CN110932061A

CN110932061A - Laser device

Info

Publication number: CN110932061A
Application number: CN202010103396.8A
Authority: CN
Inventors: 蔡明元; 刘树林
Original assignee: Nanjing Taipusen Automation Equipment Co Ltd
Current assignee: Nanjing Taipusen Automation Equipment Co Ltd
Priority date: 2020-02-20
Filing date: 2020-02-20
Publication date: 2020-03-27
Anticipated expiration: 2040-02-20
Also published as: CN110932061B

Abstract

The application relates to the laser field, specifically discloses a laser device, and this laser device includes: the laser device comprises a first cavity, a second cavity and a laser source, wherein the first cavity is internally provided with a laser source with an optical lens assembly; and a second chamber separated from the first chamber by a partition wall provided with an optical path through hole communicating the first chamber and the second chamber to allow the laser light generated by the laser light source to be emitted from the first chamber to the second chamber through the partition wall; the suction source and the air inlet source are communicated with the inner cavity of the second cavity, the air suction amount of the suction source is greater than the air inlet amount of the air inlet source, and the air pressure in the second cavity is lower than the air pressure in the first cavity; and the pressure source is communicated with the inner cavity of the first cavity so as to enable the air pressure in the first cavity to be higher than the air pressure in the second cavity in the working state. The technical scheme of this application can play the guard action to laser light source's optics lens subassembly.

Description

Laser device

Technical Field

The present application relates to the field of lasers, and more particularly, to a laser device.

Background

Laser light is widely used in various industrial fields due to its optical characteristics, and can be used for inspection measurement, processing of a workpiece, and the like.

In order to avoid accidental injury to surrounding operators while the laser is working, a protective shield is usually provided. The laser light source and the work object (such as a workpiece) are both arranged in the protective cover. During operation, the protective cover is required to be opened or closed frequently, so that on one hand, external impurities are inevitably introduced into the protective cover, and on the other hand, impurities generated by the optical treatment of the working object by the laser are also inevitably left in the protective cover. These external or internal impurities can adversely affect the laser light source, especially by contaminating the optical lens components of the laser light source.

Therefore, how to overcome the above-mentioned drawbacks of the conventional solutions at least to some extent is a technical problem to be solved in the art.

Disclosure of Invention

In view of the above, the present application provides a laser device, which can solve the above technical problems at least to some extent.

According to the present application, there is provided a laser device comprising: the laser device comprises a first cavity, a second cavity and a laser source, wherein the first cavity is internally provided with a laser source with an optical lens assembly; and a second chamber spaced from the first chamber by a partition wall provided with an optical path through-hole communicating the first and second chambers to allow the laser light generated by the laser light source to be emitted from the first chamber to the second chamber through the partition wall; the suction source and the air inlet source are communicated with the inner cavity of the second cavity, the air suction amount of the suction source is greater than the air inlet amount of the air inlet source, and the air pressure in the second cavity is lower than the air pressure in the first cavity; and the pressure source is communicated with the inner cavity of the first cavity, so that the air pressure in the first cavity is higher than the air pressure in the second cavity in a working state.

Preferably, the partition wall is detachably mounted between the first and second chambers.

Preferably, the cross-sectional shape of the light path through hole is circular or polygonal.

Preferably, an opening aligned with the light path through hole is provided on a side wall of the second chamber facing the light path through hole.

Preferably, the opening is closable or openable.

Preferably, in an operating state, a negative pressure environment is formed in the second chamber; or a positive pressure environment is in the first chamber.

Preferably, in the operating state, the laser device has an air flow from the first chamber to the second chamber through the optical path through hole.

Preferably, the temperature within the first chamber is adjustable; and the first chamber has a filter or a sealing member for shielding foreign substances.

According to the technical scheme of this application, will (be provided with the laser light source that has the optics lens subassembly) through the division wall interval between first cavity and the second cavity, and be provided with the pressure source that is linked together with the inner chamber of first cavity and the suction source and the air inlet source that are linked together with the inner chamber of second cavity for atmospheric pressure in the first cavity is higher than the atmospheric pressure in the second cavity in laser device working process, and the impurity of production is difficult to enter into first cavity from the second cavity, thereby provides the protection to the optics lens subassembly of laser light source.

Additional features and advantages of the present application will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate an embodiment of the invention and, together with the description, serve to explain the invention. In the drawings:

FIG. 1 is a schematic perspective view of a laser apparatus according to a preferred embodiment of the present application;

fig. 2 is a cross-sectional view of the laser device of fig. 1.

Detailed Description

The terms "first," "second," and the like, as used herein, are used for distinguishing between similar elements and not intended to limit the scope of the present disclosure. The terms may be interchanged.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, the present application discloses a laser apparatus including: a first chamber 10, wherein a laser source with an optical lens assembly is arranged in the first chamber 10; and a second chamber 11, the second chamber 11 being spaced apart from the first chamber 10 by a partition wall 12, the partition wall 12 being provided with an optical path through hole 121 communicating the first chamber 10 and the second chamber 11 to allow the laser light generated by the laser light source to be emitted from the first chamber 10 to the second chamber 11 through the partition wall 12; the suction source and the air inlet source are communicated with the inner cavity of the second chamber 11, the air suction amount of the suction source is greater than the air inlet amount of the air inlet source, and the air pressure in the second chamber 11 is lower than the air pressure in the first chamber 10; and a pressure source communicating with the inner cavity of the first chamber 10 to make the air pressure in the first chamber 10 higher than the air pressure in the second chamber 11 in the working state.

Conventionally, during the operation of the laser device, external impurities and impurities resulting from the optical treatment of the work object by the laser inevitably remain in the protective cover of the laser device. These external and internal impurities can adversely affect the laser source, especially contaminate the optical lens assembly of the laser source, thereby affecting the optical performance of the laser device.

According to the technical scheme of the application, the first cavity 10 (provided with the laser light source with the optical lens assembly) is separated from the second cavity 11 through the partition wall 12, and the pressure source communicated with the inner cavity of the first cavity 10 and the suction source and the air inlet source communicated with the inner cavity of the second cavity 11 are arranged, so that the air pressure in the first cavity 10 is higher than the air pressure in the second cavity 11 in the working process of the laser device, the impurities are difficult to enter the first cavity 10 from the second cavity 11, the optical lens assembly of the laser light source in the first cavity 10 is protected, and the optical lens assembly is prevented from being polluted.

In a preferred embodiment, the laser device comprises a pressure source in communication with the interior of the first chamber 10, the pressure source comprising a filter mechanism to filter the gas prior to entering the first chamber 10. In addition, the gas of the pressure source may be air of the external environment or may be relatively clean inert gas supplied through a pipeline. The gas is continuously injected into the first chamber 10 by the pressure source so that the pressure in the first chamber 10 is higher than the atmospheric pressure or higher than the pressure in the second chamber 11. The pressure source may be a positive pressure air pump.

In another preferred embodiment, the laser device comprises a suction source communicated with the inner cavity of the second chamber 11, and when the air pressure of the second chamber 11 is lower than the atmospheric pressure under the action of the suction source, in order to avoid more external impurities from entering the second chamber 11, the laser device preferably comprises a gas inlet source corresponding to the suction source, and the gas inlet source comprises a filtering mechanism, so that the gas enters the second chamber 11 after being filtered. Under the combined action of the gas inlet source and the suction source, impurities in the second chamber 11 can be taken away through the flow of gas in time. The gas of the intake source may be air of the external environment or relatively clean inert gas supplied through a pipe. The flow rate of the inlet source per unit time is less than the flow rate of the suction source per unit time, so that the air pressure in the second chamber 11 is lower than the air pressure in the first chamber 10. The suction source may be a negative pressure air pump (e.g., a vacuum pump).

It will be appreciated that the laser device may comprise only one of the two embodiments described above, and that it is preferable to use a combination of a pressure source in communication with the inner cavity of the first chamber 10 and a suction source and an air inlet source in communication with the inner cavity of the second chamber 11 to achieve a better pressure regulation effect.

As shown in fig. 2, a partition wall 12 is disposed between the second chamber 11 and the first chamber 10 for separating the second chamber 11 from the first chamber 10. Since the laser light generated from the laser light source is emitted from the first chamber 10 to the second chamber 11 through the partition wall 12, the partition wall is preferably made of a heat-resistant material, and may include a heat-resistant plastic or a heat-resistant metal, thereby increasing the lifespan of the partition wall 12. Preferably, a partition wall 12 is detachably installed between the first chamber 10 and the second chamber 11, facilitating replacement of parts for maintenance. In other embodiments, the partition wall 12 may be integrally provided.

The optical path through-hole 121 is provided at a position corresponding to the optical path of the laser light on the partition wall 12, for allowing the laser light to be smoothly emitted from the first chamber 10 to the second chamber 11 through the partition wall 12. The cross-sectional shape of the optical path through hole 121 may be different, for example, the cross-sectional shape of the optical path through hole 121 may be circular or polygonal (e.g., rectangular, square, etc.), according to different working conditions. The cross-sectional shape of the optical path through-hole 121 is preferably circular. The diameter of the optical path through hole 121 is adjusted according to the influence range of the laser generated by the laser device, so that the interference on the laser path caused by the over-small diameter of the optical path through hole 121 is avoided. In addition, the cross-sectional area of the optical path through hole 121 should not be too large, which would reduce the difficulty of impurities entering the first chamber 10 through the optical path through hole 121.

With the laser device provided in the present application, in order to allow the generated laser light to optically process an external work object, the second chamber 11 is provided with an opening that allows the laser light to pass to the outside. Preferably, as shown in fig. 2, an opening 112 aligned with the light path through hole 121 is provided on a side wall 111 of the second chamber 11 facing the light path through hole 121. During the operation of the laser device, the opening 112 may be directly attached to the surface of the work object, so that when the work object is optically processed by laser, the generated impurities are prevented from being dissipated into the surrounding environment as much as possible. In addition, an elastic sealing member may be preferably provided at an outer circumferential edge of the opening 112 to further close a gap with the work object. For example, the resilient seal may be a sealing ring surrounding the opening 112.

In order to keep the interior of the second chamber 11 clean when the laser device is not operating, the opening 112 of the second chamber 11 communicating with the external environment is preferably closed. Thus, the opening 112 is preferably closable or openable. This can be achieved by designing with a removable cover.

By any one of the above embodiments or a combination thereof, the pressure environment of the laser device in a working state can be regulated and controlled. For example, the second chamber 11 may be designed to have a negative pressure environment therein; or the first chamber 10 may be designed to have a positive pressure environment therein. The positive pressure environment refers to the air pressure being greater than the atmospheric pressure in the external environment, and the negative pressure environment refers to the air pressure being less than the atmospheric pressure in the external environment. The above-mentioned "positive pressure" and "negative pressure" are also to be understood as relative concepts, i.e. the pressure of the air in the first chamber 10 is greater than the pressure of the air in the second chamber 11.

It can be understood that the second chamber 11 and the first chamber 10 may be set to be a negative pressure environment and a positive pressure environment, respectively, or only the pressure environment in one of the chambers may be adjusted, for example, only the negative pressure environment in the second chamber 11 or only the positive pressure environment in the first chamber 10 is adjusted.

By regulating the air pressure environment in the laser device in the above manner, for example, the air pressure in the second chamber 11 is made smaller than the air pressure in the first chamber 10, so that the laser device has an air flow flowing from the first chamber 10 to the second chamber 11 through the optical path through hole 121 in an operating state. Thereby further preventing impurities in the second chamber 11 from entering the first chamber 10.

As shown in fig. 2, the first chamber 10 is relatively closed, so that, in order to prevent heat accumulation in the first chamber 10 during operation of the laser device, it is preferable that the temperature in the first chamber 10 is adjustable, and the first chamber 10 has a filter or a sealing member for shielding foreign substances.

The method for regulating the temperature in the first chamber 10 may comprise providing cooling means, such as liquid or air cooling, outside the chamber; the method can also comprise introducing low-temperature gas into the first chamber 10, so that the gas in the first chamber 10 is in a flowing state continuously, and heat is taken away. In order to prevent the entry of foreign materials, a portion where a mounting gap or a mounting hole may exist is sealed by the sealing member, and the sealing member may include an elastic sealing member having heat resistance, a sealant, or the like. The entry of impurities is further reduced by filtering of the gas entering the first chamber 10 by means of a filter.

As can be seen from the above description, according to the technical solution of the present application, the first chamber (where the laser light source with the optical lens assembly is disposed) and the second chamber are separated by the partition wall, and the pressure source communicated with the inner cavity of the first chamber 10, and the suction source and the intake source communicated with the inner cavity of the second chamber 11 are disposed, so that the air pressure in the first chamber 10 is higher than the atmospheric pressure or higher than the air pressure in the second chamber 11, and the air pressure in the second chamber 11 is lower than the atmospheric pressure or lower than the air pressure in the first chamber 10 during the operation of the laser device, and therefore impurities and external impurities generated during the operation of the laser device are difficult to enter the first chamber from the second chamber. Thereby providing protection for the optical lens assembly of the laser light source.

The preferred embodiments of the present application have been described in detail above, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications all belong to the protection scope of the present application.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described in the present application.

In addition, any combination of the various embodiments of the present application is also possible, and the same should be considered as disclosed in the present application as long as it does not depart from the idea of the present application.

Claims

1. Laser device, characterized in that, this laser device includes:

the laser device comprises a first chamber (10), wherein a laser light source with an optical lens assembly is arranged in the first chamber (10);

a second chamber (11), the second chamber (11) being spaced apart from the first chamber (10) by a partition wall (12), the partition wall (12) being provided with an optical path through-hole (121) communicating the first chamber (10) and the second chamber (11) to allow laser light generated by the laser light source to be emitted from the first chamber (10) to the second chamber (11) through the partition wall (12);

the suction source and the air inlet source are communicated with the inner cavity of the second chamber (11), the air suction amount of the suction source is larger than the air inlet amount of the air inlet source, and the air pressure in the second chamber (11) is lower than the air pressure in the first chamber (10); and

a pressure source communicating with the inner cavity of the first chamber (10) to increase the pressure in the first chamber (10) relative to the pressure in the second chamber (11) in the operating state.

2. Laser device according to claim 1, characterized in that the partition wall (12) is detachably mounted between the first chamber (10) and the second chamber (11).

3. The laser device according to claim 1, wherein the cross-sectional shape of the optical path through-hole (121) is circular or polygonal.

4. The laser device according to claim 1, characterized in that an opening (112) aligned with the optical path through hole (121) is provided on a side wall (111) of the second chamber (11) facing the optical path through hole (121).

5. Laser device according to claim 4, characterized in that the opening (112) is closable or openable.

6. Laser device according to any one of claims 1-5, characterized in that in the working state, a negative pressure environment is present in the second chamber (11); or a positive pressure environment is arranged in the first chamber (10).

7. Laser device according to claim 6, characterized in that it has, in the operating state, a gas flow from the first chamber (10) to the second chamber (11) through the light path through hole (121).

8. Laser device according to claim 6,

the temperature inside the first chamber (10) is adjustable; and

the first chamber (10) has a filter or a seal for shielding foreign matter.