DE1191780B - Screw suture pipework - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

B 21 c

German KL: 7b-9/01

Number: 1191780

File number: V183521 b / 7 b

Filing date: March 26, 1960

Opening day: April 29, 1965

One manufactures tube, among other things, in such a way that one has metallic bands to a screw with butting edges rolled up and then welded together. To do this, use other devices with a horizontal axis z. B. be given by an inner bending mandrel can, by means of adjustable guides and counter guides to the desired diameter, for example two outer bending rollers that interact with the mandrel and are adjustable with respect to it, causes the tape to roll up after it leaves a feeder. Latter is on an arm which can be pivoted horizontally about the aforementioned shaping device stored and guides the tape into the forming device under a depending on the pipe diameter and the width of the belt a variable inclination or winding pitch. By means of suitable Control devices shape the shaping guide screw suture pipework

Applicant:

Societe Anonyme VALLOUREC, Paris

Representative:

Dipl.-Ing. A. Maxton, patent attorney,

Cologne-Marienburg, Pferdmengesstr. 50

Claimed priority:

France of March 27, 1959 (790 555)

that the pipe builds up hanging on the incoming tape. Tubes with varying diameters genes and counter guides to the belt, the selected ao therefore have very different discharge heights. A

Incline or roll-up pitch and at the same time roll it up to the desired diameter. There are known pipe mills in which the tape running towards the bending work is independent of the continuation The disadvantage is the fact that the incoming strip does not enter the pipe tangentially, but because of the fixed inner mandrel, depending on the pipe diameter during its inflow

knife of the pipe to be produced experiences without harmful counterbending opposite to the pipe shape, bends always run in the same plane, ie which is detrimental to the shape accuracy of the pipe.
opens tangentially into the pipe forming upwards. In such pipe mills it is advantageous

that the draining pipe is always the same. The invention is intended to achieve that even with pipe mills of the last-mentioned type with a fixed inner mandrel, the tape is flat and the pipe

Has high altitude, it may now feed a large or small 30 tangentially at a constant altitude

Have diameter. In the prior art, the pipe circumference is controlled by radially adjustable rollers bounded like a cage, with an inner bending roller cooperating with the first two outer rollers, which is radially adjustable so that the band, depending on the pipe diameter, has a small or large curvature receives. The adjustability of the inner bending roller or the inner mandrel is structurally very difficult accomplish. The arrangement necessary for this leaves, with further emphasis being placed on the fact that the pipe - as in the first-mentioned prior art - builds up on the tape so that its discharge amount remains the same.

The invention is based on the first-mentioned screw seam pipe mill with a bending roller mill, that of a solid central mandrel and two cooperating with and opposite to this adjustable forme cylinders, which are in slide

interferes with access to the inside of the pipe when laying the 40 are stored and differ for the production

Inseam.

Another prior art pipe mill has a bending work with a fixed inner roller or fixed Inner mandrel and inclined rollers arranged thereon, which cooperates with two outer rollers, which in turn are each stored in a slide. Both carriages are mounted and adjustable on one level can by means of a spindle according to the intended pipe diameter in more or less Licher pipe diameter can be moved on a plane, for example by means of a spindle. The invention is that this plane of the carriage is part of a pivotable about the center of the mandrel Cradle is.

In the event that the carriage carrying the forme cylinder can be adjusted jointly by means of a spindle drive are, it is proposed according to the invention that the carriage by means of adjusting nuts also independently

a large distance from the inner mandrel are arranged so that they can be moved from one another. You are in a the. In these pipe mills, the fixed arrangement is the position that compensates for the mandrel deflection Inner mandrel advantageous; however, it is disadvantageous that it can be brought about.

509 567/108

Claims (2)

3 4 The invention is described below on the basis of the control and operation of the device The exemplary embodiment shown in the drawings will be better based on the schematic described. It shows F i g. Understand 1 and 4. F i g. 1, partly in elevation, a schematic view. 1 can be seen in a horizontal a device according to the invention, 5 valley level arranged feeding device for the F i g. 2 and 3 two schematic representations of the tape that is fed from the pinch rollers 10 over the smoothing a machine according to the invention when forming ter 9 is unwound and taken along and that Tubes with different diameters, is guided by the holding parts 12. From this fi F i g. 4 schematically shows the shape of a belt gur and from FIGS. 2 and 3 can also be with a device according to the generic io see that it is possible to determine the plane in which the tape term mentioned state of the art. is introduced into the molding device, with the feed A feed arm 3 has to collapse at its free end and guide plane onto this a reel frame 6, which takes the collar on-way any deformation or twisting of the spell, the overhanging arranged in a channel 8 to prevent the from rolling up. You use that is concentric to the pivot axis 2 of the arm 3 * 5 control member 29 and possibly the control member 30 to is attached in the area 1. After leaving the position of the cylinders 16 and 17 relative to the the reel passes the tape into a straightener 9, in mandrel 18, 19 according to the outer diameter of the to by a motor 11 controlled pinch rollers 10, then the forming pipe (cf. the holding parts 12 for the different pipe below, from which it belongs to the form diameters Figs. 2 and 3); transmission device 5 arrives. 20 then one can of the cradle 20 under the action of the The shaping device 5 comprises a Ge screw spindles 22 housing the necessary inclination, whose longitudinal surface facing the belt lend so that the cylinder 16 touches the feed plane 13 and its two side walls 14 and 15. The belt introduced in this way without changing the recesses for the pivoting movement of the arm 3 plane is only slightly curved and for the entry of the belt and the * 5 between the cylinder 16 and the mandrel 18,19; the exit of the finished pipe. The actual form rollers 19 are according to the construction of the plane transmission organs consist of two cylinders 16 and the feed track exactly adjacent; the curling is 17, which are arranged on both sides of the dome 18, which, consequently, essentially by the combination of the like FIG. 2 shows, wheels 19 and the cylinder 17 arranged side by side are ensured.
19 has, in a known manner, the same inclined 30 For comparison, Fig. 4 shows the passage position as it has the tape to the mandrel axis. of a band by a shaping device The mandrel 18 is at one of its ends and in a known manner, which has two forme cylinders, part of its length on the surface 13 of the opposite the mandrel only in the horizontal direction of the housing 15, which is cut out that they can be pushed in, without the possibility of the tape running. At the other end 35 closing pivot. The band enters at an angle to the mandrel remains free, while all other emergency axes of the first forming cylinder are provided in a nimble recess around the inclined plane that is tangent to the lower part of the cylinder curling and then the removal of the pipe from the. It results from allowing the tape to thorn. In the case of the in FIG. 2 shown between the clamping rollers and the first cylinder device, the forme cylinders 16 and 17 are curved to 40, as shown in FIG. the lower part of which is circular and the front edge has a more or less arcuate cross-section. This cradle is curved in accordance with the more or less concentric guide bed around the large roll-in diameter. axis of the wheels 19 of the dome pivotable by means of 45 It will be noted that in the device a screw jack 22 which is connected to a rod according to FIG. 4 the belt above the cathedral and under the coupling which passes through the outer arms 23 of the cradle half of the forming cylinder. After connects. preferred embodiment of the here described The upper part of the cradle 20 has supports, the invention is chosen (initially as per se carry a spindle 24 with two opposing 5 <> known designated) opposite device, External threads are provided with corresponding in the the tape below the dome and above Internal threads of two carriages 25 and 26 in the forming cylinder passes through. This last one handle, which are guided in the upper part of the cradle arrangement is favorable for the rotary movement of the and the supports 27 and 28 of the forme cylinders 16 and the cradle of the forme cylinders opposite the dome. 17 wear. 55 In addition, the tube is shaped from below One control by wheels and screw-up; its inlet opening is thus outwards spindles 29 allows the spindle 24 to rotate and wide open and not misplaced by the dome, the accordingly, the simultaneous approach or disentanglement only partially in the lower part of the pipe femung the forme cylinder 16 and 17 on the one hand and penetrates. of the cathedral 18 on the other hand. Furthermore, 60 claim 2 is a real subclaim.
the adjusting nuts 30, which are in the support brackets 25 of the claims:
Cylinder 16 are mounted, the separate approach or removal of this cylinder compared to the 1st screw suturing pipe mill with a bending mandrel 18. By combining the action of the rolling mill, which consists of a fixed central dome control elements 29 and 30, you can achieve the 65 and two With this cooperating shape axes of the cylinders 16 and 17 converge slightly, there are cylinders which are mounted in slides to allow a bend in the dome to be corrected if necessary and to produce different tube diameters, for example by means of a spindle can move a plane, characterized in that this plane of the carriage (25, 26) is part of a cradle (20) pivotable about the center of the dome (19). 2. Device according to claim 1, in which the forme cylinder carrying carriage jointly by means Spindle drives are adjustable, characterized in that the carriages (25, 26) by means of Adjusting nuts (30) can also be moved independently of one another. Considered publications: German Patent No. 280 992; Belgian patents nos. 565574, 571 608; British Patent Nos. 520 772, 308419; U.S. Patent Nos. 2,837,626, 2,752,873, 2,729,180, 2,365,953, 2282176, 1659,792, 659 754. Older patents considered: German patents No. 1,075,530, 1,073,993. 1 sheet of drawings 509 567/108 4.65 © Bundesdruckerei Berlin