Circuit board laser marking auxiliary positioning device

Abstract

The invention relates to the related technical field of circuit board laser marking, in particular to a circuit board laser marking auxiliary positioning device which comprises a processing box body, a laser frame and a laser marking machine, a processing table is arranged at the position, located at the bottom of the laser marking machine, of the processing box body, and a connecting rod positioning assembly is arranged at the top of the processing table; the connecting rod positioning assembly is used for positioning and clamping the periphery of the circuit board, the connecting rod positioning assembly further comprises a positioning block and a square rotating plate, and a discharging cleaning assembly is arranged at the bottom of the positioning block. The rotation of the square rotating plate can synchronously pull the four limiting sliding blocks and the positioning blocks on the limiting sliding blocks to strictly move towards the direction of the center shaft of the mechanism along the guide rails of the limiting sliding blocks, precise synchronous gathering movement is formed, the periphery of a circuit board is evenly and stably clamped, the circuit board is cleaned before and after positioning, and the marking quality of the circuit board is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board laser marking, in particular to a circuit board laser marking auxiliary positioning device. BACKGROUND

[0002] The circuit board is also called ceramic circuit board, PCB board, circuit board, printed circuit board and the like. The circuit board makes the circuit miniaturized and intuitive, and plays an important role in batch production of fixed circuits and optimization of electrical appliance layout. Laser marking is a marking method that uses high-energy-density laser to locally irradiate the surface of the circuit board, so that the surface layer material is vaporized or a color change chemical reaction occurs, thereby leaving a permanent mark.

[0003] At present, in the laser marking processing process, the single-direction clamping positioning is unstable, and a slight deviation may occur. In addition, due to the high concentration of laser energy, it is like a powerful energy storm that bursts out instantaneously, which can make the flexible circuit board material vaporize and melt instantaneously, and further generate a large amount of debris and dust. These debris and dust are like hidden destroyers. If they cannot be removed in time and effectively, they will scatter at will, and the debris and dust will re-deposit on other parts of the marked circuit board, which will affect the subsequent circuit board processing and cause instability, and even the port contact of the circuit board will be poor. In addition, impurities may adhere to the circuit board before laser marking. The adhered impurities may also scatter during the laser marking process, which reduces the quality of the laser marking of the circuit board. Therefore, the workshop workers need to clean the circuit board before and after marking by using an air gun. This process increases the labor intensity of the workshop workers and reduces the production efficiency. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a circuit board laser marking auxiliary positioning device.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a circuit board laser marking auxiliary positioning device, comprising a processing box, a laser frame installed on the top of the processing box, and a laser marking machine installed on the laser frame. The processing box is provided with a processing table at the bottom of the laser marking machine. The top of the processing table is provided with a connecting rod positioning assembly. The connecting rod positioning assembly is used for positioning and clamping the circuit board around. The S-shaped clamping plate in the connecting rod positioning assembly is synchronously linked to centrally limit and clamp the four sides of the circuit board. The connecting rod positioning assembly further comprises a positioning block and a square rotating plate. The bottom of the positioning block is provided with a discharging and cleaning assembly. The discharging and cleaning assembly is used for blowing and cleaning the marked circuit board. When the positioning block drives the S-shaped clamping plate to release the limit of the circuit board, it synchronously drives the discharging piston plate in the discharging and cleaning assembly to cooperate with the discharging cylinder to blow and clean the marked circuit board. The inside of the processing table is movably provided with a movable disc, the top of the movable disc is provided with a scraping and top material feeding assembly, the scraping and top material feeding assembly comprises a cleaning brush for scraping and collecting scraps of the processing table and an arc-shaped top rod for lifting and feeding the circuit board after marking, and the bottom of the movable disc is further provided with a feeding and cleaning assembly, the feeding and cleaning assembly is used for blowing and cleaning the circuit board before marking, and when the positioning block drives the S-shaped clamping plate to limit and hold the circuit board, the feeding and cleaning assembly is synchronously driven to cooperate with the feeding cylinder to blow and clean the circuit board before marking.

[0006] As a preferred technical scheme of the present application, the laser frame is further provided with a folding display screen and a controller, a servo motor for driving a square rotating plate to rotate is fixedly installed at the bottom of the processing table, the connecting rod positioning assembly further comprises an L-shaped connecting rod, a fixed plate is fixedly installed inside the processing table, limit guides are fixedly installed around the top of the fixed plate, limit sliders are slidably connected to the limit guides, the positioning blocks are fixedly installed on the limit sliders, a square rotating plate is movably arranged at the top center of the fixed plate, L-shaped connecting rods are movably connected between the bottom corners of the square rotating plate and the positioning blocks, a screw rod is fixedly installed at the output end of the servo motor and penetrates through the fixed plate and is installed at the bottom center of the square rotating plate.

[0007] L-shaped positioning rods are fixedly installed at the two ends of the top of the positioning block, the top of the L-shaped positioning rod penetrates and extends to the top outside of the processing table, S-shaped clamping plates are fixedly installed at the top ends of the L-shaped positioning rods, and positioning grooves that are matched with the L-shaped positioning rods in size are formed around the top of the processing table and the L-shaped positioning rods movably penetrate in the positioning grooves.

[0008] As a preferred technical scheme of the present application, the feeding and cleaning assembly further comprises a feeding piston rod and a feeding nozzle, a feeding cylinder is fixedly installed around the fixed plate and is located at the bottom side of the positioning block, connecting plates are fixedly installed at the bottom of the positioning block, the feeding piston rod is fixedly installed on one side of the connecting plate away from the square rotating plate, the feeding piston plate movably exists in the inside of the feeding cylinder, the feeding piston rod penetrates and extends to the inside of the feeding cylinder and is fixedly installed on the feeding piston plate, and the fixed plate is provided with connecting openings that are matched with the connecting plates in size around the fixed plate and the connecting plates movably exist in the connecting openings.

[0009] The S-shaped clamping plate is fixedly installed with a feeding and cleaning seat at the top of one side away from the square rotating plate, a plurality of feeding nozzles are uniformly installed on one side of the feeding and cleaning seat close to the square rotating plate, the feeding nozzles are located at the top groove of the S-shaped clamping plate, and the feeding cylinder is fixedly installed with an air inlet pipe and an air outlet pipe at one end away from the square rotating plate and the air outlet pipe is connected to the feeding and cleaning seat.

[0010] As a preferred technical scheme of the present application, the scraping and top material feeding assembly further comprises a cleaning storage disc and a limiting cylinder, a storage hole is formed in the top center of the processing table, a fixed disc with a collecting hole is movably arranged on the top of the storage hole, the fixed disc is located on the same horizontal plane as the processing table, a rotating rod is fixedly installed at the top center of the square rotating plate, the cleaning storage disc is fixedly installed at the top end of the rotating rod, a triangular cleaning brush is fixedly installed at the bottom of the cleaning storage disc, and the triangular cleaning brush movably abuts against the bottom of the fixed disc.

[0011] The processing table is uniformly provided with a plurality of ejection holes at the outer periphery of the storage hole, a limiting cylinder is fixedly installed at the bottom of the ejection hole in the top of the processing table, an active disc is threadedly connected to the bottom of the fixed plate on the screw rod, an arc-shaped ejecting rod matching the size of the limiting cylinder is installed on the top of the active disc, the top of the arc-shaped ejecting rod movably abuts against the limiting cylinder and the ejection hole, and the arc-shaped ejecting rod movably penetrates through the fixed plate.

[0012] As a preferred technical scheme of the present application, the feeding and cleaning assembly further comprises a feeding piston rod fixedly installed around the bottom of the active disc, a feeding cylinder is fixedly installed around the inner bottom of the processing table, the feeding piston plate movably abuts against the feeding cylinder, the bottom of the feeding piston rod extends to the feeding cylinder, and the bottom end of the feeding piston rod is fixedly installed at the top of the feeding piston plate.

[0013] The S-shaped clamping plate is fixedly installed with a feeding and cleaning seat at the bottom of the side away from the square rotating plate, a plurality of feeding nozzles are uniformly installed on the side close to the square rotating plate, an air charging pipe and an air exhaust pipe are fixedly installed at the bottom of the feeding cylinder, and the air exhaust pipe is connected to the feeding and cleaning seat.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1、In the present application, the screw rod is rigidly connected with the square rotating plate in the connecting rod positioning assembly, so that the rotating movement of the screw rod is transmitted to the square rotating plate without delay and synchronously, the rotation of the square rotating plate synchronously pulls the four limiting sliding blocks and the positioning blocks thereon to move along the respective guide rails to the center axis of the mechanism, forming precise synchronous gathering movement, and through precise mechanical linkage, the single rotation input of the motor is efficiently and synchronously converted into clamping actions in four directions, realizing uniform and stable clamping of the circuit board around, and correspondingly, cleaning before and after marking the circuit board is realized, improving the marking quality of the circuit board.

[0016] 2. In this invention, the rigid structure of the square rotating plate and the constraint mechanism of the L-shaped connecting rod in the linkage positioning assembly are used to ensure that the movement of the four clamping plates is completely synchronized and the displacement is consistent. This ensures that the circuit board is accurately positioned at the theoretical center of the mechanism, with extremely high repeatability. The "converging" linkage clamping method makes the clamping force balanced in four directions, forming a stable "wrapping" effect. This greatly improves the circuit board's resistance to vibration and displacement in subsequent processes, completely changing the problems of limited positioning accuracy, uneven force, and easy board offset or deformation caused by traditional single-sided positioning. This achieves true all-round precision positioning.

[0017] 3. In this invention, the marking circuit board is cleaned by the discharge nozzle on the discharge cleaning seat. The waste is collected in the cleaning tray through the collection hole, which ensures that the waste is not stirred up and causes environmental pollution. During the cleaning process, the discharge nozzle gradually moves away from the circuit board, expanding the cleaning area of ​​the processing table. This allows the waste that splashes around the circuit board to be blown into the collection hole. The nozzle is close to the cleaning area to achieve high-intensity, targeted removal of waste in the core area, while it moves away from the cleaning area to cover the edge area of ​​the circuit board. The nozzle movement trajectory is automatically adjusted based on the size of the circuit board to generate the optimal airflow coverage mode, which concentrates the waste generated by marking into the cleaning tray below the collection hole, reducing the cleaning workload of workshop workers.

[0018] 4. In this invention, the circuit board is lifted from all sides by scraping the arc-shaped top rod in the top material assembly, which makes it easier for the operator to pick up the marked circuit board. At the same time, the collection holes at the bottom of the circuit board are also exposed and opened. With the help of the feeding nozzle, the waste from all sides is blown into the collection holes. The waste collection efficiency is improved during the lifting stage, the waste collection effect is enhanced, and the cleaning effect of the processing table is improved.

[0019] 5. In this invention, the scraping top material assembly drives the top cleaning and storage tray to rotate at the bottom of the fixed disc. The triangular cleaning brush inside the cleaning and storage tray reciprocates to clean the fixed disc, scraping and cleaning the bottom of the collection holes on the fixed disc, so that the bottom of the collection holes will not be blocked. The triangular cleaning brush with twisting motion provides comprehensive and thorough cleaning coverage, so that the collection holes are thoroughly cleaned, improving the cleaning and storage tray's ability to collect waste.

[0020] 6. In this invention, the feeding nozzle of the feeding cleaning seat in the feeding cleaning assembly cleans the circuit board before marking, removes the dust adhering to the surface of the circuit board before marking, improves the marking quality of the circuit board, makes the circuit board stable during the marking process, and prevents the adhering impurities from causing a decrease in marking quality or even scrapping. It also reduces the amount of residual particles on the surface of the circuit board in the previous process, improves the cleanliness of the circuit board before marking, and thus improves the marking quality of the circuit board. Attached Figure Description

[0021] Figure 1 The overall structure of the present application is shown in the schematic diagram. Figure 2 The structure of the processing box of the present application is shown in the schematic diagram. Figure 3 The top structure of the processing table of the present application is shown in the schematic diagram. Figure 4 The structure of the cleaning storage tray of the present application is shown in the schematic diagram. Figure 5 The bottom structure of the processing table of the present application is shown in the schematic diagram. Figure 6 The connection structure of the fixing plate of the present application is shown in the schematic diagram. Figure 7 The structure of the square rotating plate of the present application is shown in the schematic diagram. Figure 8 The structure of the movable tray of the present application is shown in the schematic diagram. Figure 9 The internal structure of the upper and lower feeding cylinders of the present application is shown in the schematic diagram. Figure 10 The structure of the S-shaped clamping plate of the present application is shown in the schematic diagram.

[0022] Wherein: 10, processing box; 11, laser frame; 12, laser marking machine; 13, folding display screen; 14, controller; 20, processing table; 21, fixing plate; 22, limiting guide rail; 23, limiting sliding block; 24, positioning block; 25, square rotating plate; 26, L-shaped connecting rod; 27, L-shaped positioning rod; 28, positioning groove; 29, S-shaped clamping plate; 30, lower feeding cylinder; 31, lower feeding piston rod; 32, lower feeding nozzle; 33, connecting plate; 34, lower feeding piston plate; 35, connecting opening; 36, lower feeding cleaning seat; 37, air inlet pipe; 38, air outlet pipe; 40, movable tray; 41, cleaning storage tray; 42, limiting cylinder; 43, storage hole; 44, collection hole; 45, fixed disc; 46, rotating rod; 47, triangular cleaning brush; 48, ejection hole; 49, arc-shaped ejector rod; 50, upper feeding cylinder; 51, upper feeding piston rod; 52, upper feeding piston plate; 53, upper feeding cleaning seat; 54, upper feeding nozzle; 55, air charging pipe; 56, air exhaust pipe; 57, servo motor; 58, screw rod. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific embodiments, but the following embodiments are only preferred embodiments of the present application, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application. In the following examples, the experimental methods are conventional methods, and the materials and reagents used in the following examples are commercially available unless otherwise specified.

[0024] Embodiment: as shown in Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 and Figure 8 , including processing box 10, laser frame 11 installed on the top of processing box 10 and laser marking machine 12 installed on the laser frame 11, processing box 10 is provided with processing table 20 at the bottom of laser marking machine 12, the top of processing table 20 is provided with connecting rod positioning assembly, which is used for positioning and clamping the four sides of the circuit board, the S-shaped clamping plate 29 in the connecting rod positioning assembly synchronously links the four sides of the circuit board, the connecting rod positioning assembly further includes positioning block 24 and square rotating plate 25, the laser frame 11 is further provided with folding display screen 13 and controller 14, the laser marking machine 12 is controlled through the display and controller 14, the servo motor 57 for driving the square rotating plate 25 to rotate is fixedly installed in the bottom of the processing table 20, the connecting rod positioning assembly further includes L-shaped connecting rod 26, the fixed plate 21 is fixedly installed in the processing table 20, the limit guide rail 22 is fixedly installed around the top of the fixed plate 21, the limit sliding block 23 is slidably connected on the limit guide rail 22, the positioning block 24 is fixedly installed on the limit sliding block 23, the positioning block 24 realizes stable and smooth reciprocating motion under the action of the limit sliding block 23 and the limit guide rail 22, the square rotating plate 25 is movably arranged at the top center of the fixed plate 21, the L-shaped connecting rod 26 is movably connected between the bottom four corners of the square rotating plate 25 and the positioning block 24, the square rotating plate 25 drives the positioning block 24 to move through the L-shaped connecting rod 26 in rotating motion, the servo motor 57 is fixedly installed at the output end of the screw rod 58, and the top end of the screw rod 58 penetrates through the fixed plate 21 and is installed at the bottom center of the square rotating plate 25.

[0025] Referring to Figure 3 , Figure 6 , Figure 7 and Figure 8The top two ends of the positioning block 24 are fixedly provided with L-shaped positioning rods 27, the top of the L-shaped positioning rod 27 extends to the top outside of the machining table 20, and the top end of the L-shaped positioning rod 27 is fixedly provided with an S-shaped clamping plate 29, the S-shaped clamping plate 29 is movably arranged at the top of the machining table 20, the machining table 20 is provided with positioning grooves 28 around the top, and the L-shaped positioning rod 27 movably extends in the positioning groove 28.

[0026] Referring to Figure 3 , Figure 6 , Figure 7 and Figure 8 , the screw rod 58 is driven to rotate by the servo motor 57, the square rotating plate 25 is driven to rotate by the synchronous belt, the positioning block 24 on the limiting guide rail 22 and the limiting sliding block 23 is driven to move together by the L-shaped connecting rod 26 in the rotating process of the square rotating plate 25, the S-shaped clamping plate 29 is driven to move synchronously by the L-shaped positioning rod 27 in the moving-together process of the positioning block 24, the S-shaped clamping plate 29 is used for positioning and clamping the line board around, the linkage clamping effect is realized by the square rotating plate 25 in the rotating process cooperating with the L-shaped connecting rod 26 to drive the S-shaped clamping plate 29 around, the line board is not positioned in a single direction, and the S-shaped clamping plate 29 around linkage improves the positioning effect.

[0027] Referring to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , the bottom of the positioning block 24 is provided with a discharging and cleaning assembly, the discharging and cleaning assembly is used for blowing and cleaning the line board after marking, the S-shaped clamping plate 29 is driven to move synchronously by the positioning block 24 when the positioning block 24 drives the S-shaped clamping plate 29 to release the line board, the discharging and cleaning assembly is used for cooperating with the discharging cylinder 30 to blow and clean the line board after marking, the discharging and cleaning assembly further comprises a discharging piston rod 31 and a discharging nozzle 32, the discharging cylinder 30 is fixedly arranged around the fixed plate 21 and located at the bottom side of the positioning block 24, the connecting plate 33 is fixedly arranged at the bottom of the positioning block 24, the discharging piston rod 31 is fixedly arranged on the side of the connecting plate 33 away from the square rotating plate 25, the discharging piston plate 34 is movably arranged in the discharging cylinder 30, the discharging piston rod 31 extends to the inside of the discharging cylinder 30, and the discharging piston rod 31 is fixedly arranged on the discharging piston plate 34, the connecting plate 33 is movably arranged in the connecting opening 35 around the fixed plate 21.

[0028] Referring to Figure 5 , Figure 6 , Figure 7 , Figure 8 ,Figure 9 and Figure 10 , the S-shaped clamping plate 29 is fixedly installed with a discharging cleaning seat 36 at the top of the side away from the square rotating plate 25, a plurality of discharging nozzles 32 are uniformly installed on the side close to the square rotating plate 25, and the discharging nozzles 32 are located at the top groove of the S-shaped clamping plate 29, the air inlet pipe 37 and the air outlet pipe 38 are fixedly installed at the end away from the square rotating plate 25, and the air outlet pipe 38 is connected to the discharging cleaning seat 36, the air inlet pipe 37 and the air outlet pipe 38 are both installed with a one-way valve, thereby ensuring that the air in the discharging cylinder 30 enters in one direction through the air inlet pipe 37, and the air in the discharging cylinder 30 is discharged in one direction through the air outlet pipe 38.

[0029] Referring to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , when the square rotating plate 25 on the screw rod 58 driven by the servo motor 57 rotates reversely, the square rotating plate 25 drives the positioning block 24 to move on the limiting guide rail 22 in a diffusion manner through the L-shaped connecting rod 26, the positioning block 24 moves away from the marked circuit board through the L-shaped positioning rod 27 with the S-shaped clamping plate 29, when the positioning block 24 moves away from the square rotating plate 25, the positioning block 24 moves through the connecting rod with the discharging piston rod 31, the connecting rod moves in the connecting opening 35, the discharging piston rod 31 drives the discharging piston plate 34 to generate a positive pressure in the discharging cylinder 30, the compressed air in the discharging cylinder 30 enters the discharging cleaning seat 36 through the air outlet pipe 38, and the discharging nozzles 32 on the discharging cleaning seat 36 clean the marked circuit board, at this time, the air blowing cleaning can blow the marking waste into the collecting hole 44 to enter the cleaning storage disc 41 for centralized collection, and can also ensure that the waste is not blown up to pollute the surrounding environment, and the discharging nozzles 32 gradually move away from the circuit board during the cleaning process, expand the cleaning area of the processing table 20, and blow the waste scattered around the circuit board into the collecting hole 44.

[0030] Referring to Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8The inside of the processing table 20 is movably provided with a movable disc 40, the top of the movable disc 40 is provided with a scraping and ejection assembly, the scraping and ejection assembly comprises a cleaning brush for scraping the debris of the processing table 20 and an arc-shaped ejection rod 49 for ejecting the circuit board after marking, the scraping and ejection assembly further comprises a cleaning storage disc 41 and a limiting cylinder 42, the top center of the processing table 20 is provided with a storage hole 43, the top of the storage hole 43 is movably provided with a fixed disc 45 with a collection hole 44, the fixed disc 45 is located at the same horizontal plane as the processing table 20, the top center of the square rotating plate 25 is fixedly provided with a rotating rod 46, the cleaning storage disc 41 is fixedly installed at the top end of the rotating rod 46, a triangular cleaning brush 47 is fixedly installed at the bottom of the cleaning storage disc 41, the triangular cleaning brush 47 is made of plastic material, the cleaning storage disc 41 movably fixes the bottom center of the fixed disc 45, and the triangular cleaning brush 47 movably abuts against the bottom of the fixed disc 45.

[0031] Referring to Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 , the processing table 20 is uniformly provided with a plurality of ejection holes 48 at the outer periphery of the storage hole 43, the top of the processing table 20 is fixedly provided with a limiting cylinder 42 at the bottom of the ejection hole 48, the screw rod 58 is threadedly connected with the movable disc 40 at the bottom of the fixed plate 21, the top of the movable disc 40 is provided with an arc-shaped ejection rod 49 which is the same size as the limiting cylinder 42, the top of the arc-shaped ejection rod 49 is movably arranged in the limiting cylinder 42 and the ejection hole 48, and the arc-shaped ejection rod 49 movably penetrates the fixed plate 21.

[0032] Referring to Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8When the positioning block 24 expands, the screw rod 58 reverses and the movable disc 40 rises, and the arc-shaped top rod 49 rises in the limiting cylinder 42, and the circuit board is lifted from all around, which is convenient for the operator to take the marked circuit board, and the collection hole 44 at the bottom of the circuit board is also exposed and opened, and the waste is blown into the collection hole 44 by the blanking nozzle 32 during the lifting process, so that the waste collection effect is enhanced, the cleaning effect of the processing table 20 is improved, and the cleaning storage disc 41 at the top is driven to rotate at the bottom of the fixed disc 45 during the rotation of the square rotating plate 25 driven by the servo motor 57, and the triangular cleaning brush 47 in the cleaning storage disc 41 reciprocatingly rotates to clean the fixed disc 45, so that the collection hole 44 at the bottom of the fixed disc 45 is scraped and cleaned, effectively avoiding the waste from being blocked at the bottom of the collection hole 44, and the waste at the top of the processing table 20 cannot be collected into the cleaning storage disc 41.

[0033] Referring to Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , the bottom of the movable disc 40 is also provided with a feeding cleaning assembly, which is used for blowing and cleaning the circuit board before marking, and the S-shaped clamping plate 29 is driven to limit and hold the circuit board by the positioning block 24, and the feeding piston plate 52 in the blanking cleaning assembly is driven to cooperate with the feeding cylinder 50 to blow and clean the circuit board before marking, the feeding cleaning assembly further comprises a feeding piston rod 51 fixedly installed at the bottom of the movable disc 40, and the feeding cylinder 50 is fixedly installed at the bottom of the processing table 20, and the feeding piston plate 52 moves in the feeding cylinder 50, the bottom of the feeding piston rod 51 extends into the feeding cylinder 50, and the bottom of the feeding piston rod 51 is fixedly installed at the top of the feeding piston plate 52.

[0034] Referring to Figure 4 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , the S-shaped clamping plate 29 is fixedly installed with a feeding cleaning seat 53 at the bottom of the side away from the square rotating plate 25, and the feeding cleaning seat 53 is uniformly installed with a plurality of feeding nozzles 54 on the side close to the square rotating plate 25, the bottom of the feeding cylinder 50 is fixedly installed with an air charging pipe 55 and an air exhaust pipe 56, and the air exhaust pipe 56 is connected to the feeding cleaning seat 53, and the air charging pipe 55 and the air exhaust pipe 38 are both installed with a one-way valve, so as to ensure that the air in the feeding cylinder 50 enters in one direction through the air charging pipe 55, and the air in the feeding cylinder 50 is discharged in one direction through the air exhaust pipe 56.

[0035] Referring to Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , in the process of clamping the circuit board by the converging movement of the positioning block 24, the movable disc 40 on the screw rod 58 realizes descending movement under the limiting action of the arc-shaped ejector rod 49 and the fixed plate 21. In the descending movement process of the movable disc 40, the feeding piston plate 52 in the feeding cylinder 50 is driven by the feeding piston rod 51 to move synchronously. The feeding piston plate 52 generates positive pressure in the inside of the feeding cylinder 50. The compressed air in the inside of the feeding cylinder 50 enters the feeding cleaning seat 53 through the exhaust pipe seat, and the feeding nozzle 54 on the feeding cleaning seat 53 cleans the circuit board before marking, cleans the dust adhered to the surface of the circuit board before marking, improves the quality of the circuit board marking, and makes the circuit board stable during the marking process without adhering impurities to reduce the marking quality or even be scrapped.

[0036] Working principle: place the circuit board to be processed on the top of the fixed disc 45, drive the screw rod 58 to rotate by the servo motor 57, and the screw rod 58 drives the square rotating plate 25 to rotate synchronously. In the rotating process of the square rotating plate 25, the positioning block 24 on the limiting guide rail 22 and the limiting sliding block 23 is driven by the L-shaped connecting rod 26 to move convergently. In the converging pulling process of the positioning block 24, the S-shaped clamping plate 29 is driven by the L-shaped positioning rod 27 to move synchronously. The S-shaped clamping plate 29 is used for positioning and clamping the circuit board around, and the S-shaped clamping plate 29 around is driven by the square rotating plate 25 rotating in cooperation with the L-shaped connecting rod 26 to realize linkage clamping effect. The S-shaped clamping plate 29 around improves the positioning effect.

[0037] In the process of clamping the circuit board by the converging movement of the positioning block 24, the movable disc 40 on the screw rod 58 realizes descending movement under the limiting action of the arc-shaped ejector rod 49 and the fixed plate 21. In the descending movement process of the movable disc 40, the feeding piston plate 52 in the feeding cylinder 50 is driven by the feeding piston rod 51 to move synchronously. The feeding piston plate 52 generates positive pressure in the inside of the feeding cylinder 50. The compressed air in the inside of the feeding cylinder 50 enters the feeding cleaning seat 53 through the exhaust pipe seat, and the feeding nozzle 54 on the feeding cleaning seat 53 cleans the circuit board before marking, cleans the dust adhered to the surface of the circuit board before marking, improves the quality of the circuit board marking, and makes the circuit board stable during the marking process without adhering impurities to reduce the marking quality or even be scrapped; Synchronous, the activity disc 40 on the screw 58 will drive the arc-shaped ejector rod 49 to descend from the limiting cylinder 42 and the ejection hole 48 during the descending process, the arc-shaped ejector rod 49 enters the limiting cylinder 42, at this time, the circuit board placed on the fixed disc 45 will not be blocked, in addition, the positioning block 24 moves with the blanking piston rod 31 and the blanking piston plate 34, generating negative pressure in the blanking cylinder 30, at this time, the blanking cylinder 30 realizes gas filling through the air inlet pipe 37.

[0038] When the square rotating plate 25 on the screw 58 driven by the servo motor 57 occurs reverse rotation, the square rotating plate 25 will drive the positioning block 24 to diffuse on the limiting guide rail 22, the positioning block 24 moves away from the S-shaped clamping plate 29 through the L-shaped positioning rod 27, when the positioning block 24 moves away from the square rotating plate 25, the positioning block 24 moves with the blanking piston rod 31 through the connecting rod, the connecting rod moves in the connecting opening 35, the blanking piston rod 31 drives the blanking piston plate 34 to generate positive pressure in the blanking cylinder 30, the compressed air in the blanking cylinder 30 will enter the blanking cleaning seat 36 through the air outlet pipe 38, and clean the marked circuit board through the blanking nozzle 32 on the blanking cleaning seat 36, at this time, the air blowing cleaning can blow the marking debris into the collection hole 44 through the collection hole 44 to enter the cleaning storage disc 41 for centralized collection, and can also ensure that the debris will not be blown up to pollute the surrounding environment, and the blanking nozzle 32 gradually moves away from the circuit board during the cleaning process, expanding the cleaning area of the processing table 20, so that the debris splashed around the circuit board is blown into the collection hole 44; When the positioning block 24 diffuses, the screw 58 reverses to drive the activity disc 40 to ascend, the activity disc 40 ascends, driving the arc-shaped ejector rod 49 to ascend in the limiting cylinder 42, the arc-shaped ejector rod 49 lifts the circuit board from all around, at this time, it is convenient for the operator to take the marked circuit board, at this time, the collection hole 44 at the bottom of the circuit board is also exposed and opened, in the lifting process, the blanking nozzle 32 blows the debris around the collection hole 44, the debris collection effect is enhanced, and the cleaning effect of the processing table 20 is improved; During the lifting of the movable disc 40, the feeding piston plate 52 inside the feeding cylinder 50 moves upward synchronously, and the feeding piston plate 52 generates negative pressure inside the feeding cylinder 50. The feeding cylinder 50 realizes the gas filling effect through the gas filling pipe 55. During the rotation of the square rotating plate 25 driven by the servo motor 57 through the screw rod 58, the top cleaning and storing disc 41 at the bottom of the fixed disc 45 rotates, and the triangular cleaning brush 47 inside the cleaning and storing disc 41 reciprocatingly rotates to clean the fixed disc 45, scrapes and cleans the bottom of the collecting hole 44 on the fixed disc 45, effectively avoids the blockage of the scrap at the bottom of the collecting hole 44, and the scrap on the top of the processing table 20 cannot be collected into the cleaning and storing disc 41. The structure linkage effect is good, and the positioning, pre-marking cleaning, post-marking cleaning, post-marking ejection and scrap recycling are integrated.

[0039] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A kind of line board laser marking auxiliary positioning device, including processing box, laser frame being installed in the top of processing box and laser marking machine being installed on laser frame, it is characterized in that, The processing box is provided with a processing table at the bottom of the laser marking machine, and a connecting rod positioning assembly is arranged on the top of the processing table and used for positioning and clamping the circuit board around, and S-shaped clamping plates arranged in the connecting rod positioning assembly are synchronously linked to centrally limit and clamp the four sides of the circuit board. The inside of the processing table is movably provided with a movable disc, the top of the movable disc is provided with a scraping and top feeding assembly, the scraping and top feeding assembly comprises a cleaning brush for scraping and collecting debris on the processing table and an arc-shaped top rod for lifting and discharging the marked circuit board, and the bottom of the movable disc is further provided with a feeding cleaning assembly for blowing and cleaning the circuit board before marking.

2. The laser marking auxiliary positioning device for a circuit board according to claim 1, characterized in that, The laser frame is further provided with a folding display screen and a controller, a servo motor is fixedly installed at the bottom of the processing table and used for driving the square rotating plate to rotate, the connecting rod positioning assembly further comprises an L-shaped connecting rod, a fixed plate is fixedly installed in the processing table, limit guides are fixedly installed around the top of the fixed plate, limit sliders are slidably connected to the limit guides, the positioning blocks are fixedly installed on the limit sliders, a square rotating plate is movably arranged at the center of the top of the fixed plate, L-shaped connecting rods are movably connected between the bottom corners of the square rotating plate and the positioning blocks, a screw rod is fixedly installed at the output end of the servo motor and penetrates through the fixed plate and is installed at the bottom center of the square rotating plate.

3. The laser marking auxiliary positioning device for a circuit board according to claim 2, characterized in that, L-shaped positioning rods are fixedly installed at the two ends of the top of the positioning block, the L-shaped positioning rods penetrate through and extend to the outside of the top of the processing table, S-shaped clamping plates are fixedly installed at the top ends of the L-shaped positioning rods, and the processing table is provided with positioning grooves around the top, which are matched with the L-shaped positioning rods.

4. The laser marking auxiliary positioning device for a circuit board according to claim 1, wherein, The feeding cleaning assembly further comprises a feeding piston rod and a feeding nozzle, feeding cylinders are fixedly installed around the fixed plate and located at the bottom side of the positioning block, connecting plates are fixedly installed at the bottom of the positioning block, the feeding piston rod is fixedly installed on the connecting plate away from the square rotating plate, the feeding piston plate is movably arranged in the feeding cylinder, the feeding piston rod penetrates through and extends to the inside of the feeding cylinder, and the feeding piston rod is fixedly installed on the feeding piston plate. The fixed plate is provided with connecting openings around the fixed plate, which are matched with the connecting plates.

5. The laser marking auxiliary positioning device for a circuit board according to claim 4, wherein, The S-shaped clamping plate is fixedly installed with a discharging cleaning seat at the top of the side far from the square rotating plate, a plurality of discharging nozzles are uniformly installed on the side close to the square rotating plate, the discharging nozzles are located at the top groove of the S-shaped clamping plate, and the discharging cylinder is fixedly installed with an air inlet pipe and an air outlet pipe at the end far from the square rotating plate, and the air outlet pipe is connected to the discharging cleaning seat.

6. The laser marking auxiliary positioning device for a circuit board according to claim 2, wherein, The scraping and top material feeding assembly further comprises a cleaning storage disc and a limiting cylinder, the top center of the processing table is provided with a storage hole, the top of the storage hole is movably provided with a fixed disc with a collection hole, the fixed disc is located on the same horizontal plane as the processing table, the top center of the square rotating plate is fixedly installed with a rotating rod, the cleaning storage disc is fixedly installed at the top end of the rotating rod, a triangular cleaning brush is fixedly installed at the bottom of the cleaning storage disc, the bottom center of the cleaning storage disc is movably fixed to the fixed disc, and the triangular cleaning brush movably abuts against the bottom of the fixed disc.

7. The laser marking auxiliary positioning device for a circuit board according to claim 6, wherein, The processing table is uniformly provided with a plurality of ejection holes at the outer periphery of the storage hole, a limiting cylinder is fixedly installed at the bottom of the ejection hole in the processing table, a movable disc is threadedly connected to the bottom of the fixed plate on the screw rod, an arc-shaped ejecting rod with a size matching that of the limiting cylinder is installed on the top of the movable disc, the top of the arc-shaped ejecting rod movably locates in the limiting cylinder and the ejection hole, and the arc-shaped ejecting rod movably penetrates through the fixed plate.

8. The laser marking auxiliary positioning device for a circuit board according to claim 7, wherein, The feeding cleaning assembly further comprises a feeding piston rod fixedly installed around the bottom of the movable disc, an upper feeding cylinder is fixedly installed around the inner bottom of the processing table, the feeding piston plate movably locates in the upper feeding cylinder, the bottom of the feeding piston rod extends through and penetrates into the upper feeding cylinder, and the bottom end of the feeding piston rod is fixedly installed at the top of the feeding piston plate.

9. The laser marking auxiliary positioning device for a circuit board according to claim 8, wherein, The S-shaped clamping plate is fixedly installed with an upper feeding cleaning seat at the bottom of the side far from the square rotating plate, a plurality of upper feeding nozzles are uniformly installed on the side close to the square rotating plate, the bottom of the upper feeding cylinder is fixedly installed with an air charging pipe and an air exhaust pipe, and the air exhaust pipe is connected to the upper feeding cleaning seat.

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