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Unscrewing
Unscrewing
Unscrewing Mold for Pipe Fitting Parts
Threaded Y-type pipe fitting in 30% GF PA66, two-cavity unscrewing mold with sealing-critical threads.
30% GF filled PA66AISI H132 cavities
Engineering detailsUnscrewing
Click to zoomUnscrewing Parts
Unscrewing Mold for Threaded Cap Parts
Two-cavity DIN 1.2344 unscrewing mold producing threaded PA66 caps without stripping the thread.
| Part material | PA66 |
|---|---|
| Cavity / core steel | DIN 1.2344 |
| Runner system | Cold runner |
| Cavities | 2 cavities |
| Processing | Plastic molding |
| Mold standard | HASCO |
Free DFM reviewMoldability checked before quoting
T1 samples + FAIApprove before production
NDA on requestYour design stays confidential
ISO 9001:2015Inspection at every stage
Description
Unscrewing molds for threaded caps
A threaded cap cannot simply be pushed off its core: a full, deep thread would be damaged or the part would deform. This PA66 cap is released by an unscrewing mold, in which the threaded core rotates out of the part before ejection. The result is a complete, accurate thread that seals properly on its mating part.
Tool construction
- Two cavities in DIN 1.2344, a hot-work steel suitable for hardening and long runs.
- HASCO standard base, cold runner.
- Rotating threaded cores driven through a gear train; the cavity side holds the part with anti-rotation features so it does not turn with the core.
- Core and gear components machined and fitted to tight tolerances so the thread pitch and start position are repeatable.
Cylinder or motor drive?
Unscrewing can be driven by a hydraulic cylinder with a rack, or by a hydraulic or electric motor. A cylinder drive gives an exact start and end of rotation and is easy to control, but it needs more space. A motor drive is compact but harder to stop at an exact position because of inertia. We choose the drive based on thread length, cavity count and the press the mold will run on.
Every unscrewing mold is run on our presses at T1 so the thread, sealing face and cycle are proven before shipment.
Specifications
| Part material | PA66 |
|---|---|
| Tooling made in | China |
| Cavity / core steel | DIN 1.2344 |
| Runner system | Cold runner |
| Cavities | 2 cavities |
| Customer | Plastic molding company |
| Processing | Plastic molding |
| Mold standard | HASCO |
| Category | Unscrewing Parts |
Applications
Typical applications for this kind of part:
- Threaded caps
- Filter housings
- Pipe and hose fittings
- Fluid connectors
Have a similar part?
Upload drawingSend the drawing and we will quote it using this project as a reference.
How we work
How a project like this works
- Tell us what you need – the mold only, molded parts, or both, and your estimated annual volume.
- Send drawings – STEP, IGES, STL, DWG or PDF, or a sample. We sign off moldability in a DFM review.
- Quotation – tooling price, part price and a schedule, with steel, cavities and runner proposed.
- Mold design approval – you approve the 3D mold design before steel is cut.
- T1 samples + FAI report – production or mold shipment starts after your approval.
Shipping molds and parts
- Molds are cleaned, rust-protected, marked and checked against a shipment checklist: cooling circuits, sprue, locating ring, ejection and support pillars.
- Molds ship with drawings, a spare-parts list and the T1 process sheet.
- Parts are packed to your packing instruction and inspected before shipment.
- We ship to customers in Europe, the USA and Asia.
After-sales
Our after-sales team supports mold maintenance and modifications remotely and can supply spare inserts. Contact customerservice@precisemoulds.com.
FAQ
When does a part need an unscrewing mold?
When it has full internal or external threads that cannot be stripped or collapsed off the core without damage, especially in rigid or glass-filled materials and on sealing threads.
Why choose DIN 1.2344 for an unscrewing mold?
DIN 1.2344 (similar to H13) can be hardened for wear resistance and keeps its strength at molding temperatures, which suits rotating threaded cores that see friction every cycle.
Can unscrewing molds have multiple cavities?
Yes. Several cores can be driven by one gear train. We build multi-cavity unscrewing molds where volume justifies it.
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Plastic Molding for Pipe Connectors
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Engineering detailsGet a quote
Have a similar part? Get an engineer’s DFM review.
Share a 3D file, 2D drawing, sample photo or sketch. A mold engineer — not a sales robot — checks moldability before we quote tooling and part price.
- 1Upload STEP / IGES / STL / DWG / PDF. We sign an NDA on request.
- 2We review wall thickness, draft, gating, undercuts and tolerances, and propose steel, cavities, runner and mold standard.
- 3You receive the mold and part quotation, with a free design check (DFM report) showing any risks we found.
Quotessales@precisemoulds.com
Engineeringengineering@precisemoulds.com
After-salescustomerservice@precisemoulds.com
Phone+86 755 8951 6139