Patent ID: 11883986
Assignee: KRAUSSMAFFEI TECHNOLOGIES
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 4:
5. Method according to claim 1, wherein in the accepted-part reference injection-moulding cycle and/or in the current injection-moulding cycle additionally at least one of the following quantities is determined and recorded if necessary:
maximum mould internal pressure pwkz,max as well as
the appurtenant time twkz,max,
a drop of the mould internal pressure after reaching the maximum (m1)
a mould internal pressure average pwkz,avg and/or a compound pressure average pmasse,avg in the injection phase and/or a mould internal pressure average pwkz,Hld,avg and/or a compound pressure average pmasse,Hld,avg in the holding-pressure phase,
a mould internal pressure area pa,wkz in the holding-pressure phase, as pressure integral according to the following formula

∫t2t3pwkz,Hld(t)

a compound pressure area pa,masse in the holding-pressure phase, as pressure integral according to the following formula

∫t2t3pmasse,Hld(t)

wherein:
pwkz,Hld(t) is the mould internal pressure curve in the holding-pressure phase,
pmasse,Hld(t) is the compound pressure curve in the holding-pressure phase,
pwkz,avg is an average of the mould internal pressure during the injection phase,
pmasse,avg is an average of the compound pressure during the injection phase,
pwkz,Hld,avg is an average of the mould internal pressure during the holding-pressure phase,
pmasse,Hld,avg is an average of the compound pressure in the holding-pressure phase,
t2 is a time at or after the switch-over point, being the switch-over point and
t3 is a time after t2, e.g. the time of the end of the holding-pressure phase tHld,End or a time before the end of the holding-pressure phase, being the time twkz,max of the maximum mould internal pressure of the respective cycle.