Elbow pipe positioning device and positioning method thereof

Abstract

The invention discloses a bent pipe positioning device and a positioning method thereof, and belongs to the technical field of bent pipes, the bent pipe positioning device comprises a base table, a pipe bending machine and a linear module, and the pipe bending machine and the linear module are both fixedly connected with the base table; the linear module is provided with a rotary grooving mechanism used for automatically and rotationally cutting U-shaped grooves in the fed pipe fittings. A clamping and positioning mechanism is mounted on the rotary grooving mechanism, is used for automatically rotating and positioning the pipe fitting and is matched with the rotary grooving mechanism to complete U-shaped groove cutting; the clamping and positioning mechanism comprises a moving assembly, a clamping assembly, an ejector block limiting assembly and a positioning assembly. The rotary grooving mechanism and the clamping assembly are both connected with the moving assembly. By means of the mode, the U-shaped notch formed in the bent pipe can be aligned with the U-shaped block on the positioning device, and the pipe fitting and the clamping assembly are prevented from rotating relatively in the pipe bending process.

Description

Technical Field

[0001] This invention relates to the field of pipe bending technology, and more specifically to a pipe bending positioning device and its positioning method. Background Technology

[0002] Pipe bending positioning devices are auxiliary equipment used in pipe bending processes. Their core function is to accurately fix the position and angle of the pipe to be bent. Through adjustable clamps, positioning scales, or sensing systems, they ensure that the bending point and angle of the pipe meet processing requirements, preventing deviation or deformation. They are also adaptable to pipes of different diameters and materials, improving the accuracy, consistency, and production efficiency of pipe bending processes. They are widely used in machinery manufacturing, pipeline installation, and automotive parts industries.

[0003] Chinese patent CN217529009U discloses a fully automatic CNC three-dimensional pipe bending machine, including a processing table. A discharge port is located at the top of the processing table. A support plate is fixedly connected between the front and back sides of the inner wall of the discharge port. A pipe bending mold is fixedly connected to the top of the support plate. A hydraulic rod is fixedly connected to one side of the top of the processing table via a fixing plate. This device indirectly moves the clamping plate away from the pipe by de-energizing the electromagnet, thereby releasing the pipe. An electric telescopic rod extends, causing the two clamping components to move away from each other, allowing the pipe to detach from the clamping components and pass through the discharge port under its own gravity, falling onto a conveying mechanism. The conveying mechanism then transports the pipe to the next production stage for further processing. This device achieves automatic unloading of pipes, avoiding manual unloading operations, reducing labor intensity, and improving processing efficiency. However, this device still has the following problems: During use, the device uses a clamping assembly to clamp and fix the bent pipe before bending. However, for pipes with high processing precision, relying solely on the clamping device for positioning and fixing may result in pipe rotation during the bending process, affecting accuracy.

[0004] Based on this, the present invention designs a pipe bending positioning device and its positioning method to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a pipe bending positioning device and positioning method thereof.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A pipe bending positioning device includes a base, a pipe bending machine, and a straight module; Both the pipe bending machine and the straightening module are fixedly connected to the base. The linear module is equipped with a rotary grooving mechanism for automatically rotary cutting U-shaped grooves into the pipe fittings being fed. The rotary grooving mechanism is equipped with a clamping and positioning mechanism, which is used to automatically rotate and position the pipe fittings, and cooperate with the rotary grooving mechanism to complete the U-groove cutting; The clamping and positioning mechanism includes a moving component, a clamping component, a top material block limiting component, and a positioning component; the rotary grooving mechanism and the clamping component are both connected to the moving component; the clamping component is connected to the top material block limiting component; the top material block limiting component and the positioning component are both connected to the rotary grooving mechanism; the moving component is used to drive the clamping component and the pipe to move back and forth; the clamping component is used to fix the position of the pipe; the top material block limiting component is used to limit the clamping component; and the positioning component is used to position the pipe after grooving.

[0007] Furthermore, the moving component includes a first push cylinder and a moving plate; the first push cylinder is connected to the rotary grooving mechanism; the driving end of the first push cylinder is fixedly connected to the moving plate; and the moving plate is connected to the clamping component.

[0008] Furthermore, the clamping assembly includes an electric gripper and a top material block; both the electric gripper and the top material block are fixedly connected to the moving plate; the top material block is connected to a top material block limiting assembly.

[0009] Furthermore, the top material block limiting assembly includes limiting rods; multiple limiting rods are fixedly connected to the top material block; the limiting rods are connected to the rotary grooving mechanism.

[0010] Furthermore, the positioning component includes a second push cylinder and an arc-shaped positioning block; the second push cylinder is connected to the rotary grooving mechanism; and the driving end of the second push cylinder is fixedly connected to the arc-shaped positioning block.

[0011] Furthermore, the rotary grooving mechanism includes a rotary assembly and a laser cutting assembly; the rotary assembly is connected to the driving end of the linear module; the laser cutting assembly is connected to the base; the first push cylinder, the limit rod, and the second push cylinder are all connected to the rotary assembly; the rotary assembly is used to drive the pipe to rotate, and the laser cutting assembly is used to cut U-shaped grooves on the pipe.

[0012] Furthermore, the rotating assembly includes a servo motor, a rotating disk, and an L-shaped plate; the servo motor is fixedly connected to the L-shaped plate; the drive end of the servo motor is fixedly connected to the rotating disk; the rotating disk is rotatably connected to the L-shaped plate; the L-shaped plate is fixedly connected to the drive end of the linear module; the first push cylinder, the limit rod, and the second push cylinder are all fixedly connected to the rotating disk.

[0013] Furthermore, the laser cutting assembly includes a multi-axis robotic arm and a laser cutting head; the lower end of the multi-axis robotic arm is fixedly connected to the base; the drive end of the multi-axis robotic arm is fixedly connected to the laser cutting head.

[0014] To better achieve the objectives of this invention, the present invention also provides a positioning method for a pipe bending positioning device, comprising the following steps: Step 1: After the operator passes the pipe through the pipe bending machine, the clamping assembly is used to fix the pipe in place; Step 2: Then, the rotating grooving mechanism cuts a U-shaped groove at the upper rear end of the pipe fitting; Step 3: After cutting, the moving component drives the clamping component and the pipe to move backward together under the limit of the top material block limiting component; Step 4: The positioning component positions the pipe fitting through the cut U-shaped groove; Step 5: The rotary grooving mechanism drives the pipe fitting to rotate and flip. After rotation, the rotary grooving mechanism creates a U-shaped groove again on the symmetrical side of the cross-section of the pipe fitting, after the first U-shaped groove is cut. Step 6: The positioning component positions and fixes the pipe fitting through two U-shaped grooves to prevent the pipe fitting from rotating relative to the clamping equipment when bending the pipe; Step 7: The linear module moves the pipe fitting, while the pipe bending machine bends the pipe fitting.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention can realize the alignment of the U-shaped groove on the pipe with the U-shaped block on the positioning device, thereby preventing the pipe fitting and the clamping assembly from rotating relative to each other during the pipe bending process. 2. The present invention can also automatically cut U-shaped grooves into the pipe fittings after they are loaded, and automatically align the U-shaped grooves with the U-shaped blocks. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 A three-dimensional representation of a pipe bending positioning device according to the present invention. Figure 1 ; Figure 2 This is a front view of a pipe bending positioning device according to the present invention; Figure 3 A three-dimensional representation of a pipe bending positioning device according to the present invention. Figure 2 ; Figure 4 A three-dimensional representation of a pipe bending positioning device according to the present invention. Figure 3 ; Figure 5 This is a partial three-dimensional representation of a pipe bending positioning device according to the present invention. Figure 1 ; Figure 6 This is a partial three-dimensional representation of a pipe bending positioning device according to the present invention. Figure 2 .

[0018] The labels in the diagram represent: 1. Base; 2. Rotary grooving mechanism; 21. Rotary component; 211. Servo motor; 212. Rotary disk; 213. L-shaped plate; 22. Laser cutting component; 221. Multi-axis robotic arm; 222. Laser cutting head; 3. Clamping and positioning mechanism; 31. Moving component; 311. First push cylinder; 312. Moving plate; 32. Clamping component; 321. Electric gripper; 322. Top material block; 33. Top material block limiting component; 331. Limiting rod; 34. Positioning component; 341. Second push cylinder; 342. Arc-shaped positioning block; 4. Pipe bending machine; 5. Linear module. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0021] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-6 A pipe bending positioning device includes a base 1, a pipe bending machine 4, and a straight module 5; Both the pipe bending machine 4 and the straightening module 5 are fixedly connected to the base 1; The linear module 5 is equipped with a rotary grooving mechanism 2 for automatically rotary cutting U-shaped grooves for feeding pipe fittings; The rotary grooving mechanism 2 is equipped with a clamping and positioning mechanism 3, which is used to automatically rotate and position the pipe fitting, and cooperate with the rotary grooving mechanism 2 to complete the U-shaped groove cutting; The clamping and positioning mechanism 3 includes a moving component 31, a clamping component 32, a top material block limiting component 33, and a positioning component 34; the rotary grooving mechanism 2 and the clamping component 32 are both connected to the moving component 31; the clamping component 32 is connected to the top material block limiting component 33; the top material block limiting component 33 and the positioning component 34 are both connected to the rotary grooving mechanism 2; the moving component 31 is used to drive the clamping component 32 and the pipe to move back and forth; the clamping component 32 is used to fix the position of the pipe; the top material block limiting component 33 is used to limit the clamping component 32; and the positioning component 34 is used to position the pipe after grooving.

[0022] In this invention, after the operator passes the pipe through the pipe bending machine 4, the clamping assembly 32 is used to fix the pipe. Then, the rotating grooving mechanism 2 cuts a U-shaped groove at the upper rear end of the pipe. After cutting, the moving assembly 31 drives the clamping assembly 32 and the pipe together to move backward under the limit of the top material block limiting assembly 33. Then, the positioning assembly 34 positions the pipe through the cut U-shaped groove. The rotating grooving mechanism 2 drives the pipe to rotate and flip. After rotation, the rotating grooving mechanism 2 cuts another U-shaped groove on the symmetrical side of the cross-section of the pipe. Then, the positioning assembly 34 positions and fixes the pipe through the two U-shaped grooves to prevent the pipe from rotating relative to the clamping equipment during bending. Then, the linear module 5 drives the pipe to move, and at the same time, the pipe bending machine 4 bends the pipe.

[0023] Example 2: In some embodiments, such as Figures 1-6 As shown, in a preferred embodiment of the present invention, the moving component 31 includes a first push cylinder 311 and a moving plate 312; the first push cylinder 311 is connected to the rotary grooving mechanism 2; the driving end of the first push cylinder 311 is fixedly connected to the moving plate 312; the moving plate 312 is connected to the clamping component 32. The clamping assembly 32 includes an electric gripper 321 and a top material block 322; both the electric gripper 321 and the top material block 322 are fixedly connected to the moving plate 312; the top material block 322 is connected to the top material block limiting assembly 33. The top material block limiting assembly 33 includes a limiting rod 331; multiple limiting rods 331 are fixedly connected to the top material block 322; the limiting rods 331 are connected to the rotary grooving mechanism 2; The positioning component 34 includes a second push cylinder 341 and an arc-shaped positioning block 342; the second push cylinder 341 is connected to the rotary grooving mechanism 2; the driving end of the second push cylinder 341 is fixedly connected to the arc-shaped positioning block 342. In this invention, after the operator abuts the rear end of the pipe fitting against the top material block 322, the electric gripper 321 clamps and fixes the pipe fitting. Then, the rotating grooving mechanism 2 cuts a U-shaped groove at the upper rear end of the pipe fitting. After cutting, the first push cylinder 311 drives the electric gripper 321 and the top material block 322 to move backward simultaneously through the moving plate 312, so that the U-shaped groove of the pipe fitting is aligned with the lower end of the arc-shaped positioning block 342. Then, the second push cylinder 341 drives the arc-shaped positioning block 342 to move downward. The arc-shaped positioning block 342 slides into the U-shaped groove to fix the position of the pipe fitting. Subsequently, the rotating grooving mechanism 2 drives the pipe fitting to rotate and flip by 180°, so that the symmetrical side is easy to groove. After rotation, the rotating grooving mechanism 2 opens a U-shaped groove again on the symmetrical side of the cross-section of the pipe fitting. Then, the second push cylinder 341 drives the arc-shaped positioning block 342 to move and slide into the U-shaped groove to fix the position of the pipe fitting.

[0024] The rotary grooving mechanism 2 includes a rotary component 21 and a laser cutting component 22; the rotary component 21 is connected to the drive end of the linear module 5; the laser cutting component 22 is connected to the base 1; the first push cylinder 311, the limit rod 331, and the second push cylinder 341 are all connected to the rotary component 21; the rotary component 21 is used to drive the pipe to rotate, and the laser cutting component 22 is used to open a U-shaped groove on the pipe.

[0025] The rotating assembly 21 includes a servo motor 211, a rotating disk 212, and an L-shaped plate 213; the servo motor 211 is fixedly connected to the L-shaped plate 213; the drive end of the servo motor 211 is fixedly connected to the rotating disk 212; the rotating disk 212 is rotatably connected to the L-shaped plate 213; the L-shaped plate 213 is fixedly connected to the drive end of the linear module 5; the first push cylinder 311, the limit rod 331, and the second push cylinder 341 are all fixedly connected to the rotating disk 212. The laser cutting assembly 22 includes a multi-axis robotic arm 221 and a laser cutting head 222; the lower end of the multi-axis robotic arm 221 is fixedly connected to the base 1; the drive end of the multi-axis robotic arm 221 is fixedly connected to the laser cutting head 222. In this invention, after the operator abuts the rear end of the pipe fitting against the top material block 322, the electric gripper 321 clamps and fixes the pipe fitting. Then, the multi-axis robotic arm 221 drives the laser cutting head 222 to cut a U-shaped groove on the upper rear end of the pipe fitting. After cutting, the first push cylinder 311 drives the electric gripper 321 and the top material block 322 to move backward simultaneously through the moving plate 312, so that the U-shaped groove of the pipe fitting is aligned with the lower end of the arc-shaped positioning block 342. Then, the second push cylinder 341 drives the arc-shaped positioning block 342 to move downward. The arc-shaped positioning block 342 slides into the U-shaped groove to fix the position of the pipe fitting. Then, the servo motor 211 drives the pipe fitting to rotate and flip through the rotating disk 212. After rotation, the multi-axis robotic arm 221 drives the laser cutting head 222 to cut a U-shaped groove again on the symmetrical side of the cross-section of the pipe fitting.

[0026] Example 3: In some embodiments, such as Figures 1-6 As shown, in a preferred embodiment of the present invention, a positioning method for a pipe bending positioning device includes the following steps: Step 1: After the operator passes the pipe through the pipe bending machine 4, the clamping assembly 32 is used to fix the pipe in place; Step 2: Then, rotate the grooving mechanism 2 to cut a U-shaped groove at the upper rear end of the pipe fitting; Step 3: After cutting, the moving component 31 drives the clamping component 32 and the pipe to move backward together under the limitation of the top material block limiting component 33; Step 4: Positioning component 34 positions the pipe fitting through the cut U-shaped groove; Step 5: The rotary grooving mechanism 2 drives the pipe fitting to rotate and flip. After rotation, the rotary grooving mechanism 2 will create a U-shaped groove again on the symmetrical side of the cross-section of the pipe fitting after the first U-shaped groove is cut. Step 6: Positioning component 34 positions and fixes the pipe fitting through two U-shaped grooves to prevent the pipe fitting from rotating relative to the clamping device when bending the pipe; Step 7: The linear module 5 moves the pipe fitting, while the pipe bending machine 4 bends the pipe fitting.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe bending positioning device, comprising a base (1), a pipe bending machine (4), and a straight module (5), characterized in that: It also includes a rotary grooving mechanism (2) and a clamping and positioning mechanism (3); Both the pipe bending machine (4) and the straight module (5) are fixedly connected to the base (1); The linear module (5) is equipped with a rotary grooving mechanism (2) for automatically rotary cutting U-shaped grooves for feeding pipe fittings; The rotary grooving mechanism (2) is equipped with a clamping and positioning mechanism (3), which is used to automatically rotate and position the pipe fittings and cooperate with the rotary grooving mechanism (2) to complete the U-shaped groove cutting; The clamping and positioning mechanism (3) includes a moving component (31), a clamping component (32), a top material block limiting component (33), and a positioning component (34); the rotary grooving mechanism (2) and the clamping component (32) are both connected to the moving component (31); the clamping component (32) is connected to the top material block limiting component (33); the top material block limiting component (33) and the positioning component (34) are both connected to the rotary grooving mechanism (2); the moving component (31) is used to drive the clamping component (32) and the pipe to move back and forth; the clamping component (32) is used to fix the position of the pipe; the top material block limiting component (33) is used to limit the clamping component (32); the positioning component (34) is used to position the pipe after grooving.

2. The pipe bending positioning device according to claim 1, characterized in that, The moving component (31) includes a first push cylinder (311) and a moving plate (312); the first push cylinder (311) is connected to the rotary grooving mechanism (2); the driving end of the first push cylinder (311) is fixedly connected to the moving plate (312); the moving plate (312) is connected to the clamping component (32).

3. The pipe bending positioning device according to claim 2, characterized in that, The clamping assembly (32) includes an electric gripper (321) and a top material block (322); both the electric gripper (321) and the top material block (322) are fixedly connected to the moving plate (312); the top material block (322) is connected to the top material block limiting assembly (33).

4. The pipe bending positioning device according to claim 3, characterized in that, The top material block limiting assembly (33) includes a limiting rod (331); multiple limiting rods (331) are fixedly connected to the top material block (322); the limiting rods (331) are connected to the rotary grooving mechanism (2).

5. The pipe bending positioning device according to claim 4, characterized in that, The positioning component (34) includes a second push cylinder (341) and an arc-shaped positioning block (342); the second push cylinder (341) is connected to the rotary grooving mechanism (2); the driving end of the second push cylinder (341) is fixedly connected to the arc-shaped positioning block (342).

6. The pipe bending positioning device according to claim 5, characterized in that, The rotary grooving mechanism (2) includes a rotary assembly (21) and a laser cutting assembly (22); the rotary assembly (21) is connected to the drive end of the linear module (5); the laser cutting assembly (22) is connected to the base (1); the first push cylinder (311), the limit rod (331) and the second push cylinder (341) are all connected to the rotary assembly (21); the rotary assembly (21) is used to drive the pipe to rotate, and the laser cutting assembly (22) is used to open a U-shaped groove on the pipe.

7. The pipe bending positioning device according to claim 6, characterized in that, The rotating assembly (21) includes a servo motor (211), a rotating disk (212), and an L-shaped plate (213); the servo motor (211) is fixedly connected to the L-shaped plate (213); the driving end of the servo motor (211) is fixedly connected to the rotating disk (212); the rotating disk (212) is rotatably connected to the L-shaped plate (213); the L-shaped plate (213) is fixedly connected to the driving end of the linear module (5); the first push cylinder (311), the limit rod (331), and the second push cylinder (341) are all fixedly connected to the rotating disk (212).

8. The pipe bending positioning device according to claim 7, characterized in that, The laser cutting assembly (22) includes a multi-axis robotic arm (221) and a laser cutting head (222); the lower end of the multi-axis robotic arm (221) is fixedly connected to the base (1); the drive end of the multi-axis robotic arm (221) is fixedly connected to the laser cutting head (222).

9. A positioning method for a pipe bending positioning device, utilizing the pipe bending positioning device as described in claim 8, characterized in that, Includes the following steps: Step 1: After the operator passes the pipe through the pipe bending machine (4), the clamping assembly (32) is used to fix the pipe. Step 2: Then rotate the grooving mechanism (2) to cut a U-shaped groove at the upper rear end of the pipe fitting; Step 3: After cutting, the moving component (31) drives the clamping component (32) and the pipe to move backward together under the limit of the top material block limiting component (33); Step 4: The positioning component (34) positions the pipe fitting through the cut U-shaped groove; Step 5: The rotary grooving mechanism (2) drives the pipe to rotate and flip. After rotation, the rotary grooving mechanism (2) opens a U-shaped groove again on the symmetrical side of the cross-section of the pipe after the first U-shaped groove is cut. Step 6: The positioning component (34) positions and fixes the pipe fitting through two U-shaped grooves to prevent the pipe fitting from rotating relative to the clamping device when bending the pipe; Step 7: The linear module (5) moves the pipe fitting, while the pipe bending machine (4) bends the pipe fitting.

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