JPH091476A - Nailing machine - Google Patents

Abstract

PURPOSE: To provide a nailing machine by which a dowel can be driven without damaging its tip part. CONSTITUTION: In a nailing device provided with an injection part 1 from which a nail is injected and a driver 3 hitting the nail fed to the injection part 1, a guide groove 10 receiving an upper half of a nail shaft part in a dowel 6 is formed so as to be opened in the tip center part of the driver 3, while a hitting part 11 matching with a slanting face part 10 connected to the tip part 8 in the received dowel 6 is formed in the guide groove 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nailing machine for driving headless headed dowels with sharp ends.

[0002]

2. Description of the Related Art Generally, when one wooden member is bonded and fixed to another wooden member, it is necessary to temporarily fix the one member until the adhesive material dries. Therefore, conventionally, as shown in FIG. 7, a dowel 16 is attached to the adhesive application side of one member 15.
It is performed that only half of the dowel is driven and the member 15 is tapped in this state to drive the other half of the dowel 16 to the other member 17. There is no special means for driving the dowel 16 into the one member 15, and it is actually practiced to hit the tip with a tool such as an ordinary hammer or punch.

However, when a hammer is used, both ends of the dowel 16 are sharp, and therefore, when one end is hit, the tip of the dowel is crushed, and the penetration resistance of the crushed end increases. For this reason, when the one member 15 is struck at the time of temporary fixing, the dowel 16 is less likely to be driven into the other member 17, and rather tends to enter deeper into the one member 15 as indicated by arrow a. However, there is a drawback that the temporary fixing effect is weakened.

Further, when hitting a dowel with a tool such as a punch, it is necessary to hold the tool and the dowel perpendicularly to the member and drive them in, which requires skill and is troublesome.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a nailing machine which solves the above-mentioned drawbacks and which can drive the dowel tips without crushing them.

[0006]

To achieve the above object, a nailing machine according to the present invention is a nailing machine provided with an injection part for ejecting a nail and a driver for ejecting a nail supplied to the injection part. In the center of the tip of the driver, a guide groove for receiving the upper half of the nail shaft of the dowel is formed, and
The guide groove is characterized in that a striking portion is formed which engages with a beveled portion following the sharpened tip of the dowel received.

[0007]

In the above structure, when the dowel is supplied to the injection part and the nailing machine is driven, the driver is driven downward, so that the beating part is in the middle of the sloped surface continuing to the upper tip of the dowel in the guide groove. Since the part is hit, the dowel is driven from the injection part and driven into the material to be driven. The driving depth is determined by the position of the tip of the driver, but the dowel is almost immersed in the lower half of the dowel.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the essential parts of a nailing machine, and the reference numeral 1 shows an injection part. The above-described nailing machine has the same basic mechanism as that of a conventional tacker or a nailing machine for finishing nails. A guide recess 4 for guiding the sliding of the driver 3 is formed, and the rear wall is open to the magazine 5. Dowels 6 are loaded in the magazine 5 in a linked state. Also, dowel 6
Is always pressed forward by the pusher 7, and the frontmost dowel 6a is supplied to the injection unit 1.

The dowel 6 is formed by press-molding a metal plate-like material, has a rectangular cross section, and both ends 8 are sharp. The part following the tip part 8 is inclined and is formed as a slope part 9.

As shown in FIG. 3, the driver 3 is an elongated plate having a thickness substantially the same as the thickness of the dowel 6, and is linked to a drive mechanism provided on the body. When driving, the guide recess of the front wall 1a is provided. It is provided so as to slide along 4 and hit the dowel 6 in the injection section 1.

A guide groove 10 is provided at the center of the tip of the driver 3.
Is formed with an opening. The guide groove 10 receives the upper half of the nail shaft of the dowel 6, and is formed so that about half of the dowel 6 can be swallowed. Further, the opening of the guide groove 10 is widened, the groove width is narrowed at the innermost portion of the guide groove 10, and striking portions 11 for the tips of the dowels 6 are formed on both sides. This striking part 11 is a slope part 1 following the tip part 8 of a dowel 6 introduced into the guide groove 10.
It is formed so as to engage with 0. An escape portion 12 of the tip 8 of the dowel 6 is formed in the middle of the striking portion 11.

According to the nailing machine having the above structure, the dowel 6 loaded in the magazine 5 is pushed forward by the pusher 7, the foremost dowel 6 is pushed out to the injection section 1, and a part thereof is ejected. While entering the guide recess 4 of the front wall 1a of the part 1, the other part is introduced into the guide groove 10 of the driver 3 at the top dead center. In this state, when the tip of the injection part 1 is brought into contact with the material to be driven and the striking mechanism of the nail driving machine is driven, the driver 3 is driven downward, so that the striking part 11 of the dowel 6 in the guide groove 10 is in the middle thereof. Slope 1 following upper tip 8
Since it strongly engages with 0 and hits, the dowel 6
Is ejected from the injection unit 1. At this time, the front part of the dowel 6 is guided to the guide recess 4, the side part is guided to the inner surface of the guide groove 10 of the driver 3, and the rear part is guided to the subsequent dowel 6, so that the dowel 6 bends in the middle. Without being ejected, it is ejected in the axial direction of the injection part 1 and is favorably driven into the material to be driven. The driving depth is determined by the position of the tip of the driver 3, but the dowel 6 has its lower half substantially immersed in the driven material 12.

By forming the inner shape of the magazine 5 as shown in FIG. 5, the dowels 6 and the staples 13 can be selectively loaded, and the tip end surface of the driver 3 having the above-mentioned structure is formed by the staples 13. Since it is also possible to drive, the staple or dowel nail 6 can be automatically driven according to the loaded nail without a special switching mechanism.

Further, the dowels are not limited to those formed by press molding as described above. It may have a round bar shape. Also in this case, as shown in FIG. 6, by forming the guide groove 10 and the striking portion 11 in the driver 3, the dowel 6 can be driven.

[0015]

According to the present invention, it is the striking portion of the driver that strikes the dowel, and the striking portion is provided so as to engage with the sloped portion that follows the tip of the dowel. Since it hits the slope and does not hit the tip, the tip does not collapse even if a dowel is driven in. Therefore, even when the protruding side of the dowel is driven into another member, it can be driven smoothly and reliably.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a nailing machine according to the present invention.

FIG. 2 is a cross-sectional view taken along line XX of FIG.

FIG. 3 is a sectional view taken along the line YY of FIG. 1;

FIG. 4 is an explanatory view of a driving manner of a dowel.

FIG. 5 is a cross-sectional view of another example of the magazine.

FIG. 6 is a cross-sectional view of a main part of a nailing machine as an example of hitting a dowel with a round rod shape.

FIG. 7 is an explanatory view of a usage state of a dowel.

[Explanation of symbols]

 1 injection part 3 driver 6 dowel 8 tip part 10 guide groove 11 striking part

Claims (1)

[Claims] 1. A nailing machine comprising an injection section for ejecting a nail and a driver for ejecting a nail supplied to the injection section, wherein an upper half portion of a nail shaft portion of a dowel is provided at a central portion of the tip of the driver. A nailing machine, characterized in that a guide groove for receiving is formed in an opening, and a striking portion which engages with a sloped portion following a sharp tip of a dowel received therein is formed in the guide groove.