Laser head device of engraving machine

Abstract

The utility model discloses a laser head device of an engraving machine, which relates to the field of laser processing, and comprises a laser module, a laser emitting part, a first reflecting mirror and a second reflecting mirror are arranged in the main body, one side of the main body is provided with a light outlet, and the other side of the main body is provided with a light source; the laser emitting part emits a laser beam in the vertical direction and emits the laser beam to the first reflecting mirror, the first reflecting mirror reflects the laser beam, the laser beam deflects by 90 degrees and is emitted out through the light outlet, and the front focusing lens is arranged at the light outlet and used for focusing the laser beam to form a focused beam; the galvanometer assembly comprises a shell and a second reflector, the shell is provided with a reflection cavity and an exit port communicated with the reflection cavity, and the second reflector is arranged in the reflection cavity and reflects the focused light beam to be emitted out through the exit port. Compared with a traditional laser device of the engraving machine, the laser head device of the engraving machine is small in size and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser processing technical field, especially relate to a kind of engraving machine laser head device. BACKGROUND

[0002] Laser technology has experienced rapid development since the middle of the 20th century, from the initial solid-state laser to the later semiconductor laser, the technology continues to progress. In the early 21st century, semiconductor lasers have rapidly developed due to their small size, light weight, high efficiency, low energy consumption, long life and other advantages, becoming an important part of laser technology.

[0003] The existing engraving machine laser device light emitting mechanism is mostly straight light emitting, which is large in size and affects the operation experience of the entire engraving machine. UTILITARY MODEL

[0004] The main purpose of the utility model is to provide a kind of engraving machine laser head device, to solve the technical problem that the volume of current engraving machine laser device is large and affects operation.

[0005] To achieve the above purpose, the engraving machine laser head device provided by the utility model comprises:

[0006] The laser module comprises a main body and a front focusing lens, the main body is internally provided with a laser emitting element and a first reflector, a light outlet is formed on one side of the main body, the laser emitting element emits a laser beam in the vertical direction and is incident on the first reflector, the first reflector reflects the laser beam by 90 degrees and emits it through the light outlet, and the front focusing lens is arranged at the light outlet and is used for focusing the laser beam to form a focused beam; and

[0007] The galvanometer assembly comprises a housing and a second reflector, the housing is provided with a reflection cavity and an outlet port communicated with the reflection cavity, and the second reflector is arranged in the reflection cavity and reflects the focused beam to emit it through the outlet port.

[0008] In an embodiment, the engraving machine laser head further comprises a main control board, which is arranged on one side of the laser module and electrically connected with the laser module.

[0009] In an embodiment, the galvanometer assembly further comprises a galvanometer drive board and a galvanometer motor, the galvanometer drive board is arranged on one side of the main body and electrically connected with the main control board, the galvanometer motor is electrically connected with the galvanometer drive board, the galvanometer motor is also connected with the second reflector, and drives the second reflector to rotate.

[0010] In an embodiment, the galvanometer driving board is connected with a first connecting piece, the first connecting piece is also connected with the main body, the first connecting piece is connected with a first spacing piece, the first spacing piece is arranged between the galvanometer driving board and the main body, so that a first heat dissipation space is formed between the galvanometer driving board and the main body.

[0011] In an embodiment, the main control board is connected with a second connecting piece, the second connecting piece is also connected with the main body, the second connecting piece is connected with a second spacing piece, the second spacing piece is arranged between the main control board and the main body, so that a second heat dissipation space is formed between the main control board and the main body.

[0012] In an embodiment, the laser head device of the engraving machine further comprises a heat dissipation assembly, the heat dissipation assembly comprises a heat dissipation fin, the laser emitting element comprises a heating surface, the heat dissipation fin is arranged inside the main body and closely attached to the heating surface, and the heat dissipation fin is used for heat exchange with the heating surface.

[0013] In an embodiment, one end of the main body is provided with an air outlet, the heat dissipation assembly further comprises a heat dissipation fan, the heat dissipation fan is arranged at an end of the main body away from the air outlet, the heat dissipation fan blows air towards the heat dissipation fin to generate a heat dissipation airflow, and the heat dissipation airflow passes through the heat dissipation fin and is discharged from the air outlet.

[0014] In an embodiment, the laser module further comprises a thermistor, the thermistor is used for sensing the temperature of the laser emitting element, and the thermistor is electrically connected with the main control board.

[0015] In an embodiment, the laser head device of the engraving machine further comprises a housing and a base, the housing is provided with a cavity, the laser module and the galvanometer assembly are arranged in the cavity, the base is arranged at one end of the housing and is provided with a laser port in communication with the cavity, the laser port is arranged opposite to the outlet, and the focused light beam is emitted from the base through the laser port.

[0016] In an embodiment, the laser head device of the engraving machine further comprises a top cover, the top cover is arranged at an end of the housing away from the base, the top cover is provided with a key, a display screen and a power control board, and the key and the display screen are electrically connected with the power control board.

[0017] The utility model discloses technical scheme through adopting the laser module's main part in setting up laser emitting element and first mirror, make laser emitting element emit laser beam 90 degrees deflection through first mirror reflection, from the main part side edge's light outlet camera mirror subassembly, of course, still focus through the front focusing lens before the incidence mirror subassembly, form the focusing beam that can carry out laser engraving and processing. Further, the second mirror of mirror subassembly reflects the focused light beam and emits from the exit port to carry out laser engraving and processing. Thus, relative to the traditional straight light of laser engraver, laser beam does not need the field mirror focusing of large volume before engraving and processing, and the laser head of engraver is small in whole volume, and convenient control operation, portable, and the operation experience of whole machine is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to be used in the embodiment or prior art description simple introduction, obviously, the drawing in the following description only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying the creative labor, still can obtain other drawings according to the structure shown in these drawings.

[0019] Figure 1 It is the structure schematic diagram of angle of the laser head device for engraver embodiment provided by the utility model,

[0020] Figure 2 It is a part of structure schematic diagram of the laser head device for engraver embodiment provided by the utility model,

[0021] Figure 3 It is the structure schematic diagram of another angle of the laser head device for engraver embodiment provided by the utility model,

[0022] Figure 4 It is the structure schematic diagram of still another angle of the laser head device for engraver embodiment provided by the utility model,

[0023] Figure 5 It is the structure schematic diagram of the laser head device for engraver embodiment provided by the utility model,

[0024] Figure 6 It is still a part of structure schematic diagram of the laser head device for engraver embodiment provided by the utility model,

[0025] Figure 7 It is the structure schematic diagram of the laser head device for engraver embodiment provided by the utility model.

[0026] EXPLANATION OF DRAWINGS:

[0027] 100, laser module;110, main part;111, light outlet;120, front focusing lens,

[0028] 200, galvanometer assembly; 210, shell; 220, second mirror; 230, exit port; 240, galvanometer drive board; 250, galvanometer motor;

[0029] 300, main control board;

[0030] 400, first connecting piece; 410, first spacer; 420, first heat dissipation space; 430, second spacer; 440, second heat dissipation space;

[0031] 500, heat dissipation assembly; 510, heat dissipation fin; 520, heat dissipation fan; 530, air outlet;

[0032] 600, base;

[0033] 700, top cover; 710, key; 720, display screen; 730, power control board.

[0034] The realization, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0036] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0037] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0038] In the prior art, the light emitting mechanism of the traditional laser device of the engraving machine is mostly straight light emitting, which is large in size and affects the operation experience of the whole machine.

[0039] The utility model provides a kind of engraving machine laser head device.

[0040] Please refer to Figures 1 to 7 In an embodiment of the utility model, the engraving machine laser head device includes: laser module 100 and galvanometer assembly 200, wherein the laser module 100 includes main body 110 and front focusing lens 120, laser emitting element and first mirror are arranged inside main body 110, light outlet 111 is arranged on one side of main body 110, laser emitting element emits laser beam along vertical direction and is incident to first mirror, first mirror reflects laser beam and deflects 90 degrees and is emitted through light outlet 111, front focusing lens 120 is arranged at light outlet 111 and is used to focus laser beam to form focused beam;Galvanometer assembly 200 includes shell 210 and second mirror 220, shell 210 is provided with reflection cavity and emission port 230 communicated with reflection cavity, second mirror 220 is arranged in reflection cavity, and focused beam is reflected and emitted through emission port 230.

[0041] In the embodiment, galvanometer assembly 200 is located at the side of laser module 100 provided with light outlet 111, laser beam is generated in laser module 100 and emitted to galvanometer assembly 200 through light outlet 111. In the specific implementation process, the laser emitting element is a semiconductor laser diode and includes pump source and chip, wherein the pump source injects current, and the chip is a semiconductor material, which acts as a gain medium and a pump receiver, the pump source and the chip work together to generate laser through excitation and amplification process.

[0042] It should be noted that the laser beam shaping is crucial for adjusting the irradiance and phase distribution of the laser module 100 output beam, and the first mirror deflects the laser beam generated by the laser emitter by 90 degrees, while improving the uniformity of the laser beam to meet the needs of specific applications. In the embodiment, the laser emitter emits a laser beam along the vertical direction of the main body 110, and the first mirror deflects the laser beam by 90 degrees so that it is emitted along the horizontal direction. Correspondingly, the light outlet 111 is provided on one side of the main body 110, and the front focusing lens 120 is installed at the light outlet 111, which is used to focus the laser beam and form a focused beam capable of performing engraving work. The focused beam is incident to the galvanometer assembly 200, and it can be understood that the sidewall of the housing 210 of the galvanometer assembly 200 is provided with an entrance corresponding to the light outlet 111, and the entrance cooperates with the second mirror 220 to make the focused beam incident to the second mirror 220 through the entrance, and the second mirror 220 reflects the focused beam to the exit 230, wherein the exit 230 is located at the bottom of the housing 210, so that the focused beam is emitted through the exit 230 and performs engraving work.

[0043] The technical scheme of the utility model discloses by adopting the laser emitter and the first mirror arranged in the main body 110 of the laser module 100, the laser beam emitted by the laser emitter is reflected and deflected by 90 degrees by the first mirror, and the laser beam is incident to the galvanometer assembly 200 from the light outlet 111 on the side of the main body 110, and of course, the laser beam is focused by the front focusing lens 120 before being incident to the galvanometer assembly 200, forming a focused beam capable of performing laser engraving processing. Further, the second mirror 220 of the galvanometer assembly 200 reflects the focused beam to be emitted from the exit 230 to perform laser engraving processing. In this way, compared with the traditional straight light output laser engraver, the focused beam does not need to be focused by a large volume field lens before performing engraving processing, the overall volume of the laser head of the engraver is small, the control operation is convenient, portable, and the operation experience of the whole machine is improved.

[0044] Reference Figure 1 And Figure 2 In an embodiment, the laser head of the engraver further comprises a main control board 300, which is arranged on one side of the laser module 100 and electrically connected with the laser module 100. In the specific implementation process, the main control board 300 is a PCB board and is provided with a plurality of electronic components for controlling the operation of the laser module 100.

[0045] Further, the galvanometer assembly 200 further comprises a galvanometer drive board 240 and a galvanometer motor 250, the galvanometer drive board 240 is arranged on one side of the main body 110 and electrically connected with the main control board 300, the galvanometer motor 250 is electrically connected with the galvanometer drive board 240, and the galvanometer motor 250 is also connected with the second mirror 220 and drives the second mirror 220 to rotate.

[0046] In the embodiment, the galvanometer driving board 240 is a PCB board for controlling the vibration motor to act, and the galvanometer driving board 240 is electrically connected to the main control board 300 through FPC for signal transmission. In the embodiment, the galvanometer motor 250 and the second reflecting mirror 220 are provided in two groups, and the extension directions of the two groups of second reflecting mirrors 220 are perpendicular to each other, one galvanometer motor 250 is connected to one second reflecting mirror 220 respectively, and the two galvanometer motors 250 are fixed on the side walls of the shell 210 respectively, the driving shaft of the galvanometer motor 250 is connected to the second reflecting mirror 220, the second reflecting mirror 220 is controlled to rotate, so as to control the angle of the second reflecting mirror 220, thereby realizing the rapid and accurate movement of the focused light beam, and forming the required carving pattern.

[0047] Reference Figure 3 and Figure 4 In an embodiment, the galvanometer driving board 240 is connected with a first connecting piece 400, the first connecting piece 400 is further connected with the main body 110, the first connecting piece 400 is sleeved with a first spacing piece 410, and the first spacing piece 410 is arranged between the galvanometer driving board 240 and the main body 110, so that the first heat dissipation space 420 is formed between the galvanometer driving board 240 and the main body 110.

[0048] In the embodiment, the first connecting piece 400 is a screw, one end of the screw passes through the galvanometer driving board 240 and the first spacing piece 410 in sequence and is locked on the main body 110, and it can be understood that the main body 110 is provided with a shell made of metal, and the screw is locked and connected with the shell. In this way, one end of the first spacing piece 410 contacts the galvanometer driving board 240, and the other end contacts the main body 110, so as to space the galvanometer driving board 240 and the main body 110 by a certain space, the first heat dissipation space 420 is formed between the galvanometer driving board 240 and the main body 110, the risk of short circuit caused by the contact between the electronic components on the galvanometer driving board 240 and the shell is avoided, and the heat dissipation effect of the main body 110 is also ensured.

[0049] In an embodiment, the main control board 300 is connected with a second connecting piece, the second connecting piece is further connected with the main body 110, the second connecting piece is sleeved with a second spacing piece 430, and the second spacing piece 430 is arranged between the main control board 300 and the main body 110, so that the second heat dissipation space 440 is formed between the main control board 300 and the main body 110.

[0050] In the embodiment, the second connecting member (not shown in the figure) is a screw, one end of the screw passes through the main control board 300 and the second spacer 430 in sequence, and is locked on the main body 110. It should be noted that the main control board 300 and the galvanometer drive board 240 are located on different sides of the main body 110 to avoid interference with each other. One end of the first spacer 410 is in contact with the main control board 300, and the other end is in contact with the main body 110 to form a certain space between the main control board 300 and the main body 110, thereby forming a second heat dissipation space 440 between the main control board 300 and the main body 110, avoiding the risk of short circuit of the electronic components on the main control board 300 in contact with the shell, and also ensuring the heat dissipation effect of the main body 110.

[0051] Reference Figure 5 and Figure 6 In an embodiment, the laser head device of the engraving machine further comprises a heat dissipation assembly 500, the heat dissipation assembly 500 comprises a heat dissipation fin 510, the laser emitting component comprises a heating surface, and the heat dissipation fin 510 is arranged in the interior of the main body 110 and is in close contact with the heating surface. The heat dissipation fin 510 is used for heat exchange with the heating surface.

[0052] It should be noted that a large amount of heat is generated in the process of generating laser by the laser emitting component, and the heat is concentrated on the heating surface. The heat dissipation fin 510 of the heat dissipation assembly 500 is in contact with the heating surface and exchanges heat with the heating surface to reduce the temperature of the heating surface, thereby achieving heat dissipation of the laser module 100.

[0053] Further, one end of the main body 110 is provided with an air outlet 530, and the heat dissipation assembly 500 further comprises a heat dissipation fan 520. The heat dissipation fan 520 is arranged at one end of the main body 110 away from the air outlet 530. The heat dissipation fan 520 blows air towards the heat dissipation fin 510 to generate a heat dissipation airflow. The heat dissipation airflow passes through the heat dissipation fin 510 and is discharged from the air outlet 530.

[0054] In order to improve the heat dissipation effect, in the embodiment, the heat dissipation fan 520 is also installed at one end of the main body 110. The heat dissipation fan 520 generates a heat dissipation airflow to improve the heat exchange efficiency of the heat dissipation fin 510, thereby improving the heat dissipation efficiency of the heating surface. Specifically, the heat dissipation fan 520 is installed at the top of the main body 110. The bottom of the main body 110 is provided with an air outlet 530. The heat dissipation fan 520 blows air into the interior of the main body 110 to form a heat dissipation airflow. The heat dissipation airflow passes through the heat dissipation fin 510 and is discharged from the air outlet 530 at the bottom. In this way, the heat dissipation fan 520 is opposite to the air outlet 530, which facilitates the outflow of the heat dissipation airflow and improves the heat dissipation effect. It can be understood that the base 600 is provided with a heat dissipation opening (not shown in the figure). The heat dissipation opening corresponds to the air outlet 530. The heat dissipation airflow is discharged through the heat dissipation opening.

[0055] In an embodiment, the laser module 100 further comprises a thermistor for sensing the temperature of the laser emitter, and the thermistor is electrically connected to the main control board 300.

[0056] Reference Figure 7 As shown in the drawings, in an embodiment, the laser head device of the engraving machine further comprises a housing and a base 600, the housing is provided with a cavity, the laser module 100 and the galvanometer assembly 200 are arranged in the cavity, and the base 600 is arranged at one end of the housing and is provided with a laser port in communication with the cavity, the laser port is arranged opposite to the exit port 230, and the focused light beam is emitted from the laser port to the base 600.

[0057] In the specific implementation process, the housing surrounds the cavity and is used for accommodating the laser module 100 and the galvanometer assembly 200, the laser port of the base 600 corresponds to the exit port 230, the focused light beam passes through the exit port 230 and is emitted from the laser port to the product to be engraved and processed, and the engraving work is realized.

[0058] Further, the laser head device of the engraving machine further comprises a top cover 700, the top cover 700 is arranged at one end of the housing away from the base 600, the top cover 700 is provided with a button 710, a display screen 720 and a power control board 730, and the button 710 and the display screen 720 are electrically connected to the power control board 730.

[0059] In the embodiment, the top cover 700 is installed at the top of the housing, the button 710 plays a role of a control switch, the display screen 720 is used for displaying the real-time state and control program of the laser module, and the power control board 730 adopts a PCB board and is installed on the top cover 700.

[0060] The above description is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the utility model and according to the contents of the utility model specification and drawings is included in the patent protection range of the utility model.

Claims

1. An engraver laser head device, characterized by, The laser module comprises a main body, a first reflecting mirror and a front focusing lens, the main body is internally provided with a laser emitter, the main body is provided with a light outlet on one side, the laser emitter emits a laser beam in a vertical direction and the laser beam is incident on the first reflecting mirror, the first reflecting mirror reflects the laser beam by 90 degrees and the laser beam is emitted through the light outlet, and the front focusing lens is arranged at the light outlet and is used for focusing the laser beam to form a focused beam. The galvanometer assembly comprises a housing and a second reflecting mirror, the housing is provided with a reflecting cavity and an outlet communicated with the reflecting cavity, and the second reflecting mirror is arranged in the reflecting cavity and reflects the focused beam to be emitted through the outlet. The laser head of the engraving machine further comprises a main control board, the main control board is arranged on one side of the laser module and is electrically connected with the laser module. The galvanometer assembly further comprises a galvanometer drive board and a galvanometer motor, the galvanometer drive board is arranged on one side of the main body and is electrically connected with the main control board, the galvanometer motor is electrically connected with the galvanometer drive board, the galvanometer motor is further connected with the second reflecting mirror and drives the second reflecting mirror to rotate.

2. The engraver laser head apparatus of claim 1, wherein, The galvanometer drive board is connected with a first connecting piece, the first connecting piece is further connected with the main body, the first connecting piece is sleeved with a first spacing piece, and the first spacing piece is arranged between the galvanometer drive board and the main body to form a first heat dissipation space between the galvanometer drive board and the main body.

3. The engraver laser head apparatus of claim 2, wherein, The main control board is connected with a second connecting piece, the second connecting piece is further connected with the main body, the second connecting piece is sleeved with a second spacing piece, and the second spacing piece is arranged between the main control board and the main body to form a second heat dissipation space between the main control board and the main body.

4. The engraver laser head assembly of claim 3, wherein, The laser head device of the engraving machine further comprises a heat dissipation assembly, the heat dissipation assembly comprises a heat dissipation fin, the laser emitter comprises a heating surface, the heat dissipation fin is arranged in the interior of the main body and is tightly attached to the heating surface, and the heat dissipation fin is used for heat exchange with the heating surface.

5. The engraver laser head assembly of claim 2 wherein, One end of the main body is provided with an air outlet, the heat dissipation assembly further comprises a heat dissipation fan, the heat dissipation fan is arranged at the end of the main body away from the air outlet, the heat dissipation fan blows air towards the heat dissipation fin to generate a heat dissipation air flow, and the heat dissipation air flow passes through the heat dissipation fin and is discharged from the air outlet.

6. The engraver laser head assembly of claim 1, wherein, The laser module further comprises a thermistor, the thermistor is used for sensing the temperature of the laser emitter, and the thermistor is electrically connected with the main control board.

7. The engraver laser head assembly of claim 6, wherein, The laser head device of the engraving machine further comprises a housing and a base, the housing is provided with a containing cavity, the laser module and the galvanometer assembly are arranged in the containing cavity, the base is arranged at one end of the housing and is provided with a laser port communicated with the containing cavity, the laser port is arranged opposite to the outlet, and the focused beam is emitted from the base through the laser port.

8. The engraver laser head assembly of claim 2, wherein, The laser head device of the engraving machine further comprises a top cover, the top cover is arranged at the end of the housing away from the base, the top cover is provided with a key, a display screen and a power control board, and the key and the display screen are electrically connected with the power control board.

9. The engraver laser head apparatus of claim 1, wherein, ​ 10. The engraver laser head assembly of claim 9, wherein, ​

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