US2083351A - Manufacture of corrugated paper cartons - Google Patents

Description

June 8, 1937- M. H. SIDEBOTHAM MANUFACTURE OF CORRUGATED PAPER CARTONS Filed Jul 29, 1935 ATTORNEY .Patented June 8, 1937 UNITED STATES PATENT OFFICE MANUFACTURE or CORRUGATED PAPER CABTONS Melvin n. Sidebotham,

signor to Specialty A pany, Medford, Mass West Newton, Mass, astomatic Machine .Com- .a corporation Application July 29, 1935, Serial No. 33,624 16 Claims. (CI. 93-49) cured tape, or wire stitching or other known methods.

Heretofore, so far as I am aware, the common practice in eflecting the production of such cartons has been to cut blanks to the required size, then put said blanks through a slotting and scoring-machine, after that, the slotted and scored blanks are folded by hand or, in rare instances,

folded and taped by a machine.

Machines of a prior type which fold on scored blanks have not been a commercial success because of the difliculty in registering the folding mechanism to the previously made scores in the blanks. The stifi nature of the blanks and in the case of corrugated blanks their structural formation opposes bending which results in the edges of fillile blanks, when folded, being out of straight One of the objects of my present invention is to efiect rapid production of paper cartons by a sequence of operations, comprising the feeding of a paper blank to a can-ier, printing the 'blank, slotting, scoring, folding and then taping the abutting edges of the folded blank.

- Another object of my invention is to produce a machine that will eflect rapid production of paper cartons by a sequence of operations, in which the folding is effected by starting the folding operation while the mechanism for longitudinal scoring is in contact with the blank, thus assuring proper alignment of the abutting edges of the folded blank. I

Another object of my invention is to provide a machine of the above type in which fiber blanks may be fed in rapid succession and which will perform automatically all operations necessary to produce a complete carton in flat condition.

. While the invention includes the combined instrumentalities above mentioned, I wish it to be understood that I consider the aforesaid means not only combinatively novel, but insofar as I am aware, certain of the devices going to make up such means are new in less combinations than the whole and some capable of individual use, as will more clearly appear hereinafter.

Other more specific objects and advantages of the invention will be apparent to persons skilled in the art as the same becomes better understood 7 by reference to the following description, taken in connection with the accompanying drawing, in

which I have illustrated one practical embodiment of the invention, and wherein:

Figures 1 is a. right-hand side elevation of the machine. 5

Figure 2 is a plan view of the machine.

Figure 3 represents a section on line 3-3 of Figure 1 showing the starting position ofmechanism which completes the folding of the blank.

Figure 4 represents a section on line 44 of 10 Figurel showing the longitudinal scoring and slotting knives in contact with the paper blank and, also, showing .the completion of the first folding operation.

Figures 5, 6, 7, 8, and 9 show the condition of 15' the blank as successive operations are performed to complete the box in fiat condition.

Figure 5 shows the blank after the transverse scoring operation. I Figure 6 shows the blank after the longitudinal 20 scoring and slotting operation.

Figure 7 shows the blank after the first'folding operation is completed, said folding operation a being performed while the longitudinal scoring means is in contact with the blank. 25

Figure 8 shows the blank after the completion of the second folding operation. Figure 9 shows the completed box after the taping operation.

Similar numerals refer to the similar throughout the several views.

- Referring first to Figures -1 and 2, the different parts or members of the machine are mounted on suitable sideframes'l and 2 connected by crossbars 3 and 4, which constitute the framework of 35 the machine. Y Mounted in' sideframes i and 2 is a power shaft 5 which is caused to rotate by any suitable power means not necessary to describe.

The conveyor belts 6 and! are driven-by the 40 parts 30 I action of rolls 8, 9 and lll'which are driven at practically uniform peripheral speed, from power shaft 5, by gearing not necessary to illustrate.

In the operation of the machine a paper blank H is fed from supply stack I2 to the conveyor 45 belts 6 and! by means of feeding roll l3 which is driven from power shaft 5 by gearing not necessary to illustrate. The paper blank II is carried .by conveyor belts 6 and l' which pass between rolls I 4 and I5 supported by sideframes l and 2, 50

the lower lol1 l5 being of any known type to effect printing, usually at predetermined intervals, on the lower surfaceof the blank ll. The next unit comprises an oven I 6 supported by sideframe's I and 2, said oven. when in use 55 5 printing is being effected.

The next unit comprises means for transversely scoring the blank H as shown in Figure 5. The transverse scoring knives i1 and I8 are fastened to scoring head 19 which is caused to move up by sideframes l and 2. The lower ends of arms 20 and 2| are connected by link 22 with crank on shaft 25 which is caused to Operate by means of pulley or sprocket 24 which is mounted on shaft 25, said pulley or sprocket 24 is connected by a belt or chain 28 with pulley or sprocket 21 which is mounted on shaft 28. Fixed on shaft 28 is a pulley or sprocket 38 which is caused to rotate by means of belt or driven by pulley or sprocket 58 mounted on power shaft 5.

The next unit comprises means for slotting,

scoring and folding. The slotting and scoring knives 3i, 32 and 33 are fastened to heads 34, 35 and 3B which are caused to move up and down by arms 31 and 38 which are supported by sideframes I and 2. The lower ends of arms 31 and 3a are connected by links as and 40 to cranks 4| and 42 which are caused to operate by rotation of shaft 28. The lower end of arms 31 and 38 are connected by the ends of levers 43 and 44 mounted on shaft 45 which supports levers '46 and 41 which act through links 48 and 49 to produce a rocking action to shafts 58 and 5|. Folder arms 52 and 53 mounted at the ends of shafts 50 and 5| are so mounted and shaped as to bend the two edge sections of blank H upwardly to about 90 degrees from the horizontal plane. This folding operation is done while the heads 34 and and 35 are in their lowest position and while the scoring knives are in contact with the blank H.

The partly folded ,blank II is carried by conveyor belts 6 and 1 to a position between folding arms 54 and 55 which act on the partly folded blank to complete the folds by bending the two edges of the blank towards each other so that when this operation is completed the edges of blank I l are in abutted condition.

The blank I l is carried from the slotting, scoring and folding unit, by conveyor belts 8 and 1 to a taping unit 58. which applies a strip of tape '51 to the abutting edges of folded blank Having now described my invention, 1 claim:

1. The method of making paper cartons by a sequence of operations consisting of feeding a paper blank to a carrier, printing the blank, rapidly drying the printing, transversally scoring the blank, longitudinally slotting and scoring the blank in one operation, partly folding the side portions of the blank while the longitudinally scoring means is in contact with the blank, folding thesaid side portions of the blank towards each other until the edges of said side portions are in abutting position; applying a section of adhesively treated tape to the abutted edges of the blank.

2. The method of making paper cartons by a sequence of operations consisting of printing a blank, rapidly drying the printing, longitudinally slotting and scoring the blank in one operation, partly folding the side portions of the blank while the longitudinally scoring means isin contact with the blank, folding the said side portions of chain 29 which is 7 portions of the the blank towards each other until the edges of said side portions are in abutting position, applying a section of adhesively treated tape to the abutted edges of the blank.

3. The method of making paper cartons by a sequence of operations consisting'of feeding a paper blank to a carrier, longitudinally slotting and scoring the blank in one operation, partly folding the side portions of the blank while the o and down by arms 20 and 2| which are supported eration, partly folding the blank while the scoring means is in contact with the blank, folding the side portions of the blank towards each other until the edges of said side portions are in abutting position, applying a section of adhesively treated tape to the abutted edges of the blank.

5. The method of making paper cartons by a sequence of operations consisting of feeding a paper blank to a carrier, printing the blank, simultaneously scoring and slotting the blank, partly folding the side portions of the blank while the scoring means is in contact with the blank, folding the said side portions of the blank towards each other. until the edges of said blank are in abutting position, applying a section of adhesively treated tape to the abutted edges of the blank. I

6. The method of making paper cartons by a sequence of operations consisting-of printing a paper blank, simultaneously scoring and slotting and partly folding the side portions of the blank wards each other until the edges of said blank are in abutting position, applying a section of adhesively treated tape to the abutted edges of the blank.

7. The method of making paper cartons by a sequence of operations consisting in feeding a paper blank to a carrier, printing the blank, scoring and slotting the blank while partly folding the side portions thereof, folding said side portions of the blank to abutting position, applying a section of adhesively treated tape to the abutted edges of the blank.

8. Apparatus of the class described comprising means for causing blanks to travel, means for printing the blanks, heating means to dry the printing, means, to transversally score each blank, reciprocally acting blank scoring and slotting means, blank folding arms co-acting with the scoring means to partly perform the folding operation while the scoring knives are in contact with the blank, mechanism to fold the side blank towards each other until the edges of the blank are in abutting position, means to apply a section of adhesively treated tape to the abutted edges of the blank.

9. A machine for making paper cartons from blanks comprising means for printing the blanks and heating means to dry the printing, means to transversally score each blank, blank scoring and slotting knives mounted in a reciprocally acting platen, blank folding arms co-acting with the scoring meanst-o partly perform the folding operation while the Scoring knives are in contact with the blank, mechanism to fold the side portions of thcblank towards each other until the one operation, blank folding arms co-acting with the scoring means to partly perform the folding 10 operation while the scoring knives are in contact with each blank, mechanism to fold the side portions of the blank towards each other until the edges of the blank are in abutting position, means to apply a section of adhesivly treated 15 tape to the abutted edges of the blank.

11. A machine for making paper cartons from blanks comprising means for prlnting'each blank, means for simultaneously scoring and slotting the blank, folding means co-acting with the scor- 20 ing means to partly perform the folding operation while the scoring knives are in contact with the blank, mechanism to fold the side portions of the blank towards each other until the edges of the blanks are in abutting position, means to 5 apply a section of adhesively treated tape to the abutted edges of the blank.

12. A machine for making paper cartons fromblanks comprising means for-causing blanks to travel, blank scoring and slotting knives mounted 30 in a reciprocally acting platen, blank folding arms co-acting with the scoring means to partly perform the folding operation while the scoring knives are in contact with each blank, mecha- 1 nism to fold the side'portions of the blank to- 35 wards each other until the edges of the blank are side portions of the blank in abutting position, means to apply a section oi.

- 'adhesively treated tape to the abutted edges of the blank.

13. Apparatus of the class described comprising means for simultaneously slotting and scoring each blank, blank folding arms co-acting f with the scoring .means to partly perform the folding operation while the scoring knives are in contact with the blank, mechanism to fold the tion, means to apply .a' section of adhesively treated tape'to the abutted edges of the blank.

1 14. Apparatus of the class described compris ing reciprocally acting means for scoring blanks, means co-acting with said scoring means to begin folding operations on the blanks while the scoring. means is in contact with the blanks, folding arms to bend the side portions ofthe blanks towards each other until the side portions of the blanks are in abutted position.

Y 15. Apparatus of the class described comprising reciprocating scoring knives acting in lines perpendicular to the material to be folded, means co-acting with said scoring means to fold the blank while the scoring means is in contact with .the material.

towards each otheruntil the edges of the blank are in abutting posi- 16. Apparatus of the class described compri'sing reciprocally acting slotting and scoring knives; means co-acting with said scoring knives to begin folding operations on the material while the scoring knives are in contact with the material.

, v MELVIN H. SIDE'BOTHAM.

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