JP2001269962A - Method and device for estimating temperature of molded item, method and device for estimating deformation quantity, and storage medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for estimating the temperature of a molded item and a method and a device for estimating a deformation quantity, capable of accurately estimating variations in the temperature and the deformation quantity. SOLUTION: In the molding process of the molded item having a groove- shaped part, the temperatures in a division step (S601), an extraction step (S602), a temperature estimating step (S603), the side with the groove-shaped part and the side without the same are regarded as the mold temperatures of a cavity surface to estimate the variations in the temperature of the molded item during a molding process. In the step (S601), the shape of the molded item is divided by minute surfaces. In the step (S602), the portion having the groove-shaped part is extracted from the surface divided in the step (S601). In the step (S603), the cross section of the portion extracted in the step (S602) is partially extracted for the temperatures on the side with the groove-shaped part and the side without the same to be estimated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to "temperature unevenness" generated during molding of a resin molded product having a predetermined shape such as a groove-shaped portion, a corner-shaped portion or a rib-shaped portion, and the "warpage amount" caused by the temperature unevenness. The present invention relates to a method and a device for predicting the temperature of a molded article, a method and a device for predicting a deformation amount, and a storage medium storing a control program for controlling the temperature prediction device or the deformation amount prediction device.

[0002]

2. Description of the Related Art In general, there is a "warp" as one of molding defects of an injection molded product. This “warpage” is caused by uneven cooling of the resin due to uneven thickness of the molded product, shapes such as groove-shaped portions, corner-shaped portions, and rib-shaped portions, and uneven arrangement of cooling pipes. It is a deformation.

[0003] In order to produce an injection molded article with little "warpage", the "temperature unevenness" of the molded article is predicted and the "temperature unevenness" is calculated.
Therefore, it is necessary to predict the amount of deformation caused by the deformation, and to appropriately adjust the thickness and shape of the molded product, the arrangement of the cooling pipes, and the like.

Conventionally, as a method of predicting the temperature distribution (temperature unevenness) of a complicated three-dimensional shape, a finite element method, a simulation model in which the shape of a molded product is divided by a number of minute surfaces called shell elements, By applying a numerical simulation method (numerical analysis method) such as a difference method, a temperature distribution of each part of the molded article is obtained, and the temperature distribution is replaced with an equivalent thermal load as needed, and a deformation analysis is performed to obtain a “warpage amount”. Predictions have been made.

[0005]

However, in the above-mentioned conventional example, when the shape of a molded product is modeled by dividing it into minute surfaces and giving a thickness to the surface, the groove shape is reduced. There is a problem that heat accumulation due to the shape effect of the portion, the corner shape portion or the rib shape portion is not taken into consideration, and it is impossible to accurately predict the temperature distribution.

In the portion of the resin molded product having the groove-shaped portion,
It is known that a temperature difference occurs between the grooved side and the non-groove side facing it during molding.

[0007] In the corner portion of the resin molded product,
It is known that a temperature difference occurs between the inside and the outside of a corner-shaped portion during molding.

Further, it is known that a temperature difference occurs between the side having the rib-shaped portion and the side having no rib-shaped portion at the time of molding in the rib-shaped portion of the resin molded product.

The temperature difference between the groove-shaped portion, the corner-shaped portion and the rib-shaped portion is a major factor in the occurrence of "warpage" of the molded product.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and a first object of the present invention is to accurately predict uneven temperature and deformation. It is an object of the present invention to provide a method and apparatus for estimating the temperature of a molded product and a method and apparatus for estimating the amount of deformation.

A second object of the present invention is to provide a storage medium storing a control program capable of smoothly controlling the above-described molded article temperature prediction device and deformation amount prediction device of the present invention. Is to do.

[0012]

In a molding process of a molded article having a fixed-shaped portion, a dividing step of dividing the shape of the molded article by a minute surface, and a predetermined-shaped portion from the surface divided by the dividing step are provided. An extraction step of extracting a part, a temperature prediction step of partially extracting a cross section of the part extracted by the extraction step, and predicting a temperature on a side with and without the predetermined shape portion, and a temperature prediction step. A temperature unevenness predicting step of predicting temperature unevenness of a molded article during a molding process by using a temperature of the side having the predetermined shape portion and a temperature of the side having no predetermined shape portion as a mold temperature of the cavity surface.

According to a second aspect of the present invention, there is provided a method for predicting a temperature of a molded article according to the first aspect of the present invention, wherein the temperature predicting step comprises a numerical simulation method. (Numerical analysis method).

According to a third aspect of the present invention, there is provided a method for estimating a temperature of a molded article according to the second aspect, wherein the numerical simulation method comprises a difference method. There is a feature.

According to a fourth aspect of the present invention, there is provided a method for predicting a temperature of a molded article, wherein the numerical simulation method comprises a finite element method. It is characterized by being.

According to a fifth aspect of the present invention, there is provided a method for predicting the temperature of a molded article according to the second aspect, wherein the numerical simulation method comprises a finite volume method. It is characterized by being.

According to a sixth aspect of the present invention, there is provided a method for predicting the temperature of a molded article according to the second aspect, wherein the numerical simulation method comprises a boundary element method. It is characterized by being.

According to a seventh aspect of the present invention, there is provided a method for estimating a temperature of a molded article, the method comprising the steps of:
It is an injection molding process.

According to another aspect of the present invention, there is provided a method for estimating a temperature of a molded article, the method comprising: It is characterized by being.

According to a ninth aspect of the present invention, there is provided a method of estimating a temperature of a molded article according to the first aspect of the present invention, wherein the predetermined shape portion includes a projection-shaped portion. It is characterized by being.

According to a tenth aspect of the present invention, there is provided a method of estimating a temperature of a molded article according to the first aspect of the invention, wherein the predetermined shape portion comprises:
It is a corner-shaped part.

In order to achieve the first object, a method of estimating a temperature of a molded article according to claim 11 is a method of estimating a temperature of a molded article according to claim 1, wherein the predetermined shape portion includes:
It is a rib-shaped part.

According to a twelfth aspect of the present invention, there is provided an apparatus for estimating a temperature of a molded article, wherein the temperature of the molded article is divided into minute surfaces in a molding process of the molded article having a predetermined shape. Dividing means, extracting means for extracting a portion having a predetermined shape portion from the surface divided by the dividing means, and extracting a part of a cross section of the portion extracted by the extracting means to obtain a side having the predetermined shape portion Temperature predicting means for predicting the temperature of the side having no predetermined shape, and the temperature of the side having the predetermined shape portion and the temperature of the side having no predetermined shape obtained by the temperature predicting means are used as the mold temperature of the cavity surface to predict the temperature unevenness of the molded article during the molding process. Temperature unevenness predicting means.

According to a thirteenth aspect of the present invention, there is provided a molded article temperature predicting apparatus, wherein the temperature predicting means comprises a numerical simulation method. (Numerical analysis method).

According to a fourth aspect of the present invention, there is provided a molded article temperature estimating apparatus according to the thirteenth aspect, wherein the numerical simulation method is a differential method. There is a feature.

According to a fifteenth aspect of the present invention, there is provided a temperature estimating apparatus for a molded article according to the thirteenth aspect, wherein the numerical simulation method comprises a finite element method. It is characterized by being.

According to another aspect of the present invention, there is provided an apparatus for estimating a temperature of a molded article, wherein the numerical simulation method comprises a finite volume method. It is characterized by being.

According to another aspect of the present invention, there is provided an apparatus for estimating the temperature of a molded article, wherein the numerical simulation method comprises a boundary element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 18 is the apparatus for predicting temperature of molded article according to claim 12, wherein the molding process is an injection molding process. There is a feature.

According to another aspect of the present invention, there is provided an apparatus for estimating a temperature of a molded article according to the twelfth aspect of the present invention, wherein the predetermined shape section includes a groove-shaped section. It is characterized by being.

According to a twelfth aspect of the present invention, there is provided a molded article temperature estimating apparatus according to the twelfth aspect of the present invention, wherein the predetermined shaped part is a projection shaped part. It is characterized by being.

According to a twenty-first aspect of the present invention, there is provided an apparatus for estimating a temperature of a molded article according to the twelfth aspect of the present invention, wherein the predetermined shape part is a corner-shaped part. It is characterized by being.

According to a second aspect of the present invention, there is provided an apparatus for estimating a temperature of a molded article according to the twelfth aspect of the present invention, wherein the predetermined shape portion is a rib-shaped portion. It is characterized by being.

According to a twenty-third aspect of the present invention, in order to achieve the first object, in a molding process of a molded product having a groove-shaped portion, the shape of the molded product is divided by a minute surface. Dividing step, extracting step of extracting a portion having a groove-shaped portion from the surface divided by the dividing step, and extracting a part of the cross section of the portion extracted by the extracting step, and extracting a portion having a groove-shaped portion. Temperature prediction step of predicting the temperature of the non-existent side, and using the temperatures of the side with and without the grooved portion obtained by the temperature prediction step as the mold temperature of the cavity surface to predict the temperature unevenness of the molded article during the molding process. A temperature unevenness prediction step.

According to a twenty-fourth aspect of the present invention, there is provided a method for estimating a temperature of a molded article according to the twenty-third aspect, wherein the step of estimating the temperature of the molded article comprises a numerical simulation method. (Numerical analysis method).

In order to achieve the first object, a method for predicting temperature of a molded article according to claim 25 is a method for predicting temperature of molded article according to claim 24, wherein the numerical simulation method is a difference method. There is a feature.

In order to achieve the first object, a method for predicting temperature of a molded article according to claim 26 is the method for predicting temperature of molded article according to claim 24, wherein the numerical simulation method is a finite element method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 27 is the method for predicting temperature of a molded article according to claim 24, wherein the numerical simulation method is a finite volume method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 28 is the method for predicting temperature of a molded article according to claim 24, wherein the numerical simulation method comprises a boundary element method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 29 is the method for predicting temperature of a molded article according to claim 23, wherein the molding process is an injection molding process. There is a feature.

In order to achieve the first object, the apparatus for predicting temperature of a molded product according to claim 30 divides the shape of the molded product by minute surfaces in a molding process of a molded product having a groove-shaped portion. Dividing means, extracting means for extracting a portion having a groove-shaped portion from a surface divided by the dividing means, and a side having a groove-shaped portion by partially extracting a cross section of the portion extracted by the extracting means. Temperature estimating means for estimating the temperature on the non-existent side, and using the temperatures on the side with and without the groove-shaped portion obtained by the temperature estimating means as the mold temperature of the cavity surface to estimate the temperature unevenness of the molded article during the molding process. Temperature unevenness predicting means.

According to a thirty-first aspect of the present invention, there is provided a molded article temperature estimating apparatus according to the thirty-first aspect, wherein the temperature estimating means comprises a numerical simulation method. (Numerical analysis method).

According to another aspect of the present invention, there is provided an apparatus for estimating the temperature of a molded article, wherein the numerical simulation method is performed by a difference method. There is a feature.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 33 is the apparatus for predicting temperature of molded article according to claim 31, wherein the numerical simulation method is a finite element method. It is characterized by being.

According to a thirty-first aspect of the present invention, there is provided a temperature estimating apparatus for a molded article according to the thirty-first aspect, wherein the numerical simulation method comprises a finite volume method. It is characterized by being.

According to a third aspect of the present invention, there is provided an apparatus for predicting temperature of a molded article, wherein the numerical simulation method comprises a boundary element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 36 is the apparatus for predicting temperature of molded article according to claim 30, wherein the molding process is an injection molding process. There is a feature.

According to a third aspect of the present invention, there is provided a method for predicting a temperature of a molded article, wherein the shape of the molded article is divided by a minute surface in a molding process of the molded article having a projection. A dividing step, an extracting step of extracting a portion having a projecting portion from the surface divided by the dividing step, and extracting a part of the cross section of the portion extracted by the extracting step to form a portion having the projecting portion. A temperature prediction step for predicting the temperature on the non-existent side, and using the temperatures on the side with and without the protruding portion obtained by the temperature prediction step as the mold temperature of the cavity surface to predict the temperature unevenness of the molded article during the molding process. Temperature unevenness prediction step.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 38 is a method for predicting temperature of a molded article according to claim 37, wherein the temperature predicting step comprises a numerical simulation method. (Numerical analysis method).

In order to achieve the first object, a method for predicting temperature of a molded article according to claim 39 is a method for predicting temperature of molded article according to claim 38, wherein the numerical simulation method is a difference method. There is a feature.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 40 is the method for predicting temperature of a molded article according to claim 38, wherein the numerical simulation method is a finite element method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 41 is the method for predicting temperature of a molded article according to claim 38, wherein the numerical simulation method is a finite volume method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 42 is the method for predicting temperature of a molded article according to claim 38, wherein the numerical simulation method comprises a boundary element method. It is characterized by being.

In order to achieve the first object, the method for predicting the temperature of a molded article according to claim 43 is the method for predicting temperature of a molded article according to claim 38, wherein the molding process is an injection molding process. There is a feature.

In order to achieve the first object, the apparatus for predicting temperature of a molded product according to claim 44 divides the shape of the molded product by minute surfaces in a molding process of a molded product having a protruding portion. Dividing means, extracting means for extracting a portion having a projection-shaped portion from the surface divided by the dividing means, and extracting a part of the cross-section of the portion extracted by the extracting means, and Temperature predicting means for predicting the temperature on the non-existent side, and using the temperatures on the side with and without the protruding portion obtained by the temperature predicting means as the mold temperature of the cavity surface to predict the temperature unevenness of the molded article during the molding process. Temperature unevenness predicting means.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 45 is the apparatus for predicting temperature of molded article according to claim 44, wherein the temperature predicting means is a numerical simulation method. (Numerical analysis method).

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 46 is a method for predicting temperature of molded article according to claim 45, wherein the numerical simulation method is a differential method. There is a feature.

According to another aspect of the present invention, there is provided an apparatus for estimating a temperature of a molded article, wherein the numerical simulation method comprises a finite element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 48 is the apparatus for predicting temperature of molded article according to claim 45, wherein the numerical simulation method is a finite volume method. It is characterized by being.

According to another aspect of the present invention, there is provided an apparatus for estimating a temperature of a molded article, wherein the numerical simulation method comprises a boundary element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 50 is the apparatus for predicting temperature of molded article according to claim 44, wherein the molding process is an injection molding process. There is a feature.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 51 is characterized in that the shape of the molded article is divided by a minute surface in a molding process of a molded article having a corner portion. Dividing step, extracting a portion having a corner-shaped portion from the surface divided by the dividing step, and extracting a part of the cross section of the portion extracted by the extracting step to inside and outside of the corner-shaped portion Temperature prediction step of predicting the temperature of the molded product, and the temperature unevenness prediction step of estimating the temperature unevenness of the molded article during the molding process using the temperature inside and outside the corner portion obtained by the temperature estimation step as the mold temperature of the cavity surface And characterized in that:

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 52 is a method for predicting temperature of a molded article according to claim 51, wherein the temperature predicting step comprises a numerical simulation method. (Numerical analysis method).

In order to achieve the first object, the method for predicting the temperature of a molded article according to claim 53 is a method for predicting temperature of a molded article according to claim 52, wherein the numerical simulation method is a difference method. There is a feature.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 54 is the method for predicting temperature of a molded article according to claim 52, wherein the numerical simulation method is a finite element method. It is characterized by being.

In order to achieve the first object, a method for predicting temperature of a molded article according to claim 55 is a method for predicting temperature of a molded article according to claim 52, wherein the numerical simulation method is a finite volume method. It is characterized by being.

In order to achieve the first object, the method for predicting the temperature of a molded article according to claim 56 is the method for predicting temperature of a molded article according to claim 52, wherein the numerical simulation method is a boundary element method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 57 is the method for predicting temperature of a molded article according to claim 51, wherein the molding process is an injection molding process. There is a feature.

In order to achieve the first object, the apparatus for predicting temperature of a molded product according to claim 58 divides the shape of the molded product into minute surfaces in a molding process of a molded product having a corner-shaped portion. Dividing means, extracting means for extracting a portion having a corner-shaped portion from the surface divided by the dividing means, and extracting a part of the cross section of the portion extracted by the extracting means to inside and outside of the corner-shaped portion Temperature estimating means for estimating the temperature of the molded product, and temperature unevenness estimating means for estimating the temperature unevenness of the molded article during the molding process using the temperatures inside and outside the corner portion obtained by the temperature estimating means as the mold temperature of the cavity surface. And characterized in that:

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 59 is the apparatus for predicting temperature of molded article according to claim 58, wherein the temperature predicting means comprises a numerical simulation method. (Numerical analysis method).

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 60 is the apparatus for predicting temperature of molded article according to claim 59, wherein the numerical simulation method is a difference method. There is a feature.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 61 is the apparatus for predicting temperature of molded article according to claim 59, wherein the numerical simulation method is a finite element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 62 is the apparatus for predicting temperature of molded article according to claim 59, wherein the numerical simulation method is a finite volume method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 63 is the apparatus for predicting temperature of molded article according to claim 59, wherein the numerical simulation method is a boundary element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 64 is the apparatus for predicting temperature of molded article according to claim 58, wherein the molding process is an injection molding process. There is a feature.

In order to achieve the first object, the method for predicting the temperature of a molded product according to claim 65 is characterized in that the shape of the molded product is divided into minute surfaces in a molding process of a molded product having a rib-shaped portion. A dividing step, an extracting step of extracting a portion having a rib-shaped portion from the surface divided by the dividing step, and extracting a part of the cross section of the portion extracted by the extracting step to obtain a portion having a rib-shaped portion. A temperature prediction step of predicting the temperature of the non-existent side, and using the temperatures of the side with and without the rib-shaped portion obtained by the temperature prediction step as the mold temperature of the cavity surface to predict the temperature unevenness of the molded article during the molding process. Temperature unevenness prediction step.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 66 is the method for predicting temperature of a molded article according to claim 65, wherein the temperature predicting step comprises a numerical simulation method. (Numerical analysis method).

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 67 is a method for predicting temperature of a molded article according to claim 66, wherein the numerical simulation method is a difference method. There is a feature.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 68 is a method for predicting temperature of a molded article according to claim 66, wherein the numerical simulation method is a finite element method. It is characterized by being.

In order to achieve the first object, the method for predicting the temperature of a molded article according to claim 69 is the method for predicting temperature of a molded article according to claim 66, wherein the numerical simulation method is a finite volume method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 70 is the method for predicting temperature of a molded article according to claim 66, wherein the numerical simulation method is performed by a boundary element method. It is characterized by being.

In order to achieve the first object, a method for predicting the temperature of a molded article according to claim 71 is the method for predicting temperature of a molded article according to claim 65, wherein the molding process is an injection molding process. There is a feature.

In order to achieve the first object, the apparatus for predicting temperature of a molded product according to claim 72 divides the shape of the molded product by minute surfaces in a molding process of a molded product having a rib-shaped portion. Dividing means, extracting means for extracting a portion having a rib-shaped portion from a surface divided by the dividing means, and a side having a rib-shaped portion by partially extracting a cross section of the portion extracted by the extracting means. Temperature estimating means for estimating the temperature on the non-existent side, and using the temperature on the side with and without the rib-shaped portion obtained by the temperature estimating means as the mold temperature on the cavity surface, to estimate the temperature unevenness of the molded article during the molding process. Temperature unevenness predicting means.

According to a third aspect of the present invention, in order to achieve the first object, a temperature estimation apparatus for a molded article according to the seventy-second aspect, wherein the temperature estimating means includes a numerical simulation method. (Numerical analysis method).

In order to achieve the first object, the temperature estimation apparatus for molded articles according to claim 74 is the apparatus for predicting temperature of molded articles according to claim 73, wherein the numerical simulation method is a difference method. There is a feature.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 75 is the apparatus for predicting temperature of molded article according to claim 74, wherein the numerical simulation method is a finite element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 76 is the apparatus for predicting temperature of molded article according to claim 74, wherein the numerical simulation method is a finite volume method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 77 is the apparatus for predicting temperature of molded article according to claim 74, wherein the numerical simulation method is a boundary element method. It is characterized by being.

In order to achieve the first object, the apparatus for predicting temperature of a molded article according to claim 78 is the apparatus for predicting temperature of molded article according to claim 73, wherein the molding process is an injection molding process. There is a feature.

In order to achieve the first object, the method for predicting the amount of deformation of a molded article according to claim 79 is as follows.
11,23-29,37-43,51-57,65-7
23. A method for predicting the temperature of a molded article according to claim 1,
30 to 36, 44 to 50, 58 to 64, and 72 to 78. Based on the temperature history of the molded article obtained by the apparatus for predicting the temperature of the molded article, the temperature change to the room temperature is finally changed as needed. It is characterized in that the amount of deformation is predicted by performing a deformation analysis by replacing with a load.

In order to achieve the first object, a method for predicting the amount of deformation of a molded product according to claim 80 is provided.
In the method for predicting a deformation amount of a molded product as described above, the deformation amount is a warpage amount.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 81 is characterized in that:
11,23-29,37-43,51-57,65-7
23. A method for predicting the temperature of a molded article according to claim 1,
30 to 36, 44 to 50, 58 to 64, and 72 to 78. Based on the temperature history of the molded article obtained by the apparatus for predicting the temperature of the molded article, the temperature change to the room temperature is finally changed as needed. It is characterized in that the amount of deformation is predicted by performing a deformation analysis by replacing with a load.

In order to achieve the first object, a molded article deformation amount predicting apparatus according to claim 82 is provided.
In the above-described apparatus for predicting the amount of deformation of a molded product, the amount of deformation is a warpage.

In order to achieve the first object, a method for predicting the amount of deformation of a molded article according to claim 83 is characterized in that the shape of the molded article is reduced on a minute surface in a molding process of a molded article having a predetermined shape portion. A dividing step of dividing, an attribute assigning step of assigning a shape and a dimension of a predetermined shape portion as attributes to the surface divided by the dividing step, and a temperature of a cross section of a portion to which the attribute is assigned by the attribute assigning step is partially measured. A temperature calculation step obtained by a numerical simulation method (numerical analysis method); and a shrinkage strain calculation for obtaining a shrinkage strain of each surface by performing a flow simulation by applying the numerical simulation method to the molded article model divided by the division step. And deforming the molded product model divided by the dividing step by applying a thermal load and shrinkage distortion of each part. And a deformation analysis step of performing analysis, for all of the portions to which the shape of the predetermined shape portion has been given by the attribute giving step, determine the temperature of the predetermined shape portion of each part by the temperature calculation step, and simultaneously by the shrinkage strain calculation step By determining the shrinkage strain of each minute surface, converting the temperature obtained in the temperature calculation step to an equivalent thermal load, and applying the shrinkage strain obtained in the shrinkage strain calculation step as an analysis condition in the deformation analysis step, It is characterized by predicting the amount of deformation of the molded article.

In order to achieve the first object, a method for predicting the amount of deformation of a molded product according to claim 84 is described in claim 83.
In the method for predicting the amount of deformation of a molded article as described above, the temperature of the predetermined shape portion obtained in the temperature calculation step is used as a boundary condition in the calculation in the contraction strain calculation step.

In order to achieve the first object, a method for predicting the deformation of a molded product according to claim 85 is provided in claim 83.
Alternatively, in the method for predicting deformation of a molded product according to Item 84, the predetermined shape portion is a groove shape portion.

In order to achieve the first object, a method for predicting the deformation of a molded product according to claim 86 is provided by claim 83.
Alternatively, in the method for predicting deformation amount of a molded product according to Item 84, the predetermined shape portion is a projection shape portion.

In order to achieve the first object, a method for predicting the amount of deformation of a molded product according to claim 87 is provided by claim 83.
Alternatively, in the method for predicting deformation of a molded product according to Item 84, the predetermined shape portion is a corner shape portion.

In order to achieve the first object, a method for predicting the amount of deformation of a molded product according to claim 88 is described in claim 83.
Alternatively, in the method for predicting a deformation amount of a molded product according to Item 84, the predetermined shape portion is a rib shape portion.

In order to achieve the first object, the method for predicting the amount of deformation of a molded product according to claim 89 is as defined in claim 83.
In the method for predicting the amount of deformation of a molded article as described above, the numerical simulation method is a difference method.

In order to achieve the first object, a method for predicting the amount of deformation of a molded product according to claim 90 is provided by claim 83.
In the method for predicting the amount of deformation of a molded article as described above, the numerical simulation method is a finite element method.

In order to achieve the first object, a method for predicting the amount of deformation of a molded article according to claim 91 is provided by claim 83.
In the method for predicting the amount of deformation of a molded article as described above, the numerical simulation method is a finite volume method.

In order to achieve the first object, a method for predicting the amount of deformation of a molded article according to claim 92 is provided by claim 82.
In the method of predicting deformation of a molded product as described above, the numerical simulation method is a boundary element method.

In order to achieve the first object, a method for predicting the deformation of a molded product according to claim 93 is provided by claim 82.
In the method for predicting the amount of deformation of a molded article as described above, the molding process is an injection molding process.

In order to achieve the first object, a method for predicting the amount of deformation of a molded product according to claim 94 is provided by claim 82.
92. The method for predicting the amount of deformation of a molded product according to any one of items 92 to 93, wherein the amount of deformation is a warpage.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 95 is characterized in that, in a molding process of a molded product having a predetermined shape portion, the shape of the molded product is reduced on a minute surface. Dividing means for dividing, attribute providing means for giving the shape and size of the predetermined shape portion as attributes to the surface divided by the dividing means, and partial temperature of the cross section of the part to which the attribute is given by the attribute giving means Temperature calculation means obtained by a numerical simulation method (numerical analysis method), and shrinkage strain calculation means for performing flow simulation by applying the numerical simulation method to the molded article model divided by the division means and obtaining shrinkage distortion of each surface. And, a deformation analysis means for performing a deformation analysis by applying a thermal load and shrinkage strain of each part to the molded product model divided by the division means, For all the parts to which the shape of the predetermined shape part has been given by the attribute giving means, the temperature calculating means obtains the temperature of the predetermined shape part of each part, and at the same time, the shrinkage strain calculating means obtains the shrinkage strain of each minute surface. Convert the temperature obtained by the calculating means into an equivalent heat load,
In addition, the amount of deformation of the molded article is predicted by giving the shrinkage strain obtained by the shrinkage strain calculation means as an analysis condition in the deformation analysis means.

In order to achieve the first object, a molded product deformation amount predicting apparatus according to claim 96 is provided.
In the apparatus for predicting the amount of deformation of a molded article as described above, the temperature of the predetermined shape portion obtained by the temperature calculating means is used as a boundary condition for calculation by the shrinkage strain calculating means.

In order to achieve the first object, a molded article deformation amount predicting device according to claim 97 is provided.
Alternatively, in the molded product deformation amount prediction apparatus according to 96, the predetermined shape portion is a groove-shaped portion.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 98 is provided by claim 95.
Alternatively, in the molded article deformation amount predicting apparatus according to 96, the predetermined shape portion is a projection shape portion.

In order to achieve the first object, a molded product deformation amount predicting apparatus according to claim 99 is provided.
Alternatively, in the apparatus for predicting deformation of a molded product according to item 96, the predetermined shape portion is a corner shape portion.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 100 is provided by claim 9.
In the apparatus for predicting a deformation amount of a molded product according to 5 or 96,
The predetermined shape portion is a rib shape portion.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded article according to claim 101 is based on claim 9.
5. The apparatus according to claim 5, wherein the numerical simulation method is a difference method.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 102 is provided by claim 9.
6. The apparatus for predicting the amount of deformation of a molded product according to claim 5, wherein the numerical simulation method is a finite element method.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 103 is the same as that of claim 9.
6. The apparatus for predicting the amount of deformation of a molded product according to claim 5, wherein the numerical simulation method is a finite volume method.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 104 is provided by claim 9.
6. The apparatus for predicting the amount of deformation of a molded product according to claim 5, wherein the numerical simulation method is a boundary element method.

In order to achieve the first object, the apparatus for predicting the amount of deformation of a molded article according to claim 105 is provided by claim 9.
5. The apparatus for predicting the amount of deformation of a molded product according to claim 5, wherein the molding process is an injection molding process.

Further, in order to achieve the first object, the apparatus for predicting the amount of deformation of a molded product according to claim 106 is as follows.
95. The apparatus for predicting the amount of deformation of a molded product according to claim 8, wherein:
In the apparatus for predicting a deformation amount of a molded product according to any one of Items 8 to 104 or 105, the deformation amount is a warpage amount.

In order to achieve the second object, the storage medium according to claim 107 is for controlling a molded article temperature estimating apparatus for estimating a temperature during a molding process of a molded article having a predetermined shape portion. A storage module storing the control program, wherein the control program has a division module that divides the shape of the molded article on a minute surface in a molding process, and a predetermined shape portion from the surface divided by the division module. An extraction module for extracting a portion, a temperature prediction module for partially extracting a cross section of the portion extracted by the extraction module and predicting a temperature on a side with and without the predetermined shape portion, and a temperature prediction module. The temperature for predicting the temperature unevenness of the molded article during the molding process, using the temperature of the side with and without the specified shape part as the mold temperature of the cavity surface And having a unevenness prediction module.

In order to achieve the second object, the storage medium according to claim 108 is the storage medium according to claim 107, wherein the temperature prediction module applies a numerical simulation method (numerical analysis method). It is characterized by performing.

In order to achieve the second object, the storage medium according to claim 109 is the storage medium according to claim 108, wherein the numerical simulation method is a difference method.

In order to achieve the second object, the storage medium according to claim 110 is the storage medium according to claim 108, wherein the numerical simulation method is a finite element method.

In order to achieve the second object, the storage medium according to claim 111 is the storage medium according to claim 108, wherein the numerical simulation method is a finite volume method.

In order to achieve the second object, a storage medium according to claim 112 is the storage medium according to claim 108, wherein the numerical simulation method is a boundary element method.

In order to achieve the second object, the storage medium according to claim 113 is the storage medium according to claim 107, wherein the molding process is an injection molding process.

In order to achieve the second object, the storage medium according to claim 114 is characterized in that, in the storage medium according to claim 107, the predetermined shape portion is a groove-shaped portion.

In order to achieve the second object, the storage medium according to claim 115 is characterized in that, in the storage medium according to claim 107, the predetermined shape portion is a projection shape portion.

In order to achieve the second object, the storage medium according to claim 116 is characterized in that, in the storage medium according to claim 107, the predetermined shape portion is a corner shape portion.

In order to achieve the second object, the storage medium according to claim 117 is characterized in that, in the storage medium according to claim 107, the predetermined shape portion is a rib shape portion.

In order to achieve the second object, the storage medium according to claim 118 is for controlling a molded article temperature estimating apparatus for estimating a temperature during a molding process of a molded article having a groove-shaped portion. A storage module storing the control program, wherein the control program has a dividing module that divides the shape of the molded article on a minute surface in a molding process, and a groove-shaped portion from the surface divided by the dividing module. An extraction module for extracting a portion, a temperature prediction module for partially extracting a cross section of the portion extracted by the extraction module and predicting a temperature on a side with and without a groove-shaped portion; Temperature unevenness prediction model that estimates the temperature unevenness of the molded product during the molding process using the temperature of the side with and without the grooved part as the mold temperature of the cavity surface And having a Yuru.

In order to achieve the second object, the storage medium according to claim 119 is the storage medium according to claim 118, wherein the temperature prediction module applies a numerical simulation method (numerical analysis method). It is characterized by performing.

In order to achieve the second object, the storage medium according to claim 120 is the storage medium according to claim 119, wherein the numerical simulation method is a difference method.

In order to achieve the second object, the storage medium according to claim 121 is the storage medium according to claim 119, wherein the numerical simulation method is a finite element method.

In order to achieve the second object, a storage medium according to claim 122 is the storage medium according to claim 119, wherein the numerical simulation method is a finite volume method.

In order to achieve the second object, the storage medium according to claim 123 is the storage medium according to claim 119, wherein the numerical simulation method is a boundary element method.

In order to achieve the second object, the storage medium according to claim 124 is characterized in that, in the storage medium according to claim 118, the molding process is an injection molding process.

In order to achieve the second object, the storage medium according to claim 125 is for controlling a molded article temperature estimating apparatus for estimating a temperature during a molding process of a molded article having a protruding portion. A storage module storing the control program, wherein the control program has a dividing module that divides the shape of the molded article on a minute surface in a molding process, and a groove-shaped portion from the surface divided by the dividing module. An extraction module for extracting a portion, a temperature prediction module for partially extracting a cross section of the portion extracted by the extraction module and predicting a temperature on a side with and without a groove-shaped portion; Temperature unevenness prediction using the temperature of the side with and without the grooved part as the mold temperature of the cavity surface to predict the temperature unevenness of the molded product during the molding process And having a module.

In order to achieve the second object, the storage medium according to claim 126 is the storage medium according to claim 125, wherein the temperature prediction module applies a numerical simulation method (numerical analysis method). It is characterized by performing.

In order to achieve the second object, a storage medium according to claim 127 is the storage medium according to claim 126, wherein the numerical simulation method is a difference method.

In order to achieve the second object, the storage medium according to claim 128 is the storage medium according to claim 126, wherein the numerical simulation method is a finite element method.

In order to achieve the second object, the storage medium according to claim 129 is characterized in that, in the storage medium according to claim 126, the numerical simulation method is a finite volume method.

In order to achieve the second object, a storage medium according to claim 130 is the storage medium according to claim 126, wherein the numerical simulation method is a boundary element method.

In order to achieve the second object, the storage medium according to claim 131 is characterized in that, in the storage medium according to claim 125, the molding process is an injection molding process.

In order to achieve the second object, a storage medium according to claim 132 is for controlling a molded article temperature estimating apparatus for estimating a temperature during a molding process of a molded article having a corner-shaped portion. A storage module storing the control program, wherein the control program has a division module that divides the shape of the molded article by a minute surface in a molding process, and a corner-shaped portion from the surface divided by the division module. An extraction module for extracting a portion, a temperature prediction module for partially extracting a cross section of the portion extracted by the extraction module and predicting temperatures inside and outside a corner shape portion, and a corner obtained by the temperature prediction module Predict the uneven temperature of the part during the molding process by using the temperature inside and outside the shape as the mold temperature on the cavity surface. And having a temperature unevenness prediction module.

In order to achieve the second object, the storage medium according to claim 133 is the storage medium according to claim 132, wherein the temperature prediction module applies a numerical simulation method (numerical analysis method). It is characterized by performing.

In order to achieve the second object, the storage medium according to claim 134 is the storage medium according to claim 133, wherein the numerical simulation method is a difference method.

In order to achieve the second object, a storage medium according to claim 135 is the storage medium according to claim 133, wherein the numerical simulation method is a finite element method.

In order to achieve the second object, the storage medium according to claim 136 is the storage medium according to claim 133, wherein the numerical simulation method is a finite volume method.

In order to achieve the second object, a storage medium according to claim 137 is the storage medium according to claim 133, wherein the numerical simulation method is a boundary element method.

In order to achieve the second object, the storage medium according to claim 138 is characterized in that, in the storage medium according to claim 132, the molding process is an injection molding process.

In order to achieve the second object, a storage medium according to claim 139 is provided.
29. A method for predicting the temperature of a molded article according to claim 29, 37 to 43, 51 to 57, 65 to 71, and a method for predicting the temperature of a molded article.
44 to 50, 58 to 64, and 72 to 78. Based on the temperature history of the molded article obtained by the temperature estimation apparatus for the molded article, the temperature change to the final room temperature is replaced with an equivalent thermal load as needed. And a control program for controlling a molded product deformation amount predicting apparatus for predicting the deformation amount by performing the deformation analysis.

In order to achieve the second object, the storage medium according to claim 140 is characterized in that, in the storage medium according to claim 139, the deformation amount is a warpage amount.

Further, in order to achieve the second object, the storage medium according to claim 141 is characterized in that, based on the temperature history of a molded article having a predetermined shape part, the temperature change to the final room temperature is equivalent as needed. By replacing with thermal load and performing deformation analysis,
A storage medium storing a control program for controlling a deformation amount prediction device of a molded product for predicting a deformation amount, wherein the control program causes the shape of the molded product in a minute process in a molding process of the molded product. A dividing module to be divided, an attribute assigning module for assigning the shape and dimensions of the predetermined shape portion as attributes to the surface divided by the dividing module, and a temperature of a cross section of a portion to which the attribute is assigned by the attribute assigning module A temperature calculation module obtained by a numerical simulation method (numerical analysis method), and a shrinkage strain calculation module for performing a flow simulation by applying the numerical simulation method to the molded article model divided by the division module to obtain shrinkage distortion of each surface. Heat load on the molded product model divided by the division module. A deformation analysis module that performs a deformation analysis by applying a shrinkage strain to each part, and obtains the temperature of the predetermined shape part of each part by the temperature calculation module for all the parts to which the shape of the predetermined shape part is added by the attribute assignment module. At the same time, the shrinkage strain of each minute surface is obtained by the shrinkage strain calculation module, the temperature obtained by the temperature calculation module is converted into an equivalent heat load, and the shrinkage strain obtained by the shrinkage strain calculation module is added to the deformation analysis module. The method is characterized in that the deformation amount of the molded product is predicted by giving it as the analysis condition in.

In order to achieve the second object, the storage medium according to claim 142 is the storage medium according to claim 141, wherein the temperature of the predetermined shape portion obtained by the temperature calculation module is calculated by shrinkage distortion calculation. It is characterized in that it is a boundary condition at the time of calculation in the module.

In order to achieve the second object, a storage medium according to claim 143 is provided.
3. The storage medium according to claim 2, wherein the predetermined shape portion is a groove shape portion.

Further, in order to achieve the second object, the storage medium according to claim 144 is preferably a storage medium according to claim 141 or 141.
3. The storage medium according to claim 2, wherein the predetermined shape portion is a projection shape portion.

In order to achieve the second object, a storage medium according to claim 145 is provided.
3. The storage medium according to claim 2, wherein the predetermined shape portion is a corner shape portion.

In order to achieve the second object, a storage medium according to claim 146 is provided.
3. The storage medium according to claim 2, wherein the predetermined shape portion is a rib shape portion.

In order to achieve the second object, the storage medium according to claim 147 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
It is a floppy disk.

In order to achieve the second object, the storage medium according to claim 148 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
It is a hard disk.

In order to achieve the second object, the storage medium according to claim 149 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
It is characterized by being an optical disk.

In order to achieve the second object, the storage medium according to claim 150 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
It is a magneto-optical disk.

In order to achieve the second object, the storage medium according to claim 151 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
CD-ROM (Compact Disk Read)
Only Memory).

In order to achieve the second object, the storage medium according to claim 152 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
CD-R (Compact Disk Recorder)
ble).

In order to achieve the second object, the storage medium according to claim 153 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
It is a magnetic tape.

In order to achieve the second object, the storage medium according to claim 154 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
It is a nonvolatile memory card.

In order to achieve the second object, the storage medium according to claim 155 is the storage medium according to claims 107 to 145 or 146, wherein the storage medium is
It is a ROM (Read Only Memory) chip.

[0167]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a method and an apparatus for estimating a temperature of a molded article and a method and an apparatus for estimating a deformation amount of a molded article according to the present invention will be described below with reference to the drawings.

(First Embodiment) A method and an apparatus for estimating the temperature of a molded article and a method and an apparatus for estimating a deformation amount according to a first embodiment of the present invention will be described with reference to FIGS.

First, a method and an apparatus for estimating the amount of deformation of a molded product according to the present embodiment will be described with reference to FIGS.

In the present embodiment, the amount of deformation “warpage” of a molded product having a groove or a protrusion as a predetermined shape is described.
Is to be predicted.

FIG. 1 is a block diagram showing the configuration of a molded product deformation amount predicting apparatus according to the present embodiment. In FIG. 1, reference numeral 101 denotes a CPU (Central Processing Unit) which controls the entire apparatus. . Reference numeral 102 denotes a RAM (random access memory), which is a memory for storing various data. 103
Is a ROM (read-only memory), which stores a control program of the apparatus executed by the CPU 101 and the like. An output control unit 104 controls an output unit described later. Reference numeral 105 denotes a display device as output means, and reference numeral 106 denotes a printer as output means. The display device 105 and the printer 106 are connected to the output control unit 1.
04 is controlled by switching. The display device 105 includes:
Information necessary for the simulation is displayed.

The present apparatus comprises a dividing means for dividing the shape of the molded article by a minute plane in a molding process of the molded article having the prescribed shape part, and the shape and size of the prescribed shape part are divided on the surface divided by the dividing means. Attribute assigning means for assigning as an attribute, and temperature for partially obtaining the temperature of the cross section of the section to which the attribute is assigned by the attribute assigning means by a numerical simulation method (numerical analysis method) such as a finite element method, a difference method, and a boundary element method. Calculating means, shrinkage strain calculating means for performing a flow simulation by applying the numerical simulation method to the molded article model divided by the dividing means to obtain shrinkage distortion of each surface, and a molded article divided by the dividing means And a deformation analysis means for performing a deformation analysis by applying a thermal load and shrinkage strain of each part to the model.

Each of these means is stored in the ROM 103
It is composed of software stored inside.

The present apparatus performs a deformation analysis based on the temperature history of the molded article obtained by the apparatus for estimating the temperature of the molded article, by substituting the temperature change to the final room temperature with an equivalent thermal load as needed. Is used to predict a deformation amount such as a warpage amount.

FIG. 2 is a perspective view showing an example of a molded product whose “warpage amount” which is a deformation amount is predicted by the present apparatus. In the figure, reference numeral 201 denotes a molded product made of resin, which is formed by providing a plurality of groove-shaped portions 203 as a plurality of predetermined shaped portions in parallel with each other on the upper surface of a rectangular-plate-shaped molded product main body 202.

FIG. 3 is a diagram showing a state in which the molded article 201 shown in FIG. 1 is modeled for simulation and divided into elements.

FIG. 4 is a diagram corresponding to portion A of FIG. 2 corresponding to portion A of FIG.
A portion (groove-shaped portion 203) is extracted by the applying means,
FIG. Referring to FIG.
Reference numerals a and 401b denote molds for injection-molding molded articles;
Reference numeral 2 denotes a molded product (corresponding to the molded product 201 in FIG. 1) which is injection-molded by the molds 401a and 401b. Also, L
1, L2, L3, H1, and H2 are attributes (dimensions) of the groove portion 203. Further, the boundary condition of the part B is an atmospheric temperature at infinity, and the boundary condition of the part C is an adiabatic condition (a heat flux is zero).

Here, the groove-shaped portion 203 having the cross-sectional shape shown in FIGS. 1 and 4 will be described as an example, and the cross-sectional shape is as shown in FIGS. 5 (a) and 5 (b).
a, 203b, (c), (d), and (e) as shown in FIG.
The present invention can be applied to both cases.

Next, a method for predicting the amount of deformation of a molded product, which is performed by the apparatus for predicting the amount of deformation of a molded product according to the present embodiment, will be described with reference to the flowchart of FIG.

First, in step S601, the shape of the molded article 201 is divided by a minute plane as shown in FIG. 3 by the dividing means. Next, the process proceeds to step S602, in which the attribute imparting means applies the shape and dimensions (L1, L2 in FIG. 4) of the groove-shaped portion 203 to the surface divided in step S601.
2, L3, H1, H2, etc.) as attributes. Next, the process proceeds to step S603, and the process proceeds to step S602.
, The temperature of the groove-shaped portion 203 of each part is partially changed by a numerical simulation method (numerical analysis method) such as a finite element method, a difference method, and a boundary element method for all of the portions where the shape and size of the groove-shaped portion 203 are given as attributes. Accurately obtained by temperature calculation means. Next, proceeding to step S604, the above-described numerical simulation method is applied to the molded article model divided as shown in FIG. 3 in the above-mentioned step S601, whereby the flow simulation (the injection molding process (filling / holding pressure / cooling)) is performed. Simulation of resin behavior)
Is performed, and the contraction distortion of each minute surface is obtained by the contraction distortion calculation means. Next, the process proceeds to step S605, where the equivalent heat load obtained by converting the temperature obtained in step S603 and the respective parts obtained in step S604 are converted into the molded product model divided in step S601 as shown in FIG. After applying the shrinkage strain as an analysis condition, the deformation analysis is performed by the deformation analysis means, and the “warp amount” that is the deformation amount of the molded article 201 is predicted, and then the processing operation is terminated.

Further, by using the temperature of the groove-shaped portion 203 obtained in the step S603 as a boundary condition for obtaining the shrinkage strain in the step S604, the accuracy of temperature prediction during flow can be further improved. ,
As a result, the prediction accuracy of the “warpage amount” that is the deformation amount is improved.

Next, a method and an apparatus for estimating the temperature of a molded product according to the present embodiment will be described with reference to FIGS.

Since the block diagram of the molded article temperature estimating apparatus according to the present embodiment is the same as that of the molded article temperature estimating apparatus according to the first embodiment described above, FIG. I will explain.

In the present apparatus, in a molding process of a molded article having a predetermined shape part, a dividing means for dividing the shape of the molded article by a minute surface, and a part having the predetermined shape part from the surface divided by the dividing means. Extraction means for extraction, temperature prediction means for partially extracting a cross section of a portion extracted by the extraction means and predicting temperatures on the side with and without the predetermined shape portion, and the temperature prediction means Temperature unevenness estimating means for estimating temperature unevenness of a molded article during a molding process by using a temperature of a side having a predetermined shape portion and a temperature of a side having no predetermined shape portion as a mold temperature of a cavity surface.

Each of these means is stored in the ROM 103
It is composed of software stored inside.

Note that the molded article and the cross-sectional model to be subjected to temperature prediction in this embodiment are the same as those shown in FIGS. 1 and 4 in the first embodiment described above. A description will be given using both figures.

FIG. 7 shows molds 401a and 401b and molded article 2 in the molded article temperature estimation method according to the present embodiment.
11 is a flowchart showing a procedure for calculating a temperature distribution at the time of mold release of No. 01.

First, in step S701, the section of the groove-shaped portion 203 of the molded product 201 which has been partially removed is divided into two-dimensional minute elements by the dividing means. Next, step S7
At 02, the molten resin temperature and the cavity surface temperature are given as initial conditions and thermal boundary conditions, respectively. Next, in step S703, an unsteady temperature analysis is performed on the molded product 201 portion divided and modeled by the two-dimensional minute element, and the molded product 201 is analyzed.
The amount of heat that escapes from the surface to the molds 401a and 401b is calculated. Next, in step S704, step S70
The averaged heat flux is obtained by averaging the calorific value calculated in 4 in one cycle time. Next, in step S705,
Using the heat flux obtained in step S704 as a thermal boundary condition for the cavity surface, the temperature of the molds 401a and 401b is analyzed to determine the temperature of the cavity surface. Next, in step S706, the temperature of the cavity surface obtained in step S705 is compared with the temperature of the previous cavity surface to determine whether the temperature of the cavity surface obtained in step S705 is within an allowable error range. Determine whether or not. If the temperature is within the allowable error range, the temperature is determined to be the temperature of the cavity surface, and the calculation of the cross-sectional model is terminated.

On the other hand, if it is determined in step S706 that the error is outside the allowable error range, the process proceeds to step S706.
Proceeding to 707, the temperature of the cavity surface obtained in step S705 is given as the thermal boundary condition of the cavity surface, and then the process returns to step S703.

The mold 4 calculated according to the procedure of FIG.
FIG. 8 shows an example of a temperature distribution when the molds 01a, 401b and the molded article 201 are released from the mold.

The temperature calculation of the cross-sectional model
3 is performed. When the temperature calculation for all the groove portions 203 is completed, the behavior of the resin during the injection molding process is simulated, and the shrinkage strain is calculated as needed. Finally, a deformation analysis is performed based on the shrinkage strain calculated as needed and the bending equivalent load generated by the temperature distribution in the thickness direction of the molded product 201,
The deformation amount such as the “warpage amount” of the molded article 201 is predicted (see FIG. 9).

FIG. 9 is a diagram in which the deformation amount of the molded article 201 is multiplied by a fixed magnification, and the deformed shape is easily understood in addition to the coordinates of the original shape.

As described in detail above, according to the method and apparatus for estimating the temperature of a molded product and the method and apparatus for estimating the amount of deformation of a molded article according to the present embodiment, the same simulation model as in the prior art is used, Since the temperature is predicted by taking into account the shape effects of the portions and the protrusions, the amount of deformation such as the amount of warpage can be accurately predicted.

The apparatus for estimating the temperature of a molded article and the apparatus for estimating the amount of deformation according to the present embodiment use a storage medium (ROM 1 in FIG.
The functions of the present embodiment described above are realized by a computer reading and executing the control program stored in the control program stored in the control program 03). However, the present invention is not limited to this. May include the case where some or all of the actual processing such as an OS (Operating System) running on the computer is performed based on the instruction, and the functions of the above-described embodiment are realized by the processing. Needless to say.

The storage medium for storing the control program includes, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM (Co-ROM).
mpact Disk Read Only Memo
ry), CD-R (Compact Disk Rec)
order, a magnetic tape, a nonvolatile memory card, a ROM chip, or the like.

(Second Embodiment) Next, a second embodiment of the method and apparatus for estimating the temperature of a molded article and the method and apparatus for estimating the amount of deformation according to the present invention will be described with reference to FIGS.

First, a method and an apparatus for estimating the deformation amount of a molded product according to the present embodiment will be described with reference to FIGS.

Since the block configuration of the apparatus for predicting the amount of deformation of a molded product according to the present embodiment is the same as that of FIG. 1 of the above-described first embodiment, description will be made with reference to FIG.

The present embodiment relates to a method and an apparatus for estimating the amount of deformation of a molded product having a rib-shaped portion as a predetermined shaped portion.

[0200] In the present apparatus, a dividing means for dividing the shape of the molded product by a minute plane in a molding process of a molded product having a rib-shaped portion, and an extracting means for extracting the rib-shaped portion from the surface divided by the dividing device. And the temperature of the cross section of the rib-shaped portion extracted by the extraction means is partially
The flow simulation is performed by applying the numerical simulation method to the temperature calculation means obtained by a numerical simulation method (numerical analysis method) such as the difference method and the boundary element method, and the molded article model divided by the dividing means. There is provided a shrinkage strain calculating means for obtaining shrinkage strain, and a deformation analysis means for applying a thermal load and shrinkage strain of each part to the molded article model divided by the dividing means to perform a deformation analysis.

These means are stored in the ROM 103
It is composed of software stored inside.

The present apparatus performs a deformation analysis by replacing a temperature change to room temperature finally with an equivalent thermal load as needed based on the temperature history of the molded article obtained by the molded article temperature predicting apparatus. Is used to predict the amount of deformation.

FIG. 10 is a perspective view showing an example of a molded product whose deformation is predicted by the present apparatus. In the figure, 1
Reference numeral 001 denotes a molded product made of a resin. The molded product main body 1002 has a T-shaped cross section and is provided with a rib-shaped portion 1003 as a predetermined shape portion at the center of the lower surface.

FIG. 11 is a view showing a state where the molded article 1001 shown in FIG. 10 is modeled for simulation and is divided into elements.

FIG. 12 is a diagram showing a section A in FIG. 11 corresponding to the section A including the rib-shaped portion 1003 in FIG. In the figure,
Reference numerals 1201a and 1201b denote dies for injection molding the molded article 1001, and 1202 denotes dies 1201a and 1201b.
(Injection 1001 in FIG. 10)
Corresponding to).

Next, a method for predicting the amount of deformation of a molded product performed by the apparatus for predicting the amount of deformation of a molded product according to the present embodiment will be described with reference to the flowchart of FIG.

First, in step S1301, the cross section of the rib-shaped portion 1003 of the molded product 1001 partially taken out is divided into two-dimensional minute elements by the dividing means as shown in FIG. Next, the process proceeds to step S1302, and the rib-shaped portion 1003 is extracted from the surface divided in step S1301. Next, the process proceeds to step S1303, and the temperature of the cross section of the rib-shaped portion 1003 extracted in step S1302 is partially measured by a numerical simulation method (numerical analysis method) such as a finite element method, a difference method, or a boundary element method. It is obtained with high accuracy by arithmetic means. Next, the process proceeds to step S1304, and the process proceeds to step S13.
In FIG. 01, a flow simulation (injection molding process (filling / holding / cooling)) is performed by applying the numerical simulation method to the molded product model divided as shown in FIG.
Is performed, and the shrinkage strain of each surface is obtained by the shrinkage strain calculating means. Next, step S
Proceeding to 1305, the equivalent thermal load obtained by converting the temperature obtained in step S1303 and the shrinkage strain of each part obtained in step S1304 are added to the molded article model divided in step S1301 as shown in FIG. After the deformation analysis is performed by the deformation analysis means by giving the analysis conditions, and the “warpage amount” that is the deformation amount of the molded article 1001 is predicted, the processing operation is terminated.

The temperature of the rib-shaped portion 1003 obtained in the step S1303 is compared with the temperature in the step S1.
By using the boundary conditions for obtaining the shrinkage strain in 304, the accuracy of temperature prediction during flow can be further improved, and as a result, the accuracy of prediction of the amount of warpage, which is the amount of deformation, is improved.

Next, a method and an apparatus for estimating the temperature of a molded article according to the present embodiment will be described with reference to FIGS.

The block diagram of the molded article temperature estimating apparatus according to the present embodiment is the same as that of FIG. 1 of the first embodiment, and therefore will be described with reference to FIG.

[0211] In the present apparatus, a dividing means for dividing the shape of the molded article by minute surfaces in a molding process of the molded article having the rib-shaped part, and a part having the rib-shaped part from the surface divided by the dividing means. Extraction means for extraction, temperature prediction means for partially extracting a cross section of a portion extracted by the extraction means and predicting temperatures on the side with and without the predetermined shape portion, and the temperature prediction means Temperature unevenness estimating means for estimating temperature unevenness of a molded article during a molding process by using a temperature of a side having a predetermined shape portion and a temperature of a side having no predetermined shape portion as a mold temperature of a cavity surface.

Each of these means is stored in the ROM 103
It is composed of software stored inside.

The molded product and the cross-sectional model for which the temperature is to be predicted in the present embodiment are the same as those shown in FIGS. 10 and 11 described above, and therefore will be described with reference to both drawings. I do.

FIG. 14 is a flowchart showing a procedure for calculating the temperature distribution of the molds 1201a and 1201b and the molded article 1202 at the time of mold release in the molded article temperature estimation method according to the present embodiment.

First, in step S1401, the cross section of the rib-shaped portion 1003 of the molded article 1001 which has been partially removed is divided into two-dimensional microelements by the dividing means. Next, in step S1402, the molten resin temperature and the temperature of the cavity surface are given as initial conditions and thermal boundary conditions, respectively. Next, in step S1403, an unsteady temperature analysis is performed on the molded product 1001 portion divided and modeled by the two-dimensional minute elements, and the molds 1201a, 1201
Calculate the amount of heat that escapes to 1b. Next, step S140
In step 4, the heat quantity calculated in step S1404 is averaged over one cycle to obtain an average heat flux.
Next, in step S1405, step S1404 is performed.
Using the heat flux obtained in (1) as the thermal boundary condition for the cavity surface, the temperature of the molds 1201a and 1201b is analyzed to determine the temperature of the cavity surface. Next, step S1
In step 406, the temperature of the cavity surface obtained in step S1405 is compared with the temperature of the previous cavity surface to determine whether the temperature of the cavity surface obtained in step S1405 is within an allowable error range. I do. If the temperature is within the allowable error range, the temperature is determined to be the temperature of the cavity surface, and the calculation of the cross-sectional model is terminated.

On the other hand, if it is determined in step S1406 that the temperature exceeds the allowable error range, the flow advances to step S1407 to provide the temperature of the cavity surface obtained in step S1405 as the thermal boundary condition of the cavity surface. After that, the process returns to the step S1403.

FIG. 15 shows an example of the temperature distribution at the time of releasing the molds 1201a, 1201b and the molded product 1202 calculated according to the procedure shown in FIG. The temperature calculation of the cross-sectional model is performed for all the rib-shaped portions 1003. When the temperature calculation of all the rib-shaped portions 1003 is completed, the behavior of the resin in the injection molding process is simulated, and the shrinkage strain is calculated as needed (see FIG. 16).

Finally, based on the shrinkage strain calculated as needed and the bending equivalent load generated by the temperature distribution in the plate thickness direction, deformation analysis is performed by deformation analysis means to obtain a molded product 1.
The “warpage amount” which is the deformation amount of 002 is predicted (FIG. 17).
reference).

FIG. 16 is a graph showing the distribution of shrinkage strain of the molded article 1001 by contour lines of shrinkage strain distribution. FIG.
It is the figure which made the deformed shape easy to understand in addition to the coordinate of the original shape.

According to the method and the apparatus for estimating the temperature of the molded article and the method and the apparatus for estimating the deformation of the molded article according to the present embodiment, the same simulation model as that of the related art is used, and the shape effect of the rib-shaped portion, which has not been taken into account, is taken into account. Since temperature prediction is performed to predict the amount of warpage, which is the amount of deformation of the molded product,
The “warpage amount” can be accurately predicted.

Note that other configurations and operations in this embodiment are the same as those in the above-described first embodiment.
The description is omitted.

(Third Embodiment) Next, a third embodiment of the method and apparatus for estimating the temperature of a molded article and the method and apparatus for estimating the amount of deformation according to the present invention will be described with reference to FIGS.

First, a method and an apparatus for estimating the amount of deformation of a molded product according to the present embodiment will be described with reference to FIGS.

The block configuration of the apparatus for estimating the amount of deformation of a molded product according to this embodiment is the same as that of FIG. 1 of the above-described first embodiment, and will be described with reference to FIG.

The present embodiment relates to a method and an apparatus for estimating the deformation of a molded product having a corner portion as a predetermined shape portion.

The present apparatus comprises a dividing means for dividing the shape of a molded article by a minute plane in a molding process of a molded article having a corner-shaped part, and an extracting means for extracting a corner-shaped part from the surface divided by the dividing means. Temperature calculating means for partially obtaining the temperature of the cross section of the corner portion extracted by the extracting means by a numerical simulation method (numerical analysis method) such as a finite element method, a difference method, and a boundary element method;
Applying the numerical simulation method to the molded article model divided by the dividing means to perform a flow simulation to obtain shrinkage distortion of each surface; and applying a thermal load to the molded article model divided by the dividing means. And a deformation analyzing means for performing a deformation analysis by giving a contraction strain of each part.

Each of these means is stored in the ROM 103
It is composed of software stored inside.

The present apparatus performs a deformation analysis by substituting an equivalent thermal load for the temperature change up to room temperature as needed based on the temperature history of the molded article obtained by the molded article temperature predicting apparatus. Is used to predict the amount of deformation.

FIG. 18 is a perspective view showing an example of a molded product whose deformation is predicted by the present apparatus. In the figure, 1
Reference numeral 801 denotes a molded product made of resin, which is a molded product main body 1802 having an inverted U-shaped cross section and having corner-shaped portions 1803 which are predetermined shapes on both sides thereof.

FIG. 19 is a view showing a state where the molded article 1801 shown in FIG. 18 is modeled for simulation and is divided into elements.

FIG. 20 is a sectional view of the corner-shaped portion 180 shown in FIG.
FIG. 20 is a diagram showing a section A of FIG. 19 corresponding to the section A which is 3, which is extracted by the extracting means, and which is shown in cross section. In the figure, reference numerals 2001a and 2001b denote dies for injection-molding a molded product 1801, and 2002 denotes dies 2001a and 200.
1b (the molded product 18 in FIG. 18).
01).

Next, a method for predicting the amount of deformation of a molded product performed by the apparatus for predicting the amount of deformation of a molded product according to the present embodiment will be described with reference to the flowchart of FIG.

First, in step S2101, the section of the corner-shaped portion 1803 of the molded product 1801 that has been partially removed is divided into two-dimensional minute elements by the dividing means as shown in FIG. Next, the process proceeds to step S2102, and a corner-shaped portion 1803 is extracted from the surface divided in step S2101. Next, step S210
3, the temperature of the cross section of the corner portion 1803 extracted in step S2102 is partially corrected by the temperature calculation means by a numerical simulation method (numerical analysis method) such as a finite element method, a difference method, or a boundary element method. Ask often. Next, proceeding to step S2104, the flow simulation (injection molding process (filling / holding pressure / cooling)) is performed by applying the numerical simulation method to the molded article model divided as shown in FIG. (Simulation of resin behavior), and shrinkage strain of each surface is obtained by shrinkage strain calculation means. next,
Proceeding to step S2105, the process proceeds to step S2101.
In FIG. 19, an equivalent thermal load obtained by converting the temperature obtained in step S2103 and the shrinkage strain of each part obtained in step S2104 are given as analysis conditions to the molded article model divided as shown in FIG. After the deformation analysis is performed to predict the “warpage amount” that is the deformation amount of the molded article 1801, the processing operation ends.

Further, by using the temperature of the corner-shaped portion 1803 obtained in step S2103 as a boundary condition for obtaining shrinkage strain in step S2104, the accuracy of temperature prediction during flow can be further improved. As a result, the prediction accuracy of the “warpage amount” as the deformation amount is improved.

Next, a method and an apparatus for estimating the temperature of a molded product according to the present embodiment will be described with reference to FIGS.

The block diagram of the molded article temperature estimating apparatus according to the present embodiment is the same as that of FIG. 1 of the above-described first embodiment.

In the present apparatus, a dividing means for dividing the shape of the molded article by minute surfaces in a molding process of a molded article having a corner-shaped part, and a part having a corner-shaped part from the surface divided by the dividing means. Extraction means for extracting,
Temperature estimating means for partially extracting a cross section of the portion extracted by the extracting means and estimating temperatures inside and outside the corner-shaped portion; and inside and outside the corner shaped portion obtained by the temperature estimating means. Temperature unevenness estimating means for estimating the temperature unevenness of the molded article during the molding process using the temperature as the mold temperature of the cavity surface.

Each of these means is stored in the ROM 103
It is composed of software stored inside.

The molded article and the cross-sectional model for which the temperature is to be predicted in the present embodiment are the same as those shown in FIGS. 18 and 19 described above. I do.

FIG. 22 is a flowchart showing a procedure for calculating the temperature distribution at the time of releasing the molds 2001a and 2001b and the molded product 1801 in the molded product temperature estimation method according to the present embodiment.

First, in step S2201, the cross section of the corner-shaped portion 1803 of the molded product 1801 that has been partially removed is divided into two-dimensional minute elements by the dividing means. next,
In step S2202, the molten resin temperature and the temperature of the cavity surface are given as initial conditions and thermal boundary conditions, respectively. Next, in step S2203, an unsteady temperature analysis is performed on the part 1801 of the molded product 1801 divided and modeled by the two-dimensional minute element, and the molds 2001a and 20012 are removed from the surface of the molded product 1801.
Calculate the amount of heat that escapes to 001b. Next, step S2
At 204, the heat quantity calculated at the step S2203 is averaged over one cycle to obtain an average heat flux. Next, at step S2205, at step S22
Using the heat flux obtained in step 04 as the thermal boundary condition of the cavity surface, the temperature of the molds 2001a and 2001b is analyzed to determine the temperature of the cavity surface. Next, step S
In step 2206, the temperature of the cavity surface obtained in step S2205 is compared with the temperature of the previous cavity surface to determine whether the temperature of the cavity surface obtained in step S2205 is within an allowable error range. I do. If it is within the allowable error range, the temperature is determined to be the temperature of the cavity surface, and the calculation of the cross-sectional model is terminated.

On the other hand, if it is determined in step S2206 that the temperature exceeds the allowable error range, the flow advances to step S2207 to give the temperature of the cavity surface obtained in step S2205 as the thermal boundary condition of the cavity surface. After that, the process returns to step S2203.

FIG. 23 shows an example of the temperature distribution at the time of release from the molds 2001a and 2001b and the molded product 1801 calculated according to the procedure shown in FIG. The temperature calculation of the cross-sectional model is performed for all corner-shaped portions 1803.
When the temperature calculation for all the corner portions 1803 is completed, the behavior of the resin in the injection molding process is simulated, and the shrinkage strain is calculated as needed (see FIG. 24).

Finally, based on the shrinkage strain calculated as needed and the bending equivalent load generated due to the temperature distribution in the thickness direction, deformation analysis is performed by deformation analysis means to obtain a molded product 1.
The “warp amount” that is the deformation amount of the 801 is predicted (FIG. 25).
reference).

FIG. 24 is a diagram showing the distribution of the shrinkage strain of the molded article 1801 by the contour lines of the shrinkage strain distribution, and FIG.
It is the figure which made the deformed shape easy to understand in addition to the coordinate of the original shape.

According to the method and the apparatus for estimating the temperature of the molded article and the method and the apparatus for estimating the deformation of the molded article according to the present embodiment, the same simulation model as the conventional one is used, and the shape effect of the rib-shaped part which has not been taken into account is taken into account. Since temperature prediction is performed to predict the amount of warpage, which is the amount of deformation of the molded product,
The “warpage amount” can be accurately predicted.

Note that the other configuration and operation of this embodiment are the same as those of the above-described first embodiment.
The description is omitted.

[0248]

As described above in detail, according to the method and apparatus for estimating the temperature of a molded article and the method and apparatus for estimating the deformation of a molded product according to the present invention, the same simulation model as in the prior art is used. Predict the temperature by taking into account the shape effect of the predetermined shape part such as the protrusion shape part, the rib shape part or the corner shape part, and predict the deformation amount such as the "warpage amount" of the molded product, so that the prediction of the deformation amount is accurate I can do it.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a molded product deformation amount prediction device and a temperature prediction device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a molded product whose deformation amount and temperature are predicted by the molded product deformation amount prediction device and the temperature prediction device according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a state in which the molded article shown in FIG. 2 is modeled for simulation and is divided into elements.

FIG. 4 is a diagram showing a section A of FIG. 3 corresponding to the section A which is the groove-shaped portion of FIG.

FIG. 5 is a diagram for explaining types of a predetermined shape portion in a molded product whose deformation amount and temperature are predicted by the molded product deformation amount prediction device and the temperature prediction device according to the first embodiment of the present invention. is there.

FIG. 6 is a flowchart illustrating a procedure of a molded product deformation amount prediction method performed by the molded product deformation amount prediction device according to the first embodiment of the present invention.

FIG. 7 is a flowchart showing a procedure for calculating a temperature distribution at the time of mold and mold release in the method for predicting temperature of a molded product according to the first embodiment of the present invention.

8 is a diagram showing the distribution of shrinkage strain in the molded article shown in FIG.

FIG. 9 is a view showing a deformed shape of the molded product shown in FIG. 2;

FIG. 10 is a perspective view showing an example of a molded product whose deformation amount and temperature are predicted by a molded product deformation amount prediction device and a temperature prediction device according to a second embodiment of the present invention.

11 is a diagram showing a state in which the molded article shown in FIG. 10 is modeled for simulation and is divided into elements.

FIG. 12 is a diagram showing a section A of FIG. 11 corresponding to the section A which is the rib-shaped portion of FIG.

FIG. 13 is a flowchart illustrating a procedure of a molded article deformation amount prediction method performed by the molded article deformation amount prediction device according to the second embodiment of the present invention.

FIG. 14 is a flowchart showing a procedure for calculating a temperature distribution at the time of releasing a mold and a molded product in the method for predicting the temperature of a molded product according to the second embodiment of the present invention.

15 is a diagram showing temperature distribution contours in a cross section of a rib-shaped portion when the mold and the molded product shown in FIG. 12 are released from the mold by temperature distribution contour lines.

16 is a diagram showing the distribution of shrinkage strain of the molded article shown in FIG.

FIG. 17 is a view showing a deformed shape of the molded product shown in FIG. 10;

FIG. 18 is a perspective view showing an example of a molded product whose deformation amount and temperature are predicted by the molded product deformation amount prediction device and the temperature prediction device according to the third embodiment of the present invention.

FIG. 19 is a diagram showing a state in which the molded article shown in FIG. 18 is modeled for simulation and is divided into elements.

20 is a diagram showing a section A of FIG. 19 corresponding to the section A which is a corner-shaped portion of FIG.

FIG. 21 is a flowchart illustrating a procedure of a molded article deformation amount prediction method performed by the molded article deformation amount prediction apparatus according to the third embodiment of the present invention.

FIG. 22 is a flowchart illustrating a procedure for calculating a temperature distribution at the time of mold release of a mold and a molded product in the molded product temperature prediction method according to the third embodiment of the present invention.

FIG. 23 is a diagram showing the temperature distribution state in the cross section of the corner-shaped portion when the mold and the molded product shown in FIG.

FIG. 24 is a diagram showing the distribution of shrinkage strain of the molded article shown in FIG.

25 is a view showing a deformed shape of the molded product shown in FIG.

[Explanation of symbols]

 101 CPU 102 RAM (random access memory) 103 ROM (read only memory) 104 output control means 105 display device (output means) 106 printer (output means)

Claims (155)

[Claims] In a molding process of a molded article having a predetermined shape portion, a dividing step of dividing the shape of the molded article by minute surfaces, and extracting a portion having the predetermined shape portion from the surfaces divided by the dividing step. An extraction step, a temperature prediction step of partially extracting a cross section of a portion extracted by the extraction step, and predicting a temperature of a side having the predetermined shape portion and a temperature of a side not having the predetermined shape portion, and a predetermined shape obtained by the temperature prediction step. A temperature unevenness prediction step of predicting temperature unevenness of the molded article during the molding process using the temperature of the side with and without the part as the mold temperature of the cavity surface. 2. The method according to claim 1, wherein the temperature predicting step is performed by applying a numerical simulation method (numerical analysis method). 3. The method according to claim 2, wherein the numerical simulation method is a difference method. 4. The method according to claim 2, wherein the numerical simulation method is a finite element method. 5. The method according to claim 2, wherein the numerical simulation method is a finite volume method. 6. The method according to claim 2, wherein the numerical simulation method is a boundary element method. 7. The method according to claim 1, wherein the molding process is an injection molding process. 8. The method according to claim 1, wherein the predetermined shape portion is a groove shape portion. 9. The method according to claim 1, wherein the predetermined shape portion is a projection shape portion. 10. The method according to claim 1, wherein the predetermined shape portion is a corner shape portion. 11. The method according to claim 1, wherein the predetermined shape portion is a rib shape portion. 12. A dividing means for dividing a shape of a molded article by a minute surface in a molding process of a molded article having a prescribed shape portion, and extracting a portion having a prescribed shape portion from the surface divided by the dividing means. Extracting means; temperature predicting means for partially extracting a cross section of a portion extracted by the extracting means to predict the temperature on the side with and without the predetermined shape portion; and a predetermined shape obtained by the temperature predicting means. Temperature unevenness estimating means for estimating temperature unevenness of a molded product during a molding process using a temperature of a side having a portion and a temperature of a side having no portion as a mold temperature of a cavity surface. 13. The apparatus for predicting the temperature of a molded product according to claim 12, wherein said temperature predicting means performs a numerical simulation method (numerical analysis method). 14. The apparatus according to claim 13, wherein the numerical simulation method is a difference method. 15. An apparatus according to claim 13, wherein said numerical simulation method is a finite element method. 16. The apparatus according to claim 13, wherein the numerical simulation method is a finite volume method. 17. The apparatus according to claim 13, wherein the numerical simulation method is a boundary element method. 18. The apparatus according to claim 12, wherein the molding process is an injection molding process. 19. The apparatus according to claim 12, wherein the predetermined shape is a groove. 20. The apparatus for predicting the temperature of a molded product according to claim 12, wherein said predetermined shape portion is a projection shape portion. 21. The apparatus according to claim 12, wherein the predetermined shape portion is a corner shape portion. 22. The apparatus according to claim 12, wherein the predetermined shape portion is a rib shape portion. 23. A dividing step of dividing the shape of the molded article by a minute surface in a molding process of the molded article having the groove-shaped part, and extracting a part having the groove-shaped part from the surface divided by the dividing step. An extraction step, a temperature prediction step of partially extracting a cross section of a portion extracted by the extraction step and predicting a temperature on a side with and without a groove shape part, and a groove shape part obtained by the temperature prediction step A temperature unevenness prediction step of estimating temperature unevenness of the molded article during the molding process using the temperature of the side with and without the mold as the mold temperature of the cavity surface. 24. The method according to claim 23, wherein the temperature predicting step is performed by applying a numerical simulation method (numerical analysis method). 25. The method according to claim 24, wherein the numerical simulation method is a difference method. 26. The method according to claim 24, wherein the numerical simulation method is a finite element method. 27. The method according to claim 24, wherein the numerical simulation method is a finite volume method. 28. The method according to claim 24, wherein the numerical simulation method is a boundary element method. 29. The method according to claim 23, wherein the molding process is an injection molding process. 30. A dividing means for dividing a shape of a molded product by a minute surface in a molding process of a molded product having a groove-shaped portion, and extracting a portion having a groove-shaped portion from the surface divided by the dividing device. Extraction means, temperature prediction means for partially extracting the cross section of the portion extracted by the extraction means and predicting the temperature on the side with and without the groove shape part, and the groove shape part obtained by the temperature prediction means A temperature unevenness estimating means for estimating temperature unevenness of a molded article during a molding process using a temperature of a side having and a side having no cavity as a mold temperature of a cavity surface. 31. The apparatus for predicting the temperature of a molded product according to claim 30, wherein said temperature predicting means is performed by applying a numerical simulation method (numerical analysis method). 32. An apparatus according to claim 31, wherein said numerical simulation method is a difference method. 33. The apparatus according to claim 31, wherein the numerical simulation method is a finite element method. 34. The apparatus according to claim 31, wherein the numerical simulation method is a finite volume method. 35. The apparatus according to claim 31, wherein the numerical simulation method is a boundary element method. 36. The apparatus according to claim 30, wherein the molding process is an injection molding process. 37. A dividing step of dividing the shape of the molded article on a minute surface in a molding process of the molded article having a projection-shaped part, and extracting a part having a groove-shaped part from the surface divided by the dividing step. An extraction step, a temperature prediction step of partially extracting a cross section of a portion extracted by the extraction step, and predicting a temperature on a side with and without a groove-shaped portion; and a groove-shaped portion obtained by the temperature prediction step. A temperature unevenness prediction step of estimating temperature unevenness of the molded article during the molding process using the temperature of the side with and without the mold as the mold temperature of the cavity surface. 38. The method according to claim 37, wherein the temperature predicting step is performed by applying a numerical simulation method (numerical analysis method). 39. The method according to claim 38, wherein the numerical simulation method is a difference method. 40. The method according to claim 38, wherein the numerical simulation method is a finite element method. 41. The method according to claim 38, wherein the numerical simulation method is a finite volume method. 42. A method according to claim 38, wherein said numerical simulation method is a boundary element method. 43. The method according to claim 37, wherein the molding process is an injection molding process. 44. A dividing means for dividing the shape of the molded article on a minute surface in a molding process of the molded article having a projection-shaped part, and extracting a portion having a groove-shaped part from the surface divided by the dividing means. Extraction means, temperature prediction means for partially extracting the cross section of the portion extracted by the extraction means and predicting the temperature on the side with and without the groove shape part, and the groove shape part obtained by the temperature prediction means A temperature unevenness estimating means for estimating temperature unevenness of a molded article during a molding process using a temperature of a side having and a side having no cavity as a mold temperature of a cavity surface. 45. An apparatus according to claim 44, wherein said temperature predicting means performs a numerical simulation method (numerical analysis method). 46. An apparatus according to claim 45, wherein said numerical simulation method is a difference method. 47. The apparatus according to claim 45, wherein the numerical simulation method is a finite element method. 48. The apparatus according to claim 45, wherein the numerical simulation method is a finite volume method. 49. The apparatus according to claim 45, wherein the numerical simulation method is a boundary element method. 50. The apparatus according to claim 44, wherein the molding process is an injection molding process. 51. A dividing step of dividing a shape of a molded product by a minute surface in a molding process of a molded product having a corner-shaped portion, and extracting a portion having a corner-shaped portion from the surface divided by the dividing step. An extraction step, a temperature prediction step of partially extracting a cross section of a portion extracted by the extraction step and predicting temperatures inside and outside the corner shape portion, and inside the corner shape portion obtained by the temperature prediction step A temperature unevenness prediction step of predicting temperature unevenness of the molded article during the molding process using the outside temperature as the mold temperature of the cavity surface. 52. The method according to claim 51, wherein the temperature predicting step is performed by applying a numerical simulation method (numerical analysis method). 53. The method according to claim 52, wherein the numerical simulation method is a difference method. 54. The method according to claim 53, wherein the numerical simulation method is a finite element method. 55. The method according to claim 53, wherein the numerical simulation method is a finite volume method. 56. The method according to claim 53, wherein the numerical simulation method is a boundary element method. 57. The method according to claim 51, wherein the molding process is an injection molding process. 58. A dividing means for dividing a shape of a molded article by a minute surface in a molding process of a molded article having a corner-shaped part, and extracting a part having a corner-shaped part from the surface divided by the dividing means. Extraction means, temperature prediction means for partially extracting a cross section of a portion extracted by the extraction means and predicting temperatures inside and outside the corner shape portion, and inside the corner shape portion obtained by the temperature prediction means And a temperature unevenness estimating means for estimating temperature unevenness of the molded article during the molding process using the outside temperature as the mold temperature of the cavity surface. 59. The apparatus according to claim 58, wherein said temperature estimating means performs a numerical simulation method (numerical analysis method). 60. An apparatus according to claim 59, wherein said numerical simulation method is a difference method. 61. An apparatus according to claim 59, wherein said numerical simulation method is a finite element method. 62. An apparatus according to claim 59, wherein said numerical simulation method is a finite volume method. 63. The apparatus according to claim 59, wherein the numerical simulation method is a boundary element method. 64. The apparatus according to claim 58, wherein the molding process is an injection molding process. 65. A dividing step of dividing the shape of the molded article by a minute surface in a molding process of the molded article having a rib-shaped part, and extracting a part having the rib-shaped part from the surface divided by the dividing step. An extraction step, a temperature prediction step of partially extracting a cross section of a portion extracted by the extraction step, and predicting a temperature on a side with and without a rib shape portion, and a rib shape portion obtained by the temperature prediction step. A temperature unevenness prediction step of estimating temperature unevenness of the molded article during the molding process using the temperature of the side with and without the mold as the mold temperature of the cavity surface. 66. The method according to claim 65, wherein the temperature predicting step is performed by applying a numerical simulation method (numerical analysis method). 67. The method according to claim 66, wherein the numerical simulation method is a difference method. 68. The method according to claim 66, wherein the numerical simulation method is a finite element method. 69. The method according to claim 66, wherein the numerical simulation method is a finite volume method. 70. The method according to claim 66, wherein the numerical simulation method is a boundary element method. 71. The method according to claim 65, wherein the molding process is an injection molding process. 72. A dividing means for dividing the shape of the molded article on a minute surface in a molding process of the molded article having a rib-shaped part, and extracting a portion having the rib-shaped part from the surface divided by the dividing means. Extraction means, temperature prediction means for partially extracting the cross section of the portion extracted by the extraction means and predicting the temperature on the side with and without the rib-shaped portion,
Temperature unevenness estimating means for estimating temperature unevenness of a molded article during a molding process, using the temperature on the side with and without the rib-shaped portion obtained by the temperature estimating means as the mold temperature on the cavity surface. Temperature prediction device for molded products. 73. The apparatus for predicting the temperature of a molded article according to claim 72, wherein said temperature predicting means is performed by applying a numerical simulation method (numerical analysis method). 74. The apparatus according to claim 73, wherein the numerical simulation method is a difference method. 75. An apparatus according to claim 73, wherein said numerical simulation method is a finite element method. 76. An apparatus according to claim 73, wherein said numerical simulation method is a finite volume method. 77. An apparatus according to claim 73, wherein said numerical simulation method is a boundary element method. 78. The apparatus according to claim 72, wherein the molding process is an injection molding process. 79. Claims 1-11, 23-29, 37-
43, 51 to 57, 65 to 71, and a method for predicting the temperature of a molded article.
58-64, 72-78, based on the temperature history of the molded article obtained by the temperature prediction apparatus of the molded article, the temperature change to the final room temperature is replaced with an equivalent thermal load as needed, and the deformation analysis is performed. A method for predicting a deformation amount of a molded product, wherein the method predicts a deformation amount. 80. The method according to claim 79, wherein the deformation amount is a warpage amount. 81. Claims 1-11, 23-29, 37-
43, 51 to 57, 65 to 71, and a method for predicting the temperature of a molded article.
58-64, 72-78, based on the temperature history of the molded article obtained by the temperature prediction apparatus of the molded article, the temperature change to the final room temperature is replaced with an equivalent thermal load as needed, and the deformation analysis is performed. An apparatus for predicting the amount of deformation of a molded product, wherein the apparatus predicts the amount of deformation. 82. The apparatus according to claim 81, wherein said deformation amount is a warpage amount. 83. A dividing step of dividing the shape of the molded article on a minute surface in a molding process of the molded article having the prescribed shape portion, and assigning the shape and size of the prescribed shape portion to the divided surface by the dividing step. An attribute assigning step of assigning as an attribute, a temperature calculating step of partially obtaining a temperature of a cross section of a portion to which an attribute is assigned by the attribute assigning step by a numerical simulation method (numerical analysis method),
By applying the numerical simulation method to the molded article model divided by the dividing step, a flow simulation is performed to calculate shrinkage distortion of each surface, and a shrinkage distortion calculating step is performed. A deformation analysis step of performing a deformation analysis by applying a load and shrinkage strain of each part, and performing a temperature calculation step on the temperature of the predetermined shape part of each part by the temperature calculation step for all the parts to which the shape of the predetermined shape part is provided by the attribute providing step. At the same time, the shrinkage strain of each minute surface is obtained by the shrinkage strain calculation step, the temperature obtained by the temperature calculation step is converted into an equivalent heat load, and the shrinkage strain obtained by the shrinkage strain calculation step is deformed. It is specially designed to predict the amount of deformation of a molded product by giving it as analysis conditions in the analysis step. Deformation amount prediction method of a molded article to be. 84. The method according to claim 83, wherein the temperature of the predetermined shape portion obtained in the temperature calculation step is used as a boundary condition in the calculation in the shrinkage distortion calculation step. 85. The method according to claim 83, wherein the predetermined shape portion is a groove shape portion. 86. The method according to claim 83, wherein the predetermined shape portion is a projection shape portion. 87. The method according to claim 83, wherein the predetermined shape portion is a corner shape portion. 88. The method according to claim 83, wherein the predetermined shape portion is a rib shape portion. 89. A method according to claim 83, wherein said numerical simulation method is a difference method. 90. The method according to claim 83, wherein said numerical simulation method is a finite element method. 91. The method according to claim 83, wherein said numerical simulation method is a finite volume method. 92. The method according to claim 83, wherein said numerical simulation method is a boundary element method. 93. The method according to claim 83, wherein the molding process is an injection molding process. 94. The method according to claim 83, wherein the deformation amount is a warpage amount. 95. A dividing means for dividing a shape of a molded article by a minute surface in a molding process of a molded article having a prescribed shape portion, and assigning the shape and size of the prescribed shape portion to the surface divided by the dividing means. Attribute assigning means for assigning as
A temperature calculating means for partially obtaining the temperature of the cross section of the section to which the attribute is provided by the attribute providing means by a numerical simulation method (numerical analysis method); and applying the numerical simulation method to the molded article model divided by the dividing means. A shrinkage strain calculation means for performing flow simulation to obtain shrinkage strain of each surface and a deformation analysis means for performing a deformation analysis by applying a thermal load and shrinkage strain of each part to the molded product model divided by the division means. With respect to all of the portions provided with the shape of the predetermined shape portion by the attribute providing device, the temperature of the predetermined shape portion of each portion is obtained by the temperature calculation device, and the shrinkage strain of each minute surface is obtained by the shrinkage strain calculation device at the same time. Converting the temperature obtained by the temperature calculating means into an equivalent thermal load, and adding the shrinkage obtained by the shrinkage strain calculating means. By giving himself as the analysis conditions in the deformation analysis means, the molded article of the deformation amount prediction apparatus characterized by predicting the amount of deformation of the molded article. 96. The apparatus for predicting the amount of deformation of a molded product according to claim 95, wherein the temperature of said predetermined shape portion obtained by said temperature calculation means is used as a boundary condition for calculation by the shrinkage distortion calculation means. 97. The apparatus according to claim 95, wherein the predetermined shape portion is a groove shape portion. 98. The apparatus according to claim 95, wherein the predetermined shape portion is a projection shape portion. 99. The apparatus according to claim 95, wherein the predetermined shape portion is a corner shape portion. 100. The apparatus according to claim 95, wherein the predetermined shape portion is a rib shape portion. 101. The apparatus according to claim 95, wherein the numerical simulation method is a difference method. 102. The apparatus according to claim 95, wherein the numerical simulation method is a finite element method. 103. The apparatus according to claim 95, wherein the numerical simulation method is a finite volume method. 104. The apparatus according to claim 95, wherein the numerical simulation method is a boundary element method. 105. The apparatus according to claim 95, wherein the molding process is an injection molding process. 106. The apparatus according to claim 95, wherein said deformation amount is a warpage amount. 107. A storage medium storing a control program for controlling a temperature predicting device for a molded article for predicting a temperature during a molding process of a molded article having a predetermined shape portion, wherein the control program is configured to execute the molding process. A dividing module that divides the shape of the molded product on a minute surface,
An extraction module for extracting a portion having a predetermined shape portion from a surface divided by the division module; and extracting a part of a cross section of the portion extracted by the extraction module to obtain a temperature of a side having the predetermined shape portion and a temperature of a side having no predetermined shape portion. Temperature prediction module, and a temperature non-uniformity prediction module that predicts temperature non-uniformity of a molded article during a molding process using the temperature of the side having and without the predetermined shape portion obtained by the temperature prediction module as the mold temperature of the cavity surface And a storage medium comprising: 108. The storage medium according to claim 107, wherein said temperature prediction module is performed by applying a numerical simulation method (numerical analysis method). 109. The storage medium according to claim 108, wherein said numerical simulation method is a difference method. 110. The storage medium according to claim 108, wherein said numerical simulation method is a finite element method. 111. The storage medium according to claim 108, wherein said numerical simulation method is a finite volume method. 112. The storage medium according to claim 108, wherein said numerical simulation method is a boundary element method. 113. The storage medium according to claim 107, wherein said molding process is an injection molding process. 114. The storage medium according to claim 107, wherein said predetermined shape portion is a groove shape portion. 115. The storage medium according to claim 107, wherein said predetermined shape portion is a projection shape portion. 116. The storage medium according to claim 107, wherein said predetermined shape portion is a corner shape portion. 117. The storage medium according to claim 107, wherein said predetermined shape portion is a rib shape portion. 118. A storage medium storing a control program for controlling a molded article temperature prediction device for predicting a temperature during a molding process of a molded article having a groove-shaped portion,
The control program includes a dividing module that divides the shape of the molded product on a minute surface in a molding process, an extracting module that extracts a portion having a groove shape from the surface divided by the dividing module, and an extracting module. A temperature prediction module for partially extracting the cross section of the extracted portion and predicting the temperature on the side with and without the groove-shaped portion, and the temperature on the side with and without the groove-shaped portion obtained by the temperature prediction module A temperature non-uniformity prediction module for predicting temperature non-uniformity of a molded article during a molding process using the temperature as a mold temperature of a cavity surface. 119. The storage medium according to claim 118, wherein said temperature prediction module is performed by applying a numerical simulation method (numerical analysis method). 120. The storage medium according to claim 119, wherein said numerical simulation method is a difference method. 121. The storage medium according to claim 119, wherein said numerical simulation method is a finite element method. 122. The storage medium according to claim 119, wherein said numerical simulation method is a finite volume method. 123. The storage medium according to claim 119, wherein said numerical simulation method is a boundary element method. 124. The storage medium according to claim 118, wherein said molding process is an injection molding process. 125. A storage medium storing a control program for controlling a temperature predicting device for a molded product for predicting a temperature during a molding process of a molded product having a projection-shaped portion, wherein the control program includes: A dividing module that divides the shape of the molded product on a minute surface,
An extraction module for extracting a portion having a groove-shaped portion from the surface divided by the division module, and partially extracting a cross section of the portion extracted by the extraction module to adjust the temperature on the side with and without the groove-shaped portion. A temperature prediction module for predicting, and a temperature non-uniformity prediction module for predicting temperature non-uniformity of a molded product during a molding process using the temperature of the side with and without the groove-shaped portion obtained by the temperature prediction module as the mold temperature of the cavity surface. A storage medium characterized by having: 126. The storage medium according to claim 125, wherein said temperature prediction module is performed by applying a numerical simulation method (numerical analysis method). 127. The storage medium according to claim 126, wherein said numerical simulation method is a difference method. 128. The storage medium according to claim 126, wherein said numerical simulation method is a finite element method. 129. The storage medium according to claim 126, wherein said numerical simulation method is a finite volume method. 130. The storage medium according to claim 126, wherein said numerical simulation method is a boundary element method. 131. The storage medium according to claim 125, wherein said molding process is an injection molding process. 132. A storage medium storing a control program for controlling a temperature predicting device for a molded product for predicting a temperature during a molding process of a molded product having a corner-shaped portion, wherein the control program includes: A dividing module that divides the shape of the molded article by a minute surface, an extraction module that extracts a portion having a corner shape portion from the surface divided by the dividing module, and a cross section of the part extracted by the extraction module. A temperature prediction module for partially extracting and predicting the temperature inside and outside the corner shape portion, and the temperature inside and outside the corner shape portion obtained by the temperature prediction module as the mold temperature of the cavity surface during the molding process. A storage medium comprising: a temperature unevenness prediction module for predicting temperature unevenness of a molded article. 133. The storage medium according to claim 132, wherein said temperature prediction module is performed by applying a numerical simulation method (numerical analysis method). 134. The storage medium according to claim 133, wherein said numerical simulation method is a difference method. 135. The storage medium according to claim 133, wherein said numerical simulation method is a finite element method. 136. The storage medium according to claim 133, wherein said numerical simulation method is a finite volume method. 137. The storage medium according to claim 133, wherein said numerical simulation method is a boundary element method. 138. The storage medium according to claim 132, wherein said molding process is an injection molding process. 139. Claims 1 to 11, 23 to 29, 37
And a method for predicting the temperature of a molded article according to any one of claims 12 to 22, 30 to 36, 44 to 5.
Based on the temperature history of the molded article obtained by the temperature estimation apparatus for molded articles described in the paragraphs 0, 58 to 64, 72 to 78, the temperature change to the final room temperature is replaced with an equivalent thermal load as needed, and the deformation is performed. A storage medium storing a control program for controlling an apparatus for estimating a deformation amount of a molded article for predicting a deformation amount by performing an analysis. 140. The storage medium according to claim 139, wherein said deformation amount is a warpage amount. 141. A molding for predicting an amount of deformation by performing a deformation analysis by replacing a temperature change to a room temperature finally with an equivalent thermal load as needed based on a temperature history of a molded product having a predetermined shape portion. A storage medium storing a control program for controlling the deformation amount prediction device of the article, wherein the control program is a division module that divides the shape of the molded article on a minute surface in a molding process of the molded article, An attribute assignment module for assigning the shape and size of a predetermined shape portion as attributes to the surface divided by the division module, and a numerical simulation method (numerical analysis) for partially calculating the temperature of the cross section of the portion to which the attribute is assigned by the attribute assignment module Method)
A shrinkage strain calculation module for performing a flow simulation by applying the numerical simulation method to the molded article model divided by the division module to determine shrinkage strain of each surface,
A deformation analysis module that applies a thermal load and shrinkage strain of each part to the molded product model divided by the division module to perform a deformation analysis, and all the parts to which the shape of the predetermined shape part is added by the attribute assignment module, The temperature of the predetermined shape portion of each part is obtained by the temperature calculation module, the shrinkage strain of each minute surface is simultaneously obtained by the shrinkage strain calculation module, and the temperature obtained by the temperature calculation module is converted into an equivalent thermal load. A storage medium for predicting an amount of deformation of a molded product by giving a shrinkage strain obtained by the shrinkage strain calculation module as an analysis condition in a deformation analysis module. 142. The storage medium according to claim 141, wherein the temperature of said predetermined shape portion obtained by said temperature calculation module is used as a boundary condition for calculation in a shrinkage distortion calculation module. 143. The storage medium according to claim 141, wherein the predetermined shape portion is a groove shape portion. 144. The storage medium according to claim 141, wherein the predetermined shape portion is a projection shape portion. 145. The storage medium according to claim 141, wherein said predetermined shape portion is a corner shape portion. 146. The storage medium according to claim 141, wherein the predetermined shape portion is a rib shape portion. 147. The storage medium according to claim 107, wherein said storage medium is a floppy (registered trademark) disk.
145. The storage medium according to 145 or 146. 148. The storage medium according to claim 107, wherein said storage medium is a hard disk.
6. The storage medium according to 6. 149. The storage medium according to claim 107, wherein said storage medium is an optical disk. 150. The storage medium according to claim 107, wherein the storage medium is a magneto-optical disk.
6. The storage medium according to 6. 151. The storage medium is a CD-ROM (C
ohmpact Disk Read Only Mem
146) or (147).
Or the storage medium according to 146. 152. The storage medium is a CD-R (Com).
150. The storage medium according to claim 107, wherein the storage medium is a "Patch Disk Recordable". 153. The storage medium according to claim 107, wherein said storage medium is a magnetic tape. 154. The storage medium according to claim 107, wherein said storage medium is a nonvolatile memory card. 155. The storage medium, wherein the storage medium is a ROM (Read
150. The storage medium according to claim 107, wherein the storage medium is an only memory (chip) chip.