JPH11139861A - Equipment for production of soundproof plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a line of soundproof plate production equipment, to reduce a floor area and to enhance production efficiency. SOLUTION: This production equipment has an agitating and drying device 20 which has the agitating function to knead monolithic pottery particles, glass powder and water glass and the function to supply hot wind during agitating in combination and produces forming blank particles, a press forming device 40 which feeds the forming blank particles into a molding flask and press forms the particles with required pressure and a firing device 60 which forms the required soundproof plates by firing the press formed goods.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a soundproof plate.

[0002]

2. Description of the Related Art Conventionally, there is a soundproof plate made of ceramic as a soundproof wall provided on a shoulder of a road, a side of a railway line or the like. This ceramic soundproof plate has the advantage that soundproof performance (including sound absorbing performance; hereinafter used in the same sense) and durability are superior to those made of glass wool.

Further, as a method for manufacturing the above-mentioned ceramic soundproof plate, there is a method using molding material particles for a soundproof plate described in JP-A-9-3835. In this method,
A predetermined amount of amorphous ceramic particles obtained by crushing tile waste, glass powder obtained by crushing waste glass bottles, etc., and water glass are kneaded and dried in a predetermined amount, and the surface of the irregular ceramic particles is cleaned. Molding material particles coated with a layer of glass powder and dried water glass are manufactured in advance, and at the time of the production of the soundproofing board thereafter, an appropriate amount of water is added to the forming material particles to make the water glass of the coating layer viscous, The molding material particles are put into a mold frame, press-molded, and fired to obtain a soundproof plate.

[0004] The manufacturing equipment of the molding material particles includes a stirring device for kneading raw materials such as irregular shaped ceramic particles, glass powder and water glass, and a drying device for heating and drying the kneaded material. This was done in a separate step by a separate device. Therefore, the equipment becomes large and a considerable space is required, and the material has to be taken out of the stirring device and transferred to the drying device, which is troublesome. In addition, during drying by a drying device, the raw material particles are bonded together by water glass and coarsened. Was needed. Therefore, conventionally, a crusher and a sieving machine were required, and the production line was relatively long for a simple process.

When a soundproof plate is manufactured using the molding material particles obtained as described above, an appropriate amount of water is added to the material particles and kneaded, and the water glass layer of the material particles is viscous. Thus, a coating layer adjusting device used in a coating layer adjusting step for providing a coating layer is required. For this reason, conventionally, a large number of devices are required from the production of molding material particles to the final production of a soundproof plate, and they are installed, and each device is connected to a series of lines by a conveyor or the like. As a whole, it became large-scale and required not only a considerable running cost but also a large space. Also,
It is troublesome to control a plurality of devices, and there is a problem that maintenance becomes complicated as the number of devices increases.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a soundproofing plate manufacturing facility capable of shortening a manufacturing line and increasing production efficiency. is there.

[0007]

That is, the present invention provides:
A stirring / drying device for producing molding material particles having both a stirring function for kneading amorphous ceramic particles, glass powder and water glass and a function for supplying hot air during stirring, and The present invention relates to a sound-insulating plate manufacturing facility including a pressure-forming apparatus that is charged into a frame and press-formed at a required pressure, and a firing apparatus that sinters the pressure-formed product to form a required sound-insulating plate.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a schematic plan view showing one embodiment of the manufacturing equipment of the present invention, FIG. 2 is a schematic side view of the manufacturing equipment of FIG. 1, FIG. 3 is a schematic cross-sectional view showing one embodiment of the stirring / drying apparatus, and FIG. Is a sectional view taken along the line AA in FIG. 1, and FIG. 5 is an operation explanatory view showing charging of molding material particles into a mold.

[0009] The soundproofing board manufacturing equipment 10 shown in FIGS. 1 and 2.
Is constituted by a stirring / drying device 20, a pressure forming device 40, and a baking device 60, and each device is connected by a belt conveyor C1, C2, C3 and a ladle moving mechanism 75 and is continuous.

The agitating / drying device 20 is for producing the molding material particles of the soundproof plate from raw materials, that is, from amorphous ceramic particles, glass powder, water glass, alcohol and the like, as shown in FIG. Further, it mainly comprises an outer shell 21, a stirring blade 25, raw material input pipes P1, P2, P3 and a hot air blowing pipe 28, and has both a stirring function and a drying function.

The outer shell 21 corresponds to a kind of container for accommodating the raw material of the molding material particles and stirring and drying the raw material. The upper and lower portions of the vertical cylinder are closed and housed inside. The part 22 is formed, and the hermeticity is maintained so that the raw material does not scatter outside during stirring.

A discharge port 23 for taking out material particles is formed at a lower portion of the outer shell 21, and an exhaust port 30 is formed at an upper portion for naturally discharging moisture and the like generated during the production of the material particles. The discharge port 23 is connected to a discharge pipe 24 via an on-off valve formed of an electromagnetic valve or the like, so that material particles can be supplied from the discharge pipe 24 to the rear upper surface of the conveyor C1 via the first hopper 70. ing. Further, the exhaust port 30 can be freely opened and closed by a lid 31 movable by an air cylinder, a solenoid, or the like. Further, a maintenance door (not shown) is provided on the side wall of the outer shell 21 so as to be openable and closable, so that the inside can be easily repaired from the outside. In this embodiment, the lower part of the outer shell 21 is supported by the legs L,
A forced exhaust pipe 32 is connected to the upper part. still,
Only one of the exhaust port 30 and the forced exhaust pipe 32 may be provided.

The stirring blade 25 is provided at the bottom of the outer shell 21 for stirring and kneading the raw material in the storage section 22. The blade 26 disposed at the center of the bottom is driven by an electric motor or the like. The part 27 rotates.
The size and shape of the stirring blade 25 and the capacity of the drive unit 27 are selected so that sufficient stirring can be performed even when the raw material has viscosity.

The raw material charging pipes P1, P2, and P3 are used for measuring the raw material and simultaneously charging the raw material into the accommodating portion 22 of the outer shell 21 without the need to separately measure the raw material. One end is connected to the upper part of the outer shell 21 and communicates with the housing 22. The raw material input pipe P1 branches from the middle into pipes P1a and P1b.
P1b and the other ends of the raw material input pipes P2, P3 are connected to tanks T1a, T1b, T2, T3 with a discharge valve. And the raw material input pipes P1, P2, P
The discharge valves are opened and closed by the control devices of the measuring devices S1, S2 and S3 provided in the tanks T1a and T1.
b, T2, and T3 are sent to the measuring devices S1, S2, and S3, and the required amount is measured and supplied to the storage section 22. The same measuring device S1 is used for the powder or particulate raw material (amorphous ceramic particles and glass powder), and the tank T1a located at the other end of the pipes P1a and P1b branched from the measuring device S1. , T1b contain amorphous ceramic particles and glass powder. On the other hand, with respect to liquid raw materials (water glass and alcohol), it is desirable to provide the respective measuring devices S2 and S3 in order to avoid a chemical reaction or the like.

The hot air blowing pipe 28 is for blowing hot air into the outer shell housing portion 22 at the time of drying when manufacturing molding material particles, and has one end passing through the shaft core of the stirring blade 25. The other end is connected to the warm air generator 29 in communication with the housing section 22. The blowing of the hot air from the hot air blowing pipe 28 is performed continuously during drying, and while blowing the hot air, moisture is discharged from the exhaust port 30 or the forced exhaust pipe 32 at appropriate intervals. You may do so. The blowing and stopping of the warm air at that time are controlled by a blower or the like.

The agitating / drying device 20 and the next pressure forming device 40 are connected by two belt conveyors C1 and C2 and a ladle moving mechanism 75. Stirring / drying device 2
The belt conveyor C1 located closer to 0 is provided from below the stirring / drying device 20 toward the second hopper 73,
Material particles supplied from the stirring / drying device 20 via the first hopper 70 are transported to the second hopper 73. In addition, the first hopper 70 and the belt conveyor C1 are eliminated, and the stirring / drying device 20 is replaced with the second hopper 73.
You may make it provide on.

The belt conveyor C2 includes a second hopper 73
Is provided from below to the pressure forming apparatus 40 so as to supply a required amount of material particles to the ladle 76. For example, the distance between the discharge port of the second hopper 73 and the belt conveyor C2 is set to a fixed size, and when the belt conveyor C2 is moved, material particles having a fixed width dimension and a fixed height dimension are supplied onto the belt conveyor C2. By controlling the amount of movement of the belt conveyor C2, a required amount of material particles can be conveyed to the ladle 76. Second hopper 73
Is transferred to the tip of the belt conveyer C2 and dropped to the ladle 76 of the ladle moving mechanism 75 located immediately below the tip.

The bottom of the ladle 76 of the ladle moving mechanism 75 can be freely opened and closed by a shutter (not shown) which is moved by an air cylinder or the like. The space between the upper part 42 can be advanced and retracted by an air cylinder or the like. The ladle 76 receives the material particles falling from the tip of the belt conveyor C2 in a state where the bottom is closed.
After the upper part of the ladle 76 is moved and stopped temporarily, the bottom of the ladle 76 is opened at that position, and the material particles in the ladle 76 are dropped into the mold 42, while the upper surface of the raw material particles is scraped. It moves again to return directly below the tip of the belt conveyor C2.

Next, the pressure forming apparatus 40 will be described. The pressure forming apparatus 40 is for forming a plate-shaped body (press-formed product, the same applies hereinafter) by shaping a required amount of material particles by pressurization. ,
A press 47, a release mechanism 52 and an extrusion mechanism 55 are provided.

The rotary table 41 is formed in a disk shape rotatably supported by a machine base 44, and has a plurality of molds 4 on its upper surface.
In this example, four pieces 2 are installed at intervals of 90 degrees, and an opening 53 for pushing up the bottom plate is formed through a portion of the rotary table 41 where the mold 42 is arranged. The rotary table 41 is used for the machine base 4.
The drive motor N provided in the controller 4 controls the rotation of the mold 42 by a predetermined angle in accordance with the position of the formwork 42, in this example, by 90 degrees in one direction. The formwork 42 has a size corresponding to the size of the soundproofing board to be manufactured, and a bottom plate 46 made of metal or the like is detachably disposed inside the formwork 42, and a space surrounded by the bottom plate 46 and the inner surface of the formwork 42. Are the accommodating portions 43 of the molding material particles.

As shown in FIG. 4, the press 47 presses a press plate 50 composed of a pressing portion 48 formed to project downward and a peripheral portion 49 around the pressing portion 48, and a hydraulic device or the like (not shown) above the press plate 50. The pressing unit 48 causes the mold 42 to be lowered.
The molding material particles in the inside are pressed and shaped into the shape of the mold frame 42. After the shaping, the press platen 50 rises again.

The demolding mechanism 52 includes a pressure-formed plate-shaped body M
A rod-shaped push-up for pushing up the (formed molding material) above the mold frame 42 and releasing the mold from the bottom plate pushing-up opening 53 of the rotary table 41. It comprises a member 52a and an elevator 52b such as an air cylinder for raising and lowering the push-up member 52a, and is provided on the machine base 44 in accordance with the removal position.

The extruding mechanism 55 is a plate-like body M pushed up together with the bottom plate by the demolding mechanism 52 above the formwork 42.
Is pressed from the side, and a conveyor C3 for the firing device 60 is pressed.
It has a pushing member 56 that can be moved upward and is slidable back and forth by an air cylinder or the like.

The baking apparatus 60 in the next step uses the conveyor C
This is for firing the plate-shaped material M transferred by 3 and sintering the entire plate-shaped material M, and is constituted by a known so-called firing furnace 61.

Hereinafter, the production of the soundproof plate using the production facility 10 will be described. First, molding material particles are produced by the stirring / drying device 20. that time,
The tanks T1a and T1b contain irregular shaped ceramic particles and glass powder, and the tank T2 contains water glass and T
3 contains methyl alcohol as alcohol. After the required amount of the irregular shaped ceramic particles and the glass powder is measured by the measuring device S1, it is put into the accommodating portion 22 of the outer shell 21 and is stirred by the stirring blade 25 at the inner bottom of the outer shell 21. A required amount of water glass measured by the measuring device S2 is put therein, and agitated and kneaded to form a water glass kneaded material. Further, a required amount of methyl alcohol measured by the measuring device S3 is added to the water glass kneaded material, and the mixture is kneaded to be uniform. continue,
During this kneading, hot air is blown through the hot air blowing pipe 28 and, at the same time, moisture or the like is discharged from the exhaust port 30 or the forced exhaust pipe 32 at an appropriate timing (intermittent or continuous), so that the outer shell 21 is accommodated. The kneaded material in the part 22 is dried to a required degree to obtain molding material particles.

The ratio of each raw material used here is set to a predetermined mixing ratio in order to ensure soundproofing performance and to prevent the molding material particles from being combined with each other due to the viscosity generated at the time of stirring to form a mass. It is preferable that the particle size of the powder raw material is within a certain range. The mixing ratio and the range of the particle size are as follows. Amorphous ceramic particles containing particles having a particle size of 0.50 to 1.18 mm in an amount of 80% by weight or more are 100 by weight ratio, and the particle size is 0.25 m.
It is preferable that the glass powder containing 95% by weight or more of particles having a particle size of m or less is 15 to 20 by weight, water glass is 9 to 13 by weight, and alcohol is 1 to 2 by weight.

Further, as the irregular shaped ceramic particles, those obtained by grinding waste ceramics and the like can be used. In addition, since particles having a non-uniform shape can be easily obtained by this pulverization, the gap between the particles formed on the soundproof plate has various shapes, the range of the absorption frequency is widened, and high soundproof performance is obtained. Can be. As the glass powder, a powdery material obtained by grinding waste glass or the like can be used. These materials are effective in environmental protection and cost in terms of waste recycling.

The molding material particles formed in the stirring / drying device 20 are discharged from a discharge port 23 and are discharged from a discharge pipe 2.
4, through the first hopper 70 and the belt conveyor C1.
Is supplied to the rear upper surface. The material particles supplied on the belt conveyor C1 are conveyed to the front and are conveyed to the belt conveyor C1.
And is stored in the second hopper 73. The material particles supplied to the rear upper surface of the belt conveyor C2 from the second hopper 73 are conveyed forward, and are fed to the belt conveyor C2.
2 and is stored in the ladle 76. At this time,
The ladle 76 has a bottom portion 77 closed by a shutter. After the material particles are stored, as shown in FIG.
The press forming apparatus 40 advances toward the rotary table 41, stops above the mold frame 42 located near the belt conveyor C2 on the rotary table 41, and sets the ladle 7 at that position.
The bottom 77 of 6 opens and the material particles Ma fall into the mold 42. After the material particles Ma fall, the ladle 76 moves to the lower end of the belt conveyor C2 again. At this time, as shown in FIG. 5B, a scraper 78 provided at the lower part of the ladle 76 is moved. Leveling the material particles Ma in the formwork 42,
The upper surface Mb of the material particles Ma is flattened.

Next, a pressure molding step is performed. When the material particles are accommodated in the mold 42, the rotary table 41 is rotated 90 degrees in a predetermined direction, and the mold 42 in which the molding material particles are accommodated moves directly below the press 47. Next, the press platen 50 descends and presses the molding material particles in the mold frame 42 at a required pressure to shape the plate material M (soundproof plate). Thereafter, the rotary table is again rotated by 90 degrees in the same direction, and the mold 42 in which the plate-shaped body M is accommodated is moved to the belt conveyor C3.
Move to a position adjacent to. At this time, the push-up member 52a is located immediately below the bottom plate 46 of the mold 42a, and the rise of the push-up member 52a pushes up the bottom plate 46 of the mold to remove the plate-shaped body M from the mold 42. The pushing member 56 of the pushing mechanism moves forward and the plate-shaped body M is moved to the bottom plate 4 of the mold frame 42.
6 onto the belt conveyor C3.

Thereafter, a firing step is performed. The plate-shaped body M transferred onto the belt conveyor C3 is transferred to the firing device 60 by the belt conveyor C3, and is heated at a predetermined temperature to be fired to be a desired soundproof plate.

It is efficient that the control of each device, the belt conveyor, and the like is automatically performed by a control device that controls the manufacturing equipment collectively.

[0032]

As shown and described above, the soundproofing plate manufacturing equipment of the present invention includes a stirring / drying device, a pressure molding device, and a baking device, wherein the stirring / drying device is a single device. And the drying process can be continuously performed to produce the molding material particles for the soundproofing plate, so that the number of devices in the entire facility is reduced and the configuration as the facility is simplified.

Moreover, according to the production equipment of the present invention, since the drying is performed while stirring and kneading the raw material particles during the production, the surface of the raw material particles having a complicated shape can be quickly dried, and the production time can be shortened. is there. In addition, kneading
Since the stirring in the stirring device is performed by the stirring blade provided in the kneading / stirring device, it is possible to prevent the material particles from becoming coarse particles by applying a shearing force between the material particles during the stirring. In addition, the sieving machine is not required, and the equipment is simpler and less expensive. Also, if only the surface of the water glass layer of the material particles is dried during the production of the material particles in the stirring / drying device, the bonding of the material particles can be performed when the material particles are subsequently transferred or put into a mold. In addition to the above, it is possible to easily combine the material particles with each other due to the viscosity of the water contained in the water glass layer during the pressure molding, and there is no need for a coating layer adjustment step device that adds water to the material particles and kneads them. Can be. Therefore, the omission of the apparatus due to the multi-function of the stirring / drying apparatus and the omission of unnecessary steps can reduce the size of the entire manufacturing equipment, reduce the installation space, and reduce the operating cost of the manufacturing equipment. Since the number of manual operations is reduced, the production efficiency is improved. Further, maintenance of the manufacturing equipment is also facilitated.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing one embodiment of a production facility of the present invention.

FIG. 2 is a schematic side view of the apparatus of FIG.

FIG. 3 is a schematic longitudinal sectional view showing one embodiment of a stirring / drying device according to the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is an operation explanatory view showing charging of a molding material particle into a mold in an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Manufacturing equipment of a soundproofing board 20 Stirring / drying device 21 Outer shell 23 Discharge port 25 Stirrer blade 28 Hot air blowing pipe 40 Pressure forming device 41 Rotary table 42 Formwork 47 Press machine 60 Firing device

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI C04B 33/32 C04B 33/32 K

Claims (1)

[Claims] An agitating / drying device for producing molding material particles having both a stirring function for kneading irregular shaped ceramic particles, glass powder and water glass, and a function for supplying hot air during stirring; A sound-insulating plate manufacturing facility comprising: a pressure-forming device for putting molding material particles into a mold and press-forming at a required pressure; and a firing device for firing the pressed product to form a required sound-insulating plate.