JPS5831282B2 - Extrusion manufacturing method for hollow products - Google Patents
Extrusion manufacturing method for hollow productsInfo
- Publication number
- JPS5831282B2 JPS5831282B2 JP18699780A JP18699780A JPS5831282B2 JP S5831282 B2 JPS5831282 B2 JP S5831282B2 JP 18699780 A JP18699780 A JP 18699780A JP 18699780 A JP18699780 A JP 18699780A JP S5831282 B2 JPS5831282 B2 JP S5831282B2
- Authority
- JP
- Japan
- Prior art keywords
- hollow
- mandrel
- extrusion
- molded body
- present
- 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
Description
【発明の詳細な説明】
本発明は中空製品、特に中空セメント板を押出成形によ
り製造する方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the method of manufacturing hollow products, particularly hollow cement boards, by extrusion.
セメント製建築用板として第５図Ａに示すように長手方
向に連続する孔り、ｈ・・・・・・を設げたものが公知
である。As shown in FIG. 5A, there is a known cement construction board provided with longitudinally continuous holes h.
又、かＳる中空セメント板を押出成形することも知られ
ており、第１図はその成形方法を示している。It is also known to extrude hollow cement plates, and FIG. 1 shows this method.
第１図において、１′は押出機であり、ダイ１１′内に
はマンドレル１２′が設けられ、ダイ１１′ とマンド
レル１２′トの空間からセメントの含水混和物が押出さ
れ、中空板状体が成形される。In Fig. 1, 1' is an extruder, a mandrel 12' is provided in a die 11', and a water-containing mixture of cement is extruded from the space between the die 11' and the mandrel 12' to form a hollow plate-like material. is formed.
この成形体は押出機１′の前方（成形体の進行方向）に
設けたカッター２′により定尺切断され、この切断成形
体が養生工程に移送され、養生により製品とされる。This molded body is cut to a fixed length by a cutter 2' provided in front of the extruder 1' (in the direction in which the molded body travels), and this cut molded body is transferred to a curing process, where it is cured into a product.
上記において、中空板状成形体の切断端ａ′の孔りは、
切断時の圧潰のために閉塞されることが往々にしてあり
、従って、この切断端ａ′ と押出機１′までの中空板
状成形体ｂ′の孔は一端が上記閉塞により、他端がマン
ドレル１２′ の先端１２１′によりそれぞれ封孔され
てしまって密閉空間となる。In the above, the hole at the cut end a' of the hollow plate-shaped molded body is
It is often blocked due to crushing during cutting, and therefore, one end of the cut end a' and the hole in the hollow plate-shaped molded body b' up to the extruder 1' are closed due to the above-mentioned blockage, and the other end is closed. Each hole is sealed by the tip 121' of the mandrel 12', resulting in an airtight space.
而るに、中空板状成形体ｂ′は、次の切断が行われるま
で、増長されていくから、上記孔の密閉空間はその密閉
状態のまＳで増長されていき減圧状態となるから、中空
板状体の孔の上下壁（第５図Ａのｃ／、 ｄりが内外圧
力差のために凹む現象が生じるようになる。However, since the hollow plate-shaped molded body b' is extended until the next cutting is performed, the sealed space of the hole is extended at S until the sealed state is reached, and the pressure is reduced. A phenomenon occurs in which the upper and lower walls of the hole in the hollow plate (c/d in Figure 5A) become depressed due to the difference in pressure between the inside and outside.
か＼る凹み現象は製品の外観を損じるから排除する必要
がある。Such a dent phenomenon must be eliminated because it impairs the appearance of the product.
本発明に係る中空製品の押出製造方法は、上記の不利を
解消し得る方法であり、長手方向に連続する孔を有する
中空体を押出成形し、該中空成形体を押出しに連続して
一定長さごとに切断していく方法において、上記孔を成
形する押出機のマンドレルに、そのマンドレル先端に開
放せる空気孔を設けたことを特徴とする方法である。The extrusion manufacturing method for hollow products according to the present invention is a method that can eliminate the above-mentioned disadvantages, in which a hollow body having holes continuous in the longitudinal direction is extruded, and the hollow body is continuously extruded to a certain length. This method is characterized in that the mandrel of the extruder for forming the holes is provided with an air hole that opens at the tip of the mandrel.
以下、図面により本発明を説明する。The present invention will be explained below with reference to the drawings.
第２図は本発明によって製造しようとする中空セメント
製品を示し、長さ方向に連続する孔り。FIG. 2 shows a hollow cement product to be manufactured according to the present invention, with holes continuous in the length direction.
ｈが設げられている。h is provided.
第３図Ａは本発明において使用する押出機の前端部を、
第３図Ｂは第３図Ａにおけるｂ −ｂ断面をそれぞれ示
している。Figure 3A shows the front end of the extruder used in the present invention.
FIG. 3B shows the b-b cross section in FIG. 3A.
第３図Ａ並びに第３図Ｂにおいて、１はダイ、２．２は
マンドレルであり、これはマンドレルホルダー３により
支持されている。In FIGS. 3A and 3B, 1 is a die, 2.2 is a mandrel, and this is supported by a mandrel holder 3.
これらマンドレル２，２は、上記中空セメント製品の孔
り、ｈを成形するためのものであり、本数並びに寸法（
径）は、上記中空セメント製品の孔の個数並びに寸法に
それぞれ一致している。These mandrels 2, 2 are for forming holes, h, in the hollow cement product, and the number and dimensions (
diameter) respectively correspond to the number and size of the holes of the hollow cement product.
４，４は各マンドレル２．２の先端２１に開放せる空気
孔であり、マンドレル２、マンドレルホルダー３を経て
押出機外部に連通している。Reference numerals 4 and 4 designate air holes opened at the tip 21 of each mandrel 2.2, which communicate with the outside of the extruder via the mandrel 2 and the mandrel holder 3.
第４図は本発明において使用する製造ラインを示し、Ｐ
は押出機であり、その前端部の構造は第３図人並びに第
３図Ｂに示した通りである。Figure 4 shows the production line used in the present invention,
is an extruder, and the structure of its front end is as shown in FIG. 3 and FIG. 3B.
５は押出成形体の受取りコンベア、６は移送コンベア、
７はカッターである。5 is a receiving conveyor for extruded molded products, 6 is a transfer conveyor,
7 is a cutter.
本発明によって、第２図に示すセメント中空製品を製造
するには、第４図において、押出機Ｐからセメントの含
水混和物を押出し、この中空押出成形体すを受取りコン
ベア５で受取り、これをカッター７により定尺切断して
いく。In order to manufacture the cement hollow product shown in FIG. 2 according to the present invention, in FIG. The cutter 7 cuts it to a fixed length.
この場合、押出機側の成形体の切断端ａが閉塞されても
、マンドレル先端２１に押出機外部に連通ずる空気孔４
が開放されているから、上記成形体すの中空孔りの内圧
は、常時、大気圧に保たれ得る。In this case, even if the cut end a of the molded product on the extruder side is closed, the air hole 4 at the mandrel tip 21 communicates with the outside of the extruder.
Since the pores are open, the internal pressure of the hollow pores of the molded body can be maintained at atmospheric pressure at all times.
従って、孔の上下壁の内外圧力差による既述の凹み現象
を排除できる。Therefore, the above-mentioned denting phenomenon caused by the difference in pressure between the inside and outside of the upper and lower walls of the hole can be eliminated.
上記定尺切断した中空押出成形体は、移送コンベア６か
も取出し、常法の養生工程等を経て製品とする。The hollow extrusion molded body cut to a specified length is taken out from the transfer conveyor 6, and is made into a product through a conventional curing process and the like.
第５図人並びに第５図Ｂは本発明によって製造する各種
のセメント製建材を示し、第５図人は外壁パネルを、第
５図Ｂは外壁のコーナ部材をそれぞれ示している。Figure 5 and Figure 5B show various cement building materials produced according to the present invention, Figure 5 shows an exterior wall panel, and Figure 5B shows a corner member of the exterior wall.
上述した通り、本発明によれば、中空セメント製品を押
出成形によって製造する場合、孔の上下壁の凹み現象を
確実に排除できるから、外観良好な中空セメント製品な
押出法により連続製造できる。As described above, according to the present invention, when a hollow cement product is manufactured by extrusion molding, it is possible to reliably eliminate the denting phenomenon of the upper and lower walls of the hole, so that a hollow cement product with a good appearance can be continuously manufactured by the extrusion method.
第１図は中空セメント板の従来の押出製造方法を示す説
明図、第２図は本発明によって製造する中空セメント製
品の一例を示す説明図、第３図人は本発明において使用
する押出機の前端部を示す説明図、第３図Ｂは第３図人
におけるｂ−ｂ断面説明図、第４図は本発明において使
用する製造装置を示す説明図、第５図人並びに第５図Ｂ
は本発明によって製造する中空セメント製品の側倒をそ
れぞれ示す説明図である。
図において、Ｐは押出機、１はダイ、２はマンドレル、
３はマンドレルホルダー、４は空気孔、ｂは中空成形体
、ｈ、ｈ・・・は中空成形体の孔、７はカッターである
。Fig. 1 is an explanatory diagram showing a conventional extrusion manufacturing method for hollow cement boards, Fig. 2 is an explanatory diagram showing an example of a hollow cement product manufactured according to the present invention, and Fig. 3 is an explanatory diagram showing an example of a hollow cement product manufactured by the present invention. An explanatory view showing the front end part, Fig. 3B is an explanatory view of the b-b cross section of the person in Fig. 3, Fig. 4 is an explanatory view showing the manufacturing apparatus used in the present invention, Fig. 5 is an explanatory view of the person and Fig. 5B
2A and 2B are explanatory diagrams each showing a side-turning of a hollow cement product manufactured according to the present invention. In the figure, P is an extruder, 1 is a die, 2 is a mandrel,
3 is a mandrel holder, 4 is an air hole, b is a hollow molded body, h, h... are holes in the hollow molded body, and 7 is a cutter.
Claims (1)
、該中空成形体を押出しに連続して一定長さごとに切断
していく方法において、上記孔な成形する押出機のマン
ドレルに、そのマンドレル先端に開放せる空気孔を設け
たことを特徴とする中空製品の押出製造方法。1. In a method of extrusion molding a hollow body having holes continuous in the longitudinal direction, and cutting the hollow molded body into pieces of constant length continuously during extrusion, An extrusion manufacturing method for hollow products characterized by providing an air hole that can be opened at the tip of a mandrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18699780A JPS5831282B2 (en) | 1980-12-27 | 1980-12-27 | Extrusion manufacturing method for hollow products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18699780A JPS5831282B2 (en) | 1980-12-27 | 1980-12-27 | Extrusion manufacturing method for hollow products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57109604A JPS57109604A (en) | 1982-07-08 |
| JPS5831282B2 true JPS5831282B2 (en) | 1983-07-05 |
Family
ID=16198390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18699780A Expired JPS5831282B2 (en) | 1980-12-27 | 1980-12-27 | Extrusion manufacturing method for hollow products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5831282B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI70821C (en) * | 1983-05-09 | 1986-10-27 | Partek Ab | FOER FAR SHEET FOR GLID GUTTING MACHINE AV HAOLPLATTOR AVETONG |
| JP4909226B2 (en) * | 2007-09-28 | 2012-04-04 | ケイミュー株式会社 | Extrusion mold |
| JP4909227B2 (en) * | 2007-09-28 | 2012-04-04 | ケイミュー株式会社 | Extrusion mold |
| JP4909228B2 (en) * | 2007-09-28 | 2012-04-04 | ケイミュー株式会社 | Extrusion mold |
| JP5952684B2 (en) * | 2012-08-31 | 2016-07-13 | ケイミュー株式会社 | Cement board manufacturing method |
-
1980
- 1980-12-27 JP JP18699780A patent/JPS5831282B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57109604A (en) | 1982-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NZ219682A (en) | Extruding smooth-bore pipes with external ribs | |
| US4453367A (en) | Honeycomb core material and sandwich construction structural building materials incorporating same | |
| DE3852898D1 (en) | Process for the production of hollow bodies made of thermoplastic material with a multi-layer wall. | |
| GB1224699A (en) | Improvements in or relating to a method and apparatus for continuously manufacturing foamed plastic profiles | |
| JPS5831282B2 (en) | Extrusion manufacturing method for hollow products | |
| JPS615915A (en) | Continuous extrusion of honeycomb molding and continuous extruding die used therefor | |
| JPS58205746A (en) | Production of extruded formed article of synthetic resin | |
| JPS5695659A (en) | Production of head rest or the like | |
| EP0252040A3 (en) | Method and device for the scrap-free manufacture of coated profiles and thermally shaped containers | |
| US3530535A (en) | Linear extruding apparatus | |
| JPS6330850B2 (en) | ||
| JPH0872123A (en) | Hollow synthetic resin panel and extrusion die for hollow synthetic resin panel | |
| JPS5856827A (en) | Molding method of hollow article with partition plate | |
| JPS5845852Y2 (en) | Mold for shaping cement-based mixtures | |
| JPS5947644B2 (en) | Manufacturing method for plastic material laminated extrusion molded products | |
| JPS597050Y2 (en) | Molding mold for extrusion molding equipment for inorganic kneaded materials | |
| JPS5838085B2 (en) | Extrusion molding method for inorganic building materials with uneven patterns | |
| JPS57148629A (en) | Method and apparatus for manufacturing or ribbed currugated tube | |
| JPH05329817A (en) | Production of accessory tile | |
| JPH08252814A (en) | Manufacture of extrusion-molded plate | |
| JPH0138650B2 (en) | ||
| JPS5890926A (en) | Molding method of hollow body | |
| JPS6233603A (en) | Extrusion molding method of inorganic product | |
| JPS6048321B2 (en) | Method for manufacturing a product with a reinforcing core | |
| TH2700A (en) | A method for producing hollow parts by extruding and blowing plastic materials and units for manufacturing them. |