Laser welding machine capable of assisting in deburring

Abstract

The invention relates to the technical field of laser welding, and particularly discloses a laser welding machine capable of assisting deburring, which comprises a supporting base horizontally placed on the ground, a transversely arranged welding platform is fixedly mounted on the upper surface of the supporting base, and supporting rollers which are uniformly distributed at equal intervals are rotatably mounted on the inner side of the upper part of the welding platform; a plate body needing to be welded is placed above the supporting rollers, and a multi-axis mechanical arm is installed on the left side of the welding platform. According to the laser welding machine capable of assisting in deburring, a plate body needing to be welded is fixed and limited through limiters below a first movable frame and a second movable frame, then a motor drives a transmission lead screw to rotate, the transmission lead screw drives a connecting rod to move front and back, and meanwhile a motor on the side face of a mounting plate drives a grinding roller to rotate; and the surface of the plate body is polished through the polishing rollers, the purpose of deburring is achieved, and the situation that subsequent welding quality is affected by burrs on the surface of the plate body is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of laser welding, in particular to a laser welding machine capable of assisting in deburring. Background Art

[0002] Laser welding is a welding technology that uses a high-energy laser beam heat source to heat the joints of metals or other materials to a molten state, thereby achieving connection between materials. It is commonly used in automotive manufacturing, electronics, aerospace and other fields.

[0003] As in the prior art, a Chinese patent with publication number CN106001922A discloses a laser welding machine, which includes a frame, an electrical cabinet is arranged in the frame, a lifting mechanism is arranged on the frame, a welding optical path system is arranged on the lifting mechanism, the welding optical path system includes an optical platform, a laser emitter, a galvanometer support, a Y galvanometer, an X galvanometer, a circuit board and an optical lens group, the optical platform is arranged at the top of the lifting mechanism, the laser emitter is arranged in the optical platform, the galvanometer support is arranged on one side of the output end of the laser emitter, the Y galvanometer is arranged on the top of the galvanometer support, the X galvanometer is arranged on the side plate of the galvanometer support, a window is arranged on the optical platform below the galvanometer support, the optical lens group is arranged at the bottom of the optical platform, the circuit board is fixed in the optical platform, and the circuit board is electrically connected to the laser emitter.

[0004] As another example in the prior art, a Chinese patent with publication number CN107262922A discloses a laser welding machine, which includes a base, a positioning assembly, a laser generator, a focusing assembly and a heat dissipation mechanism; a positioning groove for placing a product is provided on the base, and a heat-conducting layer is provided on the inner wall of the positioning groove; the positioning assembly is provided on the base, and the positioning assembly is used to clamp the product on the base; a laser generator is provided on the base, and the laser generator is used to generate a laser beam; a focusing assembly is provided on the base, and the focusing assembly is used to focus the laser beam on the product; the heat dissipation mechanism includes a heat-conducting substrate and fins, the heat-conducting substrate is provided on the base and abuts against the heat-conducting layer, and the fins are provided on the heat-conducting substrate.

[0005] As another example in the prior art, a Chinese patent with publication number CN116900524B discloses a laser welding machine, comprising a workbench; a distribution box is installed at the bottom of the workbench, and a welding gun is connected through electric wires; fixed blocks are fixedly connected to both sides of the top of the workbench; a push plate is slidably connected to the middle of the fixed block; the push plate is driven by a motor; a clamping plate is fixedly connected to the end of the push plate; a plurality of groups of No. 1 connecting plates are slidably connected to the side wall of the clamping plate; a No. 1 slide groove is provided on the side wall of the clamping plate above the No. 1 connecting plate; and a limit plate is fixedly connected to the top surface of the clamping plate at the corresponding position of each group of No. 1 connecting plates.

[0006] Based on the above materials, it can be known that in the prior art, the laser welding machine uses the high temperature generated by the laser to achieve the purpose of welding. However, the workpiece to be welded will have certain burrs on the side after production. The protruding burrs will affect the docking of the two welded workpieces, thereby affecting the overall welding quality. Summary of the invention

[0007] The object of the present invention is to provide a laser welding machine that can assist in deburring, so as to solve the problem that the burrs on the surface of the workpiece affect the welding quality as mentioned in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a laser welding machine capable of assisting in deburring, comprising a support base horizontally placed on the ground, a horizontally arranged welding platform fixedly mounted on the upper surface of the support base, and further comprising: Support rollers evenly distributed at equal intervals are rotatably installed on the inner side above the welding platform, and a plate body to be welded is placed above the support rollers. A multi-axis robotic arm is installed on the left side of the welding platform, and a laser welding head is installed on the top of the multi-axis robotic arm. A first movable frame and a second movable frame are installed above the welding platform, and both the first movable frame and the second movable frame are provided with an arch structure, and the lower surfaces of the first movable frame and the second movable frame are both provided with a limiter of a telescopic rod structure; A transversely arranged connecting plate is installed above the first movable frame, and a longitudinally arranged mounting plate is installed below the connecting plate, and a grinding roller for grinding burrs at the welding position of the plate body is rotatably installed on the side of the mounting plate, and a cleaning mechanism for cleaning debris after grinding is provided below the first movable frame; A negative pressure head for absorbing welding exhaust gas is installed above the second movable frame, and a small air pump is fixedly installed on the upper surface of the left side of the welding platform, and the small air pump is connected to the negative pressure head through a second connecting pipe.

[0009] Preferably, a through-type up-and-down sliding structure is formed between the upper end of the mounting plate and the connecting plate, and a telescopic spring is installed outside the upper end of the mounting plate.

[0010] Preferably, a transmission screw and a guide slide rod are installed through the rear end of the connecting plate, and the transmission screw is threadedly connected to the connecting plate, and the transmission screw is driven by a motor to be rotatably connected to the first movable frame.

[0011] Preferably, the cleaning mechanism comprises a cleaning nozzle fixedly mounted on the lower surface of the first movable frame and an air blowing bag fixedly mounted on the upper surface of the first movable frame, and the air blowing bag is connected to the cleaning nozzle through a first connecting pipe.

[0012] Preferably, the airbags are uniformly distributed at equal intervals as a whole, and the airbags and the connecting plates correspond to and squeeze each other, and the airbags are made of self-rebounding elastic rubber material.

[0013] Preferably, the front sides of the first movable frame and the second movable frame are both threadedly mounted with fixing buttons for fixing them, and the first movable frame and the second movable frame form a left-right sliding structure with the second sliding grooves provided on the front and rear sides of the welding platform.

[0014] Preferably, a filter box is fixedly installed inside the left side of the welding platform, and the filter box is connected to a small air pump through a pipeline, and a filter box for filtering welding exhaust gas is fixedly installed inside the filter box.

[0015] Preferably, the support roller is rotatably connected and communicated with the filter box, and air outlet holes for discharging cooling air are provided at equal intervals on the outer surface of the support roller.

[0016] Preferably, the negative pressure head and a first slide groove provided on the upper surface of the second movable frame form a sliding structure, and a first magnetic block is fixedly mounted on the upper surface of the negative pressure head.

[0017] Preferably, the first magnetic block and the second magnetic block have opposite magnetic poles and are attracted to each other, and the second magnetic block is fixedly mounted on the lower surface of the fixed plate, and the fixed plate is laterally fixedly mounted above the laser welding head.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the laser welding machine that can assist in deburring adopts a new structural design, and its specific contents are as follows: 1. Use the limiters under the first movable frame and the second movable frame to fix the plate body to be welded, and then use the motor to drive the transmission screw to rotate, so that the transmission screw drives the connecting rod to move forward and backward. At the same time, the motor on the side of the mounting plate drives the grinding roller to rotate, and the grinding roller is used to grind the surface of the plate body to remove burrs and avoid the burrs on the surface of the plate body affecting the subsequent welding quality; Furthermore, the connecting rod squeezes the spaced apart air bags during movement, so that the air in the air bags is ejected from the cleaning nozzle through the first connecting pipe. The air ejected from the cleaning nozzle is used to blow away the debris generated after grinding, thereby preventing the debris from gathering at the welding position.

[0019] 2. During the welding process, the small air pump is turned on. The small air pump generates negative pressure in the negative pressure head through the second connecting pipe, so that the waste gas generated during welding is sucked in by the negative pressure head to prevent the waste gas from spreading and affecting the health of the surrounding workers. The sucked waste gas enters the filter box, and the filter net in the filter box is used to filter the particulate matter in the waste gas; Furthermore, the filtered exhaust gas enters the hollow support roller and is then discharged from the air outlet holes evenly spaced on the outer surface of the support roller. The gas flow during the air outlet is used to dissipate the heat of the plate body during the welding process, thereby preventing the plate body from being deformed due to excessive temperature during welding. Furthermore, during the welding process, the magnetic adsorption effect between the first magnetic block and the second magnetic block is used to connect the fixed plate and the negative pressure head, so that during welding, the laser welding head drives the negative pressure head to move synchronously through the fixed plate when moving (at this time, the negative pressure head slides in the first slide groove), so that the negative pressure head follows the welding position, thereby improving the exhaust gas suction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the first movable frame of the present invention; Figure 3 It is a schematic diagram of the lower surface structure of the first movable frame of the present invention; Figure 4 This is a schematic diagram of the grinding roller structure of the present invention; Figure 5 This is a schematic diagram of the connection between the cleaning nozzle and the air blast bag of the present invention; Figure 6 It is a schematic diagram of the structure of the second movable frame of the present invention; Figure 7 This is a schematic diagram of the connection relationship between the negative pressure head and the filter box of the present invention; Figure 8 This is a schematic diagram of the support roller structure of the present invention; Fig. 9 It is a schematic diagram of the structure of the second magnetic block of the present invention; Fig.10 It is a structural schematic diagram of the connection relationship between the fixing plate and the negative pressure head of the present invention.

[0021] In the figure: 1. support base; 2. welding platform; 3. support roller; 4. plate body; 5. multi-axis robot arm; 6. laser welding head; 7. first movable frame; 8. second movable frame; 801. first slide groove; 9. limiter; 10. fixing button; 11. connecting plate; 12. mounting plate; 13. grinding roller; 14. telescopic spring; 15. second slide groove; 16. cleaning nozzle; 17. air bag; 18. first connecting pipe; 19. transmission screw; 20. guide slide rod; 21. negative pressure head; 22. small air pump; 23. second connecting pipe; 24. filter box; 25. filter screen; 26. air outlet; 27. first magnetic block; 28. second magnetic block; 29. ​​fixing plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figure 1-Figure 4 In order to solve the problem that the burrs on the workpiece surface affect the welding quality during welding with the traditional device, the present embodiment provides the following technical solutions, wherein the surface of the workpiece to be welded is ground by a grinding roller 13 to achieve the purpose of removing the burrs, and specifically discloses: a support base 1 placed horizontally on the ground, a horizontally arranged welding platform 2 is fixedly installed on the upper surface of the support base 1, support rollers 3 evenly distributed at equal intervals are rotatably installed on the inner side above the welding platform 2, and a plate body 4 to be welded is placed above the support rollers 3, a multi-axis mechanical arm 5 is installed on the left side of the welding platform 2, and a laser welding head 6 is installed on the top of the multi-axis mechanical arm 5, a first movable frame 7 and a second movable frame 8 are installed above the welding platform 2, and the first movable frame 7 and the second movable frame 8 are both provided with an arch structure, and the lower surfaces of the first movable frame 7 and the second movable frame 8 are both provided with a telescopic rod structure limiter Device 9, a horizontally arranged connecting plate 11 is installed above the first movable frame 7, and a longitudinally arranged mounting plate 12 is installed below the connecting plate 11, and a grinding roller 13 for grinding burrs at the welding position of the plate body 4 is rotatably installed on the side of the mounting plate 12, a through-type up and down sliding structure is formed between the upper end of the mounting plate 12 and the connecting plate 11, and a telescopic spring 14 is installed on the outside of the upper end of the mounting plate 12, a transmission screw 19 and a guide slide bar 20 are installed through the rear end of the connecting plate 11, and the transmission screw 19 is threadedly connected to the connecting plate 11, and the transmission screw 19 is driven by a motor to be rotatably connected to the first movable frame 7, the front sides of the first movable frame 7 and the second movable frame 8 are both threadedly installed with fixing buttons 10 for fixing them, and the first movable frame 7 and the second movable frame 8 form a left and right sliding structure with the second slide groove 15 opened on the front and rear sides of the welding platform 2.

[0024] When using the device, firstly, the two plate bodies 4 to be welded are spliced ​​and placed above the supporting rollers 3 in the welding platform 2, and then the first movable frame 7 and the second movable frame 8 are slid in the second slide groove 15 opened on the side of the welding platform 2, so that the first movable frame 7 corresponds to the first plate body 4, and the second movable frame 8 corresponds to the second plate body 4, and then the fixing button 10 is tightened to fix the first movable frame 7 and the second movable frame 8, and at the same time, the limiters 9 on the lower surfaces of the first movable frame 7 and the second movable frame 8 are extended to squeeze and limit the plate body 4, and then the motor is turned on to drive the transmission screw 19 to rotate. The connecting plate 11 is moved forward and backward by the transmission screw 19 under the limiting effect of the guide slide bar 20. At this time, the grinding roller 13 is driven to move by the mounting plate 12 connected to the connecting plate 11 (the sliding cooperation telescopic spring 14 between the mounting plate 12 and the connecting plate 11 allows the grinding roller 13 to adapt to the plate body 4 of different thicknesses). At the same time, the motor drives the grinding roller 13 to rotate, so as to achieve the purpose of grinding and deburring the surface of the plate body 4 to prevent the burrs from affecting the subsequent welding quality. After the grinding is completed, the multi-axis robot arm 5 drives the laser welding head 6 to perform welding operations on the plate body 4.

[0025] Example 2: Please refer to Figure 5 In order to solve the problem of debris gathering at the welding position after grinding, the present embodiment provides the following technical solution, which uses a cleaning mechanism to spray airflow to clean the debris after grinding. Specifically, it discloses that: a cleaning mechanism for cleaning the debris after grinding is arranged under the first movable frame 7, and the cleaning mechanism includes a cleaning nozzle 16 fixedly installed on the lower surface of the first movable frame 7 and an airbag 17 fixedly installed on the upper surface of the first movable frame 7, and the airbag 17 is connected to the cleaning nozzle 16 through a first connecting pipe 18, and the airbag 17 is uniformly distributed at equal intervals as a whole, and the airbag 17 and the connecting plate 11 correspond to and squeeze each other, and the airbag 17 is set to a self-rebounding elastic rubber material.

[0026] During the grinding and deburring process, the moving connecting plate 11 squeezes the air bags 17 spaced apart on the upper surface of the first movable frame 7. When the air bags 17 are squeezed, the air inside is ejected from the cleaning nozzle 16 on the lower surface of the first movable frame 7 through the first connecting pipe 18. The airflow ejected from the cleaning nozzle 16 is used to blow away the debris generated after grinding to avoid the accumulation of debris at positions that require subsequent welding.

[0027] Example 3: Please refer to Figure 6-Figure 10In order to solve the problem that welding exhaust gas affects the health of workers during welding with a traditional device, this embodiment provides the following technical solutions, using a negative pressure head 21 to suck in welding exhaust gas to prevent it from spreading. Specifically disclosed is: a negative pressure head 21 for absorbing welding exhaust gas is installed above the second movable frame 8, and a small air pump 22 is fixedly installed on the upper surface of the left side of the welding platform 2, and the small air pump 22 is connected to the negative pressure head 21 through a second connecting pipe 23, and a filter box 24 is fixedly installed inside the left side of the welding platform 2, and the filter box 24 is connected to the small air pump 22 through a pipeline, and the filter box 24 A filter box 24 for filtering welding exhaust gas is fixedly installed inside, the support roller 3 is rotatably connected and communicated with the filter box 24, and the outer surface of the support roller 3 is provided with air outlet holes 26 for discharging cooling air at equal intervals. The negative pressure head 21 and the first slide groove 801 opened on the upper surface of the second movable frame 8 form a sliding structure, and a first magnetic block 27 is fixedly installed on the upper surface of the negative pressure head 21. The magnetic poles of the first magnetic block 27 and the second magnetic block 28 are opposite and adsorbed to each other, and the second magnetic block 28 is fixedly installed on the lower surface of the fixed plate 29, and the fixed plate 29 is laterally fixedly installed above the laser welding head 6.

[0028] Before welding, the multi-axis robot 5 moves the laser welding head 6 at its front end to the top of the negative pressure head 21, so that the second magnetic block 28 on the lower surface of the fixed plate 29 and the first magnetic block 27 on the upper surface of the negative pressure head 21 are adsorbed, and the fixed plate 29 and the negative pressure head 21 are connected. After that, the negative pressure head 21 is driven to move by the fixed plate 29 during the movement of the laser welding head 6 (the negative pressure head 21 slides accordingly in the first slide groove 801 on the upper surface of the second movable frame 8). During welding, the small air pump 22 is turned on. At this time, the small air pump 22 generates negative pressure in the negative pressure head 21 through the second connecting pipe 23, and the exhaust gas generated by welding is sucked in by the negative pressure. The inhaled exhaust gas enters the filter box 24, and the filter screen 25 in the filter box 24 is used to filter the particulate impurities in the exhaust gas. The filtered exhaust gas enters the hollow support roller 3, and then is discharged from the air outlet 26 opened on the surface of the support roller 3, so as to accelerate the flow of surrounding air, thereby dissipating the heat of the plate body 4 and avoiding deformation of the plate body 4 due to excessive temperature.

[0029] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding machine capable of assisting in deburring, comprising a support base (1) placed horizontally on the ground, a welding platform (2) arranged laterally fixedly mounted on the upper surface of the support base (1), characterized in that: Also includes: Support rollers (3) evenly distributed at equal intervals are rotatably mounted on the inner side of the upper part of the welding platform (2), and a plate body (4) to be welded is placed above the support rollers (3). A multi-axis mechanical arm (5) is mounted on the left side of the welding platform (2), and a laser welding head (6) is mounted on the top of the multi-axis mechanical arm (5); A first movable frame (7) and a second movable frame (8) are installed above the welding platform (2), and the first movable frame (7) and the second movable frame (8) are both provided with an arch structure, and a limiter (9) with a telescopic rod structure is installed on the lower surface of the first movable frame (7) and the second movable frame (8); A transversely arranged connecting plate (11) is installed above the first movable frame (7), and a longitudinally arranged mounting plate (12) is installed below the connecting plate (11), and a grinding roller (13) for grinding burrs at the welding position of the plate body (4) is rotatably installed on the side of the mounting plate (12), and a cleaning mechanism for cleaning debris after grinding is provided below the first movable frame (7); A negative pressure head (21) for absorbing welding exhaust gas is installed above the second movable frame (8), and a small air pump (22) is fixedly installed on the left upper surface of the welding platform (2), and the small air pump (22) is connected to the negative pressure head (21) through a second connecting pipe (23).

2. A laser welding machine capable of assisting in deburring according to claim 1, characterized in that: A through-type up-and-down sliding structure is formed between the upper end of the mounting plate (12) and the connecting plate (11), and a telescopic spring (14) is installed outside the upper end of the mounting plate (12).

3. A laser welding machine capable of assisting in deburring according to claim 2, characterized in that: A transmission screw (19) and a guide slide bar (20) are installed through the rear end of the connecting plate (11), and the transmission screw (19) is threadedly connected to the connecting plate (11), and the transmission screw (19) is driven by a motor to be rotationally connected to the first movable frame (7).

4. The laser welding machine capable of assisting in deburring according to claim 3, characterized in that: The cleaning mechanism comprises a cleaning nozzle (16) fixedly mounted on the lower surface of the first movable frame (7) and an air blast bag (17) fixedly mounted on the upper surface of the first movable frame (7), and the air blast bag (17) is connected to the cleaning nozzle (16) via a first connecting pipe (18).

5. The laser welding machine capable of assisting in deburring according to claim 4, characterized in that: The airbags (17) are evenly distributed at equal intervals as a whole, and the airbags (17) and the connecting plate (11) correspond to and squeeze each other, and the airbags (17) are made of a self-rebounding elastic rubber material.

6. The laser welding machine capable of assisting in deburring according to claim 1, characterized in that: The front sides of the first movable frame (7) and the second movable frame (8) are both threadedly mounted with fixing buttons (10) for fixing them, and the first movable frame (7) and the second movable frame (8) form a left-right sliding structure with the second sliding grooves (15) provided on the front and rear sides of the welding platform (2).

7. The laser welding machine capable of assisting in deburring according to claim 1, characterized in that: A filter box (24) is fixedly installed inside the left side of the welding platform (2), and the filter box (24) is connected to the small air pump (22) through a pipeline, and a filter box (24) for filtering welding exhaust gas is fixedly installed inside the filter box (24).

8. The laser welding machine capable of assisting in deburring according to claim 7, characterized in that: The support roller (3) is rotatably connected and communicated with the filter box (24), and air outlet holes (26) for discharging cooling air are provided at equal intervals on the outer surface of the support roller (3).

9. The laser welding machine capable of assisting in deburring according to claim 7, characterized in that: The negative pressure head (21) and a first slide groove (801) provided on the upper surface of the second movable frame (8) form a sliding structure, and a first magnetic block (27) is fixedly mounted on the upper surface of the negative pressure head (21).

10. The laser welding machine capable of assisting in deburring according to claim 9, characterized in that: The first magnetic block (27) and the second magnetic block (28) have opposite magnetic poles and are attracted to each other, and the second magnetic block (28) is fixedly mounted on the lower surface of a fixed plate (29), and the fixed plate (29) is laterally fixedly mounted above the laser welding head (6).

Images