JPH09201826A - Molding die of resin and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive and almost distortion-free high qualitative accuracy molding die of resin which can be very easily manufactured in a short time by omitting an operation to grind the front and rear faces of a resin part which requires a large amount of labor in a conventional molding die of resin and an operation to bond the resin part with a supporting plate, and a device for manufacturing this molding die. SOLUTION: This molding die of resin is for an architectural exterior wall material and is composed of a front layer part 2a consisting of a synthetic resin material for molding the outer wall face side of the architectural exterior wall material, a resin part 2 of a laminated structure consisting of a glass mat 2b as an intermediate layer part and a rear layer part 2c and a supporting plate 3 fastened integrally to the rear face of the resin part 2 when molding the rear layer part 2c of the resin part 2. A device for manufacturing the molding die of resin of a specified shape manufactures the molding die by packing the synthetic resin between a bottom force 12 with a molding face member 13 to decide the front surface shape of the molding die of resin and a top force 11 with a detachable supporting plate 3 formed integrally with the rear face of the molding die of resin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin mold and an apparatus for manufacturing the same, and more particularly to a support plate on the back layer portion located at the rearmost portion of the resin portion before being cured. The present invention relates to a resin-made mold integrally mounted and a manufacturing apparatus therefor.

[0002]

2. Description of the Related Art Conventionally, a plaster mold is used as the mold.
There are a metal mold, a resin mold, and the like. Molds made of gypsum are resistant to heat and are therefore used for molding products made of substances having a high melting point such as metal. Since a metal mold requires machining by an NC machine, it takes a lot of time and labor, but it has high accuracy and durability, and is suitable for a product requiring high accuracy and mass production. The resin-made mold is not as durable as the metal-made mold, but has a certain degree of durability, is easy to process, and is low in material cost. For this reason, it is suitable for molding special wall bumpers and interior materials for which the number of units sold is relatively small, as well as building wall molding dies that meet the needs of customers such as custom-built homes.

Generally, a resin mold is composed of a resin portion that determines the shape of a product and a support plate that supports the resin portion. Then, in order to mount the resin portion on the support plate,
It is necessary to polish the back layer portion of the resin portion in advance to make the thickness uniform and to give a certain flat surface. After that, the back surface of the resin portion and the support plate are adhered and fixed with an adhesive.

Now, the manufacturing process of the conventional resin mold will be described. 9 to 11 are cross-sectional views showing a manufacturing process of a conventional resin mold.

As shown in FIG. 11C, a resin mold 21 manufactured by a conventional manufacturing process has a resin portion 22.
The resin portion 22 has a three-layer structure including a surface layer portion 22a, an intermediate layer portion 22b, and a back layer portion 22c. Further, as shown in (a) of FIG. 9 and FIG. 10, the manufacturing die 31 for molding the resin portion 22 of the resin molding die 21 has a molding surface 3 that determines the surface shape of the resin portion 22.
1a.

First, as shown in FIG. 9A, a synthetic resin, which is a surface layer portion 22a of the resin portion 22, is laminated on a manufacturing die 31 having a molding surface 31a having a predetermined pattern or the like. The resin for the surface layer portion 22a is laminated on the manufacturing mold 31 by hand-laying work. Then, as shown in FIG. 9B, the glass fiber and the resin to be the intermediate layer portion 22b are laminated on the surface layer portion 22a laminated in FIG. 9A.
Glass fiber and resin are used for the intermediate layer portion 22b.
The intermediate layer portion 22b is also stacked by hand.
Further, as shown in FIG. 9C, a resin to be the back layer 22c is laminated on the intermediate layer 22b laminated in FIG. 9B. The resin for the back layer portion 22c is laminated by manual loading and pouring.

In the state of FIG. 9C, after waiting for the curing of the resin portion 22 to finish, the resin portion 22 is released from the manufacturing die 31, as shown in FIG. And
As shown in FIG. 10B, the burr 22d protruding on the outer periphery of the resin portion 22 is removed. The burr 22d is removed with a sander or the like. As shown in (c) of FIG. 10, the resin portion 22 from which the peripheral burr 22d has been removed grinds the surface of the back layer portion 22c to make the thickness of the entire resin portion 22 uniform and the surface of the back layer portion 22c. Make it a smooth plane. The resin portion 22 is completed through such working steps.

Next, as shown in FIG. 11 (a), an adhesive 23a is applied to the support plate 23 to attach the resin portion 22 to the support plate 2.
Adhere to 3. After the bonding work between the resin portion 22 and the support plate 23 is completed, the excess adhesive 23b protruding to the periphery is removed as shown in FIG. 11 (b). Thus, the resin mold 21 as shown in FIG. 11C is completed.

[0009]

However, as described above, in the conventional resin molding die 21, in order to mount the resin portion 22 on the support plate 23, the back layer portion 22c of the resin portion 22 is previously formed.
Need to be polished to make the thickness uniform and to have a smooth flat surface.
This work required a lot of labor and time.

In addition, since the back layer 22c of the resin portion 22 and the support plate 23 are adhered and fixed to each other by the adhesive 23a, the polishing surface of the back layer 22c is required to have a high level of precision. Back layer 22c
Was sometimes peeled from the support plate 23.

Further, the resin of each layer constituting the resin portion 22 is such that when the resin softened by a volatile solvent or the like is exposed to the air, only the solvent is vaporized and cured, so that the resin is directly exposed to the air. The curing speed was different between the part and the inside. For this reason, the resin portion 22 is unavoidably distorted during the curing of the resin, which poses a problem when the large-sized resin mold 21 is manufactured. For example, in the case of manufacturing an outer wall material for construction, a relatively large resin mold 21 is required, and it has to be repeatedly manufactured many times until a resin mold 21 having a small distortion is formed.

Therefore, the present invention is extremely easy by omitting the work of polishing the back layer of the resin portion and the work of adhering the resin portion to the support plate, which required a great deal of labor in the conventional resin mold. It is an object of the present invention to provide a resin-made molding die which can be manufactured in a short time, is inexpensive, has a small distortion, and has a high quality accuracy, and a manufacturing apparatus therefor.

[0013]

A resin molding die according to the invention of claim 1 is a molding die for an outer wall material for construction, and is made of a synthetic resin material for molding the outer wall surface of the outer wall material for construction. It is composed of a resin portion having a laminated structure and a support plate integrally fixed to the back surface of the resin portion at the time of molding the back layer portion of the resin portion. Here, a steel plate is used for the support plate because it is generally difficult to deform due to cost, but the support plate is not limited to the steel plate as long as it is difficult to deform, and for example, fine ceramics or the like may be used.

Therefore, according to the resin molding die of the first aspect of the present invention, it is not necessary to polish the back layer portion of the resin portion before mounting the resin portion on the support plate as in the conventional case.
It is not necessary to bond the resin portion to the support plate, and the resin portion is not distorted during curing of the back layer portion. Further, the support plate is not easily peeled off after the back layer portion is cured.

The resin mold according to the invention of claim 2 is
The support plate according to claim 1 has a plurality of holes through which resin for the back layer portion of the resin portion can enter.

Therefore, according to the resin mold of the second aspect of the invention, the resin of the back layer portion of the resin portion penetrates into the plurality of holes of the support plate, and the anchor effect causes the resin portion after the back layer portion is cured. Since the support plate and the support plate are more closely adhered to each other, the support plate is more difficult to peel off.

The resin mold according to the invention of claim 3 is
The expanded metal is disposed on the resin portion side of the support plate according to claim 1 or 2. Here, the expanded metal is attached to the support plate in advance by spot welding or the like.

Therefore, according to the resin mold of the third aspect of the invention, the resin penetrates into the expanded metal provided on the resin portion side of the support plate, and the back layer portion is more firmly joined to the support plate. To do.

The resin mold according to the invention of claim 4 is
A glass mat made of glass fibers is previously fixed to the resin portion side of the support plate according to any one of claims 1 to 3. Here, the glass mat may be formed of glass fibers and have a predetermined shape, or a commercially available glass mat may be cut.

Therefore, according to the resin molding die of the fourth aspect of the present invention, since the glass mat is fixed to the support plate, the support plate is more difficult to peel off after the back layer portion of the resin portion 2 is cured.

According to a fifth aspect of the present invention, there is provided a resin molding die manufacturing apparatus, wherein a synthetic resin is filled between an upper mold and a lower mold to manufacture a resin molding mold having a predetermined shape. In the apparatus, a molding surface portion that determines the surface shape of the resin molding die is detachably attached to the upper mold or the lower mold.

Therefore, the apparatus for manufacturing a resin mold according to the fifth aspect of the present invention, each time the shape of the molding target product is changed,
Only the molding surface part that determines the shape of the resin part of the resin molding mold that molds the product can be replaced, the part other than the molding surface part can be reused as many times as necessary without reducing the industrial waste. Connect

According to a sixth aspect of the present invention, there is provided a resin molding die manufacturing apparatus, wherein a lower mold having a molding surface portion for determining a surface shape of the resin molding die and a support plate integrated with a back surface of the resin molding die. In a device for manufacturing a resin-made mold for manufacturing a resin-made mold having a predetermined shape by filling a synthetic resin between the upper mold and the upper mold, which is detachably mounted, on the center line of the upper mold and on both sides. The upper die is rotatable around a supporting rod located.

Therefore, according to the resin molding die manufacturing apparatus of the invention of claim 6, it is easy to appropriately change or move the direction of the upper mold for molding the resin molding die according to the work. You can

[0025]

Embodiments of the present invention will be described below. 1 to 3 are sectional views showing a manufacturing process of a resin mold according to an embodiment of the present invention, and FIG. 4 is an exploded perspective view showing an upper mold for manufacturing a resin mold according to an embodiment of the present invention. FIG. 5 and FIG. 5 are exploded perspective views showing a lower mold for manufacturing a resin mold according to an embodiment of the present invention.

As shown in FIG. 3 (c), the resin molding die 1 of this embodiment has a resin portion 2 made of a synthetic resin material, which is a portion for molding a product, and a steel plate supporting the resin portion 2. And a support plate 3 made of. The resin portion 2 has a three-layer structure including a surface layer portion 2a, a glass mat 2b formed of glass fiber as a reinforcing material for the intermediate layer, and a back layer portion 2c. This resin mold 1 is used as a mold for building exterior wall materials.

To mold the resin mold 1 of this embodiment, a manufacturing mold 10 is used, and this manufacturing mold 10 has an upper mold 11
And the lower die 12 are included. Here, details of the manufacturing die 10 will be described. FIG. 4 is an exploded perspective view showing the upper mold 11, and shows how the support plate 3 of the resin mold 1 is mounted on the upper mold 11. Further, FIG. 5 is an exploded perspective view showing the lower mold 12, and shows how the molding surface member 13 that determines the shape of the resin portion 2 of the resin molding mold 1 is mounted on the lower mold base 14.

As shown in FIG. 4, a support plate mounting portion 11a for mounting the support plate 3 of the resin mold 1 is formed in the center of the upper mold 11 in a concave shape by the thickness of the support plate 3. Has been done. The support plate 3 has a plurality of bolt holes 3a for attaching the support plate 3 to the upper mold 11, and a plurality of holes 3b through which the resin of the back layer 2c of the resin portion 2 penetrates. There is. Note that the holes 3b of the support plate 3 are not necessarily provided exclusively, but extra bolt holes 3a may be provided so that the bolt holes 3a also serve as the holes. Also, the support plate 3
A resin injection port 3c for injecting a resin for molding the back layer portion 2c of the resin portion 2 is formed in the central portion of the. The support plate mounting portion 11a of the upper die 11 also has bolt holes 3 of the support plate 3.
a and a bolt hole 11 at a position corresponding to the resin injection port 3c.
f and the resin injection port 11b are provided respectively. Upper mold 1
The support plate 3 is attached to the support plate mounting portion 11a of No. 1 by the bolt 11f.
And the bolts 11e are attached through the bolt holes 3a, but when the support plate 3 is attached to the support plate attachment portion 11a of the upper die 11, the surface of the support plate 3 of the upper die 11 and the support plate of the upper die 11 are attached. It is flush with the surface other than the mounting portion 11a. An expanded metal may be attached in advance to the resin portion 2 side of the support plate 3 by spot welding.

At the end of the upper mold 11, resin for the back layer 2c of the resin part 2 of the resin mold 1 is filled with the resin injection port 11
Vacuum suction port 1 for promoting injection when injecting from b
1c, and a reduced-pressure suction port 11d for clamping the die for strengthening the clamping with the lower die 12 are provided. Vacuum suction port 11
c is a vacuum suction groove 14 formed around the lower mold base 14 of the lower mold 12 when the upper mold 11 and the lower mold 12 are combined.
The pressure reducing suction port 11d for mold clamping is provided so as to communicate with a. The vacuum suction port 11d is used to increase the degree of adhesion with the lower mold 12 when the upper mold 11 and the lower mold 12 are clamped together. It is drilled at a position where

Support rods 11g are provided at both ends of the upper die 11 so that the upper die 11 can be supported by the support 15, and the receiving portions 15a of the support 15 have both ends of the upper die 11. The support rod 11g is supported, and the upper die 11 can rotate about the support rod 11g as a fulcrum if necessary.

On the other hand, as shown in FIG. 5, the lower mold 12 is composed of a molding surface member 13 for forming the surface layer portion 2a of the resin portion 2 of the resin molding die 1 and the lower mold base 14. Cage,
A molding surface receiving portion 14c for mounting the molding surface member 13 is formed in the center of the lower mold base 14. Therefore,
In the lower mold 12, the molding surface member 13 can be replaced appropriately. The molding die 1 made of resin is provided on the surface of the molding surface member 13.
A pattern for determining the shape of the surface of the resin portion 2 is provided. Further, around the lower die substrate 14, the back layer portion 2c is formed so as to facilitate the injection of the resin when the back layer portion 2c of the resin portion 2 is molded.
Is formed to communicate with the decompression suction groove 14a. The decompression suction groove 14a also communicates with the decompression suction port 11c of the upper die 11 when the upper die 11 and the lower die 12 are combined. Around the vacuum suction groove 14a, a seal member 14b is interposed in parallel in an annular shape in order to increase the degree of adhesion between the upper mold 11 and the lower mold 12, and the groove portion located between the seal members 14b is When the mold 11 and the lower mold 12 are clamped, the upper mold 11 is evacuated by the mold clamping vacuum suction port 11d. A hanging member 14d including an eyebolt or the like is provided on the side surface of the lower mold base 14 and serves as a hook when the lower mold 12 is moved by a crane or the like.

Next, the manufacturing die 10 constructed as described above.
Now, the procedure for molding the resin mold 1 will be described with reference to FIGS. 1 to 3.

First, as shown in FIG. 1A, the upper mold 1
The support plate 3 is attached to the support plate attachment portion 11a of No. 1. The support plate 3 is provided with bolts 11e projecting from above the upper mold 11 and penetrating through the bolt holes 11f.
It is fixed by screwing it into a. Further, a glass mat 2b made of glass fiber is screwed into a bolt hole 3a of the support plate 3 and fixed to the surface of the support plate 3 on the resin portion 2 side by a bolt 11e or the like.

On the other hand, as shown in FIG. 1B, the surface layer portion 2a of the resin portion 2 is molded on the lower mold 12 in which the molding surface member 13 is attached to the molding surface receiving portion 14c of the lower mold base 14. The resin for doing so is laminated.

Then, as shown in FIG. 2A, a glass mat 2b made of glass fiber or the like is formed on the surface layer 2a.
The upper die 11 having the support plate 3 fixed thereto is assembled on the lower die 12, and the die is clamped by the fastener 16 or the like. At this time, a vacuum is drawn from the mold clamping vacuum suction port 11d to increase the degree of adhesion between the upper mold 11 and the lower mold 12.

Thereafter, as shown in FIG. 2B, the back layer 2 of the resin part 2 is passed through the resin injection port 11b provided in the upper mold 11 and the resin injection port 3c provided in the support plate 3.
Resin for the back layer 2c is injected into the space c. At this time, the air in the space serving as the back layer 2c is evacuated through the vacuum suction groove 14a formed around the lower mold 12 and the vacuum suction port 11c provided in the upper mold 11. In this way, the resin spreads in the space that becomes the back layer portion 2c, and the back layer portion 2c of the resin portion 2 is formed. This resin is used in the surface layer 2a
It also penetrates into the glass mat 2b. Also, the back layer portion 2c
The resin filled for use also enters the holes 3 b formed in the support plate 3 in plural numbers. It should be noted that glass fibers having a low coefficient of thermal expansion, such as glass fibers, are previously mixed in the resin for the back layer 2c, and as a result, the glass fibers and the like enter the resin. By appropriately adjusting the content of the glass fiber, the coefficient of thermal expansion of the resin portion 2 can be matched to the coefficient of thermal expansion of the support plate 3 as much as possible, and the difference in the coefficient of thermal expansion between the support plate 3 and the resin portion 2 is caused. The warp can be prevented, and the support plate 3 and the resin portion 2 can be firmly adhered to each other.

When the resin portion 2 is hardened, (a) in FIG.
As shown in, the upper mold 11 is opened, and the resin mold 1 is released. In this state, as shown in FIG. 3 (b), unnecessary resin is squeezed out from the resin injection port 11b of the upper die 11 around the resin injection port 11b and around the back layer 2c. , Remove these squeezed out unwanted resin. Thus, the resin mold 1 as shown in FIG. 3C is completed.

FIG. 6 is a perspective view showing the overall construction of a resin molding die manufacturing apparatus according to an embodiment of the present invention. As shown in FIG. 6, resin is injected into the resin injection port 11 b of the upper mold 11 by the injection device 17. At this time, the decompression device 1
The vacuum suction groove 1 formed around the lower mold 12 by
4a and the vacuum suction port 11c provided in the upper mold 11, a vacuum is drawn. However, since the excess resin is sucked simultaneously with the air from the vacuum suction groove 14a, the vacuum device 18 communicating with the vacuum suction groove 14a is also drawn. A resin trap 19 for storing an excess resin is interposed in the middle of the process.

As described above, the resin molding die 1 of this embodiment
Is a mold for a building outer wall material, and has a laminated structure including a surface layer portion 2a made of a synthetic resin material for molding the outer wall surface of the building outer wall material, a glass mat 2b as an intermediate layer portion, and a back layer portion 2c. The resin portion 2 and the support plate 3 integrally fixed to the back surface of the resin portion 2 when the back layer portion 2c of the resin portion 2 is molded.

Therefore, in this resin mold 1, there is no need to bond the support plate 3 after the resin portion 2 is hardened as in the conventional case, and it is not necessary to polish the back layer portion 2c of the resin portion 2. The work process can be omitted. Also, the back layer portion 2c
Since the support plate 3 is mounted before the back layer 2c is hardened, the back layer 2c and the support plate 3 are firmly adhered to each other, and the difficulty of peeling the back layer 2c has nothing to do with the finish of the polished surface of the back layer 2c. become. As a result, the resin molding die 1 can be manufactured extremely easily in a short time, is inexpensive, has a small distortion, and has a high quality accuracy.

In particular, in the resin mold 1 of this embodiment,
Since the support plate 3 is formed with a plurality of holes 3b through which the resin for the back layer 2c of the resin portion 2 can enter, the back layer 2c is supported by the support plate due to the anchor effect of the resin entering the holes 3b. Since the support plate 3 is strongly bonded to the support plate 3, the support plate 3 is more difficult to peel off, and the reliability is improved. When the bolt hole 3a is used instead of the hole 3b, the anchor effect is further enhanced. Further, if an expanded metal is attached to the resin portion 2 side of the support plate 3 by spot welding in advance, the resin penetrates into the expanded metal, and the back layer portion 2c becomes the support plate 3
Since it is more firmly bonded to the support plate 3, the support plate 3 is not easily peeled off reliably. In addition to the expanded metal, a mesh-like member into which resin easily penetrates may be used.

Further, since the glass mat 2b formed of glass fiber and having a predetermined shape is previously fixed to the resin portion 2 side of the support plate 3, the support plate 3 is further peeled off after the back layer portion 2c is cured. Hateful. In the above description, the support plate 3
Although the glass mat 2b is fixed in advance to the above, the glass mat 2b may be placed on the surface layer portion 2a of the resin portion 2. However, in order to increase the adhesion between the resin portion 2 and the support plate 3, it is preferable to fix the glass mat 2b to the support plate 3 in advance.

Further, a molding surface member 13 for determining the surface shape of the resin-made molding die 1 is detachably attached to the lower mold 12, which is the manufacturing die 10 of the manufacturing apparatus for manufacturing the resin-made molding die 1. Therefore, only the molding surface member 13 can be replaced. Therefore, every time the shape of the product to be molded is changed, the lower mold base 1 which is a part other than the molding surface member 13 that determines the shape of the resin part 2 of the resin mold 1 for molding the product
4 and upper mold 11 can be reused as many times as they are,
It is extremely economical and contributes to the production of inexpensive products, reduces industrial waste, and is effective in protecting the global environment. As a matter of course, the lower mold base 14 and the molding surface member 13 may be integrally molded to form the lower mold 12, but as in the present embodiment, the molding surface member 1 is formed on the lower mold base 14.
It goes without saying that it is more economical to make the 3 removable.

Here, the lower mold base 14 of the lower mold 12 is used.
The manufacturing die 10 in which the molding surface member 13 is mounted is described above. However, in the case of the manufacturing die 10 in which the lower mold 12 and the upper mold 11 are reversed, the molding surface member 13 is mounted in the upper mold 11,
In this case, of course, it can be applied.

Further, the upper mold 11 of the manufacturing mold 10 of the present manufacturing apparatus.
The upper die 11 is rotatable around the support rods 11g located on both sides of the center of gravity of the upper die 11. In this embodiment, the upper mold 11 is made to face the upper mold 1 in the opposite direction.
The support plate 3 is attached to the support plate attachment portion 11a of the lower mold 12
When placing the upper mold 11 on the
It is lifted by a crane or the like and placed on the lower mold 12. Therefore, the direction of the upper mold 11 can be easily changed or moved appropriately according to the work, and the work efficiency is very good.

By the way, although the resin-made mold 1 can be manufactured by the manufacturing apparatus shown in FIG. 6, it is preferable to use the manufacturing apparatus shown in FIGS. 7 and 8 in order to mass-produce the resin-made mold 1. FIG. 7 is a perspective view showing an overall configuration of a resin molding die manufacturing apparatus according to another embodiment of the present invention, and FIG. 8 shows a molding line of a resin molding die manufacturing apparatus according to another embodiment of the present invention. It is a front view shown.

As shown in FIG. 7, the resin molding die 1 can be manufactured in a short time by injecting a large amount of resin into the manufacturing die 10 from the injection device 17 through a plurality of tubes in a short time. it can. In addition, as shown in FIGS. 7 and 8, the lower mold 12 of the manufacturing mold 10 is placed on the carriage 20 and the rail 2
0a is moved and sequentially conveyed to the position of the support base 15 of the upper mold 11, the upper mold 11 is placed on the lower mold 12 at the position of the support base 15 and tightened with the tightening tool 16 to set the manufacturing mold 10, and the injection device 1
Resin is injected into the manufacturing mold 10 from 7. And manufacturing type 1
When the resin injected into 0 is cured, remove the upper mold 11,
If the carriage 20 is displaced and the resin mold 1 is removed, the resin mold 1 can be continuously manufactured one after another, and mass production becomes possible.

Further, the molding surface member 13 of the lower mold 12 is made up of a resin portion 13a and a frame frame 13b around the resin portion 13a.
And the resin part 13a and the frame frame 13b.
The molding surface member 13 made of may be supported by the lower mold substrate 14. Also in this case, the lower mold base 14 can be used in common even if the mold design is changed, which is economical.

In the above description, the resin molding die 1 as a molding die for the building outer wall material and the manufacturing apparatus for the resin molding die 1 have been described, but it is naturally applicable to a molding die other than the building outer wall material.

[0050]

As described above, in the resin mold according to the first aspect of the present invention, it is not necessary to polish the back layer portion of the resin portion before mounting the resin portion on the support plate as in the conventional case. With
Since it is not necessary to bond the resin part to the support plate, it can be manufactured extremely easily in a short time, and the resin part does not distort during curing of the back layer part, and the support plate is easy after curing the back layer part. Since it does not peel off easily, the resin molding die is inexpensive, has little distortion, and is highly accurate.

In the resin mold according to the second aspect of the present invention, the resin in the back layer portion of the resin portion penetrates into the plurality of holes in the support plate, and the anchor effect allows the resin portion and the support plate to be cured after the back layer portion is cured. However, the reliability is improved because the support plate is more firmly fixed and the support plate is more difficult to peel off. Also, if expanded metal is attached to the resin side of the support plate by spot welding in advance, the resin will penetrate into the expanded metal and the back layer will bond more firmly to the support plate, so the support plate is secure. Hard to peel off.

In the resin mold according to the third aspect of the invention, the resin penetrates into the expanded metal disposed on the resin portion side of the support plate, and the back layer portion is more firmly joined to the support plate. Since the plate does not come off reliably, the reliability is greatly improved.

In the resin mold according to the invention of claim 4, the glass mat is fixed to the support plate, and the support plate is more difficult to peel off after the back layer portion of the resin portion is hardened, so that the reliability is further improved. .

In the resin molding die manufacturing apparatus of the fifth aspect of the present invention, the molding surface portion is detachably attached to the upper die or the lower die, and only the molding surface portion is replaced every time the shape of the molding target product is changed. Since it can be reused many times without discarding parts other than the molding surface, it is extremely economical,
In addition to contributing to the manufacture of inexpensive products, it also leads to a reduction in industrial waste and is effective in protecting the global environment.

In the resin molding die manufacturing apparatus according to the sixth aspect of the present invention, the upper mold is rotatable so that the direction of the upper mold for molding the resin molding die can be appropriately changed or moved according to the work. It is very efficient because it can be done easily.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a manufacturing process of a resin mold according to an embodiment of the present invention.

FIG. 2 is a view showing a resin mold according to an embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a manufacturing process following.

FIG. 3 is a view of a resin molding die which is one embodiment of the present invention.
FIG. 6 is a cross-sectional view showing a manufacturing process that follows.

FIG. 4 is an exploded perspective view showing an upper mold for manufacturing the resin mold according to the embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a lower mold for manufacturing a resin mold according to an embodiment of the present invention.

FIG. 6 is a perspective view showing an overall configuration of a resin molding die manufacturing apparatus according to an embodiment of the present invention.

FIG. 7 is a perspective view showing an overall configuration of a resin molding die manufacturing apparatus according to another embodiment of the present invention.

FIG. 8 is a front view showing a molding line of a resin molding die manufacturing apparatus according to another embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a manufacturing process of a conventional resin mold.

FIG. 10 is a cross-sectional view showing the manufacturing process of the conventional resin mold following FIG. 9.

FIG. 11 is a cross-sectional view showing a manufacturing process of a conventional resin mold following FIG.

[Explanation of symbols]

 1 Resin Mold 2 Resin Part 2a Surface Layer Part 2b Glass Mat 2c Back Layer Part 3 Support Plate 3a Bolt Hole 3b Hole 3c Resin Injection Port 10 Manufacturing Mold 11 Upper Mold 11a Support Plate Attachment Portion 11b Resin Injection Port 11c Decompression Suction Port 11d Decompression suction port for mold clamping 11e Bolt 11f Bolt hole 11g Support rod 12 Lower mold 13 Molding surface member 14 Lower mold base 14a Decompression suction groove 14b Sealing member 14c Molding surface receiving part 14d Hanging member 15 Supporting base 15a Receiving part 16 Clamping tool 17 Injection Device 18 Decompression Device 19 Resin Trap

Claims (6)

[Claims] 1. A molding die for an exterior wall material for construction, comprising: a resin portion having a laminated structure made of a synthetic resin material for molding the outer wall surface of the exterior wall material for construction; and a back layer portion of the resin portion when being formed. A resin molding die comprising a support plate integrally fixed to the back surface of the resin portion. 2. The resin molding die according to claim 1, wherein the support plate has a plurality of holes through which the resin for the back layer of the resin portion can penetrate. 3. The expanded metal is disposed on the resin plate side of the support plate.
Alternatively, the resin mold according to claim 2. 4. The resin molding die according to claim 1, wherein the support plate has a glass mat made of glass fiber fixed to the resin portion side in advance. . 5. A resin molding die manufacturing apparatus for manufacturing a resin molding die having a predetermined shape by filling a synthetic resin between the upper die and the lower die, wherein the resin molding is performed on the upper die or the lower die. An apparatus for manufacturing a resin-made mold, wherein a molding surface portion that determines the surface shape of the mold is detachably mounted. 6. Between a lower mold having a molding surface portion that determines the surface shape of the resin mold and an upper mold to which a support plate integrated with the back surface of the resin mold is detachably mounted. In a resin molding die manufacturing apparatus that fills a synthetic resin with a predetermined shape to manufacture a resin molding die, the upper die can be rotated around support bars located on both sides of the center line of the upper die. An apparatus for manufacturing a resin molding die, characterized in that