Plasma welding equipment for processing bimetal composite pipe

Abstract

The invention relates to the technical field of plasma welding, in particular to plasma welding equipment for bimetal composite pipe machining, which comprises a horizontally arranged support mounting plate, two groups of displacement support material guide modules, two groups of displacement clamping and fixing modules and a rotary welding mechanism, and the rotary welding mechanism comprises a supporting mounting ring and an adjusting welding module. The plasma welding equipment is highly integrated and automatic, the whole-process integrated operation of pipe feeding, aligning, clamping and welding is achieved, the efficiency and quality are remarkably improved, the equipment has good adaptability, pipes of different lengths and diameters are stably treated through adjustable supporting and a quick-changing clamping module, and the production efficiency is improved. The multi-degree-of-freedom welding mechanism can accurately adjust the position and the angle, it is guaranteed that girth welding is accurate and uniform, the overall structure is stable, operation is convenient and fast, and high-quality welding of the bimetal composite pipe is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plasma welding, in particular to a plasma welding equipment for double-metal composite pipe processing. BACKGROUND

[0002] Double-metal composite pipe is a composite pipe material obtained by combining two different metals in a metallurgical or mechanical way, which realizes performance complementation and cost optimization. It has been widely used in fields such as petroleum, chemical industry, and ocean engineering, which have extremely high requirements for the reliability and service life of pipeline systems. The service environment is usually harsh, involving high pressure, corrosive medium or complex load. Therefore, the quality of the girth weld at the connection becomes the absolute key link to determine the safety and service life of the entire pipeline system.

[0003] However, at the present stage, the girth weld in the processing and connection process of double-metal composite pipe mainly relies on traditional welding equipment and process. These existing technologies have exposed many defects in practice:

[0004] Firstly, there is a serious lack of automation and integration. The existing welding process is usually divided into multiple discrete steps: the pipe material needs to be temporarily fixed by an additional support frame, then roughly centered by manual or simple mechanical devices, clamped by independent clamps, and finally welded by a welding execution mechanism. This multi-device, multi-process operation mode leads to a long production line, large floor area, and the need for a large amount of manual intervention, resulting in low overall welding efficiency. More seriously, in the conversion and adjustment process of multiple processes, the centering accuracy of the pipe opening is easily deviated, and the loss of initial centering accuracy will directly lead to defects such as misalignment, incomplete penetration, or uneven weld formation, which poses a serious hidden danger to the long-term safe operation of the pipeline.

[0005] Secondly, the existing equipment has poor applicability and flexibility, making it difficult to adapt to complex production conditions. In actual production, the pipe material to be welded has multiple specifications in length and diameter. For long pipes, the existing equipment lacks effective guiding and supporting feeding mechanisms, and the pipe material is prone to sagging and deviation due to its own weight, making precise centering extremely difficult. For short pipes, special clamps often need to be customized, which has low universality. At the same time, when the pipe diameter changes, the existing clamping and supporting mechanisms are tedious to adjust, and even the entire clamp module needs to be replaced, which consumes a lot of time and effort, seriously affecting the continuity of production and equipment utilization, and cannot meet the needs of modern flexible manufacturing.

[0006] Moreover, there is a significant shortcoming in the precise control of the welding process. The bimetallic composite pipe involves two different base materials, which differ in physical and chemical properties such as melting point, thermal conductivity, and thermal expansion coefficient, which puts high requirements on the control of welding heat input. The welding torch of traditional welding equipment can only perform fixed circumferential movement, and it is difficult to adjust the relative position, angle, and heat source energy distribution between the welding torch and the weld in real time and flexibly during the welding process. This results in the inability to apply different heat inputs to the two sides of the base material when welding dissimilar metals, which easily causes the high-melting-point side to be unmelted or the low-melting-point side to be burned and melted, and harmful intermetallic compounds are easily produced in the weld area, reducing the mechanical properties and corrosion resistance of the joint. In addition, if the spatter and slag generated during welding cannot be effectively guided through angle control, they are extremely easy to splash onto the equipment body, causing equipment damage and increasing maintenance costs.

[0007] Finally, the clamping technology of existing equipment also has limitations. In order to provide sufficient clamping force, traditional clamps are often designed to be too rigid, lacking the necessary cushioning and adaptive ability, which easily causes damage such as indentations and scratches on the inner liner or outer surface of the composite pipe during finishing. This problem is particularly prominent when clamping thin-walled or stainless steel cladding.

[0008] The present application aims to solve the technical problems existing in the prior art. To this end, a plasma welding equipment for bimetallic composite pipe processing is proposed. SUMMARY

[0009] The present application aims to provide a plasma welding equipment for bimetallic composite pipe processing to solve the technical problems existing in the prior art.

[0010] The above technical solution has the following beneficial effects:

[0011] The plasma welding equipment for bimetallic composite pipe processing provided by the present application comprises a horizontally arranged support mounting plate, a raised mounting plate arranged at the middle position of the support mounting plate, a fixed mounting plate arranged at each corner of the support mounting plate, a fixed mounting hole arranged on each fixed mounting plate, a guide displacement mechanism arranged on the support mounting plate on both sides of the raised mounting plate, the guide displacement mechanism comprising a displacement moving belt horizontally arranged at the middle position of the upper side of the support mounting plate, two sets of displacement mounting plates arranged opposite above the displacement moving belt; two limiting guide holes symmetrically arranged on the front and back of the support mounting plate in cooperation with the displacement moving belt, a limiting guide column arranged on the lower side of each displacement mounting plate in cooperation with the limiting guide hole, a drive guide wheel symmetrically arranged on the displacement mounting plate opposite the displacement moving belt, the drive guide wheel always in contact with the displacement moving belt; and further comprising:

[0012] Two sets of displacement support material guiding modules are installed on the displacement mounting plates away from the raised mounting plate.

[0013] Two groups of variable position clamping fixing modules are installed on the variable position mounting plate close to the convex mounting plate.

[0014] The rotating welding mechanism is fixed on the convex mounting plate and comprises a support mounting ring and an adjusting welding module.

[0015] As a further scheme of the present application, the variable position support material guiding module comprises a support cross frame arranged at the upper end of the variable position mounting plate, a lifting cross frame is oppositely arranged above the support cross frame, two groups of driving lifting columns and two groups of guiding lifting columns are symmetrically arranged between the support cross frame and the lifting cross frame, and the two ends of the driving lifting columns and the guiding lifting columns are connected with the support cross frame and the lifting cross frame respectively.

[0016] As a further scheme of the present application, two groups of synchronous rotating columns are symmetrically arranged above the lifting cross frame, the synchronous rotating columns are rotatably installed on the lifting cross frame through a fixing frame, and a rotating cambered surface plate is arranged on each synchronous rotating column.

[0017] As a further scheme of the present application, a plurality of material guiding grooves are arranged at equal angles on the inner side of the rotating cambered surface plate, and a plurality of material guiding rollers are arranged at equal intervals in the material guiding grooves.

[0018] As a further scheme of the present application, the variable position clamping fixing module comprises a C-shaped mounting frame arranged above the variable position mounting plate, a limiting guiding mounting cylinder is arranged at the upper end of the variable position mounting plate, a limiting guiding mounting column is arranged at the lower end of the C-shaped mounting frame in cooperation with the limiting guiding mounting cylinder, limiting mounting grooves are symmetrically arranged at one end of the limiting guiding mounting cylinder, conductive columns are symmetrically arranged at the other end of the limiting guiding mounting cylinder, limiting mounting pieces are arranged at one end of the limiting guiding mounting column in cooperation with the limiting mounting grooves, and conductive holes are arranged at the other end of the limiting guiding mounting column in cooperation with the conductive columns.

[0019] As a further scheme of the present application, three groups of swing rotating shafts are arranged at equal angles on the inner side of the C-shaped mounting frame through a fixing frame, a swing telescopic rod is arranged on each swing rotating shaft, and an arc surface clamping plate is arranged at the end of the swing telescopic rod.

[0020] As a further scheme of the present application, an expanding arc surface rubber plate is arranged on the inner side of the arc surface clamping plate, a reset spring is symmetrically arranged at the end of the swing telescopic rod, and the two ends of the reset spring are connected with the swing telescopic rod and the arc surface clamping plate respectively.

[0021] As a further scheme of the present application, a limiting guiding ring is arranged on the inner side of the support mounting ring, a rotating variable position cylinder is arranged in cooperation with the limiting guiding ring, and a plurality of groups of rotating variable position rollers are symmetrically arranged at the two ends of the rotating variable position cylinder.

[0022] As a further scheme of the present application: the adjusting welding module is arranged on the rotating displacement cylinder, and the rotating displacement cylinder is provided with a rotating installation disc on one side, and a driving rotating column is arranged on one side of the rotating installation disc through a mounting frame, an arc-shaped connecting rod is arranged on the driving rotating column, a self-rotating motor is arranged at the outer end of the arc-shaped connecting rod, a self-rotating installation disc is arranged on the self-rotating motor through a rotating shaft, an adjusting installation disc is arranged on one side of the self-rotating installation disc in a facing manner, and a plurality of adjusting telescopic columns are arranged at equal angles between the self-rotating installation disc and the adjusting installation disc, and the two ends of the adjusting telescopic column are rotatably installed on the self-rotating installation disc and the adjusting installation disc respectively.

[0023] As a further scheme of the present application: the other side of the rotating installation disc is provided with a limiting rotating column, the cylinder wall of the rotating displacement cylinder is matched with the limiting rotating column to form a limiting rotating groove, and two groups of arc-shaped deflection racks are symmetrically arranged on the edge of the rotating installation disc.

[0024] As a further scheme of the present application: the one side of the adjusting installation disc is provided with a welding nozzle through a communication installation cover, and a gas supply connecting pipe, a circulating liquid supply pipe and a power supply line are arranged on one side of the communication installation cover.

[0025] Compared with the prior art, the present application has the following advantages:

[0026] 1. High integration and automation, improving welding efficiency and quality

[0027] The device integrates multiple functional modules such as guiding displacement, supporting material guiding, clamping and fixing, and rotating welding, realizes full-process integrated operation from pipe material feeding, alignment, clamping to welding, has high automation, realizes automatic alignment and movement of the metal pipe through driving guide wheels and displacement moving belts, realizes automatic adjustment of welding parameters through the adjusting welding module, reduces manual intervention, greatly improves the welding efficiency, and guarantees the stability of the welding process and the uniformity of the weld quality.

[0028] 2. Excellent applicability and flexibility, suitable for various working conditions

[0029] Supporting different length pipes: through the cooperative work of the displacement supporting material guiding module and the displacement clamping and fixing module, long metal pipes can be processed, and short metal pipes can also be directly processed.

[0030] Supporting different diameter pipes: the synchronous rotating column and the rotating cam plate in the displacement supporting material guiding module can adjust the angle, and the swing telescopic rod and the cam clamping plate in the displacement clamping and fixing module can be adjusted in multiple directions, so that the device can stably clamp and weld double-metal composite pipes of various diameter specifications.

[0031] Modular design facilitates replacement: The C-shaped mounting frame and other clamping components adopt quick-release design, enabling quick replacement of clamping assemblies of different sizes, further broadening the processing range of the equipment and improving the utilization rate of the equipment.

[0032] 3. Precise alignment and stable clamping ensure welding accuracy

[0033] The height of the pipe is accurately adjusted by driving the lifting column, and the horizontal movement of the pipe is controlled by driving the guide wheel and the displacement moving belt, ensuring that the pipe openings of the two metal pipes to be welded are accurately aligned in the support mounting ring, laying a foundation for forming high-quality welds.

[0034] The use of multiple sets of arc clamping plates with return springs and expanded arc rubber plates provides uniform, flexible, and stable clamping force, effectively fixing the pipe and preventing movement or vibration during welding, while avoiding damage to the pipe surface.

[0035] 4. Flexible and controllable welding process optimizes welding results

[0036] The welding module has multiple degrees of freedom adjustment capability: the welding distance can be initially adjusted by driving the rotating column, and the welding angle and distance can be accurately fine-tuned by adjusting the telescopic column, so that the welding torch is always in the best working position.

[0037] The welding torch can move circumferentially along the weld to achieve continuous and complete girth welding.

[0038] The unique deflection function can deflect the welding torch angle, allowing flexible adjustment of the energy distribution of the plasma arc on two pipes of different materials, which not only better adapts to the welding process requirements of dissimilar metals, but also effectively controls the welding pool, avoids damage to the equipment caused by molten slag dropping, and further improves the welding quality.

[0039] 5. Stable structure, convenient operation

[0040] The overall structure of the equipment is designed reasonably, and through the support mounting plate, fixed mounting plate, limiting guide column / hole, etc., a stable frame is formed, ensuring the rigidity and stability of the equipment during operation.

[0041] Each functional module has clear division of labor and clear operation process, whether it is a long pipe or a short pipe, there is a standardized operation procedure, reducing the skill requirements and labor intensity of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0043] Figure 1 It is a front side view of a plasma welding equipment for bimetallic composite pipe processing.

[0044] Figure 2 It is a rear side view of a plasma welding equipment for bimetallic composite pipe processing.

[0045] Figure 3 It is a partial sectional view of a plasma welding equipment for bimetallic composite pipe processing.

[0046] Figure 4 It is a three-dimensional structure schematic diagram of a variable position supporting and guiding module in a plasma welding equipment for bimetallic composite pipe processing.

[0047] Figure 5 It is a three-dimensional structure schematic diagram of a variable position supporting and guiding module in a plasma welding equipment for bimetallic composite pipe processing.

[0048] Figure 6 It is a three-dimensional structure schematic diagram of a variable position supporting and guiding module in a plasma welding equipment for bimetallic composite pipe processing.

[0049] Figure 7 It is a three-dimensional structure schematic diagram of a variable position supporting and guiding module in a plasma welding equipment for bimetallic composite pipe processing.

[0050] Figure 8 It is a three-dimensional structure schematic diagram of a variable position supporting and guiding module in a plasma welding equipment for bimetallic composite pipe processing. Figure 6 It is an enlarged schematic diagram of a in a.

[0051] Figure 9 It is an enlarged schematic diagram of b in a. Figure 7 It is an enlarged schematic diagram of b in a.

[0052] Figure 10 It is a partial sectional view of a rotating welding mechanism in a plasma welding equipment for bimetallic composite pipe processing.

[0053] Figure 11 It is a three-dimensional structure schematic diagram of a variable position supporting and guiding module in a plasma welding equipment for bimetallic composite pipe processing.

[0054] Figure 12It is a local section view of the adjusting welding module at the rotating displacement cylinder in the plasma welding equipment for processing bimetallic composite pipe.

[0055] Figure 13 It is an enlarged view of c in Figure 11

[0056] Figure 14 It is an enlarged view of d in Figure 12

[0057] 1-supporting mounting plate, 2-fixing mounting plate, 3-displacement moving belt, 4-limiting guide hole, 5-supporting cross, 6-displacement mounting plate, 7-driving guide wheel, 8-C-shaped mounting frame, 9-protruding mounting plate, 10-fixing mounting frame, 11-supporting mounting ring, 12-rotating cambered plate, 13-extending cambered rubber plate, 14-cambered connecting rod, 15-rotating displacement cylinder, 16-oscillating telescopic rod, 17-limiting guide column, 18-oscillating rotating shaft, 19-cambered clamping plate, 20-return spring, 21-guiding lifting column, 22-driving lifting column, 23-lifting cross, 24-synchronous rotating column, 25-guiding material chute, 26-guiding material roller, 27-limiting guide ring, 28-turning mounting disc, 29-driving rotating column, 30-rotating displacement roller, 31-cambered deflecting rack, 32-driving gear, 33-self-rotating motor, 34-self-rotating mounting disc, 35-adjusting mounting disc, 36-welding nozzle, 37-limiting rotating groove, 38-adjusting telescopic column, 39-communicating mounting cover, 40-circulating liquid supply pipe, 41-gas supply connecting pipe, 42-power supply wire, 43-limiting guide mounting cylinder, 44-limiting guide mounting column, 45-limiting mounting sheet, 46-conducting hole, 47-conducting column, 48-limiting mounting groove, 49-limiting rotating column. DETAILED DESCRIPTION

[0058] Embodiments of the present application are described in detail below with reference to several examples illustrated in the attached drawings, wherein the same or similar components have the same or similar designations throughout. The embodiments described below are exemplary and are intended to be illustrative of the present application and are not to be construed as limiting the present application.

[0059] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For purposes of simplicity, the description below will be directed primarily towards components and settings of specific examples. Of course, it is contemplated that the application can be practiced with many types of examples beyond those explicitly described herein. Furthermore, it is contemplated that the application can be practiced with different embodiments in different examples. The following detailed description is, therefore, not to be taken in a limiting sense, as the scope of the present application is defined by the appended claims and equivalents thereof.

[0060] Embodiment one, please refer to Figures 1-3 ,​​Figure 5 The plasma welding equipment for bimetal composite pipe processing in the embodiment of the application comprises a horizontally arranged support mounting plate 1, a protruding mounting plate 9 arranged at the middle position of the support mounting plate 1, a fixed mounting plate 2 arranged at each corner of the support mounting plate 1, and a fixed mounting plate 2 also symmetrically arranged on the protruding mounting plate 9, a fixed mounting hole arranged on each fixed mounting plate 2, a guide displacement mechanism arranged on the support mounting plate 1 on the two sides of the protruding mounting plate 9, and the guide displacement mechanism comprising a displacement moving belt 3 horizontally arranged at the middle position of the upper side of the support mounting plate 1 and two sets of displacement mounting plates 6 oppositely arranged above the displacement moving belt 3.

[0061] Two limiting guide holes 4 are symmetrically arranged on the support mounting plate 1 in cooperation with the displacement moving belt 3, a limiting guide column 17 is arranged on the lower side of each displacement mounting plate 6 in cooperation with the limiting guide hole 4, a drive guide wheel 7 is symmetrically arranged on the displacement mounting plate 6 opposite to the displacement moving belt 3, and the drive guide wheel 7 is always in contact with the displacement moving belt 3.

[0062] Firstly, the displacement support material guiding module and the displacement clamping and fixing module are installed in cooperation with the displacement mounting plate 6, then two metal pipes are respectively placed on the two sets of displacement support material guiding modules and guided to pass through the displacement clamping and fixing module, until the metal pipes at two ends are in contact, then the displacement support material guiding module is adjusted, so that the pipe openings of the metal pipes at two ends are oppositely arranged in the support mounting ring 11, at this time, the displacement clamping and fixing module clamps and fixes the metal pipes, so that the metal pipes are always in the state of opposite contact, finally, the annular welding operation is performed through the adjustment of the welding module, and the welding of the bimetal pipe is completed.

[0063] In the embodiment two, on the basis of the embodiment one, please refer to Figures 4-9 In the embodiment of the application, the two sets of displacement support material guiding modules are installed on the displacement mounting plates 6 away from the protruding mounting plate 9,

[0064] The displacement support material guiding module comprises a support cross 5 arranged on the upper end of the displacement mounting plate 6, a lifting cross 23 oppositely arranged above the support cross 5, two sets of drive lifting columns 22 and two sets of guide lifting columns 21 symmetrically arranged between the support cross 5 and the lifting cross 23, and the two ends of the drive lifting columns 22 and the guide lifting columns 21 are respectively connected with the support cross 5 and the lifting cross 23.

[0065] Two sets of synchronous rotating columns 24 are symmetrically arranged above the lifting cross 23, the synchronous rotating columns 24 are rotatably installed on the lifting cross 23 through a fixed frame, and a rotating cambered plate 12 is arranged on each synchronous rotating column 24.

[0066] The rotating arc panel 12 is provided with a plurality of material guide grooves 25 inside at equal angles, and a plurality of material guide rollers 26 are provided inside the material guide grooves 25 at equal intervals.

[0067] Two sets of variable-position clamping and fixing modules are installed on the variable-position mounting plate 6 close to the protruding mounting plate 9.

[0068] The variable-position clamping and fixing module comprises a C-shaped mounting frame 8 provided above the variable-position mounting plate 6, a limiting guide mounting cylinder 43 provided at the upper end of the variable-position mounting plate 6, a limiting guide mounting column 44 provided at the lower end of the C-shaped mounting frame 8 in cooperation with the limiting guide mounting cylinder 43, a limiting mounting groove 48 provided at one end of the limiting guide mounting cylinder 43 in symmetry, a conductive column 47 provided at the other end of the limiting guide mounting cylinder 43 in symmetry, a limiting mounting piece 45 provided at one end of the limiting guide mounting column 44 in cooperation with the limiting mounting groove 48, and a conductive hole 46 provided at the other end of the limiting guide mounting column 44 in cooperation with the conductive column 47.

[0069] Three sets of swing shafts 18 are provided at equal angles inside the C-shaped mounting frame 8 through a fixing frame, a swing telescopic rod 16 is provided on each swing shaft 18, and an arc clamping plate 19 is provided at the end of each swing telescopic rod 16.

[0070] An expansion arc rubber plate 13 is provided inside the arc clamping plate 19, a return spring 20 is provided at the end of the swing telescopic rod 16 in symmetry, and the two ends of the return spring 20 are connected to the swing telescopic rod 16 and the arc clamping plate 19 respectively.

[0071] When the metal pipe to be welded is long, the metal pipe to be welded is first placed on the rotating arc panel 12, then the rotation of the material guide roller 26 is matched to facilitate the guiding and feeding of the metal pipe and the adjustment of the position, and the angle of the rotating arc panel 12 is adjusted through the synchronous rotating column 24, so that metal pipes of different diameters can be positioned in the middle position of the two rotating arc panels 12 and a certain clamping force is provided for fixation, and then the height adjustment of the lifting cross 23 and the metal pipe thereon is realized by driving the telescopic lifting column 22 to extend or retract.

[0072] After reaching the preset height, the guide wheel 7 is driven to start rolling on the variable-position moving belt 3, the movement of the variable-position mounting plate 6 is realized, the rotating arc panel 12 moves synchronously, the metal pipes on both sides move towards each other until the ends of the metal pipes are in contact with each other in the supporting mounting ring 11, then the swing shaft 18 is driven to rotate, the angle of the swing telescopic rod 16 thereon is adjusted, the length of the swing telescopic rod 16 is adjusted synchronously, until the arc clamping plate 19 at the end thereof is in contact with the metal pipe, then the return spring 20 is matched to provide a stable supporting force to the arc clamping plate 19, so that the expansion arc rubber plate 13 on the arc clamping plate 19 can provide sufficient deformation and contact area to clamp and fix the metal pipe more comprehensively.

[0073] When the metal pipe to be welded is short, the metal pipe is directly placed in the C-shaped mounting frame 8, the swing shaft 18 is driven to rotate the swing extension rod 16, and the swing extension rod 16 is adjusted to move the cambered clamping plate 19 towards the metal pipe until the cambered clamping plate 19 and the extended cambered rubber plate 13 thereon are attached to the metal pipe, and clamping and fixing are completed.

[0074] Then the guide wheel 7 is driven to roll on the displacement moving belt 3, the displacement mounting plate 6 and the clamped and fixed metal pipe on the C-shaped mounting frame 8 are moved until the end of the metal pipe is opposite to the contact in the support mounting ring 11.

[0075] The limiting guide mounting cylinder 43 and the limiting guide mounting column 44 cooperate to realize quick disassembly of the C-shaped mounting frame 8, and the conductive column 47 and the conductive hole 46 cooperate to realize installation power supply, so that different sizes of the C-shaped mounting frame 8, the cambered clamping plate 19 and the extended cambered rubber plate 13 can be replaced to adapt to metal pipes of different sizes.

[0076] In the embodiment, the rotating welding mechanism is fixed on the protruding mounting plate 9 and includes the support mounting ring 11 and the adjusting welding module. Figures 10-14

[0077] The inner side of the support mounting ring 11 is provided with the limiting guide ring 27, the limiting guide ring 27 is provided with the rotating displacement cylinder 15, and the two ends of the rotating displacement cylinder 15 are symmetrically provided with a plurality of groups of rotating displacement rollers 30.

[0078] The adjusting welding module is arranged on the rotating displacement cylinder 15 and includes the steering mounting disc 28 arranged on one side of the rotating displacement cylinder 15, the drive rotating column 29 arranged on one side of the steering mounting disc 28 through the mounting frame, the arc-shaped connecting rod 14 arranged on the drive rotating column 29, the self-rotation motor 33 arranged at the outer end of the arc-shaped connecting rod 14, the self-rotation mounting disc 34 arranged on the self-rotation motor 33 through the rotating shaft, the adjusting mounting disc 35 arranged opposite to one side of the self-rotation mounting disc 34, the plurality of adjusting extension columns 38 arranged at equal angles between the self-rotation mounting disc 34 and the adjusting mounting disc 35, and the two ends of the adjusting extension column 38 being rotatably mounted on the self-rotation mounting disc 34 and the adjusting mounting disc 35 respectively.

[0079] The other side of the limiting rotating column 49 is provided with the limiting rotating column 49, the cylinder wall of the rotating displacement cylinder 15 is provided with the limiting rotating groove 37 in cooperation with the limiting rotating column 49, the edge of the steering mounting disc 28 is symmetrically provided with two groups of arc-shaped deflection racks 31, and the outer side of the rotating displacement cylinder 15 is symmetrically provided with the drive gear 32 in cooperation with the arc-shaped deflection rack 31.

[0080] ​The side of the adjusting mounting disc 35 is provided with a welding torch 36 through a communication mounting cover 39, and the side of the communication mounting cover 39 is provided with a gas supply connecting pipe 41, a circulating liquid supply pipe 40 and a power supply wire 42, which are connected with the internal structure of the welding torch 36 through the communication mounting cover 39.

[0081] Firstly, the angle of the arc-shaped connecting rod 14 is adjusted by driving the rotating column 29 to preliminarily adjust the distance between the welding torch 36 and the metal pipe, and then the length of the telescopic column 38 is adjusted to realize the adjustment of the deflection angle of the adjusting mounting disc 35 and the distance between the adjusting mounting disc 35 and the rotating mounting disc 34, so that the welding torch 36 is in the optimal welding distance and welding angle.

[0082] Finally, the rotating displacement roller 30 is rotated to make the rotating displacement cylinder 15 and the welding torch 36 rotate on the limiting guide ring 27, and the complete welding of the metal pipe is completed.

[0083] The driving gear 32 can also be driven to engage the transmission arc-shaped deflection rack 31 to make the rotating mounting disc 28 realize axial rotation under the cooperation of the limiting rotating column 49 and the limiting rotating groove 37, so that the welding torch 36 realizes angular deflection, and the sizes of the plasma arc sprayed by the welding torch 36 on the two metal pipe ends to be welded are different, which can adapt to the welding operation of metal pipes of different materials on one hand, and can avoid the welding slag from falling on the equipment and causing damage on the other hand.

[0084] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and the features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0085] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A plasma welding device for processing bimetallic composite pipes, comprising a horizontally arranged support mounting plate, a raised mounting plate at the center of the support mounting plate, fixed mounting plates at each of the four corners of the support mounting plate, and fixed mounting plates symmetrically arranged on the raised mounting plates, each fixed mounting plate having a fixed mounting hole, characterized in that... The supporting mounting plates on both sides of the protruding mounting plate are provided with a guide displacement mechanism. The guide displacement mechanism includes a displacement moving band horizontally arranged at the middle position on the upper side of the supporting mounting plate, and two sets of displacement mounting plates are arranged directly above the displacement moving band. It also includes: Two sets of displacement support material guiding modules are installed on the displacement mounting plate away from the protruding mounting plate; The displacement support and material guiding module includes a support cross on the upper end of the displacement mounting plate, and a lifting cross is positioned directly above the support cross. Two sets of synchronous rotating columns are symmetrically arranged above the lifting cross. The synchronous rotating columns are rotatably installed on the lifting cross through a fixed frame. Each synchronous rotating column is provided with a rotating arc panel. Several guide grooves are provided at equal angles on the inner side of the rotating arc panel. Several guide rollers are provided at equal intervals in the guide grooves. Two sets of displacement clamping and fixing modules are installed on the displacement mounting plate near the protruding mounting plate. The displacement clamping and fixing module includes a C-shaped mounting frame set above the displacement mounting plate and a limit guide mounting cylinder set at the upper end of the displacement mounting plate. The inner side of the C-shaped mounting frame is provided with three sets of swing shafts at equal angles through a fixing frame. Each swing shaft is provided with a swing telescopic rod, and the end of each swing telescopic rod is provided with an arc-shaped clamping plate. The rotating welding mechanism, fixed on the raised mounting plate, includes a support mounting ring and an adjusting welding module. The support mounting ring is mounted on the raised mounting plate via a fixed mounting bracket. The inner side of the support mounting ring is provided with a limit guide ring, and a rotating displacement cylinder is provided in conjunction with the limit guide ring. Several sets of rotating displacement rollers are symmetrically arranged at both ends of the rotating displacement cylinder. The adjustment welding module is set on the rotating displacement cylinder, including a steering mounting plate set on one side of the rotating displacement cylinder, a drive rotating column set on one side of the steering mounting plate via a mounting bracket, an arc-shaped connecting rod set on the drive rotating column, a self-rotating motor set at the outer end of the arc-shaped connecting rod, a self-rotating mounting plate set on the self-rotating motor via a rotating shaft, and an adjustment mounting plate set on one side of the self-rotating mounting plate. On the other side of the steering mounting plate, a limiting rotating column is provided. The cylinder wall of the rotating displacement cylinder is provided with a limiting rotating groove in cooperation with the limiting rotating column. Two sets of arc-shaped deflection racks are symmetrically provided on the edge of the steering mounting plate. Drive gears are symmetrically provided on the outer side of the rotating displacement cylinder in cooperation with the arc-shaped deflection racks. A welding nozzle is provided on one side of the adjusting mounting plate through a connecting mounting cover.

2. The plasma welding equipment for processing bimetallic composite tubes according to claim 1, characterized in that, The support mounting plate is symmetrically provided with two limiting guide holes in conjunction with the displacement moving belt. The lower side of the displacement mounting plate is provided with limiting guide posts in conjunction with the limiting guide holes. The displacement mounting plate opposite the displacement moving belt is symmetrically provided with drive guide wheels, which are always in contact with the displacement moving belt.

3. The plasma welding equipment for processing bimetallic composite pipes according to claim 1, characterized in that, Two sets of drive lifting columns and two sets of guide lifting columns are symmetrically arranged between the supporting cross and the lifting cross. The two ends of the drive lifting columns and guide lifting columns are connected to the supporting cross and the lifting cross, respectively.

4. The plasma welding equipment for processing bimetallic composite pipes according to claim 1, characterized in that, The lower end of the C-shaped mounting frame is equipped with a limiting guide mounting post in conjunction with the limiting guide mounting cylinder.

5. The plasma welding equipment for processing bimetallic composite pipes according to claim 4, characterized in that, One end of the limiting guide mounting cylinder is symmetrically provided with a limiting mounting groove, and the other end of the limiting guide mounting cylinder is symmetrically provided with a conductive post. One end of the limiting guide mounting post is provided with a limiting mounting piece in conjunction with the limiting mounting groove, and the other end of the limiting guide mounting post is provided with a conductive hole in conjunction with the conductive post.

6. The plasma welding equipment for processing bimetallic composite tubes according to claim 1, characterized in that, An extended arc-shaped rubber plate is provided on the inner side of the arc-shaped clamping plate.

7. The plasma welding equipment for processing bimetallic composite pipes according to claim 6, characterized in that, The ends of the swing telescopic rod are symmetrically provided with return springs, and the two ends of the return springs are respectively connected to the swing telescopic rod and the arc-shaped clamping plate.

8. The plasma welding equipment for processing bimetallic composite tubes according to claim 1, characterized in that, Several adjustable telescopic columns are provided at equal angles between the rotating mounting plate and the adjusting mounting plate, with both ends of the adjustable telescopic columns rotatably mounted on the rotating mounting plate and the adjusting mounting plate, respectively.

9. The plasma welding equipment for processing bimetallic composite tubes according to claim 1, characterized in that, One side of the connecting mounting cover is equipped with a gas supply connection pipe, a circulating liquid supply pipe, and a power supply line.

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