US2368394A - Apparatus for flanging openings in tube type headers - Google Patents

Description

Jan. 30, 1945. 2,368,394

. APPARATUS FOR FLANGING OPENINGs xN TUBE yTYPE HEADERS l J. G. zuMMAcH 3 Sheets-Sheet l Filed May 3, 1943 fsf? /35 H .0 m4 TM mz G N w J ATTORNEY Jan. 30,'1945.: J. G. zyMMAcH 2,358,394

l 'APPARATUS FOR FLANG'ING OPENINGS IN TUBE TYPE HEADERS Filed Mayv 3, 1943 3 Sheets-Sheet 2 30 INVENToR.

Jan. 30, 1945. J. G.zuMMAcH APPARATUS FOR FLANGING OPENINGS IN TU BE TYPE HEADERS Filed May 3, 1943 5 Sheets-Sheet 3 m mM w mnw WL m IZ ,y T if., G N w J Y, B

' after described and claimed and shown in Patented Jan. 30, 1945 APPARATUS FOR FLNGING OPENINGS IN TUBE. TYPE HEADERS y John G. Zummach, Racine, Wis., assignor to I Young Radiator Company, Racine, Wis., a

company of Wisconsin Application-May '3, 1943, Serial No. 485,548

claims (o1. 15s- 25) It is difficult to flange openings outwardly in tubes, especially when the tubes are long and have a number `of closely spaced openings therein to 4 be flanged.

The present invention 4relates to convenient means for flanging -any number of closely spaced holes in tubes of any length.

added on balls 2B for a purpose whichA will hereinafter appear. y l n A head 35 having a holding shank 36 is adapted "tope" attached to the punch press head. Rec- An object of the present invention is to uniformly flange the openings in tubes in groups in a simple and leconomical manner.

To these and other useful ends,v my invention consists iof parts, combinations ofv parts, or their equivalents, and mode of operation, as hereinthe accompanying drawings in which: l

Fig. 1 is a partially sectioned end view of my device,v the section being taken through one of the openings before being flanged.

Fig. 2 is a partially sectioned front view of my device, the section being taken through one of the openings before being flanged.

Fig. 3 is a view similar to Figure 1 partially sectioned through a flanged opening.

Fig. l is afractional View of my device sectioned on line 4-4 of Figure 2 with the flanging device removed.

Fig. 5 is an enlarged detail illustrating the tube positioning device.

Fig. 6 -is a View similar to Figure 5 taken through a hanged opening.

\ sov As thus illustrated, the device comprises abase plate I0 adapted to be attached to a punch press base to which a support base II isrigidly attached, having preferably a trench I2 adapted to embrace the lower half of tube I3. Tube I3 is.

first provided with one or more spaced holes I4. Two holding blocks I5 and I6 are slidably held on support base II by means of straps IS-I an cap screws I9.

Blocks I5 and I6 are curved at their inner lower corners as at 26-26. y These curves may emf brace tube I3 gs follows:

Blocks I5 and I6 are out-away as at 22 forming circular openings which align with holes I4- in tubes I3 when the blocks are gripping the tube. In the figures, I have shown my device `as adapted to flange three tube holes simultaneous- 1y; therefore in this design there will be three pairs of cut-away portions 22 in blocks I5 and 4the three holes I4 in tube I3,

' opening I4 (see Figure 5).

tangular bars 31-31 are suitably secured to head 35 as at 38. These bars are adapted to slidably t into openings 25 and are shaped as shown in Figure 3, having a narrowed end 39 formed by angles 40 which are adapted to contact surfaces 26 when head 35 moves downwardly so las to overcome springs 29 and move blocks I5 and I6 `inwardly to the position shown in Figure 1 so as to grip tube I3.. Blocks I5 and I6 are adapted to be moved outwardly by vpressure of springs 29 when'membersSl are raised tothe position shownin Figure 3; .thus to move far enough away from? tubef|3 to clear' the flanges formed in the tubes as will hereinafter appear and so the tube can be moved `endwise to the next ,groupy of holes f I provide preferably three shanks which are secured to member 35 in line with the three openings formed by cut-away portions 22 and with Members 56 are split as at 5I and normally assume the shape shown in Figure 1 and having near their lower ends cone shaped projections 52--52 and shank extensions 53-53 with projections 54 at their lower ends adap-ted to be pressed into sleeves 55, projections 54 being tapered as at56 kso they will readily enter the sleeves.

Before this operation, sleeves 55 are previously placed in openings 51 in a shaft 58 which is about the length of tube I3, these openings being arranged so there is one in line with each The tube and shaft are held together and in 'alignment with members 5U by means of a bracket 6I] secured preferably to one of members I8 (not show) and positioned so keeper 6I may be inserted into aperture 62 and through hole I4 and into sleeve 55,

member l being positioned so holes I4 will be in alignment with members 5I).

The holding device shown in Figure 5 is suity able for holding .the tube in position before the holes in the tube are flanged. I provide means for holding the tubes into position after being flanged as illustrated in Figure 6. f

Members 5l are preferably provided with ledges 63 lon which sleeves 55 rest; thus when head 35 is moved downwardly, projections 54 will contact the sleeve and move together to the position shown in Figure 3 and after passing through the sleeve, projections 54 will move to the position shown in Figure 2.

be moved for the next operation and member 6l inserted to lidld thetubean'd shaftinrpbsitin for the nextpperastion. l

It Will be seen that there Will come a time when a flanged opening must be used for locking the tube and shaftfintofposi-tion.).eInxlthis event, a keeper 61 may be insertedlinto'ropening 62 so the flanged opening and opening 51 are engaged. a,

Clearly many minore-detail changes mayy be made without departing from the spirit and scope of the present invention, asmecited matiza-appended claims.

Having thus shown and describedrmyrinvem Jtional claim:

1. A tube opening vil'angingdevioe oetliemlass ..describeehcomprising a, stationaryflbase: plate and l an, oscillating` headyY s'aidabase platev hav- H`, ingJolocksslidably mounted thereon .withmeans l; on their ,innen surfaces for `grippirig-theltubewhen movedtogether, ,adiacentilcut-awawportions in Q said.blocks.adapted isoform;circularnopenings .l soniewhatlar'ge'r, than .the .holes in.theltube to J be flanged,.a.shaft in,..the`tube and .openings in the shaftpsomewhat largercthainthe holes inY the tube,` sleeves inisaid.shaitopenings, aynumber of @Dlungers secured to said-head, .theiloyvenends ladapted tovmove thrughisaid circular V.openings and thefholes in the'ttube and said sleevesaand i having means 'to lock theipliinge'rs tothe sleeves p when in theirlowest .positions ,wherebywhn the oscillatingAhead is .moved upwardly, the. .sleeves jfwill be caused toforiii anges around the ,holes and Within the` openings'forrned insaid. blocks, manually operated. anchoring: meansadapted to hold certain sleeves and holes in the tube in alignment with the adjacent circular openings.

2. A device as recited in claim 1 including;

means associated with said blocks and head '5 adapted to cause the blocks to firmly engage the tube when the head is in its lowest position and to move the blocks away from the tube when the 3,-; 'head'ismrcved to itsghighest sposition.

3. A device as recited in" claim `v1 including;

-10 means whereby when said plungers are in their highest position, the sleeves will 'be released 1 miautomaticallyu A. A tube opening flanging device of the class described, comprising a stationary base plate lgwandf anfosoillating head, said base plate having l .blockSfslidablyf-mounted thereon with means on -"""theirinnersurfaces for gripping the tube when z` movedf'l'itogether, adjacent cut-away portions in said blocks adapted to form a circular opening gsomewhat larger than the hole in the tube to be ,d .flangediwhenitheblocksrare .grippinguthe tube,

4. a shaft inrtheltube and aneopening in thevshaft o. .somewhatl largerrthan; the:.hole inathel itube, a sleeve inr said shaft opening, a plunger'ssecured 25, tosaid .headVv-Lthe loweraendiadaptedf to move throughlsaid circulark openinglandzthe hole in the tube and said sleeve..and,.having,=rneans to,;lock L ...theplunger to .the sleevewh'errin itslowestposition,

',Whereby'. when theoscillatingfhead .is moved*Ik up- 30 wardly, the sleeve. will be.caused .to form-,a ange v.aroundthe..l:1ole and. .Within the `opening formed in,-said;blocks meansgadapted to hold :thehole in .theltube and the opening inthe 4shaft in -alignment with said plunger, rmeanseassociated; Iwith 35 said blocks andSnea-d adapted to vcause,thelolocks to rmly engage the.' tubelwhenv the: head is in its lowest positionl and to movethelblocks.- away from the'tub when. ther plunger islmoved to its highestr position.

f .IDI-IN GJ" ZUMMACH.

Images