A method for jointing polyurethane belts and a high-frequency friction jointing tool

Abstract

The invention provides a method for connecting heads of a polyurethane belt and a high-frequency friction connecting tool and belongs to the field of portable tools. The method is characterized in that when the straight linear polyurethane belt is subjected to butt joint, the two ends of the polyurethane belt are in butt joint first, and then one end is firmly in butt joint with the other end after being subjected to high-frequency vibration friction. According to the method for connecting the heads of the polyurethane belt and the high-frequency friction connecting tool, one end of the polyurethane belt is driven by a vibration chuck to generate heat through high-frequency vibration friction, the two ends of the polyurethane belt are in butt joint, and centering of the two ends can be quite well achieved in the butt joint process; the actual connecting time is just a few seconds, long time of waiting for equipment preheating is not needed, connecting operation is completed in a few seconds, and it only takes dozens of seconds for a skilled laborer to operate and dismount; and the strength of the joint is larger than the strength of the portions, not subjected to butt joint, of the polyurethane belt, tensile deformation does not occur, a butt joint part of the belt is full-automatically and precisely controlled, and the joint is smooth.

Description

technical field [0001] The invention belongs to the field of tools for connection, and in particular relates to a portable tool for jointing polyurethane belts. Background technique [0002] Polyurethane round belts or triangular belts are widely used. When using them, it is necessary to butt the straight polyurethane belts together in advance to form a ring. In the prior art, joint tools for polyurethane round belts or triangular belts are divided into two types: connectors and electric soldering irons. When splicing, it is necessary to wait for a long time for the equipment to preheat, then heat and melt the ends of the polyurethane round belts, and then butt them together. The existing polyurethane round belt joints have the following defects: 1. It is easy to cause unevenness of the joint surface due to different pressures. If the pressure is too high, the melted part of the raw materials will be squeezed out of the contact surface. Decrease in strength; 2. Traditional...

AI Technical Summary

Problems solved by technology

The existing polyurethane round belt joints have the following defects: 1. It is easy to cause unevenness of the joint surface due to different pressures. If the pressure is too high, the melted part of the raw materials will be squeezed out of the contact surface. Decrease in strength; 2. Traditional manual connection is prone to misalignment of joint parts, resulting in a decrease in strength. After connection, it is necessary to repeatedly check whether the connection parts are firmly bonded, whether there are air bubbles or other conditions

If the product is damp, bubbles will be generated due to high temperature, which will make the strength of the joint lower, and it will be easy to disconnect after a period of use after being connected, resulting in a waste of manpower and financial resources; 3. Due to the need to heat and melt the joint surface, there is high temperature Risk of contact injury or fire; 4. The work efficiency is very low, and it takes at least five minutes to connect a head when the operator is very skilled; 5. The yield of the joint is low, the temperature is not easy to control, and quality problems occur before the belt breaks Often difficult to inspect with the naked eye

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