DE1652824C3 - Process for edge welding of sheets folded to form a space - Google Patents

Description

for example a threaded spindle (8). under

in the upper and lower edge area ^ lhl ^ ti ^ SotetMrfjnd

to

long welded edges (4): ^e

2. The method according to claim. ^d ff " ^{rch shows} that the sheet metal edges (4) m, J ^ R are flanged, those in the immediate

burner (7) takes place.

_th prepare. " _Wpiten do occur with users

^^ Schw.er.gke ten step _e

_a dungde H ^^ jjfch cumbersome and Handschwe.ßung ^^ "^ hineUe Verschwei _ze itraubend. The" 8 «« «« J _Schwiering rigkeilen in _{Ssung about} ^ other hand, e-nebhche ^ ^^ g ^

_{if from the} sheet metal edges 4

^Worked ? Sn ¹ SuSSX the two sewing ends ahead which r , basic ο _chine „ _en welding

fi must be tightly welded

Frfindune relates to a method for edge trimming_ the _present invention is the creation

mmmm ^ e

nalhden construction conditions

sÄ ms »

· _{B |} * _chkame " _m i, tels roles e," gebordel.

Example illustrated. It shows

F i g. 1 shows a device for carrying out the method according to the invention in a schematic perspective illustration,
F i g. 2 the view of a shaft of a Weilenkessel, F i g. 3 shows a section along AB through FIG. 2, fig. 4 is a view from above of a device for the simultaneous crimping and welding of the edges.

In the drawing, 1 is formed by folding a sheet metal strip at regular intervals Wellen ek.es wave bowl. The upper one, folded The end of the waves is denoted by 2. The front edges are beaded at 3 so that they meet each other adjacent sheet metal edges face parallel to each other in pairs. In this designated with 4 The subsequent welding takes place in the edge area. The in F i g. 2 of the drawing reproduced A front view of a fold clearly shows the upper loop-shaped as well as the lower triangular-shaped opening 5 or 6.

According to the invention, the edge 4 is welded using the gas welding process a welding torch with a welding flame cone bridging the tolerance range of the edge gap, by means of a machine-operated feed

"5 bes is guided along the edges to be welded with a delay in the upper and lower edge area until possibly brief standstill. For this purpose (see FIG. 1) a burner 7 is provided which is attached to a threaded spindle 8 and a frame 9 by means of guide plates 10. The threaded spindle 8 is driven via a bevel gear set 11 by a motor 12, which is controlled by limit switches 14 or 13 arranged on the frame in such a way that the burner 7 is kept idle for a short time in the upper and lower end regions of the shaft. After the shaft has been welded, either the shaft wall or the frame 9 is advanced by a shaft spacing, whereupon the process described above is repeated in the same way.

A device for the simultaneous crimping and welding of the corrugated edges is shown in FIG. 4 reproduced, in which the same parts are denoted by the same reference numerals as in the preceding figures are. The flanging takes place here with the aid of pincer levers 15 which are actuated by a hydraulic cylinder 16 be operated. This takes place at the same time or in immediate chronological order during its closure Welding the wave edges by means of the welding torch 7.

For this purpose 2 sheets of drawings

Claims (1)

Patent claims: _■ Ρ, "γ education area gegeneinanderlieweils paarwe.se for ^ Bjau 8 _verschwe eats. The edge of the edge "emgeborde" _Maieria , _claim ^ l has one! ern ^ ^ _trap bending, as a result, Formation of an interspace l at their crimped and flat edges, for example: for edge welding of corrugated boiler walls by means of a flame moving past the edge to be welded under speed control ω. thereby gekennze.chnet. f ^ß welding in one operation nut reaching a B ^ * J? £ _F ne "IU aneinanreichen the flat at ¹ Jg _{Q is a de sharp. enforces} . From dwng ^ _{lower Fk} ^ Bend theM ^ lechb ^ area not possible so ^ ^^^^^ ^^^ ^ _tAl , the » _the crimped reaches w.rdjnfogedesser 8 _ilt , _{eren range n§} . _Kant s sheet metal folding only un ^ _{n hunt them.}