CA2480976A1 - System for positioning a workpiece - Google Patents
System for positioning a workpiece Download PDFInfo
- Publication number
- CA2480976A1 CA2480976A1 CA 2480976 CA2480976A CA2480976A1 CA 2480976 A1 CA2480976 A1 CA 2480976A1 CA 2480976 CA2480976 CA 2480976 CA 2480976 A CA2480976 A CA 2480976A CA 2480976 A1 CA2480976 A1 CA 2480976A1
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- Prior art keywords
- workpiece
- mark
- identifying means
- orientation
- optimized position
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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
- B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
- B27B31/06—Adjusting equipment, e.g. using optical projection
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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
- B27B31/00—Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
- B27B31/04—Turning equipment
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Spray Control Apparatus (AREA)
Abstract
A system for positioning a workpiece in an optimized position wherein a marking device places a mark on the workpiece prior to the workpiece passing through an optimizer, the optimizer determining the optimized position of the workpiece while the orientation of the mark is identified by a first identifying means as a point of reference such that the workpiece may be positioned in the optimized position by rotating the workpiece relative to the orientation of the mark. A turning mechanism rotates the workpiece to position it in the optimized position. A
second and third identifying means continually identifies at predetermined time intervals the orientation of the mark while the workpiece is being rotated. A processor in transmittable communication with the optimizer, the first identifying means, and the second identifying means compares the real time orientation of the mark with the optimized position to determine if the workpiece is in the optimized position. The processor transmits information to the turning mechanism to control the rotation of the workpiece such that the optimized position of the workpiece may be achieved and maintained.
second and third identifying means continually identifies at predetermined time intervals the orientation of the mark while the workpiece is being rotated. A processor in transmittable communication with the optimizer, the first identifying means, and the second identifying means compares the real time orientation of the mark with the optimized position to determine if the workpiece is in the optimized position. The processor transmits information to the turning mechanism to control the rotation of the workpiece such that the optimized position of the workpiece may be achieved and maintained.
Description
SYSTEM FOR POSLTIONING A WORKPIECE
Field of the Invention This invention relates to the field of devices for positioning a workpiece in a sawmill, and more particularly, it relates to a system for positioning a workpiece.into an optimized position to produce the highest value or yield of lumber.
Background of the Invention Log turners, which are also known as "flying log turners", typically comprise a pair of elongated vertically oriented spiked rolls which are located on each side of a transporting conveyor. The log turner rotates a workpiece, such as a log or a cant, as the workpiece travels towards the primary breakdown machines, such as a gang saw. The spiked rolls of the log turner are movable laterally towards and away from the centreline of a workpiece, longitudinally along the length of the workpiece in an open-and-close operation, and vertically upwards and downwards to engage, manipulate, and rotate the workpiece.
As a workpiece travels along the conveyor en route to the primary breakdown 2 0 machines, a an optimizer, using data from a scanner, determines an optimized position of the workpiece such that the workpiece, when processed in accordance with the desired angular rotation of the optimized position, may generate the highest value or yield of lumber. To position the workpiece in the optimized position, motion control data generated by the s optimizer and associated programmable logic controller (PLC) initiates movement of the log turner to rotate the 2 5 workpiece in order to attain the optimized position. Lateral and longitudinal displacement of the spiked turning mils brings the rolls into contact with the surfarce of the workpiece. The vertical displacement of each spiked roll allows the workpiece to be rotated about its longitudinal axis.
The log turner rotates the workpiece until the optimized position is achieved.
During the turning process, surface irregularities such as protruding knots or indentations on the surface of the workpiece may affect proper contact of the spiked rolls with the workpiece, thereby inhibiting proper rotation of the workpiece to position it in the optimized position. This turning inaccuracy results in a significant reduction in lumber recovery.
Furthermore, even if the optimized position is achieved, movement of the transport conveyor on which the workpiece travels may not maintain the workpiece in the optimized position. Precision in workpiece rotation and workpiece positioning is made even more difficult given the speed at which the log turner performs its function. By providing a system to improve the accuracy of workpiece positioning, lumber volume and value will thereby increase.
Summary of the Invention It is an object of the present invention to provide a system of positioning a workpiece into an optimized position whereby rotational accuracy of a workpiece may be monitored, maintained, and/or corrected so that positional or rotational errors at primary breakdown may be avoided, thereby improving overall lumber recovery.
It is another object of the present invention to provide a marking device to place a mark on an end of the workpiece to assist the system in monitoring, maintaining, and/or correcting 2 0 the position of the workpiece such that the optimized position may be achieved and maintained.
It is another object of the present invention to provide a means for identifying the orientation of the mark in real-rime as the workpiece is transported through the turning mechanism such that any necessary corrective angular repositioning may be timely performed to ensure that 2 5 the orientation of the mark prior to the workpiece leaving the turning mechanism coincides with the optimized position of the workpiece.
It is another object of the present invention to provide a evaluator to determine in real-time if there are any positional differences between the orientation of the mark and the optimized position while the workpiece is being rotated and transported towards the primary breakdown machine.
It is a further object of this invention to provide a mechanism for transmitting corrective positioning information to control the operation of the turning mechanism to adjust the position of the workpiece such that the optimized position may be achieved and maintained.
The present invention is a system for positioning a workpiece into an optimized position. The system includes a marking device adapted to place a mark on the workpiece prior to the workpiece passing through an optimizer. A first identifying means identifies the orientation of the mark as a point of reference such that the workpiece may be positioned into the workpiece's optimized position by rotating the workpiece relative to the orientation of the mark. A turning mechanism rotates the workpiece. A second identifying means identifies the orientation of the mark while the workpia:e is being rotated. An optimizer or other processor receives information from the first identifying means and from the second identifying means to determine if the workpiece is in the optimized position. A PLC or other processor controls rotation of the 2 0 workpiece such that the optimized position of the workpiece may be achieved.
The marking device may be a spray paint marking device for placing a spray paint line on an end of the workpiece. A first earners identifies the orientation of the mark. This may be prior to the workpiece exiting the optimizer. The optimizer determines the optimized position of 2 5 the workpiece. A workpiece turning mechanism such as one including a pair of turning rolls, one tuzning roll on each side of a conveyor, rotates the workpiece to its optimized position. The turning rolls may be spiked to grasp the workpiece without slipping. The turning rolls may also displace horizontally to engage the workpiece. They may also rotate about a vertical axis to assist in transporting the workpiece along the conveyor. The pair of t<unir~g rolls displace vertically relative to one another, upwards and downwards, causing the workpiece to rotate where sandwiched between the rolls. A second camera may be positioned within the turning mechanism.
A third camera. may be positioned adjacent to the turning mechanism. The second and third cameras identify the orientation of the mark in real-time, continually or at predetermined time intervals while the workpiece is being rotated. The real time orientation of the mark is transmitted to the processor which compares the real time orientation of the mark with the desired optimized position of the workpiece to determine if the workpiece is in the optimized position. To position or maintain the workpiece in the optimized position, the processor transmits information to the turning mechanism to control rotation of the workpiece such that the optimized position of the workpiece may be achieved and maintained.
Brief Description of the Drawin ~~s Various other objects, features and attendant advantages of the present invention will become fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein:
Figure 1 is a detailed plan view of the infeed, scanner/optimizer; conveyor and fuming roll portions of the present invention;
Figure 1 a is a schematic plan view of the present invention;
Figure 2 is a detailed side elevational view of the invention illustrated in Figure 1;
Figure 3 is an enlarged plan view of a portion of the turning roll mechanism;
Field of the Invention This invention relates to the field of devices for positioning a workpiece in a sawmill, and more particularly, it relates to a system for positioning a workpiece.into an optimized position to produce the highest value or yield of lumber.
Background of the Invention Log turners, which are also known as "flying log turners", typically comprise a pair of elongated vertically oriented spiked rolls which are located on each side of a transporting conveyor. The log turner rotates a workpiece, such as a log or a cant, as the workpiece travels towards the primary breakdown machines, such as a gang saw. The spiked rolls of the log turner are movable laterally towards and away from the centreline of a workpiece, longitudinally along the length of the workpiece in an open-and-close operation, and vertically upwards and downwards to engage, manipulate, and rotate the workpiece.
As a workpiece travels along the conveyor en route to the primary breakdown 2 0 machines, a an optimizer, using data from a scanner, determines an optimized position of the workpiece such that the workpiece, when processed in accordance with the desired angular rotation of the optimized position, may generate the highest value or yield of lumber. To position the workpiece in the optimized position, motion control data generated by the s optimizer and associated programmable logic controller (PLC) initiates movement of the log turner to rotate the 2 5 workpiece in order to attain the optimized position. Lateral and longitudinal displacement of the spiked turning mils brings the rolls into contact with the surfarce of the workpiece. The vertical displacement of each spiked roll allows the workpiece to be rotated about its longitudinal axis.
The log turner rotates the workpiece until the optimized position is achieved.
During the turning process, surface irregularities such as protruding knots or indentations on the surface of the workpiece may affect proper contact of the spiked rolls with the workpiece, thereby inhibiting proper rotation of the workpiece to position it in the optimized position. This turning inaccuracy results in a significant reduction in lumber recovery.
Furthermore, even if the optimized position is achieved, movement of the transport conveyor on which the workpiece travels may not maintain the workpiece in the optimized position. Precision in workpiece rotation and workpiece positioning is made even more difficult given the speed at which the log turner performs its function. By providing a system to improve the accuracy of workpiece positioning, lumber volume and value will thereby increase.
Summary of the Invention It is an object of the present invention to provide a system of positioning a workpiece into an optimized position whereby rotational accuracy of a workpiece may be monitored, maintained, and/or corrected so that positional or rotational errors at primary breakdown may be avoided, thereby improving overall lumber recovery.
It is another object of the present invention to provide a marking device to place a mark on an end of the workpiece to assist the system in monitoring, maintaining, and/or correcting 2 0 the position of the workpiece such that the optimized position may be achieved and maintained.
It is another object of the present invention to provide a means for identifying the orientation of the mark in real-rime as the workpiece is transported through the turning mechanism such that any necessary corrective angular repositioning may be timely performed to ensure that 2 5 the orientation of the mark prior to the workpiece leaving the turning mechanism coincides with the optimized position of the workpiece.
It is another object of the present invention to provide a evaluator to determine in real-time if there are any positional differences between the orientation of the mark and the optimized position while the workpiece is being rotated and transported towards the primary breakdown machine.
It is a further object of this invention to provide a mechanism for transmitting corrective positioning information to control the operation of the turning mechanism to adjust the position of the workpiece such that the optimized position may be achieved and maintained.
The present invention is a system for positioning a workpiece into an optimized position. The system includes a marking device adapted to place a mark on the workpiece prior to the workpiece passing through an optimizer. A first identifying means identifies the orientation of the mark as a point of reference such that the workpiece may be positioned into the workpiece's optimized position by rotating the workpiece relative to the orientation of the mark. A turning mechanism rotates the workpiece. A second identifying means identifies the orientation of the mark while the workpia:e is being rotated. An optimizer or other processor receives information from the first identifying means and from the second identifying means to determine if the workpiece is in the optimized position. A PLC or other processor controls rotation of the 2 0 workpiece such that the optimized position of the workpiece may be achieved.
The marking device may be a spray paint marking device for placing a spray paint line on an end of the workpiece. A first earners identifies the orientation of the mark. This may be prior to the workpiece exiting the optimizer. The optimizer determines the optimized position of 2 5 the workpiece. A workpiece turning mechanism such as one including a pair of turning rolls, one tuzning roll on each side of a conveyor, rotates the workpiece to its optimized position. The turning rolls may be spiked to grasp the workpiece without slipping. The turning rolls may also displace horizontally to engage the workpiece. They may also rotate about a vertical axis to assist in transporting the workpiece along the conveyor. The pair of t<unir~g rolls displace vertically relative to one another, upwards and downwards, causing the workpiece to rotate where sandwiched between the rolls. A second camera may be positioned within the turning mechanism.
A third camera. may be positioned adjacent to the turning mechanism. The second and third cameras identify the orientation of the mark in real-time, continually or at predetermined time intervals while the workpiece is being rotated. The real time orientation of the mark is transmitted to the processor which compares the real time orientation of the mark with the desired optimized position of the workpiece to determine if the workpiece is in the optimized position. To position or maintain the workpiece in the optimized position, the processor transmits information to the turning mechanism to control rotation of the workpiece such that the optimized position of the workpiece may be achieved and maintained.
Brief Description of the Drawin ~~s Various other objects, features and attendant advantages of the present invention will become fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein:
Figure 1 is a detailed plan view of the infeed, scanner/optimizer; conveyor and fuming roll portions of the present invention;
Figure 1 a is a schematic plan view of the present invention;
Figure 2 is a detailed side elevational view of the invention illustrated in Figure 1;
Figure 3 is an enlarged plan view of a portion of the turning roll mechanism;
Figure 4 is a sectional view taken on line 4-4 of Figure 3; and Figure 5 is an enlarged view of a portion of Figure 3.
Detailed Description of Embodimen~~ of the Invention With reference to the Figures wherein similar characters of reference denote corresponding parts in each view, a system 10 according to the present invention includes a scanner/optimizer 15, a processor 20, a marking device 25, a first and a second mark orientation identifying means 30 and 35, and a turning mechanism 40.
As seen in Figures 1 and 1 a, a plurality of workpieces 5 located on an infeed 12 are transported by suitable means, such as a chainway, in downstream direction of flow A towards a conveyor 14. Marking device 25 positionable along infeed 12 is adapted to place a mark 28 on each workpiece 5. Alternatively, marking device 25 may be positionable along conveyor 14 so that marking device 25 places mark 28 on workpiece S prior to workpiece 5 passing through scanner/optimizer I5. In a preferred embodiment, not intended to be limiting, marking device 25 is a spray paint marking device for placing a visually observable spray paint line on an end 7 of 2 0 workpiece 5. Alternatively, marking device 25 may be a cutting means for making a superficial visual cut mark on end 7 of workpiece 5. It will be recognized that there are many different marking devices within the scope of the present invention that may be used to provide a mark on workpiece 5 as a reference point to provide information regarding the position of workpiece 5.
2 5 Workpieces 5, which are marked on ends 7, are then transported on conveyor 14 in downstream direction B towards and through scanner/optimizer 15.
Scanner/optimizer 1 S detects, analyzes, and classifies the geometrical information and surface characteristics of each workpiece 5 and determines an optimized cutting solution to obtain optimal lumber production from each workpiece 5. Based on the optimized cutting solution, scanner/optimizer 15 calculates an optimized position for each workpiece 5 such that workpiece 5 may be rotatedinto its position prior to processing. The optimizer may determine the optimized position of workpiece 5 simultaneously with first identifying means 30 identifying the orientation of mark 28 on end 7 of workpiece 5. In one embodiment, first identifying means 30 is a first camera positionable adjacent to and in proximity with scanner/optimizer 15 such that end 7 of workpiece S
may be photographed or scanned prior to end 7 passing through scanner/optimizer 15.
Data relating to the orientation of mark 28 identified by first identifying means 30 is then transmitted to processor 20.
The optimized position calculated by scanner/optimizer 15 is also transmitted to processor 20.
Typically, processor 20 is a computer or a PLC system capable of controlling turning mechanism 40 to rotate and position workpiece 5 into its optimized position. The orientation and position of mark 28 identified by first identifying means 30 serves as a reference point to assist processor 20 in controlling the rotation of fuming mechanism 40 to position workpiece 5 in the optimized position, as described below.
As seen in Figures 3 to 5, turning mechanism 40 comprises a plurality of turning rolls 45 located on each side of conveyor 14. Turning rolls 45 are typically spiked to enable turning rolls 4S to engage the surface of workpiece 5 to rotate workpiece 5.
As seen in Figuxe 3, only two pairs of turning rolls 45, one pair on each side of conveyor 14, are illustrated and is not 2 0 intended to be limiting as two turning rolls 45, one on each side of conveyor 14, or four or more even numbered pairs of turning mlls 45 may be employed. Each pair of turning rolls 45 may simultaneously rotate about their vertical axis C and/or displace in direction D laterally of the direction of flow B, towards and away from the centreline of workpiece 5.
Rotation of turning rolls 45 about vertical axis C assists with the transport of workpiece 5 along conveyor 14. Lateral 2 5 displacement of turning rolls 45 in direction B allows turning rolls 45 to engage the surface of workpiece 5 of varying widths. To rotate workpiece 5, turning rolls 45 may also independently displace vertically upwards and downwards in direction E along their corresponding vertical axes C, to thereby rotate workpiece 22 in a clockwise or counter-clockwise direction, as shown by arrow F. Turning rolls 45 are actuated by conventional actuator means such as hydraulic means while the rotational, lateral, and vertical movement of turning rolls 45 are controlled by processor 20. Processor 20 transmits information by conventional means to turning mechanism 40 to control actuation of rolls 45 so as to selectively rotate and position workpiece 5 into the optimized position.
Second identifying means 35 is adapted to monitor the position of mark 28 as workpiece 5 is rotated by turning mechanism 40. Second identifying means 35 may include a second camera, wherein the second camera is mounted within turning mechanism 40. In another embodiment, at least two second identifying means 35 are mounted within turning mechanism 40, .
as seen in Figure 3. A third identifying means 50, in a preferred embodiment including a third camera, is positioned along conveyor 14 where workpiece 5 exits turning mechanism 40. For simplicity, and not intending to be limiting, only a single second identifying means 35 and a single third identifying means 50 are illustrated in Figure la.
Second and third identifying means 35 and 50 identify the orientation of mark continually or at predetermined time intervals, such as every 5 seconds, and transmits such real time information of the orientation of mark 28 to processor 20. Processor 20 performs an evaluation in real time of any positional differences between the desired optimized position of 2 0 workpiece 5 and the real time position of workpiece 5, as indicated by reference to the orientation of mark 28. If the orientation of mark 28 indicates that workpiece 5 is not in the optimized position, processor 20 calculates the required angular rotation of workpiece 5 into position workpiece 5 in the optimized position and transmits such corrective information to turning mechanism 40. Any positional errors of workpiece 5 are thus corrected on a continual basis until 2 5 workpiece 5 exits turning mechanism 40. If the orientation of mark 28 indicates workpiece 5 is in the optimized position, processor 20 and turning mechanism 40 cooperates to maintain workpiece 5 in the optimized position by making any necessary adjustments if workpiece 5 is displaced, for example, by the movement of conveyor 14.
Detailed Description of Embodimen~~ of the Invention With reference to the Figures wherein similar characters of reference denote corresponding parts in each view, a system 10 according to the present invention includes a scanner/optimizer 15, a processor 20, a marking device 25, a first and a second mark orientation identifying means 30 and 35, and a turning mechanism 40.
As seen in Figures 1 and 1 a, a plurality of workpieces 5 located on an infeed 12 are transported by suitable means, such as a chainway, in downstream direction of flow A towards a conveyor 14. Marking device 25 positionable along infeed 12 is adapted to place a mark 28 on each workpiece 5. Alternatively, marking device 25 may be positionable along conveyor 14 so that marking device 25 places mark 28 on workpiece S prior to workpiece 5 passing through scanner/optimizer I5. In a preferred embodiment, not intended to be limiting, marking device 25 is a spray paint marking device for placing a visually observable spray paint line on an end 7 of 2 0 workpiece 5. Alternatively, marking device 25 may be a cutting means for making a superficial visual cut mark on end 7 of workpiece 5. It will be recognized that there are many different marking devices within the scope of the present invention that may be used to provide a mark on workpiece 5 as a reference point to provide information regarding the position of workpiece 5.
2 5 Workpieces 5, which are marked on ends 7, are then transported on conveyor 14 in downstream direction B towards and through scanner/optimizer 15.
Scanner/optimizer 1 S detects, analyzes, and classifies the geometrical information and surface characteristics of each workpiece 5 and determines an optimized cutting solution to obtain optimal lumber production from each workpiece 5. Based on the optimized cutting solution, scanner/optimizer 15 calculates an optimized position for each workpiece 5 such that workpiece 5 may be rotatedinto its position prior to processing. The optimizer may determine the optimized position of workpiece 5 simultaneously with first identifying means 30 identifying the orientation of mark 28 on end 7 of workpiece 5. In one embodiment, first identifying means 30 is a first camera positionable adjacent to and in proximity with scanner/optimizer 15 such that end 7 of workpiece S
may be photographed or scanned prior to end 7 passing through scanner/optimizer 15.
Data relating to the orientation of mark 28 identified by first identifying means 30 is then transmitted to processor 20.
The optimized position calculated by scanner/optimizer 15 is also transmitted to processor 20.
Typically, processor 20 is a computer or a PLC system capable of controlling turning mechanism 40 to rotate and position workpiece 5 into its optimized position. The orientation and position of mark 28 identified by first identifying means 30 serves as a reference point to assist processor 20 in controlling the rotation of fuming mechanism 40 to position workpiece 5 in the optimized position, as described below.
As seen in Figures 3 to 5, turning mechanism 40 comprises a plurality of turning rolls 45 located on each side of conveyor 14. Turning rolls 45 are typically spiked to enable turning rolls 4S to engage the surface of workpiece 5 to rotate workpiece 5.
As seen in Figuxe 3, only two pairs of turning rolls 45, one pair on each side of conveyor 14, are illustrated and is not 2 0 intended to be limiting as two turning rolls 45, one on each side of conveyor 14, or four or more even numbered pairs of turning mlls 45 may be employed. Each pair of turning rolls 45 may simultaneously rotate about their vertical axis C and/or displace in direction D laterally of the direction of flow B, towards and away from the centreline of workpiece 5.
Rotation of turning rolls 45 about vertical axis C assists with the transport of workpiece 5 along conveyor 14. Lateral 2 5 displacement of turning rolls 45 in direction B allows turning rolls 45 to engage the surface of workpiece 5 of varying widths. To rotate workpiece 5, turning rolls 45 may also independently displace vertically upwards and downwards in direction E along their corresponding vertical axes C, to thereby rotate workpiece 22 in a clockwise or counter-clockwise direction, as shown by arrow F. Turning rolls 45 are actuated by conventional actuator means such as hydraulic means while the rotational, lateral, and vertical movement of turning rolls 45 are controlled by processor 20. Processor 20 transmits information by conventional means to turning mechanism 40 to control actuation of rolls 45 so as to selectively rotate and position workpiece 5 into the optimized position.
Second identifying means 35 is adapted to monitor the position of mark 28 as workpiece 5 is rotated by turning mechanism 40. Second identifying means 35 may include a second camera, wherein the second camera is mounted within turning mechanism 40. In another embodiment, at least two second identifying means 35 are mounted within turning mechanism 40, .
as seen in Figure 3. A third identifying means 50, in a preferred embodiment including a third camera, is positioned along conveyor 14 where workpiece 5 exits turning mechanism 40. For simplicity, and not intending to be limiting, only a single second identifying means 35 and a single third identifying means 50 are illustrated in Figure la.
Second and third identifying means 35 and 50 identify the orientation of mark continually or at predetermined time intervals, such as every 5 seconds, and transmits such real time information of the orientation of mark 28 to processor 20. Processor 20 performs an evaluation in real time of any positional differences between the desired optimized position of 2 0 workpiece 5 and the real time position of workpiece 5, as indicated by reference to the orientation of mark 28. If the orientation of mark 28 indicates that workpiece 5 is not in the optimized position, processor 20 calculates the required angular rotation of workpiece 5 into position workpiece 5 in the optimized position and transmits such corrective information to turning mechanism 40. Any positional errors of workpiece 5 are thus corrected on a continual basis until 2 5 workpiece 5 exits turning mechanism 40. If the orientation of mark 28 indicates workpiece 5 is in the optimized position, processor 20 and turning mechanism 40 cooperates to maintain workpiece 5 in the optimized position by making any necessary adjustments if workpiece 5 is displaced, for example, by the movement of conveyor 14.
In interpreting both this specification and the claims that follow, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, camponents, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced.
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims. v
As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims. v
Claims (20)
1. A system for positioning a workpiece in an optimized position, the system comprising:
a marking device adapted to place a mark on a workpiece prior to said workpiece passing through an optimizer, said optimizer determining the optimized position of said workpiece;
a first identifying means for identifying an orientation of said mark as a point of reference such that said workpiece may be positioned in the optimized position by rotating said workpiece relative to said orientation;
a turning mechanism for rotating said workpiece;
a second identifying means for identifying said orientation of said mark while said workpiece is being rotated; and a processor adapted to receive information from said optimizer, said first identifying means, and said second identifying means to determine if said workpiece is in the optimized position, said processor further adapted to control rotation of said workpiece until said workpiece is in the optimized position.
a marking device adapted to place a mark on a workpiece prior to said workpiece passing through an optimizer, said optimizer determining the optimized position of said workpiece;
a first identifying means for identifying an orientation of said mark as a point of reference such that said workpiece may be positioned in the optimized position by rotating said workpiece relative to said orientation;
a turning mechanism for rotating said workpiece;
a second identifying means for identifying said orientation of said mark while said workpiece is being rotated; and a processor adapted to receive information from said optimizer, said first identifying means, and said second identifying means to determine if said workpiece is in the optimized position, said processor further adapted to control rotation of said workpiece until said workpiece is in the optimized position.
2. The system of claim 1 wherein said marking device is a spray paint marking device far placing a visual spray paint line on an end of said workpiece.
3. The system of claim 2 wherein said first identifying means is a camera positionable adjacent to said optimizer such that said orientation of said mark may be identified prior to said workpiece exiting said optimizer, said first identifying means and said optimizer in transmittable communication with said processor.
4. The system of claim 3 wherein said turning mechanism comprises at least two turning rolls, at least one of said turning rolls positioned on each side of a conveyor, said turning rolls adapted to engage and rotate said workpiece.
5. The system of claim 3 wherein said turning mechanism comprises at least two pairs of turning rolls, a pair of said tuning rolls positioned on each side of a conveyor, said turning rolls adapted to engage and rotate said workpiece.
6. The system of one of claims 4 or 5 wherein said turning rolls are spiked to enable said turning rolls to grasp said workpiece.
7. The system of claim 6 wherein said turning rolls displace horizontally towards and away from said workpiece to engage said workpiece and rotate about a vertical axis to assist in transporting said workpiece along said conveyor.
8. The system of claim 7 wherein said turning rolls displace vertically upwards and downwards along said vertical axis to rotate said workpiece.
9. The system of claim 8 further comprising a third identifying means for identifying said orientation of said mark while said workpiece is being rotated.
10. The system of claim 9 wherein said second and said third identifying means are cameras, said second identifying means positionable within Said turning mechanism and said third identifying means positionable adjacent to said turning mechanism such that said orientation of said mark may be photographed prior to said workpiece exiting said turning mechanism, said second and said third identifying means in transmittable communication with said processor.
11. The system of claim 10 wherein said second and said third identifying means are adapted to continually identify said orientation of said mark at predetermined time intervals and transmit said identification to said processor in real time.
12. The system of claim 11 wherein said processor compares said orientation of said mark in real time with the optimized position to determine if said workpiece requires further rotation prior to exiting said turning mechanism to position said workpiece in the optimized position.
13. The system of claim 12 wherein said processor transmits information to said turning mechanism to control rotation of said workpiece such that the optimized position of said workpiece may be achieved and maintained.
14. A system for positioning a workpiece in an optimized position, the system comprising:
a spray paint marking device for placing a visual spray paint line on an end of said workpiece prior to said workpiece passing through an optimizer, said optimizer determining the optimized position of said workpiece;
a first camera for identifying an orientation of said mark as a point of reference such that said workpiece may positioned in the optimized position by rotating said workpiece relative to said orientation;
a turning mechanism having at least two pairs of spiked turning rolls, one pair of said spiked turning rolls positioned on each side of a conveyor, said spiked turning rolls adapted to grasp and rotate said workpiece;
a second and a third identifying means for identifying said orientation of said mark while said workpiece is being rotated; and a processor adapted to receive information from said optimizer, said first identifying means, and said second identifying means to determine if said workpiece is in the optimized position by comparing said orientation of said mark with the optimized position to determine, said processor further adapted to transmit control information to said turning mechanism to rotate said workpiece until said workpiece is in the optimized position.
a spray paint marking device for placing a visual spray paint line on an end of said workpiece prior to said workpiece passing through an optimizer, said optimizer determining the optimized position of said workpiece;
a first camera for identifying an orientation of said mark as a point of reference such that said workpiece may positioned in the optimized position by rotating said workpiece relative to said orientation;
a turning mechanism having at least two pairs of spiked turning rolls, one pair of said spiked turning rolls positioned on each side of a conveyor, said spiked turning rolls adapted to grasp and rotate said workpiece;
a second and a third identifying means for identifying said orientation of said mark while said workpiece is being rotated; and a processor adapted to receive information from said optimizer, said first identifying means, and said second identifying means to determine if said workpiece is in the optimized position by comparing said orientation of said mark with the optimized position to determine, said processor further adapted to transmit control information to said turning mechanism to rotate said workpiece until said workpiece is in the optimized position.
15. The system of claim 14 wherein said first camera is positionable adjacent to said optimizer such that said orientation of said mark may be identified prior to said workpiece exiting said optimizer, said first identifying means in transmittable communication with said processor.
16. The system of claim 15 wherein said turning rolls displace horizontally towards and away from said workpiece to engage said workpiece and rotate about a vertical axis to assist in transporting said workpiece along said conveyor.
17. The system of claim 16 wherein said turning rolls displace vertically upwards and downwards along said vertical axis to rotate said workpiece.
18. The system of claim 17 wherein said second identifying means is positionable within said turning mechanism and said third identifying means is positionable adjacent to said fuming means such that said orientation of said mark may be photographed prior to said workpiece exiting said turning mechanism, said second and said third identifying means in transmittable communication with said processor.
19. The system of claim 18 wherein said second and said third identifying means are adapted to continually identify said orientation of said mark at predetermined time intervals and transmit said identification to said processor in real time.
20. The system of claim 19 wherein said processor transmits information to said turning mechanism to control rotation of said workpiece such that the optimized position of said workpiece may be achieved and maintained.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2480976 CA2480976A1 (en) | 2004-09-09 | 2004-09-09 | System for positioning a workpiece |
| CA2518681A CA2518681C (en) | 2004-09-09 | 2005-09-09 | System for positioning a workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2480976 CA2480976A1 (en) | 2004-09-09 | 2004-09-09 | System for positioning a workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2480976A1 true CA2480976A1 (en) | 2006-03-09 |
Family
ID=36035864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2480976 Abandoned CA2480976A1 (en) | 2004-09-09 | 2004-09-09 | System for positioning a workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2480976A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008537705A (en) * | 2005-03-17 | 2008-09-25 | ユーエス・ナチュラル・リソーシィズ・インコーポレーテッド | Log rotation and verification system and method |
| AU2006201934B2 (en) * | 2005-05-11 | 2010-05-20 | Matthew Dickson | A Stake Driver |
| EP2263841A1 (en) | 2009-06-18 | 2010-12-22 | UPM-Kymmene Corporation | Method and apparatus for measuring the rotation of a log and for correcting the rotation error |
| US7857021B2 (en) | 2004-09-09 | 2010-12-28 | Usnr/Kockums Cancar Company | System for positioning a workpiece |
-
2004
- 2004-09-09 CA CA 2480976 patent/CA2480976A1/en not_active Abandoned
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7857021B2 (en) | 2004-09-09 | 2010-12-28 | Usnr/Kockums Cancar Company | System for positioning a workpiece |
| JP2008537705A (en) * | 2005-03-17 | 2008-09-25 | ユーエス・ナチュラル・リソーシィズ・インコーポレーテッド | Log rotation and verification system and method |
| AU2006227740B2 (en) * | 2005-03-17 | 2010-05-20 | U.S. Natural Resources, Inc. | Log rotation and verification system and method |
| US7849894B2 (en) | 2005-03-17 | 2010-12-14 | U.S. Natural Resources, Inc. | Log rotation and verification system and method |
| JP4891984B2 (en) * | 2005-03-17 | 2012-03-07 | ユーエス・ナチュラル・リソーシィズ・インコーポレーテッド | Log rotation and verification system and method |
| EP3144100B1 (en) | 2005-03-17 | 2019-03-06 | Usnr, Llc | Log rotation and verification system and method |
| AU2006201934B2 (en) * | 2005-05-11 | 2010-05-20 | Matthew Dickson | A Stake Driver |
| AU2006201934B8 (en) * | 2005-05-11 | 2010-05-27 | Matthew Dickson | A Stake Driver |
| EP2263841A1 (en) | 2009-06-18 | 2010-12-22 | UPM-Kymmene Corporation | Method and apparatus for measuring the rotation of a log and for correcting the rotation error |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |
Effective date: 20130315 |