JPS60249Y2 - Mold sack for roof tile molding mold - Google Patents

Description

【考案の詳細な説明】 本考案は屋根瓦のプレス成型時に成型キャビテイー内の
脱気を完全に行なわしめる屋根瓦成型金型の金型サック
に関するものである。[Detailed Description of the Invention] The present invention relates to a mold sack for a roof tile molding die that completely deaerates the inside of the molding cavity during press molding of roof tiles.

従来屋根瓦の成型においては、第１図に図示する様に上
型ａと下型ｂとの間に屋根瓦素地Ｃを投入して上型ａ下
面と下型ｂ上面に各々所定の彎曲形状に形成された成型
面ｄ，ｄ’間にて圧縮成型せしめており、又かかる圧縮
成型の際屋根瓦素地Ｃが成型面ｄ， ｄ間より外部へ
喰み出すことを防ぐため上型ａの尻側及び小口側の側壁
に金型サックｅ，ｅ′を、下型ｂの左右側壁には側板ｆ
，ｆ’を夫々取付せしめている。Conventionally, in the molding of roof tiles, as shown in Fig. 1, a roof tile base material C is placed between an upper mold a and a lower mold b, and a predetermined curved shape is formed on the lower surface of the upper mold a and the upper surface of the lower mold b, respectively. Compression molding is performed between the molding surfaces d and d' formed on the upper mold a, and in order to prevent the roof tile base material C from protruding outward from the molding surfaces d and d during such compression molding. Mold sacks e and e' are placed on the side walls of the bottom side and the edge side, and side plates f are placed on the left and right side walls of the lower mold b.
, f' are attached respectively.

而して上記或型面ｄ，ｄ’、金型サツクｅ，ｅ′及ひ側
板ｆ，ｆ’により形成される成型キャビテイーは上型ａ
と下型ｂが圧縮成型の直前において所定距離まで近接し
た時密封状態となって該成型キャビテイー内に一定量の
空気が残留するので、屋根瓦素地Ｃは金型通りの形状に
成型されず、又空気や離型剤が屋根瓦素地Ｃ内に混入し
易く、成型品の品質を低下せしめていた。The molding cavity formed by the mold surfaces d, d', the mold sacs e, e', and the side plates f, f' is the upper mold a.
When the lower mold B approaches to a predetermined distance just before compression molding, it becomes sealed and a certain amount of air remains in the molding cavity, so the roof tile blank C is not molded into the shape of the mold, In addition, air and mold release agent were likely to get mixed into the roof tile base material C, degrading the quality of the molded product.

又かかる残留空気を脱気せしめるため、第２図に図示す
る様に金型サックｅ，ｅ′の内側壁面即ち屋根瓦素地Ｃ
に当接する側の壁面上垂直方向に所定長さの底の浅い脱
気溝ｇ．ｇ’・・・を適宜数没設せしめ、該金型サック
ｅ，ｅ′を上型ａに取付せしめた時脱気荷ｇ，ｇ’下端
が成型キャビテイー内に開口する様戊さしめたものも見
受けられるが、かかる金型サックを用いた場合第４図矢
印にて図示する様に残留空気を脱気ｆＲｇ， ｇ’・・
・の下端より上端まで逃がさねばならないから脱気径路
が長くなり、しかも跳び跳びに没設された脱気溝ｇ．ｇ
・・・の下端部のみが脱気口となるのて脱気口断面積が
非常に小さく、圧縮成型の直前に瞬間的な脱気を十分に
行なうことが出来なかった。In addition, in order to evacuate the residual air, as shown in FIG.
A shallow deaeration groove of a predetermined length in the vertical direction on the wall surface on the side that comes into contact with g. An appropriate number of degassing loads g' and g' are recessed so that when the mold sacks e and e' are attached to the upper mold a, the lower ends of the degassing loads g and g' open into the mold cavity. However, when such a mold sack is used, residual air is removed fRg, g'... as shown by the arrow in Figure 4.
- Since the air has to escape from the lower end to the upper end, the deaeration path becomes longer, and moreover, the deaeration groove is recessed into the jump g. g
Because only the lower end of the mold serves as a degassing port, the cross-sectional area of the degassing port is extremely small, and it was not possible to perform sufficient instantaneous degassing just before compression molding.

本考案は各脱気溝下端方を相互に連通せしめる帯状の凹
部を屋根瓦素地当接予定部壁面の上端縁に沿って隣接状
に設けしめて脱気口断面積を飛躍的に増大せしめると共
に該凹部底面に金型サック壁面を貫通して直接外部に達
する脱気孔を適数貫設せしめて脱気径路を著しく短縮す
ることにより上記欠点を解消せしめたものにして以下本
考案実施の一例を図面に基ついて説明すると、 第３図において１は本考案に係る金型サック、２は該金
型ザック１の内側壁面上に没設せしめた凹部である。The present invention dramatically increases the cross-sectional area of the deaeration port by providing band-shaped recesses that connect the lower ends of each deaeration groove with each other along the upper edge of the wall surface of the portion scheduled to come into contact with the roof tile base. The above-mentioned drawbacks have been solved by providing an appropriate number of degassing holes in the bottom of the recess that penetrate through the wall surface of the mold sack and directly reach the outside, thereby significantly shortening the degassing path. To explain based on this, in FIG. 3, 1 is a mold sack according to the present invention, and 2 is a recessed part sunk into the inner wall surface of the mold sack 1.

該凹部２は成型時に屋根瓦素地３の尻側又は小口側端面
が当接すべき当接予定壁面部Ａの−Ｌ端縁に沿って隣接
する位置（換言すれば金型サック１を上型１３に取付せ
しめた時上型１３の成型面１４と一致する線上に下端縁
を有する状態）に広範囲に渉る帯状に設けられている。The concave portion 2 is located at a position adjacent to the -L edge of the wall surface portion A to which the end surface of the roof tile base 3 is to abut at the time of molding (in other words, the mold sack 1 is placed in the upper mold). 13, the lower end edge is on a line that coincides with the molding surface 14 of the upper mold 13).

又４，４・・・は該凹部２上端部から垂直上方に内側壁
面上端まで達する脱気溝であって前記従来例にむける脱
気溝ｇ、 ｇ’・・・と同様な形状にて適宜数没設され
たものである。Further, 4, 4... are deaeration grooves extending vertically upward from the upper end of the recess 2 to the upper end of the inner wall surface, and are suitably shaped in the same manner as the deaeration grooves g, g'... in the conventional example. It was installed several times.

尚、下端を凹部２に連通しない脱気溝５が一部存在して
も良い。Note that there may be a portion of the deaeration groove 5 whose lower end does not communicate with the recess 2.

又凹部２底面には金型サック１壁部を垂直に貫通して外
側壁面に開［１した所定径の脱気孔６，６′・・・を適
宜数設けｌ〜めている。In addition, an appropriate number of deaeration holes 6, 6', .

尚、７，７′・・・は金型サック１を金型に螺着ぜしめ
る螺孔、８は屋根瓦素地３の尻切退部又は小口切込部に
当接する段部であり、又金型サック１下端力には屋根瓦
素地３の彎曲形状に対応する膨出部９を設けしめている
。In addition, 7, 7'... are screw holes for screwing the mold sack 1 to the mold, 8 is a stepped part that comes into contact with the bottom cut part or the edge cut part of the roof tile base 3, and A bulge 9 corresponding to the curved shape of the roof tile base 3 is provided at the lower end of the mold sack 1.

次に本考案に係る金型サックの使用状態について説明す
ると、左右側壁に側板１０．１０’を固着■１−めた下
型１１の成型面１２上に屋根瓦素地３を投入し、一方尻
側及び小［」側の側壁に金型サック１，１′を螺着せし
めた上型１３を垂直上方より降下せしめて第５図に図示
する様に該金型サック１，１′下端の膨出部９が下型１
１の成型面１２より下方に達した時、上型１３の成型面
１４、下型１１の成型面１２、金型ザック１，１′内側
壁而及び側板１０．１０’内側壁面により密室状の成型
キャビティー１５か形成されるが、金型サック１，１′
内側面に帯状に形成ゼしめた凹部２の１ζ端部が上型１
３の成型面１４に沿って広範囲な一連の脱気口［」部１
６を形成するため成型キードｌニテ４−１５にわける脱
気［−］断面積が飛躍的Ｉこ増大し１、しかも該脱気口
Ｌ」部１６より凹部２中−逃（！た残留空気は一部か脱
気１苗４，４′・・・を通つて外部へ逃げる一方、大部
分は脱気孔６，６′・・・を通って直ちに外部へ逃げる
ことが出来るので脱気径路が著しく短縮腰よって屋根瓦
素地３圧縮戊型時における成型キャビティー１５内の脱
気を瞬間的に且つ完壁に行なわしめることが出来るので
ある。Next, to explain the usage condition of the mold sack according to the present invention, the side plates 10 and 10' are fixed to the left and right side walls. The upper mold 13 with the mold sacks 1, 1' screwed onto the side walls of the side and small side is lowered vertically from above, and the lower ends of the mold sacks 1, 1' are expanded as shown in FIG. The protruding part 9 is the lower mold 1
1, the molding surface 14 of the upper mold 13, the molding surface 12 of the lower mold 11, the inner walls of the mold sacks 1 and 1', and the inner walls of the side plates 10 and 10' form a closed room. A mold cavity 15 is formed, but the mold sacks 1, 1'
The 1ζ end of the belt-shaped recess 2 formed on the inner surface is the upper mold 1.
3. An extensive series of vent holes along the molding surface 14 of the section 1.
6, the cross-sectional area of the molded key 4-15 for degassing increases dramatically. While some of the deaeration escapes to the outside through the deaeration holes 6, 6', etc., most of it can immediately escape to the outside through the deaeration holes 6, 6', etc., so the deaeration path is Due to the extremely shortened length, the air inside the molding cavity 15 can be instantaneously and completely degassed during the compression molding of the roof tile blank 3.

要するに本考案は、屋根瓦成型金型の上型１３に取付せ
しめる金型サック１の内側壁面上において、該金型サッ
ク１を上型１３に取付せしめた時上型１３の成型面１４
と一致する線上に下端縁を有する帯状の凹部２を広範囲
に渉り没設せしめ、且つ該凹部２底面には金型サック１
壁部を垂直に貫通して外側壁面に開口した所定径の脱気
孔６゜６′・・・を適宜数貫設せしめたので、成型キャ
ビティー１５における脱気口断面積が飛躍的に増大する
と共に脱気径路も著しく短縮し、よって屋根瓦素地３圧
縮戊型時における成型キャビティー１５内の脱気を瞬間
的に且つ完壁に行なわしめることが出来、従って成型キ
ャビティー１５内に空気が残留して起こる成型不良や空
気又は離型剤の屋根瓦素地３内への混入による成型品の
品質低下を完全に防止出来、又凹部２上端部から内側壁
面上端まて達する所定形状の脱気溝４．４’・・・を金
型サック１内側壁面上に適宜数没設せしめた場合には上
記諸効果を一層促進することが出来る等、その実用的効
果甚た犬なるものである。In short, the present invention provides a molding surface 14 of the upper die 13 when the mold sack 1 is attached to the upper die 13 on the inner wall surface of the die sack 1 attached to the upper die 13 of the roof tile molding die.
A band-shaped recess 2 having a lower edge on a line that coincides with the line is recessed over a wide range, and a mold sack 1 is provided on the bottom surface of the recess 2.
Since an appropriate number of deaeration holes 6°6'... having a predetermined diameter are vertically penetrated through the wall and opened on the outer wall surface, the cross-sectional area of the deaeration holes in the molding cavity 15 is dramatically increased. At the same time, the degassing path is also significantly shortened, so that the inside of the molding cavity 15 can be instantaneously and completely degassed during the compression molding of the roof tile blank 3. Therefore, the air inside the molding cavity 15 can be It is possible to completely prevent molding defects caused by residual molding and deterioration in the quality of the molded product due to air or mold release agent being mixed into the roof tile base material 3, and also to remove air in a predetermined shape that reaches from the upper end of the recess 2 to the upper end of the inner wall surface. If an appropriate number of grooves 4, 4', etc. are recessed on the inner wall surface of the mold sack 1, the above-mentioned effects can be further promoted, and the practical effects thereof are great.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本考案実施の一例を示ずものにして第１図は金型サ
ックの＝一般的な使用状態を示す斜視図、第２図は従来
の金型ザックを示す斜視図、第３図は本考案に係る金型
サックを示ず斜視図、第４図は従来の金型サックの使用
状態を示す縦断面図、第５図は本考案に係る金型サック
の使用状態を示す縦断面図である。 １・・・・・・金型サック、２・・・・・・凹部、３・
・・・・・屋根瓦素地、４，４′・・・・・・脱気溝、
６，６′・・・・・・脱気孔、１５・・・・・・成型キ
ャヒテイーThe figures do not show an example of the implementation of the present invention; Fig. 1 is a perspective view showing a mold sack in a general usage state, Fig. 2 is a perspective view showing a conventional mold sack, and Fig. 3 is a perspective view showing a conventional mold sack. FIG. 4 is a vertical cross-sectional view showing how the conventional mold sack is used, and FIG. 5 is a vertical cross-sectional view showing how the mold sack according to the present invention is used. It is. 1... Mold sack, 2... Concavity, 3.
... Roof tile base, 4,4' ... Deaeration groove,
6, 6'... Deaeration hole, 15... Molded cavity

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）屋根瓦成型金型の上型に取付せしめる金型サック
の内側壁面上において、該金型サックを上型に取付せし
めた時上型の成型面と一致する線上に下端縁を有する帯
状の凹部を広範囲に渉り没設せしめ、且つ該凹部底面に
は金型サック壁部を垂直に貫通して外側壁面に開口した
所定径の脱気孔を適宜数貫設せしめたことを特徴とする
屋根瓦成型金型の金型サック。(1) On the inner wall surface of the mold sack to be attached to the upper mold of the roof tile molding mold, a band-like shape having a lower edge on a line that coincides with the molding surface of the upper mold when the mold sack is attached to the upper mold. The recess is wide-ranging and recessed, and the bottom of the recess is provided with an appropriate number of deaeration holes of a predetermined diameter that perpendicularly penetrate the mold sack wall and open on the outer wall surface. Mold sack for roof tile molding. （２） 凹部上端部から内側壁面上端縁まて達する所
定形状の脱気溝を金型サック内側壁面上に適宜数没設せ
しめたことを特徴とする請求 載の屋根瓦成型金型のの金型サック。(2) The metal of the roof tile forming mold as claimed, characterized in that an appropriate number of deaeration grooves of a predetermined shape reaching from the upper end of the recess to the upper edge of the inner wall surface are recessed on the inner wall surface of the mold sack. type sack.