RU214813U1 - pipe bender - Google Patents

Abstract

The utility model relates to the field of metal forming, in particular to roll-type manual roll-forming equipment, used in various industries, housing and communal services or in everyday life. The pipe bender consists of a frame (1), a movable part of the frame (2), sprockets (3), which are fixed on the support rolls (4) and the pressure roll (5). Washers (17) can be put on the backup roll (4) and pressure roll (5). The bearings (6) are located in the bushes under the bearing (7) and allow the rolls to rotate freely. Lugs (9) are welded to the jumper (8) in the lower part of the frame (1), into which a bushing (10) is inserted, to which the pin (11) is attached. The stud (11) goes through the support piece (12) and the nut (13) which is welded to the support piece (12). The handle (14) rotates the pin (11). The handle (15) drives the sprocket (3) which transmits the torque further. Using the holes (16) in the base (1) the pipe bender can be fixed to the work surface. 5 ill.

Description

FIELD OF TECHNOLOGY

The utility model relates to the field of metal forming, in particular to manual roll-forming equipment, used in various industries, housing and communal services or in everyday life. The device can be used for the manufacture of curved pipes, profiles, metal strips with a certain bending radius. The utility model can be used for the manufacture of greenhouses, greenhouses, sheds for houses, gazebos, swings, barbecues, decorative fences and gates.

BACKGROUND OF THE INVENTION

A hydraulic machine for the manufacture of curved tubular products is known from the prior art (patent RU No. 98953U1, IPC B21D9/05, published on 11/10/2010), which is a hydraulic cylinder connected to a hydraulic pump mounted on a frame with a rod carrying a removable bending template at its end, and two replaceable thrust swivel rollers fixed with axes on the frame perpendicular to the plane to the plane of movement of the bending template.

The disadvantage of this utility model is the need to connect the machine to electricity and plumbing.

A device for bending metal rods is known (patent RU No. 80368U1, IPC B21D7/02, published on February 10, 2009), including a plate with a body fixed on it, two stops, one of which is placed on the plate, and the second on the working surface of the body, a clamping nut located in the same place on the same axis with the stop, a lever with a roller is installed on the side walls of the housing through the axis, and a vertical groove is made in the front surface of the housing to form a bending radius.

The disadvantages of this device is the design that allows you to get products with only a small bending radius, since the maximum size of the bending radius is limited by the size of the groove used to form this radius, in addition, the device involves the use of preheating the workpiece.

As the closest analogue, a pipe bender was taken (patent RU No. 205567U1, IPC B21D7/08, published on 07/21/2021), containing back-up rolls, a frame with roll supports having bearings in which back-up rolls with sprockets attached to them are installed with the possibility of rotation, connected to each other by a drive chain, and a clamping screw located in the frame with the possibility of movement and made with a support in which the pressure roll is installed in the bearings, holes are made in the frame for fixing the mentioned roller supports, and the roller supports are fixed in these holes with the help of bolts and nuts.

The disadvantage of analogue is the frequent slippage of the workpiece and reduced productivity of the process. This is due to the fact that only two of the three rolls are leading and transmit the moment to the workpiece.

The disadvantages of the prototype eliminates the proposed technical solution.

DISCLOSURE OF THE ESSENCE OF THE UTILITY MODEL

The technical task is to create a reliable, easy-to-use device for bending metal pipes, profiles and bars, the design of which can reduce the complexity of the process and increase productivity.

The technical result, to which the claimed solution is directed, is the creation of a new design of a device for bending metal pipes, profiles and rods, which makes it possible to reduce the complexity of the bending process and increase productivity.

The technical result is achieved by the fact that the pipe bender contains a frame, backup rolls with sprockets attached to them, a pressure roll, characterized in that an asterisk is also attached to the pressure roll and rotation from the backup roll to which the handle is attached is transmitted using sprockets to the second backup roll and further to the pressure roll, thus three rolls are leading. This technical solution prevents the workpiece from slipping during bending, increases the speed of manufacturing the bent part, reduces the labor intensity of the process, and thus increases productivity.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 - pipe bender front view.

Fig. 2 - pipe bender side view.

Fig. 3 - section A-A.

Fig. 4 - shows the movement of the movable part of the bed, depending on the movement of the pin.

Fig. 5 - shows the movement of the workpiece between the rolls.

In FIG. 1-5 the following positions are indicated:

1 - bed;

2 - the movable part of the frame;

3 - asterisk;

4 - back-up roll;

5 - pressure roll;

6 - bearing;

7 - sleeve for the bearing;

8 - jumper;

9 - ears;

10 - bushing;

11 - hairpin;

12 - supporting part;

13 - nut;

14 - handle;

15 - handle;

16 - holes;

17 - washers.

IMPLEMENTATION OF UTILITY MODEL

The following describes in detail all the components of this utility model 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. 1-5 shows the claimed pipe bender.

The pipe bender consists of a frame 1, which is a fixed part containing a base, to which two side walls are welded, located perpendicular to the base, parallel to each other and the movable part of the frame 2, which is connected to the fixed part through bushings for bearings 7 of the upper support roll 4, and spin freely on them. The movable part of the frame 2 consists of two curved plates, which in the lower part are connected to each other by means of the support part 12, and in the upper part they are attached to the fixed part of the frame 1 with the help of bushings for bearings 7 of the upper support roll 4. In the side walls of the fixed part in the movable part of the frame 1 and in the movable part of the frame 2 holes are made in which the bushings for the bearings 7 are located and the bearings 6 themselves are pressed into them. The pressure roller 5 is located on bearings 6, and the rollers rotate freely around their axis. Washers 17 can be put on the support roll 4 and the pressure roll 5, which serve to center the workpiece on the rolls, which makes it possible to obtain a more even and high-quality product. Washers 17 are collected on the support roll 4 and the pressure roll 5 in the same quantity, and this number depends on the width of the workpiece, so that the workpiece is freely located on the rolls between the washers 17, but does not hang between them. Sprockets 3 are attached to the support rolls 4 and the pressure roll 5, which are sequentially linked to each other. A handle 15 is attached to the lower support roll 4, with the help of which the support roll 4 rotates and the torque is transmitted to the second support roll 4 and to the pressure roll 5.

In the lower part of the frame 1 there is a jumper 8, to which the ears 9 are welded. Round holes are made in the ears 9 and the sleeve 10 is inserted into these holes in such a way that it rotates freely around its axis and does not pop out of the ears 9. It is attached to the sleeve 10 in the middle stud 11, which passes through a hole in the central part of the support part 12, to which the nut 13 is welded. A handle 14 is put on the free end of the stud 11, which facilitates the rotation of the stud 11. When the stud 11 rotates around its axis, the moving part of the frame 2 is raised or lowered and accordingly the pressure roller 5 is also raised or lowered. This allows you to adjust the bending radius of the workpiece. Using the holes 16 in the frame 1, the pipe bender can be fixed to the work surface.

The operation of the device is as follows.

To ensure the safety of the work process and create a stable structure, the pipe bender is fixed with a fastener through the holes 16 in the frame 1 on the working surface. Before starting work, the movable part of the bed 2 is in the lower position, so that the workpiece for bending is freely placed between the lower support roll 4 with pressure roll 5 and the upper support roll 4. If the width of the workpiece selected for bending is less than the width of the support rolls 4 and pressure roll 5, it is advisable to put washers 17 on the rolls before starting work to prevent the workpiece from skewing during bending. Next, the workpiece is placed on the lower support roll 4 and the pressure roll 5 between the washers 17 and they begin to rotate the pin 11 using the handle 14, the movable part of the frame 1 rises and presses the workpiece against the upper support roll 4. After that, rotate the handle 15, the support rolls 4 and pressure roller 5 with the help of sprockets 3 begin to rotate and advance the workpiece, thus, after the first rolling, the workpiece acquires a small radius. Next, the pin 11 is twisted a little more, the movable part of the frame 1 and, accordingly, the pressure roll 5 rise higher and the pressure roll 5 presses on the workpiece more strongly, the support roll 4 is set in motion with the help of the handle 15 and the workpiece is rolled again. To obtain the required radius of the workpiece, twist the pin 11 as many times as necessary to achieve the desired result. After obtaining the desired radius of the workpiece, the pin 11 is turned counterclockwise, the movable part of the frame 2 is lowered and releases the curved workpiece.

The presence of bearings 6 allows the support rolls 4 and the pressure roll to rotate freely. The presence of an asterisk 3 on the pressure roll 5 sets the pressure roll 5 in motion and thus prevents the workpiece from slipping between the rolls, the bending process is faster and better.

Locknuts can be installed on the stud from the side of the handle 14 to obtain a series of workpieces of the same radius, for this, after the first finished workpiece, the locknuts are fixed on the stud 11, pressing them against the support part 12 in the maximum unscrewed position.

Claims (1)

A pipe bender containing a frame with a movable part, back-up rolls with sprockets attached to them and a pressure roll, characterized in that it is equipped with a stud that can be rotated around its axis to raise or lower the movable part of the frame in which the pressure roll is located, and to a handle is attached to one of the backup rolls for its rotation, and an asterisk is attached to the pressure roll, while the said sprockets of the backup rolls and the pressure roll are coupled to each other with the possibility of transferring rotation from the backup roll with the handle attached to it to the other backup roll and then to the pressure roller. roll.

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