Shielding gas blowing mechanism and laser welding machine

Abstract

The utility model discloses a shielding gas blowing mechanism and laser welding machine relates to laser welding technical field, including outer cylinder, inner cylinder subassembly and flow equalizing subassembly, the inner side of outer cylinder is connected with the inner cylinder subassembly through joining block, and inner cylinder subassembly includes inner cylinder, the inside of inner cylinder is equipped with the flow equalizing subassembly, and the flow equalizing subassembly is equipped with the flow equalizing subassembly. And the flow equalizing assembly comprises a micro motor, a rotating shaft, a driving gear, a driven gear ring, a connecting upper ring and stirring blades. According to the shielding gas blowing mechanism and the laser welding machine, a driving gear is conveniently driven to rotate through a micro motor and a rotating shaft, and the driving gear is in meshed connection with a driven gear ring, so that the driven gear ring, a connecting upper ring and stirring blades are conveniently driven to rotate; the stirring blades can rotate to disperse the protective gas injected into the inner barrel and send the protective gas into the flow guide channel through the evenly-formed ventilation openings, the flow equalizing effect is achieved, and then the protective gas in the flow guide channel can flow downwards along the guide barrel and is evenly guided through the flow guide plate.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding, in particular to a protective gas blowing mechanism and a laser welding machine. Background Technique

[0002] Laser welding is an efficient and precise welding method that uses a laser beam with a high energy density as a heat source. During the laser welding process, the protective gas plays a very important role. During the laser welding process, it is necessary to blow the protective gas on the surface of the weld. The protective gas can not only remove the plasma generated by the irradiated part of the beam, improve the melting characteristics, improve the weld quality, reduce the splash of welding slag, but also prevent the metal from oxidizing and blackening to a certain extent during the welding process.

[0003] The protective gas blowing mechanism of the existing laser welding machine often directly uses a conduit to blow the protective gas to the contact point between the welding head and the metal workpiece. This method makes the blowing of the protective gas uneven, and then makes the welding quality of the metal workpiece unstable and the surface consistency poor, which is difficult to meet the welding quality requirements of the metal workpiece.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a protective gas blowing mechanism and a laser welding machine are proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a protective gas blowing mechanism and a laser welding machine to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A protective gas blowing mechanism includes an outer cylinder, an inner cylinder assembly and a flow equalizing assembly. The inner side of the outer cylinder is connected with the inner cylinder assembly through an adapter block, and the inner cylinder assembly includes an inner cylinder body. A flow equalizing assembly is installed inside the inner cylinder body, and the flow equalizing assembly includes a micro motor, a rotating shaft, a driving gear, a driven toothed ring, a connecting upper ring and a stirring blade. The rotating shaft is arranged on the upper side of the micro motor, and a driving gear is fixed on the outer part of the rotating shaft. A driven toothed ring is meshed on one side of the driving gear, and the driven toothed ring is rotatably connected with the inner cylinder body. A connecting upper ring is integrally fixed on the upper side of the driven toothed ring, and a stirring blade is fixed on the outer side of the connecting upper ring. A guiding cylinder is fixed below the inner cylinder body, and a diversion channel is arranged between the guiding cylinder and the outer cylinder. And the outer wall of the lower part of the guiding cylinder is evenly fixed with diversion plates in a circumferential radial shape.

[0007] Further, the inner cylinder assembly further includes a hollow inner ring and a ventilation port. A hollow inner ring is integrally fixed in the middle of the inner cylinder body, and ventilation ports are evenly arranged on the outer wall of the inner cylinder body.

[0008] Further, the hollow inner ring, the inner cylinder body and the outer cylinder are of a concentric circular structure, and the inner cylinder body is mutually communicated with the diversion channel through the ventilation port.

[0009] Furthermore, the upper part of the guiding cylinder is in a funnel-shaped structure, and the top view of the diversion channel outside the guiding cylinder is in an annular structure.

[0010] Furthermore, an upper cover plate is installed above the outer cylinder and the inner cylinder. A through groove is provided in the middle of the upper cover plate, and an air inlet joint is connected to one side above the upper cover plate.

[0011] Furthermore, a fixing block is connected to the outer side below the outer cylinder. A micro telescopic rod is installed above the fixing block, and a connecting piece is installed above the micro telescopic rod.

[0012] A laser welding machine, the laser welding machine includes a mounting plate and a laser welding head. The laser welding head is installed on one side of the mounting plate. The mounting plate is bolted to the connecting piece, and the laser welding head is located directly above the outer cylinder.

[0013] The utility model provides a protective gas blowing mechanism and a laser welding machine, which have the following beneficial effects:

[0014] The utility model is provided with a flow equalizing component. The air inlet joint is externally connected to a protective gas charging device for sending the protective gas into the interior of the inner cylinder. The micro motor and the rotating shaft are used to drive the rotation of the driving gear. The driving gear is meshed with the passive gear ring to drive the rotation of the passive gear ring, the connecting upper ring and the stirring blades, so that the stirring blades can rotate to disperse the protective gas injected into the inner cylinder, achieving a flow equalizing effect.

[0015] The utility model is provided with an inner cylinder component. The ventilation openings are provided so that the dispersed protective gas can be sent into the interior of the diversion channel through the uniformly arranged ventilation openings. The protective gas inside the diversion channel can flow downward along the guiding cylinder and be uniformly guided by the diversion plate, and finally be uniformly ejected through the air outlet at the bottom of the diversion channel, so as to provide uniform protective gas to the part to be welded of the workpiece, ensuring the welding quality and surface consistency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded structural schematic diagram of the outer cylinder of a protective gas blowing mechanism and a laser welding machine according to the utility model;

[0017] Figure 2 is a semi-sectional structural schematic diagram of the interior of the outer cylinder of a protective gas blowing mechanism and a laser welding machine according to the utility model;

[0018] Figure 3 is an overall structural schematic diagram of a protective gas blowing mechanism and a laser welding machine according to the utility model.

[0019] In the figure: 1. Outer cylinder; 2. Connecting block; 3. Inner cylinder assembly; 301. Inner cylinder body; 302. Hollow inner ring; 303. Ventilation port; 4. Flow equalizing assembly; 401. Micro motor; 402. Rotating shaft; 403. Driving gear; 404. Driven gear ring; 405. Connecting upper ring; 406. Stirring blade; 5. Guide cylinder; 6. Diversion channel; 7. Diversion plate; 8. Upper cover plate; 9. Through groove; 10. Air inlet joint; 11. Fixed block; 12. Micro telescopic rod; 13. Connector; 14. Mounting plate; 15. Laser welding head. Detailed implementation mode

[0020] The following further describes in detail the implementation mode of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] As Figure 1 - Figure 2 shown, a protective gas blowing mechanism includes an outer cylinder 1, an inner cylinder assembly 3 and a flow equalizing assembly 4. The inner side of the outer cylinder 1 is connected with the inner cylinder assembly 3 through a connecting block 2. The inner cylinder assembly 3 includes an inner cylinder body 301. The inner cylinder assembly 3 further includes a hollow inner ring 302 and a ventilation port 303. The hollow inner ring 302 is integrally fixed in the middle of the inner cylinder body 301. The outer wall of the inner cylinder body 301 is evenly provided with ventilation ports 303. The hollow inner ring 302, the inner cylinder body 301 and the outer cylinder 1 are concentric structures. The inner cylinder body 301 is interconnected with the diversion channel 6 through the ventilation ports 303. A guide cylinder 5 is fixed below the inner cylinder body 301. A diversion channel 6 is arranged between the guide cylinder 5 and the outer cylinder 1. The outer wall of the lower part of the guide cylinder 5 is evenly fixed with diversion plates 7 in a circular radial shape. The upper part of the guide cylinder 5 is in a funnel shape. The top view of the diversion channel 6 outside the guide cylinder 5 is in a ring shape. The air inlet joint 10 is externally connected to a protective gas charging device for sending the protective gas into the inner part of the inner cylinder body 301. The arrangement of the ventilation ports 303 enables the dispersed protective gas to be sent into the inner part of the diversion channel 6 through the evenly arranged ventilation ports 303. The protective gas in the diversion channel 6 can flow downward along the guide cylinder 5 and be evenly diverted by the diversion plates 7, and finally be evenly ejected through the air outlet at the bottom of the diversion channel 6.

[0022] As Figure 1 - Figure 2As shown in the figure, a flow equalizing component 4 is installed inside the inner cylinder body 301. The flow equalizing component 4 includes a micro motor 401, a rotating shaft 402, a driving gear 403, a passive gear ring 404, a connecting upper ring 405 and a stirring blade 406. The rotating shaft 402 is arranged on the upper side of the micro motor 401, and the driving gear 403 is fixed to the outside of the rotating shaft 402. One side of the driving gear 403 is engaged with the passive gear ring 404, and the passive gear ring 404 is rotatably connected to the inner cylinder body 301. The connecting upper ring 405 is integrally fixed to the upper side of the passive gear ring 404, and the stirring blade 406 is fixed to the outside of the connecting upper ring 405. An upper cover plate 8 is installed above the outer cylinder body 1 and the inner cylinder body 301. A through groove 9 is formed in the middle of the upper cover plate 8, and an air inlet joint 10 is connected to one side above the upper cover plate 8. By means of the micro motor 401 and the rotating shaft 402, it is convenient to drive the rotation of the driving gear 403. The driving gear 403 is meshed with the passive gear ring 404, which is convenient to drive the rotation of the passive gear ring 404, the connecting upper ring 405 and the stirring blade 406, so that the stirring blade 406 can rotate to disperse the protective gas injected into the inner cylinder body 301 and send it into the inside of the diversion channel 6 through the uniformly arranged ventilation openings 303, realizing the flow equalizing effect.

[0023] As Figure 1 - Figure 3 shown in the figure, a laser welding machine includes a mounting plate 14 and a laser welding head 15. The laser welding head 15 is installed on one side of the mounting plate 14. The mounting plate 14 is bolted to the connecting piece 13, and the laser welding head 15 is located directly above the outer cylinder body 1. A fixing block 11 is connected to the outer side below the outer cylinder body 1. A micro telescopic rod 12 is installed above the fixing block 11, and a connecting piece 13 is installed above the micro telescopic rod 12. By means of bolts, it is convenient to connect the connecting piece 13 and the mounting plate 14 so that the outer cylinder body 1 is installed directly below the laser welding head 15. By means of the micro telescopic rod 12, it is convenient to telescopically adjust the position height of the fixing block 11 and the outer cylinder body 1. The hollow inner ring 302 in the middle of the inner cylinder body 301 and the through groove 9 in the middle of the upper cover plate 8 are used to reserve a channel for the laser ray of the laser welding head 15 so as not to affect the laser welding operation. The protective gas in the outer cylinder body 1 can be ejected in an annular shape, and then can provide uniform protective gas to the part to be welded of the workpiece, ensuring the welding quality and surface consistency of the workpiece.

[0024] In summary, as Figure 1 - Figure 3As shown, for the shielding gas blowing mechanism and the laser welding machine, first, the connecting member 13 can be connected to the mounting plate 14 by bolts so that the outer cylinder 1 is installed directly below the laser welding head 15. Then, the position heights of the fixing block 11 and the outer cylinder 1 can be adjusted by the telescopic movement of the micro telescopic rod 12. At this time, the hollow inner ring 302 in the middle of the inner cylinder 301 and the through groove 9 in the middle of the upper cover plate 8 are used to reserve a channel for the laser beam of the laser welding head 15, so as not to affect the laser welding operation. During use, the air inlet joint 10 can be externally connected to a shielding gas charging device, and then the shielding gas is sent into the interior of the inner cylinder 301. Then, the rotation of the driving gear 403 is driven by the micro motor 401 and the rotating shaft 402. The driving gear 403 and the driven gear ring 404 are in meshing connection, so as to drive the rotation of the driven gear ring 404, the connecting upper ring 405 and the stirring blades 406, so that the stirring blades 406 can rotate to disperse the shielding gas injected into the inner cylinder 301 and send it into the interior of the diversion channel 6 through the uniformly arranged ventilation openings 303, achieving a uniform flow effect. Then, the shielding gas in the diversion channel 6 can flow downward along the guiding cylinder 5 and be uniformly guided by the guide plate 7, and finally be uniformly ejected through the air outlet at the bottom of the diversion channel 6, so as to provide a uniform shielding gas to the part to be welded of the workpiece, ensuring the welding quality and surface consistency of the workpiece. In this way, the use process of the shielding gas blowing mechanism and the laser welding machine is completed.

[0025] The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A protective gas blowing mechanism, comprising an outer cylinder (1), an inner cylinder assembly (3) and a flow equalizing assembly (4), characterized in that: The inner side of the outer cylinder (1) is connected to an inner cylinder assembly (3) via a connecting block (2), and the inner cylinder assembly (3) comprises an inner cylinder (301), a flow balancing assembly (4) is installed inside the inner cylinder (301), and the flow balancing assembly (4) comprises a micro motor (401), a rotating shaft (402), a driving gear (403), a passive gear ring (404), a connecting ring (405) and a stirring blade (406), a rotating shaft (402) is arranged on the upper side of the micro motor (401), and a driving gear (403) is fixed to the outside of the rotating shaft (402). A passive gear ring (404) is meshed with one side of the active gear (403), and the passive gear ring (404) is rotatably connected to the inner cylinder (301); a connecting ring (405) is integrally fixed to the upper side of the passive gear ring (404), and a stirring blade (406) is fixed to the outer side of the connecting ring (405); a guide cylinder (5) is fixed below the inner cylinder (301), and a guide channel (6) is provided between the guide cylinder (5) and the outer cylinder (1), and a guide plate (7) is evenly fixed to the lower outer wall of the guide cylinder (5) in an annular radial shape.

2. A protective gas blowing mechanism according to claim 1, characterized in that: The inner cylinder assembly (3) further comprises a hollow inner ring (302) and a vent (303); the hollow inner ring (302) is integrally fixed in the middle of the inner cylinder (301), and the vents (303) are evenly arranged on the outer wall of the inner cylinder (301).

3. A protective gas blowing mechanism according to claim 2, characterized in that: The hollow inner ring (302), the inner cylinder (301) and the outer cylinder (1) are in a concentric circle structure, and the inner cylinder (301) is in communication with the flow guide channel (6) via the vent (303).

4. A protective gas blowing mechanism according to claim 1, characterized in that: The upper portion of the guide cylinder (5) is in the form of a funnel, and the guide channel (6) outside the guide cylinder (5) is in the form of a ring when viewed from above.

5. A protective gas blowing mechanism according to claim 1, characterized in that: An upper cover plate (8) is installed above the outer cylinder (1) and the inner cylinder (301), a through slot (9) is provided in the middle of the upper cover plate (8), and an air inlet joint (10) is connected to one side of the upper side of the upper cover plate (8).

6. A protective gas blowing mechanism according to claim 1, characterized in that: A fixing block (11) is connected to the lower outer side of the outer cylinder (1), a micro telescopic rod (12) is installed above the fixing block (11), and a connecting piece (13) is installed above the micro telescopic rod (12).

7. A laser welding machine, characterized in that: The laser welding machine is equipped with a protective gas blowing mechanism according to any one of claims 1 to 6, and comprises a mounting plate (14) and a laser welding head (15), wherein the laser welding head (15) is mounted on one side of the mounting plate (14), and the mounting plate (14) is bolted to the connecting piece (13), and the laser welding head (15) is located directly above the outer cylinder (1).

Images