Cigarette making unit fine cigarette laser drilling blockage early warning system and detection method

Abstract

The invention belongs to the technical field of tobacco processing equipment, and relates to a cigarette making machine set fine cigarette laser drilling blockage early warning system and a detection method, a visual detection module collects an image of a gap between a laser drilling device and a drum wheel in real time and transmits the image to a visual detection control module, and the visual detection control module judges blockage abnormity through an exclusive recognition algorithm and sends the image to a cigarette making machine set. A signal is output to the PLC control module, a program of the PLC control module drives the relay module, a contact of the relay module is switched on and off to drive the original machine removing mechanism to remove unqualified products, the blowing device is controlled to clean blocked cigarettes, and the alarm device is triggered to give an early warning; the full-process closed loop of'detection-disposal-early warning-management and control 'of blockage abnormity is realized, and the method is adaptive to cigarette products of multiple specifications and is high in compatibility; according to the invention, the problem of laser drilling blockage detection can be solved, the product quality and the production efficiency can be improved, the failure rate and the maintenance cost of equipment are reduced, and the method has popularization and application values.

Description

Technical Field

[0001] This invention belongs to the technical field of tobacco processing equipment, specifically relating to a laser perforation blockage early warning system and detection method for thin cigarettes in a cigarette making machine. Background Technology

[0002] Laser perforation technology is a key process in cigarette production for reducing tar and harm, and stabilizing core product quality. It uses high-energy lasers to create precise micropores on the tipping paper to adjust ventilation, thereby controlling draw resistance and the consistency of smoke flavor. This is particularly important for the quality control of slim cigarettes. Compared to conventional cigarettes, the slender shape of slim cigarettes means that the dimensional accuracy and uniformity of the perforation channels have a more significant impact on combustion, ventilation, and sensory experience. Any abnormalities in the perforation process can amplify ventilation deviations and combustion anomalies, easily leading to defects in tipping quality and batch-wide quality fluctuations, posing a significant challenge to production control.

[0003] In current slim cigarette production practices, mainstream cigarette rolling units such as the ZJ17, when equipped with laser perforation devices, generally face a process challenge caused by cigarette blockage. During production, long cigarettes are easily accidentally thrown into the gap between the laser perforation device and the drum. If this blocked cigarette obstructs the laser beam path, it will directly result in cigarettes produced within that time period lacking laser perforation, creating a serious quality defect. Because the perforations in slim cigarettes are tiny, such defects with no or few perforations are difficult to detect promptly and comprehensively during post-production sampling inspections, easily creating blind spots in quality control and allowing substandard products to enter subsequent stages.

[0004] More seriously, cigarettes blocking the laser beam for extended periods can cause sparks, posing incalculable risks such as equipment damage and production safety. Even if operators promptly detect the blockage, manual cleaning and discarding of un-drilled cigarettes are necessary. If the blockage persists for a long time, machine shutdown is required, significantly increasing cigarette consumption and severely impacting equipment efficiency. Industry production data shows that downtime losses and discarded cigarettes due to such blockages account for a significant proportion of production costs, becoming a key bottleneck restricting the efficient and high-quality production of slim cigarettes.

[0005] However, current quality control of laser drilling relies heavily on manual inspections and post-processing sampling, lacking real-time monitoring of the gap between the drilling device and the drum, making it difficult to promptly warn and address blockages. While some laser drilling equipment possesses basic parameter monitoring functions, they can only monitor process parameters such as laser power and pulse length, failing to identify sudden mechanical malfunctions like cigarette blockage. This situation is exacerbated by the increasing demands for production efficiency and quality stability in the cigarette industry, and the continued expansion of the slim cigarette market.

[0006] Therefore, a technical solution is needed that can detect the blockage status of the laser drilling device in real time and handle it automatically, in order to solve common technical problems in the industry such as the lag in manual monitoring, low efficiency in fault handling, and accumulation of quality risks, and to provide technical support for the precise control of the laser drilling process for slim cigarettes. Summary of the Invention

[0007] This invention provides the following technical solution: a laser-drilled cigarette machine unit clogging early warning system, comprising: The visual inspection module is used to acquire images of the double-length filter tip and the inner tobacco tip of the double-length cigarette between the laser drilling wheel and the laser drilling machine in real time.

[0008] The vision inspection control module is used to collect the original machine's synchronization signal for the vision inspection module to synchronously acquire images, and also to transmit the images fed back by the vision inspection module to the human-machine interface.

[0009] The PLC control module is used to send abnormal status signals from the feedback image of the vision inspection module to the relay module, and also to shield non-abnormal image information from the feedback image of the vision inspection module, including tobacco splatter.

[0010] The power supply module is used to supply power to modules other than the rejection module and the shutdown module.

[0011] The relay module is used to receive abnormal status signals from the PLC control module and control the on / off state of the relay coil.

[0012] The human-machine interface is used for the transmission, dialogue, and exchange of laser drilling blockage information and control commands between humans and machines.

[0013] The rejection module is used to reject defective cigarettes that are blocked during laser drilling.

[0014] The shutdown module is used to send a shutdown signal to stop the equipment when the laser drilling becomes clogged.

[0015] The alarm module is used to issue an audible and visual alarm when laser drilling becomes clogged.

[0016] The solenoid valve module is used to control the start and stop of the air blowing module.

[0017] The air blowing module is used to emit high-speed airflow to clear blockages during laser drilling.

[0018] The original power supply module is used to supply power to the rejection module and the shutdown module.

[0019] The vision inspection module is connected in series with the vision inspection control module, PLC control module, and relay module, and then electrically connected to the stop module. The human-machine interface is electrically connected to the vision inspection module. The relay module is electrically connected to the rejection module, alarm module, and solenoid valve module respectively. The solenoid valve module is electrically connected to the air blowing module. The power supply module is electrically connected to the human-machine interface, vision inspection module, vision inspection control module, PLC control module, relay module, alarm module, and solenoid valve module. The original power supply module is electrically connected to the rejection module and stop module.

[0020] Preferably, the visual inspection module includes a bracket and a camera. The bracket is fixed to the original machine frame, and the camera is detachably connected to the bracket. The camera's shooting direction is towards the smoke-dispensing wheel between the laser drilling wheel and the laser drill, which drives the double-long cigarettes to be drilled. The camera can be stably and flexibly installed in a suitable position to accurately capture relevant images of the double-long cigarettes. The detachable connection facilitates maintenance, replacement, or adjustment of the camera's shooting angle to adapt to different production environments and equipment layouts. The shooting direction towards the smoke-dispensing wheel allows for comprehensive and clear acquisition of the state of the double-long cigarettes during the laser drilling process, including the condition of the double-long filter ends and the inner tobacco ends, providing crucial image data for the subsequent visual inspection and control module to accurately determine whether there is any blockage or abnormality. This design enables the visual inspection module to efficiently and accurately complete the image acquisition task, laying a solid foundation for the stable operation and accurate detection of the entire early warning system. Simultaneously, this structural design also facilitates collaborative work with other modules. For example, the image information captured by the camera can be fed back to the vision inspection and control module in a timely and accurate manner. The vision inspection and control module then analyzes and processes this image information, accurately transmitting abnormal status signals to the PLC control module. This, in turn, drives subsequent relay modules, rejection modules, and shutdown modules to perform corresponding operations, enabling timely detection and effective handling of laser drilling blockage anomalies. Moreover, due to its rational structure and adjustability, this vision inspection module can better adapt to different specifications of cigarette products and diverse production needs, further improving the compatibility and practicality of the entire early warning system. More preferably, the air blowing module includes an air blowing port with a detachable connecting bracket. The air blowing direction of the air blowing port faces the laser beam path of the laser drill. When laser drilling becomes clogged, the air blowing port can precisely blow high-speed airflow towards the clogged area, effectively clearing the blockage and ensuring the smooth flow of the laser beam path. The detachable connecting bracket design facilitates adjustment, maintenance, and replacement of the air blowing port. If the air blowing port becomes worn or clogged during use, or if the air blowing direction and angle need to be adjusted according to different production conditions, operators can easily and quickly perform the operation without complicated tools and cumbersome procedures, greatly improving the maintainability and flexibility of the equipment. The air blowing direction facing the laser beam path of the laser drill is carefully designed and optimized. This design ensures that the high-speed airflow acts on the blockage at the optimal angle and force, maximizing the cleaning effect of the air blowing module. When obstructions such as cigarettes block the laser beam path, the high-speed airflow can quickly blow them away, avoiding abnormal cigarette drilling and quality problems caused by blockage. Moreover, this precise airflow direction reduces the impact on other components, minimizes airflow interference with surrounding equipment and cigarettes, and ensures the stability and reliability of the production process. Furthermore, the airflow module works closely with other modules to handle laser drilling blockage anomalies. When the vision detection module detects a blockage and transmits the signal to the PLC control module, the PLC control module controls the solenoid valve module to activate the airflow module via the relay module. Upon receiving the activation signal, the airflow module quickly emits a high-speed airflow to clear the blockage. Simultaneously, the rejection module promptly removes defective cigarettes, the alarm module issues an audible and visual alarm to alert operators, and the shutdown module stops the equipment if the anomaly persists for an extended period, preventing the production of batches of defective products. The entire system forms an efficient and collaborative working mechanism, achieving comprehensive and automated handling of laser drilling blockage anomalies, significantly improving the quality and efficiency of cigarette production, and reducing equipment failure rates and maintenance costs. Preferably, the air inlet is located on the lower side of the camera.

[0021] More preferably, the airflow direction of the air outlet is tangent to the outer circumference of the laser drilling wheel. This allows the high-speed airflow to act on the laser beam path along the outer circumference of the laser drilling wheel, and this airflow direction design can better conform to the movement trajectory of the cigarette. When the cigarette is being drilled on the laser drilling wheel, the tangent airflow direction allows the high-speed airflow to more effectively blow away foreign objects blocking the laser beam path, such as cigarette clippings or tipping paper, along the direction of the cigarette's movement, reducing obstruction to the normal movement of the cigarette and lowering the risk of cigarette displacement or damage due to airflow interference. In addition, this tangent airflow direction makes the airflow smoother when clearing blockages, avoiding turbulence and backflow caused by unreasonable airflow direction. Smooth airflow can further improve the efficiency of clearing blockages, reduce the time when laser drilling is blocked, and reduce the probability of quality defects such as no holes or few holes in the cigarette due to blockage. At the same time, it reduces the potential impact of turbulence on other components of the equipment and reduces equipment failure and wear and tear that may be caused by airflow fluctuations.

[0022] Preferably, the blockage material includes: a flying cigarette or cork paper.

[0023] This invention also discloses a method for detecting blockages caused by laser drilling in cigarette making machines. This method employs the aforementioned laser drilling blockage early warning system and includes the following steps: Step S1: The vision detection module acquires images of the double-length filter tip and the inner tobacco tip of the double-length cigarette between the laser drilling wheel and the laser drilling machine. When there are foreign objects in these two areas, the vision detection control module sends the abnormal signal output by the vision detection module to the PLC control module.

[0024] Step S2: The PLC control module synchronously acquires the high-speed operation signal of the original equipment, and obtains the laser drilling blockage information after filtering out false detection information.

[0025] Step S3: The PLC control module sends a signal to the relay module, which controls the rejection module, shutdown module, alarm module, solenoid valve module, and air blowing module. Each module performs the rejection operation, shutdown operation, air blowing operation, and alarm operation respectively.

[0026] Preferably, in step S3, the rejection operation, shutdown operation, and air blowing operation correspond to different alarm operation audio-visual signals. Different alarm operation audio-visual signals allow operators to quickly determine the specific operation being performed and the severity of the blockage based on the different signals. For the rejection operation, the audio-visual signal can be set to a relatively rapid flashing light and a high-frequency beeping sound, reminding the operator that a defective cigarette has been rejected and that the cigarette quality needs to be monitored. The shutdown operation can use a stronger flashing light and a low-frequency but loud alarm sound to highlight that the equipment has stopped and that the blockage needs to be addressed promptly to avoid prolonged downtime affecting production efficiency. The air blowing operation can use a relatively soft flashing light and a mid-frequency prompt sound to inform the operator that the air blowing module is working and attempting to clear the blockage. Different audio-visual signals also help operators quickly identify the operation type in a noisy production environment. In a cigarette production workshop, the operation of machinery generates considerable noise, and relying solely on sound may not be sufficient to accurately determine the operation status. By using different flashing frequencies and colors of lights, operators can clearly understand the equipment's operating status even from a distance or in noisy environments. Simultaneously, these clear signals help new employees quickly familiarize themselves with the equipment's operating procedures and troubleshooting mechanisms, reducing training costs and the probability of operational errors. Furthermore, connecting these audio-visual signals to monitoring or data recording systems allows for detailed recording of the handling process for each blockage event. Records include the time of the blockage, the type of operation performed, and the duration of the blockage. This data can be used for subsequent production analysis, helping companies identify high-incidence periods and causes of blockages, further optimizing production processes and equipment maintenance plans, and improving equipment stability and production continuity. Through the rational setting and effective utilization of audio-visual signals, the practicality and reliability of the entire cigarette machine's fine-puff laser perforation blockage early warning system can be improved, better ensuring the quality and efficiency of cigarette production. The beneficial effects of this invention are: 1. This invention enables real-time and accurate detection of clogged areas and timely removal of defective products: This invention uses a dedicated detection module to monitor this critical area in real time, accurately identifying abnormal conditions such as laser light path obstruction caused by cigarette blockage. When an anomaly is detected, the system immediately outputs a signal to the original rejection mechanism of the cigarette rolling machine through a preset program, triggering the rejection action for defective products. This ensures that unperforated cigarettes caused by light path obstruction are accurately separated, completely preventing defective products from flowing into the next process and blocking batch quality risks from the source.

[0027] 2. This invention enables automatic cleaning and simultaneous early warning of clogged cigarettes: The invention is equipped with a dedicated air-blowing device whose spray direction and pressure parameters are precisely matched to the clogged scenario. When the detection module identifies a clogged cigarette, the system simultaneously controls the air-blowing device to start, quickly clearing the clogged cigarette with directional airflow and restoring the laser beam path to unobstructed flow; at the same time, it triggers an alarm device to issue an audible and visual warning signal, promptly alerting operators to the on-site status, achieving dual protection of "automatic handling + manual monitoring".

[0028] 3. This invention enables the construction of an abnormal delayed shutdown mechanism to prevent batches of defective products: Through a timing system, when the detection module continuously monitors an abnormal state for more than a preset time (which can be flexibly set according to the production cycle), and it is determined that the blockage cannot be resolved automatically, the timing system immediately transmits a shutdown signal to the original control system of the cigarette machine, triggering an emergency shutdown of the equipment. This mechanism effectively avoids ineffective production during periods of abnormality, minimizes the output of defective products, and prevents safety hazards such as overheating and sparks in the laser device caused by prolonged blockage. Attached Figure Description

[0029] Figure 1 This is a system block diagram of a laser perforation blockage early warning system and detection method for thin cigarettes in a cigarette making unit according to the present invention; Figure 2 This is a schematic diagram of the structure of the laser perforation blockage early warning device for thin cigarettes in the cigarette making unit of the present invention; Figure 3 This is a front view of the cigarette making machine's thin-piece laser perforation blockage early warning device of the present invention; Figure 4 This is a right view of the cigarette making machine's thin-piece laser perforation blockage early warning device of the present invention.

[0030] In the picture, 1. Laser drilling wheel; 2. Cigarette wheel; 3. Double long cigarette stick; 4. Stand; 5. Camera; 6. Air outlet; 7. Laser drill. Detailed Implementation

[0031] The related technologies of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1-4As shown, the cigarette making machine's thin-stick laser perforation blockage early warning device and detection method of this embodiment can detect the area between the laser perforation device and the drum in real time. When an abnormal state is detected, a rejection signal is output to the original machine through the program to complete the rejection of defective products and prevent them from flowing into the next process. A blowing device is designed. When it is found that the cigarette stick is blocked between the laser perforation device and the drum, the blowing device is controlled to clean it. At the same time, an alarm device is used to issue an early warning. Then, a program timing system is designed. If the abnormal state does not return to the normal state for a long time, a signal is sent to the original machine to stop the equipment and prevent the production of a large number of defective products.

[0033] Cigarette rolling machine unit's laser perforation blockage early warning device and detection method, such as Figure 1 As shown, it includes a vision inspection module, a vision inspection control module, a PLC control module, a power supply module, a relay module, a human-machine interface, a rejection module, a stop module, an alarm module, a solenoid valve module, an air blowing module, and the original power supply module; as shown. Figure 2 As shown, the structure includes a laser drilling wheel 1, a cigarette-dispensing wheel 2, a double-long cigarette stick 3, a bracket 4, a camera 5, an air outlet 6, and a laser punch 7. In this structure, the visual inspection and control module acquires the original machine's synchronous signal, which is then fed back to the visual inspection and control module to simultaneously acquire images. The visual inspection and control module transmits the synchronously acquired images fed back by the visual inspection module to the human-machine interface. The visual inspection module acquires real-time images of the double-long filter end and the inner tobacco end of the double-long cigarette stick 3 between the laser drilling wheel 1 and the laser punch 7. If foreign objects (including ejected double-long cigarette sticks, tipping paper, etc.) are present in these two areas, an output signal is transmitted to the visual inspection and control module. Simultaneously, the abnormal status of the visual inspection module is output to the PLC control module. Based on the program written in the PLC control module, non-abnormal image information such as tobacco splatter can be shielded to avoid malfunctions. The abnormal status output signal controls the on / off state of the relay module coil. The visual inspection and control module can also be combined with computer image recognition technology. It can analyze the images acquired by the visual inspection module through mature existing computer image recognition algorithms, such as convolutional neural network algorithms, object detection algorithms, and image segmentation algorithms, and obtain laser drilling blockage information after eliminating false detection information. Then, it can control each module to perform corresponding operations.

[0034] The bracket 4 is fixed to the body of the cigarette machine. The camera 5 is installed on the bracket 4. The camera 5 can directly see the double long cigarettes 3 between the cigarette-pulling wheels 2. The air outlet 6 is installed on the bracket 4 and located below the camera 5. The air blown out by the air outlet 6 is tangent to the laser drilling wheel 1 and does not interfere with the normal state of the double long cigarettes 3 on the laser drilling wheel 1. The power supply module is as follows: It supplies power to the vision inspection module, vision inspection control module, PLC control module, relay module, human-machine interface, alarm module, and solenoid valve module; the normally open contacts of the relay module control the on / off state of the rejection module, shutdown module, alarm module, and solenoid valve module; and the solenoid valve module controls the air blowing module. The original power supply module is as follows: The original power supply module supplies power to the rejection module and the shutdown module.

[0035] The PLC control module is specifically designed as follows: The PLC control module is programmed to take the output signal from the vision detection control module. Since the equipment is in a false detection zone during startup, the high-speed signal is shielded for a few seconds after startup, and the vision detection control module outputs the acquired signal. Because the vision detection module frequently captures abnormal images of tobacco splattering, which are transmitted to the vision detection control module and thus affect the PLC control module's information acquisition, if only two or fewer consecutive abnormal state output signals are acquired, the abnormal information is shielded. If two to three consecutive abnormal state output signals are acquired, the PLC control module outputs a signal to control the relay module coil's on / off state.

[0036] The method for detecting blockages in the laser perforation of thin cigarettes in this embodiment includes the following steps: S1, the vision detection module can visually observe the double-length cigarettes between the cigarette-feeding wheels by adjusting the bracket position. It collects images of the double-length filter ends and the inner tobacco ends of the double-length cigarettes between the laser-drilled module and the cigarette-feeding wheels. When foreign objects (including flying double-length cigarettes, tipping paper, etc.) are present in these two areas, the vision detection module outputs a signal to the vision detection control module. The vision detection control module outputs the abnormal status of the vision detection module to the PLC control module. S2, the PLC control module also collects high-speed operation signals of the equipment. Since the vision detection module often collects non-abnormal images of tobacco splattering and transmits them to the vision detection control module, it affects the information collection of the PLC control module. It is necessary to filter out this abnormal information through program design.

[0037] In this embodiment, the visual inspection module is precisely fixed to the cigarette machine body using bracket 4. It targets two key areas: the end of the double-length filter tip of the cigarette and the inner tobacco end of the double-length cigarette. This enables the targeted capture of foreign objects such as flying cigarettes and tipping paper. At the same time, a tangential installation structure is designed for the blowing module and the laser drilling wheel to ensure that the cleaning action does not interfere with the normal cigarettes. This solves the problem of precise alignment between the detection and execution mechanisms in a narrow production space.

[0038] This implementation method constructs a collaborative link between a visual inspection module, a visual inspection control module, a PLC control module, a relay module, and various execution modules (rejection, shutdown, alarm, and air blowing). The visual inspection control module synchronously collects original machine signals and image data, enabling accurate transmission of abnormal signals and rapid issuance of execution commands. This forms a fully automated closed loop from foreign object detection to tiered handling, ensuring timely response to blockage faults and achieving closed-loop linkage of "detection-control-execution".

[0039] This implementation method uses customized programming to filter and identify image signals collected by the vision inspection module, accurately shielding non-blocking interference information such as tobacco splatter, improving the effectiveness of the detection signal from the software level, avoiding misjudgment by the PLC control module, ensuring the reliability of the device operation, and shielding non-abnormal signals.

[0040] This implementation adopts a hierarchical power supply architecture, which separates the power supply of core low-voltage modules such as detection, control, and human-machine interaction from high-voltage execution modules such as rejection and shutdown. These modules are powered independently by dedicated power supply modules and original power supply modules, respectively, avoiding power supply interference between different types of modules, improving the stability and anti-interference capability of the system in high-speed production environments, and achieving dual-path independent power supply protection.

[0041] In summary, this invention provides a comprehensive and efficient solution to the problem of clogging during laser perforation of thin cigarettes in cigarette making machines through the aforementioned innovative designs and technologies. From the structural layout of the early warning device to the step-by-step setting of the detection method, and the coordinated cooperation between various modules, each step is closely linked and ensures the smoothness of the laser perforation process and the quality of cigarette production.

[0042] In practical production applications, this invention has demonstrated significant advantages. It can accurately detect clogged areas in real time, promptly removing defective products and preventing substandard cigarettes from flowing into the next process, effectively improving the overall quality of the cigarettes. Simultaneously, the function of automatically clearing clogged cigarettes and providing simultaneous early warnings reduces manual intervention, increases production efficiency, and lowers the risk of equipment failure and damage. The hierarchical power supply architecture ensures stable operation of the system in high-speed production environments and enhances the system's anti-interference capabilities.

[0043] Furthermore, the acoustic, optical, and electronic signal design of this invention provides great convenience for operators. Different operations correspond to different acoustic, optical, and electronic signals, enabling operators to quickly determine blockages and appropriate actions, and accurately understand the equipment's operating status even in noisy production environments. Moreover, the connection of these signals with monitoring and data recording systems provides rich data support for enterprise production analysis, helping companies to further optimize production processes and equipment maintenance plans.

[0044] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A clogging early warning system for laser-drilled thin cigarettes in a cigarette making machine, characterized in that, include: The visual inspection module is used to collect images of the double-long filter end and the inner tobacco end of the double-long cigarette (3) between the laser drilling wheel (1) and the laser drill (7) in real time; The vision inspection control module is used to collect the original machine's synchronization signal for the vision inspection module to synchronously acquire images, and also to transmit the images fed back by the vision inspection module to the human-computer interaction interface. The PLC control module is used to send abnormal status signals in the feedback image of the vision inspection module to the relay module, and is also used to shield non-abnormal image information in the feedback image of the vision inspection module, including tobacco splatter. The power supply module is used to supply power to modules other than the rejection module and the shutdown module; The relay module is used to receive abnormal status signals from the PLC control module and control the on / off state of the relay coil. Human-machine interface, used for the transmission, dialogue, and exchange of laser drilling blockage information and control commands between humans and machines; The rejection module is used to reject defective cigarettes that are blocked during laser drilling. The shutdown module is used to send a shutdown signal to stop the equipment when the laser drilling becomes clogged. The alarm module is used to issue an audible and visual alarm when the laser drilling becomes clogged. The solenoid valve module is used to control the start and stop of the air blowing module; The air blowing module is used to emit high-speed airflow to clear blockages during laser drilling. The original power supply module is used to supply power to the rejection module and the shutdown module; The visual inspection module is connected in series with the visual inspection control module, PLC control module, and relay module, and then electrically connected to the shutdown module. The human-machine interface is electrically connected to the visual inspection module. The relay module is electrically connected to the rejection module, alarm module, and solenoid valve module, respectively. The solenoid valve module is electrically connected to the air blowing module. The power supply module is electrically connected to the human-machine interface, visual inspection module, visual inspection control module, PLC control module, relay module, alarm module, and solenoid valve module. The original machine power supply module is electrically connected to the rejection module and shutdown module.

2. The cigarette making machine's thin-piece laser perforation blockage early warning system according to claim 1, characterized in that, The visual inspection module includes: a bracket (4) and a camera (5). The bracket (4) is fixed on the original machine frame. The camera (5) is detachably connected to the bracket (4). The shooting direction of the camera (5) is towards the cigarette wheel (2) between the laser drilling wheel (1) and the laser punch (7). The cigarette wheel (2) drives the double long cigarettes (3) to be punched between the laser drilling wheel (1).

3. The cigarette making machine's thin-piece laser perforation blockage early warning system according to claim 2, characterized in that, The air blowing module includes an air blowing port (6), which is detachably connected to a bracket (4). The air blowing direction of the air blowing port (6) is towards the laser light path of the laser drill (7).

4. The cigarette making machine's thin-piece laser perforation blockage early warning system according to claim 3, characterized in that, The air inlet (6) is located on the lower side of the camera (5).

5. The cigarette making machine's thin-piece laser perforation blockage early warning system according to claim 3, characterized in that, The blowing direction of the air inlet (6) is tangent to the outer circumference of the laser drilling wheel (1).

6. The cigarette making machine's thin-piece laser perforation blockage early warning system according to claim 1, characterized in that, The blockage includes: a flying cigarette and cork paper.

7. A method for detecting blockages in thin cigarette cigarettes produced by laser drilling, characterized in that, The laser drilling blockage detection method employs the laser drilling blockage early warning system according to any one of claims 1 to 6, and the laser drilling blockage detection method includes the following steps: Step S1: The visual inspection module collects images of the double-length filter tip and the inner tobacco tip of the double-length cigarette (3) between the laser drilling wheel (1) and the laser drilling machine (7). When there are foreign objects in these two areas, the visual inspection control module sends the abnormal signal output by the visual inspection module to the PLC control module. Step S2: The PLC control module synchronously acquires the high-speed operation signal of the original equipment, and obtains the laser drilling blockage information after filtering out false detection information; Step S3: The PLC control module sends a signal to the relay module, which controls the rejection module, shutdown module, alarm module, solenoid valve module, and air blowing module. Each module performs the rejection operation, shutdown operation, air blowing operation, and alarm operation respectively.

8. The method for detecting blockages in thin-walled cigarette making machines using laser drilling, as described in claim 7, is characterized in that... In step S3, the rejection operation, the shutdown operation, and the air blowing operation correspond to different alarm operation sound, light, and electrical signals.

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