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公开(公告)号：US5451363A
公开(公告)日：1995-09-19
申请号：US287836
申请日：1994-08-09
CPC分类号： B29C45/561 , B29C2045/563
摘要： An improved injection molding method comprising, tightening an injection molding die with a die tightening force lower than that corresponding to a conventionally rated pressure, injecting a molten resin in a die cavity with an injection molding pressure of which intensity is determined corresponding to the die tightening force so that a gap is formed so as to permit only gas to flow outside of the die cavity via the gap, after completion of injecting temporarily interrupting injection molding so as to release a part of the injection molding pressure from the die cavity so as to maintain the reduced injection molding pressure in the die cavity in the uniformalized state, and raising the die tightening force up to a level corresponding to the rated pressure, and moreover, raising the injection molding pressure in the die cavity. Since a molten resin is injected in the die cavity with a low intensity of injection molding pressure with a low corresponding die tightening force, and moreover, the injection molding pressure is held in the die cavity in the uniformalized state before it is retained in the die cavity, a molded article having a small thickness and a large projected area can easily be produced without any occurrence of a malfunction such as warpage or the like.
摘要翻译： 一种改进的注射成型方法，包括：以比常规额定压力低的模具紧固力将紧固力紧固在注射成型模具上，将熔融树脂注射到模腔中，注射成型压力的强度对应于模具紧固 使得形成间隙，使得仅允许气体经由间隙流动到模腔外部，在完成注入之后暂时中断注射成型以便从模腔中释放一部分注射成型压力，从而 在均匀化状态下保持模腔中的注塑压力降低，并将模具紧固力提高到与额定压力相对应的水平，此外，提高模腔中的注塑压力。 由于熔融树脂以较低的相应的模具紧固力以较低的注射成型压力注入模腔中，此外，注射成型压力在保持在模具中之前以均匀化状态保持在模腔中 空腔，可以容易地制造具有小厚度和大的投影面积的模制品，而不会发生诸如翘曲等故障。
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公开(公告)号：US07244379B2
公开(公告)日：2007-07-17
申请号：US11017744
申请日：2004-12-22
申请人： Takashi Hakoda , Masahiko Miyajima
发明人： Takashi Hakoda , Masahiko Miyajima
CPC分类号： B29C45/661 , B29C45/844
摘要： In a mold protection method for a mold clamping apparatus, a predetermined mold protection zone is set in a zone in which a mold is closed, and an anomaly such as presence of a foreign object is detected on the basis of a change in a physical quantity in the mold protection zone so as to protect the mold. The method includes the steps of previously setting, as a reference position, a closed position of a movable platen at which a target mold clamping force is obtained; setting an end position of the mold protection zone with respect to the reference position; obtaining, during a production operation, an actual closed position (detected position) of the movable platen; and correcting the end position of the mold protection zone on the basis of a deviation between the detected position and the reference position.
摘要翻译： 在用于模具夹紧装置的模具保护方法中，将预定的模具保护区设置在模具闭合的区域中，并且基于物理量的变化来检测诸如存在异物的异常 在模具保护区内保护模具。 该方法包括以下步骤：将获取目标模具夹紧力的可动压板的关闭位置预先设置为基准位置; 设置模具保护区相对于参考位置的结束位置; 在生产操作期间获得可动压板的实际关闭位置（检测位置）; 并且基于检测位置与基准位置之间的偏差校正模具保护区域的终端位置。
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公开(公告)号：US20050151288A1
公开(公告)日：2005-07-14
申请号：US11017744
申请日：2004-12-22
申请人： Takashi Hakoda , Masahiko Miyajima
发明人： Takashi Hakoda , Masahiko Miyajima
CPC分类号： B29C45/661 , B29C45/844
摘要： In a mold protection method for a mold clamping apparatus, a predetermined mold protection zone is set in a zone in which a mold is closed, and an anomaly such as presence of a foreign object is detected on the basis of a change in a physical quantity in the mold protection zone so as to protect the mold. The method includes the steps of previously setting, as a reference position, a closed position of a movable platen at which a target mold clamping force is obtained; setting an end position of the mold protection zone with respect to the reference position; obtaining, during a production operation, an actual closed position (detected position) of the movable platen; and correcting the end position of the mold protection zone on the basis of a deviation between the detected position and the reference position.
摘要翻译： 在用于模具夹紧装置的模具保护方法中，将预定的模具保护区设置在模具闭合的区域中，并且基于物理量的变化来检测诸如存在异物的异常 在模具保护区内保护模具。 该方法包括以下步骤：将获取目标模具夹紧力的可动压板的关闭位置预先设置为基准位置; 设置模具保护区相对于参考位置的结束位置; 在生产操作期间获得可动压板的实际关闭位置（检测位置）; 并且基于检测位置与基准位置之间的偏差校正模具保护区域的终端位置。
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4.发明授权公开(公告)号：US06183682B2
公开(公告)日：2001-02-06
申请号：US09224055
申请日：1998-12-31
IPC分类号： B29C4547
CPC分类号： B29C45/82 , B29C45/5008 , B29C2045/824 , B29C2945/76006 , B29C2945/76083
摘要： Gas (air) is supplied into an oil transfer line extending between a front oil chamber of an injection cylinder and an oil tank during a molding cycle, excluding an injection step, thereby preventing impact which would otherwise occur due to oil pressure generated upon start of injection in the injection step. Thus, immediately before the start of the injection step, the oil transfer line becomes empty of or almost empty of oil. Accordingly, even when high-pressure oil is supplied into the injection cylinder in an impactive manner upon start of injection, pressure oil ejected from the injection cylinder flows swiftly through the oil transfer line.
摘要翻译： 气体（空气）被供给到在成型周期期间在注射缸的前油室和油箱之间延伸的输油管线，不包括注射步骤，从而防止由于开始时产生的油压而发生的冲击 在注射步骤中注射。 因此，在喷射步骤开始之前，油输送管路变空或几乎没有油。 因此，即使在注射开始时以冲击方式将高压油供给到注射缸中，从注射汽缸喷出的压力油迅速地流过输油管线。
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公开(公告)号：US6042760A
公开(公告)日：2000-03-28
申请号：US85015
申请日：1998-05-28
申请人： Makoto Nakazawa , Masahiko Miyajima
发明人： Makoto Nakazawa , Masahiko Miyajima
CPC分类号： B29C45/50 , B29C45/77 , B29C2045/5096
摘要： An injection molding method for an injection molding machine in which molten resin in an injection barrel is injected and charged into a cavity of a mold through advancement of a screw in order to form a thin molding product. When the screw reaches a first set point that is set in advance and corresponds to completion of charge during the advancement of the screw, the screw is immediately and forcibly retracted to a second set point that is set in advance. With is operation, when the screw reaches the first set point X1 corresponding to completion of charge during the advancement of the screw, the internal pressure of the cavity is relieved quickly. Therefore, the cavity, which has deformed due to high pressure resin, is restored to its designed shape before the resin solidifies.
摘要翻译： 一种注射成型机的注射成型方法，其中通过推进螺杆将注射筒中的熔融树脂注入并注入到模具的空腔中，以形成薄的成型产品。 当螺钉到达预先设定的第一设定点并对应于在螺杆前进期间的充电完成时，螺钉立即被强制地缩回到预先设定的第二设定点。 通过操作，当螺杆到达在螺杆前进期间对应于完成充电的第一设定点X1时，空腔的内部压力快速释放。 因此，在树脂固化之前，由于高压树脂而变形的空腔被恢复到其设计形状。
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公开(公告)号：US5756019A
公开(公告)日：1998-05-26
申请号：US616195
申请日：1996-03-15
申请人： Makoto Nakazawa , Masahiko Miyajima
发明人： Makoto Nakazawa , Masahiko Miyajima
CPC分类号： B29C45/7653
摘要： An injection pressure is detected as a pressure detection value Dp during injection and filling, and the thus obtained pressure detection value Dp is multiplied by a preset predetermined coefficient so as to be converted into a desired mold clamping force Fc with which the mold clamping force is controlled. The desired mold clamping force Fc is set to a minimum value which a mold does not open, that is, the desired mold clamping force Fc is calculated with the use of Fc=(.alpha.*S*.beta.)Dp, where .alpha. is a charging rate of resin in a mold cavity, S is an entire projected area of a molding article, .beta. is a safety factor, and Dp is a pressure detection value Dp. With this arrangement, in a section where the injection pressure gradually increases from zero during injection and filling, the profile (variation curve) of mold clamping force gradually increases as the injection pressure varies. At this stage, the mold clamping force during injection and filling is set to a minimum value with which the mold does not open so that the power consumption can be minimized.
摘要翻译： 在注射和填充期间，将压力检测值作为压力检测值Dp进行检测，将这样获得的压力检测值Dp乘以预先设定的规定系数，从而转换为合模力为期望的合模力Fc 受控。 将期望的合模力Fc设定为模具不打开的最小值，即，使用Fc =（α* S *β）Dp计算期望的模具夹紧力Fc，其中α是充电 模具腔中的树脂率，S是模制品的整个投影面积，β是安全系数，Dp是压力检测值Dp。 通过这种布置，在注射和填充期间注射压力从零逐渐增加的部分中，模具夹紧力的轮廓（变化曲线）随注射压力变化而逐渐增加。 在此阶段，注射和填充期间的模具夹紧力被设定为模具不打开的最小值，从而能够最大限度地降低功耗。
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