What is the matter with the barrel of the injection molding machine that often burns the heating rin

There are several possibilities:

1.Your voltage doesn't match the voltage of the heating coil.

2.The quality of the heating ring is too poor.

3.The power of the heating ring is too small, or the heating ring is not locked, and it is in a heating state for a long time.

4.The failure of the temperature sensing line makes the heating ring work for a long time. Generally, the life of the electric heating ring in the working state for a long time is relatively short. You look for more if there is a problem with this.

There are two main reasons:

1.It is the leakage of glue that burns out the heating ring;

2.If there is a problem with the temperature sensing device (there is a high possibility that the probe will be broken), check and rule it out!

Of course, do you have a problem with your heating coil as well?

Your voltage does not match the voltage of the electric heating ring, and it has reached its service life in the heating state for a long time, so it is better to use the electromagnetic heating ring to save energy and protect the environment.

Definitely not, the servo, and power saving, energy saving and environmental protection, a year to recover the investment cost, cost-effective, if you are interested in the injection molding machine servo energy-saving transformation, a little more Lai Pule servo system.

There could be several reasons for this: the heating control relay is broken, and the heating ring is still heating up even though the temperature has long since arrived. Have an electrician check it out, it should be repaired quickly; The temperature sensing line and the heating ring are incorrectly matched, for example, the blind trembling temperature sensing line of the first section is connected to the second section of Hanshen, so that there is always one section of the two paragraphs that the temperature can not be lowered, and the other section of the temperature can never rise.

If everything is normal with the equipment, then the problem is the material characteristics, indicating that the material itself generates a large amount of shear heat during plasticization. It is recommended to take the following steps: 1. Increase the temperature of the first and second stages; 2. Reduce back pressure; 3. Reduce the melting speed.

There are two possible scenarios.

One is that the stirring speed is fast and the resistance is high.

So generate your own heat.

It is also possible that the material reacts to exothermia.

If you don't want the temperature to be too high.

The cooling system can be added.

Check whether there is a problem with the ** road, the barrel will not automatically heat up.

What should I do about the heat in the barrel of the injection molding machine? I live automatically without electric heat, and I may be able to pass through the condenser tube because of friction.

Reasons for the self-heating of the barrel of the injection molding machine:

1. Internal reasons.

1) There is internal attrition.

In the operation of the core and coil of the injection molding machine, the core and coil are converted into heat due to the hysteresis loss, eddy current loss and copper loss of the coil, so that the temperature rises, and the heat spreads to the surroundings by radiation and conduction, and when the heat and heat dissipation reach a balanced state, the temperature of each part tends to be stable. Iron loss (hysteresis loss and eddy current loss) is basically unchanged loss, which is related to the barrel structure of the injection molding machine, so it cannot be reduced or eliminated during operation; Whereas, copper loss (line loss) varies with the change of load.

2) Poor contact of tap changers.

In the operation of the barrel of the injection molding machine, the tap changer due to insufficient spring pressure, small contact contact, oil film, dirt and other reasons cause the contact resistance to increase, contact overheating is the most common (contact overheating leads to an increase in contact resistance, contact resistance increases, contact overheating increases), and the temperature continues to rise. Especially when switching tap-changers or transformers are overloaded, it is easy to overheat the tap-changer contacts due to poor contact. The main reason for poor contact of tap-changers is that there is not enough pressure at the contact point; There is an oil mud film between the dynamic and static contacts; There are burns on the contact surface or the positioning indication does not correspond to the contact position of the switch, etc.

3) Winding inter-turn short circuit.

Due to insulation damage or aging, there will be a closed short-circuit circulation due to insulation damage or aging of the adjacent turns of the barrel winding of the injection molding machine, which will reduce the number of turns of the winding, and the high-heat generated by the short-circuit circulation will increase the temperature of the transformer, and the transformer will be burned in serious cases. When the transformer winding is short-circuited between turns, an arc light appears at the short-circuit point to heat all parts and the insulation and cooling oil, and a "gurgling" sound can be heard when boiling, which makes the temperature of the transformer rise sharply.

4) The core is locally overheated.

The iron core is made of insulating silicon steel sheets, and the insulation damage between the silicon steel sheets is damaged due to the insulation damage or insulation aging of the core screws during the operation of the transformer, and the eddy current increases, resulting in local heating. No-load losses increase and insulation decreases.

5) Lack of oil in the barrel of the injection molding machine or blockage in the heat pipe.

If there is a lack of oil or the heat pipe is blocked, the circulating cooling speed of the oil decreases, resulting in the temperature increase during the operation of the transformer.

2. External causes.

1) Failure of the barrel cooling circulation system of the injection molding machine.

In addition to cooling and heat dissipation with heat pipes, the barrel of injection molding machine also has forced air cooling, water circulation and other heat dissipation methods, once the cooling and heat dissipation system failure or poor heat dissipation conditions will cause the temperature of the transformer in operation to rise (especially in the hot summer season).

2) The air inlet and outlet of the transformer room are blocked or dust is seriously accumulated.

Once the blockage or dust accumulation is serious, the heating conditions of the transformer do not change and the heat dissipation conditions become worse, and the heat dissipation conditions cannot be dissipated to the surrounding air in time, resulting in the temperature rise during the operation of the transformer.