JP5013013B1 - Parting line determination device, parting line determination program - Google Patents

Abstract

A parting line determination device and a parting line determination program capable of reducing the man-hours required for determining a parting line of a molded product are obtained.
For each surface of a molded product, depending on the means, whether it is a surface molded by a mold, a surface molded by a core mold, a surface molded by a slide mold, a divided surface, or an absolute under surface, This information is input to the parting line determination means 16U. Based on this information, the parting line determination means 16U gives different color information to each surface, and creates a parting line at the boundary of each surface, thereby ending the process of determining the parting line. Thus, the man-hour required for determining the parting line of a molded product can be reduced.
[Selection] Figure 1

Description

  The present invention relates to a parting line determination device and a parting line determination program.

  Patent Document 1 describes a tool path creation device for obtaining tool path data in consideration of a parting surface of a molded product.

  Specifically, the surface data of the molded product is created based on the digitized data. Furthermore, the surface data is divided into parts inside and outside the parting line, and the data obtained by offsetting the parting surface outside the parting line and the data in the parting line are combined to obtain the tool path data from the composite surface model. It has become.

Japanese Patent Laid-Open No. 05-100727

  The subject of this invention is reducing the man-hour required for the determination of the parting line of a molded article.

  The parting line determination device according to claim 1 of the present invention acquires surface information of a molded product, and calculates a normal of any normal calculation point on each surface, and the normal Based on the direction of the normal line of each surface calculated by the calculation means and the preset relative movement direction of the mold and the core mold constituting the mold for molding the molded product, the molded product Standing wall surface standing along the die-cutting direction, surface extraction means for extracting the facing surface facing the mold or core mold, and the standing wall surface extracted by the surface extraction means The both standing wall discriminating means for discriminating whether or not the both standing wall surfaces can be molded by both the mold and the core mold, and molding by both the cavity mold and the core mold by the both standing wall discriminating means. Not determined to be possible For the wall surface, based on the determination result of the one standing wall discriminating means and the one standing wall discriminating means for discriminating whether the one standing wall surface can be molded by either the mold or the core mold, On the other hand, with respect to the standing wall surface, a first determination means for determining whether to mold with a mold or a core mold, and whether to form both the standing wall surfaces with a mold according to the determination result of the first determination means Second determining means for determining whether to mold with a core mold, third determining means for determining whether the opposing surface extracted by the surface extracting means is molded with a mold or a core mold, and at least , Parting line determination means for determining parting of a molded product based on the determination results of the first determination means, the second determination means, and the third determination means. And wherein the Rukoto.

The parting line determination device according to claim 2 of the present invention is the parting line determination device according to claim 1, wherein the surface extraction unit includes a normal direction of each surface calculated based on the normal line calculation unit, and the molding. Based on the predetermined relative movement direction of the mold and the core mold constituting the mold for molding the product, the surface constituting the surface of the molded article is either the mold or the core mold. On the other hand, a cylindrical portion that further extracts both side under surfaces that cannot be molded and determines whether or not both side under surfaces extracted by the surface extracting means constitute a cylindrical cylindrical portion. A first slice for determining whether or not the slide part can be molded based on a preset moving direction of the cylindrical part determined by the determination part and the cylindrical part determination part. Forming discriminating means and second slide forming discriminating means for discriminating whether or not the adjacent surface adjacent to the cylindrical portion determined to be moldable by the slide mold by the first slide molding discriminating means can be molded by this slide mold. The cylindrical portion determined to be moldable by the slide mold by the first slide molding determining means, and the adjacent surface adjacent to the cylindrical portion determined to be moldable by the slide mold by the second slide molding determining means And a fourth determining means for determining to form with the slide mold, wherein the parting line determining means includes at least the first determining means, the second determining means, the third determining means, and the The parting of the molded product is determined based on the determination result of the fourth determining means.

The parting line determination device according to claim 3 of the present invention is the parting line determination device according to claim 2, wherein the cavity type and the core type of the standing wall surface standing along the die-cutting direction extracted by the surface extraction means are used. Recessed standing wall discriminating means for discriminating whether or not it is a concave concave standing wall surface that cannot be formed by both, and a slide type movement set in advance for the concave standing wall surface discriminated by the concave standing wall discriminating means Based on the direction, a third slide molding discriminating means for discriminating whether or not the slide mold can be molded, and an adjoining adjacent to the concave standing wall surface determined to be moldable by the slide mold by the third slide molding discriminating means for surface, and a fourth slide molding discrimination means for discriminating whether or not can be formed in this slide, slide die by the third sliding mold discriminating means Moldable and discriminated the concave trailing wall, and the adjacent surface adjacent to the concave trailing wall is determined to be molded in a slide-type by the fourth slide molding determination unit determines to be molded with the slide-type A fifth determining means, wherein the parting line determining means includes at least the first determining means, the second determining means, the third determining means, the fourth determining means, and the fifth determining means. It is characterized in that parting of a molded product is determined based on the determination result.

  The parting line determination device according to claim 4 of the present invention is the parting line determination device according to claim 3, wherein the both standing wall discriminating means have not been determined to be moldable by both the mold and the core mold, A convexity discriminating means for discriminating whether the convex wall is provided with a convexity that cannot be molded by either the mold or the core mold, and the convexity discriminated by the convexity discrimination means The cavity mold and the core mold can be divided and molded with respect to a standing wall surface provided with a portion and a surface that cannot be molded with the mold, the core mold, and the slide mold by the means. Split discriminating means for discriminating whether it is a split surface, a slide surface that can be molded with another slide mold, or an absolute under surface that cannot be molded with a predetermined mold configuration, and a slide discriminated by the split discriminating means And a sixth determining means for determining that the divided surface is a divided surface, and the absolute under surface is an absolute under surface, and the parting line determining means comprises: Determining parting of a molded product based on the determination results of the first determining means, the second determining means, the third determining means, the fourth determining means, the fifth determining means, and the sixth determining means; It is characterized by.

  The parting line determination program according to claim 5 of the present invention includes a computer, normal calculation means for acquiring surface information of a molded product and calculating a normal of an arbitrary normal calculation point on each surface; Based on the direction of the normal of each surface calculated by the normal calculation means, and the preset relative movement direction of the mold and core forming the mold for forming the molded product, The surface constituting the surface of the molded product is extracted by the surface extracting means for extracting the standing wall surface standing along the die-cutting direction and the facing surface facing the cavity mold or the core mold, and the surface extracting means. With respect to the standing wall surface, both standing wall discriminating means for discriminating whether or not it is both standing wall surfaces that can be molded by both the mold and the core mold, and both the mold type and the core mold by the both standing wall discriminating means. Molded with both With respect to the standing wall surface that has not been discriminated as a function, it is determined whether the standing wall discriminating means and the one standing wall discriminating means discriminate whether or not it is a one standing wall surface that can be molded by either the mold or the core mold. Based on the result, for the one standing wall surface, the first determining means for determining whether to mold with the mold or the core mold, and based on the determination result of the first determining means, for both the standing wall surfaces, A second deciding means for deciding whether to mold with a mold or a core mold, and a second deciding whether to mold with a mold or a core mold for the facing surface extracted by the surface extracting means. Three determining means, and parting for determining parting of the molded product based on at least the determination results of the first determining means, the second determining means, and the third determining means Characterized in that to function as an in-determining means.

The parting line determination program according to claim 6 of the present invention is the parting line determination program according to claim 5, wherein the surface extraction means includes the direction of the normal of each surface calculated based on the normal calculation means, and the shaping Based on the predetermined relative movement direction of the mold and the core mold constituting the mold for molding the product, the surface constituting the surface of the molded article is either the mold or the core mold. On the other hand, a cylindrical portion that further extracts both side under surfaces that cannot be molded and determines whether or not both side under surfaces extracted by the surface extracting means constitute a cylindrical cylindrical portion. First, to determine whether or not the cylindrical portion determined by the determining means and the cylindrical portion determining means can be molded by the slide mold based on a preset moving direction of the slide mold. Ride molding discriminating means and a second slide molding discriminating unit for discriminating whether or not the adjacent surface adjacent to the cylindrical portion determined to be moldable by the slide mold by the first slide molding discriminating unit can be molded by this slide mold. And an adjacent surface adjacent to the cylindrical portion determined to be moldable with the slide mold by the second slide molding determining means and the cylindrical portion determined to be moldable with the slide mold by the first slide molding determining means A fourth deciding means for deciding to form with the slide mold, wherein the parting line deciding means is at least the first deciding means, the second deciding means, the third deciding means, and It functions to determine parting of a molded product based on the determination result of the fourth determining means.

The parting line determination program according to claim 7 of the present invention is the parting line determination program according to claim 6, wherein the cabinet type and the core type of the standing wall surface standing along the die-cutting direction extracted by the surface extracting means are used. Recessed standing wall discriminating means for discriminating whether or not it is a concave concave standing wall surface that cannot be formed by both, and a slide type movement set in advance for the concave standing wall surface discriminated by the concave standing wall discriminating means Based on the direction, a third slide molding discriminating means for discriminating whether or not the slide mold can be molded, and an adjoining adjacent to the concave standing wall surface determined to be moldable by the slide mold by the third slide molding discriminating means for surface, and a fourth slide molding discrimination means for discriminating whether or not can be formed in this slide, slide through said third slide molding discriminating means Moldable and discriminated the concave trailing wall in de type, and the adjacent surface adjacent to the concave trailing wall is determined to be molded in a slide-type by the fourth slide molding discriminating means, it is molded with the slide-type And a parting line determination unit comprising at least the first determination unit, the second determination unit, the third determination unit, the fourth determination unit, and the fifth determination unit. It functions to determine parting of a molded product based on the determination result of the determining means.

  The parting line determination program according to an eighth aspect of the present invention is the one according to the seventh aspect, wherein the both standing wall discriminating means does not discriminate that molding is possible in both the mold mold and the core mold. Convex part discriminating means for discriminating whether or not the standing wall surface is a standing wall surface provided with convex convex parts that cannot be molded by either the mold or the core mold, and the convex part discriminating means The cavity mold and the core mold are divided with respect to the standing wall surface provided with the convex portion determined in step 1 and the surface that cannot be molded by the mold, the core mold, and the slide mold by the means. A division discrimination means for discriminating between a split surface that can be molded, a slide surface that can be molded with another slide mold, or an absolute under surface that cannot be molded with a predetermined mold configuration; and And a sixth determination means for determining that the separated slide surface is formed by a slide mold, the split surface is a split surface, and the absolute under surface is an absolute under surface, and the parting The line determining means is a party of molded articles based on the determination results of the first determining means, the second determining means, the third determining means, the fourth determining means, the fifth determining means, and the sixth determining means. It is characterized by functioning so as to determine the operating time.

  According to the parting line determination apparatus of the first aspect of the present invention, compared with the case where the engineer determines the parting line of the molded product while observing the shape of the molded product, the parting line of the molded product is determined. The number of man-hours required can be reduced.

  According to the parting line determination device of claim 2 of the present invention, the underside surfaces on both sides that cannot be molded by either the mold or the core die are extracted from the surface constituting the molded product, Compared with the case where it is not discriminated whether or not the cylindrical part can be molded by the process, the man-hours required for determining the parting line of the molded product can be reduced.

  According to the parting line determination device of the third aspect of the present invention, a concave standing wall surface that is not moldable by both the mold and the core mold is discriminated, and the concave standing wall surface is a concave shape that can be molded by a slide mold. Compared with the case where it is not determined whether or not the wall surface is a standing wall surface, the man-hours required for determining the parting line of the molded product can be reduced.

  According to the parting line determination device of claim 4 of the present invention, compared to the case where it is not determined whether the standing wall surface provided with the convex portion can be formed by dividing the surface, the parting line Man-hours required for determination can be reduced.

  According to the parting line determination program of claim 5 of the present invention, compared with the case where the engineer determines the parting line of the molded product while looking at the shape of the molded product, the parting line of the molded product is determined. The number of man-hours required can be reduced.

  According to the parting line determination program of claim 6 of the present invention, the underside surfaces on both sides that cannot be molded by either the mold or the core die are extracted from the surfaces constituting the molded product, Compared with the case where it is not discriminated whether or not the cylindrical part can be molded by the process, the man-hours required for determining the parting line of the molded product can be reduced.

  According to the parting line determination program of claim 7 of the present invention, the concave standing wall surface that is not moldable by both the mold and the core mold is discriminated, and the concave standing wall surface is a concave shape that can be molded by the slide mold. Compared with the case where it is not determined whether or not the wall surface is a standing wall surface, the man-hours required for determining the parting line of the molded product can be reduced.

  According to the parting line determination program of claim 8 of the present invention, as compared with the case where it is not determined whether the standing wall surface provided with the convex portion can be formed by dividing the surface, the parting line Man-hours required for determination can be reduced.

It is the flowchart shown about the process which each means provided in the parting line determination apparatus which concerns on this embodiment performs. It is the flowchart shown about the process which each means provided in the parting line determination apparatus which concerns on this embodiment performs. This is a subroutine "A" shown in FIG. It is the flowchart shown about the process which each means provided in the parting line determination apparatus which concerns on this embodiment performs. This is a subroutine "C" shown in FIG. It is the flowchart shown about the process which each means provided in the parting line determination apparatus which concerns on this embodiment performs. This is a subroutine "D" shown in FIG. It is the flowchart shown about the process which each means provided in the parting line determination apparatus which concerns on this embodiment performs. This is a subroutine "E" shown in FIG. It is the flowchart shown about the process which each means provided in the parting line determination apparatus which concerns on this embodiment performs. This is the subroutine “F” shown in each figure. It is explanatory drawing explaining the process which the parting line means provided in the parting line determination apparatus which concerns on this embodiment performs. It is explanatory drawing which showed each means with which ROM of the parting line determination apparatus which concerns on this embodiment was equipped. It is the block diagram which showed the parting line determination apparatus etc. which concern on this embodiment. It is the conceptual diagram which showed the normal calculation point used for demonstrating the operation | work of the normal calculation means with which the parting line determination apparatus concerning this embodiment was equipped, and the direction of the normal. It is the perspective view which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article provided with the both side under surface especially. It is the perspective view which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article provided with the concave standing wall surface especially. (A) (B) It is explanatory drawing explaining the concave edge or the convex edge about the edge of the molded article processed by the parting line determination apparatus which concerns on this embodiment. It is the perspective view which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article especially equipped with both standing wall surfaces. It is the perspective view which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article provided with the standing wall surface in which the cavity under surface and the core under surface were formed especially. (A) (B) It is the perspective view which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article provided with the one standing wall surface especially. It is the perspective view which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article provided with the cylindrical part especially. It is sectional drawing which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article provided with the cylindrical part especially. It is sectional drawing which showed the molded article processed by the parting line determination apparatus which concerns on this embodiment, and showed the molded article provided with the concave standing wall surface especially. (A) (B) The perspective view and front view which were shown when the molded article processed by the parting line determination apparatus which concerns on this embodiment are shown, especially when examination of a divided surface is demonstrated. (A) (B) The perspective view and front view which were shown when the molded article processed by the parting line determination apparatus which concerns on this embodiment are shown, especially when examination of a divided surface is demonstrated.

   An example of a parting line determination device and a parting line determination program according to an embodiment of the present invention will be described with reference to FIGS.

(overall structure)
As shown in FIG. 9, a CAD (Computer Aided Design) device 12 and a display 14 are connected to the parting line determination device 10 of this embodiment that determines the parting line of a molded product.

  The CAD device 12 is configured to output surface information constituting the molded product to the parting line determination device 10. Further, the display 14 displays the output of the parting line determination device 10 on a screen.

  Further, the parting line determination device 10 includes a ROM (Read Only Memory) 10A, a RAM (Random Access Memory) 10B, a CPU (Central Processing Unit) 10C, an HDD (Hard Disk Drive) 10D, and an I / O (input / output). A port 10E is provided. The ROM 10A, RAM 10B, CPU 10C, HDD 10D, and I / O port 10E are connected to each other via a bus 10F. Thus, the parting line determination apparatus 10 has a computer function.

  A ROM 10A as a storage medium stores a basic program such as an OS. Further, the ROM 10A of the present embodiment includes normal calculation processing, surface extraction processing, concave standing wall discrimination processing, both standing wall discrimination processing, convex portion discrimination processing, one standing wall discrimination processing, cylindrical portion discrimination processing, first Slide molding discrimination process, second slide molding discrimination process, third slide molding discrimination process, fourth slide molding discrimination process, first determination process, second determination process, third determination process, fourth determination process, fifth determination process Each program for executing a processing routine of each process of the division determination process, the sixth determination process, and the parting line determination process is stored.

  The CPU 10C reads each program from the ROM 10A and executes each process. The RAM 10B temporarily stores various data. The CAD device 12 and the display 14 are connected to the I / O port 10E.

  The parting line determination device 10 as a computer is operated by normal calculation processing, surface extraction processing, concave standing wall discrimination processing, both standing wall discrimination processing, convex portion discrimination processing, one standing wall discrimination processing, cylindrical portion discrimination processing, first slide Molding determination process, second slide molding determination process, third slide molding determination process, fourth slide molding determination process, first determination process, second determination process, third determination process, fourth determination process, fifth determination process, When expressed in functional blocks according to the division determination process, the sixth determination process, and the parting line determination process, as shown in FIG. 8, the normal line calculation means 16A, the surface extraction means 16B, and both the standing wall determination means 16C provided in the ROM 10A. , Concave standing wall discriminating means 16D, convex portion discriminating means 16E, one standing wall discriminating means 16F, cylindrical portion discriminating means 16G, first slide molding discriminating means 16H, second Ride molding discriminating means 16J, third slide molding discriminating means 16K, fourth slide molding discriminating means 16L, first determining means 16M, second determining means 16N, third determining means 16P, fourth determining means 16Q, fifth determining means 16R, division determination means 16S, sixth determination means 16T, and parting line determination means 16U.

  Each means will be described below.

<Normal calculation means>
The normal line calculation means 16A acquires the surface information of the molded product from the CAD device 12, and calculates the normal of any normal line calculation point on each surface. A specific procedure will be described together with a flowchart to be described later.

<Surface extraction means>
The surface extraction unit 16B includes a normal direction of each surface calculated by the normal line calculation unit 16A, and a preset relative movement direction between a mold and a core mold that form a mold for forming a molded product. Based on (die cutting direction), various surfaces constituting the molded product are extracted. Specifically, the surface extraction means 16B is a standing wall surface standing along the die-cutting direction, a facing surface facing the cavity mold or the core mold, and the cavity mold or the core mold. Extract underside on both sides that cannot be molded on one side. A specific extraction procedure will be described together with a flowchart to be described later.

<Concave standing wall discriminating means>
The recessed standing wall discriminating means 16D determines whether or not the standing wall surface standing along the die-cutting direction extracted by the surface extracting means 16B is a concave concave standing wall surface that cannot be molded by both the mold and the core mold. Is determined. A specific determination procedure will be described with a flowchart described later.

<Both standing wall discriminating means>
The both standing wall discriminating means 16C is formed by both the cavity mold and the core mold on the standing wall surface extracted by the surface extracting means 16B and the standing wall surface not discriminated as the concave standing wall surface by the concave standing wall discriminating means 16D. It is determined whether or not both wall surfaces are possible. A specific determination procedure will be described with a flowchart described later.

<Convex part discrimination means>
The convex portion discriminating means 16E discriminates whether or not the standing wall surface that has been determined to be moldable by both the cavity mold and the core mold by the standing wall discriminating means 16C is a standing wall surface provided with a convex convex portion. To do. A specific determination procedure will be described with a flowchart described later.

<One standing wall discrimination means>
On the other hand, the standing wall discriminating means 16F is a standing wall surface that has not been determined to be moldable by both the mold and the core mold by the standing wall discriminating means 16C, and the standing wall surface on which the convex portion is provided by the convex part discriminating means 16E. It is determined whether or not the standing wall surface that has not been identified as is a one standing wall surface that can be molded by either the mold type or the core type. A specific determination procedure will be described with a flowchart described later.

<Cylindrical discriminating means>
The cylindrical portion discriminating means 16G discriminates whether or not the double-sided under surface constitutes a part of the cylindrical cylindrical portion with respect to the both-side under surfaces extracted by the surface extracting unit 16B. A specific determination procedure will be described with a flowchart described later.

<First slide molding discriminating means>
The first slide molding discriminating means 16H discriminates whether or not the cylindrical part discriminated by the cylindrical part discriminating means 16G can be molded by this slide mold based on a preset moving direction of the slide mold.

  Specifically, a point on the surface constituting the cylindrical portion is projected in the moving direction of the slide mold, and it is determined whether or not molding is possible depending on whether there is an obstacle.

<Second slide molding discriminating means>
The second slide molding discriminating means 16J discriminates whether or not the adjacent surface adjacent to the cylindrical portion determined to be moldable by the slide mold by the first slide molding discriminating means 16H can be molded by this slide mold.

  Specifically, a point on the surface constituting the cylindrical portion and the adjacent surface is projected in the moving direction of the slide mold, and it is determined whether or not molding is possible depending on whether or not there is an obstacle.

<Third slide molding discriminating means>
The third slide molding discriminating means 16K discriminates whether or not the concave standing wall surface discriminated by the concave standing wall discriminating means 16D can be molded by this slide mold based on a preset moving direction of the slide mold.

  Specifically, a point on the surface that forms the concave standing wall surface is projected in the moving direction of the slide mold, and it is determined whether or not molding is possible depending on whether or not there is an obstacle.

<Fourth slide molding discriminating means>
The fourth slide molding discriminating means 16L discriminates whether or not the adjacent surface adjacent to the concave standing wall surface determined to be moldable by the slide mold by the third slide molding discriminating means 16K can be molded by this slide mold.

  Specifically, the point on the surface constituting the concave standing wall surface and the adjacent surface is projected in the moving direction of the slide mold, and it is determined whether or not the molding can be performed depending on whether or not there is an obstacle.

<First determining means>
The first determination means 16M determines whether the one standing wall surface is molded with a mold or a core mold based on the discrimination result of the one standing wall discrimination means 16F. A specific determination procedure will be described together with a flowchart to be described later.

<Second determining means>
Based on the determination result of the first determination means 16M, the second determination means 16N determines whether both standing wall surfaces are molded with the mold or the core mold. A specific determination procedure will be described together with a flowchart to be described later.

<Third determining means>
The third determining unit 16P determines whether the opposing surface extracted by the surface extracting unit 16B is to be molded with a mold or a core mold. A specific determination procedure will be described together with a flowchart to be described later.

<Fourth determining means>
The fourth determining means 16Q is adjacent to the cylindrical portion determined to be moldable by the slide mold by the first slide molding determining means 16H and the cylindrical portion determined to be moldable by the slide mold by the second slide molding determining means 16J. The adjacent surface is determined to be molded with this slide mold. A specific determination procedure will be described together with a flowchart to be described later.

<Fifth determining means>
Fifth determining means 16R is moldable judged to be concave up wall in slide by a third slide molding determination unit 16K, and the fourth slide molding determination unit 16L to moldable judged to be concave up wall in slide It is determined that the adjacent adjacent surfaces are formed by this slide mold. A specific determination procedure will be described together with a flowchart to be described later.

<Division determination means>
The division determining unit 16S is configured to determine whether the standing wall surface provided with the convex portion determined by the convex portion determining unit 16E and the surface that cannot be formed by the mold, the core mold, and the slide mold by each unit. It is determined whether the mold and the core mold are divided and can be molded, a slide surface that can be molded with another slide mold, or an absolute under surface that cannot be molded with a predetermined mold structure. A specific determination procedure will be described with a flowchart described later.

<Sixth decision means>
The sixth determination unit 16T forms the slide surface determined by the division determination unit 16S with a slide mold, sets the determined divided surface as the final divided surface, and determines the determined absolute under surface as the final absolute Decide on the underside. A specific determination procedure will be described together with a flowchart to be described later.

<Parting line determination means>
The parting line determination unit 16U is based on the determination results of the first determination unit 16M, the second determination unit 16N, the third determination unit 16P, the fourth determination unit 16Q, the fifth determination unit 16R, and the sixth determination unit 16T. Determine parting. A specific determination procedure will be described together with a flowchart to be described later.

(Main part configuration)
Next, each process executed by each unit provided in the parting line determination apparatus 10 will be described with reference to the flowcharts shown in FIGS.

<Normal calculation processing>
As shown in FIG. 1, first, in step 100, the normal calculation means 16 </ b> A acquires the surface information of the molded product from the CAD device 12 (see FIG. 9), and calculates a predetermined normal on each surface. Calculate the normal of a point.

  Specifically, as shown in FIG. 10, the direction of the normal line at the normal calculation points (p1 to p16) that are the grid intersection points of the grid lines in the U direction and the V direction shown on each surface of the molded product ( h1 to h16) are calculated.

  When the calculation of the normal direction at the normal calculation point is completed in step 100, the process proceeds to step 200.

<Surface extraction processing>
In step 200, the surface extraction means 16B includes the normal direction of each surface calculated by the normal line calculation means 16A, and a preset mold and core mold that constitute a mold for forming a molded product. The surface is extracted based on the relative movement direction (die cutting direction).

  Specifically, comparing the normal direction with the die-cutting direction, the surface constituting the surface of the molded product is a standing wall that stands along the die-cutting direction, the facing surface facing the mold or core die , And underside surfaces that cannot be molded by either the mold or the core mold are extracted.

  As shown in FIG. 11, for example, a standing wall surface 20 standing in the die-cutting direction (arrow KH), a facing surface 22 facing the mold or core mold, and either the mold or core mold are formed. The underside surfaces 24 that cannot be extracted are extracted.

  Here, the standing wall surface is a surface in which the normal direction (h) of the surface is perpendicular to the die cutting direction (arrow KH). The facing surface 22 is a surface in which the normal direction (h) of the surface is directed to either the mold type side or the core type side. The double-sided under surface 24 is such that the normal direction (h) of different points on the surface faces both the cavity type side (upper side shown in FIG. 11) and the core type side (lower side shown in FIG. 11). It is a curved surface.

  If the standing wall 20 is extracted in step 200, the process proceeds to step 300. If the opposing surface 22 is extracted, the process proceeds to step 3000 described later, and if both the under surfaces 24 are extracted, the process proceeds to step 1200 described later. .

  In step 2200, which will be described later, the process after step 300 is performed in a state where the surface determined to be molded by the slide mold is excluded by the fourth determining means 16Q.

  Further, the upper side of the drawing direction (arrow KH) shown in each drawing is the mold type side, and the lower side of the page is the core type side.

<Concave standing wall discrimination processing>
As shown in FIG. 1, in step 300, the concave standing wall discriminating means 16 </ b> D acquires all edges constituting the periphery of the standing wall surface 20 for the standing wall surface 20 extracted in step 200 and proceeds to step 400.

  In step 400, it is determined whether there is a concave standing wall surface that cannot be formed by both the mold and the core mold by using the edges that form the periphery of the standing wall surface 20 acquired in step 300.

  Specifically, as shown in FIG. 12, when all the edges around the standing wall 20 are concave edges, it is determined that the wall 20A is a concave standing wall.

  Here, as shown in FIG. 13 (A), the concave edge is an edge whose angle (α degree) formed with an adjacent surface is smaller than 180 degrees, and as shown in FIG. 13 (B), A convex edge is an edge whose angle (α degree) formed with an adjacent surface is larger than 180 degrees.

  If there is another standing wall 20 that has not been identified as the concave standing wall 20A in step 400, the process proceeds to step 500.

  If it is determined in step 400 that the wall surface 20A is a concave standing wall surface, the process proceeds to step 3500 described later.

<Both standing wall discrimination processing>
As shown in FIG. 1, in step 500, both standing wall discriminating means 16C can mold the other standing wall surface 20 that has not been discriminated as the concave standing wall surface 20A in step 400 by both the mold and the core mold. It is determined whether or not both are standing wall surfaces 20B.

  Specifically, as shown in FIG. 14, when all the edges around the standing wall surface 20 are convex edges, it is determined that both are standing wall surfaces 20B.

  If there is another standing wall 20 that has not been identified as both standing walls 20B in step 500, the process proceeds to step 600.

  If it is determined in step 500 that both are standing wall surfaces 20B, the process proceeds to step 4400 described later.

<Convex part discrimination processing>
As shown in FIG. 1, in step 600, the convex portion discriminating means 16E makes it impossible to form the other standing wall surface 20 that has not been discriminated as both standing wall surfaces 20B in step 500 by either the mold type or the core type. It is determined whether or not a possible convex protrusion is provided on the standing wall 20.

  As shown in FIG. 11, specifically, by determining whether or not the surface adjacent to the standing wall surface 20 and the concave edge E11 is the both-side under surface 24, the convex convex portion 52 stands. It is determined whether or not the wall surface 20 is provided. As described above, in step 600, it is determined whether or not the convex portion 52 composed of the underside surfaces 24 (curved surfaces) on both sides is provided on the standing wall surface 20.

  If there is another standing wall surface 20 that has not been identified as the standing wall surface 20 provided with the convex portion 52 in step 600, the process proceeds to step 700.

  If it is determined in step 600 that there is the standing wall surface 20 provided with the convex portions 52 constituted by the underside surfaces 24 on both sides, the process proceeds to a division determination process (after step 6000) described later.

  As shown in FIG. 1, in step 700, as in step 600, the convex portion determination unit 16 </ b> E performs the other standing wall surface 20 that has not been determined as the standing wall surface 20 provided with the convex portion 52 in step 600. It is determined whether or not the raised wall surface 20 is provided with a convex portion that cannot be molded by either the mold type or the core type.

  As shown in FIG. 15, specifically, a cavity under surface 28A that cannot be molded by a mold on the surface adjacent to the standing wall 20 and the concave edge E12, and a core mold on the surface adjacent to the concave edge E13. By determining whether or not both the core under surface 28 </ b> B that cannot be formed by the above are provided, it is determined whether or not the convex convex portion 54 is provided on the standing wall surface 20. As described above, in step 700, it is determined whether or not the convex portion 54 constituted by a plane is provided on the standing wall surface 20.

  If there is another standing wall surface 20 that has not been identified as the standing wall surface 20 provided with the convex portion 54 in step 700, the process proceeds to step 800.

  If it is determined in step 700 that there is the standing wall surface 20 provided with the convex portion 54 composed of the cavity under surface 28A and the core under surface 28B, the division determination processing (after step 6000) described later is performed. Transition.

<One-sided wall discrimination processing>
As shown in FIG. 1, in step 800, the one standing wall discriminating means 16 </ b> F is provided with a convex portion formed by an adjacent surface adjacent to the standing wall surface 20 and the concave edge at the end portion of the mold type. Or whether it is provided at the end of the core mold side.

  Specifically, as shown in FIG. 16 (A), a convex portion 62 formed by an adjacent surface 56 sandwiching the standing wall surface 20 and the concave edge E14 is provided at the end of the core mold side (the lower side of the paper). 16B, whether or not the convex portion 64 formed by the adjacent surface 58 adjacent to the standing wall surface 20 and the concave edge E15 is provided at the end of the mold type side (upper side of the paper surface). Determine.

  In step 800, it is determined whether the convex portion constituted by the adjacent surface adjacent to the standing wall surface 20 and the concave edge is provided at the cavity-type side end portion or the core-type side end portion. Then, the process proceeds to step 900.

  As shown in FIG. 1, in step 900, it is determined whether or not the standing wall 20 determined in step 800 is the one standing wall 20 </ b> E that can be molded with a mold or a core mold.

  Specifically, as shown in FIGS. 16A and 16B, a point on the surface of one standing wall 20E is projected on the cavity mold side or the core mold side (projected in the die cutting direction), and the obstacle is It is determined whether or not it is a one-sided wall 20E that can be molded with a mold or a core mold.

  If it is determined in step 900 that there is the one standing wall surface 20E, the process proceeds to step 1000.

  If there is another standing wall 20 that is not determined to be the one standing wall 20E in step 900, the process proceeds to a division determination process (after step 6000) described later.

<First decision process>
As shown in FIG. 1, in step 1000, the first determining means 16M causes the one standing wall 20E to be molded with a mold (FIG. 16A) based on the discrimination result of the one standing wall discriminating means 16F. It is determined whether to mold with the core mold (FIG. 16B), and the operation is completed.

(Processing on both sides under surface)
Next, as shown in FIG. 1, the processing of the underside surfaces 24 on both sides extracted by the surface extracting means 16B in step 200 will be described.

<Cylindrical part discrimination processing>
As shown in FIG. 2, in step 1200, the cylindrical portion discriminating means 16 </ b> G acquires the both-side under surfaces 24 extracted in step 200 and further adjoins the both-side under surfaces 24 from the edge of the acquired both-side under surfaces 24. Get a face.

  As shown in FIG. 17, specifically, an adjacent surface 30 adjacent to the edge E1 and an adjacent surface 32 adjacent to the edge E2 are acquired from the edge E1 and the edge E2 constituting the double-sided under surface 24. The process proceeds to step 1300.

  In step 1300, it is determined whether or not the center of the edge E1 is the same as the center of the edge E2. As shown in FIG. 17, since the center of the edge E1 and the center of the edge E2 are the same, the process proceeds to step 1400.

  In Step 1400, the process proceeds to Step 1500 with the double-sided under surface 24 formed by the edge E1 and the edge E2 as the boss surface.

  In step 1500, it is determined whether or not the evaluated edge is the final edge.

  Specifically, it is determined whether there is a surface that needs to be evaluated as to whether or not it is a boss surface with respect to the adjacent surfaces adjacent to the edge E1 and the edge E2 constituting the double-sided under surface 24 determined last time. The evaluation of Step 1300 to Step 1400 is performed, and when the boss surface is lost, it is determined as the final edge.

  As shown in FIG. 17, since the adjacent surfaces 30 and 32 adjacent to the edge E1 and the edge E2 need to be evaluated, it is determined that the edges E1 and E2 are not final edges.

  If it is determined that the edge is not the last edge, the processing from step 1300 to step 1400 is performed again.

  In step 1300 performed again, it is determined whether or not the centers of the edges constituting the adjacent faces 30 and 32 are the same as the centers of the edges E1 and E2 constituting the double-sided under face 24 for the adjacent faces 30 and 32. .

  Specifically, as shown in FIG. 17, the adjacent surface 32 has an edge E3 having the same center as the edges E1 and E2, and therefore the adjacent surface 32 has an edge having the same center as the edges E1 and E2. Is determined. On the other hand, since the edges E4 to E7 constituting the adjacent surface 30 are not edges having the same center as the edges E1 and E2, the adjacent surface 30 is determined not to have an edge having the same center as the edges E1 and E2.

  In step 1300, since the centers of the edges E1 and E2 and the center of the edge E3 constituting the adjacent surface 32 are the same, the process proceeds to step 1400.

  As shown in FIG. 2, in step 1400, in step 1300, for the adjacent surface 32 constituted by the edge E <b> 3, the process proceeds to step 1500 using the adjacent surface 32 as a boss surface.

  In step 1500, it is determined whether or not the evaluated edge is the final edge.

  As shown in FIG. 17, since the adjacent surface 34 adjacent to the edge E3 needs to be evaluated, it is determined that the edge E3 is not the final edge.

  If it is determined that the edge is not the last edge, the processing from step 1300 to step 1400 is performed again.

  In step 1300 performed again, it is determined whether or not the center of the edge constituting the adjacent surface 34 is the same as the center of the edges E1 and E2 constituting the double-sided under surface 24. Since the center of the edge E9 constituting the adjacent surface 34 is the same as the center of the edges E1 and E2, the process proceeds to step 1400.

  In step 1400, for the adjacent surface 34 constituted by the edge E9, the process proceeds to step 1500 using the adjacent surface 34 as a boss surface.

  In step 1500, the evaluated edge E9 is determined as the final edge because there is no next edge and there is no surface that needs to be evaluated, and the process proceeds to step 1600.

  In Step 1300, the center of the edges E <b> 4 to E <b> 7 constituting the adjacent surface 30 is not the same as the centers of the edges E <b> 1 and E <b> 2 constituting the double-sided under surface 24 in Step 1300, and the process proceeds to Step 1500. In step 1500, the edges E <b> 4 to E <b> 7 are determined as final edges, and the process proceeds to step 1600.

  In step 1600, when a boss (cylindrical protrusion) composed of a boss surface is extracted, the process proceeds to step 1700.

  In step 1700, whether or not the boss (columnar protrusion) is a cylindrical part having a concave portion is determined by determining whether or not a cylindrical hole is formed in the boss (columnar protrusion) extracted in step 1600. Whether there is a direction cylinder) or not.

  Specifically, as shown in FIG. 17, the boss (cylindrical protrusion) constituted by the double-sided under surface 24, the adjacent surface 32, and the adjacent surface 34 that is a boss surface has a normal direction facing inward. It is determined by whether or not there is a face. Since the normal direction of the adjacent surface 34 faces inward, it is determined that the cylindrical surface 36 is a cylindrical portion.

  If it is determined in step 1700 that the boss is the cylindrical part 36, the process proceeds to step 1800.

  If there is a surface that has not been determined to be a boss (cylindrical protrusion) in step 1600, the process proceeds to a division determination process (after step 6000) described later.

  If there is a boss (columnar protrusion) that is not determined to be a cylindrical cylindrical portion in step 1700, the process proceeds to a division determination process (step 6000 and later) described later.

<First slide molding discrimination process>
In step 1800, the first slide molding discriminating means 16H uses the slide type movement direction (arrow S shown in FIG. 17) set in advance for the cylindrical portion 36 discriminated by the cylindrical portion discriminating means 16G. It is determined whether or not the mold can be formed.

  Specifically, as shown in FIG. 17, a point on the surface constituting the cylindrical portion 36 is projected in the movement direction of the slide mold, and whether or not the slide mold can be formed depending on whether there is an obstacle or not. Is determined. If it is determined that the cylindrical portion 36 can be formed with this slide mold, the process proceeds to step 1900.

  If it is determined in step 1800 that the cylindrical portion 36 cannot be formed with the slide mold, the process proceeds to a division determination process (step 6000 and later) described later.

<Second slide molding determination process and fourth determination process>
As shown in FIG. 2, in step 1900, the second slide molding determination unit 16 </ b> J acquires the edges of the underside surfaces 24 constituting the cylindrical portion 36 that has been determined in step 1800 that it can be molded with a slide mold.

  Specifically, as shown in FIG. 17, the edge E1 and the edge E2 constituting the both-side under surface 24 are acquired, and the process proceeds to Step 2000.

  As shown in FIG. 2, in step 2000, it is determined whether or not the edges E1 and E2 acquired in step 1900 are concave edges. If it is determined that the edge E1 is a concave edge, the process proceeds to step 2100 (see FIG. 17).

  In step 2000, for example, when it is determined that the edge acquired in step 1900 is not a concave edge, the process directly proceeds to step 2400.

In step 2100, the second slide molding discriminating means 16J discriminates whether or not the adjacent surface 30 adjacent to the edge E1 determined to be a concave edge in step 1900 can be molded by the slide mold for molding the cylindrical portion 36. (See FIG. 17).

  As shown in FIG. 17, specifically, the point on the adjacent surface 30 is projected in the moving direction (arrow S) of the slide mold, and whether or not the slide mold can be formed depending on whether there is an obstacle or not. Is determined. If it is determined that the adjacent surface 30 can be formed with this slide mold, the process proceeds to step 2200.

  In step 2200, the fourth determining means 16Q causes the slide portion to form the cylindrical portion 36 and the adjacent surface 30 adjacent to the cylindrical portion 36 that are determined to be moldable in the slide die in steps 1800 and 2100. And the process proceeds to step 2300.

  If it is determined in step 2100 that, for example, the adjacent surface of the concave edge extracted in step 2000 cannot be formed with a slide mold, the process directly proceeds to step 2300.

  In step 2300, it is determined whether or not the evaluated edge is the final edge.

  As shown in FIG. 17, specifically, the determination is made based on whether or not there is an adjacent surface that needs to be evaluated in the adjacent surface adjacent to the edges E4 to E7 constituting the adjacent surface 30 determined last. Evaluation of Step 2000 to Step 2200 is performed, and when there is no surface that can be formed by the slide mold for forming the cylindrical portion 36, it is determined as the final edge.

  In the case of the present embodiment, for example, since the adjacent surface 38 adjacent to the edge E5 needs to be evaluated, it is determined that the edge E5 is not the final edge, and the process proceeds to step 2000.

  In step 2000, it is determined whether or not the edge E5 is a concave edge. Since the edge E5 is a convex edge, it is determined that the edge E5 is not a concave edge, and the process proceeds to Step 2400.

  In step 2400, the adjacent surface 38 adjacent to the edge E5 is compared with the sliding movement direction (arrow S).

  As shown in FIG. 18, specifically, when the angle (angle β in the figure) formed between the moving direction of the slide mold and the adjacent surface 38 is 45 degrees or more, the process proceeds to step 2500.

  As shown in FIG. 2, in step 2500, whether or not the adjacent surface 38 whose angle with the moving direction of the slide mold is 45 degrees or more in step 2400 can be formed by the slide mold for forming the cylindrical portion 36. Is determined.

  As shown in FIG. 18, specifically, the point on the adjacent surface 38 is projected in the moving direction (arrow S) of the slide mold, and whether or not the slide mold can be formed depending on whether there is an obstacle or not. Is determined. If it is determined that the adjacent surface 38 can be formed with this slide mold, the process proceeds to step 2200.

  In step 2200, the fourth determining means 16Q determines that the adjacent surface 38 determined to be moldable by the slide mold in step 2500 is to be molded by this slide mold, and proceeds to step 2300.

  In step 2400, for example, if the angle formed by the sliding movement direction (arrow S) and the adjacent surface (angle β in the figure) is not 45 degrees or more (for example, 0 degree), the direct step is performed. Transition to 2300.

  If it is determined in step 2500 that, for example, the adjacent surface whose angle formed with the moving direction of the slide mold is 45 degrees or more in step 2400 cannot be formed by the slide mold, the process proceeds directly to step 2300.

  In step 2300, as described above, it is determined whether or not the evaluated edge is the final edge. If it is not the final edge, the processes in and after step 2000 are performed again.

  If it is determined in step 2300 that the evaluated edge is the final edge and the evaluated surface includes a surface that cannot be formed by the slide mold, the process proceeds to a division determination process (step 6000 and later) described later.

(Processing on opposite surface)
<Third decision processing>
Next, a procedure for determining whether the third determining unit 16P is to mold the opposing surface extracted by the surface extracting unit 16B in step 200 (see FIG. 1) using a mold or a core mold will be described.

  As shown in FIG. 3, in step 3000, the facing surface extracted in step 200 is acquired, and the process proceeds to step 3100.

  In step 3100, it is determined whether the facing surface 22 acquired in step 3000 can be molded with a mold or a core mold based on the mold drawing direction.

  As shown in FIG. 11, specifically, a point on the surface constituting the facing surface 22 is projected in the die-cutting direction (arrow KH), and can be molded with a mold depending on whether there is an obstacle. Or whether it can be molded with a core mold. If it is determined that the facing surface 22 can be molded with a mold or a core, the process proceeds to step 3200.

  As shown in FIG. 3, in step 3200, it is determined whether the facing surface 22 determined to be moldable with the mold or core mold is molded with the mold mold or with the core mold, and the operation ends.

  If there is an opposing surface 22 that cannot be molded with the mold or core mold in step 3100, the process proceeds to a division determination process (step 6000 and later) described later.

(Processing on concave standing wall)
Next, a procedure for determining whether to form the concave standing wall surface 20A (see FIG. 12) determined in step 400 (see FIG. 1) with a preset slide mold will be described.

<Third slide molding discrimination process>
As shown in FIG. 4, in step 3500, the third slide forming determination unit 16 </ b> K acquires the concave standing wall surface 20 </ b> A determined in step 400, and the process proceeds to step 3600.

  In Step 3600, it is determined whether or not the recessed standing wall surface 20A acquired in Step 3500 can be molded with this slide mold based on a preset moving direction of the slide mold (or a slide mold different from Step 1800). To do.

  Specifically, as shown in FIG. 12, a point on the surface constituting the concave standing wall surface 20A is projected in the sliding movement direction (arrow S), and whether or not there is an obstacle, It is determined whether or not molding is possible. If it is determined that the concave standing wall surface 20A can be formed with this slide mold, the process proceeds to step 3700.

  In step 3600, if there is a concave standing wall surface that cannot be formed by the slide mold, the process proceeds to a division determination process (step 6000 and later) described later.

<Fourth slide forming determination process and fifth determination process>
As shown in FIG. 4, in step 3700, the fourth slide forming determination unit 16 </ b> L acquires the edge of the concave standing wall surface 20 </ b> A that has been determined in step 3600 that it can be formed by the slide mold.

  As shown in FIG. 12, specifically, the edges E15 to E18 constituting the concave standing wall surface 20A are acquired, and the process proceeds to Step 3800.

  In step 3800, it is determined whether or not the edges E15 to E18 acquired in step 3700 are concave edges. The edges E15 to E18 are determined to be concave edges, and the process proceeds to Step 3900.

In step 3900, the adjacent surface 40, the adjacent surface 42, the adjacent surface 44, and the adjacent surface 46 adjacent to the edges E15, E16, E17, and E18 determined to be concave edges in step 3700 form the concave standing wall surface 20A. It is determined whether or not the slide mold can be used (see FIG. 12).

  Specifically, as shown in FIG. 12, the points on the adjacent surfaces 40, 42, 44, and 46 are projected in the slide-type moving direction (arrow S), and the slide type is determined by whether or not there is an obstacle. It is determined whether or not molding is possible. If it is determined that the adjacent surfaces 40, 42, 44, 46 can be formed with this slide mold, the process proceeds to step 4000.

  In step 4000, the fifth determining means 16R determines the concave standing wall surface 20A determined to be moldable in the slide mold in steps 3600 and 3900 and the adjacent surfaces 40, 42, 44, 46 adjacent to the concave standing wall surface 20A. Then, it is decided to mold with this slide mold, and the routine goes to Step 4100.

  If it is determined in step 3900 that, for example, the adjacent surface of the concave edge extracted in step 3800 cannot be formed with a slide mold, the process directly proceeds to step 4100.

  In step 4100, it is determined whether or not the evaluated edge is the final edge.

  As shown in FIG. 12, specifically, the adjacent surface that needs to be evaluated is the adjacent surface adjacent to the edges E19, E20, E21, and E22 constituting the adjacent surfaces 40, 42, 44, and 46 determined last. Judge by whether or not there is. Evaluation after step 3800 is performed, and when there is no surface that can be formed by the slide mold for forming the recessed standing wall surface 20A, it is determined as the final edge.

  In the case of the present embodiment, for example, since the adjacent surface 48 adjacent to the edges E19 to E22 needs to be evaluated, it is determined that the edges E19 to E22 are not the final edges, and the process of step 3800 is performed. .

  In step 3800, it is determined whether or not the edges E19 to E22 are concave edges. Since the edges E19 to E22 are convex edges, it is determined that they are not concave edges, and the process proceeds to Step 4200.

  In step 4200, the adjacent surface 48 adjacent to the edges E19 to E22 is compared with the moving direction of the slide type (arrow S).

  As shown in FIG. 19, specifically, when the angle formed by the sliding movement direction (arrow S) and the adjacent surface 48 (angle γ in the figure) is 45 degrees or more, the process proceeds to step 4300. To do.

  As shown in FIG. 4, in step 4300, whether or not the adjacent surface 48 whose angle with the moving direction of the slide mold is 45 degrees or more in step 4200 can be formed by the slide mold for forming the concave standing wall surface 20A. Is determined.

  As shown in FIG. 19, specifically, the point on the adjacent surface 48 is projected in the moving direction of the slide mold (arrow S), and whether or not the slide mold can be formed depending on whether there is an obstacle or not. Is determined. If it is determined that the adjacent surface 48 can be formed with this slide mold, the process proceeds to step 4000.

  In step 4000, the fifth determining means 16R determines that the adjacent surface 48 determined to be moldable by the slide mold in step 4300 is molded by this slide mold, and proceeds to step 4100.

  If it is determined in step 3800 that, for example, the edge acquired in step 3700 is not a concave edge, the process proceeds directly to step 4200.

  In step 4200, for example, if the angle formed by the sliding direction of the slide mold and the adjacent surface (angle β in the figure) is not 45 degrees or more, the process proceeds directly to step 4100.

  Further, when it is determined in step 4300 that, for example, the adjacent surface whose angle with the moving direction of the slide mold is 45 degrees or more in step 4200 cannot be formed by the slide mold for forming the concave standing wall surface 20A. The process proceeds directly to step 4100.

  In step 4100, as described above, it is determined whether or not the evaluated edge is the final edge. If it is not the final edge, the processes in and after step 3800 are performed again.

  If it is determined in step 4100 that the evaluated edge is the final edge and the evaluated surface includes a surface that cannot be formed by the slide mold, the process proceeds to a division determination process (step 6000 and subsequent steps) described later.

(Both standing wall processing)
Next, a description will be given of a procedure in which the second determining means 16N determines whether to form the double standing wall 20B determined in step 500 (see FIG. 1) with a mold or a core mold.

<Second decision process>
As shown in FIG. 5, in step 4400, the second determining means 16 </ b> N acquires both standing wall surfaces 20 </ b> B (see FIG. 14) determined in step 500, and proceeds to step 4500.

  In step 4500, it is determined whether or not both standing wall surfaces 20B acquired in step 4400 are adjacent to one standing wall surface 20E formed by the mold determined in step 1000. Both standing wall surfaces 20B adjacent to the one standing wall surface 20E to be molded by the mold are extracted, and the process proceeds to step 4600.

  In step 4600, a point on the surface of both the standing wall surface 20B adjacent to the one standing wall surface 20E to be molded with the mold is projected onto the cavity mold side, and it is determined whether or not the molding is possible depending on whether there is an obstacle. (See FIG. 16A). If it is determined that both the standing wall surfaces 20B can be molded by the mold, the process proceeds to step 4700.

  In step 4700, it is determined that the both standing wall surfaces 20B determined to be moldable in the mold in step 4600 are molded in the mold, and the process proceeds to step 4800.

  In step 4800, it is determined in step 4700 whether or not there are both standing wall surfaces 20B adjacent to both standing wall surfaces 20B determined to be molded by the mold. When it is determined that there are both other standing wall surfaces 20B adjacent to each other, the processes of step 4600 to step 4800 are performed again on the determined surface.

  On the other hand, if it is determined in step 4800 that the both standing wall surfaces 20B determined in step 4700 and the other both standing wall surfaces 20B are not discriminated, the process proceeds to step 4900.

  If it is determined in step 4500 that the one standing wall surface 20E to be molded with the mold and the both standing wall surfaces 20B are not discriminated, the process proceeds directly to step 4900.

  Further, when it is determined in step 4600 that the determined both standing wall surfaces 20B cannot be molded with the mold, the process directly proceeds to step 4900.

  In step 4900, it is determined whether or not both standing wall surfaces 20B determined in step 500 are adjacent to one standing wall surface 20E formed by the core mold determined in step 1000. It is determined that there is both the standing wall surface 20 </ b> E adjacent to the one standing wall surface 20 </ b> E formed by the core mold, and the process proceeds to step 5000.

  Note that both standing wall surfaces 20B that have already been determined to be molded in the mold at step 4700 are not discriminated at step 4900. That is, priority is given to the surface to be molded by the mold.

  In step 5000, for both standing wall surfaces 20B adjacent to the one standing wall surface 20E to be molded with the core mold, a point on the surface is projected to the core mold side, and it is determined whether or not molding is possible depending on whether there is an obstacle. (See FIG. 16B). If it is determined that the determined both standing wall surfaces 20B can be formed by the core mold, the process proceeds to step 5100.

  In step 5100, it is determined in step 5000 that both standing wall surfaces 20B determined to be moldable in the core mold are molded in the core mold, and the process proceeds to step 5200.

  In step 5200, it is determined whether or not there is another both standing wall surface 20B adjacent to both standing wall surfaces 20B determined to be molded by the core mold in step 5100. When it is determined that there are both other standing wall surfaces 20B adjacent to each other, the processing of Step 5000 to Step 5200 is performed again on the determined surface.

  On the other hand, if it is not determined in step 5200 that there are both standing wall surfaces 20B adjacent to both standing wall surfaces 20B determined in step 5100, the process proceeds to step 5300.

  If it is determined in step 4900 that the both standing wall surfaces 20E adjacent to the one standing wall surface 20E formed by the core mold are not discriminated, the process proceeds directly to step 5300.

  If it is determined in step 5000 that the determined both standing wall surfaces 20B cannot be formed with the core mold, the process directly proceeds to step 5300.

  In step 5300, both standing wall surfaces 20B other than both standing wall surfaces 20B determined to be molded in the mold or core mold in step 4700 and step 5100 (for example, independent both standing wall surfaces 20B) are on the surface. A point is projected on the mold side, and it is determined whether or not the mold can be formed by determining whether there is an obstacle. If it is determined that both the standing wall surfaces 20B can be molded with the mold, the process proceeds to step 5400, and it is determined that the both standing wall surfaces 20B are molded with the mold.

  On the other hand, if it is determined in step 5300 that both standing wall surfaces 20B are determined not to be molded with the mold, the process proceeds to step 5500.

  In step 5500, for both standing wall surfaces 20B determined that the mold cannot be formed in step 5300, a point on the surface is projected to the core mold side, and whether or not there is an obstacle can be molded in the core mold. Determine whether or not. If it is determined that both the standing wall surfaces 20B can be molded with the core mold, the process proceeds to step 5600, where it is determined that both the standing wall surfaces 20B are molded with the core mold, and the process ends.

  If there is both standing wall surfaces 20B that cannot be molded by the core mold in step 5500, the process proceeds to a division determination process (step 6000 and later) described later.

(Processing for surfaces that could not be processed in each process)
Next, regarding the processing of the surface extracted when the process proceeds to the division determination processing in step 600, step 700, step 900, step 1600, step 1700, step 1800, step 2300, step 3100, step 3600, step 4100, and step 5500. explain.

<Division determination processing and sixth determination processing>
As shown in FIG. 6, in step 5900, the division determination unit 16 </ b> S acquires the extracted surface when shifting to the division determination process in each step, and then proceeds to step 6000.

  In step 6000, with respect to the surface acquired in step 5900, the standing wall surface 20 (see FIG. 11) provided with the underside surfaces 24 on both sides or the standing wall surface 20 provided with both the cavity under surface 28A and the core under surface 28B ( Whether or not (see FIG. 15). In step 6000, it is determined that the standing wall surface 20 (see FIG. 11) provided with the underside surfaces 24 on both sides or the standing wall surface 20 (see FIG. 15) provided with both the cavity under surface 28A and the core under surface 28B. If there is a missing surface, the process proceeds to step 6100.

  In step 6100, the standing wall surface 20 (see FIG. 11) provided with the underside surfaces 24 on both sides in step 6000 or the standing wall surface 20 (see FIG. 15) provided with both the cab under surface 28A and the core under surface 28B. It is determined whether the surface that has not been determined to be a slide surface that can be molded with a previously provided slide mold (another slide mold that has not been studied so far). A point on the surface is projected in the moving direction of the slide mold, and whether or not the slide surface can be formed by the slide mold is determined based on whether or not there is an obstacle.

  If it is determined that the surface is a slide surface that can be formed by the slide mold, the process proceeds to step 6200, where the sixth determining means 16T determines that this slide surface is formed by the slide mold, and the process ends.

  On the other hand, if it is determined in step 6100 that the surface cannot be formed by the slide mold, the process proceeds to step 6300, where the sixth determining means 16T determines that this surface cannot be formed by a previously provided mold. It is determined that the process is ended.

  Further, in step 6000, the standing wall surface 20 (see FIG. 11) provided with the underside surfaces 24 on both sides or the standing wall surface 20 (see FIG. 15) provided with both the cab under surface 28A and the core under surface 28B. If so, the process proceeds to step 6400.

  In step 6400, if the standing wall surface 20 provided with both under surfaces 24 or the standing wall surface 20 provided with both the cavity under surface 28A and the core under surface 28B is divided into surfaces, the mold is formed into a mold and a core mold. It is discriminated whether or not it is a dividing plane that can be used.

  As shown in FIGS. 20A and 20B, specifically, the determined point on the surface of the standing wall 20 is projected to the cavity type side or the core type side, and whether there is an obstacle or not. It is determined whether or not molding is possible. When the up arrow is marked with a circle, the starting point of the arrow can be molded with a mold. When the down arrow is marked with a circle, the starting point of the arrow can be molded with a core mold. it can. In addition, when x is described in the upward arrow, the starting point of the arrow cannot be molded with a mold, and when X is described in the downward arrow (see FIG. 21), the starting point of the arrow Cannot be molded with a core mold.

  In the case of the surfaces shown in FIGS. 20A and 20B, there is no point that cannot be molded by both the mold and the core mold, so this surface is determined as a divided surface that can be molded by dividing. .

  On the other hand, in the case of the surface shown in FIGS. 21A and 21B, there is a point that cannot be formed by both the mold and the core mold, and therefore this surface is not discriminated as a divided surface.

  As shown in FIG. 6, when it is determined in step 6400 that the determined standing wall surface 20 is a divided surface that can be formed if it is divided, the process proceeds to step 6500 and the sixth determining means 16T. Determines that this plane is a split plane and ends.

  On the other hand, if it is determined in step 6400 that the surface is not a divided surface, the process proceeds to step 6100, and the processing from step 6100 described above is performed.

<Parting line determination process>
Next, the process in which the parting line determination means 16U determines the parting line of a molded product is demonstrated.

  As shown in FIG. 7, the parting line determination unit 16U includes the above-described Step 1000, Step 2200, Step 3200, Step 4000, Step 4700, Step 5100, Step 5400, Step 5600, Step 6200, Step 6300, Step 6500 determination results are input.

  In other words, the parting line determination unit 16U includes the first determination unit 16M, the second determination unit 16N, the third determination unit 16P, the fourth determination unit 16Q, the fifth determination unit 16R, and the sixth determination unit 16T. The decision result is input.

  Specifically, for each surface of the molded product, it is the parting line whether it is a surface molded by a mold, a surface molded by a core mold, a surface molded by a slide mold, a divided surface, or an absolute under surface. Input to the determination means 16U.

  The parting line determination unit 16U gives different color information to each surface based on these pieces of information.

  For example, the mold surface is orange, the core mold surface is green, the slide mold surface is yellow, the split surface is blue (cyan), and the absolute under surface is red. Give information. When there are a plurality of slide molds, different color information is given to the surface to be molded by each slide mold.

  Further, the parting line determination unit 16U ends the process of determining a parting line by creating a parting line at the boundary of each surface.

  As a result, as shown in FIG. 9, the processed result (color classification, parting line) of the molded product by the parting line determination device 10 is output to the display 14 (see FIG. 9).

  As described above, by using the parting line determination device 10, the engineer determines the parting line of the molded product as compared with the case where the engineer determines the parting line of the molded product while looking at the shape of the molded product. Man-hours required for determination are reduced.

  Further, by using this parting line determination device 10, since an absolute under surface that cannot be molded with a previously provided mold is determined, the man-hour for determining a surface that requires a shape change is reduced.

  In addition, by using this parting line determination device 10, it is possible to determine a dividing surface that can be formed by dividing, so that the number of steps for determining a dividing surface that needs to be divided is reduced, and an engineer can determine the dividing surface. It is possible to examine where the parting line should be set.

  Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is clear to the contractor. For example, in the above-described embodiment, the parting line determination device 10 includes the concave standing wall determination unit 16D, the convex portion determination unit 16E, the cylindrical portion determination unit 16G, the first slide molding determination unit 16H, the second slide molding determination unit 16J, The configuration provided with the third slide forming determining means 16K, the fourth slide forming determining means 16L, the fourth determining means 16Q, the fifth determining means 16R, the division determining means 16S, and the sixth determining means 16T has been described, but it is particularly provided. It does not have to be done.

  Further, the above-described embodiments are illustrated for the purpose of explanation, and the present invention is not limited thereto, and the respective means are appropriately combined as long as they do not contradict the technical idea of the present embodiment. A parting line determination device may be configured.

DESCRIPTION OF SYMBOLS 10 Parting line determination apparatus 16A Normal calculation means 16B Surface extraction means 16C Both standing wall extraction means 16D Concave standing wall discrimination means 16E Convex part discrimination means 16F One wall extraction means 16G Cylindrical part discrimination means 16H First slide shaping discrimination means 16J Second slide molding determining means 16K Third slide molding determining means 16L Fourth slide molding determining means 16M First determining means 16N Second determining means 16P Third determining means 16Q Fourth determining means 16R Fifth determining means 16S Division determining means 16T Sixth determining means 16U Parting line determining means 20 Standing wall surface 20A Concave standing wall surface 20B Both standing wall surfaces 20E One standing wall 20
22 Opposing surface 24 Both side under surface 28A Cab under surface 28B Core under surface 30 Adjacent surface 32 Adjacent surface 34 Adjacent surface 36 Cylindrical portion 38 Adjacent surface 40 Adjacent surface 42 Adjacent surface 44 Adjacent surface 46 Adjacent surface 48 Adjacent surface 52 Convex portion 54 Convex Part 56 Adjacent surface 58 Adjacent surface

Claims (8)

Normal calculation means for acquiring surface information of a molded product and calculating normals of arbitrary normal calculation points on each surface;
Based on the direction of the normal of each surface calculated by the normal calculation means, and the preset relative movement direction of the mold and core forming the mold for forming the molded product, About the surface constituting the surface of the molded product, a standing wall surface standing along the die-cutting direction, and a surface extracting means for extracting a facing surface facing the cavity mold or the core mold,
Both standing wall discriminating means for discriminating whether or not the standing wall surface extracted by the surface extracting means is a both standing wall surface that can be molded by both the mold and the core mold,
Whether the standing wall surface that is not determined to be moldable by both the mold and the core mold by the both standing wall determination means is a one-standing wall surface that can be molded by either the mold or the core mold. Standing wall discriminating means for discriminating
Based on the determination result of the one standing wall determining means, the first determining means for determining whether the one standing wall surface is molded with a mold or a core mold,
Based on the determination result of the first determination means, the second determination means for determining whether to mold with a mold or a core mold for the both standing wall surfaces;
Third determination means for determining whether to mold with a mold or a core mold for the facing surface extracted by the surface extraction means;
At least a parting line determination unit that determines parting of a molded product based on determination results of the first determination unit, the second determination unit, and the third determination unit;
A parting line determination device comprising: The surface extraction means includes a normal direction of each surface calculated based on the normal line calculation means, and a cavity mold and a core mold that constitute a mold for molding the molded product. Based on the relative movement direction, for the surfaces constituting the surface of the molded product, further extract both under surfaces that cannot be molded by either the mold or the core mold,
Cylindrical part discriminating means for discriminating whether or not both of the under surfaces extracted by the surface extracting means constitute a cylindrical cylindrical part;
A first slide molding discriminating unit for discriminating whether or not the cylindrical part determined by the cylindrical part discriminating unit can be molded by the slide mold based on a preset moving direction of the slide mold;
Second slide molding discriminating means for discriminating whether or not molding can be performed with this slide mold for the adjacent surface adjacent to the cylindrical portion that has been discriminated as being capable of being molded with the slide mold by the first slide molding discriminating means;
About the cylindrical portion determined to be moldable by the slide mold by the first slide molding determining means and the adjacent surface adjacent to the cylindrical portion determined to be moldable by the slide mold by the second slide molding determining means A fourth determining means for determining to form with a slide mold,
The parting line determination means determines parting of a molded product based on determination results of at least the first determination means, the second determination means, the third determination means, and the fourth determination means. The parting line determination device according to 1. Concave standing wall for discriminating whether or not the standing wall surface standing along the die-cutting direction extracted by the surface extraction means is a concave concave wall surface that cannot be molded by both the mold and the core mold Discrimination means;
A third slide molding discriminating means for discriminating whether or not the concave standing wall surface discriminated by the concave standing wall discriminating means can be molded by this slide mold based on a preset moving direction of the slide mold;
A fourth slide molding discriminating means for discriminating whether or not molding can be performed with this slide mold for the adjacent surface adjacent to the concave standing wall surface determined to be moldable with the slide mold by the third slide molding discriminating means;
The concave standing wall surface determined to be moldable by the slide mold by the third slide molding determining means, and the adjacent surface adjacent to the concave standing wall surface determined to be moldable by the slide mold by the fourth slide molding determining means And fifth determining means for determining to form with the slide mold,
The parting line determination means includes at least a party of molded products based on the determination results of the first determination means, the second determination means, the third determination means, the fourth determination means, and the fifth determination means. The parting line determination apparatus according to claim 2, wherein the parting line determination unit determines a ring. Concerning the standing wall surface that has not been determined to be moldable by both the cavity mold and the core mold by the both standing wall discriminating means, there is a convex protrusion that cannot be molded by either the cavity mold or the core mold. Convex portion determining means for determining whether or not a standing wall surface is provided;
About the standing wall surface provided with the convex portion discriminated by the convex portion discriminating means, and the surface that is impossible to be molded by the respective means by the mold, the core die, and the slide die, the mold and A division determining means for determining whether the core mold is divided and moldable, a slide surface that can be molded with another slide mold, or an absolute under surface that cannot be molded with a predetermined mold configuration;
Forming a slide surface determined by the division determination unit with a slide mold, a sixth determination unit that determines that the division surface is a division surface, and that the absolute under surface is an absolute under surface; Prepared,
The parting line determination means is formed based on the determination results of the first determination means, the second determination means, the third determination means, the fourth determination means, the fifth determination means, and the sixth determination means. The parting line determination apparatus according to claim 3, wherein the parting line determination unit determines parting of a product. Computer
Normal calculation means for acquiring surface information of a molded product and calculating normals of arbitrary normal calculation points on each surface;
Based on the direction of the normal of each surface calculated by the normal calculation means, and the preset relative movement direction of the mold and core forming the mold for forming the molded product, About the surface constituting the surface of the molded product, a standing wall surface standing along the die-cutting direction, and a surface extracting means for extracting a facing surface facing the cavity mold or the core mold,
Both standing wall discriminating means for discriminating whether or not the standing wall surface extracted by the surface extracting means is a both standing wall surface that can be molded by both the mold and the core mold,
Whether the standing wall surface that is not determined to be moldable by both the mold and the core mold by the both standing wall determination means is a one-standing wall surface that can be molded by either the mold or the core mold. Standing wall discriminating means for discriminating
Based on the determination result of the one standing wall determining means, the first determining means for determining whether the one standing wall surface is molded with a mold or a core mold,
Based on the determination result of the first determination means, the second determination means for determining whether to mold with a mold or a core mold for the both standing wall surfaces;
Third determination means for determining whether to mold with a mold or a core mold for the facing surface extracted by the surface extraction means;
At least a parting line determination unit that determines parting of a molded product based on determination results of the first determination unit, the second determination unit, and the third determination unit;
Parting line determination program to function as. The surface extraction means includes a normal direction of each surface calculated based on the normal line calculation means, and a cavity mold and a core mold that constitute a mold for molding the molded product. Based on the relative movement direction, for the surfaces constituting the surface of the molded product, further extract both under surfaces that cannot be molded by either the mold or the core mold,
Cylindrical part discriminating means for discriminating whether or not both of the under surfaces extracted by the surface extracting means constitute a cylindrical cylindrical part;
A first slide molding discriminating unit for discriminating whether or not the cylindrical part determined by the cylindrical part discriminating unit can be molded by the slide mold based on a preset moving direction of the slide mold;
Second slide molding discriminating means for discriminating whether or not molding can be performed with this slide mold for the adjacent surface adjacent to the cylindrical portion that has been discriminated as being capable of being molded with the slide mold by the first slide molding discriminating means;
About the cylindrical portion determined to be moldable by the slide mold by the first slide molding determining means and the adjacent surface adjacent to the cylindrical portion determined to be moldable by the slide mold by the second slide molding determining means A fourth determining means for determining to form with a slide mold,
The parting line determination means determines the parting of the molded product based on at least the determination results of the first determination means, the second determination means, the third determination means, and the fourth determination means. The parting line detection program according to claim 5 for functioning. Concave standing wall for discriminating whether or not the standing wall surface standing along the die-cutting direction extracted by the surface extraction means is a concave concave wall surface that cannot be molded by both the mold and the core mold Discrimination means;
A third slide molding discriminating means for discriminating whether or not the concave standing wall surface discriminated by the concave standing wall discriminating means can be molded by this slide mold based on a preset moving direction of the slide mold;
A fourth slide molding discriminating means for discriminating whether or not molding can be performed with this slide mold for the adjacent surface adjacent to the concave standing wall surface determined to be moldable with the slide mold by the third slide molding discriminating means;
The concave standing wall surface determined to be moldable by the slide mold by the third slide molding determining means, and the adjacent surface adjacent to the concave standing wall surface determined to be moldable by the slide mold by the fourth slide molding determining means And fifth determining means for determining to form with the slide mold,
The parting line determination means includes at least a party of molded products based on the determination results of the first determination means, the second determination means, the third determination means, the fourth determination means, and the fifth determination means. The parting line detection program according to claim 6, wherein the parting line detection program is made to function so as to determine the ping. Concerning the standing wall surface that has not been determined to be moldable by both the cavity mold and the core mold by the both standing wall discriminating means, there is a convex protrusion that cannot be molded by either the cavity mold or the core mold. Convex portion determining means for determining whether or not a standing wall surface is provided;
About the standing wall surface provided with the convex portion discriminated by the convex portion discriminating means, and the surface that is impossible to be molded by the respective means by the mold, the core die, and the slide die, the mold and A division determining means for determining whether the core mold is divided and moldable, a slide surface that can be molded with another slide mold, or an absolute under surface that cannot be molded with a predetermined mold configuration;
Forming a slide surface determined by the division determination unit with a slide mold, a sixth determination unit that determines that the division surface is a division surface, and that the absolute under surface is an absolute under surface; Prepared,
The parting line determination means is formed based on the determination results of the first determination means, the second determination means, the third determination means, the fourth determination means, the fifth determination means, and the sixth determination means. 8. The parting line detection program according to claim 7, wherein the parting line detection program functions to determine parting of an article.

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