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1. 发明专利

DE3036441A1 未知
公开(公告)号：DE3036441A1
公开(公告)日：1981-04-16
申请号：DE3036441
申请日：1980-09-26
申请人： HITACHI LTD
发明人： TSUZUKU SUSUMU , KANEDA AIZO , SAEKI JUNICHI , AOKI MASAYOSHI
IPC分类号： H01L21/56 , B29C43/00 , B29C45/00 , B29C45/02 , B29C45/26 , B29C45/76 , B29C45/77 , B29F1/06
摘要： A transfer molding machine for filling at least one cavity of a mold with a resin by means of a plunger including a resin pressure sensor for sensing the resin pressure in the mold, and a control device for controlling the pressure applied to the plunger to drive same in such a manner that an arbitrarily selected primary pressure higher than a holding pressure is applied to the plunger to drive same until the pressure of the resin charged into the mold which pressure is detected by the resin pressure sensor in the mold reaches a predetermined pressure level and a secondary pressure corresponding to the holding pressure is applied to the plunger to drive same after the predetermined pressure level has been exceeded by the pressure of the resin being charged into the mold sensed by the resin pressure sensor in the mold, and a warning device that issues a warning when the pressure applied to the plunger to drive has exceeded a predetermined pressure.

2. 发明专利

JPS6259660B2 失效
公开(公告)号：JPS6259660B2
公开(公告)日：1987-12-11
申请号：JP2513079
申请日：1979-03-06
申请人： HITACHI LTD
发明人： NAKAMURA SHOZO , AOKI MASAYOSHI
IPC分类号： B29C33/00 , B29C61/00 , B29C70/68 , B29L31/24

3. 发明专利

JPS5843258B2 失效
公开(公告)号：JPS5843258B2
公开(公告)日：1983-09-26
申请号：JP5447175
申请日：1975-05-09
申请人： HITACHI LTD
发明人： AOKI MASAYOSHI
IPC分类号： B29C45/00 , B29B13/00 , B29C33/00 , B29C41/00 , B29C45/27 , B29C45/40

4. 发明专利

JPS5839043B2 失效
公开(公告)号：JPS5839043B2
公开(公告)日：1983-08-27
申请号：JP11825974
申请日：1974-10-16
申请人： HITACHI LTD
发明人： AOKI MASAYOSHI
IPC分类号： B29B13/00 , B29C33/00 , B29C33/10 , B29C33/38 , B29C33/42 , B29C33/44

5. 发明专利

JPS5831293B2 失效
公开(公告)号：JPS5831293B2
公开(公告)日：1983-07-05
申请号：JP2937979
申请日：1979-03-15
申请人： HITACHI LTD
发明人： KANEDA AIZO , TSUNODA SHIGEHARU , OOTSUKI KEIZO , NAKAGAWA TAKASHI , AOKI MASAYOSHI
IPC分类号： B29C33/00 , B29B7/00 , B29B13/00 , B29C33/40 , B29C39/00 , B29C43/00 , B29C45/00 , B29C45/02 , B29C45/14 , B29C45/26 , B29C45/37 , H01L21/56

6. 发明专利

JPS5775840A Injection molding method causing liquid reaction 失效
标题翻译：注射成型方法引起液体反应
公开(公告)号：JPS5775840A
公开(公告)日：1982-05-12
申请号：JP15209080
申请日：1980-10-31
申请人： Hitachi Ltd
发明人： HIYOSHI YASUO , ISOGAI TOKIO , KANEDA AIZOU , YOKONO ATARU , GOTOU MASAO , AOKI MASAYOSHI , TSUZUKI SUSUMU , KOUYA KENICHI , IIDA MAKOTO , NAKAMURA SHIYOUZOU
IPC分类号： B29C45/57 , B29B7/76 , B29C43/00 , B29C44/42 , B29C45/00 , B29C67/24 , B29K105/14
CPC分类号： B29B7/7621 , B29B7/7663 , B29C44/42 , B29C67/246
摘要： PURPOSE:To reliably and inexpensively mold foamed product with no defects in its external appearance and internal structure by a method wherein plural kinds of liquids raw waterials are poured into a mold cavity and then gas is introduced under pressure to expand and curefy, in an injection molding method causing a liquid reaction. CONSTITUTION:A mixing head 8 provided with a gas supply port 16 and a gas exhaust port 17 is employed. With a piston 15 located on the right side, liquid raw materials A, B flow into the head through right pipes, pass through passages formed in the piston 15 and then discharged therefrom through left pipes, thus circulated separately. When working oil 12 is sucked to move the piston 15 leftward, the liquid raw materials A, B are mixed with each other. Subsequest movement of the piston 15 in the rightward direction causes a predetermined amount of the mixed liquid raw material to be fed into a mold cavity. Thereafter, a valve for the gas supply port 16 is opened to introduce gas 18 into the cavity, so that the mixed liquid raw materials are formed and solidified while filling up the cavity. Then, a valve for the gas exhaust port 17 is opened to discharge the excess of the gas 18, so that solidification is completed and foamed products are obtained.
摘要翻译：目的：通过将多种液体原料倒入模腔中，然后在压力下引入气体进行膨胀和固化的方法，以可注射和低成本地模制发泡产品的外观和内部结构的缺陷，造成液体反应的成型方法。构成：采用设有气体供给口16和排气口17的混合头8。当活塞15位于右侧时，液体原料A，B通过右管道流入头部，穿过形成在活塞15中的通道，然后通过左管排出，从而分开循环。当工作油12被吸入以使活塞15向左移动时，液体原料A，B彼此混合。活塞15沿向右的顺序运动使预定量的混合液体原料进料到模腔中。此后，打开用于气体供给口16的阀，将气体18引入空腔，从而在填充空腔的同时形成并固化混合液体原料。然后，打开用于排气口17的阀，以排出多余的气体18，使得固化完成并获得发泡产品。

7. 发明专利

JPS56109742A APPARATUS FOR AND METHOD OF MEASURING HARDNESS OF THERMOSETTING RESIN MATERIAL FOR MOLDING 失效
公开(公告)号：JPS56109742A
公开(公告)日：1981-08-31
申请号：JP1149680
申请日：1980-02-04
申请人： HITACHI LTD
发明人： TSUZUKI SUSUMU , AOKI MASAYOSHI , KANEDA AIZOU , SAEKI JIYUNICHI
IPC分类号： B29C45/02 , B29C43/00 , B29C45/00 , B29C45/14 , B29C45/26 , B29C45/76 , B29L31/34
摘要： PURPOSE:To evaluate the hardness of a resin in a die gate accurately by determining whether a pressure transmits to a cavity through the resin after it is retained in the gate for fixed time. CONSTITUTION:An upper die 5 and a lower die 6 are closed to throw a resin into an opening 7. Then, as a hydraulic device 3 is driven to lower a plunger 4, the resin is forced into a cavity 10 through a gate 9. When the resin pressure in the cavity reaches P1, the action of the hydraulic device stops, where the resin pressure becomes zero. After the time elapses by Xt, the hydraulic device 3 restarts to lower the plunger to increase the resin until it shows the highest value P2 by a pressure indication comparator 14. As the time Xt is prolonged, the resin in the gate 9 comes to be hardened where the resin pressure fails to rise again. The value Xt is varied by stages and the value P2 is read out at each time. Even if the time Xt is further extended, the value P2 can remain high. In this case, it should be determined that the resin is hard to be hardened in the gate 9, that is, poor appearance is hard to take place in the molded product.

8. 发明专利

JPS55118830A REINFORCING METHOD FOR PLASTIC MOLDED PRODUCT 失效
公开(公告)号：JPS55118830A
公开(公告)日：1980-09-12
申请号：JP2513079
申请日：1979-03-06
申请人： HITACHI LTD
发明人： NAKAMURA SHIYOUZOU , AOKI MASAYOSHI
IPC分类号： B29C33/00 , B29C61/00 , B29C70/68 , B29L31/24
摘要： PURPOSE:To simply reinforce a self-tapping portion of a plastic molded product, by a method wherein a metal sheet is previously insert-molded into a self-tapping portion of a plastic molded product. CONSTITUTION:A lower hole having a diameter dp inserted into a tapping screw is previously made in a boss 1, having an outer diameter D, of a plastic molded product 5, and a metal sheet 4, wherein a hole having a diameter equal to the diameter dp of the lower hole is bored, is inserted into the lower hole. A proper diameter dp of the lower hole may be 0.7-0.9 fold as large as an outer diameter d of the tapping screw, and it is desirable that the thickness t of the metal sheet is about 0.5-1.0 fold as thick as a pitch tp of the tapping screw. Furthermore, it is advisable that the metal sheet 4 has a side whose length A is 0.5-0.6 fold as long as the outer diameter D of the boss.

9. 发明专利

JPS5542807A TRANSFER MOLDING APPARATUS 失效
公开(公告)号：JPS5542807A
公开(公告)日：1980-03-26
申请号：JP11578478
申请日：1978-09-22
申请人： HITACHI LTD
发明人： TSUZUKI SUSUMU , KANEDA AIZOU , SAEKI JIYUNICHI , AOKI MASAYOSHI
IPC分类号： B29C43/00 , B29C45/00 , B29C45/02 , B29C45/46 , B29C45/74 , B29C45/78
摘要： PURPOSE:To obtain the title apparatus capable of producing molded product of uniform quality regardless of the displacement of resin by measuring the pressure applied on resin and the displacement of plunger and automatically controlling the temperature for preheating based upon the measured data. CONSTITUTION:Desired moled product is obtained by transferring preheated resin- tablet 15 to mold cavity portion 17 by plunger 6. During this procedure, resin pressure is measured by pressure sensor 7, the outputted signal is amplified at the amplifier 11 while the displacement of plunger is measured by the strain gauge 8, the outputted signal is differentiated at the differentiator 9. Then, the quotient P/V, wherein P is resin pressure and V is plunger speed, is calculated at the quotient calculator 10. P/V is compared with the value preset at the comparing and memory circuit 12. Based upon the compared value, heating temp. of the resin- tablet 15 at the preheater 13 is controlled.

10. 发明专利

JPS54102358A DEVICE FOR MEASURING RESIN FLUIDITY IN TRANSFER MOLDING MACHINE 失效
公开(公告)号：JPS54102358A
公开(公告)日：1979-08-11
申请号：JP825378
申请日：1978-01-30
申请人： HITACHI LTD
发明人： TSUZUKI SUSUMU , KANEDA AIZOU , SAEKI JIYUNICHI , AOKI MASAYOSHI
IPC分类号： H01L21/56 , B29C43/00 , B29C45/00 , B29C45/02 , B29C45/26 , B29C45/76
摘要： PURPOSE:To improve the yield and quality of molded articles, by measuring and controlling the fluidity of resin flowing into a mold, by providing a plunger of a transfer molding machine with a displacement gauge and a pressure gauge, and differentiating the output signal of the displacement gauge with time. CONSTITUTION:The lower end of a plunger 1 of a transfer molding machine is furnished with a pressure sensor 6 to measure the pressure p' of resin, and the upper part of the plunger 1 is furnished with a displacement gauge 7 to measure the displacement of the plunger 1. A plunger pressure p and a displacement velocity v (dz/dt) are calculated from those signals by an operational amplifier 8. The molding conditions are controlled according to the fluidity of resin (v/p) calculated from the above data.

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