High Pile Cutting Circular Knitting Machine

Cutting quality begins before the cutter

A high-pile surface depends on loops being formed and presented consistently before they are cut. If pile yarn tension, backing construction or take-down drifts, a sharp cutter cannot recover a uniform surface. The archived Kunyuan record distinguishes HMC cylinder-cutter and HMD dial-cutter routes. HMC is listed at 18–48 inches, 16G–26G and 12F–34F; HMD is listed at 16G–22G and 30F–72F, with a 38 inch/22G/60F example.

The old page also states that short loops commonly use separate cutter and hook components, while longer loops may use a combined cutter-hook arrangement. This is a useful selection clue, but the buyer still needs to submit the intended pile yarn, backing, loop/pile appearance and finishing method. Clothing, toy and home-textile applications have different surface and durability requirements.

Select HMC or HMD from the fabric route

Ask which side of the knitting assembly carries the cutting action and why that arrangement suits the sample. The quotation should identify cutter/hook type, gauge, feeder count, expected loop range, backing yarn and take-down. If a cam conversion to interlock is required, list the change parts and the separate acceptance fabric; do not assume a pile setup and an interlock setup share one performance result.

Pile height adjustment must be paired with a cutting inspection. Longer loops may require a different cutter/hook arrangement and create more loose fibre. Short, dense surfaces put different demands on needle, hook and backing stability. A physical sample is more reliable than a generic “adjustable pile” statement.

Cutter-layout decision sheet

Inspect a full-width pile sample

Use the planned ground and pile yarns, then retain settings for loop formation, cutter/hook arrangement, speed and take-down. Inspect across the fabric width for missed cuts, uncut loops, pile-height bands, thin backing areas and marks that repeat at one machine location. Gently separate the pile to view anchoring and the base fabric rather than judging only the soft face.

The archive contains one 38 inch production example: gray width 220–230 cm, finished width 150–220 cm and 350–400 kg per 24 hours, with specified ground/pile yarn examples and GSM conditions. Treat it as a condition-bound reference, not a guarantee. Any proposed output must state diameter, gauge, feeders, yarns, GSM, finished width, operating time and inspection losses.

Cutter wear, lint and defect tracing

Record cutter and hook inspection intervals for the ordered arrangement. Look for burrs, uneven wear, lint buildup and a change in cutting sound or load. A narrow uncut stripe may point to one cutter/hook or yarn path; a broad change in pile height may involve yarn tension, loop formation or take-down. Stop and trace the cause before increasing speed.

Keep the knitting/cutting zone clean using the supplied procedure and isolate the machine before entering it. Store rejected samples with their defect location and settings. That record helps distinguish a cutting issue from weak loop anchoring or a finishing problem.