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1. 发明专利

DE4208940C2 未知
公开(公告)号：DE4208940C2
公开(公告)日：1999-12-09
申请号：DE4208940
申请日：1992-03-19
申请人： JAPAN STEEL WORKS LTD
发明人： YAKEMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/77 , B29C45/78
摘要： A method of controlling holding pressure in an injection molding operation and an apparatus therefor, wherein the quality of molded products can be controlled with a high accuracy without the need for a pressure sensor in a mold and without requiring any additional data such as the thickness of a molded product, the effective heat diffusion rate, and so on. Further, a method for estimating resin temperature in injection molding and an appartus therefor, wherein in-mold resin temperature in a holding pressure and cooling stage is estimated during injection at a high speed and with a high accuracy.

2. 发明专利

DE4208940A1 未知
公开(公告)号：DE4208940A1
公开(公告)日：1992-09-24
申请号：DE4208940
申请日：1992-03-19
申请人： JAPAN STEEL WORKS LTD
发明人： YAKEMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/77 , B29C45/78
摘要： A method of controlling holding pressure in an injection molding operation and an apparatus therefor, wherein the quality of molded products can be controlled with a high accuracy without the need for a pressure sensor in a mold and without requiring any additional data such as the thickness of a molded product, the effective heat diffusion rate, and so on. Further, a method for estimating resin temperature in injection molding and an appartus therefor, wherein in-mold resin temperature in a holding pressure and cooling stage is estimated during injection at a high speed and with a high accuracy.

3. 发明专利

JPH11227019A METHOD AND APPARATUS FOR CONTROLLING TEMPERATURE OF INJECTION MACHINE 失效
公开(公告)号：JPH11227019A
公开(公告)日：1999-08-24
申请号：JP5127198
申请日：1998-02-18
申请人： JAPAN STEEL WORKS LTD
发明人： ITO HIROSHI , YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/74 , B29C45/78
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling the temp. of an injection machine for reducing the temp. change of a resin material to obtain a molded product having high and constant quality. SOLUTION: The temp. of a heating means H2 provided on the outer peripheral surface of a heating cylinder 1 is controlled on the basis of the set temp. Ts set by an operator from the flashing time before molding or the start time of molding and, when an actually measured molding cycle time exceeds the upper and lower limit values of a preset molding cycle time, the set temp. Ts is controlled so as to be changed over to the actually measured temp. Tj of a resin during molding.

4. 发明专利

JPH0663991A METHOD AND APPARATUS FOR PREVENTING ADHERENCE OF RESIN IN PURGING PROCESS OF INJECTION MOLDING MACHINE 失效
公开(公告)号：JPH0663991A
公开(公告)日：1994-03-08
申请号：JP24407692
申请日：1992-08-21
申请人： JAPAN STEEL WORKS LTD
发明人： TAKUMI KOUJI , YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/17 , B29C45/84
摘要： PURPOSE:To prevent a danger such as a scald at the time of removing a peeling of painting, a dirt, and resin (purging material) on a bed of an injection molding machine with the resin (purging material) in the process of purging in the machine. CONSTITUTION:A PTFE sheet 4 is disposed in a range in which resin can be adhered in a purging process on a bed 3 disposed on a lower surface of a cylinder 2 from a stationary board 1 of an injection molding machine.

5. 发明专利

JPH05318548A METHOD FOR CONTROLLING MOLDING CONDITION IN INJECTION MOLDING 失效
公开(公告)号：JPH05318548A
公开(公告)日：1993-12-03
申请号：JP15266092
申请日：1992-05-20
申请人： JAPAN STEEL WORKS LTD
发明人： YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/78
摘要： PURPOSE:To realize a molding condition control method in injection molding capable of efficiently improving the sink of a molded product. CONSTITUTION:After a molding condition becomes stable, one molding cycle is executed at molten resin set temp. TRS and mold set temp. TP and the molded product taking-out temp. in this molding cycle is set to TP (step S1). Next, the change quantity of molten resin set temp. is set to predetermined temp. ATR in the next molding cycle in order to improve the sink of a molded product and the molten resin set temp. of this molding cycle is set so as to be higher than the molten resin set temp. TPS of the previous molding cycle by ATR (step S2). At this time, new mold set temp. TWS is operated on the basis of formula TWS'=TWS-{(TP-TWS)/(TRS-TP)}X(TRS'-TRS) and changed (lowered) (step 3) to execute a molding cycle.

6. 发明专利

JPH0577298A METHOD AND DEVICE FOR CONTROLLING DWELLING IN INJECTION MOLDING MACHINE 失效
公开(公告)号：JPH0577298A
公开(公告)日：1993-03-30
申请号：JP7817191
申请日：1991-03-19
申请人： JAPAN STEEL WORKS LTD
发明人： YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/50 , B29C45/57 , B29C45/77
摘要： PURPOSE:To perform a dwelling control without providing a pressure sensor in a mold and without requiring additional data. CONSTITUTION:In a loading step, resin temperatures in mold in a dwelling step are estimated based on mold temperatures and resin temperatures in a resin passage (step 27) and then resin pressures in mold required for achieving product weight, as a target, are obtained from the estimated resin temperatures in mold (step 28) and dwelling pressure set value is obtained from the resin pressure in mold (step 29) and in a dwelling step, a dwelling control is performed based on the dwelling pressure set value (step 30, 31).

7. 发明专利

JPH01288414A METHOD AND APPARATUS FOR INJECTION MOLDING 失效
公开(公告)号：JPH01288414A
公开(公告)日：1989-11-20
申请号：JP11812188
申请日：1988-05-17
申请人： JAPAN STEEL WORKS LTD
发明人： SHIROGANEYA TSUKASA , YAMAMOTO SHINJI , KATO MIKIO
IPC分类号： B29C45/00 , B29C45/03 , B29C45/07 , B29C45/20 , B29C45/74
摘要： PURPOSE:To keep molten resin in a specified temperature state, and prevent the occurrence of nozzle plugging, mold defectiveness and the like, by placing a nozzle into contact with a heat insulation block for closing the nozzle orifice in the case where the nozzle is moved in a transverse direction relative to molds for making the nozzle orifice perform opening and closing operations. CONSTITUTION:During the period of a nozzle closing process, mold opening process, molding article removing process and mold closing process in an injection molding process, a nozzle 47 is held in contact with a heat insulation block 26. The heat insulation block 26 is being heated by means of a heater 28 provided therein. Consequently, the heat insulation block 26 is kept in a constant temperature state irrespective of the temperature change of a fixed mold 16, and since the nozzle 47 contacts therewith, the nozzle 47 may also be kept in a specified temperature state. Namely, even in the case where the temperature of the fixed mold 16 is lowered, the nozzle 47 can be kept in a specified temperature state higher than that of the fixed mold. Thus, the resin within the nozzle 47 can be prevented from cooling and solidifying, and generating mold defectiveness due to the temperature difference of a molten resin.

8. 发明专利

JPS641289B2 失效
公开(公告)号：JPS641289B2
公开(公告)日：1989-01-11
申请号：JP5246083
申请日：1983-03-30
申请人： JAPAN STEEL WORKS LTD
发明人： SAKAI TADAKI , YAMAMOTO SHINJI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/00 , B29C35/00 , B29C45/26 , B29C45/27

9. 发明专利

JPS5827326A RESIN SEALING METHOD OF IC CHIPS 失效
公开(公告)号：JPS5827326A
公开(公告)日：1983-02-18
申请号：JP12548481
申请日：1981-08-11
申请人： JAPAN STEEL WORKS LTD
发明人： SAKAI TADAKI , YAMAMOTO SHINJI , SHIROGANEYA TSUKASA
IPC分类号： B29C35/00 , B29C45/00 , B29C45/14 , H01L21/56
摘要： PURPOSE:To provide a simple resin sealing of IC chips using thermal plastic resin by filling a cavity containing the IC chip with molten thermal plastic resin injected from a injection molding unit with injection pressure 10-50kg/cm . CONSTITUTION:A lead frame is placed in the cavity 5 so that the IC chip 2 is bonded to its top surface with metal wire 3. The cavity 5 has a gate 4 facing the bottom surface of the lead frame in a position corresponding to the chip 2. Then, molten thermal plastic resin is injected from an injector into the cavity 5 through the gate 4 with the injection pressure of 10-50kg/cm , thus filling the cavity 5. The chip 2 is thus sealed without breakage of wires 3.

10. 发明专利

JPS52139167A MOLD CRAMPING DEVICE FOR OPPOSING TYPE INJECTION MOLDER 失效
公开(公告)号：JPS52139167A
公开(公告)日：1977-11-19
申请号：JP5607276
申请日：1976-05-18
申请人： JAPAN STEEL WORKS LTD
发明人： YOKOYAMA KAZUHISA , NAGAI MITSUHIRO , YONEKAWA SHIGEKI , SHIROGANEYA TSUKASA
IPC分类号： B22D17/26 , B29C35/00 , B29C45/00 , B29C45/12 , B29C45/17

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