JPS58197008A - Structure of discharge pipe of extrusion molding device - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明はセメント・石膏等の無機質原料を補強用の金属
線等と共に押出成形するための押出成形装置に関し、特
に該押出成形装置の吐出管の構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an extrusion molding apparatus for extrusion molding inorganic raw materials such as cement and gypsum together with reinforcing metal wires, etc., and particularly relates to the structure of a discharge pipe of the extrusion molding apparatus.

従来よりセメント・石膏等の自硬性を有する無機質原料
を補強用の金属線等と共に押出成形するための押出成形
装置は特公昭６３−２２０８２号や特公昭５６−３６０
４４号等で公知である。しかし、上記特公昭５３−２２
０８２号公報に記載された押出成形装置は２台の押出機
とＹ字型の吐圧管と口金とを用いるものであり設備の占
有面積か大きくなり且つ設備のコストが高くなる等の欠
点か」しるばかりか、上記２台の押出機に供給される原
料の粘葭や可塑性、史には該押出機の押出し庇力のバラ
ンス等を厳密に一致す′Ｉ！なｔプれは均質な押出成形
品か得られないと言う欠点を生しるものてあり、工業的
に利用プることは困難であった。更に、上記特公昭５６
−３６０４４号公報に：ｃ！ｉ！された押出成形装置は
吐出管内に配設されたガイド体や該突出管自体の形状等
について充分な考慮か成されておら寸、工業的に大量に
且つ均質な押出成形品を得ることは極めて困難であるこ
とかわかったよ 本発明は上記従来の欠点に鑑み案出されたものであり、
以下実施例に従って詳細に説明する。本発明に係る押出
成形装Ｍ　１４ａ第１図に示（如く、押出機２の先１２
１には該押出機２の押出し方向を変位させる曲筑状の吐
出管３か取付けられ該吐出管３の先端３１には口金４が
取付けられた点は従来公知の押出成形装置と同しである
か、該吐出管３は該押出機２の押出し方向に平行な中心
線ａと該吐出管３の吐出方向に平行な中心線すとの２本
の中心線ａ−ｂにより形成される平面に対し上下（第１
図の紙面に対し垂直に上下）に分割可能とし、該吐出管
３にはカイト体５か該ガイド体５の後端５１が該吐出管
３に挟着されることにより固定されると共に、第２図に
示す如く該吐出管３の両側壁を夫々貫通するホルト６・
６等により更に押え板７を介して挟着固定されており、
該吐出管３の一方の内壁３２（第１図に於いて下方乃至
左方の内ｆｆ？’）ｌユ小さな円弧に形成され該押出機
２の押出し方向に平行な該吐出管３の後端３３附近から
該吐出管３の吐出方向に略々平行な先端３１削近に向（
プて杓９０°屈曲ぜしめられ、該内壁３２に対向する内
壁３４（第１図に於いて上方乃至右方の内壁〕は大きな
円弧に形成され該押出し方向に平行な後端３３附近から
一旦９０°以上屈曲ゼしめられた後天に該大きな円弧に
接する小さな円弧によりＲ終的に約９０’屈曲せしめら
れ、該内壁３４は２つの円弧を組合せて形成することに
より該押出機２の押出し方向に交り向する位置に突空部
８を形成し、目つ該内壁３４の接点３５力口ろ先端３１
寄りの小さな円弧は該内壁３２の円弧と同一半径の円弧
とすることにより少なくとも該吐出管３の先端３１削近
の内壁３２・３４は該吐出管３の吐出方向に平行な中心
線りに対し対称に形成されて成るものであり、更に少な
くともカイト体５の先端５２附近はモの外形状を該吐出
管３の吐出方向に平行な中心線すに対し対称な形状とし
、イの対称に形成されたガイド体５の先！Ｉｔｉ５２附
近は該吐出管３の内壁３４の接点３５より先端３１側ｌ
＼臨ませてなり、且つ前記押出１１！２の押出し方向（
こ平行な中心１１！ａと該吐出管３の吐出方向に平（）
な中心線すとによって形成される平面に対して上下方向
にも該吐出管３の内壁３６・３７は少なくとも前モミ２
接点３５より先端３１側に於いて対称であり、同様にカ
イ（ζ体５の先端５２附近の外形も対称である５ｇ、上
の様に構成された吐出管３の先端３１には口金４か取（
＝ｌけられ更に必要に応じて中子９か取付（プられて成
るものである。Conventionally, extrusion molding equipment for extruding self-hardening inorganic raw materials such as cement and gypsum together with reinforcing metal wires, etc. has been disclosed in Japanese Patent Publication No. 63-22082 and Japanese Patent Publication No. 56-360.
It is known as No. 44 etc. However, the above-mentioned special public service
The extrusion molding apparatus described in Publication No. 082 uses two extruders, a Y-shaped discharge pressure pipe, and a die, so it has drawbacks such as a large area occupied by the equipment and a high cost of the equipment. Not only that, but the viscosity and plasticity of the raw materials supplied to the two extruders mentioned above, as well as the balance of the extrusion eaves of the extruders, etc., must be exactly the same! This has the disadvantage that a homogeneous extrusion molded product cannot be obtained, and it has been difficult to use it industrially. Furthermore, the above-mentioned special public service
- In Publication No. 36044: c! i! The extrusion molding equipment developed in this way does not have enough consideration given to the guide body disposed in the discharge tube and the shape of the ejection tube itself, making it extremely difficult to produce homogeneous extruded products in large quantities industrially. The present invention was devised in view of the above-mentioned drawbacks of the conventional technology.
A detailed explanation will be given below according to examples. The extrusion molding apparatus M 14a according to the present invention is shown in FIG.
1 is attached with a curved bamboo-shaped discharge pipe 3 for displacing the extrusion direction of the extruder 2, and a mouthpiece 4 is attached to the tip 31 of the discharge pipe 3, which is the same as the conventional extrusion molding apparatus. Or, the discharge pipe 3 is a plane formed by two center lines a-b, a center line a parallel to the extrusion direction of the extruder 2 and a center line s parallel to the discharge direction of the discharge pipe 3. Up and down (first
The kite body 5 or the rear end 51 of the guide body 5 is fixed to the discharge pipe 3 by being clamped to the discharge pipe 3. As shown in FIG.
6 etc., and is further clamped and fixed via a holding plate 7,
One inner wall 32 of the discharge pipe 3 (lower or left inner wall in FIG. 33 toward the tip 31 that is approximately parallel to the discharge direction of the discharge pipe 3 (
The inner wall 34 facing the inner wall 32 (the inner wall on the upper or right side in FIG. 1) is formed into a large circular arc and is once bent from the vicinity of the rear end 33 parallel to the extrusion direction. After being bent over 90 degrees, the small arc touching the large arc finally bends the inner wall 34 by about 90', and the inner wall 34 is formed by combining two arcs, so that the extrusion direction of the extruder 2 A protruding cavity 8 is formed at a position crossing the inner wall 34, and a contact point 35 of the inner wall 34 is formed at the contact point 35 of the inner wall 34.
By making the small arc with the same radius as the arc of the inner wall 32, at least the inner walls 32 and 34 near the distal end 31 of the discharge pipe 3 are aligned with respect to the center line parallel to the discharge direction of the discharge pipe 3. Furthermore, at least the vicinity of the tip 52 of the kite body 5 has an outer shape symmetrical with respect to the center line parallel to the discharge direction of the discharge pipe 3, and is formed symmetrically as A. The tip of the guide body 5! The vicinity of Iti 52 is located on the tip 31 side of the contact 35 on the inner wall 34 of the discharge pipe 3.
＼facing, and the extrusion direction of the extrusion 11!2 (
This parallel center 11! a and flat ( ) in the discharge direction of the discharge pipe 3
The inner walls 36 and 37 of the discharge pipe 3 are at least close to the front fir 2 in the vertical direction with respect to the plane formed by the center line.
It is symmetrical from the contact point 35 to the tip 31 side, and the outer shape of the ζ body 5 near the tip 52 is also symmetrical. Take (
=1 is cut and the core 9 is attached (pull) as necessary.

以上の如き押出成形装置１を用いて無機質原料を成形す
る場合、該原料は押出機２の投入口（図示せず）より投
入され、押出機２により吐出管３内に押出され、吐出管
３を後端３３側より頓に該原料か埋めてゆくものであり
、該吐出管３に固定されたカイト体５を包むように突空
部８に到達した原料は内壁３４の大きな円弧に治って押
出し方向から吐出方向へ約９０’変位し吐出管３の先端
３１へ向って進み、該吐出管３の内壁３２・３４・３６
・３７により四周から均等に圧迫されながら、更に該カ
イト体５から供給される金属線１０を抱き込むように該
吐出管３の先端３１から口金４に吐出され、該口金４の
先端４１から例えば第３図に示す如き目的形状の成形品
１１がその内部に金属線１０を抱き込んだまま吐出され
るものであり、第１図及び第２図に示した如く中子９を
有する場合は該中子９の形状に合致する空洞部１２を該
成形品１１は有するものとなる。When molding an inorganic raw material using the extrusion molding apparatus 1 as described above, the raw material is inputted from the input port (not shown) of the extruder 2, extruded by the extruder 2 into the discharge pipe 3, and The raw material is suddenly buried from the rear end 33 side, and the raw material that reaches the protruding space 8 so as to wrap around the kite body 5 fixed to the discharge pipe 3 is cured in a large arc of the inner wall 34 and extruded. The inner walls 32, 34, 36 of the discharge pipe 3 are displaced approximately 90' from the direction toward the discharge direction and proceed toward the distal end 31 of the discharge pipe 3.
37, the metal wire 10 supplied from the kite body 5 is further discharged from the tip 31 of the discharge tube 3 to the base 4, and from the tip 41 of the base 4, for example, The molded product 11 having the desired shape as shown in FIG. 3 is discharged with the metal wire 10 encased inside it, and if it has the core 9 as shown in FIGS. The molded product 11 has a cavity 12 that matches the shape of the core 9.

本発明の押出成形装置１によれは、１台の押出機２によ
り成形品１１を押出すようにしたから、２台の押出機の
バランスを微妙に調整する等の技工を要することなく容
易に均質な成形品１１を冑られるばかりか、吐出管３の
内壁３４を押出機２の押出し方向に一旦突出セしめ突空
部８を設けた後、該吐出管３の先端３１側即の内壁３２
・３４・３６・３７を及び該吐出管３の先端３１附近に
臨まされたガイド体５の先端５２附近の外形状を該吐出
管３の吐出方向と平行な中心線すに対し上下及び左右対
称な形状となるように形成したことにより、該押出機２
より押出された原料の一部は該吐出管３の一方の内壁３
２に治って践カイト体５の押出機２側から押出されてく
るのに対し、他の原料は対向する内壁３４の大きな円弧
によって形成された突空部８から該内壁３４に沿ってカ
イト体５の押出１幾２の反対側から押出されてくるもの
となり、該原料は全体として押出機２の押出し方向の力
が打消され、更に該突空部８の先端３１側即ち内壁３４
の大きな円弧と小さな円弧との接点３５より先端３１側
が該カイト体５の外形状も含め完全に吐出方向と平行な
中心線１）に対し対称に形成されているから、該原料は
完全に吐出管３の吐出方向と一致する力のみにより該吐
出管３の先端３１に取付（プられた口金４から押出され
るものとなり、該成形品１１に変形か生じｔ；すするこ
となく均質なものか得られるものである。The extrusion molding apparatus 1 of the present invention extrudes the molded product 11 using one extruder 2, so that it is possible to easily extrude the molded product 11 without requiring any skill such as finely adjusting the balance between the two extruders. Not only is the homogeneous molded product 11 removed, but after the inner wall 34 of the discharge tube 3 is once set to protrude in the extrusion direction of the extruder 2 to form the protruding cavity 8, the inner wall 32 immediately on the tip 31 side of the discharge tube 3 is
34, 36, 37 and the outer shape of the vicinity of the tip 52 of the guide body 5 facing the vicinity of the tip 31 of the discharge pipe 3 is vertically and horizontally symmetrical with respect to the center line parallel to the discharge direction of the discharge pipe 3 By forming the extruder 2 into a shape that
A part of the raw material extruded from the inner wall 3 of the discharge pipe 3
2 and extruded from the extruder 2 side of the kite body 5, while other raw materials are extruded from the protruding cavity 8 formed by the large arc of the opposing inner wall 34 along the inner wall 34. The raw material is extruded from the opposite side of the extrusion 1 and 2 of No.
Since the tip 31 side of the contact point 35 between the large circular arc and the small circular arc is formed completely symmetrically with respect to the center line 1) parallel to the discharge direction, including the outer shape of the kite body 5, the raw material is completely discharged. It is attached to the tip 31 of the discharge pipe 3 only by a force that is consistent with the discharge direction of the pipe 3 (it is extruded from the pulled mouthpiece 4, and the molded product 11 is deformed; it is homogeneous without slipping). This is what you can get.

更に、該吐出管３に固定されたガイ１く体５はその後端
５１か該吐出管３に挟着固定されるのみてはなく、該吐
出管３の側壁を貫通したボルト６・６等により挟着せし
められているから、該吐出管３内の原料の圧力により該
カイト体５から出た金属線１′０等か設計位置よりすれ
た場合、更には該カイト体５自身がずれた場合等も該ボ
ルト６・６を調節することにより容易に該金属線１０の
位置を調整することが可能となったものである。Furthermore, the guy 1 body 5 fixed to the discharge pipe 3 is not only clamped and fixed at the rear end 51 to the discharge pipe 3, but also by bolts 6, etc. that penetrate the side wall of the discharge pipe 3. Because they are clamped, if the metal wire 1'0 etc. coming out of the kite body 5 slips from the designed position due to the pressure of the raw material in the discharge pipe 3, or furthermore, if the kite body 5 itself shifts. etc., the position of the metal wire 10 can be easily adjusted by adjusting the bolts 6.

上記説明に於いてカイト体５は外形状がその中心線りに
対し対称である旨記載したが、例えば第４図に示す如く
３体により構成されていても良く、基体５３に金ｍ綜１
０の供給される溝５４が設けられ、該溝５４を覆うよう
にカバ一体５５・５５が固着されていても良い。更に、
該カイト体５の外形状は押出、１１ 機２の押出し方向に対し直角に交わる面を形成すること
は原料の流れを妨げることとなり好ましく無く、側面を
１中細面己茜・・・とでることか推奨される。In the above description, it has been described that the outer shape of the kite body 5 is symmetrical with respect to its center line, but it may be composed of three bodies as shown in FIG.
A groove 54 to which zero is supplied may be provided, and covers 55 may be fixed to cover the groove 54. Furthermore,
The outer shape of the kite body 5 is formed by extrusion.It is not preferable to form a surface perpendicular to the extrusion direction of the machine 2, as this will impede the flow of the raw material, and the side surface should be formed into a medium-thin side. or recommended.

図示のものは一実施例であることは言うまでもなく、満
５１の位置や斂、該力、イト体５の外形状等は要求され
る成形品１１の性能や形状によって変更されることは当
然τある。ヌ、吐出管３の接点３１）より先端３１側の
内壁３２・３４が同一半径の円弧により形成されている
旨記載したか、該接点３５より先端３１側の内壁３２・
３４は夫々該接点３５より押出機２側の円弧に接する直
線であってもよく、要は該接点３５より先端３１側が該
吐出管３の吐出方向に平行な中ｌい線に罰し対称である
ことを必須とするものである。It goes without saying that what is shown in the drawing is just one example, and it is natural that the position, convergence, force, external shape of the light body 5, etc. may be changed depending on the required performance and shape of the molded product 11. be. Did I mention that the inner walls 32 and 34 on the side of the tip 31 from the contact point 31) of the discharge pipe 3 are formed of circular arcs with the same radius?
Each of 34 may be a straight line that touches the arc on the extruder 2 side from the contact point 35, in short, the tip 31 side from the contact point 35 is symmetrical with respect to a medium line parallel to the discharge direction of the discharge pipe 3. Something that is essential.

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

第１図は本発明に係る押出成形装置の一実施例を示す断
面図であり、第２図は第１図の△−△断面図、第３図は
この押出成形装置により成形される成形品の一例の斜視
図であり、第４図はカイト体の一実施例を示す斜視図で
ある。 図中の１は本発明に係る押出成形装置、２は押出機、３
は吐出管、４は口金、５はカイト体、６はボルトτあり
、８は突空部であるっ 特許出願人　　伊奈製陶株式会礼 代表取締役　伊奈　輝三Fig. 1 is a sectional view showing an embodiment of an extrusion molding apparatus according to the present invention, Fig. 2 is a sectional view taken along the line △-△ of Fig. 1, and Fig. 3 is a molded product molded by this extrusion molding apparatus. FIG. 4 is a perspective view showing an example of the kite body. In the figure, 1 is an extrusion molding apparatus according to the present invention, 2 is an extruder, and 3 is an extrusion molding device according to the present invention.
is the discharge pipe, 4 is the cap, 5 is the kite body, 6 is the bolt τ, and 8 is the protruding part. Patent applicant: Terumi Ina, Representative Director of Ina Seito Co., Ltd.

Claims (1)

【特許請求の範囲】 （１，）押出機の先端に１ユ該押出機の押出し方向を変
位させる曲管状の吐出管が取付けられ該吐出管の先端に
は口金か取付【プられた押出成形装置に於いて、該吐出
管は該押出機の押出し方向ｔこ平行な中心線と該吐出管
の吐出方向に平行な中心線との２本の中心線により形成
される平面（二対し上下に分割可能とし、該吐出管には
ツノイト体か該カイ１〜体の後端が該吐出管に挟着固定
されると共に、該吐出管の両ｌｉ！ｌｌ壁を夫々與通す
るポルｉ・等により挟着固定されており、該吐出管の内
壁は該押出機の押出し方向に対向する位置に突空部を形
成し、目っ該吐出管の先端附近の内壁（ユ該吐出管の吐
出方向に平ｉうな中心線に対し対称に形成されて成るも
のであり、更に少なくともカイ１〜体の先端附近はイの
外形状を該吐出管の吐出方向に平行な中心線に対し対称
な形状とし、ぞの対称に形成さｆｌだカイ１〜体の先端
附近は該吐出管の内壁の接点より先端側へ臨まゼてなり
、目つ前記押出例の押出し方向に平行な中心線と該吐出
管の吐出方向に平行な中心線とによって形成さねる平面
に対して上下方向にも該吐出管の内壁は少なくとも前記
接点より先端側に於いて対称であり、同様にカイ１一体
の先端附近の外形状も対称であることを特徴とする押出
成形装置の吐出管の構造。[Claims] (1,) A curved discharge pipe for displacing the extrusion direction of the extruder is attached to the tip of the extruder, and a mouthpiece is attached to the tip of the discharge tube. In the device, the discharge tube is a plane formed by two center lines: a center line parallel to the extrusion direction t of the extruder, and a center line parallel to the discharge direction of the discharge tube (the two are vertically parallel to each other). The rear end of the body is clamped and fixed to the discharge pipe, and the rear end of the body is clamped and fixed to the discharge pipe. The inner wall of the discharge tube forms a protrusion at a position facing the extrusion direction of the extruder, and the inner wall near the tip of the discharge tube (the inner wall of the discharge tube in the discharge direction of the extruder It is formed symmetrically with respect to a center line parallel to the discharge direction of the discharge pipe, and further, at least in the vicinity of the tip of the body, the outer shape of the discharge pipe is symmetrical with respect to a center line parallel to the discharge direction of the discharge pipe. , are formed symmetrically.The vicinity of the tip of the body faces toward the tip side from the contact point of the inner wall of the discharge tube, and the center line parallel to the extrusion direction of the extrusion example and the discharge tube The inner wall of the discharge pipe is also symmetrical in the vertical direction with respect to the plane formed by the center line parallel to the discharge direction of A structure of a discharge pipe of an extrusion molding device characterized by a symmetrical shape.