High-precision welding device for large-diameter steel pipe

Abstract

The high-precision welding device comprises a bottom plate, a sliding groove is formed in one side of the top of the bottom plate, sliding blocks are connected to the inner walls of the two sides of the sliding groove in a sliding mode, a movable plate is fixedly connected to the tops of the sliding blocks, and a motor is fixedly installed on the outer surface of one side of the movable plate. The output end of the motor is fixedly connected with a first rotating rod, the first rotating rod penetrates through the side wall of the movable plate, the top of the first rotating rod is fixedly connected with a limiting block, a fixed plate is fixedly installed on the edge of one side of the top of the bottom plate, and the side wall of the fixed plate is rotationally connected with a second rotating rod; a plurality of grooves distributed around the circle center in an array mode are formed in the outer surfaces of the first rotating rod and the second rotating rod at equal intervals, electric push rods are fixedly connected to the bottom ends of the inner walls of the grooves, and adjusting plates are fixedly connected to the output ends of the electric push rods; according to the utility model, uneven burrs on the surface of the steel pipe orifice can be scraped and cleaned, and the welding precision is improved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a high-precision welding device for large-diameter steel pipes. Background Art

[0002] Stainless steel pipe is a hollow long round steel strip, which is widely used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instrumentation, and mechanical structural components. It is also widely used in the manufacture of mechanical parts and engineering structures. It is also often used as furniture and kitchen utensils. During the manufacturing process, stainless steel pipes usually need to expand their pipe mouth diameter according to different workpieces.

[0003] During welding, there may be an error in the diameters of the two steel pipes, and the device cannot adjust the concentricity of the two steel pipes, which will cause a large error in the finished product after welding, resulting in the welded steel pipe being unable to be used normally. At the same time, after production, the welding parts of the steel pipes will have burrs of varying degrees, which may affect the welding accuracy to a certain extent. For this reason, we propose a high-precision welding device for large-diameter steel pipes. Utility Model Content

[0004] The utility model aims to provide a high-precision welding device for large-diameter steel pipes to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-precision welding device for large-diameter steel pipes, comprising a bottom plate, a slide groove is provided on one side of the top of the bottom plate, and sliders are slidably connected to the inner walls on both sides of the slide groove, a movable plate is fixedly connected to the top of the slider, a motor is fixedly installed on the outer surface of one side of the movable plate, a first rotating rod is fixedly connected to the output end of the motor, and the first rotating rod passes through the side wall of the movable plate, a limiting block is fixedly connected to the top of the first rotating rod, a fixed plate is fixedly installed on the edge of one side of the top of the bottom plate, and a second rotating rod is rotatably connected to the side wall of the fixed plate, and the outer surfaces of the first rotating rod and the second rotating rod are equidistantly provided with a plurality of grooves distributed in a circle array, the bottom ends of the inner walls of the plurality of grooves are fixedly connected to electric push rods, and the output ends of the plurality of electric push rods are fixedly connected to adjusting plates, a U-shaped bracket is fixedly installed in the middle of the upper surface of the bottom plate, a welding mechanism is fixedly installed in the middle of the upper surface of the bottom plate near the inner side of the U-shaped bracket, a hydraulic cylinder is fixedly installed on the top of the U-shaped bracket, a telescopic rod is fixedly connected to the output end of the hydraulic cylinder, and a connecting block is fixedly connected to one end of the telescopic rod.

[0006] Preferably, a spring is fixedly connected between the outer surface of one side of the sliding block and the inner wall of the sliding groove.

[0007] Preferably, a fixing hole in a square shape is provided on the top of the second rotating rod, and the limiting block is clamped in the fixing hole.

[0008] Preferably, several of the adjustment plates are clamped in the groove.

[0009] Preferably, scrapers arranged in an L shape are fixedly connected to both sides of the connection block.

[0010] Compared with the prior art, the beneficial effects of the utility model are: first, the electric push rod is driven to drive the adjustment plate to move, and then the adjustment plate can be adjusted outward along the groove, so as to adjust the concentricity of the two steel pipes and reduce the generation of errors, and then the hydraulic cylinder is started to drive the telescopic rod to move downward, through the setting of the connecting block and the scraper, and at the same time, the motor is started to drive the first rotating rod and the second rotating rod to rotate and cooperate, so as to scrape and clean the uneven burrs at the pipe mouth, thereby improving the welding accuracy to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0013] Figure 3 This is a schematic cross-sectional structural diagram of a first rotating rod of the utility model;

[0014] Figure 4 This is a schematic diagram of the second rotating rod structure of the utility model;

[0015] Figure 5 This is a schematic diagram of the scraper structure of the utility model.

[0016] In the figure: 1. bottom plate; 101. slide groove; 11. fixed plate; 12. movable plate; 13. slider; 14. spring; 2. motor; 201. groove; 21. first rotating rod; 22. electric push rod; 23. limit block; 3. adjustment plate; 4. second rotating rod; 41. fixing hole; 5. welding mechanism; 6. U-shaped bracket; 7. hydraulic cylinder; 71. telescopic rod; 8. connecting block; 9. scraper. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5The utility model provides a technical solution: a high-precision welding device for large-diameter steel pipes, including a bottom plate 1, a slide groove 101 is opened on one side of the top of the bottom plate 1, and the inner walls on both sides of the slide groove 101 are slidably connected with sliders 13, and the top of the slider 13 is fixedly connected with a movable plate 12, and a motor 2 is fixedly installed on the outer surface of one side of the movable plate 12, and the output end of the motor 2 is fixedly connected with a first rotating rod 21, and the first rotating rod 21 passes through the side wall of the movable plate 12, and the top of the first rotating rod 21 is fixedly connected with a limited block 23, and a fixed plate 11 is fixedly installed on the edge of one side of the top of the bottom plate 1, and the side wall of the fixed plate 11 rotates A second rotating rod 4 is connected, and a plurality of grooves 201 distributed in a circle-centered array are equidistantly provided on the outer surfaces of the first rotating rod 21 and the second rotating rod 4. The bottom ends of the inner walls of the plurality of grooves 201 are fixedly connected with electric push rods 22, and the output ends of the plurality of electric push rods 22 are fixedly connected with adjusting plates 3. A U-shaped bracket 6 is fixedly installed in the middle of the upper surface of the base plate 1, and a welding mechanism 5 is fixedly installed in the middle of the upper surface of the base plate 1 near the inner side of the U-shaped bracket 6. A hydraulic cylinder 7 is fixedly installed on the top of the U-shaped bracket 6, and a telescopic rod 71 is fixedly connected to the output end of the hydraulic cylinder 7, and a connecting block 8 is fixedly connected to one end of the telescopic rod 71.

[0019] Furthermore, a spring 14 is fixedly connected between the outer surface of one side of the slider 13 and the inner wall of the slide groove 101 , and the slider 13 can be driven to move by the spring 14 .

[0020] Furthermore, a square fixing hole 41 is provided on the top of the second rotating rod 4 , and the limiting block 23 is stuck in the fixing hole 41 . When the limiting block 23 is stuck in the fixing hole 41 , the rotation of the first rotating rod 21 will drive the second rotating rod 4 .

[0021] Furthermore, a plurality of adjustment plates 3 are clamped in the groove 201 , and the adjustment plates 3 slide up and down along the inner wall of the groove 201 , so as to adjust the inner diameter of the clamped steel pipe.

[0022] Furthermore, scrapers 9 arranged in an L shape are fixedly connected to both sides of the connection block 8, and burrs on the welding parts of the steel pipe can be scraped and cleaned by the scrapers 9.

[0023] Specifically, when the utility model is used, when welding of steel pipes is required, the movable plate 12 is first pulled by the force of the spring 14, so that the slider 13 can move to one side along the slide groove 101, and then the two ends of the steel pipes to be welded are respectively sleeved on the first rotating rod 21 and the second rotating rod 4, and then the staff unloads the force on the movable plate 12, so that the movable plate 12 moves to the other side under the force of the spring 14, and at this time, the electric push rod 22 is driven to drive the adjustment plate 3 to move upward, so that the inner wall of the steel pipe can be positioned. Clamp, and then insert the limit block 23 into the fixing hole 41. At this time, the first rotating rod 21 and the second rotating rod 4 are in a locked state. Then start the hydraulic cylinder 7 to drive the telescopic rod 71 to move downward to the pipe mouth of the steel pipe, and then align the scraper 9 with the pipe mouth at an angle, and randomly start the motor 2 to drive the first rotating rod 21 and the second rotating rod 4 to rotate, so that the steel pipes at both ends can be driven to rotate, so that the uneven burrs at the pipe mouth of the steel pipe can be scraped and cleaned, and finally the pipe mouths of the steel pipes at both ends are welded through the welding mechanism 5.

[0024] 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 high-precision welding device for large-diameter steel pipes, comprising a base plate (1), characterized in that: A slide groove (101) is provided on one side of the top of the bottom plate (1), and slide blocks (13) are slidably connected to the inner walls on both sides of the slide groove (101), and a movable plate (12) is fixedly connected to the top of the slide block (13), and a motor (2) is fixedly installed on the outer surface of one side of the movable plate (12), and the output end of the motor (2) is fixedly connected to a first rotating rod (21), and the first rotating rod (21) passes through the side wall of the movable plate (12), and the top of the first rotating rod (21) is fixedly connected to a limiting block (23), and a fixed plate (11) is fixedly installed on the edge of one side of the top of the bottom plate (1), and the side wall of the fixed plate (11) is rotatably connected to a second rotating rod (4), and the first rotating rod (21) ) and the outer surfaces of the second rotating rod (4) are equidistantly provided with a plurality of grooves (201) distributed in a circle array, the bottom ends of the inner walls of a plurality of the grooves (201) are fixedly connected to electric push rods (22), the output ends of a plurality of the electric push rods (22) are fixedly connected to adjustment plates (3), a U-shaped bracket (6) is fixedly installed in the middle of the upper surface of the base plate (1), a welding mechanism (5) is fixedly installed in the middle of the upper surface of the base plate (1) near the inner side of the U-shaped bracket (6), a hydraulic cylinder (7) is fixedly installed on the top of the U-shaped bracket (6), the output end of the hydraulic cylinder (7) is fixedly connected to a telescopic rod (71), and one end of the telescopic rod (71) is fixedly connected to a connecting block (8).

2. A high-precision welding device for large-diameter steel pipes according to claim 1, characterized in that: A spring (14) is fixedly connected between the outer surface of one side of the sliding block (13) and the inner wall of the sliding groove (101).

3. The high-precision welding device for large-diameter steel pipes according to claim 1 is characterized in that: A fixing hole (41) in a square shape is provided on the top of the second rotating rod (4), and the limiting block (23) is clamped in the fixing hole (41).

4. The high-precision welding device for large-diameter steel pipes according to claim 1 is characterized in that: A plurality of the adjustment plates (3) are all clamped in the groove (201).

5. The high-precision welding device for large-diameter steel pipe according to claim 1, characterized in that: Scrapers (9) arranged in an L shape are fixedly connected to both sides of the connection block (8).

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