Automatic welding tool for valve

Abstract

The application discloses a kind of valve automation welding tool, it is related to valve welding technical field.The present application includes bottom plate, the surface of the bottom plate is slidably connected with mounting bracket and the hollow sliding box in the inside, the upper surface of the bottom plate is fixedly connected with installation box, the top of installation box is fixedly connected with welding robot for welding, the upper surface of the bottom plate is fixedly connected with air cylinder, and one end of air cylinder piston rod is fixed with mounting bracket;The side of the sliding box is fixedly connected with suction hood, and the side of the suction hood is fixedly connected with corrugated pipe for air extraction, the side of the sliding box is rotatably connected with penetrating shaft, and one end of the shaft is fixedly connected with top disc.The present application can receive welding slag by sliding box, prevent welding slag from splashing, improve the safety of the scene, the wind power generated by air extractor can quickly cool the welding slag, reduce the time of dangerous source existence, facilitate people to collect and process, and filter air.

Description

Technical Field

[0001] This invention belongs to the field of valve welding technology, and in particular relates to an automated valve welding fixture. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the conveyed medium. Based on their function, they can be divided into shut-off valves, check valves, regulating valves, etc. Since valve manufacturing requires welding between components, welding fixtures are necessary.

[0003] A search revealed a welding machine for valve production disclosed in publication number CN110587189B, which includes a worktable, a chuck support, a chuck, a spindle, a first pulley, a first motor, and a second pulley. Although the above device can handle the gas generated during welding, it produces high-temperature welding slag, which also splashes. If the welding slag is not handled during the welding process, it will require manual cleaning at best, and at worst, the splashed welding slag can easily ignite. Therefore, an automated welding fixture for valves is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an automated valve welding fixture. This invention can use a sliding box to receive welding slag, prevent welding slag from splashing, improve on-site safety, and at the same time use the air force generated by the exhaust fan to quickly cool the welding slag, reduce the time that the hazard source exists, facilitate collection and treatment, and filter the air, thus solving the existing technical problems.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] An automated valve welding fixture, comprising:

[0007] The base plate has a mounting frame and a hollow sliding box slidably connected to its surface. A mounting box is fixedly connected to the upper surface of the base plate, and a welding robot for welding is fixedly connected to the top of the mounting box. A cylinder is fixedly connected to the upper surface of the base plate, and one end of the cylinder piston rod is fixed to the mounting frame. The mounting frame can be moved by the cylinder, which facilitates the installation of parts.

[0008] A ventilation duct is fixedly connected to one side of the sliding box, and a corrugated pipe for air extraction is fixedly connected to one side of the ventilation duct. A through-hole rotating shaft is rotatably connected to one side of the sliding box. A top plate is fixedly connected to one end of the rotating shaft. The top plate is a semi-circular tube with one side inclined. A rotating plate is fixedly connected to the other end of the rotating shaft. A scraper for scraping welding slag from the inner wall of the sliding box is fixedly connected to one side of the rotating plate. A torsion spring is sleeved around the circumference of the rotating shaft. The two ends of the torsion spring are fixed to the rotating shaft and the sliding box, respectively. A mounting base is fixedly connected to one side of the mounting box. A top wheel that works with the top plate is rotatably connected to one end of the mounting base. By installing a rotating scraper inside the sliding box, the top wheel and top plate can drive the scraper to rotate after the sliding box moves, thereby cleaning the welding slag adhering to the inside of the sliding box.

[0009] A gas extraction mechanism is installed inside the mounting box to extract the gas generated during welding.

[0010] A clamping mechanism is provided on top of the mounting bracket to clamp the parts.

[0011] Furthermore, the clamping mechanism includes a mounting shaft, which is rotatably connected to the top inner wall of the mounting frame. One end of the mounting shaft is fixedly connected to a chuck for clamping parts. A drive assembly for driving the mounting shaft to rotate is provided on one side of the mounting frame. The chuck is existing technology and is used to clamp parts.

[0012] Furthermore, the drive assembly includes a motor, which is fixedly connected to one side of the mounting bracket. One end of the motor output shaft and the circumference of the mounting shaft are both fixedly connected to a transmission wheel, and the two transmission wheels are connected in a transmission connection, so that the motor plays a driving role.

[0013] Furthermore, the air extraction mechanism includes an exhaust fan and a filter box. The exhaust fan and the filter box are both fixedly connected to the bottom inner wall of the mounting box. The air intake end of the exhaust fan is fixedly connected to one side of the filter box. The other end of the corrugated pipe passes through the mounting box and is fixedly connected to the other side of the filter box. The filter box is equipped with a filter component for filtering air.

[0014] Furthermore, the filtration assembly includes a filter screen and an activated carbon box, both of which are fixedly connected to the bottom inner wall of the filter box. The filter screen and activated carbon box can be used to filter the extracted air and improve the on-site environment.

[0015] Furthermore, one side of the sliding box is also provided with an anti-slag accumulation mechanism to prevent welding slag from accumulating. The anti-slag accumulation mechanism includes a slider that slides through one side of the sliding box, multiple positioning blocks, two third springs, and multiple wedge blocks. One end of the slider is fixedly connected to a top frame, and a pressure rod is inserted into the slider. The other end of the pressure rod is fixedly connected to a second spring, and the other end of the second spring is fixed to the slider. The multiple positioning blocks and the two third springs are all fixedly connected to the inner wall of one side of the sliding box. The multiple positioning blocks are all located at the top of the top frame, and the other ends of the two third springs are all fixed to the bottom of the top frame. The multiple wedge blocks are all fixedly connected to the circumference of the chuck. Through the setting of the anti-slag accumulation mechanism, while welding the parts, the top frame can be driven to move up and down, and with the cooperation of the positioning blocks, the sliding box vibrates, further preventing welding slag from accumulating on the top of the sliding box.

[0016] Furthermore, a sliding rod is fixedly connected to the side of the sliding box near the mounting box. The sliding rod slides through the mounting box. A first spring is sleeved on the circumference of the sliding rod. The two ends of the first spring are fixed to the mounting box and the sliding box respectively. The first spring is used to reset the sliding box.

[0017] Furthermore, an insertion port is provided on one side of the bottom of the sliding box, into which a collection box for receiving materials is inserted, which can collect welding slag.

[0018] Furthermore, a positioning rod is fixedly connected to one side of the top plate, and two limiting rods that cooperate with the positioning rod are fixedly connected to one side of the sliding box. The limiting rods and positioning rods can limit the rotation angle of the top plate.

[0019] The embodiments of the present invention have the following beneficial effects:

[0020] In this invention, by installing a sliding box for collecting welding slag on the base plate, the welding slag can be collected by the sliding box when welding valves, preventing welding slag from splashing and improving on-site safety.

[0021] In this invention, by using a combination of an exhaust fan and a corrugated pipe, with the corrugated pipe fixedly connected to one side of the sliding box, after the exhaust fan is started, the corrugated pipe uses the sliding box to draw the harmful gases generated during welding into the filter box, reducing the harm of harmful gases to on-site personnel. At the same time, the generated airflow can quickly cool down the welding slag, reducing the time the hazard source exists and making it convenient for people to collect and dispose of it.

[0022] In this invention, by installing a rotatable scraper inside the sliding box, the scraper can be driven to rotate by the top wheel and top plate after the sliding box moves, thereby cleaning the welding slag adhering to the sliding box.

[0023] In this invention, the anti-stacking mechanism enables the top frame to move up and down while welding parts, and with the cooperation of the positioning block, the sliding box vibrates, further preventing welding slag from accumulating on the top of the sliding box.

[0024] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of a first perspective according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a second perspective three-dimensional partial cross-sectional structure according to an embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of a sliding box according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the anti-stack mechanism structure according to an embodiment of the present invention;

[0030] Figure 5 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of point A in the middle.

[0031] In the diagram: 1. Base plate; 2. Mounting frame; 3. Sliding box; 4. Mounting box; 5. Welding robot; 6. Mounting shaft; 7. Chuck; 8. Wedge block; 9. Transmission wheel; 10. Motor; 11. Cylinder; 12. Exhaust fan; 13. Filter box; 14. Filter screen; 15. Corrugated pipe; 16. Exhaust duct; 17. Collection box; 18. Slide rod; 19. First spring; 20. Rotating shaft; 21. Top plate; 22. Torsion spring; 23. Rotating plate; 24. Scraper; 25. Mounting seat; 26. Top wheel; 27. Anti-piling mechanism; 28. Positioning block; 29. ​​Slider; 30. Top frame; 31. Second spring; 32. Pressure rod; 33. Third spring; 34. Limiting rod; 35. Positioning rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0034] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0035] Example 1

[0036] Please see Figures 1-5 As shown, this embodiment provides an automated valve welding fixture, including: a base plate 1, a mounting frame 2 and a hollow sliding box 3 slidably connected to the surface of the base plate 1, a mounting box 4 fixedly connected to the upper surface of the base plate 1, a welding robot 5 fixedly connected to the top of the mounting box 4, the welding robot 5 is existing technology (an industrial robot engaged in welding (including cutting and spraying), its working principle and usage will not be described here, a cylinder 11 fixedly connected to the upper surface of the base plate 1, one end of the piston rod of the cylinder 11 is fixed to the mounting frame 2, the cylinder 11 is used to drive the mounting frame 2 to move, so as to facilitate the picking up or fixing of valve parts on the mounting frame 2;

[0037] A ventilation duct 16 is fixedly connected to one side of the sliding box 3, and a bellows pipe 15 for air extraction is fixedly connected to one side of the ventilation duct 16. The ventilation duct 16 is inclined to prevent air from entering. A through-type rotating shaft 20 is rotatably connected to one side of the sliding box 3. A top plate 21 is fixedly connected to one end of the rotating shaft 20. The top plate 21 is a semi-circular tube with one side inclined. A rotating plate 23 is fixedly connected to the other end of the rotating shaft 20. A scraper 24 for scraping welding slag from the inner wall of the sliding box 3 is fixedly connected to one side of the rotating plate 23. The rotating shaft 20... A torsion spring 22 is fitted around the circumference of the mounting box 4. The two ends of the torsion spring 22 are fixed to the rotating shaft 20 and the sliding box 3, respectively. A mounting base 25 is fixedly connected to one side of the mounting box 4. One end of the mounting base 25 is rotatably connected to a top wheel 26 that works with the top plate 21. When the top plate 21 contacts the top wheel 26 on one side of the mounting box 4, the top plate 21 is pushed by the top wheel 26. Since one side of the top plate 21 is inclined, the rotating shaft 20 can rotate and the scraper 24 is rotated by the rotating plate 23. The scraper 24 cleans the sliding box 3.

[0038] The gas extraction mechanism is installed inside the mounting box 4 to extract the gas generated during welding.

[0039] A clamping mechanism is installed on the top of the mounting bracket 2 to clamp the parts.

[0040] Example 2

[0041] Improvements based on Example 1: See Appendix Figures 1-5 ,include:

[0042] The base plate 1 has a mounting frame 2 and a hollow sliding box 3 slidably connected to its surface. The upper surface of the base plate 1 is fixedly connected to a mounting box 4. The top of the mounting box 4 is fixedly connected to a welding robot 5. The welding robot 5 is an existing technology (an industrial robot engaged in welding (including cutting and spraying)). Its working principle and usage will not be described in detail here. The upper surface of the base plate 1 is fixedly connected to a cylinder 11. One end of the piston rod of the cylinder 11 is fixed to the mounting frame 2. The cylinder 11 is used to drive the mounting frame 2 to move, so as to facilitate the removal or fixing of valve parts on the mounting frame 2.

[0043] A ventilation duct 16 is fixedly connected to one side of the sliding box 3, and a bellows pipe 15 for air extraction is fixedly connected to one side of the ventilation duct 16. The ventilation duct 16 is inclined to prevent air from entering. A through-type rotating shaft 20 is rotatably connected to one side of the sliding box 3. A top plate 21 is fixedly connected to one end of the rotating shaft 20. The top plate 21 is a semi-circular tube with one side inclined. A rotating plate 23 is fixedly connected to the other end of the rotating shaft 20. A scraper 24 for scraping welding slag from the inner wall of the sliding box 3 is fixedly connected to one side of the rotating plate 23. The rotating shaft 20... A torsion spring 22 is fitted around the circumference of the mounting box 4. The two ends of the torsion spring 22 are fixed to the rotating shaft 20 and the sliding box 3, respectively. A mounting base 25 is fixedly connected to one side of the mounting box 4. One end of the mounting base 25 is rotatably connected to a top wheel 26 that works with the top plate 21. When the top plate 21 contacts the top wheel 26 on one side of the mounting box 4, the top plate 21 is pushed by the top wheel 26. Since one side of the top plate 21 is inclined, the rotating shaft 20 can rotate and the scraper 24 is rotated by the rotating plate 23. The scraper 24 cleans the sliding box 3.

[0044] The gas extraction mechanism is installed inside the mounting box 4 to extract the gas generated during welding.

[0045] A clamping mechanism is installed on the top of the mounting bracket 2 to clamp the parts.

[0046] Reference Figure 1 The clamping mechanism includes a mounting shaft 6, which is rotatably connected to the top inner wall of the mounting frame 2. One end of the mounting shaft 6 is fixedly connected to a chuck 7 for clamping parts. The chuck 7 is an existing mechanism used to clamp workpieces, and its specific structure will not be described in detail here. A drive assembly for driving the mounting shaft 6 to rotate is provided on one side of the mounting frame 2. The drive assembly includes a motor 10, which is fixedly connected to one side of the mounting frame 2. One end of the output shaft of the motor 10 and the circumference of the mounting shaft 6 are both fixedly connected to transmission wheels 9. The two transmission wheels 9 are connected in a transmission connection. When the motor 10 starts, it drives the chuck 7 to rotate through the transmission wheels 9, thereby causing the parts to rotate.

[0047] Reference Figure 2 The air extraction mechanism includes an exhaust fan 12 and a filter box 13. Both the exhaust fan 12 and the filter box 13 are fixedly connected to the bottom inner wall of the mounting box 4. The suction end of the exhaust fan 12 is fixedly connected to one side of the filter box 13, and the other end of the corrugated pipe 15 passes through the mounting box 4 and is fixedly connected to the other side of the filter box 13. When the exhaust fan 12 is started, the exhaust fan 12 draws air from the sliding box 3 through the filter box 13 and the corrugated pipe 15, thereby allowing the polluting gases generated during welding to enter the filter box 13 and improve the on-site environment. The filter box 13 is equipped with a filter assembly for filtering air. The filter assembly includes a filter screen 14 and an activated carbon box. Both the filter screen 14 and the activated carbon box are fixedly connected to the bottom inner wall of the filter box 13. When air enters the filter box 13, the filter screen 14 and the activated carbon box in the filter box 13 are used to filter the air.

[0048] Reference Figure 4 The sliding box 3 is also equipped with an anti-slag accumulation mechanism 27 on one side to prevent welding slag accumulation. The anti-slag accumulation mechanism 27 includes a slider 29 that slides through one side of the sliding box 3, multiple positioning blocks 28, two third springs 33, and multiple wedge blocks 8. One end of the slider 29 is fixedly connected to a top frame 30, and a pressure rod 32 is inserted into the slider 29. A rotating sleeve can also be set around the circumference of the pressure rod 32 for easy use. The other end of the pressure rod 32 is fixedly connected to a second spring 31, and the other end of the second spring 31 is fixed to the slider 29. Multiple The positioning block 28 and the two third springs 33 are fixedly connected to the inner wall of one side of the sliding box 3. The multiple positioning blocks 28 are located at the top of the top frame 30. The other ends of the two third springs 33 are fixed to the bottom of the top frame 30. The multiple wedge blocks 8 are fixedly connected to the circumference of the chuck 7. The chuck 7 drives the wedge blocks 8 to rotate. Then the top frame 30 moves under the action of the wedge blocks 8 and is reset under the push of the third springs 33 and contacts the positioning block 28, so that the sliding box 3 vibrates and prevents welding slag from accumulating on the surface of the sliding box 3.

[0049] Reference Figure 3 A sliding rod 18 is fixedly connected to the side of the sliding box 3 near the mounting box 4. The sliding rod 18 slides through the mounting box 4. A first spring 19 is sleeved on the circumference of the sliding rod 18. The two ends of the first spring 19 are fixed to the mounting box 4 and the sliding box 3 respectively. The first spring 19 is used to drive the sliding box 3 to reset. At the same time, the moving sliding box 3 can also improve the flexibility of the chuck 7. An insertion port is opened on one side of the bottom of the sliding box 3. A collection box 17 for receiving materials is inserted into the insertion port. The collection box 17 is used to collect welding slag.

[0050] Reference Figure 5 A positioning rod 35 is fixedly connected to one side of the top plate 21, and two limiting rods 34 that cooperate with the positioning rod 35 are fixedly connected to one side of the sliding box 3. The cooperation between the limiting rod 34 and the positioning rod 35 can prevent the top plate 21 from rotating too much.

[0051] The usage process and working principle of the technical solution of this invention are as follows:

[0052] In use, the chuck 7 is used to fix the part, and then the cylinder 11 is started to push the mounting bracket 2 that fixes the part, so that the part is close to the welding robot 5. As the chuck 7 moves, it moves closer to the sliding box 3 and pushes the sliding box 3 to one side of the mounting box 4, so that the sliding box 3 and the part are both located below the welding robot 5. The motor 10 is started, and the motor 10 drives the chuck 7 to rotate through the transmission wheel 9, thereby causing the part to rotate. At the same time, the welding robot 5 is started, and the welding robot 5 is used to weld the part. The welding slag produced during welding falls into the sliding box 3 and enters the collection box 17 for easy collection and disposal.

[0053] While welding, the exhaust fan 12 is started. The exhaust fan 12 draws air from the sliding box 3 through the filter box 13 and the bellows 15, so that the polluting gas generated during welding enters the filter box 13. The filter screen 14 and activated carbon box in the filter box 13 are used to filter the air, improve the on-site environment, and the airflow generated increases the cooling time of the welding slag and attracts the splashed welding slag.

[0054] While the sliding box 3 moves, it drives the top plate 21 to move. The top plate 21 contacts the top wheel 26 on one side of the mounting box 4. The top wheel 26 pushes the top plate 21. Since one side of the top plate 21 is inclined, the rotating shaft 20 can rotate. The rotating plate 23 drives the scraper 24 to rotate. The scraper 24 cleans the sliding box 3. After welding is completed, the scraper 24 and the rotating shaft 20 are reset under the action of the torsion spring 22 and clean the sliding box 3 again.

[0055] During welding, the chuck 7 rotates, which drives the wedge block 8 to rotate. When the wedge block 8 contacts the pressure rod 32, the pressure rod 32 drives the slider 29 to move downward, which in turn drives the top frame 30 away from the positioning block 28. After the wedge block 8 disengages from the pressure rod 32, the top frame 30 is reset under the push of the third spring 33 and contacts the positioning block 28, causing the sliding box 3 to vibrate and preventing welding slag from accumulating on the surface of the sliding box 3. When the wedge block 8 on the chuck 7 just contacts the pressure rod 32 during its movement, it can push the pressure rod 32 into the slider 29. After the wedge block 8 rotates, the pressure rod 32 is reset under the push of the second spring 31.

[0056] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0057] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A valve automated welding fixture, characterized by, Include: The bottom plate (1), the surface of the bottom plate (1) is slidably connected with the mounting bracket (2) and the hollow sliding box (3), the upper surface of the bottom plate (1) is fixedly connected with the mounting box (4), the top of the mounting box (4) is fixedly connected with the welding robot (5) for welding, the upper surface of the bottom plate (1) is fixedly connected with the air cylinder (11), one end of the air cylinder (11) piston rod is fixed with the mounting bracket (2); One side of the sliding box (3) is fixedly connected with the exhaust hood (16), one side of the exhaust hood (16) is fixedly connected with the corrugated pipe (15) for air extraction, one side of the sliding box (3) is rotatably connected with the penetrating rotating shaft (20), one end of the rotating shaft (20) is fixedly connected with the top disc (21), the top disc (21) is a semicircular pipe with one side inclined, the other end of the rotating shaft (20) is fixedly connected with the rotating plate (23), one side of the rotating plate (23) is fixedly connected with the scraper (24) for scraping the welding slag on the inner wall of the sliding box (3), the circumference of the rotating shaft (20) is sleeved with the torsional spring (22), both ends of the torsional spring (22) are fixed with the rotating shaft (20) and the sliding box (3) respectively, one side of the mounting box (4) is fixedly connected with the mounting seat (25), one end of the mounting seat (25) is rotatably connected with the top wheel (26) used in cooperation with the top disc (21). The air extraction mechanism is arranged in the mounting box (4) to extract the gas generated during welding. The clamping mechanism is arranged on the top of the mounting bracket (2) to clamp the parts.

2. A valve automated welding fixture as claimed in claim 1, wherein, The clamping mechanism includes a mounting shaft (6) rotatably connected to the inner wall of the top of the mounting bracket (2), one end of the mounting shaft (6) is fixedly connected with a chuck (7) for clamping parts, one side of the mounting bracket (2) is provided with a driving assembly for driving the rotation of the mounting shaft (6).

3. A valve automated welding fixture as defined in claim 2, wherein, The driving assembly includes a motor (10) fixedly connected to one side of the mounting bracket (2), one end of the output shaft of the motor (10) and the circumference of the mounting shaft (6) are fixedly connected with a transmission wheel (9), and the two transmission wheels (9) are transmission connected.

4. A valve automated welding fixture as defined in claim 1, wherein, The air extraction mechanism includes an air extractor (12) and a filter box (13), the air extractor (12) and the filter box (13) are fixedly connected to the inner wall of the bottom of the mounting box (4), the air suction end of the air extractor (12) is fixedly communicated with one side of the filter box (13), the other end of the corrugated pipe (15) penetrates through the mounting box (4) and is fixedly communicated with the other side of the filter box (13), and the filter box (13) is provided with a filtering assembly for filtering air.

5. A valve automated welding fixture as defined in claim 4, wherein, The filtering assembly includes a filter screen (14) and an activated carbon box, the filter screen (14) and the activated carbon box are fixedly connected to the inner wall of the bottom of the filter box (13).

6. A valve automated welding fixture as defined in claim 1, wherein, The side of the sliding box (3) is also provided with anti-piling mechanism (27) for preventing slag accumulation, the anti-piling mechanism (27) comprises sliding block (29) which is slidingly penetrated through the side of the sliding box (3), a plurality of positioning blocks (28), two third springs (33) and a plurality of wedge blocks (8), one end of the sliding block (29) is fixedly connected with the top frame (30), the sliding block (29) is inserted with the pressing rod (32), the other end of the pressing rod (32) is fixedly connected with the second spring (31), the other end of the second spring (31) is fixed with the sliding block (29), a plurality of positioning blocks (28) and two third springs (33) are fixedly connected with the inner wall of the side of the sliding box (3), a plurality of positioning blocks (28) are located on the top of the top frame (30), the other end of the two third springs (33) is fixed with the bottom of the top frame (30), a plurality of wedge blocks (8) are fixedly connected with the circumference of the chuck (7).

7. A valve automated welding fixture as defined in claim 1, wherein, The side of the sliding box (3) is also provided with anti-piling mechanism (27) for preventing slag accumulation, the anti-piling mechanism (27) comprises sliding block (29) which is slidingly penetrated through the side of the sliding box (3), a plurality of positioning blocks (28), two third springs (33) and a plurality of wedge blocks (8), one end of the sliding block (29) is fixedly connected with the top frame (30), the sliding block (29) is inserted with the pressing rod (32), the other end of the pressing rod (32) is fixedly connected with the second spring (31), the other end of the second spring (31) is fixed with the sliding block (29), a plurality of positioning blocks (28) and two third springs (33) are fixedly connected with the inner wall of the side of the sliding box (3), a plurality of positioning blocks (28) are located on the top of the top frame (30), the other end of the two third springs (33) is fixed with the bottom of the top frame (30), a plurality of wedge blocks (8) are fixedly connected with the circumference of the chuck (7).

8. A valve automated welding fixture as defined in claim 1, wherein, The side of the sliding box (3) is also provided with anti-piling mechanism (27) for preventing slag accumulation, the anti-piling mechanism (27) comprises sliding block (29) which is slidingly penetrated through the side of the sliding box (3), a plurality of positioning blocks (28), two third springs (33) and a plurality of wedge blocks (8), one end of the sliding block (29) is fixedly connected with the top frame (30), the sliding block (29) is inserted with the pressing rod (32), the other end of the pressing rod (32) is fixedly connected with the second spring (31), the other end of the second spring (31) is fixed with the sliding block (29), a plurality of positioning blocks (28) and two third springs (33) are fixedly connected with the inner wall of the side of the sliding box (3), a plurality of positioning blocks (28) are located on the top of the top frame (30), the other end of the two third springs (33) is fixed with the bottom of the top frame (30), a plurality of wedge blocks (8) are fixedly connected with the circumference of the chuck (7).

9. A valve automated welding fixture as defined in claim 1, wherein, ​

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