An electromagnetic heating FRP profile pultrusion machine

Abstract

The invention relates to an electromagnetic heating type pultrusion machine for FRP profiles, which includes a forming die, a die clamp, an electromagnetic coil and a controller. In the middle, the electromagnetic coil is sleeved on the forming mold and the mold fixture and connected to the controller, and the two sides of the forming mold are respectively provided with a material inlet and a material outlet. The present invention uses electromagnetic heating to heat only the mold, which has high thermal efficiency and remarkable energy-saving effect; the electromagnetic coil used in the present invention is subjected to heat insulation treatment, which will not age, and the maintenance cost is greatly reduced; the present invention uses electromagnetic heating, only the mold itself is heated, so It will not affect the equipment itself and the surrounding environment, can effectively reduce the room temperature, and improve the working environment; the heating method adopted in the present invention has a fast heating speed, and can easily control the temperature of the mold by controlling the number of coils or the power supply voltage. The control is simple, flexible and high precision.

Description

technical field [0001] The invention relates to an electromagnetic heating type pultrusion machine for FRP profiles. Background technique [0002] At present, the existing heating devices of FRP profile pultrusion equipment on the market are all heated by traditional electric heating tubes, such as figure 1 as well as figure 2 As shown, the heating is divided into three zones, front (A), middle (B), and rear (C). According to the process requirements, the temperature of each section can be adjusted by itself. The profile raw material enters the mold 6 from the material inlet 7 and is preheated. , heating, and shaping, the product is output from the discharge port 8. [0003] It can be seen that there are many disadvantages in this heating method: [0004] 1. This traditional heating method has a large heat loss, and the heat actually applied to the mold 6 is less than 50% of the heat generated by the heating tube 3, and the rest of the heat (greater than 50%) is dissipat...

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Problems solved by technology

[0005] 2. The heating tube 3 is in a high-temperature state for a long time, which is easy to age and damage, has a short service life and high maintenance costs;

[0006] 3. The wasted heat increases the ambient temperature and deteriorates the working environment. The high-temperature fixture is also very easy to cause burns, scalds, and harm to the human body;

[0007] 4. The temperature rise of the heating tube is slow, the efficiency is very low, and the adjustment sensitivity is not high, which is not conducive to the control of the product process

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