JPH08164510A - Extrusion molding apparatus for inserting rod-shaped reinforcing material - Google Patents

Abstract

PURPOSE: To stably and efficiently produce a molding having high strength by arranging a plate having a plurality of guide pipes into which rods are introduced built therein in a mold and allowing the leading end parts of the guide pipes to protrude from the plate and adjusting the positions of them so as to set the leading end position thereof to the throttle part of the mold. CONSTITUTION: The guide pipe built-in plate 14 integrally formed along with the raw material flow prescribing die 13 provided to the rear part in a mold main body 6 protects guide pipes 15 provided so as to keep the straight passages of rod reinforcing materials 16 to enable the stable insertion of them so that the guide pipes 15 are not bent within the flow unstable region where a raw material flows. The leading end positions of the guide pipes 15 are set to the vicinity of a top die, that is, the throttle part of a mold but set so as to be capable of finely adjusting the optimum position at every mold in consideration to rod stable insertion properties and close contact properties. Therefore, the guide pipes 15 are slid before or behind a raw material flow direction to be fixed to the guide pipe fixing plate provided behind the guide pipe built-in plate 14 so as to be capable of being adjusted and fixed at the optimum position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a ceramic composition such as a cement composition and an extrudable material such as a synthetic resin such as a plastic, which is preliminarily made of metal, glass fiber, carbon fiber or the like in advance. The present invention relates to an extruding material forming apparatus in which a rod-shaped reinforcing material formed in a desired shape is put and at the same time extrusion molding is possible.

[0002]

2. Description of the Related Art Outer wall panels used as outer wall materials for office buildings and houses are mainly cast.
It is manufactured by press molding and extrusion molding, but when these technologies are evaluated, the extrusion molding method is superior in terms of labor saving, incorporation of reinforcing bars, and denseness of material. When using this panel as the outer wall of a high-rise building, the strength from the wind pressure surface is increased, and the reinforcing material insertion technology is used to improve the construction efficiency (m ² /person.h), so the current 600 mm width, 900 mm width, 1200 mm width, and further Is required to develop technology that can be broadened further.

A method for inserting a reinforcing material into an extruded material is disclosed in JP-A-50-84620, JP-B-53-13208, and JP-A-4-128006. For example, Japanese Unexamined Patent Publication No. 50-84620 discloses a method of introducing a raw material into a mold with a single raw material introducing pipe and inserting a rod-shaped reinforcing material into the molded body. In this method, the raw material is supplied only from above, and a guide pipe for inserting a rod is provided in a direction orthogonal to this direction.A rod reinforcing material is passed through the guide pipe and extruded while supplying the reinforcing material. Yes, the lower side is difficult to fit in with the raw material.

Further, when there are a plurality of reinforcing members on the upper and lower sides, a downward force is applied to the reinforcing members in the process of spreading the raw material inside the mold, so that the insertion position is pushed down and the guide pipe itself is also curved. This increases the contact resistance between the bent portion of the pipe and the rod, hinders the smooth supply of the rod, and at the same time causes the deviation and fluctuation from the rod insertion target position in the cross section of the molded body.

As a technique for widening the width, a die design technique capable of manufacturing a wide material is disclosed in Japanese Patent Publication No. 53-13208 and Japanese Patent Laid-Open No. 4-128006. This is a method in which a raw material is introduced from both side surfaces of a rear portion of a mold and is recombined into the inside through a cone-shaped flow regulating die to produce an extrusion molded body. This method is characterized in that the distance required for the die depth for the raw material to diffuse into the die is short. Further, this method is an excellent method as a method for producing a wide material containing a reinforcing material, since there is a margin in the rear part of the mold for introducing the raw material from both side surfaces of the mold, and a reinforcing material inserting means can be easily provided.
These reinforcing material insertion extrusion molding methods describe a manufacturing method using a framed reinforcing material as the type of the reinforcing material, but do not disclose a rod-shaped (rod-shaped) reinforcing material.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides an extrusion molding die apparatus capable of stably and efficiently manufacturing a molded product having high strength by inserting a rod (rod-shaped) reinforcing material into a wide molded product. It is to be.

[0007]

According to the present invention, extrusion raw materials are introduced from both side surfaces of a mold, and both extrusion raw materials are squeezed through the extrusion raw material flow control die provided inside the mold. In the extrusion molding apparatus in which the rod-shaped reinforcing material is simultaneously inserted in the same flow direction as the extrusion raw material while flowing toward the section, a plate containing a plurality of guide pipes for introducing rods is installed in the mold, An extrusion molding apparatus for inserting a rod-shaped reinforcing material, characterized in that the tip end portion of the guide pipe is projected from the plate, and the position of the tip end portion of the guide pipe is adjusted and fixed so as to be the throttle portion of the mold. .

[0008]

The structure and operation of the present invention will be described in detail below with reference to an embodiment shown in FIGS. FIG. 1 is a perspective view showing an extrusion molding apparatus equipped with the plate of the present invention. The raw material entered from the raw material receiving port 1 of the extruder is given a thrust by the raw material pressure feeding screw 4 of the extruder 2, passes through the raw material branch pipe 5 of the extrusion raw material, and enters the raw material introducing port 5-1 of the mold body 6. 5
-2 Enter inside the mold.

The mold comprises a mold main body 6, a raw material flow adjusting choke mounting mold 9 in front of the raw material flow direction, and an outer peripheral portion restricting mold 10 and a top die 11 in front of the mold main body 6, which are integrally formed. There is. The inner area of the top die 11 is reduced to about 1/3 of the inner area of the die body 6, and the extruded body outer peripheral portion regulation die 10 forms a narrowed portion toward the die exit direction. . A raw material flow control die 13 and a plate 14 with a built-in guide pipe integrally formed with the raw material flow control die 13 are provided on the rear side inside the mold body 6.

The raw material introduced through the raw material introduction ports 5-1 and 5-2 passes through the raw material flow control die 13 and the space portion of the inner wall of the mold main body 6 and is swept toward the front of the mold to obtain a raw material flow adjusting choke. 8, through the raw material flow adjusting choke mounting die 9, through the outer periphery of the molded body regulating die 10, top die 1
Extruded body 1 given the final shape through 1 and leaving the mold
It becomes 2 and is conveyed by the molded body conveying conveyor 17 and cured.

FIG. 2 is a perspective view showing a guide pipe built-in plate 14 which houses the guide pipe 15 of the present invention.
The guide pipe built-in plate 14 has a guide pipe 15 in which a rod-shaped reinforcing member 16 is housed, and this pipe is housed in a guide pipe housing hole 15-2 provided in the guide pipe built-in plate 14. The rear portion of the plate 14 with a built-in guide pipe is integrated with a pentagonal prismatic cone-shaped flow regulating die 13 whose planar shape as viewed from above is similar to a pentagon (ABCDE). The guide pipe housing hole 15-2 of the plate 14 with a built-in guide pipe has a diameter larger than that of the guide pipe 15, and the guide pipe can be slid forward and backward in the material flow direction of the mold.

The region where the guide pipe built-in plate 14 is installed has the raw material introduction ports 5-1 and 5-in the depth direction.
Starting from 2, the tip part covers up to the raw material introduction side of the choke mounting die 9 for raw material flow adjustment, and the width direction is wide enough to leave a distance where the guide pipe built-in plate 14 can be detached from the die body. I am making it. The region where the plate 14 with a built-in guide pipe exists is a diffusion region where the raw material spreads in the width direction, and the tip portion is located at a position where the raw material is completely spread and the raw material has a uniform flow velocity toward the die outlet. Equivalent to.

The rear end of the guide pipe extends to the outside of the outer wall of the mold, and as shown in FIG. 3, a guide pipe fixing plate 19 for fixing the guide pipe 15 to the outer wall of the mold,
A guide pipe fixing bolt 20 is attached.

A method of inserting the rod-shaped reinforcing material using the present invention will be described. In order to exhibit the strength of the molded body, it is necessary to insert the rod-shaped reinforcing material 16 into the target position of the extruded body 12. For this purpose, it is necessary to secure a straight passage from the rear part of the mold toward the front and to bring the rod-shaped reinforcing material and the raw material into close contact with each other.

The securing of the straight passage is achieved by providing a straight guide pipe 15 and passing a rod-shaped reinforcing member 16 through the guide pipe 15. In the present invention, the guide pipe 15 is further protected by the guide pipe built-in plate 14 so that the guide pipe 15 does not bend even in an unstable region where the raw material flows. Therefore, the straight path of the rod-shaped reinforcing member 16 can be secured, and stable rod insertion can be performed.

Next, the close contact between the raw material and the rod-shaped reinforcing member 16 is quickly achieved by positioning the tip end of the guide pipe 15 at the narrowed portion of the mold. That is, since the inner cross-sectional area of the outer peripheral portion regulation die 10 is narrowed to about 1/3 of the cross-sectional area of the inlet, the raw material is compressed here and the raw material flow pressure is increased. The flow of the raw material in the width direction of the mold is being completed here, and the gap of the rod-shaped reinforcing material 16 coming out from the guide pipe 15 at this position is quickly filled with this high raw material pressure, and the raw material is rod-shaped. The reinforcing material 16 is wrapped around and firmly adhered.

The tip position of the guide pipe is determined by the adhesion between the raw material and the rod and the stable insertability of the rod. The optimum position is before the end of the die drawing after the choke for adjusting the flow rate, and the process in which the raw material is compressed. It is inside. That is, when the tip end position is too close to the inlet of the outer peripheral portion regulation die 10, the time for the raw material to fill the periphery of the rod becomes short, and the adhesion between the rod and the raw material deteriorates.

On the contrary, when the tip position of the guide pipe 15 is near the inlet of the raw material flow adjusting choke 8, the high pressure of the raw material is applied to the tip of the guide pipe 15 and the rod-shaped reinforcing material in the guide pipe 15 in the atmospheric pressure state. The force for pushing the tip end portion of the rod 16 back into the pipe, that is, to the atmosphere side becomes strong, and the rod-shaped reinforcing member 16 cannot be stably inserted into the extrusion molded body 12. Therefore, the tip end position of the guide pipe is in the vicinity of the top die 11, that is, the squeezing portion of the mold, but the optimum position is preferably a mechanism capable of finely adjusting the optimum position for each mold in consideration of rod stable insertability and adhesion. .

Therefore, the tip end of the guide pipe 15 can be slid forward and backward in the raw material flow direction, so that the guide pipe fixing plate 19 at the rear of the guide pipe built-in plate 14 can be adjusted and fixed at a desired position. I was able to fix it with 20. With this structure, the guide pipe 15 can be moved forward and backward of the plate 14 with a built-in guide pipe as needed, and the tip of the guide pipe 15 can be adjusted and fixed to a desired position.

As a prior art method for inserting a rod-shaped reinforcing material into a molded body, comparing the present invention with the method of Japanese Patent Laid-Open No. 50-84620, it is the same that the rod is fed through a pipe. However, in the method described in the publication, since the pipe itself is exposed while the raw material is flowing and is opened at that position, the guide pipe and the reinforcing rod are easily bent.

On the other hand, in the present invention, the guide pipe 15 is used.
Is wrapped in the plate 14 with a built-in guide pipe to protect it, and the plate 14 with a built-in guide pipe is difficult to bend in the flow direction. It has a high structure. In addition, the plate 14 with a built-in guide pipe covers a region in which the raw material entering from the inlet flows and spreads to the center of the mold, so that the built-in guide pipe 15 does not bend and a stable rod A straight passage is secured.

The position at which the rod-shaped reinforcing member 16 is taken out from the guide pipe 15 is before the starting of the raw material flow in the above-mentioned publication, and stable insertion is difficult, whereas the present invention stabilizes the raw material flow. Immediately before the molding area, that is, near the inlet of the top die 11 of the mold, where there is no fluctuation in the raw material flow, the rod-shaped reinforcing material 16 is taken out from the guide pipe 15, and the gap between the guide pipe 15 and the rod-shaped reinforcing material 16 is By rapidly filling with a high raw material pressure, good adhesion with the raw material can be secured. The guide pipe built-in plate of the present invention has two upper and lower stages as shown in FIG. 4, so that two-stage rod-shaped reinforcing members can be inserted into the molded body.

[0023]

【Example】

[Example 1] Cement and silica were used as raw materials in a weight mixing ratio of 75.
-80%, add 1-2% fiber and 1% thickener,
After mixing, water was added and kneaded, and the mixture was extruded by an extruder and introduced into a die. The size of the compact at this time is 600 mm in width and 60 in height.
It is a solid molded body of mm. The guide pipe has an outer diameter of 10 mm,
The material was SGP6A, the rod had a deformed steel wire with an outer diameter of 4.5 mm, and the guide pipe tip position was 60 mm before the top die 11 inlet, and a 600 mm wide molded body was extruded.

Example 2 The raw materials are the same as in Example 1, but examples of other extruded product shapes are shown. The raw materials at this time were 75-80% by weight of cement and silica, 1 to 2% of fiber and 1% of thickener were added and mixed, water was added and kneaded, and extruded with an extruder. Introduced into the mold. The size of the molded product at this time was a single-stage hollow molded product having a width of 600 mm and a height of 60 mm, and the plate with a built-in guide pipe shown in FIG. 2 was used. The core was fixed so that it was located between the upper and lower plates of the rod guide pipe. The guide pipe has an outer diameter of 10 mm,
The material was SGP6A, the rod had a deformed cross-section steel wire with an outer diameter of 4.5 mm, and the guide pipe tip position was 60 mm before the top die 11 inlet, and a 600 mm wide molded body was extruded.

[Embodiment 3] The raw material is the same as in Embodiment 1, but other extruded product shapes are shown. The raw materials at this time were 75-80% by weight of cement and silica, 1 to 2% of fiber and 1% of thickener were added and mixed, water was added and kneaded, and extruded with an extruder. Introduced into the mold. The size of the molded body at this time was a two-stage hollow molded body having a width of 600 mm and a height of 100 mm, and the plate with a built-in guide pipe shown in FIG. 4 was used. The core was fixed so that it was located between the top and bottom of the guide pipe built-in plate. The guide pipe had an outer diameter of 10 mm, the material was SGP6A, the rod had a carbon fiber rod having an outer diameter of 4.5 mm, and the tip of the guide pipe was 60 mm before the inlet of the top die 11, and a 600 mm wide molded body was extruded.

[Embodiment 4] The materials and molds are the same as in Embodiment 1, but the guide pipe is made of wear-resistant steel materials S45C and S45.
As a result of changing to 50C, wear during the extrusion molding process was reduced and the life of the guide pipe could be extended. Since the shape of the rod insertion tube was the same, there was no difference in the insertion position and the degree of adhesion to the molded body. Therefore, there is no problem in changing the material of the guide pipe to another material.

[Embodiment 5] The raw material and the mold are the same as those in Embodiment 1, but the rod-shaped reinforcing material is changed to glass fiber, carbon fiber, and a metal rod having an irregular cross section, and the rod-shaped reinforcing material is inserted into a target position of the molded body. We were able to. The strength of the molded body after inserting the reinforcing material varied depending on the type of the reinforcing material inserted, but the operation of inserting the rod-shaped reinforcing material was not inferior. Therefore, even if the rod-shaped reinforcing material is changed to another material, it can be inserted without any problem.

[0028]

EFFECTS OF THE INVENTION According to the present invention, various rod-shaped reinforcing members are provided on an extruded product by installing a guide pipe built-in plate and a guide pipe in a mold in which raw materials are introduced into the mold by a Y-shaped connecting pipe. It can be inserted, and a wide extrusion molded product with high strength can be produced continuously easily and stably, efficiently, and so on.

[Brief description of drawings]

FIG. 1 is a perspective view showing an extrusion molding apparatus of the present invention, showing an extruder, a guide pipe built-in plate, and a mold.

FIG. 2 is a perspective view showing the structure of a plate with a guide pipe according to the present invention.

FIG. 3 is a sectional view of a mold including a guide pipe built-in plate.

FIG. 4 is a perspective view showing another example of a guide pipe built-in plate into which two stages of rod-shaped reinforcing members can be inserted above and below the cross section of the molded body.

[Explanation of symbols]

1 Raw Material Receiving Port of Extruder 2 Extruder 3 Extruder Raw Material Pressure Feeding Screw Driving Motor 4 Raw Material Pressure Feeding Screw 5 Extruding Raw Material Branch Pipe 5-1 and 5-2 Raw Material Introduction Port to Mold 6 Mold Main Body 7 Raw Material Flow Adjusting choke Push-in depth adjusting nut 8 Raw material flow adjusting choke 9 Raw material flow adjusting choke mounting die 10 Mold outer peripheral part regulation die 11 Top die 12 Extruded body 13 Raw material flow regulating die 14 Guide pipe built-in plate 15 Guide Pipe 15-2 Guide pipe storage hole 16 Rod-shaped reinforcing material 17 Molded product conveyor 18 Pressure gauge for measuring die pressure loss 19 Guide pipe fixing plate 20 Guide pipe fixing bolt

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeki Takahashi 20-1 Shintomi, Futtsu City Nippon Steel Corporation Technical Development Division

Claims (1)

[Claims] 1. An extruding raw material is introduced from both side surfaces of a mold, and both extruding raw materials are made to flow toward a narrowed portion of the die through an extruding raw material flow control die provided inside the die, In an extrusion molding apparatus that simultaneously inserts a rod-shaped reinforcing material in the same flow direction as the extrusion raw material, a plate containing a plurality of guide pipes for introducing rods is installed in the mold,
An extrusion molding apparatus for inserting a rod-shaped reinforcing material, characterized in that the tip end portion of the guide pipe is projected from the plate, and the tip end position of the guide pipe is adjusted and fixed so as to be the mold drawing portion.