The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2020
Filed:
Jan. 15, 2015
U-mhi Platech Co., Ltd., Nagoya-shi, Aichi, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Munehiro Nobuta, Nagoya, JP;
Naoki Toda, Nagoya, JP;
Toshihiko Kariya, Nagoya, JP;
Takeshi Yamaguchi, Nagoya, JP;
Kiyoshi Kinoshita, Nagoya, JP;
U-MHI PLATECH CO., LTD., Nagoya-Shi, Aichi, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo, JP;
Abstract
Provided is a screw that is for use in an injection molding machine and that makes it possible to benefit from the kneading effect of a multi-start screw while minimizing the received friction resistance. The screw for an injection molding machine is provided with a first stageon the upstream side and a second stageon the downstream side. The screw for an injection molding machine is characterized in that: the first stageis provided with a compression sectioncomprising a main scraperand an auxiliary scraperhaving a smaller outer diameter than the main scraper; and the second stageis provided with a multi-start screw section, said multi-start screw section being provided on the upstream side and comprising a plurality of scrapers, and a fin kneading sectionprovided downstream from the multi-start screw section.