US1163863A - Machine for manufacture of paper boxes. - Google Patents

Description

E. SCHLEGEL.

MACHINE FOR MANUFACTURE OF PAPER BOXES,

APPLICATION FILED MAR.24. 1915.

Patented Dec. 14, 1915.

3 SHEETS-SHEET I.

WWW Maw W 4. 6 44 5% E. SCHLEGEL.

MACHINE FOR MANUFACTURE OF PAPER BOXES.

APPLICATION FILED MAR. 24; 1915.

1,163,853. Patented Dec. 14, 1915.

3 SHEETS-SHEET 2.

a, 4 as v 26w 0 Q 0 o I \--\57 E. SCHLEGEL.

MACHINE FOR MANUFACTURE OF PAPER BOXES.

Patented Dec. 14, 1915.

3 SHEETS-SHEET 3- APPLICATION FILED MAR. 24, I915.

vwautoaa vvbtmunao v I l W- 4. 6A gd 6mm COLVMXUA PIJNOGRAPN CO..WASH!NGTON. n. c

ERNEST SCI-ILEGEL, F CLEVELAND, OHIO.

MACHINE FOR MANUFACTURE OF PAPER BOXES.

Specification of Letters Patent.

Patented Dec. 14, 1915.

Application filed March 24, 1915. Serial No. 16,570.

To (ZZZ whom it may concern:

plunger head or former.

Be it known that I, ERNEST SCHLEGEL, a subject of the Emperor of Germany, residing at Cleveland. in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Machines for Manufacture of Paper Boxes, of which the following is a specification.

This invention relates tomachines for the manufacture of paper boxes, such as me cream boxes, oyster pails and the like, and especially to machines 'ofthe plunger and die type, in which a plunger or former operates on a previously cut blank, for the purpose of folding the same and gluing its flaps in proper position.

The object of the invention is to produce an improved machine of the type stated, as will more fully appearfrom the following description.

In the accompanying drawings, Figure 1 is aperspective of the machine. Fig.2 is a vertical section. Fig. 3 is a horizontal section showing the operating parts under the table top. Fig. 4 is a sectional view of the Figs. 5 to are details in side elevation of the various folders and their operating devices. Fig. 11 is a detail in vertical section of devices for withdrawing the boX after it is formed.

Referring specifically t0 the drawings, the box blankas shown comprises a bottom B, opposite sides C and F, end flaps D D and G G and bottom flaps E E, which flaps are folded to form a substantially rectangular box by the machine.

12 indicates the machine table or top, standing on legs 12 and having a transverse opening 12, and lateral slots 12 for folding rollers to be described.

The power shaft 14 is mounted in bearings 13 on two of the table legs. On the shaft is a cam 15 which operates on a roller 16 carried by a lever 17 which is fulcrumed on the fulcrum shaft or rod 18 supported by brackets 18 and the lever is connected by a link 19 to a lever 21 fulcrumed on a bracket 20 and having a counter-weight 21*. This lever is connected by a link 22 to a lever 24 which is fulcrumed at 23 on a standard 23 on the table top, and the lever is connected by links 25 to a plunger 26 which is guided by a spline 26 in a sleeve 23 on the stand ard. The lower end of the plunger has a former block or head 27 the shape of which corresponds to that of the box to be formed.

At the bottom of the former is an ejector plate 27 which is pressed from above by springs 27 coiled around the stems 27 of the ejector plate, and these stems work in recesses 27 in the head, the movement being limited by stop pins 27 which extend through slots 27 in the stems. The shaft 14 also carries a cam 28 working on a roller 29 carried by a lever30 which is fulcrumed on the rod 18 and which is connected by a link 31 to a block 32 located directly under the plunger. This block carries a pair of upwardlv proiecting fingers 33 which fold the flaps D of the box, and also a pair of spring fingers 34 which proiect upwardly and carry at their upper ends a pair of rollers 35 which fold the bottom flaps E of the box. A block 36 depends from the table top on which the bottom B of the box rests during the forming operation. This block guides the rollers 35 to the plunger vhead. The shaft 14 also carries a cam 37 which operates on a roller 38 carried by a lever 39 which is fulcrumed on the rod 18 and which is connected by a link 40 to a lever 41 which is fulcrumed on a bracket 42 depending from the table top and connected bv a link43 to a folding leaf or plate 44 which is pivoted at 45 to the table top at one side or back of the forming position. The shaft 14 also carries a cam 46 which operates on a roller 47 carried by a lever 48 which is fulcrumed on the rod 18 and which is connected by a link 49 to a swinging arm 50 which is fulcrumed at 51 and by a link 52 to an opposite folding leaf or plate 53 which is pivoted at 54 adjacent the opposite side of the forming position. 'The shaft 14 also carries a pair of cams 55 which operate on rollers 56 carried by a pair of levers 57 which are fulcrumed on the rod 18 and which are provided at their upper ends with rollers 58 which swing in the slots 12 in the table top and act to fold the flaps G of the box.

The shaft 14 carries a bevel gear 59 which meshes with a bevel gear 60 on a transverse shaft 62 mounted in bearings 61 on the frame, and this shaft 62 has thereona cam 63 which operates on a lever 64 which is fulcrumed to a bracket 65 on the floor. The upper end of this lever is pivotally connected to a projection 66 depending from a slide 67 working in guides 90, and on this slide is mounted a'slide plate 68 having a slot 68 into which projects a stop pin 72 on the slide 67. r The pin acts as a guide and stop for the slide 67 and prevents sidewise movement of said slide, the pin moving along in the slot. The plate 68 works under a strap (39 and has stop pins 70 and 71 which strike said strap at the limit of movement in either direction. The plate (37 has a screw stud 77 which forms the pivot of a pair of crossed arms 73 and 71 which have gripping fingers and 76 arranged at opposite sides of the opening 12 in position to grasp a box after it is formed and the plunger head 27 withdrawn therefrom. The fingers are opened and closed by a pin projecting from the slide (38 through holes in links 91 pivoted to the outer ends of the arms 73 and 74:, a slot 92 in the slide 67 providing room for the pin to work. Then the slide 67 is advanced it carries with it the plate 68 until the pin 71 strikes the strap 69 which by the means described acts to close the fingers 75 and 76 against the sides of the box, and the slide 67 is then retracted or removed outwardly, carrying with it the plate 68 until the pin 70 strikes the strap 69, as shown in Fig. 11, which acts to spread the arms, by means of the links 91, opening the fingers 75 and 76 and releasing the box which then drops through the opening 12 into the chute S3 in which the completed boxes are nested. The cam 63 advances the slide 67. It is retracted by a spring 82 which is connected to the slide and to a bracket 81 on the side of the frame. Spring 78, bearing against the arms 73 and 74, provides tension which is regulated by a nut 79 on the stud 77.

In operation, the box blank is placed on the table under the plunger. against pins 12 to properly position the same. The plunger then descends, the plate 27 pressing against the bottom B and the springs 27 being compressed. The cam 37 then acts to swing up the leaf 44 which folds the side C up against the head 27-. At or about the same time the cam 28 acts to lift the block 32 and the fingers 33 which fold the flaps D up and in against the ends of the head 27. The second rise of the cam 28 then continues the lift of the block 32 and the rollers 35 fold up the flaps E against the outer sides of the flaps D, as shown in Fig. 8. Then the cam 46 operates to lift the leaf 53 which folds up the flap F against the side of the head 27; and finally the cams 55 operate to swing up the levers '57 whose rollers 58 move up and across through the slots 12 and against the flaps G and fold said flaps inwardly over the'flaps D and E, thereby completing the box, It should be mentioned that the flaps D, E and G are all gummed before the blank is fed to the machine. After the box is so folded the cams permit reverse movement of the folding devices to the original position. Then the head 27 is lifted by the counterweight 21*, the plate 27*, in consequence of the springs 27 acting to release the box from the head so that the box will not be lifted as the plunger head withdraws. The completed box is thus left standing in position onthe table top, from which it is withdrawn as described above. That is, briefly stated, the fingers 75 and 76 are ad vanced and grip the box therebetween, and are then retracted and opened to drop the box through the opening l2 into the chute S3.

The invention is not limited to the exact mechanism shown, but may be modified in various ways within the scope of the invention.

What I claim as new is:

1. In a box making machine, the combination with a table having an opening therein, and box-forming mechanism adapted to form a box on said table, of box removing mechanism movable across the table between the box forming position and said opening, and adapted to remove a box from said position and drop the same through said opening.

2. In a box makingmachine, the combination with a table,andmeans to form a box thereon, including a vertically movable plunger, of laterally movable gripping devices having jaws movable across the table at opposite sides of the box and arranged to engage the box and withdraw the same laterally after the plunger lifts.

3. In a box making machine,the combination of a table, a vertically-movable form working toward and from the table, means to fold side flaps against said form, and

means to fold inner and outer end flaps upon said form; including a pair of swinging levers pivoted below the table top and swinging laterally across the ends of said form, pressure devices carried by said levers and arranged toengage and fold the outer end flaps. e

4:. In a box making machine, the combination of a table, a vertically-movable form working toward and from the table, means to fold side flaps against said form, and means to fold inner and outer end flaps upon said form; including a pair of swinging levers pivoted below the table top and swinging across the ends of said form, and rollers carried by said levers and arranged to fold and roll over the outer end flaps.

5. In a box making machine, the combination of a table having slots, a form movable vertically toward and from said table and adapted to press the bottom of a blank upon said table, means to fold side flaps against said form, a pair of vertically movable rollers, working through the table and adapted to fold inner end flaps against said form, a pair of swinging levers located below the table top, and rollers carried by the adapted to fold the outer end-flaps.

6. In a box making machine, the combination of a table having openings in the top thereof, a former movable vertically toward and from the table top, means to fold side flaps against said former, a vertically movable block located under the table top, fingers and spring supported rollers carried by said block and Working through said openings to fold inner end flaps against the former, and means Working through other openings in the table top to fold outer end flaps against the inner end flaps.

7. In a box making machine, a box-removing mechanism comprising in combination, a reciprocating slide, a pair of pivoted arms carried thereon and having gripping fingers, and means actuated by the reciprocation of said slide to open and close said arms.

8. In a box making machine, a box removing mechanism comprising in combination, a reciprocating slide, a pair of crossed arms pivoted on said slide and having gripping fingers at one end, shiftable plate mounted on said slide and connected to said arms, and means to shift the plate at the end of each stroke of the slide, to close and open the arms and thereby grip and release a box.

9. In a box making machine, the combination of a table having a discharge opening therein, a chute beneath said opening, means to form a box on the table in a position at one side of said opening, and means to Withdraw 'a formed box laterally from said position and drop it through the opening.

In testimony whereof, I aflix my signature in presence of two witnesses.

ERNEST SCI-ILEGEL.

Witnesses:

GUSTAVE C. REINNER, J OHN A. BOMMHARDT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images