US3312154A - Carton bottom sealing machine - Google Patents

Description

April 4, 1967 F. D. PIERCE 3,312,154

CARTON BOTTOM SEALING MACHINE Filed Feb. 18, 1965 4 Sheets-Sheet 1 I NVENTOR 5 3 FRANK 0. PIERCE A 7' TOPNEV April 1967 F. D. PIERCE 3,312,154

CARTON BOTTOM SEALING MACHINE Filed Feb. 18, 1965 4 Sheecs-Sheet 2 INVENTOR F RANK 0. P/ERCE BYM%JM;

' ATTORNEY Aprii 4, 1967 F. D. PIERCE CARTON BOTTOM SEALING MACHINE 4 Sheets-Sheet 5 Filed Feb. 18, 1965 INVENTOR. FRANK l2 PIERCE A I" 5 %4 M A ril 4, 1967 F. D. PIERCE 3,312,154

CARTON BOTTOM SEALING MACHINE Filed Feb. 18, 1965 4 Sheets-Sheet 4 RETURN TO TANK SEQUENCE VALVE DOUBLE ACTING CONTROL VALVE SEQUENCE VALVE INVENTOR. FRANK 0. PIERCE A 7' TO/PNE V United States Patent 7 Cfifice 3,312,154 Patented Apr. 4, 1967 3,312,154 CARTON BOTTGM EALING MACHINE Frank D. Pierce, Salinas, Calif, assignor to Klernark, Inc, Salinas, (Ialifl, a corporation of California Filed Feb. 18, 1965, Ser. No. 433,653 4 Claims. (Cl. 93-49) The present invention relates to a machine for the rapid production of bottom sealed cartons and relates particularly to the production of bottom sealed cartons from flats at the point of use.

Amongst the objects of the present invention is the safe, positive gluing of the carton flaps in a closed glue system with application on the inner surface of the bottom side flaps of the carton.

Another object is the use of a gluing mechanism which is readily adaptable with a minimum of effort, for use with a hot or cold glue. The machine provides glue hands which are always readily available for ease in cleaning and substitution.

Another object is to provide a machine of real portability so that it may be moved and repositioned at the point where bottom sealed cartons are needed in the production packaging line.

Still another object is to provide a machine which has a more extensive adjustment to bottom seal a wider variety of box sizes than has heretofore been possible, while at the same time providing fast silent operation.

Another object is to provide -a device Where no track is required for the box to ride upon presentation to the machine.

Still another object of the invention is to provide a bottom sealing machine which has a manual delivery with the bottom end flaps folded inwardly. This provides a better squaring of the box by the operator and the operator can eliminate deformed and malformed flats prior to delivery to the machine.

Another object of the invention is to provide a machine which is small and occupies a minimum of floor space while at the same time delivering greater capacity than similar sealing machines of much greater size. In the present machine while a carton is being sealed by the machine the operator is getting the next carton ready for presentation to the machine. In this manner an inexperienced operator can quickly establish a rate of 600 cartons per hour.

Still another object of the invention is to provide a bottom sealing machine for cartons which requires a minimum of installation time and costs, and a minimum of maintenance cost, thus eliminating shut-down time and a delay in the packaging line.

Further objects are to provide a construction of maximum simplicity, economy and ease of assembly and disassembly, also such further objects, advantages and capabilities as will fully appear and as are inherently possessed by the device and invention described herein.

The invention further resides in the combination, construction and arrangement of parts illustrated in the accompanying drawings, and while there is shown therein a preferred embodiment thereof, it is to be understood that the same is illustrative of the invention and that the invention is capable of modification and change and comprehends other details of construction without departing from the spirit thereof or the scope of the appended claims.

Referring to the drawings:

FIGURE 1 is a side elevational view of the box sealing machine of the present invention with the upper portion along the line IIII of FIGURE 2 in section;

FIGURE 2 is a front elevational view showing the right hand portion in section;

FIGURE 3 is a fragmentary perspective view of the box feed. A cardboard carton with its end flaps tucked under vide a mounting for other members.

and side flaps hanging along both sides of the parallel traveling rods, positioned between the box push plates and the entry of the box guide holder assembly;

FIGURE 4 is a fragmentary front elevational view showing the pressure foot and anvil assembly in full lines in the closed position and the open position in broken lines; and

FIGURE 5 is a schematic diagram of the hydraulic system.

Referring now more particularly to the drawings in which like reference numerals indicate like parts in the several views, the base is in the form of a cross having a longitudinal member 10 which may be formed as an inverted U as shown. The transverse member 14 which lies adjacent the front end of the longitudinal member is likewise U shaped and may be notched as at 16 at its middistance to interlock with corresponding notches in base member 10 to form flush bottom and top surfaces. Obviously the cross base portion 14 may be made of two pieces suitably welded or otherwise secured to the longitudinal base 10.

The vertical portion is also a frame assembly having a pair of parallel vertical U shaped side members or uprights 20 fitted within the transverse base 14 at the outer ends thereof, with the opening of the U facing outward. Across the top ends of the side members 20 a U shaped cap 21 is secured to stabilize the vertical frame and pro- The open channels of the uprights 20 may be closed and covered with safety guards 22 (see FIGURE 2).

The vertical compression and anvil assembly generally designated 24 is mounted on the transverse frame 21 and between upright-s 20. At the mid-point of the transverse frame member 21 and extending downwardly therefrom there is mounted an hydraulic cylinder 26 terminating in cylinder head 29 having suitable seals and a suitable opening for the hydraulic piston rod 30 movably mounted therein. The cylinder 26 has suitable hydraulic ports and connections for hydraulic lines for its controlled operation (as will be disclosed). Swivel mounted pressure plate having substantially universal and independently movable pressure pads generally designated 32, is mounted on the lower end of hydraulic piston rod 30. As shown, four pressure plates 33 are independently suspended from swivel means 32 and each is free to swivel in any direction to accommodate to the irregularities in carton bottoms and provide substantially uniform sealing compression against a carton bottom with folded and glued bottom flaps backed up by anvils, as will be described hereinafter. To maintain the vertical alignment of the pressure plate assembly 32 vertical rod-s 34 are secured to the pressure plate mounting at the lower end of piston rod 30. The rods 34 are spaced from the wall of cylinder 26 and bottom cylinder head 29 and move with the movement of the piston rod 30.

Yoke 37 comprises a pair of identical cross-arm members 38 which are spaced face-to-face and bowed at their mid section by a pair of secured transverse spacer plates 39 forming a central vertical space providing clearance around cylinder 26 and its cap 29. Rods 34 are attached at their upper ends to spacer plates 39 so that yoke 37 is perpendicular to vertical rods 34 and move up and down with the rods and piston rod 30 as a unit with clearance around the cylinder 26 which is stationary. The outer ends 42 of yoke 37 pass through vertical slots 43 provided in the upper faces of uprights 20. The vertical slots 43 extend for a distance slightly more than the stroke of piston rod 30. At the upper-most position of piston rod 30, yoke 37 is also raised to its highest position within the vertical frame members 20 and the transverse member 21. Rubber bumpers (not shown) may be affixed within frame member 21 to provide a positive, resilient limit for the 'forward end of the tube 73.

movement of yoke 37. The two cross-arm members 38 of yoke 37 are bowed inwardly toward each other at their outer ends 42. A pair of adjustable push rods 45 have their top ends pivotally secured between the spaced ends 42 of yoke 37 by pins 44. Each rod 45 moves in a general up and down movement within the channel of each upright 20 so as to synchronously follow the vertical movement of yoke 37 and piston 31. Push rods 45 are adjustable in length by screw 46 and each is pivotally connected at its bottom end 48 to the outward ends 50 of a pair of transversely extending anvil actuating arms 51, by pivot pins 49. Arms 51 reach inwardly through vertical slots 52 in the face of each upright 20 for a distance suitable for vertical angular motion of arms 51. Horizontal stub shafts 53 are rotatably mounted on the inner faces of the vertical frame members 20. The inner ends 54 of arms 51 are secured to the stub shaft 53 for rotation therewith. Each stub shaft 53 is rotatably retained in a pair of journal boxes 55 mounted on uprights 20 and positioned below the lowermost reach of pressure plates 33 when piston rod 30 is in its maximum downward position. There are two pairs of anvil arms 56, one pair at either side. Each pair is secured at one end to the rotatable stub shaft 53 for rotation therewith. Each pair of arms extend transversely inward so that their ends 57, in the horizontal pressure position, will be spaced from each other. Two anvil plates 58, one at each side, are mounted on the top edge surfaces on each pair of anvil arms 56. Each anvil 58 has a flush top surface 61 and shallow downwardly turned flanged edges 62 along both sides for interlock-ing and secure mounting on the arms 56. Longitudinally adjustable carton stops 63 at the outer or front ends of each anvil 58 extend upwardly at right angles to the flush top surface 61.

The frame or base member mounts the horizontal box pusher assembly generally designated 66. Two parallel guide rods 67 mounted in a common horizontal plane above the base 10 have their front ends secured in a transverse support brace 68 extending between the frame uprights 20 and their rear ends in a stationary support member 71 which is mounted on post 72 at the rear end of base member 10. A movable pusher is slidably mounted as a unit on guide rods 67. This comprises a generally triangular frame 76 at the base angles of which are two slidable guide collars or tubes 74 encircling the guide rods. At the apex of frame 76 is mounted a squared rod 77 which extends forwardly over and parallel to the guide rods 67. Telescoping tube 78 is slidably mounted over the rod 77. Both the tube 78 and the rod 77 have adjustment through holes which may be lined up, forward or backward, to the desired position and then locked in the adjusted position by pin 79. Transverse push plate 80 is secured in any suitable manner to the The shape of the push plate 80 may be varied in any manner desired so long as it performs its intended function of moving a box into the machine without bending, creasing or otherwise darnaging the box end.

The pusher ram assembly is mounted on front and rear brackets 82 and 83 respectively, and spaced parallel above longitudinal base member 10 and below and between guide rods 67. Hydraulic cylinder 81 is mounted between brackets 82 and 83 and is provided with the conventional suitable hydraulic ports and hydraulic line connections. Piston 87 is slidably mounted and sealed within cylinder 81 and piston rod 88 is attached to hydraulic piston 87. The free end of piston rod 88 is secured to bracket 90 which depends from the base of the triangular support 76. The connection is such that as the piston rod 88 is moved longitudinally back and forth, the movable box pusher moves as a unit with it.

In the hydraulic control the movement of the box pusher is determined in part by a straight guide tube 92 which is positioned longitudinally above the base 10 but to one side thereof. Control rod 99 moves freely in said tube but is attached at its rearward end to bracket 101 which is secured to the same side of the triangular support 76 as the tube 92 is with respect to base 10. Thus as the box pusher moves, the control rod 99 moves, guide tube 92 is maintained in its horizontal alignment position by means of bracket 94 secured on the forward bracket 82 and to bracket 95 secured to transverse support brace 69. Guide tube 92 exceeds the stroke of piston rod 88 for its full forward and back stroke. Guide plug 97 mounted on the forward end of the control rod 99 is inserted in the guide tube 92 to maintain the alignment of the control rod throughout its stroke. Because control rod 99 moves forward and back as a unit with the triangular support 76 of the movable box pusher, two longitudinally adjustable set collars 102 and 103 are mounted on control rod 99, so that collars 102 and 103 may be positioned along control rod 99 and retained at desired points. These are normally positioned with collar 102 near the front end and collar 103 adjacent the rearward end.

The portion of the rod 99 which is between the settings of collars 102 and 103 rides in an open fork 100 in the top end of lever 104 and moves therein without touching except for the engagement of set collars 102 and 103. The open fork 100 is deep enough so that collar 103 engages it on the forward stroke to move the lever 104 to the left, as shown in FIGURE 1, while collar 102 moves it to the right on the rearward stroke. The bottom end 107 of lever 104 is attached to transverse rotatable shaft 108 for rotation therewith. The shaft 108 may conveniently be mounted through the longitudinal base 10. Foot pedal 111 is atatched to the rotatable shaft 108 for convenient foot operation of the control lever 104. Weight lever 112 is attached at the forward side of the shaft 108, on the opposite side to the foot pedal 111. Control weight is mounted on lever 112 for sliding adjustment and has a set-screw means so that it may be set at any desired distance along lever 112. A link 114 is connected between control lever 104 and an operating lever 109 which is pivotally mounted at its midpoint on the double acting control valve 115. The double acting control valve 115 is operated by the movements of lever 104. It will be observed that as control lever 104 is moved, the hydraulic pressure in the line is switched into forward, reverse or neutral. A pair of sequence valves 116 and 117 are mounted on transverse base member 14 conveniently near double acting sequence valve 115 to handle the line pressure in accordance with the direction of flow as switched by the double acting con trol valve 115. Adjustment bars 138 are attached transversely over two tubes 139 slidably mounted on guide rods 67 for longitudinal adjustment and positioning of the glue applicator 135. Glue applicators may be of the pad or roller type, or any other suitable type and are mounted on the glue applicator holders 136 which are in turn mounted on vertical pivot posts 141. Each bracket is further attached to transverse bars 138 and under the bottom edge of each glue applicator holder 136. The glue applicators on holders 136 are pivoted into position with slight pressure against the outside surfaces of the bottom side panels of a box which are held in vertical position by flap guides or back-up plates 140, as the same passes into the vertical frame for pressure sealing.

To guide a box into the vertical frame and position it for sealing, appropriate side guides are provided. The guides, being upper guide 144 and lower guide 145, are mounted at either side in longitudinal alignment on frames 146. Frames 146 are welded or otherwise secured to a pair of vertically positioned U shaped members 147, the U shaped members being spaced so that they will straddle the vertical frame members 20 with the frames 146 on the inside of the vertical frame members 20, in facing relation. The legs of the U shaped members are held in slidable adjustable engagement in tubes 148, pairs of which are suitably secured on the forward and rearly away from each other. guides 145 are securedto the inner face of the frame 146 ward faces of the vertical members 20. It will be seen that the legs of the U shaped members are slidably retained in the tubes 148 so that the frames 146 may be moved transversely inward toward each other or outward- The longitudinal lower box and are flared outwardly at the entrance end 151 to aid in directing a box into proper position. The upper guides are in two longitudinal portions 144 and 147 at either side. Both portions 144 and 147 are L-shaped with the upper flange 161 turned inwardly at the top. In this manner they serve not only as a guide for the side of the box, but for the top edge of whatever portion of the box is being put through the machine. Not only are the top guides 144 and 147 adjustable as to vertical height but they are resiliently mounted as by expansion springs 154. Like the guides 145, the top guides 144 are flared at their entrance ends as at 153 and 162. The side guides 144, 147 and 145 are positioned above and longitudinally aligned with the box receiving platform 127 and the support blade 133. These side guides 144, 147 and 145 extend from their entry ends beginning at the box receiving platform 127 forward to a position above the anvil stops 63. Top guides 144 and 147 are individually spring mounted by vertical brackets 164 with hold down pins 155 and springs 154. Guide straps or brackets 164 are secured to the longitudinal members of frame mem bers 146 and outside the surface of guide 145 to maintain the vertical alignment. Hold down flanges 161 are raised or lowered to the vertical adjusted position by the tension on the compression springs 154.

An open frame 127 is built on the base to receive a set-up box in position to be fed into the machine for bottom gluing. The vertical supports 132 are positioned on and transverse of the base 10. These supports are made to telescopically receive the depending legs 131 in any vertically adjusted height. The legs support an open horizontal frame 128. The frame 128 is suitably braced to the legs 131 to make this assembly rigid. The level of the horizontal frame 128 is the same .as that of the narrow blade-like box support bar 133. Box support bar 133,is a flat piece of material turned on edge. It passes through the vertical frame and the mid section and is in alignment with the centerline of the longitudinal base 10.

The front portion projects forwardly to correspond with the front end of base 10 and has a leg 134 which is securely attached to bracket 82. Since the blade of the box support 133 carries very little weight there is only a vertical brace 130 adjacent its rearward end.

A glue applicator is positioned at either side of the box positioner frame 127 and just beneath the forward end thereof. Each glue applicator holder 135 is pivotally mounted on vertical posts 141. The glue applicators or hands are mounted on the inner faces of the holders 135. In FIGURE 1 the near gluing assembly has been removed to make the description clearer. Each gluing assembly 136 including the applicator holders 135 and the back-up plates 140, is adjustable in or out from the center line of the frame 10 on a pair of transverse adjustment bars 138 which support the entire gluing assembly 136. The tension on the hands is set by screw 137. Back-up plates 140 are provided at either side to assure proper gluing, and are adjustable in and out as a unit with the gluing assembly 136.

Referring now particularly to FIGURE 5 which shows the hydraulic operating system in diagrammatic form, hydraulic cylinders 26 and 83 are in a coordinated system in which the direction of hydraulic fluid flow between parts is indicated by the arrows. Fluid inlet line 119 leads and 123 lead respectively to bottom cylinder head 29 of cylinder 26 and to the port in cylinder 83 in back of the piston head 87. From sequence valve 117 lines 124 and 125 respectively lead to the top port 'in cylinder '2'6 'and to the forward port in cylinder83. Fluid return lines 126 are provided from the three position valve 115 to a fluid reservoir (not shown) and thefhydraulic system is energized by a suitable hydraulic pump (not shown) in series between the reservoir and inlet line 119.

While the operable system is'here shown to be an hydraulic system, any suitable operating method such as electronic or mechanical is quite satisfactory.

Operation The initial condition of the machine prior to commencing operations is that piston rod is extended vertically downward to its maximum position from its fixed cylinder 26, with pressure plates 33 lowered to their down position and anvils 58 rotated into the up position in a horizontal plane substantially against pressure plates 33 as shown in FIGURE 4 except that no carton is present. Piston rod 88 is extended rearwardly from cylinder 83 with the support 76 rearwardly so that push plates 80 are in the rear position out of the way, but over the rear portion of the box receiving platform 128. In this initial position, double acting control valve 115 is in neutral with no fiuid flow in lines 120 or 121 and control lever 104 is substantially vertical. The glue applicators have been connected to a suitable hot or cold glue pressure supply (not shown) in a closed circuit. To start, the electric-hydraulic prime mover is switched On. The operator takes a carton 167 from the stack of flat folded cartons and by slight pressure at the opposite corners the flat is opened to a rectangular tube. These cartons are of corrugated cardboard, pressboard andthe like, and

. have sides 168 and ends 169. The bottom of carton 167 is open and the bottom side flaps (major flaps) 170 and bottom end flaps (minor flaps) 171 (as well as the top side and end flaps, if the carton has these) all lie in their respective vertical planes. As the carton is presented to the machine the operator folds the bottom end flaps 171 inwardly to a horizontal position. He then places carton 167 with the folded flaps 171 on guide bars 128 with the bottom side flaps still in their vertical position and straddling the bars 128 at either side. Cart-on 167 has its forward end 169 just behind entry guides 151 and 153 of the guides 144 and 145. The rearward end 169 of box 167 is in position in front of push plates of the box pusher 77.

When carton 167 is in the first of a series of like sized cartons to be processed through the machine, it is likely that the operator must make a few preliminary sizing ad justments. These adjustments include adjusting glue hand assemblies 136 in or out along rods 133 until hands 136 will engage the inner surfaces of bottom side flaps 170 as they pass through. Side portions of box guide holder 144 are adjusted laterally in or out so as to line up side guides for the correct width of the carton or box. Hold downs 144 and 147 are raised or lowered as the circumstances require. If the carton, as shown in the drawings, has no top end flaps or side flaps, then the hold down flanges .161 of bold downs 144 and 147 are lowered to guide along the top edge of the box 167. In this manner the machine is adjusted to the precise box size both laterally and vertically. The same thing is accomplished when a box or carton has top side flaps. The hold down flanges 153 are raised so that the top edge of the top side flaps guide therein. Within the dimensional limits of the machine, the adjustment capabilities to accommodate to various sizes of boxes is quite extensive. Push plate 80 is adjusted forwardly adjacent to the rearward end 169 of carton 167 as previously described. Set collars 102 and 103 are adjust-ably positioned along control rod 99 to limit the forward stroke and the rearward stroke of piston rod 88 in accordance with the length of the box 167.

Since the carton 167 may be cardboard, corrugated board or wax impregnated or otherwise waterproofed, a suitable hot or cold glue selection is required.

Having made the proper adjustments for the carton 167 and with the carton placed in the described position on platform 128, the operator depresses the foot pedal 11 1 moving trip lever 104 rearwardly and opening double acting control valve 115 in the required direction permitting the flow of hydraulic fluid through line 120 into sequence valve 116, and from there to the bottom 29 of vertical compression ram cylinder 26. Piston rod 30 is retracted into cylinder 26 forcing the hydraulic fluid through line 124, through sequence valve 117 and through valve 115 to the reservoir, raising pressure plates 33 upwardly and simultaneously angularly swinging anvils 58 into the down position toward uprights 20 and clear of the forward movements of the carton 167. When piston rod 30 reaches the top of its stroke within hydraulic cylinder 26 pressure is built up in the circuit and sequence valve 116, set at a pre-determined pressure threshold, diverts the hydraulic fluid at excess pressure through line 123 to the rearward end 86 of cylinder 83. This pressure causes piston rod 88 to move forwardly to retract into cylinder 83 which forces fluid through sequence valve 116 and through the valve 115 to the reservoir. Because of the attachment to the piston rod 88 the triangular base 73 is moved forwardly along guide rods 67 moving the rod and box push plate 80 forwardly. The push plate 80 contacts the rear end panel 169 and carton 167 is pushed along platform 12-8. The bottom side flaps 170 in their forward movement each pass between the back up plates 140 and gluing ha-nds 136 where glue is applied to the inward facing surfaces of the bottom side flaps 170. Simultaneously and continuously with the gluing operation, carton 167 is moved forward between box guide holder side portions 145 and pushed down by its hold down flanges 161 onto box support bar 133. At the time carton 167 reaches the end of its forward travel, adjustable collar 103, positioned on control rod 99, engages the back side of fork 100 causing trip lever .104 to move forward. The movement of trip lever 104- switches three position hydraulic control valve 115 through the neutral position closing the circuit through sequence valve 116 and opening the circuit through line 121 into sequence valve 117 then through line 124 into the top 27 of cylinder 26. The pressure here drive the piston rod 30 vertically downward. The fluid returns through line 122, through sequence valve 116, and control valve 115 to the reservoir. Pressure plates 33 move downwardly with the piston 30 into carton 167. The cross-arm assembly moves downwardly simultaneously with the piston 30 to bring the anvils 60 up to the horizontal position beneath the box. In this movement the bottom side flaps 170 are bent upwardly .and inwardly so that the glued surfaces contact the bottom end flaps 171. The stops 63 square carton 167 against push plate 80 and the side guides 145. Pressure plates 33 and anvils 60 squeeze the bottom side flaps 170 folded against the bottom end flaps 171 allowing the glue to set. At this point piston rod 30 has reached its maximum downward stroke and pressure begins to build up within the circuit through sequence valve 117 causing it to switch at a pre-determined pressure diverting hydraulic fluid through line 125 into the front end 84 of cylinder 83 moving the piston rod 88 in a rearward stroke and forcing fluid through line 123 through sequence valve 116 .and control valve 115 to the reservoir. Control rod 99 also moves back until the initial position as shown in FIGURE 3 is reached. At this point collar 102 is carried by control rod 99 up against the front side of fork 100 of trip lever 104 pushing it into a vertical position and switching three position control valve 115 into neutral closing all circuits and completing the cycle.

The operator then places another carton 167 on the box platform 127 as before and depresses lever 111 repeating the cycle with the second carton displacing the first carton 167 as it moves forwardly into position for sealing.

I claim:

1. A carton bottom sealing machine for paper cartons and the like comprising in combination, a base structure having a main longitudinal member and a main transverse member, a vertical transverse frame assembly having vertical members secured at each end of said main transverse member and a horizontal top portion connecting the top ends of said vertical members to form a rigid frame, longitudinal guide rods mounted above said longitudinal base member with said rails all in the same horizontal plane, a carton pusher assembly mounted for slidable controlled movement on said rails, a carton receiving platform rigidly mounted on said base to receive a carton with its bottom end flaps folded inwardly and resting on said platform and its bottom side flaps extended downwardly at each side thereof, adjustable guide means mounted on said vertical frame members for directing a carton into the sealing station within said frame, adjustable glue means for applying an adhesive to the inner faces of the bottom side flaps of a carton during passage to the sealing station, a compression assembly mounted for vertical movement between said vertical frame members at the sealing station, cam and lever means including a pair of anvils operable in cooperative movement upwardly to approach the compressor assembly in its downward movement to near contact and in the reverse direction with its upward movement, means for operating said machine in cooperative planned sequence, and control means mounted for movement with said carton pusher assembly for controlling the sequence of one complete cycle.

2. A carton bottom sealing machine for telescope and RSC paper cartons and the like comprising in combination, a base structure having a main longitudinal member and a main transverse member said members having a common top plane, a vertical transversse frame assembly having vertical members secured at each end of said main transverse member and a horizontal top pofiion connecting the top ends of said vertical members to form a rigid frame, longitudinal guide rods mounted above said longitudinal base member with said rails all in the same horizontal plane, a carton pusher assembly mounted for slidable controlled movement on said rails, a carton receiving platform rigidly mounted on said base to receive a carton with its bottom end flaps folded inwardly and resting on said platform and its bottom side flaps extended downwardly at each side thereof, adjustable guide means mounted on said vertical frame members for directing a carton into the sealing station within said frame said means being adjustable vertically as well as laterally, glue means adjustable longitudinally and transversely for applying an adhesive to the inner faces of the bottom side flaps of a carton during passage to the sealing station, a compression assembly mounted for vertical movement between said vertical frame members at the sealing station, cam and lever means including a pair of anvils operable in cooperative movement upwardly to approach the compressor assembly in its downward movement to near contact and in the reverse direction with its upward movement means for operating said machine in cooperative planned sequence to move the carton from the receiving platform by means of the pusher, glue the inner surfaces of said side flaps, deliver the same to the sealing station, fold the bottom side flaps against the end flaps and squeeze the carton bottom in between the anvils and the compression assembly to seal and carton, and control means mounted for movement with said carton pusher assembly for controlling the sequence of one complete cycle.

3. The combination of claim 2 wherein the machine is portable as an operable unit and the means for operating the machine is a closed hydraulic system.

4. A carton bottom sealing machine for telescope and RSC paper cartons and the like comprising in combination, a base structure having a main longitudinal memher and a main transverse member said members having a common top plane, a vertical transverse frame assembly having vertical members secured at each end of said main transverse member and a horizontal top portion connecting the top ends of said vertical members to form a rigid frame, longitudinal guide rods mounted above said longitudinal base member with said rails all in the same horizontal plane, a carton pusher assembly mounted for slidable controlled movement on said rails, a carton receiving platform rigidly mounted on said base to receive a carton with its bottom end flaps folded inwardly and resting on said platform and its bottom side flaps extended downwardly at each side thereof, adjustable guide 'means mounted on said vertical frame members for directing a carton into the sealing station within said frame said means being adjustable vertically as well as laterally, replaceable glue means adaptable for hot or cold glue and adjustable longitudinally and transversely for applying an adhesive to the inner faces of the bottom side flaps of a carton during vpassage to the sealing station, back-up plates on the outer side of said side flaps cooperating in the effective gluing of said flaps, a compression assembly mounted for vertical movement between said vertical frame members at the sealing station, cam and lever means including a pair of anvils operable in cooperative movement upwardly to approach the compressor assembly in its downward movement to near contact and in the reverse direction with its upward movement, means for operating said machine in cooperative planned sequence to move the carton from the receiving platform by means of the pusher, glue the inner surfaces of said side flaps, deliver the same to the sealing station, fold the bottom side flaps against the end fiaps and squeeze the carton bottom in between the anvils and the compression assembly to seal the carton, and control means mounted for movement with said carton pusher assembly for cont-rolling the sequence of one complete cycle.

No references cited BERNARD STICKNEY, Primaiy Examiner.

Claims (1)

1. A CARTON BOTTOM SEALING MACHINE FOR PAPER CARTONS AND THE LIKE COMPRISING IN COMBINATION, A BASE STRUCTURE HAVING A MAIN LONGITUDINAL MEMBER AND A MAIN TRANSVERSE MEMBER, A VERTICAL TRANSVERSE FRAME ASSEMBLY HAVING VERTICAL MEMBERS SECURED AT EACH END OF SAID MAIN TRANSVERSE MEMBER AND A HORIZONTAL TOP PORTION CONNECTING THE TOP ENDS OF SAID VERTICAL MEMBERS TO FORM A RIGID FRAME, LONGITUDINAL GUIDE RODS MOUNTED ABOVE SAID LONGITUDINAL BASE MEMBER WITH SAID RAILS ALL IN THE SAME HORIZONTAL PLANE, A CARTON PUSHER ASSEMBLY MOUNTED FOR SLIDABLE CONTROLLED MOVEMENT ON SAID RAILS, A CARTON RECEIVING PLATFORM RIGIDLY MOUNTED ON SAID BASE TO RECEIVE A CARTON WITH ITS BOTTOM END FLAPS FOLDED INWARDLY AND RESTING ON SAID PLATFORM AND ITS BOTTOM SIDE FLAPS EXTENDED DOWNWARDLY AT EACH SIDE THEREOF, ADJUSTABLE GUIDE MEANS MOUNTED ON SAID VERTICAL FRAME MEMBERS FOR DIRECTING A CARTON INTO THE SEALING STATION WITHIN SAID FRAME, ADJUSTABLE GLUE MEANS FOR APPLYING AN ADHESIVE TO THE INNER FACES OF THE BOTTOM SIDE FLAPS OF A CARTON DURING PASSAGE TO THE SEALING STATION, A COMPRESSION ASSEMBLY MOUNTED FOR VERTICAL MOVEMENT BETWEEN SAID VERTICAL FRAME MEM-

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