US1135534A - Flanging device for sheet-metal blanks. - Google Patents

Description

P. KRUSE.

'HANGING DEVICE FOR SHEET MEYAL BLANKS.

y APPLICATION FILEDl DEC.3I 1914.

Patented Apr. 13.1915.

2 SHEETS-SHEET `1.

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errer, zinnen, or esooiLYN. new vomi, essroron ro n. W. Buss oomreirr oe snooimim, new geen FLNGENG EEVCE FOR SHEET-EET@ Speccation of Letters Patent.

ilpplcetion allee Eecembe: 3i, wie. Serial io. 879,812.

j?) "unioni it may concern Be it l-:noT-:n that i, nos'e, citi zen the YLinited States.y residing et Brooklyn. cosinty of Kings. and State of liiew.

positie edge oi the blank whereupon the in- .erhool-:ed 'flanges :iro compressed or {irt- V tened ont form the desired lap joint. This 'ij-shaped flange has hitherto been niece in it leest tivo operations end f blenlfwhile with the presi die ooinplete operation is peront single position of the hlzinlr,

.Torn/red in so .that the necessary mechanism is simplified und its output increased. Y

the iiocoinpanying drawing igure l ntion of o can lianging device i. inrention; 2 is a side thereof; plan vier: oi one oi lie suA pori-ing one of the iiange iforinersz, Fig. si e cross section on line li- 4. fifr n. Eig. e diagrammatic section through Lange-forming elements, show- 1n7 the ill nnilzmged lvlenlr in position; W

r il. i5 a similar seotion showing the blank flanged by the rst former; Fig. 7 o, similar seotion showing the free delige-shank bent inward by the second former, and Fig. 8 ai view of s lienged blank lient into shape and showing lop joint prior to compression.

s shown in Fig. 7, the oompletedlonge is of substantie-l -sliope,the slianlzs il?, l1 oonvergiiig tovs'ard each other rom the web l l. This web extends at on angle to the plone of 13,t'ne latter being more par# tioulorly designed for the production oi -oans or "ooxes of oblong iorin es illustrated in Fig. 8. :is the longitudinalsenin should estema?. along one of the sharply curved ends o the nox the inclined position or the the following ment of shank 10 and web 12 oi the nished ilenge. The perimeter 18 of groove l5 ex*- iends in substantial parallelism with perimlzitened Apr. EL3, idillio..

eter i6. Die le is adapted to perform a slight vertical movement thereby acting as o. elainp or pressure bar for firmly holding the blank i3 to a. fixed support 19. i ter the iilanlr has been properly placed upon support 19 in any Vsuitable manner, die i-l is Caused to descend in manner hereinafter more fully described, thereby clamping the blank in position. A first former 20 the operative head oi which corresponds in outline to that ci groove l5, is now advanced in parallelism with the groove sides 16 and i8 until the blank portion 13L formerly project-ing beyond the die (Fig. 5) is forced into groove l5 (llig. (i). Former 20 is next retraoted whereupon a second former 2l movable et an :ingle ro former l0 is" adronced to engageV the protruding end voi shank ll und thereby turns it inwardly and toward shank l0 until it has assumed the linel position illustrated in Fig. '.7. This inward bending of shank 11 is facilitated owing to the prior formation of the crease 22 by means oi' former 20..

The properly timed movements .o the above mentioned parts 14, and 2 are brought about as followsz-ln the machinev rame A, there is journaled o. shaft 23 that receives continuous 4rotary motion in any convenient manner. Upon shaft 23 is irmly mounted o. pair of eccentrics Q-i, 25 adapted to respectively actuate former-s 2G, Q1 and n com' 26 adapted to operate die 14. The letter is carried by the downwardly extending arm ZT of o two-erin lever 38, fulcruined at The rear arm of this lever is engaged by aork 3l which is oonneotedtlnough an adjustable rod 32 with another forli 33 straddling shaft'23, fork 33 carrying seam roller 34 that engages cam `26. lt .will oe seen more particularly from /lOl located above and back of the die-groove 15 so that after the completion of the substantially U-shaped blank-tlfuifge. the diev 14 is not only raised ofi' `blank l?. b nt is also swung;r forward, e. laterally away 'from said llange. In this way -theblank is not only released of vertical pressure but is also relieved of any lateral strain to n'hieh it may have. been subjected n'lhile p'arl; thereof. was draivn into groove lby former 2f) so that the Subsequentremoval of 'the llanfred blank iS facilitated: i Q

In a suitable iin-lined ;uid'le. way l5 of frame A is reeiprewably niountqd a carrier 3G to which the former 2l) iff-f attached bv screws 37. Within a suimble'reeess a earrier 36, there is mounted a slidefS toreed outwardly by a pair of springs llitthat are seated within opposed sockets l0. 4l'. ot' carrier 36 and slide 3S reslwctivel'v. The outward movement ot' the latter is limited by a nut l?. of a bolt 4?) that extends loosel)Y through slide Il. and is tapped into carrier 86 the bolt being fixed in position by a pin 44. Slide a' is provide-d with a pair ot elongated openings-t5 aee amnodatingthe knob-:-46 of levers fl? earried b v a eonnnon -hnb 48 that turns loosel)y on a shaft 49.'

Hub 48 is t'in'thern'iore provided witha forked arm 50 to which. is adjustably pivoted at 51 one end oll a lengthwise regzulatable connecting rod 52. the other end of rxhieh is attached to the. strap 53 ol eeeentrie il. n

As thus far described it will be seen that during' each rotation ol shaft- Q carrier Ill is onee reeiprocatedwhereby the former J0 is first advanced into engagement with reeess 15 to forni a flange as shown in Fie. l' and is then retracted. liv the interposition of springs 39 between slide 3S and carrier 36 the necessary connection is provided for yieldingly forcing the former 20 into the die-recess.

Atteilormer 2() has been retraeted. former "2l is advanced to bend the free flange-shank inwardly" (Fig. 7). the construction for actuating former 2l being as follows z-In a suitable horizontally extend- -ing guide way 54 of frame A 'is slidably mounted-a carrier to whieh the former ,-2'1 is attached by screws 5G. (larrier a5 is. by springs 57 yieldingly connected to a slide 5S while the. parts 5S are held together bj ya bolt Dat-arming a nut ad. the construction being' a substantial duplicate. ol' the 'carrier or former i205 Slide 58 is ai:- tuated by levers (Sl engaging correspondingrr apertures 62 ot' the. slide'and formingr part ol a hun (SS that turns loof-'ely on a shaft (il.

formation ot' the U-slialred flange along one vlange-Jr'orming; means frm-n the blank, and flneans 'lor turning one of said shanks to- Illib (33 is furthermore provided with an ear edge of blank 13, a hook'. is formed the opposite edge olr the blank the 'means for performing this operation being not shown as they do not form part of the present invention. 70

.blank in position, means for forming on said blank a Substantially {JL-shaped flange having a pair ot opposed shanks andV for subsequently NLadraw-ing a` portion ot said Ward the other shank subsequently to the withdrawal ot' said portion of the flangeforming means from the blank and` While said blank is still engaged b v the, elamping '135 means.

Il. :t flangia-gy deviee for sheet metal 'blanks eomi'irising means 't'or elampinga blank in position. means for forming a suhr-:tantially U-shaped flange along one. edge.. Loo ot' said blank andgfor subsequently Withdrau'iire a portion of said flange-forming means l'roni the blank. said flange comprising! a web. a hrs-t. shank connecting said web 'io the unbentblank-{mrtioin and a second 105 shank extending .in substantial. i'iarallelisni with the first shank` and means for turning f-aid see-ond shank toward the first shank snhsefplently to the withdrawal of said pfortion of the drinne-forming means from the 110 blank and while the blank is Still 'engaged b v said clamping means. n v

-l. .l Hanging devineAi fori'sheetf' metal blanks comprisingnieans for-clampingi a blank in position. means for forming aasnb-h 11.5 slantiall;Y U-shaped'llange along one'edge. of said blank and Jfor subsequen't'fl)i7 Withdrawing a portiowot said thingie-forming means 'from the blankfwsaid flange comprising-a web that extends at an angle to the plane offiz() the blank, a first shank connecting said njeb`` to the unbent blank-portion` and a second .shank extending in substantial .parallelisnrv with the first shank, and means for turning .said second :shank vtoward the. first shanl f i subsequently to the withdrawal portion, of the flange-forming means-.fromfthe blank 'and'while said blank is stillengiaged by saidelampingmeans.

5; Ail-Hanging' device for nant-metatags' reciprocal first former adapted to force 'outer shank, a reciprocal second formeradapted to engage said outer shank, subsel quently to the Withdrawal of the first former therefrom, and means for With drawing the die from the support in a direcf tion extending upwardly from the support and laterally away from the formed blanlb flange, said withdrawal taking place Subseformera from the blank.

i PETER KRUSE.

Witnesses FREDERICK L. COLWELL, Jr., ARTHUR E. Zmrrn.

vquently to the Withdrawal of both of said 20

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