US1864632A - Machine for making paper boxes or the like - Google Patents

Description

June 28 1932.

s. BERGSTEIN MACHINE FOR MAKING PAPER BOXES OR THE LIKE Filed Oct. 11, 1928 5 Sheets-Sheet 1 INVENTQR" 'ATT'oRNs v June 28, 1932. s BERG$TE|N 1,864,632

MACHINE FOR MAKTNG PAPER BOXES 0R THELIKE 3 Filed Oct. 11, 1928 5 Sheets-Shet 2 l')Q 1% x [76 7 Q lb June 28, 1932. I 5 BER$TE|N 1,864,632"

MACHINE FOR MAKING PAPERBOXES OR THE LIKE Filed Oct. 11, 1928 5 Sheets-Sheet s 5. BERGSTEIN MACHINE FOR MAKING PAPER BOXES OR THE LIKE- June 28, 1932.

5 Sh-eet s-Sheet 4 Filed Oct. 11, 1928" INVENTQR June 28, 1932. 5, s m

' MACHINE FOR MAKING PAPER BOXES OR THE LIKE 5 Sheets-Sheet 5 Filed Oct. 11. 1928 A TTOR Y Patented June 28, 1932 UNITED, STATES PATENT OFFICE SAMUEL BERGSTEIN, OF MIDDLETOWN, OHIO, ASSIGNOB TO THE INTERSTATE FOLDING IBOX- COMPANY, OF MIDDLETOWN, OHIO MACHINE FOR MAKING PAPER BOXES OR THE LIKE Application filed October 11, 1928. Serial No. 311,859.

fore the boxes are formed, the covered open ings serving for displaying the contents of sealed boxes.

g The practice heretofore in manufacturing such articles, having particular reference to paper boxes, has been to apply the transpar- 16 ent material to the box board by hand methods, involving hand gluing and hand assembling of the two materials, at time and labor cost too high to permit of using the boxes for many products for which they would be desirable.

In the machine herein set forth mechanism for forming the boxes is combined with mechanism for applying the transparent material to the box blanks, in a coordinated machine and process of manufacturing, the

movement of the material through the operations of joining the two materials together and for forming the boxes being continuous, or without pause, which makes .possible the relatively large output of the machine."

The objects attained in the invention consist in forming the boxes by means of one or more female die members and a rotatable series of male die members for each female die member which coact one with another for forming the boxes progressively, and in gluing the boxes as formed bypressure devices which coact with the male die members, the box blanks being moved to the dies, prefer- I ably by automatic feeding mechanism, in the intervals between successive operating relations of the male and female die members. The invention adapts itself readily to the manufacture of paper boxes from paper blanks prepared in advance with adhesive,

for forming the joints, or, from blanks to which the adhesive is applied incidental to feeding of the blanks to the box forming dies.

For certain forms of boxes special features of the dies are used, such special features in one form being shown and described herein for illustrative purposes, the principle of the invention being adaptable for producing a wide range of boxes of conventional and special forms.

In the drawings:

Fig. 1 is a-detail view in side elevation of the box making machine; I

Fig. 2 is a view in cross section of the machine online 22 of Fig. 1; r

Fig. 3 is a view in cross section of the machine on line 33 of Fig. 1.

Fig. 4 is a view illustratingthe box forming mechanism in side elevation;

Fig. 5 is a plan view of the mechanism illustrated in Fig. 4;

Figs. 6-7 are plan and end'views respectively of the female die member;

Figs. 8-9 are detail views in end and side elevations respectively of one of the male die members in a modified form;

Figs. 10-11 are views of box blanks for boxes of different forms suitable for production on the machine as herein shown and described;

Fig. 12 is a view of a half section of a box made from the blank shown in Fig. 11.

The means employed for practicing the improvements as herein shown and described consist in combining with a well known type of box blank feeding mechanism, means for' assembling adhesively two different kinds of material for the box blanks and in forming the boxes on the same machine the operationsof combining the two unlike materials and forming and gluing the boxes being in a continuous sequence. The construction and operation of the box blank feeding mechanism being well known in the art, only such parts of the mechanism that are directly associated with the improvements applied thereto are shown in the drawings and herein described.

The box material as illustrated in Figs. 10-. 11 consists ofbox blanks cut and scored for.

assembling; also the material may be 'preared in advance with adhesive for assemling the box board and the transparent material and for forming and sealing the boxes,

per the adhesive may be applied to the box blanks on themachine. For box stock prepared in advance with adhesive means are provided on the machine for moistening the adhesive, and for stock not prepared in advance with adhesive, means are provided-on the machine for applying adhesive to the box blanks before the two materials are brought together.

In Fig. 1 the box blanks 101 are shown as arranged for feeding the blanks singly to the machine, common forms of box blanks being illustrated in Figs. 1011. Thetransparent material 103, as here shown is wound in a continuous strip on a roll, the portion required for each box blank being drawn 0ft theroll and severed from the sheet incidental to the operation of assembling one material with the other.

The feeding mechanism for the box blanks, as illustrated in Fig. 1, is of well known construction and, accordingly, is shown more or less conventionally. The structure shown consists of afeed roller 104 mounted on ashaft 108 and provided with afriction pad 105 for engaging the outer sheet of box material and moving the same between the roller and a belt 106 traversing a pulley 107opposite roller 104.

Any suitable gluing or moistening device may be arranged onshaft 108 for rendering the-box material adhesive, accordingly as the paper stock is or is not prepared with adhesive. Such devices are well known in the art and do not require a detail showing in their relation to the improvements herein set forth. A glue moistener is shown conventionally in Fig. 1 in its relation to thefeed roller 104. The essential parts of the moistener consist in a container 109 for water and rollers 110111 for conveying moisture toroller 104 onshaft 108 which acts to transfer the moisture to the box blankprepared with adhesive for assembling the two materials.

As the paper blanks pass from thefeed roller 104 the same are held frictionally in engagement with belt 106 by a series of pressure rolls 113, traversed by a belt 112,the

forward edge of each blank being moved into engagement with the lower end of adependmg arm 114 which is pivoted on a, bracket 115 fixed on arod 116 extended longitudinally of the machine. As thearm 114 is actuated successively by the blanks. the movement is transmitted through thepivot shaft 117, andarm 118 secured to the pivot shaft, alink 119 and anarm 120to ashaft 121 which extends parallel withrod 116 and has limited rotatable movement; fromshaft 121 the movement is further transmitted through anarm 122 to a vertically extended,springtensioned bolt 123. the lower end of the bolt and thespring 124 for normally holding the bolt in raised position being supported in ahousing 125. The upper end of the bolt is the roller being operably connected with alower feed roller 133 mounted on ashaft 134 bygears 135. The upper feed roller shaft is connected to the paper blankfeed roller shaft 108 by a chain and sprocket connection 136137138,sprocket 138 being free rotatably and slidably onshaft 131, the driving connection between the sprocket and the shaft consisting in a friction clutch of well known construction comprising as here shown thedisc 130 which is secured to. the shaft, afiber disc 139 interposed between a disc 140 formed integrally withsprocket 138, and aspring 141 arranged telescopically of the shaft and acting to exert pressure on the sprocket for effecting the friction drive between the sprocket and the shaft.

Whenlever 114 is moved upward by the forward edge of a paper blank,bolt 123 will be forced downward against the resistance ofspring 124, and pawl 128 will be moved out of engagement withdisc 130; the feed .of the strip of the portion fed forward at each operation being moved into engagement with the-adhesive'portion of a paper blank by a second. feeding mechanism consisting of aninclined guide 142 and a friction belt 143 traversing pulleys 144-145 and coacting withguide 142 for moving the strip of material therebetween, the friction belt being driven by a chain and sprocket connection 146147148, an idler roller 149 acting to keep the belt taut. A herring bone brush 150 is lightly tensioned in any suitable manner against the strip of Cellophane for smoothing the surface of the strip before it passes between the feed rollers.

Feed rollers 132-133 are of the required diameter for feeding the Cellophane strip forward to the extent required for presenting an end portion upon each feeding action sufiicient to cover the adhesive portion of the paper blank. As the end of the strip contacts with the adhesive on the blank both materials move together in superposed relation under pressure devices which act to e fect firm adhesion therebetween.

Partial severingof the strip material is effected by perforators 153154 on feed ration after the forward end of the strip has been joined adhesively to the paper blank. The'feedrollers 13 133 are so timed with feed roller 104- that the end of the strip ma- -terial will be protruding from the lower end ofguide 142, as indicated at 155,, upon arrival of each paper blank at that point. As the length of the strip material applied to each blank is determined by the diameter of the feed rollers 132133, it will be seen that the portion so applied can be made to approximate closely in size and general outline the portion of the paper blank it is to cover.

As the forward edge of the paper blank advances beyond the lower 'end of'the fric-.tion feed guide 142 it moves under apressure roller 156 which during the movement of the forward edge of the blank thereunder is in raised position above the plane of move ment of the blank. As the blank is further advanced the forward edge engages adepending.arm 158 and moves the arm upward I in the same manner as the upward movement ofarm 114.Lever 158 serves for controlling the operation of acam 157 through an'interconnecting mechanism consisting of abracket 159 onrod 116, ashaft 160 supported in the, bracket to which the lever is pivotally connected, anarm 161, link 162 andarm 163 connectingshaft 160 with shaft 121a. which is axially aligned withshaft 121. From shaft 121a the movement is transmitted through an arm 164 to a spring-tensionedbolt 165,- comprising a spring 166, latch fin-.

ger 167 tensioned by aspring 168 for actuating a pawl 169 which coactswith a shoulder 170 of a disc 171 which is mounted on the same shaft withcam 158. The cam shaft is driven with a chain and sprocket connection.

138a172173, sprocket 138a being formed integrally withsprocket 138. The driving connection between sprocket 172 and the cam shaft 174 consists of a friction clutch comprising aspring 175 for moving the sprocket axially on the shaft, a disc 176 secured to the shaft and afriction disc 177 interposed between the sprocket and disc 176.Parts 158 to 177 inclusive are substantially the same in construction and operation asparts 114 to 139 inclusive herein described in greater detail. I

When the cam shaft 174 is released upon actuation oflever 158, the cam 157will be actuated one turn through; the connection 138a-172173, operation of the cam acting to forceroller 156 against the superposed sheets ofmaterial 101 and 103, as the same are moved by the blank carrier belt 106 there under, with therequired pressure for effecting firm adhesion between the sheets. The

, connection between the cam and the pre supported for lateral adjustment transverse-' 1y of the machine, the cam shaft 174 being splined for the purpose and thearm 158 provided with any suitable means as a set screw for securing the same onrod 160. Thus'the machine as a whole is readily adaptable, by shifting the position of the pressure mechanism and by interchanging feed rollers of different diameters for the Cellophane material, for applying the material in any predetermined size of'the applied sheet over a corresponding portion of the paper blank.

As illustrated in Figs. 4-5, the box forming mechanism is shown in a double unit for a duplex machine, the location of the female ,die members being indicated at A in fixed relation on the frame, the male die members B being supported in fixed relation in series onrotatable actuators 2, being equally spaced one from another inthe plane of rotation of the actuators to re 'stersuccessively with the female die mem ers, the operat: ing connection for the actuators as here shown, consisting in ashaft 3, bevel gears 4 and a shaft 5 upon which the actuators are mounted.Shaft 3 is part of the box blankknown construction except for some minor.

adaptations of the mechanism to theoperatj 7 ing re uirements of the novel box forming dies. or combining the operation of the forming dies with thefeeding mechanism shaft 3 is extended by a suitable coupling for making the driving connection to shaft 5.

The female die members A as best shown in Figs. 6-7 consist in open, rectangular shaped diehousings 12, supported upon the upper faces of which are a series ofcoactin plates 13, 13a and 14, the plates being pivoted on shafts 1516 and tensioned upward by springs 17-18 which act to return the plates to their normal horizontal position after each box forming operation.Plates 13 and 13a are substantially aboveplates 14 and have upwardly extendedflanges 19 which act to effect certain folds of the boxblanks as the same are formed in the dies. The diehousing 12 and plates 13a are split at 20 for providing clearance for the supportingshanks 21 of the formingheads 22 of t mal'e die members B, to permit the ma members to pass through the female memsure rollers.

bers incidental to the box forming operations.

The box blanks illustrated in Figs. 10-11 are for conventional forms of boxes. The blank shown in Fig. 10 is suitable for production on the forming dies as illustrated in Figs. 4, 6 and 7 and the blank shown in Fig.

11 for production on the dies illustrated in Figs. 67 and 8-9, the machine otherwise, as here shown, being adaptable for producing boxes from either form of blanks.

As a box is formedby the coaction of male and -female die members, they are passed through the female die folded over the male die, moving thus into engagement with opposite series ofpressure rollers 23 supported in oppositecurved frames 24, tensioned by opposingsprings 24a which act, by exerting pressure on the adjacent faces of the boxes, being the faces upon which the joints of the boxes are formed, to effect adhesion of the folded portions along the joints. The pressure on the boxes is sustained the required interval of time for the glue to set before the boxes pass out of engagement with the pres- The pressure rollers are supported axially substantially on radii of the centerof. rotation of themale die support 2, the movement of the boxes in the forming operation being substantially at right angles to the axis of rotation of the rollers. The pressure rollers for the forms of boxes here shown are preferably rubber covered which provides yielding surface contact'with the boxes and ismore effective for producing uniform sealing of the joints.

Adjacent the end of each series ofpressure rollers 23 is a brush25 rotatable on ashaft 26 also on a radius of the center of thesupport 2. The brushes are operated by a shaft andgear connection 27, 2829 and act to remove the boxes from the male die members by frictional engagement therewith, the boxes falling upon a conveyor of any suitable construction, shown conventionally,at

30, for removing them from the zone of operation of the machine.

The modified construction of the box forming die illustrated in Figs. 8-9 consists of the female die member A, a detail of which is shown in dotted outline, and the male die members 136 one of which is shown. Part -A is the same as the corresponding part illustrated and described in connection with Flgs. 4-7. Parts Bb are composed of-two sections 22a22b which are spaced one from the other transversely of the die head, the lower part 22a being supported by means of opposite vertical stems 22c slidable in part 22b for providing relative movement axially of the stems between the parts which are held in their normally spaced relation by a.compression spring 22d intermediate stems 220.

Spring 22d is of the required power for sustaining parts 22a22b in their normally spaced relation during the initial box forming operation in the female die A, the resistance of the spring being overcome upon engagement of part 22a with thepressure rollers 23, thus causing relative movement to be effected between parts 22w-22b for presenting solid side faces of the box forming head opposed to the pressure rollers for forming the adhesivejoints. Upon movement of the male die members beyond the zone of the pressure rollers, spring 22d acts to restore parts 22a22b to normal relation.

The modified construction above described is suitable for boxes illustrated in Figs. 11- 12, which differ from boxes made from blanks illustrated in Fig. 10 by the added inner end sealing flaps e, both forms of the boxes illustrated in Figs. 1041-12 being of a common type.

Incidental to the movement of the box blanks illustrated in Fig. 11 through the blank feeding mechanism C, flaps -e are turned upward at an angle to the body of the blanks which are delivered over the female die with flaps e partially folded as indicated in Fig. 8. The means provided in the blank feeding mechanism for effecting the partial fold of flaps e, consist in opposite fixed guides 31 of the usual construction which engage the flaps as the blanks are moved forward and turn them up. In the box forming operation, as illustrated in Fig. 8 the upper male diemembers 22?) act to complete the fold of the flaps before the boxes move between thepressure rollers 23.

It will be apparent from the drawings and the foregoing detailed description that boxes generally suitable for forming by reciprocating dies will also be suitable for forming by the progressive dies AB comprised in my invention, the production capacity of the progressive dies being relatively much greater.

While pressure means are employed for sealing the boxes after the same pass from the female die, it will be apparent that certain forms of boxes, having particular reference to light weight boxes, can be sealed by the coaction of the male and female dies. The added pressure devices will be more effective, however, for manufacturing the general run of boxes.

As far as I am aware, my invention as herein set forth is the first of its kind to embody the features of assembling the different box materials, namely, the transparencies and the paper board, and for forming the boxes in a coordinated machine and process of man ufacturing.

I claim as my. invention:

1. A paper box making machine including a female die, a series of male die'members movable progressively into operable relation with the female die for forming the boxes, feeding means for moving the box blanks to the female die, including means for rendering the blanks adhesive and for effecting an initial fold on the blanks, and pressure means ooacting with the male die members for sealing the boxes, each of the .male die members comprising a divided box forming head spaced one part from another for adapting the dies to said fold of the box blanks in the forming operation of the boxes, and movable one part relative to another for reducing the said space therebetween for sealing the boxes.

2. A paper box making machine including a female die, a series of male die members movable progressively into operable relation with the female die for forming the boxes, feeding means for moving the box blanks to the female die, including means for rendering the blanks adhesive and for effecting an in- I itial fold on the blanks, and pressure means coacting with the male die members for sealing the boxes, each of the male die members comprising a divided box forming head,

spaced and spri'ng-tensioned one part relative to. another for adapting the dies to said fold of the box blanks in the forming operation of the boxes, and movable one part relative to another for reducing the said space therebetween for sealing the boxes.

3. A paper box making machine including a female die, a series of male die members movable progressively into operable relation with the female die for forming the boxes, feeding means for moving the box blanks to the female die, includingmeans for rendering the blanks adhesive and for effecting an initial fold on the blanks, and pressure means coacting with the male die members for sealing the boxes, each of the male die members comprising a divided box forming head spaced and spring-tensioned unyieldably one part relative to another for adapting the dies to said fold of the box blanks in the forming operation of the boxes, and yieldable one part relative to another upon engagement thereof with the said pressure means for sealing the boxes.

In testimony whereof I aflix my signature.

' SAMUEL BERGSTEIN.

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