Tube cutting system and tube cutting method

Abstract

The present invention belongs to the field of laser cutting technology, and in particular, relates to a pipe cutting system and a pipe cutting method. The pipe cutting method includes controlling the second chuck to move along the first guide rail toward the preset material receiving position of the pipe, and controlling the fork mechanism holding the pipe to move toward the preset material discharge position; controlling the support assembly and the centering mechanism to rise to the first preset height; controlling the fork mechanism to release the pipe so that the pipe is placed on the support assembly and the centering mechanism; controlling the support assembly to descend to the second preset height, and controlling the centering mechanism to center the pipe; controlling the second chuck to drive the pipe to intermittently move along the first guide rail toward the first chuck, and controlling the fork mechanism to move toward the preset material loading position; controlling the first chuck to clamp the pipe, and controlling the cutting head to move from the preset safety height position to the preset cutting position and cut the pipe. The pipe cutting method improves the cutting efficiency and cutting quality of the pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting, and in particular relates to a tube cutting system and a tube cutting method. Background Art

[0002] As a basic infrastructure material, pipes are increasingly used, and the pipes put into use need to be cut from longer original pipes. Moreover, with the continuous advancement of laser cutting technology, the application of laser cutting pipes is becoming more and more widespread. In the related art, the pipe cutting system is usually composed of a cutting head, a chuck and a feeding mechanism. The chuck is used to clamp and convey the pipe, the feeding mechanism is used to convey the pipe into the chuck, and the cutting head is used to cut the pipe; however, the pipe cutting system has poor stability and low cutting accuracy for cutting longer pipes. Moreover, each mechanism of the pipe cutting system works individually and step by step. Due to the individual actions of each mechanism, the pipe cutting system takes a long time to cut and has low cutting efficiency. Summary of the invention

[0003] The embodiments of the present invention solve the technical problems of low cutting efficiency in a pipe cutting system, and provide a pipe cutting system and a pipe cutting method.

[0004] In view of the above problems, an embodiment of the present invention provides a pipe cutting system, comprising:

[0005] Receiving a cutting instruction, controlling the second chuck to move along the first guide rail toward a preset material receiving position of the pipe, and controlling the fork mechanism holding the pipe to move toward a preset material discharge position;

[0006] When the second chuck moves to a preset material receiving position, the support assembly and the centering mechanism are controlled to rise to a first preset height;

[0007] When the shift fork mechanism moves to a preset discharge position, the shift fork mechanism is controlled to release the pipe so that the pipe is placed on the support assembly and the centering mechanism;

[0008] After controlling the second chuck to clamp one end of the pipe, controlling the support assembly to descend to a second preset height, and simultaneously controlling the centering mechanism to center the pipe; wherein the second preset height is smaller than the first preset height;

[0009] Control the second chuck to drive the pipe to intermittently move along the first guide rail toward the first chuck, and control the fork mechanism to move toward a preset loading position;

[0010] After the second chuck moves toward the first chuck by a preset cutting length, the first chuck is made to clamp the pipe, and the cutting head is controlled to move from a preset safety height position to a preset cutting position and cut the pipe.

[0011] Optionally, before receiving the cutting instruction, the method further includes:

[0012] When the length of the tube between the first chuck and the second chuck is less than a preset cutting length, the second chuck is controlled to move along the first guide rail toward the first chuck, and the first chuck and the second chuck are controlled to rotate in the same direction by a first preset angle, and the cutting head is controlled to rise to a preset safety height position;

[0013] When the second chuck moves to fit with the first chuck, the first chuck and the second chuck are controlled to open, so that the pipes in the first chuck and the second chuck that are shorter than the preset cutting length fall into the waste storage space.

[0014] Optionally, controlling the first chuck and the second chuck to open includes:

[0015] The second chuck is controlled to open until it is separated from the tube, and at the same time, the second chuck is controlled to move along the first guide rail until the distance between the second chuck and the first chuck is a preset material dropping distance, and then the first chuck is controlled to open; the preset material dropping distance is greater than or equal to a preset cutting length.

[0016] Optionally, after receiving the cutting instruction, the method further comprises:

[0017] If it is detected in real time that the second chuck moves along the first guide rail toward a preset material receiving position of the pipe, the first chuck and the second chuck are simultaneously controlled to rotate in the same direction by a second preset angle.

[0018] Optionally, controlling the fork mechanism to move toward a preset loading position includes:

[0019] Obtaining the length of the pipe, determining a preset feeding position corresponding to the fork mechanism according to the length of the pipe, and controlling the fork mechanism to move toward the preset feeding position;

[0020] When the shift fork mechanism moves to a preset loading position, the shift fork mechanism is controlled to clamp the pipe.

[0021] Optionally, after receiving the cutting instruction, the method further includes:

[0022] During the movement of the second chuck along the first guide rail, a safety protection program is started; the safety protection program is: controlling the support assembly and the centering mechanism to descend to a preset safety height that does not interfere with the fork mechanism and the second chuck.

[0023] Optionally, after receiving the cutting instruction, the method further includes:

[0024] In the process of the second chuck moving along the first guide rail toward the preset material receiving position of the pipe, real-time detection is performed to determine whether the shift fork mechanism moves to the preset safety position;

[0025] When it is detected in real time that the shift fork mechanism moves to the preset safety position, detecting whether the second chuck moves to the preset material receiving position;

[0026] If the second chuck has moved to the preset material receiving position, continue to control the fork mechanism holding the pipe to move toward the preset material discharge position;

[0027] If the second chuck does not move to the preset material receiving position, the fork mechanism is controlled to stop moving at the preset safety position. Until it is detected that the second chuck has moved to the preset material receiving position, the fork mechanism holding the pipe continues to be controlled to move toward the preset discharge position.

[0028] Another embodiment of the present invention further provides a pipe cutting system, wherein the pipe cutting method described above is applied to the pipe cutting system;

[0029] The pipe cutting system comprises a first chuck, a second chuck, a fixed frame, a support assembly for supporting the pipe, a centering mechanism for centering the pipe, a fork mechanism for conveying the pipe, and a cutting head for cutting the pipe; a first guide rail is provided on the fixed frame; the first chuck and the cutting head are both mounted on one end of the fixed frame; the second chuck is slidably mounted on the first guide rail to drive the pipe to pass through the first chuck and be cut by the cutting head; the support assembly and the centering mechanism are both mounted on the fixed frame;

[0030] When the second chuck drives the tube to intermittently move along the first guide rail, the cutting head cuts the tube, and the shifting fork mechanism moves to a preset clamping position;

[0031] When the second chuck moves along the first guide rail to the preset material receiving position, the shift fork mechanism moves to the preset material loading position at the same time.

[0032] Optionally, the support assembly includes a mobile support mechanism and a swing support mechanism, the mobile support mechanism includes a first drive assembly and a support plate for supporting the pipe, the first drive assembly drives the support plate to move up and down; the swing support mechanism includes a second drive assembly and a support head for supporting the pipe, the second drive assembly drives the support head to move up and down;

[0033] The centering mechanism comprises a third driving assembly and a rotating centering member for centering the pipe, and the third driving assembly drives the rotating centering member to move up and down.

[0034] Optionally, the rotary centering member comprises a centering seat, a first centering column, a second centering column, a first moving block provided with first meshing teeth, and a second moving block provided with second meshing teeth; the first centering column is mounted on the first moving block, the second centering column is mounted on the second moving block, and a centering space for centering the pipe is formed between the first centering column and the second centering column;

[0035] The centering seat is provided with a third guide rail and a fourth guide rail, the first moving block is movably mounted on the third guide rail, the second moving block is movably mounted on the fourth guide rail, and the moving directions of the first moving block and the second moving block are opposite; the output end of the third driving component is connected to the centering seat.

[0036] In the present application, in the process of the second chuck driving the tube to intermittently move along the first guide rail, the cutting head cuts the tube, and the fork mechanism moves to the preset loading position; and in the process of the second chuck moving along the first guide rail toward the preset receiving position of the tube, the fork mechanism holding the tube moves toward the preset unloading position; thus, the two processes of the second chuck moving along the first guide rail and the fork mechanism clamping and conveying the tube are carried out simultaneously without waiting, thereby saving cutting time and improving cutting efficiency. In addition, the support assembly and the centering mechanism can support the tube, and the centering mechanism can also play a technical effect of centering the tube. It avoids the accident of the tube bending during the laser cutting process, thereby improving the accuracy and quality of the tube cutting; and the tube cutting method can be applicable to laser cutting machines, tube sawing machines, etc., and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 A flow chart of a pipe cutting method provided by an embodiment of the present invention;

[0039] Figure 2 for Figure 1Flowchart before step S100;

[0040] Figure 3 for Figure 1 Flow chart of step S100;

[0041] Figure 4 A schematic structural diagram of a pipe cutting system provided by an embodiment of the present invention;

[0042] Figure 5 for Figure 4 A schematic diagram of a portion of the structure of a support assembly of a pipe cutting system shown;

[0043] Figure 6 for Figure 5 A partial structural schematic diagram of a mobile support mechanism of a pipe cutting system shown;

[0044] Figure 7 yes Figure 6 A partial enlarged view of the middle A;

[0045] Figure 8 for Figure 4 Schematic diagram of the structure of the centering mechanism of the pipe cutting system shown.

[0046] The reference numerals in the specification are as follows:

[0047] 1. First chuck; 2. Second chuck; 3. Support assembly; 31. Mobile support mechanism; 311. First drive assembly; 3111. First drive member; 3112. Connecting rod; 3113. Cylinder; 3114. Second guide rail; 3115. Slider; 31151. Inclined surface; 312. Support plate; 32. Swing support mechanism; 321. Second drive assembly; 3211. Second drive member; 3212. Rotating shaft; 3213. Swing arm; 321 4. Fixed seat; 322. Support head; 3221. Adapter; 3222. First roller; 3223. Clamping rod; 4. Centering mechanism; 41. Third driving assembly; 42. Rotating centering member; 421. Centering seat; 4211. Third guide rail; 4212. Fourth guide rail; 422. First centering column; 423. Second centering column; 424. First moving block; 5. Fixed frame; 51. First guide rail; 6. Fork mechanism; 7. Cutting head; 8. Pipe. DETAILED DESCRIPTION

[0048] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", and "middle" are based on the directions or positional relationships shown in the accompanying drawings and are only used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation of the present invention.

[0050] like Figure 1 As shown, an embodiment of the present invention provides a pipe cutting method, comprising:

[0051] S100, receiving a cutting instruction, controlling the second chuck 2 to move along the first guide rail 51 toward the preset material receiving position of the tube 8, and controlling the fork mechanism 6 holding the tube 8 to move toward the preset material discharge position; it can be understood that in the process of the second chuck 2 retreating along the first guide rail 51 to the preset material receiving position, the fork mechanism 6 transports the uncut tube 8 to the preset material discharge position, thereby saving the cutting time of the tube cutting method and improving the cutting efficiency. Furthermore, the preset material receiving position is: the position where the second chuck 2 can clamp the tube 8 placed on the support assembly 3; the preset material discharge position is: the position where the fork mechanism 6 can place the clamped tube 8 on the support assembly 3 and the centering mechanism 4.

[0052] In one embodiment, after receiving the cutting instruction, the method includes:

[0053] If it is detected in real time that the second chuck 2 moves along the first guide rail 51 toward the preset material receiving position of the tube 8, the first chuck 1 and the second chuck 2 are simultaneously controlled to rotate in the same direction by a second preset angle. It can be understood that the second preset angle can be designed according to actual needs, such as being set to 360 degrees, 720 degrees, etc. Further, the first chuck 1 and the second chuck 2 are both rotated 720 degrees, which can get rid of the waste chips remaining in the first chuck 1 and the second chuck 2, thereby ensuring the cleanliness of the first chuck 1 and the second chuck 2, avoiding the waste chips in the first chuck 1 and the second chuck 2 from damaging the tube 8, thereby further improving the cutting quality of the tube 8.

[0054] S200. When the second chuck 2 moves to the preset material receiving position, the support assembly 3 and the centering mechanism 4 are controlled to rise to a first preset height. It can be understood that the first preset height is: the height at which the support assembly 3 and the centering mechanism 4 can support the pipe 8.

[0055] S300. When the fork mechanism 6 moves to the preset discharge position, the fork mechanism 6 is controlled to release the pipe 8 so that the pipe 8 is placed on the support assembly 3 and the centering mechanism 4. It can be understood that when the support assembly 3 and the centering mechanism 4 rise to a first preset height and when the fork mechanism 6 moves to the preset discharge position, the fork mechanism 6 releases the pipe 8, and the pipe 8 will automatically fall on the support assembly 3 and the centering mechanism 4 and be supported by the support assembly 3 and the centering mechanism 4.

[0056] S400, after controlling the second chuck 2 to clamp one end of the tube 8, controlling the support assembly 3 to descend to a second preset height, and simultaneously controlling the centering mechanism 4 to center the tube 8; wherein, the second preset height is less than the first preset height; it can be understood that after the second chuck 2 clamps one end of the tube 8, the support assembly 3 is driven to descend, thereby avoiding interference between the second chuck 2 and the support assembly 3 during the movement of the second chuck 2 on the first guide rail 51, and the centering mechanism 4 and the second chuck 2 play a role in supporting the tube 8, and the centering mechanism 4 can ensure that the tube 8 is in a centered state (that is, the phenomenon of bending of the tube 8 is avoided) during the transportation of the tube 8 by the second chuck 2; the second preset height is the position height at which the second chuck 2 does not interfere with the support assembly 3 during the movement of the second chuck 2 along the first guide rail 51.

[0057] S500, control the second chuck 2 to drive the pipe 8 to intermittently move along the first guide rail 51 toward the first chuck 1, and control the fork mechanism 6 to move toward the preset loading position; it can be understood that in the process of the second chuck 2 driving the pipe 8 to be cut by the cutting head 7, the fork mechanism 6 retreats to the preset loading position, and the fork mechanism 6 can re-clamp the uncut pipe 8 at the preset loading position, thereby saving the cutting time of the pipe cutting method and improving the cutting efficiency. Further, the preset loading position is the position where the fork mechanism 6 can clamp the new pipe 8, that is, the fork mechanism 6 moves between the preset loading position and the preset discharge position.

[0058] In one embodiment, controlling the fork mechanism 6 to move toward a preset loading position includes:

[0059] The length of the tube 8 is obtained, and the preset feeding position corresponding to the fork mechanism 6 is determined according to the length of the tube 8, and the fork mechanism 6 is controlled to move toward the preset feeding position; it can be understood that the length of the tube 8 can be obtained according to the length measuring mechanism, etc., and the fork mechanism 6 can be accurately moved to the preset feeding position according to the length of the tube 8. At the preset feeding position, the fork mechanism 6 can stably clamp the tube 8. Further, the preset feeding position includes the distance of the fork mechanism 6 retreating and the distance between two adjacent forks.

[0060] When the fork mechanism 6 moves to the preset feeding position, the fork mechanism 6 is controlled to clamp the pipe 8. It can be understood that at the preset feeding position, the fork mechanism 6 can clamp the pipe 8 stably.

[0061] S600, after the second chuck 2 moves toward the first chuck 1 by a preset cutting length, the first chuck 1 is controlled to clamp the pipe 8, and the cutting head 7 is controlled to move from a preset safety height position to a preset cutting position and cut the pipe 8. It can be understood that during the intermittent movement of the second chuck 2 along the first guide rail 51, after the second chuck 2 moves toward the first chuck 1 by a preset cutting length, the first chuck 1 clamps the end of the pipe 8 away from the second chuck 2, and the cutting head 7 cuts the pipe 8. It can be understood that the cutting head 7 cuts the pipe 8 into small pieces of pipe 8 of a predicted cutting length, and the preset cutting length is the length of the cut pipe 8, which can be set according to actual needs.

[0062] It can be understood that the height of the cutting head 7 at the preset cutting position is lower than the height at the preset height safety position, and the preset cutting position is the position where the cutting head 7 cuts the pipe 8 .

[0063] In the present application, in the process of the second chuck 2 driving the tube 8 to intermittently move along the first guide rail 51, the cutting head 7 cuts the tube 8, and the fork mechanism 6 moves to the preset loading position; and in the process of the second chuck 2 moving along the first guide rail 51 toward the preset receiving position of the tube 8, the fork mechanism 6 clamping the tube 8 moves toward the preset discharge position; thus, the two processes of the second chuck 2 moving along the first guide rail 51 and the fork mechanism 6 clamping and conveying the tube 8 are carried out simultaneously without waiting, thereby saving cutting time and improving cutting efficiency. In addition, the support assembly 3 and the centering mechanism 4 can support the tube 8, and the centering mechanism 4 can also play a technical effect of centering the tube 8. It avoids the accident of the tube 8 bending during the laser cutting of the tube 8, thereby improving the cutting accuracy and quality of the tube 8; and the tube cutting method can be applied to laser cutting machines, tube saws, etc., and has a wide range of applications.

[0064] In one embodiment, if Figure 2 As shown, before receiving the cutting instruction (that is, before step S100), the process also includes:

[0065] S110, when the length of the tube 8 between the first chuck 1 and the second chuck 2 is less than the preset cutting length, the second chuck 2 is controlled to move toward the first chuck 1 along the first guide rail 51, and the first chuck 1 and the second chuck 2 are controlled to rotate in the same direction by a first preset angle, and the cutting head 7 is controlled to rise to a preset safety height position; it can be understood that the first preset angle can be set according to actual needs, such as 90 degrees, 180 degrees, etc.; specifically, when the second chuck 2 drives the tube 8 to be cut and the tube 8 between the second chuck 2 and the first chuck 1 does not meet the required cutting length, there is still uncut waste in the second chuck 2; at this time, the second chuck 2 continues to move toward the first chuck 1, and the first chuck 1 and the second chuck 2 are both rotated by the first preset angle, so that the first chuck 1 and the second chuck 2 both reach the angle of blanking, and the cutting head 7 rises to a preset safety height to ensure that the first chuck 1 and the second chuck 2 will not interfere with the cutting head 7 during the rotation process. Furthermore, the preset high-safety position is a position where the cutting head 7 does not interfere with the rotating first chuck 1 and the second chuck 2 .

[0066] Furthermore, in step S100, the second chuck 2 moves along the first guide rail 51 toward the first chuck 1, the first chuck 1 and the second chuck 2 are both rotated in the same direction by a first preset angle, and the cutting head 7 rises to a preset safety height position, and the three are performed synchronously, thereby further improving the cutting efficiency of the pipe 8.

[0067] S120, when the second chuck 2 moves to fit with the first chuck 1, the first chuck 1 and the second chuck 2 are controlled to open, so that the tube 8 less than the preset cutting length in the first chuck 1 and the second chuck 2 falls into the waste storage space. After the first chuck 1 and the second chuck 2 are both opened, the tube 8 less than the preset cutting length clamped by the first chuck 1 and the second chuck 2 will fall into the waste storage space, thereby ensuring that the first chuck 1 and the second chuck 2 can re-clamp the uncut new tube 8.

[0068] In one embodiment, the controlling the first chuck 1 and the second chuck 2 to open (ie, step S120) includes:

[0069] The second chuck 2 is controlled to open until it is separated from the pipe 8, and at the same time, the second chuck 2 is controlled to move along the first guide rail 51 until the distance between the second chuck 2 and the first chuck 1 is the preset material drop distance. It can be understood that the second chuck 2 is first controlled to open gradually, and at the same time, the second chuck 2 is controlled to move toward one end away from the first chuck 1. When the second chuck 2 is opened to separate from the surface of the pipe 8, and the second chuck 2 moves to the preset material drop distance between the first chuck 1 and the first chuck 1, the first chuck 1 is opened, so that in the process of opening the first chuck 1, the pipe 8 clamped by the first chuck 1 that is less than the preset cutting length will tilt toward one end of the second chuck 2, and the pipe 8 that is less than the preset cutting length will accurately fall into the waste storage space; the phenomenon of the first chuck 1 and the second chuck 2 being stuck when the pipe 8 falls irregularly when the first chuck 1 and the second chuck 2 are opened at the same time is avoided.

[0070] Furthermore, the preset material dropping distance is the distance between the first chuck 1 and the second chuck 2 when the tube with a length clamped by the first chuck 1 less than the preset cutting length can be accurately dropped into the waste storage space. Preferably, the preset material dropping distance is greater than or equal to the preset cutting length.

[0071] In one embodiment, after receiving the cutting instruction, the method further includes:

[0072] During the movement of the second chuck 2 along the first guide rail 51, a safety protection program is started; the safety protection program is: controlling the support assembly 3 and the centering mechanism 4 to descend to a preset safety height that does not interfere with the fork mechanism 6 and the second chuck 2. It can be understood that the process of the second chuck 2 moving along the first guide rail 51 includes: the second chuck 2 moves along the first guide rail 51 toward the preset material receiving position of the pipe 8, and the second chuck 2 drives the pipe 8 to move intermittently along the first guide rail 51 toward the first chuck 1. Furthermore, the safety protection program can ensure that the support assembly 3 and the centering mechanism 4 do not interfere with the fork mechanism 6 and the second chuck 2, thereby ensuring the synchronous operation of the pipe 8 cutting system while improving its safety.

[0073] Further, the preset safety height is a height at which the support assembly 3 and the centering mechanism 4 do not interfere with the second chuck, which can be set according to actual needs. Further, when the support assembly 3 and the centering mechanism 4 are lowered to the preset safety height, the height at which the support assembly 3 is lowered and the height at which the centering mechanism 4 is lowered may be equal or unequal.

[0074] In one embodiment, if Figure 3As shown, after receiving the cutting instruction, the method further includes:

[0075] S130. During the movement of the second chuck 2 along the first guide rail 51 toward the preset material receiving position of the tube 8, it is detected in real time whether the fork mechanism 6 moves to the preset safety position; it can be understood that the preset safety position is an installation position point of the fork mechanism 6 on the path toward the second chuck 2. In the preset safety position, the fork mechanism 6 clamping the tube 8 does not interfere with the second chuck 2.

[0076] S140. When it is detected in real time that the fork mechanism 6 moves to the preset safety position, detect whether the second chuck 2 moves to the preset material receiving position; it can be understood that when the second chuck 2 moves to the preset material receiving position, the fork mechanism 6 holding the tube 8 will not interfere with the second chuck 2; that is, when the second chuck 2 moves to the preset material receiving position, the distance between the second chuck 2 and the first chuck 1 is greater than the length of the tube 8 (uncut new tube 8).

[0077] S150. If the second chuck 2 has moved to the preset material receiving position, continue to control the fork mechanism 6 that clamps the tube 8 to move toward the center line between the first chuck 1 and the second chuck 2; it can be understood that when the fork mechanism 6 moves to the preset safety position and the second chuck 2 has moved to the preset material receiving position, the fork mechanism 6 can drive the tube 8 to continue to move toward the preset discharge position without interfering with the second chuck 2.

[0078] S160, if the second chuck 2 has not moved to the preset material receiving position, control the fork mechanism 6 to stop moving at the preset safety position, until it is detected that the second chuck 2 has moved to the preset material receiving position, and continue to control the fork mechanism 6 holding the pipe 8 to move toward the preset material discharge position. It can be understood that when the fork mechanism 6 moves to the preset safety position, and the second chuck 2 has not moved to the preset material receiving position, if the fork mechanism 6 continues to move toward the preset material discharge position, the second chuck 2 will interfere with the fork mechanism 6 holding the pipe 8. At this time, it is necessary to control the fork mechanism 6 to stop moving at the preset safety position, and when it is detected that the second chuck 2 has moved to the preset material receiving position, continue to control the fork mechanism 6 holding the pipe 8 to move toward the preset material discharge position, thereby avoiding the problem of interference between the fork mechanism 6 holding the pipe 8 and the second chuck 2, and further improving the safety of cutting the pipe 8.

[0079] The present invention also provides a pipe cutting system, and the pipe cutting method is applied to the pipe cutting system;

[0080] The pipe cutting system includes a first chuck 1, a second chuck 2, a fixed frame 5, a support assembly 3 for supporting the pipe 8, a centering mechanism 4 for centering the pipe 8, a fork mechanism 6 for conveying the pipe 8, and a cutting head 7 for cutting the pipe 8; a first guide rail 51 is provided on the fixed frame 5; the first chuck 1 and the cutting head 7 are both installed at one end of the fixed frame 5; the second chuck 2 is slidably installed on the first guide rail 51 to drive the pipe 8 to pass through the first chuck 1 and be cut by the cutting head 7; the support assembly 3 and the centering mechanism 4 are both installed on the fixed frame 5; it can be understood that during the process of cutting the pipe 8, the first chuck 1 is fixed, the second chuck 2 moves along the first guide rail 51, and conveys the pipe 8 to the first chuck 1, and after being clamped by the first chuck 1, it is cut by the cutting head 7. The support assembly 3 can support the pipe 8 conveyed by the fork mechanism 6, and the centering mechanism 4 can automatically center the pipe 8 between the first chuck 1 and the second chuck 2 to prevent the pipe 8 from being bent due to its long length.

[0081] In the process that the second chuck 2 drives the tube 8 to move intermittently along the first guide rail 51, the cutting head 7 cuts the tube 8, and the fork mechanism 6 moves to the preset clamping position; it can be understood that in the process that the second chuck 2 drives the tube 8 to be cut by the cutting head 7, after the second chuck 2 drives the tube 8 to move a preset length, the first chuck 1 clamps the tube 8, and the cutting head 7 cuts the tube 8 until the tube 8 is completely cut. In the process that the second chuck 2 drives the tube 8 to move until the tube 8 is completely cut, the fork mechanism 6 retreats to the preset clamping position and re-clamps the tube 8.

[0082] During the process of the second chuck 2 moving along the first guide rail 51 to the preset material receiving position, the shifting fork mechanism 6 simultaneously moves to the preset material loading position. It can be understood that after the cutting of the tube 8 is completed, during the process of the second chuck 2 moving along the first guide rail 51 to the preset material loading position for re-clamping, the shifting mechanism clamps the new tube 8 and conveys it between the first chuck 1 and the second chuck 2, so that the second chuck 2 can re-clamp the uncut tube 8 without waiting.

[0083] Preferably, the fixed frame 5 is also provided with a waste storage space (not shown) for storing waste. It can be understood that the waste storage space is located at one end close to the first chuck 1, and the waste storage space can store waste, waste chips, etc., thereby ensuring the cleanliness of the pipe cutting system.

[0084] In the present invention, the support assembly 3 can be used to support the pipe 8, the fork mechanism 6 can be used to transport the pipe 8, the cutting head 7 can be used to cut the pipe 8, and the second chuck 2 can drive the pipe 8 to pass through the first chuck 1 and be cut by the cutting head 7; thus, the pipe cutting system can complete the automatic cutting of the pipe 8 while also completing the automatic loading and unloading of the pipe 8, thereby improving the cutting efficiency of the pipe 8. In addition, the centering mechanism 4 can be used to center the pipe 8. During the process of the second chuck 2 transporting the pipe 8, the centering mechanism 4 can prevent the pipe 8 from bending due to excessive length, thereby improving the cutting accuracy and cutting quality of the pipe 8. In addition, in the process of the second chuck 2 driving the tube 8 to intermittently move along the first guide rail 51, the cutting head 7 cuts the tube 8, and the fork mechanism 6 moves to the preset clamping position; and in the process of the second chuck 2 moving along the first guide rail 51 to the preset material receiving position, the fork mechanism 6 simultaneously moves to the preset loading position; thus, the two processes of the second chuck 2 of the tube cutting system moving along the first guide rail 51 and the fork mechanism 6 clamping the tube 8 are carried out simultaneously without waiting, thereby saving cutting time and improving cutting efficiency.

[0085] In one embodiment, if Figures 5 to 8 As shown, the support assembly 3 includes a movable support mechanism 31 and a swing support mechanism 32, the movable support mechanism 31 includes a first drive assembly 311 and a support plate 312 for supporting the pipe 8, the first drive assembly 311 drives the support plate 312 to move up and down; the swing support mechanism 32 includes a second drive assembly 321 and a support head 322 for supporting the pipe 8, the second drive assembly 321 drives the support head 322 to move up and down; it can be understood that the swing support mechanism 32 can be set to multiple according to actual needs, and each of the swing support mechanisms 32 is connected to a support plate 312. Specifically, when the fork mechanism 6 transports the tube 8 between the first chuck 1 and the second chuck 2, the tube 8 is first stored on the support head 322 and the support plate 312 for support. Then, after the second chuck 2 clamps one end of the tube 8, the first drive component 311 drives the support plate 312 to descend, and at the same time, the second drive component 321 drives the support head 322 to descend. Therefore, during the movement of the second chuck 2 along the first guide rail 51, the second chuck 2 will not interfere with the support plate 312 and the support head 322.

[0086] The centering mechanism 4 includes a third driving assembly 41 and a rotating centering member 42 for centering the pipe 8, and the third driving assembly 41 drives the rotating centering member 42 to move up and down. It can be understood that in the process of the support plate 312 and the support head 322 supporting the pipe 8, the rotating centering member 42 can complete the work of automatically centering the pipe 8, and prevent the risk of bending of the pipe 8 in the process of the second chuck 2 driving the pipe 8 to move.

[0087] In the present invention, the first driving assembly 311 drives the support plate 312 to move up and down, so that the support plate 312 supports the pipe 8; the second driving assembly 321 drives the support head 322 to move up and down, so that the support head 322 supports the pipe 8; the third driving assembly 41 drives the rotating centering member 42 to move up and down, so that the rotating centering member 42 centers the pipe 8. In the present invention, the pipe cutting system can complete the auxiliary support and automatic centering of the pipe 8, improve the cutting quality of the pipe 8, and has a compact structure and occupies a small space.

[0088] In one embodiment, if Figure 5 As shown, the second driving component 321 includes a second driving member 3211, a rotating shaft 3212, a swing arm rod 3213 and a fixed seat 3214 installed on the fixed frame 5; one end of the swing arm rod 3213 is rotatably installed on the fixed seat 3214 through the rotating shaft 3212, and the support head 322 is installed on the end of the swing arm rod 3213 away from the rotating shaft 3212; the second driving member 3211 is installed on the fixed frame 5, and the output end of the second driving member 3211 is rotatably connected to the swing arm rod 3213. It can be understood that the second driving member 3211 includes but is not limited to driving members such as pneumatic cylinders, hydraulic cylinders, linear motors, and screw nut mechanisms; specifically, the second driving member 3211 drives the swing arm 3213 to rotate around the rotating shaft 3212, thereby driving the support head 322 to move up and down, and then the support head 322 can support pipes 8 of different sizes, and avoid the risk of interference between the support head 322 and the fork mechanism 6 and the second chuck 2 during the movement of the fork mechanism 6 and the second chuck 2. In the present invention, the swing support mechanism 32 has a simple structure, is easy to control, and has a low manufacturing cost.

[0089] In one embodiment, if Figure 6 and Figure 7As shown, the first driving component 311 includes a first driving member 3111, a connecting rod 3112, a cylinder 3113, a second guide rail 3114 and a slider 3115 provided with a slope 31151; the second guide rail 3114 is installed on the fixed frame 5, and the slider 3115 is slidably installed on the second guide rail 3114; it can be understood that the first driving member 3111 includes but is not limited to driving members such as pneumatic cylinders, hydraulic cylinders, linear motors, and screw nut mechanisms; further, the pipe cutting system includes a plurality of the swing support mechanisms 32 arranged at intervals, and each of the swing support mechanisms 32 is correspondingly provided with a support plate 312.

[0090] The support plate 312 is mounted on the slider 3115; the cylinder 3113 is mounted on the swing arm 3213, and the slider 3115 abuts against the cylinder 3113 through the inclined surface 31151; the first driving member 3111 is mounted on the fixed frame 5, and drives the support plate 312 to move up and down through the slider 3115 sliding along the second guide rail 3114. Specifically, during the process of the slider 3115 driven by the first driving member 3111 to move along the second guide rail 3114, the inclined surface 31151 below the slider 3115 will move along the cylinder 3113, thereby driving the support plate 312 mounted above the slider 3115 to move up and down, and the same first driving member 3111 can drive multiple support plates 312 to move up and down at the same time, thereby reducing the manufacturing cost of the pipe cutting system, making the structure of the pipe cutting system more compact and occupying less space.

[0091] In one embodiment, if Figure 5 As shown, the support head 322 includes an adapter 3221 and first rollers 3222 and clamping rods 3223 installed at opposite ends of the adapter 3221; the adapter 3221 is rotatably installed on the second driving assembly 321. It can be understood that the clamping rod 3223 can clamp a square pipe 8, and the first roller 3222 can support a cylindrical pipe 8, so that the pipe cutting system can complete the cutting work of pipes 8 of different shapes, thereby improving the applicability of the pipe cutting system.

[0092] In one embodiment, if Figure 8As shown, the rotating centering member 42 includes a centering seat 421, a first centering column 422, a second centering column 423, a first moving block 424 provided with first meshing teeth, and a second moving block (not shown) provided with second meshing teeth (not shown); the first centering column 422 is installed on the first moving block 424, the second centering column 423 is installed on the second moving block, and a centering space for centering the pipe 8 is formed between the first centering column 422 and the second centering column 423; it can be understood that the centering mechanism 4 is located in the middle position of the first guide rail 51, and in the process of the second chuck 2 driving the pipe 8 to move, the pipe 8 is located in the centering space and drives the first centering column 422 and the second centering column 423 to rotate.

[0093] The centering seat 421 is provided with a third guide rail 4211 and a fourth guide rail 4212, the first moving block 424 is movably mounted on the third guide rail 4211, the second moving block is movably mounted on the fourth guide rail 4212, and the first moving block 424 moves in opposite directions to the second moving block; the output end of the third driving assembly 41 is connected to the centering seat 421. It can be understood that the third driving assembly 41 can drive the entire rotating centering member 42 to move up and down, and the first moving block 424 moves along the third guide rail 4211, and the second moving block moves along the fourth guide rail 4212, thereby driving the first centering column 422 and the second centering column 423 to move toward or in the opposite direction, so that the first centering column 422 and the second centering column 423 can complete the centering and clamping work of pipes 8 of different sizes. In the present invention, the centering structure has a simple structure and low manufacturing cost.

[0094] In one embodiment, if Figure 4 As shown, the centering mechanism 4 also includes a fourth driving member (not shown) and a screw (not shown) connected to the output end of the fourth driving member; the screw is provided with a first thread segment (not shown) meshing with the first meshing tooth, and a second thread segment (not shown) meshing with the second meshing tooth; the thread rotation direction of the first thread segment is opposite to the spiral rotation direction of the second thread segment; the first moving block 424 and the second moving block move in opposite directions through the screw. Specifically, during the process of the fourth driving member driving the screw to rotate, since the thread rotation direction of the first thread segment and the thread rotation direction of the second thread segment are opposite, the first moving block 424 and the second moving block can be driven to move in opposite directions, thereby completing the automatic clamping and centering of the pipe 8. In the present invention, the centering mechanism 4 has a simple structure, convenient control, and low manufacturing cost.

[0095] In one embodiment, if Figure 4As shown, the fork mechanism 6 includes a conveying rod, a fastener, and a mechanical clamp with a clamping space; the clamp arm is installed on the conveying rod, the fastener is installed on the mechanical clamp and is used to adjust the size of the clamping space; the pipe 8 is clamped in the clamping space. In this embodiment, the mechanical clamp has a simple structure, low manufacturing cost, and is easy to operate.

[0096] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe cutting method, the pipe cutting method is applied to a pipe cutting system, characterized in that: The pipe cutting system comprises a first chuck, a second chuck, a fixed frame, a support assembly for supporting the pipe, a centering mechanism for centering the pipe, a fork mechanism for conveying the pipe, and a cutting head for cutting the pipe; a first guide rail is provided on the fixed frame; the first chuck and the cutting head are both mounted at one end of the fixed frame; the second chuck is slidably mounted on the first guide rail to drive the pipe to pass through the first chuck and be cut by the cutting head; The support assembly and the centering mechanism are both mounted on the fixed frame; The pipe cutting method comprises: Receiving a cutting instruction, controlling the second chuck to move along the first guide rail toward a preset material receiving position of the pipe, and controlling the fork mechanism holding the pipe to move toward a preset material discharge position; When the second chuck moves to a preset material receiving position, the support assembly and the centering mechanism are controlled to rise to a first preset height; When the shift fork mechanism moves to a preset discharge position, the shift fork mechanism is controlled to release the pipe so that the pipe is placed on the support assembly and the centering mechanism; After controlling the second chuck to clamp one end of the pipe, controlling the support assembly to descend to a second preset height, and simultaneously controlling the centering mechanism to center the pipe; wherein the second preset height is smaller than the first preset height; Control the second chuck to drive the pipe to intermittently move along the first guide rail toward the first chuck, and control the fork mechanism to move toward a preset loading position; After the second chuck moves toward the first chuck by a preset cutting length, the first chuck is made to clamp the pipe, and the cutting head is controlled to move from a preset safety height position to a preset cutting position and cut the pipe.

2. The pipe cutting method according to claim 1, characterized in that: Before receiving the cutting instruction, the method further comprises: When the length of the tube between the first chuck and the second chuck is less than a preset cutting length, the second chuck is controlled to move along the first guide rail toward the first chuck, and the first chuck and the second chuck are controlled to rotate in the same direction by a first preset angle, and the cutting head is controlled to rise to a preset safety height position; When the second chuck moves to fit with the first chuck, the first chuck and the second chuck are controlled to open, so that the pipes in the first chuck and the second chuck that are shorter than the preset cutting length fall into the waste storage space.

3. The pipe cutting method according to claim 2, characterized in that: The controlling the first chuck and the second chuck to open comprises: The second chuck is controlled to open until it is separated from the tube, and at the same time, the second chuck is controlled to move along the first guide rail until the distance between the second chuck and the first chuck is a preset material dropping distance, and then the first chuck is controlled to open; the preset material dropping distance is greater than or equal to a preset cutting length.

4. The pipe cutting method according to claim 2, characterized in that: After receiving the cutting instruction, the method comprises: If it is detected in real time that the second chuck moves along the first guide rail toward a preset material receiving position of the pipe, the first chuck and the second chuck are simultaneously controlled to rotate in the same direction by a second preset angle.

5. The pipe cutting method according to claim 1, characterized in that: The controlling the shift fork mechanism to move toward a preset loading position comprises: Obtaining the length of the pipe, determining a preset feeding position corresponding to the fork mechanism according to the length of the pipe, and controlling the fork mechanism to move toward the preset feeding position; When the shift fork mechanism moves to a preset loading position, the shift fork mechanism is controlled to clamp the pipe.

6. The pipe cutting method according to claim 1, characterized in that: After receiving the cutting instruction, the method further includes: During the movement of the second chuck along the first guide rail, a safety protection program is started; the safety protection program is: controlling the support assembly and the centering mechanism to descend to a preset safety height that does not interfere with the fork mechanism and the second chuck.

7. The pipe cutting method according to claim 1, characterized in that: After receiving the cutting instruction, the method further includes: In the process of the second chuck moving along the first guide rail toward the preset material receiving position of the pipe, real-time detection is performed to determine whether the shift fork mechanism moves to the preset safety position; When it is detected in real time that the shift fork mechanism moves to the preset safety position, detecting whether the second chuck moves to the preset material receiving position; If the second chuck has moved to the preset material receiving position, continue to control the fork mechanism holding the pipe to move toward the preset material discharge position; If the second chuck does not move to the preset material receiving position, the fork mechanism is controlled to stop moving at the preset safety position. Until it is detected that the second chuck has moved to the preset material receiving position, the fork mechanism holding the pipe continues to be controlled to move toward the preset discharge position.

8. A pipe cutting system, characterized in that: The pipe cutting method according to any one of claims 1 to 7 is applied to the pipe cutting system; When the second chuck drives the tube to intermittently move along the first guide rail, the cutting head cuts the tube, and the shifting fork mechanism moves to a preset clamping position; When the second chuck moves along the first guide rail to the preset material receiving position, the shift fork mechanism moves to the preset material loading position at the same time.

9. The pipe cutting system according to claim 8, characterized in that: The support assembly includes a mobile support mechanism and a swing support mechanism, the mobile support mechanism includes a first drive assembly and a support plate for supporting the pipe, the first drive assembly drives the support plate to move up and down; the swing support mechanism includes a second drive assembly and a support head for supporting the pipe, the second drive assembly drives the support head to move up and down; The centering mechanism comprises a third driving assembly and a rotating centering member for centering the pipe, and the third driving assembly drives the rotating centering member to move up and down.

10. The pipe cutting system according to claim 9, characterized in that: The rotary centering member comprises a centering seat, a first centering column, a second centering column, a first moving block provided with first meshing teeth, and a second moving block provided with second meshing teeth; the first centering column is mounted on the first moving block, the second centering column is mounted on the second moving block, and a centering space for centering the pipe is formed between the first centering column and the second centering column; The centering seat is provided with a third guide rail and a fourth guide rail, the first moving block is movably mounted on the third guide rail, the second moving block is movably mounted on the fourth guide rail, and the moving directions of the first moving block and the second moving block are opposite; the output end of the third driving component is connected to the centering seat.

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