US2077097A - Riveting machine - Google Patents

Description

April y13, 1937. H. H. DIEHL RIVETING MACHINE Filed April 29, 1956 5 Sheets-Sheet l @N m NN M April 13, 1937.

H. DIEHL 2,077,097

RIVETING MACHINE Filed April 29, 193e s sheets-sheet 2l Aprills, 1937. H, Hf mEHL 2,077,097l

RIVETING MACHINE File'd April 29, 1956 3 Sheets-Sheet 3 Patented Apr. 13, 1937 PATENT OFFICE RIVETING MACHINE Herman H. Diehl, Huntington, W. Va., assignor to The West-Virginia Rail Company, a corporation of West Virginia Application April 29, 1936, Serial No. '77,038

Claims.

My invention relates more particularly, though not exclusively, to riveting machines, especially of a'type wherein the riveting is performed by roller means, for attaching to fence posts', the studs at which the wires or wire fencing of the fence are secured.

One of my objects is to provide a riveting machine particularly for the especial purpose above referred to by which the operation of riveting the studs in place may be quickly, positively, and easily performed.

Another object is to provide a machine for producing on fence posts studs having angularly disposed portions extending lengthwise of the posts for the attachment thereto of the wires or wire fencing to be assembled with the posts for producing a fence, and to provide in the same machine for the rivetingv of the studs in place and the bending of the same to produce the angularly extending Yportions above referred to. y Another object is to provide a'machine in which the studs, riveted in place, are bent at the proper place and preferably in the single passagev of the work through the machine.

Another object is to provide a machine in which studs may be riveted inplace, and their free ends preferably bent into angular position regardless of the number of studs and their spacing without requiring anyy adjustments of the machine for different stud-spacing.

Another object is to provide a machine by which thel studs are always bent alike and in the proper direction and on the center line of the posts.

Another obj ect is to provide a machine whereby the posts to which the rivet-studs are to be applied may follow each other through the machine continuously and thus make for great speed ofoperation.

Another object is to provide for the riveting of the studswith any desired degree of tightness.

Another object is to provide a machine in which the free ends of the studs may be bent to any desired angular position; and other objects as will be manifest from the following description.

Referring to the accompanying drawings:

Figure 1 is a view in side elevation, with certain portions thereof broken away, of a machine embodying my invention.

Figure 2 is an enlarged section taken at the line 2 on Fig. l and viewed in the direction of the arrow.

Figure 3 is a tion of a portion of the `shown in Fig. 2.

Figure 4 isa view in end elevation of the mafragmentary View in side elevastructure and the work chine of Fig. 1 viewing it from the left-hand end thereof with certain parts broken away and with the support for the work shown in section.

Figure 5 is a view in elevation of the riveting rolls with the Work in position therebetween, the post element of which is shown in section.V

Figure 6 is an enlarged fragmentary face view of a portion of the post showing the stud positioned therein prior to the operation thereon by the riveting mechanism.

Figure 7 is a similar view of the structure of Fig. 6 showing the structure after the riveting operation.

Figure 8 is an enlarged broken longitudinal sectional view taken at the line 8 on Fig. 4 and viewed in the direction of the arrow.

Figure 9 is a fragmentary view in side elevation of the .stud bending rollers showing the work interposed therebetween and one of the studs in the course of being bent.

Figure 10 is a View in elevation of the two bending rolls with the work interposed therebetween and showing the stud bent to its final angular Y position; and

Figure 11, a broken` view in side elevation of the post and one of the rivet-studs shown as secured to, and bent, to nal position, by the machine of the preceding figures.

As a preface to a description of the particular illustrated machine, it may be stated that the fence posts shown at I2 and to which the rivetstuds-are to be secured at spaced apart intervals therealong, is of channel form and the rivetstuds are to be applied to the web portion I3 of the channel.

The studs to be secured to the post for forming the attaching studs for the wires or 4wire fencing, one of which is shown at I4, are of a form, more particularly as shown in Fig. 2 presenting a head I5 and a circumferentially thickened portion I6 adjacent thereto. In practice the web I3 would be provided with openings I'I therein of a size slightly larger than the portions I6 of the studs, but smaller than the heads I5, into which the studs are inserted from the interior of the channel to extend at their portions I6 in. these openings with the heads I5 flatwise opposing the undersurface of the web I3; a separable filler bar IB containing a longitudinally extending groove I9 registering with the heads I5 being positioned within the channel I2 for preventing accidental dislocation of the studs.

Referring now to the illustrated machine, it comprises a bed 20 having at one end a table 2| carrying an upwardly extending rib 22 extending post and studs to the operating parts of theV machine.

Located in front of the guide rib 22 and in I alinement therewith are means for riveting the rivet-studs in place on the post, these means comprising an upper roll 23 and a lower roll 24, the lower roll 24 being journaled at shafts 25 and 26 thereon in stationary journal boxes 21 and 28, respectively, carried by the bed 20. The roll 23 which is positioned directly above the roll 24 is journaled at shafts 29 and 30 in journal boxes 3| and 32 slidably mounted on vertical uprights 33. Coiled springs, one of which is represented at 34, are interposed between the journal boxes 21 and 3|, and 28 and 32. Adjusting screws 35 threaded in a stationary part of the machine and bearing against the upper sides of the journal boxes 3| and 32 afford a means for adjusting the spacing of the rolls 23 and 24 in opposition to the action y'of the springs 34 tending to separate these rolls.

The lower roll 24 is provided circumferentially with an annular rib 36, the cross sectional contour of which is of substantially the same size and shape as that of the space defined by the channel in the post, whereby as the post, with the rivet studs thereon, is fed into the space between the rolls 23 and 24, the channel of the post will receive the rib 36 as shown, this rib containing a circumferential groove 31 of substantially the same width and depth as the width and thickness of the heads I5 of the rivet studs which lthus become positioned in the groove 31 as shown.

The roll 23 contains a deep annular groove 38 about its circumference, this groove which is of such depth as to cause its bottom wall 30 to clear the upper ends 0f the rivet studs, being of a width slightly greater than the diameter of the shank portion of the rivet stud, but of less width than the diameter of the portion I6 of the rivet stud.

The roll 24 would be adjusted to such an elevation as to cause it to engage the upper ends of the enlargement I6 of the rivet studs as they are moved into position between the rolls 23 and 24, and mash down portions oi the enlargements vI6 at opposite sides of the shank portions of the rivet studs thus upsetting them against the upper surface of the post as represented at 40 (Figs. 5 and 7) thereby riveting the rivet studs in place in the posts.

'Ihe rolls 23 and 24 may be driven in any suitable way as for example by means of a motor 4I mounted on the bed 20 and driving, through reduction gear mechanism (not shown) located in a gear box 42, a shaft 43 connected with the shaft 30, the shafts 30 and 26 being connected together by gears 44 and 45 of the same size whereby the rolls 23 and 24 are rotated in opposite directions as indicated by the arrows in Fig. 1.

Located at the entrance side of the rolls 23 and 24 are guide means for insuring the entry of the ends of the rivet-studs into the groove 38 in roll 23, these means, in the particular construction shown, comprising a pair of bars |00 of angle shape and reversely positioned as shown aow/,097

in Fig. 4 and supported at their depending flanges IOI on the table 2| at opposite sides of the rib 22 and spaced throughout their extent from this rib 22. The horizontal fianges |02 of the bars |00 are spaced apart as shown in Fig. 4 to provide a slot |03 for the rivets in line with the groove 3B, the entrance end of the slot |03 being formed with a flaring throat |04 to guide the rivet studs into the narrower portion of the slot |03.

Located in front of the riveting mechanism described is mechanism for bending the free upwardly extending ends of the rivet studs into angular position as for example as shown at |4 in Fig. 11, these means comprising upper and lower rolls 46 and 41. The lower roll 41 is journaled at shafts 48 and 49 on its ends, in stationary journal boxes on the machine, one of which is shown at 50. The upper roll 46 which is located above the roll 41 is journaled at shafts 5I and 52 in journal boxes 53 and 54 slidably mounted in vertical uprights 55 and 56. Coiled springs, oneshown at 51, are 'interposed between the vertically movable journal boxes 53 and 54 and the stationary journal boxes. Adjusting screws 58 threaded in a stationary part of the machine and bearing against the upper sides of the slidable journal boxes 53 and 54 afford a means of adjusting the spacing of the rolls 46 and 41 in opposition to the action of the springs 51 tending to separate these rolls.

The roll 41 is a duplicate of the roll 24, the circumferential rib of the roll 41 being represented at 5| and its annular circumferential groove at 60. The upper roll 46 is circumferentially grooved as represented at 6I to adapt it to t over, and partially encompass, the upper portion of the post as shown in Fig. 10. The bottom of the groove 6I contains a succession of grooves 62 and 63, the groove 62 being of a width slightly greater than the width of the rivet stud, measured through the portions 40 thereof. The groove 63 is of a width slightly greater than the diameter of the shank portion of the rivet stud and of a depth considerably greater than the depth of the groove 62 and dening the width of the spaces between the angularly extending portions I4 of the rivet studs and the adjacent face of the post, in the nished structure.

In operation the post with the rivet studs riveted thereto by the riveting mechanism described, are fed into the space between therolls 46 and 41, these rolls gripping the post and "exerting a feeding action thereon and operating as the upper ends of the rivet studs move into engagement with the bottom wall ofthe groove 63, to bend these ends over into the position shown in Figs. 8, 10 and 11.

The roll 41 may be driven in any suitable Way, as for example through the medium of 'an endless sprocket chain 66 engaging sprockets 61 and 68 on the rolls 24 and 41, respectively.

As will be understood from the foregoing, the

post after once being fed into the bite of the rolls 23 and 24 is automatically fed through the machine by the action of these rolls and the rolls 46 and 41 from which latter they are delivered to a supporting roll 69 journaled at the feed-out end of the machine, the roll'69 being mounted for vertical adjustment to insureperfectly straight delivery of the posts.

While I have illustrated and described a particular construction of machine embodying my invention I do not Wish to be understood as intending to limit it thereto, as the same may bey variously modied and altered and the invention embodied in other forms of structure within the spirit thereof. Thus by way of examples, the posts to which the studs are to be attached may be of other cross-sectional shape than that shown in which event the contours of the riveting and bending rolls would be correspondingly altered; and if desired, the posts with the rivets preliminarily positioned thereon may be fed into the machine in inverted position, namely, with the webs of the channels lowermost, in which event the filler bar I8 may be eliminated and the riveting and bending roll mechanism would be inverted to cause the rolls 24 and 41 to be the upper rolls and the rolls 23 and 46 to be the lower rolls.

What I claim as new and desire to secure by Letters Patent, is:

1. Riveting means comprising members for receiving rivets between them and setting the rivets, one of said members being in the form of a roll having a peripheral groove to receive ends of the rivets, said groove being of a width less than the thickness of those portions of the rivets which are to be upset.

2. Riveting means comprising rolls for receiving rivets between them, one of said rolls having a peripheral groove to receive ends of the rivets, said groove being of a width less than the thickness of those portions of the rivets which are to be upset.

3. Riveting means for `riveting in place rivets having shanks with enlargements at the portions thereof at which they are to be upset, comprising members for receiving the rivets between them and setting the rivets, oneA of said members being in the form of a roll having a peripheral groove to receive the ends of said shanks and of a width less than the thickness of said enlargements, whereby said means operate to upset the rivets at said enlargements.

4. A machine for bending studs on studequipped articles comprising members between which the articles are passed, one of said members having a groove to receive the outer ends of the studs, the distance from the bottom of said groove to the opposing face of the other of said members being less than the thickness of said articles measured at their stud-equipped portions.

5. A machine for' bending studs on studequipped articles comprising members between which the articles are passed, one of said members being in the form of a roll having a peripheral groove to receive the outer ends of the studs, the distance from the bottom of said groove to the opposing face of the other of said members being less than the thickness of said articles measured Y `the combination of rotary means for riveting studs to an article and rotary means located beyond said first-named means and to which the articles with vthe studs riveted thereon are delivered, for bending the studs into angular position. 8. A riveting machine comprising a combined rivet-retainer and guide for apertured bars to which rivets are to be secured and in which apertures headed rivets are positioned with their heads lowermost and along which said bars, with the rivets assembled therewith and bearing on said guide, are movable, and riveting means at an end of said guide adapted to receive the assembled bars and rivets from said guide.

9. The method of assembling apertured bars and headed rivets in said apertures and setting the rivets, which comprises inserting the rivets into said apertures, assembling with said bars, to engage the heads of the rivets, means, separate from said bars, for holding the rivets from dropping out of said apertures, sliding the bars, with the rivets thereon, along said means and out of engagement therewith, maintaining the rivets in place after leaving said means, and upsetting portions of said rivets to secure them in place on said bars.

10. Riveting means comprising opposed rolls journaled to rotate about substantially parallel stationary axes, one of said rolls formed to support a rivet andthe remaining roll formed to upset a rivet supported by the rst named roll.

HERMAN H. DIEHL.

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