A shoe last rough blank, a shoe last rough blank billet and a method for processing a shoe last using the same

Abstract

The invention relates to the technical field of shoe making, in particular to shoe-tree rough blanks, strips of the shoe-tree rough blanks and a shoe tree processing method using the shoe-tree rough blanks. The shoe-tree rough blanks of the same size can be used for processing finished products of shoe trees of multiple sizes, so that the universality is high, and the inventory pressure of the rough blanks and the cost pressure of a shoe making enterprise can be lowered. Each shoe-tree rough blank comprises a columnar shoe-tree rough blank body, each shoe-tree rough blank body comprises a clamped part and a processed part which are integrally formed, each clamped part is used for being clamped during rough processing and finish processing, each processed part is used for removing part of material during processing to form the finished product of the shoe tree with only the end surface of a cylindrical opening of the shoe tree connected with the clamped part, so that secondary clampingis avoided, the shoe tree processing process is simplified, and the processing precision is improved; the surface of the finished product of the shoe tree obtained after the cylindrical opening of theshoe tree is cut off is smooth without clamped marks; the shoe-tree rough blanks are obtained by cutting the strips of the shoe-tree rough blanks, so that the process is simple, and the blank stripsare convenient to store.

Description

technical field [0001] The invention relates to the technical field of shoemaking, in particular to a shoe last rough blank, a shoe last rough blank and a method for processing a shoe last using the same. Background technique [0002] The shoe last is the forming mold of the shoe, and the rough shoe last is the original blank for processing the shoe last. [0003] The shoe last not only determines the shape and style of the shoe, but also determines whether the shoe fits and protects the foot. Therefore, on the one hand, the design and production of the shoe last needs to consider the foot, because the shape, size, and stress of the foot change when the foot is at rest and in motion; on the other hand, it needs to consider the shoe, because the variety, style, The processing technology, raw and auxiliary material performance, wearing environment and wearing conditions are different. In this way, the shape of the shoe last and the size of each part will be ever-changing, fo...

AI Technical Summary

Problems solved by technology

[0005] The deficiencies in the existing shoe last rough blanks are: 1. The structure of the shoe last rough blanks is complicated, this is because the structure of the shoe last rough blanks corresponds to the style of the shoe last, and the style of the shoe last corresponds to the style of the shoes, and the shoe last rough blanks correspond to the styles of the shoes. 2. It is difficult to form the rough shoe last. This is because the shoe last processing factory mainly uses the shoe last injection machine for injection molding. The structure of the shoe last rough blank makes the shoe last injection machine use The mold structure is complex, which increases the difficulty of making molds; 3. When using the rough shoe last to process the shoe last, it is inconvenient to clamp. In some existing technologies, it is clamped at both ends of the shoe last and the processing is completed Finally, it is necessary to cut off the clamping part to leave clamping marks on the surface of the shoe last. In some existing technologies, it is necessary to perform secondary clamping on the shoe last to eliminate the above-mentioned clamping marks. There is also a five-axis numerical control technology. The whole shoe last is processed directly. Since the size and shape of the rough shoe lasts of different specifications are irregular at the mouth, and the size needs to be uniform when the machine is clamped, it is necessary to make a special clamping part, including a dovetail groove. Fixtures, and dovetail grooves and drill holes in the mouth of the shoe last, and then fix the clamping part and the mouth, so the clamping scheme is complicated; 4. The versatility of the rough shoe last is insufficient, which is due to the style of the rough shoe last One-to-one correspondence with the style of the shoe last, the rough shoe last retains a high similarity with the structure of the shoe last, and the style of the shoe last is related to the structure of the shoe last; 5. Causes inventory pressure and cost pressure on the shoe last processing factory , because there are too many individual styles and sizes of shoes, resulting in too many styles and sizes of shoe lasts, resulting in too many styles and sizes of existing rough shoe lasts

Although shoe lasts of multiple sizes can often be processed with a rough shoe last of one size, shoe last processing factories often need inventory There is a large backlog of rough shoe lasts of different styles and sizes, and the cost of raw materials in the rough shoe lasts is high, which puts pressure on inventory and costs

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