US1547602A

US1547602A - Box-flap-cutting mechanism

Info

Publication number: US1547602A
Application number: US724494A
Authority: US
Inventors: Ellwood A Metz; Thomas S Fitchett
Original assignee: F X HOOPER Co
Current assignee: F X HOOPER Co
Priority date: 1924-07-05
Filing date: 1924-07-05
Publication date: 1925-07-28
Anticipated expiration: 1942-07-28

Description

Jul 28, 1925."

E. A. METZ ET AL BOX FLAP CUTTING MECHANISM Filed July 5, 1924 2 SheetS Sbeet 1 6.10: neg

' July 28, 1925. 1,547, 02

E. A. METZ ET AL BOX FLAP CUTTING MECHANISM Filed July 5, 1924 2 Sheets-Sheet 2 f f 11? I 2 /l Patented July 28, 1925.

UNITED ELLWOOD A. TJIETZ AND TH'QIYIASS. FITOHE'IT, 0F GLENAB/IVI, MARYLAND, 'ASSIG'NORS' P QLFF 5 T0 F. x. HOOPER COMPANY, onGLENAam'MARYI-Ann, A oonronerion Osman-Y LAND.

BOX-.FLAP-CUTTING MECHANISM.

Application filed July 5 To all whom it may, concern! Be it known that we, ELLWOOD A. Mnrz and; THOMAS, S. Fironn'rr, citizens of the United States, residing at Glena-rm, in-the county of Baltimore. and State of Maryland, have invented certain new and useful Improvements in B0x-Flap-Cutting Mechanism, of which the following is a specification,

This invention relates to mechanism for, cutting the flaps. of box blanks, and also for scoring the blanks. The invention. is shownas an attachment to apress for printng-upon 11. 1 n s, w re y he anks. may be printed, scored, and have their flaps cut during their passage through the press. The attachment may, however, be used separately from the press, when provided, with suitable feeding mechanism.

In carrying out the invention, we pro-. vide parallel shafts carrying heads upon which are mounted the knives for cutting the flaps, and these shafts. also carry heads having scoring segments for scoring the blanks. Through suitable gearing, these shafts. are timed to the movements, of the shaftscarrying the printing cylinders, and as the blanks leavev the printing cylinders they are carried between the pairs of scor-v ing. and cutting heads, where the-blanks are scored and their alternate flaps; are cut. The, knives for cutting off the flaps arranged upon pairs of heads at opposite sides of the attachment. One head of each pair carries two relatively short segmental knives which, in practice, have, two of their adjacent ends spaced apart circu nferentially a distance substantially equal to thelength of a, flap on the box blank which is to be left uncut, and the other head carries a relatively long segmental knife' Which is adapted, to overlap the other knives and to co-operate therewith in cutting thefljaps, one end of; therela'tive-ly, long knife, in the. practical operation of:

v the machine, being circumferentially spaced from the end; of one of the shorter knives, when the latter is. at the cutting point, a distance equal to the length of; a flapwhich is. to, be cut. Thus arranged, the knives.

1924,, s a NO- 72.4. 94.-

Will. cut: h a rnate flaps witho t cutting: n er diatefi ps, Thekni es ar aljustable about their. axes and, by suitablysetting the knives, fiapsof various lengths may be cut, and; the first andthird;,;0r the second and fourth flaps. may be out, as desired. A

In the accompanying drawing, Fig. l; is a side. elevation ofgpart of a printing press a-ndthe flap cutting and scoring attachment;

Fig. 2 is an end view of, the same, looking from right to left in, Fig. 1, parts being, oken a y;

F g, 3 is a e a l V e sh ing part; at a utter he d, a. kn ev nd the; lamping means for the knife, in section; I

g- 4 is. a d agrammatic View illustrating the arrangement of the knives on the cutter heads. foncutting the first and third flaps of ab an Fig. 5is a. planview. of ablank showing, in dotted lines, the. cuts. made by, the knives when adjusted asin F ig. 4L; I I Fig, 6 is, a diagrammatic viewill'ustrating the arrangement of thevknives on the cutter heads for cutting. the second and fourth flaps-of a, blank; and, p

Fig. 7' is a .plan View of a; blankv showing, in. dotted} lines, the. cutsv made. by the knives when adjusted as in- Fig- 6.

Referring tohthe. drawing, a represents the frameof afprinting press forprinting on sheets. of stiff mateniahsuch. as strawboand, fiber, and the. like, one of the printing cylinders being indicated at b, and an impression, cylinder being indicatediat 0. The sheets to, be printed .upon, such. as. box blanks, are fed to the'press by'suitablefeeding mechanism, not shown, and are carried along from left to right, in Fig. 1, onthe bed 1 of the press, by pull rollers, and after. the impressions are made upon the blanksby the printingorform cylinders, theyl are. carried by pull rollers to the flap cuttingv and: off-set scoring devices. which. are mounted on.

shafts

2 and 3. These shafts are. suitably mounted on a framev d, which is; arranged; at the delivery end of; the printing press. The pull rollers 39, which are mounted on shafts 4 and 5 of the printing press, pass the blanks along to the pull rollers p on shafts 6 and 7 on the frame d, and these pass the planks to the pull rollers 29 on shafts 8 and 9, from whence the blanks are passed to a delivery belt 6. The power for operating the press is applied through a pulley 10 to a shaft 10, having a gear 11 which meshes with a gear 12 on a shaft 13, which carries the impression cylinder 0. Uponthis shaft, at the opposite side of the machine from that shown in the drawing, is a gear 14 which meshes with a large idle gear 15, and the latter meshes with a large gear 16. The gear 16 engages a large gear 17 on a shaft 18, which carries the form'cylinder Z2, and it also meshes witha gear 19 of the same diameter as the gear 17, this gear 19 being secured to the shaft 2 which carries the upper cutter and scoring heads. The gear 19 engages a gear 20 which, in turn, engages a gear 21, and the gear 21 engagesa gear 22 on the shaft 3, which carries the lower cutter and scoring heads. The

shafts

2 and 3, which carry the cutter and scoring heads, are geared to turn at the same speed as the shaft 18, carrying the form cylinder. The various pull rollers may be; geared in any suitable way to the driving shaft. As shown, the pull rollershafts 4 and 5 011- the press frame are driven through gears on said frame as follows: The pull roller 5 is operated from the driving shaft 10, through gears 23, 24 and 25'; the pull roller shaft 4 is operated from the gear 24, through

gears

26, 27, 28, and 29. The pull roller shafts 6, 7, 8, and 9 011 the framed of the cutting and scoring attachment are oper ate-d from a gear 22 on the shaft 3. As shown, the pull roller 7 isoperated from the gear 22, through gears and 31, and the pull roller'shaft 6 is operated from gear 23, through gears 30, 32 and 33. V The pull roller shaft 9 is operated fronr gear 22, through gear 34. meshing therewith, which gear is mounted upon a stud 35, and secured to the gear 34fis a larger gear 36, which meshes withgear 37 on the shaft 9. A gear 38, engagingthe gear 36, drives a gear 39 which, in turn, drives a gear 40 which meshes with a gear 41 on thevpull roller shaft 8. Thus, the various pull rollers are driven in unison. t 1

Upon the shaft 2 are mounted circular heads'or wheels fif, which carry segmental offset scorin members 42 a'da ted to co operate with scoring rings or members on similarheads g, g, mounted'upon the shaft 3. These scoring members need not be particularly described, as they are Well known. At the sides of the scoring heads f, f, are

7 heads h, h, each of which carries two rela tively short segmental cutters, .indicated at 43 and 44. Upon the lower shaft 3 are arranged cutter heads 7', j, each of which carries a relatively long segmental cutter 45, arranged in shearing relation to' the cutters on the heads h, it, and adapted to co-operate with the latter cutters in cutting off the alternate flaps of the box blanks as they pass between the cutter heads.

The knives are adjustably mounted in grooves 46 in the cutter heads. As shown in the detail View Fig. 3, theknife 45 is arranged within a groove 46 which is formed by a flange 47 on the head hand a clamping ring 48 which is secured to said head and opposed to said flange. Each cutter has a longitudinal recess 49 on one side, and a suitable number of clamping screws 50 extend through the ring 48 and into the adjacent recess 49 in the cutter, and

when these screws are tightened, the knife or cutter is held firmly in place. To adjust the. cutter circumferentially about the head, the screws 50 may be loosened, and the knife or cutter may then be slid around in the groove 46 to any desiredposition of adjustment and then clamped by tightening the screws. y f 1 l The box-blanks h, Fig. 5,are transversely slotted, as shown at 51,52, and 53, before they are fed into the printingpress, and they pass endwise through thepress and are printed upon and then pass between the upper and lower scoring and cutting devices. If the blanks pass between these devices in the direction of the arrow, Fig. 4, and it is desired to cut off the ends of the first and third flaps '56 and 58 of the blank, the knives 44 on the cutter heads will be set so that their rear ends 44 will be in linewith the axes of the

shafts

2 and 3 when the slots 51 in the blank are on this same line. The forward ends 43 of the knives 43 will be spaced from the ends44 of the knives 44 adistance equal to the distance between the centers of the

slots

51 and 52, and the knives 45 will be set so that when the ends 43? of the knives 43 meat the cutting point, in line with the axes of the

shafts

2 and 3, the rear ends 45 of the knives 45 will bespacedciroumferentially a distance from the ends 43 equal to the distance between the centers of the

slots

52 and 53 in the blank. The

several knlves are preset to suit the cutting of the blanks by the aid of suitable'graduation marks on the heads.

With the knives arranged as shown in Fig. 4,when the blank k is fed in the direction of the arrow, the fiaps56 will be engaged by theforward orl'eading parts of the

knives

44 and 45 and the ends of the flaps 56fwill be out off along the dotted lines to. Thiscutting operation will cease when the ends 44 of the knives 44 reaches the line joining the axes of the

shafts

2 and 3, at which time the slots 51 will be on said line. As there is -a gap between the ends 44 and 43 'of the knives on the upper heads, only the lower knife will engage the blank while the flaps 57 are passing the cutting point and therefore these flaps will not be cut. The ends 43* of the knives 43 will be at the line joining the axes of the

shafts

2 and 3 when the slots 52 are on said line, and the

knives

43 and 45 will then cut flaps 58 until the rear ends 45 of the knives 45 reach the line joining the axes of the

shafts

2 and 3, at which time the slots 53 will also be at said line and the cutting operation will cease. As only the knives 43 will be in engagement with the blank when the flaps 59 are passing the cutting point, these flaps will not be cut.

If, instead of cutting the first and third flaps on the blank, it is desired to cut the second and fourth, the knives will be adjusted as illustrated in Fig. 6; that is, the

knives

43 and 44 will have their

ends

43 and 44 spaced apart a distance equal to the width of the flaps which are not to be out, and the leading ends 45 of the knives 45 will be arranged to overlap the rear ends 44 of the knives 44 by a distance equal to the width of the flaps which are to be out. With this arrangement of the knives and proper timing of the feeding mechanism of the blank, when the first flaps 60 of the blank,

Fig. 7, are passed between the cutting heads,

only the leading portions of the knives 44 will engage the blank and these flaps will not be cut off. The leading ends 45 of the knives 45 will then engage intermediate parts of the knives 44 and the knives will be in cutting engagement while the flaps 61 are passing between the heads and these flaps will be cut off along the dotted lines :20. lVhile the flaps 62 are passing between the heads, they will be engaged only by the knives 45 and will not be cut. When the flaps 63 are passing between the heads, the leading ends 43 of the knives 43 will engage the knives 45 at the slots 51 and these flaps will be out along the dotted lines m, (Fig. 7).

It will be evident that by adjusting the knives on the heads it relatively to one another, and by adjusting the knives 45 on the heads relatively to the knives on the heads h, the knives may be arranged to cut off flaps of various lengths and the knives may be caused to operate successively on the first and third flaps of a blank, or upon the second and fourth flaps, as desired.

For convenience in setting the knives to cut the flaps, the heads on which the knives are mounted are, in practice, provided with graduation marks (not shown), so that the ends of the knives can be preset to cut alternate flaps of any given length.

As the blanks pass through the attachment, the scoring members 'willeffect off-set scoring, as indicated at y on the blanks.

By arranging the scoring and flap-cutting attachment at the delivery end of a press, and tllillngtllfi movements o'f the'scoring-and cutting members to the movement of the printing cylinder or cylinders, a large saving in labor is effected, as the blanks do not have to be re-handled before being scored and out.

What we claim is:

1. A machine for cutting the flaps of box blanks comprising two cutter heads geared to operate in unison, one having two relatively short spaced segmental knives, and the other having a relatively long segmental knife adapted to overlap both of said short knives.

2. A machine for cutting the flaps of box blanks comprising two cutter heads geared to operate in unison, one having two relatively short spaced segmental knives, and the other having a relatively long segmental knife adapted to overlap both of said short knives, said relatively long knife being adjustable about its axis to vary its relation to said other knives.

3. A machine for cutting the flaps of box blanks comprising two cutter heads geared to operate in unison, one having two relatively short spaced segmental knives adjustable about their axis relatively to one another, and the other having a relatively long segmental knife adapted to overlap both of said short knives.

4. A machine for cutting the flaps of box blanks comprising two cutter heads geared to operate in unison, one having two relatively short spaced segmental knives adjustable about their axis relatively to one another, and the other having a relatively long segmental knife adapted to overlap both of said short knives and adjustable about its axis to vary its relation to said latter knives.

5. A machine for cutting the flaps of box blanks comprising two cutter heads geared to operate in unison, one having two relatively short segmental knives, the ends of which are spaced apart circumferentially of the head a distance equal to the length of a flap which is not to be cut, and the other having a relatively long segmental knife adapted to overlap said short knives and having one of its ends circumferentially spaced from an end of one of said shorter knives, when the latter is at the cutting point, a distance equal to the length of a flap which is to be cut.

6. A machine for cutting the flaps of box blanks comprising two cutter heads geared to operate in unison, one having two relatively short segmental knives, the ends of which are spaced apart circumferentially of the head a distance equal to the length of a flap which is not to be cut, and the other having a relatively long segmental knife justable relatively to one another about the adapted to overlap said short knives and axes of their respective heads. having one of it end i mfe ti ll In testimony whereof We hereunto aflix our 10 spaced from an end of one of said shorter slgnatures- 5 knives, When the latter is at the cutting point, a distance equal to the length of a fla whic his to be cut, said knives being a ELLWOOD A; METZ. THOS. S. FITOHETT.