DE2100444A1 - Method and device for welding hollow bodies made of metal strip - Google Patents

Description

Institut Elektrosvarki imeni B. O. Patona Akademii Nauk Ukrainskoi SSR

Method and device for welding hollow bodies

made of .metal strip

The present invention relates to manufacturing technology of welded constructions and especially on procedures for the production of welded closed vessels Metal strip and equipment to carry out these processes,

The invention can be used successfully in the manufacture of flat heat exchangers welded from molded parts, 2 ·. Radiators, Evaporators for household refrigerators and cooling tube sockets electrical transformers. The invention can be welded to the same extent in the manufacture of others Containers, ζ «B. Petrol tanks for automobiles, lids for giiterxva ^ on hatches can be used, among others.

The currently known methods for manufacturing ge «-

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welded closed vessels made of metal tape ropes the following operations; Unwinding the FetaHbänder, Foruen individual vessel parts on each band, folding the vessel obtained parts, cutting the ribbon BDLt the collapsed container parts to each ILlbfabriJcaften and subsequent welding of these ^{before deriving} from dan cut-off semi-finished products be ^s "fc parts along its periphery, receive au to finished vessels ,

k The appendices for performing these procedures contain a Device for shaping the vessel parts on each belt, for example in the form of a double-acting Prοase, device to increase Merging the tapes to form the parts molded on them to fold up a future container,!. slice to cut up of the band to individual semi-finished products and machines for welding the semi-finished products along the circumference, both longitudinal and Cross seams are welded »With these systems, if

* entered

(Fitting must be welded to the vessel, devices for Welding this valve at the end of the production line - Arranged on the machines, select the parts along theirs Weld the circumference together to form a Gofäß

By means of the known methods and systems, no continuous can Process to be carried out in the manufacture of vessels, since the shaping with the help of pressing tools Tape between jobs during the pressing process. *> · -Non aes

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Must be PreßwerkzeugSangehalten _e Therefore, the tape will always cut before welding the Iiängsnälite because when welding the tape must be fed at a constant speed "

Such a sequence of operations has diminished Efficiency result, since the processing stations during the pushing of the semi-finished product of the device

c ^en

to device stands still and also additional devices for »moving the cut half-abbots during are required for the manufacture of vessels

DP, £ invention is based on the task of driving such a method for the manufacture of welded vessels from metal strip and to develop a device to carry out this ver f to create the continuity of production Ensure vessels

a The problem posed is achieved in that at ^v Ver -,.

go to the manufacture of welded vessels from metal strip the following operations are carried out? Unwinding the Metal bands, shape individual vessel parts on ä® <ie2i band and Combining the haste received in order to make the future out of them

'^ that

To weld the vessel together, ^{according to the invention v} Shaping the vessel parts, putting them together "and welding these parts directly into the unwound and proceeding at a constant speed -

of the moving belts / ierjWonacli ^ finished containers from the belt

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is obtained by cutting off the latter. In the lay According to the invention, the device for shaping the vessel parts and the device are for performing this method for welding the transverse seams on independent, non-powered ones Mounted support bodies, which perform a reciprocating movement along the belt, the device for welding the transverse seams on a supporting body provided with a drive

* is set up that they are also wide in the direction of the band can move

In the above-mentioned procedure, if a special fitting, e.g. a socket, has to be welded to the vessel, this operation is carried out before the vessel parts are put together. This makes it possible to use a high-performance resistance welding machine to weld the fitting

"To eliminate the saturation of the bands and to avoid that errors add up as a result of inaccurate dimensions of the ge - ioruteii semifinished products, it is useful to υ ο in the manufacture of vessels from two bands on spring tape between two eu future Gc-barrel w -. ^ f old to proceed _t <J: rrc: i ßpjtüen nach ueraelbei ·. Seiue rfuaen.

.IvG is. ii \ VGclnn5; .vi _t :, uii. ι-, ηυχι die Fortbevve ^ un ^ G ^ ecej / vdnd:!: jl-c-it Uli- Vorriulituii; ' zum i.-schwei ^ en ügj ' i-.y.iti-n "'>'■,(> njt <lcr Lau.fr ?? -

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fe Of ^ JÖiNAL

speed of the belt as a drive for the! Prague body on which the above-mentioned devices are mounted, the continuously moving belt itself

to use·

the following is provided to aid understanding of the invention it shows a concrete embodiment example, considered with reference to the accompanying drawings

Fig. 1 shows the principle of the system for performing the erfindungsgeraässer Procedure,

FIG. 2 shows the tape with the individual stages in the manufacture of a radiator on a system according to FIG

! ig, 3 the side view of the band with pressed into it Wrinkles and

Fig. 4 is a plan view of the tape after the execution of Cuts in the same »

The essence of the method according to the invention consists in the following

On those moving at constant speed

each other

Ribbons are formed ^ 'corresponding containers are then formed the tapes collapsed in this way to the future Vessel to bildpn, continue to be the collapsed parts

welded to their extent and then the finished 109830/1289

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Container cut off from moving tape The following is a method of making

flat. Steel radiators and the facility to carry out this Procedure considered.

Steel belts 1 and 2 (Fig.1) are targeted by rollers 5 4 handled, which set in an unwinding device 5 a These tapes are then placed in a device

each other
6, in order to form corresponding parts of the future radiator here on each strip, parts being manufactured, the shape of which is shown in field "a" of FIG. 2. Any known device, for example v / A double-acting press can also be used

a
is to ensure ^v kontinuierliehen process when manufacturing the heater, placed on a provided with propulsion support body which is embodied for example in form of a carriage 7, and a Hin - movement along the running belts 1 and 2 performs "The running speed of the belts to the Speed when welding the longitudinal seams.

Behind the press, if nozzles are attached to the radiator -

have to be welded, a welding machine 8 barked up,

also which is mounted on the wagon 9 the ^ a back and forth movement runs along the belts. »Be through the machine Connector 9 'on every radiator! notices, wia dioa I

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EeId "b ^u of Fig.2 ab _o ebildet.Dans get into a Vorriclitung 10, where they are brought together in order to put together the he testified radiator parts. For this purpose a device consisting of rotating rollers can be -

to be used young «

Then the merged tapes arrive in a goal direction 11, v / o the radiator parts stapled together by spot welding so that they now have a shape

obtained, which is shown in field "c" of Fig. 2. Furthermore, the tape with the radiator parts fastened to one another by tack welding goes into a device 12, where two longitudinal seams are welded so that the radiator parts are now given a shape, which is shown in field "d" of Fig. 2. Resistance seam welding machines are most expediently used for welding the seams. The welding rollers of these machines are set in rotation by their friction on the moving belt. Then the belt arrives in (Sine device 1j3 »Where the transverse seams are welded. This device is a resistance seam welding machine which is mounted on a supporting body which is not provided with a j & iitBieb, which is designed in the form of a wagon 14 and performs a back and forth movement along the belts. Here, the machine placed onto the car _for which it has the opportunity to _f uernähte to during welding of ^ -

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additionally shift in the direction of the bandwidth · To this

further

End, the machine is set to einenvWagen 15, which deals with - can move partially wheels 16 on the carriage 14 »iTach welding the transverse seams reaches the tape with the along the entire circumference welded radiator parts, as shown in box" e "of FIG. 2 is shown, in *: a device 17, v / o the finished vessels are cut from it, as shown in field "f" of FIG from strip to sheet metal, then the finished containers are transported away by a conveyor belt 18 for further processing and, for example, get into a device 19 for testing the weld seams of these vessels for strength and tightness. Devices are driven train rollers 20, which are arranged at several points along the belt.

In order to match the speed of movement of the gate direction IJ exactly with the speed of the belt during welding, the belt itself is used as the drive for the support body 14. For this purpose, a gripper 21 is rigidly attached to this support body, preferably the unit the .bund couples *

Ribbons are used when making the vessels which sabotage ■ exhibiting each of the bands before folding folds 22 (Fig.j5) pressed in, their Points are on the same side or become wedge-shaped Incisions 25 (Fig. 4) made. These folds or Incisions are made between two future radiators at the points of separation of the same. Through the folds v / earth Fixed errors that caused deviations when merging the bands as a result of the molding of semi-finished products with dimensions, as a result of different Running speeds of the belts in the devices intended for shaping etc. can occur »

In this way the above-described according to the invention make possible Process and the associated system, vessels at kon continuous To manufacture locomotion of the belt, which makes this system higher performance than the known systems he keeps.

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Claims (1)

EÄ'iiaTÄNSPRÜCKE [1, JY Learned about. Manufacture of silenced closed “Jars made of metal tape, in which the following operations are carried out are: unwinding the metal strips, shaping individual parts of the vessel on each ribbon and joining the received parts in order to weld the future vessel together from them, d a - the characterized by, duss ^v forming the vessel parts, putting them together and welding these parts directly onto the unwound and at constant speed the moving belts (1, 2), after which ^ finished containers can be obtained by cutting from the tape. 2 · A method according to claim 1, characterized in that particular prior to folding of the container parts ·. ^ ^ Fitting, in particular connecting piece (9 ^#) are welded to these to. 3. Method according to claims 1 and 2, characterized in that when making vessels from two bands, transverse folds (22) are provided on each band (1, 2) between two future vessels, the tips of which are on the same side . 4 » Plant for carrying out the method according to claim 1, ^a * "a the ^ arrangement for shaping the vessel parts on any 109830/1269 direction for merging the tapes in order to to put together a shaped part for the future vessel, and ^v Before the device for welding the vessel parts together, characterized in that the device (6) for shaping the vessel parts and the device (13) for welding the transverse seams on independent support bodies provided with a drive (7 uncL 14) are mounted, which perform a back and forth movement along the belt (1, 2), with the device (13) for welding the transverse seams on the supporting body (14) provided with a drive so that it is positioned can also shift in the direction of the bandwidth » System according to claim 1 , characterized by the fact that the continuously moving belt (1 or 2) itself is used as the drive for the support body (14) on which the device (1 ^) for welding the transverse seams is mounted is used.