Laser welding machine for valve maintenance

Abstract

The invention discloses a laser welding machine for valve maintenance, which comprises a positioning seat, an adjusting frame and a laser welding device, a clamp for clamping a valve is arranged on the positioning seat, the laser welding device is mounted on the adjusting frame, the laser welding device is positioned above the clamp, the clamp comprises symmetrically arranged clamping jaws, the clamping jaws are horizontally and slidably connected to the positioning seat, and the adjusting frame is mounted on the positioning seat. A baffle plate is arranged on the positioning seat and comprises fixed plates and movable plates, the fixed plates and the movable plates are alternately distributed and are arc-shaped, the fixed plates and the movable plates are spliced to form a circumference surrounding the clamp, the movable plates are circumferentially and slidably connected to the positioning seat, and a transmission mechanism for transmitting the movable plates and the clamping jaws is arranged between the movable plates and the clamping jaws. A spacing area is formed between every two adjacent fixed plates, when the clamping jaws move oppositely to complete clamping, the movable plates are linked to move to close the spacing areas, the fixed plates and the movable plates form peripheral surrounding protection, damage to eyes of workers caused by sparks in the welding process is avoided, damage caused by splashing of the sparks is effectively prevented, and the use safety is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of valve maintenance equipment, in particular to a laser welding machine for valve maintenance. Background Art

[0002] A valve is a device used to control the flow of fluid (liquid, gas, slurry, etc.) in a pipe or equipment. It can regulate the flow, pressure and direction of the fluid, and is widely used in various industrial pipeline systems, building water supply and drainage systems, heating and gas transmission and other fields. A damaged valve may cause fluid leakage, uncontrolled flow, and even cause safety accidents. A laser welding machine is required for valve maintenance. The laser welding machine is a device that uses a high-energy-density laser beam as a heat source to weld materials. Its working principle is based on the thermal effect generated when the laser interacts with the material. When the laser beam is irradiated to the surface of the material to be welded, the material absorbs the energy of the laser, and the light energy is converted into heat energy, causing the material to quickly heat up to the melting point and melt, and then cool and solidify, thereby connecting two or more parts together.

[0003] At present, laser welding machines mainly include a workbench and a laser welder. The valve is clamped and fixed by a fixture on the workbench, and then the required parts are welded with the help of a laser welder to achieve the purpose of maintenance. However, the sparks generated during the welding process are splashing and dazzling, which is harmful to the health of the workers and needs further improvement. Summary of the invention

[0004] In order to further improve safety during use, the present application provides a laser welding machine for valve maintenance.

[0005] The present application provides a laser welding machine for valve maintenance, which adopts the following technical solution: A laser welding machine for valve maintenance comprises a positioning seat, an adjusting frame and a laser welder, wherein the positioning seat is provided with a clamp for clamping the valve, the laser welder is installed on the adjusting frame, the laser welder is located above the clamp, the clamp comprises symmetrically arranged jaws, the jaws are horizontally slidably connected to the positioning seat, a shielding plate is provided on the positioning seat, the shielding plate comprises a fixed plate and a movable plate, the fixed plate and the movable plate are alternately distributed and both are arc-shaped, the fixed plate and the movable plate are spliced ​​into a circle surrounding the clamp, the movable plate is circumferentially slidably connected to the positioning seat, a transmission mechanism for transmitting the movable plate and the jaws is provided between the movable plate and the jaws, a spacing area is formed between adjacent fixed plates, and when the jaws move towards each other to complete clamping, the movable plate is linked to move to the closed spacing area.

[0006] Optionally, the adjustment frame includes a horizontal frame and a vertical frame, the vertical frame is horizontally slidably connected to the horizontal frame, the vertical frame is vertically slidably connected to a sliding seat, the laser welder is installed on the sliding seat, the laser welder is provided with a cover body for covering the baffle plate, and the cover body, the baffle plate and the positioning seat form a closed welding chamber.

[0007] Optionally, the transmission mechanism includes a rack and a gear, the rack is arranged at the bottom of the clamp, one side of the rack is meshed with the gear, the gear is rotatably connected to the center of the positioning seat, the gear has a central axis, a connecting portion fixed on the central axis extends from the movable plate, and the movable plate moves circumferentially around the center of the positioning seat.

[0008] Optionally, the cover body is provided with a suction pipe connected to the welding cavity, the suction pipe is connected to a suction fan, and a button for turning on the suction fan is provided on the top wall of the baffle plate. When the cover body moves down and covers the baffle plate, the button is triggered to turn on the suction fan for suction.

[0009] Optionally, scrapers are provided on both sides of the movable plate, and the scrapers abut against the inner wall of the fixed plate.

[0010] Optionally, the clamping jaw has a seat body, the seat body is horizontally slidably connected to the positioning seat, and the seat body is provided with a driving motor for driving the clamping jaw to rotate.

[0011] Optionally, an elastically retractable scraper strip is provided at one end of the driving motor away from the clamping jaws, and the scraper strip always abuts against the inner wall of the movable plate.

[0012] Optionally, a screw rod is rotatably connected to the positioning seat, the screw rod passes through the seat body, the screw rod is provided with thread segments with opposite thread rotation directions, the seat body of the symmetrical clamp is threadedly connected to the thread segments with opposite thread rotation directions, and the screw rod is provided with a first motor to drive it to rotate.

[0013] Optionally, one end of the scraper is elastically connected to a movable plate, the movable plate has a slot for the scraper to be plugged and installed, and the slot has a return spring for driving the scraper to move outward and return to its original position.

[0014] Optionally, the fixed plate and the movable plate are hollow inside to form a reserved hollow groove, and the hollow groove vertically penetrates the top wall of the fixed plate and the movable plate to form a notch.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the combined design of the fixed plate and the movable plate, the movable plate is linked to move to a state of misalignment with the fixed plate during the process of the clamping jaws moving to clamp the valve. The fixed plate and the movable plate form a peripheral surrounding protection to avoid sparks from damaging the eyes of workers during welding, and effectively prevent sparks from splashing out and causing damage, effectively improving the safety of use; 2. When the laser welder moves downward, the cover body moves downward synchronously and covers the shielding plate, thereby forming a closed welding chamber, which effectively prevents the harmful gas generated during the welding process from overflowing. When the cover body is closed, the trigger button automatically turns on the suction fan to absorb the harmful gas generated during the welding process, so that no odor is generated during welding to endanger the health of the workers, and the working environment is improved; 3. Sparks fly during welding, causing some welding impurities to adhere to the inner walls of the fixed plate and the movable plate. The design of the scraper and scraper bar allows the movable plate and the fixed plate to be moved simultaneously with the scraper and scraper bar, thereby automatically cleaning the welding impurities, which is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an overall diagram of Example 1.

[0017] Figure 2 It is a cross-sectional view of the clamp in Example 1.

[0018] Figure 3 It is a top view of the movable plate and the fixed plate in Example 1 when they are staggered.

[0019] Figure 4 It is a top view of the movable plate and the fixed plate when they overlap in Example 1.

[0020] Figure 5 It is a schematic diagram of the transmission mechanism in Example 1.

[0021] Figure 6 It is a partial cross-sectional view of the connection between the movable plate and the fixed plate in Example 1.

[0022] Figure 7 It is a cross-sectional view of the telescopic rod in Example 1.

[0023] Figure 8 It is a top view of the movable plate in Example 2.

[0024] Description of reference numerals: 1. Base; 2. Positioning seat; 3. Adjustment frame; 4. Laser welder; 5. Clamp; 6. Horizontal frame; 7. Vertical frame; 8. Sliding seat; 9. Power source; 10. Clamp; 11. Seat body; 12. First motor; 13. Screw rod; 14. Threaded section; 15. Driving motor; 16. Shielding plate; 17. Fixed plate; 18. Movable plate; 19. Spacer; 20. Gear; 21. Rack; 22. Central axis; 23. Cover body; 24. Welding chamber; 25. Suction pipe; 26. Button; 27. Scraper; 28. Scraper strip; 29. ​​Telescopic rod; 30. Compression spring; 31. Groove body; 32. Reset spring; 33. Hollow groove; 34. Notch; 35. Connecting part. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-8 This application is described in further detail.

[0026] A laser welding machine for valve maintenance, such as Figure 1 and Figure 2 As shown, it includes a base 1, a positioning seat 2, an adjusting frame 3 and a laser welder 4. The positioning seat 2 is arranged on one side of the base 1, and the adjusting frame 3 is arranged on the other side of the base 1. The laser welder 4 is installed on the adjusting frame 3 to realize position adjustment. A clamp 5 for clamping the valve is arranged on the positioning seat 2. In actual use, the valve to be repaired is placed in the clamp 5 for clamping and fixing, and then the valve is welded and repaired by adjusting the position of the laser welder 4.

[0027] like Figure 1 and Figure 2 As shown, the adjustment frame 3 includes a horizontal frame 6 and a vertical frame 7. The horizontal frame 6 is horizontally fixed on the base 1, and the vertical frame 7 is horizontally slidably connected to the horizontal frame 6 along the direction close to the positioning seat 2. The horizontal frame 6 is provided with a power source 9 for driving the vertical frame 7 to move horizontally. The vertical frame 7 is vertically slidably connected to a sliding seat 8. The laser welder 4 is installed on the sliding seat 8. The vertical frame 7 is also provided with a power source 9 for driving the sliding seat 8 to rise and fall. The power source 9 adopts an electric screw rod or a cylinder, so that the position of the laser welder 4 can be adjusted, so that welding maintenance can be performed on different areas of the valve to be repaired, which has better practicality.

[0028] like Figure 1 and Figure 2As shown, the clamp 5 includes symmetrically arranged clamping jaws 10, which are mounted on a seat body 11, which is horizontally slidably connected to a positioning seat 2, and a driving source for driving the two symmetrical clamping jaws 10 to move synchronously toward or away from each other is arranged on the positioning seat 2, and the driving source includes a first motor 12 and a screw rod 13, which is rotatably connected to the positioning seat 2, and the first motor 12 drives the screw rod 13 to rotate, and the screw rod 13 passes through the seat body 11 and is threadedly connected to the seat body 11, and the screw rod 13 has two thread segments 14 with opposite thread rotation directions, and the seat body 11 on the symmetrical clamping jaws 10 is respectively threadedly connected to the threaded rotating jaws 14. On the opposite threaded section 14, the symmetrical clamping jaws 10 can be synchronously driven to move horizontally in the same direction or in the opposite direction by the rotation of the driving motor 15 to realize the switching of clamping and loosening. The structure is simple and practical, and the rapid clamping or loosening operation of the valve can be realized. In addition, a driving motor 15 for driving the clamping jaws 10 to rotate circumferentially is arranged on the seat body 11. The clamping jaws 10 adopt pneumatic clamping jaws 10. In this way, after the clamping jaws 10 clamp the valve, the driving motor 15 can be used to drive the clamping jaws 10 to rotate to drive the valve to rotate to adjust the position, so that the adjustable welding area of ​​the valve is more and more comprehensive.

[0029] like Figure 1 , Figure 3 and Figure 4 As shown, a baffle plate 16 for surrounding and blocking the outer periphery of the fixture 5 is provided on the positioning seat 2, and the baffle plate 16 includes a fixed plate 17 and a movable plate 18, and both the fixed plate 17 and the movable plate 18 are provided with two and symmetrically arranged, and the fixed plate 17 and the movable plate 18 are both in the shape of arc strips, wherein the movable plate 18 is circumferentially slidably connected to the positioning seat 2, and there is a spacing between the symmetrical fixed plates 17 to form a spacing area 19, and the movable plate 18 can slide to the spacing area 19 to block it. When it is necessary to take and place the valve, the movable plate 18 is slid to a position overlapping with the fixed plate 17. At this time, the spacing area 19 is in an open state, which is convenient for the staff to take and place the valve. When welding maintenance is required, the movable plate 18 is driven to slide to a state of being misaligned with the fixed plate 17. At this time, the movable plate 18 is located at the spacing area 19 to achieve blocking. At this time, the valve and the fixture 5 are surrounded as a whole inside the baffle plate 16, so as to avoid sparks from damaging the eyes of the staff during welding, and effectively prevent sparks from splashing out and causing damage, thereby effectively improving the safety of use.

[0030] like Figure 1 , Figure 3 and Figure 5As shown, a transmission mechanism for transmitting the two is arranged between the movable plate 18 and the seat body 11, and the transmission mechanism includes a gear 20 and a rack 21, wherein the rack 21 is fixed at the bottom of the seat body 11, and the gear 20 is rotatably connected to the center of the positioning seat 2, and has a central axis 22 in the center of the gear 20, and a connecting portion 35 fixed to the central axis 22 extends from the bottom of the movable plate 18, so that when the seat body 11 moves horizontally, the movable plate 18 can be synchronously driven to slide circumferentially to achieve position adjustment. When the seat body 11 moves toward each other to complete the clamping and fixing of the valve, the transmission movable plate 18 moves to the closed interval area 19 to achieve surrounding and shielding. When the seat body 11 moves backward to release the valve, the transmission movable plate 18 moves to a state staggered with the interval area 19, which is convenient for taking and placing the valve, and is simple and convenient.

[0031] like Figure 1 As shown, a cover body 23 for covering the top of the shielding plate 16 is provided on the laser welder 4. When the laser welder 4 moves down to the welding position, the cover body 23 covers the top of the shielding plate 16. At this time, the cover body 23, the shielding plate 16 and the positioning seat 2 form a closed welding chamber 24, which effectively prevents the harmful gas generated during the welding process from overflowing, so that no odor is generated during the welding period to endanger the health of the workers, and improves the working environment; in addition, an air suction pipe 25 is provided in the cover body 23, and one end of the air suction pipe 25 is connected to the welding chamber 24 is connected, and the other end is connected to the suction fan, and a button 26 for turning on the suction fan is arranged on the top wall of the shielding plate 16. When the cover body 23 moves down to abut the shielding plate 16, the button 26 is pressed to automatically turn on the suction fan, and the suction pipe 25 can effectively absorb the odorous gas generated by welding, thereby improving the safety during the welding process. After the welding is completed, the cover body 23 moves up and the button 26 is no longer pressed. At this time, the suction fan is automatically turned off, thus realizing the automatic opening and closing of the suction fan without manual operation, which is simple, convenient and energy-saving.

[0032] like Figure 1 , Figure 3 , Figure 6 as well as Figure 7As shown, since there will be sparks and splashes during welding, that is, welding debris or impurities will adhere to the inner wall of the shielding plate 16, scrapers 27 for abutting the inner wall of the fixed plate 17 are provided on the symmetrical sides of the movable plate 18, so that the scraper 27 can be used to synchronously scrape and clean the inner wall of the fixed plate 17 during the movement of the movable plate 18, so that automatic scraping and cleaning can be achieved, which is simple and convenient. At the same time, the scraper 27 also plays the role of blocking and sealing the connection to prevent the discharge of internal odorous gases; a scraper strip 28 is elastically connected to the end of the driving motor 15 away from the clamping jaws 10, and the seat body 11 is water-proof. During the horizontal movement, one side of the scraper bar 28 always abuts against the inner wall of the movable plate 18. During the movement of the movable plate 18, the scraper bar 28 can be used to automatically scrape off welding impurities. A telescopic rod 29 connecting the scraper 27 and the drive motor 15 is provided between the scraper 27 and the drive motor 15. A compression spring 30 is provided in the telescopic rod 29. The elastic reset of the compression spring 30 always keeps the scraper 27 and the movable plate 18 in abutment. During the process of the seat body 11 moving back and outward, that is, during the process of the clamping jaw 10 releasing the valve, the elastic force of the compression spring 30 gradually increases, thereby achieving a better scraping effect.

[0033] like Figure 6 As shown, the scraper 27 is elastically connected to the movable plate 18. The movable plate 18 is provided with a groove 31 for the scraper 27 to be inserted. The groove 31 is provided with a reset spring 32 for driving the scraper 27 to move outward and reset. In this way, the scraper 27 and the fixed plate 17 can be kept in a good abutment state. Even if the scraper 27 is worn out due to long-term use, automatic compensation can still be achieved with the help of the reset spring 32. The scraper 27 can always maintain a good working state and has better durability.

[0034] Example 2 A laser welding machine for valve maintenance, such as Figure 8 As shown, the difference between it and Example 1 mainly lies in the different structures of the fixed plate 17 and the movable plate 18. In this embodiment, the fixed plate 17 and the movable plate 18 are hollow inside to form a reserved hollow groove 33, and the top of the hollow groove 33 is penetrated to form a notch 34, which can save materials and reduce gravity while facilitating better movement of the movable plate 18. In this embodiment, the movable plate 18 adopts a translucent plate, such as a glass plate, which has a certain degree of transparency. At the same time, the design of the hollow groove 33 can be plugged with shading plates with different light transmittances according to different needs. When the flames generated by welding are not dazzling, the internal welding situation can be roughly seen, thereby protecting the health of the workers while also taking into account the observation of the internal welding situation.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser welding machine for valve maintenance, characterized in that: The invention comprises a positioning seat (2), an adjusting frame (3) and a laser welder (4); the positioning seat (2) is provided with a clamp (5) for clamping a valve; the laser welder (4) is installed on the adjusting frame (3); the laser welder (4) is located above the clamp (5); the clamp (5) comprises symmetrically arranged clamping jaws (10); the clamping jaws (10) are horizontally slidably connected to the positioning seat (2); the positioning seat (2) is provided with a shielding plate (16); the shielding plate (16) comprises a fixed plate (17) and a movable plate ( 18), the fixed plates (17) and the movable plates (18) are alternately distributed and both are arc-shaped, the fixed plates (17) and the movable plates (18) are spliced ​​to form a circle surrounding the clamp (5), the movable plate (18) is circumferentially slidably connected to the positioning seat (2), a transmission mechanism for transmitting the movable plate (18) and the clamping jaws (10) is provided between the movable plate (18) and the clamping jaws (10), a spacing area (19) is formed between adjacent fixed plates (17), and when the clamping jaws (10) move toward each other to complete clamping, the movable plate (18) is linked to move to the closed spacing area (19).

2. A laser welding machine for valve maintenance according to claim 1, characterized in that: The adjustment frame (3) comprises a horizontal frame (6) and a vertical frame (7), wherein the vertical frame (7) is horizontally slidably connected to the horizontal frame (6), and a sliding seat (8) is vertically slidably connected to the vertical frame (7), and the laser welder (4) is mounted on the sliding seat (8). The laser welder (4) is provided with a cover body (23) for covering the shielding plate (16), and the cover body (23), the shielding plate (16) and the positioning seat (2) form a closed welding chamber (24).

3. A laser welding machine for valve maintenance according to claim 1, characterized in that: The transmission mechanism comprises a rack (21) and a gear (20), wherein the rack (21) is arranged at the bottom of the clamp (10), one side of the rack (21) is meshed with the gear (20), the gear (20) is rotatably connected to the center of the positioning seat (2), the gear (20) has a central axis (22), a connecting portion (35) fixed on the central axis (22) is extended from the movable plate (18), and the movable plate (18) moves circumferentially around the center of the positioning seat (2).

4. A laser welding machine for valve maintenance according to claim 2, characterized in that: The cover body (23) is provided with a suction pipe (25) which is in communication with the welding chamber (24); the suction pipe (25) is connected to a suction fan; a button (26) for turning on the suction fan is provided on the top wall of the shielding plate (16); when the cover body (23) moves downward to cover the shielding plate (16), the button (26) is triggered to turn on the suction fan for suction.

5. The laser welding machine for valve maintenance according to claim 1, characterized in that: Scrapers (27) are provided on both sides of the movable plate (18), and the scrapers (27) abut against the inner wall of the fixed plate (17).

6. The laser welding machine for valve maintenance according to claim 1, characterized in that: The clamping jaw (10) is provided with a seat body (11), the seat body (11) is horizontally slidably connected to the positioning seat (2), and a driving motor (15) for driving the clamping jaw (10) to rotate is arranged on the seat body (11).

7. A laser welding machine for valve maintenance according to claim 6, characterized in that: An elastically retractable scraper strip (28) is provided at one end of the driving motor (15) away from the clamping jaw (10), and the scraper strip (28) always abuts against the inner wall of the movable plate (18).

8. The laser welding machine for valve maintenance according to claim 6, characterized in that: A screw rod (13) is rotatably connected to the positioning seat (2), the screw rod (13) passes through the seat body (11), and a threaded section (14) with a thread rotation direction opposite to the threaded section (14) is provided on the screw rod (13). The seat body (11) of the symmetrical clamping jaw (10) is threadedly connected to the threaded section (14) with a thread rotation direction opposite to the threaded section (14), and the screw rod (13) is provided with a first motor (12) for driving it to rotate.

9. The laser welding machine for valve maintenance according to claim 5, characterized in that: One end of the scraper (27) is elastically connected to the movable plate (18), and the movable plate (18) has a groove (31) for the scraper (27) to be inserted and installed, and the groove (31) has a return spring (32) for driving the scraper (27) to move outward and return to its original position.

10. The laser welding machine for valve maintenance according to claim 1, characterized in that: The fixed plate (17) and the movable plate (18) are hollow inside to form a reserved hollow groove (33), and the hollow groove (33) vertically penetrates the top wall of the fixed plate (17) and the movable plate (18) to form a notch (34).

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