Rolled can processing equipment and processing method

Abstract

The present invention provides a processing device and a processing method for a rolled can, wherein the processing device includes a feeding robot, a welding robot and a rotating mechanism. The feeding robot and the welding robot are used to complete the installation of the wave-breaking plate inside the cylinder, which has a higher degree of automation and can avoid the occurrence of casualties during manual installation; when the wave-breaking plate is installed, the cylinder is in a vertical state, which can eliminate the influence of the cylinder's own weight on the cross-sectional forming, avoid the deformation of the cylinder when the wave-breaking plate is installed, and ensure the overall quality of the cylinder. The processing method of the rolled can first installs the wave-breaking plate and then assembles the head to ensure that the cylinder segment is open at both ends when the wave-breaking plate is installed, ensure that the welding environment of the wave-breaking plate is in an open state, and avoid the occurrence of suffocation accidents during welding operations; at the same time, the open ends of the cylinder segments can be entered by mechanized equipment to assist in the installation of the wave-breaking plate, thereby improving the production efficiency of the rolled can.

Description

Technical Field

[0001] The invention relates to the field of manufacturing tank bodies of tank trucks, and in particular to a processing device and a processing method for rolled cans. Background Art

[0002] At present, the process flow of rolled tank manufacturing at home and abroad is: cylinder plate welding - cylinder rolling - cylinder butt joint - wave-breaking plate installation - head installation - circumferential seam welding - tank internal wave-breaking plate welding.

[0003] From the above process flow, it can be seen that in the manufacture of traditional rolled tanks, the whole tank body is assembled first, and the wave-breaking plate is welded last. Since the inside of the tank body is almost completely sealed after assembly, and only the manhole is used for personnel and small equipment to enter, it is impossible to perform mechanized automatic welding of the wave-breaking plate inside the cylinder, that is, manual entry into the tank is required for welding.

[0004] Manual welding of the wave-breaking plates inside the cylinder will, on the one hand, reduce the degree of automation in the manufacture of rolled tanks and affect the production efficiency of the tanks; on the other hand, since the interior of the tank is almost completely closed, the welding process also requires inert gas protection, which can easily lead to suffocation of welders in such a working environment, seriously endangering the health of the workers. Summary of the invention

[0005] The purpose of the present invention is to solve the problems in the prior art of low automation in the manufacture of rolled cans and operation risks when manually welding wave-breaking plates inside the tanks.

[0006] In order to solve the above technical problems, the present invention provides a processing equipment for rolled cans, including a working platform, a loading robot and a welding robot, the working platform is used to support the cylinder; a clamp is provided on the working platform to fix the cylinder upright on the working platform; the loading robot is located above the working platform, and can grab the wave-breaking plate to fix the wave-breaking plate in the cylinder through the opening at the top of the cylinder; the welding robot is located above the working platform, and can extend into the cylinder through the opening at the top of the cylinder to weld the weld between the wave-breaking plate and the cylinder.

[0007] Preferably, the clamp comprises a plurality of pressing members arranged at intervals along a closed curve, the shape of the closed curve being consistent with the shape of the cross section of the cylinder; the pressing members may be close to or away from the center of the closed curve to abut against or away from the outer surface of the cylinder.

[0008] Preferably, the clamp further comprises a plurality of hydraulic cylinders, each of which comprises a cylinder body and a telescopic rod arranged on the cylinder body; a clamping member is provided at the end of each telescopic rod, and the telescopic rod can be telescoped toward the center direction of the closed curve.

[0009] Preferably, the abutting surface of the pressing member for abutting against the cylinder is an arc surface and is consistent with the outer contour of the cylinder.

[0010] Preferably, at least two workstations are provided on the work platform, and each workstation is provided with the clamp; while the welding robot welds the weld between the cylinder and the wave-breaking plate on one of the workstations, the loading robot moves to the top of another workstation and fixes the wave-breaking plate to the inside of the cylinder on that workstation.

[0011] Preferably, the working platform can rotate around its own central axis, and when the working platform rotates, each of the workstations is alternately opposite to the loading robot or the welding robot.

[0012] Preferably, the cross section of the working platform is circular, and two working stations are provided on the working platform, and the two working stations are respectively arranged at two ends of the cross section of the working platform in a diameter direction.

[0013] Preferably, the rolled can processing equipment further comprises a frame, and the frame is arranged on one side of the working platform; the frame is provided with two cantilevers located above the working platform, and the loading robot and the welding robot are respectively arranged on the two cantilevers.

[0014] Preferably, a cantilever provided with the loading robot is movably mounted on the frame, and a moving direction of the cantilever is consistent with a length direction of the frame.

[0015] Preferably, the loading robot can be moved closer to or farther away from the working platform in the height direction so as to enter or move out of the interior of the cylinder through the opening at the top end of the cylinder.

[0016] The present application also provides a method for processing a rolled can, comprising the following steps: rolling a cylinder plate to obtain a cylinder segment; placing the cylinder segment vertically and supporting and fixing it, inserting a wave-breaking plate through an opening at the top of the cylinder segment and fixing it inside the cylinder segment, welding the weld between the wave-breaking plate and the cylinder segment; docking the head and tail ends of at least two cylinder segments to obtain a cylinder; and installing heads at both ends of the cylinder.

[0017] Preferably, the cylinder segments are placed vertically by a clamp, and the clamp includes a plurality of clamps arranged at intervals along a closed curve, and the shape of the closed curve is consistent with the shape of the cross-section of the cylinder; the clamps can be close to or away from the center of the closed curve to press against or away from the outer surface of the cylinder.

[0018] Preferably, the operation of fixing the wave-breaking plate inside the cylinder segment and the operation of welding the weld between the wave-breaking plate and the cylinder segment are performed simultaneously at different workstations.

[0019] It can be seen from the above technical solution that the beneficial effects of the present invention are:

[0020] The processing equipment for rolled cans of the present invention utilizes a loading robot and a welding robot to complete the installation of the wave-breaking plate inside the cylinder. Compared with the traditional manual installation of the wave-breaking plate, the installation equipment has a higher degree of automation and can avoid the occurrence of casualties during manual installation. In addition, when the wave-breaking plate is installed in the equipment, the cylinder is in a vertical state, which can eliminate the influence of the cylinder's own weight on the cross-sectional forming, avoid deformation of the cylinder when the wave-breaking plate is installed, and ensure the overall quality of the cylinder.

[0021] With regard to the processing method of the rolled can of the present invention, the wave-breaking plate is installed first, and then the head is assembled, so as to ensure that the cylinder segment is open at both ends when the wave-breaking plate is installed, and to ensure that the welding environment of the wave-breaking plate is in an open state, so as to avoid suffocation accidents during welding operations; at the same time, the open ends of the cylinder segment can be entered by mechanized equipment to assist in the installation of the wave-breaking plate, thereby improving the production efficiency of the rolled can; in addition, when the wave-breaking plate is installed, the cylinder is in a vertical state, which can eliminate the influence of the cylinder's own weight on the cross-sectional forming, avoid deformation of the cylinder when the wave-breaking plate is installed, and ensure the overall quality of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the rolled can processing equipment of the present invention.

[0023] Figure 2 It is a flow chart of an embodiment of the rolled can processing method of the present invention.

[0024] The description of the accompanying drawings is as follows: 1. rolled can processing equipment; 11. loading robot; 12. welding robot; 13. working platform; 1311. first station; 1312. second station; 14. fixture; 15. frame; 151. first cantilever; 152. second cantilever; 2. wave-breaking plate; 3. cylinder; 4. material basket. DETAILED DESCRIPTION

[0025] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0026] In order to further illustrate the principle and structure of the present invention, preferred embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0027] See also Figure 1The present application provides a rolled can processing equipment 1, which is mainly used to install a wave-breaking plate 2 inside a cylinder 3. The rolled can processing equipment 1 includes a loading robot 11, a welding robot 12 and a working platform 13.

[0028] Specifically, the working platform 13 is used to support the cylinder 3. The working platform 13 is provided with a clamp 14, which can make the cylinder 3 stand on the working platform 13. The loading manipulator 11 is located above the working platform 13, and the loading manipulator 11 can grab the wave-breaking plate 2 to fix the wave-breaking plate 2 in the cylinder 3 through the opening at the top of the cylinder 3. The welding manipulator 12 is located above the working platform 13, and the welding manipulator 12 can weld the weld between the wave-breaking plate 2 and the cylinder 3 through the opening at the top of the cylinder 3.

[0029] In this embodiment, the clamp 14 includes a plurality of pressing members arranged at intervals along a closed curve, the shape of which is consistent with the cross-sectional shape of the cylinder 3. The pressing members can be close to or away from the center of the closed curve to abut against or away from the outer surface of the cylinder 3.

[0030] Furthermore, the clamp 14 of the present embodiment further comprises a plurality of hydraulic cylinders, each of which comprises a cylinder body and a telescopic rod disposed on the cylinder body. A pressing member is disposed at the end of each telescopic rod, and the telescopic rod can be extended toward the center direction of the closed curve. When the telescopic rod is extended toward the center direction of the closed curve, the pressing member can be pressed against the outer surface of the cylinder body 3. In the present embodiment, the telescopic rods of each hydraulic cylinder can be extended synchronously to ensure the clamp 14 has a clamping and fixing effect on the cylinder body 3.

[0031] The surface of the pressing member of this embodiment used to press against the cylinder 3 is a contact surface, which is a curved surface and is consistent with the outer contour of the cylinder 3. When the pressing member presses against the outer surface of the cylinder 3, it can ensure that the cross-sectional shape of the cylinder 3 itself does not change, avoid deformation of the cylinder 3 when the wave-breaking board 2 is installed, and ensure the overall quality of the cylinder 3. At the same time, the cylinder 3 is in a vertical state when the wave-breaking board 2 is installed, which can eliminate the influence of the weight of the cylinder 3 itself on the cross-sectional shaping, and ensure the smooth installation of the wave-breaking board 2 inside the cylinder 3.

[0032] In some other preferred embodiments, the clamp 14 may only include a plurality of hydraulic cylinders, which are arranged at intervals along a closed curve, and the shape of the closed curve is consistent with the shape of the cross section of the cylinder 3. The telescopic rod of each hydraulic cylinder can be telescoped in a direction toward the center of the closed curve, so that the end of the telescopic rod abuts against or moves away from the outer surface of the cylinder 3. When the end of the telescopic rod abuts against the outer surface of the cylinder 3, the cylinder 3 can be vertically fixed on the working platform 13.

[0033] Furthermore, a first station 1311 and a second station 1312 are provided on the working platform 13, and a clamp 14 is provided on each of the first station 1311 and the second station 1312, so that the cylinder 3 is erected on the first station 1311 or the second station 1312. In this embodiment, while the welding robot 12 welds the weld between the cylinder 3 and the wave-breaking plate 2 on one of the stations, the loading robot 11 moves to the top of another station and fixes the wave-breaking plate 2 inside the cylinder 3 on the one station.

[0034] Furthermore, the rolled can processing equipment 1 of the present embodiment further includes a frame 15. The frame 15 is disposed on one side of the working platform 13. In the present embodiment, a first cantilever 151 and a second cantilever 152 are provided at intervals in the length direction of the frame 15, the first cantilever 151 and the second cantilever 152 are both arranged above the working platform 13, and the ends of the first cantilever 151 and the second cantilever 152 are both extended toward the direction of the working platform 13. Among them, a feeding manipulator 11 is provided at the end of the first cantilever 151, and a welding manipulator 12 is provided at the end of the second cantilever 152.

[0035] The working platform 13 of the present embodiment can rotate around its own central axis. When the working platform 13 rotates, the first workstation 1311 and the second workstation 1312 are alternately opposite to the loading robot 11 and the welding robot 12 .

[0036] In this embodiment, the first cantilever 151 is movably mounted on the frame 15, and the moving direction of the first cantilever 151 is consistent with the length direction of the frame 15. Specifically, the frame 15 is provided with a track extending along the length direction thereof, and the first cantilever 151 can move along the track.

[0037] When the first cantilever 151 moves along the length direction of the frame 15, the loading robot 11 can move away from the working platform 13 along with the movement of the first cantilever 151, so as to be close to the basket 4 equipped with the wave-breaking board 2. After the loading robot 11 grabs the wave-breaking board 2, it moves to the top of the working platform 13 along with the first cantilever 151 to correspond to the first station 1311 or the second station 1312.

[0038] Furthermore, the height of the loading robot 11 from the working platform 13 is adjustable, that is, the loading robot 11 can be close to or away from the working platform 13 in the height direction. When the first cantilever 151 moves to the top of the working platform 13 and the loading robot 11 corresponds to the first station 1311 or the second station 1312, the loading robot 11 is close to the working platform 13 in the height direction, so that the loading robot 11 can enter the interior of the cylinder 3, so as to put the captured wave-breaking plate 2 into and fix it in the interior of the cylinder 3 by spot welding; the loading robot 11 is away from the working platform 13 in the height direction, so as to move out of the cylinder 3 from the opening at the top of the cylinder 3, so as to carry out the next operation of grabbing and loading.

[0039] For the rolled can processing equipment 1 of this embodiment, the height of the loading robot 11 from the working platform 13 is adjustable, so the loading robot 11 can install the grabbed wave-breaking plates 2 at different heights inside the cylinder 3, so as to install multiple wave-breaking plates 2 inside the cylinder 3 one by one. Generally, the loading robot 11 installs the wave-breaking plates 2 from the bottom of the cylinder 3 upward step by step, so that multiple wave-breaking plates 2 are installed at intervals in the height direction of the cylinder 3.

[0040] Furthermore, in this embodiment, the cross section of the working platform 13 is circular, and the working platform 13 can rotate around the center of the cross section. The first station 1311 and the second station 1312 of this embodiment are respectively located at the two ends of the diameter direction of the cross section of the working platform 13, that is, the line connecting the first station 1311 and the second station 1312 passes through the center of the cross section of the working platform 13.

[0041] For the rolled can processing equipment 1 of this embodiment, when the loading robot 11 corresponds to the first workstation 1311 and the welding robot 12 corresponds to the second workstation 1312, the connecting line between the first workstation 1311 and the second workstation 1312 is parallel to the length direction of the frame 15, and the first cantilever 151 and the first cantilever 151 are respectively located on both sides of the center of the working platform 13. When the working platform 13 rotates 180°, the second workstation 1312 can correspond to the loading robot 11, and the first workstation 1311 can correspond to the welding robot 12, so that the loading robot 11 can load and spot weld the wave-breaking plate 2 to the cylinder 3 on the second workstation 1312, and the welding robot 12 can weld the weld between the cylinder 3 and the wave-breaking plate 2 on the first workstation 1311; after the operations on the first workstation 1311 and the second workstation 1312 are completed, the working platform 13 rotates 180° again, so that the first workstation 1311 corresponds to the loading robot 11, and the second workstation 1312 corresponds to the welding robot 12, so as to perform corresponding operations.

[0042] When the rolled can processing equipment 1 of this embodiment is in use, the cylinder 3 is fixed on the first station 1311 and the second station 1312 by the clamp 14, so that the cylinder 3 is erected on the working platform 13; the working platform 13 is adjusted so that the first station 1311 corresponds to the loading robot 11, and the second station 1312 corresponds to the welding robot 12, and the corresponding relationship can also be reversed; the loading robot 11 moves along the length direction of the frame 15 to grab the wave-breaking plate 2 in the outer material basket 4 of the equipment, and moves the wave-breaking plate 2 to the top of the cylinder 3 on the first station 1311; the loading robot 11 adjusts its height relative to the working platform 13 so that the wave-breaking plate 2 enters the interior of the cylinder 3 from the open end of the cylinder 3; after the positions of the wave-breaking plate 2 and the cylinder 3 correspond, the loading robot 11 spot welds the wave-breaking plate 2 to fix it in the cylinder 3.

[0043] After the spot welding and fixing of the wave-breaking plate 2 on the cylinder 3 on the first workstation 1311 is completed, the work platform 13 is rotated 180°, so that the first workstation 1311 corresponds to the welding robot 12, and the second workstation 1312 corresponds to the loading robot 11; at this time, the loading robot 11 loads and spot welds the wave-breaking plate 2 on the cylinder 3 on the second workstation 1312 according to the above steps, and at the same time, the welding robot 12 welds the weld between the cylinder 3 and the wave-breaking plate 2 on the first workstation 1311; after the operations on the two workstations are completed, the work platform 13 is rotated 180°, so that the fixing and welding operations of the wave-breaking plate 2 are performed alternately, thereby completing the installation of all the wave-breaking plates 2 inside the two cylinders 3.

[0044] For the rolled can processing equipment of this embodiment, a loading robot is used to fix the wave-breaking plate inside the cylinder, and a welding robot is used to weld the weld between the cylinder and the wave-breaking plate, thereby completing the installation of the wave-breaking plate inside the cylinder. Compared with the traditional manual installation of the wave-breaking plate, the installation equipment has a higher degree of automation and can avoid the occurrence of casualties during manual installation; at the same time, the loading and fixing operations and welding operations of the wave-breaking plate are carried out alternately, which can effectively improve the work efficiency of the wave-breaking plate installation; in addition, when the wave-breaking plate is installed, the cylinder of the equipment is in a vertical state, which can eliminate the influence of the cylinder's own weight on the cross-sectional forming, avoid deformation of the cylinder when the wave-breaking plate is installed, and ensure the overall quality of the cylinder.

[0045] See also Figure 2 The present application also provides a method for processing a rolled can, the manufacturing method comprising the following steps:

[0046] S10, rolling the cylinder plate to obtain cylinder segments; S20, placing the cylinder segments vertically, inserting the wave-breaking plate through the opening at the top of the cylinder segment and fixing it inside the cylinder segment, and welding the weld between the wave-breaking plate and the cylinder segment; S30, butting the head and tail sections of at least two cylinder segments to obtain a cylinder; S40, installing heads at both ends of the cylinder respectively.

[0047] For the rolled can processing method of this embodiment, step S20 is implemented by the rolled can processing equipment 1 described above.

[0048] Specifically, by manipulating the clamp 14 of the processing equipment, the pressing piece is pressed against the surface of the cylinder segment, so that the cylinder segment is vertically fixed on the working platform 13; then the loading robot 11 grabs the wave-breaking plate, and fixes the wave-breaking plate 2 in the cylinder segment through the opening at the top of the cylinder segment; then the welding robot 12 extends into the cylinder segment through the opening at the top of the cylinder segment to weld the weld between the wave-breaking plate 2 and the cylinder segment.

[0049] When the wave-breaking plate 2 is fixed, the cylinder segment is in a vertical state. This setting can eliminate the influence of the weight of the cylinder segment itself on the cross-sectional forming, avoid deformation of the cylinder segment when the wave-breaking plate is installed, and ensure the overall quality of the rolled can. Through the openings at both ends of the cylinder segment, the wave-breaking plate can be placed in the cylinder segment by a loading manipulator 11 and fixed by spot welding inside the cylinder segment, and the weld between the wave-breaking plate and the cylinder segment can be welded by a welding manipulator 12, thereby improving the degree of automation in the manufacture of the rolled can.

[0050] Furthermore, the operation of fixing the wave-breaking plate 2 inside the cylinder segment and the operation of welding the weld between the wave-breaking plate 2 and the cylinder segment are performed synchronously at different stations. Specifically, the two cylinder segments can be respectively set upright at two stations, and when the wave-breaking plate 2 is fixed to the cylinder segment at one station, the weld between the cylinder segment and the wave-breaking plate 2 at the other station can be welded synchronously; and this process is repeated until the installation of all the wave-breaking plates 2 in the two cylinder segments is completed. The fixing operation and welding operation of the wave-breaking plates 2 in the two cylinder segments are performed alternately and synchronously, which can effectively improve the production efficiency of the rolled can.

[0051] With regard to the processing method of the rolled can of the present embodiment, the wave-breaking plate is installed first, and then the head is assembled, to ensure that the cylinder segment is open at both ends when the wave-breaking plate is installed, to ensure that the welding environment of the wave-breaking plate is in an open state, to avoid accidents of suffocation of personnel during welding operations; at the same time, the open ends of the cylinder segment can be entered by mechanized equipment to assist in the installation of the wave-breaking plate, thereby improving the production efficiency of the rolled can; in addition, when the wave-breaking plate is installed, the cylinder is in a vertical state, which can eliminate the influence of the cylinder's own weight on the cross-sectional forming, avoid deformation of the cylinder when the wave-breaking plate is installed, and ensure the overall quality of the cylinder.

[0052] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A processing equipment for rolled cans, characterized in that: include: A working platform is used to support the cylinder; a clamp is provided on the working platform to fix the cylinder upright on the working platform; A loading robot is located above the working platform and is capable of grabbing the wave-breaking plate to fix the wave-breaking plate in the cylinder through the opening at the top of the cylinder; A welding manipulator is located above the working platform and is capable of extending into the cylinder through the opening at the top of the cylinder to weld the weld between the wave-breaking plate and the cylinder; The clamp further comprises a plurality of hydraulic cylinders and a plurality of pressing members arranged at intervals along the closed curve, each of the hydraulic cylinders comprises a cylinder body and a telescopic rod arranged on the cylinder body; a pressing member is arranged at the end of each telescopic rod, and the telescopic rod can be extended and retracted toward the center direction of the closed curve; the shape of the closed curve is consistent with the shape of the cross section of the cylinder; the pressing member can be close to or away from the center of the closed curve to abut against or away from the outer surface of the cylinder; The abutting surface of the pressing member for abutting against the cylinder is an arc surface and is consistent with the outer contour of the cylinder.

2. The rolled can processing equipment according to claim 1, characterized in that: At least two workstations are provided on the working platform, and the clamp is provided on each of the workstations; while the welding robot welds the weld between the cylinder and the wave-breaking plate on one of the workstations, the loading robot moves to the top of another workstation and fixes the wave-breaking plate to the inside of the cylinder on that workstation.

3. The rolled can processing equipment according to claim 2, characterized in that: The working platform can rotate around its own central axis. When the working platform rotates, each of the workstations is alternately opposite to the loading robot or the welding robot.

4. The rolled can processing equipment according to claim 3, characterized in that: The cross section of the working platform is circular, and two workstations are arranged on the working platform, and the two workstations are respectively arranged at two ends of the cross section of the working platform in the diameter direction.

5. The rolled can processing equipment according to claim 1, characterized in that: The rolled can processing equipment also includes a frame, which is arranged on one side of the working platform; the frame is provided with two cantilevers located above the working platform, and the loading robot and the welding robot are respectively arranged on the two cantilevers.

6. The rolled can processing equipment according to claim 5, characterized in that: A cantilever provided with the feeding robot is movably mounted on the frame, and a moving direction of the cantilever is consistent with a length direction of the frame.

7. The rolled can processing equipment according to claim 1, characterized in that: The loading robot can approach or move away from the working platform in the height direction so as to enter or move out of the interior of the cylinder through the opening at the top end of the cylinder.

8. A method for processing a rolled can, characterized in that: The steps include: Rolling the cylinder plate to obtain cylinder segments; Place the cylinder segment vertically and support it, put the wave-breaking plate into the cylinder segment through the opening at the top of the cylinder segment and fix it inside the cylinder segment, and weld the weld between the wave-breaking plate and the cylinder segment; butting the head and tail ends of at least two cylinder segments to obtain a cylinder; Install the heads at both ends of the cylinder respectively; The cylinder sections are placed vertically by a clamp, and the clamp further comprises a plurality of hydraulic cylinders and a plurality of pressing members arranged at intervals along the closed curve, each of the hydraulic cylinders comprises a cylinder body and a telescopic rod arranged on the cylinder body; each end of the telescopic rod is provided with a pressing member, and the telescopic rod can be extended and retracted toward the center direction of the closed curve; the shape of the closed curve is consistent with the shape of the cross section of the cylinder; the pressing member can be close to or away from the center of the closed curve to abut against or away from the outer surface of the cylinder; The abutting surface of the pressing member for abutting against the cylinder is an arc surface and is consistent with the outer contour of the cylinder.

9. The method for processing a rolled can according to claim 8, characterized in that: The operation of fixing the wave-breaking plate inside the cylinder segment and the operation of welding the weld between the wave-breaking plate and the cylinder segment are carried out simultaneously at different workstations.

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