SU1764740A1 - Pipe bender - Google Patents

Description

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(21) 4863920/27 (22) 09/03/90 (46) 09/30/92. Bul №36

(71) Kurgan branch of the Sverdlovsk Technological Research Institute

(72) V.S. Yuzhakov and V.F. Lebedev

(56) USSR Author's Certificate No. 1123762, cl. B 21 D 7/02, 1982. (54) MACHINE FOR BENDING PIPES

(57) Use: manufacture of the handlebars. Summary of the Invention; the pipe bending machine contains base-mounted bending mechanisms in the horizontal plane and in the vertical plane. The mechanism of bending in the horizontal plane consists of two templates installed rotatably on the axles, and of two bending rollers mounted on the axles between the plates. The plates are installed in pairs on the axis with the possibility of angular rotation on it along with the axles. The axis is installed in the U-shaped bracket mounted on a movable carriage. The bracket is equipped with a pusher. Two stops are installed on the basis of the machine. The mechanism of bending in the vertical plane consists of two templates and two bending rollers, which are made with oblique flats on their outer sides. The flats form a channel that ensures the entry of the ends of the workpiece into the streams of templates and rollers after bending the workpiece in the horizontal plane. Patterns are rigidly mounted on racks and connected to gears, and bending rollers are rigidly connected to gears. The bending roller together with the gear wheel is mounted on the axle, which is fixed in the carrier. The carrier, in turn, is rigidly connected to a gear wheel, which interacts with a gear wheel mounted on the drive shaft. 11 il.

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The invention relates to the processing of metals by pressure, in particular to means for bending pipes by cold plastic deformation.

The purpose of the invention is to reduce energy consumption and improve the quality of the finished product.

This is achieved by the fact that the pipe bending machine, which contains a horizontal bending mechanism installed on the base with bending templates and rollers mounted on the axles, means for moving one of the bending tools with stops and installed in the guides with the possibility of reciprocating along bending and periodic interaction axes with stops, carriage and drive of bending tools; bending mechanism in a vertical plane with bending tools mounted on axes The booms and rollers and their drive with the shaft are provided with an ejector placed on the means for moving the bending rollers, made in the form of an U-shaped bracket fixed to the above carriage, mounted in pairs on the latter by means of additional axes that can be rotated relative to the bending axis of the plates .

The pusher is located on one side of the U-shaped bracket, bending rollers are between the plates, and the templates are mounted on the base with

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rotate around its axis. The mechanism is flexible in a vertical plane made in the form of gears symmetrically connected to the drive shaft, the gears of which are mounted coaxially with the bending roller and the template rigidly mounted on the ends of the latter additional gear. Bending rollers are connected to gears by means of a carrier rigidly mounted on one of its gears. The template is rigidly installed on the base. On the outer surface of the bending tools are flats for a bent pipe.

1 shows a General view of the machine in the plan (at the end of the working cycle); figure 2 - section aa in figure 1; figure 3 is a cross-section bB in figure 1; Fig. 4 is a flexible pipe diagram, a loading station; nafig.5-too, the plan; figure 6 - diagram of flexible pipes in the horizontal plane; 7 - the same plan; on Fig - diagram of flexible pipes in a vertical plane; figure 9 is the same plan; in fig. 10- a scheme of flexible pipes, the position of removal of the finished part; in fig. 11 - the same plan.

The pipe bending machine contains the base 1 and the mechanisms installed on it: 2 - are flexible in the horizontal plane and 3 - are flexible in the vertical plane.

The bending mechanism in the 4 horizontal plane 2 consists of two templates 4 mounted rotatably on axles 5 and of two bending rollers 6 mounted on axes 7 between the plates 8. The plates 8 are mounted in pairs on axis 9 with the possibility of angular rotation on it together with axis 7, axis 9 is installed in a U-shaped bracket 10 mounted on a movable carriage 11, which has the ability to reciprocate between templates 4. The bracket 10 is equipped with an ejector 12. On base 1 of the machine two stops 13 are installed.

The mechanism is flexible in the vertical plane 3 consists of two templates 14 and two bending rollers 15. The templates 14 and the bending rollers 15 are made with oblique flats 16 located on the outer sides of the templates 14 and the rollers 15 on the same vertical and form a channel (see Fig.4 ), providing entry of the ends of the workpiece 17 into the streams of the templates 14 and rollers 15 after bending the workpiece 17 in the horizontal plane.

The templates 14 are rigidly mounted on the uprights 18 mounted on the base 1 and connected to the gear wheels 19, and the bending rollers 15 are rigidly connected to the gear wheels 20. The bending roller 15 together with the gear wheel 20 is installed

on the axis, which is fixed in the carrier 21. The carrier 21, in turn, is rigidly connected to the gear wheel 22, which interacts with the gear wheel 23, fixed

on the drive shaft 24,

The pipe bending machine is also equipped with a carriage 11 for moving the carriage 11 and limit switches:

26 — turning on the drive 25 of moving the movable carriage 11;

27 — limiting the working stroke of the movable carriage 11 and engaging the drive 24;

28 — limiting the operating rotation of the carrier 21 and activating the reverse of the drive 24;

5 29 — turn off drive 24 and turn on reverse of drive 25;

30 - turn off the drive 25.

The machine works as follows.

In the initial position, the movable carriage 11 with bending rollers 6 is in the extreme right position.

The workpiece 17, in the form of a pipe of a given length, is placed in the bending zone between the patterns 4 and the bending rollers 6 (Fig. 4 and

5 5). The workpiece 17 is supplied up to the stop in the end switch 26. The working stroke of the movable carriage 11 begins. When the working carriage 11 moves, the bending rollers 6 press the workpiece 17 to the templates 4. When

In this, the workpiece 17 enters the streams of the templates 4 and the bending rollers 6 and takes a U-shaped form (Fig. 6, 7). The free ends of the workpiece 17, thanks to the sloping flats 16, entered into the streams of patterns 14 and bending

5 rollers 15. At the end of the stroke of the carriage 11 presses the limit switch 27, which turns off the drive 25 and turns on the drive 24. The gears 23 mounted on the drive shaft 24 rotate the carrier 21

0 through the gears 22, rigidly bonded with the carrier 21.

Bending rollers 15 mounted on a shaft inside the contour of the carrier 21 roll around the templates 14 and bend the ends.

5 of the workpiece 17 in the vertical plane at the required angle (Fig.8,9). Bending angle adjustment is performed with the help of limit switch 28. During the return stroke after bending, the bending roller 15

0 rotates with the gear wheel 20 rigidly attached to it. And the gear wheel 20 interacts with the gear wheel 19, rigidly fastened to the template 14. As a result, the bevel 16 is inclined

5 roller 15 always sets in the original position.

After bending the workpiece 17 to the required angle in the vertical plane, the limit switch 28 switches the actuator 24 to reverse. At the same time drove 21 along with

the bending rollers 15 are returned to the initial position, while pressing the limit switch 29, which turns off the actuator 24 and turns on the actuator 25. The movable carriage 11 moves to the initial position. When the carriage 11 is moved, the stops 13 press on the plates 8 and rotate them at an angle, as a result of which the bending rollers 6 approach each other, freeing the finished part 17 from the streams. Upon further movement of the carriage 11, the ejector 12 pushes the finished part 17 out of the streams of patterns 4. Thus, the finished part 17 is released from the clamped patterns 4 and bending rollers 6. At the end of the stroke, the carriage 11 presses the limit switch 30, which turns off the drive 25.

For the subsequent removal of the part 17, pressing the Back button on the machine control panel (not shown) shifts the bending roller 15 to the left (Fig. 10.11), with the result that part of the part 17 released from the template 4 and the bending roller 6 is lifted and freely removed from machine tool. After removing the part 17 by pressing the Forward button on the machine control panel (not shown), the bending rollers 15 return to their original position.

In order that after these additional displacements of the tilting foot 16 of the bending roller 15 are always set to the working position, the amount of the additional displacement Back - Forward is set up by the engine running time relay (not shown).

After removal of the finished product, the machine is ready for work.

The use of one flexible carriage in the horizontal plane of the machine for moving two bending rollers, and in the vertical bending mechanism of gears, reduced the number of drives compared to the prototype and thereby reduced power consumption of the machine.

Due to the fact that the rolling of the bending rollers of the mechanism are flexible in the vertical plane along the bent workpiece

1764740

occurs without slippage, ensuring the quality surface of the finished product.

Claims (1)

Invention Formula A pipe bending machine containing a horizontal bending mechanism installed on the base with bending templates mounted on the axes and rollers, means for moving one of the bending tools with stops and installed in guides with the possibility of reciprocating movement along the bending axis and periodic interaction with the carriage and drive stops of the bending tools, the mechanism is flexible in the vertical plane with bending templates and rollers mounted on the axles and rollers and their movement with the shaft, characterized in that, in order to reduce energy intensity and improve the quality of the finished product, it is equipped with a pusher, placed on the vehicle bending rollers made in the form of a U-shaped bracket fixed on the above carriage, mounted in pairs on the latter by means of additional axes can be rotated relative to the bending axis of the plates, the ejector being located on one of the sides of the U-shaped bracket, bending rollers - between the plates, and the templates are mounted on the base with the possibility of rotation around their axes, the mechanism is flexible in a vertical plane made in the form of symmetrically connected to the drive shaft of gears, gear wheels are mounted coaxially with a bending roller and a template rigidly fixed on the ends of the latter of an additional gearing, the bending rollers being connected to the gears by means of a rigidly mounted on One of its gear wheels drove, the template is rigidly mounted on the base, and flats for a bendable pipe are located on the outer surface of the bending tools. 1764740 Aa 2Z / 7 15 I "X j § with: ten i IQ "V, with S FIG. 9 FIG. // FIG. /ABOUT EZ