A device for detecting cigarette surfaces in molded box cigarette groups before packaging

Abstract

The present invention provides a device for detecting the surface of cigarettes in a mold box cigarette group before packaging, comprising: a first visual detection device, a second visual detection device, a photoelectric detection switch, an angle sensor and a controller. The first visual detection device is arranged directly above the first station of a protective cover plate of a packaging machine. The photoelectric detection switch is used to detect whether the cigarette push rod pushes the mold box cigarette group to the first station. The second visual detection device is arranged in the square of the second station of the protective cover of the packaging machine. The angle sensor is used to detect the flipping angle of the packaging machine. The controller controls the first visual detection device to perform front detection of the cigarette group when the mold box cigarette group is in the first station, and also controls the second visual detection device to perform back detection of the cigarette group when the flipping angle is 180°. The present invention can improve the recognition rate of defective cigarette products and the quality of cigarette products.

Description

Technical Field

[0001] The present invention relates to the technical field of cigarette detection, and in particular to a cigarette surface detection device for a cigarette mold box group before packaging. Background Art

[0002] In the process of cigarette packaging production, the quality of cigarettes directly affects the quality of the final product. In order to ensure the quality of cigarettes, empty and missing cigarette detection is installed at the key stations of the packaging machine production line to detect whether there are empty cigarettes and missing cigarettes in the mold box. However, in the entire production process from the production of cigarettes by the cigarette making machine to the second round of aluminum paper wrapping of the cigarette mold box group of the packaging machine, mechanical parts such as the conveyor belt, drive mechanism and cigarette pusher will cause certain damage to the appearance quality of the cigarettes, which may cause damage to the appearance of the cigarettes, stains, deformation and other appearance quality problems of the cigarettes. At present, the appearance inspection of cigarettes is mainly aimed at the cigarette making machine. A cigarette appearance imaging visual inspection is installed near the U-turn drum of the cigarette making machine. The visual imaging technology is used to perform visual imaging inspection on the appearance of cigarettes, and cigarettes with appearance defects are eliminated. However, this test only conducts appearance inspection on the quality of cigarettes produced by the cigarette making machine. During the entire process of conveying cigarettes from the exit of the cigarette making machine to the aluminum paper packaging position at the second round entrance of the packaging machine, there is a lack of inspection on the surface appearance of cigarettes, which can easily cause defective cigarettes to enter the packaging. When defective cigarettes complete the second round of aluminum paper packaging, once the quality defects of the cigarettes are found manually, since there is no corresponding inspection to check and locate the defective cigarettes, it is necessary to check the defective cigarette packs of a large number of previously produced formed cigarette packs, resulting in a large amount of manpower and material resources consumption, and increasing product quality risks and production costs. Therefore, it is of great significance to conduct a final effective inspection of the surface appearance quality of the mold box cigarette group before the mold box cigarette group is packaged and formed, accurately control the product quality of the defective products, and reduce product quality risks. Summary of the invention

[0003] The present invention provides a device for detecting the surface of cigarettes in a mold box cigarette group before packaging, which solves the problem of lack of detection of the surface appearance of cigarettes before the mold box cigarette group is packaged and formed in the existing cigarette packaging production, can improve the recognition rate of defective cigarette products, and improve the quality of cigarette products.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A device for detecting the surface of cigarettes in a mold box cigarette group before packaging, comprising: a first visual detection device, a second visual detection device, a photoelectric detection switch, an angle sensor and a controller;

[0006] The first visual inspection device is arranged just above the first station of a protective cover plate of a packaging machine to inspect the surface of the cigarettes on the front of the cigarette group in the mold box;

[0007] The photoelectric detection switch is arranged on the side of the conveyor belt corresponding to the first station to detect whether the cigarette push rod pushes the mold box cigarette group to the first station;

[0008] The second visual inspection device is arranged at the square of the second station of the protective cover of the first round of the packaging machine to inspect the surface of the cigarettes on the back of the cigarette group in the mold box;

[0009] The angle sensor is arranged on a wheel of the packaging machine and is used to detect the flipping angle of the wheel of the packaging machine;

[0010] The controller is respectively connected to the first visual detection device, the second visual detection device, the photoelectric detection switch and the angle sensor signal;

[0011] The controller controls the first visual inspection device to perform front inspection of the cigarette group when the mold box cigarette group is in the first workstation, and also controls the second visual inspection device to perform back inspection of the cigarette group when the flip angle is 180°.

[0012] Preferably, it also includes: a rejection device;

[0013] The rejecting device is connected to the controller signal, and the controller controls the rejecting device to reject the defective cigarettes when there are quality defects on the surfaces of cigarettes in the cigarette group.

[0014] Preferably, the first visual inspection device comprises: a first industrial camera and a first image recognition processor;

[0015] The first image recognition processor is signal-connected to the controller and the first industrial camera respectively;

[0016] When the mold box cigarette group is in the first workstation, the controller sends a first photographing pulse to the first image recognition processor, so that the first image recognition processor controls the first industrial camera to photograph the front surface of the cigarettes in the cigarette group and perform defect recognition on the front image of the cigarette surface.

[0017] Preferably, the second visual inspection device comprises: a second industrial camera and a second image recognition processor;

[0018] The second image recognition processor is respectively connected to the controller and the second industrial camera by signal;

[0019] When the flip angle is 180°, the controller sends a second photographing pulse to the second image recognition processor, so that the second image recognition processor controls the second industrial camera to photograph the surface of the cigarettes on the back of the cigarette group and perform defect recognition on the back image of the cigarette surface.

[0020] Preferably, it also includes: a touch screen;

[0021] The touch screen is connected to the controller signal, and is used to provide a human-computer interaction interface and display defect images and the number of defective cigarettes.

[0022] Preferably, it also includes: an alarm device;

[0023] The alarm device is connected to the controller signal, and the controller controls the alarm device to sound an alarm when there are surface defects of cigarettes in the mold box cigarette group.

[0024] Preferably, the alarm device includes at least any one of the following: an indicator light, a buzzer and an audible and visual alarm.

[0025] Preferably, the controller is a PLC controller.

[0026] Preferably, a protective cover plate of the packaging machine is made of transparent material, and observation windows are provided at corresponding positions of the first station and the second station to facilitate the first visual inspection device or the second visual inspection device to inspect the mold box cigarette group.

[0027] The present invention provides a device for detecting the surface of cigarettes in a mold box cigarette group before packaging, which uses a first visual detection device to perform appearance detection on the front surface of cigarettes in the mold box cigarette group at the first station, and uses a second visual detection device to perform appearance detection on the back surface of cigarettes in the mold box cigarette group when the flip angle of a round of the packaging machine reaches 180°. The problem of lack of detection of the surface appearance of cigarettes before packaging and forming of the mold box cigarette group in the existing cigarette packaging production is solved, and the recognition rate of defective cigarette products can be improved, thereby improving the quality of cigarette products. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below.

[0029] Figure 1 It is a schematic diagram of a device for detecting the surface of cigarettes in a mold box cigarette group before packaging provided by the present invention.

[0030] Figure 2 It is a schematic diagram of the installation of a cigarette surface detection device for a cigarette group in a mold box of a GD packaging machine provided by the present invention. DETAILED DESCRIPTION

[0031] In order to enable persons skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0032] In view of the problem that current cigarette packaging lacks appearance inspection of cigarette surfaces before cigarette packaging is formed, the present invention provides a cigarette surface inspection device for mold box cigarette groups before packaging, which solves the problem that in existing cigarette packaging production, there is a lack of appearance inspection of cigarette surfaces before cigarette packaging is formed in mold box cigarette groups, and can improve the recognition rate of defective cigarette products and improve the quality of cigarette products.

[0033] like Figure 1 and Figure 2 As shown, a device for detecting the surface of cigarettes in a mold box cigarette group before packaging comprises: a first visual detection device 11, a second visual detection device 12, a photoelectric detection switch, an angle sensor and a controller. The first visual detection device 11 is arranged directly above the first station of the protective cover plate of the first wheel of the packaging machine, and detects the surface of cigarettes on the front of the mold box cigarette group. The photoelectric detection switch is arranged on the side of the conveyor belt corresponding to the first station to detect whether the cigarette pusher pushes the mold box cigarette group to the first station. The second visual detection device 12 is arranged in the square of the second station of the protective cover of the first wheel of the packaging machine to detect the surface of cigarettes on the back of the mold box cigarette group. The angle sensor is arranged on the first wheel 13 of the packaging machine, and is used to detect the flip angle of the first wheel of the packaging machine. The controller is connected to the first visual detection device, the second visual detection device, the photoelectric detection switch and the angle sensor signal respectively. The controller controls the first visual detection device to detect the front of the cigarette group when the mold box cigarette group is in the first station, and also controls the second visual detection device to detect the back of the cigarette group when the flip angle is 180°.

[0034] In practical applications, such as Figure 2As shown, after cigarettes are produced by the cigarette making machine 1, the appearance of the cigarettes is visually inspected and inspected through the monitoring hole 2. After the qualified cigarettes pass through the conveying channel 3, the cigarette storage device 4, and the cigarette discharge channel 6 from the cigarette making machine outlet, the cigarettes are pushed into the cigarette group mold box 10 by the cigarette pusher to form a cigarette group. The cigarette group is conveyed forward by the cigarette group mold box conveyor belt 5. At the key conveying station, the cigarette group is inspected by the cigarette group empty head detection device 8 and the missing cigarette detection device 7 to realize the empty head and missing cigarette detection of the end face of the cigarette group. The cigarette group with empty heads / missing cigarettes is rejected by the rejection device 9 at the conveyor belt station. The qualified cigarette group with normal cigarette end faces continues to be conveyed forward, and the cigarette group is pushed to the first station of the first round 13 of the packaging machine by the cigarette push rod. At this time, the first visual inspection device 11 takes a photo of the front of the cigarette group; when the first round 13 of the packaging machine turns 180°, the second visual inspection device 12 takes a photo of the back of the cigarette group. The two photographed images are processed by the algorithm to determine whether there are defects. The qualified cigarette group is transferred from the packaging machine's first round 13 to the packaging machine 14 for subsequent aluminum paper packaging and molding. From the production process point of view, the surface appearance inspection of the mold box cigarette group at the first round is the last inspection before the cigarette group is packaged and molded, and it is the only inspection of the surface appearance quality of the cigarette group. After the subsequent packaging and molding, the surface appearance quality of the cigarette group cannot be inspected. However, this device uses a first visual inspection device to perform an appearance inspection on the front surface of the cigarettes in the mold box cigarette group at the first station, and uses a second visual inspection device to perform an appearance inspection on the back surface of the cigarettes in the mold box cigarette group when the flip angle of the packaging machine's first round reaches 180°. It can solve the problem of lack of surface appearance inspection of cigarettes before the mold box cigarette group is packaged and molded in the existing cigarette packaging production, can improve the recognition rate of defective cigarette products, and improve the quality of cigarette products.

[0035] The device also includes: a rejecting device; the rejecting device is connected to the controller signal, and the controller controls the rejecting device to reject the defective cigarettes when there are quality defects on the surfaces of the cigarettes in the cigarette group.

[0036] Furthermore, the first visual inspection device includes: a first industrial camera and a first image recognition processor. The first image recognition processor is connected to the controller and the first industrial camera by signal. When the mold box cigarette group is in the first station, the controller sends a first photographing pulse to the first image recognition processor, so that the first image recognition processor controls the first industrial camera to take a picture of the front surface of the cigarette group and perform defect recognition on the front image of the cigarette surface.

[0037] Furthermore, the second visual inspection device includes: a second industrial camera and a second image recognition processor. The second image recognition processor is connected to the controller and the second industrial camera by signal respectively. The controller sends a second photographing pulse to the second image recognition processor when the flip angle is 180°, so that the second image recognition processor controls the second industrial camera to take a photo of the cigarette surface on the back of the cigarette group, and perform defect recognition on the back image of the cigarette surface.

[0038] The device also includes: a touch screen; the touch screen is connected to the controller signal, and is used to provide a human-computer interaction interface and display defect images and the number of defective cigarettes.

[0039] The device also includes: an alarm device; the alarm device is connected to the controller signal, and the controller controls the alarm device to alarm when there are cigarette surface defects in the mold box cigarette group.

[0040] Furthermore, the alarm device includes at least any one of the following: an indicator light, a buzzer, and an audible and visual alarm.

[0041] Furthermore, the controller is a PLC controller.

[0042] Furthermore, a protective cover plate of the packaging machine is made of transparent material, and observation windows are provided at corresponding positions of the first station and the second station to facilitate the first visual inspection device or the second visual inspection device to inspect the mold box cigarette group.

[0043] In practical applications, the outer side of the first wheel of the packaging machine can be a transparent organic glass protective cover. The first industrial camera is fixed to the protective cover of the first wheel of the packaging machine through the detection bracket, which is directly above the first station, and a suitable observation window is opened on the protective cover. The second industrial camera is fixed to the protective cover of the first wheel of the packaging machine through the detection bracket, which is directly above the second station, and a suitable observation window is also opened at the corresponding position of the protective cover. When the cigarette push rod pushes the mold box cigarette group to the first station of the first wheel of the packaging machine, the detection signal of the photoelectric detection switch is transmitted to the controller, and the controller sends a photo pulse of the first industrial camera, and the first industrial camera takes a front photo of the mold box cigarette group at the first station. When the first wheel of the packaging machine flips 180°, the cigarette group also flips 180°, and the second industrial camera corresponds to the back of the mold box cigarette group. When the controller receives the angle sensor and detects that the flip angle is 180°, it sends a photo pulse to the second industrial camera, so that the second industrial camera takes a back photo of the mold box group at the second station.

[0044] It can be seen that the present invention provides a device for detecting the surface of cigarettes in a mold box cigarette group before packaging, which uses a first visual detection device to perform appearance detection on the front surface of cigarettes in the mold box cigarette group at the first station, and uses a second visual detection device to perform appearance detection on the back surface of cigarettes in the mold box cigarette group when the flip angle of a round of the packaging machine reaches 180°. This solves the problem of lack of detection of the surface appearance of cigarettes before packaging and molding of mold box cigarette groups in existing cigarette packaging production, can improve the recognition rate of defective cigarette products, and improve the quality of cigarette products.

[0045] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A device for detecting the surface of cigarettes in a mold box before packaging, characterized in that: include: A first visual detection device, a second visual detection device, a photoelectric detection switch, an angle sensor and a controller; The first visual inspection device is arranged just above the first station of a protective cover plate of a packaging machine to inspect the surface of the cigarettes on the front of the cigarette group in the mold box; The photoelectric detection switch is arranged on the side of the conveyor belt corresponding to the first station to detect whether the cigarette push rod pushes the mold box cigarette group to the first station; The second visual inspection device is arranged at the square of the second station of the protective cover of the first round of the packaging machine to inspect the surface of the cigarettes on the back of the cigarette group in the mold box; The angle sensor is arranged on a wheel of the packaging machine and is used to detect the flipping angle of the wheel of the packaging machine; The controller is respectively connected to the first visual detection device, the second visual detection device, the photoelectric detection switch and the angle sensor signal; The controller controls the first visual inspection device to perform front inspection of the cigarette group when the cigarette group in the mold box is at the first station, and also controls the second visual inspection device to perform back inspection of the cigarette group when the flip angle is 180°; After the cigarettes are produced by the cigarette rolling machine, the visual inspection of the appearance of the cigarettes is carried out through the monitoring hole. After the qualified cigarettes pass through the conveying channel, the cigarette storage device, and the cigarette discharge channel from the cigarette making machine outlet, the cigarettes are pushed into the cigarette group mold box by the cigarette pushing row to form a cigarette group. The cigarette group is conveyed forward by the cigarette group mold box conveyor belt. At the key conveying station, the cigarette group is inspected by the cigarette group empty head detection device and the missing cigarette detection device to realize the empty head and missing cigarette detection on the end face of the cigarette group. The cigarette group with empty heads / missing cigarettes is rejected by the rejection device at the conveyor belt station, and the qualified cigarette group with normal cigarette end faces continues to be conveyed forward. The cigarette group is pushed to the first station of a round of the packaging machine by the cigarette pushing rod. At this time, the first visual inspection device takes a picture of the front of the cigarette group. When the packaging machine flips 180° in one round, the second visual inspection device takes a picture of the back of the cigarette group. The two photographed images are processed by the algorithm to determine whether there are defects.

2. The device for detecting the surface of cigarettes in a mold box before packaging according to claim 1, characterized in that: Also includes: Rejection device; The rejecting device is connected to the controller signal, and the controller controls the rejecting device to reject the defective cigarettes when there are quality defects on the surfaces of cigarettes in the cigarette group.

3. The device for detecting the surface of cigarettes in a mold box before packaging according to claim 2, characterized in that: The first visual inspection device includes: a first industrial camera and a first image recognition processor; The first image recognition processor is signal-connected to the controller and the first industrial camera respectively; When the mold box cigarette group is in the first workstation, the controller sends a first photographing pulse to the first image recognition processor, so that the first image recognition processor controls the first industrial camera to photograph the front surface of the cigarettes in the cigarette group and perform defect recognition on the front image of the cigarette surface.

4. The device for detecting the surface of cigarettes in a mold box before packaging according to claim 3, characterized in that: The second visual inspection device includes: a second industrial camera and a second image recognition processor; The second image recognition processor is respectively connected to the controller and the second industrial camera by signal; When the flip angle is 180°, the controller sends a second photographing pulse to the second image recognition processor, so that the second image recognition processor controls the second industrial camera to photograph the surface of the cigarettes on the back of the cigarette group and perform defect recognition on the back image of the cigarette surface.

5. The device for detecting the surface of cigarettes in a mold box before packaging according to claim 4, characterized in that: Also includes: Touch screen; The touch screen is connected to the controller signal, and is used to provide a human-computer interaction interface and display defect images and the number of defective cigarettes.

6. The device for detecting the surface of cigarettes in a mold box before packaging according to claim 5, characterized in that: Also includes: Alarm device; The alarm device is connected to the controller signal, and the controller controls the alarm device to sound an alarm when there are surface defects of cigarettes in the mold box cigarette group.

7. The device for detecting the surface of cigarettes in a mold box before packaging according to claim 6, characterized in that: The alarm device includes at least any one of the following: an indicator light, a buzzer and an audible and visual alarm.

8. The device for detecting the surface of cigarettes in a mold box before packaging according to any one of claims 1 to 7, characterized in that: The controller is a PLC controller.

9. The device for detecting the surface of cigarettes in a mold box before packaging according to claim 8, characterized in that: A protective cover plate of the packaging machine is made of transparent material, and observation windows are provided at corresponding positions of the first station and the second station to facilitate the first visual inspection device or the second visual inspection device to inspect the mold box cigarette group.

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