JP2768051B2 - Compressed air screw tightening machine - Google Patents
Compressed air screw tightening machineInfo
- Publication number
- JP2768051B2 JP2768051B2 JP14013791A JP14013791A JP2768051B2 JP 2768051 B2 JP2768051 B2 JP 2768051B2 JP 14013791 A JP14013791 A JP 14013791A JP 14013791 A JP14013791 A JP 14013791A JP 2768051 B2 JP2768051 B2 JP 2768051B2
- Authority
- JP
- Japan
- Prior art keywords
- compressed air
- air
- rotating body
- valve
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は圧縮空気の消費量を少な
くするようにした圧縮空気ネジ締機に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressed air screw tightening machine which reduces the consumption of compressed air.
【0002】[0002]
【従来の技術】図5にかかる圧縮空気ネジ締機の一例を
示す。圧縮空気取入口5をエアコンプレッサ等の圧縮空
気源に接続し、入気弁3を引けば圧縮空気が入気路8を
介して回転体1内に供給されて回転体1が回転し、ギヤ
14で減速され先端にドライブビットを装着した伝達装
置4を介してネジ12を回し、被締付材13にネジ12
をねじ込む。なお回転体1内に供給された圧縮空気は排
気口10を介して排気される。入気弁3を放せば弁が閉
じ回転体1への圧縮空気の供給が止まるので、回転体1
の回転が止まりねじ込みが終る。2. Description of the Related Art FIG. 5 shows an example of a compressed air screw tightening machine. When the compressed air intake 5 is connected to a compressed air source such as an air compressor, and the intake valve 3 is pulled, the compressed air is supplied into the rotating body 1 through the air passage 8 so that the rotating body 1 rotates and the gears are rotated. The screw 12 is turned through the transmission device 4 which is decelerated at 14 and has a drive bit attached to the tip, and the screw 12
Screw. The compressed air supplied into the rotating body 1 is exhausted through the exhaust port 10. When the intake valve 3 is released, the valve closes and the supply of compressed air to the rotating body 1 stops.
Rotation stops and screwing in ends.
【0003】[0003]
【発明が解決しようとする課題】上記したように従来の
圧縮空気ネジ締機は、回転体1への圧縮空気の供給停止
が入気弁3を操作することにより行われる。従って、作
業者は締付完了したことを確認してから入気弁3を閉じ
るため、締付完了後入気弁3が閉じるまでの間、圧縮空
気は無駄に放出されてしまい、空気消費量が多いという
欠点があった。一方建築関係において、石膏ボードの使
用量の増大に伴い、それを止めるボード用ネジの使用量
が増えて来ており、ボード用ネジを締める軽量なネジ締
機の要求が強くなっている。従来は電動式ネジ締機が使
われているが重く、軽量な圧縮空気ネジ締機への要求が
強い。しかし、建築関係で圧縮空気ネジ締機を使用する
場合、圧縮空気源となるコンプレッサが可搬式で小型の
ものであるため従来の圧縮空気ネジ締機では空気消費量
が多く使用できない。従って空気消費量の少ない圧縮空
気ネジ締機の開発の要求が強い。本発明の目的は、上記
した従来の圧縮空気ネジ締機の欠点を改善し、空気消費
量の少ない圧縮空気ネジ締機を提供することである。As described above, in the conventional compressed air screw tightening machine, the supply of the compressed air to the rotating body 1 is stopped by operating the intake valve 3. Therefore, the worker closes the intake valve 3 after confirming that the tightening has been completed, so that the compressed air is wastedly discharged until the intake valve 3 is closed after the completion of the tightening, and the air consumption is reduced. There was a drawback that there were many. On the other hand, in the architectural field, as the amount of gypsum board used increases, the amount of board screws used to stop it increases, and the demand for lightweight screw tightening machines for tightening board screws has increased. Conventionally, electric screwdrivers have been used, but there is a strong demand for heavy, lightweight compressed air screwdrivers. However, when a compressed air screw tightening machine is used for construction, the compressor used as a compressed air source is portable and small, so that a conventional compressed air screw tightening machine cannot use much air. Therefore, there is a strong demand for the development of a compressed air screw tightening machine with low air consumption. SUMMARY OF THE INVENTION An object of the present invention is to improve the above-mentioned drawbacks of the conventional compressed air screwdriver and to provide a compressed air screwdriver that consumes less air.
【0004】[0004]
【課題を解決するための手段】上記目的は、圧縮空気に
より回転される回転体と、該回転体の回転をネジに伝達
する伝達装置及び回転体へ圧縮空気を導く入気路と、該
入気路への圧縮空気の供給を制御する入気弁とを有する
ネジ締機において、ねじ込み完了とほぼ同時に回転体へ
の圧縮空気の供給がなくなる分の空気量を蓄積する空気
室を設け、入気弁により入気路を開き、回転体へ圧縮空
気を送ると同時に空気室への圧縮空気の供給を抑止する
抑止弁を設けることにより達成される。SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotating body rotated by compressed air, a transmission device for transmitting the rotation of the rotating body to a screw, and an air passage for introducing compressed air to the rotating body. In a screwdriver having an intake valve for controlling the supply of compressed air to the air passage, an air chamber is provided for accumulating an air amount sufficient to stop supply of compressed air to the rotating body almost simultaneously with the completion of screwing. This is attained by opening the air passage by the air valve and supplying a compressed air to the rotating body and at the same time providing a suppression valve for suppressing the supply of the compressed air to the air chamber.
【0005】[0005]
【作用】上記のように構成されたネジ締機は次のように
動作する。圧縮空気を供給すると空気室内に圧縮空気が
蓄積され、また入気弁が回転体への入気路を閉じる。入
気弁を引くと空気室内への圧縮空気の供給を抑止弁が抑
止すると同時に、入気弁が回転体への入気路を開き、空
気室内の圧縮空気が回転体に供給されて回転体を回転さ
せる。回転体の回転は伝達装置によりネジに伝達されネ
ジを被締付材にネジ込む。空気室内に蓄積された圧縮空
気のみが回転体に供給されるため空気室内の圧縮空気が
消費されると回転体の回転が止まる。前記入気弁を引
き、空気室内から回転体への入気路へ供給される圧縮空
気量は、1本分のネジ締付に要する空気量のみが蓄積さ
れるように空気室の容量を設定しておく構造により決定
される。The screwing machine constructed as described above operates as follows. When the compressed air is supplied, the compressed air is accumulated in the air chamber, and the intake valve closes the intake path to the rotating body. When the intake valve is pulled, the suppression valve inhibits the supply of compressed air to the air chamber.At the same time, the intake valve opens the air passage to the rotating body, and the compressed air in the air chamber is supplied to the rotating body to rotate the rotating body. To rotate. The rotation of the rotating body is transmitted to the screw by the transmission device, and the screw is screwed into the tightened member. Since only the compressed air stored in the air chamber is supplied to the rotating body, the rotation of the rotating body stops when the compressed air in the air chamber is consumed. Pull the intake valve and set the capacity of the air chamber so that the amount of compressed air supplied from the air chamber to the air supply path to the rotating body accumulates only the amount of air required for tightening one screw. Is determined by the structure to be kept.
【0006】[0006]
【実施例】図1は本発明の一実施例を示すもので、ハウ
ジング7には、圧縮空気源に連結する圧縮空気取入口
5、圧縮空気を蓄積する空気室2、圧縮空気により回転
される回転体1、回転体1へ空気室2から圧縮空気を導
く入気路8、該入気路8を開閉する入気弁3等が設けら
れている。前記回転体1のほぼ中央には上下移動が可能
で回転体1と共に回転可能な移動部材6が設けられてい
る。該移動部材6は回転体1の下端とスプライン結合し
ており、下端部にはネジ12と接触してネジ12をねじ
込むドライブビットからなる伝達装置4を一体に装着し
ている。また上端にはOリングを取付けた大径部を有
し、また上端から下方に沿って延びて周壁に達する***
11を有する。FIG. 1 shows an embodiment of the present invention. A housing 7 is provided with a compressed air inlet 5 connected to a compressed air source, an air chamber 2 for storing compressed air, and rotated by compressed air. A rotating body 1, an air inlet 8 for guiding compressed air from the air chamber 2 to the rotating body 1, an inlet valve 3 for opening and closing the air inlet 8, and the like are provided. A moving member 6 that can move up and down and can rotate together with the rotating body 1 is provided substantially at the center of the rotating body 1. The moving member 6 is spline-coupled to the lower end of the rotating body 1, and has a transmission device 4, which is a drive bit into which the screw 12 is screwed in contact with the screw 12, integrally attached to the lower end. The upper end has a large diameter portion to which an O-ring is attached, and has a small hole 11 extending downward from the upper end to reach the peripheral wall.
【0007】以下動作を説明する。圧縮空気源に圧縮空
気取入口5を接続すると圧縮空気が空気室2に蓄積され
る。次に図2に示す如く、入気弁3を引くと空気室2へ
の入気口9を入気弁3上端の抑止弁16が閉じ、また回
転体1への入気路8を入気弁3が開き、空気室2の圧縮
空気が回転体1に供給され回転体1が回転する。同時に
移動部材6の上部にも圧縮空気が加わるため移動部材6
は回転しながら下降し、移動部材6の伝達装置4がネジ
12と接触してネジ12を回転させ被締付材13にねじ
込む。ネジ12のねじ込みがほぼ完了した位置まで伝達
装置4が移動したところで空気室2からの圧縮空気の供
給がなくなり、また回転体1内の圧縮空気は排気口10
より排気される。一方、移動部材6には前記***11が
設けられているので、移動部材6上方に加えられた圧縮
空気の一部が移動部材下室15に流入し移動部材下室1
5内に蓄積される。The operation will be described below. When the compressed air intake 5 is connected to the compressed air source, the compressed air is accumulated in the air chamber 2. Next, as shown in FIG. 2, when the intake valve 3 is pulled, the intake port 9 to the air chamber 2 is closed, the suppression valve 16 at the upper end of the intake valve 3 is closed, and the intake path 8 to the rotating body 1 is introduced. The valve 3 is opened, and the compressed air in the air chamber 2 is supplied to the rotating body 1 to rotate the rotating body 1. At the same time, compressed air is also applied to the upper part of the moving member 6, so that the moving member 6
The rotating device descends while rotating, and the transmitting device 4 of the moving member 6 comes into contact with the screw 12 to rotate the screw 12 and screw it into the tightened member 13. When the transmission device 4 moves to a position where the screwing of the screw 12 is almost completed, the supply of the compressed air from the air chamber 2 is stopped, and the compressed air in the rotating body 1 is discharged to the exhaust port 10.
More exhausted. On the other hand, since the moving member 6 is provided with the small holes 11, a part of the compressed air added above the moving member 6 flows into the moving member lower chamber 15 and
5 are stored.
【0008】回転体1への圧縮空気の供給がなくなり、
回転体1内の圧縮空気が排気されると同時に移動部材6
上方の空気が排気されることにより、移動部材下室15
に蓄積された圧縮空気の圧力により移動部材6が上昇さ
れ元の位置に戻る。[0008] The supply of compressed air to the rotating body 1 disappears,
At the same time as the compressed air in the rotating body 1 is exhausted,
When the air above is exhausted, the moving member lower chamber 15
The moving member 6 is raised by the pressure of the compressed air accumulated in the moving member 6 and returns to the original position.
【0009】上記実施例によれば、ねじ込みが完了した
位置まで伝達装置4が移動したところで圧縮空気の供給
がなくなる分の空気量を蓄積する空気室2を設け、また
空気室2への入気口9を閉じる抑止弁16と回転体1へ
の入気路8を開く入気弁3を設けたことで、無駄な圧縮
空気を回転体1に供給することがないため空気消費量が
少ない効果がある。ここで空気室2の容積はねじ込み完
了時に圧縮空気がなくなるよう実験的に求め設定する。According to the above-described embodiment, the air chamber 2 is provided for accumulating an amount of air for the supply of the compressed air when the transmission device 4 moves to the position where the screwing is completed. By providing the suppression valve 16 that closes the opening 9 and the intake valve 3 that opens the air passage 8 to the rotating body 1, there is no need to supply useless compressed air to the rotating body 1. There is. Here, the volume of the air chamber 2 is experimentally determined so that the compressed air disappears when the screwing is completed.
【0010】次に他の実施例について説明する。図3は
空気室2と入気弁3と抑止弁16を利用した構造で、ギ
ヤ14と伝達装置4により回転のみをネジ12に伝達す
る構造としてある。上記構成において動作を説明する。
圧縮空気源に圧縮空気取入口5を接続すると圧縮空気が
空気室2に蓄積される。次に入気弁3を引くと、抑止弁
16が空気室への入気口9を閉じ、入気弁3が回転体1
への入気路8を開き、空気室2の圧縮空気が回転体1に
供給され、回転体1が回転し、ギヤ14で減速され伝達
装置4を介してネジ12を回し、被締付材13にネジ1
2をねじ込む。ねじ込みが完了したところで、空気室2
からの圧縮空気の供給がなくなり、また回転体1内部の
圧縮空気は排気口10より排気される。Next, another embodiment will be described. FIG. 3 shows a structure using the air chamber 2, the intake valve 3, and the check valve 16, wherein only the rotation is transmitted to the screw 12 by the gear 14 and the transmission device 4. The operation of the above configuration will be described.
When the compressed air intake 5 is connected to the compressed air source, the compressed air is accumulated in the air chamber 2. Next, when the intake valve 3 is pulled, the suppression valve 16 closes the intake port 9 to the air chamber, and the intake valve 3
The compressed air in the air chamber 2 is supplied to the rotating body 1, the rotating body 1 rotates, is decelerated by the gear 14, rotates the screw 12 via the transmission device 4, and tightens the material to be tightened. 13 screws 1
Screw 2. When the screwing is completed, the air chamber 2
Supply of compressed air from the rotary body 1 is stopped, and the compressed air inside the rotating body 1 is exhausted from the exhaust port 10.
【0011】次に更に他の実施例を図4を参照して説明
する。図4は上記図1の実施例を変形したものである。
図1は入気弁3と抑止弁16が一体となって動き圧縮空
気の供給を制御するものであったが、図4は、圧縮空気
取入口5部に抑止弁16を設け、また入気弁3は回転体
1の上部に設け、操作弁17の操作により圧縮空気の供
給を制御する構造としてある。上記構成において動作を
説明する。圧縮空気源に圧縮空気取入口5を接続すると
圧縮空気が空気室2に蓄積される。また入気弁3、操作
弁17、抑止弁16の上部に圧縮空気が流れ、入気弁
3、操作弁17、抑止弁16を下げる。この時入気弁3
は回転体1に圧縮空気が流れないよう閉じる。操作弁1
7を引くことにより、入気弁3上部の圧縮空気は操作弁
17の排気口18より排気されるので、入気弁3が上昇
して開き空気室2から直接回転体1へ圧縮空気を供給
し、伝達部材4を回転させネジ12をねじ込む。同時に
抑止弁16上部の圧縮空気も操作弁17の排気口18よ
り排気され、抑止弁16も下部に設けられたスプリング
により押されて入気口9を閉じ、圧縮空気源からの圧縮
空気の供給を抑止する。また、操作弁17は、操作弁入
気口19を閉じ、入気弁3上部への圧縮空気の供給を抑
止する。本構造は空気室2を設け、無駄な空気消費を少
なくすると共に、操作弁17の操作によりねじ締付時間
の調整ができる構造である。Next, still another embodiment will be described with reference to FIG. FIG. 4 is a modification of the embodiment of FIG.
FIG. 1 shows that the intake valve 3 and the suppression valve 16 move together to control the supply of compressed air, but FIG. 4 shows that the suppression valve 16 is provided at the compressed air intake 5 and the intake air is controlled. The valve 3 is provided above the rotating body 1, and has a structure in which the supply of compressed air is controlled by operating the operation valve 17. The operation of the above configuration will be described. When the compressed air intake 5 is connected to the compressed air source, the compressed air is accumulated in the air chamber 2. Compressed air flows above the intake valve 3, the operation valve 17, and the suppression valve 16, and lowers the intake valve 3, the operation valve 17, and the suppression valve 16. At this time the intake valve 3
Is closed so that compressed air does not flow to the rotating body 1. Operating valve 1
By pulling 7, the compressed air above the intake valve 3 is exhausted from the exhaust port 18 of the operation valve 17, so that the intake valve 3 is raised and opened, and compressed air is directly supplied from the air chamber 2 to the rotating body 1. Then, the transmission member 4 is rotated and the screw 12 is screwed. At the same time, the compressed air above the check valve 16 is also exhausted from the exhaust port 18 of the operation valve 17, and the check valve 16 is also pushed by the spring provided below to close the air inlet 9, and supply compressed air from the compressed air source. Deter. Further, the operation valve 17 closes the operation valve inlet 19 and suppresses the supply of compressed air to the upper part of the inlet valve 3. This structure is a structure in which the air chamber 2 is provided to reduce unnecessary air consumption, and the screw tightening time can be adjusted by operating the operation valve 17.
【0012】[0012]
【発明の効果】以上のように本発明によれば、ねじ込み
完了とほぼ同時に回転体への圧縮空気の供給がなくなる
分の空気量を蓄積する空気室を設け、また操作すること
により、空気室への入気口を閉じる抑止弁、回転体への
入気路を開く入気弁を設けたことで、無駄な圧縮空気の
消費がなくなり空気消費量を大幅に少なくすることがで
きる。As described above, according to the present invention, an air chamber for accumulating an amount of air for ending the supply of compressed air to the rotating body almost simultaneously with the completion of screwing is provided and operated. By providing the depressing valve that closes the air inlet to the air and the air inlet valve that opens the air path to the rotating body, useless compressed air is not consumed and the air consumption can be significantly reduced.
【図1】 本発明圧縮空気ネジ締機の一実施例を示す断
面図である。FIG. 1 is a sectional view showing an embodiment of a compressed air screw tightening machine of the present invention.
【図2】 図1の動作状態を示す断面図である。FIG. 2 is a sectional view showing an operation state of FIG.
【図3】 本発明圧縮空気ネジ締機の他の実施例を示す
断面図である。FIG. 3 is a sectional view showing another embodiment of the compressed air screw tightening machine of the present invention.
【図4】 本発明圧縮空気ネジ締機の更に他の実施例を
示す断面図である。FIG. 4 is a sectional view showing still another embodiment of the compressed air screw tightening machine of the present invention.
【図5】 従来の圧縮空気ネジ締機の一例を示す断面図
である。FIG. 5 is a sectional view showing an example of a conventional compressed air screw tightening machine.
1は回転体、2は空気室、3は入気弁、4は伝達装置、
5は圧縮空気取入口、6は移動部材、7はハウジング、
8は入気路、9は入気口、10は排気口、11は***、
12はネジ、13は被締付材、14はギヤ、15は移動
部材下室、16は抑止弁、17は操作弁、18は操作弁
排気口、19は操作弁入気口である。1 is a rotating body, 2 is an air chamber, 3 is an intake valve, 4 is a transmission device,
5 is a compressed air intake, 6 is a moving member, 7 is a housing,
8 is an air inlet, 9 is an air inlet, 10 is an air outlet, 11 is a small hole,
12 is a screw, 13 is a member to be tightened, 14 is a gear, 15 is a lower member of a moving member, 16 is a control valve, 17 is an operation valve, 18 is an operation valve exhaust port, and 19 is an operation valve intake port.
Claims (1)
回転体の回転をネジに伝達する伝達装置と、回転体へ圧
縮空気を導く入気路と、該入気路への圧縮空気の供給を
制御する入気弁とを有し、ネジを被締付材にねじ込む圧
縮空気ネジ締機であって、ネジ1本をねじ込むのに必要
な量の圧縮空気を蓄積する空気室を設け、前記入気弁の
動作に従い、前記入気路を開いて該空気室内の圧縮空気
を回転体に供給すると共に前記空気室への圧縮空気の供
給を抑止する抑止弁を有することを特徴とした圧縮空気
ネジ締機。1. A rotating body rotated by compressed air, a transmission device for transmitting rotation of the rotating body to a screw, an air passage for guiding compressed air to the rotating body, and a compressed air flowing into the air passage. An inlet valve for controlling supply, and a compressed air screwdriver for screwing a screw into a member to be tightened, wherein an air chamber for accumulating an amount of compressed air necessary for screwing one screw is provided. According to the operation of the intake valve, a compression valve is provided that opens the intake path and supplies compressed air in the air chamber to a rotating body and inhibits supply of compressed air to the air chamber. Air screw tightener.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14013791A JP2768051B2 (en) | 1991-06-12 | 1991-06-12 | Compressed air screw tightening machine |
US07/893,000 US5231902A (en) | 1991-06-10 | 1992-06-03 | Pneumatically operated screw driver |
DE4219032A DE4219032C2 (en) | 1991-06-10 | 1992-06-10 | Pneumatically operated screwdriver |
KR1019920010001A KR940009926B1 (en) | 1991-06-10 | 1992-06-10 | Pneumatically operated screw driver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14013791A JP2768051B2 (en) | 1991-06-12 | 1991-06-12 | Compressed air screw tightening machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04365562A JPH04365562A (en) | 1992-12-17 |
JP2768051B2 true JP2768051B2 (en) | 1998-06-25 |
Family
ID=15261744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14013791A Expired - Fee Related JP2768051B2 (en) | 1991-06-10 | 1991-06-12 | Compressed air screw tightening machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2768051B2 (en) |
-
1991
- 1991-06-12 JP JP14013791A patent/JP2768051B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH04365562A (en) | 1992-12-17 |
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