JP2017013148A - Pipe cutting device - Google Patents
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- JP2017013148A JP2017013148A JP2015129601A JP2015129601A JP2017013148A JP 2017013148 A JP2017013148 A JP 2017013148A JP 2015129601 A JP2015129601 A JP 2015129601A JP 2015129601 A JP2015129601 A JP 2015129601A JP 2017013148 A JP2017013148 A JP 2017013148A
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Abstract
Description
本発明はパイプ切断装置に関し、より詳細には、パイプを内側から外側に向かって切断する装置に関するものである。 The present invention relates to a pipe cutting apparatus, and more particularly to an apparatus for cutting a pipe from the inside to the outside.
本出願人は、従来よりも簡単な構造で登坂性に優れ、不整地の山林等にも容易に設置できる台車及び軌道運搬装置を本願出願前に提案した（特許文献１）。この提案した軌道運搬装置を山林等に設置する際には、支柱を所定間隔で地面に立設し、これらの支柱間に、所定長さのユニットである枠体を連接して軌道とする。枠体は、単軌条と横パイプとが上下方向に所定間隔を隔てて平行に位置し、単軌条と横パイプとの間に複数の格子が「ハ」字状に繰り返し連続して設けられている。 The present applicant has proposed, prior to the filing of the present application, a cart and a track transportation device that have a simpler structure than that of the prior art and that are excellent in climbing performance and can be easily installed in rough forests or the like (Patent Document 1). When installing the proposed track transport device in a forest or the like, support posts are erected on the ground at predetermined intervals, and a frame, which is a unit of a predetermined length, is connected between the support posts to form a track. In the frame, a single rail and a horizontal pipe are positioned parallel to each other with a predetermined interval in the vertical direction, and a plurality of grids are repeatedly provided in a “C” shape between the single rail and the horizontal pipe. Yes.
このような枠体を支柱間に滑らかに連接していくには、支柱や単軌条、横パイプなどを切断し調整する作業が不可避に発生する。ここで、パイプを外側から内側に向かって切断する方法では、切断器具の取付や回転させるための空間が必要となり、所望の位置でパイプを切断することが困難な場合がある。このため、パイプを内側から外側に向かって切断する方法が望ましい。 In order to smoothly connect such a frame body between the support columns, an operation of cutting and adjusting the support columns, single rails, horizontal pipes, etc. is unavoidable. Here, in the method of cutting the pipe from the outside to the inside, a space for attaching or rotating the cutting tool is required, and it may be difficult to cut the pipe at a desired position. For this reason, a method of cutting the pipe from the inside to the outside is desirable.
パイプを内側から外側に向かって切断する装置としては、例えば特許文献２に、中空ロッドの下端に付設したガイドに、水平方向へ移動可能にホルダーを介在して複数のカッターを設け、中空ロッドの内部を挿通するカムロッドの下端に末広状のカムを取付け、カムを上方に移動させることによってカッターをパイプの内周面に押し当てパイプを切断する装置が提案されている。 As an apparatus for cutting the pipe from the inside to the outside, for example, in Patent Document 2, a guide attached to the lower end of the hollow rod is provided with a plurality of cutters through a holder so as to be movable in the horizontal direction. A device has been proposed in which a divergent cam is attached to the lower end of a cam rod that passes through the inside, and the cam is moved upward to press the cutter against the inner peripheral surface of the pipe and cut the pipe.
また引用文献３でも、回転軸部に形成された突起部を軸方向に移動させることによって、切断刃保持部を径方向に移動させ切断刃をパイプの内周面に押し当てパイプを切断する装置が提案されている。 Also in Cited Document 3, by moving the protrusion formed on the rotating shaft portion in the axial direction, the cutting blade holding portion is moved in the radial direction so that the cutting blade is pressed against the inner peripheral surface of the pipe and the pipe is cut. Has been proposed.
しかしながら、前記提案のパイプ切断装置ではいずれも、カッターをパイプの内周面に押し当てるためにカッターの回転駆動とは別にカムを移動させる作業が必要であり、起伏の激しい山林などでの作業では、より簡便な作業でパイプを切断できるようにすることが望まれている。 However, in all of the proposed pipe cutting devices, it is necessary to move the cam separately from the rotational drive of the cutter in order to press the cutter against the inner peripheral surface of the pipe. Therefore, it is desired that the pipe can be cut by a simpler operation.
そこで本発明の目的は、より簡便な作業でパイプを切断できる装置を提供することにある。 Accordingly, an object of the present invention is to provide an apparatus capable of cutting a pipe with a simpler operation.
前記目的を達成する本発明に係るパイプ切断装置は、パイプを内側から外側に向かって切断する装置であって、パイプの端部から挿入され回転駆動する回転軸部と、前記回転軸部によって回転され、前記回転軸部の軸線に対して偏心した第１軸線周りに回転可能にカッターホイールを軸支するカッター支持部材と、前記回転軸部によって回転され、前記回転軸部の軸線に対して偏心した第２軸線周りに回転可能にローラを軸支するローラ支持部材と、前記回転軸部の回転によって第１軸線と第２軸線との間隔を広げ、前記カッターホイール及び前記ローラをパイプの内周面に押しつける拡開手段とを備え、前記カッターホイールがパイプの内周面に直角に押しつけられた状態で遊星運動することによりパイプを内側から外側に向かって切断することを特徴とする。 The pipe cutting device according to the present invention that achieves the above object is a device that cuts a pipe from the inside to the outside, and is a rotation shaft portion that is inserted from an end portion of the pipe and is driven to rotate, and is rotated by the rotation shaft portion. A cutter support member that pivotally supports a cutter wheel so as to be rotatable around a first axis that is eccentric with respect to the axis of the rotary shaft, and is rotated by the rotary shaft and is eccentric with respect to the axis of the rotary shaft A roller support member that rotatably supports the roller around the second axis, and the interval between the first axis and the second axis is increased by the rotation of the rotary shaft, and the cutter wheel and the roller are connected to the inner circumference of the pipe. Expansion means that presses against the surface, and the cutter wheel cuts the pipe from the inside to the outside by performing a planetary motion with the cutter wheel being pressed at right angles to the inner peripheral surface of the pipe. It is characterized in.
前記構成において、前記回転軸部の少なくとも一部に雄ネジ部が形成され、前記拡開手段が、前記雄ネジ部に螺合する雌ネジ穴を有する移動部材と、この移動部材に接続すると共に、前記カッター支持部材及び前記ローラ支持部材に接触し第１軸線と第２軸線との間隔を広げる板状カムとを有する構成とするのが好ましい。 In the above configuration, a male screw part is formed on at least a part of the rotating shaft part, and the expanding means is connected to the moving member, and a moving member having a female screw hole screwed into the male screw part. It is preferable to have a plate-like cam that contacts the cutter support member and the roller support member and widens the distance between the first axis and the second axis.
また前記構成において、前記移動部材の少なくとも一部を所定の隙間を隔てて覆い、パイプの端部から外に一部が露出する筒状把持部をさらに設け、前記筒状把持部を把持することによって前記筒状把持部を前記移動部材に接触させて、前記移動部材の前記回転軸部との供回りを停止させ、前記移動部材を前記回転軸部の軸線方向に移動させる構成としてもよい。 Further, in the above-described configuration, a cylindrical gripping portion that covers at least a part of the moving member with a predetermined gap therebetween, further includes a cylindrical gripping part that is exposed to the outside from an end portion of the pipe, and grips the cylindrical gripping part. The cylindrical gripping portion may be brought into contact with the moving member to stop the rotation of the moving member with the rotating shaft portion, and the moving member may be moved in the axial direction of the rotating shaft portion.
また前記構成において、前記カッター支持部材が一対のカッター支持板を有し、この一対のカッター支持板のそれぞれ対応する位置に前記ローラの回転軸と係合する第１凹部が形成されている構成としてもよい。 Moreover, in the said structure, the said cutter support member has a pair of cutter support plate, and the 1st recessed part engaged with the rotating shaft of the said roller is formed in the position corresponding to this pair of cutter support plate, respectively. Also good.
そしてまた前記構成において、前記ローラ支持部材が一対のローラ支持板を有し、この一対のローラ支持板の一方に前記回転軸部と係合する第２凹部が形成され、もう一方に前記カッターホイールの回転軸部と係合する第３凹部が形成されている構成としてもよい。 And in the said structure, the said roller support member has a pair of roller support plate, the 2nd recessed part engaged with the said rotating shaft part is formed in one side of this pair of roller support plate, and the said cutter wheel is in the other side. It is good also as a structure in which the 3rd recessed part engaged with the rotating shaft part of this is formed.
前記構成において、前記回転軸部としてボルトを用いてもよい。 The said structure WHEREIN: You may use a volt | bolt as the said rotating shaft part.
本発明のパイプ切断装置によれば、回転軸部の回転によってカッターホイールの公転とパイプ内周面への押しつけがなされるので、従来のようなカムを移動させるための作業が不要となる。このため、従来の装置に比べてより簡便な作業でパイプを切断でき、作業現場での利便性が向上する。 According to the pipe cutting device of the present invention, since the revolution of the cutter wheel causes the revolution of the cutter wheel and the pressing to the inner peripheral surface of the pipe, the conventional operation for moving the cam becomes unnecessary. For this reason, a pipe can be cut | disconnected by a simpler operation | work compared with the conventional apparatus, and the convenience in a work site improves.
以下、本発明に係るパイプ切断装置について図に基づきさらに詳しく説明するが本発明はこれらの実施形態に何ら限定されるものではない。 Hereinafter, although the pipe cutting device concerning the present invention is explained still in detail based on a figure, the present invention is not limited to these embodiments at all.
図１は本発明に係るパイプ切断装置の一例を示す概説図であり、図２はそのパイプ切断装置の概略側面図である。また、図３は一対のカッター支持板の概説図であり、図４は一対のローラ支持板の概説図である。なお、図１では、内部構造を理解しやすいように板状カムを移動部材から取り外した状態とするとともにパイプと筒状把持部を断面としている。また、上下、左右、外方・内方のそれぞれの方向は各図に示した方向とする。 FIG. 1 is a schematic view showing an example of a pipe cutting device according to the present invention, and FIG. 2 is a schematic side view of the pipe cutting device. 3 is a schematic diagram of a pair of cutter support plates, and FIG. 4 is a schematic diagram of a pair of roller support plates. In FIG. 1, the plate-like cam is removed from the moving member so that the internal structure can be easily understood, and the pipe and the cylindrical gripping portion are shown in cross section. In addition, the respective directions of up and down, left and right, outward and inward are the directions shown in the drawings.
図１に示すパイプ切断装置Ｄは、回転軸部としての長尺六角ボルト１（以下、単に「ボルト１」と記すことがある）と、ボルト１の軸線Ｌ０に対して偏心した第１軸線Ｌ１周りに回転可能にカッターホイール７を軸支する一対のカッター支持板２ａ，２ｂと、ボルト１の軸線Ｌ０に対して偏心した第２軸線Ｌ２周りに回転可能に４つのローラ８を軸支する一対のローラ支持板３ａ，３ｂと、ボルト１に螺合する雌ネジ穴４１１を有する移動部材（拡開手段）４と、この移動部材４に接続する板状カム（拡開手段）５と、移動部材４の外周を所定の隙間を隔てて覆い、パイプ９の端部から外に一部が露出した筒状把持部６とを有する。 A pipe cutting device D shown in FIG. 1 includes a long hexagonal bolt 1 (hereinafter simply referred to as “bolt 1”) as a rotating shaft portion, and a first axis L1 that is eccentric with respect to the axis L0 of the bolt 1. A pair of cutter support plates 2a and 2b that pivotally support the cutter wheel 7 so as to be rotatable around, and a pair that rotatably support four rollers 8 around a second axis L2 that is eccentric with respect to the axis L0 of the bolt 1. Roller support plates 3a and 3b, a moving member (expanding means) 4 having a female screw hole 411 screwed into the bolt 1, a plate-like cam (expanding means) 5 connected to the moving member 4, and movement The outer periphery of the member 4 is covered with a predetermined gap, and has a cylindrical gripping part 6 that is partially exposed from the end of the pipe 9.
図３に示すように、カッター支持板２ａは略四角形状であって、ボルト１の端部が固定される固定用穴２１とカッターホイール７を回転可能に支持する軸部材７１（図１に図示）が固定される固定用穴２２とを有し、固定用穴２２は固定用穴２１に対して偏心した位置に形成されている。また、カッター支持板２ａの下辺には、ローラ８の回転軸８１（図１に図示）と係合する２つの第１凹部２３ａ，２４ａが形成されている。また、カッター支持板２ａの左右両辺の対称位置には、板状カム５と接触する段差部２５ａ，２６ａが形成されている。 As shown in FIG. 3, the cutter support plate 2 a has a substantially square shape, and a shaft member 71 (shown in FIG. 1) that rotatably supports the fixing hole 21 to which the end of the bolt 1 is fixed and the cutter wheel 7. ) Is fixed, and the fixing hole 22 is formed at a position eccentric with respect to the fixing hole 21. In addition, two first recesses 23a and 24a that engage with a rotation shaft 81 (shown in FIG. 1) of the roller 8 are formed on the lower side of the cutter support plate 2a. Further, step portions 25 a and 26 a that are in contact with the plate-like cam 5 are formed at symmetrical positions on both the left and right sides of the cutter support plate 2 a.
もう一つのカッター支持板２ｂは、カッター支持板２ａと同一の外形を有し、ローラ８の回転軸８１（図１に図示）と係合する２つの第１凹部２３ｂ，２４ｂ及び板状カム５と接触する段差部２５ｂ，２６ｂがそれぞれ形成されている。そして、左右方向中央のやや上方には、軸部材７１（図１に図示）が挿通する穴２７が形成されている。 The other cutter support plate 2b has the same outer shape as the cutter support plate 2a, and has two first recesses 23b and 24b that engage with the rotation shaft 81 (shown in FIG. 1) of the roller 8 and the plate-like cam 5. Step portions 25b and 26b are formed in contact with each other. A hole 27 through which the shaft member 71 (shown in FIG. 1) is inserted is formed slightly above the center in the left-right direction.
カッターホイール７の取付けは、カッター支持板２ａに固定された軸部材７１に、カッターホイール７の軸中心に形成された貫通孔を差し入れた後、カッター支持板２ｂの穴２７を差し入れて、一対のカッター支持板２ａ，２ｂでカッターホイール７を回転自在に挟み込む。そして、カッター支持板２ｂの穴２７を通って外に突出した軸部材７１にナット７２（図１に図示）を螺合させて固定する。カッターホイール７は消耗品であるため、カッターホイール７を交換する場合は上記と逆の手順でカッターホイール７を取り外し新しいカッターホイール７を取り付ければよい。 The cutter wheel 7 is attached by inserting a through hole formed in the center of the cutter wheel 7 into the shaft member 71 fixed to the cutter support plate 2a, and then inserting a hole 27 in the cutter support plate 2b. The cutter wheel 7 is rotatably sandwiched between the cutter support plates 2a and 2b. Then, a nut 72 (shown in FIG. 1) is screwed and fixed to a shaft member 71 protruding outward through the hole 27 of the cutter support plate 2b. Since the cutter wheel 7 is a consumable item, when the cutter wheel 7 is replaced, the cutter wheel 7 may be removed and a new cutter wheel 7 may be attached in the reverse procedure.
図４に示すように、ローラ支持板３ａは略半円状であって、ローラ８を回転可能に支持する回転軸８１（図１に図示）が固定される２つの固定用穴３４ａ，３５ａを有し、固定用穴３４ａ，３５ａはボルト１の軸線Ｌ０に対して偏心した位置に形成されている。また、ローラ支持板３ａの上辺の中央には、ボルト１と係合する第２凹部３１が形成されている。また、ローラ支持板３ａの左右の対称位置には、板状カム５と接触し支持する鉤部３２ａ，３３ａが形成されている。 As shown in FIG. 4, the roller support plate 3a is substantially semicircular, and has two fixing holes 34a, 35a to which a rotation shaft 81 (shown in FIG. 1) for rotatably supporting the roller 8 is fixed. The fixing holes 34 a and 35 a are formed at positions eccentric with respect to the axis L 0 of the bolt 1. A second recess 31 that engages the bolt 1 is formed at the center of the upper side of the roller support plate 3a. Further, at the left and right symmetrical positions of the roller support plate 3a, flange portions 32a and 33a that are in contact with and support the plate-like cam 5 are formed.
もう一つのローラ支持板３ｂは、ローラ支持板３ａと略同一の外形を有し、回転軸８１（図１に図示）が固定される２つの固定用穴３４ｂ，３５ｂ及び板状カム５と接触し支持する鉤部３２ｂ，３３ｂがそれぞれ形成されている。ただし、カッターホイール７の軸部材７１と係合する第３凹部３６が、ローラ支持板３ａの第２凹部３１よりも浅く形成されている。 The other roller support plate 3b has substantially the same outer shape as the roller support plate 3a, and comes into contact with the two fixing holes 34b and 35b to which the rotating shaft 81 (shown in FIG. 1) is fixed and the plate-like cam 5. And supporting flanges 32b and 33b are formed respectively. However, the 3rd recessed part 36 engaged with the shaft member 71 of the cutter wheel 7 is formed shallower than the 2nd recessed part 31 of the roller support plate 3a.
図１に示すように、ローラ８の取付けは、所定距離隔てて対向させた一対のローラ支持板３ａ，３ｂの固定用穴３４ａ，３５ａと固定用穴３４ｂ，３５ｂとの間に、ローラ８を回転可能に支持する回転軸８１を取り付けることにより行う。図２に示すように、回転軸８１は左右方向に２本あり４つのローラ８が一対のローラ支持板３ａ，３ｂに取り付けられる。なお、ローラ８の個数の限定はなく、例えば１つであっても構わない。 As shown in FIG. 1, the roller 8 is attached by placing the roller 8 between the fixing holes 34a and 35a and the fixing holes 34b and 35b of the pair of roller support plates 3a and 3b facing each other at a predetermined distance. This is done by attaching a rotating shaft 81 that is rotatably supported. As shown in FIG. 2, there are two rotating shafts 81 in the left-right direction, and four rollers 8 are attached to the pair of roller support plates 3a and 3b. The number of rollers 8 is not limited and may be one, for example.
ローラ８が取り付けられた一対のローラ支持板３ａ，３ｂは、第２凹部３１及び第３凹部３６がボルト１及び軸部材７１と係合し且つ一対のカッター支持板２ａ，２ｂに形成された第１凹部２３ａ，２４ａ，２３ｂ，２４ｂが回転軸８１にそれぞれ係合するように配置される。これにより、ボルト１が回転駆動すると、一対のカッター支持板２ａ，２ｂが回転し、カッター支持板２ａ，２ｂの第１凹部２３ａ，２４ａ，２３ｂ，２４ｂ及び回転軸８１を介して一対のローラ支持板３ａ，３ｂも回転する。 The pair of roller support plates 3a and 3b to which the roller 8 is attached have a second recess 31 and a third recess 36 engaged with the bolt 1 and the shaft member 71 and formed on the pair of cutter support plates 2a and 2b. 1 It arrange | positions so that 1 recessed part 23a, 24a, 23b, 24b may each engage with the rotating shaft 81. FIG. As a result, when the bolt 1 is driven to rotate, the pair of cutter support plates 2a and 2b rotate, and the pair of roller supports is supported via the first recesses 23a, 24a, 23b and 24b and the rotation shaft 81 of the cutter support plates 2a and 2b. The plates 3a and 3b also rotate.
図１に示すように、移動部材４は円柱部４１と、円柱部４１に形成された周状溝部４３に回転自在に嵌め入れられた接続板４２とを有する。円柱部４１には軸方向に雌ネジ穴４１１が形成され、ボルト１と螺合している。そして、接続板４２にはネジ穴４２１が形成されており、ここに板状カム５がネジ（不図示）によって固定される。また、円柱部４１の外方側の外周は所定の隙間を隔てて筒状把持部６で覆われている。筒状把持部６は使用者が把持することによって円柱部４１と接触する程度に変形可能な材質からなる。 As shown in FIG. 1, the moving member 4 includes a column portion 41 and a connection plate 42 that is rotatably fitted in a circumferential groove portion 43 formed in the column portion 41. A female screw hole 411 is formed in the cylindrical portion 41 in the axial direction, and is screwed into the bolt 1. A screw hole 421 is formed in the connection plate 42, and the plate-like cam 5 is fixed thereto by screws (not shown). Further, the outer periphery on the outer side of the cylindrical portion 41 is covered with the cylindrical gripping portion 6 with a predetermined gap therebetween. The cylindrical gripping portion 6 is made of a material that can be deformed to such an extent that it is brought into contact with the cylindrical portion 41 when gripped by the user.
板状カム５は略長方形状であって、上辺はボルト１の軸線Ｌ０と平行な直線であり、下辺には所定の距離を隔てて２つの傾斜部５１，５２が形成されている。傾斜部５１，５２は軸線方向内方側へ行くほど下側に傾斜した形状である。２つの傾斜部５１，５２の間隔は、一対のローラ支持板３ａ，３ｂの間隔と同じに設定されている。そして傾斜部５２の外方側と内方側の端部には段部５３，５４が形成されている。後述するように、この段部５３，５４がローラ支持板３ａ，３ｂの軸方向の移動を規制する。 The plate-like cam 5 has a substantially rectangular shape, the upper side is a straight line parallel to the axis L0 of the bolt 1, and two inclined portions 51 and 52 are formed on the lower side at a predetermined distance. The inclined portions 51 and 52 have a shape inclined downward as they go inward in the axial direction. The interval between the two inclined portions 51 and 52 is set to be the same as the interval between the pair of roller support plates 3a and 3b. Step portions 53 and 54 are formed at the outer and inner ends of the inclined portion 52. As will be described later, the step portions 53 and 54 regulate the movement of the roller support plates 3a and 3b in the axial direction.
板状カム５は、外方側端部に形成された貫通孔５５を接続板４２のネジ穴４２１に重ね合わせた後、ネジ（不図示）によって接続板４２に取り付けられる。なお、図２に示すように、板状カム５は接続板４２の左右に２つ取り付けられる。板状カム５を接続板４２に取り付けた状態図を図５（ａ）に示す。 The plate-like cam 5 is attached to the connection plate 42 with screws (not shown) after the through holes 55 formed in the outer side end portions are overlaid on the screw holes 421 of the connection plate 42. As shown in FIG. 2, two plate-like cams 5 are attached to the left and right of the connection plate 42. A state diagram in which the plate cam 5 is attached to the connection plate 42 is shown in FIG.
図５（ａ）はパイプ切断装置Ｄの通常状態を示す図であり、板状カム５の上辺は一対のカッター支持板２ａ，２ｂの段差部２５ａ，２５ｂに接触している。また、板状カム５の下辺は、一対のローラ支持板３ａ，３ｂに形成された鉤部３２ａ，３２ｂに接触している。より詳細には、板状カム５の傾斜部５２の段部５３がローラ支持板３ｂの鉤部３２ｂと接触している。この状態では、カッターホイール７の第１軸線Ｌ１とローラ８の第２軸線Ｌ２の間隔は最も短い間隔ｄ１である。この状態でパイプ９の端部から内方へパイプ切断装置Ｄを挿入する。なお、パイプ切断装置Ｄのパイプ９への挿入量は、パイプ９の切断位置から予め算出しておく。また、パイプ切断装置Ｄをパイプ９に挿入した状態で、ボルト１及び筒状把持部６の一部がパイプ９の端部から外に露出するように、ボルト１及び筒状把持部６の長さを調整しておく。 FIG. 5A is a diagram showing a normal state of the pipe cutting device D, and the upper side of the plate-like cam 5 is in contact with the step portions 25a and 25b of the pair of cutter support plates 2a and 2b. Further, the lower side of the plate-like cam 5 is in contact with the flange portions 32a and 32b formed on the pair of roller support plates 3a and 3b. More specifically, the step portion 53 of the inclined portion 52 of the plate-like cam 5 is in contact with the flange portion 32b of the roller support plate 3b. In this state, the distance between the first axis L1 of the cutter wheel 7 and the second axis L2 of the roller 8 is the shortest distance d1. In this state, the pipe cutting device D is inserted inward from the end of the pipe 9. The amount of insertion of the pipe cutting device D into the pipe 9 is calculated in advance from the cutting position of the pipe 9. In addition, with the pipe cutting device D inserted into the pipe 9, the length of the bolt 1 and the cylindrical gripping portion 6 is such that part of the bolt 1 and the cylindrical gripping portion 6 is exposed from the end of the pipe 9. Adjust the height.
パイプ切断装置Ｄをパイプ９の所定位置に配置した後、電気ドリルやインパクトドライバーなどの回転駆動装置をボルト１の端部に取り付けて、ボルト１を回転駆動させる。ボルト１が回転駆動すると、ボルト１の内方端部が固定されている一対のカッター支持板２ａ，２ｂが回転する。すると、一対のカッター支持板２ａ，２ｂに形成された第１凹部２３ａ，２４ａ，２３ｂ，２４ｂ及び板状カム５によって一対のローラ支持板３ａ，３ｂも回転する。また、移動部材４の円柱部４１もボルト１と共に供回りする。 After the pipe cutting device D is arranged at a predetermined position of the pipe 9, a rotary driving device such as an electric drill or an impact driver is attached to the end of the bolt 1 to rotate the bolt 1. When the bolt 1 is driven to rotate, the pair of cutter support plates 2a and 2b to which the inner end portion of the bolt 1 is fixed rotate. Then, the pair of roller support plates 3a and 3b is also rotated by the first recesses 23a, 24a, 23b and 24b and the plate-like cam 5 formed in the pair of cutter support plates 2a and 2b. Further, the cylindrical portion 41 of the moving member 4 also rotates with the bolt 1.
次に、筒状把持部６を使用者が把持すると、筒状把持部６の内周面と移動部材４の円柱部４１とが接触し円柱部４１は供回りを停止する。なお、板状カム５に接続している接続板４２は回転を続ける。円柱部４１が供回りを停止すると、移動部材４はボルト１と雌ネジ穴４１１の螺合によって外方側へ移動する。これにより板状カム５も外方側へ移動し、板状カム５に形成された傾斜部５１，５２に沿って一対のローラ支持板３ａ，３ｂは徐々に半径方向外方へ移動する。このとき、筒状把持部６はパイプ切断の入切スイッチの役割を果たし、筒状把持部６を把持する力を調整することによって移動部材４の移動速度すなわち切断速度を調整する役割をも果たす。 Next, when the user grips the cylindrical gripping portion 6, the inner peripheral surface of the cylindrical gripping portion 6 and the cylindrical portion 41 of the moving member 4 come into contact with each other, and the cylindrical portion 41 stops rotating. The connection plate 42 connected to the plate cam 5 continues to rotate. When the cylindrical portion 41 stops rotating, the moving member 4 moves outward by screwing the bolt 1 and the female screw hole 411. As a result, the plate-like cam 5 also moves outward, and the pair of roller support plates 3a, 3b gradually move radially outward along the inclined portions 51, 52 formed in the plate-like cam 5. At this time, the cylindrical gripping portion 6 serves as an on / off switch for pipe cutting, and also adjusts the moving speed of the moving member 4, that is, the cutting speed by adjusting the force for gripping the cylindrical gripping portion 6. .
そして、図５（ｂ）に示すように、カッターホイール７がパイプ９の内周面に垂直に押し当てられた状態で遊星運動しパイプ９は切断されてゆく。一対のローラ支持板３ａ，３ｂが傾斜部５１，５２に沿って半径方向外方へ移動することによって、第１軸線Ｌ１と第２軸線Ｌ２との間隔ｄ２が徐々に広がり、やがてパイプ９は切断される。なお、移動部材４の外方側への移動は、ローラ支持板３ｂの鉤部３２ｂが板状カム５の傾斜部５２の段部５４に当接することによって規制される。 Then, as shown in FIG. 5B, the cutter wheel 7 is planetarily moved while being pressed against the inner peripheral surface of the pipe 9, and the pipe 9 is cut. As the pair of roller support plates 3a and 3b move radially outward along the inclined portions 51 and 52, the distance d2 between the first axis L1 and the second axis L2 gradually increases, and the pipe 9 is eventually cut. Is done. The outward movement of the moving member 4 is restricted by the flange portion 32b of the roller support plate 3b coming into contact with the step portion 54 of the inclined portion 52 of the plate-like cam 5.
なお、板状カム５に形成する傾斜部５１，５２の形状（高低差）は、切断するパイプ９の外径から必要な間隔ｄ２を予め求め、通常状態の間隔ｄ１と間隔ｄ２とから適宜決定すればよい。 In addition, the shape (height difference) of the inclined portions 51 and 52 formed on the plate-like cam 5 is determined as appropriate from the interval d1 and the interval d2 in the normal state by obtaining a necessary interval d2 from the outer diameter of the pipe 9 to be cut. do it.
本発明のパイプ切断装置の切断対象となるパイプの種類に特に限定はなく、金属製パイプや樹脂製パイプなど従来公知のパイプを切断可能である。ただし、パイプの種類によってカッターホイールの材質等を選択し使用する必要がある。 The type of pipe to be cut by the pipe cutting device of the present invention is not particularly limited, and conventionally known pipes such as metal pipes and resin pipes can be cut. However, it is necessary to select and use the cutter wheel material depending on the type of pipe.
また、切断するパイプの外径に合わせて、カッター支持板２ａ，２ｂやローラ支持板３ａ，３ｂ、板状カム５などの大きさ及び形状を適宜変える必要がある。 Further, it is necessary to appropriately change the size and shape of the cutter support plates 2a and 2b, the roller support plates 3a and 3b, the plate-like cam 5 and the like according to the outer diameter of the pipe to be cut.
以上説明した実施形態では、筒状把持部６を設けてパイプ切断の入切スイッチの役割を果たさせていたが、筒状把持部６を設けることなく、ボルト１の駆動回転によってパイプ切断の入切や切断速度を直接調整するようにしても構わない。 In the embodiment described above, the cylindrical gripping portion 6 is provided to serve as an on / off switch for cutting the pipe. However, the pipe cutting is performed by the driving rotation of the bolt 1 without providing the cylindrical gripping portion 6. The on / off and cutting speed may be adjusted directly.
また、通常状態において、第１軸線Ｌ１と第２軸線Ｌ２とが最も短い状態を維持するように、カッターホイール７の軸部材７１とローラ８の回転軸８１との間に引張コイルバネなどの付勢手段を設けるようにしてもよい。 Further, in a normal state, an urging force such as a tension coil spring is provided between the shaft member 71 of the cutter wheel 7 and the rotating shaft 81 of the roller 8 so that the first axis L1 and the second axis L2 are kept shortest. Means may be provided.
本発明のパイプ切断装置によれば、回転軸部の回転によってカッターホイールの回転とパイプ内周面への押しつけがなされるので、従来のようなカムを移動させるための作業が不要となり、作業に比べてより簡便な作業でパイプを切断でき有用である。 According to the pipe cutting device of the present invention, since the rotation of the rotating shaft portion rotates the cutter wheel and presses it against the inner peripheral surface of the pipe, the work for moving the cam as in the prior art becomes unnecessary. Compared to this, it is possible to cut the pipe with a simpler operation.
１ ボルト（軸部材）
２ａ，２ｂ カッター支持板（カッター支持部材）
２３ａ，２３ｂ 第１凹部
２４ａ，２４ｂ 第１凹部
２５ａ，２５ｂ 段差部
２６ａ，２６ｂ 段差部
３ａ，３ｂ ローラ支持板（ローラ支持部材）
３１ 第２凹部
３２ａ，３２ｂ 鉤部
３３ａ，３３ｂ 鉤部
３６ 第３凹部
４ 移動部材（拡開手段）
４１ 円柱部
４２ 接続板
４１１ 雌ネジ穴
５ 板状カム（拡開手段）
５１ 傾斜部
５２ 傾斜部
５３ 段部
５４ 段部
６ 筒状把持部
７ カッターホイール
７１ 軸部材
８ ローラ
８１ 回転軸
９ パイプ
Ｄ パイプ切断装置
Ｌ０ ボルトの回転軸線
Ｌ１ カッターホイールの回転軸線（第１軸線）
Ｌ２ ローラの回転軸線（第２軸線）
1 Bolt (shaft member)
2a, 2b Cutter support plate (cutter support member)
23a, 23b 1st recessed part 24a, 24b 1st recessed part 25a, 25b Step part 26a, 26b Step part 3a, 3b Roller support plate (roller support member)
31 2nd recessed part 32a, 32b collar part 33a, 33b collar part 36 3rd recessed part 4 Moving member (expansion means)
41 cylindrical portion 42 connection plate 411 female screw hole 5 plate cam (expansion means)
51 Inclined portion 52 Inclined portion 53 Stepped portion 54 Stepped portion 6 Tubular gripping portion 7 Cutter wheel 71 Axis member 8 Roller 81 Rotating shaft 9 Pipe D Pipe cutting device L0 Bolt rotating axis L1 Cutter wheel rotating axis (first axis)
L2 Roller axis of rotation (second axis)
Claims (6)
パイプの端部から挿入され回転駆動する回転軸部と、
前記回転軸部によって回転され、前記回転軸部の軸線に対して偏心した第１軸線周りに回転可能にカッターホイールを軸支するカッター支持部材と、
前記回転軸部によって回転され、前記回転軸部の軸線に対して偏心した第２軸線周りに回転可能にローラを軸支するローラ支持部材と、
前記回転軸部の回転によって第１軸線と第２軸線との間隔を広げ、前記カッターホイール及び前記ローラをパイプの内周面に押しつける拡開手段と
を備え、
前記カッターホイールがパイプの内周面に直角に押しつけられた状態で遊星運動することによりパイプを内側から外側に向かって切断することを特徴とするパイプ切断装置。 A device for cutting a pipe from the inside to the outside,
A rotating shaft that is inserted from the end of the pipe and driven to rotate;
A cutter support member that is rotated by the rotating shaft portion and pivotally supports a cutter wheel so as to be rotatable around a first axis that is eccentric with respect to the axis of the rotating shaft portion;
A roller support member that is rotated by the rotary shaft portion and rotatably supports a roller around a second axis that is eccentric with respect to the axis of the rotary shaft portion;
Expanding the space between the first axis and the second axis by the rotation of the rotating shaft portion, and comprising an expanding means for pressing the cutter wheel and the roller against the inner peripheral surface of the pipe,
A pipe cutting device that cuts a pipe from the inside to the outside by performing a planetary motion in a state where the cutter wheel is pressed perpendicularly to the inner peripheral surface of the pipe.
前記拡開手段が、前記雄ネジ部に螺合する雌ネジ穴を有する移動部材と、この移動部材に接続すると共に、前記カッター支持部材及び前記ローラ支持部材に接触し第１軸線と第２軸線との間隔を広げる板状カムとを有する請求項１記載のパイプ切断装置。 A male screw part is formed on at least a part of the rotating shaft part,
The expanding means includes a moving member having a female screw hole screwed into the male screw portion, and is connected to the moving member, and contacts the cutter support member and the roller support member. The first axis and the second axis The pipe cutting device according to claim 1, further comprising a plate-like cam that widens the gap between the pipe and the cam.
前記筒状把持部を把持することによって前記筒状把持部を前記移動部材に接触させて、前記移動部材の前記回転軸部との供回りを停止させ、前記移動部材を前記回転軸部の軸線方向に移動させる請求項２記載のパイプ切断装置。 Covering at least a part of the moving member with a predetermined gap, and further having a cylindrical grip part that is partly exposed from the end of the pipe;
By gripping the cylindrical gripping portion, the cylindrical gripping portion is brought into contact with the moving member, the rotation of the moving member with the rotating shaft portion is stopped, and the moving member is moved along the axis of the rotating shaft portion. The pipe cutting device according to claim 2, wherein the pipe cutting device is moved in a direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015129601A JP2017013148A (en) | 2015-06-29 | 2015-06-29 | Pipe cutting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015129601A JP2017013148A (en) | 2015-06-29 | 2015-06-29 | Pipe cutting device |
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|---|---|
| JP2017013148A true JP2017013148A (en) | 2017-01-19 |
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ID=57828598
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6383125B1 (en) * | 2018-04-11 | 2018-08-29 | パイプシール株式会社 | Pipe cutter |
| CN110076387A (en) * | 2019-05-31 | 2019-08-02 | 张山 | A kind of building steel tube cutter device |
| CN118060613A (en) * | 2024-04-22 | 2024-05-24 | 江苏新长江无缝钢管制造有限公司 | Steel pipe production line and steel pipe cutter thereof |
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|---|---|---|---|---|
| JPS63711U (en) * | 1986-06-20 | 1988-01-06 | ||
| JPH0839336A (en) * | 1994-07-29 | 1996-02-13 | Osaka Gas Co Ltd | Pipe cutter |
| JP2001150223A (en) * | 1999-11-26 | 2001-06-05 | Tokyo Gas Co Ltd | Cutting device for existing pipe |
-
2015
- 2015-06-29 JP JP2015129601A patent/JP2017013148A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63711U (en) * | 1986-06-20 | 1988-01-06 | ||
| JPH0839336A (en) * | 1994-07-29 | 1996-02-13 | Osaka Gas Co Ltd | Pipe cutter |
| JP2001150223A (en) * | 1999-11-26 | 2001-06-05 | Tokyo Gas Co Ltd | Cutting device for existing pipe |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6383125B1 (en) * | 2018-04-11 | 2018-08-29 | パイプシール株式会社 | Pipe cutter |
| CN110076387A (en) * | 2019-05-31 | 2019-08-02 | 张山 | A kind of building steel tube cutter device |
| CN118060613A (en) * | 2024-04-22 | 2024-05-24 | 江苏新长江无缝钢管制造有限公司 | Steel pipe production line and steel pipe cutter thereof |
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