A pipe bending device

Abstract

The utility model relates to a kind of pipe bending device, including steel platform, middle frequency heating component, inlet guide frame, outlet support rack and three-axis roller assembly.Bend radius flexible adjustable, by replacing or adjusting the position and combination of roller group on platform, get the bend radius required, completely get rid of the space bondage of 1:1 profiling track;High space utilization, device body is fixed platform, without huge movement track, greatly save the equipment floor area, can be installed and used in conventional factory building;Manufacture and implementation cost is low, and device structure is simple.

Description

Technical Field

[0001] This utility model relates to the field of metal pipe plastic processing technology, and more specifically, to a pipe bending device. Background Technology

[0002] In the industrial manufacturing sector, a large number of seamless steel pipes need to be bent into various radii ranging from large to small according to usage requirements. The widely used "medium frequency pipe bending machine" is a specialized piece of equipment for achieving this process. Its working principle is as follows: the clamping device at the front of the machine holds the steel pipe, and the bottom wheel set drives the steel pipe to move along a preset track. The bending radius of the steel pipe is in a 1:1 ratio with the radius of the machine's movement track.

[0003] However, this working principle based on a 1:1 contour track has significant drawbacks. When bending pipes with ultra-large radii (such as tens or even hundreds of meters, commonly seen in large storage tank coils), the equipment is required to have a huge movement space and track of the same scale. This is extremely difficult or even impossible to achieve in a typical factory or prefabrication site, severely limiting the production of ultra-large radius pipe bends and causing a great waste of space.

[0004] Therefore, there is an urgent need for an innovative pipe bending device that can overcome the limitations of space and efficiently and conveniently achieve pipe bending operations, especially for ultra-large bending radii. Utility Model Content

[0005] The present invention aims to provide a pipe bending device with simple structure, convenient adjustment and high space utilization.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A pipe bending device includes a steel plate platform, a medium-frequency heating assembly, an inlet guide frame, an outlet support frame, and a three-axis roller assembly. The medium-frequency heating assembly includes a medium-frequency power supply and an induction heating coil. The inlet guide frame includes a flared guide sleeve and is installed in front of the three-axis roller assembly. The outlet support frame includes a multi-segment bracket and is installed behind the three-axis roller assembly. The three-axis roller assembly is installed above the steel plate platform. Each set of three-axis roller assemblies includes a positioning block, rollers, and a support module. By adjusting the installation position of the three-axis roller assembly on the steel plate platform, the bending radius formed by the three rollers can be changed.

[0007] Specifically, the roller is made of heat-resistant alloy steel, and the working surface of the roller is coated to improve wear resistance; Specifically, the working surface of the roller is coated with a coating to reduce the coefficient of friction; Specifically, the steel plate platform is provided with several positioning slots, and the three-axis roller assembly is fixed to the positioning slots by bolt assembly pins; Specifically, the positioning groove includes an upper positioning groove and a lower positioning groove set on the steel plate platform. Several upper positioning grooves and lower positioning grooves are set from left to right along the curved pipe path, and rollers are respectively installed on the upper positioning groove and the lower positioning groove.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: The bending radius is flexibly adjustable. By changing or adjusting the position and combination of the roller groups on the platform, the desired bending radius can be obtained, completely eliminating the spatial constraints of 1:1 contour tracks. It boasts high space utilization; the device itself is a fixed platform, eliminating the need for large moving tracks and significantly saving floor space. It can be installed and used in conventional factory buildings. Manufacturing and implementation costs are low; the device has a simple structure, with main materials being steel plates and forgings, making processing and manufacturing easy and inexpensive. It is convenient to change and highly adaptable; the modular design of each roller group allows for flexible adjustment of the required bending radius according to production needs. The device can also be easily moved or placed, only installed when in use, without affecting other uses of the site. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a front external view of the pipe bending device; Figure 2 This is an installation diagram of the positioning block for the pipe bending device; Figure 3 This is a structural diagram of the pipe bending device; Figure 4 This is a partial exploded view of the pipe bending device; In the picture: 1. Steel plate platform; 2. Induction heating coil; 3. Entrance guide frame; 4. Three-axis roller assembly; 41. Positioning block; 42. Roller; 421. First roller; 422. Second roller; 423. Third roller; 43. Support module; 5. Positioning slot; 51. First slot; 52. Second slot; 53. Third slot; 54. Fourth slot; 55. Fifth slot; 56. Sixth slot; 57. Seventh slot; 58. Eighth slot; 59. Ninth slot; 6. Bolt assembly. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0012] like Figure 1-4 As shown, a pipe bending device includes a steel plate platform 1, a medium-frequency heating component, an inlet guide frame 3, an outlet support frame, and a three-axis roller assembly 4. The medium-frequency heating component includes a medium-frequency power supply and an induction heating coil 2. The inlet guide frame 3 includes a flared guide sleeve and is installed in front of the three-axis roller assembly 4. The outlet support frame includes a multi-section bracket, which is existing technology. The multi-section bracket includes rollers, support columns, and a base platform from top to bottom, all made of heat-resistant steel. The base platform has wheels and wheel locks at the bottom. The outlet support frame is installed behind the three-axis roller assembly 4. The three-axis roller assembly 4 is installed above the steel plate platform 1. Each three-axis roller assembly 4 includes a positioning block 41, a roller 42, and a support module 43.

[0013] In the above embodiment, the roller 42 is made of heat-resistant alloy steel, and the working surface of the roller 42 is provided with a coating to improve wear resistance, such as a chromium carbide-nickel chromium coating sprayed using the HVOF process. In the above embodiments, the working surface of the roller 42 is provided with a coating that reduces the coefficient of friction, such as a DLC diamond-like carbon coating. In the above embodiment, the steel plate platform 1 is provided with a plurality of positioning grooves 5, and the three-axis roller assembly 4 is fixed to the positioning grooves 5 by bolt assembly 6 or pin or quick clamp device; In the above embodiment, the positioning groove 5 includes an upper positioning groove 5 and a lower positioning groove 5 disposed on the steel plate platform. A plurality of upper and lower positioning grooves 5 are arranged from left to right along the curved pipe path. Rollers 42 are respectively installed on the upper and lower positioning grooves 5. The upper positioning groove 5 has six slots, from left to right: first slot 51, second slot 52, third slot 53, fourth slot 54, fifth slot 55, and sixth slot 56. The lower positioning groove 5 has three slots, from left to right: seventh slot 57, eighth slot 58, and ninth slot 59. Rollers are installed in the first slot 51, the second slot 52, and the seventh slot 57 to process smaller-sized bends; rollers are installed in the fourth slot 54, the sixth slot 56, and the ninth slot 59 to process larger-sized bends; rollers are installed in the first slot 51, the sixth slot 56, and the eighth slot 58 to process extra-large-sized bends, and so on, allowing for bends of different sizes; the device of this utility model is mainly composed of a sturdy steel plate welding platform, the height of which is aligned with the outlet height of the induction heating coil 2 that it is paired with.

[0014] The working principle of this utility model is as follows: In use, firstly, the rollers 42 and support modules 43 are fixed to the pre-set positioning slots 5 on the steel plate platform 1 with bolts, completing the initial setup before processing. Secondly, the intermediate frequency heating component is activated, and the intermediate frequency power supply powers the induction heating coil 2, causing it to generate an alternating magnetic field. When the pipe passes through the induction heating coil 2 at a constant speed, its local surface and interior will rapidly generate heat, quickly reaching the temperature required for plastic deformation, thereby greatly reducing its deformation resistance. Thirdly, the locally softened pipe enters the working area of ​​the three-axis roller assembly 4 from the inlet guide frame 3. The three rollers 42, made of heat-resistant alloy steel and coated with wear-resistant or friction-reducing coatings, form a stable bending force point under the fixation of the positioning block 41 and the support module 43. Roller 42 rotates under the friction of the pipe. The pipe first contacts the first roller 421 and then the second roller 422, together applying the required bending moment to the red-hot pipe, causing it to undergo plastic deformation. Next, the second roller 422 and the third roller 423 contact the pipe, causing it to undergo plastic deformation. Finally, the formed bent pipe is sent out from the third roller 423 and received and supported by the multi-section bracket of the outlet support frame. The base platform of the multi-section bracket is equipped with wheels and wheel locks. Opening the wheel locks moves the wheels, closing the wheel locks fixes the wheels. This design allows the multi-section bracket to flexibly adapt to bent pipe sections at different angles by moving the multi-section bracket, ensuring that it will not spring back or deform due to its own weight until it cools and sets naturally.

[0015] If the bending radius of the pipe needs to be changed during processing, simply loosen the bolt assembly 6 and move the entire three-axis roller assembly 4 into the positioning groove 5 and re-fix it, achieving rapid adjustment. After processing is completed, turn off the intermediate frequency power supply, allow the equipment to cool down, and then perform maintenance on each part before use.

[0016] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A pipe bending device, characterized in that: It includes a steel plate platform (1), a medium frequency heating component, an inlet guide frame (3), an outlet support frame, and a three-axis roller assembly (4); The medium-frequency heating assembly includes a medium-frequency power supply and an induction heating coil (2); The inlet guide frame (3) includes a flared guide sleeve, and the inlet guide frame (3) is installed in front of the three-axis roller assembly (4); The outlet support frame includes a multi-section bracket, which is installed behind the three-axis roller assembly (4); The three-axis roller assembly (4) is installed above the steel plate platform (1). The three-axis roller assembly (4) includes a positioning block (41), rollers (42) and a support module (43). By adjusting the installation position of the three-axis roller assembly (4) on the steel plate platform (1), the bending radius formed by the three rollers (42) can be changed.

2. The pipe bending device according to claim 1, characterized in that: The roller (42) is made of heat-resistant alloy steel, and the working surface of the roller (42) is provided with a coating to improve wear resistance.

3. The pipe bending device according to claim 1, characterized in that: The working surface of the roller (42) is provided with a coating that reduces the coefficient of friction.

4. The pipe bending device according to claim 1, characterized in that: The steel plate platform (1) is provided with a plurality of positioning grooves (5), and the three-axis roller assembly (4) is fixed to the positioning grooves (5) by bolt assembly (6).

5. The pipe bending device according to claim 4, characterized in that: The positioning groove (5) includes an upper positioning groove (5) and a lower positioning groove (5) set on the steel plate platform. Several upper positioning grooves (5) and lower positioning grooves (5) are set from left to right along the curved pipe path. Rollers (42) are respectively installed on the upper positioning groove (5) and the lower positioning groove (5).

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