Multi-path cutting device for PCB (Printed Circuit Board)

Abstract

The invention discloses a multi-path cutting device for a PCB (Printed Circuit Board), and relates to the technical field of multi-path cutting devices. According to the invention, multiple detection data at the same time point are processed through the analysis module, false detection caused by equipment vibration, instantaneous airflow disturbance and the like is filtered, and the accuracy of submitted detection is improved; the concentration change fluctuation is judged by calculating the concentration change quantity of adjacent detection time points, so that the synchronous response of the treatment speed regulation and the gas generation quantity change is ensured; the volume change of the air bag and the gas concentration at the outlet of the treatment equipment are monitored in real time to form closed-loop control, so that the treatment speed and the gas generation amount can reach a new balance state in a short time; a four-dimensional protection system of source control, real-time monitoring, intelligent adjustment and emergency buffering is constructed, the problem that in the prior art, harmful gas cannot be treated in time is fundamentally solved, and a clean and safe production environment is created for PCB cutting operation.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-path cutting devices, and in particular to a multi-path cutting device for a PCB circuit board. Background Art

[0002] In the modern electronic information industry, printed circuit boards (PCBs) are key components for achieving electrical connections in various electronic products and are widely used in computers, communication equipment, consumer electronics and other fields. As electronic products develop towards miniaturization, integration and multi-functionality, higher requirements are placed on the processing accuracy and production efficiency of PCBs. Cutting is an important link in the PCB manufacturing process, and its technical level directly affects the quality of the circuit boards and production efficiency. However, existing PCB cutting devices mostly use a single-pass cutting method during use, which means they can only cut one circuit board or one circuit at a time. This results in low cutting efficiency and is difficult to meet the needs of large-scale production. Furthermore, during the cutting process, the position adjustment of the cutting tool or laser head is not flexible enough. For circuit boards of different specifications and designs, the equipment parameters need to be frequently adjusted, which increases production preparation time. Existing PCB circuit board cutting devices have obvious deficiencies when dealing with harmful gases. On the one hand, most of them adopt a single-path cutting method, which has low cutting efficiency, resulting in a more concentrated generation of harmful gases, increasing the difficulty of treatment; on the other hand, during the cutting process, the adjustment of the collection and treatment equipment for harmful gases is not flexible enough, and it is difficult to adjust the processing speed in time according to the changes in the amount of harmful gas generated. When the amount of harmful gas generated increases, the processing equipment cannot respond in time, which easily leads to the discharge of harmful gases and pollution of the environment; when the amount of harmful gas generated decreases, the processing equipment still maintains the original processing speed, resulting in energy waste; Therefore, the above technical problems need to be solved. Summary of the Invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a PCB circuit board multi-path cutting device.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a multi-path cutting device for a PCB circuit board, comprising a support seat and a residue trough vertically downwardly opened in the middle of the support seat, a supporting mechanism is provided on the inner side of the support seat, and linear motors are installed on both sides of the upper end of the support seat relative to each other, a positioning mechanism is provided between the linear motors, and a moving seat is movably installed on the linear motor, a lifting mechanism is installed in the moving seat, and lifting blocks are vertically slidably installed between the moving seats, and a multi-path cutting mechanism is installed between the lifting blocks.

[0005] Preferably, the supporting mechanism comprises U-shaped clamping blocks fixedly connected to the inner wall of the residue trough on the support seat at equal intervals, and a supporting plate is inserted between the clamping blocks on both sides.

[0006] Preferably, the lifting mechanism includes a column fixedly connected to the upper end of the movable seat, and a convex groove is provided on the opposite surface of the column. A second screw is installed in the convex groove for vertical rotation. The second screw is connected to the lifting block through a thread, and a cover is provided at the upper end of the second screw. A first servo motor is installed above the cover, and the output end of the first servo motor passes through the cover and is clamped with the middle part of the top end of the second screw.

[0007] Preferably, one side of the lifting block is fixedly connected to the connecting block, and movable grooves are provided at the lower ends of the lifting block and the connecting block.

[0008] Preferably, the multi-path cutting mechanism includes a second bidirectional screw and a first screw which are respectively installed horizontally and rotatably in the lifting block and the connecting block, and laser cutting heads are respectively installed on the upper ends of the second bidirectional screw and the first screw, and driving motors are installed on one end of the lifting block and the connecting block corresponding to the second bidirectional screw and the first screw, and the output end of the driving motor passes through the lifting block and the connecting block and is clamped with one end of the second bidirectional screw and the first screw.

[0009] Preferably, the positioning mechanism includes a clamping groove opened at one end of the support seat, a first bidirectional screw is rotatably installed in the clamping groove, and clamping plates are installed at both ends of the first bidirectional screw relative to each other through threads. A second servo motor is installed on the support seat corresponding to one end of the first bidirectional screw, and the output end of the second servo motor passes through the support seat and is clamped in the middle of one end of the first bidirectional screw.

[0010] Preferably, an intelligent control component is provided inside the control box of the cutting device, and the intelligent control component includes an analysis module; The analysis module receives the data transmitted by the acquisition module, analyzes the gas concentration data, and determines whether the suction speed at the suction hood position needs to be adjusted. If adjustment is determined to be necessary, a speed control signal is generated and transmitted to the execution module; the other data transmitted by the acquisition module are analyzed to determine the relationship between the quality of pollutants treated by the treatment equipment and the gas concentration, control valve and airbag pressure.

[0011] Preferably, the outer wall of the laser cutting head is equipped with an air suction hood through a connecting structure, and slide rails are provided at the upper and lower positions on one side of the outer wall of the support seat, and a slider is slidably connected to the slide rail, and a telescopic spring is connected to one end of the slider and the slide rail, an extrusion roller is installed between the two sliders, and a support frame is also provided at the position corresponding to the extrusion roller between the two sliders, a winding roller is installed on the support frame, and an air suction device is also installed on the support frame, and both ends of the winding roller are connected to the support frame through a spiral spring, and an air bag is provided at the position corresponding to the extrusion roller on the outer wall of the support seat, one end of the air bag is installed on the winding roller and is wound by the winding roller, and the other end is installed on one end of the outer wall of the support seat, the air suction hood and the suction device, and the suction device and the air bag are all connected through a conduit, and a control valve is provided on the conduit.

[0012] Preferably, the intelligent control component further includes an acquisition module, an analysis module and an execution module; The acquisition module collects the corresponding gas concentration data, the pollutant mass data at the location of the harmful gas treatment equipment, the gas flow rate, the control valve opening, the airbag pressure and volume data, and transmits the collected data to the analysis module; The execution module receives the speed control signal transmitted by the analysis module and distinguishes it. If the speed control signal is a speed-up signal / deceleration signal, the control valve between the corresponding suction hood and the suction equipment will be adjusted up / down, and the operation will be stopped when the amount of harmful gas generated reaches a stable level.

[0013] Preferably, the analysis module performs the following steps to generate the speed regulation signal: S1: Sort the gas concentration data detected at the hood position by acquisition time, and average the multiple gas concentration data detected at the same time. and standard deviation The calculated standard deviation and mean Detect data fluctuation range at corresponding moments The setting is to mark the test data that is not within the fluctuation range as an outlier, and then remove the outlier and average the remaining test data. Calculation of the mean value As the gas concentration data detected at that moment; S2: Gas concentration data detected at adjacent detection time points Calculate the difference to get the change in gas concentration , is the count from the time when the gas concentration is initially detected to the end time; if , then the harmful gas generation amount is determined to be stable; if , it is determined that the amount of harmful gas generated has increased, a speed-up signal is generated, and the speed-up signal is transmitted to the execution module; if , it is determined that the amount of harmful gas generated is reduced, a deceleration signal is generated, and the deceleration signal is transmitted to the execution module.

[0014] Preferably, the analysis module analyzes the relationship between the mass of pollutants processed by the processing equipment and the gas concentration, control valve and airbag pressure as follows: K1: Unit time for harmful gas treatment equipment The pollutant quality data processed in the system are obtained and sorted according to the collection time, and then the pollutant quality data of the corresponding time are sorted. Substitute into the formula ,get and Specific value of processing flow , is the gas flow rate data, is the catheter cross-sectional area data; K2: Gas flow rate and control valve opening The relationship is: , is the flow coefficient related to the valve type, is the pressure difference on both sides of the control valve, is the gas density; K3: The relationship between airbag pressure and volume is: , and are the gas pressure in the airbag and the volume data of the airbag respectively, and are the pressure and volume data in the initial state respectively; thus, we can deduce , then the coupling relationship between the processing flow rate and gas concentration, the control valve and the air bag is: ; K4: In summary, the processing equipment unit time The relationship between the mass of pollutants treated internally and the gas concentration, control valve opening and airbag pressure is: .

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The laser cutting head on the lifting block cooperates with the connecting block to facilitate cutting of a circuit board or a line, thereby improving the efficiency of laser cutting and achieving the function of improving cutting efficiency and meeting the needs of large-scale production. The driving motor cooperates with the second bidirectional screw and the first screw to facilitate the position adjustment of the laser head, thereby improving the flexibility of the equipment cutting and achieving the function of cutting circuit boards of different specifications and designs, ultimately solving the problems of low cutting efficiency and lack of flexibility of the device. 2. The analysis module processes multiple detection data at the same time point, filters out false detections caused by equipment vibration, instantaneous airflow disturbances, etc., and improves the accuracy of submitted tests. By calculating the concentration changes at adjacent detection time points and identifying concentration fluctuations, the system ensures that the processing speed adjustment responds synchronously with the changes in gas generation. The system also monitors the volume changes of the airbag and the gas concentration at the outlet of the processing equipment in real time to form a closed-loop control, which can achieve a new balance between the processing speed and gas generation in a short time. The system has established a four-dimensional protection system of "source control - real-time monitoring - intelligent adjustment - emergency buffer", which fundamentally solves the problem of untimely treatment of harmful gases in existing technologies and creates a clean and safe production environment for PCB circuit board cutting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the other side proposed by the present invention; Figure 3 This is a schematic diagram of the rear-view overall three-dimensional structure proposed by the present invention; Figure 4 This is a schematic diagram of the front structure of the present invention; Figure 5 This is a schematic diagram of the overall three-dimensional structure of the gantry proposed by the present invention when viewed from above; Figure 6 This is a schematic diagram of the partial and overall three-dimensional structure of the gantry proposed in the present invention; Figure 7 This is a flow chart of the system proposed in the present invention.

[0017] Serial numbers in the figure: 1. Support seat; 2. Linear motor; 3. Clamping block; 4. Support plate; 5. Clamping plate; 6. Moving seat; 7. Column; 8. First servo motor; 9. Lifting block; 10. Connecting block; 11. Second servo motor; 12. First bidirectional screw; 13. Second bidirectional screw; 14. First screw; 15. Second screw; 16. Drive motor; 17. Laser cutting head. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Example: See Figure 1-7 , a PCB circuit board multi-path cutting device in the present invention comprises a support base 1 and a residue groove vertically downwardly opened in the middle of the support base 1, a supporting mechanism is provided on the inner side of the support base 1, and linear motors 2 are relatively installed on both sides of the upper end of the support base 1, a positioning mechanism is provided between the linear motors 2, and a moving base 6 is movably installed on the linear motor 2, a lifting mechanism is equipped in the moving base 6, and a lifting block 9 is vertically slidably installed between the moving bases 6, and a multi-path cutting mechanism is equipped between the lifting blocks 9. Through the support base 1 and the residue groove, it is convenient to form the basic frame of the device and to collect the debris generated during the cutting process; the supporting mechanism includes a U-shaped clamping block 3 fixedly connected to the inner wall of the residue groove on the support base 1 at equal distances, and the two A supporting plate 4 is inserted between the side clamping blocks 3. The U-shaped clamping block 3 and the supporting plate 4 facilitate forming a stable placement plane for carrying the PCB circuit board; the lifting mechanism includes a column 7 fixedly connected to the upper end of the movable seat 6, and a convex groove is provided on the opposite surface of the column 7. The second screw 15 is vertically rotated and installed in the convex groove. The second screw 15 is connected to the lifting block 9 through a thread, and a cover is provided at the upper end of the second screw 15. A first servo motor 8 is installed above the cover. The output end of the first servo motor 8 passes through the cover and is clamped in the middle of the top end of the second screw 15. The first servo motor 8 and the second screw 15 facilitate the adjustment of the height of the multi-channel cutting mechanism to meet the cutting requirements of PCB circuit boards of different thicknesses.

[0020] In the present invention, one side of the lifting block 9 is fixedly connected to the connecting block 10, and a movable groove is provided at the lower end of the lifting block 9 and the connecting block 10, so that three laser cutting heads 17 can be easily installed through the lifting block 9 and the connecting block 10; the multi-way cutting mechanism includes a second bidirectional screw 13 and a first screw 14 which are respectively installed horizontally in the lifting block 9 and the connecting block 10, and the upper ends of the second bidirectional screw 13 and the first screw 14 are respectively installed with the laser cutting heads 17, and one end of the lifting block 9 and the connecting block 10 corresponding to the second bidirectional screw 13 and the first screw 14 is installed with a drive motor 16, and the output end of the drive motor 16 passes through the lifting block 9 and the connecting block 10 and one end of the second bidirectional screw 13 and the first screw 14 The clamping connection is through the first screw 14 and the second bidirectional screw 13, which facilitates the movement of the laser cutting head 17, thereby realizing multi-path cutting path planning for the PCB circuit board; the positioning mechanism includes a clamping groove opened at one end of the support base 1, and the first bidirectional screw 12 is rotatably installed in the clamping groove. The two ends of the first bidirectional screw 12 are relatively installed with a clamping plate 5 through a thread, and a second servo motor 11 is installed on the support base 1 corresponding to one end of the first bidirectional screw 12. The output end of the second servo motor 11 passes through the support base 1 and is clamped in the middle of one end of the first bidirectional screw 12. Through the first bidirectional screw 12 and the second servo motor 11, the clamping plate 5 is convenient for clamping and fixing the PCB circuit board placed on the supporting plate 4.

[0021] The control box of the cutting device is equipped with an intelligent control component, which includes an acquisition module, an analysis module and an execution module; The acquisition module collects the corresponding gas concentration data, the pollutant mass data at the location of the harmful gas treatment equipment, the gas flow rate, the control valve opening, the airbag pressure and volume data, and transmits the collected data to the analysis module; The analysis module receives the data transmitted by the acquisition module, analyzes the gas concentration data, and determines whether the suction speed at the suction hood position needs to be adjusted. If adjustment is determined to be necessary, it generates a speed adjustment signal and transmits the speed adjustment signal to the execution module; it also analyzes other data transmitted by the acquisition module to determine the relationship between the quality of pollutants treated by the treatment equipment and the gas concentration, control valve and airbag pressure; The outer sides of the laser cutting head 17 are all equipped with an air suction hood through a connecting structure, and slide rails are provided at the upper and lower positions of one side of the outer side wall of the support seat 1, and a slider is slidably connected to the slide rail, and a telescopic spring is connected to one end of the slider and the slide rail, and an extrusion roller is installed between the two sliders, and a support frame is also provided at the position corresponding to the extrusion roller between the two sliders, and a winding roller is installed on the support frame. The width of the winding roller is consistent with the diameter of the airbag, and an air suction device is also installed on the support frame. Both ends of the winding roller are connected to the support frame through a volute spring, and an airbag is provided at the position corresponding to the extrusion roller of the outer side wall of the support seat 1. One end of the airbag is installed on the winding roller and is wound by the winding roller, and the other end is installed on one end of the outer side wall of the support seat 1. The air suction hood and the suction device, as well as the suction device and the airbag are connected through a conduit, and a control valve is provided on the conduit; Analyze the harmful gases generated during the cutting process of the corresponding materials, obtain the type of harmful gas with the largest proportion, mark the type of harmful gas with the corresponding material, so that when the staff performs the cutting operation of the corresponding material, they can detect the amount of harmful gas generated by replacing the corresponding gas sensor on the exhaust hood; a gas sensor is installed at the exhaust hood to detect the concentration of the main harmful gas; Sort the gas concentration data detected at the hood position by acquisition time, and average the multiple gas concentration data detected at the same time. and standard deviation The calculated standard deviation and mean Detect data fluctuation range at corresponding moments The setting is to mark the test data that is not within the fluctuation range as an outlier, and then remove the outlier and average the remaining test data. Calculation of the mean value As the gas concentration data detected at that moment; mean 、 and standard deviation The calculation is the key to ensure the accuracy of gas concentration data; collect multiple data (usually 3-5 samples) at the same time point, calculate (original mean) and (standard deviation), and " "As the fluctuation range, this logic is derived from the normal distribution characteristics in statistics - about 95% of normal data will fall within the range of ±2 times the standard deviation of the mean, which can effectively filter out abnormal values ​​caused by transient interference of sensors (such as air flow fluctuations and electromagnetic noise); after eliminating abnormal values, the remaining data are recalculated. (corrected mean) to make the concentration data closer to the true value; for example, if the five data of a certain test are 100, 102, 150, 98, and 101 ppm, 110.2ppm, 20.5ppm, the fluctuation range is 69.2-151.2ppm, of which 150ppm is within the range and does not need to be eliminated. 110.2ppm; if the data is 100, 102, 200, 98, 101ppm, 200ppm is out of range (69.2-151.2), it will be removed 100.25ppm, which better reflects the actual concentration; Gas concentration data detected at adjacent detection time points Calculate the difference to get the change in gas concentration , is the count from the time when the gas concentration is initially detected to the end time; if , then the harmful gas generation amount is determined to be stable; if , it is determined that the amount of harmful gas generated has increased, a speed-up signal is generated, and the speed-up signal is transmitted to the execution module; if , it is determined that the amount of harmful gas generated is reduced, a deceleration signal is generated, and the deceleration signal is transmitted to the execution module; Concentration change The calculation is based on adjacent detection time points, and the time interval is usually set to 1-5 seconds (adjusted according to the cutting speed: the faster the cutting, the shorter the interval); Represents the number of detections from the start to the end of cutting (for example, if the cutting lasts for 60 seconds and the interval is 2 seconds, then 30); by comparison and The size of can be used to determine the gas generation trend: when When , it means that the concentration growth slows down but the total amount is still increasing, and the treatment needs to be accelerated; when When the two are equal, the generation amount is stable and the current processing speed is maintained; After receiving the speed-up signal / deceleration signal transmitted by the analysis module, the execution module adjusts the control valve between the corresponding suction hood and the suction equipment to increase / decrease the speed and stops when the amount of harmful gas generated reaches a stable level.

[0022] Unit time for harmful gas treatment equipment The pollutant quality data processed in the system are obtained and sorted according to the collection time, and then the pollutant quality data of the corresponding time are sorted. Substitute into the formula ,get and Specific value of processing flow , is the gas flow rate data, is the catheter cross-sectional area data; formula is a linear regression model used to fit the unit time Quality of pollutants treated internally ;in, is the slope, representing the growth rate of pollutant mass over time (unit: mg / h²), reflecting the intensity of gas generation during the cutting process; is the intercept, representing the initial moment ( The mass of pollutants (unit: mg / h) is usually the amount of gas remaining before cutting starts; its derivation requires the collection of at least 5 sets of data and calculation by the least squares method. and ; Gas flow rate and control valve opening The relationship is: , is the flow coefficient related to the valve type, is the pressure difference on both sides of the control valve, is the gas density; Flow coefficient It is a key parameter to characterize the flow capacity of the valve, which is closely related to the valve type and diameter. If the control valve involved in the document is a ball valve, The value is usually 0.6-0.8 (fully open); if it is a butterfly valve, The value is about 0.5-0.7; its determination needs to be done through experiments: Under a specific pressure difference (such as 100kPa), measure the volume of gas flowing through the valve per unit time, and then substitute it into the formula Calculation; for example, a ball valve 100kPa, 1.2kg / m³, 100m³ / h, then ≈0.69, which is in line with the typical value range; Gas density The standard state value (25°C, 101.3kPa) needs to be determined based on the main harmful gas components; the gases generated by PCB cutting are mainly air, formaldehyde, and CO, with a mixed density of approximately 1.1-1.3kg / m³. In actual applications, corrections must be made based on temperature (T) and pressure (P): ,in is the standard density, 101.3kPa, 298K; For example, when the temperature rises to 35℃ (308K) and the pressure becomes 105kPa, 1.2×(105 / 101.3)×(298 / 308)≈1.2kg / m³. The correction is small but must be included in the calculation. pressure difference The monitoring points are set at both ends of the control valve inlet and outlet, and the safety threshold is determined according to the material of the conduit: PVC conduits usually withstand ≤50kPa, and metal conduits can reach 100kPa; when When the threshold is exceeded, the system needs to automatically increase the valve opening (reduce resistance) to prevent the catheter from rupturing; for example, if the initial 30kPa, when the concentration suddenly increases, the flow demand increases. When the pressure rises to 45kPa (close to the PVC threshold), the actuator needs to adjust the valve opening from 50% to 70%. Fall back to around 30kPa; The relationship between the airbag pressure and volume is: , and are the gas pressure in the airbag and the volume data of the airbag respectively, and are the pressure and volume data in the initial state respectively; thus, we can deduce , then the coupling relationship between the processing flow rate and gas concentration, the control valve and the air bag is: ; From this we can get, , adjust the opening of the control valve according to the changes in time and the changes in the airbag to prevent the leakage of harmful gas treatment equipment due to untimely treatment of harmful gas, which will pollute the environment and affect the health of workers;

[0023] Initial airbag pressure Usually set slightly above atmospheric pressure 5-10kPa, the initial volume Determine according to the suction equipment's suction rate (e.g. when the suction rate is 50m³ / h, 0.5-1m³), to ensure rapid filling at the initial stage of gas introduction; the maximum expansion volume (V_QN) is designed to be 3-5 times (such as 1m³, V_QN=5m³). At this time, the corresponding maximum pressure P_QN needs to be determined through a burst test (usually ≤50kPa) to avoid airbag rupture caused by excessive expansion.

[0024] Working principle: When the present invention is used, first insert the supporting plate 4 into the U-shaped clamping block 3 to form a stable bearing platform, and then place the PCB circuit board to be cut on the supporting plate 4. At this time, start the second servo motor 11 to drive the first bidirectional screw 12 to rotate, so that the clamping plates 5 on both sides move relatively, thereby clamping the PCB board to ensure that the board is fixed during cutting. Then, by starting the linear motor 2, drive the moving seat 6 to move on the support seat 1, so that the lifting block 9 and the multi-way cutting mechanism move to the initial cutting position above the PCB board, and then by starting the first servo motor 8, drive the second screw 15 to rotate, so that the lifting block 9 moves vertically between the columns 7, and adjust the exciting The height of the optical cutting head 17 is adjusted so that the laser cutting head 17 maintains a suitable cutting distance from the surface of the PCB board. Then the driving motor 16 is started, which can respectively drive the second bidirectional screw 13 and the first screw 14 to rotate. The second bidirectional screw 13 drives the laser cutting heads 17 at both ends to move horizontally, thereby adjusting the distance between the two cutting heads, and the first screw 14 drives the laser cutting head 17 in the connecting block 10 to move in one direction, and cooperates with the second bidirectional screw 13 to realize the position calibration of the multi-path cutting head to meet the requirements of different cutting paths. The laser cutting heads 17 of the multi-path cutting mechanism are started at the same time, and the PCB board is cut according to the preset program. The linear motor 2 synchronously drives the moving seat 6 to move horizontally, so that the cutting The head moves along a predetermined trajectory to complete straight or curved cutting. During the cutting process, the harmful gas generated during the cutting process is absorbed by the suction equipment connected to each suction hood through a duct, and the absorbed harmful gas is transmitted to the inside of the airbag through a duct connected to the airbag. During the process of harmful gas being transmitted into the airbag, the volume of the airbag continues to increase with the introduction of harmful gas, resulting in an increase in the squeezing force on the extrusion roller, causing the extrusion roller to move toward one side of the winding roller under the squeezing force of the airbag. When the slider drives the extrusion roller to move to one side, the telescopic spring is deformed and elongated, and the winding roller rotates in the opposite direction to partially release the wound airbag (the length of the released part is proportional to the moving distance of the slider on the slide rail). , the scroll spring is tightened, and as the harmful gas is continuously introduced, the position of the slider on the slide rail continuously moves to one side; the airbag is also provided with a conduit connected to the harmful gas treatment equipment, and the conduit is provided with a valve to control the amount of gas transmitted from the airbag to the harmful gas treatment equipment; when special cutting is required, only a single laser cutting head 17 on the first screw 14 can be used. When all cutting tasks are completed, the first servo motor 8 drives the lifting block 9 to rise, so that the laser cutting head 17 is away from the PCB board to avoid collision. The second servo motor 11 reverses and drives the first bidirectional screw 12 to separate the clamping plate 5, thereby releasing the fixation of the PCB board, and the operator takes out the cut PCB board from the support plate 4.

[0025] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A PCB circuit board multi-path cutting device, comprising a support base (1) and a residue trough vertically downwardly opened in the middle of the support base (1), characterized in that: A supporting mechanism is provided on the inner side of the support seat (1), and linear motors (2) are installed on both sides of the upper end of the support seat (1) relative to each other, a positioning mechanism is provided between the linear motors (2), and a moving seat (6) is movably installed on the linear motor (2), a lifting mechanism is installed in the moving seat (6), and lifting blocks (9) are vertically slidably installed between the moving seats (6), and a multi-path cutting mechanism is installed between the lifting blocks (9); An intelligent control component is provided inside the control box of the cutting device, and the intelligent control component includes an analysis module; The analysis module receives the data transmitted by the acquisition module, analyzes the gas concentration data, and determines whether the suction speed at the suction hood position needs to be adjusted. If adjustment is determined to be necessary, a speed control signal is generated and transmitted to the execution module; the other data transmitted by the acquisition module are analyzed to determine the relationship between the quality of pollutants treated by the treatment equipment and the gas concentration, control valve and airbag pressure.

2. The PCB multi-path cutting device according to claim 1, characterized in that: The supporting mechanism comprises U-shaped clamping blocks (3) fixedly connected to the inner wall of the residue trough on the support seat (1) at equal intervals, and a supporting plate (4) is inserted between the clamping blocks (3) on both sides.

3. The PCB multi-path cutting device according to claim 1, characterized in that: The lifting mechanism includes a column (7) fixedly connected to the upper end of the movable seat (6), a convex groove is provided on the opposite surface of the column (7), a second screw (15) is vertically rotatably installed in the convex groove, the second screw (15) is connected to the lifting block (9) through a thread, and a cover is provided on the upper end of the second screw (15), a first servo motor (8) is installed above the cover, and the output end of the first servo motor (8) passes through the cover and is clamped with the middle part of the top end of the second screw (15).

4. The PCB multi-path cutting device according to claim 3, characterized in that: One side of the lifting block (9) is fixedly connected to the connecting block (10), and a movable groove is provided at the lower ends of the lifting block (9) and the connecting block (10).

5. The PCB multi-path cutting device according to claim 4, characterized in that: The multi-path cutting mechanism comprises a second bidirectional screw (13) and a first screw (14) which are respectively mounted horizontally and rotatably in the lifting block (9) and the connecting block (10); a laser cutting head (17) is mounted on the upper ends of the second bidirectional screw (13) and the first screw (14); a driving motor (16) is mounted on one end of the lifting block (9) and the connecting block (10) corresponding to the second bidirectional screw (13) and the first screw (14); an output end of the driving motor (16) passes through the lifting block (9) and the connecting block (10) and is clamped with one end of the second bidirectional screw (13) and the first screw (14).

6. The PCB multi-path cutting device according to claim 5, characterized in that: The positioning mechanism includes a clamping groove provided at one end of the support seat (1), a first bidirectional screw (12) being rotatably mounted in the clamping groove, two ends of the first bidirectional screw (12) being relatively mounted with clamping plates (5) via threads, a second servo motor (11) being mounted on the support seat (1) corresponding to one end of the first bidirectional screw (12), an output end of the second servo motor (11) passing through the support seat (1) and being clamped to the middle of one end of the first bidirectional screw (12).

7. The PCB multi-path cutting device according to claim 5, characterized in that: The outer wall of the laser cutting head (17) is provided with an air suction hood via a connecting structure. A slide rail is provided at the upper and lower positions of one side of the outer wall of the support seat (1). A slider is slidably connected to the slide rail. A telescopic spring is connected to one end of the slider and the slide rail. An extrusion roller is provided between the two sliders. A support frame is provided at the position corresponding to the extrusion roller between the two sliders. A winding roller is provided on the support frame. An air suction device is also provided on the support frame. Both ends of the winding roller are connected to the support frame via a vortex spring. An air bag is provided at the position corresponding to the extrusion roller on the outer wall of the support seat (1). One end of the air bag is provided on the winding roller and is wound by the winding roller. The other end is provided on one end of the outer wall of the support seat (1). The air suction hood and the suction device, and the suction device and the air bag are connected via a conduit. A control valve is provided on the conduit.

8. The PCB multi-path cutting device according to claim 7, characterized in that: The intelligent control component also includes acquisition module, analysis module and execution module; The acquisition module collects the corresponding gas concentration data, the pollutant mass data at the location of the harmful gas treatment equipment, the gas flow rate, the control valve opening, the airbag pressure and volume data, and transmits the collected data to the analysis module; The execution module receives the speed control signal transmitted by the analysis module and distinguishes it. If the speed control signal is a speed-up signal / deceleration signal, the control valve between the corresponding suction hood and the suction equipment will be adjusted up / down, and the operation will be stopped when the amount of harmful gas generated reaches a stable level.

9. The PCB multi-path cutting device according to claim 1, characterized in that: The analysis module generates the speed regulation signal in the following steps: S1: Sort the gas concentration data detected at the hood position by acquisition time, and average the multiple gas concentration data detected at the same time. and standard deviation The calculated standard deviation and mean Detect data fluctuation range at corresponding moments The setting is to mark the test data that is not within the fluctuation range as an outlier, and then remove the outlier and average the remaining test data. Calculation of the mean value As the gas concentration data detected at that moment; S2: Gas concentration data detected at adjacent detection time points Calculate the difference to get the change in gas concentration , is the count from the time when the gas concentration is initially detected to the end time; if , then the harmful gas generation amount is determined to be stable; if , it is determined that the amount of harmful gas generated has increased, a speed-up signal is generated, and the speed-up signal is transmitted to the execution module; if , it is determined that the amount of harmful gas generated is reduced, a deceleration signal is generated, and the deceleration signal is transmitted to the execution module.

10. The PCB multi-path cutting device according to claim 1, characterized in that: The analysis module analyzes the relationship between the mass of pollutants processed by the treatment equipment and the gas concentration, control valve and airbag pressure as follows: K1: Unit time for harmful gas treatment equipment The pollutant quality data processed in the system are obtained and sorted according to the collection time, and then the pollutant quality data of the corresponding time are sorted. Substitute into the formula ,get and Specific value of processing flow , is the gas flow rate data, is the catheter cross-sectional area data; K2: Gas flow rate and control valve opening The relationship is: , is the flow coefficient related to the valve type, is the pressure difference on both sides of the control valve, is the gas density; K3: The relationship between airbag pressure and volume is: , and are the gas pressure in the airbag and the volume data of the airbag respectively, and are the pressure and volume data in the initial state respectively; thus, we can deduce , then the coupling relationship between the processing flow rate and gas concentration, the control valve and the air bag is: ; K4: In summary, the processing equipment unit time The relationship between the mass of pollutants treated internally and the gas concentration, control valve opening and airbag pressure is: .

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