Positioning tool based on variable-diameter flange machining

Abstract

The invention relates to the technical field of flange machining, in particular to a positioning tool based on variable-diameter flange machining. The concentric locking unit is arranged on the inner side of the machining frame and connected with the machining frame; the self-adaptive welding unit is arranged on the outer side of the concentric locking unit and connected with the machining frame; wherein the concentric locking unit comprises a rotary positioning assembly, a clamping and limiting assembly, a synchronous energy supply assembly and an automatic rotating assembly, the concentric locking unit is arranged and matched with the self-adaptive welding unit, locking and limiting of the small flange, the conical pipe and the large flange can be completed at a time, the small flange, the conical pipe and the large flange are concentric, and the automatic rotating assembly is arranged. And the small flange is tightly connected with the conical pipe, and the large flange is tightly connected with the conical pipe, so that the small flange, the conical pipe and the large flange synchronously rotate, and welding of the small flange and the conical pipe and welding of the large flange and the conical pipe are completed at a time.

Description

Technical Field

[0001] The invention relates to the technical field of flange processing, in particular to a positioning tool used for processing a variable diameter flange. Background Art

[0002] A reducer flange is an intermediate connector used to connect two different pipes, usually consisting of a large flange, a small flange, and a tapered pipe in the middle. During the processing of existing reducers, workers are required to weld one end of the tapered pipe to the large flange, and then weld the other end of the tapered pipe to the small flange.

[0003] When welding a reducer flange, it is necessary to use a positioning fixture to position the large and small flanges. The existing positioning fixtures are divided into two independent sets, one set is used for welding and positioning the large flange and the tapered tube, and the other set is used for welding and positioning the small flange and the tapered tube. As a result, the welding needs to be separated, there are many welding processes, and the large flange and the small flange are prone to being out of center during repeated positioning. Therefore, in view of the above situation, it is urgent to develop a positioning tooling based on variable diameter flange processing to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The purpose of the present invention is to provide a positioning tool for variable diameter flange processing to solve the problems raised in the above background technology.

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

[0006] A positioning tool for variable diameter flange processing, comprising: a processing frame; a concentric locking unit, which is arranged on the inner side of the processing frame and connected to the processing frame, and is used to cooperate with the processing frame to realize the center limit of the small flange and the large flange, and realize the synchronous positioning and locking of the tapered tube between the small flange and the large flange; an adaptive welding unit, which is arranged on the outer side of the concentric locking unit and connected to the processing frame, and is used to cooperate with the concentric locking unit to realize the synchronous welding of the small flange and the tapered tube, and the large flange and the tapered tube; wherein the concentric locking unit comprises: a rotating positioning component, a clamping and limiting component, a synchronous energy supply component and an automatic rotation component, wherein the rotating positioning component is connected to the frame wall at the bottom end inside the processing frame, and is used to cooperate with the processing frame to realize the support of the small flange and complete the positioning of the small flange, and the rotating positioning component is also connected to the synchronous welding component arranged on the processing frame The processing frame is connected to an energy supply component and is used to cooperate with the synchronous energy supply component to extrude and limit the tapered tube located on the outside of the top end of the small flange, so as to realize a tight connection between the small flange and the tapered tube. The synchronous energy supply component is also connected to the clamping and limiting component arranged on the top wall of the processing frame. The clamping and limiting component is rotatably connected to the wall of the processing frame and is arranged relative to the rotating positioning component. It is used to cooperate with the synchronous energy supply component to press the large flange located on the outside of the top end of the tapered tube, and complete the limiting of the large flange, so as to realize the concentricity of the small flange and the large flange. An automatic rotating component is also provided on the processing frame. The automatic rotating component is connected to the rotating positioning component and is also connected to the clamping and limiting component. It is used to drive the rotating positioning component and the clamping and limiting component to realize the synchronous rotation of the small flange, the tapered tube and the large flange, and cooperate with the adaptive welding unit to complete the synchronous welding of the small flange and the tapered tube, and the large flange and the tapered tube.

[0007] As a further solution of the present invention: the rotary positioning assembly includes: a supporting truncated table, a positioning clamp, an annular sleeve, a supporting column, a piston groove, a vent pipe, a telescopic member and an extrusion locking assembly, the supporting column is rotatably connected to the inner wall of the bottom end of the processing frame, an annular sleeve fixedly connected to the processing frame is arranged around the outer side of the supporting column, an annular opening is arranged on the cylinder wall on the side where the annular sleeve is connected to the supporting column, a vent pipe fixedly connected to the supporting column is arranged inside the annular opening, the vent pipe is connected to the piston groove arranged inside the supporting column, and the annular sleeve is also connected to the synchronous energy supply The components are connected and are used to cooperate with the synchronous energy supply component to realize the flow of air inside the piston groove. A supporting cone is fixedly connected to the outer side of the top end of the support column, and a plurality of positioning clamps are slidably connected to the shell wall of the top end of the supporting cone. The positioning clamps are distributed equidistantly in a ring shape and are connected to the supporting cone through a telescopic member, and the telescopic member is used to achieve clamping and limiting of the small flange on the supporting cone by telescoping the telescopic member. An extrusion locking component connected to the piston groove is also provided on the supporting cone, which is used to cooperate with the air flowing inside the piston groove to achieve extrusion locking of the conical tube on the small flange.

[0008] As a further solution of the present invention: the extrusion locking assembly includes: a lifting ring, a fixed rod, a connecting slide rod, a fixed column, a rotating rod, a control block, a rotating gear, a connecting frame and a locking ball. The lifting ring is slidably connected to the inner side of the piston groove, and a fixed rod is fixedly connected to the outer side of the top end of the lifting ring. A connecting slide rod is slidably connected to the inner side of the fixed rod. One end of the connecting slide rod is connected to the fixed rod through a spring, and the other end is fixedly connected to the outer side of the control block. A fixed column is provided on the outer cover of the control block. A plurality of rotating rods are rotatably connected to the shell wall of the fixed column. The rotating rods are equidistantly distributed in a ring shape, and a connecting frame is fixedly connected to the outer side. The other end of the connecting frame is fixedly connected to the locking ball. A rotating gear is also fixedly connected to the outer side of the rotating rod. The rotating gear is meshed with a regulating tooth fixedly connected to the control block, which is used to cooperate with the lifting and lowering of the control block to drive the rotating rod to rotate, so as to realize the extrusion locking of the conical tube by the locking ball.

[0009] As a further solution of the present invention: the clamping and limiting assembly includes: a supporting rotating tube, a sealing ring, a control rod, a synchronous frame, a connecting seat, a movable guide rod, a pressing plate, an induction tube, a pressure regulating piece, a pressure guiding tube, a limiting splint, a movable seat, an induction groove and an induction ring. The supporting rotating tube is rotatably connected to the top frame wall of the processing frame, and the top tube wall is connected to the synchronous energy supply assembly. A sealing ring is provided for sliding connection on the inner side of the supporting rotating tube, a control rod is fixedly connected to the outer side of the bottom end of the sealing ring, a movable guide rod is slidably connected to the inner side of the other end of the control rod, a spring is fixedly connected between the movable guide rod and the control rod, and the other end is fixedly connected to the pressing plate, for cooperating with the synchronous energy supply assembly to realize pressing the large flange located on the outer side of the top end of the conical tube, a plurality of synchronous frames are also fixedly connected to the outer side of the control rod, and the synchronous frames are fixedly connected to the synchronous frames. The connecting seat on the outer side of the supporting rotating tube is slidably connected to realize the synchronous rotation of the supporting rotating tube and the control rod; an induction tube fixedly connected to the pressing plate is arranged between the synchronous frame and the pressing plate; a pressure regulating piece compatible with the induction tube is also fixedly connected to the synchronous frame to realize the synchronous rotation of the pressing plate and the supporting rotating tube in cooperation with the synchronous frame; the induction tube is fixedly connected to the pressure guiding tube arranged on the inner side of the pressing plate; a movable seat slidably connected to the shell wall of the pressing plate is arranged on the outer side of the other end of the pressure guiding tube; a sensing groove is arranged on the inner side of the movable seat; an induction ring slidably connected to the induction groove is fixedly connected to the outer wall of the pressure guiding tube; a spring is fixedly connected between the induction ring and the movable seat; a limiting clamp slidably connected to the shell wall of the bottom end of the pressing plate is fixedly connected to the outer side of the bottom end of the movable seat for clamping and fixing the large flange in cooperation with the movement of the movable seat.

[0010] As a further solution of the present invention: the synchronous energy supply component includes: a control box, a servo motor, a bidirectional screw, a control board, a balance box, a pressure pipe, a connecting conduit, a transmission box, a control pipe and a pressure-stabilizing conduit. The control box is fixedly connected to the processing frame, and a servo motor is fixedly connected to the bottom inner side of the control box. The output end of the servo motor is fixedly connected to the bidirectional screw. The outer sides of both ends of the bidirectional screw are respectively threadedly connected with a control board and a regulating board that are slidably connected to the inner wall of the control box, which are used to cooperate with the rotation of the bidirectional screw to drive the control board and the regulating board to move synchronously in opposite directions. A balance box is fixedly connected to the inner side of the top of the control box, and a pressure pipe fixedly connected to the balance box is arranged between the balance box and the control board. A pressure transmission piece fixedly connected to the control board is provided in a sliding connection on the inner side of the tube; the box wall at the other end of the balance box is connected to the connecting conduit, and the other end of the connecting conduit is connected to the supporting rotating tube, which is rotatably connected to the tube wall at the top of the supporting rotating tube, and is used to cooperate with the movement of the pressure transmission piece on the inner side of the pressure transmission tube to realize the pressing of the clamping limit assembly on the large flange; a transmission box is fixedly connected to the bottom inside the control box, and a control tube fixedly connected to the transmission box is provided between the transmission box and the regulating plate; a control piece fixedly connected to the regulating plate is provided in a sliding connection on the inner side of the control tube, and the box wall at the other end of the transmission box is connected to the annular sleeve through a pressure-stabilizing conduit, and is used to cooperate with the movement of the control piece on the inner side of the control tube to drive the rotating positioning assembly to realize the positioning and locking of the conical tube.

[0011] As a further solution of the present invention: the automatic rotation component includes: a driving motor, a driving rod and a synchronization rod. The driving motor is fixedly connected to the outside of the top end of the processing frame, the output end of the driving motor is fixedly connected to the driving rod, and a synchronization rod rotatably connected to the processing frame is arranged on the outside of the driving rod. The synchronization rod and the driving rod are connected by a synchronization member, and the driving rod and the supporting rotating tube, the synchronization rod and the supporting column are all connected by a belt transmission member, which is used to cooperate with the driving rod to synchronously drive the small flange and the large flange to rotate.

[0012] As a further solution of the present invention: the adaptive welding unit includes: a mounting frame, a telescopic part, an adjustment plate, a lifting frame, a positioning part and a welding gun, the mounting frame is fixedly connected to the outside of the processing frame, the lifting frame is symmetrically arranged on the inside of the mounting frame, the lifting frames on both sides are fixedly connected to the outside of one end away from each other and are provided with a positioning part, the other end of the positioning part is fixedly connected to the mounting frame, the lifting frames on both sides are provided with a welding gun on the outside of the opposite end, the adjustment plate is fixedly connected to the outside of the welding gun, and a telescopic part is fixedly connected between the adjustment plate and the lifting frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When the device is running, the small flange is placed on the rotating positioning assembly, and the rotating positioning assembly clamps and limits the small flange. The tapered tube is placed on the small flange, and the large flange is placed on the tapered tube. The synchronous energy supply assembly can simultaneously drive the rotating positioning assembly and the clamping and limiting assembly. The rotating positioning assembly can squeeze and lock the tapered tube on the small flange, which not only makes the tapered tube concentric with the small flange, but also squeezes the tapered tube downward so that the tapered tube and the small flange can be tightly connected. The clamping and limiting assembly can press the large flange on the tapered tube downward and clamp and limit the large flange, which not only makes the large flange concentric with the small flange, but also keeps the large flange and the tapered tube tightly connected. The automatic rotating assembly can simultaneously drive the rotating positioning assembly and the clamping and limiting assembly to rotate, drive the small flange and the large flange to rotate, and drive the tapered tube to rotate synchronously. The small flange, the tapered tube and the large flange are used. The rotation of the flange, in conjunction with the adaptive welding unit, can complete the synchronous welding of the small flange and the tapered tube, and the large flange and the tapered tube. Compared with the prior art, the positioning fixture of the present application is divided into two independent sets, one set is used for the welding positioning of the large flange and the tapered tube, and the other set is used for the welding positioning of the small flange and the tapered tube, which results in the need for separate welding during welding, many welding processes, and the large flange and the small flange are prone to being out of center during repeated positioning. By setting a concentric locking unit in conjunction with the adaptive welding unit, the locking and limiting of the small flange, the tapered tube and the large flange can be completed at one time, so that the small flange, the tapered tube and the large flange are concentric, and the small flange and the tapered tube, and the large flange and the tapered tube are kept tightly connected, so that the small flange, the tapered tube and the large flange rotate synchronously, and the welding of the small flange and the tapered tube, and the large flange and the tapered tube is completed at one time, which greatly improves the welding efficiency and ensures the accuracy of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the positioning tooling used for variable diameter flange processing.

[0015] Figure 2 This is a cross-sectional view of a positioning tool used for variable diameter flange processing.

[0016] Figure 3 It is a schematic diagram of the structure of the rotary positioning component in the positioning tooling used for variable diameter flange processing.

[0017] Figure 4 It is a cross-sectional view of a rotary positioning component in a positioning tool used for variable diameter flange processing.

[0018] Figure 5 It is a schematic diagram of the structure of the extrusion locking component in the positioning tooling used for variable diameter flange processing.

[0019] Figure 6It is a schematic diagram of the structure of the clamping and limiting components in the positioning tooling used for variable diameter flange processing.

[0020] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Figure 8 This is a schematic diagram of the structure of the synchronous energy supply component in the positioning tooling used for variable diameter flange processing.

[0022] Fig. 9 It is a schematic diagram of the structure of the automatic rotating component in the positioning tooling used for variable diameter flange processing.

[0023] Fig.10 It is a schematic diagram of the structure of the adaptive welding unit in the positioning tooling used for variable diameter flange processing.

[0024] In the figure: 1-processing frame, 2-adaptive welding unit, 3-small flange, 4-tapered tube, 5-large flange, 6-concentric locking unit, 7-rotating positioning assembly, 8-clamping limit assembly, 9-synchronous energy supply assembly, 10-automatic rotation assembly, 11-extrusion locking assembly, 12-supporting round table, 13-positioning splint, 14-annular sleeve, 15-support column, 16-piston groove, 17-ventilation pipe, 18-telescopic part, 19-adjusting plate, 20-retractable part, 21-lifting ring, 22-fixed rod, 23-connecting slide rod, 24-fixed column, 25-rotating rod, 26-control block, 27-rotating gear, 28-connecting frame, 29-locking ball, 30-support rotating tube , 31-sealing ring, 32-control rod, 33-synchronous frame, 34-connecting seat, 35-movable guide rod, 36-pressing plate, 37-sensing tube, 38-pressure regulating part, 39-pressure pipe, 40-limiting splint, 41-movable seat, 42-sensing slot, 43-sensing ring, 44-control box, 45-servo motor, 46-bidirectional screw, 47-control board, 48-balance box, 49-pressure pipe, 50-pressure supply part, 51-connecting conduit, 52-transmission box, 53-control tube, 54-control part, 55-pressure stabilizing conduit, 56-driving motor, 57-driving rod, 58-synchronous rod, 59-mounting frame, 60-lifting frame, 61-positioning part, 62-welding gun. DETAILED DESCRIPTION

[0025] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] See also Figure 1 and Figure 2 In one embodiment of the present invention, a positioning tool for variable diameter flange processing includes: a processing frame 1; a concentric locking unit 6, which is arranged on the inner side of the processing frame 1 and connected to the processing frame 1, and is used to cooperate with the processing frame 1 to realize the center limit of the small flange 3 and the large flange 5, and realize the synchronous positioning and locking of the tapered tube 4 between the small flange 3 and the large flange 5; an adaptive welding unit 2, which is arranged on the outer side of the concentric locking unit 6 and connected to the processing frame 1, and is used to cooperate with the concentric locking unit 6 to realize the synchronous welding of the small flange 3 and the tapered tube 4, and the large flange 5 and the tapered tube 4; wherein the concentric locking unit 6 includes: a rotating positioning component 7, a clamping and limiting component 8, a synchronous energy supply component 9 and an automatic rotation component 10, wherein the rotating positioning component 7 is connected to the inner bottom end frame wall of the processing frame 1, and is used to cooperate with the processing frame 1 to realize the support of the small flange 3 and complete the positioning of the small flange 3, and the rotating positioning component 7 is also connected to the processing frame 1 is connected to the synchronous energy supply component 9, which is used to cooperate with the synchronous energy supply component 9 to extrude and limit the tapered tube 4 located on the outside of the top end of the small flange 3, so as to realize the tight connection between the small flange 3 and the tapered tube 4. The synchronous energy supply component 9 is also connected to the clamping and limiting component 8 arranged on the top wall of the processing frame 1. The clamping and limiting component 8 is rotatably connected to the wall of the processing frame 1, and is arranged relative to the rotating positioning component 7, which is used to cooperate with the synchronous energy supply component 9 to realize pressing the large flange 5 located on the outside of the top end of the tapered tube 4, and complete the limiting of the large flange 5, so as to realize the concentricity of the small flange 3 and the large flange 5. An automatic rotating component 10 is also provided on the processing frame 1, and the automatic rotating component 10 is connected to the rotating positioning component 7, and is also connected to the clamping and limiting component 8, which is used to drive the rotating positioning component 7 and the clamping and limiting component 8 to realize the synchronous rotation of the small flange 3, the tapered tube 4 and the large flange 5, and cooperate with the adaptive welding unit 2 to complete the synchronous welding of the small flange 3 and the tapered tube 4, and the large flange 5 and the tapered tube 4.

[0028] In this embodiment, when the device is running, the small flange 3 is placed on the rotating positioning component 7, the rotating positioning component 7 clamps and limits the small flange 3, the tapered tube 4 is placed on the small flange 3, and the large flange 5 is placed on the tapered tube 4. The synchronous energy supply component 9 can simultaneously drive the rotating positioning component 7 and the clamping and limiting component 8, the rotating positioning component 7 can squeeze and lock the tapered tube 4 on the small flange 3, not only making the tapered tube 4 concentric with the small flange 3, but also squeezing the tapered tube 4 downward, so that the tapered tube 4 and the small flange 3 can be tightly connected, and the clamping and limiting component 8 can press the large flange 5 on the tapered tube 4 downward, and clamp and limit the large flange 5, not only making the large flange 5 concentric with the small flange 3, but also keeping the large flange 5 and the tapered tube 4 tightly connected, the automatic rotating component 10 can simultaneously drive the rotating positioning component 7 and the clamping and limiting component 8 to rotate, drive the small flange 3 and the large flange 5 to rotate, and drive the tapered tube 4 to rotate synchronously, using the small flange The concentric locking unit 6 is set, and the concentric locking unit 6 is set, and the concentric locking unit 6 is set, and the concentric locking unit 6 is set, and the concentric locking unit 6 is set. The ...

[0029] In one embodiment of the present invention, please refer to Figure 3 and Figure 4The rotary positioning assembly 7 includes: a supporting truncated table 12, a positioning clamping plate 13, an annular sleeve 14, a supporting column 15, a piston groove 16, a vent pipe 17, a telescopic member 18 and an extrusion locking assembly 11. The supporting column 15 is rotatably connected to the inner wall of the bottom end of the processing frame 1. The outer side of the supporting column 15 is surrounded by an annular sleeve 14 fixedly connected to the processing frame 1. The wall of the annular sleeve 14 connected to the supporting column 15 is provided with an annular opening. The inner side of the annular opening is provided with a vent pipe 17 fixedly connected to the supporting column 15. The vent pipe 17 is connected to the piston groove 16 provided on the inner side of the supporting column 15. The annular sleeve 14 is also connected to the synchronous energy supply assembly 9 is connected, and is used to cooperate with the synchronous energy supply component 9 to realize the flow of air inside the piston groove 16. The top outer side of the support column 15 is fixedly connected to a support cone 12, and a plurality of positioning clamps 13 are slidably connected on the top shell wall of the support cone 12. The positioning clamps 13 are distributed in an annular shape and are equidistantly distributed, and are connected to the support cone 12 through a telescopic member 18, and the telescopic member 18 is used to achieve the clamping and limiting of the small flange 3 on the support cone 12 by the telescopic member 18. The support cone 12 is also provided with an extrusion locking component 11 connected to the piston groove 16, which is used to cooperate with the air flowing inside the piston groove 16 to achieve the extrusion locking of the tapered tube 4 on the small flange 3.

[0030] In this embodiment, the telescopic member 18 is arranged on the inner side of the support truncated platform 12, one end is fixedly connected to the positioning splint 13, and the other end is fixedly connected to the support truncated platform 12. The telescopic member 18 is an electric telescopic rod. In addition, the extrusion locking assembly 11 is fixedly connected to the top shell wall of the support truncated platform 12, and the positioning splint 13 is arranged around the outside of the extrusion locking assembly 11. A sealing ring is fixedly connected to the outer wall of the connection between the support column 15 and the annular sleeve 14. The small flange 3 is placed on the support truncated platform 12, and the conical tube 4 is arranged around the outside of the extrusion locking assembly 11, and the bottom end is connected to the top of the small flange 3. The telescopic member 18 drives the positioning splint 13 to move, and the positioning splint 13 clamps and limits the small flange 3 located on the support truncated platform 12, and the synchronous energy supply assembly 9 can convey The air enters the inner side of the annular sleeve 14 and enters the inner side of the piston groove 16 along the vent pipe 17. The air entering the inner side of the piston groove 16 can drive the extrusion locking assembly 11. The extrusion locking assembly 11 can clamp and limit the tapered tube 4. The tapered tube 4 after being limited is concentric with the small flange 3, and the extrusion locking assembly 11 can also apply a downward force to the tapered tube 4, so that the bottom end of the tapered tube 4 is tightly connected with the top end of the small flange 3. By setting the rotating positioning assembly 7, not only can the small flange 3 be supported and positioned, but the small flange 3 can also be used to support the tapered tube 3 and the large flange 5, and the synchronous energy supply assembly 9 can be used to realize the positioning of the tapered tube 4, and the tapered tube 4 can also be kept tightly connected with the small flange 3, so that the tapered tube 4 and the small flange 3 remain stable during welding.

[0031] In one embodiment of the present invention, please refer to Figure 4 and Figure 5 The extrusion locking assembly 11 includes: a lifting ring 21, a fixed rod 22, a connecting slide rod 23, a fixed column 24, a rotating rod 25, a control block 26, a rotating gear 27, a connecting frame 28 and a locking ball 29. The lifting ring 21 is slidably connected to the inner side of the piston groove 16, and the outer side of the top of the lifting ring 21 is fixedly connected to the fixed rod 22. The inner side of the fixed rod 22 is slidably connected to the connecting slide rod 23. One end of the connecting slide rod 23 is connected to the fixed rod 22 through a spring, and the other end is fixedly connected to the outer side of the control block 26. A fixed column 24 is provided on the outer cover of the control block 26, and a plurality of rotating rods 25 are rotatably connected on the shell wall of the fixed column 24. The rotating rods 25 are equidistantly distributed in a ring shape, and a connecting frame 28 is fixedly connected on the outer side. The other end of the connecting frame 28 is fixedly connected to a locking ball 29. A rotating gear 27 is also fixedly connected to the outer side of the rotating rod 25. The rotating gear 27 is meshed with a regulating tooth fixedly connected to the control block 26, and is used to cooperate with the lifting and lowering of the control block 26 to drive the rotating rod 25 to rotate, so as to realize the squeezing and locking of the tapered tube 4 by the locking ball 29.

[0032] In this embodiment, the function of the lifting ring 21 is the same as that of the piston. When the synchronous energy supply component 9 inputs air into the inner side of the piston groove 16, the lifting ring 21 can be driven to move upward along the groove wall of the piston groove 16. The lifting ring 21 cooperates with the fixing rod 22 and the connecting slide rod 23 to drive the control block 26 to move upward. The regulating teeth arranged on the outer side of the control block 26 cooperate with the rotating gear 27 to drive the rotating rod 25 to rotate. The rotating rod 25 cooperates with the connecting frame 28 to drive the locking ball 29 to rotate toward the inner wall of the tapered tube 4, thereby completing the clamping and locking of the tapered tube 4. The tube wall of the conical tube 4 is arranged at an angle. When the locking ball 29 squeezes the conical tube 4, it can press the conical tube 4 downward, so that the conical tube 4 and the small flange 3 can maintain a tight connection. In addition, the outer surface of the locking ball 29 is provided with an anti-slip layer, and the anti-slip layer is made of rubber material. By setting the extrusion locking component 11, the synchronous energy supply component 9 can be cooperated to achieve the positioning and locking of the conical tube 4 located on the small flange 3, so that the conical tube 4 and the small flange 3 maintain a tight connection, thereby making the conical tube 4 and the small flange 3 remain stable during welding.

[0033] In one embodiment of the present invention, please refer to Figure 6 and Figure 7The clamping and limiting assembly 8 includes: a supporting rotating tube 30, a sealing ring 31, a control rod 32, a synchronous frame 33, a connecting seat 34, a movable guide rod 35, a pressing plate 36, a sensing tube 37, a pressure regulating member 38, a pressure guiding tube 39, a limiting clamping plate 40, a movable seat 41, a sensing groove 42 and a sensing ring 43. The supporting rotating tube 30 is rotatably connected to the top wall of the processing frame 1, and the top wall is connected to the synchronous energy supply assembly 9. The inner side of the supporting rotating tube 30 is slidably connected with a sealing ring 31, and the sealing ring 31 is provided. The outer side of the bottom end of the sealing ring 31 is fixedly connected to a control rod 32, and the other end of the control rod 32 is slidably connected to a movable guide rod 35. A spring is fixedly connected between the movable guide rod 35 and the control rod 32, and the other end is fixedly connected to a pressing plate 36, which is used to cooperate with the synchronous energy supply component 9 to realize pressing the large flange 5 located on the outer side of the top of the conical tube 4. A plurality of synchronous frames 33 are also fixedly connected to the outer side of the control rod 32, and the synchronous frames 33 are slidably connected to a connecting seat 34 fixedly connected to the outer side of the supporting rotating tube 30, so as to realize the synchronous rotation of the supporting rotating tube 30 and the control rod 32. An induction tube 37 fixedly connected to the pressing plate 36 is provided between the synchronous frame 33 and the pressing plate 36. A pressure regulating member 38 compatible with the induction tube 37 is also fixedly connected to the synchronous frame 33 to realize the synchronous rotation of the pressing plate 36 and the supporting rotating tube 30 with the synchronous frame 33. The induction tube 37 is fixedly connected to a pressure guiding tube 39 arranged on the inner side of the pressing plate 36. The pressure guiding tube 39 A movable seat 41 is provided on the outer side of the other end and is slidably connected to the shell wall of the pressing plate 36. An induction groove 42 is provided on the inner side of the movable seat 41. An induction ring 43 is fixedly connected to the outer wall of the pressure-conducting tube 39 and is slidably connected to the induction groove 42. A spring is fixedly connected between the induction ring 43 and the movable seat 41. A limiting clamp 40 is fixedly connected to the outer side of the bottom end of the movable seat 41 and is slidably connected to the shell wall of the bottom end of the pressing plate 36, so as to cooperate with the movement of the movable seat 41 to clamp and fix the large flange 5.

[0034] In this embodiment, the synchronous frame 33 is arranged around the outer side of the control rod 32 and is fixedly connected to the control rod 32. The connecting seat 34 is arranged one by one with the synchronous frame 33 and is fixedly connected to the support rotating tube 30. A pressure regulating member 38 is fixedly connected to the outer side of the bottom end of each synchronous frame 33. The pressure regulating member 38 includes a first push rod fixedly connected to the synchronous frame 33 and a first piston fixedly connected to the outer side of the bottom end of the first push rod. The first piston is arranged opposite to the induction tube 37, and in the initial state, the first piston is not connected to the induction tube 37. After the synchronous energy supply component 9 injects gas into the inner side of the support rotating tube 30, the sealing ring 31 moves downward along the inner wall of the support rotating tube 30. The sealing ring 31 cooperates with the control rod 32 and the movable guide rod 35 to drive the pressing plate 36 to move downward to press the large flange 5. As the sealing ring 31 continues to move downward, the control rod 32 drives the synchronous frame 33 to continue to move downward, and the synchronous frame 33 drives the first piston to insert into the inner side of the induction tube 37. By using the movement of the first piston inside the induction tube 37, The air inside the induction tube 37 enters the inside of the induction groove 42 along the pressure-conducting tube 39, and the air gathers inside the induction groove 42, so that the air pressure inside the induction groove 42 rises. Since the induction ring 43 is fixedly connected to the outside of the pressure-conducting tube 39, as the air pressure rises, the movable seat 41 moves away from the induction ring 43 under the drive of the air pressure, and the movable seat 41 drives the limit clamping plate 40 to move synchronously, completing the clamping and limiting of the large flange 5. The spring arranged between the induction ring 43 and the movable seat 41 can complete the The movable seat 41 is reset, wherein the functions of the sealing ring 31 and the induction ring 43 are the same as those of the piston. By setting the clamping limit assembly 8, the large flange 5 can be pressed in cooperation with the synchronous energy supply assembly 9, and then the clamping limit of the large flange 5 is completed, so that the large flange 5 is concentric with the tapered tube 4, and the large flange 5 and the tapered tube 4 are kept tightly connected, so that the large flange 5 and the tapered tube 4 can be stably welded, and the small flange 3, the tapered tube 4 and the large flange 5 can be ensured to rotate synchronously.

[0035] In one embodiment of the present invention, please refer to Figure 8The synchronous energy supply component 9 includes: a control box 44, a servo motor 45, a bidirectional screw 46, a control board 47, a balance box 48, a pressure pipe 49, a connecting conduit 51, a transmission box 52, a control pipe 53 and a pressure stabilizing conduit 55. The control box 44 is fixedly connected to the processing frame 1, and a servo motor 45 is fixedly connected to the bottom of the inner side of the control box 44. The output end of the servo motor 45 is fixedly connected to the bidirectional screw 46. The outer sides of both ends of the bidirectional screw 46 are respectively threadedly connected with a control board 47 and a regulating board that are slidably connected to the inner wall of the control box 44, which are used to cooperate with the rotation of the bidirectional screw 46 to drive the control board 47 and the regulating board to move synchronously in opposite directions. A balance box 48 is fixedly connected to the inner side of the top of the control box 44, and a pressure pipe 49 fixedly connected to the balance box 48 is provided between the balance box 48 and the control board 47. The pressure pipe 49 A pressure-transmitting component 50 fixedly connected to the control plate 47 is provided on the inner side slidingly, and the box wall at the other end of the balance box 48 is connected to a connecting conduit 51, and the other end of the connecting conduit 51 is connected to the supporting rotating tube 30, and is rotatably connected to the top tube wall of the supporting rotating tube 30, so as to cooperate with the movement of the pressure-transmitting component 50 on the inner side of the pressure-transmitting tube 49 to realize the pressing of the clamping limit assembly 8 on the large flange 5, and a transmission box 52 is fixedly connected to the bottom of the inner side of the control box 44, and a control tube 53 fixedly connected to the transmission box 52 is provided between the transmission box 52 and the regulating plate, and a control component 54 fixedly connected to the regulating plate is slidably provided on the inner side of the control tube 53, and the box wall at the other end of the transmission box 52 is connected to the annular sleeve 14 through a pressure-stabilizing conduit 55, so as to cooperate with the movement of the control component 54 on the inner side of the control tube 53 to drive the rotating positioning assembly 7 to realize the positioning and locking of the conical tube 4.

[0036] In this embodiment, the pressure delivery member 50 includes a second piston slidably connected to the inner side of the pressure delivery pipe 49 and a second push rod fixedly connected to the second piston. The other end of the second push rod is fixedly connected to the control board 47. The control member 54 includes a third piston slidably connected to the inner side of the control pipe 53 and a control board fixedly connected to the third piston. The servo motor 45 drives the bidirectional screw 46 to rotate. When the bidirectional screw 46 rotates, the control board 47 and the control board are driven to move synchronously in opposite directions. The control board 47 drives the second piston to move inside the pressure delivery pipe 49. The air inside the pressure delivery pipe 49 enters the inner side of the balance box 48 and flows along the connecting conduit. 51 enters the inner side of the supporting rotating tube 30, and the regulating plate drives the third piston to move inside the control tube 53. The air inside the control tube 53 enters the inner side of the transmission box 52, and enters the inner side of the annular sleeve 14 along the pressure-stabilizing conduit 55, thereby driving the rotary positioning component 7. By setting the synchronous energy supply component 9, the driving of the rotary positioning component 7 and the clamping and limiting component 8 can be completed at the same time. On the one hand, the positioning and locking of the tapered tube 4 are completed, and on the other hand, the pressing and limiting of the large flange 5 are completed, thereby ensuring the stability of the small flange 3, the tapered tube 4 and the large flange 5 during processing, and realizing the synchronous rotation of the small flange 3, the tapered tube 4 and the large flange 5.

[0037] In one embodiment of the present invention, please refer to Fig. 9 The automatic rotation component 10 includes: a driving motor 56, a driving rod 57 and a synchronization rod 58. The driving motor 56 is fixedly connected to the outside of the top of the processing frame 1, and the output end of the driving motor 56 is fixedly connected to the driving rod 57. A synchronization rod 58 rotatably connected to the processing frame 1 is arranged on the outside of the driving rod 57. The synchronization rod 58 and the driving rod 57 are connected by a synchronization member. The driving rod 57 and the supporting rotating tube 30, the synchronization rod 58 and the supporting column 15 are all connected by a belt transmission member, which is used to cooperate with the driving rod 57 to synchronously drive the small flange 3 and the large flange 5 to rotate.

[0038] In this embodiment, the synchronous member includes a sprocket fixedly connected to the outside of the driving rod 57 and the synchronous rod 58, and the sprockets are connected by a chain. In addition, the belt transmission member includes a first pulley and a second pulley, wherein the driving rod 57 and the synchronous rod 58 are fixedly connected to the outside of the first pulley, and the supporting rotating tube 30 and the supporting column 15 are fixedly connected to the outside of the second pulley, the first pulley arranged on the outside of the driving rod 57 and the second pulley arranged on the outside of the supporting rotating tube 30 are connected by a belt, and the first pulley arranged on the outside of the synchronous rod 58 and the second pulley arranged on the outside of the supporting column 15 are connected by a belt, the driving motor 56 drives the driving rod 57 to rotate, the driving rod 57 drives the synchronous rod 58 to rotate synchronously, the driving rod 57 can also drive the supporting rotating tube 30 to rotate, the synchronous rod 58 drives the supporting column 15 to rotate at the same speed as the supporting rotating tube 30, and then drives the small flange 3 and the large flange 5 to rotate, the small flange 3 and the large flange 5 drive the tapered tube 4 to rotate synchronously, and cooperate with the adaptive welding unit 2 to complete automatic welding.

[0039] In one embodiment of the present invention, please refer to Figure 1 and Fig.10 The adaptive welding unit 2 includes: a mounting frame 59, a telescopic member 18, an adjusting plate 19, a lifting frame 60, a positioning member 61 and a welding gun 62. The mounting frame 59 is fixedly connected to the outside of the processing frame 1, and the lifting frame 60 is symmetrically arranged on the inside of the mounting frame 59. The lifting frames 60 on both sides are fixedly connected to the outer sides of one end away from each other, and the positioning member 61 is fixedly connected. The other end of the positioning member 61 is fixedly connected to the mounting frame 59. The welding gun 62 is arranged on the outer side of the opposite end of the lifting frames 60 on both sides, and the adjusting plate 19 is fixedly connected to the outer side of the welding gun 62. The telescopic member 18 is fixedly connected between the adjusting plate 19 and the lifting frame 60.

[0040] In this embodiment, the telescopic member 18 and the positioning member 61 are both electric telescopic rods. After the small flange 3, the tapered tube 4 and the large flange 5 are locked, the positioning member 61 drives the lifting frame 60 to rise and fall, and adjusts the longitudinal position of the welding gun 62. The telescopic member 18 cooperates with the adjustment plate 19 to adjust the lateral position of the welding gun 62. The automatic rotation component 10 drives the small flange 3, the tapered tube 4 and the large flange 5 to rotate synchronously. The welding guns 62 on both sides complete the synchronous welding of the small flange 3 and the tapered tube 4, and the large flange 5 and the tapered tube 4. By setting the adaptive welding gun unit 2, it can cooperate with the concentric locking unit 6 to complete the synchronous welding of the small flange 3 and the tapered tube 4, and the large flange 5 and the tapered tube 4, thereby greatly improving the welding efficiency.

[0041] The positioning tool for variable diameter flange processing can complete the locking and limiting of the small flange 3, the tapered tube 4 and the large flange 5 at one time by setting a concentric locking unit 6 and cooperating with the adaptive welding unit 2, so that the small flange 3, the tapered tube 4 and the large flange 5 are concentric, and the small flange 3 and the tapered tube 4, and the large flange 5 and the tapered tube 4 are kept tightly connected, so that the small flange 3, the tapered tube 4 and the large flange 5 rotate synchronously, and the welding of the small flange 3 and the tapered tube 4, and the large flange 5 and the tapered tube 4 is completed at one time, which greatly improves the welding efficiency. The efficiency is improved and the accuracy of welding is ensured. By setting the rotating positioning component 7, not only can the small flange 3 be supported and positioned, but also the small flange 3 can be used to support the tapered tube 3 and the large flange 5, and the synchronous energy supply component 9 can be used to realize the positioning of the tapered tube 4, and the tapered tube 4 and the small flange 3 can be kept tightly connected, so that the tapered tube 4 and the small flange 3 can be kept stable during welding. By setting the extrusion locking component 11, the synchronous energy supply component 9 can be used to realize the positioning and locking of the tapered tube 4 on the small flange 3, so that the tapered tube 4 and the small flange 3 can be kept stable during welding. The tapered tube 4 is tightly connected to the small flange 3, so that the tapered tube 4 and the small flange 3 are kept stable during welding. By setting the clamping limit component 8, the synchronous energy supply component 9 can be used to press the large flange 5, and then the clamping limit of the large flange 5 is completed, so that the large flange 5 is concentric with the tapered tube 4, and the large flange 5 and the tapered tube 4 are tightly connected, so that the large flange 5 and the tapered tube 4 can be stably welded, and the small flange 3, the tapered tube 4 and the large flange 5 can be rotated synchronously. By setting the synchronous The energy supply component 9 can simultaneously complete the driving of the rotating positioning component 7 and the clamping and limiting component 8, on the one hand, complete the positioning and locking of the tapered tube 4, on the other hand, complete the pressing and limiting of the large flange 5, thereby ensuring the stability of the small flange 3, the tapered tube 4 and the large flange 5 during processing, and realizing the synchronous rotation of the small flange 3, the tapered tube 4 and the large flange 5. By setting the adaptive welding gun unit 2, it can cooperate with the concentric locking unit 6 to complete the synchronous welding of the small flange 3 and the tapered tube 4, and the large flange 5 and the tapered tube 4, thereby greatly improving the welding efficiency.

[0042] The above are only preferred embodiments of the present invention. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These should also be regarded as the protection scope of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A positioning tool for variable diameter flange processing, characterized in that: include: Processing rack; A concentric locking unit, which is arranged on the inner side of the processing frame and connected to the processing frame, and is used to cooperate with the processing frame to realize the center limit of the small flange and the large flange, and realize the synchronous positioning and locking of the tapered tube between the small flange and the large flange; An adaptive welding unit, which is arranged outside the concentric locking unit and connected to the processing frame, and is used to cooperate with the concentric locking unit to realize synchronous welding of the small flange and the tapered tube, and the large flange and the tapered tube; Wherein, the concentric locking unit includes: a rotary positioning component, a clamping and limiting component, a synchronous energy supply component and an automatic rotation component. The rotary positioning component is connected to the bottom inner wall of the processing frame, and is used to cooperate with the processing frame to support the small flange and complete the positioning of the small flange. The rotary positioning component is also connected to the synchronous energy supply component arranged on the processing frame, and is used to cooperate with the synchronous energy supply component to extrude and limit the conical tube located outside the top end of the small flange, so as to achieve a tight connection between the small flange and the conical tube. The synchronous energy supply component is also connected to the clamping and limiting component arranged on the top wall of the processing frame. The component is rotatably connected to the wall of the processing frame and is arranged opposite to the rotating positioning component, so as to cooperate with the synchronous energy supply component to press the large flange located on the outside of the top end of the tapered tube, and complete the limiting of the large flange, so as to realize the concentricity of the small flange and the large flange. The processing frame is also provided with an automatic rotating component, which is connected to the rotating positioning component and the clamping and limiting component, so as to drive the rotating positioning component and the clamping and limiting component to realize the synchronous rotation of the small flange, the tapered tube and the large flange, and cooperate with the adaptive welding unit to complete the synchronous welding of the small flange and the tapered tube, and the large flange and the tapered tube.

2. The positioning tool for variable diameter flange processing according to claim 1 is characterized in that: The rotary positioning assembly comprises: a supporting truncated table, a positioning splint, an annular sleeve, a supporting column, a piston groove, a vent pipe, a telescopic member and an extrusion locking assembly, wherein the supporting column is rotatably connected to the inner wall of the bottom end of the processing frame, an annular sleeve fixedly connected to the processing frame is arranged around the outer side of the supporting column, an annular opening is arranged on the cylinder wall on the side where the annular sleeve is connected to the supporting column, a vent pipe fixedly connected to the supporting column is arranged on the inner side of the annular opening, and the vent pipe is connected to the piston groove arranged on the inner side of the supporting column, the annular sleeve is also connected to the synchronous energy supply assembly, and is used to cooperate with the synchronous energy supply assembly to realize the flow of air inside the piston groove, a supporting truncated table is fixedly connected to the outer side of the top end of the supporting column, a plurality of positioning splints are slidingly connected on the shell wall of the top end of the supporting truncated table, the positioning splints are distributed in an annular shape and equidistantly, and are connected to the supporting truncated table through a telescopic member, and the telescopic member is used to realize the clamping and limiting of the small flange located on the supporting truncated table by the telescopic member, and an extrusion locking assembly connected to the piston groove is also arranged on the supporting truncated table, and is used to cooperate with the air flowing inside the piston groove to realize the extrusion locking of the conical tube located on the small flange.

3. The positioning tool for variable diameter flange processing according to claim 2 is characterized in that: The extrusion locking assembly comprises: a lifting ring, a fixed rod, a connecting slide rod, a fixed column, a rotating rod, a control block, a rotating gear, a connecting frame and a locking ball. The lifting ring is slidably connected to the inner side of the piston groove, and a fixed rod is fixedly connected to the outer side of the top of the lifting ring. A connecting slide rod is slidably connected to the inner side of the fixed rod. One end of the connecting slide rod is connected to the fixing rod through a spring, and the other end is fixedly connected to the outer side of the control block. A fixed column is provided on the outer cover of the control block. A plurality of rotating rods are rotatably connected to the shell wall of the fixed column. The rotating rods are equidistantly distributed in a ring shape and a connecting frame is fixedly connected to the outer side. The other end of the connecting frame is fixedly connected to the locking ball. A rotating gear is also fixedly connected to the outer side of the rotating rod. The rotating gear is meshed with a regulating tooth fixedly connected to the control block, which is used to cooperate with the lifting and lowering of the control block to drive the rotating rod to rotate, so as to realize the extrusion locking of the conical tube by the locking ball.

4. The positioning tool for variable diameter flange processing according to claim 3 is characterized in that: The clamping and limiting assembly includes: a supporting rotating tube, a sealing ring, a control rod, a synchronous frame, a connecting seat, a movable guide rod, a pressing plate, an induction tube, a pressure regulating piece, a pressure guiding tube, a limiting splint, a movable seat, an induction groove and an induction ring. The supporting rotating tube is rotatably connected to the top frame wall of the processing frame, and the top tube wall is connected to the synchronous energy supply assembly. A sealing ring is provided for sliding connection on the inner side of the supporting rotating tube, a control rod is fixedly connected to the outer side of the bottom end of the sealing ring, and a movable guide rod is provided for sliding connection on the inner side of the other end of the control rod. A spring is fixedly connected between the movable guide rod and the control rod, and the other end is fixedly connected to the pressing plate for cooperating with the synchronous energy supply assembly to realize pressing of the large flange located on the outer side of the top end of the conical tube. A plurality of synchronous frames are also fixedly connected to the outer side of the control rod, and the synchronous frames are fixedly connected to the outer side of the supporting rotating tube. The connecting seat is slidably connected to realize the synchronous rotation of the supporting rotating tube and the control rod, an induction tube fixedly connected to the pressing plate is arranged between the synchronous frame and the pressing plate, and a pressure regulating piece compatible with the induction tube is also fixedly connected to the synchronous frame, for cooperating with the synchronous frame to realize the synchronous rotation of the pressing plate and the supporting rotating tube. The induction tube is fixedly connected to the pressure guiding tube arranged on the inner side of the pressing plate, and a movable seat slidably connected to the shell wall of the pressing plate is arranged on the outer side of the other end of the pressure guiding tube, and a sensing groove is arranged on the inner side of the movable seat, and an induction ring slidably connected to the sensing groove is fixedly connected on the outer wall of the pressure guiding tube, a spring is fixedly connected between the induction ring and the movable seat, and a limiting clamping plate slidably connected to the shell wall of the bottom end of the pressing plate is fixedly connected to the outer side of the bottom end of the movable seat for clamping and fixing the large flange in cooperation with the movement of the movable seat.

5. The positioning tool for variable diameter flange processing according to claim 4 is characterized in that: The synchronous energy supply component includes: a control box, a servo motor, a bidirectional screw, a control board, a balance box, a pressure pipe, a connecting conduit, a transmission box, a control pipe and a pressure-stabilizing conduit. The control box is fixedly connected to the processing frame, and a servo motor is fixedly connected to the bottom of the inner side of the control box. The output end of the servo motor is fixedly connected to the bidirectional screw. The outer sides of both ends of the bidirectional screw are respectively threadedly connected with a control board and a regulating board that are slidably connected to the inner wall of the control box, which are used to cooperate with the rotation of the bidirectional screw to drive the control board and the regulating board to move synchronously in opposite directions. A balance box is fixedly connected to the inner side of the top of the control box, and a pressure pipe fixedly connected to the balance box is arranged between the balance box and the control board. The inner sliding connection of the pressure pipe A pressure transmission piece fixedly connected to the control panel is provided, and the box wall at the other end of the balance box is connected to the connecting conduit, and the other end of the connecting conduit is connected to the supporting rotating tube, which is rotatably connected to the tube wall at the top of the supporting rotating tube, and is used to cooperate with the movement of the pressure transmission piece on the inner side of the pressure transmission tube to realize the pressing of the clamping limit assembly on the large flange, and a transmission box is fixedly connected to the bottom of the inner side of the control box, and a control tube fixedly connected to the transmission box is provided between the transmission box and the regulating plate, and a control piece fixedly connected to the regulating plate is slidably connected to the inner side of the control tube, and the box wall at the other end of the transmission box is connected to the annular sleeve through a pressure-stabilizing conduit, and is used to cooperate with the movement of the control piece on the inner side of the control tube to drive the rotating positioning assembly to realize the positioning and locking of the conical tube.

6. The positioning tool for variable diameter flange processing according to claim 5 is characterized in that: The automatic rotation component includes: a driving motor, a driving rod and a synchronization rod. The driving motor is fixedly connected to the outside of the top end of the processing frame, and the output end of the driving motor is fixedly connected to the driving rod. A synchronization rod rotatably connected to the processing frame is arranged on the outside of the driving rod. The synchronization rod and the driving rod are connected by a synchronization member. The driving rod and the supporting rotating tube, the synchronization rod and the supporting column are all connected by a belt transmission member, which is used to cooperate with the driving rod to synchronously drive the small flange and the large flange to rotate.

7. The positioning tool for variable diameter flange processing according to claim 1 is characterized in that: The adaptive welding unit comprises: a mounting frame, a telescopic member, an adjusting plate, a lifting frame, a positioning member and a welding gun. The mounting frame is fixedly connected to the outside of the processing frame, and the lifting frame is symmetrically arranged on the inside of the mounting frame. The lifting frames on both sides are fixedly connected to the outside of one end away from each other and the positioning member is fixedly connected, and the other end of the positioning member is fixedly connected to the mounting frame. The welding guns are arranged on the outside of the opposite end of the lifting frames on both sides, and the adjusting plate is fixedly connected to the outside of the welding gun, and the telescopic member is fixedly connected between the adjusting plate and the lifting frame.

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