Including Overfolding Or Reverse Bending Patents (Class 493/310)
  • Patent number: 10196163
    Abstract: A filling machine for filling packaging containers made of cardboard composite material with products, in particular liquid foods, includes a gripper that removes a packaging jacket from a magazine only partially erected in the manner of a parallelogram by a guide and at least one of two retaining elements for accommodating an outer fold edge of the partially erected packaging jacket can be move back and forth between an initial position and an end position. The cross-section of the packaging jacket accommodated by the two retaining elements is rectangular in the end position of the movable retaining element.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: February 5, 2019
    Inventors: Klaus Baltes, Thomas Boehme
  • Patent number: 10167099
    Abstract: The present invention includes an apparatus (01) and a method for expanding and erecting collapsed or folded cardboard packagings (02) to a standing position. The method includes holding the topmost cardboard packaging (02), coming from above, at its top flat side (23) of a cardboard packaging wall (22) and removing it from a stack (41) of flatly collapsed cardboard packagings (02). Subsequently also holding the cardboard packaging (02), at its bottom flat side (24) from below, and increasing the vertical distance between the top flat side (23), and the bottom flat side (24), by oppositely pulling so far until the cardboard packaging (02) has been expanded. Then releasing the top flat side (23) of the cardboard packaging (02), and rotating the lying, expanded set of cardboard packaging (02) still being held at its bottom flat side (24), where the rotating is about a horizontal pivoting axis (13).
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: January 1, 2019
    Assignee: Krones Aktiengesellschaft
    Inventors: Alban Hutter, Wolfgang Fechter, Jens Losert
  • Patent number: 9636884
    Abstract: A box configuring tool includes a base having a planar surface, a first stop positioned at a first end of the base, and a second stop positioned at a second end of the base opposing the first end of the base. The tool also includes a pair of spaced-apart walls coupled to the base to define an open-ended chute along the base's planar surface. The open-ended chute is disposed between the first stop and the second stop. The open-ended chute has a tapered-width portion contiguous with a constant-width portion.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: May 2, 2017
    Inventor: Otto M Stroud
  • Patent number: 9284076
    Abstract: An apparatus for collecting a flattened tubular box, for opening-out and transferring the tubular box towards a receiving station has a first member hinged to a frame, bearing first aspirating means. Second, third, and fourth hinged members and the frame forming a four-bar linkage. A fifth member, hinged to the fourth member, bears second aspirating means. An abutting member is arranged between the first member and the receiving station inferiorly of the tubular box. The apparatus is being designed such that when the tubular box is in the folding position, a second wall of the box can be intercepted by the second aspirating means and folded progressively with respect to the first wall, the first aspirating means disengage the first wall, and the box moved by the second aspirating means up to rest on the abutting member with a consequent complete opening-out of the tubular box.
    Type: Grant
    Filed: December 27, 2012
    Date of Patent: March 15, 2016
    Assignee: MARCHESINI GROUP S.p.A.
    Inventor: Giuseppe Monti
  • Publication number: 20150141229
    Abstract: A container erecting system includes a top engaging surface and a bottom engaging surface that fold a collapsed container such as a carton. The top engaging surface moves at a first speed in a downstream direction and the bottom engaging surface moves at a second speed in the downstream direction. The first speed is different from the second speed.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 21, 2015
    Inventors: Michael F. FLAGG, Bobby L. Miller, Jr., Rafe T. Patterson
  • Patent number: 8733621
    Abstract: A method of manufacturing containers of paper material for foodstuffs, in particular pastries, wherein the container comprises a single sheet portion of flexible paper material defining a flat bottom wall and a side wall emerging from the bottom wall. The container has a side wall comprising, in section, at least one curvilinear stretch (10) for defining a rounded or convex conformation of the side wall. The method contemplates a first step for making the bottom wall (2) provided with an upper surface (2a) and a lower surface (2b), and a side wall (3) emerging from the bottom wall (2) in such a manner that in cooperation with said bottom wall it defines a holding region (21) whose bottom consists of said lower surface (2b), and a second step of overturning the side wall on the opposite side relative to the bottom wall (2) for defining a cavity (7) having an upwards facing opening in the normal use position of the container.
    Type: Grant
    Filed: February 11, 2010
    Date of Patent: May 27, 2014
    Assignee: Novacart S.p.A.
    Inventor: Gianmario Anghileri
  • Publication number: 20110233223
    Abstract: A cup sleeve includes a planar sheet of material that defines a first support member, a second support member, a third support member, a fourth support member, a first ledge member, and a second ledge member. The first support member is adjacent to the first ledge member and the second ledge member. The second support member is positioned substantially opposite to the first support member and is adjacent to the first ledge member and the second ledge member. The first support member and the second support member are configured to rotate to follow an outer contour of a cup when the cup is inserted into a center region of the sleeve in a direction that is normal to a plane defined by the sleeve in an unassembled configuration. The first ledge member and the second ledge member are configured to stay in substantially the same plane as the plane defined by the unassembled sleeve when the cup is inserted into the center region of the sleeve.
    Type: Application
    Filed: March 26, 2010
    Publication date: September 29, 2011
    Inventors: Matthew R. Cook, Kurt M. Wolf, Thomas Fu
  • Patent number: 7841975
    Abstract: By forming a resin sheet or a metal sheet, an angular-box-shaped bag main body having gore portions on surrounding side faces to ensure its height is formed. A valley line is formed in an intermediate portion of each of the gore portions in a height direction. A triangular overlaid and folded portion is formed in an end of each of the gore portions on each of the surrounding side faces with each corner portion of the angular-box-shaped bag main body being sandwiched between one surrounding side face and another surrounding side face adjacent to the one surrounding side face in which the gore portion is folded in an overlaid manner in the overlaid and folded portion at a same time when another gore portion on another surrounding side face is folded. The angular box-shaped bag main body is folded so as to be in a flat state by allowing each of the gore portions to be folded in a manner to form a valley line along the folded line.
    Type: Grant
    Filed: July 28, 2008
    Date of Patent: November 30, 2010
    Assignee: Autoliv Development AB
    Inventor: Koji Korechika
  • Publication number: 20080300123
    Abstract: A device for fully erecting a flat collapsed carton into an erected carton sleeve, the device comprising an arm linkage comprising a first arm (20a, 20b) coupled to a shaft (12), said shaft (12) being coupled to a drive means to achieve rotational movement of the arm linkage, a second arm (24a, 24b) pivotally coupled at one end to the first arm (20a, 20b) and at an opposite end further coupled to at least one suction device (16,17,18), said suction device actuated to engage a panel of a flat collapsed carton, and a third arm (22a, 22b) coupled to the shaft (12) such that the second and third arms are maintained substantially parallel to one another, the second and third arms being coupled to one another by a support arm (26a, 26b), which support arm is substantially parallel to the first arm (20a, 20b), and wherein the first and third arms are driven at different angular velocities to effect construction of a flat collapsed carton into an erected carton sleeve.
    Type: Application
    Filed: September 12, 2006
    Publication date: December 4, 2008
    Inventor: Jean-Christophe Bonnain
  • Publication number: 20080254963
    Abstract: A carton flap gripping system including an adjustable pin holder is provided.
    Type: Application
    Filed: June 19, 2008
    Publication date: October 16, 2008
    Inventor: Peter Zepf
  • Patent number: 7422552
    Abstract: A carton flap gripping system including an adjustable pin holder is provided.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: September 9, 2008
    Assignee: Wexxar Packaging, Inc.
    Inventor: Peter Zepf
  • Patent number: 7361130
    Abstract: A system for the production and subsequent palletizing of tube segments, bags, or sacks has at least one functional unit for production of tube segments, bags, or sacks, at least one device for depositing and stacking, which places and stacks the finished tube segments, bags, or sacks, and at least one storage element such as a palette, in which the stack can be deposited. The system has at least one alignment unit for the stack of the tube segments, bags, or sacks, which reduces the mutual deviations of the edges of the tube segments, bags, or sacks.
    Type: Grant
    Filed: May 3, 2005
    Date of Patent: April 22, 2008
    Assignee: Windmoeller and Hoelscher
    Inventors: Ralf Ahlers, Hans-Dieter Welp, Burkhard Schliek
  • Patent number: 7329218
    Abstract: The feed apparatus for feeding container blanks into a container forming machine comprises a hopper at or near its first end for holding a plurality of blanks, a selecting mechanism for selecting one of the blanks, a moving mechanism to move the blanks toward the elevated second end and then the machine and a transferring mechanism for rotating the blank from its angled direction to a substantially vertical direction for placement at the machine's receiving station. Preferably, the moving mechanism comprises a pair of parallel chains interconnected by a shaft having a gripping mechanism configured to securely grip the blank. A pivot mechanism pivots the shaft and the gripping mechanism, which is selectively opened to grip the blank below the hopper and release the blank at the machine. Laminating, folding and compressing components are provided to add adhesive, fold and then compress sections of the blank before reaching the machine.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: February 12, 2008
    Inventor: Raymond George Montague Kisch
  • Patent number: 7179216
    Abstract: An apparatus in a folding box gluing machine has a catch hook mounted such that it can rotate about an axis in order to initiate a leading fold in a product. The apparatus further has a restoring device for the catch hook. The restoring device has at least one elastic element, the axis of the catch hook is connected to the elastic element by a rolling belt.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: February 20, 2007
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Hartmut Klapp, Wolfgang Diehr, Klaus Naber
  • Patent number: 6991592
    Abstract: A method for folding a polymeric flat bottom bag. The process includes, in general, opening the partially folded bottom of the unfinished bag, pulling the bag bottom taught in the transverse direction, and forming a fin where the two material edges join. A sharp crease is formed between the fin and the base portions of the bag bottom, and the fin is sealed. The fin is creased and sealed while the bag is moving in its transverse direction. The bag's direction is changed, so that the bag is moving in its longitudinal direction, and the fin flaps then folded against the base of the bag bottom. The flaps are sealed to the bottom, resulting in a flat bottom bag. A label may be added to the bottom of the bag.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: January 31, 2006
    Assignee: Genpak LLC
    Inventors: James Trygve Wold, Edward Stanley Madej
  • Patent number: 5605030
    Abstract: A carton end closure score line breaker mechanism for pre-breaking the top closure score lines before the filling and closing and sealing steps does not include a center post, or any components which extend into the inside of a carton end closure, eliminating any chance for contamination inside the end panels. The center-free breaker mechanism includes a pair of blades each having an arcuate center section for caving in the adjacent end panel and, thereby, bulging the side end panels and pulling in the oppositely disposed panel, and a blade fork and another pair of blades, wherein the blade fork includes two longitudinal, parallel blades which slide across the side body panels, and each blade of the other pair is a flat-faced bar for engaging the adjacent end panel and causing the side end panels to project outwardly completing the pre-breaking of all end closure score lines.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: February 25, 1997
    Assignee: Elopak Systems AG
    Inventor: Frank A. Rodocker
  • Patent number: 5562581
    Abstract: The device has a rotating member including pulleys that and joined to a belt conveyor along which flat folded cases advance. Suction cups are mounted on shafts situated along the periphery of the rotary member and a coaxial drum, rotating in synchrony with the pulleys, carries the shafts which are made to oscillate by crank means. The drum also supports rocking levers which are in engagement with a cam and cause cranks to rotate. Further suction cups, situated at the outlet of the feeding line, are moved in phase relation with the previous suction cups between a gripping position, in which the suction cups grip a flat folded case on opposite sides, and a position in which adjacent wall panels of the case are opened. Belt conveyors receive the opened case and trail it along a packaging line.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: October 8, 1996
    Assignee: I.M.A. Industria Macchine Automatiche S.p.A.
    Inventors: Tagliaferri Roberto, Marzocchi Paolo
  • Patent number: 5533954
    Abstract: A one-piece corrugated tray is formed of a blank of sheet material wherein a filler is sandwiched between an lower liner and an upper liner. The blank is slit scored transversely to define end panels, end walls, dividing walls, and floor panels between successive walls. The blank is then power rolled so that the blank is folded up ninety degrees at front slit scores and folded down one-hundred-eighty degrees at front slit scores. The resulting tray has double-thickness walls and double-thickness floors. Trays of this construction can be used for handling and shipping decorative automotive body panels and other items of manufacture that must be protected from rubbing one another or lapping over one another.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: July 9, 1996
    Inventor: Alan R. Zogg
  • Patent number: 5382217
    Abstract: A box tube blank having first, second, third, and fourth panels joined together at first, second, third, and forth creases is broken in starting with the blank oriented in a starting plane with the first and third creases superposed and the second and fourth creases outermost. First the second and fourth creases are pressed toward each other parallel to the starting plane to spread the first and third creases away from each other until the second and fourth creases are juxtaposed and the first and third creases lie outermost and the blank lies generally perpendicular to the starting plane. Then the tube blank passes between an upstream pair of parallel rollers extending perpendicular to the starting plane to compress it parallel to the starting plane.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: January 17, 1995
    Assignee: Jagenberg Aktiengesellschaft
    Inventor: Hermann Namowitz
  • Patent number: 5194065
    Abstract: A carton squaring mechanism in a carrier for effectuating and maintaining a four-sided side-seamed open-topped carton in a squared configuration. The carrier includes a plurality of compartments, wherein adjacent compartments are separated by a pair of spaced-apart, laterally oriented, parallel fixed guides, a first off-center guide secured to one side of the carrier so as to be positioned closely adjacent to one of one pair of parallel guides and perpendicular to the planes of the latter. Each of the fixed guides has downwardly converging lower edges formed thereon for piloting the carton into the compartment. Each carton is first squared by engagement with oppositely disposed side rails, and then maintained square by the above referenced guides.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: March 16, 1993
    Assignee: Elopak Systems A.G.
    Inventors: Frank D. Risko, Barry C. Owen
  • Patent number: 5193328
    Abstract: A method and device for folding packing blanks along preformed bend lines, whereby a blank, before being positioned with its intermediate portion contacting the product, and folded in a U about the product with two lateral portions contacting the same, is engaged by two gripping and strain-relieving devices by which the two lateral portions are oscillated by a given angle about respective bend lines connecting the lateral portions to the opposite edges of the intermediate portion.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: March 16, 1993
    Assignee: G. D. Societa' per Azioni
    Inventors: Silvano Boriani, Antonio Gamberini
  • Patent number: 5120295
    Abstract: Apparatus is provided for erecting tubular carton blanks from a flattened to an open tubular state and includes two blank erection stations positioned sequentially along a conveyor for conveying a succession of blanks to the stations. In each station a suction head is attached to a blank and moves the blank through a cycle from a blank collection position, through a blank lifting phase, then through a blank erecting phase in which the blank is pressed against an abutment member into force the blank to an erected condition. When the suction head reaches a blank releasing position, suction head is returned. The suction heads are carried by a link arm driven in a parallel movement by cams via pivot arms.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: June 9, 1992
    Assignee: Tetra Pak Holdings SA
    Inventor: Richard W. E. Mosse
  • Patent number: 5067937
    Abstract: A system for erecting boxes has a magazine holding supply of flattened boxes having panels separated at respective fold lines, a support wheel generally continuously rotating about an axis adjacent the supply, a grab on the support wheel, an unfolder on the wheel adjacent the grab, and a conveyor adjacent the wheel. The grab and the unfolder are pivotal on the wheel about a grab axis parallel to the wheel axis and defining thereabout an orbit and the conveyor has upper and lower elements defining parallel and vertically spaced upper and lower conveyor planes, and front and rear elements displaceable parallel to the planes therebetween and defining respective conveyor calls. The upper plane is generally tangent to the orbit of the grab axis.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: November 26, 1991
    Assignee: Uhlmann Pac-Systeme GmbH & Co. KG
    Inventors: Hans Aschaber, Rudolf Bailer, Fritz Fochler, Bernd Kleinstauber, Reinhold Ruf
  • Patent number: 5033975
    Abstract: A method and device are disclosed for raising rimpled and flattened parallelepipedic blanks to form rectangular parallelepipeds. A supply of flattened parallelepipedic blanks are rolled out in a first rolling direction through a pair of discharging rollers. Pressure is imparted on the flattened parallelepipedic blanks in a direction opposite to the first rolling direction by means of a pusher for opening the blank to nearly in a direction perpendicular to the rolling direction. The pusher is thereafter retracted in the first rolling direction to raise the blank to form a rectangular parallelepiped with a substantially square-shaped cross section. The formed blanks are thereafter unloaded from the device.
    Type: Grant
    Filed: August 23, 1989
    Date of Patent: July 23, 1991
    Assignee: AB Tetra Pak
    Inventor: Paul Traegaardh
  • Patent number: 4983154
    Abstract: Disclosed are carton assembling method and equipment for sucking and taking out flatwise folded cartons one by one from a magazine by means of suction cups, unfolding each carton squarely on a conveyance path while transferring it downward along a rotative path, and supplying the thus-unfolded cartons to an encasing machine by means of a conveyance mechanism. Each carton is held squarely by a pair of stoppers, utilizing its reaction force acting in the returning direction. Thereafter, the carton is reverse-folded against such reaction force and then unfolded again to remove the folding tendency of the carton acting in the folded direction, thereby permitting the carton to hold itself in a square shape. And at the time of reverse folding, the flaps of each carton are expanded so that a contents charging conveyor can be disposed in close proximity to the cartons.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: January 8, 1991
    Assignee: Tokyo Automatic Machinery Works, Ltd.
    Inventors: Toshio Nagahashi, Kiyoshi Yamashita, Minoru Sato
  • Patent number: 4908009
    Abstract: A corner forming unit of a package forming machine which employs an H-shaped guide over which the packaging material passes after it has been longitudinally sealed. A pair of rollers outside of the tube of material forms the edges of the packaging material into the H-shaped guide to form the corners of the material from which individual filled rectangular packages will be formed.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: March 13, 1990
    Assignee: Milliken Research Corporation
    Inventor: Yoshimitsu Yokoyama
  • Patent number: 4870804
    Abstract: Method of forming a parallelepiped container from a roll of packaging material by sequentially folding and sealing the longitudinal edge of the paper material, forming corners in the web of material, cutting the material into flat tubes, sealing the bottom of the tubes on a mandrel, filling the bottom sealed tube and sealing the top of the filled tube.
    Type: Grant
    Filed: November 22, 1988
    Date of Patent: October 3, 1989
    Assignee: Milliken Research Corporation
    Inventor: Yoshimitsu Yokoyama
  • Patent number: 4650450
    Abstract: The invention relates to apparatus for supplying wrapping elements (2, 57) comprising elongate portions of card (2) having a series of zones (6, 7, 8, 9), separated by transverse creases (a, b), and flaps (10) defined by creases (c) disposed longitudinally to the card (2). The apparatus comprises a first mechanism (14) and a second mechanism (50) for continuously transfering the pieces of card (2) which are orientated transversely to the path of the first mechanism and longitudinally with respect to the path of the second mechanism. The apparatus also comprises folding elements (42, 43, 46, 47, 55, 56) located along the paths of the two transfer mechanisms (14, 50) arranged to fold the zones (6, 7, 8, 9) and flaps (10) about the creases defining them out of a planar condition and subsequently to fold them back to cause them to return to the original coplanar condition. The pre-creased blanks so formed can be readily wrapped by conventional wrapping machines round soft articles (68) e.g.
    Type: Grant
    Filed: March 12, 1986
    Date of Patent: March 17, 1987
    Assignee: Azionaria Costruzioni Macchine Automatiche, A.C.M.A., S.p.A.
    Inventors: Franco Aiuola, Luciano Nannini
  • Patent number: 4573957
    Abstract: A system for the transport and raising of packing container blanks to be utilized in packing machines which convert flattened, tubular packing container blanks to filled and closed packages. A simple and space-saving arrangement of this invention comprises gripping elements (10) placed along a conveyer (5) which in a continuous movement take up a blank (1) from the conveyer and raise the same to a square cross-section and pass it on in raised position.
    Type: Grant
    Filed: February 24, 1984
    Date of Patent: March 4, 1986
    Assignee: Tetra Pak International AB
    Inventor: Alf Billberg
  • Patent number: 4493687
    Abstract: An arrangement for the raising and transporting of packing container blanks is used in a packaging machine of the type which converts tubular packing container blanks to filled and sealed packing containers. The arrangement has a carrier plate which by a plurality of suction heads grips a flattened packing container blank situated in a magazine and transports the same to a conveyor (4). During the transport the packing container blank is converted with the help of stationary supports, situated in the path of movement of the blank, so that it obtains a substantially square cross-section.
    Type: Grant
    Filed: March 2, 1982
    Date of Patent: January 15, 1985
    Assignee: Tetra Pak International AB
    Inventor: Gote L. Bernle
  • Patent number: 4493682
    Abstract: An apparatus and method for forming flat cut carton blanks into erected cartons with debowed carton side panels is disclosed. The apparatus includes a forming head receiving and directing a carton blank through forming guides. Pinching wheels rotatably secured adjacent the forming guides include a pinching notch with a leading edge projecting inwardly into the forming head path. The pinching notch engages the descending carton bottom and side panels to capture and pinch the fold lines and overbreak the side panels at the fold lines between the carton side and bottom panels. An inclined surface with a sharp creasing edge abutting the inside of the fold line assists the pinching notch in creasing the fold lines. An extension edge formed adjacent a trailing edge of the pinching notch completes the overbreaking action. A release edge formed adjacent the leading edge gently releases the carton side panels from the overbreaking position upon counter rotation of the wheel.
    Type: Grant
    Filed: January 5, 1982
    Date of Patent: January 15, 1985
    Assignee: Kliklok Corporation
    Inventors: John W. Bryson, William H. Hittenberger
  • Patent number: 4468214
    Abstract: In folding boxes forming a conveyor chain, rectangular, tubular carton blanks are introduced stepwise into two juxtaposed mirror-image designed folding stations. In the folding stations, the carton blanks are defomed by means of fingers and clamps so that their base surface is pulled into a parallelogram. The two edges forming the longer diagonal are pressed by means of stamping dies and by means of a counterholder and a stamping plate, respectively. After pressing, the carton blanks are pulled back into the folding boxes and are returned to their rectangular shape.
    Type: Grant
    Filed: May 11, 1982
    Date of Patent: August 28, 1984
    Assignee: SIG Schweizerische Industrie-Gesellschaft
    Inventor: Bruno Grundler
  • Patent number: 4464155
    Abstract: An apparatus and method for forming flat cut carton blanks into erected cartons with debowed carton side panels is disclosed. The apparatus includes a forming head receiving and directing a carton blank through forming guides, side walls engaging and supporting the carton side panels that bend into upright position relative to the carton bottom panel during descending movement through the forming guides. Presser fingers pivotally secured to the forming guides project inwardly into the forming head path. The presser fingers bend the side panels into cutout openings provided in the side walls to overbreak the side panels at fold lines between the carton side and bottom panels. An inclined surface with a sharp creasing edge abutting the fold lines enables the presser fingers to initially crease the fold lines and thereafter bend the carton side panels inwardly onto the inclined surface for controlled overbreaking movement.
    Type: Grant
    Filed: December 11, 1981
    Date of Patent: August 7, 1984
    Assignee: Kliklok Corporation
    Inventors: Peter C. Collura, Boyd D. Goda, Harvey N. Palagi
  • Patent number: 4331436
    Abstract: A device for erecting and countercollapsing boxes from preformed blanks comprises a carrier arm pivotally attached to a chain drive and guided by a generally oval track to engage at a feed station the back edge of a blank for pushing the same through a pair of parallel guide slots along a path to an erecting station defined by rotary carrier synchronized with the chain drive for revolving a stopper to have, upon the emergence of the blank from the guide slots, a distance from the slots' exit substantially equal to the width of the blank and an orientation parallel to front and back edges of the blank. The stopper catches at the slots' exit the front blank edge and continues to revolve with tangential speed less than the speed of the arm, whereby relative motion of the stopper and the arm gives rise to a compressive force which opens and countercollapses a box from the blank.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: May 25, 1982
    Assignee: Josef Uhlmann Maschinenfabrik GmbH & Co. KG
    Inventors: Valentin Kuttenbaum, Ernst Henle
  • Patent number: 4283190
    Abstract: A box blank with receptacle and cover sections each with side flaps and end flaps has a hinge panel joining the two sections. A vacuum pickup draws a flat blank from a supply stack to a feed carriage which transfers the blank past sprays that apply glue to the end flaps. The speed of the carrier varies, but beneath the glue sprays speed is uniform. The carriage delivers the glue coated box blank to a former and a tray forming head having concave and convex interacting pressure plates which maintain doubled over end flaps of each section in a concave configuration with respect to the box while the folded end sections are adhered to form a box tray from the blank. Former flap benders cooperate with the tray forming head to shape the box tray. A second vacuum pickup clasps the formed tray at the hinge panel and draws a shaped tray from the forming head into engagement with folding elements such that the cover and receptacle sections are bent together along the hinge panel to form a closed box.
    Type: Grant
    Filed: January 30, 1980
    Date of Patent: August 11, 1981
    Inventors: Donald F. Williams, Charles L. Phy