Method for injection molding a solid pattern onto a shoe upper

• US 20060017195A1
• Filed: 07/24/2004
• Published: 01/26/2006
• Est. Priority Date: 07/24/2004
• Status: Abandoned Application

• Current Assignee: Deng-Reng Yang
• Original Assignee: Deng-Reng Yang
• Inventors: Yang, Deng-Reng
• Application Number:
  US10/897,920
• Publication Number:
  US 20060017195A1
• Time in Patent Office: Days
• US Class Current: 264/244
• CPC Class Codes: A43D 21/127 with wipers A43D21/16, A43D21/18 take precedence
• CPC Class Codes: B29D 35/146 Uppers

Abstract

The invention relates to a method for injection molding a solid pattern onto a shoe upper, which is capable of molding solid pattern on a shoe upper, and generally including the following steps: 1. shoe upper stretching process 2. tightening a lower periphery of the shoe upper material 3. upper mold pressing process 4. injection molding process 5. cleaning up the final product.

Claims

1. A method for injection molding solid pattern on a shoe upper comprising the following steps:

first, shoe upper stretching process;

forming a plurality of positioning apertures on an periphery of a shoe upper material, placing the shoe upper material on a last, and then stretching the shoe upper material downward;

second, tightening a lower periphery of the shoe upper material;

after the shoe upper being stretched the stretching rod, plural sliding blocks moving towards the shoe upper material, an extendable stretching mold pushing the lower periphery of the shoe upper material inward, and thus tightening the shoe upper material;

third, upper mold pressing process;

pressing an upper mold having a cavity on a surface of the shoe upper material;

fourth, injection molding process;

injecting material into the cavity of the upper mold by employing an injection molding machine, since the shoe upper material has been tightened, the injection-molding material is integrally and firmly molded onto the surface of the shoe upper material;

fifth, cleaning up the final product;

after being taken out of the mold, the surface of the shoe upper material is injection molded with the injection molding material that corresponds to the cavity of the upper mold.

2. The method for injection molding a solid pattern onto a shoe upper as claimed in claim 1, wherein the shoe upper material is leather.

3. The method for injection molding a solid pattern onto a shoe upper as claimed in claim 1, wherein the shoe upper material is fabric.

4. The method for injection molding a solid pattern onto a shoe upper as claimed in claim 1, wherein the outer sliding blocks are provided with cavities, and the injection molding machine is employed to inject the injection molding material into cavities of the outer sliding blocks and to make it into solid plastic material.

5. The method for injection molding a solid pattern onto a shoe upper as claimed in claim 1, wherein the stretching mold is moved by the outer sliding blocks when tightening the lower periphery of the shoe upper material.

6. The method for injection molding a solid pattern onto a shoe upper as claimed in claim 1, in the shoe upper stretching process, the lower periphery of the shoe upper material is stretched by employing a plurality of extendable stretching rods to pull the positioning apertures on the periphery of a shoe upper material.

7. The method for injection molding a solid pattern onto a shoe upper as claimed in claim 1, wherein the last is movable and extendable, which is used to enhance tightening effect of the shoe upper.