Metal pipe welding equipment capable of automatically butting metal pipes

Abstract

The invention relates to the technical field of metal workpiece welding, in particular to metal pipe welding equipment capable of automatically butting metal pipes. The metal pipe welding equipment comprises a machine body, a clamping mechanism is arranged at the top of the machine body, a telescopic piece is arranged on the side, close to the clamping mechanism, of the machine body, and the telescopic end of the telescopic piece is fixedly connected with an electric welding gun; the sleeve shell is provided with grinding discs which are symmetrically arranged, the grinding discs are rotationally connected to the sleeve shell, and the grinding discs are connected to a power piece. The bidirectional grinding disc is arranged at the butt joint position of the metal pipes, the butt joint face of the metal pipes can be automatically ground, an external dust remover is connected with the exhaust pipe, dust in a grinding area and around the grinding area can be collected in an exhaust mode, the cone is arranged to prevent the dust from diffusing into air, and the collecting efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal workpiece welding, and particularly to a metal pipe welding device capable of automatically butt - jointing metal pipes. Background Art

[0002] Metal pipes are a commonly used industrial material, widely used in fields such as construction, mechanical manufacturing, oil and gas transportation, etc. During the manufacturing process of metal pipes, it is often necessary to butt - weld two metal pipes. When using existing welding equipment to weld metal pipes, the two metal pipes are respectively fixed on the left - and right - hand fixing mechanisms of the welding equipment, and then the fixing mechanisms are controlled to move to drive the metal pipes to automatically butt - joint with each other and then be welded. Usually, during the manufacturing process of metal pipes, the butt - joint surfaces of metal pipes often have unevenness due to reasons such as cutting or wear. When welding metal pipes, the uneven end surfaces of the metal pipes will affect the welding quality of the metal pipes. The current method is that people use a grinder to first grind the end of one metal pipe. After grinding it flat, they use the grinder to grind the end of the other metal pipe. After finishing grinding, welding treatment is carried out.

[0003] In the prior art, people need to use a grinder to grind the ends of metal pipes in sequence, increasing the time cost. Therefore, a metal pipe welding device capable of automatically butt - jointing metal pipes is designed to overcome the above - mentioned problems. Summary of the Invention

[0004] The present invention provides a metal pipe welding device capable of automatically butt - jointing metal pipes, including a machine body. A clamping mechanism is provided at the top of the machine body. A telescopic member is provided on one side of the machine body close to the clamping mechanism. The telescopic end of the telescopic member is fixedly connected to an electric welding gun. A fixed seat is provided at the top of the machine body. A sleeve is provided on the fixed seat. Symmetrically arranged grinding discs are provided on the sleeve. The grinding discs are rotatably connected to the sleeve, and the grinding discs are connected to a power member.

[0005] Optionally, a collection cavity is opened inside the sleeve. An air extraction channel is opened in the grinding disc. The air extraction channel and the collection cavity are in communication with each other. A dust suction port is provided on the grinding disc, and the dust suction port is located at the abrasive layer. An air extraction pipe is provided inside the fixed seat. One end of the air extraction pipe vertically extends into the collection cavity and is in communication with the collection cavity. The other end of the air extraction pipe bends out of the side of the fixed seat through the inside of the fixed seat and is exposed to the outside.

[0006] Optionally, it further includes a cone. The cone is provided on the side where the grinding discs are away from each other. The grinding discs are fixedly connected to the cone. The inside of the cone is a hollow structure. A plurality of through - holes are opened on the cone. An air extraction port is provided on the side of the grinding disc close to the cone. The air extraction ports are respectively in communication with the cone and the air extraction channel.

[0007] Optionally, it further includes a pulling frame, which is fixedly connected to the cone. The pulling frame is slidably connected to the grinding disc. On the side where the pulling frames are close to each other, there is an annular column, and the annular column is fixedly connected to the pulling frame.

[0008] Optionally, it further includes a cooling pipe, which is fixed in the dust suction port. The inside of the cooling pipe is hollow and communicates with the dust suction port. A cooling port is opened on the cooling pipe. An annular air delivery channel is arranged inside the cooling pipe, and the annular air delivery channel communicates with the cooling port. On the side of the cooling pipe away from the cooling port, there is an air delivery pipe, and the air delivery pipe communicates with the annular air delivery channel. The extending end of the air delivery pipe extends towards the side away from the housing, and the air delivery pipe passes through the grinding disc.

[0009] Optionally, it further includes an installation body, which is arranged inside the housing and fixedly connected to the inside of the housing. Symmetrically arranged sliding columns are provided on the installation body. The sliding columns are slidably connected inside the installation body. At the ends where the sliding columns are away from each other, a support disc is fixedly connected, and a first spring is provided on the sliding columns.

[0010] Optionally, it further includes a first wire pulley, which is rotatably connected inside the installation body. A first pull rope is provided on the first wire pulley. One end of the first pull rope horizontally penetrates through the sliding column, and the other end of the first pull rope is fixedly connected to a lifting column. The lifting column extends upward through the installation body and the housing, and the extending end of the lifting column is arranged at a power source. The lifting column is slidably connected to the installation body and the housing respectively.

[0011] Optionally, it further includes support arc blocks, which are respectively arranged on the four sides of the support disc. The support arc blocks are slidably connected to the support disc. Guide rods are provided on the support arc blocks. The guide rods are slidably connected to the support arc blocks and fixedly connected to the support disc. Second springs are provided on the guide rods.

[0012] Optionally, the support arc blocks are fixedly connected with a second pull rope, and the second pull rope penetrates along the longitudinal direction of the guide rod. On the side of the second pull rope away from the support arc block, there is a second wire pulley, which is rotatably connected to the support disc. The second pull rope bypasses the second wire pulley, and the end of the second pull rope is fixedly connected to the first pull rope.

[0013] Optionally, a connecting block is fixedly connected to the lifting column, and symmetrically arranged inclined rods are provided on the connecting block.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention sets a two-way grinding disc at the butt joint position of the metal pipes, which can automatically grind and process the butt joint surfaces of the metal pipes. And by connecting the external dust collector with the air extraction pipe, it can collect the dust in and around the grinding area by means of air extraction. By setting the cone to block the diffusion of dust into the air, the collection efficiency is improved.

[0015] 2. The present invention can not only achieve the purpose of adsorbing dust by means of dust collection by a dust collector, but also can automatically blow out cold air for automatic cooling in cooperation with an air delivery pipe, an annular air delivery channel and a cooling port. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0017] Figure 2 It is a partial schematic three-dimensional structure diagram of the present invention.

[0018] Figure 3 It is a partial schematic cross-sectional view of the three-dimensional structure of the present invention.

[0019] Figure 4 For the present invention Figure 3 The enlarged partial three-dimensional structure diagram at position A in it.

[0020] Figure 5 For the present invention Figure 3 The enlarged partial three-dimensional structure diagram at position B in it.

[0021] Figure 6 It is a schematic three-dimensional structure diagram of the cooling pipe and the air delivery pipe of the present invention.

[0022] Figure 7 It is a schematic three-dimensional structure diagram of components such as a wire guide wheel 1 and a pull rope 2 of the present invention.

[0023] Reference numerals in the drawings: 1 - machine body, 2 - clamping mechanism, 3 - telescopic member, 4 - electric welding gun, 5 - grinding disc, 6 - fixed seat, 7 - housing, 8 - servo motor, 9 - small gear, 10 - large gear, 11 - collection cavity, 12 - air extraction channel, 13 - dust suction port, 14 - air extraction pipe, 15 - cooling pipe, 16 - inclined surface, 161 - flat straight surface, 17 - cooling port, 18 - annular air delivery channel, 19 - air delivery pipe, 20 - air extraction port, 21 - cone, 22 - pulling frame, 23 - annular column, 24 - installation body, 25 - sliding column, 26 - first spring, 28 - support disc, 29 - support arc block, 30 - guide rod, 31 - second spring, 32 - first pull rope, 33 - wire guide wheel 1, 35 - second pull rope, 36 - wire guide wheel 2, 37 - lifting column, 38 - connecting block, 39 - inclined rod, 40 - moving mechanism, 41 - adjusting mechanism, 42 - rotating mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following is only a preferred embodiment of the present invention, and does not limit the protection scope of the present invention accordingly.

[0025] Embodiment 1: A metal pipe welding device capable of automatically butt-jointing metal pipes, as Figure 1 - Figure 2As shown, it includes a body 1, a clamping mechanism 2 is provided on the top of the body 1, and the clamping mechanism 2 can clamp metal pipes of different diameters. The clamping mechanism 2 adopts an electric control design, and the clamping mechanism 2 can clamp the metal pipe through electric control. Moreover, according to the requirements of welding, the clamping mechanism 2 can also be controlled by electric control to drive the metal pipe to rotate in a circle with the axis as the center, so as to cooperate with the electric welding gun 4 to complete the welding operation. The clamping mechanism 2 is a prior art, and the specific internal structure of the clamping mechanism 2 is not described in detail.

[0026] A telescopic member 3 is provided on one side of the body 1 close to the clamping mechanism 2, and a welding gun 4 is arranged on the telescopic end of the telescopic member 3. The welding gun 4 can be driven to move forward and backward by the telescopic member 3. The welding gun 4 moves forward and close to the welding position to start welding operation. After the welding operation is completed, the welding gun 4 can be driven to move backward and away from the welding position by the telescopic member 3. The moving setting of the welding gun 4 belongs to the conventional setting, and this scheme will not be elaborated in detail.

[0027] As described in the background technology, before butt welding two metal pipes, in order to improve the welding quality, it is usually necessary to grind the butt surfaces of the metal pipes so that they are more firm during subsequent welding. The method adopted in the prior art is to use a grinder to grind the butt surfaces of the metal pipes in turn, and then fix them on the welding equipment after grinding to start the welding operation, which increases the time cost. Therefore, this embodiment proposes the following scheme: a grinding processing function is set on the welding equipment. According to the characteristics of the butt joint of two metal pipes, this scheme adopts a two-way grinding method, and in the process of butt jointing the two metal pipes, two-way grinding is used to grind the two butt surfaces at the same time, and then after the grinding process is completed, the grinding processing function is automatically exited, and the two metal pipes continue to be butt jointed, so a lot of time cost can be saved. A fixed seat 6 is provided on the top of the body 1, and the fixed seat 6 is set on the body 1 through a power mechanism. The power mechanism can control the fixed seat 6 to move forward and backward, and a sleeve shell 7 is provided on the fixed seat 6, and a symmetrical After the grinding disc 5 is in the butt joint position of the two metal tubes, the grinding disc 5 starts to grind the butt joint surface of the two metal tubes synchronously. After the grinding is completed, the power mechanism controls the grinding disc 5 to move forward and exit the butt joint position of the two metal tubes. At the same time, the power mechanism and the telescopic member can synchronously control the extension of the telescopic member through connection, so as to promote the electric welding gun 4 to advance to the welding position. After the grinding disc 5 exits the two metal tubes, the power source continues to drive the metal tubes to move and dock. A circular protrusion is set on the side surface away from each other, and the circular protrusion is an abrasive layer for grinding. The grinding disc 5 is rotatably connected to the shell 7, and the grinding disc 5 is connected to a power member. The power member is used to drive the grinding disc 5 to rotate and grind.

[0028] likeFigure 2 As shown in the figure, the power component includes a servo motor 8, which is fixedly connected to a fixed seat 6. The output shaft of the servo motor 8 is connected to a pinion 9, and the pinion 9 meshes with a large gear 10. The large gear 10 is fixedly connected to the edge of the grinding disc 5. By starting the servo motor 8, the pinion 9 and the large gear 10 are driven to rotate, and the large gear 10 drives the grinding disc 5 to rotate, so that the abrasive layer grinds the butt joint surface of the metal pipe.

[0029] Example 2: On the basis of Example 1, as Figure 3 shown in the figure, during the grinding process, a large amount of dust will be generated. To avoid the dust flying everywhere and affecting the subsequent welding operation, the following scheme is set to recycle the dust:

[0030] A collection cavity 11 is opened inside the casing 7, and an air extraction channel 12 is opened in the grinding disc 5. The air extraction channel 12 is communicated with the collection cavity 11. A dense dust suction port 13 is arranged on the grinding disc 5, and the dust suction port 13 is located at the abrasive layer. By inhaling air through the dust suction port 13, the dust generated during grinding can be inhaled into the collection cavity 11;

[0031] Since the dust suction port 13 is a hollow structure for dust suction, and the grinding disc 5 uses rotary grinding, the distribution of the dust suction port 13 is extremely crucial. A relatively simple and fast way in the process operation is to directly arrange the dust suction ports 13 at equal intervals in an array along the circumferential direction of the abrasive layer. The dust suction ports 13 in a circle form a circle concentric with the abrasive layer. This setting is feasible, but there will be certain defects. Since the above-mentioned dust suction port 13 is a hollow structure, during grinding, the hollow position cannot play a grinding effect on the butt joint surface of the metal pipe, but there will be a "non-grinding surface", that is, the surface that is not ground, which will greatly reduce the grinding effect. And under the two conditions of "the grinding disc 5 rotates at a high speed" and "the dust suction ports 13 in a circle form a circle", circular "non-grinding surfaces" will be generated on the butt joint surface of the metal pipe. The more the number of circles of the dust suction ports 13 is set, the more "non-grinding surfaces" there will be, so the grinding function of the butt joint surface of the metal pipe will fail. Therefore, in this scheme, the dust suction ports 13 are arranged in a staggered distribution manner, and when the adjacent dust suction ports 13 rotate, they can cover each other's "non-grinding surfaces" to make the "non-grinding surfaces" disappear;

[0032] An air extraction pipe 14 is arranged inside the fixed seat 6. One end of the air extraction pipe 14 vertically extends into the collection cavity 11 and is communicated with the collection cavity 11. The other end of the air extraction pipe 14 bends out of the fixed seat 6 from the side of the fixed seat 6 through the inside of the fixed seat 6 and is exposed to the outside. The end of the air extraction pipe 14 exposed to the outside is connected to an external dust collector. The external dust collector inhales air and discharges the dust in the collection cavity 11 through the lower end of the air extraction pipe 14 for collection. Therefore, the dust can be automatically recycled during the grinding process.

[0033] Due to the special position of the dust suction port 13, the docking surface of the dust suction port 13 contacts the metal pipe. Initially, the docking surface of the metal pipe may be uneven. When the dust suction port 13 contacts the uneven surface, the dust suction port 13 is not fully enclosed. Therefore, during the rotary grinding process of the grinding disc 5, the dust generated will be sucked into the collection cavity 11 for collection. After the docking surface of the metal pipe is ground smoother and smoother, the docking surface of the metal pipe may directly block the dust suction port 13 completely. Therefore, the dust ground out subsequently may not be sucked into the collection by the dust suction port 13, and a large amount of dust will accumulate around the grinding area of the grinding disc 5. Therefore, an air extraction port 20 is provided on the grinding disc 5. The air extraction port 20 is arranged along the periphery of the abrasive layer. After the metal pipe is attached to the abrasive layer, the air extraction port 20 is located around the docking surface of the metal pipe. Since the air extraction port 20 is respectively communicated with the cone 21 and the air extraction channel 12, during the air suction process, the air extraction port 20 can recover the dust accumulated around the grinding area of the grinding disc 5;

[0034] In addition, since the grinding disc 5 adopts a rotary grinding method, rotation will generate centrifugal force. Therefore, the dust accumulated around the grinding area of the grinding disc 5 is easily thrown outwards by the centrifugal force and dispersed into the air. To avoid dust diffusion, a cone 21 is provided at a position of the grinding disc 5 close to the air extraction port 20. The small-diameter cone opening of the cone 21 extends away from the air extraction port 20. The small-diameter cone opening of the cone 21 is close to the outer diameter of the metal pipe. The cone 21 is designed in a conical shape, which can guide the dust accumulated around the grinding area of the grinding disc 5 to the small-diameter cone opening of the cone 21. When the dust is thrown away, it can reduce the diffusion of dust into the air from the gap between the cone 21 and the metal pipe. The large-diameter cone opening of the cone 21 is connected to the non-abrasive layer position of the grinding disc 5 and is communicated with the air extraction port 20. The inside of the cone 21 is a hollow structure, and a plurality of through holes are opened on the cone 21, and the dust can be collected through the through holes;

[0035] It should be particularly noted that:

[0036] The cone 21 is made of an elastic material. The elastic material is arranged so that when the grinding disc 5 withdraws from the docking position of the two metal pipes after grinding, the cone 21 can be pressed towards the side close to each other, so that the cone 21 is flattened to be flush with the abrasive layer. In this way, when the grinding disc 5 withdraws, it will not be blocked by the structure of the cone 21 and cannot withdraw smoothly;

[0037] The cone 21 is made of a high-temperature resistant material. Since the temperature in the grinding area is generally very high, the cone 21 made of a high-temperature resistant material will extend its service life.

[0038] Before withdrawing the grinding disc 5, the cone 21 needs to be retracted, and a pulling frame 22 is provided. The pulling frame 22 is fixedly connected to the cone 21, and the pulling frame 22 is slidably connected to the grinding disc 5. An annular column 23 is provided on the side where the pulling frame 22 is close to each other. The annular column 23 and the pulling frame 22 are fixedly connected. The user can manually pull the annular column 23 to the side where the pulling frame 22 is close to each other, so that the pulling frame 22 moves to the side where the pulling frame 22 is close to each other, thereby driving the cone 21 to be retracted and flush with the abrasive layer, and the grinding disc 5 can be withdrawn smoothly. After withdrawal, the annular column 23 can be loosened, and the cone 21 automatically recovers due to its elastic performance.

[0039] like Figure 3 , Figure 4 and Figure 6 As shown, high temperature will be generated in the grinding area. Therefore, the grinding area needs to be cooled. Therefore, a cooling pipe 15 is provided. The cooling pipe 15 is fixed in the dust suction port 13. The interior of the cooling pipe 15 is hollow and connected to the dust suction port 13. During the air extraction process, dust will be recovered through the cooling pipe 15 and the dust suction port 13. The end surface of the cooling pipe 15 away from the air extraction channel 12 is divided into two parts. One part is a circular flat surface 161, which is flush with the abrasive layer, and the other part is a circular inclined surface 16, which is located outside the inclined surface 16. A cooling port 17 is provided on the cooling pipe 15, and the cooling port 17 is located on the inclined surface 16. The setting of the inclined surface 16 can make a gap between the cooling port 17 and the joint surface of the metal pipe. Therefore, the cold air blown out of the cooling port 17 will cool the grinding area of the metal pipe.

[0040] An annular air supply channel 18 is arranged in the cooling pipe 15, and the annular air supply channel 18 is connected with the cooling port 17. An air supply pipe 19 is arranged on the side of the cooling pipe 15 away from the cooling port 17, and the air supply pipe 19 is connected with the annular air supply channel 18. The extended end of the air supply pipe 19 extends toward the side away from the casing 7, and the air supply pipe 19 passes through the grinding disc 5. The end of the air supply pipe 19 is connected with the external cold air pipe. When exhausting air, dust will not only be sucked into the collecting cavity 11, but also because the exhaust air will also generate negative pressure on the cooling port 17, and then the cold air in the external cold air pipe will be blown out from the cooling port 17 through the air supply pipe 19 and the annular air supply channel 18, so as to achieve the purpose of automatic cooling. Moreover, as the metal pipe joint surface becomes smoother and the straight surface 161 and the metal pipe joint surface become closer and closer, the air entering from the gap between the straight surface 161 and the metal pipe joint surface becomes less and less. Therefore, more and more cold air will be sucked in when exhausting air, and the cooling effect will become stronger and stronger.

[0041] In the solution of cooling by pumping in cold air, since water vapor may be generated when cold air meets heat, and the water vapor adheres to the dust. If a large amount of water vapor is generated, it is very likely that the dust will adhere to the side walls due to the water vapor and cannot be pumped out and collected. Therefore, the external dust collector uses electrostatic precipitation. The advantage of electrostatic precipitation is that it can collect the dust with moisture and overcome the problem of wall adhesion.

[0042] During the grinding process, friction will be generated between the grinding disc 5 and the metal pipe, and the friction is likely to cause the metal pipe to move slightly. Therefore, a function of providing support for the hollow position of the metal pipe is set to reduce the probability of its movement:

[0043] The support discs 28 are symmetrically arranged on the sleeve 7. The support discs 28 protrude from the grinding plane. The support discs 28 are circular structures. When the metal pipe is in contact with the grinding plane, the support discs 28 are located in the hollow position inside the metal pipe. Therefore, the support discs 28 can support the inside of the metal pipe and improve its stability;

[0044] Since the support discs 28 protrude from the grinding plane, when the grinding disc 5 is withdrawn, the support discs 28 also need to be moved inside the sleeve 7 to prevent the setting of the support discs 28 from affecting the withdrawal of the grinding disc 5. Therefore, sliding columns 25 are arranged on the side where the support discs 28 are close to each other. The sliding columns 25 are provided with mounting bodies 24. The mounting bodies 24 and the sliding columns 25 are slidably connected. The mounting bodies 24 are fixedly connected inside the sleeve 7. A first spring 26 is arranged on the sliding columns 25. The first spring 26 drives the telescopic discs 24 to keep away from each other. The first spring 26 is fixedly connected between the telescopic discs 24 and the inside of the mounting bodies 24. Before the grinding disc 5 is withdrawn, the sliding columns 25 are pulled towards the side close to each other by a pulling member, so that the first spring 26 is compressed. The sliding columns 25 drive the support discs 28 to move into the cavities opened in the mounting bodies 24, and the support discs 28 will not block the withdrawal of the grinding disc 5. After that, after the grinding disc 5 is withdrawn, the sliding columns 25 are released, and the first spring 26 drives the support discs 28 and the sliding columns 25 to reset.

[0045] As Figure 3 shown, the pulling member that provides tension for the sliding columns 25 includes a first wire wheel 33. The first wire wheel 33 is rotatably connected inside the mounting body 24. A first pulling rope 32 is arranged on the first wire wheel 33. One end of the first pulling rope 32 horizontally penetrates the sliding column 25. The other end of the first pulling rope 32 is fixedly connected to a lifting column 37. The lifting column 37 extends upward through the mounting body 24 and the sleeve 7, and the extending end of the lifting column 37 is provided with a power source. The lifting column 37 is slidably connected to the mounting body 24 and the sleeve 7 respectively. The power source can drive the lifting column 37 to move upward. The lifting column 37 pulls the first pulling rope 32, so that the first pulling rope 32 pulls the sliding columns 25 to move towards the side close to each other to provide tension.

[0046] Since the sizes of the hollow spaces inside different metal tubes are also different, how to adjust the diameter of the support plate 28 according to the size of the hollow space inside the metal tube becomes a problem that needs to be considered in this embodiment. The following is a solution:

[0047] Support arc blocks 29 are arranged on four sides of the support plate 28, and the support arc blocks 29 are connected to the support plate 28 in a sliding manner. The peripheries of all the support arc blocks 29 on the same support plate 28 form a circle, which adapts to the hollow position inside the metal tube and supports the metal tube. The support arc blocks 29 replace the supporting function of the support plate 28. All the support arc blocks 29 on the same support plate 28 can be slidably adjusted according to the size of the hollow diameter of the metal tube, and the diameter size of the circle formed by them can be adjusted to adapt to the hollow diameter of the metal tube. Therefore, metal tubes with different inner diameters can be supported, and the application range is wider;

[0048] like Figure 3 and Figure 5 As shown, a guide rod 30 is provided on the support arc block 29, and the guide rod 30 is slidably connected to the support arc block 29. The guide rod 30 is used to guide the support arc block 29, and the guide rod 30 is fixedly connected to the support plate 28;

[0049] like Figure 3 and Figure 5 As shown, a spring 2 31 is provided on the guide rod 30, and the spring 2 31 drives the support arc block 29 to move outward. The spring 2 31 is fixedly connected between the support arc block 29 and the support plate 28. The elastic force of the spring 2 31 can make the support arc block 29 close to the inner wall of the metal tube to provide supporting force. The elastic force of the spring 2 31 is smaller than that of the spring 1 26.

[0050] Since the spring 2 31 causes the support arc block 29 to squeeze the inner wall of the metal tube through elastic force, when the support plate 28 drives the support arc block 29 to move and retract in the direction of the mounting body 24, because the support arc block 29 squeezes the inner wall of the metal tube, the movement of the support arc block 29 will generate friction with the inner wall of the metal tube, which may scrape the inner wall of the metal tube. Therefore, in order to overcome this problem, this solution first retracts the support arc block 29 when pulling the pull rope 1 32, and then drives the support plate 28 and the support arc block 29 to move. The following is a specific implementation plan:

[0051] A pull rope 2 35 is fixedly connected to the support arc block 29. The pull rope 2 35 longitudinally penetrates the guide rod 30. A guide wheel 2 36 is provided on the side of the pull rope 2 35 away from the support arc block 29. The guide wheel 2 36 is rotatably connected to the support plate 28. The guide wheel 2 36 provides support and guidance for the bending part of the pull rope 2 35. The pull rope 2 35 passes around the guide wheel 2 36. The end of the pull rope 2 35 is fixedly connected to the pull rope 1 32 through a connector.

[0052] Since the elastic force of the second spring 31 is less than that of the first spring 26, when the first pull rope 32 is pulled, the second pull rope 35 will be pulled first. The second pull rope 35 then pulls the supporting arc blocks 29 to move closer to each other. After all the supporting arc blocks 29 are close together, the force of pulling the supporting arc blocks 29 is used to push the supporting disk 28 to move towards the side where they approach each other, thereby achieving the purpose of retracting the supporting disk 28 and the supporting arc blocks 29.

[0053] As described above, a power is required to pull the annular column 23 towards the side where they approach each other. In this solution, the power is concentrated on the lifting column 37. The lifting column 37 realizes three functions. First, it retracts the supporting arc blocks 29. Second, it retracts the supporting disk 28 into the installation body 24. Third, it flattens the cone 21 to be flush with the abrasive layer. Therefore, a connecting block 38 is provided on the lifting column 37, and symmetrically arranged inclined rods 39 are provided on the connecting block 38. When the lifting column 37 moves upward, it will drive the connecting block 38 and the inclined rods 39 to move upward. After the inclined rods 39 move upward and contact the annular column 23, the annular column 23 will be pushed by the inclined rods 39 to move towards the side where they approach each other, and then the cone 21 is flattened to be flush with the abrasive layer.

[0054] As Figure 1 shown, the present invention further includes a moving mechanism 40 for pushing and docking the metal pipe from left to right. The moving mechanism 40 is arranged on the side of the machine body 1 away from the clamping mechanism 2. The moving mechanism 40 is automatically controlled by electricity to move. The moving mechanism 40 is a prior art and will not be elaborated in detail;

[0055] An adjusting mechanism 41 is provided on the moving mechanism 40. The adjusting mechanism 41 is composed of an electric control wire winding device, a wire winding wheel, and a rope. The electric control wire winding device around which the rope is wound is arranged below the moving mechanism 40. The wire winding wheel is rotatably connected above the moving mechanism 40. The end of the rope passes around the wire winding wheel and is fixedly connected to the rotating mechanism 42 for clamping the metal pipe. The rotating mechanism 42 is controlled by the electric control wire winding device to move up and down, so that the metal pipe moves up and down, aiming to adjust and dock with another metal pipe;

[0056] A clamping part and a rotating part are provided inside the rotating mechanism 42. The clamping part is used to clamp the metal pipe, and the rotating part aims to rotate the metal pipe from the vertical state to the horizontal state. The metal pipe is vertically placed and fixed in the clamping part, and its placement will be more convenient. After being clamped, the rotating part is controlled by the rotating mechanism 42 to rotate to turn the metal pipe into a horizontal state for docking.

[0057] The above has introduced the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A metal pipe welding device capable of automatically docking metal pipes, comprising a machine body (1). A clamping mechanism (2) is provided at the top of the machine body (1). A telescopic member (3) is provided on one side of the machine body (1) close to the clamping mechanism (2). The telescopic end of the telescopic member (3) is fixedly connected to an electric welding gun (4), and it is characterized in that: A fixed seat (6) is provided at the top of the machine body (1). A sleeve (7) is provided on the fixed seat (6). Symmetrically arranged grinding discs (5) are provided on the sleeve (7). The grinding discs (5) are rotatably connected to the sleeve (7), and the grinding discs (5) are connected to a power member.

2. The metal tube welding equipment capable of automatically butt - welding metal tubes according to claim 1, wherein, A collection cavity (11) is opened inside the sleeve (7). An air extraction channel (12) is opened in the grinding disc (5). The air extraction channel (12) and the collection cavity (11) are interconnected. A dust suction port (13) is provided on the grinding disc (5), and the dust suction port (13) is located at the abrasive layer. An air extraction pipe (14) is provided inside the fixed seat (6). One end of the air extraction pipe (14) vertically extends into the collection cavity (11) and communicates with the collection cavity (11). The other end of the air extraction pipe (14) bends out of the side of the fixed seat (6) through the inside of the fixed seat (6) and is exposed to the outside.

3. The metal tube welding equipment capable of automatically docking metal tubes according to claim 2, characterized in that, It further includes a cone (21), and the cone (21) is arranged on the side where the grinding discs (5) are away from each other. The grinding disc (5) is fixedly connected to the cone (21). The inside of the cone (21) is a hollow structure. A plurality of through holes are opened on the cone (21). An air extraction port (20) is provided on the side of the grinding disc (5) close to the cone (21), and the air extraction port (20) communicates with the cone (21) and the air extraction channel (12) respectively.

4. The metal tube welding equipment capable of automatically docking metal tubes according to claim 3, characterized in that, It further includes a pulling frame (22), and the pulling frame (22) is fixedly connected to the cone (21). The pulling frame (22) is slidably connected to the grinding disc (5). An annular column (23) is provided on the side where the pulling frames (22) are close to each other, and the annular column (23) is fixedly connected to the pulling frame (22).

5. The metal tube welding equipment capable of automatically docking metal tubes according to claim 4, characterized in that, It further includes a cooling pipe (15), and the cooling pipe (15) is fixed inside the dust suction port (13). The inside of the cooling pipe (15) is hollow and communicates with the dust suction port (13). A cooling port (17) is opened on the cooling pipe (15). An annular air delivery channel (18) is provided inside the cooling pipe (15), and the annular air delivery channel (18) communicates with the cooling port (17). An air delivery pipe (19) is provided on the side of the cooling pipe (15) away from the cooling port (17), and the air delivery pipe (19) communicates with the annular air delivery channel (18). The extending end of the air delivery pipe (19) extends towards the side away from the sleeve (7), and the air delivery pipe (19) passes through the grinding disc (5).

6. The metal tube welding equipment capable of automatically butt - joining metal tubes according to claim 5, wherein, It further includes an installation body (24), and the installation body (24) is arranged inside the sleeve (7). The installation body (24) is fixedly connected to the inside of the sleeve (7). Symmetrically arranged sliding columns (25) are provided on the installation body (24). The sliding columns (25) are slidably connected inside the installation body (24). The ends of the sliding columns (25) away from each other are fixedly connected to a support disc (28), and a first spring (26) is provided on the sliding columns (25).

7. An automatic metal pipe welding device for butt - welding metal pipes according to claim 6, characterized in that, It further includes a first wire pulley (33). The first wire pulley (33) is rotatably connected inside the mounting body (24). A first pulling rope (32) is provided on the first wire pulley (33). One end of the first pulling rope (32) horizontally penetrates through the sliding column (25), and the other end of the first pulling rope (32) is fixedly connected to a lifting column (37). The lifting column (37) extends upward through the mounting body (24) and the housing (7), and the extending end of the lifting column (37) is provided with a power source. The lifting column (37) is slidably connected to the mounting body (24) and the housing (7) respectively.

8. A metal tube welding device capable of automatically docking metal tubes according to claim 7, characterized in that, It further includes a supporting arc block (29). The supporting arc blocks (29) are respectively arranged on the four sides of the supporting disc (28). The supporting arc block (29) is slidably connected to the supporting disc (28). A guide rod (30) is provided on the supporting arc block (29). The guide rod (30) is slidably connected to the supporting arc block (29). The guide rod (30) is fixedly connected to the supporting disc (28). A second spring (31) is provided on the guide rod (30).

9. The metal tube welding equipment capable of automatically butt - jointing metal tubes according to claim 8, wherein, The supporting arc block (29) is fixedly connected with a second pulling rope (35). The second pulling rope (35) penetrates along the longitudinal direction of the guide rod (30). A second wire pulley (36) is provided on the side of the second pulling rope (35) close to and away from the supporting arc block (29). The second wire pulley (36) is rotatably connected to the supporting disc (28). The second pulling rope (35) bypasses the second wire pulley (36), and the end of the second pulling rope (35) is fixedly connected to the first pulling rope (32).

10. A metal tube welding device capable of automatically butt - joining metal tubes according to claim 9, characterized in that, A connecting block (38) is fixedly connected to the lifting column (37). Symmetrically arranged inclined rods (39) are provided on the connecting block (38).

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