US1646992A - Packing and packing-forming machine - Google Patents

Description

' 1 4, 2 Oct. 25,1927. I M. M CODY ,6 699 PACKING AND ncxmq FORMING MACHINE Filed April 28. 1926 5 Sheets-Sheet 1 Oct. 25, 1921. 1,646,992

M. M. CODY PACKING AND PACKING FORMING MACHINE Filed April 28. 1926 5 Sheets-Sheet 2 8i fjnvefl/icr' ZTGWM' Oct. 25, 1927. M. M. CODY mcxme AND moxme Fommze momma 5 Sheets-Sheet 4 Filed April 28. 1926 Oct. 25, M. M. I PACKING AND PACKING FORMING MACHINE Filed April 28. 1926 5 Shets-Sheet 5 Patented Get. 25, 1927.

MARTIN M. CODY, OF CHICAGO, ILLINOIS,

ASSIGNOR TD CRANE PACKING. COMPANY,

A CORPORATION OF ILLINOIS.

PACKING AND PACKING-FORMING MACHINE.

Application filed April 28, 1926.

This invention relates to improvements in machines for forming packing, and to the packing produced thereby.

The object of the invention is to provide an improvement on the machine disclosed in my co-pending application, Serial No. 730,043. filed August 4, 192 1, for automatically forming endless packing rings.

A more specific object is to provide a ma chine havin r automatic cut-off means which may be adjusted whi'le themachine is operating to compensate for variations in the thickness of the stock from which the rings are. formed.

Another object is to provide improved mechanism for diepiessingthe formed rings and thereafter automatically discharging them from the 'die.

A further object is to provide an improved packing ring. I

Other objects relate to various features of construction and arrangement of parts, which will become apparent from a consideration of the following specification and- 5 accompanying drawings, wherein Figure 1 is a front elevation of my improved machine.

Fig. 2 is a rear elevation thereof.

Fig. 3 is a sectional plan view taken approximately on line 3-3, Fig. 1.

'7 Fig. 1 is a sectional plan view taken on line 4 4, Fig. 1.

Fig. is a plan view of the feeding rolls and winding spindles.

Fig. 6 is a horizontal sectional detail view showing the cut-off mechanism.

Fig. 7 is a horizontal sectional view showing the cam mechanism and adjusting means for operating the cut-off device.

Fig. 8 is a detail view showing the cam mechanism for controlling the feeding; rollers. i

Fig. 9 is a broken detailed vertical sectional view of the stripper.

10 is a detail view of the die-pressing apparatus.

Fig. 11 illustrates the means for lifting the completed packing ring from the die and the discharge mechanism associated. therewith.

F in; 12 illustrates the relative arrangement of the strips of material from which the packing ring is formed.

F ig. 13 is a perspective View of a ring Serial No. 105,143.

after being die-pressed and discharged from the machine.

The invention is characterized by the provision of means for winding a strip or strips of material, such as lead foi'l, into a packing ring, automatically interrupting the feeding of the foil at the proper time and actusiting a cut-off mechanism to sever the material of the ring, thereafter stripping the ring. from its spindle and inserting the same into a suitable die, pressing the same by suitable punch press'mechanism to compress the ring and give it the proper internal structure and external size and shape, and thereafter discharging the formed ring from the die into a delivery chute, or the like.

Power is applied from any suitable source to shaft 10, which, through bevel gears 11, ll, drives vertical shaft 12 upon which is mounted the large gear 13 which meshes with pinion 14 mounted on shaft 15 carryinp; on its lower end gear 16, one of a train of gears. Thegear train is best illustrated in Fig. 1 and comprises, in addition to the gear 16 mentioned, a gear 17 in mesh therewith which also meshes with the gear 18 mounted on the shaft 19 which carries one of the feed rolls 20. Gear 18 meshes with pinion 21 which is mounted on shaft 22 on the lower end of which shaft is mounted a second feed roll 23. The shaft 22 is mounted, in arm 24 which is non-rotatably secured to the lower end of shaft 25. To the upper end of shaft 25 is secured the arm 26 carrying roller 27, which co-operates with cam 28 mounted above g-ea1-13 on shaft 12. It will be seen that when the roller 27 is moved by the re-entrant cam surface of cam 28 through arm 26, it will rock shaft 25 and arm 24, thereby moving the feed rollers 23 counter-clockwise, as viewed in F ig. 6, thus interrupting the feeding ofthe material to the rotating spindle, hereinafter referred to.

A table or support 29 is provided, upon which may be mounted one, or preferably two rolls of foil and an intermediate roll of paper, which latter has been treated previously with a' lubricant, such as tallow and graphite. One of the rolls of foil is indicated at 30, in Fig. 1. The three strips of material are passed in contact with the tension roller 31, between the feed rollers 20 and 23, through guide 32 between the fluted conditions remaining the same.

rollers 33 and 34, around the latter of which the material is wound. The rollers 33 and 34 tend to mesh sufiiciently to cause the material to be depressed into the corrugations of the roller 34. Roller 33 is positioned somewhat beyond roller 34, as shown 1n Figs. and 6. A. guide 35 is positioned'ad jacent and beyond the roller 34, and has a curved surface, as shown in Fig. 6, which turns the free end of the strips of material over into contact with'the corrugations of the roller, whereby the roller upon rotation :"Will cause the said free end to be carried around the roller and wrap'pedupon itself,

as will be seen. The roller 33 is-mountedon' a shaft 36 carried by pivotedarm 37 which isimoved to the'left, as viewed in Fig. 6, bya spr1ng38. This construction permits relativelateral movement of the rollers 33 and 34 as the size of the packing ring lncreases and, at the same time, provides suflicient pressure for forming uniform rings.

The cut-off 'll'lQOllflIllSHl comprises a knife 39 carried on arm 40 which 15 secured to a vertical shaft 41. To the upper end of shaft 41 issecured arm 42 carrying a cam roller 43 on "its free end, whlch roller coacts with cam 44 secured to shaft12. When the roller 43 drops into thedepression in the cam 44, knife 39' will be moved about the shaft 41 as a pivot, in counter-clockwise direction, as viewed in Fi 6, to sever the strips .of'material, as will be clearly understood. The

Q arm 42 is adjustably secured to a block 45, as: shown in Fig. 7,'whereby rotation of the threaded stem, 46 by means of'itssknurled head 46 will adjust the'roller 43 for 'co-ordi nating the actuation of the knife 39 with reference to the other steps 1n the formlng of the rings.

It willbe seen that the thickness of: the

ring depends on the length of the strips of 7 material which. are cut off. WVhen this material is of uniform thickness, the finished rings; will all be of the same thickness, other However, in practice, -it develops that the thickness of. the stock varies considerably, particularly the thicknesssofthe metal foil, and therefore, the finished rings would not be uniform un lessthe' amount of material of which they are composed can be varied. Another variationzis caused by the coating on the strip of paper,,whichif partially dry due to an interruption in the operation of the machine, will be thicker than when the machine is operatin continuously. In either case, the

' operator may compensate for these irregularitics and insure substantial uniformity in the 'productby varying the length of the strips which make up the spiral rolls. This adjustment may -be made by turning the knurled head 46 'while the machine is operating.

provided with a roller The spindle 34 is secured to, or integrally formed with a vertical shaft 47 to the upper end of which is secured a, gear 48 which meshes with gear 49 carried on a shaft 50 which is driven by 51 in mesh with the large gear 13. The size or diameter of the packing rings is determined by the ratio of the gears 48 and 49, said gears being readily detachable from the shafts 47 and 50, respectively, whereby other gears of different ratios may be substituted when rings of different sizes are desired to be formed.

After thecut-off mechanism has been actuated, as abovedescribed, the packing ring is stripped from the spindle by means of a stripper sleeve 52 having at its upper edges a pair of spaced horizontal flanges 53, within, which slide the studs 54 carried by the yoke shaped member 55. The yoke has an arm 56 which'is secured to a shaft 57 secured to lever 58 which is suitably connected by' means of a head 59 and link 60 to the member 61 which coacts with cam 62 mounted on shaft 63, which is positioned adjacent the lower portion of the machine. It will be seen when the member 61 is lifted vertically, as shown in Fig. 2, that such motion will be transmitted by means of link 60, head 59, lever 58, shaft 57yand arm 56 to'yoke 55,

whereby the stripper sleeve will be moved downwardly sufliciently to slide the packing ring from the spindle 34. The shaft 63 has mounted thereon a sprocket wheel 64 by means of'whi ch and the chain 65 said shaft is driven from the sprocket 66 carried on shaft 67. A chain 68 forms the driving con nection between shaft 67 and shaft 10; as

shown in Fig.2. i

As above mentioned, the downward movement of stripper sleeve 52 moves the formed packing ring into the die 69 which, by'means positioned immediately below the spindle'34 dur ng the stripping operation. The die 69 has a vertical opening corresponding to the hereinafter described, will be concentrically size of the packing being made, and in the lower portion of the opening is mounted a discharge sleeve 70. Concentrically mounted in the openlng of thedie is astud 71 around which, into the circumferential opening, the packing ring is forced bythc stripper sleeve 52.

(See Fig.9.).

The die 69 is mounted in guideways 72 7 cam 79 is so arranged and timed that the die 69 will be immediately below the spindle 3a when the stripper sleeve 52 moves down wardly. When the packing ring has been forced into the die chamber, around stud 71 by the stripper sleeve 52, the cam 79 will cause the die 69 to move to the right, as viewed in Fig. 1, toa position immediately below the plunger 80- of the punch press, which is indicated, generally, by 81. (See Fig. 10.)

The punch press 81 may be of standard construction and need not be explained in detail. It will suffice to state that the plunger 80 is actuated by connecting members 82 and 83 from the shaft 67. The actuation of the press is so timed that when the die 69, which in Fig. 1 is shown in the intermediate position, has been moved into allnement with the plunger 80, said plunger, which 13 of the sleeve type, will be forceddown upon the packing in the die chamber, which is indicated by numeral 69. This action of the plunger compresses the packing, giving it the desired shape and size, and in reducing the length thereof tends to plait the layers of the same, as will be clear- After the plunger 80 has been retracted from the die, the completed packing ring will be forced upwardly from the die chamber 69 by means of previously mentioned discharge sleeve 70. This sleeve 70 is reciprocable vertically in the die chamber by means of the rods 84, which pass through suitable openings in the base of the die member 69. The rods 84 are secured at their lower ends to the plate 85 which is horizontally sl. idable in the head 86 carried by rod 87 which is connected by a link 88 to the lever 89, pivoted at 90, to the depending bracket 91. The opposite end of lever 89 carries a roller I 92 which coacts with the second box cam 93 mounted on shaft 63. Rotation of shaft 63 by means. of cam 93 will actuate lever 89 to lift the shaft 87 and head 86 and cause the rods 84. -to move the discharge or extract ng sleeve upwardly, whereby the packing will be moved out of the die chamber 69. When the packing has thus been extracted, it is kicked into a discharge chute 94 by means of a reciprocating bar 95. The bar 95- slides through a suitable guide 96, and at its rear end is pivoted to the arm 97, mounted on rock shaft 98, which is suitably journaled in the frame of the machine. The shaft 98 has secured thereto a second arm 99 pivoted to link 100, which in. turn is pivotally connected to lever 101. This lever 101 is pivoted at 102 to a suitable support 103 carried by the frame of the device, and at its rear end is attached to a spring 104 which tends to move the lever in a counter-clockwise direction, as viewed in Fig. 2. The opposite end of the lever 101 carries a roller 105 which bears. against the cam 106 mounted on shaft 10. It will be seen that when the shaft 10- rotates to bring the cam depression into position where the spring 104 can actuate the lever from the position shown in Fig. 2, that link 100 will move upwardly and carry with it the arm 99, thereby causing shaft .98 to rock. Shaft 98 will cause the arm 97 to move the kick-off bar 95 to the right, as viewed in Fig. 3, whereby the fin ished packing ring will fall into the discharge chute 94 and from the same into a suitable receptacle. It will be seen that the machine being timed in such manner that the various steps above described take place in proper sequence, the manufacture of end less packing rings can very expeditiously be carried out and with minimum attention.

The packing itself is composed of material which has been bent back and forth while it is being wound as a spiral, and which when compressed axially in the :die afterwards, is compressed back and forth in a direction at right angles to its initial back and forth movement. This construction insures ready further compressibility .endwise and inward and outward radial expansibility. These characteristics are important when the pack ing is installed, as in the case of condenser tube packing for example, where it is necessary to expand the packing to insure an air tight sliding joint without deforming the tube, or causing what is known as necking. Such condenser packings are tightened initially by a caulking tool, using comparatively light blows, and may be held in place by a screw-threaded ferrule which will cause further endwise compression of the packing, resulting in a tendency to lateral expansion, although in some cases the ferrules are dispensed with.

Although I have shown one embodiment of in improvements for the purposes of illustration, it will be apparent that various changes may be made without departing from the spirit of my invention, and I do not wish therefore to be restricted to the embodiment herein shown and described, except where limitations thereto appear in the appended claims.

What I claim is:

1. A machine for forming packing rings comprising a rotatable spindle upon which the packing material is wound, a cut-off device timed to sever the material when the formed packing ring is of the desired size, a die, means for stripping said ring from said spindle and inserting the same in said die. a press adaptedto compress said ring in said die, means for extracting the compressed ring from the die, and means for clelivering said ring to a discharge chute. V

A machine for forming packing rings conun'ising a spindle upon which the pack ing material is wound, a cutoff device asso-' ciated therewith comprising a cam controlled blade forsevering said packing material at predetermined lntervals, means tor compressing theformed ring axially to'r'educe it to. predetermined size and shape, and means for removing the compressed ring automati- I (rally from the machine 3. A machine for forming packing'rings for compressing the formed ring axiallyto reduce it. to predetermined size and shape,

7 re said arm and head. n ad usted relation,

and means for removing the compressedring automatically from the machine.

4. A machine for forming packing rings comprisingmechanism for forming rings of strips of material, means for severing said material at predetermined intervals, said means comprising a pivoted blade, a cam, a cam actuated arm for actuating said blade, adjusting'mca-ns for coordinating the cutoff means with said forming mechanism, said adjusting means comprising "a threaded member engagmg said arm, means for compressing the formed ringaxiallyto reduce:

its to predetermined size and shape, and means for removing theycompressed ring automatically from the machine.

5. A machine for forming packing'rings comprisinga spindle upon which the packing-material is wound, a cut-oii' device associated therewith comprising a blade, a rocker. shaft 'upon'which said blade is mounted, .a head secured to said shaft and movable therewith, a cam, a cam actuated arm operatively secured to said head, a threaded member for adjusting said arm relatively to said head, means for compressingthe formedring axially .to reduce it to predetermined size and shape, and means for removing thecompressedring automatically from the machine.

G LA machine for forming packing rings comprising a spindle upon which the packing material is wound, a cut-oil? device associated therewith comprising a bladefa rockerwsha'ft upon" which said blade j is mounted, a head secured to said shaft and movable therewitlnza cam, a camactuated arm voperatively secured to said head, a threadedmember for adjusting said arm i'vely to said l'iead,-me ans for locking means-for compressing the formed ring axially to reduce it. to predetermined size and shape, and means ttor removing the com-';

pressed ring automatically from the ma-i chine:- r

' 7. A machine-tor forming packing rings comprising rotatable forming means, a die, mechan sm ;for stripping said ring from the forming means and inserting "the same in said d1e,-sa1d die comprising an annular chamber, a press for compressing the ring in said chamber, and ineansqfor e ectmg the compressed ring l'rom said chamber.

comprising a .die having an annular chain 10 8. Mechanism for treating packing rings,

her into which said rings are adaptedfto be inserted, means for compressing airing in said chamber, and means for ejecting-the compressed ring theretrom in a direction opposite to the direction of insertion, said means comprising an annular sleeve slidable mtosaid chamber. a w

9. Apparatus of the class described com-- prising packingring forming member, a

from said forming means and inserting 'it' in said die, and means for .reciprocating said die from ringrecelvmg to compressing positlons, and vice versa, in tuned relation with respect to the actuation of said stripping and compressing means v stripper, "a die, means for. actuating said ripparatus of the class described comprising a packing rmg formmg meansyai reciprocable die, means forstripping a ring from said forming means and inserting it in said die,.meansv tor reciprocating said-die i from. ring receiving to compressing posirespect to the actuation of said stripping .tions, and vice versa, intimed relation with i a and compressing means, and means for ex tracting the compressed ring from theidie.

12. Apparatus of the class dGSCIibQClCOIIb.

prising a packing ring forming means,-a 'IQCIPIOCLlOlQ die, means forstripping airing from saidtormmg means and inserting it in saidldie, means for reciprocating said die 7' from ring receiving to compresslng positions,

to the actuation otsaid stripping and com-,

a 13. Apparatus of the class described comprising ring forming means, a die having andvice versa, in (time relation with respect pressing means, and means fori'extracting the compressedring from the die said'ex- I ti-acting means supporting the base, of the 1 ring. during thecompressingithereof. H

the ring fronrthe'forming'meansyanduinr serting-it in said chamber, meansfforicompressing the ringin'isaidi chamber, :anda

member forming thebottom 50f saidflcham- .1 her during the compressing operatiOnJand-a being shdable axially in the .chamberafori removing the compressed-ring therefrom. V

1 1; Apparatus of the class described .c'omprising ring Winding means, a reciprocable die having an annular chamber therein, a stripper for removing the wound ring from said winding means and inserting it in said die, means for compressing the ring in said chamber, an extracting member reciprocable With said the and movable longitudinally of said chamber for removing the compressed ring therefrom, means for reciprocating said die in timed relation from ring receiving to compressing positions, and vice versa, and means for actuating said extracting memher, said last named means and member having engaging portions that are relatively slidable during the reciprocation of said die.

In testimony whereof, I have subscribed my name.

MARTIN M. CQDY.

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