A laser welding device suitable for pipeline processing

Abstract

The present invention belongs to the technical field of pipeline welding, and discloses a laser welding device suitable for pipeline processing, including two lifting components, a fixed component on the outside of the two lifting components, a rotating component on the outside of the two fixed components, a moving component on the inside of the two lifting components, a welding component in the middle of the two moving components, and a blowing component on the inside of the welding component. When the rubber chain is in a closed state, air cannot be supplied. When the sliding block gradually moves to the top of the crescent block, the opening and closing degree of the rubber chain gradually increases, forming an arc-shaped ventilation area, the air volume changes from small to large, and the wind speed changes from fast to slow, forming a wrapped inert gas air duct at the outer edge of the welded pipeline, solving the problem that the traditional protective gas generating device cannot fit the pipeline with high arc rate and rotating and can control the air volume, thereby causing bubbles to form during welding and poor welding effect.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline welding, and in particular relates to laser welding equipment suitable for pipeline processing. Background Art

[0002] Laser welding is a welding process that uses a laser beam as energy to locally heat and melt metal or non-metal materials. In addition to flat surface welding and curved surface welding, pipeline welding is also often used in production and life.

[0003] During the laser welding process, the high power density of the laser beam causes the material to melt. The solder and the metal to be welded react with components in the air in a molten state. Part of the material is vaporized, forming small steam holes in the weld layer, which can damage the welding quality. Therefore, inert gas is used for blowing during the production process to squeeze out the easily vaporized components in the air. This type of gas is called shielding gas. However, since pipeline welding is a continuous, regular circular curved surface welding, and the two sections of the welded pipeline need to be continuously rotated during the welding process, the traditional shielding gas generating device cannot fit the rotating pipeline with a high arc rate and can control the air volume, resulting in the formation of bubbles during the welding process and poor welding effect. Summary of the invention

[0004] The object of the present invention is to provide a laser welding device suitable for pipeline processing to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a laser welding device suitable for pipeline processing, comprising two lifting assemblies, the outer sides of the two lifting assemblies are fixedly installed with fixed assemblies, and also comprising a linkage welding mechanism, which comprises two rotating assemblies, the two rotating assemblies are fixedly installed on the outer sides of the two lifting assemblies, two moving assemblies are fixedly installed at the middle positions of the two rotating assemblies, and the middle positions of the two moving assemblies are fixedly installed with welding assemblies;

[0006] A blowing assembly, wherein the blowing assembly is fixedly installed on the inner side of the welding assembly, the blowing assembly comprises a crescent block, an arc groove is provided on the left side of the crescent block, two rubber chains are fixedly connected to the middle position of the crescent block, sliding blocks are movably sleeved on the outer edges of the two rubber chains, a U-shaped rod is fixedly connected to the top of the sliding block, the other end of the U-shaped rod is movably clamped in the arc groove, and an air inlet is provided at the bottom of the crescent block.

[0007] Preferably, the lifting assembly includes a base, a frame is fixedly installed on the top of the base, two movable blocks are movably installed inside the frame, slots are provided on the upper and lower parts of the two movable blocks, connecting blocks are fixedly connected on the left and right sides of the two movable blocks, screw rods are movably sleeved inside the two connecting blocks on the left, contraction springs are fixedly connected inside the two connecting blocks on the right, metal sheets are elastically connected on the right sides of the two contraction springs, first tracks are movably sleeved on the outer edges of the two connecting blocks on the right, and a power supply is fixedly connected on the right side of the first track.

[0008] Preferably, the screw rod, the first track and the power supply are all fixedly connected to the base, and the two contraction springs and the two metal sheets are movably clamped in the first track.

[0009] Preferably, the fixing assembly includes a two-way telescopic rod, which is fixedly installed on the top of the frame, and the two telescopic ends of the two-way telescopic rod are fixedly connected to a round rod, and the outer edges of the two round rods are movably sleeved with two groups of L-shaped blocks, and the middle positions of the four groups of L-shaped blocks are fixedly connected with clamping blocks, and the insides of the four groups of clamping blocks are movably clamped with ball bearings.

[0010] Preferably, the rotating assembly includes a weight-bearing seat, which is fixedly installed on the outside of the base, and a rotating rod is fixedly installed on the top of the weight-bearing seat. The outer edge of the rotating rod is fixedly connected to an I-block, and two first hydraulic rods are fixedly connected to the right side of the I-block, and the telescopic ends of the two first hydraulic rods are fixedly connected to motors, and the output shafts of the two motors are connected to conical blocks.

[0011] Preferably, the moving component includes a second track, which is fixedly installed in the middle position of the two bases, and the second track is movably connected with a longitudinal column inside, and two connecting plate groups are fixedly connected to the left side of the longitudinal column, and a circular shaft is installed through the middle position of the two connecting plate groups, and the left sides of the two connecting plate groups are fixedly connected with a clamp.

[0012] Preferably, the welding assembly includes a bracket, which is fixedly installed in the middle position of the two second rails, and two groups of cross bars are fixedly connected to the left inner wall of the bracket, and laser welding heads are movably hinged on the right sides of the two groups of cross bars, and replaceable welding heads are movably installed on the bottoms of the two laser welding heads, and second hydraulic rods are fixedly installed on the bottoms of the two groups of cross bars, and the telescopic ends of the two second hydraulic rods are connected to crescent blocks.

[0013] The beneficial effects of the present invention are as follows:

[0014] 1. The present invention is equipped with a newly designed air supply component. When the sliding block is at the bottom of the crescent block, the rubber chain is in a closed state and the inert gas cannot supply air. When the sliding block gradually moves to the top of the crescent block, the opening and closing degree of the rubber chain gradually increases, forming an arc-shaped ventilation area. At this time, the air volume also changes from small to large, and the wind speed changes from fast to slow, forming a wrapped inert gas air duct at the outer edge of the welded pipe, solving the problem that the traditional protective gas generating device cannot fit the rotating pipe with a high arc rate and can control the air volume, thereby causing bubbles to form during welding and poor welding effect.

[0015] 2. The present invention is equipped with a fixing device having an electromagnetic structure. The movable block moves upward on the screw rod through the connecting block on the left side and stops when it reaches the required height for welding. The first track is energized by the power supply to form an electromagnet, so that the contraction spring on the right side will be attracted in the first track. After the contraction spring is increased in distance, the first track completes magnetic adsorption of the metal sheet, thereby completing the fixation of the entire fixing assembly and enhancing the device's function of firmly clamping the pipeline.

[0016] 3. The present invention automatically clamps the nearby mobile component, moves the entire device to the position closest to the fixed component through the second track, and then drives the clamping hand to approach the pipe for clamping through the linkage work of the connecting plate group and the circular shaft. After the clamping hand clamps, the middle positions of the two sections of the pipes to be welded can be brought close together through the second track, which can improve the alignment accuracy of the two pipes and thus improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the welding assembly of the present invention;

[0019] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 4 It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0021] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B in the middle;

[0022] Figure 6 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the rotating assembly of the present invention;

[0024] Figure 8This is a schematic diagram of the structure of the mobile assembly of the present invention;

[0025] Fig. 9 It is a schematic diagram of the structure of the blowing assembly of the present invention.

[0026] In the figure: 1. lifting assembly; 2. fixing assembly; 3. rotating assembly; 4. moving assembly; 5. welding assembly; 6. blowing assembly; 11. base; 12. frame; 13. movable block; 14. slot; 15. connecting block; 16. screw rod; 17. contraction spring; 18. metal sheet; 19. first track; 110. power supply; 21. two-way telescopic rod; 22. round rod; 23. L-shaped block; 24. clamping block; 25. ball bearing; 31. load-bearing Seat; 32, rotating rod; 33, I-block; 34, first hydraulic rod; 35, motor; 36, conical block; 41, second track; 42, longitudinal column; 43, connecting plate group; 44, round shaft; 45, clamp; 51, bracket; 52, cross bar; 53, laser welding head; 54, replaceable welding head; 55, second hydraulic rod; 61, crescent block; 62, arc groove; 63, rubber chain; 64, sliding block; 65, U-shaped rod; 66, air inlet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 9 As shown, an embodiment of the present invention provides a laser welding device suitable for pipeline processing, including two lifting assemblies 1, each of which is fixedly installed with a fixed assembly 2 on the outside of the two lifting assemblies 1, and also includes a linkage welding mechanism, which includes two rotating assemblies 3, the two rotating assemblies 3 are fixedly installed on the outside of the two lifting assemblies 1, and two moving assemblies 4 are fixedly installed in the middle of the two rotating assemblies 3, and a welding assembly 5 is fixedly installed in the middle of the two moving assemblies 4;

[0029] The blowing assembly 6 is fixedly installed on the inner side of the welding assembly 5. The blowing assembly 6 includes a crescent block 61. An arc groove 62 is provided on the left side of the crescent block 61. Two rubber chains 63 are fixedly connected to the middle position of the crescent block 61. The outer edges of the two rubber chains 63 are movably sleeved with sliding blocks 64. The two rubber chains 63 are arranged in a staggered manner and can be opened and closed under the movement of the sliding blocks 64. A U-shaped rod 65 is fixedly connected to the top of the sliding block 64. The other end of the U-shaped rod 65 is movably clamped in the arc groove 62. An air inlet 66 is provided at the bottom of the crescent block 61. The two rubber chains 63 cannot completely block the air supply when they are engaged and closed, but the air volume and wind speed are very small at this time, and will not have a significant impact on the overall air flow in the welding area.

[0030] The crescent block 61 is in the shape of a crescent, presenting an arc-shaped cavity that is wide at the top and narrow at the bottom. When the inert gas enters the cavity of the crescent block 61 through the air inlet 66, it will be pressurized when passing through the narrow arc-shaped channel and continue to move upward in the crescent block 61. By controlling the position of the U-shaped rod 65 in the arc-shaped groove 62, the sliding block 64 is driven to pull the rubber chain 63 to complete the opening and closing. When the sliding block 64 is at the bottom of the crescent block 61, the rubber chain 63 is in a closed state, and the inert gas cannot be supplied. When the sliding block 64 gradually moves to the top of the crescent block 61, the opening and closing degree of the rubber chain 63 gradually increases, forming an arc-shaped ventilation area, and at this time the air volume also changes from small to large, and the wind speed changes from rapid to slow, forming a wrapped inert gas air duct at the outer edge of the welded pipe, solving the problem that the traditional protective gas generating device cannot fit the rotating pipe with a high arc rate and can control the air volume, thereby causing bubbles to form during welding and poor welding effect.

[0031] The lifting assembly 1 includes a base 11, a frame 12 is fixedly installed on the top of the base 11, two movable blocks 13 are movably installed inside the frame 12, slots 14 are provided on the upper and lower parts of the two movable blocks 13, connecting blocks 15 are fixedly connected on the left and right sides of the two movable blocks 13, screw rods 16 are movably sleeved inside the two connecting blocks 15 on the left, contraction springs 17 are fixedly connected inside the two connecting blocks 15 on the right, metal sheets 18 are elastically connected on the right sides of the two contraction springs 17, first rails 19 are movably sleeved on the outer edges of the two connecting blocks 15 on the right, the two connecting blocks 15 on the right have sliding damping in the first rail 19, and a power supply 110 is fixedly connected on the right side of the first rail 19; after the power supply 110 energizes the first rail 19, an electromagnet can be formed inside the first rail 19, the screw rod 16, the first rail 19 and the power supply 110 are all fixedly connected to the base 11, and the two contraction springs 17 and the two metal sheets 18 are movably clamped in the first rail 19;

[0032] The movable block 13 moves upward on the screw rod 16 through the left connecting block 15 to the required height for welding and stops. The first track 19 is energized through the power supply 110 to form an electromagnet, so that the contraction spring 17 on the right side will be attracted in the first track 19. After the contraction spring 17 increases the distance, the first track 19 completes the magnetic adsorption of the metal sheet 18, thereby completing the fixation of the entire fixing assembly 2;

[0033] The fixing assembly 2 includes a bidirectional telescopic rod 21, which is fixedly mounted on the top of the frame 12. The two telescopic ends of the bidirectional telescopic rod 21 are fixedly connected to round rods 22. The outer edges of the two round rods 22 are movably sleeved with two groups of L-shaped blocks 23. The middle positions of the four groups of L-shaped blocks 23 are fixedly connected with clamping blocks 24. The insides of the four groups of clamping blocks 24 are movably clamped with balls 25.

[0034] The two-way telescopic rod 21 shortens the stroke, and drives the four groups of L-shaped blocks 23 to move to the middle position of the movable block 13 through the two round rods 22. The slot 14 provides guidance and limiting functions. The outer surface of the pipe clamped by the clamping block 24 contacts the ball 25, and the ball 25 allows the pipe to move left and right in the horizontal direction of the clamping block 24.

[0035] The rotating assembly 3 includes a load-bearing seat 31, which is fixedly mounted on the outside of the base 11, and a rotating rod 32 is fixedly mounted on the top of the load-bearing seat 31. An I-shaped block 33 is fixedly connected to the outer edge of the rotating rod 32, and two first hydraulic rods 34 are fixedly connected to the right side of the I-shaped block 33. The telescopic ends of the two first hydraulic rods 34 are fixedly connected to motors 35, and the output shafts of the two motors 35 are connected to cone blocks 36.

[0036] The rotating rod 32 is rotated to drive the I-shaped block 33 parallel to the fixed component 2, and then the first hydraulic rod 34 increases the stroke, and the conical block 36 is clamped on both ends of the pipe. Then the motor 35 is started to slowly rotate the pipe, and the welding component 5 is cooperated to complete the rotation welding of the pipe;

[0037] The moving assembly 4 includes a second track 41, which is fixedly installed in the middle of the two bases 11. A longitudinal column 42 is movably connected inside the second track 41. Two connecting plate groups 43 are fixedly connected to the left side of the longitudinal column 42. A round shaft 44 is installed through the middle of the two connecting plate groups 43. A clamping hand 45 is fixedly connected to the left side of the two connecting plate groups 43.

[0038] After the whole equipment is moved to the position closest to the fixed component 2 through the second track 41, the connecting plate group 43 and the circular shaft 44 work in conjunction to drive the clamping hand 45 to approach the pipe for clamping. After the clamping hand 45 clamps, the middle positions of the two sections of the pipe to be welded can be brought close together through the second track 41 to prepare for the next step of welding.

[0039] The welding assembly 5 includes a bracket 51, which is fixedly installed at the middle position of the two second rails 41. Two groups of cross bars 52 are fixedly connected to the left inner wall of the bracket 51. The right sides of the two groups of cross bars 52 are movably hinged with laser welding heads 53. The bottoms of the two laser welding heads 53 are movably installed with replaceable welding heads 54. The bottoms of the two groups of cross bars 52 are fixedly installed with second hydraulic rods 55. The telescopic ends of the two second hydraulic rods 55 are connected with crescent blocks 61.

[0040] The laser welding head 53 is driven by the cross bar 52 to rotate to a suitable angle to weld the pipeline. The replaceable welding head 54 is a quickly replaceable structure and can be quickly replaced when the welding head fails.

[0041] Working principle:

[0042] When using the present invention for pipeline laser welding, firstly, two sections of pipelines to be welded are placed in the movable block 13 of the fixed component 2, and then the bidirectional telescopic rod 21 is started, the bidirectional telescopic rod 21 shortens the stroke, and drives the four groups of L-shaped blocks 23 to move to the middle position of the movable block 13 through the two round rods 22, and the slots 14 provide guidance and limit functions, and the outer surface of the pipeline clamped by the clamping block 24 contacts the ball 25, and the ball 25 allows the pipeline to move left and right in the horizontal direction of the clamping block 24;

[0043] At this time, the lifting assembly 1 is started again, and the movable block 13 moves upward on the screw rod 16 through the left connecting block 15 to the required welding height and stops, and the first track 19 is energized through the power supply 110 to form an electromagnet, so that the contraction spring 17 on the right side will be attracted in the first track 19. After the contraction spring 17 increases the distance, the first track 19 completes the magnetic adsorption of the metal sheet 18, thereby completing the fixation of the entire fixing assembly 2;

[0044] Then start the moving component 4, and move the whole device to the position closest to the fixed component 2 through the second track 41, and then drive the clamping hand 45 to approach the pipe and clamp it through the linkage work of the connecting piece group 43 and the round shaft 44. After the clamping hand 45 clamps, the middle positions of the two sections of the pipe to be welded are brought close together through the second track 41;

[0045] When the two pipes are close to each other, the rotating assembly 3 is started, and the rotating rod 32 is rotated to drive the I-shaped block 33 to be parallel to the fixed assembly 2, and then the first hydraulic rod 34 is increased in stroke, and the conical block 36 is clamped on both ends of the pipe. Then the motor 35 is started to slowly rotate the pipe, and then the welding assembly 5 is started, and the laser welding head 53 is driven by the cross bar 52 to rotate to a suitable angle to weld the pipe. The replaceable welding head 54 is a structure that can be quickly replaced, and can be quickly replaced when the welding head fails. While welding, the blowing assembly 6 is moved close to the welding position through the second hydraulic rod 55;

[0046] The crescent block 61 is in the shape of a crescent, presenting an arc-shaped cavity that is wide at the top and narrow at the bottom. When the inert gas enters the cavity of the crescent block 61 through the air inlet 66, it will be pressurized when passing through the narrow arc-shaped channel and continue to move upward in the crescent block 61. By controlling the position of the U-shaped rod 65 in the arc-shaped groove 62, the sliding block 64 is driven to pull the rubber chain 63 to complete the opening and closing. When the sliding block 64 is at the bottom of the crescent block 61, the rubber chain 63 is in a closed state, and the inert gas cannot be supplied. When the sliding block 64 gradually moves to the top of the crescent block 61, the opening and closing degree of the rubber chain 63 gradually increases, forming an arc-shaped ventilation area, and at this time the air volume also changes from small to large, and the wind speed changes from rapid to slow, forming a wrapped inert gas air duct at the outer edge of the welded pipe, solving the problem that the traditional protective gas generating device cannot fit the rotating pipe with a high arc rate and can control the air volume, thereby causing bubbles to form during welding and poor welding effect.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device suitable for pipeline processing, comprising two lifting assemblies (1), characterized in that: The outer sides of the two lifting assemblies (1) are fixedly mounted with fixing assemblies (2), and further comprising: A linkage welding mechanism, comprising two rotating assemblies (3), wherein the two rotating assemblies (3) are fixedly mounted on the outsides of the two lifting assemblies (1), two moving assemblies (4) are fixedly mounted in the middle of the two rotating assemblies (3), and a welding assembly (5) is fixedly mounted in the middle of the two moving assemblies (4); A blowing assembly (6), wherein the blowing assembly (6) is fixedly mounted on the inner side of the welding assembly (5), and comprises a crescent block (61), wherein an arc groove (62) is provided on the left side of the crescent block (61), wherein two rubber chains (63) are fixedly connected to the middle position of the crescent block (61), wherein the outer edges of the two rubber chains (63) are movably sleeved with sliding blocks (64), wherein the top of the sliding block (64) is fixedly connected with a U-shaped rod (65), wherein the other end of the U-shaped rod (65) is movably clamped in the arc groove (62), and an air inlet (66) is provided at the bottom of the crescent block (61).

2. The laser welding equipment suitable for pipeline processing according to claim 1 is characterized in that: The lifting assembly (1) comprises a base (11), a frame (12) is fixedly mounted on the top of the base (11), two movable blocks (13) are movably mounted inside the frame (12), slots (14) are provided on the upper and lower sides of the two movable blocks (13), connecting blocks (15) are fixedly connected on the left and right sides of the two movable blocks (13), a screw rod (16) is movably sleeved inside the two connecting blocks (15) on the left, a contraction spring (17) is fixedly connected inside the two connecting blocks (15) on the right, the right sides of the two contraction springs (17) are elastically connected to metal sheets (18), the outer edges of the two connecting blocks (15) on the right are movably sleeved with a first track (19), and the right side of the first track (19) is fixedly connected to a power supply (110).

3. The laser welding equipment suitable for pipeline processing according to claim 2 is characterized in that: The screw rod (16), the first track (19) and the power supply (110) are all fixedly connected to the base (11), and the two contraction springs (17) and the two metal sheets (18) are all movably clamped in the first track (19).

4. The laser welding equipment suitable for pipeline processing according to claim 3 is characterized in that: The fixing assembly (2) comprises a bidirectional telescopic rod (21), the bidirectional telescopic rod (21) being fixedly mounted on the top of the frame (12), the two telescopic ends of the bidirectional telescopic rod (21) being fixedly connected to round rods (22), the outer edges of the two round rods (22) being movably sleeved with two groups of L-shaped blocks (23), the middle positions of the four groups of L-shaped blocks (23) being fixedly connected to clamping blocks (24), and the interiors of the four groups of clamping blocks (24) being movably clamped with balls (25).

5. The laser welding equipment suitable for pipeline processing according to claim 4 is characterized in that: The rotating assembly (3) comprises a load-bearing seat (31), wherein the load-bearing seat (31) is fixedly mounted on the outside of the base (11), a rotating rod (32) is fixedly mounted on the top of the load-bearing seat (31), an I-shaped block (33) is fixedly connected to the outer edge of the rotating rod (32), two first hydraulic rods (34) are fixedly connected to the right side of the I-shaped block (33), the telescopic ends of the two first hydraulic rods (34) are fixedly connected to motors (35), and the output shafts of the two motors (35) are connected to conical blocks (36).

6. The laser welding equipment suitable for pipeline processing according to claim 5, characterized in that: The moving assembly (4) comprises a second track (41), the second track (41) being fixedly mounted at the middle position of the two bases (11), the second track (41) being internally movably connected with a longitudinal column (42), the left side of the longitudinal column (42) being fixedly connected with two connecting plate groups (43), the middle positions of the two connecting plate groups (43) being penetrated by a circular shaft (44), and the left sides of the two connecting plate groups (43) being fixedly connected with a gripper (45).

7. The laser welding equipment suitable for pipeline processing according to claim 6 is characterized in that: The welding assembly (5) comprises a bracket (51), the bracket (51) is fixedly mounted at the middle position of the two second rails (41), the left inner wall of the bracket (51) is fixedly connected with two groups of cross bars (52), the right sides of the two groups of cross bars (52) are movably hinged with laser welding heads (53), the bottoms of the two laser welding heads (53) are movably mounted with replaceable welding heads (54), the bottoms of the two groups of cross bars (52) are fixedly mounted with second hydraulic rods (55), and the telescopic ends of the two second hydraulic rods (55) are connected with crescent blocks (61).

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