PC Electronic Series Mould With SKD61 Cavity Steel
Single cavity PC tool, SKD61 cavity, no slides, pinpoint gate, 50 sec cycle, 600,000 shots.
What This Tool Is
A straight pull PC tool in SKD61, pinpoint gated so the feed can sit in the middle of the part without leaving a stub on a visible face. The tool runs no slides at all and a pinpoint gate. The archived record puts the cycle at 50 sec and the tool life at 600,000 shots.
Polycarbonate runs hot and needs a hotter, more stable mould than ABS. A tool cooled for a styrenic will not hold cycle or finish in PC.
Company catalogue record 172.
Specification And Trade Terms
Mould specification
| Product materials | PC |
|---|---|
| Mould material | SKD61 |
| Cavity | 1 x 1 |
| Slider | 0 |
| Gate | Pinpoint gate |
| Cycle time | 50 sec |
| Warranty | 600,000 shots |
Commercial terms
| Product origin | China |
|---|---|
| Price terms | FOB Xiamen or CIF |
| Payment terms | T/T or L/C |
| Minimum order | 1 set |
| Mould standard | HASCO or DME standard components |
Key Benefits
SKD61 is a hot work tool steel, which is why it is the cavity steel on this a PC enclosure from a product series tool
A pinpoint gate breaks away by itself as the mould opens, leaving a small witness instead of a trimmed stub
A single impression keeps the tool cost down and makes sense until annual volume genuinely outgrows one cavity
With nothing moving sideways there is no slide to wear, no wear plate to grease and nowhere for flash to start
Polycarbonate runs hot and needs a hotter, more stable mould than ABS
Problems It Solves
A tool laid out around ABS cooling will not hold cycle or finish once a polycarbonate grade goes into it
A cold gate on a visible face leaves a witness that somebody then has to trim, colour match or hide
A single impression tool cannot supply a programme once it reaches production volume, and by then the tool is already paid for
Who It Is For And Where It Is Used
Who it is for
- Display and television assemblers
- Electronics brands consolidating enclosure tooling
- IT and communications hardware makers
Application scenarios
- A front shell tool whose trial parts must be checked on a flatness fixture
- Consolidating several small enclosure tools with one supplier
- An enclosure where the connector window has to be a replaceable insert
Technical Features And Materials
Technical features
- SKD61 cavity and core
- 1 x 1 impression layout
- Pinpoint gate feed
- Straight pull construction with no side actions
- Cavity and core rated at 600,000 shots
- HASCO or DME standard mould base components
Customisation options
- Built as a two cavity or multi impression tool where the annual volume supports it
- Cavity steel changed from SKD61 where your moulding grade or your expected shot count calls for something different
- Gate type moved away from the pinpoint gate if the cosmetic face or the degating requirement changes
- Cosmetic features such as texture, logos and part numbers cut as replaceable inserts so a later change does not mean a new cavity
- Mould base built to HASCO or DME dimensions, or to a standard your own tool room already stocks spares for
Materials
- PC
How This Mould Is Made
- Cavity and core blocks are inspected against the specified grade before they enter the machining route
- Cavity geometry is cut on the CNC machining centres from programmes generated off the released part model
- Rib roots, text and internal corners are burned in with EDM electrodes, which is detail no rotating cutter can reach
- Inserts and ejector holes are wire cut so that components drop in to a repeatable fit
- The moulding face is polished to the finish the part needs, which for a plated part is a different grade from a textured one
- Parting line, shut offs and ejection are fitted and spotted by hand at the bench
- The tool is trialled on one of our injection machines and the 50 sec cycle is measured rather than assumed
Quality Control On This Tool
- Incoming cavity and core steel is checked against the grade on the order, not against the delivery note
- Machined inserts and plates are measured between operations rather than only at the end of the route
- Trial parts are measured on the 2D image measuring projector against the dimensions nominated on your drawing
- Corrections found at trial are recorded against the mould number with the date and the reason, so a repair years later starts from what the tool actually is
- Before shipment the water and hydraulic circuits are blown out and plugged and the moulding faces are oiled
Compared With The Alternatives
A two cavity version of the same part
Doubles output per cycle for roughly 60 to 70 percent more tool cost. It pays back above a few hundred thousand pieces a year and not below.
A pre-hardened P20 or 718 tool
Cheaper and faster to cut, but it will not hold this tool's finish for this tool's shot count in this material.
A hot runner version
Removes the runner weight and allows a gate in the middle of the part, at a higher tool cost and with a heated manifold to maintain.
Use And Maintenance Guide
- Run the tool in the PC grade it was trialled with; changing grade changes shrinkage and cavity wear at the same time
- Inspect the pinpoint gate at every service, because gate condition is what decides whether parts come off the tool clean
- With no slides the maintenance is ejection and cooling, so check ejector pin return and flush the water circuits on schedule
- Oil the moulding faces and plug the circuits for any storage longer than a week
- Do not chase the cycle below 50 sec without re-measuring parts; the archived figure already assumes proper cooling
Related Products
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Moulds For Electronic And Audiovisual Parts
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Moulds For Electronic And Audiovisual Parts
Hot Runner Mould With Valve Gate
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Product materials PC/ABSMould material SKD61
Moulds For Other Product Series
ABS Injection Mould With 718 Cavity Steel
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Product materials ABSMould material 718
Industries And Guides
Industry
Electronics And Audiovisual
Television front shells, enclosures and electronic housings in PC and PC ABS
Industry
IT And Communications
Enclosures, covers and moulded detail parts for IT and communications hardware
Comparison Article
Hot Runner Or Cold Runner For Your Injection Mould
When the extra tool cost of a hot runner pays for itself, and when it is money spent on a manifold you then have to maintain.
PC Electronic Series Mould With SKD61 Cavity Steel Questions
What buyers ask about this tool before ordering.
Why SKD61 for this tool?
SKD61 is a hot work tool steel. It holds up to the melt temperature of PC and PC blends and resists the abrasion that filled and flame retardant grades cause at the gate, where a pre-hardened cavity wears first.
What does the pinpoint gate mean for the finished part?
A pinpoint gate breaks away by itself as the mould opens, leaving a small witness instead of a trimmed stub. It needs a three plate mould base, which is part of the tool cost.
What does the 600,000 shots figure actually cover?
It is the cavity and core life the tool was built for, running the nominated PC grade under normal maintenance. It is not a guarantee against damage from a mispositioned part, a press fault or a missed service interval.
Is the 50 sec cycle achievable in our press?
It was measured on a trial here with the mould running PC. Cycle time follows the heaviest section of the part far more than it follows the press, so it should transfer, but confirm your clamp tonnage and cooling capacity with us first.
Do you supply the moulded parts as well as the mould?
Yes. The plant runs injection machines below 600 tons on the same site as the tool room, so a mould built here can be trialled and then run for production without shipping it anywhere.
Get A Quotation For This Tool
Tell us your moulding grade, annual volume and target date and we will come back with a specification you can compare against any other offer.