JP2016089949A - Partial peeling device for resin-coated steel pipe - Google Patents

Partial peeling device for resin-coated steel pipe Download PDF

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JP2016089949A
JP2016089949A JP2014224788A JP2014224788A JP2016089949A JP 2016089949 A JP2016089949 A JP 2016089949A JP 2014224788 A JP2014224788 A JP 2014224788A JP 2014224788 A JP2014224788 A JP 2014224788A JP 2016089949 A JP2016089949 A JP 2016089949A
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resin
holding member
steel pipe
coated steel
along
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JP6432112B2 (en
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剛朗 川村
Takeaki Kawamura
剛朗 川村
俊郎 林
Toshiro Hayashi
俊郎 林
健史 浦塚
Takeshi Uratsuka
健史 浦塚
陽一 高木
Yoichi Takagi
陽一 高木
康隆 山下
Yasutaka Yamashita
康隆 山下
山本　幸一
Koichi Yamamoto
幸一 山本
満 森中
Mitsuru Morinaka
満 森中
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OTAKI GAS KK
Shinwa Sangyo Co Ltd
Nippon Gas Co Ltd
Keiyo Gas Co Ltd
Hokkaido Gas Co Ltd
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OTAKI GAS KK
Shinwa Sangyo Co Ltd
Nippon Gas Co Ltd
Keiyo Gas Co Ltd
Hokkaido Gas Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a device for peeling-off a part of a resin-coated layer formed at an outer surface of a resin-coated steel pipe.SOLUTION: A partial peeling device for a resin-coated steel pipe comprises: a cylindrical holding member removably attached along an outer peripheral surface of a resin-coated steel pipe; a cutter blade attached to an end part of the holding member of which cutting depth can be adjusted toward an axial direction of the resin-coated steel pipe so as to cut the resin-coated layer through rotation of the holding member; a plurality of helical-extending male threads continuously formed in a peripheral direction around an axis of the holding member at the extremity end of the inner peripheral surface of the holding member or intermittently protruded therefrom; and rotary operating means for rotating the holding member in annular manner along an outer periphery of the resin-coated steel pipe under a state in which the male threads are engaged with the resin-coated layer.SELECTED DRAWING: Figure 1

Description

本発明は、樹脂被覆鋼管の外表面に形成された樹脂被覆層の一部を剥離することができる装置の改良に関するものである。   The present invention relates to an improvement in an apparatus capable of peeling a part of a resin coating layer formed on the outer surface of a resin-coated steel pipe.

各種配管においては、配管の腐食を防止するために、原管（鋼管）の表面をポリエチレンや硬質塩化ビニルなどの防食用樹脂で被覆した樹脂被覆鋼管が使用されている。
このような樹脂被覆鋼管を他の部材と連結するために、連結個所としてその鋼管の端部や中途位置にある樹脂被覆層の一部を剥離する必要があった。
そこで、例えば、特開２０００−２０２７０１号の合成樹脂被覆金属管の管端被覆除去装置では、合成樹脂を被覆した金属管を軸心の回りに回転させるための回転ローラーと、金属管の管端から所定距離離れた位置において、金属管の外面に被覆された合成樹脂の被覆に円周方向に切り込みを入れる刃物と、刃物を加熱して切り込みを入れた部分の合成樹脂の被覆を溶融させる加熱装置を有する円周方向切り込み装置と、金属管の管端から切り込みを入れた位置までの範囲の合成樹脂の被覆に、金属管の長手方向に沿って一度に切り込みを入れる平形刃物と、切り込みを入れた部分の合成樹脂の被覆を溶融させるための加熱装置と、平形刃物を傾動させて切り込み部を起点として管端部の合成樹脂の被覆を剥離させる傾動機構を有する合成樹脂被覆剥離装置とから構成される合成樹脂被覆金属管の管端被覆除去装置が知られている。
しかし、上記構成では合成樹脂の被覆に円周方向に切り込みを入れる刃物と、金属管の長手方向に沿って一度に切り込みを入れる平形刃物の両方を用いる必要があって構造が複雑となり、刃物の位置決めに手間がかかるなどの問題点があった。
そこで、特開２０１４−４２９７０号の樹脂被覆鋼管の部分剥離装置では、樹脂被覆鋼管の外表面に形成された樹脂被覆層の一部を周方向に沿って剥離する装置において、樹脂被覆鋼管の軸線に沿って着脱可能に固着され、外周面にネジ部が刻設されたネジ部材と、前記ネジ部と螺合するネジ受部を内周面に形成した円筒形状の内筒部を有する作動部材と、前記内筒部の外周面に沿って回転可能に嵌合する内筒部と同心大径の外筒部と、該外筒部と一体に形成されて前記樹脂被覆層を切除する切削刃を備えた切削台部とを有する保持部材と、該保持部材に嵌合した作動部材を保持部材と切り離して回転させる第１操作と、作動部材を保持部材と共に回転させる第２操作とを行う操作手段とを有してなり、前記第１操作により作動部材を保持部材と切り離して回転させて切削台部で樹脂被膜層の一定個所で円周方向に切込部を形成し、第２操作により作動部材と保持部材とを連動して回転させて前記ネジ部とネジ受部の螺合により作動部材と保持部材とを螺進させて前記切削台部で樹脂被膜層を前記切込部位置から鋼管の長手方向に沿って切削する構成が開示されている。
また、特許第５５８４８９２号の樹脂被覆鋼管の部分剥離装置では、
樹脂被覆鋼管の外表面に形成された樹脂被覆層の一部を周方向に沿って剥離する部分剥離装置において、樹脂被覆鋼管の外周面に沿って着脱可能に固定され、外周面に連続するネジ部が形成された筒状のネジ部材と、該ネジ部材のネジ部に整合するネジ受部を内周面に設けて前記ネジ部に螺合させる作動部材と、該作動部材を樹脂被覆鋼管の軸線を中心にして回転させて、前記ネジ部に沿って螺進させる回転操作手段と、前記作動部材の端部に、樹脂被覆鋼管の軸線方向に向かって深度が調整可能に取り付けられ、作動部材の螺進により前記樹脂被覆層を切除する切削刃とを設けた構成が開示されている。
しかし、上記構成では、部品点数が多く、構成が複雑化して取り扱いが煩雑となるという問題があった。 In various types of piping, in order to prevent corrosion of the piping, resin-coated steel pipes in which the surface of the original pipe (steel pipe) is coated with an anticorrosion resin such as polyethylene or hard vinyl chloride are used.
In order to connect such a resin-coated steel pipe to other members, it is necessary to peel off a part of the resin-coated layer at the end of the steel pipe or in the middle as a connection point.
Therefore, for example, in a synthetic resin-coated metal pipe tube end coating removing apparatus disclosed in Japanese Patent Application Laid-Open No. 2000-202701, a rotating roller for rotating a synthetic resin-coated metal pipe around an axis, and a pipe end of the metal pipe At a position a predetermined distance away from the blade that cuts the synthetic resin coating on the outer surface of the metal tube in the circumferential direction, and heating that heats the blade and melts the synthetic resin coating on the cut portion A circumferential cutting device having a device, a flat cutting tool for cutting at a time along the longitudinal direction of the metal tube into the synthetic resin coating in the range from the end of the metal tube to the cut position, and a cutting Synthetic tree having a heating device for melting the synthetic resin coating in the inserted portion and a tilting mechanism for peeling the synthetic resin coating on the pipe end from the notch by tilting the flat blade. Pipe end coating removal apparatus of the synthetic resin-coated metal tube composed of a coating removing apparatus is known.
However, in the above configuration, it is necessary to use both a blade that cuts in the circumferential direction of the synthetic resin coating and a flat blade that cuts in the longitudinal direction of the metal tube at the same time. There were problems such as time-consuming positioning.
Therefore, in the partial peeling apparatus for resin-coated steel pipes disclosed in Japanese Patent Application Laid-Open No. 2014-42970, in the apparatus for peeling a part of the resin coating layer formed on the outer surface of the resin-coated steel pipe along the circumferential direction, the axis of the resin-coated steel pipe A working member having a screw member that is detachably fixed along the outer periphery and has a screw portion engraved on the outer peripheral surface, and a cylindrical inner tube portion that has a screw receiving portion that engages with the screw portion on the inner peripheral surface. An outer cylindrical portion concentrically large in diameter with the inner cylindrical portion that is rotatably fitted along the outer peripheral surface of the inner cylindrical portion, and a cutting blade that is integrally formed with the outer cylindrical portion and excises the resin coating layer An operation for performing a first operation for rotating the operating member fitted to the holding member with the holding member, and a second operation for rotating the operating member together with the holding member. Means for holding the actuating member by the first operation. The cutting portion is formed in the circumferential direction at the fixed portion of the resin coating layer at the cutting base, and the operating member and the holding member are rotated in conjunction with the second operation to rotate the screw portion and the screw. A configuration is disclosed in which the operating member and the holding member are screwed by screwing of the receiving portion, and the resin coating layer is cut along the longitudinal direction of the steel pipe by the cutting base portion from the cut portion position.
Moreover, in the partial peeling apparatus of the resin-coated steel pipe of Japanese Patent No. 5584892,
In a partial peeling device that peels off a part of the resin coating layer formed on the outer surface of the resin-coated steel pipe along the circumferential direction, a screw that is detachably fixed along the outer peripheral surface of the resin-coated steel pipe and is continuous with the outer peripheral surface A cylindrical screw member formed with a portion, a screw receiving portion that is aligned with the screw portion of the screw member, an operating member that is screwed into the screw portion, and the operating member is a resin-coated steel pipe Rotating operation means for rotating about the axis and screwing along the threaded portion, and an end of the actuating member, the depth of which is adjustable in the axial direction of the resin-coated steel pipe, and the actuating member The structure provided with the cutting blade which cuts off the said resin coating layer by this screwing is disclosed.
However, the above configuration has a problem that the number of parts is large, the configuration becomes complicated, and handling becomes complicated.

特開２０００−２０２７０１号公報JP 2000-202701 A 特開２０１４−４２９７０号公報JP 2014-42970 A 特許第５５８４８９２号公報Japanese Patent No. 5584892

この発明は上記事情に鑑みて創案されたもので、その解決しようとする課題は、樹脂被覆鋼管を外嵌して保持する保持部材の内周面に、鋼管の樹脂被覆層に噛合するネジ状の歯部を設け、保持部材を前記鋼管に対して回転させることで、保持部材に設けた切削刃で樹脂被覆層を環状に切除し、剥離することができる樹脂被覆鋼管の部分剥離装置を提供することにある。   The present invention was devised in view of the above circumstances, and the problem to be solved is a screw shape that meshes with the resin coating layer of the steel pipe on the inner peripheral surface of a holding member that externally fits and holds the resin-coated steel pipe. A partial peeling device for a resin-coated steel pipe that can be cut off in a ring shape with a cutting blade provided on the holding member and peeled off by rotating the holding member with respect to the steel pipe There is to do.

上記問題点を解決するために、請求項１の発明では、
樹脂被覆鋼管の外表面に形成された樹脂被覆層の一部を鋼管の軸線を中心にした周方向に沿って剥離する部分剥離装置において、
樹脂被覆鋼管の外周面に沿って着脱可能に固定される筒状の保持部材と、
該保持部材の端部に、樹脂被覆鋼管の軸線方向に向かって深度が調整可能に取り付けられ、保持部材の回転により前記樹脂被覆層を切除する切削刃と、
前記保持部材の内周面の先端側で、保持部材の軸線を中心にした周方向に、連続し、または間欠して突設された螺旋状に延びる複数条の雄ねじ部と
該雄ねじ部を樹脂被覆層に噛合させた状態で前記保持部材を樹脂被覆鋼管の外周に沿って環状に回転させる回転操作手段とからなることを特徴とする。
請求項２の発明では、
前記回転操作手段が、保持部材の外周に沿って環状に回転する回転部材と、該回転部材に設けられて、保持部材の外周に沿って環状に形成されたラチェット状の歯部に沿って回転する逆転防止用の歯止め部とからなっていることを特徴とする。
請求項３の発明では、
前記保持部材が、２分割された断面半円形状の構成部を一端側でヒンジにより連結し、他端側に開閉可能に連結する一対の係止手段を設けてなることを特徴とする。
請求項４の発明では、
前記保持部材が、樹脂被覆鋼管の軸線に沿って複数に分断された複数の構成片からなっており、各構成片はヒンジ部およびまたは固定金具により連結されてなることを特徴とする。 In order to solve the above problem, the invention of claim 1
In the partial peeling device for peeling a part of the resin coating layer formed on the outer surface of the resin-coated steel pipe along the circumferential direction around the axis of the steel pipe,
A cylindrical holding member fixed detachably along the outer peripheral surface of the resin-coated steel pipe;
A cutting blade that is attached to the end of the holding member so that the depth can be adjusted in the axial direction of the resin-coated steel pipe, and cuts the resin coating layer by rotating the holding member;
A plurality of male threaded portions extending in a continuous or intermittently projecting manner in the circumferential direction centering on the axis of the retaining member on the front end side of the inner peripheral surface of the retaining member, and the male threaded portions being resinous It is characterized by comprising rotating operation means for rotating the holding member annularly along the outer periphery of the resin-coated steel pipe while being engaged with the coating layer.
In the invention of claim 2,
The rotation operation means rotates in a ring shape along the outer periphery of the holding member, and rotates along a ratchet-like tooth portion provided on the rotation member and formed in an annular shape along the outer periphery of the holding member. It is characterized by comprising a pawl portion for preventing reverse rotation.
In the invention of claim 3,
The holding member is characterized in that a pair of semicircular cross-section components are connected by a hinge on one end side and a pair of locking means are connected on the other end side so as to be openable and closable.
In the invention of claim 4,
The holding member is composed of a plurality of constituent pieces divided into a plurality along the axis of the resin-coated steel pipe, and each constituent piece is connected by a hinge portion and / or a fixture.

本発明の樹脂被覆鋼管の被覆剥離装置は、樹脂被覆鋼管に保持部材を外嵌することで、内周面に形成された雄ねじ部が樹脂被覆層に食い込み、保持部材を回転させることで、樹脂被覆層に雌ねじを刻設して保持部材の回転をガイドし、切削刃により樹脂被覆層を切除することができるので、剥離作業の範囲が制限されず、且つ複数の部品を組み合わせることなく、簡単な構成によって樹脂被覆鋼管の被覆剥離を確実に遂行することができる。   The coating and peeling apparatus for resin-coated steel pipe according to the present invention is such that the external thread formed on the inner peripheral surface bites into the resin coating layer by externally fitting the holding member to the resin-coated steel pipe, and the holding member is rotated, By engraving a female thread in the coating layer to guide the rotation of the holding member and cutting the resin coating layer with a cutting blade, the range of peeling work is not limited, and it is easy without combining multiple parts With this configuration, it is possible to reliably perform the coating peeling of the resin-coated steel pipe.

実施例１の樹脂被覆鋼管の被覆剥離装置の正面図である。It is a front view of the coating peeling apparatus of the resin coated steel pipe of Example 1. 同背面図である。It is the same rear view. 同平面図である。It is the same top view. 保持部材の構成片を開いた状態の展開図である。It is an expanded view of the state which opened the component piece of the holding member. 使用状態を示す斜視図である。It is a perspective view which shows a use condition. 同正面図である。It is the same front view. 展開した保持部材と操作レバーを示す説明図である。It is explanatory drawing which shows the expand | deployed holding member and operation lever.

保持部材の内周面に雄ねじ部を形成することで、該雄ねじ部によって樹脂被覆層に雌ねじ部を刻設するので、保持部材は樹脂被覆鋼管の外周に沿って正確に回転させることができ、保持部材の先端に設けた切削刃により簡単な構成で樹脂被覆層を切除することを実現した。   By forming a male screw portion on the inner peripheral surface of the holding member, the female screw portion is engraved in the resin coating layer by the male screw portion, so the holding member can be accurately rotated along the outer periphery of the resin-coated steel pipe, A cutting blade provided at the tip of the holding member was used to cut out the resin coating layer with a simple configuration.

以下に、樹脂被覆鋼管の被覆剥離装置１の好適実施例について図面を参照しながら説明する。
この樹脂被覆鋼管の被覆剥離装置１は、樹脂被覆鋼管１０に外嵌する筒状の保持部材３と、該保持部材３を樹脂被覆鋼管１０の外周に沿って回転させる回転操作手段５とからなっている。 Below, the suitable Example of the coating peeling apparatus 1 of a resin coated steel pipe is described, referring drawings.
The resin-coated steel pipe coating / peeling device 1 includes a cylindrical holding member 3 that fits around the resin-coated steel pipe 10 and a rotation operation means 5 that rotates the holding member 3 along the outer periphery of the resin-coated steel pipe 10. ing.

［樹脂被覆鋼管］
樹脂被覆鋼管１０は、図５に例示するように、鋼管１０Ａの表面に樹脂被覆層１１を有するもので、鋼管の外面を、例えば硬質塩化ビニル等で被覆したもの、その他の１種または複数の樹脂を用い、１層または複数層の樹脂層で被覆された鋼管からなっている。 [Resin-coated steel pipe]
As illustrated in FIG. 5, the resin-coated steel pipe 10 has a resin coating layer 11 on the surface of the steel pipe 10 </ b> A, and the outer surface of the steel pipe is coated with, for example, hard vinyl chloride or the like, or one or more other types. It consists of a steel pipe covered with one or more resin layers using resin.

［保持部材］
保持部材３は、樹脂被覆鋼管１０の外周面に沿って隙間なく外嵌して樹脂被覆鋼管１０を固定するための筒体からなっている。
図示例では、保持部材３は円筒形状からなっているが、樹脂被覆鋼管１０を保持する中空部を形成する内周面２（２Ａ、２Ｂ）が樹脂被覆鋼管１０の外周面に沿う断面円形状となっていればよく、保持部材３の全体形状は角筒形状や、その他任意の立体形状であってもよい。 [Holding member]
The holding member 3 is formed of a cylindrical body that is fitted around the outer peripheral surface of the resin-coated steel pipe 10 without a gap to fix the resin-coated steel pipe 10.
In the illustrated example, the holding member 3 has a cylindrical shape, but the inner peripheral surface 2 (2A, 2B) that forms a hollow portion for holding the resin-coated steel tube 10 has a circular cross section along the outer peripheral surface of the resin-coated steel tube 10. The holding member 3 may have a square tube shape or any other three-dimensional shape.

［雄ねじ部］
前記保持部材３の内周面２の先端側で、保持部材３の軸線を中心にした周方向に、環状に連続し、または間欠して螺旋状に延びる１または複数条の雄ねじ部４が突設されている（図１、図２、図４参照）。
そして、保持部材３の内周面２は樹脂被覆鋼管１０の外周面と接する径に設定されており、雄ねじ部４は、樹脂被覆層１１に食い込むが鋼管本体とは衝合しない突出長に設定されていることが好ましい。 [Male thread]
One or a plurality of male threaded portions 4 projecting in a circumferential manner around the axis of the holding member 3 in an annular manner or intermittently extending in a spiral manner on the distal end side of the inner peripheral surface 2 of the holding member 3. (See FIGS. 1, 2, and 4).
The inner peripheral surface 2 of the holding member 3 is set to have a diameter in contact with the outer peripheral surface of the resin-coated steel pipe 10, and the male screw portion 4 is set to a protruding length that bites into the resin-coated layer 11 but does not collide with the steel pipe body. It is preferable that

［構成片］
本実施例では、保持部材３は軸線に沿って略二等分された一対の構成片３Ａ、３Ｂからなっており、該構成片３Ａ、３Ｂは一端側でそれぞれヒンジ片ＨがピンＰ１、Ｐ２によって枢着されている。
前記構成片３Ａ、３Ｂは、内周面が樹脂被覆鋼管１０の外周面に略隙間無く沿うように断面半円弧状に形成されている。 [Component Piece]
In this embodiment, the holding member 3 is composed of a pair of component pieces 3A and 3B which are substantially bisected along the axis. The component pieces 3A and 3B are at one end side and the hinge pieces H are pins P1 and P2, respectively. It is pivotally attached by.
The component pieces 3 </ b> A and 3 </ b> B are formed in a semicircular arc shape in cross section so that the inner peripheral surface thereof is along the outer peripheral surface of the resin-coated steel pipe 10 with almost no gap.

各構成片３Ａ、３Ｂには、構成片３Ａ、３Ｂを固定して筒状に形成するための一対の固定部６として一対の固定用構成部６Ａ、６Ｂが形成されている。
一対の固定用構成部６Ａ、６Ｂは、一方をネジ孔のみとし、他方を前記ネジ孔と整合するネジ孔に螺合した長いネジとする構成でもよいが、本実施例では、前記特許第５５８４８９２号と同様に、一方の固定用構成部６Ａが、一方の構成片３Ｂに形成した保持部材３の軸方向に延びる凹溝にピンＰ３で枢着したチャンネル状の係合片６２と、該係合片６２に螺合して保持部材３の軸方向に延びる頭部６３を有するネジ６４とから構成されている（図３、図７参照）。 Each component piece 3A, 3B is formed with a pair of fixing component portions 6A, 6B as a pair of fixing portions 6 for fixing the component pieces 3A, 3B to form a cylinder.
The pair of fixing components 6A and 6B may have a configuration in which one is a screw hole and the other is a long screw screwed into a screw hole that is aligned with the screw hole. As in the case of No. 1, one fixing component 6A has a channel-like engagement piece 62 pivotally attached by a pin P3 to a groove extending in the axial direction of the holding member 3 formed on one component piece 3B. It comprises a screw 64 having a head 63 extending in the axial direction of the holding member 3 by screwing with the mating piece 62 (see FIGS. 3 and 7).

また、他方の固定用構成部６Ｂを、前記ネジ６４の頭部を係止する段部６６を設けた溝６５としている（図４参照）。
そして、前記構成片３Ａ、３Ｂをヒンジ片Ｈを介して円筒状に整合し、構成片３Ａの前記係合片６２を横倒して外周面から突出しないように、凹溝６１内に没入させ、同時に横倒するネジ６４を対向する構成片３Ｂの溝６５内に没入させる（図３参照）。 The other fixing component 6B is a groove 65 provided with a step portion 66 for locking the head of the screw 64 (see FIG. 4).
Then, the component pieces 3A and 3B are aligned in a cylindrical shape via the hinge piece H, and the engaging piece 62 of the component piece 3A is laid down so as not to protrude from the outer peripheral surface, and at the same time, The screw 64 that falls sideways is immersed in the groove 65 of the opposing component piece 3B (see FIG. 3).

この際にネジ６４の頭部は溝６５の段部６６に掛止められるので、掛け止められた状態でネジ６４を締め付けることで前記構成片３Ａ、３Ｂを相互に緊締して固定し、筒状の保持部材３に組み立てることができる。
この保持部材３は、樹脂被覆鋼管１０の所望位置でその外周に固定される。 At this time, since the head portion of the screw 64 is hooked on the step portion 66 of the groove 65, the component pieces 3A and 3B are fastened and fixed to each other by tightening the screw 64 in the hooked state. The holding member 3 can be assembled.
The holding member 3 is fixed to the outer periphery of the resin-coated steel pipe 10 at a desired position.

本実施例では、一方の構成片３Ａの内周面２Ａの基端側で左右両端側に２個所、他方の構成片３Ｂの内周面２Ｂの基端側で中央に１個所の合計３個所に雄ねじ部４が突設されており、構成片３Ａ、３Ｂを筒状に組み合わせた際の保持部材３の内周面２に等間隔（１２０度間隔）に配置されている。
そして、上記３個所の雄ねじ部４の歯は、螺旋状に連続するねじの歯と整合するようにその線上に形成されている。
図示例では、保持部材３は二等分された場合を例示したが、３つ以上の分割構成片を組み合わせる構造でもよく、また分割構成片は、等分された構成でなくてもよい。 In the present embodiment, a total of three locations, two at the left and right ends on the base end side of the inner peripheral surface 2A of one component piece 3A and one at the center on the base end side of the inner peripheral surface 2B of the other component piece 3B. The male threaded portion 4 is protruded from the inner peripheral surface 2 of the holding member 3 when the constituent pieces 3A and 3B are combined in a cylindrical shape.
The teeth of the three male screw portions 4 are formed on the line so as to be aligned with the spiral teeth of the screw.
In the illustrated example, the holding member 3 is illustrated as being divided into two equal parts, but a structure in which three or more divided constituent pieces are combined may be used, and the divided constituent pieces may not be divided into equal parts.

［切削台部］
前記一方の構成片３Ａの先端には、樹脂被覆鋼管１０の樹脂被覆層１１を切除するバイト等の切削刃Ｃを備えた切削台部７を固定している。
該切削台部７の切削刃Ｃには、樹脂被覆鋼管１０の軸心方向に向かって刃先の深度を上下に調整する深度調整部８を設けている。
深度調整部８は、切削台部７に支持された切削刃Ｃの刃先を上下に昇降して所望位置で固定するものであればよく、切削刃を固定した部材の全体を昇降させる構造でも切削刃だけを昇降させる構造でもよい。
図示例では、切削台部７の上部に形成された調整ネジ９を回すことで切削刃Ｃを固定した部分を垂直に押し下げる構造となっているが、その他、公知の構成を用いることができる。 [Cutting table]
A cutting base portion 7 having a cutting blade C such as a cutting tool for cutting off the resin coating layer 11 of the resin-coated steel pipe 10 is fixed to the tip of the one component piece 3A.
The cutting blade C of the cutting table portion 7 is provided with a depth adjusting portion 8 that adjusts the depth of the cutting edge up and down in the axial direction of the resin-coated steel pipe 10.
The depth adjusting unit 8 only needs to move the blade tip of the cutting blade C supported by the cutting table unit 7 up and down and fix it at a desired position. The structure which raises / lowers only a blade may be sufficient.
In the example shown in the figure, the structure is such that a portion to which the cutting blade C is fixed is pushed down vertically by turning an adjusting screw 9 formed on the upper part of the cutting table 7, but other known configurations can be used.

［回転操作手段］
保持手段３には、該保持部材３の軸線、即ち、保持部材３に固定されて保持手段３の軸線と一致する樹脂被覆鋼管１０の軸線を中心に樹脂被覆鋼管１０の外周面に沿って環状に回転するための回転操作手段５が設けられている。
回転操作手段５は、本実施例の場合、保持部材３の外周面に形成された環状溝３１に沿って摺動し回転する回転部材５Ａと、該回転部材５Ａに連動可能に連結された逆転防止用の歯止め部５Ｂとからなっている。 [Rotation operation means]
The holding means 3 is annular along the outer peripheral surface of the resin-coated steel pipe 10 around the axis of the holding member 3, that is, the axis of the resin-coated steel pipe 10 that is fixed to the holding member 3 and coincides with the axis of the holding means 3. Rotation operation means 5 is provided for rotation.
In the case of the present embodiment, the rotation operation means 5 includes a rotation member 5A that slides and rotates along an annular groove 31 formed on the outer peripheral surface of the holding member 3, and a reverse rotation coupled to the rotation member 5A so as to be interlocked. It consists of a pawl portion 5B for prevention.

保持部材３には、厚み方向の中途位置に、該保持部材３の軸線を中心に外周に沿って凹設された１つの連続する環状溝３１が形成されている。
該環状溝３１には、環状溝３１に沿って摺動し、保持部材３のまわりを一周する回転部材５Ａが設けられている。 The holding member 3 is formed with one continuous annular groove 31 that is recessed along the outer periphery about the axis of the holding member 3 in the middle of the thickness direction.
The annular groove 31 is provided with a rotating member 5 </ b> A that slides along the annular groove 31 and makes a round around the holding member 3.

保持部材３の外周で、前記環状溝３１と平行に並んでラチェット状の歯部３２が環状に形成されている。
一方、前記回転部材５Ａには、歯止め部５Ｂが連結されている。
該歯止め部５Ｂは、回転部材５Ａの正回転によって歯止め部５Ｂの先端の爪部がラチェット状の歯部３２の直角に立ち上がる面に規制されて保持部材３と一体的になり、逆回転によって保持部材３とは別に回転部材５Ａにのみ連動し、歯止め部５Ｂの爪部が歯部３２の徐々に***する傾斜面に倣って移動して逆方向に空転するラチェット構造からなっている。 On the outer periphery of the holding member 3, a ratchet-like tooth portion 32 is formed in an annular shape in parallel with the annular groove 31.
On the other hand, a pawl portion 5B is connected to the rotating member 5A.
The pawl portion 5B is integrated with the holding member 3 by the forward rotation of the rotating member 5A so that the claw portion at the tip of the pawl portion 5B is restricted to the surface rising at a right angle of the ratchet-like tooth portion 32, and is held by reverse rotation Apart from the member 3, it has a ratchet structure that interlocks only with the rotating member 5 </ b> A, and the pawl portion of the pawl portion 5 </ b> B moves following the gradually rising inclined surface of the tooth portion 32 and idles in the reverse direction.

即ち、歯止め部５Ｂは、先端の爪部が下向きに付勢されて昇降自在に取り付けられており、回転部材５Ａの回転と連動し、正回転時には、歯止め部５Ｂの爪部が前記歯部３２の略直角に立ち上がる面３２Ａに衝合して規制され、回転部材５Ａを保持部材３と一体的に回転させる。
そして、回転部材５Ａが逆回転しようとする場合には、歯部３２の傾斜する面３２Ｂに沿ってガイドされて上昇して歯部３２を乗り越えて、保持部材３とは連動せずに逆方向に回転する（図６参照）。 That is, the pawl portion 5B is attached so that the tip claw portion is urged downward and can be moved up and down. The pawl portion 5B is interlocked with the rotation of the rotating member 5A. The rotating member 5 </ b> A is rotated integrally with the holding member 3 by being abutted against the surface 32 </ b> A rising substantially at right angles.
When the rotating member 5A is going to rotate in the reverse direction, the rotating member 5A is guided along the inclined surface 32B of the tooth portion 32 and rises over the tooth portion 32, and does not interlock with the holding member 3 in the reverse direction. (See FIG. 6).

本実施例では、上記環状溝３１とラチェット状の歯部３２とは、前記構成片３Ａ、３Ｂにそれぞれ分割した状態で形成されており、構成片３Ａ、３Ｂの組立て時に、それぞれ一連に整合して連続する環状溝３１や環状に並んだラチェット状の歯部３２となるように配置されている。
また、前記固定部６とヒンジ片Ｈは、前記環状溝３１と歯部３２の間に介設しないことが望ましく、本実施例では、環状溝３１と歯部３２が隣接し、該歯部の外側に配置されている。 In this embodiment, the annular groove 31 and the ratchet-shaped tooth portion 32 are formed in a state of being divided into the component pieces 3A and 3B, respectively, and are aligned in series when the component pieces 3A and 3B are assembled. Are arranged so as to form a continuous annular groove 31 and a ratchet-like tooth portion 32 arranged in an annular shape.
Further, it is desirable that the fixing portion 6 and the hinge piece H are not interposed between the annular groove 31 and the tooth portion 32. In this embodiment, the annular groove 31 and the tooth portion 32 are adjacent to each other, and the tooth portion Arranged outside.

本実施例では、回転部材５Ａは、下端に環状溝３１を摺動する断面円弧状の摺動面が形成されており、上部には、長尺の操作レバー５０を螺合等で連結するための連結部５１が形成されている。
操作レバー５０を用いることで、回転部材５Ａの回転が容易となる。 In the present embodiment, the rotary member 5A has a circular arc-shaped sliding surface that slides on the annular groove 31 at the lower end, and a long operating lever 50 is connected to the upper portion by screwing or the like. The connecting portion 51 is formed.
By using the operation lever 50, the rotation member 5A can be easily rotated.

［使用法］
上記構成からなるので、まず樹脂被覆鋼管１０を図示しない固定手段で固定する。
次いで、固定された樹脂被覆鋼管１０の被剥離個所の先端に保持部材３の基端が揃うように構成片３Ａ、３Ｂで樹脂被覆鋼管１０を外嵌し固定部６で固定する。
これにより、保持部材３の中空部３Ａで樹脂被覆鋼管１０を固定し、保持部材３の基端に形成された雄ねじ部４が、樹脂被覆鋼管１０の被剥離部の先端の樹脂被覆層１１に食い込ませる。 [how to use]
Since it consists of the said structure, the resin-coated steel pipe 10 is first fixed with the fixing means which is not shown in figure.
Next, the resin-coated steel pipe 10 is externally fitted with the constituent pieces 3 </ b> A and 3 </ b> B so that the base end of the holding member 3 is aligned with the distal end of the part to be peeled of the fixed resin-coated steel pipe 10 and fixed by the fixing portion 6.
Thereby, the resin-coated steel pipe 10 is fixed by the hollow portion 3 </ b> A of the holding member 3, and the male screw portion 4 formed at the base end of the holding member 3 is attached to the resin-coated layer 11 at the tip of the peeled portion of the resin-coated steel pipe 10. Encroach on.

次いで、回転部材５Ａを操作レバー５０で正回転方向に動かすと、歯止め部５Ｂが保持部材３の外周に形成されたラチェット状の歯部３２の垂直面側に掛け止められて、保持部材３を樹脂被覆鋼管１０の軸線を中心に回転させることができる。
この保持部材３の回転により、前記雄ねじ部４が樹脂被覆層１１にねじに沿った螺旋状に進行するので、保持部材３を螺進させることができる。 Next, when the rotating member 5A is moved in the forward rotation direction by the operation lever 50, the pawl portion 5B is hooked on the vertical surface side of the ratchet-like tooth portion 32 formed on the outer periphery of the holding member 3, and the holding member 3 is moved. The resin-coated steel pipe 10 can be rotated around the axis.
By the rotation of the holding member 3, the male screw portion 4 advances to the resin coating layer 11 in a spiral shape along the screw, so that the holding member 3 can be screwed.

上記保持部材３の螺進によって、保持部材３の基端に設けた切削刃Ｃで樹脂被覆層１１を切削して鋼管から剥離する。
また、前記操作レバー５０を逆回転させると、歯止め部５Ｂが保持部材３の外周に形成されたラチェット状の歯部３２の徐々に***する傾斜面に倣って空転するので、保持部材３を逆戻り方向には回転させない（図６参照）。 When the holding member 3 is screwed, the resin coating layer 11 is cut with a cutting blade C provided at the base end of the holding member 3 and peeled off from the steel pipe.
Further, when the operation lever 50 is rotated in the reverse direction, the pawl portion 5B idles following the gradually rising inclined surface of the ratchet-shaped tooth portion 32 formed on the outer periphery of the holding member 3, so that the holding member 3 is returned. Do not rotate in the direction (see FIG. 6).

上記実施例で、雄ねじ部４は、螺旋状の雄ねじを、部分的に３個所だけ残して平行する複数のねじ部としたが、前述のように１連の雄ねじでもよいし、複数に分かれて離間するねじ部としてもよい。
また、保持部材３の回転操作手段５は、本実施例ではラチェット構造を用いたが、保持部材３を回転するものであればよく、例えば複数の操作レバーを連結したり、その他公知の回転手段を用いることができる。
その他、この発明は、その要旨に変更しない範囲で種々設計変更しうること勿論である。 In the above-described embodiment, the male screw portion 4 is a plurality of screw portions that are parallel to each other, leaving only three portions of the helical male screw. However, as described above, a single male screw portion may be used or divided into a plurality of portions. It is good also as a thread part to separate.
Further, the rotation operation means 5 of the holding member 3 uses a ratchet structure in this embodiment. However, any rotation means 5 that rotates the holding member 3 may be used. For example, a plurality of operation levers may be connected, or other known rotation means. Can be used.
In addition, it goes without saying that various design changes can be made to the present invention without departing from the scope of the invention.

１ 樹脂被覆鋼管の部分剥離装置
２ 内周面
３ 保持部材
３Ａ、３Ｂ 保持部材構成片
４ 雄ねじ部
５ 回転操作手段
５Ａ 回転部材
５Ｂ 歯止め部
６ 固定部
６Ａ、６Ｂ 固定用構成部
７ 切削台部
８ 深度調整部
９ 調整ネジ
１０ 樹脂被覆鋼管
１１ 樹脂被覆層
５０ 操作レバー
Ｃ 切削刃
Ｈ ヒンジ部 DESCRIPTION OF SYMBOLS 1 Partial peeling apparatus of resin-coated steel pipe 2 Inner peripheral surface 3 Holding member 3A, 3B Holding member component piece 4 Male screw part 5 Rotating operation means 5A Rotating member 5B Pawl part 6 Fixing part 6A, 6B Fixing component part 7 Cutting base part 8 Depth adjustment part 9 Adjustment screw 10 Resin-coated steel pipe 11 Resin-coated layer 50 Operation lever C Cutting blade H Hinge part

Claims (4)

樹脂被覆鋼管の外表面に形成された樹脂被覆層の一部を鋼管の軸線を中心にした周方向に沿って剥離する部分剥離装置において、
樹脂被覆鋼管の外周面に沿って着脱可能に固定される筒状の保持部材と、
該保持部材の端部に、樹脂被覆鋼管の軸線方向に向かって深度が調整可能に取り付けられ、保持部材の回転により前記樹脂被覆層を切除する切削刃と、
前記保持部材の内周面の先端側で、保持部材の軸線を中心にした周方向に、連続し、または間欠して突設された螺旋状に延びる複数条の雄ねじ部と、
該雄ねじ部を樹脂被覆層に噛合させた状態で前記保持部材を樹脂被覆鋼管の外周に沿って環状に回転させる回転操作手段とからなることを特徴とする樹脂被覆鋼管の部分剥離装置。 In the partial peeling device for peeling a part of the resin coating layer formed on the outer surface of the resin-coated steel pipe along the circumferential direction around the axis of the steel pipe,
A cylindrical holding member fixed detachably along the outer peripheral surface of the resin-coated steel pipe;
A cutting blade that is attached to the end of the holding member so that the depth can be adjusted in the axial direction of the resin-coated steel pipe, and cuts the resin coating layer by rotating the holding member;
A plurality of male threaded portions extending in a spiral shape continuously or intermittently projecting in the circumferential direction around the axis of the holding member at the front end side of the inner peripheral surface of the holding member;
A partial peeling apparatus for a resin-coated steel pipe, comprising: a rotation operating means for rotating the holding member in a ring shape along the outer periphery of the resin-coated steel pipe in a state where the male screw portion is engaged with the resin-coated layer. 回転操作手段が、保持部材の外周に沿って環状に回転する回転部材と、該回転部材に設けられて、保持部材の外周に沿って環状に形成されたラチェット状の歯部に沿って回転する逆転防止用の歯止め部とからなっていることを特徴とする請求項１に記載の樹脂被覆鋼管の部分剥離装置。   The rotation operation means rotates in a ring shape along the outer periphery of the holding member, and rotates along a ratchet-like tooth portion provided in the rotation member and formed in an annular shape along the outer periphery of the holding member. The partial peeling apparatus for a resin-coated steel pipe according to claim 1, comprising a pawl portion for preventing reverse rotation. 保持部材が、２分割された断面半円形状の構成部を一端側でヒンジにより連結し、他端側に開閉可能に連結する一対の係止手段を設けてなることを特徴とする請求項１または２に記載の樹脂被覆鋼管の部分剥離装置。   2. The holding member is provided with a pair of locking means for connecting the two-divided semicircular component parts by hinges on one end side and connecting the other end side so as to be openable and closable. Or the partial peeling apparatus of the resin-coated steel pipe of 2. 保持部材が、樹脂被覆鋼管の軸線に沿って複数に分断された複数の構成片からなっており、各構成片はヒンジ部およびまたは固定金具により連結されてなることを特徴とする請求項１から３のいずれかに記載の樹脂被覆鋼管の部分剥離装置。   The holding member is composed of a plurality of constituent pieces divided into a plurality along the axis of the resin-coated steel pipe, and each constituent piece is connected by a hinge part and / or a fixture. The partial peeling apparatus of the resin-coated steel pipe according to any one of 3 above.
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Publication number Priority date Publication date Assignee Title
JP2019098441A (en) * 2017-11-30 2019-06-24 大阪瓦斯株式会社 Tool for surface peeling of resin coated pipe and peeling method
JP2020199588A (en) * 2019-06-10 2020-12-17 大阪瓦斯株式会社 Tool for peeling surface of resin-coated pipe and surface peeling method

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JP2019098441A (en) * 2017-11-30 2019-06-24 大阪瓦斯株式会社 Tool for surface peeling of resin coated pipe and peeling method
JP7016248B2 (en) 2017-11-30 2022-02-04 大阪瓦斯株式会社 Tool for peeling the surface of resin cladding tube and peeling method
JP2020199588A (en) * 2019-06-10 2020-12-17 大阪瓦斯株式会社 Tool for peeling surface of resin-coated pipe and surface peeling method

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