US1768338A - Wrapping machine - Google Patents

Description

June 24, 1930.

w. c. STEVENS WRAPPING mcnmn .Fil ed Marqh 5, 1924 a She ets-S heet June 24, 1930.

w. c. STEVENS WRARPING MACHINE F i1ed March 5, 1924 8 Sheets-Sheet June 24, 1930, w. c. STEVENS WRAPPING MACHINE s Sheet-Sheet Filed March 5, 1924 June 24, 1930. w. c. STEVENS WRAPPING MACHINE Filed March 5, 1924 8 Sheets-Sheet 4 June 24, 1930. w. c. STEVENS 1,763,338

WRAPPING MACHINE Filed March 5, 1924 s Sheets -Sheet 5 oerzz or CQZZ'am 0620;

M6 Y Q SFQ June 24, 1930. w. c. STEVENS WRAPPING MACHINE 8 Sheets-Sheet 6 7 Filed March 5, 1924 June 24, 1930. w. c. STEVENS WRAPPING MACHINE Filed March 5, 1924 8 Sheets-Sheet 7 June 24, 1930- w. c. STEVENS WRAPPING MACHINE Filed March 5, 1924 8 Sheets-Sheet J04 J05 I 5 105 Q eraZor Patented June 24, 1930 UNITED STA WILLIAM C STEVENS, OF AKRON,

RUBBER COMPANY, OF AKRON, OHIO,

OHIO, ASSIGNOR TO THE IE'IB'ESTONEv TIRE AND A CORPORATION OF OHIO WRAPPING MACHINE Application filed March 5, 1924. Serial No. 696,948. i

casing, coil of Wire, etc.

Heretofore, wrapping machines of this type have been employed in which are provided a rotary annular shuttle carrylng a reel of Wrapping paper and having a hinged section or gate capable of being swung outwardly so as to insert an annular article into the eye of the shuttle, supporting and driving rollers so positioned at either side of the shuttle as to drive the article cireum' ferentially through eye of the shuttle and driving means arranged rapidly to rotate the shuttle and slowly to drive the articlesupporting rollers whereby the wrapping material may be applied to the article in overlapping helical convolutions.

The chief objects of the invention are to provide improved means for guiding an article through the shuttle, improved means for adjusting the article-driving and supporting rolls toreceive articles of different sizes, and improved power-control means for quickly starting and stopping the operation of the machine. Lesser objects will appear from the following description of the machine.

Of the accompanying drawings in which I illustrate my invention in its preferred form:

Figure 1 is a front elevation of a wrapping machine embodying my invention;

Figure 2 is a left elevation of the machine as shown in Figure 1;

Figure 3 is a plan of the machine;

Figure 4 is a section on line %4 of Figure 1' Figure 5 is a section on line 55 of Fig- -ure 1;

Figure 6 is a section on line 6-45 of Figure 3;

Figure 7 is a detail elevation of the shuttle and shuttle frame illustrating a guide roller adjusting. device embodying my invention; Figure 8 is a detail elevation, partly in section, of a shuttle;

Figure 9 is a plan of the shuttle;

'ter of the table 1 is mounted FigurelO is a section on line 10-10 of Fi re 8; and

igure 11 is a section on line 11-11 of Fi re 8.

eferring to the drawings, 1 is a low frame or table having mounted, respectively, at the rear corners thereof upstanding frame members 2 and 3. Intermediate of the frame members 2 and 3 and to the left of the center of the table 1 is mounted a shuttle frame 4 on which is journaled flanged shuttle supporting rollers 5, 5. To the right of the cena frame member 6. A rotary annular shuttle 7 is supported in the frame 4 in a vertical position by the rollers 5 and a flangedshut e driving roller 8 mounted for driving the shuttle in a manner to be described later.

For properly positioning and circumferentially drlving an annular article through the eye of the shuttle 7, there are provided transversely flat-surfaced rollers 9 and 10, respectively positioned to the left of the shuttle frame 4 and to the right of the frame member 6, each roller 9 or 10 being secured on a shaft 11 or 12 mounted in a journal 13 or 14 secured to a slide 15 or 16; The slides 15 and 16 are each formed with an undercut recess 17 or 18 (Figure 3) and are slidably mounted, respectively, on frame members 2 and 3 by engagement with a pair of vertical guide rails 19, 19 formed on each frame member 2 and 3 and, in efiect, dovetailing into the recesses 17 or 18 respectively. Connected to each slide 15 or 16 adj acentthe bottom thereof is an adjustable link 20 or 21,

which links 20 and 21 are respectively connected to ' arms 22 and 23 secured on a rockshaft 24 extending across the front of the machine. The rock-shaft 24 is j ournaled in bearing brackets 25, 25 mounted upon the table 1, a notched yoke 27 being secured to the center of the shaft 24, the notches therein being in engagement with studs 28, 28 (see Figure 5) formed on an adjusting nut 29 screwhr'eadedly mounted on a rotatable threaded rod 30, which rod 30 is vertically mounted in a lower bearing bracket 31 and an upper bearing bracket 32, both brackets .31 and 32 being secured upon the table 1.

-' The upper end of the rod 30 extends above the bearing bracket 32 and has secured thereto a hand wheel 33.

For driving the rollers 9 and 10 in all positions of their adjustment, there is ro- Vided a drive-sprocket 36 on each roller s aft 11 or 12 and journaled on each slide 15 and the chain is trained over 16 offset from and respectively disposed above and below the drive-sprocket 36 are idler sprockets 37 and 38 adapted to maintain a drive chain 39 trained over the drive- ,sprocket, as shown in Figure 1, in all positlons of each slide. The drive chain-39 1s adapted'to drive both sprockets 36 whereby the rollers 9 and 10,w1ll be driven in the same direction, e. g. clockwise as shown in Figure 1. In order to uide the chain 39 about both sets of sproc ets 36, 37 and 38, a series of idler sprockets40, 41, 42, 43 and 44 journaled on studs secured on the back of the table 1 and the frame members 2 and 3. Idler sprocket is adjustably secured in a slotted bracket 45 whereby looseness in the drive chain 39 may be taken up. The chain 39 is driven by a sprocket 46 (see Figure 4) secured on a sleeve 47 journaled on a stud 48 secured to the back of table the table. A gear 49 is also secured on the sleeve 47 and is driven by a gear 50 secured on a shaft 51 journaled in bearing brackets 52, 52 mounted on the table 1. A worm gear 53 is secured on shaft 51 intermediate the brackets 52 and meshes with a worm 54 secured on a main drive shaft 55 extending across the machine and journaled in bearings' 56, 57 and 58 respectively in frame member 2, shuttle frame 4 and frame member 3.

Shuttle driving roller 8 is secured directly onto the drive shaft 55 so that rapid'rotary motion may be imparted to the shuttle 7, whereas, due to the worm drive for sprocket chain 39, the rollers 9 and 10 are rotated comparatively slowly to thus provide for the overlapping of the convolutions of the wrapping material.

For guiding an annular article through the shuttle, two pairs ofguide rollers 59, 59 and 60, 60 are positioned respectively adjacent the left side and the right side of the such as 62 (Figure 7), 55

shuttle 7. Each guide roller 59 .or 60 is journaled on a stud 61 so pivoted to a lug, that, the stud may be held by suitable locking means (not shown) at any desired angle, referably substantially radially of the annu ar article, as illustrated in Figure 1. There are two lugs 62, on each of which is mounted the front guide roller of each pair, the lugs 62 being secured respectively on similar straight sliding rack bars 63, 63 reciprocably mounted, respectively, on shuttle frame 4 (Figure 7) and frame member 6 (Figure 5). The rear guide roller of each pair is mounted 1 adjacent the left end of.

on a lug member 64, so secured on a bent sliding rack bar 65 and so formed as to slidingly embrace each straight rack bar 63.

he rear portion of each bent rack bar 65 is so formed as to extend in parallel spaced relation to the rear portion of the straight rack bar, being slidably mounted, respectively, in shuttle frame 4 and frame member 6. The opposed spaced edges of each set of rack bars 63 and 65 are formed with teeth with which meshes a gear 66,-both gears 66 being secured on a common shaft 67 journaled in shuttle frame 4 and in frame member 6. Thus if one slide bar 63 or 65 is urged forwardly or rearwardly, the rollers of both pairs of guide rollers will be simultaneously urged from or toward each other.

For operating the adjustable guide rollers, there is provided a lever 68 pivoted on shuttle frame 4 (see Figure 7) in operative relation to a ratchet plate 69, a latch 70 being so pivoted to the lever 68 as to ,be engageable with the ratchet. A latch rod 71 is secured to a bell crank grip lever 72, hav-' substantially a vertical position on the rollers 9 and 10 and between the pairs of guide rollers 59 and 60, a flanged roller 76 (see Figures 1, 2 and 3) is provided which is adapted to removably engage and track upon the upper periphery of the article. The roller 76 is journaled on a stud 77, secured to an arm 78 journaled in a bearing bracket 79 adapted to be vertically adjusted on an upright standard 80, the standard 80 being mounted on a base plate 81 secured to the shuttle frame 4 and frame member 6.

The shuttle 7 (see Figures 8 to 11) comprises a casting 82 in the form of a partial annulus, one end of which is formed with a tongue 83 to which is pivoted a shuttle gate 84, the latter being grooved, as at 85, on its pivot end in order to straddle said tongue. The other end of'the gate 84 is formed with a groove 86 and a bolt aperture 87 extending endwise into the gate. A bolt 88 is slidably mounted in the aperture 87, a spring 89 being disposed in back'of 'the bolt and abutting the inner end of the aperture so as to normally urge the bolt outwardly from the aperture. Outward movement of the bolt 88 is limited by a stud 9O so secured to the bolt 88 as to project through the rear portions of rack bars 65 I slots 91, 91 cut in the gate 84 so as to communicate with the bolt aperture 87. A handle 92 is formed on the end of the stud 90 and a handle 93 is secured on the gate 84 adjacent the rear end of the aperture 87 so as to provide grip means by which the bolt 88 may be urged into the aperture 87 against the action of spring 89. The other end of the partial annulus 82 is formed with a tongue 94 having a groove therein in which is secured a steel wear-plate 95. An aperture 96 is formed in the tongue 94 for the rece tion of the outer end of bolt, 88 for lockmg'the gate 84.

For carrying a roll of wrapping paper, a reel 97 is mounted on the shuttle 7, the reel 97 comprising a disc 98 formed on a stud 99 about which is coiled a substantially elliptical spring 100 adapted to slidably receive and retain a roll of paper, designated 101. Adjacent the paper reel and counterclockwise therefrom is provided tensioning means comprising a plate 102 secured to the shuttle 7 by center tension pin 103, the plate 102 having formed thereon tension pin 104 whereby the latter -may be secured in varigus positions around the center tension pin It is desirable that the exposed edge of each convolution of wrapping material be folded to prevent mutilation of the wrapping. To this end a folding tube 105, adapted to fold one edge longitudinally of the strip, is secured onthe shuttle 7 counterclockwise from the tension plate 102. Beyond the folding device is a paper creasing and paper guiding roller 106 journaled on a stud 107 so formed and so secured to the shuttle as to extend at a slight angle outwardly of the shuttle eye.

Because of the rapid rotation of shuttle 7, it is necessary in order to speed up the wrapping operation, that'the shuttle be quickly stopped upon the removal of power from the drive shaft 61. Accordingly, a combined clutch and brake control is provided. The drive shaft has'journaled thereon a clutch collar 108 adapted to be continuously driven by a pulley 109 secured to said collar, a belt 110 being trained over the pulley 109 and over a pulley 111 secured on the shaft of amotor 112 hung on a brackt 113 secured to the under surface of tablel, the belt 110 extending upwardly through an opening in the table 1. Splined on the drive shaft 55 is a shiftable clutch sleeve 114 adapted to cooperate with the clutch collar 108. A shuttle brake 115 (see Figure-7) is so secured on a lever 116 as to be engageable with the outer periphery of the shuttle 7, the lever 116 being pivoted on shuttle frame .4 (see Figure 7).

For simultaneously shifting clutch sleeve 114 and operating the brake lever 116, a rock shaft 117 is journaled in V-shaped suspension brackets 118,-118 secured to the front and back of the table 1 and extending downwardly therefrom. A double-acting foot pedal lever 119 is secured to the forward end of the rock shaft 117 which is adapted to be rocked in either direction by pedals 120 and 121 formed on the ends of the lever 119. A clutch-operating arm 122 is secured on the rock shaft 117 and connected by link 123 to the end of a lever 124 extendin upwardly through an opening in table 1 an plvoted to brackets indicated at .125 secured on the table 1. The upper end of lever 124 is formed as a notched yoke 126, the notches of which engage studs indicated .at 127 formed on the clutch sleeve 114; A brake operating arm 128 is secured on the rock shaft 117 and is connected by link 129, extending. through an opening in the table 1, to the brake operating lever 116.

On'the top of frame member 3 is mounted a well known device for applying a peripheral adhesive strip to the helical wrappings.

This device includes, briefly, supply roll supporting brackets 130, 130 adapted to support a roll of paper 131 having an adhesive surface, a tension brake 132 resting on the r oll,

a vessel 133 containing water for moistenmg the adhesive side of the paper strip, a moistening roll 134 over which the paper strip may be led, a guide roll 135, and a pressing element 136 pivotally mounted on the vessel and adapted to. be maintained in pressing contact with the periphery of an annular article by the counter-weight 137 in the manner illustrated in Figure 1.

c In operation, an annular article, such as a tire casing, is inserted through shuttle gate 84 between the guide rollers of both pairs 59 and 60 in the position illustrated in Figure 1, the upper article-engaging roller 76 being swung upwardly for this purpose and then swung into cooperation with the tire casing as illustrated in dotted lines. The relative vertical positions of the article-driving rollers 9 and 10 are adjusted so that the tire will be directed downwardly at a substantial angle as it passes through the eye of the shuttle. and the relative horizontal positions of the rollers v9 and 10 and the guide rollers 59 and 60 are such as to direct the tire in a plane at'a slight angle to a plane perpendicular to the plane of the shuttle, roller 10 being slightly forward of roller 9. By this arrangement, the paper strip coming from the shuttle 7 may be applied helically about the tire, twisting of the paper strip being avoided. The vertical position of the tire with respect to the shuttle is adjusted so that the tire will be directed through substantially the center of the shuttle eye by operating hand wheel 33 to simultaneously raise or lower the driving rolls 9 and 10.

It is understood that guide rollers'59 and 60 have been separated sufliciently to permit insertion of the tire therebetween. Lever 68 is then operated to the left, as shown in Fi ure 7, and, as willbe evident, simultaneousfi forces the rollers 59 and 60 into engagement with the opposite sides of the tire, in which position they are held by the latch 70.

Vhen the tire is properly adjusted and assuming that motor 112 is continuously being operated, thus continuousl rotating clutch collar 108, the end of t e reel of paper 101, which is threaded through the tension device 102, (see Figure 7), and the folding tube 105 and trained over the guide roller 106, is grasped by the operator and held in contact with the tire casing. Foot I pedal 121 is depressed simultaneously to shift clutch sleeve 114 into engagement with clutch collar 108 whereby shaft 51 isdriven rapidly to rotate shuttle 7 clockwise, as shown in Figure 7, by drive roller 8 and slowly to drive rollers 9 and 10 clockwise,

as shown in Figure 1, by means of worm 54,

gears 50 and 49, drive sprocket 46 and drive chain 39, and to remove brake 115 from engagement with the shuttle 7 As the wrapping progresses, the operator removes his hand from the wrapping strip and applies the peripheral adhesive strip in the customary manner.

When the wrapping of the tire is finished, the lever 120 is depressed simultaneously to shift clutch sleeve 114 out of engagement with collar 108 and to apply brake 115 to the shuttle 7 quickly to stop the latter. The strip of wrapping paper is severed close to the tire and the latter removed from the machine through the shuttle gate 84, whererepeated, it being necessary,

upon the operation as described above is however, only to adjust the machine in the manner described when a' lot of tires are to be wrapped which are of a different size from those lastwrapped.

Modifications may be resorted to without departing from the spirit or scope of the invention as claimed in the appended claims.

What is claimedis:

1. Apparatus for wrapping annular articles, said apparatus comprising a rotary annular shuttle, transversely flat rollers forv driving an annular article by engagement with its periphery circumferentially through the eye of the shuttle, a pair of guide rollers positioned at either side of said shuttle adapted to receive the article therebetween, and means for adjusting therollers of both pairs toward or from each other relatively of the shuttle.

2. Apparatus for wrapping annular articles, said apparatus comprising a rotary annular shuttle, a roller at either side of said shuttle for supporting and circumferentially driving an annular article through and upwardly from the eye of said shuttle, each roller being journaled on a vertically movapositively and simultaneously ble slide, a sprocket connected for rotation with each roller, a pair of idler sprockets 3. Apparatus for wrapping annular ar ticles, said apparatus comprising a rotary annular shuttle, a roller at either slde of said shuttle for supporting and circumferentially driving an annular article through and upwardly from the eye of said shuttle, each roller being journaled on a vertically movable slide, a sprocket connected for rota tion with each roller, a pair of idler sprockets journaled on each slide, a drive chain trained over the sets of sprockets on both slides, said chain being adapted to drive both rollers in the same direction,

means for driving said chain, and means for vertically adjusting said slides.

4. Apparatus for wrapping annular articles, said apparatus comprislng a rotaryannular shuttle, a roller at either side of said shuttle for supporting an annular article to be driven circumferentially through the eye of the shuttle, and means whereby said rollers may be independently secured in relatively different vertical positions without eflecting their relatively horizontal positions.

5. Apparatus for wrapping annular articles, said apparatus comprising a rotary annular shuttle, a roller at either side of said shuttle for supporting an annular article to be driven clrcumferentially through the eye of the shuttle, means whereby said rollers may be simultaneously adjusted vertically, and means whereby each of said rollers may be independently secured in relatively difi'erent vertical positions.

6. Apparatus for wrapping annular articles, said apparatus comprising a rotary annular shuttle, a "roller at either side of said shuttle for supporting an annular article to be driven circumferentially through the eye of the shuttle, each roller being journaled in a vertically movable slide, a link connected to each slide and to an {arm secured on a rock shaft, a yoke secured on said rockshaft and adapted to engage an adjustable nut, said nut being screw-threadedly mounted on a threaded rod, and means for rotating said rod to simultaneously raise orlower both slides.

Images