US1746284A - Rotary creasing and scoring machine - Google Patents

Description

Feb. 11, 1930.

J. "r. ROBINSON ET AL ROTARY CREASING AND SCORING MACHINE Filed April 1 1927 4 Sheets-Sheet I N VENLEI l S Q14 AHya- '4 Sheets-Sheep 2 J. T. ROBINSQN ET AL ROTARY CREASING AND SCORING "ACTH"! Filed April 13, 192'! I if Feb. 11, 1930.

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Filed A ril 13, 7 4 Sheets-Sheet 3 W EF Feb. 11,1930. J. -r. ROBINSON ETAL A 1,746,284

ROTARY CREASING AND SCORING Cl INS Filed April 13, 1927 4 Sheets-Sheet 4 Patented Feb. 11 1930 UNITED STATES mm 'r. nonrivsonnnnenonen n. accents, on BosroN, MASSACHUSETTS, essrenons PATENT OFFICE TO JOHN T. ROBINSON COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION on MASSACHUSETTS ROTARY cnnnsrive AND SCORING MACHINE Application filed April 13,

This invention relates to machines for operof the creasing and scoring devices in accordance with the requirements of the particular work to be done.

creasing machines as heretofore constructed have usually included a pair of rolls between which the stock'is passed, said rolls having complementary peripherally arranged 15 surfaces which cooperate to form a crease or creases in the stock during the passage of the latter therebetween. Such rolls have usually been relatively adjustable in accordance with the thickness and character of the stock, but

only as a whole, whereas in machines. ar-

ranged toform a plurality of creases at a single operation it is frequently desirable to adjust the several sets of creasing elements independently of one another. It is an obzs ject of the present invention to, provide means whereby this can be readily accomplished. e p

In some classes of'work it is desirable to form a crease relatively close to the edge of the completed blank, and where said edge is determined by cutting the'blank by means of cutting devices associated with the creasing devices and operating concurrently therewith, considerable difficulty hasbeen enas'countered in machines of this character as heretofore constructed in setting the scoring or other cutting devices sufliciently close to the creasing devices. Similar difiiculties have been encountered in other cases where 40*the workis to be creased or scored along parallellines spaced relatively close to one another. .In accordance with the present in-. ventiomthis difiiculty is overcome by arranging the creasing and scoring devices in a plurality of units arranged to operate successive ly upon the work, the several creasing or scoring devices being suitably distributed between the several units, so that devices intended tooperate on the stock along closely adjacent parallel linesmay be located in dife 1927. Serial No. 183,505.

ferent units and therefore spaced laterally as closely as may be desired. In connection with this feature of the invention, means are provided whereby the devices in the several units may be conveniently collocated with reference to the work. a e e l p The mechanism constituting the illustrative embodiment of the invention shown and described herein is especially adapted for use in, a double creasing and scoring machine wherein a single sheet of stock is caused to travel successively through primary and final mechanisms, with an intermediate change of direction of travel, to divide said sheet'into a plurality of blanks creased along intersecting lines. In such a machine it is desirable that the sheet be left-intactuntil its passage through the final mechanisnr in order to facilitate its feeding to the latter, and the cutting mechanism employed, particularly in connection with the primary mechanism, is thereforeadapted to score the sheet only, instead of completely shearing the same, and asherein shown comprises a scoring disk cooperating with, but spaced slightly from, a plain cylindricalsurface on the opposing roll or element. l a

The foregoing and other objects of the invention, together with means whereby the latter may be carried into effect, will best be understood from the following description of a preferred embodiment thereof illustrated in the accompanying drawings. It. will be understood, however, that the particular construction described and shown has been chosen for purposes of exemplification merely, and

that said invention, as defined by the claims hereunto appended, may be otherwise em- .bodied without departure from the spiritand scope thereof.

In said drawings: Fig. l is a plan view of the substantially complete machine.

Fig.2 is a side elevation of the primary of a portion of the stock, showing the cut formed by the complementary scoring devices.

Fig. 6 is a similar view illustrating the crease formed by the complementary creasing devices.

Fig. 7 blank.

Fig. 8 is an enlarged elevation, partly in section, of a portion of the mechanism shown in Fig. 3.

Fig. 9 is a detail rear elevation of a pair of complementary scoring devices.

F1 10 is a similar View of a pair of creasing d evices.

ig. 11 is a side elevation of the devices shown in Fig. 10.

Fig. 12 is a fragmentary detail elevation of the collocating gauge.

Fig. 13 is a detail section taken substantially on the line 13-13, Fig. 12.

Fig. 14 is adetail rear elevation and Fig. 15 is a detail side elevation of one of the adjustable shaft bearings.

Referring to Fig. 1, the double creaser and scorer shown therein comprises two creasing and scoring mechanisms, or sets of creasing and scoring mechanism, disposed at right angles to one another, namely, a primary creasing and scoring mechanism generally designated by the letter A, and a final creasing and scoring mechanism generally designated by the letter B, together with a feed table over which the work is fed by hand to the primary mechanism A, a transfer table 21 to receive the work from the primary mechanism and from which it is automatically fed to the final mechanism B, a delivery table 22 to receive the finished work from the final mechanism, and certain devices hereinafter described for operatively connecting and coordinating the two mechanisms. In the particular arrangement shown, a sheet S of cardboard or other stock is, during its passage through the primary mechanism A, scored along parallel lines 8 to trim its edges and divide the same in one direction, and likewise creased along parallel lines c, said sheet during its passage through the final mechanism B being similarly scored at a and creased at 0 along lines transverse to the lines a and 0, thereby dividing the sheet S into a plurality of blanks I) (see along Fig. 7 These blanks may be readily separated from one another by breaking the sheet along the scored lines 8 and s, but it will be observed that said sheet, notwithstanding its scoring by the primary mechanism, remains sufiiciently intact to be capable of being fed as a whole to the final mechanism by the transfer devices hereinafter described.

Except as hereinafter pointed out, the creasing and scoring mechanisms A and B are substantially alike and each comprises a plurality of units through which the stock is is a plan view of a completed box passed successively to score and crease the same along the desired parallel lines. Usually, and as herein shown, two units are sufficient, the same comprising two bars 23 and 23 mounted in fixed parallel positions in the machine and two parallel shafts 24 and 24 disposed parallel and adjacent to the bars 23 and 23 respectively. Conveniently, and as herein shown, the frame of each creasing and scoring mechanism may include a pair of parallel side uprights 25 between which the table 20 or 21, as well as the bars 23 and 23 are supported, said uprights carrying suitable bearings in which the shafts 24 and 24 are j ournalled. The side uprights 25 may also support suitable devices for guiding the stock in its passage from one of the units to the other, and from the second unit to the transfer or discharge table as the case may be. As herein shown, suitable guide members 26 are secured, as by set screws 27, to bars 28 supported at their ends in said uprights and extending therebetween. Suitable means are also provided for rotating the shafts 24 and 24: in unison and in the same direction. said shafts are provided with gears 29 and 29 connected by an idler gear 30, the shaft 24" being provided with a driving pulley 31 to which power from any suitable source may be applied through a suitable belt, not shown.

Separately, detachably, and adj ustably mounted on the bars 23 and 23 are creasing and scoring devices corresponding in numher and arrangement to the scored and creased lines of the blank, some of said devices being car 'ied by one of said bars and the remainder by the other bar, the several devices being distributed between the bars as may be most convenient in order to provide the desired lateral spacing. As herein shown, the creasing devices are carried by the bar 23 and the scoring devices by the bar 23, but the arrangement may be otherwise as preferred. Preferably, and as shown, the creasing devices 32 and scoring devices 33 comprise disks or wheels rotatably mounted in carriers 34 adjustable, as by means of adjusting screws 35, in holders 36 detachably secured, as by set screws 3?, to the bar 23 or 23. It will be seen that the holders 36 with their creasing or scoring devices can be applied at will to the bars 23 and 23 or removed therefrom, or adjusted therealong transversely of the machine in accordance with the requirements of the work, and that different types of creasers may be substituted for one another according to the kind of stock to be operated on. It will also be seen that by manipulation of the adjusting screws the several creasing and scoring devices can be independently adjusted toward and from the shafts 24 and 2 1*.

The creasing devices 32 have peripheral surfaces shaped to cooperate with complementary surfaces on the shaft 2% or 246 to crease the stock S in any suitable manner, as for As shown,

example as shownin Fig. 6. To this end, and

as most clearly shown in Fig. 10, the creasing.

wheel or disk 32 is formed with a peripheral groove which receives a rib 38 on the shaft 24 or 24*. Each rib 38 is formed on a ring or collar 39 adjustab-ly secured tosaid shaft, as by a clamping screw 40 (Fig. 11) having a head engaging an undercut groove 40 in the shaft, whereby said ring or collar may be adjusted along said shaft in accordance with 24, the adjustment of said disks with respect to said surfaces being preferably such as to cut the stock S only part way through, as shown at s in Fig. 5. The cooperating surface on the shaft may comprise a single roller extending continuously across the machine,

but preferably, and as shown in Fig. 9, the cooperating surface for each scoring disk is formed upon aring or collar 42, also of split construction similar to that of the creasing ring or collar 39, whereby the same may be readily applied to, removed from, or adjusted along the shaft, and whereby the collars 39 and 42 are interchangeable in accordance with the requirements.

The bars 23 and 23*, while occupying fixed positions in the machine, as above stated, are

preferably pivotally mounted therein to turn about fixed transverse axes into operative or inoperative position. As shown, sa1d bars are formed with trunnions 43 suitably journalled in the uprights 25 and are provided with operating handles 44, whereby they may be readily turned upon said trunnions into the operative positions shown in Figs. 2 and 3, and in full lines in Fig. 8, or into the in verted or setting position shown in dotted lines in the latter figure. The levers 44 cooperate with fixed segments 45 carried by the side uprights 25 and are provided with pivoted, manually operated latches 46 cooperat-v ing with openings 47 in said segments, where by the bars may be locked in either'position. When the bars are in operative position, the creasing and scoring devices thereon are brought into cooperative relationship with the complementary surfaces on the shafts 24 and 24 and when said bars are turned into their inverted positions, said creasing and scoring devices are brought into a position adjacent the top of the machine where they can be conveniently applied to, removed from, or adjusted on their respective bars.

For the purpose of facilitating the setting of the creasing and scoring devices in their proper relative positions on the several bars,

the collocating gauge most clearly shown in Figs. 8, .12 and 13 may be provided. As shown in said figures, said gauge comprises a bar 48 extending transversely across the machine and carried at its ends by slides 49 mounted for movement longitudinally of the machine on guides or rods 50 carried by brackets 51 secured to the tops of the uprights 25. Secured, as by set screws 52, to the bar 46 are straps 53 connected by hinges 54 to a suitable scale 55. It will be seen that the gauge can be moved longitudinally of the machine into juxtaposition with the bars of the severalunits, the hinged mounting of the scale 55 facilitating this operation when the bars are turned into setting position, and said scale therefore employed for collocating the settingof the several creasing and scoring devices on the respective bars.

The stock, after passing through the creasing and scoring devices of the primary mechanism A, is discharged therefrom upon the transfer table 21 by a pair of feed rollers 56 provided with intermeshing gears 57 one of which is connected by an idler gear 58 with the gear 29 on the shaft 24*. The sheet is discharged upon said table with sufficient momentum to cause the same to be positioned on sald table by engagement with a pos1tioning gauge 59 thereon, and is fed therefrom into the final mechanlsm B by transfer mechanism comprising a pusher 60' connected by a link61 with a lever 62 pivoted at 63 to one of the side uprights 25 of the mechanism B. The lever 62 carries a cam roller 64 cooperating with a cam 65 on a shaft 66 ournalled in suitable bearings in the base of said mechanism. The shaft 66 is driven from the shaft 24 of the mechanism B by change speed gearing, whereby the feeding of the work into the final mechanism may be controlled in accordance with the requirements. shaft 66 has slidably mounted thereon but connected thereto for rotation therewith a gear 67 which is carried by a lever 69 loosely mounted on said shaft for angular and longitudinal movement with respect thereto. The

gear 67 meshes with an idler pinion 68 on the lever 69, said idler pinion having fast thereto a co-axial idler gear 70, which, by angular and longitudinal movement of the lever 69, can be engaged with any one of a series of coaxial gears 71 of different sizes fast on shaft 24 j The shafts 24 of the mechanisms A and B are connected for rotation in unison by bevel As shown, the i able in order to make the creasing and scoring devices run true, without springing or deflection of the shafts due to the pressure exerted upon said shafts by the cooperating devices on the bars 23 and 23, means are preferably provided for supporting said shafts intermediate their ends, said supporting means being adjustable longitudinally of the shafts so as not to interfere with the free m longitudinal adjustment of the devices on said shafts. As shown in Figs. 3, 4, 14 and 15, a pedestal 74 is supported on a cross member 75 connecting the side uprights of the machine frame, said pedestal having a flat upper face disposed adjacentthe shafts 24 and 24 and formed with under-cut grooves 7 6 parallel to said shafts respectively. Supported on said upper face of the pedestal 74: are brackets 7 7 which are adjustably secured so to said face by clamping devices preferably in the form of bolts 78 having heads 7910- cated in the grooves 76. Carried by the brackets 77 are bearing members 80, said bearing members being verticallyadjustable onas said brackets toward and from the shafts by adjusting screws 81, and being secured in ad justed position thereon by clamping bolts 82.

The bearing members 80 are shaped to co operate with bearing rings 83 adjustably se- 80 cured to the shafts by keys 85 engaging the grooves in said shafts. The bearing members are segmentally formed so as to engage the bearing rings 83 at their lower sides on but may, if desired, be provided with I detachable covers 84 extending over the rings and shafts.

Having thus described our invention, we claim V 1. In a machine for operating upon sheet stock to form box blanks therefrom, the combination of a double creasing and scoring machine comprising, in combination, two sets of creasing and scoring mechanisms disposed at right angles to one another and means for transferring the stock from one of said mechanisms to the other, each of said mechanisms com rising a plurality of bars mounted in fixe parallel positions in the machine, a plurality of creasing and scoring devices some of which are carried by one of said bars and others of which are carried by another of said bars, and rotary shafts disposed parallel to said bars respectively and provided with means cooperating with said devices.

2. A creasing andscoring machine including two parallel units through which the stock is passed successively to score and crease the same along parallel lines, each of said units including a bar mounted in a fixed position in the machine and a rotary shaft disposed parallel to said bar, creasing and scoring devices separately mounted on said bars and suitably distributed between the bars of the two units, said shafts having means to cooperate with said devices respectively, and a gauge movable into juxtaposition with the bars of the several units for collocating the creasing and scoring devices on the respec tive bars.

3. A creasing and scoring machine including two parallel units through which the stock is passed successively to score and crease the same along parallel lines, each of said units including a bar mounted in a. fixed position in the machine and a rotary shaft disposed parallel to said bar, creasing and scoring devices separately mountedon said bars and suitably distributed between the bars of the two units, said shafts having means-to cooperate with said devices respectively, and a gauge movable into juxtaposition with the bars of the several units for collocating the creasing and scoring devices on the respective bars, said gauge comprising a slidably mounted bar and a scale hinged to said bar.

at. A creasing and scoring machine including two parallel units through which the stock is passed successively to score and crease the same along parallel lines, each of said units in cluding a bar mounted in the machine to turn about a fixed axis and a rotary shaft disposed parallel to said bar, creasing and scoring devices separately mounted on said bars eccentric to the axes thereof and suitably distributed between the bars of the two units, said shafts having means to cooperate with said devices respectively, and said bars being invertible upon their axes to bring said devices into cooperative relationship with said shafts or into positions remote therefrom wherein they may be conveniently adjusted on said bars, and a gauge movable into juxtaposition with the devices on the bars of the several units when said bars are in the latter positions for collocating the devices on the respective bars.

In testimony whereof we aflix our signatures.

JOHN T. ROBINSON. GEORGE E. GOODING.

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