SU1465149A1 - Pipe-bending machine - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to machines for bending pipes with zone induction heating. Purpose . invention - improving the quality of products and ensuring the possibility of spatial bending. The machine contains a slider mounted on the carriage of the guide rollers with a double hinge for the carrier, which is rotatable in two planes. The carrier is made, telescopic and has grips on the moving part. Each gripper is formed in a stepped shape with an anvil plane for interacting with the end of the pipe and a surface for interacting with the internal wall of the pipe. The grippers are alternately fastened at the ends of the pipe and provide bends for different radii in the feed plane. 3 w. SB

Description

The invention relates to the treatment of metals by pressure, in particular, to machines for bending pipes with zone induction heating.

The aim of the invention is to improve the quality of products and ensure the possibility of spatial bending.

FIG. 1 shows a pipe bending machine in the initial position for performing the first bending; in fig. 2 - machine in the position of the second bend; in fig. 3 - copier and carrier.

The tube bending machine contains a bed 1, along the guides of which the longitudinal feed carriage 2 moves with support rollers 3 and a folding end stop 4. The end stop is mounted on the carriage in the required position and fixed with the help of combs 5. On the bed there is a carriage 6 of guide rollers 7 and 8. Rollers 7 are resting

on the inner side of the bend of the pipe. The rollers 8, located on the outer side of the bend of the pipe, are installed in a fixed position on the frame.

A slider 9 is mounted on the carriage 6 in the guides, which with the help of a screw 10 moves along the carriage to set the required bend radius of the pipe. A freely swiveling carrier 11 is fastened on the slider with two hinges 12, which ensure the carrier's rotation in the plane of the feed and perpendicular to the feed plane.

WATER 1-SHO is made telescopic, its movable part 13 is provided with grippers 14, the number of which is equal to the number of bends of pipe 15 and can be moved in the axial direction with the help of screw 16.

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Each gripper is staggered with a stop plane 17 for engagement with the end of the tube 15 and with a surface T8 for engagement with the inner surface of the tube.

The driver is supported by a copier 19 by means of a support roller 20. A covering ring inductor 21 powered by a TV 4 generator is installed on the frame,

To maintain optimal gaps between the bend pipe and the inductor, the latter has the ability to move in a vertical plane. In front of the inductor, there is a height adjustable table 22 with rollers 23 designed to support the pipe being bent when it is withdrawn from the side tower. At the rear end of the machine is installed supporting height-adjustable roller 24.

The machine works as follows.

The bendable pipe is fed by the support rollers 3 of the longitudinal feed carriage 2 and the rollers 23 of the table 22 and is set by the guide rollers 7 and 8 and through the annular inductor 21 advances to one of the grips 14 on the movable part 13 of the carrier 11, which is led to the end portion pipes.

The longitudinal feed carriage 2 with the end stop 4 is set to a predetermined position corresponding to the given pipe bend, and after the gaps between the pipe and the stop 4 and the gripper 14 are selected at a high speed on the longitudinal feed carriage 2 and the movable part 13 of the carrier 11 and at the same time, between the pipe and the guide rollers 7 and 8, the heating and the working feed for the pipe bending are turned on.

After the bending has been performed, the load is turned off, the moving part 13 of the carrier moves along the axis of the carrier 11, the extension of the carrier until the pipe is released from engagement with the gripper 14, and the carrier 11 is retracted, freeing the passage for the pipe to feed it to the next gripper 14 for subsequent pipe bending. .

Movement part 13 drove 11 is put in its place.

When changing the bend radius of the pipe, the slider 9 should be moved to another specified position.

When changing the shape of the copier 19 in the process of bending and after completion. flexible, when the pipe is removed from the inductor 21, it rests on the rollers 23 of the table 22.

When the working stroke of the rollers 7 are pressed, with an accelerated course and install the pipe is pressed.

Claims (1)

1. A pipe bending machine for the manufacture of products, preferably with more than one curved section, comprising a frame with a longitudinal feed carriage mounted on it, a guide roller carriage and an inductor, as well as a carrier with a hook pivotally connected with. half-wound radius adjustment unit flexible, installed in guides, characterized in that, in order to improve the quality of products by reducing the shape distortion of the cross section, it is equipped with additional piece grippers, the number of which, together with the available ones, is made corresponding to the number of bend sections of the product, was driven from the inside and rolling in the axle in the direction of the outer part, the grippers are placed along the forming part of the carrier part and are stepped in shape with an anvil plane to interact with the end face pipe and surface to interact with the inner surface of the pipe edge. 2, The machine according to claim 1, characterized in that numerical plate, in order to ensure the possibility of spatial bending, it is equipped with a copier mounted on the frame, interacting with the carrier, and the carrier installed with the possibility of rotation in the plane, perpendicular to the feed plane. FIG. 2 (fjus.i 18 /// /// fig.Z