US2061886A - Packaging machine - Google Patents

Description

Nov., 24, 1936. F. WEST PACKAGING MACHINE 2 Sheets sheet l l Filed May 22, 1935 .ATTORNEY ZSLSS@ F. WEST PACKAGING MACHINE Nom Z4, H936.

Filed May 22, 1935 2 Sheets-Sheet 2 INVENTOR W ATTORNEY) ij, ffy

Patented Nov. 24, 1936 y 2,061,886

UNITED STATES PATENT oEFlcE PACKAGING MACHINE Fred West, Brooklyn, N. Y., assigner topS. Gumpert Co., Inc., Brooklyn, N. Y., a corporation of New York Application May 22, 1935, Serial No. 22,700 3 Claims. (Cl. 93-6) This invention relates to apparatus for packzontally at the top (Fig. 2) and the third ap 36 aging materials and particularly to apparatus at each end extending vertically upward from for closing and sealing the ends of a container of the lower edge. The box is conveyed in this concardboard or the like. dition into the machine, Vside guide means being The object of the invention is to provide packprovided to hold the box ends closed while the 5 aging apparatus simple in form and inexpensive last flaps are coated with an adhesive and folded in cost, and adapted to receive the package at down and pressed in place to seal the package. one end and to automatically deliver it in com- The side guide means comprise side bars 48 pletely sealed condition at the other. adjustably supported by brackets 4I from posts lo Further objects of the invention, particularly 42 on cross piece I2. The box Bin the condition 10 in the automatic application of the adhesive and above described is placed on the trackway strip the simple guide means for subsequently folding I8, between side bars 40 and with its aps 36 and retaining the sealing flaps in place during the in contact with said bars While the outermost preliminary setting will appear from the following flaps 35 extend outward above these bars. The l5 specification taken in connection with the accombox after insertion is engaged by one of the feed 15 panying drawings in which lugs 45 of the chain 2l and moved along track- Fig. 1 is a plan view of one embodiment of the way I8, 20 and passes under the top bar 46 adinvention with entrance and discharge ends brojustably carried at one end by cross piece 41 exken away to shorten the space occupied by the tending transversely between posts 42. The other 20 ligure; end of this top bar 46 is adjustably supported 20 Figs. 2 and 3 are vertical sectional views taken from the cross pieces 48, 49 spanning posts 58, 58 on the lines 2-2 and 3-3 of Fig. l; and 5I, 5I on cross bars I4, I5.

Fig. 4 is a vertical longitudinal sectional view The travel of each chain lug 45 carries its box ,of the apparatus shown in Fig. l; and into the machine and brings the outwardly ex- 25 Fig. 5 is a transverse vertical sectional view tending flaps 35 against the adhesive supplying g5 taken on the line 5--5 of Fig. 4. v rolls 55 mounted on shaft 21 and dipping in ad- In the specic embodiment of the invention hesive liquid in tankT suspended underneath the shown in the drawings main frame supports F are rolls as shown. At the top of the rolls 55, the mounted on legs I8, II and connected by cross pressing rollers 51 are positioned Aon transverse pieces I2, I3, I4, I5, and I6. The cross pieces I2, shaft 58 mounted in brackets 59 on cross piece 30 I3, I4, and I5 are spaced above frame members F I3, these rollers 51 being closely adjustable to by bushings I1 through which pass the fastenclear the peripheries of rolls 55 sufficiently to ing bolts I8. A center strip 28 extends longituavoid picking up any adhesive while at the same dinally along the middle of these cross pieces I2, time acting to force the aps in uniform con- 35 I3, I4, and I5 and overhangs at the entrance end tact with the surfaces of the rolls 55. 35 of the machine (left end of Fig. 4) and serves The side guides 48 are terminated just short to support the trackway and feed chain for the of rolls 55 and replaced by wire guides 68 strung packages. across from side bars 48 to the side plates 6I The package trackway is formed by parallel bolted by flanges 52 to the cross piece I4 on the strips I9, 28 spaced apart and guiding the feed delivery side of rolls 55. 40

chain 2| between them, the feed chain 2I sliding The side flaps 36 of box B are thus held closed on the center strip 28 and around the drive to and through the rolls 55 and until covered by sprocket 22 and return idler 23 and an entrance the folding down of the outermost iaps 35. idler (not shown). The drive sprocket 22 is fas- Following the coating of the under surfaces of tened to crossshaft 25 rotating in bearings 26 on these aps 35 with the adhesive the aps are en- 45 frame members F and driven from the main gaged by the closing bars 62, 63 adjustably supdrive shaft 21 by chain 29 and sprockets 38, 3|. ported by rods 64 from posts 58, 5I and are bent The main shaft 21 carries the pulley 32 driven by as shown to contact with the tops of the flaps belt 33. 35 and turn and press them gradually down- In the machine shown the package operated on ward as the box B passes out of the rolls 55. 50 is a box B,square in section, and having four fiaps Then at the point P on each side, these bars 82, at each end. The box is lled and three of the 63 close the flaps 35 against the underlying flaps four flaps at each end are folded down and the with the adhesive acting to cement the contacting box is placed in the conveyor with the fourth open surfaces and the continued movement of the box flap 35 at each end protruding outward hori- B draws the closed aps along the continuation of the bars 62, 63 for a considerable distance before the box is delivered to the belting conveyor which seizes the box ends in a broad distributed grip acting to press all contacting parts of the aps into binding engagement.

A sub-frame f is supported by cross piece I6 and legs 66 and carries the bearings 61 for the vertical shafts 68 of the pulley idlers 69 around which belts 'l0 run on each side. The drive pulleys 'll for these belts are on the vertical shafts 12 in bearings 13, 14 of cross pieces I6, 15 of the main frame. These shafts 12 are driven from shaft 16 by bevel gear sets 11, the shaft 16 being chain driven as shown from shaft 25 and supported in bearings 'I8 on legs |0,and the speed of the drive is preferably sufficient to receive and convey the boxes B out of contact with each other. The inner lengths of travel of the belts l0 are provided with flat backing strips `81 adjustably and resiliently supported by brackets 88 from the sub-frame f and acting to maintain the belts I0 in ilat contact with the ends of the boxes while the adhesive is setting. Angle bars 80 on posts 8| between belts 10 form a supporting track for the boxes as they are borne along by the belts, and the adjustable belt-tensioning idlers 82 mounted on the adjustablly pivofted bracket arms 83 maintain the proper tautness of the belting 'l0 on each side.

The boxes B ready for sealing are placed in the conveyor at the entrance end and picked up by the chain lugs and carried along to the adhesive applying rolls 55, where the under surfaces of the extending flaps 35 are coated with n adhesive. After this the closing bars 62, 63 wipe the flaps 35 downward against the ends of the box, the inward bending of these closing bars being reached at approximately the point P, after which the bars incline `downward to provide a further downward wiping movement against the l closed flaps, after which the bars are parallel and horizontal to hold the ends closed and deliver the box in closed condition to the nal belt conveyor and sealing device. This belt conveyor with its belting l!) on each side may be extended as desired and is long enough to insure a preliminary setting of the adhesive and a permanent closing of the box.

All the operators have to do is to insert the boxes at the entrance end of the apparatus and receive them in finally closed condition at the opposite end. While the invention has been described in connection with apparatus adapted to close and seal both ends of the package, it is obvious that the apparatus may be modified or operated to close only one end of the box, the other end being closed or left open as desired.

I claim:

1. In package sealing apparatus the combination with a conveyor for carrying a package with a closed and open flap at each end, of a guide at the side of the conveyor for holding 'fthe closed flap closed, a roller carrying adhesive at the side of the conveyor beyond said guide, a closing bar beyond said roller for closing down the open flap, and a relatively small diameter guiding wire adjacent the roller stretched for a distance between the guide and closing bar, whereby said roller may be located very close to the end of the package and apply adhesive over a large area of the open flap.

2. In package sealing apparatus the combination with a conveyor for carrying a package with closed and open iiaps at each end, of a guide at each side of said conveyor for yholding closed some of the flaps at each end of the package, a roller carrying adhesive located beyond each guide, a closing bar beyond the roller at each side of the conveyor for closing down an open ap, and a relatively small diameter wire stretched for a distance between the guide and closing bar adjacent each roller, whereby said rollers may be carried very close to the ends of the conveyor package and apply adhesive over a large surface of the open flap.

3. In package sealing apparatus the combination with a conveyor for carrying a package with closed and open flaps at each end, of a guide at each side of said conveyor for holding some of the flaps closed, a roller carrying adhesive beyond each guide, a short side plate beyond each roller and a closing bar beyond each side plate, said closing bar curving near the outer edge of each side plate and extending along the side of the conveyor whereby the open flap at each side of said package is guided between said side plate and closing bar and is closed to the .sealing position, and a relatively small diameter guiding wire stretched between the guide and side plate at each side of said conveyor whereby each roller may be located close to the conveyor.

FRED WEST.

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