PA (nylon) screw is DSBM-T MADDOCK Barrier type mixing conveying screw which can perfectly adapt to the PA material which is with high thermal sensitivity, flowability and melting viscosity, thus ensuring uniform plasticization and high output efficiency.
Core rods and die are made of Sweden "ASSAB" S136 die steel, precision grinding, which ensures the internal flow surface glossiness and anti-corrosion. Structure of mold adopts "high pressure volumetric type", which is initiated by our company, can provide stable and high-speed extrusion for the tube material with tiny fluctuation.
With the new technology of "automatic accurate control of vacuum" : vacuum and water system controlled separately. In this way, we can coordinate the multi-level water balance control system with vacuum system, ensuring stable vacuum degree, cooling water level and water flow.
High performance Laser measuring system, forming closed-loop feedback control, eliminating diameter deviation on-line.
Puller equipped with multilayer wear-resisting synchronous belt, without sliding phenomenon. High level precision roller drive traction, YASKAWA Servo driving system or ABB AC driving system, realize extremely stable pulling.
Based on Servo driving system, Japan Mitsubishi PLC programmable control and SIEMENS human computer interface, cutter can realize precision continuous cutting, timing cutting, length counting cutting etc. Cutting length can be set freely, and cutting times can be set automatically, which can meet with different cutting requirements of different lengths.
Frequently Asked Questions
Q: What makes the PA (nylon) screw design unique for high viscosity materials?
The PA screw uses a DSBM-T MADDOCK Barrier type mixing conveying design. This specifically addresses the needs of PA materials featuring high thermal sensitivity, high flowability, and high melting viscosity, resulting in uniform plasticization and optimal output performance.
Q: What materials are used to ensure the durability and precision of the core rods and die?
They are manufactured using high-grade Sweden "ASSAB" S136 die steel. Precision grinding ensures high internal flow surface glossiness and strong anti-corrosion properties. The "high pressure volumetric type" mold structure provides high-speed, stable extrusion with minimal deviation.
Q: How does the vacuum control system maintain stability?
The technology separates the control of the vacuum and water systems. This coordinates the multi-level water balance and vacuum systems, delivering stable vacuum degrees, precise cooling water levels, and consistent water flow.
Q: How is the product's outer diameter deviation controlled?
A high-performance online Laser measuring system is integrated to form a closed-loop feedback control loop, allowing for real-time adjustments and the elimination of diameter deviations during production.
Q: What drive systems control the pulling and cutting mechanisms?
The pulling mechanism is powered by high-precision roller drives utilizing YASKAWA Servo or ABB AC systems. The cutting mechanism relies on a Servo driving system, Japan Mitsubishi PLC, and SIEMENS HMI, enabling highly precise continuous, timing, and length-counted cuts.
Q: What is the relationship between cutting length and accuracy?
The cutting accuracy scales based on length requirements. It achieves ±0.5 mm for cutting lengths of 50 mm or less, and maintains ±3.0 mm accuracy for lengths up to 2000 mm.
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