A dust removal hood for laser precision processing equipment

Abstract

The utility model relates to a dust removal hood for laser precision machining equipment, which includes a hood body, a galvanometer processing area is arranged on the hood body, an air suction port is arranged on one side of the galvanometer processing area, and the air suction port is connected to the galvanometer processing area through a flow channel; a compressed air interface is arranged on the side wall of the galvanometer processing area, and a blowing hole is arranged on the side wall surface of the galvanometer processing area, and the compressed air interface is connected to the blowing hole through a compressed air flow channel inside the side wall surface. The dust removal hood for laser precision machining equipment of the utility model can form a negative pressure area on the machining surface of the workpiece by sucking air from the air suction port and blowing compressed air from the positive blowing hole and the side blowing hole, and with appropriate airflow parameters, the dust is rolled up and taken away by the airflow, and finally sucked into the dust collection equipment, so as to avoid the influence of dust on the workpiece machining and the optical path, and achieve better product quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal in laser precision processing, in particular to a dust removal hood for laser precision processing equipment. Background Art

[0002] The dust removal mechanism of laser precision processing equipment is very common and necessary. A mechanism with good dust removal effect can greatly improve the processing quality of the product. The properties of dust generated by different materials vary greatly, which requires the design of the dust hood to be scientific and reasonable to meet the needs of various processing materials to the maximum extent. When laser processing materials, due to its concentrated energy, it acts on the material in a very short time, causing the material to directly vaporize and dissolve, and the dust generated is at the micron level. Part of this dust will re-attach to the surface of the material, and the other part will attach to the telecentric lens. In the process of dust diffusion, it will also pollute the optical path, resulting in poor laser processing effect.

[0003] Most of the existing dust hoods are limited to direct exhaust, and the actual effect of compressed air blowing will be better. Therefore, a dust hood designed for laser precision processing uses a combination of exhaust and blowing, which, combined with appropriate use conditions, can better promote gas flow and remove dust. Summary of the invention

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a dust removal hood for laser precision machining equipment to remove dust generated during the laser precision machining process.

[0005] The utility model solves the technical problem through the following technical solutions:

[0006] A dust removal hood for laser precision processing equipment comprises a hood main body, a galvanometer processing area is arranged on the hood main body, an air suction port is arranged on one side of the galvanometer processing area, and the air suction port is connected to the galvanometer processing area through a flow channel; a compressed air interface is arranged on the side wall of the galvanometer processing area, and a blowing hole is arranged on the side wall surface of the galvanometer processing area, and the compressed air interface is connected to the blowing hole through a compressed air flow channel inside the side wall surface.

[0007] Moreover, the compressed air interface includes a compressed air front interface and a compressed air side interface. The compressed air front interface is arranged above the side wall facing the air intake port, and the compressed air side interface is arranged above the two side walls. The compressed air front interface is connected with the positive blowing hole through the compressed air positive flow channel, and the compressed air side interface is connected with the side blowing hole through the compressed air side flow channel.

[0008] Moreover, the compressed air positive flow channel is not connected to the compressed air side flow channel.

[0009] Moreover, a guide plate is arranged inside the flow channel.

[0010] Moreover, a protruding guide island is arranged inside the compressed air positive flow channel, and a curved guide fin is arranged inside the compressed air side flow channel.

[0011] Moreover, side suction grooves are arranged on both side walls of the galvanometer processing area. The side suction grooves are located above the side blowing holes. The side suction grooves and the side blowing holes are symmetrically arranged on both side walls of the galvanometer processing area.

[0012] Moreover, the side suction grooves are extensions of the flow channel on the two side walls of the galvanometer processing area.

[0013] Moreover, the axis of the side-blowing air hole is ensured to form an angle with the horizontal plane.

[0014] Moreover, the positive blowing holes are divided into multiple rows and arranged in a staggered manner, and are generally close to the lower bottom surface of the wind hood, facing the suction port of the flow channel, and the axis of the positive blowing holes maintains a downward angle with the horizontal plane.

[0015] Moreover, the air suction port is connected to an external dust removal device through a pipeline; a group of compressed air side interfaces are arranged on both sides of the galvanometer processing area, and both sides share a compressed air source to ensure that the air pressure and flow of the compressed air side interfaces on both sides are consistent; two compressed air positive interfaces are arranged on one side of the galvanometer processing area, and they share another compressed air source to ensure that the air pressure and flow of the two compressed air positive interfaces are consistent.

[0016] The advantages and beneficial effects of the utility model are:

[0017] 1. The dust removal hood for laser precision processing equipment of the utility model can form a negative pressure area on the processing surface of the workpiece by sucking air from the air suction port and blowing compressed air from the positive blowing hole and the side blowing hole, and matching with appropriate air flow parameters, so that the dust can be rolled up and taken away by the air flow, and finally sucked into the dust collecting equipment, thereby avoiding the influence of dust on the workpiece processing and the optical path, and achieving better product quality.

[0018] 2. The dust removal hood for laser precision processing equipment of the utility model, the compressed air interface includes a compressed air front interface and a compressed air side interface. The compressed air front interface is arranged above the side wall opposite to the air suction port, and the compressed air side interfaces are arranged above the two side walls; the compressed air front interface is connected with the positive blowing hole through the compressed air front flow channel, and the compressed air side interface is connected with the side blowing hole through the compressed air side flow channel; the compressed air front interface and the compressed air side interface can be independently controlled, thereby improving the controllability of the compressed air and improving the uniformity of the compressed air in all directions.

[0019] 3. In the dust removal hood for laser precision processing equipment of the utility model, the compressed air positive flow channel and the compressed air side flow channel are not connected, which can effectively realize the separate control of the gas of the positive blowing hole and the two side blowing holes, thereby improving the supply accuracy of compressed air.

[0020] 4. The dust removal hood for laser precision processing equipment of the utility model is also provided with side suction grooves on both side walls of the galvanometer processing area. The side suction grooves are located above the side blowing holes to ensure that the airflows blowing on both sides relatively offset the flow rate perpendicular to the suction port, and gather the dust on the edges of both sides of the galvanometer processing area to the central area and be sucked away by the suction port, thereby realizing the function of good suction of the dust raised in the process of compressed air blowing and improving the suction effect.

[0021] 5. The dust removal hood for laser precision processing equipment of the utility model has side suction grooves which are extensions of the flow channel on the two side walls of the galvanometer processing area. The fluid in the side suction grooves is synchronously sucked through the flow channel of the suction port, thereby achieving more complete and comprehensive suction and a larger suction port coverage area.

[0022] 6. The dust removal hood used for laser precision processing equipment of the utility model has the side blowing air hole axis and the horizontal plane ensuring an angle, the positive blowing air holes are divided into multiple rows and staggered, and the whole is close to the bottom surface of the hood, facing the suction port of the flow channel, and the axis of the positive blowing air hole maintains a downward angle with the horizontal plane to achieve the processing of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the overall appearance structure diagram of the utility model;

[0024] Figure 2 It is a half-section view of the utility model;

[0025] Figure 3 It is an internal cross-sectional view of the utility model;

[0026] Figure 4 It is a schematic diagram of the flow channel connection between the side suction groove and the suction port of the utility model;

[0027] Figure 5 It is a partial cross-sectional view of the side-blowing air hole of the utility model.

[0028] Figure numbers: 1-air suction port; 2-compressed air side interface; 3-compressed air front interface; 4-wind hood body; 5-flow channel; 6-guide plate; 7-side air suction slot; 8-side blowing air hole; 9-front blowing air hole; 10-compressed air front flow channel; 11-guide fin; 12-guide island; 13-galvanometer processing area; 14-compressed air side flow channel. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0030] A dust removal hood for laser precision processing equipment, the hood body 4 is provided with a leaky galvanometer processing area 13, the galvanometer processing area 13 is square, according to the processing range of the galvanometer 45X45mm, the corresponding cross-section of the galvanometer processing area 13 is set to 65X65mm. An air suction port 1 is provided on one side of the galvanometer processing area 13, and the air suction port 1 is calibrated as the front position of the hood. The air suction port 1 is connected to the galvanometer processing area 13 through a flow channel 5, the flow channel 5 is spoon-shaped with a high front and a low back, and a guide plate 6 is provided inside the flow channel 5, and the guide plate 6 mainly plays the role of dividing the airflow and reducing turbulence. A compressed air interface is provided on the side wall of the galvanometer processing area, and a blowing hole is provided on the side wall of the galvanometer processing area. The compressed air interface is connected to the blowing hole through the compressed air flow channel inside the side wall.

[0031] The compressed air interface includes a compressed air front interface and a compressed air side interface. A compressed air front interface 3 is provided above the wall of the galvanometer processing area 13 facing the air inlet 1, and compressed air side interfaces 2 are provided above the two side walls. The compressed air front interface 3 and the side interface 3 are connected to the air pipe through a standard air pipe joint. The above compressed air front (side) interface is provided to introduce the compressed air on the equipment into the cavity inside the wall of the galvanometer processing area 13 in different regions.

[0032] Inside the wall of the galvanometer processing area 13, a compressed air positive flow channel 10 is arranged below the compressed air positive interface 3. This positive flow channel 10 is a cone-shaped body with a small top and a large bottom, which can expand and reduce the pressure of the airflow. A positive blowing hole 9 is arranged at the bottom of the compressed air positive flow channel 10. A guide island 12 with a suitable contour is arranged at an appropriate position inside the compressed air positive flow channel 10. The compressed air enters the compressed air positive flow channel 10 through the compressed air positive interface 3, and reaches the positive blowing hole 9 evenly after being diverted by the guide island 12. Again, through the expansion and decompression of the compressed air positive flow channel 10 and the appropriate diversion of the guide island 12, the ultimate goal is to evenly and slowly fill the high-speed and high-pressure airflow flowing into the compressed air positive interface 3 into the entire bottom of the positive blowing 9, so that the air pressure of the airflow blown out of each hole of the positive blowing hole 9 is appropriate, and the flow rate is not much different, thereby ensuring that the airflow blown into the galvanometer processing area 13 is stable and uniform, and reducing turbulence and disturbance.

[0033] On the two side walls of the galvanometer processing area 13, a compressed air side channel 12 is provided, which is in the shape of a cone with a small top and a large bottom. A number of guide fins 11 are provided at appropriate positions inside the compressed air side channel 14. The compressed air is evenly distributed to the side blowing holes after being guided by the guide fins 11. The setting here is consistent with the function of the compressed air positive channel 14, and is also to expand and reduce the pressure of the high-speed and high-pressure airflow flowing from the compressed air side interface 2 and to divert and guide it, so that the air pressure of the airflow reaching the side blowing holes is appropriate and the flow rate is not much different.

[0034] The compressed air positive flow channel 3 is not connected to the compressed air side flow channel 2, and the airflows inside each do not affect each other.

[0035] Side suction grooves 7 are provided below the two side walls of the galvanometer processing area 13 . The side suction grooves 7 widen the cross-sectional area of ​​the bottom of the galvanometer processing area 13 , because dust generation and discharge mainly occur at the bottom of the galvanometer processing area 13 .

[0036] The side suction groove 7 is located above the side blowing hole 8, and the side suction groove 7 and the side blowing hole 8 are symmetrically arranged on the two side walls of the galvanometer processing area. In this way, it can be ensured that the airflow blowing on both sides relatively offsets the flow rate perpendicular to the air suction port, and the dust on the two side edges of the galvanometer processing area 13 is gathered to the central area and sucked away by the air suction port.

[0037] The side suction groove 7 is an extension of the flow channel 5 on the two side walls of the galvanometer processing area 13, and the flow channel 5 is extended to the rear wall of the galvanometer processing area 13, such as Figure 4 As shown, this is to maximize the flow channel extension within the 65X65mm galvanometer processing range of the entire galvanometer processing area 13 and ensure the integrity of the overall flow channel extension. And the axis of the side blowing hole 8 is ensured to form an angle with the horizontal plane, preferably 45°, such as Figure 5 shown.

[0038] The positive blowing holes 9 are arranged in multiple rows in a staggered manner, and are close to the bottom surface of the wind hood as a whole, and are at the same height as the bottom of the side suction slot 7. This can further ensure that the blowing airflow on both sides of the positive blowing holes 9 can be blown into the side suction slot 7, which is convenient for edge dust removal. In addition, the positive blowing holes 9 are aligned with the suction port of the flow channel 5 extending to the galvanometer processing area, and the dust is directly blown into the flow channel 5. The axis of the positive blowing hole 9 maintains a downward angle with the horizontal plane, and the angle is related to the height of the lower surface of the wind hood from the processing material, so that most of the airflow blows directly to the focal position.

[0039] The dust removal hood of the laser precision processing equipment is installed in the following way when in use: the air suction port is connected to the dust removal equipment through a pipeline; the compressed air side interfaces on both sides of the galvanometer processing area share a compressed air source to ensure that the air pressure and flow of the compressed air side interfaces on both sides are consistent, that is, the two can share a speed regulating (or pressure reducing) valve; two groups of compressed air positive interfaces are arranged on the rear wall surface of the galvanometer processing area 13, and the two positive interfaces share another compressed air source to ensure that the air pressure and flow of the two compressed air positive interfaces are consistent, that is, the two can share another speed regulating (or pressure reducing) valve.

[0040] After the method is implemented according to the above settings, the combined method of blowing and suction can be used to the greatest extent to achieve dust removal during the laser processing process, thereby reducing the contamination of the workpiece after processing and the influence on the processing optical path.

[0041] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A dust removal hood for laser precision processing equipment, characterized in that: The invention comprises a wind shield body (4), a galvanometer processing area (13) is arranged on the wind shield body (4), an air suction port (1) is arranged on one side of the galvanometer processing area (13), and the air suction port (1) is connected to the galvanometer processing area (13) through a flow channel (5); a compressed air interface is arranged on the side wall of the galvanometer processing area (13), and a blowing hole is arranged on the side wall surface of the galvanometer processing area (13), and the compressed air interface is connected to the blowing hole through a compressed air flow channel inside the side wall surface; The compressed air interface comprises a compressed air front interface (3) and a compressed air side interface (2); the compressed air front interface (3) is arranged above the side wall facing the air inlet (1), and the compressed air side interfaces (2) are arranged above the two side walls; the compressed air front interface (3) is connected to the front blowing hole (9) through the compressed air front flow channel (10), and the compressed air side interface (2) is connected to the side blowing hole (8) through the compressed air side flow channel (14).

2. The dust removal hood for laser precision processing equipment according to claim 1, characterized in that: The compressed air positive flow channel (10) is not connected to the compressed air side flow channel (14).

3. The dust removal hood for laser precision processing equipment according to claim 1, characterized in that: A guide plate (6) is arranged inside the flow channel (5).

4. The dust removal hood for laser precision processing equipment according to claim 1, characterized in that: A protruding guide island (12) is provided inside the compressed air positive flow channel (10), and a curved guide fin (11) is provided inside the compressed air side flow channel (14).

5. The dust removal hood for laser precision processing equipment according to claim 1, characterized in that: Side air suction grooves (7) are also provided on the two side walls of the galvanometer processing area (13), the side air suction grooves (7) are located above the side blowing holes (8), and the side air suction grooves (7) and the side blowing holes (8) are symmetrically arranged on the two side walls of the galvanometer processing area (13).

6. The dust removal hood for laser precision processing equipment according to claim 5, characterized in that: The side air suction grooves (7) are extensions of the flow channel (5) on the two side walls of the galvanometer processing area (13).

7. The dust removal hood for laser precision processing equipment according to claim 5, characterized in that: The axis of the side blowing air hole (8) is ensured to form an angle with the horizontal plane.

8. The dust removal hood for laser precision processing equipment according to claim 1, characterized in that: The positive blowing holes (9) are arranged in a staggered manner in a plurality of rows and are generally close to the lower surface of the wind shield and directly opposite to the suction port of the flow channel (5). The axis of the positive blowing holes (9) maintains a downward angle with the horizontal plane.

9. The dust removal hood for laser precision processing equipment according to claim 1, characterized in that: The air suction port (1) is connected to an external dust removal device through a pipeline; a group of compressed air side interfaces (2) are arranged on both sides of the galvanometer processing area (13), and the two sides share a compressed air source to ensure that the air pressure and flow rate of the compressed air side interfaces on both sides are consistent; two compressed air positive interfaces (3) are arranged on one side of the galvanometer processing area (13), and they share another compressed air source to ensure that the air pressure and flow rate of the two compressed air positive interfaces (3) are consistent.

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