JL-G7 · Fabric inspection and rolling

Published specifications

Values below come from the maintained catalogue record. The guide review date does not renew an earlier specification: read the dated source notes and confirm a current, matched configuration before comparing products.

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Jinlong presents the JL-G7 on its homepage with a photograph, the title of automatic edge-alignment inspection and rolling, and the 0–150 m/min figure. Clicking the card leads to the general product catalogue rather than a sheet for this model.

Because the card is brief, ask for the numbers that size the machine to your work: usable fabric width, the heaviest and largest roll it accepts and produces, core diameters, the tension control fitted, how accurately it measures length, the supply it needs and its footprint. With those on paper you can line up competing configurations from other suppliers.

The same homepage shows a box-type machine with electro-hydraulic guiding, and a separate article describes a large inspection machine with cameras and AI. Ask Jinlong to name the guiding hardware on the JL-G7 and say plainly whether automatic defect recognition can be added to it. A guide to inspection and rolling machines explains how these designs compare. [1] [2]

A smooth demonstration can hide a weak roll or a counter that drifts. Agree a result for each function before the machine runs, and decide what will be measured to judge it. [1]

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Tell Jinlong the construction, usable width, weight, stretch and recovery, and the condition of the edges. If continuous guiding and roll handling are part of what you are buying, ship a working roll of the real cloth instead of a swatch.

Give the incoming roll diameter and weight, its core and how it unwinds. Then give the target roll diameter and weight, core, winding direction and the process it goes to next. A roll heading for coating or lamination may need different winding from one packed for a customer.

List the seams, curling edges and uneven selvedges that turn up in daily production, and ask Jinlong how the JL-G7 deals with each. A photograph of the machine says nothing about which fabrics it runs well. [1]

The 0–150 m/min range describes how fast the JL-G7 moves cloth. The speed that matters is the one at which your operator still spots the agreed faults and the roll still comes out right. Ask for the speed range on the unit offered and see that speed shown on your fabric.

For visual inspection, judge the lighting, the viewing angle, how the machine stops and marks a fault, and what record it keeps. If you want automatic detection, request a proposal covering the cameras, software and lighting, plus a test that counts hits and false alarms on your samples.

Measure output as accepted metres or rolls across a complete run. Include loading, stops for faults, roll changes and any rework, because transport speed leaves all of these out. [1] [2]

Use these steps as the outline of an acceptance protocol with Jinlong. Fix tolerances and safe working procedures in writing before the first roll goes on. [1]

1. Fix inputs and targets

   Write down the fabric, roll and core, the inspection method and the length and roll criteria for delivery.

2. List the hardware

   Name the guide sensor and actuator, drives, lights, counter and any optional inspection or marking unit.

3. Thread and bring up to speed

   Follow the manual, then watch guiding, tension behaviour, creasing and edge handling from start-up to steady running.

4. Run the defect samples

   Pass your reference faults through at the chosen speed and check how the operator or the system logs them.

5. Stop, restart, complete the roll

   Look for restart marks, compare length with the reference, then check roll edges, firmness, telescoping and removal.

6. Save the recipe

   File the settings, measurements, sample references and timings for the whole cycle with the purchase order.

Ask for a dimensioned drawing that shows loading, doffing, the operator position and service access. It should state the roll loads allowed at the unwind and rewind and the lifting or handling devices included.

Request the supply voltage, phase and connected load, other utilities, guarding, and the exact control system and manual. Figures for other Jinlong models belong to those models, so take only JL-G7 numbers into your plans. Other machines for the same stage are listed under finishing-room machinery.

Agree commissioning on your fabric, operator training, counter checks, maintenance of the guide, spare and wear parts and how fast service responds. Get a current price in writing with the configuration it covers. [1]