Injection molding insulative and resilient spacer member

Details Injection molding insulative and resilient spacer member Injection molding insulative and resilient spacer member

B - Operations, Transporting

29

C

18/703

B29C 45/74 (2006.01) B29C 45/27 (2006.01)

Patent

CA 2022123

An insulative and resilient spacer member to be mounted between a heated manifold and a cooled clamp plate in an injection molding system. The spacer member has a plurality of V-shaped concentric rings. It has a uniform cross section with a number of web portions extending diagonally between alternate forward and rearward ridge portions. The outer surfaces of the alternate ridge portions are aligned to provide forward and rearward sides of the spacer member which extend parallel a predetermined distance apart. Some of the outer surfaces have an inwardly extending insulative circular groove. The spacer member is formed of steel to have a predetermined combination of strength, resilience and reduced thermal conductivity.

Elément d'espacement isolant et élastique à installer entre un collecteur chauffé et une plaque de serrage refroidie dans un système de moulage par injection. L'élément d'espacement comprend plusieurs anneaux concentriques en V et une coupe transversale uniforme avec des bandes (âmes) qui se prolongent en diagonale entre des arêtes alternées avant et arrière. Les surfaces extérieures des arêtes alternées sont alignées pour former les parois avant et arrière de l'élément d'espacement et se prolongent en parallèle à une distance préétablie. Certaines des surfaces extérieures comprennent une rainure circulaire isolante se prolongeant vers l'intérieur. L'élément d'espacement est fabriqué en acier afin de présenter une combinaison préétablie de résistance, d'élasticité et de conductivité thermique réduite.

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