US 11,685,091 B2
Thermoregulated rubber distributor for injection molds
Andrea Naboni, Palosco (IT); and Guido Michael Castoldi, Palosco (IT)
Assigned to NCN TECHNOLOGY S.R.L., Palosco (IT)
Appl. No. 17/56,304
Filed by NCN Technology S.R.L, Sarnico (IT)
PCT Filed Apr. 10, 2019, PCT No. PCT/IB2019/052958
§ 371(c)(1), (2) Date Nov. 17, 2020,
PCT Pub. No. WO2019/224621, PCT Pub. Date Nov. 28, 2019.
Claims priority of application No. 102018000005633 (IT), filed on May 23, 2018.
Prior Publication US 2021/0213660 A1, Jul. 15, 2021
Int. Cl. B29C 45/27 (2006.01)
CPC B29C 45/2727 (2013.01) [B29C 45/2738 (2013.01); B29C 45/2756 (2013.01); B29C 2045/2733 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A thermoregulated rubber distributor (5) for injection molds, the distributor comprising:
two or more modular units (10, 11), a plurality of sleeves (14) each interchangeably insertable in the two or more modular units (10, 11), one or more injectors (13) to feed melted rubber to the distributor (5) and one or more discharge nozzles (7) to discharge the melted rubber from the distributor (5) towards an external mold,
wherein each of the plurality of sleeves (14) has a through hole (16) extending along a longitudinal axis of said each of the plurality of sleeves (14) and a groove (15′) extending on a side surface of each of the plurality of sleeves so that the groove (15′) and an inner surface of the two or more modular units (10, 11) define a coil (15) intended to be supplied with a thermoregulating fluid whenever each of the plurality of sleeves (14) is inserted into two or more modular units (10, 11),
wherein the two or more modular units (10, 11) can be constrained to one another to define one or more channels (16′, 16″) for distribution of the melted rubber that extend from an injector (13) to one or more discharge nozzles (7), depending on a desired path, and
wherein the through hole (16) of each of the plurality of sleeves (14) defines corresponding lengths of at least one of the one or more channels (16′, 16″) for distribution of the melted rubber; and
wherein at least one sleeve (14) has a frontal through hole (15″) through which the relative coil (15) is set in fluid communication with another coil (15) of an adjacent sleeve (14) or with a corresponding duct provided in the related modular unit (10, 11).