Welding device for aluminum plate reprocessing

Abstract

The invention discloses a welding device for aluminum plate reprocessing, which relates to the technical field of aluminum plate reprocessing and comprises a machine tool, a worktable mounted on the machine tool and an aluminum plate workpiece arranged on the upper surface of the worktable. The mobile monitoring vehicle is attached to the lower surface of the aluminum plate workpiece, can move along the welding seam and monitors whether the welding seam is penetrated or not in real time; the driving mechanism is arranged on one side of the mobile monitoring vehicle and can adjust the moving speed of the mobile monitoring vehicle according to the state of a welding seam, and the welding head is installed on the upper surface of the aluminum plate workpiece and can adjust the speed synchronously with the mobile monitoring vehicle. The moving speed is adjusted in real time according to the state of the weld joint, when the weld joint is completely fused, the movable monitoring vehicle and the welding head quickly move to the next welding point, otherwise, the output rotating speed is reduced until the weld joint is completely fused and then moves, and the welding head and the movable monitoring vehicle always move synchronously due to the arrangement of the double guide rods.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum plate reprocessing, in particular to a welding device for aluminum plate reprocessing. Background Art

[0002] Aluminum sheet reprocessing involves further processing preformed aluminum sheets through a series of processes to meet diverse application requirements. The steps typically vary depending on the raw material state, processing objectives, and application scenarios. During aluminum sheet reprocessing, two sheets often need to be joined together using welding equipment. Welding, as a key process in aluminum sheet reprocessing, directly impacts the strength, sealing, and appearance of the final product.

[0003] Common welding methods include TIG welding (tungsten inert gas welding), MIG welding (metal inert gas welding), laser welding and friction stir welding. Different welding devices are suitable for different types of aluminum plates. After welding, necessary post-processing is usually required, such as removing slag, grinding welds, and performing non-destructive testing to ensure that the welded joint meets the requirements of structural strength and use environment.

[0004] Currently, laser welding equipment is commonly used in the process of aluminum plate splicing and welding: laser welding machines can provide highly concentrated energy density, causing the metal surface to quickly heat up to the melting point, thereby achieving melting and bonding of the materials. This welding method can very precisely control the welding area, reduce the heat-affected zone, and does not require welding wire as a filler material.

[0005] However, aluminum's high thermal conductivity, susceptibility to oxidation, and high reflectivity make it difficult for laser energy to effectively absorb and penetrate the material. Excessive welding speeds or improper focus can easily lead to incomplete weld penetration. Failure to fully fuse or weld through the metal sheets can severely impact the strength, sealing, and durability of the welded joint. These incomplete weld areas can easily become stress concentration points, making them more susceptible to crack propagation under external forces, impacting the safety and service life of the overall structure.

[0006] At present, most factories use post-weld monitoring (such as X-ray, ultrasonic, and visual monitoring), which is a passive follow-up quality monitoring method and cannot perform real-time detection. If incomplete penetration is found during the subsequent inspection, repair work is usually required, which not only increases production costs but may also affect material properties due to multiple heating.

[0007] In view of the above problems, it is urgent to carry out innovative design based on the original welding device. Summary of the Invention

[0008] The technical solution of the present invention addresses the technical problem that the existing technical solutions are too simple, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a welding device for aluminum plate reprocessing to solve the problem raised in the above background technology that it is impossible to monitor in real time whether the weld is penetrated during welding.

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a welding device for aluminum plate reprocessing, comprising a machine tool, a workbench mounted on the machine tool, and an aluminum plate workpiece disposed on the upper surface of the workbench, further comprising a mobile monitoring vehicle attached to the lower surface of the aluminum plate workpiece, capable of moving along the weld and monitoring in real time whether the weld is fully penetrated, a drive mechanism disposed on one side of the mobile monitoring vehicle capable of adjusting the moving speed of the mobile monitoring vehicle according to the state of the weld, and a welding head mounted on the upper surface of the aluminum plate workpiece, capable of adjusting the speed synchronously with the mobile monitoring vehicle;

[0010] The workbench is provided with a guide mechanism for driving the welding head to move along the upper surface of the aluminum plate workpiece, and two sides of the workbench are slidably connected with a plurality of limit blocks.

[0011] Preferably, the mobile monitoring vehicle includes a protective shell and moving wheels provided on both sides of the protective shell. An electromagnet is installed inside the protective shell, and a coil is wound around the surface of the electromagnet.

[0012] Preferably, the two ends of the coil are electrically connected to the positive terminal and the negative terminal of the battery box, and a thermistor is connected between the coil and the negative terminal of the battery box. Two reels are provided under the battery box, and two wires are wound on the surface of the two reels respectively.

[0013] Preferably, the reel includes a wheel and a rotating shaft installed at the bottom of the wheel, and a spiral spring is installed at the lower middle position of the rotating shaft. One wire passes through the top of the wheel and is connected to the positive terminal of the battery box, and the other wire passes through the top of the wheel and is connected to the negative terminal of the battery box.

[0014] Preferably, the driving mechanism includes a servo motor, the output shaft of the servo motor is installed with a conical rotating column, the interior of the conical rotating column is plugged with a driving shaft, and the driving shaft passes through the electromagnet and is fixedly connected to the moving wheels on both sides of the protective shell.

[0015] Preferably, a conical gasket is slidably connected to the inner wall of one end of the drive shaft close to the conical rotating column, a return spring is installed on one side of the conical gasket, the conical gasket is located inside the conical rotating column, and the outer wall of the conical gasket and the inner wall of the conical rotating column are both installed with silicone convex strips.

[0016] Preferably, the guide mechanism includes two guide rods, one of which is arranged on one side of the mobile monitoring vehicle, and the other is arranged on one side of the welding head. Spiral grooves are provided on the surfaces of the two guide rods, and shift rods are inserted into the spiral grooves.

[0017] Preferably, the two guide rods are rotationally connected to the workbench via bearings, and a driving gear is installed at one end of each guide rod, and a driven gear is meshed between the two driving gears.

[0018] Preferably, a slide rail is installed on the upper surface of the workbench, and the surface of the slide rail is slidably connected to a pulley, a slider is installed at the bottom of the pulley, and the surface of the slider is rotatably connected to a screw rod, and one end of the screw rod passes through the slider and is threadedly connected to the welding head.

[0019] Preferably, a pressure rod is slidably connected to the interior of each of the limit blocks, a coil spring is sleeved on the exterior of the pressure rod, and the bottom of the pressure rod is attached to the upper surface of the aluminum plate workpiece.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The weld on the lower surface of the aluminum plate workpiece is monitored in real time by a mobile monitoring vehicle. A thermistor that can sense the temperature change of the weld is installed in the mobile monitoring vehicle. The thermistor is set on the lower surface of the sensing area, and the sensing area is aligned with the weld. The temperature of the weld position on the lower surface of the aluminum plate workpiece is sensed in real time by the thermistor, and the current of the entire circuit is adjusted, which further changes the magnetic force of the electromagnet to become smaller. The magnetic information is transmitted to the drive mechanism in real time, and the moving speed of the mobile monitoring vehicle and the welding head is adjusted in real time by the drive mechanism.

[0022] In addition, the drive shaft and the servo motor are connected through the conical rotating column and the conical gasket. The conical gasket slides along the conical rotating column under the magnetic force of the electromagnet. When the conical gasket is in different positions, the friction between it and the conical rotating column is different. The greater the friction, the higher the transmitted torque, the more stable the rotation of the drive shaft, the smaller the friction, the output speed is reduced or even stopped, and the transmission ratio is adjusted. It is adjusted in real time according to the status of the weld. When the weld is fully melted, the magnetic force of the electromagnet increases, and the conical gasket is attracted to move toward the narrow side of the conical rotating column. The speed of the drive shaft and the moving wheel is accelerated, driving the mobile monitoring vehicle and the welding head to quickly move to the next welding point. On the contrary, when the weld is not fully melted, the reset spring pulls the conical gasket toward the wide side of the conical rotating column, and the output speed is reduced, causing the mobile monitoring vehicle and the welding head to move slowly until the weld is completely melted.

[0023] Moreover, in the present invention, synchronous transfer of the welding head and the mobile monitoring vehicle is achieved through the guidance of the guide mechanism. A double guide rod setting is adopted, and the synchronous rotation of the gears ensures that the displacement of the levers on both sides is consistent, further ensuring the synchronous displacement of the welding head and the mobile monitoring vehicle, so that the welding head always slides along the upper surface of the weld, and the mobile monitoring vehicle always moves along the lower surface of the weld. At the same time, it ensures that the position deviation of the welding head and the mobile monitoring vehicle is not too large, thereby avoiding the situation where the welding head is offset and causes welding leaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the connection structure between the mobile monitoring vehicle and the aluminum plate workpiece of the present invention.

[0026] Figure 3 It is a schematic diagram of the guide mechanism structure of the present invention.

[0027] Figure 4 This is a structural diagram of the mobile monitoring vehicle and welding head of the present invention.

[0028] Figure 5 This is a schematic diagram of the internal structure of the mobile monitoring vehicle of the present invention.

[0029] Figure 6 This is a schematic diagram of the cross-sectional structure of the tapered rotating column and the drive shaft of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of the tapered rotating column and tapered gasket after being separated.

[0031] Figure 8 This is a schematic diagram of the decomposed structure of the wire wheel of the present invention.

[0032] Figure 9 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0033] Figure 10 For the present invention Figure 3 Enlarged structural diagram at point B in the middle.

[0034] In the figure: 1. Machine tool; 2. Workbench; 201. Slide rail; 202. Pulley; 203. Slider; 204. Screw; 3. Aluminum plate workpiece; 4. Mobile monitoring vehicle; 401. Protective housing; 402. Moving wheel; 403. Electromagnet; 404. Coil; 405. Battery box; 406. Thermistor; 407. Wire; 408. Wheel; 409. Rotating shaft; 4010. Volute spring; 5. Driving mechanism; 501. Servo motor; 502. Conical rotating column; 503. Driving shaft; 504. Conical gasket; 505. Return spring; 506. Silicone ridge; 6. Welding head; 7. Guide mechanism; 701. Guide rod; 702. Spiral groove; 703. Push rod; 704. Driving gear; 705. Driven gear; 8. Limit block; 801. Pressure rod; 802. Spiral spring. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1 to 10 The present invention provides a technical solution: a welding device for aluminum plate reprocessing, comprising a machine tool 1, a workbench 2 mounted on the machine tool 1, and an aluminum plate workpiece 3 disposed on the upper surface of the workbench 2, further comprising a mobile monitoring vehicle 4 attached to the lower surface of the aluminum plate workpiece 3, capable of moving along the weld and monitoring in real time whether the weld is fully penetrated, a driving mechanism 5 disposed on one side of the mobile monitoring vehicle 4, capable of adjusting the moving speed of the mobile monitoring vehicle 4 according to the state of the weld, and a welding head 6 mounted on the upper surface of the aluminum plate workpiece 3, capable of adjusting the speed synchronously with the mobile monitoring vehicle 4;

[0037] A guide mechanism 7 is installed on the workbench 2 to drive the welding head 6 to move along the upper surface of the aluminum plate workpiece 3. A plurality of limit blocks 8 are slidably connected to both sides of the workbench 2.

[0038] The weld seam on the lower surface of the aluminum plate workpiece 3 is monitored in real time by the mobile monitoring vehicle 4, the status of the weld seam is monitored in real time, and the information is transmitted to the driving mechanism 5. The driving mechanism 5 adjusts the position of the mobile monitoring vehicle 4 in time according to the weld seam status. If the weld seam is not fully melted, the speed of the mobile monitoring vehicle 4 is adjusted to slow it down, and then the moving speed of the welding head 6 is reduced synchronously. Once it is detected that the weld seam is fully melted, the welding head 6 on the mobile monitoring vehicle 4 is immediately controlled to move quickly to the next welding point to prevent excessive welding and avoid affecting the material around the weld seam.

[0039] Under the guidance of the guide mechanism 7, the welding head 6 and the mobile monitoring vehicle 4 are transferred synchronously, ensuring that the welding head 6 slides along the upper surface of the weld and the mobile monitoring vehicle 4 moves with the lower surface of the weld. At the same time, it is ensured that the position deviation between the welding head 6 and the mobile monitoring vehicle 4 is not too large, avoiding the situation where the welding head 6 deviates and causes welding leaks.

[0040] In this embodiment, if Figure 4 and Figure 5 As shown, the mobile monitoring vehicle 4 includes a protective shell 401 and moving wheels 402 arranged on both sides of the protective shell 401 . An electromagnet 403 is installed inside the protective shell 401 , and a coil 404 is wound around the surface of the electromagnet 403 .

[0041] It should be noted that the protective shell 401 is made of high-temperature resistant ceramic material. Even if it contacts the lower surface of the aluminum plate workpiece 3, it will not be affected by the temperature of the welding head 6, isolating the high temperature at the weld and preventing the internal electromagnet 403 and coil 404 from being affected by the high temperature at the weld. An opening is provided on one side of the protective shell 401, which is used to connect the drive mechanism 5 on the one hand and to dissipate heat on the other hand. The moving wheels 402 are respectively attached to the lower surface of the aluminum plate workpiece 3 and the upper surface of the workbench 2. When the moving wheels 402 rotate, friction is generated on the contact surface, which further drives the entire mobile monitoring vehicle 4 to move along the weld to monitor the status of the weld in real time.

[0042] In this embodiment, if Figure 4 and Figure 5 As shown, the two ends of the coil 404 are electrically connected to the positive terminal and the negative terminal of the battery box 405, and a thermistor 406 is connected between the coil 404 and the negative terminal of the battery box 405. Two reels are provided under the battery box 405, and two wires 407 are wound on the surface of the two reels respectively.

[0043] It should be noted that the two wires 407 are distributed in a spiral winding manner on the surface of the wheel 408, and the wheel 408 rotates to achieve the work of winding and releasing the wires. When the mobile monitoring vehicle 4 moves away, the wheel 408 releases the wires, so that the thermistor 406 always maintains an electrical connection with the battery box 405.

[0044] In this embodiment, the thermistor 406 uses a negative temperature coefficient thermistor 406. The higher the temperature, the smaller the resistance. The thermistor 406 is attached to the inner wall of the protective shell 401, and the sensing area is marked on the top of the protective shell 401. The thermistor 406 is arranged on the lower surface of the sensing area, and the sensing area is aligned with the weld. The temperature of the weld position on the lower surface of the aluminum plate workpiece 3 is sensed in real time by the thermistor 406 to further adjust the current of the entire circuit.

[0045] Specifically, once the temperature is high, it means that the weld has been melted through. At this time, the thermistor 406 senses the high temperature, the resistance value becomes smaller, the current passing through the coil 404 area becomes larger, and the magnetic force of the electromagnet 403 increases. On the contrary, if the weld is not melted through, the temperature is not that high. At this time, the current passing through the coil 404 area becomes smaller, the magnetic force of the electromagnet 403 becomes smaller, and the magnetic information is transmitted to the drive mechanism 5 in real time, and the driving mechanism 5 adjusts the moving speed of the mobile monitoring vehicle 4 and the welding head 6 in real time.

[0046] In this embodiment, if Figure 8 As shown, the reel includes a wheel 408 and a rotating shaft 409 installed at the bottom of the wheel 408. A spiral spring 4010 is installed at the lower middle position of the rotating shaft 409. One of the wires 407 passes through the top of the wheel 408 and is plugged into the positive terminal of the battery box 405. The other wire 407 passes through the top of the wheel 408 and is plugged into the negative terminal of the battery box 405.

[0047] It should be noted that the rotating shaft 409 and the wheel 408 rotate together. The process of the wheel 408 rotating to pay out or reel in the line drives the rotating shaft 409 and the spiral spring 4010 at the bottom to rotate at the same time. The setting of the spiral spring 4010 enables a certain rebound force to be generated during the process of the wheel 408 paying out or reeling in the line. During the back and forth movement of the mobile monitoring vehicle 4, the stable release and retraction of the wire 407 is ensured, and it is not easy to get entangled or loose, which further enhances the stability and reliability of the entire device.

[0048] In this embodiment, if Figure 6 and Figure 7 As shown, the driving mechanism 5 includes a servo motor 501, the output shaft of the servo motor 501 is installed with a conical rotating column 502, the interior of the conical rotating column 502 is plugged into the driving shaft 503, and the driving shaft 503 passes through the electromagnet 403 and is fixedly connected to the moving wheels 402 on both sides of the protective shell 401.

[0049] A conical gasket 504 is slidably connected to the inner wall of one end of the driving shaft 503 close to the conical rotating column 502, and a return spring 505 is installed on one side of the conical gasket 504. The conical gasket 504 is located inside the conical rotating column 502, and the outer wall of the conical gasket 504 and the inner wall of the conical rotating column 502 are both installed with silicone ridges 506.

[0050] It should be noted that a cavity is provided inside the conical rotating column 502, and the conical rotating column 502 is connected to the output shaft of the servo motor 501 and rotates synchronously with the output shaft of the servo motor 501. The end of the drive shaft 503 and the conical gasket 504 are both arranged in the cavity of the conical rotating column 502. By changing the position of the conical gasket 504, the outer wall of the conical gasket 504 and the inner wall of the conical rotating column 502 are both installed with silicone ridges 506. After the fitting surfaces of the two are in contact, the silicone ridges 506 are used to increase the friction between them and the conical gasket 504. When the conical gasket 504 is driven to rotate due to the friction, the drive shaft 503 and the moving wheel 402 also rotate accordingly.

[0051] In addition, in this embodiment, the driving shaft 503 and the moving wheel 402 are made of high-temperature resistant ceramic materials, which will neither be magnetized nor melted by the high temperature at the weld. The surface of the moving wheel 402 is relatively rough. After contacting the aluminum plate workpiece 3, the rotation will generate a certain friction force, driving the entire mobile monitoring vehicle 4 to move along the weld.

[0052] In addition, the conical washer 504 is made of carbon-iron alloy, which can be attracted by the electromagnet 403 and is not easily assimilated. The friction between the conical washer 504 and the conical rotating column 502 varies depending on the position of the conical washer 504. When the friction changes, the transmission ratio changes. The greater the friction, the higher the torque transmitted, the more stable the rotation of the drive shaft 503, the smaller the friction, and the output speed decreases or even stops. In this way, the transmission ratio can be adjusted, and the following functions can be realized:

[0053] When the weld has been fully melted, the resistance of thermistor 406 decreases and the current increases, the magnetic force of electromagnet 403 increases, and the conical gasket 504 is attracted to move toward the narrow side of conical rotating column 502. The contact area between conical rotating column 502 and conical gasket 504 increases, the friction force increases, the torque transmitted is higher, the rotation speed of driving shaft 503 and moving wheel 402 increases, and the mobile monitoring vehicle 4 and welding head 6 quickly move to the next welding point.

[0054] When the weld is not fully melted, the resistance of the thermistor 406 increases, the current decreases, the magnetic force of the electromagnet 403 decreases, and the reset spring 505 pulls the conical gasket 504 toward the wide surface of the conical rotating column 502. The gap between the contact surface of the conical rotating column 502 and the conical gasket 504 decreases, the friction force decreases, and the output speed decreases, causing the mobile monitoring vehicle 4 and the welding head 6 to move slowly until the weld is fully melted.

[0055] In this embodiment, if Figure 3 and Figure 10As shown, the guide mechanism 7 includes two guide rods 701, one of which is arranged on one side of the mobile monitoring vehicle 4, and the other is arranged on one side of the welding head 6. The surfaces of the two guide rods 701 are both provided with spiral grooves 702, and a shift rod 703 is inserted into the spiral grooves 702.

[0056] The two guide rods 701 are rotationally connected to the workbench 2 via bearings, and a driving gear 704 is installed at one end of each of the two guide rods 701 , and a driven gear 705 is meshed between the two driving gears 704 .

[0057] It should be noted that the spiral shapes of the spiral grooves 702 on the surfaces of the two guide rods 701 are consistent. The lever 703 in the spiral groove 702 on the surface of the guide rod 701 on one side of the mobile monitoring vehicle 4 is connected to the mobile monitoring vehicle 4. The mobile monitoring vehicle 4 is used as a driving force to drive the lever 703 to axially displace, and the guide rod 701 is rotated, while driving one of the driving gears 704 to rotate. The engagement of the driven gear 705 ensures that the two driving gears 704 rotate in the same direction, further mobilizing the other guide rod 701 to rotate. Every time the guide rod 701 rotates one circle, the shaft rod is also displaced. The shaft rod is connected to the welding head 6, further driving the welding head 6 to move.

[0058] In this example, a double guide rod 701 is used, and the gears rotate synchronously to ensure that the shifting rods 703 on both sides move in unison, further ensuring that the welding head 6 and the mobile monitoring vehicle 4 move synchronously.

[0059] In this embodiment, if Figure 1 and Figure 4 As shown, a slide rail 201 is installed on the upper surface of the workbench 2, and the surface of the slide rail 201 is slidably connected to a pulley 202, a slider 203 is installed at the bottom of the pulley 202, and the surface of the slider 203 is rotatably connected to a screw rod 204, and one end of the screw rod 204 passes through the slider 203 and is threadedly connected to the welding head 6.

[0060] It should be noted that the cooperation between the pulley 202 and the slide rail 201 makes the movement of the slider 203 and the welding head 6 smoother to prevent jamming. The slider 203 and the welding head 6 are connected to the limit rod through the screw rod 204. When the screw rod 204 is rotated, the welding head 6 can be vertically displaced under the action of the limit rod. The height of the welding head 6 can be flexibly adjusted according to the different thicknesses of the aluminum plate, thereby increasing the flexibility of the welding device.

[0061] In this embodiment, if Figure 1 and Figure 9 As shown, a pressure rod 801 is slidably connected to the interior of each limit block 8 , a coil spring 802 is sleeved on the exterior of the pressure rod 801 , and the bottom of the pressure rod 801 is attached to the upper surface of the aluminum plate workpiece 3 .

[0062] It should be noted that an opening is provided on the side of the limit block 8, into which the aluminum plate workpiece 3 can be inserted. When the lower surface of the aluminum plate workpiece 3 is attached to the opening on the side of the limit block 8, the lower surface of the aluminum plate workpiece 3 is also in contact with the moving wheel 402 at the same time. Several limit blocks 8 slide along the edge of the workbench 2, and through the elastic force of the coil spring 802, they press against the pressure rod 801, so that the lower surface of the pressure rod 801 is close to the upper surface of the aluminum plate workpiece 3. The aluminum plate workpiece 3 is supported and limited by the limit block 8 to prevent displacement during the welding process.

[0063] Working principle: When using the aluminum plate reprocessing welding device, first place the aluminum plate workpiece 3 to be welded on the workbench 2, clamp the edge of the aluminum plate workpiece 3 with the limit block 8 to limit its position. During installation, the weld needs to be moved to the detection area on the surface of the monitoring vehicle 4 so that the thermistor 406 inside it can sense the temperature at the weld.

[0064] Next, adjust the height of the welding head 6 and rotate the screw rod 204. If the screw rod 204 is rotated clockwise, the welding head 6 moves down, and vice versa, the welding head 6 moves up. Adjust the position of the welding head 6 until the welding head 6 contacts the surface of the aluminum plate workpiece 3. Start the switch of the machine tool 1 and adjust the welding head 6 to start working. The specific operation scheme belongs to the well-known technology in this field.

[0065] At the same time, the servo motor 501 is started, and the servo motor 501 starts to drive the conical rotating column 502 to rotate. Friction is generated between the conical rotating column 502 and the conical gasket 504, which further drives the drive shaft 503 and the moving wheel 402 to start rotating. The mobile monitoring vehicle 4 starts to move along the lower surface of the aluminum plate workpiece 3. As the mobile monitoring vehicle 4 moves, the thermistor 406 inside the mobile monitoring vehicle 4 starts to detect the temperature. The thermistor 406 senses the temperature at the weld seam and adjusts the position of the mobile monitoring vehicle 4 in real time.

[0066] Specifically, when the weld has been fully melted, the resistance of the thermistor 406 becomes smaller, the current flowing through the coil 404 and the wire 407 becomes larger, the magnetic force of the electromagnet 403 increases, and the magnetic force attracts the conical gasket 504, causing the conical gasket 504 to move toward the narrow side of the conical rotating column 502, the return spring 505 is stretched, the contact area between the conical rotating column 502 and the conical gasket 504 increases, the friction force increases, and the mobile monitoring vehicle 4 drives the lever 703 to move axially at a faster speed, further driving the guide rod 701 on the side to rotate faster, and through the meshing transmission of the driving gear 704 and the driven gear 705, the rotation speed of the other guide rod 701 is driven to change at the same time, so that the moving speed of the welding head 6 on the upper surface of the aluminum plate workpiece 3 is consistent with that of the mobile monitoring vehicle 4, and it moves forward quickly at the same time;

[0067] On the contrary, when the weld is not fully melted, the resistance of the thermistor 406 increases, the current flowing through the coil 404 and the wire 407 decreases, the magnetic force of the electromagnet 403 decreases, and the elastic force of the return spring 505 is greater than the magnetic force, pulling the conical gasket 504 toward the wide surface of the conical rotating column 502. At this time, the gap between the contact surface of the conical rotating column 502 and the conical gasket 504 decreases, the friction force decreases, and the output speed decreases, causing the moving speed of the mobile monitoring vehicle 4 to slow down. The transmission is transmitted through the guide rod 701 and the driving gear 704, causing the moving speed of the upper welding head 6 to slow down at the same time until the weld is fully melted.

[0068] Furthermore, during the movement of the mobile monitoring vehicle 4, the two wires 407 are pulled, and the wheel 408 rotates during the pay-off process, driving the rotating shaft 409 and the scroll spring 4010 at the bottom to rotate simultaneously;

[0069] Finally, when the welding of the first group of aluminum plate workpieces 3 is completed, the servo motor 501 is controlled to reverse, driving the entire mobile probe vehicle to reset, and at the same time, the welding head 6 is synchronously reset through the transmission of the guide rod 701 and the driving gear 704. The second group of aluminum plate workpieces 3 are welded during the reset process. At this time, under the elastic force of the vortex spring 4010, the wire 407 can be rewound while the mobile probe vehicle is reset to avoid the wire 407 from being entangled. Until the welding of the second group of aluminum plate workpieces 3 is completed, a new round of welding can be carried out.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A welding device for aluminum plate reprocessing, comprising a machine tool (1), a workbench (2) mounted on the machine tool (1), and an aluminum plate workpiece (3) disposed on the upper surface of the workbench (2), characterized in that: The device also includes a mobile monitoring vehicle (4) attached to the lower surface of the aluminum plate workpiece (3) and capable of moving along the weld and monitoring in real time whether the weld is fully melted, a driving mechanism (5) provided on one side of the mobile monitoring vehicle (4) and capable of adjusting the moving speed of the mobile monitoring vehicle (4) according to the state of the weld, and a welding head (6) installed on the upper surface of the aluminum plate workpiece (3) and capable of adjusting the speed synchronously with the mobile monitoring vehicle (4); A guide mechanism (7) for driving the welding head (6) to move along the upper surface of the aluminum plate workpiece (3) is installed on the workbench (2), and a plurality of limit blocks (8) are slidably connected to both sides of the workbench (2).

2. The welding device for aluminum plate reprocessing according to claim 1, characterized in that: The mobile monitoring vehicle (4) comprises a protective shell (401) and moving wheels (402) arranged on both sides of the protective shell (401); an electromagnet (403) is installed inside the protective shell (401); and a coil (404) is wound around the surface of the electromagnet (403).

3. The welding device for aluminum plate reprocessing according to claim 2, characterized in that: The two ends of the coil (404) are electrically connected to the positive terminal and the negative terminal of the battery box (405), and a thermistor (406) is connected between the coil (404) and the negative terminal of the battery box (405). Two reels are provided below the battery box (405), and two wires (407) are wound around the surfaces of the two reels.

4. The welding device for aluminum plate reprocessing according to claim 3, characterized in that: The reel includes a wheel (408) and a rotating shaft (409) installed at the bottom of the wheel (408). A spiral spring (4010) is installed at the lower middle portion of the rotating shaft (409). One wire (407) passes through the top of the wheel (408) and is plugged into the positive terminal of the battery box (405). Another wire (407) passes through the top of the wheel (408) and is plugged into the negative terminal of the battery box (405).

5. The welding device for aluminum plate reprocessing according to claim 2, characterized in that: The driving mechanism (5) comprises a servo motor (501), the output shaft of the servo motor (501) is equipped with a conical rotating column (502), the interior of the conical rotating column (502) is plugged with a driving shaft (503), and the driving shaft (503) passes through the electromagnet (403) and is fixedly connected to the moving wheels (402) on both sides of the protective shell (401).

6. The welding device for aluminum plate reprocessing according to claim 5, characterized in that: A conical gasket (504) is slidably connected to the inner wall of one end of the driving shaft (503) close to the conical rotating column (502), and a return spring (505) is installed on one side of the conical gasket (504). The conical gasket (504) is located inside the conical rotating column (502), and the outer wall of the conical gasket (504) and the inner wall of the conical rotating column (502) are both installed with silicone convex strips (506).

7. The welding device for aluminum plate reprocessing according to claim 1, characterized in that: The guide mechanism (7) comprises two guide rods (701), one of which is arranged on one side of the mobile monitoring vehicle (4), and the other is arranged on one side of the welding head (6). The surfaces of the two guide rods (701) are both provided with spiral grooves (702), and a shifting rod (703) is inserted into the spiral grooves (702).

8. The welding device for aluminum plate reprocessing according to claim 7, characterized in that: The two guide rods (701) and the workbench (2) are connected in a rotational manner via bearings, and a driving gear (704) is installed at one end of each of the two guide rods (701), and a driven gear (705) is meshed between the two driving gears (704).

9. The welding device for aluminum plate reprocessing according to claim 1, characterized in that: A slide rail (201) is installed on the upper surface of the workbench (2), and the surface of the slide rail (201) is slidably connected to a pulley (202), a slider (203) is installed at the bottom of the pulley (202), and a screw rod (204) is rotatably connected to the surface of the slider (203), and one end of the screw rod (204) passes through the slider (203) and is threadedly connected to the welding head (6).

10. The welding device for aluminum plate reprocessing according to claim 1, characterized in that: The interior of each of the limit blocks (8) is slidably connected to a pressure rod (801), the exterior of the pressure rod (801) is sleeved with a coil spring (802), and the bottom of the pressure rod (801) is attached to the upper surface of the aluminum plate workpiece (3).

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