TDPO-2.2 CNC Revolving Loop Blade Foam Contour Cutter Cuts 6000x2100 mm Blocks

6000x2100 mm CNC Foam Contour Cutting Machine with 1300 mm Cutting Height and ±0.5 mm Precision Tolerance

The TDPO-2.2 is a CNC horizontal loop band knife contour cutting machine built for batch production of flexible foam profiles and thick sheets. Its micro-tooth loop blade runs horizontally at up to 70 m/min and the cutting head revolves through ±360°, so a complex two-dimensional contour is cut without turning the block.

The 6000×2100 mm table is sized for full production blocks and for nesting several parts in one program. Cutting height is 1300 mm and the minimum cutting radius is 10 mm — a combination that covers tall blocks and the tight returns found in seat bolsters, headrest surrounds, chair arms and decorative profiles. Precision tolerance is held at ±0.5 mm.

The machine weighs 3.5 tons and measures 8000×5000×2700 mm, with 8.5 kW of installed motor power. It was developed for PU sponge and latex sponge, the two materials that dominate automotive interiors, furniture and decorative foam work.

As a horizontal loop machine it is the right instrument when the part is essentially a contour cut out of a block or a thick sheet. Full three-dimensional shaping is a different job and needs a vertical profiler, which is covered in the comparison section below.

A production cycle is a program recall with two checks, which is what makes the output repeatable across shifts.

1. 1Load the block or sheet. The workpiece is placed on the 6000×2100 mm table against the reference edge.
2. 2Recall the part program. The stored contour for that part number is selected on the control interface.
3. 3Check band speed and feed. Values are set for the material density — higher on long straight runs, lower through the 10 mm radii.
4. 4Run the contour. The CNC moves the workpiece while the revolving head keeps the tooth edge tangent to the path.
5. 5Close the loop. A closed shape is finished in one pass; the head returns to the load position.
6. 6Unload and repeat. The part is removed, the next block is loaded, and the same program runs again.

Nesting is the practical gain in steps one and two. With a 6000 mm table, several parts can be arranged across the block in one program, so the band spends a larger share of the shift cutting instead of travelling back to a start point.

A horizontal loop band knife runs an endless toothed band in a horizontal plane. The cutting edge passes through the workpiece at table height while the return section runs below or behind the guard. Because the band is continuous, the cut is smooth and uninterrupted: no reciprocating stroke, no reversal dead time, and no shock at the guides.

The feed is generated by the CNC table or head movement, so the contour comes from the program rather than from an operator pulling the block by hand. That is the difference between repeating a profile and reproducing it.

The revolving head adds a second axis of movement. The band assembly rotates through ±360°, so the tooth edge always faces the direction of travel. On an S-curve or a closed loop, a fixed horizontal blade would bind or tear because it would be cutting sideways through the foam. With the revolving head the blade stays tangent to the path, the kerf stays clean, and a closed contour is completed without lifting or re-entering.

On tight sections the feed rate is reduced so the band can follow the path without rubbing. That single setting separates a clean 10 mm radius from a burnt or torn one.

A plain sharpened band cuts well when new, but the edge dulls progressively. The operator compensates by reducing feed rate or accepting a rougher cut until the band is re-ground or replaced, and both options cost output.

The TDPO-2.2 uses a micro-tooth structure instead. The small teeth score and separate the foam cells along a narrow line, so the cutting action stays stable as the edge wears and the repeated re-grinding step disappears from normal production.

For the buyer the effects are practical rather than cosmetic:

• Stable precision: the tooth geometry keeps cutting rather than rubbing, so the tolerance holds through a long run instead of drifting with edge wear.
• Less downtime: band changes and re-grinding are scheduled rather than forced by a failing edge.
• Consistent cut face: an open, slightly textured surface that accepts adhesive, which matters for PU and latex parts that are later glued, laminated or upholstered.

The tooth pattern is not a saw blade for rigid material. It is designed for soft foam, where the goal is a clean separation of cells rather than the removal of chips.

• Revolving loop cutting head: a horizontal micro-tooth band with ±360° rotation, keeping the edge aligned with the contour direction.
• Band drive and tensioning system: 0–70 m/min band speed with tracking and tension control that keeps the loop centred during long runs.
• CNC motion system: interpolated table and head movement with acceleration profiles tuned for soft foam, so corners are not torn.
• 6000×2100 mm table: a long working surface for full blocks and multi-part nesting, with 1300 mm cutting height clearance.
• Control cabinet and operator interface: part program storage, production counters and fault diagnostics.
• Safety guarding and interlocks: the band return path and the drive wheels are enclosed, and the cycle cannot start if a guard is open.

The frame is the part buyers underestimate. At 3.5 tons and 8000×5000×2700 mm it is sized to carry a full block without table deflection: on a 6000 mm table, a table that flexes in the middle shows up as a tolerance error at the far end of a nested program.

A 10 mm radius is unusually tight for a horizontal band machine of this size, and it is set by band width and guide geometry rather than by the control system. Below that radius the band cannot bend around the path without rubbing and overheating, so programs should stay at or above 10 mm and the feed rate should be reduced on the tightest sections.

Edge quality is a separate benefit of tooth cutting. The teeth separate the cells instead of melting them, so the face is open and slightly textured. Adhesive penetrates that surface rather than sitting on a glazed skin, and the foam stays compressible right at the edge of the part.

The cutting size is the plan area of the block that can be processed; the 1300 mm figure is the wall height that can be cut in one pass. Parts deeper than that are cut from a pre-split block or in two operations.

• PU flexible sponge: seat foam, cushion cores, mattress layers and packaging profiles.
• Latex sponge: mattress comfort layers, pillows and contour-cut latex parts.
• Soft flexible foam sheet and block: where a two-dimensional contour is required from a thick section.
• Laminated flexible foam: where the adhesive is fully cured and the layers are compatible with band cutting.

For very soft or low-density latex, band speed and feed rate are set lower. A starting parameter set is supplied with the machine and confirmed on the first block of the customer's own material.

• Automotive interiors: shaped PU and latex foam for seats, headrests, bolsters, armrests and trim padding, where contours include tight returns and small cut-outs that a larger-radius machine cannot produce cleanly.
• Furniture and mattresses: contour cutting of sofa cushions, mattress transition layers, chair arms and decorative foam parts, with several parts nested in one program on the 6000 mm table.
• Interior decoration: custom decorative foam profiles, soft architectural shapes and packaging sheet material, where design changes are frequent and die cost is the wrong investment.
• Foam processing factories: batch profiling of latex and PU sheet, including contract cutting for other manufacturers, where output is measured in shifts rather than pieces.

The common thread is a two-dimensional contour out of a thick section, repeated in volume. Where the part is a full three-dimensional shape, a vertical profiler is the correct machine and the two are usually found in the same plant.

For a plant cutting several similar profiles from each block, the horizontal loop with a long table is the productive route. For deep three-dimensional parts, the vertical machine is not optional. Many workshops run both and route work by shape.

The 6000×2100 mm table is one of the defining features of this model. It allows a full production block to be loaded without pre-cutting, and it allows parts to be nested along the length so the band spends more time cutting and less time travelling.

Large blocks are light for their size, and a fast band can shift them if they are not supported. The table surface should be clean and flat, and the block should be positioned against the reference edge before the cycle starts. For tall or very soft blocks a hold-down or a simple fixture is recommended, and a sacrificial base board can be used where the part cannot be clamped.

Because the program reference is the table plane, any fixture or base board has to be accounted for in the setup. Sharing the part drawing and the foam grade before the order lets us confirm the nesting layout and the holding method at the same time.

The TDPO-2.2 sits in the shaping stage. Upstream it receives blocks or thick sheets from a foaming line, a horizontal peeling machine or a vertical block cutter. Downstream its output feeds lamination, gluing, quilting, upholstery or packaging assembly.

The link to the previous process matters. As with any contour machine, the block should have a reasonably flat bottom and square reference edges, because the table and the program assume a known datum. A block with a sloped base produces a part with a varying wall height even if the contour in plan is correct.

In a typical layout a vertical cutter squares the block, the TDPO-2.2 cuts the contour, and a lamination line bonds the shaped part to fabric or to another foam layer. Where the plant also runs a peeling machine, thick sheets can be peeled first and contour cut afterwards, which is often more economical than cutting thin sections out of a full block.

• Foundation: a level, reinforced concrete floor able to carry the 3.5-ton machine plus the workpiece; anchor points are supplied.
• Power: a dedicated supply matching the 8.5 kW installed load, with correct earthing and stable voltage.
• Space: access to the 8000×5000×2700 mm footprint from the loading side, with room for safe band changes and for the control cabinet door to open fully.
• Environment: a dry, covered area. Foam dust should be cleared regularly, because dust on the guides and band wheels is the usual cause of tracking faults.

The frame size also decides the shipping method. An 8000 mm frame normally needs a flat-rack container, so the route and the loading plan should be confirmed at order stage rather than at dispatch.

The band wheels and the return section of the blade are enclosed by guards with interlocks, and the control system prevents the cycle from starting if a guard is open. Emergency halt buttons are placed at the operator position and at the rear of the machine.

Band changes are carried out with the drive isolated and with cut-resistant gloves. Because the band is a continuous loop, correct tensioning and tracking after a change are essential, and the procedure is covered in the operation manual.

Operation is learned quickly. A new operator normally needs one to two days to load programs, set band speed and feed rate, and run a first article. Programming is done offline from a DXF file or a drawing and transferred to the controller, so no machine-side code writing is required. Training at installation, a printed manual and remote support for program preparation are included.

• Daily: band tension, tooth condition, guide cleanliness and table surface.
• Weekly: wheel tracking, guide wear, lubrication points and electrical connections.
• Consumables: micro-tooth bands, guide inserts, wheel bearings, tension springs and proximity sensors.

Band life depends on foam density and abrasive content. The micro-tooth structure is designed to reduce the frequency of re-grinding, but the band is still a wear part: when the cut edge starts to show fuzz or the feed force rises, it is replaced. Keeping one spare band on site means a damaged edge does not hold up the line.

Wheel tracking and guide wear are the second items to watch, because they open the tolerance gradually rather than failing at once. A weekly tracking check catches the drift before it appears in the finished parts.

Each machine is assembled, wired and run before shipment. The test record covers band tracking and tension, head rotation through the full 360 degrees, CNC response, guarding, emergency halt function and a sample contour cut measured against the drawing. The inspection record is supplied with the machine.

The machine ships in export-grade packaging: the table and frame are protected against moisture, the cutting head is secured, and loose parts are boxed and labelled. Packaging and the loading plan are confirmed before dispatch, because the 8000×5000×2700 mm frame normally requires a flat-rack container.

Delivery is 45 working days after the down payment is confirmed, shipped from Qingdao port. Payment terms are T/T or L/C, minimum order quantity is one set, and supply ability is three sets per season. The electrical configuration is CE compliant for European and other export markets.