A welding machine for valve assembly

Abstract

This invention relates to the technical field of welding equipment, and in particular to a welding machine for valve assembly, comprising a main ring, a base, a slide, clamping plates, and welding rods. The main ring has a horizontal axis and rotates around its own axis. The base is fixed on the main ring and rotates synchronously with it. The slide is slidably mounted on the base in a direction perpendicular to the axis of the main ring. Both clamping plates are mounted on the slide. By inserting the welding rod into the gap between the flange and the valve body for welding, the welding strength and quality of the mating surfaces can be effectively improved, enabling comprehensive and effective welding of the valve and improving the valve processing quality. The main ring drives the welding rod to perform circular motion, and the slide moves on the base and feeds the welding rod, realizing an automatic welding process and improving production efficiency.

Description

Technical Field

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

[0002] In modern industrial production, valves, as key components for controlling fluid transmission, play a vital role in many industries such as petrochemicals, energy, and manufacturing. With the continuous improvement of industrial automation levels, the requirements for valve manufacturing are also getting higher and higher, especially in terms of precision, durability, and cost control.

[0003] The welding work of the valve is mainly for the valve body and flange on it. During welding, the valve body and the flange are butt-jointed together, and then the workers use welding guns, welding rods and other equipment to weld the valve body and the flange. The distribution of welding points in this welding method is generally located on the outside of the butt-jointed position, that is, only the outer surface of the valve can be welded, and the butt-jointed surface cannot be welded, resulting in poor welding strength and low valve quality. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a valve assembly welding machine, the specific technical solution adopted by the present invention is:

[0005] A valve assembly welding machine comprises a main ring, a base, a slide, a clamping plate and a welding rod, wherein the main ring axis is horizontal and the main ring rotates around its own axis, the base is fixed on the main ring and rotates synchronously with the main ring, the slide is slidably mounted on the base in a direction perpendicular to the main ring axis, two clamping plates are arranged on the slide, and the two clamping plates are used to clamp and fix the welding rod, and the welding rod is used to weld the flange and the valve body;

[0006] The welding end of the welding rod extends into the gap between the flange and the valve body, and the welding rod is tangent to the circle where the valve body is located.

[0007] Furthermore, a metal sheet is sandwiched between the flange and the valve body.

[0008] Furthermore, the clamping plate is composed of a vertical plate and a first slider, the vertical plate is provided with a groove for clamping the welding rod, the vertical plate and the first slider are fixedly connected by bolts and lock nuts, and the first slider is slidably installed on the slide along the axis of the main ring.

[0009] Furthermore, each of the first sliders is threaded with a first threaded rod, the two first threaded rods on the two first sliders are butt-jointed with each other, and the thread directions of the two first threaded rods are opposite, the first threaded rod is rotatably mounted on the slide, and the first threaded rod is connected to the slide via a torsion spring.

[0010] Furthermore, two clamping columns are rotatably provided on the base, and the two clamping columns are respectively provided on both sides of the welding rod. An annular groove is provided on the clamping column, and the clamping column clamps the welding rod through the annular groove.

[0011] Furthermore, a notch is provided on the base, a second slider is slidably arranged in the notch, the sliding direction of the second slider is perpendicular to the axis of the main ring, the second slider is connected to the base via a leaf spring, two insertion rods are slidably inserted on the second slider, the two insertion rods are relatively inclined, and the clamping column is rotatably mounted on the insertion rods;

[0012] A cylinder is rotatably arranged on the base, a guide rail is arranged on the movable end of the cylinder, the bottom of the insertion rod is slidably mounted on the guide rail, and the insertion rod is connected to the second slider via a spring sheet;

[0013] When the cylinder is extended, the guide rail pushes the two insertion rods to move upward and separate the two clamping columns from each other.

[0014] Furthermore, a micro motor is fixed on the base, a second threaded rod is arranged at the output end of the micro motor, a threaded sleeve is screwed on the second threaded rod, and the threaded sleeve is fixedly connected to the slide.

[0015] Furthermore, a back plate is arranged on the main ring, the main ring rotates on the back plate, a main motor is arranged on the back plate, a transmission wheel is arranged at the output end of the main motor, and the transmission wheel is transmission-connected to the main ring.

[0016] The advantages of the present invention are:

[0017] By extending the welding rod into the gap between the flange and the valve body for welding, the welding strength and quality of the butt joint surface can be effectively improved, the comprehensive and effective welding of the valve can be achieved, and the valve processing quality can be improved; the main ring drives the welding rod to move in a circular motion and the slide moves on the base and feeds the welding rod, thus realizing an automatic welding process and improving production efficiency; in summary, the design of this new welding machine overcomes the limitations of traditional welding methods, improves welding quality and production efficiency, and reduces costs at the same time, and is an effective technological innovation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2yes Figure 1 Schematic diagram of the mid-back plate and the structure thereon;

[0021] Figure 3 yes Figure 1 Enlarged structural diagram of the middle flange and valve body;

[0022] Figure 4 yes Figure 2 Schematic diagram of the mid-base enlarged structure;

[0023] Figure 5 yes Figure 4 Right view structural diagram;

[0024] Figure 6 yes Figure 4 Schematic diagram of the enlarged structure of the middle slide;

[0025] Figure numerals: 1. main ring; 2. base; 3. slide; 4. clamp; 5. welding rod; 6. flange; 7. valve body; 8. metal sheet; 9. vertical plate; 10. first slider; 11. first threaded rod; 12. torsion spring; 13. clamp column; 14. second slider; 15. leaf spring; 16. plug rod; 17. cylinder; 18. guide rail; 19. spring; 20. micromotor; 21. second threaded rod; 22. threaded sleeve; 23. back plate; 24. main motor; 25. transmission wheel. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0029] like Figures 1 to 6 As shown, a valve assembly welding machine of the present invention comprises a main ring 1, a base 2, a slide 3, a clamping plate 4 and a welding rod 5, wherein the axis of the main ring 1 is horizontal, and the main ring 1 rotates around its own axis, the base 2 is fixed on the main ring 1 and rotates synchronously with the main ring 1, the slide 3 is slidably mounted on the base 2 in a direction perpendicular to the axis of the main ring 1, two clamping plates 4 are both arranged on the slide 3, and the two clamping plates 4 are used to clamp and fix the welding rod 5, and the welding rod 5 is used to weld the flange 6 and the valve body 7;

[0030] The welding end of the welding rod 5 extends into the gap between the flange 6 and the valve body 7 , and the welding rod 5 is tangent to the circle where the valve body 7 is located.

[0031] In detail, the flange 6 and the valve body 7 can be welded to form a valve, and the welding rod 5 is used to weld the flange 6 and the valve body 7. Therefore, during normal use, one end of the welding rod 5 needs to be energized, and the flange 6 and the valve body 7 are energized. The other end of the welding rod 5 is used to contact the butt surface between the flange 6 and the valve body 7 and perform molten welding. As the welding work proceeds and the welding rod 5 is consumed, the welding end of the welding rod 5 is always located at the tangent point of the circle where the welding rod 5 and the flange 6 are located. The main ring 1 can provide support for the base 2, and can drive the base 2 and the structure thereon to perform circular motion with the axis of the main ring 1 as the rotation axis. The base 2 provides support for the slide 3, the clamp 4 and the welding rod 5 thereon. Since the welding rod 5 will be continuously consumed during use, it is necessary to slide the slide 3 on the base 2 toward the flange 6, so that the welding rod 5 is continuously advanced. The two clamps 4 are used to clamp and fix the welding rod 5, and the main ring 1 and the valve body 7 are coaxial.

[0032] During welding, the flange 6 and the valve body 7 are both fixed in position and close to each other in the horizontal direction. The gap between the flange 6 and the valve body 7 provides space for the insertion of the welding rod 5, so that the welding rod 5 can directly weld the butt joints of the flange 6 and the valve body 7, thereby realizing the welding work from the inside of the butt joint position. The main ring 1 can drive the welding rod 5 thereon to perform circular motion, so that when the welding rod 5 welds the gap between the flange 6 and the valve body 7, the welding rod 5 can move around the axis of the flange 6 and realize the comprehensive welding of the weld. When the welding rod 5 is welding, the slide 3 slowly moves toward the flange 6 and continuously feeds the welding rod 5, thereby realizing automatic welding of the valve.

[0033] In actual use, since the welding rod 5 needs to be inserted into the gap between the flange 6 and the valve body 7, the width of the gap needs to be slightly larger than the diameter of the welding rod 5. This will result in the welding rod 5 being unable to contact the mating surfaces of the flange 6 and the valve body 7 at the beginning. Therefore, the welding rod 5 needs to be tilted toward the flange 6 or the valve body 7 to connect the circuit and melt the welding end of the welding rod 5. When the distance between the inner wall of the gap and the welding rod 5 is small enough, the welding rod 5 can also be melted by the generated arc. During normal welding, since the welding rod 5 melts, its molten metal liquid will fill the space between the flange 6 and the valve body 7 and realize the welding work of the flange 6 and the valve body 7. At this time, the welding rod 5 can be restored to its natural state.

[0034] When the wall thickness of the butt joint between the flange 6 and the valve body 7 is small, the main ring 1 can rotate one circle to fill the gap between the flange 6 and the valve body 7 with the melted welding rod 5. When the wall thickness is large, the main ring 1 can be rotated multiple times.

[0035] By extending the welding rod 5 into the gap between the flange 6 and the valve body 7 for welding, the welding strength and quality of the butt joint surface can be effectively improved, the comprehensive and effective welding work of the valve can be achieved, and the valve processing quality can be improved; the main ring 1 drives the welding rod 5 to perform circular motion and the slide 3 moves on the base 2 and feeds the welding rod 5, thereby realizing an automatic welding process and improving production efficiency; in summary, the design of this new welding machine overcomes the limitations of traditional welding methods, improves welding quality and production efficiency, and reduces costs at the same time, and is an effective technological innovation.

[0036] Furthermore, a metal sheet 8 is sandwiched between the flange 6 and the valve body 7 .

[0037] In detail, when the flange 6 and the valve body 7 are fixed in position, a metal sheet 8 is placed in the gap therebetween. At this time, the flange 6 and the valve body 7 clamp the metal sheet 8. During the initial welding, the welding end of the welding rod 5 can directly contact the metal sheet 8, thereby achieving circuit conduction without the need to tilt the welding rod 5. This can greatly simplify the operation method and improve safety, avoiding burns or electric injuries when workers bend the welding rod 5. With the help of the metal sheet 8, the welding end of the welding rod 5 can be conductive and melted.

[0038] Furthermore, the clamping plate 4 is composed of a vertical plate 9 and a first slider 10. A groove for clamping the welding rod 5 is provided on the vertical plate 9. The vertical plate 9 and the first slider 10 are fixedly connected by bolts and lock nuts. The first slider 10 is slidably installed on the slide 3 along the axial direction of the main ring 1.

[0039] In detail, when the two first sliders 10 approach each other, the two vertical plates 9 simultaneously approach each other and use the grooves on the vertical plates 9 to clamp and fix the welding rod 5. Since the vertical plates 9 and the first sliders 10 are connected by common structures such as bolts and lock nuts, the distance between the vertical plates 9 and the first sliders 10 can be adjusted, thereby adjusting the distance between the welding end of the welding rod 5 and the axis of the main ring 1, which is convenient for welding valves of different diameters.

[0040] Furthermore, each of the first sliders 10 is screwed with a first threaded rod 11, the two first threaded rods 11 on the two first sliders 10 are butt-jointed with each other, and the thread directions of the two first threaded rods 11 are opposite, the first threaded rod 11 is rotatably mounted on the slide 3, and the first threaded rod 11 is connected to the slide 3 via a torsion spring 12.

[0041] In detail, by setting two first threaded rods 11, when one first slider 10 moves, the other first slider 10 will move synchronously. Since the thread directions of the two first threaded rods 11 are opposite, the two vertical plates 9 will move synchronously in opposite directions. The torsion spring 12 provides an elastic thrust for the vertical plates 9 through the first threaded rods 11 and the first slider 10, so that the two vertical plates 9 are close to each other and squeeze and fix the welding rod 5.

[0042] The above structure can locate the center point between the two vertical plates 9, thereby locating the position of the welding rod 5.

[0043] Furthermore, two clamping columns 13 are rotatably provided on the base 2 , and the two clamping columns 13 are respectively provided on both sides of the welding rod 5 . An annular groove is formed on the clamping columns 13 , and the clamping columns 13 clamp the welding rod 5 through the annular groove.

[0044] In detail, when the slide 3 moves on the base 2, the welding rod 5 moves, and the welding rod 5 will drive the two clamping columns 13 to move synchronously. The two clamping columns 13 play an auxiliary supporting role on the welding rod 5, thereby ensuring that the welding rod 5 is straight and avoiding its bending and shaking.

[0045] Furthermore, a notch is provided on the base 2, and a second slider 14 is slidably provided in the notch. The sliding direction of the second slider 14 is perpendicular to the axis of the main ring 1. The second slider 14 is connected to the base 2 via a leaf spring 15. Two insertion rods 16 are slidably inserted on the second slider 14. The two insertion rods 16 are relatively inclined, and the clamping column 13 is rotatably mounted on the insertion rods 16.

[0046] A cylinder 17 is rotatably provided on the base 2, a guide rail 18 is provided on the movable end of the cylinder 17, the bottom of the insertion rod 16 is slidably installed on the guide rail 18, and the insertion rod 16 is connected to the second slider 14 via a spring sheet 19;

[0047] When the cylinder 17 is extended, the guide rail 18 pushes the two insertion rods 16 to move upward and separate the two clamping columns 13 from each other.

[0048] In detail, the elasticity of the leaf spring 15 is greater than the elasticity of the spring piece 19. When the slide 3 initially moves on the base 2, the positions of the two clamping columns 13 remain unchanged. When the slide 3 approaches the clamping columns 13, in order to avoid their mutual collision, the cylinder 17 extends, and the cylinder 17 pushes the two plug rods 16 upward through the guide rail 18. Since the two plug rods 16 are relatively inclined, the two clamping columns 13 on the two plug rods 16 separate from each other during the upward movement, so that the clamping columns 13 stop supporting the welding rod 5. At this time, the bottom of the plug rod 16 slides on the guide rail 18, and the spring piece 19 is elastically deformed. When the guide rail 18 contacts the bottom of the second slider 14, the plug rod 16 stops moving. Since the cylinder 17 is inclined, the cylinder 17 overcomes the elastic force of the leaf spring 15 and pushes the second slider 14 to slide in the notch, so that the clamping column 13 avoids the slide 3, which facilitates the slide 3 to normally convey and feed the welding rod 5.

[0049] Furthermore, a micro motor 20 is fixed on the base 2 , a second threaded rod 21 is provided at the output end of the micro motor 20 , a threaded sleeve 22 is threadedly mounted on the second threaded rod 21 , and the threaded sleeve 22 is fixedly connected to the slide 3 .

[0050] In detail, the micro motor 20 can push the threaded sleeve 22 to move through the second threaded rod 21, so that the threaded sleeve 22 can drive the slide 3 to move, thereby providing power for the slide 3 and the welding rod 5.

[0051] Furthermore, a back plate 23 is provided on the main ring 1 , and the main ring 1 rotates on the back plate 23 . A main motor 24 is provided on the back plate 23 , and a transmission wheel 25 is provided at the output end of the main motor 24 , and the transmission wheel 25 is transmission-connected to the main ring 1 .

[0052] In detail, the back plate 23 can provide support for the main ring 1 , and the main motor 24 and the transmission wheel 25 can provide power for the rotation of the main ring 1 .

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A valve assembly welding machine, characterized in that: It comprises a main ring (1), a base (2), a slide (3), a clamping plate (4) and a welding rod (5), wherein the axis of the main ring (1) is horizontal and the main ring (1) rotates around its own axis, the base (2) is fixed on the main ring (1) and rotates synchronously with the main ring (1), the slide (3) is slidably mounted on the base (2) in a direction perpendicular to the axis of the main ring (1), two clamping plates (4) are both arranged on the slide (3), and the two clamping plates (4) are used to clamp and fix the welding rod (5), and the welding rod (5) is used to perform welding processing on the flange (6) and the valve body (7); The welding end of the welding rod (5) extends into the gap between the flange (6) and the valve body (7), and the welding rod (5) is tangent to the circle where the valve body (7) is located; A metal sheet (8) is sandwiched between the flange (6) and the valve body (7); The clamping plate (4) is composed of a vertical plate (9) and a first sliding block (10); a groove for clamping the welding rod (5) is provided on the vertical plate (9); the vertical plate (9) and the first sliding block (10) are fixedly connected by bolts and lock nuts; the first sliding block (10) is slidably mounted on the slide table (3) along the axis direction of the main ring (1); A first threaded rod (11) is threadedly inserted into each of the first sliding blocks (10); the two first threaded rods (11) on the two first sliding blocks (10) are butted against each other, and the threads of the two first threaded rods (11) are in opposite directions; the first threaded rod (11) is rotatably mounted on the slide table (3), and the first threaded rod (11) and the slide table (3) are connected via a torsion spring (12); Two clamping columns (13) are rotatably provided on the base (2), the two clamping columns (13) are respectively provided on two sides of the welding rod (5), an annular groove is provided on the clamping columns (13), and the clamping columns (13) clamp the welding rod (5) through the annular groove; The base (2) is provided with a notch, a second slider (14) is slidably arranged in the notch, the sliding direction of the second slider (14) is perpendicular to the axis of the main ring (1), the second slider (14) is connected to the base (2) via a leaf spring (15), two insertion rods (16) are slidably inserted in the second slider (14), the two insertion rods (16) are inclined relative to each other, and the clamping column (13) is rotatably mounted on the insertion rod (16); A cylinder (17) is rotatably provided on the base (2), a guide rail (18) is provided on the movable end of the cylinder (17), the bottom of the insertion rod (16) is slidably mounted on the guide rail (18), and the insertion rod (16) and the second sliding block (14) are connected via a spring sheet (19); When the cylinder (17) is extended, the guide rail (18) pushes the two insertion rods (16) to move upward and separate the two clamping columns (13) from each other.

2. A valve assembly welding machine according to claim 1, characterized in that: A micro motor (20) is fixed on the base (2); a second threaded rod (21) is provided at the output end of the micro motor (20); a threaded sleeve (22) is threadedly mounted on the second threaded rod (21); and the threaded sleeve (22) is fixedly connected to the slide table (3).

3. A valve assembly welding machine according to claim 2, characterized in that: The main ring (1) is provided with a back plate (23), the main ring (1) rotates on the back plate (23), a main motor (24) is provided on the back plate (23), a transmission wheel (25) is provided at the output end of the main motor (24), and the transmission wheel (25) is in transmission connection with the main ring (1).

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