Laser device

Abstract

The invention relates to a laser which comprises a resonant cavity. The laser end cover is arranged at one end of the resonant cavity, and a first light path hole is formed in the laser end cover; the complete machine frame is located in the light path propagation direction of the laser end cover, and a gap is formed between the complete machine frame and the laser end cover; the complete machine frame is provided with a second light path hole, and the second light path hole is aligned with the first light path hole; the sealing hose is arranged between the laser end cover and the complete machine frame; the sealing hose is hollow so that the first light path hole and the second light path hole can be communicated in a sealed mode. The laser provided by the invention is more suitable for the requirements of miniaturized and lightweight products, the weight of the whole machine is reduced, and the reliability of the product in a harsh working environment is higher.

Description

Technical Field

[0001] The present invention relates to the field of lasers, and in particular to a laser. Background Art

[0002] At present, all CO2 gas lasers that use RF slats or RF waveguide technology routes use thick tube wall resonant cavity design in order to effectively suppress the escape of CO2 gas and ensure the overall rigidity. There will be a certain amount of deformation when the temperature changes. The sealing of the laser and the external optical path usually adopts the method of pressing the sealing ring. When the weight requirement of the whole machine is not high, each component has good rigidity to resist the stress deformation caused by the pressing sealing ring. However, after the whole machine product is miniaturized and lightweight, the rigidity of each component has decreased. It is difficult for the components of the laser whole machine product to adapt to the needs of miniaturization and lightweight, and the reliability of the product in harsh working environments is low. Summary of the invention

[0003] The purpose of the present invention is to provide a laser to solve the problem that the components of the laser complete product are difficult to adapt to the requirements of miniaturization and lightness, and the product has low reliability in harsh working environments.

[0004] The laser of the present invention comprises:

[0005] Resonant cavity;

[0006] A laser end cover, arranged at one end of the resonant cavity, and having a first optical path hole;

[0007] The whole machine frame is located in the optical path propagation direction of the laser end cover and is spaced apart from the laser end cover; the whole machine frame is provided with a second optical path hole, and the second optical path hole is aligned with the first optical path hole;

[0008] A sealing hose is arranged between the laser end cover and the whole machine frame; the sealing hose is hollow to seal and connect the first optical path hole and the second optical path hole.

[0009] Optionally, a first sleeve is provided on the laser end cover, the first sleeve protrudes toward the direction of the whole machine frame, and the first end of the sealing hose is provided on the first sleeve.

[0010] Optionally, the first end of the sealing hose includes a first flange structure, which extends circumferentially outward from the end surface of the sealing hose; the laser also includes a first clamping structure, which clamps and fixes the first flange structure to the surface of the laser end cover.

[0011] Optionally, the first clamping structure includes a pressure ring and a spacer ring; the pressure ring is fixed to the laser end cover via a fastener; the spacer ring is arranged between the pressure ring and the first flange structure, and the first flange structure is clamped and fixed under the action of the pressure ring.

[0012] Optionally, the contact surface between the pressure ring and the spacer ring includes matching inclined surfaces.

[0013] Optionally, the second end of the sealing hose includes a second flange structure, which extends circumferentially outward from the end surface of the sealing hose; the laser also includes a second clamping structure, which clamps and fixes the second flange structure to the surface of the whole machine frame.

[0014] Optionally, the second clamping structure includes a reflector base plate arranged on a side of the whole machine frame away from the laser end cover; the reflector base plate has a third optical path hole, and the third optical path hole is aligned with the second optical path hole; the second flange structure is located between the reflector base plate and the whole machine frame, and the reflector base plate is fixed to the whole machine frame to clamp the second flange structure.

[0015] Optionally, a second sleeve is provided on the reflector bottom plate, the second sleeve protrudes toward the inner wall of the second optical path hole, and the second end of the sealing hose is provided on the second sleeve.

[0016] Optionally, the side of the whole machine frame close to the reflector base plate has an annular protrusion structure, and the side of the reflector base plate close to the whole machine frame has an annular groove matching the annular protrusion structure, and the annular protrusion structure enters the annular groove; the shape of the second flange structure matches the gap between the annular protrusion structure and the annular groove.

[0017] Optionally, the sealing hose is made of silicone or rubber.

[0018] The laser of the present invention arranges the laser end cap and the whole machine frame at intervals and uses a non-rigid sealing hose as a sealing connection between the two; it avoids direct contact between the laser end cap and the whole machine frame, which not only ensures the sealing of the optical path, but also ensures the deformation of the whole machine frame and the laser end cap. This makes the whole machine frame and the laser end cap not need to resist stress deformation, can better adapt to the needs of miniaturized and lightweight products, is conducive to reducing the weight of the whole machine, and the product has higher reliability in harsh working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the local structure of the laser provided in this embodiment;

[0020] Figure 2 It is a schematic diagram of the local structure of a laser in the related art;

[0021] Figure 3 for Figure 1 A magnified schematic diagram of area A;

[0022] Figure 4 A local three-dimensional structure interface diagram of the laser provided in this embodiment;

[0023] Figure 5 A partial exploded view of the laser provided in this embodiment;

[0024] Figure 6 An exploded view of the assembly of one side of the laser end cap of the laser provided in this embodiment;

[0025] Figure 7 An exploded view of one side of the entire frame of the laser provided in this embodiment;

[0026] Figure 8 A schematic cross-sectional view of the sealing hose provided in this embodiment;

[0027] Fig. 9 A schematic diagram of the cross-sectional coordination of the spacer ring and the pressure ring provided in this embodiment;

[0028] Fig.10 A schematic diagram of the assembly of the whole machine frame and the reflector base plate provided in this embodiment;

[0029] Description of reference numerals:

[0030] 1-resonant cavity; 2-laser end cover; 21-first optical path hole; 22-first sleeve; 3-whole machine frame; 31-second optical path hole; 32-annular protrusion structure; 4-sealing hose; 41-first flange structure; 42-second flange structure; 5-reflector bottom plate; 51-third optical path hole; 52-second sleeve; 53-annular groove; 6-first clamping structure; 61-pressing ring; 62-spacer ring; 7-sealing ring. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Embodiment 1:

[0034] This embodiment provides a laser, which may be a laser that requires a sealed environment, such as a gas laser such as a CO2 gas laser. Figure 1 , Figures 3 to 9 The laser of this embodiment includes but is not limited to a resonant cavity 1, a laser end cap 2, a whole machine frame 3, and a sealing hose 4. It should be understood that for the remaining parts of the laser that may be involved and not described in this embodiment, without affecting the structure involved in this embodiment, reference can be made to the laser structure in the relevant technology. For example, although not shown in the drawings of this embodiment, a sealed laser rear end cap is provided at the other end of the resonant cavity.

[0035] In this embodiment, the laser end cap 2 is disposed at one end of the resonant cavity 1, specifically, at one end of the resonant cavity 1 in the direction of light emission. The laser end cap 2 has a first light path hole 21, which is used for light to pass through, so that the light inside the resonant cavity 1 can be emitted.

[0036] The whole machine frame 3 is a frame structure located outside the laser end cap 2. It is located in the optical path propagation direction of the laser end cap 2. It should be noted that, unlike the sealing setting method of pressing the whole machine frame 3 and the laser end cap 2 in the related art, there is a certain interval between the laser end caps 2 described in this embodiment. The whole machine frame 3 has a second optical path hole 31, and the second optical path hole 31 is aligned with the first optical path hole 21, that is, the light emitted from the first optical path hole 21 will also pass through the second optical path hole 31. In some embodiments, the whole machine frame 3 and the resonant cavity 1 can be made of a material with a certain rigidity, and the materials of the whole machine frame 3 and the resonant cavity 1 can be different. In the laser of the present invention, even if the materials of the whole machine frame 3 and the resonant cavity 1 have different thermal expansion coefficients and undergo different deformations, the sealing of the optical path and the reliability of the structure can still be ensured. Exemplarily, in order to ensure structural rigidity, the whole machine frame 3 can use a harder 7-series aluminum alloy material, while the resonant cavity 1 uses a 6-series aluminum alloy material. In other implementations, the entire machine frame 3 and the resonant cavity 1 may also be made of other materials, and the two materials may be the same or different, which is not limited in this embodiment.

[0037] The sealing hose 4 is a flexible and deformable material, which is formed into a tubular structure and is hollow. The sealing hose 4 is arranged between the laser end cover 2 and the whole machine frame 3, and the hollow area seals and connects the first optical path hole 21 and the second optical path hole 31. That is, in this embodiment, although there is a gap between the laser end cover 2 and the whole machine frame 3, the arrangement of the sealing hose 4 at the gap allows the optical path of the laser to remain sealed. In some embodiments, the sealing hose 4 can be made of materials such as silicone or rubber. In this embodiment, the light in the resonant cavity 1 will pass through the first optical path hole 21, the hollow area of ​​the sealing hose 4, and the second optical path hole 31 in sequence, and the optical path remains sealed.

[0038] like Figure 2As shown, in the prior art, the whole machine frame 3 and the laser end cover 2 are pressed tightly and sealed by a sealing ring 7, and there is direct metal hard contact between the whole machine frame 3 and the laser end cover 2. When the temperature changes, the whole machine frame 3 and the laser end cover 2 will produce different deformations. If the two are directly fixed, the whole machine frame 3 will squeeze the laser end cover 2, causing the position of the first optical path hole 21 in the laser end cover 2 to change, resulting in a decrease in the beam quality. The laser of this embodiment is arranged at intervals between the laser end cover 2 and the whole machine frame 3, and a non-rigid sealing hose 4 is used as a sealing connection between the two; the direct hard contact between the laser end cover 2 and the whole machine frame 3 is avoided, which not only ensures the sealing of the optical path, but also ensures the deformation of the whole machine frame 3 and the laser end cover 2. In addition, the sealing contact part between the laser end cover 2 and the whole machine frame 3 is changed from a rigid material such as metal to a flexible material such as silicone or rubber, so that the weight of the whole machine is also lighter. It can be seen that the structure of the laser provided in this embodiment makes it unnecessary for the whole machine frame 3 and the laser end cover 2 to resist stress deformation, which can better adapt to the needs of miniaturization and lightweight products, is conducive to reducing the weight of the whole machine, and the product has higher reliability in harsh working environments.

[0039] The laser end cap 2 may be provided with a first sleeve 22, which protrudes in the direction of the whole machine frame 3, that is, the first sleeve 22 is extended from the laser end cap 2 in the direction of the whole machine frame 3. The first sleeve 22 can enter the spacing area between the laser end cap 2 and the whole machine frame 3 to a certain extent. The first sleeve 22 is used to cooperate with the sealing hose 4, which assists in the installation of the sealing hose 4. In this embodiment, the first end of the sealing hose 4 is provided on the first sleeve 22, which can make the installation position of the sealing hose 4 accurate, and the first sleeve 22 protrudes and extends to the spacing area between the laser end cap 2 and the whole machine frame 3, which can prevent the sealing hose 4 from entering the optical path when it is squeezed and deformed and being burned by the laser, causing danger.

[0040] In some embodiments, the first end of the sealing hose 4 may include a first flange structure 41, which is a structure extending outward circumferentially from the end surface of the sealing hose 4. The first flange structure 41 increases the area that can fit with the surface of the laser end cover 2, making it easy to fix while also ensuring the sealing performance.

[0041] The laser also includes a first clamping structure 6, which clamps and fixes the first flange structure 41 to the surface of the laser end cover 2. The first clamping structure 6 may include a clamping ring 61 and a fastener. The clamping ring 61 is pressed on the first flange structure 41, and the first flange structure 41 is clamped to the surface of the laser end cover 2 by fastening and fixing the clamping ring 61 with the fastener. The fasteners include but are not limited to screws, etc. It should be understood that, corresponding to the structure of the fasteners, the first clamping structure 6 may also include a structure provided on the laser end cover 2 to cooperate therewith, such as a threaded hole. For the matching structure and form of various fasteners, those skilled in the art can set them according to the actual structural characteristics of the fasteners. They may be separate parts or structures provided on the laser end cover 2 or other components to cooperate therewith, which will not be elaborated in this embodiment.

[0042] In some embodiments, the first clamping structure 6 includes a pressure ring 61 and a spacer ring 62; the pressure ring 61 is fixed to the laser end cover 2 by a fastener. The spacer ring 62 is arranged between the pressure ring 61 and the first flange structure 41, and the first flange structure 41 is clamped and fixed under the action of the pressure ring 61. The spacer ring 62 is a structure that is independent and movable from the pressure ring 61 and the first flange structure 41, which is annular and sleeved on the outside of the sealing hose 4. The provision of the spacer ring 62 prevents the pressure ring 61 responsible for fastening and fixing from directly contacting the first flange structure 41, which can prevent the sealing surface where the pressure ring 61 and the sealing hose 4 are in contact from uncontrollable displacement during installation and fixing, thereby ensuring the reliability of the seal.

[0043] like Fig. 9 As shown, in some embodiments, the contact surface between the pressure ring 61 and the spacer ring 62 includes matching inclined surfaces. The matching inclined surfaces of the pressure ring 61 and the spacer ring 62 can better guide the spacer ring 62 to compress the first flange structure 41 of the sealing hose 4 during the process of fixing and locking the pressure ring 61. The contact surface between the pressure ring 61 and the spacer ring 62 can be a completely inclined surface or a partially matched inclined surface. In practical applications, there are at least partial inclined surface areas on the pressure ring 61 and the spacer ring 62, and the inclined surfaces of the two can be positioned relative and in contact during the fixing process to achieve guidance. Generally speaking, the inclinations of the two inclined surfaces are also the same or similar.

[0044] like Figure 8 As shown, in some embodiments, the second end of the sealing hose 4 includes a second flange structure 42, and the second flange structure 42 extends outward from the end surface of the sealing hose 4 in a circumferential direction. In this embodiment, the first end and the second end of the sealing hose 4 are opposite ends. The laser also includes a second clamping structure, and the second clamping structure clamps and fixes the second flange structure 42 to the surface of the whole machine frame 3. The second flange structure 42 increases the area that can be fitted with the whole machine frame 3, which is easy to fix while also ensuring the sealing performance.

[0045] The second pressing structure has a similar function to the first pressing structure 6, which presses and fixes the second end of the sealing hose 4 so that the second end of the sealing hose 4 has good sealing performance. In practical applications, the second pressing structure can be a structure dedicated to pressing the second flange structure 42, or other original structures of the laser can be used to press the second flange structure 42.

[0046] In some embodiments, the second clamping structure includes a reflector base plate 5 disposed on a side of the whole machine frame 3 away from the laser end cover 2. The reflector base plate 5 has a third optical path hole 51, and the third optical path hole 51 is aligned with the second optical path hole 31. The second flange structure 42 is located between the reflector base plate 5 and the whole machine frame 3, and the reflector base plate 5 is fixed to the whole machine frame 3 to clamp the second flange structure 42. In this embodiment, the reflector base plate 5 is used as the second clamping structure to save the number of parts in the laser, which is conducive to miniaturization and lightweight design. The whole machine frame 3 and the reflector base plate 5 can be fastened by structures such as screws and screw holes. While fixing the whole machine frame 3 and the reflector base plate 5, the fixing of the sealing hose 4 and the sealing of the optical path can be ensured at the same time.

[0047] like Figure 7 As shown, in some embodiments, a second sleeve 52 may be provided on the reflector bottom plate 5, the second tube protrudes toward the inner wall of the second optical path hole 31, and the second end of the sealing hose 4 is provided on the second sleeve 52. The second sleeve 52 is used to cooperate with the sealing hose 4, and it can also assist in the installation of the sealing hose 4. The second end of the sealing hose 4 is provided on the second sleeve 52, which can make the installation position of the sealing hose 4 accurate, and the second sleeve 52 protrudes and extends to the interval area between the laser end cover 2 and the whole machine frame 3, which can also prevent the sealing hose 4 from entering the optical path and being burned by the laser when it is squeezed and deformed, causing danger. By using the reflector bottom plate 5 as the second compression structure, the structure in the laser is reused, making the design of the laser more miniaturized and lightweight.

[0048] like Figure 7 As shown, in some embodiments, the whole machine frame 3 has an annular protrusion structure 32 on one side close to the reflector bottom plate 5, and the reflector bottom plate 5 has an annular groove 53 matching the annular protrusion structure 32 on one side close to the whole machine frame 3, and the annular protrusion structure 32 enters the annular groove 53. The shape of the second flange structure 42 matches the gap between the annular protrusion structure 32 and the annular groove 53. Through the annular protrusion and groove, the second flange structure 42 can be fixed more stably, and the added turning point can also further ensure the airtightness of the laser.

[0049] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present disclosure that are equivalent, modified, omitted, combined (e.g., various embodiments intersecting), adapted or changed. It is not limited to the examples described in this specification or during the implementation of this application, and its examples will be interpreted as non-exclusive.

[0050] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, those of ordinary skill in the art may use other embodiments when reading the above description.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser, characterized in that: include: Resonant cavity; A laser end cover, arranged at one end of the resonant cavity, and having a first optical path hole; The whole machine frame is located in the optical path propagation direction of the laser end cover and is spaced apart from the laser end cover; the whole machine frame is provided with a second optical path hole, and the second optical path hole is aligned with the first optical path hole; A sealing hose is arranged between the laser end cover and the whole machine frame; the sealing hose is hollow to seal and connect the first optical path hole and the second optical path hole.

2. The laser according to claim 1, characterized in that The laser end cover is provided with a first sleeve, the first sleeve protrudes toward the direction of the whole machine frame, and the first end of the sealing hose is provided on the first sleeve.

3. The laser according to claim 1, characterized in that The first end of the sealing hose includes a first flange structure, which extends circumferentially outward from the end surface of the sealing hose; the laser also includes a first clamping structure, which clamps and fixes the first flange structure to the surface of the laser end cover.

4. The laser according to claim 3, characterized in that The first clamping structure includes a clamping ring and a spacer ring; the clamping ring is fixed to the laser end cover via a fastener; the spacer ring is arranged between the clamping ring and the first flange structure, and the first flange structure is clamped and fixed under the action of the clamping ring.

5. The laser according to claim 4, characterized in that The contact surfaces of the pressure ring and the spacer ring include matching inclined surfaces.

6. The laser according to claim 3, characterized in that The second end of the sealing hose includes a second flange structure, which extends circumferentially outward from the end surface of the sealing hose; the laser also includes a second clamping structure, which clamps and fixes the second flange structure to the surface of the whole machine frame.

7. The laser according to claim 6, characterized in that The second clamping structure includes a reflector base plate arranged on a side of the whole machine frame away from the laser end cover; the reflector base plate has a third optical path hole, and the third optical path hole is aligned with the second optical path hole; the second flange structure is located between the reflector base plate and the whole machine frame, and the reflector base plate is fixed to the whole machine frame to clamp the second flange structure.

8. The laser according to claim 7, characterized in that A second sleeve is arranged on the bottom plate of the reflector, the second sleeve protrudes toward the inner wall of the second optical path hole, and the second end of the sealing hose is arranged on the second sleeve.

9. The laser according to claim 7, characterized in that The side of the whole machine frame close to the reflector base plate has an annular protrusion structure, and the side of the reflector base plate close to the whole machine frame has an annular groove matching the annular protrusion structure, and the annular protrusion structure enters the annular groove; the shape of the second flange structure matches the gap between the annular protrusion structure and the annular groove.

10. The laser according to any one of claims 1 to 9, characterized in that: The sealing hose is made of silicone or rubber.

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