US2328149A - Rivet carrier for riveting machines - Google Patents

Description

A. L. JOHNSON RIVET CARRIER FOR RIVETING MACHINES Aug. '31, 1943.

Filed Jan. V6, 1941 Patented Aug. 31, 1943 PATENT #F-:FICE v t i u Y"`i"f2`,..2s,14s f i.. f

iuvEr canmmtroa mvETING MACHINES `Arden L. Johnson; .ackson, llVIicli.;"assignorfto A Tomkins-Jolinson" Company, Jackson, `Mich.; a 'of Michigan transferring t rivets from applic-mn Jennery 6,194'1,fseiiiNe. 373,293

The present `invention i relates tol` riveting machines and more particularly to acarrier for a 1source to an upstanding ianvilil A "f-In Patent` No. `2163.440, to H. A.` "Tomkins,

The rod9 is slidably disposed in a bore I0 in the ram 4 and is provided with a head II disposed in alrecess'- I2. also inithefrarrrii and extendingfrom the inner` end'of the boreii). Secured to the rod 9 on a portion thereofand spaced from the ram 4 isa l.collar I3,` andldisposedabout th'e portion there is disclosed-ia riveting machine wherein of .the: rod 9 between the ram .4 andthe collar upsettable `members are` fed from ka chute to a I3 is a1 spring I4. The spring' I4 is for the pur-` carriage and are transferred by the carriage to posel of` providing a resilient driving connection an upstanding anvil.4 The present` invention between .the rod v9 and the ram -4 `so that should constitutes animprovement over the structure of 10 the. ram `4f meet. with `any interference in vits the foregoingpatent `and relates particularly to movement to theleft as viewed inFig. 1; the re details of an improvedrivet transferring strucsiliency'ofthe spring I4 willprevent any damture. The embodimentof the *invention disage from occurring. l closed `is adapted' forclinch nuts;` However, it [Theram4 is provided witlran integralupwill be understood that the invention maybe l5 standing'ramportion` 20 in which is provideda employed for `use `with any upsettable member. longitudinally extending slot 2|. `The slot ZI'h'as Accordingly,"anbbject of the invention is to disposed therein one end of a carrier `22;` The provide an improved carrier for'ups'ettable memcarrier 22 `is :provided `with a `longitudinal bore bers for machines ofthe character described. 23 in which isdisposed a rod 24. The rod 24 also lAnother object of the invention is to` provide 2o extendsfthroush the upstandins ram portion 20 novel structure for holding `upsettable members and has securedto` the outer end thereof loci: on therivet transferring carriage'. nuts 25. Disposed about the rod 24 inthe re- Still another object of the invention is to prol cess 2| and bearing against the innerY end of videan efficient structure fortmaintaining upthe recess 2| andthe Vcarrier 22 isa spring 2S. sttable members in place on thev carriage .prior 25 the springA Zotending to resiliently urge the carto traversing `movement of the carriage. rier 22 outwardly of the recess 2| but permitting Still another object is to providea transferring inwardmovement of the carrier 22 with respect ram having a recess therein for yieldably supto the upstanding` ram` portion 20. i porting the-rivet carrier.4 o i The Yupstanding rain portion 2li., is provided These and other objects `residing infthe ar- 3o with a nose`21whichbears directly on the top rangement.' combination and construction of the of the carrier 22 so that as the. carrier 22 moves parts lwill `be apparent from the followingspecirelativelyto the ram Ii,A the nose 21 slides, relacation when taken I with" the accompanying tivelyover the CorrierZZ. 1 Y i drawing, in which: Y j .i `The carrier 22 is for `receiving t on the top `Iiggl is aypartial vertical section disclosing thereof upsettable members to be transferred the invention inassociation with the anvil of a from a Suitable source such as a chute 28 to an rivetingmachine f i 4 upstanding anvil 29',` at Whichpoint work is dis- Y Fig. 2^is a `section Von"t'hle` lineII-II of Fig. "1, posed over each upsettable member as it is placed Fig. 3 isa section'onthe line IIIlf-IIIfof Fig'. 2, on the anvil and upset. Upsettable members are Fig.`4` is a section on the lineIV-aIVof Fig, 2, 40 feditothe chute 28 from a hopper, not shown, in and l i any conventional vmanner andslide `down the Fig. 5isa section on the line V``LV of Fig. 3. Chute 23 by gravityl' vThe upsettable members Referring particularly to the drawing; the ref; disclosed in the drawing for the purpose of. illusl erence character Iindicatesa-frame to which'is 45 ira/Ging the invention are Clinch nuts, although suitably secured a'h'ousing 2l l The` housing 2 is it will be understoodthatother upsettable memprcvided with an internal siiiiegivayl` 3 in 4which bers maybe employed.` The lowerrnost `clinch is slidably disposed atransferring ram `4 `for Anut slides onto the `carrier 22 and isstopped on reciprocation in a direction from left to right; as the `carrier 22 .by a stop 29;` The stop `29 is in disclosed in Fig; 1; "The raxri 4 has Vsecured to 50 the form of a rod slidably. disposed in a bore 30 thebottom `thereof byscrews5 a plate 6," The inthe housingland in the bore 3| in the frame pme s slidesdirectly on the tcp of a` base por- I. Asshown particularly in Fig. 4, the operative i tion 'I` of the frame `and the plate(ilslides beface 32 of the stop 29 is inclined inwardly vwith Death angleplates 8 between which the ram `(i is respect to the clinch nut receiving surface of the `"guided, during reciprocation, th'e vangleplates8 5`5 carrier` 22 to assist in preventing accidental rebeingsecuredfto Athe sides of `thebaseportion` "if moval of each clinchnut as it is deposited on the .Thefram 4 is reciprocated by a rod `E) `suitably carrier 22| Withthe parts in the position shown onnectedto somgreciprpcating mechanism such in the drawing, it, Will be @Vident that the Weight asa pneumatic cylinder and piston; not shown, :9. of the clinch. nuts in the chute 28ywi11 hold the clinch' nuts on the carrier against the surface 32 of the stop 29. The stop 29 is adjustable to permit the correct positioning of it each time the type of upsettable member fed to the carrier 22 is changed, sothatregardless oi the size of the upsettable memberfbeing fed downthe chute 28, the upsettable member on the carrier 22 will be properly positioned thereon. For xing the adjustment of the stop 29, a set screw 33 is pro! vided.

When the ram 4 is ready to move to the left stop 29 together with the weight of the clinch In operation as soon as a clinch nut has been disposed on the carrier 22 following the upsetl as viewed in Fig. 1, the inclined face 32 ofthe ting of a clinch nut on the Work at the anvil 29,

'the 4, is moved to the left as viewed in Fig.

lby theV action ,oiV the rod 9, actuated by some nuts in the chute 28 bearing against the clinch nut on the carrier 22 will tend to maintain the clinch nut on the carrier 22 in itsV position. However, as soon as the ram 4 starts to move, the nose 21 will engage with the clinch nut on ther carrier 22 to move it out of engagement with the face 32 and the clinch nut in the chute 2B at the side of the carrier 22. n

In order to prevent the clinch nutsv in the chute 28 from moving out of thechute 28 during the traversingy of the ram 4, thereis provided a plunger 31 disposed in a bore 38 in the housing 2. The plunger 31 has a flat side 35iA which isin the face of an inside wall 45 against which the upstanding ram portion-Zllslides, as

shown particularly in Figs, 4 and, 5. Between the inner end of the bore 38 and theplunger 31,

as shown in Fig. 3, is a spring 4l for resiliently urgngthe plungerl outwardly against the last clinch nutinthe chute 28. Thus, the column of clinch nuts in the chute 28 is maintained against sliding therefromafter the ram 4 and carrier 22 have moved outwardly from the housing 2. The last clinch nut in the housing 2 is released to permit it to slide onto the carrier 22 upon the return of the ram 4and the carrier 22 lby the action of a shoulder 42 on the upstanding ram portion engaging .with a shoulder 43 on the plunger 31. The shoulders 42 and 43 are so positioned as to move the plunger31 to the right as viewed in Fig. 3 and back in Fig. 4, just far enough to clear the clinch nut at the bottom of the chute 23 so that the weight of the clinch nuts above it in the chute`28 will force it onto the carrier 22 and against the surface 32 of the stopf29. The shoulder 43 consists of a projecting segment of the plunger 31 and normally ridesy in a slot 44 of segmental cross section rin the upstanding ram portion 22. plunger 31 in the bore 38 is, prevented by the shoulder 43 extending into the slot 44.

For the purpose of maintaining the clinch nuts lfed to the carrier 22 thereon during movement of the carrier 22, there isy provided a ringer 45 pivoted to the upstandingy ram portion 20. The lpivot consists of an elongated boss 46 having a face of hemicylindrical form disposed in an elongated arcuate recess 41 extending across the top of the upstandingl ram'portion 20. The boss 45 is provided intermediate the ends thereof with a slot 48 into which projects a pin 49 disposed in` a bore in the Vbottom of the recess 41. The pin 49 maintains thenger 45 .against lateral'movement in the recess 41. The ringer 45 is pivoted about its pivot point by a spring 5I secured. in a bore 52 in the V'lriger 45 and in a bore53 in kthe Y upstanding ram portion 2U. The nose portion Rotation of the suitable moving mechanism not shown. As the i ram and carrier 22 move forwardly, the plunger 31 is released by the forward movement of the shoulder 42 moving away from the shoulder 43 to permit the plunger 31 tok engage with the lowest clinch nut in the chute 28. At the same time the tail piece y55 of the linger 45 moves along the camming surface 55 in the housing 2 to permit the nose 54 of the finger 45 to be drawn onto the clinch nut on the carrier 22 by the Spring 5i. `W-hen the ram 4 reaches a position adjacent the' anvil 29', thecarrier 22 abuts against the anvil 29', but due to the resiliency of the spring 25, the carrier 22 slidesinto the recess 2l, while the ram y4 continues to move forwardly. This relative forward movement of the ram 4 causesthe nose, 21 of the upstanding rain portion 2i) to slide the clinch nut on the lcarrier 22 from the carrier 22 into a recess 51 on the top of the anvil 29. The ram 4 is then. withdrawn into its position within the housing 2 as shown in Fig. 1 where the oarnming surface 55 engaging with the tail piece 55 cams the nose 54 of` the finger 45 upwardly to permit the passage or a clinch nut from the chute 23 onto the carrier 22. f At the same time, the rshoulder 42 of the upstanding ram portion 45 engages with the shoulder 43 of the plunger 31 to move the plunger 31 backwardly to release the lowermost clinch nut in thel chute 28 so that the weight of the clinch nuts above it in the chute28 may force'it onto the carrier 22 to repeat the cycle of operation. While the ram 4 is in its rearward position,v;work is disposed over the clinch nut on the anvil 29 so that the clinch nut may be upset on the work in a known manner by conventional upsetting structure not shown. n

Having thus described my invention, what I desire to secure by Letters Patent and claim is: 1. A rivet carrier for transferring upsettable members fed thereto from a source tol an anvil, comprising a carriage for receiving thereon one upsettable member at a time,'a ram for transferring theupsettable member on said carriage to said anvil, means to traverse said ram and carriage toward said anvil, means for yieldably maintaining said carriage and ram in a predetermined relation but permitting said ram to be movedrelatively to said carriage upon the en gagement of said carriage with an abutment during traversing to transfer from said carriage to the anvil the upsettable member thereon, said ram having an internal recess therein in which said carriage is slidably reciprocable, and means for yieldably holding each upsettable memberr on said carriage asit is fed thereto.

2.'.A rivetl carrierfor transferring upsettable members fed thereto from a source to an anvil, comprisinga carriage for receiving thereon one upsettable member at a'time, airain having a nosefor transferring the upsettable member on .said 'carriage to said anvil, means t0 traverse .said ram and carriage toward said anvil, means for yieldably maintaining said carriage and ram in a predetermined relation for permitting said ram to be moved relatively to said carriage upon theengagement of said carriage with an'abutment during traversing to transfer from said carriage to the anvil `the upsettable member thereon, said` ram having j an internal recess therein, said carriage being movable relatively to said ram in said recess, and means fonyieldi .ably holding each upsettable member carriage as it is fed thereto. i 3. A rivet carrier for transferring upsettable members fed thereto from a source to an anvil,

` comprising a carriage, means at one side of said carriage for resiliently urgingfa, column of up- `settable members `directly onto said carriage, a

stop at the opposite side of said carriage for stopping the rst upsettable member in said c01- umn on said carriage and the second upsettable member in said column-at the first named side of `said carriage, means for resiliently holding on said carriage the `upsettable member fed thereto.v a ram, means to traverse said ram and carriage toward said anvil and to return the same therefrom, means for yieldably maintain-` ing said carriage and ram in a predetermined relationfor permitting said ram to move relatively to said carriage upon the engagement of said carriage with an abutment during traversing to transfer from said carriage to the anvil the upsettable member thereon, a plunger reciprocable in said housing extending in the direction of movement of said carriage and resiliently urged intov holding relation with said second upsettable` member tomaintain the same in its position at the sideof said carriage during transferring movement of `said ram and carriage, means for maintaining said means for resiliently holding upsettable members on said f carriage out of operative association with said carriage during the `feeding of upsettable members onto said carriage, and an operative con-` nection between saidplunger and said ram for moving said plunger out of engagement with the upsettable member against which it abuts to permit the said upsettable member to move onto said carriage, said last named `means being operative upon the return of said ram `to starting i position.

4. A rivet carrier for transferring upsettable members fed thereto from a source to an anvil,

`comprising a carriage,ua chute terminating aty to move relatively to said` carriage upon the `engagement of ,said carriage with an abutment 'during traversing, to ytransfer from said carriage to the anvil the upsettable member thereon, a plunger reciprocable in said housing extending in the direction of movement of said carriage and resiliently urged into holding relation with said next to the lowest upsettable on said Y member to maintain the same inxits position at the side of said carriage duringtransferring movement of said ram and carriage, means for maintaining said means for resiliently holding upsettable members on said carriage out of operative association with said `carriage during the feeding of upsettable members onto said carriage, a shoulder on said ram, and a shoulder on said plunger,'said` shoulder on said vplunger being rin the path of movement of the shoulder on said ram formoving said plunger with said ram when said ram moves to its starting position for moving said plunger out of engagement with the upsettable member against which it abuts to permit said upsettable member to move onto said carriage.

5.` A rivet carrier for transferring upsettable members fed thereto from a source to an anvil, comprising a carriage, means to feed upsettable members, 'one at a time, to said carriage, an axially positionable and slidable member comprising an adjustable stop at one side ofY said carriage for positioning upsettable members as they are fed onto said carriage, said stop having a substantially flat face inclined to eachdirection of movement of said upsettable member for limiting movement ofeach upsettable member' as itis fed onto said carriage, `and for"` `restraining movement of each upsettable member against said stop from movement fromsaid carriage, a ram for transferring each upsettable member on said carriage to the anvil, means to traverse said ram and carriage toward the anvil and to return the same therefrom, yieldable means for maintaining said carriage and ram in a predetermined relation for permitting said ram to be moved relatively to said carriage upon the engagement of said carriage with an abutment during traversing to transfer from said carriage to the anvil the upsettable member thereon, and means for resiliently holding on said carriage the upsettable member fed thereto.

6. A rivet carrier for transferring upsettable members fed thereto from a source to an anvil,

l comprising a housing, a carriage, means to feed upsettable members one at a time tosaid carriage, a stop member at one side of said carriage for positioning upsettable members as they are fed onto said carriage, said stop member being adjustable toward and away from said carriage, and being slidable in said housing, means to ilx the adjustment of said stop member, said stop having a substantially at face inclined to each direction of `movement of said upsettable member for limiting movement of each upsettable member `as it is fed onto vsaid carriage, and` for restraining movement of each upsettable" member against said stop from movement from said carriage, a ram for transferring each upsettable member on said carriager to the anvil,`

means to traverse said ram and `carriage toward the'anvil and to return the same therefrom,

a predetermined relationforpermitting said ram table member fed thereto.

said ram being movable from and into said housing as it is traversed, yieldable means for maintaining said carriage and ram ina predetermined relation for permitting said ram to be moved relatively to said carriage upon the engagement of said carriage with an abutment during traversing, to transfer from said carriage to the anvil the upsettable member thereon, and means for carriage the upset-` resiliently holding on said L. JOHNSON.

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