Instrument pipe fitting valve welding rotary table

Abstract

The invention relates to the technical field of valve welding, in particular to an instrument pipe fitting valve welding rotary table which comprises a base, and a clamping fixing mechanism, a linkage fixing mechanism and a rotary welding mechanism are arranged on the base. The linkage fixing mechanism comprises a positioning seat, a square groove is formed in the top end of the positioning seat and used for containing a square valve body, telescopic grooves are formed in the positions, corresponding to the two sides of the groove, of the top end of the positioning seat, the two telescopic grooves are obliquely and symmetrically formed, and telescopic plates are slidably connected to the inner walls of the two telescopic grooves. The top ends of the two telescopic plates are fixedly connected with pressing blocks making contact with the top end of the square valve body. The conical pipe can be adsorbed and fixed on the circular seat, and the axial lead of the circular seat and the axial lead of the square valve body are on the same straight line, so that when the conical pipe moves, accurate butt joint can be realized, the condition of adjusting the position back and forth is avoided, the operation is simplified, and the subsequent welding efficiency can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of valve welding, in particular to a welding turntable for instrument pipe valves. Background Art

[0002] Instrument pipe fittings and valves are pipeline accessories used to control medium flow direction, pressure, flow and other parameters in pipeline systems. Their core function is to achieve precise control of the conveying medium (such as liquid, gas, powder, etc.) by changing the passage cross-section or medium flow direction. When welding instrument pipe fittings and valves in production, it is necessary to use a welding turntable to adjust the valve angle so as to perform welding processing at the required position. During welding, welding operations can be performed through automatic or semi-automatic arcs. Automatic arc welding is an arc welding technology that uses automated equipment to achieve welding parameter control and operation execution, while semi-automatic arc welding is a welding method in which some links are completed automatically by machines and some links require manual operation.

[0003] In the prior art, when producing instrument pipe valves, it is necessary to weld a tapered tube to a square valve body. Therefore, it is necessary to clamp and fix the tapered tube to the square valve body to ensure the stability of the square valve body and the tapered tube. Then, an arc welding gun is used to weld the gap between the square valve body and the tapered tube. When welding the square valve body and the tapered tube, the square valve body and the tapered tube need to be clamped and fixed separately, and then the two are manually combined together. However, during the combination, it is impossible to ensure that the axis center lines of the square valve body and the tapered tube are in the same straight line. Therefore, it is necessary to adjust back and forth, which makes the operation inconvenient, thereby affecting the subsequent welding efficiency. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an instrument pipe valve welding turntable.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: an instrument pipe fitting valve welding turntable, comprising a base, on which a clamping and fixing mechanism, a linkage fixing mechanism and a rotating welding mechanism are provided;

[0006] The linkage fixing mechanism includes a positioning seat, a square groove is provided on the top of the positioning seat for placing the square valve body, and telescopic grooves are provided on both sides of the corresponding groove at the top of the positioning seat. The two telescopic grooves are arranged obliquely symmetrically, and the inner walls of the two telescopic grooves are slidably connected to telescopic plates. The tops of the two telescopic plates are fixedly connected to pressure blocks that contact the top of the square valve body, and the pressure blocks are used to clamp and fix the square valve body;

[0007] The clamping and fixing mechanism includes a circular seat, and there are two circular seats. The two circular seats are close to each other and have a conical groove. The two conical grooves are used to place the conical tube. The circular seat moves toward the direction close to the square valve body and makes the conical tube in close contact with both ends of the square valve body, while completing the clamping and fixing of the conical tube and the square valve body.

[0008] Preferably, the clamping and fixing mechanism also includes movable vertical plates slidably connected to both sides of the top of the base, and the two movable vertical plates are fixedly connected to a movable column at one end close to each other, and the two movable columns and the two circular seats are rotatably connected respectively. It also includes a support seat fixedly connected to the inner side of the corresponding movable vertical plate at the top of the base, and the two support seats are fixedly connected to an electric push rod at one end away from each other, and the telescopic ends of the two electric push rods are fixedly connected to the two movable vertical plates respectively.

[0009] Preferably, the clamping and fixing mechanism also includes adsorption holes penetrated on the four sides of the inner wall of the conical groove, the outer wall of the circular seat is fixedly connected with an annular connecting pipe through a pipe, the two groups of the annular connecting pipes and the adsorption holes are respectively connected, and the top ends of the two circular seats are fixedly connected with an air pump, and the two air pumps and the two annular connecting pipes are respectively connected through pipes.

[0010] Preferably, the linkage fixing mechanism also includes a fixing ring rotatably connected to the outer wall of the movable column, and connecting rods are fixedly connected on both sides of the outer walls of the two fixing rings, and the two groups of connecting rods are fixedly connected to guide rods at one end close to each other, and the two groups of guide rods are fixedly connected to limiting plates at one end close to each other.

[0011] Preferably, the linkage fixing mechanism also includes a square hole passing through the telescopic slot at one end away from each other, and the first pulley group and the second pulley group are fixedly installed on both sides of the inner walls of the two square holes, and each group of the first pulley group and the second pulley group are arranged vertically.

[0012] Preferably, the bottom ends of the two telescopic plates are fixedly connected with steel wire ropes, and springs are symmetrically fixedly connected between each group of telescopic plates and telescopic slots. The steel wire ropes pass between the rollers on the first pulley group and the second pulley group, and the two steel wire ropes are fixedly connected to the two guide rods on the lower side respectively.

[0013] Preferably, the rotary welding mechanism includes a support plate fixedly connected to the inner side of the support seat corresponding to the top of the base, the tops of the two groups of support plates are fixedly connected to support rings, the two support rings are rotatably connected to the second gear ring at one end close to each other, the inner walls of the two second gear rings are fixedly connected to connecting rings, the two connecting rings are fixedly connected to the positioning seat, the outer diameters of the two second gear rings are meshed with second gears, the two second gears are fixedly connected to drive shafts, and the drive shafts are rotatably connected to the support seat.

[0014] Preferably, the rotary welding mechanism also includes a rotating ring rotatably connected to the top of the support seat, the inner walls of the two rotating rings are rotatably connected to a fixed disk, the two fixed disks and the two movable columns slide through respectively, the rotating ring and the connecting ring slide through the outer wall of the guide rod, the outer walls of the two rotating rings are fixedly connected to a first gear ring, the outer diameters of the two first gear rings are meshed with a first gear, the two first gears are fixedly connected to the drive shaft, the two first gears are respectively arranged inside the two support seats, one end of the support seat on one side is fixedly connected to a motor, and the motor driving end is fixedly connected to the drive shaft.

[0015] Preferably, the tops of the two fixed plates close to one end are fixedly connected to a cross bar, and the inner sides of the bottom ends of the two cross bars are fixedly connected to an arc welding gun.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The clamping and fixing mechanism can be used to fix the tapered tube on the circular seat. Since the axis of the circular seat and the axis of the square valve body are on the same line, the tapered tube can be accurately docked when it moves, avoiding the need to adjust the position back and forth, simplifying the operation, and thus ensuring the subsequent welding efficiency.

[0018] 2. The linkage fixing mechanism can push the square valve body to move on the positioning seat when the tapered tube is moved, so that the square valve body is located in the center of the positioning seat. At the same time, the telescopic column and the pressure block are moved downward by the steel wire rope to complete the top fixation of the square valve body, avoiding the square valve body from shifting during welding, and ensuring the accuracy of the welding position and the welding quality.

[0019] 3. The rotating welding mechanism can ensure that the arc welding gun is fixed during welding, so that the distance between the arc welding gun and the weld position is always the same, ensuring the same welding effect at every location, avoiding arc blow, and ensuring the welding quality. The same stable arc length can reduce the generation of metal spatter and welding smoke, improve the working environment, reduce the workload of post-weld cleaning, and realize automatic arc welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a welding turntable for instrument pipe fittings and valves according to the present invention;

[0021] Figure 2 The present invention is a kind of instrument pipe valve welding turntable Figure 1 A magnified view of the structure at center A;

[0022] Figure 3This is a side view of another angle of view of a welding turntable for instrument pipe fittings and valves according to the present invention;

[0023] Figure 4 This is a partial structural diagram of a welding turntable for instrument pipe fittings and valves according to the present invention;

[0024] Figure 5 This is a partial structural diagram of a welding turntable for instrument pipe fittings and valves according to the present invention;

[0025] Figure 6 This is a partial cross-sectional view of a positioning seat of a welding turntable for an instrument pipe fitting valve according to the present invention;

[0026] Figure 7 This is a further cross-sectional view of a positioning seat of a welding turntable for an instrument pipe fitting valve according to the present invention;

[0027] Figure 8 This is a partial structural diagram of an instrument pipe valve welding turntable according to the present invention.

[0028] In the figure: 1. base; 2. fixed plate; 3. movable column; 4. fixed ring; 5. connecting rod; 6. rotating ring; 7. first gear ring; 8. movable vertical plate; 9. support ring; 10. second gear ring; 11. positioning seat; 12. drive shaft; 13. second gear; 14. support plate; 15. support seat; 16. motor; 17. electric push rod; 18. circular seat; 19. vacuum pump; 20. cross bar; 21. arc welding gun; 22. square valve body; 23. tapered tube; 24. annular connecting tube; 25. guide rod; 26. first gear; 27. tapered groove; 28. adsorption hole; 29. ​​pressure block; 30. telescopic plate; 31. wire rope; 32. spring; 33. telescopic groove; 34. first pulley group; 35. square hole; 36. second pulley group; 37. connecting ring. DETAILED DESCRIPTION

[0029] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0030] like Figures 1-8The shown instrument pipe valve welding turntable includes a base 1, on which are provided a clamping and fixing mechanism, a linkage fixing mechanism and a rotary welding mechanism; the linkage fixing mechanism includes a positioning seat 11, a square groove is provided at the top of the positioning seat 11 for placing the square valve body 22, and telescopic grooves 33 are provided on both sides of the corresponding groove at the top of the positioning seat 11, the two telescopic grooves 33 are arranged obliquely symmetrically, and the inner walls of the two telescopic grooves 33 are slidably connected with telescopic plates 30, and the tops of the two telescopic plates 30 are fixedly connected with pressure blocks 29 that contact the top of the square valve body 22, and the pressure blocks 29 are used to clamp and fix the square valve body 22; the clamping and fixing mechanism includes a circular seat 18, and there are two circular seats 18. The two circular seats 18 are each provided with a tapered groove 27 at one end close to each other, and the two tapered grooves 27 are used to place the tapered tube 23, and the circular seat 18 moves in a direction close to the square valve body 22, and makes the tapered tube 23 in close contact with both ends of the square valve body 22, while completing the clamping and fixing of the tapered tube 23 and the square valve body 22.

[0031] like Figure 1 、 Figure 3 As shown, the clamping and fixing mechanism also includes a movable vertical plate 8 slidably connected to both sides of the top of the base 1. The two movable vertical plates 8 are fixedly connected to the movable column 3 at one end close to each other. The two movable columns 3 are rotatably connected to the two circular seats 18. It also includes a support seat 15 fixedly connected to the inner side of the corresponding movable vertical plate 8 at the top of the base 1. The two support seats 15 are fixedly connected to the electric push rod 17 at one end away from each other. The telescopic ends of the two electric push rods 17 are fixedly connected to the two movable vertical plates 8. The electric push rod 17 is fixedly limited by the support seat 15.

[0032] like Figure 2 、 Figure 5 As shown, the clamping and fixing mechanism also includes suction holes 28 penetrated on the four sides of the inner wall of the tapered groove 27. The outer wall of the circular seat 18 is fixedly connected to an annular connecting pipe 24 via a pipe. Two sets of annular connecting pipes 24 are connected to the suction holes 28 respectively. The top of each circular seat 18 is fixedly connected to an air pump 19. The two air pumps 19 and the two annular connecting pipes 24 are connected by pipes. The air pump 19 and the annular connecting pipes 24 generate negative pressure in the suction holes 28, thereby fixing the tapered tube 23 and facilitating subsequent docking operations.

[0033] like Figure 1 、 Figure 4 As shown, the linkage fixing mechanism also includes a fixing ring 4 rotatably connected to the outer wall of the movable column 3. Connecting rods 5 are fixedly connected to both sides of the outer walls of the two fixing rings 4. The two sets of connecting rods 5 are fixedly connected to the ends near each other at one end. The two sets of guide rods 25 are fixedly connected to the limit disk at the ends near each other. The guide rods 25 move the wire rope 31, keeping the wire rope 31 in a tensioned state, thereby fixing the top end of the square valve body 22.

[0034] like Figure 6 、 Figure 7 As shown, the linkage fixing mechanism also includes a square hole 35 provided in the telescopic slot 33 at one end away from each other. A first pulley set 34 and a second pulley set 36 are fixedly installed on both sides of the inner wall of the two square holes 35. Each set of the first pulley set 34 and the second pulley set 36 are arranged vertically. A wire rope 31 is fixedly connected to the bottom end of each telescopic plate 30. A spring 32 is symmetrically fixedly connected between each set of telescopic plates 30 and the telescopic slot 33. The wire rope 31 passes between the rollers on the first pulley set 34 and the second pulley set 36. The two wire ropes 31 are fixedly connected to the two lower guide rods 25. The first pulley set 34 and the second pulley set 36 can protect the wire rope 31, reduce friction on the wire rope 31, and thus extend the service life of the wire rope 31. When welding is completed, the spring 32 can automatically reset the telescopic plate 30. The telescopic plate 30 and the telescopic slot 33 are limited by a slide groove and a slider. When the telescopic plate 30 is reset, the wire rope 31 is in a loose state.

[0035] like Figure 1 、 Figure 2 、 Figure 4 、 Figure 8 As shown, the rotary welding mechanism includes a support plate 14 fixedly connected to the inner side of the corresponding support seat 15 at the top of the base 1, and the tops of the two groups of support plates 14 are fixedly connected to support rings 9. The two support rings 9 are rotatably connected to the second gear ring 10 at one end close to each other, and the inner walls of the two second gear rings 10 are fixedly connected to connecting rings 37. The two connecting rings 37 are fixedly connected to the positioning seat 11. The outer diameters of the two second gear rings 10 are meshed with the second gear 13. The two second gears 13 are fixedly connected to the drive shaft 12, and the drive shaft 12 is rotatably connected to the support seat 15. The rotary welding mechanism also includes a rotating ring 6 rotatably connected to the top of the support seat 15, and the inner walls of the two rotating rings 6 are rotatably connected to the fixed disk 2. The two fixed disks 2 and the two movable disks 2 The moving columns 3 slide through respectively, and the rotating ring 6 and the connecting ring 37 both slide through the outer wall of the guide rod 25. The outer walls of the two rotating rings 6 are fixedly connected with the first gear ring 7, and the outer diameters of the two first gear rings 7 are meshed with the first gear 26. The two first gears 26 are fixedly connected to the drive shaft 12. The two first gears 26 are respectively arranged inside the two support seats 15, and one end of the support seat 15 on one side is fixedly connected to the motor 16. The driving end of the motor 16 is fixedly connected to the drive shaft 12. The two fixed disks 2 are fixedly connected to the top of one end close to each other with a cross bar 20, and the inner side of the bottom end of the two cross bars 20 is fixedly connected to an arc welding gun 21, and the gap between the square valve body 22 and the tapered tube 23 is welded by the arc welding gun 21.

[0036] Working principle: First, the square valve body 22 is placed in the groove on the positioning seat 11, and the tapered tube 23 is placed in the tapered groove 27 on the circular seat 18. At this time, the vacuum pump 19 is started to generate a negative pressure effect in the adsorption hole 28 through the annular connecting pipe 24, so that the tapered tube 23 can be adsorbed and fixed. Then, the electric push rods 17 on both sides are controlled by the synchronous controller to move the movable vertical plate 8 in the approaching direction, so that the movable columns 3 on both sides can be moved synchronously. Since the movable column 3 is fixedly connected to the circular seat 18, it can move with the circular seat 18 and push the tapered tube 23 in the direction close to the square valve body 22. When the tapered tube 23 on one side contacts the square valve body 22, it will push the square valve body 22 to move to the other side until the tapered tubes 23 on both sides contact the two ends of the square valve body 22. Since the axis center line of the circular seat 18 and the axis center line of the square valve body 22 are in the same straight line, precise docking can be achieved, avoiding the situation of adjusting the position back and forth, simplifying the operation, and ensuring the subsequent welding efficiency.

[0037] When the movable column 3 moves, it will move synchronously with the guide rod 25. Since the lower guide rod 25 is fixedly connected to the wire rope 31, the telescopic plate 30 and the pressure block 29 can be pulled by the wire rope 31, and the pressure block 29 can be clamped and fixed from the top of the square valve body 22 to avoid deviation during rotation welding, prevent position deviation and ensure welding quality.

[0038] Then the motor 16 is started to rotate the drive shaft 12, and the drive shaft 12 rotates the second gear 13 and the first gear 26, thereby rotating the second gear ring 10 and the first gear ring 7, and the second gear ring 10 and the first gear ring 7 respectively rotate with the connecting ring 37 and the rotating ring 6. Since the connecting ring 37 is fixedly connected to the positioning seat 11, it can rotate synchronously with the positioning seat 11, so it can rotate with the square valve body 22 and the tapered tube 23. At the same time, the arc welding gun 21 is started to weld the gap between the square valve body 22 and the tapered tube 23, so that the distance between the arc welding gun 21 and the weld position is always the same, ensuring the same welding effect at each location, avoiding arc blow, and ensuring the quality of welding forming. The same stable arc length can reduce the generation of metal spatter and welding smoke, improve the working environment, and reduce the workload of post-weld cleaning, and can realize automatic arc welding.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An instrument pipe fitting valve welding turntable, comprising a base (1), characterized in that: The base (1) is provided with a clamping and fixing mechanism, a linkage fixing mechanism and a rotation welding mechanism; The linkage fixing mechanism includes a positioning seat (11), a square groove is provided at the top of the positioning seat (11) for placing the square valve body (22), telescopic grooves (33) are provided on both sides of the corresponding groove at the top of the positioning seat (11), the two telescopic grooves (33) are arranged obliquely symmetrically, the inner walls of the two telescopic grooves (33) are slidably connected with telescopic plates (30), the tops of the two telescopic plates (30) are fixedly connected with pressure blocks (29) in contact with the top of the square valve body (22), and the pressure blocks (29) are used to clamp and fix the square valve body (22); The clamping and fixing mechanism includes a circular seat (18), and the number of the circular seats (18) is set to two. The two circular seats (18) are close to each other and are each provided with a tapered groove (27). The two tapered grooves (27) are used to place the tapered tube (23). The circular seat (18) moves in a direction close to the square valve body (22) and makes the tapered tube (23) and the square valve body (22) closely contact at both ends, thereby completing the clamping and fixing of the tapered tube (23) and the square valve body (22).

2. The instrument pipe fitting valve welding turntable according to claim 1, characterized in that: The clamping and fixing mechanism also includes movable vertical plates (8) slidably connected to both sides of the top of the base (1), the two movable vertical plates (8) are fixedly connected to a movable column (3) at one end close to each other, the two movable columns (3) and the two circular seats (18) are respectively rotatably connected, and also includes a support seat (15) fixedly connected to the inner side of the movable vertical plates (8) corresponding to the top of the base (1), the two support seats (15) are fixedly connected to an electric push rod (17) at one end away from each other, and the telescopic ends of the two electric push rods (17) are respectively fixedly connected to the two movable vertical plates (8).

3. The instrument pipe fitting valve welding turntable according to claim 2, characterized in that: The clamping and fixing mechanism also includes adsorption holes (28) penetrated on four sides of the inner wall of the conical groove (27); the outer wall of the circular seat (18) is fixedly connected to an annular connecting pipe (24) through a pipeline; two groups of the annular connecting pipes (24) and the adsorption holes (28) are respectively communicated; the top ends of the two circular seats (18) are fixedly connected to an air pump (19); the two air pumps (19) and the two annular connecting pipes (24) are respectively connected through pipelines.

4. The instrument pipe fitting valve welding turntable according to claim 2, characterized in that: The linkage fixing mechanism further comprises a fixing ring (4) rotatably connected to the outer wall of the movable column (3), connecting rods (5) are fixedly connected to both sides of the outer walls of the two fixing rings (4), and the two groups of connecting rods (5) are fixedly connected to guide rods (25) at one end close to each other, and the two groups of guide rods (25) are fixedly connected to a limit plate at one end close to each other.

5. The instrument pipe fitting valve welding turntable according to claim 4, characterized in that: The linkage fixing mechanism further comprises a square hole (35) which is provided in the telescopic slot (33) and is away from one end of the telescopic slot (33). A first pulley group (34) and a second pulley group (36) are fixedly mounted on both sides of the inner walls of the two square holes (35), respectively. Each group of the first pulley group (34) and the second pulley group (36) are arranged vertically.

6. The instrument pipe fitting valve welding turntable according to claim 5, characterized in that: The bottom ends of the two telescopic plates (30) are fixedly connected with steel wire ropes (31), and each group of telescopic plates (30) and telescopic slots (33) are symmetrically fixedly connected with springs (32). The steel wire ropes (31) pass between the rollers on the first pulley group (34) and the second pulley group (36), and the two steel wire ropes (31) are fixedly connected to the two guide rods (25) on the lower side.

7. The instrument pipe fitting valve welding turntable according to claim 4, characterized in that: The rotary welding mechanism comprises a support plate (14) fixedly connected to the inner side of the support seat (15) corresponding to the top of the base (1), the tops of the two groups of support plates (14) are fixedly connected to support rings (9), the two support rings (9) are rotatably connected to the second gear ring (10) at one end close to each other, the inner walls of the two second gear rings (10) are fixedly connected to connecting rings (37), the two connecting rings (37) and the positioning seat (11) are fixedly connected, the outer diameters of the two second gear rings (10) are meshed with second gears (13), the two second gears (13) are fixedly connected to drive shafts (12), and the drive shaft (12) and the support seat (15) are rotatably connected.

8. The instrument pipe fitting valve welding turntable according to claim 7, characterized in that: The rotary welding mechanism also includes a rotating ring (6) rotatably connected to the top of the support seat (15), the inner walls of the two rotating rings (6) are rotatably connected to a fixed disk (2), the two fixed disks (2) and the two movable columns (3) slide through respectively, the rotating ring (6) and the connecting ring (37) slide through the outer wall of the guide rod (25), the outer walls of the two rotating rings (6) are fixedly connected to a first gear ring (7), the outer diameters of the two first gear rings (7) are meshed with a first gear (26), the two first gears (26) are fixedly connected to the drive shaft (12), the two first gears (26) are respectively arranged inside the two support seats (15), one end of the support seat (15) on one side is fixedly connected to a motor (16), and the driving end of the motor (16) is fixedly connected to the drive shaft (12).

9. The instrument pipe fitting valve welding turntable according to claim 8, characterized in that: The tops of the two fixed plates (2) close to one end are fixedly connected to a cross bar (20), and the inner sides of the bottom ends of the two cross bars (20) are fixedly connected to an arc welding gun (21).

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