US1804661A - Corrugating machine - Google Patents

Description

May 12, 1931. J. WAGNER CORRUGATING MACHINE Filed June 1s. 1929 NVENTOR maf QBMI Y--M ATTORNEY@ Patented May 12, 1931 UNITED STATES- PATENT OFFICE JOSHUA WAGNEIQOF BROOKLYN, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

TION F NEW YORK CORRUGATTNG MACHINE Application tiled June 18,

'8 1927, wherein the corrugations run o liquely across the sides of the box. Blanks for boxes of the above type can be more economically made from corrugated paper board having the oblique corrugations above referred to, than from corrugated paper board having the transverse corrugations which are produced by machines of the types now in use.`

The formation of oblique corrugations, however, presents certain diiiiculties, particularly in maintaining a continuous feeding of the web in the direction of its length and at the same time avoiding tearing of the sheet during the operation `offorming' the oblique corrugations. The present in- 'vention aims to avoid the above and other difficulties in such manner as to enable the machine to form oblique corrugations without injury to the sheet andv at practical speeds. Further objects and advantages of the invention will be in part obvious and in part specifically pointed out in the description hereinafter contained which, taken in conjunction with the accompanying drawings, discloses a preferred embodiment of the invention; such embodiment, however, is to be considered merely as illustrative of its principles. In the drawings- -Fig. 1 1s a plan view with certain -parts cut away of al corrugating machine constructed in. accordance with the invention.

Fig. 2 is a side View with certain parts cut away of the machine shown in Fig. 1.

The invention is illustrated as applied to a corrugatin machine wherein the paper web 1 to be o liquely corrugated is fed continuously in a lengthwise direction, between a pair of mating corrugated dies which are provided with corrugations running obliquely to the path of travel of the sheet, which dies successively engage along obliqe'lines 1929. Serial No. 371,909.

extendin all the way across the sheet, and thereby orm the entire length of each corrugation simultaneously, and form the complete corrugations successively. vWith this mode of operation the contraction of the paper web or` sheet, which necessarily occurs when the corrugations are formed, takes place in a lengthwise direction, avoiding any transverse contraction suiiicient to place undue strains o n the sheet as itxpasses between the dies.

In the illustrated form of the invention, one set of corrugated dies is carried by an endless conveyor made `up of chain-links 2 which lpass around sprocket wheels 3, which latter are supported on suitable frames 4. As shown the oblique corrugations are formed in fiat die members 5 mounted on alternate chain-links 2, and the upper flight of the conveyor runs over a pair of gulde rails 6, which serve to hold the corresponding dies in plane and abutting relation. As shown the chain-links 2 are provided with ,rollers 7 which run along the guide rails 6.

The remaining die member is shown in the form of a roller 8 mountedobliquely` above the traveling conveyor, and having longitudinal corrugations adapted to mesh successively with the corrugations of die members 5, when the conveyor travels forwardly and the roller 8 rotates about its oblique axisparallel to the corrugations of the conveyor. Preferably the roller 8 is provided .with bearings 9 of the thrust type at its opposite ends. y

In the operation of the machine the paper web 1 to be obliquely corrugated, will be fed along 4with the traveling conveyor until the sheet passes under the roller 8, when the oblique corrugations will be successively formed in the sheet, each corrugation being NEW YORK,'N. Y., A CORPORA- Y simultaneously formed along its entire f length as above referred to, and the contraction of the sheet during the corrugating operation taking place in a lengthwise direction as above, referred to.

The roller 8 in the illustrated form of the invention is not positively driven, but derives its motion by meshing with the corrugations of the traveling conveyor, as above described. A suitable ilumber of stripper fingers l0, operatin in grooves l1 in roller 8, may be employed to separate the corrugated sheet from the roller,'these stripper fingersbeing shown as mounted upon a bar, 12 extending across the machine in back of roller 8. v.

If desired, stripping members 13 may also be employed to separate the .corrugated sheet from the lower die, operating in conjunction with grooves 14 in such die.

' It will be understood that the web 1, after being corrugated, will usually have one or more facings applied thereto, to make single or double faced corrugated paper board, but

as means already known to the art may be employed for the above purpose, I do not deem4^ it necessary to describe the same herein. y

While a specific embodiment has been described it should be understood .that many changes may be made therein without departing from its principles` as set forth in 'the appended claims.-

I claim:

l. A machine for obliquely corrugating sheet material, having a corrugated traveling conveyor wherein the corrugations run oblique to its path of travel, a corrugating A roller having llongitudinal corrugations, said roller being rotatable about an axis parallel to the irst mentioned corrugations.

2. A machine lfor obliquely corrugating sheet material, having a corrugated traveling conveyor wherein the corrugations run oblique to its path of travel, and a corrugating roller having corrugatio'ns adapted to mesh with the conveyor corrugations and *4-0 thereby obliquely corrugate a sheet traveling with said conveyor.

3. A vmachine for obliquely corrugating sheet *material, having means 'for continuously feeding 'a sheet in a lengthwise direction, and including corrugating members on opposite sides of the path of travel of the sheetn which have complementary corrugations each extending obliquely across the path of travelof the sheet and adapted to engage successively substantially all the way across the sheet, thereby to form diagonal corrugations successively in the sheet and contract the latter in a lengthwise directionV as the corrugations are formed.

4. A machine for obliquely corrugating sheet material, having a corrugated traveling. conveyor wherein the corrugations run oblique to its path of travel, and a corrugating roller having corrugations adapted to mesh with the conveyor corrugations and thereby obliquely corrugate a sheet traveling with said conveyor, said conveyor being of the endless type and having a plurality of flat dies carrying its first mentioned corrugations and adapted to abut when in operating position.

with the conveyor corrugations and thereb .y

obliquely corrugate a sheet traveling wit said conveyor, said conveyor being of the endless type and having a plurality of fiat dies carrying its first mentioned corrugations and adapted to abut when in operating position, and a guide member enga-ging the operating flight of said conveyor adapted to maintain the corresponding dies 1n plane and abutting relation. 6. A machine for obliquely corrugating sheet material having a pair of corrugated dies, one of saidv dies being in the form of a roller Vrotating on an axis oblique to the path of travel of the sheet to be corrugated, andthe corrugations running lengthwise of said roller, and the remaining die being also corrugated obliquely with respect to the path of travel of the sheet and being adapted to engage tangentially with successive corrugations of the roller as the latter rotates. x

7. A machine for obliquely corrugating sheet material having-a pair of corrugated dies, one of said dies being inthe form of a roller rotating on an axis oblique to the path of travel of the sheet to be corrugated, and the corrugations running lengthwise of said roller, and the remaining die being also corrugated obliquely with respeotto'the path of travel of the sheet and being adapted to engage tangentially with successive corrugations of the roller as the latter rotates, said remaining die moving in the direction of travel of the sheet.

In testimony whereof I have signed my name to this specification.

JOSHUA .WAGNER

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