Greenmill Control Systems
Log infeed/debarker systems
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LOG INFEED DECK |
The complexity of the log infeed area in a mill can vary from a simple manually operated debarker system, to a fully automated system, complete with log scanning and data collection. Jaymor is able to tailor a solution to meet the best needs of the mill given the budgetary constraints of the project.
Jaymor has had experience with infeed systems for standard sawmills, and was responsible for the control system on the export log spray plant at Mt Maunganui, New Zealand. This system involved controlling the speed of the logs based on their scanned dimensions and the control of the automated spray system. These controls ensure that the spray nozzles are set at an optimum distance from the surface of the log to achieve the desired coverage.
In a sawmill it is often possible to combine the controls for the debarker and infeed area with the ancillary controls of the primary breakdown area. When fully automated, this enables operator of the breakdown system to monitor and control the infeed of logs to their area. It is also common for the loader driver to have some form of remote control to ensure a constant supply of logs to the mill.
System Examples
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Scanner frame at entrance
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Debarker rings on the
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Seat mounted console |
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Side console with LCD display |
Primary Log Breakdown
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Jaymor Industries is able to design a control system custom made for the primary breakdown requirements of any mill. Whether the client requires a single axis system for a carriage, a twin axis carriage/slabber solution, or multi-axis log line controls, Jaymor is able to draw on its vast experience in sawmilling to tailor a control solution to suit.
Like many automation providers, Jaymor is able to build a system based on common industry PLC controllers and also expand on existing controls if appropriate to provide a satisfactory end solution.
Where Jaymor differs from most automation suppliers is with its ability to offer a custom made solution for the timber industry from electronic design through to system commissioning. As such the cost of many of the control components can be greatly reduced as they have been designed solely for the timber industry.
Our controllers are able to command the most common position actuators right out of the box, whether they be electric motor (via VSD), servo-hydraulic or simple 'bang-bang' control.
At the heart of most Jaymor electronic solutions is the MSR loop controller, able to command two axis of movement. If a more complicated system is required, these controllers can be networked to provide up to 16 axes of motion - all with the one identical controller card! The main advantage of this to the sawmiller is that it greatly reduces the cost of carrying a spares package for the system. One spare MSR controller will provide cover for the entire primary breakdown system as well as the edger, resaw and breastbench elsewhere in the mill.
The more complicated primary breakdown systems can have a PC-based user display, offering detailed diagnostic information about the entire system, including the status of PLC inputs and outputs. Troubleshooting is greatly simplified with the aid of such information, resulting in less down time should a fault occur.
The PC-based systems also add the possibility of remote support. Provided a reliable internet connection is available to the system, Jaymor is able to log into the system and provide even greater support to the customer.
Jaymor has primary breakdown systems in place throughout New Zealand, Australia and the Pacific Islands. Please
contact Jaymor for details of a MSR controller-based installation near you, or for more information on a system to suit the needs of your mill.
System Examples
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Front mount MaxiMiser |
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MaxiMiser side console |
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Seat mounted console |
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Side console with LCD display |
Board edger systems
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Jaymor is able to offer suitable solutions for a variety of board edger applications. From single axis to multiple moving saw and picker arrangements, Jaymor has implemented a range of systems and has many satisfied customers throughout New Zealand and Australia.
Simple one or two axis systems are often easily accommodated with the stand-alone MiniMiser and MaxiMiser systems, but when multi-axis control is required it is often necessary to custom build the operator consoles to incorporate the ancillary controls that are additional to the standard dimension control.
It is common for lasers to be used to the indicate saw position on the board, although this often adds complexity to the control system due to the need for position control on each laser line. As a cost effective alternative, Jaymor is able to offer Virtual Laser. This system overlays computer generated lines onto a live video image to indicate where the saws will be positioned on the board for the selected solution.
Virtual Laser has the additional benefit of reducing wear on the mechanical components of the edger system. The saws are only moved into position once the operator has decided upon a final solution, and not for every size selection they make when determining how the board is to be processed.
It is often recommended that multi-axis edger systems have a PC-based user display to aid with fault finding and to provide greater system information to the operator.
System Examples
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Virtual Laser system |
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Standard edger system |
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Virtual Laser Screenshot |
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Single-axis resaw & breastbench systems
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Controls for breastbench and resaw applications can vary from very simple 'stand-alone' setworks systems, to more complicated control incorporating destination controls and various motor stop/start stations. In most situations Jaymor is able to provide a solution that is flexible, yet simple enough that the majority of installations are performed by the client.
The MiniMiser control panel provides the user with eight programmable size buttons over eight layers (allowing 64 storage locations in total). This system is ideally suited to simple single-axis applications. Bright LED displays inform the user of current position and stored size status.
The MiniMiser panel can be configured in the Jaymor workshop to suit many applications from a retro-fit onto existing hydraulics or electric control, to a full upgrade supplied tuned and ready to go with a Jaymor hydraulic solution.
The MaxiMiser control panel provides the user with an additional eight programmable size buttons, doubling the number of storage locations available to the user. While the MaxiMiser control box is pre-wired for twin axis control, it can easily be configured for single axis systems.
The MaxiMiser offers the client more flexibility than the MiniMiser, although both systems contain identical and interchangeable electronic components. The additional size buttons make the MaxiMiser suitable for twin saw resaw applications and some simpler edger systems.
These setworks controls are provided with hardwearing membrane panels to house all buttons and display windows. As the buttons on the panel are subject to the most wear and tear, the membrane face is easily replaced should damage occur.
All Jaymor control panels have well labelled diagnostic displays which are used to simplify the troubleshooting process, allowing Jaymor technicians to diagnose a fault over the phone.
System Examples
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MiniMiser console |
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MiniMiser breastbench |
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MaxiMiser twin axis resaw |
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MiniMiser resaw & ancillaries |
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Multi-axis resaw systems
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CONTROL CENTRE FOR MULTI-AXIS RESAW
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More complicated resaw systems commonly require more than one axis of control. Often the operator will be sited inside a cabin and is more "hands-off" than with simple single axis resaw systems. Jaymor are able to design the additional control required to allow the operator to manipulate the timber and components of the machine centre into a user-friendly layout to maximise throughput and accuracy.
The control axis for these type of system may comprise of multiple saws, multiple linebars or a combination of these. Such systems are capable of handling large cants and (in the case of multi-saw systems) can process a great deal of timber in a short space of time.
Trimmer / docking controls
The trimmer and docking area of the mill is located just prior to the timber exiting the mill. This machine centre will remove any wane from the ends of the board and square off the board. Such systems can range from a simple manually operated dock saw (in either lineal or transverse arrangement), to an automated multi-saw trimmer station.
An automated system requires the timber to be scanned prior to entering the saw station so that the control system is able to optimise the trim operation. Such systems are limited by the level of scanning used to make such process decisions from, along with the mechanical limitations of the machine.
One advantage of scanning the timber as it exits the mill is that it enables the production of the mill to be actively monitored and reported on, and can prove an essential tool in maximising recovery and minimising downtime.
System Examples
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Twin saw resaw system |
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Operators controls of a multi
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Multi-saw trim station |
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