CN115625406A

CN115625406A - Welding device for machining motor end cover with multiple angles and no dead angles

Info

Publication number: CN115625406A
Application number: CN202211399912.1A
Authority: CN
Inventors: 唐勇; 林锡明
Original assignee: Jiangsu Zhenfulin Intelligent Technology Co ltd
Current assignee: Jiangsu Zhenfulin Intelligent Technology Co ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-01-20

Abstract

The invention discloses a multi-angle welding device for machining a motor end cover without dead angles, and relates to the technical field of motor end cover welding. According to the invention, the metal impurities attached to the surface of the welding rod adsorb the dust impurities on the surface layer in a charged state, so that the impurity removal effect is greatly improved. On the other hand, the clustered impurities are greatly influenced by wind power, can be smoothly discharged according to the track of a wind power route, and cannot be left.

Description

Welding device for machining motor end cover with multiple angles and no dead angles

Technical Field

The invention relates to the technical field of motor end cover welding, in particular to a multi-angle welding device for machining a motor end cover without dead angles.

Background

The motor end cover is mainly welded by an outer ring and an end face, and the traditional welding is usually carried out manually in real time and has low automation degree. Part of welding is carried out through still connecting equipment, and the welding mode usually used is argon arc welding, but the existing motor end cover welding equipment has more defects.

Conventional welding equipment does not clean the surface of the welding wire, so that impurities on the surface of the welding wire are easily left, and the impurities are mixed at a welding position during welding and can cause great influence on the welding strength.

The welding wires used by automatic welding equipment are generally continuous, the welding wires are coiled for continuous use, after each welding, one part of the welding wires still remains in the equipment, the overlong welding wires can have the change of the thickness degree of the welding wires in the processing process, operators can judge the wire feeding amount according to the condition of a molten pool in normal manual welding, mechanical equipment can hardly perform visual reaction on the condition of the molten pool, the welding wires can be continuously output only at a stable speed, the influence of the change of the diameter of the welding wires on the volume of the output welding wires is the change of the quadratic proportion, the stability of the welding molten pool is greatly influenced, and particularly when welding lines are required to be subjected to fish scale welding, the unstable welding wire output amount is more uneven with approximate fish scale lines.

Traditional welding set is inaccurate to the locking of terminal surface position, if press from both sides the edge and then block the welding easily, if carry out position adjustment through centering equipment and increased extra mechanical structure and welding step again, influences work efficiency on the one hand, and on the other hand has also increased the cost.

Disclosure of Invention

The invention aims to provide a welding device for machining a motor end cover, which is multi-angle and free of dead angles, and aims to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a multi-angle does not have welding set for motor end cover processing at dead angle, including position control assembly, the welder subassembly, the material loading subassembly, lower rack, position control assembly sets up on the material loading subassembly, material loading subassembly and lower rack fastening connection, welder subassembly and position control assembly fastening connection, the welder subassembly is including going out a part, the welding pipe, ceramic nozzle, the tungsten utmost point needle, go out a part and position control assembly fastening connection, the welding pipe with go out a part fastening connection, the tungsten utmost point needle, ceramic nozzle and welding pipe fastening connection. The position adjusting assembly adjusts the position of the welding gun assembly, the feeding assembly fixes the welded outer ring and the welded end face, an electric arc is generated between the tungsten electrode needle and a workpiece to be welded, and argon is sprayed out of the ceramic nozzle to carry out welding protection. According to the invention, the metal impurities attached to the surface of the welding rod adsorb the dust impurities on the surface layer in a charged state, so that the impurity removal effect is greatly improved. On the other hand, the clustered impurities are greatly influenced by wind power, can be smoothly removed according to the track of a wind power route, and cannot be left.

Further, the position adjusting assembly comprises a first welding frame and a second welding frame, the first welding frame comprises a first driving electric cylinder, a first movable disc, an extension rod, an extension frame and a retaining seat, the first driving electric cylinder is fixedly connected with the feeding assembly, the first movable disc is slidably connected with the feeding assembly, an output shaft of the first driving electric cylinder is fixedly connected with the first movable disc, the extension rod is fixedly connected with the first movable disc, the extension frame is fixedly connected with the extension rod, one end, far away from the extension rod, of the extension frame is fixedly connected with the retaining seat, a group of welding gun assemblies is fixedly connected with the retaining seat, an autorotation mechanism is arranged inside the extension rod, the second welding frame comprises a second driving electric cylinder, a second movable disc and a rotating ring, the second driving electric cylinder is fixedly connected with the feeding assembly, the second movable disc is slidably connected with the feeding assembly, the output shaft of the second driving electric cylinder is fixedly connected with the second movable disc, the rotating ring is rotatably connected with the other group of welding gun assemblies and one end, far away from the second movable disc, and an automatic retracting rod is arranged between the welding assembly and the rotating ring. The self-rotation mechanism is a conventional technical means in the field, a specific result is not described, the extension rod can rotate freely under the action of the self-rotation mechanism, and the extending frame is also internally provided with a driving part which can extend and contract freely. When welding, the stretching frame is unfolded, the extending rod rotates to drive the welding gun assembly to rotate, the inner side of the end cover is welded in an all-dimensional and dead-angle-free mode, and the whole welding process is completed at one time. The surface of the rotating ring is provided with an annular rack, the surface of the second movable disc is provided with a rotating motor, a rotating gear is arranged on an output shaft of the rotating motor, the rotating gear drives the rotating ring to rotate, and the welding gun assembly arranged on the rotating ring carries out all-dimensional non-dead-angle welding on the outer side of the end cover.

Further, the wire outlet component comprises a wire outlet pipe, a conveying belt, a pressure pipe, an adjusting rod, a reset spring, a spiral coil, a sliding needle and a cleaning unit, the wire outlet pipe is tightly connected with the position adjusting component, the pressure pipe is tightly connected with the conveying belt, the pressure pipe is telescopic, the inside of the pressure pipe is communicated with an external constant pressure air source, the conveying belt is provided with two groups, the two groups of conveying belts clamp the welding wire in the middle, a V-shaped groove is formed in the surface of the conveying belt, one end, far away from the conveying belt, of the pressure pipe is tightly connected with the inner wall of the wire outlet pipe, the adjusting rod is arranged at the outlet of the wire outlet pipe, the adjusting pipe is tightly connected with the inner wall of the wire outlet pipe, the adjusting rod is slidably connected with the adjusting pipe, one end, close to the side wall of the wire outlet pipe, of the reset spring is tightly connected with the adjusting rod, a roller is arranged at one end, far away from the adjusting pipe, the roller presses against the surface of the welding wire, a spiral coil is sleeved on the adjusting rod, the sliding needle is tightly connected with the side wall of the wire outlet pipe, the sliding needle is contacted with the spiral coil, one end, the inner side wall of the spiral coil, the wire is connected with the external power supply, the wire outlet of the cleaning unit, and the wire is connected with the sliding needle. The welding wires used by automatic welding equipment are generally continuous, the welding wires are coiled for continuous use, after each welding, one part of the welding wires still remains in the equipment, the overlong welding wires can have the change of the thickness degree of the welding wires in the processing process, operators can judge the wire feeding amount according to the condition of a molten pool in normal manual welding, mechanical equipment can hardly perform visual reaction on the condition of the molten pool, the welding wires can be continuously output only at a stable speed, the influence of the change of the diameter of the welding wires on the volume of the output welding wires is the change of the quadratic proportion, the stability of the welding molten pool is greatly influenced, and particularly when welding lines are required to be subjected to fish scale welding, the unstable welding wire output amount is more uneven with approximate fish scale lines. The welding wire diameter is detected through the adjusting rod at the welding wire outlet, the change of the welding wire diameter drives the adjusting rod to change, the position of the spiral coil is changed due to the change of the adjusting rod, the resistance in the access circuit changes, the change proportion of the access resistance is kept the same as the change proportion of the welding wire diameter, and the change of the current is just the reciprocal of the change of the welding wire. The current input at the conveyor belt is changed, the rated resistance of the conveyor belt is kept unchanged, and the resistance value change generated by inductive reactance is small and negligible compared with the rated resistance change of the equipment. The current and the output power are in a quadratic relation, and under the condition that the pressure of the air pressure pipe is constant, the surface of the conveying belt is subjected to constant pressure, the rotating resistance moment is kept unchanged, and the rotating speed is directly influenced by the power. The wire discharging component of the invention enables the quadratic power of the current change value to be positively correlated with the rotating speed, the quadratic power of the diameter of the welding wire to be negatively correlated with the rotating speed under the condition of a fixed output quantity per unit time, when the diameter of the welding wire is increased, the current is reduced, the rotating speed is correspondingly reduced, the output quantity per unit time is constant, when the diameter of the welding wire is reduced, the current is increased, the rotating speed is correspondingly increased, and the output quantity per unit time of the welding wire is still constant. Through this kind of mode, welding set need not to adjust output speed in long-term use, also can guarantee the stability of welding wire output volume all the time, has effectively improved welded stability.

Further, clean unit includes the adapter sleeve, the spiral chamber, the UNICOM trachea, retrieve the chamber, the adapter sleeve is kept away from the one end fastening connection of export with the inside lateral wall of play silk pipe, the spiral chamber, it sets up inside the adapter sleeve to retrieve the chamber, it is outside at spiral chamber to retrieve the chamber, spiral chamber surface is provided with the spiral channel, spiral chamber depressed part is provided with the UNICOM trachea and retrieves the chamber and links to each other, the welding rod passes from the spiral chamber, the bellying and the welding rod surface contact in spiral chamber, one side that the spiral chamber is close to the conveyer belt is provided with the intake pipe, it is provided with outlet duct and outside UNICOM to retrieve the chamber, the inside anion generator that is provided with of intake pipe. The air of anion is taken in the intake pipe input, and the welding rod moves ahead and is scraped by spiral channel protruding department, and welding rod surface dust impurity is struck off, and partial metal piece drops, combines with the anion, produces adsorption to dust magazine, adsorbs the metal impurity quality after uniting and increases, and the air current takes place to rotate along spiral channel to input and retrieve in the chamber. The rotating airflow generates centrifugal action, the agglomerated metal impurities carry dust, and the dust is obviously lifted under the centrifugal action, thrown into the communicating air pipe and enters the recovery cavity to be discharged along with the airflow. According to the invention, the metal impurities attached to the surface of the welding rod adsorb the dust impurities on the surface layer in a charged state, so that the impurity removal effect is greatly improved. On the other hand, the clustered impurities are greatly influenced by wind power, can be smoothly discharged according to the track of a wind power route, and cannot be left.

Furthermore, the welding pipe is internally provided with an adjusting air bag, a piston plate, a thrust spring and a thrust plate, one side of the adjusting air bag is tightly connected with the ceramic nozzle, the other side of the adjusting air bag is tightly connected with the piston plate, the piston plate is slidably connected with the inner wall of the welding pipe, the thrust plate is tightly connected with the inner wall of the welding pipe, one end of the thrust spring is tightly connected with the piston plate, one section of the thrust spring is tightly connected with the thrust plate, and the tungsten electrode needle is tightly connected with the piston plate. When the welding surface is provided with a bulge, the tungsten electrode needle is too close to the welding position, so that the electric arc is shortened, and the local temperature is increased.

Furthermore, the feeding assembly comprises an industrial manipulator, an outer ring fixing part and an end face fixing part, the outer ring fixing part is connected with the upper surface of the lower rack in a fastening mode, the end face fixing part is connected with the upper surface of the lower rack in a sliding mode, a moving module is arranged at the bottom of the industrial manipulator, the moving module is connected with the upper surface of the lower rack in a fastening mode, and the industrial manipulator is connected with a moving platform of the moving module in a fastening mode. The industrial manipulator extracts the outer ring and the end face to be welded and respectively conveys the outer ring and the end face to the outer ring fixing part and the end face fixing part for fixing.

Furthermore, the outer ring fixing part comprises a positioning seat, a first supporting plate, a second supporting plate, a guide shaft and an adjusting unit, the positioning seat is fixedly connected with the upper surface of the lower rack, the upper surfaces of the first supporting plate, the second supporting plate and the positioning seat are fixedly connected, the center position of the second supporting plate is provided with a through hole, one end of the guide shaft is fixedly connected with the first supporting plate, the other end of the guide shaft is fixedly connected with the second supporting plate, the first movable disc is slidably connected with the guide shaft, the first driving electric cylinder is fixedly connected with the first supporting plate, the adjusting unit is arranged on one side of the second supporting plate far away from the first supporting plate, the adjusting unit includes the initiative piece, the passive piece, the guide way, the telescopic link, the lead screw, the initiative motor, the guide way has four, the passive piece has threely, the initiative piece, passive piece and guide way sliding connection, the telescopic link is with the initiative piece, the passive piece is established ties in proper order, the telescopic link both sides respectively with adjacent initiative piece, the passive piece fastening connection, the lead screw, the initiative motor sets up in the guide way of installation initiative piece, initiative motor and guide way lateral wall fastening connection, lead screw one end and initiative motor's output shaft fastening connection, the lead screw other end and guide way lateral wall rotate to be connected, initiative piece bottom is provided with displacement nut, displacement nut and lead screw meshing, displacement nut and initiative piece fastening connection. When the outer ring is input to the outer ring fixing part, the driving block moves outwards, the telescopic rod extends to drive each driven block to move, the driving block and the driven blocks synchronously move outwards to support the outer pipe from inside to outside, and the outer pipe is fixed.

Furthermore, the end face fixing component comprises a mobile station, a positioning frame and a fixed disc, the mobile station is connected with the lower table in a sliding mode, the positioning frame is connected with the side edge of the mobile station in a fastening mode, the fixed disc is connected with the positioning frame in a fastening mode, one end of the fixed disc, far away from the mobile station, is connected with the positioning frame in a fastening mode, the second driving electric cylinder is connected with the mobile station in a fastening mode, and the second movable disc is connected with the positioning frame in a sliding mode. The lower side of the mobile station is provided with a driving wheel which can move on the surface of the lower rack. The fixed disk fixes the end face, the movable platform drives the fixed disk to move, and the end face is attached to the outer ring.

Further, the fixed disk surface is provided with the electromagnetic plate, the rotating ring, pressure sensor, the one side of locating rack is kept away from at the fixed disk to the electromagnetic plate setting, the rotating ring sets up the one side that is close to the locating rack at the fixed disk, rotating ring and locating rack rotate to be connected, locating rack and rotating ring rotate junction upside position embedding have pressure sensor, the electromagnetic plate has four, four electromagnetic plates center position evenly distributed around the fixed disk, the electromagnetic plate surface is provided with the friction line, the fixed disk tangent line of friction line and electromagnetic plate mounted position department is parallel to each other. A power driving mechanism is arranged between the rotating ring and the positioning frame, the fixed disc can be driven by the rotating ring to rotate, the power driving mechanism belongs to the conventional technical means in the field, and the specific structure is not described. When the industrial manipulator moves the end face to the fixed disk, the fixed disk can be adsorbed by the electromagnetic plate, but the fixed position of the end face can deviate, and the conventional centering mode needs additional position calibration equipment, so that the complexity of the equipment is increased. The end face is driven to rotate by the fixed disc, the pressure sensor can detect the radial pressure on the positioning frame in real time in the rotating process, if the pressure is uniform, the position of the end face is not eccentric, if the pressure sensor has a large numerical range, the eccentric position of the end face is positioned at the lowest position when the numerical value is the largest, the eccentric position is positioned in the middle of two groups of electromagnetic plates or below a certain group of electromagnetic plates, the encoder encodes the rotating angle in the rotating process of the rotating ring, the rotating angle information is output in real time, when the maximum pressure value appears, the position of the electromagnetic plate opposite to the position is marked, when the marked electromagnetic plate rotates to the lower position, the input current of the electromagnetic plate and the electromagnetic plate symmetrical to the electromagnetic plate is reduced, the electromagnetic force is reduced, the friction force of the end face on the pair of electromagnetic plates is reduced, and the friction arranged on the electromagnetic plate in the horizontal state is in the vertical state, so that the falling of the end face is difficult to be hindered. Through many times of rotation, the position of terminal surface can be adjusted gradually, and when the gravity direction was opposite with eccentric direction, pull down eccentric position through gravity, the terminal surface returns the center gradually.

Compared with the prior art, the invention has the following beneficial effects: the position adjusting assembly realizes omnibearing welding without dead angles, can adapt to motor end covers of different sizes, and greatly improves the universality of the device. The wire discharging component of the invention enables the quadratic power of the current change value to be positively correlated with the rotating speed, the quadratic power of the diameter of the welding wire to be negatively correlated with the rotating speed under the condition of a fixed output quantity per unit time, when the diameter of the welding wire is increased, the current is reduced, the rotating speed is correspondingly reduced, the output quantity per unit time is constant, when the diameter of the welding wire is reduced, the current is increased, the rotating speed is correspondingly increased, and the output quantity per unit time of the welding wire is still constant. Through the mode, the welding device does not need to adjust the output speed in the long-term use process, the stability of the output quantity of the welding wire can be always ensured, and the welding stability is effectively improved. According to the invention, the metal impurities attached to the surface of the welding rod adsorb the dust impurities on the surface layer in a charged state, so that the impurity removal effect is greatly improved. On the other hand, the clustered impurities are greatly influenced by wind power, can be smoothly discharged according to the track of a wind power route, and cannot be left. The fixed disk provided by the invention can adjust the position of the end face through multiple rotations, when the gravity direction is opposite to the eccentric direction, the eccentric position is pulled down through gravity, the eccentricity of the end face can be gradually compensated by gravity, and the welding precision is greatly improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view of the inner ring of the present invention in a welded state;

FIG. 3 is a schematic view of the overall structure of the adjusting unit of the present invention;

FIG. 4 is a schematic view of the overall structure of the fixing plate of the present invention;

FIG. 5 is a sectional view of the inner structure of the filament outlet tube according to the present invention;

FIG. 6 is a schematic diagram of the operation of the filament outlet tube of the present invention;

FIG. 7 is a sectional view showing the internal structure of the cleaning unit of the present invention;

FIG. 8 is a partial cross-sectional view of the internal structure of a welded pipe of the present invention;

in the figure: 1-position adjusting component, 11-first welding frame, 111-first driving electric cylinder, 112-first movable disc, 113-extension rod, 114-extension frame, 115-holding seat, 12-second welding frame, 121-second driving electric cylinder, 122-second movable disc, 2-welding gun component, 21-wire outlet component, 211-wire outlet pipe, 212-conveying belt, 213-pneumatic pipe, 214-adjusting pipe, 215-adjusting rod, 216-reset spring, 217-spiral coil, 218-sliding needle, 219-cleaning unit, 2191-fixed sleeve, 2192-spiral cavity, 2193-communicated air pipe, 2194-recovery cavity, 22-welding pipe, 221-adjusting air bag 222-piston plate, 223-thrust spring, 224-thrust plate, 23-ceramic nozzle, 24-tungsten pole needle, 3-feeding component, 31-industrial manipulator, 32-outer ring fixing component, 321-positioning seat, 322-first supporting plate, 323-second supporting plate, 324-guiding shaft, 325-adjusting unit, 3251-driving block, 3252-driven block, 3253-guiding groove, 3254-telescopic rod, 3255-screw rod, 3256-driving motor, 33-end surface fixing component, 331-moving table, 332-positioning frame, 333-fixed disc, 3331-electromagnetic plate, 3332-rotating ring, 3333-pressure sensor and 4-lower rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution:

as shown in figures 1-8, a multi-angle welding device for machining a motor end cover without dead angles comprises a position adjusting assembly 1, a welding gun assembly 2, a feeding assembly 3 and a lower rack 4, wherein the position adjusting assembly 1 is arranged on the feeding assembly 3, the feeding assembly 3 is fixedly connected with the lower rack 4, the welding gun assembly 2 is fixedly connected with the position adjusting assembly 1, the welding gun assembly 2 comprises a wire outlet component 21, a welding pipe 22, a ceramic nozzle 23 and a tungsten electrode needle 24, the wire outlet component 21 is fixedly connected with the position adjusting assembly 1, the welding pipe 22 is fixedly connected with the wire outlet component 21, and the tungsten electrode needle 24, the ceramic nozzle 23 and the welding pipe 22 are fixedly connected. The position adjusting assembly adjusts the position of the welding gun assembly, the feeding assembly fixes the welded outer ring and the end face, electric arcs are generated between the tungsten electrode needle and a workpiece to be welded, and argon is sprayed out of the ceramic nozzle to carry out welding protection. According to the invention, the metal impurities attached to the surface of the welding rod adsorb the dust impurities on the surface layer in a charged state, so that the impurity removal effect is greatly improved. On the other hand, the clustered impurities are greatly influenced by wind power, can be smoothly removed according to the track of a wind power route, and cannot be left.

The position adjusting assembly 1 comprises a first welding frame 11 and a second welding frame 12, the first welding frame 11 comprises a first driving electric cylinder 111, a first movable disc 112, an extension rod 113, an extension frame 114 and a holding seat 115, the first driving electric cylinder 111 is fixedly connected with a feeding assembly 3, the first movable disc 112 is slidably connected with the feeding assembly 3, an output shaft of the first driving electric cylinder 111 is fixedly connected with the first movable disc 112, the extension rod 113 is fixedly connected with the first movable disc 112, the extension frame 114 is fixedly connected with the extension rod 113, one end of the extension frame 114, far away from the extension rod 113, is fixedly connected with the holding seat 115, a set of welding gun assemblies 2 is fixedly connected with the holding seat 115, an autorotation mechanism is arranged inside the extension rod 113, the second welding frame 12 comprises a second driving electric cylinder 121, a second movable disc 122 and a rotating ring 123, the second driving electric cylinder 121 is fixedly connected with the feeding assembly 3, the second movable disc 122 is slidably connected with the feeding assembly 3, an output shaft of the second driving electric cylinder 121 is fixedly connected with the second movable disc 122, the rotating ring 123 is connected with the second movable disc 122, and one end of the rotating ring 123 is connected with the rotating welding gun assembly, and one end of the rotating ring 123 is arranged between the rotating ring 2 and the rotating ring 123. The rotation mechanism is a conventional technical means in the art, and a specific result is not described, the extension rod 113 can rotate freely under the action of the rotation mechanism, and the inside of the extending frame 114 is also provided with a driving component which can extend and contract freely. When welding, the extending frame 114 is unfolded, the extending rod 113 rotates to drive the welding gun 2 assembly to rotate, the inner side of the end cover is welded in an all-dimensional and dead-angle-free mode, and the whole welding process is finished at one time. The surface of the rotating ring 123 is provided with an annular rack, the surface of the second movable disc 122 is provided with a rotating motor, an output shaft of the rotating motor is provided with a rotating gear, the rotating gear drives the rotating ring 123 to rotate, and the welding gun assembly 2 arranged on the rotating ring 123 performs all-dimensional dead-angle-free welding on the outer side of the end cover.

The wire outlet component 21 comprises a wire outlet pipe 211, two groups of conveyer belts 212, a pneumatic pipe 213, an adjusting pipe 214, an adjusting rod 215, a return spring 216, a spiral coil 217, a sliding needle 218 and a cleaning unit 219, the wire outlet pipe is tightly connected with the position adjusting component 1, the pneumatic pipe 213 is tightly connected with the conveyer belts 212, the pneumatic pipe 213 can stretch and retract, the inner part of the pneumatic pipe 213 is communicated with an external constant pressure air source, the conveyer belts 212 are provided with two groups, the two groups of conveyer belts 212 clamp welding wires in the middle, the surface of the conveyer belts 212 is provided with a V-shaped groove, one end of the pneumatic pipe 213 far away from the conveyer belts 212 is tightly connected with the inner wall of the wire outlet pipe 211, the adjusting rod 215 is arranged at the outlet of the wire outlet pipe 211, the adjusting pipe 214 is tightly connected with the inner wall of the wire outlet pipe 211, the adjusting rod 215 is connected with the adjusting tube 214 in a sliding mode, one end of the reset spring 216 is connected with the end face of the inner wall of the adjusting tube 214 in a fastening mode, the other end of the reset spring 216 is connected with the adjusting rod 215 in a fastening mode, one end, extending out of the adjusting tube 214, of the adjusting rod 215 is provided with a roller, the roller is pressed on the surface of a welding wire, a spiral coil 217 is sleeved on the adjusting rod 215, a sliding needle 218 is connected with the side wall of the wire discharging tube 211 in a fastening mode, the sliding needle 218 is in contact with the spiral coil 217, one end, close to the side wall of the wire discharging tube 211, of the spiral coil 217 is connected with a lead, the lead is connected with an anode of an external power supply, the sliding needle 218 is connected with the conveying belt 212 through the lead, the other end of the conveying belt 212 is connected with a cathode of the external power supply through the lead, and the cleaning unit 218 is arranged at one end, far away from an outlet, inside the wire discharging tube 211. The welding wires used by automatic welding equipment are generally continuous, the welding wires are coiled for continuous use, after each welding, one part of the welding wires still remains in the equipment, the overlong welding wires can have the change of the thickness degree of the welding wires in the processing process, operators can judge the wire feeding amount according to the condition of a molten pool in normal manual welding, mechanical equipment can hardly perform visual reaction on the condition of the molten pool, the welding wires can be continuously output only at a stable speed, the influence of the change of the diameter of the welding wires on the volume of the output welding wires is the change of the quadratic proportion, the stability of the welding molten pool is greatly influenced, and particularly when welding lines are required to be subjected to fish scale welding, the unstable welding wire output amount is more uneven with approximate fish scale lines. According to the invention, the diameter of the welding wire is detected through the adjusting rod 215 at the welding wire outlet, the change of the diameter of the welding wire drives the adjusting rod 215 to change, the change of the adjusting rod 215 causes the change of the position of the spiral coil 217, the resistance in the access circuit changes, the change ratio of the access resistance is kept to be the same as the change ratio of the diameter of the welding wire, and the change of the current is just the reciprocal of the change of the welding wire. The current input at the conveyor belt is changed, while the rated resistance of the conveyor belt is kept unchanged, and the resistance value change caused by inductive reactance is small and negligible compared with the rated resistance change of the equipment. The current and the output power are in a quadratic relation, and under the condition that the pressure of the pneumatic tube 213 is constant, the surface of the conveying belt 212 is subjected to constant pressure, the resistance moment of rotation is kept unchanged, and the rotating speed is directly influenced by the power. The wire discharging part 21 of the present invention positively correlates the square of the current change value with the rotation speed, and negatively correlates the square of the wire diameter with the rotation speed when the output per unit time is constant, and decreases the current when the wire diameter increases, and accordingly decreases the rotation speed, and keeps the output per unit time constant, and increases the current when the wire diameter decreases, and accordingly increases the rotation speed, and keeps the output per unit time constant. Through the mode, the welding device does not need to adjust the output speed in the long-term use process, the stability of the output quantity of the welding wire can be always ensured, and the welding stability is effectively improved.

The cleaning unit 219 comprises a fixed sleeve 2191, a spiral cavity 2192, a communication air pipe 2193, a recovery cavity 2194, the fixed sleeve 2191 is connected with the side wall inside the wire outlet pipe 211 far away from one end of an outlet in a fastened mode, the spiral cavity 2192, the recovery cavity 2194 is arranged inside the fixed sleeve 2191, the recovery cavity 2194 surrounds the outside of the spiral cavity 2192, a spiral channel is arranged on the surface of the spiral cavity 2192, the concave portion of the spiral cavity 2192 is provided with the communication air pipe 2193 and is connected with the recovery cavity 2194, a welding rod penetrates through the spiral cavity 2192, the convex portion of the spiral cavity 2192 is in contact with the surface of the welding rod, an air inlet pipe is arranged on one side, close to the conveying belt 212, the recovery cavity 2194 is provided with an air outlet pipe and external communication, and an anion generator is arranged inside the air inlet pipe. The air of anion is taken in the intake pipe input, and the welding rod moves ahead and is scraped by spiral channel protruding department, and welding rod surface dust impurity is struck off, and partial metal piece drops, combines with the anion, produces adsorption to dust magazine, adsorbs the metal impurity quality after uniting and increases, and the air current takes place to rotate along spiral channel to input and retrieve in the chamber. The rotating airflow generates centrifugal action, the agglomerated metal impurities carry dust, and the dust is obviously lifted under the centrifugal action, thrown into the communicating air pipe and enters the recovery cavity to be discharged along with the airflow. According to the invention, the metal impurities attached to the surface of the welding rod adsorb the dust impurities on the surface layer in a charged state, so that the impurity removal effect is greatly improved. On the other hand, the clustered impurities are greatly influenced by wind power, can be smoothly removed according to the track of a wind power route, and cannot be left.

An adjusting air bag 221, a piston plate 222, a thrust spring 223 and a thrust plate 224 are arranged inside the welded pipe 22, one side of the adjusting air bag 221 is fixedly connected with the ceramic nozzle 23, the other side of the adjusting air bag 221 is fixedly connected with the piston plate 222, the piston plate 222 is slidably connected with the inner wall of the welded pipe 22, the thrust plate 224 is fixedly connected with the inner wall of the welded pipe 22, one end of the thrust spring 223 is fixedly connected with the piston plate 222, one section of the thrust spring 223 is fixedly connected with the thrust plate 224, and the tungsten electrode needle 24 is fixedly connected with the piston plate 222. When the welding surface is convex, the tungsten electrode needle 24 is too close to the welding position, so that the electric arc is shortened, and the local temperature is increased, in order to avoid the problem, the adjusting air bag 221 is arranged, when more heat is still transferred to the adjusting air bag 221 after the separation of the ceramic nozzle 23, the adjusting air bag 221 expands to push the piston plate 222 to retract, the extending amount of the tungsten electrode needle 24 is shortened, and when the temperature is recovered to be normal, the tungsten electrode needle 24 is output again.

The feeding assembly 3 comprises an industrial manipulator 31, an outer ring fixing part 32 and an end face fixing part 33, the outer ring fixing part 32 is connected with the upper surface of the lower rack 4 in a fastening mode, the end face fixing part 33 is connected with the upper surface of the lower rack 4 in a sliding mode, a moving module is arranged at the bottom of the industrial manipulator 31, the moving module is connected with the upper surface of the lower rack 4 in a fastening mode, and the industrial manipulator 31 is connected with a moving platform of the moving module in a fastening mode. The industrial robot 31 picks up the outer ring and the end face to be welded, and respectively conveys them to the outer ring fixing part 32 and the end face fixing part 33 for fixing.

The outer ring fixing part 32 comprises a positioning seat 321, a first supporting plate 322, a second supporting plate 323, a guiding shaft 324 and an adjusting unit 325, the positioning seat 321 is fixedly connected with the upper surface of the lower rack 4, the first supporting plate 322, the second supporting plate 323 and the upper surface of the positioning seat 321 are fixedly connected, a through hole is arranged at the center of the second supporting plate 323, one end of the guiding shaft 324 is fixedly connected with the first supporting plate 322, the other end of the guiding shaft 324 is fixedly connected with the second supporting plate 323, the first movable disk 112 is slidably connected with the guiding shaft 324, the first driving electric cylinder 111 is fixedly connected with the first supporting plate 322, the adjusting unit 325 is arranged at one side of the second supporting plate 323 far away from the first supporting plate 322, the adjusting unit 325 comprises a driving block 3251, a driven block 3252, a guiding groove 3253, a telescopic rod 3254, a screw rod 3255 and a driving motor 3256, the number of the guide grooves 3253 is four, the number of the driven blocks 3252 is three, the driving block 3251, the driven block 3252 and the guide grooves 3253 are in sliding connection, the driving block 3251 and the driven block 3252 are sequentially connected in series through a telescopic rod 3254, two sides of the telescopic rod 3254 are respectively and tightly connected with the adjacent driving block 3251 and the adjacent driven block 3252, a screw rod 3255 and a driving motor 3256 are arranged in the guide grooves 3253 for installing the driving block 3251, the side walls of the driving motor 3256 and the guide grooves 3253 are tightly connected, one end of the screw rod 3255 is tightly connected with an output shaft of the driving motor 3256, the other end of the screw rod 3255 is rotatably connected with the side wall of the guide groove 3253, the bottom of the driving block 3251 is provided with a displacement nut, the displacement nut is meshed with the screw rod 3255, and the displacement nut is tightly connected with the driving block 3251. When the outer ring is input to the outer ring fixing part 32, the driving block 3251 moves outwards, the telescopic rod 3254 extends to drive each driven block 3252 to move, the driving block 3251 and the driven block 3252 move outwards synchronously to support the outer tube from inside to outside, and the outer tube is fixed.

The end face fixing part 33 comprises a moving table 331, a positioning frame 332 and a fixed disc 333, wherein the moving table 331 is connected with the lower table 4 in a sliding mode, the positioning frame 332 is connected with the side edge of the moving table 331 in a fastening mode, the fixed disc 333 is connected with the positioning frame 332 in a fastening mode, the fixed disc 333 is connected with one end, far away from the moving table 331, of the positioning frame 332 in a fastening mode, the second driving electric cylinder 121 is connected with the moving table 331 in a fastening mode, and the second movable disc 122 is connected with the positioning frame 332 in a sliding mode. The lower side of the moving platform is provided with a driving wheel which can move on the surface of the lower platform frame 4. The fixed disk 333 fixes the end surface, and the movable table 331 drives the fixed disk 333 to move, so that the end surface is attached to the outer ring.

The surface of the fixed disk 333 is provided with an electromagnetic plate 3331, a rotating ring 3332 and a pressure sensor 3333, the electromagnetic plate 3331 is arranged on one side of the fixed disk 333 far away from the positioning frame 332, the rotating ring 3332 is arranged on one side of the fixed disk 333 close to the positioning frame 332, the rotating ring 3332 is rotatably connected with the positioning frame 332, the pressure sensor 3333 is embedded in the upper side position of the rotary connection position of the positioning frame 332 and the rotating ring 3332, the number of the electromagnetic plates 3331 is four, the four electromagnetic plates 3331 are uniformly distributed around the central position of the fixed disk 333, the surface of the electromagnetic plate 3331 is provided with friction lines, and the friction lines are parallel to the tangent line of the fixed disk 333 at the installation position of the electromagnetic plates. The power driving mechanism is arranged between the rotating ring 3332 and the positioning frame 332, the fixed disc 333 can be driven by the rotating ring 3332 to rotate, the power driving mechanism belongs to the conventional technical means in the field, and the specific structure is not described. When the industrial robot 31 moves the end face to the fixed disk 333, the electromagnetic plate 3331 may attract the fixed disk 333, but the fixed position of the end face may be deviated, and the conventional centering method requires an additional position calibration apparatus, increasing the complexity of the apparatus. The end face is driven to rotate by the fixed disc 333, the pressure sensor can detect the radial pressure on the positioning frame 332 in real time in the rotating process, if the pressure is uniform, the position of the end face is not eccentric, if the pressure sensor 3333 has a large numerical range, the eccentric position of the end face is positioned at the lowest position when the numerical range is the largest, the eccentric position is positioned in the middle of two groups of electromagnetic plates 3331 or below one group of electromagnetic plates 3331, the rotating ring 3332 encodes the rotating angle in the rotating process, the rotating angle information is output in real time, when the maximum pressure value is generated, the position of the electromagnetic plate 3331 opposite to the position is marked, when the marked electromagnetic plate 3331 rotates to the lower position, the input current of the electromagnetic plate 3331 and the symmetrical electromagnetic plate 3331 is reduced, the electromagnetic force 3331 is reduced, the friction force of the pair of electromagnetic plates 3331 received by the end face is reduced, and the friction arranged on the electromagnetic plate 3331 in the horizontal state is in a vertical state, so that the falling of the end face is difficult to be hindered. Through many times of rotation, the position of terminal surface can be adjusted gradually, and when the direction of gravity is opposite with eccentric direction, pull down eccentric position through gravity, the terminal surface returns the center gradually.

The working principle of the invention is as follows: the industrial robot 31 picks up the outer ring and the end face to be welded, and respectively conveys them to the outer ring fixing part 32 and the end face fixing part 33 for fixing. When the outer ring is input to the outer ring fixing part 32, the driving block 3251 moves outwards, the telescopic rod 3254 extends to drive each driven block 3252 to move, the driving block 3251 and the driven block 3252 move outwards synchronously to support the outer tube from inside to outside, and the outer tube is fixed. The fixed disk 333 fixes the end face, and the movable table 331 drives the fixed disk 333 to move, so that the end face is attached to the outer ring. When welding, the extending frame 114 is unfolded, the extending rod 113 rotates to drive the welding gun 2 assembly to rotate, the inner side of the end cover is welded in an all-dimensional and dead-angle-free mode, and the whole welding process is finished at one time. The rotating gear drives the rotating ring 123 to rotate, and the welding gun assembly 2 arranged on the rotating ring 123 performs all-dimensional dead-angle-free welding on the outer side of the end cover. In the welding process, the gas with the negative ions is input into the gas inlet pipe, the welding rod moves forwards and is scratched by the convex part of the spiral channel, dust and impurities on the surface of the welding rod are scraped, part of metal fragments fall off and are combined with the negative ions, and the adsorption effect on dust and magazines is generated. The rotating airflow generates centrifugal action, the agglomerated metal impurities carry dust, and the dust is obviously lifted under the centrifugal action, thrown into the communicating air pipe and enters the recovery cavity to be discharged along with the airflow. The wire outlet component 21 adjusts the output speed of the welding rod, and ensures that the welding is carried out at a stable speed.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a welding set is used in processing of motor end cover at no dead angle of multi-angle which characterized in that: welding set includes position control subassembly (1), welder subassembly (2), material loading subassembly (3), lower rack (4), position control subassembly (1) sets up on material loading subassembly (3), material loading subassembly (3) and lower rack (4) fastening connection, welder subassembly (2) and position control subassembly (1) fastening connection, welder subassembly (2) is including going out silk part (21), welding pipe (22), ceramic nozzle (23), tungsten electrode needle (24), go out silk part (21) and position control subassembly (1) fastening connection, welding pipe (22) and play silk part (21) fastening connection, tungsten electrode needle (24), ceramic nozzle (23) and welding pipe (22) fastening connection.

2. The welding device for machining the motor end cover with multiple angles and no dead angle as claimed in claim 1, is characterized in that: the position adjusting assembly (1) comprises a first welding frame (11) and a second welding frame (12), the first welding frame (11) comprises a first driving electric cylinder (111), a first movable disc (112), an extension rod (113), an extension frame (114) and a retaining seat (115), the first driving electric cylinder (111) is fixedly connected with the feeding assembly (3), the first movable disc (112) is slidably connected with the feeding assembly (3), an output shaft of the first driving electric cylinder (111) is fixedly connected with the first movable disc (112), the extension rod (113) is fixedly connected with the first movable disc (112), the extension frame (114) is fixedly connected with the extension rod (113), one end of the extension frame (114), far away from the extension rod (113), is fixedly connected with the retaining seat (115), one group of the welding gun assemblies (2) is fixedly connected with the retaining seat (115), a rotation mechanism is arranged inside the extension rod (113), the second welding frame (12) comprises a second driving electric cylinder (122), a second movable disc (122) and a second movable disc (121), the second movable disc (121) is connected with the second movable disc (121) and the second movable disc (121), the rotating ring (123) is rotatably connected with the second movable disk (122), the other welding gun assembly (2) is fixedly connected with one end, far away from the second movable disk (122), of the rotating ring (123), and an automatic contraction rod is arranged between the welding assembly (2) and the rotating ring (123).

3. The welding device for machining the motor end cover with multiple angles and no dead angle as claimed in claim 2, wherein: the wire outlet component (21) comprises a wire outlet pipe (211), a conveying belt (212), a pneumatic tube (213), an adjusting pipe (214), an adjusting rod (215), a reset spring (216), a spiral coil (217), a sliding needle (218) and a cleaning unit (219), the wire outlet pipe is tightly connected with the position adjusting component (1), the pneumatic tube (213) is tightly connected with the conveying belt (212), the pneumatic tube (213) is telescopic, the inside and the outside constant pressure air source of the pneumatic tube (213) are communicated, the conveying belt (212) is provided with two groups, the welding wires are clamped in the middle of the two groups of conveying belts (212), the surface of the conveying belt (212) is provided with a V-shaped groove, one end of the pneumatic tube (213) far away from the conveying belt (212) is tightly connected with the inner wall of the wire outlet pipe (211), the adjusting rod (215) is arranged at the outlet of the wire outlet pipe (211), the adjusting pipe (214) is tightly connected with the inner wall of the wire outlet pipe (211), the adjusting rod (215) is slidably connected with the adjusting pipe (214), one end face of the reset spring (216) is connected with the inner wall of the adjusting pipe (214), the other end face of the adjusting rod (215) is connected with the adjusting rod (215), and the adjusting roller (215) is arranged on the surface of the adjusting rod (215), and the adjusting rod (215) is sleeved with the adjusting rod (215) which is arranged on the adjusting rod (215), the utility model discloses a silk tube (211) with the silk of sliding needle (218), slide needle (218) and spiral coil (217) contact, spiral coil (217) are close to the one end of silk tube (211) lateral wall and are connected with the wire, the wire links to each other with external power source positive pole, slide needle (218) link to each other with conveyer belt (212) through the wire, the conveyer belt (212) other end passes through the wire and links to each other with the external power source negative pole, cleaning unit (218) set up the one end of keeping away from the export in silk tube (211) inside.

4. The welding device for machining the motor end cover with the multi-angle and no dead angle as claimed in claim 3, wherein the welding device comprises: clean unit (219) including fixed sleeve pipe (2191), spiral chamber (2192), UNICOM trachea (2193), retrieve chamber (2194), fixed sleeve pipe (2191) and the inside lateral wall of play silk pipe (211) are kept away from the one end fastening connection of export, spiral chamber (2192), retrieve chamber (2194) and set up inside fixed sleeve pipe (2191), it is outside at spiral chamber (2192) to retrieve chamber (2194), spiral chamber (2192) surface is provided with spiral channel, spiral chamber (2192) depressed place is provided with UNICOM trachea (2193) and retrieves chamber (2194) and links to each other, and the welding rod passes from spiral chamber (2192), the protruding department and the welding rod surface contact of spiral chamber (2192), spiral chamber (2192) are close to one side of conveyer belt (212) and are provided with the intake pipe, it is provided with outside UNICOM to retrieve chamber (2194), the inside negative ion generator that is provided with of intake pipe.

5. The welding device for machining the motor end cover with the multi-angle and no dead angle as claimed in claim 4, wherein the welding device comprises: an adjusting air bag (221), a piston plate (222), a thrust spring (223) and a thrust plate (224) are arranged inside the welding pipe (22), one side of the adjusting air bag (221) is fixedly connected with the ceramic nozzle (23), the other side of the adjusting air bag (221) is fixedly connected with the piston plate (222), the piston plate (222) is slidably connected with the inner wall of the welding pipe (22), the thrust plate (224) is fixedly connected with the inner wall of the welding pipe (22), one end of the thrust spring (223) is fixedly connected with the piston plate (222), one section of the thrust spring (223) is fixedly connected with the thrust plate (224), and the tungsten pole needle (24) is fixedly connected with the piston plate (222).

6. The welding device for machining the motor end cover with the multi-angle and no dead angle as claimed in claim 5, wherein the welding device comprises: material loading subassembly (3) are including industrial robot (31), outer loop fixed part (32), end fixing part (33), outer loop fixed part (32) and lower rack (4) upper surface fastening connect, end fixing part (33) and lower rack (4) upper surface sliding connection, industrial robot (31) bottom is provided with the removal module, remove module and lower rack (4) upper surface fastening connect, industrial robot (31) and the removal platform fastening connection who removes the module.

7. The welding device for machining the motor end cover with the multi-angle and no dead angle as claimed in claim 6, wherein: the outer ring fixing part (32) comprises a positioning seat (321), a first supporting plate (322), a second supporting plate (323), a guiding shaft (324) and an adjusting unit (325), the positioning seat (321) is fastened with the upper surface of a lower rack (4), the first supporting plate (322), the second supporting plate (323) and the positioning seat (321) are fastened, a through hole is formed in the center position of the second supporting plate (323), one end of the guiding shaft (324) is fastened with the first supporting plate (322), the other end of the guiding shaft (324) is fastened with the second supporting plate (323), the first movable plate (112) is slidably connected with the guiding shaft (324), the first driving electric cylinder (111) is fastened with the first supporting plate (322), the adjusting unit (325) is arranged on the side, far away from the first supporting plate (322), of the second supporting plate (323), the adjusting unit (325) comprises an active block (3251), a passive block (3252), a guiding groove (3253), a 3254), a screw rod (3256), a driven block (52) and a telescopic rod (52) and a driven block (53) and a telescopic rod (52) which is connected with the three driving block (3251), a driven block (3253), a telescopic rod (52) and a telescopic rod (3253), a telescopic rod (52) are arranged on the outer ring fixing part, the driven block (3252) is sequentially connected in series, two sides of a telescopic rod (3254) are respectively connected with the adjacent driving block (3251) and the adjacent driven block (3252) in a fastening mode, the screw rod (3255) and the driving motor (3256) are arranged in a guide groove (3253) for installing the driving block (3251), the driving motor (3256) is connected with the side wall of the guide groove (3253) in a fastening mode, one end of the screw rod (3255) is connected with an output shaft of the driving motor (3256) in a fastening mode, the other end of the screw rod (3255) is connected with the side wall of the guide groove (3253) in a rotating mode, a displacement nut is arranged at the bottom of the driving block (3251), the displacement nut is meshed with the screw rod (3255), and the displacement nut is connected with the driving block (3251) in a fastening mode.

8. The welding device for machining the motor end cover with the multi-angle and no dead angle as claimed in claim 7, wherein: the fixed part of terminal surface (33) is including moving platform (331), locating rack (332), fixed disk (333), moving platform (331) and lower rack (4) sliding connection, locating rack (332) and moving platform (331) side fastening connection, fixed disk (333) and locating rack (332) fastening connection, the one end fastening connection of moving platform (331) is kept away from to fixed disk (333) and locating rack (332), second drive electric jar (121) and moving platform (331) fastening connection, second activity dish (122) and locating rack (332) sliding connection.

9. The welding device for machining the motor end cover with multiple angles and no dead angle as claimed in claim 8, wherein: fixed disk (333) surface is provided with electromagnetic plate (3331), swivel becket (3332), pressure sensor (3333), electromagnetic plate (3331) set up the one side of keeping away from locating rack (332) in fixed disk (333), swivel becket (3332) sets up the one side that is close to locating rack (332) in fixed disk (333), swivel becket (3332) and locating rack (332) rotate and connect, locating rack (332) and swivel becket (3332) rotate junction upside position and are embedded into pressure sensor (3333), electromagnetic plate (3331) have four, and four electromagnetic plate (3331) are around fixed disk (333) central point evenly distributed, electromagnetic plate (3331) surface is provided with the line friction, fixed disk (333) tangent line of friction line and electromagnetic plate mounted position department is parallel to each other.