Single cigarette rotary conveying and removing system and device based on machine vision

Abstract

The utility model provides a single cigarette rotary conveying and removing system based on machine vision, which comprises a cigarette conveying unit, a cigarette staying unit, a cigarette detecting unit, a cigarette falling unit and a cigarette removing unit, and the cigarette conveying unit conveys a plurality of cigarettes in a cigarette warehouse area; the cigarette staying unit is sequentially connected with the cigarette conveying unit, and the cigarette staying unit stays the cigarettes conveyed by the cigarette conveying unit for a fixed time; the cigarette detection unit is used for detecting the cigarettes of the cigarette staying unit within a fixed time and outputting a detection result; the cigarette falling unit is used for falling normal cigarettes in a detection result output by the cigarette detection unit into a lower slide way of a cigarette warehouse area; and the cigarette rejecting unit rejects empty cigarettes in the detection result output by the cigarette detection unit out of the cigarette discharging warehouse area. When the empty-end cigarettes are detected, the empty-end cigarettes are removed out of the cigarette discharging warehouse area, and normal cigarettes are normally packaged through the cigarette falling unit. The cigarette production quality is greatly reduced, and remarkable economic value is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cigarette detection, and in particular to a single cigarette rotary conveying and rejection system and device based on machine vision. Background Technology

[0002] Cigarette empty tube detection is a crucial step in the tobacco production process. Advanced detection technologies and methods are employed to ensure the quality of finished cigarette packaging. Various principles can be used for cigarette empty tube detection, including optical, machine vision, and magnetic sensing. Optical detection utilizes light illuminating the inside of the cigarette and detecting changes in reflected or transmitted light to determine the tobacco filling. Machine vision uses image sensors to capture images of the cigarette's end face, employs image processing technology to identify the cigarette's outline, calculates its area or pixel count, and compares it to a baseline value to determine if the cigarette is empty. Magnetic sensing is based on the Hall effect, converting magnetic information into an electrical signal and detecting changes in the magnetic field inside the cigarette to determine the presence of an empty tube.

[0003] Existing machine vision inspection technology uses an image sensor to acquire an image of the end face of the cigarette to be inspected. The central axis of the image sensor's optical lens forms an angle with the cigarette to better capture the image of the cigarette's end face. The acquired image of the cigarette's end face is transmitted to a computer, where image processing technology is used to locate and draw the outline of the tobacco shred area, and calculate its area or number of pixels. The calculated area or number of pixels of the tobacco shred area is compared with a benchmark value; if it is lower than the benchmark value, the cigarette is determined to be an empty tube.

[0004] When using machine vision inspection technology for cigarette tube inspection, ensuring inspection accuracy and stability, and avoiding misjudgments or omissions, has become an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a single-cigarette rotary conveying and rejection system and device based on machine vision. A cigarette conveying unit installed in the lower cigarette storage area transports cigarettes to a cigarette holding unit. Machine vision technology is used to detect empty cigarette ends; when an empty cigarette is detected, it is rejected from the lower cigarette storage area. Normal cigarettes are then packaged normally via a cigarette falling unit. This significantly reduces cigarette production quality issues and has significant economic value.

[0006] The technical solution to achieve the purpose of this utility model is as follows:

[0007] On the one hand, this utility model provides a single-cigarette rotary conveying and rejecting system based on machine vision. The single-cigarette rotary conveying and rejecting system is installed in the lower cigarette storage area of ​​the cigarette packaging machine. The single-cigarette rotary conveying and rejecting system includes:

[0008] A cigarette conveying unit, which conveys a number of cigarettes from the lower cigarette storage area;

[0009] A cigarette holding unit is connected in sequence with the cigarette conveying unit, and the cigarette holding unit holds the cigarettes conveyed by the cigarette conveying unit for a fixed time;

[0010] A cigarette detection unit detects cigarettes in the cigarette dwelling unit within a fixed time period and outputs the detection results.

[0011] The cigarette dropping unit drops normal cigarettes from the detection results output by the cigarette detection unit into the sliding chute in the cigarette storage area.

[0012] The cigarette rejection unit removes empty cigarettes from the lower tobacco storage area based on the detection results output by the cigarette detection unit.

[0013] Based on this aspect, as a further improvement of the present invention, the cigarette conveying unit includes: a plurality of cigarette conveying channels arranged in parallel; each of the cigarette conveying channels is arranged with multiple cigarettes; the cigarette at the foremost position in the cigarette conveying channel enters the cigarette holding unit.

[0014] Based on this aspect, as a further improvement of the present invention, the cigarette holding unit includes a plurality of cigarette holding modules, and the cigarette falling unit includes a plurality of cigarette falling modules.

[0015] Each cigarette delivery channel corresponds to one cigarette holding module, and each cigarette holding module corresponds to one cigarette falling module.

[0016] Based on this aspect, as a further improvement of the present invention, there are 30±10 cigarette conveying channels, and each cigarette conveying channel is connected to a cigarette holding module and a cigarette falling module.

[0017] Based on this, as a further improvement of the present invention, the cigarette holding module and the cigarette falling module corresponding to the same cigarette conveying channel share the same set of rotary mechanisms.

[0018] Based on this aspect, as a further improvement of the present invention, the rotary mechanism includes: a rotating wheel for stopping or releasing a single cigarette, and a motor for driving the rotating wheel to rotate;

[0019] The motor drives the rotating wheel to rotate, blocking the opening of the cigarette delivery channel to allow a single cigarette to stay, or opening the opening of the cigarette delivery channel to allow a single cigarette to fall.

[0020] In one respect, as a further improvement of this utility model, the motor and the rotating wheel are connected by an eccentric wheel.

[0021] Based on this aspect, as a further improvement of the present invention, the cigarette detection unit includes a detection probe, which captures an image of the cigarette end face and detects empty cigarettes.

[0022] Based on this aspect, as a further improvement of the present invention, the cigarette rejection unit includes a rejection nozzle and a downward channel. The rejection nozzle corresponds to the cigarette holding unit, and the cigarette holding unit includes a plurality of cigarette holding modules, each of the cigarette holding modules corresponding to one downward channel.

[0023] The empty cigarette in the cigarette holder module enters the downward channel through the ejector nozzle.

[0024] On the other hand, this utility model provides a single cigarette rotary conveying rejection device based on machine vision. The single cigarette rotary conveying rejection device is installed in the lower cigarette storage area of ​​the cigarette packaging machine. The single cigarette rotary conveying rejection device includes: several cigarette conveying channels, several rotating wheels, a drive component for driving the rotating wheels to rotate, a detection probe, rejection nozzle, a downward sliding channel and a cigarette falling channel.

[0025] Each of the cigarette conveying channels is equipped with a rotating wheel at its end, on which a single cigarette rests; the detection probe detects whether the single cigarette is an empty cigarette or a normal cigarette; the downward channel conveys empty cigarettes, and the cigarette falling channel conveys normal cigarettes.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] This invention involves installing a cigarette conveying unit in the lower cigarette storage area to transport cigarettes to a cigarette holding unit. Machine vision technology is used to detect empty cigarettes; when an empty cigarette is detected, it is removed from the lower cigarette storage area. Normal cigarettes are then packaged using the cigarette dropping unit. This significantly reduces the quality issues in cigarette production and has substantial economic value. Attached Figure Description

[0028] Figure 1 A schematic diagram of a single cigarette rotary conveying and rejection system based on machine vision provided by this utility model;

[0029] Figure 2 A structural diagram of a single cigarette rotary conveying and rejection device based on machine vision provided by this utility model;

[0030] Figure 3 Figure 2 shows the structure of a single cigarette rotary conveying and rejection device based on machine vision provided by this utility model;

[0031] Reference numerals: 1-Cigarette conveying channel; 2-Rotating wheel; 3-Drive assembly; 4-Single cigarette; 5-Rejecting nozzle; 6-Rotating gearbox; 7-Rotating motor; 8-Encoder. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, it should be noted that these embodiments are not intended to limit the present invention. Equivalent transformations or substitutions in function, method, or structure made by those skilled in the art based on these embodiments are all within the protection scope of the present invention.

[0033] Please see Figure 1 This utility model discloses a single-cigarette rotary conveying and rejecting system based on machine vision. The single-cigarette rotary conveying and rejecting system is installed in the lower cigarette storage area of ​​a cigarette packaging machine. The system includes: a cigarette conveying unit, a cigarette holding unit, a cigarette detection unit, a cigarette falling unit, and a cigarette rejecting unit. The cigarette conveying unit conveys several cigarettes from the lower cigarette storage area; the cigarette holding unit is connected to the cigarette conveying unit and holds the cigarettes conveyed by the cigarette conveying unit for a fixed time; the cigarette detection unit detects the cigarettes in the cigarette holding unit within the fixed time and outputs the detection results; the cigarette falling unit drops the normal cigarettes from the detection results into the sliding chute of the cigarette storage area; and the cigarette rejecting unit rejects empty cigarettes from the lower cigarette storage area.

[0034] Please continue reading. Figure 1 The cigarette conveying unit of this utility model embodiment includes: a plurality of cigarette conveying channels arranged in parallel; each cigarette conveying channel has a plurality of cigarettes arranged in it; the cigarette at the front of the cigarette conveying channel enters the cigarette holding unit.

[0035] In a preferred embodiment of this utility model, the cigarette holding unit includes a plurality of cigarette holding modules, and the cigarette falling unit includes a plurality of cigarette falling modules; each cigarette conveying channel corresponds to one cigarette holding module, and each cigarette holding module corresponds to one cigarette falling module. In practical applications, this utility model embodiment has 30±10 cigarette conveying channels, and each cigarette conveying channel connects one cigarette holding module and one cigarette falling module.

[0036] To facilitate control of the cigarette holding module and the cigarette falling module, in this embodiment of the invention, the cigarette holding module and the cigarette falling module corresponding to the same cigarette conveying channel share the same set of rotary mechanisms. Please refer to... Figure 2 and Figure 3The rotary mechanism of this utility model embodiment includes: a rotating wheel for stopping or releasing a single cigarette, and a motor for driving the rotating wheel to rotate; the motor drives the rotating wheel to rotate, blocking the channel opening of the cigarette conveying channel for a single cigarette to stop, or opening the channel opening of the cigarette conveying channel for a single cigarette to fall.

[0037] To facilitate the connection between the motor and the rotating wheel via an eccentric wheel, the cigarette detection unit in this embodiment includes a detection probe. The detection probe captures an image of the cigarette's end face and detects empty cigarettes. Please continue reading. Figure 2 and Figure 3 The cigarette rejection unit of this utility model embodiment includes a rejection nozzle 5 and a downward channel. The rejection nozzle 5 corresponds to a cigarette holding unit, which includes several cigarette holding modules. Each cigarette holding module corresponds to a downward channel. Empty cigarettes in the cigarette holding module enter the downward channel through the rejection nozzle 5.

[0038] Please continue reading Figure 2 and Figure 3 This utility model embodiment also discloses a single cigarette rotary conveying and rejecting device based on machine vision. The single cigarette rotary conveying and rejecting device is installed in the lower cigarette storage area of ​​the cigarette packaging machine. The single cigarette rotary conveying and rejecting device includes: several cigarette conveying channels 1, several rotating wheels 2, a drive assembly 3 for driving the rotating wheels 2 to rotate, a detection probe, a rejecting nozzle 5, a downward sliding channel, and a cigarette falling channel; a rotating wheel 2 is installed at the end of each cigarette conveying channel 1, and a single cigarette 4 rests on the rotating wheel 2; the detection probe detects whether the single cigarette 4 is an empty cigarette or a normal cigarette, the downward sliding channel conveys empty cigarettes, and the cigarette falling channel conveys normal cigarettes.

[0039] The detection probe in a preferred embodiment of this invention includes an LED light source, a high-speed camera, and other mechanical accessories to capture images of the cigarette's end face for detecting empty cigarettes. The drive assembly 3 in this embodiment uses a servo motor from a well-known brand, controlling the rotation angle of the rotating wheel 2 based on the encoder 8. The motor's forward and reverse rotation causes the eccentric wheel to rotate in both directions, which in turn drives the gear to rotate. The rotating wheel 2 and the gear are integrated, ultimately achieving a 180-degree rotation of the rotating wheel 2. If a good cigarette is detected, the rotating wheel 2 rotates 180 degrees forward, allowing the cigarette to fall freely into the sliding channel. The rotating wheel 2 then quickly rotates another 180 degrees to return to its original position.

[0040] It should be noted that, in order to detect empty cigarettes in this embodiment of the invention, after the cigarette enters the end of the cigarette conveying channel 1, the rotating wheel 2 does not move, and the cigarette remains in place for a fixed period of time while the machine vision system performs the detection. Simultaneously, the detection result is output. If the cigarette is defective, the detected cigarette is blown away from the rotating wheel 2 by an air gun, meaning the defective cigarette enters the rejection channel. If the cigarette is good, the rotating wheel 2 rotates 180 degrees, causing the detected cigarette to fall into the downward sliding channel.

[0041] This invention, through the installation of a cigarette conveying unit in the lower cigarette storage area, transports cigarettes to a cigarette holding unit. Machine vision technology is used to detect empty cigarettes; when an empty cigarette is detected, it is removed from the lower cigarette storage area. Normal cigarettes are then packaged using the cigarette dropping unit. This significantly reduces the quality issues in cigarette production and has substantial economic value.

[0042] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A single-cigarette rotary conveying and rejection system based on machine vision, characterized in that, The lower cigarette storage area, located within the cigarette packaging machine, includes: A cigarette conveying unit, which conveys a number of cigarettes from the lower cigarette storage area; A cigarette holding unit is connected in sequence with the cigarette conveying unit, and the cigarette holding unit holds the cigarettes conveyed by the cigarette conveying unit for a fixed time; A cigarette detection unit detects cigarettes in the cigarette dwelling unit within a fixed time period and outputs the detection results. The cigarette dropping unit drops normal cigarettes from the detection results output by the cigarette detection unit into the sliding chute in the cigarette storage area. The cigarette rejection unit removes empty cigarettes from the lower tobacco storage area based on the detection results output by the cigarette detection unit.

2. The single-cigarette rotary conveying and rejection system based on machine vision according to claim 1, characterized in that, The cigarette delivery unit includes: several cigarette delivery channels arranged in parallel; each cigarette delivery channel has multiple cigarettes arranged in it; the cigarette at the front of each cigarette delivery channel enters the cigarette holding unit.

3. The single-cigarette rotary conveying and rejection system based on machine vision according to claim 2, characterized in that, The cigarette holding unit includes several cigarette holding modules, and the cigarette falling unit includes several cigarette falling modules. Each cigarette delivery channel corresponds to one cigarette holding module, and each cigarette holding module corresponds to one cigarette falling module.

4. The single-cigarette rotary conveying and rejection system based on machine vision according to claim 3, characterized in that, There are 30±10 cigarette delivery channels, and each cigarette delivery channel is connected to a cigarette holding module and a cigarette dropping module.

5. A single cigarette rotary conveying and rejection system based on machine vision according to claim 3 or 4, characterized in that, The cigarette holding module and the cigarette falling module corresponding to the same cigarette conveying channel share the same set of rotary mechanisms.

6. A single cigarette rotary conveying and rejection system based on machine vision according to claim 5, characterized in that, The rotary mechanism includes: a rotating wheel for stopping or releasing a single cigarette, and a motor for driving the rotating wheel to rotate; The motor drives the rotating wheel to rotate, blocking the opening of the cigarette delivery channel to allow a single cigarette to stay, or opening the opening of the cigarette delivery channel to allow a single cigarette to fall.

7. A single cigarette rotary conveying and rejection system based on machine vision according to claim 6, characterized in that, The motor and the rotating wheel are connected by an eccentric wheel.

8. A single cigarette rotary conveying and rejection system based on machine vision according to claim 1, characterized in that, The cigarette detection unit includes a detection probe that captures an image of the cigarette end face and detects empty cigarettes.

9. A single cigarette rotary conveying and rejection system based on machine vision according to claim 1, characterized in that, The cigarette rejection unit includes a rejection nozzle and a downward channel. The rejection nozzle corresponds to the cigarette holding unit. The cigarette holding unit includes several cigarette holding modules, and each cigarette holding module corresponds to one downward channel. The empty cigarette in the cigarette holder module enters the downward channel through the ejector nozzle.

10. A single-cigarette rotary conveying and rejection device based on machine vision, characterized in that, A single cigarette rotary conveying rejection device is installed in the lower cigarette storage area of ​​the cigarette packaging machine. The single cigarette rotary conveying rejection device includes: several cigarette conveying channels, several rotating wheels, a drive assembly for driving the rotating wheels to rotate, a detection probe, a rejection nozzle, a downward sliding channel, and a cigarette falling channel. Each of the cigarette conveying channels is equipped with a rotating wheel at its end, on which a single cigarette rests; the detection probe detects whether the single cigarette is an empty cigarette or a normal cigarette; the downward channel conveys empty cigarettes, and the cigarette falling channel conveys normal cigarettes.

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