US3373543A - Flap slitter and positioner - Google Patents
Flap slitter and positioner Download PDFInfo
- Publication number
- US3373543A US3373543A US478371A US47837165A US3373543A US 3373543 A US3373543 A US 3373543A US 478371 A US478371 A US 478371A US 47837165 A US47837165 A US 47837165A US 3373543 A US3373543 A US 3373543A
- Authority
- US
- United States
- Prior art keywords
- container
- conveyor
- flaps
- flap
- severing
- 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.)
- Expired - Lifetime
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Classifications
-
- 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
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/20—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by folding-down preformed flaps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/869—Means to drive or to guide tool
- Y10T83/8752—Tool moves work to and against cooperating tool
Definitions
- ABSTRACT OF THE DISCLOSURE The mechanism herein disclosed is employed to sever the connections between the edges of joined, downturned closure flaps held along the outer surfaces of the vertical Walls of a filled paperboard container as the container is advanced along a given path. Severing means, located in the path of the strips, break or cut such strips as the container is propelled past such severing means. The released flaps are then swung to closed position.
- the present invention relates to slitting devices for releasing joined container flaps which are connected to stay in down folded condition at the outsides of paperboard containers while the containers are being filled.
- top closure flaps In certain container filling operations it is desirable to retain the top closure flaps close to the sides and ends of the paperboard containers instead of allowing them to extend outwardly as would normally 'be the case if the flaps were not retained.
- One expedient that is employed is to make up the container blank to leave short, integral holding strips at opposite corners of the container when the container is connected in tubular form. These holding strips join a side wall cover flap and an end wall cover flap at opposite corners of the container.
- the bottom closure flaps will be secured in the usual manner, thus preparing the container to receive its contents, such as bottles.
- the strips connecting the cover flaps are severed and the container may then be closed in a usual manner.
- the primary object of the invention is to provide improved mechanical means for breaking or severing the strips connecting the cover flaps.
- a more specific object is to provide conveying means along which a filled container, with flaps held down, may be advanced so as to bring first one set of connected cover flaps and then the other set against strip severing means such as cutting blades to release the flaps one from the other.
- a further object of the invention is to initiate the folding of the severed flaps so that they may be readily brought to outwardly or upstanding positions preparatory to further closing operations.
- FIGURE 1 is a side elevation taken partly in section along line 1-1 of FIGURE 2;
- FIGURE 2 is a top plan view of the device
- FIGURE 3 is a vertical cross-sectional view, taken along line 33 of FIGURE 1 looking in the direction of the arrows;
- FIGURE 4 is a vertical sectional view taken along line 44 of FIGURE 2 looking in the direction of the arrows;
- FIGURE 5 is a perspective view of a paperboard container showing how the cover flaps are preliminarily held in downfolded position and showing in broken lines how the container would appear if set up without first turning back the closure flaps.
- the mechanism is designed to be incorporated within ordinary or standard production lines and includes a conveyor to advance containers that have already been filled with bottles or other goods so that the containers are ready to be operated on by machines which will seal the top closure flaps.
- the containers will have their closure flaps held in outwardly downfolded positions, the flaps being held as in the present instance by short integral connecting strips.
- the containers are advanced contiguously on constantly moving belts which will slip beneath the containers. They are then fed singly onto a conveyor which propels them past a cutting device at a cutting station to sever one of the connecting strips between a pair of cover flaps.
- the containers are then delivered without relative change of position to a second conveying device at right angles to the first conveyor and this second conveying device propels the containers past a second cutting device which will sever the connecting strip between the remaining pair of connected cover flaps.
- the device is suitably supported on vertical, longitudinal and transverse frame members indicated at 1, 2 and 3.
- Journalled on the frame members on supplemental frame elements 4, 4 are shafts 5 and 6 carrying near their ends belt pulleys 7, 7 and 8, 8 over which pass belts 9, 9, spaced apart but sufficiently close to carry the filled containers.
- a lug chain conveyor Arranged between belts 9, 9 is a lug chain conveyor, indicated as a whole at 10.
- a transfer conveyor In line with the belt conveyor and lug chain conveyor is a transfer conveyor, indicated as a whole at 11, to receive cases which are to be transferred to another lug chain conveyor at right angles to conveyor 10 and indicated as a whole at 12.
- the container for which the device is designed, designated as a whole at C, is in the present instance indicated as a so-called regular slotted container made of a onepiece blank and secured at the box factory in collapsed tubular form.
- the container comprises four interconnected side and end walls 15, 16, 17 and 13 and may be connected in collapsed tubular form, for example, by stapling or taping the walls at the free edge of the blank such as, for example, walls 16 and 17.
- the cover flaps 19, 20, 21 and 22 are hinged respectively to walls 15, 16, 17 and 18.
- the cover flaps, as shown in the present instance, are connected with integral sections between flaps 19 and 20, as indicated at 23, and between flaps 21 and 22, as indicated at 24.
- the conatiner may then be expanded, as shown in full lines in FIGURE 5.
- the bottom flaps may then be sealed and the container is ready to receive its contents. Meanwhile the cover fiaps will be held closely against their attached walls. There will, however, be a slight outward flaring of the end corner portions of the cover fiaps which are not connected.
- the lug conveyor 10 is arranged to receive filled containers brought forward by the belt conveyors 9, 9.
- the lug conveyor 19 is made narrow enough to fit within the space between the belts.
- the lug chains 27, 27 carrying spaced lugs 28, 28 pass over front and rear sprockets 29, 30 secured on respective shafts 31 and 32 which are journalled in the frame pieces 4, 4.
- Sprockets 33 and 34 are secured on shafts 6 and 32 and over these sprockets passes a chain which passes in turn over a driven sprocket 36 secured on a shaft 37 driven by a motor, not shown, through gearing in gear box 38.
- the belt rollers are somewhat larger in diameter than the lug chain sprockets, thus causing the belts 9, 9 to travel somewhat faster than the lug chain 10.
- the filled containers are designed to accumulate on the belts 9, 9 and the conveyors, not shown, which feed to such belts, and are held just prior to the point of delivery to the lug conveyor 10.
- a fixed stop element 40 is arranged at the side of one of the belts 9 so as to project a short distance into the path of the leading container and arrest the movement of the entire accumulation of containers.
- Guide members 41 and 42 are arranged on the opposite side of the belt conveyor to keep the containers moving in a straight line. However, guide member 42 is flared somewhat outwardly away from the belt conveyor to allow the leading end of the container to be moved sufficiently to clear the stop 40.
- a piston type plunger 43 operated by cylinder 44.
- the operation of the plunger 43 may be by manual control or may be timed with the movement of the lugs 28 in a manner well known in the art.
- the plunger 43 will be extended sufficiently to move the leading end of the container over to clear the stop 40.
- the belts 9, 9 being in motion, will then immediately advance the accumulation of containers.
- the plunger 43 will then be retracted.
- the leading container, just released, will then be brought back into alignment with the belts 9, 9 by a flaring guide end 45 on a guide bar 46 which may be secured on the frame piece -4.
- the next container following the one just released will normally advance in a straight line and will come into contact with the fixed stop 40, thus again arresting the accumulation of containers.
- the purpose of the lug conveyor 10 is to propel the container past a cutting device, such as a fixed cutting blade 48, so that such blade may sever the connecting strip 24 which connects cover flaps 21 and 22. It is desirable therefore that the side wall 17 of the container be caused to move in close contact with the guide rail 46. It is to be understood that this guide rail is low enough to clear the lower edge of the downturned flap 21. This allows the leading edge of the flap 21 to flare out slightly, the extent of the flare depending on the condition of the paperboard.
- a springloaded roll 49 is arranged on a bracket 50 and the spring is applied so that the roll 49 bears firmly against the side of the advancing container.
- the ug conveyor 10 delivers the container onto the transfer conveyor 11 which is located within the confines of the lug conveyor 12.
- the lug conveyor 12 comprises a pair of sprocket chains 52 and 53 passing over pairs of sprockets 54, 54 and 55, 55 mounted on respective shafts 56 and 57 journalled near the opposite ends of combined frame pieces and guide rails 58 and 59 extending at right angles to frame pieces 4, 4.
- the lug conveyor carries spaced lugs 60, 60.
- the shaft 57 has keyed thereon a sprocket 61 over which passes a sprocket chain 62, passing in turn over a driven sprocket 63 on a shaft 64 driven from the gearing in gear box 38.
- a set of driven rolls comprising the transfer conveyor 11.
- These rolls indicated at 67, 67 are mounted on spindles journalled in extensions of the frame pieces 4, 4 and are frictionally driven by a belt 68 passing over a pulley 69 suitably driven by a motor 70 supported on bracket 71 on one of the vertical main frame members 1.
- a series of supplemental rollers 72, 72 suitably supported, serve to hold the belt 68 tightly against the surfaces of the rolls to drive them. The result is that as soon as the lug 28 passes around sprocket 30, no longer propelling the container, and also after the container passes beyond the ends of belts 9, 9, the rollers 67, 67 serve to advance the container.
- the gearing driving the two lug conveyors 10 and 12 is so adjusted that a container will be delivered from lug conveyor 10 onto the driven rolls 67, 67 before one of the lugs 12 comes into position to propel the container.
- the guide rail 59 is suitably secured to the frame so that its upper edge will receive contact by the container wall 16 without contacting the lower edge of the top closure flap 20.
- the propelling movement of the driven rolls 67, 67 thus forces the container into contact with this guide rail.
- a second severing device also herein shown as a cutting blade indicated at 74. The blade is in close relation to the guide rail 59.
- an abutment member 75 in the form of an adjustable screw is threaded into an upstanding bracket 76.
- the engaging surface of the screw may be adjusted inward or outward as desired with respect to the guide rail 59.
- the position of the screw is elevated and located so that the screw head will come into contact with the container near the top of the container and approximately at the container corner above the connecting strip 23. This causes the container to be distorted so that the lower corner portion of the downturned cover flap at the other end from the connecting strip 23 will tend to be projected outward away from the side wall 16, thus opening wider the space where the cutting blade is to enter.
- a preliminary flap swinging device indicated as a whole at 78, is provided.
- This device is disposed along the guide rail 58 and is in the form of a spring-loaded bracket 79, swingably mounted, and having a horizontal lower plate with an inclined cam edge 80 to contact laterally against the container wall 18 near its lower edge and guide or urge the container toward the right, as viewed in FIGURES 2 and 4. This'action is assisted by the coil spring 81.
- the preliminary flap swinging device comprises an upstanding element, herein shown in the form of a blade portion 82, the end of which is designed to slip in between the downturned flap 2-2 and the end wall 18.
- the forward end of the upstanding blade portion 812 is flared outwardly away from the container, causing the severed flap 22 to swing partially outwardly away from its attached wall 18 and thus assure that the flap 22 will be in proper position to clear and be swung upwardly by the flap plow described below.
- a driven roller 84 mounted on a shaft 85 journalled in the frame and having a sprocket 86 secured on its end.
- This sprocket is driven by a sprocket chain 87 passing around a similar sprocket 83 secured on the end of shaft 57 opposite the sprocket 61.
- the end portions of the plow rods 8-9 and 90 may each be formed in the shape of a helix, whereby the end flaps 2i) and 22 may first be swung upward and then inwardly and downwardly over the contents of the container through an angle of approximately 270 to bring them down low enough over the contents so that the side flaps, after having glue applied thereto, will readily engage on the top surfaces of the downfolded end flaps and fold them completely down so that the side flaps will be secured to the end flaps in the usual manner.
- the filled containers with downwardly held cover flaps are accumulated on the belt conveyor 9 and are released singly onto the lug conveyor 10.
- the con tainers are first propelled past the cutting device which severs the connecting strip 24 between cover flaps 21 and 22.
- the containers move then onto a transfer section 11 and, without being turned, are thereafter moved at right angles past a second cutter device 74 which severs the connection between the cover flaps 19 and 23.
- such mechanism comprising conveying means to advance a container as described with a flaring flap edge in ad vance of the vertical flap edge connected to the edge of its adjacent flap by the connecting strip, and a strip severing device arranged along an edge of the conveying means in the path of the connecting strip, whereby when the connecting strip advances past the severing device, it will be severed to disconnect the vertical edges of the joined flaps.
- such mechanism comprising two laterally spaced belt conveyors which may slip beneath the container but which will advance a container as described with a flaring flap edge in advance of the vertical flap edge connected to the edge of its adjacent flap by the connecting strip, a strip severing device arranged along an edge of one of the spaced belt conveyors and in the path of the connecting strip, whereby, when the connecting strip advances past the severing device, it will be severed to disconnect the vertical edges of the joined flaps, the spaced belts having arranged between them a constantly driven endless conveyor carrying spaced push bars to bear upon the trailing edge
- such mechanism comprising a first conveying means for advancing the container past a first cutting station where the connecting strip between two joined cover flaps is severed, a second conveying means aligned with the first conveying means for receiving the container after the first connecting strip has been cut, a third conveying means disposed at approximately right angles to the first and second conveying means for propelling the container at right angles to its first direction of travel without changing its relative position, combined stop and guide means on the side opposite the first and second conveying means for first stopping the container in alignment with the third conveying means and thereafter guiding it in such alignment, a strip sever
- the second push bar conveyor comprises endless sprocket chains or the equivalent passing over sprockets at each end thereof, the sprocket chains being spaced apart to include between them the second conveying means aligned with the first conveying means for receiving the container after the first connecting strip has been cut, such second conveying means comprising a set of rollers the top surfaces of which are disposed laterally between the sprocket chains and below the push bars on the push bar conveyor, means for driving the rollers to advance the container toward the stop and guide means, said rollers being adapted to support and convey the container into position ahead of an advancing push bar on the second push bar conveyor and to move the container firmly against the combined stop and guide means.
- Mechanism as defined in claim 8 comprising an upwardly inclined plow rod on the side of the second conveyor and located downstream from the severing device and approximately in line with the guide means for engaging the unattached edge portion of the freshly detached cover flap and swinging such fiap outwardly and upwardly as the container is advanced.
- Mechanism as defined in claim 8 comprising an upwardly inclined plow rod on the side of the second conveyor adjacent the first conveyor, a flap spreader device located on the same side of the second conveyor with the plow rod and substantially aligned therewith, said flap spreader device including a cam surface inclined forwardly and inwardly in the direction of travel to contact the adjacent container wall below the lower edge of the attached downturned cover flap and force the container laterally in the direction of the second severing device, and means on the flap spreader device for engaging and spreading the leading edge portion of the first severed flap away from its wall, whereby the leading edge of the flap will pass in the clear outside the plow rod and thereby be swung outwardly as the container is advanced.
- a first conveyor for propelling the container along a fixed path a first cutting device operatively associated at one side of the first conveyor at which the first connecting strip is cut
- a second conveyor arranged at right angles to the path of the first conveyor and arranged to receive a container from the first conveyor and means on the second conveyor to propel the container therealong without changing its relative position
- a first guide means along the first conveyor on the side opposite to the first cutting device said first guide means being arranged at a level above the first and second conveyor and terminating at the side of the second conveyor which is opposite the first conveyor, a low guide bar along
- such mechanism comprising a flap severing station, conveying means to advance a container as described past such flap severing station at which the connecting strip may be severed between two adjoining flaps at one corner of the container to free such flaps to swing to their closed positions, a second flap severing station and conveying means for advancing such container past the second station in a position in which a flaring, vertical flap edge of one of the two remaining connected flaps will be disposed in advance of the edge which is connected to the adjoining flap by the connecting strip, a strip severing device located along the side of the conveying means and in
- the conveying means for the container comprises a pair of spaced, endless members supporting a push lug for propelling the container, guide means for the container arranged along one side of the conveying means, said severing device being closely related to the guide means, a group of live rolls disposed between the spaced, endless members, but out of the path of the push lug, for supporting the container, the live rolls being arranged with their axes located lengthwise of the endless members, and the rolls being rotatable to urge the container against the guide means.
Description
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US478371A US3373543A (en) | 1965-08-09 | 1965-08-09 | Flap slitter and positioner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US478371A US3373543A (en) | 1965-08-09 | 1965-08-09 | Flap slitter and positioner |
Publications (1)
Publication Number | Publication Date |
---|---|
US3373543A true US3373543A (en) | 1968-03-19 |
Family
ID=23899667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US478371A Expired - Lifetime US3373543A (en) | 1965-08-09 | 1965-08-09 | Flap slitter and positioner |
Country Status (1)
Country | Link |
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US (1) | US3373543A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3478487A (en) * | 1966-12-28 | 1969-11-18 | Barton K Smith | Method of and apparatus for wrapping products |
US3533214A (en) * | 1967-08-15 | 1970-10-13 | Johns Nigrelli Johns | Right angle flap slitter |
US4291518A (en) * | 1979-09-12 | 1981-09-29 | Standard-Knapp, Inc. | Packing case tab slitter |
US4293086A (en) * | 1980-04-11 | 1981-10-06 | Fincher Paul A | Apparatus and method for separating case flaps |
US4551964A (en) * | 1979-09-12 | 1985-11-12 | Standard-Knapp, Inc. | Packing case tab slitter |
US5054262A (en) * | 1989-10-20 | 1991-10-08 | Philip Graham Hertel | Automated corrugated box processing equipment |
US20040068956A1 (en) * | 1994-11-10 | 2004-04-15 | Hartness Thomas P. | Case tab-lock slitting and flap sealer in combination with a continuous radial motion case packing apparatus and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464099A (en) * | 1944-02-18 | 1949-03-08 | Pneumatic Scale Corp | Packaging machine |
US3015197A (en) * | 1960-07-15 | 1962-01-02 | Ibm | Carton slitter and forming machine |
-
1965
- 1965-08-09 US US478371A patent/US3373543A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2464099A (en) * | 1944-02-18 | 1949-03-08 | Pneumatic Scale Corp | Packaging machine |
US3015197A (en) * | 1960-07-15 | 1962-01-02 | Ibm | Carton slitter and forming machine |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3478487A (en) * | 1966-12-28 | 1969-11-18 | Barton K Smith | Method of and apparatus for wrapping products |
US3533214A (en) * | 1967-08-15 | 1970-10-13 | Johns Nigrelli Johns | Right angle flap slitter |
US4291518A (en) * | 1979-09-12 | 1981-09-29 | Standard-Knapp, Inc. | Packing case tab slitter |
US4551964A (en) * | 1979-09-12 | 1985-11-12 | Standard-Knapp, Inc. | Packing case tab slitter |
US4293086A (en) * | 1980-04-11 | 1981-10-06 | Fincher Paul A | Apparatus and method for separating case flaps |
US5054262A (en) * | 1989-10-20 | 1991-10-08 | Philip Graham Hertel | Automated corrugated box processing equipment |
US20040068956A1 (en) * | 1994-11-10 | 2004-04-15 | Hartness Thomas P. | Case tab-lock slitting and flap sealer in combination with a continuous radial motion case packing apparatus and method |
US6883296B2 (en) * | 1994-11-10 | 2005-04-26 | Hartness International, Inc. | Case tab-lock slitting and flap sealer in combination with a continuous radial motion case packing apparatus and method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NIGRELLI CORPORATION, A CORP. OF WIS. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DATE 11-14-80;ASSIGNOR:JOHNS-NIGRELLI-JOHNS, INC.;REEL/FRAME:004008/0318 Effective date: 19810316 |
|
AS | Assignment |
Owner name: FIRST WISCONSIN NATIONAL BANK, 777 EAST WISCONSIN Free format text: SECURITY INTEREST;ASSIGNOR:NIGRELLI CORPORATION;REEL/FRAME:003967/0400 Effective date: 19820408 |
|
AS | Assignment |
Owner name: FIRST WISCONSIN NATIONAL BANK OF MILWAUKEE Free format text: MORTGAGE;ASSIGNOR:NIGRELLI CORPORATION;REEL/FRAME:004080/0486 Effective date: 19821014 Owner name: FIRST WISCONSIN NATIONAL BANK OF MILWAUKEE, WISCON Free format text: MORTGAGE;ASSIGNOR:NIGRELLI CORPORATION;REEL/FRAME:004080/0486 Effective date: 19821014 |
|
AS | Assignment |
Owner name: FIRST WISCONSIN NATIONAL BANK OF MILWAUKEE, 777 EA Free format text: MORTGAGE;ASSIGNOR:NIGRELLI SYSTEMS INC.;REEL/FRAME:004212/0865 Effective date: 19831212 Owner name: NIGRELLI CORPORATION, 16024 CTH X, KIEL, WI 53042 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:KORB, THOMAS W., TRUSTEE IN BANKRUPTCY OF NIGRELLI CORPORATION;REEL/FRAME:004212/0869 Effective date: 19831212 Owner name: NIGRELLI SYSTEMS INC., KEIL, WI 53042 Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FIRST WISCONSIN NATIONAL BANK OF MILWAUKEE;REEL/FRAME:004212/0254 Effective date: 19831212 |