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1. 发明专利

JPH03244522A METHOD AND DEVICE FOR CONTROLLING INNER PRESSURE OF MOLD IN INJECTION MOLDING MACHINE 失效
公开(公告)号：JPH03244522A
公开(公告)日：1991-10-31
申请号：JP4117890
申请日：1990-02-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： KANOSE YOSHIO , KASAI MASAYOSHI
IPC分类号： B29C45/20 , B29C45/77
摘要： PURPOSE:To control the resin pressure in the cavity of a mold by actuating a nozzle for heat release of resin when the resin pressure in the cavity of the mold is detected by a detector during an injection packing stage and this pressure exceeds the prescribed preset value and regulating the temp. of resin. CONSTITUTION:An initial needle pin position setter 11c is set by viscosity of resin and initial calorific value. This preset value is regulated to large value as viscosity of resin is made higher. Further this preset value is set at large value as the initial calorific value is made smaller. Thereby the position of a needle pin 21 is decided by a servovalve 29 before injection and injection is started at this position. Injection is started and a resin pressure sensor 39 provided in a cavity detects resin pressure. when the detected resin pressure reaches the preset value or more of a resin pressure lower limit setter 11b, a signal is output to the servovalve 29 from a controller 11. A hydraulic cylinder 25 is actuated and the gap d1 of a nozzle 20 and the needle pin 21 is throttled to control the internal pressure of the cavity. Further when the resin pressure reaches the value of a resin pressure upper limit setter 11a, the needle pin 21 of a nozzle 4 for heat release of resin is completely closed. Accordingly the gap d1 is made to zero and resin pressure is not transferred to the inside of the cavity.

2. 发明专利

JPH03140224A INJECTION MOLDING METHOD AND DEVICE 失效
公开(公告)号：JPH03140224A
公开(公告)日：1991-06-14
申请号：JP27847589
申请日：1989-10-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： KASAI MASAYOSHI , KURODA HIDEO , TAMURA YUKIO , KANOSE YOSHIO , KUBOTA KOJI
IPC分类号： B29C45/20 , B29C45/23 , B29C45/46 , B29C45/56 , B29C45/70 , B29C45/77
摘要： PURPOSE:To greatly reduce the cost of a mold by enabling low mold clamping pressure molding, by a method wherein resin whose viscosity of the molten resin is lowered by generating shearing heat with a sectional area narrowing device for a resin flow path or a temperature raising device for the resin is filled into the mold and the resin is pressed with a movable mold after completion of the filling. CONSTITUTION:A nozzle 20 is screwed into a valve main body 22, a needle pin 21 is fitted slidably into the valve main body 22 and a gap d1 is formed between the tip of the same and the nozzle 20. When resin is passed through this narrow resin passage under a high-shearing speed, viscosity of the molten resin 7 is lowered with shearing heating, the resin becomes low viscosity by becoming a high temperature with a plasticizing temperature raising device. The foregoing molten resin 7 is injected and filled up to a preset position of a screw 1 at a high speed with a signal of a controller 11 into a cavity 36 where a singular or a plurality of wedgy spacers 37 are arranged and a compression allowance delta is contained between a stationary mold 35 and movable mold 32. After completion of the filling, the primary mold clamping pressure is lowered and after movement of the wedgy spacer 37 backward further, the gap d1 of a narrowing nozzle 4 is closed and then the mold cavity 36 is compressed with fixed pressure as the secondary mold clamping pressure.

3. 发明专利

JPH03140223A INJECTION MOLDING METHOD AND DEVICE 失效
公开(公告)号：JPH03140223A
公开(公告)日：1991-06-14
申请号：JP27847489
申请日：1989-10-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： KANOSE YOSHIO , KUBOTA KOJI , KURODA HIDEO , TAMURA YUKIO , KASAI MASAYOSHI
IPC分类号： B29C45/20 , B29C45/23 , B29C45/56 , B29C45/70 , B29C45/77
摘要： PURPOSE:To greatly reduce the cost of a mold by enabling low mold clamping pressure molding, by a method wherein resin whose viscosity is lowered by generating shearing heat of the molten resin by narrowing an injection nozzle is filled into the mold and the resin is pressed with a movable mold after completion of the filling. CONSTITUTION:A nozzle 20 is screwed into a valve main body 22, a needle pin 21 is fitted slidably into the valve main body 22 and a gap d1 is formed between the tip of the same and the nozzle 20. When resin is passed through this narrow resin passage under a high-shearing speed, viscosity of the molten resin 7 is lowered with shearing heating. The foregoing molten resin 7 is injected and filled into a cavity 36 formed by fitting of a movable mold 32 and stationary mold 35 into each other up to a set position of a screw 1 with a signal of a controller 11. After completion of the filling, the primary mold clamping pressure is lowered and after movement of a wedgy spacer 37 backward further, the gap d1 of a narrowing nozzle 4 is closed and then the mold cavity 36 is compressed with fixed pressure as the secondary mold clamping pressure.

4. 发明专利

JPS6099627A HIGHLY KNEADING SCREW 失效
公开(公告)号：JPS6099627A
公开(公告)日：1985-06-03
申请号：JP20711383
申请日：1983-11-04
申请人： MITSUBISHI HEAVY IND LTD
发明人： KASAI MASAYOSHI , MOURI RIYOUJI , KUDOU KESANOBU
IPC分类号： B29C48/67 , B29C45/52 , B29C45/60
摘要： PURPOSE:To obtain a highly kneading screw exceedingly improved in kneading properties and reduced in resin temperature difference in the stroke direction by providing a mixing part composed of a melting and a shearing section with special shape at the end of the screw. CONSTITUTION:The mixing part (b) and the flow-back preventive mechanism (c) are provided at the end of the metering part (a) of the screw 1. The mixing part (b) is made up of a polyhedron of which the section is polygonal, the flow-back preventive mechanism c is composed of the seat 4, the check ring 5, the retainer seat 6 and the ring 7. The inner wall surface 13 of a cylinder and the notched slopes 14, 15 of the polyhedron 2 make up voids having curved line of small curvature. The notch slope 14 makes up the melting section 16 and the notch slope 15 due to the curved line of large curvature makes up the shearing section 17. The melting section 16 is connected in a constant depth with metering part and the flow-back preventive mechanism (b) while the shearing section 17 is opened for the side of the metering part (a) but closed by the weir 18 for the side of the flow-back preventive part.

5. 发明专利

JPS5967028A Highly kneading screw 失效
标题翻译：高科技螺丝
公开(公告)号：JPS5967028A
公开(公告)日：1984-04-16
申请号：JP17820482
申请日：1982-10-09
申请人： Mitsubishi Heavy Ind Ltd
发明人： KASAI MASAYOSHI , ITOU RIYOUZOU
IPC分类号： B29C45/00 , B01F7/08 , B29B7/00 , B29C37/00 , B29C45/52 , B29C45/60 , B29C47/00 , B29C47/44 , B29C47/64
CPC分类号： B29C45/60 , B29C47/6018 , B29C47/64
摘要： PURPOSE:To trap an unmelted resin and exert a strong shearing force to thereby provide an effective kneading action and an effective cleaning action at the time of plasticizing and back-up an injecting pressure by a restriction at the tip of a mixing part to thereby suppress a backflow of the resin at the time of injecting, by a method wherein a mixing part having a cross section constituted of a polyhedron is provided at the tip of a screw, and a weir a part of which is cut out is provided at the tip of the mixing part. CONSTITUTION:The length L of the mixing part 2 provided at the tip of a metering part (a) is set to be 1-3D (where D is the diameter of the screw), the cross section A-A thereof is a polyhedron constituted of curved surfaces 3 [for example, R=3h-10h, where h is the depth of the groove provided at the metering part (a)] or plane surfaces 3', and is slightly distorted relatively to the axial direction of the screw. The weir 4 is provided at a section l=0.2L-0.5L of a tip part of the mixing part 2, and is provided with restricted grooves 5 having a depth h'=H/2-H/5 (where H is the maximum depth of the polyhedron from the outside diameter of the screw) and a width w=W/2-W/5. Even when molding a vinyl chloride resin or the like, a wide range of molding conditions can be obtained, and a molding cycle can be accelerated.
摘要翻译：目的：捕获未熔化的树脂并发挥强烈的剪切力，从而通过限制在混合部件的顶端的塑化和备用注射压力提供有效的捏合作用和有效的清洁作用，从而抑制通过在螺杆的前端设置具有由多面体构成的截面的混合部件的方法，在注射时树脂的回流，其一部分被切出的堰被设置在尖端的混合部分。构成：设置在计量部（a）的前端的混合部2的长度L被设定为1-3D（D是螺杆的直径），其横截面AA是由弯曲表面3 [例如，R = 3h-10h，其中h是设置在计量部分（a）处的凹槽的深度）或平面3'，并且相对于螺杆的轴向方向稍微变形。堰4设置在混合部分2的顶端部分的部分l = 0.2L-0.5L处，并且设置有深度为h'= H / 2-H / 5的限制槽5（其中H为多边形从螺钉的外径的最大深度）和宽度w = W / 2-W / 5。即使在成型氯乙烯树脂等时，也可以获得宽范围的成型条件，并且可以加速成型周期。

6. 发明专利

JPS5725931A Plasticizing screw 失效
标题翻译：塑胶螺丝
公开(公告)号：JPS5725931A
公开(公告)日：1982-02-10
申请号：JP10160880
申请日：1980-07-24
申请人： Mitsubishi Heavy Ind Ltd
发明人： ITOU RIYOUZOU , KASAI MASAYOSHI
IPC分类号： B29C45/00 , B29B7/00 , B29C37/00 , B29C45/60 , B29C47/00 , B29C47/38 , B29C47/64
CPC分类号： B29C47/6043 , B29C47/0009
摘要： PURPOSE:To obtain a plasiticizing screw which gives large shearing strength to molten resin and a uniformly kneading operation by a method wherein a plunger part having a special shape is provided at the end part of a screw. CONSTITUTION:A plunger 7 is provided at the end part of a screw body 6. A plurality (eight in the figure) of slopes 8 (8a-8b) on the upstream side where the gap between the plunger 7 and a cylinder 9 decreases gradually from the upstream side to the downstream side and a plurality (eight in the figure) of slopes 10 (10a-10b) on the downstream side where it increases gradually from the upstream side to the downstream side are arranged alternately on the external circumferential surface. The boundaries between both slopes 8, 10 make straight ridges, the sections at right angles to the axis of the plunger 7 from the upstream side toward the downstream side are of octagon of hexadecagon of octagon and the passage area between a cylinder 9 and the plunger 7 is near constant.
摘要翻译：目的：获得在熔融树脂上具有大的剪切强度的均质混合螺杆，通过在螺杆的端部设有具有特殊形状的柱塞部件的方法进行均匀的捏合操作。构成：柱塞7设置在螺杆体6的端部。在柱塞7和气缸9之间的间隙逐渐减小的上游侧的多个（图中为八个）斜面8（8a-8b）从上游侧到下游侧，并且在其从上游侧向下游侧逐渐增大的下游侧的斜面10（10a-10b）中的多个（图8中的8个）交替设置在外周面上。两个斜面8,10之间的边界形成直的脊，从上游侧到下游侧与柱塞7的轴线成直角的部分是八边形的八边形的八边形，以及气缸9和柱塞之间的通道面积 7接近恒定。

7. 发明专利

JPS5214659A INJECTION MOLDING MACHINE 失效
公开(公告)号：JPS5214659A
公开(公告)日：1977-02-03
申请号：JP9011775
申请日：1975-07-25
申请人： MITSUBISHI HEAVY IND LTD
发明人： KASAI MASAYOSHI
IPC分类号： B29C37/00 , B29C45/00 , B29C45/52 , B29C45/60

8. 发明专利

JPH0418890B2 失效
公开(公告)号：JPH0418890B2
公开(公告)日：1992-03-30
申请号：JP9102682
申请日：1982-05-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： KASAI MASAYOSHI , SHIMODAIRA KATSUYOSHI , MORI RYOJI , KUDO KESANOBU
IPC分类号： B29B9/00 , B01F7/08 , B29B7/00 , B29B7/42 , B29B7/58 , B29B7/80 , B29C45/47

9. 发明专利

JPH03106625A MOLD MECHANISM FOR MOLDING MACHINE 失效
公开(公告)号：JPH03106625A
公开(公告)日：1991-05-07
申请号：JP24393289
申请日：1989-09-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： KURODA HIDEO , KASAI MASAYOSHI , KANOSE YOSHIO
IPC分类号： B29C45/26 , B29C45/56
摘要： PURPOSE:To prevent resin from leaking from a cavity to a parting face at the time of compression by providing a sealing component along the periphery of the cavity and in contact with the parting face of either of a couple of molds forming the cavity onto the parting face of another mold. CONSTITUTION:Molten resin is injection filled from an injection port 1b into a mold cavity in the state of opening slightly parting faces 1a and 2a of molds 1 and 2, and resin 3 in said cavity is compressed and molded by both molds 1 and 2. At that time, an elastic seal 4 is inserted into a channel 15 provided at the parting face 2a, and when a solenoid S is excited, a switching valve 11 is actuated to flow the fluid from a fluid pressure source 12 to a port 14, and fluid pressure is applied to a rear surface 4b of the elastic seal 4 after the fluid runs through a connecting port 10 and a fluid opening 9 and a channel bottom 8. Thus, a sealing surface 4a is pressed to the parting face 1a to prevent the resin 3 from leaking onto the parting face.

10. 发明专利

JPS637128B2 失效
公开(公告)号：JPS637128B2
公开(公告)日：1988-02-15
申请号：JP4056982
申请日：1982-03-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： KASAI MASAYOSHI , SHIMODAIRA KATSUYOSHI , MORI RYOJI , KUDO KESANOBU
IPC分类号： B29C45/00 , B29C37/00 , B29C45/17 , B29C45/20

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