Laser welding machine facilitating welding fume emission

Abstract

The utility model discloses a laser welding machine convenient to discharge welding fume, which comprises a case, a welding table arranged in the case, positioning mechanisms connected to two sides of the welding table, a box body connected to the inside of the case through a lifting mechanism, a laser arranged in the box body, a laser welding gun connected to the laser, and a sleeve rotatably connected to the bottom of the box body through a swivel bearing. The laser welding gun penetrates out of the casing pipe, a driving mechanism for driving the casing pipe to rotate is arranged at the bottom of the box body, the casing pipe is connected with an extending plate, the extending plate is connected with an air feeding pipe, the lower end of the air feeding pipe is connected with an air nozzle facing a gun head of the laser welding gun, the upper end of the air feeding pipe is connected with a hose, and one side of the machine box is connected with an induced draft fan and an exhaust fan. The induced draft fan is connected with an air inlet pipe, the air inlet pipe is connected with the hose, and the exhaust fan is connected with an air outlet pipe. After welding is completed, the driving mechanism drives the sleeve to rotate, the air nozzle can be driven to do arc-shaped motion along the welding position, air is blown to the welding position, and the workpiece is rapidly cooled.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding machines, in particular to a laser welding machine which is convenient for exhausting welding smoke. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding is one of the important aspects of the application of laser material processing technology. In the production of workpieces, laser welding is often performed on the workpieces. A large amount of smoke will appear during the welding process, which will affect the working environment and cause certain harm to the workers. Moreover, after the welding process, the cooling speed of the workpiece is slow. The Chinese utility model patent CN216938946U discloses a smoke exhaust device for laser welding. It can be seen from its specification that the smoke exhaust device for laser welding is used in conjunction with an air pump, an air suction hose, a water tank, a cylinder, a push plate valve and a nozzle. By turning on the air pump and using the air suction hose, the smoke generated by welding can be absorbed. At the same time, the cylinder is turned on to use the push plate to push the water inside the water tank, so that the water inside the water tank breaks through the valve by extrusion, and is sprayed to the surface of the workpiece through the nozzle to water-cool the workpiece, thereby achieving the effects of dust absorption and water cooling during the processing. However, the smoke exhaust device has the following problems: the workpiece is cooled quickly by water cooling, and then water is sprayed on the workpiece, the water adheres to the workpiece, and when the workpiece is taken out, the workpiece must be dried to prevent rust, and the water will also spread in the installation box and corrode the components in the installation box. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a laser welding machine that is convenient for exhausting welding smoke, so as to solve the problems mentioned in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A laser welding machine that is convenient for exhausting welding smoke comprises a chassis, a welding table is arranged in the chassis, both sides of the welding table are connected with positioning mechanisms, a box body is connected in the chassis through a lifting mechanism, the box body is located above the welding table, a laser is arranged in the box body, a laser welding gun is connected to the laser, a sleeve is rotatably connected to the bottom of the box body through a rotating bearing, the laser welding gun passes through the sleeve, a driving mechanism for driving the sleeve to rotate is arranged at the bottom of the box body, an extension plate is connected to the sleeve, an air supply pipe is connected to the extension plate, a wind nozzle facing the gun head of the laser welding gun is connected to the lower end of the air supply pipe, a hose is connected to the upper end of the air supply pipe, an induced draft fan and an exhaust fan are connected to one side of the chassis, an air inlet pipe is connected to the induced draft fan, the air inlet pipe is connected to the hose, and an air outlet pipe is connected to the exhaust fan.

[0006] Preferably, the positioning mechanism includes an L-shaped plate connected to both sides of the welding table, a first cylinder installed on the L-shaped plate, two first guide rods connected between the two L-shaped plates, and two clamps slidably connected to the two first guide rods, and the telescopic ends of the two first cylinders are respectively connected to the two clamps.

[0007] Through the above technical solution, the two workpieces to be welded are placed on the welding table, and then the two first cylinders are controlled to extend to drive the two clamping plates to move relative to each other, so as to position the two workpieces so that the welding positions of the two workpieces are in close contact.

[0008] Preferably, the lifting mechanism includes a second cylinder installed on the top of the chassis, two second guide rods slidably connected to the top of the chassis, the telescopic end of the second cylinder is connected to the top of the box, and the lower end of the second guide rod is connected to the top of the box.

[0009] Through the above technical solution, the second cylinder is controlled to extend to drive the box body to descend, and the second guide rod plays a role in stabilizing the movement of the box body.

[0010] Preferably, the driving mechanism includes an annular gear fixedly connected to the outer wall of the sleeve, a motor arranged at the bottom of the box, a transmission shaft connected to the motor through a coupling, and a gear connected to the transmission shaft, and the gear is meshed with the annular gear.

[0011] Through the above technical solution, the motor is started to drive the transmission shaft to rotate, and the transmission shaft drives the ring gear to rotate through the gear, thereby driving the sleeve to rotate.

[0012] Preferably, the air inlet pipe is connected to a one-way valve, through which only air is allowed to enter the chassis from outside the chassis, and the air outlet pipe is provided with a control valve for controlling the opening and closing of the air outlet pipe.

[0013] Through the above technical solution, the induced draft fan introduces fresh air into the chassis to ensure normal welding, while the exhaust fan draws the generated smoke out of the chassis.

[0014] Preferably, a control box is provided at the lower part of the chassis, a controller is provided in the control box, a control program is preset in the controller, and the first cylinder, the second cylinder, the motor, the control valve, the induced draft fan, and the exhaust fan are all electrically connected to the controller.

[0015] Through the above technical solution, a control program is preset in the controller to control each component to work in an orderly manner.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The workpiece is placed on the welding table and welded by a laser welding gun. After welding is completed, the sleeve is driven to rotate by the driving mechanism, and the sleeve drives the extension plate to rotate, thereby driving the nozzle to move in an arc along the welding point, and blowing air to the welding point in front of the workpiece through the nozzle. After the sleeve rotates half a circle, the sleeve is driven to rotate in the opposite direction, and the nozzle blows air to the welding point behind the workpiece to quickly cool the workpiece.

[0018] (2) Fresh air is delivered into the chassis through the induced draft fan to ensure the completion of welding. At the same time, the workpiece is cooled by air through the air nozzle, realizing the simultaneous delivery of air and cooling of the workpiece, thereby improving the efficiency of the entire welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is a top view of the gear and ring gear;

[0022] Figure 4 is a top view of the positioning mechanism;

[0023] In the figure: 1-chassis, 2-welding table, 3-box, 4-laser, 5-laser welding gun, 6-casing, 7-extension plate, 8-air supply pipe, 9-nozzle, 10-hose, 11-induced draft fan, 12-exhaust fan, 13-L-type plate, 14-first cylinder, 15-first guide rod, 16-clamp, 17-second cylinder, 18-second guide rod, 19-ring gear, 20-motor, 21-gear, 22-check valve, 23-control valve, 24-control box. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] See also Figure 1 , Figure 2A laser welding machine that is convenient for exhausting welding smoke includes a chassis 1, a welding table 2 is arranged in the chassis 1, and positioning mechanisms are connected to both sides of the welding table 2. The positioning mechanisms include L-shaped plates 13 connected to both sides of the welding table, a first cylinder 14 installed on the L-shaped plate, two first guide rods 15 connected between the two L-shaped plates, and two clamping plates 16 slidably connected to the two first guide rods. The telescopic ends of the two first cylinders 14 are respectively connected to the two clamping plates 16.

[0027] The chassis 1 is connected to a box body 3 via a lifting mechanism, and the box body 3 is located above the welding table 2. The lifting mechanism includes a second cylinder 17 installed on the top of the chassis, and two second guide rods 18 slidably connected to the top of the chassis. The telescopic end of the second cylinder 17 is connected to the top of the box body 3, and the lower end of the second guide rod 18 is connected to the top of the box body 3.

[0028] The box 3 is provided with a laser 4, and the laser 4 is connected to a laser welding gun 5. The laser 4 and the laser welding gun 5 are both prior art and can be purchased on the market, and the utility model will not be described in detail. The bottom of the box 3 is rotatably connected to a sleeve 6 through a rotary bearing, and the laser welding gun 5 passes through the sleeve 6. The bottom of the box 3 is provided with a driving mechanism for driving the sleeve 6 to rotate, such as Figure 2 and Figure 3 As shown, the driving mechanism includes a ring gear 19 fixedly connected to the outer wall of the sleeve, a motor 20 arranged at the bottom of the box, a transmission shaft connected to the motor through a coupling, and a gear 21 connected to the transmission shaft, and the gear 21 is meshed with the ring gear 19. The sleeve 6 is connected to an extension plate 7, and the extension plate 7 is connected to an air supply pipe 8. The lower end of the air supply pipe 8 is connected to a nozzle 9 facing the laser welding gun head, and the upper end of the air supply pipe 8 is connected to a hose 10. One side of the chassis 1 is connected to an induced draft fan 11 and an exhaust fan 12. The induced draft fan 11 is connected to an air inlet pipe, and the air inlet pipe is connected to the hose 10. The exhaust fan 12 is connected to an air outlet pipe, and the air outlet pipe is connected to an external fume treatment device.

[0029] A control box 24 is provided at the lower part of the chassis 1, and a controller is provided in the control box. A control program is preset in the controller. The first cylinder 14, the second cylinder 17, the motor 20, the induced draft fan 11, and the exhaust fan 12 are all electrically connected to the controller, and each component is controlled by the control program to work in an orderly manner.

[0030] The working principle of this embodiment is:

[0031] Place two workpieces to be welded on the welding table 2, control the two first cylinders 14 to extend, drive the two clamps 16 to move relative to each other, so as to position the two workpieces so that the welding positions of the two workpieces are in close contact, then control the second cylinder 17 to extend, drive the box 3 to descend, and weld the workpieces through the laser welding gun 5. After welding is completed, start the motor 20 to drive the transmission shaft to rotate, and the transmission shaft drives the ring gear 19 to rotate through the gear 21, thereby driving the sleeve 6 to rotate, and the sleeve 6 drives the extension plate 7 to rotate, thereby driving the nozzle 9 to make an arc movement along the welding position, and at the same time, the induced draft fan 11 sends fresh air into the chassis 1, and blows air to the welding position in front of the workpiece through the nozzle 9. After the sleeve 6 rotates half a circle, the motor 20 reverses and drives the sleeve 6 to rotate in the opposite direction, and blows air to the welding position behind the workpiece through the nozzle 9 to cool the workpiece quickly. It should be noted that when controlling the motor to rotate, the rotation stroke of the motor can be pre-set to be half a circle. The smoke generated by welding is extracted by the exhaust fan 12 and sent to the external smoke treatment equipment for treatment.

[0032] Example 2

[0033] On the basis of Example 1, the air inlet pipe is connected with a one-way valve 22, through which only air is allowed to enter the chassis from outside the chassis, and the air outlet pipe is provided with a control valve 23, which is electrically connected to the controller and is used to control the opening and closing of the air outlet pipe. The induced draft fan introduces fresh air into the chassis to ensure normal welding, and the exhaust fan extracts the generated smoke to the outside of the chassis.

[0034] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0035] Although the 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 that is convenient for exhausting welding smoke, characterized in that: The invention comprises a chassis (1), wherein a welding table (2) is arranged in the chassis (1), and positioning mechanisms are connected to both sides of the welding table (2). A box body (3) is connected to the chassis (1) via a lifting mechanism, and the box body (3) is located above the welding table (2). A laser (4) is arranged in the box body (3), and a laser welding gun (5) is connected to the laser (4). A sleeve (6) is rotatably connected to the bottom of the box body (3) via a rotating bearing, and the laser welding gun (5) passes through the sleeve (6). The bottom of the box body (3) is provided with A driving mechanism for driving the sleeve (6) to rotate, the sleeve (6) is connected to an extension plate (7), the extension plate (7) is connected to an air supply pipe (8), the lower end of the air supply pipe (8) is connected to an air nozzle (9) facing the head of the laser welding gun, the upper end of the air supply pipe (8) is connected to a hose (10), one side of the chassis (1) is connected to an induced draft fan (11) and an exhaust fan (12), the induced draft fan (11) is connected to an air inlet pipe, the air inlet pipe is connected to the hose (10), and the exhaust fan (12) is connected to an air outlet pipe.

2. A laser welding machine for facilitating welding fume emission according to claim 1, characterized in that: The positioning mechanism comprises an L-shaped plate (13) connected to both sides of the welding table, a first cylinder (14) installed on the L-shaped plate, two first guide rods (15) connected between the two L-shaped plates, and two clamping plates (16) slidably connected to the two first guide rods, and the telescopic ends of the two first cylinders (14) are respectively connected to the two clamping plates (16).

3. A laser welding machine that facilitates welding fume emission according to claim 2, characterized in that: The lifting mechanism comprises a second cylinder (17) installed on the top of the chassis, and two second guide rods (18) slidably connected to the top of the chassis, the telescopic end of the second cylinder (17) is connected to the top of the box body (3), and the lower end of the second guide rod (18) is connected to the top of the box body (3).

4. A laser welding machine that facilitates welding fume emission according to claim 3, characterized in that: The driving mechanism comprises a ring gear (19) fixedly connected to the outer wall of the sleeve, a motor (20) arranged at the bottom of the box, a transmission shaft connected to the motor through a coupling, and a gear (21) connected to the transmission shaft, wherein the gear (21) meshes with the ring gear (19).

5. A laser welding machine that facilitates welding fume emission according to claim 4, characterized in that: The air inlet pipe is connected to a one-way valve (22), through which only air is allowed to enter the chassis from outside the chassis. The air outlet pipe is provided with a control valve (23) for controlling the opening and closing of the air outlet pipe.

6. A laser welding machine for facilitating welding fume emission according to claim 5, characterized in that: A control box (24) is provided at the bottom of the chassis (1), and a controller is provided in the control box. The first cylinder (14), the second cylinder (17), the motor (20), the control valve (23), the induced draft fan (11), and the exhaust fan (12) are all electrically connected to the controller.

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