EASE OF MOLD LIFTING AND SETTING.
1. WILL MOLD FIT THE END USE MOLDING PRESS?
2. MOLD SHOULD HAVE EYEBOLT HOLES & SAFETY STRAP
3. MOLD SHOULD HANG LEVEL TO ALIGN WITH LOCATING
RINGS & K.O.S
4. MOLD SHOULD OFFER PROTECTION TO EXTERNAL WIRING,
WATER FITTINGS ON BOTTOM OF MOLD, LIMIT SWITCHES,
ETC.
5. MOLD SHOULD HAVE CLAMPING SLOT POSITIONED SUCH
THAT SUFFICIENT CLAMPS CAN BE USED TO SECURE
MOLD TO PLATENS
6. ALL WATER FITTINGS SHOULD BE POSITIONED SO THAT
NOT IN INTERFERENCE WITH MOLD CLAMPS,MACHINE
DOORS, TIE BARS, ETC.
7. MOLD SHOULD HAVE SUFFICIENT EYEBOLTS SO THAT MOLD
ROTATION CAN BE ACHIEVED WITH A SECOND EYEBOLT
AND HOIST.
8. SPRUE RADIUS SHOULD BE COMPATIBLE, SPRUE RECESS ID
SHOULD BE COMPATIBLE WITH MACHINE'S NOZZLE/HEATER
BAND OD
9. MOLD SHOULD HAVE TOTAL WEIGHT LISTED ON CLAMPING
PLATE
10. SOCKET HEAD CAP SCREWS RETAINING CLAMPING PLATE
SHOULD BE SLIGHTLY BELOW FLUSH TO PREVENT PLATEN
DAMAGE.
11. ELECT. RECEPTACLES SHOULD BE ACCESSIBLE & AWAY FROM
WATER FITTINGS.
BASIC MECHANICAL FUNCTIONALITY
12. WATER LINE SHOULD BE FREE FLOWING; CHECK WITH FLOW
METER/INDICATOR OR DIRECT RETURN INTO BUCKET TO
OBSERVE FLOW.
13. EJECTOR PLATE SHOULD RETURN FREELY AND COMPLETELY.
14. SLIDE SHOULD MOVE FREELY, BUT BE RETAINED DURING MOLD
OPEN IN THE PULLED POSITION.
15. LEADER PINS SHOULD NOT EXHIBIT GALLING
16. ALL MOVING SLIDE SURFACES AND SLIDE LOCKS SHOULD BE
FREE FROM GALLING.
ELECTRICAL FUNCTIONALITY
17. KNOW THE HEATER WATTAGE; CALCULATE THE FULL LOAD
AMPERAGE AND COMPARE TO ACTUAL.
18. EACH T/C SHOULD INDICATE A PROPER RESPONSE FOR IT'S
HEATER.
19. HEATER CABLES SHOULD BE GROUNDED AT MOLD & CONTROLLER
ENDS.
LOCATION ITEMS
20. EJECTOR PINS SHOULD BE FLUSH TO .001" BELOW FLUSH.
21. EXAMINE PARTS LOOKING FOR LONG EJECTOR PINS.
22. EXAMINE PARTS/RUNNER LOOKING FOR PARTING LINE MISMATCH.
23. EXAMINE PARTS LOOKING FOR SLIDE MISLOCATION.
24. CHECK PART FOR PROPER WALL THICKNESS WITH POINTED
MICROMETERS.
25. EXAMINE WALL THICKNESS VARIATIONS RELATIVE TO FILL
PROBLEMS.
26. INTENSIONAL DRAGS SHOULD BE ADJACENT TO EJECTOR PINS.
27. ALIGNMENT SHOULD BE BY PARALLEL LOCKS AND BE LOCATED ON
HORIZONAL AND VERTICAL CENTERLINES: SPECIFY IN DESIGN.
ESTABLISH A BASIC PROCESS
28. RECORD ALL PERTINENT PROCESS & SETUP DATA.
29. DETERMINE GATE SEAL TIME.
DETERMINE BALANCE OF FILL
30. ESTABLISH BASIC PROCESS.
31. SET HOLD/PACK PRESSURE TO ZERO.
32. ADJUST INJECT TIME OR TRANSFER POSITION TO ACHIEVE ONLY
ONE FULL PART( OR AS CLOSE AS POSSIBLE).
33. COLLECT 10 SHOTS; SEPARATE PARTS BY CAVITY AND DETERMINE
AVERAGE PART WEIGHT FOR EACH CAVITY.
34. MAX IMBALANCE SHOULD BE 15% OR LESS.
MISC.OTHER CHECKS
35. HAVE ALL SHARP CORNERS REMOVED FROM MOLD BASE EXTERIOR.
36. DO PARTS FALL FREE AND CLEAR OF MOLD WITHOUT KNICKS?
37. HAVE PRY BAR SLOTS INSTALLED IN MAIN PARTING LINES.
38. REVIEW GATE VESTIGE RELATIVE TO REQUIREMENTS.
39. REVIEW FOR PROPER MOLD SURFACE FINISH FROM BOTH COSMETIC
AND FUNCTIONALITY STANDPOINT.
40. LIGHTLY TOUCH EACH CORE AND CAVITY JUST AFTER REPEATED
CYCLING LOOKING FOR HOT SPOTS (DO NOT TOUCH HOT MOLDS;
OBSERVE STANDARD SAFETY PRACTICES BEFORE REACHING INTO
PRESS).
41. STOP MOLD PRIOR TO ANY EJECTION, LOOK FOR RAISED SURFACES
WHERE PART MAY BE TRYING TO STICK IN NON-MOVING HALF.
42. LOOK AT PARTS FOR PARTING LINE DRAGS.
43. PERFORM DIMENSIONAL CHECKS AFTER SHRINKAGE (48 HRS.)
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