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TECHUPDATE - Primary Mill Breakdown Equipment
By Tony Kryzanowski
Designed for small log, single-pass requirements, USNR’s SL3000 Small Log Processor integrates advanced mechanical, optimization, and control technologies to produce a high yield of ready-to-trim lumber and quality chips.
The SL3000 combines true shape scanning, controlled log transport, profile chipping, and curve sawing in a compact system. This configuration makes it possible to produce a wide variety of products in a single process, maximizing recovery of volume and value.
True shape scanners provide real-time optimization solutions displayed in 3D graphics on a Windows interface. Operators easily select grade inputs and choose full taper, split taper or variable taper solutions. The optimizer quickly generates multi-sawing and profile solutions.
The SL3000 is a well-engineered, high quality machine designed to maximize both value and volume recovery, says the company. USNR also offers log processors for larger logs and higher speeds to produce a broad range of products.
In business since 1984, Optimil has developed a full line of small log chipping canters. Its design team is constantly working to increase feed rates with more accurate lumber sizing. The small log canters of today can operate in excess of 750 FPM.
The Optimil Small Log Profile module can be incorporated into the chipping section or remotely mounted downstream on new and existing vertical arbor gangs. These profilers help to reduce the number of flitches going to the board edger, while maintaining accurately sized lumber.
Optimil’s close relationship with its customers has led the company to focus on sawdust and chip containment over the last several years. It has developed and manufactured a new chipping canter that is helping to reduce the number of stray chips and sawdust escaping in to the mill air. These have been developed with consideration for accessibility, maintenance and safety.
Optimil can provide high production through a new machine or updates to an existing machine.
Comact has introduced its edging module for primary breakdown.
This piece of equipment has been in operation at Quebec sawmill Scierie Dion since 2011. It allows immediate edging right on the log without compromising product output by twin band saws. Moreover, thanks to tools developed and tested for accurate log positioning, Comact clients are ensured of highly accurate edging/profiling of lateral products right on the logs.
HewSaw is a leader in the design and manufacturing of single pass primary breakdown lines and machines for sawn timber. This family-run company, which is based in Mäntyharju in the heart of the Finnish Lake District, is celebrating its 50th Anniversary in 2014 and has sold over 70 machines in North America and more than 350 around the globe.
In North America, HewSaw offers its “R” Series single pass machines which, depending on the model, can process logs up to 20” in diameter. Its “SL” lines, which feature multiple in-line units, can process logs up to 21.5” in diameter.
All HewSaw models are capable of producing edged sideboards while processing dimension and stud products from the centre cant, with the SL lines offering the most flexibility in output options. HewSaws are designed to maximize production volumes and recovery, while creating a safe, clean, quiet and ergonomically designed work environment.
The LDK Igirma sawmill belonging to the Russian Timber Group is a milestone for the development of the Siberian sawmill industry, says equipment manufacturer LINCK, a supplier to the mill.
The line begins with two large LINCK VM 50 canters, powered up with 320 kW each.
Within the profiler unit, wane is removed from the two sideboards produced at that stage. The profiler heads are adjusted vertically and horizontally with servo cylinders.
Based on the data provided by the upstream 3D scanner, the profiling heads will operate along the pre-planned cant in order to achieve nothing less than the most efficient solution provided by the optimizer, says LINCK. The sideboards, produced on the fly in the best possible way, are then removed from the centre cant by the CSMK DAG.
The line can work at speeds of 150 m/min (500’/min).
The plant is equipped with the latest optimization technology, allowing the proper decision to be taken for each individual log on how it should be sawn: straight, centered, diagonal alignment, or curve sawing.
Hardwood, softwood, small or large, TS Manufacturing has designed and built equipment for companies on every forested continent on the globe.
TS linear carriages are built to be precise, durable and reliable. With these concepts in mind, TS Manufacturing says their equipment are the last carriages customers will ever need.
TS bandmill systems possess extreme cutting accuracy, resulting in reduced sawdust and improved recovery. They are available in sizes of 48”, 60”, 72” and 84”, in vertical, slant and horizontal saw arrangements.
TS twin saw systems can be thin kerf circular or bandsaw systems. Features include turning roll infeeds, twin saw metal slat beds, drop belts and more.
TS resaw systems are available in vertical linebar, horizontal, slant or multiple saw configurations. Every system can be fitted with an air strain or high strain hydraulic system.
Since the mid-1990s, Söderhamn Eriksson, together with leading suppliers of measuring and optimizing equipment—such as MPM in Canada—have together delivered saw lines with the highest sawing yield available on the market, says the company.
The company’s primary breakdown equipment includes a rotating log turner which provides the best position for the log to be sawn. After logs are precisely positioned and 3D-scanned for optimal yield, they are then handled by the company’s LogPos, which always gives the correct alignment. They are then fed through a chipper canter equipped with the company’s newest chipping heads, the CombiCut. The cants are then processed through the AKE Sawmaster twin or quad arrangement. The Sawmaster can be equipped with Vision Tilt, which provides full band saw control for best performance and highest profitability.
For small log lines, the company’s band saws can be replaced with one of its Eurosaw circular saw machines; these saw lines increase sawing yield. The mill’s total capacity, accuracy and versatility will be improved, says the company.
The Lico SJM series twin circular saw is constructed using high quality mechanical components and is offered with different cutting depth capacity.
Each saw module is mounted on a heavy-duty 5” diameter chromed shaft for lateral movement.
It has a heavy-duty welded steel frame with a machined housing for pilot bearings. The pneumatic piping is mounted with hydraulic components.
It features centralized lubrication, and oil mist lubrication for bearings is available. All sensors are connected to junction boxes mounted on the machine.
Inotech Fabrication describes its one pass sawing line as the most affordable one pass machine on the market, and a way to reduce chip production.
It can produce square blocks from 1.75” X 1.75” up to 6” X 6”. It can be installed in tight spaces and has an integrated saw box, with up to three saw capacity. Its 2D scanner is described as easily configurable for all kinds of production. An optional 3D scanner with log rotator is available, and it comes with a choice of hydraulic or electrical motorization.
It features high speed production, up to 550 ft/min. Many configurations are available to meet customer needs.
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