C617 Lightweight Rail Track Horizontal Foam Slicing Winding Machine 0.5-70mm 0-120m/min

PU Foam Cutting Machine Horizontal Foam Slicing Machine with 0.5-70mm Cutting Thickness, 0-120m/min Cutting Speed and 1500-2200mm Cutting Width

The C617 is a horizontal slicing machine for continuous PU foam, built around a moving gantry that travels on a machined rail track. It slices an endless foam block into thin sheet from 0.5 mm to 70 mm, at a cutting speed of 0–120 m/min and a cutting width of 1500–2200 mm, with a cutting height of 1250 mm.

The machine is described as lightweight because the moving mass is concentrated in the gantry rather than in the base. A lighter gantry can accelerate and reverse with less inertia, which is why the machine is able to run at higher speed while keeping the cut steady. The rail is a 71 manganese high-iron guide rail with a finely machined surface, so the gantry tracks a straight path over the full stroke.

Control is servo-driven. The servo system governs gantry travel and the knife movement, and the gantry angle can be adjusted automatically to set sheet thickness. The machine also carries an automatic knife feed and an automatic blade grinding system, so the cutting edge is maintained during production instead of being left until the end of a shift.

1. 1Foam block positioned on the infeed side
2. 2Gantry travels along the rail track
3. 3Knife slices the block into thin sheet
4. 4Sheet taken off and wound or forwarded
5. 5Sheet to lamination, cutting or packing

The C617 sits between the foam block and the lamination line. A long PU block is presented to the machine, and the moving gantry carries the knife across the block face to produce a sheet of the set thickness. The sheet is then taken off continuously and passed to winding, lamination or the next cutting stage.

Because the block stays stationary while the gantry moves, long blocks can be sliced without being pushed through a fixed blade. That arrangement suits continuous production: the block can be fed forward as sheet is removed, and the machine keeps cutting without a re-clamping step at the end of each pass.

A 71 manganese high-iron guide rail with a machined surface keeps the gantry on a straight path over the full stroke.

Servo control governs gantry travel and knife movement, giving repeatable motion at speeds from 0 to 120 m/min.

Automatic knife feed and automatic blade grinding maintain the cutting edge during production.

The block is placed on the machine table and aligned against the guide. The gantry, carrying the knife, travels along the rail track across the block face. On each pass the knife removes a sheet of the set thickness, and the gantry returns for the next pass.

Thickness is set through the gantry angle and the knife position. The machine adjusts the gantry angle automatically for thickness regulation, which removes the manual setting step that would otherwise be repeated each time the sheet size changes. The servo system holds the travel speed steady, so the cut face is produced at a consistent rate rather than at a rate that varies with operator input.

The rail track is the reference for the whole cut. Because the gantry runs on a machined manganese rail rather than on a simple slide, the path stays straight over the full 1500–2200 mm working width and the sheet thickness remains consistent from one edge to the other. That is also why the tolerance is quoted as ±0.06 mm for sheet between 0.5 mm and 3 mm.

The 0.5–70 mm thickness range covers the thin sheet used in lamination and the heavier sheet used in packaging and cushioning. The lower end of the range is where tolerance matters: at 0.5–3 mm the machine is rated to ±0.06 mm, which is the band that determines if a laminated sheet bonds evenly and if a mattress panel finishes to the intended height.

Above 3 mm the tolerance is governed by the material and the feed rather than by the machine alone, and the sheet is normally specified by thickness with a commercial tolerance agreed between buyer and supplier. The 1500–2200 mm width range matches the common block widths used in mattress and furniture foam production, so a block can be sliced at its full width without pre-cutting.

The 1250 mm cutting height sets the maximum block height that can be presented. A block taller than this figure should be reduced before slicing, because an over-height block will not sit correctly against the guide and the sheet thickness will vary across the face.

• PU foam: the primary material, sliced into thin sheet for lamination, mattress panels, sofa padding and packaging.
• Flexible PU grades: conventional and high-resilience grades are sliced at the same thickness range, with the feed adjusted for density.
• Lamination substrate: sheet intended for bonding with fabric, film or another foam layer.
• Packaging sheet: thin foam slices for protective packaging and soft liner production.

Rigid plastics, wood, mineral fibre and foam containing hard inclusions are outside the scope of this machine. A sample trial is the quickest way to confirm settings when a new foam grade is introduced, particularly at the thin end of the range where tolerance is tightest.

Slicing is the step that converts a cured block into usable sheet, so the C617 sits early in the conversion process, before lamination and before any contour or cutting work.

Upstream. Blocks must be cured before slicing. A block that is still reacting will change dimension after it is cut, and the sheet will not hold its thickness. Storage on a flat pallet and a level floor prevent the base from deforming under its own weight.

Downstream. Sheet from the C617 moves to lamination, where it is bonded to fabric, film or another foam layer, then to cutting, profiling and packing. In mattress production the sheet goes to panel build-up and quilting; in packaging production it goes to cutting and packing.

Line layout. With a main unit of 5000 × 2500 × 2600 mm and a weight of 4 T, the machine needs a firm floor and clear space at the infeed and at the sheet take-off side. Placing it directly before the laminator keeps the sheet flat and avoids stacking and re-handling.

• Mattress and furniture: continuous thin PU sheet for mattress and sofa composite lamination.
• Composite industry: long foam sheet bonded with fabric or film for composite materials.
• Packaging: thin foam slices for shock-absorbing packaging and soft liner production.
• Sponge lamination plants: continuous slicing equipment for volume production of laminated sponge.
• Converters: re-slicing purchased blocks to a specified sheet thickness.

In each case the value is the same: a repeatable sheet thickness at a speed that keeps pace with the lamination line, with the knife maintained automatically during the run.

The choice follows the product. Long blocks and thin sheet at tight tolerance point to a rail track machine. Shaped parts point to a contour machine. Plants that do both normally run a slicer for sheet and a separate machine for shaped work.

Four questions settle the specification. First, what thickness range is required? The machine covers 0.5–70 mm, and the ±0.06 mm tolerance applies to the 0.5–3 mm band. Second, what block width will be run? The working width is 1500–2200 mm. Third, what block height? The machine accepts up to 1250 mm. Fourth, what output is needed? The cutting speed range is 0–120 m/min, so the practical rate depends on block length, sheet thickness and the time taken to return the gantry between passes.

Buyers should also confirm the sheet take-off arrangement, the lamination line interface, the available floor space for the 5000 × 2500 mm footprint and the electrical supply for the 25 kW motor. Sharing these details at the enquiry stage allows the machine configuration to be confirmed in one step.

At 4 T and 5000 × 2500 × 2600 mm, the C617 is a fixed installation. It should stand on a level concrete floor with adequate load capacity for the machine and the block being handled. The rail track must be level and straight; a floor that deflects will distort the rail and the sheet thickness will vary across the block face.

Allow clear space at the infeed and at the sheet take-off side, and keep the rail track clear of foam dust and offcuts. General lighting above the working zone helps the operator check the sheet as it is produced. Local extraction or general ventilation is recommended where fine foam dust is generated.

The electrical connection should be made by a qualified electrician to a circuit rated for the 25 kW main motor and the servo system, with an isolator close to the operator position. Voltage, phase and frequency are confirmed for the destination country at the time of order.

Commissioning follows a defined sequence: level the base, check the rail track for straightness, confirm the gantry travel over the full stroke, set the knife and the automatic grinding system, then slice a trial block at the target thickness. Measure the sheet at both edges and at both ends; this confirms rail alignment and gantry squareness before production begins.

Operator training covers block positioning, thickness setting, knife feed and grinding checks, sheet take-off and the shut-down routine. Because the machine runs continuously, the operator also needs to know how to shut down the line in the correct order and how to restart it without leaving a step mark on the sheet.

• Before the shift: check the knife edge, confirm the grinding system is working, inspect the rail track for dust or damage, and check the thickness setting against the work order.
• During production: watch the sheet for thickness variation, keep hands clear of the gantry path, and confirm that grinding is maintaining the edge.
• After the shift: isolate the power, clean the rail track and the knife area, and record any change in sheet quality or knife condition.
• Weekly: inspect the rail track and gantry guides, check the knife feed and grinding mechanism, and confirm fasteners on the gantry and base.
• Monthly: lubricate moving points, inspect servo and electrical connections, and confirm the machine is still level.

Spares normally held on site are knife blades, grinding wheels, guide inserts and fasteners. Knife life depends on foam density and abrasive content, so a plant running dense or filled foam should keep more blade stock. The rail track should be kept clean and lightly lubricated according to the maintenance schedule; dust on the rail is the usual cause of a step in sheet thickness.

A three-point check at the machine catches many defects before the sheet reaches lamination. Check sheet thickness at both edges and at the middle of the block, which reveals rail or gantry alignment problems. Check the sheet surface for step marks, which point to knife condition, grinding or an interruption in the gantry travel. Check the sheet width and edge quality, which show if the block was aligned correctly.

For thin sheet, also check for thickness drift over a long run. A gradual change indicates knife wear that the grinding system is not fully correcting, while a sudden change indicates a setting or feed problem. Recording the thickness setting, knife change date and grinding interval against each batch makes it possible to trace a defect back to its cause.

The machine is packed for export with the gantry and knife protected, the rail track covered, and the frame secured to the base. Final packing details are confirmed with the buyer before shipment, because the right solution depends on the destination port, the transport mode and the handling equipment at the receiving site.

Standard delivery is 45 working days after receipt of the down payment. Payment terms are L/C or T/T, the minimum order quantity is one set and supply ability is three sets per season. Buyers should confirm the electrical supply, the lamination line interface, the shipping destination and any documentation requirements at the enquiry stage so the machine is built for the correct market.