An automatic pipe bender

Abstract

An automatic pipe bending machine allows the pipe to be bent automatically when the distance between the positioning frames of the movable and fixed frames is equal to the length of the pipe to be bent. The pipe placed between the two positioning frames will fall into the positioning slots of both frames. The bending mechanism then bends the pipe in the positioning slots. After bending, the clamping mechanism automatically releases, and the pipe is removed. When bending pipes of different lengths, the distance between the two positioning frames can be adjusted to ensure the bending point is at the bend. When a pipe is placed between the two positioning frames, it automatically falls into the positioning slot, is clamped, and then bent. This machine is convenient, efficient, and easy to maintain. It eliminates the need for hydraulic telescopic positioning, reducing the number of mechanisms required and lowering energy consumption and maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel pipe bending production equipment, specifically an automatic pipe bending machine. Background Technology

[0002] For example, when installing stainless steel water pipes, elbows are needed at corners, which are bent stainless steel pipe connectors. In the process of processing stainless steel pipes into elbows, straight pipes need to be bent into bends with angles. This requires pipe bending equipment to bend the straight stainless steel pipes to form the required elbows or other curved products. The existing patent publication number CN214768039U discloses a fully automatic pipe bending machine. It uses grippers to hold the pipe and then the extension rod of a first hydraulic cylinder extends to push the pipe to a specific position in a positioning groove for positioning. That is, the bending and positioning of steel pipes of different lengths is achieved by extending the extension rod of the first hydraulic cylinder, followed by automatic bending. This equipment requires the grippers and the first hydraulic cylinder to work together to position the pipe. It is not convenient to use, and the mechanism is complex. It requires both a first and a second hydraulic cylinder to extend and push the bent pipe out of the positioning groove, making the structure relatively complex. It uses multiple hydraulic mechanisms, resulting in increased energy consumption and relatively high manufacturing, maintenance, and pipe bending production costs, presenting certain inconveniences. Summary of the Invention

[0003] To address the shortcomings of existing fully automatic pipe bending machines, which require the coordinated operation of a clamping claw and a first hydraulic telescopic cylinder for pipe pushing, resulting in complex mechanisms, high maintenance costs, and high energy consumption, this invention provides an automatic pipe bending machine. This machine features two adjustable positioning frames that work in conjunction with a steel pipe positioning groove to position the pipe. The bending mechanism then clamps and bends the pipe. After bending, the clamping mechanism automatically releases, allowing the pipe to be removed. When bending pipes of different lengths, the distance between the two positioning frames can be adjusted to ensure the bending point is precisely positioned. When a pipe is placed between the two positioning frames, it automatically falls into the positioning groove for accurate positioning before being clamped and bent. This method is convenient, efficient, and easy to maintain. It eliminates the need for hydraulic telescopic positioning, reducing the number of mechanisms required and lowering energy consumption and maintenance costs.

[0004] The technical solution adopted by this utility model to solve the technical problem is: an automatic pipe bending machine, including a pipe bending mechanism, a main frame, a fixed frame, a movable frame, and a positioning frame. The main frame is provided with a fixed frame and a drive motor. The rotating shaft of the drive motor is connected to the movable frame and the fixed frame. The upper end of the fixed frame is provided with a pipe positioning groove, and the right end is provided with an adjustable positioning frame. The upper end of the movable frame is provided with a pipe positioning groove, and the left end is provided with an adjustable positioning frame. When the distance between the two positioning frames on the movable frame and the fixed frame is adjusted to be equal to the length of the pipe to be bent, the pipe placed between the two positioning frames can fall into the pipe positioning groove of the fixed frame and the movable frame for positioning. The pipe bending mechanism can bend the pipe in the pipe positioning groove of the fixed frame and the movable frame.

[0005] The positioning frame includes a guide rail, a slider frame, and a guide part. The slider frame is installed in the guide rail, and the upper end of the slider frame is provided with a guide part. The guide part is tilted outward and opens to form an expanded opening, constituting a guide opening.

[0006] The right end of the fixed frame is provided with a guide rail that cooperates with the slider frame. The slider frame can slide and adjust its position or lock and fix it in the guide rail.

[0007] The left end of the movable frame is provided with a guide rail that cooperates with the slider frame. The slider frame can slide and adjust its position or lock and fix it in the guide rail.

[0008] The guide portion at the right end of the fixed frame is mirror-aligned with the guide portion at the left end of the movable frame, allowing the pipe fitting placed between the two guide portions to automatically fall into the pipe fitting positioning slots of the fixed and movable frames. This facilitates pipe fitting placement and positioning, eliminating the need for hydraulic telescopic devices and reducing the number of mechanisms required in the equipment.

[0009] The guide rails of the fixed frame and the movable frame are provided with dimensional values. When adjusting the distance of the slider frame, the slider frame can be easily moved to the corresponding dimensional value position, and the distance between the two slider frames can be calculated.

[0010] The upper end of the main frame is provided with a first hydraulic telescopic cylinder, and the lower end of the telescopic rod of the first hydraulic telescopic cylinder is provided with a first pressing pipe part. The lower end of the first pressing pipe part is provided with a pipe positioning groove that is aligned with the pipe positioning groove at the upper end of the fixed frame.

[0011] The first hydraulic telescopic cylinder can control the first pressing section to move downwards and clamp and fix the pipe in the pipe positioning groove placed on the upper end of the fixed frame.

[0012] The pipe bending mechanism includes a second hydraulic telescopic cylinder, a drive motor, and a rotating frame. The drive motor is connected and fixed to the fixed frame. The rotating shaft of the drive motor can control the rotation of the movable frame and the rotating frame. The rotation of the rotating frame drives the second hydraulic telescopic cylinder and the second pressing pipe section to rotate.

[0013] One end of the fixed frame is provided with a through hole that aligns with the shaft hole of the movable frame. The shaft of the drive motor passes through the through hole of the fixed frame and the shaft hole of the movable frame, connecting the fixed frame and the movable frame as one unit. The rotation of the shaft of the drive motor controls the rotation of the movable frame.

[0014] The drive motor shaft is fixedly connected to the rotating frame. A second hydraulic telescopic cylinder is provided on the rotating frame. A second pressing pipe part is provided at the lower end of the telescopic rod of the second hydraulic telescopic cylinder. A pipe positioning groove is provided at the lower end of the second pressing pipe part, which is aligned with the pipe positioning groove at the upper end of the movable frame.

[0015] The second hydraulic telescopic cylinder controls the second pressing section to move downwards and clamp and position the pipe fittings placed in the pipe fitting positioning slot at the upper end of the movable frame. When the drive motor starts, the rotating shaft controls the rotating frame, movable frame, second hydraulic telescopic cylinder, and second pressing section to rotate, bending the clamped pipe fittings.

[0016] The beneficial effects of this utility model are as follows: An automatic pipe bending machine, where the distance between the positioning frames of the movable and fixed frames is equal to the length of the pipe to be bent, allows the pipe placed between the two positioning frames to fall into the positioning slots of the fixed and movable frames for positioning. The bending mechanism can bend the pipe in the positioning slots of the fixed and movable frames. After bending, the clamping mechanism is automatically released, and the pipe is removed. When bending pipes of different lengths, the distance between the two positioning frames can be adjusted so that the part to be bent is at the bending point. When the pipe is placed between the two positioning frames, it automatically falls into the positioning slot for precise positioning, and then the pipe is clamped and bent. It is convenient, efficient, and easy to maintain. The absence of hydraulic telescopic equipment for positioning reduces the application of mechanisms in the equipment, lowers energy consumption and maintenance costs, and ensures stable performance. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 3D view of an automatic pipe bending machine; Figure 2 Exploded view of an automatic pipe bending machine; Figure 3 A view of the pipe clamping state of the automatic pipe bending machine; Figure 4 A view of the status of the pipe bending components on an automatic pipe bending machine; In the diagram: 1. Support frame, 2. Main frame, 3. Fixed frame, 4. Movable frame, 5. First hydraulic telescopic cylinder, 6. First pressing pipe section, 7. Rotating frame, 8. Second hydraulic telescopic cylinder, 9. Drive motor, 10. Rotating shaft, 11. Guide rail, 12. Slider frame, 13. Guide section, 14. Dimensional value, 15. Pipe positioning groove, 16. Pipe, 17. Second pressing pipe section, 18. Piston section, 19. Top block, 20. Spring. Detailed Implementation

[0019] exist Figure 1-4 In the illustrated embodiment, an automatic pipe bending machine has a main frame 2 equipped with a fixed frame 3 and a drive motor 9. The rotating shaft of the drive motor 9 connects a movable frame 4 and the fixed frame 3, enabling control of the rotation of the movable frame 4. The upper end of the fixed frame 3 is provided with a pipe positioning groove 15, and the right end of the fixed frame 3 is provided with an adjustable positioning frame. The upper end of the movable frame 4 is provided with a pipe positioning groove 15, and the left end of the movable frame 4 is provided with an adjustable positioning frame. When the distance between the positioning frames of the movable frame 4 and the fixed frame 3 is adjusted to be equal to the length of the pipe to be bent, the pipe placed between the two positioning frames can fall into the pipe positioning groove 15 of the fixed frame 3 and the movable frame 4, completing the placement and positioning of the pipe 16. The pipe bending mechanism can bend the pipe in the pipe positioning groove 15 of the fixed frame 3 and the movable frame 4.

[0020] The positioning frame includes a guide rail 11, a slider frame 12, and a guide part 13. The slider frame 12 is installed in the guide rail 11, and the upper end of the slider frame 12 is provided with a guide part 13. The guide part 13 is tilted outward and opens to form an expanded opening, constituting a guide opening.

[0021] The right end of the fixed frame 3 is provided with a guide rail 11 that cooperates with the slider frame 12. The slider frame 12 can slide and adjust its position or lock and fix it in the guide rail 11.

[0022] The left end of the movable frame 4 is provided with a guide rail 11 that cooperates with the slider frame 12. The slider frame 12 can slide and adjust its position or lock and fix it in the guide rail 11.

[0023] The guide portion 13 at the right end of the fixed frame 3 is mirror-aligned with the guide portion 13 at the left end of the movable frame 4, so that the pipe fitting 16 placed between the two guide portions 13 can be automatically guided and fall into the pipe fitting positioning groove 15 of the fixed frame 3 and the movable frame 4. This makes it convenient to place the pipe fitting 16 and easy to position it, eliminating the need for hydraulic telescopic equipment for positioning and reducing the application of mechanisms in the equipment.

[0024] Yes, but not limited to, the guide rails 11 of the fixed frame and the movable frame are provided with dimension values ​​14. When adjusting the distance of the slider frame 12, the slider frame 12 can be easily moved to the corresponding dimension value 14 position, and the distance between the two slider frames 12 can be calculated.

[0025] The upper end of the main frame 2 is provided with a first hydraulic telescopic cylinder 5. The lower end of the telescopic rod of the first hydraulic telescopic cylinder 5 is provided with a first pressing pipe part 6. The lower end of the first pressing pipe part 6 is provided with a pipe positioning groove 15, which is aligned with the pipe positioning groove 15 at the upper end of the fixed frame 3. The first hydraulic telescopic cylinder 5 can control the first pressing pipe part 6 to move downward to clamp and fix the pipe placed in the pipe positioning groove 15 at the upper end of the fixed frame 3.

[0026] The pipe bending mechanism includes a second hydraulic telescopic cylinder 8, a drive motor 9, and a rotating frame 7. The drive motor 9 is connected and fixed to the fixed frame 3. The rotating shaft of the drive motor 9 can control the rotation of the movable frame 4 and the rotating frame 7. The rotation of the rotating frame 7 drives the second hydraulic telescopic cylinder 8 and the second pressing pipe part 17 to rotate, thereby bending the clamped pipe 16.

[0027] One end of the fixed frame 3 is provided with a through hole that aligns with the shaft hole of the movable frame 4. The rotating shaft 10 of the drive motor 9 passes through the through hole of the fixed frame 3 and the shaft hole of the movable frame 4, connecting the fixed frame 3 and the movable frame 4 into one unit. The rotation of the rotating shaft 10 of the drive motor 9 controls the rotation of the movable frame 4.

[0028] The drive motor 9's rotating shaft 10 is fixedly connected to the rotating frame 7. A second hydraulic telescopic cylinder 8 is mounted on the rotating frame 7. A second pressing section 17 is located at the lower end of the telescopic rod of the second hydraulic telescopic cylinder 8. A pipe positioning groove 15 is located at the lower end of the second pressing section 17, aligning with the pipe positioning groove 15 at the upper end of the movable frame 4. The second hydraulic telescopic cylinder 8 controls the downward movement of the second pressing section 17 to clamp and position the pipe 16 placed in the pipe positioning groove 15 at the upper end of the movable frame 4. When the drive motor 9 starts, the rotating shaft 10 controls the rotation of the rotating frame 7, the movable frame 4, the second hydraulic telescopic cylinder 8, and the second pressing section 17, causing the pipe 16 clamped by the second pressing section 17 and the movable frame 4 to bend.

[0029] exist Figure 3-4In the illustrated embodiment, when the distance between the slider bracket 12 of the right guide rail 11 of the fixed frame 3 and the slider bracket 12 of the left guide rail 11 of the movable frame 4 is adjusted to be equal to the straightened length of the pipe fitting 16 to be bent, the locking screws on the two slider brackets 12 are tightened, and the pipe fitting 16 is placed between the two guide parts 13. The pipe fitting 16 can then be automatically guided and fall into the pipe fitting positioning groove 15 of the fixed frame 3 and the movable frame 4. Then, the first hydraulic telescopic cylinder 5 and the second hydraulic telescopic cylinder 8 are activated. The first hydraulic telescopic cylinder 5 controls the first pressing pipe part 6 to move downward to clamp and fix the pipe fitting 16 placed in the pipe fitting positioning groove 15 at the upper end of the fixed frame 3. The second hydraulic telescopic cylinder 8 controls the second pressing pipe part 17 to move downward to clamp and fix the pipe fitting 16 placed in the pipe fitting positioning groove 15 at the upper end of the fixed frame 3. The pipe 16 is clamped and positioned in the pipe positioning groove 15 at the upper end of the moving frame 4. When the drive motor 9 is started, the rotating shaft 10 of the drive motor 9 controls the rotation of the rotating frame 7, the moving frame 4, the second hydraulic telescopic cylinder 8, and the second pressing part 17. The pipe 16, clamped by the second pressing part 17 and the moving frame 4, is bent. After the pipe 16 is bent to the required angle, the drive motor 9 stops working. Then, the telescopic rods of the first hydraulic telescopic cylinder 5 and the second hydraulic telescopic cylinder 8 retract, and the first pressing part 6 and the second pressing part 17 release. The worker can manually remove the bent pipe 16. Finally, the drive motor 9 is controlled to rotate in the reverse direction to reset, completing the bending and removal of the pipe 16. The placement of the pipe is easy, and the bending can be performed automatically. The drive motor 9, the first hydraulic telescopic cylinder 5, and the second hydraulic telescopic cylinder 8 can be connected to the control module, which automatically controls the working state of the drive motor 9, the first hydraulic telescopic cylinder 5, and the second hydraulic telescopic cylinder 8 to perform automatic pipe bending.

Claims

1. An automatic pipe bending machine, comprising a pipe bending mechanism, a main frame, a fixed frame, a movable frame, and a positioning frame, characterized in that: The main frame is equipped with a fixed frame and a drive motor. The drive motor's shaft connects the movable frame and the fixed frame. The fixed frame has a pipe positioning groove at its upper end and an adjustable positioning frame at its right end. The movable frame has a pipe positioning groove at its upper end and an adjustable positioning frame at its left end. The distance between the two positioning frames on the movable and fixed frames is adjusted to equal the length of the pipe to be bent. The pipe placed between the two positioning frames will fall into the pipe positioning grooves of the fixed and movable frames and be positioned there. The pipe bending mechanism can bend the pipe in the pipe positioning grooves of the fixed and movable frames.

2. The automatic pipe bending machine according to claim 1, characterized in that: The positioning frame includes a guide rail, a slider frame, and a guide part. The slider frame is installed in the guide rail, and a guide part is provided at the upper end of the slider frame. The guide part is tilted outward and opens to form an expanded opening.

3. An automatic pipe bending machine according to claim 1 or 2, characterized in that: The right end of the fixed frame is provided with a guide rail that cooperates with the slider frame, and the left end of the movable frame is provided with a guide rail that cooperates with the slider frame.

4. An automatic pipe bending machine according to claim 3, characterized in that: The guide portion at the right end of the fixed frame is mirror-aligned with the guide portion at the left end of the movable frame.

5. An automatic pipe bending machine according to claim 4, characterized in that: The guide rails of the fixed frame and the movable frame are provided with dimensional values.

6. An automatic pipe bending machine according to claim 4, characterized in that: The upper end of the main frame is provided with a first hydraulic telescopic cylinder. The lower end of the telescopic rod of the first hydraulic telescopic cylinder is provided with a first pressing pipe part. The lower end of the first pressing pipe part is provided with a pipe positioning groove that is aligned with the pipe positioning groove at the upper end of the fixed frame. The first pressing pipe part moves downward to clamp and fix the pipe placed in the pipe positioning groove at the upper end of the fixed frame.

7. An automatic pipe bending machine according to claim 6, characterized in that: The pipe bending mechanism includes a second hydraulic telescopic cylinder, a drive motor, and a rotating frame. The drive motor is connected and fixed to the fixed frame. The rotating shaft of the drive motor can control the rotation of the movable frame and the rotating frame. The rotation of the rotating frame drives the second hydraulic telescopic cylinder and the second pressing pipe section to rotate.

8. An automatic pipe bending machine according to claim 7, characterized in that: One end of the fixed frame is provided with a through hole that aligns with the shaft hole of the movable frame. The shaft of the drive motor passes through the through hole of the fixed frame and the shaft hole of the movable frame, connecting the fixed frame and the movable frame as one unit. The rotation of the shaft of the drive motor controls the rotation of the movable frame.

9. An automatic pipe bending machine according to claim 8, characterized in that: The drive motor shaft is fixedly connected to the rotating frame. A second hydraulic telescopic cylinder is provided on the rotating frame. A second pressing part is provided at the lower end of the telescopic rod of the second hydraulic telescopic cylinder. A pipe positioning groove is provided at the lower end of the second pressing part, which is aligned with the pipe positioning groove at the upper end of the movable frame. The second pressing part moves downward to clamp and position the pipe placed in the pipe positioning groove at the upper end of the movable frame.

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