Metal hot bending device

Abstract

The utility model discloses a metal hot bending device, which relates to the technical field of metal bending and comprises a bottom plate. The spraying holes are formed in the bottom plate and used for heating the pipe fittings; the fixed wheel and the two moving wheels are arranged on the bottom plate in a sliding mode, and the two moving wheels move so as to push the two ends of the pipe fitting respectively; the two fixing mechanisms are arranged on the bottom plate, each fixing mechanism comprises a driving wheel and an auxiliary wheel, the driving wheels and the auxiliary wheels are used for clamping pipe fittings, and the driving wheels rotate so that the pipe fittings can move in the axial direction. The driving wheel is driven to rotate through the driving motor, so that the pipe fitting can move along the axial direction conveniently. During heating, the driving wheel can drive the pipe fitting to transversely move back and forth in the axial direction, and the to-be-bent part of the pipe fitting is evenly heated. And meanwhile, the servo motor can drive the two racks through the gear to enable the pipe fitting to roll in situ between the driving wheel and the auxiliary wheel, flames sprayed out of the spraying holes can heat the rotating pipe fitting, and the uniform heating effect on the pipe fitting is further improved.

Description

A metal hot bending device Technical Field

[0001] This utility model relates to the field of metal bending technology, and in particular to a metal hot bending device. Background Technology

[0002] Hot bending is a common metal processing method. Metals have high hardness and low plasticity at room temperature; direct bending may lead to fracture or springback. Heating increases the ductility of the metal, making it easier to deform plastically and reducing processing difficulty. After heating, the yield strength of the metal decreases, reducing the required bending force, which is especially suitable for thick-walled materials or high-strength alloys. Furthermore, heating softens the material, reducing internal stress and making it less prone to cracking after bending.

[0003] When existing metal hot bending equipment heats metal pipes, it generally uses acetylene to heat the bent part of the pipe. However, the heating range of the flame emitted from the acetylene nozzle is limited, and it is impossible to heat the bent part of the metal pipe as a whole. This can easily lead to uneven heating of the bent part of the pipe, resulting in a low yield of hot bending due to uneven temperature. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing a metal hot bending device that uniformly heats the bent part of a metal pipe to improve the hot bending quality of the metal pipe.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A metal hot bending apparatus for hot bending of pipe fittings, comprising:

[0007] Base plate;

[0008] Spray nozzles, located on the base plate, are used to heat the pipe fittings;

[0009] The fitting has a fixed wheel and two movable wheels. The two movable wheels are slidably mounted on the base plate. The two movable wheels move to push the two ends of the pipe fitting respectively.

[0010] And two fixing mechanisms, which are set on the base plate. Each fixing mechanism includes a drive wheel and an auxiliary wheel. The drive wheel and the auxiliary wheel are used to clamp the pipe fitting. The drive wheel rotates to make the pipe fitting move axially.

[0011] Each fixing mechanism also includes two racks and a gear. One end of each rack is rotatably connected to the drive wheel and the auxiliary wheel, respectively. The gear meshes with the racks so that the gear drives the racks to move in opposite directions, thereby causing the drive wheel and the auxiliary wheel to move in opposite directions and drive the pipe to rotate.

[0012] Furthermore, each fixing mechanism also includes a mounting box, which is fixedly connected to the base plate, a gear is rotatably connected to the inside of the mounting box, and two racks are slidably connected to the inside of the mounting box.

[0013] Furthermore, the mounting box contains a servo motor, the output shaft of which is connected to a gear to drive the gear to reciprocate.

[0014] Furthermore, the mounting box contains a drive motor, the output shaft of which is equipped with a transmission gear, and the drive wheel is equipped with a gear post that meshes with the transmission gear.

[0015] Furthermore, the side wall of the mounting box has two circular through holes, through which the drive wheel and the auxiliary wheel pass respectively.

[0016] Furthermore, the mounting box is located on the side of the base plate near the moving wheels.

[0017] Furthermore, the drive wheels and auxiliary wheels are arranged in parallel.

[0018] Furthermore, the nozzle is an acetylene nozzle, and the nozzle is directed towards the bent part of the pipe.

[0019] Furthermore, a push rod is provided on the base plate, and a push plate is provided at one end of the push rod. Two moving wheels are rotatably connected to the push plate.

[0020] Furthermore, both the drive wheel and the auxiliary wheel have rubber sleeves on their outer walls.

[0021] The beneficial effects of this utility model are as follows:

[0022] In this invention, the metal hot bending device uses a drive motor to rotate the drive wheel, facilitating the axial movement of the pipe and aligning the part to be bent with the nozzle. The flame emitted from the nozzle heats the outer wall of the pipe. During heating, the drive wheel moves the pipe laterally back and forth along the axial direction, uniformly heating the part to be bent. Simultaneously, a servo motor drives a gear to reciprocate, causing the pipe to roll between the drive wheel and auxiliary wheel via two racks. The flame emitted from the nozzle heats the rotating pipe, further enhancing the uniform heating effect on the part to be bent and improving the quality of the pipe after hot bending. Attached Figure Description

[0023] Figure 1 is a three-dimensional structural schematic diagram of a metal hot bending device proposed in this utility model;

[0024] Figure 2 is a top view of a metal hot bending device proposed in this utility model.

[0025] Figure 3 is a top view of the pipe fitting structure of a metal hot bending device proposed in this utility model after bending.

[0026] Figure 4 is a side sectional view of the mounting box structure of a metal hot bending device proposed in this utility model.

[0027] Figure 5 is a side sectional view of the mounting box of the metal hot bending device proposed in this utility model after the pipe fitting is rotated.

[0028] In the diagram: 1. Base plate, 2. Drive wheel, 3. Auxiliary wheel, 4. Mounting box, 5. Fixed wheel, 6. Pipe fitting, 7. Moving wheel, 8. Spray hole, 9. Push plate, 10. Push rod, 11. Drive motor, 12. Gear column, 13. Rack, 14. Transmission gear. Detailed Implementation

[0029] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0030] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0031] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0032] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0033] Referring to Figures 1-5, a metal hot bending device is used for hot bending of metal pipes. In order to uniformly heat the bent part of the metal pipe, improve the hot bending quality, and avoid defects.

[0034] The metal hot bending device includes a base plate 1, spray holes 8, fixed wheels 5, two movable wheels 7, and two fixing mechanisms;

[0035] The acetylene nozzle 8 is located on the base plate 1 and faces the bent part of the pipe fitting 6. An acetylene flame can be ejected from the nozzle 8 to heat the pipe fitting 6. The acetylene setting is existing technology and will not be described in detail here.

[0036] A fixed wheel 5 is rotatably connected to a base plate 1. A push rod 10 is mounted on the base plate 1, with a push plate 9 at one end of the push rod 10. Two movable wheels 7 are rotatably connected to the push plate 9. In this embodiment, the push rod 10 is an electric push rod. The electric push rod 10 controls the movement of the two movable wheels 7, thereby pushing the two ends of the pipe fitting 6 to cooperate with the fixed wheel 5 located in the middle of the pipe fitting 6, thus bending the pipe fitting 6. The bending angle of the pipe fitting 6 can be controlled by controlling the stroke of the electric push rod 10. The control of the electric push rod 10 is prior art and will not be described in detail here.

[0037] Two fixing mechanisms are set on the base plate 1. Each fixing mechanism includes a mounting box 4 fixedly connected to the base plate 1 and a drive wheel 2 and an auxiliary wheel 3 arranged in parallel. The side wall of the mounting box 4 has two circular through holes. The drive wheel 2 and the auxiliary wheel 3 pass through the two circular through holes respectively. The pipe 6 is located between the drive wheel 2 and the auxiliary wheel 3, so that the pipe 6 can be clamped.

[0038] The mounting box 4 contains a drive motor 11. The output shaft of the drive motor 11 is equipped with a transmission gear, and the drive wheel 2 is equipped with a gear post 12, which meshes with the transmission gear. The drive motor 11 can drive the gear post 12 to rotate through the transmission gear, thereby causing the drive wheel 2 to rotate. The rotation of the drive wheel 2 causes the pipe 6 to move axially, which facilitates the loading of the pipe 6 and the movement of the pipe 6, so that the part of the pipe 6 to be bent is aligned with the nozzle 8.

[0039] Each fixing mechanism also includes two racks 13 and a gear 14. The gear 14 is rotatably connected to the inside of the mounting box 4, and the two racks 13 are slidably connected to the inside of the mounting box 4. The gear 14 meshes with the two racks 13. One end of the two racks 13 is rotatably connected to the drive wheel 2 and the auxiliary wheel 3, respectively. A servo motor is installed inside the mounting box 4, and the output shaft of the servo motor is connected to the gear 14. The servo motor can drive the gear 14 to rotate reciprocally. Since the two racks 13 are located above and below the gear 14, the gear 14 can drive the two racks 13 to move towards each other. The two racks 13 cause the drive wheel 2 and the auxiliary wheel 3 to move towards each other, driving the pipe 6 to rotate reciprocally. The flame sprayed from the nozzle 8 can heat the rotating pipe 6, thereby uniformly heating the part of the pipe 6 to be bent.

[0040] Furthermore, the outer walls of both the drive wheel 2 and the auxiliary wheel 3 are provided with rubber sleeves. The rubber sleeves can increase the friction between the drive wheel 2 and the auxiliary wheel 3 and the pipe 6, thereby facilitating the lateral movement and rotation of the pipe 6.

[0041] Furthermore, the mounting box 4 is located on the base plate 1 on the side near the moving wheel 7. When the moving wheel 7 pushes the two ends of the pipe 6 to bend it, it facilitates the removal of the two ends of the pipe 6 from the drive wheel 2 and the auxiliary wheel 3.

[0042] The working principle of the metal hot bending device is as follows: First, insert one end of the pipe 6 between the drive wheel 2 and the auxiliary wheel 3. Then, start the drive motor 11. The drive motor 11 drives the gear column 12 to rotate through the transmission gear. The gear column 12 causes the drive wheel 2 to rotate. The rotation of the drive wheel 2 causes the pipe 6 to move axially, which facilitates the feeding of the pipe 6 and aligns the part of the pipe 6 to be bent with the nozzle 8.

[0043] The flame ejected from the nozzle 8 heats the outer wall of the pipe 6. During heating, the drive wheel 2 drives the pipe 6 to move back and forth axially, uniformly heating the part of the pipe 6 to be bent. At the same time, the servo motor drives the gear 14 to rotate reciprocally, causing the two racks 13 to move towards each other. The two racks 13 cause the drive wheel 2 and the auxiliary wheel 3 to move towards each other, causing the pipe 6 to roll in place between the drive wheel 2 and the auxiliary wheel 3. The flame ejected from the nozzle 8 heats the rotating pipe 6, thus uniformly heating the part of the pipe 6 to be bent.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A metal hot bending device for hot bending of pipe fittings (6), characterized in that, include: A base plate (1); a nozzle (8) disposed on the base plate (1) for heating the pipe fitting (6); a fixed wheel (5) and two movable wheels (7), the two movable wheels (7) being slidably disposed on the base plate (1) and moving to push the two ends of the pipe fitting (6) respectively; and two fixing mechanisms disposed on the base plate (1), each fixing mechanism including a drive wheel (2) and an auxiliary wheel (3), the drive wheel (2) and the auxiliary wheel (3) being used to clamp the pipe fitting (6). The pipe fitting (6) is rotated by the drive wheel (2) to move the pipe fitting (6) axially; each of the fixing mechanisms also includes two racks (13) and a gear (14), one end of the two racks (13) is rotatably connected to the drive wheel (2) and the auxiliary wheel (3) respectively, and the gear (14) meshes with the two racks (13) so that the gear (14) drives the two racks (13) to move towards each other, thereby causing the drive wheel (2) and the auxiliary wheel (3) to move towards each other, and driving the pipe fitting (6) to rotate.

2. The metal hot bending device according to claim 1, characterized in that: Each of the fixing mechanisms further includes a mounting box (4), which is fixedly connected to the base plate (1), the gear (14) is rotatably connected to the inside of the mounting box (4), and the two racks (13) are slidably connected to the inside of the mounting box (4).

3. The metal hot bending device according to claim 2, characterized in that: The mounting box (4) is equipped with a servo motor inside. The output shaft of the servo motor is connected to the gear (14) to drive the gear (14) to reciprocate.

4. A metal hot bending device according to claim 2, characterized in that: The mounting box (4) is equipped with a drive motor (11), the output shaft of the drive motor (11) is equipped with a transmission gear, the drive wheel (2) is equipped with a gear post (12), and the gear post (12) meshes with the transmission gear.

5. A metal hot bending device according to claim 2, characterized in that: The side wall of the mounting box (4) has two circular through holes, through which the drive wheel (2) and the auxiliary wheel (3) pass respectively.

6. A metal hot bending device according to claim 2, characterized in that: The mounting box (4) is located on the base plate (1) on the side near the moving wheel (7).

7. A metal hot bending device according to claim 1, characterized in that: The drive wheel (2) and the auxiliary wheel (3) are arranged in parallel.

8. A metal hot bending device according to claim 1, characterized in that: The nozzle (8) is an acetylene nozzle, and the nozzle (8) is directed toward the bent part of the pipe fitting (6).

9. A metal hot bending device according to claim 1, characterized in that: A push rod (10) is provided on the base plate (1), and a push plate (9) is provided at one end of the push rod (10). The two moving wheels (7) are rotatably connected to the push plate (9).

10. A metal hot bending device according to claim 1, characterized in that: Both the drive wheel (2) and the auxiliary wheel (3) have rubber sleeves on their outer walls.

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