CN111468427A - Sawn timber grading equipment and grading method - Google Patents
Sawn timber grading equipment and grading method Download PDFInfo
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- CN111468427A CN111468427A CN202010248641.4A CN202010248641A CN111468427A CN 111468427 A CN111468427 A CN 111468427A CN 202010248641 A CN202010248641 A CN 202010248641A CN 111468427 A CN111468427 A CN 111468427A
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- 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
Abstract
The invention discloses a sawn timber grading device and a grading method, wherein the grading device comprises: a conveying device for conveying sawn timber; the visual detection device is used for acquiring image information of the outer surface of the sawn timber on the conveying device; the X-ray detection device is used for acquiring the structural information inside the sawn timber on the conveying device; the stress detection device is used for detecting the elastic modulus and the mechanical property of the sawn timber on the conveying device; the code spraying equipment is used for spraying code marks on the sawn timber on the conveying device; the computer control system, the visual detection device, the X-ray detection device, the stress detection device and the code spraying equipment are connected with the computer control system in a communication mode. According to the arrangement, on one hand, the surface defects of the sawn timber can be detected, the internal defects of the sawn timber and the mechanical property of the sawn timber can be detected, on the other hand, all detection processes are orderly connected in series through the conveying device, uninterrupted detection among all the processes is carried out, and therefore the efficiency of detecting and grading the sawn timber can be improved.
Description
Technical Field
The invention relates to the technical field of wood structure processing, in particular to sawn timber grading equipment and a grading method.
Background
The sawn timber is a standard timber processed by setting the width and the height of the section of the sawn timber according to the design requirement of the wood structure building, and the mechanical property of the sawn timber directly influences the safety and the quality of the assembled wood structure building. The sawn timber after grading can be directly applied to components such as light trusses, walls and the like, can also be processed into components such as laminated wood (laminated wood) and orthogonal laminated wood with larger specification and size by combining the same grade or different grades, and can be applied to building structures with different stress forms such as heavy beams and columns.
In the prior art, two methods mainly comprise visual grading and mechanical grading, wherein the visual grading is a mode of observing the appearance of the sawn timber by naked eyes, and the sawn timber is graded according to the surface defects of the sawn timber. Mechanical grading is to use mechanical equipment to perform nondestructive test on sawn timber, and the sawn timber grade is determined according to the measured bending strength and elastic modulus of the sawn timber. However, in both of these methods, defects such as decay and voids inside the sawn timber cannot be detected, and when the above method is used to divide the sawn timber into equal parts, the two steps are not always continuous, resulting in low efficiency in dividing the sawn timber into equal parts. Therefore, a need exists for a solution to the problems of the prior art that the internal defects of the sawn timber cannot be detected by the sawn timber classification method and the detection efficiency is low.
Disclosure of Invention
In order to solve the technical problems, the invention provides equipment and a method for continuously detecting sawn timber grade and the like, which can detect surface defects and internal defects of sawn timber.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a sawn timber dividing device, which comprises: a conveying device for conveying sawn timber; the visual detection device is used for acquiring image information of the outer surface of the sawn timber on the conveying device; the X-ray detection device is used for acquiring the structural information inside the sawn timber on the conveying device; the stress detection device is used for detecting the elastic modulus and the mechanical property of the sawn timber on the conveying device; the code spraying equipment is used for spraying code marks on the sawn timber on the conveying device; the visual detection device, the X-ray detection device, the stress detection device and the code spraying equipment are respectively connected with the computer control system in a communication mode through leads so as to transmit information acquired by the visual detection device, the X-ray detection device and the stress detection device to the computer control system.
Further, the conveying device comprises a first conveying mechanism, a second conveying mechanism, a third conveying mechanism and a fourth conveying mechanism which are consistent in conveying direction, the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism are sequentially arranged end to end, gaps are formed between every two adjacent conveying mechanisms, the visual detection device is arranged between the first conveying mechanism and the second conveying mechanism, the X-ray detection device is arranged between the second conveying mechanism and the third conveying mechanism, the stress detection device is arranged between the third conveying mechanism and the fourth conveying mechanism, and the code spraying equipment is arranged on the fourth conveying mechanism.
Further, the visual inspection device comprises a first camera, a first light source, a second camera and a second light source, wherein the first camera is arranged above the conveying surface of the conveying device to shoot the upper side of the sawn timber, the first light source is used for irradiating the upper side of the sawn timber to illuminate the sawn timber portion, the second camera is arranged below the conveying surface of the conveying device to shoot the lower side of the sawn timber, and the second light source is used for irradiating the lower side of the sawn timber to illuminate the sawn timber portion.
Further, the X-ray detection device comprises an X-ray emitter and an X-ray receiver, the X-ray emitter is arranged above the conveying surface of the conveying device, and the X-ray receiver is arranged below the conveying surface of the conveying device so as to detect internal defects of the sawn timber passing between the X-ray emitter and the X-ray receiver.
Further, the conveying directions of the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism are consistent, so that the sawn timber sequentially passes through the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism, the sawn timber grading equipment further comprises a moisture content detection device for detecting the moisture content of the sawn timber, and the moisture content detection device is arranged on the first conveying mechanism and is communicably connected with the computer control system through a wire.
Further, the automatic sawing machine further comprises a weighing sensor used for detecting the weight of the sawn timber, the weighing sensor is arranged on the first conveying mechanism so as to detect the weight of the sawn timber on the first conveying mechanism, and the weighing sensor is connected with the computer control system in a communication mode through a lead.
The invention also provides a method for dividing sawn timber into different grades by utilizing sawn timber dividing equipment, wherein the sawn timber dividing equipment is the sawn timber dividing equipment, and the method comprises the following steps: detecting the moisture content, detecting the moisture content of the sawn timber on the first conveying mechanism through the moisture content detecting device, and transmitting the detected moisture content data to the computer control system; weighing, namely acquiring the weight of the sawn timber on the first conveying mechanism through a weighing sensor after detecting the water content, and transmitting the detected weight data to the computer control system; analyzing surface defects, namely respectively acquiring images of the surface of the sawn timber through a first camera and a second camera after weighing, transmitting the acquired images to the computer control system, analyzing the acquired images by the computer control system, performing the next detection procedure if the sawn timber meets the standard, and directly conveying the sawn timber to the code spraying equipment if the sawn timber does not meet the standard to spray unqualified character samples; the method comprises the following steps of analyzing internal defects, detecting the interior of a sawn timber through the X-ray detection device after surface defects are analyzed, transmitting X-rays by the X-ray transmitter, enabling the X-rays to penetrate through the sawn timber and be received by the X-ray receiver, transmitting received images to the computer control system by the X-ray receiver, analyzing whether the sawn timber meets structural requirements or not by the computer control system, carrying out the next detection procedure if the sawn timber meets the structural requirements, and directly conveying the sawn timber to code spraying equipment if the interior of the sawn timber does not meet the structural requirements to spray unqualified character samples; and mechanical property detection, after internal defect analysis, performing mechanical property detection on the sawn timber through a stress detection device, transmitting a detection result to the computer control system to judge whether the sawn timber meets the requirement of the mechanical property, if the sawn timber does not meet the requirement of the mechanical property, transmitting the sawn timber to the code spraying device to spray unqualified character patterns, if the target sawn timber meets the requirement of the mechanical property, determining the grade of the sawn timber by combining the detection result of the visual detection device, the detection result of the X-ray detection device and the detection result of the stress detection device, and spraying corresponding grade marks by the code spraying device.
Compared with the prior art, the invention has the following technical effects:
the invention relates to a sawn timber grading device, which comprises: a conveying device for conveying sawn timber; the visual detection device is used for acquiring image information of the outer surface of the sawn timber on the conveying device; the X-ray detection device is used for acquiring the structural information inside the sawn timber on the conveying device; the stress detection device is used for detecting the elastic modulus and the mechanical property of the sawn timber on the conveying device; the code spraying equipment is used for spraying code marks on the sawn timber on the conveying device; the computer control system, the visual detection device, the X-ray detection device, the stress detection device and the code spraying equipment are respectively connected with the computer control system in a communication mode through leads so as to transmit information acquired by the visual detection device, the X-ray detection device and the stress detection device to the computer control system.
In the process of conveying sawn timber through the conveying device, the defects on the surface of the sawn timber can be detected by the visual detection device, the internal defects of the sawn timber are detected by the X-ray detection device, the elastic modulus and the mechanical property of the sawn timber are detected by the stress detection device, whether the sawn timber meets the standard and what grade the sawn timber can reach is analyzed by the computer control system, and the sawn timber is marked and classified by the code spraying equipment. According to the arrangement, on one hand, the surface defects of the sawn timber can be detected, the internal defects of the sawn timber and the mechanical property of the sawn timber can be detected, on the other hand, all detection processes are orderly connected in series through the conveying device, uninterrupted detection among all the processes is carried out, and therefore the efficiency of detecting and grading the sawn timber can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a sawing device according to an embodiment of the present invention.
Description of reference numerals: 1. a computer control system; 2. a moisture content detection device; 3. a first camera; 4. a first light source; 5. sawing the wood; 6. a stress detection device; 7. code spraying equipment; 8. a motor; 9. a weighing sensor; 10. an X-ray emitter; 11. an X-ray receiver; 12. a second camera; 13. a second light source; 14. a first conveying mechanism; 15. a second conveying mechanism; 16. a third conveying mechanism; 17. and a fourth conveying mechanism.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide equipment and a method for continuously detecting sawn timber and the like, which can detect surface defects and internal defects of sawn timber.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, the sawn timber grading equipment provided by the embodiment of the present invention includes a conveying device, a visual detection device, an X-ray detection device, a stress detection device 6, a code spraying device 7, and a computer control system 1. The conveying device is used for conveying the sawn timber 5, and an existing sawn timber 5 conveying unit can be adopted. The visual detection device is used for acquiring image information of the surface of the sawn timber 5 on the conveying device, and the visual detection device is connected with the computer control system 1 in a communication mode through a lead so as to convey the acquired image information of the surface of the sawn timber 5 to the computer control system 1 for analysis. The X-ray detection device is used for detecting the defects inside the sawn timber 5 on the conveying device, and the X-ray detection device is connected with the computer control system 1 in a communication mode through a conducting wire so as to convey the acquired images of the internal structure of the sawn timber 5 to the computer control system 1 for analysis. The stress detection device 6 is used for detecting the elastic modulus and the mechanical property of the sawn timber 5 on the conveying device, and the stress detection device 6 is communicably connected with the computer control system 1 through a lead so as to transmit the elastic modulus and the mechanical property data of the sawn timber 5 to the computer control system 1 for analysis. The code spraying equipment 7 is used for spraying code marks on the sawn timber 5 on the conveying device, the code spraying equipment 7 is communicably connected with the computer control system 1 through a wire, and the computer control system 1 can control the code spraying equipment 7 to spray corresponding identification characters on the surfaces of the sawn timber 5 according to the analysis result.
In the process of conveying the sawn timber 5 through the conveying device, the defects on the surface of the sawn timber 5 can be obtained through the visual detection device, the internal defects of the sawn timber 5 are obtained through the X-ray detection device, the elastic modulus and the mechanical property of the sawn timber 5 are detected through the stress detection device 6, whether the sawn timber 5 meets the standard or not and what grade the sawn timber 5 can reach is analyzed through the computer control system 1, and the sawn timber 5 is marked through the code spraying equipment 7. So set up, thereby adopt multiple detection means to jointly detect the sawn timber and carry out the classification and can improve detection efficiency, control production quality practices thrift manufacturing cost. The traditional wood detection device only adopts a single means to detect the wood and detects according to the surface defects or the mechanical properties of the sawn timber, and the invention adopts a plurality of detection means to comprehensively detect the surface, the interior and the mechanical properties of the sawn timber, so that the detection result is more accurate. In addition, different detection devices in the sawn timber grading equipment are independently controlled and can independently work, single detection or combined detection can be carried out on sawn timber according to different working environments and production requirements, the operation is simple, the production efficiency can be improved, and the production quality can be controlled.
Referring to fig. 1, in some embodiments, the conveying device includes a first conveying mechanism 14, a second conveying mechanism 15, a third conveying mechanism 16, and a fourth conveying mechanism 17, which have the same conveying direction. The first conveying mechanism 14, the second conveying mechanism 15, the third conveying mechanism 16 and the fourth conveying mechanism 17 may be all belt conveying mechanisms, each belt conveying mechanism may be driven by a motor 8, and each motor 8 may also be communicably connected to the computer control system 1 through a wire, so that the computer control system 1 can control the operation state of the conveying device. The first conveying mechanism 14, the second conveying mechanism 15, the third conveying mechanism 16 and the fourth conveying mechanism 17 are arranged end to end in sequence with a gap between the adjacent two. The visual detection device is arranged between the first conveying mechanism 14 and the second conveying mechanism 15, the X-ray detection device is arranged between the second conveying mechanism 15 and the third conveying mechanism 16, and the stress detection device 6 is arranged between the third conveying mechanism 16 and the fourth conveying mechanism 17. With this arrangement, when the sawn timber 5 is in the gap region between the first conveying mechanism 14 and the second conveying mechanism 15, the visual inspection device can be used to inspect the upper and lower parts of the sawn timber 5 at the same time, when the sawn timber 5 is in the gap region between the second conveying mechanism 15 and the third conveying mechanism 16, the X-ray inspection device can be used to inspect the internal defect of the sawn timber 5, and when the sawn timber 5 is in the gap region between the second conveying mechanism 16 and the third conveying mechanism 17, the stress inspection device 6 can be used to inspect the sawn timber 5 mechanically.
In some embodiments, the visual inspection device includes a first camera 3, a first light source 4, a second camera 12, and a second light source 13. The visual inspection apparatus may further include a support on which the first camera 3, the first light source 4, the second camera 12, and the second light source 13 are fixed, the support being disposed between the first conveying mechanism 14 and the second conveying mechanism 15. Referring to fig. 1, the first camera 3 is located above the conveying surface of the conveying device to photograph the upper side of the sawn timber 5, and the first light source 4 is used for irradiating the upper side of the sawn timber 5 to provide light for the first camera 3. The second camera 12 is disposed below the conveying surface of the conveying device to photograph the lower side of the sawn timber 5, and the second light source 13 is used for irradiating the lower side of the sawn timber 5 to provide light for the second camera 12. The first camera 3 and the second camera 12 are each communicably connected with the computer control system 1 to transfer the captured images to the computer control system 1 for analysis. The computer control system 1 analyzes the surface defects of the input image, determines the factors such as the type, the number, the size, the position and the like of the surface defects of the sawn timber 5, and carries out grade evaluation on the sawn timber 5 according to the corresponding visual grading standard. For example, visual grading criteria may be built into a standards database, and the captured images may then be analyzed against the standards database.
Referring to fig. 1, in some embodiments, the X-ray detection device includes an X-ray emitter 10 and an X-ray receiver 11, the X-ray emitter 10 is disposed above the conveying surface of the conveying device, and the X-ray receiver 11 is disposed below the conveying surface of the conveying device to detect internal defects of the sawn timber 5 passing between the X-ray emitter 10 and the X-ray receiver 11. The X-ray emitter 10 releases X-rays, the X-rays penetrate through the sawn timber 5 between the X-ray emitter 10 and the X-ray receiver 11, the X-ray receiver 11 receives the X-rays and forms an image in the X-ray receiver 11, the X-ray receiver 11 transmits the image to the computer control system 1 for analysis, and the computer control system 1 analyzes whether the sawn timber 5 has defects such as decay or holes, so that whether the sawn timber 5 can meet the structural requirements is judged.
In some embodiments, the first conveying mechanism 14, the second conveying mechanism 15, the third conveying mechanism 16 and the fourth conveying mechanism 17 are arranged in such a conveying direction that the sawn timber 5 passes through the first conveying mechanism 14, the second conveying mechanism 15, the third conveying mechanism 16 and the fourth conveying mechanism 17 in sequence. The sawn timber grading equipment also comprises a water content detection device 2 for detecting the water content of the sawn timber 5. The moisture content detection device 2 is disposed on the first conveying mechanism 14, and is communicably connected to the computer control system 1 through a wire. The stress detection device 6 is arranged between the third transportation 16 and the fourth transportation 17, and the code spraying equipment 7 is arranged on the fourth conveying mechanism 16. It should be noted that the moisture content detection device 2, the stress detection device 6, and the code spraying device 7 all belong to the prior art, and all belong to products available from the market, and the structural principle thereof does not belong to the key point of the discussion, and is not repeated here.
In some embodiments, the apparatus for grading sawn timber further comprises a load cell 9 for detecting the weight of the sawn timber 5, the load cell 9 being arranged on the first conveyor 14 for detecting the weight of the sawn timber 5 on the first conveyor 14, the load cell 9 being communicatively connected to the computer control system 1 by a wire. It should be noted that the load cell 9 belongs to the prior art, and the product thereof can be purchased from the market, and the weight data can be obtained through calculation on the structural principle without the electric signal generated by the deformation of the load cell 9, which is not the focus of the discussion herein and is not repeated herein. When the sawn timber 5 is on the first conveying mechanism 14, the pressure of the sawn timber 5 on the first conveying mechanism 14 enables the weighing sensor 9 to generate deformation to obtain an electric signal, and weight data of the sawn timber 5 can be obtained through calculation.
The embodiment of the invention also provides a method for dividing sawn timber into equal parts by using the equipment for dividing sawn timber, which comprises the following steps:
and detecting the water content, detecting the water content of the sawn timber 5 on the first conveying mechanism 14 through the water content detecting device 2, and transmitting the detected water content data to the computer control system 1.
Weighing, after detecting the moisture content, acquiring the weight of the sawn timber 5 on the first conveying mechanism 14 through the weighing sensor 9, and transmitting the detected weight data to the computer control system 1.
And (3) analyzing surface defects, after weighing, respectively acquiring images of the surface of the sawn timber 5 through the first camera 3 and the second camera 12, transmitting the acquired images to the computer control system 1, analyzing the acquired images through the computer control system 1, performing a next detection procedure if the sawn timber 5 meets the standard, and directly conveying the sawn timber 5 to the code spraying equipment 7 through the conveying device if the sawn timber 5 does not meet the standard to spray unqualified character samples.
And (3) internal defect analysis, after surface defect analysis, detecting the interior of the sawn timber 5 through an X-ray detection device, transmitting X-rays by an X-ray transmitter 10, enabling the X-rays to penetrate through the sawn timber 5 and be received by an X-ray receiver 11, enabling the X-ray receiver 11 to transmit the received and formed images to a computer control system 1, analyzing whether the sawn timber 5 meets the structural requirements or not by the computer control system 1, if the sawn timber 5 meets the structural requirements, carrying out the next detection procedure, and if the interior of the sawn timber 5 does not meet the structural requirements, directly conveying the sawn timber to a code spraying device 7 and spraying unqualified character samples.
And mechanical property detection, after internal defect analysis, performing mechanical property detection on the sawn timber 5 through the stress detection device 6, transmitting a detection result to the computer control system 1 to judge whether the sawn timber meets the mechanical property requirement, if the sawn timber 5 does not meet the mechanical property requirement, conveying the sawn timber to the code spraying device to spray unqualified character patterns, if the target sawn timber 5 meets the mechanical property requirement, determining the grade of the sawn timber 5 by combining the detection result of the visual detection device, the detection result of the X-ray detection device and the detection result of the stress detection device 6, and then spraying corresponding grade marks by the code spraying device 7.
So set up, thereby adopt multiple detection means to jointly detect sawn timber 5 and carry out the classification and can improve detection efficiency, control production quality practices thrift manufacturing cost. The traditional wood detection device only adopts a single means to detect the wood and detects according to the surface defects or the mechanical properties of the sawn timber 5, and the invention adopts a plurality of detection means to comprehensively detect the surface defects, the internal structure and the mechanical properties of the sawn timber 5, so that the detection result is more accurate. In addition, different detection devices in the sawn timber 5 are respectively and equally arranged and independently controlled, the sawn timber can independently work, the sawn timber 5 can be singly detected or jointly detected according to different working environments and production requirements, the operation is simple, the production efficiency can be improved, and the production quality can be controlled.
In some embodiments the sawn timber grading device further comprises a photoelectric sensor for detecting the position of movement of the sawn timber 5. For example, the photoelectric sensor may include a first photoelectric sensor provided on the first conveyor 14 upstream of the moisture content detection device 2 and near the moisture content detection device 2, and also communicably connected to the computer control system 1 through a wire. When sawn timber 5 shelters from first photoelectric sensor, first photoelectric sensor conveys signal to computer control system 1, and when computer control system 1 received this position signal, control moisture content detection device 2 work, and after computer control system 1 received the moisture content testing result, moisture content detection device 2 reset, and weighing sensor 9 weighs surveyed sawn timber 5. Similarly, a photoelectric sensor may be disposed upstream of the visual detection device, the X-ray detection device, and the stress detection device 6, so that the corresponding detection device is turned on when the sawn timber 5 reaches the corresponding position.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. A sawn timber dividing apparatus, comprising:
a conveying device for conveying sawn timber;
the visual detection device is used for acquiring image information of the outer surface of the sawn timber on the conveying device;
the X-ray detection device is used for acquiring the structural information inside the sawn timber on the conveying device;
the stress detection device is used for detecting the elastic modulus and the mechanical property of the sawn timber on the conveying device;
the code spraying equipment is used for spraying code marks on the sawn timber on the conveying device;
the visual detection device, the X-ray detection device, the stress detection device and the code spraying equipment are respectively connected with the computer control system in a communication mode through leads so as to transmit information acquired by the visual detection device, the X-ray detection device and the stress detection device to the computer control system.
2. The sawn timber grading equipment according to claim 1, wherein the conveying device comprises a first conveying mechanism, a second conveying mechanism, a third conveying mechanism and a fourth conveying mechanism which are consistent in conveying direction, the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism are sequentially arranged end to end with a gap between the first conveying mechanism and the second conveying mechanism, the visual detection device is arranged between the first conveying mechanism and the second conveying mechanism, the X-ray detection device is arranged between the second conveying mechanism and the third conveying mechanism, the stress detection device is arranged between the third conveying mechanism and the fourth conveying mechanism, and the code spraying equipment is arranged on the fourth conveying mechanism.
3. The sawn timber equal-dividing apparatus according to claim 2, wherein the visual inspection device comprises a first camera disposed above the conveying surface of the conveying device to photograph above the sawn timber, a first light source for illuminating above the sawn timber to illuminate the first camera directly over the sawn timber portion, a second camera disposed below the conveying surface of the conveying device to photograph below the sawn timber, and a second light source for illuminating below the sawn timber to illuminate the second camera directly over the sawn timber portion.
4. The sawn timber dividing apparatus according to claim 2, wherein the X-ray detection device comprises an X-ray emitter and an X-ray receiver, the X-ray emitter being disposed above the conveying surface of the conveying device, the X-ray receiver being disposed below the conveying surface of the conveying device to detect the internal configuration of the sawn timber passing between the X-ray emitter and the X-ray receiver.
5. The sawn timber equal-dividing device according to claim 2, wherein the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism have the same conveying direction, so that the sawn timber passes through the first conveying mechanism, the second conveying mechanism, the third conveying mechanism and the fourth conveying mechanism in sequence, the sawn timber equal-dividing device further comprises a moisture content detection device for detecting the moisture content of the sawn timber, and the moisture content detection device is arranged on the first conveying mechanism and is communicably connected with the computer control system through a lead.
6. The sawn timber dividing apparatus according to claim 2, further comprising a load cell for detecting the weight of the sawn timber, the load cell being arranged on the first conveyor mechanism to detect the weight of the sawn timber on the first conveyor mechanism, the load cell being communicatively connected with the computer control system by a wire.
7. A method for grading sawn timber using a sawn timber grading device, the sawn timber grading device being as defined in claim 6, the method comprising:
detecting the moisture content, detecting the moisture content of the sawn timber on the first conveying mechanism through the moisture content detecting device, and transmitting the detected moisture content data to the computer control system;
weighing, namely acquiring the weight of the sawn timber on the first conveying mechanism through a weighing sensor after detecting the water content, and transmitting the detected weight data to the computer control system;
analyzing surface defects, namely respectively acquiring images of the surface of the sawn timber through a first camera and a second camera after weighing, transmitting the acquired images to the computer control system, analyzing the acquired images by the computer control system, performing the next detection procedure if the sawn timber meets the standard, and directly conveying the sawn timber to the code spraying equipment if the sawn timber does not meet the standard to spray unqualified character samples;
the method comprises the following steps of analyzing internal defects, detecting the interior of a sawn timber through the X-ray detection device after surface defects are analyzed, transmitting X-rays by the X-ray transmitter, enabling the X-rays to penetrate through the sawn timber and be received by the X-ray receiver, transmitting received images to the computer control system by the X-ray receiver, analyzing whether the sawn timber meets structural requirements or not by the computer control system, carrying out the next detection procedure if the sawn timber meets the structural requirements, and directly conveying the sawn timber to code spraying equipment if the interior of the sawn timber does not meet the structural requirements to spray unqualified character samples;
and mechanical property detection, after internal defect analysis, performing mechanical property detection on the sawn timber through a stress detection device, transmitting a detection result to the computer control system to judge whether the sawn timber meets the requirement of the mechanical property, if the sawn timber does not meet the requirement of the mechanical property, transmitting the sawn timber to the code spraying device to spray unqualified character patterns, if the target sawn timber meets the requirement of the mechanical property, determining the grade of the sawn timber by combining the detection result of the visual detection device, the detection result of the X-ray detection device and the detection result of the stress detection device, and spraying corresponding grade marks by the code spraying device.
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| CN202010248641.4A CN111468427A (en) | 2020-04-01 | 2020-04-01 | Sawn timber grading equipment and grading method |
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| CN202010248641.4A CN111468427A (en) | 2020-04-01 | 2020-04-01 | Sawn timber grading equipment and grading method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115931596A (en) * | 2022-12-22 | 2023-04-07 | 中国林业科学研究院木材工业研究所 | Quality control system and method for structural sawn timber |
| CN116973209A (en) * | 2023-09-25 | 2023-10-31 | 中国林业科学研究院木材工业研究所 | Continuous on-line detection device and method for strength grade of sawn timber for structure |
-
2020
- 2020-04-01 CN CN202010248641.4A patent/CN111468427A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115931596A (en) * | 2022-12-22 | 2023-04-07 | 中国林业科学研究院木材工业研究所 | Quality control system and method for structural sawn timber |
| CN115931596B (en) * | 2022-12-22 | 2023-08-04 | 中国林业科学研究院木材工业研究所 | Quality control system and method for sawn timber for structure |
| CN116973209A (en) * | 2023-09-25 | 2023-10-31 | 中国林业科学研究院木材工业研究所 | Continuous on-line detection device and method for strength grade of sawn timber for structure |
| CN116973209B (en) * | 2023-09-25 | 2023-12-08 | 中国林业科学研究院木材工业研究所 | Continuous on-line detection device and method for strength grade of sawn timber for structure |
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