Roller laser cladding device and method

Abstract

The invention relates to the technical field of laser cladding, in particular to a roller laser cladding device and method.The roller laser cladding device comprises a workbench, a position changing supporting piece is arranged on the inner side of a position clamping frame, and a centering control piece located above the position clamping frame is arranged at the top of the workbench. When a first air cylinder stretches, a second guide rod can move downwards under the action of a second transmission straight gear and a second tooth groove, so that a V-shaped groove, a second Y-shaped supporting plate and a first Y-shaped supporting plate move towards the center of a three-jaw chuck, and a Y-shaped jacking plate can be buckled into the V-shaped groove under pushing of a roller; the first contact piece makes contact with the second contact piece so that the warning lamp can be turned on, when the warning lamp is powered on and turned on, the first air cylinder is turned off, meanwhile, the clamping pin can be inserted into the positioning hole under the action of the elastic restoring force of the first telescopic spring, and therefore the circle center of the roller and the circle center of the three-jaw chuck are coaxial, and rapid alignment of the roller and the three-jaw chuck is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cladding, and in particular to a roller laser cladding device and method. Background Art

[0002] Rollers are the main equipment for steel rolling. The quality of rolls plays a critical role in the quality and quantity of steel produced. After long-term rolling, the radius of the middle part of the roll will decrease and pits will form on the surface, which will have a serious impact on the quality of rolled steel. In order to extend the service life of the rolls, it is usually necessary to repair the working surface of the rolls. Laser cladding technology is an advanced surface modification technology. It clads the material on the surface of the substrate, melts it and the thin layer on the surface of the substrate at the same time through laser irradiation, and quickly solidifies to form a surface coating with extremely low dilution and metallurgical bonding with the substrate material, thereby significantly improving the wear resistance, corrosion resistance, heat resistance, oxidation resistance and electrical properties of the surface of the substrate material.

[0003] When laser cladding the surface of a roller, the roller needs to be placed on a support frame, and then one end of the roller is clamped and fixed by a three-jaw chuck. The roller is then driven to rotate by the rotation of the three-jaw chuck. However, due to the different diameters of the rollers, the center of the roller and the center of the three-jaw chuck are misaligned when the roller is placed. At this time, the staff is required to adjust and calibrate the position of the three-jaw chuck separately, which is cumbersome and affects the overall cladding efficiency of the equipment on the roller. Summary of the invention

[0004] The present invention aims at the technical problems existing in the prior art and provides a roller laser cladding device and method.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a rolling roller laser cladding device comprises a workbench, a horizontal movable seat, a three-jaw chuck, a movable frame, and a laser cladding head, the horizontal movable seat is movably connected to the top of the workbench, the three-jaw chuck is installed on the horizontal movable seat, the movable frame is installed on the top of the horizontal movable seat and is located above the three-jaw chuck, a laser cladding head is arranged on the movable frame, a positioning plate located on one side of the horizontal movable seat is installed on the top of the workbench, a first guide rod is inserted on the top of the positioning plate to penetrate the bottom of the workbench, a positioning frame located above the positioning plate is installed on the top of the first guide rod, a transposition support is arranged on the inner side of the positioning frame, a first cylinder is arranged at the bottom of the workbench, an output end of the first cylinder is connected to the bottom of the positioning frame, the top of the positioning frame is connected to a first Y-shaped support plate and a second Y-shaped support plate through a transposition support, and a centering control member located above the positioning frame is arranged on the top of the workbench.

[0006] As a further solution of the present invention: the number of the first Y-shaped support plate and the second Y-shaped support plate are both two, and the two first Y-shaped support plates and the two second Y-shaped support plates are symmetrically arranged along the vertical center axis of the positioning frame.

[0007] As a further solution of the present invention: the centering control member includes a second transmission spur gear arranged at the bottom of the workbench and located on one side of the first guide rod, a first tooth groove is provided on the first guide rod close to the second transmission spur gear, a second guide rod penetrating the workbench is provided on the side of the second transmission spur gear away from the first guide rod, a second tooth groove is provided on one side of the second transmission spur gear, a flip plate is rotatably connected to the top of the second guide rod through a rotating shaft, first transmission spur gears are provided at both ends of the rotating shaft connecting the flip plate and the second guide rod, a second cylinder is installed on one side of the second guide rod, an output end of the second cylinder is connected to a movable rack meshing with the first transmission spur gear, a V-groove is installed at the bottom of the end of the flip plate away from the second guide rod, and an extension A Y-shaped lifting plate extending to the top of the flip plate, the top of the Y-shaped lifting plate is provided with a third telescopic spring connected to the top of the flip plate, the top of the Y-shaped lifting plate is provided with a blocking rod, a positioning hole is opened on the blocking rod, a battery is installed on the top of the flip plate, a positioning plate located on one side of the battery is installed on the top of the flip plate, a control compartment is provided on the positioning plate, the blocking rod extends to the inner side of the control compartment, the top of the blocking rod is provided with a first contact piece located inside the control compartment, the inner wall of the control compartment is provided with a second contact piece located above the first contact piece, a warning light is provided on the top of the control compartment, the bottom of the movable rack is provided with a fourth telescopic spring connected to one side of the second guide rod, a bayonet is inserted on the positioning plate, and the bayonet is provided with a first telescopic spring connected to the positioning plate.

[0008] As a further solution of the present invention: the opening angles of the Y-shaped lifting plate and the bottom of the V-shaped groove are equal to the opening angles of the tops of the first Y-shaped support plate and the second Y-shaped support plate, and rollers are provided on the tops of the first Y-shaped support plate and the second Y-shaped support plate.

[0009] As a further solution of the present invention: the farthest distance from the bottom of the Y-shaped lifting plate to the bottom of the V-shaped groove is equal to the farthest distance from the positioning hole to the pin, the diameter of the pin near the blocking rod is equal to the diameter of the positioning hole, and a ball is provided at the end of the pin near the blocking rod.

[0010] As a further solution of the present invention: the first contact piece is electrically connected to the battery through a wire, and the second contact piece is electrically connected to the warning light and the second cylinder through a wire.

[0011] As a further solution of the present invention: the transposition support member includes a rotating coupling which is rotatably connected to the inner side of the locking frame through a bearing, one end of the rotating coupling is provided with an extension plate located on the outer side of the locking frame, the end of the extension plate away from the rotating coupling is connected with a locking pin, the locking pin is provided with a second telescopic spring connected to the extension plate, the rotating coupling is provided with a first lifting cam located below the first Y-shaped support plate, the rotating coupling is provided with a second lifting cam located below the second Y-shaped support plate, and the first clamping block and the second clamping block are respectively installed on both sides of one end of the locking frame close to the extension plate.

[0012] As a further solution of the present invention: the distance from the bottom of the V-shaped groove to the center of the three-jaw chuck is equal to the distance from the second Y-shaped support plate or the first Y-shaped support plate to the center of the three-jaw chuck when the second Y-shaped support plate or the first Y-shaped support plate is located at the farthest position from the clamping frame.

[0013] As a further solution of the present invention: when the first lifting cam and the second lifting cam are in horizontal positions, their protrusions face opposite directions, and balls are provided at the bottoms of the first Y-shaped support plate and the second Y-shaped support plate.

[0014] The present invention also discloses a roller laser cladding method, which uses the above roller laser cladding device and comprises the following steps: S1: First, place the roller to be laser clad on the top of the first Y-shaped support plate and the second Y-shaped support plate; S2: Then, the transposition support is operated according to the laser cladding position of the roller, so that the first Y-shaped support plate lifts the roller or the second Y-shaped support plate lifts the roller; S3: Start the first cylinder through the external controller, and the clamping frame moves upward by extending the first cylinder, and then the center of the roller is aligned with the center of the three-jaw chuck through the operation of the centering control member; S4: Then, one end of the roller is inserted into the three-jaw chuck by moving the horizontal movable seat, and then the one end of the roller is clamped and fixed by the operation of the three-jaw chuck. The laser cladding head is driven to move by the movable frame and the roller is driven to rotate by the three-jaw chuck to make the laser cladding head perform laser cladding treatment on the surface of the roller.

[0015] The beneficial effect of the present invention is that when the first cylinder is extended, the second guide rod will move downward under the action of the second transmission spur gear and the second tooth groove, so that the V-shaped groove and the second Y-shaped support plate and the first Y-shaped support plate move toward the center of the three-jaw chuck, and the Y-shaped lifting plate will be buckled into the V-shaped groove under the push of the roller, and the first contact piece will contact the second contact piece to make the warning light light up, and when the warning light is powered on and lights up, the first cylinder is turned off, and at the same time, the bayonet pin will be inserted into the positioning hole under the action of the elastic restoring force of the first telescopic spring, so that the center of the roller is coaxial with the center of the three-jaw chuck, thereby realizing the rapid alignment of the roller and the three-jaw chuck, and further improving the overall laser cladding efficiency of the equipment; When the roller is placed above the positioning frame, the roller is supported by the second Y-shaped support plate and the first Y-shaped support plate. If the position of the roller to be laser clad is above the first Y-shaped support plate, pull the locking pin and rotate the extension plate ninety degrees clockwise. At this time, the locking pin will contact the first clamping block, and at the same time, the protrusion of the second lifting cam will rotate to the top of the rotating coupling and lift the second Y-shaped support plate to separate the first Y-shaped support plate from the roller, thereby preventing the first Y-shaped support plate from blocking the laser cladding of the roller. Thereafter, loosening the locking pin will allow the locking pin to be inserted into the first clamping block. Similarly, the second Y-shaped support plate is separated from the roller by rotating the extension plate counterclockwise, so that the supporting position of the roller can be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the bottom structure of the workbench of the present invention; Figure 3 It is a schematic diagram of the connection between the first cylinder and the locking frame in the present invention; Figure 4 It is a schematic diagram of the connection between the second guide rod and the flip plate in the present invention; Figure 5 This is a schematic diagram of the internal structure of the control chamber in the present invention; Figure 6 It is a schematic diagram of the internal structure of the clamping frame of the present invention; Figure 7 It is a schematic diagram of the connection between the first lifting cam and the second lifting cam in the present invention; Figure 8 It is a schematic diagram of the connection between the positioning plate and the positioning frame in the present invention.

[0017] In the accompanying drawings, the components represented by each mark are listed as follows: 1. Workbench; 2. Horizontal movable seat; 3. Three-jaw chuck; 4. Moving frame; 5. Laser cladding head; 6. First cylinder; 7. First guide rod; 8. Positioning plate; 9. Positioning frame; 10. Extension plate; 11. First Y-type support plate; 12. Second guide rod; 13. Movable rack; 14. First transmission spur gear; 15. Turning plate; 16. Warning light; 17. Control compartment; 18. Battery; 19. First tooth groove; 20. Second transmission spur gear; 21. Bayonet; 22. Positioning Plate; 23, V-shaped groove; 24, Y-shaped lifting plate; 25, second Y-shaped support plate; 26, first telescopic spring; 27, first clamping block; 28, second clamping block; 29, first lifting cam; 30, second telescopic spring; 31, locking pin; 32, first contact piece; 33, blocking rod; 34, positioning hole; 35, third telescopic spring; 36, second cylinder; 37, fourth telescopic spring; 38, second contact piece; 39, rotating coupling; 40, second lifting cam; 41, second tooth groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0019] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0020] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details to obscure the description of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0021] Example 1 See also Figures 1 to 8 A roller laser cladding device comprises a workbench 1, a horizontal movable seat 2, a three-jaw chuck 3, a movable frame 4, and a laser cladding head 5. The horizontal movable seat 2 is movably connected to the top of the workbench 1, the three-jaw chuck 3 is installed on the horizontal movable seat 2, the movable frame 4 is installed on the top of the horizontal movable seat 2 and is located above the three-jaw chuck 3, and the laser cladding head 5 is arranged on the movable frame 4. A positioning plate 8 located on one side of the horizontal movable seat 2 is installed on the top of the workbench 1, and a first guide rod 7 penetrating to the bottom of the workbench 1 is inserted on the top of the positioning plate 8, and a first guide rod 7 located on the top of the first guide rod 7 is installed on the top of the positioning plate 8, a positioning frame 9 is arranged above the positioning frame 9, a transposition support is arranged on the inner side of the positioning frame 9, a first cylinder 6 is arranged at the bottom of the workbench 1, an output end of the first cylinder 6 is connected to the bottom of the positioning frame 9, a first Y-shaped support plate 11 and a second Y-shaped support plate 25 are connected to the top of the positioning frame 9 through the transposition support, a centering control member located above the positioning frame 9 is arranged on the top of the workbench 1, two first Y-shaped support plates 11 and two second Y-shaped support plates 25 are arranged, and the two first Y-shaped support plates 11 and the second Y-shaped support plates 25 are symmetrically arranged along the vertical center axis of the positioning frame 9; The centering control member includes a second transmission spur gear 20 arranged at the bottom of the workbench 1 and located on one side of the first guide rod 7, a first tooth groove 19 is provided on the first guide rod 7 close to the second transmission spur gear 20, a second guide rod 12 penetrating the workbench 1 is provided on the side of the second transmission spur gear 20 away from the first guide rod 7, a second tooth groove 41 is provided on one side of the second guide rod 12, a flip plate 15 is rotatably connected to the top of the second guide rod 12 through a rotating shaft, first transmission spur gears 14 are provided at both ends of the rotating shaft connecting the flip plate 15 and the second guide rod 12, and a second gear 41 is installed on one side of the second guide rod 12. The second cylinder 36 is connected to the output end of the second cylinder 36 with a movable rack 13 meshing with the first transmission spur gear 14, a V-shaped groove 23 is installed at the bottom of the end of the flip plate 15 away from the second guide rod 12, a Y-shaped lifting plate 24 extending to the top of the flip plate 15 is provided at the bottom of the V-shaped groove 23, a third telescopic spring 35 connected to the top of the flip plate 15 is provided at the top of the Y-shaped lifting plate 24, a blocking rod 33 is provided at the top of the Y-shaped lifting plate 24, a positioning hole 34 is opened on the blocking rod 33, a battery 18 is installed at the top of the flip plate 15, and a positioning hole 34 is opened on the blocking rod 33. The positioning plate 22 on the side is provided with a control chamber 17, the blocking rod 33 extends to the inner side of the control chamber 17, the top of the blocking rod 33 is provided with a first contact piece 32 located inside the control chamber 17, the inner wall of the control chamber 17 is provided with a second contact piece 38 located above the first contact piece 32, the top of the control chamber 17 is provided with a warning light 16, the bottom of the movable rack 13 is provided with a fourth telescopic spring 37 connected to one side of the second guide rod 12, the positioning plate 22 is plugged with a bayonet 21, the bayonet 21 is provided with a first telescopic spring 26 connected to the positioning plate 22, the Y-shaped lifting plate 24, the V-shaped groove 23 The opening angle of the bottom is equal to the opening angle of the top of the first Y-shaped support plate 11 and the second Y-shaped support plate 25. The top of the first Y-shaped support plate 11 and the second Y-shaped support plate 25 is provided with rollers. The maximum distance from the bottom of the Y-shaped lifting plate 24 to the bottom of the V-shaped groove 23 is equal to the maximum distance from the positioning hole 34 to the bayonet 21. The diameter of the bayonet 21 near the blocking rod 33 is equal to the diameter of the positioning hole 34. The end of the bayonet 21 near the blocking rod 33 is provided with a ball. The first contact piece 32 is electrically connected to the battery 18 through a wire, and the second contact piece 38 is electrically connected to the warning light 16 and the second cylinder 36 through a wire. In this embodiment: when the first cylinder 6 is extended, the first guide rod 7 is driven to move upward through the positioning frame 9. At this time, the first guide rod 7 drives the second transmission spur gear 20 to rotate through the first tooth groove 19. At this time, the second guide rod 12 will move downward under the action of the second transmission spur gear 20 and the second tooth groove 41, so that the V-shaped groove 23 and the second Y-shaped support plate 25 and the first Y-shaped support plate 11 move toward the center of the three-jaw chuck 3. As the first cylinder 6 continues to extend, the Y-shaped lifting plate 24 contacts the top of the roller. At this time, the Y-shaped lifting plate 24 will be buckled into the V-shaped groove 23 under the push of the roller, so that the Y-shaped lifting plate 24 is flush with the bottom of the V-shaped groove 23. At the same time, the blocking rod 33 drives the first contact piece 32 to contact the second contact piece 38, so that the warning light 16 is energized and operates. When the warning light 16 When the power is on, the first cylinder 6 is closed. At this time, the positioning hole 34 is aligned with the bayonet 21, and the bayonet 21 will be inserted into the positioning hole 34 under the action of the elastic restoring force of the first telescopic spring 26. At this time, since the moving distances of the first Y-shaped support plate 11 and the V-shaped groove 23 are equal, the center of the roller is coaxial with the center of the three-jaw chuck 3, thereby realizing the rapid alignment of the roller and the three-jaw chuck 3, further improving the overall laser cladding efficiency of the equipment. At the same time, the battery 18 supplies power to the second cylinder 36 due to the contact between the first contact piece 32 and the second contact piece 38, so as to extend the second cylinder 36, so that the second cylinder 36 drives the flip plate 15 to swing relative to the second guide rod 12 through the movable rack 13 and the first transmission spur gear 14, so as to prevent the flip plate 15 from hindering the movement of the laser cladding head 5.

[0022] Example 2 See also Figure 1 , Figure 3 , Figure 6 , Figure 7 , Figure 8 The transposition support member includes a rotating shaft 39 rotatably connected to the inner side of the positioning frame 9 through a bearing, an extension plate 10 located outside the positioning frame 9 is provided at one end of the rotating shaft 39, a locking pin 31 is inserted at one end of the extension plate 10 away from the rotating shaft 39, and a second telescopic spring 30 connected to the extension plate 10 is provided on the locking pin 31, a first lifting cam 29 located below the first Y-shaped support plate 11 is provided on the rotating shaft 39, and a second lifting cam 29 located below the second Y-shaped support plate 25 is provided on the rotating shaft 39. A lifting cam 40, a first clamping block 27 and a second clamping block 28 are respectively installed on both sides of one end of the positioning frame 9 close to the extension plate 10, the distance between the bottom of the V-shaped groove 23 and the center of the three-jaw chuck 3 is equal to the distance between the second Y-shaped support plate 25 or the first Y-shaped support plate 11 when it is located at the farthest position from the positioning frame 9 and the center of the three-jaw chuck 3, the first lifting cam 29 and the second lifting cam 40 are in the horizontal position, and the protrusions thereof face opposite directions, and the bottoms of the first Y-shaped support plate 11 and the second Y-shaped support plate 25 are both provided with balls; In this embodiment: when the roller is placed above the positioning frame 9, the roller is supported by the second Y-type support plate 25 and the first Y-type support plate 11. If the position of the roller to be laser clad is located above the first Y-type support plate 11, the locking pin 31 is pulled and the extension plate 10 is rotated ninety degrees clockwise. At this time, the locking pin 31 will contact the first clamping block 27, and the protrusion of the second lifting cam 40 will rotate to the top of the rotating coupling 39 and lift the second Y-type support plate 25 to separate the first Y-type support plate 11 from the roller, thereby preventing the first Y-type support plate 11 from blocking the laser cladding of the roller. Thereafter, the locking pin 31 can be loosened to allow the locking pin 31 to be inserted into the first clamping block 27. Similarly, the second Y-type support plate 25 is separated from the roller by rotating the extension plate 10 counterclockwise, so that the support position of the roller can be replaced.

[0023] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0024] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0025] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A roller laser cladding device, comprising a workbench (1), a horizontal movable seat (2), a three-jaw chuck (3), a movable frame (4), and a laser cladding head (5), characterized in that: The horizontal movable seat (2) is movably connected to the top of the workbench (1); the three-jaw chuck (3) is mounted on the horizontal movable seat (2); the movable frame (4) is mounted on the top of the horizontal movable seat (2) and is located above the three-jaw chuck (3); a laser cladding head (5) is arranged on the movable frame (4); a positioning plate (8) located on one side of the horizontal movable seat (2) is mounted on the top of the workbench (1); a first guide rod (7) penetrating through the bottom of the workbench (1) is inserted on the top of the positioning plate (8); and the first guide rod (7) is inserted on the top of the positioning plate (8). A positioning frame (9) located above the positioning plate (8) is installed at the top end of a guide rod (7), a transposition support member is arranged on the inner side of the positioning frame (9), a first cylinder (6) is arranged at the bottom of the workbench (1), an output end of the first cylinder (6) is connected to the bottom of the positioning frame (9), a first Y-shaped support plate (11) and a second Y-shaped support plate (25) are connected to the top of the positioning frame (9) through the transposition support member, and a centering control member located above the positioning frame (9) is arranged at the top of the workbench (1).

2. A roller laser cladding device according to claim 1, characterized in that: The number of the first Y-shaped support plate (11) and the number of the second Y-shaped support plate (25) are both two, and the two first Y-shaped support plates (11) and the two second Y-shaped support plates (25) are both symmetrically arranged along the vertical center axis of the positioning frame (9).

3. The roller laser cladding device according to claim 1, characterized in that: The centering control member comprises a second transmission spur gear (20) arranged at the bottom of the workbench (1) and located on one side of the first guide rod (7); a first tooth groove (19) is provided on the first guide rod (7) close to the second transmission spur gear (20); a second guide rod (12) penetrating the workbench (1) is provided on the side of the second transmission spur gear (20) away from the first guide rod (7); a second tooth groove (41) is provided on one side of the second guide rod (12); and a top of the second guide rod (12) is rotatably connected to a flip plate (15) via a rotating shaft. ), first transmission spur gears (14) are arranged at both ends of the rotating shaft connecting the flip plate (15) and the second guide rod (12), a second cylinder (36) is installed on one side of the second guide rod (12), and the output end of the second cylinder (36) is connected to a movable rack (13) meshing with the first transmission spur gear (14), a V-shaped groove (23) is installed at the bottom of one end of the flip plate (15) away from the second guide rod (12), and a Y-shaped lifting plate (24) extending to the top of the flip plate (15) is arranged at the bottom of the V-shaped groove (23), and the Y A third telescopic spring (35) connected to the top of the flip plate (15) is arranged on the top of the Y-shaped lifting plate (24); a blocking rod (33) is arranged on the top of the Y-shaped lifting plate (24); a positioning hole (34) is provided on the blocking rod (33); a battery (18) is installed on the top of the flip plate (15); a positioning plate (22) located on one side of the battery (18) is installed on the top of the flip plate (15); a control compartment (17) is arranged on the positioning plate (22); the blocking rod (33) extends to the inner side of the control compartment (17); and the blocking rod (33) extends to the inner side of the control compartment (17). A first contact piece (32) located inside the control chamber (17) is installed at the top of the rod (33); a second contact piece (38) located above the first contact piece (32) is installed on the inner wall of the control chamber (17); a warning light (16) is arranged on the top of the control chamber (17); a fourth telescopic spring (37) connected to one side of the second guide rod (12) is arranged at the bottom of the movable rack (13); a latch (21) is inserted into the positioning plate (22); and a first telescopic spring (26) connected to the positioning plate (22) is arranged on the latch (21).

4. A roller laser cladding device according to claim 3, characterized in that: The opening angles of the bottoms of the Y-shaped lifting plate (24) and the V-shaped groove (23) are equal to the opening angles of the tops of the first Y-shaped support plate (11) and the second Y-shaped support plate (25), and rollers are provided on the tops of the first Y-shaped support plate (11) and the second Y-shaped support plate (25).

5. The roller laser cladding device according to claim 3, characterized in that: The maximum distance from the bottom of the Y-shaped lifting plate (24) to the bottom of the V-shaped groove (23) is equal to the maximum distance from the positioning hole (34) to the bayonet (21); the diameter of one end of the bayonet (21) close to the blocking rod (33) is equal to the diameter of the positioning hole (34); and a ball is provided at one end of the bayonet (21) close to the blocking rod (33).

6. The roller laser cladding device according to claim 3, characterized in that: The first contact piece (32) is electrically connected to the battery (18) via a wire, and the second contact piece (38) is electrically connected to the warning light (16) and the second cylinder (36) via a wire.

7. The roller laser cladding device according to claim 3, characterized in that: The transposition support member comprises a rotating shaft (39) rotatably connected to the inner side of the positioning frame (9) via a bearing, one end of the rotating shaft (39) is provided with an extension plate (10) located outside the positioning frame (9), one end of the extension plate (10) away from the rotating shaft (39) is plugged with a locking pin (31), the locking pin (31) is provided with a second telescopic spring (30) connected to the extension plate (10), the rotating shaft (39) is provided with a first lifting cam (29) located below the first Y-shaped support plate (11), the rotating shaft (39) is provided with a second lifting cam (40) located below the second Y-shaped support plate (25), and the first clamping block (27) and the second clamping block (28) are respectively installed on both sides of one end of the positioning frame (9) close to the extension plate (10).

8. The roller laser cladding device according to claim 7, characterized in that: The distance between the bottom of the V-shaped groove (23) and the center of the three-jaw chuck (3) is equal to the distance between the second Y-shaped support plate (25) or the first Y-shaped support plate (11) and the center of the three-jaw chuck (3) when the second Y-shaped support plate (25) or the first Y-shaped support plate (11) is located at the farthest position from the clamping frame (9).

9. The roller laser cladding device according to claim 7, characterized in that: When the first lifting cam (29) and the second lifting cam (40) are in a horizontal position, their protrusions face opposite directions, and balls are provided at the bottoms of the first Y-shaped support plate (11) and the second Y-shaped support plate (25).

10. A roller laser cladding method, characterized in that: A roller laser cladding device according to any one of claims 1 to 9 is used, comprising the following steps: S1: firstly placing the roller to be laser clad on top of the first Y-shaped support plate (11) and the second Y-shaped support plate (25); S2: Then, the transposition support is operated according to the laser cladding position of the roller, so that the first Y-shaped support plate (11) lifts the roller or the second Y-shaped support plate (25) lifts the roller; S3: starting the first cylinder (6) through an external controller, and causing the clamping frame (9) to move upward by extending the first cylinder (6), and then aligning the center of the roller with the center of the three-jaw chuck (3) through the operation of the centering control member; S4: Then, the horizontal movable seat (2) is moved to insert one end of the roller into the three-jaw chuck (3), and then the three-jaw chuck (3) is operated to clamp and fix one end of the roller. The laser cladding head (5) is driven to move by the movable frame (4) and the three-jaw chuck (3) is driven to rotate the roller, so that the laser cladding head (5) performs laser cladding treatment on the surface of the roller.

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