Blow tube construction

B - Operations – Transporting – 65 – B

Patent

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Details

B65B 1/04 (2006.01) B22C 15/24 (2006.01) B65B 1/20 (2006.01)

Patent

CA 2515529

A blow tube for delivering particulate material from a container thereof to a mold to form a core has a unitary, elongate body formed of resiliently elastic material which enables the body to adjust and compensate for misalignment of the container and the mold. The blow tube body has a bore having a plurality of axially spaced sections so that when the particulate material is blown through the body by compressed gas, the density of the particulate material is increased and the velocity of the gas and particle stream is increased. The elasticity of the blow tube body enables the latter to expand in the event the particulate material clogs the blow tube, thereby enabling the clog to disaglomerate.

La présente invention concerne une canne de soufflage destinée à distribuer un matériau particulaire en provenance d'un contenant dans un moule afin de former un noyau, laquelle canne de soufflage possède un corps allongé unitaire formé d'un matériau élastique qui permet au corps de s'ajuster pour compenser le désalignement du contenant et du moule. Le corps de la canne de soufflage comprend un alésage comportant une pluralité de segments axialement espacés de façon que lorsque le matériau particulaire est soufflé à travers le corps à l'aide de gaz comprimé, la densité du matériau particulaire augmente et la vitesse du gaz et du flux de particules augmente. L'élasticité du corps de la canne de soufflage permet à ce dernier de s'élargir au cas où le matériau particulaire obstrue la canne de soufflage, et permet de la sorte au matériau de se désagréger.

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