Laser engraving device and laser engraving machine

Abstract

The utility model relates to the technical field of laser engraving machines, in particular to a laser engraving device and a laser engraving machine. The laser engraving device main body comprises a shell 1, a cooling pipeline 3 and a pipe core 5, the shell 1 is a cover body made of a metal plate or a composite material, and a rigid supporting piece 6 for supporting parts is arranged in the shell 1. The cooling pipeline is embedded in the pipe core, the refrigerant is injected into the cooling pipeline, the heat conduction efficiency is improved through the refrigerant, meanwhile, heat guided out by the pipe core is transferred into the atmosphere through the laser engraving machine, the actual temperature of the circulating pipeline is monitored through the temperature and pressure monitor, and the heat conduction efficiency is improved. Therefore, the laser engraving device is always in a low-temperature state, long-service-life operation of the device is effectively guaranteed, the laser device can output large power outwards, and the machining efficiency of the device is indirectly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser engraving machines, in particular to a laser engraving device and a laser engraving machine. Background Art

[0002] Traditional laser engraving modules mostly use a method of attaching a heat sink to the outer surface of the engraving module core to transfer the heat generated by the LD chip to the heat sink, and install a fan on the heat sink to transfer the heat generated by the module to the air through heat exchange between the heat sink and a large amount of air. However, as the power of the laser engraving module continues to increase, the heat generated also increases, while the corresponding convection heat exchange coefficient between the metal surface and the air is difficult to continuously improve, and the effect of heat dissipation relying solely on air cooling is not ideal.

[0003] In summary, the existing laser engraving module uses an air-cooled heat sink to dissipate heat, which is greatly limited by the module volume and the convection heat exchange coefficient between the heat dissipation material and the air, and cannot meet the increasing heat dissipation requirements of the laser engraving module. Therefore, the utility model proposes a laser engraving device with liquid cooling function to solve the heat dissipation problem of the module. Utility Model Content

[0004] To this end, the utility model provides a laser engraving device and a laser engraving machine to solve the problem of poor heat dissipation effect caused by insufficient heat exchange coefficient between the heat dissipation material and the air in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] According to the first aspect of the utility model.

[0007] The utility model discloses a laser engraving device, which is internally connected with a hydraulic pump and comprises:

[0008] The housing has a rigid support member disposed on the inner wall, a main drive board is disposed on the top of the rigid support member, and the main drive board is externally connected to a power supply;

[0009] A cooling pipeline is disposed in the housing and a high-speed fluid is input into the cooling pipeline through a hydraulic pump;

[0010] A tube core, wherein a cooling pipeline is buried inside, laser diodes are symmetrically arranged on both sides of the tube core, and the cooling pipeline is adjacent to the laser diode and is suitable for transferring heat generated by the laser diode;

[0011] The photons released by the laser diode run along the axis of the tube core to form a laser beam.

[0012] Further, the cooling pipeline includes a cooling channel, an input pipe and an output pipe, a pair of cooling channels are arranged in parallel in the tube core, and the input pipe is connected to the output pipe through the pair of cooling channels;

[0013] The input pipe and the output pipe are both two-branch pipes, and are both connected to the hydraulic pump.

[0014] Furthermore, the tube core includes:

[0015] The core body has a beam shaping cavity disposed inside, two groups of laser diodes arranged in an array are symmetrically disposed on both sides of the beam shaping cavity, and the two groups of laser diodes are respectively provided with shaping lenses and reflecting mirrors;

[0016] An emission position, in which laser diodes arranged in an array are arranged, the emission position is arranged on the left and right sides of the beam shaping cavity, and sealing plates are arranged on the front and rear sides of the beam shaping cavity;

[0017] Wherein, the cooling channel is arranged at the periphery of the emission position and located inside the core.

[0018] According to the second aspect of the utility model.

[0019] The technical solution discloses a laser engraving machine, including the laser engraving device as proposed above, including:

[0020] A circulation pipeline, the input end and the output end of which are both connected to the tube core, and a water storage tank and a hydraulic pump are arranged on the circulation pipeline, the hydraulic pump is driven by a servo motor, and the servo motor is connected to the water cooling control board signal;

[0021] A refrigeration device is arranged on the circulation pipeline and located between the tube core and the water storage tank;

[0022] A temperature and pressure monitor is installed on the circulation pipeline and is connected to the water cooling control panel signal;

[0023] An air pump, an external adapter, the air pump is connected to the tube core through the adapter;

[0024] The circulation pipeline is filled with refrigerant, and both ends of the circulation pipeline are connected to adapters, and the refrigerant is sent into the tube core through the adapter to absorb heat, and the temperature and pressure monitor is used to monitor the pressure and temperature of the refrigerant in the circulation pipeline.

[0025] Furthermore, the refrigeration equipment comprises:

[0026] A heat conductor is arranged in series on the circulation pipeline, and a semiconductor cooling sheet is fixedly connected to the outside of the heat conductor;

[0027] The heat dissipation fins are fixedly arranged on the semiconductor refrigeration sheet, and the semiconductor refrigeration sheet is connected to the water cooling control board circuit.

[0028] Further, the temperature and pressure monitor includes a hydraulic sensor, a first temperature sensor, a second temperature sensor and a third temperature sensor, and the hydraulic sensor, the first temperature sensor and the second temperature sensor are all connected in series to the circulation pipeline;

[0029] The hydraulic pressure sensor is located between the refrigeration equipment and the water storage tank;

[0030] The first temperature sensor is arranged on the water storage tank;

[0031] The second temperature sensor is arranged between the refrigeration device and the tube core;

[0032] The third temperature sensor is disposed on the tube die;

[0033] Wherein, the hydraulic pressure sensor, the first temperature sensor, the second temperature sensor and the third temperature sensor are all connected to the water cooling control board signal.

[0034] Furthermore, a cooling fan is installed on the cooling fins.

[0035] Furthermore, the interior of the heat conductor is a porous hollow structure, and the refrigerant in the circulation pipeline passes through the heat conductor.

[0036] Furthermore, when the temperature detected by any one of the first temperature sensor, the second temperature sensor and the third temperature sensor is greater than a set value, the semiconductor refrigeration plate is in a working state;

[0037] When the detected temperatures of the first temperature sensor, the second temperature sensor and the third temperature sensor are all lower than the set lower limit, the semiconductor refrigeration chip stops working;

[0038] The hydraulic pump starts working immediately when the device is turned on, and after the device is shut down, the circulating pump stops working after a delay of 60S.

[0039] The utility model has the following advantages:

[0040] The utility model buries a cooling pipeline inside the tube core and injects a refrigerant into the cooling pipeline to improve the efficiency of heat conduction by using the refrigerant. At the same time, the heat derived from the tube core is transferred to the atmosphere by a laser engraving machine. At the same time, a temperature and pressure monitor is used to monitor the actual temperature of the circulation pipeline, so that the laser engraving device is always in a relatively low temperature state, effectively ensuring the long life of the equipment and enabling the laser to output high power to the outside, thereby indirectly improving the processing efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0042] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0043] Figure 1 A three-dimensional diagram of the laser engraving device and the laser engraving machine provided by the utility model;

[0044] Figure 2 A three-dimensional diagram of the laser engraving device provided by the utility model;

[0045] Figure 3 A three-dimensional diagram of the cooling pipeline provided by the utility model;

[0046] Figure 4 A three-dimensional diagram of the tube core provided by the utility model;

[0047] Figure 5 A three-dimensional diagram of the laser engraving machine provided by the utility model;

[0048] Figure 6 This is a schematic diagram of the structure of the laser engraving machine provided by the utility model;

[0049] Figure 7 This is a connection diagram of the laser engraving machine provided by the utility model;

[0050] Figure 8 A three-dimensional diagram of the adapter provided by the utility model;

[0051] Fig. 9 This is a schematic diagram of the internal structure of the adapter provided by the utility model.

[0052] In the figure: 1 housing; 2 main drive board; 3 cooling pipeline; 31 cooling channel; 32 input tube; 33 output tube; 4 laser diode; 5 tube core; 51 core body; 52 beam shaping cavity; 53 industrial lens; 54 sealing plate; 55 emission position; 6 rigid support member;

[0053] 01 circulation pipeline; 02 water cooling control board; 03 refrigeration equipment; 031 heat conductor; 032 heat sink fin; 033 semiconductor refrigeration plate; 04 temperature and pressure monitor; 041 hydraulic sensor; 042 first temperature sensor; 043 second temperature sensor; 044 third temperature sensor; 05 circulation pump; 06 water tank; 07 compression pump; 08 adapter; 081 cavity; 082 blowpipe; 083 plug; 084 interface. DETAILED DESCRIPTION

[0054] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Please refer to Figure 1-Figure 4 The utility model discloses a laser engraving device, which is internally connected to a pump, wherein the pump is a hydraulic pump or a compression pump for causing a fluid to flow at a high speed. Note that the fluid mentioned here includes liquid and gas. The technical solution is now described in the form of a specific embodiment.

[0056] like Figure 2 The main body of the laser engraving device includes a housing 1, a cooling pipeline 3 and a tube core 5, wherein the housing 1 is a cover made of sheet metal or composite material, and a rigid support member 6 for supporting parts is arranged inside the housing 1, wherein the rigid support member 6 has a certain rigidity, and its force-induced variation is very small, and has good stability. Since the main drive board 2 and the tube core 5 are both installed on the rigid support member 6, it helps to reduce the vibration generated by the laser engraving device. In this embodiment, the main drive board 2 is externally connected to the power supply, and the main drive board 2 is connected to the laser diode 4 circuit installed on the tube core 5. The main drive board 2 in this embodiment adopts an MCU micro control unit for controlling the output power of the laser.

[0057] In this embodiment, the laser diode 4 releases photons to run along the axis of the tube core 5 to form a laser beam, and the laser diodes 4 are arranged in pairs on the outer wall of the tube core 5. The tube core 5 is located in the housing 1, and a cooling pipeline 3 is arranged on the tube core 5. Since the cooling pipeline 3 is externally connected to a hydraulic pump or a compression pump, a high-speed moving fluid can be input into the cooling pipeline 3. Specifically, a cooling pipeline 3 is buried inside the tube core 5, and the cooling pipeline 3 is adjacent to the laser diode 4, so that the heat generated by the laser diode 4 can be transferred by a high-speed flowing fluid. In this embodiment, the laser diode 4 is an array-arranged laser chip.

[0058] In a specific embodiment disclosed in the present utility model, Figure 3 The cooling pipeline 3 includes a cooling channel 31, an input pipe 32 and an output pipe 33. A pair of cooling channels 31 are arranged in parallel in the tube core 5. The input pipe 32 is connected to the output pipe 33 through the pair of cooling channels 31. The input pipe 32 and the output pipe 33 are both two-branch pipes and are connected to the pump. In this embodiment, the pump forms a loop with the cooling channel 31 through the input pipe 32 and the output pipe 33. In addition, on this basis, compressed air can also be injected into the cooling pipeline 3 through the pump, so that the tube core 5 maintains a low temperature state to achieve the purpose of heat dissipation.

[0059] In a specific embodiment disclosed in the present utility model, Figure 4 The tube core 5 includes a core body 51, an industrial lens 53 and an emission position 55, wherein a beam shaping cavity 52 is arranged inside the core body 51, and two groups of array-arranged laser diodes 4 are symmetrically arranged on both sides of the beam shaping cavity 52 arranged in the tube core 5, and any group of the laser diodes 4 is correspondingly provided with a staggered arrangement of shaping lenses and reflectors, thereby converging multiple light beams into one, while improving the laser output power, the monochromaticity and linearity of the laser are improved.

[0060] In addition, an emission position 55 is arranged on the left and right sides of the beam shaping cavity 52, and the cooling channel 31 is arranged outside the emission position 55 and located in the core 51. A laser diode 4 is arranged inside the emission position 55, and the laser light released by the laser diode 4 is gathered together in the beam shaping cavity 52. ​​Sealing plates 54 are arranged on the left and right sides of the beam shaping cavity 52 to prevent contamination of the shaping lens and the reflector. An industrial lens 53 is arranged at the bottom of the core 51 for checking the welding effect of the parent material.

[0061] Based on the same inventive concept, the laser engraving machine disclosed in the utility model is connected with the laser engraving device proposed above, referring to Figure 5-Figure 7, structurally, it includes a circulation pipeline 01, a refrigeration device 03 and a temperature and pressure monitor 04, wherein the input end and the output end of the circulation pipeline 01 are both connected to the tube core 5, and a water storage tank 06 and a circulation pump 05 are arranged on the circulation pipeline 01, and the circulation pump 05 inputs the refrigerant in the water storage tank 06 into the tube core 5, thereby transferring the heat generated by the tube core 5. On the other hand, a refrigeration device 03 is arranged on the circulation pipeline 01, and the refrigeration device 03 is located between the tube core 5 and the water storage tank 06, thereby transferring the heat generated by the laser diode to the atmosphere through the refrigeration device 03. In this embodiment, the circulation pump 05 is driven by a servo motor, and the servo motor is connected to the water cooling control board 02 by signal, so that the output power of the circulation pump 05 is regulated by the water cooling control board 02. The water cooling control board 02 is connected to the temperature and pressure monitor 04 installed on the circulation pipeline 01 by signal, wherein the circulation pipeline 01 is filled with refrigerant, and the temperature and pressure monitor 04 is used to monitor the pressure and temperature of the refrigerant in the circulation pipeline 01.

[0062] In some embodiments, Figure 7 Both ends of the circulation pipeline 01 are connected to the adapter 08, the adapter 08 is connected to the air pump 07, and the air pump 07 can be connected to the tube core 5 through the adapter 08, so that the compressed air flow is input into the tube core 5, and then the compressed air flow is released from the tube core 5. On the other hand, the circulation pipeline 01 can also send the refrigerant into the tube core 5 through the adapter 08, so that the refrigerant circulates in the tube core 5, thereby fully absorbing heat, and the temperature and pressure monitor 04 is used to monitor the pressure and temperature of the refrigerant in the circulation pipeline 01.

[0063] Specifically, Figure 8 and Fig. 9 , the adapter 08 includes a cavity 081, a blow pipe 082, a plug 083 and an interface 084. The two sides of the cavity 081 are connected to the circulation pipeline 01 through two interfaces 084. At the same time, the blow pipe 082 is vertically arranged on the top of the cavity 081 and divides the cavity 081 into two. Plugs 083 are arranged on both sides of the cavity 081. The two interfaces 084 are respectively connected to the plug 083, and the plug 083 sends the refrigerant into the tube core 5 for circulating heat absorption. It should be explained in detail that the blow pipe 082 and the cavity 081 are not connected to each other in structure, that is, the compressed airflow released by the blow pipe 082 is always separated from the refrigerant circulating in the tube core 5 during the process of entering the tube core 5, and the compressed airflow released by the blow pipe 082 is finally released outward from the tube core 5, so as to clean up the waste chips formed by carving on the workbench.

[0064] In this embodiment, if Figure 5 and Figure 6, the refrigeration device 03 includes a heat conductor 031 and a heat sink fin 032, wherein the heat conductor 031 has a porous hollow structure inside and is arranged in series on the circulation pipe 01, and a semiconductor cooling sheet 033 is attached to the outside of the heat conductor 031, thereby transferring heat by supplying power to the semiconductor cooling sheet 033 and utilizing the thermoelectric effect generated by the semiconductor cooling sheet 033. At the same time, the heat sink fin 032 is arranged on the semiconductor cooling sheet 033, and the heat sink fin 032 can fully expand the contact area with the air, thereby improving the efficiency of heat transfer to the air in an air-cooling manner.

[0065] On this basis, further, a cooling fan may be installed on the cooling fins 032 to improve the cooling effect through the airflow generated by the cooling fan.

[0066] In this embodiment, the temperature and pressure monitor 04 includes a hydraulic sensor 041, a first temperature sensor 042, a second temperature sensor 043 and a third temperature sensor 044, wherein the hydraulic sensor 041, the first temperature sensor 042 and the second temperature sensor 043 are all connected in series to the circulation pipeline 01, and the hydraulic sensor 041 is located between the refrigeration equipment 03 and the water storage tank 06;

[0067] The first temperature sensor 042 is disposed on the water storage tank 06;

[0068] The second temperature sensor 043 is arranged between the refrigeration device 03 and the tube core 5;

[0069] The third temperature sensor 044 is arranged on the tube core 5;

[0070] Among them, Figure 7 The semiconductor refrigeration plate 033 is connected to the water cooling control board 02 circuit, and the hydraulic sensor 041, the first temperature sensor 042, the second temperature sensor 043 and the third temperature sensor 044 are also connected to the water cooling control board 02 signal, so that the equipment can be controlled by the water cooling control board 02 to make it run automatically.

[0071] In this embodiment, the first temperature sensor 042, the second temperature sensor 043 and the third temperature sensor 044 are all commercially available products for temperature monitoring, such as an axial thermistor NTC glass-sealed temperature sensor with a B value of 3950 10K; at the same time, in the embodiment of the present application, the hydraulic sensor 041 can also include a water flow sensor and a water pressure sensor, both of which are commercially available products, such as a water flow sensor using a YF-S401 water flow sensor, and a water pressure sensor using a RC1104 pressure-sensitive and force-sensitive sensor.

[0072] The specific control methods are as follows:

[0073] When the temperature detected by any one of the first temperature sensor 042, the second temperature sensor 043 and the third temperature sensor 044 is greater than the set value, the semiconductor cooling sheet 033 is in working state;

[0074] When the detected temperatures of the first temperature sensor 042, the second temperature sensor 043 and the third temperature sensor 044 are all lower than the set lower limit, the semiconductor cooling sheet 033 stops working;

[0075] Circulation pump 05 starts working immediately when the device is turned on. After the device is shut down, circulation pump 05 stops working after a delay of 60S.

[0076] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A laser engraving device, internally connected to a hydraulic pump, characterized in that: include: A housing (1) has an inner wall provided with a rigid support member (6), a main drive board (2) is provided on the top of the rigid support member (6), and the main drive board (2) is externally connected to a power source; A cooling pipeline (3) is arranged in the housing (1), and a high-speed fluid is input into the cooling pipeline (3) through a hydraulic pump; A tube core (5) having a cooling pipeline (3) buried therein, laser diodes (4) being symmetrically arranged on both sides of the tube core (5), the cooling pipeline (3) being adjacent to the laser diode (4) and being suitable for transferring heat generated by the laser diode (4); The photons released by the laser diode (4) travel along the axis of the tube core (5) to form a laser beam.

2. The laser engraving device according to claim 1, characterized in that: The cooling pipeline (3) comprises a cooling channel (31), an input pipe (32) and an output pipe (33); a pair of cooling channels (31) are arranged in parallel in the tube core (5); and the input pipe (32) is connected to the output pipe (33) through the pair of cooling channels (31); The input pipe (32) and the output pipe (33) are both bifurcated pipes and are both connected to the hydraulic pump.

3. The laser engraving device according to claim 2, characterized in that: The tube core (5) comprises: A core (51) is provided with a beam shaping cavity (52) inside, two groups of laser diodes (4) arranged in an array are symmetrically provided on both sides of the beam shaping cavity (52), and shaping lenses and reflecting mirrors are respectively provided in front of the two groups of laser diodes (4); An emission position (55) having laser diodes (4) arranged in an array, the emission position (55) being arranged on the left and right sides of the beam shaping cavity (52), and sealing plates (54) being arranged on the front and rear sides of the beam shaping cavity (52); Wherein, the cooling channel (31) is arranged at the periphery of the emission position (55) and is located inside the core (51).

4. A laser engraving machine, comprising the laser engraving device according to claim 3, characterized in that: Also includes: A circulation pipeline (01), the input end and the output end of which are both connected to the tube core (5), and the circulation pipeline (01) is provided with a water storage tank (06) and a circulation pump (05), the circulation pump (05) being driven by a servo motor, and the servo motor being signal-connected to the water-cooling control panel (02); A refrigeration device (03) is arranged on the circulation pipeline (01) and is located between the tube core (5) and the water storage tank (06); A temperature and pressure monitor (04) is installed on the circulation pipeline (01) and is signal-connected to the water-cooling control panel (02); An air pump (07) and an external adapter (08), wherein the air pump (07) is connected to the tube core (5) via the adapter (08); The circulation pipe (01) is filled with refrigerant, and both ends of the circulation pipe (01) are connected to adapters (08), and the refrigerant is sent into the tube core (5) through the adapter (08) to absorb heat, and the temperature and pressure monitor (04) is used to monitor the pressure and temperature of the refrigerant in the circulation pipe (01).

5. The laser engraving machine as claimed in claim 4, characterized in that: The refrigeration equipment (03) comprises: A heat conductor (031) is arranged in series on the circulation pipeline (01), and a semiconductor cooling sheet (033) is fixedly connected to the outside of the heat conductor (031); The heat dissipation fins (032) are fixedly arranged on the semiconductor cooling sheet (033), and the semiconductor cooling sheet (033) is connected to the water cooling control board (02) circuit.

6. The laser engraving machine as claimed in claim 5, characterized in that: The temperature and pressure monitor (04) comprises a hydraulic sensor (041), a first temperature sensor (042), a second temperature sensor (043) and a third temperature sensor (044); the hydraulic sensor (041), the first temperature sensor (042) and the second temperature sensor (043) are all connected in series to the circulation pipeline (01); The hydraulic pressure sensor (041) is located between the refrigeration equipment (03) and the water storage tank (06); The first temperature sensor (042) is arranged on the water storage tank (06); The second temperature sensor (043) is arranged between the refrigeration device (03) and the tube core (5); The third temperature sensor (044) is arranged on the tube core (5); The hydraulic pressure sensor (041), the first temperature sensor (042), the second temperature sensor (043) and the third temperature sensor (044) are all signal-connected to the water-cooling control panel (02).

7. The laser engraving machine as claimed in claim 5, characterized in that: A cooling fan is installed on the cooling fins (032).

8. The laser engraving machine as claimed in claim 5, characterized in that: The interior of the heat conductor (031) is a porous hollow structure, and the refrigerant in the circulation pipeline (01) passes through the heat conductor (031).

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