Single cigarette differential shifting type conveying and removing device based on machine vision

Abstract

The utility model provides a machine vision-based single cigarette differential shifting type conveying and rejecting device, which is mounted in a lower cigarette warehouse area of a cigarette packaging machine and comprises a conveying module, a detection module, a blocking module and a rejecting module, the conveying module comprises a pre-blocking conveying sub-module and a post-blocking conveying sub-module, the detection module is arranged close to the pre-blocking conveying sub-module, and the blocking module is arranged between the pre-blocking conveying sub-module and the post-blocking conveying sub-module; and the blocking module comprises a differential shifting unit, an angle control piece for controlling the progress of the differential shifting unit, and a motor for driving the angle control piece to move. Cigarettes are conveyed to the cigarette intercepting module through the cigarette conveying channel installed in the cigarette discharging warehouse area, empty cigarettes are removed out of the cigarette discharging warehouse area when being detected, 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 differential conveying and rejection 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 differential conveying and rejection device based on machine vision. The cigarette conveying channel, installed in the lower cigarette storage area, transports cigarettes to the blocking module. 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 processed and packaged normally through the rejection module. This significantly reduces the quality issues in cigarette production and has substantial economic value.

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

[0007] A machine vision-based single cigarette differential conveying and rejection device is installed in the lower cigarette storage area of ​​a cigarette packaging machine. The single cigarette differential conveying and rejection device includes a conveying module, a detection module, a blocking module, and a rejection module.

[0008] The conveying module includes a pre-blocking conveying sub-module and a post-blocking conveying sub-module. The detection module is located close to the pre-blocking conveying sub-module. The blocking module is located between the pre-blocking conveying sub-module and the post-blocking conveying sub-module. The rejection module is a rejection nozzle.

[0009] The blocking module includes a differential lever unit, an angle control component that controls the progress of the differential lever unit, and a motor that drives the angle control component to move. After the differential lever moves to the blocking position, a delivery submodule is used to release the cigarettes. Before the differential lever unit moves to the blocking position, a delivery submodule is used to intercept the cigarettes for detection by the detection module.

[0010] As a further improvement of this utility model, the differential unit includes several differential levers, which are arranged laterally.

[0011] The pre-interception conveying submodule includes several pre-interception conveying channels, and the post-interception conveying submodule includes several post-interception conveying channels.

[0012] Each differential lever corresponds to a differential channel. Multiple cigarettes in each blocking front conveyor module are arranged, and the cigarettes in front are blocked or released through the differential lever.

[0013] As a further improvement of this utility model, the conveying channel after interception is a downward sliding channel, which is located on the rear side of the differential lever.

[0014] As a further improvement of this utility model, the several pre-blocking conveying channels and the several post-blocking conveying channels are divided into multiple groups in the horizontal direction;

[0015] A partition is installed between the pre-interception conveying channel and the post-interception conveying channel of each group.

[0016] As a further improvement of this utility model, the detection module detects the cigarettes in the blocking module within a fixed time period and outputs the detection results;

[0017] The interception and conveying submodule will drop the normal cigarettes from the detection results output by the cigarette detection unit into the slide of the cigarette storage area;

[0018] The rejection module removes empty cigarettes from the lower tobacco storage area based on the detection results output by the cigarette detection unit.

[0019] As a further improvement of this utility model, the differential lever is connected to the encoder and the motor, and the motor controls the movement of the differential lever through the encoder.

[0020] As a further improvement of this utility model, the detection module comprises multiple detection probes, which are arranged in parallel.

[0021] The detection probe detects whether the cigarette on the interception module is a normal cigarette or an abnormal cigarette.

[0022] The interception and conveying submodule includes an rejection conveying channel and a cigarette falling channel. The rejection conveying channel conveys abnormal cigarettes, while the cigarette falling channel conveys normal cigarettes.

[0023] As a further improvement of this utility model, the differential lever is located above the guide rail, and the guide rail is located below the differential lever, with the guide rail connected to the eccentric wheel;

[0024] The synchronous pulley on the eccentric wheel drives the encoder to move through the motor, and the encoder is connected to the motor.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This invention relates to a cigarette conveying channel installed in the lower cigarette storage area. The channel transports cigarettes to a blocking module, which uses machine vision technology to detect empty cigarette heads. When an empty cigarette head is detected, it is removed from the lower cigarette storage area. Normal cigarettes are then processed and packaged normally by the rejection module. This significantly reduces the quality issues in cigarette production and has substantial economic value. Attached Figure Description

[0027] Figure 1 A schematic diagram of a single cigarette differential conveying and rejection device based on machine vision provided by this utility model. Figure 1 ;

[0028] Figure 2 A schematic diagram of a single cigarette differential conveying and rejection device based on machine vision provided by this utility model. Figure 2 ;

[0029] Reference numerals in the attached diagram: 1-Shift fork; 2-Guide rail; 3-Eccentric wheel; 4-First synchronous pulley; 5-Motor; 6-Synchronous belt; 7-Second synchronous pulley; 8-Encoder; 9-Cigarette; 10-Conveying module. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1 and Figure 2This utility model embodiment provides a single cigarette differential conveying and rejection device based on machine vision. The single cigarette differential conveying and rejection device is installed in the lower cigarette storage area of ​​a cigarette packaging machine. The single cigarette differential conveying and rejection device includes a conveying module, a detection module, a blocking module, and a rejection module. The conveying module includes a pre-blocking conveying sub-module and a post-blocking conveying sub-module. The detection module is located close to the pre-blocking conveying sub-module. The blocking module is located between the pre-blocking and post-blocking conveying sub-modules. The rejection module is a rejection nozzle. The blocking module includes a differential unit, an angle control component that controls the progress of the differential unit, and a motor 5 that drives the angle control component. The differential lever moves to the post-blocking conveying sub-module to release the cigarette, and the differential unit moves to the pre-blocking conveying sub-module to intercept the cigarette for detection by the detection module.

[0032] The differential control unit of this utility model embodiment includes several differential control rods arranged horizontally; the pre-blocking conveying submodule includes several pre-blocking conveying channels, and the post-blocking conveying submodule includes several post-blocking conveying channels; each differential control rod corresponds to one differential control channel, and multiple cigarettes are arranged in each pre-blocking conveying submodule, with the cigarettes in front being intercepted or released by the differential control rods. The post-blocking conveying channel of this utility model embodiment is a downward sliding channel located behind the differential control rods. The several pre-blocking and post-blocking conveying channels of this utility model embodiment are divided into multiple groups horizontally; a partition is provided between each group of pre-blocking and post-blocking conveying channels.

[0033] In this embodiment of the invention, the detection module detects the cigarettes in the blocking module within a fixed time period and outputs the detection results. The conveying submodule then guides the normal cigarettes from the detection results output by the cigarette detection unit into the sliding chute of the cigarette storage area. The rejection module removes empty cigarettes from the lower cigarette storage area from the detection results output by the cigarette detection unit. In this embodiment of the invention, the differential lever connects the encoder 8 and the motor 5, and the motor 5 controls the movement of the differential lever through the encoder 8.

[0034] The detection module of this embodiment comprises multiple detection probes arranged in parallel. The detection probes detect whether the cigarettes on the interception module are normal or abnormal. The post-interception conveying submodule includes a rejection conveying channel and a cigarette falling channel. The rejection conveying channel conveys abnormal cigarettes, while the cigarette falling channel conveys normal cigarettes. It should be noted that the detection probes in this embodiment include an LED light source, a high-speed camera, and other mechanical accessories to capture images of the cigarette's end face for detecting empty cigarette ends. The differential mechanism uses a servo motor 5, which controls the left and right forward travel of the differential lever based on the angle of the encoder 8. The motor 5 moves in both directions along the channel to achieve the left and right movement of the differential lever. If a good cigarette is detected, the differential lever moves to the right, pushing the cigarette onto the sliding track, and then quickly returns to its original position on the left. The encoding synchronization mechanism in this embodiment is provided by the original encoder 8, providing phase signals for the movement of the differential lever, camera and light source triggering, and defective cigarette tracking and rejection.

[0035] The post-conveying submodule of this utility model presents smoke falling in an orderly fashion during the smoke discharge process. After being diverted, the smoke enters various channels (30 channels). Each channel has a differential lever and a sliding chute. In this utility model embodiment, the differential lever is located above the guide rail 2, and the guide rail 2 is located below the differential lever. The guide rail 2 is connected to the eccentric wheel 3. The synchronous pulley on the eccentric wheel 3 drives the encoder 8 to move through the motor 5. The encoder 8 is connected to the motor 5.

[0036] This invention relates to a cigarette conveying channel installed in the lower cigarette storage area. The channel transports cigarettes to a blocking module, which uses machine vision technology to detect empty cigarette heads. When an empty cigarette head is detected, it is removed from the lower cigarette storage area. Normal cigarettes are then processed and packaged normally by the rejection module. This significantly reduces the quality issues in cigarette production and has substantial economic value.

[0037] 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.

[0038] 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.

[0039] 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 differential conveying and rejection device based on machine vision, characterized in that, The single cigarette differential conveying rejection device is installed in the lower cigarette storage area of ​​the cigarette packaging machine. The single cigarette differential conveying rejection device includes a conveying module, a detection module, a blocking module and a rejection module. The conveying module includes a pre-blocking conveying sub-module and a post-blocking conveying sub-module. The detection module is located close to the pre-blocking conveying sub-module. The blocking module is located between the pre-blocking conveying sub-module and the post-blocking conveying sub-module. The rejection module is a rejection nozzle. The blocking module includes a differential lever unit, an angle control component that controls the progress of the differential lever unit, and a motor that drives the angle control component to move. After the differential lever moves to the blocking position, a delivery submodule is used to release the cigarettes. Before the differential lever unit moves to the blocking position, a delivery submodule is used to intercept the cigarettes for detection by the detection module.

2. The single cigarette differential conveying and rejection device based on machine vision according to claim 1, characterized in that, The differential unit includes several differential levers, which are arranged horizontally. The pre-interception conveying submodule includes several pre-interception conveying channels, and the post-interception conveying submodule includes several post-interception conveying channels. Each differential lever corresponds to a differential channel. Multiple cigarettes in each blocking front conveyor module are arranged, and the cigarettes in front are blocked or released through the differential lever.

3. The single cigarette differential conveying and rejection device based on machine vision according to claim 2, characterized in that, The conveying channel after the barrier is a downward channel, which is located behind the differential lever.

4. A single cigarette differential conveying and rejection device based on machine vision according to claim 2, characterized in that, Several pre-barrier conveying channels and several post-barrier conveying channels are divided into multiple groups in the horizontal direction; A partition is installed between the pre-interception conveying channel and the post-interception conveying channel of each group.

5. A single cigarette differential conveying and rejection device based on machine vision according to claim 1, characterized in that, The detection module detects the cigarettes in the blocking module within a fixed time period and outputs the detection results; The interception and conveying submodule will drop the normal cigarettes from the detection results output by the cigarette detection unit into the slide of the cigarette storage area; The rejection module removes empty cigarettes from the lower tobacco storage area based on the detection results output by the cigarette detection unit.

6. A single cigarette differential conveying and rejection device based on machine vision according to claim 1, characterized in that, The differential lever connects the encoder and the motor, and the motor controls the movement of the differential lever through the encoder.

7. A single cigarette differential conveying and rejection device based on machine vision according to claim 6, characterized in that, The detection module comprises multiple detection probes, which are arranged in parallel. The detection probe detects whether the cigarette on the interception module is a normal cigarette or an abnormal cigarette. The interception and conveying submodule includes an rejection conveying channel and a cigarette falling channel. The rejection conveying channel conveys abnormal cigarettes, while the cigarette falling channel conveys normal cigarettes.

8. A single cigarette differential conveying and rejection device based on machine vision according to claim 2, characterized in that, The differential lever is located above the guide rail, and the guide rail is located below the differential lever. The guide rail is connected to the eccentric wheel. The synchronous pulley on the eccentric wheel drives the encoder to move through the motor, and the encoder is connected to the motor.

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