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11. 发明专利

JPS59135135A Coating method by injection molding 失效
标题翻译：注塑成型方法
公开(公告)号：JPS59135135A
公开(公告)日：1984-08-03
申请号：JP15778182
申请日：1982-09-10
申请人： Nissei Plastics Ind Co
发明人： MINAMIMURA MASAAKI , TSUCHIYA YASUO , KANAI TOSHIYUKI
IPC分类号： B29C45/00 , B29C35/00 , B29C45/14 , B29C45/17 , B29C45/76 , B29C61/00
CPC分类号： B29C45/14073 , B29C2045/1409
摘要： PURPOSE:To perform resin coating even with respect to an object having a complicated shape with high accuracy, by performing the retraction operation of a holding member for holding the object inserted into a cavity in synchronous relation to the advancing distance of an injection piston. CONSTITUTION:In performing resin coating with respect to the surface of an object 4 by using an injection molding machine, a mold 1 is opened to insert the object 4 into a cavity 2 while holding members 3, 3 are protruded to hold the object 4 in the cavity 2. After the mold 1 is clamped, the nozzle of an injection machine 6 is contacted with a gate 5 while an injection screw 7 is advanced and molten resin is injected into the space between the cavity 2 and the object 4. A limit switch 11 is set to a position corresponding to a resin injection amount and, when said switch 11 is operated, a hydraulic machine 3a is operated to retract the holding members 3 and the leading ends thereof are pulled back to the cavity surface.
摘要翻译：目的：即使相对于具有高精度的复杂形状的物体也进行树脂涂覆，通过执行用于将插入空腔中的物体保持与注射活塞的前进距离同步的保持构件的缩回操作。构成：在使用注射成型机进行相对于物体4的表面的树脂涂布时，打开模具1，将物体4插入空腔2中，同时保持构件3,3突出以将物体4保持在空腔2.在模具1被夹紧之后，注射机6的喷嘴与门5接触，同时注射螺杆7前进并且熔融树脂注入空腔2和物体4之间的空间中。限制开关11被设定为与树脂注入量对应的位置，当操作开关11时，液压机3a被操作以缩回保持构件3，其前端被拉回到空腔表面。

12. 发明专利

JPH0752209A INJECTION MOLDING METHOD 失效
公开(公告)号：JPH0752209A
公开(公告)日：1995-02-28
申请号：JP22663193
申请日：1993-08-20
申请人： NISSEI PLASTICS IND CO
发明人： MINAMIMURA MASAAKI , SHIOZAWA FUMIO , MIYAJIMA MASAHIKO
IPC分类号： B29C45/46 , B29C45/56 , B29C45/57 , B29C45/70 , B29C45/76 , B29C45/77
摘要： PURPOSE:To make injection molding also of a molded product which is thin and has a large projection area easy, by a method wherein injection and filling of resin are performed by low pressure and inner pressure of a mold is equalized before dwelling. CONSTITUTION:Mold clamping force to be set up at an ordinary injection molding is taken as rated pressure and a mold is clamped by the clamping force lower than the rated pressure. Resin is injected and filled into a cavity by injection pressure of such an extent as to generate a gap corresponding to the mold clamping pressure and allowing an outflow of only gas. At a point of time when the cavity is filled with the resin, injection pressure is removed by interrupting temporarily injection and filling and the pressure is allowed to equalize by lowering the pressure. Dwelling is performed by boosting the injection pressure by boosting the clamping force up to the rated pressure.

13. 发明专利

JPH0626833B2 失效
公开(公告)号：JPH0626833B2
公开(公告)日：1994-04-13
申请号：JP4417590
申请日：1990-02-24
申请人： NISSEI PLASTICS IND CO
发明人： MINAMIMURA MASAAKI
IPC分类号： B29C45/00 , B29C33/12 , B29K105/20 , B29L31/34 , H01F41/02

14. 发明专利

JPH03246016A INJECTION MOLDING MACHINE OF PLASTIC MAGNET 失效
公开(公告)号：JPH03246016A
公开(公告)日：1991-11-01
申请号：JP4417590
申请日：1990-02-24
申请人： NISSEI PLASTICS IND CO
发明人： MINAMIMURA MASAAKI
IPC分类号： B29C45/00 , B29C33/12 , B29K105/20 , B29L31/34 , H01F41/02
摘要： PURPOSE:To make detachment of an excitation coil easy and contrive a cost reduction, by a method wherein the excitation coil is wound round a coil bobbin using a ferromagnetic material and possessing the necessary inside diameter, held into an annular groove by inserting into the circumference of a core along with the coil bobbin and the annular groove is closed flush with a mold fitting surface by a nonmagnetic plate having the mold fitting hole. CONSTITUTION:Excitation coils 12, 13 are wound round coil bobbins 16, 17 using a ferromagnetic metal and possessing the necessary inside diameter, inserted respectively into cores 10, 11 along with the coil bobbins 16, 17 and held down to the bottoms of annular grooves 8, 9. Openings of the annular grooves 8, 9 are provided with plate bodies 14, 15 of a nonmagnetic metal becoming outer flanges of the coil bobbins 16, 17 and closing the openings flush with a mold fitting surface of a platen body. Therefore, since a cover of a nonmagnetic material becomes unnecessary, detachment of the excitation coils 12, 13 from a stationary platen 1 and movable platen 5 becomes easy and it becomes not only that workability is favorable but also that a cost is reduced remarkably.

15. 发明专利

JPS6153211B2 失效
公开(公告)号：JPS6153211B2
公开(公告)日：1986-11-17
申请号：JP15778182
申请日：1982-09-10
申请人： NISSEI PLASTICS IND CO
发明人： MINAMIMURA MASAAKI , TSUCHA YASUO , KANAI TOSHUKI
IPC分类号： B29C45/00 , B29C35/00 , B29C45/14 , B29C45/17 , B29C45/76 , B29C61/00

16. 发明专利

JPS6129509A Mold 失效
标题翻译：模子
公开(公告)号：JPS6129509A
公开(公告)日：1986-02-10
申请号：JP15193084
申请日：1984-07-20
申请人： Nissei Plastics Ind Co
发明人： MIYAIRI KAZUYOSHI , MINAMIMURA MASAAKI
IPC分类号： B29C33/30 , B29C33/44 , B29C33/76
摘要： PURPOSE: To cause the exchanging operation of a slide core to be easy by a method in which the slide core provided in a insert die and its driving means are separately arranged in a mold body, and the slide core is connected to the driving means, when the insert die is inserted into the inserting depression.
CONSTITUTION: The flange part 10a provided at the tip of the cylinder fixed to the side wall of a mold body 4 is connected into the groove 9c graved on a slide holder 9 similarly to the flange part 8b of a slide core 7. This cylinder 10 causes the slide core 7 to advance and retract in a core 6 by way of the fitting member 8 of the slide holder 9. At the state where the cylinder 10 is driven to extension side and the mold is opened, the flange part 8b projected from the side wall of the core 6 is connected to the slide holder 9, when the insert die 6 is inserted into a core inserting depression 4a. As every core has the same shape and position as that of the flange part 8b, every core is able to be fitted to said flange part.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过将设置在插入模具中的滑动芯及其驱动装置分别设置在模具体中的方法，使滑动芯体的更换操作变得容易，并且滑动芯体与驱动装置连接，当插入模具插入插入凹陷时。构成：设置在固定于模具主体4的侧壁的圆筒的前端的凸缘部分10a与滑动芯体7的凸缘部分8b相似地连接在与滑动保持件9相同的凹槽9c中。该气缸10 使滑动芯7通过滑动保持器9的嵌合构件8在芯体6内前进退回。在气缸10被驱动到拉伸侧并且模具打开的状态下，凸缘部8b从当插入模具6插入到芯插入凹部4a中时，芯体6的侧壁连接到滑动架9。由于每个芯具有与凸缘部分8b的形状和位置相同的形状和位置，因此每个芯能够装配到所述凸缘部分。

17. 发明专利

JP2002240113A METHOD FOR INJECTION MOLDING EXTRA-THIN CONTAINER 失效
公开(公告)号：JP2002240113A
公开(公告)日：2002-08-28
申请号：JP2001040737
申请日：2001-02-16
申请人： ASAHI ELECTRIC WORKS LTD , MATSUSHITA ELECTRIC WORKS LTD , NISSEI PLASTICS IND CO
发明人： SUMIYA YOSHITERU , INAGAKI YOSHINORI , KATO KOICHI , KAWADE AKINOBU , NAKAYAMA MASAMICHI , TOYODA YOSHINORI , MINAMIMURA MASAAKI , NAGAYA FUMIKAZU , YUHARA KUNIO
IPC分类号： B29C45/26 , B29C45/56
摘要： PROBLEM TO BE SOLVED: To thin a body bottom of an extra-thin container by extrapolating an unfilled part generated from a difference of a flowing speed of a resin flow by a core with an excess resin generated by a compression. SOLUTION: A mold 1 having a shallow bottom cavity 2 for molding the extra-thin container body 10 and the core 3 for molding a body inner surface in the cavity is used. A method for injection molding the extra-thin container comprises the step of movably projecting the core 3 in the cavity except a compression margin of 2 to 5 times as large as a thickness of a body bottom. A side gate 5 is provided at the cavity 2. The method further comprises the steps of injection filling the resin 6 in the cavity 2 from the side gate 5, and primarily molding a body edge 11 and a thick body bottom by the core 3. The method also comprises the step of stopping injection filling of the resin 6 when centers of the body bottom of an opposite side to the gate 5 and the body edge are disposed at flowing spaces 7, 8 in an incomplete state. The method also comprises the steps of compression molding the thick body bottom to an extra-thin thickness by the core 3, and simultaneously extruding the excess resin in the spaces 7, 8 the extrapolate the resin of an uncompleted part.

18. 发明专利

JP2002240112A METHOD FOR INJECTION MOLDING PLATE-LIKE PRODUCT HAVING RECESS OF EXTRA-THIN BOTTOM THICKNESS 失效
公开(公告)号：JP2002240112A
公开(公告)日：2002-08-28
申请号：JP2001040730
申请日：2001-02-16
申请人： ASAHI ELECTRIC WORKS LTD , MATSUSHITA ELECTRIC WORKS LTD , NISSEI PLASTICS IND CO
发明人： SUMIYA YOSHITERU , INAGAKI YOSHINORI , KATO KOICHI , KAWADE AKINOBU , NAKAYAMA MASAMICHI , TOYODA YOSHINORI , MINAMIMURA MASAAKI , NAGAYA FUMIKAZU , YUHARA KUNIO
IPC分类号： B29C45/26 , B29C45/56 , B29L7/00
摘要： PROBLEM TO BE SOLVED: To excessively thin a recess bottom of a plate-like product by complementing an unfilled part generated from a difference of a flowing speed of a resin flow due to a core from a downstream side of a recess with an excess resin generated by a compression. SOLUTION: A method for injection molding the plate-like product having a recess of an extra-thin bottom thickness comprises the step of movably projecting the core 3 compression molded in an extra-thin recess, at one side of an inner surface of a plate-like body 10 in the cavity 2 except a compression margin of 2 to five times as large as a thickness of the recess bottom. A gate 4 is provided at a center of a cavity side opposed to the core 3. The resin 4 is injection filled toward the core of a side gate 4. The method further comprises the step of preceding injection molding of two corners of an upstream side by utilizing a flowing resistance of the core 3. The method also comprises the steps of stopping the injection filling of the resin 5 when the downstream side of the recess primarily molded by the core 3 and centers of both sides of a cavity end exist flowing spaces 6, 7 in an incomplete state. The method also comprises the steps of compression molding the recess bottom in an extra- thin thickness from the core 3 in this state, simultaneously extruding excess resin of the recess to the spaces 6, 7 to extrapolate the resin of the uncompleted part.

19. 发明专利

JPH07329114A MATERIAL FEEDER IN INJECTION MOLDING MACHINE 失效
公开(公告)号：JPH07329114A
公开(公告)日：1995-12-19
申请号：JP15515794
申请日：1994-06-13
申请人： NISSEI PLASTICS IND CO
发明人： MINAMIMURA MASAAKI , OKADA HARUO , HARUHARA MASAYUKI , TAKIZAWA KIYOTO
IPC分类号： B29C31/02 , B29C45/18 , B29C45/76
摘要： PURPOSE:To accurately and stably control the feed of molding materials (pellets and bulk fillers) of various forms. CONSTITUTION:A material feeder is provided with a feed screw 4 for controlling a feed rate of molding materials M which are supplied from a hopper 2 into a heating cylinder, and a regulating member 6 having a plurality of holes or cut-off parts 7..., which regulates a passing rate of the molding materials M fed from the feed screw 4 is provided on a material discharge side 5a of a material supply passage 5 into which the feed screw 4 is inserted.

20. 发明专利

JPH0788910A INJECTION MOLDING METHOD 失效
公开(公告)号：JPH0788910A
公开(公告)日：1995-04-04
申请号：JP25745793
申请日：1993-09-22
申请人： NISSEI PLASTICS IND CO
发明人： MINAMIMURA MASAAKI , SHIOZAWA FUMIO
IPC分类号： B29C45/57 , B29C45/50 , B29C45/77
摘要： PURPOSE:To efficiently mold a molded product generating no warpage by performing dwelling by back pressure after the release of the pressure of a resin charged by injection. CONSTITUTION:A resin is injected and charged into a cavity by the advance of a screw and the injection pressure at the point of time when the resin is charged into the cavity is set to a zero value to release the pressure of the resin. Thereafter, the weighing of the resin is started by the rotation of the screw and dwelling is performed by the back pressure at the time of weighing.

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