DE1000326B - Plant for the production of pipes of large dimensions - Google Patents

Description

The invention relates to a plant for the production of large pipes, which consist of a pipe store, a furnace, a draw bench and a grid for the drawn pipes. The draw benches of such systems usually have a front bed that can be moved transversely by a small amount and that can be loaded in one position is and is in the other in working position, d. H. in the axial direction of the drawbench.

The invention consists in that, on the one hand, the transverse mobility of the preliminary bed is increased in this way that this is the whole length of the plant, i. H. coat the pipe store, the oven, the bench and the grate can, on the other hand by means of a device arranged on it for retraction and extension the pipes take the long and heavy workpieces from the place where the crane will drop them, d. H. the pipe store, Pick it up, put it in the oven, bring it to the draw bench and place it on the grate after the last pull can so the! Involvement of manual labor or other equipment for intermediate transport is not required.

On the one hand, it has already been proposed, e.g. B. the tilting table of a sheet metal rolling mill Cross conveyor similar to the subject of the application with a transport device arranged thereon upstream to bring the rolling stock from the furnace into the rolling mill. ;; on the other hand it is known that End of a rolling stock.'with the axially displaceable, Loveable and lowerable as well as inclinable arranged on a slide that can be moved transversely to the rolling direction To grasp the clamping device, to move it transversely and to make a tap in a rolling stand.

The teaching of the invention is now the advantages such a cross conveyor can also be done in a simple manner can be used for the above mentioned equipment to make by "da ^ with the known drawing machine Any pre-bed that is already present undergoes such a transformation that it does the function of that cross conveyor with can take over.

With this solution it becomes possible without a special one Effort to transport the pipes from the same place where they are from the crane put away, take it away and slide it into the drawer. After pulling them, after the Drawing die has been swung up or to the side, by the same device or by one The driven roller table lying in the pull bed is brought back and attached to one by the movable pre-bed free place from which the crane can take them away again.

In the case of hot drawing benches, the tubes are inserted into the furnace through the same pre-bed prior to drawing and after heating it is pulled out and pushed into the draw bench. For larger quantities

Plant for the production of pipes
large dimensions

Applicant: Mannesmann-Meer

Corporation,

M. Gladbach

Paul Schmitt, Thalexweiler,
has been named as the inventor

it may be necessary to use a

ao to have the second device carried out. This arrangement simplifies the operation and the draw bench performance increases.

The invention is shown schematically in FIGS shown. It shows

Fig. Ι a plan view of the drawing attachment with the transversely movable preliminary bed according to the invention,

Fig. 2 shows a section through the transversely movable pre-bed 1 with the protection 20 against too rapid cooling of the drawn goods,

Fig. 3 is a diagram of the retraction and extension device with the chain 5, the tension 8, the carriage 10, the clamping cylinder 11, the drawing die 12 and the Support role 13.

The transversely movable front bed consists of the frame 1, which is fixed in height and in the longitudinal axis and the drive 2. In this frame 1 is the height adjustable and in the transverse and longitudinal axes Fixed frame 3 with the support rollers 4, 'the chain 5 and the chain guides 6. Simultaneously the guide rails 7 for guiding the movable collet 8 are thus connected. These Collet 8 consists of the unequal length of the jaw 9 and the one connected to the chain 5 Car 10. The tension is caused by a lifting unit τ τ fixed on the carriage 10.

About the shots produced when pulling the mast to be able to support with unequal diameter in the vicinity of the drawing die 12 in the axis, lies in the Frame 3 an adjustable roller 13, which by a sensor control 14 the pipe axis in the horizontal Location holds. The whole system from 3 to 14, with the exception of the drawing die 12, i. H. Frame 3, support rollers 4, chain S, chain guides 6, guide

Rails 7 for guiding the movable collet 8, collet legs 9, trolley, 10, on your trolley fixed lifting unit 11, roller 13 and! Sensor control 14, can be adjusted together by cylinder 15 or spindle.

The operation of the draw bench according to the invention is as follows: from an overhead crane to the Pipe storage 16 laid pipes are packed from the storage point by the collet 8 and through the dde Chain 5 pulled onto the bed and at the free point in the. Oven 17 pushed. After heating the withdrawal and the introduction into the die 12 in the drawbench axis takes place, as just described. The returns necessary for multiple pulling can either be done in the same way or above the roller table 18 arranged in the drawing bed 21 below. The vertical arrangement the collet 8 results from the need to always keep the pipe at its rear end, d. H. in the case of a mast tube at the point of its largest ao Diameter, in each case at the lowest point of the pipe circumference to pack.

The necessary when pulling a mast due to the different diameters of the individual shots The height of the front support roller 13 is preferably changed via a pressurized oil-operated one Cylinder 15 or spindle drive. To facilitate the Operation and with the aim of smooth, speedy work is the control of the roller 13 by a feeler roller 14, which eängeschwenkt only when necessary is carried out.

After drawing, the drawing die 12 is pivoted upwards or to the side. The pipe is then returned to the transversely movable pre-bed, then the pre-bed is moved to the left in Fig. 1 and placed on the grate 19. After the pulling, the layers of the outer end edges of all pipe ends on the laying grate 19 have the same height as a result of the same height from the laying grate and stove hearth.

Normally, with a certain diameter range of the pipes to be drawn, one comes with the above-mentioned lifting device in the form of a cylinder 15. In the event that this diameter range is exceeded in exceptional cases, a second lifting device 22 is provided to the Adjust the collet 8 to the desired height.

In order to delay the cooling when pulling several times, so that more pulls are heated in the same way To make it possible, the lengthways of the preliminary bed are closed by sheet metal 20.

Claims (10)

PATENT CLAIMS: 1. Plant for the production of pipes of large dimensions, which consists of a pipe store, a Oven, a draw bench and a grate for the drawn pipes and their pipe draw bench is equipped with a transversely movable front bed arranged on a trolley, thereby characterized in that the transverse mobility of the pre-bed over the entire extent of the Drawing machine, d, h. the pipe store (i6), the furnace (17), the pull device (12, 18, 21) and the grate (19), and that on the front bed a device (5, 8, * 0, lo) for drawing in and Extending the pipes is provided. 2. Device according to claim 1, characterized in that that the device for retracting and extending the tubes is known per se driven chain (5) with tong carriage (10) and tongs (8, 9). 3. Device according to claims 1 and 2, characterized in that the chain (5) with in a collet (8), which is preferably arranged at a vertical plane. 4. Device according to claims 1 to 3, characterized in that the tongs (8) preferably can be tensioned by a lifting unit (11). 5. Device according to claims 1 to 4, characterized in that a height-adjustable roller (13) for the drawn material is arranged on the preliminary bed, specifically in the vicinity of the die (12). 6. Device according to claims 1 to 5, characterized in that the height adjustment the roller (13) is carried out by a sensor control (14) which scans the position of the drawn material. 7. Device according to claims 1 to 6, characterized in that the sensor control (14) can be swiveled in. 8. Device according to claim 2, characterized in that the chain (5) in its height position is adjustable. 9. Device according to claim 8, characterized in that the height adjustment takes place mechanically, hydraulically or pneumatically. 10. Device according to claims 1 to 9, characterized in that the pre-bed is closed on the longitudinal sides by cover plates (20). Considered publications:
U.S. Patent Nos. 2,560,058, 2,519,837;
French patent specification No. 683 706. 1 sheet of drawings «09 740/113 12.56