CN218926530U

CN218926530U - Multidimensional magnetic stirring surfacing equipment based on three-foot parallel mechanism

Info

Publication number: CN218926530U
Application number: CN202223246149.7U
Authority: CN
Inventors: 李昌; 赵晓玉; 罗丰华; 姜先晟; 冯磊; 韩兴
Original assignee: University of Science and Technology Liaoning USTL
Current assignee: University of Science and Technology Liaoning USTL
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-04-28
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to the technical field of welding equipment, in particular to multidimensional magnetic stirring surfacing equipment based on a tripodia parallel mechanism. The multi-jaw chuck clamps one end of a welded workpiece, and the plug is tightly propped against the other end of the welded workpiece; the three-degree-of-freedom welding gun pose adjusting system is arranged on a movable welding machine walking bracket, so that the x, y and z three-way position movement adjustment of the welding gun head is realized, and the probe is fixedly connected to the welding gun head; the magnetic stirring head of the magnetic stirring system is fixedly connected to a z-direction sliding guide rail of the three-degree-of-freedom welding gun pose adjusting system, multi-angle swing and rotation are realized through a three-foot parallel mechanism, and the overlaying structure is refined and the overlaying quality is improved through the multi-dimensional electromagnetic stirring effect; and the residual flux recycling system is used for recycling flux and conveying the flux to a flux hopper, so that full-automatic feeding and flux recycling are realized. And the welding process detection and defect early warning effectively reduce the welding defect generation probability, and reduce the welding cost and rejection rate.

Description

Multidimensional magnetic stirring surfacing equipment based on three-foot parallel mechanism

Technical Field

The utility model relates to the technical field of welding equipment, in particular to multidimensional magnetic stirring surfacing equipment based on a tripodia parallel mechanism.

Background

With the rapid development of modern technology, the surfacing technology is widely applied to surface repair of metal parts and industrial products as an economical and rapid process method for material surface modification, wherein surfacing of round roller products is a very important part. Welding is performed in order to increase and restore the size of the part or to obtain a special cladding of the welding surface. And in the surfacing, the welding material and the surface of the base material are melted to form a metallurgically bonded surfacing layer. The bonding strength is high, the impact resistance is good, the method is suitable for the working conditions of high stress, high variable load, high stress abrasive particle abrasion and cutting abrasion, the composition and the performance of the welding layer are adjustable, and a multifunctional coating is easy to form. The thickness of the overlaying layer can reach 2-30 mm, and the cladding efficiency is relatively high.

In industrial production, the overlaying roller is large in size, the cost of the base material is high, and the period required by overlaying processing is long. In the surfacing process, welding microscopic defects such as air holes, cracks, slag inclusion, nodulation and the like are easy to occur, so that the whole workpiece is scrapped, and huge economic loss is caused. In particular to a descaling roller on a rough rolling line in the ferrous metallurgy industry, which has bad service condition and long-term bearing of the dynamic impact effect caused by the high-pressure water erosion effect and the high-temperature billet descaling process, and has the coupling effects of high temperature, strong abrasion, multiple circulation heat, force and flow multiple field intensity. Abrasion and corrosion failure often occur, the continuous production of steel rolling is influenced, and surface strengthening or repairing treatment is required. The flux-cored wire surfacing welding containing WC hard phase is an important method for strengthening the surface of a service descaling roller product under severe conditions and enhancing the wear resistance and corrosion resistance of the product.

The existing surfacing equipment has the following defects: in the overlaying process, the action mechanism of a multi-element interface in the melting and solidification of the flux-cored wire containing WC hard phase is extremely complex, the defects of slag inclusion, air holes, cracks and the like are easily formed, and the welding rejection rate is high. Welding defects cannot be found in time in the welding process, early warning is not possible, the yield is further affected, and the cost is increased. Moreover, the existing surfacing equipment lacks effective recovery and recycling of welding flux, has high welding cost, and is deviated from the targets of carbon reaching peak and carbon neutralization advocated by the current country.

The application number CN 201820983973.5 discloses a surfacing workstation and a roller automatic surfacing repair system, which comprises a robot welding device for surfacing repair of a roller, a double-station rotary tool table for station conversion and a bracket device for feeding and discharging of the roller. Belonging to the category of conventional surfacing. Only the structure of the surfacing equipment is improved, but no report is made for the flux adding process, and the effective screening and recycling of the residual flux can not be realized. Especially, the multi-dimensional magnetic stirring effect on a submerged arc surfacing molten pool is lacking, micro defects such as cracks, air holes, slag inclusion and the like in surfacing cannot be effectively reduced, and meanwhile, process discovery and early warning on welding defects cannot be effectively carried out. The surfacing equipment disclosed in CN 200910077091.8 can perform corrosion-resistant surfacing on the inner wall of a 90-degree bent pipe in a high-temperature high-pressure corrosion medium pressure vessel. However, the submerged arc overlaying is not mentioned in the whole, and is essentially different from the submerged arc overlaying utility model proposed herein, and the recovery and recycling of the residual flux are not mentioned, and no electromagnetic disturbance is applied in the overlaying, so that the micro defects such as cracks and the like can not be effectively restrained. CN 201410617509.0 discloses a "submerged arc surfacing forming method for metal member", and provides a surfacing forming method. The generation of welding defects in the submerged arc surfacing process cannot be avoided, the recycling method of the residual flux is not mentioned, the applicable conditions of equipment are cured, surfacing operation cannot be performed on long roller products, the assistance of multi-dimensional magnetic stirring equipment is absent, and welding microscopic defects cannot be found and reduced or eliminated in the process.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides multidimensional magnetic stirring surfacing equipment based on a tripodia parallel mechanism. The multi-dimensional magnetic field stirring overlaying welding, welding process detection, defect early warning and residual flux screening recovery and automatic recycling can be realized for roller products with different lengths and diameters, the welding defect generation probability is effectively reduced, the quality of an overlaying layer is improved, the welding cost and the rejection rate are reduced, and the economic benefit is improved.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:

a multidimensional magnetic stirring surfacing equipment based on a three-foot parallel mechanism comprises a magnetic stirring system, a residual flux recycling system, a three-degree-of-freedom welding gun pose adjusting system, a movable welding machine walking bracket, a multi-jaw chuck, a plug and a probe; the multi-jaw chuck clamps one end of a welded workpiece, and the plug is tightly propped against the other end of the welded workpiece; the three-degree-of-freedom welding gun pose adjusting system is arranged on a movable welding machine walking bracket, so that the x, y and z three-way position movement adjustment of the welding gun head is realized, and the probe is fixedly connected to the welding gun head; the magnetic stirring head of the magnetic stirring system is fixedly connected to the z-direction sliding guide rail of the three-degree-of-freedom welding gun pose adjusting system, so that the welding gun head is arranged at the middle position of the two magnetic pole heads of the magnetic stirring system. The space position of the magnetic pole head is randomly adjusted through multi-angle swing and rotation of the three-foot parallel mechanism, and meanwhile, the current direction in the iron core coil is periodically changed, and a multi-dimensional magnetic field stirring effect is generated on the formed submerged arc surfacing welding molten pool. The overlaying structure is thinned through the multi-dimensional electromagnetic stirring effect, so that the overlaying quality is improved; the flux is recovered by the flux recovery and recycling system and is conveyed to the flux hopper, the flux is collected into the sieve after welding through the flux collection hopper, and the flux is sieved through the belt transmission to drive the offset crank to rotate. Realize full-automatic material loading and solder recycling.

Further, the magnetic stirring system is composed of two groups of magnetic stirring heads which are arranged side by side, the submerged arc molten pool is arranged at the middle position of the two groups of magnetic stirring heads, the magnetic stirring heads are symmetrically hung on the z-direction sliding guide rail and driven by motors respectively, and the submerged arc molten pool can move.

The single-side magnetic stirring heads are respectively driven by a rotating motor to realize movement by a tripodia parallel mechanism, so as to drive coils fixedly connected with the magnetic stirring heads to swing around an iron core in a multi-dimensional manner, the real-time positions of the stirring heads on the two sides correspond to each other, a complete magnetic field loop is formed, and Lorentz force action is generated on metal positive ions in a submerged arc surfacing welding molten pool.

Further, the stirring effect is exerted along with the multi-angle swing of the stirring head, so that the lorentz force direction is changed; meanwhile, the current transmission direction in the iron core coil is periodically adjusted, and the stirring effect is exerted from the other dimension.

The whole magnetic stirring system moves up and down along with a welding gun, and a single-side stirring head randomly adjusts the position of the magnetic stirring system so as to adapt to the technological requirements of overlaying of rollers with different diameters; the magnetic field intensity is changed by adjusting the current so as to meet the processing requirement.

Further, the system for recycling and recycling the residual flux comprises a flux recycling vibration separating screen and a flux recycling conveying system, a residual flux collecting hopper is arranged below a welded workpiece to collect the flux which is processed and falls down at one time into the flux recycling vibration separating screen, a belt is driven by a screening driving motor to drive a belt to rotate, the belt drives an eccentric wheel to rotate through a rotating shaft, and the eccentric wheel is connected with a screen body through a connecting rod to form an offset crank sliding block mechanism, so that periodic screening is realized; the bottom of the screen body is provided with a screen body rolling wheel which moves along the walking track.

Further, the screen body of the welding flux recovery vibration separation screen is arranged in an upper layer and a lower layer, welding slag and waste enter a welding slag collecting tank from the screen body of the upper layer, recoverable welding flux falls on the screen plate of the lower layer and finally falls on a lower conveying belt for welding flux recovery, the welding flux is conveyed into a feeding trolley, when the falling welding flux reaches a set quantity, a gravity sensor gives a signal to a winch motor, the winch motor drives the feeding trolley to move upwards, after the welding flux reaches a specified position, the front wheel of the trolley stops in a limiting mode, a tilting action is realized under the driving of the winch motor, and the circulating recoverable welding flux is poured into the feeding conveying belt; the winch motor is reversed, the trolley returns, and the feeding conveyor belt conveys the recovered flux to the flux hopper, so that full-automatic feeding and flux recycling are realized.

Further, the three-degree-of-freedom welding gun pose adjusting system is arranged at the top of the movable welding machine walking bracket, and the three-degree-of-freedom welding gun pose adjusting system realizes the moving adjustment of the x, y and z three-way positions of the welding gun head; the welding gun X-direction adjusting system driving motor drives the welding gun X-direction adjusting driving gear-the welding gun X-direction adjusting rack to realize X-direction linear movement, the welding gun Y-direction adjusting system driving motor drives the lead screw to realize Y-direction linear sliding, and the welding gun Z-direction adjusting system driving motor drives the lead screw to realize Z-direction linear sliding.

Further, the three-degree-of-freedom welding gun pose adjusting system is provided with a welding gun y-direction and z-direction moving frame; the 4 wire feeding rollers are uniformly distributed on the z-direction moving frame of the welding gun in an upper row and a lower row, and the wire feeding rollers are driven by a wire feeding roller driving motor to rotate so as to clamp the flux-cored wire for feeding; the welding flux hopper is fixedly connected to the welding gun y-direction moving frame, and the lower part of the welding flux hopper is connected with the lower welding gun head through a welding flux conveying hose, so that a submerged arc surfacing process is realized.

Further, the movable welding machine walking support comprises two side-by-side portal frames, the tops of the two side-by-side portal frames are fixedly connected through a top cross beam, four welding machine walking support foot rollers are arranged at the bottoms of the two side-by-side portal frames, and the welding machine walking support foot rollers are arranged on welding machine walking slide rails.

Further, the multi-jaw chuck adopts a three-jaw chuck, the top is a movable tailstock top, and the top can move; the probe adopts a phased array scanning probe.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the utility model, the magnetic field disturbance assistance is added in the surfacing process, so that the surfacing process is optimized, the generation of cracks in the surfacing process is effectively reduced, and the production efficiency is improved.

In the surfacing process, welding microscopic defects such as air holes, cracks, slag inclusion, nodulation and the like are easy to occur, so that the whole workpiece is scrapped, and huge economic loss is caused. Particularly, the descaling roller has bad service condition, and the flux-cored wire surfacing welding containing WC hard phase is an important method for strengthening the surface of the descaling roller. However, the flux-cored wire containing WC hard phase has extremely complex action mechanism of a multielement interface in overlaying welding, is easy to form defects such as slag inclusion, air holes, cracks and the like, and has high welding rejection rate. The multidimensional magnetic stirring effect is applied, so that the welding structure can be effectively refined, air bubbles can be discharged, the welding microscopic defects can be reduced, and the overlaying quality can be improved.

(2) The three-degree-of-freedom welding gun pose adjusting system can realize three-way movement of x, y and z, and meanwhile, the welding system walking bracket can walk through the foundation roller, so that the three-degree-of-freedom welding gun pose adjusting system is flexibly suitable for surfacing operation of rollers with different lengths and diameters, and the working application range is enlarged.

(3) The phased array scanning probe can timely find and early warn defects in the welding process, so that the yield is greatly improved, and the cost is saved. Meanwhile, the residual flux in the surfacing is largely dropped, the flux doped with slag and burnt out is recycled by sieving, and the production cost is effectively saved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic front view of the structure of the present utility model;

FIG. 3 is a schematic view of another perspective view of the present utility model;

FIG. 4 is a schematic diagram of a three-degree-of-freedom welding gun pose adjusting system in a three-dimensional structure;

FIG. 5 is a schematic perspective view of a magnetic stirring system according to the present utility model;

FIG. 6 is a schematic perspective view of a vibratory screen for flux recovery according to the present utility model;

FIG. 7 is a schematic view of another angular perspective view of a flux recovery vibratory screen according to the present utility model;

FIG. 8 is a schematic perspective view of a drive section of a flux recovery vibratory screen according to the present utility model;

FIG. 9 is a schematic perspective view of a magnetic stirring head according to the present utility model;

FIG. 10 is a schematic view of another perspective view of a magnetic stirring head according to the present utility model;

FIG. 11 is a ladder diagram of a PLC of the present utility model.

In the figure: 1-electric control cabinet, 2-main shaft motor, 3-welding machine tool, 4-three-jaw chuck, 5-welding flux hopper, 6-welding flux recovery upper conveyor driving motor, 7-welding flux recovery upper conveyor, 8-welding flux traveling support, 9-feeding trolley supporting frame, 10-winch, 11-winch motor, 12-wire rope, 13-feeding trolley, 14-gravity sensor, 15-feeding trolley sliding rail, 16-welding flux recovery lower conveyor, 17-welding flux recovery lower conveyor driving motor, 18-welding flux traveling support motor, 19-welding flux recovery vibration separation sieve, 20-upper conveyor support, 21-welding flux traveling support foot roller, 22-welding flux traveling sliding rail, 23-welded roller, 24-welding flux collecting groove, 25-movable tailstock top, 26-welding gun x-direction adjusting system, 27-welding gun x-direction adjusting system driving motor, 28-welding gun x-direction traveling rail, 17-welding gun x-direction traveling foot roller, 22-welding gun x-direction adjusting system 29-welding gun y direction moving frame, 30-welding gun y direction adjusting system driving motor, 31-magnetic stirring head hanging bracket, 32-magnetic stirring head, 33-welding gun head, 34-wire feeding pipe, 35-magnetic stirring head self-adjusting motor, 36-welding gun z direction adjusting system driving motor, 37-welding flux conveying hose, 38-welding wire fixing sleeve, 39-flux-cored wire, 40-wire feeding roller driving motor, 41-wire feeding roller, 42-welding gun z direction moving frame, 43-phased array scanning probe, 44-separating screen driving belt wheel, 45-separating screen driving main shaft, 46-upper layer screen body, 47-lower layer screen plate, 48-screen body rolling wheel, 49-separating screen supporting rail, 50-screening driving motor, 51-connecting rod, 52-eccentric wheel, 53-belt, 54-magnetic stirring head upper hanging bracket, 55-magnetic stirring head motor fixing arm, 56-parallel mechanism J-shaped rotating arm, 57-J-shaped rotating arm driving motor, 58-parallel mechanism U-shaped swing arm, 59-magnetic stirring head electromagnetic coil, 60-magnetic stirring head electromagnetic iron core, 61-parallel mechanism driving U-shaped rotating arm, 62-driving U-shaped rotating arm driving motor, 63-saving flux collecting hopper, 64-welding gun x-direction adjusting driving gear and 65-welding gun x-direction adjusting rack.

Detailed Description

The following detailed description of the utility model is further illustrative, but is not intended to limit the scope of the utility model:

as shown in fig. 1, 2 and 3, the multidimensional magnetic stirring surfacing equipment based on the three-foot parallel mechanism comprises a magnetic stirring system, a residual flux recycling system, a three-degree-of-freedom welding gun pose adjusting system, a movable welding machine walking bracket 8, a three-jaw chuck 4, a movable tailstock top 25, a phased array scanning probe 43, a flux hopper 5 and an electric control cabinet 1.

The main shaft motor 2, the three-jaw chuck 4 and the movable tailstock plug 25 are arranged on the welding machine tool 3, the main shaft motor 2 is connected with the three-jaw chuck 4 to drive the three-jaw chuck 4 to rotate, and the movable tailstock plug 25 is arranged on a sliding rail of the welding machine tool 3. The three-jaw chuck 4 clamps one end of the welded roller 23, and the movable tailstock plug 25 abuts against the other end of the welded roller 23.

As shown in fig. 4, 5, 9 and 10, the magnetic stirring system is composed of two groups of magnetic stirring heads 32 arranged side by side, the submerged arc molten pool is arranged in the middle of the two groups of magnetic stirring heads 32, the magnetic stirring heads 32 are symmetrically hung on a sliding guide rail of a transverse welding gun z-direction moving frame 42 through a T-shaped magnetic stirring head hanging bracket 31, and the magnetic stirring heads are respectively driven by a magnetic stirring head self-adjusting motor 35 to drive a screw rod to realize self-position movement. The magnetic stirring head 32 on one side is composed of a J-shaped rotating arm 56 of a parallel mechanism, a U-shaped swinging arm 58 of the parallel mechanism and an active U-shaped rotating arm 61 of the parallel mechanism, and the J-shaped rotating arm driving motor 57 and the active U-shaped rotating arm driving motor 62 drive the three-legged parallel mechanism to swing and rotate at multiple angles respectively, so that the magnetic stirring head electromagnetic iron core 60 wound by the magnetic stirring head electromagnetic coil 59 fixedly connected and supported by the magnetic stirring head is driven to swing and rotate at multiple dimensions, the magnetic stirring heads 32 on both sides correspond to each other in real time position, a complete magnetic field loop is formed, and Lorentz force is generated on metal positive ions in a submerged arc surfacing molten pool.

As the magnetic stirring head 32 flexibly swings at multiple angles, the lorentz force direction is changed to exert a stirring effect on the surfacing welding pool. At the same time, the current direction in the magnetic stirring head electromagnetic coil 59 is periodically adjusted, and the stirring effect is exerted from the other dimension. The whole electromagnetic stirring system can move up and down along with the welding gun head 33, and the single-side magnetic stirring head 32 can randomly adjust the position of the whole electromagnetic stirring system so as to meet the requirements of the overlaying welding processes of rollers with different diameters. The magnetic field intensity can be changed by adjusting the current so as to meet the processing requirement, and the overlaying structure is thinned and the overlaying quality is improved through the multidimensional electromagnetic stirring effect. The integral magnetic stirring system is fixedly connected with a z-direction sliding block of the three-degree-of-freedom welding gun pose adjusting system.

As shown in fig. 1, 2, 3, 6, 7 and 8, the economized flux recycling system is composed of a flux recycling vibratory separation screen 19 and a flux recycling conveyor system. The flux recovery vibrating screen 19 is located below the welding machine 3, near where the torch head 33 is located. A residual flux collecting funnel 63 is fixedly connected below the welding machine tool 3, and the lower part of the collecting funnel 63 is opposite to the flux recycling vibration separating screen 19.

The flux recycling vibration separating screen 19 consists of an upper screen body 46 and a lower screen plate 47, the flux recycling vibration separating screen 19 rides on a recycling bracket guide rail 49 through four screen body rolling wheels 48, so that the flux recycling vibration separating screen 19 is arranged at a certain inclination angle, the lower part of the separating screen is connected with a connecting rod 51 through a pin shaft, and the connecting rod 51 is connected with an eccentric wheel 52.

The residual flux in the surfacing is largely dropped, the welding slag and the burnt flux are doped in the surfacing, and the surfacing needs to be recycled through screening, so that the production cost is effectively saved. The flux which is dropped in one-time processing is collected into the flux recovery vibration separation sieve 19 through the residual flux collection hopper 63 below the machine tool, the belt 53 is driven by the sieving driving motor 50, the belt 53 drives the eccentric wheel 52 to rotate through the rotating shaft, the eccentric wheel 52 is connected with the sieve body through the connecting rod 51 to form an offset crank slide block mechanism, periodic reciprocating sieving is realized, and the sieve body is supported by the sieve body rolling wheel 48 and runs along the running track 49.

The screens are arranged in an upper layer and a lower layer, and large scraps such as welding slag enter the welding slag collecting tank 24 from the upper layer screen 46, and recoverable welding flux falls on the lower layer screen 47 and finally falls on the welding flux recovery lower conveyor 16. Two groups of conveyor belts are arranged in parallel up and down on the right side of the welding machine tool 3, the upper conveyor belt is slightly higher than the welding flux hopper 5, the upper conveyor belt is arranged on an upper conveyor belt bracket 20, a feeding trolley sliding rail 15 is obliquely arranged between the upper conveyor belt and the lower conveyor belt, the feeding trolley 13 is supported by four rollers, and the feeding trolley is arranged in a front-back two-by-two mode and rides on the feeding trolley sliding rail 15. The rear part of the trolley is connected with a steel wire rope 12, the other end of the steel wire rope 12 is connected with a winch 10 at the top of the feeding trolley support frame 9, and the steel wire rope 12 is parallel to a feeding trolley slide rail 15.

The welding flux is conveyed into the feeding trolley 13, after the welding flux falls off to a certain amount, a gravity sensor 14 gives a signal to a winch motor 11, the winch motor 11 drives the feeding trolley 13 to move upwards, after the welding flux reaches a specified position, the front wheel of the trolley stops in a limiting mode, a tilting action is achieved under the driving of the winch motor 11, and the circulating recoverable welding flux is dumped into the feeding conveyor belt 16. The winch motor 11 rotates reversely, and the feeding trolley 13 returns. The recovered flux is conveyed into the flux hopper 5 by the feeding conveyor 16, so that full-automatic feeding and flux recycling are realized.

As shown in fig. 1, 2 and 3, the three-degree-of-freedom welding gun pose adjusting system is arranged at the top of the movable welding machine walking bracket 8, and can realize the three-way position movement adjustment of the welding gun heads x, y and z, and the x direction realizes the movement by driving the welding gun x direction adjusting driving gear 64 to the welding gun x direction adjusting rack 65 through the welding gun x direction adjusting system driving motor 27. The y direction drives a screw rod to realize the sliding motion of the gun head system through a welding gun y direction adjusting system driving motor 30. The z direction drives the screw rod through the driving motor 36 of the welding gun z direction adjusting system to realize the sliding movement of the gun head system.

The movable welding machine walking support 8 is fixedly connected by two side-by-side portal frame structures through a top cross beam, four welding machine walking support foot rollers 21 are arranged at the bottom of the welding machine walking support 8, and the welding machine walking support foot rollers 21 are arranged on welding machine walking slide rails 22 and can move freely so as to adapt to surfacing operations of rollers with different lengths. The 4 wire feeding rollers 41 are uniformly distributed on the welding gun z-direction moving frame 42 in an upper row and a lower row, and the wire feeding roller driving motor 40 drives the wire feeding rollers 41 to rotate so as to clamp the flux-cored wire 39 for feeding. The flux hopper 5 is fixedly connected to the welding gun y-direction moving frame 29, and the lower part of the flux hopper 5 is connected with the lower welding gun head 33 through a flux conveying hose 37, so that a submerged arc surfacing process is realized. The welding gun head 33 is fixedly connected with a phased array scanning probe 43, so that real-time defect detection is performed on the welding bead during the process, and the quality of the welding bead is ensured.

Fig. 11 is a ladder diagram of the PLC according to the present utility model, as shown in fig. 1 to 11, the working process of the present utility model is as follows:

1. the welder walks the carriage motor 18 to adjust the welding gun system to a predetermined welding position. The welding gun is adjusted to a predetermined welding position by starting the welding gun x-direction adjusting system driving motor 27, the welding gun y-direction adjusting system driving motor 30, and the welding gun z-direction adjusting system driving motor 36, respectively.

2. The spindle motor 2 is started to drive the roller 23 to be welded to rotate, and the welding operation is performed in cooperation with the welding gun. The wire feed roller driving motor 40 is started, and the flux-cored wire 39 is clamped to feed the welding gun head 33 for surfacing operation. The J-shaped rotating arm driving motor 57 and the active U-shaped rotating arm driving motor 62 are started to drive the iron core 60 and the coil 59 to realize multi-dimensional adjustment, and electromagnetic stirring is carried out on the surfacing welding molten pool.

3. And then, starting a separating screen driving motor 50 to perform periodical screening action, screening residual flux dropped in the overlaying process, dropping recoverable flux on a lower layer screen plate 47, starting a flux recovery lower conveying belt driving motor 17, dropping recoverable flux into a feeding trolley 15 through a flux recovery lower conveying belt 16, triggering a gravity sensor 14 at the lower end of the feeding trolley 13 after the recoverable flux reaches a certain weight, starting a winch motor 11 to drive a winch 10 to rotationally pull a steel wire rope 12 to ascend, further pulling the feeding trolley 13 to ascend along a feeding trolley sliding rail 15, and when the feeding trolley reaches the upper limit position of a feeding trolley bracket, stopping movement of the front end of the trolley, enabling the rear end of the trolley to be pulled by the steel wire rope to ascend so as to realize tipping action of the feeding trolley 13, dropping the flux on a flux recovery upper conveying belt 7, and starting the flux recovery upper conveying belt driving motor 6 to convey the flux into a flux hopper 5 so as to realize recycling of the flux.

The utility model can realize multi-dimensional magnetic field stirring overlaying welding, welding process detection, defect early warning and residual flux screening recovery and automatic recycling aiming at roller products with different lengths and diameters, effectively reduce the welding defect generation probability, improve the quality of an overlaying layer, reduce the welding cost and rejection rate and improve the economic benefit.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. Multidimensional magnetic stirring surfacing equipment based on three-foot parallel mechanism, which is characterized in that: comprises a magnetic stirring system, a residual flux recycling system, a three-degree-of-freedom welding gun pose adjusting system, a movable welding machine walking bracket, a multi-jaw chuck, a plug and a probe;

the multi-jaw chuck clamps one end of a welded workpiece, and the plug is tightly propped against the other end of the welded workpiece; the three-degree-of-freedom welding gun pose adjusting system is arranged on a movable welding machine walking bracket, so that the x, y and z three-way position movement adjustment of the welding gun head is realized, and the probe is fixedly connected to the welding gun head;

the magnetic stirring head of the magnetic stirring system is fixedly connected to a z-direction sliding guide rail of the three-degree-of-freedom welding gun pose adjusting system, so that the welding gun head is arranged at the middle position of two magnetic pole heads of the magnetic stirring system, the space position of the magnetic pole heads is randomly adjusted through multi-angle swing and rotation of a three-foot parallel mechanism, and meanwhile, the current direction in an iron core coil is periodically changed, and a multi-dimensional magnetic field stirring effect is generated on a formed submerged arc surfacing welding molten pool;

and the residual flux recycling system is used for recycling flux and conveying the flux to the flux hopper, and the residual flux after welding is collected into the sieve through the residual flux collecting hopper to sieve the residual flux, so that full-automatic feeding and flux recycling are realized.

2. The multidimensional magnetic stirring surfacing equipment based on the tripodia parallel mechanism as recited in claim 1, wherein the equipment comprises: the magnetic stirring system consists of two groups of magnetic stirring heads which are arranged side by side, the submerged arc molten pool is arranged at the middle position of the two groups of magnetic stirring heads, the magnetic stirring heads are symmetrically hung on a z-direction sliding guide rail and driven by a motor respectively, and the submerged arc molten pool can move the submerged arc molten pool;

3. The multidimensional magnetic stirring surfacing equipment based on the three-foot parallel mechanism as recited in claim 2, wherein the equipment is characterized in that: the stirring effect is exerted along with the multi-angle swing of the stirring head, so that the lorentz force direction is changed; meanwhile, the current transmission direction in the iron core coil is periodically adjusted, and the stirring effect is exerted from the other dimension;

4. The multidimensional magnetic stirring surfacing equipment based on the tripodia parallel mechanism as recited in claim 1, wherein the equipment comprises: the system comprises a flux recycling vibration separating screen and a flux recycling conveying system, wherein a flux recycling vibration separating screen is arranged below a welded workpiece, a flux collecting hopper is arranged below the welded workpiece, the flux which is processed and falls down at one time is collected into the flux recycling vibration separating screen, a belt is driven by a screening driving motor to drive a belt to rotate, the belt drives an eccentric wheel to rotate through a rotating shaft, and the eccentric wheel is connected with a screen body through a connecting rod to form an offset crank sliding block mechanism, so that periodic screening is realized; the bottom of the screen body is provided with a screen body rolling wheel which moves along the walking track.

5. The multidimensional magnetic stirring surfacing equipment based on the three-foot parallel mechanism as recited in claim 4, wherein the equipment comprises the following components: the screen body of the welding flux recovery vibration separation screen is arranged in an upper layer and a lower layer, welding slag and waste enter a welding slag collecting tank from the screen body of the upper layer, recoverable welding flux falls on the screen plate of the lower layer and finally falls on a welding flux recovery lower conveying belt, the welding flux is conveyed into a feeding trolley, when the falling welding flux reaches a set quantity, a gravity sensor gives a signal to a winch motor, the winch motor drives the feeding trolley to move upwards, after the welding flux reaches a designated position, the front wheel of the trolley stops in a limiting mode, a tilting action is realized under the driving of the winch motor, and the circulating recoverable welding flux is dumped to the feeding conveying belt; the winch motor is reversed, the trolley returns, and the feeding conveyor belt conveys the recovered flux to the flux hopper, so that full-automatic feeding and flux recycling are realized.

6. The multidimensional magnetic stirring surfacing equipment based on the tripodia parallel mechanism as recited in claim 1, wherein the equipment comprises: the three-degree-of-freedom welding gun pose adjusting system is arranged at the top of the movable welding machine walking bracket and realizes the movement adjustment of the x, y and z three-way positions of the welding gun head; the welding gun X-direction adjusting system driving motor drives the welding gun X-direction adjusting driving gear-the welding gun X-direction adjusting rack to realize X-direction linear movement, the welding gun Y-direction adjusting system driving motor drives the lead screw to realize Y-direction linear sliding, and the welding gun Z-direction adjusting system driving motor drives the lead screw to realize Z-direction linear sliding.

7. The multidimensional magnetic stirring surfacing equipment based on the tripodia parallel mechanism as recited in claim 6, wherein the equipment comprises: the three-degree-of-freedom welding gun pose adjusting system is provided with a welding gun y-direction and z-direction moving frame; the 4 wire feeding rollers are uniformly distributed on the z-direction moving frame of the welding gun in an upper row and a lower row, and the wire feeding rollers are driven by a wire feeding roller driving motor to rotate so as to clamp the flux-cored wire for feeding; the welding flux hopper is fixedly connected to the welding gun y-direction moving frame, and the lower part of the welding flux hopper is connected with the lower welding gun head through a welding flux conveying hose, so that a submerged arc surfacing process is realized.

8. The multidimensional magnetic stirring surfacing equipment based on the tripodia parallel mechanism as recited in claim 1, wherein the equipment comprises: the movable welding machine walking support comprises two side-by-side portal frames, the tops of the two side-by-side portal frames are fixedly connected through a top cross beam, four welding machine walking support foot rollers are arranged at the bottoms of the two side-by-side portal frames, and the welding machine walking support foot rollers are arranged on welding machine walking slide rails.

9. The multidimensional magnetic stirring surfacing equipment based on the tripodia parallel mechanism as recited in claim 1, wherein the equipment comprises: the multi-jaw chuck adopts a three-jaw chuck, the top is a movable tailstock top, and the top can move; the probe adopts a phased array scanning probe.