US1305973A - Riveting-machine - Google Patents

Description

F. Y. PEARNE.

RIVETING MACHiNE.

APPLICATION FILED JAN. 29. 1911.

Patented June 3, 1919.

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Avvmvrorz F. Y. PEARNE.

RIVETING MACHINE.

APPUCATWN FILED JAN. 29 l9l7 1,305,973. Pawn-ed June 3, 1919.

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Arman-'5 K .F. Y. PEARNE.

RIVETING MACHINE.

APPLICATION FlLED JAN. 29. 19.11..

7 If a A %M g my V m H w Tmw I H mm FRANK Y. PEARNE, OF LOS ANGELES, CALIFORNIAL RIVETING-MACHINE. p

Specification of Letters Patent. Patenfed 11116 3, 1919.

- Application filed January 29, 1917. Serial No. 145,301.

To all whom it may concern Be it known that I, FRANK Y. PEARNE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Improvement in Riveting-Machines, of which the following is a specification.

This invention relates to sheet metal riveting machines and more particularly to those commonly called straight seamers or machines for riveting the longitudinal seam of a sheet metal pipe or other cylindrical structure formed of sheet metal, and the principal object of the invention is to'provide a seamer that will head the rivets of the pipe on the interior by a reciprocating tool or riveting member.

It is also an object to move the riveting member automatically from one end of the machine to the other, the rivets and the seam being securely held by a clamp acting as an anvil. I I

It is a further object to provide a'fluid operated pressure means to operate the clamp and lap layer and also support the stake and pipe to form a rigid structure to resist the riveter.

In the drawings accompanying this specification Figure l is a side elevation of the machine, showing the clamp and support in open position, a portion of the stake and frame being broken away, the clutch engaged and head in riveting position.

Fig. 2 is a cross section on the line 2-2 of Fig. 1 showing a pipe clamped in the clamping mechanism, the head in contact with rivet, seam laid and whole supported by clamp.

Fig. 3 is a modification in side elevation together with the automatic mechanism for operating and moving the riveting member the latter being in lowest position, clutch disengaged and member about to be shifted to next rivet. I

Fig. 4 is a cross section on line 4-4 Fig. 3 enlarged and halved to show relation of eccentric operating head, and on larger scale. I h

Fig. 5 is a layout of the sleeve cam and its relations to the fixed cam and the keyfor shifting the riveting carriage.

Fig. 6 is a section on the line 66 of Fig.

E t-he position of the locking yoke being reversed or unlocked j p Fig. '7 is a section on line 7 7 Fig. 1 with the sliding block advanced from theposition in Fig. 1 to the engaged point, and Fig. 8 is a section on line 88 the riveting head shown in Fig. 7 in lowest position be ing omitted. 1 V Heretofore straight seamers have been operated by moving the pipe by hand, or the rivets riveted by a plurality'of slidingriveting tools, mounted in a hollow stake, these tools being operated by the drawing through the stake of an inclinedtraveler, the latter requiring the expenditure of great force at slowspeed, sincethe friction and pressure of heading more than one rivet at the same time is enormous. V or y The seamand rivetshave also been held byhand operateddevices that are slow and cumbersome, and the length of sections necessarily limited due to astake unsupported except at its ends. j p

My invention overcomes the above -difliculties and provides a combined traveler and riveter, one head successively riveting all of the rivets automatically, as well as working on one pipe during one travel and performing the same function on the return trip.

The riveting being by a stroke the power required is a minimum and the fluid operated clamping and supporting means is 0perated efliciently and expeditiously by toggle mechanism, the length of sections be ing materially increased by the intermediate supports, the length'loeing only limited by the length of plates rolled.

More specifically, in the drawings numerals are used to designate like parts in the different views, -5 designating the base preferably, in distinction from the usual practice; being built up of two parallel placed I beams, suitably bedded.

Extending upwardly from these beams is a column 6 formed of beams as shown in Fig. 3 or may be casting as in Fig. 1, secured to the base by suitable angle irons 77, upon which column the stake 8 is supported at one end.

This stake is preferably formed of two longitudinal sections, held together by suitable bolts 9 or other fasteners along their lower contacting portions, the upper proximate faces being grooved, or a solid stake recessed-to form, an open elongatedschannel acting as a housing and guideway for the combined riveting and traveling member, with its accompanying operating shaft, the stake having flanges 10 by which itis secured to the column 6.

On the other side of the stake andsup-i by which the gear is held'in longitudinal re- 1 lation by the tongue l5onthe block 16.

This gear 12 is"driven.by a smaller gear or pinion 1f? keyed to a short counter shaft 18, -bearings for'whic'h are. provided in the column 6 anae ia-19', a fly wheel2O also fixed on the shaft being adapted to be driven by a belt continuously; V

Next on the shaft 11- is the male member 21'under tension ofthe spring tension'pins 22, this member of the clutch having a pair of grooves in which the roller 23 is'adapted to be engaged in' turn, this roller being mounted on a sliding stud 24f, actuated by a bell crank 25 through a connectin rod 26, the crank being under the tension 0 a spring 27 in the well known manner. I

This member 21-slides on the shaft 11 and isk eyed'thereto by a long key or feather 28 that isfpro-vided on its outer face with aplumay of spaced holes that determine the intermittent advance of-the shaft and the riveting member in the automatic operati n- The frame 1 9 al so provides a bearing for the shaft 11 exteriorlyof whichis the sleeve QQ that'carries thereon the locking yoke 30 withthe pin 31, this yoke being'unde r'the tensiongofthesprings 32, the yok'ebeing secured to a bar133 providedwith a pin 34:, the sleeve being boredandrecessed to accomn io date these parts, over which is secured the interior cam 35 securedto the frame 19 in fixed position.

Onthe sleeve are cut a pair of similar parallel peripheral grooves 36 and 37- that act' as connected to receive the roller 38 mounted on a stud fixed in the movable block 89. i

This blockis provided With a hingedlatch 40 and extending at right angles to engage the sides. of the bracket 41, secured to "the frame 19, this bracket having a pair of notches 42 into which the latch "is forced by a spring 43, to lock the block 39 to determine the direction of movement of the travcling member.

The yoke 30 is normally held with the pin 31" engaged in one of the holes inthe key 28 this key-being r'emovablysecured in the shaft 11, by suitable fastenings as countersunk screws, the shaft 11 being of such length astoextend slightly outward from the sleeve 29 when the riveting carriage is at, theopposite end of the stake, this latter being of such length as to rivet pipe formed of -material twelve feet in length or more.

vThe riveting carriage in Fig. 1 is composed of a pair of split bearing blocks lfie-45 to carry the shaft and receive the thrust of the'fiange 46 on the shaft 11, on the other side from these blocks being the-eccentric 48 adapted to reciprocate the riveting head 49, this head being held in positionby' a single bearing block 50, this portion of the shaft being preferably of smaller diameter, andthreaded to receive a washer and a retaining nut 51,

A modification of this riveting member is shown in Figs. 3 and l in which a modified form of stake is also shown, a plate 52 forming a floor for the bearing blocks 53-'5 a which as in the other form closely fit within the channeland form the bearing faces'for the reciprocating head 55 operated by "the eccentric56 integral with the shaft 11, exceptingthat'this form ofcarriage requires no thrust flange 46.

The shaft 11 is provided with a keyway in which is secured the key QS, by means'of screws 57-provided at its ends, the sleeve'29 and male meniber2lalso having keywaysto receive-the key.

As before stated thek ey is providedwith a series of spaced holes, in the drawing it being assumed that the'three-eighths rivets are tobe spaced" the usual interval, or one and a half'inches, which as usual are stag. gered so that the riveting interval isjthreequarters, and as the cams throw'the shaft seven-eighths, the pin 31 (since the holes in consisting of the built up, 'i'1prightguideways 60, in the grooves of-whi ch the slides 6l,- a;re guided,these slides being joined in pairs by fixed top frames 62 and bottom frames 63 to form a rectangular slidable structure. if 1 Intermediate of the cross frames is a slid able frame 64 and a shiftable framer65, this latter being joined-with others by a beam 66, to form a rigid backing for the lap layer, clamp facean d anvil 67-. To permit adjust-- ment of this clamp, the fastenings for these frames 65 may] be ren10ve d and the tap screws 68 provided be secured in'the holes 69 after the .frameshave been lifted by the elevating screws 70, shown as-operated by hand'wheels 71, the screws being'threaded in the frames 62 and movably secured to the end'frames 65 by plates 72.-

To support the entire frame when assembled, stops 7 3'are provided which are secured by screws or bolts 74 which may be moved to holes 75, to lower the stop 73, when the largest pipe the device will carry is to be operated upon.

The two frames 63 and 64 are connected together by toggle members formed of levers 7 6 and 77 pivoted togetl'ier by pin 78 with one end of lever 79, two of the latter being preferablv joined by a pin 80 with thepiston rod 81, fixed to a piston 82 mountedin the cylinder 83. This double acting cylinder is provided with passages 84 that alternately act at opposite ends as intake and exhaust, controlled by suitable valves as 85, though all valves are. preferably controlled at one station, or next theclutch operating lever 86.

Theends of the toggle levers are hinged in suitable blocks 108 on the respective frames 63, 64, and as described, a pair of these frames are connected by a brace 107 to form a Support for the cylinder 83, and since this cylinder is moved more or less, flexible couplings are necessary to connect the same to a source of fluid pressure.

For slight variations in the size of pipe the blocks 87 are interchangeable to accommodate the different radius blocks 88 aClapted to be secured to the sliding and contracting blocks 89 in the recesses therefor in the stake 8, under the channel, the number of blocks and recesses agreeing with the number of frames, and spaced so that they cooperate therewith.

These blocks are movable to allow the pipe to be slipped on and off the stake, and to provide this movement, the blocks are provided with slideways to accommodate the saw tooth arranged slides 90, these being preferably formed L shaped and secured by suitable fastenings to the stake in the recess, the blocks 88 also being secured by suitable fastenings.

To slide the blocks, connecting rods 92 are threaded thereto, the first being connected to a bell crank 93 operated by a handle 94 connected with a locking quadrant 95.

When the blocks are in the withdrawn position as inFig. 1 the rods 92 are housed within a groove 96 in the stake 8.

The anvil shown in the modification in Fig. 3 is not of the balanced type above described, but consists of a casting 97 supported by toggle members 98 operated by a piston rod 99 in turn connected to a piston 100 in a cylinder 101, this cylinder being supported by the beams 102, which are supported upon the column 6.

The opposite" ends of these beams 1021 form a support for the hanging bar 103, con-- nected to the beams 104, which act as guide plates-to the anvil 97, the stakelatch 105 that supports this end ofthe stake, being also supported upon this hanger 103'.

In the operation, takingthe machine as shown in Fig. 1 a pipe ready for riveting that has-been punched, formed and holes alined is slipped on the stake from the right, and the rivets inserted so that they project into the channel in the stake, and register with the position of the riveting heador as explained with the three quarter spacing alined. The lever 94 is now forced down to draw the blocks 88 toward the lever and down tocontact with the pipe as in Fig. 2, sufiicient-to-put tension on but not to distort the pipe, and locked in this position.

1 Pressure froma suitable source is now introduced into the lower portions of the cylinder s' below the pistons 82, and the extension of the toggle members forces down the frames 63 and draws down the frames 65 through the bars 61'until the anvil restson the rivet heads and clamps the seam; the action of the continued pressure will then lifttheframe s 64' sliding the same upon the bars 61, until the blocks 108 contact with the bottom of the pipe; the frame lifted from the stops 73 and the supporting of the stake, clamping of the pipe laying of the lap and setting of the rivets, completed. The pressure is locked by any suitable means, and the riveting begun; in practice however the head and carriage would preferably begin at one end, but taking the position shown in Fig. 3 the throwing in of the clutch, after the gear 12 is driven clockwise when viewed from the stake end; by shifting the handle 86 sufficient to withdraw the pin 23, the shaft is driven in the same direction and the sleeve in the direction indicated by the arrows and the roller 38 in the cam groove 36 meets the long incline and forces the sleeve locked to the shaft 11 to the right and advances the carriage one interval outwardly, and while the roller travels in the straight portion as (Fig. 5) the eccentric on the shaft forces the head to riveting position.

The pin 31 is now released by the stud 34 engaging in the cam 35 and the roller 38 traveling the portion y in the cam shifts the sleeve on the shaft to the left seven eighths of an inch, by which time the yoke 30 is released the pin 31 under pressure and the clutch thrown out by the action of the incline 109 on the male clutch member 21, the head in its lowest position.

The roller also approximately halts opposite the gate 110 between the cam grooves so that the sleeve, shaft and riveting carriage may be shifted when it has reached the end of the riveting on the pipe. Lifting the handle 40 allows the block 39 to be shifted to ,the notch a 42" readyv to reverse the above traveliof the head-. v

Pressureis now relieved in the cylinders nd if n e sary appl d; bove t e pi tons to reti rnthe framesto open position the blocks 88, retracted -.by the vlever,-9 .L, and the fin sh d pip e p ed- Claims;

: 1. A machine of the class; describedin n inat en w h I uppQr g: rame, of a ake. rmed Qf e t o s provide ith 11: gitud n l grooves t eir proximat ates 9 fo m ubst t al y hollow truct re, a h ft a p e o tat n said aked-,1 vanda reciprocating riveting; memberadapted to be p ra ed y. d ha tr V 2 A riveting machine .comprisinga stake support, a stake 1 provided with a longitudinal channel a traveling riveting carrying mem r EmQu-n d in. a d annel, rive ing member, meansto; move said rivetingcarrying member, and means to operate saidriveting member. s A

iv ting achin cpmpri ing sta upp rt, a s ak p ovi ed with ant peni om g t d nal; han el, t Y wh h he ivets 1 cf a pipe seam' proje ct, a travelingmemben said channel, riveting member carried j by aid ra el ng. -me nhe.r.- and 1 mea o more saidyearryingmember; and ogerate said rivet: ing member. v

neonate 4. a A rivetingmaehine ..comprising 7 a stake support, a stake provided with an open groove, intermittent, riveting member adapted to travel in said groove and head rivets projecting into said groove, andmeans cooperating with mechanism to operatesaid rivetingmechanism to move the same the interval 0f,one rivet intermediate saidriveting action.

5. Ariveting machine comprising a stake support, a stake provided with an open groove, anintermittent riveting member adapted to travel in said; groove 1 and: head t p eie ting; n aid g ove, means cooperating vvith mechanism to operate said riveting mechanismto move the same one interval, and reversing means to reverse said means cooperating with mechanism to oper ate said riveting member H 67.; A rivetinglmachine comprising acolumri, stakem n d t a d; um a traveling riveting -mechanism, a v shaft 0on netted to said riveting mechanism, spacing means connected to said shaft to determine the, travel 0f said riveting ,mechanismga cam member mounted on said shaft, means t o lock a di mi mhe -s n l ti o ai Spacing means, and meansnto engage said;cam member t0.,sh 1ft said travel ngrivetlng member when said shaft 1s. revolved.

FRANK Y. PEARNE,

fi n y this re ent ay a bta iwi or fire e t a h mddr ing h omm i rof Patents,

, Washington, B 0,?

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