US1968904A - Apparatus for lining can ends - Google Patents

Description

Aug. 7, 1934. F. c. B. PAGE 1,953,904

APPARATUS FOR LINING CAN ENDS Filed April B, 1933 2 Sheets-Sheet 1 INVENTOR flw,

2 Sheets-Sheet 2 F. c. B. PAGE APPARATUS FOR LINING JAN-ENDS Filed April 8, 195s Aug. 7, 1934.

Patented ug. 7, 1934 Y1,968,904 APPARATUS Fon LINING CAN ENDS Frank C. B. Pageyoyster Bay, N. Y., assigner to E. W. Bliss Company, New York, N. Y., a cor-L poration of Delaware Application Apro s. 1933, serial No. 665,081

vc Claims. (-01.113--805 lIn tin cans or receptacles for certain purposes it is customary to employ a lining within the can end or head of paper or other flexible material. For such lining various flexible sheet products paper or various iiexible materials in thev nature of lrns. For convenience the term paper will be used to designate any such iiexible sheet or film used as such lining. 110 It is desirable to form the head Aor can end with an incurved marginal flange or curledA edge and to fit the paper lining at curled edge, so that when theV head is seamed to the body of the can thev marginal portion of the paper lining willserve asa yielding packing for the double seam.

The present invention provides an improved apparatus for inexpensively applying the` linings t-o the `sheet metal heads. `This apparatus is of `that class having means for punching the lining from a sheet or blanlr` and applying it in relation to thehead, which operations may be performed at one stroke. The head is held inv exact position beneath a'cutting die; the paper 31s fed over the cutting die, a blank holder descends upon it to hold it marginally in place; a cutting punch then descends and cuts out the paper blank; the blank is then carried down within the die and received temporarily in a recess beneath, `and finally it is pushed down from said recess Yonto the head and its marginal portion is forced intothe exterior ilange of the head and within the curled edge thereof. On the return stroke ofthe punchmembers the head with its lining v-thussecurely attached is fed out and its place taken by the next headto be lined.

.For` accomplishing these punching and uniting operations a double-action press is usedhaving relatively movable concentric` punching members. Such press may` in general be ofthe character set 'forth in the patents of E. W. Bliss Company, No.

796,534, Auguste, .1905, and No. 859,977,` July 16, 1907; these Abeing named merelyl as instances `of a general. type of double-action press which, with proper modification of its punching members, "may be applicable for practicing the, present invntion. v- The accompanyingy drawingsillustrate the preferred construction ofa suitabledouble-action press and illustrate the steps in the process and the completed product.

Fig. 1 is a vertical mid-section through the bed, dievand punching members, showing lthe latter at the'. bottom ofthe stroke, having just finished .thelining operation.` L H are used, such as oiled or paraiiined or coated its margin within such correct Fig. 2 is a fragmentary plan tal section taken mainly von partly in horizonthe planes of the Fig. 3 is a'section similar scale, showing `the punching members at the instant of cutting the paper section being at right angles to Fig. l on a smaller blank, the plane of the to Fig. 1, so as to show the feeding of the paper to the die.

Fig. 4 is a half-section of shown in Fig. 1,- showing the punch members at certain of the parts topstroke.

Fig. 5 is a fragmentary half-section similar to Fig.

4, but showing the punch members on the down strokeY and while carrying the blank down within the die.

Fig. I6 is a diametrical section of the finished lined head or can end on a larger scale.

. Fig. 7 is an inverted plan of the head with its paper lining partly Fig. 8 is a fragmentary view on the same scale broken away.

asiFig. 6, showing the position of the punch members at `theend. of their down stroke.

Referring rst to Figs. 6 and 7, the head or can end A is shown as having a raised asurrounded by an annular raised portion b exterior to which is a flange middle portion c having an incurled marginal portion or edge d. For a cantop, the

position shown in Fig.

6 is inverted, the raised portion c in this case being a depressed portion.

For Fig.

a can bottom., theV arrangement shown in 6` is that which the parts would occupy in the finished can. For a can top having a friction lid'orcap, the latter (lettered B) is formed with aftapered portion wedged within a tapered neck ef formed `in the annular head A. This is the usual construction of friction top can heads. That side of the head which is toface the interior of the finished can is covered with the liner or lining C, `the middle portion of which rests against andissupported bythe raised portion a of the head, and the outer portions of which are pressed into approximate conformity with the outer annularrportions ofthe head, itsmarginal portion being entered down edge head. This is liners.` When the the can body the paper within and withinsthe flange c and its curled inside the curled edge d of the metal the usual Way of applying such4 head is seamed to the end of the curled edge d a packing between the flange c serves as be described. D is the E is the usual head slide thereof, and F the usual nch slide.y

Just over the bed D turns an intermittently .rotating dial or turntable G. This is 1110 successively into position, accurately centered bell Figs. 3 and 4 show` neath the punch members. the head to be lined thus positioned.

On top of the bed D and suitably fastened thereon above the top of the dial G is the cutting die H, its inner margin being of the contour of the paper blank to be cut. It is shown as supported within a bolster I fastened downto the bed by bolts 14. The opening in the cutting die is slightly` expanded downwardly, as shown at 14', Fig. 1.

` The head slide E carries the usual blank holder J and cutting punch K; the punch is tubular and conforms exteriorly to the openingin the die H; while the blank holder J encloses the cutting punch and in action comes down upon the top of the die H and forcibly holds down the paper blank thereon. In the construction shown the punch K is fixedly held in a bolster L fastened beneath theslide E; while the blank holder J is relatively movable, being guided by pins 15 and pressed down by springs 16. The pins 15 have heads sliding in recesses 1'7 in the bolster L and bottoming thereon on the upstroke so as to carry up the blank holder as shown inFig. 4. The springs 16 (of which three are shown) are guided in recessesV .1.8, press downwardly against the flanged portion of the blank holder and react upwardly against brackets 19 fastened down on top of the head plate M intervening between the slide E and the bolster L. (Or any other usual construction may be substituted).

The punch slide F carries beneath it in usual manner the punch body N which reciprocates within the bolster L andcutting punch K in usual mannen To its lower end is fastened an annular punch member or presser foot P and within this according to the shape orconstruction of the head A to be lined) are oneor more yielding pads.

, In the precise construction shown there is a 50l middle pad Q movable within a yielding pad member R, the outer marginal portion of which surrounds the pad Q and occupies the annular space between this pad and the punch member P. In theconstruction shown the member P is rigidly fastened to the punch body N; the pad member R is movablewithin it, being pressed down by a somewhat heavy spring 20; and the middle pad Q is movably attached within the member AR and pressed down by relatively lighter springs 2l. The middle pad Q corresponds to the raised portion a of the head; and the surrounding annular portion of the pad R corresponds in location to the annular raised portion b of the head A; and the punch member P corresponds in position to the annular flange c of the head. The contour of the member P is such that at the bottom of its stroke it ts around the annular member b of the head and conforms to its flange c entering within the curled edge d (all as shown in Fig. 8).

In operation the paper to form the lining C is fed as a strip 25 from atroll 26 by means of intermittently turning feed rolls 27 (Fig. 3). Fig. 2 shows the stripV 25 guided between flanges 28,

28 of a parallel paper guide 30. During the' paper feeding the punch members are elevated as in Fig. 4; in this position the pad member is held up by a pin key 31 seated in the punch head N and engaging a notch in a central stem 32 Xed to the member R.

The slide E descends in advance of the slide F, and its blank holder J which projects slightly lower than the cutting punch K rst engages the fed paper and clamps it against the cutting die with all the force of the springs 16. Instantly thereafter the further movement causes 'the punch K to cut through the paper and carry itA downward. into a recess which is shown as within the die'H, and in which recess it is temporarily held in theposition shown in Fig. 5. From this point in the stroke the slides E, F move nearly together' so that the punch members K, P, R and Q descend at substantially the same speed within the die H; they are shown about half way through this die in Fig. 5. The

cutting die K is stopped in the position shown in Fig. l, at the limit of down stroke of the slide E; thereafter the movement of the slide F continues and carries down the inner members P, R, Q to the bottom'of their respective strokes. Moving down together they carry the paper blank to the position shown in dotted lines at :t in Fig. 4, where it strikes the top of the middle raised portion a of the head A; at this point in the stroke it is clamped against a by the pad Q, with the pressure imparted by the springs 21. Following immediately behind the pad Q comes the pad member R which continues its descent until it is stopped by contact with the annular portion tially around this clamped portion. InstantlyV thereafter thel continued descentl of the punch member P brings it into contact with this marginal portion of the paper and it carries the latter down, conforming it to the tapered exterior of the portion b and forcing it down into the flange e of the head. In this downward movement the outer edge of the paper is directed inwardly by a coned portion 12 of the opening 12, as shown in Figs 3, 4 and 5. It will be observed that the paper lining is cut to a larger circle than the outer contour of the head so as to provide sufficient material for the downwardly conformed portion of the lining. Thus during this portion of the stroke the outer edge of the paper keeps traveling inward, and at the end ofthe stroke of P it is carried down against the bottom ange c and its outer edge is tucked within the curled edge d of the'head as shown in Fig. 8. l

Thereupon the ascending stroke of the punch occurs, lifting its members Q, R, P free from the head; as' these members pass up the slide E rises with a slightly delayed movement, lifting the cutting punch K out of the die H and finally lifting the blank-holder J off from the die, whereby the parts arel restored tol their initial position shown in Fig. 4. Thereupon the dial G turns one movement, Ycarrying the lined head beyond-to the position shown at 12a in Fig. 2-and bringing the next head into place beneath the punch members. Simultaneously the next feed of the paper strip 25 takes then repeated.

The machine thus described performs in one operation the two operations of (l) cutting out the paper blanks, and (2) uniting the paper blanks to the heads. Itv thus avoids the necessity of successively feeding individual paper blanks, 150 I place. The operation isv with the disadvantage of occasionally feeding two blanks together, which results in applying a double thickness of liner to the head.` The operation is as rapid as the speed at whichA the press can be driven. The coincident location of the cutting dies and uniting means for performing both operations at one stroke is not new per se and is not essential to my invention.

While the construction shown and described is preferred, it will be understood that this may be varied according to the particular construction and shape of the head to be lined and the particular material (paper or other sheet or film substance) which may be required for the lining. Accordingly the punch members P, Q, R may be Varied in proportions, number and arrangement, and in the downward pressure applied to the movable member or members, as may be requisite to adapt the mechanism to any required conditions.

I claim as my invention:

1. Apparatus for uniting a paper lining to a flanged metal head having a curled marginal edge, comprising a cutting die and punch, means for holding the head in place beneath such die, and punch members movable down within the cutting punch and die comprising a springpressed pad adapted to clamp the lining against the head, and a separately-movable annular punch portion movable down subsequently into the flange of the head and adapted to force the edge of the lining within the curled edge 0f the head.

2. Apparatus for uniting a paper lining to a flanged metal head, comprising a cutting die and punch, means for feeding the head and holding it in place, and punch members distinct from the cutting punch comprising a spring-pressed pad adapted to clamp the lining against the head, and a separately-movable annular punch portion movable down subsequently into the flange of the head and adapted to force the edge ci the lining within the curled edge of the head.

3. Apparatus for uniting a paper lining to a flanged metal head, comprising a cutting die and punch, means for holding the head in place, and

punch members distinct from the cutting punch,

and relatively movable with respect to each other, i

comprising an outer annular punch portion, and a spring pressed pad within it adapted to clamp the lining against the head, such annular punch portion being movable down into the flange of the head after the spring pressed pad has been arn rested and being adapted to force the edge of the lining within the curled edge oi the head.

4. Apparatus for uniting a paper lining to a anged metal head having an outer flange with a curled marginal edge, an inner raised portion, and an intervening annular portion, comprising a cutting die and punch, means for holding the head in place, and punch members distinct from the cutting punch, comprising a middle pad adapted to clamp the lining against the raised middle portion of the head, a separately-movable annular pad portion surrounding it, adapted `to press the lining against the intervening annular portion of the head, and an outer annular punch portion movable down subsequently into the flange of the head and adapted to force the edge of the lining within the curled edge of the head.

5. Apparatus for uniting the paper lining to a flanged metal head having a curled marginal edge, comprising a cutting die and punch adapted to cut out the paper lining, the die having a rc cess therein for temporarily receiving the cut lining, means for holding the head in place, and uniting means coincident with the head and movable to carry the lining from said recess against the head, comprising a pad for pressing the lining against the top of the head, and a separatelymovable annular punch portion, with means for moving it subsequently downward to force the edge of the lining against the flange of the head and within its curled edge.

6. Apparatus according to claim 5, with an annular holder for the material from which the lining is to be cut surrounding the cutting punch and movable in advance of such punch to clamp the material against the top of the cutting die.

FRANK C. B. PAGE.

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