Automatic circular pipe welding equipment

Abstract

The utility model provides automatic welding equipment for a circular tube, which relates to the technical field of circular tube processing equipment and comprises a welding table, a circular tube main body and a laser welder, the laser welder is arranged at the top of the welding table, and a V-shaped clamping base and a V-shaped positioning base are vertically clamped at two ends of the surface of the circular tube main body respectively. An angle adjusting motor is connected to one side of the V-shaped clamping base, mounting frames are symmetrically arranged on the two sides of the bottom face of the V-shaped clamping base, connecting frames are symmetrically arranged on the two sides of the top face of the V-shaped positioning base, press-fit air cylinders are vertically arranged on the surfaces of the mounting frames in a bolted mode, and the movable ends of the press-fit air cylinders are connected with the surfaces of the connecting frames. According to the circular pipe body welding device, the adaptability of clamping of the circular pipe body is enriched, stable clamping force is provided through the pressing air cylinder, shaking and deviation are prevented, the welding function of the device is greatly expanded, the application range of the device is greatly expanded through angle adjustment and multi-angle and multi-position welding adaptation during welding of the circular pipe body, and the universality and flexibility of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe machining equipment technical field especially relates to a pipe automatic welding equipment. BACKGROUND

[0002] According to the circular pipe automatic welding equipment of Chinese open number CN111215827A, including bottom structure, conveying structure, cutting structure, welding structure, bottom forming structure, top forming structure, bottom structure fixed installation on ground, is the base of whole, conveying structure fixed installation is on bottom structure, plays the function of conveying raw material, cutting structure fixed installation is on bottom structure, plays the function of cutting raw material, welding structure fixed installation is on bottom structure, plays the function of welding, bottom forming structure fixed installation is on bottom structure, plays the function of forming, top forming structure fixed installation is on bottom structure, plays the function of forming.

[0003] The above patent file and prior art have the following technical problems:

[0004] 1. In the existing pipe welding technology, the clamping device of some equipment may have poor stability, for example, some simple arc-shaped clamping structures have limited adaptability to different sizes of pipes. When the size of the pipe changes, it is easy to cause the pipe to be clamped too tightly or too tightly, which may damage the surface of the pipe, and thus cause the pipe to shift and shake during the welding process, affecting the accuracy of the welding position, and the quality of the weld is reduced. And the traditional welding equipment often lacks effective gas protection and heat protection measures when welding pipes. In the welding process, the welding area is easy to react with oxygen and other gases in the air, resulting in oxidation, porosity and other welding defects, and the heat generated during welding may cause the pipe to deform, affecting the quality and size accuracy of the pipe.

[0005] 2. The previous pipe welding equipment may be designed for a specific size of pipe. When different sizes of pipes need to be welded, different clamping tools may need to be replaced, which not only increases the production cost, but also leads to low production efficiency. And some existing pipe welding equipment is not flexible in adjusting the welding angle, and may only be able to perform simple plane welding or fixed-angle welding, which cannot meet the requirements of complex welding processes such as pipe girth welding, different angle butt welding, etc. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the problems of difficult to guarantee the quality and precision of the welding machine and the lack of flexibility of the equipment in the prior art, and proposes a pipe automatic welding equipment.

[0007] In order to achieve the above object, the utility model discloses the following technical scheme: A kind of round tube automatic welding equipment, including welding table, round tube main part and laser welder, the welding table top is equipped with laser welder, the surface both ends of the round tube main part are vertically clamped with V-shaped clamping base and V-shaped positioning base respectively, one side of the V-shaped clamping base is connected with angle adjusting motor, the bottom surface both sides of the V-shaped clamping base are symmetrically equipped with mounting bracket, the top surface both sides of the V-shaped positioning base are symmetrically equipped with connecting frame, the surface of the mounting bracket is vertically bolted with compression cylinder, and the movable end of compression cylinder is connected with the surface of connecting frame, the surface of the welding table is bolted with door type support.

[0008] Preferably, the surface of the side of the V-shaped clamping base close to the door type support is equipped with connecting backboard, the output shaft of the angle adjusting motor is keyed with the surface of connecting backboard, and the angle adjusting motor is embedded in the side of the door type support.

[0009] Preferably, the surface both sides of the V-shaped clamping base are symmetrically equipped with first limiting slot and second limiting slot, and the first limiting slot is located inside, the bottom end of the V-shaped positioning base is equipped with straight limiting strip, and the side of the V-shaped positioning base close to the bottom end is equipped with L-shaped limiting strip.

[0010] Preferably, the straight limiting strip is gap matched with the inner wall of the first limiting slot, the bottom end of the L-shaped limiting strip is gap matched with the inner wall of the second limiting slot, and the first limiting slot and the second limiting slot are vertically penetrated with the surface of the V-shaped clamping base.

[0011] Preferably, the inner wall of the V-shaped clamping base and the V-shaped positioning base is linearly arrayed and equipped with anti-skid strip, the anti-skid strip is abutted with the surface of the round tube main part, and the V-shaped positioning base is symmetrically distributed along the both sides of the welding table.

[0012] Preferably, the surface of the welding table is equipped with gas protection groove, the inside of the gas protection groove is equipped with gas guide elbow along S type, the surface of the gas guide elbow is equipped with gas injection hole, and one end of the gas guide elbow is connected with pressure pump.

[0013] Preferably, the top end bottom surface of the door type support is slidably connected with laser welder, and the adjacent side surface of the V-shaped clamping base and the V-shaped positioning base is perpendicular to each other.

[0014] Beneficial effects

[0015] The utility model discloses, adopt V type clamping base and V type positioning base to the clamping of circular tube main part end part, compared with traditional arc clamping structure, have higher stability and adaptability, can be applicable to the clamping of various size circular tube main part, the adaptability of the clamping of circular tube main part is enriched, need not frequently replace the clamping tooling just can satisfy the welding demand of different diameter circular tube, improved production efficiency, through the stable clamping force of pressure -tight air cylinder provides, and the vertical positioning of straight line limit strip and first limit slot, ensure that circular pipe does not occur displacement and wobble in the welding process, guarantee the accuracy of welding position, reduce the welding deviation caused by the clamping instability, thereby improve the quality and precision of weld, reduce the scrap rate, simultaneously through angle adjusting motor drive whole V type clamping base and V type positioning base rotation angle, realized the multi -angle, multi -position welding adaptation of circular tube main part welding, can satisfy complex welding process requirement, such as circular pipe's ring slit welding, the butt welding of different angle etc., greatly expand the welding function and application scope of equipment, make the equipment can cope with various shapes and structure's circular pipe welding work, improved the versatility and flexibility of equipment, have stronger competitiveness in the diversified industrial production.

[0016] The utility model discloses, adopt the gas protection groove of welding platform surface setting through pressure pump and S type distribution's gas guide elbow, even spray protection gas or cold air to the welding area through the air injection hole, prevent the oxidation of welding position, reduce the welding thermal stress, effectively avoid the deformation of circular tube main part because of high temperature, guarantee the size precision and mechanical property of circular pipe, further improve the welding quality, ensure that the circular pipe after welding meets the high quality standard requirement. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure diagram of the utility model;

[0018] Figure 2 It is the side sectional view of the utility model;

[0019] Figure 3 It is the V type clamping base connecting structure diagram of the utility model;

[0020] Figure 4 It is the V type clamping base connecting shaft drawing of the utility model;

[0021] Figure 5 It is the V type clamping base clamping structure diagram of the utility model.

[0022] Legend:

[0023] 1, welding platform; 2, gas protection groove; 3, gas guide elbow; 4, pressure pump; 5, gas injection hole; 6, door type support; 7, round pipe main body; 8, V type clamping base; 9, V type positioning base; 10, connecting back plate; 11, angle adjusting motor; 12, mounting frame; 13, connecting frame; 14, pressing cylinder; 15, anti-skid strip; 16, straight line limiting strip; 17, L type limiting strip; 18, first limiting groove; 19, second limiting groove; 20, laser welder. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model will be further described below in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] The specific embodiments of the utility model will be described below in combination with the drawings. Embodiment one:

[0027] Reference Figures 1 to 5The utility model provides a kind of automatic welding equipment of round tube, including welding platform 1, round tube body 7 and laser welder 20, welding platform 1 top is equipped with laser welder 20, V type clamping base 8 is close to the side surface of door type support 6 is equipped with connecting backplate 10, the output shaft of angle adjusting motor 11 is connected with the surface key of connecting backplate 10, and angle adjusting motor 11 is embedded in the side of door type support 6, and welding platform 1 is as bearing platform, and it supports laser welder 20, V type clamping base 8, V type positioning base 9 and relevant adjusting and driving components.Laser welder 20 is used to carry out welding operation to round tube body 7, and V type clamping base 8 and V type positioning base 9 are clamped and fixed from both sides to the end of round tube body 7, and the stability of clamping is guaranteed by the pressure provided by pressing cylinder 14, and angle adjusting motor 11 can adjust the welding angle of round tube, and door type support 6 provides support and orientation for the movement of laser welder 20, and welding platform 1 surface is bolted with door type support 6, and the surface both ends of round tube body 7 are vertically clamped with V type clamping base 8 and V type positioning base 9 respectively, and one side of V type clamping base 8 is connected with angle adjusting motor 11, and the bottom surface both sides of V type clamping base 8 are symmetrically equipped with mounting bracket 12, and the top surface both sides of V type positioning base 9 are symmetrically equipped with connecting frame 13, and the surface of mounting bracket 12 is vertically bolted with pressing cylinder 14, and the movable end of pressing cylinder 14 is connected with the surface of connecting frame 13, first, round tube body 7 is placed between V type clamping base 8 and V type positioning base 9, pressing cylinder 14 is started, so that both are tightly clamped round tube body 7, then, according to welding demand, angle adjusting motor 11 can drive round tube body 7 to rotate to appropriate welding angle, and laser welder 20 is moved to welding position on door type support 6 to carry out welding.In the welding process, gas protection device gas protection groove 2, gas guide elbow 3 and the like work synchronously to provide protective gas for welding area, prevent oxidation and deformation, and the whole process is operated in coordination, to complete the automatic welding of round tube, and this arrangement makes the equipment compact and reasonable, and the cooperation between components is close and efficient, to realize all-round welding operation on round tube, improve the degree of automation and production efficiency of welding, and also ensure the stability and reliability of welding quality, to provide strong support for large-scale round tube welding production.

[0028] V type clamping base 8 and V type positioning base 9 jointly act from both sides to stably clamp the end of round tube body 7, ensure that round tube does not displace and shake in the welding process, guarantee the accuracy of welding position, and the V type structure design can adapt to round tubes of different diameters, provide higher clamping adaptability, compared with traditional arc clamping structure, and the clamping of round tubes of multiple sizes is more flexible and stable.

[0029] The inner walls of the V-shaped clamping base 8 and the V-shaped positioning base 9 are provided with anti-skid strips 15 arranged in a linear array, the anti-skid strips 15 abut against the surface of the circular pipe body 7, the V-shaped positioning base 9 is symmetrically distributed along both sides of the welding table 1, the V-shaped clamping base 8 is symmetrically provided with a first limiting groove 18 and a second limiting groove 19 on the surface of both sides, and the first limiting groove 18 is located on the inner side, the V-shaped positioning base 9 is provided with a linear limiting strip 16 at the bottom end, the V-shaped positioning base 9 is provided with an L-shaped limiting strip 17 near the bottom end on the side surface, the linear limiting strip 16 is in clearance fit with the inner wall of the first limiting groove 18, the bottom end of the L-shaped limiting strip 17 is in clearance fit with the inner wall of the second limiting groove 19, the first limiting groove 18 and the second limiting groove 19 are vertically penetrated through the surface of the V-shaped clamping base 8, the inner walls of the V-shaped clamping base 8 and the V-shaped positioning base 9 are provided with anti-skid strips 15, which increases the friction force with the surface of the circular pipe body 7 and prevents the circular pipe from sliding, when the circular pipe is placed between the two, the pressing cylinder 14 is started, the movable end of the pressing cylinder 14 pulls the connecting frame 13, so that the V-shaped positioning base 9 approaches the V-shaped clamping base 8, so as to clamp the circular pipe, at the same time, the linear limiting strip 16 at the bottom end of the V-shaped positioning base 9 is in fit with the first limiting groove 18 on the surface of the V-shaped clamping base 8, and the L-shaped limiting strip 17 is in fit with the second limiting groove 19, which realizes the accurate limiting of the V-shaped positioning base 9 and further improves the clamping precision and stability, so as to ensure that the circular pipe always maintains the correct position during the welding process, when preparing for welding, the circular pipe body 7 is placed on the V-shaped clamping base 8, so that the linear limiting strip 16 is aligned with the first limiting groove 18, and the L-shaped limiting strip 17 is aligned with the second limiting groove 19, then the pressing cylinder 14 works, the clamping force is gradually increased, and the circular pipe is clamped between the two.

[0030] The angle adjusting motor 11 realizes the angle adjustment of the clamped pipe body 7, so that the laser welder 20 can weld the pipe at different angles to meet the requirements of complex welding processes, such as girth welding of the pipe, butt welding at different angles, etc., thereby expanding the welding functions and application range of the equipment. The output shaft of the angle adjusting motor 11 is connected to the connecting back plate 10 of the V-shaped clamping base 8 through a key connection. When the motor receives a control signal and rotates, it can drive the V-shaped clamping base 8 and the clamped pipe body 7 to rotate around the motor shaft, thereby realizing accurate angle adjustment. The motor is embedded in the side of the door-shaped support 6, which ensures the compactness and stability of the structure, and also provides convenience for the installation and maintenance of the motor. During the welding process, according to the preset welding process parameters or the real-time instructions of the operator, the angle adjusting motor 11 starts to rotate at the required angle and speed, driving the pipe body 7 to rotate to the appropriate welding angle. For example, during girth welding of the pipe, the motor can rotate at a constant speed, allowing the laser welder 20 to continuously weld along the circumference of the pipe, ensuring the uniformity and quality of the weld, increasing the flexibility and adaptability of the equipment, and being able to handle various welding requirements of different angles and shapes, improving the automation level and welding quality of the equipment, reducing the error and labor intensity of manual angle adjustment, and improving production efficiency and product consistency.

[0031] The pressing cylinder 14 is installed on the mounting bracket 12 of the V-shaped clamping base 8, and its movable end is connected to the connecting bracket 13 of the V-shaped positioning base 9. When the cylinder receives a signal from the control system, the piston in the cylinder moves, pushing or pulling the connecting bracket 13, so that the V-shaped positioning base 9 approaches or moves away from the V-shaped clamping base 8, realizing the clamping or loosening action of the pipe body 7. The pressure of the cylinder can be adjusted according to actual needs to ensure sufficient clamping force without damaging the surface of the pipe. Before welding, the cylinder is first in a loosening state to facilitate the placement of the pipe body 7 on the V-shaped clamping base 8 and preliminary positioning. Then, the cylinder starts according to the preset pressure value, gradually increases the clamping force, and reaches the set pressure to ensure that the pipe is clamped firmly. During welding, the cylinder maintains stable pressure to prevent the pipe from loosening. After welding is completed, the cylinder receives a signal again, and the piston moves in the opposite direction to loosen the clamping to facilitate the removal of the welded pipe, completing a welding cycle. This provides reliable control of clamping force, ensures the stability of the pipe during welding, and improves welding precision and quality. At the same time, the automatic operation of the cylinder simplifies the work process, improves production efficiency, and reduces the uncertainty and labor intensity of manual operation, matching the automatic welding process of the entire equipment.

[0032] In the process of circular tube welding, protective gas is provided for the welding area to prevent chemical reactions between the welding site and oxygen, nitrogen and other gases in the air, resulting in defects such as oxidation and porosity in the weld. At the same time, the welding site can be cooled and protected by blowing cold air to reduce welding thermal stress and prevent deformation of the circular tube body 7, ensuring welding quality and the mechanical properties of the circular tube. The welding table 1 is provided with a gas protection groove 2, and the gas protection groove 2 is provided with a gas guide elbow 3 along the S-shaped distribution inside. The gas guide elbow 3 is provided with a gas injection hole 5 on the surface, and the gas guide elbow 3 is connected with a pressure pump 4 at one end. The pressure pump 4 pumps protective gas such as helium, argon and other gases or cold air into the gas guide elbow 3. The gas flows in the gas guide elbow 3 and is uniformly sprayed to the welding area through the gas injection hole 5 on the surface, forming a protective gas curtain to isolate the welding site from the outside air and prevent oxidation and other adverse chemical reactions. Before welding starts, the pressure pump 4 is started to fill the gas guide elbow 3 with protective gas or cold air, so that it is full of gas and reaches the preset pressure. When the laser welder 20 starts to work, the gas continues to be sprayed from the gas injection hole 5 and surrounds the welding site to form a protective atmosphere. During the welding process, the pressure pump 4 maintains the stable supply of gas as needed to ensure the continuity of the protection effect. After welding is completed, the pressure pump 4 stops working and the gas stops spraying, effectively protecting the welding area, improving the quality and stability of the weld, reducing the occurrence of welding defects and reducing the scrap rate. At the same time, the cooling and protection of the welding site help to prevent the circular tube from deforming due to thermal stress, ensuring the dimensional accuracy and mechanical properties of the circular tube, improving the quality and reliability of the product, and meeting the production needs of high welding quality.

[0033] The door-shaped support 6 serves as a support and guide for the laser welder 20, enabling it to move stably to the appropriate welding position on the welding table 1, ensuring accurate alignment of the laser welder 20 with the welding site of the circular tube body 7 and achieving high-quality welding operation. At the same time, the structural design of the door-shaped support 6 ensures its stability, which can withstand the weight of the laser welder 20 and the inertial force during movement, providing reliable protection for the smooth progress of the welding process.

[0034] The laser welder 20 is the core component of the welding equipment, which uses high-energy density laser beam to melt and solidify the welding position of the pipe body 7, realizes the connection of materials, and forms high-quality weld. Laser welding has the advantages of fast welding speed, narrow weld, small heat-affected zone, small welding deformation, etc., which can meet the high-precision and high-efficiency welding requirements, and is especially suitable for such workpieces as pipes which have high requirements on welding quality. The laser welder 20 is arranged on the top surface of the door-shaped support 6, and the adjacent sides of the V-shaped clamping base 8 and the V-shaped positioning base 9 are perpendicular to each other. Before welding, the position of the laser welder 20 on the door-shaped support 6 is adjusted by the control system according to the size and welding position requirements of the pipe body 7, so that it is accurately aligned with the welding position. Then, the laser welder 20 is started to emit a high-energy laser beam to weld the pipe body 7. During the welding process, the laser welder 20 can automatically adjust according to the preset welding parameters such as laser power, welding speed, pulse frequency, etc., to ensure the stability and consistency of the welding quality. At the same time, the door-shaped support 6 provides stable support and accurate guidance for the movement of the laser welder 20, so that it can quickly and accurately complete the welding task. The cooperation of the door-shaped support 6 and the laser welder 20 realizes efficient and accurate welding of the pipe body 7, improves the welding quality and production efficiency. The application of laser welding technology makes the weld quality higher and the heat-affected zone smaller, reduces the subsequent processing procedures, and reduces the production cost. At the same time, the guiding and supporting function of the door-shaped support 6 ensures the stable operation of the laser welder 20, improves the reliability and stability of the equipment, and provides strong support for large-scale automatic welding production.

[0035] In summary, the automatic pipe welding equipment optimizes the design from clamping and positioning, angle adjustment, welding process to gas protection through the cooperation of various components, effectively solves the problems of unstable clamping, limited welding angle, low welding quality and easy oxidation deformation in traditional pipe welding equipment, has high practical value and wide application prospect, and can meet the high-quality, high-efficiency and automation requirements of modern industrial production for pipe welding Specific embodiment two:

[0037] Reference Figures 1 to 5 According to the contents in the above specific embodiments, the following contents are further disclosed:

[0038] In actual use, the door-shaped support 6 is provided with a track inside the top end, and the laser welder 20 is connected with the door-shaped support 6 by at least one of a pneumatic cylinder, a lead screw and a linear motor, which is used to adjust the horizontal position of the laser welder 20 and to position and weld the welding position on the surface of the pipe body 7.

[0039] Working principle: The high-energy density laser beam is used to melt and solidify the welding position of the round pipe body 7, so as to realize the connection of the material and form a high-quality weld. Laser welding has the advantages of fast welding speed, narrow weld, small heat-affected zone and small welding deformation, which makes it particularly suitable for the welding of round pipes which have high requirements on welding quality.

[0040] Running logic: Before welding, according to the size of the round pipe body 7 and the welding position requirements, the position of the laser welder 20 on the door-shaped support 6 is adjusted by the control system to accurately align the welding position. During the welding process, the laser welder 20 can automatically adjust according to the preset welding parameters such as laser power, welding speed, pulse frequency, etc., to ensure the stability and consistency of the welding quality. For example, for round pipes of different materials and thicknesses, the laser power can be adjusted to ensure the penetration and strength of the welding; the welding speed is controlled to ensure the forming quality of the weld; the appropriate pulse frequency is used to optimize the energy distribution in the welding process and reduce the occurrence of welding defects.

[0041] Overall, the laser welder 20 plays a core role in the entire round pipe automatic welding equipment, its precise position adjustment capability and efficient welding performance work together with other components to ensure high quality and high efficiency of round pipe welding. The structure of the laser welder 20 and its connected controller can be designed and installed adaptively based on existing disclosed technical solutions.

[0042] At the same time, further, to prevent the size of the round pipe body 7 from being clamped, the bottom end of the straight limiting strip 16 is shorter than the bottom end of the L-shaped limiting strip 17, that is, the length of the L-shaped limiting strip 17 is longer than that of the straight limiting strip 16, so as to avoid the longer straight limiting strip 16 from blocking the size of the round pipe body 7 when clamping larger sizes.

[0043] In summary:

[0044] 1、Adopt V type clamping base 8 and V type positioning base 9 to the end of the pipe body 7 clamping, compared with the traditional arc clamping structure, with higher stability and adaptability, can be applicable to a variety of size pipe body 7 clamping, rich in the adaptability of the pipe body 7 clamping, without frequent replacement of clamping tool can meet the welding needs of different diameter pipe, improve the production efficiency, through the pressure cylinder 14 provides stable clamping force, and straight limit strip 16 and the vertical positioning of the first limit slot 18, ensure that the pipe does not shift and sway in the welding process, guarantee the accuracy of the welding position, reduce the welding deviation caused by unstable clamping, thereby improving the quality and precision of the weld, reduce the scrap rate, at the same time through the angle adjusting motor 11 drive the whole V type clamping base 8 and V type positioning base 9 rotation angle, realize the multi-angle, multi-position welding of pipe body 7 welding adaptation, can meet the complex welding process requirements, such as pipe girth welding, different angle butt welding etc., greatly expand the welding function and application range of the equipment, make the equipment can deal with various shapes and structure of pipe welding work, improve the versatility and flexibility of the equipment, have stronger competitiveness in the diversified industrial production;

[0045] 2、Adopt the gas protection groove 2 set up on the surface of the welding table 1, through the pressure pump 4 and S type distribution gas guide elbow 3, the protective gas such as helium etc. or cold air is evenly sprayed to the welding area through the air injection hole 5, prevent the welding part oxidation, at the same time, the welding position is cooled and protected, reduce the welding thermal stress, effectively avoid the pipe body 7 deformation due to high temperature, ensure the size accuracy and mechanical properties of the pipe, further improve the welding quality, ensure that the welded pipe meets the high quality standard requirements.

[0046] In the utility model, unless another definite provision and limitation, first feature is in second feature " on " or " below " can include first and second feature direct contact, also can include first and second feature is not direct contact but is through the contact between them another feature.And, first feature is in second feature " on ", " above " and " on " include first feature is in second feature directly above and oblique above, or just indicate that the first feature horizontal height is higher than second feature.First feature is in second feature " below ", " below " and " below " include first feature is in second feature directly below and oblique below, or just indicate that the first feature horizontal height is less than second feature.

[0047] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A round tube automatic welding apparatus comprising a welding table (1), a round tube main body (7) and a laser welder (20), characterized in that: The top of the welding table (1) is provided with a laser welder (20), the surface of the circular pipe body (7) is vertically clamped with a V-shaped clamping base (8) and a V-shaped positioning base (9) at both ends respectively, one side of the V-shaped clamping base (8) is connected with an angle adjusting motor (11), both sides of the bottom surface of the V-shaped clamping base (8) are symmetrically provided with mounting frames (12), both sides of the top surface of the V-shaped positioning base (9) are symmetrically provided with connecting frames (13), the surface of the mounting frame (12) is vertically bolted with a pressing cylinder (14), and the movable end of the pressing cylinder (14) is connected with the surface of the connecting frame (13), the surface of the welding table (1) is bolted with a door type support (6), the surface of the welding table (1) is provided with a gas protection groove (2), the inside of the gas protection groove (2) is provided with a gas guide elbow (3) along the S-shaped distribution, and the surface of the gas guide elbow (3) is provided with a gas injection hole (5).

2. A pipe automatic welding apparatus according to claim 1, characterized by: The surface of the V-shaped clamping base (8) near the door type support (6) is provided with a connecting back plate (10), the output shaft of the angle adjusting motor (11) is connected with the surface of the connecting back plate (10) by keying, and the angle adjusting motor (11) is embedded in the side surface of the door type support (6).

3. A pipe automatic welding apparatus according to claim 1, wherein: The surface of the V-shaped clamping base (8) is symmetrically provided with a first limiting groove (18) and a second limiting groove (19) at both sides, and the first limiting groove (18) is located on the inner side, the bottom end of the V-shaped positioning base (9) is provided with a straight limiting strip (15), and the side of the V-shaped positioning base (9) near the bottom end is provided with an L-shaped limiting strip (16).

4. A pipe automatic welding apparatus according to claim 3, wherein: The straight limiting strip (15) is gap matched with the inner wall of the first limiting groove (18), the bottom end of the L-shaped limiting strip (16) is gap matched with the inner wall of the second limiting groove (19), and the first limiting groove (18) and the second limiting groove (19) are vertically penetrated through the surface of the V-shaped clamping base (8).

5. A pipe automatic welding apparatus according to claim 1, wherein: The inner walls of the V-shaped clamping base (8) and the V-shaped positioning base (9) are linearly arrayed with anti-skid strips (15), the anti-skid strips (15) abut against the surface of the circular pipe body (7), and the V-shaped positioning base (9) is symmetrically distributed along both sides of the welding table (1).

6. A pipe automatic welding apparatus according to claim 1, wherein: One end of the gas guide elbow (3) is connected with a pressure pump (4).

7. A pipe automatic welding apparatus according to claim 1, wherein: The top end of the door type support (6) is slidingly connected with the laser welder (20), and the adjacent side surfaces of the V-shaped clamping base (8) and the V-shaped positioning base (9) are perpendicular to each other.

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