JP3308799B2 - Resin mold and its manufacturing equipment - Google Patents

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 method for attaching a support plate to a back layer located at the end of a resin before the back layer is cured. The present invention relates to an integrally mounted resin mold and a manufacturing apparatus therefor.

[0002]

2. Description of the Related Art Gypsum molds have conventionally been used as molds.
There are a metal mold and a resin mold. Gypsum molds are resistant to heat and are therefore used for molding products made of a substance having a high melting point, such as metal. A metal mold requires processing by an NC machine, and thus requires considerable labor and time. However, since it has high accuracy and durability, it is suitable for products requiring high accuracy and mass production. Although the mold made of resin is not as durable as the mold made of metal, it has some durability, is easy to process, and has a low material cost. Therefore, it is suitable for molding special automobile bumpers and interior materials having a relatively small number of units sold, as well as a mold for forming an exterior wall material for a building according to a customer's request such as a custom-built house.

[0003] Usually, a resin molding die comprises a resin portion for determining the shape of a product and a support plate for supporting the resin portion. And in order to attach the resin part to 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 form a constant smooth plane. After that, the back surface of the resin portion and the support plate are tightly fixed with an adhesive.

Here, a description will be given of a manufacturing process of a conventional resin mold. 9 to 11 are cross-sectional views showing steps of manufacturing a conventional resin mold.

[0005] As shown in FIG. 11 (c), a resin mold 21 manufactured by a conventional manufacturing process includes a resin part 22.
And a support plate 23, and the resin portion 22 has a three-layer structure of a surface layer portion 22a, an intermediate layer portion 22b, and a back layer portion 22c. As shown in FIGS. 9 and 10A, the production mold 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 to be a surface layer portion 22a of the resin portion 22 is laminated on a manufacturing die 31 having a molding surface 31a provided with a predetermined pattern or the like. The resin for the surface portion 22a is laminated on the production mold 31 by a manual loading operation. Then, as shown in FIG. 9B, a glass fiber and a resin to be the intermediate layer 22b are laminated on the surface layer 22a laminated in FIG. 9A.
Glass fiber and resin are used for the intermediate layer portion 22b.
The intermediate layer 22b is also stacked by a manual operation.
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 hand-loading work and pouring.

After waiting for the curing of the resin portion 22 to end in the state of FIG. 9C, the resin portion 22 is removed from the production mold 31 as shown in FIG. And
As shown in FIG. 10B, the burrs 22d protruding from the outer periphery of the resin portion 22 are removed. The burrs 22d are removed with a sander or the like. As shown in FIG. 10C, the resin portion 22 from which the surrounding burrs 22d have been removed is formed by grinding the surface of the back layer portion 22c so as to make the entire resin portion 22 uniform in thickness and to reduce the surface of the back layer portion 22c. Make it a smooth plane. Through such working steps, the resin part 22 is completed.

Next, as shown in FIG. 11A, an adhesive 23a is applied to the support plate 23, and the resin portion 22 is attached to the support plate 2.
Adhere to 3. After the bonding operation between the resin portion 22 and the support plate 23 is completed, as shown in FIG. 11B, the excess adhesive 23b projecting to the periphery is removed. Thus, a 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 required.
Must be polished to make the thickness uniform and a smooth flat surface.
This required a lot of work and time.

In addition, in order to adhere and fix the back layer 22c of the resin portion 22 and the support plate 23 by bonding with the adhesive 23a, the polished surface of the back layer 22c is required to have considerable planar accuracy. Even if it is intended to adhere well,
Was peeled off from the support plate 23 in some cases.

The resin of each layer constituting the resin portion 22 is a material which is softened by a volatile solvent or the like and is exposed to air so that only the solvent is vaporized and hardened. The curing speed was different between the part and the inside. For this reason, the resin part 22 is inevitably distorted during the curing of the resin, which has been a problem when manufacturing a large-sized resin mold 21. For example, when manufacturing an exterior wall material for a building, a relatively large resin mold 21 is required, and the resin mold 21 must be repeatedly manufactured until a resin mold 21 with small distortion is formed.

Therefore, the present invention omits the work of polishing the back layer of the resin portion and the work of bonding the resin portion to the support plate, which require a great deal of labor in the conventional resin mold, and is extremely easy. It is an object of the present invention to provide a resin mold which can be manufactured in a short time, is inexpensive, has low distortion and high quality accuracy, and a manufacturing apparatus therefor.

[0013]

According to a first aspect of the present invention, there is provided a resin mold for forming a building outer wall material, comprising a synthetic resin material for forming the outer wall side of the building outer wall material. and the resin portion of the laminated structure, Ri Do from the back to a supporting plate which is fixed integrally in the resin portion at the back layer portion molding of the resin portion, before
The support plate is made of glass made of glass fiber on the resin part side in advance.
Mat is shall have been fixed. Here, a steel plate is generally used for the support plate because it is hard to deform because of cost considerations. However, the support plate is not limited to a steel plate as long as it does not easily deform, and may be, for example, a fine ceramic. Also, the glass mat was formed of glass fiber
It can be of a given shape or a commercially available glass
May be cut.

Therefore, according to the resin mold of the first aspect of the present invention, it is not necessary to grind the back layer portion of the resin portion before mounting the resin portion on the support plate as in the related art.
There is no need to perform the bonding operation between the resin portion and the support plate, and the resin portion does not deform during curing of the back layer portion. Further, after the back layer is cured, the support plate does not easily come off. In addition, support plate
Because the glass mat is fixed to the
After curing, the support plate is harder to peel off.

According to a second aspect of the present invention, there is provided a resin mold.
The support plate according to claim 1 has a plurality of holes through which a resin for a back layer portion of the resin portion can enter.

Therefore, according to the resin mold of the second aspect of the present invention, the resin in the back layer of the resin portion penetrates into the plurality of holes of the support plate, and after the back layer portion is cured by the anchor effect, the resin portion is formed. The support plate and the support plate are more closely adhered to each other, so that the support plate is less likely to peel off.

The resin mold according to the third aspect of the present invention comprises:
The expanded metal is provided on the resin portion side of the support plate according to claim 1 or 2. Here, the expanded metal is previously attached to the support plate by spot welding or the like.

According to the third aspect of the present invention, the resin penetrates into the expanded metal provided on the resin portion side of the support plate, and the back layer is more firmly joined to the support plate. I do.

According to the fourth aspect of the present invention, there is provided a resin mold.
The manufacturing apparatus according to any one of claims 1 to 3,
A manufacturing apparatus for manufacturing a resin mold of
The support plate integrated on the back of the mold is detachably mounted
The upper mold and the surface shape of the resin mold
A lower mold having a molding surface portion detachably mounted thereon,
Centering on the support rods located on the center of gravity of the upper die and on both sides
And a support base on which the upper die is rotatable.
It is.

Therefore, the resin molding according to the fourth aspect of the present invention.
According to the mold manufacturing equipment, it manufactures resin molding molds of predetermined shape
When performing, the space between the upper mold and the lower mold is filled with a synthetic resin.
Each time the shape of the product to be formed is changed, the product is formed.
Molding surface that determines the shape of the resin part of the resin mold to be molded
Can be replaced only and the parts other than the molding surface are discarded
Can be reused as many times as possible, reducing industrial waste
It goes. In addition, adjust the direction of the upper mold to mold the resin mold.
Easy to change or move according to work
Can be.

[0021]

[0022]

[0023]

[0024]

[0025]

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

As shown in FIG. 3C, the resin mold 1 of the present embodiment comprises a resin part 2 made of a synthetic resin material, which is a part for molding a product, and a steel plate supporting the resin part 2. And a support plate 3 composed 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. The resin molding die 1 is used as a molding die for building exterior wall materials.

In order to mold the resin molding die 1 of the present embodiment, a production die 10 is used.
And a lower mold 12. Here, the details of the manufacturing die 10 will be described. FIG. 4 is an exploded perspective view showing the upper mold 11, and shows a state in which the support plate 3 of the resin mold 1 is mounted on the upper mold 11. FIG. 5 is an exploded perspective view showing the lower mold 12, and shows a state in which a molding surface member 13 for determining the shape of the resin portion 2 of the resin 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 die 11 in a concave shape corresponding to the thickness of the support plate 3. Have been. The support plate 3 is provided with a plurality of bolt holes 3a for attaching the support plate 3 to the upper die 11, and is provided with a plurality of holes 3b through which the resin in the back layer 2c of the resin portion 2 enters. I have. The hole 3b of the support plate 3 is not necessarily provided exclusively, but an extra bolt hole 3a may be formed so that the bolt hole 3a also serves as the hole. Also, the support plate 3
A resin injection port 3c for injecting a molding resin into the back layer 2c of the resin part 2 is formed in the center of the resin part 2. The bolt hole 3 of the support plate 3 is also provided in the support plate mounting portion 11a of the upper die 11.
a and a bolt hole 11 at a position corresponding to the resin injection port 3c.
f and a resin injection port 11b are respectively formed. Upper mold 1
The support plate 3 has bolts 11f on the support plate mounting portion 11a.
And the bolt 11e through the bolt hole 3a. When the support plate 3 is mounted on the support plate mounting 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 The surface other than the mounting portion 11a is flush. The expanded metal may be previously attached to the resin portion 2 side of the support plate 3 by spot welding.

At the end of the upper mold 11, the resin for the back layer 2 c of the resin part 2 of the resin mold 1 is filled with a resin injection port 11.
b vacuum inlet 1 to facilitate injection when injecting from b
1c and a mold-reducing vacuum suction port 11d for strengthening the fastening with the lower mold 12 are provided. Vacuum suction port 11
c is a reduced-pressure 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.
a, and the vacuum suction port 11 d for mold clamping is evacuated to increase the degree of adhesion to the lower mold 12 when the upper mold 11 and the lower mold 12 are combined and clamped. It is drilled at the position where it can be made.

A support rod 11g is provided at both ends of the upper die 11 so that the upper die 11 can be supported by the support base 15, and a receiving portion 15a of the support base 15 has both ends of the upper die 11. The support bar 11g is supported, and the upper die 11 can be rotated about the support bar 11g as a fulcrum, if necessary.

On the other hand, as shown in FIG. 5, the lower mold 12 comprises a molding surface member 13 for forming the surface layer 2a of the resin portion 2 of the resin molding die 1, and a lower mold base 14. Yes,
A molding surface receiving portion 14c for mounting the molding surface member 13 is formed at the center of the lower mold base 14. Therefore,
In the lower mold 12, the molding surface member 13 can be appropriately replaced. On the surface of the molding surface member 13, a resin molding die 1 is provided.
A pattern or the like for determining the shape of the surface of the resin portion 2 is provided. Further, around the lower mold base 14, the back layer 2c is formed so as to facilitate the injection of the resin when the back layer 2c of the resin portion 2 is formed.
Is formed, and the reduced pressure suction groove 14a also communicates with the reduced pressure suction port 11c of the upper mold 11 when the upper mold 11 and the lower mold 12 are combined. Around the depressurized suction groove 14a, a seal member 14b is annularly interposed in parallel in order to increase the degree of close contact between the upper mold 11 and the lower mold 12, and the groove located between the seal members 14b is an upper mold. When the mold 11 is clamped between the lower mold 12 and the lower mold 12, the upper mold 11 is evacuated by the mold-reducing vacuum suction port 11 d. On the side surface of the lower mold base 14, a suspending member 14d made of an eyebolt or the like serving as a hook when the lower mold 12 is moved by a crane or the like is provided.

Next, the production mold 10 constructed as described above is used.
The procedure for molding the resin mold 1 will be described with reference to FIGS.

First, as shown in FIG.
The support plate 3 is mounted on the first support plate mounting portion 11a. The support plate 3 is bolted to the bolt hole 3e of the support plate 3 by a bolt 11e projecting from above the upper die 11 through the bolt hole 11f.
a. Further, a glass mat 2b made of glass fiber is screwed into a bolt hole 3a of the support plate 3 with bolts 11e or the like, and fixed to the surface of the support plate 3 corresponding to the resin portion 2 side.

On the other hand, as shown in FIG. 1B, 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 is formed with the surface layer portion 2a of the resin portion 2. Is laminated.

Subsequently, as shown in FIG. 2A, a glass mat 2b made of glass fiber or the like is placed on the surface layer 2a.
The upper die 11 to which the support plate 3 to which is fixed is attached is stacked on the lower die 12 and the die is clamped by the fastener 16 or the like. At this time, a vacuum is evacuated 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 section 2 is passed through a resin inlet 11b provided in the upper die 11 and a resin inlet 3c provided in the support plate 3.
The 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 portion 2c is evacuated through the reduced-pressure suction groove 14a formed around the lower mold 12 and the reduced-pressure suction port 11c provided in the upper mold 11. Thus, the resin spreads over the space to be the back layer portion 2c, and the back layer portion 2c of the resin portion 2 is formed. This resin has a surface layer 2a
And penetrates into the glass mat 2b. The back layer 2c
The resin filled for use enters the holes 3 b formed in the support plate 3. The resin for the back layer 2c is preliminarily mixed with glass fibers having a low coefficient of thermal expansion, such as glass fibers. 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 part 2 can be matched to the coefficient of thermal expansion of the support plate 3 as much as possible. Warpage can be prevented, and the support plate 3 and the resin portion 2 can be firmly adhered.

When the resin portion 2 is cured, FIG.
As shown in (1), the upper mold 11 is opened, and the resin mold 1 is released. In this state, as shown in FIG. 3B, unnecessary resin protrudes around the resin injection port 11b of the upper mold 11 and around the back layer 2c. , Removes unnecessary resin that protrudes. Thus, the resin mold 1 as shown in FIG. 3C is completed.

FIG. 6 is a perspective view showing the overall structure of a resin mold manufacturing apparatus according to an embodiment of the present invention. As shown in FIG. 6, a resin is injected into the resin injection port 11b of the upper mold 11 by an injection device 17. At this time, the pressure reducing device 1
8, the reduced pressure suction groove 1 formed around the lower mold 12
Vacuum is evacuated through the vacuum suction port 11c provided in the upper mold 4a and the upper mold 11. However, since excess resin is sucked together with air from the vacuum suction groove 14a, the decompression device 18 communicates with the vacuum suction groove 14a. Is provided with a resin trap 19 for storing excess resin.

As described above, the resin mold 1 of the present embodiment is
Is a molding die for building exterior wall material, and has a laminated structure including a surface layer portion 2a made of a synthetic resin material for molding the exterior wall surface of the building exterior wall material, a glass mat 2b as an intermediate layer portion, and a back layer portion 2c. And a 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 formed.

Therefore, the resin molding die 1 does not need to bond the support plate 3 after the resin portion 2 has hardened as in the prior art, so that the back layer portion 2c of the resin portion 2 does not need to be polished. Work steps can be omitted. The back layer 2c
The backing layer 2c and the supporting plate 3 are firmly adhered to each other because the supporting plate 3 is mounted before the hardening of the backing layer 2c. become. As a result, the resin molding die 1 can be manufactured very easily in a short time, is inexpensive, has low distortion and high quality accuracy.

In particular, in the resin mold 1 of the present embodiment,
Since a plurality of holes 3b into which the resin for the back layer 2c of the resin portion 2 can penetrate are formed in the support plate 3, the back layer 2c is formed by the anchor effect of the resin penetrating the holes 3b. Since the support plate 3 is firmly joined to the support plate 3, the support plate 3 is harder 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 the expanded metal is previously attached to the resin portion 2 side of the support plate 3 by spot welding, the resin enters the expanded metal, and the back layer portion 2 c
Therefore, the support plate 3 is not easily peeled off. In addition to the expanded metal, a net-like member into which the resin can easily enter may be used.

Further, since the glass mat 2b having a predetermined shape formed of glass fiber is fixed on the resin portion 2 side of the support plate 3 in advance, the support plate 3 is further peeled off even after the back layer portion 2c is hardened. Hateful. In the above description, the support plate 3
Although the glass mat 2b is previously fixed to the resin member 2, the glass mat 2b may be mounted on the surface layer 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 a surface shape of the resin molding die 1 is detachably mounted on a lower die 12 which is a production die 10 of a production apparatus for producing the resin molding die 1. Therefore, only the molding surface member 13 can be replaced. Therefore, each 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 molding die 1 for molding the product.
Since 4 and upper mold 11 can be reused as many times as they are,
It is extremely economical and can contribute to the production of inexpensive products, which leads to a reduction in industrial waste and is effective in protecting the global environment. Naturally, the lower mold base 14 and the molding surface member 13 may be integrally formed into the lower mold 12. However, as in this embodiment, the lower mold substrate 14 is formed on the molding surface member 1.
Needless to say, it is more economical to make the 3 detachable.

Here, the lower mold base 14 of the lower mold 12 is used.
Although the manufacturing die 10 in which the molding surface member 13 is mounted on the manufacturing die 10 is described, in the case of the manufacturing die 10 in which the lower die 12 and the upper die 11 are reversed, since the molding surface member 13 is mounted on the upper die 11,
In this case, too, it is of course applicable.

The upper die 11 of the production die 10 of the production apparatus is also used.
The upper die 11 is rotatable around support bars 11g located on both sides of the center line of the upper die 11. In the present embodiment, the upper mold 11 is turned in the opposite direction to the upper mold 1.
The support plate 3 is mounted on the support plate mounting portion 11a of the
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 as appropriate according to the work, so that the work efficiency is very high.

Although the resin molding die 1 can be produced by the production apparatus shown in FIG. 6, it is preferable to use the production apparatus shown in FIGS. 7 and 8 in order to produce the resin molding die 1 in large quantities. FIG. 7 is a perspective view showing an overall configuration of a resin mold manufacturing apparatus according to another embodiment of the present invention, and FIG. 8 is a view showing a molding line of the resin mold manufacturing apparatus according to another embodiment of the present invention. FIG.

As shown in FIG. 7, by injecting a large amount of resin into the manufacturing die 10 in a short time from the injection device 17 through a plurality of tubes, the resin molding die 1 can be manufactured in a short time. it can. In addition, as shown in FIGS. 7 and 8, the lower mold 12 of the production mold 10 is
The upper mold 11 is moved to the position of the support table 15 of the upper mold 11, and the upper mold 11 is placed on the lower mold 12 at the position of the support table 15, and the manufacturing tool 10 is set by tightening with the fastener 16. 1
From 7, the resin is injected into the production mold 10. And production mold 1
At the stage where the resin injected into the resin has hardened, the upper mold 11 is removed,
If the carriage 20 is shifted and the resin mold 1 is removed, the resin molds 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 provided with a resin portion 13a and a frame 13b around the resin portion 13a.
And the resin portion 13a and the frame 13b
May be supported by the lower mold base 14. Also in this case, even if the mold design is changed, the lower mold base 14 can be used in common, which is economical.

In the above description, the resin mold 1 as a mold for building exterior wall material and the manufacturing apparatus thereof have been described. However, the present invention can naturally be applied to molds other than building exterior wall material.

[0050]

As described above, in the resin mold according to the first aspect of the present invention, there is no need to grind the back layer of the resin portion before mounting the resin portion on the support plate as in the conventional case. With
Since there is no need to bond the resin part to the support plate, it can be manufactured extremely easily and in a short time, and the resin part does not deform during curing of the back layer part, and the support plate is easy after the back layer part is cured Since the resin mold does not peel off, a resin mold having low cost, small distortion and high quality accuracy can be obtained. In addition, the support plate
The smut is fixed, and it is supported after the back layer of the resin is cured.
The holding plate is more difficult to peel off, further improving reliability
I do.

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

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

An apparatus for manufacturing a resin mold according to claim 4 of the present invention.
The molding surface is detachably attached to the lower mold,
Each time the shape of the target product is changed, only the molding surface is replaced.
Without disposing of parts other than the molding surface
Is very economical because it can be reused
Not only contribute to production but also reduce industrial waste.
It is also effective in protecting the global environment. Also rotate the upper mold
By making it possible, the upper mold that molds the resin mold
The direction can be changed or moved as appropriate for the task.
The work efficiency is very good because it can be done easily.

[0054]

[0055]

[Brief description of the drawings]

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

FIG. 2 is a diagram of a resin mold according to an embodiment of the present invention.
FIG. 14 is a cross-sectional view showing a manufacturing step following that shown in FIG.

FIG. 3 shows a resin mold according to an embodiment of the present invention;
FIG. 14 is a cross-sectional view showing a manufacturing step following that shown in FIG.

FIG. 4 is an exploded perspective view showing an upper mold for manufacturing a resin mold according to one 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 manufacturing apparatus for a resin mold 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 an apparatus for manufacturing a resin mold 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 a manufacturing step following FIG. 9 of the conventional resin mold.

FIG. 11 is a cross-sectional view showing a manufacturing step following that of FIG. 10 for a conventional resin mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Resin molding die 2 Resin part 2a Surface part 2b Glass mat 2c Back layer part 3 Support plate 3a Bolt hole 3b Hole 3c Resin injection port 10 Production mold 11 Upper mold 11a Support plate mounting part 11b Resin injection port 11c Decompression suction port 11d Mold clamping vacuum suction port 11e Bolt 11f Bolt hole 11g Support rod 12 Lower mold 13 Molding surface member 14 Lower mold base 14a Reduced pressure suction groove 14b Seal member 14c Molding surface receiving portion 14d Suspension member 15 Support base 15a Receiving portion 16 Fastener 17 injection device 18 decompression device 19 resin trap

Claims (4)

(57) [Claims] 1. A mold construction for siding, and the resin portion of the laminated structure consisting of front Symbol synthetic resin material for the outer wall surface forming the building outer walls, a back layer portion molding of front Symbol resin portion Ri at Do and a support plate secured integrally to the back surface of the resin portion, the support plate, glass made of glass fiber in advance resin portion
Smut resin mold, characterized in that Rukoto been fixed. Wherein said support plate, a resin mold according to claim 1 in which the resin for the back layer portion of the front Symbol resin portion and having a plurality of holes possible intrusion. Wherein said support plate, a resin mold according to claim 1 or claim 2 expanded metal before Symbol resin portion side, characterized in that it is arranged. 4. The method according to claim 1, wherein:
A manufacturing apparatus for manufacturing the resin mold according to claim 1, wherein the support plate integrated with the back surface of the resin mold is detachable.
The upper mold that is attached to the mold and the molding surface that determines the surface shape of the resin mold are removable.
The lower die, which is mounted as possible , and the support rods located on both sides of the center line of the upper die.
A support base on which the upper die is rotatable;
And an apparatus for manufacturing a resin mold.