JPH0536628Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a driving machine for driving hook-shaped fasteners.

[Conventional technology]

The driving machine is composed of a piston driven by power, a drive shaft interlocking with the piston, and a driving part that supports the drive shaft and locks the head of the stopper.

FIG. 6 is a longitudinal sectional side view of a conventional punching section, in which a hook-shaped stopper 3, which is locked in a guide section 2 provided in the punching section 1, is moved around the workpiece by reciprocating the drive shaft 4. I was trying to type into it.

The leg portion 3a of the stopper 3 is brought into contact with the inner wall 2a of the guide portion 2, while the tip portion 3c of the head portion 3b is made to protrude from the groove portion 2b provided in the guide portion 2.

[The problem that the idea attempts to solve]

Since the conventional driving machine has the above-mentioned configuration in which the stopper is locked in the guide part, the applied load point is eccentric and curved as shown in Fig. 7 or 8. In many cases, it was driven in, which had to be pulled out, the bends corrected, and re-driven, resulting in poor work efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide a driving machine that can eliminate the drawbacks of the prior art, reduce the occurrence of damage such as bending of the stopper during driving, and improve work efficiency.

[Means to solve the problem]

The present invention is characterized in that a guide wall for supporting the tip of the head of the stopper is provided in the punching part.

[Effect]

In the present invention, the tip of the head of the hook-shaped fastener is supported by a guide wall provided at the driving part of the driving machine, so that the tip of the hook-shaped fastener is guided by the guide wall during driving. Fasteners can be driven in normally without bending even when subjected to uneven loads.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional side view of a main part of a driving machine showing this embodiment, and FIG. 2 is a sectional view taken along the line A--A in FIG.

In FIGS. 1 and 2, 5 is a cylinder;
6 is a piston that is fitted into the cylinder 5 and is reciprocated by a power source (not shown); 4 is a piston 6;
A drive shaft that drives a hook-shaped stopper 3 into the workpiece, 1 is a punching part, 2 is a guide part provided in the punching part 1, supports the drive shaft 4, and drives a hook-shaped stopper 3 into the workpiece. 3. Lock the head 3b of No.3. The guide part 2 is provided with a groove part 2b, and the stopper 3
The tip portion 3c of the head portion 3b is made to protrude from the groove portion 2b, while the upper portion of the leg portion 3a is brought into contact with the inner wall 2a of the guide portion 2.

In this embodiment, a guide wall is provided by extending the lower end of the punching part 1, and the tip 3c of the stopper 3 is brought into contact with this guide wall.

Therefore, the leg portion 3a of the stopper 3 is supported by the inner wall 2a of the guide portion 2, while the head portion 3b is supported by the guide wall 1a.
Even if the load point struck by the drive shaft 4 is eccentric, it is guided by the inner wall 2a and the guide wall 1a during driving, and the fastener is driven normally without bending.

FIG. 3 is a side view of the stopper 3 showing the state in which it is normally driven into the member 7 to be driven.

In this embodiment, the cross-sectional shape of the guide wall 1a is circular, but the shape may be other than circular and is not well specified.

FIG. 4 is a longitudinal sectional side view of a main part of a driving machine showing another embodiment, and FIG. 5 is a sectional view taken along the line B--B in FIG. 4.

In the embodiment shown in FIGS. 4 and 5, the lower end of the guide part 2 is deformed into a front-back circular shape, and a guide wall 2c is provided at one end of the square part, and the tip part 3c of the stopper 3 is brought into contact with this. However, the effect is the same as in the above embodiment.

[Effect of idea]

According to the present invention, it is possible to obtain a driving machine that eliminates the drawbacks of the prior art, reduces driving errors such as bending of the stopper during driving, and improves work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of the main parts of a driving machine showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1,
Fig. 3 is a side view of the stopper showing the normally driven state, Fig. 4 is a vertical sectional side view of the main part of the driving machine showing another embodiment of the present invention, and Fig. 5 is the same as Fig. 4. It is a sectional view taken along the line B-B. FIG. 6 is a longitudinal sectional view of a nail driving section of a conventional nail gun, and FIGS. 7 and 8 are side views of a nail driven by the conventional nail gun. 1 is a punching part, 2 is a guide part, 1a and 2c are guide walls, 3 is a stopper, 4 is a drive shaft, and 6 is a piston.

Claims (1)

[Scope of utility model registration request] A piston that is reciprocally driven by power, a drive shaft that works in conjunction with the piston and drives a hook-shaped stopper into the workpiece, and a drive shaft that supports the drive shaft and locks the head of the stopper. What is claimed is: 1. A driving machine having a driving part having a diameter of 100 mm, wherein the driving part is provided with a guide wall for supporting the tip of the head of the stopper.