Laser head with cooling and dedusting functions

Abstract

The utility model provides a laser head with cooling and dedusting functions, which comprises an optical fiber seat, an adjusting seat and an adjusting ring which are sequentially matched and connected, a lens cone is sleeved inside one end of the adjusting seat far away from the optical fiber seat, a cooling air duct is arranged on the adjusting seat along the circumferential direction, and an air cooling joint communicated with the cooling air duct is arranged on the adjusting seat. A plurality of airflow jet orifices are formed in the adjusting ring in the circumferential direction in an array mode and communicate with the cooling air channel. According to the laser head, the cooling air channel is formed in the adjusting base in the circumferential direction, the cooling air channel surrounds the outer side of the lens cone, heat on the adjusting base and the lens cone is taken away through gas in the cooling air channel, external cooling equipment is not needed, and the size of the laser head is greatly reduced; and the cooling air duct is communicated with a plurality of airflow jet orifices arranged on the adjusting ring along the circumferential array, so that airflow is jetted out around the front end part of the lens barrel through the airflow jet orifices to form an annular flow field, a dust removal effect is achieved, and dust is prevented from polluting the lens.

Description

Technical Field

[0001] The utility model relates to the technical field of laser design, in particular to a laser head with cooling and dust removal functions. Background Art

[0002] Laser technology plays a vital role in many fields, including but not limited to material processing, measurement technology, optical communications, and biomedicine. In these applications, the performance of the laser head is directly related to the stability and efficiency of the overall system. With the advancement of technology, the demand for laser heads is also increasing, especially in terms of cooling and dust removal. The performance requirements are more stringent. Existing lasers are usually cooled and dusted by external equipment.

[0003] Traditional laser head cooling and dust removal systems usually use large external cooling devices and dust removal devices, which makes the overall size of the laser larger and the weight increased, which is not conducive to the lightweight and miniaturization of the laser. In addition, traditional cooling and dust removal methods are often inefficient and cannot meet the heat dissipation and cleaning requirements of high-power laser heads. It is easy to cause the laser head to degrade due to overheating and affect the laser's focusing ability and energy density due to low dust removal efficiency, thereby affecting the processing accuracy of the laser head. Utility Model Content

[0004] The utility model aims to provide a laser head with cooling and dust removal functions, which can simultaneously realize cooling and dust removal of the laser head during use.

[0005] The utility model provides a laser head with cooling and dust removal functions, comprising an optical fiber seat, an adjustment seat and an adjustment ring which are matched and connected in sequence, the optical fiber seat and the adjustment seat are rotationally matched and connected, the adjustment seat and the adjustment ring are fixedly connected, a lens barrel is sleeved inside the end of the adjustment seat away from the optical fiber seat, a cooling air duct is opened on the adjustment seat along the circumferential direction, an air cooling joint connected to the cooling air duct is installed on the adjustment seat, a plurality of air flow injection ports are arranged in a circumferential array on the adjustment ring, and the air flow injection ports are connected to the cooling air duct.

[0006] Furthermore, the aperture of the airflow injection port gradually decreases from the inside to the outside.

[0007] Furthermore, an annular groove is circumferentially formed at one end of the optical fiber seat inserted into the adjustment seat, and at least one adjustment screw hole corresponding to the position of the annular groove is formed on the adjustment seat, and a limit screw is installed in the adjustment screw hole.

[0008] Furthermore, the end of the limit screw is a hemispherical structure, and a rubber layer is adhered to the outer side of the hemispherical structure.

[0009] Furthermore, at least one first set screw hole is provided on the optical fiber holder, and a first set screw is installed in the first set screw hole.

[0010] Furthermore, the outer side of the lens barrel and the adjustment ring are both provided with threads that cooperate with each other.

[0011] Furthermore, the adjustment ring is fixed on the adjustment seat by fixing screws.

[0012] Furthermore, the inner diameter of the adjustment seat is the same as the outer diameter of the lens barrel.

[0013] Furthermore, an annular groove is formed on the outer side of the lens barrel, and a sealing strip is installed in the annular groove.

[0014] Furthermore, a plurality of positioning holes are formed on the lens barrel at equal intervals along the circumferential direction, a waist-shaped hole is formed on the adjustment seat, and a set screw cooperating with the positioning hole is installed in the waist-shaped hole.

[0015] The technical solution of the utility model has the following beneficial effects compared with the prior art: the laser head opens a cooling air duct along the circumferential direction inside the adjustment seat, so that the cooling air duct surrounds the outer side of the lens barrel, and the heat on the adjustment seat and the lens barrel is taken away by the gas inside the cooling air duct, without the need for external cooling equipment, which greatly reduces the volume of the laser head, and the cooling air duct is connected with a plurality of air flow injection ports arranged in a circumferential array on the adjustment ring, so that the air flow is ejected through the air flow injection ports around the front end of the lens barrel to form an annular flow field, which has a dust removal effect, improves the dust removal efficiency, and prevents dust from contaminating the lens and affecting the focusing ability of the laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 3 It is an exploded view of the overall structure of the utility model;

[0020] Figure 4 This is a flow field distribution diagram when the airflow is ejected when the laser head of the utility model is in use;

[0021] Explanation of the reference numerals: 1-fiber seat, 2-first fixing screw hole, 3-adjusting seat, 4-adjusting screw hole, 5-positioning hole, 6-waist-shaped hole, 7-groove, 8-cooling air duct, 9-adjusting ring, 10-lens barrel, 11-annular groove, 12-lens, 13-air cooling joint, 14-screw, 15-air flow injection port, 16-light outlet. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example 1

[0026] like Figure 1-Figure 4As shown, the utility model provides a laser head with cooling and dust removal functions, comprising a fiber optic seat 1, an adjustment seat 3 and an adjustment ring 9 which are sequentially matched and connected. The fiber optic seat 1 and the adjustment seat 3 are rotatably matched and connected. Because the emitted light spot is a square and there is a requirement for alignment, the fiber optic seat 1 needs to have the function of adjusting the angle by rotation. The specific matching method is: an annular groove 11 is circumferentially provided at one end of the fiber optic seat 1 inserted into the adjustment seat 3, and at least one adjustment screw hole 4 corresponding to the position of the annular groove 11 is provided on the adjustment seat 3. A limit screw is installed in the adjustment screw hole 4, and the end of the limit screw is a hemispherical structure for abutting against the annular groove 11, so that the optical fiber can only rotate along the axis and cannot fall off, thereby ensuring the light output safety of the laser head, and a rubber layer is adhered to the outer side of the hemispherical structure, so that the fiber optic seat 1 has a certain damping when it rotates, and the rotation position of the fiber optic seat 1 can be controlled by turning the limit screw.

[0027] At least one first fixing screw hole 2 is provided on the optical fiber holder 1, and a first fixing screw for fixing the optical fiber is installed in the first fixing screw hole 2.

[0028] The adjusting seat 3 and the adjusting ring 9 are fixedly connected by screws 14. The inner sleeve of the end of the adjusting seat 3 away from the optical fiber seat 1 is connected with a lens barrel 10. The outer side of the lens barrel 10 and the adjusting ring 9 are provided with non-standard threads that cooperate with each other. When the lens barrel 10 is rotated, since the adjusting ring 9 is fixed on the adjusting seat 3, under the cooperation of the threads, the lens barrel 10 can move back and forth along its axis, thereby achieving the purpose of fine-tuning the focal length; a plurality of positioning holes 5 are provided at equal intervals along the circumferential direction on the lens barrel 10, and a waist-shaped hole 6 is provided on the adjusting seat 3. A set screw that cooperates with the positioning hole 5 is installed in the waist-shaped hole 6. When the lens barrel 10 is fine-tuned to a suitable position, the set screw is turned to cooperate with one of the positioning holes 5 on the lens barrel 10 to achieve the fixation of the lens barrel 10, so as to avoid the vibration in the use environment causing the focal length to shift. The waist-shaped hole 6 is provided to facilitate the adjustment of the position of the set screw and achieve the fixation of the lens barrel 10 after the focal length is fine-tuned.

[0029] An annular groove 7 is formed on the outer side of the lens barrel 10 , and a sealing strip is installed in the annular groove 7 , so that the lens barrel 10 has a certain damping force during the forward and backward movement, thereby preventing the lens barrel 10 from slipping during adjustment.

[0030] A cooling air duct 8 is provided on the adjusting seat 3 along the circumference, and an air cooling joint 13 connected to the cooling air duct 8 is installed on the adjusting seat 3. A plurality of air flow injection ports 15 are arranged in an array along the circumference on the adjusting ring 9, and the air flow injection ports 15 are connected to the cooling air duct 8. After the gas has an external positive pressure system and a filtering system, it is connected to the air cooling joint 13. After the gas passes through the cooling air duct 8, it is ejected from the air flow injection ports 15 on the adjusting ring 9. The aperture of the air flow injection ports 15 gradually decreases from the inside to the outside, which can play a role in pressurizing and rectifying the passing gas. When the gas passes through the air flow injection ports 15, an annular flow field will be formed around the light outlet 16 of the lens barrel 10, which plays a role in dust removal and prevents dust from contaminating the lens 12.

[0031] Since the temperature of the pure air output by the external positive pressure system is much lower than the critical operating temperature of the laser, when the gas passes through the cooling air duct 8, it will take away the temperature on the adjustment seat 3. The inner diameter of the adjustment seat 3 is the same as the outer diameter of the lens barrel 10, and the thermal resistance is very small, that is, the heat generated by the laser head when emitting light will be taken away by the gas, thereby achieving a forced cooling effect.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A laser head with cooling and dust removal functions, characterized in that: It comprises an optical fiber seat, an adjustment seat and an adjustment ring which are matched and connected in sequence, the optical fiber seat and the adjustment seat are rotationally matched, the adjustment seat and the adjustment ring are fixedly connected, a lens barrel is sleeved on the inner part of one end of the adjustment seat away from the optical fiber seat, a cooling air duct is opened on the adjustment seat along the circumferential direction, an air cooling joint connected to the cooling air duct is installed on the adjustment seat, and a plurality of air flow injection ports are arranged in a circumferential array on the adjustment ring, and the air flow injection ports are connected to the cooling air duct.

2. The laser head with cooling and dust removal functions according to claim 1, characterized in that: The aperture of the airflow injection port gradually decreases from the inside to the outside.

3. The laser head with cooling and dust removal functions according to claim 1, characterized in that: An annular groove is formed in the circumferential direction at one end of the optical fiber holder inserted into the adjustment holder. The adjustment holder is provided with at least one adjustment screw hole corresponding to the position of the annular groove. A limit screw is installed in the adjustment screw hole.

4. The laser head with cooling and dust removal functions according to claim 3, characterized in that: The end of the limit screw is a hemispherical structure, and a rubber layer is adhered to the outer side of the hemispherical structure.

5. The laser head with cooling and dust removal functions according to claim 1, characterized in that: At least one first set screw hole is provided on the optical fiber seat, and a first set screw is installed in the first set screw hole.

6. The laser head with cooling and dust removal functions according to claim 1, characterized in that: The outer side of the lens barrel and the adjusting ring are both provided with threads which match each other.

7. The laser head with cooling and dust removal functions according to claim 1, characterized in that: The adjusting ring is fixed on the adjusting seat by fixing screws.

8. The laser head with cooling and dust removal functions according to claim 1, characterized in that: The inner diameter of the adjustment seat is the same as the outer diameter of the lens barrel.

9. The laser head with cooling and dust removal functions according to claim 8, characterized in that: An annular groove is formed on the outer side of the lens barrel, and a sealing strip is installed in the annular groove.

10. The laser head with cooling and dust removal functions according to claim 1, characterized in that: The lens barrel is provided with a plurality of positioning holes at equal intervals along the circumferential direction, the adjustment seat is provided with a waist-shaped hole, and a set screw matched with the positioning hole is installed in the waist-shaped hole.

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