JPH10156817A - Method and apparatus for manufacturing inorganic plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deformation of an inorganic plate in the case of accelerating and conveying the plate obtained by cutting a green sheet. SOLUTION: A green sheet 2 is cut while conveying the sheet 2 at a predetermined conveying speed to continuously form an inorganic plates 2a. The plates 2a are accelerated by an accelerating conveyor 6 provided at a rear end of a conveying line A via free rollers 5, and sequentially transferred on a tray 7 to be conveyed by a tray conveying line B at an interval between the adjacent plates 2a in a conveying direction. At the stage of arriving the front ends of the plates 2 conveyed on the rollers 5 at the conveyor 6, the rollers 5 of a part for mounting the plates 2a are forcibly driven to become the same conveying speed as that of the conveyer 6, and the plates 2a are transferred to the conveyor 6 from the rollers 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing an inorganic plate for continuously producing an inorganic plate of a desired size by cutting a green sheet formed by extrusion.

[0002]

2. Description of the Related Art Conventionally, a material comprising cement as a main component, a mixture of fibers such as pulp, polypropylene fiber and vinylon fiber, silica components such as silica sand, silica stone powder, fly ash, and water, and an extruder. A green sheet having a solid or hollow portion is extruded to form a green sheet, which is cut and cured to produce an inorganic plate used as an exterior material for construction.

Conventionally, a green sheet continuously extruded by an extruder is placed on a continuously supplied tray, and the green sheet is cut between the trays. An inorganic plate of the desired size was obtained by cutting on a tray, and was conveyed to the next step for curing.

[0004]

However, in the above-mentioned conventional example, since the cutting is performed on the tray, there is a problem that the tray is damaged, and further, the scraps generated when cutting on the tray are unnecessary portions. Therefore, it is necessary to dispose of this, and labor and cost are required for processing unnecessary portions generated when cutting.

[0005] In view of the above, while continuously extruding green sheets through the conveying line, the green sheets are cut one after another to form an inorganic plate continuously, and the cut inorganic sheet is separated from the front end of the conveying line by another path. The idea was to place the sheets one after another on the tray that was placed and transported on the tray transport line. However, the cut inorganic plates, whose cut ends are abutted with each other, are placed on the tray that is transported from the front end of the transport line to the tray transport line on another path and supplied one after another. In such a case, it is not possible to transfer the accurately cut inorganic plates one by one to the continuously transported tray due to a shift in the transfer to the tray or the like. When the green sheet is cut to form a short inorganic plate, the length of the inorganic plate is shorter than the length of the tray. It cannot be transferred to trays that are conveyed one by one continuously.

Therefore, in the course of reaching the present invention, as shown in FIG. 6, while the green sheet 2 continuously extruded by the extruder 1 is being conveyed by the conveying line A,
Conveyor 3 for cutting the extruded green sheet 2
The inorganic plate 2a is continuously formed by being cut by the cutting means 4 in a direction orthogonal to the conveying direction while being conveyed at a predetermined conveying speed, and the cut inorganic plate 2a is conveyed by the cutting conveyor 3 to the free roller 5. The speed is increased by a speed-up conveyor provided at the rear end of the transfer line A, and an interval is provided between the inorganic plates 2a adjacent in the transfer direction, and the tray transfer line B of another route is provided. Transfer to the tray 7 conveyed by the above and conveyed to the next process. In the figure, reference numeral 11 denotes an embossing roll.

However, in FIG. 6, when the front end of the inorganic plate 2a conveyed on the cut free roller 5 is positioned on the speed increasing conveyor 6, the inorganic plate 2a is moved to the speed increasing conveyor 6 at the front end of the inorganic plate 2a. The mounted portion is conveyed at an increased conveyance speed by the speed-up conveyor 6, but the portion of the inorganic plate 2a still mounted on the free roller 5 has the increased conveyance speed. As shown in FIG. 7, the inorganic plate 2a in a soft state before being hardened cannot be followed, and the necking deformation occurs as shown in FIG. In FIG. 7, reference numeral C indicates a constricted portion generated in the inorganic plate 2a.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is intended to continuously cut a green sheet continuously extruded from an extruder into a desired size while simultaneously cutting the green sheet. In order to continuously and accurately transfer onto the tray conveyed on the path, the inorganic plates cut at the front end of the transfer line are accelerated, and the cut inorganic plates are spaced apart, and the An object of the present invention is to provide a method of manufacturing an inorganic plate that can prevent deformation of the inorganic plate when the speed of the inorganic plate is increased when the inorganic plate is sequentially transferred onto a tray that is transferred by a transfer line.

[0009]

In order to solve the problems of the prior art and to solve the problems of the present invention, a method for manufacturing an inorganic plate according to the present invention comprises extruding a green sheet 2 by an extruder 1 and conveying the green sheet 2. The green sheet 2 conveyed by the line A and extruded during the conveyance by the conveying line A
Is cut by cutting means 4 in a direction perpendicular to the conveying direction while being conveyed by the cutting conveyor 3 at a predetermined conveying speed to form the inorganic plate 2a continuously, and the inorganic plate cut while being conveyed by the cutting conveyor 3 2a at the rear end of the transfer line A via a free roller 5
Is a method of sequentially moving the inorganic plates 2a adjacent to each other in the transport direction on the tray 7 transported by the tray transport line B of another route with an interval between the inorganic plates 2a. When the front end of the inorganic plate 2a conveyed on the roller 5 reaches the speed increasing conveyor 6, the free roller 5 where the inorganic plate 2a is placed is moved at the same conveying speed as the conveying speed by the speed increasing conveyor 6. The inorganic plate 2a is forcibly driven to transfer the inorganic plate 2a from the free roller 5 to the speed increasing conveyor 6.

The apparatus for manufacturing an inorganic plate according to the present invention comprises an extruder 1 and a cutting machine for conveying a green sheet 2 disposed in front of the extruder 1 and extruded from the extruder 1 at a predetermined speed. The inorganic plate 2a is continuously formed by cutting a conveyor 3 and a green sheet 2 disposed above the cutting conveyor 3 and conveyed by the cutting conveyor 3 at a predetermined conveying speed in a direction orthogonal to the conveying direction. Cutting means 4, a free roller 5 arranged in front of the cutting conveyor 3, and an inorganic plate 2a arranged in front of the free roller 5 and cut at a higher conveying speed than the conveying speed of the cutting conveyor 3. Conveyor 6 for conveying the
A tray transport line B for sequentially transporting the inorganic plates 2a formed on a separate path and supplied from the front end of the speed-up conveyor 6 on the tray 7; At the stage when the front end of 2a reaches the speed-up conveyor 6, free rollers for forcibly driving the free roller 5 on the portion where the inorganic plate 2a is placed at the same speed as the speed of the speed-up conveyor 6 are transported. It is characterized by being provided with a roller forced driving means 8.

In the present invention, the extruder 1
By cutting the green sheet 2 continuously extruded in the direction perpendicular to the conveying direction to produce the inorganic plate 2a one after another, the green sheet 2 can be cut to a target size so that unnecessary portions do not occur by cutting, In addition, since the cutting is not performed on the tray 7 in this cutting, the tray 7 is not damaged. Then, the green sheet 2 continuously extruded as described above is cut in a direction perpendicular to the conveying direction, and the inorganic sheets 2a having the desired dimensions are successively cut.
After manufacturing, the inorganic plate 2a is accelerated when the cut inorganic plate 2a is placed on the tray transfer line B from the tip end of the transfer line A and is successively transferred onto the tray 7 which is successively transferred. When the transfer from the free roller 5 to the speed increasing conveyor 6 is performed, the inorganic plate 2 of the free roller 5
The portion on which a is riding is forcibly driven to the same speed as the speed-up conveyor 6, so that the inorganic plate 2a can be prevented from being deformed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings. FIG. 1 shows the inorganic plate 2 of the present invention.
A schematic diagram of an apparatus for producing a is shown. In the figure, reference numeral 1 denotes an extruder, and a die 9 serving as a mold is provided at the tip of the extruder 1. The molding material charged into the extruder 1 is provided at the tip of the extruder 1. It is extruded from the die 9 as a green sheet 2 having a hollow portion continuously in the extrusion direction. In the figure, the lower end of the tip of the base 9 protrudes forward to form a receiving section 10, and an embossing roll 11 is disposed above the receiving section 10 and is pushed out of the base 9. The lower surface of the incoming green sheet 2 is supported by the receiving portion 10, and an embossed roll 11 is used to form an uneven pattern on the upper surface of the green sheet 2.

In FIG. 5, reference numeral 12 denotes a take-up conveyor, which is arranged in front of the embossing roll 11, and is adapted to take up the green sheet 2 on which the embossing roll 11 is formed with a concavo-convex pattern at a constant speed. A cutting conveyor 3 that moves at the same speed as the take-off conveyor 12 is disposed in front of the take-off conveyor 12, and a cutting unit 4 is disposed above the cutting conveyor 3, and the cut-off conveyor 3 is arranged as shown in the accompanying drawings. In the embodiment, a water jet injection device is provided as the cutting means 4, and the inorganic sheet 2a is formed by cutting the green sheet in a direction perpendicular to the conveying direction by a water jet injected from the water jet injection device. I have. A free roller 5 is disposed at the tip of the cutting conveyor 3, and a speed-increasing conveyor 6 is disposed in front of the free roller 5. A transport line A for cutting and transporting the green sheet 2 extruded from the extruder 1 by the take-up conveyor 12, the cutting conveyor 3, the free roller 5, the speed increasing conveyor 6, and the like is configured.

Below the speed-increasing conveyor 6 at the end of the above-mentioned conveying line A, a tray conveying line B of another path is arranged, and this tray conveying line B is constituted by a tray conveying conveyor on which the tray 7 is placed and conveyed. I have. Then, the inorganic plate 2a cut to a certain length is supplied from a speed-increasing conveyor 6 to a tray 7 which is placed and transported on a tray transport conveyor via a free roller 5, and is transported to the next step. It has become.

Here, in the present invention, the transport speed of the take-off conveyor 12 and the transport speed of the cutting conveyor 3 are the same, and the green sheets 2 continuously extruded are continuously fed by the take-up conveyor 12. The green sheet 2 is cut by a water jet injection device while being conveyed and further conveyed by the cutting conveyor 3 at the same speed to produce an inorganic plate 2a of a desired size, and the cut inorganic plate 2a is immediately after cutting. is intended to be conveyed to the free rollers 5 V ₁ is the conveyance velocity of the cutting conveyor 3. On the other hand, the conveying speed V ₂ of the speed increasing conveyor 6 has a faster rate than the V ₁ is the conveyance velocity of the cutting conveyor 3, thus, inorganic board 2a obtained by cutting a green sheet 2 free Speed-up conveyor 6 via rollers 5
In the stage of being conveyed, the inorganic plate 2a is conveyed at an increased speed. As a result, the speed of the inorganic plate 2a conveyed on the cutting conveyor 3 in FIG. There is a gap between the inorganic plate 2a and the conveyed inorganic plate 2a. As a result, the cut inorganic plate 2a is not conveyed in a state where the cut inorganic plates 2a abut against each other in the front-rear direction. The tray 7 transported by the tray transport line B which is different from the transport line A
When the inorganic plate 2a is transported upward, the inorganic plate 2a is transported at intervals, so that one inorganic plate 2a can be reliably transported to one tray 7.

That is, when the cut inorganic plate 2a is placed on the tray transport line B from the leading end of the transport line A and is successively transferred onto the tray 7 which is successively transported, the speed of the conveyor 6 is increased. Since the inorganic plates 2a are successively transferred onto the trays 7 that are successively transported on the tray transport line B with an interval between them, the trays 7 are moved to the inorganic plates 2a in consideration of transfer errors and the like. Even if the size is slightly larger than that, the cut inorganic plate 2a can be reliably transferred to the tray 7. Further, when the inorganic plate 2a is cut into a short length, even when the trays 7 for transporting the long inorganic plate 2a are transported at the same interval and at the same speed, the speed-up of the speed-up conveyor 6 is increased. By adjusting the speed, it is possible to easily supply in response.

Further, in the present invention, when the speed increasing conveyor 6 is disposed in front of the free roller 5 as described above, and the inorganic plate 2a is transported at an increased speed, the free roller 5
When the front end of the inorganic plate 2a conveyed above reaches the speed-up conveyor 6, the free rollers 5 on which the inorganic plate 2a is placed have the same conveyance speed as the conveyance speed by the speed-up conveyor 6. A free roller forcible driving means 8 for forcibly driving is provided.

Hereinafter, the free roller forced driving means 8 will be described with reference to FIGS. A base 15 is disposed from a position above the side of the free roller 5 to a position above the side of the speed increasing conveyor 6, and a pair of guide rods 16 is mounted on the base 15 above the side of the free roller 5. From the position to the upper position on the side of the speed increasing conveyor 6
And, it is arranged to be inclined at the same inclination angle as the inclination of the speed increasing conveyor 6. A linear guide 18 provided on a moving body 17 is movably attached to the pair of guide rods 16. In the figure, reference numeral 19 denotes a rotatably supported screw rod, which is screwed into a nut portion 24 provided on the moving body 17. The screw rod 19 is rotated by a motor 20 mounted on the base 15 via a pulley 21, a conduction belt 22, and a pulley 23. It can be moved back and forth along. Here, when the moving body 17 moves at least in the transport direction of the inorganic plate 2a (that is, when moving from the free roller 5 side to the speed increasing conveyor 6 side), the driving speed of the speed increasing conveyor 6 ( and moves at a transport speed) the same velocity V ₂ of the inorganic board 2a by words accelerating conveyor 6.

A cylinder device 24 is mounted on the moving body 17, and a rod 25 that moves up and down the cylinder device 24 is provided.
A bar member 26 parallel to the guide bar 16 is attached to the lower end of the guide bar 16, and a long pressing member 27 parallel to the guide bar 16 formed of an elastic member such as rubber is attached to the bar member 26. The long pressing member 27 is set to be slightly longer than the length of the free roller 5 in the front-rear direction of the plurality of rollers. It is reciprocable from a parallel “initial position” to a “moving position” parallel to the front-rear direction of the speed-increasing conveyor 6 at a position above the side end of the speed-increasing conveyor 6.

The pressing member 2 attached to the bar member 26
When moving from the “initial position” to the “moving position”, the cylinder 7 is moved downward while being pressed down by the cylinder device 24 and pressed against the free roller 5 (in this case, the pressing member 27 is pressed). When the conveyor is moved to the speed-up conveyor 6, it may be pressed against the side end of the speed-up conveyor 6, or the width of the speed-up conveyor 6 may be shortened, and the pressing member 27 may be pressed. 6 may not be in contact with each other). Conversely, the pressing member 27 attached to the bar member 26 is moved from the “moving position” to the “initial position”.
When it moves to the position, it is lifted upward by the cylinder device 24 and moved without contacting the free roller 5.

Therefore, the pressing member 27 is moved to the "initial position".
When moving from the position to the "movement position", the roller of the portion where the pressing member 27 of the free roller 5 is in contact with the pressing member 2
7 is forcibly rotated at the same speed as the moving speed. Thus, the green sheet 2 continuously extruded by the extruder 1 is cut by the cutting conveyor 3.
Is cut in a direction perpendicular to the conveying direction by the cutting means 4 while being conveyed at a speed V ₁ to produce an inorganic plate 2 a having a desired size. It is conveyed by the speed rate V ₁ in. Then, the inclined free roller 5 is moved at the speed V
While being conveyed in step ₁ , the cut inorganic plate 2a reaches the speed-increasing conveyor 6, and at the same time, the pressing member 27 waiting at the “initial position” descends to press the free roller 5 and to move the moving body 17 together. is intended to move at the same velocity V ₂ (the conveying speed of the inorganic board 2a by words accelerated conveyor 6) driving speed of the speed increasing conveyor 6. Thereby, the pressing member 2
7 moves while pressing the free roller 5, the free roller 5 of the portion transporting the inorganic plate 2 a is forcibly driven in synchronization with the speed increasing conveyor 6, and a part of the free roller 5 rides on the speed increasing conveyor 6. and a portion is conveyed by accelerating the conveyor 6 and the free rollers 5 each part of the inorganic board 2a in a state of riding on the free rollers 5 at the same speed V _2, inorganic board 2a
Is a phenomenon in which a portion riding on the free roller 5 is deformed without following the transport speed of the speed increasing conveyor 6 in a state where a part is on the speed increasing conveyor 6 and a part is on the free roller 5. It does not happen.

As described above, the inorganic plate 2a is transported in a state where a part of the inorganic plate 2a rides on the speed increasing conveyor 6 and a part thereof rides on the free roller 5, and when the inorganic plate 2a is completely transferred to the speed increasing conveyor 6, (That is, at the time when the pressing member 27 reaches the “moving position”), the pressing member 27 is raised by the cylinder device 24 and the moving body 17 is moved in the opposite direction (that is, the direction opposite to the conveying direction of the inorganic plate 2a). The pressing member 27 is moved to the “initial position” again.

[0023] Then, since, in the same way, while conveying a free roller 5 inorganic board 2a that is next cut is inclined by the speed V _1, it cuts the inorganic board 2a reaches the speed increasing conveyor 6 At the same time, the pressing member 27 waiting at the “initial position” descends to press the free roller 5 and move the moving body 17 at the same speed V ₂ as the driving speed of the speed increasing conveyor 6.

Here, in cutting the green sheet 2 extruded by the extruder 1 to form the inorganic plate 2 a, the longest cut length of the obtained inorganic plate 2 a is equal to the length of the free roller 5 in the front-rear direction. They are set to approximately the same length. In the embodiment shown in the accompanying drawings, the pressing member 27 is configured to press the free roller 5 over the entire length in the front-rear direction as shown in FIG. , The cut length of the inorganic plate 2a is the length of the free roller 5 in the front-rear direction. Of course, the length with which the pressing member 27 presses the free roller 5 in the front-rear direction when it is lowered at the “initial position” may be changed in accordance with the cutting length of the inorganic plate 2a. In this case, it is possible to easily change the “initial position” by changing the moving position of the moving body 17. Therefore, when the green sheet 2 is cut to form the inorganic plate 2a, the cut length can be changed.

When the green sheet 2 extruded by the extruder 1 is cut, the driving speed of the speed-increasing conveyor 6 and the moving body 17 are adjusted according to the cutting length of the inorganic plate 2a.
By controlling the reciprocating speed of, as described above corresponds to the length of the cut inorganic board 2a, a free roller 5 which is inclined to cut mineral plate 2a while transporting by the speed V _1, At the same time that the cut inorganic plate 2a reaches the speed increasing conveyor 6, the pressing member 27 waiting at the "initial position" descends to press the free roller 5 and to move the moving body 17 to the speed increasing conveyor 6. Speed V ₂ same as driving speed
It is possible to adjust the timing so that the user can move with.

Incidentally, an inorganic plate detection sensor (not shown)
And the inorganic plate detection sensor detects that the front end of the inorganic plate 2a conveyed by the free roller 5 has reached the speed increasing conveyor 6, and the pressing member 27 located at the "initial position".
Is lowered and pressed against the free roller 5, and the moving body 1
7 is moved to the speed increasing conveyor 6 side, and when the inorganic plate 2a is separated from the free roller 5 by the inorganic plate detecting sensor, the "moving position" is known and the pressing member 27 is raised. At the same time, the moving body 17 may be moved to the free roller 5 side to return to the “initial position” again.

[0027]

According to the first aspect of the present invention, as described above, the green sheet is extruded by the extruder and transported by the transport line, and is extruded while being transported by the transport line. An inorganic plate cut by a cutting means in a direction perpendicular to the transport direction while continuously transporting the green sheet by a cutting conveyor in a direction perpendicular to the transport direction while transporting the green sheet by a cutting conveyor, and cutting the green sheet while transporting the green sheet by the cutting conveyor. The speed is increased by a speed increasing conveyor provided at the rear end of the transfer line via a free roller, leaving an interval between the inorganic plate and the inorganic plate adjacent in the transfer direction, and using a tray transfer line on another path. Since the green sheets that are continuously extruded from the extruder are continuously cut to the desired dimensions, they are conveyed on a separate path because they are successively transferred onto the conveyed tray. It can be transported onto the tray continuously and accurately on the tray. In this way, since it is transported to the target size before transporting to the tray, unnecessary parts generated by cutting as in the past Does not occur, and the tray is not damaged by cutting, and the part where the inorganic plate is placed when the front end of the inorganic plate conveyed on the free rollers reaches the speed-up conveyor The free rollers are forcibly driven to have the same transfer speed as the transfer speed of the speed-up conveyor, and the inorganic plate is transferred from the free rollers to the speed-up conveyor. When transporting the inorganic plate, the part where the inorganic plate of the free roller rides is forcibly driven to the same speed as the speed-up conveyor to prevent the inorganic plate from being deformed. Without shaping, it is possible to increase the speed and to sequentially transport the inorganic plates adjacent to each other in the transport direction on a tray transported by a tray transport line of another path, with an interval between the inorganic plates. . FIG. 8 shows the effect of the present invention on the shape of the inorganic plate. As is clear from FIG. 8, when the present invention is not applied, as shown in FIG. 8 (a), a large constriction that occurs at the time of speed increase after cutting occurs in the middle of the inorganic plate, resulting in poor shape and poor yield. (In FIG. 8A, the dimension a indicates the width of the front of the inorganic plate, the dimension b indicates the width of the rear of the inorganic plate, and the constriction amount = ab−2.
8A, and the hatched portion in FIG. 8A is a machining allowance for cutting in accordance with the constricted deformed portion C, and this portion becomes a yield-deteriorating portion) when the present invention is applied. 8B, as shown in FIG. 8B, the occurrence of constriction due to the speed increase after cutting is eliminated, the shape is good, and the yield can be improved (FIG. 8B, dimension a).
Represents the width dimension of the front part of the inorganic plate, and the dimension b represents the width dimension of the rear part of the inorganic plate, and the constriction amount = ab−0. As described above, according to the present invention, it is possible to efficiently produce a multi-size inorganic plate without causing constriction and deterioration in yield, thereby producing a great economic effect.

Further, in the invention according to claim 2 of the present invention, as described above, the extruder and the green sheet that is disposed in front of the extruder and extruded from the extruder are driven at a predetermined speed. A cutting conveyor to be conveyed by, and a green sheet placed above the cutting conveyor and conveyed at a predetermined conveying speed by the cutting conveyor in a direction orthogonal to the conveying direction to continuously form inorganic plates. Cutting means for cutting, a free roller arranged in front of the cutting conveyor, and an increase for conveying the inorganic plate cut at a higher conveying speed than the conveying speed of the cutting conveyor arranged in front of the free roller. It is composed of a high-speed conveyor and a tray transport line for sequentially loading and transporting inorganic plates formed on a separate path and supplied from the front end of the speed-up conveyor on a tray, When the front end of the inorganic plate conveyed on the roller reaches the speed-up conveyor, the free roller on the portion where the inorganic plate is placed is forcibly driven to the same speed as the speed of the speed-up conveyor. Since the free roller forced driving means for performing the above-described method is provided, it is possible to provide an apparatus capable of achieving the effects as described in the invention of the above method.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a manufacturing apparatus of the present invention.

FIG. 2 is a front view showing a free roller forced driving unit according to the first embodiment;

FIG. 3 is a plan view of the same.

FIG. 4 is a side view showing a moving body part according to the first embodiment;

FIG. 5 is a side view showing a motor part of the same.

FIG. 6 is a schematic explanatory view of a manufacturing apparatus for comparison considered in a process leading to the present invention.

FIG. 7 is an explanatory diagram showing deformation occurring in the inorganic plate when the inorganic plate is transported at an increased speed.

FIG. 8 (a) is an explanatory diagram for explaining the constriction generated in the conventional method, and FIG. 8 (b) is an explanatory diagram for explaining that no constriction occurs in the present invention.

[Explanation of symbols]

 Reference Signs List A conveying line B tray conveying line 1 extruder 2 green sheet 2a inorganic plate 3 cutting conveyor 4 cutting means 5 free roller 6 speed-up conveyor 7 tray 8 free roller forced driving means

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Noriyoshi Miura 12th Nakamachi, Muroran City, Hokkaido Nittetsu Muroran Engineering Co., Ltd. (72) Inventor Asahi Takahashi 12th Nakamachi, Muroran City, Hokkaido Nittetsu Muroran Engineering Co., Ltd. (72) Inventor Hisashi Umeki 12 Nakatsucho, Muroran-shi, Hokkaido Nittetsu Muroran Engineering Co., Ltd.

Claims (2)

[Claims] 1. A green sheet is extruded by an extruder, conveyed by a conveying line, and a green sheet extruded on the way of being conveyed by the conveying line is conveyed by a cutting conveyor at a predetermined conveying speed in a conveying direction. A speed increasing conveyor provided by cutting the inorganic plate continuously by cutting means in a direction orthogonal to the direction of the inorganic plate and providing the cut inorganic plate to the rear end of the transfer line via a free roller while being conveyed by a cutting conveyor. This is a method in which the speed is increased and the interval between the inorganic plates adjacent to each other in the transport direction is separated, and the transport is sequentially performed on the tray transported by the tray transport line of another path, and transported on the free roller When the front end of the inorganic plate to be moved reaches the speed-up conveyor, the free roller on the portion where the inorganic plate is placed is moved at the same speed as the speed of the speed-up conveyor. And transferring the inorganic plate from the free roller to a speed increasing conveyor by forcibly driving the inorganic plate. 2. An extruder, a cutting conveyor arranged in front of the extruder and conveying a green sheet extruded from the extruder at a predetermined speed, and a cutting conveyor arranged above the cutting conveyor for cutting. Cutting means for continuously cutting the green sheet conveyed at a predetermined conveying speed by the conveyor for the inorganic sheet by cutting the green sheet in a direction perpendicular to the conveying direction, and a free roller disposed in front of the cutting conveyor. A speed-up conveyor for conveying the cut inorganic plate at a speed higher than the speed of the cutting conveyor, which is arranged in front of the free rollers, and formed on a separate path and supplied from the front end of the speed-up conveyor It consists of a tray transport line for sequentially transporting the inorganic plates placed on the tray, and the front end of the inorganic plates transported on the free rollers reached the speed-up conveyor Inorganic plate characterized by comprising free roller forced driving means for forcibly driving the free roller of the portion on which the inorganic plate is mounted in the step so that the speed of the free roller is the same as the speed of conveyance by the speed-up conveyor Manufacturing equipment.