CN218917436U - Heat radiation structure and copying machine device - Google Patents

Abstract

The application provides a heat radiation structure and a copying device, wherein the heat radiation structure is used for radiating heat for a collimation assembly, the heat radiation structure comprises a body, a mounting hole is formed in the body, and the mounting hole is used for mounting the collimation assembly; the cooling channel is arranged in the body, the body is provided with an inlet and an outlet, and the inlet and the outlet are respectively communicated with the cooling channel. The utility model provides a current problem that leads to the test result inaccurate because of the collimation subassembly generates heat has been overcome to this application, and the body is integrated the fixed and radiating function of collimation subassembly, simple structure, and the radiating effect is good, makes things convenient for the collimation subassembly installation and dismantles.

Description

Heat radiation structure and copying machine device

Technical Field

The application belongs to the technical field of laser, and particularly relates to a heat radiation structure and a copying device.

Background

In the production process of the semiconductor laser, the semiconductor laser needs to be subjected to aging test, the semiconductor laser is continuously operated for a long time, and the hardware performance and the system stability of the semiconductor laser are tested, so that the problem of the semiconductor laser is exposed early, and the performance stability of the laser is improved by adjusting the process or parameters of the laser.

The existing medium and small power semiconductor laser is in butt joint with a copying device through a collimation component, the collimation component heats seriously in the testing process, the accuracy of a testing result is affected, and various performance parameters of the laser cannot be tested even when the collimation component is seriously heated.

Disclosure of Invention

The embodiment of the application provides a heat radiation structure and a copying device to solve current inaccurate problem of test result because of collimating assembly generates heat.

In a first aspect, embodiments of the present application provide a heat dissipation structure for dissipating heat from a collimating assembly, including:

the body is provided with a mounting hole which is used for mounting the collimation assembly; the cooling device is characterized in that a cooling channel is arranged in the body, an inlet and an outlet are formed in the body, and the inlet and the outlet are respectively communicated with the cooling channel.

Optionally, the mounting hole has an opening, the body is located open-ended tip is equipped with first connecting portion, two first connecting portion set up relatively, two first connecting portion pass through the connecting piece and connect, in order to adjust the aperture of mounting hole.

Optionally, the cooling channel has a first sub-channel, a second sub-channel and a third sub-channel, along the direction from the inlet to the outlet, the first sub-channel, the second sub-channel and the third sub-channel are sequentially connected, and the first sub-channel and the third sub-channel are oppositely arranged and are respectively located at two sides of the cooling channel.

Optionally, the body includes:

the first sub-part encloses the mounting hole;

the second sub-part is internally provided with the cooling channel;

and the first sub-part and the second sub-part are connected through the heat radiation grille.

Optionally, the body further includes a mounting plate, the second sub-portion is disposed on the mounting plate, and a through hole is disposed on the mounting plate.

Optionally, the first sub-portion has a first side and a second side, the second sub-portion has a third side and a fourth side, along the axial direction of the mounting hole, the first side is arranged opposite to the second side, the third side is arranged opposite to the fourth side, the first side and the third side are located in the same plane, and the second side extends out of the fourth side in a direction deviating from the first side.

In a second aspect, an embodiment of the present application further provides a copying apparatus, including:

a base;

the heat radiation structure of any one of the above, which is used for radiating heat for the collimation component of the laser to be tested;

and the heat dissipation structure and the copying mechanism are both installed on the base, the body is attached to the copying mechanism, the copying mechanism is provided with a light-passing hole, and the installation hole is opposite to the light-passing hole.

Optionally, the heat dissipation device further comprises a fan, the fan is installed on the base, and the heat dissipation structure is located on the wind inlet side of the fan.

Optionally, the copying mechanism includes:

the light collecting seat is provided with a cavity, a light passing hole and a monitoring hole, the monitoring hole and the light passing hole are oppositely arranged, the monitoring hole and the light passing hole are respectively communicated with the cavity, the light collecting seat is provided with an inner wall surrounding the cavity, a first water cooling cavity surrounding the inner wall is arranged in the light collecting seat, a first water inlet joint and a first water outlet joint are arranged on the light collecting seat, and the first water inlet joint and the first water outlet joint are communicated with the first water cooling cavity;

the absorber is connected with the light receiving seat and used for blocking the monitoring hole;

the water cooling seat is arranged on one side of the absorber, which is away from the light receiving seat.

Optionally, the absorber is provided with a protruding part and a second connecting part, the protruding part is provided with a first side surface and a second side surface which are oppositely arranged, the first side surface protrudes from the water cooling seat to one side of the cavity, the second side surface is recessed from the water cooling seat to one side of the cavity, the second connecting part is positioned at the edge of the protruding part, which is away from one end of the light receiving seat, and the second connecting part is in sealing connection with the light receiving seat;

the water cooling seat is provided with a groove, a second water inlet connector and a third water inlet connector, the groove is provided with an opening facing the absorber, the water cooling seat is in sealing connection with one side, deviating from the light receiving seat, of the second connecting portion, the groove is communicated with the recess to form a second water cooling cavity, and the second water inlet connector and the third water inlet connector are communicated with the second water cooling cavity.

The embodiment of the application provides a heat radiation structure and copy machine device, heat radiation structure has the body, be equipped with mounting hole and cooling channel on the body, fix the collimation subassembly on the body through the mounting hole, the heat that the collimation subassembly sent is taken away through the body to the coolant medium of circulation in the cooling channel, for the collimation subassembly heat dissipation, overcome current problem that leads to the test result inaccurate because of the collimation subassembly generates heat, the body is integrated the fixed and radiating function of collimation subassembly, moreover, the steam generator is simple in structure, the radiating effect is good, make things convenient for the collimation subassembly installation and dismantlement.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort to a person skilled in the art.

For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.

Fig. 1 is a schematic structural view of a copying device provided in an embodiment of the present application.

Fig. 2 is a top view of a copying device provided in an embodiment of the present application.

Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A in fig. 2.

Fig. 4 is a schematic structural diagram of a heat dissipation structure according to an embodiment of the present application.

Fig. 5 is a top view of a heat dissipation structure according to an embodiment of the present application.

Fig. 6 is a sectional view of B-B in fig. 5.

Fig. 7 is a schematic structural diagram and an isometric view of a heat dissipation structure according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The embodiment of the application provides a heat radiation structure and a copying device, which aims at solving the problem that the test result is inaccurate due to the fact that a collimation component heats. The following description will be given with reference to the accompanying drawings.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A copying device provided in an embodiment of the present application, fig. 2 isbase:Sub>A top view of the copying device provided in an embodiment of the present application, fig. 3 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A in fig. 2, and fig. 4 isbase:Sub>A schematic structural diagram ofbase:Sub>A heat dissipation structure provided in an embodiment of the present application.

A copying device comprises a base 3, a heat dissipation structure 1 and a copying mechanism 4, wherein the heat dissipation structure 1 and the copying mechanism 4 are arranged on the base 3.

Referring to fig. 4, the heat dissipation structure 1 described above includes a body 11, a mounting hole 111 is provided on the body 11, the heat dissipation structure 1 is used for mounting a collimation component 2 of a laser to be tested, the collimation component 2 can be mounted in the mounting hole 111, the collimation jumper tube 22 is attached to the inner wall of the mounting hole 111, the light-emitting side of the collimation component 2 is opposite to the light-passing hole 412, the end of the collimation adjustment tube 21 is located in the light-passing hole 412 and attached to the inner wall of the light-passing hole 412, the body 11 supports and fixes the collimation component 2, the collimation component 2 and the copying machine mechanism 4 are fast abutted, a cooling channel 113 is provided in the body 11, an inlet 114 and an outlet 115 are provided on the body 11, the inlet 114 and the outlet 115 are respectively communicated with the cooling channel 113, the cooling channel 113 is communicated with an external cooling mechanism through the inlet 114 and the outlet 115, the cooling medium flows in the cooling channel 113, the cooling medium can be water, the cooling liquid and the like, the cooling medium takes away the heat of the body 11 for the collimation component 2, the occurrence of inaccurate test results of the laser due to the heat generated by the collimation component 2 is avoided, the testing effect of the copying machine device is good in reliability, the structure is simple, and the structure is convenient to detach.

Referring to fig. 4, the base 3 has a first plate 31 and a second plate 32, the first plate 31 is connected with the second plate 32, the first plate 31 is located below the light receiving seat 41, a notch matching with the first plate 31 is provided at the bottom of the light receiving seat 41, the light receiving seat 41 is connected with the first plate 31 by a bolt, the heat dissipation structure 1 is mounted on the second plate 32, the thickness of the second plate 32 is greater than that of the first plate 31, the heat dissipation structure 1 is lifted by the second plate 32, so that the mounting hole 111 and the light through hole 412 are coaxially arranged, the volume of the heat dissipation structure 1 is reduced, the overall structure of the copying device is compact, and the appearance is beautiful.

In some embodiments, referring to fig. 1, the copying device further includes a fan 5 mounted on the base 3, and the heat dissipation structure 1 is located on an air inlet side of the fan 5. The heat dissipation structure 1 is dissipated through the fan 5, so that the collimation assembly 2 can conduct heat and dissipate heat rapidly, and the reliability of the collimation assembly 2 is improved.

In some embodiments, referring to fig. 2 and fig. 4, the copying mechanism 4 includes a light receiving seat 41, an absorber 42 and a water cooling seat 43, a cylindrical cavity 411 is disposed in the light receiving seat 41, light passing holes 412 and monitoring holes 413 which are communicated with the cavity 411 are disposed at two ends of the light receiving seat 41, the light receiving seat 41 has an inner wall 414 surrounding the cavity 411, a first water cooling cavity 415 surrounding the inner wall 414 is disposed in the light receiving seat 41, a first water inlet connector 416 and a first water outlet connector 417 are disposed on the light receiving seat 41, the first water inlet connector 416 and the first water outlet connector 417 are communicated with the first water cooling cavity 415, the first water cooling cavity 415 is cylindrical, the first water cooling cavity 415 is connected with an external water cooling machine through the first water inlet connector 416 and the first water outlet connector 417, heat dissipation area of the light receiving seat 41 is increased, the heat dissipation effect of the light receiving seat 41 is improved, the light receiving seat 41 has an inner wall 414 surrounding the cavity 411, a photoelectric sensor 44 is disposed on the inner wall 414, the absorber 42 is mounted on the light receiving seat 41, the absorber 42 is far from the water cooling seat 43, and the water cooling cavity is connected with the absorber 43, the cooling mechanism is connected with the external water cooling machine, and the service life of the absorber is prolonged, and the service life of the copying mechanism is prolonged.

It can be appreciated that by arranging the first water cooling cavity 415 surrounding the inner wall 414 in the light receiving seat 41, the cooling area of the inner wall 414 is increased, the inner wall 414 absorbs the heat generated by laser to cool more sufficiently, the inner wall 414 is cooled rapidly, and the service life of the copying mechanism 4 is prolonged.

Referring to fig. 3, the copying device is used for testing the aging condition of a laser, the collimating assembly 2 of the laser comprises a collimating lens 20, a collimating adjusting cylinder 21 and a collimating jumper tube 22, the collimating lens 20 is installed in the collimating adjusting cylinder 21, the collimating jumper tube 22 is sleeved on the collimating adjusting cylinder 21, an optical fiber 23 is arranged on the collimating jumper tube 22, the collimating assembly 2 is connected with a laser generator through the optical fiber 23, a laser beam emitted by the laser generator passes through a cavity 411 from a light passing hole 412 after being collimated by the collimating assembly 2, the laser beam irradiates on an absorber 42, the absorber 42 uniformly reflects the laser beam onto the inner wall of the cavity 411, a light receiving seat 41 absorbs heat generated by the laser beam, a water cooling channel cools and dissipates heat on the inner wall of the cavity 411, and the laser to be tested is subjected to aging test through the copying mechanism 4.

In some embodiments, the absorber 42 has a protruding portion 421 and a second connecting portion 422, the protruding portion 421 has a first side 4211 and a second side 4212 that are disposed opposite to each other, the first side 4211 protrudes from the water-cooling seat 43 toward the cavity 411, the second side 4212 is recessed 4213 from the water-cooling seat 43 toward the cavity 411, the second connecting portion 422 is located at an edge of one end of the protruding portion 421 facing away from the light-receiving seat 41, the second connecting portion 422 is in sealing connection with the light-receiving seat 41, the second connecting portion 422 is a flange connection disc, the water-cooling seat 43 is provided with a groove 431, a second water inlet connector 433 and a third water inlet connector 434, the groove 431 has an opening facing the absorber 42, the water-cooling seat 43 is in sealing connection with one side of the second connecting portion 422 facing away from the light-receiving seat 41, the groove 431 communicates with the recess 4213 to form a second water-cooling cavity 432, and the second water inlet connector 433 and the third water inlet connector 434 communicate with the second water-cooling cavity 432.

It can be understood that the water cooling seat 43 is provided with the recess 431, the absorber 42 is provided with the recess 4213, the water cooling seat 43 is in sealing connection with the absorber 42, the recess 431 is communicated with the recess 4213 to form the second water cooling cavity 432, the cooling area is increased, rapid cooling of the absorber 42 is realized, the cooling effect is good, and the service life of the absorber 42 is prolonged.

In some embodiments, referring to fig. 1, the copying device further includes a fixing mechanism 6, which includes a fixing block 61, a tower buckle 62, a screw 63 and a locking ring 64, where the fixing block 61 is installed on the base 3 and is located on a side of the heat dissipation structure 1 facing away from the copying mechanism 4, an optical fiber groove 611 is provided on a side of the fixing block 61 facing away from the base 3, the cross section of the optical fiber groove 611 is in a V shape, the optical fiber groove 611 is used for installing the optical fiber 23, one end of the tower buckle 62 is hinged with the fixing block 61, the other end of the tower buckle 62 is connected with the fixing block 61 through the screw 63, the locking ring 64 is connected with the screw 63 to lock and fix the tower buckle 62 and the fixing block 61, and the collimating jumper tube 22 is fixed between the tower buckle 62 and the fixing block 61, and the optical fiber 23 is fixed by the fixing mechanism 6, so that the optical fiber 23, the collimating lens 20 and the cavity 411 are coaxially arranged, and the testing effect of the laser is ensured.

In addition, the copying device is also provided with a 24V power supply, a power supply fixing piece, an alarm circuit board and a relay circuit board, wherein the alarm circuit board and the relay circuit board are fixed at the top of the light receiving seat 41 through socket head cap screws and used for controlling and alarming abnormally, and can also detect the laser parameter change in the aging process in real time. The 24V power supply is fixed to the side of the light receiving seat 41 by a power supply fixing member.

In order to more clearly describe the structure of the heat dissipation structure 1, the heat dissipation structure 1 will be described below with reference to the accompanying drawings.

Referring to fig. 4, 5 and 6, fig. 4 is a schematic structural diagram of a heat dissipation structure provided in an embodiment of the present application, fig. 5 is a top view of the heat dissipation structure provided in the embodiment of the present application, and fig. 6 is a B-B cross-sectional view in fig. 5.

The heat dissipation structure 1 comprises a body 11, wherein the body 11 is provided with a mounting hole 111, the inner diameter of the mounting hole 111 is matched with the outer diameter of the collimation assembly 2, a cooling channel 113 is arranged in the body 11, the body 11 is provided with an inlet 114 and an outlet 115, and the inlet 114 and the outlet 115 are respectively communicated with the cooling channel 113.

The body 11 can be rectangular or rectangular-like structure to can realize setting up cooling channel 113 and support collimation subassembly 2 can, be connected with the outside water-cooling machine through cooling channel 113, to the cooling channel 113 in continuous provide cooling medium, take away the heat that collimation subassembly 2 produced can, the body 11 is prepared by the metal material, can be quick with the heat transfer that collimation subassembly 2 produced for cooling medium, carry out the heat exchange with cooling medium.

In some embodiments, referring to fig. 4, the mounting hole 111 has an opening 1111, and the end of the body 11 at the opening 1111 is provided with a first connection portion 112, the two first connection portions 112 are disposed opposite to each other, and the two first connection portions 112 are connected by a connection member 1121 to adjust the aperture of the mounting hole 111.

The first connecting portions 112 are ear plates extending outwards from the body 11, the two first connecting portions 112 are arranged at intervals, a gap between the two first connecting portions 112 is communicated with the mounting hole 111, screw holes are formed in the ear plates, the connecting pieces 1121 are bolts, the ear plates are located outside the body 11, the operation space is large, and the bolt installation and disassembly operations are facilitated. The collimation subassembly 2 is installed in mounting hole 111, the lock bolt, adjust the distance between the first connecting portion 112 to adjust the aperture size of mounting hole 111, make the inner wall of mounting hole 111 laminate with the outer wall of collimation subassembly 2, the area of contact increase of collimation subassembly 2 and body 11, the area increase of collimation subassembly 2 and body 11 heat exchange, the radiating effect is better, and the size of open-ended mounting hole 111 is adjustable, makes things convenient for collimation subassembly 2 installation and dismantlement.

In some embodiments, referring to fig. 6, the cooling channel 113 has a first sub-channel 1131, a second sub-channel 1132, and a third sub-channel 1133, where the first sub-channel 1131, the second sub-channel 1132, and the third sub-channel 1133 are sequentially connected in a direction from the inlet 114 to the outlet 115, and the first sub-channel 1131 and the third sub-channel 1133 are disposed opposite to each other, and are located on two sides of the cooling channel 113.

It can be understood that, along the direction perpendicular to the axis of the mounting hole 111, the cross-section of the cooling channel 113 is in a shape of a "U", the mounting hole 111 is located at the center of the area surrounded by the cooling channel 113, the inlet 114 and the outlet 115 are disposed on a side surface of the body 11 facing away from the base 3, so that the position of the cooling channel 113 surrounding the mounting hole 111 is increased as much as possible, the heat dissipation area is increased, and the heat dissipation effect is improved. As a modification, the positions and shapes of the cooling passages 113 may be arranged according to actual conditions, the cooling passages 113 may be provided in a plurality of stages, and the cooling passages 113 may be provided on both sides of the mounting hole 111 in an S-shaped arrangement, so that the heat dissipation area may be increased.

In some embodiments, referring to fig. 6, the body 11 includes a first sub-portion 116, a second sub-portion 117, and a heat dissipating grille 118, where the first sub-portion 116 encloses the mounting hole 111, the second sub-portion 117 is provided with the cooling channel 113, the second sub-portion 117 is provided with the inlet 114 and the outlet 115, and the first sub-portion 116 and the second sub-portion 117 are connected by the heat dissipating grille 118.

It can be appreciated that when the first connecting portion 112 is provided, the first sub-portion 116 has the first connecting portion 112 and a sidewall of the mounting hole 111, the first connecting portion 112 extends outwards from the sidewall of the opening, the first connecting portion 112 and the sidewall of the mounting hole 111 are integrally formed, and the processing technology is simple.

Referring to fig. 6, along the direction perpendicular to the axis of the mounting hole 111, the second sub-portion 117 is in a U shape, the second sub-portion 117 is located outside the first sub-portion 116, and partially surrounds the first sub-portion 116, and the heat dissipation grille 118 wraps the first sub-portion 116 and is located between the first sub-portion 116 and the second sub-portion 117, so that the heat dissipation effect of the body 11 is further improved, the heat dissipation grille 118 has a simple structure and can also be used as a reinforcing rib, and the structural strength of the body 11 is improved.

In some embodiments, referring to fig. 4, the body 11 further includes: the mounting plate 119, the second sub-portion 117 is disposed on the mounting plate 119, and the mounting plate 119 is provided with a through hole 1191.

The mounting plate 119 is a flange connection disc arranged on one side of the second sub-portion 117 away from the first connection portion 112, and the body 11 is quickly assembled and disassembled with the base 3 through the mounting plate 119, so that the operation is convenient.

The body 11 has a first sub-portion 116, a second sub-portion 117, a heat dissipation grille 118, and a mounting plate 119, which are integrally formed, and can be injection molded, and the processing technology is simple.

In some embodiments, referring to fig. 5, the first sub-portion 116 has a first side 1161 and a second side 1162, the second sub-portion 117 has a third side 1171 and a fourth side 1172, the first side 1161 is disposed opposite the second side 1162 along the axial direction of the mounting hole 111, the third side 1171 is disposed opposite the fourth side 1172, the first side 1161 is in the same plane as the third side 1171, and the second side 1162 extends out of the fourth side 1172 in a direction away from the first side 1161.

It can be understood that the thickness of the first sub-portion 116 is greater than that of the second sub-portion 117, the contact area between the first sub-portion 116 and the collimating component 2 is greater, the collimating component 2 is stably installed, the heat exchange area between the collimating component 2 and the first sub-portion 116 is increased, and the heat dissipation effect is improved.

In addition to the above embodiment, as shown in fig. 5, the heat dissipation grill 118 includes a plurality of heat dissipation fins 1181, the heat dissipation fins 1181 have a first heat dissipation portion 11811 and a second heat dissipation portion 11812, the first heat dissipation portion 11811 is located between the first sub-portion 116 and the second sub-portion 117, the first heat dissipation portion 11811 connects the first sub-portion 116 and the second sub-portion 117, and the second heat dissipation portion 11812 is mounted on the fourth side 1172 of the second sub-portion 117.

It can be appreciated that the plurality of heat dissipation fins 1181 are arranged at intervals along the axial direction of the first sub-channel 1131, and the surface of the first sub-portion 116 is provided with a plurality of first heat dissipation portions 11811, so that the heat dissipation area of the first sub-portion 116 is increased, the heat dissipation effect of the first sub-portion 116 is good, and the second heat dissipation portion 11812 is mounted on the second sub-portion 117 to dissipate heat to the second sub-portion 117, thereby further improving the heat dissipation effect of the body 11.

As a modification, the body 11 may have a unitary structure, and the heat radiation fins 1181 may be partially provided on the surface of the body 11, or the heat radiation fins 1181 may be provided entirely, so that heat radiation of the body 11 may be realized.

Referring to fig. 7, fig. 7 is a schematic axial view of a heat dissipation structure according to an embodiment of the present application.

In some embodiments, the inlet 114 and the outlet 115 are provided with right angle quick connectors 12, the right angle quick connectors 12 for connection to an external water chiller.

It can be understood that the body 11 is connected with an external water cooler through the right-angle quick connector 12, and the right-angle quick connector 12 not only can realize quick connection of pipelines, but also has simple structure, good sealing effect and convenient replacement.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features.

The heat dissipation structure and the copying device provided by the embodiment of the present application are described in detail, and specific examples are applied to illustrate the principles and the implementation of the present application, and the description of the above embodiments is only used for helping to understand the method and the core idea of the present application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.

Claims (10)

1. A heat dissipating structure for dissipating heat from a collimating assembly, comprising:

the body is provided with a mounting hole which is used for mounting the collimation assembly; the cooling device is characterized in that a cooling channel is arranged in the body, an inlet and an outlet are formed in the body, and the inlet and the outlet are respectively communicated with the cooling channel.

2. The heat dissipating structure of claim 1, wherein the mounting hole has an opening, the body is provided with first connecting portions at ends of the opening, the two first connecting portions are disposed opposite to each other, and the two first connecting portions are connected by a connecting member to adjust an aperture of the mounting hole.

3. The heat dissipating structure of claim 1, wherein the cooling channel has a first sub-channel, a second sub-channel, and a third sub-channel, the first sub-channel, the second sub-channel, and the third sub-channel are sequentially connected along a direction from the inlet to the outlet, and the first sub-channel and the third sub-channel are disposed opposite to each other and are located on two sides of the cooling channel.

4. The heat dissipating structure of claim 1, wherein said body comprises:

the first sub-part encloses the mounting hole;

the second sub-part is internally provided with the cooling channel;

and the first sub-part and the second sub-part are connected through the heat radiation grille.

5. The heat dissipating structure of claim 4, wherein said body further comprises a mounting plate, said second sub-portion being disposed on said mounting plate, said mounting plate being provided with a through hole.

6. The heat dissipating structure of claim 4, wherein the first sub-portion has a first side and a second side, the second sub-portion has a third side and a fourth side, the first side is disposed opposite the second side in the axial direction of the mounting hole, the third side is disposed opposite the fourth side, the first side and the third side are in the same plane, and the second side extends out of the fourth side in a direction away from the first side.

7. A copying apparatus, comprising:

a base;

a heat dissipating structure as defined in any one of claims 1 to 6 for dissipating heat from a collimating component of a laser to be tested;

and the heat dissipation structure and the copying mechanism are both installed on the base, the body is attached to the copying mechanism, the copying mechanism is provided with a light-passing hole, and the installation hole is opposite to the light-passing hole.

8. The copying apparatus according to claim 7, further comprising a fan mounted to said base, said heat dissipating structure being located on an air intake side of said fan.

9. The copying apparatus according to claim 7, wherein said copying mechanism includes:

the light collecting seat is provided with a cavity, a light passing hole and a monitoring hole, the monitoring hole and the light passing hole are oppositely arranged, the monitoring hole and the light passing hole are respectively communicated with the cavity, the light collecting seat is provided with an inner wall surrounding the cavity, a first water cooling cavity surrounding the inner wall is arranged in the light collecting seat, a first water inlet joint and a first water outlet joint are arranged on the light collecting seat, and the first water inlet joint and the first water outlet joint are communicated with the first water cooling cavity;

the absorber is connected with the light receiving seat and used for blocking the monitoring hole;

the water cooling seat is arranged on one side of the absorber, which is away from the light receiving seat.

10. The copying machine according to claim 9, wherein said absorber has a convex portion having a first side surface and a second side surface which are disposed opposite to each other, said first side surface rising from said water-cooling seat toward said cavity side, said second side surface being recessed from said water-cooling seat toward said cavity side, and a second connecting portion located at an edge of said convex portion facing away from one end of said light receiving seat, said second connecting portion being in sealing connection with said light receiving seat;

the water cooling seat is provided with a groove, a second water inlet connector and a third water inlet connector, the groove is provided with an opening facing the absorber, the water cooling seat is in sealing connection with one side, deviating from the light receiving seat, of the second connecting portion, the groove is communicated with the recess to form a second water cooling cavity, and the second water inlet connector and the third water inlet connector are communicated with the second water cooling cavity.

Images