Optical path protection device for laser shock peening

Abstract

The utility model discloses a kind of optical path protection devices of laser shock peening, including box, the bottom of the box inner cavity is equipped with the load-bearing assembly of automatic position adjustment, the top of load-bearing assembly is provided with laser assembly, the inner side wall of box is equipped with the filter component for filtering gas, filter component includes the gas pump bolted to the top of box, the exhaust end of gas pump is provided with exhaust pipe, the gas intake end of gas pump is communicated with the suction tube that is penetrated to the inside of box, the utility model is equipped with box, so that workpiece laser shock peening is always in closed space, then through the setting of filter component, start gas pump to generate negative pressure, nitrogen, harmful gas, metal dust particle is filtered by being discharged into the inside of filter box through gas hood, realize the filtering effect of toxic gas and metal particle dust, nitrogen is finally discharged to outdoor after passing through suction tube, gas pump, exhaust pipe in turn, avoid pollution to air.

Description

Technical Field

[0001] This utility model relates to the field of laser shock strengthening technology, specifically to an optical path protection device for laser shock strengthening. Background Technology

[0002] Laser shock peening is a surface modification technology that uses a high-energy pulsed laser beam to irradiate a metal surface, inducing a high-intensity compressive stress shock wave to achieve plastic deformation of the surface. This technology generates an impact force effect similar to mechanical shot peening through the interaction between the laser and the material surface, thereby changing the physical properties of the material surface. During the processing, a large number of water droplets and protective layer debris are ejected from the workpiece surface by plasma explosion. Some of these will contaminate the focusing lens and affect the use of the focusing lens. Therefore, a device that protects the focusing lens through airflow is required.

[0003] Existing optical path protection devices typically use a protective airflow chamber at the end of the beam. Nitrogen gas is pumped into the chamber to create an airflow that prevents water droplets and debris from splashing onto the focusing lens surface, thus protecting the focusing lens in the optical path. This protective structure requires a large amount of nitrogen gas. Although nitrogen is non-toxic, it can cause excessively high nitrogen concentrations in the processing area, leading to oxygen deficiency among workers. Furthermore, during processing, nitrogen gas can carry dust particles generated by laser shock enhancement into the air, causing air pollution. Utility Model Content

[0004] The purpose of this invention is to provide an optical path protection device for laser shock peening. By setting up the housing, the laser shock peening of the workpiece is always kept in a sealed space. By setting up the filter assembly, the air pump is started to generate negative pressure, and nitrogen, metal dust particles and other substances are discharged into the filter box through the gas collection hood. After filtration, the nitrogen is finally discharged to the outside through the extraction pipe, air pump and exhaust pipe in sequence, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a laser shock enhanced optical path protection device, comprising a housing, an automatically adjustable bearing component installed at the bottom of the housing cavity, a laser component positioned above the bearing component, a filter component for filtering gas installed on the inner wall of the housing, the filter component including an air pump bolted to the top of the housing, an exhaust pipe provided at the exhaust end of the air pump, an air intake end of the air pump connected to an exhaust pipe penetrating into the housing, one end of the exhaust pipe connected to a filter box, the filter box being fixedly installed in the middle of the inner wall of the housing, and a gas collection hood for collecting gas connected to the bottom of the filter box via a connecting pipe.

[0006] Preferably, one end of the filter box is provided with several sets of concave grooves, and a set of filter plates is movably inserted into each set of concave grooves.

[0007] Preferably, the laser assembly includes a laser bolted to the top of the housing, and a sealed optical tube for beam protection is connected to the bottom of the laser.

[0008] Preferably, one end of the sealed light tube extends into the interior of the housing, and a detachable focusing lens mount is installed at the bottom of the sealed light tube.

[0009] Preferably, a protective airflow cylinder is installed at the bottom of the mirror mount, and an air inlet pipe is installed through the top of the housing, with one end of the air inlet pipe connected to the middle of the protective airflow cylinder.

[0010] Preferably, the supporting component includes a movable seat fixedly installed at the bottom of the inner cavity of the box, a placement platform for supporting the workpiece is installed on the top of the movable seat, and the air inlet end of the gas collecting hood is located above the placement platform.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention utilizes a sealed enclosure. Inside the enclosure, a laser assembly performs laser shock strengthening on a workpiece mounted on a supporting component. This ensures the laser shock strengthening process remains within a closed space, preventing outside air from contaminating the laser beam. Simultaneously, protective gases, toxic gases, and metal dust particles are also prevented from leaking out. Furthermore, a filtration system, utilizing the connections between an air pump, exhaust pipe, extraction pipe, filter box, and gas collection hood, allows the air pump to generate negative pressure, drawing nitrogen and dust particles through the gas collection hood into the filter box for filtration. This achieves effective filtration of toxic gases and metal dust particles. After filtration, the nitrogen gas ultimately passes through the extraction pipe, air pump, and exhaust pipe before being discharged outdoors, preventing air pollution.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the box body of this utility model;

[0016] Figure 3 This is a schematic diagram of the laser component installation structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the installation structure of the filter assembly of this utility model;

[0018] Figure 5 This is an exploded structural diagram of the filter component of this utility model.

[0019] In the diagram: 1. Housing; 2. Load-bearing component; 21. Movable base; 22. Placement platform; 3. Laser component; 31. Laser; 32. Enclosed optical tube; 33. Mirror mount; 34. Protective airflow tube; 35. Air inlet pipe; 4. Filter component; 41. Air pump; 42. Exhaust pipe; 43. Extraction pipe; 44. Filter box; 45. Concave groove; 46. Filter plate; 47. Gas collection hood. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a laser shock enhanced optical path protection device, including a housing 1. An automatically adjustable bearing component 2 is installed at the bottom of the inner cavity of the housing 1. A laser component 3 is arranged above the bearing component 2. A filter component 4 for filtering gas is installed on the inner side wall of the housing 1. The filter component 4 includes an air pump 41 bolted to the top of the housing 1. An exhaust pipe 42 is provided at the exhaust end of the air pump 41. An air intake end of the air pump 41 is connected to an exhaust pipe 43 that penetrates into the interior of the housing 1. One end of the exhaust pipe 43 is connected to a filter box 44. The filter box 44 is fixedly installed in the middle of the inner side wall of the housing 1. The bottom of the filter box 44 is connected to a gas collection hood 47 for collecting gas through a connecting pipe.

[0022] In use, the workpiece to be strengthened is placed on the placement platform 22. The placement platform 22 is moved by controlling the moving seat 21, and the laser component 3 is activated simultaneously to achieve the effect of strengthening the metal surface of the workpiece. The front end of the box 1 is equipped with a rotating sealed door for placing and taking out the workpiece. At the same time, a glass window is set in the middle of the door to facilitate observation of the processing. The glass window is made of eye-protecting light-blocking glass. Through the setting of the filter component 4, the connection between the air pump 41, exhaust pipe 42, suction pipe 43, filter box 44, and gas collection hood 47 is used to start the air pump 41 to generate negative pressure, and nitrogen and metal dust particles are discharged into the filter box 44 through the gas collection hood 47 for filtration, achieving the filtration effect of toxic gases and metal dust particles. After filtration, the nitrogen finally passes through the suction pipe 43, air pump 41, and exhaust pipe 42 in sequence and is discharged to the outside to avoid air pollution. The nitrogen can be discharged into the recovery equipment through the discharge pipe for recovery and reuse, reducing the procurement cost of protective gas.

[0023] The filter box 44 has several sets of concave grooves 45 through one end. Each set of concave grooves 45 has a filter plate 46 that is movably inserted inside. Through the connection between the filter box 44, the concave grooves 45 and the filter plates 46, the gas entering the filter box 44 can only be discharged after being filtered by the filter plates 46, thus achieving the effect of filtering dust particles. The concave grooves 45 enable the filter plates 46 to be quickly installed and removed, making it easy to replace and clean the filter plates 46.

[0024] The laser assembly 3 includes a laser 31 bolted to the top of the housing 1. The bottom of the laser 31 is connected to a sealed optical tube 32 for beam protection. One end of the sealed optical tube 32 extends into the interior of the housing 1, and a lens mount 33 with a detachable focusing lens is installed at the bottom of the sealed optical tube 32. The role of the laser 31 in laser shock enhancement technology is to generate a high-energy pulsed laser beam, which enters the interior of the housing 1 through the sealed optical tube 32 and is focused by the focusing lens inside the lens mount 33, inducing the generation of a high-intensity compressive stress shock wave, thereby achieving the effect of surface plastic deformation.

[0025] A protective airflow cylinder 34 is installed at the bottom of the lens mount 33, and an air inlet pipe 35 is installed through the top of the housing 1. One end of the air inlet pipe 35 is connected to the middle of the protective airflow cylinder 34. Nitrogen gas is discharged into the interior of the protective airflow cylinder 34 through the air inlet pipe 35. The nitrogen gas is quickly discharged from the bottom of the protective airflow cylinder 34 to protect the focusing lens and prevent water droplets and debris from splashing onto the surface of the focusing lens.

[0026] The support component 2 includes a movable seat 21 fixedly installed at the bottom of the inner cavity of the housing 1. A placement platform 22 for supporting the workpiece is installed on the top of the movable seat 21. The air inlet of the gas collecting hood 47 is located above the placement platform 22. By setting the movable seat 21, the movable seat 21 can be controlled from the outside of the housing 1 to drive the placement platform 22 to move, so as to achieve the effect of uniform contact between the surface of the workpiece and the light beam.

[0027] In practical use, the chamber door is opened and the workpiece is placed on top of the placement platform 22. The chamber door is then closed, and nitrogen gas is discharged into the protective airflow cylinder 34 through the air inlet pipe 35. Simultaneously, the laser 31 is activated to perform impact strengthening on the workpiece, and the air pump 41 is activated simultaneously to filter the gas inside the chamber 1 through the filter plate 46 in the filter box 44 and then discharge it through the exhaust pipe 42. Through the above-mentioned device, the filtration effect of toxic gases and metal particulate dust is achieved, avoiding air pollution and improving the efficiency of the protective device.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A light path protection device for laser shock peening, characterized in that: Includes a housing (1), with an automatically adjustable bearing assembly (2) installed at the bottom of the inner cavity of the housing (1), a laser assembly (3) installed above the bearing assembly (2), and a filter assembly (4) for filtering gas installed on the inner side wall of the housing (1). The filter assembly (4) includes an air pump (41) bolted to the top of the housing (1). The exhaust end of the air pump (41) is provided with an exhaust pipe (42). The air inlet end of the air pump (41) is connected to an exhaust pipe (43) that penetrates into the interior of the housing (1). One end of the exhaust pipe (43) is connected to a filter box (44). The filter box (44) is fixedly installed in the middle of the inner side wall of the housing (1). The bottom of the filter box (44) is connected to a gas collection hood (47) for collecting gas through a connecting pipe.

2. A laser shock peening light path protection device according to claim 1, characterized in that: The filter box (44) has several sets of concave grooves (45) through one end, and a set of filter plates (46) are movably inserted inside each set of concave grooves (45).

3. A laser shock peening light path protection device according to claim 1, characterized in that: The laser assembly (3) includes a laser (31) bolted to the top of the housing (1), and a sealed optical tube (32) for beam protection is connected to the bottom of the laser (31).

4. A laser shock peening light path protection device according to claim 3, characterized in that: One end of the closed light tube (32) extends into the interior of the housing (1), and a lens mount (33) for a detachable focusing lens is installed at the bottom of the closed light tube (32).

5. A laser shock peening light path protection device according to claim 4, characterized in that: The bottom of the mirror base (33) is equipped with a protective airflow cylinder (34), and the top of the box (1) is equipped with an air inlet pipe (35) that runs through it, with one end of the air inlet pipe (35) connected to the middle of the protective airflow cylinder (34).

6. A laser shock peening light path protection device according to claim 4, characterized in that: The bearing assembly (2) includes a movable seat (21) fixedly installed at the bottom of the inner cavity of the box (1), and a placement platform (22) for supporting the workpiece is installed on the top of the movable seat (21). The air inlet of the gas collection hood (47) is located above the placement platform (22).

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