Central support moisture retention package appearance detection system and detection method

Abstract

The application discloses a kind of middle support moisture-retention package appearance detection system and detection method, the main design concept of the application is in at, six cameras for small package are configured, and two belts with spacing are used to horizontally convey cigarette package, the bottom of cigarette package is maximized to be exposed, six surface detection of small package is realized;And through multi-angle dome lighting, uniform light supplement to moisture-retention package is realized, which is conducive to improving the detection accuracy of subtle defects;In addition, the provided sub-packaging device and sub-packaging motor can adjust the speed to adapt to different needs and production speed, can effectively ensure that only a single cigarette package is shot each time, and the sub-packaging device can uniformly sub-packaging while ensuring that the cigarette package is not excessively squeezed. Thus, the application realizes the effect of conveying cigarette package by flat package and completing six visual reliable imaging detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of cigarette manufacturing, in particular to a medium-branch moisture-retaining outer appearance detection system and method. BACKGROUND

[0002] In recent years, in order to improve the product process control ability and further promote fine manufacturing, visual detection technology is widely used in the field of cigarette manufacturing. Especially in the detection of small box cigarette package, it is widely used. The small package appearance detection device is generally installed on the outlet channel of the small box packaging machine, and the original machine is used to realize it.

[0003] In detail, the existing product cigarette visual imaging detection, which is commonly known as small package appearance detection in the industry, mainly detects the packaged small box trademark paper product. The specific method is to install an imaging detection system on the small box packaging machine outlet cigarette conveying channel. When the device is running, the cigarette is placed on the conveying belt, and the conveying belt transports the cigarette by friction. The moisture-retaining package appearance detection detects the upper side, front large face, rear large face, left bottom face and right bottom face of the small box cigarette package (the lower side is in contact with the conveying belt and cannot be detected). That is, the existing technology mainly detects the side-standing cigarette, and the detection surface is five surfaces, and there is no full six-surface moisture-retaining package appearance detection scheme. Furthermore, in the current visual detection scheme, the illumination mechanism for improving the clarity of the photograph will cause uneven exposure, and thus the ideal imaging effect cannot be obtained. In addition, before the cigarette enters the detection device, the small box cigarette is usually separated by two vertical conveying belts. Since the packaging material of the moisture-retaining package is soft, this conveying method using a belt clamp may cause the cigarette to deform and affect the product quality.

[0004] The summary is as follows:

[0005] (1) The existing moisture-retaining package appearance detection only detects five surfaces, the conveying belt width is greater than the cigarette width, and the lower side is in contact with the conveying belt. If there is a quality defect on the lower side of the cigarette, the existing moisture-retaining package appearance detection scheme cannot reliably detect it.

[0006] (2) The existing moisture-retaining package appearance detection uses a strip light source to light, and the LED light source is illuminated from the same direction, which often causes part of the collected cigarette image to be overexposed and the other part to be weakly exposed, thereby affecting the detection accuracy.

[0007] (3) Before the cigarette enters the detection device, the vertical conveying belt clamping method is used for separation, which may deform the cigarette and affect the product quality. SUMMARY

[0008] In view of the above, the present application aims to provide a middle support moisture retention package appearance detection system and a detection method to solve the aforementioned technical problems.

[0009] The technical solutions adopted by the present application are as follows:

[0010] In a first aspect, the present application provides a middle support moisture retention package appearance detection system, which comprises:

[0011] The package triggering optical fiber, the photograph triggering optical fiber, the rejection triggering optical fiber, the outlet blockage detection optical fiber, the package device, the package motor, the front light supplement device, the front detection camera, the rear light supplement device, the rear detection camera, the upper light supplement device, the upper detection camera, the lower light supplement device, the lower detection camera, the left upper detection camera, the right upper detection camera, the rejection device, and the conveying belt.

[0012] The two belts are horizontally and parallelly arranged to horizontally support the maximum side of the cigarette package, and have a preset interval.

[0013] The package triggering optical fiber, the photograph triggering optical fiber, the rejection triggering optical fiber, and the outlet blockage detection optical fiber are sequentially arranged according to the conveying direction and are installed at the middle passage of the two belts through the fixed support, and are in an up-down irradiation mode.

[0014] The package motor is connected with the package device through the pulley and the toothed belt to provide power for the package device, and the package device is used to separate the adjacent cigarette packages by a predetermined distance.

[0015] The front light supplement device, the rear light supplement device, the upper light supplement device, and the lower light supplement device correspond to the four sides of the cigarette package respectively and are installed around the conveying belt behind the package device according to the conveying direction.

[0016] The six detection cameras are arranged corresponding to the six sides of the cigarette package, and the front detection camera, the rear detection camera, the upper detection camera, and the lower detection camera are connected with the front light supplement device, the rear light supplement device, the upper light supplement device, and the lower light supplement device respectively.

[0017] The rejection device is installed behind the detection cameras according to the conveying direction.

[0018] The package triggering optical fiber, the photograph triggering optical fiber, the rejection triggering optical fiber, and the outlet blockage detection optical fiber are electrically connected with each light supplement device, each detection camera, the package motor, and the rejection device respectively.

[0019] In at least one possible implementation, each light supplement device has a bowl-shaped semicircular structure, specifically including a circular light supplement cover and a ring-type LED lamp facing the inner wall of the circular light supplement cover.

[0020] And the inner wall of the circular light supplement cover is provided with a white frosted rough surface for forming a diffuse reflection inside the light supplement device.

[0021] In at least one possible implementation, the distance between the two belt center axes of the conveying belt is equal to one half of the length of the long side of the cigarette packet.

[0022] In at least one possible implementation, the dividing motor has a variable speed and / or variable direction function for changing the passing speed of the cigarette packet.

[0023] In at least one possible implementation, the detection system further comprises a trigger board, and the dividing trigger optical fiber, the photographing trigger optical fiber, the rejecting trigger optical fiber, and the outlet blockage detection optical fiber are respectively connected to the trigger board.

[0024] The trigger board has at least three signal transmission paths.

[0025] The first path is connected to each detection camera and each light supplement device.

[0026] The second path is connected to the upper computer through an I / O interface board.

[0027] The third path is connected to a PLC for controlling the operation of the conveying belt, the rejecting device, and the dividing motor.

[0028] In at least one possible implementation, the upper computer is connected to the PLC and each detection camera through electrical signals.

[0029] In at least one possible implementation, the rejecting device comprises a rejecting electromagnetic valve, a rejecting air cylinder, and a rejecting nozzle, and the rejecting electromagnetic valve is connected to the PLC through an electrical signal.

[0030] In at least one possible implementation, a strip-shaped light supplement lamp is arranged at the lower part of each of the upper left detection camera and the upper right detection camera.

[0031] In at least one possible implementation, the detection system further comprises two semi-arc-shaped mounting brackets, and each mounting bracket is used for mounting three detection cameras.

[0032] In a second aspect, the present application provides a method for detecting the appearance of a middle-branch moisture-retention cigarette packet, which comprises the following steps.

[0033] Determining whether the outlet of the conveying channel is blocked by the outlet blockage detection optical fiber.

[0034] After determining that the outlet is not blocked, driving the conveying belt to convey the cigarette packet from the inlet of the conveying channel to the photographing detection area.

[0035] When the cigarette packet is transported to the bale-out trigger optical fiber, the bale-out motor is controlled to operate according to the feedback signal of the bale-out trigger optical fiber, and the bale-out device is brought to separate the adjacent transported cigarette packets;

[0036] When the cigarette packet is transported to the photographing trigger optical fiber, the light supplementing devices are triggered to light up, and the detection cameras are triggered to take pictures at the same time;

[0037] According to the pictures taken by the detection cameras, it is determined whether the appearance of the cigarette packet has defects;

[0038] If there are defects, the rejection device is controlled to act when the defective cigarette packet arrives at the rejection trigger optical fiber, so that the defective cigarette packet is rejected from the transport belt.

[0039] Compared with the prior art, the main design concept of the present application is that six cameras are configured for the appearance of the small packet, and two belts with a spacing are used to horizontally transport the cigarette packet, so that the bottom of the cigarette packet is maximally exposed, and six-face detection of the small packet is realized; and through multi-angle dome lighting light supplementing, uniform light supplementing for the moisture-retention packet is realized, which is beneficial to improving the detection accuracy of the fine defects; in addition, the bale-out device and the bale-out motor can adjust the rotating speed to adapt to different requirements and production speeds, so that it can be effectively ensured that only a single packet of cigarettes is taken each time, and the bale-out device can uniformly bale-out the cigarette packet while ensuring that the cigarette packet is not excessively squeezed. Therefore, the present application realizes the effect of transporting the cigarette packet and completing six-face visual reliable imaging detection.

[0040] Further, the present application realizes the multi-branch of the control signal through the trigger board, and the signal does not pass through the PLC processing, so that the trigger delay can be maximally reduced, and more sufficient time is provided for the defect identification and displacement rejection processing.

[0041] Further, the I / O interface board of the present application can convert the 24V control signal sent by the trigger board into the 5V or 12V signal that can be recognized by the upper computer, so that the effective information interaction of the control system and the upper computer IO signal is realized. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described below in combination with the drawings, in which:

[0043] Figure 1 The hardware schematic diagram of the middle-branch moisture-retention packet appearance detection system provided for the embodiment of the present application is shown in the figure;

[0044] Figure 2 The electrical block diagram of the middle-branch moisture-retention packet appearance detection system provided for the embodiment of the present application is shown in the figure;

[0045] Figure 3A flowchart of a middle support moisture-retaining bag appearance detection method provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below with reference to examples shown in the drawings, in which the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be interpreted as a limitation of the present application.

[0047] An embodiment of a middle support moisture-retaining bag appearance detection system is provided by the present application, and specifically as shown in Figure 1 which includes a sub-pack triggering optical fiber 1, a photographing triggering optical fiber 2, a rejection triggering optical fiber 3, an outlet blockage detection optical fiber 4, a sub-pack device 5, a sub-pack motor 6, a front light supplementing device 7, a front detection camera 8, a rear light supplementing device 9, a rear detection camera 10, an upper light supplementing device 11, an upper detection camera 12, a lower light supplementing device 13, a lower detection camera 14, a left upper detection camera 15, a right upper detection camera 16, a rejection device 18, and a conveying belt 19.

[0048] The conveying belt 19 can be horizontally and parallelly arranged by two 10mm wide rubber belts, which are used to horizontally support the maximum side of the cigarette pack, and the two belts have a preset interval. Preferably, the interval of the two belts is adjustable, for example, the two belts respectively contact the left quarter and the right quarter of the lower side of the cigarette pack, so that the corner and most of the lower side of the cigarette pack can be leaked out while ensuring stable conveying of the cigarette pack, thereby minimizing the shielding of the lower side of the cigarette pack by the belt.

[0049] The sub-pack triggering optical fiber 1, the photographing triggering optical fiber 2, the rejection triggering optical fiber 3, and the outlet blockage detection optical fiber 4 are sequentially arranged according to the conveying direction as shown in the figure, and specifically, the sub-pack triggering optical fiber 1 can be arranged at a preset distance before the sub-pack device 5, the photographing triggering optical fiber 2 can be arranged at a position close to the camera area behind the sub-pack device 5, the rejection triggering optical fiber 3 can be arranged at the conveying channel behind the photographing area (the predetermined rejection position), and the outlet blockage detection optical fiber 4 can be arranged at the end outlet of the conveying belt 19. In actual operation, the above four groups of optical fibers can be installed in the middle channel of the two conveying belts 19 by a fixed support, and an up-down shooting mode is adopted, and more preferably, a convex lens is arranged on the optical fiber probe to focus the infrared light emitted by the optical fiber to a light spot diameter less than 6mm, so that the position deviation of the cigarette pack is less than 2mm when triggered each time.

[0050] Then, the sub-packaging device 5 is installed on a moisture-retention package appearance detection base (not shown in the figure), and when the moisture-retention package reaches the sub-packaging device 5, the continuously conveyed cigarette packages are separated by a certain distance by the sub-packaging device, so as to ensure that only a single cigarette package is photographed each time during subsequent photographing detection, and interference caused by front and rear cigarette packages is avoided.

[0051] The sub-packaging motor 6 is connected with the sub-packaging device through a belt wheel and a toothed belt, provides sub-packaging power for the sub-packaging device 5, and can control the sub-packaging effect through motor speed. Specifically, the sub-packaging device 5 can include a clamping mechanism, and through speed and steering control of the sub-packaging motor 6, the effect of gentle clamping and rapid release can be achieved, which can avoid damage to the cigarette package and ensure the efficiency of continuous detection. In some other embodiments, as shown in the figure, the sub-packaging device 5 can be a roller set located on the side of the conveyed cigarette package. The roller set driven by the sub-packaging motor is in frictional contact with the multiple sides of the cigarette package, so as to achieve the effect of changing the conveying speed of the cigarette package and achieve the purpose of separating adjacent cigarette packages by a certain distance. For example, the roller set rotates at a speed significantly lower than the speed of the conveying belt, so that the cigarette package passing through this place is slowed down.

[0052] In succession, the front light supplementing device 7, the rear light supplementing device 9, the upper light supplementing device 11, and the lower light supplementing device 13 correspond to the front, rear, upper, and lower four sides of the cigarette package, respectively, and are installed at the conveying belt 19 behind the sub-packaging device 5 according to the conveying direction.

[0053] The above light supplementing device has a bowl-shaped semicircular structure, which can specifically include a circular light supplementing cover and a ring-shaped LED lamp facing the circular light supplementing cover. The light emitted by the LED does not directly irradiate the cigarette package, but irradiates the circular light supplementing cover and is reflected back through the light supplementing cover. More preferably, the inner side reflecting surface of the circular light supplementing cover is a white frosted rough surface, the light irradiates the surface to form a diffuse reflection, and uniform light irradiation covers the entire inside of the light supplementing device, so as to uniformly supplement the light of the entire plane of the cigarette package.

[0054] The front detection camera 8, the rear detection camera 10, the upper detection camera 12, the lower detection camera 14, the left upper detection camera 15 and the right upper detection camera 16 are respectively arranged corresponding to six sides of the cigarette packet, and the front detection camera 8, the rear detection camera 10, the upper detection camera 12 and the lower detection camera 14 are respectively connected with the front light supplement device 7, the rear light supplement device 9, the upper light supplement device 11 and the lower light supplement device 13, for example, a camera passing hole is arranged on the top of a bowl-shaped semicircular light supplement cover, which is not limited in the application. It can be explained that, since the left upper detection camera 15 and the right upper detection camera 16 are located on the detection channel and it is inconvenient to install the aforementioned light supplement device in space, in some other preferred embodiments of the application, a strip-shaped light supplement lamp can be additionally arranged below the left upper detection camera and the right upper detection camera to supplement light for the left front and right front sides of the cigarette packet.

[0055] It can be explained that the aforementioned camera mounting mode can be achieved by a semicircular mounting bracket 17, for example, the mounting bracket 17 can be fixed on the cigarette packet appearance detection base by a screw rod (not shown in the figure), and as shown schematically, three cameras can be mounted on each mounting bracket 17 (another mounting bracket 17 is not shown).

[0056] The rejection device 18 is arranged behind the camera in the conveying direction, and specifically can be composed of a rejection electromagnetic valve, a rejection air cylinder and a rejection nozzle. When the cigarette packet is determined to be defective and reaches the rejection position, the rejection device 18 is triggered to reject the defective cigarette packet on the channel.

[0057] The packetizing trigger optical fiber 1, the photographing trigger optical fiber 2, the rejection trigger optical fiber 3 and the outlet blockage detection optical fiber 4 are respectively electrically connected with each light supplement device, each detection camera, a packetizing motor and the rejection device.

[0058] Here, the packetizing trigger optical fiber 1, the photographing trigger optical fiber 2, the rejection trigger optical fiber 3 and the outlet blockage detection optical fiber 4 are respectively electrically connected with each light supplement device, each detection camera, a packetizing motor and the rejection device. Figure 2 The electrical connection block diagram of the middle branch moisture-retention packet appearance detection system is shown (only an embodiment is shown, which is not limited), in which the signals detected by the packetizing trigger optical fiber 1, the photographing trigger optical fiber 2, the rejection trigger optical fiber 3 and the outlet blockage detection optical fiber 4 are transmitted to a trigger board (which can be understood as a signal conversion and distribution circuit module), and the signals are divided into three paths by the trigger board.

[0059] The first path is directly transmitted to all cameras and light supplement devices, in which the cameras are triggered to take pictures while the light supplement devices are powered to supplement light, so as to reduce the trigger delay of taking pictures and supplementing light and ensure that the light supplement and picture taking are synchronized. In which, the signal for triggering the picture taking can be converted to 12V by the trigger board, and the voltage for supplementing light is 24V.

[0060] Second, the trigger board transmits the signal to the I / O interface board, which processes the signal into 5V or 12V signal that can be received by the host computer and transmitted to the host computer, and the host computer completes the trigger counting, fault detection and other processes.

[0061] Third, the trigger board directly transmits the signal to the PLC (such as Beckhoff) for control of the conveying belt, the rejection device and the packaging motor.

[0062] In addition, in the above Figure 2 Based on the schematic electrical framework, the host computer can be connected to the PLC and each detection camera, and in actual operation, the detection camera and the host computer can be connected through Ethernet, and the PLC and the host computer can be connected through TwinCAT3 network cable.

[0063] Based on the electrical framework, the detection camera and the host computer can realize functions such as parameter download and photo upload. For example, the detection camera takes a picture of a cigarette packet and transmits the cigarette packet image to the host computer, the host computer detects defects through a preset appearance image detection algorithm, and when a defect is detected in the current cigarette packet image, an NG signal is transmitted to the PLC through the network cable; after receiving the cigarette packet defect signal, the PLC can control the rejection solenoid valve to be powered on, thereby controlling the rejection air cylinder to act and rejecting the corresponding cigarette packet.

[0064] Finally, based on the above system embodiment, the present application combines Figure 3 to provide a method flow of a middle support moisture retention package appearance detection method:

[0065] After the equipment is running, the outlet blockage detection optical fiber 4 judges whether the outlet is blocked, and when the outlet is blocked, the conveying belt and the packaging motor are not started.

[0066] When the outlet is not blocked, the conveying belt is driven to run, and the cigarette packet is conveyed from Figure 1 the left side to the right side as shown, and when the cigarette packet first reaches the packaging trigger optical fiber, the packaging trigger photoelectric probe transmits the signal of the presence of the cigarette packet to the PLC.

[0067] The PLC outputs a signal to control the packaging motor to start, and when the cigarette packet reaches the packaging device, the cigarette packet experiences a process of deceleration and then acceleration because the speed of the packaging device is less than that of the conveying belt, so that the cigarette packet passing through the packaging device is separated from the adjacent conveyed cigarette packet by a distance, facilitating subsequent each time of photographing only one cigarette packet.

[0068] After passing through the packaging device, when the cigarette packet reaches the position of the photographing trigger photoelectric sensor, the sensor transmits the signal of the presence of the cigarette packet to the trigger board, and the trigger board outputs a control signal to control the upper, lower, front, rear, left front and right front fill light to illuminate the cigarette packet; at the same time, the trigger board outputs a signal to control the six detection cameras to take pictures.

[0069] After the photographing is completed, the detection camera can transmit the picture to the upper computer through Ethernet, the upper computer determines whether the cigarette packet is defective through the established cigarette packet appearance detection algorithm, when the cigarette packet is normal, no processing is performed, and when the cigarette packet image represents a defect, the upper computer outputs a signal to the PLC, the PLC receives the defect signal and judges whether the cigarette packet reaches the rejection position through an optical fiber, when the rejection detection photoelectric sensor detects that the defective cigarette packet has reached, the cigarette packet reaching signal is transmitted to the PLC, the PLC outputs a signal to control the electromagnetic valve of the rejection device to be connected to high pressure air, and the cigarette packet is rejected.

[0070] To sum up, the main design concept of the present application is that six cameras for small packet appearance are configured, and two belts with a spacing are used to horizontally convey the cigarette packets, so that the bottom of the cigarette packet is maximally exposed, and six face detection of the small packet is realized; and through multi-angle dome lighting, uniform light supplement for the moisture retention packet is realized, which is beneficial to improve the detection accuracy of the fine defects; in addition, the provided packet dividing device and packet dividing motor can adjust the rotating speed to adapt to different requirements and production speeds, so that it can effectively ensure that only a single cigarette packet is photographed each time, and the packet dividing device can uniformly divide the cigarette packet while ensuring that the cigarette packet is not excessively squeezed. Therefore, the present application realizes the effect of conveying the cigarette packet by the flat packet and completing the reliable six-face visual imaging detection.

[0071] In the embodiments of the present application, if the expression of the position is mentioned, it is based on the relative concept of the embodiments, and in addition, "at least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character " / " generally represents that the front and rear associated objects are in an "or" relationship. "At least one of the following" and the like means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b and c can mean: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c can be single or multiple.

[0072] The above embodiments shown in the drawings detail the structure, features and effect of the present application, but the above is only a preferred embodiment of the present application, and it should be noted that the technical features involved in the above embodiments and preferred modes can be reasonably combined and matched into various equivalent schemes by those skilled in the art without departing from, changing the design idea and technical effect of the present application. Therefore, the present application is not limited by the drawings shown in the drawings, and any change or modification made according to the idea of the present application, or any equivalent embodiment within the scope of the present application, should be within the protection scope of the present application.

Claims

1. A system for inspecting the appearance of a medium-sized lubricant bag, characterized in that: include: Subcontracting trigger optical fiber, photo trigger optical fiber, rejection trigger optical fiber, outlet blockage detection optical fiber, subcontracting device, subcontracting motor, front fill light device, front detection camera, rear fill light device, rear detection camera, upper fill light device, upper detection camera, lower fill light device, lower detection camera, upper left detection camera, upper right detection camera, rejection device and conveyor belt; The conveyor belt comprises two horizontally and parallel belts for horizontally supporting the largest side of the cigarette pack, and the two belts have a preset spacing; and the spacing between the central axes of the two belts of the conveyor belt is equal to half the length of the long side of the cigarette pack; The subpackaging trigger optical fiber, the photographing trigger optical fiber, the rejection trigger optical fiber, and the outlet blockage detection optical fiber are arranged in sequence according to the conveying direction and are installed in the middle channel of the two belts through a fixed bracket in an up-down beaming mode; The subpackaging motor is connected to the subpackaging device via a pulley and a toothed belt to provide subpackaging power for the subpackaging device, and the subpackaging device is used to separate adjacent cigarette packs being transported by a predetermined distance; The front fill light device, the rear fill light device, the upper fill light device, and the lower fill light device correspond to the four sides of the cigarette pack, respectively, and are installed around the conveyor belt behind the subpackaging device in the conveying direction; each fill light device has a bowl-shaped semicircular structure, specifically including: a circular fill light cover and a circular LED light facing the inner wall of the circular fill light cover; and the inner wall surface of the circular fill light cover is set to a white frosted rough surface, which is used to form diffuse reflection inside the entire fill light device; The six detection cameras are respectively arranged corresponding to the six sides of the cigarette pack, and the front detection camera, the rear detection camera, the upper detection camera, and the lower detection camera are respectively connected to the front fill light device, the rear fill light device, the upper fill light device, and the lower fill light device; The rejection device is installed behind the detection camera according to the conveying direction; The subpackaging trigger optical fiber, the photographing trigger optical fiber, the rejection trigger optical fiber and the outlet blockage detection optical fiber are respectively associated with the electrical signals of each fill light device, each detection camera, the subpackaging motor and the rejection device.

2. The appearance inspection system for Zhongzhi Baoluan according to claim 1 is characterized in that: The cigarette packing motor has a variable speed and / or direction function, which is used to change the passing speed of the cigarette packs.

3. The appearance inspection system for Zhongzhi Baoluan according to claim 1 is characterized in that: The detection system further includes a trigger board, and the subpackaging trigger optical fiber, the photographing trigger optical fiber, the rejection trigger optical fiber, and the outlet blockage detection optical fiber are respectively connected to the trigger board by signal; The trigger board has at least three signal transmission paths: The first path is connected to each detection camera and each fill light device; The second channel is connected to the host computer signal through the I / O interface board; The third route is connected to the PLC and is used to control the actions of the conveyor belt, the rejecting device, and the subcontracting motor.

4. The appearance inspection system for Zhongzhi Baoluan according to claim 3 is characterized in that: The host computer is respectively connected to the PLC and each detection camera by electrical signals.

5. The appearance inspection system for Zhongzhi Baoluan according to claim 3 is characterized in that: The rejecting device includes a rejecting solenoid valve, a rejecting cylinder and a rejecting nozzle, and the rejecting solenoid valve is connected to the PLC electrical signal.

6. The appearance inspection system for Zhongzhi Baoluan according to any one of claims 1 to 5, characterized in that: Strip-shaped fill lights are respectively provided at the lower parts of the upper left detection camera and the upper right detection camera.

7. The appearance inspection system for Zhongzhi Baoluan according to any one of claims 1 to 5, characterized in that: The detection system further comprises two semi-arc-shaped mounting brackets, each of which is used to mount three detection cameras.

8. A method for inspecting the appearance of a Zhongzhi Baorun bag, applied to the Zhongzhi Baorun bag appearance inspection system according to any one of claims 1 to 7, characterized in that: include: The outlet blockage detection optical fiber determines whether the outlet of the conveying channel is blocked; After confirming that the outlet is not blocked, the conveyor belt is driven to transport the cigarette pack from the entrance of the conveyor channel to the photo inspection area; When the cigarette pack is delivered to the subpackaging trigger optical fiber, the subpackaging motor is controlled to operate according to the feedback signal of the subpackaging trigger optical fiber, and the cigarette packs are brought to the subpackaging device to separate the adjacent cigarette packs; When the cigarette pack is delivered to the photo triggering optical fiber, each fill light device is triggered to light up and each detection camera is triggered to take a photo; Determine whether there are defects on the appearance of the cigarette pack based on the images taken by each inspection camera; If there is a defect, when the rejection trigger optical fiber feedback defective cigarette package arrives, the rejection device is controlled to operate and the defective cigarette package is rejected from the conveyor belt.

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