CN218216086U - Laser absorption device and laser - Google Patents

Abstract

The application provides a laser absorption device and a laser. The laser provided by the application comprises a laser absorption device and a laser main body mechanism, wherein the laser absorption device and the laser main body mechanism are integrally connected to form the laser. The laser absorption device includes: inferior laser absorption piece, main laser absorption piece, heat-conduction structure and first lens, there is a cavity in the middle of the inferior laser absorption piece, and the front side of cavity is the inside unnecessary stray laser of laser instrument and gets into laser absorption device's entrance port, main laser absorption piece is located the rear side of the cavity of inferior laser absorption piece absorbs the stray laser that gets into laser absorption device from the entrance port. The first lens is positioned on the front side of the main laser absorption block and can expand incident laser. The heat conduction structure, the secondary laser absorption block and the main laser absorption block are in an adjacent relation, and heat absorbed by the secondary laser absorption block and the main laser absorption block is taken away through the heat conduction structure.

Description

Laser absorption device and laser

Technical Field

The application relates to the technical field of laser, in particular to a laser absorption device and a laser.

Background

In the field of new energy, due to the good conductivity of the copper material, a large amount of copper material is required to be used in a new energy automobile power battery, and the near infrared absorption rate of copper is less than 5%, so that the efficiency of processing the copper material by using infrared light is extremely low, 95% of laser can be reflected and damage can be caused to a laser; the absorption rate of copper to green light wavelength is up to more than 40%, so the current copper batteries are all welded by adopting a high-power green laser.

The high-power green laser generates a large amount of redundant laser light which is not output finally in the working process, and a laser absorption device is needed to collect and absorb the light which is not needed in the working process of the laser.

Because the high-power green laser has high laser energy and great harm to operators, particularly eyes, the laser absorption device plays an extremely important role in the production of the high-power green laser.

For the redundant laser generated inside the laser, it is a common practice to arrange a laser absorption device on a light path generated by the redundant laser, and convert the redundant laser into heat through water cooling or other thermal contact methods to be absorbed by a heat dissipation system of the laser itself.

The existing laser absorption device generally has a problem that the existing laser absorption device is generally large in size, cannot be well installed in a high-power green laser, or generally can enlarge the size of the laser if a good light absorption effect is realized.

SUMMERY OF THE UTILITY MODEL

The application provides a laser absorption device and a laser. The laser that this application provided can be the green laser instrument of high power, including laser absorbing device and laser main part mechanism, this laser absorbing device and laser main part mechanism integral type are connected and are formed the laser instrument, fall through the whole absorptions of the heat of the stray light conversion that the water-cooling heat dissipation mode produced laser work to guarantee the normal operating of laser instrument.

The application provides a laser absorption device includes: inferior laser absorbs piece, main laser absorption piece, heat-conduction structure and first lens, there is a cavity in the middle of inferior laser absorption piece, and the front side of cavity is the entrance of the inside unnecessary stray laser entering laser absorbing device of laser instrument, main laser absorption piece is located the rear side of the cavity of inferior laser absorption piece absorbs the stray laser that gets into laser absorbing device from the entrance, heat-conduction structure and inferior laser absorption piece, main laser absorption piece are the adjacent relation, and the heat that inferior laser absorption piece and main laser absorption piece absorbed is taken away the heat through the heat-conduction circulation effect of heat-conduction structure.

This application is different from prior art in that, the front side of main laser absorption piece is equipped with first lens, and the graphic representation arrow direction is the inside unnecessary stray laser incidence direction of laser instrument, and whole laser absorption device center alignment incident laser center, first lens can expand the laser of inciding. Because the size of a laser irradiation spot is small, if the laser is not expanded, most of the laser is intensively irradiated near the center of the main laser absorption block, which may damage the main laser absorption block due to excessive energy, and may also result in more reflected stray laser and limited absorption rate. After the first lens expands the laser of incidenting, be favorable to prolonging the life of main laser absorption piece, also make more laser pass through the reflex action, be reflected to inferior laser absorption piece, by inferior laser absorption piece absorbs, can increase stray laser and get into proportion on the inferior laser absorption piece, perhaps, under the prerequisite that the volume does not increase, can increase laser and be in make a round trip the reflection number of times on inferior laser absorption piece is favorable to laser to be absorbed. Under equal laser absorption condition, compare traditional laser absorbing device, the laser absorbing device of this application can be with littleer of its size setting, reduce the cost, increase the adaptability of product.

The laser absorption device can be placed on the outer wall of the laser, and the size of the laser cannot be greatly increased. Simultaneously, most of laser absorbing device can not absorb unnecessary light completely, will lead to the inside air temperature of laser complete machine to rise, and the long-time during operation can influence the stability of laser, influences the life-span of laser even, and the laser absorbing device of this application absorbs the heat that the production was absorbed to laser through with the whole quick-witted integral type water-cooling heat dissipation mode of laser and basically absorbs totally to guarantee the normal operating of laser.

Drawings

In order to clearly illustrate the embodiments or technical solutions of the present application, the drawings used in the embodiments or technical solutions of the present application will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a laser according to the present application;

FIG. 2 is a schematic diagram of a first cross-sectional structure of a laser absorption device according to the present application;

FIG. 3 is a second cross-sectional view of the laser absorption device of the present application;

FIG. 4 is a schematic diagram of a third cross-sectional structure of the laser absorption device of the present application;

FIG. 5 is a schematic diagram of a fourth cross-sectional structure of the laser absorption device of the present application;

FIG. 6 is a fifth cross-sectional view of a laser absorption device according to the present application;

FIG. 7 is a schematic view of a sixth cross-sectional structure of the laser absorption device of the present application;

FIG. 8 is a schematic structural view of a main laser absorber block of the present application;

FIG. 9 is a first structural schematic of a secondary laser absorption block of the present application;

fig. 10 is a second structural view of the sub laser absorption block of the present application.

Reference numerals: 01. the laser absorption device comprises a fixed base plate, 02, a sleeve, 03, a secondary laser absorption block, 04, a main laser absorption block, 05, an end cover, 06, a quick-connection plug, 07, a first sealing ring, 08, a second sealing ring, 09, a third sealing ring, 10, a fourth sealing ring, 11, a fifth sealing ring, 30, a heat conduction structure, 40, a first lens, 50, a second lens, 301, a water through hole, 302, a water tank, 303, an outer wall surface, 304, a first sealing groove, 305, a second sealing groove, 306, a thread surface, 401, a water inlet reservoir, 402, a water outlet reservoir, 403, a water inlet through hole, 404, a water outlet through hole, 405, a screw hole, 406, a sealing groove, 407, a threaded hole, 408, a conical surface, 100, a laser absorption device, 200 and a laser main body mechanism.

Detailed Description

In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The present application provides a laser, as shown in fig. 1, fig. 1 is a schematic structural diagram of the laser of the present application, the laser may be a high-power green laser, and includes a laser absorption device 100 and a laser main body mechanism 200, the laser absorption device 100 is mounted on an outer wall of the laser main body mechanism 200, and the laser absorption device 100 and the laser main body mechanism 200 are integrally connected to form various types of lasers such as a high-power green laser. In other embodiments, the laser absorption device 100 may also be installed inside the laser main body mechanism 200, and is not limited to an outer wall, that is, the laser absorption device 100 is installed on the laser main body mechanism 200, both inside and outside, as long as it is ensured that the laser absorption device 100 can be conveniently connected with a cooling device for heat dissipation.

As shown in fig. 2, fig. 2 is a schematic diagram of a first cross-sectional structure of a laser absorption device of the present application, the laser absorption device including: inferior laser absorbs piece 03, main laser and absorbs piece 04, heat-conducting structure 30 and first lens 40, there is a cavity in the middle of the piece 03 is absorbed to inferior laser, and the front side of cavity is the entrance port that the inside unnecessary stray laser of laser instrument got into laser absorbing device, main laser absorbs piece 04 and locates the rear side of the cavity of inferior laser absorption piece 03 absorbs the stray laser that gets into laser absorbing device from the entrance port, heat-conducting structure 30 and inferior laser absorb piece 03, main laser and absorb piece 04 and be the adjacent relation, and the heat that inferior laser absorbed piece 03 and main laser and absorb piece 04 is through heat-conducting circulation effect with heat-conducting structure 30, heat-conducting structure 30 can preferentially adopt water circulation heat conduction system to take away and carry out heat-conduction.

The difference between the laser absorption block and the prior art is that the front side of the main laser absorption block 04 is provided with a first lens 40, the direction of the arrow in the drawing is the incidence direction of the unnecessary stray laser inside the laser, the center of the whole laser absorption device is aligned with the center of the incident laser, and the first lens 40 can expand the incident laser.

Generally, since the irradiation spot size of the laser is small, if the laser beam is not expanded, most of the laser beam is intensively irradiated near the center of the main laser absorption block 04, which may damage the main laser absorption block 04 due to excessive energy, and may also cause more stray laser beams to be reflected back to the entrance port, and the absorption rate is limited. After the first lens 40 expands the incident laser, the service life of the main laser absorption block 04 is prolonged, more laser is reflected to the secondary laser absorption block 03 through reflection, and is absorbed by the secondary laser absorption block 03, so that the proportion of stray laser entering the secondary laser absorption block 03 can be increased, or the number of back-and-forth reflection times of the laser on the secondary laser absorption block 03 can be increased on the premise that the size is not increased, and the laser is absorbed.

As shown in fig. 3, fig. 3 is a schematic diagram of a second cross-sectional structure of the laser absorption apparatus of the present application, a tapered surface 408 is disposed on a front side of a main laser absorption block 04 of the laser absorption apparatus, incident laser light is incident on the tapered surface 408 of the main laser absorption block 04, a part of the incident laser light is absorbed by the main laser absorption block 04 and converted into heat, another part of the laser light is reflected by the tapered surface of the main laser absorption block 04, and the reflected part of the laser light is finally absorbed by substantially all of the laser light and converted into heat after repeated reflection by a sub laser absorption block 03 and the main laser absorption block 04. Similarly, the design of the tapered surface 408 can increase the number of times of back-and-forth reflection of the laser on the secondary laser absorption block 03 and the primary laser absorption block 04 without increasing the volume, which is beneficial to the absorption of the laser.

As shown in fig. 4, fig. 4 is a schematic diagram of a third cross-sectional structure of the laser absorption device of the present application, in which a helical surface 306 is disposed inside the secondary laser absorption block 03, a base of the helical surface 306 is disposed on the secondary laser absorption block 03, an end of the helical surface 306 is inclined to one side of an entrance port of laser light, the inclination angle is α, and the helical surface 306 is beneficial to reflecting the laser light from the secondary laser absorption block 03 back to the primary laser absorption block 04, increasing the number of back-and-forth reflections of the laser light, and being beneficial to absorbing the laser light.

In the preferred embodiment, the inclination angle α satisfies the condition of 30 ° ≦ α ≦ 60 °, which relatively allows the helical tooth surface 306 to have better reflection effect and better absorption effect of the secondary laser absorption block 03 to the laser.

As shown in fig. 5, fig. 5 is a fourth sectional structure schematic diagram of the laser absorption device of the present application, the helical tooth surface 306 increases from inside to outside in size gradually, and it is also favorable to reflect the laser from the secondary laser absorption block 03 back to the main laser absorption block 04, and because the laser is concentrated near the entrance, the laser of incidence is expanded by the first lens 40, and through reasonable design, the size increase of the helical tooth surface 306 can be basically avoided to influence the incidence of the laser, that is, the blocking effect of the helical tooth surface 306 on the laser incidence can be avoided based on the ingenious design of the present application.

As shown in fig. 6, fig. 6 is a schematic diagram of a fifth cross-sectional structure of the laser absorption apparatus of the present application, the laser absorption apparatus is provided with a first lens 40, the main laser absorption block 04 also has a tapered surface 408, the laser absorption apparatus further includes a second lens 50, the second lens 50 is located between the first lens 40 and the main laser absorption block 04, and can shrink or collimate the expanded laser beam toward the center, so as to ensure that the laser beam enters the main laser absorption block 04 as directly as possible when entering, and prevent the laser beam from entering the sub laser absorption block 03 when entering as possible, so that the direction of the light beam that passes through the sub laser absorption block 03 and then enters the main laser absorption block 04 is an undesired direction, and the number of reflections is reduced.

As shown in fig. 7, fig. 7 is a schematic diagram of a sixth cross-sectional structure of the laser absorption device of the present application, and the laser absorption device further includes: fixed base plate 01, sleeve 02, end cap 05. Fixed substrate 01 set firmly in inferior laser absorbs the front side of piece 03 and heat-conduction structure 30, sleeve 02 set firmly in inferior laser absorbs the outside of piece 03 and heat-conduction structure 30, end cover 05 set firmly in the rear side of main laser absorption piece 04, fixed substrate 01, sleeve 02, end cover 05 be provided with and do benefit to laser absorption device overall structure's stability.

In an alternative embodiment, as shown in fig. 7, the laser absorption device further includes a plurality of sealing rings, as shown in fig. 7, the laser absorption device further includes a first sealing ring 07, a second sealing ring 08, a third sealing ring 09, a fourth sealing ring 10, and a fifth sealing ring 11, and the sealing rings can improve the air tightness of the laser absorption device at the joints between the components, prevent the conductive medium of the heat conduction structure 30 from overflowing, and ensure the heat conduction stability of the heat conduction structure 30.

The whole water path circulation structure will be explained in detail as follows:

fig. 8 is a schematic structural diagram of a main laser absorption block 04 of the present application, as shown in fig. 7 and fig. 8, the laser absorption apparatus further includes a quick connector 06, taking a water circulation heat conduction system as an example, the main laser absorption block 04 includes a water inlet reservoir 401 and a water outlet reservoir 402, a water inlet through hole 403 and a water outlet through hole 404 are disposed at corresponding positions, the main laser absorption block 04 is connected to the secondary laser absorption block 03 through a screw hole 405, a flat end surface of the main laser absorption block 04 is provided with a sealing groove 406, a fifth sealing ring 11 is disposed in the groove to ensure sealing, an outer ring is provided with a plurality of threaded holes 407 for locking the main laser absorption block 04 and the end cover 05 together, two connectors are disposed at positions corresponding to the water inlet through hole 403 and the water outlet through hole 404 on the end cover 05, 2 quick connectors 06 can be directly mounted, the quick connector 06 can be directly connected to a water pipe of a water cooler, compared with other water inlet modes, a larger amount of cooling water can flow in the present application, and is beneficial to more rapid heat dissipation of the whole laser absorption apparatus.

Fig. 9 is a first structural view of the sub laser absorption block 03 of the present application, and fig. 10 is a second structural view of the sub laser absorption block 03 of the present application, in which 2 water holes 301 are provided on one end surface of the sub laser absorption block 03, one end is a water inlet, and the other end is a water outlet, and water passes through the water holes, and a water tank 302 is provided on an outer wall surface 303. Wherein the arrow mark is the flow direction of rivers in basin 302, and rivers are followed the inlet opening and are gone into, flow through basin 302, finally flow from the apopore, realize the liquid cooling circulation, whole inferior laser absorption piece 03 of whole basin equipartition, can be even absorb the heat of inferior laser absorption piece 03 totally. In order to realize that water flows according to the arrangement direction of the water tank, the outer wall surface 303 needs to be matched with the inner wall of the sleeve 02, the water is locked in the water tank 302, meanwhile, the fourth sealing ring 10 is placed in the first sealing groove 304, the third sealing ring 09 is placed in the second sealing groove 305, and the first sealing ring 07 is placed in the sealing groove 307, so that the water cannot leak.

A plurality of screw holes 308 are formed in one end face of the secondary laser absorption block 03, and a plurality of screw holes 405 of the main laser absorption block 04 are fixedly connected through screws, and a plurality of screw holes 309 formed in the other end face of the secondary laser absorption block 03 and a plurality of screw holes formed in the fixed substrate 01 are fixedly connected through screws. The whole laser absorption device 100 is fixed on the end face of the laser main body structure 200 through a plurality of mounting holes in the fixed substrate 01, all redundant light of all lasers is absorbed, two quick-connection connectors 06 of the laser absorption device are connected with the water cooler in an inlet mode and an outlet mode, and therefore heat dissipation of the whole device is achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Positional relationships such as up, down, left, right, front, back, inner, outer, and the like are used for the convenience of the reader to better understand the directional relationships of the product structure and do not necessarily require that the product structure actually must be in that direction. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include the inherent elements. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or device comprising the element. In addition, parts of the technical solutions provided in the embodiments of the present application that are consistent with implementation principles of corresponding technical solutions in the prior art are not described in detail, so as to avoid redundant description.

The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for a person skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and various embodiments in the present application can be combined, and these improvements, modifications and combinations also fall within the scope of protection of the claims of the present application, that is, the claims of the present application can make any combination of the embodiments of the present application, and are not limited to the limited combinations of the embodiments passed through by the present application.

Claims (10)

1. A laser light absorption device, comprising: inferior laser absorbs piece (03), main laser and absorbs piece (04), heat-conduction structure (30) and first lens (40), there is a cavity in the middle of inferior laser absorbs piece (03), and the front side of cavity is the inside unnecessary stray laser of laser instrument and gets into laser absorbing device's entrance port, main laser absorbs piece (04) and locates the rear side of the cavity of inferior laser absorption piece (03), heat-conduction structure (30) and inferior laser absorption piece (03), main laser absorption piece (04) are the adjacent relation, the front side of main laser absorption piece (04) is equipped with first lens (40), first lens (40) are expanded the laser of incidenting.

2. A laser light absorption device as claimed in claim 1, characterized in that the front side of the main laser absorption block (04) of the laser light absorption device is provided with a conical surface (408).

3. The laser light absorption device as claimed in claim 2, further comprising a second lens (50), wherein the second lens (50) is located between the first lens (40) and the main laser light absorption block (04) and converges or collimates the laser light expanded by the first lens (40) toward the center.

4. The laser absorption device as claimed in claim 1, wherein the inside of the sub laser absorption block (03) of the laser absorption device is provided with a helical tooth surface (306), the base of the helical tooth surface (306) is provided on the sub laser absorption block (03), and the end of the helical tooth surface (306) is inclined to the side of the entrance port of the laser light by an inclination angle α.

5. The laser light absorbing apparatus according to claim 4, wherein the inclination angle α satisfies a condition of 30 ° ≦ α ≦ 60 °.

6. A laser light absorbing device as claimed in claim 4, characterized in that the helical flanks (306) gradually increase in size from the inside towards the outside.

7. The laser light absorbing device as recited in claim 1, wherein the laser light absorbing device further comprises: fixed base plate (01), sleeve (02), end cover (05), fixed base plate (01) set firmly in the front side of inferior laser absorption piece (03) and heat-conduction structure (30), sleeve (02) set firmly in the outside of inferior laser absorption piece (03) and heat-conduction structure (30), end cover (05) set firmly in the rear side of main laser absorption piece (04).

8. The laser light absorption device as recited in claim 7, further comprising a plurality of sealing rings for promoting hermeticity of the laser light absorption device at the connection between the components.

9. The laser absorption device as claimed in claim 7, further comprising a quick connector (06), a water inlet reservoir (401) and a water outlet reservoir (402), wherein a water inlet through hole (403) and a water outlet through hole (404) are formed in corresponding positions, the main laser absorption block (04) is connected with the secondary laser absorption block (03) through a screw mounting hole (405), a flat end face of the main laser absorption block (04) is provided with a sealing groove (406), the outer ring of the main laser absorption block (04) is provided with a plurality of threaded holes (407) for locking the main laser absorption block (04) and the end cover (05) together, two connectors are arranged on the end cover (05) corresponding to the water inlet through hole (403) and the water outlet through hole (404), 2 quick connectors (06) are mounted on the two connectors, and the quick connectors (06) are directly connected with a water pipe of the water cooler.

10. A laser, characterized by comprising the laser absorption device (100) as claimed in any one of claims 1 to 9, and a laser main body mechanism (200), wherein the laser absorption device (100) is mounted on the laser main body mechanism (200), and the laser absorption device (100) and the laser main body mechanism (200) are integrally connected.

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