How to Troubleshoot the Plastic Pelletizing Machine?

Pulished on Jun. 24, 2019

What is the cause of the failure of the Plastic Pelletizing Machine? Is there any solution? Let me share with you the reasons of malfunctions and the methods to solve it.

Plastic Pelletizing Machine

Plastic Pelletizing Machine

1. The plastic pelletizing machine’s screw runs normally but does not discharge.

Reason: the feed of the hopper is not continuous; the foreign matter in the feed port is blocked or “bridging”; the hard metal inside the screw groove blocks the screw groove and cannot be fed normally;

Treatment method: increase the feeding amount to make the screw feeding continuous and stable; stop the foreign matter in the material port to eliminate the phenomenon of “bridge”; if it is confirmed that metal foreign matter falls into the screw groove, immediately stop the disassembly screw to remove metal foreign matter.

2. The host does not rotate or stops instantaneously.

Cause: the power of the main motor is not turned on; the heating and heating time is insufficient, or one of the heaters does not work, causing the torque to be too large to overload the motor.

Treatment method: check whether the host circuit is connected, turn on the power; check the temperature display of each segment, confirm the warm-up temperature rise time, check whether the heaters are damaged or have poor contact, and eliminate them.

3. Vent hole drops material.

Reason: the raw materials are not clean enough with impurities; the feed rate is too fast to make the screw extrusion unstable; the plasticizing temperature is not enough for screw extrusion.

Treatment method: clean the raw materials and then feed or replace the filter; reduce the feed amount to make the plasticized stable screw smoothly squeeze; increase the plasticizing temperature (the temperature should not be too high to prevent burn plastic and affect the production quality).

4. The main motor rotates, but the screw does not turn.

Cause: the transmission V has a loose bandwidth, wear and slip; the safety button is loose or disconnected.

Treatment: adjust the V-belt center distance, tighten the belt, or replace the new V-belt; check the safety key, analyze the cause of the break, and replace the safety key.

If you have any other questions, please feel free to contact us, who is a professional Plastic Pelletizing Machine Supplier.

+86 188 6272 8810
  • Contact: Angella.JI
  • Skype: Angella.JI
  • Mob. : +86 188 6272 8810
  • WeChat: +86 188 6272 8810
  • WhatsApp: +86 188 6272 8810
  • E-mail:
  • Add1: No.6 JingYi Road, Chengdong Town, Hai'an City, Nantong City, Jiangsu Province
  • Add2: No.5, Shuangfeng Road, Development of Zhaofeng, Leyu Town, Zhangjiagang City, Jiangsu Province, China