The Acrowood Veneer Chipper is specially designed to produce chips from waste veneer. The design of the chipper disc, arbor, and base produces an ideal arrangement so that the knife passes in the correct orientation relative to the anvil and anvil base. This chipper is not suitable for chipping cores or other forms of waste wood, as the knife and anvil arrangement is wrong for these other applications.
Ideal Knife & Anvil Arrangement – Produces Long Chips
The Long designation in the VCL name relates to the ability of the chipper to produce chips as long as 1-1 /2 inch with the 6 knife disc, and 1-1 /4 inch with the 8 knife disc. Chip length is set both by the knife projection above the disc (which is a function of the thickness of the knife wedge), and by the feed speed determined by the feedworks. Longer chips produce fewer fines and pins, a critical concern when chips are being used for pulp production.
Both chipper bearing pedestals and the chipper anvil base are re-buildable and can be reconditioned in our shop.
Durability & Long Service Life
Casting the disc is a more expensive way to make this critical part, but allows the designers to place just the right amount of steel in across the back of the disc, ensuring the stiffest and strongest possible part. The cast steel disc is fully machined to accept all necessary hardware. The front of the chipper is covered with wear plates and wear resistant parts, including the face mounted knives, special hardened and high strength bolts, and wear plates. The leading edge of the knife wedge is hard surfaced for long service life.
Wear Resistant Parts
Fabricated pedestals designed specifically for this purpose support the front and rear bearings. They hold the disc securely during all aspects of chipping. The disc and casing can be either bottom or overhead discharge. Blowing components (piping, cyclone, elbows, etc.) are available as options.
Feeding System Eliminates Problems
High Capacity Feedworks
Loose veneer can create an awful mess at the chipper unless it is compressed and held down until the actual chips are formed. The Acrowood HC Feedworks incorporates years of veneer chipping experience and design improvements, and represents the best available technology in this important area. Surges and loose veneer stacked randomly on the conveyor that causes other systems problems is not a problem for the Acrowood HC Feedworks.
Fingers Secure & Guide Veneer
A set of aluminum “fingers” passes through the turning roll. These fingers serve both to guide the veneer into the compression roll correctly on the infeed side, but more importantly, they hold the veneer down securely right up to the point of chipping. The veneer sheets are not allowed to jump or twist during the cutting process, so that every chip is as perfect as it could be. The special shape of the fingers holds the veneer, and the aluminum construction prevents damage to the chipper.
Belt Speed, Rotation Speed Critical
The feed belt conveyor threads through the base of the feedworks and forms an integral part of the feeding system. The speed of the belt and the rotation speed of the chipper disc are critical in forming the proper length chip. By providing the belt driving mechanism, the Feedworks insures that the belt speed is correct.
Overhead Compression Roll
The overhead compression roll is driven by the same motor, and is synchronized with the belt speed, so that there is no shearing or tearing of the veneer prior to chipping.
The roll is hinged and can pivot the Feeding system which eliminates problems when the veneer load is great, while still providing the compression force needed to hold the veneer stable.
Two cylinders with adjustable pressure provide additional compression force on this roll, and damp the movement for smooth operation.
We Can Retrofit Older Chippers
We can retrofit older chippers The HC Feedworks can be retrofit on an older chipper. Please contact Acrowood for a free evaluation of your chipperís operation.