Laser head gas curtain protection mechanism

Abstract

The application discloses a laser end head air curtain protection mechanism for protecting a rotating reflector of a laser cleaner, which comprises a first annular part, a second annular part and a third annular part. The first annular part is arranged annularly around the rotating reflector. The second annular part is sleeved outside the first annular part, and a first exhaust gap and an inner air curtain cavity are left between the first annular part and the second annular part. The third annular part is sleeved outside the second annular part. The first exhaust gap and the inner air curtain cavity are formed by the first annular part and the second annular part arranged around the rotating reflector, and at least two groups of air fans are used to convey air flow to the inner air curtain cavity, so that an air curtain is formed in front of the rotating reflector, and smoke and dust close to the rotating reflector are dispersed in the laser cleaning process, thereby avoiding the problem that the smoke and dust are attached to the lens and the lens is burnt.

Description

Technical Field

[0001] This invention relates to the field of laser cleaning equipment technology, and in particular to a laser end-cap air curtain protection mechanism. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] After use, residues will adhere to the inner wall of the gun barrel. These residues will reduce the smoothness of the inner wall and increase frictional resistance. Therefore, it is necessary to use appropriate equipment to clean the inner wall. Laser cleaning can effectively remove impurities from the inner wall of the gun barrel.

[0004] Existing laser cleaning equipment typically uses a single beam to clean the inner wall of the laser barrel. In laser cleaning, cutting, and other operations, the protective lens is a critical component of the laser head and must be protected from contaminants such as dust and slag. Traditional protection solutions often use an air compressor connected to an external air pipe to continuously supply air to the laser head, forming an air curtain to isolate contaminants. This method has the following drawbacks: it relies on an external air source; it requires an air compressor and air pipe, making it difficult to carry and deploy the air source in the field, especially in environments without a stable power supply. Therefore, a laser head air curtain protection mechanism is proposed to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings by providing a laser tip air curtain protection mechanism.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a laser end-cap air curtain protection mechanism for protecting the rotating reflector of a laser cleaner, comprising:

[0007] The first annular portion is arranged in a ring around the rotating reflector;

[0008] The second annular part is sleeved on the outside of the first annular part, and a first exhaust gap and an inner air curtain cavity are left between the first annular part and the second annular part.

[0009] The third annular portion is sleeved on the outside of the second annular portion, and a second exhaust gap and an external air curtain cavity are left between the third annular portion and the second annular portion.

[0010] It also includes multiple sets of fans installed on the laser cleaner. The output ends of at least two sets of fans are connected to the inner air curtain cavity to block dust and protect the rotating reflector. The output ends of the remaining fans are connected to the outer air curtain cavity to blow away the smoke and dust generated during laser operation.

[0011] Furthermore, an acceleration curve is provided on the upper side of the first annular portion, and the acceleration curve is a Laval airflow structure curve.

[0012] Furthermore, the second annular portion includes a movable ring that can move axially, and an adjusting ring disposed outside the movable ring and threadedly connected thereto, wherein a tapered guide ring is disposed inside the movable ring;

[0013] The adjusting ring is used to adjust the axial movement of the movable ring and control the distance between the conical guide ring and the first exhaust gap, so as to control the angle at which the gas is discharged in the first exhaust gap.

[0014] Furthermore, a diffuser is provided within the second exhaust gap;

[0015] A rotating ring is provided inside the outer air curtain cavity, and a diffuser is provided on the rotating ring. The diffuser is used to guide the exhaust airflow in the second exhaust gap to be discharged obliquely along the diffuser.

[0016] Furthermore, the laser cleaner is also equipped with a drive unit, and the output end of the drive unit is provided with a transmission wheel extending into the outer air curtain cavity. The transmission wheel is connected to the rotating ring to drive the rotating ring and the diffuser deflector plate provided thereon to rotate.

[0017] Furthermore, the rotating ring is used to block the second exhaust gap, and the air in the outer air curtain cavity is discharged through the diffuser.

[0018] Furthermore, the laser cleaner is equipped with a hollow motor for driving the rotating mirror to rotate;

[0019] The hollow motor rotates at the same speed as the drive unit, so that the gas discharged from the outer air curtain cavity is guided by the diffuser to disperse the smoke and dust on the working path of the rotating reflector.

[0020] Furthermore, the number of fans is three sets, and the three sets of fans are equidistantly distributed on the laser cleaner. The output ends of two sets of fans are connected to the inner air curtain cavity, and the output end of one set of fans is connected to the outer air curtain cavity.

[0021] Furthermore, a filter screen is provided at the input end of the fan.

[0022] The beneficial effects of this invention are reflected in:

[0023] This invention utilizes a first exhaust gap formed by a first annular portion and a second annular portion surrounding a rotating mirror, and an inner air curtain cavity, and supplies airflow to the inner air curtain cavity via at least two sets of fans to form an air curtain in front of the rotating mirror. This air curtain disperses smoke and dust near the rotating mirror during laser cleaning, preventing smoke and dust from adhering to the lens and causing lens burn-out. Attached Figure Description

[0024] Figure 1 This is a three-dimensional sectional view of the present invention;

[0025] Figure 2 This is a three-dimensional structural view of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the present invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the first exhaust gap structure of the present invention.

[0029] In the picture:

[0030] 1. Laser cleaner;

[0031] 2. Rotating reflector;

[0032] 3. Hollow motor;

[0033] 4. First annular portion;

[0034] 5. Second annular section; 51. Movable ring; 52. Adjusting ring; 53. Conical guide ring;

[0035] 6. The third ring section;

[0036] 7. Fan;

[0037] 8. Inner air curtain cavity;

[0038] 9. External air curtain cavity;

[0039] 10. Diffusion guide plate;

[0040] 11. Drive unit;

[0041] 12. Transmission wheel;

[0042] 13. Rotating ring. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figure 1-5 This invention discloses a laser end-cap air curtain protection mechanism for protecting the rotating reflector 2 of the laser cleaner 1. Specifically, the laser cleaner 1 emits a laser beam, which, after refraction by the rotating reflector 2, acts on the inner wall of the circular tube for laser cleaning. The mechanism includes:

[0045] The first annular portion 4 is arranged in a ring around the rotating reflector 2;

[0046] The second annular part 5 is sleeved on the outside of the first annular part 4, and a first exhaust gap and an inner air curtain cavity 8 are left between the first annular part 4 and the second annular part 5.

[0047] The third annular part 6 is sleeved on the outside of the second annular part 5. A second exhaust gap and an external air curtain cavity 9 are left between the third annular part 6 and the second annular part 5. In the above, the first annular part 4, the second annular part 5 and the third annular part 6 are coaxially arranged and are stacked sequentially from the inside to the outside.

[0048] It also includes multiple sets of fans 7 installed on the laser cleaner 1. The output ends of at least two sets of fans 7 are connected to the inner air curtain cavity 8 to block dust and protect the rotating reflector 2. The output ends of the remaining fans 7 are connected to the outer air curtain cavity 9 to blow away the smoke and dust generated during laser operation.

[0049] This application, through the above-described structural configuration, uses the first exhaust gap formed by the first annular portion 4 and the second annular portion 5 surrounding the rotating mirror 2, and the inner air curtain cavity 8, and supplies airflow to the inner air curtain cavity 8 through at least two sets of the aforementioned fans, to form an air curtain at the front of the rotating mirror 2. This is to disperse the smoke and dust near the rotating mirror 2 during the laser cleaning process, and to prevent the smoke and dust from adhering to the lens and causing the lens to burn out.

[0050] Secondly, the second exhaust gap formed between the second annular part 5 and the third annular part 6, and the outer air curtain cavity 9, under the drive of the fan 7, can discharge gas through the second exhaust gap and work together with the gas blown through the first exhaust gap to quickly clear the smoke and dust in the round tube (cannon tube), so as to ensure the normal operation of the laser equipment and avoid smoke and dust blocking and reducing the working efficiency of the laser.

[0051] In a preferred embodiment, an acceleration curve is formed on the upper side of the first annular portion 4, such as... Figure 5 As shown, the acceleration curve is a curve of the Laval airflow structure.

[0052] With the above structural design, the Laval airflow structure is a pipe section structure that first contracts and then expands. In this structure, the airflow can be accelerated to the speed of sound, which effectively increases the airflow speed, effectively removes splashes, and greatly reduces the disturbance to the surrounding gas.

[0053] In another preferred embodiment, the second annular portion 5 includes a movable ring 51 that can move axially, and an adjusting ring 52 disposed outside the movable ring 51 and threadedly connected thereto. A tapered guide ring 53 is disposed inside the movable ring 51. It should be noted that the movable ring 51 is slidably disposed on the second annular portion 5, and the second annular portion 5 is also provided with a limiting groove (not shown in the figure) to prevent the movable ring 51 from falling out.

[0054] The adjusting ring 52 is used to adjust the axial movement of the movable ring 51 and control the distance between the conical guide ring 53 and the first exhaust gap, so as to control the angle of gas discharge in the first exhaust gap.

[0055] With the above-mentioned structural configuration, the adjusting ring 52 can be rotated to control the moving ring 51 to move axially by meshing with the moving ring 51. The conical guide ring 53 set inside the moving ring 51 can act on the gas discharged in the first exhaust gap to change the gas flow direction, so as to form a conical air passage at the front end of the rotating reflector 2, effectively isolating smoke and dust.

[0056] In another preferred embodiment, a diffuser 10 is provided in the second exhaust gap;

[0057] A rotating ring 13 is provided inside the outer air curtain cavity 9, and a diffuser 10 is provided on the rotating ring 13. The diffuser 10 is used to guide the exhaust airflow in the second exhaust gap to be discharged obliquely along the diffuser 10.

[0058] Furthermore, the laser cleaner 1 is also provided with a drive unit 11. The output end of the drive unit 11 is provided with a transmission wheel 12 extending into the outer air curtain cavity 9. The transmission wheel 12 is connected to the rotating ring 13 for driving the rotating ring 13 and the diffuser air guide plate 10 provided thereon to rotate.

[0059] In the above embodiment, the gas in the outer air curtain cavity 9 is discharged normally from the second exhaust gap, while a portion of the gas can be discharged toward the side off the axis under the action of the diffuser 10, acting on the pipe wall for cleaning, so as to avoid the purpose of dust adsorbing on the inner wall of the round pipe.

[0060] Furthermore, the rotating ring 13 is used to block the second exhaust gap, and the air in the outer air curtain cavity 9 is discharged through the diffuser 10.

[0061] Compared to the above embodiments, in this application, the gas inside the external air curtain cavity 9 is only discharged from the diffuser 10, and this part of the airflow has a high velocity and a long operating distance.

[0062] Furthermore, the laser cleaner 1 is equipped with a hollow motor 3 for driving the rotating reflector 2 to rotate;

[0063] The hollow motor 3 rotates at the same speed as the drive unit 11, so that the gas discharged from the outer air curtain cavity 9 is guided by the diffuser 10 to blow away the smoke and dust on the working path of the rotating reflector 2.

[0064] In combination with the above structure, during actual operation, when the drive unit 11 drives the rotating ring 13 to rotate, it can disperse the smoke on the laser working path in advance, providing a relatively clean working space for laser cleaning, which effectively improves work efficiency. It should be noted that the diffuser 10 and the emitting end of the rotating reflector 2 are staggered to allow the airflow to arrive in the laser working area with a certain lead time.

[0065] Finally, it should be noted that there are three sets of fans 7, which are equidistantly distributed on the laser cleaner 1. The output ends of two sets of fans 7 are connected to the inner air curtain cavity 8, and the output end of one set of fans 7 is connected to the outer air curtain cavity 9.

[0066] It should be added that the input end of the fan 7 is equipped with a filter to prevent external impurities from entering the air duct and further extend the equipment life.

[0067] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0068] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0069] Additionally, "multiple" refers to two or more.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser end-cap air curtain protection mechanism for protecting the rotating reflector (2) of a laser cleaner (1), characterized in that, include: The first annular portion (4) is arranged in a ring around the rotating reflector (2); The second annular part (5) is sleeved on the outside of the first annular part (4), and a first exhaust gap and an inner air curtain cavity (8) are left between the first annular part (4) and the second annular part (5). The third annular part (6) is sleeved on the outside of the second annular part (5), and a second exhaust gap and an external air curtain cavity (9) are left between the third annular part (6) and the second annular part (5). It also includes multiple sets of fans (7) installed on the laser cleaner (1), at least two sets of fans (7) are connected to the inner air curtain cavity (8) to block dust and protect the rotating reflector (2), and the output ends of the remaining fans (7) are connected to the outer air curtain cavity (9) to blow away the smoke and dust generated during the laser operation. A diffuser (10) is provided in the second exhaust gap; A rotating ring (13) is provided inside the outer air curtain cavity (9), and a diffuser (10) is provided on the rotating ring (13). The diffuser (10) is used to guide the exhaust airflow in the second exhaust gap to be discharged obliquely along the diffuser (10). The laser cleaner (1) is also provided with a drive unit (11). The output end of the drive unit (11) is provided with a transmission wheel (12) extending into the outer air curtain cavity (9). The transmission wheel (12) is connected to the rotating ring (13) for driving the rotating ring (13) and the diffuser (10) provided thereon to rotate. The rotating ring (13) is used to block the second exhaust gap, and the air in the outer air curtain cavity (9) is discharged through the diffuser (10); The laser cleaner (1) is equipped with a hollow motor (3) for driving the rotating mirror (2) to rotate. The hollow motor (3) rotates at the same speed as the drive unit (11) so that the gas discharged from the outer air curtain cavity (9) is blown away by the diffuser (10) through the diffuser plate (10) to disperse the smoke and dust on the working path of the rotating reflector (2).

2. The laser tip air curtain protection mechanism according to claim 1, characterized in that: An acceleration curve is provided on the upper side of the first annular portion (4), and the acceleration curve is a Laval airflow structure curve.

3. The laser tip air curtain protection mechanism according to claim 1, characterized in that: The second annular portion (5) includes a movable ring (51) that can move along the axial direction, and an adjusting ring (52) disposed outside the movable ring (51) and threadedly connected thereto. A tapered guide ring (53) is disposed inside the movable ring (51). The adjusting ring (52) is used to adjust the movable ring (51) to move axially and control the distance between the conical guide ring (53) and the first exhaust gap, so as to control the angle of gas discharge in the first exhaust gap.

4. The laser tip air curtain protection mechanism according to claim 1, characterized in that: The number of fans (7) is three sets, and the three sets of fans (7) are equally distributed on the laser cleaner (1). The output ends of two sets of fans (7) are connected to the inner air curtain cavity (8), and the output end of one set of fans (7) is connected to the outer air curtain cavity (9).

5. The laser tip air curtain protection mechanism according to claim 4, characterized in that: The input end of the fan (7) is equipped with a filter screen.

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