JP2008012621A - Portable metal plate cutting device - Google Patents

Portable metal plate cutting device Download PDF

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JP2008012621A
JP2008012621A JP2006185518A JP2006185518A JP2008012621A JP 2008012621 A JP2008012621 A JP 2008012621A JP 2006185518 A JP2006185518 A JP 2006185518A JP 2006185518 A JP2006185518 A JP 2006185518A JP 2008012621 A JP2008012621 A JP 2008012621A
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metal plate
housing
cutting
cutting device
outer peripheral
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JP4420911B2 (en
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Masamitsu Ochiai
正光 落合
Katsuyoshi Oi
勝義 多
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Daia Corp
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Daia Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable metal plate cutting device capable of cutting even a vertically arranged metal plate, being easily carried up to an installation place of the metal plate and independently operating. <P>SOLUTION: This portable metal plate cutting device 110 for cutting the metal plate D such as a shutter is provided with a housing 10 having an internal space 65 opened in one direction, a rotary cutter 70 rotatably supported in the housing 10 so that a part of a plurality of outer peripheral cutting blades 77 formed on an outer periphery may be projected from an opening of the housing 10, and a slit 83 mounted at an opening edge 65a of the housing 10 to pass the projected outer peripheral cutting blades 77. The cutting device 110 includes a pressing member 80 mounted to be approachable/separable to/from the opening edge 65a of the housing 10 to be pressed to the vicinity of a cutting portion when cutting the metal plate D by the rotary cutter 70. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、金属板に押し当てられつつ金属板上を移動させることにより、金属板を所定の線に沿って切断する携帯型金属板切断装置に関する。   The present invention relates to a portable metal plate cutting device that cuts a metal plate along a predetermined line by moving the metal plate while being pressed against the metal plate.

たとえば、鉄筋コンクリートを施工する際に所定形状に配設される鉄筋は、製造上または取扱い上の都合から所定長さとされ、この鉄筋が施工現場において鉄筋コンクリート内に埋設される際、その一端が床面などと面一となるように切断される。鉄筋を切断するには、たとえば本願の出願人が先に出願した、円板状の回転切断具を含む金属棒切断装置（特許文献1参照）が使用される。この金属棒切断装置によれば、回転切断具を床面などに接近させた状態で切断装置を移動させることにより鉄筋が切断される。   For example, a reinforcing bar arranged in a predetermined shape when constructing reinforced concrete has a predetermined length for the convenience of manufacturing or handling. It is cut so as to be flush with each other. In order to cut the reinforcing bar, for example, a metal bar cutting device (see Patent Document 1) including a disk-shaped rotary cutting tool previously applied by the applicant of the present application is used. According to this metal bar cutting device, the rebar is cut by moving the cutting device with the rotary cutting tool approaching the floor surface or the like.

ところで、切断される金属部材には、上記金属棒のほかにも金属板があり、金属板を切断するためのいくつかの金属板切断装置が知られている。たとえば、金属板の一種であるドラム缶の天蓋を切断するドラム缶切り装置（特許文献２参照）は、ドラム缶の胴体部を支持する支持部と、ドラム缶の天蓋を切断する円筒刃とを含む。このドラム缶切断装置は、荷役車両に取り付けて使用され、ドラム缶の胴体部を支持する支持体を荷役車両により支持し、天蓋を切断する円筒刃を荷役車両により下降させる。
特許第３７０５７８２号公報 特開平１０−２４９９２公報 By the way, the metal member to be cut includes a metal plate in addition to the metal rod, and several metal plate cutting devices for cutting the metal plate are known. For example, a drum can opener (see Patent Document 2) that cuts a can of a drum that is a kind of metal plate includes a support that supports the body of the drum and a cylindrical blade that cuts the can of the drum. This drum can cutting device is used by being attached to a cargo handling vehicle, and supports a support body that supports the body portion of the drum can by the cargo handling vehicle, and lowers a cylindrical blade that cuts the canopy by the cargo handling vehicle.
Japanese Patent No. 3,705,782 Japanese Patent Laid-Open No. 10-24992

しかしながら、上記ドラム缶切り装置は、回転しない円筒刃をドラム缶の天蓋に強制的に押し込んで天蓋を切断するものであり、円筒刃による天蓋の切断形状が円形状に限定される。また、円筒刃の寸法（直径）が大きいためにドラム缶切り装置が大きく、作業者が携帯することはできず小型トラックなどで運搬する必要があり、運搬に労力および時間がかかる。さらに、ドラム缶切り装置は単独ではドラム缶の天蓋を切断することはできず、天蓋の切断時は、荷役車両に取り付けなければならない。これでは、たとえば店舗の出入口のシャッタのように垂直に配置された金属板を切断することはできない。   However, the drum can opener forcibly pushes a non-rotating cylindrical blade into the canopy of the drum can to cut the canopy, and the cutting shape of the canopy by the cylindrical blade is limited to a circular shape. In addition, since the size (diameter) of the cylindrical blade is large, the drum can opener is large and cannot be carried by an operator, and must be transported by a small truck or the like, which requires labor and time for transport. Furthermore, the drum can opener alone cannot cut the canopy of the drum can and must be attached to the cargo handling vehicle when the canopy is cut. This makes it impossible to cut a metal plate arranged vertically, such as a shutter at a store entrance.

本発明は以上の事情を背景としてなされたものであり、その目的とするところは、たとえ垂直に配置された金属板であっても任意の形状に切断することができ、コンパクトで金属板の設置場所まで容易に携帯可能であり、しかも他の駆動装置と組み合わせることなく単独で作動可能である携帯型金属板切断装置を提供することにある。   The present invention has been made against the background of the above circumstances, and its purpose is to install a metal plate that is compact and can be cut into an arbitrary shape even if it is a metal plate arranged vertically. It is an object of the present invention to provide a portable metal plate cutting device that can be easily carried to a place and can be operated independently without being combined with other driving devices.

かかる目的を達成するための請求項１にかかる本発明の要旨とするところは、金属板を切断するための携帯型金属板切断装置であって、一方向に開口した内部空間を有するハウジングと、外周に複数の外周切刃が形成され該外周切刃の一部がハウジングの開口から突出するようにハウジングの内部に回転可能に支持された回転切断具と、ハウジングの開口縁に取り付けられ回転切断具の突出した外周切刃を通過させるためのスリットを備えてハウジングの開口縁に対して接近離隔可能に取り付けられ回転切断具で金属板を切断するときに金属板の切断部位の近傍に押し当てられる押当部材と、を含むことにある。   To achieve this object, the gist of the present invention according to claim 1 is a portable metal plate cutting device for cutting a metal plate, the housing having an internal space opened in one direction, A rotary cutting tool that is formed on the outer periphery and is rotatably supported inside the housing such that a part of the outer peripheral cutting blade protrudes from the opening of the housing, and the rotary cutting tool attached to the opening edge of the housing A slit for passing the protruding outer cutting edge of the tool is attached so that it can approach and separate from the opening edge of the housing. When cutting the metal plate with a rotary cutting tool, press against the cutting part of the metal plate And a pressing member to be included.

また、請求項２にかかる発明の要旨とするところは、押当部材は、回転切断具の軸線方向および軸線直交方向に一定の長さを有する押当平面を有し、押当平面の中央部にスリットが形成されていることにある。さらに、請求項３にかかる発明の要旨とするところは、押当部材は、その前端が回転切断具の軸線と平行な軸によりハウジングの一端部に支持されその後端がハウジングの開口縁に接近離隔する方向に揺動可能であり、付勢部材により離隔方向に向かって付勢されストッパにより離隔位置に保持され、回転切断具の突出した外周切刃の両側に位置する一対の保護部をさらに有することにある。   Further, the gist of the invention according to claim 2 is that the pressing member has a pressing plane having a certain length in the axial direction and the direction orthogonal to the axial direction of the rotary cutting tool, and a central portion of the pressing plane. This is because a slit is formed. Further, the gist of the invention according to claim 3 is that the pressing member has a front end supported by one end of the housing by an axis parallel to the axis of the rotary cutting tool, and a rear end approaching and separating from the opening edge of the housing. And a pair of protective portions that are urged toward the separation direction by the urging member, held at the separation position by the stopper, and positioned on both sides of the outer peripheral cutting blade from which the rotary cutting tool protrudes. There is.

請求項１に記載の携帯型金属板切断装置によれば、押当部材を金属板の表面上に押し当てつつ移動させると、回転切断具のうちハウジングの開口から突出した複数の外周切刃が順次金属板に食い込み、金属板を所定の線に沿って切断する。その際、回転切断具が生じさせる金属板の板面方向の反力は、ハウジングの開口縁に取り付けられた押当部材と金属板との間に存在する摩擦のおかげで、携帯型金属板切断装置を把持した作業者の手にあまり加わらず、作業者は容易かつ確実に金属板を切断することができる。   According to the portable metal plate cutting device according to claim 1, when the pressing member is moved while being pressed onto the surface of the metal plate, a plurality of outer peripheral cutting blades protruding from the opening of the housing of the rotary cutting tool are provided. The metal plate is sequentially cut into the metal plate, and the metal plate is cut along a predetermined line. At that time, the reaction force in the direction of the plate surface of the metal plate generated by the rotary cutting tool is due to the friction existing between the pressing member attached to the opening edge of the housing and the metal plate. The operator can easily and reliably cut the metal plate without adding much to the operator's hand holding the apparatus.

請求項２に記載の発明によれば、押当部材は回転切断具の軸線直角方向すなわち押当部材の移動方向、および回転切断具の軸線方向すなわち押当部材の移動方向と直交する方向に一定の長さを有する押圧平面を備えている。これにより、回転切断具による金属板の切断時、押当部材はスリットの周囲の広い面積で金属板の切断部位の近傍に当接するので、携帯型金属板切断装置の姿勢が安定し、金属板を一層容易かつ確実に切断することができる。   According to the second aspect of the present invention, the pressing member is constant in the direction perpendicular to the axis of the rotary cutting tool, that is, the moving direction of the pressing member, and in the direction perpendicular to the axial direction of the rotary cutting tool, that is, the moving direction of the pressing member. A pressing plane having a length of. As a result, when the metal plate is cut by the rotary cutting tool, the pressing member abuts in the vicinity of the cutting portion of the metal plate over a wide area around the slit, so that the posture of the portable metal plate cutting device is stabilized, and the metal plate Can be cut more easily and reliably.

請求項３に記載の発明によれば、押当部材は、その前端が回転切断具の軸線と平行な軸により支持されその後端がハウジングの開口縁に接近離隔する方向に揺動可能で、付勢部材により離隔方向に付勢されストッパにより所定の離隔位置に保持されている。これにより、金属板の切断時は、押当部材の後端がハウジングの開口縁に接近する方向に揺動しスリットに回転切断具の外周切刃を通過させ、金属板に押し当てられて携帯型金属板切断装置を所定の姿勢に保つ。一方、金属板の非切断時は、押当部材の後端がハウジングの開口縁から離間する方向に揺動するが、押当部材の一対の保護部が外周切刃を両側から覆うので、携帯型金属板切断装置の使用者の手などが誤って外周切刃に接触することが防止され、安全性が向上する。   According to the third aspect of the present invention, the pressing member is supported by an axis parallel to the axis of the rotary cutting tool, and the rear end of the pressing member is swingable in a direction approaching and separating from the opening edge of the housing. It is urged in the separation direction by the urging member and is held at a predetermined separation position by the stopper. As a result, when the metal plate is cut, the rear end of the pressing member swings in a direction approaching the opening edge of the housing, the outer peripheral cutting edge of the rotary cutting tool is passed through the slit, and is pressed against the metal plate to be carried. The mold metal plate cutting device is kept in a predetermined posture. On the other hand, when the metal plate is not cut, the rear end of the pressing member swings away from the opening edge of the housing, but the pair of protective portions of the pressing member covers the outer peripheral cutting edge from both sides. The user's hand of the mold metal plate cutting device is prevented from accidentally contacting the outer peripheral cutting blade, and safety is improved.

ハウジングの後端に、回転切断具を回転させる電動機および電動機に電力を供給する蓄電器を搭載することができる。この携帯型金属板切断装置によれば、ハウジングの後端に電動機および蓄電器が搭載されているので、切断しようとする金属板（たとえば店舗の出入口のシャッタ）の設置場所に汎用の電源が存在しなくても作動し、金属板を切断することができる。また、ハウジングの上面に把持用ハンドルを取り付けることができ、その際取付方向が調整可能であることが望ましい。この携帯型金属板切断装置によれば、ハウジングの上面の把持用ハンドルの取付方向が調整可能であるので、取付方向を調整することにより、携帯型金属板切断装置の運搬および携帯型金属板切断装置による金属板の切断が容易になる。   An electric motor that rotates the rotary cutting tool and a battery that supplies electric power to the electric motor can be mounted on the rear end of the housing. According to this portable metal plate cutting device, since the electric motor and the capacitor are mounted on the rear end of the housing, there is a general-purpose power source at the installation location of the metal plate to be cut (for example, the shutter at the entrance of the store). Without it, it works and can cut the metal plate. Further, it is desirable that a grip handle can be attached to the upper surface of the housing, and the attachment direction can be adjusted at that time. According to this portable metal plate cutting device, since the mounting direction of the grip handle on the upper surface of the housing can be adjusted, the portable metal plate cutting device can be transported and the portable metal plate cutting can be performed by adjusting the mounting direction. The metal plate can be easily cut by the apparatus.

以下、本発明の実施例による携帯型金属板切断装置を添付図面を参照しつつ説明する。   Hereinafter, a portable metal plate cutting device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

図１は携帯型金属板切断装置の正面図（一部省略）、図２は同じく平面図（一部省略）、そして図３は図１における縦断面図である。なお、携帯型金属板切断装置は金属板の切断時、図１から図３において右から左に移動されるので、以下の説明では、図１から図３の左方を前方と呼び、右方を後方と呼ぶ。   1 is a front view (partially omitted) of the portable metal plate cutting apparatus, FIG. 2 is a plan view (partially omitted), and FIG. 3 is a longitudinal sectional view of FIG. Since the portable metal plate cutting device is moved from right to left in FIGS. 1 to 3 when cutting the metal plate, in the following description, the left side of FIGS. Is called the rear.

図１から図３において、携帯型金属板切断装置（以下、実施例では「金属板切断装置」と略称する）１１０は、所定形状のハウジング１０、ハウジング１０に回転可能に支持されたチップソー７０、ハウジング１０と一体化されチップソー７０を回転駆動するモータ、ハウジング１０に内蔵されモータの回転駆動力をチップソー７０に伝達する動力伝達機構５０、ハウジング１０に揺動可能に取り付けられ切断される金属板（たとえば、店舗の垂直に配置されたシャッター）Ｄに押し当てられるガイドブラケット８０、および金属板Ｄの切断時に作業者により把持されるハンドル１０１などを含む。   1 to 3, a portable metal plate cutting device (hereinafter abbreviated as “metal plate cutting device”) 110 is a housing 10 having a predetermined shape, a tip saw 70 rotatably supported by the housing 10, A motor that is integrated with the housing 10 and rotationally drives the tip saw 70, a power transmission mechanism 50 that is built in the housing 10 and transmits the rotational driving force of the motor to the tip saw 70, and a metal plate that is swingably attached to the housing 10 and cut. For example, it includes a guide bracket 80 that is pressed against a shutter D arranged vertically in a store, a handle 101 that is gripped by an operator when the metal plate D is cut, and the like.

ハウジング１０はハウジング本体１１、軸受覆い蓋２１、および切断具覆い蓋６１などを有する。ハウジング本体１１の一面（図３において下面）側には低く突出した軸受保持部１２と、高く突出した覆い蓋取付け部１３と、高く突出した軸受保持部兼覆い蓋取付部１４とが形成されている。軸受保持部１２に三つの軸受１６，１７および１８がそれぞれの軸線が平行となるように保持されている。ハウジング本体１１の一面に対向して配置された軸受覆い蓋２１がボルトなどによりハウジング本体１１に固定されている。軸受覆い蓋２１に形成された軸受保持部２２には、三つの軸受２４，２５および２６がそれぞれの軸線が平行となるように保持されている。   The housing 10 includes a housing main body 11, a bearing cover lid 21, a cutting tool cover lid 61, and the like. A bearing holding portion 12 that protrudes low, a cover cover mounting portion 13 that protrudes high, and a bearing holding and cover cover mounting portion 14 that protrudes high are formed on one surface (the lower surface in FIG. 3) of the housing body 11. Yes. Three bearings 16, 17, and 18 are held by the bearing holding portion 12 so that their respective axes are parallel to each other. A bearing cover lid 21 disposed to face one surface of the housing body 11 is fixed to the housing body 11 with bolts or the like. Three bearings 24, 25, and 26 are held in the bearing holding portion 22 formed in the bearing cover lid 21 so that the respective axes are parallel to each other.

ハウジング本体１１の軸受１６には回転軸２８の一端が嵌合され、回転軸２８の他端が軸受覆い蓋２１の軸受２４に嵌合されナット２９により固定され、回転可能な回転軸２８上に歯車３１が固定されている。軸受１７には回転軸２８と平行な回転軸３３の一端が嵌合され、回転軸３３の他端が軸受２５に嵌合され、回転可能な回転軸３３上に固定された歯車３４が上記歯車３１と噛み合っている。軸受１８には回転軸３３と平行な回転軸３６の一端が嵌合され、回転軸３６の他端が軸受２６に嵌合され、回転可能な回転軸３６の一端寄りに固定された歯車３７が上記歯車３４と噛み合っている。回転軸３６の他端寄りには傘歯車部を備えた歯車３８が固定されている。   One end of a rotary shaft 28 is fitted to the bearing 16 of the housing body 11, and the other end of the rotary shaft 28 is fitted to the bearing 24 of the bearing cover lid 21 and fixed by a nut 29, on the rotatable rotary shaft 28. The gear 31 is fixed. One end of a rotating shaft 33 parallel to the rotating shaft 28 is fitted to the bearing 17, the other end of the rotating shaft 33 is fitted to the bearing 25, and a gear 34 fixed on the rotatable rotating shaft 33 is a gear described above. 31 is engaged. One end of a rotary shaft 36 parallel to the rotary shaft 33 is fitted to the bearing 18, and the other end of the rotary shaft 36 is fitted to the bearing 26, and a gear 37 fixed to one end of the rotatable rotary shaft 36 is fixed. The gear 34 meshes with the gear 34. A gear 38 having a bevel gear portion is fixed near the other end of the rotary shaft 36.

上記軸受保持部兼覆い蓋取付部１４には、複数の軸受４１が、その軸線が上記軸受１６などの軸線と直角を成すように保持されている。複数の軸受４１には、回転軸４２の軸方向中間部が嵌合され、回転軸４２の一端（図３において左端）には傘歯車４３が固定され、上記歯車３８の傘歯車部と噛み合っている。傘歯車４３および歯車３８により回転軸４２の回転が、該回転軸４２と直角を成す回転軸３６の回転に変換されている。回転軸４２の他端（図３において右端）には歯車４６が固定されている。   A plurality of bearings 41 are held in the bearing holding / cover cover mounting portion 14 such that the axis thereof is perpendicular to the axis of the bearing 16 or the like. The plurality of bearings 41 are fitted with intermediate portions in the axial direction of the rotating shaft 42, and a bevel gear 43 is fixed to one end (left end in FIG. 3) of the rotating shaft 42, and meshed with the bevel gear portion of the gear 38. Yes. The rotation of the rotating shaft 42 is converted by the bevel gear 43 and the gear 38 into the rotation of the rotating shaft 36 perpendicular to the rotating shaft 42. A gear 46 is fixed to the other end (right end in FIG. 3) of the rotating shaft 42.

軸受保持部兼覆い蓋取付部１４と、これからハウジング本体１１と直交する方向に延びた延長部４７とにわたって配置されたモータ保持部材５１は、筒状部５２とその一端のフランジ部５３とを持つ。モータ保持部材５１の筒状部５２内にモータ（不図示）が収容され、軸受５５で回転可能に支持されたモータの出力軸５６に固定した歯車５７が上記歯車４６と噛み合っている。上記歯車３１，３４，３７，３８、４３，４６および５７により動力伝達機構５０が構成されている。モータの背後にはモータに電力を供給する蓄電器（不図示）が配置されている。モータ保持部材５１のフランジ部５３がボルトにより延長部４７に固定されている。
ハウジング本体１１の上面に取り付けられた把持用ハンドル１０１は垂直部１０２と水平部１０３とを含み、垂直部１０２その軸線の回りに回動可能で、それによって水平部１０３の取付方向を任意の方向に調整できるようになっている。 The motor holding member 51 disposed over the bearing holding / cover cover attaching portion 14 and the extension portion 47 extending in a direction orthogonal to the housing main body 11 has a cylindrical portion 52 and a flange portion 53 at one end thereof. . A motor (not shown) is accommodated in a cylindrical portion 52 of the motor holding member 51, and a gear 57 fixed to an output shaft 56 of a motor rotatably supported by a bearing 55 meshes with the gear 46. The gears 31, 34, 37, 38, 43, 46 and 57 constitute a power transmission mechanism 50. A capacitor (not shown) for supplying electric power to the motor is disposed behind the motor. The flange portion 53 of the motor holding member 51 is fixed to the extension portion 47 by a bolt.
The grip handle 101 attached to the upper surface of the housing body 11 includes a vertical portion 102 and a horizontal portion 103, and can be rotated around the axis of the vertical portion 102, thereby changing the mounting direction of the horizontal portion 103 in an arbitrary direction. Can be adjusted.

次に、店舗などのシャッター、波板（トタン板）またはドラム缶など金属板Ｄを切断する円板形状のチップソー７０について説明する。図３において、ハウジング本体１１の他面にくぼみ１５が形成され、該他面を覆う切断具覆い部６１にもくぼみ６２が形成されている。切断刃覆い部６１はボルト６３によりハウジング本体６１に固定されている。ハウジング本体１１のくぼみ１５と切断具覆い部６１のくぼみ６２とで区画される内部空間６５は下方に開口し、内部空間６５内にチップソー７０が収容され、取付部材６５により回転軸２８に固定されている。
詳述すると、図４に示すように、チップソー７０は中空円板形状の金属板から成り、中心に形成された取付穴７１は円形穴７２と、その外周縁に形成された所定幅および深さの複数の係合溝７３とを含む。一方、取付部材６５は、円形穴７２を貫通する円柱部６６と、係合溝７３に係合する複数の係合突起６７と、取付穴７１の内周縁を押圧する押圧部６８とを有し、ボルトに６９より回転軸２８に固定されている。 Next, a disc-shaped tip saw 70 for cutting a metal plate D such as a shutter in a store, a corrugated plate (toned plate) or a drum can will be described. In FIG. 3, a recess 15 is formed on the other surface of the housing main body 11, and a recess 62 is also formed on the cutting tool covering portion 61 that covers the other surface. The cutting blade covering portion 61 is fixed to the housing main body 61 with a bolt 63. An internal space 65 defined by the recess 15 of the housing main body 11 and the recess 62 of the cutting tool cover 61 opens downward, and the tip saw 70 is accommodated in the internal space 65 and is fixed to the rotary shaft 28 by the mounting member 65. ing.
More specifically, as shown in FIG. 4, the tip saw 70 is made of a hollow disk-shaped metal plate, and the mounting hole 71 formed at the center is a circular hole 72 and a predetermined width and depth formed at the outer periphery thereof. And a plurality of engaging grooves 73. On the other hand, the attachment member 65 has a cylindrical portion 66 that penetrates the circular hole 72, a plurality of engagement protrusions 67 that engage with the engagement groove 73, and a pressing portion 68 that presses the inner periphery of the attachment hole 71. The bolt is fixed to the rotary shaft 28 by 69.

チップソー７０の外周縁には複数の凸部７５と複数の凹部７６とが円周方向で交互に形成され、凸部７５の一面（回転時に前面となる）に超硬合金からなる切刃チップ７７が形成されている。図1から分かるように、チップソー７０の外周の複数の切刃チップ７７のうちの一部が、内部空間６５の開口縁６５ａから下方に突出している。   A plurality of convex portions 75 and a plurality of concave portions 76 are alternately formed in the circumferential direction on the outer peripheral edge of the tip saw 70, and a cutting edge tip 77 made of cemented carbide on one surface of the convex portion 75 (which becomes the front surface during rotation). Is formed. As can be seen from FIG. 1, a part of the plurality of cutting edge tips 77 on the outer periphery of the tip saw 70 protrudes downward from the opening edge 65 a of the internal space 65.

次に、図５を参照しつつ、開口縁６５ａに揺動可能に取り付けられ、チップソー７０を案内するガイドブラケット８０について説明する。ガイドブラケット８０は底板８１、軸部材８６および一対の保護板８８を含む。底板８１は矩形板形状を有し、その下面が押当平面８２となり、その中央部に所定の幅および長さを持つスリット８３が形成されている。底板８１の上面の一端（図３において左端）に立設された支持部８５には底板８１の幅方向に延びる軸部材８６が取り付けられている。底板８１の上面には、スリット８３の両側に同じ形状の一対の保護板８８が所定間隔で立設されている。保護板８８は軸部材８６寄りの比較的低い部分８８ａと、軸部材８６から離れた比較的高い部分８８ｂとを含み、上端縁はチップソー７０の外周縁に対応する円弧状にくぼんでいる。   Next, the guide bracket 80 that is swingably attached to the opening edge 65a and guides the tip saw 70 will be described with reference to FIG. The guide bracket 80 includes a bottom plate 81, a shaft member 86, and a pair of protective plates 88. The bottom plate 81 has a rectangular plate shape, its lower surface is a pressing plane 82, and a slit 83 having a predetermined width and length is formed at the center. A shaft member 86 extending in the width direction of the bottom plate 81 is attached to a support portion 85 erected on one end (left end in FIG. 3) of the upper surface of the bottom plate 81. On the upper surface of the bottom plate 81, a pair of protective plates 88 having the same shape are erected at predetermined intervals on both sides of the slit 83. The protection plate 88 includes a relatively low portion 88 a near the shaft member 86 and a relatively high portion 88 b far from the shaft member 86, and the upper end edge is recessed in an arc shape corresponding to the outer peripheral edge of the tip saw 70.

一方、図２において、ハウジング本体１１の前端から突出した突出部１９には、上記ガイドブラケット８０の軸部材８６が挿通され、ガイドブラケット８０は突出部９１の周りに揺動可能となっている。軸部材８６は突出部９１を貫通して延び、上記回転軸２８と平行で、その先端には、ハウジング本体１１に設けられたストッパ９１に当接可能な当接部材９２が固定されている。ガイドブラケット８０は当接部材９２を介してＬ字形状のばね９４によりその後端部が開口縁６５ａから離隔する方向に付勢されている。すなわち、Ｌ字形状のばね９４は中間の取付部９４ａがボルト９６によりハウジング本体１１に取り付けられ、一方端部９４ｂがハウジング本体１１に立設されたピン９７に係合され、他方端部９４ｃが当接部材９２に立設されたピン９８に係合している。ばね９４、当接部材９２およびストッパ９１などはハウジング本体１１に取り付けられたカバー９９（図１参照、図２および図３では図示省略）で覆われている。   On the other hand, in FIG. 2, the shaft member 86 of the guide bracket 80 is inserted into the projecting portion 19 projecting from the front end of the housing body 11, and the guide bracket 80 can swing around the projecting portion 91. The shaft member 86 extends through the projecting portion 91, is parallel to the rotation shaft 28, and a contact member 92 that can contact the stopper 91 provided on the housing body 11 is fixed to the tip of the shaft member 86. The guide bracket 80 is urged by an L-shaped spring 94 through a contact member 92 in a direction in which a rear end portion thereof is separated from the opening edge 65a. That is, the L-shaped spring 94 has an intermediate mounting portion 94a attached to the housing main body 11 with a bolt 96, one end 94b engaged with a pin 97 erected on the housing main body 11, and the other end 94c. The pin 98 is erected on the contact member 92. The spring 94, the contact member 92, the stopper 91, and the like are covered with a cover 99 (see FIG. 1, not shown in FIGS. 2 and 3) attached to the housing body 11.

以下、本実施例の作用について説明する。ここでは、本実施例の金属板切断装置１１０により金属板Ｄ（図６参照）を切断する場合について説明する。金属板Ｄは、シャッターの場合は垂直に配置され、ドラム缶の場合は水平に配置されている。詳述すると、図１から図３において、一方の手でハンドル１０１を把持し、他方の手でモータ保持部材５１の円筒部５２を支持して、金属板切断装置１１０を持ち運ぶ。モータの回転は、回転軸５６と回転軸２８との間に配置された動力伝達機構５０を介して、回転方向が９０度変換されるとともに、回転数が減速される。その結果、チップソー７０は所定の回転数で図１において反時計方向に回転する。   Hereinafter, the operation of the present embodiment will be described. Here, the case where the metal plate D (refer FIG. 6) is cut | disconnected by the metal plate cutting device 110 of a present Example is demonstrated. The metal plate D is arranged vertically in the case of a shutter, and is arranged horizontally in the case of a drum can. Specifically, in FIGS. 1 to 3, the handle 101 is held with one hand, the cylindrical portion 52 of the motor holding member 51 is supported with the other hand, and the metal plate cutting device 110 is carried. With respect to the rotation of the motor, the rotation direction is changed by 90 degrees and the rotation speed is reduced via the power transmission mechanism 50 disposed between the rotation shaft 56 and the rotation shaft 28. As a result, the tip saw 70 rotates counterclockwise in FIG. 1 at a predetermined rotational speed.

チップソー７０の切刃チップ７７の一部がハウジング本体１１などの開口縁６５ａから下方に突出してる。図６（ａ）に示すように、開口縁６５ａが金属板Ｄの表面に対して所定角度をなすように、金属板切断装置１１０を金属板Ｄに接近させる。このとき、ガイドブラケット８０はばね９４の付勢力で開口縁６５ａから離隔する方向（ここでは下方）に付勢され、当接部材９２がストッパ９１に当接することにより過度の離隔が防止され、所定の離隔位置に保持されている。ガイドブラケット８０の底板８１の長さ方向中間部が開口縁６５ａから突出した切刃チップ７７の近傍に位置し、突出した切刃チップ７７は一対の保護板８８で両側から保護されている。   A part of the cutting edge tip 77 of the tip saw 70 protrudes downward from the opening edge 65a of the housing body 11 or the like. As shown in FIG. 6A, the metal plate cutting device 110 is moved closer to the metal plate D so that the opening edge 65 a forms a predetermined angle with respect to the surface of the metal plate D. At this time, the guide bracket 80 is urged in a direction away from the opening edge 65a (downward here) by the urging force of the spring 94, and the abutment member 92 abuts against the stopper 91 to prevent excessive separation. Is held at a remote position. An intermediate portion in the length direction of the bottom plate 81 of the guide bracket 80 is located in the vicinity of the cutting edge tip 77 protruding from the opening edge 65a, and the protruding cutting edge tip 77 is protected from both sides by a pair of protective plates 88.

底板８１の前端を金属板Ｄに当接させた後、図６（ｂ）に示すように、ハンドル１０１を押し下げて、開口縁６５ａが金属板Ｄと平行となるように金属板切断装置１１０を回動させる。すると、ガイドブラケット８０はばね９４の付勢力に抗して軸部材５６の回りに反時計方向に揺動し、チップソー７０の切刃チップ７７がガイドブラケット８０の底板８１のスリット８３を通過し、押当平面８２に対して垂直に突出して金属板Ｄに食い込む。その後、ガイドブラケット８０の底板８１の押当平面８２を金属板Ｄの表面上の切断部位の近傍に押し当てた状態で、金属板切断装置１１０を前方（図６において左方）に移動させる。すると、回転するチップソー７０の外周の複数の切刃チップ７７が次々と金属板Ｄに食い込み、所定方向に切断する。   After bringing the front end of the bottom plate 81 into contact with the metal plate D, as shown in FIG. 6B, the handle 101 is pushed down, and the metal plate cutting device 110 is moved so that the opening edge 65a is parallel to the metal plate D. Rotate. Then, the guide bracket 80 swings counterclockwise around the shaft member 56 against the biasing force of the spring 94, and the cutting edge tip 77 of the tip saw 70 passes through the slit 83 of the bottom plate 81 of the guide bracket 80, It protrudes perpendicularly to the pressing plane 82 and bites into the metal plate D. Thereafter, the metal plate cutting device 110 is moved forward (leftward in FIG. 6) in a state where the pressing plane 82 of the bottom plate 81 of the guide bracket 80 is pressed near the cutting portion on the surface of the metal plate D. Then, the plurality of cutting edge tips 77 on the outer periphery of the rotating tip saw 70 bite into the metal plate D one after another and cut in a predetermined direction.

本実施例によれば、以下の効果が得られる。まず、本実施例の金属板切断装置１１０は回転するチップソー７０を切断刃として採用しているので、金属板切断装置１１０を金属板Ｄの表面に沿って所定の経路に沿って移動させるのみで、金属板Ｄを所定の形状に切断することができる。チップソー７０がガイドブラケット８０の押当平面８２に対して垂直に下方に突出し、金属板Ｄに垂直に食い込むからである。   According to the present embodiment, the following effects can be obtained. First, since the metal plate cutting device 110 of the present embodiment employs the rotating tip saw 70 as a cutting blade, the metal plate cutting device 110 only needs to be moved along a predetermined path along the surface of the metal plate D. The metal plate D can be cut into a predetermined shape. This is because the tip saw 70 protrudes downward perpendicular to the pressing plane 82 of the guide bracket 80 and bites into the metal plate D vertically.

また、本実施例の金属板切断装置１１０は、金属板Ｄの切断開始時は、前回りに回転するチップソー７０と金属板Ｄとの接触で発生する反力により、金属板切断装置１１０が金属板Ｄの表面に沿って前方に引っ張られる傾向がある。しかし、底板８１の先端部を金属板Ｄに押し当てるので、両者間の間の摩擦のおかげで、ガイドブラケット８０すなわち金属板切断装置１１０が金属板Ｄに対して前方に移動することが防止される。   Further, the metal plate cutting device 110 according to the present embodiment is configured such that when the cutting of the metal plate D is started, the metal plate cutting device 110 is made of metal due to the reaction force generated by the contact between the tip saw 70 rotating in the forward direction and the metal plate D. There is a tendency to be pulled forward along the surface of the plate D. However, since the tip of the bottom plate 81 is pressed against the metal plate D, the guide bracket 80, that is, the metal plate cutting device 110 is prevented from moving forward with respect to the metal plate D due to the friction between the two. The

さらに、本実施例の金属板切断装置１１０は、金属板Ｄを切断する間は、ガイドブラケット８０の底板８１の押当平面８２を金属板Ｄの表面の切断部位の近傍に押し当てるので、切断作業が安定する。矩形板形状の底板８１は広い面積の押当平面８２で金属板Ｄの表面に当接し、その結果金属板切断装置１１０の移動方向および移動方向と直交する方向において、金属板切断装置１１０の姿勢が安定する。これにより、チップソー７０の移動方向が所定状態に維持されるとともに、チップソー７０が金属板Ｄの表面に対してなす角度が直角状態に維持される。   Further, the metal plate cutting device 110 of this embodiment presses the pressing plane 82 of the bottom plate 81 of the guide bracket 80 against the vicinity of the cutting site on the surface of the metal plate D while cutting the metal plate D. Work is stable. The rectangular plate-shaped bottom plate 81 abuts on the surface of the metal plate D with a large area pressing plane 82, and as a result, the metal plate cutting device 110 is moved in the direction perpendicular to the moving direction and the posture of the metal plate cutting device 110. Is stable. Accordingly, the moving direction of the tip saw 70 is maintained in a predetermined state, and the angle formed by the tip saw 70 with respect to the surface of the metal plate D is maintained at a right angle.

また、チップソー７０による金属板Ｄの切断開始時、ガイドブラケット８０の後端が開口縁６５ａから離隔し、チップソー７０の切刃チップ７７の一部が開口縁６５ａから下方に突出する。しかし、ガイドブラケット８０の一対の保護板８８がチップソー７０の両側に位置しているので、作業者が誤ってチップソー７０の切刃チップ７７に手などを触れる心配はなく、安全である。   Further, when the cutting of the metal plate D by the tip saw 70 is started, the rear end of the guide bracket 80 is separated from the opening edge 65a, and a part of the cutting edge tip 77 of the tip saw 70 protrudes downward from the opening edge 65a. However, since the pair of protective plates 88 of the guide bracket 80 are located on both sides of the tip saw 70, there is no worry that an operator accidentally touches the cutting edge tip 77 of the tip saw 70 with his / her hand.

さらに、本実施例の金属板切断装置１１０は、コンパクトな構造で、外形寸法が小さく、軽量であるので、携帯が可能である。従って、金属板Ｄがどこに設置してある場合でも、その設置場所に金属板切断装置１１０を携行し、迅速に金属板Ｄを切断することができる。加えて、本実施例の金属板切断装置１１０は、モータに電力を供給する蓄電器を内蔵しているので、汎用の電源が確保できない場所にある金属板Ｄでも切断することができる。
さらに、ハウジング本体１１の上面に取付ける把持用ハンドル１０１の水平部１０３はその取付方向が調整可能であるので、ハンドル１０１の取付方向を切断の都合に応じて調整することができ、これにより金属板切断装置１１０による金属板Ｄの切断作業がより容易になる。 Furthermore, since the metal plate cutting device 110 of the present embodiment has a compact structure, a small outer dimension, and a light weight, it can be carried. Therefore, wherever the metal plate D is installed, the metal plate cutting device 110 can be carried to the installation location and the metal plate D can be cut quickly. In addition, since the metal plate cutting device 110 of the present embodiment has a built-in capacitor that supplies electric power to the motor, the metal plate D can be cut even in a place where a general-purpose power source cannot be secured.
Further, since the mounting direction of the horizontal portion 103 of the grip handle 101 attached to the upper surface of the housing main body 11 can be adjusted, the mounting direction of the handle 101 can be adjusted according to the convenience of cutting. The cutting work of the metal plate D by the cutting device 110 becomes easier.

以上、本発明の好適な実施例を図面を参照しつつ説明したが、本発明これに限定されるものではなく、別の態様においても実施することができる。まず、ハウジング１０は、少なくともチップソー７０を回転可能に支持すれば良く、上記実施例のようにハウジング本体１１、軸受覆い蓋２１、および切断具覆い蓋６１を含むことは不可欠ではない。また、回転切断具たるチップソー７０の中心の取付穴７１の具体的構成や、外周の切刃チップ７７の構成は、上記実施例のものに限定されない。   As mentioned above, although the suitable Example of this invention was described referring drawings, this invention is not limited to this, It can implement also in another aspect. First, the housing 10 only needs to support at least the tip saw 70 in a rotatable manner, and it is not essential to include the housing main body 11, the bearing cover lid 21, and the cutting tool cover lid 61 as in the above embodiment. Further, the specific configuration of the mounting hole 71 at the center of the tip saw 70 that is a rotary cutting tool and the configuration of the outer peripheral cutting edge tip 77 are not limited to those of the above embodiment.

また、押当部材たるガイドブラケット８０に関し、上記実施例では、金属板切断装置１１０の移動方向に対して、チップソー７０が前回りに回転し、これとの関係でガイドブラケット８０の底板８１の前端がハウジング本体１１の前端に枢支され、後端が揺動するようになっていた。しかし、チップソー７０の回転方向およびガイドブラケット８０の底板８１の揺動方向はこれに限定されず、たとえばチップソー７０が後ろ回りに回転し、底板８１の後端がハウジング本体１１の後端に枢支され前端が揺動するようになっていても良い。   In addition, regarding the guide bracket 80 as a pressing member, in the above embodiment, the tip saw 70 rotates forward with respect to the moving direction of the metal plate cutting device 110, and the front end of the bottom plate 81 of the guide bracket 80 is related to this. Is pivotally supported by the front end of the housing body 11 and the rear end swings. However, the rotation direction of the tip saw 70 and the swinging direction of the bottom plate 81 of the guide bracket 80 are not limited to this. For example, the tip saw 70 rotates backward, and the rear end of the bottom plate 81 pivots to the rear end of the housing body 11. The front end may swing.

さらに、回転切断具に対するモータの位置および方向や、モータの駆動力を回転切断具に伝達する動力伝達機構５０の構成は上記実施例のものに限定されない。具体的には、回転切断具７０の軸線とモータの軸線とが直角以外の角度をなしても良いし、動力伝達機構５０を構成する歯車の個数は実施例のものよりも多くても少なくても良い。また、把持用ハンドル１０１を設けることは不可欠ではなく、廃止することもでき、その場合はたとえばハウジングの一部やモータ保持部材を保持する。また、把持用ハンドルを設ける場合でも、その配置場所はハウジングの上面に限らない。
さらに、本発明の携帯型金属板切断装置は水平に配置されるドラム缶の胴体部や天板のほか、波板（トタン板）、垂直に配置される店舗の入口のシャッタなど、種々の金属板を切断することもできる。 Further, the position and direction of the motor with respect to the rotary cutting tool and the configuration of the power transmission mechanism 50 that transmits the driving force of the motor to the rotary cutting tool are not limited to those of the above embodiments. Specifically, the axis of the rotary cutting tool 70 and the axis of the motor may form an angle other than a right angle, and the number of gears constituting the power transmission mechanism 50 may be larger or smaller than that of the embodiment. Also good. In addition, providing the grip handle 101 is not indispensable and can be eliminated. In this case, for example, a part of the housing or a motor holding member is held. Even when the grip handle is provided, the location is not limited to the upper surface of the housing.
Furthermore, the portable metal plate cutting device of the present invention includes various metal plates such as a corrugated plate (tonned plate), a shutter at the entrance of a store arranged vertically, in addition to a drum can body and a top plate arranged horizontally. Can also be cut.

本発明の実施例による携帯型金属板切断装置の一部の図示を省略した正面図である。It is the front view which abbreviate | omitted illustration of the portable metal plate cutting device by the Example of this invention. 上記実施例による携帯型金属板切断装置の一部の図示を省略した平面図である。It is the top view which abbreviate | omitted illustration of the portable metal plate cutting device by the said Example. 図１における横断面図である。It is a cross-sectional view in FIG. 上記実施例の回転切断具の正面図である。It is a front view of the rotary cutting tool of the said Example. 上記実施例のガイドブラケットを示し、（ａ）はガイドブラケットの正面図、（ｂ）はガイドブラケットの縦断面図、（ｃ）はガイドブラケットの横断面図である。The guide bracket of the said Example is shown, (a) is a front view of a guide bracket, (b) is a longitudinal cross-sectional view of a guide bracket, (c) is a cross-sectional view of a guide bracket. 上記実施例の作用を示し、（ａ）は切断開始時の携帯型金属板切断装置の状態を示し、（ｂ）は切断中の携帯型金属板切断装置の状態を示す。The operation of the above embodiment is shown, (a) shows the state of the portable metal plate cutting device at the start of cutting, and (b) shows the state of the portable metal plate cutting device during cutting.

符号の説明Explanation of symbols

１０：ハウジング、 １１：ハウジング本体、 ２１：軸受覆い蓋、 ２８，３３，３６および４２：回転軸、 ５０：動力伝達機構、 ６１：切断具覆い板、 ６５：内部空間、 ６５ａ：開口縁、 ７０：チップソー（回転切断具）、 ７１：中心穴、 ７７：切刃チップ（外周切刃）、 ８０：ガイドブラケット（押当部材）、 ８１：底板、 ８３：スリット、 ８８：保護板、 ９１：ストッパ、 ９４：ばね、 １１０：携帯型金属板切断装置、 Ｄ：金属板



10: Housing, 11: Housing body, 21: Bearing cover lid, 28, 33, 36 and 42: Rotating shaft, 50: Power transmission mechanism, 61: Cutting tool cover plate, 65: Internal space, 65a: Opening edge, 70 : Tip saw (rotary cutting tool), 71: Center hole, 77: Cutting edge tip (outer peripheral cutting edge), 80: Guide bracket (pressing member), 81: Bottom plate, 83: Slit, 88: Protection plate, 91: Stopper 94: Spring 110: Portable metal plate cutting device D: Metal plate



Claims (3)

金属板を切断するための携帯型金属板切断装置であって、
一方向に開口した内部空間を有するハウジングと、
外周に複数の外周切刃が形成され、該外周切刃の一部が前記ハウジングの開口から突出するように該ハウジングの内部に回転可能に支持された回転切断具と、
前記ハウジングの開口縁に取り付けられ、前記回転切断具の突出した外周切刃を通過させるためのスリットを備えて前記ハウジングの開口縁に対して接近離隔可能に取り付けられ、該回転切断具で前記金属板を切断するときに該金属板の切断部位の近傍に押し当てられる押当部材と、
を含むことを特徴とする携帯型金属板切断装置。 A portable metal plate cutting device for cutting a metal plate,
A housing having an internal space opened in one direction;
A plurality of outer peripheral cutting edges formed on the outer periphery, and a rotary cutting tool supported rotatably inside the housing such that a part of the outer peripheral cutting blade protrudes from the opening of the housing;
It is attached to the opening edge of the housing, and is provided with a slit for allowing the protruding outer peripheral cutting edge of the rotary cutting tool to pass through, and is attached to the opening edge of the housing so as to be able to approach and separate from the metal. A pressing member pressed against the vicinity of the cutting portion of the metal plate when cutting the plate;
A portable metal plate cutting device comprising: 前記押当部材は、前記回転切断具の軸線方向および軸線直交方向に一定の長さを有する押当平面を有し、該押当平面の中央部に前記スリットが形成されていることを特徴とする請求項１に記載の携帯型金属板切断装置。   The pressing member has a pressing plane having a certain length in an axial direction and an axis orthogonal direction of the rotary cutting tool, and the slit is formed in a central portion of the pressing plane. The portable metal plate cutting device according to claim 1. 前記押当部材は、その前端が前記回転切断具の軸線と平行な軸により前記ハウジングの一端部に支持されその後端が前記ハウジングの開口縁に接近離隔する方向に揺動可能であり、付勢部材により離隔方向に付勢されストッパにより離隔位置に保持され、前記回転切断具の突出した外周切刃の両側に位置する一対の保護部をさらに有することを特徴とする請求項２に記載の携帯型金属板切断装置。


The pressing member has a front end supported on one end of the housing by an axis parallel to the axis of the rotary cutting tool, and a rear end swingable in a direction approaching and separating from the opening edge of the housing. The mobile phone according to claim 2, further comprising a pair of protection portions that are urged in a separation direction by a member and are held at a separation position by a stopper, and are positioned on both sides of an outer peripheral cutting blade from which the rotary cutting tool protrudes. Mold metal plate cutting device.


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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009241250A (en) * 2008-03-11 2009-10-22 Hitachi Koki Co Ltd Desktop cutting machine
WO2011026303A1 (en) * 2009-09-07 2011-03-10 宁波捷美进出口有限公司 Hand-held circular saw guard locking mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101483773B1 (en) 2013-11-01 2015-01-16 김상선 Electrically powered iron bar cutting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009241250A (en) * 2008-03-11 2009-10-22 Hitachi Koki Co Ltd Desktop cutting machine
WO2011026303A1 (en) * 2009-09-07 2011-03-10 宁波捷美进出口有限公司 Hand-held circular saw guard locking mechanism

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