US2587273A

US2587273A - Machine for making corrugated paperboard

Info

Publication number: US2587273A
Application number: US42466A
Authority: US
Inventors: Aquilla John
Original assignee: EAGLE NAT PRINTING AND DIE CUT
Current assignee: EAGLE NAT PRINTING AND DIE CUT; EAGLE NATIONAL PRINTING AND DIE CUTTING CORP
Priority date: 1948-08-04
Filing date: 1948-08-04
Publication date: 1952-02-26
Anticipated expiration: 1969-02-26

Description

Feb. 26, 1952 J. AQUILLA MACHINE FOR MAKING CORRUGATED PAPERBOARD 2 SHEETSSHEET 1 Filed Aug. 4, 1948 a n ma w V fl fl .1 n c k 0 1.9m V. B

Feb. 26, 1952 J. AQUILLA MACHINE FOR MAKING CORRUGATED PAPERBOARD.

2 SHEETS-SHEET 2 Filed Aug. 4, 1948 IN VEN TOR. flgmilla/ HTTUIFNE 7 Patented Feb. 26, 1 952 MACHINE FOR. MAKING CORRUGATED PAPERBOARD John Aquilla, Brooklyn, N. Y., assignor to- Eagle National Printing and Die Cutting Corp., New York, N. Y., a... corporation of New York Application August 4, 194j8, ,S erial'No..42,466

(Cl. 154F531):

3 Claims. 1

The present invention relates to machines for producing laminated products and refers particularly to machines for corrugating paper'and applying facings thereto to produce corrugated aper. board and the'like.

Accordingly, an object of the present inven-- tion is to provide an improved machine of the foregoing type which, is. relatively simple in construction and which is economical to manufacture.

Another object, is to provide such a machine having improved means for applying the corrugations.

Still another object is to provide such corrugating means which are readily heated at a low cost.

Yet another object is to provide improved means for applying the facings to the corrugated paper without crushing the same.

A further object is to provide an improved arrangment for centering the corrugated paper and facings in order to avoid a slitting operation.

Still a further object is to provide a drive for the facing applying means and an independent drive for the corrugating means whereby paper is continuously passed through the heated corrugating means, independently of the operation of the facing applying means and overheating of the corrugated paper is prevented.

Other and further objects will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims, andvarious advantages not referred to herein will occur to, one skilled in the,

a t up plo en of they inv tion i practice.

A preferred embodiment of the inventionhas been chosen for purposes of illustration and description and is shown in the accompanying drawing, forming a part of the specification, wherein:

Figure 1 is a plan view of a machine for making corrugated paper board in accordance with Figure 5' isan enlarged sectional view taken along the line 5-5 on Figure 1, illustrating details of the facing applying means.

Referring to the drawings in detail, and more particularly to Figures 1 and 2 thereof, there is shown a machine comprising aframe H) for rotatably supporting a supply roll- H of paper to be corrugated, a supply roll- IZ of paper adapted to provide the upper facing of'the finished product and a supply roll M of paper adapted to pro vide the lower facing of the finished product; corrugating means generally indicated by the reference numeral 15; and facing applying means generally indicated by the reference numeral Hi.

The corrugating means I 5 comprises a receptacle I] for containing liquid, such as water or a suitable wetting agent, a transfer roll 19 having its lower side submerged in the liquid and supporting the paper to be corrugated to thereby apply liquid to the paper and moisten thesame, a pair of heated corrugating rolls20- about to be described in detail, and drive means including a motor 2i for effecting rotation of the corrugating rolls 20.

AS illustrated in Figures 3 and 4, the corrugating rolls 20 each comprise a hollow tubular member 22 journalled for rotation in bearings 24, a serrated exterior 2.5" between the bearings- 24, and a cylindrical interior open at its ends. A sprocket 25 is secured to one end of one of the rolls. 2]! for receiving a chain 2'! driven by a sprocket 29 rotated by the motor 2|, and a gear 30 is secured to the. other end of the r011 20 which meshes with a similar gear 30 on the other roll*'20 to effect rotation thereof.

"The serrations 25 of the rolls 20 are constructed and; arranged to mesh and serveas feed rolls for unrol'l'ing the paper from the supply roll H while forming the corrugations therein.

Preferably, the rolls 20 are heated to provide for better setting of the corrugations formed in the paper, the formation of which is facilitated by moistening the same. This is conveniently accomplished by a gas burnercomprising a tube 31" in coaxial relation with the roll 20 and having; perforations 32 therein between the bearings 24' for directing flame jets against the interiorof the roll adjacent the corrugating serrations. Qne end of each of the tubes 3| is capped at 34- and the other endis connected to a gas supply line 35 having a control valve 36 therein (Fi ure-2): The openends of the rolls 20 provide for'the supply of air to attain proper'combustion ofgaseous fuel.

The facing applyingmeans wcomprisesla pairacsze'rsi of

receptacles

31 and 39 for containing an adhesive substance in liquid form each having a transfer roll 40 partially submerged therein for respectively applying the adhesive to the underside of the upper facing and to the underside of the corrugated paper; and means for passing the facings and corrugated paper therebetween to cause the facings to be adhered to the intermediate corrugated paper as about to be described.

These last mentioned means are illustrated in Figure and comprise a pair of spaced apart upper rollers 4|, an endless belt or apron 42 extending about the rollers 4|, a pair of spaced apart lower rollers 44, and an endless belt or apron 45 extending about the rollers 44, which are adapted to cooperate with an adjacent strand of the belt 42 to feed the corrugated paperboard therebetween. Each of the rollers 4| is adjacent one of the rollers 44 but is ofiset in the direction of travel of the

belts

42 and 45, for example, the rollers 4| may be somewhat in advance of the rollers 44. The rollers 4| and 44 are further spaced to provide a greater distance between the belts at adjacent rollers than at portions intermediate the rollers to thereby eliminate nips between rollers 4| and 44 tending to crush or otherwise deform the corrugations. As will be noted, the

belts

42 and 45 serve to unroll the facings from the supply rolls l2 and I4 while the corrugated paper is drawn over an idler 46 (Figure 2) and fed between the facings. While so drawn between the belts, light, but sufficient pressure is applied by the adjacent belt strands at portions intermediate their rollers to cause the face ings to be adhered to the intermediate corrugated paper without crushing of the latter.

In order to efiect rotation of the

belts

42 and 45, a sprocket 41 is secured to one end of one of the rollers 44 for receiving a chain 49 driven by a sprocket 50 rotated by a motor 5|, and a gear 52 is secured to the other end of the aforementioned roller which meshes with a similar gear 52 on the roller 4| adjacent this roller 44.

If desired, the other rollers 4| and 44 may be mounted on the frame forlengthwise movement by slidable supports 54 secured in predetermined positions on a slide 55 by bolts 56 to thereby adjust the tension of the

belts

42 and 45.

From the foregoing description it will be noted that the corrugating and facing applying means are operatedby independent drive means, whereby.--the facing applying means may be shut down temporarily without stopping the corrugating means. Should such conditionbe established, the corrugating means continues to operate and the vpaper will not be overheated or scorched due to stoppage between the heated rolls 20. The paper which has been corrugated is merely permitted to be deposited at a point between the rolls and the idler 46 and such accumulation of.-excess corrugated paper is used up at the end of a run when the supply on the roll II is exhausted.

K Heretofore, it has been found necessary, insofar as applicant is aware, to slit the side edges of the facings after the assembly of the facings and corrugation into a composite or laminated form in order to provide a balanced arrangement. This slitting operation is required in the prior art arrangement in view of the fact that the supply rollers thereof are provided with a braking or resistive effort, thereby pretensioning the papers. In applicants arrangement, as explained hereinbefore, the corrugation and facings, as well as the supply rollers |2,- and M, are in a.loose 4 state, so that the papers can be readily guided laterally and, accordingly centered.

Referring again to Figs. 1 and 2, there are shown lateral guides 60 of any suitable configuration, such as Z shaped brackets each having a base 6|, a. vertical upright 62 and a bentover portion 63, which guides are adapted to be secured to the receptacle 31 in any well known manner for the upper facing. A similar guide 64, mounted on the receptacle 39, is provided for the corrugation while guides or flanges 65, provided on a freely rotatable shaft 66, guide the lower facing. With the three guides 60, 64, and 65 disposed in predetermined alignment it will be readily understood that the corrugation will be guided substantially midway between the edges of the facings, thereby eliminating the slitting operation.

It will be seen that the present invention provides an improved machine for making corrugated paper board which embodies novel features of construction resulting in improved operation and the production of a better product.

As various changes may be made in the form, construction and arrangement of the parts herein, without departing from the spirit and scope of the'invention and without sacrificing any of its advantages, it is to be understood that all matters herein are to be interpreted as illustrative and not in any limiting sense.

I claim:

1. In a machine for making corrugated paper board, the combination of a pair of rollers, an endless belt extending about said rollers, a second pair of rollers, and an endless belt extending about said second pair of rollers constructed and arranged to cooperate with said first belt to feed corrugated paper board therebetween, said belts bein'g supported only by their respective rollers, both of said rollers of said first pair being respectively adjacent both of said rollers of-said second pair and being oifsetin the direction of travel of said belts to provide a greater distance between said belts at adjacent rollers than between said belts at portions intermediate their respective rollers to thereby eliminate nips at adjacent rollers tending to crush the corrugated paper board, the axes of said rollers being so disposed that the bottom peripheral surfaces of said first pair of rollers fall below the top peripheral surfaces of said second pair of rollers and thereby impart a predetermined'pressure'to said paper board.

2. In a machine'for making corrugated paper board, the combination of a pair of lower rollers,

an endless belt extending about said rollers, a pair of upper rollers, and an endless belt extending about said rollers constructed and arranged to cooperate with said first belt to join at an entrance between said belts apair of facings to a cardboard sheet to form a corrugated paper board and to feed the corrugated paper board therebetween, said belts being supported only by their respective rollers, said upper rollers being each adjacent one of said lower rollers and being spaced forwardly with respect thereto to eliminate nips at adjacent rollers tending to crush the corrugated paper board, the axes of said rollers being so disposed that the bottom peripheral surfaces of said upper rollers fall below the top peripheral surfaces of said lower rollersv and thereby impart a predetermined pressure to said paper board. 3. In a machine for making laminated products, the combination of a pair of endwise ofi'set endless belts each having a strand thereof adjacent the other and adapted to contact same, means including a pair of rollers for each endless belt for moving said belts to cause said adjacent strands to move in the same direction, means for feeding a pair of separated sheets between said strands, means for feeding a third sheet between said pair of sheets, means including a Z-shaped bracket at each side of said sheets for guiding said three sheets in balanced, lateral alignment with respect to each other, means for applying adhesive to said third sheet and one of said pair of sheets prior to feeding said sheets to said belts, whereby said belts cause said sheets to be adhered while passing therethrough, the axes of each pair of said rollers being so disposed that the bottom peripheral surfaces of one of said pairs of rollers fall below the top peripheral surfaces of the other pair of rollers and thereby impart a predetermined pressure to said sheets and means for adjusting the contact pressure of said belts.

JOHN AQUILLA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 100,989 Deey Mar. 22, 1870 279,219 Brown June 12, 1883 293,239 Foley Feb. 12, 1884 782,516 Nicollet Feb. 14, 1905 891,428 Latus June 23, 1908 982,176 Dunfee Jan. 17, 1911 1,146,771 Barrel July 13, 1915 1,168,171 Crumbaugh Jan. 11, 1916 1,264,506 Hahn Apr. 30, 1918 1,629,511 Kramer May 24, 1927 1,719,947 Swift July 9, 1929 2,039,750 Swift May 5, 1936 2,073,780 Brooks Mar. 16, 1937 2,107,430 Swift Feb. 8, 1938 2,251,513 Cannard Aug. 5, 1941 2,335,190 Minich Nov. 23, 1943 2,373,500 Pearce Apr. 10, 1945 2,380,512 Forbes July 31, 1945