JPH0355170U

JPH0355170U -

Info

Publication number: JPH0355170U
Application number: JP11339289U
Authority: JP
Priority date: 1989-09-29
Filing date: 1989-09-29
Publication date: 1991-05-28

Description

[Brief explanation of drawings]

第１図は、本考案の空気圧式釘打機の縦断面図
、第２図は、第１図の空気圧式釘打機の外観図、
第３図は、第１図における−線断面図、第４
図は、第３図における−線断面図、第５図は
、第４図における−線断面図であつて、釘チ
ヤツクがアンロツクされている状態を示し、第６
図は、第５図と同様の断面図であつて、釘チヤツ
クがロツクされている状態を示し、第７図は、第
１図におけるタイミングバルブ近傍の拡大図であ
るが、逆止弁の一部は設計変更されている。１……釘打機本体、２……打撃シリンダ、３…
…打撃ピストン、４……釘射出孔、５……ノーズ
、６……ドライバ、８……ヘツドバルブ、１７…
…トリガバルブ、３８および３９……エア通路、
４０……制御室、４１……逆止弁、４２……タイ
ミングバルブ、６７……釘プツシユピストン、６
９……釘プツシヤ。 FIG. 1 is a longitudinal sectional view of the pneumatic nailer of the present invention, FIG. 2 is an external view of the pneumatic nailer of FIG. 1,
Figure 3 is a sectional view taken along the - line in Figure 1;
The figure is a cross-sectional view taken along the line -- in Fig. 3, and Fig. 5 is a cross-sectional view taken along the line - - in Fig. 4, showing a state in which the nail chuck is unlocked.
This figure is a cross-sectional view similar to that of FIG. 5, showing a state in which the nail chuck is locked, and FIG. 7 is an enlarged view of the vicinity of the timing valve in FIG. The design of the section has been changed. 1... Nailer main body, 2... Hit cylinder, 3...
...Blowing piston, 4...Nail injection hole, 5...Nose, 6...Driver, 8...Head valve, 17...
...Trigger valve, 38 and 39...Air passage,
40... Control room, 41... Check valve, 42... Timing valve, 67... Nail push piston, 6
9...Nail pushsha.

Claims

[Scope of utility model registration request]

A striking cylinder to which compressed air is supplied and discharged, a striking piston housed in the striking cylinder and driven by compressed air, a driver that is integrally connected to the striking piston as a piston rod and strikes a nail with its tip, and the driver reciprocates. In order to reciprocate the nose that has a nail injection hole and protrudes from the nailer body, and the striking piston, the control room receives a nailing command atmospheric pressure signal and a nailing end compressed air pressure signal, and sends compressed air to the striking cylinder. A head valve that opens and closes to supply and discharge the nail, and a head valve that is attached to the nose so as to be able to reciprocate in the axial direction, and can move forward and backward into the nail injection hole, and in the forward nail driving stroke, When advancing into the nail injection hole, the nail pusher comes into contact with the nail loaded in the nail injection hole, pushes the nail toward the nose tip, and in the return stroke moves away from the nail and retreats out of the nail injection hole. , a nail pusher piston that reciprocates the nail pusher in the axial direction of the nose in response to a nailing command atmospheric pressure signal and a nailing end compressed air pressure signal, and a nailing command atmospheric pressure signal and nails sent to the head valve and the nail pusher piston. A trigger valve that is manually operated to send a compressed air pressure signal at the end of driving is placed in the middle of an air passage that connects the head valve and trigger valve. At the moment when the push piston is located at the top dead center, the air passage is opened and the head valve is opened, while the nail pusher advances into the nail injection hole and the nail pusher is not located at the top dead center.
A timing valve mechanically operated by a nail push piston so as to shut off the air passage and hold the head valve unable to open or close, and a compression valve from the trigger valve to the control chamber of the head valve, regardless of whether the timing valve is opened or closed. A pneumatic nailing machine characterized by having a check valve that allows air to be supplied and prevents compressed air from flowing out from a control chamber of a head valve to a trigger valve.