Efficient welding equipment and method for composite material tool

Abstract

The invention provides efficient welding equipment for a composite material tool and a method of the efficient welding equipment, and relates to the technical field of laser welding equipment. According to the efficient welding equipment and method for the composite material tool, a base and four sets of laser welding heads are included, and a top frame is fixedly connected to the position, close to the rear wall, of the upper wall of the base through a supporting frame. According to the welding device, four sets of laser welding heads driven by the intelligent mechanical arms are arranged in the welding box, welding operation can be conducted on the front side, the rear side, the left side and the right side of a composite material tool at the same time, and the intelligent mechanical arms can be driven by the second lifting drive to move upwards to the opening of the tool, so that the intelligent mechanical arms can stretch into the tool for welding; welding of the inner four sides and the outer four sides is completed through sequential clamping, the efficiency of welding operation is greatly improved, the rotatable rotary table is arranged, material changing can be achieved while welding is conducted, the problem of long clamping time is effectively solved, and the efficiency of welding operation is improved again.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding equipment, and in particular to a high-efficiency welding equipment for composite material tooling and a method thereof. Background Art

[0002] The air inlet parts of early aircraft were all made of metal aluminum alloy, and the fault was that cracks were easy to form in the local area of ​​the air inlet. With the development of technology, technicians found that the use of composite materials to manufacture air inlets has obvious advantages, mainly including: composite materials have excellent corrosion resistance, which can achieve long-term use and low-cost maintenance; composite materials have better fatigue resistance than metal materials, and are suitable for parts such as air inlets that are subjected to vibration loads for a long time; for environmental conditions such as ultraviolet radiation of the air inlet, the glass fiber and carbon fiber composite materials themselves have good weather resistance, and through the protection of the surface three-proof paint, they can meet the requirements of outdoor use conditions such as ultraviolet, cold and heat, and corrosion; The production of composite air intake ducts requires the use of split tooling. In order to adapt to the complex curved surface shape of the air intake duct, the tooling is usually formed by split processing and then laser welding. The existing ordinary laser welding equipment is not efficient enough when welding composite tooling. For example, the airtight intelligent welding device and method for composite air intake duct tooling proposed in the existing public technology, the airtight intelligent welding device for composite air intake duct tooling, includes a welding processing workbench, the upper surface of the welding processing workbench is fixedly connected to two symmetrically arranged supporting mounting frames, and a cylindrical welding shell is fixedly connected between the two supporting mounting frames. According to the present invention, a carbon dioxide generator is started, and the carbon dioxide generated by the carbon dioxide generator enters into the right conical shell through the second connecting pipe, and then enters into the cylindrical welding shell through the right conical shell. At the same time, an induced draft fan is started, and the induced draft fan extracts air from the cylindrical welding shell through the first connecting pipe. The circular cylindrical welding shell and the conical right conical shell and the left conical shell are matched, so that oxygen in the sealed environment is not easy to hide, and oxygen is easier to be discharged, thereby improving the welding effect. The disclosed technology improves the filling effect of the protective gas and improves the welding effect, but its welding efficiency is not improved. Therefore, it is necessary to improve and optimize the high-efficiency welding equipment and method of composite material tooling to improve the welding efficiency. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a high-efficiency welding device and method for composite tooling, which solves the problem of low efficiency of the high-efficiency welding device and method for composite tooling in the prior art.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-efficiency welding equipment for composite tooling, comprising a base and four groups of laser welding heads, wherein the upper wall of the base and near the rear wall is fixedly connected to a top frame through a support frame, the lower wall of the top frame and the front wall of the support frame are jointly fixedly connected to a welding box, the lower side of the welding box is open, the inner front wall, the inner rear wall, the inner left wall and the inner right wall of the welding box are slidably connected to a back plate through two groups of slide rails, the back plate is fixedly connected to a support plate on one side facing the center of the welding box and near the lower wall, an intelligent manipulator is arranged on the upper wall of the support plate, and the four groups of laser welding heads are provided. The heads are respectively arranged at one end of a group of intelligent manipulators away from the support plate, the visual sensor is fixedly connected to the inner upper wall of the welding box and in the center position, the inner wall of the base is slidably connected to a sliding seat through two groups of sliding blocks at the front side of the support frame, the inner left wall and the inner right wall of the base are both provided with sliding grooves, the two groups of sliding blocks are respectively slidably connected to the inner walls of a group of sliding grooves, the upper wall of the sliding seat is fixedly connected with a fixed sleeve, the inner wall of the fixed sleeve is slidably connected with a sliding sleeve, the upper wall of the sliding sleeve is rotatably connected with a turntable, and two groups of workbenches are sequentially arranged on the upper wall of the turntable in a front-to-back distribution, and the outer dimensions of the workbenches are adapted to the inner wall of the welding box.

[0005] Preferably, a translation driving structure for driving the sliding seat to move forward and backward is arranged between the base and the fixed sleeve, a partition is fixedly connected to the inner side wall of the sliding sleeve, a rotation driving structure for driving the turntable to rotate is arranged between the partition and the turntable, a first lifting driving structure for driving the turntable to lift and lower is arranged between the partition and the sliding seat, a second lifting driving structure for driving the backplate to move up and down to increase the welding range of the laser welding head is arranged between the welding box and the backplate, and an exhaust structure for extracting smoke generated during welding is arranged on the top of the welding box.

[0006] Preferably, the translation driving structure includes a fixed plate and a first cylinder, the fixed plate is fixedly connected to the upper wall of the base and is located inside the support frame, the fixed plate is located on the upper wall of the base and close to the rear wall, the first cylinder is fixedly connected to the upper wall of the fixed plate, and the end of the shaft extending from the first cylinder is fixedly connected to the rear wall of the fixed sleeve.

[0007] Preferably, the rotary drive structure is a second motor, which is fixedly connected to the lower wall of the partition, and the extension shaft of the second motor passes through the inner wall of the partition and extends above the partition, and the end of the extension shaft of the second motor extending above the partition is fixedly connected to the lower wall of the turntable.

[0008] Preferably, the first lifting drive structure includes two groups of second cylinders, the two groups of second cylinders are fixedly connected to the upper wall of the sliding seat and are located inside the fixed sleeve, and the extended shaft ends of the two groups of second cylinders are fixedly connected to the lower wall of the partition.

[0009] Preferably, the second lifting drive structure includes a first motor, a screw, a rotating seat and a connecting seat, the first motor is fixedly connected to the inner wall of the welding box and is located between two sets of slide rails, the first motor is located near the top of the welding box, the screw is fixedly connected to the end of the extended shaft of the first motor, the connecting seat is fixedly connected to the side of the back plate facing the center of the welding box, the rotating seat is fixedly connected to the inner wall of the welding box and is opposite to the first motor in up and down, the end of the screw away from the first motor passes through the inner wall of the connecting seat, the inner wall of the support plate and the inner wall of the rotating seat in sequence, the screw and the connecting seat are threadedly connected, the screw and the support plate are slidingly connected, and the screw and the rotating seat are rotatingly connected.

[0010] Preferably, the exhaust structure includes an exhaust duct and an exhaust fan, the exhaust fan is fixedly connected to the top of the welding box, the exhaust duct is fixedly connected between the exhaust fan inlet end and the upper wall of the welding box, and the end of the exhaust duct away from the exhaust fan passes through the upper wall of the welding box and is connected to the interior of the welding box.

[0011] Preferably, a tooling clamping plate is provided on the upper wall of the workbench, and a sealing gasket is sleeved on the outer wall of the peripheral side of the workbench. When the workbench is docked with the welding box, the outer wall of the sealing gasket is slidably connected with the inner wall of the welding box.

[0012] Preferably, the outer wall of the welding box is fixedly connected with a pipeline outer sleeve, and the pipeline outer sleeve passes through the side wall of the welding box and extends into the interior of the welding box toward one end of the welding box. The end of the pipeline outer sleeve extending into the interior of the welding box is connected to the laser welding head through a pipeline inner sleeve.

[0013] According to the above-mentioned welding method of a high-efficiency welding device for composite material tooling, the method comprises the following steps: S1, clamping and loading, clamping and fixing the composite material tooling to be welded on the upper wall of the front side of the two sets of tooling clamping plates, after the clamping is completed, the second motor starts to rotate 180 degrees, driving the two sets of tooling clamping plates to exchange positions, after the exchange of positions, the first cylinder extends the shaft and retracts, driving the tooling clamping plates holding the composite material tooling to move to the bottom of the welding box, and the second cylinder extends the shaft and drives the turntable to rise until the worktable completely enters the inner wall of the welding box; S2, external welding operation, start the exhaust fan, continuously extract the air inside the welding box through the exhaust pipe, identify the specific position of the composite material tooling through the visual sensor, and start four sets of intelligent manipulators based on the identified position and the set welding program. The four sets of intelligent manipulators respectively drive a set of laser welding heads close to the four sides of the composite material tooling to weld the outer walls of the front, back, left, and right sides of the composite material at the same time; S3, internal welding operation. When the external welding operation is completed, the first motor starts to drive the screw to rotate, and the back plate and the support plate are driven to move upward through the threaded connection between the screw and the connecting seat. After the four sets of intelligent manipulators move up to the end of the upper stroke, they can drive the laser welding head from the upper opening of the tooling to the inside of the tooling to weld the inside of the composite material tooling; S4, material change. During the internal and external welding of the composite tooling, another group of composite tooling to be welded is clamped on a group of workbenches located outside the welding box. After the internal and external welding of the composite tooling is completed, the second cylinder extends the shaft and retracts, driving the turntable to descend until the worktable is completely separated from the welding box. The first cylinder extends the shaft and drives the sliding seat forward until the turntable stops at a position where it does not interfere with the support frame when rotating. The second motor starts, driving the turntable to rotate 180 degrees, switching the positions of the two groups of workbenches. The newly replaced composite tooling continues to repeat the above steps for welding, and the welded composite tooling is unloaded at the same time.

[0014] The present invention provides a high-efficiency welding device and method for composite material tooling, which has the following beneficial effects: 1. Compared with the prior art, the high-efficiency welding equipment and method of the composite material tooling are equipped with four groups of laser welding heads driven by intelligent manipulators inside the welding box, which can simultaneously perform welding operations on the front, back, left, and right sides of the composite material tooling. The intelligent manipulator can be driven to move up to the tooling opening through the second lifting drive, so that the intelligent manipulator can be extended into the tooling for welding, and the welding of the four inner sides and the four outer sides is completed by clamping in sequence, which greatly improves the efficiency of the welding operation.

[0015] 2. Compared with the prior art, the efficient welding equipment and method of the composite material tooling are provided with a rotatable turntable, which can realize material replacement during welding, effectively solving the problem of long clamping time and once again improving the efficiency of welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a top view schematic diagram of the internal structure of the welding box of the present invention; Figure 3 It is a partial cross-sectional schematic diagram of the internal structure of the welding box of the present invention; Figure 4 It is a partial schematic diagram of the back plate, support plate, connection seat and screw connection structure of the present invention; Figure 5 It is a partial cross-sectional schematic diagram of the connection structure between the sliding seat and the base of the present invention; Figure 6 It is a partial cross-sectional schematic diagram of the internal structure of the fixed sleeve and the sliding sleeve of the present invention.

[0017] Among them, 1. base; 101. slide; 2. support frame; 3. top frame; 4. welding box; 5. fixed plate; 6. first cylinder; 7. sliding seat; 701. sliding block; 8. fixed sleeve; 9. sliding sleeve; 10. turntable; 11. workbench; 12. sealing gasket; 13. tooling clamping plate; 14. exhaust duct; 15. exhaust fan; 16. pipeline outer casing; 17. back plate; 18. support plate; 19. intelligent manipulator; 20. visual sensor; 21. slide rail; 22. first motor; 23. screw; 24. rotating seat; 25. pipeline inner casing; 26. connecting seat; 27. partition; 28. second cylinder; 29. ​​second motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example: like Figures 1 to 6As shown, an embodiment of the present invention provides a high-efficiency welding device for composite tooling, including a base 1 and four groups of laser welding heads. The upper wall of the base 1 and the position near the rear wall are fixedly connected to a top frame 3 through a support frame 2. The lower wall of the top frame 3 and the front wall of the support frame 2 are jointly fixedly connected to a welding box 4. The lower side of the welding box 4 is open. The inner front wall, the inner rear wall, the inner left wall and the inner right wall of the welding box 4 are slidably connected to a back plate 17 through two groups of slide rails 21. The back plate 17 is fixedly connected to a support plate 18 on one side facing the center of the welding box 4 and close to the lower wall. An intelligent manipulator 19 is provided on the upper wall of the support plate 18. A visual sensor 20 is fixedly connected to the inner upper wall and the center position of the welding box 4. The inner wall of the base 1 and the front side of the support frame 2 are slidably connected to a sliding seat 7 through two groups of sliding blocks 701. The inner left wall and the inner right wall of the base 1 are both provided with slide grooves 101. The two groups of sliding blocks 701 are respectively slidably connected to the inner walls of a group of slide grooves 101. The upper wall of the sliding seat 7 is fixedly connected to the inner wall of the sliding seat 7. A fixed sleeve 8 is fixedly connected, and a sliding sleeve 9 is slidably connected to the inner wall of the fixed sleeve 8. A turntable 10 is rotatably connected to the upper wall of the sliding sleeve 9. Two groups of workbenches 11 are arranged in sequence on the upper wall of the turntable 10 in a front-to-back distribution. The outer dimensions of the workbenches 11 are adapted to the inner wall of the welding box 4. In this embodiment, the laser welding head, the visual sensor 20 and the intelligent manipulator 19 are all mature technologies currently available on the market. The laser welding head utilizes high-energy laser pulses to perform local heating of the material in a small area. The energy of the laser radiation diffuses to the inside of the material through heat conduction, and the material is melted to form a specific molten pool to achieve the purpose of welding. The intelligent manipulator 19 includes a manipulator composed of multiple arms, a detector for analyzing the welding trajectory, a gas pipe for conveying protective gas, and a control device. The visual sensor 20 is used to identify the position of the composite material tooling. The position information combined with the set welding trajectory can be used to drive the laser welding head to perform welding operations through the intelligent manipulator 19.

[0020] In order to facilitate the power supply and gas supply of the intelligent manipulator 19 and the laser welding head, the outer wall of the welding box 4 is fixedly connected with a pipeline outer sleeve 16, and the end of the pipeline outer sleeve 16 facing the welding box 4 passes through the side wall of the welding box 4 and extends into the interior of the welding box 4. The end of the pipeline outer sleeve 16 extending into the interior of the welding box 4 is connected to the laser welding head through a pipeline inner sleeve 25, and the power supply line, control line and protective gas delivery pipeline are all passed through the pipeline outer sleeve 16 and the pipeline inner sleeve 25. In order to facilitate the clamping of the composite material tooling, a tooling clamping plate 13 is provided on the upper wall of the workbench 11, and a sealing gasket 12 is provided on the outer wall of the side of the workbench 11. When the workbench 11 is docked with the welding box 4, the outer wall of the sealing gasket 12 is slidably connected with the inner wall of the welding box 4. The two groups of workbenches 11 are both provided with tooling clamping plates 13, so that one group can be involved in the welding operation while the other group is clamped or unloaded, which effectively improves the work efficiency; In order to facilitate clamping or unloading on the tooling clamping plate 13, a translation driving structure for driving the sliding seat 7 to move forward and backward is arranged between the base 1 and the fixed sleeve 8. The translation driving structure includes a fixing plate 5 and a first cylinder 6. The fixing plate 5 is fixedly connected to the upper wall of the base 1 and is located inside the support frame 2. The fixing plate 5 is located on the upper wall of the base 1 and close to the rear wall. The first cylinder 6 is fixedly connected to the upper wall of the fixing plate 5. The end of the first cylinder 6 extending shaft is fixedly connected to the rear wall of the fixing sleeve 8. When the workbench 11 is not connected to the welding box 4, the first cylinder 6 extends the shaft and retracts, which can drive the turntable 10 to move forward and backward. When moving forward, the turntable 10 will not interfere with the support frame 2 when rotating. At the same time, the front group of the two groups of workbenches 11 is away from the welding box 4, which can facilitate the clamping, fixing and disassembly of the composite material tooling. When the turntable 10 moves backward to the end of the rear stroke, a group of workbenches 11 located on the rear side is opposite to the welding box 4 up and down, which is convenient for the workbench 11 to be combined with the welding box 4; In order to realize the action of switching the positions of the two groups of workbenches 11, a partition 27 is fixedly connected to the inner wall of the sliding sleeve 9, and a rotation driving structure for driving the turntable 10 to rotate is arranged between the partition 27 and the turntable 10, and the rotation driving structure is a second motor 29, and the second motor 29 is fixedly connected to the lower wall of the partition 27, and the second motor 29 extends the shaft through the inner wall of the partition 27 and extends to the top of the partition 27, and the second motor 29 extends the shaft to the end above the partition 27 and is fixedly connected to the lower wall of the turntable 10. When the worktable 11 is not combined with the welding box 4 and the first cylinder 6 is in the extended state, the rotation of the second motor 29 can drive the turntable 10 to rotate. The second motor 29 is a common reduction motor on the market, which has the characteristics of large torque. After the second motor 29 rotates 180 degrees, it can drive the two groups of workbenches 11 to switch their positions with each other; In order to realize the combination and separation between the workbench 11 and the welding box 4, a first lifting drive structure for driving the turntable 10 to rise and fall is arranged between the partition 27 and the sliding seat 7. The first lifting drive structure includes two groups of second cylinders 28. The two groups of second cylinders 28 are fixedly connected to the upper wall of the sliding seat 7 and are both located inside the fixed sleeve 8. The ends of the extended shafts of the two groups of second cylinders 28 are fixedly connected to the lower wall of the partition 27. After the extended shaft of the first cylinder 6 is retracted, the extended shaft of the second cylinder 28 is extended and retracted to drive the turntable 10 to rise and fall, so as to realize the combination and separation between the workbench 11 and the welding box 4; In order to improve the welding efficiency, four groups of laser welding heads are respectively arranged at one end of a group of intelligent manipulators 19 away from the support plate 18. A second lifting drive structure is arranged between the welding box 4 and the back plate 17 to drive the back plate 17 to move up and down to increase the welding range of the laser welding head. The second lifting drive structure includes a first motor 22, a screw 23, a rotating seat 24 and a connecting seat 26. The first motor 22 is fixedly connected to the inner wall of the welding box 4 and is located between the two groups of slide rails 21. The first motor 22 is located near the top of the welding box 4. The screw 23 is fixedly connected to the end of the shaft extending from the first motor 22. The connecting seat 26 is fixedly connected to the side of the back plate 17 facing the center of the welding box 4. The rotating seat 24 is fixedly connected to the inner wall of the welding box 4 and is connected to the first motor 22. The machines 22 are opposite to each other up and down, and the end of the screw 23 away from the first motor 22 passes through the inner wall of the connecting seat 26, the inner wall of the support plate 18 and the inner wall of the rotating seat 24 in sequence. The screw 23 and the connecting seat 26 are threadedly connected, the screw 23 and the support plate 18 are slidingly connected, and the screw 23 and the rotating seat 24 are rotatingly connected. Four groups of laser welding heads can simultaneously weld the front, back, left, and right sides of the composite material tooling. The support plate 18 drives the screw 23 to rotate through the rotation of the first motor 22 to achieve ascent and descent. After rising to the end of the upper stroke, the intelligent manipulator 19 can unfold multiple groups of arms to drive the laser welding head to enter the tooling, and synchronously weld the four sides of the tooling. All welds are clamped and welded at one time, which greatly improves the welding efficiency. In order to prevent the protective gas and welding smoke from affecting the workshop environment during welding, an exhaust structure for extracting the smoke generated during welding is provided on the top of the welding box 4. The exhaust structure includes an exhaust pipe 14 and an exhaust fan 15. The exhaust fan 15 is fixedly connected to the top of the welding box 4. The exhaust pipe 14 is fixedly connected between the inlet end of the exhaust fan 15 and the upper wall of the welding box 4. The end of the exhaust pipe 14 away from the exhaust fan 15 passes through the upper wall of the welding box 4 and is connected to the inside of the welding box 4. During welding operation, the air inside the welding box 4 is continuously sucked away by the exhaust fan 15 through the exhaust pipe 14 and sent to a common welding smoke treatment device on the market for smoke treatment to prevent the smoke from affecting the workshop environment.

[0021] According to the above-mentioned welding method of a high-efficiency welding device for composite material tooling, the method comprises the following steps: S1, clamping and loading materials, clamping and fixing the composite material tooling to be welded on a set of upper walls near the front side of the two sets of tooling clamping plates 13, after clamping is completed, the second motor 29 starts to rotate 180 degrees, driving the two sets of tooling clamping plates 13 to exchange positions, after the exchange of positions, the first cylinder 6 extends the shaft and retracts, driving the tooling clamping plates 13 holding the composite material tooling to move to the bottom of the welding box 4, and the second cylinder 28 extends the shaft and extends, driving the turntable 10 to rise until the workbench 11 completely enters the inner wall of the welding box 4; S2, external welding operation, start the exhaust fan 15, and continuously extract the air inside the welding box 4 to the outside through the exhaust pipe 14, identify the specific position of the composite material tooling through the visual sensor 20, and start the four groups of intelligent manipulators 19 according to the identified position and the set welding program. The four groups of intelligent manipulators 19 respectively drive a group of laser welding heads to approach the four sides of the composite material tooling to weld the four outer walls of the composite material at the same time; S3, internal welding operation, when the external welding operation is completed, the first motor 22 is started, driving the screw 23 to rotate, and the back plate 17 and the support plate 18 are driven to move upward through the threaded connection relationship between the screw 23 and the connecting seat 26. After the four sets of intelligent manipulators 19 move up to the end of the upper stroke, they can drive the laser welding head from the upper opening of the tooling to the inside of the tooling to weld the inside of the composite material tooling; S4, changing materials. During the internal and external welding of the composite material tooling, another group of composite material tooling to be welded is clamped on a group of workbenches 11 located outside the welding box 4. After the internal and external welding of the composite material tooling is completed, the second cylinder 28 extends the shaft and retracts, driving the turntable 10 to descend until the workbench 11 is completely separated from the welding box 4. The first cylinder 6 extends the shaft and drives the sliding seat 7 to move forward until the turntable 10 stops at a position where it does not interfere with the support frame 2 when rotating. The second motor 29 is started, driving the turntable 10 to rotate 180 degrees, switching the positions of the two groups of workbenches 11, and the newly replaced composite material tooling continues to repeat the above steps for welding, and the welded composite material tooling is unloaded at the same time.

[0022] Working principle: In this embodiment, the laser welding head, the visual sensor 20 and the intelligent manipulator 19 are all mature technologies available on the market. The laser welding head uses high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses to the inside of the material through heat conduction, and the material is melted to form a specific molten pool to achieve the purpose of welding. The intelligent manipulator 19 includes a manipulator composed of multiple arms, a detector for analyzing the welding trajectory, a gas pipe for conveying protective gas, and a control device. The visual sensor 20 is used to identify the position of the composite material tooling. The position information combined with the set welding trajectory can be used by the intelligent manipulator 19 drives the laser welding head to perform welding operations. The power supply line, control line and protective gas delivery pipeline are all passed through the outer sleeve 16 and the inner sleeve 25 of the pipeline. Both groups of workbenches 11 are provided with tooling clamping plates 13. When one group is involved in the welding operation, the other group can be clamped or unloaded, which effectively improves the work efficiency. When the workbench 11 is not connected to the welding box 4, the first cylinder 6 extends and retracts the shaft, which can drive the turntable 10 to move forward and backward. When moving forward, the turntable 10 will not interfere with the support frame 2 when rotating. At the same time, the front group of the two groups of workbenches 11 is away from the welding box 4, which can facilitate the clamping of composite material tooling. During the fixing and disassembly operations, when the turntable 10 moves backward to the end of the rear stroke, a group of workbenches 11 located on the rear side are opposite to the welding box 4 up and down, which is convenient for the workbenches 11 to be combined with the welding box 4. When the workbenches 11 are not combined with the welding box 4 and the extension shaft of the first cylinder 6 is in the extended state, the rotation of the second motor 29 can drive the turntable 10 to rotate. The second motor 29 is a common reduction motor on the market, which has the characteristics of large torque. After the second motor 29 rotates 180 degrees, it can drive the two groups of workbenches 11 to switch their positions with each other. After the extension shaft of the first cylinder 6 is retracted, the extension shaft of the second cylinder 28 is extended and retracted to drive the turntable 10 to rise and fall, so as to realize the connection between the workbenches 11 and the welding box 4. The connection and separation between the connection boxes 4, four groups of laser welding heads can simultaneously weld the front, back, left and right sides of the composite material tooling. The support plate 18 can be raised and lowered by rotating the screw 23 through the first motor 22. After rising to the end of the upper stroke, the intelligent manipulator 19 can unfold multiple groups of arms to drive the laser welding head into the tooling to perform synchronous welding on the four sides of the tooling. All welds are clamped and welded at one time, which greatly improves the welding efficiency. During the welding operation, the air inside the welding box 4 is continuously sucked away through the exhaust pipe 14 by the exhaust fan 15, and sent to the common welding smoke treatment device on the market for smoke treatment to prevent the smoke from affecting the workshop environment.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient welding device for composite material tooling, characterized in that: The invention comprises a base (1) and four groups of laser welding heads. The upper wall of the base (1) and a position close to the rear wall are fixedly connected to a top frame (3) through a support frame (2). The lower wall of the top frame (3) and the front wall of the support frame (2) are fixedly connected to a welding box (4). The lower side of the welding box (4) is open. The inner front wall, the inner rear wall, the inner left wall and the inner right wall of the welding box (4) are slidably connected to a back plate (17) through two groups of slide rails (21). The back plate (17) is fixedly connected to a support plate (18) on a side facing the center of the welding box (4) and close to the lower wall. An intelligent manipulator (19) is arranged on the upper wall of the support plate (18). The four groups of laser welding heads are respectively arranged at one end of a group of intelligent manipulators (19) away from the support plate (18). A visual sensor (20) is fixedly connected to the inner upper wall of the box (4) and at a central position; the inner wall of the base (1) and located in front of the support frame (2) is slidably connected to a sliding seat (7) through two groups of sliding blocks (701); the inner left wall and the inner right wall of the base (1) are both provided with sliding grooves (101); the two groups of sliding blocks (701) are respectively slidably connected to the inner wall of a group of sliding grooves (101); the upper wall of the sliding seat (7) is fixedly connected to a fixed sleeve (8); the inner wall of the fixed sleeve (8) is slidably connected to a sliding sleeve (9); the upper wall of the sliding sleeve (9) is rotatably connected to a turntable (10); the upper wall of the turntable (10) is provided with two groups of workbenches (11) arranged in sequence in a front-to-back distribution; the outer dimensions of the workbenches (11) are adapted to the inner wall of the welding box (4).

2. The high-efficiency welding equipment for composite material tooling according to claim 1, characterized in that: A translation driving structure for driving the sliding seat (7) to move forward and backward is arranged between the base (1) and the fixed sleeve (8); a partition (27) is fixedly connected to the inner side wall of the sliding sleeve (9); a rotation driving structure for driving the turntable (10) to rotate is arranged between the partition (27) and the turntable (10); a first lifting driving structure for driving the turntable (10) to move up and down is arranged between the partition (27) and the sliding seat (7); a second lifting driving structure for driving the backplate (17) to move up and down to increase the welding range of the laser welding head is arranged between the welding box (4) and the backplate (17); and an exhaust structure for extracting smoke generated during welding is arranged on the top of the welding box (4).

3. The high-efficiency welding equipment for composite material tooling according to claim 2, characterized in that: The translation drive structure comprises a fixed plate (5) and a first cylinder (6); the fixed plate (5) is fixedly connected to the upper wall of the base (1) and is located inside the support frame (2); the fixed plate (5) is located on the upper wall of the base (1) and close to the rear wall; the first cylinder (6) is fixedly connected to the upper wall of the fixed plate (5); and the first cylinder (6) extends out of the shaft end portion and is fixedly connected to the rear wall of the fixed sleeve (8).

4. The high-efficiency welding equipment for composite material tooling according to claim 3, characterized in that: The rotary drive structure is a second motor (29), the second motor (29) is fixedly connected to the lower wall of the partition (27), the extension shaft of the second motor (29) passes through the inner wall of the partition (27) and extends above the partition (27), and the end of the extension shaft of the second motor (29) extending above the partition (27) is fixedly connected to the lower wall of the turntable (10).

5. The high-efficiency welding equipment for composite material tooling according to claim 4, characterized in that: The first lifting drive structure comprises two groups of second cylinders (28), the two groups of second cylinders (28) are both fixedly connected to the upper wall of the sliding seat (7) and are both located inside the fixed sleeve (8), and the protruding shaft ends of the two groups of second cylinders (28) are both fixedly connected to the lower wall of the partition (27).

6. The high-efficiency welding equipment for composite material tooling according to claim 5, characterized in that: The second lifting drive structure comprises a first motor (22), a screw rod (23), a rotating seat (24) and a connecting seat (26); the first motor (22) is fixedly connected to the inner wall of the welding box (4) and is located between the two sets of slide rails (21); the first motor (22) is located near the top of the welding box (4); the screw rod (23) is fixedly connected to the end of the shaft extending from the first motor (22); and the connecting seat (26) is fixedly connected to a side of the back plate (17) facing the center of the welding box (4). The rotating seat (24) is fixedly connected to the inner wall of the welding box (4) and is vertically opposite to the first motor (22); the end of the screw rod (23) away from the first motor (22) passes through the inner wall of the connecting seat (26), the inner wall of the support plate (18) and the inner wall of the rotating seat (24) in sequence; the screw rod (23) and the connecting seat (26) are threadedly connected, the screw rod (23) and the support plate (18) are slidably connected, and the screw rod (23) and the rotating seat (24) are rotationally connected.

7. The high-efficiency welding equipment for composite material tooling according to claim 6, characterized in that: The exhaust structure comprises an exhaust pipe (14) and an exhaust fan (15), wherein the exhaust fan (15) is fixedly connected to the top of the welding box (4), the exhaust pipe (14) is fixedly connected between the inlet end of the exhaust fan (15) and the upper wall of the welding box (4), and one end of the exhaust pipe (14) away from the exhaust fan (15) passes through the upper wall of the welding box (4) and is connected to the interior of the welding box (4).

8. The high-efficiency welding equipment for composite material tooling according to claim 7, characterized in that: The upper wall of the workbench (11) is provided with a tooling clamping plate (13), and the outer wall of the peripheral side of the workbench (11) is sleeved with a sealing gasket (12). When the workbench (11) and the welding box (4) are docked, the outer wall of the sealing gasket (12) is slidably connected to the inner wall of the welding box (4).

9. The high-efficiency welding equipment for composite material tooling according to claim 8, characterized in that: The outer wall of the welding box (4) is fixedly connected to a pipeline outer sleeve (16); one end of the pipeline outer sleeve (16) facing the welding box (4) penetrates the side wall of the welding box (4) and extends into the interior of the welding box (4); the end of the pipeline outer sleeve (16) extending into the interior of the welding box (4) is connected to the laser welding head via a pipeline inner sleeve (25).

10. The welding method of the high-efficiency welding equipment of composite material tooling according to claim 9, characterized in that: The method comprises the following steps: S1, clamping and loading materials, clamping and fixing the composite material tooling to be welded on a front set of upper walls of two sets of tooling clamping plates (13), after clamping is completed, the second motor (29) is started to rotate 180 degrees, driving the two sets of tooling clamping plates (13) to exchange positions, after the exchange of positions, the first cylinder (6) extends the shaft and retracts, driving the tooling clamping plates (13) holding the composite material tooling to move to the bottom of the welding box (4), and the second cylinder (28) extends the shaft and drives the turntable (10) to rise until the worktable (11) completely enters the inner wall of the welding box (4); S2, external welding operation, start the exhaust fan (15), continuously extract the air inside the welding box (4) to the outside through the exhaust pipe (14), identify the specific position of the composite material tooling through the visual sensor (20), and start four sets of intelligent manipulators (19) based on the identified position and the set welding program. The four sets of intelligent manipulators (19) respectively drive a set of laser welding heads to approach the four sides of the composite material tooling to weld the four outer walls of the composite material at the same time; S3, internal welding operation, when the external welding operation is completed, the first motor (22) is started to drive the screw (23) to rotate, and the back plate (17) and the support plate (18) are driven to move upward through the threaded connection relationship between the screw (23) and the connecting seat (26), and the four sets of intelligent manipulators (19) move upward to the end of the upper stroke and drive the laser welding head to extend from the upper opening of the tooling into the interior of the tooling to weld the interior of the composite material tooling; S4, material replacement. During the internal and external welding of the composite tooling, another set of composite tooling to be welded is clamped on a set of workbenches (11) located outside the welding box (4). After the internal and external welding of the composite tooling is completed, the second cylinder (28) extends the shaft and retracts, driving the turntable (10) to descend until the worktable (11) is completely separated from the welding box (4). The first cylinder (6) extends the shaft and drives the sliding seat (7) to move forward until the turntable (10) stops at a position where it does not interfere with the support frame (2) when rotating. The second motor (29) is started to drive the turntable (10) to rotate 180 degrees, switching the positions of the two sets of workbenches (11). The newly replaced composite tooling continues to repeat the above steps for welding, and the welded composite tooling is unloaded at the same time.

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