US1589078A - Paper-box machine - Google Patents

Description

June 15 1926.

H. A. INMAN El AL APiaR Box MACHINE Filed Sept. 25, 1925 5 Sheets-Sheet 1 I N VEN TORS H. A. INMAN ET AL PAPER BOX MACHINE Filed Sept. 25, 1925 S sheets-sheet 2 June 15 June 15 H. A. INMAN ET .AL

PAPER BOX MACHINE Filed p 2 1925 5 Sheets-Sheet 3 June 1926. 1,589,078

H. A. INMAN r AL PAPER BOX MACHINE Filed Sept. 1925 5 Sheets-Sheet 4 45 Q 53A E'EL:IlII 231 16 1 g 37 45 e I 36 fi Z6 Z7 H; p 4 15 E V e Z5 53 I r ENTORS Sagidz Patented June 15, 1926.

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HARRY A. INMAN AND WILLIAM H. INMAN, OF EEVIARK, YORK, ASSIGNORS TO BLOOMER BROS. COMPANY, OF NEWARK, NEW YORK, .A. CORPORATION OF NEW YORK.

PAPER-BOX MACHINE.

Application filed September 25, 1925. Serial no. 58,678.

This invention relates to paper box machmes of the variety, for example, adapted for folding a blank about a former and pressing the glued folds in place to form the box. One object of the invention is to provide a machine of this character comprising improved mechanism for manipulating the blank and for applying pressure to the glued folds to effectively set and secure the same in position. More specifically stated, it is an object of the invention to provide such a machine having a moving former about whichthe blank'is folded and comprising roll-like members arranged to apply a relatively heavy pressure" to the glued folds repeatedly during movement of the former in opposite directions, for securely setting. the folds in thelde sired position. Another object is to provide a machine of the character described having an improved former provided with one or more blank gripping parts operated automatically by cooperating parts on the frame for moving the gripping parts to and from position for holding the blank on the former while its glued folds or flaps are being pressed and secured in place.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features be ing pointed out in the claims at the end of the specification.

In the drawings Figure 1 is a sectional elevation on the line 11 in Figure 4:, showing a paper box machine embodying the present invention;

Figure 2 is a similar view but with the parts in a different operating position; v

Figure 3 is a perspective view of a paper box such as made by the machine;

Figure 4 is a top plan view of the parts shown in Figures 1 and 2;

Figure 5 is an enlarged plan view of portions of the machine partly in section on the line 5 -5 in Figure 1;

Fi 6 is a view of partsshown in Fig ure 5 but in a differentjopeifating position;

Figure 7 is an enlargedelevation of portionso'f' themachine" partly in's ection on the line We? inv Figure 1; Y

Figure 8 is a view similar-to Figure? but with the parts in. a, different opei ngpo ai-tioaand shown and described in the said application I to which reference may be had for a more complete description of the machine as a whole, the present improvement relating more especially to means for holding and pressing the blank on the former. The ma chine comprises a main frame having side portions 10 formed with seats or sills 11 on which is supported a bed plate 12 carrying mechanism for pressing the blank folds, 1111i for stripping the completed box from the former as the latter is reciprocated from above toward and from the bed plate, together with portions of the means for ejecting the stripped boxes. The former is shown as a block-like member 18 fixed on the lower end of a plunger lt'carri'ed atits upper end by mechanism (not shown) by which it is reciprocated vertically toward and from the bed plate. The mechanism for reciprocating, the former may be of any suitable variety such as shown in our said application and forms no part of the present inventfon.

Fixed to'the frame 10 at the sides of the path of the plunger are cross bars 15 on which are carried rails 16. Supported on the latter by any suitable means and preferably so as to be adjustable toward and from the path of the former are brackets 17 carrying vertical strips 18. These strips are curved outwardly at their upper ends as at 19 and extend along and adj acent the path of move ment of the ends of the former for the purpose of folding and holding the end flaps of the box during the movement of the former to initially press-the glued surfaces of the foldstogether'. Similarly at the op-.

p'o site sides oftlie former are" folding strips 20, 21, respectively, mounted on cross rails 22 of the frame. It willbe'understo-od that when the former is raised to its upper position,a blankis fed beneath it"as described in our plicatioil and that the former in;

each yoke is a compression spring 42, Figure 2,- bearing at one end against the corresponding block and at the other against the yoke, so that the latter are pressed resiliently towards the former and engage the same simultaneously at opposite ends with counterbalanced pressure. A tension spring 43, fixed to a bracket 44 on the frame and to a bracket 45 on the yoke, tends to raise the same to the initial position shown in Figure 1. The lower side of each yoke is provided with an abutment or bracket 46 ha ing a facing 47 of leather or other suitable cushioning means located in the path of the bottom of the former. As the latter lesmends therefore, from the position shown in Figure 1, its bottom engages the abutment 47 of each pressing member or yoke 37 to positively rock the same and produce a substantially pure rolling action between the surface 38 ofthe member and the folded end portions of theblank on the former. As well understood in the art, the secure setting of glued blank folds requires for best results a substantial pressure continued or repeated over an appreciable interval of time while the glue penetrates and acquires the tackey consistency requisite to its holding power. This is eiificiently provided by the present invention through the heavy pressure applied by the pressing members or roll sectors 37 and through the fact that the folds are repeatedly pressed while the former is moving in opposite directions downwardly and back from its extreme lower position, adjacent which position of reverse movement it is usually driven at its lowest rate of speed. By this arrangement the glued folds are subjected to repeated pressing over. an appreciable interval of time without slowing down the maximum practical rate of travel of the former, or the rate of production of the machine. The rocking of the roll sectors 37 by the engagement of the abutment portion 47 thereof by the former itself, insures accurate coordination of movement by an eX ceedingly simple and reliable actuating device.

The shaft 40' carrying each yoke is preferably supported for adjustment toward and from the former, to secure the desired degree of pressure against the latter and also for accommodatin the machine to different sizes of former for different boxes. Accordingly the ends of each shaft 40'are lined in sleeves 48 each threadedly engaged with a sleeve 49 rotatably mounted on one of'a pair of spacedtie rods 50 mounted at their, ends in supporting bearings 51 bolted as shown at the cor: ners of the bed plate 12; Each sleeve 49 preferably has'fixedon its inner end a hand' also a look nut 54 at the outer side of sleeve 48, although an additional lock nut may be provided on the inner side of the latter also if desired to further secure the same in ad justed position. It is apparent from this construction that by rotating wheels 52 and sleeves 49 either of the pressing roll sectors or yokes 37 may be alined with or set up toward or retracted from the former, tor obtaining the desired pressure on the blank folds.v l he stresses produced during the pressing operation are transmitted to the rods 50 which are formed of a material adapted to withstand the same and relieve the stresses upon the bed plate and the frame of the machine each sleeve 48 being securely backed up and locked after adjustment by its lock nut 54. Additional supporting or steadying means are provided in the bearings for the shafts 40 located on the latter intermediate the forks of the yokes 37. Each bearing 55 rises from a base plate 56 which may merely rest or be adjustably bolted to the bed plate 12, to assist in taking up any downward component of thrust on the shafts 40.

The means for stripping the boxes from the former are located intermediate the fold ing strips and pressing members 37 and above the latter and comprise in the present in stance edged stripping bars 57, Figure 1, carried by the upper ends of spring strips 58 fixed at their lower ends to upright posts 59 on the base plate 56 of the bearings 55. A set screw 60 in each strip 58 provides for adjustment of the strippers 5'? toward and from the path of movement of the former and blal k and it is apparent from this construction that the strippers 57 are adapted to yield and permit the downward last passage of the blank but to engage the upper edges of the latter as the former rises after completion of the box; to strip the box from the former and from beneath the gripping parts 25 the engagement of which is not sufficiently positive to interfere with the stripping action. Posts 59 carry also fixed holding strips 61 in extension of the folding st *ips 18 for holding the blank folds during the descent of the former.

\Vhen the completed box is stripped as described it drops upon the abutment ledges 47 of the pressing members, while the latter are in their upper-most position, and is thence pushed laterally on to tracks 62 on the frame by ejecting means comprising a vertically arranged plate 63 fixed one rod 64 sliding in a bearing 65 on the bed plate 12 and reciprocated by any suitable means such. as described in our said application, in coordination with the movements of the former.

In operation, the former descends upon a blank fed beneath it and carries thesame downward y tiss es the. fielding are li'ill engagement with the blank folds during movement of said former and resilient means between said supporting means and yoke for pressing the yoke toward the former.

9. In a box making machine, a frame, a former reciprocatin on said frame, folding means on the frame cooperating with said former to fold a blank about the same, a pair of pressing roll sectors arranged for rocking movement on the frame in engag ment with the folded blank portions on opposite sides of the former during movement of the same in opposite directions to effect repeated pressing of the blank folds, and devices arranged for engagement by the former to rock said sectors.

10. In a box making machine, a frame, a former reciprocating on said frame, folding means on the frame cooperating with said former to fold a blank about the same, a pair of shafts on opposite sides of the path of the former, yokes embracing said shafts and mounted to slide transversely thereof and rock thereon, said yokes having curved faces arranged for rolling engagement with the blank folds on opposite sides of said former during movement of the same, spring means between said shafts and yokes for pressing the latter toward the former, and devices actuated by the movement of the former for rocking said yokes.

11. In a box making machine, a frame, a former reciprocating on said frame, folding means on the frame cooperating with said former to fold a blank about the same, a pressing member arranged for rocking movement on the frame in engagement with the folded portions of the blank during movement of said former in opposite direc tions to efiect repeated pressing of said folds, and means arranged to engage the blank subsequently to pressing by said member and to strip the same from the former.

12. In a box making machine, a frame, a former reciprocating on said frame, folding means on the frame cooperating with said former to fold a blank about the same, a pressing member arranged for rocking movement on the frame in engagement with the folded portions of the blank during movement of said former in opposite directions to effect repeated pressing of said folds, and means for stripping the blank from the former located between said folding means and pressing member.

13. In a box making machine, a frame, a former reciprocating on said frame, folding means on the frame cooperating with said former to fold a blank about the same, gripping means movable/on the former for holding a folded blank portion, a pressing member arranged for rocking movement on the frame in engagement with folded portions of the blank during movement of said former in opposite directions, means between said folding means and pressing member for stripping the blank from the former, an ejector for discharging the box at one side of the frame.

14. In a box making machine, a frame, a former reciprocating on said frame, folding means on the frame cooperating with said former to fold and hold a blank about-the same, members arranged for rolling pressing engagement with folded blank portions on opposite sides of the former, blank stripping means, an ejector for discharging the box laterally below said folding means at one side of the frame, and a gripping part on said former adjacent the discharge side of the frame operated automatically by the movement of the former for holding the corresponding blank fold.

15. In a box making machine, a frame, a former reciprocating on said frame, folding means on the frame cooperating with said former to fold and hold a blank about the same, members arranged for rolling pressing engagement with folded blank portions on opposite sides of the former, blank stripping means between said folding means and pressing members, an ejector for discharging the stripped box at one side of the frame, a gripping part on the former adjacent the discharge side of the frame for holding the corresponding blank fold, and cooperating parts on the frame for actuating said gripping part during movement of the former.

16. In a box making machine, a frame, a former movable on said frame, folding means on the frame for folding a blank about the former, a gripping part pivoted on the former for holding a blank fold, resilient means for moving said partto gripping position, a latch on the former for holding said part inoperative, and cooperating parts on said frame for tripping said latch and for returning said gripping part to inoperative position during movement of said former.

17. In a box making machine, a frame, a former movable on said frame and provided with an operating shank, folding means on the frai'ne for folding a blank about said former, a gripping part pivoted on said former for holding a blank fold, resilient means for moving said part to gripping position, a spring actuated latch pivoted on said shank for holding said gripping part inoperative, a tripping part on said frame for moving the latch to release said gripping part for movement to blank holding position, and a {art on said frame for returning said gripping part to inoperative position during movement of said former.

HARRY A. INMAN. WILLIAM H. INMAN.

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