A wavelength-locked fiber laser module VBG recovery device and recovery method

Abstract

The present invention provides a wavelength-locked fiber laser module VBG recovery device and recovery method, which belongs to the field of semiconductor laser packaging, and includes a fixed bracket, a Y-axis motor, a Y-axis screw, a mobile bracket, an X-axis motor, an X-axis screw, an X-axis slide, a temperature control system, a storage tray, a recovery mechanism and a Z-axis fixed bracket. The rotation of the Y-axis motor drives the mobile bracket to move forward and backward in the Y-axis direction, and the rotation of the X-axis motor drives the X-axis slide to move along the X-axis direction; the X-axis slide is provided with a temperature control system, the temperature control system is used to heat the laser module, and a storage tray is set on the other side of the upper end of the temperature control system; driven by the Z-axis motor, the Z-axis slide can move up and down along the Z-axis direction, and a recovery mechanism is set on one side of the Z-axis slide for grabbing the VBG combination block to be recovered and placing it in the storage tray. The device of the present invention is simple, easy to operate, high in production efficiency, high in recovery rate, and stable in performance.

Description

Technical Field

[0001] The invention relates to a wavelength-locked fiber laser module VBG recovery device and a recovery method, belonging to the technical field of semiconductor laser packaging. Background Art

[0002] Semiconductor lasers are widely used in the fields of medical treatment, display, pumping, industrial processing, etc. due to their advantages of small size, light weight, high conversion efficiency, and long service life. In recent years, with the rapid development of semiconductor material epitaxial growth technology, semiconductor laser waveguide structure optimization technology, cavity surface passivation technology, high-stability packaging technology, and efficient heat dissipation technology, especially driven by the direct semiconductor laser industrial processing application and high-power fiber laser pumping needs, semiconductor lasers with high power and high beam quality have developed rapidly, providing a light source foundation for obtaining high-quality, high-performance direct semiconductor laser processing equipment and high-performance high-power fiber laser pumping sources.

[0003] In order to reduce the impact of thermally induced drift of the wavelength of the pump source of solid-state lasers and fiber lasers, the current medium and high power wavelength-locked semiconductor lasers mainly use external cavity optical feedback technology, and most of them use volume Bragg grating (VBG) to achieve wavelength locking of semiconductor chips and produce semiconductor laser modules with VBG locked wavelength. Due to the complex manufacturing process of VBG, its price is also extremely high. Each laser module needs to use multiple VBGs for wavelength locking. Since the VBG wave locking range is relatively narrow, the VBG adjustment position requires high precision. During the VBG wave locking production of laser modules, VBG wave locking failure often occurs. It is necessary to remove the VBG and replace it with a new VBG to lock the wave again. The commonly used method is to use a sharp tool to pry the VBG directly off the heat sink. Since the material of VBG is silicate glass (Na 2 OZnO-Al 2 O 3 -SiO 2 ) is relatively brittle, and the VBG after removal is basically damaged and cannot be reused. The recovery rate of VBG is less than 20%, which is bound to cause a waste of production costs. At the same time, manual VBG recovery is labor-intensive and long-term operation is relatively labor-intensive. During manual operation, it is very easy to cause contamination and scratches on the coating layer at the front and back ends of the VBG, thereby reducing the optical performance of the VBG. If the VBG can be efficiently recycled and reused, the production cost can be greatly reduced. Since there are currently no special tools and methods for VBG recovery, how to achieve efficient VBG recovery has become a problem that needs to be solved urgently. Therefore, a VBG recovery device and recovery method for a wavelength-locked fiber laser module with simple structure, convenient operation, high production efficiency, high recovery rate, stable performance, is needed to solve the problems currently existing in VBG recovery. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a wavelength-locked fiber laser module VBG recovery device, which is simple, easy to operate, high in production efficiency, high in recovery rate, and stable in performance.

[0005] The present invention also provides a method for recovering VBG of the above-mentioned wavelength-locked laser module VBG recovery device.

[0006] The present invention adopts the following technical solution:

[0007] A wavelength-locked fiber laser module VBG recovery device comprises a fixed bracket, a Y-axis motor, a Y-axis lead screw, a movable bracket, an X-axis motor, an X-axis lead screw, an X-axis slide, a temperature control system, a storage tray, a recovery mechanism and a Z-axis fixed bracket, wherein the fixed bracket is arranged at the lowest end, a Y-axis motor is arranged at the upper end of the fixed bracket, a Y-axis lead screw is arranged at one end of the Y-axis motor, a movable bracket is arranged at the upper end of the Y-axis lead screw, and the movable bracket can be moved forward and backward in the Y-axis direction by the rotation of the Y-axis motor; an X-axis motor is arranged at the upper part of the movable bracket, an X-axis lead screw is arranged at one side of the X-axis motor, an X-axis slide is arranged at the upper end of the X-axis lead screw, and the X-axis slide can be moved along the X-axis direction by the rotation of the X-axis motor;

[0008] The X-axis slide is provided with a temperature control system. A laser module is provided on one side of the upper end of the temperature control system. The temperature control system is used to heat the laser module. A storage tray is provided on the other side of the upper end of the temperature control system to hold the recycled VBG assembly blocks.

[0009] The Z-axis fixing frame is located at one end of the fixing bracket, a Z-axis motor is provided on the upper part of the Z-axis fixing frame, a Z-axis screw is provided at the lower end of the Z-axis motor, a Z-axis slide is provided on one side of the Z-axis screw, and driven by the Z-axis motor, the Z-axis slide can move up and down along the Z-axis direction, and a recovery mechanism is provided on one side of the Z-axis slide for grabbing the VBG combination blocks to be recovered and placing them in the storage tray.

[0010] Preferably, the recovery mechanism includes a Z-axis lifting frame, an adjusting motor is provided at the upper end of the Z-axis lifting frame for adjusting the angle of the clamping claw, an upper fixed block and a lower fixed block are provided at the lower end of the adjusting motor, a driving wheel and a driven wheel are provided between the upper fixed block and the lower fixed block, the driving wheel is connected to the adjusting motor through a bearing, a belt is provided on the outer side of the driving wheel and the driven wheel, the driving wheel can be driven to rotate by the rotation of the adjusting motor, and the driven wheel is driven to rotate through the belt when the driving wheel rotates;

[0011] A clamping cylinder is provided on the upper part of one end of the upper fixed block, a clamping slide is provided on the lower end of the clamping cylinder, the upper end of the clamping slide is connected to the driven wheel and the clamping cylinder, a clamping claw is provided on the lower end of the clamping slide, the clamping cylinder, the clamping slide and the clamping claw are integrally moved with the rotation of the driven wheel, and the clamping claw can be opened and closed by starting the clamping cylinder.

[0012] There is a bearing that can be raised and lowered in the middle of the clamping cylinder. The clamping cylinder can control the lifting and lowering of the bearing. The bearing is connected to the spring connecting strip inside the clamping slider, and the spring connecting strip is connected to the clamping claw through a spring. When the clamping cylinder drives the bearing to move upward, the spring of the clamping slider is stretched, so that the two clamping claws move inward to achieve closure. When the clamping cylinder drives the lifting rod to descend, the spring is reset, and the two clamping claws move outward (there is a compression spring between the two clamping claws), and the clamping claws are opened by the tension of the compression spring.

[0013] Preferably, an adjusting wheel is provided on one side of the belt for adjusting the tightness of the belt;

[0014] An adjusting shaft is provided at the upper end of the adjusting wheel, and a connecting piece with a long groove is fixedly provided on the upper fixed block. The adjusting shaft is fixed in the long groove of the connecting piece by screws. The front and rear position of the adjusting wheel can be adjusted by adjusting the position of the fixing screws to prevent the belt from loosening during use.

[0015] Preferably, a heating groove is provided on one side of the upper end of the temperature control system, the length and width of the heating groove are adapted to the length and width of the shell of the laser module, the depth of the heating groove is 10-20 mm, a heating plate is provided at the bottom of the heating groove, the heating groove is heated by the heating plate, and the laser module is placed in the heating groove;

[0016] A touch screen is provided at the front end of the temperature control system for displaying the temperature of the heating tank (a temperature-sensing thermocouple is provided at the bottom of the heating tank, which senses the temperature of the heating tank and transmits the detected temperature data to the temperature control system). The heating program of the temperature control system can be set through the touch screen. A temperature adjustment knob and a temperature control switch are provided on one side of the touch screen. The temperature control adjustment knob is used to manually adjust the heating temperature of the temperature control system, and the temperature control switch is used to control the start and stop of the temperature control system.

[0017] Preferably, a shell is provided outside the laser module, and the shell material is preferably copper. N VBG assembly blocks are provided inside the shell, and N≥2. The VBG assembly block consists of an upper VBG and a lower heat sink block. UV glue is used to bond the VBG and the heat sink block, and the heat sink block and the bottom of the shell;

[0018] The temperature control system is used to heat the shell of the laser module to melt the UV glue at the bottom of the heat sink in the VBG assembly block in the laser module, so as to facilitate the removal of the VBG assembly block from the shell. It is worth noting that the melting of the UV glue at the bottom of the heat sink block does not affect the fixation of other VBG assembly blocks that do not need to be recycled. After the recycling is completed, when the shell temperature drops to a certain value, the melted UV glue solidifies, and the bonding firmness between the VBG assembly block and the shell is not affected.

[0019] Preferably, the storage tray is fixed on the temperature control system through a storage fixing seat, the four corners of the lower end of the storage fixing seat are respectively provided with fixing legs, and the four corners of the upper end of the storage fixing seat are respectively provided with positioning right angles for positioning the storage tray;

[0020] The receiving material tray is provided with M evenly arranged fixing grooves, M≥2, the length and width of the fixing grooves are adapted to the length and width of the heat sink, and the depth of the fixing grooves is less than the height of the heat sink.

[0021] Preferably, a bevel is provided at the upper end of the fixing groove, and the inclination angle of the bevel is 30-60 degrees, so as to facilitate the placement of the VBG assembly block into the fixing groove of the storage tray.

[0022] Preferably, the width of the gripping claw when opened is adapted to the width of the heat sink at the lower end of the VBG assembly block, and the gripping claw preferably grips both ends of the long side of the heat sink. When VBG is recovered, the VBG assembly block is placed from the inside of the laser module into the storage tray by gripping both ends of the heat sink with the gripping claw.

[0023] A recycling method of the above-mentioned wavelength-locked fiber laser module VBG recycling device comprises the following steps:

[0024] (1) Place the laser module to be recycled by VBG into the heating tank at the upper end of the temperature control system;

[0025] (2) Setting the heating program through the touch screen of the temperature control system, the program sets the heating temperature to 150-200 degrees Celsius;

[0026] (3) Turn on the temperature control switch button of the temperature control system. The temperature control system automatically heats the laser module according to the program setting to soften the UV glue at the lower end of the heat sink in the laser module;

[0027] (4) The VBG assembly block is automatically moved to the bottom of the clamping claw by the operation of the X-axis motor and the Y-axis motor, and the Z-axis motor is operated to move the clamping claw downward. The motor operation is adjusted to adjust the angle of the clamping claw through the belt, and the clamping cylinder is operated to clamp the two ends of the heat sink.

[0028] (5) The Z-axis motor drives the gripping claw to lift upward, so that the VBG assembly block is separated from the laser module housing, and then the gripping claw automatically moves the VBG assembly block to the upper end of the storage tray;

[0029] (6) The Z-axis motor drives the gripping claw to move slowly downward, and adjusts the angle of the gripping claw by adjusting the motor (the motor needs to be adjusted appropriately, because the installation angle of the VBG assembly block on the laser module is not completely consistent, so each VBG assembly block makes the gripping claw rotate at a different angle during recycling. When placing the VBG assembly block on the storage tray, the angle of the VBG assembly block needs to be adjusted so that the VBG assembly block can be accurately placed in the fixed groove 34), and the VBG assembly block is placed in the fixed groove of the storage tray;

[0030] (7) Repeat steps (4) to (6) until all VBG assembly blocks in the laser module are recovered. The device automatically resets, and the temperature control system automatically turns off the heating, and the laser module begins to cool down.

[0031] (8) When the temperature of the laser module drops to room temperature, remove the laser module from the temperature control system (when removing, the VBG assembly block that has not been recycled will be stuck to the shell because the UV glue solidifies due to the temperature drop), then place another laser module, and repeat steps (3) to (7) to continue recycling the VBG assembly block;

[0032] (9) After all the fixed slots of the storage tray are filled with VBG assembly blocks, remove the storage tray for cleaning;

[0033] (10) Take out the cleaned storage tray, blow dry the cleaned VBG assembly block with nitrogen, and put the VBG assembly block into the recycling box for use, thus completing the laser module VBG recycling work.

[0034] Preferably, the cleaning process in step (9) is: placing in an ultrasonic cleaning machine tank, adding acetone and performing ultrasonic cleaning for 5-10 minutes.

[0035] Where the present invention is not exhaustive, prior art may be used.

[0036] The beneficial effects of the present invention are:

[0037] 1. The VBG recovery device of the wavelength-locked laser module of the present invention is used for VBG recovery, which is relatively simple to operate, has a high degree of equipment automation, and effectively reduces labor intensity. At the same time, during the VBG recovery process, the recovery mechanism does not directly contact the VBG, and the breakage rate of the VBG after recovery is reduced by more than 50%, and the VBG recovery rate is increased to more than 85%.

[0038] 2. The use of this device for VBG recycling can effectively solve the problem of coating layer contamination and scratches at the front and rear ends of the VBG when the VBG is recycled manually, and the optical performance of the VBG after recycling does not change.

[0039] 3. This device adopts electrical automation design, simple maintenance and long service life. The use of this device for VBG recovery improves the utilization rate of VBG and greatly reduces the production cost of wavelength-locked laser modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The three-dimensional structure diagram of the wavelength-locked fiber laser module VBG recovery device of the present invention is shown in FIG. Figure Ⅰ ;

[0041] Figure 2 The three-dimensional structure diagram of the wavelength-locked fiber laser module VBG recovery device of the present invention is shown in FIG. Figure II ;

[0042] Figure 3 The three-dimensional structure of the recovery mechanism of the present invention is intended;

[0043] Figure 4 It is a schematic diagram of the spatial position relationship between the temperature control system of the present invention, the laser module and the storage tray;

[0044] Figure 5 It is a schematic diagram of the three-dimensional structure of the temperature control system of the present invention;

[0045] Figure 6 It is a schematic diagram of the three-dimensional structure of the storage tray of the present invention;

[0046] Figure 7 It is a schematic diagram of the three-dimensional structure of the storage fixing seat of the present invention;

[0047] Figure 8 It is a schematic diagram of the three-dimensional structure of the laser module of the present invention;

[0048] Fig. 9 It is a schematic diagram of the three-dimensional structure of the VBG assembly block of the present invention;

[0049] In the figure, 1. fixed bracket, 2. Y-axis motor, 3. Y-axis screw, 4. mobile bracket, 5. X-axis motor, 6. X-axis screw, 7. X-axis slide, 8. temperature control system, 9. laser module, 10. storage tray, 11. Z-axis fixed bracket, 12. Z-axis motor, 13. Z-axis screw, 14. Z-axis slide, 15. recovery mechanism, 16. adjustment motor, 17. Z-axis lifting bracket, 18. driving wheel, 19. upper fixed block, 2 0. Lower fixed block, 21. Driven wheel, 22. Belt, 23. Adjusting wheel, 24. Clamping cylinder, 25. Clamping slide, 26. Clamping claw, 27. VBG combination block, 28. Storage fixing seat, 29. Heating slot, 30. Touch screen, 31. Temperature adjustment knob, 32. Temperature control switch, 33. Bevel, 34. Fixed slot, 35. Fixed leg, 36. Positioning right angle, 37. Shell, 38. VBG, 39. Heat sink. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, they will be described in detail with reference to the accompanying drawings and specific embodiments, but are not limited to these. Anything not fully described in the present invention shall be based on conventional techniques in the art.

[0051] Embodiment 1:

[0052] A wavelength-locked fiber laser module VBG recovery device, such as Figure 1-9 As shown, it includes a fixed bracket 1, a Y-axis motor 2, a Y-axis screw 3, a movable bracket 4, an X-axis motor 5, an X-axis screw 6, an X-axis slide 7, a temperature control system 8, a storage tray 10, a recovery mechanism 15 and a Z-axis fixed bracket 11. The fixed bracket 1 is arranged at the lowermost end, the upper end of the fixed bracket 1 is provided with a Y-axis motor 2, one end of the Y-axis motor 2 is provided with a Y-axis screw 3, and the upper end of the Y-axis screw 3 is provided with a movable bracket 4, and the movable bracket 4 can be moved forward and backward in the Y-axis direction by the rotation of the Y-axis motor 2; the upper part of the movable bracket 4 is provided with an X-axis motor 5, one side of the X-axis motor 5 is provided with an X-axis screw 6, and the upper end of the X-axis screw 6 is provided with an X-axis slide 7, and the X-axis slide 7 can be moved along the X-axis direction by the rotation of the X-axis motor 5;

[0053] A temperature control system 8 is provided on the X-axis slide 7. A laser module 9 is provided on one side of the upper end of the temperature control system 8. The temperature control system 8 is used to heat the laser module 9. A receiving tray 10 is provided on the other side of the upper end of the temperature control system 8 for containing the recovered VBG assembly blocks 27.

[0054] The Z-axis fixed frame 11 is located at the upper end of the fixed bracket 1, and a Z-axis motor 12 is provided on the upper part of the Z-axis fixed frame 11. A Z-axis screw 13 is provided at the lower end of the Z-axis motor 12, and a Z-axis slide 14 is provided on one side of the Z-axis screw 13. Driven by the Z-axis motor 12, the Z-axis slide 14 can move up and down along the Z-axis direction. A recovery mechanism 15 is provided on one side of the Z-axis slide 14 for grabbing the VBG combination block 27 to be recovered and placing it in the storage tray.

[0055] Embodiment 2:

[0056] A wavelength-locked fiber laser module VBG recovery device, as described in Example 1, except that Figure 3 As shown, the recovery mechanism 15 includes a Z-axis lifting frame 17, an adjusting motor 16 is arranged at the upper end of the Z-axis lifting frame 17 for adjusting the angle of the gripping claw, an upper fixing block 19 and a lower fixing block 20 are arranged at the lower end of the adjusting motor 16, a driving wheel 18 and a driven wheel 21 are arranged between the upper fixing block 19 and the lower fixing block 20, the driving wheel 18 is connected to the adjusting motor 16 through a bearing, and a belt 22 is arranged on the outer side of the driving wheel 18 and the driven wheel 21, and the driving wheel 18 can be driven to rotate by the rotation of the adjusting motor 16, and the driven wheel 21 is driven to rotate through the belt 22 when the driving wheel 18 rotates;

[0057] A clamping cylinder 24 is provided at the upper part of one end of the upper fixed block 19, and a clamping slider 25 is provided at the lower end of the clamping cylinder 24. The upper end of the clamping slider 25 is connected to the driven wheel 21 and the clamping cylinder 24, and a clamping claw 26 is provided at the lower end of the clamping slider 25. The clamping cylinder, the clamping slider and the clamping claw are integrally moved with the rotation of the driven wheel, and the clamping claw 26 can be opened and closed by starting the clamping cylinder 24.

[0058] There is a bearing that can be raised and lowered in the middle of the clamping cylinder. The clamping cylinder can control the lifting and lowering of the bearing. The bearing is connected to the spring connecting strip inside the clamping slider, and the spring connecting strip is connected to the clamping claw through a spring. When the clamping cylinder drives the bearing to move upward, the spring of the clamping slider is stretched, so that the two clamping claws move inward to achieve closure. When the clamping cylinder drives the lifting rod to descend, the spring is reset, and the two clamping claws move outward (there is a compression spring between the two clamping claws), and the clamping claws are opened by the tension of the compression spring.

[0059] Embodiment 3:

[0060] A wavelength-locked fiber laser module VBG recovery device, as described in Example 2, except that an adjusting wheel 23 is provided on one side of the belt 22 for adjusting the tightness of the belt;

[0061] An adjusting shaft is provided at the upper end of the adjusting wheel 23, and a connecting piece with a long groove is fixedly provided on the upper fixing block 19. The adjusting shaft is fixed in the long groove of the connecting piece by screws. The front and rear positions of the adjusting wheel can be adjusted by adjusting the position of the fixing screws to prevent the belt from loosening during use.

[0062] Embodiment 4:

[0063] A wavelength-locked fiber laser module VBG recovery device, as described in Example 3, except that Figure 4 , 5 As shown, a heating groove 29 is provided on one side of the upper end of the temperature control system 8. The length and width of the heating groove 29 are adapted to the length and width of the shell of the laser module 9. The depth of the heating groove 29 is 10-20 mm. A heating plate is provided at the bottom of the heating groove 29. The heating groove is heated by the heating plate. The laser module is placed in the heating groove.

[0064] A touch screen 30 is provided at the front end of the temperature control system 8 for displaying the temperature of the heating tank (a thermocouple for sensing temperature is provided at the bottom of the heating tank, and the temperature of the heating tank is sensed by the thermocouple, and the thermocouple transmits the detected temperature data to the temperature control system). The heating program of the temperature control system 8 can be set through the touch screen 30. A temperature adjustment knob 31 and a temperature control switch 32 are provided on one side of the touch screen 30. The temperature control adjustment knob 31 is used to manually adjust the heating temperature of the temperature control system, and the temperature control switch 32 is used to control the start and stop of the temperature control system.

[0065] Embodiment 5:

[0066] A wavelength-locked fiber laser module VBG recovery device, as described in Example 4, except that a shell 37 is provided on the outside of the laser module 9, the shell 37 is preferably made of copper, N VBG assembly blocks 27 are provided in the shell, N ≥ 2, the VBG assembly block 27 is composed of an upper VBG 38 and a lower heat sink 39, and UV glue is used to bond the VBG 38 and the heat sink 39, and the heat sink 39 and the bottom of the shell 37;

[0067] The temperature control system 8 is used to heat the shell of the laser module to melt the UV glue at the bottom of the heat sink in the VBG assembly block 27 in the laser module, thereby facilitating the removal of the VBG assembly block from the shell. It is worth noting that the melting of the UV glue at the bottom of the heat sink block does not affect the fixation of other VBG assembly blocks that do not need to be recycled. After the recycling is completed, when the shell temperature drops to a certain value, the melted UV glue solidifies, and the bonding strength between the VBG assembly block and the shell is not affected.

[0068] Embodiment 6:

[0069] A wavelength-locked fiber laser module VBG recovery device, as described in Example 5, except that a storage tray 10 is fixed to a temperature control system 8 via a storage fixing seat 28, and fixing legs 35 are respectively provided at the four corners of the lower end of the storage fixing seat 28, and positioning right angles 36 are respectively provided at the four corners of the upper end of the storage fixing seat 28 for positioning the storage tray 10;

[0070] The storage tray 10 is provided with M evenly arranged fixing grooves 34 , M≥2, the length and width of the fixing grooves 34 are adapted to the length and width of the heat sink 39 , and the depth of the fixing grooves 34 is less than the height of the heat sink 39 .

[0071] Embodiment 7:

[0072] A wavelength-locked fiber laser module VBG recovery device, as described in Example 6, except that a bevel 33 is provided at the upper end of the fixing groove 34, and the inclination angle of the bevel 33 is 30-60 degrees, which is convenient for placing the VBG assembly block into the fixing groove of the storage tray.

[0073] Embodiment 8:

[0074] A wavelength-locked fiber laser module VBG recovery device, as described in Example 7, except that the width of the gripping claw 26 when opened is adapted to the width of the heat sink 39 at the lower end of the VBG assembly block, and the gripping claw preferably grabs the two ends of the long side of the heat sink (such as Fig. 9 When the VBG is recovered, the VBG assembly block is placed from the inside of the laser module into the storage tray by grabbing the two ends of the heat sink block with the gripping claws.

[0075] Embodiment 9:

[0076] A method for recycling a wavelength-locked fiber laser module VBG recycling device comprises the following steps:

[0077] (1) Place the laser module 9 to be subjected to VBG recovery into the heating tank 29 at the upper end of the temperature control system 8;

[0078] (2) Setting the heating program through the touch screen 30 of the temperature control system 8, the program setting heating temperature is 150-200 degrees Celsius;

[0079] (3) Turn on the temperature control switch 32 of the temperature control system, and the temperature control system 8 automatically heats the laser module according to the program setting to soften the UV glue at the lower end of the heat sink in the laser module;

[0080] (4) The VBG assembly block 27 is automatically moved to the position directly below the clamping claw by the operation of the X-axis motor 5 and the Y-axis motor 2, the Z-axis motor 12 is operated to move the clamping claw downward, the adjustment motor 16 is operated to adjust the angle of the clamping claw by the belt 22, and the clamping cylinder 24 is operated to clamp the two ends of the heat sink;

[0081] (5) The Z-axis motor 12 drives the clamping claw to lift upward, so that the VBG assembly block 27 is separated from the laser module housing, and then the clamping claw 26 automatically moves the VBG assembly block 27 to the upper end of the storage tray;

[0082] (6) The Z-axis motor 12 drives the gripping claw to move slowly downward, and adjusts the angle of the gripping claw by adjusting the motor 16 (the adjusting motor needs to properly adjust the gripping claw, because the installation angle of the VBG assembly block in the laser module is not completely consistent, so each VBG assembly block makes the gripping claw rotate at a different angle during recovery. When placing the VBG assembly block on the storage tray, the angle of the VBG assembly block needs to be adjusted so that the VBG assembly block can be accurately placed in the fixing groove 34), and the VBG assembly block is placed in the fixing groove of the storage tray;

[0083] (7) Repeat steps (4) to (6) until all VBG assembly blocks 27 in the laser module 9 are recovered, the device automatically resets, and the heating of the temperature control system is automatically turned off, and the laser module begins to cool down;

[0084] (8) When the temperature of the laser module drops to room temperature, remove the laser module from the temperature control system (when removing, the VBG assembly block that has not been recycled will be stuck to the shell because the UV glue solidifies due to the temperature drop), then place another laser module, and repeat steps (3) to (7) to continue recycling the VBG assembly block;

[0085] (9) After all the fixed slots 34 of the receiving tray 10 are filled with VBG assembly blocks 27, the receiving tray is placed in the tank of the ultrasonic cleaning machine and acetone is added for ultrasonic cleaning for 5-10 minutes;

[0086] (10) Take out the cleaned storage tray 10, blow dry the cleaned VBG assembly block 27 with nitrogen, and then put the VBG assembly block 27 into a recycling box for use, thereby completing the laser module VBG recycling work.

[0087] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A wavelength-locked fiber laser module VBG recovery device, characterized in that: It includes a fixed bracket, a Y-axis motor, a Y-axis screw, a mobile bracket, an X-axis motor, an X-axis screw, an X-axis slide, a temperature control system, a storage tray, a recovery mechanism and a Z-axis fixed bracket. The fixed bracket is arranged at the lowermost end, and a Y-axis motor is arranged at the upper end of the fixed bracket. A Y-axis screw is arranged at one end of the Y-axis motor, and a mobile bracket is arranged at the upper end of the Y-axis screw. The mobile bracket can move forward and backward in the Y-axis direction through the rotation of the Y-axis motor; an X-axis motor is arranged on the upper part of the mobile bracket, an X-axis screw is arranged at one side of the X-axis motor, and an X-axis slide is arranged at the upper end of the X-axis screw. The X-axis slide can be moved along the X-axis direction through the rotation of the X-axis motor; The X-axis slide is provided with a temperature control system. A laser module is provided on one side of the upper end of the temperature control system. The temperature control system is used to heat the laser module. A storage tray is provided on the other side of the upper end of the temperature control system to hold the recycled VBG assembly blocks. The Z-axis fixing frame is located at one end of the fixing bracket, a Z-axis motor is arranged on the upper part of the Z-axis fixing frame, a Z-axis lead screw is arranged at the lower end of the Z-axis motor, a Z-axis slide is arranged on one side of the Z-axis lead screw, and the Z-axis slide can move up and down along the Z-axis direction under the drive of the Z-axis motor, and a recovery mechanism is arranged on one side of the Z-axis slide for grabbing the VBG assembly block to be recovered and placing it in the storage tray; The recovery mechanism includes a Z-axis lifting frame, an adjusting motor is arranged at the upper end of the Z-axis lifting frame, an upper fixing block and a lower fixing block are arranged at the lower end of the adjusting motor, a driving wheel and a driven wheel are arranged between the upper fixing block and the lower fixing block, the driving wheel is connected to the adjusting motor through a bearing, and a belt is arranged on the outer side of the driving wheel and the driven wheel, and the driving wheel can be driven to rotate by the rotation of the adjusting motor, and the driven wheel is driven to rotate through the belt when the driving wheel rotates; A clamping cylinder is provided at the upper part of one end of the upper fixed block, a clamping slide is provided at the lower end of the clamping cylinder, the upper end of the clamping slide is connected to the driven wheel and the clamping cylinder, a clamping claw is provided at the lower end of the clamping slide, the clamping cylinder, the clamping slide and the clamping claw are integrally moved with the rotation of the driven wheel, and the clamping claw can be opened and closed by starting the clamping cylinder; A heating groove is arranged on one side of the upper end of the temperature control system. The length and width of the heating groove are adapted to the length and width of the shell of the laser module. The depth of the heating groove is 10-20 mm. A heating plate is arranged at the bottom of the heating groove. The heating groove is heated by the heating plate. The laser module is placed in the heating groove. The temperature control system is provided with a touch screen at the front end to display the temperature of the heating tank. A temperature adjustment knob and a temperature control switch are provided on one side of the touch screen. The temperature control adjustment knob is used to manually adjust the heating temperature of the temperature control system, and the temperature control switch is used to control the start and stop of the temperature control system. The laser module is provided with a shell on the outside, the shell is made of copper, N VBG assembly blocks are arranged in the shell, N ≥ 2, the VBG assembly block is composed of an upper VBG and a lower heat sink, and the VBG and the heat sink, and the heat sink and the bottom of the shell are bonded with UV glue; The temperature control system is used to heat the shell of the laser module to melt the UV glue at the bottom of the heat sink in the VBG assembly block in the laser module, thereby facilitating the removal of the VBG assembly block from the shell; The recycling method of the wavelength-locked fiber laser module VBG recycling device is characterized by comprising the following steps: (1) Place the laser module to be recycled by VBG into the heating tank at the upper end of the temperature control system; (2) Setting the heating program through the touch screen of the temperature control system, the program sets the heating temperature to 150-200 degrees Celsius; (3) Turn on the temperature control switch button of the temperature control system. The temperature control system automatically heats the laser module according to the program setting to soften the UV glue at the lower end of the heat sink in the laser module; (4) The VBG assembly block is automatically moved to the bottom of the clamping claw by the operation of the X-axis motor and the Y-axis motor, and the Z-axis motor is operated to move the clamping claw downward. The motor operation is adjusted to adjust the angle of the clamping claw through the belt, and the clamping cylinder is operated to clamp the two ends of the heat sink. (5) The Z-axis motor drives the gripping claw to lift upward, so that the VBG assembly block is separated from the laser module housing, and then the gripping claw automatically moves the VBG assembly block to the upper end of the storage tray; (6) The Z-axis motor drives the clamping claw to move downward, and adjusts the angle of the clamping claw by adjusting the motor to place the VBG assembly block into the fixed groove of the storage tray; (7) Repeat steps (4) to (6) until all VBG assembly blocks in the laser module are recovered. The device automatically resets, and the temperature control system automatically turns off the heating, and the laser module begins to cool down. (8) When the temperature of the laser module drops to room temperature, remove the laser module from the temperature control system, place another laser module, and repeat steps (3) to (7) to continue recycling the VBG assembly block; (9) After all the fixed slots of the storage tray are filled with VBG assembly blocks, remove the storage tray for cleaning; (10) Take out the cleaned storage tray, blow dry the cleaned VBG assembly block with nitrogen, and put the VBG assembly block into the recycling box for use, thus completing the laser module VBG recycling work.

2. The wavelength-locked fiber laser module VBG recovery device according to claim 1, characterized in that: An adjusting wheel is provided on one side of the belt for adjusting the tightness of the belt; An adjusting shaft is provided at the upper end of the adjusting wheel, and a connecting piece with a long groove is fixedly provided on the upper fixed block. The adjusting shaft is fixed in the long groove of the connecting piece by screws. The front and rear position of the adjusting wheel can be adjusted by adjusting the position of the fixing screws to prevent the belt from loosening during use.

3. The wavelength-locked fiber laser module VBG recovery device according to claim 2, characterized in that: The storage tray is fixed on the temperature control system through a storage fixing seat, the four corners of the lower end of the storage fixing seat are respectively provided with fixing legs, and the four corners of the upper end of the storage fixing seat are respectively provided with positioning right angles for positioning the storage tray; The receiving material tray is provided with M evenly arranged fixing grooves, M≥2, the length and width of the fixing grooves are adapted to the length and width of the heat sink, and the depth of the fixing grooves is less than the height of the heat sink.

4. The wavelength-locked fiber laser module VBG recovery device according to claim 3, characterized in that: The upper end of the fixing groove is provided with a bevel, and the inclination angle of the bevel is 30-60 degrees, which is convenient for placing the VBG combination block into the fixing groove of the storage tray.

5. The wavelength-locked fiber laser module VBG recovery device according to claim 4, characterized in that: The width of the clamping claw when opened is adapted to the width of the heat dissipation block at the lower end of the VBG assembly block, and the clamping claw grabs the two ends of the long side of the heat dissipation block.

6. The wavelength-locked fiber laser module VBG recovery device according to claim 5, characterized in that: The cleaning process in step (9) is as follows: placing the sample in an ultrasonic cleaning machine tank, adding acetone and performing ultrasonic cleaning for 5-10 minutes.

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