A laser device for welding pipes

Abstract

The present invention belongs to the technical field of laser welding equipment, in particular to a laser device for welding pipes, which includes a table board. An L-shaped supporting plate is arranged on the top of the table board, and a baffle is arranged on the supporting plate. A first motor and two symmetrically distributed guide rods are fixed at the feeding end of the table board. The output shaft of the first motor is connected to a first screw rod that is rotatably connected to the table board. The first screw rod is threadedly connected to the supporting plate, and the guide rods pass through the supporting plate. A frame located below the table board is fixed at the bottom of the supporting plate, and a welding machine is fixed on the frame. In the present invention, when the first motor is started, the output shaft of the first motor drives the first screw rod to rotate. Under the limiting action of the guide rods, the first screw rod will drive the supporting plate to move. The supporting plate will push the two pipes towards the discharging end of the table board, and the pipes will roll on the table board. At the same time, the welding machine will also move along with the supporting plate. In this way, the welding machine will weld the rolling pipes, and the pipes can be conveniently discharged at the discharging end of the table board.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding equipment, and in particular to a laser device for welding pipes. Background Art

[0002] The current laser device is a modern mechanical device that uses a laser beam with a high energy density as a heat source. Due to the optical properties of the laser such as refraction and focusing, laser welding is very suitable for welding micro-parts and parts with very poor accessibility. The laser welding method also has the characteristics of low heat input, small welding deformation, and not being affected by the electromagnetic field.

[0003] In order to solve the problem of "the existing equipment is inconvenient for fixing pipes", a Chinese patent with the publication number CN117961333B discloses a laser device for welding pipes, which includes: a base and a starting mechanism. Two sliding seats are slidably connected to the top of the base, and a driving mechanism for driving the two sliding seats to approach and separate from each other is arranged at the bottom of the base; a rotating cylinder is rotatably installed inside the sliding seat, and a clamping mechanism capable of clamping round pipes, square pipes, and elliptical pipes is arranged inside the rotating cylinder. A rotating mechanism for driving the two rotating cylinders to rotate synchronously is arranged at the top of the base. The present invention can meet the clamping and fixing of elliptical pipes and square pipes, and can control the automatic docking and synchronous rotation of the pipes. Through the cooperation of the rotating wheel and the return spring, the two laser welding machines are attached to the inner and outer walls of different-shaped pipes for welding work, improving the applicability. When the pipes are misaligned during docking, the welding work is automatically stopped, ensuring the welding efficiency and welding quality while. Although the existing technical problems are solved, there are still the following problems:

[0004] In this technical solution, before welding, the two pipes need to be manually fixed into the corresponding rotating cylinders respectively, and the operation space is narrow. After welding, it is necessary to manually release the fixation and then carry out the pipes, which has the problems of cumbersome operation and low efficiency. Therefore, corresponding improvements are made to solve this problem. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, the present invention proposes a laser device for welding pipes.

[0006] A laser device for welding pipes proposed by the present invention includes a table board. An L-shaped supporting plate is arranged on the top of the table board. A baffle is arranged on the supporting plate. A first motor and two symmetrically distributed guide rods are fixed at the feeding end of the table board. The output shaft of the first motor is connected with a first screw rod rotatably connected to the table board. The first screw rod is in threaded connection with the supporting plate. The guide rods pass through the supporting plate. A frame located below the table board is fixed at the bottom of the supporting plate. A welding machine is fixed on the frame. Place the two pipes to be welded on the supporting plate and butt the two pipes together. The outer walls of the pipes will directly contact the table top of the table board. The baffle can prevent the pipes from rolling randomly. Then start the first motor. The output shaft of the first motor drives the first screw rod to rotate. Under the limiting action of the guide rods, the first screw rod will drive the supporting plate to move. The supporting plate will push the two pipes towards the discharging end of the table board. The pipes will roll on the table board. At the same time, the welding machine will also move along with the supporting plate. In this way, the welding machine will weld the rolling pipes, and the pipes can be discharged conveniently at the discharging end of the table board.

[0007] Preferably, a socket for inserting the baffle is formed on the supporting plate. A bracket is fixed at the discharging end of the table board. A pair of electric push rods are fixed on the bracket. A pair of ears capable of contacting the output shafts of the electric push rods are arranged at the top of the baffle. An opening for the baffle to enter is formed at the discharging end of the table board between the two electric push rods. When the baffle moves to the opening, the baffle will fall into the opening due to gravity, thus releasing the block on the pipes. Then the worker can directly take down the pipes. After the pipes are taken away, the output shafts of the electric push rods will push the ears to push the baffle upwards to the initial height. Then the first motor will drive the supporting plate to reset through the first screw rod. At this time, the supporting plate will take the baffle away together. Then the electric push rods will reset to the initial position.

[0008] Preferably, a buffer plate is connected to the bracket through a pair of first springs and is located below the opening. A pair of guide columns passing through the bracket are fixed at the bottom of the buffer plate. In this way, when the baffle falls down, it will fall on the buffer plate, and then the first springs will elastically expand and contract, so as to buffer the baffle.

[0009] Preferably, conveying platforms are fixed on both sides of the feeding end of the table board. Slide openings are formed at the bottoms of the conveying platforms. Push plates are slidably connected in the slide openings. A second motor is fixed at the bottom of the conveying platform. The output shaft of the second motor is connected with a second screw rod. The second screw rod is in threaded connection with the push plate. Place the two pipes on the corresponding conveying platforms respectively. Then start the second motor. The output shaft of the second motor drives the second screw rod to rotate. The second screw rod drives the push plate to move. The push plate will push the pipes towards the supporting plate. Then the two pipes will be butted together, thus eliminating the need for manual feeding.

[0010] Considering that the moving stroke of the welding machine is relatively long, the wires on the welding machine will also be relatively long. When the welding machine approaches the power supply direction, the wires will drag on the ground. To avoid the wires dragging on the ground all the time, preferably, a rotatable main shaft is provided at the bottom of the platen. A wire reel is fixed to the bottom end of the main shaft. Two wire slots for placing the wires of the welding machine are provided on the wire reel. The main shaft is connected with a rotation driving assembly. The wires are placed into the two wire slots, and the length of the wires is such that when the frame moves to the farthest distance, the wires do not drag on the ground. At this time, the wires are approximately in a straightened state. When the frame moves back, the rotation driving assembly will drive the main shaft and the wire reel to rotate, and the wire reel will bend the middle position of the wires, making the wires form a Z shape, thus avoiding the wires dragging on the ground.

[0011] Preferably, the rotation driving assembly includes a second pulley and two first pulleys. The second pulley is located between the two first pulleys. The second pulley and the two first pulleys are connected by a toothed belt. The second pulley is fixedly sleeved on the main shaft. The main shaft is rotatably connected to the platen. The first pulley is rotatably connected to the platen. A U-shaped clamping plate is fixed on the outer surface of the toothed belt. The clamping plate clamps on the frame. When the frame moves, the toothed belt is driven to move through the clamping plate, and the toothed belt will rotate between the two first pulleys. Then the toothed belt will drive the main shaft to rotate through the second pulley.

[0012] Preferably, the rotation driving assembly includes a swivel member connected to the top end of the main shaft. A reel is fixedly sleeved on the main shaft. A pulling rope is wound on the reel. The free end of the pulling rope is fixed on the frame. When the frame moves towards the discharge end of the platen, the reel is driven to rotate through the pulling rope, and the reel will synchronously drive the main shaft to rotate. On the contrary, when the frame moves back in place, the swivel member will drive the main shaft to rotate in the reverse direction, so that the reel winds up the pulling rope.

[0013] Preferably, the swivel member includes an upper cover, a lower cover and a coil spring. The top end of the upper cover is fixedly connected to the platen. The upper cover and the lower cover are rotatably connected. The coil spring is installed between the upper cover and the lower cover. The lower cover is fixedly connected to the main shaft. When the main shaft rotates, the lower cover will be driven to rotate synchronously. Then the lower cover will tighten the coil spring. In this way, when the frame moves back in place, the main shaft can be driven to rotate in the reverse direction by relying on the coil spring.

[0014] Compared with the prior art, the present invention provides a laser device for welding pipes, having the following beneficial effects:

[0015] 1. For a laser device for welding pipes, by providing a supporting plate, the output shaft of the first motor drives the first screw rod to rotate. Under the limiting action of the guide rod, the first screw rod will drive the supporting plate to move. The supporting plate will push the two pipes towards the discharge end of the platen. The pipes will roll on the platen. At the same time, the welding machine will also move together with the supporting plate. In this way, the welding machine will weld the rolling pipes, and the pipes can be discharged conveniently at the discharge end of the platen.

[0016] 2. A laser device for welding pipes, which is equipped with a movable baffle. When the baffle moves to the opening, it will fall into the opening due to gravity, thus removing the obstruction to the pipe. Then the worker can directly take the pipe down. After the pipe is taken away, the output shaft of the electric push rod will push the ear to push the baffle upward to the initial height, and then the motor will drive the support plate to reset through the screw rod. At this time, the support plate will take the baffle away together, and then the electric push rod will reset to the initial position.

[0017] 3. A laser device for welding pipes, which places the wire into two slots by setting a wire take-up rack. The length of the wire is sufficient to prevent the wire from dragging on the ground when the frame moves to the farthest distance. At this time, the wire is approximately in a straightened state. When the frame moves back, the main shaft and the wire take-up rack are driven to rotate through the driving assembly, and the wire take-up rack bends the middle position of the wire to form a Z shape, thereby preventing the wire from dragging on the ground.

[0018] 4. A laser device for welding pipes, which is provided with a toothed belt. When the frame moves, the toothed belt is driven to move through the clamping plate, and the toothed belt will rotate between two pulleys, and then the toothed belt will drive the main shaft to rotate through the pulley two.

[0019] 5. A laser device for welding pipes. By setting a reel, when the frame moves toward the discharge end of the table, the reel will be driven to rotate through the pull rope, and the reel will synchronously drive the main shaft to rotate. Conversely, when the frame resets and moves, the rotating part will drive the main shaft to rotate in the opposite direction, so that the reel will reel up the pull rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a laser device for welding pipelines proposed by the present invention;

[0021] Figure 2 A schematic diagram of a support plate structure of a laser device for welding pipelines proposed by the present invention;

[0022] Figure 3 A schematic diagram of the installation structure of a welding machine of a laser device for welding pipelines proposed by the present invention;

[0023] Figure 4 A schematic diagram of the structure of a laser device for welding a pipe after a baffle enters an opening according to the present invention;

[0024] Figure 5 A schematic diagram of the structure of a conveyor platform of a laser device for welding pipelines proposed by the present invention;

[0025] Figure 6 A schematic diagram of the installation structure of a positioning bar of a laser device for welding pipelines proposed by the present invention;

[0026] Figure 7 Schematic diagram of the tooth belt installation structure of a laser device for welding pipes proposed by the present invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged structure diagram at position B of the present invention;

[0028] Figure 9 For the present invention Figure 7 Enlarged structure diagram at position C of the present invention;

[0029] Figure 10 Schematic diagram of the reel installation structure of a laser device for welding pipes proposed by the present invention;

[0030] Figure 11 Schematic diagram of the first - angle structure of the rotary part of a laser device for welding pipes proposed by the present invention after disassembly;

[0031] Figure 12 Schematic diagram of the second - angle structure of the rotary part of a laser device for welding pipes proposed by the present invention after disassembly.

[0032] In the figure: 1, platen; 2, support plate; 3, baffle; 4, frame; 5, welding machine; 6, motor 1; 7, screw rod 1; 8, guide rod; 9, socket; 10, bracket; 11, electric push rod; 12, buffer plate; 13, spring 1; 14, guide post; 15, ear; 16, conveying table; 17, sliding port; 18, push plate; 19, motor 2; 20, screw rod 2; 21, rotary part; 22, reel; 23, pulling rope; 24, main shaft; 25, wire take - up frame; 26, card slot; 27, pulley 1; 28, tooth belt; 29, pulley 2; 30, clamping plate; 31, opening; 2101, upper cover; 2102, lower cover; 2103, coil spring. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0035] Refer to Figures 1 - 12A laser device for welding pipes includes a table 1, an L-shaped support plate 2 is arranged on the top of the table 1, a baffle 3 is arranged on the support plate 2, a motor 6 and two symmetrically distributed guide rods 8 are fixed to the feeding end of the table 1, the output shaft of the motor 6 is connected to a screw 7 which is rotatably connected to the table 1, the screw 7 is threadedly connected to the support plate 2, the guide rod 8 passes through the support plate 2, a frame 4 located below the table 1 is fixed to the bottom of the support plate 2, a welding machine 5 is fixed on the frame 4, two pipes to be welded are placed on the support plate 2, and the two pipes are butt-jointed together , the outer wall of the pipe will directly contact the table surface of the table 1, and the baffle 3 can prevent the pipe from rolling at will, and then start the motor 6, the output shaft of the motor 6 drives the screw 7 to rotate, and under the limiting action of the guide rod 8, the screw 7 will drive the support plate 2 to move, and the support plate 2 will push the two pipes to the discharge end of the table 1, and the pipe will roll on the table 1. At the same time, the welding machine 5 will also move with the support plate 2, so that the welding machine 5 will weld the rolling pipe, and the pipe can be conveniently discharged at the discharge end of the table 1.

[0036] Furthermore, a socket 9 for inserting the baffle 3 is provided on the support plate 2, a bracket 10 is fixed at the discharge end of the table plate 1, a pair of electric push rods 11 are fixed on the bracket 10, a pair of ears 15 that can contact the output shaft of the electric push rod 11 are provided on the top of the baffle 3, and an opening 31 for the baffle 3 to enter is provided between the two electric push rods 11 at the discharge end of the table plate 1. When the baffle 3 moves to the opening 31, the baffle 3 will fall into the opening 31 due to the action of gravity, thereby removing the obstruction to the pipeline, and then the worker can directly remove the pipeline. After the pipeline is removed, the output shaft of the electric push rod 11 will push the ear 15 to push the baffle 3 upward to the initial height, and then the motor 6 will drive the support plate 2 to reset through the screw 7. At this time, the support plate 2 will take the baffle 3 away, and then the electric push rod 11 will reset to the initial position.

[0037] Furthermore, the bracket 10 is connected to a buffer plate 12 located below the opening 31 through a pair of springs 13, and a pair of guide pillars 14 passing through the bracket 10 are fixed to the bottom of the buffer plate 12, so that when the baffle 3 falls downward, it will fall on the buffer plate 12, and then the spring 13 will elastically expand and contract, thereby buffering the baffle 3.

[0038] Further, conveying platforms 16 are fixed on both sides of the feeding end of the platen 1. A sliding opening 17 is formed at the bottom of the conveying platform 16. A push plate 18 is slidably connected in the sliding opening 17. A second motor 19 is fixed at the bottom of the conveying platform 16. The output shaft of the second motor 19 is connected to a second screw 20. The second screw 20 is threadedly connected to the push plate 18. Place the two pipes onto the corresponding conveying platforms 16 respectively, and then start the second motor 19. The output shaft of the second motor 19 drives the second screw 20 to rotate. The second screw 20 drives the push plate 18 to move. The push plate 18 will push the pipes towards the pallet 2. Then the two pipes will be butted together, thus eliminating the need for manual feeding.

[0039] Considering that the moving stroke of the welding machine 5 is relatively long, the wires on the welding machine 5 will also be relatively long. When the welding machine 5 moves towards the power supply direction, the wires will drag on the ground. To avoid the wires dragging on the ground all the time, further, a rotatable main shaft 24 is provided at the bottom of the platen 1. A wire reel 25 is fixed at the bottom end of the main shaft 24. Two card slots 26 for placing the wires of the welding machine 5 are formed on the wire reel 25. The main shaft 24 is connected to a rotation driving assembly. Place the wires into the two card slots 26. The length of the wires is such that when the frame 4 moves to the farthest distance, the wires do not drag on the ground. At this time, the wires are approximately in a straightened state. When the frame 4 moves back, the rotation driving assembly will drive the main shaft 24 and the wire reel 25 to rotate. The wire reel 25 will bend the middle position of the wires, making the wires form a Z shape, thus avoiding the wires dragging on the ground.

[0040] In Embodiment 1, the rotation driving assembly includes a second pulley 29 and two first pulleys 27. The second pulley 29 is located between the two first pulleys 27. The second pulley 29 and the two first pulleys 27 are connected by a toothed belt 28. The second pulley 29 is fixedly sleeved on the main shaft 24. The main shaft 24 is rotatably connected to the platen 1. The first pulley 27 is rotatably connected to the platen 1. A U-shaped clamping plate 30 is fixed on the outer surface of the toothed belt 28. The clamping plate 30 clamps on the frame 4. When the frame 4 moves, the toothed belt 28 is driven to move through the clamping plate 30. The toothed belt 28 will rotate between the two first pulleys 27. Then the toothed belt 28 will drive the main shaft 24 to rotate through the second pulley 29.

[0041] In Embodiment 2, the rotation driving assembly includes a swivel member 21 connected to the top end of the main shaft 24. A reel 22 is fixedly sleeved on the main shaft 24. A pulling rope 23 is wound around the reel 22. The free end of the pulling rope 23 is fixed on the frame 4. When the frame 4 moves towards the discharging end of the platen 1, the reel 22 will be driven to rotate through the pulling rope 23. The reel 22 will synchronously drive the main shaft 24 to rotate. On the contrary, when the frame 4 moves back for reset, the swivel member 21 will drive the main shaft 24 to rotate in the reverse direction, so that the reel 22 winds up the pulling rope 23.

[0042] Among them, the rotating member 21 includes an upper cover 2101, a lower cover 2102 and a spiral spring 2103. The top end of the upper cover 2101 is fixedly connected to the platen 1. The upper cover 2101 and the lower cover 2102 are rotatably connected. The spiral spring 2103 is installed between the upper cover 2101 and the lower cover 2102. The lower cover 2102 is fixedly connected to the main shaft 24. When the main shaft 24 rotates, it will drive the lower cover 2102 to rotate synchronously. Then the lower cover 2102 will tighten the spiral spring 2103. In this way, when the frame 4 moves back to its original position, the spiral spring 2103 can be relied on to drive the main shaft 24 to rotate in the reverse direction.

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A laser device for welding pipes, comprising a platen (1), characterized in that: An L-shaped support plate (2) is arranged on the top of the table (1), a baffle plate (3) is arranged on the support plate (2), a motor (6) and two symmetrically distributed guide rods (8) are fixed at the feed end of the table (1), the output shaft of the motor (6) is connected to a screw (7) which is rotatably connected to the table (1), the screw (7) is threadedly connected to the support plate (2), the guide rod (8) passes through the support plate (2), a frame (4) located below the table (1) is fixed at the bottom of the support plate (2), and a welding machine (5) is fixed on the frame (4); The support plate (2) is provided with a socket (9) for inserting the baffle plate (3); a bracket (10) is fixed to the discharge end of the table plate (1); a pair of electric push rods (11) are fixed to the bracket (10); a pair of ears (15) capable of contacting the output shafts of the electric push rods (11) are provided on the top of the baffle plate (3); and an opening (31) is provided at the discharge end of the table plate (1) and is located between the two electric push rods (11) for the baffle plate (3) to enter. A rotatable main shaft (24) is disposed at the bottom of the table (1), a wire take-up frame (25) is fixed to the bottom end of the main shaft (24), two slots (26) for inserting wires of the welding machine (5) are provided on the wire take-up frame (25), and a driving component is connected to the main shaft (24); The driving assembly comprises a second pulley (29) and two first pulleys (27), the second pulley (29) being located between the two first pulleys (27), the second pulley (29) and the two first pulleys (27) being connected via a toothed belt (28), the second pulley (29) being fixedly sleeved on the main shaft (24), the main shaft (24) being rotationally connected to the table (1), the first pulley (27) being rotationally connected to the table (1), a U-shaped clamping plate (30) being fixed on the outer surface of the toothed belt (28), and the clamping plate (30) being clamped on the frame (4); The driving assembly comprises a rotating member (21) connected to the top end of a main shaft (24); a reel (22) is fixedly sleeved on the main shaft (24); a pull rope (23) is wound around the reel (22); a free end of the pull rope (23) is fixed to a frame (4); when the frame (4) is reset, the rotating member (21) drives the main shaft (24) to rotate in the opposite direction, so that the reel (22) reels up the pull rope (23).

2. The laser equipment for welding pipelines according to claim 1, characterized in that: The bracket (10) is connected to a buffer plate (12) located below the opening (31) via a pair of springs (13), and a pair of guide posts (14) passing through the bracket (10) are fixed to the bottom of the buffer plate (12).

3. The laser equipment for welding pipelines according to claim 1, characterized in that: A conveying platform (16) is fixed on both sides of the feeding end of the table (1), a sliding opening (17) is provided at the bottom of the conveying platform (16), a push plate (18) is slidably connected in the sliding opening (17), a second motor (19) is fixed at the bottom of the conveying platform (16), a second screw (20) is connected to the output shaft of the second motor (19), and the second screw (20) is threadedly connected to the push plate (18).

4. The laser equipment for welding pipelines according to claim 1, characterized in that: The rotating member (21) comprises an upper cover (2101), a lower cover (2102) and a coil spring (2103); the top end of the upper cover (2101) is fixedly connected to the table plate (1); the upper cover (2101) and the lower cover (2102) are rotationally connected; the coil spring (2103) is installed between the upper cover (2101) and the lower cover (2102); and the lower cover (2102) is fixedly connected to the main shaft (24).

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