JP2019072919A - Wet drilling device - Google Patents
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- JP2019072919A JP2019072919A JP2017200410A JP2017200410A JP2019072919A JP 2019072919 A JP2019072919 A JP 2019072919A JP 2017200410 A JP2017200410 A JP 2017200410A JP 2017200410 A JP2017200410 A JP 2017200410A JP 2019072919 A JP2019072919 A JP 2019072919A
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本発明は、コンクリート、タイル、石材等の穿孔対象物に冷却水を供給しながら穿孔を行う湿式穿孔装置に関する。 The present invention relates to a wet drilling apparatus for drilling while supplying cooling water to a drilling object such as concrete, tile, stone and the like.
従来、コンクリート等の穿孔対象物に冷却水を供給しながら穿孔を行う湿式穿孔装置は、ドリルビットが回転するとともに冷却水がドリルビットの先端に供給され、コンクリート躯体との摩擦熱を冷却しながら穿孔する仕組みとなっている（例えば、特許文献１参照。）。ドリルビットの先端に供給された冷却水は、コンクリートの粉（研削粉）と混合された状態で、吸引機により吸引され、回収容器に回収されるため、粉塵が出ない。 Conventionally, in a wet drilling apparatus that performs drilling while supplying cooling water to a target to be drilled such as concrete, the cooling water is supplied to the tip of the drill bit as the drill bit rotates and cools the frictional heat with the concrete body It has a mechanism for drilling (see, for example, Patent Document 1). The cooling water supplied to the tip of the drill bit is sucked by the suction machine in a state of being mixed with the powder of the concrete (grind powder) and collected in the collection container, so that dust does not come out.
図６は従来の湿式穿孔装置の概略構成図である。従来の湿式穿孔装置１００では、作動スイッチを入れると同時に冷却水ポンプ１０１と吸引機１０２が作動し、コンクリート躯体１０３にドリルビット１０４が接触して発生する摩擦熱を冷却水ポンプ１０１により供給される冷却水で冷やしながら穿孔していく。このとき、冷やし終えた冷却水は穿孔時に出た粉塵と一緒に吸引機１０２によって吸い取られる。 FIG. 6 is a schematic block diagram of a conventional wet perforation apparatus. In the conventional wet drilling apparatus 100, the cooling water pump 101 and the suction machine 102 operate at the same time as the operation switch is turned on, and the frictional heat generated by the contact of the drill bit 104 with the concrete casing 103 is supplied by the cooling water pump 101 Perforate while cooling with cooling water. At this time, the cooling water which has been cooled is suctioned off by the suction device 102 together with the dust that has come out at the time of perforation.
しかしながら、上記従来の湿式穿孔装置では、冷却水を供給停止後、吸引機１０２により穿孔穴内を吸引した際、穿孔穴の奥に新たな空気が入っていかないため、穿孔穴内部が真空状態となる。そのため、穿孔深さが深くなればなるほど、吸引機１０２の吸引力では冷却水を吸い取りきれず、穿孔穴の中に水分が残ったままになってしまう。そして、この穿孔穴に接着剤を注入する場合、水分が残ったままでは注入することができないため、エアーダスター等で穴の中を掃除しなければならない。あるいは、穿孔穴内の水分が完全に乾くまで時間を置く必要が出てくる。 However, in the above-mentioned conventional wet drilling apparatus, when the inside of the drilling hole is sucked by the suction machine 102 after the supply of the cooling water is stopped, new air does not enter deep in the drilling hole, so the inside of the drilling hole becomes vacuum. . Therefore, as the drilling depth increases, the suction power of the suction device 102 can not absorb the cooling water, and water remains in the drilling hole. When the adhesive is injected into the perforated hole, it can not be injected while the water remains, so the inside of the hole must be cleaned with an air duster or the like. Alternatively, it may be necessary to allow time for the water in the drilled hole to dry completely.
そこで、本発明は、穿孔対象物に冷却水を供給しながら穿孔を行う湿式穿孔装置において、穿孔穴の中の切削屑のみならず、水分や残り滓等の排出物を容易に取り除くことが可能な湿式穿孔装置を提供することを目的とする。 Therefore, according to the present invention, in a wet drilling apparatus which performs drilling while supplying cooling water to an object to be drilled, it is possible to easily remove not only cuttings in the drilling hole but also discharges such as moisture and debris. It is an object of the present invention to provide a wet drilling apparatus.
本発明の湿式穿孔装置は、回転するドリルビットによって穿孔対象物に穿孔穴を形成する湿式穿孔装置であって、ドリルビットの先端部に冷却水または圧縮エアーを供給するための供給路であり、ドリルビットの回転時に冷却水が供給され、ドリルビットの回転停止時に冷却水に代えて圧縮エアーが供給される供給路と、穿孔穴から冷却水または圧縮エアーを含む排出物を吸引する吸引機構とを有するものである。 The wet drilling apparatus according to the present invention is a wet drilling apparatus that forms a drilling hole in an object to be drilled by a rotating drill bit, and is a supply path for supplying cooling water or compressed air to the tip of the drill bit, A supply path which is supplied with cooling water when the drill bit rotates and supplied with compressed air instead of cooling water when the drill bit stops rotating, and a suction mechanism which sucks the discharge including cooling water or compressed air from the drilled hole The
本発明の湿式穿孔装置によれば、ドリルビットを回転させて穿孔対象物に穿孔穴を形成する穿孔時には、供給路より冷却水がドリルビットの先端部に供給され、ドリルビットの回転による穿孔対象物との摩擦熱を冷却しながら穿孔することができ、冷却を終えた冷却水や穿孔屑等の排出物が吸引機構により吸引される。また、穿孔終了後のドリルビットの回転停止時には、この供給路より冷却水に代えて圧縮エアーがドリルビットの先端部から穿孔穴最深部へ供給されることで、吸引機構により吸引した際に穿孔穴内部が真空状態となることがなく、圧縮エアーが穿孔穴内部を十分に循環することになり、穿孔穴の中に残った水分や残り滓等の***物が穿孔穴最深部から穿孔穴出口まで導かれ、吸引機構により吸引される。 According to the wet drilling apparatus of the present invention, when drilling is performed by rotating the drill bit to form a drilling hole in the drilling object, the cooling water is supplied from the supply passage to the tip of the drill bit and the drilling target is rotated by the rotation of the drill bit. Perforation can be performed while cooling the frictional heat with the object, and the discharged material such as cooling water and drilling debris that has been cooled can be sucked by the suction mechanism. In addition, when the drilling bit is stopped after drilling, compressed air is supplied from the tip of the drill bit to the deepest part of the drilling hole instead of the cooling water from the supply passage, so that drilling is performed by the suction mechanism. The inside of the hole will not be vacuumed, and compressed air will circulate sufficiently inside the hole, and water such as water remaining in the hole and excrement such as remnants are from the deepest part of the hole to the hole outlet It is guided up to and sucked by the suction mechanism.
ここで、本発明の湿式穿孔装置は、供給路に冷却水を供給する逆止弁付き水供給路と、供給路に圧縮エアーを供給する逆止弁付きエアー供給路とを有するものであることが望ましい。これにより、穿孔時に供給路に供給する冷却水が圧縮エアーを供給するエアー供給路に逆流することを防止することができるとともに、穿孔終了後に供給路に圧縮エアーを供給して穿孔穴の中に残った水分や残り滓等の排出物を吸引機構まで導く際には、圧縮エアーが冷却水を供給する水供給路に逆流することを防止することができる。 Here, the wet perforation device according to the present invention has a water supply passage with a check valve for supplying cooling water to the supply passage, and an air supply passage with a check valve for supplying compressed air to the supply passage. Is desirable. As a result, it is possible to prevent the cooling water supplied to the supply channel at the time of drilling from flowing back to the air supply channel supplying compressed air, and at the end of drilling, the compressed air is supplied to the supply channel to enter the drilling hole. When the remaining water and residual matter such as residual cake are introduced to the suction mechanism, it is possible to prevent the compressed air from flowing back to the water supply path for supplying the cooling water.
また、本発明の湿式穿孔装置は、作動スイッチのオン操作により、供給路に冷却水を供給開始するとともに吸引機構を作動させた後、ドリルビットを回転させ、作動スイッチのオフ操作により、ドリルビットの回転を停止させるとともに供給路に圧縮エアーを供給開始した後、供給路への冷却水の供給を停止する制御部を有することが望ましい。これにより、穿孔時には、作動スイッチのオン操作だけで、供給路より冷却水がドリルビットの先端部に供給され、ドリルビットが冷却されながら回転して穿孔し、冷却を終えた冷却水や穿孔屑等の排出物を吸引機構により吸引することができるとともに、穿孔終了後、すなわち、冷却水供給および吸引による穿孔穴内の洗浄完了後に、作動スイッチのオフ操作だけでドリルビットが回転停止して、ドリルビットの先端部から勢い良く圧縮エアーが噴射され、穿孔穴の中に残った水分や残り滓等の排出物を吸引機構まで導いて吸引機構により吸引することができる。 Further, the wet drilling device according to the present invention starts supplying cooling water to the supply path and starts the suction mechanism by turning on the operation switch, then rotates the drill bit and turns off the operation switch to turn the drill bit It is desirable to have a control unit that stops the supply of the cooling water to the supply passage after stopping the rotation of the supply passage and starting the supply of the compressed air to the supply passage. As a result, at the time of drilling, cooling water is supplied from the supply path to the tip of the drill bit only by turning on the operation switch, and the drill bit is cooled while rotating and drilling, and cooling water and drilling debris finished cooling And the like can be aspirated by the aspiration mechanism, and the drill bit is turned off only by turning off the operation switch after completion of drilling, ie, after completion of cleaning in the drilled hole by cooling water supply and suction. Compressed air is vigorously injected from the tip of the bit, and the discharged substances such as water and residue left in the perforated hole can be guided to the suction mechanism and suctioned by the suction mechanism.
（１）ドリルビットの先端部に冷却水または圧縮エアーを供給するための供給路であり、ドリルビットの回転時に冷却水が供給され、ドリルビットの回転停止時に冷却水に代えて圧縮エアーが供給される供給路と、穿孔穴から冷却水または圧縮エアーとともに排出物を吸引する吸引機構とを有する湿式穿孔装置によれば、ドリルビットの先端部に冷却水を供給して冷却しながら穿孔対象物を穿孔した後、ドリルビットの先端部に圧縮エアーを供給して穿孔穴の中の水分や残り滓等の排出物を容易に取り除くことが可能となる。 (1) A supply path for supplying cooling water or compressed air to the tip of the drill bit. Cooling water is supplied when the drill bit rotates, and compressed air is supplied instead of cooling water when the drill bit stops rotating. According to a wet drilling apparatus having a feed path to be taken and a suction mechanism for sucking the discharge together with the cooling water or compressed air from the drilling hole, the object to be drilled while supplying cooling water to the tip of the drill bit for cooling After drilling the hole, compressed air can be supplied to the tip of the drill bit to easily remove the water and residual matter such as residue in the hole.
（２）供給路に冷却水を供給する逆止弁付き水供給路と、供給路に圧縮エアーを供給する逆止弁付きエアー供給路とを有する構成により、穿孔時に冷却水がエアー供給路に逆流することを防止し、穿孔終了後に圧縮エアーが冷却水を供給する水供給路に逆流することを防止することができるので、水供給機構やエアー供給機構等を保護することが可能となる。 (2) The cooling water is supplied to the air supply passage at the time of drilling by the configuration having the water supply passage with the check valve for supplying the cooling water to the supply passage and the air supply passage with the check valve for supplying the compressed air to the supply passage. Since it is possible to prevent the backflow and prevent the compressed air from flowing back to the water supply path for supplying the cooling water after the end of the perforation, it is possible to protect the water supply mechanism, the air supply mechanism and the like.
（３）作動スイッチのオン操作により、供給路に冷却水を供給開始するとともに吸引機構を作動させた後、ドリルビットを回転させ、作動スイッチのオフ操作により、ドリルビットの回転を停止させるとともに供給路に圧縮エアーを供給開始した後、供給路への冷却水の供給を停止する制御部を有することにより、作動スイッチのオン操作およびオフ操作だけで、穿孔時の冷却水の供給および吸引機構の作動ならびにドリルビットの回転から、穿孔終了後のドリルビットの回転停止ならびに圧縮エアーの供給を行うことが可能となり、穿孔作業から穿孔穴の清浄までの一連の作業を容易に行うことが可能となる。 (3) After the coolant supply to the supply path is started and the suction mechanism is activated by turning on the operation switch, the drill bit is rotated and the rotation of the drill bit is stopped by turning off the operation switch and supplied After the supply of compressed air to the passage is started, the controller for stopping the supply of cooling water to the supply passage is provided, so that the cooling water supply and suction mechanism at the time of drilling can be performed only by turning on and off the operation switch. From the operation and rotation of the drill bit, it is possible to stop the rotation of the drill bit after drilling and supply compressed air, which makes it possible to easily carry out a series of operations from the drilling operation to the cleaning of the drilling hole. .
図１は本発明の実施の形態における湿式穿孔装置の全体構成図、図２は図１のドリル部の要部を示す平面図、図３は図２の縦断面図、図４は図２のドリル部の要部を先端側からみた斜視図、図５は図２のドリル部の要部を基部側からみた斜視図である。 1 is an overall configuration diagram of a wet drilling apparatus according to an embodiment of the present invention, FIG. 2 is a plan view showing an essential part of the drill portion of FIG. 1, FIG. 3 is a longitudinal sectional view of FIG. FIG. 5 is a perspective view of the main part of the drill part seen from the tip side, and FIG. 5 is a perspective view of the main part of the drill part shown in FIG. 2 seen from the base side.
図１に示すように、本発明の実施の形態における湿式穿孔装置１は、コンクリート、タイル、石材等の穿孔対象物Ｃに穿孔を行うドリル部２と、ドリル部２に冷却水を供給する水供給部３と、ドリル部２に圧縮エアーを供給するエアー供給部４と、冷却水および圧縮エアーを含む排出物を吸引回収する吸引機構としての吸引回収部５と、ドリル部２、水供給部３、エアー供給部４および吸引回収部５の動作を制御する制御部６とを備える。 As shown in FIG. 1, the wet drilling apparatus 1 according to the embodiment of the present invention is a water supplying a cooling water to a drill unit 2 and a drill unit 2 for drilling a drilling object C such as concrete, tile or stone. The supply unit 3, the air supply unit 4 for supplying compressed air to the drill unit 2, the suction / recovery unit 5 as a suction mechanism for suctioning and collecting the discharge water containing cooling water and compressed air, the drill unit 2, the water supply unit 3 and a control unit 6 that controls the operation of the air supply unit 4 and the suction and recovery unit 5.
ドリル部２は、穿孔対象物Ｃに接して穿孔を行うドリルビット１０と、ドリルビット１０が先端部に取り付けられるシャンク１１と、シャンク１１が固定されるスイベル１２と、スイベル１２の回転体２１を回転させるドリル本体（図示せず。）と、穿孔対象物Ｃに突き当てられ、穿孔をガイドするガイドアタッチメント１４とを備える。ガイドアタッチメント１４は、スライドガイド１５と、スライドガイド１５の先端に取り付けられたノーズブロック１６とを備える。ノーズブロック１６の先端には、穿孔時の排出物が散乱しないように穿孔穴を覆うダストシール１７を備える。 The drill unit 2 includes a drill bit 10 for drilling in contact with the object to be drilled C, a shank 11 to which the drill bit 10 is attached at its tip, a swivel 12 to which the shank 11 is fixed, and a rotating body 21 of the swivel 12 It has a drill body (not shown) to be rotated, and a guide attachment 14 that abuts on the object to be drilled C and guides the drilling. The guide attachment 14 includes a slide guide 15 and a nose block 16 attached to the tip of the slide guide 15. The tip of the nose block 16 is provided with a dust seal 17 covering the perforations so that the discharge during perforation is not scattered.
水供給部３は、冷却水を貯留する水タンク３０と、ドリル部２に冷却水を供給する水供給路としての水供給チューブ３１と、ドリル部２からの冷却水の逆流を防止する逆止弁３２と、水タンク３０の冷却水を水供給チューブ３１へ圧送する圧送ポンプ３３とを備える。なお、図１においては、便宜上、逆止弁３２を水供給チューブ３１の途中に設けているが、後述のように、本実施形態における湿式穿孔装置１では、逆止弁３２は水供給口２３と供給路２５との間に設けられている（図３参照。）。 The water supply unit 3 includes a water tank 30 for storing the cooling water, a water supply tube 31 as a water supply passage for supplying the cooling water to the drill unit 2, and a reverse stop for preventing backflow of the cooling water from the drill unit 2. A valve 32 and a pressure feed pump 33 for pressure feeding the cooling water of the water tank 30 to the water feed tube 31 are provided. In addition, in FIG. 1, although the non-return valve 32 is provided in the middle of the water supply tube 31 for convenience, in the wet perforation apparatus 1 in this embodiment, the non-return valve 32 is a water supply port 23 as mentioned later. And the supply passage 25 (see FIG. 3).
エアー供給部４は、圧縮エアーを生成する圧縮機４０と、ドリル部２に圧縮エアーを供給するエアー供給路としてのエアー供給チューブ４１と、ドリル部２からの圧縮エアーの逆流を防止する逆止弁４２と、圧縮機４０とエアー供給チューブ４１との間に設けられた電磁弁４３とを備える。なお、図１においては、便宜上、逆止弁４２をエアー供給チューブ４１の途中に設けているが、後述のように、本実施形態における湿式穿孔装置１では、逆止弁４２はエアー供給口２４と供給路２５との間に設けられている（図３参照。）。 The air supply unit 4 includes a compressor 40 that generates compressed air, an air supply tube 41 as an air supply path that supplies compressed air to the drill unit 2, and a non-return valve that prevents backflow of compressed air from the drill unit 2. A valve 42 and a solenoid valve 43 provided between the compressor 40 and the air supply tube 41 are provided. In FIG. 1, for convenience, the check valve 42 is provided in the middle of the air supply tube 41. However, as described later, in the wet perforation device 1 in the present embodiment, the check valve 42 is an air supply port 24. And the supply passage 25 (see FIG. 3).
吸引回収部５は、吸引機５０と、ノーズブロック１６に接続された吸引ホース５１と、吸引ホース５１を通じて吸引機５０により吸引回収した冷却水等の排出物を貯留するタンク５２とを備える。吸引回収部５は、ダストシール１７により覆われた穿孔穴内からノーズブロック１６および吸引ホース５１を介して、冷却水または圧縮エアーを含む排出物を吸引回収する。 The suction and recovery unit 5 includes a suction unit 50, a suction hose 51 connected to the nose block 16, and a tank 52 for storing discharges such as cooling water suctioned and collected by the suction unit 50 through the suction hose 51. The suction recovery unit 5 sucks and recovers the discharge material including the cooling water or the compressed air from the inside of the perforated hole covered by the dust seal 17 through the nose block 16 and the suction hose 51.
次に、ドリル部２の詳細について説明する。
図３に示すように、ドリルビット１０内には、ドリルビット１０の先端に冷却水または圧縮エアーを供給する供給路１０Ａが形成されている。ドリルビット１０の先端には供給路１０Ａに連通されたスリット状の吐出口１０Ｂが形成されている。シャンク１１内には、供給路１０Ａに連通する供給路１１Ａが形成されている。
Next, the details of the drill unit 2 will be described.
As shown in FIG. 3, in the drill bit 10, a supply path 10A for supplying cooling water or compressed air to the tip of the drill bit 10 is formed. At the tip of the drill bit 10, a slit-like discharge port 10B communicated with the supply path 10A is formed. In the shank 11, a supply passage 11A communicating with the supply passage 10A is formed.
スイベル１２は、スイベル本体２０内にベアリング２２Ａ，２２Ｂによって回転体２１が回転自在に支持されたものである。回転体２１の基端部はドリル本体の回転駆動軸（図示せず。）に連結され、ドリル本体により回転駆動される。回転体２１内には、シャンク１１内の供給路１０Ａに連通する供給路２１Ａが形成されている。 The swivel 12 is a swivel body 20 in which a rotating body 21 is rotatably supported by bearings 22A and 22B. The proximal end of the rotary body 21 is connected to a rotary drive shaft (not shown) of the drill body and is rotationally driven by the drill body. In the rotating body 21, a supply passage 21A communicating with the supply passage 10A in the shank 11 is formed.
また、スイベル本体２０には、水供給チューブ３１が連結される水供給口２３と、エアー供給チューブ４１が連結されるエアー供給口２４とが設けられている。水供給口２３およびエアー供給口２４は、冷却水または圧縮エアーを供給する共通の供給路２５に連通されている。逆止弁３２は水供給口２３と供給路２５との間に設けられている。逆止弁４２はエアー供給口２４と供給路２５との間に設けられている。供給路２５は、スイベル本体２０と回転体２１との間に形成された隙間１３を介して供給路２１Ａに常時連通されている。 Further, the swivel main body 20 is provided with a water supply port 23 to which the water supply tube 31 is connected, and an air supply port 24 to which the air supply tube 41 is connected. The water supply port 23 and the air supply port 24 are in communication with a common supply path 25 for supplying cooling water or compressed air. The check valve 32 is provided between the water supply port 23 and the supply passage 25. The check valve 42 is provided between the air supply port 24 and the supply passage 25. The supply passage 25 is always in communication with the supply passage 21A via a gap 13 formed between the swivel body 20 and the rotating body 21.
このような構成のドリル部２では、水供給チューブ３１から水供給口２３へ冷却水が供給された際、供給路２５，２１Ａ，１１Ａ，１０Ａを通じてドリルビット１０の先端の吐出口１０Ｂから冷却水が吐出される。このとき、冷却水は逆止弁４２によってエアー供給チューブ４１内を逆流しない。 In the drill unit 2 having such a configuration, when the cooling water is supplied from the water supply tube 31 to the water supply port 23, the cooling water from the discharge port 10B at the tip of the drill bit 10 through the supply paths 25, 21A, 11A, 10A. Is discharged. At this time, the cooling water does not reversely flow in the air supply tube 41 by the check valve 42.
一方、エアー供給チューブ４１からエアー供給口２４へ圧縮エアーが供給された際には、同じく供給路２５，２１Ａ，１１Ａ，１０Ａを通じてドリルビット１０の先端の吐出口１０Ｂから圧縮エアーが吐出される。このとき、圧縮エアーは逆止弁３２によって水供給チューブ３１内を逆流しない。 On the other hand, when the compressed air is supplied from the air supply tube 41 to the air supply port 24, the compressed air is discharged from the discharge port 10B at the tip of the drill bit 10 through the supply paths 25, 21A, 11A, 10A. At this time, the compressed air does not reversely flow in the water supply tube 31 by the check valve 32.
次に、制御部６の詳細について説明する。
制御部６は、作動スイッチ（図示せず。）のオン操作により、圧送ポンプ３３を作動させて供給路２５に冷却水を供給開始するとともに、吸引機５０を作動させた後、ドリル本体を回転駆動させて、ドリルビット１０を回転させるものである。また、制御部６は、作動スイッチのオフ操作により、ドリル本体を回転停止させて、ドリルビット１０の回転を停止させた後、圧送ポンプ３３を停止して供給路２５への冷却水の供給を停止するとともに、電磁弁４３を開いて供給路２５に圧縮エアーを供給開始する。
Next, details of the control unit 6 will be described.
The control unit 6 operates the pressure pump 33 to start supplying cooling water to the supply path 25 by turning on the operation switch (not shown), and operates the suction machine 50, and then rotates the drill body. It is driven to rotate the drill bit 10. In addition, the control unit 6 stops the rotation of the drill bit 10 by stopping the rotation of the drill body by turning off the operation switch, and then stops the pressure pump 33 to supply the cooling water to the supply path 25. While stopping, the solenoid valve 43 is opened to start supplying the compressed air to the supply path 25.
より詳しくは、制御部６は表１に示すような制御を行う。 More specifically, the control unit 6 performs control as shown in Table 1.
表１に示すように、作業者が湿式穿孔装置１を穿孔対象物Ｃにセットし、作動スイッチをオン操作すると、制御部６は圧送ポンプ３３および吸引機５０を作動（オン）させる。このとき、電磁弁４３はオフ（閉）である。なお、圧縮機４０は常時オンである。そして、制御部６は、作動スイッチのオン操作から所定時間経過後（表１の例では２秒後）にドリル本体を作動（オン）させ、ドリルビット１０が回転する。 As shown in Table 1, when the operator sets the wet perforation device 1 to the object to be perforated C and turns on the operation switch, the control unit 6 operates (turns on) the pumping pump 33 and the suction machine 50. At this time, the solenoid valve 43 is off (closed). The compressor 40 is always on. Then, the control unit 6 operates (turns on) the drill main body after a predetermined time has elapsed (after 2 seconds in the example of Table 1) from the on operation of the operation switch, and the drill bit 10 rotates.
そして、穿孔開始から穿孔中にかけて、制御部６は、ドリル本体、圧送ポンプ３３および吸引機５０の作動（オン）状態を維持する。これにより、穿孔対象物Ｃにドリルビット１０が接触して発生する摩擦熱を、圧送ポンプ３３から水供給チューブ３１、水供給口２３、供給路２５，２１Ａ，１１Ａ，１０Ａを通じてドリルビット１０の先端の吐出口１０Ｂから吐出される冷却水で冷やしながら穿孔していく。このとき、冷やし終えた冷却水は穿孔時に出た穿孔屑（粉塵）等の排出物と一緒に吸引ホース５１を通じて吸引機５０によって吸い取られる。 Then, from the start of drilling to the middle of drilling, the control unit 6 maintains the operation (on) state of the drill body, the pressure feed pump 33 and the suction machine 50. Thereby, the frictional heat generated when the drill bit 10 contacts the object C to be drilled is transmitted from the pressure pump 33 through the water supply tube 31, the water supply port 23, and the supply paths 25, 21A, 11A, 10A to the tip of the drill bit 10. The hole is drilled while being cooled by the cooling water discharged from the discharge port 10B. At this time, the cooling water which has been cooled is sucked by the suction unit 50 through the suction hose 51 together with the discharge such as the drilling dust (dust) which has come out at the time of perforation.
その後、穿孔深度に到達し、作業者が作動スイッチをオフ操作すると、制御部６はドリル本体を停止（オフ）させるとともに電磁弁４３をオン（開）とする。これにより、圧縮機４０から電磁弁４３を介し、エアー供給チューブ４１、エアー供給口２４、供給路２５，２１Ａ，１１Ａ，１０Ａを通じてドリルビット１０の先端の吐出口１０Ｂから穿孔穴最深部へ勢い良く圧縮エアーが噴射され、この圧縮エアーにより穿孔穴の中の水分や残り滓等の排出物が穿孔穴出口まで導かれ、ダストシール１７により覆われた穿孔穴内からノーズブロック１６および吸引ホース５１を介して、吸引回収部５により吸引回収される。 After that, when the drilling depth is reached and the operator turns off the operation switch, the control unit 6 stops (turns off) the drill body and turns on (opens) the solenoid valve 43. Thereby, from the compressor 40 through the solenoid valve 43, the air supply tube 41, the air supply port 24, and the supply path 25, 21A, 11A, 10A from the discharge port 10B at the tip of the drill bit 10 to the deepest part Compressed air is jetted, and the compressed air is guided to the outlet of the perforated hole such as moisture and residue from the perforated hole, and from within the perforated hole covered by the dust seal 17 through the nose block 16 and the suction hose 51 The suction and recovery unit 5 sucks and recovers.
また、制御部６は、圧送ポンプ３３を作動スイッチのオフ操作から所定時間経過後（表１の例では２秒後）に停止（オフ）させ、その後、作動スイッチのオフ操作から所定時間経過後（表１の例では６秒後）に吸引機５０を停止する。そして、制御部６は、さらに所定時間経過後（表１の例では５秒後）に電磁弁４３をオフ（閉）にして、穿孔が完了する。なお、制御部６が圧送ポンプ３３、吸引機５０および電磁弁４３をオンまたはオフするまでの時差については適宜調整することが可能である。また、電磁弁４３のオンまたはオフについては手動により操作できるように構成しても良い。 In addition, the control unit 6 stops (turns off) the pressure feed pump 33 after a predetermined time (two seconds in the example of Table 1) after the operation of the operation switch is turned off, and then after the predetermined time has elapsed from the operation of the operation switch The suction device 50 is stopped (after 6 seconds in the example of Table 1). Then, the control unit 6 turns off (closes) the solenoid valve 43 after a predetermined time elapses (after 5 seconds in the example of Table 1), and the perforation is completed. In addition, it is possible to adjust suitably about the time difference until the control part 6 turns on or off the pumping pump 33, the suction machine 50, and the solenoid valve 43. As shown in FIG. In addition, the solenoid valve 43 may be configured to be manually operated.
以上のように、本実施形態における湿式穿孔装置１によれば、ドリルビット１０を回転させて穿孔対象物Ｃに穿孔穴を形成する穿孔時には、供給路２５，２１Ａ，１１Ａ，１０Ａより冷却水がドリルビット１０の先端部に供給され、ドリルビット１０の回転による穿孔対象物Ｃとの摩擦熱を冷却しながら穿孔することができ、冷却を終えた冷却水や穿孔屑等の排出物が吸引回収部５により吸引される。また、穿孔終了後のドリルビット１０の回転停止時には、この供給路２５，２１Ａ，１１Ａ，１０Ａより冷却水に代えて圧縮エアーが供給されることで、ドリルビット１０の先端部から穿孔穴最深部へ勢い良く圧縮エアーが噴射され、穿孔穴の中に残った水分や残り滓等の排出物が穿孔穴最深部から穿孔穴出口まで導かれて、吸引回収部５により吸引される。すなわち、本実施形態における湿式穿孔装置１によれば、ドリルビット１０の先端部に冷却水を供給して冷却しながら穿孔対象物Ｃを穿孔した後、ドリルビット１０の先端部に圧縮エアーを供給して穿孔穴の中の水分や残り滓等の排出物を容易に取り除くことが可能である。 As described above, according to the wet drilling apparatus 1 of the present embodiment, when drilling the drill bit 10 by rotating the drill bit 10 to form a drilling hole, the cooling water is supplied from the supply channels 25, 21A, 11A, 10A. It is supplied to the tip of the drill bit 10 and can be drilled while cooling the frictional heat with the object to be drilled by the rotation of the drill bit 10 while cooling, so that the discharges such as cooling water and drilling waste after cooling are suctioned and recovered It is sucked by the part 5. In addition, when the rotation of the drill bit 10 is stopped after the end of drilling, compressed air is supplied from the supply paths 25, 21A, 11A, 10A instead of the cooling water, and the deepest portion of the drill bit 10 from the tip of the drill bit 10 The compressed air is vigorously jetted, and the discharged matter such as moisture and residue left in the perforated hole is guided from the deepest part of the perforated hole to the perforated hole outlet and sucked by the suction recovery unit 5. That is, according to the wet drilling device 1 in the present embodiment, after the drilling object C is drilled while supplying cooling water to the tip of the drill bit 10 for cooling, compressed air is supplied to the tip of the drill bit 10 Thus, it is possible to easily remove the discharge of water and debris in the drilled hole.
また、本実施形態における湿式穿孔装置１では、穿孔時に冷却水がエアー供給チューブ４１に逆流することを逆止弁４２により防止し、穿孔終了後に圧縮エアーが水供給チューブ３１に逆流することを逆止弁３２により防止することで、圧送ポンプ３３等の水供給機構や、電磁弁４３や圧縮機４０等のエアー供給機構を保護している。 Further, in the wet perforation device 1 according to the present embodiment, the check valve 42 prevents the cooling water from flowing backward to the air supply tube 41 at the time of drilling, and the compressed air flows backward to the water supply tube 31 after the completion of drilling. By preventing by the stop valve 32, the water supply mechanism such as the pressure pump 33 and the air supply mechanism such as the solenoid valve 43 and the compressor 40 are protected.
また、本実施形態における湿式穿孔装置１では、作動スイッチのオン操作およびオフ操作だけで、制御部６によって穿孔時の冷却水の供給および吸引回収部５の作動ならびにドリルビット１０の回転から、穿孔終了後のドリルビット１０の回転停止ならびに圧縮エアーの供給を行うことが可能となっており、穿孔作業から穿孔穴の清浄までの一連の作業を容易に行うことが可能である。 Further, in the wet drilling device 1 according to the present embodiment, the controller 6 only supplies the cooling water at the time of drilling and operates the suction recovery unit 5 and rotates the drill bit 10 only by turning on and off the operation switch. After completion, it is possible to stop the rotation of the drill bit 10 and to supply compressed air, and it is possible to easily perform a series of operations from the drilling operation to the cleaning of the drilling hole.
本発明の湿式穿孔装置は、コンクリート、タイル、石材等の穿孔対象物に冷却水を供給しながら穿孔を行う装置として有用であり、特に、穿孔穴の中の切削屑のみならず、水分や残り滓等の排出物を容易に取り除くことが可能な湿式穿孔装置として好適である。 The wet drilling device of the present invention is useful as a device for performing drilling while supplying cooling water to a drilling object such as concrete, tile, stone and the like, and in particular, not only cuttings in the drilling hole but also moisture and residue It is suitable as a wet perforation device that can easily remove waste such as wrinkles.
１ 湿式穿孔装置
２ ドリル部
３ 水供給部
４ エアー供給部
５ 吸引回収部
６ 制御部
Ｃ 穿孔対象物
１０ ドリルビット
１０Ａ 供給路
１０Ｂ 吐出口
１１ シャンク
１１Ａ 供給路
１２ スイベル
１４ ガイドアタッチメント
１５ スライドガイド
１６ ノーズブロック
１７ ダストシール
２０ スイベル本体
２１ 回転体
２１Ａ 供給路
２２Ａ，２２Ｂ ベアリング
２３ 水供給口
２４ エアー供給口
２５ 供給路
３０ 水タンク
３１ 水供給チューブ
３２ 逆止弁
３３ 圧送ポンプ
４０ 圧縮機
４１ エアー供給チューブ
４２ 逆止弁
４３ 電磁弁
５０ 吸引機
５１ 吸引ホース
５２ タンク
DESCRIPTION OF SYMBOLS 1 Wet drilling apparatus 2 Drill part 3 Water supply part 4 Air supply part 5 Suction collection | recovery part 6 Control part C Drill target object 10 Drill bit 10A Supply path 10B Discharge port 11 Shank 11A Supply path 12 Swivel 14 Guide attachment 15 Slide guide 16 Nose Block 17 Dust seal 20 Swivel main body 21 Rotor 21A Supply passage 22A, 22B Bearing 23 Water supply port 24 Air supply port 25 Supply passage 30 Water tank 31 Water supply tube 32 Check valve 33 Pressure pump 40 Compressor 41 Air supply tube 42 Reverse Stop valve 43 Solenoid valve 50 Suction machine 51 Suction hose 52 Tank
Claims (3)
前記ドリルビットの先端部に冷却水または圧縮エアーを供給するための供給路であり、前記ドリルビットの回転時に前記冷却水が供給され、前記ドリルビットの回転停止時に前記冷却水に代えて前記圧縮エアーが供給される供給路と、
前記穿孔穴から前記冷却水または前記圧縮エアーを含む排出物を吸引する吸引機構と
を有する湿式穿孔装置。 A wet drilling apparatus for forming a drilling hole in a drilling object by a rotating drill bit, comprising:
It is a supply path for supplying cooling water or compressed air to the tip of the drill bit, the cooling water is supplied when the drill bit rotates, and the compression is replaced with the cooling water when the rotation of the drill bit is stopped. A supply path to which air is supplied;
And a suction mechanism for suctioning the discharge containing the cooling water or the compressed air from the hole.
前記供給路に前記圧縮エアーを供給する逆止弁付きエアー供給路と
を有する請求項１記載の湿式穿孔装置。 A water supply passage with a check valve for supplying the cooling water to the supply passage;
The wet perforation device according to claim 1, further comprising an air supply path with a check valve for supplying the compressed air to the supply path.
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| JP2021126878A (en) * | 2020-02-17 | 2021-09-02 | 株式会社丸高工業 | Malfunction countermeasure switch mechanism for wet type electric drill, and wet type electric drill |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6715414B6 (en) | 2020-07-29 |
| JP6715414B2 (en) | 2020-07-01 |
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