JP3434604B2 - Manufacturing equipment for extruded plate and extruded plate with reinforcement - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for continuously producing a building material such as an outer wall material, a partition wall and a floor by using a hydraulic material such as cement. The present invention relates to a method and a device for continuously manufacturing an extruded sheet containing a reinforcing material, which is used as a structural material, by incorporating a reinforcing material such as a steel pipe.

[0002]

2. Description of the Related Art Conventionally, when continuously extruding hydraulic materials such as cement and gypsum, since the pressure transmission between the materials has a bad property, a molding method and a device used therefor have been studied. There is. In particular, since these molded products have low bending strength, it has been attempted to insert a reinforcing bar, a wire mesh or the like at the time of extrusion in order to reinforce the strength. In a manufacturing apparatus equipped with a conventional extrusion molding machine, a raw plate obtained by extruding a hydraulic material from a mold on the extension of the central axis of the extrusion molding machine is received by a roller conveyor, a belt conveyor, etc., and then a raw plate is received on a receiving iron plate. It has a manufacturing line that is mounted and cured for curing. For this reason, since there is an extruder on the opposite side of the extrusion direction on the axis from which the raw plate is extruded, a freely bendable wire or piano wire can be introduced into the raw plate as a reinforcing material, but a reinforcing bar or reinforcing bar mesh is introduced. I couldn't. Also,
Although it is possible to bend and introduce the wire mesh, if the wire is forcibly guided by the introduction pipe and bent, the resistance increases and catches, making extrusion impossible. In addition, it is difficult to restore the deformed mesh inside the base,
Almost impossible.

The following is an example of a conventional manufacturing technique proposed so as to be able to introduce the reinforcing bar and the reinforcing bar mesh which are difficult to bend. For example, Japanese Patent Publication No. 53-13208
The method of introducing the reinforcing material into the extruded fluidized raw material layer described in Japanese Patent Laid-Open Publication No. 2003-121242 is to extrude the raw material using two extruders, and the press-fitting pipe provided at the confluence of the pressure feeding passages has a Y-shaped feeding passage. In addition, the reinforcing material is introduced through an insertion port provided in the press-fitting tube in advance. In this method, since two extruders are used, it is difficult to balance the extrusion amounts thereof, and it is also difficult to hold the reinforcing material after insertion in a constant position during traveling. Further, Japanese Patent Application Laid-Open No. 1-166908 discloses a method of using a single extruder, in which a main passage and a sub-passage are provided in a die, and a reinforcing material is inserted at a boundary portion where the main passage and the sub-passage merge in the die. However, the flow of hydraulic material in the mold becomes complicated, the manufacturing cost of the mold is high, and the raw plate is extruded at first, but as the extrusion continues, stagnation occurs in the flow in the die However, that portion is hardened and thus cannot be extruded, which is not practical. Furthermore, JP-A-4-1-1
In the 28006 publication, an inverted Y-shaped connecting pipe is provided at the outlet of one extruder, and it is divided into two curved connecting pipes at the ends thereof.
It has been devised that the flow rate is regulated by a die that regulates the flow rate of a fluid material such as a hydraulic material flowing in these curved connecting pipes, and a method of inserting a reinforcing material at a position where these flow merging points is described. However, when the two curved connecting pipes are bent twice like a crank and an S curve, the flow of the hydraulic material becomes complicated, resulting in a complicated flow of the hydraulic material.
As in the case of 908 publication, the raw plate is initially pushed out,
As the extrusion continues, stagnation occurs in the flow path,
Since that portion is hardened, there is a problem that extrusion becomes impossible.

Further, in Japanese Patent Laid-Open No. 62-39203, a raw plate made of a hydraulic material is extruded into two upper and lower layers, and the extruded molded product is once pulled up and down to separate a reinforcing material (or a reinforcing material supplying means) between them. After that, a method of sandwiching the reinforcing material between the upper and lower green plates and crimping is described. JP 62-3920
No. 4 discloses a similar technique except that a reinforcing material sandwiched between green plates is coated with a hydraulic composition. The technique described in JP-A-63-216709 describes a technique in which a reinforcing material is sandwiched between upper and lower green plates, cut into a prescribed length, and then the upper and lower green plates are pressure bonded. Further, in JP-A-1-101110, a mold is divided into upper and lower parts, and a reinforcing material is inserted between two upper and lower raw plates that are divided and extruded from this space. The sandwiching technique is described. However, this method is not suitable for the production of hollow products because it involves the step of crimping the green plate and the reinforcing material. Furthermore, the process such as raw plate division and crimping process becomes complicated, and the equipment cost increases.

Japanese Unexamined Patent Publication No. 54-14424 discloses a molding die portion of an extruder in which a hydraulic composition is compressed into a laminar flow in the direction of the die from around the barrel portion. A method of supplying a continuous reinforcing material and crimping the reinforcing material to the surface layer portion is described. However, in this method, since the reinforcing material is pressure-bonded to the front and back surfaces of the green plate, the shape that can be manufactured is limited. JP-A-58-183209
The official gazette describes a method of inserting a reinforcing material from a reinforcing material insertion hole provided in the rear part of the back of a press-fitting tapered tube that is connected to the rear barrel of the extruder. in this way,
It is necessary to make two curved parts of the press-fit taper pipe,
Furthermore, there is a drawback that the length of the curved portion is long and the inclination tends to be steep, which disturbs the flow of the fluid raw material such as a hydraulic material. In addition, there is a problem that the rear extruder located on the axis of the green plate hinders the supply of the reinforcing material.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, without changing the currently used extruder, and without a large capital investment.
An object of the present invention is to provide an extruded plate and an apparatus for manufacturing an extruded plate containing a reinforcing material, which are not restricted in shape and size.

[0007]

[Means for Solving the Problems] Cement-based hydraulic materials have the property of poor pressure transmission between materials, so bend a squeezed tube with a die attached to an extruder for extruding these materials. In some cases, only in one place. In addition, when the throttle pipe is bent, the curvature of the throttle pipe is gently curved so that stagnation does not occur due to the flow of the fluid material such as hydraulic material inside the bent throttle pipe. , The angle formed by its central axis) is up to 90 °. Although the bending degree is small it is good of course, Oh and and even appropriate range of 50 ° to 90 ° because the insertion side of the clearance is required reinforcements
It

In consideration of the above circumstances, according to the present invention, a manufacturing apparatus provided with the following extrusion molding machine, that is, (1) an extrusion molding machine in which a throttle pipe and a mold are sequentially attached to the tip of an extrusion barrel, The throttle pipe is curved, the angle formed by the central axes of the throttle pipe at the inlet and the outlet thereof is in the range of 50 ° to 90 °, and the throttle pipe has a discharge cross-sectional area as it goes to the outer diameter side of the curved portion. An apparatus for manufacturing an extrusion-molded plate, comprising an extrusion-molding machine, characterized in that (2) In an extrusion molding machine in which a throttle pipe and a die are sequentially attached to the tip of an extrusion barrel, the throttle pipe is curved, and the angle formed by the central axes of the throttle pipe at its inlet and outlet is 50 ° to 90 °. And having an introduction pipe for introducing a reinforcing material to the outer diameter side of the curved portion, the introduction pipe being introduced to the end point of the constricted pipe curved portion, and the constricted pipe being outside the curved portion. The conventional problems have been solved by an extrusion-molded plate manufacturing apparatus equipped with an extrusion molding machine, which is characterized in that the discharge cross-sectional area is increased toward the radial side.

As already described above, when the throttle tube is bent, it is preferable that the discharge area on the inner diameter side of the curved portion of the throttle tube is small and the discharge area on the outer diameter side is large. Further, the hydraulic material under pressure has a property that it is difficult for the hydraulic material to flow back into the hole (introduction pipe) opposite to the extrusion direction. This is because the material that is going to flow backwards is pulled by the material that advances in the extrusion direction.
Of course, there is no backflow at all, but the backing material is cleaned by the reinforcing material. Furthermore, it is preferable that the introduction pipe is straight without bending. Further, the material extruding pressure is the same vertically and horizontally, and it is necessary to introduce an introducing pipe up to a point where the extruding directions are the same.

[0010]

The operation of the present invention will be described below with reference to the embodiment shown in FIG. The extruder 6 and the first throttle tube 5 are the same as the conventional ones. The curved throttle pipe 3 (hereinafter, referred to as an L-shaped throttle pipe) is connected to the first throttle pipe 5, and the die 2 is further connected to the tip thereof. The L-shaped throttle tube 3 and the mold 2 are manufactured according to the shape of the extruded plate to be manufactured. An L-shaped throttle pipe 3 has a guide pipe 4 of a reinforcing material introduced from the outer diameter side of the curved portion. The introduction pipe 4 is used after being replaced depending on the shape of the reinforcing material. In front of the tip mold 2, a raw plate receiving roller 8 for receiving an extruded plate (hereinafter referred to as a raw plate) is installed. Although not shown, the mold is provided with inner balls for molding the hollow portion.

The hydraulic material extruded from the extruder is the first
It flows through the throttle pipe 5 to the L-shaped throttle pipe 3. The L-shaped throttle tube 3 has a discharge area that increases from the inner diameter side to the outer diameter side of the curved portion, the material flow on the inner diameter side is small, the material flow path is short, and the discharge amount is small, but the discharge amount is small. However, the flow of the material on the outer diameter side is large, the flow path of the material is long, and although it is slow, the discharge amount is large. Further, the L-shaped throttle tube 3 gradually approaches the shape of the mold 2 in cross section as it comes to the outlet, and becomes the mold shape at the outlet. Furthermore, inside the L-shaped throttle tube 3, there is a flow adjustment fitting 9,
A flow adjusting bolt 10 is provided at the tip thereof to adjust the amount of material discharged. For example, if the discharge amount on the outer diameter side is large, the discharge amount is adjusted by inserting the flow adjustment bolt 10 in that portion. As a result, the discharge amount on the inner diameter side and the outer diameter side at the outlet of the L-shaped throttle pipe 3 becomes constant, the discharge amount to the mold 2 becomes constant, and a stable raw plate is extruded from the tip mold 2. Although not shown, the mold 2 is provided with a middle ball for molding a hollow shape.

The reinforcing material introducing tube is introduced from the outer diameter side of the curved portion of the L-shaped throttle tube 3. The introduction pipe is adapted to the shape of the reinforcing material to be introduced, and is inserted straight without bending. The tip of the introduction tube is a point where the material flow of the L-shaped throttle tube 3 has completely changed, and the pressures of the material on the upper, lower, left, and right become the same, and the extrusion direction of the material becomes the same as the advancing direction of the reinforcing material. Introduce its tip until. This allows the stiffener to be pulled smoothly at the rate at which the material is extruded. Examples of the reinforcing material that can be introduced include a wire, a piano wire, a reinforcing bar, a reinforcing bar mesh, and a steel pipe. Further, in the present invention, since the materials at the outlet of the introduction pipe have a good balance, it is possible to introduce a weak material such as a resin mesh or a metal lath. At this time, it is possible to more surely introduce the guides by diverging the upper and lower plates in the introducing pipe. The green plate into which the reinforcing material has been introduced in this way is extruded from the mold 2, and is received by the green plate receiving roller 8 and manufactured by a conventional method such as cutting, temporary curing, autoclave curing or the like. Furthermore, in the present invention, since there is no extruder on the axis behind the raw plate, it is also possible to directly receive the raw plate extruded from the tip spinner on the iron plate, so that a conventional roller conveyor or belt conveyor. It is possible to prevent the raw plate from being deformed by moving the. Further, it is also possible to introduce a structure in which a mounting metal fitting for a fastening metal fitting is attached to a structural material.

[0013]

According to the present invention, an extruded plate containing a reinforcing material, which is used as a structural material by introducing a reinforcing material with a conventional extruder, is gently curved, and a throttle tube is considered in which the flow rate is adjusted according to the curved diameter. The extruder of the present invention using can be easily produced without using special equipment.

[Brief description of drawings]

FIG. 1 is a plan view of an extrusion unit of the present invention.

FIG. 2 is a perspective view showing a flow of raw materials in an L-shaped throttle tube and a tip mold.

FIG. 3 is a view showing an example of an extruded plate having reinforcing bars as reinforcing members.

FIG. 4 is a view showing an example of an extruded plate having a reinforcing mesh as a reinforcing material.

FIG. 5 is a view showing an example of an extruded plate into which a steel pipe is inserted as a reinforcing material.

[Explanation of symbols]

1 raw board 2 mold 3 L type throttle 4 Reinforcement material introduction pipe 5 First throttle 6 Extruder 7 rebar mesh 8 roller conveyor 9 Flow adjustment metal fittings 10 Flow adjustment bolt 11 Reinforced forming plate 12 Molded plate with rebar mesh 13 Steel Pipe Formed Plate

Claims (2)

(57) [Claims] 1. A throttling tube and a mold are sequentially installed at the tip of an extrusion barrel.
In the attached extruder, the throttle pipe is curved,
The angle between the central axis of the throttle at the inlet and the outlet is 50 ° to 9
It is in the range of 0 °, and the throttle tube is installed on the outer diameter side of the bending portion.
Extrusion characterized by increasing the discharge cross-sectional area
Extruded plate manufacturing device equipped with a molding machine. 2. A throttling tube and a mold are sequentially installed at the tip of the extrusion barrel.
In the attached extruder, the throttle pipe is curved,
The angle between the central axis of the throttle at the inlet and the outlet is 50 ° to 9
It is in the range of 0 °, and a reinforcing material is introduced on the outer diameter side of the curved portion.
Has an introduction pipe, and the introduction pipe is an end point of the squeezing pipe bending portion.
Is introduced, and the throttle pipe goes to the outer diameter side of the curved portion.
Therefore, extrusion molding characterized by increasing discharge cross-sectional area
Extruded plate manufacturing equipment equipped with a machine.