A) Mold Assembly Design Checking

01) distance between tie bars
02) insulation plates
03) mount mold on injection machine (total, cavity and core side separate)
04) locating ring cavity and core side (Ø)
05) guide pillar longer than inserts
06) enough support pillar for B plate
07) machine: opening width, enough movement ejector package possible
08) mold marking
09) mold label
10) how many cavities are ordered
11) are all plates (mold base) strong enough
12) pry bar slot areas for easier disassembling
13) other

B) Mold function / ejection

01) ejector rod according to mold specification
02) ejector package guidance according to mold specification
03) limit switch
04) eyebolt threads on all plates from all sides
05) is ejection ensured
06) is ejection of sprue ensured
07) parts or sprue should not get stuck
08) no ejection marks allowed
09) take out sprue by robot ensured
10) undercut for sprue
11) return pin
12) ejector close to sub gate
13) ejector package: are enough screws
14) lifting bar with complete marking (mold number, weight)
15) shot counter
16) thermocouple CAS and COS HASCO H1295/3/8
17) In case of risk of damaging the part, Provide sprue delayed sprue ejectors.
18) mould is running grease/oil- free
19) bill of material (BOM) including hardness

C) Cooling

01) enough cooling in A plate and B plate
02) enough cooling in core inserts and cavity inserts
03) cooling in slider
04) cooling in clamping plates
05) are all cooling marked
06) are the cooling nipples/connectors on the right position (down or back)
07) cooling marked-plate on mold
08) separate cooling at welding lines or around gate
09) cooling in sub inserts in for example corners

D) Sprue, Cold runner

01) sprue gate
02) cold runner and sub gate
03) turnable sprue
04) sub gate with/without dead end
05) size of gate (enough or too big)
06) nozzle radius (flat, R15,5 or R40……) according to mold specification
07) cold runner rounded

E) Hot runner system

01) Hot runner brand, dimensions are okay
02) adjustment hot runner
03) connection housing for hotrunner
04) location for connecting housing
05) nozzle radius (flat, R15,5 or R40……)
06) cable channel rounded
07) open cable channel: Secure the cable against falling out/crush
08) hot runner / manifold bush locked
09) other

F) Hot runner valve system

01) hotrunner system, nozzle type, manifold, etc. checked
02) connection housing
03) location for connecting housing
04) nozzle radius (flat, R15,5 or R40……) according to mold specification
05) cable channel rounded
06) open cable channel : Secure the cable against falling out/crush
07) adjustment hot runner
08) hot runner driven by air, hydraulic, electric (according to mold specification)
09) cascade required

G) General

01) shrinkage
02) changable inserts coded
03) weak/thin sub inserts centered
04) venting
05) cavity numbers marked. Started with which number.
06) enough space for injection molding machine nozzle
07) mounting threads
08) fitting between insert and A-plate / B-plate
09) all markings according to drawing
10) lock of mold required
11) clearance for better/easier fitting
12) ejection/demolding possible
13) is 2 stage ejector required
14) is air for demolding required
15) if mold temparture above 90°C, are all components considered

H) Slider

01) slider with insert
02) grooves for locating slider
03) safety ejector pin required
04) different angle min. 2° for guide pillar and wedge
05) locking of slider
06) cooling of slider
07) venting, slider with 2 movements
08) large slider shall have a central guide rail

I) Hydraulic

01) IN/OUT marked
02) connection of hydraulic cylinder
03) schedule for movement

J) Automation

01) centering required
02) space requirements
03) cold runner pick up ensured
04) part removal ensured