CN110293303B - Full-automatic rotor blade damping table wear-resistant layer welding system and welding method - Google Patents
Full-automatic rotor blade damping table wear-resistant layer welding system and welding method Download PDFInfo
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- CN110293303B CN110293303B CN201910550533.XA CN201910550533A CN110293303B CN 110293303 B CN110293303 B CN 110293303B CN 201910550533 A CN201910550533 A CN 201910550533A CN 110293303 B CN110293303 B CN 110293303B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K13/00—Welding by high-frequency current heating
- B23K13/01—Welding by high-frequency current heating by induction heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K13/00—Welding by high-frequency current heating
- B23K13/08—Electric supply or control circuits therefor
Abstract
The invention discloses a full-automatic rotor blade damping platform wear-resistant layer welding system and a method for welding blades based on the same, wherein the welding system comprises a vacuum chamber, a first PLC (programmable logic controller) control system, a blade placing tray, a transmission device, a first manipulator, a binder coating device, a brazing filler metal composite sheet adsorption device, a drying device and a flow inhibitor coating device; the outside of the vacuum chamber is connected with a control cabinet and a welding power supply, a second PLC control system is arranged in the control cabinet, and a welding working platform, a temperature closed-loop control system, a welding induction coil and a second manipulator are arranged in the vacuum chamber; the automatic blade grabbing device can automatically complete the relative actions of blade grabbing, brazing filler metal sheet placing and bonding, flow inhibitor coating, on-line automatic drying, automatic welding and the like, realizes the automation of the welding process, greatly improves the stability and consistency of product quality, realizes automatic and efficient welding production of the blades, and greatly lightens the labor intensity of workers.
Description
Technical Field
The invention belongs to the field of manufacturing of aeroengine blades, and particularly relates to a full-automatic rotor blade damping platform wear-resistant layer welding system and a blade welding method based on the same.
Background
At present, the wear-resistant layer of the adjacent surface of a damping platform of a rotor blade in China is manually lifted, the welding process depends on the operation capability of operators, the requirement on the level of the welding operators is high, the consistency and the stability of the welding quality of the blade are not easy to guarantee, the welding quality is greatly influenced by human factors, the defects of 'electric shock' and the like are caused during welding, and the research on the automatic welding technology is urgently needed.
Disclosure of Invention
The invention aims to provide a full-automatic rotor blade damping platform wear-resistant layer welding system and a method for welding blades based on the same, which can greatly improve the stability and consistency of product quality, realize automatic and efficient welding production of the blades, greatly reduce the labor intensity of workers and meet the requirements on the use safety and reliability of fan rotor blades.
The invention is realized by the following technical scheme:
a full-automatic rotor blade damping table wear layer welding system comprises a vacuum chamber, a first PLC control system, a blade placing tray, a transmission device, a first manipulator and a preparation device before welding; the first manipulator, the transmission device and the pre-welding preparation device are all connected with a first PLC control system; the blade placing tray is used for placing blades and is conveyed to the vacuum chamber through the transmission device; under the control of the first PLC control system, the first manipulator is used for grabbing the blade and conveying the blade to a preparation device before welding;
the outside of the vacuum chamber is connected with a control cabinet and a welding power supply, a second PLC control system is arranged in the control cabinet, and a welding working platform, a welding induction coil and a second manipulator are arranged in the vacuum chamber; the second manipulator is used for grabbing the blade and sending the blade into the welding induction coil; the welding induction coil is connected with a welding power supply, and the welding power supply, the welding work platform and the second manipulator are all connected with the control cabinet.
Further, the preparation device before welding comprises a binder coating device, a brazing filler metal composite sheet adsorption device, a drying device and a flow inhibitor coating device; the binder coating device is used for coating the binder on the adjacent surface of the boss of the blade, the brazing filler metal composite sheet adsorption device is used for placing the brazing filler metal composite sheet on the adjacent surface of the boss of the blade, and the flow inhibitor coating device is used for coating flow inhibitors on two side surfaces of the damping platform of the blade.
Furthermore, the transmission device is placed on a support frame, a slide rail is arranged on the support frame, the support frame comprises a horizontal support and two workbenches symmetrically arranged at one end of the horizontal support, namely a first workbench and a second workbench respectively;
the transmission device adopts an electric trolley, and the electric trolley is connected with the first PLC control system; the first PLC control system controls the electric trolley to move on the slide rail, and the electric trolley places the blade on the tray and conveys the blade to the vacuum chamber.
Furthermore, two sets of electric trolleys are arranged, two blade placing trays are arranged, a first blade placing tray is placed on the first set of electric trolleys, and a second blade placing tray is placed on the second set of electric trolleys; after the first set of electric trolley drives the first blade placing tray to leave the first workbench, the second set of electric trolley is placed on the first workbench.
Further, the welding work platform includes a station and No. two stations, and a station and No. two stations are used for welding the blade of different models.
Further, a control panel is arranged on the control cabinet, and a power key and a display screen are arranged on the control panel;
further, welding temperature and welding time are preset in a second PLC control system;
a temperature closed-loop control system is also arranged in the vacuum chamber, and the temperature closed-loop control system adopts an infrared thermometer and is used for measuring the temperature of the welding position of the blade; the infrared thermometer is connected with the second PLC control system.
Furthermore, cameras are respectively arranged outside and inside the vacuum chamber, the camera outside the vacuum chamber is used for monitoring the area outside the vacuum chamber, and the camera inside the vacuum chamber is used for monitoring the working condition in the vacuum chamber; the camera is connected with the outside host computer, and the camera transmits the video of shooing to the host computer.
And further, a safety pressure protection device is arranged in the vacuum chamber, an alarm device is arranged outside the vacuum chamber, and when the pressure in the vacuum chamber exceeds a set value, the second PLC control system controls the vacuum chamber to automatically release pressure and give an alarm. The method for welding the blades based on the full-automatic rotor blade damping table wear layer welding system comprises the following steps:
s1: sequentially placing a plurality of blades on a blade placing tray;
s2: the first PLC control system controls the blade placing tray to move to the first manipulator;
s3: the first manipulator grabs the first blade and sends the first blade to a preparation device before welding to finish preparation work before welding;
s4: repeating S3 to complete the preparation work before welding of all the blades on the blade placing tray;
s5: the first PLC control system controls the blade placing tray to move into the vacuum chamber;
s6: after the vacuum chamber is vacuumized to a preset vacuum degree, filling protective gas to a preset pressure;
s7: the second manipulator grabs the blade from the blade placing tray and sends the blade into the welding induction coil;
s8: the second PLC control system controls the welding power supply to work, controls the welding induction coil to heat, starts to weld the blade, and after welding is completed, the second mechanical arm puts the blade back on the blade placing tray;
s9: repeating S7-S8 to complete the welding work of all the blades;
s10: the vacuum chamber is opened, and the first PLC control system controls the blade placing tray to return to the initial position;
s11: and taking out the blade to complete welding.
Further, when the pre-welding preparation device includes a binder coating device, a solder composite sheet adsorption device, a drying device, and a flow inhibitor coating device, step S3 specifically includes:
1) the first manipulator grabs the first blade and sends the first blade to the adhesive coating device;
2) the adhesive coating device coats an adhesive on the adjacent surface of the blade boss;
3) the first manipulator grabs the blade and conveys the blade to a brazing filler metal composite sheet adsorption device, the brazing filler metal composite sheet adsorption device absorbs the brazing filler metal composite sheet, and the brazing filler metal composite sheet is placed on the adjacent surface of a boss of the blade;
4) the first manipulator grabs the blade and conveys the blade to a drying device, and the drying device dries the brazing filler metal composite sheet on the blade damping table;
5) the first manipulator grabs the blade and conveys the blade to a choked flow agent painting device, and the choked flow agent painting device coats choked flow agents on two side surfaces of a blade damping platform;
6) the first manipulator grabs the blade and puts the blade back on the blade placing tray, and preparation work before welding of the first blade is completed.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a full-automatic rotor blade damping table wear layer welding system which comprises a vacuum chamber, a first PLC control system, a blade placing tray, a transmission device, a first manipulator and a preparation device before welding; the outside of the vacuum chamber is connected with a control cabinet and a power supply, a second PLC control system is arranged in the control cabinet, and a welding working platform, a welding induction coil and a second manipulator are arranged in the vacuum chamber; the first PLC control system controls the first manipulator to send the blade to a device for preparing the blade before welding, the preparation work before welding such as blade grabbing, brazing filler metal sheet placing and bonding, flow inhibitor smearing, online automatic drying and the like is automatically completed, and the former manual work is replaced; the first PLC control system controls the blade placing tray to enter the vacuum chamber to perform welding work, the second PLC control system starts to work at the moment, the second PLC control system controls the second mechanical arm to convey the blade to the welding induction coil, appropriate welding temperature and time are provided, and the blade damping table is welded. The invention is based on the induction brazing technology, realizes the automation of the whole welding process by automatic control, places the blade damping table in an alternating current magnetic field generated by an induction coil during brazing in the environment of vacuum argon-filled gas protection, and melts and covers a brazing filler metal sheet on the adjacent surface of the blade damping table through high-frequency induction heating. The welding system can automatically complete actions related to welding processes such as blade grabbing, brazing filler metal sheet placing and bonding, flow inhibitor coating, on-line automatic drying and automatic welding, the automation of the welding process is realized by adopting a PLC centralized control method through the cooperation of all the systems, the stability and the consistency of the product quality are greatly improved, the automatic efficient welding production of the blades is realized, the labor intensity of workers is greatly reduced, and the requirements on the use safety and the reliability of the fan rotor blades are met.
Further, the preparation device before welding comprises a binder coating device, a brazing filler metal composite sheet adsorption device, a drying device and a flow inhibitor coating device, and the brazing filler metal sheet placing and bonding, flow inhibitor coating and online automatic drying processes are completed together through the cooperation of the four devices and the first manipulator, so that preparation is made for welding work.
Furthermore, two sets of electric trolleys are arranged, two blade placing trays are arranged, when the first set of electric trolleys drive the first blade placing tray to leave the first workbench, the second set of electric trolleys are placed on the first workbench, and blades are placed on the second blade placing tray; after the first set of electric trolley enters the vacuum chamber, the second set of electric trolley can drive the second blade placing tray to move to the first manipulator, bonding, solder placing and flow resisting agent coating are carried out, and through configuration of the two sets of electric working platforms, the simultaneous implementation of the welding process and the preparation process before welding is met, time is saved, and efficiency is high.
Furthermore, the welding working platform is set to be double stations, automatic welding can be carried out on corresponding welding stations according to the types of the welded blades, and the stations are switched according to the types of the blades.
Furthermore, the welding equipment is provided with the camera, the working process is monitored in real time through the upper computer, the preparation area before welding, two welding stations and the internal working panorama of the vacuum chamber can be detected simultaneously, and the whole-course video monitoring function of the welding process is achieved.
Furthermore, welding temperature and welding time are preset in a second PLC control system, temperature signals measured by the infrared thermodetector are fed back to the second PLC control system, and welding parameters such as the welding temperature, the welding time and the like preset by the second PLC control system control the welding process, so that automatic control of the welding temperature and the welding time is realized.
According to the method for welding the blades based on the full-automatic rotor blade damping table wear layer welding system, the preparation work before welding is automatically completed through the first PLC control system, the first mechanical arm, the blade placing tray and the preparation device before welding; and the automation of the welding process is realized through the cooperation of the second mechanical arm, the vacuum chamber, the blade tray, the temperature closed-loop control system, the power supply, the welding induction coil and the second PLC control system. Through automatic control and industrial manipulator combination together, accomplish rotor blade damping platform adjacent surface wearing layer automatic weld, promote the product and make the level, efficient, realized the high-efficient cladding production of rotor blade wearing layer.
Furthermore, the composite brazing filler metal sheet is placed and bonded on the adjacent surface of the damping platform through the cooperation of the binder coating device, the brazing filler metal composite sheet adsorption device, the drying device and the flow inhibitor coating device, and then the flow inhibitor is coated on line and dried by hot air.
Drawings
FIG. 1 is a block diagram of a plan layout of the present invention;
fig. 2 is a welding flow chart of the present invention.
Wherein, 1 is first manipulator, 2 is the tray is placed for the blade, 3 is the blade, 4 is the horizontal stand, 5 is a workstation, 6 is No. two workstations, 7 is the vacuum chamber, 8 is the switch board, 9 is the second manipulator, 10 is the welding induction coil, 11 is the power, 12 is temperature closed loop control system.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1, the full-automatic rotor blade damping table wear layer welding system of the present invention comprises a vacuum chamber 7, a first PLC control system, a blade placing tray 2, a transmission device, a first manipulator 1 and a preparation device before welding; the first manipulator 1, the transmission device and the pre-welding preparation device are all connected with a first PLC control system; the blade placing tray 2 is used for placing the blades 3, and the blade placing tray 2 is conveyed to the vacuum chamber 7 through a transmission device; under the control of the first PLC control system, the first robot 1 is used to grab the blade 3 and deliver the blade 3 to the pre-welding preparation device.
The outside of the vacuum chamber 7 is connected with a control cabinet 8 and a welding power supply 11, a second PLC control system is arranged in the control cabinet 8, and a welding working platform, a welding induction coil 10 and a second manipulator 9 are arranged in the vacuum chamber 7; the second manipulator 9 is used for grabbing the blade 3 on the blade placing tray 2 and sending the blade into the welding induction coil 10; the welding power supply 11 adopts a high-frequency induction welding power supply 11, the welding induction coil 10 is connected with the welding power supply 11, and the welding power supply 11, the welding work platform and the second manipulator 9 are all connected with the control cabinet 8.
The two sets of control systems can realize the mutual noninterference of the preparation before welding and the welding work and can work synchronously.
Binder coating device, brazing filler metal composite piece adsorption equipment, drying device and choked flow agent device of applying paint with a brush, binder coating device is used for coating the binder for 3 boss adjacent surfaces of blade, and brazing filler metal composite piece adsorption equipment is used for placing the brazing filler metal composite piece on 3 boss adjacent surfaces of blade, and choked flow agent device of applying paint with a brush is used for coating the choked flow agent for 3 damping platform both sides faces of blade.
The transmission device is placed on the support frame, a sliding rail is arranged on the support frame, and the support frame comprises a horizontal support 4 and two workbenches which are symmetrically arranged at one end of the horizontal support 4 and are respectively a workbench 5 and a workbench 6. The transmission device adopts an electric trolley, and the electric trolley is connected with the first PLC control system; the first PLC control system controls the electric trolley to move on the slide rail, and the electric trolley conveys the blade placing tray 2 into the vacuum chamber 7. Place the blade in workstation 5 department, electronic dolly drives the blade and places tray 2 and remove to workstation 6 No. two from workstation 5, and first manipulator 1 is placed near workstation 6 No. two, makes things convenient for first manipulator 1 to snatch blade 3 and prepares work before beginning the welding.
Two sets of electric trolleys are arranged, two blade placing trays 2 are arranged, a first blade placing tray 2 is placed on the first set of electric trolleys, and a second blade placing tray 2 is placed on the second set of electric trolleys; after the first set of electric trolley drives the first blade placing tray 2 to leave the first workbench 5, a second set of electric trolley is placed on the first workbench 5, and blades are placed on the second blade placing tray 2; after the first set of electronic dolly gets into real empty room 7, the second set of electronic dolly just can drive the second blade and place tray 2 and remove to first manipulator 1 department, bonds, brazing filler metal and places and choked flow agent coating, through disposing two sets of electronic work platforms, has satisfied that welding process and weld the preceding preparation process and has gone on simultaneously, saves time, and is efficient.
The welding work platform comprises a first station and a second station, and the first station and the second station are used for welding blades of different models. The equipment has a double-station welding function, and can perform automatic welding at corresponding welding stations through the setting of a PLC control system according to the types of the welded blades; no. one station can weld 60 blades with the length of 300mm at a time, and No. two stations can weld 120 blades with the length of 190mm at a time.
Different induction coils are used because different types of blades need to adopt different welding parameters. The two stations are actually two sets of welding power supplies arranged in the welding power supply and divided into a first station power supply and a second station power supply, the first station power supply and the second station power supply are switched by a switching power supply device, the first station power supply supplies power for the first station, and the second station power supply supplies power for the second station.
And a control panel is arranged on the control cabinet 8, and a power key and a display screen are arranged on the control panel.
The temperature closed-loop control system 12 adopts an infrared thermometer, the temperature of the welding position of the blade can be measured by aligning the infrared rays emitted by the infrared thermometer with the welding position of the blade, the temperature signal measured by the infrared thermometer can be fed back to the second PLC control system, and then the welding process is controlled by the welding parameters preset in the second PLC control system, so that the welding temperature closed-loop control is formed.
Cameras are respectively arranged outside and inside the vacuum chamber 7, the camera outside the vacuum chamber 7 is used for monitoring a preparation system area before welding, and the camera inside the vacuum chamber 7 is used for monitoring the working condition in the vacuum chamber 7; the camera is connected with the outside host computer, and the camera transmits the video of shooing to the host computer. The equipment has the function of monitoring the whole-course video of the welding process, and simultaneously detects the preparation area before welding, two welding stations and the internal working panorama of the vacuum chamber 7.
Welding temperature and welding time are preset in the second PLC control system, automatic control of the welding temperature and the welding time is achieved, and a welding curve can be recorded.
The vacuum chamber 7 is internally provided with a vacuum system, a cooling system, a gas supply system, a pressure balance system and an argon replacement system, the equipment has the functions of pressure balance and argon preservation, so that the environmental pressure in the vacuum chamber 7 is in a set range, and fresh argon is supplemented to enter the vacuum chamber 7.
A safety pressure protection device is arranged in the vacuum chamber 7, an alarm device is arranged outside the vacuum chamber 7, and when the pressure in the vacuum chamber 7 exceeds a set value, the second PLC control system controls the vacuum chamber 7 to automatically release pressure and give an alarm.
As shown in FIG. 2, the method for welding the blades by using the fully automatic rotor blade damping platform wear layer welding system comprises the following steps:
s1: a plurality of blades 3 are sequentially arranged on the blade placing tray 2;
s2: the first PLC control system controls the electric trolley to move, and the electric trolley drives the blade placing tray 2 to move to the first manipulator 1;
s3: the first manipulator 1 grabs a first blade and sends the first blade to the adhesive coating device;
s4: the adhesive coating device coats an adhesive on the adjacent surface of the blade boss;
s5: the first mechanical arm 1 grabs the blade to convey the blade to a brazing filler metal composite sheet adsorption device, the brazing filler metal composite sheet adsorption device absorbs the brazing filler metal composite sheet, and the brazing filler metal composite sheet is placed on the adjacent surface of a boss of the blade;
s6: the first mechanical arm 1 grabs the blade to convey the blade to a drying device, and the drying device dries the brazing filler metal sheet;
s7: the first manipulator 1 grabs the blade to convey the blade to a choked flow agent painting device, and the choked flow agent painting device coats choked flow agents on two side faces of a blade damping platform;
s8: the first manipulator 1 grabs the blade and puts the blade back on the blade placing tray 2 to complete the preparation work before welding the first blade;
s9: repeating S3-S8 to complete the preparation work before welding of all the blades on the blade placing tray 2;
s10: the first PLC control system controls the electric trolley to move, and the electric trolley drives the blade placing tray 2 to move into the vacuum chamber 7;
s11: after the vacuum chamber 7 is vacuumized to a preset vacuum degree, protective gas is filled to a preset pressure;
s12: the second manipulator 9 grabs the blade from the blade placing tray 2 and sends the blade into the welding induction coil 10;
s13: the second PLC control system controls the welding power supply 11 to work, the welding induction coil 10 is heated, the welding of the blade is started, and after the welding is finished, the blade is placed back to the blade placing tray 2;
s14: repeating S12-S13 to complete the welding work of all the blades;
s15: a gate of the vacuum chamber 7 is opened, and the electric trolley of the first PLC control system returns to the initial position;
s16: and taking out the blade from the blade placing tray 2 to finish welding.
The invention designs a full-automatic fan rotor blade welding system which is automatically controlled and combined with an industrial manipulator under a vacuum argon filling environment to complete automatic welding of a wear-resistant layer of an adjacent surface of a rotor blade damping platform. The automatic process comprises the steps of automatically grabbing the rotor blade by a manipulator, automatically placing and bonding brazing filler metal, automatically coating a flow resisting agent, automatically putting the blade into and out of a vacuum chamber, automatically welding the blade, automatically controlling the welding time and temperature, automatically starting and stopping a vacuum obtaining system, a cooling system and a welding power supply, and the like. The system is a novel full-automatic rotor blade damping platform wearing layer welding system, and is mainly applied to the welding processing of the adjacent surface wearing layer of the rotor blade damping platform of an aircraft engine, a gas turbine and a generator.
This rotor blade damping platform wearing layer welding system has improved the uniformity and the stability of blade welding process, promotes the product and makes the level, has realized the high-efficient cladding production of rotor blade wearing layer, is one of the key equipment in blade manufacturing field.
Claims (10)
1. A full-automatic rotor blade damping platform wear layer welding system is characterized by comprising a vacuum chamber (7), a first PLC control system, a blade placing tray (2), a transmission device, a first manipulator (1) and a preparation device before welding; the first manipulator (1), the transmission device and the pre-welding preparation device are all connected with a first PLC control system; the blade placing tray (2) is used for placing the blades (3), and the blade placing tray (2) is conveyed into the vacuum chamber (7) through the transmission device; under the control of a first PLC control system, a first manipulator (1) is used for grabbing a blade (3) and conveying the blade (3) to a preparation device before welding;
a control cabinet (8) and a welding power supply (11) are connected to the outside of the vacuum chamber (7), a second PLC control system is arranged in the control cabinet (8), and a welding working platform, a welding induction coil (10) and a second manipulator (9) are arranged in the vacuum chamber (7); the second manipulator (9) is used for grabbing the blade (3) and sending the blade into the welding induction coil (10); the welding induction coil (10) is connected with a welding power supply (11), and the welding power supply (11), the welding work platform and the second manipulator (9) are all connected with the control cabinet (8).
2. The system for welding the wear-resistant layer of the damping platform of the full-automatic rotor blade as claimed in claim 1, wherein the preparation device before welding comprises a binder coating device, a brazing filler metal composite sheet adsorption device, a drying device and a flow inhibitor coating device; the binder coating device is used for coating the binder on the adjacent surface of the boss of the blade (3), the brazing filler metal composite sheet adsorption device is used for placing the brazing filler metal composite sheet on the adjacent surface of the boss of the blade (3), and the flow inhibitor coating device is used for coating flow inhibitors on two side surfaces of the damping platform of the blade (3).
3. The full-automatic rotor blade damping table wear layer welding system according to claim 1, wherein the transmission device is placed on a support frame, a slide rail is arranged on the support frame, the support frame comprises a horizontal support (4) and two working tables symmetrically arranged at one end of the horizontal support (4), namely a first working table (5) and a second working table (6);
the transmission device adopts an electric trolley, and the electric trolley is connected with the first PLC control system; the first PLC control system controls the electric trolley to move on the sliding rail, and the electric trolley places the blade placing tray (2) and transports the blade placing tray to the vacuum chamber (7).
4. The full-automatic rotor blade damping table wear layer welding system according to claim 3, wherein two sets of electric trolleys are provided, two blade placing trays (2) are provided, a first blade placing tray (2) is placed on the first set of electric trolleys, and a second blade placing tray (2) is placed on the second set of electric trolleys; when the first set of electric trolley drives the first blade placing tray (2) to leave the first workbench (5), the second set of electric trolley is placed on the first workbench (5).
5. The system for welding the wear layer of the damping table of the full-automatic rotor blade as claimed in claim 1, wherein the welding work platform comprises a first station and a second station, and the first station and the second station are used for welding different types of blades.
6. The fully automatic rotor blade damping table wear layer welding system of claim 1, wherein a welding temperature and a welding time are preset in the second PLC control system;
a temperature closed-loop control system (12) is also arranged in the vacuum chamber (7), and the temperature closed-loop control system (12) adopts an infrared thermometer and is used for measuring the temperature of the welding position of the blade; the infrared thermometer is connected with the second PLC control system.
7. The fully automatic rotor blade damping station abradable layer welding system of claim 1, characterized in that a camera is installed outside and inside the vacuum chamber (7), the camera outside the vacuum chamber (7) is used for monitoring the area outside the vacuum chamber (7), and the camera inside the vacuum chamber (7) is used for monitoring the working condition inside the vacuum chamber (7); the camera is connected with the outside host computer, and the camera transmits the video of shooing to the host computer.
8. The full-automatic rotor blade damping platform wear-resistant layer welding system according to claim 1, wherein a safety pressure protection device is arranged in the vacuum chamber (7), an alarm device is arranged outside the vacuum chamber (7), and when the pressure in the vacuum chamber (7) exceeds a set value, the second PLC control system controls the vacuum chamber (7) to automatically release pressure and give an alarm.
9. The method for welding the blades by the full-automatic rotor blade damping platform wear layer welding system based on any one of claims 1 to 8 is characterized by comprising the following steps of:
s1: a plurality of blades (3) are sequentially arranged on the blade placing tray (2);
s2: the first PLC control system controls the blade placing tray (2) to move to the first manipulator (1);
s3: the first manipulator (1) grabs the first blade (3) and sends the first blade to a preparation device before welding to finish preparation work before welding;
s4: repeating S3 to complete the preparation work before welding of all the blades on the blade placing tray (2);
s5: the first PLC control system controls the blade placing tray (2) to move into the vacuum chamber (7);
s6: after the vacuum chamber (7) is vacuumized to a preset vacuum degree, the protective gas is filled to a preset pressure;
s7: the second manipulator (9) grabs the blade from the blade placing tray (2) and sends the blade into the welding induction coil (10);
s8: the second PLC control system controls a welding power supply (11) to work, the welding induction coil (10) is heated, the welding of the blade is started, and after the welding is finished, the blade is placed back on the blade placing tray (2) by a second manipulator (9);
s9: repeating S7-S8 to complete the welding work of all the blades (3);
s10: the vacuum chamber (7) is opened, and the first PLC control system controls the blade placing tray (2) to return to the initial position;
s11: and taking out the blade to complete welding.
10. The method for welding a blade according to claim 9, wherein when the pre-welding preparation device includes an adhesive coating device, a solder composite sheet adsorption device, a drying device, and a flow inhibitor applying device, step S3 is embodied as:
1) the first manipulator (1) grabs the first blade (3) and sends the first blade to the adhesive coating device;
2) the adhesive coating device coats an adhesive on the adjacent surface of the blade boss;
3) the first mechanical arm (1) grabs the blade (3) and conveys the blade (3) to a brazing filler metal composite sheet adsorption device, the brazing filler metal composite sheet adsorption device absorbs the brazing filler metal composite sheet, and the brazing filler metal composite sheet is placed on the adjacent surface of a lug boss of the blade;
4) the first mechanical arm (1) grabs the blade (3) and conveys the blade (3) to a drying device, and the drying device dries the blade (3);
5) the first mechanical arm (1) grabs the blade (3) and conveys the blade (3) to a flow resisting agent coating device, and the flow resisting agent coating device coats flow resisting agents on two side faces of a blade damping platform;
6) the first mechanical arm (1) grabs the blade (3) and puts the blade (3) back on the blade placing tray (2), and preparation work before welding of the first blade is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910550533.XA CN110293303B (en) | 2019-06-24 | 2019-06-24 | Full-automatic rotor blade damping table wear-resistant layer welding system and welding method |
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| CN201910550533.XA CN110293303B (en) | 2019-06-24 | 2019-06-24 | Full-automatic rotor blade damping table wear-resistant layer welding system and welding method |
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| CN110293303A CN110293303A (en) | 2019-10-01 |
| CN110293303B true CN110293303B (en) | 2021-05-25 |
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