JP2000167840A - Molding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding device for easily replacing a material without labor and time when feeding the material to be fed into a molding machine such as an extrusion molding machine is replaced. SOLUTION: A molding device 1 is provided with a plurality of feed hoppers 20, 20A and 20B for storing respective materials A, B and C to be fed and molded by a molding machine 10 molding the materials to be fed such as a resin and the like and a sub-hopper 40 connected with at least one of a plurality of hoppers 20, 20A and 20B storing the material A to be fed which is fed from the feed hoppers 20, 20A and 20B and feeding the same into the molding machine 10. The sub-hopper 40 is of the volume smaller than those of the feed hoppers 20, 20A and 20B, and the materials A, B and C to be fed which are stored in respective feed hoppers 20, 20A and 20B can be molded by the molding machine 10 by replacing a feed hopper to be connected with the sub-hopper 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding apparatus, and more particularly, to a molding apparatus having a hopper.

[0002]

2. Description of the Related Art A molding machine such as an extrusion molding machine is generally provided with a hopper for storing a raw material (supplied raw material), and the raw material is supplied by the hopper.
As a molding machine provided with such a hopper, for example, there is an apparatus disclosed in Japanese Patent Application Laid-Open No. 61-5914.

The apparatus disclosed in this publication is provided with an extrusion molding machine connected via a supply pipe below a raw material supply hopper in which a granular main raw material is stored. And a measuring hopper supported by the load measuring device, and a plurality of sub-hoppers for storing granular auxiliary materials are provided near the center of the supply pipe.

In this apparatus, a main raw material sent from a raw material supply hopper and a colored secondary granular material in the form of pellets stored in a sub hopper are fed to a bobbin provided between a supply pipe and an extruder. And the mixture is supplied to an extruder to form a colored resin tube. And
The color change of the raw material for resin tube molding is performed by adjusting the input amount of the sub-raw materials having different colors of the plurality of sub-hoppers to the main raw material to be mixed, so that a desired color is obtained, This adjustment is made according to the amount of the main raw material in the weighing hopper.

[0005]

By the way, in the apparatus constructed as described above, the main raw material itself is not changed, and the colored raw material is mixed with the main raw material to form a tube which is a colored molded product. Is formed. Therefore, in this apparatus, when changing the main raw material stored in the raw material supply hopper, such as changing the color of the main raw material itself, if the stored main raw material does not run out, another type of main raw material is used. Cannot be used to form a molded article. That is, since another type of main raw material is formed using this raw material supply hopper, all the main raw materials to be exchanged must be removed in the raw material supply hopper. Usually, a raw material supply hopper that supplies raw materials to a molding machine such as an extrusion molding machine smoothly uses a considerably large one in order to reduce the number of times of manual supply. For this reason, it takes time to remove the changed main raw material in the raw material supply hopper, and it takes time and effort to remove the residue of the main raw material exchanged inside.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to replace a supply material supplied to a molding machine such as an extrusion molding machine without the need for labor and time to easily replace the molding material. It is to provide a device.

[0007]

According to the first aspect of the present invention, there is provided a molding apparatus having a molding machine for molding a supply material such as a resin as shown in FIG. A plurality of supply hoppers 20 and 2 for storing supply materials A, B and C formed by the molding machine 10, respectively.
0A, 20B and the plurality of supply hoppers 20, 20.
A, and a sub-hopper 40 connected to at least one of the supply hopper 20 and storing the supply material A supplied from the supply hopper 20 and supplying the material A to the molding machine 10.
0 is smaller in capacity than the supply hoppers 20, 20A and 20B.

As a molding machine, for example, a molding machine for mixing a cellulosic fine powder such as wood flour, a resin, and a pigment and extruding a mixture obtained by dissolving the mixed material, and a molding machine for ordinary resin molding are used. Examples include, but are not limited to, raw material powder of ceramics and raw material powder of sintered metal, a material for extruding a mixed material obtained by mixing at least one of these material powders and a resin, and a method for extruding mortar. Or the like. In addition, examples of the molding machine include an extrusion molding machine and an injection molding machine. Further, the supply hopper and the sub hopper may have any configuration, but the sub hopper has a smaller capacity than the supply hopper.

The supply hopper is, like a conventional hopper provided in a molding machine, enlarged in size to reduce manual supply. Therefore, in the case of manufacturing a product with a different supply material by one molding machine, the supply material is exchanged and the molding is performed by the molding machine, but the supply material is supplied to the inside of the molding machine and the molding machine for molding the supply material. The inside of the hopper must be cleaned so that there is no residue of the previous supply material. Residues must be removed by charging the material. Alternatively, it is necessary to extract the remaining supply material from the supply hopper, and the operation is troublesome.

In the molding apparatus 1 according to the first aspect, a plurality of supply hoppers 20, 20A, 20B for respectively storing supply materials A, B, C formed by the molding machine 10.
Is connected to at least one of the plurality of supply hoppers 20, 20A, and 20B.
A, B, and C, which are supplied from the supply hoppers 20, 20B, are stored and supplied to the molding machine 10.
A and 20B are provided with the sub hopper 40 having a smaller capacity than that of the auxiliary hopper 40. Therefore, when changing the supply material, it takes no time and effort to remove the residue of the changed supply material inside the sub hopper 40. Further, the amount of the next supply material (B or C) to be supplied when removing the residue of the previous supply material A can be reduced, and the molding cost can be reduced.

Further, while the supply material in the sub hopper 40 is supplied to the molding machine 10, that is, the molding machine 1
0, the supply material A is changed to another supply hopper (20A or 20B) by connecting another supply hopper (20A or 20B) to the sub hopper 40 by changing the supply hopper 20. Supply materials (B and C) stored in
Can be replaced.

Therefore, it is not necessary to change the supply material which is a raw material to be supplied to the molding machine 10, and it is possible to easily replace the supply material, and to form another supply material with the molding machine in a short time. Can be.

According to a second aspect of the present invention, in the molding apparatus of the first aspect, for example, as shown in FIG. 1, a connection pipe 30 for connecting the supply hopper 20 and the sub hopper 40 is provided.
And a feeding means 29 for feeding the supply material from the supply hopper to the sub hopper 40 via the connection pipe 30.

According to the molding apparatus of the second aspect, the same effect as the invention of the first aspect can be obtained, and the supply material A of the supply hopper 20 is supplied to the sub hopper 4.
0 through the connecting pipe 30 by the pumping means 29, so that no matter how and where the supply hopper 20 is arranged, the supply material A in the supply hopper 20 is supplied to the sub hopper 40. It is sent to the molding machine 10 via the sub hopper 40.

Therefore, unlike the conventional hopper provided in the molding machine, in which the supply material is supplied to the molding machine by its own weight, there is no need to dispose the supply hoppers 20, 20A, 20B above the molding machine. It can be placed in any place, and in the working space where the molding device is placed, it can be placed in the right place for easy work,
The work space can be used effectively. In particular, if the connection pipe 30 is formed as having flexibility and the respective supply hoppers 20, 20A, 20B are configured to be movable, the arrangement of the supply hoppers 20, 20A, 20B can be appropriately changed. .

The third aspect of the present invention is the first or second aspect.
In the molding apparatus described, for example, as shown in FIG.
The supply hoppers 20, 20A and 20B have heating means 28 and 2 for heating them to dry the supply materials A, B and C therein.
8, 28 are provided.

In the molding apparatus 1 according to the third aspect, the same effect as that of the invention according to the first or second aspect can be obtained, and the supply hoppers 20, 20A, 20B can be obtained.
Is provided with heating means 28, 28, 28 for heating and drying the internal supply materials A, B, C, so that the supply materials A, B, C in the supply hoppers 20, 20A, 20B are dried. As a result, the water is blown off, and they do not foam when they are formed in the molding machine 10.
Therefore, a nest is not formed in the product itself formed by the molding machine 10, and the product manufactured by the molding apparatus 1 can be made of high quality.

According to a fourth aspect of the present invention, in the molding apparatus 1 according to any one of the first to third aspects, for example, as shown in FIG. Peep window 45 visible from outside of sub hopper 40
Is provided.

In the molding apparatus 1 according to the fourth aspect, the same effect as the invention according to any one of the first to third aspects can be obtained, and the view window 45 is provided in the sub hopper 40. Is provided, so that the viewing window 45
By visually observing the state inside the sub hopper 40 from
The supply status of the supply material from the sub hopper 40 to the molding machine 10 can be grasped. Thereby, for example, when the supply material is changed to another supply material, it is possible to know how much another supply material is molded and the product is manufactured later.

According to a fifth aspect of the present invention, in the molding apparatus according to any one of the first to fourth aspects, for example, as shown in FIG. 1, the molding machine 10 is an extrusion molding machine 10.

When a product having a different color is manufactured by using the extruder 10, only the material supplied to the extruder 10 is changed using the same die. At this time, the supply material having a different color from the previous supply material is continuously supplied to the supply member that has been supplied first, and the subsequent supply material is extruded to form a residual material in the hopper and the extrusion molding machine. The previously supplied material is discharged to the outside, and the inside of the hopper and the extruder are cleaned so that the next supply member is formed. That is, the extruder 10
In order to form supply materials having different colors, it is preferable that the supply material is supplied continuously to the preceding supply material, and it is desirable that the supply material is always operated.

In the molding apparatus according to the fifth aspect, the same effects as those of the invention according to any one of the first to fourth aspects can be obtained, and since the molding machine is the extrusion molding machine 10, In the case where a different type of product is manufactured by changing only the supply material without changing the above, it is possible to perform the operation by extruding the previous supply material and continuously supplying the subsequent supply material while the extruder 10 is operated. The smaller the remaining amount of the supply material remaining in the sub hopper, the more quickly the supply material of another color can be molded to manufacture a product.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a molding apparatus according to the present invention will be described below with reference to FIG. First, FIG. 1 is a schematic configuration diagram of an extrusion molding apparatus showing an embodiment of a molding apparatus according to the present invention.

As shown in FIG. 1, the extrusion molding apparatus (molding apparatus) 1 includes an extrusion molding machine (molding machine) 10 for molding the supplied material, and the extrusion molding machine 1
A plurality of supply hoppers 20, 20A, 20B for respectively storing the supply materials A, B, C supplied to 0, and connection pipes 30 (connected only to the supply hopper 20 in the figure) to these supply hoppers 20, 20A, 20B. And an auxiliary hopper 40 that supplies the supply materials A, B, and C from the supply hoppers 20, 20A, and 20B to the extrusion molding machine 10.

The material to be molded by the molding apparatus 1 may be any material, but a filler, a reinforcing material, a coloring material, a stabilizer and the like are mainly added to the resin according to the application. Compounds. The compound may be in the form of pellets or powder. Here, cellulosic fine powder consisting of wood flour and the like,
A mixed material obtained by mixing a resin and a pigment is used, and the supply materials A, B, and C stored in the supply hoppers 20, 20A, and 20B, respectively, are of different colors, and are formed by the extruder 10. It is configured to be selectable depending on the product.

The extruder 10 is similar to a known extruder, and includes a cylinder 11 and a screw 1.
2 is provided in the main body 13, and is supplied from a sub-hopper 40 connected through a supply port 14 formed in a part of the cylinder 11 on the upper part of the extruder 10. Is extruded. The extruder 10 is configured to extrude a material obtained by dissolving a mixed material obtained by mixing a cellulose-based fine powder composed of the above-mentioned wood powder, a resin, and a pigment. A die mounting head portion 17 is provided at the tip, and a supply material is extruded and molded into a mold mounted on the mounting head portion 17 to manufacture a product. The driving of the extrusion molding machine 10 is controlled by a control device (not shown).

A plurality of supply hoppers 20, 20 are provided.
A and 20B have the same configuration except that the types of supply materials A, B and C stored therein are different. Therefore, here, the configuration of the supply hopper 20 will be mainly described, and the other supply hoppers 20B and 20C will be described. The description is omitted using the same name.

The supply hopper 20 has a cylindrical main body 22 having a narrowed lower part.
The supply material A is sucked through the tube 61 from the storage box 60A (60) in which the supply material A is stored, and the main unit 2 is sucked.
A suction device 24 for taking in the inside 2 is provided. In the drawing, a storage box in which the supply material B stored by the supply hopper 20A is stored is indicated by 60B, and a storage box in which the supply material C stored by the supply hopper 20B is stored is indicated by 60C.
These storage boxes 60A, 60B, and 60C have the same configuration. The supply hoppers 20A and 20B are also provided with suction devices 24, respectively, so that the supply materials B and C are taken into the respective supply hoppers 20A and 20B. Also, the lower hopper lower part 2 which is narrowed
One end 31 of a connection pipe 30 is connected to a tip 26 having a lower opening 25 opened at the tip of 2a.

One end 31 of the connection pipe 30 is detachably attached to the supply hopper 20 via the tip 26 of the supply hopper 20, and is detached from the other supply hoppers 20A and 20B. Lower openings 25A, 25
B can be freely attached to each of the distal end portions 26A and 26B.

Further, the supply hopper 20 is provided with a hopper dryer (heating means) 28 for heating the inside and drying the supply material A stored in the inside. For example, the water of the supply material A inside the supply hopper 20 is dried at 80 ° C. to 90 ° C. for 2 hours to be dried. This configuration is designed so that the supply material A does not locally stagnate in the supply hopper 20, and prevents the supply material A from being thermally degraded in the supply hopper 20 and adversely affecting the product.

As the supply material A inside is heated by the hopper dryer 28 in this manner, when the supply material A is formed, nests that occur in the product due to volatilization are less likely to be formed. In particular, in the present embodiment, it can be said that the supply material is more effective because the supply material contains wood flour that is likely to contain moisture.

The supply hopper 20 further includes a connection pipe 30.
The supply material A in the connection pipe 30 is supplied from the supply hopper 20 side.
An air compressor (pressure feeding means) 29 for feeding pressure to the side of the sub hopper 40 to which the other end 32 is connected is provided. The supply hopper 20 is controlled by the air compressor 29.
The supply material A inside is sent to the sub hopper 40 via the connection pipe 30.

As described above, the supply material A in the supply hopper 20 is sent to the sub hopper 40 by the air compressor (pressure feeding means) 29, so that the lower opening 25 of the supply hopper 20 is located below the sub hopper 40. However, the supply material A of the supply hopper 20 is sent to the sub hopper 40, and the supply hopper 20 does not always need to be disposed above the sub hopper 40, and the lower opening 25 of the supply hopper 20
May be located below. That is, the supply hopper 20
May be arranged in any manner and anywhere, and the range in which they are arranged is widened and can be arranged in a suitable place. In addition, the supply hoppers 20A and 20B can be similarly arranged at a suitable place.

Further, since the supply material A in the connection pipe 30 is pressure-fed by the air compressor 29, the supply material A is not clogged in the connection pipe 30 and the residue in the connection pipe 30 can be eliminated.

The supply hopper 20 is configured as described above, and similarly, each of the supply hoppers 20A and 20B is also configured. The supply hoppers 20A and 20B are connected to the sub hopper 40 by the other end 32 being connected to one end 31 of the connection pipe 30 connected to the sub hopper 40.
Supply materials B and C of connected supply hoppers 20A and 20B
Can be supplied. In the figure, the supply hopper 20 is connected to the connection pipe 30.

The auxiliary hopper 40 is provided in the extruder 10, and is configured to smoothly supply the supply material A from the supply hopper 20 to the cylinder 11 and the screw portion 12 inside the extruder 10. Is what it is. More specifically, the sub hopper 40 is connected to the other end 32 of the connection pipe 30 at the upper part and is narrowed downward.
And a lower body 44 provided at the lower part of the main body 42 and having an opening formed at the lower part connected to the supply port 14 of the extrusion molding machine 10.

The main body lower component 44 is formed in a cylindrical shape having a narrowed lower portion, and is configured to communicate with the inside of the main body 42 through an opening at the upper portion.
Viewing window 45 through which the inside of the lower body 44 can be viewed.
Is provided. By visually recognizing the inside of the main body lower structure 44 from the view window 45, the supply material A (the supply hopper 20) to the extrusion molding machine 10 from the sub-hopper 40
When A and 20B are connected to the connection pipe 30, the supply status of the supply material B and the supply material C) can be visually recognized.

The sub hopper 40 (particularly, the main body 4)
2) is configured so that the capacity is smaller than that of the supply hoppers 20, 20A, 20B.
The supply materials A, B, and C are replenished from B. Here, the supply hoppers 20, 20A, 20B
Like a hopper attached to a conventional extruder, a large-capacity hopper is used to minimize manual supply. For this reason, the extruder 1
For example, when the supply material A extruded by 0 is changed to the supply material B to produce a product having a different color, the sub hopper 40 provided in the extrusion molding machine 10 has a capacity larger than that of the supply hoppers 20, 20A, and 20B. Is small, it does not take much time to remove the residue of the previously used supply material A in the sub hopper 40.

The sub hopper 40 itself may be configured to be removable. Even when the hoppers are detachable, the supply hoppers 20 and 2 have the same size as the conventional hopper.
Since the capacity is smaller than 0A and 20B, it can be easily replaced.

Next, the operation of the thus-configured molding apparatus will be described. That is, the storage boxes 60A, 6A
The supply materials A, B, and C are sucked from the supply hoppers 20, 20A, and 20B, and stored in the supply hoppers 20, 20A, and 20B.
B and C are sent to the sub hopper 40 via the connection pipe 30. Then, the supply materials A, B,
C is supplied to the extruder 10, and is formed as a product via a die attached to the tip of the extruder 10.

As described above, the supply hoppers 20, 20A,
When extruder 10 for forming supply materials A, B, and C stored in 20B is used to form another product by changing the supply material, for example, one end 31 of connection pipe 30 is connected to supply hopper 20 from supply hopper 20. Remove and attach to supply hopper 20A. That is, the supply material A is changed to the supply material B by switching from the supply hopper 20 to the supply hopper 20A.

During the exchange from the supply hopper 20 to the supply hopper 20A, the supply material A stored in the sub hopper 40 is supplied to the extruder 10, so that the supply material to be used can be easily changed. Here, a change from the supply material A having a different color to the supply material B can be performed.

Further, since the capacity of the sub hopper 40 is smaller than the capacity of the supply hopper 20, the supply material A in the supply hopper 20 is exhausted and the supply hopper 20 is replaced with another supply material B. The time until the product is formed can be reduced.

Normally, when molding products of different colors using the same mold, extrusion molding is carried out without stopping the operation of the extrusion molding apparatus due to the nature of extruding the supplied raw material into the mold. . Therefore, when a plurality of products with different raw materials are formed by one extruder, the next raw material is supplied to the extruder continuously from the previous raw material and supplied to the extruder. Clean and mold so that all the raw material remaining in the hopper is gone.

According to the extrusion molding apparatus 1 of the present embodiment, the hopper provided in the extrusion molding machine 10 is the sub hopper 40, and the sub hopper 40 has a smaller capacity than the supply hopper 20. The smaller the supply amount of the remaining supply material A, the smaller the amount of the next supply material B supplied to eliminate the residue of the supply material A in the sub hopper 40. The cost can be reduced, and a plurality of products having different colors can be easily formed using raw materials (supply materials) having different colors without stopping the operation of the extrusion molding machine 10.

The feed materials A, B, and C used in the above-described molding apparatus 1 are mixed materials obtained by mixing a cellulose-based fine powder such as wood flour, a resin, and a pigment. In the molding apparatus 1 of the embodiment, it is possible to produce a wooden product having an excellent design and a good touch.

In this case, the supply material A is replaced with the supply material B.
However, the present invention is not limited to this, and it is a matter of course that the product may be manufactured by changing the supply material A to the supply material C. The same effect can be obtained even if the supply material formed by the extruder 10 is a mixture of the supply materials A and B, and the mixture is changed to the supply material C. For example, there is a case where a marble-shaped molding that is a mixture of two colors is performed.

In the above embodiment, the molding machine is an extrusion molding machine. However, the present invention is not limited to the molding machine provided with a hopper. It may be.

In the above embodiment, the air compressor 29 serving as the pressure feeding means is provided with the supply hoppers 20, 20A,
Although described as being provided in each of the supply hoppers 20 and 2B, the present invention is not limited to this, and may be provided in the connection pipe 30 or provided in the sub hopper 40.
It may be configured to be fed from 0A and 20B to the sub hopper 40 by pressure. Furthermore, although three supply hoppers are used, the present invention is not limited to this, and the extrusion molding device (molding device) 1 may include two or more supply hoppers. Also,
If the casters are attached to the supply hoppers 20, 20A, and 20B so as to be movable, and the connection pipe 30 has flexibility and elasticity, the supply hoppers 20, 20A, and 20B can be arranged at arbitrary locations.

[0050]

As described above, according to the molding apparatus according to the first aspect of the present invention, a plurality of supply hoppers for respectively storing the supply materials formed by the molding machine, and at least one of the plurality of supply hoppers. Connected to one another, supplies the supply material supplied from the supply hopper to the molding machine, and supplies the molding machine with the auxiliary hopper having a smaller capacity than the supply hopper. Eliminating time and effort to remove the residue of the changed feed material inside the hopper and reducing the amount of the next feed material that is input when removing the residue of the previous feed material Thus, the molding cost can be reduced.

Further, while the supply material in the sub-hopper is being supplied to the molding machine, that is, while the molding machine is operating, the supply hopper is changed and another supply hopper is connected to the sub-hopper. The supply material can be exchanged for a supply material stored in another supply hopper. Therefore, it is not necessary to change the supply material as the raw material to be supplied to the molding machine, and it is possible to easily replace the supply material, and the other supply material can be molded by the molding machine in a short time.

According to the molding apparatus of the second aspect, the same effect as that of the first aspect can be obtained, and the supply material of the supply hopper is connected to the sub hopper via a connection pipe. , Because it is pressure-fed by the pressure-feeding means, no matter how and where the supply hopper is placed,
Since the supply material in the supply hopper is sent to the sub hopper and supplied to the molding machine via the sub hopper, the supply material is supplied to the molding machine by its own weight as in a conventional hopper provided in the molding machine. Unlike the ones, the supply hopper does not need to be arranged at the top of the molding machine, and may be arranged in any way and in the work space where the molding apparatus is arranged so that it is easy to work. And the work space can be effectively used.

According to the third aspect of the present invention, the same effects as those of the first or second aspect can be obtained, and the supply hopper is heated to supply the internal material. Since the heating means for drying is provided, the supply material in the supply hopper is dried and the water is blown off, and these are not foamed when they are molded in the molding machine. A nest is not formed in the product itself to be molded, and the product manufactured by the molding apparatus 1 can be of high quality.

According to the molding apparatus according to the fourth aspect of the invention, the same effects as those of the first to third aspects of the invention can be obtained, and the view window portion is provided on the sub hopper. Since it is provided, by visually observing the inside of the sub hopper from the view window, it is possible to grasp the supply state of the supply material from the sub hopper to the molding machine. For example, when the supply material is changed, it is possible to know how long another supply material is formed and the product is manufactured.

According to the molding apparatus according to the fifth aspect of the invention, the same effects as those of the first to fourth aspects can be obtained, and the molding machine is an extrusion molding machine. When manufacturing different types of products by changing only the supply material without changing the mold, it is possible to perform the following supply material continuously to the previous supply material while the extruder is operated. The smaller the remaining amount of the supply material remaining in the sub hopper, the more quickly the supply material of another color can be molded to manufacture a product.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an extrusion molding apparatus showing an embodiment of a molding apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Extrusion molding device (molding device) 10 Extrusion molding machine (molding machine) 20, 20A, 20B Supply hopper 28 Hopper dryer (heating means) 29 Air compressor (pressure feeding means) 30 Connection pipe 40 Secondary hopper 45 Viewing window

Claims (5)

[Claims] 1. A molding apparatus having a molding machine for molding a supply material such as a resin, comprising: a plurality of supply hoppers each storing a supply material formed by the molding machine; and at least one of the plurality of supply hoppers A molding apparatus, comprising: a sub-hopper connected to one of the supply hoppers and storing a supply material supplied from the supply hopper and supplying the material to the molding machine; and the sub-hopper has a smaller capacity than the supply hopper. 2. The molding apparatus according to claim 1, wherein: a connecting pipe connecting the supply hopper and the sub hopper; and a pressure feeding for feeding the supply material from the supply hopper to the sub hopper via the connecting pipe. And a means for providing a molding device. 3. The molding apparatus according to claim 1, wherein the supply hopper is provided with heating means for heating and drying an internal supply material. 4. The molding apparatus according to claim 1, wherein the sub hopper is provided with a viewing window through which the inside of the sub hopper can be visually recognized from outside the sub hopper. And molding equipment. 5. The molding apparatus according to claim 1, wherein the molding machine is an extrusion molding machine.