JPS6036103A - Molding device for molding wood - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention relates to a supply plant for synthetic Japanese cedar boards using wood flour as the main molding material, and particularly to a molding plan 1 that is adapted to the characteristics of mixed wood flour, which is poorly compatible with resin molding. It is.

Therefore, when molding a resin material that contains a large amount of different materials, it is important to clearly recognize the molding characteristics of the resin itself as well as the effects of the mixed materials on the molding surface. It is especially important to selectively use molding methods that are suitable for immediate use. The problem with the mixing of different materials is that the mixed materials, such as wood powder, have a lot of frictional resistance when flowing, and are not compatible with resin materials. This is particularly problematic when a large amount of this occurs inside the machine, and special ingenuity is required in the molding method.

The present invention combines the advantages of wood materials and composite materials and resin materials, in order to effectively eliminate the disadvantages of wood molded products and synthetic resin molded products in recent years, and to meet the strong demand for new materials. This is an attempt to provide a synthetic board molded product with high utility value using low-floor CONUT.

In particular, in the present invention, various processes are applied to the wood flour, which is a different material incorporated into the resin material, so that the characteristics of the mixed wood flour are adjusted under certain conditions. In this embodiment, the spreading operation and the cooling molding operation are carried out simultaneously, and a composite board containing wood flour, which is a different material, is produced in four inkstones.

In addition, in the device according to the present invention, with the intention of creating a completely mixed state of wood flour and vinyl chloride resin, which are different materials,
In particular, a pressurized kneader was prepared to ensure sufficient kneading of the material and to improve molding properties.As shown in Figure 5, the material was extruded into a thick pipe shape using a conventional extrusion device. The extrusion of the dough into a thick tube shape in this way is intended to reduce the frictional resistance during extrusion as much as possible, and to extrude the resin smoothly and quickly.

Particularly, the device according to the present invention is capable of widening the width of the special tube-shaped extruded material by splitting it open, rolling it out, and forming it into a mold, thereby providing a thin molded plate material. This is a new aspect of forming thin plate materials containing a large amount of different materials.

The molding apparatus according to the present invention has the following characteristics: (1) In order to achieve an appropriate effect, the molding apparatus according to the present invention has a particle size of 80 to 300 mm, a moisture content of 1.2 to 300 mm, and
5% wood flour is mixed into a thermosetting resin material at a ratio of 30 to 70%, a stabilizer is added to this, and the mixture is sequentially supplied from a blender to a pressure kneader. A process of kneading, and a twin taper screw placed at the bottom of the hombar to which this kneaded dough is sequentially fed, so that the supplied kneaded dough is forced into an extruder, and a pipe is heated and extruded in the extruder. Cut the shaped dough in the extrusion direction to form a sheet-shaped extruded doughJ
- a step of heating and stretching the extruded dough; 4. A step of transferring the heated and stretched formed dough to a hot roll device, heat rolling and stretching it, and a step of heating and stretching the extruded dough.
The process of appropriately cutting the fabric in the transfer direction, guiding the transferred fabric between cooling rolls until cooling is achieved, and the process of transferring the fabric using a cutting device orthogonal to the direction of transfer of the transfer fabric. Cutting to size - [It is placed at a point that is different from the distance.

Further, in the present invention, the following basic embodiments accompanying the gist of the configuration and considerable changes in construction 1 accompanying these embodiments are planned.

Hereinafter, a typical east side of the molded wood molding plant according to the present invention will be explained with reference to the attached drawing. It is made into a fine powder with a particle size of 80 to 300 mm. The conditions for wood flour a are specified based on the following several requirements.

One of the requirements is to make the wood flour a into a fine powder, and to extremely reduce the moisture content inside it by heating and drying, so that the wood acid gas contained therein can be effectively volatilized. During subsequent molding and heating, new wood acid gas is generated from the mixed wood flour.

Another reason is that there is no risk of generating water vapor, and wear and tear inside the molding machine cylinder, as well as scratches on the surface of the molded product, can be effectively prevented.

It also derives from the fact that by creating such an extremely dry condition, further gasification of wood acid was prevented, and there was no room for acetic acid gas to be generated during subsequent molding. .

Furthermore, another request is to improve the compatibility between wood powder and resin material.
The purpose is to provide molded products with a high quality molding chart of ``1''.

In addition, other requirements stem from the need to reduce the frictional resistance of wood flour during extrusion to the greatest extent possible, to prevent damage to the molding machine itself, and to provide molded products with less surface roughness. .

With the intention of further improving the properties of wood flour A, a urea-based resin adhesive is added to materials such as wood chips, which is heated and cured, and then crushed into 80 to 300 pieces and pulverized. This was planned separately, and in the method of molding the wood powder d, the wood in the wood powder a' is cured by sufficient heat, especially while being neutralized with a urea-based resin adhesive. The acid is rapidly removed by neutralization and volatilization, and a hardened adhesive surface is provided around the wood powder.

This method effectively prevents the water content in the wood flour from increasing further, and also improves the sliding properties of the wood flour A' and extremely reduces the frictional resistance during extrusion.

Mix wood flour a and a' in a proportion of 30 to 70% with respect to thermoplastic resin material, especially vinyl chloride resin C, add a stabilizer, and pour it into Brengu (1), then shoot into shooter (2).
It is guided to the pressurized knee goo (3) through the.

Therefore, this Nigu (3) is a two-bladed blade (3)
a, (3) a is installed with an opposing shaft 2, and this is pressurized by a pressurizing lid (3) b to force complete kneading of the official dough, and after a certain operation by a timer cent. The kneaded dough m was thrown into the hopper (4).

Next, the extrusion device heats the cylinder (8) of a straight single-screw (5) in a conventional extruder, and the dough m is passed through a strainer (7) into a tie (
8) and spread it out into a flat sheet using a cutter (8) provided in front of this goo (8).

It should be noted that the kneaded dough m is difficult to be smoothly fed from the hopper (4) into the molding machine cylinder (6) due to the heating and kneading process, and in particular, there is a Taber twin screw (10) in the lower part of this hopper (4). Prepare (10) and knead raw J4
This regulation regulates the forced pumping of m.

Furthermore, since the frictional resistance is particularly large when extruding a resin containing a large amount of wood flour a and a', which are different kinds of wood, the dough m is extruded into a thick tube shape, with the intention of making the molding as smooth as possible. There is our a.

The sheet fabric 1 thus extruded is heated by a hot air heating device (11
), the dough 1 is heated and stretched, and then transferred between heat rolls (12) and (+2), the dough is further heated and stretched until it reaches a predetermined thickness. - After uniformizing the thickness of the sheet fabric 1 according to the purpose, attach a film (14) to the sheet fabric 1 using a laminating device (13).

Fusing and then sheet raw tI! ! After cutting and aligning the edges of both sides of the molded plate with a slitter (15) to obtain the desired width and thickness of the molded plate, it is cooled and molded as necessary using a cooling roll (16), and guided to the conveyor (17). 7, the core part was sufficiently cooled.

The thus formed sheet material 1 is taken and cut into predetermined dimensions using a sizing cutter device (1B) to complete the production of a "C" molded plate.

Furthermore, (19) is! , (20J indicates the dust collection duct, and (21) indicates the collecting box).

The molded wood molding apparatus according to the present invention is expected to achieve the above-mentioned durability due to the characteristic structure described below.

In particular, when forming a dough m containing a large amount of wood flour a, a', a device for sufficiently kneading the dough m.

Prepare wood flours a and a' that meet certain conditions, set the torque at a low level during extrusion, and then heat and expand them to form a thin, yet large amount of wood flour. We were able to smoothly mass-produce and provide 11 pieces of bent molded plates.

It is almost impossible to directly mold a molded plate containing a large amount of wood flour a, a' using an extruder because of the frictional resistance during extrusion. Furthermore, it is practically impossible to produce such a plate by injection molding.

The apparatus according to the present invention extrudes a thick tube-shaped dough m' within the range of use of an extruder,
This is sequentially expanded to obtain a molded plate with a predetermined circle of 1 zo, which eliminates the need to stop the molding line unlike press molding, and promises mass production of thin molded plates through continuous extrusion molding. It is something.

Thus, the so-called 3x6 board, 3x8 board with a thickness of 0.5 to 5 mm
This makes it possible to provide low-profile, large-sized composite wood boards called boards.

[Brief explanation of drawings]

Figure +1 is a side view of the main parts of the molding apparatus according to the present invention, Figures 2A-D are cross-sectional views of the main parts showing the operation of the Neag part, Figure 3 is a plan view of the extruder part, and Figure 4 is a wooden Powder judgment end view,
FIG. 5 is an enlarged sectional view of the molded plate. In addition, in the figure (1)...Frengu, (2)...Shoogu, (3)...Nieta, (4)...Homper, (
5)...Screw, (6)...Cylinder, (?
)...Sul-na, (8)...Tai, (8)...
Kanku, (10)...-4 Screw, (11)
... Heating device, (12) ... Heat roll, (+3)
... Laminating device, (14) ... Noilno 1, (+
5)... pickpocket, tar, (+8)... cooling roll, (
17)...con hair, (18)...fixing cutter device, (19)...fixing j position, (20)...tojintaku 1-(2+)...accumulating popx This is what is shown. 'J', j, il Applicant Sada Nishihori, Grand Attorney, I1゛Ri I- Kuwa +1iI? ,○ - Hatchet complete -? m regular book (spontaneous) i111J Japanese♂δ year! Month 711 Special, X1 Agency Director Kazuo Okibe? Name of the invention: Molding device for molded wood 3 Relationship with the 111 amendments Patent G1 Applicant address: 1-1-9-206, Tokyo 1-1-9-206 for stationary molded products for parts Name: Tetsuya Nishibori 4 Agent: 101-03 ( 886) 3232-3
Contents of 2356 Amendment The specification is corrected as shown in the attached amended specification. Edited by Akira M. Name of the invention Molding device for molded wood 2! Ijf's claimed range (13 particle size is 80-300m, and the water content is 1
．． 2 to 556 wood flour is mixed with 30 to 70% aged 1 cup into a thermoplastic resin material, a stabilizer is added to this, the mixture is sequentially supplied to a kneading device, and the mixture is pressurized in the kneading device. About 71 kneading. A twin taper screw is arranged at the bottom of the hombar to which the kneaded dough is sequentially fed, and the kneaded dough is forced into the extruder, and the extruder extrudes the pipe-shaped dough which is heated and extruded. 2 steps of cutting the extruded dough in the direction and forming the extruded dough into a plate shape, heating the extruded dough, and transferring the heated formed dough to a hot roll device i'J: 1fil to suppress heating. ``Then, adjust the shaped dough to be transferred in the appropriate direction.''
A step of canting, a step of guiding the transferred dough between ring roll devices and cooling the mold, and a step of cutting the transferred dough to a fixed size using a sizing cutting device oriented in a direction perpendicular to the direction of transfer of the transferred dough. A molding device for molded wood characterized by the following steps: (2) The method for molding a molded wood according to claim 1, characterized in that the surface of the molded dough is covered and laminated with a suitable resin film in suppressing the heating of the transferred molded dough. 3. Detailed Description of the Invention The present invention relates to a supply plant for synthetic board materials using wood flour as the main molding material, and particularly to a molding plant adapted to the characteristics of mixed water powder, which is weakly compatible with resin molding. On the other hand, when molding a resin material that contains a large amount of different materials, it is necessary to clearly recognize the molding characteristics of the resin itself as well as the effects of the mixed materials during 1 & molding, and to It is particularly important to selectively use suitable molding methods. The problem of contamination of different materials is
This is a particular problem when this mixed foreign material, such as wood powder, has a lot of frictional resistance during flow, is not compatible with the resin material, and also generates a large amount of moisture or wood vinegar gas in the molding machine. The molding method was highly praised. The present invention effectively eliminates the disadvantages of wood molded products and synthetic resin molded products in recent years, and in response to the strong demand for new materials, the present invention combines the advantages of wood materials and synthetic resin materials. This is an attempt to provide a composite plate molded product with low cost and high utility value. In particular, in the present invention, various weights are applied to the wood powder, which is a dissimilar material rubbed into the resin material, and the characteristics of the mixed wood powder are made to be uniform under certain conditions. In this method, the heating rolling and pressing operation and the cooling molding operation are carried out simultaneously, and the composite board containing wood flour, which is a different material, is mass-produced. In the device of the present invention, with the intention of creating a complete mixture of wood flour and vinyl chloride resin, which are dissimilar materials, we prepared especially pressurized kneading devices such as niegoo and henharry, and trained human resources. The material is extruded into a thick-walled pipe using a conventional extrusion device in order to ensure sufficient kneading and to improve molding properties. The extrusion of the dough into a thick tube shape was carried out with the intention of reducing the frictional resistance during extrusion as much as possible to achieve smooth and quick extrusion molding of the resin. In particular, the device according to the present invention splits open the unique tube-shaped extruded fabric and spreads it under pressure. By forming a mold, it is possible to widen the width and provide a thin molded plate material that can be used, and it opens up a new dimension to the forming of thin plate materials in which a large amount of different materials are mixed. The molding apparatus according to the present invention has a particle size of 80 to 300 mesh and a water content of 1.2 to 1.2 to 300 mesh, in order to achieve various effects on the characteristic durability described in Section 1-. 5
% wood flour is mixed into a thermoplastic resin material at a ratio of 30 to 70%, a stabilizer is added to this, and the mixture is sequentially supplied to a kneading device, where pressure kneading is performed. The kneaded dough is sequentially supplied to the hopper 'F:, which is equipped with a twin taper screw to forcefully feed the kneaded dough into the extruder, and a pipe through which the kneaded dough is heated and extruded in the extruder. A process of cutting a shaped dough in the extrusion direction to form a sheet-like extruded dough, a step of heating this extruded dough, and a step of transferring the heated molded dough between hot roll devices and heating and pressing it. - The step of appropriately canting the transferred forming dough in the direction of transfer, and the step of guiding the transferred dough between cooling roll devices to cool the mold and the direction of transfer of the transferred dough. It is placed at a point where the transferred fabric is cut to size by a size cutting device directed in a direction perpendicular to . Further, in the present invention, the following specific embodiments that follow the gist of the above configuration and considerable design changes accompanying these embodiments are planned. Hereinafter, a typical example of a molded wood molding plant according to the present invention will be explained with reference to the attached drawings. It is made into a fine powder with a particle size of 80 to 300 mesh. The conditions for wood flour a are specified based on the following several requirements. One of the requirements is to make the wood flour a into a fine powder, and to extremely reduce the moisture content inside it by heating and drying, so that the wood acid gas contained therein can be effectively volatilized. This method is derived from the fact that it eliminates the possibility of newly generating wood acid gas or water vapor from mixed wood powder during subsequent molding heating, and effectively prevents wear and tear in the cylinder of the molding machine, or scratches on the surface of the molded product. It is. In addition, by creating such an extremely dry condition, further gasification of wood acid was prevented during reheating and molding, and there was no room for acetic acid gas to form during subsequent molding. It also originates from the point. Furthermore, another requirement is to improve the compatibility between the wood flour and the 81 fat material and to provide a molded product having a high-quality molding surface. In addition, other requirements stem from the need to reduce the frictional resistance of wood flour as much as possible during molding and extrusion, to prevent wear and tear on the molding machine itself, and to provide molded products with less surface roughness. There is a C. To further improve the properties of wood powder A, urea-based resin adhesive is added to materials such as wood chips from Figure 1, and after being heated and hardened, it is crushed into 80 to 300 pieces and pulverized. In the molding method for wood powder a, the wood powder a is cured by sufficient heat, especially while being neutralized with a urea-based resin adhesive.
The wood acid within ' is rapidly removed by neutralization and volatilization, and a hardened adhesive surface is provided around the wood flour, which effectively prevents the moisture content in the wood flour from increasing further. Furthermore, the sliding properties of the wood flour d have been improved, and the frictional resistance during molding and extrusion has been extremely reduced. Mix wood powders a and a' in a thermoplastic resin material, especially vinyl chloride resin C, at a ratio of 30 to 70%, add a stabilizer, and put it into a blender (1). 2)
Pressure-type kneading equipment such as Nigu, Banbury, etc. (
3). Therefore, this kneading device (3) is a two-blade play 1"
(3) a, (3) a are provided with opposing shafts, and a pressurizing lid (3) is attached to this.
Pressure (b) is applied to force the official dough to be kneaded completely, and the kneaded dough (m) is thrown into the popper (4) after two constant movements by a timer cent. Next, the extrusion device heats the circumferential surface of the cylinder (6) of the straight twin-screw (5) in a conventional extruder, and the dough m is strained through the strainer (7).
8) and spread it out into a flat sheet shape using a cutter (3) provided on the -)0 side of this goo (8). The kneaded dough m is difficult to be smoothly fed from the hopper (4) to the molding machine shilling (6) due to the heating and kneading process, so a taper twin screw (10 ), (10) and #l>
It was planned that the kneaded dough m would be forcibly fed. In addition, when extruding a resin containing a large amount of wood flour a and a', which are different materials, the frictional resistance is particularly large, so the dough m is extruded into a thick tube shape to make the molding as smooth as possible. It was intended. The thus extruded molded dough m゛ is heated in a hot air heating device] (++
), the dough m° is reheated, transferred between heat rolls (12) and (12), and heated and rolled out to the dough m until it reaches a predetermined thickness. be. After uniformizing the wall thickness according to the purpose of the molded material Jlj4m', the film (14) is attached and fused to the molded material m°'- with the laminating device (+3)e,
Next, both sides of the molded dough 1 are cut and aligned using a slitter (15) to obtain the desired width and thickness of the molded plate, and then cooled using a cooling roll (1G) and molded into the required mold +J.
It is then guided to a conveyor (17) and sufficiently cooled at the core. The molded dough m° thus formed is taken up and cut at predetermined intervals using a sizing counter device (18) to complete the production of molded plates. In addition, (18) indicates the sizing position at the time of cutting, and (20)
) shows the dust collection duct, and (21) shows the collection box. The molded wood forming apparatus according to the present invention is expected to achieve specific effects on the above-mentioned objects due to the above-mentioned characteristic configuration. In particular, when molding a dough m containing a large amount of wood flour a, a', a device for thoroughly kneading the dough and wood flour a, a' that meet certain conditions are prepared, and furthermore, during extrusion, By setting the torque at a low level and then reheating and rolling it out, a thin molded plate mixed with a large amount of wood flour could be precisely and smoothly produced and provided. In addition, in the past, it was almost impossible to directly mold a molded plate containing a large amount of powder a, a' using an extruder due to the frictional resistance during extrusion. It is. Furthermore, it is actually impossible to produce such a plate by injection molding. This method involves extruding the dough m' and sequentially rolling it out to obtain a molded plate with a predetermined wall thickness. Unlike press molding, the molding line does not have to be stopped, and thin-walled molding can be performed by continuous extrusion molding. It promised to provide mass production of boards.Thus, 0.5 to 5 ml thick, commonly known as 3x6 board, 3x
This makes it possible to provide a large synthetic water-swelling material board called 8-board with a low floor space. 4. Brief description of the drawings Fig. 1 is a 11th view of the main part of the molding apparatus according to the present invention, Fig. 2 A-D is a sectional view of the main part showing the operation of the neag part, and Fig. 3 is a view of the extruder part. Plan view. Figure 4 is an end view of the wood powder, and Figure 5 is an enlarged cross-section of the molded plate.
hJ diagram 6 In addition, in the figure (+)...B1/NGU, (2)...Shooter 1 (5)...Kneading device, (4)...Hopper, (5) ...Screw, (6)...Cylinder, (7)...Strainer-1 (3)...Gui, (9
)...Canter, (+0)...-axis screw, (
11)... Heating device, (12)... Heat roll, (1
3)... Laminating device, (14)... Film,
(+5)...Slinter, (1B)...Cooling roll, (17)...Conto, (18)...Constant-" Kanter device, (]9)...Constant; ”Ii, (20)...
・Dust collection tact (21)...Indicates a collection box. 4￥Revised Applicant Sada Nishihori Principal Attorney Minoru Kuwahara

Claims (2)

[Claims] (1) Particle size is 80 to 300 grains and moisture content! 1.2 to 5% of wood powder and 30 to 70% of wood flour are mixed into a thermosetting resin material, a stabilizer is added to this, and the mixture is sequentially fed from a burengoo to a pressurized knee goo. During pressurized kneading in the Nigu, a twin taper screw is arranged at the bottom of the hopper to which this kneaded dough is sequentially fed, and the kneaded dough is fed under three pressures into the extruder and extruded. A process of cutting the pipe-shaped fabric that is heated and extruded in the machine in the extrusion direction to form a sheet-shaped extruded fabric, and heating this extruded fabric 11! A step of stretching the heated and stretched formed dough, a step of transferring the heated and stretched formed dough between two roll devices, a step of heat rolling and stretching, and a step of appropriately cutting the transferred formed dough in the transport direction of -I. process, and the transferred fabric is unified (guided between roll devices and cooled for shaping); A molding device for molded wood whose special purpose is to make the νJ cut approximately 1'. (2) The molded wood according to claim 1, characterized in that during heating and stretching of the transferred molded dough described in 1iiii, the surface of the molded dough is coated with an appropriate resin film and laminated. Forming force method.