US3604316A - Untimed mechanical transfer means for right angle folding machines - Google Patents

Untimed mechanical transfer means for right angle folding machines Download PDF

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Publication number
US3604316A
US3604316A US15562A US3604316DA US3604316A US 3604316 A US3604316 A US 3604316A US 15562 A US15562 A US 15562A US 3604316D A US3604316D A US 3604316DA US 3604316 A US3604316 A US 3604316A
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United States
Prior art keywords
blank
path
nip
machine
transfer zone
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Expired - Lifetime
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US15562A
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English (en)
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Raymond A Labombarde
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Assigned to GENERAL ELECTRIC CAPITAL CORPORATION reassignment GENERAL ELECTRIC CAPITAL CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL PAPER BOX MACHINE COMPANY, INC
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    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/36—Folding sheets, blanks or webs by continuously feeding the sheets, blanks or webs to stationary members, e.g. plates, ploughs or cores

Definitions

  • Rotating nip roll [52] US. Cl 93/49R, means in a transfer zone retains a grip on each advancing 198/24, 27l/49, 271/52, 271/59 blank while the side edge of the blank successively engages a [51] Int. Cl 1331b 1/26 row of individual spring members, the springs rebounding to [50] Field of Search 93/49 R, 49 flick the blank when the trailing edge of the blank is released M, 52; 198/24; 27 H49, 52, 59, DIG. 4
  • the prior art patent most pertinent to this invention is believed to be U.S. Pat. No. 3,111,885 to Perilli of Nov. 26, 1963.
  • the Perilli patent discloses an untimed right angular machine having a first flapfolding conveyor section, a second flap-folding conveyor section at right angles thereto, and a transfer station at the junction of the sections.
  • Each successive blank is carried through the first section on conveyor belts, without upper holddown belts or upper pressure rolls, and delivered the full length of the transfer station by the momentum of the conveyor, while free of control.
  • the leading edge of the blank then strikes a centrally located switch which closes a circuit to an electrically actuated kicker, located centrally of the side edge of the blank, the kicker propelling the blank laterally into the second flap-folding conveyor section.
  • This invention relates to an improved transfer apparatus and method for use in an untimed, right angular, paper box folding machine of the type disclosed in the said U.S. Pat. No. 3,1 l [,885.
  • the invention includes the provision of pressure nip roll means at the end of the first flap-folding section for ad vancing each blank substantially the full length of the transfer zone, or station, under firm grip and control to assure its retention in a straight line path. It further includes a plurality of spaced, individual, resilient members, normally in the path of the side edge of the blank and arranged to be successively distorted by the blank with predetermined light resistance to blank passage in order to avoid damage or bending of the blank.
  • the resilient members Upon the release of the trailing edge of the blank from the pressure nip, the resilient members rebound jointly with sufficient force applied along the entire side edge of the blank to propel the blank laterally into the grip of the right angular, or second, flap-folding section.
  • the resilient members are leaf springs arranged in comblike configuration, each spring being flexed out of the blank path by the blank.
  • mechanical equivalents could be used, such as a slippery-surfaced inflated bag, a row of coil springs, a row of spring recoil arms of rigid material, or any other structure which will individually store small increments of energy, insufficient to damage the blank and jointly and simultaneously release the stored energy to propel the blank laterally.
  • the invention also resides in the provision of an adjustable register bar at the end of the transfer zone, to guide the blanks sidewise into the second section and a pair of holddown guides alongside the terminal tips of the leaf springs to prevent the spring resistance from upbending or downbending the blank, as well as to prevent the blank from going underneath, or on top of, the leaf springs.
  • the invention also includes the provision of a separate drive means for the pressure nip rolls, with an overrunning clutch,
  • a friction roll is mounted in the transfer zone and driven with the pressure rolls with its surface above the level of the roll nip to urge the blanks toward the register bar by friction contact with the trailing portion of the underface while raising that portion to permit the next successive blank to be overlapped in the transfer zone.
  • FIG. 1 is a plan view of the transfer zone of a right angular paper box blank folding machine, illustrating the preferred embodiment of the invention, with the blanks overlapping.
  • FIG. 2 is a side elevation in section on line 2-2 of FIG. 1.
  • FIG. 3 is a diagrammatic plan view similar to FIG. 1 showing a blank advancing into the transfer zone under firm nip control while flexing the leaf springs.
  • FIG. 4 is a view similar to FIG. 3, showing the blank released by the nip and fully in the transfer zone, the friction roll, blank momentum and spring recoil producing the composite path shown by the arrows.
  • FIG. 5 is a view similar to FIGS. 3 and 4 and showing the first blank being moved laterally under control of the second folding section while the next blank is being advanced thereunder into the transfer zone.
  • FIG. 6 is an end elevation on line 6-6 of FIG. 1 showing the.
  • FIG. 7 is an enlarged, fragmentary side elevation, similar to FIG. 2, showing the control of the blanks during transfer.
  • the first flap-folding section 27 includes a conventional, untimed magazine, not shown, for feeding flat paper box blanks 31 from a stack thereof, individually and successively along the first straight path of the first section 27, the blanks being spaced apart by a gap 32.
  • a pair of lower belt carriers 33 and 34 and a pair of upper belt carriers 35 and 36 convey the successive blanks 31 through the first section 27, in a path parallel to the longitudinal fold lines 37, the upper belts 35, or suitable folding bars, overfolding the side flaps 39, and the tabs such as 41 on the end flaps 42 and 43, all in a manner well known, and shown in U.S. Pat. No. 3,l l l,885.
  • the other side flaps 38 may be pre folded and unfolded by belts 36, the side edges 45 of the blanks being unfolded in the transfer zone.
  • Each blank 31 includes a leading edge 44, folded side edges 46, a trailing edge 47, an upper face 48, and a lower face 49.
  • the purpose of the transfer apparatus SI is to shift each successive blank 31 fully advanced into the transfer zone 29, laterally into the second section 28, so that the unfolded side edge 45 is engaged and advanced thereby for back folding of the diagonal tabs such as 52 on the side flaps 38 and 39, the edge 45 becoming the leading edge of the blank in the second section.
  • the second flap folding section 28 includes carrier rolls 50, upper and lower carrier belts 53, hooked folding fingers, holddown and folding bars, all well known in the art for performing the desired operations on the blanks in an untimed, high-speed manner.
  • the transfer apparatus 51 is mechanical, untimed, and automatic and includes pressure roll means 54, comprising a pair of pressure rolls 55 and 56 forming a pressure nip 57 extending transversely just in advance of transfer zone 29 at the terminus of the first folding section 27.
  • Upper roll 55 is driven by contact and lower roll 56 is friction faced and normally driven by the power train 58 (FIG. 1), from the drive 59 of the machine, so that the surface speed of the carrier belts 33, 34, 35 and 36, and of the rolls 55 and 56 is identical.
  • the belts are for the purpose of carrying and folding, but the rolls 55 and 56 are spring-pressed together with a predetermined force, to secure a tight grip at nip 57 on the upper and lower faces of the blank 31.
  • each blank 31 gripped in nip 57 will be advanced toward the register bar 61 at the end of zone 29, in a straight path, under a tight grip and firm control rather than by being thrown across the zone, until the trailing edge 47 emerges from, and is released by, the pressure nip 57.
  • Rolls 55 and 56 may be sleeved with friction material, such as rubber or the like, to assure a firm grip and to prevent any lateral shift of the blank during advance by the nip 57.
  • upper roll 55 is preferably provided with a multiplicity of longitudinally extending grooves 60, parallel to the axis of the roll, for the purpose of receiving the trailing edge 47 of each blank and keeping the blank registered against end stop 61 at all speeds.
  • the register bar 61 is mounted for slidable adjustment on the frame piece 62 and may be locked in position by setscrew 63 at a spaced distance from nip 57, slightly greater than the length of a blank 31.
  • Bar 61 is free of protuberances on the face 64 thereof, which is engaged by the leading edge 44, to avoid twisting of the blank, and the face 64 serves as a side edge guide to direct the laterally moving blank 31 into the second section 28 in exact registration.
  • the register bar, or end stop, 61 is fixed in such position that when the leading edge 44 of a blank is bearing thereagainst, the trailing edge 47 of the blank is riding in one of the grooves 60 of upper roll 55 at proximate the level of the center of the roll.
  • a plurality of individual, resilient means 70 is mounted along the side 65 of the transfer zone 29 which is opposite to the second section.
  • Means 70 is preferably in the form of an elongated row of individual elastic resilient members 66, in parallelism, each independently operable and constituting a leaf spring having a base 67 anchored in frame piece 62, and a free terminal portion 68 obliqued at an angle of about 45 to the path of the blanks and normally extending into the path of the adjacent side edge portion 46 thereof.
  • each leaf spring 66 is therefore of predetermined configuration and coefficient of elasticity so as to offer only light resistance to the passage of the blank as the spring is yieldably distorted from normal position to spring biased position. Upon release of the blank by the nip 57, however, the joint effect of rebounding of all of the springs is sufficient to propel the blank laterally for the short distance necessary to enter the advancing grip of the second section 28.
  • a pair of upper and lower guides 71 and 72 are mounted along the side 65 of the transfer zone 29, the guides being spaced apart to form an elongated slot aperture 73 for receiving and slidably guiding the side edge portion 46 of the blank.
  • the guides 71 and 72 are alongside the terminal tips of the leaf springs so that the slot 73 is about midway of the height of the spring tips, thereby assuring that the blank cannot ride over, or under, the leaf springs.
  • a third friction roll 75 is preferably provided as part of the pressure roll means 54, the roll 75 extending transversely of the first path 27 within the transfer zone 29, and just in rear of the nip 57.
  • the upper portion of the friction face 76 of roll 75 is at a level slightly above the level of nip 57, there being a bridge element 77 between lower roll 56 and roll 75 to guide each blank 31 upwardly as shown in FIG. 2.
  • an independent power source 81 including an overrunning clutch 82 is operably connected to the three rolls 55, 56 and 75.
  • the independent power source 81 through clutch 82 continues to rotate the rolls 55, 56, and 75 at a predetermined speed sufficient to advance any blank received in nip 57 up to the register bar 61.
  • the overrunning clutch 82 permits the three rolls to operate at such normal speed.
  • the grooved roll 55 is carried at the end of a yoke 90, pivoted to the frame 91, and the frame 91 is spring-pressed by spring 92 against roll 56, with a predetermined pressure, sufficient to frictionally prevent the blanks from twisting under the influence of the leaf springs.
  • Yoke carries a stop 93 for retaining the trailing edge 47 of each blank at the height shown, the grooved face of the roll 55 being capable of slipping past the so-held edge 47 while causing a slight fluttering thereof.
  • a first blank 31 may be moving laterally out of the zone 29 while the leading edge 44 of a second blank is guided by bridge 77 and roll face 76 up under the first blank to progressively advance thereunder.
  • operation of the device is speeded up without danger of loss of control of the blanks. Production of the machine is therefore doubled while decreasing the floor space required for such production.
  • An untimed, right-angular paper box blank folding machine having a first flap-folding section, a second flap-folding section at right angles to said first section, and a blank transfer zone at the junction of said sections, said machine characterized by pressure roll means having a nip extending transversely of said first section, just in advance of said transfer zone, for advancing each successive blank, received from said first section, into said transfer zone while firmly gripping said blank to prevent lateral shift thereof until the trailing edge of said blank is released by said nip, and
  • each said resilient means is a leaf spring.
  • said plurality of individual resilient means comprises a row of individual leaf springs normally in parallelism and obliqued at an angle of about 45 to the path of blanks advancing into said transfer zone.
  • a machine as specified in claim 1 wherein 6.
  • said pressure roll means comprises an upper and lower roll and drive mechanism operably connected to at least one said roll, said drive mechanism being independent of the drive of said machine for rotating said rolls at a predetermined speed to impart a predetermined propelling force to each blank advanced thereby into said transfer zone even when said machine is being slowly operated or inched.
  • said roll having its upper face at a level slightly above the level of said nip to elevate the trailing edge of a blank, discharged from said nip and moving laterally in said zone, while guiding the leading edge of the next successive blank under said trailing edge into overlapped position.
  • a machine as specified in claim 1 plus a pair of upper and lower guides extending in parallelism along the said side of said transfer zone opposite to said second flap-folding section, said guides being spaced apart to form an elongated slot therebetween for slidably receiving the adjacent side edge portion of each blank so advanced into said transfer zone, said slot being positioned to guide the edge of each blank into the central portion of said resilient means to prevent vertical deflection of said blank.
  • said pressure roll means comprises an upper and lower roll forming said nip, said nip being at a predetermined level
  • a friction roll extending transversely of said first flap-folding section, within said transfer zone, just in rear of said pressure nip, said element having its upper face at a level slightly above the level of said nip to elevate the trailing edge of a blank discharged from said nip, thereby permitting the leading edge of the next blank to shingle thereunder.
  • said upper roll includes a longitudinally grooved surface arranged to receive the trailing edge of each successive blank discharged from said nip and guide the same as the blank travels sidewise into said second section, under the influence of said resilient means.
  • said apparatus comprising a pair of driven pressure rolls forming a pressure nip extending transversely of said first path, just in advance of said transfer section, said rolls restraining each successive blank from lateral movement out of said first path until the trailing edge of the blank has emerged from said nip, and
  • said distorted resilient members jointly recovering the normal shape thereof, and propelling said blank transversely of said path into said second path, upon the release of the trailing edge thereof by said pressure nip.

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  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
US15562A 1970-03-02 1970-03-02 Untimed mechanical transfer means for right angle folding machines Expired - Lifetime US3604316A (en)

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Application Number Priority Date Filing Date Title
US1556270A 1970-03-02 1970-03-02

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US3604316A true US3604316A (en) 1971-09-14

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US (1) US3604316A (cg-RX-API-DMAC10.html)
JP (1) JPS4935746B1 (cg-RX-API-DMAC10.html)
DE (1) DE2109468C2 (cg-RX-API-DMAC10.html)
FR (1) FR2084096A5 (cg-RX-API-DMAC10.html)
GB (1) GB1281459A (cg-RX-API-DMAC10.html)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2301172A1 (de) * 1972-05-26 1974-01-24 Labombarde Raymond A Verfahren und vorrichtung zum falten von schachtelzuschnitten
US3800680A (en) * 1973-06-27 1974-04-02 R Labombarde Method for folding of tabs in a right angle transfer zone
US3951402A (en) * 1974-03-25 1976-04-20 Skinner Lloyd D Paper conveyor and guidance system
US4571234A (en) * 1984-08-09 1986-02-18 Labombarde Raymond A Non-rebound mechanism for right angle transfer in folder gluers
US5192066A (en) * 1990-10-19 1993-03-09 Helmut Steinhilber Device for transporting sheets in office machines
US5882006A (en) * 1995-10-06 1999-03-16 Baldwin Technology Corporation Apparatus and method for turning and orienting articles within an article pathway
US20030218292A1 (en) * 2002-03-22 2003-11-27 Magnum Manufacturing Limited Method and apparatus for overlapping sheets in a sheet feeder and providing the overlapped sheets to a printing press

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111885A (en) * 1960-08-22 1963-11-26 Nicholas J Perrelli Untimed method of and apparatus for making cartons

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1684903A (en) * 1927-06-01 1928-09-18 Arthur L Young Blank-bending machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111885A (en) * 1960-08-22 1963-11-26 Nicholas J Perrelli Untimed method of and apparatus for making cartons

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2301172A1 (de) * 1972-05-26 1974-01-24 Labombarde Raymond A Verfahren und vorrichtung zum falten von schachtelzuschnitten
US3807289A (en) * 1972-05-26 1974-04-30 R Labombarde Apparatus and method for folding of tabs in a right angle transfer zone
JPS4949780A (cg-RX-API-DMAC10.html) * 1972-05-26 1974-05-14
US3800680A (en) * 1973-06-27 1974-04-02 R Labombarde Method for folding of tabs in a right angle transfer zone
US3951402A (en) * 1974-03-25 1976-04-20 Skinner Lloyd D Paper conveyor and guidance system
US4571234A (en) * 1984-08-09 1986-02-18 Labombarde Raymond A Non-rebound mechanism for right angle transfer in folder gluers
US5192066A (en) * 1990-10-19 1993-03-09 Helmut Steinhilber Device for transporting sheets in office machines
US5882006A (en) * 1995-10-06 1999-03-16 Baldwin Technology Corporation Apparatus and method for turning and orienting articles within an article pathway
US20030218292A1 (en) * 2002-03-22 2003-11-27 Magnum Manufacturing Limited Method and apparatus for overlapping sheets in a sheet feeder and providing the overlapped sheets to a printing press
US20050200075A1 (en) * 2002-03-22 2005-09-15 Magnum Manufacturing Limited Method and apparatus for overlapping sheets in a sheet feeder and providing the overlapped sheets to a printing press
US6988726B2 (en) * 2002-03-22 2006-01-24 Magnum Manufacturing Limited Method and apparatus for overlapping sheets in a sheet feeder and providing the overlapped sheets to a printing press
US7347418B2 (en) 2002-03-22 2008-03-25 Magnum Manufacturing Limited Method and apparatus for overlapping sheets in a sheet feeder and providing the overlapped sheets to a printing press

Also Published As

Publication number Publication date
GB1281459A (en) 1972-07-12
JPS4935746B1 (cg-RX-API-DMAC10.html) 1974-09-25
DE2109468C2 (de) 1982-12-23
DE2109468A1 (de) 1971-09-23
FR2084096A5 (cg-RX-API-DMAC10.html) 1971-12-17

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Legal Events

Date Code Title Description
AS Assignment

Owner name: GENERAL ELECTRIC CAPITAL CORPORATION, CONNECTICUT

Free format text: SECURITY INTEREST;ASSIGNOR:INTERNATIONAL PAPER BOX MACHINE COMPANY, INC;REEL/FRAME:009297/0213

Effective date: 19980331