US2465253A

US2465253A - Machine for simultaneously threading, beading, and knurling closure caps

Info

Publication number: US2465253A
Application number: US733521A
Authority: US
Inventors: Joseph M Montelione
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-03-10
Filing date: 1947-03-10
Publication date: 1949-03-22
Anticipated expiration: 1966-03-22

Description

Mch l ii 1949. J. M. MONTELIONE 2,465,253

MACHINE FOR SIMULTANEOUSLY THREADING, BEADING, AND KNURLING CLOSURE CAPS 2 Sheets-Sheet 1 Filed March 10, 1947 INVENTOR. JOSEPH M. MO/W'fL/O/Vf.

ATTORNEK h J. M. MONTELIONE 2,465,253

MACHINE FOR SIMULTANEOUSLY THREADING, BEADING,

AND KNURLING CLOSURE CAPS Filed March 10, 1947 2 Sheets-Sheet 2 INVENTOR. I JOSEPH M. MONTEUONE.

ATTORNEY Patented Mar. 22, 1949 MACHINE FOR SIMULTANEOUSLY THREAD- ING, BEADING, AND KNURLING CLOSURE CAPS Joseph M. Montelione, Brooklyn, N. Y.

Application March 10, 1947, Serial No. 733,521

3 Claims.

This invention relates to improvements in machines for manufacturing closures, and more particularly for forming metal screw closure caps and similar articles.

Screw closure caps are usually formed by first stamping flanged blanks from lacquered or printed sheet metal, with a subsequent rolling operation to provide a thread and knurling edge in the skirt of the cap.

Most of the devices of this kind consist of complicated mechanism, including the feeding of blank caps and the removal of the finished cap. Wear of the rolling elements is also not taken care of, requiring extensive replacement of worn parts.

It is an object of this invention to provide a simple, practical and efficient device for forming screw-type metal closure caps from blank caps, and wherein the threading, knurling and beadforming of the cap is performed simultaneously.

Still another object of the present invention is to provide a machine for simultaneously forming knurling, a thread, and a crimped or beaded edge, wherein the blank cap is fed from a hopper onto one rotatable member of two geared continuously rotatable members, and simultaneously threaded, knurled and beaded by cooperable action of both rotatable members; further objects being in the provision of the novel feeding means and in designing the machine such that the cap will be placed on and removed from the said one rotatable member in one revolution thereof.

It is another object of this invention to form the knurling by two cooperating rotatable parts which also act as gears to drive the cap.

It is another object of this invention to design the machine so that it can be used with any conventional blank feeding hopper or other feeding mechanism.

It is a still further object of this invention to provide a metal cap threading machine with dies, which can be readily adjusted for variations in thickness of material or for wear.

It is another object of this invention to provide a metal cap thread rolling machine simple in design, thus cutting the cost of the machine and making its various parts readily accessible for repair and replacement.

This invention accordingly consists in the features of construction, combination of parts and in the unique relations of the members and in the relative proportioning and disposition thereof; all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they may embody the same by the numerous modifications in structure and relation contemplated by this invention, drawings depicting certain forms of the invention have been annexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts throughout all the views, of which:'

Fig. 1 is a top plan view of a stamped cap blank.

Fig. 2 is a cross-sectional view thereof.

Fig. 3 is a side elevational view of a finished cap.

Fig. 4 is a top plan view of Fig. 3.

Fig. 5 is a side view of the machine before rolling operation. v

Fig. 6 is an end view of Fi 5.

Fig. '7 is an enlarged view of the rolling mechanism shown in Fig. 5, with the chute removed.

Figs. 8 and 9 are similar views to Figs. 5 and 6 but with the mechanism in operative position.

Fig. 10 is a diagrammatic view of the rollers ready to start the rolling operation.

Fig. 11 is a diagrammatic View of the rollers at the beginning of the rolling operation.

Fig. 12 is a diagrammatic view of the rollers at the completion of the rolling operation.

Referring now to the drawings, the blank cap as shown in Figs. 1 and 2 consists of the cover portion l5, the skirt portion It and the flange ll. After the rolling operation has been completed as later on described, the same cap will appear as in Figs. 3 and 4, in which the skirt lS'has been provided with the thread I8 and the knurled edge l9, While the flange I'I has been rolled or crimped as at 2B.

The machine 2! consists of the frame 22 having an extension 23, secured by means of screws 24. This extension 23 supports the slide 25, which acts as a feed of blank caps 26 into the rolling mechanism 21.

The slide 25 has the track 28 in which operates the pusher 29, having the recess to accommodate one cap 3| fed into the rolling mechanism 21. The caps 26 reach this pusher 29 by means of a chute 32. Mounted in the frame 22 is a drive shaft 33, which connects at its free end 34 to some driving means such as a motor (not shown). A cam 35 is secured to the shaft 33 by means of a key 36 at one end of the frame 22, while the gear assembly 31 is mounted at its other end. The gear assembly 31 comprises the driving gear 38 and the companion gear 39 mounted on shaft Bil. Numeral designates a rolling die, having on its surface the female thread portion 4| for forming the thread l8, the knurled portion 42 for forming the knurling l9, and the curling groove 59. (See Fig. '7.) i

This die 40 is in the form of a segment (see Figs. 10 to 12 inclusive) and is adjustably 'secured to the larger gear 38 by means of the screws 43 sliding in the adjusting slots 44. A block 45 is secured to the gear 38 by means of screws 46. Screws 4! in the block 45 bear against the segment 40, thus permitting free adjustment, after which the segment is tied down with the screws 43. The segment 40 is preferably slightly less than one half of the gear 38. This gear and die assembly may be conveniently referred to by 21a of the rolling mechanism 21. The complementary gear 39 has mounted thereon, the complementary die member 48, having the male thread portion 49 for forming the thread l8, the knurled portion 6| for forming the knurling l9, and the male curling portion 62 for forming the bead 20. This complementary gear and die assembly may be conveniently referred to by 211) of the rolling mechanism 21.

Riding and controlled on the cam 35 is a roller 52 mounted on the upper end of arm 59. The lower end of arm 59 is secured to a square shaft '5! slidably mounted in the frame 22. Roller 52 is held in engagement with the surface of cam 35 .by means of a tension spring 53. At the other end of the square shaft 51 is secured an arm 54 to which is fixed the blank cap pusher 55. Swingably mounted on the gear 38 at 56 is an arm 57, the other end of which connects at 58 with the pusher 29.

The operation is as follows:

A blank cap 3| reaches the pusher 29 from the chute 32. During rotation of gear 38, the pusher 29 by means of the arm 51, will slide and pushes blank cap 3| towards the rolling mechanism 31. Pusher 55 will now transfer the blank cap 3| to the small die 48. Up to this point the segment 40 has been only approaching the smaller die 48 as in Fig. 10. Now the rolling operation begins, causing simultaneous beading of the skirt edge 20 by means of the curling groove 59,

threading of the skirt l6 by means of the threading die-portions 41, 49, and knurling of the skirt by means of the knurled die-

portions

42, 6|. During this rolling operation, arm and consequently pusher 29 move downwardly thus permitting another blank cap 26 to locate itself in the recess 30 of the pusher 29, ready to be worked upon. At the same time, while this rolling operation is being performed, cam 35 is causing arm 50 and consequently pusher 55 to move into the position shown in Fig. 5. The finished cap will fall oif by gravity or may be blown off by air pressure or other means (not shown); the next blank cap 26 will take its place, sent on its way by pusher 29, and pusher 55 will place the blank cap 26 on the smaller die 48 to be worked upon by the rolling mechanism 21.

It is evident that the knurled die-

portions

42, 6!, act as gears to drive the cap being worked upon; and that this cap goes on and oif the small roller 2127 during one revolution. In the embodiment shown in the drawings, the roller or gear shaft 33 and 69 are fixed against endwise movement. It is preferable to make the gear ratio of

gears

38 and 39, four to one.

It is thus seen that the present invention comprises a simple, and practical machine for manufacturing closures for bottles, which will be safe, eflicient, and reliable in use and operation. The device comprises relatively few parts which may be inexpensively manufactured and assembled and which is well adapted to accomplish, among others, all of the objects and advantages herein set forth.

Without further analysis the foregoing will so fully reveal the gist of the invention that others by applying current knowledge can readily adapt it for various applications without omitting certain features that from the standpoint of the prior art fairly constitute essential characteristics of the generic or specific aspects of this invention, and, therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalency of the claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent. is:

l. A machine for simultaneously threading, beading and knurling caps, comprising cooperating rotatable devices, one of said devices receiving the cap blank, the other of said devices being of greater diameter than the said one of said devices; said devices having cooperating threadforming, knurl-forming and curling portions, said thread-forming, knurl-forming and curling portion on said other of said devices comprising a segment, each of said devices having a gear, the gear on said other of said devices being larger than and driving the gear on said one of said devices, driving means for said larger gear, cam means being operable by said driving means for said larger gear, means for feeding the caps to said one of said devices, said means comprising pushers operable consecutively, one of said pushers being movable by said larger gear, and the other of said pushers being operable by said cam means.

2. A machine for simultaneously threading, beading, and knurling caps, comprising cooperating rotatable devices, one of said devices receiving the cap blank, the other of said devices being of greater diameter than the said one of said devices; said devices having cooperating thread-forming, knurl-forming and curling portions, said thread-forming, knurl-forming and curling portion in said other of said devices comprising a segment, each of said devices having a gear, the gear on said other of said devices being larger than and driving the gear on said one of said devices, driving means for said larger gear, cam means being operable by said driving means for said larger gear, means for feeding the cap to said one of said devices, said means comprising a chute having a lateral extension adjacent said cap receiving device, and also comprising two pushers operable consecutively, one of said pushers being guided in said extension and operable by said larger gear, and the other of said pushers being operable by said cam means,

3. A machine for simultaneously threading, heading, and knurling caps, comprising cooperating rotatable devices, one of said devices receiving the cap blank, the other of said devices being of greater diameter than the said one of said devices; said devices having cooperating threadforming, knurl-forming and curl-ing portions, each of said devices having a gear, the gear on said other of said devices being larger than and driving the gear on said one of said devices, driving means for said larger gear, cam means being operable by said driving means for said larger gear, means for feeding the cap to said one of said devices, said means comprising pushers operable consecutively, one of said pushers being movable by said larger gear, and the other of said pushers being operable by said cam means.

JOSEPH M. MONTELIONE.

(References on following page) Name Date Bell Dec. 3, 1935 Huntsman July 5, 1938 Williams Feb. 21, 1939 Merolle June 10, 1941 Barrie June 3, 1947 FOREIGN PATENTS Country Date Great Britain Feb. 17, 1906