US1578854A - Combined press and waste-removing slitter - Google Patents

Description

March 30,1926.- 4 1,578,854

J.'W. SCHOENDELEN COMBINED {HESS AND WASTE RBIOVING SLITT BR 2 Sheets-Sheet 1 :NEENTOZ g 5 ATTORNEY- 65 A Q j March 30 1926. 1,578,854

' J. W. SCHOENDELEN IQ'OIIBINED rasss AND WASTE REMOVING su'rrsa 2 Sheets-Sheet 2 TOR.

{M w= ATTORNEY Filed Nov. 19, 1923 Patented Mar. 30, 1926.

JOSEPH PANY, on NEW YORK, N. 1 A CORPORATION orNEw ERSEY,

OMBINED rR ss AND WASTE-REMOVIN 81.1mm

Application filed Nov mber 19, 1923. seriai'No. $5,458. 1

To all whom/it may concern:

Be it known that I, J osnrrr W SoHo nELnN, a citizen of the United States, resid ing in Qgden, in the county of NVeber and State of Utah, have invented a new and useful Improvement in CombinedPresses and lVaste-Bemoving Slitters, of which'the following is a specification.

The present invention relates toma'chinery for cutting sheets of tin plate,,0r the like, ito'obt'ain pieces of; proper size and form for particular uses, such, for example, as the making of can-ends.

In order to obtain a maximum number of H A View thereof, belngtaken substantially along cuts from'a sheet; of given-size, it has become the practiceto cut circular pieces from the sheets in accordance with what is known as a stagger lay-out, i. e., by cutting the piecesin rows with the cuts of adjacent rows out of alignment. This obviously permits the. rows to be arranged closer together than would be possible withthe so-called straight cut, due to .the rounded lines of the cut.v

In order to thus minimize the wastage, particularly when relatively large disks are being cut, thejsheet must be quite large, so as to permit the staggered cuts, which, of course, would, be impossible with a narrow strip, such'as might'be used in straight cutting, or when relatively'small disks are desired. I i

first'made in the sheet and thereafter the side cuts are'made, this necessitatingconsiderable handling of said sheets before the full number of cuts are made; After the central cuts have been obtained, the sheet is very limber and extremely difficult to handle, it beingimpossible to automaticallypass' such a sheet through the feedingmechanism 'of the :press. Gonsequently,'it has been found necessary to positionjsaid sheet'for the later cuts .by, hand, or to transfer the sheet by handr'from the press and to sever it along a median line to produceseparate sheet por- 'tionswhich might be mechanically fed into the press. y

Thepurpose of the present inv'entionis to overcome the difliculties just described by automatically transferring the sheet from the press, after the central row of cuts has been made, and removing the flimsy scrap portions between the cuts of said central row, thus providing two rigid sheet portions which can be handled by the automatic feed- Cnstomarily, a central row'of cuts are.

ing devices'of thepr'esses While theremai'm ing cuts are being made.

Other objects and advantages of theinvention will be'apparent as it is'better understood froin the following description, which,

taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

Beferrmgto the drawings,

Figure 1 is afside elevation,partiallyin section I and largely diagrammatic,"of;a ina chine assembly constructed in accordance with my invention UNITED STATES PATENT o F E' -i W.3SGHO7ENDELEN, or OGDEN, UTAH, nssreNon'io AMERICAN CAN com- Fig.2 in a top plan and partially sectional I the broken line 22 in Fig.1;and

Fig. 3 is a plan'vie'w ofafsheetof tin plate such asis adapted to befacted upon by the mechanismof my I invention,- showing the staggered lay-out of the cuts. p

Considering said drawings in detail, it will be noted that a press frame 11 i's'fsupported from a base 12 and provides bearings at the top for a shaft 13, which'is driven I through the medium of a pulley ll'and 'has mounted thereon abrake' mechanism 15and a crosshead 16, which latter 'carriesan upper slide '17 in which ispositioneda punch 18.

A bed. plate 19 is supportedlf'rom' the I 7 frame and has secured to jtl' ei'up'pe'r side thereof a bolster plate 21 upon which s proper position for the first'c-ut to 'be taken therefrom, this position being determined by means .of a side guide 27 and a feeding block .28, there being several ofsaidblocks arranged along the lower'lengthzof the, table at such distance apart as the cutsoffa "row areto be spaced. i

The above described machine is or may be of the constructioirshown in my other application Serial No. 67 9,459 filed of'even date herewith.

After the proper number of cuts have been made in the central row, the sheet is delivfleeting plate 31 being provided at the lower end of the table 23 to cause said sheet to be properly positioned upon said conveyer which is inclined upwardly from the bottom of said table 23. The conveyer 29 is directed about a drum 32 mounted on a shaft 33, which has bearings 34 positioned upon the base members 12, and about adrum 35 on a shaft 36, which is hearing in a bed portion 37 of a slitting machine which is supported by a frame, generally indicated by the reference character 38. A supporting plate 39 extends beneath the conveyer 29 and connects said press and slit ting machine, the ends ofsaid plate resting upon brackets 41 and 42' provided respectively upon the two machines.

The conveyeris driven by means of a sprocket chain 43, taking over a sprocket mounted on the end of the shaft 36 and over a similar sprocket on a shaft 44, which has bearings 'atthe upper end of a table 45 of the slitting machine and carries a pulley 46 by which it is driven source of power.

A feeding roller 47 is mounted on an idle shaft 48 above the conveyer drum 35 and is rotated by the latter to hold the sheet 26 to theconveyer as it is directed therefrom onto the table'45 ofthe slitting machine.

Rotary slitter knives 49 and 51 are mounted respectively on the drive shaft 44' and an upper shaft 52, which is mounted above and in parallel'relationship to said shaft 44, said shafts being geared together by means of gears 53 and 54 mounted respectively thereon.

As the sheets are fed to said slitter knives, they pass between side guides 55 and 56,

the latter having on its inner side leaf springs 57 bearing against the edge of the sheet and holding it against the opposite guide 55. Retaining plates 58 and 59 are employed to prevent any upward displacement of the sheet from the table.

It will be noted that there are two each of the knives 49 and 51 and that these are spaced apart a sufiicient' distance to remove scrap portions 61 between the circular cuts 62, which, as noted before, are arranged in a row at the. center of the sheet. This produces two separate sheets 63 and 64, which are sufliciently rigid to be subsequently passed through the automatic feeding mech anism of the presses, with the result that the difficulty of handling a large sheet, rendered limber and unwieldy by the narrow connecting webs which constitute the waste portions 61, is eliminated.

from any suitable After the slitting operation, the sheet 'or sacrificing all of its material advantages the form 'hereinbefore described being 'merely a preferred embodiment thereoffl I claim v 1. The combinationof a press adapted to cut circular articles from metal sheets,

and sheet metal cutting means for cutting out scrap portions from the intermediate part of said sheets to make the separated" 7 parts of the sheets practicable for handling, and mechanism. operatlng said press and said cutting means in timed relation.-

2. The combination of a press for removing circular articlesfrom metal sheets 'so as to leave considerable areas ofmetal at either side of the median parts of the sheets, slitting devices arrangedat a distance from each other for cutting through the scrap portions of the sheet so as to removev small scrap and leave the separated side ,portlons of the sheet practicable for further handling, and mechanism operatmg said pressand'shtting devices 1n tnned relation.

3. fhe combination of a punch press for removing pieces of sheet metal from the median part of the sheet, slitting devices spaced apart from each other 'for'cutting out waste portions from the median part of the sheet to facilitate the subsequent handling of the separated side portions of the sheet, means fortransferring said sheets from the press and through'th'e slitting devices, and mechanism operating the'press,

the slitting devices, and the transferring means in timed relation.

4. The combination of a punch press adapted to remove pieces of metal from the central portion of a metal sheet and to thereby-leave waste portionsof metal connecting the two side portions of the sheet, slitting means for cutting out said remaining pieces of waste metal sov as toleave the side portions of the sheet practicable for further handling, a conveyor for transferring thesheets from said press to said slitting means, and mechanism operating said press and slitting means and conveyor in timed relation.

J OSEPH WV. SCHOENDELEN.

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