JP2010120260A - Matrix for mold, method of manufacturing mold, and shaping mold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve product quality and reduce manufacturing cost by eliminating traditional work dependent on field workers'intuitions. <P>SOLUTION: The matrix which has a runner part constituting the flow path for a molten resin and one or two or more product parts is employed as a mold for moldings the shape of which is duplicated by injection molding. The matrix is shaped with a shaping apparatus driven by numerical control. The mother mold for the moldings and a shaping mold copied from the shaping surface of the mold for injection molding are shaped with a shaping apparatus driven by numerical control. The mold for injection molding is formed using the shaping mold equipped with the mother mold as the mother mold. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an original mold for a mold used for forming an injection-molded product, a method for manufacturing the mold, and a shaping mold used for forming the mold.

Conventionally, as a general mold manufacturing method, a method of forming by cutting and a method of forming using a casting mold are known. In the method of forming by cutting, machine design is mainly performed using CAD, and the design information is converted into machining information for a machining center to automatically perform cutting. However, in the case of an industrial product, the shape of a part is designed in consideration of the processing method, the operation of a tool used for cutting, and the like, so even a mold that requires precision can be manufactured. However, it is extremely difficult to design the shape using CAD, when the eyes and mouth are provided on the face of a small doll, or when a fine shape is formed by engraving is used for cutting. It is also impossible to form a recess that is finer than the diameter of the blade.
It is theoretically possible to generate shape data for modeling equipment using modeling software that can express fine shapes and use it as CAM data, but at this time, data conversion should be performed smoothly. There is no tool that can use the data generated by the modeling software as CAM data. Specifically, the data for CAD / CAM is data obtained by digitizing lines or surfaces that have no concept of the thickness of the object. On the other hand, modeling software called “FreeForm”, which will be described later, is capable of representing and manipulating the shape of objects using voxel data of a concept that stacks solid fine cubes. For this reason, processing on data such as shaving and fleshing is easy, but changing this data to CAD / CAM data is not easy because the data concept itself may be different. Absent. Further, it takes much time and money to develop such a data conversion tool and to prepare a work environment.
On the other hand, a mold using a casting mold is a model that directly replicates in the shape of the original model, so that it is possible to express fine irregularities represented in the model. However, the manufacture of molds is different from overseas contractors, and the fact is that all the work is left to local craftsmen and workers. Originally, the mold should be made exactly as the original, but in the manufacturing process, priority may be given to the draft of the molded product and the ease of making the mold, and the original shape may be changed arbitrarily. .

Conventionally, an assembly model in which plastic parts are assembled and formed is known. As described in Patent Document 1, model parts used for the assembly model are connected to a frame called a runner. That is, a plurality of model parts used for assembly are formed as a molded product connected in large numbers in a frame-like runner.
Regarding the mold used for forming the assembly model, the manufacturing process of the mold using the casting mold will be described with reference to FIGS.
(Process 1)
First, as shown in FIG. 17, a prototype 101 of a model part is formed manually by a human. The prototype 101 is formed using a material that is easy to process. When forming a plurality of types of model parts, a prototype is formed for each model part. However, since a prototype created by a human being is manufactured manually, it is extremely difficult to create a uniform thickness shape as shown in the figure, and the thickness is not uniform.
And since a soft material is used in a process, an edge may become loose. In addition, overseas workers who do not know the original design, which is the motif, may make modifications based on easy judgment and change it into a shape different from the original character design.
(Process 2, Process 3)
In a predetermined container, about half of the prototype 101 is filled in gypsum kneaded with water and hardened. Then, silicon resin is poured into the container to form a female mold 103 made of silicon resin with the surface of the hardened gypsum block 102 and the original mold 101 protruding from the surface as a male mold. The boundary surface between the gypsum block 102 and the silicon female mold 103 becomes a bonding surface (parting line) of the mold divided into two.
(Step 4, Step 5)
Next, a casting mold 104 is formed using the silicon female mold 103. In the casting mold 104, the silicon female mold 103 is immersed in a mixture of ceramic powder and water or solvent, and if necessary, air is removed by a defoamer, and the ceramic is solidified by drying or scientific reaction. Then, the silicon female mold 103 is extracted from the solidified ceramic lump and then the ceramic lump is baked at a high temperature. By such a process, a casting mold 104 having a shape obtained by inverting the silicon female mold 103 is formed. (Step 6)
Next, beryllium copper, stainless steel, iron or other molten metal is poured into the casting mold 104 and solidified in the casting mold 104.
(Step 7)
Then, a metal lump obtained by crushing and solidifying the casting mold 104 is obtained as a molding die 105. The molding die 105 thus formed is one of the dies configured as a two-part body.

(Steps 8 and 9)
Next, as shown in FIG. 18, another molding die 108 that forms a pair with the molding die 105 is formed using the molding die 105 formed in the above process.
First, the molding die 105 is mounted in a predetermined container. Then, the original mold 101 is mounted on the mold surface of the molding mold 105, and in this state, silicon is poured into the container and solidified to form a silicon female mold 106.
(Step 10, Step 11)
Next, a casting mold 107 is formed by using the silicon female mold 106 in the same manner as in Steps 4 and 5 described above.
(Step 12, Step 13)
Next, a molding die 108 is created using the casting mold 107 by the same method as in the above-described steps 6 and 7. Through the above steps, a molding die 108 that forms a pair with the molding die 105 is formed.

When the molded product acquired as the final product is an assembly model such as a plastic model, a plurality of parts (products) are formed by one molding die. At that time, a runner serving as a material flow path is formed on the molding die so that the molding material is distributed in the molding space in which each part is formed.
FIG. 19 shows an example of a molding die (a pair of two) formed by the above process. At the stage of the molding die formed by the above process, as shown in FIG. 19 (a), runners serving as passages for injecting molding materials into the molds 110a to 110d forming the respective parts are not formed.
FIG. 19B is an external perspective view of the molding die (105, 108) showing a state in which the runner 111 is formed. The runner 111 is formed by cutting after forming the molds 110a to 110d in the shape of a prototype, and the arrangement, shape, and the like thereof are determined by the intuition and experience of the operator.
Japanese Patent Publication No. 2-5103

A mold for injection molding used for a plastic model is formed by joining two molds to each part as an assembly element. And when forming a metal mold | die, it was performed by a worker's intuition, experience, and manual work including the position which the joining surface (parting line) of a metal mold | die is conventionally set to. In addition, as described above, the shape and arrangement of the runners have been performed by the intuition, experience and manual work of field workers. In addition, when multiple parts are formed with a single mold, the prototypes for each part are formed independently, so how to place each prototype and join it to a single runner It was done by the intuition, experience and manual work of the person. As a result, the mold becomes large, which causes the initial cost to increase. In addition, since solid molded products are subject to shrinkage after molding, and the shape is deformed, when forming a mold based on a solid original mold, the outer portion is further formed into a thin shell from the original mold. The prototype formed in the above is created manually. Therefore, the thickness is likely to be non-uniform, and it is difficult to obtain molded products and molds with stable quality.
As described above, in the conventional mold formation, the items related to molding quality such as setting of parting lines and placement of runners all depend on the intuition and experience of individual workers and manual work at the manufacturing site. It was. In addition, all the items that affect the manufacturing cost and product cost of the mold, such as which parts are formed with a single mold and how large the mold is, are all workers on the manufacturing site. The fact was left to the individual.
In view of the above-mentioned problems, the present invention enables the basic matters relating to the mold formation from the production of the prototype to be set on the product design side, not on the mold production site. The purpose is to stabilize product development and reduce manufacturing costs.

In order to solve the above problems, the present invention has the following configuration. That is,
A prototype of a molded product whose shape is duplicated by an injection mold,
An original mold for a mold having a runner part constituting a flow path of a molten resin and one or more product parts connected to the runner part.

  Further, the present invention is characterized in that the mold master is formed by a modeling apparatus that is driven by numerical control.

Moreover, the manufacturing method of the metal mold | die which concerns on this invention is the following.
While forming an original mold of a molded product formed by injection molding and a modeling mold imitating a molding surface of an injection molding mold for forming the molded product by a modeling apparatus that is driven by numerical control,
The injection mold is formed by using a modeling mold on which the prototype is mounted as a mold forming mold.

Moreover, the manufacturing method of the metal mold | die which concerns on this invention is the following.
While forming a molding die that imitates a molding surface of a two-part injection molding die that is joined to the original mold of the molded product formed by injection molding, by a modeling device that is driven by numerical control,
Each of the molds for injection molding divided into two is formed by using the modeling mold with the mold as a mold for forming a mold.

Further, the present invention provides a method for manufacturing the mold,
The prototype of the molded product has a runner part constituting a flow path of a molten resin and one or more product parts connected to the runner part.

The invention of the present application is characterized by having the following configuration. That is,
A molding die that forms one of two divided injection molds that are joined together.
A joining surface where the injection molds are in contact with each other;
An engaging part for guiding or guiding the joining of the injection molds;
A molding die characterized in that an original shape of a molding formed by injection molding is integrally formed on a joint surface of the injection molding die.

  Moreover, this invention has the runner part which the said original shape comprises the flow path of molten resin, and the 1 or 2 or more product part connected to the said runner part, It is characterized by the above-mentioned.

  The present invention is characterized in that the modeling mold is formed by a modeling apparatus driven by numerical control.

The mold for forming a mold according to the present invention has a molded product required as a product such as a model part and a runner portion serving as a passage for supplying molten resin to the molded product. . Therefore, since the shape, arrangement, size, and the like of the runner can already be determined at the prototype stage, there is no need to rely on the intuition of individual workers at the site as in the past. Therefore, the present invention can obtain effects such as shortening of the mold manufacturing period, cost reduction, and quality stabilization. In addition, the shape of the molded product as the final product is the same as the original shape and can be visually recognized by the worker, so it is easy to convey the image of what molded product must be made to the worker. It has become a thing.
Moreover, although a metal mold | die forms a predetermined shaping | molding space by joining two metal mold | dies, this invention can set arbitrarily the joining surface of the said metal mold | die by forming a shaping die. It can be done. In other words, the work of the design creator can be performed based on the original design based on the intuition and experience of the field workers. As a result, even if the number of products (parts) that can be attached to one runner increases, it is possible to mold with stable quality by accurately setting an appropriate dividing surface (parting line) for each product. It has the effect that the metal mold | die which can be provided can be provided.

Hereinafter, the best mode for carrying out the present invention will be described in accordance with a procedure for forming a plastic model (model) shown in FIG. In addition, although this specification demonstrates as an example the case where the molded article formed by injection molding is a model, this Embodiment is utilized not only for formation of a model but toys, industrial products, etc. Is.
FIG. 1 shows an already shelled model 1 which is a plastic model formed as an injection molded product, and FIG. 1A shows a model part 2a and a model part 2b constituting the model 1. FIG. 1 (b) shows an external view of the model 1 in which the model component 2a and the model component 2b are joined to each other. The model part 2a and the model part 2b divided into two parts constituting the model 1 are injection molded together with the runner 3 as one molded product.

2A shows a plan view of a model component 2a and a model component 2b (hereinafter referred to as “molded product 4”) injection-molded as one molded product together with the runner 3, and FIG. 2B shows FIG. The cross-sectional view along the AA ′ line of the molded product 4 shown in FIG.
A molded product 4 shown in FIG. 2 is an injection molded product formed as a plastic model for constructing the model 1 by assembling parts. The illustrated example shows an example in which two model parts are provided on one frame-like runner 3, but it is a matter of course that a large number of model parts may be provided on one runner. Hereinafter, as an example, a manufacturing procedure of the molded product 4 in which the runner 3 and the model parts 2a and 2b are integrally formed by injection molding will be described.

In the present embodiment, the design of each part constituting the model and the model is performed on the computer. Then, by outputting the shape data (modeling data) designed on the computer to a predetermined modeling apparatus, a model part can be acquired as an actual three-dimensional object that can be taken. The computer includes a control device including a CPU, a keyboard, a mouse, an input device dedicated to modeling software, a display display, a storage device, a communication device, and the like.

The system used for model and mold production uses, for example, modeling software called “FreeForm” developed by SensAble Technologies in the United States. The modeling software can display a three-dimensional object image on a display, and can process and edit the shape with an image of carving, cutting, and adding the three-dimensional object image.
Further, the shape data can be obtained by measuring the shape of an actually existing object three-dimensionally, in addition to the case of forming from the beginning using the modeling software. Then, the formed or acquired shape data can be embodied as a three-dimensional object that actually exists by the modeling apparatus.
The modeling apparatus includes an optical modeling apparatus that forms a three-dimensional object while irradiating ultraviolet rays or the like to cure a resin, a laminated modeling apparatus that three-dimensionally laminates a heated wax-like material, chemical wood, and light metal There are cutting devices and other various devices. In this embodiment, an optical modeling apparatus is used as an example. In addition, since a modeling thing may deform | transform depending on the property peculiar to a modeling apparatus, the magnitude | size of a modeling thing, and other modeling conditions, the optimal modeling apparatus and conditions are selected suitably. It is also possible to form a single prototype by combining different types of modeling apparatuses.

The present invention is characterized by the manufacturing process of the mold used for injection molding and the form of the original mold used when producing the mold. Specifically, like the molded product 4 described above, It is characterized in that a plurality of model parts used as products are attached to the runner.
In the present embodiment, a prototype used for mold production is designed using the above-described modeling software, and is manufactured (output) using a modeling apparatus. Specifically, after designing a plurality of model parts constituting the model in the modeling software, respectively, forming modeling data obtained by combining the plurality of model parts and the shape of the runner, and a model with a runner based on the modeling data The part is formed as a prototype of the molded product 4 described above. It is one of the features of the present invention to use such a model having the same shape as the model part (product) with a runner as a mold for forming a mold.

An outline of a procedure for creating modeling data (hereinafter referred to as “first prototype data”) of a model part including the runner will be described.
First, when there are a plurality of model parts, modeling data for each model part is created individually. The modeling data of the model part alone is data relating to the shape used for forming the model object 2a and the model object (original model) of the model part 2b in the example described above.

Next, the outer size of the mold is set in advance. When the outer shape size of the mold is increased, the molding machine to be used is increased in size, which increases the manufacturing cost of the molded product. Therefore, it is preferable that the mold is as small as possible, as long as the trouble is within. Moreover, it is preferable that the outer dimensions of the frame-shaped flow path formed as a runner are small. In consideration of these points, the runner and each component are placed in the modeling software so that the runner and each model part can be placed in a mold as small as possible. At this time, the runner is arranged in consideration of the flow of the molten resin at the time of injection molding. Furthermore, if necessary, flow analysis of the molten resin is performed, and the thickness and arrangement of the runners are determined while verifying whether the resin is sufficiently supplied to the mold part of each model part.
As described above, modeling data (first prototype data) relating to the same shape as the molded product 4 in which the runner is provided with a plurality of model parts is created. And based on the said 1st original data, the modeling object (1st modeling object 5) of the same shape as the molding 4 as shown in FIG. 3 used as a prototype is formed using a predetermined modeling apparatus. .
Conventionally, on-site workers have determined the setting of the outer size of the mold, the arrangement of the mold parts constituting each component, the setting of the runner position, and the like based on experience and intuition. However, in the present embodiment, the designer can create the first prototype data for determining the shape of the mold at the design stage, and can create the first prototype based on the first prototype data. It is like that.

Next, modeling data for forming a modeled object having the same shape as one of the injection molds composed of the A mold and the B mold configured as a two-divided body using the first prototype data Create Hereinafter, as an example, a case where modeling data for forming a modeled object (hereinafter referred to as “modeling mold A”) having the same shape as the A mold will be described.
The actual molding is divided into a part formed by the A mold and a part formed by the B mold on the bonding surface of the mold. The boundary surface (boundary line) between the A mold and the B mold is generally called a parting line, but when creating modeling data of the modeling mold A, the point where the parting line is provided Determine by performing a simulation considering the volume and shape of the molding space.
In injection molding using a mold, it is extremely important that the molded product does not come out smoothly from the mold, so it is very important to determine the setting of the parting line, the necessity of division, etc. ing. However, since most cases in the conventional method are performed by on-site workers who are not planners or designers, there are many cases in which the modeling itself is changed sweetly when the omission is bad.

When forming the mold, if the runner is configured as a two-dimensional frame-like body provided on the same plane, the parting line is usually placed at a position that divides the center of the runner into two vertically. Set. When forming a model part with a large shape, etc., there are cases where the runner is three-dimensionally bent up and down to form a three-dimensional shape. In that case, the core part protruding from the joint surface of the mold and A cavity portion corresponding to the core portion is formed, and a parting line of the runner is also formed according to the position.
And when creating modeling data of modeling mold A, after setting the parting line in consideration of the shape, volume, the position of the gate used for resin injection, etc. for each model part, Generate. Since this work can be performed in the modeling software, unlike the conventional process at the mold manufacturing site, it is possible to determine the shape of the mold on the designer side instead of leaving it to the site. ing.

The modeling data of the modeling mold A is based on a shape having a concave portion 6 obtained by inverting the first prototype which is a convex shape and parting line position data set so as to bisect the first prototype. It is formed.
FIG. 4 is an explanatory diagram of the modeling mold A formed based on the modeling data of the modeling mold A. The flat surface of the modeling mold A surface is a surface that constitutes a joint surface with the B mold, and is a surface that becomes a parting line PL when the mold is formed. A concave portion 6 is formed on the surface of the modeling mold A as an inverted mold on one side of the first original mold. Moreover, the hole 29 is formed in the at least 2 corner | angular part located in the diagonal relationship of the modeling type A surface formed in the rectangle. The said hole 29 is a site | part for forming the pin 30 in the B metal mold | die 14 mentioned later, and is used in order to join A metal mold | die and B metal mold | die accurately.

Next, after forming the 1st modeling object 5 and the modeling type A using a predetermined modeling apparatus as mentioned above, a shaping die is created. As a rough order of forming the molds, first, the first mold 5 and the mold A are used to form the B mold 14, and then the B mold 14 and the first model 5 are used to create the A This is performed in the order of forming the mold 25. Details will be described below.
First, as shown in FIG. 5A, the first model 5 described above is attached to the modeling mold A.
In the present embodiment, when the first model 5 is mounted, a half of the round bar-shaped runner 7 is projected from the parting line PL on the surface of the mold A.
And as shown in FIG.5 (b), the modeling type | mold A which mounted | wore with the 1st molded article 5 is put in the predetermined container 8 or a frame. Then, a space 9 having a predetermined volume is formed on the side of the container 8 where the first model 5 is mounted, and silicon resin is poured into the space 9 to form a silicon mold S1 having the shape shown in FIG. The silicon mold S1 has the same molding surface as the B mold 14 to be formed later.

  Next, the silicon mold S1 is accommodated in a predetermined container 10 or a frame (FIG. 6B). Then, ceramic powder kneaded by adding water or a predetermined solvent is injected into a space 11 having a predetermined volume provided on the molding surface side of the silicon mold S1, and dried and solidified while performing deaeration. Then, after the silicon mold S1 is extracted, when the dried and solidified ceramic powder is fired at a predetermined temperature, a casting having a molding surface having the same shape as the outer shape of the silicon mold S1 on the inner surface as shown in FIG. A mold 12 is formed.

  Then, the casting mold 12 is formed so as to be able to inject molten metal (FIG. 7A), and melted beryllium copper, iron, stainless steel or the like is poured into the casting mold 12 and solidified (FIG. 7B). ). When the cast metal 12 is destroyed after the injected metal is solidified, a B mold 14 that is a metal mold can be obtained (FIG. 7C).

Next, the procedure for forming the A mold will be described.
First, the first model 5 formed by the modeling apparatus is mounted on the B mold 14 formed by the above-described process (FIG. 8A). Since the molding surface formed on the B mold 14 is originally modeled on the first model 5, the first model 5 can be in close contact with the surface of the B mold 14 with almost no gap. .
And as shown in FIG.8 (b), the B metal mold | die 14 with which the 1st molded article 5 was mounted | worn is put in the predetermined container 20 or a frame. Next, a space 21 having a predetermined volume is formed on the side on which the first modeled object 5 is mounted, and silicon resin is poured into the space 21 to form a silicon mold S2 having a shape shown in FIG. The silicon mold S2 has the same molding surface as the A mold 25 to be formed later.

Next, the silicon mold S2 is accommodated in a predetermined container 22 or a frame (FIG. 9B), and water or a predetermined solvent is added to a space 23 having a predetermined volume provided on the molding surface side of the silicon mold S2. In addition, the kneaded ceramic powder is poured and dried and solidified while performing deaeration. Then, after removing the silicon mold S2, the dried and solidified ceramic powder is fired at a predetermined temperature, whereby a casting mold 24 having a molding surface having the same shape as the silicon mold S2 is formed on the inner surface (FIG. 9). (C)).
Then, the casting mold 24 is formed in such a state that molten metal can be injected (FIG. 10A), and beryllium copper, iron, stainless steel, etc., melted into the casting mold 24 is solidified (FIG. 10B). ). After the injected metal is solidified, when the casting mold 12 is destroyed and removed, an A mold 25, which is a metallic mold, is formed (FIG. 10C).

  The A mold 25 formed by the above process is provided with a connection port 26 for connection with an injection nozzle of the injection molding machine and a passage 27 for communicating the connection port 26 with the runner portion 28 (FIG. 11). Further, a positioning hole 31 and a pin 30 which are fitted to each other are provided on the joint surface of the A mold 25 and the B mold 14 so that the mold parts can be accurately aligned. ing.

Next, a second embodiment relating to a method for manufacturing a molding die will be described.
In the above example, as a procedure for forming a molding die, first, a first model 5 and a model A are formed, and then the first model 5 and model A are used. B mold 14 is created,
The A mold 25 is formed using the first modeled object 5 and the B mold 14. On the other hand, in the second embodiment, the A mold 25 is formed by the following method. That is, the modeling mold B (FIG. 12A) having the same molding surface as the B mold 14 was formed by the same method as the modeling mold A, and the first model 5 was superposed by the method described above. A silicon mold is acquired using the modeling mold B (FIG. 12B), a casting mold is formed using the silicon mold, and an A mold 25 is acquired using the casting mold. . The B mold 14 is formed using the first model 5 and the model A as described above.
The first model 5, model A and model B are individually formed by the modeling apparatus, but are formed on the basis of the shape data of the injection-molded product acquired as the final product. It is. Accordingly, the B mold 14 manufactured based on the first model 5 and the modeling mold A and the A mold 25 manufactured based on the first model 5 and the modeling mold B form a molding space with high accuracy. It is possible to form a predetermined molded product.

Next, a description will be given of a third embodiment relating to a method for manufacturing a molding die.
The method for manufacturing the molding die described above firstly forms an original mold having the same shape as the injection-molded product formed by the mold, and a shaping mold having the same shape as one or both molds (molding surface), Using these original mold and modeling mold, a molding die is formed through a manufacturing process of a silicon mold and a casting mold. On the other hand, the molding die manufacturing method described below omits the manufacturing process of the original mold having the same shape as the injection-molded product from the above-described processes. Hereinafter, a description will be given with reference to FIGS.

FIG. 13A shows a modeled object output by the modeling apparatus, which is a casting model C1 in which a molding surface having the same shape as the first model 5 is mounted on the model A in the above embodiment.
The casting prototype C1 is accommodated in a predetermined container 40 (FIG. 13B), and silicon resin is poured into the space 41 formed in the container 40 to obtain a silicon mold S3 (FIG. 13C).
In the process after the silicon mold S3 is formed, the casting mold 42 is formed by the same method as in the above-described example (FIG. 14A), and the casting mold 42 is used for predetermined melting with the casting mold 42. By injecting the metal, a molding die 43 similar to the above-described example can be manufactured (FIG. 14B).

Similarly, a casting prototype C2 in which a molding surface having the same shape as the state in which the first prototype 5 is mounted on the modeling die B in the above embodiment is formed by a modeling apparatus (FIG. 15A).
The casting prototype C2 is accommodated in a predetermined container 44 (FIG. 15 (b)), and silicon resin is poured into the space 45 formed in the container 44 for individualization to obtain a silicon mold S4 (FIG. 15 (c)).
The process after the silicon mold S3 is formed is the example described above by forming the casting mold 46 by the same method as the above-described example and injecting a predetermined molten metal into the casting mold 46 (FIG. 15A). A molding die 47 similar to the above can be manufactured (FIG. 15B).

  The present invention can be used for various products for injection molding.

It is an external appearance perspective view of the model components formed by injection molding. It is explanatory drawing of the model components injection-molded integrally with the runner. It is explanatory drawing (side part sectional drawing) of the molded article used as a prototype. It is explanatory drawing (side part sectional drawing) of the modeling type | mold formed based on modeling data. It is explanatory drawing regarding the manufacturing procedure of a metal mold | die. It is explanatory drawing regarding the manufacturing procedure of a metal mold | die. It is explanatory drawing regarding the manufacturing procedure of a metal mold | die. It is explanatory drawing regarding the manufacturing procedure of a metal mold | die. It is explanatory drawing regarding the manufacturing procedure of a metal mold | die. It is explanatory drawing regarding the manufacturing procedure of a metal mold | die. It is explanatory drawing (side part sectional drawing) of a metal mold | die. It is explanatory drawing of the metal mold | die manufacturing procedure which concerns on a 2nd Example. It is explanatory drawing of the metal mold | die manufacturing procedure which concerns on a 3rd Example. It is explanatory drawing of the metal mold | die manufacturing procedure which concerns on a 3rd Example. It is explanatory drawing of the metal mold | die manufacturing procedure which concerns on a 3rd Example. It is explanatory drawing of the metal mold | die manufacturing procedure which concerns on a 3rd Example. It is explanatory drawing regarding the conventional metal mold | die manufacture. It is explanatory drawing regarding the conventional metal mold | die manufacture. It is explanatory drawing regarding the conventional metal mold | die manufacture.

Explanation of symbols

1 Model 2a Model part 2b Model part 3 Runner 4 Molded product 5 First model (prototype)
6 concave portion 7 runner 8 container 9 space 10 container 11 space 12 casting mold 14 B mold 20 container 21 space 23 space 24 casting mold 25 A mold 26 connection port 27 passage 28 runner section 29 hole 30 pin 31 hole 40 container 41 Space 42 Casting mold 43 Molding mold 44 Container 45 Space 46 Casting mold 47 Molding mold C1 Casting mold C2 Casting mold PL Parting line (joint surface)
S1 silicon type S2 silicon type S3 silicon type S4 silicon type

Claims (8)

A prototype of a molded product whose shape is duplicated by an injection mold,
An original mold for a mold having a runner part constituting a flow path of a molten resin and one or more product parts connected to the runner part.   2. The mold prototype according to claim 1, wherein the mold prototype is formed by a modeling apparatus driven by numerical control. While forming an original mold of a molded product formed by injection molding and a modeling mold imitating a molding surface of an injection molding mold for forming the molded product by a modeling apparatus that is driven by numerical control,
A method for manufacturing a mold, comprising forming the injection mold using a modeling mold on which the mold is mounted as a mold for forming a mold. While forming a molding die that imitates a molding surface of a two-part injection molding die that is joined to the original mold of the molded product formed by injection molding, by a modeling device that is driven by numerical control,
A method for producing a mold, wherein each of the two divided molds for injection molding is formed by using the shaping mold with the mold as a prototype for mold formation.   The prototype of the molded product has a runner part constituting a flow path of a molten resin, and one or more product parts connected to the runner part. Mold manufacturing method. A molding die for forming one of two divided injection molds to be joined to each other,
A joining surface where the injection molds are in contact with each other;
An engaging part for guiding or guiding the joining of the injection molds;
A molding die characterized in that an original shape of a molding formed by injection molding is integrally formed on a joint surface of the injection molding die.   The modeling mold according to claim 6, wherein the original shape has a runner part constituting a flow path of the molten resin and one or more product parts connected to the runner part. The modeling mold according to claim 6 or 7, wherein the modeling mold is formed by a modeling apparatus driven by numerical control.