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Help CenterHigh-Efficiency Auto-Unscrewing Mold for Threaded Caps - 1x32 Hot Runner, Hydraulic Cylinder, 1M+ Shots
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Changzhou Hongxinyutai Precision Mold Co., Ltd. is a dedicated manufacturer with over 8 years of expertise in precision mold engineering. Our High-Efficiency Auto-Unscrewing Mold for Threaded Caps – featuring a 1x32 hot runner system, hydraulic cylinder actuation, and an engineered lifespan of over 1 million shots – represents a breakthrough in reliable, scalable production of plastic threaded closures. Designed to minimize cycle time while ensuring consistent thread quality, this mold is the ideal solution for high-volume cap manufacturers seeking to reduce downtime and maximize output.
Leveraging our 1,000-3,000 sqm factory and a team of 51-100 skilled professionals, we have refined the unscrewing mechanism to achieve smooth, repeatable ejection without flash or deformation. The hot runner system is precisely balanced for even melt flow across all 32 cavities, reducing material waste and improving part uniformity. Whether you produce caps for bottled water, cosmetics, or industrial containers, this mold delivers exceptional performance under demanding production schedules.
Key Product Features
- 1x32 Cavity Configuration – High output per cycle with consistent quality across all cavities.
- Hot Runner System – Eliminates cold runners, reduces cycle time, and lowers material cost.
- Hydraulic Cylinder Unscrewing – Smooth, precise, and maintenance-friendly actuation for long-run reliability.
- 1M+ Shots Lifetime – Engineered with wear-resistant steel and optimized heat treatment to withstand heavy-duty production.
- Automatic Thread Release – No manual intervention required; caps are ejected straight onto conveyors or collection bins.
- TS16969 Certified Quality Control – Adherence to automotive-grade standards ensures dimensional accuracy and repeatability.
- Customizable Cooling Layout – Conformal cooling channels can be designed to match specific cap geometries for faster cycle times.
- Worldwide Shipping – Available for export via Jiangsu, Shanghai, or Shenzhen ports to all major markets.
Technical Specifications
| Number of Cavities | 32 (1x32 layout) |
| Runner System | Hot Runner (fully balanced) |
| Unscrewing Mechanism | Hydraulic cylinder + rack & pinion |
| Mold Life Expectancy | ≥1,000,000 shots (with proper maintenance) |
| Mold Steel Grade | P20 / H13 / 1.2343 (customizable) |
| Max Part Diameter | Up to 50 mm (dependent on cap design) |
| Cycle Time (estimated) | 8-15 seconds (depending on material and cap geometry) |
| Certification | TS16969 (IATF 16949 equivalent) |
Why Choose This Auto-Unscrewing Mold?
The combination of hot runner technology and hydraulic unscrewing offers significant advantages over traditional cold runner or manual unscrewing molds. Each cavity is independently balanced to ensure identical fill and pack, resulting in uniform thread dimensions and cap weight. The hydraulic cylinder eliminates the need for complex mechanical linkages, reducing maintenance issues and allowing easier integration with standard injection molding machines. Additionally, the mold core is designed to withstand high clamping forces, ensuring consistent part release even after 1 million cycles.
For customers targeting high-volume production of threaded caps – for example, beverage caps, cosmetic closures, or oil/dean container caps – this mold provides a rapid return on investment. The 1x32 configuration delivers up to 32 caps per cycle, and with a typical cycle time of 10 seconds, that equates to over 11,000 caps per hour. The hot runner system further reduces material waste by eliminating sprues and runners, saving up to 15% of raw material compared to cold runner designs.
Customer Benefits at a Glance
- Reduced Labor Cost – Automatic unscrewing eliminates the need for manual cap removal.
- Higher Output – 32 cavities with fast cycle times maximize production per shift.
- Lower Scrap Rate – Balanced hot runner and precise temperature control minimize defects.
- Long Mold Life – Hardened tool steel and robust design reduce replacement frequency.
- Easy Maintenance – Hydraulic system components are easily accessible and replaceable.
- Flexible Customization – We can adapt the mold to your specific cap thread pitch, diameter, and material (PP, PE, HDPE, etc.).
Trusted Manufacturer – Changzhou Hongxinyutai Precision Mold
Since our establishment in 2017, we have grown into a TS16969-certified precision mold maker with a factory spanning 1,000-3,000 square meters and a dedicated team of 51-100 employees. We have shipped auto-unscrewing molds to clients across North America, South America, Europe, Southeast Asia, Africa, Oceania, the Middle East, and domestic markets. Every mold undergoes rigorous testing before leaving our facility, ensuring that the quoted 1M+ shot life is achievable in real-world conditions.
Our engineering team is available to review your cap drawings and provide optimized steel selection, cooling design, and gate placement. We also offer post-delivery technical support and spare parts. Contact us today to discuss your specific requirements – we are confident that our high-efficiency auto-unscrewing mold will elevate your production line.
Frequently Asked Questions
- Q: What materials can this mold process? A: The mold is compatible with most thermoplastics used for threaded caps, including PP, PE, HDPE, LDPE, and ABS. Please specify your material grade for optimal cooling design.
- Q: Can the mold be adapted to different cap thread profiles? A: Yes, the unscrewing mechanism can be customized to match your specific thread pitch, diameter, and number of starts. Send us your 3D drawing for a feasibility study.
- Q: What is the typical delivery time? A: Lead time depends on complexity and current workload, but generally ranges from 30 to 45 working days after design approval.
- Q: Do you offer trial shot testing before shipment? A: Absolutely. We conduct trial runs on our own injection molding machines to verify part quality, thread formation, and ejection. A video report is provided.
- Q: How is the mold maintained for long life? A: Regular cleaning of the hot runner and hydraulic system, plus scheduled lubrication of moving parts, is recommended. We provide a maintenance manual with every mold.
- Q: What is the warranty period? A: We offer a standard 12-month warranty against manufacturing defects. Extended warranty options are available upon request.
- Q: Can you ship to my country? A: Yes, we ship worldwide via Jiangsu, Shanghai, or Shenzhen ports. We have experience exporting to all major markets mentioned in our profile.
- Q: Is the 1x32 hot runner system replaceable if damaged? A: Yes, the hot runner components are modular and can be replaced individually. We stock common spare parts for quick supply.
Get in Touch – For a quotation or technical discussion, please contact our sales team at Changzhou Hongxinyutai Precision Mold Co., Ltd. We look forward to partnering with you on your next high-volume cap project.
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