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1. 发明专利

JPH07156149A SEPARATION OF COATING FILM OF PLASTIC PRODUCT HAVING COATING FILM AND METHOD AND APPARATUS FOR REGENERATION TREATMENT OF PLASTIC PRODUCT 失效
公开(公告)号：JPH07156149A
公开(公告)日：1995-06-20
申请号：JP31069093
申请日：1993-12-10
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO MICHIAKI , HASHIMOTO NORIAKI , OTANI TAKASHI , YAMAMOTO SHINJI , OSHITANI KOJI , FUKUSHIMA KENJI
IPC分类号： B03B5/28 , B05D3/12 , B05D7/02 , B29B9/00 , B29B17/00 , B29B17/04 , B29K105/26
摘要： PURPOSE:To remove a coating film and regenerate a resin product from which the coating film is removed as pellets by grinding a thermoplastic resin product having a coating film composed of a thermosetting resin and peeling the coating film by compression friction or friction to separate and classify the same. CONSTITUTION:Ground matter 1a of a product 1 is supplied, for example, to a twin-screw extruder 3 whose leading end is opened through a quantitative feeder 2. The ground matter 1a is heated to temp. not exceeding the m.p. of the product 1 in a feed part and abraded by a screw constituted so as to have shearing compression action to grind and peel a painting film. Next, the ground matter is charged in a crusher 4 such as a pin mill to peel the remaining coating film. Subsequently, the ground matter is pref. charged in a water tank 5 to be centrifugally separated under stirring by a hydrocyclone 6. A thermoplastic resin is taken out by a feed pipe 6a and continuously dried by a dryer 8 to be supplied to an extrusion molding machine 10 and melted under heating to be filtered by the metal net of a screen chamber 12 and an extruded strand 13 is cut to form pellets 15.

2. 发明专利

JPH04254710A SURFACE STATE EVALUATION METHOD 失效
公开(公告)号：JPH04254710A
公开(公告)日：1992-09-10
申请号：JP2770091
申请日：1991-01-30
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , KIHARA YUJI
IPC分类号： G01B21/30
摘要： PURPOSE:To achieve a quantitative evaluation and a local evaluation of a surface state of a molded object by using measured surface roughness and glossiness and then evaluating a surface state of a portion to be evaluated. CONSTITUTION:A surface roughness of a plurality of different standard plates for measuring glossiness with a uniform surface state and a known glossiness is measured by using a normal surface roughness meter. Constants K1 and K2 are determined from this surface roughness and glossiness. Then, a surface roughness A of a surface portion where a surface of a molded object is uniform over a certain range and roughness is relatively small and a glossiness B of a portion to be evaluated are measured. Then, when a value F which is expressed by F=(K1-K2Xlog10A)-B is calculated, this value F becomes a quantitative evaluation value of surface state of a portion to be evaluated.

3. 发明专利

JPH0455849B2 失效
公开(公告)号：JPH0455849B2
公开(公告)日：1992-09-04
申请号：JP32950087
申请日：1987-12-28
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , KATO MIKIO
IPC分类号： B29C45/18 , B29C45/50 , B29C45/76

4. 发明专利

JPH03251416A VACUUM MOLD AND ITS MOLDING PROCESS 失效
公开(公告)号：JPH03251416A
公开(公告)日：1991-11-08
申请号：JP4729090
申请日：1990-03-01
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , KIHARA YUJI
IPC分类号： B29C45/00 , B29C33/10 , B29C45/34
摘要： PURPOSE:To obtain the molded object which has high quality and no void, while the evacuated state in mold clamping is perfectly held by achieving the evacuation by way of the through hole formed on a top force. CONSTITUTION:When a bottom force is temporally stopped at the position before the completion of mold clamping, a first transverse sealing part 15 is connected to a first vertical surface 7 of a top force 1. Then, a through hole 9 is positioned inside of the first transverse sealing part 15, and communicates with the cavity 20 formed by each recessed part 6, 10 of each mold 1, 11. The evacuation of the inner part of the cavity 20 is carried out by operating the vacuum pump connected to the through hole 9, and mold clamping is finished by moving the bottom force 11. Since the through hole 9 is positioned between each transverse sealing parts 15 and 16 and is closed, the deaerated state of the cavity 20 and the sprue 2 near vacuum is held, and injection molding is carried out by feeding resin into the cavity from a nozzle 5.

5. 发明专利

JPH032050B2 失效
公开(公告)号：JPH032050B2
公开(公告)日：1991-01-14
申请号：JP10864685
申请日：1985-05-21
申请人： JAPAN STEEL WORKS LTD
发明人： SHIROGANEYA TSUKASA , SAKAI TADAKI , YAMAMOTO SHINJI
IPC分类号： B29C45/23 , B29C45/76

6. 发明专利

JPH02235717A DWELL CONTROLLING METHOD OF INJECTION MOLDER 失效
公开(公告)号：JPH02235717A
公开(公告)日：1990-09-18
申请号：JP5613489
申请日：1989-03-10
申请人： JAPAN STEEL WORKS LTD
发明人： SHIROGANEYA TSUKASA , YAMAMOTO MICHIAKI , YAMAMOTO SHINJI , NINOMIYA SHINICHI
IPC分类号： B29C45/77 , B29C45/50
摘要： PURPOSE:To obviate the dispersion of quality from occurring since the kick-off of molding by a method wherein corrected dwell pressure, which is obtained in the molding of conforming item, is re-corrected during the same shot in proportion to the magnitude of the difference between the mold temperature at every shot and the set temperature at the molding of conforming item so as to control the dwell pressure in order to keep the maximum in-mold pressure constant over the whole shots. CONSTITUTION:The moving time of a moving body and the mold temperature are respectively set in advance in a setter as the set dwell pressure, the set time and the set temperature T0. Through the Time-P control, corrected dwell pressure P0 is obtained. With a temperature sensor T, the mold temperature Tm at the time point of injection start is detected. The mold temperature Tm and the set temperature Ts, which is set in advance, are compared with each other. When the temperature Tm is higher (or lower) than the temperature Ts, a re-corrected dwell pressure P1, which is smaller (or larger) than the corrected dwell pressure P1 by the pressure DELTAPT1, which corresponds to the temperature difference, is a adopted as the dwell pressure in dwell pressure application process PD. Accordingly, the maximum in-mold pressure at every shot can be kept nearly constant regardless of the fluctuation of mold temperature.

7. 发明专利

JPH01171830A MATERIAL FEED CONTROL METHOD FOR INJECTION MACHINE AND ITS DEVICE 失效
公开(公告)号：JPH01171830A
公开(公告)日：1989-07-06
申请号：JP32950087
申请日：1987-12-28
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , KATO MIKIO
IPC分类号： B29C45/18 , B29C45/50 , B29C45/76
摘要： PURPOSE:To maintain a molding material to be fed properly by sensing the actual measuring time in the plasticizing process, judging the difference from the reference measuring time and controlling the material feeding quantity based on the judged result. CONSTITUTION:A molding material fed into a material feeding section 21 is melted and kneaded in a kneading section 22 and transferred to a measuring section 23. A measuring time sensor 3 to sense the measuring time is installed on the driving side of an injection screw 35. The measuring time sensor 3 senses the time required from starting to complete the measuring. The measuring time and the reference measuring time set preliminarily are compared and judged by a judging means 4, from the result of which a control signal is put in from a modifying means 5 into a driving device 32, and a proper quantity of the molding material is fed into the material feeding section 21.

8. 发明专利

JPS61266215A OPERATION CONTROL OF SHUT-OFF VALVE FOR INJECTION MOLDING MACHINE 失效
公开(公告)号：JPS61266215A
公开(公告)日：1986-11-25
申请号：JP10864685
申请日：1985-05-21
申请人： JAPAN STEEL WORKS LTD
发明人： SHIROGANEYA TSUKASA , SAKAI TADAKI , YAMAMOTO SHINJI
IPC分类号： B29C45/23 , B29C45/76
摘要： PURPOSE:To reduce wearing of a nozzle and a needle valve by a method where in the operation of the shut-off nozzle valve is controlled so as to start the injection of molten resin later than the operation of a cylinder for operating a shut-off nozzle. CONSTITUTION:When a switch 10 for injection is put ON, a relay 11 is excited and timer 14, operating before the injection of the shut-off nozzle, is operated simultaneously. At the same time, a solenoid valve 9 is operate to release the restriction of the shut-off nozzle valve 16 and the needle valve 2 thereof moves by the remaining pressure of molten resin, which is generated during plasticating stroke, to a direction of separating from a nozzle port whereby the nozzle port 1 is opened. The (a) timer contact 15 of the timer 14 is set so as to be operated under delaying by 0.5-1.0sec, therefore, the solenoid valve 12 for injection is operated under delaying by the same time delay. The nozzle port 1 is already opened perfectly at that time, therefore, the flow path for passing the molten resin may be secured sufficiently and the wearing near the tip end of the needle valve 2 may be reduced.

9. 发明专利

JPS61258716A ELECTRONIC PARTS INSTALLING DEVICE INTO METAL MOLD IN INJECTION MOLDING AND MOLD THEREOF 失效
公开(公告)号：JPS61258716A
公开(公告)日：1986-11-17
申请号：JP10106285
申请日：1985-05-13
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , SAKAI TADAKI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/02 , B29C45/14 , B29C45/26 , B29K101/10 , B29L31/34 , H01L21/56
摘要： PURPOSE:To make the installation of an electronic part to the metal mold easy and accurate and to get the uniformity of the sealed resin layer, by forming both guide pins piercing through the pinlike terminals of electronic components in series and putting the terminals onto the metal mold and a catching groove fixing an arrangement plate. CONSTITUTION:A pinlike terminal 2 of an electronic part is put into a piercing hole 5 of a flat arrangement plate 4, which is put on a position-fixing plate 7. The leg part 2' of the pinlike terminal 2 is contacted with the step part formed between the surfaces B and C to fix the position of the arrangement plate 4 and to arrange the legs 2'. The arrangement plate 4 is then installed in a catching groove 17 formed in a bottom force 13. The pinlike terminal 2 is put in between guide pins 14, 14 and the lower half is inserted in a spot facing 21. The top force 15 is set on the bottom force 13 and the upper surface of the arrangement plate 4 and the upper half of the pinlike terminal 2 are put into a groove of escape 18 and the spot facing 21 of the top force 15 respectively. Injection molding is then carried out by injecting a molten resin from the injection molding machine and both the electronic part and the arrangement plate 4 sealed with the resin are taken out after cooling for a specified period.

10. 发明专利

JPS6027134A METHOD OF RESIN MOLDING OF ELECTRONIC PARTS 失效
公开(公告)号：JPS6027134A
公开(公告)日：1985-02-12
申请号：JP13540083
申请日：1983-07-25
申请人： JAPAN STEEL WORKS LTD
发明人： YAMAMOTO SHINJI , SAKAI TADAKI , SHIROGANEYA TSUKASA
IPC分类号： B29C45/00 , B29C45/14 , B29K105/20 , B29L31/34 , H01L21/56
摘要： PURPOSE:To prevent the deformation of a metal wire and to improve the strength against bending by making the flow of fused resin parallel to the plane formed of the curved metal wire which is bonded. CONSTITUTION:When the fused resin 5 is injected into a cavity 4 from a gate 6, the resin flows from a back surface of a lead frame 1 toward the upper surface with passing through chinks of the lead frame 1. Then the resin flows as indicated by the arrows (a), (b), (c), (d) and (e) and fills the molding cavity 4. The fused resin 5 which passes by an IC chip 2 and a metal wires 3 bonded to said chip 2 flows from the back surface to the upper surface of the lead frame 1 as indicated by the arrows (c) and (d). Namely, this flow does not go across the plane formed of the bonded curved metal wiring 3, but goes in parallel to said plane, thereby preventing deformation and breakage of the metal wiring 3.

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