US1515874A - Coiling machine - Google Patents

Description

www, R8, wm. Mmmm J. F. OCONNOW ,COILING MACHINE Fild Feb. 23. .1921 3 Sbwwr-Shwv. 1

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j?? By/g Patented Nov. i6, i924.

JOI-IN 3?. OCONNOR, OF CHCAGO, ILLQNOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO W. H. MINER, NC., A CORPORATION F DELAWARE.

COILING MACHINE.

Application filed. February 23, 1921. Serial No. 447,149.

To all u1/wm t may concer/n.'

Be it known that I, JOHN F. OCoNNoR, a citizen cf the United States, residing at Chicago, in the county of @ook and State of illinois, have invented a certain new and useful improvement in Coiling Machines, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

rlhis invention relates to improvements in coiling machines.

One object of the invention is to provide an eiiicient, heavy duty machine, adapted for the coiling 0f rods or bars and more especially adapted for the coiling of rods or bars into high capacity springs such as are used in shock absorbing mechanisms of railway draft riggings.

A more specific object of the invention is to provide a coiling machine of the general character above indicated wherein provision is made for adjustment for diiferent pitch, different diameter coils, and different diameter Amaterials used. 1

Une specific object of the invention is to provide a novel guide to insureproper deflection and bending of the rod or bar mate rial during the coiling process as it passes Abetween certain of the bending rollers and to prevent possible jamming of the material especially when the front end of the rod or bar passes from one roller to another.

Other objects of the invention will more "clearly appear from the `description and claims hereinafter following.

In the drawings forming a part of this specification, Figure l is a side elevational view of a coiling machine embodying my improvements. Fig. 2 is an end view of the machine illustrated in Fig. l and illustrating also a partially coiled rod. Fig. 3 is a sectional view corresponding substantially to the section line 3-3 of Fig. 2. Fig. Ll is a plan view of one of the coiling or bending rollers showing more particularly the means for positively rotating the same.

VFig. 5 is a sectional view corresponding substantially to the section line 5-5 of Fig. 2. Figure 6 is a vertical, sectional view corresponding substantially to the section line 6*-6 of Fig. l. Fig. 7 is an enlarged detail sectional view taken in a general transverse direction of the mandrel in substantially a plane coinciding with the pitch of the coil being formed and illustrating more particularly my improved guide. Fig. 8 is a perspective view of the improved guide detached. And Fig. 9 is a sectional View corresponding substantially to the section line 9e-9 of Fig. 7.

in said drawings, the machine is shown as provided with a suitable standard or frame l0 having vertically extending spaced sections 10a-l0FL between which is located a driving pulley ll keyed or otherwise rigidly secured to a combined driving shaft and mandrel l2.J the latter extending horizontally and, at its righthand end as viewed in Figure l, providing a cylindrical mandrel proper 13 of any desired length. Mandrels of different diameter may be employed as indicated for instance by the dotted lines 13a in F ig. 3, my invention contemplating interchangeable mandrels in which the shaft portion proper l2 may be always of the same diameter and readily removable from the driving pulley and gearing hereinafter described.

@n the outer side of the frame l0, the combined mandrel and shaft 12-18 has keyed or otherwise rigidly secured thereto a driving gear 14 adapted to mesh with pair of diametrically disposed idlers 15 and 16. Each of said idlers is specially journaled on a bracket 17 having a collar 17'LL which takes over the mandrel and is adapted to be oscillated with respect to the latter to provide for adjustment. Flach bracket is formed with an offset 17b having an elongated arcuate slot 16 therein concentric with the axis of the mandrel and through which is extended a securing bolt 19 threaded into the frame of the machine so that the bracket 17 with its opening 16 or l5 may beheld in any adjusted position circumferentially with respect to the mandrel within the limits conn templated.

In carrying out my invention, I use two bending or coiling rollers 20 and 2l in addition to the combined guiding and bending roller 22 supported on the standard 23 as seen in Fig. 2. inasmuch as each of said additional coiling or bending rollers 20 and 2l is of the same form and similarly operated, it will only be necessary to detail the formed at the top of a hollow cylindrical heavy spindle 26. lntegrally lor otherwise rigidly united with the trunnion 25 is a bevel or spur gear 27 meshing with a second bevel gear 28 of larger diameter, the latter being rotatably mounted about a bushing 29 formed integral with a heavy plate 3() adjustably slidably mounted on a heavy supporting bracket 31, the latter being adjustn ably slidably mounted en the frame 10, as hereinafter described.

The vbevel gear 28, on the side opposite the bevel gear 27, meshes with another bevel or spur gear 32 carried by the end of a stud shaft 33 rotatably mounted in a suitable bearing 34 carried by the slidable plate 30. At its opposite end, the stud shaft 33 is formed with a gear 35 meshing, in this instance with the idler 15. lTith this train of gearing as best seen in Fig. 6, it will be evident that, if the mandrel were rotated in a Ycounter-clockwise direction, as shown by the arrow the spur gear 32 will be rotated also in a counter-clockwise direction as indicated by the arrow g/ which, through the intermediary of the bevel gears 2S and 27 will effect positive rotation of the roller 20, in 'a `clockwise direction. Similarly, the roller .21 Will be given a clockwise rotation by means of the train of gearing associated with it.

Each bracket 31, is slidably adjustably mounted on the frame 10 so as to move in a radial'direction with respect to the mandrel,V vthis adjustment being effected by means of elongated slots 3G-36, clamping bolts 37 and adjusting bolt 38. As .will be evident from an inspect-ion of Figure 2, the two brackets 31 are spaced from each 'other.circumferentially around the mandrel so as to move in lines coinciding substantially with two radii of the mandrel having an included angle Iof approximately 750 to o therebetween. With this arrangeiment, it 'isevident that each of the rollers 2O and 21 is radially adjustable with respectto 'the .mandrel to thereby adapt the rollers for working` on rods of different diameters and for. coils of different diameters.

Eachof the slide plates 30 is adjustable with respect to its respective bracket 31 and in `lines parallel to the axis of the mandrel, as for instance by means of the slots 39 and clamping bolts 40. Each plate 30 is formed with opposed undercut grooves as indicated at 41-'41 within which are received the edges of the bracket 31 to hold the plate 30 in assembled relation with the bracket and also to facilitate relative adjustment.

By referring to Figs. 3 and 5, it will be seen'that the spindle 26 has secured thereto at yits lbottom end beneath the plate 30, a sleeve 42 which is provided with a radially extending flange-like arm 43, the latter having :an elongated slot 44 .therein through which extends a. clamping` bolt 45 threaded into the plate 30. The spindle 26 and sleeve 42 are held rigidly together by any suitable means such as the set screw 46. `With this arrangen'ient, it is obvious that I am enabled to adjust each roller` 2() and 21 angularly about an axis coinciding with a radius from the mandrel which radius extends per pendicnlarly to and intersects the axis of rotation of the respective roller and which also is parallel to the line of adjustment of the respective brackets 31 relatively to the mandrel.

From the preceding description, it will be seen that each of the rollers 20 and 21 is positively driven in synchronism with the mandrel and preferably with a peripheral speed corresponding to the difference between the peripheral speed of the surface of the mandrel and the outside surface speed of the rod or bar 47 heilig coiled. Also, each roller 2O and 21 is adjustableradially and axially with respect to the mandrel, as hereinbefore described. lVith this construction, I am enabled to always bring the grooves 2Oa and 21a of the rollers 2() and 21 respectively strictly tangent to the coil being formed regardless of the pitch or diameter of the coil or diameter of the rod formingthe coil and thereby obtain accurate bending and ceiling of the rods and true helices without deformation of thc material.

Heretofore, considerable diliiculty has been experienced in feeding the front-end of the rod or bar through the bending rollers in starting the rst turn of the helix. Due to the necessity of having the rollers relatively close and of substantial and'compraratively large form when working .upon heavy material, it is not feasible to provide a guide or deflector between the rollers and at `the same time have said guide or deflector rigid ly supported from the frame. To overcome the diliiculty mentioned, I `have'provrded a novel guide designated generally'by the reference A. Said guide is in the form .of a block which, at its inner or operative end, is provided with a curved groove as indicated at 48 corresponding substantially to vthe helix of the coil being formed but which groove 48 nevertheless is sufficiently deepened so as to leave a clearance between it and the exterior periphery of the coil as indicated at 49 in Fig. 7. With this arrangei ment, the guide prevents the forward end of the rod from becoming jammed between the two rollers 2O and`21 and yet does not interfere with or frictionally retard the advance of the rod during the subsequent coiling thereof. The block A is made to conform substantially to the passage defined between the two rollers 20 and 21 inalinement with the grooves thereof so that the guide block has a surface 5() on l'each side Which is convex in cross section as indicated in Figure 9 and at the same time curved to coliform to the periphery of the groove of the roller. As clearly shown in Figure 9, a slight amount of play or clearance as indicated at 5l is left between the guide block and the rollers so as to prevent binding While at the same time insuring the proper support and maintenance of the guide block in position by the rollers themselves Without the aid of any independent supports secured to the frame of the machine.

I have herein shown and described what I now consider the preferred manner of carrying out the invention but the same is merely illustrative and I contemplate all changes and modilications that come within the scope of the claims appended hereto.

I claim:

l. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; and in` dependent means for adjusting each roller 1 longitudinally of the axis of said mandrel,

said vmeans comprising a support and a roller carrying slide movably mounted upon the support.

2. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; and means for adjusting each roller bodily rotatably about an axis coinciding With a i radius ,from the mandrel, said adjusting means including, a roll support and an oper` ating element connected to said roll support for moving the latter to adjust the roller about said axis.

3. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; and means for adjusting each roller radially to- Ward and from and axially relatively to the mandrel and independent means for adjusting each roller bodily rotatably about an axis coinciding With a radius from the mandrel.

4C. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; means for adjusting each roller axially relatively to the mandrel; means for bodily moving said adjusting` means and roller radially of the mandrel; and mechanism for positively rotating each of said rollers in a direction to advance the feed of the material being coiled.

5. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; means for adjusting each roller bodily rotatably about an axis coinciding with a radius Ifrom, the mandrel, said adjusting means including an oscillating lever; and mechanism` for positively rotating each of said rollers in a direction to advance the feed of the material being coiled.

6. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers. disposed circumferentially aroundy the mandrel; means y for adjusting each roller radially toward and from and axially relatively to the mandrel and also bodily about an axis coinciding with a radius from the mandrel, said means including a bracket adjustable toward and from the mandrel, a slide mounted on said bracket, said slide being adjustable lengthwise of the mandrel, and a roller support adjustably mounted on the slide; and mechanism for positively rotating each of said rollers in a direction to advance the feed of the material being coiled. j

7. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed cirf ferentially around the mandrel; means for adjusting each roller bodily rotatably about an axis coinciding Wit-h a radius from the mandrel, said means including a roller support rotatable on saidframe, and a rolle-r support operating element adjustable relative to said frame; and mechanism for positively rotating said mandrel in a direction to advance the feed of the material being coiled.

8. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; means for adjusting each roller radially `toward and from said mandrel; and means for adjusting each roller axially relatively to the mandrel; and separate means for adjusting each roller bodily rotatably about an axis coinciding With a radius from the mandrel; and mechanism for positively rotating said mandrel in a direction to advance the feed of the material being coiled.

9. In a coiling machine having a suitable frame, the combination with a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; means for adjusting each roller axially relatively to the mandrel; mechanism for positively rotating each of said rollers in a direction to advance the feed of the material being coiled; said mechanism including a gear carried by said adjusting means and mechanism for positively rotating' the mandrel in a direction to advance the feed of the material being coiled.

lO. In a coiling machine having a suitable frame, the combination With a mandrel; of a plurality of bending rollers disposed circumferentially around the mandrel; means lau Llll for adjusting 'each roller bodily rotatably about an axis vcoinciding With a radius from the mandrel; mechanism vfor positively rotating each of said rollers in a direction to vvadvance the Vfeed of the material being coiled; said mechanism.including an element rotatable about said aXis and mechanism for positively rotating kthe mandrel in a direction 'to advance the feed oi? the material being' coiled. y

11. Ina coiling machine having a suitable frame, the combination With a mandrel; oi' a plurality of bending rollers disposed circumferentially around the mandrel; means Vfor adjusting each roller radially toward and from and axially relatively to the mandrel and also bodily about an axis co-inciding AWith a radius from the mandrel, said means -including a pair of slides movable lat yright angles to each other and a roller support rotatable on one of vsaid slides; mechanism 'for positively rotating each of said rollers yin a direction to advance the Eeed of the material being coiled and mechanism'forpositively rotating the mandrel in a "direction to advance the 'reed of the material lbeing coiled. f

'12. 'In a coiling machine having a suitable fraii'1e,"thecombination with a positively rotated mandrel; or' a pair of bending rollers .disposed circumferentially around the `mandrel; and means for positively rotating each offsaid rollers, said means including, a gear rotatable in unison With the mandrel; a pair of brackets oscillatably adjustable around the mandrel; a ypinion carried by each of said brackets andmeshing With said gear; and a train 'olii gearing Abetween each of said pinions and -each roller.

'18. vIn a `coiling machine of the character described, the combination with a mandrel: of a pair of grooved bending rollers disposed circumferentially around the mandrel; and a guide block loosely supported by and between said rollers in the grooves thereof.

14. In a coiling machine ci' the character described, the combination With a mandrel; of two grooved rollers relatively closely adjacent and disposed circumicrentially around the mandrel; and a guide block conforming in shape substantially to the passage deiined by the adjacent portions ofthe grooves of said rollers, said block being supported by and between the rollers and hav ing at its inner end an arcuate groove substantially concentric with the mandrel.

15. In a coiling machine of the character described, the combination With a frame; of a mandrel; a pair of bending rollers disposed circun'iferentially around the mandrel; and adjustable supporting means for each of said rollers, each of said means including a bracket slidable on the frame radially relatively toward and from the mandrel, a plate slidably adjustabh` mounted on said bracket in a direction parallel to the axis of the mandrel, and a spindle in Which the roller is directly supported, said spindle being rotatably adjustable relatively to said plate about an axis coinciding with a radius from ysaid mandrel.

In Witness that I claim the foregoing I have hereunto subscribed my name this 14th day of Feb., 1921.

JOHN F. OCONNOR.

Vfitnesses CARRIE GAILING, UNA C. PEKIN.

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