Automatic pipe cutting device and pipe cutting method

Abstract

The application provides an automatic pipe cutting device and a pipe cutting method, and relates to the technical field of steel pipe cutting. The automatic pipe cutting device comprises a rack, a fixed blade, a rotating mechanism and a fixing mechanism. The fixed blade is rotatably connected to the upper end of the rack, and a first rotating source is fixedly connected to the connection part of the fixed blade and the rack. The first rotating source is used for driving the fixed blade to rotate. The rotating mechanism is provided in multiple and arranged on the mounting frame. The rotating mechanism drives the steel pipe to move close to the fixed blade under the driving of the cylinder. The cylinder is fixedly connected to the inside of the rack, and the cylinder driving shaft is arranged outside the rack. The cylinder is used for driving the rotating mechanism to move close to the fixed blade. The fixing mechanism is arranged above the rotating mechanism, and is used for fixing the steel pipe on the rotating mechanism. The application can not only reduce the deflection problem caused by the repeated movement of the cutting knife, but also reduce the pipe cutting deformation problem.

Description

Technical Field

[0001] This invention relates to the field of steel pipe cutting technology, specifically to an automatic pipe cutting device and a pipe cutting method. Background Technology

[0002] Steel pipes are commonly used in the manufacturing of buildings and infrastructure. They are used to construct structures such as columns, beams, stairs, handrails, and roofs. Steel pipes are usually supplied in standard lengths, but during use, they need to be cut according to specific usage and requirements to achieve the required length or shape. In some projects, steel pipes need to be cut into predetermined shapes and sizes for connection or assembly with other components or structures.

[0003] Referring to Chinese Patent Application No. CN201821260507.0, entitled "Steel Pipe Cutting Machine", the patent includes: a cutting table, a clamp connected to the cutting table, a support frame fixedly connected to the cutting table, a cutting blade disk slidably connected to the support frame, the clamp fixing the steel pipe to the cutting table, and the cutting blade disk on the support frame moving down to cut the steel pipe fixed by the clamp.

[0004] Referring to the above technical solution, the inventors discovered that when cutting pipes, the cutting disc needs to move up and down repeatedly. Prolonged use can easily cause wear on the parts near the cutting disc, causing the cutting disc to deflect or shift, which in turn leads to a decrease in the accuracy of pipe cutting. Summary of the Invention

[0005] In view of this, the present invention provides an automatic pipe cutting device and a pipe cutting method, which can not only reduce the deflection problem caused by repeated movement of the cutting blade, but also reduce the problem of pipe cut deformation or burrs when cutting multiple pipes.

[0006] Firstly, this application provides an automatic pipe cutting device with the following technical solution:

[0007] An automatic pipe cutting device includes: a frame with a mounting bracket on it; a fixed blade plate rotatably connected to the upper end of the frame, a first rotation source fixedly connected to the connection between the fixed blade plate and the frame, the first rotation source driving the fixed blade plate to rotate; multiple rotating mechanisms mounted on the mounting bracket, the rotating mechanisms driving the steel pipe closer to the fixed blade plate by a cylinder; a cylinder fixedly connected inside the frame, the cylinder drive shaft extending out of the frame, the cylinder driving the rotating mechanisms closer to the fixed blade plate; and a fixing mechanism positioned above the rotating mechanisms, the fixing mechanism fixing the steel pipe to the rotating mechanisms.

[0008] By adopting the above technical solution, the steel pipe is placed on the rotating mechanism, and the steel pipe on the rotating mechanism is fixed to the rotating mechanism by the fixing mechanism. The first rotating source rotates, driving the fixed blade plate to rotate. The cylinder starts and drives the rotating mechanism to move closer to the fixed blade plate, so that the fixed blade plate cuts the steel pipe on the rotating mechanism. The cylinder retracts and drives the rotating mechanism to move away from the fixed blade plate, releasing the fixed blade plate from cutting the steel pipe. The fixing mechanism moves upward, so that the fixing mechanism releases the steel pipe from the fixing mechanism. The cut steel pipe is then taken out, and this action is repeated.

[0009] The fixed blade plate design increases stability and consistency during the cutting process, resulting in higher cutting accuracy. It also provides a more complete cutting environment by reducing vibration and shaking, thus lowering the risk of accidental injury. Furthermore, by fixing the blade plate and moving the fixing mechanism upwards, the pipe on the fixing mechanism is brought closer to the fixed blade plate. After prolonged use, if the fixing mechanism deviates, it is easier to directly replace the pipe. Moreover, the damage to the pipe is less than the loss from replacing the fixed blade plate.

[0010] Optionally, the rotating mechanism includes: a fixed rod, fixedly connected to the mounting bracket, and multiple rods arranged opposite each other; a connecting bracket, slidably connected to the fixed rod, and two connecting brackets arranged opposite each other, wherein a placement groove is provided on the connecting bracket; and a first rotating shaft, rotatably connected to the two oppositely arranged connecting brackets, and disposed on both sides of the placement groove.

[0011] By adopting the above technical solution, the steel pipe is placed in the placement groove, the cylinder is started, and the cylinder drive shaft drives the connecting frame to move upward along the fixed rod, so that the connecting frame is close to the fixed blade plate. The first rotating shaft rotates, causing the steel pipe placed in the placement groove to rotate, so that the side wall of the steel pipe contacts the fixed blade plate, and the fixed blade plate cuts the side wall of the steel pipe.

[0012] The rotating mechanism serves two purposes. First, it enables uniform cutting of the steel pipe through rotation. By rotating the steel pipe around its own axis, the fixed blade makes even contact with all parts of the pipe, resulting in uniform cutting and reducing the probability of burrs. Second, the rotation of the steel pipe reduces wear on the fixed blade. When the steel pipe rotates under the drive of the first rotating shaft, the contact area between the fixed blade and the steel pipe is relatively small, reducing friction and impact, extending the service life of the cutting blade, and reducing the frequency and cost of replacing the fixed blade.

[0013] Optionally, a synchronizing rod is fixedly connected to the side wall of the connecting frame, and a synchronizing shaft is provided on the side wall of the connecting frame away from the synchronizing rod. The synchronizing shaft is slidably connected to the synchronizing rod on the side close to the synchronizing shaft.

[0014] By adopting the above technical solution, the cylinder starts and drives the connecting frame to slide on the fixed rod, so that the connecting frame is close to the fixed blade plate. The synchronous shafts on the side walls of two adjacent connecting frames retract on the synchronous rod, so that multiple connecting frames move synchronously and move towards the fixed blade plate under the drive of the cylinder, so that the steel pipe on the connecting frame is cut synchronously by the fixed blade plate.

[0015] The synchronous rod serves two main purposes. First, it moves the steel pipe towards the fixed blade, enabling precise cutting. By synchronously controlling the movement speed and position of both the steel pipe and the fixed blade, it ensures that the fixed blade maintains appropriate contact force and cutting angle with the steel pipe, preventing misalignment or slippage between them. Second, it improves cutting efficiency by moving the steel pipe towards the fixed blade. Synchronously controlling the movement speed of both ensures that the fixed blade contacts the steel pipe at an appropriate speed, thus achieving efficient cutting.

[0016] Optionally, a second rotation source is fixedly connected to the side wall of the connecting frame, and the second rotation source is used to drive the first rotation shaft to rotate.

[0017] Optionally, the fixing mechanism includes: a fixing block slidably connected to the fixing rod; and a locking spring fixedly connected to the upper wall of the locking block, wherein a fixing baffle is fixedly connected to the end of the locking spring away from the fixing block.

[0018] By adopting the above technical solution, the fixing block slides on the fixing rod under the push of the locking spring, and the fixing block moves down to the upper surface of the steel pipe to fix the steel pipe and lock it in the placement groove.

[0019] The fixing mechanism serves two purposes. First, it keeps the steel pipe stable during cutting, improving cutting quality. When the pipe remains stable, the fixed blade cuts the surface more evenly, preventing pipe deviation or vibration. Second, it reduces cutting errors. With the pipe stable during cutting, the relative position and angle between the fixed blade and the pipe are easier to control, preventing errors and ensuring accurate and consistent cutting.

[0020] Optionally, a baffle plate is fitted on the side of the fixed blade away from the rotating mechanism, and the baffle plate is used to block sparks from the fixed blade when cutting the steel pipe.

[0021] The use of baffles improves safety by reducing the risk of fire or burns caused by sparks and fires generated during cutting. The baffles effectively block sparks from splashing, minimizing the risk of fire and burns. Furthermore, they reduce damage and contamination during cutting, preventing sparks from reaching surrounding objects or equipment and protecting the environment.

[0022] Optionally, the first rotation source is a motor, a rotating belt is sleeved on the output shaft of the first rotation source, and a second rotating shaft is provided at the end of the rotating belt away from the first rotation source. The second rotating shaft is fixedly connected to the fixed blade plate and is used to drive the fixed blade plate to rotate.

[0023] When the motor starts, it drives the rotating belt on the motor output shaft to rotate, which in turn drives the second rotating shaft to rotate. The second rotating shaft then drives the fixed blade plate to rotate, causing the fixed blade plate to perform circumferential cutting on the side wall of the steel pipe.

[0024] Secondly, this application provides a pipe cutting method for an automatic pipe cutting device, the operation steps of which are as follows:

[0025] S1. Place the rack on a horizontal surface;

[0026] S2. Start the fixed blade plate. The motor starts and drives the rotating belt on the motor output shaft to rotate, which in turn drives the second rotating shaft to rotate. The second rotating shaft then drives the fixed blade plate to rotate.

[0027] S3. Fix the steel pipe, drag the fixing block upwards to slide the fixing block on the fixing rod, place the steel pipe in the placement slot on the connecting frame, release the drag of the fixing block, and let the fixing block move to the upper surface of the steel pipe under the push of the locking spring to fix the steel pipe.

[0028] S4. The connecting frame drives the steel pipe to rotate, the cylinder is started, and the drive shaft of the cylinder drives the connecting frame to move upward along the fixed rod. The second rotation source is started, which drives the first rotation shaft connected to the second rotation source to rotate. The rotation of the first rotation shaft drives the steel pipe placed in the placement groove to rotate.

[0029] S5. The cylinder drives the connecting frame to move synchronously closer to the fixed blade plate. The cylinder starts and drives the connecting frame to slide on the fixed rod, so that the connecting frame moves closer to the fixed blade plate. The synchronous shafts on the side walls of two adjacent connecting frames retract on the synchronous rod, so that multiple connecting frames move synchronously and move towards the fixed blade plate under the drive of the cylinder.

[0030] S6. The fixed blade cuts the steel pipe. The second rotation source is started, which drives the first rotation shaft connected to the second rotation source to rotate. The rotation of the first rotation shaft drives the steel pipe placed in the placement groove to rotate. The side wall of the steel pipe contacts the fixed blade, so that the fixed blade cuts the side wall of the rotating steel pipe.

[0031] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0032] 1. The fixed blade plate setting increases the stability and consistency of the cutting process, thereby providing higher cutting accuracy. At the same time, the fixed cutting blade provides a more complete cutting environment. By fixing the blade plate, vibration and shaking during the cutting process are reduced, thus lowering the risk of accidental injury. On the other hand, by fixing the blade plate and moving the fixing mechanism upward, the pipe on the fixing mechanism is brought closer to the fixed blade plate. After long-term use, when the fixing mechanism deviates, it is more convenient to directly replace the position of the pipe. Moreover, the damage to the pipe is less than the loss of replacing the fixed blade plate.

[0033] 2. The rotating mechanism serves two purposes. First, it enables uniform cutting of the steel pipe through rotation. By rotating the steel pipe around its own axis, the fixed blade makes even contact with all parts of the pipe, resulting in uniform cutting and reducing the probability of burrs. Second, the rotation of the steel pipe reduces wear on the fixed blade. When the steel pipe rotates under the drive of the first rotating shaft, the contact area between the fixed blade and the steel pipe is relatively small, reducing friction and impact, extending the service life of the cutting blade, and reducing the frequency and cost of replacing the fixed blade.

[0034] 3. The synchronous rod serves two main purposes. First, it moves the steel pipe towards the fixed blade, enabling precise cutting. By synchronously controlling the movement speed and position of the steel pipe and the fixed blade, it ensures that the fixed blade maintains appropriate contact force and cutting angle with the steel pipe, preventing offset or slippage between them. Second, it improves cutting efficiency by moving the steel pipe towards the fixed blade. Synchronously controlling the movement speed of both ensures that the fixed blade contacts the steel pipe at an appropriate speed, thus achieving efficient cutting.

[0035] 4. The fixing mechanism serves two purposes: firstly, it keeps the steel pipe stable during cutting, improving cutting quality. When the steel pipe remains stable during cutting, the fixed blade cuts the pipe surface more evenly, preventing deviation or vibration. Secondly, it reduces cutting errors. When the steel pipe remains stable during cutting, the relative position and angle between the fixed blade and the pipe are easier to control, thus avoiding cutting errors and ensuring accuracy and consistency in the cut. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of an automatic pipe cutting device according to an embodiment of this application;

[0037] Figure 2 This application provides a schematic diagram of the rotating mechanism's structure as an embodiment.

[0038] Figure 3 A schematic diagram of the fixing mechanism is shown for an embodiment of this application;

[0039] Figure 4 This is a schematic diagram illustrating the structure of the first rotation source in an embodiment of this application.

[0040] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Mounting bracket; 2. Fixed blade plate; 3. First rotation source; 31. Motor; 32. Rotating belt; 33. Second rotating shaft; 4. Cylinder; 5. Rotating mechanism; 51. Fixed rod; 52. Connecting bracket; 53. Placement slot; 54. First rotating shaft; 55. Synchronizing rod; 56. Synchronizing shaft; 57. Second rotation source; 6. Fixing mechanism; 61. Fixing block; 62. Locking spring; 63. Fixed baffle; 7. Barrier plate. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figure 1-4 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0042] Firstly, this application provides an automatic pipe cutting device with the following technical solution:

[0043] Reference Figure 1 An automatic pipe cutting device includes: a frame 1, a mounting frame 11 on the frame 1, a fixed blade 2 rotatably connected to the upper end of the frame 1, a first rotation source 3 fixedly connected at the connection between the fixed blade 2 and the frame 1, the first rotation source 3 being used to drive the fixed blade 2 to rotate, a cylinder 4 fixedly connected inside the frame 1, the drive shaft of the cylinder 4 extending out of the frame 1, a plurality of rotating mechanisms 5 on the mounting frame 11, the rotating mechanisms 5 being driven by the cylinder 4 to drive the steel pipe closer to the fixed blade 2, a fixing mechanism 6 being provided above the rotating mechanism 5, the fixing mechanism 6 being used to fix the steel pipe on the rotating mechanism 5.

[0044] The steel pipe is placed on the rotating mechanism 5, and the steel pipe on the rotating mechanism 5 is fixed on the rotating mechanism 5 by the fixing mechanism 6. The first rotating source 3 rotates, driving the fixed blade plate 2 to rotate. The cylinder 4 starts, driving the rotating mechanism 5 to move closer to the fixed blade plate 2, so that the fixed blade plate 2 cuts the steel pipe on the rotating mechanism 5. The cylinder 4 retracts, driving the rotating mechanism 5 to move away from the fixed blade plate 2, releasing the fixed blade plate 2 from cutting the steel pipe. The fixing mechanism 6 moves upward, so that the fixing mechanism 6 releases the fixing of the steel pipe. The cut steel pipe is taken out, and this action is repeated.

[0045] The fixed blade plate 2 increases stability and consistency during the cutting process, thereby providing higher cutting accuracy. It also provides a more complete cutting environment by reducing vibration and shaking during cutting, thus lowering the risk of accidental injury. Furthermore, by fixing the fixed blade plate 2 and moving the fixing mechanism 6 upwards, the pipe on the fixing mechanism 6 is brought closer to the fixed blade plate 2. After prolonged use, if the fixing mechanism 6 deviates, it is easier to directly replace the pipe. Moreover, the damage from replacing the pipe is less than the loss from replacing the fixed blade plate 2.

[0046] Reference Figure 2 The rotating mechanism 5 includes: a fixed rod 51 fixedly connected to the mounting bracket 11, multiple fixed rods 51 are provided, a connecting bracket 52 is slidably connected to the fixed rod 51, two connecting brackets 52 are arranged opposite each other, a placement groove 53 is opened on the connecting bracket 52, and a first rotating shaft 54 ​​is rotatably connected between the two oppositely arranged connecting brackets 52, and the first rotating shaft 54 ​​is respectively arranged on both sides of the placement groove 53.

[0047] The steel pipe is placed in the placement groove 53. The cylinder 4 is started, and the drive shaft of the cylinder 4 drives the connecting frame 52 to move upward along the fixed rod 51, so that the connecting frame 52 is close to the fixed blade plate 2. The first rotating shaft 54 ​​rotates, causing the steel pipe placed in the placement groove 53 to rotate, so that the side wall of the steel pipe contacts the fixed blade plate 2, and the fixed blade plate 2 cuts the side wall of the steel pipe.

[0048] The rotating mechanism 5 serves two purposes. First, it enables uniform cutting of the steel pipe through rotation. By rotating the steel pipe around its own axis, the fixed blade 2 makes uniform contact with all parts of the steel pipe, thus achieving uniform cutting and reducing the probability of burrs on the steel pipe. Second, the rotation of the steel pipe reduces wear on the fixed blade 2. When the steel pipe rotates under the drive of the first rotating shaft 54, the contact area between the fixed blade 2 and the steel pipe is relatively small, reducing friction and impact between the fixed blade 2 and the steel pipe, extending the service life of the cutting blade, and reducing the replacement frequency and cost of the fixed blade 2.

[0049] Reference Figure 2A synchronizing rod 55 is fixedly connected to the side wall of the connecting frame 52. A synchronizing shaft 56 is provided at the end of the side wall of the connecting frame 52 away from the synchronizing rod 55. The synchronizing shaft 56 is slidably connected to the synchronizing rod 55 on the side close to the synchronizing shaft 56. A second rotation source 57 is fixedly connected to the side wall of the connecting frame 52. The second rotation source 57 is used to drive the first rotation shaft 54 ​​to rotate.

[0050] When the cylinder 4 starts, it drives the connecting frame 52 to slide on the fixed rod 51, so that the connecting frame 52 is close to the fixed blade plate 2. The synchronous shaft 56 on the side wall of the two adjacent connecting frames 52 retracts on the synchronous rod 55, so that multiple connecting frames 52 move synchronously and move towards the fixed blade plate 2 under the drive of the cylinder 4, so that the steel pipe on the connecting frame 52 is cut synchronously by the fixed blade plate 2.

[0051] The synchronous rod 55 serves two purposes. First, it allows the steel pipe to move towards the fixed blade plate 2, enabling precise cutting. By synchronously controlling the movement speed and position of the steel pipe and the fixed blade plate 2, it ensures that the fixed blade plate 2 maintains appropriate contact force and cutting angle with the steel pipe, preventing offset or slippage between them. Second, it improves cutting efficiency by moving the steel pipe towards the fixed blade plate 2. By synchronously controlling the movement speed of the steel pipe and the fixed blade plate 2, the fixed blade plate 2 contacts the steel pipe at an appropriate speed, thus achieving efficient cutting.

[0052] Reference Figure 3 The fixing mechanism 6 includes: a fixing block 61 is provided above the connecting frame 52, the fixing block 61 is slidably connected to the fixing rod 51, a locking spring 62 is fixedly connected to the upper wall of the fixing block 61, and a fixing baffle 63 is fixedly connected to the end of the locking spring 62 away from the fixing block 61.

[0053] The other end of the locking spring 62 is fixedly connected to a fixing baffle 63. The fixing block 61 slides on the fixing rod 51 under the push of the locking spring 62. The fixing block 61 moves down to the upper surface of the steel pipe to fix the steel pipe and lock it in the placement groove 53.

[0054] The fixing mechanism 6 serves two purposes. First, it keeps the steel pipe stable during cutting, improving cutting quality. When the steel pipe remains stable during cutting, the fixing blade 2 cuts the surface of the steel pipe more evenly, avoiding deviation or vibration of the steel pipe during cutting. Second, it reduces cutting errors. When the steel pipe remains stable during cutting, the relative position and angle between the fixing blade 2 and the steel pipe are easier to control, thus avoiding cutting errors and ensuring the accuracy and consistency of the cut.

[0055] Reference Figure 4 A baffle plate 7 is fitted on the side of the fixed blade plate 2 away from the rotating mechanism 5. The baffle plate 7 is used to block sparks from the fixed blade plate 2 when cutting the steel pipe.

[0056] The baffle plate 7 serves two purposes. First, it enhances safety by reducing the risk of fire or burns caused by sparks and fires generated during cutting. The baffle plate 7 effectively blocks sparks from splashing, minimizing the risk of fire and burns. Second, it reduces damage and contamination during cutting. The baffle plate 7 minimizes spark splashing, preventing it from reaching surrounding objects or equipment and protecting the surrounding environment.

[0057] Reference Figure 4 The first rotation source 3 is a motor 31. A rotating belt 32 is sleeved on the output shaft of the first rotation source 3. A second rotating shaft 33 is provided at the end of the rotating belt 32 away from the first rotation source 3. The second rotating shaft 33 is fixedly connected to the fixed blade plate 2 and is used to drive the fixed blade plate 2 to rotate.

[0058] When the motor 31 starts, it drives the rotating belt 32 on the output shaft of the motor 31 to rotate, which in turn drives the second rotating shaft 33 to rotate. The second rotating shaft 33 drives the fixed blade plate 2 to rotate, so that the fixed blade plate 2 performs circumferential cutting on the side wall of the steel pipe.

[0059] The implementation principle of an automatic pipe cutting device in this embodiment is as follows: the frame 1 is placed on a horizontal surface, the motor 31 is started and drives the rotating belt 32 on the output shaft of the motor 31 to rotate, so that the rotating belt 32 drives the second rotating shaft 33 to rotate, and the second rotating shaft 33 drives the fixed blade plate 2 to rotate, dragging the fixed block 61 upward, so that the fixed block 61 slides on the fixed rod 51, placing the steel pipe in the placement groove 53 on the connecting frame 52, releasing the dragging of the fixed block 61, so that the fixed block 61 moves to the upper surface of the steel pipe under the push of the locking spring 62, and fixing the steel pipe.

[0060] When the cylinder 4 starts, it drives the connecting frame 52 to slide on the fixed rod 51, so that the connecting frame 52 is close to the fixed blade plate 2. The synchronous shaft 56 located on the side wall of the two adjacent connecting frames 52 retracts on the synchronous rod 55, so that multiple connecting frames 52 move synchronously and move towards the fixed blade plate 2 under the drive of the cylinder 4.

[0061] The second rotation source 57 is activated, causing the second rotation source 57 to drive the first rotation shaft 54 ​​to rotate. The rotation of the first rotation shaft 54 ​​causes the steel pipe to rotate. The cylinder 4 drives the connecting frame 52 to move closer to the fixed blade plate 2, so that the fixed blade plate 2 cuts the side wall of the rotating steel pipe.

[0062] Secondly, this application provides a pipe cutting method for an automatic pipe cutting device, the operation steps of which are as follows:

[0063] S1. Place rack 1 on a horizontal surface;

[0064] S2. Start the fixed blade plate 2. The motor 31 starts and drives the rotating belt 32 on the output circle of the motor 31 to rotate. The rotating belt drives the second rotating shaft 33 to rotate, and the second rotating shaft 33 drives the fixed blade plate 2 to rotate.

[0065] S3. Fix the steel pipe, drag the fixing block 61 upward so that the fixing block 61 slides on the fixing rod 51, place the steel pipe in the placement groove 53 on the connecting frame 52, release the drag of the fixing block 61 so that the fixing block 61 moves to the upper surface of the steel pipe under the push of the locking spring 62, and fix the steel pipe.

[0066] S4. The connecting frame 52 drives the steel pipe to rotate, and the cylinder 4 is started, so that the drive shaft of the cylinder 4 drives the connecting frame 52 to move upward along the fixed rod 51. The second rotation source 57 is started, which drives the first rotation shaft 54 ​​connected to the second rotation source 57 to rotate. The rotation of the first rotation shaft 54 ​​drives the steel pipe placed in the placement groove 53 to rotate.

[0067] S5. The cylinder 4 drives the connecting frame 52 to move closer to the fixed blade plate 2. The cylinder 4 starts and drives the connecting frame 52 to slide on the fixed rod 51, so that the connecting frame 52 moves closer to the fixed blade plate 2. The synchronous shaft 56 on the side wall of the two adjacent connecting frames 52 retracts on the synchronous rod 55, so that multiple connecting frames 52 move synchronously and move towards the fixed blade plate 2 under the drive of the cylinder 4.

[0068] S6. The fixed blade 2 cuts the steel pipe. The second rotation source 57 is started, which drives the first rotation shaft 54 ​​connected to the second rotation source 57 to rotate. The rotation of the first rotation shaft 54 ​​drives the steel pipe placed in the placement groove 53 to rotate. The side wall of the steel pipe contacts the fixed blade 2, so that the fixed blade 2 cuts the side wall of the rotating steel pipe.

[0069] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic pipe cutting device, characterized in that, include: A frame (1) is provided with a mounting bracket (11); A fixed blade plate (2) is rotatably connected to the upper end of the frame (1). A first rotation source (3) is fixedly connected at the connection between the fixed blade plate (2) and the frame (1). The first rotation source (3) is used to drive the fixed blade plate (2) to rotate. A cylinder (4) is fixedly connected inside the frame (1), and the drive shaft of the cylinder (4) extends out of the frame (1); Multiple rotating mechanisms (5) are provided and are mounted on the mounting bracket (11). Driven by the cylinder (4), the rotating mechanism (5) drives the steel pipe to approach the fixed blade plate (2). A fixing mechanism (6) is provided above the rotating mechanism (5), and the fixing mechanism (6) is used to fix the steel pipe on the rotating mechanism (5); The rotating mechanism (5) includes: Fixed rods (51) are fixedly connected to the mounting bracket (11), and multiple rods are arranged opposite each other; A connecting frame (52) is slidably connected to the fixed rod (51), and two are arranged opposite each other. The connecting frame (52) is provided with a placement groove (53). The first rotating shaft (54) is rotatably connected in two oppositely arranged connecting frames (52) and is arranged on both sides of the placement slot (53); A synchronizing rod (55) is fixedly connected to the side wall of the connecting frame (52). A synchronizing shaft (56) is provided on the side wall of the connecting frame (52) away from the synchronizing rod (55). The synchronizing shaft (56) is slidably connected in the synchronizing rod (55) on the side close to the synchronizing shaft (56).

2. The automatic pipe cutting device according to claim 1, characterized in that: A second rotation source (57) is fixedly connected to the side wall of the connecting frame (52), and the second rotation source (57) is used to drive the first rotating shaft (54) to rotate.

3. The automatic pipe cutting device according to claim 2, characterized in that: The fixing mechanism (6) includes: The fixing block (61) is slidably connected to the fixing rod (51) and is disposed above the connecting frame (52); A locking spring (62) is fixedly connected to the upper wall of the fixing block (61), and a fixing baffle (63) is fixedly connected to the end of the locking spring (62) away from the fixing block (61).

4. The automatic pipe cutting device according to claim 3, characterized in that: A baffle plate (7) is fitted on the side of the fixed blade (2) away from the rotating mechanism (5). The baffle plate (7) is used to block sparks from the fixed blade (2) when cutting the steel pipe.

5. The automatic pipe cutting device according to claim 4, characterized in that: The first rotation source (3) is a motor (31). A rotating belt (32) is sleeved on the output shaft of the first rotation source (3). A second rotating shaft (33) is provided at the end of the rotating belt (32) away from the first rotation source (3). The second rotating shaft (33) is fixedly connected to the fixed blade plate (2). The second rotating shaft (33) is used to drive the fixed blade plate (2) to rotate.

6. A pipe cutting method for an automatic pipe cutting device according to claim 5, comprising the following steps: S1. Place the rack (1) on a horizontal surface; S2. Start the fixed blade plate (2), the motor (31) starts and drives the rotating belt (32) on the output shaft of the motor (31) to rotate, so that the rotating belt (32) drives the second rotating shaft (33) to rotate, and the second rotating shaft (33) drives the fixed blade plate (2) to rotate; S3. Fix the steel pipe, drag the fixing block (61) upward, so that the fixing block (61) slides on the fixing rod (51), place the steel pipe in the placement slot (53) on the connecting frame (52), release the drag of the fixing block (61), so that the fixing block (61) moves to the upper surface of the steel pipe under the push of the locking spring (62), and fix the steel pipe. S4. The connecting frame (52) drives the steel pipe to rotate, and the cylinder (4) is started, so that the drive shaft of the cylinder (4) drives the connecting frame (52) to move upward along the fixed rod (51). The second rotation source (57) is started, which drives the first rotation shaft (54) connected to the second rotation source (57) to rotate. The rotation of the first rotation shaft (54) drives the steel pipe placed in the placement groove (53) to rotate. S5. The cylinder (4) drives the connecting frame (52) to move closer to the fixed blade plate (2) synchronously. The cylinder (4) starts and drives the connecting frame (52) to slide on the fixed rod (51), so that the connecting frame (52) moves closer to the fixed blade plate (2). The synchronous shaft (56) on the side wall of the two adjacent connecting frames (52) retracts on the synchronous rod (55), so that multiple connecting frames (52) move synchronously and move towards the fixed blade plate (2) under the drive of the cylinder (4). S6. The fixed blade (2) cuts the steel pipe. The second rotating source (57) is started, which drives the first rotating shaft (54) connected to the second rotating source (57) to rotate. The first rotating shaft (54) rotates and drives the steel pipe placed in the placement groove (53) to rotate. The side wall of the steel pipe contacts the fixed blade (2), so that the fixed blade (2) cuts the side wall of the rotating steel pipe.

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