Laser welding equipment for improving valve weld joint surface forming

Abstract

The invention provides laser welding equipment for improving valve weld joint surface forming, and belongs to the field of laser welding, the laser welding equipment comprises a base, a protective shell is fixedly connected to the base, a first air cylinder is fixedly mounted on the upper end face of the protective shell, and a purification assembly is mounted on the protective shell; a protection plate is fixedly connected to the telescopic end of the first air cylinder, and a three-axis moving platform is fixedly installed on the inner wall of the protection shell. According to the laser welding device, the protection shell and the protection plate are matched, protection on welding machining is achieved, radiation and metal splashing can be effectively isolated, the machining safety is improved, after welding machining is completed, the laser welding gun resets, under cooperation of a rack, a rotating gear and a reciprocating lead screw, a cleaning plate is moved, and the welding machining efficiency is improved. The gun head of the laser welding gun can be automatically wiped and cleaned, manual wiping and cleaning are not needed, the workload of workers is reduced, and welding precision is ensured by removing pollutants such as welding slag and splash in time.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding, and particularly relates to a laser welding device for improving the surface formation of valve welds. Background Art

[0002] Laser welding uses high energy to locally heat a small area of the material. The energy of the laser radiation diffuses into the interior of the material through heat conduction, melting the material to form a specific molten pool, and can achieve spot welding, butt welding, lap welding, seal welding, etc. It has a high depth-to-width ratio, a small width, a small heat-affected zone, small deformation, a fast welding speed, can be precisely controlled, a small focused light spot, and a high positioning accuracy.

[0003] A laser welding device for the production of a smoke exhaust valve with the publication number of CN218926565U includes a base. A sliding groove is opened at the rear end of the base, and a moving block is slidably connected to the sliding groove. This laser welding device for facilitating the production of smoke exhaust valves drives the horizontal movement of the laser welding device through the sliding connection of the sliding groove and the moving block, and the telescopic cylinder drives the vertical movement of the laser welding machine to realize the free movement of the laser welding, improving the practicability. By rotating the threaded rod by the motor, the first protective shell moves up and down, and rotating the motor drives the rotation of the first electric telescopic rod to realize the flipping welding after positioning the parts, improving the practicability. The light shielding plate is lifted and lowered by the telescopic movement of the second electric telescopic rod, and the notch can be conveniently hidden when the light shielding plate is not in use, protecting the staff from harm without interfering with the work and improving the safety. However, this device only uses the light shielding plate for protection, and the particles remaining in the smoke generated during welding have an adverse impact on the health of the staff. At the same time, after welding is completed, the welding gun needs to be manually wiped and cleaned, resulting in a large workload for the staff. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a laser welding device for improving the surface formation of valve welds.

[0005] An embodiment of the present invention provides a laser welding device for improving the surface formation of valve welds, including:

[0006] Base, a protective shell is fixedly connected to the base, a first cylinder is fixedly installed on the upper end face of the protective shell, a purification component is installed on the protective shell, a protective plate is fixedly connected to the telescopic end of the first cylinder, a three-axis moving platform is fixedly installed on the inner wall of the protective shell, a fixed shell is fixedly installed on the three-axis moving platform, a laser welding gun is fixedly installed in the fixed shell, a wiping component is installed in the protective shell, the wiping component includes a moving groove opened on the protective shell, a reciprocating lead screw is installed on the inner wall of the moving groove, an installation plate is fixedly connected to the reciprocating lead screw, a cleaning plate is installed on the installation plate, a cleaning sponge is provided on the cleaning plate, a one-way bearing is fixedly installed on the protective shell, the reciprocating lead screw is arranged on the one-way bearing, a rotating gear is fixedly installed on the one-way bearing, a rack is fixedly connected to the protective plate, and the rotating gear and the rack are meshed with each other.

[0007] Further, the purification component includes an exhaust pipe communicated with the protective shell, an exhaust fan is fixedly installed on the inner wall of the exhaust pipe, a purification box is communicated with the exhaust pipe, a plurality of mounting frames are slidably penetrated through the purification box, activated carbon plates are fixedly installed on the plurality of mounting frames, an air outlet pipe is communicated with the purification box, an air inlet pipe penetrates through the base, a connecting frame is slidably penetrated through the air inlet pipe, a dust filter screen is fixedly installed on the inner wall of the connecting frame, an air cavity is opened on the protective shell, the exhaust pipe is communicated with the air cavity, a plurality of exhaust holes are opened on the inner wall of the air cavity, and a limiting component is installed on the air inlet pipe.

[0008] Further, the limiting component includes a mounting shell fixedly connected to the air inlet pipe, a plurality of springs are fixedly connected to the inner wall of the mounting shell, a connecting plate is fixedly connected together between the plurality of springs, a clamping block is fixedly connected to the connecting plate, the clamping block is wedge-shaped, the clamping block slidably penetrates through the air inlet pipe, the connecting plate is slidably connected in the mounting shell, a clamping groove is opened on the connecting frame, the clamping block and the clamping groove are matched, and a connecting rod is slidably penetrated through the mounting shell, and the connecting rod is fixedly connected to the connecting plate.

[0009] Further, a first vertical plate is fixedly connected to the upper end face of the base, a second cylinder is fixedly installed on the protective shell, a second vertical plate is slidably connected to the base, chucks are rotatably connected to both the first vertical plate and the second vertical plate, a servo motor is fixedly installed on the first vertical plate, the rotating end of the servo motor is fixedly connected to one of the chucks, and the telescopic end of the second cylinder is fixedly connected to the second vertical plate.

[0010] Further, a support component is installed on the base, the support component includes a third cylinder fixedly installed on the base, an arc-shaped supporting plate is fixedly connected to the telescopic end of the third cylinder, a buffer cushion layer is provided on the arc-shaped supporting plate, and the buffer cushion layer is made of rubber.

[0011] Furthermore, a corrugated hose is installed on the protective shell, the corrugated hose is connected to a gas outlet hood, the gas outlet hood is fixedly connected to the fixed shell, an inert gas generating device is installed on the base, and the gas outlet end of the inert gas generating device is connected to the corrugated hose.

[0012] Furthermore, the lower end surface of the base is provided with anti-slip patterns, a plurality of bolts are threadedly passed through the base, and an observation window is provided on the protective plate.

[0013] Furthermore, a handle is fixedly connected to the mounting frame, a pull ring is fixedly connected to the connecting rod, and a protective cushion layer is provided on the handle and the pull ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. During processing, the protective shell and protective plate are used together to protect the welding process, which can effectively isolate radiation and metal splashes and improve the safety of processing. When the welding process is completed, the laser welding gun is reset, and then the first cylinder drives the protective plate to rise. With the cooperation of the rack, rotating gear and reciprocating screw, the cleaning plate moves to realize automatic wiping and cleaning of the laser welding gun head. No manual wiping and cleaning is required, which reduces the workload of the staff, and ensures the welding accuracy by timely removing pollutants such as welding slag and spatter.

[0016] 2. The smoke in the protective shell is drawn into the purification box for treatment through the exhaust fan, which can effectively protect the health of personnel, improve the welding quality and extend the life of the equipment. The dust filter can filter the gas entering the protective shell to prevent dust in the outside air from entering the protective shell, thereby ensuring the cleanliness of the processing environment and preventing dust from affecting the welding process.

[0017] 3. The connecting frame is fixed by means of a card block and a card slot. It is convenient for users to install and disassemble the connecting frame, and it is convenient for users to clean and maintain the dust filter, which improves the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural stereoscopic schematic diagram of a laser welding device for improving the surface forming of a valve weld according to an embodiment of the present invention.

[0019] Figure 2 It is a three-dimensional side view of the structure of a laser welding device for improving the surface forming of a valve weld according to an embodiment of the present invention.

[0020] Figure 3 It is a three-dimensional cross-sectional view of a laser welding device for improving the surface forming of a valve weld according to an embodiment of the present invention.

[0021] Figure 4It is a three-dimensional cross-sectional view of an intake pipe of a laser welding device for improving the surface forming of a valve weld seam described in an embodiment of the present invention.

[0022] Figure 5 for Figure 3 A magnified view of the structure in the middle.

[0023] Figure 6 for Figure 3 A magnified view of the structure in middle B.

[0024] In the above drawings: 1 base, 2 protective shell, 3 first cylinder, 4 protective plate, 5 three-axis mobile platform, 6 fixed shell, 7 laser welding gun, 8 moving groove, 9 reciprocating screw, 10 mounting plate, 11 cleaning plate, 12 rotating gear, 13 rack, 14 exhaust pipe, 15 exhaust fan, 16 purification box, 17 mounting frame, 18 activated carbon plate, 19 air inlet pipe, 20 dust filter, 21 mounting shell, 22 spring, 23 block, 24 slot, 25 air cavity, 26 second cylinder, 27 chuck, 28 servo motor, 29 arc support plate, 30 corrugated hose, 31 gas outlet hood, 32 inert gas generating device, 33 observation window, 34 handle. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figures 1-6 As shown, the embodiment of the present invention provides a laser welding device for improving the surface forming of a valve weld, comprising:

[0027] The base 1 has anti-slip grooves on the lower end surface, and a plurality of bolts are threaded through the base 1. The bolts can stably fix the base 1 in the specified position, thereby improving the stability of the device. The protective plate 4 is provided with an observation window 33. The setting of the observation window 33 is convenient for the user to observe the processing conditions in the protective shell 2. The base 1 is fixedly connected with the protective shell 2, and the upper end surface of the protective shell 2 is fixedly installed with the first cylinder 3, and the protective shell 2 is installed with a purification component. The telescopic end of the first cylinder 3 is fixedly connected with the protective plate 4, and the inner wall of the protective shell 2 is fixedly installed with a three-axis mobile platform 5, and the three-axis mobile platform 5 is fixedly installed with a fixed shell 6, and the fixed shell 6 is fixedly installed with a laser The optical welding gun 7, the three-axis mobile platform 5 and the laser welding gun 7 are all prior art. The three-axis mobile platform 5 is composed of three sets of XYZ linear modules, a servo motor, a guide rail and a controller. The spatial precision positioning is realized by programming and controlling the linkage of each axis. Its working principle is that the motor drives the ball screw or the synchronous belt to drive the slide to move, and the grating ruler feedback forms a closed-loop control. The laser welding gun 7 includes a focusing lens group, a collimator and a temperature sensor. The core conducts high-energy laser through optical fiber to form a light spot after focusing. When the two work together, the three-axis mobile platform 5 is responsible for the trajectory movement, and the laser welding gun 7 completes the energy output and process control, which will not be repeated here.

[0028] A wiping component is installed inside the protective shell 2. The wiping component includes a moving groove 8 opened on the protective shell 2. The inner wall of the moving groove 8 is provided with a reciprocating lead screw 9. A mounting plate 10 is fixedly connected to the reciprocating lead screw 9. A cleaning plate 11 is installed on the mounting plate 10. A cleaning sponge is provided on the cleaning plate 11. A one-way bearing is fixedly installed on the protective shell 2. The reciprocating lead screw 9 is arranged on the one-way bearing. A rotating gear 12 is fixedly installed on the one-way bearing. The one-way bearing is a prior art, which consists of an outer ring, an inner ring, rolling elements and a cage. Its core structure adopts an inclined plane or eccentric design. Its working principle is based on the mechanical self-locking effect. When the driving end rotates clockwise, the rolling elements are squeezed by the inclined plane to generate a wedging effect to achieve torque transmission. When rotating in the reverse direction, the rolling elements are separated from the track to form an idling. Specifically, when the rack 13 descends, the reciprocating lead screw 9 does not work. When the rack 13 ascends, the reciprocating lead screw 9 works. Here, it will not be elaborated. A rack 13 is fixedly connected to the protective plate 4. The rotating gear 12 and the rack 13 are meshed with each other. The purification component includes an exhaust pipe 14 communicated with the protective shell 2. An exhaust fan 15 is fixedly installed on the inner wall of the exhaust pipe 14. A purification box 16 is communicated with the exhaust pipe 14. A plurality of mounting frames 17 slidably penetrate through the purification box 16. Activated carbon plates 18 are fixedly installed on the plurality of mounting frames 17. An air outlet pipe is communicated with the purification box 16. An air inlet pipe 19 penetrates through the base 1. A connecting frame slidably penetrates through the air inlet pipe 19. A dust filter screen 20 is fixedly installed on the inner wall of the connecting frame. An air cavity 25 is opened on the protective shell 2. The exhaust pipe 14 is communicated with the air cavity 25. A plurality of exhaust holes are opened on the inner wall of the air cavity 25. A limiting component is installed on the air inlet pipe 19;

[0029] The limiting component includes a mounting shell 21 fixedly connected to the air inlet pipe 19. A plurality of springs 22 are fixedly connected to the inner wall of the mounting shell 21. A connecting plate is fixedly connected together among the plurality of springs 22. A clamping block 23 is fixedly connected to the connecting plate. The clamping block 23 is arranged in a wedge shape. The clamping block 23 slidably penetrates through the air inlet pipe 19. The connecting plate is slidably connected inside the mounting shell 21. A clamping groove 24 is opened on the connecting frame. The clamping block 23 and the clamping groove 24 are matched with each other. A connecting rod slidably penetrates through the mounting shell 21. The connecting rod is fixedly connected to the connecting plate. A handle 34 is fixedly connected to the mounting frame 17. The handle 34 facilitates the user to pull out the mounting frame 17. A pull ring is fixedly connected to the connecting rod. Protective cushion layers are provided on both the handle 34 and the pull ring. The pull ring facilitates the user to pull the connecting rod, improving the convenience of the device;

[0030] A first vertical plate is fixedly connected to the upper end face of the base 1. A second cylinder 26 is fixedly installed on the protective shell 2. A second vertical plate is slidably connected to the base 1. Chucks 27 are rotatably connected to both the first vertical plate and the second vertical plate. A servo motor 28 is fixedly installed on the first vertical plate. The rotating end of the servo motor 28 is fixedly connected to one of the chucks 27. The telescopic end of the second cylinder 26 is fixedly connected to the second vertical plate. The chuck 27 is a prior art, mainly composed of a jaw, a chuck body and a driving mechanism. Its working principle is to make the jaws move synchronously in the radial direction by a manual wrench, and use the tapered thread or wedge mechanism to convert the rotational force into a clamping force to achieve high concentricity clamping of the workpiece, which is applicable to the processing of cylindrical workpieces and special-shaped parts and will not be elaborated here;

[0031] A support assembly is installed on the base 1. The support assembly includes a third cylinder fixedly installed on the base 1. The telescopic end of the third cylinder is fixedly connected to an arc-shaped support plate 29. A buffer cushion layer is provided on the arc-shaped support plate 29. The buffer cushion layer is made of rubber. The third cylinder cooperates with the arc-shaped support plate 29 to achieve the support of the workpiece to be processed, thereby facilitating the user to install and take the workpiece to be processed and improving the convenience of the device. A corrugated hose 30 is installed on the protective shell 2. An air outlet hood 31 is communicated with the corrugated hose 30. The air outlet hood 31 is fixedly connected to the fixed shell 6. An inert gas generating device 32 is installed on the base 1. The air outlet end of the inert gas generating device 32 is communicated with the corrugated hose 30. The inert gas generating device 32 is a prior art, mainly composed of a gas source, a pressure reducing valve, a purification unit, a flow controller and an output pipeline. Its working principle is to remove active components such as oxygen and moisture through cryogenic separation or chemical reaction to generate high-purity inert gas, which is precisely regulated and then transported to the welding area to form a protective atmosphere to prevent metal oxidation and will not be elaborated here.

[0032] The detailed working process of the present invention is as follows:

[0033] Through the second cylinder 26, the second vertical plate can be driven to move, so as to adjust the positions of the two chucks 27. Subsequently, the workpiece to be processed is clamped and fixed by the two chucks 27. Then, the first cylinder 3 drives the protective plate 4 to descend. During processing, the protective shell 2 and the protective plate 4 cooperate to achieve the protection of the welding process, which can effectively isolate radiation and metal spatter, improving the safety of processing. During welding, the exhaust fan 15 extracts the smoke in the protective shell 2 into the purification box 16, and the activated carbon plate 18 on the mounting frame 17 purifies the smoke, which can effectively protect the health of personnel, improve the welding quality and extend the service life of the equipment. And the dust filter net 20 can filter the gas entering the protective shell 2 to prevent dust in the external air from entering the protective shell 2, thus ensuring the cleanliness of the processing environment and avoiding dust affecting the welding process. When it is necessary to clean the dust filter net 20, the user pulls the pull ring, and the clamping block 23 can be removed from the clamping groove 24. At this time, the connecting frame can be removed, so as to clean and maintain the dust filter net 20. When it is necessary to install the connecting frame, the connecting frame is inserted into the air inlet pipe 19. The clamping block 23 moves into the mounting shell 21 under the action of the thrust. When the clamping groove 24 is aligned with the clamping block 23, the spring 22 resets, and the clamping block 23 automatically moves into the clamping groove 24. The connecting frame is fixed by the cooperation of the clamping block 23 and the clamping groove 24. It is convenient for the user to install and disassemble the connecting frame, which is convenient for the user to clean and maintain the dust filter net 20, improving the convenience of the device. After the welding process is completed, the laser welding gun 7 resets and rises to the highest point. Then, the first cylinder 3 drives the protective plate 4 to rise. When the rack 13 rises, it will contact the rotating gear 12, causing the reciprocating lead screw 9 to start working. The mounting plate 10 moves reciprocally, and the cleaning sponge on the cleaning plate 11 can wipe the welding end of the laser welding gun 7 without manual wiping, reducing the workload of the staff. And by timely removing pollutants such as welding slag and spatter, the welding accuracy is ensured.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A laser welding device for improving the surface forming of valve welds, characterized in that: include: A base (1), a protective shell (2) is fixedly connected to the base (1), a first cylinder (3) is fixedly installed on the upper end surface of the protective shell (2), a purification component is installed on the protective shell (2), a protective plate (4) is fixedly connected to the telescopic end of the first cylinder (3), a three-axis mobile platform (5) is fixedly installed on the inner wall of the protective shell (2), a fixed shell (6) is fixedly installed on the three-axis mobile platform (5), a laser welding gun (7) is fixedly installed in the fixed shell (6), a wiping component is installed in the protective shell (2), and the wiping component includes a cleaning device opened in the protective shell The movable groove (8) on the protective shell (2) is provided with a reciprocating screw (9) on the inner wall of the movable groove (8), a mounting plate (10) is fixedly connected to the reciprocating screw (9), a cleaning plate (11) is installed on the mounting plate (10), a cleaning sponge is provided on the cleaning plate (11), a one-way bearing is fixedly installed on the protective shell (2), the reciprocating screw (9) is arranged on the one-way bearing, a rotating gear (12) is fixedly installed on the one-way bearing, a rack (13) is fixedly connected to the protective plate (4), and the rotating gear (12) and the rack (13) are meshed with each other.

2. The laser welding equipment for improving the surface forming of valve weld according to claim 1, characterized in that: in: The purification component comprises an exhaust pipe (14) connected to the protective shell (2), an exhaust fan (15) is fixedly installed on the inner wall of the exhaust pipe (14), a purification box (16) is connected to the exhaust pipe (14), a plurality of mounting frames (17) are slidably penetrated on the purification box (16), and an activated carbon plate (18) is fixedly installed on each of the plurality of mounting frames (17), an air outlet pipe is connected to the purification box (16), an air inlet pipe (19) is penetrated on the base (1), a connecting frame is slidably penetrated on the air inlet pipe (19), a dust filter (20) is fixedly installed on the inner wall of the connecting frame, an air cavity (25) is opened on the protective shell (2), the exhaust pipe (14) is connected to the air cavity (25), a plurality of exhaust holes are opened on the inner wall of the air cavity (25), and a limit position component is installed on the air inlet pipe (19).

3. The laser welding equipment for improving the surface forming of valve weld according to claim 2, characterized in that: in: The limiting assembly comprises a mounting shell (21) fixedly connected to the air intake pipe (19), a plurality of springs (22) being fixedly connected to the inner wall of the mounting shell (21), a connecting plate being fixedly connected between the plurality of springs (22), a clamping block (23) being fixedly connected to the connecting plate, the clamping block (23) being arranged in a wedge shape, the clamping block (23) slidingly passing through the air intake pipe (19), the connecting plate being slidably connected in the mounting shell (21), a clamping slot (24) being provided on the connecting frame, the clamping block (23) and the clamping slot (24) matching each other, a connecting rod slidingly passing through the mounting shell (21), and the connecting rod being fixedly connected to the connecting plate.

4. The laser welding equipment for improving the surface forming of valve weld according to claim 1, characterized in that: in: The upper end surface of the base (1) is fixedly connected to a first vertical plate, the protective shell (2) is fixedly mounted with a second cylinder (26), the base (1) is slidably connected to a second vertical plate, the first vertical plate and the second vertical plate are both rotatably connected to chucks (27), a servo motor (28) is fixedly mounted on the first vertical plate, the rotating end of the servo motor (28) is fixedly connected to one of the chucks (27), and the telescopic end of the second cylinder (26) is fixedly connected to the second vertical plate.

5. The laser welding equipment for improving the surface forming of valve weld according to claim 1, characterized in that: in: A support assembly is mounted on the base (1), the support assembly comprising a third cylinder fixedly mounted on the base (1), the telescopic end of the third cylinder being fixedly connected to an arc-shaped support plate (29), the arc-shaped support plate (29) being provided with a buffer layer, the buffer layer being made of rubber.

6. The laser welding equipment for improving the surface forming of valve weld according to claim 1, characterized in that: in: A corrugated hose (30) is installed on the protective shell (2), and the corrugated hose (30) is connected to a gas outlet hood (31), and the gas outlet hood (31) is fixedly connected to the fixed shell (6). An inert gas generating device (32) is installed on the base (1), and the gas outlet end of the inert gas generating device (32) is connected to the corrugated hose (30).

7. The laser welding equipment for improving the surface forming of valve weld according to claim 1, characterized in that: in: The lower end surface of the base (1) is provided with anti-slip grooves, a plurality of bolts are threadedly passed through the base (1), and an observation window (33) is provided on the protective plate (4).

8. The laser welding equipment for improving the surface forming of valve welds according to claim 3 is characterized in that: in: A handle (34) is fixedly connected to the mounting frame (17), a pull ring is fixedly connected to the connecting rod, and a protective cushion layer is provided on the handle (34) and the pull ring.

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