JP2012171030A - Cutting mechanism of connection band residual part in nailing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily cut a connection band residual part 2a of connected nails, to correct a bending peculiarity of the connection band residual part 2a, and to properly keep the attitude of the connected nails in cutting it.SOLUTION: A claw 8 is projected adjacently to an outlet 6 adjacent to a nose part 5, and the position of a tip 8a of the claw is located at a hole edge of a feed hole 1 of a connection band. In addition, when a discharged connection band residual part 2a is drawn toward the claw 8, the feed hole 1 thereof is fitted to the claw 8.

Description

  The present invention attaches a connecting nail in which a large number of nails are arranged in parallel to a tape-like connecting band in a magazine of a nailing machine, and supplies the connecting nail to a nose in order to connect the most advanced nail. The present invention relates to a cutting mechanism for the remaining part of the connection band which is driven away from the band and driven out and the remaining part of the connection band is discharged from the nailing machine.

The connecting nails in which the nails are arranged in parallel are wound in a coil shape so as to be loaded into the magazine of the nailing machine. For this reason, the remaining part of the connecting band after the nail is driven has curl and gradually entangles with the outer periphery of the nose case of the nail driver. Then, since the nailing operation is hindered, if the remaining length of the connecting band exceeds a certain length, it is necessary to tear it off and remove it. The connecting band is cut at the position of the feed holes because a number of feed holes for feeding the frames are arranged at regular intervals.
Next, in all of the connection band cutting devices described in the following patent documents, a cutting cutter is disposed adjacent to the discharge port, and the lever connected to the cutter is rotated to cut the remaining connection band. Is.

Japanese Examined Patent Publication No. 62-019994 JP 2002-127040 A

When tearing off the connection band remaining part of the connection nail, the tensile force at that time may reach the remaining nail part, which may change the position of the nail. In particular, when the number of remaining nails is less than or equal to a few, there is a possibility that the nail will be greatly changed in posture, and that the nail will be clogged in the nose when nailing.
Even when a cutter is provided at the discharge port of the remaining part of the connection band and the lever is cut by a lever as in the nailing machine of the above-mentioned patent document, external force affects the connection band when the cutter is cut. There is a risk of changing the position of the nail. Furthermore, the presence of the cutter and its lever itself may interfere with the nailing operation and the like. Moreover, since the coil-shaped winding hook exists in the connection band remainder part, it is necessary to operate a cutter frequently.
Accordingly, an object of the present invention is to solve such problems.

The present invention according to claim 1 uses a connecting band (2) in which a number of feed holes (1) for frame feeding are spaced apart in the longitudinal direction and arranged at regular intervals. A number of nails (3) are connected in parallel, wound in a coil and loaded into the magazine (4), and the parallel nails (3) are sequentially supplied to the nose (5) (5) The nail (3) supplied into the nail (3) is driven away from the connection band (2) and driven, and the remaining part of the connection band (2a) after the nail (3) is driven is discharged adjacent to the nose (5). A nailing machine (7) adapted to discharge from the outlet (6), in the cutting mechanism of the remaining connection band (2a) in the nailing machine (7),
A claw (8) protrudes from the edge of the discharge port (6) and adjacent to the position where the feed hole (1) of the connection band remaining portion (2a) passes,
The claw (8) is located in the feed hole (1) adjacent to the outlet of the discharge port of the remaining connection band (2a) when the position of the claw tip (8a) is in use by the nailer (7). It is located slightly downstream of the downstream hole edge (1a), and when the discharged connection band remaining part (2a) is pulled toward the claw (8) side, due to elastic deformation of the connection band (2) and play of its feed The cutting mechanism for the remaining portion of the connection band in the nailing machine, wherein the feed hole (1) is configured to fit into the claw (8).

According to a second aspect of the present invention, there is provided a cutting mechanism for the remaining connecting band in the nailing machine (7) according to the first aspect,
The claw (8) is disposed obliquely toward the outside of the discharge port and obliquely to the center side in the width direction of the discharge port (6) of the connection band remaining portion (2a) and discharged from the discharge port (6). When the claw (8) comes into contact with the connection band remaining part (2a) at a position adjacent to the discharge port (6) of the connected band remaining part (2a), This is a cutting mechanism for the remaining part of the connecting band in the nailing machine in which the remaining part (2a) of the connecting band is guided.

According to a third aspect of the present invention, there is provided a cutting mechanism for the remaining connection band in the nailing machine according to the first or second aspect,
The claw (8) is a cutting mechanism for the remaining portion of the connection band in the nailing machine in which a blade (8b) is formed on the side in the width direction.

According to a fourth aspect of the present invention, there is provided a cutting mechanism for the remaining connecting band in the nailing machine according to the third aspect,
The width of the claw tip (8a) of the claw (8) is smaller than the length in the width direction of the feed hole (1), and the width of the base of the claw (8) is larger than the length in the width direction of the feed hole (1). It is a cutting mechanism of the remaining connecting band in a nailing machine which is large.

The cutting mechanism of the connection band remaining portion in the nailing machine of the present invention has a claw 8 projecting adjacent to the edge of the discharge port 6 adjacent to the nose 5, and the position of the claw tip 8a is the feed hole of the connection band remaining portion 2a. Since it is located slightly downstream of 1, the presence of the claw 8 does not affect the discharge of the remaining connecting band 2 a.
At the same time, when the discharged connecting band remaining portion 2a is drawn to the claw 8 side, the feed hole 1 is inserted into the claw 8 due to elastic deformation of the connecting band 2, so that the connecting band 2 is pulled strongly. Thus, the remaining connecting band 2a can be easily removed from the feed hole 1 adjacent to the outlet of the discharge port. The insertion of the claw 8 can easily remove only the remaining connecting band 2a without affecting the remaining parallel nails 3. That is, since the claw 8 is fitted in the feed hole 1 and the connecting band remaining portion 2a is torn off with respect to the feed hole 1, the applied external force may exert a force upstream of the feed hole 1 at that time. Absent.

In the above configuration, as described in claim 2, when the claw 8 comes into contact with the connecting band remaining portion 2a and guides the nail 3 in the direction of correcting the curl of the nail 3, the connecting band remaining portion 2a is used as a nail driver. It is possible to prevent tangling the nose case 5a in which the nose 5 is installed as much as possible, and to provide a nailing machine with good workability. That is, since the connecting band 2 is wound like a conventional nailer, it is possible to prevent the remaining of the connecting band 2a from clinging to the outer periphery of the nose case 5a as much as possible.
In the above configuration, as described in claim 3, when the blade 8b is formed on the side portion of the claw 8, the remaining connecting band portion 2a can be more easily cut.
In the above configuration, as described in claim 4, the width of the claw tip 8a of the claw 8 is made smaller than the length in the width direction of the feed hole 1, and the width of the base of the claw 8 is made larger than the length in the width direction of the feed hole 1. In this case, the hole edge portion of the feed hole 1 can be easily cut along with the operation of fitting the feed hole 1 of the remaining connecting band 2a into the claw 8. Thereby, it is possible to provide an easy-to-use connecting body cutting mechanism.

The front view of the nailing machine which has the cutting mechanism of this invention. The left side schematic view. The principal part front view. The main part left view. AA arrow sectional drawing in FIG. The top view of the nail | claw 8 for a cutting | disconnection in the same mechanism. BB arrow line view. CC arrow view. (A) shows the principal part in FIG. 5, and shows the state where the connection band 2 does not exist. (B) is a BB arrow line view of (A). (C) is a CC arrow view of (A). (D) is a top view of the connection band remaining part 2a. Explanatory drawing when cut | disconnecting the connection band remaining part 2a of the mechanism. (A) is a plan view of the connecting band 2, (B) and (C) are a front view and a side view in which the nails 3 are arranged in parallel, and (D) and (E) are development views of the connecting band 2, and a side view thereof. The top view of the other connection belt | band | zone 2, a side view, the front view which has the nail | claw 3, and the side view of the connection belt | band | zone 2. The principal part front view of the other example of this invention. The left side view.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a nailing machine having a cutting mechanism of the present invention. FIG. 2 is a left side view thereof. This nail driver is different from the conventional one only in the claw 8 and its peripheral portion.

  In the nailing machine of this example, a nose case 5a having a nose 5 is provided at one end of a nailing machine 7, and a nail feeder 12 and a magazine 4 are connected to the nose case 5a. The magazine 4 is loaded with a connection nail in which a large number of nails 3 are connected in parallel to the connection band 2 in a coil shape. For example, as shown in FIGS. 9D and 10E or FIGS. 10A and 10B, this connecting nail has a large number of feeding holes 1 spaced apart in the longitudinal direction, and is spaced at regular intervals. And a tongue piece 1c projecting from both sides via a crease 1b, and a nail holding portion 1a formed in a Ω shape at the tip thereof. Each tongue piece 1c is bent in a U shape via a folding line 1b, and a nail 3 is placed between each nail holding portion 1a of the pair of tongue pieces 1c as shown in FIGS. 9 (B) (C) and 10 (C). It is held as shown in (E).

  Coiled connection nails are housed in the magazine 4, and the end of the connection band 2 is guided to the nose 5. Further, one end of an air hose (not shown) is connected to the nailing machine 7, and the other end is connected to a compressed air source such as an air compressor. Each time the trigger 9 of the nailing machine 7 is pulled, the feed claw 11 provided in the nail feeder 12 moves the connecting band 2 one by one through the feed hole 1 by the reciprocating motion of the feed piston. In addition, the driver 13 is moved in and out of the nose 5 of FIG. 7, and the head of the nail 3 is hit and driven into wood or the like.

  The connecting band remaining portion 2a after the nail 3 is driven is discharged to a discharge port 6 (see FIGS. 2, 4, and 5) formed in the nose case 5a. As shown in FIGS. 2 and 4, the discharge port 6 is formed in a plane L shape. In the state where the nail 3 is held, after the connecting band 2 formed in a U-shape is driven, the tongue piece 1c on the lower side is extended in a plane, and the inverted L-shaped outlet 6 It passes through the inside.

  Here, the feature of the present invention is that the claw 8 shown in FIGS. 2 and 5 is provided projecting obliquely toward the outside of the discharge port, adjacent to the edge of the discharge port 6. As shown in FIGS. 1 and 3, the position of the claw 8 is aligned with the position through which the feed hole 1 of the connecting band remaining portion 2a passes. At the same time, the direction is formed obliquely toward the center of the discharge port 6 as shown in FIG. The position of the claw tip 8a of the claw 8 is arranged so as to contact the downstream edge of the feed hole 1 adjacent to the outlet.

  That is, when the connecting band remaining portion 2a is discharged by one pitch through the feed hole 1 by the feed claw 11 of the nail feeding device 12, the claw tip 8a contacts the slightly downstream side of the feed hole 1. As a result, as shown in FIG. 5, the connecting band remaining portion 2a is pressed in the opposite direction to the coiled winding rod to prevent the tip portion from being wound around the nose case 5a as much as possible. Try not to get in the way. As an example, the distance between the claw tip 8a and the feed hole 1 of the connecting band 2 is preferably about 0.5 to 2 mm, and more preferably about 0.7 to 1.5 mm.

  The reason why the distance between the claw tip 8a and the feed hole 1 of the connection band 2 is close is to facilitate cutting of the connection band remaining portion 2a. That is, in order to cut the connecting band remaining portion 2a, as shown in FIG. 8, it is stretched to the side opposite to the direction of the discharge port 6. Then, the connecting band remaining portion 2 a is stretched by elastic deformation or the feeding play of the connecting band 2 and the like, and the feed hole 1 of the connecting band remaining portion 2 a adjacent to the discharge port 6 is easily fitted to the claw 8. Therefore, by pulling the connecting band remaining portion 2a sideways, it is easily cut by the blades 8b provided on both sides of the claw 8.

  As shown in FIG. 6, the claw 8 has a flat trapezoidal shape with a claw tip 8a and blades 8b on both sides. The blade width of the claw 8, as shown in FIGS. 7B to 7D, is such that the width N of the claw tip 8a is smaller than the length X of the feed hole 1 of the connecting band remaining portion 2a, and The width M is larger than the width X of the feed hole 1. For this reason, when the feed hole 1 is completely fitted into the claw 8, both sides in the longitudinal direction of the feed hole 1 are cut by the blades 8b on both sides, and the connecting band remaining portion 2a can be easily cut out therefrom.

Next, FIGS. 11 and 12 show a second embodiment of the present invention.
In this example, the discharge port 6 of the nailing machine is formed in the opposite direction to that in FIG.
Also in this case, the claw 8 protrudes from the edge of the discharge port 6 and its tip contacts the edge of the feed hole 1 of the remaining connecting band 2a. The other structure is formed to have the same operation and effect as the first embodiment.

  In any case, when cutting the connection band remaining portion 2a, the feed hole 1 is fitted to the claw tip 8a, and by pulling the connection band remaining portion 2a, the tensile force is applied only from the feed hole 1 to the downstream side. It is not transmitted to the upstream side of 8. Therefore, no force is applied to the nail 3 arranged in parallel with the nail feeding device 12 when the connecting band remaining portion 2a is cut, and the posture can be maintained normally, and the nail clogging in the nose 5 can be surely prevented. At the same time, the claws 8 can correct the coiled bent wrinkles of the connecting band remaining portion 2a.

1 Feed hole
1a Nail holder
1b folding line
1c Tongue piece 2 Connecting band
2a Remaining tie

3 nails 4 magazine 5 nose
5a Nose case 6 Outlet 7 Nailer 8 Nail

8a Nail tip
8b Blade 9 Trigger
10 Nail guide
11 Feeding claw
12 Nail feeder
13 Driver

Claims (4)

A connecting band (2) in which a number of feed holes (1) for frame feeding are spaced apart in the longitudinal direction and arranged at regular intervals is used, and a number of nails (3) are arranged in parallel with the connecting band (2). It is connected, wound in a coil shape and loaded into the magazine (4), the paralleled nails (3) are sequentially supplied to the nose (5), and the nails (5) are fed into the nose (5) 3) was removed from the connection band (2) and driven, and the remaining connection band (2a) after the nail (3) was driven was discharged from the discharge port (6) adjacent to the nose (5). In the nailing machine (7), the cutting mechanism of the connection band remaining part (2a) in the nailing machine (7),
A claw (8) protrudes from the edge of the discharge port (6) and adjacent to the position where the feed hole (1) of the connection band remaining portion (2a) passes,
The claw (8) is located in the feed hole (1) adjacent to the outlet of the discharge port of the remaining connection band (2a) when the position of the claw tip (8a) is in use by the nailer (7). It is located slightly downstream of the downstream hole edge (1a), and when the discharged connection band remaining part (2a) is pulled toward the claw (8) side, due to elastic deformation of the connection band (2) and play of its feed The cutting mechanism of the remaining connecting band in the nailing machine, wherein the feed hole (1) is configured to fit into the claw (8). In the nail driver (7) according to claim 1,
The claw (8) is disposed obliquely toward the outside of the discharge port and obliquely to the center side in the width direction of the discharge port (6) of the connection band remaining portion (2a) and discharged from the discharge port (6). When the claw (8) comes into contact with the connection band remaining part (2a) at a position adjacent to the discharge port (6) of the connected band remaining part (2a), The cutting mechanism of the connection band remaining part in the nailing machine in which the connection band remaining part (2a) is guided. In the cutting mechanism of the connection band remaining part in the nail driver according to claim 1 or 2,
The claw (8) is a cutting mechanism for the remaining portion of the connection band in the nailing machine in which a blade (8b) is formed on the side in the width direction. In the cutting mechanism of the connection band remaining part in the nail driver according to claim 3,
The width of the claw tip (8a) of the claw (8) is smaller than the length in the width direction of the feed hole (1), and the width of the base of the claw (8) is larger than the length in the width direction of the feed hole (1). The cutting mechanism of the remaining part of the connecting band in the nailing machine which is large.

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