Cigarette filter rod end image acquisition device

Abstract

The utility model provides a cigarette filter stick end image acquisition device, which comprises a conveying mechanism connected with filter stick forming equipment, the conveying mechanism forms a curved conveying path, a clamping groove connected with the filter stick forming equipment is arranged at the starting point of the conveying path, and a filter stick in the filter stick forming equipment enters the conveying mechanism through the clamping groove to be conveyed; the camera assembly is arranged along the conveying path of the conveying mechanism and comprises a first camera and a second camera which are located on the left side and the right side of a filter stick, light source assemblies are arranged at the first camera and the second camera, and an auxiliary light area formed by the light source assemblies covers the end face of the filter stick on the side portion of the conveying mechanism and is used for emitting light. And the first camera and the second camera respectively acquire image information of two side end faces of the same cigarette. According to the utility model, through adjusting the position of the camera and cooperating with the transmission path of the curved surface, compared with plane transmission, better end face photos can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of quality control of cigarette filter rods in the cigarette production process, and particularly relates to an image acquisition device for the end part of a cigarette filter rod. Background Art

[0002] As an important part of a cigarette, during the production process of a hollow filter rod, due to material differences and improper maintenance of the filter rod forming machine and many other reasons, there will be certain defects in the hollow filter rod, such as: filter rod deformation, foreign objects in the ring, filter rod breakage and other defects. In the traditional defect detection process of hollow filter rods, the quality of hollow filter rods is detected by manual sampling inspection, which has low efficiency and high labor intensity. Moreover, the sampling inspection feedback has hysteresis. By the time the defective hollow filter rods are sampled, the filter rod forming machine has already rolled and joined a large number of defective hollow filter rods, resulting in serious waste. Content of the Utility Model

[0003] The purpose of the utility model is to provide a detection device for a cigarette hollow filter rod, and by associating the detection mechanism with the filter rod forming equipment, the effect of automatically and timely detecting the quality of the filter rod is achieved, thereby reducing the labor intensity of workers, improving the quality of products leaving the factory, and reducing the labor cost and management cost of the factory.

[0004] To achieve the above purpose, the utility model is realized through the following technical solutions.

[0005] An image acquisition device for the end part of a cigarette filter rod, comprising:

[0006] A conveying mechanism connected to the filter rod forming equipment, the conveying mechanism forms a curved conveying path, and a card slot connected to the filter rod forming equipment is provided at the starting point of the conveying path, and the filter rod in the filter rod forming equipment enters the conveying mechanism through the card slot for conveying;

[0007] A camera assembly arranged along the conveying path of the conveying mechanism, the camera assembly includes a first camera and a second camera located on the left and right sides of the filter rod, and a light source assembly is provided at each of the first camera and the second camera, and the auxiliary light area formed by the light source assembly covers the end face of the filter rod on the side of the conveying mechanism, so that the first camera and the second camera respectively acquire image information of the end faces on both sides of the same cigarette.

[0008] Furthermore, it further includes a frame assembly located below the conveying mechanism, and the frame assembly extends locally to form brackets on both sides, and the first camera and the second camera are respectively assembled on the brackets.

[0009] Furthermore, the brackets form an L-shaped structure, and the two brackets supporting the first camera and the second camera are arranged back to back, so that the openings of the L-shapes are arranged in the opposite direction.

[0010] Further, the light source assembly is disposed on the back of the L-shaped structure, and the light source assembly is disposed near the conveying mechanism on the front side of the first camera or the second camera.

[0011] Further, two groups of the light source assemblies respectively for the first camera and the second camera, one is horizontally disposed on the bracket, and the other is vertically disposed on the bracket.

[0012] Further, the light source assembly includes an assembly shell forming a closed cavity, and a plurality of lamp bead assemblies disposed along the trajectory of the closed cavity and disposed at an angle to the trajectory of the closed cavity.

[0013] Further, the assembly shell is a square frame, and a plurality of the lamp bead assemblies form 4 lamp bead belts respectively located inside the square frame and inclined inside the square frame.

[0014] Further, the conveying mechanism includes a plurality of hubs tangent to each other, and the centers of the plurality of hubs are on the same horizontal plane.

[0015] Further, it further includes an encoder located on the hub, and the encoder is connected to control devices for both the first camera and the second camera.

[0016] Further, the cigarette filter rod is a hollow filter rod or a solid filter rod.

[0017] The beneficial effects of the present utility model are as follows:

[0018] In the present utility model, the image information of the end face of the filter rod exposed in the conveying trajectory is directly obtained by the detection mechanism, and then it is judged whether the filter rod meets the requirements, which improves the overall quality control efficiency and reduces the labor input.

[0019] In the present utility model, two high-speed USB cameras are equipped on both sides of the drum to form two detection points, and then the two cross-sections of the hollow filter rod are photographed, and appearance quality defects such as filter rod deformation, foreign objects inside the ring, and filter rod breakage can be detected. At the same time, the system gets rid of the bondage of hardware solidification and passive software use. Its PC image processing software can be continuously upgraded and optimized in algorithms, with good flexibility and adaptability. It can adapt to the complex detection requirements of the manufacturer and achieve stable, reliable and convenient effects.

[0020] In the present utility model, some electric control components can also be added. For example, an encoder is installed on the original wheel drum. The control board lights up the light source at an appropriate time according to the phase signal provided by the encoder, and controls the camera to capture two cross-sections of the hollow filter rod. After the image is captured, the image is transmitted into the industrial control computer. The detection software analyzes and processes the current image, and transmits the processing result to the control board. The control board eliminates the defective filter rods through the original machine online according to the current processing result. When a certain number of defective filter rods are continuously detected, the alarm light will give an alarm prompt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic structural diagram of the cigarette filter rod end image acquisition device provided by the present utility model;

[0022] Figure 2 FIG. is a schematic structural diagram of the frame assembly provided by the present utility model;

[0023] Figure 3 FIG. is a schematic structural diagram of the light source assembly provided by the present utility model;

[0024] In the figure:

[0025] 100, conveying mechanism; 110, filter rod; 120, hub; 130, encoder; 200, camera assembly; 210, first camera; 220, second camera; 230, light source assembly; 231, assembly shell; 232, lamp bead assembly; 300, frame assembly; 310, bracket; 500, industrial control computer; 600, touch screen; 700, detection mechanism; 710, detection frame; 720, detection platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be described in detail below with reference to the embodiments shown in the drawings. However, it should be noted that these embodiments are not intended to limit the present utility model. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0027] Referring to the attached Figures 1-3 As shown in the figure, the cigarette filter rod end image acquisition device in this embodiment includes a conveying mechanism 100 connected to the filter rod forming equipment. The conveying mechanism 100 forms a curved conveying path. A card slot connected to the filter rod forming equipment is provided at the starting point of the conveying path. The filter rod 110 in the filter rod forming equipment enters the conveying mechanism 100 through the card slot for conveying;

[0028] A camera assembly 200 is provided along the conveying path of the conveying mechanism 100. The camera assembly 200 includes a first camera 210 and a second camera 220 located on the left and right sides of the filter rod 110 respectively. Light source assemblies 230 are provided at both the first camera 210 and the second camera 220. The auxiliary light area formed by the light source assemblies 230 covers the end face of the filter rod 110 on the side of the conveying mechanism 100, so that the first camera 210 and the second camera 220 respectively acquire image information of the end faces on both sides of the same cigarette.

[0029] In this embodiment, for a hollow filter rod, it is not only necessary to detect whether there are impurities inside the hollow through gray-scale detection, but also necessary to determine whether the inner and outer circles of the hollow filter rod are standard circles. The detection content required is more complex than the center line detection. At this time, more accurate photo information and picture information of the two end faces respectively are needed.

[0030] In this embodiment, the rules formed by the curved surface structure have height differences, thereby forming a relatively large auxiliary light area. In the acquired pictures, not only can the complete end face information be ensured to be displayed, but it can also be expanded to synchronously collect two at the same time.

[0031] For assembly, a frame assembly 300 is further included under the conveying mechanism 100. The frame assembly 300 extends locally to form brackets 310 on both sides. The first camera 210 and the second camera 220 are respectively assembled on the brackets 310. At this time, the two cameras are respectively arranged on both sides, and the width direction of the conveying track is just clamped between the two brackets.

[0032] Specifically, the bracket 310 forms an L-shaped structure. The two brackets 310 supporting the first camera 210 and the second camera 220 are arranged back to back, so that the openings of the L-shapes are arranged in the opposite direction. The opening directions of the two brackets are opposite, that is, one is forward and the other is backward in the horizontal direction, and they are arranged in the opposite direction, providing a larger assembly space.

[0033] In this embodiment, the light source assembly 230 is specifically located at the back of the L-shaped structure, and the light source assembly 230 is arranged near the front side of the first camera 210 or the second camera 220 close to the conveying mechanism 100. In use, the light source assembly first forms an auxiliary light source surface to enhance the light brightness at the end face, and then the camera located at its rear side directly performs collection.

[0034] When setting, the two groups of the light source assemblies 230 respectively for the first camera 210 and the second camera 220, one is horizontally arranged on the corresponding bracket 310, and the other is vertically arranged on the corresponding bracket 310. Their cross-vertical arrangement forms surfaces with different degrees of emphasis or different light source brightness. Then, when comparing the two end faces later, the pictures of the places with partial light brightness differences can be compared with reference to the pictures of the places with good light brightness.

[0035] This embodiment further includes a detection component 700. A detection framework 710 is provided in the detection component 700, and a detection platform 720 is provided in the detection framework. A bracket is set on the detection platform, and then another bracket is set on the other side of the detection framework to complete the assembly.

[0036] In actual setting, one camera can be located at the top of the detection framework, close to the filter rod forming device, and the other is located outside the upper middle part of the detection framework, far from the filter rod forming device. At this time, some encoders and the like can be assisted to calculate the distance difference between the two cameras in the trajectory, and combined with the transmission speed of the trajectory, calculate the time difference of the same filter rod at the two cameras, so as to facilitate finding the photos of the two end faces of the same filter rod.

[0037] In this embodiment, the light source component 230 includes an assembly shell 231 forming a closed cavity, and a plurality of lamp bead components 232 arranged along the trajectory of the closed cavity and arranged at an angle with the trajectory of the closed cavity. At this time, the lamp bead components are arranged obliquely, improving the light projection effect.

[0038] Taking the assembly shell 231 composed of a square frame as an example, its four sides are all straight lines, but the lamp bead belts in a plurality of the lamp bead components 232 form 4 light illumination components respectively located inside the square frame and inclined inside the square frame at this time. At this time, the inclined lamp belts form a cross-section of a special-shaped structure, which is smaller than the cross-section of the closed cavity. This setting with a certain inclination of the lamp beads inward makes the light more concentrated and the light projection effect better.

[0039] In this embodiment, the conveying mechanism 100 includes a plurality of mutually tangent hubs 120, and the centers of the plurality of hubs 120 are on the same horizontal plane. Furthermore, there is no height difference, and the horizontal is more convenient for continuous transportation.

[0040] In this embodiment, the drum and the detection framework are separated and independent of each other, and the detection framework is fixed on the ground.

[0041] In this embodiment, an encoder 130 is further included on the hub 120, and the encoder 130 is connected to control devices of both the first camera 210 and the second camera 220. With this setting, the encoder 130 is fixed on the drum, and every time the drum rotates a certain angle, the encoder 130 gives a trigger signal, which is similar to a relay and is synchronized control.

[0042] In this embodiment, the cigarette filter rod is a hollow filter rod or a solid filter rod. Furthermore, the range of use is wide.

[0043] This embodiment is used for the detection device of cigarette hollow filter rods. Based on the existing filter rod forming machine, it is equipped with two high-speed USB cameras respectively located on both sides of the drum, which are used to photograph two cross-sections of the hollow filter rod, and can detect appearance quality defects such as filter rod deformation, foreign objects inside the ring, and filter rod breakage. At the same time, this system gets rid of the constraints of hardware solidification and passive software use. Its PC image processing software can be continuously upgraded and optimized in algorithms, with good flexibility and adaptability. It can adapt to the complex detection requirements of manufacturers and achieve stable, reliable, and convenient effects.

[0044] The principle of this utility model for filter rod detection is as follows:

[0045] The abnormal detection device of cigarette hollow filter rods consists of an encoder, two high-speed USB cameras (i.e., the first camera and the second camera), a set of control boards, an industrial computer 500, etc.

[0046] In this embodiment, an encoder is added to the drum of the original machine. The control board provides the phase signal of the filter rod according to the encoder, lights up the light source at the appropriate time, and controls the cameras to photograph two cross-sections of the hollow filter rod. After the image is taken, it is transmitted into the industrial computer (i.e., the control mechanism), and the detection software analyzes and processes the current image, and transmits the processing result to the control board. The control board eliminates the defective filter rods through the original machine online according to the current processing result. When a certain number of defective filter rods are continuously detected, the alarm light will give an alarm prompt.

[0047] The structure of this utility model for detection is introduced as follows:

[0048] Touch screen 600: On the one hand, it is used to display real-time images, detection results, rejection rates, etc., and on the other hand, it is used to adjust various parameters, including camera parameters, control board parameters, detection software parameters, etc.

[0049] Detection box 1 component: It consists of a set of LED strip lights, a set of high-speed cameras, and other supporting mechanical parts, etc., and is used to detect the appearance quality defects of the rear cross-section of the hollow filter rod.

[0050] Encoder: Provides the phase signal, and photographs and eliminates according to the phase signal in a timely manner.

[0051] Detection box 2 component: It consists of a set of LED strip lights, a set of high-speed cameras, and other supporting mechanical parts, etc., and is used to detect the appearance quality defects of the front cross-section of the hollow filter rod.

[0052] Electric control cabinet component: It is mainly composed of a set of industrial computers, a set of IO control boards, signal boards, etc., and is mainly used for receiving and transmitting signals, processing images, etc.

[0053] The characteristics of this embodiment are:

[0054] 1) The mechanical design is perfectly integrated into the filter rod forming machine.

[0055] 2) In response to the high-speed rotation of the drum, a high-speed USB camera (with a shutter speed of up to 1 us) is used to capture images of the cross-section of the hollow filter rod at different stations, and the detection software needs to synchronously process the images at high speed.

[0056] 3) This detection device is used for hollow filter rods and is also applicable to filter rods; this detection device only targets two cross-sections and can only detect defects in two cross-sections.

[0057] The shooting positions of the two cameras are misaligned, and they respectively shoot the filter rods on the two drums. When the filter rods are transported on the drums, they will pass through the two cameras in sequence. The step difference between the two cameras can be calculated manually, and the two cross-sections of the same filter rod can be found through the step difference.

[0058] As can be seen from the figure, 4 short light sources form a "hui" character shape. The light source is located directly in front of the camera to illuminate the cross-section of the filter rod, and the camera shoots in front of the cross-section.

[0059] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation modes of the present utility model, and they are not intended to limit the protection scope of the present utility model. Any equivalent implementation modes or changes made without departing from the technical spirit of the present utility model should be included in the protection scope of the present utility model.

[0060] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0061] In addition, it should be understood that although this specification is described according to the implementation modes, not every implementation mode only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for acquiring an image of a cigarette filter rod end, characterized in that: include, A conveying mechanism connected to the filter rod forming device, the conveying mechanism forms a curved conveying path, a slot connected to the filter rod forming device is provided at the starting point of the conveying path, and the filter rods in the filter rod forming device enter the conveying mechanism through the slot to be conveyed; A camera assembly is arranged along the conveying path of the conveying mechanism, and the camera assembly includes a first camera and a second camera located on the left and right sides of the filter rod. The first camera and the second camera are both provided with a light source assembly. The auxiliary light area formed by the light source assembly covers the end face of the filter rod on the side of the conveying mechanism, so that the first camera and the second camera respectively obtain image information of the end faces on both sides of the same cigarette.

2. The cigarette filter rod end image acquisition device according to claim 1, characterized in that: It also includes a frame assembly located below the transmission mechanism, wherein the frame assembly is partially extended to form brackets on both sides, and the first camera and the second camera are respectively mounted on the brackets.

3. The cigarette filter rod end image acquisition device according to claim 2, characterized in that: The bracket forms an L-shaped structure, and the two brackets supporting the first camera and the second camera are arranged back to back, so that the opening of the L-shape is arranged in reverse.

4. The cigarette filter rod end image acquisition device according to claim 3, characterized in that: The light source assembly is arranged at the back of the L-shaped structure, and the light source assembly is arranged at the front side of the first camera or the second camera close to the transmission mechanism.

5. The cigarette filter rod end image acquisition device according to claim 2, characterized in that: The two groups of light source components used for the first camera and the second camera respectively, one is horizontally arranged on the bracket, and the other is vertically arranged on the bracket.

6. The cigarette filter rod end image acquisition device according to claim 1, characterized in that: The light source assembly comprises an assembly shell forming a closed cavity, and a plurality of lamp bead assemblies arranged along the closed cavity trajectory and forming an angle with the closed cavity trajectory.

7. The cigarette filter rod end image acquisition device according to claim 6, characterized in that: The assembly shell is a square frame, and a plurality of the lamp bead assemblies form four lamp bead belts which are respectively located in the square frame and inclined to the square frame.

8. The cigarette filter rod end image acquisition device according to claim 1, characterized in that: The transmission mechanism comprises a plurality of wheel hubs which are tangent to each other, and the centers of the plurality of wheel hubs are in the same horizontal plane.

9. The cigarette filter rod end image acquisition device according to claim 8, characterized in that: It also includes an encoder located on the wheel hub, and the encoder, the first camera, and the second camera are all connected to a control device.

10. The cigarette filter rod end image acquisition device according to claim 1, characterized in that: The cigarette filter rod is a hollow filter rod or a solid filter rod.

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