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11. 发明专利

JPH11105078A NOZZLE THERMOCOUPLE ATTACHING MECHANISM 失效
公开(公告)号：JPH11105078A
公开(公告)日：1999-04-20
申请号：JP29158197
申请日：1997-10-08
申请人： JAPAN STEEL WORKS LTD
发明人： SHIROGANEYA TSUKASA , YAKIMOTO KAZUTOSHI , ITO HIROSHI
IPC分类号： B29C45/26 , B29C45/17 , B29C45/20 , B29C45/78 , B29C48/92 , B29C47/92
摘要： PROBLEM TO BE SOLVED: To provide a nozzle thermocouple attaching mechanism capable of accurately measuring the temp. of the designated region of a nozzle without receiving the effect of the heat flow from the heater mounted on the nozzle in good response and reproducibility. SOLUTION: A heat insulating member 12 having a shape capable of hermetically sealing a large diameter temp.-sensitive member 11 and a thermocouple inserting hole 4 is mounted on the leading end part of a thermocouple 10 measuring nozzle temp. The thermocouple inserting hole 4 bored in a nozzle 1 at a predetermined region is formed into a shape having a production diameter capable of bringing the temp.-sensitive member 11 to a close contact state and the predetermined angle corresponding to the leading end part of the thermocouple 10 and the leading end part of the thermocouple 10 is inserted into the thermocouple inserting hole 4 under pressure by the ring-shaped pressing metal fitting 5 through the heat insulating member 12 and the thermocouple 10 is attached and fixed to the nozzle 1. The thermocouple inserting hole 4 is brought to a hermetically sealed state by the heat insulating member 12 and the contact area of the temp.-sensitive part of the thermocouple 10 can be increased by the temp.-sensitive member 11.

12. 发明专利

JPH10272665A METHOD AND DEVICE FOR CONTROLLING TEMPERATURE OF MOLDING WORKING MACHINE 失效
公开(公告)号：JPH10272665A
公开(公告)日：1998-10-13
申请号：JP9434397
申请日：1997-03-31
申请人： JAPAN STEEL WORKS LTD
发明人： ITO HIROSHI , YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/62 , B29C45/74 , B29C45/78 , B29C47/82 , B29C48/92 , B29C47/92
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling temperature of a molding working machine in which temperature compensation operation is rapid and optimum response is obtained at low cost even in a transient region, not to mention a steady region. SOLUTION: A heating cylinder (S) of an injection molding machine and an extruder or the like is divided into a plurality of pieces of temperature control zones in the axial direction. Manipulated variable (u(k)) controlling heaters (H) provided in accordance with the divided respective temperature control zones is a variable obtained by adding both a main manipulated variable (u1(k)), which is obtained by calculation according to deviation (e(k)) of setting temperature (r(k)) and detection temperature (y(k)) of the temperature control zones, and compensating manipulated variable (u2(k)), which is similarly obtained by proportional calculation according to deviation (e(k)) of setting temperature (r(k)) and detection temperature (y(k)) of the temperature control zones.

13. 发明专利

JPH1086203A NOZZLE TEMPERATURE CONTROL METHOD FOR INJECTION MOLDING MACHINE 失效
公开(公告)号：JPH1086203A
公开(公告)日：1998-04-07
申请号：JP26138096
申请日：1996-09-10
申请人： JAPAN STEEL WORKS LTD
发明人： SHIROGANEYA TSUKASA , YAKIMOTO KAZUTOSHI , ITO HIROSHI
IPC分类号： B29C45/20 , B29C45/74 , B29C45/78
摘要： PROBLEM TO BE SOLVED: To stabilize fluidity of a molten molding material to be filled into a mold cavity by maintaining a temperature at a nozzle tip constant during nozzle touch. SOLUTION: A pressing liquid of a predetermined pressing force is led into a forward chamber 5a of an injection device forward/backward cylinder 5, an injection device E is moved forward, and a nozzle 3 is pressed to a mold 9 by a predetermined nozzle pressing force for nozzle touch. During the nozzle touch, a temperature of a tip of a nozzle is detected by a temperature sensor 7. A difference value between a detected temperature of the nozzle tip and a set temperature which is set by a setting device 11 is calculated by a comparator 12. Based on the difference value, a correction nozzle pressing force for making the temperature of the nozzle tip approximate to the set temperature is calculated at a computing element 13. A pressure control valve 15 is controlled through a converter 14 for performing the nozzle touch by the correction nozzle pressing force so as to change the pressure of the pressuring fluid to be led into the forward chamber 5a.

14. 发明专利

JPH09225977A SCREW-TYPE INJECTION MOLDING APPARATUS 失效
公开(公告)号：JPH09225977A
公开(公告)日：1997-09-02
申请号：JP6005396
申请日：1996-02-22
申请人： JAPAN STEEL WORKS LTD
发明人： YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA , ITO HIROSHI
IPC分类号： B29C45/52 , B29C45/63 , B29C45/76 , B29C45/78
摘要： PROBLEM TO BE SOLVED: To prevent positively the counterflow of molten resin at a starting period of injection and dwelling operation and the flow of molten resin from a screw groove to a reservoir from the completion of a plasticizing process through the starting of an injection and dwelling process, and also accurately control the condition of resin immediately before flowing in the reservoir. SOLUTION: A torpedo 7 is disposed axially slidably within the cylinder head 4, and a screw head 3 is fittingly inserted slidably in the peripheral and axial direction. The torpedo 7 is formed to be advanced and retreated axially by means of torpedo linearly driving means 16, and during the period of a plasticiazing process, the torpedo 7 is retreated so as to create a space S between the conical inner wall surface 4a and the sealing part 7c isolated thereby from each other, so that molten resin flows into a reservoir 6 from the screw side through an outer wall groove 8a. At the completion of a plasticizing process, the torpedo 7 is advanced in order to bring the sealing 7c into contact with the conical inner wall surface 4a, thus, precluding molten resin from counter flowing positively in the starting period of a dwelling process.

15. 发明专利

JPH09225971A INJECTION MOLDING DIE HAVING THERMO-COUPLE AND INJECTION MOLDING DIE TEMPERATURE-MEASURING DEVICE EQUIPPED THEREWITH 失效
公开(公告)号：JPH09225971A
公开(公告)日：1997-09-02
申请号：JP5690896
申请日：1996-02-20
申请人： JAPAN STEEL WORKS LTD
发明人： YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA , ITO HIROSHI
IPC分类号： B29C45/26 , B29C45/73 , B29C45/78
摘要： PROBLEM TO BE SOLVED: To reduce a manufacturing cost while fluctuation in surface temperature of a mold can be quickly accurately detected. SOLUTION: For a part wherein an influence of heat flux by heat medium flowing in a heat medium channel 22b in an outer wall surface of a stationary side mold 22 is not received, and fluctuation in outside air temperature has a direct influence, a thermo-couple 3 is fitted by sticking a pressure sensitive adhesive tape 21 under a state of putting its temperature detecting part 3a between an outer wall surface and the pressure sensitive adhesive tape 21. In the same way as this, for a part wherein an influence of heat flux by heat medium flowing through a heat medium passage 23b in an outer wall surface of a movable side mold 23 is not received, and fluctuation in outside air temperature has a direct influence, the thermo-couple is fitted by sticking the pressure sensitive adhesive 21 onto the outer wall surface under a state of putting the temperature detecting part 3a of the thermo-couple 3 between the outer wall surface and the pressure sensitive adhesive tape 21.

16. 发明专利

JPH06320588A DWELLING CONTROL METHOD AND APPARATUS IN INJECTION MOLDING 失效
公开(公告)号：JPH06320588A
公开(公告)日：1994-11-22
申请号：JP13902593
申请日：1993-05-17
申请人： JAPAN STEEL WORKS LTD
发明人： YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/50 , B29C45/77
摘要： PURPOSE:To control the quality of a molded product with high accuracy by calculating the pressure of the resin in a mold at a specific time and calculating a dwelling set value necessary for achieving the pressure of the resin and controlling dwell pressure on the basis of the calculated value. CONSTITUTION:At the point of time immediately before a screw advances at the beginning of the filling stage of a molten resin to a cavity, the temp. of the tip part of a nozzle, the temp. of a sprue part, the temp. of the wall surface of the cavity and the temp. of cooling water are measured and, on the basis of the measured values, the temp. of the resin in a mold at the time when the wt. of a molded product at a dwelling stage is decided is estimated. Subsequently, the pressure of the resin in the mold at this time is calculated from the estimation value and a dwelling set value is further calculated. At a dwelling stage, dwell pressure is controlled on the basis of this dwelling set value. By this constitution, the fluctuations of the quality of a molded product caused by a temp. change are eliminated by simple constitution without providing a resin pressure sensor and a resin temp. sensor in the mold and the molded product having high dimensional accuracy can be stably produced.

17. 发明专利

JPH0513809B2 失效
公开(公告)号：JPH0513809B2
公开(公告)日：1993-02-23
申请号：JP29308089
申请日：1989-11-10
申请人： JAPAN STEEL WORKS LTD
发明人： YAKIMOTO KAZUTOSHI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/57 , B29C45/50 , B29C45/77

18. 发明专利

JPH0441895B2 失效
公开(公告)号：JPH0441895B2
公开(公告)日：1992-07-09
申请号：JP27878186
申请日：1986-11-25
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , SAKAI TADAKI , YAMAMOTO MICHIAKI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/50 , B29C45/57 , B29C45/77

19. 发明专利

JPS60119734A RESIN SEALING METHOD FOR ELECTRONIC PARTS 失效
公开(公告)号：JPS60119734A
公开(公告)日：1985-06-27
申请号：JP22740983
申请日：1983-12-01
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , SAKAI TADAKI , SHIROGANEYA TSUKASA
IPC分类号： H01C17/02 , B29C45/14 , B29K63/00 , B29L31/34 , H01G4/00 , H01G4/224 , H01L21/56
摘要： PURPOSE:To enable to perform a continuous automatic molding as well as to contrive improvement in dimensional accuracy by a method wherein, using low viscosity epoxy resin which is in viscous state at normal temperature, an injection molding is performed at low pressure using a screw type injection molding machine. CONSTITUTION:Using low viscosity epoxy resin which is viscous at normal temperature, an injection molding is performed at low pressure using a screw type injection molding machine. The viscosity of said epoxy resin is to be at 10 -10 poise in a mold when injection molding is performed. With this viscosity, no electronic parts such as the bonding wire of IC and the like are damaged or deformed, and the viscosity of that extent is necessary for the performance of an injection molding. When the viscosity is increased to 10 poise or above, injection output is made larger, and the bonding wire of IC and the like are damaged or deformed. Also, the epoxy resin used contains an inorganic filler of 40- 80wt%. As a result, the characteristics of electric parts can be maintained, and the damage generated by thermal and mechanical factors can be suppressed to the minimum.

20. 发明专利

JPS5823445A SEALING METHOD FOR ELECTRONIC PART 失效
公开(公告)号：JPS5823445A
公开(公告)日：1983-02-12
申请号：JP12339981
申请日：1981-08-06
申请人： JAPAN STEEL WORKS LTD
发明人： SAKAI TADAKI , YAMAMOTO SHINJI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/00 , B29C35/00 , B29C45/14 , H01L21/56
摘要： PURPOSE:To prevent breaks and deformations of bonded metallic wires, by controlling the flowing action of a fused plastic in a cavity, when sealing electronic parts with a thermo-plastic. CONSTITUTION:Gates 5, 5 are provided opposied each other on both sides of the metal mold cavity 7, and these gates 5, 5 are arranged on the back side of a lead frame 3. The flowing state of the fused thermoplastic 1 in the metal mold cavity 7 are drivided into four pressure flows a, a' and b, b' with the lead frame 3 as a border on the front side, back side and right-left thereof. Besides, the pressure flows b, b' on the front side of the lead frame 3 whereon an IC chip 4 is mounted relatively delay more than the pressure flows a, a' on the back side. Therefore, the pressure flows a, a' on the back side of the lead frame 3 turn confluent faster than the pressure flows b, b' on the front side at the center of the metal mold cavity 7 and flow onto the front side of said frame 3 from the aperture around the IC chip 4 so as to support the metallic wires 2 from below.

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