Manufacturing method of double-layer scooter wheel

Abstract

The invention discloses a manufacturing method of a double-layer scooter wheel, which comprises the following steps: 1, initial processing of a wheel core part, i.e. preparing a Haff die with a ring-shaped cavity, injecting a polyurethane material with elasticity into the ring-shaped cavity through a glue injection port, heating to a temperature of 90 DEG C to 100 DEG C after completing pouring, enabling the material in the ring-shaped cavity to be cured, and demoulding; 2, shape processing of a wheel core, i.e. carrying out processing by a numerical control lathe, dressing the upper surface and the lower surface of the wheel core into inwards concave arc structures and dressing the periphery of the wheel core into an arch structure with two convex parts; 3, pouring of a cover tire, i.e. preparing a tire on the periphery of the wheel core by a die, enabling the inner side wall of the tire to be tightly attached to the outer side wall of the wheel core, heating to a temperature of 90 DEG C to 100 DEG C after completing pouring, enabling the material in the ring-shaped cavity to be cured, and demoulding; and 4, dressing of a finished product. The wheel core and the tire of the double-layer scooter wheel manufactured by the method disclosed by the invention are tightly attached; and the double-layer scooter wheel manufactured by the method disclosed by the invention has the characteristics of good toughness, strong impact resistance, light weight and flexibility for operation.

Description

technical field [0001] The invention discloses a method for manufacturing a skateboard wheel, in particular to a method for producing a double-layer skateboard wheel by using polyurethane materials with different hardness. Background technique [0002] Skateboarding is a popular extreme sport loved by young people. Skateboards are mainly composed of boards, sandpaper, brackets, wheels, bridge end nuts, bridge nails, buffer pads, bearings, etc. When selecting materials for skateboard wheels, it is necessary to consider that it is suitable for different venues and roads, such as floor pavement, cement pavement, asphalt pavement, etc. No matter what kind of road it slides on, the wheels must have good elasticity, wear resistance, and moderate hardness, and it is also necessary to ensure that the wheels have a sufficient coefficient of friction against the road surface. The traditional skateboard wheel is composed of a tire and a wheel core. The tire is generally made of polyur...

AI Technical Summary

Problems solved by technology

The traditional skateboard wheel is composed of a tire and a wheel core. The tire is generally made of polyurethane (PU), and the wheel core is generally made of aluminum. The disadvantages of the traditional wheel are: 1) The wheel core and the tire need to be fixed with adhesive, The combination degree is not good enough; 2) The surface treatment of the wheel core is required before the tire and the wheel core are combined, and the manufacturing process is complicated; 3) The use of aluminum material as the wheel core increases the weight of the wheel, and the wheel movement is not flexible enough

[0003] In order to overcome the above shortcomings, non-polyurethane thermoplastic materials are also used. The hollow inner ring is covered with a polyurethane outer ring outside the inner ring. However, due to different materials and poor bonding, the load force is small and affects the speed of the skateboard wheel.

Images