JP4566353B2 - Manufacturing method for homogeneous corner members and outer corner members for ceramic outer wall materials - Google Patents

Description

【００４６】
「予備成形」
上記配合の内、水を除く粉体を高速ミキサー１１にて３分間混合し、ついで水を添加してさらに分散せしめてから、２分間混練を行う。次いでニーダールーダー１２に移し、５分間混練りをする。混練された材料は真空押し出し機１３に供給され、この押出し機１３で所定の形状で押出された後、切断機１４で一定の長さに切断され、材料挿入部１６で型枠１８に充填供給される。
【００４７】
真空押し出し機１３を通過する過程で、混練された材料は混合混練中に含まれる気泡が除去されると共に、口金部を通過する際に所定の形状に成形される。ここで、所定の形状とは成形される出隅部材の断面に対して１２％大きくした形状で成形され、その長さは成形される出隅部材に対して９０％でカットされた形状をいう。
【００４８】
「プレス成形」
プレス機２３の下面盤にセットされたプレス金型の下部に、弾性型枠１８の熱膨張を抑制するためのストッパーを取り付けた養生トレー１７をセットする。次いで、弾性型枠１８を養生トレー１７の所定の位置にセットする。予備成形された成形材料を弾性型枠１８の中に挿入して、成形蓋２０をセットする。次いで、プレス金型の上部を固定したプレス機上盤面を下降させて、成形材料１００に所定の圧力をかける。成形品に嵌合部の凹部を形成するための刺し子４８を加圧後に押し込み、２５秒間保持した後に引き抜く。
【００４９】
この圧力は成形材料１００を弾性型枠１８の隅々まで行き渡るようにすることと、所定の厚み（この場合は１４ｍｍ）にするために必要であり、成形材料や成形品のパターンや形状によって異なるが、本実施形態では、２５ｋｇ／ｃｍ²の加圧下で３０秒間保持の条件で成形した。
【００５０】
「一次養生」
プレス完了後、養生トレー１８に乗せたままプレス金型から取り出し、７０℃で８時間の一次養生を実施した。成形材料が一次養生で硬化した後、成形品を弾性型枠から取り出し、バリ取りを実施した。この一次養生の条件は成形材料やプレスの条件などによって異なるので、それぞれの条件で最適の養生条件を求める必要がある。
【００５１】
「二次養生」
脱型した成形品は必要に応じて、オートクレーブ処理をし、その実用強度など必要な性能を促進して得ることができる。今回のテストでは８ｋｇ／ｃｍ²、１６０℃の条件で８時間の養生を実施した。
【００５２】
以上の工程で得られた成形品は稜線に面取りのないデザイン的に優れた外観と張り合わせ品と同等の施工性を持ちかつ、押し出し成形品と同等の耐久性や強度などの性能を兼ね備えている。
【００５３】
なお、本発明は上記実施形態に限定されるものではなく、本発明の範囲内で多くの修正・変更を加えることができるのは勿論である。例えば、上記実施形態では出隅部材の成形方法について説明したが、出隅部材と逆にコーナー部が凹んだ入り隅部材に本発明を適用してもよいことは勿論である。
【００５４】
【発明の効果】
以上の説明から明らかな通り、本発明によると、ゴム状弾性体からなる型枠の中に、混合混練され、予備成形されたセメント系の成形材料を挿入し、型枠を養生トレーに載せた状態でプレス機によって加圧することで、型枠に密着した出隅部材又は入り隅部材の成形体が得られ、この成形体が固まるまで型枠と共に一次養生を施した後、成形体を弾性型枠から取り出すので、脱型時の変形を防止して生産性が向上する。
【図面の簡単な説明】
【図１】窯業系外壁材用の同質出隅部材の斜視図
【図２】出隅部材の成形工程図
【図３】プレス機の断面図
【図４】図３のＤ−Ｄ断面図
【図５】成形体の養生状態を示す分解斜視図
【図６】弾性型枠の斜視図
【図７】出隅部材の嵌合部分の成形方法を示す図
【図８】（ａ）（ｂ）（ｃ）は夫々従来のプレス成形品、張り合わせ品及び押出し成形品の平面図
【図９】（ａ）（ｂ）（ｃ）は夫々図８のＡ−Ａ断面図、Ｂ−Ｂ断面図、Ｃ−Ｃ断面図
【符号の説明】
１ 出隅部材
１７ 養生トレー
１８ 弾性型枠
２０ 成形蓋
２３ プレス機
４０ 上型
４１ 下型
４８ 刺し子[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the production of homogeneous external corner member or equivalent containing a corner member for ceramic-based siding.
[0002]
[Prior art]
Techniques for producing homogeneous corner members for ceramic outer wall materials include a bonding method, an extrusion method, and a press method. Hereinafter, each method will be described.
[0003]
1) Bonding method FIG. 8 (b) is a plan view of a homogeneous corner member of the bonding method, and FIG. 9 (b) is a sectional view taken along line BB in FIG. 8 (b). This method is a method in which the cut pieces 201 and 202 from the same plate material as the outer wall material are bonded together in a protruding corner shape. Most of the current homogeneous external corner member is produced by this method has a following advantages and disadvantages.
[0004]
<Advantages>
・ The design is the same as the exterior wall material.
・ Outer wall materials can be used.
<Disadvantages>
-Since the chamfered part is greatly chamfered, it becomes a design defect.
-The durability at the bonded part is inferior.
Since the sunshine is usually different on the left and right surfaces, there is a difference in the expansion and contraction of the material on the left and right, which acts as a stress on the bonded portion (bonded portion). This repeated stress breaks the bonded part after construction, leading to cracks.
[0005]
2) Extrusion molding method FIG. 8 (c) is a plan view of a homogeneous corner member of the extrusion molding method, and FIG. 9 (c) is a sectional view taken along the line CC in FIG. 8 (c). This method is an extruded corner member 200 formed by extrusion, and is used as a long product, and has the following advantages and disadvantages.
[0006]
<Advantages>
-Good durability.
Since it is integral molding and the expansion / contraction rate in the length direction is small, there is no occurrence of cracks after construction.
-Good workability.
Usually, it is used at 3030 mm, and the installation work can be shortened.
<Disadvantages>
・ Inferior in design.
Since the direction of the design of the outer wall material and the direction of extrusion are at right angles, the same design cannot be made. It is used in a normal state of use or in a state where a step pattern or the like is added in the length direction. Or it becomes a fixed pitch with the design different from an outer wall material. The one with a relatively shallow pattern without repeated patterns is used.
・ The joints cannot be adjusted.
It is technically difficult to match the joint pattern in the vertical direction of the outer wall material or the joint pattern in the lateral direction of the outer wall material itself with the joint pattern of the protruding corner member formed by extrusion (perpendicular to the extrusion direction).
[0007]
With the current extrusion technology, patterning is performed with a pattern roller set at the mold outlet, but it is impossible to create joint patterns with a constant pitch perpendicular to the extrusion direction. The reason is that it is not possible to continuously match 100% during the production of the extrusion speed and the take-up speed of the molded product. Although it is possible instantaneously, a slight change in the material (for example, moisture in the raw material, particle diameter, fiber length, etc.) slightly affects the extrusion speed, and the balance with the take-up speed changes.
[0008]
If the speed ratio is the same, the pitch is constant, but if the speed ratio changes even a little, the pitch changes. If the extrusion speed becomes slow, the pitch becomes large. Conversely, if the extrusion speed becomes fast, the pitch becomes small.
[0009]
3) Press forming method FIG. 8A is a plan view of a homogeneous corner member of the press forming method, and FIG. 9A is a cross-sectional view taken along line AA of FIG. 8A. Most of the homogeneous corner members 200 are manufactured by the above methods 1) and 2), but press molding is considered to be technically possible.
[0010]
However, it is not actually put on the market and has not been put into practical use. The following problems can be considered as problems in this press molding method, and it can be assumed that they have not been put into practical use.
[0011]
<Probable problems>
-Deformation occurs when the mold is removed and the yield rate is extremely bad.
・ Molding cycle is long and productivity is remarkably bad.
-The fitting part cannot be configured simultaneously with molding.
-Cost is higher than bonded products.
[0012]
[Problems to be solved by the invention]
By the way, in recent years, the design of outer wall materials has become increasingly higher, and a deeply carved design has been required. Therefore, even for the same design of the homogeneous external corner member, conventional rather than external corner member having a design to shortcomings in the large chamfered ridge portion as described above, with the design of the same quality and siding out Corner members have been desired.
[0013]
[Means for Solving the Problems]
As a result of intensive studies to meet the above-mentioned demands, the present inventor has found that if molding is performed by the following manufacturing method , deformation of the molded product can be prevented at the time of demolding and productivity is increased. That is, the present invention is a method of press-molding a homogeneous corner member or homogeneous corner member formed of the same material as the ceramic outer wall material with a press machine, followed by curing and demolding, wherein the corner It is made of a rubber-like elastic body with a JIS hardness of 70 degrees or more and 85 degrees or less, having a mold recess that matches the shape of the member or the corner member, and having a shape similar to that of the ceramic outer wall material on the bottom surface. An elastic mold having an L-shaped cross section is prepared, and a metal curing tray having an L-shaped cross section is set in a cavity having a substantially L-shaped cross section of a press die of the press machine, and the elastic mold is mounted on the mounting portion. Set a molding lid with an L-shaped cross section to prevent the molding material from adhering to the press mold from above, inserting a water-curable ceramic molding material into the mold recess of the elastic mold, Then press mold By bringing the upper mold and the lower mold close to each other, a predetermined pressure is applied to the molding material inserted into the elastic mold so that the molding material reaches all the corners of the recess of the elastic mold and has a predetermined thickness. After that, the elastic mold frame filled with the molding material is taken out from the press mold together with the curing tray and the molding lid, and the molding material is cured and cured together with the elastic mold frame, the curing tray and the molding lid. Thereafter, the curing tray and the molding lid are separated, and the cured and cured molded product is removed from the elastic mold.
[0014]
According to such a molding method, since it is a molding method similar to the press molding method, it is possible to satisfy even a deeply carved design request. In addition, since the molded body is demolded after the molded body is cured and a rubber-like elastic body is used as a mold frame, the molded product can be prevented from being deformed during demolding. Furthermore, since the molded body is primarily cured together with the mold, the number of molds is necessary. However, if each mold is filled with a molding material in advance and press molding is performed sequentially, demolding is performed immediately after press molding. Compared with the conventional press forming method, it is possible to perform efficient press forming and shorten the forming cycle.
[0015]
The molded body may be cured after the primary curing, if necessary, by performing a secondary curing such as an autoclave. Further, in the homogeneous corner member , a fitting portion for fitting with the homogeneous corner member is formed on the upper and lower sides thereof. The fitting portion can be molded simultaneously with the molding of the entire protruding corner member. it can.
[0016]
Further, these methods of molding is not limited to the homogeneous external corner member, even a molded article having a homogeneous-filled corner member or other shapes can be developed.
[0017]
As the material of the elastic formwork, among the materials having elasticity such as PU (polyurethane), EPDM, silicon, and rubber materials, those having a JIS A hardness of 70 degrees or more and 85 degrees or less are optimal. This is because when the hardness is less than 70 degrees, it is difficult to faithfully copy the pattern, and when the hardness exceeds 85 degrees, it is difficult to remove the molded product from the mold.
[0018]
The pattern on the surface of the homogeneous corner member must be pre-molded on the inner surface of the mold, but as a method of applying this pattern, there are general methods such as engraving on a mold or casting from a master model. It is possible to adopt a method that has been adopted.
[0019]
As a molding material for the homogeneous corner member , any material can be used as long as it has a composition similar to that of an outer wall material or an accessory made by extrusion molding. For example, a material that hardens by reaction with water, such as a cement system or a gypsum slag system, can be used. In general, a light-weight aggregate, reinforcing agent, molding aid, etc. are dispersed and mixed in a mixture of cement and silica powder, water is further dispersed and mixed, and then kneaded to form a molding material. Can do. In addition, in order to reduce the weight of the homogenous projecting corner member, a material generally referred to as a weight-reduced aggregate can be used regardless of whether it is natural or artificial, such as perlite, shirasu balloon, and calcium silicate.
[0020]
As the reinforcing agent, pulp, PP fiber, mineral fiber and the like can be used in the same manner as the outer wall material. As a molding aid, methyl cellulose or other materials having similar performance can be used for the purpose of imparting water retention to the kneaded material. Further, as a molding aid, a surfactant can be used for the purpose of improving the dispersion of the mixed material. Furthermore, a curing accelerator can be used as a molding aid for the purpose of promoting the hydration reaction.
[0021]
The molding material is preformed for the following reason. In other words, the molding material mixed and kneaded with the homogeneous corner member can be measured and packed in the elastic mold as it is, but it can be packed into an appropriate shape through the vacuum extruder, for example, the homogeneous corner member . This is because a homogeneous corner member with better quality can be obtained by inserting a pre-formed product into a shape having a similar cross-sectional shape. By passing through the vacuum extruder, not only the air entrained in the material during mixing and kneading can be removed, the performance can be improved, but the kneading effect can be further enhanced and the molding can be facilitated.
[0022]
In press molding of the molding material, pressure is applied to the molding material inserted into the elastic mold to bring it into close contact with the elastic mold. As this pressurizing method, a hydraulic press, a crank press or the like can be used. Although it depends on the molding material, it is desirable that the press molding machine is a facility that produces a pressure of at least 10 kg / cm ² or more. As the press mold, it is desirable to press the four sides of the part corresponding to both sides of the elastic mold and the part related to the fitting from the beginning to the end of the pressurization.
[0023]
The curing tray is necessary to facilitate the insertion of the elastic mold and molding material into the press mold, and to cure the molding material that has been press-molded by a press machine without any deformation. . Stack the trays with the elastic formwork and molding material on the curing tray and place them in the curing room.
[0024]
Further, for the purpose of preventing the molding material from adhering to the press mold and creating a concave groove at the apex of the inner surface of the molded homogenous corner member , a plate-like material having a convex shape at the apex, for example, Such a press-molded stainless plate or the like can be used as a molding lid. Incidentally, the concave groove of the inner surface of the homogeneous external corner member is used to ensure the adhesion to such pillars during construction of the homogeneous external corner member.
[0025]
Of mating portion of the homogeneous external corner member, provided Sashiko the same shape as the recesses in the mold, during the advance or pressure, or by inserting after pressing, it can be formed simultaneously with molding the recess.
[0026]
After the molding material is cured by a hydration reaction during the primary curing, the molded product (cured molding material) can be taken out from the elastic mold. Since demolding after curing, the molded product is not distorted at the time of demolding, and defects such as chipping and scratches are not imparted to the product. The demolded elastic mold can be used again by applying a release agent.
[0027]
Furthermore, when performing primary curing, when heat is applied to the elastic mold, elongation occurs in the elastic mold by linear expansion. Stretching of the mold that occurs until the molded product is cured has a significant adverse effect on the molded product. For example, when urethane elastomer is used as an elastic mold, if the linear expansion coefficient is about 2.4 × 10 ⁻⁴ , the product length is 455 mm, and the curing temperature is 70 ° C., the elastic mold is under curing. About 5.5 mm. In order to prevent this elongation, the following measures can be taken.
1) Curing at room temperature.
-Add a room temperature curing accelerator to the molding material and cure at room temperature.
-Increase the pressurizing time.
[0028]
By taking the above measures alone or in combination, room temperature curing is possible.
2) Heat curing is performed in a state where the surface to be suppressed is pressed with a metal mold so as not to stretch the elastic mold.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view of a homogeneous corner member for a ceramic industry outer wall material, and FIG. 2 is a process chart for forming the corner member .
[0030]
As shown in FIG. 1, the homogeneous corner member 1 includes a convex corner portion in which the right and left plates intersect at right angles at the corner portion of the building, and the surface has a pattern similar to the ceramic outer wall material 2. It is formed.
[0031]
As shown in FIG. 2, the molding process of the homogeneous corner member 1 is roughly divided into a preliminary molding process, a press molding process, a curing process, and a demolding process. A preforming apparatus 10 used in the preforming process includes a mixer 11 and a kneader / ruder 12 for mixing and kneading molding materials, and a vacuum extruder 13 for extruding the material kneaded by the kneader / louder in a predetermined shape. And a cutting machine 14 for cutting the molding material extruded from the extruder 13 into a predetermined length.
[0032]
In the vacuum extruder 13, it is possible to obtain a homogeneous corner member with higher quality by extruding a product having a cross-sectional shape similar to that of the homogeneous corner member in advance from the extrusion base. Further, by passing through the vacuum extruder 13, the air entrained in the material during mixing and kneading is removed, and the kneading effect is further enhanced to facilitate molding.
[0033]
The material cut by the cutting machine 14 is transported to the material insertion portion 16 by the fast-forwarding conveyor 15, and is inserted into the elastic mold 18 placed on the curing tray 17 in the material insertion portion 16. Further, a conveyer 19 is interposed between the kneader / ruder 12 and the extruder 13.
[0034]
In the press molding process, the cover insertion portion 21 for inserting the cover 20 above the mold 18 into which the molding material is inserted, and the molding material containing mold 18 fed from the cover insertion portion 21 are intervened together with the curing tray 17. In order to transfer the molding material pressed by the pressing machine 23 and the molding material pressed by the pressing machine 23 together with the mold 18 and the curing tray 17 to the curing process, the curing tray 17 is placed in the curing rack 25. And a transfer machine 24 for stacking. Except for the press machine 23, the structure thereof is well known, and the description thereof is omitted. The press machine 23 will be described later.
[0035]
The apparatus used for the curing process includes a primary curing chamber 26 with a hot air generator for curing molded products stacked on the curing rack 25 by the transfer machine 24, molded products taken out from the curing chamber 26, and A transfer machine 28 is provided which takes out the elastic mold 18 together with the curing tray 17 and sends it out to the demolding process.
[0036]
The demolding machine 30 used in the demolding process has a well-known structure, and separates the curing tray 17 and the elastic mold 18 containing a molded product. The separated curing tray 17 is conveyed from the tray collection line 31 to the material insertion unit 16. At the subsequent stage of the demolding machine 30, a demolding section 31 for separating and demolding the elastic mold 18, the molding lid 20 and the molded product is provided. The elastic mold 18 separated by the demolding unit 31 is placed on the curing tray 17 by the mold insertion line 32 on the terminal end side of the tray collection line 31 after cleaning. Although not shown, the molded product after demolding is deburred and then cured in the secondary curing room to be a finished product.
[0037]
Figure 3 is a sectional view of the press, Figure 4 is sectional view taken along line D-D of FIG. 3, FIG. 5 is an exploded perspective view showing the curing conditions of the shaped body, Figure 6 is a perspective view of the elastic mold, FIG. 7 is external corner It is a figure which shows the shaping | molding method of the fitting part of a member . As shown in the figure, the press machine 23 is formed with a substantially L-shaped cavity 43 into which the curing tray 17, the elastic mold 18 and the molding lid 20 can be inserted by the upper mold 40 and the lower mold 41, and is 10 kg / cm ² or more. It is possible to exert the applied pressure. The upper die 40 has an edge presser 45 projecting downward on both sides of the cavity, and a coil spring 46 is provided so as to urge the edge presser 45 downward.
[0038]
In this embodiment, two cavities 43 are arranged side by side so that two molded products can be obtained at the same time, and the lower mold 41 has a tray so that the curing tray 17 can be placed across both cavities 43. An intervention space is provided.
[0039]
At both ends in the length direction of the molds 40 and 41 of the press machine 23, an end presser 47 and a stab 48 are provided. The sashimi 48 is for forming a concave and convex fitting portion at the end of the molded product, and is held in a sashimi holder 49 fixed to the end of the lower mold 41 so as to be movable in the length direction. Yes.
[0040]
As shown in FIG. 7, the moving mechanism of the sashimi 48 is composed of an inclined surface 50 formed at the outer end of the sashimi 48 and a pressing bar 51 formed at the end of the upper mold 40 so as to face the inclined surface. When the pressing bar 51 is lowered, the inclined surface 52 formed on the inner surface of the lower end presses the inclined surface 50 of the stab 48 so that the stab 48 can be moved inward in the length direction. The holder 49 is formed with an opening 53 through which the presser bar 51 can be interposed.
[0041]
The curing tray 17 is obtained by press-molding a stainless steel plate, and two L-shaped placement portions 17a and 17b formed in parallel so that two elastic molds 18 can be placed; A connecting portion 17c that connects these placement portions and overhang portions 17d and 17e that project outward from the placement portions 17a and 17b are provided, and rectangular tube-like stacked cylinders 55 are fixed to the overhang portions 17d and 17e by welding. Has been. A positioning pin 56 protrudes from the upper surface of the stacking cylinder 55, and an opening 57 into which the positioning pin 56 of the lower curing tray 17 can be fitted is formed on the lower surface.
[0042]
The elastic mold 18 is formed from a cast polyurethane elastomer (rubber hardness 80) in an L-shaped cross section, and a mold recess 60 is formed on the inner surface thereof in accordance with the shape of the protruding corner member , and a pattern similar to the outer wall material is formed on the bottom surface. Inverted pattern 71 is formed. Further, a stepped portion 61 is formed on the peripheral wall on one end side in the length direction of the mold 18 in accordance with the shape of the fitting portion of the projecting corner member , and an opening through which the stirrer 48 can intervene on the peripheral wall on the other end side. A portion 63 is formed.
[0043]
The forming lid 20 is formed by press-molding a stainless steel plate, and at its apex, the adhesion of the molding material to the press mold is prevented, and a concave groove is formed at the apex of the inner surface of the molded homogeneous corner member. For the purpose, a convex portion is formed at the apex.
[0044]
<Molding method>
Next, a description method of forming the external corner member using the molding apparatus of the above configuration. As the molding material for the protruding corner member, the one shown in Table 1 was used.
[0045]
[Table 1]

[0046]
"Preliminary molding"
Among the above blends, the powder excluding water is mixed for 3 minutes with the high-speed mixer 11, then water is added and further dispersed, and then kneaded for 2 minutes. Subsequently, it moves to the kneader ruder 12 and kneads for 5 minutes. The kneaded material is supplied to a vacuum extruder 13, extruded in a predetermined shape by the extruder 13, cut to a predetermined length by a cutting machine 14, and supplied to a mold 18 by a material insertion portion 16. Is done.
[0047]
In the process of passing through the vacuum extruder 13, the kneaded material is formed into a predetermined shape when passing through the base part while removing bubbles contained during mixing and kneading. Here, the predetermined shape is a shape that is formed with a shape that is 12% larger than the cross section of the formed corner member , and the length is a shape that is cut by 90% with respect to the molded corner member . .
[0048]
"Press molding"
The curing tray 17 attached with a stopper for suppressing the thermal expansion of the elastic mold 18 is set at the lower part of the press mold set on the lower surface board of the press machine 23. Next, the elastic mold 18 is set at a predetermined position on the curing tray 17. The preformed molding material is inserted into the elastic mold 18 and the molding lid 20 is set. Next, the upper surface of the press machine to which the upper part of the press mold is fixed is lowered, and a predetermined pressure is applied to the molding material 100. The stab 48 for forming the concave portion of the fitting part is pressed into the molded product after being pressed, held for 25 seconds, and then pulled out.
[0049]
This pressure is necessary to allow the molding material 100 to reach every corner of the elastic mold 18 and to have a predetermined thickness (14 mm in this case), and varies depending on the molding material and the pattern and shape of the molded product. However, in this embodiment, the molding was performed under the condition of holding for 30 seconds under a pressure of 25 kg / cm ² .
[0050]
"Primary curing"
After the press was completed, it was removed from the press mold while being placed on the curing tray 18 and subjected to primary curing at 70 ° C. for 8 hours. After the molding material was cured by primary curing, the molded product was taken out of the elastic mold and deburred. Since the conditions for the primary curing vary depending on the molding material and the pressing conditions, it is necessary to obtain optimum curing conditions for each condition.
[0051]
"Secondary curing"
The demolded molded product can be obtained by autoclaving as necessary to promote necessary performance such as practical strength. In this test, curing was carried out for 8 hours under conditions of 8 kg / cm ² and 160 ° C.
[0052]
The molded product obtained by the above process has a design that is not chamfered on the ridgeline and has the same workability as a bonded product, and has the same durability and strength as an extruded product. .
[0053]
In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added within the scope of the present invention. For example, in the above-described embodiment, the method for forming the protruding corner member has been described. However, it is needless to say that the present invention may be applied to an entering corner member having a recessed corner portion contrary to the protruding corner member .
[0054]
【The invention's effect】
As is apparent from the above description, according to the present invention, a cement-based molding material that has been mixed and kneaded and preformed is inserted into a mold made of a rubber-like elastic body, and the mold is placed on a curing tray. By pressing with a press machine in a state, a molded body of a protruding corner member or a corner member in close contact with the mold is obtained, and after the primary curing is performed together with the mold until the molded body is solidified, the molded body is elastic Since it is taken out from the frame, deformation at the time of demolding is prevented and productivity is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of a homogeneous corner member for an outer wall material for ceramic industry. FIG. 2 is a molding process diagram of the corner member . FIG. 3 is a sectional view of a press. FIG. 5 is an exploded perspective view showing a cured state of a molded body. FIG. 6 is a perspective view of an elastic mold. FIG. 7 is a view showing a method for forming a fitting portion of a protruding corner member . (C) is a plan view of a conventional press-formed product, bonded product, and extruded product, respectively. CC cross section [Explanation of symbols]
1 Exit corner member 17 Curing tray 18 Elastic mold frame 20 Molding lid 23 Press machine 40 Upper mold 41 Lower mold 48 Stitch

Claims (5)

After press molding a homogeneous corner member or homogeneous corner member molded with the same quality material as the ceramic outer wall material, it is cured and cured and demolded,
A rubber-like elasticity with a JIS hardness of 70 degrees or more and 85 degrees or less , having a mold recess adapted to the shape of the protruding corner member or the entering corner member, and having an inverted shape similar to that of the ceramic outer wall material on the bottom surface. Prepare an elastic mold with L-shaped cross section consisting of body ,
A metal curing tray having an L-shaped cross section is set in a cavity having a substantially L-shaped cross section of a press die of the press machine, and the elastic mold is set on the mounting portion, and a mold recess of the elastic mold Insert the water-hardening ceramic molding material into the mold, set the L-shaped molding lid to prevent the molding material from adhering to the press mold, and then press the upper and lower molds of the press mold. By applying a predetermined pressure to the molding material inserted into the elastic mold, the molding material is spread to every corner of the recess of the elastic mold, and is pressed to a predetermined thickness. Thereafter, the elastic mold frame filled with the molding material is taken out from the press mold together with the curing tray and the molding lid, and the molding material is cured and cured together with the elastic mold frame, the curing tray and the molding lid, and then the curing tray. And separating the molding lid Method for producing a homogeneous external corner member or equivalent containing a corner member for ceramic-based siding, characterized in that the demolding the cured cured molded article from the elastic mold. 2. The homogeneous material according to claim 1, wherein the water-curing ceramic material is mixed and kneaded, degassed through a vacuum extruder, and pre-formed into a predetermined shape by an extrusion die and filled into an elastic mold. A method for producing a protruding corner member or a homogeneous corner member. Inserting a stab for forming a concave and convex fitting part in the mouth part of the molded product in advance or during pressing or after pressing to form the fitting part simultaneously with curing of the water-curable ceramic molding material manufacturing method of the same quality external corner member or equivalent containing a corner member according to claim 1 or 2, characterized in. Claim 1, wherein the state in which pressing the surface to be suppressed in the metal mold so as not to extend the elastic mold held in curing tray and warmed cured by suppressing expansion due to heat of the elastic mold The manufacturing method of the homogeneous corner member for ceramic-type outer wall materials in any one of -3, or a homogeneous corner member. The method for producing a homogeneous corner member or a homogeneous corner member for a ceramic outer wall material according to any one of claims 1 to 3, wherein a curing accelerator is added to the water-curable ceramic material to promote curing at room temperature. .

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