Sealing structure of laser generator and laser generator

Abstract

The application discloses a sealing structure of a laser generator and the laser generator. The sealing structure of the laser generator comprises a connecting piece and a mirror seat. A detachable rubber tube is arranged on the connecting piece. The rubber tube is in interference fit with the mirror seat, so that a primary seal is formed. The rubber tube is provided with a convex edge which is embedded into a ring groove on the mirror seat, so that a secondary seal is formed. The multiple sealing mechanisms are used to ensure the sealing effect inside the laser generator and the quality and efficiency of the laser generation. The laser generator comprises the above sealing structure of the laser generator and a main body. The end of the main body is provided with the connecting piece. The connecting piece is in interference fit with the mirror seat through the rubber tube.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser equipment, in particular to a sealing structure of a laser generator and the laser generator. BACKGROUND

[0002] The laser cutting equipment has an important position in modern manufacturing industry, and the laser generator in the equipment can generate a laser beam. The existing laser generator mainly comprises a resonant cavity and a mirror, and the mirror is arranged at both ends of the resonant cavity. The laser is generated in the resonant cavity and is reflected between the mirrors at both ends, and is emitted from the mirror at one end. The laser cutting equipment has been widely applied in the fields of metal processing, wood processing, stone carving, etc.

[0003] The existing laser generator is provided with a sealing gasket between the assembly gap between the resonant cavity and the mirror, and the sealing ring is used to prevent dust and impurities from entering the resonant cavity. This design is too simple, and as the use time increases, once the sealing gasket is aged and fails, the environment in the resonant cavity will be polluted, thereby affecting the quality and efficiency of the laser beam, and problems such as unstable laser output power and reduced cutting precision will occur. SUMMARY

[0004] The main purpose of the present application is to provide a sealing structure of a laser generator and the laser generator, which aims to solve the problems of simple sealing structure of the laser generator and unstable sealing effect.

[0005] To achieve the above-mentioned purpose, the present application provides a sealing structure of a laser generator, which comprises a connecting piece and a mirror seat, and the mirror seat is detachably connected with the connecting piece. A detachable rubber tube is arranged on the connecting piece, a convex edge is arranged on the rubber tube, the convex edge is attached to the end face of the connecting piece, and a tapered surface is arranged in the rubber tube. The mirror seat is provided with a tapered tube in interference fit with the tapered surface, and the convex edge is embedded in the ring groove on the mirror seat.

[0006] Further, a limiting ring is arranged on the end face of the connecting piece corresponding to the mirror seat, and a first sealing ring is arranged between the limiting ring and the end face of the mirror seat.

[0007] Further, an external thread is arranged on the side of the connecting piece close to the mirror seat, and a connecting tube is arranged on the side of the mirror seat close to the connecting piece. An internal thread matched with the external thread is arranged on the inner wall of the connecting tube, and the outer wall of the connecting tube is polygonal.

[0008] Further, a plurality of convex edges uniformly spaced are arranged on the circumference of the side of the connecting part provided with the external thread, and a straight groove matched with the convex edges is arranged on the outer wall of the rubber tube.

[0009] Further, a detachable mirror is arranged on the end of the mirror seat away from the connecting piece, and a recess matched with the mirror is arranged on the mirror seat. A hinge-arranged pressing ring is arranged on the edge of the recess.

[0010] Further, the bottom of the groove is provided with a second sealing ring corresponding to the edge of the lens; and the edge of the pressing ring is provided with an elastic ring in contact with the lens.

[0011] Further, the mirror seat is provided with a second cooling cavity corresponding to the position of the lens, and the edge of the second cooling cavity is provided with a plurality of through pipes symmetrically distributed; one end of the through pipe is in communication with the second cooling cavity, and the other end is in communication with an external pipeline.

[0012] In another aspect of the present application, a laser generator comprises the sealing structure of the laser emitter and a main body, and the end of the main body is provided with a connecting piece. The main body comprises a resonant cavity, a flash tube and a ruby column. The ruby column is arranged in the resonant cavity, and the two ends of the resonant cavity are fixedly connected with the connecting piece through flanges, and the connecting piece is provided with a positioning groove matched with the end of the ruby column. The middle section of the flash tube is in a spiral shape and is wound around the circumference of the ruby column, and the two ends of the flash tube are provided with electrodes and extend to the outside of the resonant cavity.

[0013] Further, the two sides of the outside of the resonant cavity are provided with side covers, and a plurality of bidirectional bolts are arranged in the length direction of the side cover, the different side covers are fixedly connected through the bidirectional bolts, and the side cover and the outer wall of the resonant cavity form a first cooling cavity. The resonant cavities on the two sides of the resonant cavity are communicated through a communication pipe and are each provided with an external pipe in communication with an external pipeline.

[0014] Further, the contact surfaces of the different side covers and the contact surfaces between the side cover and the outer wall of the resonant cavity are coated with sealing glue.

[0015] Beneficial effects: during the process of assembling the mirror seat to the connecting piece, the taper cylinder is in interference fit with the rubber cylinder, so that the rubber cylinder is deformed radially, the outer wall of the rubber cylinder is tightly attached to the connecting piece, the tapered surface is tightly attached to the taper cylinder and has a large contact area, and the sealing effect is excellent. At the same time, the convex edge is embedded in the ring groove to form a secondary sealing at the bottom of the taper cylinder, and the sealing effect is further optimized. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a schematic diagram of the assembly of the mirror seat and the connecting part of the present application;

[0019] Figure 3 It is an exploded schematic diagram of the mirror seat and the connecting part of the present application;

[0020] Figure 4 This is a cross-sectional schematic diagram of the mirror mount of the present invention;

[0021] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0022] Figure 6 This is a cross-sectional schematic diagram of the connecting part of the present invention;

[0023] Figure 7 This is a cross-sectional schematic diagram of the rubber cartridge of the present invention.

[0024] Figure 8 This is a longitudinal cross-sectional view of the main body of the invention;

[0025] Figure 9 This is a cross-sectional schematic diagram of the main body of the present invention;

[0026] Explanation of icon numbers:

[0027] 1. Main body; 2. Side cover; 3. Lens mount; 4. Flash tube; 11. Connector; 12. Resonant cavity; 13. Base; 111. Flange; 112. Raised ridge; 113. External thread; 114. Limiting ring; 115. First sealing ring; 116. Positioning groove; 121. Ruby pillar; 21. First cooling cavity; 22. Connecting pipe; 23. External connecting pipe; 24. Bidirectional bolt; 31. Pressure ring; 32. Rubber sleeve; 33. Lens; 34. Conical cylinder; 35. Second cooling cavity; 311. Buckle; 312. Elastic ring; 321. Conical surface; 322. Raised edge; 323. Straight groove; 331. Groove; 332. Second sealing ring; 341. Connecting cylinder; 342. Annular groove; 351. Through pipe; 41. Electrode.

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] 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.

[0031] Furthermore, the use of terms such as "first" and "second" in this invention is 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 term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, provided that they are feasible for those skilled in the art. When 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.

[0032] like Figures 1-9 As shown, the sealing structure of a laser generator proposed in this invention includes a connector and a mirror mount 3, which are detachably connected to the connector 11. The connector 11 has a detachable rubber sleeve 32 with a raised edge 322 that fits against the end face of the connector 11. The rubber sleeve 32 has a conical surface 321 inside, and the mirror mount 3 has a conical cylinder 34 that is interference-fitted with the conical surface 321. The raised edge 322 is embedded in an annular groove 342 on the mirror mount 3. The rubber sleeve 32 is generally made of a high-temperature resistant and elastic rubber material, such as butyl rubber or acrylate. Since lasers, as high-energy beams, easily generate high temperatures locally in the equipment, a high-temperature resistant rubber sleeve 32 has a longer service life. The taper of the conical cylinder 34 is greater than that of the conical surface 321. When the conical cylinder 34 enters the conical surface 321, it applies pressure to the rubber sleeve 32, causing an interference fit between the conical cylinder 34 and the rubber sleeve 32. The rubber sleeve 32 undergoes radial deformation, and its outer wall fits tightly against the connector 11. The rubber sleeve 32 provides an effective seal, preventing external environmental factors (such as dust and moisture) from affecting the internal optical components, thus increasing the system's durability and performance stability. The conical surface 321 fits tightly against the conical cylinder 34 with a large contact area, resulting in excellent sealing. The flange 322, as an integral part of the rubber sleeve 32, serves as a limiting element, facilitating the determination of the axial position of the rubber sleeve 32 on the connector 11. When the lens mount 3 is assembled onto the connector 11, the flange 322 is embedded in the annular groove 342, which axially compresses the flange 322, forming another seal at the bottom of the conical cylinder 34. Through multiple sealing methods, the sealing effect between the connector 11 and the mirror mount 3 is effectively optimized.

[0033] The connector 11 has an external thread 113 on the side near the lens mount 3. The lens mount 3 has a connecting cylinder 341 on the side near the connector 11. The inner wall of the connecting cylinder 341 has an internal thread that mates with the external thread 113. The connector 11 and the lens mount 3 are connected by the engagement of the external thread 113 and the internal thread. The outer wall of the connecting cylinder 341 is polygonal, which facilitates the application of a larger torque to the connecting cylinder 341 using tools, improving the tightness of the assembly between the connector 11 and the lens mount 3, and improving the sealing effect of the rubber sleeve 32. On the side of the connecting part with the external thread 113, there are multiple evenly spaced protrusions 112 in the circumferential direction. The outer wall of the rubber sleeve 32 has straight grooves 323 that mate with the protrusions 112. With the engagement of the protrusions 112 and the straight grooves 323, the position of the rubber sleeve 32 in the circumferential direction of the connector 11 can be determined. This prevents the rubber sleeve 32 from rotating relative to the connector 11 during the process of screwing the lens mount 3 into the connector 11, reducing wear on the rubber sleeve 32. The contact surface between the connector 11 and the rubber sleeve 32 is coated with a high-temperature resistant coating (such as silicone ceramic glass coating, silicone aluminum powder coating, etc.). The high-temperature resistant coating can effectively protect the surface of the component, prevent oxidation and corrosion caused by high temperature, thereby extending the service life of the component and reducing maintenance costs.

[0034] The connector 11 is provided with a limiting ring 114 on the end face of the mirror base 3, and a first sealing ring 115 is provided between the limiting ring 114 and the end face of the mirror base 3. When the mirror base 3 is screwed into the connector 11, the end face of the mirror base 3 is axially compressed against the first sealing ring 115 fitted on the limiting ring 114, thereby improving the sealing performance between the end face of the mirror base 3 and the connector 11.

[0035] The lens mount 3 is used to fix and adjust the lens 33 in the laser generator, providing precise optical alignment and ensuring the quality and path stability of the laser beam. A detachable lens 33 is located at the end of the lens mount 3 furthest from the connector 11. The lens mount 3 has a groove 331 that mates with the lens 33, and a hinged pressure ring 31 is located on the edge of the groove 331. One side of the pressure ring 31 is connected to the edge of the groove 331 via a hinge, while the other side opposite the hinge is detachably connected to the edge of the groove 331 via a snap fastener 311. Alternatively, the pressure ring 31 can be fixed by connecting it to the edge of the groove 331 via multiple snap fasteners 311, allowing for quick assembly of the pressure ring 31 onto the lens mount 3 and easy replacement of new pressure rings, ensuring the stability of the lens 33 assembly. The freely opening and closing pressure ring 31 facilitates quick replacement of the lens 33. A second sealing ring 332 is provided at the bottom of the groove 331 corresponding to the edge of the lens 33. The second sealing ring 332 forms a sealing barrier at the edge of the lens 33 to prevent dust and impurities from penetrating into the assembly gap between the lens 33 and the groove 331. An elastic ring 312 is provided at the edge of the pressure ring 31 to contact the lens 33. The elastic ring 312 can form a buffer between the pressure ring 31 and the lens 33 to prevent damage to the lens 33 when the pressure ring 31 is closed; at the same time, the deformation of the elastic ring 312 prevents dust or other impurities from entering the gap between the lens 33 and the pressure ring 31.

[0036] A second cooling chamber 35 is provided at the position corresponding to the lens 33 in the mirror mount 3. Multiple symmetrically distributed through-tubes 351 are provided along the edge of the second cooling chamber 35. One end of each through-tube 351 is connected to the second cooling chamber 35, and the other end is connected to an external pipe. Cooling fluid enters the second cooling chamber 35 along the external pipe and continuously flows in and out of the second cooling chamber 35 through the through-tubes 351. As the laser passes through the lens 33, its temperature gradually increases. This rapid temperature change in the lens 33 alters the assembly gap, reducing the seal between components. Heat transfer between the second cooling chamber 35 and the bottom wall of the groove 331 carries away excess heat through the fluid within the second cooling chamber 35, thereby controlling the temperature of the lens 33 and maintaining a stable seal between the lens 33 and the mirror mount 3.

[0037] Another aspect of the present invention provides a laser generator comprising the aforementioned sealed structure and a main body 1. The main body 1 has a connector 11 at one end, which connects the main body 1 to a mirror mount 3, ensuring a secure connection between the mirror mount 3 and the main body 1, facilitating disassembly and maintenance, and improving system stability and reliability. The main body 1 is the core component of the laser generator, containing optical elements such as a resonant cavity 12, a flash tube 4, and ruby ​​pillars 121, providing stable laser output and protecting the internal laser medium and optical elements. The resonant cavity 12 contains ruby ​​pillars 121, and both ends of the resonant cavity 12 are fixedly connected to the connector 11 via flanges 111. The connector 11 has positioning grooves 116 that mate with the ends of the ruby ​​pillars 121. The middle section of the flash tube 4 is spiral-shaped and wraps around the circumference of the ruby ​​pillars 121. Electrodes 41 are provided at both ends of the flash tube 4, extending to the outside of the resonant cavity 12 and electrically connected to an external power source.

[0038] The resonant cavity 12 is a key component of the laser. Photons are reflected back and forth within it to gain gain, thereby reaching the threshold of laser oscillation. The flash tube 4 is a light source used to excite the laser medium. A high voltage is provided through electrodes 41, causing the gas (usually xenon) inside the flash tube 4 to discharge and emit light. The middle section of the flash tube 4 is spirally wound around the circumference of the ruby ​​pillar 121, enabling uniform excitation of the ruby ​​pillar 121. The spiral design allows the flash tube 4 to uniformly illuminate the ruby ​​pillar 121, improving excitation efficiency and the uniformity of laser output. Electrodes 41 are located at both ends of the flash tube 4 and extend to the outside of the resonant cavity 12, making electrical connections more convenient and reliable. A high voltage is provided through an external power supply to the flash tube 4, causing the gas inside the flash tube 4 to discharge and emit light. The ruby ​​pillar 121 (usually referring to a chromium-doped ruby ​​crystal) serves as the laser medium. When excited by light emitted from the flash tube 4, the chromium ions in the ruby ​​crystal are excited to a high energy level and release photons through stimulated emission, generating laser light. The bottom of the main body 1 is provided with symmetrically distributed bases 13. The main body 1 can be placed stably on the working surface through the bases 13 and keep a distance from the working surface to facilitate heat dissipation of the main body 1 or prevent water from the working surface from seeping into the main body 1.

[0039] Both sides of the resonant cavity 12 are provided with side covers 2. Multiple evenly spaced bidirectional bolts 24 are provided along the length of each side cover 2. Different side covers 2 are fixedly connected by these bidirectional bolts 24, forming a first cooling cavity 21 with the outer wall of the resonant cavity 12. The removable side covers 2 facilitate maintenance or replacement. Both sides of the resonant cavity 12 are connected by a connecting pipe 22 and are each provided with an external connecting pipe 23 that connects to external pipes. The first cooling cavities 21 on both sides of the resonant cavity 12 form a complete fluid circulation path through the connecting pipe 22 and the external connecting pipe 23. Cooling fluid flows into and out of the first cooling cavity 21 along the external connecting pipe 23, carrying away the heat generated during normal operation of the resonant cavity 12. Through effective temperature control, prevention of thermal damage, improvement of laser efficiency, suppression of thermal effects, and enhanced environmental adaptability, the cooling mechanism ensures the high efficiency, stability, and long lifespan of the laser. Sealant is applied to the contact surfaces of the different side covers 2 and the contact surfaces between the side covers 2 and the outer wall of the resonant cavity 12. The sealing performance of the side cover 2 assembly is improved by using sealant to prevent the leakage of cooling fluid in the first cooling chamber 21.

[0040] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A sealing structure for a laser generator, characterized in that, include: A connector (11) is provided with a detachable rubber tube (32), and the rubber tube (32) is provided with a protruding edge (322), which is in contact with the end face of the connector (11); a tapered surface (321) is provided inside the rubber tube (32); The mirror base (3) is detachably connected to the connector (11). The mirror base (3) is provided with a tapered cylinder (34) that is interference-fitted with the tapered surface (321). The protruding edge (322) is embedded in the annular groove (342) on the mirror base (3). The connector (11) has an external thread (113) on the side near the mirror base (3), and the mirror base (3) has a connecting cylinder (341) on the side near the connector (11). The inner wall of the connecting cylinder (341) has an internal thread that matches the external thread (113). The connector (11) has a plurality of evenly spaced protrusions (112) on the circumferential direction of the side with the external thread (113), and the outer wall of the rubber tube (32) has a straight groove (323) that matches the protrusions (112).

2. The sealing structure of the laser generator as described in claim 1, characterized in that, The connector (11) is provided with a limiting ring (114) on the end face of the mirror base (3), and a first sealing ring (115) is provided between the limiting ring (114) and the end face of the mirror base (3).

3. The sealing structure of the laser generator as described in claim 1, characterized in that, The outer wall of the connecting cylinder (341) is polygonal.

4. The sealing structure of the laser generator as described in claim 1, characterized in that, The end of the lens mount (3) away from the connector (11) is provided with a detachable lens (33). The lens mount (3) is provided with a groove (331) that matches the lens (33). The edge of the groove (331) is provided with a hinged pressure ring (31).

5. The sealing structure of the laser generator as described in claim 4, characterized in that, The bottom of the groove (331) is provided with a second sealing ring (332) corresponding to the edge of the lens (33); the edge of the pressure ring (31) is provided with an elastic ring (312) that contacts the lens (33).

6. The sealing structure of the laser generator as described in claim 4, characterized in that, The lens mount (3) is provided with a second cooling chamber (35) corresponding to the position of the lens (33). The side of the second cooling chamber (35) is provided with multiple symmetrically distributed through pipes (351). One end of the through pipe (351) is connected to the second cooling chamber (35), and the other end is connected to an external pipe.

7. A laser generator, characterized in that, The laser generator includes a sealing structure and a main body (1) as described in any one of claims 1 to 6. The end of the main body (1) is connected to the mirror mount (3) via the connector (11). The main body (1) includes a resonant cavity (12), a flash tube (4), and a ruby ​​pillar (121). The ruby ​​pillar (121) is disposed inside the resonant cavity (12). The two ends of the resonant cavity (12) are fixedly connected to the connector (11) via flanges (111). The connector (11) is provided with a positioning groove (116) that matches the end of the ruby ​​pillar (121). The middle section of the flash tube (4) is spiral and wraps around the circumference of the ruby ​​pillar (121). Electrodes (41) are provided at both ends of the flash tube (4). The electrodes (41) extend to the outside of the resonant cavity (12).

8. A laser generator as described in claim 7, characterized in that, The resonant cavity (12) has side covers (2) on both sides of its exterior. The side covers (2) have multiple evenly spaced bidirectional bolts (24) along their length. The different side covers (2) are fixedly connected by the bidirectional bolts (24). The side covers (2) and the outer wall of the resonant cavity (12) form a first cooling cavity (21). The resonant cavities (12) on both sides of the resonant cavity (12) are connected by a connecting pipe (22) and are provided with an external connecting pipe (23) that connects to the outside.

9. A laser generator as described in claim 8, characterized in that, Sealant is applied to the contact surfaces of the different side covers (2) and the contact surfaces between the side covers (2) and the outer wall of the resonant cavity (12).

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