- Industry: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who tends hydraulic press that compresses smokeless powder into block form for further processing. Respnsibilities include:
* Charges press, using colloidal smokeless powder.
* Closes compression chamber and opens valves to compress powder.
* Removes block from chamber.
* May be designated according to pressing stage as final-block-press operator; preliminary-block-press operator.
Industry:Professional careers
A professional who tends presses that mold cover material on bowling-ball cores preparatory to steam curing, performing any combination of following duties. Respnsibilities include:
* (1) Cuts rubber cover stock to approximate size, using knife, and lays specified number of rubber squares in mold half.
* (2) Positions mold half under press ram and presses button to lower ram into mold to shape rubber.
* Places bowling-ball core in every other mold with marked, weighted area away from seam.
* (3) Places cover, mold half on core, and pushes pins through mold flanges to hold halves in position.
* Places mold into press and presses button to lower ram and to mold cover to core.
* (4) Pulls flash from mold seam and places or pounds brackets onto mold flange to hold mold together during curing.
* Opens press, pounds pins out of flange, and stacks mold on pallet.
* May clean cores prior to molding operations, using cabinet sandblast equipment.
Industry:Professional careers
A professional who tends compression-molding machines that mold thermosetting plastics into products, such as automobile heater housings, ashtrays, buttons, electronic parts, plastic panels, and dishes. Respnsibilities include:
* Dumps specified amount of plastic powders or pellets into hopper of machine, or positions pellets or sausage-shaped plastics in mold installed on machine.
* Starts machine that compresses plastic into mold under heat and pressure, and allows plastic to set for specified time.
* Removes product from mold and cleans mold, hopper, and bed of machine, using airhose and handtools.
* May place plastics material on hot grid or in oven to soften it prior to molding.
* May weigh prescribed amount of material for molding.
* May place plastic sheet into machine fixture to fabricate buttons.
Industry:Professional careers
A professional who tends equipment that compresses powdered cosmetics, such as face powder, eye shadow, or rouge, into cakes or sticks for use in compacts or cylindrical cases by either of following methods. Respnsibilities include:
* (1) Spreads or brushes glue onto pans set into indentations of mold board.
* Fills individual molds with powder and pulls handle to force die into molds and compress powder.
* Positions mold on die of press and starts press that squeezes powder into cakes or sticks.
* Removes molds and dumps product onto tray to dry.
* (2) Scoops cosmetic powder into hopper of molding and pressing machine and starts machine.
* Places molds on conveyor that carries them into machine for automatic filling and pressing.
* Shakes or brushes loose powder from cosmetic cakes ejected by machine and places them on tray to dry.
* Discards cakes having irregularities, such as bubbles, indentations, and cracks.
* Feeds mold pans into glue machine and turns preset valves to spray molds with glue and dry for reuse.
Industry:Professional careers
A professional who tends conveyorized machine that dips forms into liquid latex to produce rubber goods, such as balloons, finger cots, and prophylactics. Respnsibilities include:
* Mixes liquid latex in drums, using electric mixer or wooden paddle.
* Dips latex from drum into cans, and conveys filled cans on handtruck to machine holding tanks.
* Pours latex into gravity flow tank to maintain specified tank level.
* Starts machine that moves forms through various vats, driers, ovens, and rinses in continuous operation to form product.
* Removes sample of latex goods from form after final dip, weighs it, and adds solution of ammonia or latex to tank when weight does not meet requirements.
* Changes filters in latex tanks.
* Replaces dirty, loose, or broken forms on conveyor.
* Adds water softener to curing tanks.
* Verifies temperature and humidity on instrument control charts.
Industry:Professional careers
A professional who tends injection-molding machines that form plastic or rubber products, such as typewriter keys, phonograph records, and luggage handles. Respnsibilities include:
* Dumps plastic powder, preformed plastic pellets, or preformed rubber slugs into hopper of molding machine.
* Starts machine that automatically liquefies pellets, slugs, or powder in heating chamber, injects liquefied material into mold, and ejects molded product.
* Observes gauges to ensure specified molding temperature and pressure are maintained.
* Examines molded product for surface defects, such as dents and cracks.
* May heat plastic material over steamtable or in oven to prepare material for molding.
* May remove product from mold, using handtools.
* May trim flash from product, using shears or knife.
* May place product in cold water or position it on cooling fixture to prevent distortion.
Industry:Professional careers
A professional who tends press that molds and cures rubber sheeting for use as floor matting. Respnsibilities include:
* Places roll of calendering rubber sheeting in letoff rack using hoist, and unwinds sheeting onto bed of steam-heated curing press.
* Aligns rubber sheeting with edges of die, and closes press to mold and cure rubber sheeting for specified time.
* Winds cured rubber matting onto powered spindle.
* Continues process until roll is completed.
Industry:Professional careers
A professional who tends hydraulic steam press that heats molds filled with mixture of foam rubber particles and latex (liquid rubber) to form cushions and mattresses. Respnsibilities include:
* Carries filled mold from mixing machine to table of press.
* Smooths mixture in mold to distribute it evenly.
* Positions top cover on mold and places mold on press bed.
* Turns valve to lower ram against mold that heats and cures mixture.
* Removes mold, dumps molded product, and places it on storage rack.
* May grind foam rubber scrap, using electrically powered grinding machine.
* May mix ground foam rubber particles with latex, using mixing machine, and fill molds with mixture.
Industry:Professional careers
A professional who tends equipment that cools and solidifies paradichlorobenzene preparatory to storage, shipment, or further processing. Respnsibilities include:
* Pumps chemical into water-jacketed molds and turns valve to circulate chilled water through jacket and solidify material.
* Opens valve to admit steam to jacket to loosen crystallized product for removal.
* May break solidified product into smaller pieces preparatory to crushing, using wooden stick.
* May tend crusher to granulate product.
* May fill containers with crushed product and transfer containers to storage or shipping area, using handtruck.
Industry:Professional careers
A professional who tends pilling machine that compresses plastics powder into pellets or biscuits of specified weight and shape. Respnsibilities include:
* Dumps plastics powders into machine hopper, using drum hoist or starts screw conveyor that loads hopper with material from storage bin.
* Opens gate valve to control flow of powder from hopper into machine.
* Turns steam valve to regulate temperature of machine according to ammeter gauge, and adjusts die pressure to attain specified hardness of pill.
* May clean, change, and adjust die.
* May be designated according to type of machine tended as rotary preformer; single-stroke preformer.
Industry:Professional careers
