Guide rail moving type intelligent laser welding machine

Abstract

The invention discloses a guide rail moving type intelligent laser welding machine, and relates to the technical field of intelligent laser welding tools, the guide rail moving type intelligent laser welding machine comprises a portal frame, moving mechanisms are mounted on two sides of the bottom end and the top end of the portal frame, and a mechanical arm is mounted at the lower end of the top moving mechanism; through cooperation of the gear, the rack and the pressing plate, a to-be-welded object is conveniently extruded downwards after positioning, then deformation of the welding position of the object is avoided, and the product percent of pass is increased; a direct current motor and a lead screw are replaced by the linear motor for transmission, so that the track runs more smoothly, the motion trail is more accurate, and the running deviation caused by motor reaction is reduced; through cooperation of an air pump and a smoke suction opening, smoke and metal particles generated in the welding process can be conveniently sucked into a treatment box, and the guiding effect of a positioning lamp on a laser welding head caused by the smoke is reduced; finally, the problems that in the welding process, smoke influences the positioning effect, the welding position deforms after positioning, and deviation exists in the direct-current motor reaction are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent laser welding tools, and in particular to a guide rail movable intelligent laser welding machine. Background Art

[0002] In modern manufacturing, welding, as a key processing technology, is widely used in many fields such as automobile manufacturing, aerospace, electronic equipment, and machinery manufacturing. Although traditional welding methods, such as arc welding and resistance welding, have long played an important role in the past, they have gradually exposed a series of limitations with the continuous improvement of product precision and quality requirements and the urgent need for production efficiency.

[0003] Most welding objects will deform after being placed on the welding table, causing deformation at the welding point and reducing the product qualification rate. In addition, the traditional DC motor-driven operation method has a long reaction time of the DC motor, which causes the machine to start frequently, resulting in deviations in the welding position positioning. In addition, smoke is generated during the welding process, which seriously affects the guidance effect of the positioning light on the laser welding head. Therefore, the above problems need to be solved. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a rail-movable intelligent laser welding machine.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a guide rail movable intelligent laser welding machine, including a gantry, wherein movable mechanisms are installed on both sides of the bottom end and the top end of the gantry, a robotic arm is installed at the lower end of the movable mechanism at the top end, a positioning mechanism is installed directly below the robotic arm, and a smoke removal mechanism is installed on one side of the robotic arm.

[0006] Preferably, the moving mechanism includes a guide rail, a slider is slidably connected to the guide rail, and a linear motor is installed on the outer side of the slider.

[0007] Preferably, the robotic arm includes a first cylinder installed on the bottom surface of the upper end slider, a first mounting block is installed on the telescopic end of the first cylinder, a first motor is installed on the top surface of the first mounting block, the first motor output shaft passes through the first mounting block, and a second mounting block is installed at the lower end of the first motor output shaft.

[0008] Preferably, a second motor is mounted on one side of the second mounting block, an output shaft of the second motor passes through the second mounting block, and a mounting frame is mounted on the output shaft of the second motor.

[0009] Preferably, a second cylinder is installed at the lower end of the inner top of the installation frame, a laser welding head is installed at the telescopic end of the second cylinder, a positioning light is installed obliquely at the lower end of the other side of the installation frame, and a fixing block is fixed to the middle of the other side of the installation frame.

[0010] Preferably, the smoke removal mechanism includes a smoke exhaust pipe installed in the fixed block, a dust suction port is installed at the bottom end of the smoke exhaust pipe, and the other end of the smoke exhaust pipe is connected to a processing box, an air pump is installed on one side of the processing box, and the processing box and the air pump are installed on the top surface of the upper guide rail.

[0011] Preferably, a first filter screen and a second filter screen are plugged into the processing box, and the filtering holes of the second filter screen are smaller than the filtering holes of the first filter screen.

[0012] Preferably, the positioning mechanism includes a positioning box installed at the lower end of the robotic arm, a third motor is installed on one side of the interior of the positioning box, a first bidirectional screw is installed at the output end of the third motor through a coupling, and two first placement plates are threadedly connected at both ends of the first bidirectional screw.

[0013] Preferably, a second bidirectional screw rod is provided at the lower end of the first bidirectional screw rod, a fourth motor is installed at one end of the second bidirectional screw rod through a coupling, and the fourth motor is installed on the inner wall of the positioning box.

[0014] Preferably, two second placement plates are threadedly connected to the second bidirectional screw rod, a limit plate is slidably installed on the upper end of the second placement plate, a rack is installed on one side of the limit plate, and a one-way screw rod is rotatably installed on one side of the top surface of the second placement plate, the upper end of the one-way screw rod is threadedly connected to a pressure plate, and the bottom end of the one-way screw rod is fixedly connected to a gear, the gear and the rack are engaged for transmission, a guide rod passes through the other end of the pressure plate, and the guide rod is installed on the other side of the top surface of the second placement plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention facilitates downward squeezing of the object to be welded after positioning through the cooperation of gears, racks and pressure plates, thereby avoiding deformation of the object at the welding point and improving the product qualification rate; and then replaces the DC motor and screw drive with a linear motor to make the track operation smoother, the motion trajectory more precise, and reduce the operation deviation caused by the motor reaction; and then, through the cooperation of the air pump and the smoke outlet, it is convenient to suck the smoke and metal particles generated during the welding process into the processing box, reducing the guiding effect of the positioning lamp on the laser welding head caused by the smoke; finally, it solves the problems of smoke affecting the positioning effect during welding, deformation of the welding point after positioning, and deviation in the DC motor reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention;

[0018] Figure 2 A bottom view of the overall three-dimensional structure of the device of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the mobile mechanism of the present invention;

[0020] Figure 4 It is a schematic structural diagram of the smoke removal mechanism of the present invention;

[0021] Figure 5 Schematic diagram of the cross-sectional structure of the smoke removal mechanism of the present invention;

[0022] Figure 6 This is a schematic structural diagram of the welding arm of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the positioning mechanism of the present invention;

[0024] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure of part A in the middle.

[0025] Serial numbers in the figure: 1. Gantry; 2. Guide rail; 3. Slider; 4. Linear motor; 5. First cylinder; 6. First mounting block; 7. First motor; 8. Second mounting block; 9. Second motor; 10. Mounting frame; 11. Fixing block; 12. Second cylinder; 13. Laser welding head; 14. Positioning light; 15. Dust suction port; 16. Processing box; 17. Air pump; 18. First filter; 19. Second filter; 20. Third motor; 21. First bidirectional lead screw; 22. First placement plate; 23. Fourth motor; 24. Second bidirectional lead screw; 25. Second placement plate; 26. Limit plate; 27. Rack; 28. Gear; 29. ​​One-way lead screw; 30. Press plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1: See Figure 1-8The present invention relates to a guide rail movable intelligent laser welding machine, comprising a gantry 1, through which a moving mechanism is easily installed; moving mechanisms are installed on both sides and the top of the bottom end of the gantry 1, and a robotic arm is installed at the lower end of the top moving mechanism, which facilitates the movement of the laser welding head 13 through the robotic arm; a positioning mechanism is installed just below the robotic arm, and a smoke removal mechanism is installed on one side of the robotic arm, and the mobile mechanism comprises a guide rail 2, which facilitates the cooperation with the slider 3 through the guide rail 2; a slider 3 is slidably connected to the guide rail 2, which facilitates the smooth sliding of the guide rail 2 through the slider 3; a linear motor 4 is installed on the outside of the slider 3, which facilitates the sliding of the slider 3 on the guide rail 2 through the linear motor 4; the robotic arm comprises a first cylinder 5 installed on the bottom surface of the upper end slider 3, which facilitates the change of height of the robotic arm through the first cylinder 5; a first mounting block 6 is installed at the telescopic end of the first cylinder 5, which facilitates the installation of the first motor 7 through the first mounting block 6; the first mounting A first motor 7 is installed on the top surface of block 6, which can easily drive the second mounting block 8 to rotate through the first motor 7; a second mounting block 8 is installed on the output end of the first motor 7, which can facilitate the installation of a second motor 9 through the second mounting block 8; the second mounting block 8 is located at the lower end of the first mounting block 6, and a second motor 9 is installed on one side of the second mounting block 8, which can facilitate the rotation of the mounting frame 10 through the second motor 9; a mounting frame 10 is installed on the output end of the second motor 9, and the mounting frame 10 is located on the other side of the second mounting block 8, and a second cylinder 12 is installed at the lower end of the top of the mounting frame 10, which can facilitate the change of the height of the laser welding head 13 through the second cylinder 12; a laser welding head 13 is installed at the telescopic end of the second cylinder 12, and a fixed block 11 is fixedly connected to the middle part of one side of the mounting frame 10, which can facilitate the cooperation with the smoke removal mechanism through the fixed block 11; a positioning light 14 is obliquely installed at the lower end of the other side of the mounting frame 10, which can facilitate the guidance of the laser welding head 13 for precise welding.

[0028] Example 2: The technical solution is basically the same as that of Example 1, except that Figure 4 、 Figure 5 、 Figure 6 As shown, the smoke removal mechanism includes a smoke exhaust pipe installed in the fixed block 11, and a dust suction port 15 is installed at the bottom end of the smoke exhaust pipe, through which the smoke and metal particles generated during the welding process are adsorbed; the dust suction port 15 is used to discharge the smoke generated during the welding process; and the other end of the smoke exhaust pipe is connected to a processing box 16, through which the metal particles are adsorbed and processed; an air pump 17 is installed on one side of the processing box 16, through which a strong suction force is generated; a first filter screen 18 and a second filter screen 19 are plugged into the processing box 16, through which the first filter screen 18 and the second filter screen 19 are used for double-layer filtration; the filter hole of the second filter screen 19 is smaller than the filter hole of the first filter screen 18.

[0029] Example 3: The technical solution is basically the same as that of Example 1, except that Figure 2 、 Figure 7 、 Figure 8As shown, the positioning mechanism includes a third motor 20 installed at the lower end of the robotic arm, which is convenient for driving the first bidirectional screw rod 21 to rotate through the third motor 20; the output end of the third motor 20 is installed with a first bidirectional screw rod 21 through a coupling, which is convenient for driving the first placement plate 22 to move inwardly through the first bidirectional screw rod 21; two first placement plates 22 are threadedly connected at both ends of the first bidirectional screw rod 21, which is convenient for placing the object to be welded through the first placement plate 22; a second bidirectional screw rod 24 is provided at the lower end of the first bidirectional screw rod 21, which is convenient for driving the second placement plate 25 to rotate through the second bidirectional screw rod 24; a fourth motor 23 is installed at one end of the second bidirectional screw rod 24 through a coupling, which is convenient for driving the second bidirectional screw rod 24 to rotate through the fourth motor 23; the fourth motor The output end of the machine 23 is connected to the second bidirectional screw 24 through a coupling. Two second placement plates 25 are threadedly connected to the second bidirectional screw 24. A limit plate 26 is slidably installed on the upper end of the second placement plate 25, which is convenient for cooperating with the rack 27 through the limit plate 26; a rack 27 is installed on one side of the limit plate 26, which is convenient for cooperating with the gear 28 through the rack 27; and a one-way screw 29 is rotatably installed on one side of the top surface of the second placement plate 25, which is convenient for driving the pressure plate 30 to rise and fall through the one-way screw 29; the upper end of the one-way screw 29 is threadedly connected to the pressure plate 30, which is convenient for downward positioning of the object to be welded through the pressure plate 30; and the bottom end of the one-way screw 29 is fixed with a gear 28, which is convenient for driving the one-way screw 29 to rotate through the gear 28; the gear 28 and the rack 27 are engaged for transmission.

[0030] Working principle: In this embodiment, the present invention also proposes a method for using a guide rail mobile intelligent laser welding machine, comprising the following steps:

[0031] Step 1: Turn on the power supply and place two objects to be processed on the first placement plates 22 on both sides respectively. Then start the third motor 20, which drives the first bidirectional screw 21 to rotate, thereby driving the two first placement plates 22 threadedly connected to the first bidirectional screw 21 to move inward. The two first placement plates 22 stop when the inner distance between the two first placement plates 22 is less than the length of the second placement plate 25.

[0032] Step 2: Start the fourth motor 23, which drives the second bidirectional screw 24 to rotate. The second bidirectional screw 24 drives the two second placement plates 25 to move inward. During the movement, the two ends of the object to be processed will abut against the limit plates 26, and then the limit plates 26 are pushed outward. During the sliding process of the limit plates 26, the rack 27 on one side is meshed with the gear 28 for transmission, thereby driving the gear 28 to rotate. The gear 28 drives the one-way screw 29 to rotate. Through the cooperation of the sliding rod on the other side, the pressing plate 30 moves downward and abuts against the object to be welded, pressing the object to be welded downward to prevent the first placement plate 22 from continuously moving inward during the positioning process, causing the two objects to be welded to bulge upward after abutting;

[0033] Step 3: Start the linear motor 4, and drive the slider 3 to slide on the guide rail 2 through the bottom linear motor 4. The linear motor 4 has the advantages of high speed, high precision, low noise and high reliability. At the same time, the linear motor 4 has no mechanical contact during the movement process, and the transmission force is generated in the air gap. There is no other friction except the linear motor 4 and the guide rail 2, so it can reduce the motion inertia and improve the response speed and sensitivity of the equipment. After the linear motors 4 on both sides drive the gantry 1 to move to the appropriate position, the top linear motor 4 drives the first cylinder 5 to move to the appropriate position;

[0034] Step 4: The first cylinder 5 is started, driving the first mounting block 6 to rise and fall. At the same time, the first motor 7 drives the second mounting block 8 to rotate. The second mounting block 8 drives the mounting frame 10 to rotate through the second motor 9, and then determines whether it is longitudinal welding or transverse welding. After the determination is made, the positioning light 14 is turned on, the welding point is found by calculation, and ultraviolet light is projected. Then, the second cylinder 12 drives the laser welding head 13 to rise and fall, and welding is performed close to the welding point according to the guidance of the positioning light 14;

[0035] Step 5. During the welding process, a large amount of smoke and metal particles will be generated. At this time, the air pump 17 is turned on to generate strong suction, and the smoke and metal particles are sucked into the processing box 16 through the suction port 15. After passing through the first filter 18, they are adsorbed on the second filter 19. The smoke is processed in the processing box 16. After the processing is completed, the device is reset and the power is turned off. Then the first filter 18 and the second filter 19 can be pulled out to clean the metal particles inside, and then they can be installed back into the processing box 16.

[0036] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A guide rail movable intelligent laser welding machine, comprising a gantry (1), characterized in that: The gantry (1) is provided with moving mechanisms on both sides of the bottom end and the top end, a mechanical arm is provided at the bottom end of the moving mechanism at the top end, a positioning mechanism is provided directly below the mechanical arm, and a smoke removal mechanism is provided on one side of the mechanical arm, the moving mechanism comprises a guide rail (2), a slider (3) is slidably connected to the guide rail (2), and a linear motor (4) is provided on the outside of the slider (3).

2. The guide rail movable intelligent laser welding machine according to claim 1, characterized in that: The robotic arm comprises a first cylinder (5) mounted on the bottom surface of an upper end slider (3), a first mounting block (6) being mounted on the telescopic end of the first cylinder (5), a first motor (7) being mounted on the top surface of the first mounting block (6), an output shaft of the first motor (7) passing through the first mounting block (6), and a second mounting block (8) being mounted on the lower end of the output shaft of the first motor (7).

3. The guide rail movable intelligent laser welding machine according to claim 2, characterized in that: A second motor (9) is installed on one side of the second mounting block (8), an output shaft of the second motor (9) passes through the second mounting block (8), and a mounting frame (10) is installed on the output shaft of the second motor (9).

4. The guide rail movable intelligent laser welding machine according to claim 3, characterized in that: A second cylinder (12) is installed at the lower end of the inner top of the installation frame (10), a laser welding head (13) is installed at the telescopic end of the second cylinder (12), a positioning lamp (14) is obliquely installed at the lower end of the other side of the installation frame (10), and a fixing block (11) is fixed to the middle of the other side of the installation frame (10).

5. The guide rail movable intelligent laser welding machine according to claim 1, characterized in that: The smoke removal mechanism includes a smoke exhaust pipe installed in a fixed block (11), a dust suction port (15) is installed at the bottom end of the smoke exhaust pipe, and the other end of the smoke exhaust pipe is connected to a processing box (16), an air pump (17) is installed on one side of the processing box (16), and the processing box (16) and the air pump (17) are installed on the top surface of the upper end guide rail (2).

6. The guide rail movable intelligent laser welding machine according to claim 5, characterized in that: A first filter screen (18) and a second filter screen (19) are plugged into the processing box (16), and the filtering holes of the second filter screen (19) are smaller than the filtering holes of the first filter screen (18).

7. The rail-movable intelligent laser welding machine according to claim 1, characterized in that: The positioning mechanism comprises a positioning box installed at the lower end of the mechanical arm, a third motor (20) is installed on one side of the interior of the positioning box, a first bidirectional screw rod (21) is installed at the output end of the third motor (20) through a coupling, and two first placement plates (22) are threadedly connected at both ends of the first bidirectional screw rod (21).

8. The rail-movable intelligent laser welding machine according to claim 7, characterized in that: A second bidirectional screw rod (24) is provided at the lower end of the first bidirectional screw rod (21), and a fourth motor (23) is installed at one end of the second bidirectional screw rod (24) through a coupling. The fourth motor (23) is installed on the inner wall of the positioning box.

9. The guide rail movable intelligent laser welding machine according to claim 8, characterized in that: Two second placement plates (25) are threadedly connected to the second bidirectional screw rod (24), and a limit plate (26) is slidably installed on the upper end of the second placement plate (25). A rack (27) is installed on one side of the limit plate (26), and a one-way screw rod (29) is rotatably installed on one side of the top surface of the second placement plate (25). The upper end of the one-way screw rod (29) is threadedly connected to a pressure plate (30), and the bottom end of the one-way screw rod (29) is fixed with a gear (28), and the gear (28) is meshed with the rack (27) for transmission. The other end of the pressure plate (30) is penetrated by a guide rod, and the guide rod is installed on the other side of the top surface of the second placement plate (25).

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