JPS62116110A - Core structure of centrifugal molding machine - Google Patents

Core structure of centrifugal molding machine

Info

Publication number
JPS62116110A
JPS62116110A JP25726785A JP25726785A JPS62116110A JP S62116110 A JPS62116110 A JP S62116110A JP 25726785 A JP25726785 A JP 25726785A JP 25726785 A JP25726785 A JP 25726785A JP S62116110 A JPS62116110 A JP S62116110A
Authority
JP
Japan
Prior art keywords
core
wedge body
shape
molding machine
centrifugal molding
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.)
Granted
Application number
JP25726785A
Other languages
Japanese (ja)
Other versions
JPH0651286B2 (en
Inventor
神前 一郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP60257267A priority Critical patent/JPH0651286B2/en
Publication of JPS62116110A publication Critical patent/JPS62116110A/en
Publication of JPH0651286B2 publication Critical patent/JPH0651286B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

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】 (イ) 産業上の利用分野 この発明は、遠心成型機の中子構造に関する。[Detailed description of the invention] (b) Industrial application field The present invention relates to a core structure for a centrifugal molding machine.

(ロ) 従来の技術 従来、遠心成型機に取付レノで、遠心力を利用して混練
コンリートの注型を行って、中空筒状のコンクリート成
形品を製造する型枠にIIi+、上記中空筒状部を形成
するための中子が用いられており、同中子は、コンクリ
ートの成型後、同コンクリート中から抜ぎ取るために、
同中子をテーパー状に形成して長手方向の扱き勾配を設
けていた。
(b) Conventional technology Conventionally, a mold installed in a centrifugal molding machine is used to cast kneaded concrete using centrifugal force to produce a hollow cylindrical concrete molded product. A core is used to form the part, and the core is removed from the concrete after it is formed.
The core was formed into a tapered shape to provide a handling gradient in the longitudinal direction.

(ハ) 発明が解決しようとする問題点しかしながら、
遠心成型による成形コンクリートは、重力の数十倍の圧
力で圧密されているため、中子と成型コンクリートとが
密着して摩擦抵抗が高くなって、中子が引抜きにくくな
り、中子引抜き作業中に、成型コンクリートが破壊され
ることがあった。
(c) Problems that the invention seeks to solveHowever,
Formed concrete produced by centrifugal molding is consolidated under pressure several tens of times greater than gravity, so the core and molded concrete come into close contact, creating high frictional resistance and making it difficult to pull out the core, causing problems during the core removal process. In some cases, molded concrete was destroyed.

〈二) 問題点を解決するための手段 この発明では、中子を略筒状に形成して同中子の外周壁
に長子方向のり欠間口部を設け、同開口部に中子の内側
からクサビ体を嵌入して、クサビ体の先端面にて切欠開
口部における中子の外形を補完せしめ、同中子の内部に
テーパー状に形成した支持棒体を挿通して、同棒体の側
面にてクサビ体を中子の内側から支持して中子の外形を
保持すべく構成してなる中空筒状コンクリート成型用の
遠心成型機の中子構造を提供するものである。
(2) Means for Solving the Problems In this invention, the core is formed into a substantially cylindrical shape, and the outer circumferential wall of the core is provided with a slotted opening in the longitudinal direction, and the opening is opened from the inside of the core. A wedge body is inserted, the tip surface of the wedge body complements the outer shape of the core at the notch opening, and a support rod formed in a tapered shape is inserted into the inside of the core, and the side surface of the rod is The present invention provides a core structure for a centrifugal molding machine for molding hollow cylindrical concrete, which is configured to support a wedge body from the inside of the core to maintain the outer shape of the core.

(ホ) 作用・効果 この発明にJ:れば、中子の切欠開口部に内側からり1
Jビ体を嵌入し、内側からテーパー状支持棒体の側面に
てクサビ体を支持しているので、中子の外形は、中子単
独のときよりら若干拡張しており、遠心成型後、成型コ
ンクリートから中子を扱き取る際、テーパー状の支持棒
体を扱き去り、クサビ体を中子の内部に陥没させると、
中子の外形が収縮し、成型コンクリートと中子外周面と
の密着が剥離して中子の1友取りが容易になり、同作業
時の製品の破損が防止される。
(E) Functions and Effects According to this invention, there is an inner 1 in the notch opening of the core.
Since the J-shaped body is inserted and the wedge body is supported from the inside by the side surface of the tapered support rod, the outer shape of the core is slightly expanded compared to when the core is alone, and after centrifugal molding, When removing the core from the molded concrete, remove the tapered support rod and sink the wedge into the core.
The outer shape of the core shrinks and the adhesion between the molded concrete and the outer circumferential surface of the core is separated, making it easier to remove one piece of the core and preventing damage to the product during the same operation.

また、クサビ体は、内側から支持棒体によって支持され
ているので、遠心成型時の強大な圧力に耐えることがで
きる。
Moreover, since the wedge body is supported from the inside by the support rod, it can withstand the enormous pressure during centrifugal molding.

更に、上記のように中子外形を収縮させて抜き取りを行
うのであるから、中子外形に抜き勾配をつける必要がな
く、肉厚一定の中空筒状コンクリート成形品を作ること
ができる。
Furthermore, since the outer shape of the core is shrunk and extracted as described above, there is no need to provide a draft angle to the outer shape of the core, and a hollow cylindrical concrete molded product with a constant wall thickness can be produced.

なお、支持棒体の抜き取りは、中子の金属同志の摺動で
あり、しかもテーパーが付与されているので極めて容易
に行われる。
Note that the support rod can be removed very easily by sliding the metal members of the core together, and since it is tapered.

(へ) 実施例 本発明の実施例を図面にもとずき詳説すれば、(A)は
遠心成型機を示し、モーターに連結した油圧ポンプ(1
)からの油圧により、星型の油圧モーター(2)を回転
せしめ、同モーター(2)の回転作動を連動機構(3)
を介して回転主軸(4)の一端に伝達し、同主軸(4)
の他端には回転円板(5)を連設し、同円板(5)の外
側面に複数のアーム(6)の基端(7)を放射状等間隔
に連設し、同アーム(6)の中途部(8)にて略り字形
状に前方向に屈折してアーム(6)の先端部〈9)を形
成している。同先端部(9)の内側面(10)は平面状
で回転主軸(4)の軸芯と平行に設定されており、複数
のアーム(6)先端部の内側面(10)にて回転枠体(
11)の外周面(12)に当接している。
(F) Embodiment An embodiment of the present invention will be described in detail based on the drawings. (A) shows a centrifugal molding machine, and a hydraulic pump (1) connected to a motor.
) rotates the star-shaped hydraulic motor (2), and the rotational operation of the motor (2) is linked to the interlocking mechanism (3).
to one end of the rotating main shaft (4) through the main shaft (4).
A rotary disk (5) is connected to the other end, and base ends (7) of a plurality of arms (6) are connected to the outer surface of the disk (5) at equal radial intervals. The arm (6) is bent forward at the midway portion (8) into an abbreviated shape to form a distal end portion (9) of the arm (6). The inner surface (10) of the tip (9) is planar and parallel to the axis of the main rotation shaft (4), and the inner surface (10) of the tip of the plurality of arms (6) forms a rotating frame. body(
11) is in contact with the outer circumferential surface (12).

回転枠体(11)は、中央部に円孔を穿設した略円板状
の内枠(13)と外枠(14)との間に、コンクリート
製の断面略三角形中空筒状の階段ブロック(B)を形成
するための型枠(15)多数を架設状に配設して、全体
として略円筒状の回転体形状に構成しており、型枠(1
5)の上記ブロック(r3)の一端に当る部分を回転枠
体(11)の内部方向に開放して、同枠体(11)の内
部に1人した混線コンクリートがこの開放部を介して型
枠(15)内部に流入し、回転主軸(4)から伝達され
た回転枠体(11)の回転により発生ずる遠心力により
混練コンクリートを型枠(15)内部に圧入して、緻密
かつ強固なコンクリート製品を成型するものである。
The rotating frame body (11) has a hollow cylindrical stair block made of concrete with a substantially triangular cross section between an inner frame (13) having a circular hole in the center and an outer frame (14). A large number of formworks (15) for forming the formwork (15) are arranged in an erected manner, and the overall shape is a substantially cylindrical rotating body.
The part corresponding to one end of the block (r3) in 5) is opened toward the inside of the rotating frame (11), and the mixed concrete placed inside the frame (11) passes through this open part to the mold. Mixed concrete flows into the frame (15) and is press-fitted into the form (15) by the centrifugal force generated by the rotation of the rotating frame (11) transmitted from the rotating main shaft (4) to form a dense and strong concrete. It is used to mold concrete products.

型枠(15)は、断面略三角形筒状に形成されており、
同型枠(15)の三角形状の1隅角を切除して、回転枠
体(11)の内部に間口(15a)せしめており、同型
枠(15)の内部には、外形が略三角形筒状の中子(1
6)を収容している。
The formwork (15) is formed into a cylindrical shape with a substantially triangular cross section,
One corner of the triangular shape of the frame (15) is cut out to create a frontage (15a) inside the rotating frame (11), and the inside of the frame (15) has a substantially triangular cylindrical outer shape. Core (1)
6).

中子(16)は、外形が略三角形筒状であり、型枠(1
5)の内部を同型枠(15)の全長にわたって挿通して
おり、中子(16)の三角形状の一辺に当る中央部の外
周壁(16b)には、内部に向って切口断面が次第に拡
幅した略鳩尾形状断面の切欠開口部(16a)が長手方
向に形成されており、同切欠開口部(16a)には内側
からクサビ体(17)を嵌入している。
The core (16) has a substantially triangular cylindrical outer shape, and is attached to the formwork (16).
5) is inserted through the entire length of the formwork (15), and the central outer peripheral wall (16b) corresponding to one side of the triangular shape of the core (16) has a cut cross section that gradually widens toward the inside. A notch opening (16a) having a substantially dovetail-shaped cross section is formed in the longitudinal direction, and a wedge body (17) is fitted into the notch opening (16a) from the inside.

クサビ体(17)は略台形状断面筒状であり、同タサビ
体〈17)の先端面<178)にて、切欠開口部(16
a)にお(プる中子(1G)の外形を補完させている。
The wedge body (17) has a substantially trapezoidal cross-section and is cylindrical, and has a notch opening (16
a) The outer shape of the pull core (1G) is complemented.

なお、クサビ体(17)嵌入前の中子(1G)の外形は
中子(16)の弾力性ににす、定められた外形よりも若
干収縮しており、クナビ体(17)の嵌入によって同外
形を拡張せしめて定められた外形の中子(16)として
いる。
In addition, the outer shape of the core (1G) before the wedge body (17) is inserted is slightly smaller than the specified outer shape due to the elasticity of the core (16), and due to the insertion of the wedge body (17), The same outer shape is expanded to form a core (16) with a defined outer shape.

クサビ体(17)の内側端面(17b)には、支持棒体
(18)が当接して、同棒体(18)によりクサビ体(
17)を外側方向に抑圧状態で支持している。
The support rod (18) is in contact with the inner end surface (17b) of the wedge body (17), and the wedge body (17) is supported by the support rod (18).
17) is supported in a suppressed state in the outward direction.

支持棒体(18)は、略菱形断面筒状であり、基端(1
8a)から先端(18b)にかけて先細り状のデーパー
が形成されており、クサビ体(17)との当接部分には
略方形状断面の支持台(18G)を形成している。
The support rod (18) has a cylindrical shape with a substantially rhombic cross section, and has a base end (1
A tapered taper is formed from 8a) to the tip (18b), and a support base (18G) with a substantially rectangular cross section is formed at the portion that contacts the wedge body (17).

かかる支持棒体く18)を挿通して、同棒体(18)に
てクサビ体(17)を内部から支持するために、中子(
16)の内部には、支持棒体(18)の断面菱形のデー
パ−形状と符合する形状の棒体挿通孔(19)が形成さ
れており、回礼(19)は、略り字形状断面の支持材(
19a)(19b )(19c )(19d )を、中
子(16)の内周面に固着して形成されている。
In order to insert the support rod (18) and support the wedge body (17) from the inside with the rod (18), the core (18) is inserted.
16) is formed with a rod insertion hole (19) having a shape that matches the tapered rhombic cross section of the support rod (18). Support material (
19a), (19b), (19c), and (19d) are fixed to the inner peripheral surface of the core (16).

そして、上記のように構成した中子(16)を内蔵した
型枠(15)多数を連結して、型枠〈15)の間口部(
15a>を内側とした略円筒形状の回転枠体(11)を
構成している。
Then, a large number of formworks (15) containing cores (16) configured as described above are connected, and the frontage of the formwork (15) (
It constitutes a rotating frame (11) having a substantially cylindrical shape with 15a> inside.

なお、図中(20)は、回転枠体(11)を組立てる際
、隣接型枠との間に一定間隔を保持するためのスペーサ
ー、(21)は同ブロック(B)にて階段を築造する際
の位置決め用凹部、〈22)は中子(16)を拡張・収
縮しやすくさせめための凹状を示す。
In addition, (20) in the figure is a spacer for maintaining a constant distance between the rotating frame (11) and the adjacent formwork when assembling, and (21) is a spacer used to construct stairs using the same block (B). The positioning recess (22) is a concave shape that allows the core (16) to expand and contract easily.

上記のように構成した回転枠体(11)を遠心成型機(
Δ)に装着して、階段ブロック(B)を成型するもので
あるが、成形品の脱型作業は次のちょうにして行われる
The rotating frame (11) configured as described above is put into a centrifugal molding machine (
Δ) to mold the stair block (B), and demolding of the molded product is carried out as follows.

まず、回転枠体(11)を遠心成型機(A>から取外し
、中子(16)の支持棒体(18)の基端(18a)が
上方になるように地上に載置する。
First, the rotating frame (11) is removed from the centrifugal molding machine (A>) and placed on the ground so that the base end (18a) of the support rod (18) of the core (16) faces upward.

次いで、クレーン等にて支持棒体(18)を中子(16
)中の棒体挿通孔(19)から上方に引き扱く。なお、
同棒体(18)と同挿通孔(19)の支持材(19a 
>(19b )(19c )(19d)とはいずれも金
属同志の接触であり、しかも同棒体(18)にテーパー
が付与されているので容易に引扱くことができる。
Next, the support rod (18) is moved to the core (16) using a crane or the like.
) upwardly through the rod insertion hole (19). In addition,
Support material (19a) for the rod (18) and the insertion hole (19)
> (19b), (19c), and (19d) are all metal-to-metal contacts, and since the rod (18) is tapered, it can be easily handled.

次いで、クサビ体(17)を中子(16)の内部に陥没
させて中子(16)の外形を収縮させると、中子(16
)の外周面と、階段ブロック(B)の内周面との間の密
着が剥離して、中子(16)がフリーとなり、フリーと
なった中子(16)を上方へ引き抜く。特にこの引抜き
作業は、フリーとなった中子(16)を引き抜くのであ
るから作業の困難は全くなく製品の破IQ ′9b−切
生じない。
Next, when the wedge body (17) is depressed into the inside of the core (16) and the outer shape of the core (16) is contracted, the core (16)
) and the inner peripheral surface of the stair block (B) are separated, the core (16) becomes free, and the free core (16) is pulled out upward. In particular, this drawing operation involves pulling out the free core (16), so there is no difficulty in the operation and no damage to the product occurs.

なお、クサビ体(17〉の陥没が渋いときは、ハンマー
等でクサビ体(17)に軽く衝撃を与えるとよい。
In addition, if the wedge body (17) is difficult to cave in, it is better to give a slight impact to the wedge body (17) with a hammer or the like.

上記のように中子(16)を引き扱いた回転枠体(11
)は分解され、型枠(15)を分解して内部の階段ブロ
ック(B)を取り出すものである。
The rotating frame (11) that handles the core (16) as described above
) is disassembled, and the formwork (15) is disassembled to take out the internal stair block (B).

第5、第6図に示すものは、中空コンクリートの中空断
面形状を、それぞれ方形筒状及び円形筒状とするための
他実施例の中子を示し、本実施例と同様に、中子(23
)の弾力性により幾分収縮した外形を、クサビ体(24
)の切欠間口部(25)への嵌入により拡張せしめて定
められた外形となるようにし、同タサビ体(24)をテ
ーパー状支持棒体(26)にて内部から支持せしめたも
のであり、中子(23)の抜き取り作業は、本実施例の
もと同様極めて容易に行うことができる。
5 and 6 show cores of other embodiments for making the hollow cross-sectional shapes of hollow concrete into rectangular cylindrical shapes and circular cylindrical shapes, respectively. 23
) is shaped like a wedge body (24
) is inserted into the notch opening (25) so as to be expanded to have a predetermined external shape, and the tussock body (24) is supported from the inside by a tapered support rod (26), The work of extracting the core (23) can be performed extremely easily as in the present embodiment.

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

第1図は、本発明による中子構造を有する遠心成型機の
全体側面図 第2図は、同正面図 第3図は、型枠及び中子の拡大断面図 第4図は、第3図I−I断面図 第5図、第6図は他実施例 (16):中子 (16a):同切欠開口部 (16b):同外周壁 <17):クサビ体 (17a):同先端面 (18):支持棒体 特許出願人  神  前     部 代  理  人   松  尾   憲  −部第2図 第5[!1 第・6図
FIG. 1 is an overall side view of a centrifugal molding machine having a core structure according to the present invention. FIG. 2 is a front view thereof. FIG. 3 is an enlarged sectional view of the mold and core. I-I cross-sectional diagrams FIGS. 5 and 6 show another example (16): Core (16a): Notch opening (16b): Outer peripheral wall <17): Wedge body (17a): End surface (18): Support rod patent applicant Ken Matsuo - Section 2, Figure 5 [! 1 Figure 6

Claims (1)

【特許請求の範囲】[Claims] 1)中子(16)を略筒状に形成して、同中子(16)
の外周壁(16b)に長手方向の切欠開口部(16a)
を設け、同開口部(16a)に中子(16)の内側から
クサビ体(17)を嵌入して、クサビ体(17)の先端
面(17a)にて切欠開口部(16a)における中子(
16)の外形を補完せしめ、同中子(16)の内部にテ
ーパー状に形成した支持棒体(18)を挿通して、同棒
体(18)の側面にてクサビ体(17)を中子(16)
の内側から支持して、中子(16)の外形を保持すべく
構成してなる中空筒状コンクリート成型用の遠心成型機
の中子構造。
1) The core (16) is formed into a substantially cylindrical shape, and the core (16)
A longitudinal notch opening (16a) in the outer peripheral wall (16b) of the
The wedge body (17) is inserted into the opening (16a) from the inside of the core (16), and the core at the notch opening (16a) is inserted at the tip surface (17a) of the wedge body (17). (
16), insert the support rod (18) formed into a tapered shape into the inside of the core (16), and insert the wedge body (17) in the center on the side of the rod (18). Child (16)
A core structure for a centrifugal molding machine for molding hollow cylindrical concrete, which is configured to support the core (16) from the inside and maintain the outer shape of the core (16).
JP60257267A 1985-11-15 1985-11-15 Core structure of centrifugal molding machine Expired - Lifetime JPH0651286B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60257267A JPH0651286B2 (en) 1985-11-15 1985-11-15 Core structure of centrifugal molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60257267A JPH0651286B2 (en) 1985-11-15 1985-11-15 Core structure of centrifugal molding machine

Publications (2)

Publication Number Publication Date
JPS62116110A true JPS62116110A (en) 1987-05-27
JPH0651286B2 JPH0651286B2 (en) 1994-07-06

Family

ID=17304005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60257267A Expired - Lifetime JPH0651286B2 (en) 1985-11-15 1985-11-15 Core structure of centrifugal molding machine

Country Status (1)

Country Link
JP (1) JPH0651286B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255488U (en) * 1975-10-16 1977-04-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5255488U (en) * 1975-10-16 1977-04-21

Also Published As

Publication number Publication date
JPH0651286B2 (en) 1994-07-06

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