RU223619U1 - Pipe bender working unit - Google Patents

Abstract

The utility model relates to the field of metal forming and can be used in devices for bending workpieces in the form of profile pipes, channels, rods, and strips. The working unit of the pipe bender is a shaft support (4) with bushings with bearings (3) attached to it. The bearings contain a support shaft (1) with easily removable washers (2) placed on it. The easily removable washer (2) is a flat plate with a semicircular cutout for seating on the support shaft (1). As a result, labor intensity is reduced when centering workpieces of different widths on the pipe bender shaft. 6 salary f-ly, 3 ill.

Description

TECHNICAL FIELD

The utility model refers to a part of a pipe bender, namely, it is a pre-assembled assembly of parts that is installed on it during assembly of the pipe bender. The device is a mechanical assembly containing a shaft, for example, a smooth rod or a threaded rod: a pin or bolt, which is placed in a support, while easily removable washers are installed on the shaft.

BACKGROUND OF THE ART

Patent RU No. 205187 U1, IPC B21D7/00, published on June 30, 2021, is known from the prior art, in which adjusting washers are put on the support rollers in the working unit of the pipe bender to center the workpiece on the rolls.

There is a known pipe bender RU No. 205738 U1, MPK B21D7/08, MPK B21D11/00, published on 08/04/2021, in which washers are put on the side support shafts in the working unit of the pipe bender with the possibility of centering and fixing the workpiece between them, while the washers rest against side shaft bearing and do not move.

A common drawback in the design of the working unit of known pipe benders is the washers placed on the support shafts, namely the laboriousness of putting them on and off the shafts to center blanks of profile pipes, channels, square rods, metal strips of different widths; for this you have to remove the side support shafts from the device support for putting on or removing limit washers.

The disadvantages of analogues are eliminated by the proposed technical solution.

DISCLOSURE OF THE ESSENCE OF THE UTILITY MODEL

The technical challenge is to create a simple and reliable working unit for a pipe bender, which will allow you to quickly center blanks of profile pipes, channels, square rods, metal strips of different widths on the support shaft.

The technical result that the claimed solution is aimed at achieving is a reduction in labor intensity when centering workpieces of different widths on the shafts of a pipe bender.

The technical result is achieved by the fact that the working unit of the pipe bender is a shaft support with bushings with bearings attached to it, in which a support shaft is installed with easily removable washers placed on it, while the easily removable washer is a flat plate with a cutout for fitting on the support shaft.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 - Working unit of a pipe bender, side view, top view and section.

Fig. 2 - Working unit of a pipe bender isometric.

Fig. 3 - Examples of the appearance of an easily removable washer.

In fig. 1-3 the following positions are indicated:

1 - support shaft;

2 - easily removable washer;

3 - bushing with bearing;

4 - shaft support.

IMPLEMENTATION OF THE UTILITY MODEL

All components of this utility model are described in detail below with reference to the drawings and the reference positions indicated on them for a more complete understanding of the scope and all technical aspects of the claimed technical solution by a person skilled in the art.

In fig. 1-3 shows the claimed working unit of a pipe bender.

The working unit of a pipe bender is an assembly unit that is installed on the frame of the pipe bender during its manufacture and represents a shaft support 4 with bushings with bearings 3 installed on it, which house the support shaft 1. Easily removable washers 2 are put on the support shaft 1 to center the profile workpiece pipes on shafts for further bending. The number of easily removable washers 2 placed on the support shafts 1 of the pipe bender depends on the width of the profile pipe and can be from two pieces on one shaft or more.

The shaft support 4 is a channel and can be made in the form of two plates or two plates connected to each other by jumpers. Bushings with bearings 3 are attached to the shaft support 4 by welding. A support shaft 1 is installed in bushings with bearings 3, which rotates freely.

The support shaft 1 has a cylindrical shape, can be smooth, have the form of a threaded rod or bolt, or be made with a collar in the center.

Easy-to-remove washer 2 for a pipe bender is a flat plate with a cutout for fitting on support shaft 1. The hole in the plate of easily-removable washer 2 is made commensurate with the diameter of support shaft 1 and allows easy-to-remove washer 2 to be freely put on support shaft 1. Easy-to-remove washer 2 has a horseshoe shape, also this shape can be described as U-shaped or U-shaped. The design of the easily removable washer 2 makes it easy to put the washer on and remove it from the support shaft 1. When the easily removable washer 2 is put on the support shaft 1, the easily removable washer 2 enters the shaft support 4 and when the support shafts are rotated during operation of the pipe bender, the easily removable washer 2 rests against the walls of the shaft support 4 and is securely held on the support shafts 1.

This design of easily removable washer 2 allows you to easily change the number of washers on the support shaft 1 and very quickly configure the working unit of the pipe bender to work with different widths of workpieces.

To make it even easier to put on and remove the easily removable washer 2 from the support shaft 1, a protrusion in the form of an inverted isosceles trapezoid with rounded edges can be made in the upper part of the easily removable washer 2, or two protrusions can be made at an angle from the vertical axis, or two horizontal protrusions can be made in the upper part of the washer, or the upper end of the easily removable washer is made flat. Examples of the appearance of the easily removable washer 2 are shown in Fig. 3.

Easily removable washer 2 can be made of metal, steel, cast iron, high-strength composite materials, rubber or ceramic.

When operating the working unit of the pipe bender, two or four round washers can be put on the support shafts 1 in accordance with GOST 1137-78 or DIN 125 washers. If two round washers are put on the support shafts 1, then they are located closer, for example, to the profile pipe, such thus protect the pipe from possible damage during bending, because they rotate on support shafts 1 while the profile pipe moves. If four round washers are put on the support shafts 1, then easily removable washers 2 are placed between them, adjusting the distance in the center to place the profile pipe for bending on the working unit of the pipe bender.

The device operates as follows.

Two or more easily removable washers 2 are put on the support shaft 1, placed in bushings with bearings 3, of the working unit of the pipe bender, depending on the width of the profile pipe. To do this, an easily removable washer 2 is put on the support shaft 1 from top to bottom, the easily removable washer 2 is securely located on the support shaft 1, held by its lower part in the support of the shaft 4. After this, the easily removable washers 2 are moved apart, freeing up space in the central part of the support shaft 1 for further placement of the profile pipe blank. When changing the width of the profile pipe, during the subsequent placement of the profile pipe on the support shaft 1, easily removable washers 2 are put on the support shaft 1 or removed from the support shaft 1 to adjust the working unit of the pipe bender to the size of the profile pipe.

Claims (7)

1. A working unit of a pipe bender, containing a shaft support with bushings with bearings attached to it, in which a support shaft is installed, characterized in that easily removable washers are placed on the support shaft, while the easily removable washer is a flat plate with a cutout for fitting on the support shaft. 2. The working unit of a pipe bender according to claim 1, characterized in that the plate of the easily removable washer is U-shaped. 3. The working unit of a pipe bender according to claim 1, characterized in that the plate of the easily removable washer is U-shaped. 4. The working unit of a pipe bender according to claim 1, characterized in that the plate of the easily removable washer in the upper part has a protrusion in the form of an inverted isosceles trapezoid. 5. The working unit of a pipe bender according to claim 1, characterized in that the plate of the easily removable washer in the upper part has two protrusions made at an angle from the vertical axis. 6. The working unit of a pipe bender according to claim 1, characterized in that there are two horizontal protrusions in the upper part of the plate of the easily removable washer. 7. The working unit of a pipe bender according to claim 1, characterized in that the upper end of the easily removable washer is flat.