Method for fixing Velcro connecting piece to automotive pedal pad

Abstract

The invention relates to a method for fixing a Velcro connecting piece to an automotive pedal pad, which is characterized in that: a Velcro connecting component is adhered to the pedal pad to form a whole through a plastic film ring, ultrasonic welding heating is adopted, the obtained heat makes the three welded objects quickly molten, adhered and fixed to the back of the pedal pad, and a clear joint surface of the three, having a grid welding rib concave-convex three-dimensional appearance and high peel strength characteristic, is formed. The film ring is made of polyethylene or other materials, and can cover the surface of the Velcro connecting component or be arranged between the Velcro connecting component and the pedal pad; the thickness of the film ring is between 0.1 and 2mm; and the shape of the film ring is the same as that of the Velcro connecting component, and is a specific figure such as a circle and the like. The welding process adopts the following conditions: the vibration frequency is 30,000-50,000 / second; the welding time is 2-10s; the vibration pressure is 100-300Kpa; and the vibration amplitude of bottom stitches is 0.1-2mm. The method has the advantages of short time, easy control, wide material selection range and no harmful gas.

Description

Technical field: [0001] The invention relates to a method for fixing a Velcro connector on a connected body, in particular to a method for fixing a Velcro connector on a foot pad for an automobile. The fixing method is applied in the field of automobiles and other vehicles, and the Velcro connector is fixed on the foot pad in the car. Background technique; [0002] Velcro is the translated name of "Velcro". He is actually a new type of connector invented by the Swiss Mr. Georgede Mestral in the 1940s. It can also be called Velcro, male and female buckles, Velcro and its adhesive Buckle and other names. [0003] Specifically, it consists of a hook part called Velcro hook or male buckle, and another terry part called Velcro loop or female buckle. When the connected parts are combined, they can be collectively referred to as Velcro connectors. When the two parts of the two different buckles, namely the loop and the hook, are combined together, the connection between the two ...

AI Technical Summary

Problems solved by technology

[0014] It can be seen from the above that this method solves the shortcomings of the damaged shape and difficult assembly and disassembly of the aforementioned two connection methods. Strength, and maintain a firm connection that is easy to assemble and disassemble without destroying its appearance. Due to the excellent characteristics of this connector, manufacturers have made Velcro connectors into standard products for vehicles such as "BMW". In high-end cars, however, there are many defects in this method of heating by hot-melt method, such as long process time, difficult process control and bad gas escape during processing, the appearance of the finished product is not beautiful enough, and the application range of raw materials is narrow, only The plastic film ring material with a low melting point can be selected. If a plastic film ring with a melting point exceeding 150°C is used, it will damage the shape of the car interior carpet at the same time when it is heated and melted

In addition, the welding joint surface is smooth and flat, which reduces the contact surface between the plastic film ring and the fluff structure of the automobile foot pad, so it will affect the peel strength between the Velcro connection sub-parts and the automobile foot pad