Footwear help stretch forming process – shoes, stretch to help, upper – footwear industry
In the shoes of the production process, stretch to help is to help the beginning of the end of integration processes is the key process in the production process.
Will be installed for the Lord with, within the upper header, set the nails have been revised within the cut end of a good Shoe tree On the tensile force by the outside world, so tightly attached to the shoe last upper body, so that the required shape and the shape of shoe last machining to process the same as bandage.
In the shoes of the production process, stretch to help is to help the beginning of the end of integration processes is the key process in the production process.
(1) stretch to help the former preparations. Because of different methods to help end assembly, different methods to help stretch, stretch to help prepare pre-work is different. To glue over the entire nail shoes to help stretch to help France, for example, describes the preparation of pre-stretched to help: prepare upper, shoe last, the end materials, supplies and other tied with (lines with class Leather shoes ) Within the main header with softened after the nail repair help preform are stretched within the crane to help shape the end.
(2) stretch to help shape. stretch lasts method. As the stretch to help operators through the stretch to help nail press and hold the foot to help help the foot to stretch surface, due to stretch to help after the end of rotation on the circle along the shoe last appeared neat nails, it is also known as the row of nails.
Nail shaping method after pre-stretch: the process is ready to help leather, shoe last, the end materials, supplies and other tied with the Lord now, after softening within the header to help pre-formed nails, repair within the stretch before the end of suspension is to help , flank nail heel shape.
A bandage shaping method: the process is ready for upper, shoe last, the end materials, supplies and other tied with the Lord now, in Baotou, and help in activating the next set of dry mouth gluing shoe last stretch stretch flank followed by hammer finalized type.
Pull stretch to help shape law: the help side locking rope or nylon rope, by pulling the rope, so to help the shoes last casting material closely aligns the method for the stretch to help pull molding.
B. Machine stretch to help France. Help from the stretch position classification, can be divided into stretch Ago to help machine , Stretched in the plane to help, stretch After the machine to help , Stretched in After the machine to help Joint stretch to help machines.
Stretch to help the pressing machine is a mechanical device and tighten the wiper of a supporting role to help complete the stretch forming. A bit stretched capacity, even force, labor efficiency, low labor intensity characteristics. The main use for the mechanized production methods.
(3) ranked last casting method. To a certain degree of force through the shoe last stuffed shoe covers, from the inner cavity of the shoe to the edge, by extrusion, red, roof and other means to help set up the requirements for the arrangement lasts type shoe tree method, also known as Chuang lasts method.
This method has a short production cycle, the advantages of simple operation, but not very prone to help the side, and within the main header with insufficient hardness, the deformation characteristics of the footwear trade. Therefore, this method is suitable to help feed more flexible footwear.
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