Valve welding process and welding equipment thereof

Abstract

The invention relates to the technical field of equipment welding, and discloses a valve welding process and welding equipment thereof.The welding equipment comprises an adjusting shaft sleeve, a sliding hole is formed in one end of the adjusting shaft sleeve, the sliding hole is in sliding fit with an arc-shaped sliding rod, a second fastening bolt is arranged on one side of the sliding hole, and a swing arm is arranged at the top of the adjusting shaft sleeve through shaft connection; the front end of the swing arm is sleeved with a swing gear through a bearing, and the swing gear is meshed with the outer gear ring. The position of the adjusting shaft sleeve on the outer surface of the arc-shaped sliding rod is adjusted, when the adjusting shaft sleeve moves to the position close to the energy storage spring, the swing amplitude of the arc-shaped sliding rod driven by the transmission device is improved, the width of welding lines formed by welding is larger, and when the adjusting shaft sleeve moves to the position close to the connecting shaft base, the swing amplitude of the arc-shaped sliding rod is reduced. And the width of a welding line formed by welding is smaller, so that the device can determine the swing amplitude of the arc-shaped sliding rod in the welding process according to the width of a welding seam of the valve body, and the practicability of the device is improved.

Description

Technical Field

[0001] This application relates to the field of equipment welding technology, and in particular to a welding process and welding equipment for a valve. Background Technology

[0002] In the valve manufacturing process, welding of the valve body is required, using specialized welding equipment, such as the valve welding equipment disclosed in application publication number CN116900579A. This equipment can achieve the desired welding effect on the valve body, and uses a motor to drive gears one and two to oscillate the welding torch, thereby forming a fish-scale weld pattern at the weld seam of the valve body, improving the structural strength of the valve body after welding. Although the aforementioned valve body welding equipment has the above advantages, it still has certain limitations in actual use. For example, the oscillation amplitude of the welding torch cannot be too large, otherwise the tip of the welding rod may not be aligned with the welding head, resulting in an interruption of the weld pattern. Furthermore, the oscillation frequency of the welding torch needs to be set separately, which is inconvenient to use. In addition, the position of the welding torch is fixed. If the diameter of the valve body is large, other equipment must be used for welding, which affects its applicability and increases production costs. In view of this, this application proposes a valve welding equipment and its welding process to solve the above-mentioned problems. Summary of the Invention

[0003] This application proposes a welding process and welding equipment for valves, which has the advantage that the electrode supply equipment and the welding equipment can swing synchronously, thereby solving the problem that the front end of the electrode cannot be aligned with the front end of the welding gun when the swing amplitude is too large.

[0004] To achieve the above objectives, this application adopts the following technical solution: a valve welding device, including a base plate, a fixed plate fixedly installed at the top near the middle of the base plate, a fixed block fixedly installed on the front of the fixed plate, a sliding groove opened at the front end of the fixed block, a ring body slidably connected inside the sliding groove, an external toothed ring fixedly installed at the front end of the ring body, the external toothed ring being rotated by a power device, cylinders being provided at the top and bottom of the inner ring of the external toothed ring, the cylinders clamping the valve body of the valve to be welded by extension and retraction, a rocking device fixedly installed at the top near one side of the base plate, an adjusting device sleeved at one end of the rocking device, and a transmission device slidably connected to the outer surface of the rocking device.

[0005] Furthermore, the swing device includes a sleeve, and an arc-shaped slide rod is movably fitted on the top of the sleeve. An energy storage spring is provided on the top of the sleeve at a position outside the arc-shaped slide rod. The energy storage spring stores elastic potential energy and causes the arc-shaped slide rod to generate a rotational torque away from the outer toothed ring. The top end of the energy storage spring is fixedly connected to the arc-shaped slide rod, and a coupling seat is provided at one end of the arc-shaped slide rod.

[0006] Furthermore, a limiting slide rail is provided on the outer surface of the arc-shaped slide rod, the arc-shaped slide rod is set to be arc-shaped, and the arc is the same as the arc of the outer edge of the outer toothed ring, and the transmission device is slidably installed on the outer surface of the arc-shaped slide rod.

[0007] Furthermore, the adjusting device includes a connecting shaft, which is movably sleeved with a connecting shaft seat. A telescopic rod is fixedly installed at one end of the connecting shaft, and a bushing is fixedly installed at one end of the telescopic rod. A first fastening bolt is provided on the outer surface of the bushing. By loosening the first fastening bolt, the adjusting slide rod can be raised and lowered. After adjustment, the first fastening bolt can be tightened to re-fix the adjusting slide rod, and the height of the welding rod supply device and the welding device can be adjusted simultaneously. An adjusting slide rod is slidably connected inside the bushing. A connecting rod is fixedly installed at the bottom of the adjusting slide rod. A welding rod supply device is provided on the front of the connecting rod near one end, and a welding device is provided on the front of the connecting rod near the other end.

[0008] Specifically, the welding wire inside the welding electrode supply device is aligned with the front welding head of the welding device.

[0009] Furthermore, the connection between the welding equipment and the coupling seat adopts a high-damping design.

[0010] Furthermore, the transmission device includes an adjusting bushing, one end of which has a sliding hole that slides in conjunction with an arc-shaped sliding rod. A second fastening bolt is provided on one side of the sliding hole. A swing arm is connected to the top of the adjusting bushing via a shaft, and a swing gear is mounted on the front end of the swing arm via a bearing.

[0011] Furthermore, the oscillating gear meshes with the external gear ring.

[0012] Furthermore, a connecting shaft is provided at the top of the oscillating gear, and the connecting shaft is fixedly connected to the oscillating gear in an eccentric manner.

[0013] Furthermore, the swing gears have different specifications, differing only in diameter, and the ratio of the longest distance L1 to the shortest distance L2 from the connecting shaft axis to the outer edge of the swing gear is the same.

[0014] This application has the following beneficial effects.

[0015] Compared to the prior art, this invention mounts both the welding equipment and the electrode supply equipment on the adjusting device. When the oscillating device swings, it drives both the welding equipment and the electrode supply equipment to swing simultaneously, creating a fish-scale pattern at the weld. It also ensures the welding wire is always aligned with the welding head, preventing the welding wire from failing to contact the welding head properly when the welding equipment swings too much. Furthermore, this device does not require an additional power source; it relies on the rotation of the external gear ring to drive the oscillating device, and the oscillation frequency is directly proportional to the rotational speed of the external gear ring. The oscillation amplitude can be adjusted by changing the position of the adjusting bushing on the outer surface of the arc-shaped slide rod, reducing the difficulty of use. Moreover, by changing the specifications of the oscillating gear, the oscillation frequency of the oscillating device can be adjusted without changing the rotational speed of the external gear ring. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0017] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a structural diagram of the present invention; Figure 2 This is a connection diagram of the swing device and the adjustment device of the present invention; Figure 3 This is a diagram of the swing device structure of the present invention; Figure 4 This is a diagram of the structural adjustment device of the present invention; Figure 5 This is a conventional device diagram of the present invention; Figure 6 This is a diagram of the oscillating gear structure of the present invention; Figure 7 This is a comparison diagram of the swing gears of different specifications in the present invention.

[0018] In the diagram: 1. Base plate; 2. Fixed plate; 3. Fixed block; 4. Slide groove; 5. Ring body; 6. External gear ring; 7. Cylinder; 8. Swinging device; 81. Sleeve; 82. Arc-shaped slide rod; 83. Energy storage spring; 84. Coupling seat; 9. Adjusting device; 91. Connecting shaft; 92. Telescopic rod; 93. Bushing; 94. First fastening bolt; 95. Adjusting slide rod; 96. Connecting rod; 97. Welding electrode supply equipment; 98. Welding equipment; 10. Transmission device; 101. Adjusting bushing; 102. Sliding hole; 103. Second fastening bolt; 104. Swinging arm; 105. Swinging gear; 1051. Connecting shaft. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] A valve welding device, please refer to Figure 1 The system includes a base plate 1, a fixed plate 2 fixedly installed on the top of the base plate 1 near the middle, a fixed block 3 fixedly installed on the front of the fixed plate 2, a sliding groove 4 opened at the front end of the fixed block 3, a ring 5 slidably connected inside the sliding groove 4, an external toothed ring 6 fixedly installed at the front end of the ring 5, the external toothed ring 6 is rotated by a power device, cylinders 7 are provided at the top and bottom of the inner ring of the external toothed ring 6, the cylinders 7 clamp the valve body of the valve to be welded by extension and retraction, a rocking device 8 fixedly installed on the top of the base plate 1 near one side, an adjusting device 9 is sleeved on one end of the rocking device 8, and a transmission device 10 is slidably connected to the outer surface of the rocking device 8.

[0021] Please see Figures 2-3 The swing device 8 includes a sleeve 81, with an arc-shaped slide rod 82 movably fitted on the top of the sleeve 81. An energy storage spring 83 is provided on the top of the sleeve 81 at a position outside the arc-shaped slide rod 82. The energy storage spring 83 stores elastic potential energy and causes the arc-shaped slide rod 82 to generate a rotational torque away from the outer toothed ring 6. The top of the energy storage spring 83 is fixedly connected to the arc-shaped slide rod 82, and a coupling seat 84 is provided at one end of the arc-shaped slide rod 82.

[0022] Please see Figures 1-3 The outer surface of the arc-shaped slide bar 82 is provided with a limit slide rail. The arc-shaped slide bar 82 is set in an arc shape, and the arc is the same as the arc of the outer edge of the outer toothed ring 6. The transmission device 10 is slidably installed on the outer surface of the arc-shaped slide bar 82.

[0023] Please see Figure 4 The adjusting device 9 includes a connecting shaft 91, which is movably sleeved with a connecting shaft seat 84. A telescopic rod 92 is fixedly installed at one end of the connecting shaft 91, and a bushing 93 is fixedly installed at one end of the telescopic rod 92. A first fastening bolt 94 is provided on the outer surface of the bushing 93. The adjusting slide rod 95 can be adjusted by loosening the first fastening bolt 94. After adjustment, the first fastening bolt 94 can be tightened to re-fix the adjusting slide rod 95, and the height of the welding rod supply device 97 and the welding device 98 can be adjusted at the same time. The adjusting slide rod 95 is slidably connected inside the bushing 93. A connecting rod 96 is fixedly installed at the bottom of the adjusting slide rod 95. The welding rod supply device 97 is provided on the front of the connecting rod 96 near one end, and the welding device 98 is provided on the front of the connecting rod 96 near the other end.

[0024] Please see Figure 4 The welding wire inside the welding electrode supply device 97 is aligned with the front welding head of the welding device 98.

[0025] Please see Figure 2 The connection between the welding equipment 98 and the coupling seat 84 adopts a high-damping design.

[0026] The device allows for height adjustment of the adjusting slide rod 95 by loosening the first fastening bolt 94. After adjustment, the adjusting slide rod 95 can be fixed by tightening the first fastening bolt 94, thereby adjusting the height of the connecting rod 96, the welding rod supply device 97, and the welding device 98. When the valve body to be welded has a large diameter, the height of the welding rod supply device 97 and the welding device 98 can be raised. Similarly, when the valve body to be welded has a small diameter, the height of the welding rod supply device 97 and the welding device 98 can be lowered, making the device adaptable to welding operations of valve bodies with various diameters. In addition, the front position of the welding device 98 can be adjusted by rotating the connection between the connecting shaft 91 and the connecting seat 84, and by adjusting the extension and retraction of the telescopic rod 92, thereby adjusting the position of the welding point and improving the practicality of the device.

[0027] Please see Figure 5 The transmission device 10 includes an adjusting bushing 101. One end of the adjusting bushing 101 is provided with a sliding hole 102. The sliding hole 102 is slidably engaged with the arc-shaped sliding rod 82. A second fastening bolt 103 is provided on one side of the sliding hole 102. The top of the adjusting bushing 101 is connected to a swing arm 104 via a shaft. The front end of the swing arm 104 is fitted with a swing gear 105 via a bearing.

[0028] Please see Figure 1 , Figure 3 and Figure 5 The oscillating gear 105 meshes with the external gear ring 6, and the rotational torque of the arc-shaped slide rod 82 ensures that the oscillating gear 105 and the external gear ring 6 remain meshed at all times.

[0029] By loosening the second fastening bolt 103, the position of the adjusting sleeve 101 on the outer surface of the arc-shaped slide bar 82 can be adjusted. When the adjusting sleeve 101 moves to a position close to the energy storage spring 83, the swing amplitude of the arc-shaped slide bar 82 driven by the transmission device 10 increases, resulting in a wider weld bead, which is suitable for welding operations with larger weld seams. Similarly, when the adjusting sleeve 101 moves to a position close to the connecting shaft seat 84, the swing amplitude of the arc-shaped slide bar 82 decreases, resulting in a narrower weld bead, which is suitable for welding operations with smaller weld seams. This allows the device to determine the swing amplitude of the arc-shaped slide bar 82 during the welding process according to the width of the weld seam of the valve body, making the device suitable for welding valve bodies with weld seams of different widths, thus improving the practicality of the device.

[0030] The power used to drive the arc-shaped slide bar 82 to swing comes from the rotation of the external gear ring 6, thus eliminating the need for additional power equipment, reducing the complexity of the device, and improving its practicality.

[0031] Please see Figure 6 A connecting shaft 1051 is provided on the top of the oscillating gear 105, and the connecting shaft 1051 is fixedly connected to the oscillating gear 105 in an eccentric manner.

[0032] When the power equipment drives the external gear ring 6 to rotate, the meshing of the oscillating gear 105 with the external gear ring 6 will cause the oscillating gear 105 to rotate synchronously. Since the top of the oscillating gear 105 is provided with a connecting shaft 1051, which is fixedly connected to the oscillating gear 105 in an eccentric manner, the oscillating gear 105 will oscillate during rotation and transmit the force to the adjusting sleeve 101 through the oscillating arm 104. Due to the movable connection between the arc-shaped slide rod 82 and the slide hole 102, and the fact that the arc-shaped slide rod 82 is located away from the external gear ring 6, the rotational torque will be affected. During the swing of the oscillating gear 105, the arc-shaped slide bar 82 swings synchronously, thereby causing the welding equipment 98 to swing. This can form fish-scale weld patterns at the weld seam of the valve body during the welding process, thereby improving the strength of the valve body after welding. In addition, since the adjustment device 9 swings as a whole, the welding wire inside the welding rod supply device 97 can always be aligned with the welding head of the welding equipment 98. When swinging at large amplitude, it can avoid the problem of welding interruption caused by misalignment between the welding wire and the welding head of the welding equipment 98, which leads to a decrease in welding strength, thus improving the reliability of the device.

[0033] Please see Figures 6-7 The oscillating gear 105 has different specifications, the difference being the diameter, and the ratio of the longest distance L1 to the shortest distance L2 from the axis of the connecting shaft 1051 to the outer edge of the oscillating gear 105 is the same.

[0034] When welding small-diameter valve bodies, it is necessary to increase the rotation speed of the external gear ring 6 to ensure that the welding speed of the electrode supply device 97 and the welding device 98 at the valve body weld is at an appropriate level. At this time, the swing gear 105 can be replaced. The replaced swing gear 105 has a larger diameter, which reduces the swing frequency of the swing arm 104 driving the arc slide bar 82. This avoids the problem that the swing frequency of the arc slide bar 82 will increase synchronously after the rotation speed of the external gear ring 6 increases, which would lead to an increase in the swing frequency of the welding device 98, causing uneven weld width or even interruption. This improves the practicality of the device.

[0035] The method of using this invention is as follows: During use, the adjusting slide rod 95 can be raised or lowered by loosening the first fastening bolt 94 according to the diameter of the valve body. After adjustment, the adjusting slide rod 95 can be fixed by tightening the first fastening bolt 94, thereby adjusting the height of the connecting rod 96, the welding rod supply device 97, and the welding device 98. When the diameter of the valve body to be welded is large, the height of the welding rod supply device 97 and the welding device 98 can be raised. Similarly, when the diameter of the valve body to be welded is small, the height of the welding rod supply device 97 and the welding device 98 can be lowered, making the device adaptable to welding operations of valve bodies of various diameters. In addition, the connection between the connecting shaft 91 and the connecting seat 84 can be rotated, and the extension and retraction of the telescopic rod 92 can be adjusted. The position of the front end of the welding equipment 98 is adjusted to adjust the position of the welding point. When the power equipment drives the external gear ring 6 to rotate, the oscillating gear 105 meshes with the external gear ring 6, causing the oscillating gear 105 to rotate synchronously. Since the top of the oscillating gear 105 is provided with a connecting shaft 1051, which is fixedly connected to the oscillating gear 105 in an eccentric manner, the oscillating gear 105 oscillates during rotation and transmits the oscillation to the adjusting sleeve 101 through the oscillating arm 104. Due to the movable connection between the arc-shaped slide rod 82 and the sliding hole 102, and the fact that the arc-shaped slide rod 82 is located away from the external gear ring 6 under the action of rotational torque, the oscillating gear 105 will drive the arc-shaped slide rod 82 to rotate synchronously during the oscillation. The oscillation of the adjustment device 98, which in turn causes the welding equipment 98 to oscillate, creates a fish-scale weld pattern at the valve body weld during the welding process, thereby improving the strength of the valve body after welding. Furthermore, the overall oscillation of the adjustment device 98 ensures that the welding wire inside the electrode supply device 97 is always aligned with the welding head of the welding equipment 98. During large-amplitude oscillations, this prevents misalignment between the welding wire and the welding head of the welding equipment 98, which could lead to weld interruption and reduced weld strength. Loosening the second fastening bolt 103 allows adjustment of the position of the adjustment sleeve 101 on the outer surface of the arc-shaped slide rod 82. When the adjustment sleeve 101 moves closer to the energy storage spring 83, the oscillation amplitude of the arc-shaped slide rod 82 driven by the transmission device 10 increases, resulting in a wider weld pattern. The large swing amplitude of the arc-shaped slide bar 82 is suitable for welding operations with larger weld seams. Similarly, when the adjusting sleeve 101 moves to a position close to the coupling seat 84, the swing amplitude of the arc-shaped slide bar 82 decreases, resulting in a smaller weld width, making it suitable for welding operations with smaller weld seams. This allows the device to determine the swing amplitude of the arc-shaped slide bar 82 during the welding process based on the width of the weld seam of the valve body. This makes the device suitable for welding valve bodies with weld seams of different widths. When welding small-diameter valve bodies, it is necessary to increase the rotation speed of the external gear ring 6 to ensure that the welding speed of the electrode supply device 97 and the welding device 98 at the weld seam of the valve body is at an appropriate level. At this time, the swing gear 105 can be replaced, and the replaced swing gear 105 has a larger diameter.This reduces the swing frequency of the swing arm 104 driving the arc-shaped slide bar 82, making it suitable for the high rotational speed of the external gear ring 6.

Claims

1. A valve welding device, characterized in that, Includes a base plate (1), a fixed plate (2) is fixedly installed on the top of the base plate (1) near the middle position, a fixed block (3) is fixedly installed on the front of the fixed plate (2), a sliding groove (4) is provided at the front end of the fixed block (3), a ring body (5) is slidably connected inside the sliding groove (4), an external toothed ring (6) is fixedly installed at the front end of the ring body (5), a cylinder (7) is provided at the top and bottom of the inner ring of the external toothed ring (6), a rocking device (8) is fixedly installed on the top of the base plate (1) near one side, an adjusting device (9) is sleeved on one end of the rocking device (8), and a transmission device (10) is slidably connected to the outer surface of the rocking device (8).

2. The valve welding equipment according to claim 1, characterized in that, The swing device (8) includes a sleeve (81), and an arc-shaped slide rod (82) is movably sleeved on the top of the sleeve (81). An energy storage spring (83) is provided on the top of the sleeve (81) at a position outside the arc-shaped slide rod (82). The fixed end of the energy storage spring (83) is fixedly connected to the arc-shaped slide rod (82). A coupling seat (84) is provided at one end of the arc-shaped slide rod (82).

3. The valve welding equipment according to claim 2, characterized in that, The outer surface of the arc-shaped slide bar (82) is provided with a limit slide rail. The arc-shaped slide bar (82) is set to be arc-shaped, and the arc is the same as the arc of the outer edge of the outer toothed ring (6). The transmission device (10) is slidably installed on the outer surface of the arc-shaped slide bar (82).

4. The valve welding equipment according to claim 2, characterized in that, The adjusting device (9) includes a connecting shaft (91), which is movably sleeved with a connecting shaft seat (84). A telescopic rod (92) is fixedly installed at one end of the connecting shaft (91), and a bushing (93) is fixedly installed at one end of the telescopic rod (92). A first fastening bolt (94) is provided on the outer surface of the bushing (93). An adjusting slide rod (95) is slidably connected inside the bushing (93). A connecting rod (96) is fixedly installed at the bottom of the adjusting slide rod (95). A welding rod supply device (97) is provided on the front of the connecting rod (96) near one end, and a welding device (98) is provided on the front of the connecting rod (96) near the other end. The welding wire inside the electrode supply device (97) is aligned with the front welding head of the welding device (98).

5. The valve welding equipment according to claim 4, characterized in that, The connection between the welding equipment (98) and the coupling seat (84) adopts a high-damping design.

6. A valve welding equipment according to claim 2, characterized in that, The transmission device (10) includes an adjusting bushing (101), one end of which is provided with a sliding hole (102), the sliding hole (102) is slidably engaged with an arc-shaped sliding rod (82), a second fastening bolt (103) is provided on one side of the sliding hole (102), and a swing arm (104) is provided on the top of the adjusting bushing (101) through a shaft connection, and a swing gear (105) is provided on the front end of the swing arm (104) through a bearing.

7. A valve welding equipment according to claim 6, characterized in that, The oscillating gear (105) meshes with the external gear ring (6).

8. A valve welding equipment according to claim 6, characterized in that, The top of the swing gear (105) is provided with a connecting shaft (1051), and the connecting shaft (1051) is fixedly connected to the swing gear (105) in an eccentric manner.

9. A valve welding device according to claim 8, characterized in that, The swing gear (105) has different specifications, the difference being the diameter, and the ratio of the longest distance L1 to the shortest distance L2 from the axis of the connecting shaft (1051) to the outer edge of the swing gear (105) is the same.

10. A welding process for a valve welding equipment as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. First, loosen the first fastening bolt (94), adjust the adjusting slide rod (95) to the highest position, and then use the cylinder (7) to clamp and fix the valve body to be welded. Then lower the height of the adjusting slide rod (95) so that the front end of the welding equipment (98) moves to the weld seam of the valve body. Then tighten the first fastening bolt (94) to fix the adjusting slide rod (95). Then fine-tune the connecting shaft (91) and the telescopic rod (92) to ensure that the welding head of the front end of the welding equipment (98) is in the correct position. S2. Adjust the position of the adjusting sleeve (101) on the outer surface of the arc-shaped slide rod (82) according to the size of the weld. First, loosen the second fastening bolt (103) and then slide the adjusting sleeve (101) directly for connection. The closer the adjusting sleeve (101) is to the energy storage spring (83), the greater the swing amplitude of the arc-shaped slide rod (82). The closer the adjusting sleeve (101) is to the connecting shaft seat (84), the smaller the swing amplitude of the arc-shaped slide rod (82). The width of the weld formed by the welding equipment (98) during the welding process is controlled according to the swing amplitude of the arc-shaped slide rod (82). S3. When welding valve bodies with smaller diameters is required, the rotation speed of the external gear ring (6) needs to be increased, and the swing frequency of the arc slide bar (82) needs to be reduced. At this time, the swing gear (105) with a larger diameter can be replaced to reduce the swing frequency. S4. Start the power equipment to drive the external gear ring (6) to rotate, drive the swing gear (105) to rotate synchronously, and then drive the arc-shaped slide bar (82) to swing synchronously, and drive the welding equipment (98) to swing. During the welding process, fish scale weld patterns can be formed at the weld seam of the valve body, thereby improving the strength of the valve body after welding. During the swing process, the front end of the welding rod inside the welding rod supply equipment (97) is always aligned with the front welding head of the welding equipment (98).

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