dunnage products 30 to the awaiting tote 26 on the conveyor 24 for use as a dunnage pad.
  • the pad discharge assembly is in the form of a sloped chute formed by a bottom slide member 85 and side wall members 86 connected to lateral sides of the bottom slide member to laterally guide the dunnage product as it is caused by gravity to slide down the bottom slide member of the chute.
  • the chute also has a chute extension 87 slidably and adjustably connected to the downstream end of the chute to further guide the dunnage product.
  • the chute extension has a bottom slide extension 88 and lateral side wall extensions 89 connected to lateral sides of the bottom slide extension.
  • an initial dunnage pad is held by the machine 12, the chute 36 and/or a selected surface friction of the bottom slide member 85 until a succeeding pad pushes the initial dunnage pad down the chute, the pad continuing down and off the chute under the influence of gravity.
  • the downstream-most edge of the bottom slide member 85 or the bottom slide extension 88 forms a pivot line 90 about which the dunnage pad pivots as it is caused by gravity to slide down chute to fall toward the tote 26 on the conveyor 24.
  • the side wall extensions 89 have further directing portions in the form of laterally spaced apart vertical walls 91 (with no bottom surface between the vertical walls), extending beyond and below the end of the bottom slide extension 88.
  • the vertical walls serve as restraining walls that cause the pad to fall in a predetermined trajectory (relative to the tote) by inhibiting any tendency in the pad 30 to skew to the lateral left or right sides of the tote (above or below the tote illustrated in Fig. 4C). Since the dunnage pad 30 generally has a relatively uniform density, when more than half the pad extends beyond the pivot line 90, the pad will pivot about the pivot line and fall into the tote 26 that is positioned therebelow on the conveyor 24. For example, a twenty inch (about 50 cm) pad should pivot just past its midline of ten inches (about 25 cm). The sloping length of the chute should be at least ten inches (about 25 cm).
  • the chute extension 87 should be adjusted so that the pivot point is about fifteen inches (about 38 cm) from an exit of the machine 12 so that the dunnage pad falls into the tote on the conveyor for packing at a remote location.
  • the position of pivot line 90 is changed by a distance of one-half of the change of the pad length.
  • the chute extension 87 is adjusted relative to slide member 85 such that a twenty inch (about 50 cm) long pad 30 will pivot at pivot line 90 and have a trajectory so that its leading edge will land substantially adjacent to an inside front edge of the tote 26 as illustrated in Fig. 4C. If it is now desired that a thirty inch (about 76 cm) long pad should have a trajectory
  • bottom slide member 85 or side wall members 86 can be added to bottom slide member 85 or side wall members 86 so that the machine operator can easily make the necessary adjustment of the position of the pivot line 90.
  • automatic adjustment can be achieved via motorized pivot line adjustment, for example via a solenoid (not shown) integrated with the machine pad length control.
  • the machine 12 is mounted to means for rotating same, such as a turntable 92, to rotate the machine and the stock supply assembly 32 to a position more convenient for loading a stock roll thereon, such as a position in which the stock roll assembly 32 is not located over the conveyor 24.
  • a turntable 92 the machine is mounted on a stand 93 at an elevated position above the conveyor.
  • the stand has four vertically adjustable legs 94 (as shown in Figs. 2 and 4) which adjustably support the machine at any of a plurality of elevated positions.
  • the turntable 92 allows the machine to be rotated from an operating position (as shown in Fig. 1), wherein the stock supply assembly 32 is aligned with and is located over the conveyor, to a loading position (Fig. 8) wherein the stock supply assembly is aligned with and is positioned to accept a stock roll 16 from the stock roll loading assembly 14.
  • the turntable 92 includes a base plate 96 mounted to the stand 93, a mounting plate 100 attached to the machine 12 and is rotatably connected to the base plate.
  • a plurality of bearings 102 is mounted between the base plate and the mounting plate to support the machine and facilitate its rotation between the operating position and the loading position.
  • the turntable also has a locking pin 104 for locking the turntable in the desired position.
  • a lever arm 106 extending outwardly from a central portion of the turntable, forms part of a linkage for engaging and releasing the locking pin 104.
  • the means for moving the machine may include a carriage mounted to the machine for movement along a set of tracks, a mounting assembly such as is shown in commonly owned U.S. Patent No. 5,730,696 which is hereby incorporated in its entirety, or other devices for moving, rotating or pivoting the machine between the operating position and the loading position which may or may not provide different orientations of the machine.
  • the machine may be used exclusively without means for moving the machine. In such an installation the operating position and the loading position are the same. Turning to Figs. 1-3 generally and Figs.
  • the stock loading assembly 14 is positioned such that when the dunnage conversion machine 12 is in the loading position (Fig. 8), the stock loading assembly is located below the stock supply assembly 32 of the machine 12.
  • the stock loading assembly includes a magazine 110, and an elevator 112 which raises a stock roll 16 from the stock roll receiving position 18 to an elevated loading position 19 to load the stock roll onto the machine.
  • the magazine includes a frame 114 formed of vertical members 116 and interconnecting cross members 118.
  • the elevator includes a holder in the form of a cradle 120 which supports a stock roll, and a lift 122 which raises the cradle to the elevated loading position.
  • the lift may be any type of device which can raise the cradle to an elevated position, such as a hydraulic lift or a chain drive lift.
  • An exemplary commercial lift or stacker is a Presto- brand EL-766 stacker, available from Lee Engineering of Carrollton, Texas.
  • the illustrated cradle 120 has upper walls which form a V-shape trough.
  • the walls of the trough may have reduced-friction surfaces or bearings which facilitate axially loading a stock roll 16 into the trough, such that the stock roll can be moved axially into the cradle from a stock roll transport (not shown), for example.
  • the stock roll spindle 44 can be inserted in the stock roll either before or after the stock roll is loaded into the cradle.
  • the stock roll assembly 32 may be utilized to load single stock rolls 16, or with magazine 110 for retaining an array of vertically arranged stock rolls 16.
  • magazine 110 includes one-way latches 124 at one or more elevated positions that allow the ends of the spindle 44 to pass, but prohibit return movement, as the elevator raises the stock roll past the latches 124 and then returns to the stock roll receiving position 18.
  • the stock loading assembly 14 may also include a sensor 126, which senses a stock roll at the elevated loading position 19, for elevator control purposes.
  • the lift 122 can either transport the cradle 120 and the stock roll 16 from the stock roll receiving position 18 to the elevated loading position 19 for loading the stock roll onto the machine 12, or if a storage magazine 110 is utilized, the lift can return the cradle to the stock roll receiving position, leaving the stock roll supported at an intermediate elevated position 125 by the one-way latches 124 of the magazine 110.
  • the stored stock roll is held at sufficient elevation that a further stock roll can be loaded onto the cradle without interference from the stored stock roll.
  • the further stock roll then is raised on the cradle, thereby also raising the stored stock roll which is supported from below by the further stock roll.
  • a plurality of stock rolls can be stored in the magazine for sequential use.
  • the cradle will support the stack of already stored stock rolls such that the topmost stock roll ultimately is loaded onto the machine.
  • the sensor 126 serves an important function in the case of multiple stored stock rolls since the lift does not raise the cradle 120 all the way to the loading position 19, but only a distance sufficient to load the top-most stock roll.
  • each is provided with vertical plates 127 which have inner vertical edges spaced apart to form a vertical guide channel 129 for the ends of the spindles 44 as the spindles are raised with the stock rolls during loading of the magazine and/or conversion machine.
  • the guide channel 29 maintains the stock rolls ve ⁇ ically aligned in the magazine when no longer supported in the cradle 120.
  • a stock roll 16 is loaded onto the cradle 120 at the stock roll receiving position 18 and the spindle 44 is inserted into the stock roll.
  • the lever arm 106 is engaged to release the locking pin 104 on the turntable 92, the machine 12 is moved or rotated to the loading position and the depleted spindle (if any) is removed from the catches 52.
  • the elevator 112 transports the cradle and the stock roll past the one-way latches 124 (if a storage magazine 110 is utilized) to the loading position 19.
  • the lateral ends of the spindle contact the cam surfaces 69 of the stock roll catches 52.
  • the spindle ratchets past the cam surfaces and the catches return to the operating position and abut the stops 56.
  • the sensor 126 will detect the stock roll spindle 44 having traveled past the catches and the elevator returns to the stock roll receiving position, depositing the stock roll spindle in the bight of the hook portions of the catches as it moves down.
  • the stock material can be fed into the machine, and the machine can be returned to the operating position, and locked in position.
  • the lift 122 can return to the stock roll receiving position after the stock roll spindle 44 passes the one-way latches 124 when the storage magazine 110 is utilized.
  • a further stock roll 16 then can be loaded onto the cradle 120 and raised, thereby also lifting the first stock roll.
  • the lever arm 106 can be engaged to release the locking pin 104, and the machine rotated from the operating position to the loading position. The lift can then raise the cradle, perhaps holding a yet another stock roll, thereby raising the already stored stock rolls as well.
  • the stock roll spindle 44 of the top or initial stock roll will then engage the cam surfaces 69 of the catches 52, and ratchet past the cam surfaces until the sensor 126 detects the presence of the stock roll spindle as the catches pivot about pivot points 60.
  • the lift will then return to the stock roll receiving position 18, after depositing the top stock roll spindle in the hook portions of the catches for use by the dunnage conversion machine.
  • the storage of multiple stock rolls in the storage magazine 110 if utilized, will reduce or eliminate delays in the packing process since the operator of the machine will not have to retrieve a stock roll from a remote location before loading a stock roll onto the machine.
  • the system and method of the present invention thus provide improvements in the way stock rolls are loaded onto a dunnage conversion machine, or onto a machine mounted in a elevated location that is difficult to access.

Abstract

L'invention porte sur un système (10) de conversion d'un rouleau de papier en un produit de calage pour emballages de densité relativement faible, et sur un dispositif chargement (14) en machine des rouleaux (16) de papier les transférant d'un emplacement de réception (18) à un emplacement élevé (19) de chargement. Ledit système de chargement comporte un élévateur à moteur qui soulève le rouleau, et facultativement, un mécanisme qui palpe puis saisit un porte-rouleau. L'invention porte également sur un magasin de stockage vertical d'un ou plusieurs rouleaux.
PCT/US2001/040950 2000-06-13 2001-06-13 Systeme de conversion en materiau de calage et procede de chargement de rouleaux de stockage WO2001096097A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001267080A AU2001267080A1 (en) 2000-06-13 2001-06-13 Dunnage conversion system and method with stock roll loader

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WO2003089163A2 (fr) * 2002-04-22 2003-10-30 Ranpak Corp. Systeme de transformation de materiaux de fardage
US7125375B2 (en) 2000-06-09 2006-10-24 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US7186208B2 (en) 2003-07-07 2007-03-06 Ranpak Corp. Cutterless dunnage converter and method
DE102018102621A1 (de) * 2018-02-06 2019-08-08 Sprick Gmbh Bielefelder Papier- Und Wellpappenwerke & Co. Vorrichtung zum manuellen oder maschinellen Erzeugen eines schlauchartigen Verpackungsmaterials und Packstation
TWI716257B (zh) * 2020-01-10 2021-01-11 欣特實業股份有限公司 轉軸鎖定裝置

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US4750896A (en) * 1985-10-28 1988-06-14 Ranpak Corp. Method and mechanism for producing cushioning dunnage product
US5607383A (en) * 1994-07-22 1997-03-04 Ranpak Corp. Modular cushioning conversion machine
US5730696A (en) * 1995-06-07 1998-03-24 Ranpak Corp. Cushioning conversion machine selectively pivotable in a horizontal plane

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Publication number Priority date Publication date Assignee Title
US4750896A (en) * 1985-10-28 1988-06-14 Ranpak Corp. Method and mechanism for producing cushioning dunnage product
US5607383A (en) * 1994-07-22 1997-03-04 Ranpak Corp. Modular cushioning conversion machine
US5730696A (en) * 1995-06-07 1998-03-24 Ranpak Corp. Cushioning conversion machine selectively pivotable in a horizontal plane

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7850589B2 (en) 2000-06-09 2010-12-14 Ranpak Corp. Dunnage conversion machine with wide paddles
US8999490B2 (en) 2000-06-09 2015-04-07 Ranpak Corp. Dunnage product with crumpled multi-lobed undulating body
US7125375B2 (en) 2000-06-09 2006-10-24 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
US8177701B2 (en) 2000-06-09 2012-05-15 Ranpak Corp. Dunnage conversion machine with translating grippers, and method and product
AU2003225094B2 (en) * 2002-04-22 2009-02-19 Ranpak Corp. Dunnage converter system
WO2003089163A2 (fr) * 2002-04-22 2003-10-30 Ranpak Corp. Systeme de transformation de materiaux de fardage
CN1305595C (zh) * 2002-04-22 2007-03-21 兰帕克公司 具有穿孔传递构件的垫料转换机
WO2003089163A3 (fr) * 2002-04-22 2004-02-05 Ranpak Corp Systeme de transformation de materiaux de fardage
US7407471B2 (en) 2003-07-07 2008-08-05 Ranpak Corp. Cutterless dunnage converter and method
US7186208B2 (en) 2003-07-07 2007-03-06 Ranpak Corp. Cutterless dunnage converter and method
US9370914B2 (en) 2003-07-07 2016-06-21 Ranpak Corp. Cutterless dunnage converter and method
DE102018102621A1 (de) * 2018-02-06 2019-08-08 Sprick Gmbh Bielefelder Papier- Und Wellpappenwerke & Co. Vorrichtung zum manuellen oder maschinellen Erzeugen eines schlauchartigen Verpackungsmaterials und Packstation
US11897654B2 (en) 2018-02-06 2024-02-13 Sprick Gmbh Bielefelder Papier-Und Wellpappenwerke & Co. Apparatus for the manual or machine production of a tube-like packaging material and packing station
TWI716257B (zh) * 2020-01-10 2021-01-11 欣特實業股份有限公司 轉軸鎖定裝置

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WO2001096097A3 (fr) 2002-05-02

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