Manufacture technology of PU (poly urethane) dumbbell ball or dumbbell piece with colorful logo

A production process, technology of dumbbell balls, applied in the direction of dumbbells, heavy objects, etc., can solve problems such as peeling, affecting the appearance and durability of products, and achieve the effects of easy operation, improved quality and grade, and easy to fall off

Inactive Publication Date: 2013-03-27
NANTONG BAOPENG FITNESS EQUIP TECH
6 Cites 7 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0002] PU dumbbell balls or barbells are the most popular in the field of fitness equipment, but at present, most of the colorful logos on PU dumbbe...
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Method used

[0012] The blank of the dumbbell ball of the present embodiment is to weld the handle and the steel dumbbell head first, and then wrap ...
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Abstract

The invention discloses a manufacture technology of a PU (poly urethane) dumbbell ball or dumbbell piece with a colorful logo. The manufacture technology is characterized by comprising the following steps of: firstly, carving a required logo shape in a mould, putting a blank of the dumbbell ball or the dumbbell piece into the mould, filling the color-mixed color pigment into a carved logo-shaped cavity, adding liquid polyurethane production material into the mould after a solidified layer is formed on the surface of the color pigment, assembling the mould after a solidified layer is formed on the surface of the polyurethane production material, carrying out a high-temperature vulcanization working procedure, opening the mould after the high-temperature vulcanization, cooling, and finishing to obtain a finished product. The manufacture technology provided by the invention is simple in technology, and easy to operate, and an integrated structure is formed by the colorful logo and the PU dumbbell ball or dumbbell piece, so that the problem that the colorful logo is easy to fall off can be effectively solved, and the quality and the level of the product can be improved.

Application Domain

Dumb-bells

Technology Topic

PigmentPolyurethane +3

Examples

  • Experimental program(3)

Example Embodiment

[0010] Example 1
[0011] A manufacturing process of PU dumbbell ball with color logo. Firstly, the shape of the logo is engraved in the mold, and then the blank of the dumbbell ball is placed in the mold, and then the color polyurethane material with the mixed color is filled in the cavity of the logo. After the solidified layer is formed on the surface of the colored polyurethane material, add liquid polyurethane production material to the mold until the mold is filled. After the solidified layer is formed on the surface of the polyurethane production material, close the mold, and then vulcanize at a high temperature of 100°C for 40 minutes. Then the mold is opened, and the finished product is obtained after cooling and trimming.
[0012] In the dumbbell ball blank of this embodiment, the handle and the steel dumbbell head are welded first, and then the polyurethane layer is wrapped. This method makes the product stronger and prevents loosening between the handle and the dumbbell head.

Example Embodiment

[0013] Example 2
[0014] A manufacturing process of PU barbell sheet with color logo. Firstly, the logo shape is engraved in the mold, and then the blank of the barbell sheet is placed in the mold, and then the color polyurethane material with the mixed color is filled into the shape cavity of the logo. After the solidified layer is formed on the surface of the colored polyurethane material, add liquid polyurethane production material to the mold until the mold is filled. After the solidified layer is formed on the surface of the polyurethane production material, close the mold, and then vulcanize at a high temperature of 80°C for 50 minutes. Then the mold is opened, and the finished product is obtained after cooling and trimming.

Example Embodiment

[0015] Example 3
[0016] A manufacturing process of PU dumbbell ball with color logo. Firstly, the shape of the logo is engraved in the mold, and then the blank of the dumbbell ball is placed in the mold, and then the color polyurethane material with the mixed color is filled in the cavity of the logo. After the solidified layer is formed on the surface of the colored polyurethane material, add liquid polyurethane production material to the mold until the mold is filled. After the solidified layer is formed on the surface of the polyurethane production material, the mold is closed, and then cured at a high temperature of 120°C for 30 minutes. Then the mold is opened, and the finished product is obtained after cooling and trimming.

PUM

no PUM

Description & Claims & Application Information

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