Ferris wheel type cigar appearance rapid detection device

Abstract

The present invention provides a Ferris wheel type cigar appearance rapid detection device, comprising a gantry, two power turntables, several pairs of flexible clamping mechanisms and a group of array cameras; the two power turntables are respectively installed on the inner sides of two columns of the gantry, the two power turntables are concentric and the disk surfaces are arranged oppositely; several pairs of flexible clamping mechanisms are installed on the disk surfaces of the two power turntables along a circumferential array, and the two clamping ends of each pair of flexible clamping mechanisms are respectively installed at mirror positions on the disk surfaces of the two power turntables; the group of array cameras is installed in an enclosed shape, and the focus of the group of array cameras is concentrated on the walking path of the clamping area of ​​several pairs of flexible clamping mechanisms. The detection device is based on image recognition technology, and through structural design, it can realize uninterrupted continuous detection, is suitable for assembly line operation, and can greatly improve the efficiency of cigar appearance detection.

Description

Technical Field

[0001] The invention relates to the field of cigar production, and in particular to a Ferris wheel type cigar appearance rapid detection device. Background Art

[0002] Cigars are an important category of tobacco products in my country and are high-end tobacco products. With the transformation and upgrading of the tobacco consumption market, the market size of cigars is accelerating. In 2019, the growth rate of the cigar market exceeded 50%, and it is expected to grow by more than 80% in 2020.

[0003] Currently, domestic cigars include hand-rolled cigars, semi-machine-made cigars, machine-made cigars, etc. Among them, hand-rolled cigars are high-end cigars with the highest demand for raw materials, semi-machine-made cigars have higher requirements for raw materials, and machine-made cigars have lower requirements for raw materials.

[0004] No matter which type of cigar, it contains three types of cigar tobacco leaves: wrapper, binder and core. The quality of the three types of cigar tobacco leaves varies greatly. The quality requirements of cigar wrapper are mainly concentrated on the appearance quality and wrapping characteristics of the tobacco leaves, the quality requirements of cigar binder are mainly concentrated on the wrapping characteristics and burning characteristics of the tobacco leaves, and the core tobacco leaves are the main source of cigar flavor and taste, and have higher requirements for sensory quality.

[0005] Among them, the external characteristics of cigars are directly reflected in the cigar wrapper. The wrapper is also the most direct part of the cigar in terms of visual beauty. Visually, we can see the texture, color, and characteristics of the tobacco leaves of the wrapper. Touching can feel the tightness, softness, unevenness of the cigar or the wrinkles, indentations, looseness of the tobacco skin, etc. The quality of many cigars can be confirmed by looking or touching. All cigar manufacturers in the world attach great importance to the quality of the wrapper and are proud of having the best wrapper plantations.

[0006] To ensure that the cigars they produce are diverse in style and of consistent quality, they invest in cigar wrappers at all costs. Top-tier tobacco brands all have their own large-scale cigar wrapper aging warehouses. In years with abnormal climates, the stockpiled cigar wrappers can maintain the stability of quality. The higher purchase price makes tobacco farmers willing to pay high-intensity, intensive labor to cultivate first-class cigar wrappers.

[0007] This also directly determines the importance of inspecting the appearance of the cigar wrapper during the cigar production process.

[0008] The standard "GB15269.3-2011" specifically stipulates the technical requirements for cigar packaging, rolling and storage. Among them, the requirements for the appearance of cigarettes include a series of appearance parameters such as the maximum offset of the central axis, the height difference of the cut slope, rings, veins, folds, spots, stains, seams, holes, peeling, breakage, circumference, etc. These appearance parameters need to be measured item by item. At present, these measurements are mainly completed manually, and each cigar must be tested for these parameters, which will consume a lot of manpower and material resources and greatly affect the production efficiency of cigars.

[0009] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0010] The purpose of the present invention is to address the deficiencies of the prior art and to provide a Ferris wheel type cigar appearance rapid detection device based on image recognition technology, which can achieve uninterrupted continuous detection through structural design, is suitable for assembly line operations, and can greatly improve the efficiency of cigar appearance detection.

[0011] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a Ferris wheel type cigar appearance rapid detection device, including a gantry, two power turntables, a plurality of pairs of flexible clamping mechanisms and a group of area array cameras;

[0012] The two power turntables are respectively installed on the inner sides of the two upright posts of the portal frame, and the two power turntables are concentric and the disk surfaces are arranged opposite to each other;

[0013] A plurality of pairs of flexible clamping mechanisms are installed in a circumferential array on the surfaces of the two power turntables, and the two clamping ends of each pair of flexible clamping mechanisms are installed at mirror image positions on the surfaces of the two power turntables respectively;

[0014] The group of area array cameras are installed in a surrounding shape, and the focus of the group of area array cameras is concentrated on the walking paths of the clamping areas of several pairs of flexible clamping mechanisms.

[0015] Based on the above, the power turntable includes a reduction motor and a turntable, the reduction motor drives the turntable to rotate, and the reduction motor is fixed to the inner side of the column of the portal frame.

[0016] Based on the above, the clamping end of the flexible clamping mechanism includes a telescopic power rod, a pressing end and a buffer spring. The movement direction of the telescopic power rod is parallel to the axis of the turntable and toward the other clamping end opposite thereto. The pressing end is installed at the end of the telescopic power rod; a buffer spring is arranged between the pressing end and the telescopic power rod so that the pressing end has a certain amount of activity margin.

[0017] Based on the above, a guide sleeve is provided at the end of the telescopic power rod, the pressing end is a columnar member installed in the guide sleeve, the buffer spring is sleeved on the columnar member and abuts against the guide sleeve, and the guide sleeve serves as a guide member for the pressing end.

[0018] Based on the above, the end portion of the pressing end head is provided with a replaceable flexible gasket.

[0019] Based on the above, the telescopic power rod is a gas rod, the tail end of the gas rod is connected to an air circuit, the air circuit is connected to an external air supply device through an air circuit slip ring, and the air circuit slip ring is installed at the output end of the reduction motor.

[0020] Based on the above, the telescopic power rod is an electric push rod, and the electric push rod is connected to an external circuit through a circuit slip ring, and the circuit slip ring is installed at the output end of the reduction motor.

[0021] Based on the above, the group of area array cameras includes at least three area array cameras, and the sum of the shooting boundaries of the at least three area array cameras can cover at least 180°.

[0022] Based on the above, a cross bar is installed on the portal frame at a position corresponding to the axis of the disk, and the cross bar is fixed to the portal frame; there are three area array cameras, two of which are installed on the top beam of the portal frame, and the other is installed on the cross bar; the turntable is installed on the cross bar through a bearing, and the reduction motor drives the turntable to rotate through a gear set.

[0023] Based on the above, there are three area array cameras, two of which are installed on the top beam of the portal frame, and the other one is installed on the ground through a bracket; a rotating shaft is connected between the turntables.

[0024] Based on the above, an encoder is installed on the reduction motor, and the control end of the encoder and the motor is connected to a host computer. The host computer controls the working state of each telescopic power rod and the area array camera through the encoder, the reduction motor, the size of the turntable and the size of the flexible clamping mechanism.

[0025] Based on the above, at least two groups of through-beam sensors are relatively arranged on each pair of flexible clamping mechanisms, at least one group of through-beam sensors is used to sense cigars, and at least one group of through-beam sensors is used to sense cigar conveyor belts. The through-beam sensors are connected to a host computer, and the host computer controls the working status of the telescopic power rod and the area array camera according to the sensing signals of the through-beam sensors.

[0026] The present invention has outstanding substantial features and significant progress compared with the prior art. Specifically, based on the image recognition technology, the present invention designs the Ferris wheel-type cigar appearance rapid detection device for the cigar production line. The core of the device is that the cigar is clamped by a rotating action and transferred from the upstream conveyor belt to the downstream conveyor belt. In this process, the clamped cigar passes through the photographing area arranged by the area array camera, and the entire circumference of the cigar is photographed. Since the two-end clamping method is adopted, the blind spots that may exist in the photography can be avoided, and the shooting boundaries of a group of cameras are reasonably arranged, and the sum is at least greater than 180 degrees. Through the seam splicing of the later software, the image data of the entire unfolded surface of the cigar can be obtained, and the evaluation of the appearance of the cigar is obtained by recognizing and judging the image data.

[0027] Furthermore, by adopting a Ferris wheel-style structural design and providing multiple pairs of flexible clamping mechanisms, continuous and uninterrupted detection can be achieved, detection efficiency is greatly improved, detection points and detection viewing angles are relatively stable, and detection consistency is guaranteed.

[0028] Furthermore, the flexible clamping structure can avoid cigars from being pinched, thus ensuring the safety of the cigar detection process.

[0029] Furthermore, the power of the flexible clamping structure can be pneumatic or electric, which can be selected according to needs, with higher flexibility.

[0030] Furthermore, the precise control layer uses encoder calculation or sensor detection to achieve a perfect match between the flexible clamping mechanism and the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the Ferris wheel type cigar appearance rapid detection device of the present invention.

[0032] Figure 2 It is a schematic diagram of the application state of the Ferris wheel type cigar appearance rapid detection device of the present invention.

[0033] Figure 3 It is a cross-sectional view of the top pressing end in the present invention.

[0034] In the figure: 1. gantry; 2. power turntable; 2-1. reduction motor; 2-2. turntable; 3. flexible clamping mechanism; 3-1. telescopic power rod; 3-2. top pressure end; 3-3. buffer spring; 3-4. guide sleeve; 3-5. flexible gasket; 3-6. air path slip ring; 4. area array camera; 5. rotating shaft; 6. cigar; 7. upstream conveyor belt; 8. downstream conveyor belt. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0036] like Figure 1-Figure 3 As shown, a Ferris wheel type cigar appearance rapid detection device includes a gantry frame 1, two power turntables 2, a plurality of pairs of flexible clamping mechanisms 3 and a group of area array cameras 4;

[0037] The two power turntables 2 are respectively installed on the inner sides of the two columns of the portal frame 1. The two power turntables 2 are concentric and the disk surfaces are arranged opposite to each other. The power turntable 2 includes a reduction motor 2-1 and a turntable 2-2. The reduction motor 2-1 can directly drive or drive the turntable 2-2 to rotate through a gear set. The reduction motor 2-1 is fixed on the inner side of the column of the portal frame 1.

[0038] A plurality of pairs of flexible clamping mechanisms 3 are installed on the surfaces of the two power turntables 2 along a circumferential array, and the two clamping ends of each pair of flexible clamping mechanisms 3 are respectively installed at mirror positions on the surfaces of the two power turntables 2, and the clamping ends of the flexible clamping mechanisms 3 include a telescopic power rod 3-1, a top pressure end 3-2 and a buffer spring 3-3. The movement direction of the telescopic power rod 3-1 is parallel to the axis of the turntable and faces the other clamping end opposite thereto, and the top pressure end 3-2 is installed at the end of the telescopic power rod 3-1; a buffer spring 3-3 is arranged between the top pressure end 3-2 and the telescopic power rod 3-1, so that the top pressure end 3-2 has a certain amount of movable margin, and a replaceable flexible gasket 3-5 is arranged at the end of the top pressure end 3-2, which is mainly used to protect cigars and can be replaced regularly.

[0039] In order to ensure the stability of the movement of the pressing end 3-2, a guide sleeve 3-4 is provided at the end of the telescopic power rod. The pressing end 3-2 is a cylindrical part installed in the guide sleeve. The buffer spring 3-3 is sleeved on the cylindrical part and abuts against the guide sleeve. The guide sleeve 3-4 serves as a guide for the pressing end 3-2.

[0040] There are two main types of applications for the telescopic power rod 3-1. In this embodiment, a gas rod is selected. The tail end of the gas rod is connected to an air path. The air path is connected to an external air supply device through an air path slip ring 3-6. The air path slip ring 3-6 is installed at the output end of the reduction motor 2-1.

[0041] In other embodiments, the telescopic power rod can also be an electric push rod, which is connected to an external circuit through a circuit slip ring, and the circuit slip ring is installed at the output end of the reduction motor. The two application methods have their own advantages and can be selected according to needs.

[0042] The group of area array cameras 4 are installed in an enclosed shape, and the focus of the group of area array cameras 4 is concentrated on the walking path of the clamping area of ​​several pairs of flexible clamping mechanisms. A group of area array cameras includes at least three cameras, three in this embodiment, and the shooting boundaries of the three area array cameras added together can cover at least 180°.

[0043] In order to install three area array cameras, two of them are installed on the top beam of the portal frame, and the other one is installed on the ground through a bracket; a rotating shaft 5 is connected between the turntables.

[0044] In other embodiments, a cross bar is installed on the portal frame 1 at a position corresponding to the axis of the disk, and the cross bar is fixed to the portal frame; two area array cameras are installed on the top beam of the portal frame, and the other area array camera is installed on the cross bar; the turntable is installed on the cross bar through a bearing, and the reduction motor drives the turntable to rotate through a gear set.

[0045] In order to achieve precise control, there are two implementation options, one of which is:

[0046] An encoder is installed on the reduction motor 2-1, and the control end of the encoder and the motor is connected to a host computer. The host computer controls the working state of each telescopic power rod and the area array camera through the encoder, the reduction motor, the size of the turntable and the size of the flexible clamping mechanism.

[0047] The second precise control method relies on sensors. At least two groups of through-beam sensors are relatively arranged on each pair of flexible clamping mechanisms. At least one group of through-beam sensors is used to sense cigars, and at least one group of through-beam sensors is used to sense cigar conveyor belts. The through-beam sensors are connected to a host computer, and the host computer controls the working status of the telescopic power rod and the area array camera according to the sensing signals of the through-beam sensors.

[0048] The first control method is selected in this embodiment.

[0049] Working principle:

[0050] The Ferris wheel type cigar appearance rapid detection device is installed between the upstream conveyor belt 7 and the downstream conveyor belt 8. The structure of the conveyor belt is a grid type. The cigars 6 are separated by the grid structure on the conveyor belt and conveyed one by one to the downstream. Since the stability of the conveyor belt and the size of the grid structure are uniform, the time when each cigar reaches the detection device can be basically determined by calculating the transmission speed. Then, according to the data on the detection device, the flexible clamping mechanism 3 can be accurately controlled to clamp and release when.

[0051] After the cigar reaches the clamping position, the flexible clamping mechanism 3 also moves into place synchronously and clamps at both ends of the cigar under control. The cigar is lifted up by the flexible clamping mechanism 3, and moves in a circular motion driven by the rotation of the turntable and is transferred to the downstream conveyor belt. During this process, the cigar passes through the shooting area surrounded by three area array cameras. The area array cameras capture the appearance image data of the cigar, mark it with a number, and upload it to the background data center. The cigar continues to move. After reaching the release position, the flexible clamping mechanism 3 releases the cigar, and the cigar falls into the grille of the downstream conveyor belt and continues to move with the downstream conveyor belt.

[0052] The appearance image data of the cigar is processed in the background as follows: the image data obtained by three area array cameras are screened and then stitched into the circular surface unfolded data of the cigar. A series of appearance parameters such as the maximum offset of the central axis, the height difference of the incision slope, rings, veins, folds, spots, stains, seams, holes, peeling, breakage, circumference, etc. are calculated and identified, and finally an evaluation is given.

[0053] Since the image processing part is implemented with the help of various existing image recognition software and only provides some parameters, this part of the content does not belong to the innovation of this application, but belongs to the existing technology. The implementation of this part of the technology will not be described in more detail, and its goal can be achieved with the help of most image recognition technologies.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A Ferris wheel type cigar appearance rapid detection device, characterized in that: It includes a gantry, two powered turntables, several pairs of flexible clamping mechanisms and a group of area array cameras; The two power turntables are respectively installed on the inner sides of the two upright posts of the portal frame, and the two power turntables are concentric and the disk surfaces are arranged opposite to each other; A plurality of pairs of flexible clamping mechanisms are installed in a circumferential array on the surfaces of the two power turntables, and the two clamping ends of each pair of flexible clamping mechanisms are installed at mirror image positions on the surfaces of the two power turntables respectively; The group of area array cameras are installed in an enclosed shape, and the focus of the group of area array cameras is concentrated on the walking paths of the clamping areas of several pairs of flexible clamping mechanisms; the clamping end of the flexible clamping mechanism includes a telescopic power rod, a pressing end head and a buffer spring, the movement direction of the telescopic power rod is parallel to the axis of the power turntable and faces the other clamping end opposite thereto, and the pressing end head is installed at the end of the telescopic power rod; a buffer spring is arranged between the pressing end head and the telescopic power rod so that the pressing end head has a certain amount of activity margin; a guide sleeve is arranged at the end of the telescopic power rod, the pressing end head is a columnar member installed in the guide sleeve, the buffer spring is sleeved on the columnar member and abuts against the guide sleeve, the guide sleeve serves as a guide member of the pressing end head, and a replaceable flexible gasket is arranged at the end head of the pressing end head.

2. The Ferris wheel type cigar appearance rapid detection device according to claim 1, characterized in that: The power turntable comprises a reduction motor and a turntable. The reduction motor drives the turntable to rotate. The reduction motor is fixed to the inner side of the column of the portal frame.

3. The Ferris wheel type cigar appearance rapid detection device according to claim 2, characterized in that: The telescopic power rod is a gas rod, the tail end of which is connected to an air path, which is connected to an external air supply device via an air path slip ring, and the air path slip ring is installed at the output end of the reduction motor.

4. The Ferris wheel type cigar appearance rapid detection device according to claim 2, characterized in that: The telescopic power rod is an electric push rod, and the electric push rod is connected to an external circuit through a circuit slip ring, and the circuit slip ring is installed at the output end of the reduction motor.

5. The Ferris wheel type cigar appearance rapid detection device according to claim 3 or 4, characterized in that: An encoder is installed on the reduction motor, and the control end of the encoder and the motor is connected to a host computer. The host computer controls the working state of each telescopic power rod and the area array camera through the encoder, the reduction motor, the size of the turntable and the size of the flexible clamping mechanism.

6. The Ferris wheel type cigar appearance rapid detection device according to claim 3 or 4, characterized in that: At least two groups of through-beam sensors are arranged relatively on each pair of flexible clamping mechanisms, at least one group of through-beam sensors is used to sense cigars, and at least one group of through-beam sensors is used to sense cigar conveyor belts. The through-beam sensors are connected to a host computer, and the host computer controls the working status of the telescopic power rod and the area array camera according to the sensing signals of the through-beam sensors.

7. The Ferris wheel type cigar appearance rapid detection device according to claim 6, characterized in that: A cross bar is installed on the portal frame at a position corresponding to the axis of the disk, and the cross bar is fixed to the portal frame; the group of area array cameras includes at least three area array cameras, and the shooting boundaries of the at least three area array cameras can add up to cover at least 180°, two of which are installed on the top beam of the portal frame, and the other is installed on the cross bar; the turntable is installed on the cross bar through a bearing, and the reduction motor drives the turntable to rotate through a gear set.

8. The Ferris wheel type cigar appearance rapid detection device according to claim 6, characterized in that: There are three area array cameras in total, two of which are installed on the top beam of the portal frame, and the other one is installed on the ground through a bracket; a rotating shaft is connected between the turntables.

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