Basic knowledge of high-frequency waves
1.What is a high-frequency plastic welding machine?
High frequency plastic heat sealing machine (also known as high-frequency plastic welding machine) is a specialized medium heating equipment that uses the principle of high-frequency medium heating to heat seal PVC and other plastics. The device consists of a high-frequency oscillator, a load matching system, a power supply system, an electromagnetic radiation suppression system, a mechanical transmission system, and a workbench.
2. Working principle of high-frequency plastic welding machine?
The high-frequency electromagnetic field is generated by the self-excited oscillation of the electronic tube. Under the action of the high-frequency electromagnetic field between the upper and lower electrodes, the internal molecules of the processed dielectric material (plastic) polarize and align in the direction of the electric field. Due to the high-frequency electric field, the direction changes at an extremely fast speed. As a result, the dielectric material will generate heat due to the violent movement of the internal molecules, and the plastic will achieve fusion under the pressure of the mold.
3.What should I do if the high-frequency plastic welding machine ignites?
High frequency machine ignition has always been a problem for us. In production, accidental ignition can occur, which can cause damage to products or packaging materials, or even burn out gaps in the mold. The consequence is to immediately stop production and notify the supplier to send maintenance personnel to repair the mold, which will seriously affect the production schedule. Our company has developed high-performance spark protection for high-frequency machines, which has unparalleled advantages. Through the management of the entire machine by computer chips, the high-frequency machine completely solves common problems such as mold burning, contact burning, and power grabbing, better protecting electronic tubes and related devices from the impact of current, greatly improving the service life of the machine
4. In the production process of high-frequency welding machines, we try our best to achieve the following:
- Do not make direct contact between the upper electrode and the lower electrode during the lifting cycle;
- The upper and lower molds must be adjusted smoothly;
- The parts in contact with the upper and lower molds must be free of dust and debris;
- Regularly clean the dust in the oscillation bucket and keep the machine working in a clean and ventilated condition;
- Once there is a phenomenon of ignition, please clean the upper and lower molds in a timely manner. The blackened parts must be cleaned thoroughly (alcohol can be used for cleaning).
5. High frequency is widely used, for example（Rotary Table High Frequency Hf Welding、Sliding Table Plastic Welding Machine、Hf Welding Machine For Sandals..）
It is used in textile printing and is called a high-frequency embossing machine or high-frequency embossing machine. It is an alternative printing variety in textile printing. The forms of expression are concave and convex relief effects, and its style is unique in textiles. Although the application of high-frequency in textile printing is simple and easy to learn, it integrates electricity, acoustics, mechanics, physics, and other factors. These factors work together to obtain better products
At present, high-frequency is mainly used for bonding between plastic products, bonding between plastic products and metal accessories, and bonding between other non plastic materials. It replaces solvent adhesives, mechanical fixation, and other bonding processes, and is an advanced assembly technology. High frequency welding not only has the function of connecting and assembling, but also has a moisture-proof and waterproof sealing effect. In today's rapidly developing world, industry insiders are trying to use metal molds carved by computers and digital engraving machines as welding or cutting heads for high-frequency machinery, and then use high-frequency electrical frequency conversion to produce high-frequency products