Dumbbell and barbell products manufactured from composite material and manufacturing method of dumbbell and barbell products

A composite material and product technology, applied to dumbbells, heavy objects, etc., can solve the problems of adverse effects on occupational health and safety, easy cracking during use, poor drop resistance of dumbbells, etc., and achieves the effect of convenient processing, overcoming bottlenecks, and high density.

Inactive Publication Date: 2012-10-24
NANTONG JUNQI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since most of the adhesives are thermosetting materials, the binding force between the iron powder and the adhesive is poor. The dumbbells made by this method have poor drop resistance and are easy to crack after a long time of use.
In addition, most of the adhesives use volatile solvents, which have adverse effects on occupational health and safety.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Grind the iron sand to an average particle size of 500 microns, mix the ground iron sand, high-density polyethylene (HDPE), glass fiber, and calcium carbonate in proportions of 50%, 30%, 2%, and 18% by weight, and mix them uniformly in the Stir at 200-240°C for 60 minutes to form a fluid slurry, add the slurry to a barbell-shaped mold, keep it under a pressure of 0.8MPa for 30 minutes, and then cool to form a barbell product.

Embodiment 2

[0023] The iron sand is ground to an average particle size of 1600 microns, and the ground iron sand, polyvinyl chloride (PVC), and calcium carbonate are mixed evenly in proportions of 40%, 40%, and 20% by weight. Stir at 180-220° C. for 60 minutes to form a fluid slurry, add the slurry to a dumbbell-shaped mold, keep it under a pressure of 1.1 MPa for 30 minutes, and then cool to form a dumbbell product.

Embodiment 3

[0025] The mixture of iron powder and copper powder is ground to an average particle size of 80 microns, and the ground iron powder and copper powder, acrylonitrile-butadiene-styrene (ABS), and carbon fiber are 80%, 15%, and The proportion of 5% is mixed well. Stir at 220-260°C for 80 minutes to form a fluid slurry, add the slurry to a kettlebell-shaped mold, keep it under a pressure of 1.2MPa for 60 minutes, and then cool to form a kettlebell product.

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PUM

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Abstract

The invention discloses dumbbell and barbell products manufactured from composite material and a manufacturing method of the dumbbell and barbell products.The dumbbell and barbell products use a metallic material, thermoplastic polymer, and a reinforcing agent as raw materials. The raw materials are grinded, mixed, melt sirred and moulded in a mold to form the composite material products. The product forms can be dumbbell, dumbbell disc, barbell, barbell disc, kettle-bell, counterweight bar, counterweight disc and the like. The dumbbell and barbell products has the advantages that the raw materials of the products are inexpensive metallic wastes of machining; the products are convenient in process and low in energy consumption compared with the traditional products; the products have the advantages of high strength of the composite material, high density and the like, and the bottleneck of prior arts is overcome; the process does not produce environmental pollution and occupational health injuries during the manufacturing process.

Description

technical field [0001] The invention relates to a body-building and sports product and a manufacturing method thereof, in particular to a low-cost high-quality dumbbell and barbell product and a manufacturing method thereof. Background technique [0002] Along with the raising of people's living standard, body-building and motion have become trend and trend, and dumbbell and barbell are the exercise equipments of common household and gymnasium. There are two main manufacturing processes for dumbbells, dumbbell plates, barbells, barbell plates, kettlebells, weight plates, and weight bars on the market: (1) Cast iron is used as raw material and cast at a high temperature of about 1400°C ; (2) First make plastic shells of dumbbells, dumbbell plates, barbells, barbell plates, kettlebells, weight plates, and weight bars, and then fill them with cement mixture to achieve the required weight. [0003] The production cost of the above cast iron dumbbells, dumbbell plates, barbells,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L25/06C08L33/12C08L27/06C08L77/00C08L69/00C08L23/06C08L75/04C08L27/18C08L67/02C08L55/02C08L1/12C08L59/00C08K3/08C08K7/14C08K3/26C08K7/06C08K3/04A63B21/072
Inventor 马晓龙居富军
Owner NANTONG JUNQI MACHINERY
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