US2577424A - Method of and means for stripping cut and creased sheets - Google Patents

Method of and means for stripping cut and creased sheets Download PDF

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Publication number
US2577424A
US2577424A US719553A US71955346A US2577424A US 2577424 A US2577424 A US 2577424A US 719553 A US719553 A US 719553A US 71955346 A US71955346 A US 71955346A US 2577424 A US2577424 A US 2577424A
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sheets
die
useful
pile
portions
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US719553A
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Hans J Luehrs
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CB Cottrell and Sons Co
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18Means for removing cut-out material or waste
    • B26D7/1818Means for removing cut-out material or waste by pushing out

Definitions

  • the objectofmy invention is-to provide a novel method oi. and means for stripping out and.
  • invention further consists in providing oneof;the.- stripping dies with a raised waste portion contacting surface and the'other die with a raised useful portion contacting-surface. the raised surface of one of the diesbeing higher than the raisedlsurfacee of. theother die for causing a successive sheetstripping action.
  • inventionfurther consists inprovidingthe stripping dies with means. as, for, instance, 00-
  • My invention consists, more particularly, in. positioning; the lower stripping; die to receive suc cessive cut and. creased sheets thereon at the delivery end. of ,asheetcutter and creaser; moving the. lower die. with its pile of cut andcreased. sheets; to. the. sheet stripper into register with the upper stripping die; releasably locking the lower diewith its pileinregister with the upper die; moving the upperdie downwards. to strip the Waste: portions from the useful portionsof the sheets and. at the same time to releasablyinterlockthe superimposed useful portionsof the.
  • My-invention also; includes the provisionoi a track.- and; a. truckmovable' along, the same for transierringithelower strippin die with its-pile.
  • Fig- 1 represents. adetailside view of the delivery end. of a. sheet. cutter. and creaser. of: any well known or approved construction and. showing: a partially completed pileofcutand creased". sheets; a transfer. truckv also. being. shown. in. positionto. receive the lower. dieand. the sheets when the. pileis completed.
  • Fig. 2. representsaa detail side-view of the sheet. stripper with the lower die and the pile-of. cut. and. creased sheets transferred. by the truckint'o positionto bestripped...
  • Fig-.204 represents a..d'etail. vertical longitudinal. section through. the truck. to. moreclearli'y show the. manually. operated means. for lowering. and raising the truckbody.
  • Fig. 3 represents a detail" side view showing thepileoistripped sheetsltogether withthe lower die. transf'erredby the truck. to. their useful and wasteport'ionmemovaI.position.
  • FIG. 4L represents atop plan view of. the parts showninFigl.
  • Fig. G represents atop plan view of the parts shown in Fig. 3'.
  • Fig. '7 represents a. vertical. section taken in the planeofithellne VII'-VII'0f Fig. 2;
  • Fig- 8 represents a. plan. view of. the pile of cut and. creased sheets. before the sheets have been stripped.
  • Fig. 9.. represents atop planview ofone of the stacks of. useful portions after the. sheets have been stripped and. thewaste portionsremoved ⁇
  • Fig 11 representsa bottom plan. view 01".
  • Fig. 12 representseaztopplan view-oithelower strippin die.
  • Fig. 13 representsra'detailvertical section simia larstoFig, 10: except-that the upper. die'contacts:
  • Fig. 14 represents a bottom plan view of the upper die shown in Fig. 13.
  • Fig. 15 represents a top plan view of the lower die represented in the said Fig. 13.
  • the sheet cutter and creaser l is shown as provided with the usual lifting chains 2 and removable cross-bars 3 for supporting the delivery board 4 and the lower or female die 5 of the sheet stripper in position to receive successive cut and creased sheets from the sheet cutter and creaser, which sheets comprise useful portions 6 as, for instance, folding boxes, and waste portions 1 connected thereto as is usual, the connections 6 being formed by short uncut portions which alternate with the cut through portions 6 between the said useful and waste portions 6 and I.
  • the sheet stripper is shown as comprising a base 8 having two pairs of posts ⁇ ; and I extending upwardly therefrom. These pairs of posts are additionally supported by braces II and I2 uprising from the said base.
  • the head l3 of the sheet stripper is vertically slidable on the pairs of posts 9 and I5.
  • Two pairs of worm gears l4 and I are rotatably mounted in the head I3 and have screw-threaded engagements with their respective pairs of posts 9 and Ill.
  • a horizontally disposed worm shaft i6 is rotatably mounted in the head l3 and it has two worms l1 and I8 meshing with their respective pairs of worm gears l4 and I5. This worm shaft I6 is shown as driven from a reversible electric motor 19 mounted on the head l3,
  • a track leads from the sheet cutter and creaser I through the sheet stripper to a position where the useful and waste portions of the stripped sheets may be separated and removed.
  • Grooves 25 and 26 along the top surface of the base 8 of the sheet stripper form seats for the track rails 21 and 28.
  • a four-wheeled truck is movable along the track to the delivery end of the sheet cutter and creaser l in position to receive and support the delivery board 4, the lower or female stripping die 5, and
  • This truck may be releasably locked tothe track in register with thesaid delivery board, lower die and completed pile of cut and creased sheets at this point, as by providing means for lowering the truck body 29-.onto the track bed between the track rails 2'! and 28, to cause the holes 30 in the bottom of the truck body 29 to receive the registering pins 3
  • the means for lowering and raising the truck body 29 is shown as comprising a hand wheel 32 located beyond the rear end. of the truck body, which hand wheel is carried by a horizontally disposed worm shaft 33 mounted in the truck body, between its pairs of wheels 34 and 35 in position to have its two worms 36 and 31 mesh with the wheels 38 and 39 fast on the axles 40 and 4
  • the truck may then be releasably locked to the track bed to register the lower die 5 with the upper die 44 by again lowering the truck body 29 by the means already described, to cause the holes 30 to receive the second set of registering pins 45 located on the track bed between the track rails 21 and 28. In this position it will be seen that the weight is taken off the truck wheels 34 and 35.
  • the upper stripping die 44 may then be moved downwards into contact with the top sheet of the pile and caused to exert suflicient pressure thereon to successively sever the connections 6 between the useful and waste portions of the pile of cut and creased sheets.
  • I Thi upper die 44 is shown as provided with a raised surface 43 arranged to contact the useful portions 6 of the top sheet of the pile and the lower die as provided with a raised surface 4'! in contact with the waste portions 1 of the bottom sheet of the pile; the raised surface 46 of the upper die being considerably higher than the raised surface 47 of the lower die to ensure a shearing action to sever the connections 6 between the useful and waste portions of successive sheets during the downward stripping movement of the upper die.
  • the stripping dies have contours corresponding with the contours of the useful portions of the sheets to ensure a correct stripping of the sheets.
  • Means may be provided for causing each stack of useful portions 6 of the superimposed cut and creased sheets to be releasably interlocked as the sheets are being stripped, to facilitate the handling of the useful portions after the stripping operation.
  • the upper die 44 is provided with raised wedge-shaped pieces 48 and the lower die with relieved or recessed wedge-shaped pieces 49 which coact with e the pieces 48 to bend corresponding element of each stack of useful portions to releasably interlock them.
  • the upper die 44 is raised to free it from the pile by reversing the electric motor l9.
  • the truck body 29 is then raised to free the holes 30 from the second set of registering pins 45.
  • the truck with its delivery board 4, lower stripping die 5 and pile of stripped sheets with their interlocked stacks of useful portions 6 may then be moved along the track to the useful and waste portion removal position.
  • the truck body 29 may again be lowered onto the track to cause the holes 39 to receive the third set of pins 50 which are located on the track at this point.
  • the waste portions 1 which have been severed from the useful portions 6 may now be removed and discarded and the two stack of useful portions may also be removed for further operations thereon.
  • a duplicate delivery board and its lower stripping die 5 have been positioned by the chains 2 and their crossbars 3 to receive the successive cut and creased sheets of the next pile from the cutter and creaser.
  • the truck may be again moved along the track to its first named posithe 1410i- :the embodimentshown inll i'gs. 1 to 12 inclusive, becoming the :lower ydie f5] and the lower "die 5 becoming the upper die 52.
  • posithe 1410i- :the embodimentshown inll i'gs. 1 to 12 inclusive becoming the :lower ydie f5] and the lower "die 5 becoming the upper die 52.
  • .In'the embodiment :shown :in :Figs. 13, 14 :and 15 the .raisedcsurface' 53 aof :the lower diet]! is arranged to contact theuseful-portions 6 :of the bottom sheet of'the pile .ofcutrand creasedsheets-and the raised surface :54 of the upper die 52. is-arrangedto contact'the -waste portions :1 of the top sheet of the pile.
  • the lower die 51 is providedwithzthe raised wedge-shaped pieces .55 and the upper ".die with the coacting relieved wedge-shaped pieces 55 "for releasably interlocking the superimposed useful :portionslfi of the sheets as the'sheets :are being stripped.
  • a sheet stripper having up.- per and lower dies, .atracknbed-a track thereon passing through the sheet stripper, a "truck movable on the track to bring the lower die with :a pile of cut and creased sheets having connected useful and waste portions into register with the upper .die, said :dies having .coacting cutting: and stripping elements of the sameucontours as the said -usefuiportions, manually operated means for lowering the truck body onto the'trackxbed, and means .for moving the upper :die toward :the lower the to sever the connections between said useful and waste portions and to strip the sheets when the truck body is in :its lowered position.
  • a sheetstripper having upper-and lower dies, a track bed, a track passing through-the sheet stripper, a truck, wheels thereon movable on the track to bring the lower die witha pile of cutand creased sheets-having con-- nected useful and waste I portions into register with-the upper die, said dieshaving coacting cutting and stripping elements of the same contours as the saidzusefulportions, eccentric mountings forthettruck wheels, and'manually operated meansi-to impartarotary-movement to said eccentric :mount-ings ;for lmw'erine. the truck body onto ,the track bed and-thereby releasing the weight from the truck wheels, and Ineansfor moving the upper die.
  • the method which consists'in associating a pile of cut and creased sheets with upper and lower dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, said dies also having coacting useful portion interlocking elements, moving one of the dies toward the other die with sufficient pressure on the pile to ,sever the connections between the useful and waste portions of the sheets, strip the sheets and releasably interlock the superimposed useful portions of the sheets, moving the lower die together with the stripped pile of sheets to a predetermined point and thereafter separating and removing the said useful and waste portions.
  • the method which consists in associating a pile of cut and creased sheets with upper and lower dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, said diesalso having coacting-useful portion bending elements, moving one of the dies toward the other die with sufficient pressure on the pile to sever the connections between the useful and waste portions of the sheets, strip the sheets and bend corresponding parts of the superimposed useful portions to releasably interlock them, moving the lower die together With the stripped pile of sheets to a predetermined point and thereafter separating andremoving the said useful and waste portions.
  • the method which consists in moving a pile of cut and creased sheets together with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, moving the upper die downward to exert sufficient pressure on the pile to sever the connections between the useful and waste portions of the sheets and strip the sheets and thereafter transferring the lower die with its pile of stripped sheets to a useful and waste portion separation and removal position.
  • the method which consists in moving a pile of cut and creased sheets together-with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, the dies also having useful portion interlocking elements, moving the said upper die downward to exert sufi'icient pressure on the pile to sever the connections between the useful and waste portions of the sheets, strip the sheets and releasably interlock the superimposed useful portions, and thereafter transferring the lower die with its pile of stripped sheets to a useful and waste portion separation and removal position.
  • the method which consists in moving a pile of cut and creased sheets to ether with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, releasably locking the lower die with its pile in such register, moving the upper die downward with sufficient pressure on the pile to sever the connections between the useful and waste portions of the sheets and strip the sheets and thereafter transferringthe lower die with its 8v pile of stripped sheets to a useful and waste portion separation and removal position.
  • the method which consists in moving a 'pileof cut and creased sheets together with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, the dies also having useful portion interlocking elements, moving said upper die downward to exert sufficient pressure on the pile to sever the connections between the useful and waste portion of the sheets, strip the sheets and at the same time releasably interlock the superimposed useful portions, and thereafter transfer-1 ring'the lower die with its pile of stripped sheets to a useful and waste portion separation and removal position.
  • a sheet stripper upper and lower dies, means for positioning the lower ,die to receive successive cut and creased sheets having connected useful and waste portions, means for receiving the lower die with its pile of sheets from the positioning'meansand moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as said useful portions, and means for moving the upper die downward to sever the waste portions from the useful portions of the superimposed sheets and strip them and then upward to free the die from the pile.
  • a sheet stripper upper and lower dies, means for positioning the lower die to receive successive out and creased sheets having connected useful and waste portions, means for receiving the lower die with its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as said useful portions, means for releasably locking the pile in its registered position, and means for moving the upper die downward onto the pile to sever the waste portions from the useful portions of the superimposed sheets and strip them and-then upward to free the die from the pile.
  • a sheet stripper upper and lower dies, means for positioning the lower die to receive successive cut and creased sheets having connected usefuland waste portions, means for receiving the lower die with its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the-same contours as said useful portions, and means for moving the upper die downward to sever the waste portions from the useful portions of the superimposed sheets and strip them and then upward to free the die from the pile, the lower die being subsequently movable 'with its pile of stripped sheets to a predetermined point.
  • a sheet stripper upper and lower dies, means for positioning the lower die to receive successive cut and creased sheets having connected useful and waste portions, means for receiving the lower die with its pile of sheets-from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as said useful portions, means for releasably locking the pile in its registered position, and means for moving the upper die downward onto the pile to sever the waste portions from theuseful portions of the 9 superimposed sheets and strip them and then upward to free the die from the pile, the lower die being subsequently movable with its pile of stripped sheets to a predetermined point.
  • a sheet stripper upper and lower dies, means for positioning the lower die for receiving from a sheet supply source successive cut and creased sheets having connected useful and waste portions, means for receiving the lower die and its pile from the positioning means and moving the die with its pile into the sheet stripper in register with the upper die, said dieshaving coacting cutting and stripping elements of the same contours as said useful portions, and means for moving the upper die downward onto the pile to strip the'waste portions from the useful portions and for thereafter raising the upper die, the lower die being subsequently movable with its pile of stripped sheets to a predetermined point.
  • a sheet stripper upper and lower dies, means for positioning the lower die to receive from a sheet supply source successive sheets having connected useful and waste portions, a track leading from the supply source through the stripper to a predetermined point, a truck on said track for receiving the lower die and its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements, means for releasably locking the truck in its registered position, and means for moving the upper die downward onto the pile to sever the useful and waste portions of the sheets and then upward to free the die from the pile, the truck being subsequently movable with its lower die and pile to said predetermined point.
  • a sheet stripper upper and lower dies, means for positioning the lower die to receive successive cut and creased sheets from a sheet supply source, said sheets having connecting useful and waste portions, a track leading from the supply source through the stripper to a predetermined point, a truck on said track for receiving the lower die and its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of 'the same contours as the said useful portions,
  • a sheet stripper upper and lower dies, means for positioning the lower die to receive cut and creased sheets from a sheet supply source, said sheets having connected useful and waste portions, a track leading from the supply source through the sheet stripper to a predetermined point, a truck movable on the track to receive the lower die with its pile of sheets from the positioning means and moving the die with its pile to the sheet stripper into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as the said useful portions, means for causing the dies to coact to sever the connections between the useful and waste portions of the sheets, the truck being subsequently movable with its lower die and pile to said predetermined point, and means for releasably locking the truck at the source of sheet supply and also at the sheet stripper.
  • a sheet stripper upper and lower dies, means for positioning the lower die to receive cut and creased sheets from a supply source, said sheets having connected useful and waste portions, a track leading from the sheet supply source through the sheet stripper to a predetermined point, a truck movable on the track for receiving the die with its pile of sheets from the positioning means and moving the die with its pile to the sheet stripper into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as the useful portions, means for causing'the dies to coact to sever the connections between the useful and waste portions of the sheets, said truck being movable with its lower die and pile to said predetermined point, and means for releasably locking the truck at the source of sheet supply, at the sheet stripper and at the said predetermined point.

Description

Dec. 4, 1951 H. J. LUEHRS 2,577,424
METHOD OF AND MEANS FOR STRIPPING I cu'r AND cREAsED SHEETS Filed Dec. 31, 1946 V 5 Sheets-Sheet l Dec. 4, 1951 H. J. LUEHRS METHOD OF AND MEANS FOR STRIPPING CUT AND CREASED SHEETS 5 Sheets-Sheet 2 Filed Dec. 31
INVENTOR.
" in; ri 4 Dec. 4, 1951 H. J. LUEHRS METHOD OF AND MEANS FOR STRIPPING CUT AND CREASED SHEETS 5 Sheets-Sheet 3 Filed Dec. 51, 1946 N EQINVENTOR.
Dec. 4, 1951 H. J. LUEHRS 2,577,424
' METHOD OF AND MEANS FOR STRIPPING CUT AND CREASED SHEETS 5 Sheets-Sheet 4 Filed Dec. 51, 1946 &
Jig/7:22.
Ill
------- INVENTOR.
Dec. 4, 1951 H. J. LUEHRS METHOD OF AND MEANS FOR STRIPPING CUT AND CREASED SHEETS Filed Dec. 51, 1946 5 Sheets-Sheet 5 INVENTOR.
Patented Dec. 4, 1951 METHOD-OF ANDMEANS FOR STRIPPING OUT AND GREASED SHEETS Hans.J. Luehrs, Westerly, R..-I., assignor to.C..B. Cottrell & Sons. Company, Westerly, R. I., a corporation ofjD'elaware Application December 31, 1946;.SerialiNo. 7.19553? 24.0laims.
. 1 The objectofmy inventionis-to provide a novel method oi. and means for stripping out and.
creased. sheets arranged in. apile by the coactionof upper; andlower stripping diestosever the connections between. the useful and wasteportions; of the sheets.
invention further consists in providing oneof;the.- stripping dies with a raised waste portion contacting surface and the'other die with a raised useful portion contacting-surface. the raised surface of one of the diesbeing higher than the raisedlsurfacee of. theother die for causing a successive sheetstripping action.
inventionfurther consists inprovidingthe stripping dies with means. as, for, instance, 00-
acting projections. and. recesses. for releasably interlocking the corresponding useful, portions of the pile to prevent their unintentional displacementduringthesubsequent handling of the said useful portions.
My invention consists, more particularly, in. positioning; the lower stripping; die to receive suc cessive cut and. creased sheets thereon at the delivery end. of ,asheetcutter and creaser; moving the. lower die. with its pile of cut andcreased. sheets; to. the. sheet stripper into register with the upper stripping die; releasably locking the lower diewith its pileinregister with the upper die; moving the upperdie downwards. to strip the Waste: portions from the useful portionsof the sheets and. at the same time to releasablyinterlockthe superimposed useful portionsof the.
pile; raising theupper die to free it fromthe pile; unlocking the-lower. die. and finally. trans,- ferring. the-lower die .with its. pilev of stripped sheets. to a. useful. and waste. portionremoval position.
My-invention also; includes the provisionoi a track.- and; a. truckmovable' along, the same for transierringithelower strippin die with its-pile.
of: sheets: from the. sheetv cutter. and creaser. tor the-sheet. stripper in register with the upper stripping die and; afterthestripping operation ofthe twodies; to-transferthe stripped sheets mentsin themethodof and means for stripping.
andjhandling the;= p iles.oi cut and creased sheets 2 which will be: hereafter more particularly setforth-and claimed.
In the accompanying drawings. I.haveshown. means whereby a pileof sheetswhichhave been.
' outv and. creased to produce. two folding. boxes from. eachsheet are. transferred. from thecutter andcreaserto. the-sheet stripper and-fromthenc'e. to. a position. where theboxes. and their waste; portions may be readily removed.
i Fig- 1 represents. adetailside view of the delivery end. of a. sheet. cutter. and creaser. of: any well known or approved construction and. showing: a partially completed pileofcutand creased". sheets; a transfer. truckv also. being. shown. in. positionto. receive the lower. dieand. the sheets when the. pileis completed.
Fig. 2. representsaa detail side-view of the sheet. stripper with the lower die and the pile-of. cut. and. creased sheets transferred. by the truckint'o positionto bestripped...
Fig-.204 represents a..d'etail. vertical longitudinal. section through. the truck. to. moreclearli'y show the. manually. operated means. for lowering. and raising the truckbody.
Fig. 3 represents a detail" side view showing thepileoistripped sheetsltogether withthe lower die. transf'erredby the truck. to. their useful and wasteport'ionmemovaI.position.
Fig. 4L represents atop plan view of. the parts showninFigl.
Fi'g. 5.represent's. a top plan view ofthe. parts shown in .Fig. 2;
Fig. G represents atop plan view of the parts shown in Fig. 3'.
Fig. '7 represents a. vertical. section taken in the planeofithellne VII'-VII'0f Fig. 2;
Fig- 8 represents a. plan. view of. the pile of cut and. creased sheets. before the sheets have been stripped. g
Fig. 9.. represents atop planview ofone of the stacks of. useful portions after the. sheets have been stripped and. thewaste portionsremoved} Fig. 10.represents.a detail vertical sectiorr in which thepileof. sheets has. been stripped be tween. the-upperdie which. contacts the useful portions only of the. toprsheet-of the. pileand the lower. die which contacts. the waste portions only. of. the bottom sheetofthe pile..
Fig 11 representsa bottom plan. view 01".. the upper stripping die: 7
Fig. 12 representseaztopplan view-oithelower strippin die.
Fig. 13 representsra'detailvertical section simia larstoFig, 10: except-that the upper. die'contacts:
I the: waste portions. only; oi. the top sheet. of: the:
3 pile and the lower die contacts the useful portions only of the bottom sheet of the pile.
Fig. 14 represents a bottom plan view of the upper die shown in Fig. 13.
Fig. 15 represents a top plan view of the lower die represented in the said Fig. 13.
In the form shown in Figs. 1 to 12 inclusive, the sheet cutter and creaser l is shown as provided with the usual lifting chains 2 and removable cross-bars 3 for supporting the delivery board 4 and the lower or female die 5 of the sheet stripper in position to receive successive cut and creased sheets from the sheet cutter and creaser, which sheets comprise useful portions 6 as, for instance, folding boxes, and waste portions 1 connected thereto as is usual, the connections 6 being formed by short uncut portions which alternate with the cut through portions 6 between the said useful and waste portions 6 and I.
The sheet stripper is shown as comprising a base 8 having two pairs of posts}; and I extending upwardly therefrom. These pairs of posts are additionally supported by braces II and I2 uprising from the said base.
I The head l3 of the sheet stripper is vertically slidable on the pairs of posts 9 and I5. Two pairs of worm gears l4 and I are rotatably mounted in the head I3 and have screw-threaded engagements with their respective pairs of posts 9 and Ill. A horizontally disposed worm shaft i6 is rotatably mounted in the head l3 and it has two worms l1 and I8 meshing with their respective pairs of worm gears l4 and I5. This worm shaft I6 is shown as driven from a reversible electric motor 19 mounted on the head l3,
as by a rope 20 connecting the pulleys 2i and 22 on the motor shaft 23 and worm, shaft I6 respectively.
A track leads from the sheet cutter and creaser I through the sheet stripper to a position where the useful and waste portions of the stripped sheets may be separated and removed. Grooves 25 and 26 along the top surface of the base 8 of the sheet stripper form seats for the track rails 21 and 28.
. A four-wheeled truck is movable along the track to the delivery end of the sheet cutter and creaser l in position to receive and support the delivery board 4, the lower or female stripping die 5, and
the completed pile of cut and creased sheets. .w
This truck may be releasably locked tothe track in register with thesaid delivery board, lower die and completed pile of cut and creased sheets at this point, as by providing means for lowering the truck body 29-.onto the track bed between the track rails 2'! and 28, to cause the holes 30 in the bottom of the truck body 29 to receive the registering pins 3| located on the track bed between its rails 21 and 28.
The means for lowering and raising the truck body 29 is shown as comprising a hand wheel 32 located beyond the rear end. of the truck body, which hand wheel is carried by a horizontally disposed worm shaft 33 mounted in the truck body, between its pairs of wheels 34 and 35 in position to have its two worms 36 and 31 mesh with the wheels 38 and 39 fast on the axles 40 and 4| respectively. Pairs of eccentric axle pins 42 and 43 project from the ends of the axles 40 and 4! on which eccentric pins the pairs of truck wheels 34 and 35 are rotatably mounted.
In operation: after the truck has received the delivery board'4, the lower die 5 and the completed pile of cut and creased sheets and the crossbars 3 have been removed, the truck body 29 is raised from its locked position on the track and the truck-is moved along the track to the sheet stripper into register with the upper stripping die 44.
The truck may then be releasably locked to the track bed to register the lower die 5 with the upper die 44 by again lowering the truck body 29 by the means already described, to cause the holes 30 to receive the second set of registering pins 45 located on the track bed between the track rails 21 and 28. In this position it will be seen that the weight is taken off the truck wheels 34 and 35.
The upper stripping die 44 may then be moved downwards into contact with the top sheet of the pile and caused to exert suflicient pressure thereon to successively sever the connections 6 between the useful and waste portions of the pile of cut and creased sheets.
I Thi upper die 44 is shown as provided with a raised surface 43 arranged to contact the useful portions 6 of the top sheet of the pile and the lower die as provided with a raised surface 4'! in contact with the waste portions 1 of the bottom sheet of the pile; the raised surface 46 of the upper die being considerably higher than the raised surface 47 of the lower die to ensure a shearing action to sever the connections 6 between the useful and waste portions of successive sheets during the downward stripping movement of the upper die.
It is to be understood that the stripping dies have contours corresponding with the contours of the useful portions of the sheets to ensure a correct stripping of the sheets.
Means may be provided for causing each stack of useful portions 6 of the superimposed cut and creased sheets to be releasably interlocked as the sheets are being stripped, to facilitate the handling of the useful portions after the stripping operation. To accomplish this result the upper die 44 is provided with raised wedge-shaped pieces 48 and the lower die with relieved or recessed wedge-shaped pieces 49 which coact with e the pieces 48 to bend corresponding element of each stack of useful portions to releasably interlock them.
' After the pile of sheets has been stripped and, in the present instance, the two stacks of useful portions of the sheets releasably interlocked, the upper die 44 is raised to free it from the pile by reversing the electric motor l9. The truck body 29 is then raised to free the holes 30 from the second set of registering pins 45.
The truck with its delivery board 4, lower stripping die 5 and pile of stripped sheets with their interlocked stacks of useful portions 6 may then be moved along the track to the useful and waste portion removal position. In this position the truck body 29 may again be lowered onto the track to cause the holes 39 to receive the third set of pins 50 which are located on the track at this point. The waste portions 1 which have been severed from the useful portions 6 may now be removed and discarded and the two stack of useful portions may also be removed for further operations thereon. In the meantime, a duplicate delivery board and its lower stripping die 5 have been positioned by the chains 2 and their crossbars 3 to receive the successive cut and creased sheets of the next pile from the cutter and creaser. j
After the useful and waste portions have been removed from the truck, the truck may be again moved along the track to its first named posithe 1410i- :the embodimentshown inll i'gs. 1 to 12 inclusive, becoming the :lower ydie f5] and the lower "die 5 becoming the upper die 52. .In'the embodiment :shown :in :Figs. 13, 14 :and 15 the .raisedcsurface' 53 aof :the lower diet]! is arranged to contact theuseful-portions 6 :of the bottom sheet of'the pile .ofcutrand creasedsheets-and the raised surface :54 of the upper die 52. is-arrangedto contact'the -waste portions :1 of the top sheet of the pile. :In this embodiment the lower die 51 is providedwithzthe raised wedge-shaped pieces .55 and the upper ".die with the coacting relieved wedge-shaped pieces 55 "for releasably interlocking the superimposed useful :portionslfi of the sheets as the'sheets :are being stripped.
"From the above description it' will be 'seen'ithat cutwand creased sheets in pile form may .be zeasily and rapidly stripped by the coaction .ofisstrippin'g dies which contact the top and bottom ofthe'pile andiexer't sufiicient pressure to successively sever the connections .betweenuthe useful-and waste portions of the sheets. 7
While I have shown :andzdescribed the sheets as cut and creased to each produce "two useful portions, intheapresent"instancetwo folding box blanks, it will be understood that I do not wish to limit myself to sheets cut :and creased to produce any particular number of Said useful elements.
'What-I claim is:
"1. In a sheet stripper, upper and lower dies,
means for moving one or -the dies toward the other "dieto exert pressureon an interposed pile of "cut-and creased sheets to sever theconnec tions between the useful and waste portionsf-of the sheetsto strip them, said dies' havingcoactbetween the useful and waste portions of the sheets to strip the1n, said stripping dies having coacting cutting and stripping elements of the same contoursas the said useful portions, and means on said stripping dies coa'cting to releasably interlock the superimposed useful portions. -3. In a-sheet stripper, upper and 'lower dies and means'for-moving one of the dies toward the other die 'to exert pressure on an interposed pile of cut and creased sheets to sever the'connections between the useful-'andwaste portions of the sheets to strip them, said-stripping dies having coacti-ng'cutting and stripping elements of "the same contours'as the said-useful portions and-also having=means coacting to bendcorresponding elements of' the superimposed useful portions to releasably interlock them;
' 4. In a sheet stripper, upper and lower dies and means for moving one of the dies=toward the other die to'sever the connections between the useful and *waste-portions of a pile :ofcut and 'creased'sheets'to strip"them,'one die having a raised useful portioncontacting surface and the other 'd-ie'having a raised-waste portion contacting surface, the raised surface of one of the dies being-of greater-height than the-raised sur 6 race -of:thezother-die :to ensmewthe-stripping ac tion,..and1means on said-stripping dies :coacti-ng to :releasably interlock the superimposed useful portions.
5. In asheet stripper, upper and lower dies and means "for moving one of the "dies "toward the other .die to sever the connections between the useful and waste-portions of a pile of cut and creased sheets tostrip them, :onedie having ,a raised useful portion contacting surface and the other die having a raised waste portion contacting-surface, the raised surface of one ofthe dies being of greater height than the raised surface of ithesother die to ensure the stripping action, said stripping dieshavingprojections and recesses coacting to bend corresponding elements of the superimposeduseful portions to releasably interlock them.
6. In combination, a sheet stripper having up.- per and lower dies, .atracknbed-a track thereon passing through the sheet stripper, a "truck movable on the track to bring the lower die with :a pile of cut and creased sheets having connected useful and waste portions into register with the upper .die, said :dies having .coacting cutting: and stripping elements of the sameucontours as the said -usefuiportions, manually operated means for lowering the truck body onto the'trackxbed, and means .for moving the upper :die toward :the lower the to sever the connections between said useful and waste portions and to strip the sheets when the truck body is in :its lowered position. 1.Incombinatioma sheet stripper having upper and lower dies, a track bed, a track thereon passing'through thesheet-strippena truck movable on the-track to bring the lower die with-a pile oi out and creased sheets 'havingconnected useful and waste portions'into register-with the upper die, said -'dies "having: .coacting cutting and stripping-elements \of'the same contours asthe said =use'fulportions, manually operated means for lowering the truck-body -on-to the track bed, said truck body and track bed having coacting holes and pins to releasably lock the truck body in its loweredposition, and means for moving the upper die toward'the lower die to sever the connections between said useful and waste portions and strip the sheets when the truck body is in its lowered position. *8. In combination, a sheetstripper having upper-and lower dies, a track bed, a track passing through-the sheet stripper, a truck, wheels thereon movable on the track to bring the lower die witha pile of cutand creased sheets-having con-- nected useful and waste I portions into register with-the upper die, said dieshaving coacting cutting and stripping elements of the same contours as the saidzusefulportions, eccentric mountings forthettruck wheels, and'manually operated meansi-to impartarotary-movement to said eccentric :mount-ings ;for lmw'erine. the truck body onto ,the track bed and-thereby releasing the weight from the truck wheels, and Ineansfor moving the upper die. toward the lower die to sever the connections between said useful and .Waste portions andstrip the sheets when the truck body is in its. lowered. position. I The method vLhich',-consists in assQQ atin a ,pile of cut and creasedlsheetswith upper and lower dieshaving coacting cutting and stripping elements-"of'the samecontours as the usefukportions of the sheets, moving one of the dies toward the other die with sufiicient pressure on the pile to sever the connections between the useful and waste'portions of the-sheets andzstrip the sheets, moving the lower die together with the stripped pile of sheets to a predetermined point and thereafter separating and removing the said useful and waste portions.
10. The method which consists'in associating a pile of cut and creased sheets with upper and lower dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, said dies also having coacting useful portion interlocking elements, moving one of the dies toward the other die with sufficient pressure on the pile to ,sever the connections between the useful and waste portions of the sheets, strip the sheets and releasably interlock the superimposed useful portions of the sheets, moving the lower die together with the stripped pile of sheets to a predetermined point and thereafter separating and removing the said useful and waste portions.
11. The method which consists in associating a pile of cut and creased sheets with upper and lower dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, said diesalso having coacting-useful portion bending elements, moving one of the dies toward the other die with sufficient pressure on the pile to sever the connections between the useful and waste portions of the sheets, strip the sheets and bend corresponding parts of the superimposed useful portions to releasably interlock them, moving the lower die together With the stripped pile of sheets to a predetermined point and thereafter separating andremoving the said useful and waste portions.
12. The method which consists in moving a pile of cut and creased sheets together with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, moving the upper die downward to exert sufficient pressure on the pile to sever the connections between the useful and waste portions of the sheets and strip the sheets and thereafter transferring the lower die with its pile of stripped sheets to a useful and waste portion separation and removal position.
13. The method which consists in moving a pile of cut and creased sheets together-with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, the dies also having useful portion interlocking elements, moving the said upper die downward to exert sufi'icient pressure on the pile to sever the connections between the useful and waste portions of the sheets, strip the sheets and releasably interlock the superimposed useful portions, and thereafter transferring the lower die with its pile of stripped sheets to a useful and waste portion separation and removal position.
14. The method which consists in moving a pile of cut and creased sheets to ether with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, releasably locking the lower die with its pile in such register, moving the upper die downward with sufficient pressure on the pile to sever the connections between the useful and waste portions of the sheets and strip the sheets and thereafter transferringthe lower die with its 8v pile of stripped sheets to a useful and waste portion separation and removal position.
15. The method which consists in moving a 'pileof cut and creased sheets together with a lower stripping die from a suitable source into register with an upper stripping die, said dies having coacting cutting and stripping elements of the same contours as the useful portions of the sheets, the dies also having useful portion interlocking elements, moving said upper die downward to exert sufficient pressure on the pile to sever the connections between the useful and waste portion of the sheets, strip the sheets and at the same time releasably interlock the superimposed useful portions, and thereafter transfer-1 ring'the lower die with its pile of stripped sheets to a useful and waste portion separation and removal position. 1
16. In a sheet stripper, upper and lower dies, means for positioning the lower ,die to receive successive cut and creased sheets having connected useful and waste portions, means for receiving the lower die with its pile of sheets from the positioning'meansand moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as said useful portions, and means for moving the upper die downward to sever the waste portions from the useful portions of the superimposed sheets and strip them and then upward to free the die from the pile. r
17. In a sheet stripper, upper and lower dies, means for positioning the lower die to receive successive out and creased sheets having connected useful and waste portions, means for receiving the lower die with its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as said useful portions, means for releasably locking the pile in its registered position, and means for moving the upper die downward onto the pile to sever the waste portions from the useful portions of the superimposed sheets and strip them and-then upward to free the die from the pile.
13. In a sheet stripper, upper and lower dies, means for positioning the lower die to receive successive cut and creased sheets having connected usefuland waste portions, means for receiving the lower die with its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the-same contours as said useful portions, and means for moving the upper die downward to sever the waste portions from the useful portions of the superimposed sheets and strip them and then upward to free the die from the pile, the lower die being subsequently movable 'with its pile of stripped sheets to a predetermined point.
19. In a sheet stripper, upper and lower dies, means for positioning the lower die to receive successive cut and creased sheets having connected useful and waste portions, means for receiving the lower die with its pile of sheets-from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as said useful portions, means for releasably locking the pile in its registered position, and means for moving the upper die downward onto the pile to sever the waste portions from theuseful portions of the 9 superimposed sheets and strip them and then upward to free the die from the pile, the lower die being subsequently movable with its pile of stripped sheets to a predetermined point.
20. In a sheet stripper, upper and lower dies, means for positioning the lower die for receiving from a sheet supply source successive cut and creased sheets having connected useful and waste portions, means for receiving the lower die and its pile from the positioning means and moving the die with its pile into the sheet stripper in register with the upper die, said dieshaving coacting cutting and stripping elements of the same contours as said useful portions, and means for moving the upper die downward onto the pile to strip the'waste portions from the useful portions and for thereafter raising the upper die, the lower die being subsequently movable with its pile of stripped sheets to a predetermined point.
21. In a sheet stripper, upper and lower dies, means for positioning the lower die to receive from a sheet supply source successive sheets having connected useful and waste portions, a track leading from the supply source through the stripper to a predetermined point, a truck on said track for receiving the lower die and its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements, means for releasably locking the truck in its registered position, and means for moving the upper die downward onto the pile to sever the useful and waste portions of the sheets and then upward to free the die from the pile, the truck being subsequently movable with its lower die and pile to said predetermined point.
22.'In a sheet stripper, upper and lower dies, means for positioning the lower die to receive successive cut and creased sheets from a sheet supply source, said sheets having connecting useful and waste portions, a track leading from the supply source through the stripper to a predetermined point, a truck on said track for receiving the lower die and its pile of sheets from the positioning means and moving the die with its pile into register with the upper die, said dies having coacting cutting and stripping elements of 'the same contours as the said useful portions,
means for lowering the truck body onto and raising it from the track bed, means for releasably locking the truck in its lowered position, and means for moving the upper die downward onto the pile to sever the useful and waste portions of the sheets and then upward to free the die from the pile, the truck being subsequently movable with its lower die and pile to said predetermined point.
23. In a sheet stripper, upper and lower dies, means for positioning the lower die to receive cut and creased sheets from a sheet supply source, said sheets having connected useful and waste portions, a track leading from the supply source through the sheet stripper to a predetermined point, a truck movable on the track to receive the lower die with its pile of sheets from the positioning means and moving the die with its pile to the sheet stripper into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as the said useful portions, means for causing the dies to coact to sever the connections between the useful and waste portions of the sheets, the truck being subsequently movable with its lower die and pile to said predetermined point, and means for releasably locking the truck at the source of sheet supply and also at the sheet stripper.
24. In a sheet stripper, upper and lower dies, means for positioning the lower die to receive cut and creased sheets from a supply source, said sheets having connected useful and waste portions, a track leading from the sheet supply source through the sheet stripper to a predetermined point, a truck movable on the track for receiving the die with its pile of sheets from the positioning means and moving the die with its pile to the sheet stripper into register with the upper die, said dies having coacting cutting and stripping elements of the same contours as the useful portions, means for causing'the dies to coact to sever the connections between the useful and waste portions of the sheets, said truck being movable with its lower die and pile to said predetermined point, and means for releasably locking the truck at the source of sheet supply, at the sheet stripper and at the said predetermined point.
HANS J. LUEHRS.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 558,864 Van Osta Apr. 21, 1896 1,365,070 Zealand Jan. 11, 1921 1,981,974 Vernimb Nov. 27, 1934 1,983,708 Ruble et a1 Dec. 11, 1934
US719553A 1946-12-31 1946-12-31 Method of and means for stripping cut and creased sheets Expired - Lifetime US2577424A (en)

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US276343A US2751881A (en) 1946-12-31 1952-03-13 Fish diverting means

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757585A (en) * 1950-11-03 1956-08-07 Cornell Paperboard Products Co Method and apparatus for removing waste from box blank sheets
DE1052789B (en) * 1954-06-09 1959-03-12 Molins Machine Co Ltd Sheet feeder
EP0376274A2 (en) * 1988-12-27 1990-07-04 Hideo Morimoto Separating method and device for separating a shaped section from a waste section
US5179882A (en) * 1989-02-20 1993-01-19 Nippon Die Steel Co., Ltd. Waste removing apparatus
WO1998001269A1 (en) * 1996-07-03 1998-01-15 Texo S.R.L. Splitting machine for corrugated board profiles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US558864A (en) * 1896-04-21 Leather-cutting machine
US1365070A (en) * 1919-07-03 1921-01-11 Zealand Jonathan Coupon-cutter
US1981974A (en) * 1931-07-20 1934-11-27 Vernimb August Automatic stripping machine for folding box work
US1983708A (en) * 1931-11-02 1934-12-11 Miehle Printing Press & Mfg Box blank mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US558864A (en) * 1896-04-21 Leather-cutting machine
US1365070A (en) * 1919-07-03 1921-01-11 Zealand Jonathan Coupon-cutter
US1981974A (en) * 1931-07-20 1934-11-27 Vernimb August Automatic stripping machine for folding box work
US1983708A (en) * 1931-11-02 1934-12-11 Miehle Printing Press & Mfg Box blank mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757585A (en) * 1950-11-03 1956-08-07 Cornell Paperboard Products Co Method and apparatus for removing waste from box blank sheets
DE1052789B (en) * 1954-06-09 1959-03-12 Molins Machine Co Ltd Sheet feeder
EP0376274A2 (en) * 1988-12-27 1990-07-04 Hideo Morimoto Separating method and device for separating a shaped section from a waste section
EP0376274A3 (en) * 1988-12-27 1992-01-29 Hideo Morimoto Separating method and device for separating a shaped section from a waste section
US5179882A (en) * 1989-02-20 1993-01-19 Nippon Die Steel Co., Ltd. Waste removing apparatus
WO1998001269A1 (en) * 1996-07-03 1998-01-15 Texo S.R.L. Splitting machine for corrugated board profiles
US6162161A (en) * 1996-07-03 2000-12-19 Texo S.R.L. Splitting machine for corrugated board profiles

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