CN221389338U - Laser light path transmission structure and water cooling structure - Google Patents

Abstract

The utility model discloses a laser light path transmission structure and a water cooling structure, which belong to the technical field of laser processing equipment and comprise a mounting plate; the collimation mounting seat is provided with a first light propagation channel and a second light propagation channel which are communicated with each other, and a reflecting lens is arranged at the joint of the first light propagation channel and the second light propagation channel; the laser output head is positioned at one end of the first light propagation channel; the generated laser beam is reflected by the reflecting mirror plate and then propagates along the second light propagation channel; the vibrating mirror is provided with a reflecting cavity, and the reflecting cavity is communicated with the second light propagation channel; the field lens is communicated with the reflecting cavity; a circulating waterway passing through the mounting plate, the collimation mounting seat, the field lens and the vibrating lens; the laser beam generated by the laser output head can be stably conducted along the closed laser light path formed by the first light propagation channel, the reflecting mirror, the second light propagation channel and the reflecting cavity, and the circulating waterway completely surrounds the laser light path, so that the temperature of optical components in the equipment is ensured to be within a reasonable range.

Description

Laser light path transmission structure and water cooling structure

Technical Field

The utility model relates to the technical field of laser processing equipment, in particular to a laser path transmission structure and a water cooling structure.

Background

Laser processing refers to a processing method for removing a target material by heating the surface of a workpiece by a high-energy laser beam to make the workpiece reach a molten state; the laser processing belongs to non-contact processing and has the advantages of high processing speed, small surface deformation and the like; the laser path is a transmission path of laser beams, the laser beams in the laser processing equipment are generated from a laser output head of the laser generator, the laser beams reach a focusing processing position through a transmission optical fiber, a collimation mounting seat, a vibrating mirror and a field lens, a large amount of heat can be generated by the high-energy laser beams in the transmission process of the laser beams, curvature change can be generated after various optical lens coating films in the laser processing equipment are heated, so that a temperature drift effect is generated on the laser path, and the transmission precision of the laser path is influenced.

Therefore, the research and development design of the laser path transmission structure and the water cooling structure which can enable the laser beam to be stably conducted along the laser path and ensure that the temperature of optical components in the equipment is in a reasonable range is a problem to be solved in the prior art.

Disclosure of utility model

For the problems in the prior art, the laser beam generated by the laser output head can be stably conducted along a closed laser path formed by the first light propagation channel, the reflecting mirror, the second light propagation channel and the reflecting cavity, and is not influenced by external environment; and the circulating waterway completely surrounds the laser light path, so that the temperature of optical components in the equipment is ensured to be in a reasonable range, the conduction precision of the laser light path is ensured, and the service life is prolonged.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

In one aspect, the present utility model provides a laser light path transmission structure, including:

A mounting plate mountable to a machine tool;

The collimation mounting seat is fixed on the mounting plate; the collimating mounting seat is internally provided with a first light propagation channel and a second light propagation channel which are communicated with each other, and a reflecting lens which is obliquely arranged is arranged at the joint of the first light propagation channel and the second light propagation channel;

The laser output head is fixed on the collimation mounting seat; the laser output head is positioned at one end of the first light propagation channel away from the reflecting mirror plate; the laser beam generated by the laser output head is reflected by the reflecting mirror plate and then propagates along the second light propagation channel;

the vibrating mirror is fixedly connected with the collimation mounting seat; the vibrating mirror is internally provided with a reflecting cavity which is communicated with the second light propagation channel;

And the field lens is fixed on the vibrating mirror and is communicated with the reflecting cavity.

As a preferable technical scheme, a gland is arranged at the joint of the first light transmission channel and the second light transmission channel, and the reflecting lens is arranged on the gland;

And/or the axes of the first light propagation channel and the second light propagation channel are perpendicular to each other, and the inclination angle of the reflecting mirror plate is set to be 45 degrees.

As an optimized technical scheme, the collimation mounting seat is provided with a connecting plate, and the connecting plate is fixedly connected with the vibrating mirror.

As a preferable technical scheme, the connecting plate is provided with a through hole for communicating the second light propagation channel with the reflecting cavity;

And/or the mounting plate is fixedly connected with the alignment mounting seat, the alignment mounting seat is fixedly connected with the connecting plate and the vibrating mirror through screws;

And/or positioning pins are arranged between the mounting plate and the alignment mounting seat, between the alignment mounting seat and the connecting plate and between the connecting plate and the vibrating mirror.

As a preferable technical scheme, the collimation mounting seat is provided with a placing cavity coaxially arranged with the first light transmission channel, and part of the laser output head extends into the placing cavity.

As a preferable technical scheme, first sealing rings are embedded between the placing cavity and the laser output head, between the collimation mounting seat and the connecting plate and between the connecting plate and the vibrating mirror.

In a second aspect, the utility model provides a water cooling structure, which comprises the laser light path transmission structure and a circulating water path, wherein the circulating water path passes through the mounting plate, the collimation mounting seat, the field lens and the vibrating mirror.

As a preferred technical scheme, the circulating waterway comprises a first pore canal penetrating through the mounting plate, a second pore canal penetrating through the collimation mounting seat, a third pore canal penetrating through the field lens and a fourth pore canal penetrating through the vibrating lens, wherein the first pore canal is communicated with the second pore canal, the second pore canal is communicated with the third pore canal through a pipeline, and the third pore canal is communicated with the fourth pore canal through a pipeline.

As a preferable technical scheme, the collimation mounting seat is provided with a fifth through hole, the mounting plate is provided with a sixth through hole, the fourth through hole is communicated with the fifth through hole through a pipeline, and the fifth through hole is communicated with the sixth through hole.

As a preferable technical scheme, second sealing rings are respectively arranged between the mounting plate and the collimation mounting seat at the communication position of the first pore canal and the second pore canal and at the communication position of the fifth pore canal and the sixth pore canal;

And/or the first pore canal is provided with a water-cooling inlet, the second pore canal is provided with a first water-cooling transfer port, two ends of the fourth pore canal are respectively provided with a second water-cooling transfer port and a third water-cooling transfer port, the fifth pore canal is provided with a fourth water-cooling transfer port, and the sixth pore canal is provided with a water-cooling outlet;

and/or the second duct and the fifth duct are respectively positioned at two sides of the laser output head;

and/or the third pore canal is arranged around the field lens;

and/or the fourth aperture is disposed around the reflective cavity.

The beneficial effects of the utility model are as follows:

1. The utility model can form a closed laser light path by utilizing the first light propagation channel, the reflecting mirror, the second light propagation channel and the reflecting cavity in the vibrating mirror in the collimation mounting seat, the laser output head can be stably fixed at one end of the first light propagation channel far away from the reflecting mirror, and the laser beam generated by the laser output head can be stably conducted along the laser light path and emitted from the field mirror without being influenced by external environment; meanwhile, the circulating waterway completely surrounds the laser light path, can exchange heat with heat generated by the laser beam in time, ensures that the temperature of optical components in the equipment is in a reasonable range, ensures the conduction precision of the laser light path, and prolongs the service life.

2. The first sealing rings are embedded between the placing cavity and the laser output head, between the collimation mounting seat and the connecting plate and between the connecting plate and the vibrating mirror, and seal the connecting position in the laser path, so that a good dustproof effect can be achieved, and the precision and the service life of optical components in the device are ensured.

3. The utility model can effectively ensure the communication tightness between the first pore canal and the second pore canal and between the fifth pore canal and the sixth pore canal by utilizing the second sealing ring, and ensure that the cooling liquid stably flows along the circulating waterway without leakage at the joint of the pore canals.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of a laser path transmission structure according to the present utility model;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction B-B in FIG. 2;

FIG. 5 is a cross-sectional view taken along the direction C-C in FIG. 2;

fig. 6 is a sectional view taken along the direction D-D in fig. 2.

In the figure: 1-mounting plate, 2-collimation mount, 21-first light propagation channel, 22-second light propagation channel, 23-reflection lens, 24-gland, 25-placement cavity, 3-laser output head, 4-galvanometer, 41-reflection cavity, 5-field lens, 6-connecting plate, 61-through hole, 71-screw, 72-locating pin, 73-first sealing ring, 74-second sealing ring, 81-first pore canal, 82-second pore canal, 83-third pore canal, 84-fourth pore canal, 85-fifth pore canal, 86-sixth pore canal, 91-water cooling inlet, 92-first water cooling conversion interface, 93-second water cooling conversion interface, 94-third water cooling conversion interface, 95-fourth water cooling conversion interface, 96-water cooling outlet.

Detailed Description

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

1-4, An embodiment of a laser light path transmission structure provided by the utility model comprises a mounting plate 1 capable of being mounted on a machine tool, wherein the laser light path transmission structure can be conveniently fixed on the machine tool through the mounting plate 1, and the machine tool can drive the laser light path transmission structure to move; the laser output head 3 is fixed on the collimation mounting seat 2, the collimation mounting seat 2 is fixed on the mounting plate 1, a first light propagation channel 21 and a second light propagation channel 22 which are mutually communicated are arranged in the collimation mounting seat 2, a reflection lens 23 which is obliquely arranged is arranged at the joint of the first light propagation channel 21 and the second light propagation channel 22, the laser output head 3 is positioned at one end of the first light propagation channel 21 far away from the reflection lens 23, and a laser beam generated by the laser output head 3 is reflected by the reflection lens 23 and then propagates along the second light propagation channel 22; the galvanometer 4 is fixedly connected with the collimation mount 2, the field lens 5 is fixed on the galvanometer 4, the reflecting cavity 41 in the galvanometer 4 is communicated with the second light propagation channel 22, the laser beam enters the reflecting cavity 41 along the second light propagation channel 22, is reflected by the reflecting cavity 41 and then is emitted from the field lens 5, and the laser beam can be stably conducted along a laser light path formed by the first light propagation channel 21, the reflecting mirror 23, the second light propagation channel 22 and the reflecting cavity 41 in the galvanometer 4.

The dashed line in fig. 3 is a conducting path of the laser beam.

In this embodiment, referring to fig. 4, a gland 24 is disposed at the connection position of the first light propagation channel 21 and the second light propagation channel 22, and the reflecting mirror 23 can be conveniently mounted on the gland 24 and can precisely control the inclination angle of the reflecting mirror 23; specifically, the axes of the first light propagation path 21 and the second light propagation path 22 are perpendicular to each other, and at this time, the inclination angle of the reflection mirror plate 23 is set to 45 ° accordingly.

In this embodiment, referring to fig. 1, 3 and 4, a connecting plate 6 is disposed between the collimating mounting base 2 and the galvanometer 4, and the connecting plate 6 is used for conveniently realizing the fixed connection between the collimating mounting base 2 and the galvanometer 4; specifically, the connection plate 6 should have a through hole 61 for connecting the second light propagation channel 22 with the reflective cavity 41, so as to ensure that the laser beam is conducted along the laser light path.

In this embodiment, referring to fig. 1 to 3, the mounting plate 1 is fixedly connected with the alignment mounting seat 2, the alignment mounting seat 2 is fixedly connected with the connecting plate 6, and the connecting plate 6 is fixedly connected with the vibrating mirror 4 through screws 71, so that the mounting is simple and convenient, and sufficient connection stability can be ensured; furthermore, the positioning pins 72 are arranged between the mounting plate 1 and the alignment mounting seat 2, between the alignment mounting seat 2 and the connecting plate 6 and between the connecting plate 6 and the vibrating mirror 4, and the positioning pins 72 can rapidly position the relative positions, so that the mounting is convenient, and the mounting precision can be improved.

In this embodiment, referring to fig. 4, the collimating mounting base 2 has a placement cavity 25 coaxially disposed with the first light propagation channel 21, a part of the laser output head 3 extends into the placement cavity 25, and the laser output head 3 is in clearance fit with the placement cavity 25, so that the position accuracy of the laser output head 3 can be improved while the laser output head 3 is conveniently mounted, and the emission direction of the laser beam is ensured to be accurate and stable; further, all inlay first sealing washer 73 between placing chamber 25 and the laser output head 3, between collimation mount pad 2 and the connecting plate 6 and between connecting plate 6 and the galvanometer 4, first sealing washer 73 is sealed with the junction gap in the laser light path, avoids the dust to enter into the laser light path in, plays dustproof effect, guarantees the inside precision and the life of optical components and parts of equipment.

In a second aspect, referring to fig. 1 to fig. 6, an embodiment of a water cooling structure provided by the present utility model includes the foregoing laser light path transmission structure and a circulation water path, the circulation water path passes through the mounting plate 1, the collimation mounting seat 2, the field lens 5 and the vibrating mirror 4, the circulation water path is filled with a cooling liquid, the cooling liquid flows along the circulation water path, and cools the mounting plate 1, the collimation mounting seat 2, the field lens 5 and the vibrating mirror 4, so that the temperature of optical components inside the device is ensured to be within a reasonable range, the conduction precision of the laser light path is ensured, and the service life is prolonged.

In this embodiment, referring to fig. 5 and 6, the circulation waterway includes a first channel 81 penetrating through the mounting plate 1, a second channel 82 penetrating through the collimation mounting seat 2, a third channel 83 penetrating through the field lens 5, and a fourth channel 84 penetrating through the vibration lens 4, where the first channel 81 is communicated with the second channel 82, the second channel 82 is communicated with the third channel 83 through a pipeline, the third channel 83 is communicated with the fourth channel 84 through a pipeline, and the cooling liquid sequentially flows through the first channel 81, the second channel 82, the third channel 83, and the fourth channel 84, so as to exchange heat with the mounting plate 1, the collimation mounting seat 2, the field lens 5, and the vibration lens 4, respectively, thereby realizing cooling.

On the basis of the foregoing embodiment, referring to fig. 5 and 6, the collimating mounting seat 2 is provided with a fifth through hole 85, the mounting plate 1 is provided with a sixth through hole 86, the fourth through hole 84 is communicated with the fifth through hole 85 through a pipeline, the fifth through hole 85 is communicated with the sixth through hole 86, the cooling liquid flows through the fifth through hole 85 and the sixth through hole 86 in sequence after flowing out from the fourth through hole 84, and the cooling liquid can exchange heat with the collimating mounting seat 2 and the mounting plate 1 again, so that the circulating waterway is arranged around the laser path, and the overall cooling effect on the laser path is improved.

In this embodiment, referring to fig. 5, the second sealing rings 74 are respectively disposed at the communicating positions of the first hole 81 and the second hole 82 and the communicating positions of the fifth hole 85 and the sixth hole 86 between the mounting plate 1 and the alignment mounting base 2, and the second sealing rings 74 can ensure the tightness of the communicating between the first hole 81 and the second hole 82 and between the fifth hole 85 and the sixth hole 86, so as to ensure that the cooling liquid cannot leak.

Specifically, referring to fig. 5 and 6, a water cooling inlet 91 should be disposed on the first duct 81, and the cooling liquid is conveniently guided into the first duct 81 through the water cooling inlet 91; the second duct 82 is provided with a first water-cooling transfer port 92, and the second duct 82 and the third duct 83 can be conveniently communicated by using a pipeline through the first water-cooling transfer port 92; the two ends of the fourth pore canal 84 are respectively provided with a second water-cooling transfer port 93 and a third water-cooling transfer port 94, and the fourth pore canal 84 can be conveniently communicated with the third pore canal 83 by using a pipeline through the second water-cooling transfer port 93; the fifth pore canal 85 is provided with a fourth water-cooling transfer port 95, and the fourth pore canal 84 can be conveniently communicated with the fifth pore canal 85 by using a pipeline through the third water-cooling transfer port 94 and the fourth water-cooling transfer port 95; the sixth port 86 is provided with a water-cooled outlet 96, and the cooling liquid is conveniently discharged through the water-cooled outlet 96.

It should be noted that, referring to fig. 2, 5 and 6, in order to ensure the cooling effect, the second duct 82 and the fifth duct 85 should be located at two sides of the laser output head 3, and can perform heat exchange cooling from two sides of the laser path; similarly, the third hole 83 should be disposed around the field lens 5, and the fourth hole 84 should be disposed around the reflective cavity 41, so as to ensure heat dissipation and cooling effects.

It should be noted that, the dashed lines in fig. 5 and 6 are flow paths of the cooling liquid, and the piping for connecting the transfer port and the duct is not shown for convenience of illustration.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A laser light path transmission structure, comprising:

A mounting plate (1), the mounting plate (1) being mountable on a machine tool;

The collimation mounting seat (2), the collimation mounting seat (2) is fixed on the mounting plate (1); the collimating mounting seat (2) is internally provided with a first light propagation channel (21) and a second light propagation channel (22) which are communicated with each other, and a reflecting lens (23) which is obliquely arranged is arranged at the joint of the first light propagation channel (21) and the second light propagation channel (22);

The laser output head (3) is fixed on the collimation mounting seat (2); the laser output head (3) is positioned at one end of the first light propagation channel (21) away from the reflecting mirror plate (23); the laser beam generated by the laser output head (3) is reflected by the reflecting mirror (23) and then propagates along the second light propagation channel (22);

The vibrating mirror (4) is fixedly connected with the collimation mounting seat (2); the vibrating mirror (4) is internally provided with a reflecting cavity (41), and the reflecting cavity (41) is communicated with the second light transmission channel (22);

And the field lens (5) is fixed on the vibrating mirror (4), and the field lens (5) is communicated with the reflecting cavity (41).

2. A laser light path transmission structure according to claim 1, wherein a gland (24) is provided at the junction of the first light propagation channel (21) and the second light propagation channel (22), and the reflecting mirror (23) is mounted on the gland (24);

and/or, the axes of the first light propagation channel (21) and the second light propagation channel (22) are perpendicular to each other, and the inclination angle of the reflecting mirror plate (23) is set to 45 degrees.

3. The laser path transmission structure according to claim 1, wherein the collimating mounting base (2) is provided with a connecting plate (6), and the connecting plate (6) is fixedly connected with the vibrating mirror (4).

4. A laser light path transmission structure according to claim 3, characterized in that the connection plate (6) has a through hole (61) communicating the second light propagation channel (22) with the reflecting cavity (41);

And/or the mounting plate (1) is fixedly connected with the collimation mounting seat (2), the collimation mounting seat (2) is fixedly connected with the connecting plate (6) and the vibrating mirror (4) through screws (71);

And/or locating pins (72) are arranged between the mounting plate (1) and the collimation mounting seat (2), between the collimation mounting seat (2) and the connecting plate (6) and between the connecting plate (6) and the vibrating mirror (4).

5. A laser path transfer structure according to claim 3, wherein the collimating mounting base (2) has a placement cavity (25) coaxially disposed with the first light propagation channel (21), and a portion of the laser output head (3) extends into the placement cavity (25).

6. The laser path transmission structure according to claim 5, wherein a first sealing ring (73) is embedded between the placement cavity (25) and the laser output head (3), between the collimation mounting seat (2) and the connecting plate (6) and between the connecting plate (6) and the vibrating mirror (4).

7. A water cooling structure, characterized by comprising a laser light path transmission structure and a circulating water path according to any one of claims 1-6, wherein the circulating water path passes through the mounting plate (1), the collimation mounting seat (2), the field lens (5) and the vibrating lens (4).

8. A water cooling structure according to claim 7, wherein the circulation water path comprises a first duct (81) penetrating the mounting plate (1), a second duct (82) penetrating the collimating mounting seat (2), a third duct (83) penetrating the field lens (5) and a fourth duct (84) penetrating the vibrating lens (4), the first duct (81) being in communication with the second duct (82), the second duct (82) being in communication with the third duct (83) by a pipe, the third duct (83) being in communication with the fourth duct (84) by a pipe.

9. The water cooling structure according to claim 8, wherein a fifth through hole (85) is formed in the alignment mounting base (2), a sixth through hole (86) is formed in the mounting plate (1), the fourth through hole (84) is communicated with the fifth through hole (85) through a pipe, and the fifth through hole (85) is communicated with the sixth through hole (86).

10. A water cooling structure according to claim 9, wherein a second sealing ring (74) is respectively arranged between the mounting plate (1) and the collimation mounting seat (2) at the communication position of the first pore canal (81) and the second pore canal (82) and at the communication position of the fifth pore canal (85) and the sixth pore canal (86);

And/or, the first pore canal (81) is provided with a water cooling inlet (91), the second pore canal (82) is provided with a first water cooling conversion port (92), two ends of the fourth pore canal (84) are respectively provided with a second water cooling conversion port (93) and a third water cooling conversion port (94), the fifth pore canal (85) is provided with a fourth water cooling conversion port (95), and the sixth pore canal (86) is provided with a water cooling outlet (96);

And/or the second pore canal (82) and the fifth pore canal (85) are respectively positioned at two sides of the laser output head (3);

And/or the third duct (83) is arranged around the field lens (5);

And/or the fourth aperture (84) is arranged around the reflective cavity (41).