DE6944708U - DEVICE FOR CLAMPING PIPES. - Google Patents

Description

Dipl.-Ing. A. Spalthoff 4 3 ε s s ε ν ι. the

Patent attorney Pelmanstrasse 31

Box 1533 Telephone (02141) 772008

please indicate in the answer

Eisen- und Metallwerke Ferndorf Gebr. Bender, Ferndorf

"Device for Einspa nn en pipes"

The invention relates to a device for clamping Eon- ren, preferably on pipe end processing machines.

Pipe end processing machines are used in large pipe production known, on which the two pipe ends faced and with welding edges for the later to be welded together the pipes are provided. Such processing machines v / iron two drive units on a common bed, which can be moved to the length of the pipe by motor. There is one each Assigned clamping device for the pipe to be machined. Headstocks are also provided at both ends of the bed, which can be moved separately and accommodate face plates at their head ends. The face plates are adjustable Equipped with knife holders. The processing of the pipe edge takes place thereby instead of the two carving steels clamped in the knife holders being moved to the edge of the pipe with feed.

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According to the current state of the art, it is only ever possible the outer pipe diameter set up for the machine to edit. The processing of a different pipe diameter in the Viechsei requires a conversion and conversion of the machine ahead of the resulting loss of production is not portable. One was therefore forced to use either two or several machines that were set up for the respective pipe diameter were to be used or the pipes to be stacked and processed later, which for reasons of space in the in most cases it is unsustainable.

The object of the invention is to create a device for clamping pipes which avoids the aforementioned deficiencies and machining alternating from tube to tube with different Hohrdurchinessern as well as different pipe lengths on one and the same machine made possible without relying on the tried and tested Eunduaspannuas must be dispensed with.

Enjoyment of the Scfinaung -ferLrd achieves this in that the device neärer -e has clamping jaws opposite one another in pairs with different Sriinnauagsradius. Thus, for example, two pairs of clamping jaws closer to the OGex * can be pre-formed on each processing nozzle of the Mascjfalne, which are put into action depending on the hob ^ itrcnaessei * who is processing. When changing from Sobx * to gohr with a different diameter, it is therefore only necessary to apply the clamping jaws with the appropriate radius of measurement, so that processing can be carried out at the same time.

The clamping jaws are advantageous in a common housing arranged, which in the bed of the processing machine can be moved in the longitudinal direction, so that an adaptation to a wide variety of pipe lengths is possible.

According to a further feature of the invention, the individual Clamping jaws of a pair of clamping jaws can be moved together one after the other, where the first closed jaw against a fixed one The stop in the housing runs and thus the axially correct pipe liner is always guaranteed.

One embodiment of the invention is on. Hand drawing explained in more detail, and? was shows:

Pig. 1 is a view of the processing machine and FIG. 2 is a side view of the clamping device.

With 1 the common bed of the processing machine is referred to, on which the two drive units 2.5 are mounted, which can be moved by motor along the length of the pipe.

The two clamping devices 4 and 5 clamp the Hohr 6 tight. The headstocks 7j8 can be purchased separately and can be used with your Head end cLLe PlanseiJben 9, Io auf- The PlanseiJben are ax adjustable Knife holder 11, 12 equipped.

over the head of the son who

6344708-4.173

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Res 6, the two drive units 2,3 ait the clamping devices 4,5 and depending on the pipe diameter either the outer pair of jaws 14 or the inner pair of jaws 15 brought to jam. In the illustrated embodiment only two pairs of clamping jaws are shown, but their number can be expanded as required. In a common housing 13 the individual pairs of jaws 14, 15 are arranged, which each consist of two opposing clamping jaws. When the clamping jaws are actuated, that is, the moving together and Unfolding can be done hydraulically, for example. Depending on the pipe diameter that occurs, is shown in Embodiment either the pair of jaws 14 or 15 brought into use. The jaws of the individual pairs of clamping jaws 14,15 can be moved apart so far that the Easy pipe passage when changing the pipe diameter is given- Drive the individual jaws of the jaw pairs 14,15 always one after the other when clamping, the first jaw moving against a fixed stop 17 and thus the axially correct one Pipe length is always guaranteed. Through appropriate cross-sectional design of the two pressure cylinders 16, this can be achieved with certainty. By exchanging tension rings you can alone DureJbmesserbereieii the machine! Machine sweeping drilling diameters.

The faceplate !! 9 ₅ 1o are, for example, if two different dishes are to be processed, so equipped that

two opposing knife holders 12 the larger Rohrdiameter © r and two more offset the smaller one by 90 ° Process pipe diameter. The setup time is therefore no longer necessary fully.

Claims (4)

SCIÜiDZANSPSUCEE: Ι.) VoT ^ direction to save ears, preferably to HoM ^ anden processing machines, characterized in that these several, pairs of opposing clamping jaws HS ^ imiJerscliiedlicneiii ELruumrungsradixis have. 2.) TorricirfcuEig according to claim 1, characterized in that the jaws (i * -, i5) i ^ a common housing (13) angeorönei; are. 3.) Device üaci "claim 1 and / or 2, characterized gekennzeiclmei; ,, that the individual jaws of a pair of jaws, 15) are consecutively together. 4.) Device according to claim Λ and / or one or more of the following, characterized; that the first actuatable clamping jaw is moved up to a stop (17) mounted in the housing (15).