The standard process of injection molding baking operation cannot be ignored

I. We need to know the purpose of baking.

To guide the standard operation of baking material, to ensure the quality of baking material, and to prevent various accidents brought about by baking operation.

II. We should pay attention to the scope of the application.

This regulation is used to guide the operation of the baking personnel in the baking operation.

III. Baking procedure and precautions.

The baking personnel must go through strict pre-service training before starting work, and be familiar with the material categories and the color of each product. Material and the drying temperature and drying cycle of various materials. Skilled in changing materials. The operation instructions and operation steps of color change.

A). Preparation work before baking

1). Clean up the drying room

Release the back button, open the drying room and dust collection room, take out the hole screen separator and screen protector separator, clean up with a high-pressure air gun respectively, the powder that is not easy to clean up in the heating cylinder can be blown out with the fan, after the air gun is cleaned up, you must also use a clean cloth to clean and wipe the parts (if it is difficult to clean and wipe the color stains, you can use a little white mineral oil to clean and wipe once first).

2). Preheat the material barrel

After the parts of the drying room are cleaned, assemble the drying room (when assembling, please pay special attention to the upper ring. The lower ring (seal ring) is installed, such as air leakage will seriously affect the drying effect).

B). Packing drying

1). Temperature adjustment

Refer to the "plastic raw material drying temperature reference table" combined with actual experience, adjust the electronic temperature control instrument as appropriate, so that the bimetal thermometer response temperature and the actual temperature match.

2). Air volume adjustment

The adjustment of the air volume has a great relationship with the drying effect, generally, the best effect when all open, such as in the case of barrel memory material is not much or need a higher temperature, you can adjust the air volume as appropriate to reduce the heat loss, otherwise can not achieve the expected drying effect.

3). Raw material filling the barrel

Raw material filling, to ensure that "full barrel", that is, the number of raw materials in the barrel fill not less than 70% of the total amount of material, so as to avoid uneven drying effect or make the drying time too long.

4). Drying of transparent raw materials

Transparent material drying must be in the air inlet device air filter "original sponge", etc., to prevent the entry of dust into the air.

IV. Dryer maintenance and maintenance

1). The air inlet filter should be cleaned frequently, when the filter is blocked, the air inlet volume will be reduced, which will affect the drying effect.

2). In the drying process, the powder material falls into the hopper. Heating cylinder, day after day silt accumulation, so you need to regularly remove (especially for a long time without changing the material. Not changing the color of the dryer is very necessary).

3). If the temperature is too high, raw materials in the guard screen lump, raw materials can not fall, at this time it is strictly prohibited to use iron bars and other hard objects scraping, to protect the screen hole separator damage, should be the material bucket first decomposition, remove the proper treatment.

4). Ten minutes after closing the electric heat, and then close the fan to ensure that the electric cylinder is fully cooled to extend its service life.

5). In the drying process, you must often inspect the working condition of the dryer, if there is an abnormality should immediately stop for refurbishment, to be opened and used again after the fault is removed.

V. Plastic raw material drying temperature reference table