TW201429670A - Insert and insert manufacturing method - Google Patents

Abstract

Provided is a technology with which an insulating layer can be easily configured in an insulating die regardless of the form of the cavity surface and the complexity of maintenance of the insulating die is reduced. An insert, which is to be disposed in a die and is provided with a main insert body and an insulating layer that is provided on at least a portion of the main insert body and configures a portion of the cavity surface, is used. The insulating layer is preferably embedded in a depression provided on the main insert body. The insert is obtained using a manufacturing method comprising: an insulating layer-forming process for forming an insulating layer on a block obtained from an insert material for configuring the insert and obtaining a complex comprising the block and the insulating layer; and a removal process for removing a portion of the block or a portion of the block and a portion of the insulating layer from the complex.

Description

Nested and nested manufacturing methods

The present invention relates to a nest formed with a heat insulating layer, and a manufacturing method of the nest.

The thermoplastic resin is lighter than other materials such as metal, and can be formed into a desired shape by an injection molding method or the like. Therefore, it is used in electrical parts and electronic parts such as automobiles, business machines, foods or beverages. Containers and other fields.

In the injection molding method, when a thermoplastic resin in a molten state is filled into a mold to obtain a resin molded body having a desired shape, a pattern or shape imparted to the resin molded body is formed on the cavity surface of the mold.

A method known for improving the transferability of the shape or pattern of the surface of the cavity to the resin molded body, improving the thermoplastic resin, blending a specific additive to the thermoplastic resin, or increasing the mold temperature is known.

In particular, the method of increasing the temperature of the mold is effective in that it does not require an improved material. However, when the mold temperature is raised, the time required for the cooling and solidification of the plasticizable thermoplastic resin becomes long, and the forming efficiency generally decreases.

Here, the mold for covering the inner wall surface of the mold with the heat insulating layer having a small heat conductivity, that is, the heat insulating mold is disclosed in Patent Document 1 or the like.

The heat insulating mold described in the above Patent Document 1 is the above In addition to improving transferability, it is very suitable when it is necessary to increase the mold temperature (for example, to improve moldability).

[First technical literature] [Patent Literature]

[Patent Document 1] Japanese Laid-Open Patent Publication No. Hei 09-155876.

The heat insulating layer in the heat insulating mold sometimes has problems such as breakage or peeling during use. In this case, even if a part of the damage or peeling occurs, it is necessary to take out all of the movable mold and/or the fixed mold in the heat insulating mold and perform repair, so that the maintenance becomes complicated. Further, in the heat insulating mold, the heat insulating layer is formed so that the cavity faces constituting various shapes are sometimes formed so as to constitute a complicated cavity face or a cavity face which is required to have high dimensional accuracy. Generally, in the heat insulating mold, the heat insulating layer is formed by a material which forms a heat insulating layer by melting, or a method of coating and heating the precursor of the above material, but it is sometimes difficult to form a heat insulating layer due to the shape of the cavity surface. .

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a technique for easily forming a heat insulating layer in a heat insulating mold regardless of a cavity surface, and which can reduce maintenance of the heat insulating mold.

The inventors of the present invention have made great efforts to solve the above problems. As a result, it has been found that the above problems can be solved by having nesting of a heat insulating layer which is provided at least partially on the nested body and which forms part of the cavity surface, and the present invention has been completed. In particular, the present invention provides the following.

(1) A nesting, disposed in a mold, characterized in that it has a nested body, and a heat insulating layer disposed at least in part of the nested body to form a part of the cavity face.

(2) The heat insulating layer is embedded in the recess provided in the nested body, and is nested in (1).

(3) The entire circumference of the surface of the heat insulating layer is formed on the same surface as the surface, and the surface of the nested body is described in (2).

(4) The width of the surface of the nested body existing on the entire circumference of the surface of the heat insulating layer is greater than 0.1 mm and is nested in (3).

(5) The recessed portion has a slit formed from the opening edge of the recessed portion and formed at a center of the bottom portion of the recessed portion, and is nested as described in any one of (2) to (4).

(6) the recessed portion has a vertical surface extending perpendicularly from the opening edge toward the bottom side of the recessed portion with respect to a surface formed by the opening edge of the recessed portion, and a sloped surface when the opening edge is regarded as the aforementioned vertical In the upper end of the surface, the nesting is performed in any one of (2) to (4), which is formed from the lower end of the vertical surface toward the center of the bottom of the concave portion.

(7) The method for manufacturing a nest according to (1), comprising: a heat insulating layer forming step of forming a heat insulating layer on a block formed of the nested nesting materials to obtain the foregoing a composite of the block and the heat insulating layer; and a removing step of removing a part of the block from the composite, or a part of the block and a part of the heat insulating layer.

(8) The aforementioned nesting system is described in any one of (2) to (6). In the nesting, the heat insulating layer forming step is formed by the nesting material constituting the nest, and a heat insulating layer is formed on the block having the concave portion on the surface, and at least the concave portion is filled with the heat insulating layer to obtain the block. The process of the composite of the body and the heat insulating layer described in (7).

According to the present invention, in the heat insulating mold, regardless of the cavity surface, the heat insulating layer can be easily formed, and the maintenance complexity of the heat insulating mold can be reduced.

1, 1A, 1B‧‧‧ nested

2, 2A, 2B‧‧‧ nested ontology

3‧‧‧Insulation layer

4‧‧‧ cavity

5‧‧‧Formed body

6, 6B‧‧‧ block

7, 7B‧‧‧ complex

10, 10B‧‧‧ mold

20, 20B‧‧‧ movable mold

21‧‧‧ movable mold body

22, 23‧‧‧ nesting

30, 30B‧‧‧fixed mold

31B‧‧‧Fixed mold body

Fig. 1 is a schematic view showing the plane of the nest 1 in the first embodiment; (a) is a perspective view; (b) is a cross-sectional view showing the MM cross section of (a); and (c) is a NN cross section showing (a) Sectional view.

Fig. 2 is a cross-sectional view showing a state of use of the nest 1 in the first embodiment.

Fig. 3 is a perspective view showing a molded body 5 as an example of a molded body formed by the mold 10 in which the nest 1 of the first embodiment is placed.

Fig. 4 is a cross-sectional view schematically showing an example of a manufacturing method of the nest 1 of the first embodiment.

Fig. 5 is a schematic view showing the plane of the nest 1A of the second embodiment; (a) is a perspective view; (b) is a sectional view showing the OO cross section of (a); and (c) is a PP profile showing (a). Sectional view.

Fig. 6 is an enlarged view showing the dimensions of the periphery of the heat insulating layer 3 in the nest 1A of the second embodiment shown in Fig. 5(c).

Figure 7 is a schematic view showing the plane of the nest 1B of the third embodiment; (a) is a perspective view; (b) is a cross-sectional view of the QQ profile of (a); (c) is a (a) A section of the RR section.

Fig. 8 is a cross-sectional view showing a state of use of the nest 1B of the third embodiment.

Fig. 9 is a cross-sectional view schematically showing an example of a manufacturing method of the nest 1B of the third embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Moreover, the present invention is not limited to the following embodiments.

"First Embodiment"

<nesting>

Fig. 1 is a schematic view showing the plane of the nest 1 in the first embodiment; (a) is a perspective view; (b) is a cross-sectional view showing the MM cross section of (a); and (c) is a NN cross section showing (a) Sectional view.

As shown in Fig. 1, the nest 1 of the present embodiment has a nested body 2 and a heat insulating layer 3. As described below, the heat insulating layer 3 is formed in a mold in which the nest 1 is disposed, and constitutes a part of the cavity surface. The nest 1 is on the side of the nested body 2 and has a hole through which the protruding pin is inserted. Further, the term "cavity" refers to the entire space in the interior of the mold filled with resin.

When the resin molded body is molded, the molten resin is filled in the cavity of the mold. The heat of the molten resin which is in contact with the surface of the heat insulating layer 3 is hardly discharged out of the mold by the heat insulating effect. As a result, the fluidity of the molten resin is easily maintained in the portion in contact with the surface of the heat insulating layer 3, and the adhesion of the welded joint is improved.

As shown in FIGS. 1(b) and 1(c), the heat insulating layer 3 is embedded in a recess provided in the nest body 2. With this, and simply in the nested ontology In comparison with the surface layer of the heat insulating layer, the heat insulating layer 3 has a reduced exposure to the outside of the nest 1 , and in particular, the corner portion composed of the heat insulating layer 3 does not exist, so when the nest 1 is attached to the mold, or When the mold 1 is removed from the nest 1, the heat insulating layer 3 is less likely to come into contact with other members, and it is easy to suppress the occurrence of defects such as the heat insulating layer 3 defect. Moreover, compared with the case where the heat insulating layer is simply laminated on the surface of the nested body, the contact area between the nested body 2 and the heat insulating layer 3 is increased, and the heat insulating layer 3 is improved in adhesion to the nested body 2, so even After repeated molding and stripping, the problem of peeling or the like is less likely to occur.

As shown in the first (b) and the first (c), on the entire circumference of the surface α of the heat insulating layer 3, the surface β of the nested body 2 exists on the same surface as the surface α. Thereby, since the heat insulating layer 3 is protected by the surface β of the nested body 2, it is easier to suppress the occurrence of problems such as the defect of the heat insulating layer 3.

The width d of the surface β of the nested body 2 present on the same surface as the surface α of the heat insulating layer 3 is preferably more than 0.1 mm. When the width d exceeds 0.1 mm, the protective effect of the heat insulating layer 3 by the surface β of the nested body 2 is more easily improved. Further, when the width d is too large, the area in which the heat insulating layer 3 exists in the cavity surface formed by the surface α and the surface β becomes small, so that it is difficult to improve the heat insulating effect, and it is difficult to homogenize, so Preferably, the width d is less than 0.5 mm.

As shown in FIGS. 1(b) and 1(c), the recessed portion provided in the nested body 2 has a concave outer shape formed by the inclined surface γ and the bottom surface δ. Here, the concave shape is only required to be a recess, and the internal shape of the recess is not particularly limited. Therefore, in addition to the concave shape shown in the trapezoidal concave shape, a bowl-shaped concave shape or a V-shaped concave shape is also included. Moreover, the surface α of the heat insulating layer 3 constitutes a part of the cavity surface, and when the heat insulating layer 3 is formed, it is preferable to make the heat insulating layer 3 The shape of the surface α is a part that gives the shape of the desired shaped body.

In the recessed portion provided in the nested body 2, the inclined surface γ is formed from the opening edge of the recessed portion to the inclined surface formed at the center of the bottom surface δ of the bottom portion of the recessed portion. Further, the edge of the opening coincides with the boundary between the surface α and the surface β. Further, the bottom surface δ is parallel to the plane formed by the opening edge.

The outer angle θ formed by the slope γ and the bottom surface δ is preferably less than 45 degrees. When the outer angle θ is less than 45 degrees, it is relatively easy to form the heat insulating layer 3 by the melt method.

The thickness of the heat insulating layer 3 is not particularly limited, and may be appropriately determined in consideration of the heat insulating effect of the material constituting the heat insulating layer 3. Further, the thickness of the heat insulating layer 3 may not be constant.

The thermal conductivity required for the heat insulating layer 3 differs depending on the use, etc., but it is more preferably less than 2 W/m‧K.

The material constituting the heat insulating layer 3 is not particularly limited, and may have a heat conductivity which is low, and may have a heat resistance which does not cause defects even if it is in contact with a resin composition having a high temperature.

The material which satisfies the heat resistance and the thermal conductivity of the heat insulating layer 3 is exemplified by a resin having high heat resistance such as a polyimide resin and a low thermal conductivity, and a porous ceramic such as porous zirconia. Hereinafter, these materials will be described.

Specific examples of the polyimide resin include pyromellitic acid (PMDA)-based polyimide, biphenyltetracarboxylic acid-based polyimide, polyamide-imide using trimellitic acid, and double horse. An imide resin (bismaleimide/triazine system, etc.), a benzophenone tetracarboxylic acid type polyimide resin, an acetylene terminal polyimide, a thermoplastic polyimide, or the like. Further, a heat insulating layer composed of a polyimide resin is more preferable. A preferred material other than the polyimide resin may, for example, be a tetrafluoroethylene resin. Further, the heat insulating layer may contain a resin other than a polyimide resin or a tetrafluoroethylene resin, an additive, or the like, within a range that does not impair the effects of the present invention.

The zirconia contained in the porous zirconia is not particularly limited, and it may be stabilized zirconia, partially stabilized zirconia or unstabilized zirconia. The stabilized zirconia, which is a cubic zirconia, is stabilized even at room temperature, and is excellent in mechanical properties such as strength and toughness or wear resistance. Further, the locally stabilized zirconia refers to a state in which the tetragonal zirconia is partially left at room temperature, and when subjected to external stress, a granule from a tetragonal crystal to a monoclinic crystal is generated, in particular, the tensile stress is suppressed. The role of the crack growth, the higher the damage toughness. Further, the unstabilized zirconia refers to zirconia which is not stabilized by a stabilizing agent. Further, at least two or more kinds of zirconia, partially stabilized zirconia or unstabilized zirconia may be used in combination.

The stabilizer which is contained in the stabilized zirconia and the locally stabilized zirconia can be a well-known general object. For example, cerium oxide, cerium oxide, magnesium oxide, or the like can be exemplified. The amount of the stabilizer to be used is not particularly limited, and the amount thereof can be appropriately determined depending on the use, materials used, and the like.

Further, although a porous ceramic other than porous zirconia may be used, the durability of the porous zirconia is better than that of other porous ceramics. Therefore, when a mold having the heat insulating layer 3 composed of porous zirconia is used, deformation of the heat insulating layer 3 is less likely to occur, so that the number of continuously formed molded bodies is large, and the molded body can be improved. Productive.

The raw material for forming the heat insulating layer 3 may further contain a conventionally known additive or the like in addition to the zirconia or the stabilizer in the range which does not impair the effects of the present invention.

Fig. 2 is a cross-sectional view showing a state of use of the nest 1 in the first embodiment. The nested 1 series is placed in the mold 10 to be used. The mold 10 has a movable mold 20 and a fixed mold 30. The movable mold 20 has a movable mold body 21 and a nest 1 , a nest 22 and a nest 23 mounted on the movable mold body 21 . The mold 10 is assembled from the movable mold 20 and the fixed mold 30, whereby the cavity 4 is formed. The cavity face of the cavity 4 is composed of a nest 1, a nest 22, a nest 23 and a fixed mold 30. Moreover, the nest 1 has a hole (not shown) that is adapted to penetrate the protruding pin.

The molten resin is filled into the cavity 4 formed in the mold 10, and is solidified to form a molded body. Fig. 3 is a perspective view showing a molded body 5 as an example of a molded body formed by the mold 10 in which the nest 1 of the first embodiment is placed.

The molded body 5 has a box shape without an upper surface, and is composed of a side surface and a bottom surface. The size of the formed body 5 is not particularly limited, but the nest 1 is very suitable for use in the molded body 5 having a small forming size. The molded body 5 having such a small size is, for example, the volume of the entire space occupied by the molded body (width of the molded body 5 × depth × height. volume including the cavity portion), and can be exemplified from 0.1 mm ³ to 100 mm. ^A molded body of ³ grades (for example, 0.1 mm ³ to 1000 mm ³ ). In the molded body, the thickness of the side surface and the bottom surface may, for example, be a thickness of the order of 0.01 mm to 1 mm (for example, a thickness of 0.01 mm to 10 mm).

Further, the molded body obtained by using the nest 1 is not limited to the molded body 5, and the molded body of various shapes can be formed by appropriately changing the shape of the nest 1. By using the nest 1 as a molded body having a small size such as a substrate-to-substrate connector (B to B connector), it can be easily formed.

<Method of manufacturing nested>

Fig. 4 is a cross-sectional view schematically showing an example of a manufacturing method of the nest 1 of the first embodiment. The above manufacturing method includes a heat insulating layer forming step and a removing step.

The heat insulating layer forming step is a step of forming the fourth (b1) and fourth (b2) states in the states of the fourth (a1) and the fourth (a2). The heat insulating layer forming step is constituted by the nesting material constituting the nest 1, and the heat insulating layer 3 is formed on the block 6 having the concave portion on the surface, and at least the concave portion is filled with the heat insulating layer 3 to obtain the containing body 6. The process of the composite 7 with the heat insulating layer 3. The concave portion provided on the surface of the block body 6 may have, for example, the same shape as the concave portion provided on the nested body 2. Further, the nesting material may, for example, be a mold steel or the like which is commonly used in the manufacture of nesting, and the block 6 may be produced by a previously known casting method or the like.

The method of forming the heat insulating layer 3 is not particularly limited, and a preferred method can be suitably employed depending on the type of the material constituting the heat insulating layer 3. Hereinafter, a specific example will be exemplified to explain a method of forming the heat insulating layer 3.

The material constituting the heat insulating layer 3 may be a polymer such as a polyimide precursor which can form a polymer heat insulating layer when a resin having a high heat resistance and a low thermal conductivity such as a polyimide resin is used. The solution of the precursor is applied to the wall surface of the concave portion provided on the surface of the block 6, heated to evaporate the solvent, and further heated to polymerize, thereby forming a heat insulating layer 3 such as a polyimide film. A method of evaporating a monomer of a heat-resistant polymer, for example, a method of anhydrous pyromellitic acid and 4,4-diaminodiphenyl ether, or a mold having a planar shape, using a suitable bonding method or a tape-like high a molecular heat insulating film is attached to the wall of the concave portion provided on the surface of the block 6 with a polymer heat insulating film to form the heat insulating layer 3 The method. Further, a polyimide film may be formed, and a chromium (Cr) film or a titanium nitride (TiN) film which is a metal hard film may be formed on the surface.

Further, when the material constituting the heat insulating layer 3 is a porous ceramic such as porous zirconia, it is preferable to use a spraying method. By the spraying method, the thermal conductivity of porous zirconia or the like can be easily adjusted to a desired range. Further, there is a problem in that excessive bubbles are formed inside the porous zirconia or the like, and the mechanical strength of the heat insulating layer 3 is largely lowered. In this way, the heat insulating layer 3 is formed by spraying, whereby the structure of the heat insulating layer 3 is suitable for the use of the present invention.

The formation of the heat insulating layer 3 by the spraying can be performed, for example, as follows. First, the molten raw material becomes a liquid. This liquid is accelerated to collide with the wall surface of the concave portion provided on the surface of the block 6. Finally, the material to be adhered is cured. Thereby, a very thin heat insulating layer 3 is formed. Above this very thin heat insulating layer 3, the solidified molten material is more collided, whereby the thickness of the heat insulating layer 3 can be adjusted. Further, the method of curing the raw material may be carried out by using a previously known cooling means or by simply placing it for curing. Moreover, the spraying method is not particularly limited, and the best method can be selected from previously known methods such as arc spraying, plasma spraying, and flame spraying.

When the heat insulating layer 3 is formed by melting, when the porous ceramic such as porous zirconia is directly melted to the block 6 composed of the mold steel, the difference in linear expansion coefficient between the bulk 6 and the porous ceramic It is large, so when the obtained nest 1 is used, sometimes the heat insulating layer 3 is peeled off from the nest 1. In order to prevent this, the base plating layer may be formed by the material of the intermediate degree of the bulk body 6 and the porous ceramic (Ni-Al) before the spraying, so that the bulk body 6 is adhered to the porous ceramic. Sexual improvement. Here, in order to improve the adhesion between the block 6 and the porous ceramic, the concave portion provided on the surface of the block 6 may be subjected to sandblasting. Specifically, the treatment can be carried out by, for example, the method described in JP-A-2003-193216.

Further, when the heat insulating layer 3 is formed by the melt method, it is easily formed. Therefore, in the block 6 shown in Fig. 4, the inclined surface and the bottom surface having the concave portion provided on the surface of the block 6 are sandwiched. The outer corner is preferably less than 45 degrees.

In the removal step, the state of the fourth (b1) diagram and the fourth (b2) diagram is set to the state of the fourth (c1) diagram and the fourth (c2) diagram. As shown in FIG. 4, in the removing step, a part of the block 6 is removed in the width direction and the depth direction of the block 6, and the heat insulating layer 3 is removed in the thickness direction, the width direction, and the depth direction of the heat insulating layer 3. Part of it. In this step, the removal of the block 6 and the heat insulating layer 3 is performed until the position indicated by the broken line in the fourth (b1) and fourth (b2) views is reached. The shape shown by this broken line corresponds to the outer shape of the nest 1 shown in the fourth (c1) and fourth (c2) figures. In particular, the removal in the thickness direction of the heat insulating layer 3 is performed until reaching the upper surface of the block 6.

The method of removing the block 6 or the heat insulating layer 3 is not particularly limited, but it is preferably a method of manual grinding or, if the surface to be polished is a flat surface, a polishing method (mechanical grinding), Remove slowly by grinding. For example, a diamond grindstone can be used when the method of manual grinding is used. When mechanically ground, for example, diamond abrasive grains or diamond pastes which disperse the diamond abrasive particles into a dispersion medium can be used.

<effect>

The nesting and nesting manufacturing method of the present embodiment can achieve the following effects.

When using a nest formed with a thermal insulation layer, nesting into the mold during installation, or When the mold is unloaded, when the heat insulating layer contacts other members, there is a possibility that the heat insulating layer may be defective or the like. Further, when the molded body composed of the resin which is shrunk during molding is protruded, the force is applied to the heat insulating layer, and when the forming and the peeling are repeated, there is a possibility that the heat insulating layer peels off or the like.

In the nesting of the present embodiment, as shown in the first (b) and the first (c), the heat insulating layer 3 is embedded in the recess provided in the nested body 2, and in the heat insulating layer 3 The entire circumference of the surface α, on the same side as the surface α, has the surface β of the nested body 2. Thereby, the heat insulating layer 3 is less likely to cause problems of defects or peeling. In this way, by using the nesting 1, in the insulating mold in which the nesting 1 is disposed, it is easy to constitute the heat insulating layer, and as described above, the heat insulating layer 3 is less likely to be damaged or peeled off, so the maintenance of the heat insulating mold is performed. Not complicated.

In the formed body 5 shown in Fig. 3, when the thickness of the bottom surface is thinner than the thickness of the side surface, and/or the area of the bottom surface is larger than the area of the side surface, when the nest 1 is not used, in the bottom surface The molten resin is difficult to flow and the filling is slow. However, when the nest 1 is used, the bottom surface of the molded body 5 is formed in contact with the heat insulating layer 3, so that the fluidity of the molten resin is easily maintained and the adhesion of the solder is improved in the bottom surface. .

When the size of the nest 1 is small, when the heat insulating layer 3 is formed by the melt method after the shape of the nested body 2 is formed, the spray area is small, so that overheating caused by the spray occurs, and the nested body is generated. 2 There are deformations. When the traveling speed of the spray is increased so that the heat is not excessively heated, the molten surface becomes rough, and the surface state of the heat insulating layer 3 hardly becomes good. In the nested manufacturing method of the present embodiment, first, the bulk 6 having a large size is sprayed. Therefore, even if the traveling speed of the melt is the normal speed, it does not overheat. Moreover, since the spray can be performed at a normal traveling speed, the molten surface is less rough. After the spraying, by the processing to the desired shape, the nest 1 of the heat insulating layer 3 having a good surface condition can be easily obtained. Further, the lower limit of the area of the melted surface is preferably 100 mm ² , and the lower limit of the volume of the nest 1 is preferably 5000 mm ³ . When the volume of the nest 1 exceeds 5000 mm ³ , it is less likely to overheat when it is sprayed, and the deformation of the nested body 2 can be effectively suppressed.

Moreover, when the size of the nest 1 is small, after the shape of the nested body 2 is made, when the heat insulating layer 3 is formed by the melt method, before being formed in the heat insulating layer 3, in order to be disposed in the nested body 2 The concave portion forms a base plating layer, and when the concave portion is sandblasted, the position of the thin portion surrounding the concave portion is shifted, and the concave portion is deformed. In the nested manufacturing method of the present embodiment, first, the block 6 having a large size is subjected to sand blasting, so that deformation of the concave portion can be easily prevented. Further, since the deformation of the concave portion caused by the sand blasting treatment can be effectively prevented, it is preferable to reserve a space of 0.5 mm or more in advance around the spray range.

"Second Embodiment"

<nesting>

Fig. 5 is a schematic view showing the plane of the nest 1A of the second embodiment; (a) is a perspective view; (b) is a sectional view showing the OO cross section of (a); and (c) is a PP profile showing (a). Sectional view. Further, in the second embodiment, the main points are different from the first embodiment. In the second embodiment, the same or equivalent components as those of the first embodiment are denoted by the same reference numerals. In the second embodiment, the description of the first embodiment will be omitted as appropriate.

As shown in Fig. 5, the nest 1A of the present embodiment has a nested body 2A and a heat insulating layer 3. That is, the nest 1A of the present embodiment is set The concave portion on the nested body 2A has not only the inclined surface γ and the bottom surface δ but also the vertical surface ε, which is different from the nest 1 of the first embodiment. The nest 1A is on the side of the nested body 2A and has a hole penetrating the protruding pin.

As shown in FIGS. 5(b) and 5(c), the recessed portion provided on the nested body 2A has a concave outer shape formed by the inclined surface γ, the bottom surface δ, and the vertical surface ε. In the recessed portion provided in the nested body 2A, the vertical surface ε is perpendicular to the vertical surface extending from the opening edge toward the bottom side of the recessed portion with respect to the surface formed by the opening edge of the recessed portion. Further, in the concave portion provided in the nested body 2A, the inclined surface γ is a slope formed from the lower end of the vertical surface ε toward the center of the bottom portion of the concave portion when the opening edge is regarded as the upper end of the vertical surface ε.

Fig. 6 is an enlarged view showing the dimensions of the periphery of the heat insulating layer 3 in the nest 1A of the second embodiment shown in Fig. 5(c). It is easy to form the heat insulating layer 3 by the melt method. Therefore, in Fig. 6, the dimension W in the width direction of the surface α of the heat insulating layer 3 and the dimension d ₁ in the height direction of the vertical plane ε are preferably the same. It is preferable that W/2≧d _{1 is} satisfied, and the size d ₂ of the projection of the height direction of the inclined surface γ and the size w ₁ of the projection of the bottom surface δ direction of the inclined surface γ preferably satisfy d ₂ ≦w ₁ .

The nest 1A of the second embodiment can be used in the same manner as the nest 1 of the first embodiment. That is, in the second figure, when the nest 1 is replaced with the nest 1A, it shows a cross-sectional view of the use state of the nest 1A. Here, the nest 1A is attached to the movable mold 21 in the same manner as the nest 1 in FIG. 2 . By using the nest 1A, the molded body similar to that in the case of using the nest 1 can be formed, and an example of the molded body 5 shown in Fig. 3 can be exemplified.

<Nested manufacturing method>

In the manufacturing method of the nest 1 according to the first embodiment described in the fourth embodiment, the nest 1A of the second embodiment is provided in the concave portion of the surface of the block 6, and is not used and is embedded. The article of the same shape as the recessed portion of the body 2 is used, and an article having the same shape as the recess provided on the nested body 2A is used, whereby it can be manufactured.

<effect>

The nesting and nesting manufacturing methods of the present embodiment have the following effects.

In the concave portion provided in the nested body 2A in the fifth (b) and the fifth (c), not only the inclined surface γ but also the vertical surface ε is formed, so that the thickness of the heat insulating layer 3 is thinned. Compared with the case of the first (b) and the first (c), it becomes less. Therefore, when the nested 1A is used, it is ensured that the heat insulating effect in the portion contacting the surface of the heat insulating layer 3 is further enhanced. In particular, as shown in Fig. 5(c), when the width of the heat insulating layer 3 is narrow, it is effective by ensuring that the heat insulating layer is further enhanced by the vertical surface ε, which ensures the occupation of more heat insulating layers.

Further, in the concave portion provided in the nested body 2A, when the vertical surface ε is formed while the inclined surface γ is formed, in the removal process in the case of manufacturing the nest 1A in accordance with the manufacturing method shown in Fig. 4 The removal of the thickness direction of the heat insulating layer 3 is such that, after reaching the position of the upper surface of the block 6, even if the heat insulating layer 3 is continuously removed, the width of the heat insulating layer 3 is temporarily kept constant. Therefore, even if the heat insulating layer 3 is excessively removed, the width or area of the range in which the heat insulating layer 3 is formed does not change immediately. Further, at the stage of designing the mold, the width of the heat insulating layer 3 can be determined, and even if the heat insulating layer 3 is excessively removed, the range in which the heat insulating layer is not formed (the insulating range is not possible) does not expand.

The other effects are the same as those achieved by the nesting and nesting manufacturing method of the first embodiment.

"Third Embodiment"

<nesting>

Fig. 7 is a schematic view showing the plane of the nest 1B of the third embodiment; (a) is a perspective view; (b) is a sectional view showing the QQ profile of (a); and (c) is an RR profile showing (a). Sectional view. In the third embodiment, the main points are different from the first embodiment. In the third embodiment, the same or equivalent configurations as those of the first embodiment are denoted by the same reference numerals. . Further, in the third embodiment, the description overlapping with the first embodiment will be omitted as appropriate.

As shown in Fig. 7, the nest 1B of the present embodiment has a nested body 2B and a heat insulating layer 3. In other words, the nest 1B of the present embodiment is different from the nest 1 of the first embodiment in that the entire upper surface of the nested body 2B has the heat insulating layer 3 and does not have a hole penetrating the protruding pin.

Fig. 8 is a cross-sectional view showing a state of use of the nest 1B of the third embodiment. The nest 1B is placed in the mold 10B to be used. The mold 10B has a movable mold 20B and a fixed mold 30B. The fixed mold 30B has a fixed mold body 31B and a nest 1B, a nest 22 and a nest 23 that are mounted on the fixed mold body 31B. The mold 10B is assembled from the movable mold 20B and the fixed mold 30B, whereby the cavity 4 is formed. The cavity face of the cavity 4 is composed of a nest 1B, a nest 22, a nest 23 and a movable die 20B. Further, the movable mold 20B preferably has a hole (not shown) penetrating the protruding pin so that the molten resin is filled into the cavity 4 and solidified, whereby the formed molded body is taken out.

The molten resin is filled into the cavity 4 formed in the mold 10B, and is solidified to form a molded body. By using the nest 1B, the molded body similar to that in the case of using the nest 1 can be formed, and an example of the molded body 5 shown in Fig. 3 can be exemplified.

<Nested manufacturing method>

Fig. 9 is a cross-sectional view schematically showing an example of a method of manufacturing the nest 1B of the third embodiment. The above manufacturing method includes a heat insulating layer forming step and a removing step.

In the heat insulating layer forming step, the states of the ninth (a1) and the ninth (a2) are the steps of the ninth (b1) and the ninth (b2) states. The heat insulating layer forming step is a step of forming the heat insulating layer 3 on the block 6 composed of the nesting material constituting the nest 1B to obtain the composite 7B including the block 6B and the heat insulating layer 3. Further, the nesting material may be the same as those exemplified in the first embodiment, and the block 6B may be produced by a previously known casting method or the like.

The method of forming the heat insulating layer 3 may be the same as those exemplified in the first embodiment.

In the removal process, the state of the ninth (b1) and ninth (b2) views is the process of the state of the ninth (c1) and the ninth (c2). As shown in FIG. 9, in the removing step, a part of the block 6B is removed in the width direction and the depth direction of the block 6B, and the heat insulating layer 3 is removed in the thickness direction, the width direction, and the depth direction of the heat insulating layer 3. Part of it. In this step, the removal of the block 6B and the heat insulating layer 3 is performed until the position indicated by the broken line in the ninth (b1) and ninth (b2) views is reached. The shape shown by this broken line corresponds to the outer shape of the nest 1B shown in the 9th (c1)th and 9th (c2).

The method of removing the bulk 6B or the heat insulating layer 3 may be the same as those exemplified in the first embodiment.

<effect>

The nesting and nesting manufacturing methods of the present embodiment have the following effects.

By using the nest 1B, the heat insulating layer can be easily formed in the insulating mold in which the nested 1B is disposed. For example, the shape of the cavity surface is relatively complicated. Therefore, even in a state where the movable mold or the fixed mold is integrated, it is difficult to form the heat insulating layer. By separately forming the nest 1B and forming the heat insulating layer 3 in the nest 1B, it is very It is easy to form a heat insulating layer which is in the heat insulating mold and constitutes a part of the desired cavity surface. Further, even if the heat insulating layer 3 is defective or peeled off, it is only necessary to replace the nesting 1B, so that the maintenance of the heat insulating mold is not complicated.

Similarly to the one described in the first embodiment, in the molded body 5 shown in Fig. 3, when the thickness of the bottom surface is thinner than the thickness of the side surface, and/or the area of the bottom surface is larger than the area of the side surface. When the nest 1B is used, it is easy to maintain the fluidity of the molten resin in the bottom surface of the molded body 5, and the adhesion of the weld is improved.

Further, the effects of the nested manufacturing method of the present embodiment are the same as those described in the first embodiment. That is, first, the bulk 6B having a large size is sprayed, so that even if the traveling speed of the melt is the normal speed, it does not overheat. Moreover, since the spray can be performed at a normal traveling speed, the molten surface is less rough. After the spraying, by the processing to the desired shape, the nest 1B having the heat insulating layer 3 having a good surface condition can be easily obtained.

Although the preferred embodiment of the nesting and nesting manufacturing method of the present invention has been described above, the present invention is not limited to the above embodiment, and can be implemented in various forms.

For example, in the first embodiment, as shown in the first (b) and the first (c), the entire surface α of the heat insulating layer 3 is placed on the same surface as the surface α, and there is a nest. The surface β of the body 2, however, may also be constituted by the absence of the surface β. Even in such a configuration, the effect of the heat insulating layer being embedded in the concave portion provided on the nested body can be exerted, so that the heat insulating layer is less likely to cause problems such as breakage or peeling.

In the first or second embodiment, the nest 1 or the nest 1A is used in the movable mold 20, but it may be used in the fixed mold 30B. Further, in the third embodiment, the nest 1B is used in a fixed mold, but it may be used in a possible mold. In this way, the nest of the present invention can be disposed on the movable mold side or on the fixed mold side.

In the first or second embodiment, the side of the hole penetrating the pin is nested in the side surface of the body 2 or the nested body 2A. However, these positions are merely examples, and the molded body is not particularly limited as long as the molded body can be taken out. It can be suitably selected in consideration of the appearance, strength, and the like of the molded body. For example, it may not be formed on the side surface of the nested body 2 or the nested body 2A, but may be formed on the side surface of the cubic shape field in which the heat insulating layer 3 is formed, and may penetrate the hole in the nesting body 2 or the nested body 2A up and down, or may be formed as Through the hole of the protruding pin. Further, in the third embodiment, the nest 1B does not have a hole penetrating the protruding pin. However, similarly to the nest 1 or the nest 1A, the nest 1B may be formed on the side surface and penetrate the heat insulating layer 3 and the nest body 2B up and down. The hole is formed as a hole penetrating the protruding pin.

1‧‧‧ nesting

2‧‧‧ nested ontology

3‧‧‧Insulation layer

‧‧‧Width

‧‧‧‧ surface

Β‧‧‧ surface

γ‧‧‧Bevel

Δ‧‧‧ bottom

Θ‧‧‧outer corner

Claims (8)

A nesting is disposed in a mold having: a nested body; and a heat insulating layer disposed on at least a portion of the nested body to form a portion of the cavity face. The nesting according to the first aspect of the invention, wherein the heat insulating layer is embedded in a recess provided in the nested body. The nesting as described in claim 2, wherein a surface of the nested body exists on the entire surface of the surface of the heat insulating layer on the same surface as the surface. The nesting as described in claim 3, wherein the width of the surface of the nested body present around the entire surface of the heat insulating layer is greater than 0.1 mm. The nesting according to any one of claims 2 to 4, wherein the concave portion has a slope formed from an opening edge of the concave portion toward a center of a bottom portion of the concave portion. The nesting according to any one of claims 2 to 4, wherein the recess has a vertical surface that is perpendicular to the aforementioned opening edge with respect to a surface formed by an opening edge of the recess The bottom side of the recess extends; and the inclined surface is formed from the lower end of the vertical surface toward the center of the bottom of the recess when the opening edge is the upper end of the vertical surface. A nested manufacturing method for manufacturing the nesting described in claim 1, which comprises: a heat insulating layer forming process, which is composed of nested materials constituting the aforementioned nesting A heat insulating layer is formed on the block to obtain a composite body including the block body and the heat insulating layer; and a removing step of removing a part of the block body from the composite body, or a part of the block body and a part of the heat insulating layer. The nested manufacturing method according to claim 7, wherein the nesting system is nested according to items 2 to 4 of the patent application scope, and the heat insulating layer forming step is a nesting material constituting the nesting. In this configuration, a heat insulating layer is formed on the block having the concave portion on the surface, and at least the concave portion is filled with the heat insulating layer to obtain a composite body including the composite body of the block body and the heat insulating layer.