Core Selling Points
■ Cold-formed threads with superior strength and surface finish
■ High precision thread profile with ±0.02mm pitch accuracy
■ Production speed up to 350 pieces per minute
■ Adjustable rolling pressure for different materials
■ Long service life of hardened thread rolling dies
■ Quick die change for different thread sizes and pitches
■ Automatic cap feeding and orientation system
■ Suitable for aluminum, tinplate and brass caps
Technical Specifications
|
Parameter |
Specification |
|
Model No. |
KP-TR-350 |
|
Production Speed |
150–350 pieces/min |
|
Cap Diameter Range |
Ø20 – 85 mm |
|
Thread Type |
Internal / External |
|
Thread Pitch Range |
1.5 – 6 mm |
|
Rolling Pressure |
Adjustable hydraulic |
|
Power Rating |
4 kW |
|
Overall Dimension |
1500 × 1000 × 1800 mm |
|
Total Weight |
Approx. 1800 kg |
|
Die Material |
Alloy tool steel / Carbide |
|
Control System |
PLC Control |
|
Certification |
CE |
|
Warranty |
2 Years |
Production / Working Process
Step 1: Cap Feeding – Caps oriented and fed into rolling station
Step 2: Cap Positioning – Cap centered between rolling dies
Step 3: Die Engagement – Rolling dies engage with cap surface
Step 4: Thread Forming – Dies rotate and press to form threads
Step 5: Rolling Cycle – Complete thread profile formed in one revolution
Step 6: Die Disengagement – Rolling dies retract from cap
Step 7: Cap Discharge – Threaded cap exits machine
Step 8: Thread Verification – Optional thread gauge checking
Step 9: Continuous Operation – Automatic cycling production
Application Scenarios
• Aluminum screw cap internal thread rolling
• Bottle cap external thread forming
• Jar lid screw thread production
• ROPP cap pre-thread operations
• Precision threaded closure manufacturing
Case Study
■ Customer Background
A beverage cap manufacturer producing plastic bottle aluminum screw caps. They were experiencing thread inconsistency issues with their old thread cutting machines, causing capping line jams and torque variation.
■ Project Challenge
• Thread torque variation caused 3% capping line downtime
• Needed smoother thread finish for better sealing
• Required 280 caps/min production speed
• Must handle both aluminum and tinplate cap materials
■ Our Solution
• Replaced thread cutting machines with KP-TR-350 thread rolling machines
• Installed automatic cap orientation and feeding system
• Configured adjustable rolling pressure for different materials
• Provided matched die sets for #38 and #43 cap sizes
■ Result & Benefits
• Thread torque variation reduced by 75%
• Capping line downtime from thread issues dropped to 0.3%
• Production speed achieved 300 caps/min
• Thread surface finish improved from Ra 1.6 to Ra 0.4μm
Frequently Asked Questions (FAQ)
Q: What thread standards can you produce?
A: We can produce various standard threads including metric, BSP, NPS, buttress thread and custom profiles.
Q: How does thread rolling compare to thread cutting?
A: Thread rolling cold forms threads by displacing metal, producing stronger threads with smoother surface finish. It is also faster and produces no chips.
Q: What is the life expectancy of thread rolling dies?
A: Premium quality hardened steel rolling dies typically produce 5–10 million pieces before requiring regrinding.
Q: Can the same machine do both internal and external threads?
A: Standard machine is configured for either internal or external threading. Different rolling head assemblies are required.
Q: How do you ensure consistent thread quality?
A: The machine features rigid frame construction, precision die mounting and adjustable rolling pressure.
Q: Do you provide thread measurement equipment?
A: Yes, we can supply thread ring gauges, plug gauges and optical measurement equipment for quality control.
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