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

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,...

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.