A stainless steel pipe bending device

Abstract

The application relates to the technical field of steel pipe bending equipment, and discloses a stainless steel pipe bending device, which comprises a rotary supporting platform, the rotary supporting platform is movably arranged on a pedestal, the rotary supporting platform is driven to rotate by a steel pipe bending driving device fixedly arranged on the pedestal, the outer side of the rotary supporting platform is designed as a conical surface, a limiting device is fixedly installed on the pedestal, the limiting device comprises an inclined slide way matched with the conical surface of the rotary supporting platform, a steel pipe clamping block is arranged in the inclined slide way and fixed by a pin shaft matched with a nut, and a limiting groove is formed in the side of the steel pipe clamping block facing the pin shaft. The position of the steel pipe clamping block in the inclined slide way corresponds to the radius value of the height of the conical surface of the rotary supporting platform, so that the stainless steel pipe is bent into a required radius, the steel pipe bending component with a corresponding diameter does not need to be replaced according to the radius of the stainless steel pipe bending, the use is facilitated, and the efficiency of the stainless steel pipe bending is improved.

Description

Technical Field

[0001] This application relates to the field of steel pipe bending equipment technology, and more particularly to a stainless steel pipe bending device. Background Technology

[0002] Stainless steel pipes, as an important basic industrial material, are widely used in petrochemical, energy and power, construction and decoration, food and medicine, and machinery manufacturing. In the processing and application of stainless steel pipes, they often need to be bent into specific angles or shapes to meet the needs of different working conditions. Therefore, pipe bending machines have become key post-processing equipment. Pipe bending machines apply pressure to the pipe through molds to achieve cold bending or hot bending. They are widely used in pipeline system installation, structural component manufacturing, and other fields. At present, pipe bending equipment is developing towards intelligent automation, high precision, and multi-functionality to meet the needs of complex pipe processing. Stainless steel pipe bending devices and pipe bending machines together constitute an important manufacturing link for stainless steel pipes from raw materials to finished pipe fittings.

[0003] For example, Chinese invention patent with publication number CN118321407B discloses a bending device and method for steel pipe production, including steel pipe fittings and a processing platform set on a processing box, and also includes a positioning part and a bending part. The positioning part is set on the processing platform for quickly positioning the center point of the steel pipe fittings, and the bending part is set on the processing platform for realizing the rapid bending of the steel pipe fittings, so that steel pipes of different diameters are always on the same center line as the bending part during bending.

[0004] However, in the use of existing steel pipe bending equipment, the outer side of the bending seat used for bending the steel pipe is fixed. That is, when the steel pipe rotates along its bending seat to bend, the bending radius of the steel pipe remains unchanged, which is the radius of the bending seat. When producing stainless steel pipes with different bending radii, it is necessary to frequently change the bending seat of the corresponding size, which is quite troublesome and leads to a reduction in the bending efficiency of stainless steel pipes. Summary of the Invention

[0005] This application proposes a stainless steel pipe bending device, which has the advantage of easy adjustment and control of the bending radius of stainless steel pipes, in order to solve the problem of low efficiency of existing steel pipe bending equipment when producing stainless steel pipes with different bending radii.

[0006] To achieve the above objectives, this application adopts the following technical solution: a stainless steel pipe bending device, comprising: A rotating support platform is movably mounted on a pedestal and is driven to rotate by a steel pipe bending drive device fixedly mounted on the pedestal. The outer side of the rotating support platform is designed with a conical surface.

[0007] Two limiting devices are provided. One limiting device is fixedly mounted on the base, and the other is fixedly mounted to the rotating support platform, allowing the rotating support platform to rotate with the limiting device. Each limiting device includes an inclined slide that adapts to the conical surface of the rotating support platform. A steel pipe clamp is installed within the inclined slide and secured by a pin and nut, making the position of the steel pipe clamp adjustable within the inclined slide. A limiting groove is formed on the side of the steel pipe clamp facing the pin. The limiting groove, in conjunction with the conical surface of the rotating support platform, limits the movement of the stainless steel pipe. The distance between the center of the limiting groove and the conical surface of the rotating support platform is set as the radius of the stainless steel pipe. This allows the stainless steel pipe to pass through the limiting groove of the steel pipe clamp and bend, thus controlling the movement of the pipe. The device drives the positioning shaft to rotate the rotating support platform and the limiting device together. The limiting groove of the steel pipe clamping block cooperates with the conical surface of the rotating support platform to limit the stainless steel pipe, causing the stainless steel pipe to bend along the conical surface of the rotating support platform. The bending radius of the stainless steel pipe is controlled by the position of the stainless steel pipe on the conical surface of the rotating support platform. By adjusting the position of the steel pipe clamping block on the inclined slide, the position of the stainless steel pipe on the conical surface of the rotating support platform is controlled. By utilizing the uniform diameter variation design of the conical surface of the rotating support platform, the required bending radius can be obtained. Compared with existing pipe bending machines, there is no need to change the bending component with the corresponding radius to control the bending radius of the stainless steel pipe, which is convenient to use and improves the production efficiency of stainless steel pipes.

[0008] Furthermore, a support plate located on one side of the rotating support platform is fixedly installed on the top of the pedestal. A positioning horizontal plate is fixedly installed on the top of the support plate. A positioning shaft is rotatably connected between the pedestal and the positioning horizontal plate through a bearing. The positioning shaft is driven to rotate by a steel pipe bending drive device. The rotating support platform is fixedly mounted on the positioning shaft so that the positioning shaft can be driven to rotate by the steel pipe bending drive device, thereby driving the rotating support platform to rotate, so that the stainless steel pipe bends along the conical surface of the rotating support platform.

[0009] Furthermore, the steel pipe bending drive device consists of a servo motor and a reducer. The output shaft of the servo motor is connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the positioning shaft. By setting the servo motor, the rotation angle of the rotating support platform driven by the positioning shaft can be precisely controlled, thereby controlling the curvature of the stainless steel pipe bending. Moreover, by driving the output shaft of the servo motor and the positioning shaft through the reducer, the load of the steel pipe bending drive device is increased, enabling the stainless steel pipe to bend.

[0010] Furthermore, the steel pipe bending drive device also includes a PLC controller and a rotary encoder mounted on the output shaft of the reducer. The rotary encoder is signal-connected to the PLC controller, and the PLC controller is signal-connected to the servo motor. The rotary encoder is used to detect the rotation angle of the reducer output shaft and transmit the detection signal to the PLC controller.

[0011] The PLC controller presets a target rotation angle, which is the predetermined angular displacement of the reducer output shaft from its initial position during a single bending motion, used to determine the single rotation stroke of the rotating support platform. When the servo motor drives the positioning shaft and the rotating support platform to rotate via the reducer, a rotary encoder detects the rotation angle of the reducer output shaft in real time. When the angular displacement of the reducer output shaft from its initial position reaches the preset target rotation angle, the PLC controller controls the servo motor to stop, thus ending the current bending motion.

[0012] The preset angle value can be set to 90 degrees. When the rotary encoder detects that the rotation angle of the reducer output shaft reaches 90 degrees, the PLC controller controls the servo motor to stop, thus completing the current bending action. After the current bending action is completed, the conveying of the stainless steel pipe stops, and the PLC controller controls the servo motor to rotate in the opposite direction, causing the positioning shaft to drive the rotating support platform and the limit device that rotates with the rotating support platform to rotate in the opposite direction to the initial position and then stop. Subsequently, the conveying equipment continues to push the stainless steel pipe to move, waiting for the next bending action.

[0013] Furthermore, the diameter of the conical surface of the rotating support platform increases uniformly from top to bottom, so that the conical surface of the rotating support platform can also support the stainless steel pipe, so as to cooperate with the limiting groove of the steel pipe clamp block to ensure that the stainless steel pipe remains stable on the same plane when bending, thereby ensuring the accuracy of the bending angle.

[0014] Furthermore, a positioning mounting plate is fixedly installed on the top of the platform, and one of the limiting devices is fixedly installed on the positioning mounting plate so that the limiting device is fixed on the platform by the positioning mounting plate. The other limiting device rotates with the rotating support platform. The limiting groove of the steel pipe clamp in the two limiting devices is used to keep the stainless steel stable. And by simultaneously adjusting the position of the two steel pipe clamps on the inclined slide, the limiting effect of the stainless steel pipe with different bending angles can be adapted.

[0015] Furthermore, the top and bottom of the rotating support platform are respectively fixedly connected to linkage plates. The limiting device includes a limiting block, which is fixedly disposed between the two linkage plates and located on one side of the rotating support platform. The side of the limiting block facing the rotating support platform is designed with an inclined surface, and the inclined surface of the limiting block is adapted to the inclination of the conical surface on the outer side of the rotating support platform. A first baffle and a second baffle are respectively fixedly installed on both sides of the limiting device. The sides of the first baffle and the second baffle extend outward from the inclined surface of the limiting block. The inclined surface of the limiting block and the side of the first baffle and the second baffle facing each other form an inclined slide. The steel pipe clamp is fixed by the inclined slide formed by the limiting block, the first baffle and the second baffle, so as to fix the steel pipe clamp in the inclined slide according to the bending angle required of the stainless steel pipe.

[0016] Furthermore, the first and second baffles are provided with grooves that connect to the interior of the inclined slide, and the grooves are parallel to the inclined surface of the second baffle. A pin is inserted into the steel pipe clamp, and there are no fewer than two pins. The head of the pin is movably connected to the side of the first baffle away from the limiting block. The first baffle is provided with a slot to accommodate the head of the pin, which facilitates the placement of the head of the pin. The end of the pin extends out of the groove, and a nut located on the side of the second baffle away from the inclined slide is threaded onto the end of the pin. The threaded connection between the nut and the pin fixes the position of the steel pipe clamp in the inclined slide, thereby ensuring that the steel pipe clamp remains stable when the stainless steel pipe is bent.

[0017] The beneficial effects of this invention are as follows: 1. The stainless steel pipe bending device provided in this application utilizes a rotating support platform with a conical surface cooperating with a steel pipe clamp block installed in an inclined slide on one side. The steel pipe clamp block rotates together with the rotating support platform. By using the position of the steel pipe clamp block in the inclined slide to correspond to the radius of the conical surface height of the rotating support platform, the stainless steel pipe is bent to the required radius. Compared with existing pipe bending machines, there is no need to replace the steel pipe bending component with a corresponding diameter according to the bending radius of the stainless steel pipe, which makes it more convenient to use, improves the bending efficiency of stainless steel pipe, and thus improves the production efficiency of stainless steel pipe.

[0018] 2. By using the limiting groove on the steel pipe clamp to correspond to the diameter of the stainless steel pipe, different sizes of stainless steel pipes can be accommodated by replacing the steel pipe clamp with steel pipe clamps of different sizes of limiting grooves. This is convenient, improves the practicality of the stainless steel pipe bending equipment, and helps to improve the overall production efficiency of the stainless steel pipe bending device.

[0019] 3. The rotation angle of the reducer output shaft is detected by a rotary encoder, and the PLC controller controls the servo motor to stop and reverse reset according to the detection signal, which can control the single rotation stroke of the rotary support platform. After the rotary support platform returns to the initial position, the conveying equipment can continue to push the stainless steel pipe to move and perform the next bending action, which facilitates the continuous processing of stainless steel pipes and makes it easier to control the bending angle of the stainless steel pipes. This further improves the practicality of the stainless steel pipe bending equipment and makes it more convenient to use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the middle section structure; Figure 3 for Figure 1 Schematic diagram of the middle limit device; Figure 4 for Figure 3 The front view; Figure 5 for Figure 3 Explosion diagram of the middle limit device; Figure 6 This is a schematic diagram of the state of the stainless steel pipe before it is bent. Figure 7 This is a schematic diagram showing the state of a stainless steel pipe after it has been bent.

[0021] In the diagram: 1. Base; 2. Support plate; 3. Positioning horizontal plate; 4. Positioning rotating shaft; 5. Steel pipe bending drive device; 6. Rotating support platform; 7. Positioning mounting plate; 8. Linkage plate; 9. Limiting device; 901. Limiting block; 902. First baffle; 903. Second baffle; 904. Slide groove; 905. Steel pipe clamping block; 906. Pin shaft. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figures 1-2A stainless steel pipe bending device includes a base 1, a support plate 2 fixedly mounted on the top of the base 1, a positioning horizontal plate 3 fixedly mounted on the top of the support plate 2, a positioning shaft 4 rotatably connected between the base 1 and the positioning horizontal plate 3 via a bearing, and a steel pipe bending drive device 5 for driving the positioning shaft 4 to rotate fixedly mounted on the bottom of the base 1. The steel pipe bending drive device 5 consists of a servo motor and a reducer. A rotating support platform 6 located above the base 1 is fixedly mounted on the positioning shaft 4. A flat bearing is provided between the bottom of the rotating support platform 6 and the top of the base 1. The steel pipe bending drive device 5 drives the output shaft to rotate. The moving positioning shaft 4 and the steel pipe bending drive device 5 rotate. The outer side of the rotating support platform 6 is designed with a conical surface, and the outer diameter of the rotating support platform 6 decreases uniformly from bottom to top. The top of the platform 1 is fixedly installed with a positioning mounting plate 7 located on one side of the steel pipe bending drive device 5. The top and bottom of the rotating support platform 6 are respectively fixedly connected with linkage plates 8. Limiting devices 9 are fixedly installed between the two linkage plates 8 and on one side of the positioning mounting plate 7. That is, the limiting device 9 located between the two linkage plates 8 rotates with the rotating support platform 6, and the limiting device 9 located on the side of the positioning mounting plate 7 remains fixed.

[0024] The steel pipe bending drive device 5 also includes a PLC controller and a rotary encoder mounted on the output shaft of the reducer. The rotary encoder is connected to the PLC controller via signal transmission, and the PLC controller is connected to the servo motor via signal transmission. The rotary encoder detects the rotation angle of the reducer output shaft in real time and transmits the detection signal to the PLC controller. The PLC controller presets an angle value, which is used to compare with the real-time rotation angle of the reducer output shaft detected by the rotary encoder.

[0025] For example, the preset angle value can be set to 90 degrees. When the rotary encoder detects that the rotation angle of the reducer output shaft reaches 90 degrees, the PLC controller controls the servo motor to stop. After the servo motor stops, the PLC controller controls the servo motor to rotate in the opposite direction, causing the positioning shaft 4 to drive the rotary support platform 6 and the limit device 9 that rotates with the rotary support platform 6 to rotate in the opposite direction to the initial position and then stop.

[0026] like Figure 1 , Figures 3-5A limiting device 9 includes a limiting block 901. The side of the limiting block 901 facing the rotating support platform 6 is designed with an inclined surface, and the inclined surface of the limiting block 901 is adapted to the inclination of the conical surface on the outer side of the rotating support platform 6. A first baffle 902 and a second baffle 903 are fixedly installed on both sides of the limiting device 9, respectively. The first baffle 902 and the second baffle 903 can be fixed to the limiting block 901 by bolts. The sides of the first baffle 902 and the second baffle 903 extend out of the outer side of the inclined surface of the limiting block 901, and the sides of the first baffle 902 and the second baffle 903 are adapted to the inclined surface on one side of the limiting block 901. The inclined surface of the limiting block 901 and the side of the first baffle 902 and the second baffle 903 facing each other form an inclined slide. The second baffle 903 and the first baffle 902 are provided with a groove 904 that connects to the inside of the inclined slide, and the groove 904 is arranged parallel to the inclined surface of the second baffle 903.

[0027] A steel pipe clamp 905 is movably mounted inside the inclined slide. Pins 906 are inserted into the steel pipe clamp 905, with at least two pins 906. The head of each pin 906 is movably connected to the side of the first baffle 902 away from the limiting block 901. The first baffle 902 has a slot (not shown in the diagram) to accommodate the head of the pin 906. The end of each pin 906 extends beyond the slide groove 904, and a nut is threaded onto the end of the pin 906 located on the side of the second baffle 903 away from the inclined slide. The threaded connection between the nut and the pin 906 locks the steel pipe clamp 905 in place. The position of the steel pipe clamp 905 within the inclined slide is thus determined. For fixing, the steel pipe clamp 905 has a limiting groove on one side facing the conical surface of the rotating support platform 6. The radius of the limiting groove corresponds to the radius of the stainless steel pipe. By disassembling and replacing different rotating support platforms 6, the limiting groove on the rotating support platform 6 can be made to correspond to the radius of the steel pipe to be bent, so that steel pipes of different sizes can be bent easily. The stainless steel pipe to be bent passes through the limiting groove of the steel pipe clamp 905, and the limiting groove of the steel pipe clamp 905 cooperates with the conical surface of the rotating support platform 6 to clamp the stainless steel pipe. Thus, when the steel pipe clamp 905 rotates with the rotating support platform 6, the stainless steel pipe bends along the conical surface of the rotating support platform 6.

[0028] In use, first, select the corresponding size of the rotating support platform 6 with the corresponding limiting groove according to the radius of the steel pipe to be bent. That is, the distance between the center of the limiting groove of the steel pipe clamp 905 and the conical surface of the rotating support platform 6 is the radius of the stainless steel pipe. Insert the rotating support platform 6 from the top of the inclined slide, and according to the diameter of the steel pipe to be bent, position the steel pipe clamp 905 at the corresponding height of the rotating support platform 6, that is, the radius value at the position of the pin shaft 906 conical surface corresponding to the center of the limiting groove of the steel pipe clamp 905. Then, drive the positioning shaft 4 through the steel pipe bending drive device 5 to rotate the rotating support platform 6 and one of the limiting devices 9 together until the limiting device 9 is located on one side of the other limiting device 9 on the side of the positioning mounting plate 7, that is, as shown. Figure 6 In the state shown, the steel pipe clamps 905 in the two limiting devices 9 are arranged adjacent to each other. Finally, one end of the stainless steel pipe is passed through the limiting grooves in the two steel pipe clamps 905. At the same time as the stainless steel pipe is being transported, the steel pipe bending drive device 5 is activated to drive the positioning shaft 4 to rotate together with the rotating support platform 6, the two linkage plates 8, and the limiting devices 9. The steel pipe clamps 905 in the limiting devices 9 cooperate with the conical surface of the rotating support platform 6 to limit the stainless steel pipe, causing the stainless steel pipe to rotate and bend along the conical surface of the rotating support platform 6, that is, as shown. Figure 7 The diagram shows the state of the steel pipe after bending. During the bending process, the rotary encoder detects the rotation angle of the reducer output shaft in real time and transmits the detection signal to the PLC controller. When the detected rotation angle reaches the preset angle value, the PLC controller controls the servo motor to stop, simultaneously stopping the conveying of the stainless steel pipe. After the servo motor stops, the PLC controller controls the servo motor to rotate in the reverse direction, causing the positioning shaft 4 to drive the rotating support platform 6 and the limit device 9 that rotates with the rotating support platform 6 to rotate in the reverse direction to the initial position and then stop. Subsequently, the conveying equipment continues to push the stainless steel pipe to move, waiting for the next bending action.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stainless steel pipe bending device, characterized in that, include: A rotating support platform is movably mounted on a pedestal and is driven to rotate by a steel pipe bending drive device fixedly mounted on the pedestal. The outer side of the rotating support platform is designed with a conical surface. Two limiting devices are provided. One limiting device is fixedly mounted on the base, and the other limiting device is fixedly mounted on the rotating support platform. The limiting device includes an inclined slide that is adapted to the conical surface of the rotating support platform. A steel pipe clamp is provided in the inclined slide and fixed by a pin and a nut. A limiting groove is opened on the side of the steel pipe clamp facing the pin. The limiting groove cooperates with the conical surface of the rotating support platform to limit the stainless steel pipe. The distance between the center of the limiting groove and the conical surface of the rotating support platform is set as the radius of the stainless steel pipe. The bending radius of the stainless steel pipe is controlled by the position of the stainless steel pipe on the conical surface of the rotating support platform.

2. The stainless steel pipe bending device according to claim 1, characterized in that, A support plate located on one side of the rotating support platform is fixedly installed on the top of the pedestal. A positioning horizontal plate is fixedly installed on the top of the support plate. A positioning shaft is rotatably connected between the pedestal and the positioning horizontal plate through a bearing. The positioning shaft is driven to rotate by a steel pipe bending drive device. The rotating support platform is fixedly mounted on the positioning shaft.

3. The stainless steel pipe bending device according to claim 2, characterized in that, The steel pipe bending drive device consists of a servo motor and a reducer. The output shaft of the servo motor is connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the positioning shaft.

4. The stainless steel pipe bending device according to claim 3, characterized in that, The steel pipe bending drive device also includes a PLC controller and a rotary encoder mounted on the output shaft of the reducer. The rotary encoder is connected to the PLC controller via signal, and the PLC controller is connected to the servo motor via signal. The rotary encoder is used to detect the rotation angle of the output shaft of the reducer and transmit the detection signal to the PLC controller. The PLC controller is used to control the servo motor to stop when the detected rotation angle reaches the preset target rotation angle.

5. The stainless steel pipe bending device according to claim 1, characterized in that, The diameter of the cone surface of the rotating support platform increases uniformly from top to bottom.

6. The stainless steel pipe bending device according to claim 1, characterized in that, A positioning mounting plate is fixedly installed on the top of the pedestal, and one of the limiting devices is fixedly installed on the positioning mounting plate.

7. The stainless steel pipe bending device according to claim 1, characterized in that, The top and bottom of the rotating support platform are respectively fixedly connected to linkage plates. The limiting device includes a limiting block, which is fixedly disposed between the two linkage plates and located on one side of the rotating support platform. The side of the limiting block facing the rotating support platform is designed with an inclined surface, and the inclined surface of the limiting block is adapted to the inclination of the conical surface on the outer side of the rotating support platform. A first baffle and a second baffle are respectively fixedly installed on both sides of the limiting device. The sides of the first baffle and the second baffle extend outward from the inclined surface of the limiting block. The inclined surface of the limiting block and the side of the first baffle and the second baffle facing each other form an inclined slide.

8. The stainless steel pipe bending device according to claim 7, characterized in that, The first baffle and the second baffle are provided with grooves that connect to the interior of the inclined slide, and the grooves are parallel to the inclined surface of the second baffle. A pin is inserted into the steel pipe clamp, and there are no less than two pins. The head of the pin is movably connected to the side of the first baffle away from the limiting block. The first baffle is provided with a slot to accommodate the head of the pin. The end of the pin extends out of the groove, and the end of the pin is threaded with a nut located on the side of the second baffle away from the inclined slide.

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