CN109968456B - Automatic longitudinal cutting system for slope corrugated wood board - Google Patents
Automatic longitudinal cutting system for slope corrugated wood board Download PDFInfo
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- CN109968456B CN109968456B CN201910292148.XA CN201910292148A CN109968456B CN 109968456 B CN109968456 B CN 109968456B CN 201910292148 A CN201910292148 A CN 201910292148A CN 109968456 B CN109968456 B CN 109968456B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/02—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only
- B27B5/04—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only for edge trimming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/29—Details; Component parts; Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
- B27G23/00—Gauging means specially designed for adjusting of tools or guides, e.g. adjusting cutting blades in cutter blocks
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- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
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Abstract
The invention discloses an automatic longitudinal cutting system for a slope corrugated board, belongs to the field of cutting of boards, particularly cutting of wood boards, and is characterized in that a disc multi-blade saw body is applied, and the automatic longitudinal cutting system further comprises a controller, an industrial personal computer and an online measuring device arranged on a conveying roller way. The size of the wood board is detected in real time in the process of advancing the wood board through the online measuring device, the width of the minimum rectangle of the wood board is calculated, and then the driving device is controlled to automatically adjust the position of the saw blade to saw. The wood board production line has the beneficial effects of high utilization rate of the wood board, high working efficiency, reduced labor intensity and reduced labor cost.
Description
Technical Field
The invention relates to a plate cutting device, in particular to a wood plate cutting device, and specifically relates to an automatic longitudinal cutting system for a slope corrugated board.
Background
In the wood processing process, the slope corrugated wood board with the cross section similar to the trapezoid shown in fig. 3 needs to be longitudinally cut, and the process requirements are as follows: the slope edge part of the slope edge wood plate is cut off by a longitudinal cutting saw, so that the section of the useful wood plate becomes rectangular. Or longitudinally cutting the wood board with the rectangular middle cross section while longitudinally cutting off the slope edge, and sawing the wood board to the required size.
The core device of the longitudinal cutting is a multi-piece longitudinal cutting saw, and a saw blade of the longitudinal cutting saw can move transversely, so that the wood board can be longitudinally cut at different positions. At present, the semi-automatic mode is adopted in the prior art, namely, the sawing position is adjusted and set manually under the indication of a red laser line, a plurality of longitudinal sawing saw blades automatically follow up according to manual adjustment to generate the sawing position, and then, a wood board is longitudinally fed to complete the sawing at one time. The whole process needs 2 people in the operation post. The semi-automatic mode is called because the determination of the sawing position is completely done by the operator manually moving the laser line and then visually observing it, and the movement of the saw blade of the multi-piece slitting saw is done by the operator visually observing information and then manually setting it.
The semi-automatic mode meets the process requirements to a certain extent, but has the following defects:
firstly, when the sawing position is manually set, the wood plate is in a static state, so that continuous longitudinal cutting cannot be realized, and the production efficiency is low;
secondly, the sawing position is set manually according to visual observation, the setting precision is not high, and the low yield or the low rate of qualified products can be caused;
thirdly, the operator must concentrate on setting the sawing position in the whole working process, and the operator must concentrate on the spirit and be easy to fatigue.
Therefore, it is an urgent requirement to design an automatic slitting system for a sloping corrugated wood board, which realizes continuous slitting, automatically detects the size of the board and automatically adjusts the position of a saw blade.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the automatic longitudinal cutting system for the sloping corrugated wood board is capable of achieving continuous longitudinal cutting, automatically detecting the size of the board and automatically adjusting the position of a saw blade.
The technical scheme of the technical problem to be solved by the invention is as follows: the utility model provides an automatic rip cutting system of slope stupefied plank, includes the disc multiple blade saw body, the disc multiple blade saw body includes rollgang, saw bit guiding mechanism's drive arrangement is motor, its characterized in that: the automatic measuring device comprises a fixing support, an image capturing device and a light source, wherein the image capturing device and the light source are arranged on the fixing support, the fixing support is fixedly connected with the conveying roller way, the image capturing device and the light source are positioned on the upper portion of the conveying roller way, an included angle of 30-60 degrees is formed between the length direction of the image capturing device and the length direction of the slope corrugated wood board, the controller is electrically connected with the image capturing device, the light source and a driving device of the saw blade adjusting mechanism, the image capturing device is electrically connected with the industrial personal computer for transmitting data, and an image processing program is installed on the industrial personal computer;
the working method of the system comprises the following steps:
step 1, inputting sawing parameters through a human-computer interaction device of a controller,
step 2, the controller controls the image capturing device to continuously capture images of the sloping corrugated wood plate moving towards the saw blade,
step 3, the image capturing device transmits the acquired image data to the industrial personal computer,
step 4, the industrial personal computer analyzes and calculates all the images through an image processing program to obtain the image data of the sloping corrugated wood board at each position and determine the parameters of the narrowest rectangular wood board,
step 5, the industrial personal computer sends the parameters of the narrowest rectangular wood board to the controller,
and 6, controlling a driving device of the saw blade adjusting mechanism by the controller according to the input sawing parameters and the parameters of the narrowest rectangular wood board so as to change the sawing position of the circular saw blade.
Preferably, the image capturing device is an industrial camera, the light source is a laser, the laser emits cross light, one light of the cross light is parallel to the length direction of the sloping corrugated board,
or the light source comprises two lasers emitting straight light rays, the straight light rays emitted by the two lasers are vertically intersected, and one of the straight light rays is parallel to the length direction of the sloping corrugated wood board.
Preferably, the online measuring devices are provided with two sets, and the two sets of online measuring devices are respectively positioned at the upper part and the lower part of the slope corrugated board.
Preferably, in the step 2, the moving speed of the corrugated board is 50m/min, the frame frequency of the industrial camera is 60 frames/second, and the image taking interval on the corrugated board is 14 mm.
Preferably, in the step 1, a proportionality coefficient between the actual size and the image size is obtained, specifically:
step 1.1, after the on-line measuring device is fixed, the standard calibration card is arranged in the image capturing area of the image capturing device,
step 1.2, the on-line measuring device captures the image of the standard calibration card and transmits the image data to the industrial personal computer, the industrial personal computer processes the image and calculates the image data of the standard calibration card,
step 1.3, manually measuring the standard calibration card or calculating the proportionality coefficient of the actual size and the size in the image according to the data of the standard calibration card,
step 1.4, storing the proportion coefficient obtained in the step 1.3 into a system for subsequent calculation;
in the step 4, the process of the step,
step 4.1, the image processing software acquires each line segment in the similar trapezoid and the number of pixels of the trapezoid height, further acquires the image pixel data of the contour line inside the image-taking area, acquires the length of the line segment in the image according to the pixel data,
step 4.2, processing each image to obtain length data of Xn1, Xn2, Xn3, Xn4 and Hn in the image, wherein n is a positive integer,
step 4.3, comparing the sizes of Xn2 and Xn3 to obtain the maximum value Xmax2 of Xn2 and the minimum value Xmin3 of Xn3,
the width of the narrowest rectangular wood board is Lnu = Xmin3-Xmax2,
and 4.4, calculating actual size data by using the scale factor obtained in the step 1.3 and the image size data obtained in the step 4.3.
Preferably, the controller is a PLC.
Preferably, the driving device of the electric control mechanism of the saw blade adjusting mechanism is a servo motor system,
in step 6, the controller outputs a pulse train to the servo motor system that generates a corresponding speed and position for changing the position of the circular saw blade.
Preferably, the driving device of the electric control mechanism of the saw blade adjusting mechanism adopts a common variable frequency motor system,
in the step 6, the controller continuously detects the position of the saw blade and controls the speed and start and stop of the variable frequency motor according to the position of the saw blade to control the position of the circular saw blade.
The invention has the beneficial effects that:
1. the utilization rate of the wood board is high. Due to the fact that the high-precision size of the wood board can be obtained through the online measuring device, the optimized cutting of the wood board slope arris can be achieved.
2. The working efficiency is high. The system realizes the continuous longitudinal cutting of the wood board, and the longitudinal cutting feed speed of the wood board can reach more than 50m/S, thereby realizing higher processing efficiency.
3. The labor intensity is reduced, and the labor cost is reduced. In actual work, one operator can be arranged to carry out on-site inspection and emergency treatment, and the task of operating the operators under normal conditions is only inspection, so that the labor intensity is extremely low. Meanwhile, one operator can be reduced, and the labor cost in the production process is saved.
Drawings
Figure 1 is a schematic view of one embodiment of the present invention,
figure 2 is a schematic diagram of a control system according to one embodiment of the present invention,
FIG. 3 is a three-dimensional schematic view illustrating an image capturing principle of a corrugated board according to an embodiment of the present invention,
fig. 4 is a schematic view of a view in the direction a in fig. 3.
In the figure:
500. a drive device; 430. A light source; 420. An image capturing device; 410. Fixing a bracket; 200. A controller; 100. A rollgang;
Detailed Description
In order to make the technical solution and the advantages of the present invention clearer, the following explains embodiments of the present invention in further detail.
As shown in fig. 1, the automatic slitting system for the slope corrugated wood board comprises a disc multi-blade saw body, the disc multi-blade saw body comprises a roller conveyor 100 and a saw blade adjusting mechanism, a driving device 500 of the saw blade adjusting mechanism is a motor, and the automatic slitting system further comprises a controller 200, an industrial personal computer 300 and an online measuring device arranged on the roller conveyor 100.
The on-line measuring device is used for detecting the size of the detected corrugated board, and includes a fixing bracket 410, and an image capturing device 420 and a light source 430 which are installed on the fixing bracket 410. The image capturing device 420 is used for acquiring a profile of a cross section of a certain point of the corrugated board, and the light source 430 serves as the image capturing device.
In order to increase the sharpness of the image, the image capturing device 420 is an industrial camera.
In order to facilitate image processing, the light source 430 is a laser, such as a laser level used in the building field, the laser of the present invention emits cross light, one of the cross light is parallel to the length direction of the sloping corrugated wood board, and the other light is projected on the sloping corrugated wood board and is perpendicular to the length direction of the sloping corrugated wood board. Alternatively, the light source 430 may include two lasers emitting in-line light, where the in-line light emitted by the two lasers perpendicularly intersects and one of the in-line light is parallel to the length of the corrugated board.
As shown in fig. 3, in the above two schemes, the light parallel to the longitudinal direction of the corrugated board 900 is the reference line 920, and the light perpendicular to the reference line, that is, the light projected on the corrugated board is the contour line 910. Wherein the length direction of the corrugated board 900 is parallel to the advancing direction of the corrugated board 900 when the incoming line is longitudinally cut.
The fixing bracket is used for mounting the image capturing device 420 and the light source 430, and simultaneously for ensuring the stability of the relative position between the image capturing device 420 and the light source 430.
In this embodiment, the fixing support is in a frame shape with an opening at the lower part, and the upper part of the fixing support is provided with a cross arm, and the length direction of the cross arm is parallel to the length direction of the slope corrugated wood board. The two ends of the cross arm are respectively used for installing the image capturing device 420 and the light source 430.
The fixing bracket 410 may be fixedly connected with the rollgang 100, and two vertical sides of the fixing bracket 410 are fixedly connected with edges of both sides of the rollgang 100, and a side of an upper portion of the fixing bracket 410 is straddled at an upper portion of the rollgang. The cross arm is located at the upper part of the roller conveyor 100, and the corresponding image capturing device 420 and the light source 430 are located at the upper part of the roller conveyor. The length direction of the image capturing device 420 and the length direction of the sloping corrugated board form an included angle of 30-60 degrees, so as to better obtain the contour line of an image capturing area.
Or the fixed bracket 410 is directly placed on the ground and spans the upper part of the rollgang.
In the running process of the slope corrugated wood board, especially in the flow line operation process, after the board is produced from the log and enters the rollgang 100, the bottom edge of the board with shorter length is not necessarily above or below, therefore, in order to reduce the mechanical structure for detecting the board and turning the board, two online measuring devices can be adopted, wherein the image capturing device 420 and the light source 430 are respectively provided with one set at the upper part and the lower part of the rollgang 100. Preferably, in order to ensure the stability of the plate, the rollgang 100 is a dual rollgang, and the plate is clamped in the middle of the rollgang 100 and moves forward.
The controller 200 is electrically connected to the image capturing device 420, the light source 430, and the driving device 500 of the blade adjusting mechanism, and can control the driving system of the saw blade and obtain the detection data of each sensor of the disc multi-blade saw body. In the invention, the controller adopts PLC. The image capturing device 420 is electrically connected to the industrial personal computer 300 for transmitting data, and the industrial personal computer 300 is installed with an image processing program. Since the image data has a large amount of information, this embodiment uses a gigabit network cable for data transmission or uses an optical fiber for data transmission. Image processing programs or image recognition techniques are already used in the prior art. The principle of image recognition in the invention is the most basic principle, namely, the length of a line in an image is obtained by adopting a pixel statistics method. Therefore, in the present invention, the light emitted from the light source 430 and projected onto the corrugated board is a colored light different from the color of the board, and preferably, a red light is used in the present invention. The color is used to identify lines in the image, and then the length is calculated according to the number of pixels. In the invention, two parallel reference lines can be adopted, namely three lasers generating straight lines are arranged, wherein the straight lines of the two lasers are parallel to the length direction of the sloping corrugated wood board, and the distance between the two parallel straight lines is known and used as a reference. Or after erecting the light source 430 and the image capturing device 420, capturing an image of the image capturing area, where a line with a known length is set, and then calculating the reference. After the reference is calculated, the length can be counted by the statistical pixels.
The working method of the system comprises the following steps:
step 1, inputting sawing parameters through a human-computer interaction device of the controller 200.
In the process requirements, different boards can be cut according to different requirements, if rectangular boards and similar rectangular boards are required, the yield requirement is too high, the offset is large, the condition that a small number of round edges exist in the finished wood board is possible, and a smaller offset needs to be set for the rectangle, so that certain offset needs to be performed on the basis of calculation data to realize the highest-efficiency yield. The offset may be input from a human machine interface. The user determines whether the offset is needed and the offset size according to the needs of the user. In order to facilitate human-computer interaction, the controller is generally provided with a human-computer interaction device such as a keyboard, a display or a touch screen.
Preferably, in this step, obtaining a proportionality coefficient between the actual size and the image size is further included, specifically:
step 1.1, after the on-line measuring device is fixed, the standard calibration card is placed in the image capturing area of the image capturing device 420,
step 1.2, the on-line measuring device captures the image of the standard calibration card and transmits the image data to the industrial personal computer 300, the industrial personal computer 300 processes the image to calculate the image data of the standard calibration card,
step 1.3, manually measuring the standard calibration card or calculating the proportionality coefficient of the actual size and the size in the image according to the data of the standard calibration card,
and step 1.4, storing the proportionality coefficient obtained in the step 1.3 into a system for subsequent calculation.
Step 2, the controller 200 controls the image capturing device 420 to continuously capture images of the corrugated board moving towards the saw blade.
The moving speed, the image taking interval and the camera frame frequency of the wood board are selected according to the required technological parameters and economic compromise, and the image taking interval is 14mm when the camera frame frequency is 60 frames/second and the moving speed is more than or equal to 50 m/min. If the speed is increased and the image taking interval is decreased at the same time, the frame frequency is increased and the data transmission rate between the controller and the industrial personal computer 300 is increased.
And 3, transmitting the acquired image data to the industrial personal computer 300 by the image capturing device 420.
Step 4, the industrial personal computer 300 analyzes and calculates all the images through an image processing program to obtain image data of the slope corrugated wood board at each position, and determines parameters of the narrowest rectangular wood board, which specifically comprises the following steps:
the method comprises the following steps:
step 4.1, the image processing software acquires each line segment in the similar trapezoid and the number of pixels of the trapezoid height, further acquires the image pixel data of the contour line inside the image-taking area, acquires the length of the line segment in the image according to the pixel data,
step 4.2, processing each image to obtain length data of Xn1, Xn2, Xn3, Xn4 and Hn in the image, wherein n is a positive integer,
or, the actual data is calculated at this time, and is not calculated in step 4.4.
Step 4.3, comparing the sizes of Xn2 and Xn3 to obtain the maximum value Xmax2 of Xn2 and the minimum value Xmin3 of Xn3,
the width of the narrowest rectangular wood board is Lnu = Xmin3-Xmax2,
in this step, when determining the maximum value Xmax2, when obtaining a maximum value Xmax2, it may be determined whether the length of the point position Xn1 is greater than the length of the point Xn2, and if so, the maximum value is the length of the point Xn 1. Also in determining the minimum Xmin3, when obtaining a minimum value Xn3, it is necessary to determine whether Xn4 is smaller than Xn3, and if so, Xn3 is selected. Namely: xmax2 is selected from Xn1 and Xn2, and Xmin3 is selected from Xn3 and Xn 4.
And 4.4, calculating actual size data by using the scale factor obtained in the step 1.3 and the image size data obtained in the step 4.3.
In this step, the obtained trapezoid can be further converted into an actual size according to the included angle in fig. 4. In practice, the coefficient calculated in step 1 cannot be used to convert the actual length in a calculation manner due to problems such as the installation angle.
And 5, sending the parameters of the narrowest rectangular wood board to the controller 200 by the industrial personal computer 300.
And 6, controlling a driving device 500 of the saw blade adjusting mechanism by the controller 200 according to the input sawing parameters and the parameters of the narrowest rectangular wood board so as to change the sawing position of the circular saw blade.
If the drive means 500 of the blade adjustment mechanism is a servo motor system, the controller outputs a pulse train to the servo motor system that generates a corresponding speed and position for changing the position of the circular saw blade.
If the driving device 500 of the saw blade adjusting mechanism adopts a common variable frequency motor system, the controller 200 continuously detects the position of the saw blade and controls the speed and start and stop of the variable frequency motor according to the position of the saw blade to control the position of the circular saw blade.
In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and various changes and modifications can be made by workers in the light of the above description without departing from the technical spirit of the present invention. The technical scope of the present invention is not limited to the content of the specification, and all equivalent changes and modifications in the shape, structure, characteristics and spirit described in the scope of the claims of the present invention are included in the scope of the claims of the present invention.
Claims (7)
1. The utility model provides an automatic rip cutting system of slope stupefied plank, includes the disc multiple blade saw body, the disc multiple blade saw body includes rollgang (100), saw bit guiding mechanism's drive arrangement (500) are motor, its characterized in that:
the device also comprises a controller (200) and an industrial personal computer (300), an online measuring device is arranged on the conveying roller way (100),
the on-line measuring device comprises a fixed support (410), an image capturing device (420) and a light source (430) which are arranged on the fixed support (410), the fixed support (410) is fixedly connected with the roller conveyor (100), the image capturing device (420) and the light source (430) are positioned at the upper part of the roller conveyor (100),
the length direction of the image capturing device (420) forms an included angle of 30-60 degrees with the length direction of the sloping corrugated board,
the controller (200) is electrically connected with the image capturing device (420), the light source (430) and the driving device (500) of the saw blade adjusting mechanism, the image capturing device (420) is electrically connected with the industrial personal computer (300) for transmitting data, the industrial personal computer (300) is provided with an image processing program,
the working method of the system comprises the following steps:
step 1, inputting sawing parameters through a man-machine interaction device of a controller (200), wherein the sawing parameters comprise a ratio coefficient of an actual size to an image size, and the method specifically comprises the following steps:
step 1.1, after the on-line measuring device is fixed, the standard calibration card is placed in the image capturing area of the image capturing device (420),
step 1.2, the on-line measuring device captures the image of the standard calibration card and transmits the image data to the industrial personal computer (300), the industrial personal computer (300) processes the image to calculate the image data of the standard calibration card,
step 1.3, manually measuring the standard calibration card or calculating the proportionality coefficient of the actual size and the size in the image according to the data of the standard calibration card,
step 1.4, storing the proportion coefficient obtained in the step 1.3 into a system for subsequent calculation;
step 2, the controller (200) controls the image capturing device (420) to continuously capture images of the sloping corrugated wood plate moving towards the saw blade,
step 3, the image capturing device (420) transmits the acquired image data to the industrial personal computer (300),
and 4, analyzing and calculating all images by an industrial personal computer (300) through an image processing program to obtain image data of the slope corrugated wood board at each position, and determining parameters of the narrowest rectangular wood board, wherein the parameters are as follows:
step 4.1, the image processing software acquires each line segment in the similar trapezoid and the number of pixels of the trapezoid height, further acquires the image pixel data of the contour line inside the image-taking area, acquires the length of the line segment in the image according to the pixel data,
step 4.2, processing each image to obtain length data of Xn1, Xn2, Xn3, Xn4 and Hn in the image, wherein n is a positive integer,
step 4.3, comparing the sizes of Xn2 and Xn3 to obtain the maximum value Xmax2 of Xn2 and the minimum value Xmin3 of Xn3,
the width of the narrowest rectangular wood board is Lnu which is Xmin3-Xmax2,
step 4.4, calculating actual size data by using the scale factor obtained in the step 1.3 and the image size data obtained in the step 4.3;
step 5, the industrial personal computer (300) sends the parameters of the narrowest rectangular wood board to the controller (200),
and 6, controlling a driving device (500) of the saw blade adjusting mechanism by the controller (200) according to the input sawing parameters and the parameters of the narrowest rectangular wood board so as to change the sawing position of the circular saw blade.
2. The automatic slitting system of a corrugated board according to claim 1, characterized in that:
the image capturing device (420) is an industrial camera,
the light source (430) is a laser, the laser emits cross light, one light of the cross light is parallel to the length direction of the sloping corrugated wood board,
or the light source (430) comprises two lasers emitting straight light rays, the straight light rays emitted by the two lasers are vertically intersected, and one of the straight light rays is parallel to the length direction of the sloping corrugated wood board.
3. The automatic slitting system of a corrugated board according to claim 1, characterized in that:
the online measuring device is provided with two sets, and the two sets of online measuring devices are respectively positioned at the upper part and the lower part of the slope corrugated wood board.
4. An automatic slitting system of a corrugated board according to claim 2, characterized in that:
in the step 2, the advancing speed of the sloping corrugated wood board is 50m/min, the frame frequency of the industrial camera is 60 frames/second, and the image taking interval on the sloping corrugated wood board is 14 mm.
5. The automatic slitting system of a corrugated board according to claim 1, characterized in that:
the controller (200) is a PLC.
6. An automatic slitting system of a corrugated board according to claim 5, characterized in that:
the driving device (500) of the electric control mechanism of the saw blade adjusting mechanism is a servo motor system,
in step 6, the controller outputs a pulse train to the servo motor system that generates a corresponding speed and position for changing the position of the circular saw blade.
7. An automatic slitting system of a corrugated board according to claim 5, characterized in that:
the driving device (500) of the electric control mechanism of the saw blade adjusting mechanism adopts a common variable frequency motor system,
in the step 6, the controller (200) continuously detects the position of the saw blade and controls the speed and start and stop of the variable frequency motor according to the position of the saw blade to control the position of the circular saw blade.
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| CN105525479A (en) * | 2016-02-24 | 2016-04-27 | 苏州红隼机电科技有限公司 | Carpet longitudinal cutting method and system based on computer vision technology |
| CN205588411U (en) * | 2016-04-17 | 2016-09-21 | 临沂金轮热压机械有限公司 | Limit production line is sawed with great ease to intelligence tuningout type wood -based plate |
| EP3254792A1 (en) * | 2016-06-10 | 2017-12-13 | UPM-Kymmene Wood Oy | A method for sawing edges of a wood laminate panel and an arrangement for the same |
| CN108714938A (en) * | 2018-03-23 | 2018-10-30 | 福建农林大学 | Method is sawed under a kind of unedged sawn timber based on photoelectric curtain wall |
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