Three-eccentric valve welding system based on welding robot
Technical Field
The utility model relates to the technical field of welding devices, in particular to a three-eccentric-valve welding system based on a welding robot.
Background
A valve is a device for controlling the direction, pressure, and flow rate of a fluid in a fluid system, and a valve is a device capable of controlling the flow rate of a medium (liquid, gas, or powder) in a pipe or equipment by flowing or stopping the medium.
At present, manual surfacing is mostly adopted for surfacing of a sealing surface of a three-eccentric butterfly valve, the position of a workpiece needs to be changed continuously in the welding process, the surfacing of the sealing surface can be met, and the welding quality is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a welding system of a three-eccentric-center valve based on a welding robot, and aims to solve the problems that the sealing surface efficiency of the three-eccentric-center butterfly valve is low and the welding quality is poor in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme: three eccentric valve welding system based on welding robot, including the floor, the top on floor is provided with three eccentric valves, one side of three eccentric valves is provided with the positioning fixture who is used for fixed three eccentric valve inner circles, one side of positioning fixture is provided with and drives positioning fixture pivoted rotating device, one side that rotating device kept away from positioning fixture is provided with and drives rotating device pivoted slewer, slewer's bottom is provided with lateral shifting device, just lateral shifting device is used for driving slewer removes along the transverse direction, still be provided with six robots and welder on the floor, six robots are used for centre gripping welder to weld three eccentric valves, fixedly connected with is to clearance welder's gun cleaning device on the floor.
According to a further technical scheme, the positioning fixture adopts a three-jaw chuck, the rotating device comprises a C-shaped plate, the positioning fixture is rotatably connected with the C-shaped plate, a first servo motor is fixedly installed on the inner side wall of the C-shaped plate, the output end of the first servo motor is fixedly connected with a speed reducer, and the output end of the speed reducer is fixedly connected with the positioning fixture through a driving shaft.
According to a further technical scheme, the slewing device comprises an outer shell, a second servo motor is fixedly mounted on the inner side wall of the outer shell, the output end of the second servo motor is fixedly connected with a driving gear through a rotating shaft, one end of the rotating shaft is rotatably connected with the outer shell, the driving gear is meshed with a driven gear, the interior of the driven gear is fixedly connected with a movable rod, two ends of the movable rod are connected with the outer shell through bearings, the interior of the outer shell is rotatably connected with a connecting rod, a sector gear is fixedly connected to the outer surface of the connecting rod and meshed with the driven gear, and the connecting rod is fixedly connected with a C-shaped plate.
According to a further technical scheme, the central angle of the sector gear is an angle.
According to a further technical scheme, the transverse moving device comprises a base which is connected with the outer shell in a sliding mode, a stepping motor is fixedly installed on one side of the base, a lead screw is fixedly connected to the output end of the stepping motor, a thread plate is connected to the outer surface of the lead screw in a threaded mode, and the thread plate is fixedly connected with the outer shell.
According to a further technical scheme, a welding machine and a gas cylinder are arranged on the floor, the welding machine is electrically connected with the welding gun through a lead, and the gas cylinder is fixedly connected with the welding gun through a gas transmission pipe.
The further technical scheme of the utility model is that the floor is provided with a welding smoke dust purifier.
The six-axis robot is JZJA-, and an anti-collision sensor is fixedly arranged on the six-axis robot and is positioned on one side of a welding gun.
According to a further technical scheme, a safety fence is arranged at the top of the floor.
The utility model has the beneficial effects that:
1. use behind the inner circle of the fixed triple offset valve of positioning fixture, drive positioning fixture through rotating device and rotate, use slewer to drive rotating device and rotate, thereby make triple offset valve can the multi-angle rotation, consider that the welding seam is the space curve distribution, welding process needs constantly to alternate the work piece position, just can satisfy the build-up welding of sealed face, coordinate the linkage through six robots and slewer and rotating device, welding orbit deviation and the bad problem of shaping have been avoided, the probability of the artifical repair in later stage and rework that significantly reduces, welding thickness is even, reduce the later stage adds the work load in man-hour, the total manufacturing cost of valve body reduces, the quality promotes.
2. Second servo motor drives the driving gear through the pivot and rotates, and the driving gear drives sector gear through driven gear and rotates, consequently can drive the C template and rotate, can adjust three eccentric valve's angle for three eccentric valve's sealed face is towards six robots, the welding of being convenient for, and the upset motion scope of C template is extremely the degree, avoids slewer and rotating device to bump, perhaps three eccentric valve and slewer to bump's problem.
3. Step motor passes through the lead screw and drives the threading board lateral shifting, thereby drive three eccentric valve lateral shifting, can adjust the distance between three eccentric valves and the six robots, when being convenient for to weld, also easy to assemble or dismantle three eccentric valves, the toxic material that produces among the welding smoke and dust clarifier can the absorption welding process, good operational environment has been built, through setting up anticollision sensor, avoid among the welding process, welder collides with the problem of the inner circle of three eccentric valves, through setting up safety fence, can be in welding process, protect staff's safety.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a schematic front view of an embodiment of the present invention;
FIG. 3 is a schematic view of a floor structure of an embodiment of the present invention;
FIG. 4 is a schematic view of a turning gear and a turning gear according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a six-axis robot configuration in accordance with an exemplary embodiment of the present invention;
FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5 according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a lateral shifting device according to an embodiment of the present invention.
In the figure: 1. a floor; 2. a triple eccentric valve; 3. positioning a clamp; 4. a rotating device; 401. c-shaped plates; 402. a first servo motor; 403. a speed reducer; 5. a turning device; 501. an outer housing; 502. a second servo motor; 503. a rotating shaft; 504. a driving gear; 505. a driven gear; 506. a movable rod; 507. a connecting rod; 508. a sector gear; 6. a lateral movement device; 601. a base; 602. a stepping motor; 603. a screw rod; 604. a thread plate; 7. a six-axis robot; 8. a welding gun; 9. a gun cleaning device; 10. a welding machine; 11. a gas cylinder; 12. a welding fume purifier; 13. an anti-collision sensor; 14. a safety fence.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-7, a welding robot-based triple eccentric valve welding system comprises a floor 1, a triple eccentric valve 2 is arranged above the floor 1, a positioning fixture 3 for fixing an inner ring of the triple eccentric valve 2 is arranged on one side of the triple eccentric valve 2, a rotating device 4 for driving the positioning fixture 3 to rotate is arranged on one side of the positioning fixture 3, a rotating device 5 for driving the rotating device 4 to rotate is arranged on one side, away from the positioning fixture 3, of the rotating device 4, a transverse moving device 6 is arranged at the bottom of the rotating device 5, the transverse moving device 6 is used for driving the rotating device 5 to move in the transverse direction, a six-axis robot 7 and a welding gun 8 are further arranged on the floor 1, the six-axis robot 7 is used for clamping the welding gun 8 to weld the triple eccentric valve 2, and a gun cleaning device 9 for cleaning the welding gun 8 is fixedly connected to the floor 1.
In this embodiment, after the inner circle of three eccentric valves 2 is fixed with positioning fixture 3, drive positioning fixture 3 through rotating device 4 and rotate, use slewer 5 to drive rotating device 4 and rotate, thereby make three eccentric valves 2 can the multi-angle rotation, consider that the welding seam is the space curve distribution, welding process need constantly alternate the work piece position, just can satisfy the build-up welding of sealed face, coordinate the linkage through six robots 7 and slewer 5 and rotating device 4, welding track deviation and the bad problem of shaping have been avoided, the probability of artifical repair in the later stage and rework is greatly reduced, welding thickness is even, reduce the work load of later stage secondary operation man-hour, the overall manufacturing cost of valve body reduces, the quality promotes, the clear rifle device is used for cutting the silk, oil spout and clearance welding slag, belong to prior art, no longer describe.
In another embodiment of the present invention, the positioning fixture 3 is a three-jaw chuck, the rotating device 4 includes a C-shaped plate 401, the positioning fixture 3 is rotatably connected to the C-shaped plate 401, a first servo motor 402 is fixedly mounted on an inner side wall of the C-shaped plate 401, an output end of the first servo motor 402 is fixedly connected to a speed reducer 403, an output end of the speed reducer 403 is fixedly connected to the positioning fixture 3 through a driving shaft, and the first servo motor 402 drives the positioning fixture 3 to rotate through the speed reducer 403, so that the three-eccentric valve 2 can rotate by three hundred and sixty degrees.
Specifically, the turning device 5 includes an outer casing 501, a second servo motor 502 is fixedly installed on the inner side wall of the outer casing 501, an output end of the second servo motor 502 is fixedly connected with a driving gear 504 through a rotating shaft 503, one end of the rotating shaft 503 is rotatably connected with the outer casing 501, the driving gear 504 is engaged with a driven gear 505, an inner portion of the driven gear 505 is fixedly connected with a movable rod 506, two ends of the movable rod 506 are connected with the outer casing 501 through bearings, the inner portion of the outer casing 501 is rotatably connected with a connecting rod 507, an outer surface of the connecting rod 507 is fixedly connected with a sector gear 508, the sector gear 508 is engaged with the driven gear 505, the connecting rod 507 is fixedly connected with the C-shaped plate 401, the second servo motor 502 drives the driving gear 504 to rotate through the rotating shaft 503, the driving gear 504 drives the sector gear 508 to rotate through the driven gear 505, thereby driving the C-shaped plate 401 to rotate, and adjusting the angle of the three-eccentric valve 2, the sealing surface of the three-eccentric valve 2 faces the six-axis robot 7, so that welding is facilitated.
Specifically, the central angle of the sector gear 508 is 110 degrees, and the turning action range of the C-shaped plate 401 is 0 to 110 degrees, so that the problem that the rotating device 5 collides with the rotating device 4 or the three-eccentric-valve 2 collides with the rotating device 5 is solved.
Specifically, lateral shifting device 6 includes base 601 with shell body 501 sliding connection, one side fixed mounting of base 601 has step motor 602, step motor 602's output fixedly connected with lead screw 603, the surface threaded connection of lead screw 603 has threading board 604, threading board 604 and shell body 501 fixed connection, step motor 602 drives threading board 604 lateral shifting through lead screw 603, thereby drive three eccentric valve 2 lateral shifting, can adjust the distance between three eccentric valve 2 and the six-axis robot 7, when being convenient for to weld, also easy to assemble or dismantle three eccentric valve 2.
Specifically, a welding machine 10 and a gas cylinder 11 are arranged on the floor 1, the welding machine 10 is electrically connected with a welding gun 8 through a lead, the gas cylinder 11 is fixedly connected with the welding gun 8 through a gas transmission pipe, the welding machine 10 provides electric energy for the welding gun 8, the gas cylinder 11 can transmit gas shielded welding to the welding gun 8, it is required to be noted that the welding gun 8 adopts a gas shielded welding water-cooling welding gun, a wire feeding mechanism is arranged on the welding gun 8, the wire feeding speed is 1.4-24 m/min, and the welding method can adopt carbon dioxide, MAG, MMA, solid welding wires, flux-cored welding wires or welding electrodes.
Specifically, the floor 1 is provided with the welding smoke purifier 12, and the welding smoke purifier 12 can absorb toxic substances generated in the welding process, so that a good working environment is created.
Specifically, the model of the six-axis robot 7 is JZJ20A-188, the six-axis robot 7 is fixedly provided with the anti-collision sensor 13, the anti-collision sensor 13 is located on one side of the welding gun 8, the model of the anti-collision sensor 13 is TH6D-150-KFMC-AB, and the problem that the welding gun 8 collides with the inner ring of the three-eccentric valve 2 in the welding process is solved by arranging the anti-collision sensor 13.
Specifically, the top of the floor 1 is provided with a safety fence 14, and by arranging the safety fence 14, the safety of workers can be protected in the welding process.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.