CS197160B1 - Gregus,rudolf,cs - Google Patents

Description

The invention relates to a process for the production of unit-size lightweight, precise heights, in particular with high heels, and to molds for carrying out the process.

Sorazed rubber bottoms have recently been used in the shoe industry in the shoe industry because of their good performance properties, low density and surface finish 9 with a good aesthetic impression. In the production of lightweight rubber articles with a closed porous itructure, the so-called saat is most often used. expansion method. Another principle is that the rubber composition contains additives to form a porous itructure, so-called " the blowing agent, compressed in the mold closing cavity, and heated to the blowing agent decomposition temperature, the gas blowing at this temperature generates a high pressure in the compressed mixture at high temperature, and after external pressure is released, it expands and thereby obtains β-closed porosity. structure their. This manufacturing process requires that the oracles of a part of the article to be produced be approximately equally coarse in the direction of expansion and perpendicular to the emsr expansion to ensure uniformity of the porous itructure and dimensional stability of the finished products. This condition is difficult to satisfy with podoilev due to the light shape and different heel heights. This method does not allow the production of sheaves and high heels, thus reducing the aesthetic level and reducing the aortimant. The requirement of the same depth also requires to fill the space with material which is not necessary in terms of performance and unnecessary and increases haotnoate podoivy.

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The disadvantage of the present invention is to eliminate the epaea of the present invention, which is based on the fact that after the ileeteine vulcanization of the rubber surface on the surface of the mold cavity and the distribution of the non-blowing agent e , the rubber zaee in the cavity space forming the heel part of the podoivy zoetáve in pávodnoa objave, o potoa zaee in oelea objoae scans. The essential feature of the present invention is to implement this epaebob, in which the middle and longitudinal part of the claw and the arched part of the shoe have been formed along the looom for the skin of the upper sliding part.

The technical effect of the invention is to reduce the haotnoetics and to extend the eortiaent of the lightened susceptions while respecting their dimensional mobility.

The exemplary embodiment of the invention according to the invention is illustrated and illustrated in FIG. 1 is a longitudinal sectional view of the open mold, FIG. 2 is a longitudinal sectional view of the closed mold in a stripped state, FIG. 3 contaminates the front of the closed mold by loosening the cavity in the foot and gusset portions of the podoiva in longitudinal section.

In the epodnoa dlel · 1, the foray is formed by a cavity 5 for forming a podoive, which is closed from above by a molding part formed by a central piece 2 e of an upper sliding plate 3. A lea 21 is provided around the edge of the cavity 6 and treaded to form a decorative rifle. not finished podoive g. Two protrusions 22 of the central part 2 are inserted into the lining part of the cavity 5 in the epodnoe ll. upper sliding part g. The central member 2 is pivotally connected to the epodial member 7 on the pin 4. On the opposite spindle, the center member 2 in the epoxy part 1 is sealed by means of the closure 6.

Upon opening of the mold ea into the cavity 6, a preformed charge 7 of a rubber compound of the enriching additive is inserted to form a pirvular itructure. By closing the treatment part formed by the central part 2 and the upper sliding length g e, the rubber mixture charge 7 presses into the oily hole of the cavity 5. The heat treatment of the rubber device 7 partially heats, forming a coaxial surface of the whole bed and bed. . After releasing the pressure in the footboard and the crown member by sliding the upper slide member 31 from the cavity 5 through the opening in the middle 2 to the position defining the final shape of the completed beam 8, the loosened through hole fills the rubber hole in the pressure blower. LIGHTED P Rough itructure in this podoivy section. The rubber foot in the heeled podoive in the undersized volume and shape of the zoet is unpainted by a coapactual itructure.

In the present invention, the vulcanization of the rubber device on the surface of the foray e cavity 5 during the brewing process creates a perfect connection between the lightened and unpainted parts of the finished podoiva 8. The white rubber heats in a large volume by vulcanization. After vulcanization and the upper slide 3 of the mold are fully extended, the atrial member 2aa is folded out and the finished sub-base 8a is removed from the cavity 5 of the lower mold part.

Claims (2)

1. A method for producing expanded rubber soles of exact dimensions from a preformed rubber composition comprising a blowing agent for forming a straight structure, embedded and molded in a molded cavity of a spun llaze mold, characterized in that after the partial molding and molding of the mold, the cavity of the cavity forming the foot and stilettial sub-lining is released to the final volume, the well plated part of the partially vulcanized rubber mixture of the axpand is into this space, the rubber grains in the cavity forming the sub-lining, and then sowed in the cavity, 2. A mold for carrying out the epchob according to claim 1, comprising a lower part and a shaped cavity, an atrial part rotatably connected and a like diol, and an upper sliding part, characterized in that in the trunk (2) there is a part forming a plastic hole (31) of the upper sliding part (3) formed along the lamella (21),