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21. 发明公开

EP0230488A2 Method for controlling back pressure in electrically-operated injection apparatus 失效
标题翻译： Verfahren zum Steuern des Gegendrucks在einer elektrischbetätigbarenSpritzgiessvorrichtung。
公开(公告)号：EP0230488A2
公开(公告)日：1987-08-05
申请号：EP86100729.2
申请日：1986-01-21
申请人： NISSEI PLASTIC INDUSTRIAL CO., LTD.
发明人： Shimizu, Miyuki , Yamazaki, Yoshihiko
IPC分类号： B29C45/77 , B29C45/50
CPC分类号： B29C45/5008 , B29C45/77 , B29C2045/1792 , B29C2045/5032 , B29C2045/5036 , B29C2945/76013 , B29C2945/76214 , B29C2945/76381 , B29C2945/76481
摘要： The present invention provides a method for controlling back pressure in an electrically-operated injection apparatus, in which apparatus, rotation and forward movement of an injection plunger (1) within an injection heating tube (2) are carried out by an electric motor (19) as a driving source, backward motion of the injection plunger (1) during the charging of material is converted into rotational motion, and a rotating force thereof is controlled to control back pressure of the injection plunger (1), the method being characterized by using an electric motor (22) as a back pressure control means for the injection plunger (1), electrically measuring a backward force of the injection plunger (1) or molten material pressure within the injection heating tube (2) as the back pressure, and driving and controlling the motor (22) by feedback control so that the back pressure is in coincidence with a set value.
摘要翻译：本发明提供了一种用于控制电动注射装置中的背压的方法，其中注射加压管（2）内的注射柱塞（1）的装置，旋转和向前运动由电动机（19））作为驱动源，将材料充填期间的注射柱塞（1）的向后运动转换成旋转运动，并且控制其旋转力来控制注射柱塞（1）的背压，该方法的特征在于使用电动机（22）作为注射柱塞（1）的背压控制装置，电喷射注射柱塞（1）的后向力或喷射加热管（2）内的熔融材料压力作为背压，并且通过反馈控制来驱动和控制电动机（22），使得背压与设定值一致。

22. 发明公开

EP4324619A1 INJECTION MOLDING METHOD AND INJECTION MOLDING MACHINE 审中-公开
公开(公告)号：EP4324619A1
公开(公告)日：2024-02-21
申请号：EP23189965.9
申请日：2023-08-07
申请人： Nissei Plastic Industrial Co., Ltd.
发明人： MURATA, Hirofumi , HASYASHI, Kenichi
IPC分类号： B29C45/76 , B29C45/80
摘要： A predetermined mold gap Lg is provided beforehand between a movable mold Dm and a stationary mold Dc of a mold D by a mold clamping device Mc. A mold clamping pressure Pc is set to zero, and a predetermined back pressure Pb is set for the movable mold Dm. Subsequently, the injection device Mi is caused to start injection of the molten resin Rm into the mold D for which the mold gap Lg, the mold clamping pressure Pc, and the back pressure Pb have been set (S7). When a predetermined injection end condition set beforehand (S9) is satisfied as a result of progress of an injection filling process (S8), a filling end process (S10) of ending the injection filling process (S8) is performed.

23. 发明公开

EP4311648A1 INJECTION SCREW FOR RIGID VINYL CHLORIDE 审中-实审
公开(公告)号：EP4311648A1
公开(公告)日：2024-01-31
申请号：EP23176121.4
申请日：2023-05-30
申请人： Nissei Plastic Industrial Co., Ltd.
发明人： OGIWARA, Haruo
IPC分类号： B29C45/00 , B29C45/60 , B29K27/06
摘要： A rigid vinyl chloride injection screw (10) which kneads and injects rigid vinyl chloride includes a flight (11) and a groove (12). LID is set to be 19,1 where L is an effective screw length and D is a diameter of the injection screw (10). tf/tm is set to be 2,5 where tf is the width of the flight (11) at a supply portion and tm is the width of the flight (11) at a measure portion. hf/hm is set to be 2,1 where hf is the depth of the groove (12) at the supply portion and hm is the depth of the groove (12) at the measure portion. A compression ratio that is calculated from ((P - tf) ×hf)/((P - tm) × hm) is set to be 1,74 where P is a pitch of the injection screw (10).

24. 发明公开

EP4286133A1 METHOD FOR MOLDING RESIN MATERIAL MIXED WITH PULVERIZED MATERIAL 审中-实审
公开(公告)号：EP4286133A1
公开(公告)日：2023-12-06
申请号：EP23175589.3
申请日：2023-05-26
申请人： Nissei Plastic Industrial Co., Ltd.
发明人： KOZUKA, Makoto
IPC分类号： B29C45/76 , B29C45/18
摘要： The bulk densities of a virgin material Qp and a pulverized material Qc are previously measured, based on pulverized material bulk density data Dc related to the bulk density of the pulverized material Qc and virgin material bulk density data Dp related to the bulk density of the virgin material Qp obtained by the measurement, a conversion coefficient Kc for a predetermined molding condition when the virgin material Qp and the pulverized material Qc are mixed in a predetermined ratio is determined and registered. When the pulverized material Qc is used, at least the bulk density of the pulverized material Qc which is used is measured, and based on the pulverized material bulk density data Dc, the virgin material bulk density data Dp obtained by the measurement, and the conversion coefficient Kc, processing for modifying the molding condition is performed.

25. 发明公开

EP4212307A1 INJECTION MOLDING MACHINE 审中-实审
公开(公告)号：EP4212307A1
公开(公告)日：2023-07-19
申请号：EP21866914.1
申请日：2021-09-14
申请人： Nissei Plastic Industrial Co., Ltd.
发明人： KATO Toshimi , MURATA Hirofumi , YODA Hozumi
IPC分类号： B29C45/50 , B29C45/60 , B29C45/64 , B29C45/76
摘要： A partial reflux injection function part 5 is provided according to which resin R at the front side of a screw head portion 4s is injected into the metal mold 2 to fill the metal mold 2 with the resin R in synchronization with the refluxing of a predetermined amount of the reflux resin Rm to be used as a part of the resin R to the screw body part 4m side at the rear side of the screw head portion 4s through the inner side of the screw head portion 4s and/or the outer periphery side of the screw head portion 4s. A control function is provided that sequentially performs a plasticization step Wi1 to rotate the screw 4 in the heating cylinder 3 to thereby subject the resin in the heating cylinder 3 to a plasticization processing; an injection step Wi2 to allow, after the completion of the plasticization step Wi1, the screw 4 to move forward to thereby inject, into the metal mold 2, a part of the plasticized resin R accumulated at the front side of the screw head portion 4s of the screw 4 to fill the metal mold 2 with the resin; and a plasticization promotion step Wi3 to allow, after the completion of the injection step Wi2, a part of the remaining part of the accumulated plasticized resin R to be refluxed as the reflux resin Rm to the rear side of the screw head portion 4s.

26. 发明公开

EP4101619A1 INJECTION MOLDING ASSISTANCE DEVICE AND INJECTION MOLDING MACHINE COMPRISING SAME 审中-实审
公开(公告)号：EP4101619A1
公开(公告)日：2022-12-14
申请号：EP21750191.5
申请日：2021-02-05
申请人： Nissei Plastic Industrial Co., Ltd.
发明人： KOZUKA, Makoto
IPC分类号： B29C45/76
摘要： To provide an injection molding support device that is capable of providing support in determining whether or not a condition at the time of injection filling is an appropriate value, and/or is capable of presenting an optimum condition at the time of the injection filling.
The above-described problem is solved by an injection molding support device comprising a setting unit that sets basic information such as resin material data, screw data, and heating cylinder data, and sets constraint information such as a constraint condition for obtaining an optimum condition, a computation unit that computes an estimated solid phase rate of the resin material on the basis of the basic information and the constraint information by a high-speed computation method using an optimum mathematical processing system, and a display unit that displays a decision index in accordance with a value of the estimated solid phase rate. The estimated solid phase rate is the estimated solid phase rate of the resin material at the screw tip end, and may further be displayed as a profile composed of two or more estimated solid phase rates including at least a first estimated solid phase rate of the resin material at the screw tip end and a second estimated solid phase rate of the resin material not at the screw tip end.

27. 发明公开

EP1120222A3 Preplasticizing type injection apparatus 失效
标题翻译：预塑型注射装置
公开(公告)号：EP1120222A3
公开(公告)日：2002-02-06
申请号：EP01109519.7
申请日：1995-03-16
申请人： NISSEI PLASTIC INDUSTRIAL CO., LTD.
发明人： Takizawa, Kiyoto , Shimizu, Hisato
IPC分类号： B29C45/54 , B29C45/53
CPC分类号： B29C45/53 , B29C45/54
摘要： A preplasticizing type injection apparatus comprising an injection cylinder (12) internally provided with an injection plunger (10) and a plasticizing cylinder (22) provided in the inside with a plasticizing screw (20) or plunger, said injection and plasticizing cylinders (12,22) being arranged in juxtaposition and held in communication with each other by way of a resin conduit (3) connecting an inlet path (15) of the injection cylinder (12) arranged at the front end thereof and defining the limit of advancement of the plunger (10) and an outlet path (21) of the plasticizing cylinder (22) arranged at the front end thereof so that a front end portion of the injection cylinder (12) is charged with molten resin in the plasticizing cylinder and the resin in the front end portion of the injection cylinder is injected into a mold by means of the plunger, characterized in that it further comprises a check valve (28) arranged at the front end of the plasticizing cylinder and realized in the form of a mushroom having a substantially conical head and an inclined rear side, a front end portion of the plasticizing cylinder being provided with a recess having a profile corresponding to that of the conical head of the check valve (28) for receiving the check valve (28) with a gap arranged between the valve and the wall of the recess to secure a resin flow path held in communication with the resin conduit (3) of the apparatus, and an annular valve seat disposed vis-a-vis the inclined rear side of the check valve in the cylinder.
摘要翻译：一种预塑化型注射装置，其包括内部设置有注射柱塞（10）的注射缸（12）和内部设置有塑化螺杆（20）或柱塞的塑化缸（22），所述注射缸体和塑化缸体 22）通过连接注射缸（12）的入口路径（15）的树脂导管（3）相互并排布置并保持彼此连通，所述注入缸（12）布置在其前端并限定所述注射缸柱塞（10）和设置在其前端的塑化筒（22）的出口路径（21），使得注射筒（12）的前端部分充满熔化树脂在塑化筒中，通过柱塞将注射缸的前端部分注入到模具中，其特征在于，其还包括设置在塑化缸的前端处的止回阀（28），并且以fo 具有基本上圆锥形头部和倾斜后侧的蘑菇，塑化筒的前端部分设有凹部，该凹部的轮廓与止回阀（28）的圆锥形头部的轮廓相对应，用于接收止回阀（28），在所述阀与所述凹部的壁之间设有间隙，以确保与所述装置的所述树脂导管（3）保持连通的树脂流动路径;以及环形阀座，所述环形阀座相对于所述倾斜后部气缸内止回阀的一侧。

28. 发明公开

EP1120222A2 Preplasticizing type injection apparatus 失效
公开(公告)号：EP1120222A2
公开(公告)日：2001-08-01
申请号：EP01109519.7
申请日：1995-03-16
申请人： NISSEI PLASTIC INDUSTRIAL CO., LTD.
发明人： Takizawa, Kiyoto , Shimizu, Hisato
IPC分类号： B29C45/54 , B29C45/53
CPC分类号： B29C45/53 , B29C45/54
摘要： A preplasticizing type injection apparatus comprising an injection cylinder (12) internally provided with an injection plunger (10) and a plasticizing cylinder (22) provided in the inside with a plasticizing screw (20) or plunger, said injection and plasticizing cylinders (12,22) being arranged in juxtaposition and held in communication with each other by way of a resin conduit (3) connecting an inlet path (15) of the injection cylinder (12) arranged at the front end thereof and defining the limit of advancement of the plunger (10) and an outlet path (21) of the plasticizing cylinder (22) arranged at the front end thereof so that a front end portion of the injection cylinder (12) is charged with molten resin in the plasticizing cylinder and the resin in the front end portion of the injection cylinder is injected into a mold by means of the plunger, characterized in that it further comprises a check valve (28) arranged at the front end of the plasticizing cylinder and realized in the form of a mushroom having a substantially conical head and an inclined rear side, a front end portion of the plasticizing cylinder being provided with a recess having a profile corresponding to that of the conical head of the check valve (28) for receiving the check valve (28) with a gap arranged between the valve and the wall of the recess to secure a resin flow path held in communication with the resin conduit (3) of the apparatus, and an annular valve seat disposed vis-a-vis the inclined rear side of the check valve in the cylinder.

29. 发明授权

EP0239682B1 Injection molding apparatus1 失效
标题翻译：注射成型设备1
公开(公告)号：EP0239682B1
公开(公告)日：1992-01-15
申请号：EP86201955.1
申请日：1982-10-07
申请人： NISSEI PLASTIC INDUSTRIAL CO., LTD.
发明人： Yamazaki, Yoshihiko
IPC分类号： B29C45/70 , B29C45/50 , B29C45/66
CPC分类号： B29C45/70 , B29C45/4005 , B29C45/5008 , B29C2045/1792 , B29C2045/4042 , B29C2045/5036 , B29C2045/5076

30. 发明公开

EP0345353A1 MACHINING CENTER 失效
标题翻译： BEARBEITUNGSZENTRUM。
公开(公告)号：EP0345353A1
公开(公告)日：1989-12-13
申请号：EP88909371.2
申请日：1988-10-28
申请人： NISSEI PLASTIC INDUSTRIAL CO., LTD.
发明人： TAKAYAMA, Kazutoshi Nissei Plastics Industrial
IPC分类号： B23P23/04 , B23H5/00
CPC分类号： B23Q11/0042 , B23H5/04 , B23P23/02 , B23Q3/15513 , B23Q39/02 , B24B53/001 , Y10T483/16 , Y10T483/17 , Y10T483/1779
摘要： This invention relates to a standalone machining center which can perform cutting, electric discharge machining, electrochemical grinding and the like. The machining center comprises means for moving a work table (1) on a machine bed (2) in the direction of X- and Y-axes, a machining unit (9) including a spindle (10) having a chuck (14) to the tip of which various tools and discharge electrode can be fitted, a motor (15) for rotating the spindle and a brake (12) for fixing, means for moving the machining unit (9) in the direction of a Z-axis, automatic tool change means (18) for keeping the various tools and the discharge electrode and selectively supplying them to the chuck, and a machining power source (22) connected to a discharge electrode (26) or a grind stone fitted to the chuck (14) and to a work (4) in said liquid tank or a nozzle for a coolant and applying a D.C. current to them.
摘要翻译：加工中心包括用于沿X方向和Y轴方向移动机床（2）上的工作台（1）的驱动器和加工单元（9）。加工单元包括：主轴（10），其具有能够安装各种工具和放电电极的尖端的卡盘（14），使主轴和制动器（12）旋转的马达（15）停止。包括用于沿Z轴方向移动加工单元（9）的装置。自动换刀器（18）保持各种工具和放电电极，并选择性地将它们提供给卡盘。加工动力源（22）与安装在卡盘（14）上的放电电极（26）或砂轮相连接，并连接到液罐中的工件（4）或用于冷却剂的喷嘴，并向其施加直流电流。

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