JP2003340907A - Molding machine for board utilizing waste - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mold a board usable in place of wooden veneer and plywood at a low cost by effectively utilizing waste. <P>SOLUTION: A cooling unit 13 comprises a group of a pair of holding type cooling roller 12 for rolling a molten material discharged from the discharge port of the T-die 11 connected to an extruder 10 to form the board having a predetermined thickness, and is arranged in a machine frame. A board receiving stand 14 is arranged on the downstream side of the cooling unit 13, and a cutter 16 having a runnable disc-shaped saw blade 15 for cutting the board at every desired dimension so as to laterally traversing the board is arranged between the receiving stand 14 and the feed-out end of the cooling unit 13. A hot press 17 for removing the strain of the board having the desired dimension received by the receiving stand 14 is provided on the downstream side of the receiving stand 14, and a cooling press 18 for cooling and flattening the board from which strain is removed is arranged on the downstream side of the hot press 18. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding machine for wastes, particularly a molding machine for a board mainly made of waste plastic.

[0002]

2. Description of the Related Art As an example of this type of board forming machine,
There is Japanese Patent Laid-Open No. 2000-309022. In this prior art example, ground shell and waste plastic are mixed and stirred, heated by an extruder, extruded to form a board, cooled and dried, and then the surface of this board is polished to give the shell a unique luster. It states that a recycled makeup board will be created.

[0003]

However, the polishing as in the above-mentioned prior art causes an increase in the manufacturing cost of the recycled product, and further requires a facility for collecting the polishing scraps and the like, which effectively eliminates the waste. I can not use it. This invention does not require a polishing step and a polishing machine as in the above-mentioned prior example,
It is a main object to provide a board molding machine capable of molding a flat board at low cost mainly by effectively utilizing wastes.

[0004]

[Means for Solving the Problems] In order to solve the above-mentioned problems, a specified invention relates to a board in which waste is put into an extruder, melted and kneaded, and then the melt is made into a plate-like board through a T-die. In the molding machine, a cooling unit consisting of a pair of sandwiching type cooling rollers for rolling the melt discharged from the discharge port of the T die connected to the extruder to a board having a predetermined thickness is arranged in the machine frame. A pedestal for this board is arranged downstream of the cooling unit, and between the pedestal and the carrying-out end of the cooling unit, there is a movable circular saw blade that crosses the board in the width direction and cuts to a desired size. The cutting device is arranged, and a heat press for removing the strain of the board of the desired size received by the cradle is provided on the downstream side of the cradle, and the board is cooled and flattened on the downstream side of the heat press. Placed a cooling press to There as a molding machine of the board using waste, characterized in that are.

In order to solve the above-mentioned problems, the T die in the molding machine of this board may be of a single-layer or multi-layer type, and the board may have a single-layer structure or a multi-layer structure.

In order to solve the above problems, the waste in the molding machine for this board is one of 100% thermoplastic waste plastic and a mixture of thermoplastic waste plastic and non-thermoplastic waste material. The non-thermoplastic waste materials include powder / granule of waste building materials or thinned wood, powder / granule of waste paper, and the like.

In order to solve the above-mentioned problems, the cutting device 16 in the molding machine for this board comprises a feed roller 20 on the most loading side and a traveling type cutter unit 21 on the unloading side. This cutter unit 21 is the cutting device. A traveling platform S arranged so as to be able to move forward and backward with respect to the machine frame F of 16 and mounted on the traveling platform S,
The circular saw blade 15 and the rotary drive motor 22 for the circular saw blade 15 which can reciprocate on the traveling platform S in the transverse direction of the board are provided.
The traveling platform S travels in synchronization with the board traveling speed from the upstream end position toward the downstream side every time the board is conveyed by a predetermined distance,
During this time, the cutter head H preferably reciprocates once in the transverse direction of the board, and after the cutter head H returns, the traveling platform S preferably returns to the upstream end position. In order to solve the above problems, the board is clamped on the traveling table S in the molding machine of the board from above and below during the forward movement process of the traveling table S, and the clamping force is released after the cutter head H is returned. Board holding plate 2
5, 26 are provided in the transverse direction of the board at least along the carry-out side of the circular saw blade 15, and the transfer motor 24 for advancing the feed roller 20 and the traveling table S is provided with a machine frame F of the cutting device 16. And is provided in the
Is for constantly rotating the feed roller 20 and transmitting the moving force to the traveling table S only when the traveling table S is initially moved. It is desirable to provide an air cylinder device 28 for returning the traveling platform S from the forward movement position to the upstream end position after the process.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION This is a typical embodiment of the device invention according to claims 1, 2, 3, 4, 5, and 6. 1 and 2
In the figure, A indicates a board forming machine in which waste is charged into the extruder 10, melted and mixed, and then the melt is passed through the T die 11 to form a plate-shaped board.

A cooling unit 1 consisting of a pair of nip-type cooling rollers 12 for rolling a melt discharged from a discharge port of a T die 11 connected to the extruder 10 into a board having a predetermined thickness.
3 is arranged in the machine frame, and a cradle 14 for this board is arranged downstream of the cooling unit 13.
4 and a unloading end of the cooling unit 13, a cutting device having a circular saw blade 15 which crosses the board and cuts into a predetermined size across the width of the board and which rotates around a horizontal axis that can be traveled. 16 and a feeding device 19 are arranged (see FIGS. 5 and 6)).

The cutting device 16 has a structure in which the board can be cut in a straight line in synchronization with the feed rate of the board to be continuously extruded so as to be movable also in the transfer direction of the board. The circular saw blade 15 can reciprocate in the width direction of the board.

In this embodiment, the cutting device 16 comprises a feed roller 20 on the most carrying-in side and a traveling cutter unit 21 on the carrying-out side. The cutter unit 21 is mounted on the machine frame F of the cutting device 16 as a board. And a circular saw blade 15 which is mounted on the traveling platform S and is capable of reciprocating on the traveling platform S in the transverse direction of the board and its rotation. It comprises a cutter head H equipped with a drive motor 22,
The board travels from the upstream end position toward the downstream side in synchronization with the board traveling speed at every predetermined size conveyance, and the cutter head H reciprocates once in the transverse direction of the board during this time. After the head H returns, the traveling platform S
Returns to the upstream end position. The cutter head H has the circular saw blade 15, a drive motor 22 for rotating the circular saw blade 15, and a traveling motor 23 for reciprocating the cutter head H in the transverse direction of the board.
The present invention is the same even if an air cylinder device is used instead of the traveling motor.

A board holding plate 25 for holding the board from above and below on the traveling table S during the forward movement process of the traveling table S and releasing the clamping force after the cutter head H returns.
26, and a transfer motor 24 that advances the feed roller 20 and the traveling table S is provided with a machine frame F of the cutting device 16.
The transfer motor 24 always drives the feed roller 20 to rotate, and transmits the moving force to the traveling table S only when the traveling table S is initially moved (FIG. 5, FIG. 5). 6). That is, since the weight of the traveling platform S and the cutter head H is considerable and the inertial force is large,
Only in the initial movement, the driving force of the feed roller 20 is used, after that the driving force of the feed roller 20 is used, and after that, the board is moved by the feed roller 20. The traveling platform S is provided with an air cylinder device 28 for returning the traveling platform S from the forward movement position to the upstream end position after the step of returning the circular saw blade 15. An electromagnetic clutch (not shown) is provided between the transfer motor 24 and the transmission system of the traveling table S, and the electromagnetic clutch is turned on at the initial movement of the traveling table S to advance the traveling table S. At the same time, the board is clamped by the upper and lower board clamping plates 25 and 26, and thereafter, the electromagnetic clutch is turned off.

The pedestal 14 is a roller conveyor, and a heat press 17 for removing the thermal strain of the board of a predetermined size received by the pedestal 14 is provided downstream of the pedestal 14.
Preferably, the heat press 17 is composed of an upper surface plate that can move up and down with respect to a fixed lower surface plate, and a cartridge heater is embedded in each surface plate. A grain pattern may be formed on at least one of the upper and lower surface plates of the hot press 17. When molding the decorative board, the upper and lower surface plates 17 of the heat press 17 are used.
Tray-shaped recesses for decoration are formed on the processed surfaces of a and 17b. In the case of such a form, the hot press 17
The cooling press 18 includes upper and lower surface plates 18a and 18b having processing surfaces similar to those of the upper and lower surface plates 17a and 17b in FIG. A cooling press 18 that is parallel to the hot press 17 to cool and flatten the strain-removed board is disposed downstream of the hot press 17. The cooling press 18 is composed of an upper surface plate 18a that can move up and down with respect to a fixed lower surface plate 18b. Preferably, each surface plate 18a, 1
A cooling pipe is embedded in 8b.

The T die 11 has a structure for molding the single-layer board. In addition, the single T-die 1
A structure in which a plurality of extruders 10 are connected to one to extrude different kinds of materials into two layers or multiple layers or the T die 11 has a two layers or multiple layers structure is also within the technical scope of the present invention.

The waste is 100% thermoplastic waste plastic or a mixture of thermoplastic waste plastic and non-thermoplastic waste material. The non-thermoplastic waste materials include powder / granule of waste building materials or thinned wood, powder / granule of waste paper, and the like.

The pair of nipping type cooling rollers 12 located on the most carrying-in side of the cooling unit 13 are provided on the machine frame so as to be vertically independent and rotatable about a vertical axis thereof in a horizontal plane (FIG. 3, FIG. 3). (See FIG. 4). If necessary, the cooling roller 12 may be a cooling roller for embossing.

In order to mold a board with the molding machine of this embodiment, as the waste, the thermoplastic waste plastic 10 is used.
0%, one kind of a mixture of thermoplastic waste plastic and non-thermoplastic waste material, for example, a mixture of thermoplastic waste plastic and fine powder of thinned wood, is charged as the waste into the extruder 10, and is melted and kneaded. The melt is discharged in a sheet form from the discharge port of the T die 11.

The melt discharged from the discharge port of the T die 11 is passed through the cooling unit 13 and rolled into a board having a predetermined thickness. A decorative sheet may be appropriately attached to the upper surface of the board during this rolling. At this time, the pair of nipping-type cooling rollers 12 located on the most carrying-in side vertically independently rotate around the vertical axis thereof in a horizontal plane to adjust the gap between the upper and lower cooling rollers 12, The uneven thickness of the melt discharged from the discharge port of the die 11 is corrected to a predetermined thickness.

A board having a predetermined thickness rolled through the cooling unit 13 and having a predetermined thickness is sent to the cutting device 16 by a predetermined dimension. The electromagnetic clutch is turned on at the moment when the predetermined size is sent out, the forward movement of the traveling platform S is started, and at the same time, the upper and lower board clamping plates 25 and 26 are closed to clamp the board. Turn off.
In this state, the feed roller 20 is continuously rotated by the rotation driving motor 24, and the traveling base S coupled to the board is moved by the feed force together with the board in the same direction at a constant speed. In reality, the upper and lower board holding plates 2
5, 26 are clamped while moving in the board conveying direction.
At the same time as or at a very short time, for example, 0.1 second to 1 second, with the start of the movement of the traveling platform S, the cutter head H starts traveling in the transverse direction of the board, and the board holding plates 25, 26.
The board sandwiched from above and below is cut by the circular saw blade 15. At this time, since the circular saw blade 15 is also moving in the board conveying direction together with the traveling table S, the board is accurately cut in the transverse direction.

When the board is completely cut by the circular saw blade 15, the cutter head H is returned to the width direction of the board again, but the board holding plates 25 and 26 continue to hold the board, and the traveling table S remains as it is. Further, the transfer is continued with the board in the carrying direction, and the circular saw blade 15 returns to the inside of the cutting groove of the board just cut and removes the cutting waste. When the return of the cutter head H in the width direction is completely completed, the board holding plates 25 and 26 are separated from each other, and the traveling table S is returned to the upstream end position by the air cylinder device 28.
This operation is repeated every time the board is transferred to a predetermined size (determined according to the purpose).

The board of a predetermined size cut in this way is sent to the pedestal 14 by the sending device 19 and then manually or simply between the lower surface plate 17b and the upper surface plate 17a where the heat press 17 is open. The board is loaded from the cradle 14 by a robot hand of a mold. After that, the upper surface plate 17a is lowered, and the lower surface plate 17b and the upper surface plate 1
The board is sandwiched between the upper and lower portions 7a and passed through the cooling unit 13 to remove the strain generated during rolling. At this time, the heat applied to the board by the hot press 17 is a temperature at which the board is not fused to the upper and lower surface plates 17a and 17b, and preferably 50 to 150 degrees.

After heating and removing the strain in this way, the board is placed on the lower surface plate 18b where the cooling press 18 is open.
Between the lower surface plate 18a and the upper surface plate 18a, the upper surface plate 18a is lowered, the board is sandwiched between the lower surface plate 18b and the upper surface plate 18a from above and below, and a flat board having a desired size is cooled. obtain. At this time, the boards are cooled one by one,
In some cases, multiple sheets may be efficiently stacked and cooled. For example, a board of 3 to 10 mm is formed. Each surface plate 18a, 1
When a cooling pipe is embedded in 8b, the board is forcibly and efficiently cooled. In the molding, the tab pieces of the board and sawdust from the circular saw blade 15 are recovered as raw materials, put into the extruder 10, and reused. Also, the used board molded in this way,
It is crushed and put into the extruder 10 as a raw material to be molded into a recycled board.

[0023]

According to the first, second and third aspects of the present invention, the wood veneer plate can be effectively utilized by effectively utilizing the waste without the polishing step and the polishing machine as in the above-mentioned prior example.
A board that can be used instead of plywood can be formed at low cost. Since a cooling press is arranged as a secondary cooling device downstream of the cooling unit, the cooling unit does not need to completely cool the extruded board, and the length thereof can be shortened. The overall length of the machine can be shortened and the installation area can be reduced. Further, since the board supplied to the cutting device can be supplied before it is completely cooled and hardened, the cutting can be easily performed. In a fourth aspect of the present invention, the pair of nipping type cooling rollers located on the most carrying-in side of the cooling unit are provided on the machine frame so as to be vertically independent and rotatable about a vertical axis thereof in a horizontal plane. Therefore, in addition to the above effects, it is possible to adjust the gap between the upper and lower cooling rollers and correct the uneven thickness of the melt discharged from the discharge port of the T die to obtain a predetermined thickness. According to the invention of claim 5, the board transport speed can be kept constant without stopping the board transport, the manufacturing efficiency is good, the board can be cut at a right angle to the transport direction, and the board has few thickness unevenness. There is no risk of damage to the board and the circular saw blade. According to the invention of claim 6, in addition to the effect of the invention of claim 5, by the action of the board holding plates 25 and 26, the board is cut into a predetermined size without being deformed, and the cut board is It is sent to the next cradle 14.

[Brief description of drawings]

FIG. 1 is a schematic side view of a board forming machine according to an embodiment.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view of a cooling roller.

FIG. 4 is a plan view showing an adjusted state of the cooling roller of FIG.

FIG. 5 is a front view of the cutting device.

FIG. 6 is a side view of FIG.

[Explanation of symbols]

A board molding machine 10 extruder 10 11 T die 12 Cooling roller 13 Cooling unit 14 cradle 16 cutting device 17 heat press 18 Cooling press

Claims (6)

[Claims] 1. A board molding machine A in which waste material is charged into an extruder 10, melted and kneaded, and then the melted material is passed through a T die 11 to form a plate-shaped board. A cooling unit 13 composed of a pair of sandwiching type cooling rollers 12 for rolling the melt discharged from the discharge port of 11 to a board of a predetermined thickness is arranged in the machine frame, and the cooling unit 13 is provided downstream of this cooling unit 13. A pedestal 14 is arranged, and a cutting device having a circular saw blade 15 which is movable between the pedestal 14 and the carry-out end of the cooling unit 13 and which can traverse this board in the width direction to cut it into a desired size. 16 is arranged, and a heat press 17 for straining the board plate having a desired size received by the pedestal 14 is provided on the downstream side of the pedestal 14, and the board plate is provided on the downstream side of the heat press 17. Cold to flatten Molding machine boards utilizing the waste, characterized in that the press 18 is arranged. 2. The board molding machine using waste according to claim 1, wherein the T die 11 is of a single-layer or multi-layer type, and the board has a single-layer structure or a multi-layer structure. . 3. The waste according to claim 1, wherein the waste is one kind of a mixture of 100% thermoplastic waste plastic and a thermoplastic waste plastic and a non-thermoplastic waste material. Board molding machine. 4. The pair of nipping type cooling rollers 12 located on the most carrying-in side of the cooling unit 13 are provided on the machine frame so as to be vertically independent and rotatable about a vertical axis thereof in a horizontal plane. A board forming machine using the waste according to claim 1, 2 or 3. 5. The cutting device 16 comprises a feed roller 20 on the most loading side and a traveling cutter unit 21 on the unloading side. The cutter unit 21 transfers a board to a machine frame F of the cutting device 16. A traveling platform S arranged so as to be able to move forward and backward along the direction, and mounted on the traveling platform S,
The circular saw blade 15 capable of reciprocating on the traveling platform S in the transverse direction of the board and the rotation driving motor 22 thereof are provided. The traveling platform S is located at the downstream side from the upstream end position every time the board is conveyed by a predetermined size. It runs in sync with the board running speed toward
During this time, the cutter head H reciprocates once in the transverse direction of the board, and after the cutter head H returns, the traveling platform S returns to the upstream end position. A board molding machine using the waste described in 2, 3, or 4. 6. A board holding plate 25 which holds the board from above and below during the forward movement process of the carriage S and releases the holding force after the cutter head H is returned to the carriage S.
26 is installed in the transverse direction of the board along at least the unloading side of the circular saw blade 15, and a transfer motor 24 for advancing the feed roller 20 and the traveling table S is provided in the machine frame F of the cutting device 16. The transfer motor 24 constantly drives the feed roller 20 to rotate, and the traveling table S
The moving force is transmitted to the traveling table S only during the initial movement of the traveling table S. The traveling table S is returned from the forward position to the upstream end position after the circular saw blade 15 is returned. The board forming machine using waste according to claim 5, further comprising an air cylinder device (28).