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Changzhou Hongxinyutai Precision Mold Co., Ltd. has been dedicated to manufacturing high-precision injection molds since 2017. Our Automatic Unscrewing Mold for Auto Dual Port Tubing Fastener is engineered to produce PPA (Polyphthalamide) components that withstand extreme temperatures in engine cooling systems. Designed with advanced unscrewing mechanics and dual-port geometry, this mold ensures consistent, flash-free production of reliable fasteners. Backed by our TS16969 certified quality system, we deliver molds that maximize uptime and part quality for automotive applications.
Key Features & Technical Specifications
- Automatic Unscrewing Mechanism: Integrated rack-and-pinion or hydraulic core pull system eliminates manual unscrewing, reducing cycle time by up to 20%.
- Dual Port Design: Optimized gate and runner layout ensures balanced fill for complex dual-port tubing fasteners, minimizing weld lines and void defects.
- PPA Material Compatibility: Mold steel (e.g., S136, 8407) is hardened and polished to withstand the high melt temperature (280-320°C) and abrasive nature of PPA compounds.
- High Temperature Cooling Circuits: Conformal cooling channels maintain uniform mold temperature, critical for PPA crystallization control and dimensional stability.
- Precision Alignment: Guide pins, bushings, and interlocks guarantee positional accuracy within ±0.01 mm for extended production runs.
- Ejector System: Hydraulic or mechanical ejectors combined with unscrewing action to safely release the threaded fastener without damage.
| Mold Base Standard | LKM / HASCO / DME (customizable) |
| Cavity/Steel Grade | 1.2344 (ESR) / 1.2083 (optional) |
| Max Clamping Force | 100-300 tons (depending on part size) |
| Unthreading Rotation Angle | Up to 1080° (3 full turns) per cycle |
| Mold Life Expectancy | 500,000+ cycles under normal PPA processing |
| Cooling Channel Diameter | Φ6-12 mm conformal |
Customer Benefits
By choosing our automatic unscrewing mold, you gain a production solution that reduces labor cost, improves cycle repeatability, and yields parts with excellent thread accuracy. The dual-port design enables faster filling and lower injection pressure, extending tool life. PPA-resistant steel grades prevent corrosion and wear, ensuring consistent output even when processing high-temperature engine cooling components. Our molds are supplied with complete documentation, including 2D/3D drawings, run-in reports, and recommended process parameters.
Company Trust & Capability
Established in 2017, Changzhou Hongxinyutai Precision Mold Co., Ltd. operates a 1,000-3,000 sqm factory with 51-100 skilled employees. We hold TS16969 certification, reflecting our commitment to automotive quality standards. Our port of shipment includes Jiangsu, Shanghai, and Shenzhen, providing flexible logistics for global customers. We have successfully delivered molds to North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. Our engineering team uses CAD/CAE/CAM software to optimize gate, cooling, and unscrewing mechanisms before steel cutting, minimizing trial-and-error. For this specific automatic unscrewing mold, we provide a 12-month warranty on workmanship and a 24/7 technical support hotline. Contact us today to discuss your custom requirements and receive a competitive quotation.
Frequently Asked Questions
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Q: What is the typical lead time for this mold?
A: Lead time ranges from 30 to 45 working days, depending on cavity count and complexity. We can offer expedited service for an additional fee. -
Q: Can the mold accommodate other materials besides PPA?
A: Yes, the mold design can be adapted for other high-temperature engineering plastics such as PPS, PEI, or LCP. We will adjust gate locations, cooling, and steel grade accordingly. -
Q: Do you provide sample parts for testing before shipping?
A: Absolutely. We perform full run-in tests with your specified material and provide up to 200 sample parts along with a trial report. -
Q: How is the unscrewing mechanism driven – hydraulic or servo?
A: We offer both hydraulic motor and servo-electric options. The servo version provides precise speed control and lower energy consumption, while hydraulic is more robust for heavy-duty cycles. -
Q: What maintenance is required for the automatic unscrewing system?
A: Regular lubrication of gears and sliding components is recommended every 50,000 cycles. We supply a maintenance manual and spare parts kit. -
Q: Can you customize the mold for different thread forms (e.g., buttress, ACME)?
A: Yes, we design the unscrewing core based on your thread geometry. Provide a part drawing and we will optimize the lead angle and rotation stroke. -
Q: What is your warranty policy?
A: We offer a 1-year warranty covering defects in workmanship and materials. Issues due to improper operation or wear are not covered but we provide quick repair service at cost. -
Q: Do you ship molds to Thailand?
A: Yes, we frequently export to Southeast Asia, including Thailand. Our shipping team handles all customs documentation and can arrange door-to-door delivery.
All molds are built to customer specifications. Contact our sales team for a detailed technical proposal and pricing.
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