Laser energy adjusting device

Abstract

A laser energy adjusting device disclosed by the present invention comprises a housing, two groups of frames, an attenuation assembly and an adjusting assembly, the two groups of frames are respectively located at the top and the bottom of the inner cavity of the housing, each group of frames is connected with the inner wall of the frame through a movable assembly, and the two groups of frames can be in face-to-face contact or away from each other in opposite directions. The attenuation assembly comprises a plurality of upper attenuation pieces and a plurality of lower attenuation pieces which are transversely distributed in the inner cavity of the housing in a staggered mode, the upper attenuation pieces are movably inserted into the frame body at the top, the lower attenuation pieces are movably inserted into the frame body at the bottom, and the adjusting assembly is used for enabling the upper attenuation pieces and the lower attenuation pieces of different numbers to be inserted into the light beam channel to adjust laser energy; the energy of unit time finally emitted by laser is adjusted by superposing different numbers of upper attenuation slices and lower attenuation slices, and the output power is not required to be reduced by reducing voltage and current, so that the laser works stably, the service life is long, and the stability of emitted laser beams is high.

Description

Technical Field

[0001] The invention relates to the technical field of laser processing, in particular to a laser energy regulating device. Background Art

[0002] Laser can be used to perform processing procedures such as drilling, cutting, slicing, welding, and heat treatment on materials. It uses the energy of light to reach a very high energy density at the focal point after being focused by a lens, and relies on the photothermal effect for processing. It has the advantages of fast processing speed and small surface deformation.

[0003] In laser processing, it is necessary to adjust the laser energy according to different processing steps. Traditionally, most semiconductor lasers reduce the output power by lowering the voltage and current. This method easily leads to unstable operation of the laser and shortens the service life 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 the present invention is to provide a laser energy regulating device to solve the problems raised in the above background technology.

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

[0006] The cover shell has an inlet at the front end and an outlet at the rear end, the inlet and the outlet form a beam channel, and the cover shell is provided with a connecting component, the connecting component is used to connect the cover shell with the laser so that the beam channel is connected to the laser nozzle;

[0007] There are two groups of frames, which are respectively located at the top and bottom of the inner cavity of the housing. Each group of frames is connected to the inner wall of the frame through a movable component. The two groups of frames can contact each other or move away from each other in opposite directions.

[0008] The attenuation assembly includes a plurality of upper attenuation sheets and a plurality of lower attenuation sheets which are laterally staggered and distributed in the inner cavity of the housing, wherein the plurality of upper attenuation sheets are movably plugged into the top frame, and the plurality of lower attenuation sheets are movably plugged into the bottom frame;

[0009] The adjusting component is used to insert different numbers of upper attenuation plates and lower attenuation plates into the beam channel to adjust the laser energy.

[0010] As a preferred technical solution, the connection assembly includes a plurality of pads arranged at the front end of the cover shell, the pads are screwed with liner rods, and the liner rods are extended and screwed with abutment plates.

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

[0012] As a preferred technical solution, the movable component includes a plurality of guide rods arranged on the frame and an electric cylinder body installed on the inner wall of the cover shell, the movable end of the electric cylinder body is connected to the frame body, and the plurality of guide rods extend vertically out of the cover shell.

[0013] As a preferred technical solution, the rear end of the cover shell is slidably connected to two groups of cover plates, elastic parts are provided on the two groups of cover plates, and pull ropes are provided on each group of cover plates. The pull ropes pass through the cover shell and are correspondingly connected to a group of frames. When the two groups of frames are in contact with each other, the two groups of cover plates close the outlets. When the two groups of frames move away from each other in opposite directions, the cover plates are pulled by the pull ropes to open the outlets.

[0014] As a preferred technical solution, each of the upper attenuation plates and each of the lower attenuation plates is provided with an edge plate, and the edge plate is provided with an oblique insertion block. The two groups of the frame bodies are respectively provided with elastic covering strips, and the elastic covering strips are provided with a plurality of grooves for the oblique insertion blocks to be inserted. Ball bodies are provided on the inner walls of both sides of each groove body, and the oblique insertion block pushes the ball body to move outward when inserted into the groove body.

[0015] As a preferred technical solution, the adjustment assembly includes a moving rod arranged on the inner wall of the cover shell and moving plates respectively slidably connected to the two groups of the frame bodies, the moving rod is screwed with a moving block, each group of the moving plates is provided with a group of telescopic rods, the two groups of telescopic rods extend and are connected to the moving blocks, each group of the moving plates is rotatably connected to a roller body, a chain plate is wrapped around the roller body, and the chain plate is connected to the frame body.

[0016] As a preferred technical solution, a motor body is installed on the inner wall of the cover shell, and the motor body drives the movable rod to rotate, so that the shifting block moves horizontally to drive the two groups of shifting plates to slide on the frame plates respectively, and release the two groups of chain plates to press the upper attenuation plate and the lower attenuation plate respectively.

[0017] The present invention also provides a laser energy adjustment method, which is used in any of the above technical solutions and specifically comprises the following steps:

[0018] S1, control the two sets of frames to move away from each other in opposite directions through the movable components to open the beam channel;

[0019] S2, controlling and adjusting the assembly so that the total number of upper attenuation sheets and lower attenuation sheets required are inserted into the beam channel;

[0020] S3, control the operation of the laser so that the laser emits a laser beam which passes through the beam channel, adjusts the energy and then emits it for processing.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By superimposing different numbers of upper and lower attenuation plates, the energy per unit time of the final laser emission can be adjusted, without reducing the output power by lowering the voltage or current, so that the laser can work stably, have a long service life, and have a high stability of the emitted laser beam;

[0023] The two sets of cover plates close the outlet under the elastic pulling action of the elastic member. When the laser is in a non-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 judged whether the working state of the laser can be turned on, avoiding the direct emission of a laser beam with high energy, effectively improving the operating safety;

[0024] When the chain plate is crimped to the upper and lower attenuation sheets and inserted into the beam channel, the chain plate wrapped on the roller body first contacts the upper and lower attenuation sheets. At this time, the shape of the chain plate is arc-shaped due to being wrapped on the roller body, so that the upper and lower attenuation sheets can be crimped smoothly. After crimping, the upper and lower attenuation sheets are blocked by the chain plate and will not reset upwards.

[0025] The upper and lower attenuation sheets crimped by the chain plates are inserted into the light beam channel, driving the oblique insertion block into the slot body, and pushing the ball bearings outward to deform the slot body. After the chain plates are separated from the crimping of the upper and lower attenuation sheets, the slot body is reset to drive the ball bearings to push out the oblique insertion block, thereby automatically resetting the unnecessary upper and lower attenuation sheets to leave the light beam channel. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0030] Figure 5 This is a schematic diagram of the plug-in relationship between the attenuation component and the frame of the present invention;

[0031] Figure 6 This is a schematic diagram of the position relationship between the oblique insertion block and the slot body of the present invention;

[0032] In the figure: 10, cover shell; 11, inlet; 111, pressure ring; 12, outlet; 121, cover plate; 122, elastic member; 123, pull rope; 20, connecting assembly; 21, pad; 22, lining rod; 23, abutment plate; 30, frame; 31, elastic covering strip; 311, groove body; 312, ball body; 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, oblique insertion block; 60, adjustment assembly; 61, moving rod; 62, shifting plate; 63, shifting block; 64, telescopic rod; 65, roller body; 66, chain plate; 67, motor body. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments 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.

[0034] See also Figure 1-6

[0035] Embodiment 1

[0036] Provide a laser energy regulating device:

[0037] See also Figure 1 An inlet 11 is provided at the front end of the cover 10, and an outlet 12 is provided at the rear end of the cover 10. The inlet 11 and the outlet 12 form a beam channel, and the beam channel is used for passing the laser generated by the laser, and adjusting the energy per unit time of the laser finally emitted in the beam channel.

[0038] See also Figure 3 A connecting assembly 20 is arranged on the cover 10, and the connecting assembly 20 is used to connect the cover 10 with the laser so that the light beam channel docks with the laser nozzle. The connecting assembly 20 includes a plurality of pads 21 arranged at the front end of the cover 10, and the pads 21 are screwed with lining rods 22, and the lining rods 22 are extended and screwed with abutment plates 23.

[0039] When the cover 10 is connected to the laser, the abutment plate 23 can be fixed against the outer shell of the laser by tightening a plurality of movable plates. A pressure ring 111 is provided at the front end of the cover 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, that is, improving the safety of use.

[0040] See also Figure 1There are two groups of frames 30, which are respectively located at the top and bottom of the inner cavity of the housing 10. Each group of frames 30 is connected to the inner wall of the frames 30 through a movable component 40, and the two groups of frames 30 can contact each other or move away from each other in opposite directions.

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

[0042] See also Figure 1 , Figure 5 The attenuation assembly 50 includes a plurality of upper attenuation sheets 51 and a plurality of lower attenuation sheets 52 which are laterally staggered and distributed in the inner cavity of the cover shell 10. The plurality of upper attenuation sheets 51 are movably plugged into the top frame 30, and the plurality of lower attenuation sheets 52 are movably plugged into the bottom frame 30.

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

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

[0045] Embodiment 2

[0046] Based on the first embodiment, a laser energy adjustment device is provided:

[0047] See also Figure 4 The movable assembly 40 includes a plurality of guide rods 42 arranged on the frame 30 and an electric cylinder body 41 installed on the inner wall of the cover 10 . The movable end of the electric cylinder body 41 is connected to the frame 30 , and the plurality of guide rods 42 vertically extend out of the cover 10 .

[0048] The electric cylinder body 41 can be used to drive the two groups of frames 30 to contact each other or move away from each other. By observing the extension length of the multiple guide rods 42 on the cover 10, it can be determined whether the working state of the laser can be turned on. When the two groups of frames 30 contact each other, the extension length of the multiple guide rods 42 is shorter. When the two groups of frames 30 move away from each other, the extension length of the multiple guide rods 42 is longer. When the multiple guide rods 42 extend longer outside the cover 10, the laser can be controlled to emit a laser beam.

[0049] See also Figure 1 , Figure 2 The rear end of the cover shell 10 is slidably connected to two groups of cover plates 121. Elastic members 122 are provided on the two groups of cover plates 121. The elastic members 122 are springs, one end of which is connected to one group of cover plates 121, and the other end is connected to the other group of cover plates 121. The elastic members 122 are provided to elastically pull the two groups of cover plates 121 on the cover shell 10.

[0050] See also Figure 1 , Figure 2 A pull rope 123 is provided on each set of cover plates 121, and the pull rope 123 penetrates into the cover shell 10 and is connected to a corresponding set of frame bodies 30. When the two sets of frame bodies 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 pulling action of the elastic member 122, that is, the laser closes the cover shell 10 when it is in a non-working state to prevent impurities from entering the cover shell 10. When the two sets of frame bodies 30 move away from each other in the opposite direction, the pull rope 123 is used to pull the cover plate 121 to open the outlet 12, so that the laser beam emitted by the laser in the working state can pass through the beam channel smoothly and be emitted for processing.

[0051] Embodiment 3

[0052] Based on the first or second embodiment, a laser energy adjustment device is provided:

[0053] See also Figure 4 , Figure 5 The adjustment assembly 60 includes a movable rod 61 arranged on the inner wall of the cover shell 10 and shift plates 62 respectively slidably connected to the two groups of frame bodies 30. The movable rod 61 is screwed with a shift block 63. Each group of shift plates 62 is provided with a group of telescopic rods 64. The two groups of telescopic rods 64 extend and are connected to the shift blocks 63. Each group of shift plates 62 is rotatably connected with a roller body 65. A chain plate 66 is wound around 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 for pulling the roller body 65 to reel in the chain plate 66, that is, keeping the chain plate 66 in a tensioned state.

[0054] The two groups of shift plates 62 are connected to the shift blocks 63 through telescopic rods 64 respectively, so that the two groups of frame plates can drive the telescopic rods 64 to be extended and retracted adaptively when they are in contact with each other or moving away from each other.

[0055] See also Figure 4 , Figure 5 A motor body 67 is installed on the inner wall of the cover shell 10. The motor body 67 drives the movable rod 61 to rotate, so that the shifting block 63 moves horizontally to drive the two sets of shifting plates 62 to slide on the frame plate respectively, and releases two sets of chain plates 66 to press the upper attenuation plate 51 and the lower attenuation plate 52 respectively.

[0056] The motor body 67 is controlled to drive the movable rod 61 to rotate, and the position of the shift block 63 on the movable rod 61 can be adjusted, so that the shift block 63 drives the two groups of shift plates 62 to move synchronously on the frame 30 respectively. When the shift 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 released is different according to the position of the shift plate 62 on the frame plate, so that the released chain plate 66 can be crimped with the upper attenuation plate 51 and the lower attenuation plate 52 on the corresponding frame 30. The crimped upper attenuation plate 51 and the lower attenuation plate 52 are inserted into the beam channel to attenuate the passing laser beam, and finally a laser beam that meets the processing energy requirements is obtained; the motor body 67 is preferably a servo motor, which can be precisely controlled to crimp the required number of upper attenuation plates 51 and lower attenuation plates 52.

[0057] During the process of the chain plate 66 crimping the upper attenuation sheet 51 and the lower attenuation sheet 52 and inserting them into the light beam channel, the chain plate 66 wrapped around the roller body 65 first contacts the upper attenuation sheet 51 and the lower attenuation sheet 52. At this time, the shape of the chain plate 66 is arc-shaped due to being wrapped around the roller body 65, so that the upper attenuation sheet 51 and the lower attenuation sheet 52 can be crimped smoothly. After crimping, the upper attenuation sheet 51 and the lower attenuation sheet 52 are blocked by the chain plate 66 and will not reset upward.

[0058] See also Figure 5 , Figure 6 Each upper attenuation sheet 51 and each lower attenuation sheet 52 is provided with an edge plate 53, and an oblique insertion block 531 is provided on the edge plate 53. The two groups of frame bodies 30 are respectively provided with elastic covering strips 31, and the elastic covering strips 31 are preferably made of rubber material. The elastic covering strips 31 are provided with a plurality of grooves 311 for the oblique insertion blocks 531 to be inserted. The inner walls of both sides of each groove 311 are provided with ball bodies 312. When the oblique insertion block 531 is inserted into the groove body 311, the ball body 312 is pushed outward.

[0059] By setting the edge plate 53 to increase the contact area with the chain plate 66, the upper attenuation plate 51 and the lower attenuation plate 52 crimped by the chain plate 66 are inserted into the light beam channel, and the oblique insertion block 531 enters the groove body 311 of the elastic covering strip 31, and pushes the ball body 312 outward to deform the groove body 311. After the chain plate 66 is separated from the crimping of the upper attenuation plate 51 and the lower attenuation plate 52, the groove body 311 is reset to drive the ball to push the oblique insertion block 531 out, thereby realizing automatic reset of the unnecessary upper attenuation plate 51 and the lower attenuation plate 52 to leave the light beam channel.

[0060] Embodiment 4

[0061] A laser energy adjustment method is provided, which specifically comprises the following steps:

[0062] S1, controlling the two sets of frames 30 to move away from each other in the opposite direction through the movable component 40 to open the light beam channel;

[0063] S2, controlling the adjustment component 60 so that the total number of the upper attenuation sheets 51 and the lower attenuation sheets 52 required are inserted into the beam channel;

[0064] S3, control the operation of the laser so that the laser emits a laser beam which passes through the beam channel, adjusts the energy and then emits it for processing.

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

Claims

1. A laser energy regulating device, characterized in that: include: The cover (10) has an inlet (11) at the front end and an outlet (12) at the rear end, wherein the inlet (11) and the outlet (12) form a light beam channel, and the cover (10) is provided with a connecting component (20), which is used to connect the cover (10) with the laser so that the light beam channel is connected to the laser nozzle; There are two groups of frames (30), which are respectively located at the top and bottom of the inner cavity of the housing (10); each group of frames (30) is connected to the inner wall of the frames (30) via a movable component (40); the two groups of frames (30) can contact each other or move away from each other; The attenuation assembly (50) comprises a plurality of upper attenuation sheets (51) and a plurality of lower attenuation sheets (52) which are laterally staggered and distributed in the inner cavity of the housing (10); the plurality of upper attenuation sheets (51) are movably plugged into the top frame (30); and the plurality of lower attenuation sheets (52) are movably plugged into the bottom frame (30); The adjustment component (60) is used to insert different numbers of upper attenuation plates (51) and lower attenuation plates (52) into the beam channel to adjust the laser energy.

2. The laser energy adjustment device according to claim 1, characterized in that: The connection assembly (20) comprises a plurality of pads (21) arranged at the front end of the housing (10), the pads (21) being screwed with liner rods (22), and the liner rods (22) being extended and screwed with abutment plates (23).

3. The laser energy adjustment device according to claim 2, characterized in that: A pressure ring (111) is arranged at the front end of the cover shell (10), and the pressure ring (111) 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 assembly (40) comprises a plurality of guide rods (42) arranged on the frame (30) and an electric cylinder body (41) mounted on the inner wall of the cover shell (10); the movable end of the electric cylinder body (41) is connected to the frame (30), and the plurality of guide rods (42) extend vertically out of the cover shell (10).

5. The laser energy adjustment device according to claim 5, characterized in that: The rear end of the cover shell (10) is slidably connected to two groups of cover plates (121), and the two groups of cover plates (121) are provided with elastic members (122), and each group of cover plates (121) is provided with a pull rope (123), the pull rope (123) penetrates into the cover shell (10) and is correspondingly connected to a group of frames (30), when the two groups of frames (30) are in contact with each other, the two groups of cover plates (121) close the outlet (12), and when the two groups of frames (30) move away from each other in the opposite direction, the cover plates (121) are pulled by the pull ropes (123) to open the outlet (12).

6. The laser energy adjustment device according to claim 1, characterized in that: Each of the upper attenuation plates (51) and each of the lower attenuation plates (52) is provided with an edge plate (53), and an oblique insertion block (531) is provided on the edge plate (53). The two groups of the frame bodies (30) are respectively provided with elastic covering strips (31), and the elastic covering strips (31) are provided with a plurality of grooves (311) for the oblique insertion blocks (531) to be inserted. Ball bodies (312) are provided on the inner walls of both sides of each groove body (311), and when the oblique insertion block (531) is inserted into the groove body (311), the ball body (312) is pushed to move outward.

7. The laser energy adjustment device according to claim 1, characterized in that: The adjustment assembly (60) comprises a movable rod (61) arranged on the inner wall of the cover shell (10) and a shift plate (62) respectively slidably connected to the two groups of the frame bodies (30); the movable rod (61) is screwed with a shift block (63); each group of the shift plates (62) is provided with a group of telescopic rods (64); the two groups of telescopic rods (64) extend and are connected to the shift blocks (63); each group of the shift plates (62) is rotatably connected to a roller body (65); a chain plate (66) is wound around the roller body (65); and the chain plate (66) is connected to the frame body (30).

8. The laser energy adjustment device according to claim 7, characterized in that: A motor body (67) is installed on the inner wall of the cover shell (10), and the motor body (67) drives the movable rod (61) to rotate, so that the shifting block (63) moves horizontally to drive the two groups of shifting plates (62) to slide on the frame plate respectively, and release the two groups of chain plates (66) to press the upper attenuation plate (51) and the lower attenuation plate (52) respectively.

9. A laser energy regulation method, used in the laser energy regulation device according to any one of claims 1 to 9, comprising the following steps: S1, controlling the two sets of frames (30) to move away from each other in opposite directions through the movable component (40) to open the light beam channel; S2, controlling the adjustment component (60) so that the total number of upper attenuation plates (51) and lower attenuation plates (52) required are inserted into the beam channel; S3, control the operation of the laser so that the laser emits a laser beam which passes through the beam channel, adjusts the energy and then emits it for processing.

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