CN111975915A - Rotary cutter control method and system - Google Patents
Rotary cutter control method and system Download PDFInfo
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- CN111975915A CN111975915A CN202010713786.7A CN202010713786A CN111975915A CN 111975915 A CN111975915 A CN 111975915A CN 202010713786 A CN202010713786 A CN 202010713786A CN 111975915 A CN111975915 A CN 111975915A
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- rotary
- rotary cutting
- cut
- veneer
- length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L5/00—Manufacture of veneer ; Preparatory processing therefor
- B27L5/02—Cutting strips from a rotating trunk or piece; Veneer lathes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
- B27C9/00—Multi-purpose machines; Universal machines; Equipment therefor
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- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Wood Veneers (AREA)
Abstract
The invention discloses a rotary cutter control method and a rotary cutter control system, wherein the method comprises the following steps: s100: obtaining the size, the minimum rotary cutting amount and the rotary cutting thickness of a log to be subjected to rotary cutting; s200: calculating the total length of the continuous veneer after rotary cutting according to the size, the minimum rotary cutting amount and the rotary cutting thickness; s300: calculating the length of the head end of the continuous veneer to be cut according to the total length of the veneer; s400: and (3) starting rotary cutting, wherein when the length of the rotary-cut veneer reaches S, the cutter starts cutting, and then the cutter cuts every preset length l until the rotary cutting of the log is finished. The invention improves the acquisition rate of high-quality wood veneer.
Description
Technical Field
The present invention relates to rotary cutting machines, and more particularly to a rotary cutting machine control method and system.
Background
The rotary cutter is used for rotary cutting a log with a certain length and diameter into continuous veneers for producing plywood or other artificial boards. The rotary-cut continuous veneer is cut into single veneer with specific size by a cutter. As shown in fig. 1A, when the rotary cutting machine is in operation, a log 6 to be subjected to rotary cutting is placed into the rotary cutting machine, and is held by a roller 7 of the rotary cutting machine, the roller 7 rotates to drive the log 6 to rotate in the rotary cutting machine, and during the rotation of the log 6, the round log 6 is subjected to rotary cutting by a blade 8 into continuous barks (wood chips) with a certain thickness.
Referring to fig. 1B, the log is continuously peeled into continuous bark 1, the head end 2 of the bark 1 corresponds to the outer layer of the log, the tail end 3 corresponds to the core layer of the log, and the starting reference point of the cutting knife for the continuous bark 1 is usually the head end 2, that is, the cutting knife cuts a single bark of a specific size by the cutting knife at a predetermined distance (shown by a dotted line) from the head end 2. This cutting method has the following problems: because the outer layer of the log usually has many defects, a plurality of wood veneers cut initially are usually unqualified waste products, the core layer of the log usually has good wood quality, but the residual core layer wood veneer (commonly called a tail board, and the number is 5 in the figure) after the last wood veneer (the wood veneer with the number of 4 in the figure) is cut is also waste products due to too small size, so that waste of the wood veneer with the good wood quality of the core layer is caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a rotary cutter gap adjusting device.
A rotary cutting machine control method comprising the steps of: s100: obtaining the size, the minimum rotary cutting amount and the rotary cutting thickness of a log to be subjected to rotary cutting; s200: calculating the total length of the continuous veneer after rotary cutting according to the size, the minimum rotary cutting amount and the rotary cutting thickness; s300: calculating the length of the head end of the continuous veneer to be cut according to the total length of the veneer; s400: and (3) starting rotary cutting, wherein when the length of the rotary-cut veneer reaches S, the cutter starts cutting, and then the cutter cuts every preset length l until the rotary cutting of the log is finished.
Optionally, in step S100, the size of the log to be rotary-cut is the radius of the log to be rotary-cut, and the minimum rotary-cut amount is the radius of the remaining wood core; in step S200, the total length L of the continuous bark after rotary cutting is calculated according to the following formula:
wherein, R represents the radius of the log to be rotary-cut, R represents the radius of the residual wood core, and d represents the rotary-cut thickness.
Further, in the step S300, the total length L of the continuous bark is divided by the predetermined length L of the single bark to be rounded, and the remainder after rounding is the length S of the head end to be cut; in the step S400, the moving distance of the veneer is calculated according to the moving speed V and the moving time t of the veneer in the conveying device.
Correspondingly, the invention also discloses a rotary cutting machine control system, which comprises the following units: the acquisition unit is used for acquiring the size, the minimum rotary cutting amount and the rotary cutting thickness of the log to be subjected to rotary cutting; the first calculating unit is used for calculating the total length of the continuous veneer after rotary cutting according to the size, the minimum rotary cutting amount and the rotary cutting thickness; the second calculating unit is used for calculating the length of the head end of the continuous veneer to be cut according to the total length of the veneer; and the cutting unit is used for starting rotary cutting, when the rotary-cut veneer length reaches S, the cutter starts cutting, and then the cutter cuts the veneer at intervals of preset length l until the rotary cutting of the log is finished.
The invention has the beneficial effects that: according to the method, the number of cutters to be cut (the maximum number of single veneers to be obtained) is calculated from the tail end of the veneer according to the pre-calculated total length of the veneer, so that the length S of the veneer to be cut at the head end after rotary cutting is started is obtained, and cutting is started when the length S reaches the position S. Through the method, the log skin sections with poor quality of the outer layer of the log are cut off (namely the surface layer wood skin with the length of S is cut off), so that the core layer wood skin with good quality is ensured not to be wasted, no core layer tail board is generated, and the acquisition rate of the high-quality wood skin is improved.
Drawings
Fig. 1A is a schematic view of the operation of the rotary cutting machine;
FIG. 1B is a schematic view of a prior art veneer cut;
FIG. 2 is a schematic size view of a log to be rotary cut;
FIG. 3 is a schematic diagram of the veneer cutting of the present invention;
FIG. 4 is a flow chart of a control method of the present invention;
fig. 5 is a block diagram of the control system of the present invention.
Detailed Description
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention when taken in conjunction with the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be to scale, emphasis instead being placed upon illustrating the principles of the invention.
The basic concept of the invention is to calculate the total length of the continuous veneer which can be cut by the log before rotary cutting, then calculate the maximum number of single veneers which can be cut by the continuous veneer from the tail end of the continuous veneer, calculate the length which the head end should cut according to the maximum number of the single veneers, cut the veneer with the length after the rotary cutting is started, and then cut according to the size requirement of the single veneer, thus ensuring that the size of the last veneer reaches the required size and the veneer of the log core layer is not wasted.
The rotary cutting principle will be described in detail with reference to fig. 2 and 3. The log cannot be completely cut into the bark in the rotary cutting process, a minimum rotary cutting amount exists, the minimum rotary cutting amount is the minimum size of the residual wood core after the rotary cutting is performed by the rotary cutting machine, the minimum rotary cutting amount can be represented by the radius R of the residual wood core, generally, the minimum rotary cutting amount of different rotary cutting machines is fixed, and the total length L of the bark after the rotary cutting can be calculated assuming that the radius of the log to be subjected to the rotary cutting is R and the rotary cutting thickness is d (namely the thickness of the bark after the rotary cutting).
Assuming that the length of a single veneer is L, the maximum number N of the cut single veneer can be calculated by dividing L by L, and the remainder after the rounding is the length S of the head end to be cut.
After the rotary cutting is started, when the rotary cut veneer length reaches S, the cutter starts cutting, so that the cutting of the head end is finished, and then the cutter cuts every preset length l until the final cutting is finished.
The invention changes the starting reference point of the traditional cutter from the head end to the tail end, thereby ensuring the size requirement of the tail plate and avoiding the waste of the tail plate.
Example 1
Referring to fig. 4, the rotary cutting machine control method of the present invention through the above analysis may include the following steps.
S100: and obtaining the size, the minimum rotary cutting amount and the rotary cutting thickness of the log to be subjected to rotary cutting.
Specifically, for example, after the log is placed in the rotary cutter, the diameter of the log is obtained by measuring the distance between two clamping rods for clamping the log, and half of the diameter is the radius R, or the size data of the log can be obtained by using detection elements such as infrared and photoelectric detection elements. The minimum rotary cutting amount is related to the mechanism and parameter setting of the machine for different rotary cutting machines, and is usually fixed known data. The rotary cutting thickness reflects the thickness of the veneer after rotary cutting, and for a rotary cutting machine, the rotary cutting thickness is usually adjustable, and the width of a cutter seam of the rotary cutting machine is adjusted according to the thickness of the veneer to be obtained, so that the rotary cutting thickness can be adjusted, and the veneers with different thicknesses can be obtained.
S200: and calculating the total length of the continuous veneer after rotary cutting according to the size, the minimum rotary cutting amount and the rotary cutting thickness.
Assuming that the size of the log is represented by the radius R of the log, the minimum rotary cut amount is represented by the remaining core radius R, and the rotary cut thickness d is a preset value of the rotary cutter, L can be calculated.
S300: and calculating the length S of the head end to be cut according to the total length of the veneer.
And (3) calculating the maximum cut single veneer number N by dividing L by the preset length L of the single veneer, wherein the rounded remainder is the length S of the head end to be cut.
S400: and (3) starting rotary cutting, wherein when the length of the rotary-cut veneer reaches S, the cutter starts cutting, and then the cutter cuts every preset length l until the rotary cutting of the log is finished.
Specifically, in this step, the moving speed V of the peeled veneer in the conveyor may be detected by the speed detector, and the moving distance may be calculated from the moving speed V and the moving time t, and the moving distance is the peeled veneer length, i.e., S ═ V × t.
Through the method, the log skin sections with poor quality of the outer layer of the log are cut off (namely the surface layer wood skin with the length of S is cut off), so that the core layer wood skin with good quality is ensured not to be wasted, no core layer tail board is generated, and the acquisition rate of the high-quality wood skin is improved.
Example 2
Accordingly, as shown in fig. 5, the present invention also discloses a rotary cutting machine control system, comprising the following units: the acquisition unit is used for acquiring the size, the minimum rotary cutting amount and the rotary cutting thickness of the log to be subjected to rotary cutting; the first calculating unit is used for calculating the total length of the continuous veneer after rotary cutting according to the size, the minimum rotary cutting amount and the rotary cutting thickness; the second calculating unit is used for calculating the length of the head end of the continuous veneer to be cut according to the total length of the veneer; and the cutting unit is used for starting rotary cutting, when the rotary-cut veneer length reaches S, the cutter starts cutting, and then the cutter cuts the veneer at intervals of preset length l until the rotary cutting of the log is finished.
Further, in the obtaining unit, the size of the log to be rotary-cut is a radius of the log to be rotary-cut, and the minimum rotary-cut amount is a radius of the remaining wood core. The first calculating unit calculates the total length L of the rotary-cut continuous veneer according to the following formula:
wherein, R represents the radius of the log to be rotary-cut, R represents the radius of the residual wood core, and d represents the rotary-cut thickness.
Optionally, the second calculating unit divides the total length L of the continuous bark by the predetermined length L of the single bark to obtain a whole, and a remainder after the whole is a length S that the head end should be cut. And the cutting unit calculates the moving distance of the veneer according to the moving speed V and the moving time t of the veneer in the conveying device.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A rotary cutting machine control method, comprising the steps of:
s100: obtaining the size, the minimum rotary cutting amount and the rotary cutting thickness of a log to be subjected to rotary cutting;
s200: calculating the total length of the continuous veneer after rotary cutting according to the size, the minimum rotary cutting amount and the rotary cutting thickness;
s300: calculating the length of the head end of the continuous veneer to be cut according to the total length of the veneer;
s400: and (3) starting rotary cutting, wherein when the length of the rotary-cut veneer reaches S, the cutter starts cutting, and then the cutter cuts every preset length l until the rotary cutting of the log is finished.
2. The control method according to claim 1, wherein in step S100, the dimension of the log to be rotary-cut is a radius of the log to be rotary-cut, and the minimum rotary-cut amount is a remaining core radius.
3. The control method according to claim 1, wherein in step S200, the total length L of the continuous barks after rotary cutting is calculated according to the following formula:
wherein, R represents the radius of the log to be rotary-cut, R represents the radius of the residual wood core, and d represents the rotary-cut thickness.
4. The control method according to claim 1, wherein in step S300, the total length L of the continuous bark is divided by the predetermined length L of the single bark, and the integer is the length S of the head end to be cut.
5. The control method according to claim 1, wherein in step S400, the moving distance of the veneer is calculated according to the moving speed V and the moving time t of the veneer in the conveying device.
6. A rotary cutting machine control system, characterized by comprising the following units:
the acquisition unit is used for acquiring the size, the minimum rotary cutting amount and the rotary cutting thickness of the log to be subjected to rotary cutting;
the first calculating unit is used for calculating the total length of the continuous veneer after rotary cutting according to the size, the minimum rotary cutting amount and the rotary cutting thickness;
the second calculating unit is used for calculating the length of the head end of the continuous veneer to be cut according to the total length of the veneer;
and the cutting unit is used for starting rotary cutting, when the rotary-cut veneer length reaches S, the cutter starts cutting, and then the cutter cuts the veneer at intervals of preset length l until the rotary cutting of the log is finished.
7. The control system of claim 6, wherein the size of the log to be rotary cut in the obtaining unit is a radius of the log to be rotary cut, and the minimum rotary cut amount is a remaining core radius.
8. The control system according to claim 6, wherein the first calculating unit calculates a total length L of the continuous barks after rotary cutting according to the following formula:
wherein, R represents the radius of the log to be rotary-cut, R represents the radius of the residual wood core, and d represents the rotary-cut thickness.
9. The control system of claim 6, wherein the second calculation unit is configured to divide the total length L of the consecutive barks by the predetermined length L of a single bark to obtain a whole number, and the whole number is the length S of the head end to be cut.
10. The control system according to claim 6, wherein the cutting unit calculates the moving distance of the veneer according to the moving speed V and the moving time t of the veneer in the conveying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713786.7A CN111975915A (en) | 2020-07-22 | 2020-07-22 | Rotary cutter control method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713786.7A CN111975915A (en) | 2020-07-22 | 2020-07-22 | Rotary cutter control method and system |
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| Publication Number | Publication Date |
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| CN111975915A true CN111975915A (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010713786.7A Pending CN111975915A (en) | 2020-07-22 | 2020-07-22 | Rotary cutter control method and system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060162816A1 (en) * | 2003-09-26 | 2006-07-27 | Raute Oyj | Method for peeling veneer from logs |
| CN102729304A (en) * | 2012-06-18 | 2012-10-17 | 欧瑞传动电气有限公司 | End cutter one-piece rotary-cut method for clamping-free rotary-cut machine |
| CN206733203U (en) * | 2017-05-10 | 2017-12-12 | 漳州市炯辉机械有限公司 | A kind of uniform peeler of thin plate length |
| CN208020425U (en) * | 2018-03-13 | 2018-10-30 | 江苏名乐地板有限公司 | A kind of wood single-plate rotary-cut drive end unit rotary-cut conveying mechanism |
| CN111168794A (en) * | 2020-01-17 | 2020-05-19 | 深圳市东力科创技术有限公司 | Control method and device for tail cutter whole rotary cutting of rotary cutter frequency converter |
-
2020
- 2020-07-22 CN CN202010713786.7A patent/CN111975915A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060162816A1 (en) * | 2003-09-26 | 2006-07-27 | Raute Oyj | Method for peeling veneer from logs |
| CN102729304A (en) * | 2012-06-18 | 2012-10-17 | 欧瑞传动电气有限公司 | End cutter one-piece rotary-cut method for clamping-free rotary-cut machine |
| CN206733203U (en) * | 2017-05-10 | 2017-12-12 | 漳州市炯辉机械有限公司 | A kind of uniform peeler of thin plate length |
| CN208020425U (en) * | 2018-03-13 | 2018-10-30 | 江苏名乐地板有限公司 | A kind of wood single-plate rotary-cut drive end unit rotary-cut conveying mechanism |
| CN111168794A (en) * | 2020-01-17 | 2020-05-19 | 深圳市东力科创技术有限公司 | Control method and device for tail cutter whole rotary cutting of rotary cutter frequency converter |
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Application publication date: 20201124 |