Center alignment adjusting device of rotary welding machine

Abstract

The utility model provides a center alignment adjusting device of a rotary welding machine. The center alignment adjusting device comprises a bottom positioning mechanism, a side positioning mechanism and a two-axis displacement platform. The bottom positioning mechanism is used for clamping a to-be-welded part of a liquid passing pipe of the control valve seat; the side positioning mechanism is used for clamping a to-be-welded part of a liquid passing pipe of a pipe joint seat; and the two-axis displacement platform is used for driving the bottom positioning mechanism or the side positioning mechanism to move left and right and back and forth, so that the welding seam circumference of the to-be-welded part of the control valve seat liquid passing pipe is concentric with the rotating circumference of the welding gun, or the welding seam circumference of the to-be-welded part of the pipe joint seat liquid passing pipe is concentric with the rotating circumference of the welding gun. According to the center alignment adjusting device of the rotary welding machine, centering adjustment and clamping during welding of a control valve seat and a liquid passing pipe can be completed, and centering adjustment and clamping during welding of a pipe joint seat and the liquid passing pipe can be completed when a side positioning mechanism is installed; the problems that due to lack of a special clamp, adjustment and alignment are difficult, and the welding precision cannot be guaranteed are solved.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures, and more specifically, to a rotary welding machine center alignment adjustment device. Background Technology

[0002] Hydraulic cylinder accessories such as control valve seats, pipe fittings, and fluid supply pipes are important components of the hydraulic cylinder system, and their welding quality directly affects the cylinder's performance and lifespan. To improve efficiency, rotary welding machines can be used to weld the fluid supply pipes and valve seats. However, this method has several drawbacks: the workpiece needs multiple measurements to align its rotation center on the rotary welding machine's worktable; there are no fixed points on the workpiece's worktable, resulting in poor workpiece stability; furthermore, due to the fixed rotation center of the welding torch and the misalignment of the bevel circumference between the fluid supply pipe / valve seat and the welding torch's rotation circumference, the welding torch's direction may deviate from the bevel, compromising weld size and strength, and making weld cracking and leakage highly likely.

[0003] Patent CN119016973B discloses a fire pump impeller machining straightening and shaping device, including a blade synchronous straightening mechanism, a blade straightening control mechanism, an internal support coaxial fastening mechanism, and a rotary welding mechanism. This fire pump impeller machining straightening and shaping device proposes a blade straightening control mechanism. Through a linkage mechanism, when adjusting the outer rotating ring, the inner rotating ring can rotate in tandem. When adjusting the curvature, only the position of the inner straightening rod needs to be adjusted. Furthermore, since the robotic arm needs to rotate during welding of the evenly distributed annular arc-shaped blades, this fire pump impeller machining straightening and shaping device proposes an internal support coaxial fastening mechanism. Through the rotational movement of the robotic arm, the impeller base plate is automatically positioned and locked in place via internal expansion before welding, greatly simplifying the structure and operation steps. However, this fire pump impeller machining and straightening device is a specific device for welding fire pump impellers. It cannot clamp and position the liquid pipe and valve seat, does not improve the concentricity of the bevel circumference of the liquid pipe and valve seat with the rotation circumference of the welding torch, and does not solve the problems of the workpiece not being able to be fixed, poor stability, difficulty in adjustment and alignment, and inability to guarantee welding accuracy. Utility Model Content

[0004] To address the problem of difficulty in adjusting and aligning the liquid-conducting pipe and the inability to guarantee welding accuracy due to the lack of specialized fixtures when welding the liquid-conducting pipe onto the control valve seat and pipe fitting seat, the technical solution adopted by this utility model is: a rotary welding machine center alignment adjustment device, including a bottom positioning mechanism, a side positioning mechanism and a two-axis displacement platform;

[0005] The bottom positioning mechanism or the side positioning mechanism can be detachably installed on the top of the two-axis displacement platform;

[0006] The bottom positioning mechanism is used to clamp the control valve seat liquid inlet pipe to be welded.

[0007] The side positioning mechanism is used to clamp the liquid-passing pipe to be welded from the pipe joint seat.

[0008] The two-axis displacement platform is used to drive the bottom positioning mechanism or the side positioning mechanism to move left and right and forward and backward, so that the weld circumference of the control valve seat liquid pipe to be welded is concentric with the welding torch rotation circumference, or so that the weld circumference of the pipe joint seat liquid pipe to be welded is concentric with the welding torch rotation circumference.

[0009] Based on the above, in order to improve the versatility of the device and facilitate the replacement and installation of the bottom positioning mechanism and the side positioning mechanism, a positioning hole is provided on the top of the two-axis displacement platform, and positioning protrusions that cooperate with the positioning hole are respectively provided on the bottom of the bottom positioning mechanism and the bottom of the side positioning mechanism.

[0010] Based on the above, the two-axis displacement platform includes a lower base, a lower slider, an upper base, and an upper fixed base plate. The upper base is connected to the lower slider and is located directly above the lower base.

[0011] The lower slider is slidably disposed within the lower base; the upper fixed base plate is slidably disposed within the upper base, and the sliding direction of the lower slider is perpendicular to the sliding direction of the upper fixed base plate.

[0012] Based on the above, in order to facilitate the smooth sliding of the lower slider and the upper fixed base plate, guide rods for guiding are respectively provided in the lower base and the upper base.

[0013] Based on the above, in order to be used in conjunction with a rotary welding machine, the bottom of the lower base is provided with a lower base mounting boss for use with the rotary welding machine.

[0014] Based on the above, the positioning hole is located at the center of the upper fixed base plate.

[0015] Based on the above, in order to facilitate installation, the top of the bottom positioning mechanism is provided with a control valve seat fixing boss that cooperates with the control valve seat.

[0016] Based on the above, the side positioning mechanism includes a connecting base plate and a positioning side plate. The positioning side plate is perpendicular to the connecting base plate. The bottom of the connecting base plate is provided with the positioning protrusion. The connecting base plate is detachably connected to the upper fixed seat plate through the positioning protrusion.

[0017] Based on the above, in order to improve the versatility of the side positioning mechanism and enable it to clamp pipe fittings of different sizes and specifications, the connecting base plate is provided with an assembly strip hole, which is used to adjust the installation position of the positioning side plate; the positioning side plate is provided with a vertical strip hole, which is used to adjust the position of the pipe fitting installed on the positioning side plate.

[0018] Based on the above, in order to facilitate the assembly and connection of the positioning side plate and the connecting base plate, a positioning strip is provided at the bottom of the positioning side plate, and an assembly slot for cooperating with the positioning strip is provided on the connecting base plate.

[0019] This utility model has substantial features and advancements compared to existing technologies. Specifically, the rotary welding machine center alignment adjustment device provided by this utility model provides a two-axis displacement platform that can move forward and backward and left and right. It also designs a bottom positioning mechanism and a side positioning mechanism that can be used in conjunction with the two-axis displacement platform. After the bottom positioning mechanism and the side positioning mechanism are installed on the two-axis displacement platform, the workpiece clamped in the bottom positioning mechanism and the side positioning mechanism can be aligned by adjusting the left and right position and the forward and backward position of the two-axis displacement platform. This ensures the concentricity of the working circumference and the rotation circumference of the welding torch and avoids welding deviation.

[0020] Furthermore, by integrating the structures of the bottom positioning mechanism and the side positioning mechanism, the side positioning mechanism is designed as a connection between the base plate and the positioning side plate. This allows the bottom positioning mechanism and the connecting base plate to be assembled and fixed using a single upper fixed seat plate, improving the versatility of the two-axis displacement platform. This enables the platform to complete the centering adjustment and clamping when welding the control valve seat to the liquid pipe during the installation of the bottom positioning mechanism, and to complete the centering adjustment and clamping when welding the pipe joint seat to the liquid pipe during the installation of the side positioning mechanism.

[0021] Furthermore, by opening mounting slots on the connecting base plate of the bottom positioning mechanism and vertical slots on the positioning side plate, the position of the positioning side plate on the connecting base plate and the position of the pipe fitting seat on the positioning side plate can be adjusted according to the size of the pipe fitting seat, thus satisfying the welding work of valve seat liquid passage pipes of different types, models and sizes.

[0022] Therefore, applying this rotary welding machine center alignment adjustment device to the liquid pipe valve seat welding machine production line can solve the problems of workpieces being unable to be fixed, poor stability, and difficulty in adjustment and alignment, thus ensuring welding accuracy. It improves the concentricity of the bevel circumference of the liquid pipe and valve seat with the rotation circumference of the welding torch, avoids welding deviation, and improves welding quality and efficiency. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the assembly structure of the rotary welding machine center alignment adjustment device and the bottom positioning mechanism provided by this utility model.

[0024] Figure 2 This is a schematic diagram of the assembly structure of the rotary welding machine center alignment adjustment device and the side positioning mechanism provided by this utility model.

[0025] Figure 3 This is a schematic diagram of the top structure of the two-axis displacement platform in the rotary welding machine center alignment adjustment device provided by this utility model.

[0026] Figure 4 This is a schematic diagram of the bottom structure of the two-axis displacement platform in the rotary welding machine center alignment adjustment device provided by this utility model.

[0027] Figure 5 This is a schematic diagram of the positioning side plate structure in the rotary welding machine center alignment adjustment device provided by this utility model.

[0028] Figure 6 This is a schematic diagram of the upper structure of the connecting base plate in the center alignment and adjustment device for a rotary welding machine provided by this utility model.

[0029] Figure 7 This is a schematic diagram of the cross-sectional structure of the connecting base plate in the rotary welding machine center alignment adjustment device provided by this utility model.

[0030] Figure 8 This is a cross-sectional schematic diagram of the bottom positioning mechanism in the rotary welding machine center alignment adjustment device provided by this utility model.

[0031] In the diagram: 1. Lower base; 2. Lower screw; 3. Upper base; 4. Upper guide rod; 5. Upper fixed base plate; 6. Bottom positioning mechanism; 7. Control valve seat fixing boss; 8. Upper screw; 9. Lower slider; 10. Lower guide rod; 11. Connecting base plate; 12. Positioning side plate; 13. Vertical strip hole; 14. Assembly slot; 15. Assembly strip hole; 16. Positioning round hole; 17. Positioning strip; 18. First positioning boss; 19. Second positioning boss; 20. Lower base assembly boss. Detailed Implementation

[0032] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0033] Example 1

[0034] This embodiment provides a rotary welding machine center alignment adjustment device, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 andFigure 8 As shown, it includes a bottom positioning mechanism 6, a side positioning mechanism, and a two-axis displacement platform. The bottom positioning mechanism 6 or the side positioning mechanism is detachably mounted on the top of the two-axis displacement platform. The bottom positioning mechanism 6 is used to clamp the control valve seat fluid inlet pipe to be welded; the side positioning mechanism is used to clamp the pipe connector seat fluid inlet pipe to be welded.

[0035] The two-axis displacement platform is used to drive the bottom positioning mechanism 6 or the side positioning mechanism to move left and right and forward and backward, so that the weld circumference of the control valve seat liquid pipe to be welded is concentric with the welding torch rotation circumference, or so that the weld circumference of the pipe joint seat liquid pipe to be welded is concentric with the welding torch rotation circumference.

[0036] In this embodiment, to improve the versatility of the device and facilitate the replacement and installation of the bottom positioning mechanism 6 and the side positioning mechanism, a positioning hole 16 is provided on the top of the two-axis displacement platform. The bottom of the bottom positioning mechanism 6 and the bottom of the side positioning mechanism are respectively provided with positioning protrusions that cooperate with the positioning hole 16. Based on their distribution, they can be respectively referred to as the first positioning protrusion 18 and the second positioning protrusion 19.

[0037] Specifically, such as Figure 3 and Figure 4 As shown, the two-axis displacement platform includes a lower base 1, a lower slider 9, an upper base 3, and an upper fixed base plate 5. The upper base 3 is connected to the lower slider 9 and is located directly above the lower base 1. The positioning hole 16 is located at the center of the upper fixed base plate 5.

[0038] The lower slider 9 is slidably disposed within the lower base 1; the upper fixed base plate 5 is slidably disposed within the upper base 3. The sliding direction of the lower slider 9 is perpendicular to the sliding direction of the upper fixed base plate 5. For use with a rotary welding machine, the bottom of the lower base 1 is provided with a lower base mounting boss 20 for use with the rotary welding machine. For ease of installation, the top of the bottom positioning mechanism 6 is provided with a control valve seat fixing boss 7 for use with the control valve seat.

[0039] Specifically, such as Figure 2 , Figure 4 and Figure 5 As shown, the side positioning mechanism includes a connecting base plate 11 and a positioning side plate 12. The positioning side plate 12 is perpendicular to the connecting base plate 11, and the bottom of the connecting base plate 11 is provided with the positioning protrusion. The connecting base plate 11 is detachably connected to the upper fixed seat plate 5 through the positioning protrusion.

[0040] Example 2

[0041] This embodiment provides a center alignment adjustment device for a rotary welding machine. The main difference from Embodiment 1 is that, in this embodiment, to facilitate smooth sliding of the lower slider and the upper fixed base plate, guide rods for guidance are respectively provided inside the lower base and the upper base. Based on their distribution, they can be designated as upper guide rod 4 and lower guide rod 10. Specifically, a lower screw 2 is provided inside the lower base 1, and an upper screw 8 is provided inside the upper base 3. The lower slider 9 is threadedly engaged with the lower screw 2, and the lower slider 9 is slidably engaged with the lower guide rod 10. The upper fixed base plate 5 is threadedly engaged with the upper screw 8, and the upper fixed base plate 5 is slidably engaged with the upper guide rod 4.

[0042] Example 3

[0043] This embodiment provides a rotary welding machine center alignment adjustment device. The main difference from Embodiment 1 is that, in this embodiment, in order to improve the versatility of the side positioning mechanism and enable it to clamp pipe fittings of different sizes and specifications, the connecting base plate 11 is provided with an assembly strip hole 15, which is used to adjust the installation position of the positioning side plate 12; the positioning side plate 12 is provided with a vertical strip hole 13, which is used to adjust the position of the pipe fitting installed on the positioning side plate 12.

[0044] Example 4

[0045] This embodiment provides a rotary welding machine center alignment adjustment device. The main difference from Embodiment 1 is that, in order to facilitate the assembly and connection of the positioning side plate and the connecting base plate, the bottom of the positioning side plate 12 is provided with a positioning strip 17, and the connecting base plate 11 is provided with an assembly slot 14 that cooperates with the positioning strip 17.

[0046] Specifically, when using the center alignment adjustment device of this rotary welding machine to clamp and weld the workpiece to be welded, the specific operating steps are as follows:

[0047] like Figure 1 As shown, first, the two-axis displacement platform is installed on the rotary welding machine. Then, the hole at the bottom of the control valve seat is positioned and fixed by engaging the control valve seat fixing boss at the top of the bottom positioning mechanism. The liquid passage pipe is pre-installed on the control valve seat. By adjusting the two-axis displacement platform, the bevel circumference of the liquid passage pipe and the control valve seat is made concentric with the rotation circumference of the welding torch. The rotary welding machine is then used to weld the bevel at this point.

[0048] Specifically, when using the center alignment adjustment device of this rotary welding machine to weld the clamped pipe fitting seat liquid pipe to be welded, the specific operating steps are as follows:

[0049] like Figure 2As shown, the two-axis displacement platform is first installed on the rotary welding machine, and then the side positioning mechanism is installed on the top of the two-axis displacement platform. The pipe fitting seat is fixed to the vertical slot on the positioning side plate via a positioning pin through a hole on the side. The liquid-passing pipe mates with a hole on the top of the pipe fitting seat. By adjusting the moving platform, the bevel circumference of the liquid-passing pipe and the pipe fitting seat is made concentric with the rotation circumference of the welding torch, and the rotary welding machine welds the bevel at this location.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A center alignment adjustment device for a rotary welding machine, characterized in that: Includes a bottom positioning mechanism, a side positioning mechanism, and a two-axis displacement platform; The bottom positioning mechanism or the side positioning mechanism can be detachably installed on the top of the two-axis displacement platform; The bottom positioning mechanism is used to clamp the control valve seat liquid inlet pipe to be welded. The side positioning mechanism is used to clamp the liquid-passing pipe to be welded from the pipe joint seat. The two-axis displacement platform is used to drive the bottom positioning mechanism or the side positioning mechanism to move left and right and forward and backward, so that the weld circumference of the control valve seat liquid pipe to be welded is concentric with the welding torch rotation circumference, or so that the weld circumference of the pipe joint seat liquid pipe to be welded is concentric with the welding torch rotation circumference.

2. The rotary welding machine center alignment adjustment device according to claim 1, characterized in that: The top of the two-axis displacement platform is provided with a positioning hole, and the bottom of the bottom positioning mechanism and the bottom of the side positioning mechanism are respectively provided with positioning protrusions that cooperate with the positioning hole.

3. The rotary welding machine center alignment adjustment device according to claim 2, characterized in that: The two-axis displacement platform includes a lower base, a lower slider, an upper base, and an upper fixed base plate. The upper base is connected to the lower slider and is located directly above the lower base. The lower slider is slidably disposed within the lower base; the upper fixed base plate is slidably disposed within the upper base, and the sliding direction of the lower slider is perpendicular to the sliding direction of the upper fixed base plate.

4. The rotary welding machine center alignment adjustment device according to claim 3, characterized in that: Guide rods for guiding are respectively provided inside the lower base and the upper base.

5. The rotary welding machine center alignment adjustment device according to claim 4, characterized in that: The bottom of the lower base is provided with a lower base mounting boss for use with a rotary welding machine.

6. The rotary welding machine center alignment adjustment device according to claim 3, 4, or 5, characterized in that: The positioning hole is located at the center of the upper fixed base plate.

7. The rotary welding machine center alignment and adjustment device according to any one of claims 1 to 5, characterized in that: The bottom positioning mechanism is provided with a control valve seat fixing boss at the top, which is used in conjunction with the control valve seat.

8. The rotary welding machine center alignment adjustment device according to claim 3, 4, or 5, characterized in that: The side positioning mechanism includes a connecting base plate and a positioning side plate. The positioning side plate is perpendicular to the connecting base plate. The bottom of the connecting base plate is provided with the positioning protrusion. The connecting base plate is detachably connected to the upper fixed seat plate through the positioning protrusion.

9. The rotary welding machine center alignment adjustment device according to claim 8, characterized in that: The connecting base plate has an assembly strip hole for adjusting the installation position of the positioning side plate; the positioning side plate has a vertical strip hole for adjusting the position of the pipe connector seat installed on the positioning side plate.

10. The rotary welding machine center alignment adjustment device according to claim 9, characterized in that: The bottom of the positioning side plate is provided with a positioning strip, and the connecting base plate is provided with an assembly slot that cooperates with the positioning strip.

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