Is the quality of using cardboard reliable? In the past, leather shoe insoles were processed from pig or cow leather. Nowadays, natural leather resources are decreasing. Alternative materials are being used to replace certain natural materials. Inner sole cardboard for shoes is widely used both domestically and internationally. The moisture absorption, air permeability, flexion resistance, interlaminar peel strength, tear resistance, dimensional stability, etc. of high-quality insole paperboard for shoes can fully meet the use requirements. If the insole paperboard breaks, shrinks, deforms, hardens, delaminates, etc. after wearing, it is unqualified. The steam spray device is used to spray wash the vamp first, then quickly heat and dry it. Then vacuum shape and massage the shoe upper. The temperature settings of each part can be adjusted according to the different materials of the toe, heel, and material, making the treated shoes appear streamlined, with a perfect appearance and better styling effect. The use of track type rolling and continuous conveying method is beneficial for improving the stability of the machine and the service life of the product, while also reducing the cost of machine damage. Adopting a rotary circulating conveyor belt saves time, improves productivity, and stabilizes product quality. Dongguan Xingyang Machinery Manufacturing Co., Ltd. needs to achieve the following key points in equipment maintenance: lubrication: timely oil change, refueling, and complete lubrication equipment. Cleaning: The equipment is clean both inside and outside, and all sliding surfaces are free of black oil stains.