A.     PART DATA / LINE UP INFO

CKD

1.     Has the job folder been Created?

2.     Have part edits been reviewed?

3.     Kick off notes reviewed?

4.     Has the customer specs been reviewed?

5.     Has die draw been supplied by the customer or determined by the designer?

6.     Has draft analysis been run with  minimum draft established?

7.     Is draft analysis copy included with folder and checklist?

8.     Has the part been completely reviewed for molding?

9.     Is part data complete?                 ISM & OSM?

10.   Are part changes required?  If so, are sketches attached?

11.   Do all ribs have adequate draft?

12.   Are ribs too thick at the base?  (40% - 50% Max.)?

13.   Do bosses have adequate draft?  (Min. 0.5° on O.D. & I.D.) ?

14    What is the shrink factor?

15.    Are parts identical?                         Mirrored or rotated?

B.     RUNOFF

1.     Has the parting line been completely defined?

2.     Is relief shown?

3.     Are vents shown?          With a blow up detail of vent on the sheet the vents are on?

4.     Is runoff complete?

5.     Do mold locks have counter locks?

6.     Are all locks on 10°?

7.     Is shutoff shown on correct half of mold?

8.     Can the return pins fit into shutoff?

9.     Is there shutoff around drops and runners (Min. 1.00)?

10.   Is there clearance in the core for hot drop expansion? (Wafer if possible)?

C.     GATING

1.     Have gate and drop locations been supplied or determined?

2.    Are gates balanced and shown complete?

3.    Are all runner sizes and locations shown?

4.     Are gates shown in a 4X size view?

5.     Is a manifold or sprue required?

6.     Are cashew inserts and screws designed if required?

D.     MOLD SIZE

1.     Does mold fit into customer’s press?

2.     Do parts clear tie bars?

3.     Is part completely de-molded?

4.     Are stack up dimensions and high point shown with overall block sizes called out?

5.     Is “O” corner shown?

6.     Does mold fit min. and max. shut height?

7.     Is top of mold and operator’s side called out?

9.     Are eyebolts / clamp slots shown?

10.   Eyebolts to correct size?

11.   Eyebolt sheets filled out?

12.   Eyebolts designed in all loose pieces weighing in excess of
         40 pounds?

13.   Has 0,0 been set to CL of Core?

E.     Lifters

Chk’d

1.     How many lifters?

2.     Do lifters travel without any interference?

3.     Are lifter pocket covers surfaced and on the correct
         layers?

4.     Are all fillets correct size?

5.     Are the layers all correct?

6.     Are all lifters written out individually, labeled, and named properly?

7.     Do lifters & labels match design file?

8.     Is edm required?

9.     Are block-ups complete with sizes and setups?

10.   Are lifter rod pinning requirements on block-up sheets for
         straight up lifters?

11.   Are rib cuts required and complete?

12.   Have designs been compared for lifter material?

F.     SLIDES & CORE PULLS

CKD

1.     How many slides?

2.     Do slides have sufficient room to travel in slide pocket?

3.     Do slides have 5 or 3 lead in?

4.     Are slide wear plate pockets surfaced?

5.     Are all fillets correct size?

6.     Are the layers all correct?

7.     Are all slides written out individually, labeled, and named properly?

8.     Do slides and labels match design file?

9.     Is edm required?

10.   Are block-ups complete with sizes and setups?

11.   Are core-pull block-ups required and complete?

12.   Are screw locations required and incorporated into surface file?

13.   Are rib cuts required and complete?

14.   Have designs been compared for slide & core-pull material?

G.     INSERTS

CKD

1.     How many inserts?

2.     Are inserts burned or cut?

3.     ONLY if cut, is insert tapered 3-5 deg?

4a.   ONLY if cut, are pocket covers surfaced and on the correct layers?

4b.   ONLY if cut, are all fillets correct size?

4c.   ONLY if cut, are inserts written out as individual files?

4d.   Is the insert cleared correctly for spotting?

5.     Are the layers all correct?

6.     Do inserts & labels match design file?

7.     Are screws and dowels shown?

8.     Is edm required?

9.     Are block-ups complete with sizes and setups?

10.   Are screw locations required and incorporated into surface file?

11.   Are rib cuts required and complete?

12.   Have designs been compared for insert material?

H.     SLEEVES

1.     Are sleeves required?

2.     How many?             Are spares required?

3.     Are they standard Ø and lengths?

4.     Are carrier/extensions required to keep standard length?

5.     Has the sleeve been designed to achieve between .75”-2” ream on ID?     ¾” for the OD?

6.     Have the sleeves been labeled and sections cut through all of them?

7.     Do the sections have depths of part from core surface and the ID and OD dimensioned?

8.     Are sleeve assemblies ready to fabricate?

9.     If special size sleeves are required, are they ordered?

I.     CORE  PINS (BLIND & THROUGH)

2.     If pin are through pins, are they keyed?

4.     What is the purpose?

5.     Are pins shown complete?

6.     Are pins dimensioned at part area to show depths, ø, and draft?

7.     Are pins labeled in Planviews & Sections?

J.     CORE PULLS

 CKD

1.     Are core pulls required?

3.     How many are required?

4.     Are sections cut through all core pulls (and labeled)?

5.     If hydraulic, is design complete:

        a.   Is cylinder mounting shown?

        b.   Is standard pin carrier used?

        c.   Have cylinder orders been written, checked, and given to
               purchasing?

        d.   Is pin carrier keyed and retained?

6.     Is pin carrier spring loaded?

7.     Is part feature formed by pin dimensioned with tolerance?

8.     Are core pull assemblies ready to fabricate?

K.     WATER SPECIFICATIONS AND REQUIREMENTS

1.     Have the customer’s specs been reviewed?                Incorporated?

        Line Ø |                     |     Bubbler size ø (Standard std. 1 size larger than water line ø)

        Fitting type (Main connections)           |   Counterbores               |

        Circuit layout (i.e. flood, forced)         |    Mainforld or Valves   |               |  Hose color or type

L.     WATER DESIGNS

1.     Are sections cut through all lines and labeled X or Y value?

2.    Are any coolant lines taped into core steels?

3.     Are all lines labeled in Plan Views with PL heights?

4.     Do all sections match PL labels?

5.     Are all in’s, ou’ts, and loops labeled?

7.     Water line spacing suitable for part and mold size?

8.     Bubblers, spacing same as WL spacing?

M.     EJECTION

CKD

1.     Are ejector pins std. Ø and lengths?

3.     Are pins near all ribs and bosses (2 per feature as close to ribs as possible)?  (.060)

4.     Are all pins pushing on best possible areas?  (Rads, walls, etc.)

5.     Has ejector pin program been run to verify pins are pushing in best location?

6.     Is proper/standard ream shown ¾” standard for injection molds?

7.     Is proper/standard ½” ream shown with .06 dia. clearance for compression molds?

8.     Is proper ream shown for gate and runner pins and special (non-std.) ream noted?

9.     Are ring pins required?   Are they called out in P.V.?    Is there a blow-up view?

10.   Are return pins shown complete with clearance for screw if applicable?

11.   Are return pin springs required?          If yes, are they shown?

N.     HYDRAULIC EJECTION

1.     Is hydraulic ejection required?   

2.     Are cylinders shown complete & designed to customer specifications?

        A.  Dowels?                        B.  Retainer Key?     
        C.  Mounting Plate?        D.  H-Nut?

        E.  Have cylinders been ordered?

3.     Is hydraulic routing through rails?    If yes, is it shown?

5.     Are limit switches shown & protected?

O.   MISCELLANEOUS

1.     Are standoffs required/shown?

2.     Are safety straps shown?

P.     EJECTOR BOX 

1.     Knock outs work for customer’s press?

2.     Knock outs work for tryout press?

3.     Knock out clearance size 2.25 Ø clearance or 1.25 Ø clearance?

4.     Knock out threads called out?

5.     Rest buttons designed to Standard std?

7.     Rest buttons 6-8” apart on small molds and 8-10” apart on large molds?

8.     Are ejector screws required for pin plate?

9.     Is .50 Ø jack screw shown on or near CL?

10.  Are .50 Ø dowels shown on CL?

11.  Are forward stops required?    If yes,

        Is there only 4?

        Are they near K.O. and hydraulic ejection cylinders?

12.   Are they support designed?

13.   Do support have ½” Ø socket head cap screw?

14.   Is the ejector guide pin assembly to Standards?

        Is the ejector guide pin assembly design complete?

15.   Are handling holes shown & the same size if possible in all of the following components?

       a.   Top of ejector plate?

       b.   Top or retainer plate?

       c.   Top of clamp plate (over 60” also in ends)?

16.   If quick kickers are required, are they designed?

17.  Is there clearance for lifter rod access?

A.     EJECTOR BOX & CAM MACHINING (Continued)

19.   Does clamp plate require valve gate manifold accommodations?

       a.   Pockets for valve gate cylinders?

       b.   Channels for valve gate plumbing?

       c.   Is water required in clamp plate for valve gate cooling?

20.   Is standard H-Nut used for hydraulic ejection?

       a.  Main ins and outs.  (Type?   Location?)

       b.   Are flow dividers required?

22.   Is manifold electrical designed to customer specs?

23.   Are plaques and schematics required?  If yes, are they designed?

       a.  Water?

       b.  Hydraulics?

       c.   Electrical?  

       d.   I.D. tab?   (ALWAYS REQUIRED)

       e.   Any special purpose plaques?

24.   Is stock list and purchase list complete?

25.   Have the final prints been sent to the customer?

26.   Has the customer approved the designs?