Laser energy adjustment device

Abstract

The application discloses a kind of laser energy adjusting devices, including cover, frame, attenuation component and adjustment component, frame has two groups, respectively located in the top and bottom of shell inner cavity, each frame is connected with frame inner wall by movable component, two groups of frame can be contacted or reversed away, attenuation component includes multiple upper attenuation pieces and multiple lower attenuation pieces staggered distribution in shell inner cavity transversely, multiple upper attenuation pieces are movably inserted in the frame on top, multiple lower attenuation pieces are movably inserted in the frame on bottom, adjustment component is used to make different number of upper attenuation pieces and lower attenuation pieces insert into light beam channel and adjust laser energy;By superimposing different number of upper attenuation pieces and lower attenuation pieces, the energy of unit time finally emitted by laser is adjusted, without reducing output power by reducing voltage and reducing current, so that laser works stably, service life is long, and the stability of emitted laser beam is high.

Description

Technical Field

[0001] This invention relates to the field of laser processing technology, specifically to a laser energy adjustment device. Background Technology

[0002] Lasers can perform processing steps on materials such as drilling, cutting, scribing, welding, and heat treatment. They utilize the energy of light, which is focused by a lens to achieve a very high energy density at the focal point, and are processed by photothermal effect. They have the advantages of fast processing speed and small surface deformation.

[0003] In laser processing, the laser energy needs to be adjusted according to different processing steps. Traditional semiconductor lasers mostly reduce output power by lowering voltage and current. This method can easily lead to unstable laser operation and shorten the lifespan of the laser. Based on this, the present invention proposes a laser energy adjustment device that can solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a laser energy adjustment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser energy adjustment device, comprising:

[0006] The housing has an inlet at the front end and an outlet at the rear end, the inlet and the outlet forming a beam channel, and the housing is equipped with a connecting component for connecting the housing to the laser, so that the beam channel is aligned with the laser port.

[0007] There are two sets of frames, located at the top and bottom of the inner cavity of the cover, respectively. Each set of frames is connected to the inner wall of the frame through a movable component. The two sets of frames can contact each other or move away from each other.

[0008] The attenuation assembly includes multiple upper attenuation plates and multiple lower attenuation plates that are laterally staggered in the inner cavity of the housing. The multiple upper attenuation plates are movably inserted into the top frame, and the multiple lower attenuation plates are movably inserted into the bottom frame.

[0009] An adjustment assembly is used to insert different numbers of upper and lower attenuators into the beam channel to adjust the laser energy.

[0010] As a preferred technical solution, the connecting assembly includes a plurality of pads disposed at the front end of the housing, each pad being screwed with a bushing, and the bushing extending and screwed with a stop plate.

[0011] As a preferred technical solution, a pressure ring is provided at the front end of the housing, which can contact the outer wall of the laser to laterally isolate the inlet.

[0012] As a preferred technical solution, the movable component includes multiple guide rods disposed on the frame and an electric cylinder mounted on the inner wall of the housing. The movable end of the electric cylinder is connected to the frame, and the multiple guide rods extend vertically through the housing.

[0013] As a preferred technical solution, two sets of cover plates are slidably connected to the rear end of the cover. Each set of cover plates is provided with an elastic element, and each set of cover plates is provided with a pull rope. The pull rope passes through the cover and is connected to a corresponding set of frames. When the two sets of frames are in contact with each other, the two sets of cover plates close the outlet. When the two sets of frames are moving away from each other, the pull ropes pull the cover plates to open the outlet.

[0014] As a preferred technical solution, each of the upper attenuator and each of the lower attenuator is provided with a side plate, and the side plate is provided with a slanted insertion block. The two sets of frames are respectively provided with elastic covering strips, and the elastic covering strips are provided with multiple slots for the slanted insertion blocks to be inserted. Each slot is provided with ball bearings on both sides of its inner wall. When the slanted insertion block is inserted into the slot, it pushes the ball bearings outward.

[0015] As a preferred technical solution, the adjustment assembly includes a movable rod disposed on the inner wall of the housing and a sliding plate slidably connected to two sets of the frame. The movable rod is screwed with a sliding block. Each set of the sliding plates is provided with a set of telescopic rods. The two sets of telescopic rods extend and connect to the sliding block. Each set of the sliding plates is rotatably connected to a roller. A chain plate is wound around the roller and connected to the frame.

[0016] As a preferred technical solution, a motor body is installed on the inner wall of the housing. The motor body drives the moving rod to rotate, causing the moving block to move laterally and drive the two sets of moving plates to slide on the frame plate respectively, releasing the two sets of chain plates to press the upper attenuator and the lower attenuator respectively.

[0017] This invention also includes a laser energy modulation method for any of the above-mentioned technical solutions, specifically comprising the following steps:

[0018] S1. Control the two sets of frames to move away from each other through the active components to open the beam channel;

[0019] S2. Control the adjustment components to insert the required total number of upper and lower attenuators into the beam channel;

[0020] S3. Control the laser to work, so that the laser beam emitted by the laser is adjusted in energy after passing through the beam channel and then emitted for processing.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] By superimposing different numbers of upper and lower attenuators, the energy per unit time of the final laser emission can be adjusted, eliminating the need to reduce the output power by lowering the voltage or current. This results in stable laser operation, long service life, and high stability of the emitted laser beam.

[0023] The two sets of cover plates close the outlet under the elastic pull of the elastic element. When the laser is not in working state, the cover is closed to prevent impurities from entering the cover. By observing the length of the multiple guide rods extending on the cover, it can be determined whether the laser can be turned on. This avoids directly emitting a high-energy laser beam and effectively improves operational safety.

[0024] During the process of pressing the upper and lower attenuators into the beam channel by the chain plate, the chain plate wrapped around the roller first contacts the upper and lower attenuators. At this time, the shape of the chain plate is arc-shaped due to being wrapped around the roller, which allows the upper and lower attenuators to be pressed smoothly. After pressing, the upper and lower attenuators will not return to their original position due to the obstruction of the chain plate.

[0025] The upper and lower attenuators, pressed by the chain plate, are inserted into the beam channel, which drives the inclined insertion block into the slot and pushes the ball bearings out of the slot, causing the slot to deform. After the chain plate disengages from pressing the upper and lower attenuators, the slot resets and drives the ball bearings to push the inclined insertion block out, thus achieving automatic reset of the unwanted upper and lower attenuators away from the beam channel. Attached Figure Description

[0026] Figure 1 This is a first-angle sectional view of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram showing the distribution of the outlets on the casing of the present invention;

[0028] Figure 3 This is a schematic diagram showing the distribution of the inlet on the casing of the present invention;

[0029] Figure 4 This is a second-angle sectional view of the overall structure of the present invention;

[0030] Figure 5 This is a schematic diagram showing the connection between the attenuation component and the frame of the present invention;

[0031] Figure 6 This is a schematic diagram showing the positional relationship between the inclined insertion block and the groove body of the present invention;

[0032] In the diagram: 10. Cover; 11. Inlet; 111. Pressure ring; 12. Outlet; 121. Cover plate; 122. Elastic element; 123. Pull rope; 20. Connecting assembly; 21. Pad plate; 22. Liner rod; 23. Support plate; 30. Frame; 31. Elastic strip; 311. Groove; 312. Ball bearing; 40. Movable assembly; 41. Electric cylinder body; 42. Guide rod; 50. Attenuation assembly; 51. Upper attenuation plate; 52. Lower attenuation plate; 53. Edge plate; 531. Inclined insert block; 60. Adjustment assembly; 61. Moving rod; 62. Moving plate; 63. Moving block; 64. Telescopic rod; 65. Roller body; 66. Chain plate; 67. Motor body. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-6

[0035] Example 1

[0036] Provide a laser energy adjustment device:

[0037] Please see Figure 1 The front end of the cover 10 has an inlet 11 and the rear end of the cover 10 has an outlet 12. The inlet 11 and the outlet 12 form a beam channel. The beam channel is used for the laser generated by the laser to pass through, and the energy of the laser emitted per unit time is adjusted in the beam channel.

[0038] Please see Figure 3 The housing 10 is provided with a connecting assembly 20, which connects the housing 10 to the laser so that the beam channel is aligned with the laser port. The connecting assembly 20 includes a plurality of pads 21 disposed at the front end of the housing 10. The pads 21 are screwed with bushings 22, and the bushings 22 extend and are screwed with abutments 23.

[0039] When connecting the housing 10 to the laser, the abutment 23 can be fixed against the laser housing by tightening multiple movable plates. A pressure ring 111 is provided at the front end of the housing 10. The pressure ring 111 can contact the outer wall of the laser to laterally isolate the inlet 11, thereby preventing external impurities from leaking into the opening, which improves the safety of use.

[0040] Please see Figure 1There are two sets of frames 30, which are located at the top and bottom of the inner cavity of the cover 10, respectively. Each set of frames 30 is connected to the inner wall of the frame 30 through the movable component 40. The two sets of frames 30 can contact each other or move away from each other.

[0041] When the two sets of frames 30 are in contact with each other, the laser is in a stopped state, that is, there is no need to adjust the laser energy. When the two sets of frames 30 are moving away from each other, the laser can be turned on.

[0042] Please see Figure 1 , Figure 5 The attenuation assembly 50 includes a plurality of upper attenuator plates 51 and a plurality of lower attenuator plates 52 that are laterally staggered in the inner cavity of the housing 10. The plurality of upper attenuator plates 51 are movably inserted into the top frame 30, and the plurality of lower attenuator plates 52 are movably inserted into the bottom frame 30.

[0043] Please see Figure 1 The adjustment component 60 is used to insert different numbers of upper attenuators 51 and lower attenuators 52 into the beam channel to adjust the laser energy.

[0044] The horizontally staggered distribution of multiple upper attenuators 51 and multiple lower attenuators 52 effectively reduces the space occupied. When the laser beam passes through the upper attenuators 51 and multiple lower attenuators 52, the energy of the laser can be attenuated. The laser attenuation transmittance values ​​of multiple upper attenuators 51 and multiple lower attenuators 52 are consistent. By superimposing different numbers of upper attenuators 51 and lower attenuators 52, the energy per unit time of the final laser emission can be adjusted. There is no need to reduce the output power by reducing the voltage or current, which makes the laser work stably, has a long service life, and has high stability of the emitted laser beam.

[0045] Example 2

[0046] Based on Embodiment 1, a laser energy adjustment device is provided:

[0047] Please see Figure 4 The active component 40 includes multiple guide rods 42 disposed on the frame 30 and an electric cylinder 41 mounted on the inner wall of the cover 10. The movable end of the electric cylinder 41 is connected to the frame 30, and the multiple guide rods 42 extend vertically through the cover 10.

[0048] The electric cylinder 41 can drive the two sets of frames 30 to contact each other or move away from each other. By observing the length of the multiple guide rods 42 extending out of the cover 10, it can be determined whether the laser can be turned on. When the two sets of frames 30 are in contact with each other, the length of the multiple guide rods 42 is shorter. When the two sets of frames 30 are moving away from each other, the length of the multiple guide rods 42 is longer. When the multiple guide rods 42 extend a long distance out of the cover 10, the laser can be controlled to emit a laser beam.

[0049] Please see Figure 1 , Figure 2 Two sets of cover plates 121 are slidably connected to the rear end of the cover 10. The two sets of cover plates 121 are provided with elastic elements 122. The elastic elements 122 are springs, one end of which is connected to one set of cover plates 121 and the other end of which is connected to the other set of cover plates 121. The elastic elements 122 provide elastic tension to the two sets of cover plates 121 on the cover 10.

[0050] Please see Figure 1 , Figure 2 Each set of cover plates 121 is equipped with a pull rope 123. The pull rope 123 passes through the cover 10 and is connected to a set of frames 30. When the two sets of frames 30 are in contact with each other, the two sets of cover plates 121 close the outlet 12. At this time, the two sets of cover plates 121 close the outlet 12 under the elastic pull of the elastic element 122. That is, when the laser is in a non-working state, the cover 10 is closed to prevent impurities from entering the cover 10. When the two sets of frames 30 move away from each other, the pull rope 123 pulls the cover plate 121 to open the outlet 12, so that the laser beam emitted by the laser in the working state can pass smoothly through the beam channel and be emitted for processing.

[0051] Example 3

[0052] Based on Embodiment 1 or Embodiment 2, a laser energy adjustment device is provided:

[0053] Please see Figure 4 , Figure 5 The adjustment assembly 60 includes a movable rod 61 disposed on the inner wall of the housing 10 and a shift plate 62 slidably connected to two sets of frame bodies 30. The movable rod 61 is screwed with a shift block 63. Each set of shift plates 62 is provided with a set of telescopic rods 64. The two sets of telescopic rods 64 extend and connect to the shift block 63. Each set of shift plates 62 is rotatably connected to a roller body 65. A chain plate 66 is wound on the roller body 65. The chain plate 66 is connected to the frame body 30. Preferably, a torque spring is provided on the roller body 65 to pull the roller body 65 to wind up the chain plate 66, that is, to keep the chain plate 66 in a taut state.

[0054] The two sets of moving plates 62 are connected to the moving block 63 by telescopic rods 64, so that the two sets of frame plates can drive the telescopic rods 64 to extend and retract accordingly when they are in contact with each other or moving away from each other.

[0055] Please see Figure 4 , Figure 5 A motor body 67 is installed on the inner wall of the cover 10. The motor body 67 drives the moving rod 61 to rotate, causing the moving block 63 to move laterally and drive the two sets of moving plates 62 to slide on the frame plate respectively, releasing the two sets of chain plates 66 to press the upper attenuator 51 and the lower attenuator 52 respectively.

[0056] The control motor body 67 drives the moving rod 61 to rotate, which can adjust the position of the moving block 63 on the moving rod 61, so that the moving block 63 drives the two sets of moving plates 62 to move synchronously on the frame 30. When the moving plate 62 moves on the frame 30, since one end of the chain plate 66 is connected to the frame 30, the length of the chain plate 66 extended varies according to the position of the moving plate 62 on the frame plate, so that the extended chain plate 66 can press the upper attenuator 51 and lower attenuator 52 on the corresponding frame 30. The pressed upper attenuator 51 and lower attenuator 52 are inserted into the beam channel to attenuate the passing laser beam, and finally obtain a laser beam that meets the processing energy requirements. The motor body 67 is preferably a servo motor, which can be precisely controlled to press the required number of upper attenuator 51 and lower attenuator 52.

[0057] During the process of pressing the upper attenuator 51 and the lower attenuator 52 into the beam channel by the chain plate 66, the chain plate 66 wrapped around the roller body 65 first contacts the upper attenuator 51 and the lower attenuator 52. At this time, the shape of the chain plate 66 is arc-shaped due to being wrapped around the roller body 65, which allows the upper attenuator 51 and the lower attenuator 52 to be pressed smoothly. After being pressed, the upper attenuator 51 and the lower attenuator 52 will not return to their original position due to the obstruction of the chain plate 66.

[0058] Please see Figure 5 , Figure 6 Each upper attenuator 51 and each lower attenuator 52 is provided with a side plate 53, and a slanted insertion block 531 is provided on the side plate 53. Each of the two sets of frames 30 is provided with an elastic cover strip 31, which is preferably made of rubber material. Multiple slots 311 for the slanted insertion block 531 to be inserted are provided on the elastic cover strip 31. Roller balls 312 are provided on the inner walls of both sides of each slot 311. When the slanted insertion block 531 is inserted into the slot 311, it pushes the roller balls 312 outward.

[0059] By increasing the contact area between the set edge plate 53 and the chain plate 66, the upper attenuator 51 and lower attenuator 52 pressed by the chain plate 66 are inserted into the beam channel. The inclined insertion block 531 enters the groove 311 of the elastic cover strip 31 and pushes the ball body 312 outward, causing the groove 311 to deform. After the chain plate 66 disengages from pressing the upper attenuator 51 and lower attenuator 52, the groove 311 resets and drives the ball to push out the inclined insertion block 531, thereby realizing the automatic reset of the unwanted upper attenuator 51 and lower attenuator 52 away from the beam channel.

[0060] Example 4

[0061] A laser energy modulation method is provided, specifically including the following steps:

[0062] S1. The two sets of frames 30 are controlled to move away from each other and open the beam channel by the active component 40.

[0063] S2. Control the adjustment component 60 to insert the required total number of upper attenuator 51 and lower attenuator 52 into the beam channel;

[0064] S3. Control the laser to work, so that the laser beam emitted by the laser is adjusted in energy after passing through the beam channel and then emitted for processing.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser energy adjustment device, characterized in that, include: The housing (10) has an inlet (11) at the front end and an outlet (12) at the rear end. The inlet (11) and the outlet (12) form a beam channel. A connecting component (20) is provided on the housing (10). The connecting component (20) is used to connect the housing (10) to the laser so that the beam channel is aligned with the laser port. There are two sets of frames (30), located at the top and bottom of the inner cavity of the cover (10) respectively. Each set of frames (30) is connected to the inner wall of the frame (30) through a movable component (40). The two sets of frames (30) can contact each other or move away from each other. The attenuation assembly (50) includes a plurality of upper attenuation plates (51) and a plurality of lower attenuation plates (52) that are laterally staggered in the inner cavity of the housing (10). The plurality of upper attenuation plates (51) are movably inserted into the top frame (30), and the plurality of lower attenuation plates (52) are movably inserted into the bottom frame (30). Adjustment component (60) is used to insert different numbers of upper attenuators (51) and lower attenuators (52) into the beam channel to adjust the laser energy; Each of the upper attenuator plate (51) and each of the lower attenuator plate (52) is provided with a side plate (53), and a slanted insert (531) is provided on the side plate (53). Each of the two sets of frames (30) is provided with an elastic cover strip (31). The elastic cover strip (31) is provided with a plurality of slots (311) for the slanted insert (531) to be inserted. Each slot (311) is provided with a ball bearing (312) on both sides of its inner wall. When the slanted insert (531) is inserted into the slot (311), it pushes the ball bearing (312) to move outward. The adjustment assembly (60) includes a movable rod (61) disposed on the inner wall of the cover (10) and a sliding plate (62) respectively slidably connected to two sets of the frame (30). The movable rod (61) is screwed with a sliding block (63). Each set of the sliding plate (62) is provided with a set of telescopic rods (64). The two sets of telescopic rods (64) extend and connect to the sliding block (63). Each set of the sliding plate (62) is rotatably connected to a roller (65). A chain plate (66) is wound on the roller (65). The chain plate (66) is connected to the frame (30). The inner wall of the cover (10) is equipped with a motor body (67). The motor body (67) drives the moving rod (61) to rotate, so that the moving block (63) moves laterally and drives the two sets of moving plates (62) to slide on the frame plate respectively, and releases the two sets of chain plates (66) to press the upper attenuator (51) and the lower attenuator (52) respectively.

2. The laser energy adjustment device according to claim 1, characterized in that, The connecting assembly (20) includes a plurality of pads (21) disposed at the front end of the housing (10), the pads (21) being screwed with bushings (22), and the bushings (22) extending to be screwed with abutments (23).

3. The laser energy adjustment device according to claim 2, characterized in that, The front end of the cover (10) is provided with a pressure ring (111), which can contact the outer wall of the laser to laterally isolate the inlet (11).

4. The laser energy adjustment device according to claim 1, characterized in that, The movable component (40) includes multiple guide rods (42) disposed on the frame (30) and an electric cylinder (41) mounted on the inner wall of the cover (10). The movable end of the electric cylinder (41) is connected to the frame (30), and the multiple guide rods (42) extend vertically through the cover (10).

5. The laser energy adjustment device according to claim 4, characterized in that, The rear end of the cover (10) is slidably connected to two sets of cover plates (121). The two sets of cover plates (121) are provided with elastic elements (122), and each set of cover plates (121) is provided with a pull rope (123). The pull rope (123) is inserted into the cover (10) and connected to a set of frames (30). When the two sets of frames (30) are in contact with each other, the two sets of cover plates (121) close the outlet (12). When the two sets of frames (30) are moving away from each other, the pull rope (123) pulls the cover plate (121) to open the outlet (12).

6. A laser energy adjustment method, used in the laser energy adjustment device according to any one of claims 1-5, specifically comprising the following steps: S1. Control the two sets of frames (30) to move away from each other and open the beam channel through the active component (40); S2, control the adjustment component (60) to insert the required total number of upper attenuator (51) and lower attenuator (52) into the beam channel; S3. Control the laser to work, so that the laser beam emitted by the laser is adjusted in energy after passing through the beam channel and then emitted for processing.

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