JP2000296476A - Linked nail feed mechanism in nailing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the dimensions of nailing machines by shortening the distance between their magazine and nose part. SOLUTION: The nailing machine comprises a magazine for storing linked nails 5, a nose part 4 for driving the leading nail of the linked nails 5 in the magazine, a feed passage 6 defined between the magazine and the nose part 4 to guide the linked nails 5, and a feed mechanism for feeding the linked nails 5 in the magazine to the nose part 4 along the feed passage 6. The feed mechanism consists of a feed piston-feed cylinder device 7 and a feed claw 8 disposed at the tip of the feed piston 7b. The feed piston-feed cylinder device 7 is disposed at an angle with the feed passage 6. The feed claw 8 is connected to the feed piston 7b for reciprocation along the feed passage 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting nail feeding mechanism for shortening a distance between a magazine for accommodating a connecting nail and a nose portion for driving a leading nail of the connecting nail in a nailing machine.

[0002]

2. Description of the Related Art Generally, a nail driving machine includes a magazine containing a connecting nail, a nose portion for slidably housing a driving driver, and a feed mechanism for feeding the connecting nail in the magazine to the nose along a feed path. After the leading nail of the connecting nail in the magazine is supplied to the nose portion by the feed mechanism, the driver for driving is driven to drive the leading nail in the nose portion toward the material to be driven. As shown in FIG. 6, a feed piston / cylinder device 21 is arranged along the feed passage 20, and a feed claw 22 rotatably attached to the tip of the feed piston / cylinder 21 is reciprocated together with the feed piston 21a. Connect the connecting nail 23 in the feed passage to the nose 24
It is configured to be sent to.

[0003] By the way, the nail driving machine is more compact when used as a whole, and can be used in a narrow place. Therefore, further miniaturization is required.

[0004]

However, as described above, since the feed passage 20 and the feed piston cylinder device 21 are arranged in parallel between the magazine and the nose portion, the magazine 25 and the nose The space between the part 24 was fixed. Further, when the magazine 25 is made small, the connecting nails are inevitably shortened, so that it is difficult to continuously drive a large number of nails.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a nailing machine which can be made compact by shortening the interval between a magazine and a nose portion.

[0006]

In order to solve the above-mentioned problems, a nailing machine according to the present invention comprises: a magazine accommodating a connecting nail; a nose portion for driving a first nail of the connecting nail in the magazine; And a feed mechanism for feeding the connecting nail in the magazine to the nose portion along the feed path, wherein the feed mechanism feeds the piston / cylinder. The feed piston / cylinder device is disposed obliquely with respect to the feed passage, and the feed claw is disposed in the feed passage with respect to the feed piston. It is connected so that it may reciprocate along.

[0007]

1 is a side view of a nailing machine, and FIG. 2 is a plan view of the nailing machine. In the figure, reference numeral 1 denotes a body of a nailing machine, 2 denotes a grip, 3 denotes a magazine, and 4 denotes a cylindrical nose portion.

A striking mechanism (not shown) is arranged in the body 1, and a rod-shaped striking driver a is arranged to slide on the nose portion 4. Then, as shown in FIG. 3, after the leading nail 5 a of the connecting nail 5 loaded in a coil shape in the magazine 3 is supplied to the nose part 4, the air formed on the body 1 passes through the inside of the grip 2. A striking mechanism is actuated by the compressed air in a chamber (not shown) to drive a striking driver a, which strikes the leading nail 5a in the nose portion 4 and strikes the nail toward the material to be struck. .

The connecting nail 5 in the magazine 3 is supplied to the nose portion 4 by a feed mechanism along a feed path 6. The feed passage 6 is provided between the magazine 3 and the nose portion 4. The feed mechanism includes a feed piston / cylinder device 7 and a feed claw 8 provided at a front portion thereof.

The feed piston / cylinder device 7 slidably accommodates a feed piston 7b in a feed cylinder 7a, and constantly urges the feed piston 7b forward (toward the nose portion 4) by a spring 9 to feed the feed piston 7b. The feed piston 7b is retracted against the spring 9 by supplying compressed air into the feed cylinder 7a.
Are formed integrally with a support 18 fixed outside the feed passage 6.

The feed piston / feed cylinder device 7 is arranged obliquely with respect to the feed passage 6. A guide rod 10 is disposed between the feed cylinder 7a and the feed passage 6 in parallel with the feed passage 6, and a slide member 11 shown in FIGS. The spring 12 is constantly urged forward. An inclined protruding piece 13 is formed at the front of the slide member 11, and a long guide hole 14 is formed on the protruding piece 13. A shaft 15 fixed to the tip of the feed piston 7b is engaged with the guide slot 14. A shaft pin 16 is fixed to a front end of the slide member 11, and a feed claw 8 is rotatably connected to the shaft pin 16.
As shown in FIG. 4, the shaft pin 16 is disposed so as to engage with a bent side wall 19 formed in the support 18 in parallel with the feed passage 6. The feed claw 8 is the feed piston 7
b is connected so as to reciprocate along the feed passage 6 and is always urged toward the feed passage 6 by a spring 17.

The angle α formed by the center line P of the guide slot 14 formed in the projecting piece 13 of the slide member 11 and the center line of the feed passage 6 is determined by the fact that the center line Q of the feed piston 7b is It is formed to be larger than the angle β formed with the center line. Therefore, as described later, the feed piston 7b
In order to move the slide member 11 by a predetermined stroke (a distance required to feed one nail) when the slide member 11 is moved by the movement of the movement, the movement amount of the feed piston 7b becomes larger than that. The spring force of the spring 9 is set to be smaller than the spring force of the spring 9 and acts in an auxiliary manner. In some cases, the spring 12 is not used and the slide member 11 is moved only by the spring force of the spring 9. It can also be activated.

In the above configuration, the operation of the feed mechanism after the leading nail 5a is driven will be described. First, compressed air is supplied to the feed cylinder 7a. This causes the feed piston 7b to retreat against the spring force of the spring 9, as shown in FIG. At this time, the shaft 15 at the tip of the feed piston 7b
Moves along the guide slot 14 of the slide member 11, but since the angle α is larger than the angle β, the slide member 11 also
Along the feed path 6 in parallel. For this reason, the feed claw 8 retreats to the second nail 5b from the top while rotating around the shaft pin 16 against the spring 17. Thereafter, when the compressed air is exhausted, the feed piston 7b moves forward by the spring force of the spring 9. Along with this,
The slide member 11 also advances forward along the feed passage 6 by the spring force of the spring 12. At this time, the feed claw 8 engages with the second nail 5b from the top, sends out the connecting nail 5 by one nail, and supplies the next front nail 5a to the nose portion 4. When the slide member 11 moves, the shaft pin 16 is arranged so as to engage with the bent side wall 19, so that the slide member 11 moves smoothly and the center of the swing of the feed claw 8 is stabilized. I do.

As described above, since the feed piston / cylinder device 7 is arranged obliquely with respect to the feed passage 6, the feed passage L1 in the conventional feed mechanism shown in FIG.
The length L2 of the feed passage 6 is shortened to reduce the distance between the magazine 3 and the nose portion 4 to make it more compact than a conventional nailing machine. You can get the machine.

A slide member 11 that slides along the feed passage 6 is disposed between the feed piston 7b and the feed claw 8, and the slide member 11 causes the feed piston 7b to slide.
Is changed to the direction along the feed passage 6, so that the feed claw 8 does not move away from or approach the feed passage 6 when moving, and the nail can be fed stably.

[Brief description of the drawings]

FIG. 1 is a side view of a nailing machine according to the present invention.

FIG. 2 is a bottom view of the nailing machine.

FIG. 3 is a cross-sectional view of a main part taken along line XX of FIG. 1;

FIG. 4 is a sectional view taken along line YY of FIG. 3;

FIG. 5 is an explanatory view of an operation mode of a feed mechanism for a connecting nail.

FIG. 6 is a cross-sectional view of a main part of a conventional feed mechanism.

[Explanation of symbols]

 3 Magazine 4 Nose 5 Connecting Nail 6 Feed Path 7 Feed Piston / Cylinder Device 8 Feed Claw

Claims (1)

[Claims] 1. A magazine accommodating a connecting nail, a nose portion for driving a leading nail of the connecting nail in the magazine, a feed passage for the connecting nail disposed between the magazine and the nose portion, and a connection in the magazine. A nailing machine having a feed mechanism for feeding a nail to a nose portion along a feed path, wherein the feed mechanism comprises a feed piston / cylinder device and a feed claw provided at a tip of the feed piston; A connecting nail in a nailing machine, wherein a cylinder device is disposed obliquely with respect to the feed passage, and the feed claw is connected to the feed piston so as to reciprocate along the feed passage. Feed mechanism.