Semi-automatic electric arc welding fixing device for valve flange

Abstract

The invention discloses a semi-automatic arc welding fixing device for a valve flange, and relates to the technical field of semi-automatic arc welding. The semi-automatic electric arc welding fixing device for the valve flange comprises a bottom plate, the top of the bottom plate is connected with two symmetrically-arranged moving plates through a first moving mechanism, and the opposite side walls of the two first moving plates are connected with two symmetrically-arranged first V-shaped plates through a second moving mechanism; the side wall of each first V-shaped plate is fixedly connected with two sets of symmetrically-arranged first fixing blocks. According to the semi-automatic electric arc welding fixing device for the valve flange, centered clamping limiting and end face alignment can be conveniently conducted on the valve and the flange, using is more convenient and faster, and the subsequent welding quality is guaranteed; the device is simple in structure, convenient to clean a welding seam between the valve and the flange, convenient to detect the size of the welding seam between the valve and the flange, and capable of ensuring the subsequent welding quality after determining whether the size of the welding seam is within a required range or not.

Description

Technical Field

[0001] The present invention relates to the technical field of semi-automatic arc welding, and particularly to a welding fixing device for semi-automatic arc welding of valve flanges. Background Technique

[0002] Valves can be manufactured through intelligent manufacturing equipment industry, and with the development of the manufacturing industry, this manufacturing method is gradually becoming a trend, which is of great significance to the innovation of the valve industry and can improve the efficiency and quality of valve manufacturing. During the manufacturing process of valves, semi-automatic arc welding is required to weld the valves and flanges. When welding, a fixing device is needed to fix the valves and flanges.

[0003] However, when the existing welding fixing device for semi-automatic arc welding of valve flanges is in use, it is not convenient to center and clamp the valves and flanges and make their end faces flush, which affects the fixing effect and thus the quality of subsequent welding. At the same time, it is not convenient to clean the welds of the valves and flanges, which also affects the quality of subsequent welding. Moreover, it is not convenient to detect the size of the welds of the valves and flanges. Whether it is too large or too small will also affect the quality of subsequent welding. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding fixing device for semi-automatic arc welding of valve flanges to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A welding fixing device for semi-automatic arc welding of valve flanges, including a bottom plate. The top of the bottom plate is connected with two symmetrically arranged moving plates through a first moving mechanism, and the opposite side walls of the two first moving plates are connected with two symmetrically arranged first V-shaped plates through a second moving mechanism. Each side wall of the first V-shaped plates is fixedly connected with two groups of symmetrically arranged first fixing blocks, and each side wall of the first fixing blocks is fixedly connected with a first motor. The output end of the first motor is fixedly connected with a first roller arranged in a V shape. The opposite side walls of the two moving plates are connected with two groups of symmetrically arranged second V-shaped plates through a third moving mechanism. Each side wall of the second V-shaped plates is fixedly connected with two pairs of second fixing blocks, and each side wall of the second fixing blocks is fixedly connected with a second motor. The output end of the second motor is fixedly connected with a second roller. And a baffle is fixedly connected to the side wall of one of the first V-shaped plates. A pushing mechanism for pushing the valve is arranged on the top of the bottom plate. A cleaning mechanism for cleaning the weld is arranged on the side wall of one of the second V-shaped plates, and a detection mechanism for detecting the size of the weld is arranged on the cleaning mechanism.

[0006] Preferably, the pushing mechanism includes a first fixing plate fixedly connected to the top of the bottom plate, and two symmetrically arranged sleeve rods are fixedly connected to the side wall of the first fixing plate. A sleeve is sleeved on the side wall of each sleeve rod, the other end of the sleeve is fixedly connected to a pushing plate, and a first spring is sleeved on the side wall of each sleeve. The movement of the pushing plate is pushed by a pushing component.

[0007] Preferably, the pushing component includes a support block fixedly connected to the side wall of the first V-shaped plate, and two symmetrically arranged T-shaped guide rods are inserted into the top of the support block. The lower end of the T-shaped guide rod is fixedly connected to a moving rod, and the bottom of the moving rod is fixedly connected to a first pushing block. An inclined groove is formed in the side wall of the first pushing block, and a first pushing pin is fixedly connected to the side wall of the pushing plate and is inserted into the inclined groove. A second spring is sleeved on the side wall of each T-shaped guide rod. A second pushing block is fixedly connected to the side wall of the second V-shaped plate, and the second pushing block includes an inclined surface.

[0008] Preferably, the cleaning mechanism includes a connecting frame fixedly connected to the side wall of the second V-shaped plate, and two symmetrically arranged connecting rods are fixedly connected to the side wall of the connecting frame. The other end of the connecting rod is fixedly connected to a mounting block, and a brush is fixedly connected to the side wall of the mounting block.

[0009] Preferably, the detection mechanism includes a sliding rod inserted into the side wall of the mounting block, and a tapered rod is fixedly connected to one end of the sliding rod. An arc-shaped scale plate is fixedly connected to the side wall of the mounting block, and a vision sensor is fixedly connected to the side wall of the mounting block. A pointer is rotatably connected to the side wall of the mounting block through a rotating mechanism, and a reset mechanism is arranged between the sliding rod and the mounting block.

[0010] Preferably, the rotating mechanism includes a connecting block fixedly connected to the side wall of the mounting block, and a rotating shaft is rotatably connected to the bottom of the connecting block. The pointer is fixed to the lower end of the rotating shaft, a sliding groove is formed in the top of the pointer, and a second pushing pin is fixedly connected to the top of the sliding rod and is inserted into the sliding groove.

[0011] Preferably, the reset mechanism includes a fixing ring fixedly sleeved on the side wall of the sliding rod, and a third spring is sleeved on the side wall of the sliding rod.

[0012] Preferably, the moving mechanism includes two symmetrically arranged second fixing plates fixedly connected to the top of the bottom plate, and guide rods are fixedly connected to the opposite side walls of the two second fixing plates. The moving plate is sleeved on the side wall of the guide rod, and a double-headed lead screw is rotatably connected to the opposite side walls of the two second fixing plates. The moving plate is threadedly connected to the side wall of the double-headed lead screw. A third motor is fixedly connected to the side wall of the second fixing plate, and the output end of the third motor is fixed to one end of the double-headed lead screw.

[0013] Preferably, the second moving mechanism includes two symmetrically arranged first fixing rods fixedly connected to the opposite side walls of the two second fixing plates, and the moving plate is sleeved on the side wall of the first fixing rod. Two symmetrically arranged first L-shaped plates are sleeved on the side wall of the first fixing rod. The first V-shaped plate is fixed to the top of the first L-shaped plate, and two symmetrically arranged fourth springs are sleeved on the side wall of each first fixing rod.

[0014] Preferably, the third moving mechanism includes two symmetrically arranged second fixing rods fixedly connected to the opposite side walls of the two second fixing plates, and the moving plate is sleeved on the side wall of the second fixing rod. Two symmetrically arranged second L-shaped plates are sleeved on the side wall of the second fixing rod. The second V-shaped plate is fixed to the top of the second L-shaped plate, and fifth springs are sleeved on the side wall of each second fixing rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] For this semi-automatic arc welding fixing device for valve flanges, by setting a pushing mechanism, a cleaning mechanism, a detection mechanism, etc., it is convenient to center, clamp, limit and align the end faces of the valve and the flange, making it more convenient and fast to use, and ensuring the quality of subsequent welding; it is convenient to clean the weld between the valve and the flange, and convenient to detect the size of the weld between the valve and the flange. After determining whether the size of the weld is within the required range, the quality of subsequent welding is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a schematic diagram of the overall structure of the present invention from another perspective;

[0019] Figure 3 is Figure 1 an enlarged schematic diagram of part A in

[0020] Figure 4 is Figure 2 an enlarged schematic diagram of part B in

[0021] Figure 5 is Figure 3 an enlarged schematic diagram of part C in

[0022] Figure 6 is Figure 4 an enlarged schematic diagram of part D in

[0023] Figure 7 is Figure 6 an enlarged schematic diagram of part E in

[0024] In the figure: 1, bottom plate; 201, connecting frame; 202, connecting rod; 203, mounting block; 204, brush; 301, sliding rod; 302, tapered rod; 303, scale plate; 304, vision sensor; 305, pointer; 401, fixing ring; 402, third spring; 501, connecting block; 502, rotating shaft; 503, chute; 504, second push pin; 601, first fixing plate; 602, push plate; 603, sleeve rod; 604, sleeve; 605, first spring; 701, support block; 702, T-shaped guide rod; 703, moving rod; 704, second spring; 705, first push block; 706, inclined groove; 707, first push pin; 708, second push block; 709, inclined surface; 801, second fixing plate; 802, guide rod; 803, third motor; 804, double-headed lead screw; 901, first fixing rod; 902, first L-shaped plate; 903, fourth spring; 1001, second fixing rod; 1002, second L-shaped plate; 1003, fifth spring; 11, moving plate; 12, first V-shaped plate; 13, first fixing block; 14, first motor; 15, first roller; 16, second V-shaped plate; 17, second fixing block; 18, second motor; 19, second roller; 20, baffle plate. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1 - 7, the present invention provides a semi-automatic arc welding fixing device for valve flanges, including a bottom plate 1. The top of the bottom plate 1 is connected with two symmetrically arranged moving plates 11 through a first moving mechanism. The opposite side walls of the two first moving plates 11 are connected with two symmetrically arranged first V-shaped plates 12 through a second moving mechanism. Each side wall of the first V-shaped plates 12 is fixedly connected with two groups of symmetrically arranged first fixing blocks 13. Each side wall of the first fixing blocks 13 is fixedly connected with a first motor 14. The output end of the first motor 14 is fixedly connected with a first roller 15 arranged in a V shape. The opposite side walls of the two moving plates 11 are connected with two groups of symmetrically arranged second V-shaped plates 16 through a third moving mechanism. Each side wall of the second V-shaped plates 16 is fixedly connected with two pairs of second fixing blocks 17. Each side wall of the second fixing blocks 17 is fixedly connected with a second motor 18. The output end of the second motor 18 is fixedly connected with a second roller 19. The side wall of one of the first V-shaped plates 12 is fixedly connected with a baffle 20. The top of the bottom plate 1 is provided with a pushing mechanism for pushing the valve. The side wall of one of the second V-shaped plates 16 is provided with a cleaning mechanism for cleaning the weld seam, and the cleaning mechanism is provided with a detection mechanism for detecting the size of the weld seam, which is convenient for centering, clamping, limiting and end face alignment of the valve and the flange, making it more convenient and fast to use, and ensuring the quality of subsequent welding; it is convenient to clean the weld seam between the valve and the flange, and convenient to detect the size of the weld seam between the valve and the flange. After determining whether the size of the weld seam is within the required range, the quality of subsequent welding is ensured.

[0027] Please refer to Figure 2 , the pushing mechanism includes a first fixing plate 601 fixedly connected to the top of the bottom plate 1. The side wall of the first fixing plate 601 is fixedly connected with two symmetrically arranged sleeve rods 603. Each sleeve rod 603 is sleeved with a sleeve 604. The other end of the sleeve 604 is fixedly connected with a pushing plate 602. Each sleeve 604 is sleeved with a first spring 605. The movement of the pushing plate 602 is pushed by a pushing component. When centering, clamping and limiting one end of the valve, the pushing plate 602 is pushed by the pushing component to move, and the end of the valve is pushed against the side wall of the baffle 20 to ensure that the end faces of the valve and the flange are flush.

[0028] Please refer to Figure 2 and Figure 4, the pushing component includes a support block 701 fixedly connected to the side wall of the first V-shaped plate 12. Two symmetrically arranged T-shaped guide rods 702 are inserted into the top of the support block 701. The lower end of the T-shaped guide rod 702 is fixedly connected to a moving rod 703, and the bottom of the moving rod 703 is fixedly connected to a first pushing block 705. An inclined groove 706 is formed in the side wall of the first pushing block 705. A first pushing pin 707 is fixedly connected to the side wall of the pushing plate 602, and the first pushing pin 707 is inserted into the inclined groove 706. A second spring 704 is sleeved on the side wall of each T-shaped guide rod 702. A second pushing block 708 is fixedly connected to the side wall of the second V-shaped plate 16, and the second pushing block 708 includes an inclined surface 709. When the moving plate 11 continues to move, the second L-shaped plate 1002 and the second V-shaped plate 16 can be pushed to continue moving through the fifth spring 1003, so that the second roller 19 contacts the side wall of one end of the valve. At this time, the second pushing block 708 can be driven to move, so that the moving rod 703 gradually disengages from the inclined surface 709, and the moving rod 703 can move downward under the action of the second spring 704. When the moving rod 703 moves downward, the first pushing block 705 can be driven to move downward. At the same time, the first pushing pin 707 can move upward along the inclined groove 706, thereby pushing the pushing plate 602 to move.

[0029] Please refer to Figure 6 , the cleaning mechanism includes a connecting frame 201 fixedly connected to the side wall of the second V-shaped plate 16. Two symmetrically arranged connecting rods 202 are fixedly connected to the side wall of the connecting frame 201. The other end of the connecting rod 202 is fixedly connected to a mounting block 203, and a brush 204 is fixedly connected to the side wall of the mounting block 203. After the valve and the flange are clamped and limited, by starting the first motor 14, the rotation of the first motor 14 drives the rotation of the first roller 15, thereby driving the rotation of the flange. Start the second motor 18, and the rotation of the second motor 18 drives the rotation of the second roller 19, thereby driving the rotation of the valve. At this time, the weld between the valve and the flange can be cleaned by the brush 204 to ensure the quality of subsequent welding.

[0030] Please refer to Figure 6 and Figure 7, The detection mechanism includes a sliding rod 301 inserted into the side wall of the mounting block 203. One end of the sliding rod 301 is fixedly connected to a tapered rod 302. The side wall of the mounting block 203 is fixedly connected with a scale plate 303 arranged in an arc shape, and the side wall of the mounting block 203 is fixedly connected with a vision sensor 304. The side wall of the mounting block 203 is rotatably connected with a pointer 305 through a rotating mechanism. A reset mechanism is arranged between the sliding rod 301 and the mounting block 203. After the valve and the flange are clamped and limited, the tapered rod 302 abuts against the weld. When the weld is too large or too small, the tapered rod 302 and the sliding rod 301 will move under the action of the reset mechanism. When the sliding rod 301 moves, it can make the pointer 305 rotate through the rotating mechanism. At this time, the vision sensor 304 can detect the scale on the scale plate 303 indicated by the pointer 305, so as to determine whether the size of the weld is within the required range and ensure the quality of subsequent welding.

[0031] Please refer to Figure 7 , The rotating mechanism includes a connecting block 501 fixedly connected to the side wall of the mounting block 203. The bottom of the connecting block 501 is rotatably connected with a rotating shaft 502. The pointer 305 is fixedly connected to the lower end of the rotating shaft 502. A sliding groove 503 is opened at the top of the pointer 305. The top of the sliding rod 301 is fixedly connected with a second push pin 504, and the second push pin 504 is inserted into the sliding groove 503. When the sliding rod 301 moves, it can drive the second push pin 504 to slide in the sliding groove 503, thereby pushing the pointer 305 to rotate along the rotating shaft 502.

[0032] Please refer to Figure 6 , The reset mechanism includes a fixing ring 401 fixedly sleeved on the side wall of the sliding rod 301, and a third spring 402 is sleeved on the side wall of the sliding rod 301, which plays a role in guiding and resetting the movement of the sliding rod 301.

[0033] Please refer to Figure 3 , The moving mechanism includes two symmetrically arranged second fixing plates 801 fixedly connected to the top of the bottom plate 1. The opposite side walls of the two second fixing plates 801 are fixedly connected with guide rods 802. The moving plate 11 is sleeved on the side walls of the guide rods 802. The opposite side walls of the two second fixing plates 801 are rotatably connected with a double-headed lead screw 804. The moving plate 11 is threadedly connected to the side wall of the double-headed lead screw 804. The side wall of the second fixing plate 801 is fixedly connected with a third motor 803, and the output end of the third motor 803 is fixedly connected to one end of the double-headed lead screw 804. Starting the third motor 803, the rotation of the third motor 803 drives the rotation of the double-headed lead screw 804, thereby driving the two moving plates 11 to move closer to each other.

[0034] Please refer to Figure 3, the second moving mechanism includes two symmetrically arranged first fixing rods 901 fixedly connected to the opposite side walls of the two second fixing plates 801, and the moving plate 11 is sleeved on the side wall of the first fixing rod 901. Two symmetrically arranged first L-shaped plates 902 are sleeved on the side wall of the first fixing rod 901. The first V-shaped plate 12 is fixed to the top of the first L-shaped plate 902, and two symmetrically arranged fourth springs 903 are sleeved on the side wall of each first fixing rod 901. When the two moving plates 11 move closer to each other, the two first L-shaped plates 902 can be driven to move closer to each other through the fourth springs 903, thereby driving the two first V-shaped plates 12 to move closer to each other.

[0035] Please refer to Figure 3 , the third moving mechanism includes two symmetrically arranged second fixing rods 1001 fixedly connected to the opposite side walls of the two second fixing plates 801, and the moving plate 11 is sleeved on the side wall of the second fixing rod 1001. Two symmetrically arranged second L-shaped plates 1002 are sleeved on the side wall of the second fixing rod 1001. The second V-shaped plate 16 is fixed to the top of the second L-shaped plate 1002, and fifth springs 1003 are sleeved on the side wall of each second fixing rod 1001. When the two moving plates 11 move closer to each other, the second L-shaped plates 1002 and the second V-shaped plate 16 can be pushed to continue moving through the fifth springs 1003.

[0036] Working principle: When in use, when semi-automatic arc welding is required for the valve and the flange, place the flange between the two first V-shaped plates 12 and between the first rollers 15, and place one end of the valve between the two second V-shaped plates 16. Then, start the third motor 803. The rotation of the third motor 803 drives the rotation of the double-headed lead screw 804, thereby driving the two moving plates 11 to move closer to each other. At the same time, the two first L-shaped plates 902 can be driven to move closer to each other through the fourth springs 903, thereby driving the two first V-shaped plates 12 to move closer to each other. At the same time, when the two moving plates 11 move closer to each other, the two second L-shaped plates 1002 can be driven to move closer to each other through the fifth springs 1003, thereby driving the two second V-shaped plates 16 to move closer to each other. When the first rollers 15 abut against the side wall of the flange, centering and limiting can be performed on it, and at the same time, the fourth springs 903 are gradually compressed.

[0037] When the moving plate 11 continues to move, it can push the second L-shaped plate 1002 and the second V-shaped plate 16 to continue moving through the fifth spring 1003, so that the second roller 19 contacts the side wall of one end of the valve. At this time, it can drive the second push block 708 to move, so that the moving rod 703 gradually disengages from the inclined surface 709, and the moving rod 703 can move downward under the action of the second spring 704. When the moving rod 703 moves downward, it can drive the first push block 705 to move downward. At the same time, the first push pin 707 can move upward along the inclined groove 706, thereby pushing the push plate 602 to move. At the same time, the first spring 605 is compressed, thereby pushing one end of the valve to abut against the side wall of the baffle 20, ensuring that the end faces of the valve and the flange are flush. When the moving plate 11 continues to move, the fifth spring 1003 is compressed, so that the second roller 19 clamps and limits the side wall of one end of the valve, thereby facilitating the centering clamping and limiting of the valve and the flange, making it more convenient and fast to use, and ensuring the quality of subsequent welding.

[0038] After the clamping and limiting of the valve and the flange are completed, by starting the first motor 14, the rotation of the first motor 14 drives the rotation of the first roller 15, thereby driving the rotation of the flange. Start the second motor 18, and the rotation of the second motor 18 drives the rotation of the second roller 19, thereby driving the rotation of the valve. At this time, the weld between the valve and the flange can be cleaned by the brush 204 to ensure the quality of subsequent welding.

[0039] After the clamping and limiting of the valve and the flange are completed, the conical rod 302 abuts against the weld. At the same time, the third spring 402 is compressed. When the weld is too large, the conical rod 302 and the sliding rod 301 can move in the opposite direction away from the mounting block 203 under the action of the third spring 402. When the weld is too small, it can push the sliding rod 301 to move in the direction close to the mounting block 203. At the same time, the third spring 402 is further compressed. And when the sliding rod 301 moves, it can drive the second push pin 504 to slide in the chute 503, thereby pushing the pointer 305 to rotate along the rotating shaft 502. At this time, the visual sensor 304 can detect the scale on the scale plate 303 indicated by the pointer 305, and then it can be determined whether the size of the weld is within the required range to ensure the quality of subsequent welding.

[0040] After the detection is completed, the weld between the valve and the flange can be spot-welded by arc welding. Then, start the second motor 18, and the rotation of the second motor 18 drives the rotation of the second roller 19, thereby driving the rotation of the valve and the flange. Then, the weld between the valve and the flange can be fully welded by arc welding, which is more convenient and fast.

[0041] All the standard parts used in the present invention can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt the conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0042] The present invention and its embodiments have been described above. Such description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design, without creative efforts, structural forms and embodiments similar to the technical solution without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A semi-automatic arc welding fixing device for valve flanges, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is connected with two symmetrically arranged moving plates (11) through a first moving mechanism, and the opposite side walls of the two first moving plates (11) are connected with two symmetrically arranged first V-shaped plates (12) through a second moving mechanism. The side walls of each of the first V-shaped plates (12) are fixedly connected with two groups of symmetrically arranged first fixing blocks (13), and the side walls of each group of first fixing blocks (13) are fixedly connected with a first motor (14). The output end of the first motor (14) is fixedly connected with a first roller (15) arranged in a V shape. The opposite side walls of the two moving plates (11) are connected with two groups of symmetrically arranged second V-shaped plates (16) through a third moving mechanism. The side walls of each group of the second V-shaped plates (16) are fixedly connected with two pairs of second fixing blocks (17), and the side walls of each group of second fixing blocks (17) are fixedly connected with a second motor (18). The output end of the second motor (18) is fixedly connected with a second roller (19). The side wall of one of the first V-shaped plates (12) is fixedly connected with a baffle (20). A pushing mechanism for pushing the valve is arranged on the top of the bottom plate (1). A cleaning mechanism for cleaning the weld seam is arranged on the side wall of one of the second V-shaped plates (16), and a detection mechanism for detecting the size of the weld seam is arranged on the cleaning mechanism.

2. The semi-automatic arc welding fixing device for a valve flange according to claim 1, characterized in that: The pushing mechanism includes a first fixing plate (601) fixedly connected to the top of the bottom plate (1), and two symmetrically arranged sleeve rods (603) are fixedly connected to the side wall of the first fixing plate (601). A sleeve (604) is sleeved on the side wall of each of the sleeve rods (603). The other end of the sleeve (604) is fixedly connected with a pushing plate (602). A first spring (605) is sleeved on the side wall of each of the sleeve rods (604). The movement of the pushing plate (602) is pushed by a pushing component.

3. A semi-automatic arc welding fixing device for a valve flange according to claim 2, characterized in that: The pushing component includes a support block (701) fixedly connected to the side wall of the first V-shaped plate (12). Two symmetrically arranged T-shaped guide rods (702) are inserted into the top of the support block (701). The lower end of the T-shaped guide rod (702) is fixedly connected with a moving rod (703), and the bottom of the moving rod (703) is fixedly connected with a first pushing block (705). An inclined groove (706) is formed in the side wall of the first pushing block (705). A first pushing pin (707) is fixedly connected to the side wall of the pushing plate (602), and the first pushing pin (707) is inserted into the inclined groove (706). A second spring (704) is sleeved on the side wall of each of the T-shaped guide rods (702). A second pushing block (708) is fixedly connected to the side wall of the second V-shaped plate (16), and the second pushing block (708) includes an inclined surface (709).

4. A semi-automatic arc welding fixing device for a valve flange according to claim 1, characterized in that: The cleaning mechanism includes a connecting frame (201) fixedly connected to the side wall of the second V-shaped plate (16), and two symmetrically arranged connecting rods (202) are fixedly connected to the side wall of the connecting frame (201). The other end of the connecting rod (202) is fixedly connected with a mounting block (203), and a brush (204) is fixedly connected to the side wall of the mounting block (203).

5. A semi-automatic arc welding fixing device for a valve flange according to claim 4, characterized in that: The detection mechanism includes a sliding rod (301) inserted into the side wall of the mounting block (203), and a tapered rod (302) is fixedly connected to one end of the sliding rod (301). An arc-shaped scale plate (303) is fixedly connected to the side wall of the mounting block (203), and a vision sensor (304) is fixedly connected to the side wall of the mounting block (203). A pointer (305) is rotatably connected to the side wall of the mounting block (203) through a rotating mechanism, and a reset mechanism is arranged between the sliding rod (301) and the mounting block (203).

6. A semi-automatic arc welding fixing device for a valve flange according to claim 5, characterized in that: The rotating mechanism includes a connecting block (501) fixedly connected to the side wall of the mounting block (203), and a rotating shaft (502) is rotatably connected to the bottom of the connecting block (501). The pointer (305) is fixed to the lower end of the rotating shaft (502). A sliding groove (503) is formed at the top of the pointer (305). A second push pin (504) is fixedly connected to the top of the sliding rod (301), and the second push pin (504) is inserted into the sliding groove (503).

7. A semi-automatic arc welding fixing device for valve flanges according to claim 5, characterized in that: The reset mechanism includes a fixing ring (401) fixedly sleeved on the side wall of the sliding rod (301), and a third spring (402) is sleeved on the side wall of the sliding rod (301).

8. A semi-automatic arc welding fixing device for a valve flange according to claim 1, characterized in that: The moving mechanism includes two symmetrically arranged second fixing plates (801) fixedly connected to the top of the bottom plate (1). Guide rods (802) are fixedly connected to the opposite side walls of the two second fixing plates (801). The moving plate (11) is sleeved on the side wall of the guide rod (802). A double-headed lead screw (804) is rotatably connected to the opposite side walls of the two second fixing plates (801). The moving plate (11) is threadedly connected to the side wall of the double-headed lead screw (804). A third motor (803) is fixedly connected to the side wall of the second fixing plate (801), and the output end of the third motor (803) is fixed to one end of the double-headed lead screw (804).

9. The semi-automatic arc welding fixing device for a valve flange according to claim 1, characterized in that: The second moving mechanism includes two symmetrically arranged first fixing rods (901) fixedly connected to the opposite side walls of the two second fixing plates (801). The moving plate (11) is sleeved on the side wall of the first fixing rod (901). Two symmetrically arranged first L-shaped plates (902) are sleeved on the side wall of the first fixing rod (901). The first V-shaped plate (12) is fixed to the top of the first L-shaped plate (902), and two symmetrically arranged fourth springs (903) are sleeved on the side wall of each first fixing rod (901).

10. A semi-automatic arc welding fixing device for a valve flange according to claim 1, characterized in that: The third moving mechanism includes two symmetrically arranged second fixing rods (1001) fixedly connected to the opposite side walls of the two second fixing plates (801), and the moving plate (11) is sleeved on the side wall of the second fixing rod (1001). Two symmetrically arranged second L-shaped plates (1002) are sleeved on the side wall of the second fixing rod (1001). The second V-shaped plate (16) is fixed to the top of the second L-shaped plate (1002), and a fifth spring (1003) is sleeved on the side wall of each second fixing rod (1001).

Images