A quasi-synchronous laser welding machine

Abstract

The present invention discloses a quasi-synchronous laser welding machine, which belongs to the field of laser welding technology; it includes a housing, a limit assembly, a clamping assembly, and a control system. A mechanical arm is installed in the housing, and the output end of the mechanical arm is fixedly connected to a laser emitting tube. A protective assembly is installed on the outside of the laser emitting tube, and the protective assembly includes a protective cover rotatably sleeved on the outside of the laser emitting tube, a transmission ring is fixedly connected to the upper side of the protective cover, and a gear ring is fixedly connected to the outside of the transmission ring. Under the action of the protective cover, the present invention reduces the possibility of liquid splashing to other places, and most of the splashed liquid falls on the inside of the protective cover. Since the protective cover is in a rotating state, under the action of centrifugal force, the liquid moves along the protective cover to the edge of the protective cover and then falls into the annular receiving plate under the dual action of centrifugal force and its own gravity, thereby completing the collection and processing operation of the liquid.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, and in particular to a quasi-synchronous laser welding machine. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Compared with other welding methods, laser welding has a small range of heat-affected zone changes, low deformation, no need to use a motor, and little pollution. During the laser processing process, the object to be processed is placed in the laser welding machine and the corresponding processing operation begins. It has a high degree of intelligence and automation.

[0003] However, in the actual processing process, under the action of high temperature, a certain amount of high-temperature liquid splashes will be generated. These liquids splashing everywhere are not only dangerous, but the high-temperature liquid falls near the object, which will cause certain damage to the object itself. Sometimes, if the liquid splashes too much, it means that there are certain defects in the laser emitting end, which needs to be remedied in time. At the same time, after the processing is completed, there is no detection operation for the weld in the laser welding machine, and manual detection is required. It is time-consuming and labor-intensive, the workload of manual detection is large, and the detection effect is general. Therefore, a quasi-synchronous laser welding machine is provided. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a quasi-synchronous laser welding machine.

[0005] The present invention adopts the following technical solutions:

[0006] A quasi-synchronous laser welding machine comprises a housing, a limit assembly, a clamping assembly, and a control system. A mechanical arm is installed in the housing, and an output end of the mechanical arm is fixedly connected to a laser emitting tube. A protective assembly is installed on the outside of the laser emitting tube. The protective assembly comprises a protective cover rotatably sleeved on the outside of the laser emitting tube. A transmission ring is fixedly connected to the upper side of the protective cover, and a gear ring is fixedly connected to the outside of the transmission ring. A first connecting plate is fixedly connected to the outside of the laser emitting tube, and a motor is fixedly connected to the lower side of the first connecting plate. A rotating shaft is fixedly connected to the output end of the motor, and the rotating shaft is fixedly connected to the outside of the rotating shaft. A driving gear is fixedly connected, and the driving gear is meshed with a gear ring. A first connecting rod is fixedly connected to the side wall of the laser emitting tube, and one end of the first connecting rod is fixedly connected to an annular receiving plate, and the annular receiving plate is located on the lower side of the protective cover. A discharge pipe is fixedly installed in the annular receiving plate, and a one-way control valve is fixedly installed on the outer side of the discharge pipe. One end of the discharge pipe is fixedly connected to a receiving box, and a button is fixedly installed on the upper side of the annular receiving plate. An arc block is slidably connected in the annular receiving plate, and a second connecting rod is fixedly connected to the upper side of the arc block, and the second connecting rod is fixedly connected to the protective cover.

[0007] Preferably, a detection assembly is installed on the outer side of the laser emitting tube, and the detection assembly includes a second connecting plate fixedly installed on the side wall of the laser emitting tube, a rotating cylinder is rotatably connected to the lower side of the second connecting plate, a first incomplete gear is fixedly connected to the outer side of the rotating cylinder, a second incomplete gear is fixedly sleeved on the outer side of the transmission ring, the first incomplete gear and the second incomplete gear are meshed, and two groups of first threaded rods are symmetrically rotatably connected to the lower side of the first incomplete gear, the outer sides of the two groups of the first threaded rods are threadedly sleeved with the same threaded plate, and the lower side of the threaded plate is rotatably connected to A rotating ring is connected, and two groups of sliding rods are fixedly connected to the lower side of the rotating ring, and two groups of clamping plates are installed on the lower side of the rotating ring, and sliding grooves are opened on the upper sides of the two groups of clamping plates, and sliders are slidably connected in the sliding grooves, and a second spring is fixedly connected between the slider and the side wall of the sliding groove, the sliding rod and the slider are fixedly connected, and multiple groups of through grooves are opened on the side walls of the two groups of clamping plates, and a fifth connecting plate is slidably connected up and down in the multiple groups of through grooves, and an extension rod is fixedly connected to the lower side of the fifth connecting plate, and a round rod is fixedly connected to the lower side of the extension rod, and a displacement sensor is fixedly connected to the upper side of the fifth connecting plate.

[0008] Preferably, a shaking assembly for the clamping plate is installed on the lower side of the second connecting plate, and the shaking assembly includes a fourth connecting plate fixedly connected to the two clamping plates, the side wall of the fourth connecting plate is fixedly connected with a protrusion, the second connecting plate is slidably connected to a square rod, the upper side of the square rod is fixedly connected to a third connecting plate, a first spring is fixedly connected between the third connecting plate and the second connecting plate, a second threaded rod is fixedly connected to the lower side of the square rod, a threaded ring is threadedly sleeved on the outer side of the second threaded rod, the threaded ring is fixedly connected to the rotating cylinder, the lower side of the second threaded rod is fixedly connected to a fourth connecting rod, and the outer side of the fourth connecting rod is fixedly connected to multiple groups of circular rings.

[0009] Preferably, a knocking assembly is installed on the lower side of the fourth connecting rod, and the knocking assembly includes a movable plate fixedly installed on the lower side of the fourth connecting rod, and multiple groups of deep grooves are opened on the lower side of the movable plate. The multiple groups of deep grooves are slidably connected with knocking rods, and a third spring is fixedly connected between the knocking rod and the deep groove.

[0010] Preferably, a tension sensor is fixedly connected between the knocking rod and the deep groove.

[0011] Preferably, a connecting ring is slidably connected to the outer side of one of the sliding rods, a third connecting rod is fixedly connected to the outer side of the connecting ring, a limiting ring is fixedly connected to the outer side of the laser emitting tube, and the third connecting rod and the limiting ring are fixedly connected.

[0012] Preferably, the lower end of the knocking rod is conical.

[0013] The beneficial effects of the present invention are:

[0014] 1. First, during the laser welding process, the protective cover reduces the possibility of liquid splashing to other places. Most of the splashed liquid falls on the inside of the protective cover. Since the protective cover is in a rotating state, under the action of centrifugal force, the liquid moves along the protective cover to the edge of the protective cover and then falls into the annular receiving plate under the dual action of centrifugal force and its own gravity, thereby completing the collection and processing of the liquid. During this process, the staff can observe and compare the amount of liquid on the front side of the arc block. If there is more liquid on the front side of the arc block, it means that a large amount of splashed liquid is generated during the laser welding process, and timely adjustment and remedy are required;

[0015] 2. During the laser welding process, multiple groups of round rods are located on the upper side of the weld. At this time, the displacement sensor sends out corresponding electrical signals. During this process, if the electrical signals sent by all displacement sensors are within a reasonable range, it means that the weld quality is good. If the electrical signals sent by one or several displacement sensors suddenly become particularly large or small, it means that there are processing defects in the laser welding process, which need to be dealt with in a timely manner to complete the weld inspection operation;

[0016] 3. In this process, the round rod will move back and forth, which can form a cleaning operation on the weld surface, thereby ensuring the detection effect of the weld. In the process of weld detection, the value changes of two adjacent displacement sensors can be compared, thereby completing the weld detection operation more comprehensively.

[0017] 4. Finally, when the tapping rod and the weld are in contact, a certain amount of force will be applied to the weld, forming a tapping operation on the weld. In this process, due to the conical structure on the lower side of the tapping rod, if the tapping rod does not touch the weld, the tension sensor will not send a corresponding signal, which means that there are certain through holes on the surface of the weld, and there are large processing defects in the laser welding. When the weld is tapped and the round rod is used for detection again, the displacement sensors on both sides can be compared. If the electrical signal values ​​emitted by the displacement sensors on both sides are quite different, it means that after tapping, the quality of the weld after processing is average and needs to be adjusted accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a quasi-synchronous laser welding machine proposed by the present invention;

[0019] Figure 2 A schematic diagram of the connection between the internal mechanical arm and the laser emitting tube of a quasi-synchronous laser welding machine proposed by the present invention;

[0020] Figure 3 A schematic diagram of the connection between a laser emitting tube and a protective cover in a quasi-synchronous laser welding machine proposed by the present invention;

[0021] Figure 4 A top view schematic diagram of the connection between a laser emitting tube and a protective cover in a quasi-synchronous laser welding machine proposed by the present invention;

[0022] Figure 5 A schematic diagram of the internal connection of a protective cover in a quasi-synchronous laser welding machine proposed by the present invention;

[0023] Figure 6 A top view connection diagram of an annular receiving plate in a quasi-synchronous laser welding machine proposed by the present invention;

[0024] Figure 7 A schematic diagram of the connection between a clamping plate and a rotating cylinder in a quasi-synchronous laser welding machine proposed by the present invention;

[0025] Figure 8 A cross-sectional connection diagram of a rotating cylinder in a quasi-synchronous laser welding machine proposed by the present invention;

[0026] Fig. 9 for Figure 8 A magnified view of the structure at center A;

[0027] Fig.10 This is a bottom-up connection schematic diagram of a rotating cylinder in a quasi-synchronous laser welding machine proposed by the present invention;

[0028] Fig.11 A schematic diagram of the structure of a clamping plate in a quasi-synchronous laser welding machine proposed by the present invention;

[0029] Fig.12 This is a schematic structural diagram of another angle of a clamping plate in a quasi-synchronous laser welding machine proposed by the present invention;

[0030] Fig.13 This is a schematic cross-sectional connection diagram of a moving plate in a quasi-synchronous laser welding machine proposed by the present invention.

[0031] In the figure: 1 housing, 2 limit assembly, 3 clamping assembly, 4 control system, 5 mechanical arm, 6 laser emitting tube, 7 protective cover, 8 first connecting plate, 9 motor, 10 driving gear, 11 gear ring, 12 annular receiving plate, 13 second connecting plate, 14 rotating cylinder, 15 first incomplete gear, 16 round rod, 17 first connecting rod, 18 transmission ring, 19 one-way control valve, 20 discharge pipe, 21 receiving box, 22 arc block, 23 button, 24 second connecting rod, 25 limit ring, 26 third connecting rod, 27 square rod, 2 8 the third connecting plate, 29 the first spring, 30 the first threaded rod, 31 the threaded plate, 32 the fourth connecting rod, 33 the clamping plate, 34 the second threaded rod, 35 the moving plate, 36 the threaded ring, 37 the circular ring, 38 the sliding groove, 39 the sliding block, 40 the second spring, 41 the sliding rod, 42 the connecting ring, 43 the rotating ring, 44 the through groove, 45 the extension rod, 46 the fourth connecting plate, 47 the fifth connecting plate, 48 the displacement sensor, 49 the protrusion, 50 the knocking rod, 51 the deep groove, 52 the third spring, 53 the tension sensor, 54 the second incomplete gear. DETAILED DESCRIPTION

[0032] See also Figure 1-Figure 13 A quasi-synchronous laser welding machine comprises a housing 1, a limit assembly 2, a clamping assembly 3, and a control system 4. A mechanical arm 5 is installed in the housing 1, and a laser emitting tube 6 is fixedly connected to the output end of the mechanical arm 5;

[0033] First, multiple sets of slide rails are installed in the shell 1, and the limit device includes a limit plate and a limit rod. The limit plate is slidably installed on the slide rail, the limit rod is fixedly installed on the limit plate, and a clamping rod is threadedly sleeved on the outer side of the limit rod. The clamping assembly 3 includes a clamping plate and a clamping rod. The clamping plate is slidably installed on the slide rail, the clamping rod is fixedly installed on the clamping plate, and a clamping plate is threadedly sleeved on the outer side of the clamping rod. The control system 4 includes a control panel rotatably installed on the outer side wall, and the side wall of the control panel is fixedly connected with a display screen. The side wall of the control panel is also equipped with multiple sets of buttons 23. When it is necessary to perform welding operations on the objects, the objects are placed in the shell 1, and the limit plate and the clamping rod in the limit device are controlled to move or rotate through the buttons 23 inside the control system 4, and the clamping plate and the clamping plate in the clamping device are controlled to move or rotate, and the objects are fixedly installed on the shell 1, and the mechanical arm 5 and the laser emitting tube 6 are started. The mechanical arm 5 drives the laser emitting tube 6 to start laser welding operations along the gap between the two objects to be welded. The above are all prior arts and no unnecessary elaboration is made.

[0034] like Figure 3 , Figure 4 , Figure 5 , Figure 6 A protective assembly is installed on the outer side of the laser emitting tube 6, and the protective assembly includes a protective cover 7 rotatably sleeved on the outer side of the laser emitting tube 6, a transmission ring 18 is fixedly connected to the upper side of the protective cover 7, and a gear ring 11 is fixedly connected to the outer side of the transmission ring 18, a first connecting plate 8 is fixedly connected to the outer side of the laser emitting tube 6, a motor 9 is fixedly connected to the lower side of the first connecting plate 8, a rotating shaft is fixedly connected to the output end of the motor 9, and a driving gear 10 is fixedly connected to the outer side of the rotating shaft, and the driving gear 10 is meshed with the gear ring 11, and a first connecting rod 17 is fixedly connected to the side wall of the laser emitting tube 6, One end of the first connecting rod 17 is fixedly connected to an annular receiving plate 12, the annular receiving plate 12 is located at the lower side of the protective cover 7, a discharge pipe 20 is fixedly installed in the annular receiving plate 12, a one-way control valve 19 is fixedly installed on the outer side of the discharge pipe 20, one end of the discharge pipe 20 is fixedly connected to a receiving box 21, a button 23 for controlling the switch of the one-way control valve 19 is fixedly installed on the upper side of the annular receiving plate 12, an arc block 22 is slidably connected in the annular receiving plate 12, a second connecting rod 24 is fixedly connected to the upper side of the arc block 22, and the second connecting rod 24 is fixedly connected to the protective cover 7;

[0035] First, the button 23 is electrically connected to the one-way control valve 19 through a wire. When an external force presses the button 23, the one-way control valve 19 will be opened. This is a prior art and no unnecessary elaboration is made. Secondly, when performing laser welding operation, the motor 9 is started, and the motor 9 drives the active gear 10 to rotate through the rotating shaft, and the active gear 10 drives the gear ring 11 to rotate, and the gear ring 11 drives the transmission ring 18 and the protective cover to rotate. During the laser welding process, the position where the two objects are processed will become a molten state, and liquid splashing will occur at this time (this is a normal phenomenon). The temperature of the liquid generated by the splashing is extremely high. Under the action of the protective cover 7, the possibility of the liquid splashing to other places is reduced. Most of the splashed liquid falls on the inner side of the protective cover 7. Since the protective cover 7 is in a rotating state, the liquid moves along the protective cover 7 to the edge of the protective cover 7 under the action of centrifugal force, and then moves to the edge of the protective cover 7 under the dual force of centrifugal force and its own gravity. Under the action of gravity, it falls into the annular receiving plate 12. During this process, the rotating protective cover 7 drives the arc block 22 to move along the annular receiving plate 12 through the second connecting rod 24. When the arc block 22 does not abut against the button 23, the one-way control valve 19 is in a closed state, and the liquid inside the annular receiving plate 12 does not enter the receiving box 21 through the discharge pipe 20. The liquid in front of the arc block 22 will gradually increase. When the arc block 22 is located on the upper side of the button 23 and abuts against the button 23, the one-way control valve 19 will be opened, and the liquid in front of the arc block 22 will move along the discharge pipe 20 to the receiving box 21, thereby completing the collection and processing operation of the liquid. During this process, the staff can observe and compare the amount of liquid in front of the arc block 22. If there is more liquid in front of the arc block 22, it means that a large amount of splashing liquid has been generated during the laser welding process, and timely adjustment and remedy are required.

[0036] like Figure 7 , Figure 8 , Fig. 9 , Fig.10A detection assembly is installed on the outer side of the laser emitting tube 6, and the detection assembly includes a second connecting plate 13 fixedly installed on the side wall of the laser emitting tube 6, and a rotating cylinder 14 is rotatably connected to the lower side of the second connecting plate 13, and a first incomplete gear 15 is fixedly connected to the outer side of the rotating cylinder 14, and a second incomplete gear 54 is fixedly sleeved on the outer side of the transmission ring 18, and the first incomplete gear 15 and the second incomplete gear 54 are meshed. The lower side of the first incomplete gear 15 is symmetrically rotatably connected with two groups of first threaded rods 30, and the outer sides of the two groups of first threaded rods 30 are threadedly sleeved with the same threaded plate 31, and the lower side of the threaded plate 31 is rotatably connected with a rotating ring 43, and the lower side of the rotating ring 43 is fixedly connected with two groups of sliding rods 41, and two groups of clamping plates 33 are installed on the lower side of the rotating ring 43, and the upper sides of the two groups of clamping plates 33 are provided with sliding grooves 38, and the sliding blocks 3 are slidably connected in the sliding grooves 38. 9. A second spring 40 is fixedly connected between the slider 39 and the side wall of the slide groove 38. The slide rod 41 is fixedly connected to the slider 39. Multiple groups of through grooves 44 are opened on the side walls of the two groups of clamping plates 33. A fifth connecting plate 47 is slidably connected in the multiple groups of through grooves 44. An extension rod 45 is fixedly connected to the lower side of the fifth connecting plate 47. A round rod 16 is fixedly connected to the lower side of the extension rod 45. A displacement sensor 48 is fixedly connected to the upper side of the fifth connecting plate 47. A connecting ring 42 is slidably connected to the outer side of one of the sliding rods 41. A third connecting rod 26 is fixedly connected to the outer side of the connecting ring 42. A limiting ring 25 is fixedly connected to the outer side of the laser emitting tube 6. The third connecting rod 26 and the limiting ring 25 are fixedly connected. Under the action of the connecting ring 42, the third connecting rod 26 and the limiting ring 25, the two clamping plates 33 can only move up and down relative to the laser emitting tube 6.

[0037] First, the displacement sensor 48, also known as a linear sensor, is a linear device belonging to metal induction. The function of the sensor is to convert various measured physical quantities into electrical quantities. One end of the displacement sensor 48 is fixedly mounted on the fifth connecting plate 47, and the other end is fixedly mounted on the upper side of the through groove 44. Secondly, during the rotation of the transmission ring 18, when the second incomplete gear 54 and the first incomplete gear 15 are meshed, the first incomplete gear 15 will be driven to rotate, and the first incomplete gear 15 will drive the rotating cylinder 14 to rotate. Then, before performing the welding operation, the first threaded rod 30 is rotated first to make the threaded plate 31 move up and down relative to the first incomplete gear 15. The threaded plate 31 drives the clamping plate 33 up and down through the rotating ring 43, the sliding rod 41 and the sliding block 39. Move until the position of the clamp 33 meets the working requirements. At this time, the round rod 16 is located on the upper side of the object to be processed and is against the object to be processed. During the laser welding process, the two clamps 33 are located behind the laser emitting tube 6 as a whole and move with the laser emitting tube 6. During the laser welding process, multiple groups of round rods 16 are located on the upper side of the weld. At this time, the displacement sensor 48 sends out a corresponding electrical signal. During this process, if the electrical signals sent by all the displacement sensors 48 are within a reasonable range, it means that the quality of the weld is good. If the electrical signals sent by one or several displacement sensors 48 suddenly become particularly large or particularly small, it means that a processing defect occurs during the laser welding process and needs to be processed in a timely manner to complete the weld detection operation.

[0038] like Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 A shaking assembly for the clamping plate 33 is installed on the lower side of the second connecting plate 13, and the shaking assembly includes a fourth connecting plate 46 fixedly connected to the two clamping plates 33, and a protrusion 49 is fixedly connected to the side wall of the fourth connecting plate 46. The second connecting plate 13 is slidably connected to the square rod 27 up and down, and the upper side of the square rod 27 is fixedly connected to the third connecting plate 28, and the first spring 29 is fixedly connected between the third connecting plate 28 and the second connecting plate 13. A second threaded rod 34 is fixedly connected to the lower side of the square rod 27, and a threaded ring 36 is threadedly sleeved on the outer side of the second threaded rod 34. The threaded ring 36 is fixedly connected to the rotating cylinder 14, and a fourth connecting rod 32 is fixedly connected to the lower side of the second threaded rod 34, and a plurality of groups of circular rings 37 are fixedly connected to the outer side of the fourth connecting rod 32;

[0039] Firstly, there will be no self-locking between the second threaded rod 34 and the threaded ring 36, that is, the thread lead angle is greater than the equivalent friction angle. Secondly, since the square rod 27 and the second connecting plate 13 are slidably connected up and down, the square rod 27 and the second threaded rod 34 are fixedly connected, the second threaded rod 34 and the threaded ring 36 are threadedly connected, the threaded ring 36 and the rotating cylinder 14 are fixedly connected, and the rotating cylinder 14 and the first incomplete gear 15 are fixedly connected. Therefore, when the first incomplete gear 15 rotates under the action of the second incomplete gear 54, it will cause the rotating cylinder 14 and the threaded ring 36 to rotate, and the threaded ring 36 will rotate. The grooved ring 36 drives the second threaded rod 34 to move upward, and the second threaded rod 34 drives the third connecting plate 28 to move upward through the square rod 27. The third connecting plate 28 stretches the first spring 29. When the first incomplete gear 15 and the second incomplete gear 54 are disconnected, the square rod 27, the second threaded rod 34 and the fourth connecting rod 32 move downward as a whole under the action of the first spring 29. In this process, the square rod 27, the second threaded rod 34 and the fourth connecting rod 32 can completely return to their original positions under the action of the first spring 29 until the first incomplete gear 15 is connected again. The second threaded rod 34 and the fourth connecting rod 32 are meshed with the second incomplete gear 54, and finally, during the rotation of the transmission ring 18, the square rod 27, the second threaded rod 34 and the fourth connecting rod 32 move up and down as a whole, and the fourth connecting rod 32 and the circular ring 37 move up and down. During this process, under the action of the second spring 40, the protrusion 49 always abuts against the circular ring 37 or the fourth connecting rod 32. Since the diameter of the circular ring 37 is larger than the diameter of the fourth connecting rod 32, when the fourth connecting rod 32 and the circular ring 37 move up and down, the protrusion 49 changes from abutting against the circular ring 37 to abutting against the fourth connecting rod 32. During the cycle from the abutment of the fourth connecting rod 32 to the abutment of the circular ring 37, the clamp 33 will move back and forth as a whole relative to the rotating ring 43. The clamp 33 drives the extension rod 45 and the round rod 16 to move, which will slightly change the contact position between the round rod 16 and the weld. During the contact between the round rod 16 and the weld, the back and forth movement can form a cleaning operation on the weld surface, thereby ensuring the detection effect of the weld. In the process of weld detection, the numerical changes of two adjacent displacement sensors 48 can be compared, thereby completing the weld detection operation more comprehensively.

[0040] like Fig.12 , Fig.13 A knocking assembly is installed on the lower side of the fourth connecting rod 32, and the knocking assembly includes a moving plate 35 fixedly installed on the lower side of the fourth connecting rod 32, and a plurality of deep grooves 51 are opened on the lower side of the moving plate 35, and a knocking rod 50 is slidably connected in the plurality of deep grooves 51, and a third spring 52 is fixedly connected between the knocking rod 50 and the deep groove 51, and the lower end of the knocking rod 50 is conical, and a tension sensor 53 is fixedly connected between the knocking rod 50 and the deep groove 51;

[0041] First, the tension sensor 53 is a device that converts physical signals into measurable electrical signal outputs. Secondly, in the process of the fourth connecting rod 32 moving up and down, the fourth connecting rod 32 drives the movable plate 35 to move up and down, and the fourth connecting rod 32 drives the knocking rod 50 to move up and down through the third spring 52. When the knocking rod 50 and the weld are in contact, a certain amount of force will be applied to the weld, forming a knocking operation on the weld. In this process, due to the conical structure on the lower side of the knocking rod 50, if the knocking rod 50 does not contact the weld, the tension sensor 53 will not send out a corresponding signal, which means that there are certain through holes on the surface of the weld, and there are large processing defects in the laser welding. After the weld is knocked, when the round rod 16 is used for detection operation again, the displacement sensors 48 on both sides can be compared. If the electrical signal values ​​emitted by the displacement sensors 48 on both sides are greatly different, it means that after the knocking, the quality of the weld after processing is general and needs to be adjusted accordingly.

[0042] In the present invention, multiple sets of slide rails are installed in the shell 1, the limit device includes a limit plate and a limit rod, the limit plate is slidably installed on the slide rail, the limit rod is fixedly installed on the limit plate, and the outer side of the limit rod is threadedly sleeved with a clamping rod, the clamping assembly 3 includes a clamping plate and a clamping rod, the clamping plate is slidably installed on the slide rail, the clamping rod is fixedly installed on the clamping plate, and the outer side of the clamping rod is threadedly sleeved with a clamping plate, the control system 4 includes a control panel rotatably installed on the outer side wall, the side wall of the control panel is fixedly connected with a display screen, and the side wall of the control panel is also installed with multiple sets of buttons 23. When it is necessary to perform welding operation on the object, the object is placed in the shell 1, and the limit plate and the clamping rod in the limit device are controlled to move or rotate by the buttons 23 inside the control system 4, and the clamping plate and the clamping plate in the clamping device are controlled to move or rotate, and the object is fixedly installed on the shell 1, and the mechanical arm 5 and the laser emitting tube 6 are started, and the mechanical arm 5 drives the laser emitting tube 6 to start laser welding operation along the gap between the two objects to be welded. The above are all prior arts and no unnecessary elaboration is made;

[0043] When performing laser welding operation, start the motor 9, the motor 9 drives the driving gear 10 to rotate through the rotating shaft, the driving gear 10 drives the gear ring 11 to rotate, and the gear ring 11 drives the transmission ring 18 and the protective cover 7 to rotate. During the laser welding process, the intersection of the two objects being processed will become molten, and liquid splashing will occur at this time (this is a normal phenomenon). The temperature of the liquid generated by the splashing is extremely high. Under the action of the protective cover 7, the possibility of the liquid splashing to other places is reduced. Most of the splashed liquid falls on the inside of the protective cover 7. Since the protective cover 7 is in a rotating state, the liquid moves along the protective cover 7 to the edge of the protective cover 7 under the action of centrifugal force, and then falls into the annular receiving plate 12 under the dual action of centrifugal force and its own gravity. In this process, the rotating protective cover 7 passes through the second The connecting rod 24 drives the arc block 22 to move along the annular receiving plate 12. When the arc block 22 does not abut against the button 23, the one-way control valve 19 is in a closed state, and the liquid inside the annular receiving plate 12 does not enter the receiving box 21 through the discharge pipe 20. The liquid in front of the arc block 22 will gradually increase. When the arc block 22 is located on the upper side of the button 23 and abuts against the button 23, the one-way control valve 19 will be opened, and the liquid in front of the arc block 22 will move along the discharge pipe 20 into the receiving box 21, thereby completing the collection and processing operation of the liquid. During this process, the staff can observe and compare the amount of liquid in front of the arc block 22. If there is more liquid in front of the arc block 22, it means that a large amount of splashing liquid is generated during the laser welding process, and timely adjustment and remedy are required;

[0044] During the rotation of the gear ring 11, when the gear ring 11 and the first incomplete gear 15 abut against each other, the first incomplete gear 15 will be driven to rotate, and the first incomplete gear 15 will drive the rotating cylinder 14 to rotate. Then, before the welding operation, the first threaded rod 30 is rotated first to make the threaded plate 31 move up and down relative to the first incomplete gear 15. The threaded plate 31 drives the clamping plate 33 to move up and down through the rotating ring 43, the sliding rod 41 and the sliding block 39 until the position of the clamping plate 33 meets the working requirements. At this time, the round rod 16 is located on the upper side of the object to be processed and abuts against the object to be processed. During the process, the two clamping plates 33 are integrally located behind the laser emitting tube 6 and move with the laser emitting tube 6. During the laser welding process, the multiple groups of round rods 16 are located on the upper side of the weld. At this time, the displacement sensor 48 sends out a corresponding electrical signal. During this process, if the electrical signals sent out by all the displacement sensors 48 are within a reasonable range, it means that the weld quality is good. If the electrical signals sent out by one or several displacement sensors 48 suddenly become particularly large or particularly small, it means that a processing defect occurs during the laser welding process and needs to be processed in a timely manner, thereby completing the weld inspection operation.

[0045] When the first incomplete gear 15 rotates under the action of the second incomplete gear 54, the rotating cylinder 14 and the threaded ring 36 will rotate, and the threaded ring 36 will drive the second threaded rod 34 to move upward, and the second threaded rod 34 will drive the third connecting plate 28 to move upward through the square rod 27, and the third connecting plate 28 will stretch the first spring 29. When the first incomplete gear 15 and the second incomplete gear 54 are disconnected, at this time, under the action of the first spring 29, the square rod 27, the second threaded rod 34 and the fourth connecting rod 32 move downward as a whole until the first incomplete gear 15 is meshed with the second incomplete gear 54 again, which eventually results in that during the rotation of the transmission ring 18, the square rod 27, the second threaded rod 34 and the fourth connecting rod 32 move up and down as a whole, and the fourth connecting rod 32 and the circular ring 37 move up and down back and forth. In this process, the second spring Under the action of 40, the protrusion 49 is always against the ring 37 or the fourth connecting rod 32. Since the diameter of the ring 37 is larger than the diameter of the fourth connecting rod 32, when the fourth connecting rod 32 and the ring 37 move back and forth up and down, the protrusion 49 changes from being against the ring 37 to being against the fourth connecting rod 32, and from being against the fourth connecting rod 32 to being against the ring 37 in the cycle process, which will cause the clamping plate 33 to move back and forth as a whole relative to the rotating ring 43. The clamping plate 33 drives the extension rod 45 and the round rod 16 to move, which will slightly change the contact position between the round rod 16 and the weld. In the process of the round rod 16 contacting the weld, the back and forth movement can form a cleaning operation on the weld surface, thereby ensuring the detection effect of the weld, and in the process of detecting the weld, the value changes of the two adjacent displacement sensors 48 can be compared, thereby completing the detection operation of the weld more comprehensively.

[0046] During the up and down movement of the fourth connecting rod 32, the fourth connecting rod 32 drives the movable plate 35 to move up and down, and the fourth connecting rod 32 drives the knocking rod 50 to move up and down through the third spring 52. When the knocking rod 50 and the weld are in contact, a certain amount of force will be applied to the weld, forming a knocking operation on the weld. During this process, due to the conical structure on the lower side of the knocking rod 50, if the knocking rod 50 does not contact the weld, the tension sensor 53 will not send a corresponding signal, which means that there are certain through holes on the surface of the weld, and there are large processing defects in the laser welding. After the weld is knocked, when the round rod 16 is used for detection operation again, the displacement sensors 48 on both sides can be compared. If the electrical signal values ​​emitted by the displacement sensors 48 on both sides are greatly different, it means that after the knocking, the quality of the weld after processing is general and needs to be adjusted accordingly.

Claims

1. A quasi-synchronous laser welding machine, comprising a housing (1), a limit assembly (2), a clamping assembly (3), and a control system (4), characterized in that: A mechanical arm (5) is installed in the housing (1); the output end of the mechanical arm (5) is fixedly connected to a laser emitting tube (6); a protective component is installed on the outer side of the laser emitting tube (6); the protective component comprises a protective cover (7) rotatably sleeved on the outer side of the laser emitting tube (6); a transmission ring (18) is fixedly connected to the upper side of the protective cover (7); a gear ring (11) is fixedly connected to the outer side of the transmission ring (18); a first connecting plate (8) is fixedly connected to the outer side of the laser emitting tube (6); a motor (9) is fixedly connected to the lower side of the first connecting plate (8); a rotating shaft is fixedly connected to the output end of the motor (9); a driving gear (10) is fixedly connected to the outer side of the rotating shaft; the driving gear (10) and the gear ring (11) are meshed with each other, the side wall of the laser emitting tube (6) is fixedly connected with a first connecting rod (17), one end of the first connecting rod (17) is fixedly connected with an annular receiving plate (12), the annular receiving plate (12) is located at the lower side of the protective cover (7), a discharge pipe (20) is fixedly installed in the annular receiving plate (12), a one-way control valve (19) is fixedly installed on the outer side of the discharge pipe (20), one end of the discharge pipe (20) is fixedly connected with a receiving box (21), a button (23) is fixedly installed on the upper side of the annular receiving plate (12), an arc block (22) is slidably connected in the annular receiving plate (12), the upper side of the arc block (22) is fixedly connected with a second connecting rod (24), the second connecting The rod (24) and the protective cover (7) are fixedly connected. A detection assembly is installed on the outer side of the laser emitting tube (6). The detection assembly includes a second connecting plate (13) fixedly installed on the side wall of the laser emitting tube (6). The lower side of the second connecting plate (13) is rotatably connected to a rotating cylinder (14). The outer side of the rotating cylinder (14) is fixedly connected to a first incomplete gear (15). The outer side of the transmission ring (18) is fixedly sleeved with a second incomplete gear (54). The first incomplete gear (15) and the second incomplete gear (54) are meshed. The lower side of the first incomplete gear (15) is symmetrically rotatably connected to two groups of first threaded rods (30). The outer sides of the two groups of first threaded rods (30) are threadedly sleeved with the same threaded plate (31). The threaded plate (31) is rotatably connected to a rotating ring (43) at the lower side, and two groups of slide bars (41) are fixedly connected to the lower side of the rotating ring (43). Two groups of clamping plates (33) are installed at the lower side of the rotating ring (43). The upper sides of the two groups of clamping plates (33) are provided with sliding grooves (38). A slider (39) is slidably connected in the sliding groove (38). A second spring (40) is fixedly connected between the slider (39) and the side wall of the sliding groove (38). The slide bar (41) and the slider (39) are fixedly connected. The side walls of the two groups of clamping plates (33) are provided with multiple groups of through grooves (44). A fifth connecting plate (47) is slidably connected in the multiple groups of through grooves (44). The lower side of the fifth connecting plate (47) is fixedly connected to an extension rod (45).The lower side of the extension rod (45) is fixedly connected to a round rod (16), and the upper side of the fifth connecting plate (47) is fixedly connected to a displacement sensor (48).

2. A quasi-synchronous laser welding machine according to claim 1, characterized in that: A shaking assembly for the clamping plate (33) is installed on the lower side of the second connecting plate (13), and the shaking assembly includes a fourth connecting plate (46) fixedly connected to the two clamping plates (33), and the side wall of the fourth connecting plate (46) is fixedly connected to a protrusion (49), and the second connecting plate (13) is slidably connected to a square rod (27) up and down, and the upper side of the square rod (27) is fixedly connected to a third connecting plate (28), and a first spring (29) is fixedly connected between the third connecting plate (28) and the second connecting plate (13), and the lower side of the square rod (27) is fixedly connected to a second threaded rod (34), and the outer side of the second threaded rod (34) is threadedly sleeved with a threaded ring (36), and the threaded ring (36) is fixedly connected to the rotating cylinder (14), and the lower side of the second threaded rod (34) is fixedly connected to a fourth connecting rod (32), and the outer side of the fourth connecting rod (32) is fixedly connected to a plurality of groups of circular rings (37).

3. A quasi-synchronous laser welding machine according to claim 2, characterized in that: A striking assembly is installed on the lower side of the fourth connecting rod (32), and the striking assembly comprises a movable plate (35) fixedly installed on the lower side of the fourth connecting rod (32), and a plurality of groups of deep grooves (51) are opened on the lower side of the movable plate (35), and striking rods (50) are slidably connected in the plurality of groups of deep grooves (51), and a third spring (52) is fixedly connected between the striking rod (50) and the deep groove (51).

4. A quasi-synchronous laser welding machine according to claim 3, characterized in that: A tension sensor (53) is fixedly connected between the knocking rod (50) and the deep groove (51).

5. The quasi-synchronous laser welding machine according to claim 1, characterized in that: A connecting ring (42) is slidably connected to the outer side of one of the sliding rods (41), a third connecting rod (26) is fixedly connected to the outer side of the connecting ring (42), a limiting ring (25) is fixedly connected to the outer side of the laser emitting tube (6), and the third connecting rod (26) and the limiting ring (25) are fixedly connected.

6. The quasi-synchronous laser welding machine according to claim 3, characterized in that: The lower end of the knocking rod (50) is conical.

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