Manufacturing method of flip-flops

Abstract

The invention discloses a manufacturing method of flip-flops. The manufacturing method of the flip-flops comprises the specific steps as follows: a sole die is put in a foaming machine, a foaming material is put in the sole die, and a glossy large board is formed; the large board after foaming is cooled at ordinary temperature, and is cut into a board sheet; the board sheet is subjected to double heating, and the board sheet after board cutting is put in a cold press for heating foaming; a cold pressing die is mounted on and fixed to the cold press, the board sheet after the double heating is put in the cold pressing die for cold pressing shaping for a period of time, and sole patterns, dent parts and through holes are formed; a pressed plate after the cool pressing is cut by a punch and a punch cutter; shoelaces are manufactured; and lacing is carried out. After the foamed large board is cooled at ordinary temperature, the large board is cut into the board sheet, the size of the board sheet can be adjusted according to the size of the cold pressing die, leftover materials of the large board can be removed in advance, so that defective goods and rejects are avoided in subsequent operation, and the yield is increased; and the board sheet is subjected to the double heating and the foaming, so that the material distribution is more uniform, and the yield is increased.

Description

technical field [0001] The invention relates to a glue-spraying manufacturing process, in particular to a manufacturing method of flip-flops, and belongs to the technical field of glue-spraying manufacturing process application. Background technique [0002] Flip flops represent fashion, freedom, liveliness and joy, so they are loved by young people. There are two manufacturing methods for flip flops, one is the drilling method, and the other is the hot pressing method. [0003] However, there are many deficiencies in these two methods. The sole patterns of these two methods are all formed when foaming at high temperature. In the foam machine, the foaming material is placed in the mold, and after the foaming is completed, it is made into a large board with patterns. This process has many shortcomings: 1) Due to the effect of thermal expansion and contraction, the pattern- The pattern located on the four sides of the large board will be deformed; 2) During the foaming proces...

AI Technical Summary

Problems solved by technology

[0003] However, there are many deficiencies in these two methods. The sole patterns of these two methods are all formed when foaming at high temperature. In the foam machine, the foaming material is placed in the mold, and after the foaming is completed, it is made into a large board with patterns. This process has many shortcomings: 1) Due to the effect of thermal expansion and contraction, the pattern- The pattern located on the four sides of the large board will be deformed; 2) During the foaming process, the material spreads from the middle to the surroundings, the material distribution is uneven, and the density of the large board is inconsistent; 3) Only rough patterns can be made to produce relatively fine patterns , it is prone to the problem that the material sticks to the mold and cannot be demolded smoothly; the second step is punching, after the large board is cooled at room temperature, use a punching machine and a punching knife to cut the large board into a shoe sole

The defect of this process is: the leftovers of large boards are not removed in advance, and it is easy to form defective products and waste products

[0004] The drilling method is to use an electric drill to remove the material on the corresponding position of the recess and the through hole to form the recess and the through hole. The defect of this process is: because the material of the recess is removed, the shoelace is easy to squeeze out from the through hole, resulting in shoe strap detached from sole

The defect of this process is: during the hot pressing sintering process, the material undergoes a chemical reaction to produce toxic and harmful gases such as carbon monoxide. Therefore, a manufacturing method for flip-flops is proposed to address the above problems