Dual-beam synergic three-dimensional laser cutting and welding composite device

Abstract

This invention discloses a dual-beam collaborative three-dimensional laser cutting and welding composite device, relating to the field of laser welding technology. It includes a rotating plate with a mounting base at its bottom. A rotating ball is rotatably connected within the mounting base. A laser emitting module is disposed at the bottom of the rotating ball. An electromagnetic telescopic rod is disposed inside the rotating plate, with a conical block at its end. A conical groove is formed at the top of the connecting block. A protective component is fitted around the laser emitting module. In the event of a collision, the electromagnetic telescopic rod retracts, causing the conical block to disengage from the conical groove, allowing the rotating ball and laser emitting module to deflect freely. The advantages of this invention are: when a collision occurs, the electromagnetic telescopic rod retracts and the rotating ball deflects freely, further buffering the impact force and effectively solving the problems of easy collision and damage to the laser emitting component in existing technologies, which also affect the dual-beam collaborative effect.

Description

Technical Field

[0001] This invention relates to the field of laser welding technology, and in particular to a dual-beam collaborative three-dimensional laser cutting and welding composite device. Background Technology

[0002] In existing technologies, dual-beam collaborative three-dimensional laser cutting and welding composite devices typically use two independently controllable laser beams, along with a multi-axis motion mechanism or robot system, to achieve laser cutting and laser welding of workpieces in three-dimensional space. The two laser beams can act on the workpiece surface separately or collaboratively according to processing requirements. By adjusting the laser power, focal position, and relative position of the beams, the cutting, melting, and welding of materials can be completed.

[0003] However, in the actual use of the above-mentioned dual-beam collaborative three-dimensional laser cutting and welding, the laser emitter is prone to collision during movement and processing. On the one hand, since such devices usually adopt a multi-axis linkage method, the laser emitter swings, tilts, or moves close to the workpiece surface at large angles in three-dimensional space, resulting in a complex processing path and a large range of movement. On the other hand, the dual-beam structure often increases the size of the laser emitter assembly and causes the front end structure to protrude. When processing near the edge, flange, or complex curved surface area of ​​the workpiece, it is easy to accidentally come into contact with the workpiece or fixture due to factors such as workpiece clamping error, processing deformation, welding spatter residue, or path deviation, thereby causing a collision.

[0004] If the laser emitter collides, it may cause displacement, damage or skew of the focusing lens, the light outlet or related optical components, which may change the position of the laser focus, resulting in incomplete cutting, unstable welding or reduced weld quality. For dual-beam collaborative systems, the above-mentioned collision may also disrupt the pre-set relative positional relationship and coaxiality between the two laser beams, making it impossible for the two laser beams to act stably on the same processing area, thereby weakening or even losing the process effects such as dual-beam collaborative preheating, stabilizing the molten pool or deep melting processing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dual-beam collaborative three-dimensional laser cutting and welding composite device, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A dual-beam collaborative three-dimensional laser cutting and welding composite device includes an operating table and a laser emitting module. The laser emitting module is equipped with at least two laser heads and also includes: A three-dimensional moving component is provided, which is set on the top of the operating table. A rotating component is provided on the three-dimensional moving component, and a rotating plate is installed on the rotating component. The rotating plate is equipped with a mounting base at its bottom. The mounting base has a spherical groove inside, and a rotating ball is rotatably connected inside the spherical groove. The laser emitting module is located at the bottom of the rotating ball. The mounting base has a sliding groove on its top, and the rotating ball has a docking block on its top. The docking block is located in the sliding groove and can rotate freely relative to the sliding groove. The rotating plate is equipped with an electromagnetic telescopic rod, and the end of the electromagnetic telescopic rod is equipped with a conical block. The top of the docking block is provided with a conical groove that mates with the conical block. The bottom outer side of the laser emitting module is fitted with a protective component. When a collision occurs, the electromagnetic telescopic rod retracts, causing the conical block to disengage from the conical groove, thereby allowing the rotating ball and the laser emitting module to deflect freely. At the same time, the laser head is controlled to stop emitting laser light. The electromagnetic telescopic rod and the laser emitting module are electrically connected to the control system of the device via wires.

[0007] Furthermore, several reset springs are provided between the side of the docking block and the inner wall of the groove to apply a reset effect to the docking block in a non-collision state.

[0008] Furthermore, the electromagnetic telescopic rod is connected to the rotating plate via a tension spring, and the electromagnetic telescopic rod is electrically connected to the control system. When energized, it pushes the conical block into the conical groove to restrict the rotation of the rotating ball. When the power is off or the control signal changes, the rebound force of the tension spring causes the conical block to retract to release the rotation restriction.

[0009] Furthermore, the protective assembly includes a collision shell, a cover plate, and a fixing member. The collision shell and the cover plate are detachably connected by a snap-fit. A plurality of support springs are provided on the bottom plate inside the collision shell, and the tops of the support springs are all connected to the fixing member. The collision shell and the cover plate are provided with clearance openings for the laser emitting module to pass through. The size of the clearance openings is larger than the outer dimensions of the laser emitting module to form an movable gap between the collision shell or cover plate and the laser emitting module. The fixing member is provided with a mounting rod on its top, and the end of the mounting rod extends to the outside of the collision shell. A screw is inserted into the mounting rod, and the fixing member is connected to the laser emitting module through the screw.

[0010] Furthermore, a main circuit module is provided on the top of the fixing component, and an auxiliary circuit module is provided on the bottom of the cover plate. The main circuit module and the auxiliary circuit module are arranged opposite to each other, and at least three electric contact balls are clamped between them. The main circuit module is electrically connected to the control system.

[0011] Furthermore, the electric contact ball is used to form an electrical connection between the main circuit module and the auxiliary circuit module. The main circuit module is provided with a plurality of magnetic pillars for attracting the electric contact ball. The electric contact ball is magnetically conductive, so that under normal conditions, the electric contact ball is simultaneously connected to the main circuit module and the auxiliary circuit module under magnetic attraction. When a collision occurs and a relative displacement occurs between the main circuit module and the auxiliary circuit module, the relative displacement overcomes the magnetic attraction force of the magnetic pillars, causing the electric contact ball to detach from the auxiliary circuit module, thereby breaking the electrical circuit between the main circuit module and the auxiliary circuit module and generating a change in electrical signal.

[0012] Furthermore, the inner wall of the collision shell is provided with a plurality of supporting arc blocks, and the outer side of the fixing member is provided with a plurality of arc-shaped blocks that abut against the supporting arc blocks. The supporting arc blocks and the arc-shaped blocks are used to guide and restrict the displacement direction of the fixing member when a collision occurs.

[0013] Furthermore, the supporting arc block and the arc-shaped block are respectively provided with mutually attractive magnetic blocks inside, so that the main circuit module and the auxiliary circuit module maintain a stable relative position under normal processing or when the laser head vibrates, so as to prevent false triggering caused by vibration. When the laser emitting module is subjected to external collision and the relative displacement between the main circuit module and the auxiliary circuit module exceeds the attraction and holding force of the magnetic block, the circuit state between the main circuit module and the auxiliary circuit module changes.

[0014] Compared with existing technologies, the advantages of this invention are: 1. This invention sets up a protective component and a rotating ball deflection protection structure. When a collision occurs, the support spring of the protective component can initially buffer the impact force. At the same time, the collision detection mechanism quickly triggers a signal to retract the electromagnetic telescopic rod and allow the rotating ball to deflect freely, further buffering the impact force and preventing damage to the laser emission module, laser head and optical components. This effectively solves the problems in the prior art where laser emission components are prone to collisions, easily damaged after collisions, and affect the dual-beam synergy effect.

[0015] 2: This invention uses magnetic blocks to attract and support arc blocks and arc-shaped blocks, and magnetic columns to attract electric contact balls, which can effectively counteract the force generated by the vibration of the laser head during normal processing, prevent the collision detection mechanism from being triggered erroneously, and ensure the continuity and stability of dual-beam collaborative processing.

[0016] 3: The present invention features an automatically aligned conical block, which avoids the problem of the conical block failing to insert into the conical groove or the rotating ball failing to lock due to slight offset. It eliminates the need for precise manual calibration, improves the device's reset efficiency, and ensures the attitude accuracy of the laser emission module after locking, thus guaranteeing the dual-beam collaborative processing effect. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the structure of a dual-beam collaborative three-dimensional laser cutting and welding composite device proposed in this invention; Figure 2 for Figure 1 Schematic diagram of the rotating plate in the middle; Figure 3 for Figure 2 Top view; Figure 4 for Figure 3 A cross-sectional view along the AA direction; Figure 5 for Figure 4 Schematic diagram of the structure of a rotating sphere; Figure 6 for Figure 5 Top view; Figure 7 for Figure 6 Cross-sectional view along the BB direction; Figure 8 for Figure 7 Another structural diagram from another perspective; Figure 9 for Figure 8 Enlarged structural diagram at point C; Figure 10 for Figure 9 A schematic diagram of the explosion structure inside the impact shell.

[0018] In the diagram: 1. Operating platform; 2. Three-dimensional moving component; 3. Rotating assembly; 4. Rotating plate; 41. Mounting base; 42. Spherical groove; 43. Rotating ball; 44. Connecting block; 45. Slide groove; 46. Return spring; 5. Conical groove; 51. Conical block; 52. Electromagnetic telescopic rod; 53. Tension spring; 6. Laser emitting module; 61. Laser head; 7. Collision shell; 71. Cover plate; 72. Support spring; 73. Fixing component; 74. Main circuit module; 75. Auxiliary circuit module; 76. Electric contact ball; 761. Magnetic column; 77. Supporting arc block; 78. Arc block; 79. Magnetic block; 8. Mounting rod; 81. Screw. Detailed Implementation

[0019] Reference Figures 1-10A dual-beam collaborative three-dimensional laser cutting and welding composite device includes an operating table 1 and a laser emitting module 6. The laser emitting module 6 is equipped with at least two laser heads 61, and the power, focus position and emission sequence of the two laser heads 61 can be adjusted independently. It can realize various working modes such as collaborative preheating, synchronous cutting and welding and alternating processing according to processing requirements. The device also includes a three-dimensional moving component 2, which is set on the top of the operating table 1. The three-dimensional moving component 2 adopts a linear module combination structure, which can realize precise linear movement in the X, Y and Z directions. With the help of servo motor drive and real-time feedback from position sensors, it ensures smooth movement and accurate positioning. A rotating component 3 is set on the three-dimensional moving component 2, and a rotating plate 4 is installed on the rotating component 3. The rotating component 3 can rotate 360°, driving the rotating plate 4 and the laser emitting module 6 below to realize circumferential angle adjustment. The two work together to provide a basis for the laser emitting module 6 to move and adjust in all space. A mounting base 41 is installed at the bottom of the rotating plate 4. A spherical groove 42 is opened inside the mounting base 41. A rotating ball 43 is rotatably connected inside the spherical groove 42. The laser emitting module 6 and the rotating ball 43 are fixedly connected by bolts. The connection is firm and easy to disassemble and maintain later. The rotating ball 43 can be flexibly deflected in any direction within the spherical groove 42 to meet the multi-angle tilting processing requirements of the laser emitting module 6. The mounting base 41 has a groove 45 on its top, and the rotating ball 43 has a docking block 44 on its top. The docking block 44 is located in the groove 45 and can rotate freely relative to the groove 45. The groove 45 on the top of the mounting base 41 is a circular groove. The docking block 44 on the top of the rotating ball 43 is adapted to be embedded in the circular groove, and the docking block 44 can rotate freely relative to the groove 45. The rotation angle of the docking block 44 is limited and it cannot rotate arbitrarily without dead angles. This can meet the multi-angle deflection adjustment requirements of the laser emitting module 6, and also avoid excessive rotation of the docking block 44, which could cause damage to the reset spring 46 and displacement of the rotating ball 43, thus ensuring structural stability. An electromagnetic telescopic rod 52 is installed inside the rotating plate 4. A conical block 51 is installed at the end of the electromagnetic telescopic rod 52. A conical groove 5 that mates with the conical block 51 is opened on the top of the docking block 44. When the electromagnetic telescopic rod 52 is energized and pushes the conical block 51 downward, if there is a slight offset between the conical block 51 and the conical groove 5 after collision reset and attitude fine adjustment, the conical block 51 will contact the inner wall of the conical groove 5. The downward pushing force of the electromagnetic telescopic rod 52 will be decomposed into a lateral component along the conical surface. This lateral component pushes the docking block 44 to deflect slightly until the conical block 51 and the conical surface of the conical groove 5 are completely attached, realizing automatic alignment and smooth insertion into the conical groove 5, and completing the attitude locking of the rotating ball 43. To cushion the impact during a collision and protect the laser emitting module 6 and laser head 61, such as Figure 4 or Figure 7As shown, a protective component is fitted around the bottom of the laser emitting module 6. In the event of a collision, the electromagnetic telescopic rod 52 retracts, causing the conical block 51 to disengage from the conical groove 5, allowing the rotating ball 43 and the laser emitting module 6 to deflect freely. Both the electromagnetic telescopic rod 52 and the laser emitting module 6 are electrically connected to the device's control system via wires. Upon receiving a collision trigger signal, the control system synchronously controls the power supply to and from the electromagnetic telescopic rod 52 and the start / stop of the laser head 61. The protective component provides physical buffering for the laser emitting module 6. The free deflection of the rotating ball 43 buffers the impact force, preventing direct impact on the laser emitting module 6 and the laser head 61. An emergency stop of the laser head 61 prevents post-collision attitude shift that could lead to accidental laser irradiation, thus achieving dual protection.

[0020] In order to reset the docking block 44 in a non-collision state, such as Figure 4 or Figure 5 As shown, a number of reset springs 46 are provided between the side of the docking block 44 and the inner wall of the slide groove 45. One end of the springs 46 is fixedly connected to the side of the docking block 44, and the other end is fixedly connected to the inner wall of the slide groove 45. In the non-collision state, the springs are in a natural extension and contraction state and are used to apply a reset effect to the docking block 44.

[0021] To achieve the positioning and unlocking of the rotating ball 43, and to adapt to different needs such as normal processing and collision protection, such as Figure 7 As shown, the electromagnetic telescopic rod 52 is connected to the rotating plate 4 via a tension spring 53. When energized, it pushes the conical block 51 into the conical groove 5 to restrict the rotation of the rotating ball 43. When the power is off or the control signal changes, the rebound force of the tension spring 53 causes the conical block 51 to retract and release the rotation restriction. The tension spring 53 is sleeved on the outside of the electromagnetic telescopic rod 52 and is always in a stretched state, possessing a stable reset and rebound capability. During normal processing, the electromagnetic telescopic rod 52 is energized to generate electromagnetic thrust, which overcomes the rebound force of the tension spring 53 and pushes the conical block 51 into the conical groove 5, thereby achieving the positioning and locking of the rotating ball 43. When a collision occurs, the electromagnetic telescopic rod 52 is de-energized, the electromagnetic thrust disappears, and the rebound force of the tension spring 53 causes the conical block 51 to retract rapidly, releasing the rotation restriction on the rotating ball 43. The response is rapid and reliable.

[0022] To facilitate the installation of protective components and provide cushioning, while also allowing for easy installation, removal, and repositioning of the protective components, such as... Figure 9As shown, the protective assembly includes a collision shell 7, a cover plate 71, and a fixing member 73. The collision shell 7 is made of high-strength plastic material, possessing a certain degree of toughness and impact resistance, effectively resisting external collision impacts and preventing the collision force from being directly transmitted to the laser emitting module 6. The collision shell 7 and the cover plate 71 are detachably connected by a snap-fit ​​mechanism, which facilitates the disassembly and assembly of the protective assembly and allows for easy inspection, maintenance, and replacement of internal components. Several support springs 72 are installed on the bottom plate inside the collision shell 7, and the tops of the support springs 72 are all connected to the fixing member 73. The impact shell 7 and the cover plate 71 are provided with clearance openings for the laser emitting module 6 to pass through. The size of the clearance openings is larger than the outer dimensions of the laser emitting module 6, so as to form an movable gap between the impact shell 7 or the cover plate 71 and the laser emitting module 6. This ensures that the impact shell 7 can be displaced relative to the laser emitting module 6 when a collision occurs, thereby triggering subsequent collision detection and protection actions. The top of the fixing member 73 is provided with a mounting rod 8, the end of which extends to the outside of the impact shell 7. The mounting rod 8 is inserted into a screw 81, and the fixing member 73 is connected to the laser emitting module 6 through the screw 81.

[0023] To build the circuit foundation for collision detection, such as Figure 9 or Figure 10 As shown, a main circuit module 74 is provided on the top of the fixing member 73, and an auxiliary circuit module 75 is provided on the bottom of the cover plate 71. The main circuit module 74 and the auxiliary circuit module 75 are arranged opposite to each other, and at least three electric contact balls 76 are clamped between them. The main circuit module 74 is provided with a groove for mounting the electric contact balls 76. The main circuit module 74 is electrically connected to the control system. The auxiliary circuit module 75 forms a disconnectable electrical conduction structure with the main circuit module 74 through the electric contact balls 76, which constitutes the circuit basis for collision detection. The three electric contact balls 76 are evenly distributed in a triangle, which can ensure that the power connection between the main circuit module 74 and the auxiliary circuit module 75 is stable and reliable, and avoid the detection mechanism from being falsely triggered or failing due to poor contact of a single electric contact ball 76.

[0024] To detect collision signals and trigger subsequent protective actions upon collision, such as... Figure 9As shown, the electric contact ball 76 is used to form an electrical connection between the main circuit module 74 and the auxiliary circuit module 75. The main circuit module 74 is equipped with several magnetic posts 761 for attracting the electric contact ball 76. The main circuit module 74 includes a circuit board, a digital-analog circuit processing unit, and a preset program chip. The digital-analog circuit processing unit and the preset program chip are both integrated on the circuit board, jointly realizing signal detection, processing, and control command output functions. The auxiliary circuit module 75 is a conductive plate with magnetic conductivity. The electric contact ball 76 is magnetically conductive; under the action of the magnetic posts 761, the electric contact ball 76 is energized. The magnetic column 76 is attached to the main circuit module 74. Since the auxiliary circuit module 75 is a magnetic conductive plate, it will be attracted by the energized electric contact ball 76. Under normal conditions, the electric contact ball 76 will be connected to both the main circuit module 74 and the auxiliary circuit module 75 under the magnetic attraction. When a collision occurs and a relative displacement occurs between the main circuit module 74 and the auxiliary circuit module 75, the relative displacement overcomes the magnetic attraction force of the magnetic column 761, causing the electric contact ball 76 to separate from the auxiliary circuit module 75. This disconnects the power circuit between the main circuit module 74 and the auxiliary circuit module 75 and generates a change in electrical signal.

[0025] To guide the displacement of the fixing component 73 during a collision and prevent it from jamming or shifting, such as Figure 9 As shown, the inner wall of the collision shell 7 is provided with a number of supporting arc blocks 77, and the outer side of the fixing member 73 is provided with a number of arc blocks 78 that abut against the supporting arc blocks 77. The supporting arc blocks 77 and the arc blocks 78 are used to guide and restrict the displacement direction of the fixing member 73 when a collision occurs. The two abut against each other to form a guiding fit, which can guide the fixing member 73 and the main circuit module 74 to move along a preset direction when a collision occurs.

[0026] To reduce the occurrence of false triggering caused by vibration during normal processing, such as Figure 9 As shown, the supporting arc block 77 and the arc block 78 are respectively provided with mutually attractive magnetic blocks 79, so that the main circuit module 74 and the auxiliary circuit module 75 maintain a stable relative position under normal processing or when the laser head 61 vibrates, so as to prevent false triggering caused by vibration. During normal processing, the magnetic block 79 is a permanent magnet, and the mutual attraction force keeps the supporting arc block 77 and the arc block 78 in close contact, thereby keeping the main circuit module 74 and the auxiliary circuit module 75 in a stable relative position and counteracting the force generated by the vibration of the laser head 61. When a collision occurs, the impact force causes the relative displacement to exceed the attraction and holding force of the magnetic block 79, the attraction effect fails, the main circuit module 74 and the auxiliary circuit module 75 are relatively displaced, and the collision detection is triggered, thus achieving the dual effect of preventing false triggering and reliable protection.

[0027] First, the workpiece to be processed is fixed on the operating table 1. According to the processing requirements, the power, focal position and light emission sequence of the two laser heads 61 are set by the control system. A suitable dual-beam collaborative working mode is selected. Then, the position and angle of the three-dimensional moving part 2 and the rotating component 3 are adjusted. With the deflection of the rotating ball 43, the laser emission module 6 is in the preset processing posture. At this time, the electromagnetic telescopic rod 52 is energized, pushing the conical block 51 into the conical groove 5 and locking the position of the rotating ball 43. At the same time, due to the magnetic attraction of the two magnetic blocks 79, the support arc block 77 and the arc block 78 are attracted. The electric contact ball 76 keeps the main circuit module 74 and the auxiliary circuit module 75 connected under the attraction of the magnetic column 761. The device enters the processing state. The control system controls the laser head 61 to start and coordinates the movement of the three-dimensional moving part 2 and the rotating component 3 to complete the cutting or welding processing of the workpiece. During processing, the reset spring 46 and the magnetic block 79 respectively stabilize the relative positions of the docking block 44 and the main and auxiliary circuit modules, preventing attitude deviation or false triggering caused by vibration. If a collision occurs, the collision force acts on the collision shell 7, causing the auxiliary circuit module 75 to move relative to the main circuit module 74, overcoming the attraction force of the magnetic block 79 and the attraction force of the magnetic column 761 on the electric contact ball 76, causing the electric contact ball 76 to detach from the auxiliary circuit module 75, disconnecting the main circuit circuit and generating an electrical signal change. After receiving the signal, the control system immediately controls the electromagnetic telescopic rod 52 to de-energize, the tension spring 53 drives the conical block 51 to retract, releasing the lock on the rotating ball 43, allowing the rotating ball 43 to deflect freely and buffer the impact force. At the same time, the laser head 61 stops emitting light, and the laser emitting module 6 stops moving. After the collision is resolved, the operator checks that the device is undamaged, adjusts the laser emitting module 6 to the preset posture, re-energizes the electromagnetic telescopic rod 52, restores the conductivity of the electric contact ball 76, and the device returns to normal processing status.

[0028] Compared with existing laser emitter structures that automatically retract after a collision, this invention does not only avoid mechanical damage by axial clearance, but also addresses the high requirements for optical precision and coaxiality stability in dual-beam collaborative processing. It cuts off laser emission when a collision occurs and releases the mechanical impact through a switchable locking deflection clearance structure. This avoids mechanical damage while preventing the disruption of the relative positional relationship between the two beams, significantly improving the safety and processing reliability of the dual-beam three-dimensional laser cutting and welding composite device.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A dual-beam collaborative three-dimensional laser cutting and welding composite device, comprising an operating table (1) and a laser emitting module (6), wherein the laser emitting module (6) is provided with at least two laser heads (61), characterized in that, Also includes: A three-dimensional moving component (2) is provided on the top of the operating table (1). A rotating component (3) is provided on the three-dimensional moving component (2), and a rotating plate (4) is installed on the rotating component (3). The rotating plate (4) is equipped with a mounting base (41) at the bottom. A spherical groove (42) is provided inside the mounting base (41). A rotating ball (43) is rotatably connected inside the spherical groove (42). The laser emitting module (6) is located at the bottom of the rotating ball (43). The mounting base (41) has a groove (45) on its top, and the rotating ball (43) has a docking block (44) on its top. The docking block (44) is located in the groove (45) and can rotate freely relative to the groove (45). The rotating plate (4) is provided with an electromagnetic telescopic rod (52) inside, and a conical block (51) is provided at the end of the electromagnetic telescopic rod (52). The top of the docking block (44) is provided with a conical groove (5) that cooperates with the conical block (51). The laser emitting module (6) is fitted with a protective component on its outer bottom. When a collision occurs, the electromagnetic telescopic rod (52) retracts, causing the conical block (51) to disengage from the conical groove (5), thereby allowing the rotating ball (43) and the laser emitting module (6) to deflect freely. At the same time, the laser head (61) is controlled to stop emitting laser light. The electromagnetic telescopic rod (52) and the laser emitting module (6) are electrically connected to the control system of the device via wires.

2. The dual-beam collaborative three-dimensional laser cutting and welding composite device according to claim 1, characterized in that, A number of reset springs (46) are provided between the side of the docking block (44) and the inner wall of the slide groove (45) to apply a reset action to the docking block (44) in a non-collision state.

3. The dual-beam collaborative three-dimensional laser cutting and welding composite device according to claim 1, characterized in that, The electromagnetic telescopic rod (52) is connected to the rotating plate (4) via a tension spring (53). The electromagnetic telescopic rod (52) is electrically connected to the control system. When powered on, it pushes the conical block (51) into the conical groove (5) to restrict the rotation of the rotating ball (43). When the power is off or the control signal changes, the conical block (51) retracts due to the rebound force of the tension spring (53) to release the rotation restriction.

4. The dual-beam collaborative three-dimensional laser cutting and welding composite device according to claim 1, characterized in that, The protective assembly includes a collision shell (7), a cover plate (71), and a fixing member (73). The collision shell (7) and the cover plate (71) are detachably connected by a snap fastener. Several support springs (72) are provided on the bottom plate inside the collision shell (7). The top of each of the support springs (72) is connected to the fixing member (73). The collision shell (7) and the cover plate (71) are provided with clearance openings for the laser emitting module (6) to pass through. The size of the clearance openings is larger than the outer dimensions of the laser emitting module (6) to form an movable gap between the collision shell (7) or the cover plate (71) and the laser emitting module (6). The top of the fixing member (73) is provided with an installation rod (8). The end of the installation rod (8) extends to the outside of the collision shell (7). The installation rod (8) is inserted with a screw (81). The fixing member (73) is connected to the laser emitting module (6) through the screw (81).

5. The dual-beam collaborative three-dimensional laser cutting and welding composite device according to claim 4, characterized in that, The top of the fixing member (73) is provided with a main circuit module (74), and the bottom of the cover plate (71) is provided with an auxiliary circuit module (75). The main circuit module (74) and the auxiliary circuit module (75) are arranged opposite to each other, and at least three electric contact balls (76) are clamped between them. The main circuit module (74) is electrically connected to the control system.

6. The dual-beam collaborative three-dimensional laser cutting and welding composite device according to claim 5, characterized in that, The electric contact ball (76) is used to form an electrical connection between the main circuit module (74) and the auxiliary circuit module (75). The main circuit module (74) is provided with a plurality of magnetic pillars (761) for attracting the electric contact ball (76). The electric contact ball (76) is magnetic, so that the electric contact ball (76) is connected to both the main circuit module (74) and the auxiliary circuit module (75) under the magnetic attraction under normal conditions. When a collision occurs and a relative displacement occurs between the main circuit module (74) and the auxiliary circuit module (75), the relative displacement overcomes the magnetic attraction holding force of the magnetic pillars (761), causing the electric contact ball (76) to detach from the auxiliary circuit module (75), thereby breaking the electrical circuit between the main circuit module (74) and the auxiliary circuit module (75) and generating an electrical signal change.

7. A dual-beam collaborative three-dimensional laser cutting and welding composite device according to any one of claims 4 to 6, characterized in that, The inner wall of the collision shell (7) is provided with a number of supporting arc blocks (77), and the outer side of the fixing member (73) is provided with a number of arc blocks (78) that abut against the supporting arc blocks (77). The supporting arc blocks (77) and the arc blocks (78) are used to guide and restrict the displacement direction of the fixing member (73) when a collision occurs.

8. The dual-beam collaborative three-dimensional laser cutting and welding composite device according to claim 7, characterized in that, The supporting arc block (77) and the arc block (78) are respectively provided with mutually attractive magnetic blocks (79) so that the main circuit module (74) and the auxiliary circuit module (75) maintain a stable relative position under normal processing or when the laser head (61) vibrates, so as to prevent false triggering caused by vibration. When the laser emitting module (6) is subjected to external collision and the relative displacement between the main circuit module (74) and the auxiliary circuit module (75) exceeds the adsorption and holding force of the magnetic block (79), the circuit state between the main circuit module (74) and the auxiliary circuit module (75) changes.

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