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11. 发明专利

JP2002137255A MOLD FOR INTRAMOLD COATING AND INTRAMOLD COATING METHOD 失效
公开(公告)号：JP2002137255A
公开(公告)日：2002-05-14
申请号：JP2000334528
申请日：2000-11-01
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B05D7/22 , B29C45/16 , B29C45/26 , B29C45/56
摘要： PROBLEM TO BE SOLVED: To efficiently manufacture moldings with a coating material adhering to the surface, side and back of thermoplastic resin moldings, which undergo the step to inject the coating material under low pressure into a gap formed by an operation for opening the mold slightly. SOLUTION: The mold for intramold coating to be used is equipped with a subcavity which constitutes a part of the back of a main cavity 2 on the entire external circumference of the main cavity 2 and a movable insert 40 which moves back and forth in the subcavity inside the outer circumferential part, on the opposite coating face side, of the subcavity. In addition, a resin insert 50 with an inverted trapezoidal protrusion 51 is arranged in the main cavity 2 in such a state that the mold is opened and the mold is clamped, accompanied by an operation to fill the main cavity 2 with a molten resin 25 by injection. After that, a coating agent 60 is injected into the gap 24 formed by opening the mold slightly in such a state that the movable insert 40 is urged and the mold is again clamped. Further, the coating agent is cured inside the mold in such a way that the former is bonded monolithically on the surface of the thermoplastic resin moldings.

12. 发明专利

JP2002127199A DIE FOR IN-MOLD COATING, AND IN-MOLD COATING METHOD 失效
公开(公告)号：JP2002127199A
公开(公告)日：2002-05-08
申请号：JP2000328118
申请日：2000-10-27
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B05D1/26 , B05C5/00 , B05C11/10 , B29C45/16 , B29C45/26 , B29C45/56
摘要： PROBLEM TO BE SOLVED: To provide a die for in-mold coating and an in-mold coating method by which a molded article, wherein a paint is closely attached on the surface, the end surface and the rear surface in the vicinity of the end surface of a thermoplastic resin molded article, can be efficiently manufactured by a minute die-opening motion of the die. SOLUTION: After molding the thermoplastic resin molded article in the die, the die is opened by a specified gap, and a specified coating agent is injected in the space between the surface of the obtained thermoplastic resin molded article and the cavity surface of the die by a coating agent injecting machine. After the injection of the coating agent is completed, the die is clamped again, and the coating agent is hardened in the die. Thus, the molded article, wherein the coating agent is closely attached and integrated on the surface of the thermoplastic resin molded article, is manufactured by this die for in-mold coating. In such a die for in-mold coating, a movable core 1, a movable core 2 and a gate are provided. In this case, the movable core 1 communicates/shuts off a main cavity and a subsidiary cavity which extends to the total outer periphery of the main cavity, and at the same time, constitutes one section of the main cavity. The movable core 2 advances in/retracts from the subsidiary cavity on the internal side of the outer peripheral section on the side being opposite from the coated surface of the subsidiary cavity. The gate can control a valve which feeds a molten resin in the subsidiary cavity.

13. 发明专利

JP2001334555A MOLD FOR LAMINATION MOLDING AND METHOD FOR LAMINATION MOLDING 失效
公开(公告)号：JP2001334555A
公开(公告)日：2001-12-04
申请号：JP2000157626
申请日：2000-05-29
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B29C45/26 , B29C33/18 , B29C45/14
摘要： PROBLEM TO BE SOLVED: To provide a mold for lamination molding and a method for lamination molding capable of easily arranging a skin material and not leaving a mark of a suction hole on a surface of the skin material in a mold for laminating the skin material on a surface of a core material resin by arranging the skin material in one mold and laminating a core material molten resin on a rear surface of the skin material. SOLUTION: In a first embodiment, the mold for laminating the skin material on a front surface of the skin material by arranging the skin material in one mold and laminating a core material molten resin on a rear surface of the skin material comprises the suction hole for sucking the skin material at a split surface or a bitten part of the mold of the side for arranging the skin material out of a mold cavity. In a second embodiment, the method for lamination molding comprises the steps of arranging the skin material in the mold having the suction hole for sucking the skin material to the split surface of the bitten part of the mold out of the mold cavity, sucking the skin material, closely contacting the skin material and holding the material with the mold, then closing the mold and injection molding or injection press molding the skin material.

14. 发明专利

JP2001138334A MOLD AND METHOD FOR MOLDING COAT IN MOLD 失效
公开(公告)号：JP2001138334A
公开(公告)日：2001-05-22
申请号：JP32683999
申请日：1999-11-17
申请人： UBE INDUSTRIES , DAINIPPON TORYO KK
发明人： ARAI TOSHIO , OKAHARA ETSUO , KOBAYASHI KAZUAKI , YONEMOCHI KENJI , OTA KENJI
IPC分类号： B29C33/14 , B29C45/16
摘要： PROBLEM TO BE SOLVED: To provide a mold for molding a coat in the mold which is used for producing an integrated resin molding with a coating film adhered to the surface by injecting coating between the surface of a resin molding molded in the mold and the cavity surface of the mold and curing the coating in the mold. SOLUTION: The mold 10 has an injector 16 for injecting the coating into the cavity 14 of the mold 10 to form a surface coat in the mold 10 on the surface of the resin molding molded in the mold 10. An auxiliary cavity 17 extending in the opening/closing direction of the mold 10 is formed over the entire circumference of the cavity 14 to communicate with the cavity 14.

15. 发明专利

JP2001038737A IN-MOLD COATING METHOD 失效
公开(公告)号：JP2001038737A
公开(公告)日：2001-02-13
申请号：JP21383199
申请日：1999-07-28
申请人： UBE INDUSTRIES , DAINIPPON TORYO KK
发明人： ARAI TOSHIO , OKAHARA ETSUO , KOBAYASHI KAZUAKI , YONEMOCHI KENJI , YAMAMOTO YOSHIAKI , OTA KENJI
IPC分类号： B05D7/24 , B29C33/14 , B29C45/14 , B29C45/16 , B29C45/56 , B29C45/70 , B29C45/77
摘要： PROBLEM TO BE SOLVED: To provide an in-mold coating method excellent in productivity, in which integrated moldings having a paint film stuck on the surface are produced with high precision by injecting coating between the surface of the resin moldings formed in the inside of the mold and the surface of a cavity of the mold and thereafter curing the coating in the inside of the mold. SOLUTION: Integrated moldings having a paint film stuck on the surface of the resin moldings are produced by injecting coating between the surface of the resin moldings formed in the insides of molds 51.52 and the surface of a cavity of the mold and thereafter curing the coating in the insides of the molds 51.52. After the resin moldings are formed, the molds 51.52 are opened in about prescribed interval and coating of prescribed amount is injected into the cavity 53 of the mold by an injector 55 of coating. Thereafter, the molds 51.52 are closed and while controlling the pressure of coating in the inside of the mold at 50-150 kgf/cm2 in the whole part of the resin moldings, the coating is made to flow on all surfaces of the resin moldings and allowed to adhere. Thereafter, the pressure of coating in the inside of the mold is controlled at 5-20 kgf/cm2 in the whole part of the resin moldings.

16. 发明专利

JPH1134100A LAMINATE MOLDING METHOD 失效
公开(公告)号：JPH1134100A
公开(公告)日：1999-02-09
申请号：JP19388997
申请日：1997-07-18
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B29C45/14 , B29C45/56 , B29C45/76 , B29L9/00
摘要： PROBLEM TO BE SOLVED: To prevent the generation of unevenness or an air mark and to enhance surface glossiness by releasing mold clamping force at a point of time reaching preset temp. when the temp. of a resin sheet during injection molding falls after reaches the highest temp. to hold the same only for a predetermined time. SOLUTION: The injection filling of a molten resin R is started to apply advance force to the injection screw 34 of an injection apparatus 30 to inject the molten resin in the amt. corresponding to the vol. of a mold cavity 5. During this period, the temp. of a resin sheet S is continuously measured and, at a point of time when the temp. of the sheet falls to preset temp. during temp. falling after reaching the highest temp., mold clamping force is released to start mold opening to form an air layer between the resin sheet S and the surface of the mold cavity 5 as a heat insulating layer. During this mold opening operation, the measurement of mold opening quantity is continued and, when it reaches preset mold opening quantity, a timer 66 is started to hold the mold opening quantity for the definite time set by the timer 66. After a definite time is elapsed, the mold is opened to take out a product.

17. 发明专利

JPH10337757A METHOD FOR INJECTION MOLDING 失效
公开(公告)号：JPH10337757A
公开(公告)日：1998-12-22
申请号：JP15200097
申请日：1997-06-10
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B29C45/26 , B29C45/57 , B29C45/63
摘要： PROBLEM TO BE SOLVED: To supplement a volume reduction of resin in the case of cooling melted resin by lowering resin pressure in a mold cavity, cooling to solidify the melted resin near a mold splitting surface of the mold to form a skin layer on a surface, and then again loading a forwarding force to an injection screw. SOLUTION: In the dwelling step, a set time for giving a forwarding force to a screw 34 is set by a timer, then the force of the screw 34 is removed, a mold clamping force is released, and the a cooling step is started while retaining in the mold closing state. In the dwelling step, melted resin charged in a mold cavity 5 is proceeded in cooling as a time is elapsed, a skin layer is formed on a contact surface with the mold, and simultaneously volume reduction occurs in the case of cooling to solidify it. A skin layer of sufficient thickness is formed at resin in contact with a gap provided at parting surfaces, and a forwarding force is again loaded to the screw 34. The resin compressed by the force of the screw 34 flows into the cavity 5 to compensate for the volume reduction due to the cooling of the resin.

18. 发明专利

JPH10315265A INTEGRALLY SKIN LAMINATION MOLDING METHOD 失效
公开(公告)号：JPH10315265A
公开(公告)日：1998-12-02
申请号：JP12960997
申请日：1997-05-20
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B29C45/26 , B29C45/14 , B29C69/02 , B29L9/00
摘要： PROBLEM TO BE SOLVED: To simultaneously realize the molding of a skin sheet and a molten resin and their lamination by a method wherein a fitst stage injection action is completed before the arrival of the temperature of the skin sheet to its deformable temperature by the fluid pressure of the molten resin and, after the temperature of the skin sheet has risen to its shapeable temperature through its contact with the molten resin, a second stage injection action and a dwell action are executed. SOLUTION: Under the condition that a mold clamping state is held by applying a mold clamping pressure after the completion of a mold clamping, a first stage injection is started so as to charge a core material in the cavity 5 of a mold through injection. The injection fill of the core material at this time is the volume of the molten resin, which fills the volume surrounded by the skin sheet (s) and the mold 3, for injection. The potential heat of the core material filling the cavity 5 of the mold is transmitted to the skin sheet (s). After the temperature of the skin sheet has risen to its shapable temperature through its contact with the molten resin, a second stage injection and filling is performed, resulting in contriving to completely shape the sin sheet (s) and the core material and turn them into an integral body.

19. 发明专利

JPH0976314A CONTROL METHOD FOR CLAMPING PRESSURE IN INJECTION COMPRESSION MOLDING 失效
公开(公告)号：JPH0976314A
公开(公告)日：1997-03-25
申请号：JP24020795
申请日：1995-09-19
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B29C45/64 , B29C45/76
摘要： PROBLEM TO BE SOLVED: To minimize control of clamping pressure by a method wherein a first clamping pressure at a first cycle is made a second clamping pressure, and a second clamping pressure is increased/decreased after a second cycle based on a closing time up to an inflection point where a rate of change of speed of travel of a movable mold becomes constant so as to control a clamping speed. SOLUTION: At a first cycle after a molding is started, a clamping pressure detected at that point of time at a clamping pressure control section 23 by a clamping pressure detecting section 24 is added to a clamping cylinder 6 of a movable mold 2 at a second pressure by a hydraulic control valve 8 as it is. At a next molding cycle, a rate of change of the speed of travel is obtained at a computation processing device 26 from the movement of the movable mold 2 detected by a mold position detecting section 18. When a closing time from a point of time that injection is completed until an inflection point where the rate of change becomes constant is longer than the largest set value, the clamping pressure at the next molding cycle is increased by a fixed rate and stored newly in a memory unit 27. When the closing time is shorter than the smallest set value, the clamping pressure is reduced.

20. 发明专利

JPH0957807A CONTROLLING METHOD FOR MOLD CLAMPING PRESSURE OF INJECTION COMPRESSION MOLDING 失效
公开(公告)号：JPH0957807A
公开(公告)日：1997-03-04
申请号：JP21047995
申请日：1995-08-18
申请人： UBE INDUSTRIES
发明人： OKAHARA ETSUO
IPC分类号： B29C45/67 , B29C45/56 , B29C45/70 , B29C45/76
摘要： PROBLEM TO BE SOLVED: To control the necessary minimum mold clamping pressure by controlling the mold clamping pressure corresponding to the mold opening amount during injection charging and controlling the mold clamping pressure corresponding to the flowing time of resin in a cavity after the injection is completed. SOLUTION: The method for controlling the mold clamping pressure of injection compression molding comprises the steps of bringing a movable mold into contact with a stationary mold, then injection charging melted resin in the cavity, so feedback controlling the first mold clamping pressure that the mold opening amount does not exceed a predetermined value until the injection is completed, and switching to the second mold clamping pressure obtained by multiplying the first mold clamping pressure at the time of completion of the injection by a change rate after the completion of the injection to increase or decrease the mold clamping pressure of next molding cycle according to the mold closing time up to a point of contraflexure that the moving speed change rate of the movable mold becomes constant from the completion of the injection charging.

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