CN116197141A - Method and device for removing wood shavings and foreign matters based on X-ray identification - Google Patents
Method and device for removing wood shavings and foreign matters based on X-ray identification Download PDFInfo
- Publication number
- CN116197141A CN116197141A CN202211704695.2A CN202211704695A CN116197141A CN 116197141 A CN116197141 A CN 116197141A CN 202211704695 A CN202211704695 A CN 202211704695A CN 116197141 A CN116197141 A CN 116197141A
- Authority
- CN
- China
- Prior art keywords
- detection
- ray
- foreign matter
- conveying assembly
- conveying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/3416—Sorting according to other particular properties according to radiation transmissivity, e.g. for light, x-rays, particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/38—Collecting or arranging articles in groups
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
The method for removing the wood shavings and the foreign matters based on the X-ray identification comprises the steps of completing the automatic identification and removal process by utilizing an X-ray identification and removal device, wherein the X-ray identification and removal device comprises a feed conveyor belt, a paving vibrating screen, a pre-detection conveyor belt, an X-ray shielding cover provided with X-ray equipment, a detection conveying assembly, a detection control module, a detection completion conveyor belt and a foreign matter box; the material sequentially passes through an incoming material conveying belt, a paving vibrating screen, a detection conveying belt and a detection conveying assembly; the method comprises the steps that wood shavings on a detection conveying assembly are scanned by using X-ray equipment, when the foreign matters reach the tail end of a conveyor belt of the detection conveying assembly, a detection control module controls a corresponding cylinder to retract, the height of the conveyor belt is reduced, the foreign matters are sent into a foreign matter box, and then the detection control module controls the cylinder to extend to lift the conveyor belt to the previous height; the detected shavings are conveyed to the next working procedure by the detection completion conveying belt. The application of the technology can fully detect, identify and remove sundries.
Description
Technical Field
The invention relates to the technical field of shaving board production, in particular to a method and a device for removing shaving foreign matters based on X-ray identification.
Background
The particle board is also called a particle board, and is manufactured by cutting various branches and buds, small-diameter wood, fast-growing wood, wood dust and the like into fragments with a certain specification, drying, mixing with sizing materials, hardening agents, waterproofing agents and the like, and pressing at a certain temperature and under a certain pressure. In the production process of the shaving board, the collected wooden crushed aggregates are required to be converted into shavings, and in the process of collecting and manufacturing shavings, extra-large or overweight sundries such as stones, bricks, iron blocks and the like with larger mass are added frequently, so that the subsequent processing of the shaving board is influenced, and in order to ensure the quality of the shaving board, the shavings are required to be screened, and the shavings meeting the requirements are processed and used.
The traditional mode that adopts artifical detection to reject impurity such as too big and metal, stone that contain in the wood shavings adopts artifical detection to reject impurity in the wood shavings, but because the composition of impurity in the wood shavings and the position of impurity all change along with the difference of wood shavings production process, lead to impurity's rejection efficiency lower.
With the progress of the process technology, the means of wind power sorting impurity removal, blowing impurity removal and the like are adopted to replace manual detection impurity removal, but the problems of dust pollution and the like are easy to generate due to wind power sorting impurity removal and blowing impurity removal, so that the environmental deterioration is aggravated, and the requirements are difficult to meet. Therefore, there is a need to design a technology capable of avoiding dust pollution to the environment and removing foreign matters.
Disclosure of Invention
The invention aims to provide a method and a device for removing foreign matters from wood shavings based on X-ray identification, and the application of the technology can sufficiently and effectively separate various oversized materials and sundries to obtain pure wood shavings, so that the utilization rate of the materials is improved.
In order to achieve the purpose of the invention, the technical scheme adopted is as follows:
the method for removing the wood shavings foreign matter based on the X-ray identification is characterized by comprising the following steps of: the method comprises the following steps:
1) The X-ray identification and removal device is arranged, and comprises a feed conveying belt, a paving vibrating screen, a conveying belt before detection, an X-ray shielding cover provided with X-ray equipment, a detection conveying assembly, a detection control module, a detection completion conveying belt and a foreign matter box.
2) The shavings are evenly spread on the spreading vibrating screen through the feeding conveyor belt, and then conveyed forwards through the detection conveyor belt.
3) The shavings enter the X-ray shielding cover through the lead curtain at the inlet side and then are conveyed to the detection conveying assembly; the purpose of the lead curtain is to prevent the X-rays from leaking outwards.
4) The X-ray equipment in the X-ray shielding cover scans the shavings to obtain the position of the foreign matters, and sends the information of the foreign matters to the encoder of the detection control module, the encoder tracks and positions the foreign matters on the moving detection conveying assembly in real time, and converts the shape and the position of the positioned foreign matters into position signals, and the position signals are fed back to the grasping device of the cylinder of the detection conveying assembly, and the grasping device sends the information to the detection control module.
5) The detection control module correspondingly controls the air cylinders of the corresponding conveyor belts to conduct telescopic movement according to the positions of the conveyor belts of the detection conveying assembly where the foreign matters are located, when the foreign matters reach the tail ends of the conveyor belts, the air cylinders are controlled to retract and move to reduce the heights of the conveyor belts, at the moment, the conveyor belts continuously rotate forwards, so that the foreign matters are directly conveyed into the foreign matter box, after the foreign matters completely enter the foreign matter box, the detection control module controls the air cylinders to stretch out and move, the descending conveyor belts are lifted to the previous heights, the conveyor belts of the detection conveying assembly are kept at the same height, and the recognition and elimination of the foreign matters are completed.
6) The shavings after detection pass through the lead curtain at the outlet side, and the detected conveyer belt is sent to the next working procedure, and the lead curtain at the outlet side can prevent X-rays from leaking outwards.
The installation relation of the X-ray identification and removal device is as follows: the paving vibrating screen is positioned between the feeding conveyor belt and the detection front conveyor belt, the paving vibrating screen can adopt a common vibrating screen, a baffle plate is covered on the vibrating screen, the detection conveying assembly is positioned between the detection front conveyor belt and the detection completion conveyor belt, the X-ray equipment is arranged above the inner side of the X-ray shielding cover, and the detection conveying assembly is positioned below the X-ray equipment, so that the X-ray equipment detects the shape and the position of the foreign matters on the detection conveying assembly and converts the shape and the position of the foreign matters into foreign matters signals; the foreign matter box is arranged below the X-ray shielding cover and below the detection conveying assembly and the detection completion conveying belt; the detection control module is connected with the detection conveying assembly and the X-ray equipment by adopting a wire or wireless signal. The X-ray device comprises an emitter and a receiver, wherein the emitter is used for emitting X-rays to the detection channel; an X-ray receiver arranged opposite to the X-ray emitter for receiving X-rays; the X-ray equipment scans the wood shavings, acquires the position of the foreign matter, sends the information (conveying speed, position, size, shape and the like) of the foreign matter to the encoder, converts the shape and the position of the positioned foreign matter into position signals, feeds the position signals back to the detection control module, correspondingly controls the telescopic movement of the cylinder corresponding to the conveyor belt according to the position of the conveyor belt where the foreign matter is located, and when the foreign matter reaches the tail end of the conveyor belt, indicates the retraction movement of the cylinder, reduces the height of the conveyor belt, at the moment, the conveyor belt continuously rotates forwards, so that the foreign matter is directly sent into a foreign matter box, and the recognition and elimination of the foreign matter are completed.
The detection control module comprises a display panel and an encoder, the detection control module is used for receiving foreign matter signals of the X-ray equipment and sending the foreign matter signals to the encoder, when the X-ray equipment detects the foreign matter, the encoder starts recording the length and sends the length information to a holding device of the air cylinder, so that the encoder can track and position the foreign matter on the moving detection conveying assembly in real time, and convert the shape and the position of the positioned foreign matter into position signals and feed the position signals back to the detection control module, and the detection control module controls the detection conveying assembly to convey the foreign matter into the foreign matter box according to the position signals, thereby completing foreign matter detection and rejection.
The working principle of the X-ray equipment is as follows:
(1) the conveyor belt of the inspection conveyor assembly is approximately considered to be a uniform medium, and when no material is entering, the gray image matrix obtained by the conveyor belt via the linear array X-ray detector is set to F 0 （m，n）；
Calculate matrix F 0 The average value of each gray value in (m, n) is denoted as f 0 ；
(2) When material is fed in, the new gray image matrix obtained by the linear array X-ray detector is set as F 1 （m，n）；
Gray scale matrix F 1 Each element in (m, n) and F 0 Subtracting the average value of each gray value in (m, n);
the calculated gray image matrix is marked as F 2 （m，n）；
(3) Calculation F 2 （m，n) the maximum and minimum values of the elements in the matrix are respectively noted as: a, a max And a min Using a max And a min Matrix F 2 (m, n) performing normalization treatment;
matrix F 2 The matrix after normalization treatment of (m, n) is marked as F 3 （m，n）；
(4) F using a gaussian filter check normalization matrix of σ=13×3 3 (m, n) performing filtering processing to reduce noise influence in the image acquisition process;
sigma=13×3 gaussian filter kernel:
matrix F 3 The (m, n) filter processing calculation method is as follows:
matrix F 3 The matrix after the (m, n) filtering process is marked as F 4 （m，n）；
(5) Matrix F 4 The value in (m, n) is mapped to the value interval of the gray image, and the value interval of the mapped gray image is set as [ x, y ]]Wherein, the method comprises the steps of, wherein,
，/>
the calculation method of the mapping process comprises the following steps:
the mapped matrix is denoted as F 5 (m, n) for use in subsequent automatic identification of foreign matter.
Further preferred is: the detection conveying assembly consists of three conveying belts which are arranged in parallel, each conveying belt is provided with a driving roller, a driven roller, a main motor and an air cylinder, the driving rollers are driven by the driving rollers and the driven rollers, the main motor drives the driving rollers to rotate, the air cylinder controls the conveying belts to lift, the conveying belts are arranged and tensioned on the driving shafts and the driven shafts, the driven rollers are arranged at the input ends of the conveying belts, and the driving rollers are arranged at the output ends of the conveying belts; the main motor drives the driving roller to rotate, so that the conveying belt is driven to rotate, and shavings are conveyed; when the foreign matter reaches the tail end position of the conveying belt, the detection control module indicates the cylinder to retract, the bracket driving the conveying belt retracts to move to a fixed position, the conveying belt is driven to wholly descend, and the foreign matter can be conveyed into the foreign matter box while the conveying belt descends.
Further preferred is: the conveying speed of the conveyor belt of the detection conveying assembly is set according to the efficiency of the X-ray equipment, and the conveying speed is smaller than or equal to 90m/min.
Further preferred is: the scanning range of the X-ray equipment covers the whole width direction of the detection conveying assembly, the maximum of an X-ray light source is 80kv, the maximum of the X-ray light source is 2.5mA, the focal point is 0.5mm, the fan beam emits light, the light emitting angle is larger than 60 degrees, the light is continuously emitted, the self-shielding is realized, and the air cooling and the heat dissipation are realized.
Further preferred is: the X-ray equipment comprises a line scanning X-ray detector, a pixel size of 0.8mm, an imaging width of 1000mm, a gigabit network interface and a dustproof design.
Further preferred is: the scanning speed of the X-ray device is less than or equal to 1.5m/s, the integration time is 533us, the line frequency is 1875, and the preferential rate is 1.0m/s.
The clean degree requirement of the shaving board production line on the environment is higher, and the traditional removing method adopts the means of wind power sorting impurity removal, blowing impurity removal and the like, so that the removing method cannot avoid the problems of dust pollution and the like. The foreign matter in the wood shavings is automatically detected and removed, so that the problems encountered above are effectively solved, and the beneficial effects are that: 1. by adopting the technical route of X-ray detection and removing foreign matters by a mechanical executing mechanism, the problems of environment pollution and the like caused by dust generated by the processes of wind power sorting, impurity removal, blowing and removing and the like on a production line are avoided. 2. Under the condition of guaranteeing the cleanliness of the production site, the separation and elimination of metal and stone in the tobacco stems are realized, and the purity of the sheet line tobacco stems is improved. 3. The risk that hard foreign matters enter the pulping equipment and damage the pulping equipment is reduced, the working efficiency of the production line is improved, and the production cost is reduced.
Drawings
FIG. 1 is a schematic view of an arrangement of an X-ray identification and removal apparatus;
FIG. 2 is a schematic view of the structure of the inside of an X-ray shield;
FIG. 3 is a schematic diagram of the structure of the detection and delivery assembly;
FIG. 4 is a schematic diagram of a configuration for detecting a partial drop-down transfer of a transport assembly;
the names corresponding to the serial numbers in the figures are:
1. the device comprises a feeding conveyer belt, 2 parts of a paving vibrating screen, 3 parts of a detection conveyer belt, 4 parts of an X-ray shielding cover, 5 parts of X-ray equipment, 6 parts of a detection conveying assembly, 7 parts of a detection control module, 8 parts of a detection completion conveyer belt, 9 parts of a foreign matter box, 61 parts of a driving roller, 62 parts of a driven roller, 63 parts of an air cylinder, 71 parts of a display panel, 72 parts of an encoder.
Detailed Description
In order to make the technical scheme and advantages of the present application more clear, the technical scheme is clearly and completely described below with reference to the embodiments.
Example 1
The shaving foreign matter elimination based on X-ray identification can be completed by adopting the following steps:
1) The X-ray identification and removal device is arranged and comprises an incoming material conveying belt 1, a paving vibrating screen 2, a conveying belt 3 before detection, an X-ray shielding cover 4 provided with X-ray equipment 5, a detection conveying assembly 6, a detection control module 7, a detection completion conveying belt 8 and a foreign matter box 9. The paving vibrating screen 2 is positioned between the incoming material conveying belt 1 and the pre-detection conveying belt 3, the detection conveying assembly 6 is positioned between the pre-detection conveying belt 3 and the detection completion conveying belt 8, the X-ray equipment 5 is arranged above the inner side of the X-ray shielding cover 4, and the detection conveying assembly 6 is positioned below the X-ray equipment 5, so that the X-ray equipment 5 detects the shape, the size and the position of the foreign matters on the detection conveying assembly 6 and converts the shape, the size and the position of the foreign matters into foreign matter signals; a foreign matter box 9 is provided below the X-ray shielding cover 4 and below between the detection conveying assembly 6 and the detection completion conveying belt 8; the detection control module 7 is connected with the detection conveying assembly 6 and the X-ray equipment 5 by adopting a wire or a wireless signal.
The detection control module 7 comprises a display panel 71 and an encoder 72, the detection control module 7 is used for receiving a foreign matter signal of the X-ray device 5 and sending the foreign matter signal to the encoder 72, when the X-ray device 5 detects the foreign matter, the encoder starts to record the length and sends the length information to the grasping device of the air cylinder 63, so that the encoder 72 can track and position the foreign matter on the moving detection conveying assembly 6 in real time, and convert the shape and the position of the positioned foreign matter into a position signal and feed the position signal back to the detection control module 7, and the detection control module 7 controls the detection conveying assembly 6 to convey the foreign matter into the foreign matter box 9 according to the position signal, thereby completing the detection and rejection of the foreign matter. The detection conveying assembly 6 consists of three conveying belts which are arranged in parallel, each conveying belt is provided with a driving roller 61, a driven roller 62, a main motor for driving the driving roller to rotate and a cylinder for controlling the conveying belt to lift, the conveying belts are arranged and tensioned on the driving shaft 61 and the driven shaft 62, the driven roller 62 is arranged at the input end of the conveying belt, and the driving roller 61 is arranged at the output end of the conveying belt; the main motor drives the driving roller 61 to rotate, so that the conveyor belt is driven to rotate, and the shavings are conveyed.
2) The shavings are evenly paved on the paving vibrating screen 2 through the feeding conveyor belt 1, and then conveyed forwards through the detection conveyor belt 3.
3) The shavings enter the X-ray shield 4 through an inlet side lead curtain and are then transported to a detection conveyor assembly 6.
4) The X-ray equipment 5 in the X-ray shielding cover 4 scans the shavings to obtain the positions of the foreign matters, and sends the information of the foreign matters to the encoder 72 of the detection control module 7, the encoder 72 tracks and positions the foreign matters on the moving detection conveying assembly 6 in real time, converts the shape and the positions of the positioned foreign matters into position signals, and feeds back the position signals to the grasping device of the air cylinder 63 of the detection conveying assembly 6, and the grasping device sends the information to the detection control module 7;
5) The detection control module 7 correspondingly controls the air cylinders 63 corresponding to the conveyor belts to stretch according to the positions of the conveyor belts of the detection conveying assembly 6 where the foreign matters are located, when the foreign matters reach the tail ends of the conveyor belts, the air cylinders 63 are controlled to retract to move to reduce the heights of the conveyor belts, at the moment, the conveyor belts continuously rotate forwards, so that the foreign matters are directly conveyed into the foreign matter box 9, after the foreign matters completely enter the foreign matter box 9, the detection control module 7 controls the air cylinders 63 to stretch to move to lift the descending conveyor belts to the previous heights, and the conveyor belts of the detection conveying assembly 6 are kept at the same heights, so that the recognition and elimination of the foreign matters are completed;
6) The detected shavings pass through the lead curtain at the outlet side and are sent to the next working procedure by the detection completion conveying belt 8.
The conveyor belt of the detection conveying assembly 6 is set to be at a conveying speed according to the efficiency of the X-ray equipment 5, and the conveying speed is smaller than or equal to 90m/min. The scanning range of the X-ray equipment 5 covers the whole width direction of the detection conveying assembly 6, the maximum of an X-ray light source is 80kv, the maximum of the X-ray light source is 2.5mA, the focal point is 0.5mm, the fan beam emits light, the light emitting angle is larger than 60 degrees, the light is continuously emitted, the self-shielding is realized, and the air cooling and the heat dissipation are realized. The X-ray detector is a line scanning X-ray detector in X-ray equipment 5, the pixel size is 0.8mm, the imaging width is 1000mm, and the gigabit network interface and the dustproof design are adopted. The scanning speed of the X-ray device 5 is less than or equal to 1.5m/s, the integration time is 533us, and the line frequency is 1875, preferably 1.0m/s.
The working principle of the X-ray equipment 5 is as follows:
(1) the conveyor belt of the inspection conveyor assembly is approximately considered to be a uniform medium, and when no material is entering, the gray image matrix obtained by the conveyor belt via the linear array X-ray detector is set to F 0 （m，n）；
Calculate matrix F 0 The average value of each gray value in (m, n) is denoted as f 0 ；
(2) When material is fed in, the new gray image matrix obtained by the linear array X-ray detector is set as F 1 （m，n）；
Gray scale matrix F 1 Each element in (m, n) and F 0 Subtracting the average value of each gray value in (m, n);
the calculated gray image matrix is marked as F 2 （m，n）；
(3) Calculation F 2 The maximum and minimum values of the elements in the (m, n) matrix are respectively noted as: a, a max And a min Using a max And a min Matrix F 2 (m, n) performing normalization treatment;
matrix F 2 The matrix after normalization treatment of (m, n) is marked as F 3 （m，n）；
(4) By usingSigma=13×3 gaussian filter check normalization matrix F 3 (m, n) performing filtering processing to reduce noise influence in the image acquisition process;
sigma=13×3 gaussian filter kernel:
matrix F 3 The (m, n) filter processing calculation method is as follows:
matrix F 3 The matrix after the (m, n) filtering process is marked as F 4 （m，n）；
(5) Matrix F 4 The value in (m, n) is mapped to the value interval of the gray image, and the value interval of the mapped gray image is set as [ x, y ]]Wherein, the method comprises the steps of, wherein,
，/>
the calculation method of the mapping process comprises the following steps:
the mapped matrix is denoted as F 5 (m, n) for use in subsequent automatic identification of foreign matter.
Application examples
The foreign matter in the shavings is identified and removed by the Guangxi plate industry limited company by utilizing the technology, the automatic identification and removal rate of the foreign matter reaches more than 99 percent, and dust is hardly generated in the foreign matter identification and removal process.
The above description is not intended to limit the present application to the particular embodiments disclosed, but is not intended to limit the scope of the present application to such modifications, adaptations, additions or substitutions as would be within the spirit and scope of the present application.
Claims (9)
1. The method for removing the wood shavings foreign matter based on the X-ray identification is characterized by comprising the following steps of: the method comprises the following steps:
the X-ray identification and removal device is arranged and comprises a feed conveying belt (1), a paving vibrating screen (2), a conveying belt (3) before detection, an X-ray shielding cover (4) provided with X-ray equipment (5), a detection conveying assembly (6), a detection control module (7), a detection completion conveying belt (8) and a foreign matter box (9);
2) Spreading the shavings evenly on a spreading vibrating screen (2) through a feeding conveyer belt (1), and then conveying the shavings forwards through a detection conveyer belt (3);
3) The shavings enter the X-ray shielding cover (4) through the lead curtain at the inlet side and then are conveyed to the detection conveying assembly (6);
4) The X-ray equipment (5) in the X-ray shielding cover (4) scans the shavings to obtain the positions of the foreign matters, and sends the information of the foreign matters to the encoder (72) of the detection control module (7), the encoder (72) tracks and positions the foreign matters on the moving detection conveying assembly (6) in real time, and converts the shape and the positions of the positioned foreign matters into position signals, and the position signals are fed back to the grasping device of the air cylinder (63) of the detection conveying assembly (6), and the grasping device sends the information to the detection control module (7);
5) The detection control module (7) correspondingly controls the air cylinders (63) corresponding to the conveyor belts to perform telescopic movement according to the positions of the conveyor belts of the detection conveying assembly (6) where the foreign matters are located, when the foreign matters reach the tail ends of the conveyor belts, the air cylinders (63) are controlled to retract to move so as to reduce the height of the conveyor belts, at the moment, the conveyor belts continuously rotate forwards, so that the foreign matters are directly conveyed into the foreign matter box (9), after the foreign matters completely enter the foreign matter box (9), the detection control module (7) controls the air cylinders (63) to extend to move so as to lift the descending conveyor belts to the previous height, and the conveyor belts of the detection conveying assembly (6) are kept at the same height so as to finish foreign matters identification and rejection;
6) The detected shavings pass through the lead curtain at the outlet side and are sent to the next working procedure by the detected conveying belt (8).
2. The method for removing and rejecting wood shavings based on X-ray identification of claim 1, wherein: the installation relation of the X-ray identification and removal device is as follows: the paving vibrating screen (2) is positioned between the incoming material conveying belt (1) and the detection front conveying belt (3), the detection conveying assembly (6) is positioned between the detection front conveying belt (3) and the detection completion conveying belt (8), the X-ray device (5) is arranged above the inner side of the X-ray shielding cover (4), and the detection conveying assembly (6) is positioned below the X-ray device (5) so that the X-ray device (5) detects the shape and the position of the foreign matters on the detection conveying assembly (6) and converts the shape and the position into foreign matters signals; a foreign matter box (9) is arranged below the X-ray shielding cover (4) and below the detection conveying assembly (6) and the detection completion conveying belt (8); the detection control module (7) is connected with the detection conveying assembly (6) and the X-ray equipment (5) by adopting a wire or a wireless signal.
3. Method for the removal and the identification of wood shavings based on X-rays according to claim 1 or 2, characterized in that: the detection control module (7) comprises a display panel (71) and an encoder (72), the detection control module (7) is used for receiving a foreign matter signal of the X-ray equipment (5) and sending the foreign matter signal to the encoder (72), when the X-ray equipment (5) detects the foreign matter, the encoder starts to record the length and sends the length information to the grasping device of the air cylinder (63), so that the encoder (72) can track and position the foreign matter on the moving detection conveying assembly (6) in real time, and convert the shape and the position of the positioned foreign matter into a position signal and feed the position signal back to the detection control module (7), and therefore the detection control module (7) controls the detection conveying assembly (6) to convey the foreign matter into the foreign matter box (9) according to the position signal, and foreign matter detection and rejection are completed.
4. Method for the removal and the identification of wood shavings based on X-rays according to claim 1 or 2, characterized in that: the working principle of the X-ray equipment (5) is as follows:
(1) the conveyor belt of the inspection conveyor assembly is approximately considered to be a uniform medium, and when no material is entering, the gray image matrix obtained by the conveyor belt via the linear array X-ray detector is set to F 0 （m，n）；
Calculate matrix F 0 The average value of each gray value in (m, n) is denoted as f 0 ；
(2) When material is fed in, the new gray image matrix obtained by the linear array X-ray detector is set as F 1 （m，n）；
Gray scale matrix F 1 Each element in (m, n) and F 0 Subtracting the average value of each gray value in (m, n);
the calculated gray image matrix is marked as F 2 （m，n）；
(3) Calculation F 2 The maximum and minimum values of the elements in the (m, n) matrix are respectively noted as: a, a max And a min Using a max And a min Matrix F 2 (m, n) performing normalization treatment;
matrix F 2 The matrix after normalization treatment of (m, n) is marked as F 3 （m，n）；
(4) F using a gaussian filter check normalization matrix of σ=13×3 3 (m, n) performing filtering processing to reduce noise influence in the image acquisition process;
sigma=13×3 gaussian filter kernel:
matrix F 3 The (m, n) filter processing calculation method is as follows:
matrix F 3 The matrix after the (m, n) filtering process is marked as F 4 （m，n）；
(5) Matrix F 4 The value in (m, n) is mapped to the value interval of the gray image, and the value interval of the mapped gray image is set as [ x, y ]]Wherein, the method comprises the steps of, wherein,
，/>
the calculation method of the mapping process comprises the following steps: />
The mapped matrix is denoted as F 5 (m, n) for use in subsequent automatic identification of foreign matter.
5. The method for removing and rejecting wood shavings based on X-ray identification of claim 1, wherein: the detection conveying assembly (6) consists of three conveying belts which are arranged in parallel, each conveying belt is provided with a driving roller (61), a driven roller (62), a main motor for driving the driving roller to rotate and an air cylinder for controlling the conveying belt to lift, the conveying belts are arranged and tensioned on the driving shaft (61) and the driven shaft (62), the driven roller (62) is arranged at the input end of the conveying belt, and the driving roller (61) is arranged at the output end of the conveying belt; the main motor drives the driving roller 61 to rotate, so that the conveyor belt is driven to rotate, and the shavings are conveyed.
6. The method for removing and rejecting wood shavings based on X-ray identification of claim 5, wherein: the conveying speed of the conveyor belt of the detection conveying assembly (6) is set according to the efficiency of the X-ray equipment (5), and the conveying speed is smaller than or equal to 90m/min.
7. The method for removing and rejecting wood shavings based on X-ray identification of claim 1, wherein: the scanning range of the X-ray equipment (5) covers the whole width direction of the detection conveying assembly (6), the X-ray source is 80kv at maximum, 2.5mA, the focal point is 0.5mm, the fan beam emits light, the light emitting angle is larger than 60 degrees, the light is continuously emitted, the self-shielding is realized, and the air cooling and the heat dissipation are realized.
8. The method for removing and rejecting wood shavings based on X-ray identification of claim 1, wherein: the X-ray detector is a line scanning X-ray detector in X-ray equipment (5), the pixel size is 0.8mm, the imaging width is 1000mm, the gigabit network interface is provided, and the design is dustproof.
9. The method for removing and rejecting wood shavings based on X-ray identification of claim 1, wherein: the scanning speed of the X-ray device (5) is less than or equal to 1.5m/s, the integration time is 533us, the line frequency is 1875, and the preferential rate is 1.0m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211704695.2A CN116197141A (en) | 2022-12-29 | 2022-12-29 | Method and device for removing wood shavings and foreign matters based on X-ray identification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211704695.2A CN116197141A (en) | 2022-12-29 | 2022-12-29 | Method and device for removing wood shavings and foreign matters based on X-ray identification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116197141A true CN116197141A (en) | 2023-06-02 |
Family
ID=86515345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211704695.2A Pending CN116197141A (en) | 2022-12-29 | 2022-12-29 | Method and device for removing wood shavings and foreign matters based on X-ray identification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116197141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118002509A (en) * | 2024-04-08 | 2024-05-10 | 福建武夷烟叶有限公司 | Non-smoke substance removing device based on X-ray perspective imaging |
-
2022
- 2022-12-29 CN CN202211704695.2A patent/CN116197141A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118002509A (en) * | 2024-04-08 | 2024-05-10 | 福建武夷烟叶有限公司 | Non-smoke substance removing device based on X-ray perspective imaging |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103639121B (en) | The automatic separation equipment of red date elephant skin | |
| CN116197141A (en) | Method and device for removing wood shavings and foreign matters based on X-ray identification | |
| CN110785242B (en) | Machine and method for separating wood material from other materials | |
| CN107185858B (en) | Fruit detection and classification system and method | |
| CN111530773A (en) | Plate screening system and plate screening method thereof | |
| CN106965976A (en) | A kind of rice packaging conveying device | |
| CN212397333U (en) | Panel screening system | |
| CN219378063U (en) | Crushed aggregates detects removing devices and sorting system | |
| CN110394307B (en) | Tobacco leaf automated inspection letter sorting system | |
| CN207593994U (en) | A kind of automatically scanning cutting optimization sorting device | |
| CN208613093U (en) | A kind of mandarin orange class fruit color sorting grading plant | |
| CN208743094U (en) | Jujube defect intelligent classification separation system | |
| CN112275661A (en) | Intelligent machine fresh tea leaf picking grader | |
| CN106694388A (en) | Novel diffusion plate full-automatic detection machine | |
| CN116423573A (en) | Rock wool board production line | |
| CN217250813U (en) | Visual detection device for surface defects of bearing | |
| CN107716347A (en) | A kind of sheet material faulty materials sorting equipment | |
| CN211307563U (en) | Waste collecting device of printing, slotting and die-cutting machine | |
| CN210936013U (en) | Carousel formula veneer grading plant | |
| CN218695059U (en) | Laser cutting device | |
| CN216036828U (en) | Assembly line for machining steel structure with high continuity | |
| CN219541020U (en) | Agricultural product sorting equipment with aspergillus flavus detection function | |
| CN217725025U (en) | Compound fertilizer environmental protection dust collector | |
| CN107790391A (en) | Steel ball category filter device | |
| CN217830857U (en) | Material sorting and conveying equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |