An offline cigarette circumference surface laser drilling detection device

Abstract

The present invention provides an offline cigarette circumference surface laser drilling detection device, which consists of a mechanical part, an electric control part and a vision part. Mechanical part: A driving wheel, a main transmission belt, a driven wheel, a second transmission belt, a gauge wheel, an adjustment disc, a device box, a three-axis moving mechanism, and a bracket for providing installation support for the entire system are arranged according to the transmission process. The purpose of the present invention is to detect the laser drilling on the circumference surface of offline cigarettes, replace manual detection, avoid inconsistent standards caused by manual detection, and avoid errors caused by manual fatigue. It can also detect and analyze data output for indicators such as hole pitch, number of holes, and penetration degree, and through data analysis, find the influence relationship of changes in these indicators on cigarette tar, draw resistance, and combustion value, and promptly find the reasons and solve them to ensure product quality. The device has stable and reliable performance, is maintenance-free, and can meet the use of laser drilling detection on the circumference surface of cigarettes of various specifications.

Description

Technical Field

[0001] The present invention belongs to the technical field of tobacco machinery equipment, and particularly relates to an off-line cigarette circumferential surface laser drilling detection device. Background Art

[0002] With the development of new technologies, especially the development of vision technology, the application of product quality inspection has become more and more extensive. It is an indisputable fact that vision inspection replaces manual inspection to bring about the stability and improvement of product quality. Currently, there are two main methods to reduce tar content: one is the physical method, and the other is the chemical method. The former mainly includes using low-density tipping paper, laser drilling, adding activated carbon or clay to the filter tip, etc. The chemical method is adopted by some cigarette flavor manufacturers, that is, some combustion aids such as potassium sorbate, potassium acetate, potassium citrate, etc. are incorporated into the flavor, and then sprayed onto the cut tobacco to improve the combustion effect of the cigarette and achieve the purpose of reducing the tar content of the cigarette. Currently, many cigarettes have adopted water tipping paper with laser drilling and cigarettes formed by spiral paper rolling. Then, a laser drilling detection device is needed to feedback the drilling quality. The significance of the off-line cigarette circumferential surface laser drilling detection device lies in feeding back the indexes of cigarette laser drilling: aperture, hole pitch, number of holes, penetration degree, etc. By analyzing the influence relationship of the changes of these indexes on the tar, draw resistance, and combustion value of the cigarette, the cause can be found in time and solved. The existing off-line cigarette circumferential surface laser drilling detection technologies are roughly divided into the following categories: 1. Magnifying glass method detection. The advantages are: using the magnifying glass method, no energy consumption is required. The disadvantages are: low efficiency, easy fatigue of workers, and unable to quantitatively describe the laser drilling indexes. 2. High-definition magnification method detection. The advantages are: it can detect the aperture of laser drilling, the device is small and compact, the layout is simple, and maintenance-free. The disadvantages are: it can only detect the aperture of laser drilling, and the human eye is prone to fatigue. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies existing in the prior art and provide an off-line cigarette circumferential surface laser drilling detection device that replaces manual labor, has high efficiency and accurate detection.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0005] The present invention includes an industrial control computer, an industrial camera, an LED lighting source, a motor, and a central light source. The motor is connected to a driving wheel, the driving wheel is connected to an encoder coupling, and the encoder coupling is connected to an encoder;

[0006] The described driving wheel drives the driven wheel to rotate synchronously through the main transmission belt. The driven wheel drives the central shaft to rotate. A central gear I and a central gear II are arranged on the central shaft. The central shaft drives the central gear I and the central gear II to perform synchronous rotation actions. The central gear I transmits power to the group A sizing wheels through the sizing wheel transmission belt, thereby driving the group A sizing wheels to move and driving the cigarettes in their central holes to perform synchronous rotation movements. The central gear II transmits power to the group B sizing wheels through the sizing wheel transmission belt, thereby driving the group B sizing wheels to move and driving the cigarettes in their central holes to perform synchronous rotation movements. The group A and group B sizing wheels on the same specification are coaxial, synchronous, and rotate in the same direction;

[0007] The group A sizing wheels include a thick sizing wheel I, a medium sizing wheel I, and a thin sizing wheel I. The group B sizing wheels include a thick sizing wheel II, a medium sizing wheel II, and a thin sizing wheel II. The group A sizing wheels and the group B sizing wheels are evenly arranged on the circumference of the adjustment disc through the second bearings;

[0008] The described adjustment disc is respectively installed at two opposite positions of the central shaft through the first bearings. The elastic positioning pins are installed in the corresponding holes of the fixed plate on the bracket and are locked and matched with the adjustment disc. Cigarette receiving holes are respectively arranged at the centers of the group A sizing wheels and the group B sizing wheels;

[0009] The industrial camera is arranged above the adjustment disc. The central light source is arranged directly opposite the adjustment disc. The LED illumination light source is arranged parallel to the axial direction of the adjustment disc and is arranged at an angle with the central light source;

[0010] The industrial control computer is electrically connected to the motor, the industrial camera, the LED illumination light source, and the central light source.

[0011] Compared with the prior art, the present invention has the following advantages and effects:

[0012] 1. The present invention aims at off-line laser drilling measurement of the circumferential surface of cigarettes. In the past, professional quality inspectors used cameras with scales to sample and measure cigarettes, and the values were read manually, and it was limited to the aperture index. The present invention replaces manual measurement, avoids the non-uniformity of standards caused by manual measurement, and the errors caused by manual fatigue. It can also measure and analyze data on indicators such as hole pitch, number of holes, penetration degree, etc., and analyze the influence relationship of the changes of these indicators on the tar, draw resistance, and combustion value of cigarettes, and find the reasons and solve them in time to ensure product quality. The device has stable and reliable performance, is maintenance-free, and can meet the use of laser drilling measurement of the circumferential surface of cigarettes of various specifications. The rotational power of the group A and group B sizing wheels is provided by the sizing wheel transmission belt 5. They are coaxial, synchronous, and rotate in the same direction on the same specification, forming a two-point-one-line support for the cigarettes, aiming to eliminate the radial runout error during cigarette rotation. Description of the Drawings

[0013] Figure 1It is the overall structure assembly drawing of the present invention;

[0014] Figure 2 It is the three-dimensional structure schematic diagram of the present invention with the device box removed;

[0015] Figure 3 is Figure 1 partial sectional view schematic diagram of;

[0016] In the figure, 1 - device box, 2 - industrial control computer, 3 - lens, 4 - LED lighting source, 5 - second specification wheel drive belt, 6 - adjustment disc, 7 - bracket, 8A - fine specification wheel I, 8B - fine specification wheel II, 9A - center wheel I, 9B - center wheel II, 10A - thick specification wheel I, 10B - thick specification wheel II, 11A - medium specification wheel I, 11B - medium specification wheel II, 12 - center light source, 13 - three-axis moving mechanism, 14 - industrial camera, 15 - motor, 16 - driving wheel, 17 - encoder coupling, 18 - encoder, 19 - start-stop button, 20 - main drive belt, 21 - driven wheel, 22 - flat key, 23 - first bearing, 24 - elastic positioning pin, 25 - second bearing, 26 - fixing plate. Detailed implementation mode

[0017] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way. Any transformation or replacement based on the teachings of the present invention falls within the protection scope of the present invention.

[0018] As shown in the accompanying drawings, the present invention includes an industrial control computer 2, an industrial camera 14, an LED lighting source 4, a motor 15 and a center light source 12. The motor 15 is connected to the driving wheel 16, the driving wheel 16 is connected to the encoder coupling 17, and the encoder coupling 17 is connected to the encoder 18;

[0019] The driving wheel 16 drives the driven wheel 21 to rotate synchronously through the main drive belt 20. The driven wheel 21 drives the central shaft to rotate. Center wheel I 9A and center wheel II 9B are arranged on the central shaft. The central shaft drives center wheel I 9A and center wheel II 9B to perform synchronous rotation movements. Center wheel I 9A transmits power to group A specification wheels through the specification wheel drive belt 5, thereby driving the movement of group A specification wheels and driving the cigarettes in their central holes to perform synchronous rotation movements. Center wheel II 9B transmits power to group B specification wheels through the specification wheel drive belt 5, thereby driving the movement of group B specification wheels and driving the cigarettes in their central holes to perform synchronous rotation movements. The A and B groups of specification wheels rotate coaxially, synchronously and in the same direction on the same specification;

[0020] The A-group specification wheels include a coarse specification wheel I 10A, a medium specification wheel I 11A, and a fine specification wheel I 8A. The B-group specification wheels include a coarse specification wheel II 10B, a medium specification wheel II 11B, and a fine specification wheel II 8B. The A-group specification wheels and the B-group specification wheels are evenly arranged on the circumference of the adjustment disc 6 through the second bearing 25;

[0021] The adjustment disc 6 is respectively installed at two opposite positions of the central shaft through the first bearing 23. The elastic positioning pin 24 is installed in the corresponding hole of the fixing plate 26 on the bracket 7 and is in locking fit with the adjustment disc 6. Cigarette rod accommodating holes are respectively arranged at the centers of the A-group specification wheels and the B-group specification wheels;

[0022] The industrial camera 14 is arranged above the adjustment disc 6. The central light source 12 is arranged facing the adjustment disc 6. The LED illumination light source 4 is arranged parallel to the axial direction of the adjustment disc 6 and is arranged at an angle with the central light source 12;

[0023] The industrial control computer 2 is electrically connected to the motor 15, the industrial camera 14, the LED illumination light source 4, and the central light source 12.

[0024] The industrial camera 14 is arranged on the three-axis moving mechanism 13. A lens 3 is arranged on the bayonet of the industrial camera 14. The lens 3 is arranged facing the adjustment disc 6. The three-axis moving mechanism 13 can move along the X, Y, and Z axes.

[0025] The three-axis moving mechanism 13 is arranged in the device box 1.

[0026] The central wheel I 9A and the central wheel II 9B are arranged on the central shaft through a flat key 22.

[0027] The passive wheel 21 is arranged on the central shaft through a flat key 22.

[0028] The central wheel I 9A is a circular ring-shaped protrusion fixed on the central shaft, and there is a groove structure on the protrusion for placing the specification wheel drive belt 5.

[0029] The central wheel II 9B is a circular ring-shaped protrusion fixed on the central shaft, and there is a groove structure on the protrusion for placing the specification wheel drive belt 5.

[0030] The cigarette rod accommodating hole is in interference fit with the cigarette rod to be measured.

[0031] A start-stop button is arranged on the panel of the device box 1.

[0032] The thick specification wheel I 10A, medium specification wheel I 11A, and fine specification wheel I 8A of the A group of specification wheels are arranged in an equilateral triangle; the thick specification wheel II 10B, medium specification wheel II 11B, and fine specification wheel II 8B of the B group of specification wheels are arranged in an equilateral triangle.

[0033] The industrial control computer 2 is arranged on the panel of the device box 1.

[0034] The passive wheel 21, central wheel I 9A, and central wheel II 9B and the central axis can be of a fixed structure or fixed by a flat key 22. The ultimate goal is to achieve the rotation of the passive wheel 21 driving the rotation of the central wheel I 9A and central wheel II 9B, and the three should achieve synchronous rotation.

[0035] The A group of specification wheels and the B group of specification wheels are arranged in corresponding holes of the adjustment disc 6 through the second bearing 25.

[0036] The surface of the adjustment disc 6 is set to a non-planar structure for easy manual operation. As Figure 3 shown, the cigarette rod should pass through the hole of the fixing plate 26 and reach the corresponding hole of the B group of specification wheels. The hole of the B group of specification wheels is a stepped hole with a large hole for accommodating the cigarette rod and a depth of 3 - 6 MM. The longitudinal direction of the depth of the large hole forms a positioning surface, that is, the positioning surface shown in the figure. The small hole is a through hole, and the central light source passes through the small hole to reach the position of the cigarette rod.

[0037] Working principle and process of the present invention

[0038] When in use, it is placed independently. The mechanical part is set with a driving wheel, main transmission belt, passive wheel, second transmission belt, thick specification wheel, medium specification wheel, fine specification wheel, adjustment disc, device box, three-axis moving mechanism, and a bracket that provides installation support for the entire system according to the transmission process.

[0039] The electric control part is set with a power supply, installed in the device box. The start-stop button is installed on the panel of the device box, and the position encoder is connected to the driving wheel through a coupling.

[0040] The vision part includes an LED lighting source, a central light source on the bracket, a camera and a lens installed on the three-axis moving mechanism, and an industrial control computer installed on the door panel of the electrical control box.

[0041] The said specification wheels include thick, medium and thin specification wheels, which are circumferentially equally divided and installed on the adjustment disc to quickly adjust the cigarette detection specifications and adapt to the detection of cigarettes with different specifications. A cigarette receiving hole is provided at the center of the specification wheel, and the cigarette receiving hole is 0.02 - 0.1 mm smaller than the diameter of the corresponding cigarette, so that an interference fit is formed between the cigarette receiving hole and the cigarette diameter to provide a reliable rotational force for the cigarette. The rotational power of the specification wheels is all provided by the second transmission belt and they rotate at the same angular velocity.

[0042] During use, the industrial control computer 2 is installed on the panel of the device box 1, the start-stop button 19 is installed on the device box 1, the lens 3 is installed in the bayonet of the camera 14, the camera 14 is installed on the X, Y, Z three-axis moving mechanism 13 and placed in the device box 1, the motor 15 is installed on the bracket 7, the driving wheel 16 is installed at the shaft end, the encoder coupling 17 is connected to the driving wheel, the coupling is connected to the encoder 18, the driving wheel transmits power to the driven wheel 21 through the transmission belt 20, and the driven wheel 21 drives the central gear I9A to rotate through the flat key 22. The middle section of the central gear I9A transmits power to the group A specification wheels through the specification wheel transmission belt 5, so as to drive the group A specification wheels to move and drive the cigarettes in their central holes to make synchronous rotational movements. The other section of the central gear I9A drives the central gear II9B to rotate through the flat key 22, and the central gear II9B transmits power to the group B specification wheels through the specification wheel transmission belt 5. The group A and group B specification wheels are installed in the corresponding holes of the adjustment disc 6 through the second bearings 25, the adjustment disc 6 is installed on the central gear I9A through the first bearing 23, and the central gear I9A is installed on the bracket 7 through the first bearing 23. The elastic positioning pin 24 is installed in the corresponding holes of the fixed plate 26 on the bracket 7. The laser-drilled cigarettes are illuminated by the central light source 12 and the LED illumination light source 4, and the above devices are installed in different parts of the bracket 7 according to their executive functions.

[0043] According to the thickness specification of the cigarette to be detected, adjust the adjustment disc so that the specification wheel matching the specification of the cigarette to be measured is in the detection position. When adjusting, manually rotate the adjustment disc, and the corresponding position can obviously sense the touch of the elastic positioning pin inserted into the positioning hole of the adjustment disc.

[0044] Turn on the power switch, power on the system, start the industrial computer and automatically enter the software interface. Select the cigarette specification in the interface, put the cigarette into the center hole of the specification wheel, and align the measuring end face of the cigarette with the positioning surface of the center hole of the B-group specification wheel. Press the start button, the motor 15 drives the driving wheel 16 to rotate, the driving wheel 16 drives the main transmission belt 20 to move, the main transmission belt 20 drives the driven wheel 21 to rotate synchronously, the driven wheel 21 drives the central shaft to rotate through the flat key 22, the central shaft rotation drives the central gear I 9A and the central gear II 9B to rotate, the central gear I 9A transmits the power to the A-group specification wheel through the specification wheel transmission belt 5, so as to drive the A-group specification wheel to move and drive the cigarette in its central hole to make synchronous rotation. The central gear II 9B transmits the power to the B-group specification wheel through the specification wheel transmission belt 5, so as to drive the B-group specification wheel to move and drive the cigarette in its central hole to make synchronous rotation. The A and B groups of specification wheels rotate coaxially, synchronously and in the same direction on the same specification, forming a two-point-one-line support for the cigarette, aiming to eliminate the radial runout error when the cigarette rotates. At the same time, the encoder starts to count the angle phase and sends a signal to the camera to capture an image of the cigarette. When the encoder counts a full circle of 360 degrees for the cigarette, it sends a signal to the camera, and the camera stops capturing images. The stop light is on, press the stop button and take out the cigarette. Complete the laser drilling measurement of one cigarette.

[0045] The specific embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the protection scope of the invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. An offline cigarette circumference surface laser drilling detection device, characterized in that: It includes an industrial control computer (2), an industrial camera (14), an LED lighting source (4), a motor (15) and a central light source (12). The motor (15) is connected to a driving wheel (16), the driving wheel (16) is connected to an encoder coupling (17), and the encoder coupling (17) is connected to an encoder (18). The driving wheel (16) drives a driven wheel (21) to rotate synchronously through a main transmission belt (20). The driven wheel (21) drives a central shaft to rotate. A central wheel I (9A) and a central wheel II (9B) are arranged on the central shaft. The central shaft drives the central wheel I (9A) and the central wheel II (9B) to perform synchronous rotation actions. The central wheel I (9A) transmits power to a set of A specification wheels through a specification wheel transmission belt (5), thereby driving the set of A specification wheels to move and driving the cigarette in its central hole to perform synchronous rotation movement. The central wheel II (9B) transmits power to a set of B specification wheels through the specification wheel transmission belt (5), thereby driving the set of B specification wheels to move and driving the cigarette in its central hole to perform synchronous rotation movement. The A and B sets of specification wheels on the same specification are coaxial, synchronous and in the same direction for rotation movement. The set of A specification wheels includes a thick specification wheel I (10A), a medium specification wheel I (11A) and a thin specification wheel I (8A). The set of B specification wheels includes a thick specification wheel II (10B), a medium specification wheel II (11B) and a thin specification wheel II (8B). The A and B sets of specification wheels are evenly arranged on the circumference of an adjustment disc (6) through a second bearing (25). The adjustment disc (6) is respectively installed at two opposite positions of the central shaft through a first bearing (23). An elastic positioning pin (24) is installed in a corresponding hole of a fixing plate (26) on a bracket (7) and is in locking fit with the adjustment disc (6). Cigarette accommodation holes are respectively arranged at the centers of the A and B sets of specification wheels. The industrial camera (14) is arranged above the adjustment disc (6). The central light source (12) is arranged facing the adjustment disc (6) directly. The LED lighting source (4) is arranged parallel to the axial direction of the adjustment disc (6) and is arranged at an angle with the central light source (12). The industrial control computer (2) is electrically connected to the motor (15), the industrial camera (14), the LED lighting source (4) and the central light source (12).

2. The off-line cigarette circumference surface laser drilling detection device according to claim 1, characterized in that: The industrial camera (14) is arranged on a three-axis moving mechanism (13). A lens (3) is arranged on the bayonet of the industrial camera (14). The lens (3) is arranged facing the adjustment disc (6). The three-axis moving mechanism (13) can move along the X, Y, and Z axes.

3. The off-line cigarette circumference surface laser drilling detection device according to claim 2, characterized in that: The three-axis moving mechanism (13) is arranged in a device box (1).

4. The offline cigarette circumference surface laser drilling detection device according to claim 1, characterized in that: The central wheel I (9A) and the central wheel II (9B) are arranged on the central shaft through a flat key (22).

5. The off-line cigarette circumference surface laser drilling detection device according to claim 1, wherein: The driven wheel (21) is arranged on the central shaft through a flat key (22).

6. The off-line cigarette circumference surface laser drilling detection device according to claim 1, characterized in that: The central wheel I (9A) is a circular ring-shaped protrusion fixed on the central shaft, and there is a groove structure for placing the specification wheel transmission belt (5) on the protrusion.

7. The off-line cigarette circumference surface laser drilling detection device according to claim 1, wherein: The central The second round (9B) is an annular protrusion fixed on the central axis, and there is a groove structure on the protrusion for placing the specification wheel drive belt (5).

8. The off-line cigarette circumference surface laser drilling detection device according to claim 1, characterized in that: The cigarette holder The accommodating hole has an interference fit with the cigarette to be measured.

9. The offline cigarette circumference surface laser drilling detection device according to claim 3, characterized in that: The device A start-stop button is provided on the panel of the box (1).

10. The off-line cigarette circumference surface laser drilling detection device according to claim 1, characterized in that: The A group of specification wheels The coarse specification wheel I (10A), the medium specification wheel I (11A), and the fine specification wheel I (8A) of the A group of specification wheels are arranged in an equilateral triangle; the coarse specification wheel II (10B), the medium specification wheel II (11B), and the fine specification wheel II (8B) of the B group of specification wheels are arranged in an equilateral triangle.

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