JP3969480B2 - Board molding machine using waste - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a molded product made of waste, particularly a board molding machine mainly composed of waste plastic.
[0002]
[Prior art]
An example of this type of board molding machine is Japanese Patent Laid-Open No. 2000-309022.
In this preceding example, the ground shell and waste plastic are mixed and stirred, heated in an extruder, extruded to form a board, then cooled and dried, and then the surface of the board is polished to give the shell a unique gloss It describes that a recycled decorative board will be created.
[0003]
[Problems to be solved by the invention]
However, polishing as in the preceding example is a factor that increases the manufacturing cost of recycled products, and further, equipment is required for recovery of polishing scraps, and waste cannot be used effectively.
The present invention provides the market with a board molding machine that can form a flat board at low cost by effectively using waste mainly without the need for a polishing process and a polishing machine as in the preceding examples. The main purpose is to do.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the specific invention is a board molding machine A in which waste is put into an extruder 10, melted and kneaded, and then the melt is made into a plate-like board through a T-die 11.
A cooling unit 13 composed of a pair of paired cooling rollers 12 for rolling the melt discharged from the discharge port of the T die 11 connected to the extruder 10 to a board having a predetermined thickness is disposed on the machine frame. A pedestal 14 for this board is disposed downstream of the board 13, and between the cradle 14 and the carry-out end of the cooling unit 13, the board can be traversed in the width direction and cut to a desired size. A cutting device 16 having a circular saw blade 15 is arranged, and a heat press 17 for removing the distortion of the board of a desired size received by the cradle 14 is provided on the downstream side of the cradle 14. A cooling press 18 for cooling and flattening the board is disposed on the downstream side, and the cutting device 16 comprises a feed roller 20 on the most carry-in side and a traveling cutter unit 21 on the carry-out side. The unit 21 is mounted on the traveling platform S, which is disposed on the traveling platform S so as to be able to move forward and backward along the board transfer direction with respect to the machine frame F of the cutting device 16. The circular saw blade 15 capable of reciprocating in the transverse direction and the rotation drive motor 22 thereof,
The traveling table S travels in synchronization with the board traveling speed from the upstream end position toward the downstream side from the upstream end position every time a predetermined size is conveyed, during which the cutter head H reciprocates in the transverse direction of the board. And the carriage S is returned to the upstream end position after the cutter head H is restored, and the board is sandwiched from above and below during the advancing process of the carriage S, and the cutter head After returning to H, board clamping plates 25 and 26 for releasing the clamping force are provided in the transverse direction of the board along at least the carry-out side of the circular saw blade 15, and the feed roller 20 and the carriage S are moved forward. A transfer motor 24 is provided on the machine frame F of the cutting device 16, and the transfer motor 24 always drives the feed roller 20 to rotate, and only when the travel table S is initially moved, the travel table S. Moved to Is intended to transmit a force,
A board using waste, wherein the carriage S is provided with an air cylinder device 28 for returning the carriage S from the forward position to the upstream end position after the circular saw blade 15 is restored. As a molding machine.
The T-die in this board molding machine may be of a single layer or multilayer type, and the board may have a single layer structure or a multilayer structure.
[0005]
The waste in the board molding machine is one of thermoplastic waste plastic 100% and a mixture of thermoplastic waste plastic and non-thermoplastic waste.
Examples of the non-thermoplastic waste material include waste building material or thinned wood powder and granules, and waste paper powder and granules.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
1 is a representative embodiment of the device invention according to claim 1;
1 and 2, A shows a board molding machine in which waste is put into an extruder 10, melted and mixed, and then the melt is made into a plate-like board through a T die 11.
[0007]
A cooling unit 13 composed of a pair of sandwiched cooling rollers 12 for rolling the melt discharged from the discharge port of the T die 11 connected to the extruder 10 to a board having a predetermined thickness is disposed in the machine frame. A pedestal 14 for the board is disposed downstream of the cooling unit 13, and between the cradle 14 and the carry-out end of the cooling unit 13, the board is traversed and the board is traversed in the width direction to have a predetermined dimension. A cutting device 16 having a circular saw blade 15 rotating around a travelable horizontal axis and a feeding device 19 are arranged (see FIGS. 3 and 4).
[0008]
The cutting device 16 is configured to be movable in the board transfer direction in synchronization with the feed speed of the board to be continuously extruded, and to cut the board in a straight line.
The circular saw blade 15 can reciprocate in the width direction of the board.
[0009]
In this embodiment, the cutting device 16 includes a feed roller 20 on the most carry-in side and a traveling cutter unit 21 on the carry-out side, and the cutter unit 21 is in the board transfer direction with respect to the machine frame F of the cutting device 16. A traveling table S arranged to be capable of moving forward and backward along the traveling table S, the circular saw blade 15 mounted on the traveling table S and capable of reciprocating in the transverse direction of the board on the traveling table S, and a rotational drive motor 22 thereof. The traveling table S travels in synchronism with the traveling speed of the board from the upstream end position toward the downstream side for every predetermined size of conveyance, during which the cutter head H It reciprocates once in the transverse direction, and after the cutter head H has returned, the carriage S returns to the upstream end position.
The cutter head H includes the circular saw blade 15, a drive motor 22 that rotates the circular saw blade 15, and a traveling motor 23 that reciprocates the cutter head H in the transverse direction of the board. Even if an air cylinder device is used in place of the traveling motor, the present invention is the same.
[0010]
The platform S includes board clamping plates 25 and 26 that clamp the board from above and below during the forward process of the platform S and release the clamping force after the cutter head H is returned. And a transfer motor 24 for advancing the traveling table S is provided in the machine frame F of the cutting device 16, and the transfer motor 24 always drives the feed roller 20 to rotate and the initial movement of the traveling table S. Only when the moving force is transmitted to the platform S (see FIGS. 5 and 6). That is, since the weight of the carriage S and the cutter head H is considerable and the inertial force is large, the driving force of the feed roller 20 is used only for the initial movement, and the driving force of the feed roller 20 is used thereafter. Thereafter, the board is moved by the movement of the board 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 return process of the circular saw blade 15.
An electromagnetic clutch (not shown) is provided between the transfer motor 24 and the transmission system of the traveling platform S. The electromagnetic clutch is turned on during the initial movement of the traveling platform S, and advances the traveling platform S forward. At the same time, the board is clamped by the upper and lower board clamping plates 25, 26, and thereafter, the electromagnetic clutch is turned off.
[0011]
The cradle 14 is a roller conveyor, and a heat press 17 is provided downstream of the cradle 14 to take thermal strain of the board having a predetermined size received by the cradle 14. Preferably, the heat press 17 includes an upper surface plate that can be moved up and down with respect to a fixed lower surface plate, and a cartridge heater is embedded in each surface plate.
A wrinkle pattern may be formed on at least one of the processed surfaces of the upper and lower surface plates in the hot press 17. When a decorative board is formed, decorative tray-shaped depressions are formed on the processed surfaces of the upper and lower surface plates 17a and 17b in the hot press 17. In the case of such a configuration, the cooling press 18 has upper surface plates 18a and 18b having the same processing surfaces as the upper and lower surface plates 17a and 17b in the hot press 17. .
A cooling press 18 that cools and flattens the board from which distortion has been removed in parallel with the heat press 17 is disposed on the downstream side of the heat press 17. The cooling press 18 includes an upper surface plate 18a that can move up and down relative to a fixed lower surface plate 18b.
Preferably, a cooling pipe is embedded in each of the surface plates 18a and 18b.
[0012]
The T-die 11 has a structure for forming the single-layer board. It should be noted that the present invention can also be applied to a structure in which a plurality of extruders 10 are connected to a single T die 11 and different materials are extruded into two or more layers, or the T die 11 has a two or more layers structure. Belonging to various ranges.
[0013]
The waste is 100% thermoplastic waste plastic, or a mixture of thermoplastic waste plastic and non-thermoplastic waste. Examples of the non-thermoplastic waste material include waste building material or thinned wood powder and granules, and waste paper powder and granules.
If necessary, the cooling roller 12 may be a cooling roller for embossing.
[0014]
In forming a board with this form molding machine, the waste is 100% thermoplastic waste plastic, a kind of a mixture of thermoplastic waste plastic and non-thermoplastic waste, such as thermoplastic waste plastic and thinned wood. A mixture of fine powder is thrown into the extruder 10 as the waste, melted and kneaded, and the melt is discharged in a sheet form from the discharge port of the T die 11.
[0015]
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 the rolling.
At this time, the pair of sandwiching type cooling rollers 12 positioned on the most carry-in side are appropriately rotated around the vertical axis in the horizontal plane, and the gap between the upper and lower cooling rollers 12 is adjusted. The uneven thickness of the melt discharged from the discharge port of the die 11 is corrected to a predetermined thickness.
[0016]
A board having a predetermined thickness that has been rolled to a predetermined thickness through the cooling unit 13 is sent to the cutting device 16 with a predetermined dimension. The electromagnetic clutch is turned on at the moment when the predetermined dimension is fed out, and the traveling platform S is started to move forward. 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 rotational drive motor 24, and the carriage S coupled to the board is moved at the same speed in the same direction together with the board by the feed force. Actually, the upper and lower board clamping plates 25 and 26 are clamped while moving in the board conveying direction.
The cutter head H starts to run in the transverse direction of the board at the same time as the movement start of the carriage S or after a very short time, for example, 0.1 second to 1 second, and is clamped from above and below by the board clamping plates 25 and 26. The board is cut with a circular saw blade 15. At this time, since the circular saw blade 15 is also moved in the board conveying direction together with the carriage S, the board is accurately cut in the transverse direction.
[0017]
If the board is completely cut by the circular saw blade 15, the cutter head H is returned again in the width direction of the board. However, the carriage S continues to be held in the conveying direction as it is held by the board holding plates 25 and 26. The circular saw blade 15 returns to the cutting groove of the board that has just been cut and removes the cutting waste.
When the returning of the cutter head H in the width direction is completed, the board clamping plates 25 and 26 are separated from each other, and the traveling platform S is returned to the upstream end position by the air cylinder device 28.
Thereafter, this operation is repeated each time the board is transferred to a predetermined size (determined appropriately according to the purpose).
[0018]
A board of a predetermined size cut in this way is sent out to the cradle 14 by the feeding device 19, and then a manual or simplified robot between the lower surface plate 17b and the upper surface plate 17a where the heat press 17 is open. The board is carried from the cradle 14 by hand. Thereafter, the upper surface plate 17a is lowered, the board is sandwiched from above and below between the lower surface plate 17b and the upper surface plate 17a, and the distortion generated during rolling is removed through the cooling unit 13.
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.
[0019]
After removing the distortion by heating in this way, the board is carried between the lower surface plate 18b and the upper surface plate 18a in which the cooling press 18 is opened, and the upper surface plate 18a is lowered to lower the surface plate. The board is sandwiched from above and below between the surface plate 18b and the upper surface plate 18a and cooled to obtain a flat board having a desired size. At this time, the boards are cooled one by one, but a plurality of boards may be efficiently stacked and cooled. For example, a 3 to 10 mm board is formed.
When a cooling pipe is embedded in each of the surface plates 18a and 18b, the board is forcibly and efficiently cooled.
In the molding, saw chips from the board ear pieces and the circular saw blade 15 are collected as raw materials, put into the extruder 10 and reused. The used board formed in this way is also crushed and charged as a raw material into the extruder 10 to be formed into a recycled board.
[0020]
【The invention's effect】
In the first aspect of the invention, a board that can be used in place of a wooden plywood board or a plywood board by effectively using waste without the need for a polishing process and a polishing machine as in the preceding example is low-cost. Can be molded.
Since a cooling press is disposed downstream of the cooling unit as a secondary cooling device, it is not necessary for the cooling unit 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.
Moreover, since the board supplied to the cutting device can be supplied before it is completely cooled and cured, cutting can be easily performed. The board conveyance speed can be kept constant without stopping the board conveyance, the production efficiency is good, the board can be cut at right angles to the conveyance direction, the board has few thickness irregularities, and the board and the circular saw blade are damaged. It is not. In addition, due to the effects of the board clamping plates 25 and 26, the board can be cut into a predetermined size without being deformed, and the cut board can be sent out onto the next receiving base 14.
[Brief description of the 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 front view of the cutting device.
4 is a side view of FIG. 3. FIG.
[Explanation of symbols]
A Board forming machine 10 Extruder 10
11 T die 12 Cooling roller 13 Cooling unit 14 Receiving base 16 Cutting device 17 Hot press 18 Cooling press

Claims (1)

In the board molding machine A, the waste is put into the extruder 10 and melted and kneaded, and then the melt is made into a plate-like board through the T die 11.
A cooling unit 13 composed of a pair of paired cooling rollers 12 for rolling the melt discharged from the discharge port of the T die 11 connected to the extruder 10 to a board having a predetermined thickness is disposed on the machine frame. A pedestal 14 for this board is disposed downstream of the board 13, and between the cradle 14 and the carry-out end of the cooling unit 13, the board can be traversed in the width direction and cut to a desired size. A cutting device 16 having a circular saw blade 15 is arranged, and a heat press 17 for removing the distortion of the board of a desired size received by the cradle 14 is provided on the downstream side of the cradle 14. A cooling press 18 for cooling and flattening the board is disposed on the downstream side, and the cutting device 16 comprises a feed roller 20 on the most carry-in side and a traveling cutter unit 21 on the carry-out side. The unit 21 is mounted on the traveling platform S, which is disposed on the traveling platform S so as to be able to move forward and backward along the board transfer direction with respect to the machine frame F of the cutting device 16. The circular saw blade 15 capable of reciprocating in the transverse direction and the rotation drive motor 22 thereof,
The traveling table S travels in synchronization with the board traveling speed from the upstream end position toward the downstream side from the upstream end position every time a predetermined size is conveyed, during which the cutter head H reciprocates in the transverse direction of the board. And the carriage S is returned to the upstream end position after the cutter head H is restored, and the board is sandwiched from above and below during the advancing process of the carriage S, and the cutter head After returning to H, board clamping plates 25 and 26 for releasing the clamping force are provided in the transverse direction of the board along at least the carry-out side of the circular saw blade 15, and the feed roller 20 and the carriage S are moved forward. A transfer motor 24 is provided on the machine frame F of the cutting device 16, and the transfer motor 24 always drives the feed roller 20 to rotate, and only when the travel table S is initially moved, the travel table S. Moved to Is intended to transmit a force,
A board using waste, wherein the carriage S is provided with an air cylinder device 28 for returning the carriage S from the forward position to the upstream end position after the circular saw blade 15 is restored. Molding machine.

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