JPH09314606A - Method for adjusting combination of injection mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and certainly perform the combination adjustment of a mold by simple work without generating burr in an injection molded product and concentrating load to the mutual forcecutting surfaces of mold constituting members. SOLUTION: Polymeric films 10a having an arbitrary thickness are inserted in the gaps between the mating surfaces of a core plate 3c, a split core 4g and a split core 4h and self-adhesives 11a are inserted and the contact state of mutual mating surfaces (e.g; the mating surface on the side a cavity core 2f, the mating surface on the side of the split core 4g) is quantified by the transfer bonding of the polymeric films. When a mold is once closed to be opened, only at the force-cutting places of the mating surfaces, the polymeric films are transferred and bonded to the splic core 2f by the self-adhesive strength of the self-adhesive and the clearance between the mating surfaces can be efficiently and certainly quantified by the thickness of the inserted polymeric film to facilitate the adjustment of the mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling and adjusting an injection mold.

[0002]

2. Description of the Related Art As a method of adjusting the assembly of an injection molding die, a method using Komeitan is known and described in the following documents. Kiyoshi Uchida "Injection Mold 3rd Edition", p133-p134, Plastic Age Co., Ltd. (1984)

FIG. 17 shows the structure of a conventional general injection molding die. This figure is a sectional view of the mold. Reference numeral 1a is a cavity plate, 2a is a cavity insert, 3a is a core plate, 4a is a core insert, 5a is a cavity space (molded product) into which resin is injected, and 6a to 6d are mating surfaces of mold component members. is there. 6d is a mating surface of the cavity plate 1a and the core plate 3a. 6a to 6c are mating surfaces of the cavity insert 2a and the core insert 4a. Particularly, 6a, which is a surface where the cavity insert 2a and the core insert 4a are in contact with each other.
6c is called a push-cut surface. FIG. 18 is a perspective view of a molded product obtained by the mold of FIG.

In the present specification, the "matching surface" and the "push-off surface" mean at least one of the facing surfaces of the mold component members facing each other. For example, when it is simply described as the mating surface 6a, this means that it is the cavity insert 2a.
It means the mating surface on the side and the mating surface on the side of the core insert 4a. Further, for example, in the case of explaining the mating surface 6a particularly on the side of the cavity insert 2a, "cabin insert 2a" will be used.
Side mating surface 6a ”.

The mold shown in FIG. 17 has a clearance C _{1 of} about 0.02 to 0.2 mm (the mating surface 6d on the side of the cavity plate 1a and the core plate 6d) in the mating surface 6d in a closed state without applying a load. (Gap between mating surface 6d on 3a side)
Is adjusted to occur. The value of the clearance C ₁ depends on the mold clamping pressure of the molding machine, the area of the push-cut surfaces 6a to 6c, and the like, but with such a clearance, there is no concern that burrs will come out from the push-cut surface 6a or 6b. Has been done.

As shown in FIG. 19, when there is no clearance C ₁ on the mating surface 6d (C ₁ = 0), the pressing surfaces 6a-6c are opened and closed by the resin pressure during molding, and the pressing surfaces 6b, 6b.
The resin flows from c, and burrs are finally formed on the molded product. Therefore, conventionally, the push-cut surfaces (6a, 6b and 6c) are actually measured and finished so that burrs do not occur on the push-cut surfaces 6b, 6c, leaving a slight adjustment allowance, and the Komeitan is pushed on the cavity insert 2a side. One of the surfaces 6a to 6c and the press-cutting surfaces 6a to 6c on the side of the core insert 4a is coated with Komeitan, and the mating surface 6d on the side of the cavity plate 1a and the mating surface 6d on the side of the core plate 3a. It was painted on and the contact was checked to make adjustments.

FIG. 20 and FIG. 21 show a slide configuration diagram of a general injection molding die. These are sectional views of the mold. 20 shows the mold closed, and FIG. 21 shows the mold opened. 1b is a cavity plate, 3b is a core plate, 4b is a core insert, 5b is a cavity space (molded product) into which resin is injected, 6e,
6f is a mating surface (push-off surface) of the mold constituent members. 7a
Is a slide core, 8a is a locking block, and 9a is an angular pin. 22 is a perspective view of a molded product obtained by the mold of FIG.

The clearances on the push-cut surfaces 6e and 6f between the slide core 7a and the core insert 4b are adjusted and set to 0.02 mm or less. 0.02 on push-cut surfaces 6e and 6f
When a clearance of more than mm is generated, these pressing surfaces open and close due to the resin pressure during molding, the resin flows from these pressing surfaces, and finally burrs are formed on the molded product.
Measure and finish the dimensions D ₁ and D ₂ of the push-cut portion so that burrs do not occur on these push-cut surfaces, leaving a slight adjustment allowance.
Apply Komeitan to one of the push-cut surfaces 6e and 6f on the slide core 7a side and the push-cut surfaces 6e and 6f on the core insert 4b side,
Check the hits and make adjustments.

As another adjusting method, these push-cut surfaces 6
Push-cut surfaces 6e and 6f on the side of the slide core 7a and push-cut surfaces 6e and 6f on the side of the core insert 4b so that burrs do not occur on the e and 6f
Apply Komeitan to one of the two, and while checking the contact, slide core 7a angle θ ₁ , locking block 8a
Angle θ ₂ or the dimension D _{3 of the} locking block 8a
Adjust with.

As described above, generally, as described in the above-mentioned document "Mold for Injection Molding Third Edition", after coating Komeitan on one side of each mating surface of the mold component, A method is employed in which the mold is closed, and then the Mitsumeitan is transferred (moved / adhered) to the mating surface of the mating side to check the contact state and adjust the mold assembly. The particle size of Komeitan is on the order of several μm, and the contact of each mating surface can be adjusted on the order of several μm by adjusting the mold so that Komeitan is transferred to the entire surface.

[0011]

However, according to the method for adjusting the assembly of the injection molding die as described above, the Komeitan is applied to one side of each mating surface of the die constituting member so that Since it is premised that the contact surface is transferred to the contact surface of the other side, if the adhesiveness of Komeitan to the mold components is low, Komeitan will be the opponent even if the mold surfaces are in contact with each other. There was a case where it was not transferred to the side contact surface, and there were variations in the results of the contact state. In addition, there are individual differences in the application thickness of Komeitan and the acceptance / rejection of Komeitan transfer to the mold component on the other side, and it is very difficult to quantitatively manage these. Until now, there is no means to solve the above problems,
The coating thickness of Komeitan was controlled visually by the same operator, and the pass / fail judgment of Komeitan transfer was made by the same operator.

[0012] For the above reasons, in the method for adjusting the assembly of the injection molding die, the adjustment by Komeitan was usually repeated several times to several tens of times. Every time the condition was detected, it was necessary to remove Komeitan, which was very complicated work. Further, it was difficult for anyone to similarly quantify the transfer state of Komeitan to the mating surface of the mold component members, and therefore only a skilled worker could adjust the mold assembly. This is also one of the causes of increasing the die cost.

Here, problems in the prior art, particularly defective patterns on the push-cut surface will be described with reference to the drawings. The following (1) to (3), for example, can be considered as modes of defects in the mating surfaces of the mold constituent members, particularly the press-cut surface. FIG.
24 shows an example thereof, FIGS. 25 and 26 show another example, FIG.
28 shows each of another example. However, FIGS.
5 and 27 show the state in which the mold is open, as shown in FIGS.
Reference numeral 8 indicates a state in which the mold is closed. Further, in these figures, the cross section of the mating surface is simplified.

(1) In the molds of FIGS. 23 and 24, the fixed side is composed of the cavity plate 1c, the split cabinet insert 2b and the split cabinet insert 2c, and the movable side is the core plate 3c and the split core insert. 4c and split core nesting 4
d. When the mold is closed, the mating surface 6g between the split cabinet insert 2b and the split core nest 4c is a push-cut surface, but the mating surface 6h between the split cabinet insert 2c and the split core insert 4d is not pushed completely. It is shown. In FIG. 24, 5c is a cavity space (molded product). If the mold constituent members do not match each other like the mating surface 6h, the resin leaks from that portion, and burrs are generated in the molded product.

(2) The mold shown in FIGS. 25 and 26 comprises a cavity insert 2d and a core insert 4e. This mold is an example in which the mating surfaces 6i of the mold constituent members have undulations, and these members are partially pressed. If the mold constituent members are partially pressed, burrs are generated on the molded product, and the load is concentrated on the pressed surface, which shortens the life of the mold. In FIG. 26, 5d is a cavity space (molded product).

(3) The mold shown in FIGS. 27 and 28 is composed of a cavity insert 2e and a core insert 4f. When the mold is closed, the mating face 6j on the side of the cavity insert 2e is inclined,
An example is shown in which the mating surface 6j on the side of the core insert 4f is partially touched. When the mold constituent members are pressed against each other by pressing against each other like the mating surface 6j, the load concentrates on the contact surface, which shortens the life of the mold. FIG.
In FIG. 8, 5e is a cavity space (molded product).

In order to eliminate the defects shown in FIGS. 24 to 28, conventionally, either one of the above-mentioned mating surfaces, that is, one of the mold constituent members was coated with Komeitan to adjust the mold. Therefore, the above-mentioned problems occur. The present invention has been made in view of the above problems, and an object thereof is to efficiently perform a simple work so as not to cause burrs on an injection-molded product or to concentrate a load on a press-cut surface between mold constituent members. An object of the present invention is to provide a method capable of assembling and adjusting a mold well and surely.

[0018]

In order to achieve the above object, the present invention provides a method of assembling and adjusting a mating surface between respective constituent members of an injection molding die, wherein at least one of the mating surfaces is kept open in the die. After inserting an adhesive-coated polymer film or metal foil of arbitrary thickness, a material that transfers color when pressed, or a material that develops color when pressed,
By closing the mold and physically transferring, transferring or chemically reacting the above materials by the mold's own weight pressure, the contact state of the mating surface is quantified and the mold assembly adjustment is performed. Is performed accurately. According to this method, the assembly adjustment time is shortened and the die cost is reduced.

[0019]

According to a first aspect of the present invention, there is provided a method of assembling and adjusting a mating surface between constituent members of an injection molding die, wherein one of the mating surfaces of the mold constituent members has an arbitrary thickness. The polymer film or metal foil and the adhesive are inserted, and the contact state between the mating surfaces is quantified by transferring the polymer film or metal foil.

Examples of the polymer film include polyethylene, soft polyvinyl chloride, hard polyvinyl chloride,
A film made of polypropylene, polyethylene terephthalate, polyamide, polycarbonate, polyimide, high-density polyethylene having a high elastic modulus, or the like can be used, but the film is not limited to these and has a uniform thickness of several μm to several tens μ.
If it is a polymer film of m, there is no problem. In addition, although a metal mold member is generally made of steel in the past, the metal foil may be made of a material softer than steel, for example, an aluminum foil.

The invention of claim 2 is characterized in that, in the method of claim 1, cellophane tape is used as the polymer film coated with the adhesive when the polymer film and the adhesive are inserted. It is a thing.

According to a third aspect of the present invention, in the method of adjusting assembling of the mating surfaces of the constituent members of the injection molding die, the color is transferred by applying pressure to one of the mating surfaces of the die constituent members. It is characterized in that the material is inserted and the contact state between the mating surfaces is evaluated by the color transfer state from one mating surface to the other mating surface.

According to a fourth aspect of the present invention, in the method of the third aspect, carbon, oil or wax as a material to which color is transferred by applying pressure, paper, etc. having good affinity with oil or wax. The material is used.

According to a fifth aspect of the present invention, in the method for assembling and adjusting the mating surfaces of the constituent members of the injection molding die, a material that develops color by applying pressure to at least one of the mating surfaces of the die constituent members. Is inserted, and the contact state between the mating surfaces is evaluated by the color development state of the material.

The invention according to claim 6 is characterized in that, in the method according to claim 5, a pressure-sensitive dye solution and a saliency agent containing an acidic substance are used as materials that develop color when pressure is applied. is there.

According to the invention of claim 7, in the method of claim 6, as a material that develops a color by applying pressure, a paper containing a pressure-sensitive dye solution and a saliency agent containing an acidic solid substance are independently provided. It is characterized in that a layered film having a film thickness is used.

The invention according to claim 8 is the method according to claim 6, wherein microcapsules containing a pressure-sensitive dye solution are dispersed in a salient agent layer containing an acidic solid substance as a material that develops color when pressure is applied. It is characterized by using a layered material.

According to a ninth aspect of the present invention, in the method of the sixth aspect, microcapsules containing a pressure-sensitive dye solution are coated with an acidic solid substance as a material that develops a color when pressure is applied to obtain an arbitrary particle size. It is characterized in that the used one is used.

According to a tenth aspect of the invention, in the method of the fifth aspect, a material in which microcapsules containing a pressure-sensitive dye solution and an acidic liquid substance are dispersed in oil as a material that develops color when pressure is applied. Is inserted by spray irradiation or the like.

[0030]

Embodiments of the present invention will be described below with reference to the drawings. Example 1 FIGS. 1 to 3 show examples in which the defects of FIGS. 23 and 24 are solved by the methods of claims 1 and 2. FIG. 1 shows the mold opened, FIG. 2 shows the mold closed, and FIG. 3 shows the mold reopened. In addition, in these drawings, the cross section of the mating surface is simplified. 1-3, the fixed side is a cavity plate 1d, a split cabinet insert 2f,
And a split cabinet insert 2g, and the movable side includes a core plate 3c, a split core insert 4g, and a split core insert 4
h. The polymer film 10 having an arbitrary thickness is provided on the mating surfaces of the core plate 3c, the split core insert 4g, and the split core insert 4h, which are mold components.
a and the adhesive 11a are inserted on the upper surface thereof.

After the mold is once closed (FIG. 2) and then opened (FIG. 3), the adhesive 11 is applied only to the part where the mating surface is completely pressed.
The polymer film 10a is transferred to the split cabinet insert 2f side by the adhesive force of a. The thickness of the inserted polymer film 10a enables efficient and reliable quantification of the clearance on the mating surface, which facilitates adjustment of the mold.

Embodiment 2 Like the first embodiment, the defects shown in FIGS.
4 and 5 show examples in which the method is solved. The mold shown in these figures has a fixed side composed of a cavity plate 1e, a locking block 8b, and an angular pin 9b, and a movable side composed of a core plate 3d, a core insert 4i, and slide cores 7b, 7c. There is. Core nesting 4
The distance between the push-cut surfaces 6k of the i and the slide cores 7b and 7c and the distance between the push-cut surfaces 6l are adjusted to 0.02 mm or less so that burrs do not occur in the molded product. The distance between the push-cut surfaces 6l can be adjusted by measuring and adjusting the dimension D ₄ with a three-dimensional measuring machine or the like in a state where the die is assembled, but for the push-cut surface 6k, the mold is assembled. Therefore, the same measurement as above cannot be performed.

Therefore, in the present invention, as shown in FIG. 5, a cellophane tape (a tape made of regenerated cellulose coated with an adhesive) 12a having an arbitrary thickness is provided on the push-cut surface 6k on the slide cores 7b and 7c side. The adhesive surface is inserted toward the core insert 4i, and the push-off amount of the slide cores 7b and 7c is adjusted. The cellophane tape 12a is inexpensive, and the amount of push-cut can be easily quantified by appropriately selecting the tape thickness. In addition, in FIG.
5f is a cavity space (molded product).

As is clear from Examples 1 and 2, the method according to Claims 1 and 2 is such that a plurality of cavity inserts, core inserts, slide cores, and loose cores are adjusted in terms of push-cut surfaces (intervals between push-cut surfaces). Since it can be used for adjustment) and a polymer film or metal foil having an appropriate thickness and elastic modulus is used, there is an effect that it can be reliably quantified.

Embodiment 3 FIGS. 6 and 7 show examples in which the defects of FIGS. 25 and 26 are solved by the methods of claims 3 and 4. The mold shown in these figures is composed of a cavity insert 2h and a core insert 4j. A dispersion liquid in which carbon 13a is dispersed in wax or oil is coated on the mating face on the side of the cavity insert 2h. On the other hand, the paper 14a having an arbitrary thickness (about 0.1 mm or less) is inserted on the mating surface on the core insert 4j side. FIG.
Shows the state where the mold is opened, and FIG. 7 shows the core insert 4j when the mold is once closed and then reopened. FIG.
When the mold is closed, the carbon 13a in the dispersion liquid is transferred to the paper 14a at the portion where the cavity insert 2h and the core insert 4j are pressed against each other. That is, since the waviness of the mating surface can be quantified with certainty,
Adjustment of the mold becomes easy.

This embodiment uses carbon dispersed in wax or oil as represented by carbon in carbon paper. That is, the material can be obtained at low cost, and the push-cut surface can be quantified with certainty by arbitrarily setting the thickness of the paper 14a. Furthermore, when carbon dispersed in oil is used, the dispersion can be applied by spray irradiation or the like, so that it is possible to deal with a press-cut surface having a complicated shape.

Embodiment 4 FIGS. 8 and 9 show examples in which the defects of FIGS. 25 and 26 are solved by the methods of claims 5 to 7. The mold shown in these figures is composed of a cavity insert 2i and a core insert 4k. An acidic solid substance 15a is coated on the mating face on the side of the cavity insert 2i. On the other hand, on the mating surface on the core nest 4k side, an arbitrary thickness (about 0.1 m) containing the pressure sensitive dye solution is provided.
m or less) paper 14b is inserted. As a pressure-sensitive dye solution, crystal violet lactone (CV
L), benzoyl leuco methylene blue (BLMB) and the like can be used. Methyl orange instead of pressure sensitive dye solution,
An indicator such as thymol blue can also be adopted.

FIG. 8 shows a state in which the mold is opened, and FIG. 9 shows the core insert 4k when the mold is once closed and then opened. When the mold is closed, the cavity insert 2i and core insert 4k
In the areas where the pressure-sensitive dyes are pressed against each other, the pressure-sensitive dye solution that has penetrated into the paper 14b and the acidic solid substance 15a react with each other to develop the color of the pressure-sensitive dye solution. In FIG. 9, 1
4c indicates a colored portion. That is, since the waviness of the mating surface can be quantified with certainty, the adjustment of the mold becomes easy.

As described above, in the embodiments shown in FIGS. 1 to 9, since the layered substance (polymer film, metal foil, paper, etc.) is used, it is easy to insert into a mold component having a flat surface. They have common advantages.

Embodiment 5 FIGS. 10 and 11 show an example in which the defects of FIGS. 27 and 28 are solved by the methods of claims 5, 6 and 8. The mold shown in these figures is composed of a cavity insert 2j and a core insert 4l. A material obtained by dispersing microcapsules 16a containing a pressure-sensitive dye solution in an acidic solid substance 15b is coated on the mating surface on the core insert 4l side. FIG.
Shows the state in which the mold is opened, and FIG. 11 shows the core insert 4l when the mold is once closed and then opened.

When the mold is closed, the microcapsules 16a containing the pressure-sensitive dye solution are destroyed by the weight of the mold at the portions where the cavity insert 2j and the core insert 4l are pressed against each other, so that the acidic solid substance 15b Color develops by reaction.
In FIG. 11, 16c indicates a colored portion. The microcapsule 16a has a membrane as a wall material, and a microparticle having a wall-like substance (here, a pressure-sensitive dye solution) encapsulated therein has a diameter of several μm
Since it has a capsule structure of about several hundreds of μm, its particle size can be arbitrarily selected, and it utilizes the chemical reaction between the pressure-sensitive dye solution and the acidic solid substance 15b.
The one-side contact portion of the mating surface could be quantified with certainty, and the adjustment of the mold was facilitated.

Embodiment 6 FIGS. 12 and 13 show an example in which the defects of FIGS. 27 and 28 are solved by the methods of claims 5, 6 and 9. The mold shown in these figures is composed of a cavity insert 2k and a core insert 4m. On the mating surface on the core nest 4m side, a material in which a microcapsule 16b containing a pressure-sensitive dye solution is coated with an acidic solid substance 15c to have an arbitrary particle size is inserted. FIG. 12 shows a state in which the mold is opened, and FIG. 13 shows the core insert 4m when the mold is once closed and then opened.

When the mold is closed, the microcapsules 16b containing the pressure-sensitive dye solution are broken by the mold's own weight at the portions where the cavity insert 2k and the core insert 4m are pressed against each other, so that the acidic solid substance 15c Color develops by reaction.
That is, since it is possible to reliably quantify the one-side contact portion of the mating surface, it becomes easy to adjust the mold.

In this embodiment, not only the fine particles can be made to have an arbitrary size, but also the individual particles can be arranged in a matrix form, and more accurate quantification is possible. In order to realize this arrangement, for example, as shown in FIG. 14, it is effective to use a mesh mask 18a in which holes 17a corresponding to the particle diameter are formed in a matrix at arbitrary intervals. However, the method is not limited to this, and any method may be used as long as the particles can be put into the mating surfaces of the mold constituent members one by one.

Embodiment 7 FIGS. 15 and 16 show an example in which the defects of FIGS. 25 and 26 are solved by the methods of claims 5, 6 and 10. The mold shown in these figures is composed of a cavity insert 21 and a core insert 4n. The mating surface on the side of the cavity insert 21 is coated with a substance 19a in which microcapsules containing a pressure-sensitive dye solution and a liquid acidic substance are dispersed in oil. FIG.
5 shows a state where the mold is opened, and FIG. 16 shows the core insert 4n when the mold is once closed and then opened.

When the mold is closed, the microcapsules containing the pressure-sensitive dye solution are broken by the weight of the mold at the portion where the cavity insert 2l and the core insert 4n are pressed against each other, and by reaction with the acidic liquid substance. To color. In FIG. 16, 19b indicates a colored portion. That is, since it is possible to reliably quantify the one-side contact portion of the mating surface, it becomes easy to adjust the mold.

Since the substance 19a used in this example, in which the microcapsules containing the pressure-sensitive dye solution and the acidic liquid substance are dispersed in oil, is a liquid, it can be applied by spray irradiation or the like. Therefore, it is possible to deal with a complicatedly shaped push-cut surface, and it is possible to easily apply.

[0048]

As is clear from the above description, according to the present invention, the following remarkable operational effects can be obtained. (1) Operation and effect according to claim 1 In the adjustment of the assembling of the mating surfaces of the constituent members of the injection molding die, the polymer film to be inserted on the mating surfaces has a layered structure, so that it is optional for the die constituent members. It is easy to insert into a place and can be easily inserted even when the mold is composed of a plurality of constituent members. Further, since the polymer film can be selected to have an arbitrary thickness (several μm to several tens μm), the clearance of the mating surface can be accurately quantified. Furthermore, unlike Komeitan, since it is positively transferred to the mating surface by an adhesive, it can be quantified with certainty. Further, when high-precision measurement is required in which the elastic deformation of the polymer film is not permitted, for example, a high-density polyethylene film having a high elastic modulus or an aluminum foil can be used.

(2) Action and effect according to claim 2 In adjusting the assembling of the mating surfaces of the components of the injection molding die, the cellophane tape (regenerated cellulose film coated with an adhesive) is inserted into the mating surface. Inexpensive and easy to obtain. In addition, since a thickness of arbitrary thickness (several μm to several tens of μm) can be selected, the clearance of the mating surface can be accurately and surely quantified. From the above, the method of claims 1 and 2 can be used to adjust the push-cut surfaces of a plurality of cavity inserts, core inserts, slide cores and loose cores, and a polymer film having an arbitrary thickness and an arbitrary elastic modulus. The use of metal foil and metal foil enables reliable quantification.

(3) Action and effect according to claims 3 and 4 In the assembling adjustment of the mating surface of the constituent members of the injection molding die, a material which has been dispersed in oil or wax on one side of the mating surface and which has already been colored ( Here, carbon is used) and the other surface has a good affinity with oil or wax, for example, paper of arbitrary thickness (several μm to several tens of μm) is used. It can be quantified reliably and accurately. In addition, since the material dispersed in oil and already colored (here, carbon is used) is in a liquid state, it is possible to coat the mating surface of the mold constituent material having a complicated shape by spray irradiation or the like. Furthermore, since the paper to be inserted on the mating surface is layered,
It is easy to insert into any part of the mold component.

(4) Functions and Effects According to Claims 5 to 7 In adjusting the assembling of the mating surfaces of the constituent members of the injection molding die, the mating surfaces are coated with an acidic solid substance, and the other surface is coated with an impression. Since a paper of arbitrary thickness (several μm to several tens of μm) containing a pressure dye solution is used (therefore, unlike Komeitan, it is colored by a chemical reaction between the pressure sensitive dye solution and an acidic solid substance), Sure clearance,
And it can be quantified accurately. As described above, in the method according to claims 1 to 7, since a layered substance (polymer film, metal foil or paper) is used, it is easy to insert into a mold component having a flat surface at an arbitrary position, and the layered A common effect is that quantification is easy because the thickness of the substance can be arbitrarily selected.

(5) Actions and effects according to claims 5, 6 and 8 In assembling and adjusting the mating surfaces of the components of the injection molding die, microcapsules containing a pressure-sensitive dye solution on one side of the mating surfaces. By inserting the material in which the saliency agent is dispersed in the saliency agent layer (acidic solid substance) in a layered manner, the shape of the mating surface is quantified by coloring, so that the waviness and inclination of the mating surface can be quantified without fail. it can.

(6) Functions and Effects According to Claims 5, 6 and 9 In assembling and adjusting a mating surface between constituent members of an injection molding die, a microcapsule containing a pressure-sensitive dye solution on one side of the mating surface. It is possible to quantify the shape of the mating surface with higher accuracy, because it is possible to arrange materials, each of which has a desired particle size by coating a salient agent layer (acidic solid substance), in a matrix form. You can In addition, the waviness and inclination of the mating surfaces can be quantified with certainty.

(7) Actions and effects according to claims 5, 6 and 10 In assembling and adjusting a mating surface between constituent members of an injection molding die, a microcapsule containing a pressure-sensitive dye solution on one side of the mating surface. Since a material obtained by dispersing the acid solid substance and the acidic solid substance in oil is inserted by spray irradiation or the like, it is possible to coat the mating surface of the mold component member having a complicated shape. Further, since the shape of the mating surface is quantified by coloring, the waviness and the inclination of the mating surface can be surely quantified. As described above, according to the method of claims 5, 6, 8 to 10, since the mating surface of the mold component can be evaluated by using the flexible material, the mold component is undulating or tilted, Even if it has a complicated shape, there is a common effect that it can be quantified reliably and easily.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an injection molding die according to Embodiment 1 of the present invention, showing a state when the die is open.

FIG. 2 is a cross-sectional view showing a state in which the mold of FIG. 1 is closed.

FIG. 3 is a cross-sectional view showing a state when the mold of FIG. 1 is once closed and then opened.

FIG. 4 is a cross-sectional view of an injection molding die according to a second embodiment, showing a state when the die is closed.

5 is a perspective view showing the slide core of FIG. 4. FIG.

FIG. 6 is a cross-sectional view of an injection molding die according to a third embodiment, showing a state when the die is open.

FIG. 7 is a perspective view showing the core insert when the mold of FIG. 6 is once closed and then opened.

FIG. 8 is a cross-sectional view of an injection molding die according to Example 4, showing a state when the die is open.

9 is a perspective view showing the core insert when the mold of FIG. 8 is once closed and then opened.

FIG. 10 is a cross-sectional view of an injection-molding die according to a fifth embodiment, showing a state when the die is open.

11 is a perspective view showing the core insert when the mold of FIG. 10 is once closed and then opened.

FIG. 12 is a cross-sectional view of an injection-molding die according to Example 6, showing a state when the die is open.

13 is a perspective view showing the core insert when the mold of FIG. 12 is once closed and then opened.

FIG. 14 is a perspective view illustrating a method of arranging microcapsules on a mating surface of the core insert of FIG. 12;

FIG. 15 is a sectional view of an injection-molding die according to a seventh embodiment, showing a state when the die is opened.

16 is a perspective view showing the core insert when the mold of FIG. 15 is once closed and then opened.

FIG. 17 is a cross-sectional view showing a configuration example of a conventional general injection molding die.

18 is a perspective view of a molded product obtained by the mold of FIG.

FIG. 19 is a cross-sectional view showing another configuration example of a conventional general injection molding die.

FIG. 20 is a cross-sectional view of a slide configuration example of a conventional general injection molding die, showing a state when the die is closed.

21 is a cross-sectional view showing a state in which the mold of FIG. 20 is open.

22 is a perspective view of a molded product obtained by the mold of FIG.

FIG. 23 is a cross-sectional view showing a defective example of a mating surface between mold component members, which is when the mold is open.

FIG. 24 is a cross-sectional view showing a state when the mold of FIG. 23 is closed.

FIG. 25 is a cross-sectional view showing another defective example of the mating surfaces of the mold component members when the mold is open.

26 is a cross-sectional view showing a state in which the mold of FIG. 25 is closed.

FIG. 27 is a cross-sectional view showing still another defective example of the mating surfaces of the mold component members, which is when the mold is open.

28 is a cross-sectional view showing a state where the mold of FIG. 27 is closed.

[Explanation of symbols]

1a-1e Cavity plate 2a-2l Cavity insert 3a-3d Core plate 4a-4n Core insert 5a-5f Cavity space (molded product) 6a-6l Mating surface 6a-6c, 6e-6g, 6k, 6l Push-off Surface 7a to 7c Slide core 8a, 8b Locking block 9a, 9b Angular pin 10a Polymer film 11a Adhesive 12a Cellophane tape 13a Carbon 14a, 14b Paper 14c, 16c, 19b Colored part 15a-15c Acidic solid substance 16a, 16b Feeling Microcapsules containing pressure dye solution 17a Pores 18a Mesh mask 19a Substances in which microcapsules containing pressure sensitive dye solution and liquid acidic substance are dispersed in oil C ₁ clearances D ₁ and D ₂ Dimension of push-off part D ₃ Locking block Dimension D ₄ dimension θ ₁ Slide core Angle θ ₂ Locking block angle

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Akira Fukushima 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd.

Claims (10)

[Claims] 1. A method for assembling and adjusting a mating surface between constituent members of an injection molding die, wherein a polymer film or metal foil having an arbitrary thickness and an adhesive are inserted into one of the mating surfaces of the die constituent members. Then, the method for assembling and adjusting an injection mold is characterized in that the contact state between the mating surfaces is quantified by transferring a polymer film or a metal foil. 2. The injection molding die according to claim 1, wherein a cellophane tape is used as the polymer film coated with the adhesive when the polymer film and the adhesive are inserted. Assembly adjustment method. 3. A method of assembling and adjusting a mating surface between constituent members of an injection molding die, wherein a material to which a color is transferred by applying pressure is inserted into one of the mating surfaces of the die constituent members, A method for assembling and adjusting an injection molding die, comprising evaluating a contact state between mating surfaces based on a color transfer state from the mating surface to the other mating surface. 4. The method according to claim 3, wherein carbon is used as a material for transferring color when pressure is applied,
A method for assembling and adjusting an injection mold, comprising using oil or wax and a material such as paper having a good affinity for oil or wax. 5. In a method for assembling and adjusting a mating surface between constituent members of an injection molding die, a material that develops color when pressure is applied is inserted into at least one of the mating surfaces of the die constituent members, A method for assembling and adjusting an injection molding die, which comprises evaluating a contact state between mating surfaces based on a coloring state. 6. The method according to claim 5, wherein a pressure-sensitive dye solution is used as a material that develops color when pressure is applied,
A method of assembling and adjusting an injection molding die, which comprises using a saliency agent containing an acidic substance. 7. The method according to claim 6, wherein, as a material that develops color when pressure is applied, paper containing a pressure-sensitive dye solution and a saliency agent containing an acidic solid substance are formed into layers with independent thicknesses. A method for assembling and adjusting an injection molding die, characterized in that 8. The method according to claim 6, wherein a layered material in which microcapsules containing a pressure-sensitive dye solution are dispersed in a salient agent layer containing an acidic solid substance is used as a material that develops color when pressure is applied. A method for assembling and adjusting an injection molding die, comprising: 9. The method according to claim 6, wherein the material that develops color when pressure is applied is microcapsules containing a pressure-sensitive dye solution and coated with an acidic solid substance to have an arbitrary particle size. A method for assembling and adjusting an injection molding die, which is characterized by: 10. The method according to claim 5, wherein a material in which microcapsules containing a pressure-sensitive dye solution and an acidic liquid substance are dispersed in oil is spray-irradiated as the material that develops color when pressure is applied. A method for assembling and adjusting an injection molding die, which is characterized by inserting.