Arc starting plate cutting equipment and cutting method

Abstract

The present invention provides an arc starter plate cutting device and a cutting method, which relate to the technical field of cutting devices and solve the technical problem of relatively large potential safety hazards in the prior art when manually holding a cutting machine to cut the arc starter plates at the starting and ending points of the straight seam welding of the water tank inner liner. The cutting device includes a bracket, a cutting mechanism, and a supporting and rotating mechanism. Among them, the cutting mechanism and the supporting and rotating mechanism are supported on the bracket. The supporting and rotating mechanism is used to clamp both ends of the workpiece to be processed and can drive the workpiece to be processed to rotate; the position of the cutting head on the cutting mechanism is adjustable; when the cutting head is adjusted to a predetermined position, rotating the workpiece to be processed on the supporting and rotating mechanism can cut the arc starter plate on the workpiece to be processed. The present invention is used to realize the cutting of the arc starter plates of the straight seam welding of the water tank inner liner, improve the accuracy and stability of cutting, and improve safety.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting equipment, and more particularly to an arc striking plate cutting device and a cutting method. Background Art

[0002] In order to ensure the welding quality at the starting and ending arcs of the straight seam welding of the water tank inner liner, arc striking plates are added at both ends of the straight seam welding. After the straight seam welding is completed, the arc striking plates must be cut before entering the subsequent process production. At present, the arc striking plates at the starting and ending arcs of the straight seam welding of the water tank inner liner are cut by a hand-held cutting machine. During the production process, if there are problems such as uneven cutting (under-cutting, over-cutting), or missed cutting, the end of the inner liner will be deformed during the subsequent flaring process of the water tank inner liner, which may seriously lead to equipment failures and reduce the service life of the equipment; moreover, the manual cutting of the arc striking plates generates noise and dust, and the on-site working environment is poor; the cutting discs are consumed a lot, resulting in high cost consumption; and employees operating the cutting machine by hand for a long time have great safety hazards. Summary of the Invention

[0003] The purpose of the present invention is to provide an arc striking plate cutting device and a cutting method, which solve the technical problem of relatively large safety hazards in the prior art when using a hand-held cutting machine to cut the arc striking plates at the starting and ending arcs of the straight seam welding of the water tank inner liner. The preferred technical solutions provided by the present invention can produce many technical effects as described below.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] An arc striking plate cutting device provided by the present invention includes a bracket, a cutting mechanism, and a support and rotation mechanism. Among them, the cutting mechanism and the support and rotation mechanism are supported on the bracket. The support and rotation mechanism is used to clamp both ends of the workpiece to be processed and can drive the workpiece to be processed to rotate; the position of the cutting head on the cutting mechanism is adjustable; when the cutting head is adjusted to a predetermined position, rotating the workpiece on the support and rotation mechanism can cut the arc striking plate on the workpiece.

[0006] Furthermore, the arc striking plate cutting device further includes a power bracket for raising or lowering the workpiece to be processed. The power bracket includes a bracket support plate, and support wheels are arranged on the bracket support plate. Driven by the power device of the power bracket, the workpiece to be processed arranged on the support wheels can be raised to a position where the support and rotation mechanism can clamp the workpiece to be processed, and the support wheels can drive the workpiece to rotate under the drive of the drive device of the power bracket.

[0007] Further, the arc striking plate cutting device further includes a conveying mechanism disposed on the bracket. The conveying mechanism includes a conveying track. The bracket support plate is located between the two conveying tracks. The extending direction of the conveying track is perpendicular to the axial direction of the workpiece to be processed clamped on the support rotating mechanism. A moving bracket is disposed on the conveying track. The moving bracket can drive the workpiece disposed on the moving bracket to move along the conveying track under the drive of the conveying mechanism driving device.

[0008] Further, the upper end surface of the moving bracket is an arc-shaped structure that is high at both ends and low in the middle, and the two workpieces to be processed can be placed on the moving bracket at the same time.

[0009] Further, the arc striking plate cutting device further includes a discharging mechanism disposed on one side of the bracket. The discharging mechanism includes a discharging support plate. The discharging support plate is located between the two conveying tracks. When the moving bracket drives the processed workpiece to move along the conveying track to above the discharging support plate, the discharging support plate can be lifted upward under the drive of the discharging mechanism driving device to push the processed workpiece out of the moving bracket.

[0010] Further, the arc striking plate cutting device further includes a weld detection device. The weld detection device is connected to the power bracket. The power bracket drives the workpiece to be processed thereon to rotate until the weld position on the workpiece to be processed faces upward and the weld detection device can detect the weld position on the workpiece to be processed.

[0011] Further, the arc striking plate cutting device further includes an electric cross beam. The electric cross beam is supported on the bracket and the extending direction of the electric cross beam is consistent with the axial direction of the workpiece to be processed clamped on the support rotating mechanism. The cutting mechanism is connected to the electric cross beam through a connection driving structure. The position of the cutting head can be adjusted through the electric cross beam and the connection driving structure.

[0012] Further, the cutting head is a fiber laser cutting head.

[0013] A cutting method for cutting an arc striking plate by using the arc striking plate cutting device described above includes the following steps: clamping the workpiece to be processed on the support rotating mechanism; adjusting the cutting mechanism to the cutting position, and rotating the support rotating mechanism to cut the arc striking plate on the workpiece to be processed.

[0014] Further, the cutting method specifically includes the following steps: Step S1: When the cutting mechanism performs arc striking plate cutting on the workpiece supported on the support rotating mechanism, place another workpiece to be processed on the conveying mechanism;

[0015] Step S2: After the workpiece on the support rotation mechanism is processed, the power bracket rises and places the processed workpiece on the conveying mechanism;

[0016] Step S3: The moving bracket on the conveying mechanism moves until the processed workpiece moves above the unloading support plate, and the unprocessed workpiece on the conveying mechanism moves above the bracket support plate;

[0017] Step S4: The power bracket rises to lift the unprocessed workpiece to a preset height and drives the unprocessed workpiece to rotate self - sufficiently, so that the weld seam of the unprocessed workpiece faces upward. The support rotation mechanism clamps the workpiece, adjusts the cutting mechanism to the cutting position, and rotates the support rotation mechanism to cut the arc - striking plate on the workpiece to be processed; the unloading mechanism pushes the processed workpiece out of the power bracket, the moving bracket resets, and repeats to Step S1.

[0018] An arc - striking plate cutting device provided by the present invention can be used for cutting the arc - striking plate of the straight - seam weld of the water tank inner liner. By adjusting the cutting head to a predetermined position and rotating the water tank inner liner clamped on the support rotation mechanism, the arc - striking plate of the straight - seam weld on the water tank inner liner can be cut. It can replace the manual way of cutting the arc - striking plate, avoiding problems such as uneven cutting, missed cutting, and poor on - site working environment during manual cutting, and solving the technical problem of relatively large potential safety hazards in the prior art when manually holding a cutting machine to cut the arc - striking plates at the starting and ending arcs of the straight - seam weld of the water tank inner liner. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the main structure of the arc - striking plate cutting device provided by the embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the arc - striking plate cutting device provided by the embodiment of the present invention.

[0022] In the figure: 1 - support; 2 - cutting mechanism; 21 - cutting head; 3 - support rotation mechanism; 31 - rotating machine head; 311 - active rotating disk; 32 - pneumatic tailstock; 321 - tailstock rotating disk; 4 - power bracket; 41 - bracket support plate; 42 - support wheel; 5 - conveying mechanism; 51 - conveying track; 52 - moving bracket; 6 - unloading mechanism; 61 - unloading support plate; 7 - laser generator; 8 - electric crossbeam; 9 - connection drive structure; 10 - operation box; 11 - protective cover; 12 - control system; 13 - chiller; 14 - water tank inner liner. Detailed implementation manners

[0023] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope protected by the present invention.

[0024] Refer to Figure 1 - Figure 2 , the present invention provides an arc striking plate cutting device, including a support 1, a cutting mechanism 2 and a support rotation mechanism 3. Among them, the cutting mechanism 2 and the support rotation mechanism 3 are supported on the support 1. The support rotation mechanism 3 is used to clamp both ends of the workpiece to be processed and can drive the workpiece to be processed to rotate; the position of the cutting head 21 on the cutting mechanism 2 is adjustable; when the cutting head 21 is adjusted to a predetermined position, rotating the workpiece on the support rotation mechanism 3 can cut the arc striking plate on the workpiece. By using the arc striking plate cutting device provided by the present invention, it can be used for cutting the arc striking plate of the straight seam welding of the water tank inner liner, replacing the manual method, avoiding the situations of uneven cutting and missed cutting during the manual cutting process; avoiding the problems of noise, dust generated by manual cutting of the arc striking plate, poor on-site working environment and avoiding the problem of large potential safety hazards caused by employees holding the cutting machine for a long time.

[0025] As an optional implementation manner of the embodiment of the present invention, the arc striking plate cutting device further includes a power bracket 4 for raising or lowering the workpiece to be processed. The power bracket 4 includes a bracket support plate 41, and a support wheel 42 is arranged on the bracket support plate 41. Driven by the power device of the power bracket 4, the workpiece to be processed arranged on the support wheel 42 can be raised to the position where the support rotation mechanism 3 can clamp the workpiece to be processed, and the support wheel 42 can drive the workpiece to be processed to rotate self-driven under the drive of the drive device of the power bracket 4. Refer to Figure 1, a cylinder structure can be connected below the bracket support plate 41, and the bracket support plate 41 is driven by the cylinder structure to rise or descend vertically. That is, when the bracket support plate 41 drives the water tank inner liner 14 thereon to rise and reach a predetermined position, the support and rotation mechanism 3 can act to clamp and fix the water tank inner liner (at this time, the bracket support plate 41 moves downward under the drive of the cylinder structure). After the arc starting plate on the water tank inner liner 14 is cut, the bracket support plate 41 moves upward to a predetermined height under the drive of the cylinder structure, and the support and rotation mechanism 3 releases the fixation of the water tank inner liner 14. The water tank inner liner with the cut arc starting plate can move downward together with the bracket support plate 14.

[0026] See Figure 1 , for the support wheels 42, the number of support wheels 42 can be four, and the four support wheels 42 can be distributed in a rectangular array. The water tank inner liner 14 can be supported on the four support wheels 42; the support wheels 42 not only play the role of supporting the water tank inner liner 14, but also can be connected to a power device such as a motor. When the support wheels 42 rotate, the water tank inner liner 14 can be driven to rotate self - sufficiently to adjust the position of the arc starting plate on the water tank inner liner 14 so that the position of the arc starting plate is upward, facilitating the cutting process of the arc starting plate.

[0027] As an optional implementation manner of the embodiment of the present invention, see Figure 1 , the arc starting plate cutting device further includes a conveying mechanism 5 arranged on the bracket 1. The conveying mechanism 5 includes a conveying track 51. The bracket support plate 41 is located between the two conveying tracks 51. The extending direction of the conveying track 51 is perpendicular to the axial direction of the workpiece clamped by the support and rotation mechanism 3. A moving bracket 52 is arranged on the conveying track 51. The moving bracket 52 can drive the workpiece arranged on the moving bracket 52 to move along the conveying track 51 under the drive of the driving device of the conveying mechanism 5. See Figure 1 , the positional relationship between the conveying track 51 and the bracket 1 can be seen. It can be seen that the bracket support plate 41 is located between the two conveying tracks 51; a moving bracket 52 is arranged on each conveying track 51. The water tank inner liner 14 can be placed on the two moving brackets 52. The moving bracket 52 can move along the conveying track 51 under the drive of the power structure (the power structure can be an existing driving method, such as a hydraulic mechanism) to drive the water tank inner liner 14 to move.

[0028] As an optional implementation manner of the embodiment of the present invention, see Figure 1 , the upper end surface of the moving bracket 52 is an arc - shaped structure that is high at both ends and low in the middle to limit the position of the water tank inner liner 14 placed on the moving bracket 52, facilitating the stable movement of the water tank inner liner 14 along the conveying track 51, and two workpieces to be processed can be placed on the moving bracket 52 at the same time. Corresponding to the conveying mechanism 5, there can be three workstations. See Figure 1, when the moving bracket 52 is located on the right side of the water tank inner liner 14, a water tank inner liner 14 to be processed can be placed on the moving bracket 52 (the position of the water tank inner liner 14 on the moving bracket 52 at this time can be called the first working position). After the straight-seam welding starting plate of the water tank inner liner 14 supported on the support rotating mechanism 3 is switched, the power bracket 4 drives the water tank inner liner 14 to move downward, and at the same time, the moving bracket 52 moves to the left, so that the water tank inner liner 14 on the power bracket 4 is placed on the moving bracket 52 (the position of the processed water tank inner liner 14 on the moving bracket 52 at this time can be called the second working position). The moving bracket 52 continues to move to the left until the unprocessed water tank inner liner 14 on the moving bracket 52 moves above the bracket support plate 41, and the processed water tank inner liner 14 moves out of the second working position and moves to the left side of the bracket 1 (the position of the processed water tank inner liner 14 on the moving bracket 52 at this time can be called the third working position). The power bracket 4 acts to push the water tank inner liner 14 above it to the position where the support rotating mechanism 3 can clamp the water tank inner liner. After the water tank inner liner 14 in the third working position disengages from the conveying track 51, the moving bracket 52 moves to the right to the initial position. The above processing process is adopted to ensure the continuity of processing and improve the processing efficiency.

[0029] As an optional implementation manner of the embodiment of the present invention, the starting plate cutting device further includes a discharging mechanism 6 provided on one side of the bracket 1. The discharging mechanism includes a discharging support plate 61. The discharging support plate 61 is located between the two conveying tracks 51. When the moving bracket 52 drives the processed workpiece to move along the conveying track 51 to above the discharging support plate 61, the discharging support plate 61 can be lifted upward under the drive of the driving device of the discharging mechanism 6 to push the processed workpiece out of the moving bracket 52. Refer to Figure 1 , Figure 1 shows the position of the discharging support plate 61. A cylinder structure can be connected below the discharging support plate 61. The discharging support plate 61 can be inclined, and the height of the end close to the power bracket 4 is higher than the height of the end far from the power bracket 4. When the water tank inner liner 14 with the starting plate cut moves above the discharging support plate 61 (that is, the water tank inner liner 14 with the starting plate cut is located at the third working position), the discharging support plate 61 moves upward under the drive of the driving device to push the water tank inner liner 14 out of the moving bracket 52, and then the discharging support plate 61 moves downward under the drive of the driving device. For the connection between the discharging support plate 61 and the driving device of the discharging mechanism 6 (at this time, the discharging support plate 61 can be horizontally arranged in the reset state), the telescopic shaft of the discharging support plate 61 and the driving device can be hinged. The height of the telescopic shaft extending upward on the side close to the power bracket 4 is greater than the height of the telescopic shaft extending upward on the side far from the power bracket 4, so that the discharging support plate 61 is inclined, which is convenient for pushing the water tank inner liner 14 at the third working position out of the moving bracket 52.

[0030] As an optional implementation manner of the embodiment of the present invention, the arc starting plate cutting device further includes a weld detection device. The weld detection device is connected to the power bracket 4. The power bracket 4 drives the workpiece to be processed thereon to rotate until the weld position on the workpiece to be processed faces upward and the weld detection device can detect the weld position on the workpiece to be processed. The weld detection device can detect the weld position through the color of the weld (i.e., the infrared detection technology of the metal weld). That is, when the power bracket 4 raises the water tank inner liner 14 to the position where the support rotation mechanism 3 can clamp the water tank inner liner, the weld detection device detects the weld position on the water tank inner liner 14. If the weld on the water tank inner liner 14 is not detected, the support wheel 42 of the power bracket 4 drives the water tank inner liner 14 to rotate self - rotatably until the weld on the water tank inner liner 14 faces upward and the weld detection device detects the weld on the water tank inner liner 14, and then the water tank inner liner 14 stops rotating.

[0031] As an optional implementation manner of the embodiment of the present invention, referring to Figure 1 , the arc starting plate cutting device further includes an electric cross beam 8. The electric cross beam 8 is supported on the bracket 1 and the extending direction of the electric cross beam 8 is consistent with the axial direction of the workpiece to be processed clamped on the support rotation mechanism 3. The cutting mechanism 2 is connected to the electric cross beam 8 through a connecting drive structure 9. The position of the cutting head 21 can be adjusted through the electric cross beam 8 and the connecting drive structure 9. Referring to Figure 1 - Figure 2 , the electric cross beam 8 can drive the connecting drive structure 9 and the cutting mechanism 2 to move, and the moving direction is parallel to the axis direction of the water tank inner liner 14 clamped on the support rotation mechanism 3; in addition, the connecting drive structure 9 can adjust the cutting mechanism 2 to move in the height direction and in the direction perpendicular to the electric cross beam 8, so as to realize the adjustment of the cutting mechanism 2 in the three directions of XYZ to adjust the position of the cutting mechanism 2. For the connecting drive structure 9, a lead screw mechanism can be used to realize the adjustment of the cutting mechanism 2 in the height direction, or other conventional mechanisms can also be used. Similarly, a lead screw structure can be used to realize the adjustment of the cutting mechanism 2 in the direction perpendicular to the electric cross beam 8, or other conventional mechanisms can also be used.

[0032] As an optional implementation manner of the embodiment of the present invention, the cutting head 21 is a fiber laser cutting head 21. The cutting head 21 adopts a Swiss fiber - specific cutting head (equipped with a collimating lens group) and has a stable Z - axis floating function. This cutting head is equipped with an extremely sensitive non - contact sensing device. Under the control of the system, it can realize a very stable Z - axis floating function, eliminating the influence of the unevenness of the plate on the cutting quality; in addition, the laser emitter of the device can adopt a 1000W fiber laser generator; to achieve the accuracy and stability of cutting the arc starting plate.

[0033] As an alternative implementation manner of the embodiment of the present invention, for the support rotation mechanism 3, the support rotation mechanism 3 includes a rotation mechanism 31 and a pneumatic tailstock 32. The rotation mechanism 31 and the pneumatic tailstock 32 are arranged on the track of the bracket 3 and can move towards and away from each other under the drive of a drive device (the drive device can be a cylinder structure or a lead screw mechanism). The rotation mechanism 31 and the pneumatic tailstock 32 can adopt existing structures. The rotation mechanism 31 can include a servo motor, a transmission mechanism, a bearing, etc. The servo motor drives the active rotating disk 311 on the rotation mechanism 31 to rotate. There is a tailstock rotating disk 321 on the pneumatic tailstock 32. The water tank inner liner 14 can be clamped between the active rotating disk 311 and the tailstock rotating disk 321, and the rotation of the active rotating disk 311 can drive the water tank inner liner 14 to rotate.

[0034] As an alternative implementation manner of the embodiment of the present invention, referring to Figure 1 , in order to improve safety, a protective cover 11 can be arranged around the bracket 3.

[0035] The cutting of the water tank inner liner with an arc starting plate also includes an electrical control system. The controller of the electrical control system takes a PLC programmable controller as the core control unit, and the functions of the equipment can be adjusted by modifying the programs and parameters of the control software, making the whole equipment have strong intelligence and flexibility. This controller has manual adjustment and automatic cutting control functions. The cutting speed is digitally displayed and can be steplessly adjusted as needed within the adjustment range.

[0036] The arc starting plate cutting equipment provided by the present invention uses a color touch screen human-machine interface to monitor the entire welding process. When the equipment fails, the equipment can automatically stop and send out an alarm signal, and the fault location is displayed on the human-machine interface. On the operation box 10 of the alarm setter, a sound warning can be issued, and three-color status indicator lights are arranged above the control cabinet, where green indicates the working state, yellow indicates the waiting state, and red indicates a fault.

[0037] The arc starting plate cutting equipment provided by the present invention uses a Swiss special fiber cutting head, an advanced fiber laser, and a controller of an advanced electrical control system to realize the accurate, stable, and safe cutting of the arc starting plate at the starting and ending arcs of the straight seam welding of the water tank inner liner, and realizes that when a fault occurs, the equipment can automatically stop and send out an audible and visual alarm signal, realizing unmanned automatic cutting.

[0038] A cutting method for cutting an arc starting plate by using an arc starting plate cutting equipment includes the following steps: clamping the workpiece to be processed on the support rotation mechanism 3; adjusting the cutting mechanism 2 to the cutting position, and rotating the support rotation mechanism 3 to cut the arc starting plate on the workpiece to be processed.

[0039] As an alternative implementation manner of the embodiment of the present invention, the cutting method specifically includes the following steps:

[0040] In step S1, when the cutting mechanism 2 performs the cutting process of the arc striking plate on the workpiece supported by the support rotating mechanism 3, another workpiece to be processed is placed on the conveying mechanism 5 (see Figure 1 , and at this time, the moving bracket 52 is in the initial position);

[0041] In step S2, after the workpiece on the support rotating mechanism 3 is processed, the power bracket 4 rises and places the processed workpiece on the conveying mechanism 5;

[0042] In step S3, the moving bracket 52 on the conveying mechanism 5 moves until the processed workpiece moves above the unloading support plate 61, and the unprocessed workpiece on the conveying mechanism 5 moves above the bracket support plate 41;

[0043] In step S4, the power bracket 4 rises to lift the unprocessed workpiece to a preset height and drives the unprocessed workpiece to rotate self - sufficiently, so that the weld of the unprocessed workpiece faces upward. The support rotating mechanism 3 clamps the workpiece, adjusts the cutting mechanism 2 to the cutting position, and rotates the support rotating mechanism 3 to cut the arc striking plate on the workpiece to be processed;

[0044] The unloading mechanism 6 pushes the processed workpiece out of the power bracket 4, and the moving bracket 52 resets, repeating to step S1.

[0045] Regarding step S4, the processing process of the water tank inner liner clamped by the support rotating mechanism 3 is as follows: When the power bracket 4 raises the water tank inner liner 14 to a position where the support rotating mechanism 3 can clamp the water tank inner liner, the weld detection device detects the position of the weld on the water tank inner liner 14. If the weld on the water tank inner liner 14 is not detected, the support wheel 42 of the power bracket 4 drives the water tank inner liner 14 to rotate self - sufficiently until the weld on the water tank inner liner 14 faces upward and the weld detection device detects the weld on the water tank inner liner 14, and then the water tank inner liner 14 stops rotating. Then the support rotating mechanism 3 starts to act and clamps the water tank inner liner 14. At this time, the power bracket 4 can move downward; adjust the position of the cutting mechanism. When the cutting head 21 moves to the predetermined position, the support rotating mechanism 3 drives the water tank inner liner 14 to rotate, and during the rotation, the cutting mechanism 2 cuts the arc striking plate on one side of the water tank inner liner 14. After the cutting of the arc striking plate on one side of the water tank inner liner 14 is completed, the cutting mechanism 2 is moved to a position close to the other arc striking plate of the water tank inner liner 14 through the electric crossbeam 8, the position of the cutting mechanism 2 is adjusted, and then the support rotating mechanism 3 drives the water tank inner liner 14 to rotate to complete the cutting of the other arc striking plate of the water tank inner liner 14. After the cutting is completed, the cutting mechanism 2 resets.

[0046] After the processing of the water tank inner liner 14 on the support rotating mechanism 3 is completed, the power bracket 4 rises until it supports the water tank inner liner 14. The support rotating mechanism 3 releases the fixation of the water tank inner liner 14, that is, the rotating head 31 and the pneumatic tailstock 32 are reset. The bracket support plate 41 moves downward, and at the same time, the moving bracket 52 moves until the water tank inner liner 14 on the bracket support plate 41 is placed on the moving bracket 52.

[0047] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claimed rights.

Claims

1. An arc striking plate cutting device, characterized in that, It includes a bracket (1), a cutting mechanism (2) and a support rotation mechanism (3). Among them, the cutting mechanism (2) and the support rotation mechanism (3) are supported on the bracket (1). The support rotation mechanism (3) is used to clamp both ends of the workpiece to be processed and can drive the workpiece to be processed to rotate. The position of the cutting head (21) on the cutting mechanism (2) is adjustable. When the cutting head (21) is adjusted to a predetermined position, rotating the workpiece on the support rotation mechanism (3) can cut the arc striking plate on the workpiece to be processed; the arc striking plate cutting device further includes a power bracket (4) for raising or lowering the workpiece to be processed. The power bracket (4) includes a bracket support plate (41). A support wheel (42) is provided on the bracket support plate (41). Driven by the power device of the power bracket (4), the workpiece to be processed provided on the support wheel (42) can be raised to a position where the support rotation mechanism (3) can clamp the workpiece to be processed, and the support wheel (42) can drive the workpiece to be processed to rotate self-driven under the drive of the drive device of the power bracket (4); the arc striking plate cutting device further includes a weld detection device. The weld detection device is connected to the power bracket (4). The power bracket (4) drives the workpiece to be processed thereon to rotate until the weld position on the workpiece to be processed faces upward and the weld detection device can detect the weld position on the workpiece to be processed; the arc striking plate cutting device further includes a conveying mechanism (5) provided on the bracket (1). The conveying mechanism (5) includes a conveying track (51). The bracket support plate (41) is located between the two conveying tracks (51). The extending direction of the conveying track (51) is perpendicular to the axial direction of the workpiece to be processed clamped on the support rotation mechanism (3). A moving bracket (52) is provided on the conveying track (51). Driven by the drive device of the conveying mechanism (5), the moving bracket (52) can drive the workpiece provided on the moving bracket (52) to move along the conveying track (51); the upper end surface of the moving bracket (52) is an arc-shaped structure that is high at both ends and low in the middle, and two workpieces to be processed can be placed on the moving bracket (52) at the same time; the arc striking plate cutting device further includes a discharging mechanism (6) provided on one side of the bracket (1). The discharging mechanism (6) includes a discharging support plate (61). The discharging support plate (61) is located between the two conveying tracks (51). When the moving bracket (52) drives the processed workpiece to move along the conveying track (51) to the upper part of the discharging support plate (61), the discharging support plate (61) can be driven by the drive device of the discharging mechanism (6) to rise upward to push the processed workpiece out of the moving bracket (52).

2. The arc starting plate cutting device according to claim 1, characterized in that, The arc striking plate cutting device further includes an electric cross beam (8), which is supported on the bracket (1), and the extending direction of the electric cross beam (8) is consistent with the axial direction of the workpiece to be processed clamped on the support rotating mechanism (3). The cutting mechanism (2) is connected to the electric cross beam (8) through a connection driving structure (9), and the position of the cutting head (21) can be adjusted through the electric cross beam (8) and the connection driving structure (9).

3. The arc starting plate cutting device according to claim 1, characterized in that The cutting head (21) is a fiber laser cutting head (21).

4. A cutting method for cutting an arc starting plate using the arc starting plate cutting device according to any one of claims 1-3, characterized in that, It includes the following content Clamp the workpiece to be processed on the support rotating mechanism (3); Adjust the cutting mechanism (2) to the cutting position, and rotate the support rotating mechanism (3) to cut the arc striking plate on the workpiece to be processed.

5. The cutting method according to claim 4, characterized in that The cutting method specifically includes the following content Step S1: When the cutting mechanism (2) performs arc striking plate cutting on the workpiece supported on the support rotating mechanism (3), place another workpiece to be processed on the conveying mechanism (5); Step S2: After the workpiece on the support rotating mechanism (3) is processed, the power bracket (4) rises and places the processed workpiece on the conveying mechanism (5); Step S3: The moving bracket (52) on the conveying mechanism (5) moves until the processed workpiece moves above the unloading support plate (61), and the unprocessed workpiece on the conveying mechanism (5) moves above the bracket support plate (41); Step S4: The power bracket (4) rises to lift the unprocessed workpiece to a preset height and drives the unprocessed workpiece to rotate self - sufficiently so that the weld of the unprocessed workpiece faces upward. The support rotating mechanism (3) clamps the workpiece, adjusts the cutting mechanism (2) to the cutting position, and rotates the support rotating mechanism (3) to cut the arc striking plate on the workpiece to be processed; The unloading mechanism (6) pushes the processed workpiece out of the power bracket (4), the moving bracket (52) resets, and repeats to step S1.

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