What is the working principle of the hot runner temperature control box?

The hot runner temperature control box is a continuous hot runner system that needs to maintain the temperature value of the equipment. The utility model is composed of a temperature control card, an air switch, a box body, a fan, a connection terminal and a cable. Rotary thermostat? The hot runner temperature control box is a device that can continuously maintain the required temperature. Use an intelligent computer chip (mcu) to detect the temperature of the hot runner, and then output the appropriate proportional current through the internal data processing of the intelligent computer. The stability of temperature control accuracy mainly depends on the following important factors:

1. Temperature measurement: sampling period parameters, data filtering to determine temperature, temperature compensation measurement circuit, etc. determine the accuracy of temperature measurements;

2. Pid control: by adjusting the output current ratio to reflect the performance-related parameters of the control system are proportional section, integral time and differential time.

3. Control: controlled by the phase angle, and the relevant parameters include proportional segment, integral time and differential time;

4. Automatic adjustment of the hot runner temperature control box: Through the analysis of the wire capacitance and the thermal constant of the mold, the main factors (latent heat and heat dissipation, which help to control the temperature correctly and are not affected by environmental changes) are provided;

5. Output mode: It can be changed according to the environment.

The method to ensure the service life of the hot runner temperature control box! The utility model is composed of a temperature control card, an air switch, a box body, a fan, a connection terminal and a cable. The dimensional accuracy of the hot runner cavity should be processed in strict accordance with the tolerance, and the dimensional accuracy of the hot runner should also meet the tolerance requirements to ensure that the hot runner and the mold meet the requirements. The thickness of the formwork should be considered according to the deformation and strength of the formwork. According to different plastic materials, choose steel with small thermal deformation, especially engineering plastics with high fiber or iron powder or plastic materials with strong corrosiveness, and distinguish the choice and hardness of steel. Generally speaking, the nozzle wears fast, followed by the nozzle heat flow hole. It has a very short lifespan if not handled properly. In general, beryllium copper can be used as the tip of a commercial mouthpiece. Beryllium copper is easy to wear, has a short service life, and is pure natural. When the beryllium copper material is in contact with the polypropylene material, the polypropylene material can dissolve a certain amount of beryllium poison, so that the product is rich in trace and highly toxic. Beryllium copper should be used with caution in medicine and food. Do not select defective heating and temperature sensing elements, defective parts are prone to damage, instability or failure. Some well-known brands of heating elements can be used for 3-5 years without damage and are very stable. Of course, the cost of the hot runner will go up.