Job Description

Responsibilities

• Operate and do maintenance checks on forklift
• Bring in molds for and repair, out when done
• Identify change over parts and do change over on molds
• Identify and replace defective mold parts
• Trouble shoot and repair mold cooling systems
• Use hand and power tools properly and safety
• Clean, polish and lube molds on bench
• Do other related jobs that you are assigned to do

Position Requirements

• Must be able to read and write
• Write up reports
• Basic mathematics skills and mechanical aptitude

Work Conditions

• No unusual working conditions exist for this position

Mold Cleaning Procedures

(A) During Production run (in the press)

• Stop machine
• If using mold heather, shut it off. Also shut off chill water
• Open mold
• Extend ejector pins

1. spray ejector pins with mold cleaner
2. let pins dry, or dry with air nozzle (wear safety glasses)
3. lube pins with ejector lube

• Retract ejector pins
• Clean mold halves

1. using solvent or overnight mold protestant, spay both “A” and “B” halves
2. using a brass (make sure it is brass) brush, scrub both “A” & “B” halves
3. repeat both procedures “6A” and “B” above
4. using mold cleaner, spray both mold halves until all residue is removed, and wipe with a clean rag
5. put a light coat of grease on the (leading edge only) of all leader pins, cam pins and heel blocks
6. spray a light coat of overnight protestant on both halves and leave it

• Inspect mold

1. check bold tightness on gibes, slides, ejector plate, heel blocks, and cavity blocks
2. inspect for galling or excessive wear on sliding surfaces, leader pins, cam pins, heel blocks and core pins

• Check for water leaks

1. make sure all quick connect fittings are secure
2. close machine safety gate
3. turn mold heater and/or chill water on
4. open machine safety gate, and inspect for water leaks (if a water leak is detected, either replace the hose or replace the silicone o-rings in the water hose connect fittings

• Restart machine

1. if there are slides, make sure they are fully back and engaged in their detents
2. manually close mold, then open
3. Wipe excess grease off mold faces from leader pin, heel block areas etc.
4. purge machine as necessary and restart machine

Mold Cleaning Procedures

(B) Post-Production (out of press)

• Before removing mold from the press, perform mold cleaning procedure (A) production run, with the exception, do not apply grease to the mold. Remember to shut off water first and remove all water lines before cleaning mold
• Place mold on disassemble table
• Attach water passage clear out hose to mold and blow out all water lines
• Remove ejector box, ejector plate and pins
• Remove retention plate from ejector plate
• Remove ejector pins and place in a solvent bath
• Remove “B” half slides and cavity blocks
• Remove cores form slides and place in designated storage unit for inspection and cleaning at a later date
• Place slide and cavity blocks to soak in a solvent solution
• Remove cavity block, heel blocks, sprue bushing, and cam pins from “A” half and place in solvent soak (do not place heated sprue bushing in solvent)
• Scrub mold base cavity pockets, mold base and ejector box area with solvent and brass brush and or copper gauze
• Clean all solvent soaking components with a satchel brush, tooth brush or brass brush as required
• Perform cleaning of cores
• Remove all solvent residue from all mold components with spray mold cleaner and a clean rag
• Inspect all mold components for excessive wear (burring, bright spots, galling, witness marks etc)
• Bring any questionable components to the tool maker for inspection, measurement and evaluation
• Prior to re-assembly of mold, clean o-ring seats, replace o-rings and replace or dress up brass fittings
• Re-assemble tool. Apply light coat of never-seize to the back of cavity blocks and on bolts threads. Apply ejector lube to ejector pins as they are re-positioned in tool. Apply a light coat of mold (bull) grease or Teflon spray grease to ejector guide bushings and ejector push-back pins
• After tool is assemble, spray “A” and “B” halves with overnight mold protector and close mold halves together
• Fill water passages with foaming rust inhibitor and wipe off excess. Spray entire external surfaces with overnight mold protector and place mold on production –ready table.

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