Application

The optimising cross-cut saw can be applied in various areas of the woodworking industry:

• Sawmill production of semi-finished products
• Piedroit production
• Production of lamellas for production of bonded prisms, optimised cut-off of ready prisms according to jobs
• Production of massive furniture sections
• Automatic cut-off of boards and planks in production of construction carpentry products
• Quick cut-off of prisms and other materials during packaging production, etc.

The Supply Consists of These Elements

• Cut-off saw Störi Mantel KP 900 Easy Cut
• Saw blade disc 400–600 mm (according to design standard/max)
• Motor output 5.5 kW/7.5 kW
• Saw feed speed into the cut continuously regulated
• Maximum cutting speed 0.3 s
• Adjustable height of the disc lift 1/2
• Pushing down the cut piece
• Tolerance of max. accuracy +/- 0.3 mm (optional +/- 0.1 mm)
• Colour CZ control panel – LCD Touch Screen 15“
• Noise-suppressed cabinet design
• Control software SM OPTIMAL

Feeding Device

• Length of the feeding device – according to the customer’s re­quirement (2.2 m – 7.2 m)
• Drive unit AC SERVO – high precision, long service life, minimum noise
• Linear feed of the travel carriage integrated on the solid closed profile, pushing foot with reverse travel
• Continuous feed speed 0 to 2 m/s, reverse speed max. 3 m/s
• Permanent side pushing input/output
• Sufficient performance of the feeder for heavy sections
• Automatic checking of the entry length of wood

Output Belt Conveyor – Sorter

• Conveyor length for timber sorting (according to the customer’s re­quirement)
• Pneumatic product range sorters – ejectors
• Programmable sorting of individual lengths

Basic Equipment Functions

Length Optimisation

At the beginning, the lengths and quantities of pieces of the required product range are entered into the piece list. This data can be subsequently activated in the optimisation program. This consists in a combination of individual selected lengths of the cut product range for purpose of minimising waste. The piece list also monitors the cut quantity of material and interrupts the work upon completing the task in the entered product range. The saw automatically admeasures the length of the inserted material, so it is possible to combine more inserted lengths without the necessity of previous sorting. It is possible to set the required length of face incision.

At the rear belt conveyor, there are positions for sorting according to the timber lengths. Individual ejectors are started at the moment, when there is a cut part of the needed length near them. Sorting is performed by throwing into prepared boxes. The number of optimised lengths – unlimited. Quality Optimisation

Timber handling according to quality allows for using the working cycle of previous functions together with the possibility of marking timber defects using chalk. The operator will perform a visual evaluation of the piece, mark the defective points with chalk, which must be cut out. The chalk contains a substance registered by the control system of the saw. By moving the stopper above the cut material during the return movement, the current positions of needed cuts are registered. The created parts in various lengths between the cut-out defects are automatically measured and cut using the computer to fixed lengths according to the optimised cutting scheme. The piece list determines the number of cut pieces of the length in question. If the cut part does not meet the length of the smallest chosen product range, it goes to waste.

At the rear belt conveyor, there are positions for sorting according to timber lengths. Individual ejectors are started at the moment, when there is a cut part of the needed length near them. Sorting is performed by throwing into prepared boxes.

Statistics

A part of the NC control of the machine are statistics, which register the number of cut running metres, the quantity of quality parts, and the quantity of waste. It is therefore e.g. possible to simply compare the quality of the input wood from various suppliers, calculate the overall volume of produced product range (with identical widths) etc. The machine also files the actual working time, which can be used by the production section manager e.g. for checking of work performances.

At the same time, there is a possibility of output to a printer and remote administration via PC from an office.

Optimisation Line Production Capacity

The production capacity is determined by the dimensions of the processed material, its quality, and produced product ranges. For the calculation, it is possible to use the data about the maximum speed of the feeder 90 m/min. and the speed of one cycle of cutting about 0.5 seconds.

The saw performance determines the selection from two offered variants of saw KP 900 Easy Cut:

(The values state the performance from practical use of saws at users of our machines, not a theoretical machine time, which is frequently presented by foreign suppliers – designed for material of length 5 m, spruce, 30×90 mm, 4 cuts per 1 m)

Further Possible Expansion of Saw KP 900 Easy Cut

The rear sorting conveyor with the possibility of length sorting into multiple storage boxes. The system works on the principle of electronic measurement of length and sorting into boxes using ejectors.

Connection with office PC – possibility of checking the work course, entering, modification of values in the form of remote access.

Continuous regulation of speed of the saw motor in case of a variable change of the diameter of the saw blade disc and according to the requirement for cut quality. Regulation is performed by continuous setting of the value via the control panel.

Automatic material feed to the saw. Possibility of connecting into a serial production line via the lateral feed conveyor at the input table. Synchronisation of feed and automatic start of the cutting cycle.

Possibility of complementing with many feeding and handling elements in the form of driven and non-driven conveyors.

Technical Data