Size-adaptive automatic end welding tool for plate roller machining

Abstract

The invention discloses a size-adaptive automatic end welding tool for plate roller machining, and belongs to the technical field of welding. The size-adaptive automatic end welding tool comprises a supporting seat, a connecting frame is fixedly mounted in the middle of the upper end of the supporting seat, a positioning power component for limiting a plate roller and a plug is mounted on the connecting frame, and a second motor is fixedly mounted on the connecting frame; and a first lead screw is installed at the output end of the second motor, a moving column is installed on the first lead screw, an air cylinder is installed on the moving column, a welding head is fixedly connected to the telescopic end of the air cylinder, a clamping base is installed on the supporting base, and a third motor is fixedly connected to the clamping base. According to the size-adaptive automatic end welding tool for plate roller machining, by arranging the corresponding grinding roller, welding slag at the welding position can be ground and cleaned after a plug and a plate roller are welded, meanwhile, the grinding roller can be cooled when grinding is not needed, and the situation that the grinding roller is in a high-temperature state for a long time is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to an end automatic welding tool for processing a plate roller with an adaptive size. Background Art

[0002] The plate roller is an important component of the printing press and is one of the components that carry the plate surface. When the plate roller is in use, plugs need to be set at both ends of the plate roller. After the plugs are initially fixed at both ends of the plate roller, there is often an annular gap between the plugs and the plate roller. Currently, this annular gap needs to be filled by welding.

[0003] For example, the Chinese patent with the announcement date of 2021-06-04, the name of which is: a plate roller automatic welding machine, and the announcement number is: CN112894069A, which includes the V-clamp device and the tailstock device, which are symmetrical and connected to the bed device through a guide rail slider; the two welding gun adjustment devices are respectively fixed to the two tailstock devices by bolts; the V-clamp device includes a detection module, a servo motor, a V-shaped bracket, a roller mechanism, and a U-shaped moving frame; the welding gun adjustment device includes an electric welding gun, an X-axis manual adjustment module, a Z-axis moving module, a rotating mechanism, and a Y-axis rotating clamp block; the tailstock device includes: a clamp, a conductive sheet, a copper ring, a clamping cylinder, a carbon brush component, a seat body, and a spindle rotating mechanism; The above-mentioned prior art has the following technical problems: after the existing welding machine welds the plate roller, it is not convenient to effectively clean the welding slag attached to the welding point, which leads to the presence of welding slag at the welding point between the plug and the end of the plate roller, which is easy to affect the overall smoothness of the product surface. At the same time, some prior arts usually use corresponding grinding rollers to grind the welding points, and the grinding roller mainly relies on friction during grinding. After long-term grinding, the grinding roller is prone to be in a high temperature state. After the grinding roller is overheated for a long time, it is easy to affect the service life of the grinding roller itself.

[0004] Therefore, we proposed an automatic welding tool for the end of the plate roller processing with an adaptive size to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic welding tool for the end of a plate roller with an adaptive size, so as to solve the problem raised by the above-mentioned background technology that the existing welding machines on the market are not convenient for effectively cleaning the welding slag attached to the welding point after welding the plate roller, which leads to the presence of welding slag at the welding point between the plug and the end of the plate roller, which is easy to affect the overall smoothness of the product surface. At the same time, some existing technologies usually use corresponding grinding rollers to grind the welding points, and the grinding roller mainly relies on friction during grinding. After long-term grinding, the grinding roller is prone to be in a high temperature state. After the grinding roller is overheated for a long time, it is easy to affect the service life of the grinding roller itself.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic welding tool for an end head of an adaptive-size plate roller processing, comprising a support seat, a connecting frame is fixedly installed on the middle part of the upper end of the support seat, and a positioning power component for limiting the plate roller and the plug is installed on the connecting frame, a second motor is fixedly installed on the connecting frame, and a first screw rod is installed on the output end of the second motor, a moving column is installed on the first screw rod, and a cylinder is installed on the moving column, a welding head is fixedly connected to the telescopic end of the cylinder, a clamping seat is installed on the support seat, and a third motor is fixedly connected to the clamping seat, a second screw rod is installed on the output end of the third motor, and a limited grinding component is installed on the second screw rod, the limited grinding component is used to grind and clean the welding slag at the welding point after welding, and realize heat exchange and cooling of the grinding tool during the non-grinding idle period.

[0007] Preferably, the movable column and the first screw rod are threadedly connected, and the outer wall of the movable column and the inner wall of the connecting frame are in contact with each other, and the movable column and the connecting frame are slidably connected.

[0008] By adopting the above technical solution, the movable column moves on the connecting frame, thereby preventing the movable column from rotating synchronously with the first screw rod.

[0009] Preferably, the positioning power component includes a first motor, a small electric telescopic rod and a top, and the first motor is fixed to the side of the connecting frame, a small electric telescopic rod is fixedly installed on the output end of the first motor, and the telescopic end of the small electric telescopic rod is fixedly connected to the top.

[0010] By adopting the technical solution, the plugs at the ends of plate rollers of different lengths can be compressed by extending and shortening the small electric telescopic rod.

[0011] Preferably, the limit grinding component includes a lifting frame, and the lifting frame is installed on the second screw rod, the lifting frame is fixedly connected to the fourth motor, and the output end of the fourth motor is installed with a third screw rod, the third screw rod is installed with a guide frame, and the side of the guide frame is fixedly connected to the fifth motor, the output end of the fifth motor is installed with a movable plate, and the movable plate is fixedly connected to an air intake pipe, the air intake pipe is rotatably connected to a limit roller, and a grinding roller is fixedly installed on the movable plate, and a filter plate and an active plate are fixedly installed on the inner side of the air inlet end of the air intake pipe Carbon adsorption layer, a piston rod is installed inside the limiting roller, and the piston rod is interconnected with the inside of the limiting roller through a built-in spring, one end of the piston rod extending out of the limiting roller is fixedly connected to a first magnetic block, and a disc is arranged on the side of the first magnetic block, the disc is fixed on the movable plate, and a second magnetic block is fixedly installed on the side of the disc facing the first magnetic block, an air outlet pipe is installed on the intake pipe, and one end of the air outlet pipe away from the intake pipe is interconnected with the grinding roller, a one-way valve is installed on both the air outlet pipe and the intake pipe, and a through hole is opened on the grinding roller.

[0012] By adopting the above technical solution and arranging the filter plate and the activated carbon adsorption layer, the particulate matter in the welding smoke generated during the welding process can be filtered out.

[0013] Preferably, the third screw rod, the second screw rod and the first screw rod are each provided with two sections of threads, and the directions of the two sections of threads on the third screw rod, the second screw rod and the first screw rod are opposite.

[0014] By adopting the above technical solution, the two sections of threads on the third screw rod, the second screw rod and the first screw rod have opposite directions, so that the two components on each screw rod can move relatively synchronously.

[0015] Preferably, the interiors of the limiting roller and the grinding roller are both configured as hollow structures, and the interior of the limiting roller and the suction pipe are interconnected, and the opening of the suction pipe faces the direction of the plate roller welding, and the grinding roller is evenly provided with a plurality of through holes.

[0016] By adopting the above technical solution, through the hollow structure inside the grinding roller, when air is supplied to the inside of the grinding roller, heat is exchanged between the airflow and the grinding roller.

[0017] Preferably, a sealing ring is circumferentially fixed to one end of the piston rod located inside the limiting roller, and the piston rod forms an elastic telescopic structure through a built-in spring and the interior of the limiting roller.

[0018] By adopting the above technical solution, the sealing performance of the piston rod when it moves inside the limiting roller can be ensured through the sealing ring at the end of the piston rod.

[0019] Preferably, the first magnetic block at the end of the piston rod has the same magnetic properties as the second magnetic block on the disc, and a plurality of second magnetic blocks are evenly distributed at equal angles on the disc.

[0020] By adopting the above technical solution, when the first magnetic block and the second magnetic block on the disc are close to each other, the piston rod can be moved by utilizing the repulsive magnetic force.

[0021] Preferably, the one-way valves on the air outlet pipe and the air intake pipe have opposite flow directions, and the one-way valve on the air outlet pipe can only let out air but not let in air, while the one-way valve on the air intake pipe can only let in air but not let out air.

[0022] By adopting the above technical solution, through the one-way valve on the air outlet pipe, when the piston rod squeezes out the air flow inside the limiting roller, the squeezed air flow can enter the interior of the grinding roller through the air outlet pipe.

[0023] Compared with the prior art, the invention has the following beneficial effects: the automatic welding tool for the end of the plate roller processing with an adaptive size can grind and clean the welding slag at the welding place after welding between the plug and the plate roller by setting a corresponding grinding roller, and can cool the grinding roller when grinding is not needed, so as to avoid the grinding roller being in a high temperature state for a long time; 1. A top head is provided, and the position of the top head can be changed by opening a small electric telescopic rod, so as to resist and press the plugs at the ends of the plate rollers of different lengths. At the same time, the first screw can move its moving column after the rotation. The position of the welding head can be adjusted according to the welding position of the plate rollers of different sizes through the movement of the moving column, so as to automatically adapt to the welding of plate rollers of different sizes; 2. A limiting roller is provided. The guide frame can be moved by rotating the third screw rod, so that the limiting roller on the guide frame contacts the side of the plate roller, thereby driving the limiting roller to rotate when the plate roller is rotated for welding. When the limiting roller rotates, the distance between the first magnetic block at the end of the piston rod and the second magnetic block on the disc changes, so that the piston rod can move back and forth inside the limiting roller. The surrounding air during welding can be sucked and discharged by the movement of the piston rod, and the particulate matter in the air can be filtered out by the filter plate and the activated carbon adsorption layer on the suction pipe, thereby playing a certain role in purifying the air; 3. A grinding roller is provided. After welding, the grinding roller is rotated to the side of the plate roller by the rotation of the movable plate. After the plate roller rotates, the grinding roller is in contact with the welding part, so that the welding slag at the welding part can be polished and cleaned by the grinding roller; 4. An air outlet pipe is provided. When the piston rod is pumping and exhausting air inside the guide roller, the exhausted air flow can enter the interior of the grinding roller through the air outlet pipe. The air flowing inside the grinding roller can exchange heat with the grinding roller when grinding is not needed, thereby realizing heat exchange and cooling of the grinding roller. The air after heat exchange flows out from the through holes opened on the grinding roller, thereby avoiding overheating of the grinding roller due to failure to dissipate heat in time after long-term continuous work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the small electric telescopic rod and the top head of the present invention; Figure 3 This is a schematic diagram of the structure of the first screw rod and the movable column of the present invention; Figure 4 It is a schematic diagram of the structure of the moving column and the cylinder of the present invention; Figure 5 It is a schematic diagram of the structure of the second screw rod and the lifting frame of the present invention; Figure 6 It is a schematic diagram of the structure of the third screw rod and the guide frame of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram at A in the middle; Figure 8 It is a schematic diagram of the structure of the limiting roller and the piston rod of the present invention; Fig. 9 It is a schematic diagram of the grinding roller and the air outlet pipe structure of the present invention.

[0025] In the figure: 1, support base; 2, connecting frame; 3, positioning power component; 301, first motor; 302, small electric telescopic rod; 303, top head; 4, second motor; 5, first screw rod; 6, moving column; 7, cylinder; 8, welding head; 9, clamping seat; 10, third motor; 11, second screw rod; 12, limit grinding component; 121, lifting frame; 122, fourth motor; 123, third screw rod; 1 24. Guide frame; 125. Fifth motor; 126. Movable plate; 127. Limit roller; 128. Grinding roller; 129. Intake pipe; 1210. Filter plate; 1211. Activated carbon adsorption layer; 1212. Piston rod; 1213. Internal spring; 1214. First magnetic block; 1215. Disc; 1216. Second magnetic block; 1217. Exit pipe; 1218. One-way valve; 1219. Through hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figure 1-Figure 9 After welding the plate roller, the existing welding machine is not convenient for effectively cleaning the welding slag attached to the welding place, which leads to the presence of welding slag at the welding place between the plug and the end of the plate roller, which is easy to affect the overall smoothness of the product surface. In order to solve this technical problem, the present embodiment discloses the following technical contents, including a support seat 1, a connecting frame 2 is fixedly installed at the middle part of the upper end of the support seat 1, and a positioning power component 3 for limiting the plate roller and the plug is installed on the connecting frame 2, a second motor 4 is fixedly installed on the connecting frame 2, and a second motor 4 is installed at the output end of the second motor 4. A threaded rod 5, a moving column 6 is installed on the first threaded rod 5, and a cylinder 7 is installed on the moving column 6, a welding head 8 is fixedly connected to the telescopic end of the cylinder 7, a clamping seat 9 is installed on the support seat 1, and a third motor 10 is fixedly connected to the clamping seat 9, a second threaded rod 11 is installed on the output end of the third motor 10, and a limited position grinding component 12 is installed on the second threaded rod 11, the moving column 6 and the first threaded rod 5 are threadedly connected, and the outer wall of the moving column 6 and the inner wall of the connecting frame 2 are in contact with each other, and the moving column 6 and the connecting frame 2 are slidably connected, and the positioning power component 3 The first motor 301 includes a first motor 301, a small electric telescopic rod 302 and a top head 303, and the first motor 301 is fixed to the side of the connecting frame 2, the small electric telescopic rod 302 is fixedly installed on the output end of the first motor 301, and the telescopic end of the small electric telescopic rod 302 is fixedly connected to the top head 303, the limiting grinding component 12 includes a lifting frame 121, and the lifting frame 121 is installed on the second screw rod 11, the lifting frame 121 is fixedly connected to the fourth motor 122, and the output end of the fourth motor 122 is installed with a third screw rod 123, and the third screw rod 123 is fixedly connected to the lifting frame 121. A guide frame 124 is installed on the rod 123, and a fifth motor 125 is fixedly connected to the side of the guide frame 124, a movable plate 126 is installed on the output end of the fifth motor 125, and an air suction pipe 129 is fixedly connected to the movable plate 126, a limiting roller 127 is rotatably connected to the air suction pipe 129, and a grinding roller 128 is fixedly installed on the movable plate 126, and two sections of threads are arranged on the third screw rod 123, the second screw rod 11 and the first screw rod 5, and the directions of the two sections of threads on the third screw rod 123, the second screw rod 11 and the first screw rod 5 are opposite.

[0028] When it is necessary to weld the connection between the plate roller and the plug, after assembling the plate roller and the plug, place them between the left and right top heads 303 on the connecting frame 2, and then turn on the small electric telescopic rod 302. After the small electric telescopic rod 302 is turned on, the top head 303 can be moved and pressed against the plate roller and the plug, and then the second motor 4 is turned on. After the second motor 4 is turned on, the first screw rod 5 is rotated. Through the rotation of the first screw rod 5, the two moving columns 6 and the welding head 8 are moved to the top of the plate roller and the plug to be welded. The welding head 8 is controlled to move downward by the cylinder 7 so that the welding head 8 and the welding point of the plate roller contact each other. Thereafter, the end of the plate roller is welded by turning on the welding head 8. During the welding process, the first motor 301 is turned on. The turning on of the first motor 301 can use the top head 303 to drive the plate roller and the plug to rotate synchronously, thereby using the rotating plate roller and the plug to make the welding head 8 weld the welding point evenly. After the welding of the end of the plate roller is completed, the cylinder 7 is used to make the welding head 8 and the end of the plate roller move away from each other, and then the third motor 10 is turned on. After the third motor 10 is turned on, the second screw rod 11 can be rotated, and the rotation of the second screw rod 11 can make the threaded support frame 121 move, so that the support frame 121 moves to the side of the welding part of the plate roller, and then the fifth motor 125 is used to drive the movable plate 126 to rotate, so that the grinding roller 128 on the movable plate 126 is rotated to the side of the welding part of the plate roller, and then, the third screw rod 123 can be rotated by turning on the fourth motor 122. After the third screw rod 123 rotates, the threaded guide frame 124 can drive the grinding roller 128 to be close to the welding part of the plate roller, and then the first motor 301 can be turned on to use the top head 303 to drive the plate roller and the plug to rotate synchronously. After the plate roller rotates, the welding slag at the welding part can be polished by the grinding roller 128.

[0029] Embodiment 2: The technical content disclosed in this embodiment is a further improvement made on the basis of the above-mentioned embodiment 1. The following technical content is disclosed in this embodiment. Some existing technologies usually use corresponding grinding rollers 128 to grind the welding parts. The grinding rollers 128 mainly rely on friction during grinding. After long-term grinding, the grinding rollers 128 are prone to be in a high-temperature state. After the grinding rollers 128 are overheated for a long time, the service life of the grinding rollers 128 themselves is easily affected. In order to further solve this technical problem, the following technical content is disclosed in this embodiment. The air inlet end of the air intake pipe 129 is provided with a plurality of holes. A filter plate 1210 and an activated carbon adsorption layer 1211 are fixedly installed on the side of the movable plate 126, a piston rod 1212 is installed inside the limiting roller 127, and the piston rod 1212 is connected to the inside of the limiting roller 127 through a built-in spring 1213, and the end of the piston rod 1212 extending out of the limiting roller 127 is fixedly connected to a first magnetic block 1214, and a disc 1215 is arranged on the side of the first magnetic block 1214, the disc 1215 is fixed on the movable plate 126, and a second magnetic block 1216 is fixedly installed on the side of the disc 1215 facing the first magnetic block 1214, and an outlet is installed on the suction pipe 129. The air pipe 1217 is connected to the grinding roller 128 at one end of the air outlet pipe 1217 away from the air intake pipe 129. The one-way valve 1218 is installed on the air outlet pipe 1217 and the air intake pipe 129. The grinding roller 128 is provided with a through hole 1219. The interior of the limiting roller 127 and the grinding roller 128 are both set as hollow structures, and the interior of the limiting roller 127 and the air intake pipe 129 are connected to each other, and the opening of the air intake pipe 129 faces the direction of the plate roller welding. The grinding roller 128 is evenly distributed with a plurality of through holes 1219. The piston rod 1212 is located at one end of the limiting roller 127. A sealing ring is fixed, and the piston rod 1212 forms an elastic telescopic structure through the built-in spring 1213 and the interior of the limiting roller 127. The magnetic properties of the first magnetic block 1214 at the end of the piston rod 1212 are the same as the magnetic properties of the second magnetic block 1216 on the disk 1215, and there are multiple second magnetic blocks 1216 evenly distributed at equal angles on the disk 1215. The one-way valve 1218 on the outlet pipe 1217 and the intake pipe 129 have opposite flow directions, and the one-way valve 1218 on the outlet pipe 1217 can only exhaust air but not intake air, and the one-way valve 1218 on the intake pipe 129 can only intake air but not exhaust air.

[0030] When the grinding roller 128 finishes grinding the welding part of the plate roller, the welded and ground plate roller is removed, and the next plate roller to be welded is assembled and fixed according to the above process, and the movable plate 126 is controlled to rotate by the fifth motor 125. After the movable plate 126 rotates, the limiting roller 127 rotates to the side of the plate roller. Thereafter, the third screw rod 123 can be rotated by turning on the fourth motor 122. After the third screw rod 123 rotates, the threaded guide frame 124 can drive the limiting roller 127 to be close to the side of the plate roller, and then When the plate roller is performing rotation welding, the grinding roller 128 is in a non-working state. When the plate roller rotates, it can drive the limiting roller 127 to rotate synchronously on the suction pipe 129. After the limiting roller 127 rotates, the piston rod 1212 can rotate synchronously. When the piston rod 1212 rotates, the first magnetic block 1214 at its end and the second magnetic block 1216 on the disk 1215 approach each other, and the repulsive magnetic force of the first magnetic block 1214 and the second magnetic block 1216 can make the piston rod 1212 move to the outside of the limiting roller 127. The piston rod 1212 moves sideways, and after the piston rod 1212 moves, the limiting roller 127 can suck the air around the welding area into its own interior through the suction pipe 129. After the air around the welding area enters the suction pipe 129, the particles and impurities generated by welding in the air can be filtered by the filter plate 1210 and the activated carbon adsorption layer 1211, thereby playing a certain role in air purification. When the first magnetic block 1214 at the rear end of the piston rod 1212 rotates and the second magnetic block 1216 on the disc 1215 move away from each other, the piston rod 1212 The built-in spring 1213 resets the piston rod 1212, and the reset piston rod 1212 squeezes the purified air inside the limiting roller 127 into the interior of the grinding roller 128 through the outlet pipe 1217. The air entering through the interior of the grinding roller 128 can exchange heat with the grinding roller 128 during the idle period, and the air after heat exchange is discharged to the outside through the through holes 1219 around the grinding roller 128, thereby achieving cooling of the grinding roller 128 during the idle period, thereby avoiding overheating of the grinding roller 128 due to the failure to dissipate heat in time after the grinding roller 128 has been working continuously for a long time.

[0031] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic welding tool for the end of a plate roller with an adaptive size, comprising a support seat (1), a connecting frame (2) fixedly mounted in the middle of the upper end of the support seat (1), and a positioning power component (3) for limiting the position of the plate roller and the plug is mounted on the connecting frame (2), characterized in that: Also includes: A second motor (4) is fixedly mounted on the connecting frame (2), and a first screw rod (5) is mounted on the output end of the second motor (4), a movable column (6) is mounted on the first screw rod (5), and a cylinder (7) is mounted on the movable column (6), a welding head (8) is fixedly connected to the telescopic end of the cylinder (7), a clamping seat (9) is mounted on the support seat (1), and a third motor (10) is fixedly connected to the clamping seat (9), a second screw rod (11) is mounted on the output end of the third motor (10), and a limited position grinding component (12) is mounted on the second screw rod (11), and the limited position grinding component (12) is used to grind and clean the welding slag at the welding position after welding, so as to achieve heat exchange and cooling of the grinding tool during the non-grinding idle period.

2. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 1 is characterized in that: The movable column (6) and the first screw rod (5) are threadedly connected, the outer wall of the movable column (6) and the inner wall of the connecting frame (2) fit each other, and the movable column (6) and the connecting frame (2) are slidably connected.

3. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 1 is characterized by: The positioning power component (3) comprises a first motor (301), a small electric telescopic rod (302) and a top head (303), wherein the first motor (301) is fixed to a side of the connecting frame (2), the small electric telescopic rod (302) is fixedly mounted on the output end of the first motor (301), and the telescopic end of the small electric telescopic rod (302) is fixedly connected to the top head (303).

4. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 1 is characterized in that: The position-limiting grinding component (12) comprises a lifting frame (121), and the lifting frame (121) is mounted on the second screw rod (11); a fourth motor (122) is fixedly connected to the lifting frame (121), and a third screw rod (123) is mounted on the output end of the fourth motor (122); a guide frame (124) is mounted on the third screw rod (123), and a fifth motor (125) is fixedly connected to the side of the guide frame (124); a movable plate (126) is mounted on the output end of the fifth motor (125), and an air intake pipe (129) is fixedly connected to the movable plate (126); a position-limiting roller (127) is rotatably connected to the air intake pipe (129), and a grinding roller (128) is fixedly mounted on the movable plate (126); a filter plate (1210) and an activated carbon adsorption layer (1211) are fixedly mounted on the inner side of the air inlet end of the air intake pipe (129); the position-limiting roller (127) A piston rod (1212) is installed inside the movable plate (126), and the piston rod (1212) is connected to the inside of the limiting roller (127) via a built-in spring (1213). One end of the piston rod (1212) extending out of the limiting roller (127) is fixedly connected to a first magnetic block (1214), and a disk (1215) is provided on the side of the first magnetic block (1214). The disk (1215) is fixed on the movable plate (126), and the disk (121 5) A second magnetic block (1216) is fixedly mounted on a side facing the first magnetic block (1214); an air outlet pipe (1217) is mounted on the air intake pipe (129); and one end of the air outlet pipe (1217) away from the air intake pipe (129) is connected to the grinding roller (128); a one-way valve (1218) is mounted on both the air outlet pipe (1217) and the air intake pipe (129); and a through hole (1219) is provided on the grinding roller (128).

5. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 4 is characterized in that: The third screw rod (123), the second screw rod (11) and the first screw rod (5) are each provided with two sections of threads, and the directions of the two sections of threads on the third screw rod (123), the second screw rod (11) and the first screw rod (5) are opposite.

6. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 4 is characterized in that: The interiors of the limiting roller (127) and the grinding roller (128) are both configured as hollow structures, and the interior of the limiting roller (127) and the air suction pipe (129) are interconnected, and the opening of the air suction pipe (129) faces the direction of plate roller welding, and the grinding roller (128) is evenly distributed with a plurality of through holes (1219).

7. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 4 is characterized by: A sealing ring is circumferentially fixed to one end of the piston rod (1212) located inside the limiting roller (127), and the piston rod (1212) forms an elastic telescopic structure through a built-in spring (1213) and the inside of the limiting roller (127).

8. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 4 is characterized in that: The first magnetic block (1214) at the end of the piston rod (1212) has the same magnetic properties as the second magnetic block (1216) on the disk (1215), and a plurality of second magnetic blocks (1216) are evenly distributed at equal angles on the disk (1215).

9. The automatic welding tool for the end of the self-adaptive size plate roller processing according to claim 4 is characterized in that: The one-way valves (1218) on the air outlet pipe (1217) and the air intake pipe (129) have opposite flow directions, and the one-way valve (1218) on the air outlet pipe (1217) can only let out air but not let in air, while the one-way valve (1218) on the air intake pipe (129) can only let in air but not let out air.

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