Laser etching device for circuit board processing

Abstract

The invention relates to the technical field of circuit board processing, in particular to a laser etching device for circuit board processing, which comprises a machine table and a laser etching head mounted above the machine table through a gantry sliding table, and square frames are symmetrically attached to the upper end of the machine table. When the laser etching machine is used for etching a circuit pattern on a circuit board, circuit boards with different sizes can be stably clamped from the upper end edge and the two side edges of the circuit board, and when a laser beam of the laser etching head is used for etching the circuit pattern on the edge of the circuit board, each clamping part can flexibly keep away from the laser beam, so that the circuit board can be stably clamped. And each clamping part can clamp the circuit board again when the laser beam moves, so that the stability of the circuit board is ensured while the clamping parts are prevented from being damaged by high temperature, and the etching of the circuit board is prevented from being influenced. When the laser etching machine is used for etching circuit patterns on a circuit board, generated smoke can be uniformly sucked away from the two sides and cannot drift upwards to interfere with a laser etching head.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board processing, and in particular to a laser etching device used for circuit board processing. Background Art

[0002] Circuit board is an important electronic component. It is the support of electronic components and the carrier of electrical connection of electronic components. In the process of circuit board production and processing, laser etcher is often used to etch the circuit pattern on the circuit board, and the laser etcher is equipped with a fixture. In the laser etching process, the laser beam should act accurately on the specific position of the circuit board. If the circuit board moves, the etching position will be inaccurate, affecting the quality of the circuit. The fixture can effectively fix the circuit board to prevent it from shifting during the etching process.

[0003] However, the fixtures of existing laser etchers are basically clamped on both sides of the circuit board, and the clamping part of the fixture fits the side of the circuit board. Some circuit boards need to etch the corresponding circuit pattern at their edge. When the laser beam irradiates the circuit board material, the material absorbs the energy of the laser, causing the local temperature to rise sharply, which makes the clamping part of the fixture susceptible to high temperature. In the long run, it will cause damage to the fixture of the laser etcher and affect the etching of the circuit board. At the same time, smoke and dust will be generated under the action of high temperature and drift upward, which is easy to interfere with the laser etching head of the laser etcher, thereby affecting the etching quality of the circuit board. Summary of the invention

[0004] The object of the present invention is to provide a laser etching device for circuit board processing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser etching device for circuit board processing, comprising a machine platform and a laser etching head installed on the machine platform through a gantry slide, the upper end of the machine platform is symmetrically bonded with square frames, the upper end of the machine platform is bonded with a circuit substrate between two square frames, a transmission mechanism is provided between the two square frames and the machine platform, two concave blocks are slidably provided at the upper ends of the two frames through a driving mechanism, and a clamping mechanism is provided on the four concave blocks; The clamping mechanism includes an electric push rod 2 fixedly connected to the upper end of the concave block, the telescopic shaft end of the electric push rod 2 is fixedly connected to a U-shaped block, the lower end of the U-shaped block is fixedly connected to a clamping block, the wall surface of the clamping block away from the electric push rod 2 is in contact with the side edge of the circuit substrate, an auxiliary clamping mechanism is provided between the clamping block and the concave block, and a downward pressing mechanism is provided on the clamping block.

[0006] Preferably, the transmission mechanism includes a slide groove and two electric push rods, the slide groove is opened at the upper end of the machine, the two electric push rods are symmetrically fixedly installed at the lower end of the machine, the telescopic shaft ends of the two electric push rods are fixedly connected with slides, the two slides are slidably matched with the slide groove, and the upper ends of the two slides are respectively fixedly connected to the lower ends of the two frames.

[0007] Preferably, the driving mechanism includes a motor, which is fixedly installed at one end of the square frame, and the output shaft end of the motor is fixedly connected to a bidirectional screw rod, which is rotatably installed in the inner walls at both ends of the square frame, and the outer wall of the bidirectional screw rod is symmetrically threaded with sliders, and the two sliders are slidably fitted between the upper and lower ends of the inner side of the square frame, and the upper ends of the two sliders are respectively fixedly connected to the lower ends of the two concave blocks.

[0008] Preferably, the auxiliary clamping mechanism includes a gear, an L-shaped tooth plate 1 and an L-shaped tooth plate 2, the gear is rotatably connected to the upper end of the concave block away from the electric push rod 2, the L-shaped tooth plate 2 is fixedly connected to the upper end of the clamping block away from the U-shaped block, the L-shaped tooth plate 1 is installed at the edge of the upper end of the concave block away from the electric push rod 2 through a sliding mechanism, the gear is located between the L-shaped tooth plate 1 and the L-shaped tooth plate 2, the L-shaped tooth plate 1 and the L-shaped tooth plate 2 are both meshed with the gear, and an elastic clamp assembly is provided on the vertical wall of the L-shaped tooth plate 1.

[0009] Preferably, the sliding mechanism includes a T-shaped slot and a T-shaped block, the T-shaped slot is opened at the upper end of the concave block corresponding to an L-shaped tooth plate, the T-shaped block is fixedly connected to the lower end of the L-shaped tooth plate, and the T-shaped block and the T-shaped slot are slidably matched.

[0010] Preferably, the elastic clamp assembly includes a square plate, which is fixedly connected to the vertical wall of the L-shaped tooth plate, and connecting rods are slidably inserted into the inner walls at the four corners of the square plate. The four connecting rods are commonly fixedly connected to an auxiliary clamping plate at one end close to the circuit substrate, and springs four are slidably sleeved on the outer walls of the four connecting rods. The four springs four are fixedly connected between the square plate and the auxiliary clamping plate, and the auxiliary clamping plate is close to the circuit substrate.

[0011] Preferably, the pressing mechanism includes a fixed block, which is fixedly connected to the wall of the clamping block away from the electric push rod 2 and close to the upper edge. A connecting column is slidably inserted into the inner wall of the fixed block. The upper and lower ends of the connecting column are respectively fixedly connected to a connecting plate and a splicing plate. A pressure plate is elastically connected to the bottom of the splicing plate through an elastic component. The lower end of the pressure plate is in contact with the upper edge of the circuit substrate. A linkage mechanism is provided between the connecting plate and the clamping block. A spring 1 is fixedly connected between the connecting plate and the fixed block, and the spring 1 is slidably sleeved on the outer wall of the connecting column.

[0012] Preferably, the elastic component includes two splicing columns, which are symmetrically slidably inserted into the inner wall of the splicing plate, and the lower ends of the two splicing columns are fixedly connected to the upper end of the pressure plate. Springs three are slidably sleeved on the outer walls of the two splicing columns, and the two springs three are fixedly connected between the pressure plate and the splicing plate.

[0013] Preferably, the linkage mechanism includes an L-shaped groove, a triangular block and a square groove, the L-shaped groove is opened on the inner wall of the clamping block, the inner wall of the L-shaped groove is fitted with an L-shaped plate, the vertical wall of the L-shaped plate is symmetrically fixedly connected with guide pillars, the ends of the two guide pillars away from the L-shaped plate are both movable and pass through the clamping block, the ends of the two guide pillars away from the L-shaped plate are both fixedly connected with a disc, and spring 2 is fixedly connected between the two discs and the clamping block, the two springs 2 are respectively slidably mounted on the outer walls of the two guide pillars, the square groove is opened at the upper edge of the inner wall of the L-shaped plate, the triangular block is fixedly connected to the upper end of the connecting plate corresponding to the square groove, the connecting plate slides through the square groove, and the inclined surface of the triangular block is fitted with the upper edge of the square groove.

[0014] Preferably, exhaust fans 2 are fixedly installed at the middle parts of the upper ends of the two square frames, and exhaust fans 1 are fixedly installed at the middle parts of the upper ends of the four concave blocks.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the cooperation of the square frame, transmission mechanism, driving mechanism, concave block, clamping mechanism and pressing mechanism, the laser etcher can firmly clamp circuit boards of different sizes from the upper edge and both side edges of the circuit board when etching the circuit pattern on the circuit board, and when the laser beam of the laser etching head etches the circuit pattern on the edge of the circuit board, the clamping part at each location can flexibly avoid the laser beam, and each clamping part can re-clamp the circuit board when the laser beam moves past, thereby ensuring the stability of the circuit board while avoiding high temperature damage to the clamping part, thereby avoiding affecting the etching of the circuit board.

[0016] 2. By setting up the auxiliary clamping mechanism, when the clamping part leaves the circuit board, the auxiliary clamping part will promptly supplement the clamping of the circuit board, so that the circuit board is always clamped evenly, so that the circuit board can be further clamped stably and the position accuracy of the circuit board can be further guaranteed. At the same time, the auxiliary clamping part can leave the circuit board when the clamping part moves back, and the auxiliary clamping part will not be affected by the laser beam.

[0017] 3. Through the cooperation between exhaust fan 2 and exhaust fan 1, when the laser etcher etches the circuit pattern on the circuit board, the smoke and dust generated can be evenly extracted from both sides, so that it will not float upward and interfere with the laser etching head, thereby avoiding affecting the etching quality of the circuit board. At the same time, the smoke and dust can be evenly extracted for circuit boards of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the square frame of the present invention; Figure 3 It is a structural schematic diagram of the concave block of the present invention; Figure 4 It is a cross-sectional view of the clamping block, L-shaped plate, triangular block, connecting plate, splicing plate and pressing plate of the present invention; Figure 5 It is a bottom view structural schematic diagram of one part of the L-shaped tooth plate of the present invention; Figure 6 It is a schematic diagram of the structure of the bidirectional screw rod of the present invention; Figure 7 It is a front view of the electric push rod 1 and the slide plate of the present invention.

[0019] In the attached drawings, the parts represented by the reference numerals are as follows: 1. laser etching head; 2. exhaust fan 1; 3. exhaust fan 2; 4. slideway; 5. machine table; 6. frame; 7. circuit board; 8. electric push rod 1; 9. electric push rod 2; 10. concave block; 11. motor; 12. slide block; 13. clamping block; 14. U-shaped block; 15. auxiliary clamping plate; 16. square plate; 17. gear; 18. L-shaped tooth plate 1; 19. L-shaped tooth plate Plate 2; 20, bidirectional screw; 21, L-shaped plate; 22, triangular block; 23, splicing plate; 24, pressure plate; 25, fixing block; 26, connecting plate; 27, square groove; 28, spring 1; 29, disc; 30, spring 2; 31, guide column; 32, L-shaped groove; 33, connecting column; 34, spring 3; 35, T-shaped groove; 36, splicing column; 37, T-shaped block; 38, connecting rod; 39, spring 4; 40, slide plate. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1: Please refer to Figure 1 - Figure 7A laser etching device for circuit board processing includes a machine table 5 and a laser etching head 1 installed on the machine table 5 through a gantry slide, the upper end of the machine table 5 is symmetrically bonded with a frame 6, the upper end of the machine table 5 is bonded with a circuit substrate 7 between two frames 6, a transmission mechanism is provided between the two frames 6 and the machine table 5, two concave blocks 10 are slidably provided on the upper ends of the two frames 6 through the driving mechanism, and a clamping mechanism is provided on the four concave blocks 10; The clamping mechanism includes an electric push rod 29 fixedly connected to the upper end of the concave block 10, the telescopic shaft end of the electric push rod 29 is fixedly connected to a U-shaped block 14, the lower end of the U-shaped block 14 is fixedly connected to a clamping block 13, the wall surface of the clamping block 13 away from the electric push rod 29 is in contact with the side edge of the circuit substrate 7, an auxiliary clamping mechanism is provided between the clamping block 13 and the concave block 10, and a pressing mechanism is provided on the clamping block 13.

[0022] The transmission mechanism includes a slide 4 and two electric push rods 8. The slide 4 is opened at the upper end of the machine 5. The two electric push rods 8 are symmetrically fixedly installed at the lower end of the machine 5. The telescopic shaft ends of the two electric push rods 8 are fixedly connected with a slide plate 40 (such as Figure 7 As shown in the figure, the two slide plates 40 are slidably matched with the slide groove 4, and the upper ends of the two slide plates 40 are fixedly connected to the lower ends of the two frames 6 respectively.

[0023] Specifically, starting the two electric push rods 8 can drive the respectively connected slides 40 to slide in the slide groove 4, and the two slides 40 are in a state of moving toward each other or moving away from each other, thereby driving the two frames 6 to slide toward each other or away from each other at the upper end of the machine table 5.

[0024] The driving mechanism includes a motor 11, which is fixedly mounted at one end of the frame 6, and a bidirectional screw rod 20 (such as Figure 6 As shown in the figure, the bidirectional screw rod 20 is rotatably installed in the inner walls at both ends of the square frame 6, and the outer wall of the bidirectional screw rod 20 is symmetrically threaded with a slider 12. The two sliders 12 are slidably fitted between the upper and lower ends of the inner side of the square frame 6, and the upper ends of the two sliders 12 are fixedly connected to the lower ends of the two concave blocks 10 respectively.

[0025] Specifically, starting the motor 11 can drive the bidirectional screw 20 to rotate, and the bidirectional screw 20 can drive the two sliders 12 to slide towards each other or away from each other on the inner side of the frame 6, which will then drive the corresponding two concave blocks 10 to slide towards each other or away from each other on the upper end surface of the frame 6.

[0026] The pressing mechanism includes a fixed block 25, which is fixedly connected to the wall of the clamping block 13 away from the electric push rod 29 and close to the upper edge. A connecting column 33 is slidably inserted into the inner wall of the fixed block 25. The upper and lower ends of the connecting column 33 are respectively fixedly connected to the connecting plate 26 and the splicing plate 23. The lower part of the splicing plate 23 is elastically connected to the pressing plate 24 through an elastic component. The lower end of the pressing plate 24 is in contact with the upper edge of the circuit substrate 7. A linkage mechanism is provided between the connecting plate 26 and the clamping block 13. A spring 28 is fixedly connected between the connecting plate 26 and the fixed block 25. The spring 28 is slidably sleeved on the outer wall of the connecting column 33.

[0027] The elastic component includes two splicing columns 36, which are symmetrically slidably inserted into the inner wall of the splicing plate 23. The lower ends of the two splicing columns 36 are fixedly connected to the upper end of the pressure plate 24. Springs three 34 are slidably sleeved on the outer walls of the two splicing columns 36. The two springs three 34 are fixedly connected between the pressure plate 24 and the splicing plate 23.

[0028] The linkage mechanism includes an L-shaped groove 32, a triangular block 22 and a square groove 27. The L-shaped groove 32 is provided on the inner wall of the clamping block 13. The inner wall of the L-shaped groove 32 is fitted with an L-shaped plate 21. The vertical wall of the L-shaped plate 21 is symmetrically fixedly connected with a guide column 31. The ends of the two guide columns 31 away from the L-shaped plate 21 are both movable and penetrate the clamping block 13. The ends of the two guide columns 31 away from the L-shaped plate 21 are both fixedly connected with a disc 29. A spring 2 30 is fixedly connected between the two discs 29 and the clamping block 13. The two springs 2 30 are respectively slidably sleeved on the outer walls of the two guide columns 31. The square groove 27 is provided at the upper edge of the inner wall of the L-shaped plate 21. The triangular block 22 is fixedly connected to the upper end of the connecting plate 26 corresponding to the square groove 27. The connecting plate 26 slides through the square groove 27, and the inclined surface of the triangular block 22 is fitted with the upper edge of the square groove 27.

[0029] In this embodiment, the two square frames 6 can be driven to move closer to each other through the transmission mechanism, and the two concave blocks 10 at the upper end of each square frame 6 can be driven to slide closer to each other or away from each other through the driving mechanism. Each concave block 10 is connected to the corresponding square frame 6, and each clamping block 13 is connected to the corresponding concave block 10. Then, the four clamping blocks 13 can clamp circuit substrates 7 of different sizes through the transmission mechanism and the driving mechanism, and the four clamping blocks 13 are respectively attached to the two sides of the circuit substrate 7 in pairs, and the four clamping blocks 13 are respectively close to the four corners of the circuit substrate 7, such as Figure 1 Then, the laser etching head 1 is started to etch the circuit pattern on the circuit substrate 7. The moving directions of the laser etching head 1 in the X-axis and the Y-axis are controlled by the gantry slide. This is a well-known prior art and will not be described in detail.

[0030] It should be noted that, when each clamping block 13 moves to contact the side of the circuit substrate 7, one end of the horizontal portion of the L-shaped plate 21 in the clamping block 13 initially extends out of the clamping block 13. Figure 4 From the perspective of FIG. 1 , when the clamping block 13 moves to fit the side of the circuit substrate 7, the L-shaped plate 21 will be squeezed and move inward in the L-shaped groove 32, and drive the two guide pillars 31 to slide outward in the clamping block 13, and the disc 29 outside the two guide pillars 31 will stretch the spring 2 30 connected to the clamping block 13, and the L-shaped plate 21 will also drive the upper edge of the square groove 27 to squeeze the inclined surface of the triangular block 22, and under the action of the squeezing force, the triangular block 22 moves downward and drives the connecting The connecting plate 26 moves downward, and the connecting plate 26 drives the connecting column 33 to slide downward in the fixing block 25, and the connecting plate 26 also squeezes the spring 1 28 connected to the fixing block 25, and the connecting column 33 drives the splicing plate 23, the two splicing columns 36, the two springs 34 and the pressing plate 24 to move downward together, and the pressing plate 24 is squeezed at the upper edge of the circuit substrate 7, and the splicing plate 23 squeezes the two springs 34, at this time, the horizontal wall of the L-shaped plate 21 will completely enter the L-shaped groove 32, and finally Figure 4 Under the action of the two springs 34, the pressing plate 24 can be prevented from excessively pressing the circuit substrate 7 and causing damage to the circuit substrate 7.

[0031] It should also be noted that, with the four clamping blocks 13 clamping the two sides of the circuit substrate 7 in pairs and the four pressing plates 24 applying pressure to the upper end of the circuit substrate 7, the circuit substrate 7 can be well stabilized and the position of the circuit substrate 7 can be well limited, thereby preventing the circuit substrate 7 from shifting.

[0032] Next, after the laser etching head 1 has completed etching the surface within the edge range of the circuit substrate 7, when it is still necessary to etch the edge of the circuit substrate 7, and when the laser beam emitted by the laser etching head 1 is close to one of the clamping blocks 13, the electric push rod 2 9 close to the clamping block 13 is started, and the electric push rod 2 9 can drive the U-shaped block 14 to move away from the circuit substrate 7, and the U-shaped block 14 can drive the clamping block 13 to move away from the circuit substrate 7. At this time, under the action of spring 1 28, spring 2 30 and spring 3 34, the pressure plate 24, L-shaped plate 21, connecting plate 26 and triangular block 22 will all be reset, and the clamping block 13 and the pressure plate 24 here will quickly move away from and release the circuit substrate 7, so that the laser etching head 1 can be avoided. The light beam is blocked by the pressure plate 24 here and is close to the pressure plate 24 and the clamp block 13. When the laser beam of the laser etching head 1 leaves the pressure plate 24 and the clamp block 13, the electric push rod 29 can be used to drive the pressure plate 24 and the clamp block 13 to clamp and press the circuit substrate 7 again. The same is true for the pressure plates 24 and the clamp blocks 13 at other positions. Then, when etching the circuit pattern on the edge of the circuit substrate 7, the high temperature generated by the laser beam emitted by the laser etching head 1 when it is working on the circuit substrate 7 will not damage the clamping part (the clamping part, namely the pressure plate 24 and the clamp block 13) that clamps the circuit substrate 7. The clamping part will flexibly avoid the laser beam and wait for the laser beam to move past to fix the circuit substrate 7 again, thereby avoiding affecting the etching of the circuit substrate 7.

[0033] Example 2: Please refer to Figure 2 , Figure 3 and Figure 5 The present embodiment further explains the first embodiment, the auxiliary clamping mechanism includes a gear 17, an L-shaped tooth plate 18 and an L-shaped tooth plate 2 19, the gear 17 is rotatably connected to the upper end of the concave block 10 away from the electric push rod 29, the L-shaped tooth plate 2 19 is fixedly connected to the upper end of the clamping block 13 away from the U-shaped block 14, the L-shaped tooth plate 18 is installed at the edge of the upper end of the concave block 10 away from the electric push rod 29 through a sliding mechanism, the gear 17 is located between the L-shaped tooth plate 18 and the L-shaped tooth plate 2 19, the L-shaped tooth plate 18 and the L-shaped tooth plate 2 19 are both meshed with the gear 17, and an elastic clamping assembly is provided on the vertical wall of the L-shaped tooth plate 18.

[0034] The sliding mechanism includes a T-shaped slot 35 and a T-shaped block 37. The T-shaped slot 35 (such as Figure 6 As shown in the figure, a T-shaped block 37 is provided at the upper end of the concave block 10 corresponding to the L-shaped tooth plate 18, and a T-shaped block 37 is fixedly connected to the lower end of the L-shaped tooth plate 18, and the T-shaped block 37 and the T-shaped groove 35 are slidably matched.

[0035] Specifically, by providing the T-shaped groove 35 and the T-shaped block 37 , the L-shaped tooth plate 18 can slide on the upper end of the concave block 10 , and the L-shaped tooth plate 18 will not be separated from the concave block 10 .

[0036] The elastic clamp assembly includes a square plate 16, which is fixedly connected to the vertical wall of an L-shaped toothed plate 18. Connecting rods 38 are slidably inserted into the inner walls at the four corners of the square plate 16. The four connecting rods 38 are commonly fixedly connected to an auxiliary clamping plate 15 at one end close to the circuit substrate 7. Springs 4 39 are slidably sleeved on the outer walls of the four connecting rods 38. The four springs 4 39 are fixedly connected between the square plate 16 and the auxiliary clamping plate 15. The auxiliary clamping plate 15 is close to the circuit substrate 7.

[0037] In this embodiment, when each clamping block 13 moves away from the circuit substrate 7 to move away from the laser beam, it will also drive the L-shaped toothed plate 2 19 to move together, the L-shaped toothed plate 2 19 will drive the gear 17 to rotate, the gear 17 will drive the L-shaped toothed plate 1 18 to move toward the circuit substrate 7, the L-shaped toothed plate 1 18 will drive the square plate 16, the four connecting rods 38, the auxiliary clamping plate 15 and the four springs 4 39 to move toward the circuit substrate 7, the auxiliary clamping plate 15 will squeeze the side of the circuit substrate 7, the square plate 16 will squeeze the four springs 4 39, wherein under the action of the four springs 4 39, the auxiliary clamping plate 15 can be prevented from excessively squeezing the circuit substrate 7 and causing damage to the circuit substrate 7. Then, when each clamping block 13 avoiding the laser beam leaves the circuit substrate 7, the auxiliary clamping plate 15 will promptly supplement the fixation of the circuit substrate 7, so that the circuit substrate 7 is always uniformly clamped during the process of etching the circuit pattern, so that the circuit substrate 7 can be further kept stably clamped, and the accuracy of the position of the circuit substrate 7 can be further guaranteed.

[0038] On the contrary, when each clamping block 13 moves closer to the circuit substrate 7 to re-clamp the circuit substrate 7 , the auxiliary clamping plate 15 will also move away from the circuit substrate 7 , and the auxiliary clamping plate 15 will be prevented from being affected by the laser beam of the laser etching head 1 .

[0039] Example 3: Please refer to Figure 1 and Figure 2 This embodiment further illustrates the first embodiment, the middle parts of the upper ends of the two square frames 6 are fixedly installed with exhaust fans 2 3, and the middle parts of the upper ends of the four concave blocks 10 are fixedly installed with exhaust fans 1 2.

[0040] In this embodiment, the exhaust ends of the two exhaust fans 2 3 and the four exhaust fans 1 2 can be connected to the pipeline, and the pipeline can be connected to the smoke purifier. When the two exhaust fans 2 3 and the four exhaust fans 1 2 are started, since two of the exhaust fans 1 2 and one of the exhaust fans 2 3 are located on one side of the circuit substrate 7, and the other two exhaust fans 1 2 and the other exhaust fan 2 3 are located on the other side of the circuit substrate 7, the smoke generated by the laser etching head 1 when etching the circuit substrate 7 will be evenly extracted from both sides of the circuit substrate 7, so that it will not float upward and interfere with the laser etching head 1, thereby avoiding affecting the etching quality of the circuit substrate 7.

[0041] It is worth mentioning that the four exhaust fans 2 are respectively connected to the four concave blocks 10. Since the four concave blocks 10 can be moved in the X-axis direction and the Y-axis direction through the transmission mechanism and the driving mechanism, the four exhaust fans 2 can also move accordingly. Therefore, when fixing the circuit substrates 7 of different sizes, among the two exhaust fans 2 and one exhaust fan 2 3 on each side, the exhaust fan 2 3 is always in the middle position relative to the circuit substrate 7, and the two exhaust fans 2 are always in the edge positions on both sides relative to the circuit substrate 7. Therefore, the circuit substrates 7 of different sizes can be optimally and evenly extracted for smoke.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] 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 etching device for processing a circuit board, comprising a machine platform (5) and a laser etching head (1) mounted above the machine platform (5) via a gantry slide, characterized in that: The upper end of the machine table (5) is symmetrically bonded with a square frame (6), and a circuit substrate (7) is bonded to the upper end of the machine table (5) between the two square frames (6). A transmission mechanism is provided between the two square frames (6) and the machine table (5), and two concave blocks (10) are slidably provided at the upper ends of the two square frames (6) through the driving mechanism, and a clamping mechanism is provided on each of the four concave blocks (10); The clamping mechanism comprises an electric push rod 2 (9) fixedly connected to the upper end of the concave block (10), the telescopic shaft end of the electric push rod 2 (9) is fixedly connected to a U-shaped block (14), the lower end of the U-shaped block (14) is fixedly connected to a clamping block (13), the wall surface of the clamping block (13) away from the electric push rod 2 (9) is in contact with the side edge of the circuit substrate (7), an auxiliary clamping mechanism is provided between the clamping block (13) and the concave block (10), and a pressing mechanism is provided on the clamping block (13).

2. A laser etching device for circuit board processing according to claim 1, characterized in that: The transmission mechanism comprises a slide groove (4) and two electric push rods (8); the slide groove (4) is provided at the upper end of the machine platform (5); the two electric push rods (8) are symmetrically fixedly mounted at the lower end of the machine platform (5); the telescopic shaft ends of the two electric push rods (8) are fixedly connected with a slide plate (40); the two slide plates (40) are slidably matched with the slide groove (4); and the upper ends of the two slide plates (40) are respectively fixedly connected to the lower ends of the two frames (6).

3. The laser etching device for circuit board processing according to claim 1, characterized in that: The driving mechanism comprises a motor (11), the motor (11) being fixedly mounted on one end of the square frame (6), the output shaft end of the motor (11) being fixedly connected to a bidirectional screw rod (20), the bidirectional screw rod (20) being rotatably mounted through the inner walls at both ends of the square frame (6), the outer wall of the bidirectional screw rod (20) being symmetrically threaded with sliders (12), the two sliders (12) both being slidably fitted between the upper and lower ends of the inner side of the square frame (6), and the upper ends of the two sliders (12) being fixedly connected to the lower ends of the two concave blocks (10) respectively.

4. The laser etching device for circuit board processing according to claim 1, characterized in that: The auxiliary clamping mechanism comprises a gear (17), an L-shaped toothed plate 1 (18) and an L-shaped toothed plate 2 (19); the gear (17) is rotatably connected to the upper end of the concave block (10) away from the electric push rod 2 (9); the L-shaped toothed plate 2 (19) is fixedly connected to the upper end of the clamping block (13) away from the U-shaped block (14); the L-shaped toothed plate 1 (18) is installed at the edge of the upper end of the concave block (10) away from the electric push rod 2 (9) through a sliding mechanism; the gear (17) is located between the L-shaped toothed plate 1 (18) and the L-shaped toothed plate 2 (19); the L-shaped toothed plate 1 (18) and the L-shaped toothed plate 2 (19) are both meshed with the gear (17); and an elastic clamping assembly is provided on the vertical wall of the L-shaped toothed plate 1 (18).

5. The laser etching device for circuit board processing according to claim 4, characterized in that: The sliding mechanism comprises a T-shaped slot (35) and a T-shaped block (37); the T-shaped slot (35) is provided at the upper end of the concave block (10) corresponding to the L-shaped tooth plate (18); the T-shaped block (37) is fixedly connected to the lower end of the L-shaped tooth plate (18); the T-shaped block (37) and the T-shaped slot (35) are slidably matched.

6. The laser etching device for circuit board processing according to claim 4, characterized in that: The elastic clamp assembly comprises a square plate (16), wherein the square plate (16) is fixedly connected to the vertical wall of an L-shaped toothed plate (18), and connecting rods (38) are slidably inserted into the inner walls at the four corners of the square plate (16), and one end of the four connecting rods (38) close to the circuit substrate (7) is commonly fixedly connected to an auxiliary clamping plate (15), and springs (39) are slidably sleeved on the outer walls of the four connecting rods (38), and the four springs (39) are fixedly connected between the square plate (16) and the auxiliary clamping plate (15), and the auxiliary clamping plate (15) is close to the circuit substrate (7).

7. The laser etching device for circuit board processing according to claim 1, characterized in that: The pressing mechanism comprises a fixed block (25), the fixed block (25) being fixedly connected to a wall surface of the clamping block (13) away from the second electric push rod (9) and close to the upper edge, the inner wall of the fixed block (25) being slidably interspersed with a connecting column (33), the upper and lower ends of the connecting column (33) being respectively fixedly connected to a connecting plate (26) and a splicing plate (23), the lower part of the splicing plate (23) being elastically connected to a pressing plate (24) through an elastic component, the lower end of the pressing plate (24) being in contact with the upper edge of the circuit substrate (7), a linkage mechanism being provided between the connecting plate (26) and the clamping block (13), a spring 1 (28) being fixedly connected between the connecting plate (26) and the fixed block (25), the spring 1 (28) being slidably sleeved on the outer wall of the connecting column (33).

8. The laser etching device for circuit board processing according to claim 7, characterized in that: The elastic component comprises two splicing columns (36), the two splicing columns (36) are symmetrically slidably inserted into the inner wall of the splicing plate (23), the lower ends of the two splicing columns (36) are fixedly connected to the upper end of the pressure plate (24), and springs (34) are slidably sleeved on the outer walls of the two splicing columns (36), and the two springs (34) are fixedly connected between the pressure plate (24) and the splicing plate (23).

9. The laser etching device for circuit board processing according to claim 7, characterized in that: The linkage mechanism comprises an L-shaped groove (32), a triangular block (22) and a square groove (27); the L-shaped groove (32) is formed on the inner wall of the clamping block (13); the inner wall of the L-shaped groove (32) is fitted with an L-shaped plate (21); the vertical wall of the L-shaped plate (21) is symmetrically fixedly connected with guide pillars (31); one end of the two guide pillars (31) away from the L-shaped plate (21) is movably penetrated through the clamping block (13); one end of the two guide pillars (31) away from the L-shaped plate (21) is fixedly connected with a disc (29); A spring 2 (30) is fixedly connected between the two discs (29) and the clamping block (13). The two springs 2 (30) are respectively slidably sleeved on the outer walls of the two guide pillars (31). The square groove (27) is opened at the upper edge of the inner wall of the L-shaped plate (21). The triangular block (22) is fixedly connected to the upper end of the connecting plate (26) corresponding to the square groove (27). The connecting plate (26) slides through the square groove (27). The inclined surface of the triangular block (22) is in contact with the upper edge of the square groove (27).

10. The laser etching device for circuit board processing according to claim 1, characterized in that: The middle parts of the upper ends of the two square frames (6) are fixedly mounted with exhaust fans 2 (3), and the middle parts of the upper ends of the four concave blocks (10) are fixedly mounted with exhaust fans 1 (2).

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