-
1.发明公开
公开(公告)号：EP3789178A1
公开(公告)日：2021-03-10
申请号：EP20810854.8
申请日：2020-05-22
发明人： MATSUZAWA, Motohiro
摘要： An aim of the present invention is to enable a molten resin to be fed from a hot runner apparatus into preform molding portions of an injection molding mold without a higher temperature and lower viscosity resin being present in a biased manner and to enable preforms having no biased portion of a higher temperature and lower viscosity resin in their circumferential direction.
An introducing runner portion (18) of a hot runner apparatus (9) is bent toward a horizontal runner portion (15) after reaching an elevation plane (A) passing through a position of the horizontal runner portion (15) in an up-and-down direction and continuous with an intermediate portion of the horizontal runner portion (15) in the elevation plane (A).-
公开(公告)号：EP3912792A1
公开(公告)日：2021-11-24
申请号：EP21173981.8
申请日：2021-05-14
发明人： AOKI, Shigeto
摘要： An injection apparatus is configured to feed a molten resin into an injection molding section of an injection stretch blow molding machine. The injection apparatus uniformly melts a resin material while the duration from the time of starting plasticizing and kneading till completion of injection is shortened, thereby allowing the operation of the injection apparatus to fall within the time corresponding to the reduced injection molding process in the injection stretch blow molding machine. Thus, the molding cycle for a hollow body is reduced. In this context, at the start of the filling for each injection cycle, the injection apparatus starts plasticizing and kneading for generating the molten resin for injection in the next injection cycle.
-
公开(公告)号：EP3900913A1
公开(公告)日：2021-10-27
申请号：EP20204505.0
申请日：2020-10-28
发明人： AOKI, Shigeto
摘要： An object is to provide an injection stretch blow molding machine and a method for molding a polyethylene container capable of molding a favorable hollow container even if its preform is released from an injection mold (10M) early. The injection stretch blow molding machine and the method for molding a polyethylene container molds a preform by injecting and filling a molten polyethylene resin into an injection mold (10M) , which includes a cavity mold (12) and a core mold (13) both cooled to a temperature range of 5°C to 25°C, transfers the molded preform to a blow molding mold (20M) , and molds a hollow container by blowing the preform within a time range of ±2 sec from a point (B1, B3, B4) in time when a temperature of the preform reaches a first minimum point (B1, B3, B4) after a point (B1, B3, B4) in time when the injection mold (10M) completes being opened.
-
公开(公告)号：EP4166303A1
公开(公告)日：2023-04-19
申请号：EP22201367.4
申请日：2022-10-13
发明人： HASEGAWA, Kazuhide
IPC分类号： B29C49/12 , B29C49/42 , B29C49/78 , B29C49/06 , B29C49/28 , B29C49/02 , B29C49/64 , B29C49/70 , B29L31/00
摘要： When a preform having been molded while released from a mold at an earlier timing in an injection stretch blow molding machine is stretched and blow molded, the bottom of the preform is prevented from rupturing and the bottom of a hollow molded article is prevented from being uneven in wall thickness to produce such a hollow molded article without defect bottom by the injection stretch blow molding machine. A method for producing a hollow molded article includes: an injection molding process of injection molding a preform; and a blow molding process of blow molding the preform to obtain a hollow molded article. The blow molding process allows a tip of a stretching rod cooled to a temperature between 50°C and 90°C to be brought into contact with the bottom of the preform in a softened state obtained in the injection molding process, and to press down the bottom of the preform while the bottom is cooled.
-
公开(公告)号：EP4119326A1
公开(公告)日：2023-01-18
申请号：EP22183372.6
申请日：2022-07-06
发明人： SUZAKA, Keiichi
摘要： A blow mold high-pressure switching step in a blow molding process of an injection stretch blow molding machine is arranged at the first half portion of the blow molding process, to shorten the injection molding process and improve the moldability. The blow mold high-pressure switching step 61B3 of increasing a mold clamping force for blow molds which have been closed in a blow molding process 61B is configured to be performed at a timing within a time from the start of the upper/lower mold opening step 62A1 for opening upper and lower molds in the injection molding process 62A to release a preform 3P to the completion of the injection mold high-pressure switching step 62A3 for increasing the mold clamping force for the closed injection molding mold.
-
6.发明公开
公开(公告)号：EP4094920A1
公开(公告)日：2022-11-30
申请号：EP21204057.0
申请日：2021-10-21
发明人： AOKI, Shigeto
IPC分类号： B29C45/26 , B29C49/06 , B29K105/00
摘要： When a hollow molded body using a preform to be molded with a thin bottom portion is produced while taking advantage of the roughening of the outer surface of an injection core mold, transferred roughening marks are prevented from appearing on the bottom portion of hollow molded bodies, so that the hollow molded body with an aesthetic bottom portion is obtained. An injection core mold (12) has an outer surface of its tip portion corresponding to a preform bottom portion (10) and a lower end portion (14a) of a preform body portion (14). The outer surface corresponding to the preform bottom portion (10) and the lower end portion (14a) of the preform body portion (14) is a mirror-finished surface (20), and the outer surface of the injection core mold for forming the preform other than the mirror-finished surface is a roughened surface (15).
-
7.发明公开
公开(公告)号：EP3616883A1
公开(公告)日：2020-03-04
申请号：EP19789061.9
申请日：2019-01-31
发明人： NAKAZAWA Nobuhiko , TERADA Miwa
摘要： Fixation of a container shape of a hollow molded body is not completed during a blow molding process but is completed during an ejection process of an ejection section, thereby shortening an operation time in a stretch blow molding section, and improving the production efficiency of hollow molded bodies by shortening the time required for the blow molding process during a molding cycle.
Cooling air is blown into the inside of the hollow molded body disposed in the ejection section in the ejection process C during the blow molding process B in the next molding cycle to cool the hollow molded body disposed in the ejection section to solidify the container shape.
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.01 秒)
