Veneer production with subsequent manufacturing of various goods thereof is one of the most prospective trends in wood processing nowadays. There are several reasons for such popularity: first, ecological compatibility of the material, second, minimal waste during production, and third – wide variety of goods manufactured from veneer as initial material.
Veneer is a thin stretch of natural wood. According to production methods it falls into sawn, planed and peeled.
Sawn veneer is made by sawing of preprocessed burl wood. For better colour burl is soaked and steamed. Veneer obtained after sawing of burl is used for highly-artistic furniture trimming and production of sounding boards for string music instruments.
Planed veneer is made by cutting off of thin layers from timber. Ornamental effect of the texture obtained on different wood slices determines the planing direction. In order to match colours and textures of sheets planed off from one beam they are stacked and sheaved by way of planing. Planed veneer is used for production and trimming of furniture, plywood, wallboards.
Peeling method is used for production of veneer in the form of stretches peeled off a revolving billet on a rotary peeler. Today peeling is the most widespread method for veneer production. Peeled veneer is used for production of bent-and-glued parts for furniture, drawers and baskets for berries, vegetables and fruits, various types of packages, matches, ice-cream sticks, and wooden medical spatulas. It is this veneer type that is raw product for today’s most perspective building materials – plywood and laminated veneer lumber (LVL). Production technologies of such goods differ, but there’s one thing they have in common: their production chains include such operations as veneer peeling and splitting. For these purposes the research-and-production association “MAGR” Companies Group” has developed equipment sets for 1600mm and 800mm peeled veneer production and splitting.
ÑË-1600 and ÑË-800 rotary peelers are designed for production of peeled veneer from deciduous and coniferous plywood stumps and simultaneous splitting of veneer apron into stripes of necessary width.
In order to increase productivity and convenience of operator’s work the machines are equipped with hydraulic lifting-and-centering device allowing automatic definition of the most optimal billet rotation axis and its alignment with centering shafts rotation axis.
Billet’s clamping centers of the machines are collapsible. When the billet reaches the diameter of 160mm the outer part of the centres slides back and the billet is being held by the inner centres of smaller diameter. Such construction allows reliable fixation of initially bulky and heavy billet, avoiding its idle spinning and at the same time minimizing billet’s waste part.
Veneer’s required thickness between 0.5 – 5mm is set on the machine’s control panel and maintained during the entire peeling cycle by means of electronic system to the accuracy within 0.1mm. Edgewise veneer splitting is performed simultaneously with its peeling with moving knives whose position is adjusted manually.
In order to increase output of high-quality veneer both models are equipped with billet’s caving in restrictor. As the billet reaches the diameter set by machine’s operator (as a rule 160mm) the restrictor automatically driven by hydrocylinder fixes the billet with a special roller. The roller clamping force is selected so as to totally make up for the billet’s caving up.
On reaching minimal diameter of the processed billet (70mm) the machine is shut down automatically.
ÑË-1600 rotary peeler is equipped with a special electronic device transmitting veneer feed rate data to the recut ÑÄ-1600. Such system virtually controls the ÑÄ-1600 operation speed (veneer feed rate of the rotary peeler is equal to the veneer intake rate of the recut), allowing coordinated operation of both machines. Maximum veneer processing speed on the recut ÑÄ-1600 – 4 mps. Billets’ width is set by the operator on the machine control panel and may be varied in the range between 550 to 2200mm. Employment of the rotary cutting method allows quick and accurate splitting of moving veneer.
The ÑÄ-800 recut is designed for partition of a veneer stretch into slats from 15 to 320mm long. Unlike its bigger congener ÑÄ-800 operates independently of the rotary peeler.
The slat’s required width is set by the operator on the control panel and is reached by varying of the veneer feed rate and knife rotor velocity. The feed rate may vary in the range between 9 and 81 m/min and is selected automatically by the machine. At that the automatic machinery provides maximum possible speed (and subsequently maximum productivity) at a given billet’s target width. ÑÄ-800 productivity – 250 to 950 slats per minute.
For ejection of split veneer from cutting area the machine is equipped with a conveyer being simultaneously a surface for slats sorting..
Recuts are able to process several veneer stretches simultaneously within the limits of table width.
The abovementioned equipment does not require any special skills from its operators since the machines are simple and reliable in handling. Besides, “MAGR” Companies Group” specialists will conduct “basic training” for all buyers of the equipment – future operators will learn how to operate, commission, install and maintain the equipment.
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