Exhaust pipe welding auxiliary tool and welding workbench

Abstract

The application provides an exhaust pipe welding auxiliary tool and a welding workbench, which comprise a carrier disc, a hose, positioning pieces, movable pieces and a traction rope, a through opening is formed in the axial direction of the carrier disc; the hose is fixed on the carrier disc and one end of the hose is wrapped around the outside of the through opening; the positioning pieces are multiple and movably arranged on the side of the carrier disc away from the hose, the multiple positioning pieces are distributed around the axis of the carrier disc and can move away from or close to the axis of the carrier disc, two supporting surfaces are arranged on the positioning piece, and the two supporting surfaces are respectively used for contacting the inner walls of two exhaust pipes which need to be assembled and welded. The exhaust pipe welding auxiliary tool and the welding workbench can be suitable for the butt joint fixing of straight pipes and bent pipes or bent pipes and bent pipes, the two pipe sections do not need to be fixed and then butt jointed, and in the butt joint process, the edges of the pipe sections can be corrected, so that the weld is more regular, and the deviation caused by manual alignment is avoided.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, and in particular to an auxiliary tooling and welding workbench for exhaust pipe welding. Background Technology

[0002] The automotive exhaust system is installed on the chassis of a car and is mainly used to discharge the exhaust gas produced by the engine. It also treats the pollutants and noise carried by the exhaust gas. It is mainly used in light vehicles, microcars, and buses. The automotive exhaust system generally consists of an exhaust manifold, exhaust pipe, catalytic converter, and muffler. The exhaust pipe is a stainless steel pipe that connects the other components and forms a complete exhaust passage. On the vehicle, the exhaust pipe needs to be arranged according to the chassis, which means that during the production process, the exhaust pipe needs to be welded from multiple sections of steel pipe, including the welding of straight pipes and bends, and the welding of bends together.

[0003] For welding straight pipes and bends, special fixtures can be used to fix the exhaust pipe to complete the welding operation. However, existing fixtures can usually only fix different sections of exhaust pipes of a specific size, which means that multiple sets of fixtures need to be prepared to complete the exhaust pipe welding operation of the automotive exhaust system.

[0004] The "Welding Fixture for Automobile Exhaust Pipes" with publication number CN111168308A discloses a fixture for welding straight and curved sections of automobile exhaust pipes. By fixing the straight pipe and adjusting and fixing the curved pipe through an adjustable structure, the straight pipe and curved pipe are fixedly connected to complete the auxiliary welding operation, thereby achieving auxiliary fixing of the straight pipe and different curved pipes.

[0005] Although the above method can be used to assist in the welding and fixing of straight pipes and different bends in the exhaust pipe, the operation is quite cumbersome because it requires fixing the straight pipe and the bend separately and adjusting the position of the bend that connects to the straight pipe. In addition, this method is obviously not suitable for welding and fixing bends between pipes in the automotive exhaust system, and its application is quite limited. Summary of the Invention

[0006] In view of this, the present invention proposes an auxiliary tooling and welding workbench for welding exhaust pipes to solve the problem in the prior art that the same tooling cannot be used to assist in fixing straight pipes and bends or bends of exhaust pipes during welding.

[0007] The technical solution of this invention is implemented as follows:

[0008] On one hand, the present invention provides an auxiliary tooling for welding exhaust pipes, including a carrier plate, a hose, a positioning component, a movable component, and a traction rope, wherein,

[0009] The carrier disk has an opening in the axial direction;

[0010] The hose is fixed to the carrier plate, with one end wrapped around the outside of the opening;

[0011] There are multiple positioning components, all of which are movably disposed on the side of the carrier plate away from the hose. The multiple positioning components are distributed around the axis of the carrier plate and can move away from or close to the axis of the carrier plate. Each positioning component is provided with two support surfaces, which are respectively used to contact the inner walls of the two exhaust pipes to be assembled and welded.

[0012] The movable part is conical, and its axis is on the same straight line as the axis of the carrier disk. Each of the positioning elements is in contact with the conical surface of the movable part. The end of the movable part with the vertex is inserted into the through-hole and can move along the axis of the carrier disk within the through-hole.

[0013] The traction rope is movably installed inside the hose, with one end fixed to the end of the movable part with a vertex, and the other end of the traction rope extends to the outside of the hose for pulling the movable part to move.

[0014] When the moving part moves toward the opening, it pushes each positioning part to move away from the axis of the carrier plate.

[0015] Based on the above technical solutions, preferably, the positioning component includes a connecting block and two elastic blocks, wherein,

[0016] The connecting block is movable on the carrier disk;

[0017] Both elastic blocks are fixed to the connecting block, and both elastic blocks are provided with a support surface.

[0018] Based on the above technical solutions, preferably, it also includes an elastic element, which is disposed on the positioning element and is used to pull the positioning element toward the axis of the carrier disk.

[0019] More preferably, the elastic element is a tension spring, and the number of them is the same as the number of positioning elements. The two ends of the elastic element are respectively fixed to the two positioning elements adjacent to the elastic element.

[0020] Based on the above technical solutions, preferably, it also includes an inner liner tube, which is installed inside the hose, and the traction rope is inserted inside the inner liner tube.

[0021] Based on the above technical solutions, preferably, the carrier disk has multiple movable openings, and the positioning member corresponds to each movable opening, with each positioning member extending into each movable opening.

[0022] On the other hand, the present invention provides a welding workbench, including a workbench body, a pipe groove, a pipe pushing mechanism, a rope pulling assembly, and the aforementioned auxiliary tooling, wherein,

[0023] The tube groove is fixed on the workbench body, and the flexible tube is movably disposed in the tube groove. The tube groove is used to restrict the movement direction of the flexible tube.

[0024] The tube pushing mechanism is fixed on the workbench body and has a movable end. The movable end is fixed to the end of the hose away from the carrier plate. The tube pushing mechanism is used to push the hose to move in the tube groove.

[0025] The pull rope assembly is fixed to the movable end of the push tube mechanism and has a movable pull rope end. The pull rope end is fixed to the end of the traction rope away from the movable part. The pull rope assembly is used to pull the traction rope to move the movable part toward the opening.

[0026] Based on the above technical solutions, preferably, a connector is also included. The connector is fixed on the movable end of the push tube mechanism and fixed to the end of the hose away from the carrier plate. The pull rope assembly is disposed on the connector.

[0027] More preferably, the rope assembly includes a cylinder and a movable plate, wherein,

[0028] The cylinder is fixed to the connector;

[0029] The movable plate is movably mounted on the connector and fixed to the output end of the cylinder. The movable plate is fixed to the end of the traction rope away from the movable part.

[0030] Based on the above technical solutions, preferably, it also includes a gripper, which is set on the worktable body and is used to hold the end of the exhaust pipe near the carrier plate.

[0031] The exhaust pipe welding auxiliary tooling and welding workbench of the present invention have the following advantages over the prior art:

[0032] (1) This tooling can be used for fixing straight pipes and bends or bends and bends, without the need to fix the two pipe sections separately before connecting them. At the same time, during the connection process, the edges of the pipe sections can be corrected, making the weld more regular and avoiding the deviation caused by manual alignment. Compared with the existing technology of fixing the bend and straight pipes separately and then aligning and correcting them, it is obviously simpler and more convenient to use and has a stronger applicability. For welding exhaust pipes of different specifications, it is only necessary to change the displacement distance of the positioning component on the carrier plate.

[0033] (2) The elastic block set on the positioning component can adapt to pipe sections with different inner diameters through elastic deformation. At the same time, the deformable contact avoids deformation or wear of the inner wall of the pipe section during the fixing process, thereby protecting the pipe section and avoiding damage to the exhaust pipe during the processing.

[0034] (3) By setting up an elastic element, the elastic element generates elastic deformation to store energy during the movement of the positioning element. After the tension on the traction rope is released, the elastic element restores its deformation and can pull the positioning element to reset, thereby detaching the positioning element from the inner wall of the pipe section. During the detachment process, mechanical collision with the inner wall of the pipe section is avoided. This further protects the exhaust pipe during the processing and facilitates the removal of the carrier plate and positioning element from the welded exhaust pipe.

[0035] (4) Based on the auxiliary tooling, this welding workbench pushes and retracts the hose through the push pipe mechanism and uses the pull rope assembly to pull the traction rope. There is no need for manual insertion of the hose into the pipe section or manual pulling of the traction rope, which further facilitates the user's alignment and assembly before welding, effectively improves welding efficiency, and saves manpower.

[0036] (5) By setting up clamps, during operation, one end of one pipe section is placed into the clamps and initially fixed by the clamps so that the end of the pipe section is aligned with the carrier plate. This eliminates the need for manual handling of the pipe section while waiting for the carrier plate and hose to enter when the carrier plate and hose are inserted into the pipe section, thus further saving manpower. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a perspective view of the exhaust pipe welding auxiliary tooling of the present invention;

[0039] Figure 2 This is a side view of the exhaust pipe welding auxiliary tooling of the present invention;

[0040] Figure 3 for Figure 2 Sectional view at point AA;

[0041] Figure 4 This is a perspective view of the welding workbench of the present invention;

[0042] Figure 5 This is another perspective view of the welding workbench of the present invention;

[0043] Figure 6 This is a perspective view of the connection between the welding workbench rope assembly and auxiliary tooling of the present invention.

[0044] Figure 7 This is a perspective view showing the connection between the welding workbench rope assembly and auxiliary tooling of the present invention. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0046] like Figure 1-3 As shown, the exhaust pipe welding auxiliary tooling of the present invention includes a carrier plate 1, a hose 2, a positioning component 3, a movable component 4, and a traction rope 5.

[0047] The carrier plate 1 is cylindrical in shape and hollow inside. It has an opening 11 in the axial direction of the carrier plate 1, which extends to two circular surfaces of the carrier plate 1. The diameter of the carrier plate 1 needs to be smaller than the inner diameter of the exhaust pipe to be welded, so that the carrier plate 1 can be placed into the exhaust pipe. Specifically, the diameter of the carrier plate 1 needs to be at least 1 cm smaller than the inner diameter of the exhaust pipe, so as to leave a gap for the carrier plate 1 to move at the bend in the pipe and avoid the carrier plate 1 getting stuck in the exhaust pipe to be welded. In this embodiment, since the carrier plate 1 itself needs to have a certain rigidity and there is a possibility of contact wear with the inner wall of the exhaust pipe, the carrier plate 1 is preferably made of stainless steel to meet the need for continuous repeated use.

[0048] Hose 2 is the part that extends into the bend. Since it needs to contact the inner wall of the exhaust pipe, it will experience some wear. Therefore, it must be made of metal. One end of hose 2 is fixed to the carrier plate 1, and the inner diameter of this end must be larger than the diameter of the port 11 on the carrier plate 1. This end is connected to the port 11 to form a connection. Hose 2 needs to have a certain degree of flexibility and a small amount of expansion and contraction when subjected to axial pressure. Metal braided hose can be used. It should be noted that the length of hose 2 should be greater than the length that needs to be inserted into the bend, so that after hose 2 enters the bend, a part of it still remains outside the bend.

[0049] There are multiple positioning elements 3, all of which are movably disposed on the side of the carrier plate 1 away from the hose 2. That is, each positioning element 3 and the hose 2 are respectively installed on two circular surfaces of the carrier plate 1. Each positioning element 3 is distributed in a ring array around the axis of the carrier plate 1. The positioning elements 3 are movably disposed on the carrier plate 1 and can move toward or away from the axis of the carrier plate 1. After the carrier plate 1 enters the bend, the positioning elements 3 can contact the inner wall of the bend by moving away from the axis of the carrier plate 1. Conversely, the positioning elements 3 can leave the inner wall of the bend by moving toward the axis of the carrier plate 1.

[0050] In order to enable the positioning component 3 to simultaneously contact the inner walls of the two pipe sections to be welded when moving away from the axis of the carrier plate 1, so that the two pipe sections are relatively fixed, a groove is provided on the side of the positioning component 3 away from the axis of the carrier plate 1, and two support surfaces 33 are formed on this side. The two support surfaces 33 are respectively used to contact the inner walls of the two exhaust pipe sections to be assembled and welded. The pipe sections mentioned here can be straight pipes or bends of exhaust pipes.

[0051] In this embodiment, there are six positioning elements 3. By moving the six positioning elements 3 in a direction away from the axis of the carrier plate 1 and contacting the inner walls of the two pipe sections at the same time, the two pipe sections are relatively fixed, and welding operations between the two pipe sections can be carried out.

[0052] The movable part 4 is conical in shape, and its axis is on the same straight line as the axis of the carrier plate 1. Since the movable part 4 is conical, it includes various features of a cone, such as a conical surface, a circular surface, and a vertex. Each of the positioning elements 3 is in contact with the conical surface of the movable part 4. The end of the movable part 4 with the vertex is inserted into the through-hole 11 and can move along the axis of the carrier plate 1 within the through-hole 11. When the movable part 4 moves toward the through-hole 11, the diameter of the part in contact with each positioning element 3 gradually increases, which can push each movable part 4 toward the side away from the axis of the carrier plate 1, thereby pushing the positioning element 3 into close contact with the inner wall of the pipe section, and realizing the relative fixation of the carrier plate 1 and the pipe section.

[0053] It should be noted that since the conical surface of the movable part 4 needs to contact each positioning part 3 and push each positioning part 3 to move, the movable part 4 is preferably made of stainless steel, and the conical surface is polished to reduce mechanical wear between it and the positioning part 3 during movement.

[0054] The traction rope 5 is movably installed inside the hose 2, with one end fixed to the vertex end of the movable part 4. The other end of the traction rope 5 extends to the outside of the hose 2. When the traction rope 5 is pulled, it will move away from the carrier plate 1, and at the same time, it will increase the volume of the movable part 4 entering the opening 11, so that each positioning part 3 can contact and hold the inner wall of the pipe section. It should be noted that the traction rope 5 is preferably a steel rope with low elasticity and high tensile strength to avoid breakage or excessive deformation during the pulling process, which would cause the two pipe sections to be unstable.

[0055] In this embodiment, during the specific welding operation, the carrier plate 1 is first placed into a pipe section, and the carrier plate 1 is fed into the pipe section through the hose 2 until one of the support surfaces 33 on the positioning member 3 moves to the outside of the pipe section, and the other support surface 33 is aligned with the inner wall of the pipe section. Then, another pipe section is fitted over each positioning member 3, and the ends of the two pipe sections are aligned. At this time, the two support surfaces 33 on the positioning member 3 are respectively located inside the two pipe sections. The hose 2 is fixed relative to the pipe section, and the traction rope 5 is pulled. During this process, because the hose 2 and the pipe section are relatively... Once fixed, the movable part 4 will move towards the opening 11, thereby pushing the two support surfaces 33 of the positioning part 3 to contact the two pipe sections respectively. Tightening the traction rope 5 will complete the relative fixation of the two pipe sections to be welded, and welding operations can then be carried out. This tooling can be used for auxiliary welding of exhaust pipes and is suitable for the butt joint fixation between straight pipes and bends or between bends, without the need to fix the two pipe sections separately before butt jointing. At the same time, during the butt jointing process, the edges of the pipe sections can be corrected, making the weld more regular and avoiding the deviation caused by manual alignment.

[0056] During the fixing process, since each positioning component 3 is pushed outward synchronously through the movable component 4, in addition to fixing the two pipe sections relative to each other, it also has the function of aligning the ends of the two pipe sections to be welded. In other words, there is no need for the operator to adjust the two pipe sections to a completely opposite position. Only preliminary alignment is required. This tool can then be used to press the two pipe sections together and accurately correct the weld joints during the fixing process, further reducing the difficulty of use.

[0057] In this embodiment, a sealing plate is fixed on the end of the hose 2 away from the carrier plate 1. The sealing plate seals the end of the hose 2 and can be used to install the hose 2 to other equipment or positions. The traction rope 5 passes through the sealing plate and is pulled by external equipment or mechanism. The hose 2 and the pipe section are relatively fixed in the above welding process. The operator can hold the pipe section or fix the pipe section by clamping components. The hose 2 and the pipe section cannot move relative to each other, which is considered to be relatively fixed.

[0058] In a preferred embodiment, the positioning element 3 includes a connecting block 31 and two elastic blocks 32. The connecting block 31 is movably mounted on the carrier plate 1 and is contacted by the conical surface of the movable element 4. The two elastic blocks 32 are fixed on the connecting block 31, and two supporting surfaces 33 are respectively mounted on the two elastic blocks 32. During use, the two elastic blocks 32 contact the inner walls of the two pipe sections respectively, and adapt to pipe sections with different inner diameters through elastic deformation. At the same time, the deformable contact avoids deformation or wear of the inner wall of the pipe section during the fixing process. The elastic block 32 is preferably a rubber block.

[0059] After the two pipe sections are welded, although the positioning element 3 can be moved toward the axis of the carrier plate 1 by pulling it out under the interaction force with the pipe wall, the positioning element 3 will have a certain degree of rigid collision with the pipe wall. Therefore, in this embodiment, multiple elastic elements 6 are also provided. The elastic elements 6 are set on the positioning element 3. When the positioning element 3 moves toward the pipe wall, the elastic element 6 generates elastic deformation to store energy. After the tension on the traction rope 5 is released, the elastic element 6 restores its deformation and can pull the positioning element 3 to reset, thereby making the positioning element 3 detach from the inner wall of the pipe section, and avoiding mechanical collision with the inner wall of the pipe section during the detachment process.

[0060] Specifically, the elastic element 6 is preferably a tension spring, and the number of elastic elements 6 is the same as the number of positioning elements 3. Each elastic element 6 is respectively arranged between two adjacent positioning elements 3. When two adjacent positioning elements 3 move toward the pipe wall, their distance will increase, thereby stretching the elastic element 6. Conversely, the force of the elastic element 6 restoring its deformation can pull the two adjacent positioning elements 3 toward the axis of the carrier plate 1.

[0061] In a preferred embodiment, an inner liner 7 is also provided, which is disposed inside the hose 2. The traction rope 5 is inserted inside the inner liner 7. During the pulling process, the traction rope 5 will rub against the inner wall of the hose 2. If the traction rope 5 wears against the hose 2 for a long time, the cost of maintenance and replacement of parts will be high. Therefore, an inner liner 7 is provided. The inner liner 7 can be made of plastic hose.

[0062] Since the inner liner tube 7 is a consumable component and needs to be replaced periodically, the carrier plate 1 and the hose 2 can be fixed by threads. When the inner liner tube 7 needs to be replaced, simply remove the carrier plate 1 from the hose 2 to remove the inner liner tube 7 from the hose 2 for replacement.

[0063] To enable the positioning components 3 to move on the carrier tray 1, multiple movable openings 12 are provided on the carrier tray 1. Each positioning component 3 corresponds to one of the movable openings 12, and each positioning component 3 extends into its respective movable opening 12. A limiting piece is installed on the side of the positioning component 3 located inside the carrier tray 1 to prevent the positioning component 3 from detaching from the carrier tray 1 and to allow the positioning component 3 to slide on the carrier tray 1 through the movable opening 12. Specifically, the movable opening 12 is arranged in a straight line, and its length direction coincides with the radius direction of the carrier tray 1.

[0064] It should be noted that this tooling can be used not only for auxiliary welding operations in the production of exhaust pipes, but also for fixing two sections of exhaust pipes in situations such as exhaust pipe modification welding and repair welding. The length of the exhaust pipe that this tooling can enter depends on the length of the hose 2 and the traction rope 5.

[0065] like Figure 1-7As shown, the welding workbench of the present invention includes a workbench body 10, a pipe groove 20, a pipe pushing mechanism 30, a rope pulling assembly 40, and the aforementioned auxiliary tooling.

[0066] The workbench body 10 is placed on the ground and can be directly fixed to the ground. It has an operating surface, through which operators or welding equipment can perform welding operations on various sections of the exhaust pipe.

[0067] The tube groove 20 is fixed on the operating surface of the workbench body 10. The length of the tube groove 20 is greater than the length of the hose 2, and the cross-section of the groove on the tube groove 20 is arc-shaped. The radius of the circle containing the cross-section of the groove is not less than the radius of the hose 2, so that the hose 2 can be placed in the tube groove 20 and move along the length direction of the tube groove 20. At the same time, the tube groove 20 can restrict the direction of movement of the hose 2 inside it.

[0068] The tube pushing mechanism 30 is fixed on the workbench body 10 and has a movable end 301. The movable end 301 is fixed to the end of the hose 2 away from the carrier plate 1. Through the tube pushing mechanism 30, the hose 2 is pushed to move in the tube groove 20, so that the end of the hose 2 connected to the carrier plate 1 enters the pipe section, thereby saving the time of manual sleeve installation and further facilitating the welding operation.

[0069] The pull rope assembly 40 is fixed to the movable end 301 of the push pipe mechanism 30 and has a movable pull rope end 401. The pull rope end 401 is fixed to the end of the traction rope 5 away from the movable part 4. The pull rope assembly 40 can move with the movable end 301 of the push pipe mechanism 30. At the same time, after the push pipe mechanism 30 pushes the hose 2 into place, it pulls the traction rope 5 to position the two pipe sections using the auxiliary tooling.

[0070] In the specific operation process, one of the pipe sections to be welded is placed outside the pipe groove 20 with its end facing the carrier plate 1. The pipe pushing mechanism 30 can then push the hose 2. Under the guidance of the pipe groove 20, the hose 2 and the carrier plate 1 enter the pipe section. During the pushing process, if the pipe section is a bend, the hose 2 will undergo adaptive deformation. When the hose 2 and the carrier plate 1 are pushed into place, the movable end 301 of the pipe pushing mechanism 30 stops moving, and the other pipe section is put onto the outside of each positioning component 3. At the same time, the rope pulling assembly 40 pulls the traction rope 5 to fix the two pipe sections relatively.

[0071] It should be noted that when the entire hose 2 is in a straight line within the tube groove 20, the tube pushing mechanism 30 can directly use a linear module or other linear pushing equipment to push the hose 2 to move within the tube groove 20.

[0072] In this embodiment, a connector 50 is also provided. The connector 50 is fixed on the movable end 301 of the push tube mechanism 30 and fixed to the end of the hose 2 away from the carrier plate 1. The pull rope assembly 40 is provided on the connector 50. The connector 50 connects the push tube mechanism 30, the pull rope assembly 40 and the hose 2, so as to avoid the inability to directly install the pull rope assembly 40 or directly connect the end of the hose 2 on the movable end 301 of the selected push tube mechanism 30. The hose 2 and the connector 50 are directly fixed by threads, or the end of the hose 2 is fixed to the connector 50 by bolts or other structures, so that the hose 2 can be removed from the connector 50, thereby facilitating maintenance or component replacement.

[0073] Specifically, the pull rope assembly 40 includes a cylinder 41 and a movable plate 42. The cylinder 41 is fixed on the connector 50, and the movable plate 42 is movably mounted on the connector 50 and fixed to the output end of the cylinder 41. The movable plate 42 is fixed to the end of the traction rope 5 away from the movable part 4, so that during the extension and retraction process, the output end of the cylinder 41 drives the traction rope 5 to move through the movable plate 42. When the traction rope 5 is pulled towards the outside of the hose 2, the pipe section can be fixed. Conversely, when the movable plate 42 moves towards the hose 2, the traction rope 5 loses the force of pulling outward, and the positioning part 3 can leave the pipe wall.

[0074] To enable the movable plate 42 to move linearly on the connecting member 50, four guide rods are also provided on the movable plate 42. The four guide rods are parallel to each other and all pass through the connecting member 50. Linear bearings are provided on the connecting member 50 and sleeved on the outside of the guide rods to support the movement of the guide rods. The movement direction of the movable plate 42 can be guided by the provided guide rods.

[0075] In a preferred embodiment, a gripper 60 is also provided. The gripper 60 is set on the workbench body 10 and is used to grip one end of a single exhaust pipe segment near the carrier plate 1. After the gripper 60 is set, one end of one pipe segment is put into the gripper 60 and initially fixed by the gripper 60 so that the end of the pipe segment is aligned with the carrier plate 1. This way, when the carrier plate 1 and the hose 2 are inserted into the pipe segment, there is no need for manual handling, thereby further saving manpower.

[0076] Specifically, the gripper 60 includes a reduction motor, a housing, and two movable grippers. The housing is fixed to the worktable body 10, and the reduction motor is fixedly mounted on the housing. The two movable grippers are arranged opposite each other and are mirror images of each other. Gears are provided on both movable grippers, and the gears on the two movable grippers mesh with each other. The reduction motor drives the two movable grippers to rotate in opposite directions through the two gears. The two movable grippers cooperate to clamp the end of the pipe section and fix the end of the pipe section.

[0077] In addition to the above-mentioned configuration, the gripper 60 can also employ other pipe clamping fixtures from the prior art.

[0078] A control box is also installed on the workbench body 10, which allows operators to control the various components. At the same time, fixed programs can also be used to control the components uniformly.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding workbench, characterized in that: The components include a workbench body (10), a pipe groove (20), a pipe pushing mechanism (30), a rope pulling assembly (40), a connector (50), and auxiliary tooling for welding exhaust pipes. The exhaust pipe welding auxiliary tooling includes a carrier plate (1), a hose (2), a positioning component (3), a movable component (4), a traction rope (5), an elastic component (6), and an inner liner (7). The carrier disk (1) has a through-hole (11) in the axial direction. The hose (2) is fixed on the carrier plate (1) and one end is wrapped around the outside of the opening (11). The inner diameter of the end of the hose (2) is larger than the diameter of the opening (11). The hose (2) is used to extend into the exhaust pipe. The hose (2) is a metal braided hose. There are multiple positioning elements (3), all of which are movably arranged on the side of the carrier plate (1) away from the hose (2). The multiple positioning elements (3) are distributed around the axis of the carrier plate (1) and can move away from or close to the axis of the carrier plate (1). The positioning elements (3) are provided with two support surfaces (33), and the two support surfaces (33) are respectively used to contact the inner walls of the two exhaust pipes that need to be assembled and welded. The movable part (4) is conical, and its axis is on the same straight line as the axis of the carrier plate (1). Each of the positioning parts (3) is in contact with the conical surface of the movable part (4). The end of the movable part (4) with the vertex is inserted into the through-hole (11) and can move along the axis of the carrier plate (1) within the through-hole (11). The traction rope (5) is movably installed inside the hose (2), and one end is fixed to the end of the movable part (4) with a vertex. The other end of the traction rope (5) extends to the outside of the hose (2) for pulling the movable part (4) to move. The elastic element (6) is set on the positioning element (3) for pulling the positioning element (3) toward the axis of the carrier (1). The inner liner tube (7) is set inside the hose (2), and the traction rope (5) is inserted inside the inner liner tube (7). When the movable part (4) moves toward the opening (11), it pushes each positioning part (3) to move away from the axis of the carrier plate (1); The tube groove (20) is fixed on the workbench body (10), and the hose (2) is movably arranged in the tube groove (20). The tube groove (20) is used to restrict the movement direction of the hose (2). The tube pushing mechanism (30) is fixed on the workbench body (10) and has a movable end (301). The movable end (301) is fixed to the end of the hose (2) away from the carrier plate (1). The tube pushing mechanism (30) is used to push the hose (2) to move in the tube groove (20). The pull rope assembly (40) is fixed to the movable end (301) of the push tube mechanism (30) and has a movable pull rope end (401). The pull rope end (401) is fixed to the end of the traction rope (5) away from the movable part (4). The pull rope assembly (40) is used to pull the traction rope (5) to move the movable part (4) toward the opening (11). The connector (50) is fixed on the movable end (301) of the push tube mechanism (30) and fixed to the end of the hose (2) away from the carrier plate (1). The pull rope assembly (40) is set on the connector (50). The rope assembly (40) includes a cylinder (41) and a movable plate (42); The cylinder (41) is fixed to the connector (50); The movable plate (42) is movably mounted on the connector (50) and fixed to the output end of the cylinder (41). The movable plate (42) is fixed to the end of the traction rope (5) away from the movable part (4).

2. The welding workbench as described in claim 1, characterized in that: The positioning element (3) includes a connecting block (31) and two elastic blocks (32), wherein, The connecting block (31) is movably mounted on the carrier disk (1); Both elastic blocks (32) are fixed on the connecting block (31), and both elastic blocks (32) are provided with a support surface (33).

3. The welding workbench as described in claim 1, characterized in that: The elastic element (6) is a tension spring, and the number of them is the same as the number of positioning elements (3). The two ends of the elastic element (6) are respectively fixed to the two positioning elements (3) adjacent to the elastic element (6).

4. The welding workbench as described in claim 1, characterized in that: The carrier disk (1) has multiple movable openings (12), and the positioning element (3) corresponds to each movable opening (12). Each positioning element (3) extends into each movable opening (12).

5. The welding workbench as described in claim 1, characterized in that: It also includes a gripper (60) which is disposed on the worktable body (10) and is used to grip one end of the exhaust pipe near the carrier plate (1).

Images