JP2002018742A - Nailing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nailing machine capable of stably hamming a nail in an aimed position on a nailing material. SOLUTION: In this nailing machine wherein the tip end part of a contact arm 9 is slidably mounted on the tip end part of a driver guide 5 in a shaft direction, a nail guide surface constituted by a tapered surface 9d for guiding the nail 15 hammered by a driver is formed on the contact arm 9. A tapered angle is set so that a convergence point P on an extension of the tapered surface 9d agrees with an intersection of an axis of the contact arm 9 and an abutment end face of the contact arm 9 to the nailing material W.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nail driving machine, and more particularly to a technique for guiding a nail driven by a driver.

[0002]

2. Description of the Related Art In general, a nailing driver is provided at a tip end of a body of a nailing machine with a driver guide for guiding a nail driven by the driver. At the tip of the driver guide, a contact arm that is spring-biased so as to protrude further from the tip of the driver guide is arranged, and this contact arm is pressed against the material to be driven at the time of nail driving, and retreats. The configuration is such that the trigger operation is valid. Such a nailing machine is described in, for example, Japanese Utility Model Application Laid-Open No. 56-6303.

[0003]

The inner diameter of the driver guide is set corresponding to the outer diameter of the nail head, and a space is created between the nail shaft and the inner peripheral surface of the driver guide. Therefore, the nail may be inclined in the driver guide, particularly when the tip of the contact arm disposed at the tip of the driver guide is formed in a cylindrical shape that is slidably fitted on the outer periphery of the driver guide. Since the inner diameter is larger than the inner diameter of the driver guide, the inclination of the nail becomes larger. As a result, there is a problem that the driving position of the nail with respect to the nail driving material is not stable, the driving position varies, and the finish becomes uneven.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to enable a nail to be stably driven into a nailing material at a target position. An object of the present invention is to provide a nailing machine.

[0005]

In order to achieve the above-mentioned object, a nailing machine according to the present invention has a configuration as described in each claim. Therefore, according to the first to third aspects of the present invention, at the time of nail driving, the nail can be guided toward one point of the nail driving material by the guide surface set in the nail driving section. For this reason, it is possible to stably drive the nail into the nail driving material at a target position.

According to the second aspect of the present invention, in a nailing machine having a contact arm, a nail can be stably driven. According to the third aspect of the present invention, it is possible to stably drive a nail in a nailing machine provided with an adapter.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. The nailing machine 1 according to the present embodiment
As shown in FIG. 1, there is provided a main body unit 3 having a driver (not shown) for reciprocating and driving a nail by air pressure.
A cylindrical driver guide 5 for guiding a driver and a nail driven by the driver is linearly extended in the main body 3. A roll-shaped nail accommodated in a magazine 13 is provided with a nail feed mechanism 11. , And is fed into the driver guide 5 at a predetermined pitch.

Further, a contact arm 9 which is biased by spring so as to protrude further from the distal end of the driver guide 5 is arranged at the distal end of the driver guide 5, and this contact arm 9 is used for nail driving. When the nail 7 is pressed against the nail driving surface of the nail driving member, the trigger 7 is activated by being retracted by being pushed by the nail driving member, that is, being moved to the pushing position.

FIGS. 2 and 3 show a first embodiment according to the present invention, and are longitudinal sectional views showing the structure of a nailing tip portion, which is abutted against a nailing material W, that is, a nailing portion. . In the first embodiment, the nail driving portion of the present invention is constituted by two members, the driver guide 5 and the contact arm 9, and at least the distal end of the driver guide 5 has a cylindrical shape as shown in the drawing. And has a parallel cylindrical hole 5a.

On the other hand, the distal end side of the contact arm 9 is formed in a cylindrical shape, and is fitted to the outer periphery of the distal end portion of the driver guide 5 so as to be slidable in the axial direction. The contact arm 9
It has a tapered portion 9b tapering from the fitting portion 9a fitted to the driver guide 5 toward the distal end, and further has a parallel cylindrical hole at the distal end of the tapered portion 9b having the same inner diameter as the inner diameter of the cylindrical hole 5a of the driver guide 5. The structure has a top portion 9c.

A tapered surface 9d constituting a guide surface of the nail 15 is formed between the inner peripheral surface of the cylindrical hole of the fitting portion 9a and the inner peripheral surface of the cylindrical hole of the top portion 9c. , The tapered surface 9d is a conical surface. Then, the vertex of the conical surface, that is, the convergence point P on the extension of the surface of the tapered surface 9d, is determined by the contact of the nail hole driving member W with the axis of the cylindrical hole of the driver guide 5 (accordingly, the axis of the contact arm 9). The taper angle of the tapered surface 9d is set so as to coincide with the intersection with the contact end surface.

The nailing machine 1 according to the present embodiment is configured as described above. Therefore, when the distal end face of the contact arm 9 is pressed against the nailing material W and pressed down,
Since the contact arm 9 retreats to the pushing position,
When the trigger 7 is pulled in this state, the driver penetrates the driver guide 5 and strikes the nail 15 by stroke until the tip slightly protrudes from the tip of the contact arm 9.

At this time, the driving direction of the nail 15 with respect to the nail driving material W is guided by the tapered surface 9d set on the contact arm. That is, the nail 15 is shown in FIG.
As shown in (2), when the driver guide 5 is driven in a state inclined with respect to the axis of the driver guide 5, its tip is guided along the tapered surface 9d, and the direction is corrected. That is, as described above, the tapered surface 9d has the convergence point P on the extension of the surface.
However, since the nail 15 is set at one point with respect to the driving surface of the nail driving material W, the nail 15 is guided such that its tip is directed to the convergence point P.

As described above, according to the nailing according to the present embodiment, the nail 15 can be always guided to the fixed position of the nailing material W by the tapered surface 9d. 15 can be stably driven into the target position. As a result, it is possible to obtain a good finished state without variation in the driving position of the nail 15. By the way, in the case of a conventional nailing machine, a nail 1
When 5 is driven into a position shifted from the target position,
Since the position of the driver is displaced with respect to the head of the nail 15, as a result, the driver hits the surface of the driving material, and the driving trace of the driver remains. However, according to the present embodiment, when the nail 15 is driven, the head of the nail 15 coincides with the convergence point P as long as the nail is not bent. Since it descends toward the convergence point P, it is possible to prevent the driver from hitting the surface of the nail driving material W.

In this embodiment, since the outer diameter of the top portion 9c of the contact arm 9 is formed smaller than the outer diameter of the fitting portion 9a, it is easy to aim the nail 15 at the nailing position. Yes, nail 1 against nail driving material W
The uniformity of the finished state can be obtained in combination with the function of guiding the position 5 to a target position.

Next, a second embodiment of the present invention will be described with reference to FIGS. The present embodiment is directed to a nailing machine having an adapter 10 for preventing damage to a material at the distal end of a contact arm 9 as a foremost member to be mounted on a nail driving portion. The taper surface 10d for guiding the nail is set on the adapter 10 for preventing sticking. Therefore, in this embodiment, the nail driving portion of the present invention is constituted by the three members of the driver guide 5, the contact arm 9, and the adapter 10. As shown
In this embodiment, the tip of the contact arm 9 is
The terminal ends at a parallel fitting portion 9a which is fitted to the distal end portion of the driver guide 5 so as to be slidable in the axial direction, and an adapter 10 is fitted around the outer periphery of the fitting portion 9a.

The adapter 10 has a tapered portion 10b extending in a tapered shape from a fitting portion 10a fitted to the contact arm 9 toward the distal end, and further has an inner diameter of the cylindrical hole 5a of the driver guide 5 at the distal end of the tapered portion 10b. A top portion 10c having a parallel cylindrical hole having the same inner diameter is provided. And
The tapered surface 10d for nail guiding formed on the inner peripheral surface of the tapered portion 10b has a convergence point P on the extension of the surface.
The taper angle is set so as to coincide with the intersection of the axis of the driver guide 5 (accordingly, the axis of the adapter 10) and the contact surface of the adapter 10 with the nail driving member W.

Therefore, in the case of this embodiment as well, as shown in FIG. 5, even if the nail 15 is driven in a state inclined with respect to the axis of the adapter 10, the tip of the nail 15 is formed by the tapered surface 10d. Since the guide can be guided toward the convergence point P, the driving direction of the nail 15 is corrected and the nail 15 is driven into the aimed position of the nail driving material W as in the case of the first embodiment described above. be able to.

In the present embodiment, when the tapered surfaces 9d and 10d for guiding the nails are set on the inner peripheral surfaces of the contact arm 9 and the adapter 10, the outer peripheral surfaces thereof are also formed of tapered surfaces, that is, the tapered surface. Parts 9b, 10
However, the outer peripheral surface may have a shape extending in parallel with the outer diameter of the fitting portions 9a and 10a over the entire length thereof. In the second embodiment, the adapter 10 is attached to the contact arm 9.
The present invention may be applied to a configuration in which the adapter 10 is directly attached to the driver guide 5, that is, a nailing machine having no contact arm 9. Further, although the distal end of the contact arm 9 and the adapter 10 are described as being cylindrical,
It is not necessarily limited to this, and may be a rectangular tube.

Further, as shown in FIG. 6, as a modification of the embodiment in which the guide surface of the nail 15 is provided in the nail driving portion, the driver guide 5 may be provided with a tapered surface 5b for guiding the nail. Also in this case, the convergence point P on the extension of the surface of the tapered surface 5b is equal to that of the above-described embodiment,
It is set so as to match the intersection of the contact end face of the contact arm 9 (or the adapter), which is abutted against the nailing material W at the time of nailing, and the axis of the driver guide 5. Even when such a configuration is employed, the same operation and effect as those of the above-described embodiment can be obtained.

[0021]

As described in detail above, according to the present invention,
The nail can be stably driven into the nail driving material at a target position, and a good nail driving state with no variation or a small finish can be obtained. Further, it is possible to prevent the driver from hitting the surface of the nail driving material.

[Brief description of the drawings]

FIG. 1 is a front view of a nailing machine.

FIG. 2 is a longitudinal sectional view showing a shape of a nail driving section according to the first embodiment.

FIG. 3 is a longitudinal sectional view showing the shape of the nail driving portion, showing a guide mode of the nail at the time of driving the nail.

FIG. 4 is a longitudinal sectional view illustrating a shape of a nail driving portion according to a second embodiment.

FIG. 5 is a longitudinal sectional view showing the shape of the nail driving portion, showing a guide mode of the nail at the time of driving the nail.

FIG. 6 is a longitudinal sectional view showing a case where a nail guide function is provided in a driver guide.

[Explanation of symbols]

 Reference Signs List 1 nailing machine 3 main body part 5 driver guide 7 trigger 9 contact arm 9a fitting part 9b taper part 9c top part 9d taper surface P convergence point W nailing material

Claims (3)

[Claims] 1. A nailing machine characterized in that a nail driving portion, which is brought into contact with a nail driving material, is provided with a nail guide surface for guiding a nail toward a point on the hitting surface of the nail driving material. 2. The nail driving machine according to claim 1, wherein said nail guide surface is slidably mounted on an outer periphery of a nail driving driver guide, and is moved to a pushing position to trigger. A nailing machine formed on a contact arm that makes the nail effective. 3. The nailing machine according to claim 1, wherein said nail guide surface is formed on an adapter provided as a leading end member in said nailing portion.