Sealing structure of laser generator and laser generator

Abstract

The invention 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 lens base, the connecting piece is provided with a detachable rubber sleeve, the rubber sleeve is in interference fit with the lens base, and thus primary sealing is formed; and the rubber sleeve is provided with a convex edge which is embedded into the annular groove on the lens seat to form secondary sealing. And through multiple sealing mechanisms, the sealing effect in the laser generator is ensured, and the laser generation quality and efficiency are ensured. The laser generator comprises the sealing structure of the laser generator and a main body, the end part of the main body is provided with a connecting piece, and the connecting piece is in interference fit with a lens base through a rubber sleeve.

Description

Technical Field

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

[0002] Laser cutting equipment plays an important role in modern manufacturing. The laser generator inside the equipment can generate laser beams. The existing laser generator mainly includes a resonant cavity and a lens. The lenses are distributed at both ends of the resonant cavity. The laser is generated in the resonant cavity and reflected between the lenses at both ends, and then emitted from the lens at one end. Laser cutting equipment has been widely used in metal processing, wood processing, stone carving and other fields.

[0003] The existing laser generator has a sealing gasket between the resonant cavity and the assembly gap between the lens, which prevents dust and impurities from entering the resonant cavity. This design is too simple. As the use time increases, once the sealing gasket ages and fails, it will cause environmental pollution in the resonant cavity, thereby affecting the quality and efficiency of the laser beam, resulting in unstable laser output power and reduced cutting accuracy. Summary of the invention

[0004] The main purpose of the present invention is to provide a sealing structure of a laser generator and a laser generator, aiming to solve the problem that the sealing structure of the laser generator is simple and the sealing effect is not stable enough.

[0005] To achieve the above-mentioned purpose, the present invention proposes a sealing structure of a laser generator, comprising a connecting member and a mirror seat, wherein the mirror seat is detachably connected to the connecting member. A detachable rubber sleeve is provided on the connecting member, and a convex edge is provided on the rubber sleeve, the convex edge is fitted with the end surface of the connecting member, and a conical surface is provided inside the rubber sleeve. The mirror seat is provided with a conical sleeve that is interference-fitted with the conical surface, and the convex edge is embedded in the annular groove on the mirror seat.

[0006] Furthermore, a limiting ring is provided on the end surface of the connecting member corresponding to the mirror base, and a first sealing ring is provided between the limiting ring and the end surface of the mirror base.

[0007] Furthermore, an external thread is provided on one side of the connecting piece close to the lens holder, a connecting tube is provided on one side of the lens holder close to the connecting piece, an internal thread matching the external thread is provided on the inner wall of the connecting tube, and the outer wall of the connecting tube is polygonal.

[0008] Furthermore, a plurality of evenly spaced ridges are provided on the circumference of one side of the connecting portion provided with the external thread, and a straight groove matching the ridges is provided on the outer wall of the rubber cylinder.

[0009] Furthermore, a detachable lens is provided at one end of the lens holder away from the connecting piece, the lens holder is provided with a groove matching the lens, and a hinged pressure ring is provided at the edge of the groove.

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

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

[0012] On the other hand of the present invention, a laser generator includes the above-mentioned sealing structure of the laser emitter and a main body, and a connecting member is provided at the end of the main body. The main body includes a resonant cavity, a flash tube and a ruby column. A ruby column is provided in the resonant cavity, and both ends of the resonant cavity are fixedly connected to the connecting member through flanges, and a positioning groove for fitting the end of the ruby is provided on the connecting member. The middle section of the flash tube is helical and wound around the circumference of the ruby column, and electrodes are provided at both ends of the flash tube and extend to the outside of the resonant cavity.

[0013] Further, side covers are provided on both sides of the outside of the resonant cavity, and a plurality of bidirectional bolts evenly spaced are provided in the length direction of the side covers. Different side covers are fixedly connected through the bidirectional bolts, and the side covers and the outer wall of the resonant cavity form a first cooling cavity. The resonant cavities on both sides of the resonant cavity are communicated through a connecting pipe and are both provided with an external connection pipe communicated with an external pipeline.

[0014] Further, sealant is coated between the contact surfaces of different side covers and between the contact surfaces of the side covers and the outer wall of the resonant cavity.

[0015] Beneficial effects: During the process of assembling the lens holder to the connecting member, the conical cylinder and the rubber cylinder are in interference fit, causing the rubber cylinder to undergo radial deformation. The outer wall of the rubber cylinder is closely attached to the connecting member, the conical surface is closely attached to the conical cylinder and has a large contact area, and the sealing effect is excellent. At the same time, the convex edge is embedded in the annular groove to form a secondary seal at the bottom of the conical cylinder, further optimizing the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the assembly of the lens holder and the connecting part of the present invention; Figure 3 It is an exploded view of the lens holder and the connecting part of the present invention; Figure 4Schematic cross-sectional view of the lens base of the present invention; Figure 5 is Figure 4 Partial enlarged view at position A in; Figure 6 Schematic cross-sectional view of the connecting part of the present invention; Figure 7 Schematic cross-sectional view of the rubber cylinder of the present invention Figure 8 Schematic longitudinal cross-sectional view of the main body of the present invention; Figure 9 Schematic transverse cross-sectional view of the main body of the present invention; Explanation of the reference numerals in the attached drawings: 1. Main body; 2. Side cover; 3. Lens base; 4. Flash tube; 11. Connecting piece; 12. Resonant cavity; 13. Base; 111. Flange; 112. Convex rib; 113. External thread; 114. Limit ring; 115. First sealing ring; 116. Positioning groove; 121. Ruby column; 21. First cooling cavity; 22. Connecting pipe; 23. External connecting pipe; 24. Bidirectional bolt; 31. Pressing ring; 32. Rubber cylinder; 33. Lens; 34. Conical cylinder; 35. Second cooling cavity; 311. Snap; 312. Elastic ring; 321. Conical surface; 322. Convex edge; 323. Straight groove; 331. Groove; 332. Second sealing ring; 341. Connecting cylinder; 342. Ring groove; 351. Through pipe; 41. Electrode.

[0018] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than 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 efforts shall fall within the protection scope of the present invention.

[0020] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between the components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, the descriptions involving "first", "second", etc. in the present invention are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, "and / or" throughout the text includes three scenarios. Taking A and / or B as an example, it includes the technical solution of A, the technical solution of B, and the technical solution where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, which must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] As Figures 1 to 9 shown, a sealing structure of a laser generator proposed by the present invention includes a connecting member and a lens holder, and the lens holder 3 is detachably connected to the connecting member 11. A detachable rubber cylinder 32 is provided on the connecting member 11, and a flange 322 is provided on the rubber cylinder 32, and the flange 322 fits against the end face of the connecting member 11. A conical surface 321 is provided inside the rubber cylinder 32, and the lens holder 3 is provided with a conical cylinder 34 that is in interference fit with the conical surface 321, and the flange 322 is embedded in a ring groove 342 on the lens holder 3. The material of the rubber cylinder 32 is generally a heat-resistant and elastic rubber material, such as butyl rubber, acrylate, etc. Laser, as a high-energy beam, is likely to form high temperature locally in the device, and the rubber cylinder 32 made of heat-resistant material has a longer service life. The taper of the conical cylinder 34 is greater than the taper of the conical surface 321. When the conical cylinder 34 enters the conical surface 321, pressure is applied to the rubber cylinder 32, so that the conical cylinder 34 and the rubber cylinder 32 are in interference fit, and the rubber cylinder 32 undergoes radial deformation, and the outer wall of the rubber cylinder 32 fits tightly against the connecting member 11. The rubber cylinder 32 provides effective sealing to prevent the influence of the external environment (such as dust and moisture) on the internal optical elements, and increases the durability and performance stability of the system. The conical surface 321 and the conical cylinder 34 fit tightly and have a large contact area, and the sealing effect is excellent. The flange 322, as an integral part of the rubber cylinder 32, plays a role in limiting the position. It is convenient to determine the position of the rubber cylinder 32 in the axial direction of the connecting member 11. When the lens holder 3 is assembled to the connecting member 11, the flange 322 is embedded in the ring groove 342, and the ring groove 342 axially presses the flange 322 to form another seal at the bottom of the conical cylinder 34. Through multiple seals, the sealing effect between the connecting member 11 and the lens holder 3 is effectively optimized.

[0023] On one side of the connecting member 11 close to the lens holder 3, there is an external thread 113. On one side of the lens holder 3 close to the connecting member 11, there is a connecting cylinder 341. The inner wall of the connecting cylinder 341 is provided with an internal thread that mates with the external thread 113. The connecting member 11 and the lens holder 3 are connected by the cooperation of the external thread 113 and the internal thread. The outer wall of the connecting cylinder 341 is polygonal, which is convenient for using tools to apply a large torque to the connecting cylinder 341, improving the tightness of the assembly of the connecting member 11 and the lens holder 3, and enhancing the sealing effect of the rubber cylinder 32. On the circumference of the side of the connecting portion provided with the external thread 113, there are a plurality of evenly spaced convex ribs 112. The outer wall of the rubber cylinder 32 is provided with straight grooves 323 that mate with the convex ribs 112. With the cooperation of the convex ribs 112 and the straight grooves 323, the position of the rubber cylinder 32 in the circumferential direction of the connecting member 11 can be determined. It prevents the rubber cylinder 32 from rotating relative to the connecting member 11 during the process of screwing the lens holder 3 into the connecting member 11, reducing the wear of the rubber cylinder 32. A layer of high-temperature resistant coating (such as silicone ceramic glass coating, silicone aluminum powder coating, etc.) is plated on the contact surface between the connecting member 11 and the rubber cylinder 32. 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 the maintenance cost.

[0024] On the end face of the connecting member 11 corresponding to the lens holder 3, there is a limit ring 114. Between the limit ring 114 and the end face of the lens holder 3, there is a first sealing ring 115. When the lens holder 3 is screwed into the connecting member 11, the end face of the lens holder 3 axially presses the first sealing ring 115 sleeved on the limit ring 114, improving the sealing performance between the end face of the lens holder 3 and the connecting member 11.

[0025] The lens holder 3 is used to fix and adjust the lens 33 in the laser generator, providing precise optical alignment to ensure the quality of the laser beam and the stability of the path. A detachable lens 33 is provided at one end of the lens holder 3 away from the connecting member 11. The lens holder 3 is provided with a groove 331 that fits the lens 33, and a hinged retaining ring 31 is provided at the edge of the groove 331. One side of the retaining ring 31 is connected to the edge of the groove 331 by a hinge, and the other side opposite the hinge is detachably connected to the edge of the groove 331 by a buckle 311. At the same time, the retaining ring 31 can also be fixed in a form of being connected to the edge of the groove 331 by a plurality of buckles 311, which can not only quickly assemble the retaining ring 31 onto the lens holder 3, but also facilitate the replacement of a new retaining ring 31 to ensure the stability of the assembly of the lens 33. The freely openable and closable retaining ring 31 facilitates the 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 in contact with the lens 33 is provided at the edge of the retaining ring 31. On the one hand, the elastic ring 312 can form a buffer between the retaining ring 31 and the lens 33 to prevent possible damage to the lens 33 when the retaining ring 31 is closed; at the same time, by using the deformation of the elastic ring 312, dust or other impurities cannot enter the gap between the lens 33 and the retaining ring 31.

[0026] A second cooling cavity 35 is provided at the position of the lens holder 3 corresponding to the lens 33. A plurality of through pipes 351 symmetrically distributed are provided at the edge of the second cooling cavity 35. One end of the through pipe 351 is communicated with the second cooling cavity 35, and the other end is communicated with an external pipe. The cooling fluid enters the second cooling cavity 35 along the external pipe and continuously flows into or out of the second cooling cavity 35 through the through pipes 351. The laser passes through the lens 33, causing the temperature of the lens 33 to gradually rise. With the drastic change in the temperature of the lens 33, the assembly gap with the lens 33 changes, and the sealing performance between components will thus decrease. The second cooling cavity 35 transfers heat to the bottom wall of the groove 331, and takes out the excess heat through the fluid in the second cooling cavity 35, so as to achieve the purpose of controlling the temperature of the lens 33, thereby keeping the sealing performance of the assembly of the lens 33 and the lens holder 3 stable.

[0027] On the other hand, a laser generator proposed by the present invention includes the above-mentioned sealing structure of a laser generator and a main body 1. A connecting member 11 is provided at the end of the main body 1. The connecting member 11 is used to connect the main body 1 to the mirror base 3, ensuring a firm connection between the mirror base 3 and the main body 1, facilitating disassembly, assembly and maintenance, and improving the stability and reliability of the system. The main body 1 is the core part of the laser generator, which includes optical elements such as a resonant cavity 12, a flash tube 4 and a ruby rod 121, provides stable laser output, and protects the internal laser medium and optical elements. A ruby rod 121 is provided in the resonant cavity 12. Both ends of the resonant cavity 12 are fixedly connected to the connecting member 11 through flanges 111. A positioning groove 116 matching the end of the ruby rod 121 is provided on the connecting member 11. The middle section of the flash tube 4 is spiral and wound around the circumference of the ruby rod 121. Electrodes 41 are provided at both ends of the flash tube 4, and the electrodes 41 extend outside the resonant cavity 12 and are electrically connected to an external power supply.

[0028] The resonant cavity 12 is a key component in the laser. Photons are reflected back and forth inside it to obtain gain, thus reaching the threshold of laser oscillation. The flash tube 4 is a light source used to excite the laser medium. By providing a high voltage through the electrodes 41, the gas (usually xenon) inside the flash tube 4 discharges and emits light. The middle section of the flash tube 4 is spiral and wound around the circumference of the ruby rod 121, which can uniformly excite the ruby rod 121. The spiral design enables the flash tube 4 to uniformly irradiate the ruby rod 121, improving the excitation efficiency and the uniformity of laser output. Electrodes 41 are provided at both ends of the flash tube 4 and extend outside the resonant cavity 12, making the electrical connection more convenient and reliable. Electrodes 41 are provided at both ends of the flash tube 4. By providing a high voltage through an external power supply, the gas inside the flash tube 4 discharges and emits light. The ruby rod 121 (usually a chromium-doped ruby crystal) serves as the laser medium. When excited by the light emitted by 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. Symmetrically distributed bases 13 are provided at the bottom of the main body 1. The main body 1 can be stably placed on the working surface through the bases 13 and kept at a distance from the working surface, facilitating heat dissipation of the main body 1 or preventing the accumulated water on the working surface from seeping into the main body 1.

[0029] On both sides of the outside of the resonant cavity 12, side covers 2 are provided. Along the length direction of the side covers 2, a plurality of two-way bolts 24 with uniform intervals are provided. Different side covers 2 are fixedly connected through the two-way bolts 24, and the side covers 2 and the outer wall of the resonant cavity 12 form a first cooling cavity 21. The detachable side covers 2 facilitate maintenance or replacement. The resonant cavities 12 on both sides of the resonant cavity 12 are both connected through a communication pipe 22 and are both provided with an external connection pipe 23 communicating with an external pipeline. The first cooling cavities 21 on both sides of the resonant cavity 12 form a complete fluid circulation path through the communication pipe 22 and the external connection pipe 23. The cooling fluid flows into and out of the first cooling cavity 21 along the external connection pipe 23, taking away the heat generated during the normal operation of the resonant cavity 12. Through effective temperature control, prevention of thermal damage, improvement of laser efficiency, suppression of thermally induced effects, and enhancement of environmental adaptability, the cooling mechanism ensures the high-efficiency, stable, and long-life operation of the laser. Sealing glue is coated on the contact surfaces between different side covers 2 and between the side covers 2 and the outer wall of the resonant cavity 12. The sealing glue is used to improve the sealing performance of the assembly of the side covers 2 and prevent the cooling fluid in the first cooling cavity 21 from leaking out.

[0030] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A sealing structure of a laser generator, characterized in that, Comprising: A connecting member (11), a detachable rubber cylinder (32) is provided on the connecting member (11), a flange (322) is provided on the rubber cylinder (32), and the flange (322) is in contact with the end face of the connecting member (11); a conical surface (321) is provided inside the rubber cylinder (32); A lens holder (3), the lens holder (3) is detachably connected to the connecting member (11), the lens holder (3) is provided with a conical cylinder (34) that is in interference fit with the conical surface (321), and the flange (322) is embedded in a ring groove (342) on the lens holder (3).

2. The sealing structure of the laser generator according to claim 1, characterized in that, A limiting ring (114) is provided on the end face of the connecting member (11) corresponding to the lens holder (3), and a first sealing ring (115) is provided between the limiting ring (114) and the end face of the lens holder (3).

3. The sealing structure of the laser generator according to claim 1, characterized in that An external thread (113) is provided on one side of the connecting member (11) close to the lens holder (3), a connecting cylinder (341) is provided on one side of the lens holder (3) close to the connecting member (11), an internal thread that mates with the external thread (113) is provided on the inner wall of the connecting cylinder (341), and the outer wall of the connecting cylinder (341) is polygonal.

4. The sealing structure of the laser generator according to claim 3, characterized in that, A plurality of evenly spaced convex ribs (112) are provided on the circumference of the side of the connecting member (11) where the external thread (113) is provided, and a straight groove (323) that mates with the convex ribs (112) is provided on the outer wall of the rubber cylinder (32).

5. The sealing structure of the laser generator according to claim 1, characterized in that, A detachable lens (33) is provided at one end of the lens holder (3) away from the connecting member (11), a groove (331) that mates with the lens (33) is provided on the lens holder (3), and a pressing ring (31) is hinged to the edge of the groove (331).

6. The sealing structure of the laser generator according to claim 5, characterized in that, A second sealing ring (332) is provided at the bottom of the groove (331) corresponding to the edge of the lens (33); an elastic ring (312) that contacts the lens (33) is provided on the edge of the pressing ring (31).

7. The sealing structure of the laser generator according to claim 5, characterized in that, A second cooling cavity (35) is provided at the position of the lens holder (3) corresponding to the lens (33), and a plurality of symmetrically distributed through pipes (351) are provided at the edge of the second cooling cavity (35); one end of the through pipe (351) is communicated with the second cooling cavity (35), and the other end is communicated with an external pipeline.

8. A laser generator, characterized in that, Comprising the sealing structure of the laser generator according to any one of claims 1 to 7 and a main body (1), the end of the main body (1) is connected to the lens holder (3) through the connecting member (11); the main body (1) includes a resonant cavity (12), a flash tube (4) and a ruby column (121); the ruby column (121) is provided inside the resonant cavity (12), both ends of the resonant cavity (12) are fixedly connected to the connecting member (11) through flanges (111), and a positioning groove (116) that mates with the end of the ruby column (121) is provided on the connecting member (11); the middle section of the flash tube (4) is spiral and wound around the circumference of the ruby column (121), electrodes (41) are provided at both ends of the flash tube (4), and the electrodes (41) extend to the outside of the resonant cavity (12).

9. A laser generator according to claim 8, characterized in that, On both sides of the outside of the resonant cavity (12), side covers (2) are provided. A plurality of two-way bolts (24) with uniform intervals are arranged in the length direction of the side covers (2). Different side covers (2) are fixedly connected through the two-way bolts (24). A first cooling cavity (21) is formed between the side covers (2) and the outer wall of the resonant cavity (12). The resonant cavities (12) on both sides of the resonant cavity (12) are both communicated through a communication pipe (22) and are both provided with an external connection pipe (23) communicated with an external pipeline.

10. A laser generator as claimed in claim 9, wherein, Sealant is coated between the contact surfaces of different side covers (2) and between the contact surfaces of the side covers (2) and the outer wall of the resonant cavity (12).

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