When the project involves a front-end system inspection, the screwdriver programme must start from the customer ' s real production task. When the equipment is sold, the nozzle aperture, screwhead, anti-reverse ring and front end of the material cylinder will need to be organized into a set of verifiable, calculable and retroactive entry conditions.

Old machine upgrades are the easiest to ignore system matching. New screws must be compatible with the needs of old drums, drives, brakes, heating, nozzles, control of travel and molds. Any build-up, speed-up or material upgrade should first measure the status quo, then determine whether the single replacement, plasticization component upgrade or the full retrojection of the unit. Site information should preferably include both photographs, short videos and data sheets. Photos are used to identify machine interfaces, screw tails and front-end components, video can be observed to measure, buffer and abnormal sound, and data tables are used to calculate the rate of application, the need for plasticization per hour and the length of stay. If only partial information can be obtained, a list should be provided for confirmation, rather than a tentative condition being a definitive conclusion.

Calculates the nominal value to be converted to the actual condition. The machine often uses PS as a reference for the gel weight, which should be revised by density when using other raw materials; the weight of the product should be added to the main course, traffic separation and a reasonable buffer. The larger the diameter of the screw, the greater the theoretical capacity, but the pressure of injections per unit area under the same hydraulic pressure or servo system will decline and the resolution of the measurement of the small amount of the aerosol may also be variable. The focus of discussion in this paper is on nozzle apertures, screwheads, reversible rings and the front end of the material cylinders, which must correspond to the customer ' s current production conditions and not be limited to the maximum values in machine samples.

The configuration proposal should go to include nozzles and reversible components in the on-board inspection rather than using vague descriptions such as “enhanced” or “high performance”. The spiral drawings need to reflect the effective length, three-part scale, depth, compression ratio, tail connection and anti-reverse components; the material programme needs to distinguish the base, surface hardening, alloy layer or coating, and to indicate the pattern of failure for which they are intended.

If the above steps are ignored, the most common consequence is that front-end congestion or leakage may be mistaken for a new screw problem. The problems are often manifested in the trial phase of measuring time instability, insufficient stress residuals, buffer drift, unmelted, black spots, colour differentials or increased wear and tear. Continued increase in temperature, back pressure and turn speed at this time may temporarily improve the appearance, but may increase the shearing heat, material degradation and equipment load.

Ultimately, it should be judged whether the programme has met its objectives through depression, lace and buffer stabilization. If the result fails to meet the standard, each adjustment and result shall be recorded in five directions, by raw material, equipment, molds, process and screw, so as to avoid the loss of causal judgement by modifying multiple parameters at the same time. With the continued accumulation of project data for front-end system interfaces, the equipment manufacturer could gradually establish a package, a trade package and an aircraft-type menu to allow sales to quickly identify general and special conditions, while at the same time placing a truly complex project under the timely review of the application engineer.