Identification printing equipment for ceramic resistor

Abstract

The invention discloses identification printing equipment for a ceramic resistor, and relates to the field of code spraying and printing. According to the technical scheme, the device comprises an equipment box, a feeding assembly and a receiving assembly are assembled on the two sides of the equipment box correspondingly, and the feeding assembly and the receiving assembly are used for feeding and receiving correspondingly; the code spraying mechanism is assembled on the equipment box and is used for spraying and printing; the material guide groove is fixed on the equipment box and is used for guiding materials; the rotary adsorption mechanism is assembled below the material guide groove and is used for adsorbing the material belt; the acquisition unit is arranged on the equipment box and is used for acquiring working data in real time; and the quality analysis module calculates a code spraying quality index based on the work data formulation and compares the code spraying quality index with a preset code spraying quality index threshold value to judge whether the code spraying quality index is abnormal or not, when the material belt passes through the material guide groove, the material belt is rotationally adsorbed and fixed through the rotary adsorption mechanism, and the material belt passes through the material guide groove. The material belt conveying stability is improved, and the code spraying quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of inkjet printing, and more particularly to a marking printing device for ceramic resistors. Background Technology

[0002] After ceramic resistors are manufactured, key parameters such as production date and model number are printed on their surface to facilitate identification and traceability. Currently, most ceramic resistor surface markings are printed using inkjet printing. For example, an SMT tape automatic counting inkjet printer disclosed in authorization announcement number CN105690995B includes: a worktable, a receiving tensioning mechanism and an auxiliary receiving mechanism fixedly connected to both sides of the worktable for feeding and receiving materials, a tape conveying mechanism on the worktable for conveying tape between the receiving tensioning mechanism and the auxiliary receiving mechanism, a digital inkjet printing mechanism on the worktable for digitally printing on the SMT tape passing through the tape conveying mechanism, and a barcode printing mechanism on the worktable for printing barcode markings; This patent uses digital inkjet printing. However, inkjet printing currently has some problems. First, it uses a tape for feeding. Because the tape is tough, as the amount of material fed and taken back changes, the tape will bend and shift due to the change in the winding diameter of the feeding and taking back. This will cause the ceramic resistor to shift, affecting the printing quality. Secondly, fluctuations in workshop temperature and humidity can cause changes in ink viscosity, leading to stroke diffusion or incomplete drying, as well as unpredictable nozzle blockage. Traditional equipment relies on periodic shutdowns for cleaning, but sudden blockages, such as ink impurities, can cause missed spraying or broken lines, requiring manual intervention for troubleshooting. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a marking printing device for ceramic resistors, so as to improve the stability of material conveying, intelligently monitor working data, predict cleaning cycles, and reduce losses caused by downtime.

[0004] To achieve the above-mentioned technical objectives, the present invention provides a marking printing device for ceramic resistors: It includes: an equipment housing with a feeding assembly and a receiving assembly on each side, used for feeding and receiving materials respectively; a coding mechanism mounted on the equipment housing for printing; a guide trough fixed on the equipment housing for guiding materials; a rotary adsorption mechanism mounted below the guide trough for adsorbing the material strip; a data acquisition unit located on the equipment housing for real-time data acquisition; and a quality analysis module that calculates the coding quality index based on the working data and compares the coding quality index with a preset coding quality index threshold to determine whether there are any abnormalities.

[0005] Preferably, it further includes: a dynamic adjustment module, used to input working data into the trained dynamic adjustment model and output a target voltage, the target voltage being used as the working parameter of the inkjet printing mechanism; and a prediction module, used to predict the cleaning cycle based on the working data and maintain the inkjet printing mechanism based on the cleaning cycle.

[0006] Preferably, the receiving assembly includes: a support frame fixed to the equipment box; a receiving shaft rotatably connected to the support frame, with a first fixing nut and a second fixing nut sleeved on the outer surface of the receiving shaft, and both the first fixing nut and the second fixing nut being threadedly connected to the receiving shaft; and a first servo motor fixed to the support frame, with the output end of the first servo motor fixedly connected to the end of the receiving shaft.

[0007] Preferably, the feeding assembly and the receiving assembly have the same structure, and the feeding assembly and the receiving assembly are respectively equipped with a feeding tray and a receiving tray, both of which are used to wind the material strip.

[0008] Preferably, the coding mechanism includes: a fixed rod with a printhead fixedly fitted at the bottom; and a support assembly, which includes a support rod, a connecting rod, and an electric actuator. The support rod is fixed to the equipment housing, the connecting rod is slidably connected to the outer surface of the support rod, the electric actuator is fixed to the equipment housing, and the output end of the electric actuator is fixedly connected to the connecting rod. The fixed rod is fixed to the connecting rod.

[0009] Preferably, a vibrator is fixed to the outer surface of the nozzle, a connecting cylinder is fixed to the top of the nozzle, a quick connector is sleeved on the outer surface of the fixing rod, a magnetic ring is embedded in the bottom of the inner wall of the quick connector, and the quick connector is magnetically connected to the fixing rod through the magnetic ring. A first damping ring and a second damping ring are sleeved on the outer surface of the quick connector, and a fixing sleeve is threaded to the outer surface of the connecting cylinder, and the inner wall of the fixing sleeve abuts against the first damping ring and the second damping ring.

[0010] Preferably, the rotary adsorption mechanism includes: an air guide pipe, fixedly connected to the equipment box; an air distribution pipe, sleeved on the air guide pipe and rotatably and sealingly connected to the air guide pipe, with air distribution plates uniformly fixed on the outer surface of the air distribution pipe, multiple air distribution plates intermittently communicating with the inner cavity of the air guide pipe, a through groove opened through the outer surface of the material guide trough, the top of the air distribution plate penetrating through the through groove and flush with the bottom of the inner wall of the through groove; a second servo motor, fixed on the equipment box, with a drive gear fixed at the output end, and a driven gear sleeved on the outer surface of the air distribution pipe, and the driven gear meshing with the drive gear.

[0011] Preferably, an air guide tube is fixed through the outer surface of the air guide tube, and an air passage groove is provided on the inner wall of the air guide tube. The air guide tube is intermittently connected to the air distribution plate through the air passage groove.

[0012] Preferably, a stop ball is slidably connected inside the air guide cylinder, the stop ball is used to seal the end of the air guide cylinder, and a spring is provided inside the air guide cylinder.

[0013] Preferably, an air guide groove is provided on the inner wall of the air distribution pipe, and the plug ball is slidably and sealed to the air guide groove. Air guide plates are uniformly embedded and fixed on the outer surface of the air distribution pipe, and the air guide plates pass through the air distribution pipe and are located in the air guide groove.

[0014] As can be seen from the above technical solutions, this application has the following beneficial effects: 1: By assembling a rotary adsorption mechanism below the guide chute, the material belt is rotated and adsorbed to fix the material belt when it passes through the guide chute, thereby improving the stability of the material belt conveying and ensuring the quality of inkjet printing.

[0015] 2: By collecting working data in real time, the inkjet printing quality index is calculated based on the formula of the working data, and the inkjet printing quality index is compared with the preset inkjet printing quality index threshold to determine whether to issue an adjustment instruction. The cleaning cycle is predicted based on the working data, and the inkjet printing mechanism is maintained based on the cleaning cycle to reduce losses caused by downtime. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a marking printing device for ceramic resistors provided by the present invention; Figure 2 A side view of a marking printing device for ceramic resistors provided by the present invention; Figure 3 A schematic cross-sectional view of the fixing rod and printhead of a marking printing device for ceramic resistors provided by the present invention; Figure 4 A schematic diagram of the overall structure of the rotating adsorption mechanism of the marking printing device for ceramic resistors provided by the present invention; Figure 5 A partial cross-sectional view of the rotating adsorption mechanism of a marking printing device for ceramic resistors provided by the present invention; Figure 6 This invention provides a partial cross-sectional view of the gas distribution pipe of a marking printing device for ceramic resistors. Figure 7 A partial cross-sectional view of the air duct structure of a marking printing device for ceramic resistors provided by the present invention; Figure 8 This invention provides a schematic diagram of the dynamic adjustment module structure of a marking printing device for ceramic resistors.

[0018] Figure Descriptions: 1. Equipment box; 2. Feeding assembly; 3. Feeding tray; 4. Receiving assembly; 41. Support frame; 42. Receiving shaft; 43. First fixing nut; 44. Second fixing nut; 45. First servo motor; 5. Receiving tray; 6. Inkjet printing mechanism; 61. Fixing rod; 62. Printhead; 621. Vibrator; 622. Quick connector; 623. Connecting cylinder; 624. Fixing sleeve; 625. Magnetic ring; 626. First shock-absorbing ring; 627. The... 63. Shock-absorbing ring; 631. Support assembly; 632. Support rod; 633. Connecting rod; 634. Electric actuator; 7. Guide chute; 71. Through chute; 8. Rotary adsorption mechanism; 81. Air guide pipe; 811. Air guide tube; 8111. Blocking ball; 8112. Spring; 8113. Air vent; 82. Air distribution pipe; 821. Air guide plate; 822. Air guide chute; 83. Air distribution plate; 84. Second servo motor; 841. Drive gear; 842. Driven gear. Detailed Implementation

[0019] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of the various embodiments of this disclosure. Certain details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures.

[0020] Example 1, see Figures 1-7 As shown, a marking printing device for ceramic resistors includes an equipment box 1, a feeding assembly 2, a feeding tray 3, a receiving assembly 4, a receiving tray 5, a coding mechanism 6, a guide trough 7, and a rotary adsorption mechanism 8. The feeding assembly 2 and the receiving assembly 4 are respectively mounted on both sides of the equipment box 1, and are used for feeding and receiving materials, respectively. The feeding tray 3 and the receiving tray 5 are respectively mounted on the feeding assembly 2 and the receiving assembly 4, and are both used for winding the material tape. The coding mechanism 6 is mounted on the equipment box 1 and is used for printing. The guide trough 7 is fixed to the equipment box 1 and is used for guiding the material. The rotary adsorption mechanism 8 is mounted below the guide trough 7 and is used to adsorb the material tape, improving the stability during printing.

[0021] For example, the material tape with the ceramic resistor attached is wound on the feeding tray 3 and then fixed on the receiving tray 5. The fixing method is such as attaching and fixing it to the receiving tray 5 with electrostatic tape. The feeding component 2 and the receiving component 4 feed and receive the material respectively, so that the material tape carrying the ceramic resistor passes through the inkjet printing mechanism 6 for inkjet printing.

[0022] Specifically, the receiving assembly 4 includes: a support frame 41, fixed on the equipment box 1; a receiving shaft 42, rotatably connected to the support frame 41, with a first fixing nut 43 and a second fixing nut 44 sleeved on the outer surface of the receiving shaft 42, and both the first fixing nut 43 and the second fixing nut 44 being threadedly connected to the receiving shaft 42; a first servo motor 45, fixed on the support frame 41, and the output end of the first servo motor 45 being fixedly connected to the end of the receiving shaft 42; the discharging assembly 2 has the same structure as the receiving assembly 4; for example, the first servo motor 45 operates, driving the receiving disc 5 to rotate through the receiving shaft 42, causing the receiving disc 5 to move the material belt within the guide groove 7. The discharging principle of the discharging assembly 2 is the same. The first fixing nut 43 and the second fixing nut 44 are used to fix the receiving disc 5. The receiving disc 5 can be replaced by removing the second fixing nut 44, and the position of the receiving disc 5 can be changed by adjusting the position of the first fixing nut 43.

[0023] More specifically, the coding mechanism 6 includes: a fixed rod 61 with a printhead 62 fixedly attached to its bottom; and a support assembly 63, which includes a support rod 631, a connecting rod 632, and an electric actuator 633. The support rod 631 is fixed to the equipment box 1, the connecting rod 632 is slidably connected to the outer surface of the support rod 631, the electric actuator 633 is fixed to the equipment box 1, and the output end of the electric actuator 633 is fixedly connected to the connecting rod 632. The fixed rod 61 is fixed to the connecting rod 632. For example, the height of the connecting rod 632 can be adjusted by extending or retracting the electric actuator 633, thereby adjusting the height of the nozzle 62 via the fixing rod 61.

[0024] It should be noted that the end of the fixing rod 61 is provided with an ink supply tube and a wiring harness to provide ink and power to the printhead 62. The printhead 62 uses the deformation of the piezoelectric ceramic sheet to squeeze the ink cavity and precisely control the ink droplet volume for printing. The specific ink supply method and the printing principle of the printhead 62 are known and publicly available technologies, and are not specifically limited here.

[0025] Furthermore, a vibrator 621 is fixed on the outer surface of the printhead 62. The vibrator 621 is used to provide high-frequency vibration to clean the printhead 62. In some embodiments, automatic cleaning can also be achieved by using a dual ink supply tube, such as one ink supply tube for supplying ink and the other ink supply tube for providing cleaning agent for rinsing. The specific cleaning method is not limited here. See Figure 3As shown, a connecting cylinder 623 is fixed to the top of the nozzle 62, and a quick connector 622 is sleeved on the outer surface of the fixing rod 61. A magnetic ring 625 is embedded in the bottom of the inner wall of the quick connector 622, and the quick connector 622 is magnetically connected to the fixing rod 61 through the magnetic ring 625, which facilitates the connection and fixation of the quick connector 622 and the fixing rod 61. In some embodiments, the quick connector 622 can also be connected and fixed to the fixing rod 61 by a snap-fit ​​method. The quick connector 622 is electrically connected to the fixing rod 61 through metal contacts, and the quick connector 622 is connected to the nozzle via a flexible connector (FFC). The head 62 is electrically connected; the outer surface of the quick connector 622 is fitted with a first shock-absorbing ring 626 and a second shock-absorbing ring 627. Both the first shock-absorbing ring 626 and the second shock-absorbing ring 627 are made of rubber, which is used for shock absorption and buffering by the deformation of the rubber. The outer surface of the connecting cylinder 623 is connected to a fixed sleeve 624 by threads, and the inner wall of the fixed sleeve 624 abuts against the first shock-absorbing ring 626 and the second shock-absorbing ring 627. The purpose is that when the vibrator 621 drives the nozzle 62 to vibrate and clean at high frequency, it will not affect the quick connector 622, thereby not affecting the power supply of the nozzle 62.

[0026] For details, please refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the rotary adsorption mechanism 8 includes: a gas guide pipe 81, fixedly connected to the equipment box 1; a gas distribution pipe 82, sleeved on the gas guide pipe 81 and rotatably and sealingly connected to the gas guide pipe 81, with gas distribution plates 83 evenly fixed on the outer surface of the gas distribution pipe 82, and multiple gas distribution plates 83 intermittently communicating with the inner cavity of the gas guide pipe 81; a through groove 71 is opened through the outer surface of the material guide trough 7, and the top of the gas distribution plate 83 passes through the through groove 71 and is flush with the bottom of the inner wall of the through groove 71; a second servo motor 84, fixed on the equipment box 1, outputting... A drive gear 841 is fixed at one end, and a driven gear 842 is sleeved on the outer surface of the air distribution pipe 82. The driven gear 842 meshes with the drive gear 841. The second servo motor 84 drives the driven gear 842 to rotate through the drive gear 841. The driven gear 842 can then drive the air distribution plate 83 to rotate through the air distribution pipe 82. The end of the air guide pipe 81 is connected to the air pump through a hose, thereby extracting the gas in the air distribution plate 83, so that the air distribution plate 83 can adsorb the material belt and improve the stability of the material belt in the guide trough 7.

[0027] Specifically, an air guide tube 811 is fixedly fixed through the outer surface of the air guide pipe 81. An air venting groove 8113 is formed on the inner wall of the air guide tube 811, and the air guide pipe 81 is intermittently connected to the air distribution plate 83 through the air venting groove 8113. A stopper ball 8111 is slidably connected inside the air guide tube 811, used to seal the end of the air guide tube 811. A spring 8112 is provided inside the air guide tube 811. An air guide groove 822 is formed on the inner wall of the air distribution pipe 82, and the stopper ball 8111 is slidably and sealingly connected to the air guide groove 822. Air guide plates 821 are uniformly embedded and fixed on the outer surface of the air distribution pipe 82, and the air guide... The plate 821 penetrates the air distribution pipe 82 and is located in the air guide groove 822. For example, the surface of the air guide plate 821 has a through hole for air passage, and the bottom of the air guide plate 821 is raised. When the air guide pipe 81 rotates, when the blocking ball 8111 contacts the bottom protrusion of the air guide plate 821, the blocking ball 8111 is squeezed and retracted into the air guide cylinder 811, creating a gap between the blocking ball and the air guide cylinder 811. The gas can then flow between the air guide pipe 81 and the air distribution plate 83 through the air passage groove 8113. The purpose is to ensure that only the air distribution plate 83, which is in contact with the material belt, will connect with the air guide pipe 81 each time to generate suction.

[0028] Example 2, see Figure 8 As shown, based on Embodiment 1, a marking printing device for ceramic resistors includes a data acquisition unit, a quality analysis module, a dynamic adjustment module, and a prediction module, wherein the modules are connected by wired and / or wireless means.

[0029] Specifically, the acquisition unit is installed on the equipment box 1 to collect working data in real time. The working data includes temperature, humidity, initial voltage, ink pressure, working current, and inkjet image data. The acquisition unit includes a temperature sensor, a humidity sensor, and a line scan camera. The temperature and humidity sensors are installed around the inkjet printing mechanism 6 to collect the temperature and humidity values ​​around the inkjet printing mechanism 6, respectively. The specific location is within the range that affects the operation of the inkjet printing mechanism 6, which is not specifically limited here. The line scan camera is installed above the material guide trough 7 to collect the surface marking image of the ceramic resistor after inkjet printing. It is worth mentioning that the initial voltage and ink pressure are provided by the driver or control unit of the printhead 62, which will not be elaborated on here.

[0030] The quality analysis module calculates the inkjet quality index based on the working data formula and compares the inkjet quality index with the preset inkjet quality index threshold to determine whether it is abnormal. If it is determined to be normal, the prediction module continuously monitors and predicts the cleaning cycle; if it is determined to be abnormal, the dynamic adjustment module generates the adjustment voltage of the printhead 62, adjusts the working parameters of the printhead 62, and improves the printing quality. Furthermore, in some embodiments, the printing quality is continuously monitored. If the printing quality still does not improve after adjusting the voltage of the printhead 62 generated by the dynamic adjustment module, cleaning is performed immediately. If the printing quality still does not improve after cleaning, an alarm is triggered, and staff come to replace the printhead 62.

[0031] Specifically, the dynamic adjustment module is used to input working data into the trained dynamic adjustment model and output the target voltage, which serves as the working parameter of the inkjet printing mechanism 6; the prediction module is used to predict the cleaning cycle based on the working data and maintain the inkjet printing mechanism 6 based on the cleaning cycle.

[0032] More specifically, the acquisition unit collects working data in real time, including: temperature value T, humidity value H, inkjet image data, near-infrared reflectivity R, and printhead drive current I; the inkjet image data specifically consists of the stroke width and color density of the marking, which is obtained through the analysis of the grayscale values ​​of the image pixels, and will not be elaborated on here. The formula for calculating the inkjet printing quality index in the quality analysis module is as follows:

[0033] Where Q is the inkjet printing quality index. The standard deviation of stroke width is extracted using an image edge detection algorithm. Color density deviation was obtained based on a comparison of the HSV color space standard color chart. The curing reflectance was obtained by measuring with a near-infrared sensor. , and For respectively , and Weighting coefficients; Compare the inkjet quality index with the preset inkjet quality index threshold. Perform a comparison to determine if there is an anomaly: If If it is, then it is judged as abnormal. If the result is normal, it is considered normal. The preset inkjet quality index threshold is determined by those skilled in the art based on the actual situation, and no specific limit is made here.

[0034] Specifically, in the quality analysis module, the standard deviation of stroke width... Calculated using the following formula:

[0035] in, For the first The measured width of each stroke was obtained from sub-pixel measurements of the image from the line scan camera. Average width, Total number of strokes per character; color density deviation Calculated using the grayscale conversion formula:

[0036] This is the real-time grayscale value. The grayscale value is the standard color chart value. Cured reflectivity The data is obtained from measurements taken by a near-infrared sensor, and the calculation formula is as follows:

[0037] For the incident light intensity, The intensity of the reflected light.

[0038] Specifically, the method for dynamically adjusting the model is as follows: Historical datasets were collected under experimental conditions. These datasets included working data and time-series data. Working data included temperature, humidity, initial voltage, ink pressure, working current, average stroke width, color density, and reflectivity. Time-series data consisted of continuously collected working data in chronological order. First, the working data was normalized. Then, the time-series data was divided into sample sequences using a 60-second sliding window, with each sample corresponding to a target voltage value (i.e., the measured voltage value corresponding to the optimal coding quality within that time period). Subsequently, an LSTM+GNN hybrid model was constructed, where the LSTM layer (128 hidden units, 60 time steps) extracted the time-series data. The model employs a GNN layer (two layers of graph convolution, edge weights determined by the Pearson correlation coefficient between features, and mean pooling as the aggregation function) to model the nonlinear relationship between parameters. A fully connected layer outputs the predicted target voltage. During training, an Adam optimizer (learning rate 0.001, batch size 64) is used, with the loss function being the mean square error (MSE) between the predicted and actual voltages. A stability regularization term is added to penalize voltage spikes exceeding 5V between adjacent time periods. Training terminates when the validation set loss decreases by less than 1% for 10 consecutive rounds or when the total training rounds reach 500. The final model can output a single-valued target voltage based on real-time input parameters.

[0039] The specific prediction methods of the prediction module include: Health Index (HI) Calculation Formula:

[0040] in, The current deviation weight represents the degree to which current changes affect the health of the nozzle. For example... This means that abnormal current contributes 60% to the decline in the health index, which is determined by those skilled in the art through historical data analysis, and is not specifically limited here. For example, in 100 cases of nozzle failure, current deviation accounts for 60% of the problems. The weighting of the number of blockages indicates the impact of blockage frequency on health, for example, The statement indicates that blockage issues account for 40% of health risks. This figure is set by those skilled in the art based on statistical analysis of the correlation between blockage events and health status across multiple cleaning records, and is not specifically limited here. , This is the initial normal current of the nozzle, determined by the factory calibration value. It monitors the operating current in real time; This refers to the number of times the nozzle has been clogged in history. This is the total number of prints, all obtained from printing equipment logs or staff statistics.

[0041] The formula for predicting the cleaning cycle C is:

[0042] in, This is a scale parameter that determines the base time unit for the cleaning cycle, for example... The basic unit of time is The number of hours is calculated by those skilled in the art by fitting historical maintenance data; (For shape parameters).

[0043] This embodiment monitors print quality in real time. When print quality is normal, it predicts the cleaning cycle of printhead 62 to avoid over-cleaning or under-cleaning. When print quality is abnormal, it adjusts the working voltage of printhead 62 in time to avoid affecting print quality and causing problems such as missed prints, incorrect prints, and blurry prints.

[0044] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A marking printing device for ceramic resistors, characterized in that, include: The equipment box (1) is equipped with a feeding assembly (2) and a receiving assembly (4) on both sides respectively. The feeding assembly (2) and the receiving assembly (4) are used for feeding and receiving materials respectively. The coding mechanism (6) is mounted on the equipment box (1) and is used for printing; The material guide chute (7) is fixed on the equipment box (1) and is used for guiding materials; A rotary adsorption mechanism (8) is installed below the guide trough (7) and is used to adsorb the material belt; The data acquisition unit is installed on the equipment box (1) and is used to collect working data in real time. The quality analysis module calculates the inkjet printing quality index based on working data and compares the inkjet printing quality index with a preset inkjet printing quality index threshold to determine whether there is an anomaly.

2. The marking printing device for ceramic resistors according to claim 1, characterized in that, Also includes: The dynamic adjustment module is used to input working data into the trained dynamic adjustment model and output the target voltage, which serves as the working parameter of the inkjet printing mechanism (6). The prediction module is used to predict the cleaning cycle based on the working data and maintain the inkjet printing mechanism (6) based on the cleaning cycle.

3. A marking printing device for ceramic resistors according to claim 1, characterized in that, The receiving assembly (4) includes: The support frame (41) is fixed to the equipment box (1); The take-up shaft (42) is rotatably connected to the support frame (41). The outer surface of the take-up shaft (42) is fitted with a first fixing nut (43) and a second fixing nut (44), and both the first fixing nut (43) and the second fixing nut (44) are threadedly connected to the take-up shaft (42). The first servo motor (45) is fixed on the support frame (41), and the output end of the first servo motor (45) is fixedly connected to the end of the receiving shaft (42).

4. A marking printing device for ceramic resistors according to claim 2, characterized in that, The feeding assembly (2) and the receiving assembly (4) have the same structure. The feeding assembly (2) and the receiving assembly (4) are respectively equipped with a feeding tray (3) and a receiving tray (5). Both the feeding tray (3) and the receiving tray (5) are used to wind the material strip.

5. A marking printing device for ceramic resistors according to claim 1, characterized in that, The coding mechanism (6) includes: A fixing rod (61) has a nozzle (62) fixedly attached to its bottom; The support assembly (63) includes a support rod (631), a connecting rod (632) and an electric actuator (633). The support rod (631) is fixed on the equipment box (1). The connecting rod (632) is slidably connected to the outer surface of the support rod (631). The electric actuator (633) is fixed on the equipment box (1) and the output end of the electric actuator (633) is fixedly connected to the connecting rod (632). The fixing rod (61) is fixed on the connecting rod (632).

6. A marking printing device for ceramic resistors according to claim 5, characterized in that, A vibrator (621) is fixed on the outer surface of the nozzle (62), a connecting cylinder (623) is fixed on the top of the nozzle (62), a quick connector (622) is sleeved on the outer surface of the fixing rod (61), a magnetic ring (625) is embedded in the bottom of the inner wall of the quick connector (622), and the quick connector (622) is magnetically connected to the fixing rod (61) through the magnetic ring (625). A first damping ring (626) and a second damping ring (627) are sleeved on the outer surface of the quick connector (622), and a fixing sleeve (624) is threaded on the outer surface of the connecting cylinder (623), and the inner wall of the fixing sleeve (624) abuts against the first damping ring (626) and the second damping ring (627).

7. A marking printing device for ceramic resistors according to claim 1, characterized in that, The rotary adsorption mechanism (8) includes: The air duct (81) is fixedly connected to the equipment box (1); The gas distribution pipe (82) is sleeved on the gas guide pipe (81) and rotated and sealed to the gas guide pipe (81). The outer surface of the gas distribution pipe (82) is uniformly fixed with gas distribution plates (83). Multiple gas distribution plates (83) are intermittently connected to the inner cavity of the gas guide pipe (81). The outer surface of the material guide trough (7) is provided with a through groove (71). The top of the gas distribution plate (83) passes through the through groove (71) and is flush with the bottom of the inner wall of the through groove (71). The second servo motor (84) is fixed on the equipment box (1), and the output end is fixed with a drive gear (841). The outer surface of the air distribution pipe (82) is fitted with a driven gear (842), and the driven gear (842) meshes with the drive gear (841).

8. A marking printing device for ceramic resistors according to claim 7, characterized in that, An air guide tube (811) is fixed through the outer surface of the air guide tube (81). An air passage groove (8113) is opened on the inner wall of the air guide tube (811). The air guide tube (81) is intermittently connected to the air distribution plate (83) through the air passage groove (8113).

9. A marking printing device for ceramic resistors according to claim 8, characterized in that, A ball stopper (8111) is slidably connected inside the air guide tube (811). The ball stopper (8111) is used to seal the end of the air guide tube (811). A spring (8112) is provided inside the air guide tube (811).

10. A marking printing device for ceramic resistors according to claim 9, characterized in that, An air guide groove (822) is provided on the inner wall of the air distribution pipe (82), and the plug ball (8111) is slidably sealed to the air guide groove (822). An air guide plate (821) is uniformly embedded and fixed on the outer surface of the air distribution pipe (82), and the air guide plate (821) passes through the air distribution pipe (82) and is located in the air guide groove (822).

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