Laser marking machine for circuit board production

Abstract

The utility model relates to a laser marking machine, in particular to a laser marking machine for circuit board production. The laser marking machine for circuit board production comprises a base, a fixing plate, a mounting base, a laser marking machine body, a visual probe, an aperture and the like. A fixing plate is welded to the upper portion of the base and fixedly connected with a mounting seat, a laser marking machine is mounted on the inner side of the mounting seat, a visual probe is mounted on the lower portion of the mounting seat, and an aperture is fixedly connected to the lower portion of the fixing plate. According to the utility model, circuit boards are continuously placed and conveyed on the feeding device, and meanwhile, automatic positioning and marking are realized through accurate positioning of the visual probe and intermittent feeding of the feeding device.

Description

Technical Field

[0001] The utility model relates to a laser marking machine, in particular to a laser marking machine for circuit board production. Background Art

[0002] With the booming development of the IT industry, products such as smart phones and wearable electronics are continuously developing towards being thinner, lighter and smaller. Consumers' requirements for electronic products are also getting higher and higher, and the production of PCB boards must also be refined. To achieve quality control in the production process of PCB boards, marking characters, one-dimensional codes, two-dimensional codes and other information on the PCB boards for traceability has become a development trend in the industry. Due to problems such as poor wear resistance, low precision, poor aesthetics and environmental pollution, traditional printing technology is increasingly unable to meet the new market and technological requirements. Therefore, laser marking has become a trend in the PCB industry.

[0003] A Chinese patent with the publication number CN212665211U discloses a laser marking machine for PCB circuit boards, including a marking machine main body. One side of the marking machine main body is fixedly connected with a mounting rod. A light-shielding plate is sleeved on the surface of the mounting rod. A slide rail is arranged on one side of the light-shielding plate. A placement rack is slidably connected inside the slide rail. A crystal plate placement groove is formed on the surface of the placement rack. One side of the bottom of the marking machine main body is fixedly connected with a support frame. One side of the support frame is fixedly connected with a support rod. One side of the support rod is fixedly connected with a push rod. The bottom of the support frame is fixedly connected with a moving vehicle body. The top of the moving vehicle body is fixedly connected with a crystal plate placement box. The device has a simple structure and is easy to install, which is beneficial to the operation of staff, convenient for staff to move the device, convenient for use according to usage requirements, convenient for maintenance and repair, and beneficial to improving the applicable range of the device. However, in actual use, when laser marking, staff need to manually place and take the circuit board, which will lead to instability of production output and insufficient production efficiency. Moreover, since manual feeding requires precise control of the amount and position of feeding, but the skill levels and experiences of personnel are different, errors often occur. Summary of the Utility Model

[0004] In order to overcome the shortcomings that when the existing device is used for laser marking, staff need to manually place and take the circuit board, which will lead to instability of production output and insufficient production efficiency, and since manual feeding requires precise control of the amount and position of feeding, but the skill levels and experiences of personnel are different, errors often occur, the purpose is to provide a laser marking machine for circuit board production that can achieve automatic positioning marking, does not require manual plate taking and placing, ensures precise positioning, and the marking position meets the requirements.

[0005] The technical implementation solution of the present utility model is: a laser marking machine for circuit board production, which includes a base, a fixing plate, a mounting seat, a laser marking machine, a vision probe, a feeding device and an aperture. The upper part of the base is welded with a fixing plate, and the fixing plate is fixedly connected with a mounting seat. The laser marking machine is installed inside the mounting seat, and the vision probe is installed at the lower part of the mounting seat. The aperture is fixedly connected to the lower part of the fixing plate. The feeding device is inclinedly installed inside the base. The feeding device is composed of a frame, two sets of synchronous belt groups, two connecting rotating shafts and a driving motor. The output shaft of the driving motor is fixedly connected to the rear part of the right connecting rotating shaft. The feeding device, the laser marking machine and the aperture have the same inclination angle, and the optical lens of the vision probe faces the feeding device.

[0006] Optionally, it further includes a radiator and copper pipes. The radiator is installed at the front part of the mounting seat, and the left and right sides of the radiator are connected and communicated with copper pipes, and the copper pipes penetrate into the mounting seat.

[0007] Optionally, it further includes a smoke extractor, a suction head and a connecting pipe. The smoke extractor is installed inside the lower part of the base, the suction head is installed in the middle of the base, and the suction head is connected and communicated with the smoke extractor through the connecting pipe. The opening of the suction head faces the feeding device, and the suction head and the laser marking machine are on the same vertical line.

[0008] Optionally, it further includes a connecting block and a circuit board washing machine. The left side of the base is fixedly connected with a connecting block, and the lower part of the connecting block is fixedly connected with a circuit board washing machine. The circuit board washing machine has the same inclination angle as the feeding device, and one side of the bottom of the circuit board washing machine contacts the frame of the feeding device.

[0009] Optionally, it further includes a connecting plate, and the connecting plate is installed on the feeding device.

[0010] Compared with the prior art, the present utility model has the following advantages: The present utility model continuously places and conveys the circuit board on the feeding device, and at the same time, through the precise positioning of the vision probe and the intermittent feeding of the feeding device, automatic positioning and marking are realized. Without manual plate taking and placing, the positioning is accurate and the marking position meets the requirements.

[0011] The present utility model cleans the dirt on the board surface to a certain extent by the contact between the circuit board surface and the circuit board washing machine, reducing the influence of the dirt remaining on the board surface on the laser marking pattern and character printing imaging.

[0012] The present utility model cools the laser marking machine by circulating the cooling liquid of the radiator through the radiator and the copper pipes connected to the fixed seat, ensuring its normal operation at a constant temperature or a set temperature, avoiding its own inability to dissipate heat and the too high temperature affecting the normal operation of the laser generator, thus being easily damaged, and effectively extending the service life of the laser.

[0013] The present utility model sucks away a large amount of harmful smoke generated by laser etching by the smoke extractor, avoiding its dissipation in the air and causing harm to the human body. Brief Description of the Drawings

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the first type of the present utility model.

[0015] Figure 2 This is a three-dimensional structural schematic diagram of the second type of the present utility model.

[0016] Figure 3 This is a three-dimensional structural schematic diagram of components such as the mounting base, laser marking machine, and radiator of the present utility model.

[0017] Figure 4 This is a three-dimensional structural schematic diagram of the radiator and copper pipe of the present utility model.

[0018] The meanings of the reference numerals in the drawings: 1: base, 2: fixing plate, 3: mounting base, 4: laser marking machine, 5: radiator, 6: copper pipe, 7: vision probe, 71: feeding device, 72: connecting plate, 8: aperture, 9: fume extractor, 10: suction head, 11: connecting pipe, 12: connecting block, 13: circuit board washer. Detailed Description of the Embodiment

[0019] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings. It is hereby declared that the orientation terms such as up, down, left, right, front, back, inside, and outside that appear or will appear in the text of the present utility model are only based on the drawings of the present utility model, and they do not specifically limit the present utility model.

[0020] Example 1: The produced laser marking machine, such as Figures 1-4As shown in the figure, it includes a base 1, a fixing plate 2, a mounting seat 3, a laser marking machine 4, a vision probe 7, a feeding device 71 and an aperture 8. The upper part of the base 1 is welded with the fixing plate 2. The fixing plate 2 is fixedly connected with the mounting seat 3. The laser marking machine 4 is installed inside the mounting seat 3. The laser marking machine 4 will irradiate and etch the character pattern to be printed on the circuit board through a laser beam. The vision probe 7 is installed at the lower part of the mounting seat 3. When the vision probe 7 detects that the circuit board is transported to the position to be printed under the laser marking machine 4, it will feedback a signal. The laser marking machine 4 performs laser printing on the upper surface of the circuit board through the feedback signal. The aperture 8 is fixedly connected to the lower part of the fixing plate 2. The feeding device 71 is inclinedly installed inside the base 1. The feeding device 71 is composed of a frame, two synchronous belt groups, two connecting rotating shafts and a driving motor. The output shaft of the driving motor is fixedly connected to the rear part of the right connecting rotating shaft. The feeding device 71, the laser marking machine 4 and the aperture 8 have the same inclination angle. The optical lens of the vision probe 7 faces the feeding device 71. When the circuit board is transported to the predetermined printing position, the vision probe 7 will feedback the signal to the feeding device 71, and the driving motor of the feeding device 71 will control the synchronous belt group to stop feeding.

[0021] When laser marking is required for the circuit board, the circuit board is placed obliquely on the feeding device 71, and at the same time, the driving motor on the feeding device 71 is started. The driving motor drives the synchronous belt on the feeding device 71 to rotate rightward for feeding. The circuit board is transported to the right. When the vision probe 7 detects that the circuit board is transported to the position directly below the laser marking machine 4, and the laser emitted by the laser marking machine 4 will irradiate on the position where the pattern or text needs to be printed on the circuit board, the driving motor will stop rotating, and the circuit board will stop below the laser marking machine 4. At this time, the laser marking machine 4 will automatically perform laser marking on the upper surface of the stopped circuit board nest, engraving the characters and patterns to be marked on the surface of the object. The aperture 8 below the laser marking machine 4 can emit light with higher brightness, which is convenient for the vision probe 7 to perform positioning scanning on the circuit board. When the marking is completed, the driving motor continues to rotate, and the circuit board is transported to the right for blanking. By continuously placing and transporting the circuit board on the feeding device 71, and at the same time, through the precise positioning of the vision probe 7 and the intermittent feeding of the feeding device 71, automatic positioning marking is realized. Without manual plate taking and placing, the positioning is accurate and the marking position meets the requirements.

[0022] Embodiment 2: On the basis of Embodiment 1, as Figure 1 、 Figure 3 and Figure 4 shown, it further includes a radiator 5 and a copper tube 6. The radiator 5 is installed at the front part of the mounting seat 3. The radiator 5 is composed of a housing and a circulation pump. There is a cooling liquid stored in the housing. The left and right sides of the radiator 5 are connected and communicated with the copper tube 6. The copper tube 6 penetrates into the mounting seat 3 and is arranged at equal intervals in the front, left and right sides of the mounting seat 3, wrapping the laser marking machine 4.

[0023] As Figure 1 and Figure 2 shown, it further includes a fume extractor 9, a suction head 10 and a connecting pipe 11. The fume extractor 9 is installed inside the lower part of the base 1, the suction head 10 is installed in the middle of the base 1, and the suction head 10 is connected and communicated with the fume extractor 9 through the connecting pipe 11. The opening of the suction head 10 faces the feeding device 71, and the suction head 10 and the laser marking machine 4 are on the same vertical line. When the fume extractor 9 works, a large suction force will be generated at the suction head 10 to suck away the fumes generated when the laser beam etches the circuit board, and the fume extractor 9 can filter the inhaled fumes to a certain extent and then discharge them.

[0024] As Figure 1 and Figure 2 shown, it further includes a connecting block 12 and a circuit board washer 13. The connecting block 12 is fixedly connected to the left side of the base 1, and the circuit board washer 13 is fixedly connected to the lower part of the connecting block 12. The circuit board washer consists of a housing, a motor and a sponge block connected to the motor. There is a circuit board washing liquid in the housing of the circuit board washer 13. The lower part of the circuit board washer 13 is a sponge block that can move left and right with the motor. When the sponge block transports the circuit board on the feeding device 71, it will contact the upper side of the circuit board to clean the circuit board to a certain extent. The liquid in the circuit board washer 13 will slowly soak into the sponge block. When the sponge block moves and scrubs, it will smear the cleaning liquid on the circuit board to improve the cleanliness of the cleaning. The circuit board washer 13 and the feeding device 71 have the same inclination angle, and one side of the bottom of the circuit board washer 13 contacts the frame of the feeding device 71.

[0025] As Figure 1 shown, it further includes a connecting plate 72. The connecting plate 72 is fixedly installed on the feeding device 71 to prevent the circuit board in transmission from falling during the transportation of the circuit board.

[0026] When a circuit board is placed on the left part of the feeding device 71 and is conveyed to the right, the surface of the circuit board will contact the sponge at the lower part of the circuit board washer 13. The circuit board washing liquid agent in the circuit board washer 13 will soak into the sponge, and through the contact between the surface of the circuit board and the sponge, the dirt on the board surface will be cleaned to a certain extent, reducing the influence of the dirt remaining on the board surface on the laser marking pattern and character printing imaging. When the cleaned circuit board continues to be conveyed to the right, the circuit board will enter the space within the connecting plate 72 and the feeding device 71. The connecting plate 72 can effectively prevent the circuit board from falling, and can effectively avoid the material from falling or being damaged during the conveying process, ensuring that the material is conveyed to the designated position. When the circuit board moves to the vacancy under the connecting plate 72, the vision probe 7 will perform positioning scanning on the circuit board, and the laser marking machine 4 will perform printing on the circuit board after positioning. During the working process of the laser of the laser marking machine 4, heat will be continuously generated, but it cannot dissipate heat by itself. If the temperature is too high, it will affect the normal operation of the laser generator and is thus easily damaged. Therefore, in order to extend the service life of the laser, the cooling liquid of the radiator 5 is circulated through the radiator 5 and the copper pipe 6 connected to the fixed seat to cool the laser marking machine 4, ensuring its normal operation at a constant temperature or a set temperature. At the same time, during laser printing, a large amount of harmful fumes will be generated by laser etching. At this time, the fume extractor 9 is started, and the fume extractor 9 will generate a suction force to suck away the fumes at the suction head 10 through the connecting pipe 11. When the laser marking machine 4 is working, the fumes will be sucked away to avoid their dispersion in the air and causing harm to the human body. When the circuit board printing is completed, the circuit board is conveyed and discharged through the feeding device 71.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes may be made therein without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser marking machine for circuit board production, comprising a base (1), a fixing plate (2), a mounting seat (3), and a laser marking machine (4). The upper part of the base (1) is welded with the fixing plate (2), the fixing plate (2) is fixedly connected with the mounting seat (3), and the laser marking machine (4) is installed inside the mounting seat (3). It is characterized in that: It further comprises a vision probe (7), a feeding device (71), and an aperture (8). The vision probe (7) is installed at the lower part of the mounting seat (3), the aperture (8) is fixedly connected to the lower part of the fixing plate (2), and the feeding device (71) is inclinedly installed inside the base (1). The feeding device (71) is composed of a frame, two groups of synchronous belt groups, two connecting rotating shafts, and a driving motor. The output shaft of the driving motor is fixedly connected to the rear part of the right connecting rotating shaft. The feeding device (71), the laser marking machine (4), and the aperture (8) have the same inclination angle, and the optical lens of the vision probe (7) faces the feeding device (71).

2. The laser marking machine for circuit board production according to claim 1, characterized in that: It further comprises a radiator (5) and a copper pipe (6). The radiator (5) is installed at the front part of the mounting seat (3), and the left and right sides of the radiator (5) are connected and communicated with the copper pipe (6), and the copper pipe (6) penetrates into the mounting seat (3).

3. The laser marking machine for circuit board production according to claim 2, characterized in that: It further comprises a smoke extractor (9), a suction head (10), and a connecting pipe (11). The smoke extractor (9) is installed inside the lower part of the base (1), the suction head (10) is installed in the middle of the base (1), the suction head (10) is connected and communicated with the smoke extractor (9) through the connecting pipe (11), the opening of the suction head (10) faces the feeding device (71), and the suction head (10) and the laser marking machine (4) are on the same vertical line.

4. The laser marking machine for circuit board production according to claim 3, characterized in that: It further comprises a connecting block (12) and a circuit board washer (13). The connecting block (12) is fixedly connected to the left side of the base (1), the circuit board washer (13) is fixedly connected to the lower part of the connecting block (12), the circuit board washer (13) has the same inclination angle as the feeding device (71), and the bottom surface of the circuit board washer (13) is in contact with the frame of the feeding device (71).

5. A laser marking machine for circuit board production according to claim 4, characterized in that: It further comprises a connecting plate (72), and the connecting plate (72) is installed on the feeding device (71).

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