JPS63166502A - Frame body for molded form - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is applicable to the ceramic industry and the civil engineering and construction fields, where monolithic refractories, mortar, concrete, etc. are poured into linings, walls, floors, or structures (hereinafter referred to as In the present invention, cores, partition frames, and wall frames (hereinafter collectively referred to as frames) used in constructing molded products (hereinafter collectively referred to as molded products)
Regarding.

[Conventional technology]

A frame made of wood, metal plate, or plastic material is used to construct various molded structures by pouring monolithic refractories or concrete into a space surrounded by a frame. In recent years, extensible rubber tubes, balloon bodies, mat bodies, etc. (hereinafter collectively referred to as bag-shaped bodies in the present invention) have been used as frame bodies, as it requires a lot of manpower to carry in, assemble, remove, repair, etc. A method of using it as a method has been proposed.

For example, the invention described in Japanese Patent Publication No. 56-20104 (hereinafter referred to as Invention A) relates to a core configured such that the outer peripheral surface of a laminated tube forms a construction surface, and the invention is related to a core configured such that the outer circumferential surface of a laminated tube forms a construction surface. By implementing this, the frame body can be attached and detached freely, improving work efficiency and improving the operating rate of the lined container.

Furthermore, JP-A-53-4711 discloses an invention related to a core device for constructing monolithic refractories for containers (hereinafter referred to as the B invention).
is disclosed.

Invention B involves inserting an expandable and contractible flexible core into a permanently lined converter, supplying air to the core to inflate it, and creating a space for forming a wear lining between the permanent lining surface and the core surface. , is a means for constructing a wear lining by filling and solidifying a monolithic refractory material into the space.

Furthermore, JP-A No. 59-80708 discloses an invention related to a method for constructing a monolithic refractory for a pig iron car (hereinafter referred to as invention C), which, like invention B, divides a expandable core into two parts. This means is inserted into the hot metal storage main body of a mixed pig iron car, injects fluid into the core to expand it, and injects and solidifies a monolithic refractory into the gap between the core and the steel shell, and the core is made of nylon. Alternatively, a nylon sheet pasted onto a waterproof bag-like body made of rubber has been introduced.

[Problem that the invention seeks to solve]

The inventors manufactured bag-shaped bodies using rubber membranes, rubberized cloth, various plastic membranes, and membrane materials impregnated with plastics in fiber cloth, and conducted tests on various frames, and found the following. It turned out that there was a problem.

FIG. 143 is a partially cutaway schematic perspective view of an embodiment of the bag-like body 1, in which the bag-like body 1 is made by airtightly suturing or Join and compose.

2a to 2g are spacer fittings provided between the membrane bodies 1a and lb, and a predetermined space 3 is formed by the action thereof. The membranous body 1a! The 1 & semi-distance 4 between b is determined by the holding interval of the spacer fittings 28 to 2g, but the spacer fittings 2a to 2g are normally expanded by the fluid pressure, such as air pressure, in which the membrane-like bodies 1a and 1b are enclosed, so the widest interval 5 is determined. appears.

Due to the difference between this wide interval 5 and the reference interval 4 (see Fig. 3 (B)), large irregularities occur on the surfaces of the membrane-like bodies 1a and 1b, so the bag-like body 1 is When used as a core for forming a monolithic refractory lining for a refractory container, for example, a ladle 6, the surface 7a of the monolithic refractory 7 becomes an uneven surface corresponding to the irregularities, so damage must be made uniform. This would defeat the purpose of the lining method.

In FIG. 4, reference numeral 8 denotes a rigid support frame plate for supporting the bag-like body 1, and an arm 1O fixed to a core support shaft 9.
111 and the bottom frame plate 12.

In Fig. 4, for convenience of explanation, the frame plate 8 is located to the right from the center line Y-Y.
The figure shows the situation in which the monolithic refractory 7 is injected using the bag-like body l supported by the bag-like body l, and the situation in which the bag-like body l is removed is shown on the left.

Next, as a result of experimenting with invention B, the inventors of the present invention found that, as in invention A, solidified monolithic refractories were used, that is, the surface of the wear lining was uneven and the thickness of the lining was uniform.
In addition, it was found that it was quite difficult to form it to the desired thickness, and that it was disadvantageous from an economic standpoint to achieve the objective by increasing the reinforcing frame plate.

Additionally, as a result of experimenting with the invention C, a reinforcing framework was constructed inside the bag-like body (the core in the invention C) to counter the buoyancy and pressing force acting on the bag-like body due to the injected monolithic refractory. It was found that it was possible to construct a wear lining without any problems, but it was found that there was room for further improvement in equalizing the lining thickness. In other words, the reference interval 4 mentioned above
The dimensional difference between the distance 5 and the distance 5 is 1.2 to 1.4 times, and there is a problem in that considerable unevenness remains on the surface of the wear lining.

The present invention relates to an improvement of the bag-like body l, and provides a frame for a molded product that can form a lining with substantially uniform thickness or a desired thickness without causing any unevenness or with very slight unevenness in the lining. The purpose is to provide

[Means for Solving the Problems] In order to achieve the above-mentioned object, the inventors of the present invention have conducted various studies on frames for plastic products, and as a result, they have developed a method in which hard plate-like pieces are attached to the surface of a bag-like body that can be expanded and contracted. We have succeeded in solving the above-mentioned problems and achieving the desired purpose by devising a frame for plastic objects that is coated with a plastic material.

[Function] The structure and function of the present invention will be explained below.

FIG. 5 shows through holes 14a, +4b, 14c, 14d in the thickness direction of a square rigid plate-like piece 13 made of a plastic thin plate and perpendicular to each other.
Steel wires 15a, 15b and 15c, 15d, which are resistant to bending and wear, are provided in the through holes 14a to 14d.
FIG. 3 is a perspective view showing a state in which the

The key point of the present invention is to form a cotton-like object using such hard plate-like pieces 13 as units and adhere it to the surface of the bag-like body, as shown in FIGS. 6 to 8. Figure 3 shows schematic plan views of different cotton-like objects;

In FIG. 6, reference numeral 16 denotes a cross-shaped plastic hard plate piece, which is combined and connected to the square hard plate piece 13 by a steel wire 15a. For convenience of explanation, the reference numeral for one piece of Ike's hard plate is omitted, but this also applies to the following FIGS. 7 and 8.

Next, FIG. 7 shows the square hard plate top piece 13 configured in a checkered pattern, and FIG. 8 shows a hexagonal hard plate top piece 17.
An example of knitting is shown below.

Therefore, when constructing a cotton-like object, the aforementioned unit hard plate-like pieces 13, 16, 17, etc. may slide between the steel wires and the mutual positional relationship may deviate from the original normal position. In such cases, it is best to use a clamp to secure the steel wire and the hard plate to each other, or to create joints in the steel wire to prevent movement.

Further, instead of the above-mentioned steel wire, it is possible to use threads or strings made of plastics, twisted threads, or other organic or inorganic fibers.

Since the tension applied to the steel wire is extremely large, it is desirable that the tensile strength be equal to or higher than that of the steel wire, and that the wire should have enough flexibility to follow the expansion and contraction of the bag-shaped body. It is preferable to use plastic materials such as vinyl and polyethylene that can form hard plates, as well as metal plates such as aluminum plates, titanium plates, and stainless steel plates, as the hard plate top piece. is possible.

Next, the process of binding the above-mentioned hard plate top piece and attaching it to the surface of the bag-like body will be explained with reference to FIG.

The hard plate upper pieces 17 are sewn together to form a cylindrical m18,
Next, the bag-like body 1, which has been inflated into a cylindrical shape by being supplied with air through the supply/exhaust pipe 21, is placed on the work floor 22, and the wires 19a, 19 are lifted by a lifting machine such as a crane (not shown).
b. Hook 20a.

The net 18 is suspended via the net 20b, and then the m418 is suspended so as to wrap around the bag-like body 1. However, the net 18 is preliminarily fitted with monolithic refractory injection plug mounting flanges 23a and 23b.
(hereinafter referred to as flanges) and vibrator-rod insertion plug mounting flanges 24a, 24b (hereinafter referred to as flanges), while monolithic refractory injection plugs 25a, 25b (hereinafter referred to as plugs) are attached to the bag-like body l. Since the pie break rod insertion plugs 26a and 26b (hereinafter referred to as plugs) are attached, the flanges 23a and 2
ab, plug bodies 25a, 25b and flanges 24a, 24
When the plugs 26a and 25b are engaged with each other by suitable means such as screwing, adhesion, and welding, the net 18 is attached to the bag l and follows the expansion and contraction of the bag l. Net 18
The material can be freely deformed, and the upper pieces of the hard plate can also be tied together to form a band-like object or a cloth-like object, which can be attached to a bag-like object in a contracted state.

In this way, the hard plate upper piece is bound in a cotton-like manner, and although it is not directly adhered to the bag-like body, it is partially fixed to the bag-like body and surrounds the bag-like body, and the bag-like body is partially attached to the bag-like body and surrounded by the bag-like body. In the present invention, the rigid plate is attached so that when the shaped body expands, it becomes a rigid body like a trowel, and when it contracts, it can freely change its shape and become deflated.

It is said that the pieces are attached like cotton.

Next, the structures of the flange 23a and the stopper 25a will be explained.

FIG. 1O shows a hard plate top piece 13 attached to a bag-like body l consisting of membrane-like bodies 1a and 1b, and a flange 23a and a plug body 25a.
This is a partial cross-sectional view showing the state in which the plug body 25a is attached to the bobbin body 27, the tightening flange 28, the check valve body 29, and the tightening port 30a.

30b. In this example, the check valve body 29 includes three flexible valves 29a, 29b, and 29C, and a protective sheet 31 is fixed to the outside of the bag-like body l, and a hard plate top piece is attached to the outside of the bag-like body l. 13 is applied from above the protective sheet 31.

As described above, the use of an appropriate protective film, sheet, etc. to protect the bag-like body 1 does not impede the use of the frame for a plastic product of the present invention.

Now, the bobbin body 27 is inserted into the through hole 1c of the bag-like body l, and screwed on with the tightening flange 28 and the tightening poles l-30a and 30b, and then the through hole 31a of the protective sheet 31 and the check valve body 29 are screwed together. The flange 23a is attached to the bobbin body 27 using the built-in bolds 32a, 321), and then air is blown into the bag-like body 1 to inflate it, thereby completing the preparation for injection of the monolithic refractory.

Then, using the press-in nozzle 33, the monolithic refractory 36 is injected from the inside 34 of the furnace into the gap 35 between the shell (not shown) and the hard plate top piece 3, as shown in FIG.

At this time, since the flexible valves 29a to 29c of the check valve body 29 have the function of opening only on the injection side, the injection nozzle 33
There is no risk that the monolithic refractory 36 will flow back after being pulled out.

Further, when pouring the monolithic refractory 36, a pie-break rod is used to apply vibration to the monolithic refractory 36 in order to increase the density and make it uniform. In this case, a slightly smaller insertion plug having the same configuration as in FIGS. 10 and 11 is used, but is not shown.

Next, FIG. 1 is a front view of the frame 37 for a plastic product according to the present invention, showing the monolithic refractory injection plug mounting flange 23c and the piebreak-rod insertion plug mounting flange 24c.
The flanges represented by are arranged in an appropriate number and at appropriate intervals in consideration of the injection amount and lining dimensions.

Next, FIG. 2 shows an example in which a core mold building frame 37 (hereinafter simply referred to as the frame) is attached and a monolithic refractory 36 is injected.

In FIG. 2, the contracted frame 37 is inserted into the pigtail receiving port 40 of the pig iron mixer 38, and the frame 37 is inserted from the air supply device (not shown).
After supplying compressed air to 7 and inflating it, the support frame plate 41,
The frame body 37 is supported by the support column 42, and then the monolithic refractory 36 is injected into the steel skin 39 and the frame body 37 from the plug bodies 25c to 25f using the injection nozzle described above, and the plug bodies 26c to 2
This is a schematic vertical cross-sectional view showing the situation after the pie-break rod is inserted into the monolithic refractory 36 from 6f and solidified by vibration. The frame plate 41 is removed, the frame body 37 is evacuated, and the contracted frame body 37 is pulled out from the pigtail receiving port 40.

In addition to using spacer bricks between the iron skin 39 and the frame body 37, there are also cases where only wear lining is performed after permanent lining (sometimes using bricks).

In addition, in FIG. 2, 43a and 43b are end plates that are used by being attached to the support frame plate 41, but there is little practical benefit even if the frame 37 is extended to this end plate portion, so the end plates are made of metal. It is preferred to use a veneer, but this is not a limiting condition in the present invention.

As mentioned above, the frame according to the present invention can be freely contracted and expanded, and when expanded, it acts as a rigid body against partial or total pressure, so when used as a core of a molded product, it can be attached and detached freely. Therefore, it can withstand repeated use and is particularly advantageous for use as a frame for parts that are generally difficult to mold.

〔Example〕

Using the frame according to the present invention, wear lining a 250 ton pig iron mixer car was constructed using high alumina castable refractory material, and it was confirmed that extremely good lining could be achieved with a difference in unevenness of the lining surface of 20 mm+ or less.

[Effects of the Invention] The frame according to the present invention is expandable and contractible, but has extremely high rigidity when expanded, so it can be used not only for monolithic refractory linings, but also for the production of molded structures using mortar or concrete. It has excellent functions as

In addition, it can be used repeatedly, is economical, and has high practical effects such as easy handling.

[Brief explanation of the drawing]

Fig. 1 is a front view of the frame according to the present invention, Fig. 2 is a schematic vertical cross-sectional view showing a situation where the frame according to the present invention is used to provide fireproof lining for a pig iron mixer car, and Fig. 3 (A ) is a partially cutaway schematic perspective view of a bag-like body, FIG. 3 (B) is an explanatory diagram of standard spacing, FIG. Fig. 5 is an explanatory diagram of the spelling state of the hard plate top piece, Fig. 'J46, Fig. 7, and Fig. 8 are partial schematic plan views of the fibrous object according to the present invention, and Fig. 9 is a membrane-like dense structure on the bag-like body. Fig. 10 is a partial sectional view showing the structure of the flange and plug body, and Fig. 11 is an explanatory drawing showing the state of injection of monolithic refractories using an injection nozzle. . [Explanation of symbols] 1--Bag-like body, 1a, 1b--Membrane-like body, 2a to 2g---1--Spacer metal fitting, 3-.
・-Space, 4.--..-Reference interval, 5--.1 interval, 6--.. Ladle, 7.--.. Monolithic refractory, 7a.-- 1111 surface, 8... Rigid support frame plate, 9... Core support shaft, 10.11...
...Arm, 12...-Bottom plate, 13...-Hard plate-shaped piece, 14a-14d-1...-Through hole, 15
a~15d・------Steel wire, 16-・
-・-Plastic hard plate top piece, 17...
Hexagonal hard plate piece, 18...-wire, 19a, 19
b-,,,-lifting wire, 20 a, 20 b
--...Hook, 21--...--Supply/exhaust pipe, 22...
-Working floor, 23a, 23b・----1 Monolithic refractory injection plug body mounting flange, 24a, 24b・-11---
Vibrator rod insertion plug mounting flange, 25a,
25b--Unshaped refractory injection plug body, 26a, 26
b-・-Vibrator rod insertion plug body, 27-・-・
-Bobbin body, 28-...Tightening is done by flange, 29
---Check valve body, 29a to 29c--Flexible valve,
30 a, 30 b - one tightening vault, 31 ----
・Protective sheet, 31a-11 through hole, 32a, 32
b-=built-in bold, 33--injection nozzle, 34-
...Inner side, 35-111 gap, 36-- Monolithic refractory, 37-- Frame for plastic material, 38--
--・Pig-mixing car, 39...--iron skin, 40-----1.Pigtail receiving port, 41----1 Support frame plate, 42--Support column, 4
3a, 43b...--- End plate Fig. 7 Fig. 8

Claims (1)

[Claims] (1) A frame for a molded article, characterized in that it is formed by covering the surface of a bag-like body that can be expanded and contracted with a hard plate-like piece in a box shape.