A pipe bender

Abstract

The utility model discloses a pipe bender relates to pipe bender technical field, including pipe bending workstation, is seted up in the pipe bending workstation and receives the groove, the hydraulic cylinder that is connected with the internal hydraulic work station of pipe bending workstation is fixedly installed in the receiving groove, the connecting end of hydraulic cylinder is fixedly installed with wheel disc, the lateral wall surface of the inside pipe bending workstation is fixedly installed with two limit supports, and two limit supports are rotated and are connected respectively through the locating shaft and top wheel, the cylinder workstation is fixedly installed in the pipe bending workstation, and the feeding structure for continuously conveying pipe body is fixedly installed on the cylinder workstation, the utility model discloses the circulation cooperation logic of two groups of feeding frame, ensures that pipe body can accurate delivery to the pipe bending position, and can quick link the next feeding after pipe bending, improves the overall operation efficiency, solves the problem that the pipe bending mode of single clamping of the pipe bender of existing pipe bender can not realize continuous pipe bending operation, and the efficiency is lower.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending machine technology, specifically a pipe bending machine. Background Technology

[0002] A pipe bending machine is a specialized piece of equipment used to process metal pipes (such as steel, copper, and aluminum pipes) into specific bending angles (such as 90°, 180°) or arc shapes. It is widely used in pipeline engineering, automobile manufacturing, aerospace, furniture production, and other fields. Its core function is to achieve precise shaping without damaging the structural integrity of the pipe. Its core structure includes the machine body, clamping mechanism, bending die, and drive system. Based on the drive method, it can be divided into hydraulic, electric, and manual types. During operation, the clamping mechanism fixes the pipe, and the drive system drives the bending die to rotate, causing the pipe to bend along the die's trajectory. By adjusting the die specifications and rotation angle, it can adapt to different pipe diameters (typically 6-200mm) and bending requirements. Some CNC pipe bending machines also integrate programming functions, enabling automatic completion of multi-segment continuous bending with an accuracy of ±0.1°. The machine body is mostly made of cast iron or steel, and the die is made of wear-resistant alloy material to ensure processing stability. This device significantly improves the efficiency and accuracy of pipe bending, avoiding the deformation and cracking problems of manual bending, making it a key piece of equipment in the pipe processing stage. For example, utility model patent CN104841738A discloses a pipe bending machine, which includes a pipe conveying mechanism, a heater, and a pipe bending mechanism arranged sequentially from left to right on a machine base. The pipe conveying mechanism includes a stepper motor and a guide wheel. The heater is located between the pipe conveying mechanism and the pipe bending mechanism. The pipe bending mechanism includes a pressure roller and a power mechanism. The pressure roller has a circumferential groove for matching the pipe fitting. In this invention, because a heater is provided between the pipe conveying mechanism and the pipe bending mechanism, the pipe fitting is heated before bending, which can reduce the damage to the pipe fitting during the bending process. However, this utility model requires manual feeding each time, which is cumbersome to operate. Furthermore, since it uses a single-clamp bending mode, it cannot achieve continuous bending operations, resulting in low efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a pipe bending machine that solves the technical problems of existing devices requiring manual feeding each time, which is cumbersome to operate, and the inability to achieve continuous pipe bending operations due to the use of a single-pipe clamping bending mode, resulting in low efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pipe bending machine includes a pipe bending worktable. A receiving groove is provided inside the pipe bending worktable. A hydraulic cylinder connected to a hydraulic workstation inside the pipe bending worktable is fixedly installed inside the receiving groove. A wheel is fixedly installed at the connecting end of the hydraulic cylinder. Two limiting frames are fixedly installed on the side wall inside the pipe bending worktable. The two limiting frames are rotatably connected to a top wheel via a positioning shaft. A cylinder worktable is fixedly installed inside the pipe bending worktable. A useful... A feeding structure for continuously conveying bent pipe bodies; the feeding structure includes: a first feeding frame and a second feeding frame, the first feeding frame and the second feeding frame being fixedly installed on the cylinder extension end of the cylinder workbench, two sets of telescopic rods being fixedly installed on the upper wall of the first feeding frame and the second feeding frame, and receiving blocks being fixedly installed on the upper wall of the two sets of telescopic rods; a first material box support frame is also fixedly installed on the upper wall of the bending pipe workbench, and a feeding structure for conveying bent pipe bodies to the feeding structure is inserted into the first material box support frame.

[0005] Preferably, the feeding structure includes: a bent pipe feeding box and two load-bearing plates. A feeding box limiting rod is fixedly installed on the lower wall of the two load-bearing plates. A bent pipe limiting block is telescopically connected to the discharge port of the bent pipe feeding box. A plurality of bent pipe bodies are arranged and stored in the feeding box and are limited by the bent pipe limiting block.

[0006] Preferably, a positioning pin is fixedly installed inside the first material box support frame to limit the position of the bent pipe body at the outlet of the bent pipe feeding box.

[0007] Preferably, a second material box support frame for supporting the spare bent pipe unloading box is fixedly installed on the upper wall of the bending workbench.

[0008] Preferably, the two limiting frames have rounded chamfers at positions opposite to the positioning shaft to serve as guides.

[0009] Preferably, the minimum stroke of the two sets of telescopic rods causing the receiving blocks to retract so that the two receiving blocks are located below the two limiting frames.

[0010] Beneficial effects This utility model provides a pipe bending machine, which has the following beneficial effects: By using the bending tube feeding box in the first and second material box support frames in a cycle, and in conjunction with the extension and retraction of the bending tube limit block and the positioning pin, automatic feeding is achieved, and continuous operation is completed. This solves the problem that existing bending tube machines require manual feeding each time, which is quite troublesome to operate. By using two sets of feeding racks in a cyclical manner, the bending tube body can be accurately conveyed to the bending position, and the next feeding can be quickly connected after the bending is completed, which improves the overall operation efficiency and solves the problem that the existing bending machine with single clamping bending mode cannot achieve continuous bending operation and has low efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the wheel structure of this utility model; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a schematic diagram of the material feeding structure of this utility model; Figure 5 This is a schematic diagram of the feeding structure of this utility model.

[0012] In the diagram: 1. Bending workbench; 2. Storage slot; 3. Hydraulic cylinder; 4. Wheel; 5. Limiting frame; 6. Positioning shaft; 7. Top wheel; 8. Cylinder workbench; 9. Bending body; 10. First feeding frame; 11. Second feeding frame; 12. Telescopic rod; 13. Receiving block; 14. First material box support frame; 15. Bending unloading box; 16. Load-bearing plate; 17. Material box limiting rod; 18. Bending limit block; 19. Positioning pin; 20. Second material box support frame; 24. Rounded chamfer. Detailed Implementation

[0013] Please see Figures 1-5 A pipe bending machine includes a pipe bending worktable 1, a receiving groove 2 inside the pipe bending worktable 1, a hydraulic cylinder 3 fixedly installed in the receiving groove 2 and connected to a hydraulic workstation inside the pipe bending worktable 1, a wheel 4 fixedly installed at the connecting end of the hydraulic cylinder 3, two limit frames 5 fixedly installed on the side wall inside the pipe bending worktable 1, the two limit frames 5 being rotatably connected to a top wheel 7 via a positioning shaft 6, and a cylinder worktable 8 fixedly installed inside the pipe bending worktable 1, on which a feeding structure for continuously conveying the bent pipe body 9 is fixedly installed; the feeding... The structure includes: a first feeding frame 10 and a second feeding frame 11, the first feeding frame 10 and the second feeding frame 11 are respectively fixedly installed on the cylinder telescopic end on the cylinder workbench 8, two sets of telescopic rods 12 are respectively fixedly installed on the upper wall of the first feeding frame 10 and the second feeding frame 11, and receiving blocks 13 are respectively fixedly installed on the upper wall of the two sets of telescopic rods 12; a first material box support frame 14 is also fixedly installed on the upper wall of the bending workbench 1, and a feeding structure for conveying the bent pipe body 9 to the feeding structure is inserted into the first material box support frame 14.

[0014] Please see Figure 5The feeding structure includes: a bent pipe feeding box 15 and two load-bearing plates 16. A material box limiting rod 17 is fixedly installed on the lower wall of the two load-bearing plates 16. A bent pipe limiting block 18 is telescopically connected to the outlet of the bent pipe feeding box 15. The bent pipe limiting block 18 is driven by an electric push rod or a cylinder. Several bent pipe bodies 9 are arranged and stored in the bent pipe feeding box 15 and are limited by the bent pipe limiting block 18.

[0015] Please see Figure 2 The first material box support frame 14 is fixedly installed with a positioning pin 19 for limiting the position of the bent pipe body 9 at the outlet of the bent pipe feeding box 15.

[0016] Please see Figure 2 A second material box support frame 20 for supporting the spare bent pipe unloading box 15 is fixedly installed on the upper wall of the pipe bending workbench 1.

[0017] Please see Figure 3 The two limit frames 5 have rounded chamfers 24 at positions opposite to the positioning shaft 6 to serve as guides.

[0018] Please see Figure 1 The minimum stroke of the two sets of telescopic rods 12 causes the receiving blocks 13 to retract, so that the two receiving blocks 13 are located below the two limit frames 5.

[0019] Example 1: In this example, the bending tube feeding box 15 is used cyclically with the first material box support frame 14 and the second material box support frame 20, in conjunction with the bending tube limiting block 18 and the positioning pin 19 to achieve automatic feeding and complete continuous operation.

[0020] Specifically, during material preparation, the operator first activates the bending pipe limiting block 18 at the outlet of the bending pipe feeding box 15, controlling the bending pipe limiting block 18 to extend from inside the bending pipe feeding box 15. At this time, the bending pipe limiting block 18 can block and limit the bending pipe body 9 that is subsequently placed in. Then, take several bending pipe bodies 9 and place them neatly inside the bending pipe feeding box 15 in sequence. The several bending pipe bodies 9 are arranged along the length direction inside the bending pipe feeding box 15. The operator holds the load-bearing plates 16 on both sides of the bending pipe feeding box 15 with both hands and aligns the material box limiting rod 17 at the bottom of the bending pipe feeding box 15 with the limiting hole on the first material box support frame 14. Then, slowly push the bending pipe feeding box 15 downward so that the material box limiting rod 17 is fully inserted into the limiting hole of the first material box support frame 14. At this time, the lower wall surface of the two load-bearing plates 16 is in contact with the upper wall surface of the first material box support frame 14, and the bending pipe feeding box 15 is stably supported. Following the above "loading operation" steps, complete the loading of another set of bent pipe unloading boxes 15, ensuring that the internal bent pipe bodies 9 are neatly arranged and limited by the bent pipe limiting block 18; move the spare bent pipe unloading box 15 to the second material box support frame 20 on the upper wall of the bent pipe workbench 1, and similarly, through the cooperation of the material box limiting rod 17 with the limiting hole of the second material box support frame 20, place the spare bent pipe unloading box 15 stably on the second material box support frame 20, so as to facilitate the quick replacement of the bent pipe unloading box 15 and realize continuous operation.

[0021] Example 2: In this example, the cyclical coordination logic of two sets of feeding racks ensures that the bending tube body 9 can be accurately delivered to the bending position, and the next feeding can be quickly connected after the bending is completed, thereby improving the overall operation efficiency.

[0022] Specifically, the cylinder worktable 8 is activated, and the cylinder worktable 8 controls the movement of the first feeding frame 10 connected to its telescopic end via the first set of cylinders; until the receiving block 13 connected to the two sets of telescopic rods 12 above it moves directly below the discharge port of the bent tube unloading box 15 on the first material box support frame 14, at which point the movement of the first feeding frame 10 stops; the bent tube limiting block 18 of the bent tube unloading box 15 is activated, and the bent tube limiting block 18 is controlled to reset and retract, withdrawing from the inside of the bent tube unloading box 15. At this time, the bent tube body 9 at the discharge port of the bent tube unloading box 15 is no longer obstructed and falls under the action of gravity, landing precisely on the first feeding frame 10. Inside the two receiving blocks 13 above the material rack 10; after the bent pipe body 9 falls into the receiving block 13, the positioning pin 19 in the first material box support frame 14 is activated, controlling the positioning pin 19 to extend towards the discharge port of the bent pipe lowering box 15. The tip of the positioning pin 19 pushes into the side wall of the bent pipe body 9 adjacent to the discharge port inside the bent pipe lowering box 15, forming a limit to prevent the bent pipe body 9 from slipping off prematurely during subsequent feeding; then the cylinder worktable 8 is activated again, controlling the first feeding rack 10 to move towards the wheel 4. The first feeding rack 10 drives the receiving block 13 and the bent pipe body 9 inside to move synchronously, moving past... During the process, the support slider 23 slides stably along the guide groove 21 to ensure that the bent pipe body 9 does not deviate; when the first feeding frame 10 moves to directly above the two limit frames 5, it stops moving; the two sets of telescopic rods 12 on the first feeding frame 10 are activated, and the telescopic rods 12 are controlled to retract, driving the two receiving blocks 13 to move downward synchronously until the two receiving blocks 13 are completely below the two limit frames 5; during the downward movement of the receiving blocks 13, the bent pipe body 9 it carries gradually detaches from the receiving blocks 13 and falls inside the two limit frames 5, and under the guidance of the rounded chamfer 24 inside the limit frames 5, it automatically slides into the two fixed positions. Between the top rollers 7 connected by the positioning shaft 6, the outer wall of the bending tube body 9 is in contact with the side walls of the two top rollers 7; then the hydraulic cylinder 3 in the storage groove 2 inside the bending workbench 1 is activated. The telescopic end of the hydraulic cylinder 3 drives the wheel 4 to move forward along the storage groove 2. The outer wall of the wheel 4 gradually contacts the side wall of the bending tube body 9 and applies pressure. At the same time, the two top rollers 7 rotate synchronously with the bending tube body 9 under the support of the positioning shaft 6 until the bending tube body 9 bends to the preset angle. The hydraulic cylinder 3 stops moving, and the bending operation is completed. After the bending is completed, the operator uses tools to remove the formed bending tube from between the two top rollers 7.

[0023] When the two sets of telescopic rods 12 on the first feeding frame 10 retract until the receiving block 13 is below the limiting frame 5, the second set of cylinders on the cylinder worktable 8 that control the second feeding frame 11, as well as the two sets of telescopic rods 12 on the second feeding frame 11, are simultaneously activated. Driven by the cylinders, the second feeding frame 11 moves towards the first material box support frame 14, while the two sets of telescopic rods 12 extend, causing the two receiving blocks 13 on the second feeding frame 11 to move upward until the receiving blocks 13 reach directly below the outlet of the bent pipe unloading box 15. The positioning pin 19 is activated, controlling the positioning pin 19 to reset and retract, disengaging from the limiting of the bent pipe body 9 inside the bent pipe unloading box 15. At this time, the bent pipe body inside the bent pipe unloading box 15... 9 falls under the action of gravity and lands in the two receiving blocks 13 of the second feeding frame 11; then the positioning pin 19 extends again and pushes into the bending tube body 9 at the outlet of the bending tube unloading box 15 to complete the limit; after the first feeding frame 10 completes the bending and the operator removes the formed bending tube, the cylinder worktable 8 controls the first feeding frame 10 to retract to the initial position along the guide groove 21 through the first set of cylinders, during which the two sets of telescopic rods 12 are kept in the retracted state; after the first feeding frame 10 retracts, the second feeding frame 11 follows the above-mentioned "bending tube body 9 is transported to the bending position" step to transport the bent tube body 9 carried to the two limit frames 5, repeating the bending operation; in this cycle, continuous feeding and bending are realized.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe bending machine, comprising a pipe bending workbench (1), wherein a receiving groove (2) is provided inside the pipe bending workbench (1), and a hydraulic cylinder (3) connected to a hydraulic workstation inside the pipe bending workbench (1) is fixedly installed inside the receiving groove (2), wherein a wheel disc (4) is fixedly installed at the connecting end of the hydraulic cylinder (3), characterized in that, Two limiting frames (5) are fixedly installed on the side wall inside the bending workbench (1). The two limiting frames (5) are respectively rotatably connected to the top wheel (7) through the positioning shaft (6). A cylinder workbench (8) is fixedly installed inside the bending workbench (1). A feeding structure for continuously conveying the bent pipe body (9) is fixedly installed on the cylinder workbench (8). The feeding structure includes: a first feeding rack (10) and a second feeding rack (11). The first feeding rack (10) and the second feeding rack (11) are respectively fixedly installed on the cylinder telescopic end on the cylinder worktable (8). Two sets of telescopic rods (12) are respectively fixedly installed on the upper wall of the first feeding rack (10) and the second feeding rack (11). The telescopic ends of the two sets of telescopic rods (12) are respectively fixedly installed with receiving blocks (13). The upper wall of the bending workbench (1) is also fixedly installed with a first material box support frame (14), and a feeding structure for conveying the bent pipe body (9) to the feeding structure is inserted into the first material box support frame (14).

2. The pipe bending machine according to claim 1, characterized in that, The feeding structure includes: a bent pipe feeding box (15) and two load-bearing plates (16). A material box limiting rod (17) is fixedly installed on the lower wall of the two load-bearing plates (16). A bent pipe limiting block (18) is telescopically connected to the outlet of the bent pipe feeding box (15). Several bent pipe bodies (9) are arranged and stored in the bent pipe feeding box (15) and are limited by the bent pipe limiting block (18).

3. A pipe bending machine according to claim 2, characterized in that, The first material box support frame (14) is fixedly installed with a positioning pin (19) for limiting the position of the bent pipe body (9) at the outlet of the bent pipe feeding box (15).

4. A pipe bending machine according to claim 2, characterized in that, The upper wall of the bending workbench (1) is fixedly equipped with a second material box support frame (20) for supporting the spare bending material box (15).

5. A pipe bending machine according to claim 1, characterized in that, The two limiting frames (5) have rounded chamfers (24) at positions opposite to the positioning shaft (6) to serve as guides.

6. A pipe bending machine according to claim 1, characterized in that, When the two sets of telescopic rods (12) drive the receiving blocks (13) to retract at the lowest stroke, the two receiving blocks (13) are located below the two limit frames (5).

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