EP3090953A1 - Station de coupe pour une machine d'emballage en bande - Google Patents

Station de coupe pour une machine d'emballage en bande Download PDF

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Publication number
EP3090953A1
EP3090953A1 EP16000932.0A EP16000932A EP3090953A1 EP 3090953 A1 EP3090953 A1 EP 3090953A1 EP 16000932 A EP16000932 A EP 16000932A EP 3090953 A1 EP3090953 A1 EP 3090953A1
Authority
EP
European Patent Office
Prior art keywords
clamping plate
cutting
sealed packages
cutting station
lower clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16000932.0A
Other languages
German (de)
English (en)
Other versions
EP3090953B1 (fr
Inventor
Craig R. Bonneville
Daryl W. Shackelford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alkar RapidPak Inc
Original Assignee
Alkar RapidPak Inc
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 Alkar RapidPak Inc filed Critical Alkar RapidPak Inc
Publication of EP3090953A1 publication Critical patent/EP3090953A1/fr
Application granted granted Critical
Publication of EP3090953B1 publication Critical patent/EP3090953B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/065—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting by punching out
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4481—Cutters therefor; Dies therefor having special lateral or edge outlines or special surface shapes, e.g. apertures

Definitions

  • the present disclosure relates to assemblies and methods for contour cutting of a continuous chain of packages formed and sealed in an automated web packaging machine.
  • this invention relates to a cutting station for separating a plurality of packages from a continuous chain of sealed packages according to claim 1.
  • the invention also relates to an indexing motion packaging machine comprising such a cutting station according to claim 14.
  • the invention finally relates to a method of producing a plurality of severed packages according to claim 15.
  • Web packaging machines are known in the prior art as disclosed, for example, in US 5,170,611 A and US 5,205,110 A which are herein incorporated by reference in entirety.
  • a web transport conveyor transports a lower flexible web from upstream to downstream through a series of stations receiving a product in a lower web package at a loading station, and closing the package with an upper flexible web at a closing station.
  • side by side closed product filled packages are separated at a cutting station into individually formed rectangular or substantially rectangularly-shaped packages by longitudinal and cross cutting mechanisms.
  • Such contour cutting is particularly useful when joining packages which are round, curved or irregularly shaped.
  • One of the challenges faced in providing contour cut packages is the expense of wasted web material incurred in the cutting and separating process.
  • the present invention arose during development efforts directed towards the provision of a contour cutting station in a web packaging machine which forms packages in an efficient and economical manner with a focus on reducing the amount of waste or trim scrap incurred during cutting and separating of the packages.
  • the object of the present invention is to desigh and construct a cutting station for an automated packaging machine which provides a more efficient web material utilization and reduced waste.
  • the cutting station includes a cutting head having a top plate, a blade holder movably mounted relative to the top plate and formed with a plurality of cutting blades configured in a nested arrangement to form closed curved contours for producing curved cuts in the continuous chain of sealed packages, and an upper clamping plate for receiving the cutting blades.
  • a lifting arrangement having a lower clamping plate is mounted for movement relative to the upper clamping plate for clamping the continuous chain of sealed packages between the upper clamping plate and the lower clamping plate.
  • the lower clamping plate is constructed to receive the cutting blades such that the cutting blades cut through the continuous chain of sealed packages to form $evered individual sealed packages having contours corresponding to the contours of the blades.
  • the lower clamping plate is formed with a plurality of recesses configured in a nested arrangement of closed curved contours continuously aligned with and corresponding in shape to the closed curved contours of the cutting blades for receiving the severed sealed packages.
  • the present invention also relates to an indexing motion packaging machine according to claim 14 having a web transport conveyor transporting a web of packaging material through a series of stations including a forming station for forming at least one pocket in the web.
  • a loading station is provided for placing a product in the pocket and a closing station is provided for closing and joining the web with another web of packaging material so that the joined webs form a continuous chain of sealed packages.
  • a cutting station according to claim 1 and, optionally, any one of the claims 2 to 13 is provided for separating the continuous chain of sealed packages.
  • the present invention also relates to a method of producing a plurality of severed packages from a continuous chain of sealed packages according to claim 18.
  • the method steps of this method are:
  • an indexing motion packaging machine 2 includes a web transport conveyor for transporting a lower web of flexible packaging material along a direction of transport from upstream to downstream locations through a series of stations including a forming station 4 for forming at least one pocket in the web, a loading station 6 for placing food product in the pocket and a closing station 8 for closing the pocket with an upper web of flexible packaging material to form a continuous chain of sealed packages.
  • the machine 2 also includes a cutting station 10 for separating the closed pockets into individual food containing packages.
  • the various components of the machine 2 are mounted to a frame supported above the ground by a series of legs.
  • a supply roll supplies each web by means of an unwind shaft.
  • An unwind motor drives sets of rollers to safely pull the web from the supply roll and along the conveyor in an indexing manner and to allow a series of operations at the forming station 4, the loading station 6, the closing station 8 and the cutting station 10 for creating a packaged product.
  • Figs. 2-5 illustrate the cutting station 10 used to cut and separate a continuous chain of sealed product filled packages into individual contour cut packages by means of a singular cutting motion.
  • the cutting station 10 includes a cutting head 12 having a planar top plate 14 connected, such as by fasteners 15, to depending side members 16, 17.
  • a blade holder 18 carrying a plurality of dependent cutting blades 20 ( Figs. 3 and 4 ) is mounted on rods 21 for selective vertical movement beneath the top plate 14.
  • the blade holder 18 is normally held upwardly against the bottom of the top plate 14 by a series of springs 22 passing through the top plate 14 and operatively connected to the blade holder 18.
  • a number of other spring biased devices 24 ( Figs. 4 and 11 ) are positioned between the top plate 14 and the blade holder 18.
  • An upper clamping plate 26 is suspended on rods 21 from the blade holder 18, and is configured to receive the blades 20 in a cutting operation to be described below in detail.
  • An air valve 28 and a series of pneumatic cylinders 30 are provided on the top plate 14 for purposes to be further understood hereafter.
  • the side members 16, 17 of the cutting head 12 are stationarily supported and fixed to a four post lifting arrangement including a pair of upper support bars 32, 34.
  • the upper support bars 32, 34 are fixed to upper ends of a pair of front upright posts 36, 38 and a pair of rear upright posts 40, 42.
  • Lower ends of the posts 36, 38 are connected to front support blocks 44, 46 positioned on front bearing blocks 48, 50 fixed to front ends of lower support bars 52, 54 which are anchored inside the frame of the packaging machine.
  • lower ends of the rear posts 40, 42 are connected to rear support blocks 56, 58 mouhted on rear bearing blocks 60, 62 fixed to rear ends of the support bars 52, 54.
  • a front shaft 64 has opposite ends mounted for rotation in the front bearing blocks 48, 50.
  • a rear shaft 66 has opposite ends mounted for rotation in the rear bearing blocks 60, 62.
  • a transverse support member 68 extends between mid-portions of the lower support bars 52, 54.
  • a mounting plate arrangement 70 is provided across the rear ends of the lower support bars 52, 54.
  • a servo motor 72 is positioned on the mounting plate arrangement 70, and is configured to selectively drive a pulley 74.
  • a drive gear 76 is mounted on the rear shaft 66, and is connected in driving relationship with the pulley 74 by a belt 78 such that operation of the servo motor 72 will rotate the rear shaft 66 back and forth.
  • a rear drive lever 80 is keyed to the rear shaft 66 inboard of drive gear 76, and a rear drive lever 82 is keyed to the rear shaft 66 opposite the drive lever 80.
  • the rear drive lever 80 has a cam follower 84 which rides between upper and lower rails of a rear track 86.
  • the rear drive lever 82 has a cam follower 88 which rides between upper and lower rails of a rear track 90.
  • An upper end of rear drive lever 82 is connected to a rear end of a turnbuckle shaft 92 extending forwardly to a front follower lever 94 which is keyed to the front shaft 64.
  • the front follower lever 94 has a cam follower 96 which rides between upper and lower rails of a front track 98.
  • a rear follower lever 100 is also keyed to the front shaft 64, and provided with a cam follower 102 which rides between upper and lower rails of a front track 104.
  • Each of the rear tracks 86, 90 and the front tracks 98, 104 is secured to lower rear and front portions of a pair of vertically moveable, longitudinally extending lifting bars 106, 108.
  • a rear lower crossbar 110 connects rear ends of the lifting bars 106, 108.
  • a rear upper cross bar 112 is joined to the rear lower crossbar 110, and has opposite ends connected to rear wear pieces 114, 116 which are configured to travel along rear posts 40, 42.
  • a front lower cross bar 118 connects front ends of the lifting bars 106, 108.
  • a front upper crossbar 120 is mounted on the front lower crossbar 118, and has opposite ends attached to front wear pieces 122, 124 which are designed to move along front posts 36, 38.
  • a transverse support member 126 is provided between mid-portions of the lifting bars 106, 108.
  • a lower clamping plate 128 is joined to a pair of depending sidewalls 130, 132 which are interconnected at lower ends by a bed 134.
  • Connecting rails 136, 138 are provided on the bottom of the bed 134, and are joined to inside surfaces of the lifting bars 106, 108 between the rear crossbars 110, 112 and the front crossbars 118, 120.
  • the lower clamping plate 128 is movable towards and away from the upper clamping plate 26. More specifically, the lower clamping plate 128 is movable between a closed position and an open position into and out of clamping engagement with a continuous chain of sealed product filled packages 137 conveyed between the upper clamping plate 26 and the lower clamping plate 128 in the direction of arrow A ( Fig. 5 ) after which a cutting operation occurs to provide separate individual packages 139.
  • a key feature of the present disclosure resides in the provision of a nested and contiguous arrangement of the cutting blades 20 mounted on the blade holder 18.
  • the blades 20 are maintained in a desired alignment by means of guide blocks 140 which are engaged against rear walls 20f of the blades 20.
  • the blades 20 are also held in aligned position by rods 142 which are passed through a series of recesses 144 formed in the blades 20.
  • rods 142 which are passed through a series of recesses 144 formed in the blades 20.
  • nuts are provided on the ends of the rods 142.
  • Each blade 20 is formed with a serrated cutting edge 146 completely around its periphery.
  • the blades 20 are formed as particularly bent kidney-shaped guillotine blades which are arranged in a two-by-five die pattern matrix or array to provide ten individual packages with peripheral contours shaped similar to the blades 20 in a single cutting motion upon indexing and clamping the continuous chain of sealed packages between the upper and lower clamping plates 26, 128.
  • each longitudinally extending row of nested and contiguous blades 20 in the example shown include open crescent-shaped blades 20a, 20b, 20c, 20d, and a closed kidney-shaped blade 20e.
  • Rear walls 20f of the blades 20b, 20c, 20d are nested and project into mouths 20g of adjacent blades 20a, 20b, 20c.
  • the rear wall 20f of closed blade 20e is nested and projects into the mouth 20g of blade 20d.
  • similarly shaped receiving structure for the particularly shaped blades 20 is formed in the upper clamping plate 26 and the lower clamping plate 128 to enable the desired separation of the contour cut packages.
  • the upper clamping plate 26 is formed with two large contoured recesses 148, 150 suitably configured to matingly receive the nested arrangement of blades 20 which depend from the blade holder 18.
  • a kidney-shaped internal clamping plate 152 is designed to be matingly received within the inner surface of each blade 20, and is connected to lower rod casing 154 ( Figs. 12 and 13 ) on each pneumatic cylinder 30.
  • the bottom of each internal clamping plate 152 is formed with an annular groove 156 for receiving and retaining a gasket 158 ( Figs. 9-13 ).
  • An extractor plate 160 is normally held within a recess 162 formed in the bottom surface of each internal clamping plate 152.
  • the extractor plate 160 is connected to a rod 164 of each pneumatic cylinder 30, and passes through an opening 166 ( Figs. 9 and 10 ) formed in the internal clamping plate 152.
  • the lower clamping plate 128 is constructed with a plurality of kidney-shaped recesses 168 which are designed to be continuously aligned beneath the internal clamping plates 152, and the extractor plates 160 mounted in the upper clamping plates 26. As best seen in Figs. 9, 10 and 14 , the lower clamping plate 128 is provided with blade receiving grooves 170 for receiving the cutting edges 146 of the blades 20 during a cutting and separating operation on the sealed packages formed on the packaging machine. Upper edges 172 of the lower clamping plate 128 located inwardly of the grooves 170 define clamping surfaces which are aligned with the gaskets 158 positioned in the upper clamping plate 26. Upper planar surface 174 ( Fig. 14 ) of the lower clamping plate 128 forms a further clamping surface which is aligned with a lower planar surface 176 on the upper clamping plate 26.
  • the air valve 28 is mounted on the top plate 14, and provides, by means of a conduit 178, a source of pressurized air to a bladder 180 located between the bottom of the top plate 14 and the top of the blade holder 18. Adding pressurized air to the bladder 180 inflates and expands the bladder 180.
  • the outer surfaces of the bladder 180 push the blade holder 18 away from the top plate 14 which simultaneously compresses the springs 22 and the spring biased devices 24, and forces the blades 20 downwardly into the grooves 170 in the lower clamping plate 128.
  • Evacuating pressurized air from the bladder 180 deflates and contracts the bladder 180 such that the blades 20 are retracted from the grooves 170 and the blade holder 18 is returned towards the top plate 14 aided by the return force of the springs 22 and the devices 24.
  • the packaging machine indexes and temporarily fixes in position the continuous chain of side-by-side closed and connected packages 137 in the two-by-five array as formed and sealed at the forming and closing stations 4, 8, respectively, upstream of the packaging machine 2 between the upper clamping plate 26 and the lower clamping plate 128 in its open position as depicted in Fig. 5 .
  • each of the packaged products is aligned with a blade 20, an internal clamping plate 152, and an extractor plate 160 in the upper clamping plate 26, and a recess 168 in the lower clamping plate 128.
  • Servo motor 72 is then operated as described above to move the lower clamping plate 128 upwardly so that the continuous chain of sealed packages is clamped between the upper clamping plate 26 and the lower clamping plate 128 in the closed position.
  • the upper web of the sealed packages is tightly clamped by the lower planar surface 176 of the upper clamping plate 26 as well as by the gaskets 158.
  • the lower web of the sealed packages is tightly clamped against the inside edges 172 and the upper planar surface 174 of the lower clamping plate 128.
  • the pneumatic cylinders 30 are actuated to move the rod 164 and the connected extractor plates 160 downwardly so that the severed individual contoured cut packages 139 will drop by gravity through the recesses 168 of the lower clamping plate 128.
  • the individual contoured cut packages 139 are designed to fall upon a discharge conveyor (not shown) which runs longitudinally along the top of bed 134.
  • the inventors have found that greater efficiency and economy is achieved in providing the individual contoured cut packages as a direct result of the nested die pattern of blades 20 which requires less film or web material, and results in a substantial reduction in trim scrap waste and operating cost.
  • the magnitude of the yearly savings in using the apparatus and method of the present disclosure can be understood by a typical example in which an existing die pattern comprised of similar kidney-shaped blades arranged in a two by five spaced apart matrix is compared with the two by five nested blade arrangement as disclosed above. With the existing die pattern of spaced a part blades, a total of 1,187.29 square inches of web material per index is required versus a total of 1,047.34 square inches of web material per index of the nested die pattern formed by the blades 20.
  • the cutting station 10 is configured for ease of maintenance when, for example, it is desired to inspect or replace the blades 20 or other operating elements in the cutting head 12.
  • the top plate 14 is pivotally mounted at a front edge relative to the side members 16, 17 by means of hinges 182 and hinge pins 184. Laterally extending handles 186 and U-shaped handles 188 are provided at a rear end of the top plate 14.
  • a pair of gas ballasted cylinder assemblies 190, 192 is mounted between inner surfaces of the side members 16, 17 and the bottom of the top plate 14.
  • top plate 14 Once fasteners 15 are removed from the top plate 14, a service operator can grasp the handles 186, 188 and pivot the top plate 14 with the blade holder 18 and the upper clamping plate 26 upwardly about the axes of the hinge pins 184. Beveled edges 194 ( Figure 11 ) are formed on the front ends of the side members 16, 17 to facilitate the pivoting motion.
  • the top plate 14 is provided with eye bolts 196 which can be connected to a lifting device when it is desired to remove the entire cutting head 12 from the cutting station 10.
  • the nested blade arrangement of the present disclosure has been found to be particularly useful in certain food and medical product packaging.
  • the present disclosure illustrates the nested arrangement of the blades 20 oriented such that web travel occurs in a direction oriented along lengths of the blades 20.
  • the present disclosure contemplates a similar nested arrangement of the blades 20 wherein web travel flows in a direction transverse to the lengths of the blades 20 as depicted in Figure 15 .
  • the present disclosure further contemplates other nested arrangements of blades having other contours than described and illustrated herein which correspond to the desired contours of packages formed and sealed on the packaging machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP16000932.0A 2015-05-08 2016-04-26 Station de coupe pour une machine d'emballage en bande Not-in-force EP3090953B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562158739P 2015-05-08 2015-05-08
US15/070,596 US20160325868A1 (en) 2015-05-08 2016-03-15 Contour cutting station for web packaging machine

Publications (2)

Publication Number Publication Date
EP3090953A1 true EP3090953A1 (fr) 2016-11-09
EP3090953B1 EP3090953B1 (fr) 2018-01-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16000932.0A Not-in-force EP3090953B1 (fr) 2015-05-08 2016-04-26 Station de coupe pour une machine d'emballage en bande

Country Status (2)

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US (1) US20160325868A1 (fr)
EP (1) EP3090953B1 (fr)

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