US2902000A

US2902000A - Glue head for corrugated board box folding machine

Info

Publication number: US2902000A
Application number: US633475A
Authority: US
Inventors: Connolly Francis Allen
Original assignee: S&S Corrugated Paper Machinery Co Inc
Current assignee: S&S Corrugated Paper Machinery Co Inc
Priority date: 1957-01-10
Filing date: 1957-01-10
Publication date: 1959-09-01
Anticipated expiration: 1976-09-01

Description

Sept. 1, 1959 F. A. CONNOLLY GLUE HEAD FOR CORRUGATED BOARD BOX FOLDING MACHINE Filed Jan. 10, 1957 5 Sheets-Sheet l Sept. 1, 1959 F. A. CONNOLLY 2,902,000

GLUE HEAD FOR CORRUGATED BOARD BOX FOLDING MACHINE Filed Jan. 10, 1957 I 3 Sheets-Sheet 2 Se t. 1, 19-59 I F. A. CONNOLLY 2,902,000

GLUE HEAD FOR CORRUGATED BOARD BOX FOLDING MACHINE 5 Sheets-Sheet 3 Filed Jan. 10, 1957 GLUE HEAD FOR CORRUGATED BOARD BOX FOLDING MACHINE Francis Allen Connolly, Astoria, N.Y., assignor to S & S Corrugated Paper Machinery Company, Inc., Brooklyn, N.Y., a corporation of New York Application January 10, 1957, Serial No. 633,475

4 Claims. (Cl. 118-200) This invention relates to corrugated board box folding machines and more particularly to gluing devices for spreading glue on the flaps of boxes.

It is an object of the invention to provide a simple and elfective means of selectively spreading glue on either the upper or lower surfaces of flaps as they enter the machine.

Another object of the invention is to provide a glue head for spreading glue on selected flaps while at the same time protecting other flaps from being soiled by the gluespreading process.

It is an additional object of the invention to provide a glue head which may be readily applied to a standard corrugated board box folding machine in an oriented position for selective glue-spreading on flaps.

Briefly, the invention comprises a pair of glue rollers each having its respective housing. Each combination of a glue roller and housing constitutes an integral unit wherein they are mates in the sense of being mirror images of each other. Thus, one unit can be substituted for the other unit, depending upon whether it is desired to spread glue on a surface below the roller or above the roller. In each instance, the housing for the roller surface has a guard to prevent other surfaces from becoming glue contaminated while a box flap is passing in contiguity with a roller.

A detailed description of the invention will now be States Patent given in conjunction with the appended drawings in which:

Figure 1 shows an elevation of a fragment of a corrugated board box folding and gluing machine wherein the invention is incorporated.

Figure 2 shows a magnified portion of the machine shown in Figure 1, wherein the one glue roller unit is shown in position for spreading glue on a flap passing below the roller.

Figure 2a is similar to Figure 2 except that the mating unit has been substituted for spreading glue on a flap passing above the roller.

Figure 3 is a section through 3--3 of Figure 2.

Figure 4 is a perspective of a bracket arm bolted to the machine which serves to hold either of the roller Figure 5 is a perspective of one of the roller units devised for spreading glue on flaps passing below the roller.

Figure 6 is a section through 66 of Figure 5.

Figure 7 is the mating roller unit devised for spreading glue on a flap passing above the roller.

Figure 8 is a diagrammatic cross-section showing the relative position of the roller and the housing guard'when spreading glue on a flap passing thereabove.

Figure 9 is a diagrammatic illustration similar to Figure 8 but showing the orientation of the flap and the mating roller unit for spreading glue on a flap passing therebelow.

Referring to Figure l, a box folding and gluing machine 10 is disclosed in its basic components wherein the location of the invention with respect to surrounding parts is indicated at 15. Thus, the roller housing 20 and roller Patented Sept. 1, 1959 ice 24 as a unit will be seen to be secured to an adjustment and pressure mechanism 30 and disposed above a delivery belt 34 and a pressure roller 38. An additional pressure roller 42 of standard construction is provided which acts in conjunction with the other mating unit to be hereinafter disclosed.

The pressure roller 38 acts in conjunction with the glue roller unit as shown in position on Figure 1, all in a manner which will be understood to persons skilled in the art. Thus, whichever of the roller units is used, either for spreading glue below the roller or above the roller, a pressure roller is provided to hold the folded over flaps of the carton against the glue charged roller of the roller unit. Referring now to Figure 2, the particular roller unit as illustrated in Figure 1 is shown to an enlarged scale wherein it will be clearly seen that the roller 24 is exposed for contact with flaps passing therebelow and wherein the mode of attachment of the roller unit as by means of bolt 46 and locating

pins

50 and 52. A keeper arm 126 is provided which closes the exterior face of the roller unit in a manner to be hereinafter disclosed in detail and supports the outboard end of the roller unit.

In Figure 2a the mating roller unit having housing guard 20 and the roller 24' is illustrated, which roller acts in conjunction with the pressure roller 42 as hereinabove explained. Thus, it will be apparent by comparing Figures 2 and 2a and more particularly from consideration of Figures 5 and 7 that the roller units are mirror images of each other and consist of a housing which serves as a glue chamber as well as a guard in which the roller is fully protected and wherein only the exposed portion of the roller as shown in Figure 6 emerges for operation on passing flaps. The rollers are mounted on

respective shafts

60 and 60 which have bearing support in the ends of the respective housing. Each shaft is connectable with a flexible rotary shaft 64 as shown in Figure 3 when the roller unit is installed.

It will be apparent that, since the

rollers

24 and 24 must rotate in opposite directions, means is provided for producing reversible rotation of the flexible shaft 64. This will be understood to be accomplished at the input end (not shown) of the flexible shaft to either of two sources of rotary power turning in opposite directions.

As seen in Figure 3, each roller is carried on its respective shaft and is fastened thereto as by a set screw68. The shaft '60 is slotted at 72 to take a tongue 76 of the flexible shaft 64, the same expedient being understood to be utilized for shaft 60'.

One end of each housing is provided with

ports

80 and 84 as shown in Figure 6 which connect with

respective glue ducts

88 and 92, as shown in the mounting bracket 93 of Figure 4. The outer face of each roller unit is provided with a pair of locating

pins

50 and 52 as shown in Figure 2, the pins being designated by primed reference characters in Figure 7. Respective threaded bores and 100 are provided for accommodating a fastening bolt to be hereinafter described.

It will thus be seen from consideration of Figures 5 and 7 that the roller units constitute what may be termed a left and a right, or an upper and a lower, and that each consists simply of an integral casting, for example of bronze, suitably bored to provide bearing supports for a shaft which supports the respective roller. The locating pins may be simple studs force-fitted into bores provided in the face of the casting. Further details of the construction will be apparent to persons skilled in the art and no further description thereof is deemed necessary here.

Referring to Figure 4, an exploded perspective is shown of the mounting bracket 93 which will be seen to have a body comprising a bore and a support arm 114. The body is further bored to take

glue ducts

88 and 92 which emerge to coact with the

ducts

80 and 84 so that when the

shaft

60 or 60 is thrust into bearing support position in bore 110 the duct ends line up and slide readily into

bores

80 and 84. In order that there should not be an excess of glue in the reservoir that could flow out, the diameter of inlet 88 should be less than and preferably about half that of 92. Moreover, outlet 92 should be above the bottom of housing guard roll -20.

Standard 118 is integral with the support bracket and is provided with bolt holes such as 120 for fastening to the machine. Suitable locating pins such as 122 may be provided. Either roller unit is kept in position rigidly by means of the keeper 126 having a pair of

bores

128 and 130 into which slide the

pins

96 and 98, or the pins 96 and 98', which hold the respective roller unit in proper alignment with the keeper element. A through bore 134 is provided through which a bolt 46 may pass for coacting with the threaded

bores

100 or 100 of the housing guards. The end of the arm 114 is provided with a threaded bore 140 to coact with a fastening bolt 144 passing through a through-bore 146 in the keeper element whereby that element, supporting the outboard end of a roller unit, is securely fastened to the arm 114 and thus to the machine.

It will be understood that the

glue ducts

92 and 98 are connected with a circulating source of glue in a manner heretofore known. Thus, each of the housing guards forms a glue chamber whereby the respective roller is constantly immersed as to a portion of its surface in glue for spreading on a flap surface passing above the roller as shown in Figure 8 or below the roller as shown in Figure 9. It will be apparent from comparison of Figures 8 and 9 that regardless of which roller unit is in use, the guard housing protects the opposite flap of the carton from becoming glue contaminated. Thus, in Figure 8 the guard housing 20 is intermediate the dry flap and the roller, while in Figure 9 the guard housing 20 is intermediate the dry flap and roller.

The particular shape of the housing guards, by virtue of being tapered and rounded as shown, permits smooth sliding of the carton surfaces therepast without any abrupt changes in configuration which might otherwise cause snagging. It will be further noted that the keeper has a peripheral bevelled edge 150 which blends into the bevelled edges of either of the housing guards so that a smooth and continuous outline is preserved. Thus, as viewed in Figure 3 the bevelled edge of the keeper 126 is shown in a smooth continuous line with the bevelled edge of the housing guard 20, the same being true of housing 20'.

Having thus described my invention I am aware that various changes may be made without departing from the spirit thereof and accordingly I do not seek to be limited to the precise illustration herein given except as set forth in the appended claims.

I claim:

1. A glue applying device for a carton folding and gluing machine, comprising a roller unit, including a roller and a housing surrounding said roller wherein said roller is exposed for a predetermined portion of its periphery, means for selectively interchanging said roller unit with another roller unit also including a housing and a roller secured thereto, said housings being mirror images of means for securing said units to a machine comprising a bracket having a pair of glue flow passages therethrough, said roller units each having a pair of glue flow ports in the respective housing thereof registerable in said passages, and means for clamping either of said units to said bracket.

2. A glue applying device for a carton folding and gluing machine, comprising a roller unit, including a roller and a housing surrounding said roller wherein said roller is exposed for a predetermined portion of its periphery, said portion comprising less than half of the circular length of said periphery, said housings being mirror images of each other whereby one unit roller is operative to contact boxes passing therebelow and the other unit roller is operative to contact boxes passing thereabove, in cluding a support bracket for securing either of said roller units to a machine, said support bracket comprising a yoke for straddling either of said housings and means for securing a housing to said yoke, said bracket having a bore, each roller having a rotary shaft extending therefrom through a wall of said housing and being disposable in said bore for bearing support therein, said bracket having glue flow means extending therethrough, each of said roller unit housings having glue flow means registerable with said bracket glue flow means.

3. A glue applying device for a carton folding and gluing machine, comprising a roller unit, including a roller and a housing surrounding said roller wherein said roller is exposed for a predetermined portion of its periphery, means for selectively interchanging said roller unit with another roller unit also including a housing and a roller secured thereto, said housings being mirror images of each other whereby one unit roller is operative to contact boxes passing therebelow and the other unit roller is operative to contact boxes passing thereabove, including a support bracket for securing either of said roller units to a machine, said support bracket comprising a yoke for straddling either of said housings and means for securing a housing to said yoke, said bracket having a pair of parallel bores for glue flow, each of said housings having a pair of glue flow bores registerable with respective glue flow bores of said bracket.

4. A glue applying device for a carton folding and gluing machine, comprising a roller unit, including a roller and a housing surrounding said roller wherein said roller is exposed for a predetermined portion of its periphery, means for selectively interchanging said roller unit with another roller unit also including a housing and a roller secured thereto, said housings being mirror images of each other whereby one unit roller is operative to contact boxes passing therebelow and the other unit roller is operative to contact boxes passing thereabove, including a support bracket for securing either of said roller units to a machine, said support bracket comprising a yoke for straddling either of said housings and means for securing a housing to said yoke, said bracket having a bore, each roller having a rotary shaft extending therefrom and being disposable in said bore for hearing support therein; said bracket having a pair of parallel bores for glue flow, each of said housings having a pair of glue flow bores registerable with respective glue fiow bores of said bracket.

References Cited in the file of this patent UNITED STATES PATENTS 913,008 Herr Feb. 23, 1909 1,094,139 Forte Apr. 24, 1914 2,787,244 Hickin Apr. 2, 1957