Clamping mechanism of pipe bending machine

Abstract

The utility model discloses a pipe bender clamping mechanism which comprises a machine frame, a hydraulic air cylinder, a telescopic rod, a chuck, a connecting rod, a supporting block and an auxiliary fixing structure, the machine frame is of a concentric-square-shaped structure, the hydraulic air cylinder is arranged in the middle of the upper portion of the machine frame, and the output end of the hydraulic air cylinder penetrates through the machine frame to be connected with the telescopic rod. The tail end of the telescopic rod is connected with a chuck, a connecting rod is arranged in the middle of the inner wall of the lower portion of the rack, a supporting block is arranged above the connecting rod, the supporting block is perpendicular to the chuck, auxiliary fixing structures are symmetrically arranged on the two sides of the rack, and each auxiliary fixing structure comprises a rotating rod, a first rotating head and an auxiliary fixing block; one end of the rotating rod is connected with a first rotating head, the other end of the rotating rod penetrates through the rack to be connected with an auxiliary fixing block, the outer wall of a pipe can be clamped and fixed in all directions, the deviation condition in the bending process is avoided, and quick disassembly and replacement can be achieved when the chuck is damaged.

Description

[Technical field]

[0001] The utility model relates to the technical field of pipe bending machines, in particular to the technical field of a clamping mechanism of a pipe bending machine. [Background technology]

[0002] A pipe bender is a device used to process pipes. Its main function is to bend metal pipes with different diameters and bending radii. The main components of a pipe bender include a clamping mechanism, a manipulator, a mold, etc. These components can be used to accurately bend metal pipes of different diameters. There are also many places in a car that require a pipe bender for processing, such as exhaust pipes, oil pipes, etc. Pipe benders can accurately bend these pipes to make them more in line with the design requirements of the car, while improving the performance and durability of the car. In short, a pipe bender is a very important equipment and is widely used in the fields of furniture, automobiles, aerospace, etc. It can greatly improve production efficiency and save manpower and material resources. Traditional pipe benders usually use manual methods to fix and move pipe fittings when bending. However, the process of bending is time-consuming and labor-intensive, and manual fixation is prone to errors, resulting in poor bending effects on pipe fittings.

[0003] In order to solve the problems in the background technology, publication number CN215845322U discloses a clamping mechanism for a pipe bending machine, in which the two clamping blocks slide toward or away from each other through the sliding cooperation between the push block and the two sliding blocks, until the clamping space between the two clamping blocks is slightly larger than the outer diameter of the pipe, and then the pipe is passed through the feed hole and placed between the two clamping blocks, and then the cylinder is started, so that the two clamping blocks slide toward each other under the drive of the cylinder until the two clamping blocks clamp the pipe, and then the pipe can be bent. The side of the two clamping blocks close to each other is in a < shape, so that it can adapt to the clamping of pipes of various specifications and sizes. However, the structure still has the following shortcomings:

[0004] 1. Since the pipe is circular in structure, the two clamping blocks in this structure cannot clamp and fix the pipe in all directions, and it is easy to deviate during the bending process.

[0005] 2. The clamping block in this structure is not convenient to replace, so that when the clamping block is damaged, it cannot be quickly disassembled and replaced, resulting in slow work progress. [Utility Model Content]

[0006] The purpose of the utility model is to solve the problems in the prior art and to propose a pipe bending machine clamping mechanism that can clamp and fix the outer wall of the pipe in all directions to avoid deviation during the bending process, and can quickly disassemble and replace the chuck when it is damaged.

[0007] To achieve the above-mentioned purpose, the utility model proposes a pipe bending machine clamping mechanism, including a frame, a hydraulic cylinder, a telescopic rod, a chuck, a connecting rod, a support block, and an auxiliary fixing structure. The frame is in a U-shaped structure, a hydraulic cylinder is arranged in the upper middle part of the frame, the output end of the hydraulic cylinder passes through the frame and is connected to the telescopic rod, the end of the telescopic rod is connected to the chuck, a connecting rod is arranged in the middle of the lower inner wall of the frame, a support block is arranged above the connecting rod, the support block is perpendicular to the chuck, and auxiliary fixing structures are symmetrically arranged on both sides of the frame.

[0008] Preferably, the auxiliary fixing structure comprises a rotating rod, a first rotating head, and an auxiliary fixing block, one end of the rotating rod is connected to the first rotating head, and the other end of the rotating rod passes through the frame and is connected to the auxiliary fixing block.

[0009] Preferably, the inner sides of the chuck, the support block and the auxiliary fixing block are all oriented toward the center of the frame, and arc-shaped grooves are formed on the inner sides of the chuck, the support block and the auxiliary fixing block.

[0010] Preferably, a circular block is provided at the end of the telescopic rod, and a circular hole is opened in the middle of the circular block.

[0011] Preferably, a hole is provided in the upper middle portion of the chuck, and the size of the hole matches the size of the circular block.

[0012] Preferably, a threaded hole is provided on the outer wall of the chuck, and a threaded rod is detachably installed inside the chuck through the threaded hole, one end of the threaded rod extends outward and is connected to a second rotating head, the other end of the threaded rod extends outward and is equipped with a locking nut, and the size of the threaded rod is adapted to the size of the circular hole.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model can perform all-round clamping and fixing of the outer wall of the pipe through the coordinated action of the chuck, the support block and the auxiliary fixing structure. When the bent pipe is stably placed in the arc-shaped groove on the support block, the hydraulic cylinder is first controlled by an external power supply, and the hydraulic cylinder drives the telescopic rod to descend, and the telescopic rod drives the chuck to descend until it contacts the upper part of the outer wall of the pipe, and then the first rotating head is rotated, and the first rotating head drives the rotating rod to rotate, and the rotating rod drives the auxiliary fixing block to move until the auxiliary fixing block is attached to both sides of the outer wall of the pipe, thereby achieving all-round clamping and fixing of the outer wall of the pipe, which can avoid the situation of deviation during the bending process, and can be applicable to pipes of different specifications, has strong practicality, improves work efficiency, and solves the problem that the two clamping blocks cannot clamp the pipe in all directions and are prone to deviation.

[0015] 2. The utility model can realize quick disassembly and replacement when the chuck is damaged through the coordinated action of the circular block, the circular hole, the hole, the threaded hole, the threaded rod, the second rotating head and the locking nut. When the chuck is damaged, the locking nut is first rotated to remove it from the threaded rod, and then the second rotating head is rotated to remove the threaded rod from the chuck, so that the chuck is separated from the telescopic rod, thereby realizing quick disassembly. When the chuck needs to be installed, the circular block on the telescopic rod is inserted into the hole on the chuck, and then the second rotating head is rotated to drive one end of the threaded rod to pass through the circular hole on the circular block until it extends out of the outside of the chuck, and then the locking nut is used to complete the installation, thereby realizing quick disassembly and replacement, speeding up the work progress, and solving the problem that the chuck cannot be quickly replaced when it is damaged and the work progress is affected.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0017] Figure 1 It is a three-dimensional diagram of a clamping mechanism of a pipe bending machine of the utility model;

[0018] Figure 2 It is a plan view of a clamping mechanism of a pipe bending machine of the utility model;

[0019] Figure 3 It is a schematic diagram of a telescopic rod and a chuck of a clamping mechanism of a pipe bending machine of the utility model;

[0020] In the figure: 1-frame, 2-hydraulic cylinder, 3-telescopic rod, 4-chuck, 5-connecting rod, 6-support block, 7-auxiliary fixing structure, 71-rotating rod, 72-first rotating head, 73-auxiliary fixing block, 8-arc groove, 9-circular block, 10-circular hole, 11-hole, 12-threaded hole, 13-threaded rod, 14-second rotating head, 15-locking nut. [Specific implementation method]

[0021] See also Figure 1 The utility model discloses a pipe bending machine clamping mechanism, comprising a frame 1, a hydraulic cylinder 2, a telescopic rod 3, a chuck 4, a connecting rod 5, a support block 6, and an auxiliary fixing structure 7. The frame 1 is in a U-shaped structure, a hydraulic cylinder 2 is arranged in the middle of the upper part of the frame 1, the output end of the hydraulic cylinder 2 passes through the frame 1 and is connected with the telescopic rod 3, the end of the telescopic rod 3 is connected with the chuck 4, a connecting rod 5 is arranged in the middle of the lower inner wall of the frame 1, a support block 6 is arranged above the connecting rod 5, the support block 6 is perpendicular to the chuck 4, and auxiliary fixing structures 7 are symmetrically arranged on both sides of the frame 1.

[0022] See also Figure 2The utility model is a clamping mechanism for a pipe bending machine. The auxiliary fixing structure 7 includes a rotating rod 71, a first rotating head 72, and an auxiliary fixing block 73. One end of the rotating rod 71 is connected to the first rotating head 72, and the other end of the rotating rod 71 passes through the frame 1 and is connected to the auxiliary fixing block 73. The inner sides of the chuck 4, the support block 6, and the auxiliary fixing block 73 are all facing the center position of the frame 1, and the inner sides of the chuck 4, the support block 6, and the auxiliary fixing block 73 are all provided with an arc groove 8. When the bent pipe is stably placed on the arc groove on the support block 6, After being inserted into the groove 8, the hydraulic cylinder 2 is first controlled by an external power supply, and the hydraulic cylinder 2 drives the telescopic rod 3 to descend, and the telescopic rod 3 drives the clamp 4 to descend until it contacts the upper part of the outer wall of the pipe, and then the first rotating head 72 is rotated, and the first rotating head 72 drives the rotating rod 71 to rotate, and the rotating rod 71 drives the auxiliary fixing block 73 to move until the auxiliary fixing block 73 is attached to both sides of the outer wall of the pipe, thereby realizing all-round clamping and fixing of the outer wall of the pipe, which can avoid the situation of deviation during the bending process, and can be applicable to pipes of different specifications, with strong practicality.

[0023] See also Figure 3 The utility model provides a clamping mechanism for a pipe bending machine, wherein a circular block 9 is provided at the end of the telescopic rod 3, a circular hole 10 is provided in the middle of the circular block 9, a hole 11 is provided in the middle of the upper part of the chuck 4, and the size of the hole 11 matches the size of the circular block 9, a threaded hole 12 is provided on the outer wall of the chuck 4, a threaded rod 13 is detachably installed inside the chuck 4 through the threaded hole 12, one end of the threaded rod 13 extends outwardly to be connected with a second rotating head 14, the other end of the threaded rod 13 extends outwardly and is equipped with a locking nut 15, and the size of the threaded rod 13 matches the size of the circular hole The size of 10 is adapted. When the chuck 4 is damaged, the locking nut 15 is first rotated to remove it from the threaded rod 13, and then the second rotating head 14 is rotated to remove the threaded rod 13 from the chuck 4, so that the chuck 4 is separated from the telescopic rod 3, thereby realizing quick disassembly. When the chuck 4 needs to be installed, the circular block 9 on the telescopic rod 3 is inserted into the hole 11 on the chuck 4, and then the second rotating head 14 is rotated to drive one end of the threaded rod 13 to pass through the circular hole 10 on the circular block 9 until it extends out of the outside of the chuck 4, and then the locking nut 15 is used to complete the installation, thereby realizing quick disassembly and replacement, speeding up the work progress.

[0024] Working process of this utility model:

[0025] The utility model discloses a pipe bending machine clamping mechanism. During the working process, when the bent pipe is stably placed in the arc groove 8 on the support block 6, the hydraulic cylinder 2 is first controlled by an external power supply, and the hydraulic cylinder 2 drives the telescopic rod 3 to descend, and the telescopic rod 3 drives the clamp 4 to descend until it contacts the upper part of the outer wall of the pipe, and then the first rotating head 72 is rotated, and the first rotating head 72 drives the rotating rod 71 to rotate, and the rotating rod 71 drives the auxiliary fixing block 73 to move until the auxiliary fixing block 73 is attached to both sides of the outer wall of the pipe, thereby realizing all-round clamping and fixing of the outer wall of the pipe, which can avoid deviation during the bending process. The invention can be applied to pipes of different specifications. When the chuck 4 is damaged, the locking nut 15 is firstly rotated to remove it from the threaded rod 13, and then the second rotating head 14 is rotated to remove the threaded rod 13 from the chuck 4, so that the chuck 4 is separated from the telescopic rod 3, thereby realizing quick disassembly. When the chuck 4 needs to be installed, the circular block 9 on the telescopic rod 3 is inserted into the hole 11 on the chuck 4, and then the second rotating head 14 is rotated to drive one end of the threaded rod 13 to pass through the circular hole 10 on the circular block 9 until it extends out of the outside of the chuck 4, and then the locking nut 15 is used to complete the installation, thereby realizing quick disassembly and replacement, and speeding up the work progress.

[0026] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A pipe bending machine clamping mechanism, characterized in that: The invention comprises a frame (1), a hydraulic cylinder (2), a telescopic rod (3), a clamp (4), a connecting rod (5), a support block (6), and an auxiliary fixing structure (7); the frame (1) is in a U-shaped structure; a hydraulic cylinder (2) is arranged in the middle of the upper part of the frame (1); an output end of the hydraulic cylinder (2) passes through the frame (1) and is connected to the telescopic rod (3); the end of the telescopic rod (3) is connected to the clamp (4); a connecting rod (5) is arranged in the middle of the lower inner wall of the frame (1); a support block (6) is arranged above the connecting rod (5); the support block (6) is perpendicular to the clamp (4); and auxiliary fixing structures (7) are symmetrically arranged on both sides of the frame (1).

2. A pipe bending machine clamping mechanism as claimed in claim 1, characterized in that: The auxiliary fixing structure (7) comprises a rotating rod (71), a first rotating head (72), and an auxiliary fixing block (73); one end of the rotating rod (71) is connected to the first rotating head (72), and the other end of the rotating rod (71) passes through the frame (1) and is connected to the auxiliary fixing block (73).

3. A pipe bending machine clamping mechanism as claimed in claim 2, characterized in that: The inner sides of the clamp (4), the support block (6) and the auxiliary fixing block (73) are all oriented toward the center of the frame (1), and the inner sides of the clamp (4), the support block (6) and the auxiliary fixing block (73) are all provided with arc-shaped grooves (8).

4. A pipe bending machine clamping mechanism as claimed in claim 1, characterized in that: A circular block (9) is provided at the end of the telescopic rod (3), and a circular hole (10) is opened in the middle of the circular block (9).

5. A pipe bending machine clamping mechanism as claimed in claim 4, characterized in that: A hole (11) is provided in the middle of the upper part of the clamp (4), and the size of the hole (11) is matched with the size of the circular block (9).

6. A pipe bending machine clamping mechanism according to any one of claims 1 to 5, characterized in that: The outer wall of the chuck (4) is provided with a threaded hole (12), and a threaded rod (13) is detachably mounted inside the chuck (4) through the threaded hole (12), one end of the threaded rod (13) extends outwardly and is connected to a second rotating head (14), and the other end of the threaded rod (13) extends outwardly and is equipped with a locking nut (15), and the size of the threaded rod (13) is adapted to the size of the circular hole (10).

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