Multi blade machine for pulpwood UPT-250C

The UPT-250S small-timber processing machine is a through-type milling and canting machine designed for longitudinal sawing of low-grade timber with a diameter of 80 to 280 millimeters into high-quality edged lumber. The sections of the finished product can vary from 60 to 160 millimeters in width (set by an electronic ruler that sets the size between the side cutters) and from 10 to 200 millimeters in height (set by the number and distance between horizontal disks), while the length of the workpiece can be from one to six and a half meters. On the UPT-250S machine, two cutters are used to saw the log, which remove the side surfaces of the log, and two blocks of horizontal disks follow them, which saw the planks prepared after the cutters into boards. At the exit from the machine, a ready horizontal stack of boards and two slabs are obtained.

The presence of side cutters in the sawing pattern ensures that the horizontal disks work on a clean surface, thereby significantly extending the service life of saw blades. The mechanism for sliding and extending the side cutters is equipped with an electric drive, due to which the operator can quickly change the width of the plank during machine operation, while the value will be displayed on the electronic display of the control panel. The visual contours of the future plank are projected directly onto the log by powerful linear lasers, which help to correctly position the workpiece on the receiving table.
   This machine has a unique scheme for processing small-sized raw materials, which is protected by patent RF No. 2755818.

Thanks to a number of original technical solutions used in the UPT-250S, it was possible to surpass similar through-feed type machines in technical characteristics, namely:

• reduce energy consumption to 96 kilowatts without loss of productivity
• reduce the thickness of the cut to 3 millimeters, due to which the percentage yield of suitable lumber increased
• it became possible to process logs with a high degree of taper and curvature
• get rid of the accompanying thin slabs and so-called "noodles" and "splinters"
• due to the prompt change of the distance between the side cutters, there is no need for preliminary sorting of the forest

Main advantages and differences:

Possibility of sawing logs with a diameter of 80 to 280 mm. Possibility of sawing logs with a high degree of curvature and taper Possibility of sawing logs with protruding branches

Maximum removal of side milling cutters up to 72 mm per side. Side slabs and protruding branches are processed into chips and removed by the aspiration system.

The mechanism for sliding and expanding the side cutters, responsible for quickly changing the width of the resulting boards or timber, is equipped with an electronic ruler with 4 programmable buttons for any size from 60 to 160 mm. The current size is changed by pressing just one button. This function allows you to do without sorting the forest (blank) by diameter.

The UPT-250S thin-wood sawmill is equipped with powerful linear lasers that project the contours of the future plank onto the workpiece. The operator clearly sees what can be obtained from the log while it is still on the feed table (log hauler).

The basic configuration includes: automatic sequential start-up system for all motors and drives smooth feed rate control automatic feed rate limitation system when the main motors are overloaded main motor load indicator maximum machine power consumption control electronic part heating active surge protection system

The hinged casings of the UPT-250S provide optimal protection for workers from sawdust and at the same time provide free access to the internal structure for servicing the machine.

The built-in system of covers and aspiration ensures the timely removal of chips and sawdust from the working area.

The receiving table (log hauler) of the UPT-250S small-timber machine is equipped with manual log tilters, with which the operator can lift the workpiece above the table and turn it. When turning the log, the operator is guided by the projection lasers and thereby achieves a more optimal yield of suitable lumber.

The centering log clamp is designed for automatic alignment and holding of logs on the feeding table (log hauler) of the machine. Also, the clamp can be moved and locked in the upper non-working position - this option allows you not to dismantle the entire structure if you need to saw logs with a high degree of curvature and protruding branches.

Machine equipment:

1. Receiving table with feed chain - 7.2 m.
2. Delivery roller conveyor for finished products - 4.8 m
3. Aspiration system with exhaust hood 11 kW
4. Electric drive for moving/moving cutters with electronic size indication
5. Linear laser cutting indicators -2 pcs.
6. Smooth feed speed adjustment with automatic system. speed limits by load.
7. Claw protection on the input window of the machine - 1 pc.
8. Self-centering log clamp - 2 pcs.
9. Set of knives - 8 pcs.
10. Set of circular saws d250 mm - 12 pcs.
11. Set of spacer washers for the multi-saw unit - a complete set for obtaining boards from 20 mm to 200 mm with a gradation of 1 mm
12. Log tilter on the receiving table - 4 pcs.

Video of the operation of the machine for processing small timber UPT-250M / UPT-250S: