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Bolting machine

A technology of screwing and cylinders, applied in power tools, portable mobile devices, manufacturing tools, etc., can solve problems such as reducing exhaust efficiency, and achieve the effect of large exhaust flow and high exhaust efficiency

Inactive Publication Date: 2010-08-18
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, according to the above-mentioned conventional suction flow switching mechanism, in the state where the suction flow is reduced to the small flow side in order to beat the wood, the exhaust flow when the piston moves up is also in a state of being reduced, so There will be a problem of reduced exhaust efficiency

Method used

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Experimental program
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Embodiment Construction

[0037] Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 16. 1 and 2 show the non-operating state (initial state) of the screwing machine 1 according to the present embodiment. The screwing machine 1 includes a main body 2 having an approximately cylindrical shape, and a handle 3 provided in a state protruding from the substantially center of the main body 2 to the side in the longitudinal direction. A trigger valve 4 is arranged near the base of the handle 3. The trigger valve 4 is opened and closed by a trigger 5 that a user performs a pull operation with a fingertip. Since the trigger valve 4 itself is the same as a conventionally known valve, there is no need to change it in particular in this embodiment, so detailed descriptions of its structure and operation are omitted.

[0038] When the user pulls and pulls the trigger 5, a screw S is driven into the screw-driving material W from the front end of the main body 2 (the lower end in ...

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Abstract

The invention provides a bolt drive machine which rotates bolt and drive bolt by using compress air as power source. Under the condition of drive force structure being switched by using steel plate and wooden plate as drive material, air exhaust flow is insufficient when suction flow is reduced. The bolt drive machine is equipped with a valve mainbody (42) movably up and down along an air cylinder (21) axis direction on a valve seat (41), the valve mainbody (42) can be moved upwards through compress air of the air cylinder upper chamber (24) generated by upper moving of a piston (22), consequently, air can be exhausted via a big venthole (42a) and a small venthole (42b).

Description

Technical field [0001] The present invention relates to a screwing machine, which is a so-called pneumatic tool that uses compressed air as a power source. While rotating a screwdriver head with a screw at the front end, it is moved forward in the axial direction to drive the screw into the screw. A screwing machine that drives (screws in) the material. Background technique [0002] For example, in the case of screwing a gypsum board as a surface material on a wooden board as a base material, a screwing machine capable of continuously tightening a plurality of screws is used. This screwing machine adopts a structure that uses the thrust (drive force) of a piston that uses compressed air as a power source and the rotational force (tightening force) of an air motor to move the screwdriver bit in the axial direction while rotating it. According to this structure, During the movement of the screwdriver head, the tip of the screwdriver head is fitted into the screw head of the screw ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25F5/00B25B21/00
Inventor 荒田宪向山兼司芝原显
Owner MAKITA CORP