JP2002283249A - Linked nail supply mechanism in nailing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a linked nail supply mechanism capable of effectively preventing scattering of a wire cut piece 14a, and capable of smoothly supplying and driving a thermoplastic resin sheet linked nail in a nailing machine usable by loading a wire linked nail and the thermoplastic resin sheet linked nail in common. SOLUTION: An opening reaching the inside of a shooting port 3 is formed in a nose part 1. An engaging member 12 forming a recessed part 13 capable of housing a linking wire end part of the wire linked nail a is rotatably formed in the nose part 1 so as to advance into the shooting port 3 via the opening. The cutting piece 14a of the nail driven by engaging the wire cut piece 14a formed on a nail shaft arranged in the shooting port 3 with a bottom part 17 of the recessed part 13, is molded upward. An upper part of the engaging member 12 forms an inclined guiding surface 15 for retreating the engaging member 12 from the inside of the shooting port 3 of the nose part 1 by engaging with a nail head part or a driver 4 for moving in the nose part 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sequentially injects both types of connecting nails, a connecting nail connected to each other by a metal wire and a plastic sheet connecting nail holding and connecting a nail shaft to holding pieces bent and formed on both sides of a plastic sheet. The present invention relates to a nail driving machine for driving nails supplied to an injection section and using a power of compressed air or the like to cut nails supplied to an injection section while breaking their connection.

[0002]

2. Description of the Related Art As a connecting nail used in a nailing machine driven by compressed air pressure or the like, a wire connecting nail formed by welding a metal wire to a nail shaft and a long plastic sheet are bent at both longitudinal sides. There is known a plastic sheet connecting nail in which a possible holding piece is integrally formed and connected by inserting a nail shaft through the holding piece. Both types of connecting nails are properly used depending on the construction site, and a nailing machine that can use both types of connecting nails has already been developed.

FIG. 6 shows a nail injection section of a conventionally known nailing machine using both types of connecting nails. In the nose portion 1 attached below the nailing machine body, an injection port 3 for slidingly guiding a driver 4 driven by a cylinder / piston mechanism arranged inside the body is formed. An opening for introducing the foremost nail a1 of the connecting nail into the injection port 3 is formed, and a fixed guide wall 5 for guiding the connecting nail a to the injection port 3 continuously with one side edge of this opening is integrated. Is formed. A door member 6 (see FIG. 7) is provided opposite to the fixed guide wall 5 so as to be openable and closable with respect to the nose portion, and the fixed guide wall 3 and the door member 6 are provided.
Is formed as a nail supply path 7 for guiding the connecting nail. The door member 6 has a pressing plate 1 elastically biased in a direction toward the fixed guide wall 5.
The press plate 18 maintains the interval between the wire connecting nail supply paths 7 and presses the plastic sheet connecting nail b against the fixed guide wall 5 as shown in FIG. The nail supply path 7 is arranged on a line extending from the center line of the injection port 3 in order to arrange each of the connecting nails a and b at the center of the injection port 3.

[0004] When the wire connecting nail a is used, when the leading nail is hit by the driver 4, the connecting wire 14 is cut between the leading nail and the second nail, and the connected state is disengaged. The first nail is driven out of the injection port 3. At this time, the cutting piece 14 of the connecting wire is attached to the front side of the second nail shaft.
a is formed and the cut piece 14a is usually formed in the direction of the point of the nail as shown in FIG. 6, so that the probability of entry into the material to be driven along the nail axis to be driven is obtained. Lower. In this case, when the nail is driven,
Rarely occurs when the end of the rod contacts the surface of the material to be driven, curves, separates from the nail shaft from the welded portion with the nail shaft, and scatters around. In order to prevent the cutting pieces 14a from scattering, the wire cutting pieces 14a are formed in the injection port 3 of the nose portion so that the cutting pieces 14a attached to the nail shaft to be driven are formed upward.
A recess 16 is formed for accommodating the front portion of the slab.

[0005]

In the prior art described above, the leading nail of the connecting nail is supplied so as to be disposed substantially at the center of the injection port 3 of the nose portion. Further, since the concave portion 13 for accommodating the front portion of the wire cutting piece 14a is formed on the front side of the injection port 3, the length of the cutting piece 14a formed in front of the nail shaft with a connecting nail having a narrow connection interval is reduced. When the length of the wire cutting piece 14a becomes shorter or the shape of the wire cutting piece 14a becomes unstable, it may be understood that the wire tip may not reach the recess 13 at the tip of the wire cutting piece 14a and the wire tip may not be accommodated in the recess 13. Was. In a nailing machine that uses a wire connecting nail exclusively, a concave portion 1 formed in the injection port 3 in order to solve the above-mentioned problem and ensure the engagement between the cut piece 14a and the concave portion 13
3 is formed on the side surface in the supply direction, and the supply position of the nail is offset and supplied in the direction in which the concave portion 13 is formed, so that even the cut piece 14a formed short can be reliably accommodated in the concave portion 13. A technique for reliably preventing the cutting pieces 14a from scattering has already been proposed.

When the above technique is applied to a nailing machine that can use both types, when the plastic connecting nail b is used as shown in FIG. 8, the shoulder 2 of the connecting band 20 of the plastic connecting nail is used.
Since 0a is arranged close to the center of the injection port 3, the driver 4 hits the shoulder portion 20a of the connecting band 20 (the connecting portion between the connecting band main body and the nail holding tab) when hitting the nail, As a result, the connecting band 20a is crushed and clogged in the injection opening 3 to cause clogging of the nail or a driving obstacle, and the plastic sheet connecting nail b
It was found that the above configuration could not be adopted because the supply of chromium was hindered.

[0007] The present invention relates to a nailing machine which can be used by loading the above-mentioned wire connection nail and plastic sheet connection nail together.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a connecting nail supply mechanism in a nailing machine capable of effectively preventing scattering of wire cutting pieces and also supplying and driving a plastic sheet connecting nail without any trouble.

[0008]

In order to solve the above-mentioned problems, a connecting nail supply mechanism in a nailing machine according to the present invention comprises a wire connecting nail formed by welding a metal wire to a nail shaft and connecting the wire connecting nail to a long plastic. In a nailing machine in which a nail shaft is inserted into and held by a holding piece formed along the longitudinal direction of the sheet and connected together with a plastic sheet connecting nail, which can be supplied into the nail outlet of the nose, the nail reaches the outlet of the nose. An opening is formed, and an engaging member formed with a concave portion capable of accommodating the connecting wire end of the wire connecting nail so as to advance into the injection port through the opening is rotatably formed in the nose portion, and is formed in the injection port. A wire cutting piece formed on the arranged nail shaft is engaged with a shoulder of the concave portion so that a cutting piece of a nail to be driven is formed upward, and an upper part of the engaging member has a nose part inside. Moving the nail head or Engage the driver and is characterized in that the formation of the inclined guide surface is retracted moving the engagement member from the exit mouth of the nose portion.

[0009]

Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. In FIG. 1, reference numeral 1 denotes a nose portion of a nailing machine according to an embodiment of the present invention. The nose portion 1 is attached to a lower end portion of a housing 2 and has a hollow injection port 3 for driving out a nail. Has formed. A driver 4 integrally mounted on a piston which is driven by compressed air in a cylinder provided in the housing 2 is slidably guided in the injection port 3 and is disposed in the injection port 3 by the driver 4. The nail is driven out of the tip of the injection port 3 into the material to be driven. An opening is formed on one side surface of the injection opening 3 for receiving a connected nail into the injection opening 3, and a fixed guide wall 5 extending rearward continuously to one side surface of the opening, and a fixed guide. A nail supply path 7 for guiding the connecting nail to the injection port 3 is formed by a door member 6 (see FIG. 2) pivotally supported on the side facing the wall 5 so as to be openable and closable.

The door member 6 is provided with a pressing plate 18 which is elastically urged in a direction toward the fixed guide wall 5, and the pressing plate 18 maintains the interval between the nail supply paths 7 for the wire connecting nails. At the same time, the plastic sheet connecting nail is pressed against the fixed guide wall 5.

On the back side of the fixed guide wall 5, a nail feeding mechanism 8 composed of a feed piston and a piston / cylinder mechanism accommodating the feed piston is arranged. The feed piston is slidable along the nail supply path 7, and a nail feed claw 10 is attached to the tip of the piston rod 9. The tip of the nail feed claw 10 has advanced to the nail supply path 7 through the window hole 11 formed in the fixed guide wall 5 and reciprocates along the nail supply path 7. The reciprocating operation of the nail feed claw 10 causes the connecting nail a in the nail supply path 7 to be sequentially supplied into the injection port 3 by engaging with the shaft. The fixed guide wall 5 is provided with a check claw that can advance into the nail supply path 7 to prevent the connecting nail a from moving backward when the nail feed claw 10 is moved backward.

An opening is formed on the outer surface of the nose portion 1 so as to penetrate the nose portion 1 and reach the inside of the injection port 3. The upper end of the nose portion 1 is supported by the nose portion 1. The member 12 is provided rotatably. This engagement member 1
2, a recess 13 is formed on the lower end side for accommodating the wire cutting piece 14a, and a bottom portion 17 is formed below the recess 13 to engage with the wire cutting piece 14a. Further, a guide inclined surface 15 which can be engaged with the nail head or the driver 4 moving in the injection opening 3 is formed in an upper portion of the engaging member 12, and the concave portion 13 and the guide inclined surface 15 are separated from the opening. It is formed so as to be able to enter the injection port 3. The engaging member 12 is urged by a resilient means such as a spring (not shown) in a direction in which the recess 13 and the guide inclined surface 15 always enter the injection port 3.

The window hole 11 formed in the nose portion 1 is formed so as to be offset at an angle from the nail shaft to the side where the connecting wire is welded.
The wire cutting piece 14 a formed on the nail shaft arranged in the injection port 3 is easily accommodated in the recess 13. A plurality of engaging members 12 are provided corresponding to the welded portions of the connecting wires of the wire connecting nails a, and each engaging member 12 is formed with a concave portion 13 and a guide inclined surface 15.

As another technique, it is possible to form a plurality of recesses in one engaging member and accommodate the connecting wires welded at different positions in the respective recesses.

The nail shaft a1 supplied at substantially the center of the injection port 3
Abuts on the engaging member 12 that has advanced into the injection port 3,
A wire cutting piece 14a formed in front of the nail shaft is housed in a recess 13 formed in the engaging member 12 (see FIG. 1). When the nail is hit by the driving of the driver 4 and moves downward in the injection port 3, the wire cutting piece 14 a is attached to the bottom 17 formed on the lower side of the concave portion 13 of each engaging member 12.
And the end is turned upward with the movement of the nail (see FIG. 3). Thereafter, the nail head hit by the driver 4 comes into contact with the guide inclined surface 15 of the engaging member 12, and the engaging member 12 is rotated by the inclined surface 15,
The recess 13 and the guide inclined surface 15 are retracted outward from the injection port 3 (see FIG. 4). As a result, the driver 4 can further drive the nail downward. The nail head (or driver 4) further contacts the guide inclined surface 15 of the engaging member 12 below the nose portion 1 and rotates it to put the nail into the ejection port 3.
(See FIG. 5). Also when using a plastic sheet connecting nail, the engaging member 12 abuts on the nail shaft in the injection port 3 and is retracted from the injection port 3 by driving the nail.

As described above, according to the connecting nail supply mechanism of the nailing machine, even if the nail supply path 7 is not offset with respect to the injection port 3, the wire cutting piece 14a of the connecting wire 14 can be removed. Since the accommodating recess 13 is made to advance into the injection opening 3, the wire cutting piece 14 a formed on the wire connecting nail a can be securely accommodated in the recess 13, and the nail is driven out by the driver 4. In this case, the bottom portion 17 formed at the lower portion of the concave portion 13 is engaged with the wire cutting piece 14a so that the wire cutting piece 14a can be reliably formed upward and the scattering of the wire cutting piece 14a can be prevented with a high probability.

Further, at the time of hitting, the nail head hit by the driver 4 hits the guide inclined surface 15 of the engaging member 12 and retreats the engaging member 12 from the inside of the injection port 3 of the nose portion 1. The member 12 does not hinder the hitting.

Further, since it is not necessary to supply the connecting nails offset, the plastic sheet connecting nails can be supplied without any trouble.
And can be driven.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of a nose portion with a wire connecting nail according to an embodiment of the present invention loaded therein.

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

FIG. 3 is the same cross-sectional view as FIG. 1 in a state where a nail in an injection port is hit by a driver.

FIG. 4 is the same cross-sectional view as FIG. 1 in a state where the nail hitting is in progress.

FIG. 5 is the same cross-sectional view as FIG. 1 in a state where the nail is further struck.

FIG. 6 is a longitudinal sectional side view showing a nose portion of a conventional nailing machine.

FIG. 7 is a cross-sectional bottom view showing a state where a wire connection nail is loaded.

FIG. 8 is a cross-sectional bottom view showing a state where a plastic sheet connecting nail is loaded.

[Explanation of symbols]

 a Connecting Nail 1 Nose 3 Injection Port 12 Engaging Member 16 Concave 15 Guide Slope 14 Wire Cut Piece

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3C068 AA01 AA08 BB01 CC02 EE06 EE08

Claims (1)

[Claims] 1. A wire connecting nail connected by welding a metal wire to a nail shaft, and a plastic sheet connecting nail connected by inserting and holding a nail shaft through a holding piece formed along the longitudinal direction of a long plastic sheet. A nailing machine capable of supplying both into the nail outlet of the nose part, wherein an opening reaching the inside of the outlet is formed in the nose part, and the connecting wire end of the wire connecting nail is advanced into the outlet through the opening. An engaging member having a concave portion capable of accommodating the portion is rotatably formed in the nose portion, and a wire cutting piece formed on a nail shaft arranged in the injection port is engaged with a shoulder portion of the concave portion. The cut piece of the nail to be driven is formed upwardly, and the upper part of the engaging member is engaged with a nail head or a driver moving in the nose part, so that the engaging member is in the ejection opening of the nose part. Induced tilt to retreat from Connected nails supply mechanism in the nailing machine, characterized in that the formation of the.