A laser welding aid for pipe welding

Abstract

The application discloses a laser welding auxiliary device for pipe welding, and relates to the technical field of laser welding.The laser welding auxiliary device comprises a base, a rotary motor is arranged on the surface of the base, a motor-driven telescopic rod is fixedly installed at the output end of the rotary motor, a hollow pipe is fixedly installed at the fixed end of the motor-driven telescopic rod, an annular pipe body is arranged on the surface of the hollow pipe, a laser welding device is arranged above the base, a long rod is fixedly installed at the output end of the motor-driven telescopic rod, a supporting plate is slidably installed on the inner wall of the hollow pipe, a fixed plate is fixedly installed on the surface of the supporting plate, a guide groove is formed in the surface of the fixed plate, a U-shaped rod is fixedly installed on the circumferential surface of the long rod, and a rotating rod is rotatably installed on the surface of the hollow pipe.The supporting plate is moved away from the U-shaped rod to support the inner wall of the annular pipe body, so that the pipe is prevented from being displaced during welding, and the welding position is prevented from being deviated.

Description

Technical Field

[0001] This invention belongs to the field of laser welding, specifically relating to a laser welding auxiliary device for welding pipe fittings. Background Technology

[0002] Laser welding is a highly efficient and precise welding method that uses a high-energy-density laser beam as a heat source to fuse two workpieces together.

[0003] Patent publication number CN215545805U relates to a laser welding auxiliary device for pipe welding, including a base with two symmetrical welding frames on the base. Each welding frame has a through hole, through which a rotating tube is connected via a bearing. One end of the rotating tube has a three-jaw chuck, and the other end has an external gear. A gear shaft connects the two welding frames via a bearing, and the external gear meshes with the gear shaft. A ring handle is fixedly connected to the side of the external gear away from the welding frame. This laser welding auxiliary device for pipe welding has a simple structure and is easy to operate. By rotating the ring handle, the two annular pipe sections to be welded rotate smoothly and synchronously, while the welding head remains stationary, resulting in high welding precision, high efficiency, and excellent welding effect.

[0004] In the existing technology, by rotating the ring handle, the two ring pipe sections to be welded are rotated smoothly and synchronously, while the welding head remains stationary. This results in high welding precision, high efficiency, and good welding effect. However, the two ring pipe sections may rotate during welding, causing the pipes to shift and affecting the welding effect. At the same time, the left and right sliding of the pipes during the welding process can cause the welding position to deviate, resulting in inaccurate welding of the two ends of the pipes and affecting work efficiency. Summary of the Invention

[0005] Various embodiments of the disclosed technology relate to a laser welding aid for pipe welding that can improve welding results.

[0006] According to the disclosed embodiments, a laser welding auxiliary device for pipe welding includes: a base, a rotary motor disposed on the surface of the base, an electric telescopic rod fixedly mounted at the output end of the rotary motor, a hollow tube fixedly mounted at the fixed end of the electric telescopic rod, an annular pipe body disposed on the surface of the hollow tube, a laser welding device disposed above the base, a long rod fixedly mounted at the output end of the electric telescopic rod, a support plate slidably mounted on the inner wall of the hollow tube, a fixed plate fixedly mounted on the surface of the support plate, a guide groove formed on the surface of the fixed plate, a U-shaped rod fixedly mounted on the circumferential surface of the long rod, a rotating rod rotatably mounted on the surface of the hollow tube, a spiral groove formed on the surface of the rotating rod, the rotating rod being threadedly connected to the long rod, a short plate fixedly mounted on the circumferential surface of the rotating rod, and a limiting slide plate slidably mounted on the surface of the hollow tube. During rotation, the short plate will contact the limiting slide plate, and the short plate will push the limiting slide plate to move away from the short plate.

[0007] In some implementations, a first spring is provided between the hollow tube and the support plate, and the support plate is reset by the elastic force of the first spring. A second spring is provided between the hollow tube and the limiting slide plate, and the limiting slide plate is reset by the elastic force of the second spring.

[0008] In some implementations, the limiting device includes an L-shaped rod, a pulley, and a rotating plate. The L-shaped rod is fixedly installed on the circumferential surface of the long rod, the pulley is rotatably installed on the inner wall of the L-shaped rod, and the rotating plate is rotatably installed on the inner wall of the hollow tube. When one end of the rotating plate rotates upward, it will drive the other end of the rotating plate to rotate towards the tube.

[0009] In some implementations, an L-shaped frame is fixedly installed at the output end of the electric telescopic rod, a connecting plate is fixedly installed on the surface of the L-shaped frame, and a ring is fixedly installed on the surface of the connecting plate. When the connecting plate moves away from the rotating motor, it will drive the ring to move away from the rotating motor, and the ring will hold the pipe in place by moving away from the rotating motor.

[0010] In some implementations, a torsion spring is provided between the rotating plate and the hollow tube. The rotating plate is reset by the elastic force of the torsion spring itself. The rotating plate is used to limit the position of the annular tube body.

[0011] In some implementations, the support device includes a fixed frame, a guide frame, a connecting rod, a sliding frame, and a short rod. The fixed frame is fixedly installed on the top of the base, the guide frame is slidably installed on the surface of the fixed frame, and a groove is formed on the surface of the guide frame. The connecting rod is fixedly installed on the surface of the guide frame, the sliding frame is slidably installed on the surface of the fixed frame, and the short rod is fixedly installed on the surface of the sliding frame. When the short rods move towards each other, they will cause the sliding frames to move towards each other. The movement of the sliding frames towards each other will block the area to be welded, exposing the joint.

[0012] In some implementations, a connecting frame is fixedly mounted on the surface of the short rod, and a pulley frame is fixedly mounted on the surface of the connecting frame. Moving the connecting frame upward will cause the pulley frame to move upward.

[0013] In some implementations, a third spring is provided between the guide frame and the fixed frame, and the guide frame is reset by the elastic force of the third spring. A fourth spring is provided between the sliding frame and the fixed frame, and the sliding frame is reset by the elastic force of the fourth spring.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention supports the inner wall of the annular pipe by moving a support plate away from the U-shaped rod, preventing displacement of the pipe during welding, which could lead to welding position deviations and affect the welding effect. After the support plate supports the inner wall of the pipe, welding is performed using laser welding equipment. Then, a rotary motor drives the pipe to adjust its angle, ensuring that the two ends of the pipe are aligned for welding. At the same time, the short plate will contact the limiting slide plate during rotation, and the short plate will push the limiting slide plate away from the short plate. The movement of the limiting slide plate away from the short plate will block the top of the hollow pipe, preventing the user from inserting or removing the pipe, thus preventing anyone from directly removing the pipe during the welding process and avoiding safety hazards.

[0015] 2. This invention uses a rotating plate to rotate towards the pipe, pushing the pipe closest to the rotating plate towards another pipe section, thus limiting the pipe and preventing it from moving back and forth during welding, which would affect the welding effect. At the same time, the connecting plate moves away from the rotating motor, which in turn moves the ring away from the rotating motor, holding the pipe in place and ensuring that the welding point is below the laser welding equipment. This prevents gaps between the two pipe sections, which could cause the welded workpiece to break easily and affect the welding effect.

[0016] 3. This invention utilizes the opposing movement of short rods to drive the opposing movement of sliding frames. This opposing movement of the sliding frames blocks the area to be welded, exposing the joint. This prevents deviations in the laser welding equipment during welding, which could lead to incomplete welding and direct laser exposure of the pipe surface, affecting the welding effect. By blocking both sides, the overall welding effect is improved, avoiding welding misalignment that could cause defects in the pipe. Simultaneously, when the short rods move towards each other, the upward movement of the lower short rod drives the upward movement of the connecting frame, which in turn drives the upward movement of the pulley frame. The upward movement of the pulley frame supports the bottom of the pipe, improving the stability during welding and preventing welding tilt that could create gaps at the joint and affect the welding effect. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the present invention; Figure 2This is a schematic diagram of the connecting frame and pulley frame in this invention; Figure 3 This is a schematic diagram of the sliding frame and guide frame in this invention; Figure 4 This is a schematic cross-sectional view of the hollow tube in this invention; Figure 5 This is a schematic diagram showing the positions of the L-shaped plate and the connecting plate in this invention; Figure 6 This is a schematic diagram showing the positions of the fixing plate and the guide groove in this invention; Figure 7 This is a schematic diagram showing the positions of the rotating rod and the spiral groove in this invention.

[0018] Figure label: 1. Base; 2. Rotary motor; 3. Electric telescopic rod; 4. Hollow tube; 5. Long rod; 6. Annular tube body; 7. Fixing plate; 8. Guide groove; 9. U-shaped rod; 10. Support plate; 11. Rotating rod; 12. Spiral groove; 13. Short plate; 14. Limiting slide plate; 151. L-shaped rod; 152. Pulley; 153. Rotating plate; 154. L-shaped frame; 155. Connecting plate; 156. Ring; 161. Fixing frame; 162. Guide frame; 163. Connecting rod; 164. Sliding frame; 165. Short rod; 166. Connecting frame; 167. Pulley frame. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] like Figures 1 to 5As shown, a laser welding auxiliary device for pipe welding in this embodiment includes: a base 1, a rotary motor 2 disposed on the surface of the base 1, an electric telescopic rod 3 fixedly mounted on the output end of the rotary motor 2, a hollow tube 4 fixedly mounted on the fixed end of the electric telescopic rod 3, an annular pipe body 6 disposed on the surface of the hollow tube 4, a laser welding device disposed above the base 1, a long rod 5 fixedly mounted on the output end of the electric telescopic rod 3, a support plate 10 slidably mounted on the inner wall of the hollow tube 4, a fixing plate 7 fixedly mounted on the surface of the support plate 10, a guide groove 8 formed on the surface of the fixing plate 7, and a U-shaped groove fixedly mounted on the circumferential surface of the long rod 5. A rotating rod 11 is rotatably mounted on the surface of the hollow tube 4. The rotating rod 11 has a spiral groove 12 on its surface. The rotating rod 11 is threadedly connected to the long rod 5. A short plate 13 is fixedly mounted on the circumference of the rotating rod 11. A limiting slide plate 14 is slidably mounted on the surface of the hollow tube 4. During the rotation of the short plate 13, it will contact the limiting slide plate 14. The short plate 13 will push the limiting slide plate 14 to move away from the short plate 13. The movement of the limiting slide plate 14 away from the short plate 13 will block the top of the hollow tube 4, preventing the user from inserting or removing the tube. This prevents someone from directly removing the tube during the welding process, which would pose a safety hazard.

[0021] A first spring is installed between the hollow tube 4 and the support plate 10. The support plate 10 is reset by the elastic force of the first spring. A second spring is installed between the hollow tube 4 and the limiting slide plate 14. The limiting slide plate 14 is reset by the elastic force of the second spring.

[0022] In this embodiment, during operation: the annular pipe body 6 at both ends is fitted onto the hollow pipe 4. Then, the electric telescopic rod 3 is activated. The output end of the electric telescopic rod 3 moves away from the rotary motor 2, which in turn moves the long rod 5 away from the rotary motor 2. The long rod 5 moving away from the rotary motor 2 in turn moves the U-shaped rod 9 away from the rotary motor 2. The U-shaped rod 9, moving away from the rotary motor 2, contacts the inclined surface of the guide groove 8. The U-shaped rod 9 presses against the guide groove 8, causing the fixing plate 7 to move away from the U-shaped rod 9. The movement of the fixing plate 7 away from the U-shaped rod 9 in turn moves the support plate 10 away from the U-shaped rod 9. The movement of the support plate 10 away from the U-shaped rod 9 supports the inner wall of the annular pipe body 6, preventing pipe damage during welding. The displacement of the components causes deviations in the welding position, affecting the welding effect. After the support plate 10 supports the inner wall of the pipe, welding is performed by laser welding equipment. Then, the rotary motor 2 drives the pipe to adjust the angle to ensure that the two ends of the pipe are aligned for welding. At the same time, the long rod 5 moves away from the rotary motor 2, which will squeeze the rotating rod 11 to rotate along the direction of the spiral groove 12. The rotation of the rotating rod 11 will drive the short plate 13 to rotate. During the rotation of the short plate 13, it will contact the limiting slide plate 14. The short plate 13 will push the limiting slide plate 14 to move away from the short plate 13. The movement of the limiting slide plate 14 away from the short plate 13 will block the top of the hollow tube 4, preventing the user from inserting or removing the pipe, thus preventing anyone from directly removing the pipe during the welding process, which would pose a safety hazard. Example

[0023] like Figures 1 to 7 As shown, this embodiment of a laser welding auxiliary device for pipe welding includes all the technical features of Embodiment 1. In addition, the hollow tube 4 is provided with a limiting device and a supporting device for limiting the annular pipe body 6. The limiting device includes an L-shaped rod 151, a pulley 152 and a rotating plate 153. The L-shaped rod 151 is fixedly installed on the circumferential surface of the long rod 5. The pulley 152 is rotatably installed on the inner wall of the L-shaped rod 151. The rotating plate 153 is rotatably installed on the inner wall of the hollow tube 4. When one end of the rotating plate 153 rotates upward, it will drive the other end of the rotating plate 153 to rotate towards the pipe. By rotating the rotating plate 153 towards the pipe, the pipe that is close to the rotating plate 153 is pushed towards the other pipe section, so that the two pipe sections are fully aligned and the gap between them is avoided.

[0024] An L-shaped frame 154 is fixedly installed at the output end of the electric telescopic rod 3. A connecting plate 155 is fixedly installed on the surface of the L-shaped frame 154. A ring 156 is fixedly installed on the surface of the connecting plate 155. When the connecting plate 155 moves away from the rotary motor 2, it will drive the ring 156 to move away from the rotary motor 2. By moving the ring 156 away from the rotary motor 2, the pipe is held in place, ensuring that the welding point is below the laser welding equipment. This prevents gaps between the two pipes, which could cause the welded workpiece to break easily and affect the welding effect.

[0025] A torsion spring is provided between the rotating plate 153 and the hollow tube 4. The rotating plate 153 is reset by the elastic force of the torsion spring itself. The rotating plate 153 is used to limit the position of the annular tube body 6.

[0026] In this embodiment, during operation: the long rod 5 moves away from the rotary motor 2, causing the L-shaped rod 151 to move away from the rotary motor 2. This movement of the L-shaped rod 151 away from the rotary motor 2 causes the pulley 152 to move away from the rotary motor 2. The pulley 152's movement away from the rotary motor 2 pushes one end of the rotating plate 153 upwards. This upward rotation of one end of the rotating plate 153 causes the other end of the rotating plate 153 to rotate towards the pipe fitting. This rotation of the rotating plate 153 towards the pipe fitting pushes the pipe fitting closer to the rotating plate 153 towards another section of the pipe fitting, thus limiting the pipe fitting and preventing it from being welded during the welding process. The component can move back and forth, affecting the welding effect. At the same time, when the output end of the electric telescopic rod 3 moves away from the rotary motor 2, it will drive the L-shaped frame 154 to move away from the rotary motor 2. The movement of the L-shaped frame 154 away from the rotary motor 2 will drive the connecting plate 155 away from the rotary motor 2. The movement of the connecting plate 155 away from the rotary motor 2 will drive the ring 156 away from the rotary motor 2. The movement of the ring 156 away from the rotary motor 2 will hold the pipe in place, ensuring that the welding point is below the laser welding equipment, preventing gaps between the two pipes, which would cause the welded workpiece to break easily and affect the welding effect.

[0027] The support device includes a fixed frame 161, a guide frame 162, a connecting rod 163, a sliding frame 164, and a short rod 165. The fixed frame 161 is fixedly installed on the top of the base 1. The guide frame 162 is slidably installed on the surface of the fixed frame 161, and a groove is provided on the surface of the guide frame 162. The connecting rod 163 is fixedly installed on the surface of the guide frame 162. The sliding frame 164 is slidably installed on the surface of the fixed frame 161. The short rod 165 is fixedly installed on the surface of the sliding frame 164. When the short rod 165 moves towards each other, it will cause the sliding frame 164 to move towards each other. The movement of the sliding frame 164 towards each other will block the area to be welded, exposing the joint. This prevents deviation of the laser welding equipment during welding, which could lead to failure to weld the joint and direct laser radiation on the surface of the pipe, affecting the welding effect. By blocking both sides, the overall welding effect is improved, and welding misalignment can be avoided, which could cause defects in the pipe.

[0028] A connecting bracket 166 is fixedly installed on the surface of the short rod 165, and a pulley bracket 167 is fixedly installed on the surface of the connecting bracket 166. When the connecting bracket 166 moves upward, it will drive the pulley bracket 167 to move upward. The upward movement of the pulley bracket 167 supports the bottom of the pipe, improves the stability during welding, and prevents the welding from tilting, which would cause gaps at the joint and affect the welding effect.

[0029] A No. 3 spring is provided between the guide frame 162 and the fixed frame 161. The guide frame 162 is reset by the elastic force of the No. 3 spring. A No. 4 spring is provided between the sliding frame 164 and the fixed frame 161. The sliding frame 164 is reset by the elastic force of the No. 4 spring.

[0030] The movement of the ring 156 away from the rotary motor 2 pushes the connecting rod 163 to move away from the rotary motor 2. This movement of the connecting rod 163 causes the guide frame 162 to move away from the rotary motor 2. The guide frame 162 then causes the slide rail to move away from the rotary motor 2. This movement of the slide rail compresses the two short rods 165, causing them to move towards each other. The movement of the short rods 165 towards each other causes the sliding frame 164 to move towards each other. This movement of the sliding frame 164 blocks the area to be welded, thus facilitating the connection. The exposed areas prevent deviations in the laser welding equipment during welding, which could lead to incomplete welding at the joint and direct laser exposure of the pipe surface, affecting the welding effect. By blocking both sides, the overall welding effect is improved, avoiding welding misalignment that could cause defects in the pipe. At the same time, when the short rods 165 move towards each other, the upward movement of the lower short rod 165 will drive the connecting frame 166 to move upward, which in turn will drive the pulley frame 167 to move upward. The upward movement of the pulley frame 167 supports the bottom of the pipe, improving the stability during welding and preventing welding tilt that could cause gaps at the joint and affect the welding effect.

[0031] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0032] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A laser welding auxiliary device for pipe welding, comprising: A base (1) is provided with a rotary motor (2) on its surface. An electric telescopic rod (3) is fixedly installed at the output end of the rotary motor (2). A hollow tube (4) is fixedly installed at the fixed end of the electric telescopic rod (3). An annular tube body (6) is provided on the surface of the hollow tube (4). A laser welding device is provided above the base (1). The base (1) is characterized in that: The output end of the electric telescopic rod (3) is fixedly installed with a long rod (5), the inner wall of the hollow tube (4) is slidably installed with a support plate (10), the surface of the support plate (10) is fixedly installed with a fixing plate (7), the surface of the fixing plate (7) is provided with a guide groove (8), the circumferential surface of the long rod (5) is fixedly installed with a U-shaped rod (9), the surface of the hollow tube (4) is rotatably installed with a rotating rod (11), the surface of the rotating rod (11) is provided with a spiral groove (12), the rotating rod (11) is threadedly connected to the long rod (5), the circumferential surface of the rotating rod (11) is fixedly installed with a short plate (13), and the surface of the hollow tube (4) is slidably installed with a limit sliding plate (14).

2. The laser welding auxiliary device for pipe welding according to claim 1, characterized in that, A first spring is provided between the hollow tube (4) and the support plate (10), and a second spring is provided between the hollow tube (4) and the limiting slide plate (14). A limiting device and a supporting device for limiting the annular tube body (6) are provided on the hollow tube (4).

3. The laser welding auxiliary device for pipe welding according to claim 2, characterized in that, The limiting device includes an L-shaped rod (151), a pulley (152) and a rotating plate (153). The L-shaped rod (151) is fixedly installed on the circumferential surface of the long rod (5). The pulley (152) is rotatably installed on the inner wall of the L-shaped rod (151). The rotating plate (153) is rotatably installed on the inner wall of the hollow tube (4).

4. The laser welding auxiliary device for pipe welding according to claim 3, characterized in that, An L-shaped frame (154) is fixedly installed at the output end of the electric telescopic rod (3), a connecting plate (155) is fixedly installed on the surface of the L-shaped frame (154), and a ring (156) is fixedly installed on the surface of the connecting plate (155).

5. A laser welding auxiliary device for pipe welding according to claim 4, characterized in that, A torsion spring is provided between the rotating plate (153) and the hollow tube (4), and the rotating plate (153) is used to limit the position of the annular tube body (6).

6. The laser welding auxiliary device for pipe welding according to claim 5, characterized in that, The support device includes a fixed frame (161), a guide frame (162), a connecting rod (163), a sliding frame (164), and a short rod (165). The fixed frame (161) is fixedly installed on the top of the base (1). The guide frame (162) is slidably installed on the surface of the fixed frame (161). A sliding groove is provided on the surface of the guide frame (162). The connecting rod (163) is fixedly installed on the surface of the guide frame (162). The sliding frame (164) is slidably installed on the surface of the fixed frame (161). The short rod (165) is fixedly installed on the surface of the sliding frame (164).

7. The laser welding auxiliary device for pipe welding according to claim 6, characterized in that, A connecting frame (166) is fixedly installed on the surface of the short rod (165), and a pulley frame (167) is fixedly installed on the surface of the connecting frame (166).

8. A laser welding auxiliary device for pipe welding according to claim 7, characterized in that, A No. 3 spring is provided between the guide frame (162) and the fixed frame (161), and a No. 4 spring is provided between the sliding frame (164) and the fixed frame (161).

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