JP5770535B2 - Method for manufacturing pipe-making member - Google Patents

Method for manufacturing pipe-making member Download PDF

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JP5770535B2
JP5770535B2 JP2011124184A JP2011124184A JP5770535B2 JP 5770535 B2 JP5770535 B2 JP 5770535B2 JP 2011124184 A JP2011124184 A JP 2011124184A JP 2011124184 A JP2011124184 A JP 2011124184A JP 5770535 B2 JP5770535 B2 JP 5770535B2
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substrate
ribs
pipe
reinforced
metal fitting
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JP2012250414A (en
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将 中垣
将 中垣
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Sekisui Chemical Co Ltd
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Description

本発明は、螺旋状に巻き回されることによって管状に製管される製管用部材の製造方法に関する。   The present invention relates to a method for manufacturing a tube-forming member that is formed into a tubular shape by being spirally wound.

従来、老朽化した下水管路、上水管路、農業用水路、ガス管路などの既設管を更生する方法として、既設管内において長尺帯状の製管用部材を螺旋状に巻き回し、先行する帯状部材の一側縁部と周回遅れで後続する製管用部材の他側縁部とを順次接合することにより既設管の管路内に更生管を製管する方法が提案されている。   Conventionally, as a method of rehabilitating existing pipes such as aging sewer pipes, water pipes, agricultural water pipes, gas pipes, etc., a long strip-shaped pipe-forming member is spirally wound in the existing pipe, and the preceding belt-like member A method has been proposed in which a rehabilitated pipe is formed in a pipe line of an existing pipe by sequentially joining one side edge part and the other side edge part of a pipe-forming member that follows with a delay in circulation.

図１１に示すように、既設管５００内に更生管１３０を形成するにあたっては、製管用部材１が巻き付けられた巻取ドラム９１を地上に配すると共に既設管５００内に製管装置１１０を配置する。巻取ドラム９１から繰り出された製管用部材１は、発進側立坑５１０を介して、製管装置１１０に供給される。製管装置１１０は、連続的に供給される製管用部材１を螺旋状に巻回すことによって、先行する製管用部材１の一側縁と周回遅れで後続する製管用部材１の他側縁とを隣接させながら、前記一側縁と前記他側縁とを順次接合することによって、製管用部材１が螺旋状に付加形成された更生管１３０を順次残置しながら到達側立坑５２０に向かって移動する。製管装置１１０は、製管装置１１０の移動方向前方に配置された油圧ユニット９３から供給される圧油によって駆動する。又、油圧ユニット９３は、地上に配された発電機９２から供給される電力によって駆動する。   As shown in FIG. 11, when forming the rehabilitation pipe 130 in the existing pipe 500, the winding drum 91 around which the pipe making member 1 is wound is arranged on the ground and the pipe making apparatus 110 is arranged in the existing pipe 500. To do. The pipe making member 1 fed out from the winding drum 91 is supplied to the pipe making apparatus 110 through the start side shaft 510. The pipe making apparatus 110 spirally winds the continuously supplied pipe making member 1, and the one side edge of the preceding pipe making member 1 and the other side edge of the pipe making member 1 that follows with a delay in circulation. The one side edge and the other side edge are sequentially joined while adjoining each other, so that the pipe-making member 1 moves toward the arrival side shaft 520 while sequentially leaving the rehabilitated pipe 130 additionally formed in a spiral shape. To do. The pipe making apparatus 110 is driven by pressure oil supplied from a hydraulic unit 93 disposed in front of the pipe making apparatus 110 in the moving direction. The hydraulic unit 93 is driven by electric power supplied from a generator 92 arranged on the ground.

この方法に用いられる製管用部材１としては、図１２（ａ）に示すような、長尺帯状の基板２１と、前記基板２１の表面２１１の長さ方向に沿って複数条設けられたリブ２３と、前記複数条のリブ２３から選択された二条の被補強リブ２３０の内側壁２３３間に嵌め込み固定された補強金具３とを具備するものが開発されている（例えば、下記特許文献１参照。）。   As the pipe-making member 1 used in this method, as shown in FIG. 12A, a long strip-shaped substrate 21 and a plurality of ribs 23 provided along the length direction of the surface 211 of the substrate 21. And a reinforcing metal fitting 3 fitted and fixed between the inner side walls 233 of the two ribs to be reinforced 230 selected from the plurality of ribs 23 have been developed (see, for example, Patent Document 1 below). ).

前記リブ２３は、前記製管用部材１が更生管１３０に製管された際に、更生管１３０の強度を増すものである。又、前記補強金具３は、前記リブ２３（特に、被補強リブ２３０）を補強し、更生管１３０の強度を更に向上させる役割を担うものである。前記被補強リブ２３０には、その遊端において両側に向かって突出する軒部２３１が備えられており、補強金具３は、対向する一対の側板部３１の遊端がそれぞれ軒部２３１の下面に引っ掛かった状態で、前記二条の被補強リブ２３０間に嵌め込み固定されている。   The rib 23 increases the strength of the rehabilitating tube 130 when the tube-making member 1 is formed on the rehabilitating tube 130. The reinforcing metal fitting 3 serves to reinforce the ribs 23 (particularly the ribs 230 to be reinforced) and further improve the strength of the rehabilitated pipe 130. The reinforced rib 230 is provided with eaves 231 projecting toward both sides at the free end thereof, and the reinforcing metal fitting 3 has the free ends of the pair of side plate portions 31 facing each other on the lower surface of the eaves 231. In the hooked state, the two reinforcing ribs 230 are fitted and fixed.

ところで、更生管１３０の製管時においては、既設管５００内に螺旋状に巻き回されながら供給される製管用部材１に対して捻り応力が常に負荷されており、この捻り応力を受けた際、二条の被補強リブ２３０が互いに開く方向に傾き、補強金具３が外れる場合がある（図１２（ｂ）参照）。   By the way, when the rehabilitated pipe 130 is manufactured, a torsional stress is always applied to the pipe-forming member 1 that is supplied while being spirally wound in the existing pipe 500. In some cases, the two ribs 230 to be reinforced are inclined in a direction to open each other, and the reinforcing metal fitting 3 is detached (see FIG. 12B).

製管時において生じる捻り応力によって補強金具３が外れることを防止するためには、前記各軒部２３１の一端にそれぞれ前記基板２１の表面２１１に向かって突出する返し部２３２を設け、係る返し部２３２と被補強リブ２３０の内側壁２３３との間に、補強金具３における一対の側板部３１の遊端を差し入れることによって、補強金具３の抜け止めを図る手段が考えられる（図１３参照）。   In order to prevent the reinforcing metal fitting 3 from coming off due to a torsional stress generated during pipe making, a return portion 232 protruding toward the surface 211 of the substrate 21 is provided at one end of each eave portion 231, and the return portion. A means for preventing the reinforcing metal fitting 3 from coming off by inserting the free ends of the pair of side plate portions 31 of the reinforcing metal fitting 3 between the H.232 and the inner wall 233 of the reinforcing rib 230 can be considered (see FIG. 13). .

特開平１１‐２３５７５７号公報JP 11-235757 A

ここで、軒部２３１に設けられた返し部２３２の突出距離が大きくなればなるほど、補強金具３の抜け止めはより確実となる。しかしながら、軒部２３１に設けられた返し部２３２の突出距離が大きくなれば、製管用部材１の製造時において、返し部２３２と被補強リブ２３０の内側壁２３３との間に、補強金具３における一対の側板部３１の遊端を差し入れることが困難となる。   Here, as the protruding distance of the return portion 232 provided on the eave portion 231 increases, the reinforcing metal fitting 3 is more reliably prevented from coming off. However, if the protruding distance of the return portion 232 provided on the eave portion 231 is increased, the reinforcing metal fitting 3 is interposed between the return portion 232 and the inner side wall 233 of the reinforcing rib 230 at the time of manufacturing the pipe-making member 1. It becomes difficult to insert the free ends of the pair of side plate portions 31.

本発明は、前記技術的課題を解決するために開発されたものであって、製管時において捻り応力が負荷されても補強金具が外れ難い製管用部材の製造方法を提供することを目的とする。   The present invention was developed to solve the technical problem, and an object of the present invention is to provide a method for manufacturing a pipe-making member in which a reinforcing metal fitting is difficult to come off even when a torsional stress is applied during pipe-making. To do.

本発明の製管用部材の製造方法は、長尺帯状の基板と、前記基板の表面の長さ方向に沿って設けられた複数条のリブと、前記複数条のリブから選択された二条の被補強リブの対向する内側壁、又は頂点にそれぞれ設けられた、互いに対向する方向に突出する一対の軒部と、前記各軒部の一端にそれぞれ設けられた前記基板の表面に向かって突出する返し部と、を具備する帯状部材における前記二条の被補強リブ間に沿って、互いに対峙する一対の側板部と、前記一対の側板部の一端同士を架橋する架橋部と、を具備する補強金具を嵌め込み固定することによって製管用部材を製造する製管用部材の製造方法であって、前記二条の被補強リブ間に沿って補強金具を嵌め込み固定するにあたり、前記帯状部材における前記二条の被補強リブ間に、前記補強金具を前記一対の側板部の一端側から押し込むことによって、前記補強金具における前記一対の側板部の各側面に、前記各返し部を当接させた状態で、前記補強金具を前記二条の被補強リブ間に仮固定し、次いで、前記基板における前記二条の被補強リブ間を挟んで対向する位置二箇所を、前記基板の裏面側から支持すると共に、前記補強金具を、前記基板の表面側から押圧することによって、前記基板を湾曲させて、前記各軒部それぞれに対し、返し部が当接する各側板部に向かう付勢力を付与し、係る付勢力によって、前記一対の側板部の他端側である各遊端をそれぞれ前記被補強リブの内側壁と前記返し部との間に差し入れ、もって、前記帯状部材における前記二条の被補強リブ間に沿って、前記補強金具を嵌め込み固定することを特徴とする。 The method for producing a pipe-making member according to the present invention includes a long strip-shaped substrate, a plurality of ribs provided along the length direction of the surface of the substrate, and two strips selected from the plurality of ribs. A pair of eaves portions protruding in opposite directions provided on the inner walls or vertices of the reinforcing ribs facing each other, and a barb protruding toward the surface of the substrate respectively provided at one end of each eave portion A reinforcing metal fitting comprising: a pair of side plate portions facing each other along between the two ribs to be reinforced in the belt-shaped member having a portion; and a bridging portion that bridges one ends of the pair of side plate portions. It is a manufacturing method of a pipe-making member that manufactures a pipe-making member by fitting and fixing, and when the reinforcing metal fitting is fitted and fixed between the two reinforcing ribs, between the two reinforcing ribs in the belt-like member In addition, By pushing the serial reinforcing bracket from one end of the pair of side plate portions, on each side of the pair of side plate portions of the reinforcing brackets, said being in contact with the return portion, said reinforcing bracket of the Nijo Temporarily fixing between the ribs to be reinforced, and then supporting two positions on the substrate facing each other across the two ribs to be reinforced from the back side of the substrate, and the reinforcing metal fittings on the surface of the substrate By pressing from the side, the substrate is curved, and an urging force toward each side plate portion with which the return portion abuts is applied to each of the eave portions, and by the urging force, the other of the pair of side plate portions is provided. wherein each free end which is the end side respectively pledged between said return part and the inner wall of the reinforcing ribs, has, along between the reinforcing ribs of the two articles in the belt-shaped member is fixed fitted to the reinforcing bracket And wherein the door.

本発明の製管用部材の製造方法においては、外周面の両端から中心に向かって外径を増加させるテーパ加工が施された凸面ローラを備えた第一押圧部材と、外周面の両端から中心に向かって外径を減少させるテーパ加工が施された凹面ローラを備えた第二押圧部材と、を用い、前記凹面ローラの外周面を前記基板の裏面側に当接させることによって、前記基板における前記二条の被補強リブ間を挟んで対向する二箇所を、前記基板の裏面側から支持しつつ、前記凸ローラの外周面にて、前記補強金具を、前記基板の表面側から押圧することによって、前記基板を湾曲させることが好ましい多様となる。   In the method for producing a pipe-making member of the present invention, the first pressing member including a convex roller having a taper process that increases the outer diameter from the both ends of the outer peripheral surface toward the center, and from the both ends of the outer peripheral surface to the center. And a second pressing member provided with a concave roller that is tapered to reduce the outer diameter toward the outer surface, and by bringing the outer peripheral surface of the concave roller into contact with the back surface side of the substrate, By pressing the reinforcing metal fitting from the front surface side of the substrate on the outer peripheral surface of the convex roller while supporting the two locations facing each other across the two reinforcing ribs, from the back surface side of the substrate, It is preferable that the substrate is curved.

本発明によれば、製管時において捻り応力が負荷されても補強金具が外れ難い製管用部材を製造することができる。   ADVANTAGE OF THE INVENTION According to this invention, even if twisting stress is loaded at the time of pipe manufacture, the member for pipe manufacture which a reinforcement metal fitting cannot remove easily can be manufactured.

図１は、実施形態に係る本発明の製管用部材の製造方法を説明する説明図である。Drawing 1 is an explanatory view explaining the manufacturing method of the member for pipe manufacture of the present invention concerning an embodiment. 図２は、帯状部材を示す断面図である。FIG. 2 is a cross-sectional view showing a belt-like member. 図３は、補強金具を示す断面図である。FIG. 3 is a cross-sectional view showing the reinforcing metal fitting. 図４（ａ）は、帯状部材に対して補強金具を仮固定している状態を説明する説明図であり、図４（ｂ）は、補強金具が仮固定された帯状部材を示す断面図である。FIG. 4A is an explanatory view for explaining a state in which the reinforcing metal fitting is temporarily fixed to the belt-like member, and FIG. 4B is a cross-sectional view showing the belt-like member to which the reinforcing metal fitting is temporarily fixed. is there. 図５（ａ）は、帯状部材に対して補強金具を嵌め込み固定している状態を説明する説明図であり、図５（ｂ）は、補強金具が帯状部材に嵌め込み固定された製管用部材を示す断面図である。FIG. 5A is an explanatory diagram for explaining a state in which the reinforcing metal fitting is fitted and fixed to the belt-like member, and FIG. 5B is a diagram illustrating a pipe-making member in which the reinforcing metal fitting is fitted and fixed to the belt-like member. It is sectional drawing shown. 図６は、第一押圧部材及び第二押圧部材を用いて、帯状部材に対して補強金具を嵌め込み固定している状態を説明する説明図である。FIG. 6 is an explanatory view illustrating a state in which the reinforcing metal fitting is fitted and fixed to the belt-like member using the first pressing member and the second pressing member. 図７（ａ）は、他の帯状部材を示す断面図であり、図７（ｂ）は、この帯状部材に補強金具が嵌め込み固定された製管用部材を示す断面図である。Fig.7 (a) is sectional drawing which shows another strip | belt-shaped member, FIG.7 (b) is sectional drawing which shows the member for pipe manufacture by which the reinforcement metal fitting was engage | inserted and fixed to this strip | belt-shaped member. 図８（ａ）は、他の補強金具を示す断面図であり、図８（ｂ）は、この補強金具が帯状部材に嵌め込み固定された製管用部材を示す断面図である。FIG. 8A is a cross-sectional view showing another reinforcing metal fitting, and FIG. 8B is a cross-sectional view showing a pipe-making member in which the reinforcing metal fitting is fitted and fixed to a belt-like member. 図９（ａ）は、更に他の補強金具を示す断面図であり、図９（ｂ）は、この補強金具が帯状部材に嵌め込み固定された製管用部材を示す断面図である。FIG. 9A is a cross-sectional view showing still another reinforcing metal fitting, and FIG. 9B is a cross-sectional view showing a pipe-making member in which the reinforcing metal fitting is fitted and fixed to a belt-like member. 図１０（ａ）は、別体のコネクタを嵌め込むことによって接合された製管用部材を示す断面図であり、（ｂ）は、製管用部材を接合する状態を示す斜視図である。FIG. 10A is a cross-sectional view showing a pipe-making member joined by fitting a separate connector, and FIG. 10B is a perspective view showing a state in which the pipe-making member is joined. 図１１は、既設管を更生している状態を説明する説明図である。FIG. 11 is an explanatory diagram for explaining a state where an existing pipe is being rehabilitated. 図１２（ａ）は、従来の製管用部材を示す断面図であり、図１２（ｂ）は、製管用部材に捻り応力が負荷された状態を示す断面図である。12A is a cross-sectional view showing a conventional pipe-making member, and FIG. 12B is a cross-sectional view showing a state in which a twisting stress is applied to the pipe-making member. 図１３は、製管時において生じる捻り応力によって補強金具が外れることを防止するために開発された製管用部材を示す断面図である。FIG. 13 is a cross-sectional view showing a pipe-making member developed in order to prevent the reinforcing metal fitting from being detached due to a torsional stress generated during pipe-making.

図１に実施形態に係る本発明の製管用部材１の製造方法を示す。本実施形態に係る製管用部材１の製造方法では、帯状部材２を形成する工程（以下、帯状部材形成工程と称する。）と、補強金具３を形成する工程（以下、補強金具形成工程と称する。）と、帯状部材２に補強金具３を嵌め込み固定する工程（以下、嵌装工程と称する。）と、を実行した。   The manufacturing method of the member 1 for pipe manufacture of this invention which concerns on FIG. 1 at embodiment is shown. In the manufacturing method of the member 1 for pipe making concerning this embodiment, the process (henceforth a band-shaped member formation process) which forms the strip | belt-shaped member 2, and the process (henceforth a reinforcement metal-fitting formation process) which forms the reinforcement metal fitting 3. And a step of fitting and fixing the reinforcing metal fitting 3 to the belt-like member 2 (hereinafter referred to as a fitting step).

前記帯状部材形成工程では、例えば、図２に示すような、長尺帯状の基板２１と、前記基板２１の表面２１１の長さ方向に沿って設けられた複数条のリブ２３と、前記複数条のリブ２３から選択された二条の被補強リブ２３０の頂点にそれぞれ設けられた、互いに対向する方向に突出する一対の軒部２３１と、前記各軒部２３１の一端にそれぞれ設けられた前記基板２１の表面２１１に向かって突出する返し部２３２と、を具備する帯状部材２を形成する。なお、基板２１の一側縁部と他側縁部には雄型嵌合部２４と雌型嵌合部２５が設けられており、製管用部材１を螺旋状に巻き回し、先行する製管用部材１と周回遅れで後続する製管用部材１とを隣接させた状態で、雌型嵌合部２５に雄型嵌合部２４を順次嵌め込めば、製管用部材１が螺旋状に付加形成された管状体（更生管）が製管される仕組みとなっている。 In the band-shaped member forming step, for example, as shown in FIG. 2, a long band-shaped substrate 21, a plurality of ribs 23 provided along the length direction of the surface 211 of the substrate 21, and the plurality of lines A pair of eaves 231 provided at the vertices of the two reinforced ribs 230 selected from the ribs 23 and protruding in opposite directions, and the substrate 21 provided at one end of each eave 231. The belt-like member 2 having the return portion 232 protruding toward the front surface 211 is formed. Note that a male fitting portion 24 and a female fitting portion 25 are provided on one side edge and the other side edge of the substrate 21, and the pipe-making member 1 is spirally wound so that the preceding pipe-making use is made. If the male fitting portion 24 is sequentially fitted in the female fitting portion 25 in a state where the member 1 and the pipe producing member 1 that follows the lap are adjacent to each other, the pipe making member 1 is spirally added. A tubular body (rehabilitation pipe) is manufactured.

本実施形態においては、まず原料設備１０から押出機１１のホッパに向かって熱可塑性樹脂（ポリ塩化ビニル、ポリエチレン、ポリカーボネート及びポリエステル等）を投入し、押出機１１において加熱・混練されて可塑化された素材を、金型１２に向かって連続的に押し出し、冷却装置１３にて冷却することによって、帯状部材２を形成した。形成された帯状部材２は、引き出し機１４によって引き出され、後述する嵌装工程に送られる。   In the present embodiment, a thermoplastic resin (polyvinyl chloride, polyethylene, polycarbonate, polyester, etc.) is first charged from the raw material equipment 10 toward the hopper of the extruder 11, and is heated and kneaded in the extruder 11 to be plasticized. The strip-shaped member 2 was formed by continuously extruding the raw material toward the mold 12 and cooling it with the cooling device 13. The formed belt-like member 2 is pulled out by the drawer 14 and sent to the fitting process described later.

前記補強金具形成工程では、例えば、図３に示すような、互いに対峙する一対の側板部３１と、前記一対の側板部３１の一端同士を架橋する架橋部３２と、を具備する補強金具３を形成する。本実施形態においては、ドラム３００に巻かれた長尺帯状の金属板３０をロール成形機１５に供給し、金属板３０に対して屈曲加工（ロールフォーミング加工）を施すことによって断面視Ｗ字状の補強金具３を形成した。即ち、補強金具３における架橋部３２は、屈曲している。形成された補強金具３は、後述する嵌装工程に送られる。   In the reinforcing bracket forming step, for example, as shown in FIG. 3, the reinforcing bracket 3 including a pair of side plate portions 31 facing each other and a bridging portion 32 that bridges one ends of the pair of side plate portions 31. Form. In the present embodiment, the long strip-shaped metal plate 30 wound around the drum 300 is supplied to the roll forming machine 15, and the metal plate 30 is subjected to bending processing (roll forming processing) so as to have a W-shaped cross-sectional view. The reinforcing metal fitting 3 was formed. That is, the bridging portion 32 in the reinforcing metal fitting 3 is bent. The formed reinforcing metal fitting 3 is sent to the fitting process described later.

前記嵌装工程では、帯状部材２における二条の被補強リブ２３０間に沿って、補強金具３を嵌め込み固定する。本実施形態においては、まず、補強金具３を帯状部材２における二条の被補強リブ２３０間に仮固定する工程（以下、仮固定工程と称する。）を実行し、次いで、補強金具３における一対の側板部３１の各遊端を、それぞれ被補強リブ２３０における内側壁２３３と返し部２３２との間に差し入れ、もって、帯状部材２における二条の被補強リブ２３０間に沿って、補強金具３を嵌め込み固定する工程（以下、本固定工程と称する。）を実行することによって嵌装工程を実行した。   In the fitting step, the reinforcing metal fitting 3 is fitted and fixed along the space between the two reinforcing ribs 230 in the belt-like member 2. In the present embodiment, first, a step of temporarily fixing the reinforcing metal fitting 3 between the two ribs to be reinforced 230 in the belt-like member 2 (hereinafter referred to as a temporary fixing step) is performed, and then a pair of reinforcing metal fittings 3 are paired. Each free end of the side plate portion 31 is inserted between the inner wall 233 and the return portion 232 of the rib to be reinforced 230, and the reinforcing metal fitting 3 is fitted along the two ribs to be reinforced 230 of the belt-like member 2. The fitting step was performed by executing a fixing step (hereinafter referred to as a main fixing step).

前記仮固定工程では、帯状部材２における二条の被補強リブ２３０間に、補強金具３を、一対の側板部３１の一端側から押し込むことによって、補強金具３を二条の被補強リブ２３０間に仮固定する。 In the temporary fixing step, the reinforcing metal fitting 3 is pushed between the two reinforcing ribs 230 in the belt-like member 2 by pushing the reinforcing metal fitting 3 from one end side of the pair of side plate portions 31. Fix it.

本実施形態においては、図４（ａ）に示すように、帯状部材２における二条の被補強リブ２３０間に補強金具３を沿わせた上で、帯状部材２と補強金具３とを、上部ローラ４１と下部ローラ４２とからなる仮固定用ピンチローラ４に通すことによって前記仮固定工程を実行した。この仮固定工程によって、補強金具３は、帯状部材２における二条の被補強リブ２３０間に押し込まれ、補強金具３における前記一対の側板部３１の各側面に、前記各返し部２３２を当接させた状態で仮固定される（図４（ｂ）参照）。 In this embodiment, as shown in FIG. 4A, the reinforcing member 3 is placed between the two ribs 230 to be reinforced in the strip member 2, and then the strip member 2 and the reinforcing member 3 are connected to the upper roller. The temporary fixing step was carried out by passing through a temporarily fixing pinch roller 4 composed of 41 and a lower roller 42. Through this temporary fixing step, the reinforcing metal fitting 3 is pushed between the two ribs to be reinforced 230 in the band-like member 2, and the respective return portions 232 are brought into contact with the respective side surfaces of the pair of side plate portions 31 in the reinforcing metal fitting 3. Temporarily fixed (see FIG. 4B).

前記本固定工程では、基板２１における二条の被補強リブ２３０間を挟んで対向する位置二箇所を、基板２１の裏面２１２側から支持すると共に、前記補強金具３を、前記基板２１の表面２１１側から押圧することによって、前記基板２１を湾曲させて、前記各軒部２３１それぞれに対し、返し部２３２が当接する各側板部３１に向かう付勢力を付与し、係る付勢力によって、前記一対の側板部３１の各遊端をそれぞれ前記被補強リブ２３０の内側壁２３３と前記返し部２３２との間に差し入れ、もって、前記帯状部材２における前記二条の被補強リブ２３０間に沿って、補強金具３を嵌め込み固定する。 In the main fixing step, two positions of the substrate 21 facing each other across the two reinforcing ribs 230 are supported from the back surface 212 side of the substrate 21, and the reinforcing metal fitting 3 is supported on the surface 211 side of the substrate 21. By pressing from the side, the substrate 21 is bent, and each of the eaves 231 is applied with a biasing force toward each side plate 31 where the return portion 232 contacts, and the pair of side plates is caused by the biasing force. Each free end of the portion 31 is inserted between the inner wall 233 of the rib to be reinforced 230 and the return portion 232, so that the reinforcing bracket 3 extends between the two ribs to be reinforced 230 in the strip member 2. Insert and fix.

本実施形態においては、図５（ａ）に示すように、前記基板２１の裏面２１２に当接して回転する一対の裏面支持ローラ５１と、前記補強金具３に当接して回転する補強金具支持ローラ５２との間に、補強金具３が仮固定されてなる帯状部材２を通過させることによって、本固定工程を行った。   In the present embodiment, as shown in FIG. 5A, a pair of back surface support rollers 51 that rotate in contact with the back surface 212 of the substrate 21, and a reinforcing bracket support roller that rotates in contact with the reinforcing bracket 3. The fixing step was performed by passing the band-shaped member 2 in which the reinforcing metal fitting 3 is temporarily fixed between 52 and 52.

前記一対の裏面支持ローラ５１と補強金具支持ローラ５２との間に、補強金具３が仮固定されてなる帯状部材２を通過させると、前記一対の裏面支持ローラ５１は、それぞれ基板２１の裏面２１２側から、基板２１における二条の被補強リブ２３０間を挟んで対向する位置二箇所に当接して回転する。一方、前記補強金具支持ローラ５２は、二条の被補強リブ２３０間に仮固定された補強金具３に当接して回転すると共に、補強金具３を二条の被補強リブ２３０間に挟まれた基板２１の表面２１１に向かって押圧する。その結果、基板２１は、前記一対の裏面支持ローラ５１と補強金具支持ローラ５２との間を通過する間、湾曲させられた状態となる。 When the belt-like member 2 in which the reinforcing metal fitting 3 is temporarily fixed is passed between the pair of back surface supporting rollers 51 and the reinforcing metal metal support roller 52, the pair of back surface supporting rollers 51 are respectively connected to the back surface 212 of the substrate 21. From the side, the substrate 21 rotates in contact with two positions facing each other across the two ribs 230 to be reinforced. On the other hand, the reinforcing metal support roller 52 rotates in contact with the reinforcing metal fitting 3 temporarily fixed between the two reinforcing ribs 230, and the substrate 21 sandwiching the reinforcing metal fitting 3 between the two reinforcing ribs 230. pressed against the surface 211 of the. As a result, the substrate 21 is curved while passing between the pair of back surface support rollers 51 and the reinforcing bracket support roller 52.

なお、本実施形態においては、裏面支持ローラ５１が、係る湾曲した基板２１の裏面２１２に対し垂直方向から当接して円滑に回転するように、回転軸を傾けた状態で配置している。   In the present embodiment, the back support roller 51 is disposed in a state where the rotation axis is inclined so that the back support roller 51 contacts the back surface 212 of the curved substrate 21 from the vertical direction and rotates smoothly.

又、間隔を開けて配置された一対の裏面支持ローラ５１によって、基板２１における二条の被補強リブ２３０間を挟んで対向する位置二箇所を、基板２１の裏面２１２側から支持するにあたり、二箇所の支持位置の間隔が大きくなればなるほど、より小さい力で基板２１を湾曲させることができる。従って、一対の裏面支持ローラ５１の間隔はできるだけ広くすることが好ましい。より具体的には、各裏面支持ローラ５１による基板２１に対する当接位置は、それぞれ基板２１の一側縁部と他側縁部に近接した位置とすることが好ましい。   Further, when supporting two positions on the substrate 21 opposite to each other with the two ribs to be reinforced 230 sandwiched between the pair of back surface support rollers 51 arranged at intervals, two positions are supported. As the distance between the supporting positions increases, the substrate 21 can be bent with a smaller force. Therefore, it is preferable that the distance between the pair of back surface support rollers 51 be as wide as possible. More specifically, it is preferable that the contact positions of the back surface support rollers 51 with respect to the substrate 21 are positions close to the one side edge portion and the other side edge portion of the substrate 21, respectively.

更に、補強金具支持ローラ５２は、本固定工程中、補強金具３のみに当接して回転するものを用いることが好ましい。従って、補強金具支持ローラ５２としては、その外周面の幅が二条の被補強リブ３０間の幅より狭くなされたものを用いたり、外周面の両端から中心に向かって外径を増加させるテーパ加工が施されたもの（凸面ローラ）を用いたりすることが好ましい。   Furthermore, it is preferable to use the reinforcing metal support roller 52 that rotates only in contact with the reinforcing metal 3 during the main fixing step. Accordingly, as the reinforcing metal support roller 52, a roller whose outer peripheral surface is narrower than the width between the two ribs to be reinforced 30 or a taper process that increases the outer diameter from both ends of the outer peripheral surface toward the center. It is preferable to use one (convex roller) that has been subjected to.

基板２１が湾曲させられると、二条の被補強リブ２３０は、互いに近づく方向に傾き、その遊端に存する各軒部２３１それぞれに対し、返し部２３２が当接する各側板部３１に向かう付勢力が付与される。 When the substrate 21 is curved, the two ribs 230 to be reinforced are inclined toward each other, and the biasing force toward each side plate portion 31 with which the return portion 232 abuts against each eave portion 231 existing at the free end thereof. Is granted.

係る付勢力によって、各軒部２３１に設けられた返し部２３２は、それぞれ、補強金具３における側板部３１の遊端を乗り越え、側板部３１の遊端が、前記被補強リブ２３０の内側壁２３３と前記返し部２３２との間に差し入れられる（図５（ｂ）参照）。   Due to the urging force, the return portions 232 provided in each eave portion 231 get over the free ends of the side plate portions 31 in the reinforcing metal fittings 3, respectively, and the free ends of the side plate portions 31 are the inner walls 233 of the ribs 230 to be reinforced. And the return portion 232 (see FIG. 5B).

これによって、前記帯状部材２における前記二条の被補強リブ２３０間に沿って、補強金具３が嵌め込み固定され、製管用部材１が製造される。   Thereby, the reinforcing metal fitting 3 is fitted and fixed along the space between the two ribs 230 to be reinforced in the band-shaped member 2, and the pipe-making member 1 is manufactured.

本発明の製管用部材１の製造方法によって製造された製管用部材１は、巻取ドラム９１に巻き取られる。この製管用部材１は、返し部２３２と被補強リブ３０の内側壁２３３との間に、補強金具３における側板部３１の遊端が差し入れられた状態で、補強金具３が嵌め込み固定されているから、製管時において製管用部材１に捻り応力が負荷されて、二条の被補強リブ２３０が互いに開く方向に傾いても、補強金具３が外れ難くなっている。   The pipe-making member 1 manufactured by the method for manufacturing the pipe-making member 1 of the present invention is wound around the winding drum 91. In the pipe-making member 1, the reinforcing metal fitting 3 is fitted and fixed in a state in which the free end of the side plate portion 31 in the reinforcing metal fitting 3 is inserted between the return portion 232 and the inner wall 233 of the rib 30 to be reinforced. Therefore, even when a twisting stress is applied to the pipe-forming member 1 during pipe making and the two ribs 230 to be reinforced are inclined in the direction of opening each other, the reinforcing metal fitting 3 is difficult to come off.

ところで、本実施形態においては、基板２１を湾曲させる手段として、基板２１の裏面２１２に当接して回転する一対の裏面支持ローラ５１と、前記補強金具３に当接して回転する補強金具支持ローラ５２とを用いているが、本発明において、基板２１を湾曲させる手段としては、係る手段に限定されない。   By the way, in the present embodiment, as means for bending the substrate 21, a pair of back surface support rollers 51 rotating in contact with the back surface 212 of the substrate 21, and a reinforcing bracket support roller 52 rotating in contact with the reinforcing bracket 3. In the present invention, the means for bending the substrate 21 is not limited to such means.

例えば、図６に示すように、外周面の両端から中心に向かって外径を増加させるテーパ加工が施された凸面ローラ６１を備えた第一押圧部材６と、外周面の両端から中心に向かって外径を減少させるテーパ加工が施された凹面ローラ７１を備えた第二押圧部材７と、を用い、前記凹面ローラ７１の外周面を前記基板２１の裏面２１２側に当接させることによって、前記基板２１における前記二条の被補強リブ２３０間を挟んで対向する二箇所を、前記基板２１の裏面２１２側から支持しつつ、前記凸面ローラ６１の外周面にて、前記補強金具３を前記基板２１の表面２１１側から押圧することによって、前記基板２１を湾曲させても良い。   For example, as shown in FIG. 6, the first pressing member 6 including a convex roller 61 having a taper process that increases the outer diameter from both ends of the outer peripheral surface toward the center, and from both ends of the outer peripheral surface toward the center. A second pressing member 7 having a concave roller 71 that is tapered to reduce the outer diameter, and by bringing the outer peripheral surface of the concave roller 71 into contact with the back surface 212 side of the substrate 21, The reinforcing metal fitting 3 is attached to the substrate on the outer peripheral surface of the convex roller 61 while supporting two portions of the substrate 21 facing each other across the two reinforcing ribs 230 from the back surface 212 side of the substrate 21. The substrate 21 may be curved by pressing from the surface 211 side of the substrate 21.

このように、凸面ローラ６１を備えた第一押圧部材６と凹面ローラ７１を備えた第二押圧部材７との間に、補強金具３が仮固定されてなる帯状部材２を通すことによって、基板２１を湾曲させれば、基板２１は、第二押圧部材７における凹面ローラ７１の外周面と面接触した状態で湾曲するため、より安定した状態で、基板２１を第一押圧部材６と第二押圧部材７との間を通過する。これより、基板２１の送り込み速度を増加することができ、もって、製造スピードを向上することができる。又、基板２１における裏面２１２全体が凹面ローラ７１の外周面によって支えられているため、第一押圧部材６の押圧力を効率よく補強金具３に伝達することができる。更に、第一押圧部材６の押圧力を増加することも容易となり、より確実に、補強金具３を帯状部材２に嵌め込むことができる。   Thus, by passing the belt-shaped member 2 in which the reinforcing metal fitting 3 is temporarily fixed between the first pressing member 6 having the convex roller 61 and the second pressing member 7 having the concave roller 71, the substrate If the substrate 21 is curved, the substrate 21 is curved while being in surface contact with the outer peripheral surface of the concave roller 71 of the second pressing member 7, so that the substrate 21 is made more stable with the first pressing member 6 and the second pressing member 6. It passes between the pressing members 7. Thereby, the feeding speed of the substrate 21 can be increased, and the manufacturing speed can be improved. In addition, since the entire back surface 212 of the substrate 21 is supported by the outer peripheral surface of the concave roller 71, the pressing force of the first pressing member 6 can be efficiently transmitted to the reinforcing metal fitting 3. Furthermore, it becomes easy to increase the pressing force of the first pressing member 6, and the reinforcing metal fitting 3 can be fitted into the band-shaped member 2 more reliably.

又、本実施形態においては、帯状部材形成工程において、図２に示す形状の帯状部材２を形成したが、帯状部材２としては、この形状のものに限られない。   Moreover, in this embodiment, although the strip | belt-shaped member 2 of the shape shown in FIG. 2 was formed in the strip | belt-shaped member formation process, the strip | belt-shaped member 2 is not restricted to this shape.

例えば、図７（ａ）に示すように、帯状部材２として、長尺帯状の基板２１と、前記基板２１の表面２１１の長さ方向に沿って設けられた複数条のリブ２３と、前記複数条のリブ２３から選択された二条の被補強リブ２３０の内側壁２３３にそれぞれ設けられた、互いに対向する方向に突出する一対の軒部２３１と、前記各軒部２３１の一端にそれぞれ設けられた前記基板２１の表面２１１に向かって突出する返し部２３２と、を具備するものを形成しても良い。   For example, as shown in FIG. 7A, as the band-shaped member 2, a long band-shaped substrate 21, a plurality of ribs 23 provided along the length direction of the surface 211 of the substrate 21, and the plurality A pair of eaves 231 provided in the inner wall 233 of each of the two reinforced ribs 230 selected from the ribs 23, respectively, projecting in opposite directions, and provided at one end of each eave 231. You may form what comprises the return part 232 which protrudes toward the surface 211 of the said board | substrate 21. As shown in FIG.

即ち、この帯状部材２は、軒部２３１が被補強リブ２３０の内側壁２３３に設けられたものである。この帯状部材２を用いて製造された製管用部材１における補強金具３は、その側板部３１の遊端が、前記被補強リブ２３０の内側壁２３３と、前記軒部２３１の一端に設けられた前記返し部２３２との間に差し入れられた状態で、嵌め込み固定される（図７（ｂ）参照）。   In other words, the belt-like member 2 has the eaves 231 provided on the inner wall 233 of the ribs 230 to be reinforced. In the reinforcing metal fitting 3 in the pipe-making member 1 manufactured using the belt-like member 2, the free end of the side plate portion 31 is provided at the inner wall 233 of the rib to be reinforced 230 and one end of the eave portion 231. It is fitted and fixed in a state of being inserted between the return portions 232 (see FIG. 7B).

この製管用部材１は、補強金具３における側板部３１の遊端が、前記被補強リブ２３０の内側壁２３３と、被補強リブ２３０の頂点より低い位置に設けられた軒部２３１における前記返し部２３２との間に差し入れられているから、製管時において製管用部材１に捻り応力が負荷されて、二条の被補強リブ２３０が互いに開く方向に傾いても、補強金具３がより一層外れ難くなっている。   The pipe-making member 1 is configured so that the free end of the side plate portion 31 in the reinforcing metal fitting 3 has the return portion in the eave portion 231 provided at a position lower than the inner wall 233 of the rib to be reinforced 230 and the apex of the rib to be reinforced 230. Since the torsional stress is applied to the pipe-forming member 1 during pipe making and the two ribs 230 to be reinforced are inclined in the direction of opening each other, the reinforcing metal fitting 3 is more difficult to come off. It has become.

ここで、帯状部材２における二条の被補強リブ２３０間に、補強金具３を架橋部３２側から単に押し込むことのみによって、補強金具３における側板部３１の遊端を、前記被補強リブ２３０の内側壁２３３と、被補強リブ２３０の頂点より低い位置に設けられた軒部２３１における前記返し部２３２との間に差し入れて製管用部材１を製造することは非常に困難であるが、本発明の製管用部材１の製造方法によれば、このような構成の製管用部材１であっても容易に製造することができる。   Here, the free end of the side plate portion 31 in the reinforcing metal fitting 3 is moved into the inner side of the reinforcing rib 230 by simply pushing the reinforcing metal fitting 3 from the bridge portion 32 side between the two reinforcing ribs 230 in the belt-like member 2. Although it is very difficult to manufacture the pipe-forming member 1 by inserting it between the wall 233 and the return portion 232 of the eave portion 231 provided at a position lower than the apex of the rib 230 to be reinforced, According to the manufacturing method of the pipe manufacturing member 1, even the pipe manufacturing member 1 having such a configuration can be easily manufactured.

又、本実施形態においては、補強金具形成工程において、図３に示す形状の補強金具３を形成したが、補強金具３としては、これらの形状のものに限られない。   In the present embodiment, the reinforcing metal fitting 3 having the shape shown in FIG. 3 is formed in the reinforcing metal fitting forming step. However, the reinforcing metal fitting 3 is not limited to those having these shapes.

例えば、図８（ａ）に示すように、補強金具３として、互いに対峙する一対の側板部３１と、前記一対の側板部３１の一端同士を架橋する架橋部３２と、前記一対の側板部３１の各遊端に設けられた互いに対向する方向に突出する舌片３３と、を具備するものを形成しても良い。   For example, as shown in FIG. 8A, as the reinforcing metal fitting 3, a pair of side plate portions 31 that face each other, a bridging portion 32 that bridges one ends of the pair of side plate portions 31, and the pair of side plate portions 31. A tongue piece 33 provided in each free end and protruding in a direction opposite to each other may be formed.

即ち、この補強金具３は、一対の側板部３１の各遊端が屈曲させられることによって、互いに対向する方向に突出する舌片３３が設けられたものである。この補強金具３を用いて製造された製管用部材１は、補強金具３における一対の側板部３１の各遊端に設けられた舌片３３が、前記被補強リブ２３０の内側壁２３３と、前記軒部２３１の一端に設けられた前記返し部２３２との間に差し入れられた状態で、補強金具３が嵌め込み固定される（図８（ｂ）参照）。   That is, the reinforcing metal fitting 3 is provided with tongue pieces 33 that protrude in directions facing each other by bending each free end of the pair of side plate portions 31. In the pipe-making member 1 manufactured using the reinforcing metal fitting 3, the tongue piece 33 provided at each free end of the pair of side plate portions 31 in the reinforcing metal fitting 3 includes the inner wall 233 of the rib to be reinforced 230, The reinforcing metal fitting 3 is fitted and fixed in a state of being inserted between the return portion 232 provided at one end of the eaves portion 231 (see FIG. 8B).

この製管用部材１は、補強金具３における側板部３１の各遊端の嵩を増す舌片３３が、前記被補強リブ２３０の内側壁２３３と、被補強リブ２３０に設けられた軒部２３１における前記返し部２３２との間に差し入れられているから、製管時において製管用部材１に捻り応力が負荷されて、二条の被補強リブ２３０が互いに開く方向に傾いても、補強金具３がより一層外れ難くなっている。   In this pipe-making member 1, tongue pieces 33 that increase the bulk of each free end of the side plate portion 31 in the reinforcing metal fitting 3 are formed on the inner wall 233 of the rib to be reinforced 230 and the eaves 231 provided on the rib to be reinforced 230. Since it is inserted between the return portions 232, the torsional stress is applied to the tube-forming member 1 during pipe-making, and the reinforcing metal fitting 3 is more capable of being tilted in the direction in which the two reinforcing ribs 230 are opened to each other. It is harder to come off.

ここで、帯状部材２における二条の被補強リブ２３０間に、補強金具３を架橋部３２側から単に押し込むことのみによって、補強金具３における側板部３１の各遊端に設けられた嵩高い舌片３３を、前記被補強リブ２３０の内側壁２３３と、被補強リブ２３０に設けられた軒部２３１における前記返し部２３２との間に差し入れて製管用部材１を製造することは非常に困難であるが、本発明の製管用部材１の製造方法によれば、このような構成の製管用部材１であっても容易に製造することができる。   Here, a bulky tongue piece provided at each free end of the side plate portion 31 of the reinforcing bracket 3 by simply pushing the reinforcing bracket 3 from the bridge portion 32 side between the two reinforced ribs 230 of the belt-shaped member 2. It is very difficult to manufacture the pipe-forming member 1 by inserting 33 between the inner wall 233 of the reinforced rib 230 and the return portion 232 of the eaves 231 provided on the reinforced rib 230. However, according to the manufacturing method of the pipe manufacturing member 1 of the present invention, even the pipe manufacturing member 1 having such a configuration can be easily manufactured.

更に、補強金具３として、例えば、図９（ａ）に示すような、互いに対峙する一対の側板部３１と、前記一対の側板部３１の一端同士を架橋する架橋部３２と、前記一対の側板部３１の各遊端を屈曲することによって設けられた戻り部３４と、を具備するものを形成しても良い。   Further, as the reinforcing metal fitting 3, for example, as shown in FIG. 9A, a pair of side plate portions 31 that face each other, a bridging portion 32 that bridges one ends of the pair of side plate portions 31, and the pair of side plates You may form what comprises the return part 34 provided by bending each free end of the part 31. FIG.

即ち、この補強金具３は、一対の側板部３１の各遊端が屈曲されることによって、戻り部３４が設けられたものである。この補強金具３を用いて製造された製管用部材１は、補強金具３における一対の側板部３１の各遊端に存する戻り部３４が、前記被補強リブ２３０の内側壁２３３と、前記軒部２３１の一端に設けられた前記返し部２３２との間に差し入れられた状態で、補強金具３が嵌め込み固定される（図９（ｂ）参照）。   That is, the reinforcing metal fitting 3 is provided with a return portion 34 by bending each free end of the pair of side plate portions 31. The pipe-making member 1 manufactured using the reinforcing metal fitting 3 has a return portion 34 existing at each free end of the pair of side plate portions 31 in the reinforcing metal fitting 3, the inner wall 233 of the rib to be reinforced 230, and the eaves portion. The reinforcing metal fitting 3 is fitted and fixed in a state of being inserted between the return portion 232 provided at one end of 231 (see FIG. 9B).

この製管用部材１は、補強金具３における側板部３１の各遊端の嵩を増す戻り部３４が、前記被補強リブ２３０の内側壁２３３と、被補強リブ２３０に設けられた軒部２３１における前記返し部２３２との間に差し入れられているから、製管時において製管用部材１に捻り応力が負荷されて、二条の被補強リブ２３０が互いに開く方向に傾いても、補強金具３がより一層外れ難くなっている。   In this pipe-making member 1, the return portion 34 that increases the bulk of each free end of the side plate portion 31 in the reinforcing metal fitting 3 is provided in the inner wall 233 of the reinforcing rib 230 and the eave portion 231 provided on the reinforcing rib 230. Since it is inserted between the return portions 232, the torsional stress is applied to the tube-forming member 1 during pipe-making, and the reinforcing metal fitting 3 is more capable of being tilted in the direction in which the two reinforcing ribs 230 are opened to each other. It is harder to come off.

ここで、帯状部材２における二条の被補強リブ２３０間に、補強金具３を架橋部３２側から単に押し込むことのみによって、補強金具３における側板部３１の各遊端に設けられた嵩高い戻り部３４を、前記被補強リブ２３０の内側壁２３３と、被補強リブ２３０に設けられた軒部２３１における前記返し部２３２との間に差し入れて製管用部材１を製造することは非常に困難であるが、本発明の製管用部材１の製造方法によれば、このような構成の製管用部材１であっても容易に製造することができる。   Here, a bulky return portion provided at each free end of the side plate portion 31 in the reinforcing metal fitting 3 by simply pushing the reinforcing metal fitting 3 from the bridge portion 32 side between the two reinforced ribs 230 in the band-like member 2. 34 is inserted between the inner wall 233 of the reinforced rib 230 and the return portion 232 of the eave portion 231 provided on the reinforced rib 230, so that it is very difficult to manufacture the pipe-making member 1. However, according to the manufacturing method of the pipe manufacturing member 1 of the present invention, even the pipe manufacturing member 1 having such a configuration can be easily manufactured.

ところで、前述してきた実施形態においては、製造された製管用部材１につき、基板２１の一側縁部と他側縁部とに、それぞれ設けられた雄型嵌合部２４と雌型嵌合部２５との嵌め込みによる接合手段を有するものが用いられているが、製管用部材１としては、このような嵌め込みによる接合手段を有するものに限られるものではない。製管用部材１は、例えば、接着や熱融着による接合手段によって接合されるものであっても良い。又、図１０（ａ）及び図１０（ｂ）に示すような接合機序によって接合されるものであっても良い。図１０に示す製管用部材１は、熱可塑性樹脂を長尺状に成形したものであって、長尺帯状のコネクタ１４０を用いて側縁部同士が接続されるようになっている。   By the way, in embodiment mentioned above, the male fitting part 24 and the female fitting part which were each provided in the one side edge part and other side edge part of the board | substrate 21 about the manufactured member 1 for pipe making. Although the thing which has a joining means by the fitting with 25 is used, as the member 1 for pipe making, it is not restricted to what has a joining means by such a fitting. The member 1 for pipe making may be joined by, for example, a joining means by adhesion or heat fusion. Moreover, it may join by the joining mechanism as shown to Fig.10 (a) and FIG.10 (b). The tube-forming member 1 shown in FIG. 10 is formed by molding a thermoplastic resin into a long shape, and the side edges are connected to each other using a long strip-shaped connector 140.

すなわち、この製管用部材１の両側縁部にはそれぞれ接合凹部１１２が長手方向に沿って形成されている。また、コネクタ１４０には、製管用部材１の接合凹部１１２に接合することが可能な２つの接合凸部１４１が長手方向に沿って互いに平行に形成されている。   That is, the joint recessed part 112 is formed in the both-sides edge part of this member 1 for pipe making along the longitudinal direction, respectively. In addition, the connector 140 is formed with two joint convex portions 141 that can be joined to the joint concave portion 112 of the pipe-making member 1 in parallel with each other along the longitudinal direction.

そして、このような形態の製管用部材１は、その両側縁部の接合凹部１１２の片方にコネクタ１４０の接合凸部１４１の一方を嵌め込んだ状態で、螺旋状に巻回されて更生管を形成する。その巻回過程において、図１０（ａ）及び図１０（ｂ）に示すように、互いに隣接する２つの製管用部材１のうち、一方の製管用部材１の接合凹部１１２に、他方の製管用部材１の接合凹部１１２に嵌め込んだコネクタ１４０の接合凸部１４１を嵌め込むことにより、これら互いに隣接する製管用部材１を相互に接合することができる。   Then, the pipe-forming member 1 having such a form is wound spirally in a state in which one of the joint convex portions 141 of the connector 140 is fitted into one side of the joint concave portion 112 at both side edge portions thereof. Form. In the winding process, as shown in FIGS. 10 (a) and 10 (b), one of the two pipe-forming members 1 adjacent to each other is joined to the joint recess 112 of one pipe-making member 1, and the other pipe-making use. By fitting the joint convex portion 141 of the connector 140 fitted into the joint concave portion 112 of the member 1, these adjacent pipe-forming members 1 can be joined to each other.

又、前述してきた実施形態においては、製造された製管用部材１につき、補強金具３が隣接する補強リブ２３０間に嵌め込み固定されてなるものを例示してきたが、被補強リブ２３０は必ずしも隣接している場合に限られず、被補強リブ２３０の間にリブ３０が介在されていても良い。   In the embodiment described above, the manufactured pipe-making member 1 has been exemplified in which the reinforcing metal fitting 3 is fitted and fixed between the adjacent reinforcing ribs 230, but the reinforcing rib 230 is not necessarily adjacent. However, the ribs 30 may be interposed between the ribs 230 to be reinforced.

ところで、本実施形態においては、帯状部材形成工程と、補強金具形成工程と、嵌装工程を連続的に行っているが、各工程を独立して行っても良い。又、帯状部材２や補強金具３については、別の工場において製造されたものを搬送したり、他社が製造したものを購入して用いたりしても良い。   By the way, in this embodiment, although the strip | belt-shaped member formation process, the reinforcement metal fitting formation process, and the fitting process are performed continuously, you may perform each process independently. Moreover, about the strip | belt-shaped member 2 and the reinforcement metal fitting 3, you may convey the thing manufactured in another factory, or you may purchase and use the thing manufactured by the other company.

なお、本発明は、その精神または主要な特徴から逸脱することなく、他のいろいろな形で実施することができる。そのため、上述の実施例はあらゆる点で単なる例示にすぎず、限定的に解釈してはならない。本発明の範囲は特許請求の範囲によって示すものであって、明細書本文には、なんら拘束されない。さらに、特許請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。   The present invention can be implemented in various other forms without departing from the spirit or main features thereof. For this reason, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

本発明は、製管時において捻り応力が負荷されても補強金具が外れ難い製管用部材の製造方法として利用することができる。   INDUSTRIAL APPLICABILITY The present invention can be used as a method for manufacturing a pipe-making member in which a reinforcing metal fitting is hardly detached even when a torsional stress is applied during pipe-making.

１ 製管用部材
２ 帯状部材
２１ 基板
２１１ 表面
２１２ 裏面
２３ リブ
２３０ 被補強リブ
２３１ 軒部
２３２ 返し部
２３３ 内側壁
３ 補強金具
３１ 側板部
３２ 架橋部
３３ 舌片
３４ 戻り部
３０ 金属板
４ 仮固定用ピンチローラ
４１ 上部ローラ
４２ 下部ローラ
５１ 裏面支持ローラ
５２ 補強金具支持ローラ
６ 第一押圧部材
６１ 凸面ローラ
７ 第二押圧部材
７１ 凹面ローラ DESCRIPTION OF SYMBOLS 1 Pipe-making member 2 Band-shaped member 21 Board | substrate 211 Front surface 212 Back surface 23 Rib 230 Reinforced rib 231 Eave part 232 Return part 233 Inner side wall 3 Reinforcement metal fitting 31 Side plate part 32 Bridging part 33 Tongue piece 34 Return part 30 Metal plate 4 For temporary fixation Pinch roller 41 Upper roller 42 Lower roller 51 Back support roller 52 Reinforcing bracket support roller 6 First pressing member 61 Convex roller 7 Second pressing member 71 Concave roller

Claims (2)

長尺帯状の基板と、前記基板の表面の長さ方向に沿って設けられた複数条のリブと、前記複数条のリブから選択された二条の被補強リブの対向する内側壁、又は頂点にそれぞれ設けられた、互いに対向する方向に突出する一対の軒部と、前記各軒部の一端にそれぞれ設けられた前記基板の表面に向かって突出する返し部と、を具備する帯状部材における前記二条の被補強リブ間に沿って、互いに対峙する一対の側板部と、前記一対の側板部の一端同士を架橋する架橋部と、を具備する補強金具を嵌め込み固定することによって製管用部材を製造する製管用部材の製造方法であって、
前記二条の被補強リブ間に沿って補強金具を嵌め込み固定するにあたり、
前記帯状部材における前記二条の被補強リブ間に、前記補強金具を前記一対の側板部の一端側から押し込むことによって、前記補強金具における前記一対の側板部の各側面に、前記各返し部を当接させた状態で、前記補強金具を前記二条の被補強リブ間に仮固定し、
次いで、前記基板における前記二条の被補強リブ間を挟んで対向する位置二箇所を、前記基板の裏面側から支持すると共に、前記補強金具を、前記基板の表面側から押圧することによって、前記基板を湾曲させて、前記各軒部それぞれに対し、返し部が当接する各側板部に向かう付勢力を付与し、係る付勢力によって、前記一対の側板部の他端側である各遊端をそれぞれ前記被補強リブの内側壁と前記返し部との間に差し入れ、もって、前記帯状部材における前記二条の被補強リブ間に沿って、前記補強金具を嵌め込み固定することを特徴とする製管用部材の製造方法。 A long strip-shaped substrate, a plurality of ribs provided along the length direction of the surface of the substrate, and two opposing ribs selected from the plurality of ribs, on opposite inner walls, or at the apex The two strips in the belt-shaped member each provided with a pair of eaves protruding in opposite directions and a return portion protruding toward the surface of the substrate provided at one end of each eave. A pipe-making member is manufactured by fitting and fixing a reinforcing fitting including a pair of side plate portions facing each other and a bridging portion that bridges one ends of the pair of side plate portions along the ribs to be reinforced. A method for manufacturing a pipe-making member,
In fitting and fixing the reinforcing metal fittings between the two ribs to be reinforced,
By pushing the reinforcing bracket from one end side of the pair of side plate portions between the two ribs to be reinforced in the strip-shaped member, the return portions are abutted against the side surfaces of the pair of side plate portions of the reinforcing bracket. In the state of contact, temporarily tighten the reinforcing bracket between the two ribs to be reinforced,
Next, the substrate is supported by supporting the two positions facing each other across the two reinforced ribs of the substrate from the back surface side of the substrate, and pressing the reinforcing metal fitting from the front surface side of the substrate. To each of the eaves part, and to apply a biasing force toward each side plate part against which the return part abuts, and with the biasing force, each free end that is the other end side of the pair of side plate parts, respectively. A pipe-forming member characterized by being inserted between an inner wall of the rib to be reinforced and the return portion, so that the reinforcing metal fitting is fitted and fixed along between the two ribs to be reinforced in the band-shaped member. Production method. 請求項１に記載の製管用部材の製造方法において、
外周面の両端から中心に向かって外径を増加させるテーパ加工が施された凸面ローラを備えた第一押圧部材と、
外周面の両端から中心に向かって外径を減少させるテーパ加工が施された凹面ローラを備えた第二押圧部材と、を用い、
前記凹面ローラの外周面を前記基板の裏面側に当接させることによって、前記基板における前記二条の被補強リブ間を挟んで対向する二箇所を、前記基板の裏面側から支持しつつ、前記凸ローラの外周面にて、前記補強金具を、前記基板の表面側から押圧することによって、前記基板を湾曲させる製管用部材の製造方法。 In the manufacturing method of the member for pipe making according to claim 1,
A first pressing member provided with a convex roller subjected to taper processing that increases the outer diameter from both ends of the outer peripheral surface toward the center;
A second pressing member provided with a concave roller subjected to a taper process that reduces the outer diameter from both ends of the outer peripheral surface toward the center, and
By making the outer peripheral surface of the concave roller abut on the back side of the substrate, the two convex portions of the substrate facing each other across the ribs to be reinforced are supported from the back side of the substrate, while the convex A manufacturing method of a member for pipe making which curves the substrate by pressing the reinforcing metal fitting from the surface side of the substrate on the outer peripheral surface of the roller.
JP2011124184A 2011-06-02 2011-06-02 Method for manufacturing pipe-making member Active JP5770535B2 (en)

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