34-Inch Pneumatic High-Foot Thread Circular Knitting Machine

Resolve the old specification conflict first

The structured product field and cleaned record identify this model as 34 inch, 18G and 60 feeders, with a 20 RPM reference. An older paragraph reversed the values and described “60G/18F.” That contradiction should not remain in purchasing content. The signed quotation must use the 34-inch/18G/60F configuration unless Kunyuan issues a different model-specific technical sheet.

The intended work centres on collars, cuffs, waistbands and related threaded or ribbed garment components. These products are judged by dimensions, edge condition and recovery after assembly, not by a generic statement about ultra-fine fabric.

What the pneumatic high-foot route must explain

Ask Kunyuan for a labelled drawing of the pneumatic high-foot mechanism, its operating pressure and the yarn/component structures it is intended to support. The word “high-foot” should be tied to a real mechanical arrangement and change procedure. Confirm how the system affects access, yarn clearance or fabric handling on the offered model.

Component production also needs a precise cylinder/dial, cam and yarn plan. If elastane or specialty yarn is used, record the feed path and tension/draft method. The same collar width can behave differently after dyeing, heat setting and sewing.

Component-order checklist

Trial the actual garment component

Knit the intended collar, cuff or waistband yarn and construction. Record machine setup, pneumatic setting, stitch length, yarn/elastane feed, speed and take-down. Inspect loop definition, needle lines, holes, edge roll and width along the component.

Finish the sample through the buyer’s normal route and measure it after the agreed relaxation time. Stretch and release it using the buyer’s method, then assemble a representative piece when possible. Check whether the seam, edge and recovery remain acceptable. A flat fabric swatch alone may not expose distortion at the garment opening.

Pneumatic and knitting maintenance are separate

Log air pressure and any leakage/alarm independently from needle-bed, cam and yarn-feed checks. A pneumatic fault should not be “corrected” by altering stitch or take-down. Likewise, an uneven rib line requires a knitting-location review even when air pressure is stable.

Release pressure and isolate power before work on the high-foot mechanism. Keep approved settings and the corrected 34/18G/60F model identity with the sample so the old reversed specification cannot return during quoting.

Put the corrected model on every commercial document

The old specification conflict can reappear if only the web body is corrected. The quotation, pro forma invoice, packing list, nameplate record and acceptance sheet should all use the same 34-inch/18G/60F identity. Ask the supplier to mark any optional mechanism or change part next to that base configuration rather than embedding it in an ambiguous product name.

Also confirm floor space, service height, air connection, voltage, included tools and spares. At commissioning, the operator should be able to identify the pneumatic high-foot components, isolate stored air, restore the settings and produce the accepted component again. Record that exercise with the training sign-off.