Metal pipe welding machine

Abstract

The invention relates to the technical field of welding, and discloses a metal pipe welding machine which comprises a horseshoe-shaped fixing base, a welding mechanism and a clamping mechanism. The clamping mechanism comprises an extending support fixedly connected with the horseshoe-shaped fixing base, a fixing cross beam is arranged on the extending support, a hanging plate is arranged at the end of the fixing cross beam, and an elastic clamping assembly used for fixing the metal pipe is arranged at the end, away from the fixing cross beam, of the hanging plate; the welding mechanism comprises four rotating shafts arranged on the side, close to the clamping mechanism, of the horseshoe-shaped fixing base, the central angle of every two adjacent rotating shafts is smaller than 120 degrees, the ends of the rotating shafts are fixedly connected with clamping gears, and a C-shaped rotating base is arranged on the side, close to the clamping mechanism, of the horseshoe-shaped fixing base. According to the welding machine, the four clamping gears are matched with the C-shaped gear ring, so that the welding head can rotate around the metal pipe by one circle to complete welding treatment, and the whole welding machine is relatively simple in structure and smaller in occupied space.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a metal pipe welding machine. Background Art

[0002] The more common welding method is arc welding, which uses the heat generated by arc discharge (commonly known as arc combustion) to melt the base metal and filler metal, thereby connecting the two pieces of metal into a whole.

[0003] Welding is often used to fix two metal pipes. However, since the ends of the metal pipes need to be welded in a whole circle when they are butt-jointed, common welding machines can only weld flat structures. Arc surface welding requires a high-precision robot for welding. The robot needs enough space to move during work, so as to achieve welding processing of a circle of the metal pipe in space. At this time, the metal pipe needs to have enough space to operate during the welding process. However, some metal pipes have been installed at the construction site, and the construction site itself cannot provide enough space to install the robot, so it needs to be improved. Summary of the Invention

[0004] The present invention provides a metal pipe welding machine, which solves the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A metal pipe welding machine includes a horseshoe-shaped fixed seat, a welding mechanism and a clamping mechanism; the clamping mechanism includes an extended bracket fixedly connected to the horseshoe-shaped fixed seat, the extended bracket is provided with a fixed beam, the end of the fixed beam is provided with a hanging plate, and the end of the hanging plate away from the fixed beam is provided with an elastic clamping assembly for fixing the metal pipe; the welding mechanism includes four rotating shafts arranged on the side of the horseshoe-shaped fixed seat close to the clamping mechanism, the central angle of two adjacent rotating shafts is less than 120°, the ends of the rotating shafts are fixedly connected with clamping gears, the side of the horseshoe-shaped fixed seat close to the clamping mechanism is provided with a C-shaped rotating seat, the side of the C-shaped rotating seat is provided with a welding assembly for welding metal pipes, the outside of the C-shaped rotating seat is provided with a C-shaped gear ring meshing with the clamping gear, and the central angle corresponding to the opening of the C-shaped rotating seat is less than 120°.

[0007] As a preferred technical solution of the present invention, a rotational drive assembly for driving two adjacent rotating shafts to rotate synchronously is provided on the side of the horseshoe-shaped fixed seat away from the C-shaped rotating seat, and fixed clamping assemblies for fixing the metal tube are provided on both sides of the horseshoe-shaped fixed seat. The rotational drive assembly includes a driven pulley provided at the end of the rotating shaft away from the clamping gear, a drive motor is provided on the side of the horseshoe-shaped fixed seat, the output shaft of the drive motor is fixedly connected to the drive pulley, and the drive pulley is connected to the driven pulley via a synchronous belt, and a tensioner that cooperates with the synchronous belt is rotatably connected to the horseshoe-shaped fixed seat. The fixed clamping assembly includes a first fixed seat fixedly connected to the horseshoe-shaped fixed seat, a clamping screw being threadedly connected to the first fixed seat, and a first clamping piece being rotatably connected to the end of the clamping screw near the center of the horseshoe-shaped fixed seat, and a rotating wheel is provided on the end of the clamping screw away from the center of the horseshoe-shaped fixed seat.

[0008] As a preferred technical solution of the present invention, the welding assembly includes a bracket fixedly connected to a C-shaped rotating base, the bracket fixedly connected to a top plate, a lifting screw threadedly connected to the middle portion of the top plate, the lifting screw rotatably connected to the lifting plate at one end near the center of the horseshoe-shaped fixed base, and a welding head provided on the side of the lifting plate near the center of the horseshoe-shaped fixed base. Telescopic sleeves are provided on both sides of the top plate, and the telescopic sleeves are slidably connected to telescopic rods fixedly connected to the lifting plate.

[0009] As a preferred technical solution of the present invention, the two sides of the C-shaped rotating seat are provided with sliding grooves concentrically arranged with the C-shaped rotating seat, the side of the horseshoe-shaped fixed seat is provided with an auxiliary bracket, and the two sides of the auxiliary bracket are provided with ball heads that cooperate with the sliding grooves.

[0010] As a preferred technical solution of the present invention, the two ends of the fixed beam are slidably connected to the extending bracket, and a fixed plate is provided at the end of the extending bracket. The middle part of the fixed plate is threadedly connected to the transverse screw rod, and the end of the transverse screw rod is rotatably connected to the side of the fixed beam.

[0011] As a preferred technical solution of the present invention, the elastic clamping assembly includes a second fixed seat fixedly connected to the suspension plate, the second fixed seat is slidably connected to a clamping slide rod, the end of the clamping slide rod close to the center of the horseshoe-shaped fixed seat is fixedly connected to a second clamping plate, a clamping spring is arranged between the second clamping plate and the second fixed seat, and a pull ring is arranged at the end of the clamping slide rod away from the horseshoe-shaped fixed seat.

[0012] The present invention has the following benefits:

[0013] By setting up four clamping gears 16 and the C-shaped gear ring 18, the welding head 32 can rotate around the metal pipe to complete the welding process, and the C-shaped rotating seat 17 and the horseshoe-shaped fixing seat 1 are both provided with openings to facilitate the fixing of the metal pipe. Compared with the traditional manipulator control, the welding machine of the present application only needs to control the drive motor 24 to work, and the overall control components are fewer, thereby greatly reducing the overall manufacturing cost and operating cost. In addition, the rotation is achieved by the cooperation of four clamping gears 16 and the C-shaped gear ring 18. The entire mechanical structure is simple and has better stability. The size and weight of the entire welding machine are also smaller, and it can be directly installed on the fixed water inlet pipe. That is to say, the present application can work at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a front view of a metal pipe welding machine.

[0016] Figure 2 This is an axonometric view of a metal pipe welding machine.

[0017] Figure 3 The figure is a schematic diagram of the structure of a clamping mechanism in a metal pipe welding machine.

[0018] Figure 4 for Figure 3 Left view of .

[0019] Figure 5 The figure is a structural diagram of a welding mechanism in a metal pipe welding machine.

[0020] Figure 6 The figure is a schematic diagram of the structure of a rotary drive assembly in a metal pipe welding machine.

[0021] Figure 7 This is a structural schematic diagram of a metal pipe welding machine in which a C-shaped rotating seat rotates downward.

[0022] Figure 8 The figure is a schematic diagram of the structure of a welding assembly in a metal pipe welding machine.

[0023] Figure 9 This is a schematic diagram of the structure of the clamping gear and C-shaped gear ring in a metal pipe welding machine.

[0024] Figure: 1, horseshoe-shaped fixed seat; 2, welding mechanism; 3, clamping mechanism; 4, extended bracket; 5, fixed beam; 6, transverse screw; 7, fixed plate; 8, hanging plate; 9, second clamping piece; 10, clamping spring; 11, second fixed seat; 12, clamping slide; 13, pull ring; 14, elastic clamping assembly; 15, rotating shaft; 16, clamping gear; 17, C-shaped rotating seat; 18, C-shaped ring gear; 19, welding assembly; 20, driven Pulley; 21. Tensioner; 22. Synchronous belt; 23. Drive pulley; 24. Drive motor; 25. Rotary drive assembly; 26. First clamping plate; 27. Clamping screw; 28. First fixed seat; 29. Rotating wheel; 30. Fixed clamping assembly; 31. Bracket; 32. Welding head; 33. Lifting plate; 34. Telescopic rod; 35. Telescopic sleeve; 36. Lifting screw; 37. Top plate; 38. Auxiliary bracket; 39. Ball head; 40. Slide groove. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0026] In one embodiment, see Figure 1-Figure 5 A metal pipe welding machine includes a horseshoe-shaped fixing base 1, which has a horseshoe-shaped structure, an opening on one side for clamping the metal pipe, and a circular cavity provided inside, and further includes a clamping mechanism 3 and a welding mechanism 2;

[0027] The clamping mechanism 3 includes an extension bracket 4 provided on the front and rear sides of the upper end of the horseshoe-shaped fixed base 1. The extension bracket 4 extends to the right side. A front-to-back fixed beam 5 is provided on the right side of the extension bracket 4. The front and rear ends of the lower surface of the fixed beam 5 are fixedly connected to the upper end of a vertically arranged suspension plate 8. The lower end of the suspension plate 8 is provided with an elastic clamping component 14. The front and rear elastic clamping components 14 fix the left-right metal tube;

[0028] The welding mechanism 2 includes four rotating shafts 15 arranged on the right side of the horseshoe-shaped fixed base 1, the central angle of two adjacent rotating shafts 15 is less than 120°, the four rotating shafts 15 are symmetrically arranged front and back, the central angle of the lower opening of the horseshoe-shaped fixed base 1 is 110°, and the central angle of the two rotating shafts 15 at the bottom of the horseshoe-shaped fixed base 1 is 115°. A clamping gear 16 is fixedly connected to the right end of the rotating shaft 15, and a C-shaped rotating base 17 is provided on the right side of the horseshoe-shaped fixed base 1. The C-shaped rotating base 1 7 is arranged parallel to the horseshoe-shaped fixed base 1, and a welding assembly 19 is provided in the middle of the C-shaped rotating base 17. The welding assembly 19 performs welding processing on the metal tube. A C-shaped ring gear 18 is provided on the outer side of the C-shaped rotating base 17. The C-shaped ring gear 18 is meshed and connected with the clamping gear 16, and the central angle between the C-shaped ring gear 18 and the C-shaped rotating base 17 is 110°. Therefore, at least three clamping gears 16 are meshed and connected with the C-shaped ring gear 18, thereby fixing the C-shaped ring gear 18 through the clamping gear 16.

[0029] In one embodiment of the present invention, see Figure 6 A rotation drive assembly 25 is provided on the upper left side of the horseshoe-shaped fixing seat 1, and the rotation drive assembly 25 drives the two rotating shafts 15 above to rotate synchronously. A fixed clamping assembly 30 is provided at the front and rear ends of the left side of the horseshoe-shaped fixing seat 1. The fixed clamping assembly 30 is located on the front and rear sides of the left metal pipe, so that the metal pipe on the left is fixed by the fixed clamping assembly 30. The rotation drive assembly 25 includes a driven pulley 20 arranged at the left end of the rotating shaft 15, and a tensioner 21 is arranged on the top of the horseshoe-shaped fixed seat 1, and a driving motor 24 is arranged at the upper end of the left side of the horseshoe-shaped fixed seat 1. The output shaft of the driving motor 24 is fixedly connected to the driving pulley 23, and the driving pulley 23 drives the tensioner 21 and the driven pulley 20 to rotate through the synchronous belt 22. Since the tensioner 21 tightens the synchronous belt 22, the synchronous belt 22 can stably drive the two driven pulleys 20 to rotate, thereby making the front and rear rotating shafts 15 rotate synchronously. The driving motor 24 adopts a servo motor or a stepper motor, so that the C-shaped rotating seat 17 can rotate with higher precision. The fixed clamping mechanism 3 is disposed on the left side of the horseshoe-shaped fixing base 1 and includes a first fixing base 28 fixedly connected to the horseshoe-shaped fixing base 1. A clamping screw 27 arranged in a front-to-rear direction is threadedly connected to the middle portion of the first fixing base 28. The end of the clamping screw 27 near the center of the horseshoe-shaped fixing base 1 is rotatably connected to a first clamping piece 26, and the end of the clamping screw 27 away from the center of the horseshoe-shaped fixing base 1 is provided with a rotating wheel 29. The side of the first clamping piece 26 near the center of the horseshoe-shaped fixing base 1 is an arcuate surface. When the clamping screw 27 is rotated, the first clamping piece 26 can be pressed against the front and rear sides of the metal pipe, thereby completing the metal pipe fixation process on the left side through the two first clamping pieces 26.

[0030] In one embodiment of the present invention, see Figure 8 The welding assembly 19 includes brackets 31 mounted on the front and rear sides of the C-shaped rotating base 17. The ends of the brackets 31 are fixedly connected to the front and rear ends of a top plate 37. A lifting screw 36 is threadedly connected to the middle portion of the top plate 37. The end of the lifting screw 36 near the center of the horseshoe-shaped fixed base 1 is rotatably connected to a lifting plate 33. A welding head 32 is mounted on the side of the lifting plate 33 near the center of the horseshoe-shaped fixed base 1. Telescopic sleeves 35 fixedly connected to the top plate 37 are mounted on the front and rear sides of the lifting screw 36. The telescopic sleeves 35 are slidably connected to a telescopic rod 34, which is fixedly connected to the lifting plate 33. The welding head 32 is a conventional arc welding head 32, which is used to weld the ends of the metal pipe.

[0031] In one embodiment of the present invention, see Figure 7 and Figure 9 Since the clamping gear 16 can only limit the up and down and front and back positions of the C-shaped rotating seat 17, in order to prevent the C-shaped rotating seat 17 from moving left and right, an auxiliary bracket 38 is provided on the right side of the horseshoe-shaped fixed seat 1. The auxiliary bracket 38 is a C-shaped structure sleeved on the outside of the C-shaped rotating seat 17, and a slide groove 40 concentric with the C-shaped rotating seat 17 is provided on the left and right sides of the C-shaped rotating seat 17. Ball heads 39 are provided on both sides of the auxiliary bracket 38. The ball heads 39 are tightly pressed against the inside of the slide groove 40, so that the limiting effect of the C-shaped rotating seat 17 is achieved by the ball head 39 sliding inside the slide groove 40.

[0032] In one embodiment of the present invention, see Figure 2 and Figure 3 The front and rear ends of the fixed crossbeam 5 are slidably connected to the extension bracket 4, and the right end of the extension bracket 4 is fixedly connected to the front and rear ends of the fixed plate 7. The middle part of the fixed plate 7 is threadedly connected to the middle part of the transverse screw 6 arranged in a left-right direction. The left end of the transverse screw 6 is rotatably connected to the right side of the fixed plate 7, and the fixed crossbeam 5 is driven to move left and right through the transverse screw 6. The elastic clamping assembly 14 includes a second fixed seat 11 arranged at the lower end of the hanging plate 8, the second fixed seat 11 is located on the left side of the hanging plate 8, and a clamping slide 12 arranged in a front-back direction is slidably connected to the middle part of the second fixed seat 11. The end of the clamping slide 12 close to the center of the horseshoe-shaped fixed seat 1 is fixedly connected to the second clamping piece 9, a clamping spring 10 is arranged between the second clamping piece 9 and the second fixed seat 11, and a pull ring 13 is provided at the end of the clamping slide 12 away from the horseshoe-shaped fixed seat 1. The clamping spring 10 pushes the second clamping piece 9 to move toward the center of the horseshoe-shaped fixing seat 1, so that the second clamping piece 9 can be pressed tightly against the outside of the metal tube through the clamping spring 10, and the second clamping piece 9 is also a curved surface structure like the first clamping piece 26, so that the first clamping piece 26 and the second clamping piece 9 can better fit the outer wall of the metal tube.

[0033] During the implementation of this embodiment, when installing the entire welding machine, the three clamping gears 16 are first installed, and the C-shaped rotating seat 17 is rotated so that the C-shaped rotating seat 17 is screwed into the interior of the auxiliary bracket 38. After the C-shaped rotating seat 17 is installed, the fourth clamping gear 16 is fixed, thereby completing the installation process of the entire welding machine.

[0034] If the size of the metal pipe to be welded is large, it is necessary to cut a bevel at the end of the metal pipe to form a welding groove to improve the subsequent welding strength. The horseshoe-shaped fixing seat 1 is placed on the metal pipe on the left from top to bottom by using the gripper installed at the upper end of the horseshoe-shaped fixing seat 1. The clamping screws 27 on the front and rear sides are rotated so that the two first clamping pieces 26 on the front and rear sides fix the metal pipe and keep the metal pipe on the left side in the center position of the horseshoe-shaped fixing seat 1. The second clamping pieces 9 are separated and the metal pipe on the right is placed between the two second clamping pieces 9. Under the action of the clamping spring 10, the second clamping piece 9 is pressed against the outside of the metal pipe. The transverse screw 6 is rotated to move the metal pipe on the right to the left. The ends of the metal pipes on the left and right sides are pressed against each other. At this time, the fixing process of the two metal pipes is completed.

[0035] The lifting screw rod 36 is rotated to make the welding head 32 move downward and approach the metal pipe. When the distance between the outer side of the metal pipe and the welding head 32 meets the welding requirements, the rotary drive motor 24 is started. The rotary drive motor 24 rotates the clamping gear 16 through the belt drive. The cooperation of the clamping gear 16 and the C-shaped gear ring 18 realizes the rotation of the C-shaped rotating seat 17, so that the welding head 32 rotates around the outside of the metal pipe. The welding head 32 is started and rotates around the metal pipe for one circle, thereby completing the welding process of the two metal pipe ends through the welding head 32, and when the notch of the C-shaped rotating seat 17 rotates to the downward state, the notch of the C-shaped rotating seat 17 and the horseshoe-shaped fixed seat 1 are overlapped. At this time, the clamping screw rod 27 is loosened, the first clamping piece 26 is loosened from the metal pipe on the left, and the welding machine is pulled out upward, thereby disengaging the welding machine from the metal pipe.

[0036] The present invention is applicable to a metal pipe welding machine. By setting the cooperation of four clamping gears 16 and C-shaped gear ring 18, the welding head 32 can rotate around the metal pipe to complete the welding process, and the C-shaped rotating seat 17 and the horseshoe-shaped fixing seat 1 are both provided with openings for fixing the metal pipe. Compared with the traditional manipulator control, the welding machine of the present application only needs to control the drive motor 24 to work, and the overall control components are fewer, thereby greatly reducing the overall manufacturing cost and operating cost. In addition, the rotation is achieved by the cooperation of four clamping gears 16 and C-shaped gear ring 18. The whole mechanical structure is simple and has better stability. The volume and weight of the whole welding machine are also smaller, and it can be directly installed on the fixed water inlet pipe. That is to say, the present application can work at the construction site.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

Claims

1. A metal pipe welding machine, characterized in that: It includes a horseshoe-shaped fixing seat, a welding mechanism and a clamping mechanism; The clamping mechanism includes an extending bracket fixedly connected to the horseshoe-shaped fixing seat, a fixed beam is provided on the extending bracket, a hanging plate is provided at the end of the fixed beam, and an elastic clamping assembly for fixing the metal pipe is provided at the end of the hanging plate away from the fixed beam; The welding mechanism includes four rotating shafts arranged on the side of the horseshoe-shaped fixed seat close to the clamping mechanism, the central angle of two adjacent rotating shafts is less than 120°, the ends of the rotating shafts are fixedly connected to the clamping gears, a C-shaped rotating seat is provided on the side of the horseshoe-shaped fixed seat close to the clamping mechanism, a welding assembly for welding metal pipes is provided on the side of the C-shaped rotating seat, a C-shaped gear ring meshing with the clamping gear is provided on the outside of the C-shaped rotating seat, and the central angle corresponding to the opening of the C-shaped rotating seat is less than 120°.

2. A metal pipe welding machine according to claim 1, characterized in that: A rotation drive assembly for driving two adjacent rotating shafts to rotate synchronously is provided on one side of the horseshoe-shaped fixing seat away from the C-shaped rotating seat, and fixed clamping assemblies for fixing the metal pipe are provided on both sides of the horseshoe-shaped fixing seat.

3. The metal pipe welding machine according to claim 2, characterized in that: The rotary drive assembly includes a driven pulley arranged at one end of the rotating shaft away from the clamping gear, a driving motor is arranged on the side of the horseshoe-shaped fixed seat, the output shaft of the driving motor is fixedly connected to the driving pulley, the driving pulley is connected to the driven pulley through a synchronous belt, and a tensioner that cooperates with the synchronous belt is rotatably connected to the horseshoe-shaped fixed seat.

4. The metal pipe welding machine according to claim 2, characterized in that: The fixed clamping assembly includes a first fixing seat fixedly connected to the horseshoe-shaped fixing seat, the first fixing seat is threadedly connected to a clamping screw, the end of the clamping screw close to the center of the horseshoe-shaped fixing seat is rotatably connected to the first clamping piece, and the end of the clamping screw away from the center of the horseshoe-shaped fixing seat is provided with a rotating wheel.

5. The metal pipe welding machine according to claim 1, characterized in that: The welding assembly includes a bracket fixedly connected to a C-shaped rotating seat, the bracket is fixedly connected to a top plate, the middle part of the top plate is threadedly connected to a lifting screw, one end of the lifting screw close to the center of the horseshoe-shaped fixed seat is rotatably connected to a lifting plate, and a welding head is provided on the side of the lifting plate close to the center of the horseshoe-shaped fixed seat.

6. The metal pipe welding machine according to claim 5, characterized in that: Telescopic sleeves are provided on both sides of the top plate, and the telescopic sleeves are slidably connected to telescopic rods fixedly connected to the lifting plate.

7. The metal pipe welding machine according to claim 1, characterized in that: The two sides of the C-shaped rotating seat are provided with sliding grooves arranged concentrically with the C-shaped rotating seat, the side of the horseshoe-shaped fixed seat is provided with an auxiliary bracket, and the two sides of the auxiliary bracket are provided with ball heads that match the sliding grooves.

8. The metal pipe welding machine according to claim 1, characterized in that: The two ends of the fixed beam are slidably connected to the extension bracket, and the end of the extension bracket is provided with a fixed plate. The middle part of the fixed plate is threadedly connected to the transverse screw rod, and the end of the transverse screw rod is rotatably connected to the side of the fixed beam.

9. The metal pipe welding machine according to claim 1, characterized in that: The elastic clamping assembly includes a second fixed seat fixedly connected to the suspension plate, the second fixed seat is slidably connected to a clamping slide rod, the end of the clamping slide rod close to the center of the horseshoe-shaped fixed seat is fixedly connected to a second clamping piece, a clamping spring is arranged between the second clamping piece and the second fixed seat, and a pull ring is arranged at the end of the clamping slide rod away from the horseshoe-shaped fixed seat.

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