US2545912A - Container spinning machine - Google Patents

Description

March 20, 1951 J. R. BAUMGARTNER ETAL CONTAINER SPINNING MACHINE 3 Sheets-Sheet 1 Filed June 4, 1949 Joizrz n March 1951 J. R. BAUMGARTNER EI'AL 2,545,912

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March 20, 1951 J. R. BAUMGARTNER ETAL 2,545,912

CONTAINER SPINNING MACHINE Filed June 4, 1949 3 Sheefcs-Sheet 3 1! m g ma Z 6 BY Jo/z/z 6 56M Patented Mar. 20, 1951 CONTAINER SPINNING MACHINE John R. Baumgartner, Milwaukee, Wis., and John G. Bell, Chicago, Ill., assignors, by mesne as signments, to Morris Paper Mills, Chicago, 111., a corporation of Illinois Application June 4, 1949, Serial No. 97,148

The present invention relates to carton forming machines and more particularly to a machine for forming beaded or rolled edges on cylindrical containers.

In manufacturing cartons such as containers for .ice cream or other semi-liquid products, it hasbeen found desirable to have either double or .single side walls formed from a single strip of relatively light paper. The ,upper, lower, or both margins may be rolled; one of them may be rolled inwardlyand the other outwardly. The covers of these containers are sometimes formed from a single strip of paper and have the upper margin rolled. I

When the side wall of the container and the rim of the cover are made from lightweight paper, it is somewhat of a problem to spin the roll on the margins without collapsing or damaging the side walls,,particularly where there is some weakness in the paper. This is particularly true where the spin is inwardly rather than outwardly. I

It is, therefore, an object of the present invention to provide a machine which may be readily adapted to spin either an inward or outward roll on containers and covers.

Another object is to provide a machine which is readily adaptable to spin the rims of containers of varying heights.

A further object is to provide a machine which will spin an inward roll on relatively light paper stock without damaging it.

Another object is to provide a machine which will spin a uniform inward or outward roll on containers and covers.

With these and various other objects in view, the invention may consist of certain novel features of construction and operation, as will be fully described and particularly pointed out in the specification, drawings and claims appended hereto.

In the drawings, in which like reference char-. acters are used to designate like parts,

Fig. 1 is a side elevational view of a machine embodying the invention, the side wall of the lower cabinet being removed to more clearly show the interior thereof;

Fig. 2 is a fragmentary plan view of the indexing latch;

Fig. 3 is an elevation in cross section taken on the line 3-3 of Fig.1;

Fig. 4 is a fragmentary elevation in cross sec-.

tion showing the retaining cylinder and arbor and a can clamp for holding the side wall of a container of 1555 height than shown inFig. 3;

2 Claims. (01. 93-365) Fig. 5 is an end elevational view angularly displaced ninety degrees from Fig. 1;

Fig. 6 is an enlarged fragmentary cross sec tion showing the spinner head in engagement with the upper portion of a container side wall on which anoutwarclroll has been formed;

Fig. '7 is an enlarged fragmentary cross section similar to Fig. 6, but showing an inward roll on the upper portion of the container wall and an outward roll on the lower portion;

Fig. 8 is an enlarged fragmentary cross section showing a spinner head forming an inward roll on the upper-edge of a container cover;

Fig. 9 is an enlarged fragmentary cross section showing a floating arbor in its uppermost position within a container wall and an improved spinner head for forming an inward roll; and

Fig. 10 is an enlarged fragmentary top plan I view of the spinner head shown in Fig; 9.

the table [2.

In the drawings, particularly Figs. 1 and 5, the invention is shown as embodied in a table or supporting surface l2 which has side walls or panels I4 for enclosing the under portion. Brackets [6 are secured to the upper surface of The spinning arm I8 is pivotally mounted at one end on the shaft 20, which is journaled in thebrackets I6.

The outer end of the spinning arm IB- is provided with a suitable bearing in which the spine;

ning shaft 22 is mounted. A gear 24 is securedto the upper end of the shaft 22 by the nut 26. A vertically extending bracket 28 is provided on the upper surface of the spinning arm [8 to which the electric motor 30 is secured, with the axis of rotation of its shaft 32 in a plane substantially normal to that of the arm [8. A reduction gear 34 is secured to the shaft 32 of the motor and is in mesh with the gear 24 on the spinningshaft 22 so that the speed of rotation of the spinning shaft is considerably less than that of the motor.

The spinner head 36 is threaded to the shaft 22. Spinner heads of the type shown in Figs. 1, 3, 6, 7 and 8 may'have the spinning grooves formed in detachable flanges 38 which are secured to the spinner heads by set screws 4!). The spinner heads or flanges may be quickly changed for various spinning operations.

A circular positioning device or turntable 42 is rotatably mounted on the table l2 which is provided with a journal 44 for supporting the shaft 46; The turntable 42 is provided with two diametrically opposed stations, each of which is horizontal position and when the turntable is each of two predetermined positions. These positions are determined by the indexing mechanism consisting of notches 48 in the turntable and a spring pressed latch 50 on the table I2 adjacent the perimeter of the turntable, as shown in detail in Fig. 2. The turntable is manually rotatable so that when the latch 55 is in engagement with one of the notches 48, one of the stations is in alignment with the spinner head and when the turntable is rotated 180, the other station is so aligned. It is obvious that more than two stations may be provided.

Mounted on the turntable 42 at each of the stations is a retainin cylinder 52 having a circumference substantially that of the interior of the container wall and having a height approximately that of the tallest container that is contemplated. As shown more clearly in Figs. 3, 4 and 7, a flange or ring 54 encircles the base of the retaining wall 52 and is provided with an interior annular offset portion 55 adjacent its upper margin in which the side wall of the container 56 is supported. As shown in Figs. 3 and 7. the ring is of such a height as to support a container wall of considerably greater height than that shown in Fig. 4. In Fig. 'I, the container wall has an outward roll on its bottom edge and this will not enter the offset portion 55 in the ring, with the result that the upper margin is presented at the proper altitude for spinning.

The upper margin would otherwise be too low if the bottom margin were already rolled. When the ring is in position, the space between the annular offset portion and the side of the retaining cylinder is such as to accommodate the side wall of the container prior to being rolled.

The same is true of the ring 58 shown in Fig. 9, which is a modified embodiment. The ring 58 is similar to the ring 54, but consists of two segments which are hinged together and have a snap clamp 60 at their free ends. The interior faces of the segments of the ring are provided with a plurality of studs 62 which engage in openings or depressions in the exterior surface of the retaining cylinder 52. These depressions are at predetermined levels, and the ring may be raised or lowered, depending on the desired height of the container, by merely unsnapping the clamp 60 and moving it so that the studs 62 engage the depressions in the retaining cylinder 52 at the desired level.

A pair of brackets 54 secured to the underside of the table I2 supports a self-contained gear box having an ecentric 56 at one end and a clutch 68 at the other, with the gear I intermediate. A connecting rod I2 is pivotally connected at one end to the eccentric E6 and passes through the table I2, having the other end pivotally connected to the under part of the spinner arm I8.

A pair of brackets I4 are secured to the under surface of the table and provide journals for the shaft I6 on which the worm gear I8 is nonrotatably mounted. The gear I8 is positioned to mesh with and drive the gear III. A pulley 80 is non-rotatably mounted on one end of the shaft I6.

A motor 82 is mounted below the table I2 on brackets 84, which are secured to the platform 86, and is provided with a pulley 88 which is in alignment with the pulley 80. A belt 90 operatively connects pulleys 80 and 88.

.A solenoid 92 is mounted on the bracket 94 secured to the platform 86. The solenoid plunger 96 is connected to the clutch actuating arm 98. The solenoid 92 is electrically connected by suitable wiring I00 to the pedal switch I02. The

clutch indicated generally at 58 may be of any type that will interrupt the drive from the worm gear I8 to the eccentric 56.

A bracket IE4 is secured to the upper surface of the table I2 between the rod I2 and the turntable 42. A pair of levers IE6 each has one end pivotally connected to the bracket I54 and positioned one in front of the other with their pivots in substantially the same horizontal plane. The opposite ends of the levers are pivotally connected to the can clamp I58. A lever H0 has its lower end pivotally connected to the can clamp I08 at approximately the same point as the forward of the two levers I56. The upper end of the lever H0 is pivotally connected to the spinner arm I8 at a point in substantially vertical alignment with the lower pivot of the rear of the two levers I06 when the spinner arm I8 is in a horizontal position. The lever III may be provided with a telescoping joint to impart a piston action and which may have a compression spring therein so that the can clamp I58 may engage the side wall of the container before the spinner arm has been completely lowered to a horizontal position. The compression of the spring within the joint urges the clamp against the container under pressure.

Fi s 3, 4, 6, '7 and 8 show more clearly the stationary arbor I I2 which consists of a ring having an outside circumference corresponding to the inside circumference of the retainer wall 52 and adapted to fit within it. It is also provided with an outwardly projecting annular flange which overlays the upper margin of the retaining cylinder 52 but does not project beyond the side of the retaining cylinder as the side wall of the container, after it has been placed around the retaining wall 52 and seated on the ring 54, projects above the arbor, as shown in Fig. 3, a sufficient amount for the top margin to be rolled doWn against the top surface of the arbor as shown in Fig. 7.

In Fig. 8 the flange of the arbor II4 projects beyond the retaining cylinder and is provided with an offset portion for seating the rim of a container cover IIB. The cover necessarily has a greater diameter than the container as it .fits over it in the present instance, and this arbor may be placed in the same retaining cylinder when spinning a roll on the cover.

It will be noted that in Fig. 6 the container wall has been inserted in the offset portion of the ring 54 and the spinning flange 38 .is forming an outward roll on the container, while in Fig. '7 the container wall has been inverted and the outward roll rests on top vof the offset portion 55 and the spinner head is forming an inward roll, the same size arbor being used in both instances. In Figs. 6, 7 and 8 the flanges 38 attached to the spinning head 36 have different spinning grooves, depending on whether it is an outward roll as shown in Fig. 6, an inward roll as in Fig. 'I or an inward roll on a cover as in Fig. 8.

The spinner head II8 shown in Figs. 9 and 10 is provided with peripheral rollers I20 rather than detachable flanges as shown in Figs. 6, 7 and 8. The spinner head shown in Figs. 9 and 10 is particularly adapted for spinning an inward roll. The rollers I20 are provided with grooves I2! for engaging the rim of the container and are rotatably mounted on the spindles I23 which are at an upward angle from the plane of the spinner head I I3. The rollers freely rotate in contact with the container rim when the spinner head is lowered and rotated.

A floating arbor is shown in Fig. 9 and consists of a f oating mem er I40 and a stationary mem-.

her I42. The stationary member I42 is similar to the arbor II2 shown in Figs. 6 and '7 and consists of a ring adapted to flt within the retaining cylinder 52-and having an annular flange overlaying the top of the retaining cylinder and supported by it. The floating member I40 consists of a disk having a circumference corresponding to that of the retaining cylinder 52. The under face of the member I48 and the upper face of member I42 are provided with a plurality of oppositely disposed recesses I44 for seating the compression springs I46. The under surface of the member I40 is provided with a boss I48 to which the depending latch I50 is pivotally secured. The under surface of the fixed member I42, has a crosspiece] 52 secured to it by screws I54.

The latch I50 has an enlarged base portion I55 having shoulders I56. The crosspiece I52 has a circular opening in alignment with the latch I50 of suflicient size to permit passage of the base I55 of the latch therethrough. The base has a stop I58 at its lower end which limits the upward movement of the latch by engaging the crosspiece I52. A tension spring I60 is secured at one end to the stop I58 and at the other to a screw I54. The stop I58 may be threaded to the base I55 of the latch so that the upward movement of the arbor may be limited to a predetermined height by screwing or unscrewing the stop. When the spinner head I I8 is lowered and the rollers I20 engage the upper margin of the container, it engages the upper surface of the arbor I40 and moves it downward against the compression of the springs I46. The latch member I50 moves downwardly through the opening in the crosspiece I52 and as the base I55 moves beyond the opening in the crosspiece I52, the spring I60 moves the latch member sideways so that the shoulder I56 is against the under surface of the crosspiece. As the spinner head is raised after spinning an inward roll on the container side wall, the arbor I40 is held in its depressed condition by the latch I50.

In operation, the desired spinning flange is placed on the spinner head 36 and secured by screws 40. The flange may be such as shown in Fig. 6 for an outward roll, Fig. 7 for. an inward roll or Fig. 8 for a cover. If a spinner head such as is shown in Figs. 9 and is used, it is screwed directly to the shaft 22.

A container side wall blank is placed around each of the retaining cylinders 52 with the lower edge resting on the ring 54. The turntable 42 is in a position so that one of the containers 56 is centered under the spinner head and the latch 50 is in engagement with one of the notches 48.

The motors 30 and 82 are then turned on sepa-.

rately or together by any suitable switch and continue running while the machine is in use. The motor 30 through shaft 32, gears 34 and 24 and shaft 22 rotates the spinner head 36.

The motor 82 through pulleys 88 and 80 and belt 90 rotates the shaft I6 and worm gear I8 which rotates gear 10. When the clutch 88 is-in disengaged position, the motion is not transferred to the eccentric 66. on the pedal switch I02 energizes the solenoid 92 which causes the plunger 96 to move and with it the clutch actuating arm 98 which moves the clutch to engaged position and the rotary motion of the gear I0 is imparted to the eccentric 66 which, at the start, is in its uppermost position. In this position, the connecting rod 12 is at the top of its stroke and the spinning arm I8 is in a raised position. The lever III!v Downward pressure holds the can clamp I08 away from the container wall 58.

As the eccentric 66 rotates, the connecting rod 12 lowers the spinning arm I8 and the lever IIO moves the clamp I08 into engagement with the container wall 56. The rotating spinner head is lowered and spins a roll on the upper margin of the container wall. As the eccentric moves upwardly, the spinner head is raised and the clamp I08 moves away from the container wall. The pedal switch I02 may then be released and the solenoid thendisengages the clutch 68. The latch 50 is then moved outwardly from the notch 48 while the turntable 42 is rotated so that the other container wall is centered under the spinner head. The pedal switch may then be operated and the cycle repeated. During the next cycle, the completed container wall may be removed and a new one placed around the retaining cylinder.

When a floating arbor such as is shown in Fig. 9 is used and an inward roll has been formed on the container, the arbor I40 does not move upwardly under pressure of the springs I46 as the spinner head H8 is raised since it is held in a depressed position by the latch I50. Otherwise, the upper surface of the arbor I40 would engage the beaded roll and lift the container wall 56 upwardly with it, or if the clamp I08 is not in a released position as the spinner head moves upwardly the arbor would tend to unroll the inwardly rolled edge of the container which is still held by the clamp.

When a floating arbor such as shown in Fig. 9

is used, it is immaterial that clamp I08 is not released before the spinner head moves upwardly, since the arbor remains in a depressed position by the latch I50 and spring I60 until manually released. This type of arbor has the further advantage of adapting its position to that of the spinner head as it is engaged by it; the spinner head, when it first engages the edge of the container, may not be in a horizontal position so that it contacts the edge of the carton gradually as it is lowered. As a result: the arbor will be tilted accordingly by the spinner head. While certain preferred embodiments of the invention have been shown and described, it is to be understood that these are illustrative only, as it is capable of variation to meet differing conditions and requirements, and such modifications are contemplated as come within the spirit and scope of the appended claims.

We claim:

1. In a device for forming rolled edges on containers, a spinner head, a motor for rotating said spinner head, a vertically pivotal arm for rotatably holding said spinner head and supporting said motor, a rotary bed having a plurality of stations for mounting said containers, said stations being selectively alignable axially of said spinner head when said arm is in a substantially horizontal position, a clampoperatively connected to said arm for engaging a container when said arm is in a substantially horizontal position and said container is in axial alignment with said spinner head, an eccentric for raising and lowering said arm and a motor for driving said eccentric.

2. In a device for forming rolled edges on containers, a spinner head, means for rotating said spinner head, a table, a bracket supported on said table, a supporting member for raising and lowering said head pivotally connected. to said bracket adjacent one end, a retaining cylmeans REFERENCES CITED The. following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 941,085 Marthinson Nov. 23, 1909 942,890 Dill V Dec. 14, 1909 1,155,787 Bohlman Oct. 5,1915 1,283,786 Janisch Nov. 5, 1918 1,401,132 Bond Dec. 2'7, 1921 2,238,330 Koch Apr. 15, 1941

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