SU573224A1 - Pipe bender - Google Patents

Description

one

The invention relates to pipe bending production, in particular to equipment for performing pipe bending works, and can be used for bending pipes in a cold state, 5

A known pipe bending machine comprising a shaft mounted, movable bending template, roll-in roller, movable carriage and pipe clamping mechanism 1 j.

A disadvantage of the known machine is the IQ rapid wear of the pipe bending tooling.

It is also known a pipe bending device, a base mounted on a shaft, a bending template, a rolling roller, a burner device and a movable carriage 2 .g

However, the increased wear of the bending tool leads to an increase in the ovality of the cross sections and a smooth corrugation.

In order to improve the quality of the bent products, 20 ovaliyatsii marks and reduction of wear of the pipe bending tooling on the carriage are mounted with clips, grooves are installed; self-centering gauge rollers, while the axes of the gauge rollers are parallel- gs

between each other and perpendicular to the axis of the shaft of the flexible template.

Fig, 1 shows the proposed pipe fitting device, side view; on the fsh-, 2 is depicted the same. in FIG. 3 a section along the A.-A on the fng. 2,

The tubing device comprises an Is bending template which is mounted on shaft 2; clamping device 3; Nickel guided 4, connected with sleeve 5; hinged upper direction 6 with sleeve 7; vt1ovoy pryu-him 8; a carriage 9 is pushed up, which can be swapped along the guides with the help of the VST mechanism 1O; the handle 11, with the help of which a bending R f {n locking screw 12. is created. Circumference of the Bent pipe. The brook of the bending template 1 encloses an o1 / 5-1 / 6 around the bend of the pipe being bent, in this case: a manual bending device is detected, but it can be mechanized and automated by known methods. The operation of the pipe bending device is shown in the manual version. The pipe 16 is inserted into the clamping device geo 3 between PCs 13, 14 and the bending template 1, where it is fixed after the corresponding centering. The carriage 9 is centered in the horizontal direction with the aid of the screw mechanism 1O, in the vertical direction with the screw 12 and the screw clamp B, After centering, with the screw 8, the calibrating rollers 14 are pressed to the side surfaces of the pipe. A force Q is created that acts through the force of flattening. The magnitude of the force Q is selected by an exponential method or calculated theoretically. Then, with the aid of the handle 11, a force P is created, which bends the pipe at a given angle (It is possible that the carriage 9 remains in place and the template 1 with the attached device 3 rotates, winding on the template). After bending with the help of a screw clamp 8, the force Q from the side faces of the pipe is removed, the paaxoftiaer from the pressing device 3, and the pipe is bent out of the pipe bending device. Horizontal and vertical reentranting is performed only when changing to a different radius of bending. Or another THnopa3Nrepy of pipes, and the corresponding bending disk or bending and folding rollers replace it.

The proposed tube clamping device significantly expands the technological capabilities of bedorn Bending of topcosthenes1, 1X tubes (i.e., without the use of mandrels): pipe bending can be performed up to Zadius equal to two, three pipe diameters, with

When bending pipes made of doped materials going to the chemical system, these pipes are currently bent using low-melting fillers.

Claims (2)

1. Copyright USSR Union № 376148, cl. B 21 B 7/04, 1971. 2. US patent No. 3. 448.602, cl. 72-217, 1965. In this respect, the quality of the weighted plots corresponds to the current technical requirements of various branches of engineering. The wear of the bending equipment (templates and gage rollers) is drastically reduced, because the resultant flattening forces, which unbend the pipe under bending, are directed to the central part of the gage rollers and are balanced by Q forces. It does not produce high-quality bending of thin-walled pipes for radii equal to 2-3 outer diameter without the use of mandrels. The proposed device is especially effective.