公开(公告)号：US20070182066A1

公开(公告)日：2007-08-09

申请号：US11628780

申请日：2005-06-06

申请人： Hiroshi Uchida ,  Tadayoshi Takahara ,  Tomoaki Eto

发明人： Hiroshi Uchida ,  Tadayoshi Takahara ,  Tomoaki Eto

IPC分类号： B29C45/00

CPC分类号： B29C45/174 ,  B29C45/0025 ,  B29C45/2628

摘要： This invention relates to an injection molding method using an injection mold. The method comprises (1) a molten resin injection step for injecting the molten resin from a gate into a cavity, (2) a pressure-keeping step for continuously applying pressure from the gate after the molten resin injection step, and (3) a fluid injection step for injecting a fluid toward the back surface of the molded product. The pressure-keeping step and the fluid injection step are simultaneously executed. Simultaneously executing these two steps can lower the pressure that is to be continuously applied from the gate. The present injection molding method can reduce the pressure of the fluid to be injected toward the back surface of the molded product in order to cause the back surface of the molded product to separate from the cavity surface.

摘要翻译： 本发明涉及一种使用注射模具的注射成型方法。 该方法包括：（1）熔融树脂注入步骤，用于将熔融树脂从浇口注入空腔;（2）在熔融树脂注入步骤之后连续地从浇口施加压力的压力保持步骤，以及（3） 流体注射步骤，用于将流体注射到模制产品的背面。 同时执行压力保持步骤和流体注入步骤。 同时执行这两个步骤可以降低从门连续施加的压力。 本注射成型方法可以降低要注射成型品的背面的流体的压力，以使模制品的背面与空腔表面分离。

公开(公告)号：US07582250B2

公开(公告)日：2009-09-01

申请号：US11628780

申请日：2005-06-06

申请人： Hiroshi Uchida ,  Tadayoshi Takahara ,  Tomoaki Eto

发明人： Hiroshi Uchida ,  Tadayoshi Takahara ,  Tomoaki Eto

IPC分类号： B29C44/02 ,  B29C45/00

CPC分类号： B29C45/174 ,  B29C45/0025 ,  B29C45/2628

摘要： This invention relates to an injection molding method using an injection mold. The method comprises (1) a molten resin injection step for injecting the molten resin from a gate into a cavity, (2) a pressure-keeping step for continuously applying pressure from the gate after the molten resin injection step, and (3) a fluid injection step for injecting a fluid toward the back surface of the molded product. The pressure-keeping step and the fluid injection step are simultaneously executed.Simultaneously executing these two steps can lower the pressure that is to be continuously applied from the gate. The present injection molding method can reduce the pressure of the fluid to be injected toward the back surface of the molded product in order to cause the back surface of the molded product to separate from the cavity surface.

摘要翻译： 本发明涉及一种使用注射模具的注射成型方法。 该方法包括：（1）熔融树脂注入步骤，用于将熔融树脂从浇口注入空腔;（2）在熔融树脂注入步骤之后连续地从浇口施加压力的压力保持步骤，以及（3） 流体注射步骤，用于将流体注射到模制产品的背面。 同时执行压力保持步骤和流体注入步骤。 同时执行这两个步骤可以降低从门连续施加的压力。 本注射成型方法可以降低要注射成型品的背面的流体的压力，以使模制品的背面与空腔表面分离。

公开(公告)号：US20080246188A1

公开(公告)日：2008-10-09

申请号：US12078865

申请日：2008-04-07

申请人： Tsuyoshi Arai ,  Tadayoshi Takahara ,  Yoshihito Saigo ,  Tatsuya Inoyama ,  Hiroshi Koyama

发明人： Tsuyoshi Arai ,  Tadayoshi Takahara ,  Yoshihito Saigo ,  Tatsuya Inoyama ,  Hiroshi Koyama

IPC分类号： B29C45/00

CPC分类号： B29C45/76 ,  B29C2945/76588

摘要： The method of predicting the amount of deformation due to shrinkage of a molded article of the present invention finds a support point P of the bending moment M from a distribution of shrinkage rates of a molding material forming a molded article 10 and uses the support point P to predict the amount of deformation. At that time, it is preferable to use the support point P to find the bending moment M and to use the bending moment M to predict the amount of deformation.

摘要翻译： 由本发明的成形品收缩引起的变形量的预测方法根据成型品10的成形材料的收缩率的分布求出弯矩M的支撑点P，并使用支承点P 预测变形量。 此时，优选使用支撑点P来找到弯矩M，并且使用弯矩M来预测变形量。

公开(公告)号：US06581473B2

公开(公告)日：2003-06-24

申请号：US09942875

申请日：2001-08-31

申请人： Tadayoshi Takahara ,  Jun Chen ,  Yoshio Sugimoto

发明人： Tadayoshi Takahara ,  Jun Chen ,  Yoshio Sugimoto

IPC分类号： G01N1100

CPC分类号： G06F17/5018 ,  G01N2203/0071 ,  G01N2203/0216 ,  G06F2217/41

摘要： A method for analyzing creep characteristic of a plastic molded substance is provided wherein the creep characteristic can be analyzed of an actual plastic molded substance having various shape and fastening conditions with high precision. The main stress value for each section of the analysis target is read out, hydrostatic stress &sgr;m of each section is calculated from the main stress value, and the stress condition is determined to be tensile stress when &sgr;m is positive and to be compressive stress when &sgr;m is negative. Tensile or compressive characteristic value is assigned based on the stress condition at each section, and creep is calculated for a predetermined time period based on the characteristic value. By employing characteristic values depending on the stress conditions of each section, precision of creep characteristic analysis is greatly enhanced.

摘要翻译： 提供一种用于分析塑料模制物质的蠕变特性的方法，其中可以高精度地分析具有各种形状和紧固条件的实际塑料模制物质的蠕变特性。 读出分析目标每个部分的主应力值，从主应力值计算每个截面的静水压应力sigmam，当Sigmam为正时应力条件为拉应力，Sigmam为压应力 是否定的 基于每个部分的应力条件分配拉伸或压缩特性值，并且基于特征值计算预定时间段的蠕变。 通过根据各部分的应力条件采用特征值，大大提高了蠕变特性分析的精度。

公开(公告)号：US07894931B2

公开(公告)日：2011-02-22

申请号：US12078865

申请日：2008-04-07

申请人： Tsuyoshi Arai ,  Tadayoshi Takahara ,  Yoshihito Saigo ,  Tatsuya Inoyama ,  Hiroshi Koyama

发明人： Tsuyoshi Arai ,  Tadayoshi Takahara ,  Yoshihito Saigo ,  Tatsuya Inoyama ,  Hiroshi Koyama

IPC分类号： G06F19/00 ,  B29C45/00

CPC分类号： B29C45/76 ,  B29C2945/76588

摘要： The method of predicting the amount of deformation due to shrinkage of a molded article of the present invention finds a support point P of the bending moment M from a distribution of shrinkage rates of a molding material forming a molded article 10 and uses the support point P to predict the amount of deformation. At that time, it is preferable to use the support point P to find the bending moment M and to use the bending moment M to predict the amount of deformation.

摘要翻译： 由本发明的成形品收缩引起的变形量的预测方法根据成型品10的成形材料的收缩率的分布求出弯矩M的支撑点P，并使用支承点P 预测变形量。 此时，优选使用支撑点P来找到弯矩M，并且使用弯矩M来预测变形量。

公开(公告)号：US06623159B2

公开(公告)日：2003-09-23

申请号：US09942876

申请日：2001-08-31

申请人： Tadayoshi Takahara ,  Jun Chen ,  Yoshio Sugimoto

发明人： Tadayoshi Takahara ,  Jun Chen ,  Yoshio Sugimoto

IPC分类号： G01N2516

CPC分类号： G01N33/442 ,  G01N2203/0057 ,  G01N2203/0071

摘要： In order to precisely analyze thermal deformation of a substance which thermally shrinks over time, the amount of deformation of a substance is determined by separate steps of calculation of elasto-plastic deformation during temperature increase (step S12); calculation of creep deformation from the time when the temperature increase is completed till the time when the temperature decrease is started (step S14); and calculation of elasto-plastic deformation during the temperature decrease (step S16). When calculating the creep deformation, it is assumed that deformation due to the thermal shrinkage of the substance over time occurs simultaneous with the creep deformation, and strain rate is calculated as the time derivative of the total strain which is the sum of creep strain and the strain produced by thermal shrinkage. The creep deformation is then calculated by integrating the strain rate over the time from when the temperature increase is completed until the time when the temperature decrease is started.