Injection Molding Machine Tool I believe we all know that the main production of a plastic tool is a tool; general injection mold in the manufacturing process, we often encounter some of the more common problems, such as often found black spots, or is caused by injection molding products Decolorization, coking, etc. However, the main reason for these problems is that the injection molding product stays in the barrel for too long, which leads to the decomposition and coking of the injection molding product and the formation of the injection molding cavity along with the melt. What are the possible factors of black spot color change in injection molding machines in injection molding machines? Below, the servo energy-saving injection molding machine will share with you!

1, machine side:

(1) The operation of the heating control system on the machine is malfunctioning, which causes the inside of the cylinder to overheat and decompose black.

(2) Because the defects of the screw and barrel cause the melt to stick and accumulate, the plastic is decomposed after the machine has been fixed and heated for a long time. At this time, the worker needs to check whether the rubber head kit is worn and whether there are metal foreign objects inside.

(3) Some plastics will cross-link and coke due to high heat while maintaining almost the original particle shape. These plastics are difficult to melt, so that they are finally entrained into the parts after being broken by the screw pressure.

2, mold:

(1) Generally, the mold on the mold is easy to scorch if the exhaust gas is not smooth, and the size of the gating system of the mold is too small, or the coking caused by excessive shearing.

(2) The use of anger-appropriate oil type lubricants, mold release agents, etc. in the mold will also cause black spots.

3. Plastics:

Excessive plastic volatiles, excessive humidity, excessive impurities, too much recycled material, and contamination.

4, processing:

(1) The pressure is too high, the speed is too high, the back pressure is too large, and the speed is too fast to decompose the material temperature.

(2) The barrel should be cleaned regularly to remove additives that are inferior to plastics.

  The above is the information shared by the servo energy-saving injection molding machine: For more details, please visit our official website: http://www.gdruibao.com/