JPS6016889B2 - Molding device for molded bodies with uneven cross sections - Google Patents
Molding device for molded bodies with uneven cross sectionsInfo
- Publication number
- JPS6016889B2 JPS6016889B2 JP7195679A JP7195679A JPS6016889B2 JP S6016889 B2 JPS6016889 B2 JP S6016889B2 JP 7195679 A JP7195679 A JP 7195679A JP 7195679 A JP7195679 A JP 7195679A JP S6016889 B2 JPS6016889 B2 JP S6016889B2
- Authority
- JP
- Japan
- Prior art keywords
- forming roll
- shape
- forming
- molding
- leveling plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
Description
【発明の詳細な説明】
この発明は瓦など凹凸断面をもつ成形体を成形するため
の成形装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molding apparatus for molding a molded article having an uneven cross section, such as a roof tile.
従来、セメントなど水硬性組成物の成形には水で練った
材料を所定の型の中に注入し硬化させる注型成形法や材
料を所定の型内で圧縮成形するプレス成形法などが採用
されてきたが、これらの方法はいずれも断続的な成形法
であるため非能率的であるという欠点をもつていた。Traditionally, hydraulic compositions such as cement have been molded using cast molding methods, in which a material mixed with water is injected into a predetermined mold and hardened, and press molding methods, in which the material is compression molded in a predetermined mold. However, all of these methods have the disadvantage of being inefficient because they are intermittent molding methods.
またかなり多くの水を使用するためセメント中のアルカ
リが溶出し得られた製品の表面に白い斑点を生ずるいわ
ゆる白華現象が起こることが多かった。このような欠点
を改良するためスクリューなどを利用して材料を成形ダ
ィから押出す。いわゆる押出成形法が開発されたが、こ
の方法では押出方向に直角な断面においてのみ凹凸状を
なす成形体しか得られず、また幅の広い成形体の場合は
圧力むらなどのため歪が生じやすいという欠点があった
。この発明は従来の成形方法のこのような欠点を改良し
、凹凸断面をもっと幅広い成形体であっても歪の生じに
くい成形体を能率よく成形することができ、また表裏2
面のうちいずれか一方の面には下型の進行方向に沿った
断面にも凹凸のあらわれるような形状の成形体をも成形
することができる装置を提供することを目的としている
。以下これについて説明する。この発明にかかる凹凸断
面をもつ成形体の成形装置は、成形体の下面形状に対応
する成形面をそなえコンベアにより移動する下型、下型
の上方に位置し下型の進行方向に直角な断面における成
形体の上面形状に対応する形状の加工面をそなえた成形
ロール、該成形ロールの前方に位置し、下端部が成形ロ
ールの下端部形状と近似する形状で成形ロールの下端部
よりも上方にあるならし板、及びならし板の前方に配設
された材料送り込み羽根車からなることを特徴としてい
る。Furthermore, since a considerable amount of water is used, the alkali in the cement often dissolves and causes white spots on the surface of the resulting product, a so-called efflorescence phenomenon. In order to overcome these drawbacks, the material is extruded from a molding die using a screw or the like. A so-called extrusion molding method was developed, but with this method only a molded product with unevenness can be obtained in the cross section perpendicular to the extrusion direction, and in the case of a wide molded product, distortion is likely to occur due to uneven pressure. There was a drawback. This invention improves these shortcomings of the conventional molding method, makes it possible to efficiently mold a molded product that is less prone to distortion even when the uneven cross section is wider, and also makes it possible to efficiently mold a molded product that is less prone to distortion.
It is an object of the present invention to provide an apparatus capable of molding a molded body having a shape in which irregularities also appear on one of the surfaces in a cross section along the direction of movement of the lower die. This will be explained below. The apparatus for molding a molded article having an uneven cross section according to the present invention includes a lower mold that has a molding surface corresponding to the lower surface shape of the molded object and is moved by a conveyor, and a cross section that is located above the lower mold and that is perpendicular to the direction of movement of the lower mold. A forming roll having a processed surface with a shape corresponding to the upper surface shape of the formed article, located in front of the forming roll, with a lower end having a shape similar to the lower end shape of the forming roll, and above the lower end of the forming roll. It is characterized by consisting of a leveling plate located at the top and a material feeding impeller disposed in front of the leveling plate.
これを実施例にもとづいて説明すれば、第1図はこの成
形装置の構成図でありこの図において矢印A方向に移動
するコンベア1の上に成形体の下面形状に対応する形状
の底面(成形面)をそなえた複数個の下型2が載せられ
ている。この場合下型の底面形状は進行方向に沿って凹
凸のあらわれるようなものであってもかまわない。下型
の上方には矢印B方向に回転する成形ロール3が設けら
れている。成形ロール3は下型の進行方向に直角な断面
における成形体の上面形状に対応する形状をなす加工面
(外周面)をそなえている。この成形ロールの直前には
成形ロールに送り込まれる成形材料7の上面をならすた
めのならし板4が設けられている。このならし板4の下
端部は成形ロールの下端部形状と近似する形状で、成形
ロールの下端部よりも上方に位置している。ならし板4
の前方には矢印C方向に回転する材料送り込み羽根車5
が配設されている。羽根車5は回転軸のまわりに複数板
の羽根板を植え付けてなるもので成形ロールに送り込ま
れる材料が途切れやすい部分にのみ配設される。このよ
うな構成において、ならし板の前方で下型上に供給され
たセメント系混練物などの成形材料7はコンベアの移動
にともなって矢印A方向に進行し、ならし板4によって
上面を‘まゞ成形ロ−ルの加工面形状にならされたのち
成形ロール3に送り込まれ、成形ロールと下型との間で
目的とする成形体に加圧成形される。この場合羽根車5
は成形ロールに送り込まれる成形材料が途切れるのを防
ぐ役目をする。次に第2図に示すような断面をもつ成形
体を成形する場合を例にとってさらに詳しく説明する。
この場合に用いられる成形ロールは第3図に示すような
形状のものである。第3図は正面図であり、成形ロール
の加工面の下端部には第2図に示す成形体の上面形状に
対応する凹凸形状があらわれる。第4図はこの成形ロー
ル3と下型2、およびならし板4の関係をあらわす。即
ち成形ロール3と下型2とによって形成される空間は成
形体の断面形状を形成し、ならし板4の下端部は成形ロ
ールの凸部に対して凸部となり、成形ロールの凹部に対
しては凹部となっている。このならし板により下型上の
成形材料はほゞ成形ロールの加工面形状にならされる。
このように予め成形材料を成形ロールの加工面形状にほ
ゞ適合するような形状にならしておくことにより密度分
布の均一な、歪の少ない成形体が得られるのである。な
らし板の下端部と成形ロールの下端部との差は加圧成形
のための圧縮シロである。この場合において成形ロール
の凹部における成形ロールの下端部とならし板下端部と
の差t,は成形ロールの凸部におけるその差らより大き
くなっている。これは成形ロールの凸部においては外径
が大きいので周速が大きく、周速の小さい凹部よりも成
形材料を多く巻き込みやすいことからミー・め凸部に供
聯合する成形材料の量をその分だけ少なくしておくため
である。成形材料の巻き込み量が部分的に異なると得ら
れる成形体に歪みを生じるおそれがある。第5図は使用
されるならし板の外観を示す。ならし板と成形ロールと
の間隔をあまり大きくするとその間で材料の途切れが生
じやすいので、これを出来るだけ4・さくする方がよい
。また同様な理由でならし板の厚みをあまり大きくする
のは好ましくない。普通はこの厚みを3肌以下とするの
が適当である。第6図は羽根車5の外観図であり、これ
は強制的に回転させられる回転軸51のまわりに複数の
板体52を植え付けてなる。羽根となる板体の数は成形
材料の性質、回転数「成形速度などに応じて適当なもの
を選ぶべきである。第7図はこの羽根車を設置した場合
の成形ロールなどに対する位置関係をあらわす。この図
からわかる通り羽根車は成形ロールの凸部の、ならし板
によって成形材料の量を他より少なくされる部分に配さ
れる。羽根車を配設する目的は前述したように成形ロー
ルへの成形材料の供聯合をとどこおりなく行なうことに
ある。同図の場合はならし板によって成形材料の量を減
らされる成形。ールの中央部(凸部)で成形材料の途切
れが起こりやすく、従ってこの部分に羽根車を配して強
制的に成形材料を送り込むのである。羽根車とならし板
との間隔は成形材料の性質、成形速度などに応じて適当
なものを選べばよい。このようなならし板と羽根車の働
きにより複雑な凹凸形状の成形体を均一な密度分布で成
形することができるのである。なお、第1図における6
は得られる成形体の表面をより平滑にするため及び成形
体の下型からの浮き上りを防ぐため必要に応じて配設さ
れるフオーミングダイである。To explain this based on an example, Fig. 1 is a configuration diagram of this molding apparatus. In this figure, a bottom surface (forming A plurality of lower molds 2 each having a surface) are placed thereon. In this case, the bottom surface shape of the lower die may be such that unevenness appears along the direction of movement. A forming roll 3 rotating in the direction of arrow B is provided above the lower die. The forming roll 3 has a processed surface (outer circumferential surface) having a shape corresponding to the top surface shape of the molded article in a cross section perpendicular to the direction of movement of the lower die. Immediately before the forming roll, a leveling plate 4 is provided to level the upper surface of the molding material 7 fed into the forming roll. The lower end of this leveling plate 4 has a shape similar to that of the lower end of the forming roll, and is located above the lower end of the forming roll. Leveling board 4
In front of the is a material feeding impeller 5 rotating in the direction of arrow C.
is installed. The impeller 5 is made up of a plurality of vanes placed around a rotating shaft, and is disposed only in areas where the material fed into the forming rolls is likely to be interrupted. In such a configuration, the molding material 7 such as a cement-based kneaded material supplied onto the lower mold in front of the leveling plate advances in the direction of arrow A as the conveyor moves, and the upper surface is flattened by the leveling plate 4. After being smoothed into the shape of the processed surface of the forming roll, it is fed into the forming roll 3, and is pressure-formed into the desired molded body between the forming roll and the lower die. In this case impeller 5
serves to prevent the molding material fed into the molding rolls from being interrupted. Next, a case in which a molded body having a cross section as shown in FIG. 2 is molded will be explained in more detail by way of example.
The forming roll used in this case has a shape as shown in FIG. FIG. 3 is a front view, and an uneven shape corresponding to the upper surface shape of the molded article shown in FIG. 2 appears at the lower end of the processed surface of the forming roll. FIG. 4 shows the relationship between the forming roll 3, the lower die 2, and the leveling plate 4. In other words, the space formed by the forming roll 3 and the lower die 2 forms the cross-sectional shape of the formed body, and the lower end of the leveling plate 4 becomes a convex part relative to the convex part of the forming roll, and the space formed by the forming roll 3 forms a convex part relative to the concave part of the forming roll. There is a recess. With this leveling plate, the molding material on the lower die is leveled to approximately the shape of the processed surface of the forming roll.
By shaping the molding material in advance into a shape that approximately conforms to the shape of the machined surface of the forming roll, a molded body with a uniform density distribution and less distortion can be obtained. The difference between the lower end of the leveling plate and the lower end of the forming roll is a compression margin for pressure forming. In this case, the difference t between the lower end of the forming roll at the concave portion of the forming roll and the lower end of the leveling plate is larger than the difference between the convex portions of the forming roll. This is because the outer diameter of the convex part of the forming roll is large, so the circumferential speed is high, and it is easier to roll in more molding material than the concave part, which has a small circumferential speed. This is to keep it to a minimum. If the amount of the molding material involved differs locally, there is a risk that the resulting molded product will be distorted. FIG. 5 shows the external appearance of the leveling board used. If the distance between the leveling plate and the forming roll is too large, the material tends to break off between them, so it is better to make this distance as small as possible. Also, for the same reason, it is not preferable to make the thickness of the leveling board too large. Normally, it is appropriate to set this thickness to 3 skins or less. FIG. 6 is an external view of the impeller 5, which is made up of a plurality of plates 52 placed around a rotating shaft 51 that is forcibly rotated. The number of blades to be used as blades should be selected appropriately depending on the properties of the molding material, the number of rotations and the molding speed. Figure 7 shows the positional relationship with respect to the forming rolls when this impeller is installed. As you can see from this figure, the impeller is placed on the convex part of the forming roll where the leveling plate reduces the amount of forming material compared to the other parts.The purpose of providing the impeller is as described above. The goal is to ensure that the molding material is not completely added to the roll. In the case shown in the figure, the amount of molding material is reduced by the leveling plate. Discontinuation of the molding material occurs at the center (convex part) of the roll. Therefore, an impeller is placed in this area to forcibly feed the molding material.The distance between the impeller and the leveling plate can be selected appropriately depending on the properties of the molding material, molding speed, etc. Due to the function of the leveling plate and the impeller, it is possible to mold a molded product with a complex uneven shape with a uniform density distribution.
A forming die is provided as necessary to make the surface of the obtained molded product smoother and to prevent the molded product from lifting off from the lower die.
このフオーミングダイ6は成形体の上面形状に対応する
加工面をそなえ、その成形面は普通1′1000〜20
/I00の里度の勾配で入口より出口側が狭くなってお
り、これを成形ロールの直後(好ましくは成形ロールに
接して)に設けておけば成形体の表面はきわめて平滑に
仕上げられ、かつ、ともすれば下型から離脱して浮き上
がりやすい未硬化の成形体を押えることにより無用な変
形や損傷が防がれる。第8図はフ′オーミングダィの入
口側からみた外観図である。第1図中8は得られる成形
体であり後で所定寸法に切断され下型から取出される。
以上の構成からわかる通りこの成形法は連続的な成形方
法であるからきわめて能率的であり、セメント系組成物
を水で混練した成形材料を使用する場合にもそれほど流
動性を必要としないので水の量を適当に少なくすること
ができ、従って成形体に白拳現象が生じにくい。また、
下型により成形される面はその進行方向に沿って凹凸の
あらわれるものであってもよい。以上に説明した如くこ
の発明にかかる凹凸断面をもつ成形体の成形装置は、成
形体の下面形状に対応する成形面をそなえコンベアによ
り移動する下型、下型の上方に位置し下型の進行方向に
直角な断面における成形体の上面形状に対応する形状の
加工面をそなえた成形ロール、該成形ロールの前方に位
置し、下端部が成形ロールの下端部形状と近似する形状
で成形ロールの下端部よりも上方にあるならし板、及び
ならし板の前方に配設された材料送り込み用羽根車から
なることを特徴とするので凹凸断面をもつ幅の広い成形
体であっても歪の生じにくい成形体を能率よく成形する
ことができるようになり、また表裏2面のうちいずれか
一方の面には下型の進行方向に沿った断面にも凹凸のあ
らわれるような形状の成形体をも成形することができる
こと)なった。This forming die 6 has a processing surface corresponding to the upper surface shape of the molded object, and the forming surface is usually 1'1000 to 20 mm.
The outlet side is narrower than the inlet with a gradient of /I00, and if this is provided immediately after the forming roll (preferably in contact with the forming roll), the surface of the formed product will be finished extremely smooth, and Unnecessary deformation and damage can be prevented by holding down the uncured molded product, which tends to separate from the lower mold and float up. FIG. 8 is an external view of the forming die seen from the inlet side. Reference numeral 8 in FIG. 1 is the obtained molded product, which is later cut into a predetermined size and taken out from the lower mold.
As can be seen from the above structure, this molding method is extremely efficient as it is a continuous molding method, and even when using a molding material made by kneading a cementitious composition with water, it does not require much fluidity, so water can be appropriately reduced, so that the white fist phenomenon is less likely to occur in the molded article. Also,
The surface formed by the lower die may have unevenness along the direction of movement. As explained above, the apparatus for molding a molded article having an uneven cross section according to the present invention has a molding surface corresponding to the lower surface shape of the molded article and is located above the lower mold, which is moved by a conveyor, and is positioned above the lower mold as the lower mold advances. A forming roll having a processed surface having a shape corresponding to the upper surface shape of the formed object in a cross section perpendicular to the direction, the forming roll being located in front of the forming roll, and having a lower end having a shape similar to the lower end shape of the forming roll. The feature is that it consists of a leveling plate located above the lower end and a material feeding impeller placed in front of the leveling plate, so even if it is a wide molded product with an uneven cross section, it will not be distorted. It is now possible to efficiently mold a molded product that is difficult to form, and it is also possible to form a molded product with a shape that has unevenness on either the front or back surface in the cross section along the direction of movement of the lower mold. can also be molded).
第1図は成形装置の構成図、第2図は成形体の断面図、
第3図は成形ロールの正面断面図、第4図は成形ロール
、下型及びならし板の位置関係の説明図、第5図はなら
し板の外観図、第6図は羽根車の外観図、第7図は羽根
車の位置関係の説明図、第8図はフオーミングダィの外
観図である。
図はいずれも実施例をあらわす。1・・・・・・コンベ
ア、2・・・・・・下型、3・・・・・・成形ロール、
4…・・・ならし板、5・・・・・・羽根車、6・・・
・・・フオーミングダイ。
第1図
第2図
第3図
第4図
第5図
第6図
第7図
第8図Figure 1 is a configuration diagram of the molding device, Figure 2 is a sectional view of the molded body,
Figure 3 is a front sectional view of the forming roll, Figure 4 is an explanatory diagram of the positional relationship of the forming roll, lower die, and leveling plate, Figure 5 is an external view of the leveling plate, and Figure 6 is the external appearance of the impeller. FIG. 7 is an explanatory diagram of the positional relationship of the impeller, and FIG. 8 is an external view of the forming die. All figures represent examples. 1... Conveyor, 2... Lower die, 3... Forming roll,
4... leveling board, 5... impeller, 6...
...Forming die. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8
Claims (1)
アにより移動する下型、下型の上方に位置し下型の進行
方向に直角な断面における成形体の上面形状に対応する
形状の加工面をそなえた成形ロール、該成形ロールの前
方に位置し、下端部が成形ロールの下端部形状と近似す
る形状で、成形ロールの下端部よりも上方にあるならし
板、及びならし板の前方に配設された材料送り込み用羽
根車からなる凹凸断面をもつ成形体の成形装置。 2 成形ロールの後方に成形体の上面形状に対応する加
工面をそなえたフオーミングダイを配してなることを特
徴とする特許請求の範囲第1項記載の凹凸断面をもつ成
形体の成形装置。[Claims] 1. A lower mold that is moved by a conveyor and has a molding surface that corresponds to the shape of the lower surface of the molded object, and that is located above the lower mold and corresponds to the shape of the upper surface of the molded object in a cross section perpendicular to the direction of movement of the lower mold. a forming roll having a processing surface shaped like this, a leveling plate located in front of the forming roll, the lower end of which has a shape similar to the lower end shape of the forming roll, and which is above the lower end of the forming roll; A device for forming a molded body with an uneven cross section, consisting of an impeller for feeding material placed in front of a leveling plate. 2. An apparatus for forming a molded body having an uneven cross section according to claim 1, characterized in that a forming die having a processing surface corresponding to the upper surface shape of the molded body is disposed behind the forming roll. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7195679A JPS6016889B2 (en) | 1979-06-07 | 1979-06-07 | Molding device for molded bodies with uneven cross sections |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7195679A JPS6016889B2 (en) | 1979-06-07 | 1979-06-07 | Molding device for molded bodies with uneven cross sections |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55164110A JPS55164110A (en) | 1980-12-20 |
JPS6016889B2 true JPS6016889B2 (en) | 1985-04-30 |
Family
ID=13475433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7195679A Expired JPS6016889B2 (en) | 1979-06-07 | 1979-06-07 | Molding device for molded bodies with uneven cross sections |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6016889B2 (en) |
-
1979
- 1979-06-07 JP JP7195679A patent/JPS6016889B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS55164110A (en) | 1980-12-20 |
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