Mold design checklist.xlsx

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Final Mold Design Checklist Mold Supplier: Part Name: Part Drawing No: Rev. No.: Part Print Review Yes No NA Has the latest part print rev been verified? Yes No NA Are the general notes filled out and complete? Yes No NA Have all surfaces of part been evaluated and changes been recommended to compliment molding and tool construction (tolerance, draft, etc.)? Yes No NA All steel dimensions relating to CTQ dimensions denoted on the steel prints. Yes No NA All steel safe dimensions denoted on mold prints and the amount of steel safe condition. Tooling engineer agrees with the steel safe amount based on the type of machining operation required to remove the ste Cavity/Core Design Yes No NA Is cavity relieved to maximize clamp tonnage while still providing enough surface to insure steel integrity and longevity? Yes No NA Are the molding inserts sufficiently held in location to prevent shifting from molding injection pressure? Yes No NA Have sprue and runners been designed with adequate cold slug wells? Yes No NA Do runners need sucker pins? Yes No NA On cold runner molds, is the runner naturally balanced? Yes No NA Is any further melt balancing required? Yes No NA Is there enough surface area on the molding inserts to withstand the clamp tonnage? Yes No NA Are similarly designed removable inserts designed so they cannot be switched incorrectly (polarized/keyed)? Yes No NA Have the molding inserts been keyed to prevent rotation where necessary? Yes No NA Are the slip and press fits specified? Yes No NA Do similar steels rub against each other? Yes No NA Is there adequate venting on runners and cavities, especially at end of fill? Vented to atmosphere? Yes No NA Are vents shown on the molding inserts including required depth and land length? Yes No NA Are the cavities and spare cavities sequentially identified per standard on plan view and have sub inserts been identified for traceability purposes? Yes No NA Is there the capability for changing inserts/cores in the press for multiple version molds? Yes No NA Does the mold surface finish/coating specified satisfy part-molding requirements? Yes No NA Has the engraving and texturing surface finish been identified on the molding details? Yes No NA Can any shut-offs not perpendicular be modified to avoid high wear (that may require design approval)? Yes No NA Are the slide locking angles a minimum of 2 degrees greater than angles of the pull pins? Section 12-Final Mold Design Checklist rev 0 - 3 Ejection Yes No NA Does the machine have adequate opening stroke to clear parts and runner? Yes No NA Does the machine have adequate KO stroke? Yes No NA Are the KO holes shown in the proper location? Yes No NA Do the KO holes miss the water lines, support posts, stop buttons, and core pin water fountains? Yes No NA Are all contoured ejector pins keyed to prevent rotation? Yes No NA Is the clearance and chamfer for the ejector pins shown? Yes No NA Is there an ejector pin located on the part under or near the sub gate?

Yes No NA Is the length of the ejector plate assembly 0.010-inch per/end shorter than the ejector housing? Yes No NA Has part ejection been reviewed to determine any effects for distortion, hitting the other mold surface, or needing shields to contain parts, has timing/design of ejection and hand-off to robot EOT been considered? Yes No NA Do parts and runner clear the bar, leader pins, and return pins? Yes No NA Is a robot/sprue picker boss needed? Yes No NA Has robot/sprue picker clearance been checked? Yes No NA Have there been provisions made to return the ejector plate before the mold closes when there are ejector pins under the slides or core pins? Yes No NA Will the runner drop free and clear of the stripper bolts in a 3-plate mold? Mold Cooling (Heat Transfer) Yes No NA Is there maximum cooling on surfaces where the part shrinks? Yes No NA Are water lines balanced so that lines have equal flow length and flow volumes Yes No NA Are water lines designed so that there is turbulent flow? Yes No NA Are water lines SS or plated? Yes No NA Are the discharged lines sized to create backpressure? Yes No NA Have flow rates (GPM) and coolant temperatures for each circuit been estimated and noted on the mold prints. Yes No NA Have bubblers and fountains been designed for maximum flow rates? Yes No NA Have bubblers and diverters been designed to be removed from the back of the clamping plate? Yes No NA Are the water line plugs shown properly, circuits numbered, the "in and out", and levels identified? Yes No NA Do the water lines "in and out" avoid the tie rods, mounting bolts, and clamp areas? Are the water lines on the side opposite the operator? Yes No NA Do water lines clear the inserts, ejector pins, or screw holes with adequate steel thickness for strength? Yes No NA Are the water line depths called out to the tip of the drill? Yes No NA Are o-ring groove dimensions shown? Yes No NA Are water manifolds needed to ease set-up and repeatability? Yes No NA Has a water line schematic on 8-1/2 x 11-inch sheet been provided? Yes No NA Has a Mold Flow, Filling/Cooling/Warpage Analysis been performed? Section 12-Final Mold Design Checklist rev 0 - 4 Mold Base Yes No NA Does the mold fit within the machine minimum and maximum mold height specifications? Yes No NA Do the clamping slots line-up with bolt holes on the platen? Yes No NA Does the clamping force required for the mold, fit within the specifications of the machine for which the mold has been ordered? Yes No NA Are the leader pins long enough to pilot into the bushings before the cores enter the cavities? Yes No NA Is there one return pin and leader pin offset? Yes No NA Are the top two leader pins long enough to protrude 1/2 inch beyond the floating plate in the forward position? Yes No NA Are there parting line locks? Yes No NA Are the bushings short enough to prevent locking with the pins? Yes No NA Are there vent slots under the leader pin bushings? Yes No NA Are the pry bar slots shown? Yes No NA Has a formula been used to calculate the diameter of the guide pins for 3-plate and stripper plate molds? Pin Deflection = (W x L²)/6EI x (2L+3B) Where W=weight in pounds, L=distance in inches from plate

where pin mounted to load point, E=Modulus of Elasticity (steel = 30million psi), I=Moment of inertia (.049D^4, where D is diameter of pin), B=distance from end of pin to point of force. Yes No NA Are the support posts shown? Yes No NA Are the eyebolt holes size and proper location shown? Yes No NA Are there correct lift holes for the maximum weight of 2260 pounds = 5/8 inch x 11 or 3340 pounds ~ 3/4 inch x 10 shown? Yes No NA Is the locating ring shown? Yes No NA Are the sprue "R" and orifice dimensions shown? Yes No NA Is the mold base parting line relieved by .002 to 0.005 inch? Yes No NA Does the surface contact area around the runner have a minimum of .250 land? Yes No NA Is the shot counter location shown? Yes No NA Is the mold information plate/engraving shown? Mold Drawing Yes No NA Are the tie rods, SPI knockouts, and SPI bolt locations shown on the prints and in the proper location? Yes No NA Has the parting line safety strap been shown? Yes No NA Have all components been identified on the planned view with detailed numbers? Yes No NA Is the mold designed for easy assembly and disassembly? Yes No NA Have all areas been identified for mold cleaning and has the access of these areas been considered in design? Yes No NA Has a safety margin been considered on the mold open stroke for 3-plate molds? Yes No NA Provide molding with schematic of cavity number locations on an 8-1/2 x 11- inch sheet. Also provide corresponding controller zones on hot runner molds. Yes No NA Have standard purchased items such as hose fittings and electrical connectors been specified on the parts list? Section 12-Final Mold Design Checklist rev 0 - 5 Yes No NA Hot runner electrical connection box drawn on mold prints. Yes No NA Mold weight called out on the mold prints Yes No NA Include mold sequence mapping/description Miscellaneous Yes No NA Has the mold mechanism been designed to eliminate mold damage due to out of sequence operations and has information been developed to train molding technicians on the mold operation? Yes No NA Does the runner radius, shrink rates, and gate sizes reflect the resin supplier's recommendations? Yes No NA Is there a wiring diagram for all hot runner molds? Has a schematic been provided on an 8-1/2 x 11-inch page showing which zone controller affects cavities and manifolds? Yes No NA Are there molding or mold fabrication issues, which should be brought to Covidien’s attention prior to mold fabrication that may improve the ability to fabricate the mold or mold parts? Yes No NA Hot runner junction boxes considered in the design to limit the number of cables to the mold for high cavitation tooling Final Mold Design Approval Tooling Engineer: Date: Plant/Molder Tooling Mgr.: Date: Plant/Molder Quality Mgr.: Date: Plant/Molder Engineering Mgr.: Date: Product R&D Engineer: Date: Tool Supplier: Date:

Final Mold Design Checklist Mold Supplier: Part Name: Part Drawing No: Rev. No.: Part Print Review Yes No NA Has the latest part print rev been verified? Yes No NA Are the general notes filled out and complete? Yes No NA Have all surfaces of part been evaluated and changes been recommended to compliment molding and tool construction (tolerance, draft, etc.)? Yes No NA All steel dimensions relating to CTQ dimensions denoted on the steel prints. Yes No NA All steel safe dimensions denoted on mold prints and the amount of steel safe condition. Tooling engineer agrees with the steel safe amount based on the type of machining operation required to remove the steel. Cavity/Core Design Yes No NA Is cavity relieved to maximize clamp tonnage while still providing enough surface to insure steel integrity and longevity? Yes No NA Are the molding inserts sufficiently held in location to prevent shifting from molding injection pressure? Yes No NA Have sprue and runners been designed with adequate cold slug wells? Yes No NA Do runners need sucker pins? Yes No NA On cold runner molds, is the runner naturally balanced? Yes No NA Is any further melt balancing required? Yes No NA Is there enough surface area on the molding inserts to withstand the clamp tonnage? Yes No NA Are similarly designed removable inserts designed so they cannot be switched incorrectly (polarized/keyed)? Yes No NA Have the molding inserts been keyed to prevent rotation where necessary? Yes No NA Are the slip and press fits specified? Yes No NA Do similar steels rub against each other? Yes No NA Is there adequate venting on runners and cavities, especially at end of fill? Vented to atmosphere? Yes No NA Are vents shown on the molding inserts including required depth and land length? Yes No NA Are the cavities and spare cavities sequentially identified per standard on plan view and have sub inserts been identified for traceability purposes? Yes No NA Is there the capability for changing inserts/cores in the press for multiple version molds? Yes No NA Does the mold surface finish/coating specified satisfy part-molding requirements? Yes No NA Has the engraving and texturing surface finish been identified on the molding details? Yes No NA Can any shut-offs not perpendicular be modified to avoid high wear (that may require design approval)? Yes No NA Are the slide locking angles a minimum of 2 degrees greater than angles of the pull pins? Section 12-Final Mold Design Checklist rev 0 - 3 Ejection Yes No NA Does the machine have adequate opening stroke to clear parts and runner? Yes No NA Does the machine have adequate KO stroke? Yes No NA Are the KO holes shown in the proper location? Yes No NA Do the KO holes miss the water lines, support posts, stop buttons, and core pin water fountains? Yes No NA Are all contoured ejector pins keyed to prevent rotation? Yes No NA Is the clearance and chamfer for the ejector pins shown? Yes No NA Is there an ejector pin located on the part under or near the sub gate?

Yes No NA Is the length of the ejector plate assembly 0.010-inch per/end shorter than the ejector housing? Yes No NA Has part ejection been reviewed to determine any effects for distortion, hitting the other mold surface, or needing shields to contain parts, has timing/design of ejection and hand-off to robot EOT been considered? Yes No NA Do parts and runner clear the bar, leader pins, and return pins? Yes No NA Is a robot/sprue picker boss needed? Yes No NA Has robot/sprue picker clearance been checked? Yes No NA Have there been provisions made to return the ejector plate before the mold closes when there are ejector pins under the slides or core pins? Yes No NA Will the runner drop free and clear of the stripper bolts in a 3-plate mold? Mold Cooling (Heat Transfer) Yes No NA Is there maximum cooling on surfaces where the part shrinks? Yes No NA Are water lines balanced so that lines have equal flow length and flow volumes Yes No NA Are water lines designed so that there is turbulent flow? Yes No NA Are water lines SS or plated? Yes No NA Are the discharged lines sized to create backpressure? Yes No NA Have flow rates (GPM) and coolant temperatures for each circuit been estimated and noted on the mold prints. Yes No NA Have bubblers and fountains been designed for maximum flow rates? Yes No NA Have bubblers and diverters been designed to be removed from the back of the clamping plate? Yes No NA Are the water line plugs shown properly, circuits numbered, the "in and out", and levels identified? Yes No NA Do the water lines "in and out" avoid the tie rods, mounting bolts, and clamp areas? Are the water lines on the side opposite the operator? Yes No NA Do water lines clear the inserts, ejector pins, or screw holes with adequate steel thickness for strength? Yes No NA Are the water line depths called out to the tip of the drill? Yes No NA Are o-ring groove dimensions shown? Yes No NA Are water manifolds needed to ease set-up and repeatability? Yes No NA Has a water line schematic on 8-1/2 x 11-inch sheet been provided? Yes No NA Has a Mold Flow, Filling/Cooling/Warpage Analysis been performed? Section 12-Final Mold Design Checklist rev 0 - 4 Mold Base Yes No NA Does the mold fit within the machine minimum and maximum mold height specifications? Yes No NA Do the clamping slots line-up with bolt holes on the platen? Yes No NA Does the clamping force required for the mold, fit within the specifications of the machine for which the mold has been ordered? Yes No NA Are the leader pins long enough to pilot into the bushings before the cores enter the cavities? Yes No NA Is there one return pin and leader pin offset? Yes No NA Are the top two leader pins long enough to protrude 1/2 inch beyond the floating plate in the forward position? Yes No NA Are there parting line locks? Yes No NA Are the bushings short enough to prevent locking with the pins? Yes No NA Are there vent slots under the leader pin bushings? Yes No NA Are the pry bar slots shown? Yes No NA Has a formula been used to calculate the diameter of the guide pins for 3-plate and stripper plate molds? Pin Deflection = (W x L²)/6EI x (2L+3B) Where W=weight in pounds, L=distance in inches from plate

where pin mounted to load point, E=Modulus of Elasticity (steel = 30million psi), I=Moment of inertia (.049D^4, where D is diameter of pin), B=distance from end of pin to point of force. Yes No NA Are the support posts shown? Yes No NA Are the eyebolt holes size and proper location shown? Yes No NA Are there correct lift holes for the maximum weight of 2260 pounds = 5/8 inch x 11 or 3340 pounds ~ 3/4 inch x 10 shown? Yes No NA Is the locating ring shown? Yes No NA Are the sprue "R" and orifice dimensions shown? Yes No NA Is the mold base parting line relieved by .002 to 0.005 inch? Yes No NA Does the surface contact area around the runner have a minimum of .250 land? Yes No NA Is the shot counter location shown? Yes No NA Is the mold information plate/engraving shown? Mold Drawing Yes No NA Are the tie rods, SPI knockouts, and SPI bolt locations shown on the prints and in the proper location? Yes No NA Has the parting line safety strap been shown? Yes No NA Have all components been identified on the planned view with detailed numbers? Yes No NA Is the mold designed for easy assembly and disassembly? Yes No NA Have all areas been identified for mold cleaning and has the access of these areas been considered in design? Yes No NA Has a safety margin been considered on the mold open stroke for 3-plate molds? Yes No NA Provide molding with schematic of cavity number locations on an 8-1/2 x 11- inch sheet. Also provide corresponding controller zones on hot runner molds. Yes No NA Have standard purchased items such as hose fittings and electrical connectors been specified on the parts list? Section 12-Final Mold Design Checklist rev 0 - 5 Yes No NA Hot runner electrical connection box drawn on mold prints. Yes No NA Mold weight called out on the mold prints Yes No NA Include mold sequence mapping/description Miscellaneous Yes No NA Has the mold mechanism been designed to eliminate mold damage due to out of sequence operations and has information been developed to train molding technicians on the mold operation? Yes No NA Does the runner radius, shrink rates, and gate sizes reflect the resin supplier's recommendations? Yes No NA Is there a wiring diagram for all hot runner molds? Has a schematic been provided on an 8-1/2 x 11-inch page showing which zone controller affects cavities and manifolds? Yes No NA Are there molding or mold fabrication issues, which should be brought to Covidien’s attention prior to mold fabrication that may improve the ability to fabricate the mold or mold parts? Yes No NA Hot runner junction boxes considered in the design to limit the number of cables to the mold for high cavitation tooling Final Mold Design Approval Tooling Engineer: Date: Plant/Molder Tooling Mgr.: Date: Plant/Molder Quality Mgr.: Date: Plant/Molder Engineering Mgr.: Date: Product R&D Engineer: Date: Tool Supplier: Date:

move the steel.

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Mould Specification details Parting line locations (Acceptable to customer) Ejector Pin Layout (Acceptable to customer) Waterline Layout Balanced Runner layout Gate type, and size specified Side Action types & locations are shown Concept of Tool operation O & "R" Dimensions noted Note "Top of mold" & "Operator Side" Will the tool fit in the correct press size Knock out Locations Support pillar layout All Preliminary Mold Drawings Requirements completed Full Bill of Materials, Base Information, stamping notes, ejector information, and special notes Detailed views of every non-standard component. Enough views, sections, iso views exist to adequately show part detail All details are labeled with the detail number, name, material type, number required, Hardness, and surface finish. Check All water lines for interference, including clearance for jiffy-plugs Check Guide Pin length and clearance Spring loads calculated & checked Drawings appear to be adequately dimensioned Critical Dimensions are noted All "fit" areas are specified for each insert, side action, and core. All draft is specified for cavity area, core pins, ribs, etc. Check all side action angles and travel Check for bad steel conditions (sharp edges, thin sections, too little shutoff, too little angle) A & B Plan assembly views have been compared All details from the assembly and plan views have been compared to the detail sheets. All surface finishes are specified Drawings are checked to the "Mold Info Sheet". General layout A side plan B side plan Front Section Side Section Title block is completely filled out on all drawings Abbreviated BOM with ordering information for the Mold Base and primary Steels

Yes

No

NA

urface finish.

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