US2329890A - Machine for cutting rhombic sections from sheet piles - Google Patents

Description

Sept. 21, 1943. t w. R. FISHER 2,329,890

MACHINE FOR CUTTING RHOMBIC SECTIONS FROM SHEET FILES Filed Jan. 1 5, 1943 3 Sheet s Sheet 1 .F IIE. 1.

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flN T ATTOM I I I l I I Patented Sept. 21, 1943 h paszasof E QR-cUTTmG RHOMBIC 'SEC- I TIQNSFROM sn inrrnlns y i l William,R. :Arlington, .li assignor to .Re'ynol'dsMetals 00., Richmond, Va., a corporation of Delaware Application Januar 13, 1943, serial N9 ,182 I I 1 y; 8 Claims. fsg) n .eThis invention relates to new" and useful improvements in' sheet cutting machines of the guillotine class wherein substantially thick piles of rectangular printed sheets are cut into a pludue to .thevertical cutting action of the dies. To.

prevent resulting distortionof she-etsand .the tendency to draw out of cutting, register, each of these sheet" piles; must be bound together.

Again the top sheet of each pile is" treated with a lubricant to lubricatethe cutting'edge ofthe die. This sheet of componentlabels is. also wasted.

, By means of the invention rhombic labels may I Figure 7.

be printed on sheetsv of any .d siredsize and in successive rowsso that at the end of each row only asmall triangular unprinted and waste section. is proved. 'I'hese sheetsare.,pile d and the rows areseparated by' cutting into, row piles or printed strips having the small triangular waste sections at their ends. The row-piles arethen turned angularly tothe said initial lines of cut, in such manner that the triangular waste areas assume ladder'formationlso that a single guillotine cut'through the row-piles at each end 7 will remove all of the triangular was'te section s: at that end. .The, row-piles, 'afterlremovafof the waste at one end; may be. moved forwardly by steps each followed by abutting action sepa rating individual 'piles of "completelycut labels Such action employs three primary elements mounted'on the bed "o'f ithe' cutting machine, namelyy an auxiliary' back wall having sliding motion on a back gauge which moves toward the knife, an'adjustable side gauge which controls the endwise movements of the slidable' auxiliary back wall, and yielding sections carried by both the side gauge and the auxiliary back wall.

The invention will be described with reference tothe accompanying drawings, in" which Figurel is a front elevation" showing a cutting machine with myimpr'ovements carriedfthereby. "Figure 2 is a rear view 'ofsaid embodiment, and in elevation; ff

Figure 3" is' an enlarged fragmentary; new showing in plan the forward portion of'the machine bed with astack consisting ofjpiledi'label strips in position-for an'initial cuttin'gfaction at the forward ends thereof.

Figure 4 is a view similar to Figure 3'showing the position of the parts aftersuccessive cutting actions have been performed. 4 Figure 5 is a fragmentary view in. elevation. taken at the line 55, Figure 3with thestaclc clamping barv raised. r '1 -Figure 6 is a view similar 7 stack clamp down and in clamping position.

Figure 7 is a vertical section taken on the line, l 1, Figure 3 and through the bed and side. gauge and partially throughthe auxiliary back wall, illustrating a construction of the latter in which it is spring-yielding and hence is adapted to move under thepile clamp inthe final cutting movement of the knife, thatis tosay, prior-to, said final cutting movement. I :1, 1; Figure 8 is a vertical sectionpn the line 8 8,

Fig. 9 is a diagrammatic showing illustrating thegupper portion of one of th'ekfin'ished sheets,- prior: to its severance into rows. I N 1 I 1 Referring to the drawings, it will he undere stood that the improvements may apply to-any;

suitable design of cutting machine of the guil-jj lotine type, zand that the knife-operating and pile-advancingmechanisms of the machine indicated in the drawings are only generally shown and are not illustrated in detail; because they, form'no part ofjthe present invention. The ma chine indicated comprises a supporting base l, a bed 2, upwardly-rising knife guides 3 and a guillotine knife'd. Power is derived from a motor 5, a pulley 6 on-the motor shaft receiving a'belt 1 which rotates the main drive shaft 8 through-1,

position when raised as in Figure 1.

Referring to Figures 2 to 4 inclusive, it will be seen that the bed 2 carries a usual type of forwardly and backwardly moving back gauge 13 which in practice is power-advanced andretracted by motion imparted to push-and-pullrod I4. The auxiliary back wall I,

Slidablymounted on the forward faceof the back. gauge I3 is an auxiliary back wallhaving two relatively movable sections, the front section being shown at [5 and the rear section :at I531. The rear section consists of aplat'e having a furl to Figure 5 with the" H, which springs normally hold plate 15 upwardly in the position shown in Figure '7.

It will be seen from the above that the auxiliary back wall is mounted to slide longitudinally of the back gauge and that it moves forwardly At one end the aux bodily with the back gauge. iliary back wall has pivoted thereto at l8 an arm 19 which is slotted to receive a stud shaft 26 carrying a roller 2!, the shaft being held in 'ad-' justed position by a nut 22 on its threaded end. Also, a roller 23 may be mounted on the pivot Stlld at 18.

a The adjustable sid ga e The rollers H, 23 contact with the opposite labels is produced, that set constituting as many stacks as there are rows. In the descent of the pile clamp the forward end of'the side gauge is compressed, as earlier explained, and the rise of the pile clamp will restore the said compressible end-of the side gauge to initial position.

In the step-by-step forward movement of the back gauge, the auxiliary back wall is given successive'endwise movement through the engagement of rollers'2l and 23 with the side gauge.

Itwill be noted that only one side gauge is necessary, because the side gauge illustrated is so positioned that the downward and endwise motion of the knife is directed toward it, and the; mutual contactof the pile rows is sufficient to hold the rows inxpcsitionyaided by: the action g'iiidefaces of an adjustable side gauge 2 which I is 'fixed in its adjusted position on the bed 2. Within a longitudinal slot in the side gauge lies a pivot stud 25 carried by the bed, and pivoted to the side gauge at 261: is a slotted arm 26, the shank of a wing nut 21 which passes through the slot and is threaded in the bed ,2, holding the side gauge in adjusted position.

. "The compressible end of-the side gauge;

Figure 5. When the power clamp 28 movesdownward and to theposi-tion of Figure 6; the

side gauge compressible and member 29:1: moves downwardly, and when the pile clamp ra-isesmember 290: moves upwardly with the released pile to-maintain full guidingeifect.

The native Of printed sheets which are out i pile formation Figure 9, diagrammatically illustrates, the up.- per portion of one of the finished sheets priorto its severance into rows, with each row constitutine a p r l y of unsevered. labelsof rhombic design. The individual labels are indicatedi'at 5.11

and the triangular end wastesections at 32. The;

first step is to out a pile of the label sheets into rows, the lines of out being indicated; at 3.3. These rows are then laid upon the bed and, with reference to Figure 3, are swung over into the angular position shown in that figure, whereupon the lines 34 between the labels of each row will be brought end-.to-end and in straight-line parallelism throughout the rows, the lines of parallelism being synchronous with the knife.

The back gauge is then moved forwardly adis tance su'fficie'nt to bring the forward waste end portion of the assembled rows into cutting registry with the knife, whereupon the pile c1amp;l28 is brought down, followed bycorresponding movement of the knife, and the small triangular waste endsare removedfrom all of the -pile.rows by a single motion ofthe knife. i

This is the clamp which of the side gauge in restraining the tendency of the rows to shift. In all cases, however, the pile clamp is the D myj '0W1hD1ding and restraining .elementduring action of the knife.

When all ofthe labds' have been out there will still remain triangular projections at one end ofthe final set'of labels, and in the severance of such projections, they, alone, must be held by the pile clamp. For that'reason, my improvements enable the auxiliary back wall to move under the pile .clampiand afford: an adequate back, stop. As'earlier explained, such action is? made possible by forming the auxiliary back wall into a rigid holding section and an outermost :yielding section, the latter moving downward when the pressure of the clamp is applied, 1 By means ofthe invention, expensive die-cutting iseliminated and production is greatly increased, the means employed being relatively simple in form and-of relatively low cost.

Having-described my invention, what I claim.

and" desire to secure byl etters'latent, is as follows:

1-. In sheetcuttinggfnachines of the guillotine.-

class, and in combination with a cutting. bed, a pile clamp, a reciprocatory cutting knife and means for operating the samefoi a backgau e.

anauxiliary back. wall carried, by and movable longitudinally of the back gauge, a side gauge. and means intermediate the auxiliary back wall and-the side gauge foreffecting endwise movement of the auxiliary. back wall upon. bodily movement of the back gauge toward the kniia.

21in sheetcutting machines of the guillotine classg arrd in combination with a cutting bed, a

pile clamp,'a reciprocat'ory cutting knife and.

class, ndiin. ombination with. a cutting bed, a

pileolamp, agreciprocatory cutting knife and meansfon operating the. same, of a backrgaus, an auxiliary back'wall slidable relatively to the back gauge, a side gauge adjustable upon the ed. to vain'ous anguluar positions. relatively to the. knife, and. contact. means 1 carried by the auxiliarylback-wall land engaging the side gauze whereby during movementsof-the auxiliary back.

gauge and consisting of upper and lower springwall toward the knife said wall is shifted endwise.

4. In sheet cutting means of the guillotine class and in combination with a cutting bed, a pile clamp, a reciprocatory cutting knifeand means for operating the same, of a member movclass, and in combination with a cutting bed, a

pile clamp, a reciprocatory cutting knife and means for operating the same, of a member movable on the bed toward the knife and adapted to engage pile rows of printed sheets to be cut, means for moving said member toward the knife,

a side gauge adjustable upon the bed to various angular position relatively to the knife, and rollers carried by said pile-engaging member and engaging opposite faces of the side gauge;

6. In sheet cutting machines of the guillotine class, and in combination with a cutting bed, a pile clamp, a reciprocatory cutting knife and means for operating the same, of a back gauge, an auxiliary back wall slidable upon the back separated sections, whereby the auxiliary-back wall is compressible, a side gauge adapted to be held upon the bed in various angular positions relatively to'the knife, and means for shifting the auxiliary back wall endwise in movements of the back gauge toward the knife.

'7. A sheet cutting machine of the guillotine class constructed in accordance With claim 5,

in which the side gauge at its end section nearest the knife is formed with a compressible section member, and spring means engaging said com-' pressible member.

8. In sheet cutting machines of the guillotine class, and in combination with a cutting bed, a pile clamp, a reciprocatory 'cfutting knife and means for operating the same,of a back gauge, w

an auxiliary back wall having a longitudinal slot, means passing through the slot and car-. ried by, theback gauge for holding the, back wall on the back gauge for sliding movement, a side gauge adjustable upon the bed to various angular positions relatively to the knife, rollers carried by the auxiliary back wall and engaging the side gauge, and power means for'moving the 1 back gauge toward the knife whereby the aux iliary back wall is acted upon by the side gauge and is given endwise movement.

WILLIAM R. FISHER. v

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