JP2001062752A - Nail feeding mechanism of nail driving machine for connected nail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely drive up to the last one nail, and surely feed even the tip part of a nail into a nose part. SOLUTION: This nail feeding mechanism comprises a fixed guide wall 5 and openable door members 4 positioned with a specified distance from each other. First feeding means 6 having a plurality of claws movable forward to a nail feeding path 3 formed along a nail axis directions provided slidably on the fixed guide wall 5 at a position close to a nose part 1 of the nail feeding path and in the direction apart from that position. A separator 10 slidable between a position for moving forward into a magazine 2 and a position for escaping from the magazine 2 is provided on a door member 4, and second feeding means 14 having a claw capable of being moved forward to the nail feeding path and engageable with a nail axis inside the magazine 2 and nail feeding path is supported on the separator 10. Then, the first feeding means 6 and the separator 10 are reciprocated by drive means in the nail feeding direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nail feeder for a nailing machine for a nail for continuously supplying a plurality of connecting nails connected in a straight line from a magazine capable of accommodating them in parallel to a nose part. Regarding the mechanism.

[0002]

2. Description of the Related Art A power nailing machine driven by compressed air uses a connecting nail in which a connecting nail is wound in a coil shape or a connecting nail which is connected linearly (also called a stick nail). There are types that use. In particular, many large nails are connected in a straight line because the weight in the connected state increases. In order to facilitate handling of the nails, a series of connecting numbers are connected to about 20 to 30 or more. Therefore, the number of nails that can be loaded into a nailing machine at one time is limited in a nailing machine using a linear connecting nail, and a continuous nailing operation requires an operation of frequently loading nails.
In some nailing machines, a long magazine is installed so that a plurality of connecting nails can be loaded and stored in tandem in order to store a large amount of nails in a magazine. However, the rear part of the long magazine protruded long behind the nailing machine, which hindered nailing work.

Japanese Patent Publication No. 06-61706 discloses a nail in which a plurality of linearly connected connecting nails are housed in parallel in a magazine and these connecting nails are sequentially supplied to a nose portion of a nailing machine. A percussion machine is shown. With this mechanism, the length of the magazine can be reduced, and there is no damage to nailing work in a narrow place. In the above-described conventional nail supply mechanism, one nail engaging member is installed on a separator that reciprocates along a nail supply path formed between a magazine and a nose portion for nail driving, and this nail enters into the magazine. The nail engages with the nail to feed it toward the nose. Therefore, the nail transferred to the front of the separator does not come off the engagement member and is not directly sent. For this reason, there has been a problem that the last few remaining connection nails remain on the nail feed passage. Further, since the engaging member is engaged only at one position of the nail shaft, there is a problem that the nail supplied into the nose portion is inclined and the nail tip jumps out rearward.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and supplies a plurality of connecting nails connected in a straight line from a magazine capable of accommodating a plurality of parallel connecting nails to a nose part in a continuous manner. An object of the present invention is to provide a nail supply mechanism that can reliably drive the last one of the nails and that can reliably feed the tip of the nail into the nose.

[0005]

In order to solve the above-mentioned problems, a nail feeding mechanism in a nailing machine for a connecting nail according to the present invention comprises a magazine capable of accommodating a plurality of connecting nails connected in a straight line in a parallel state. A nail driving machine adapted to continuously supply the connecting nails to a nose portion, wherein a fixed guide wall constituting a nail supply path for guiding the connecting nails between the magazine and the nose portion; It has an openable and closable door member facing the guide wall at a predetermined interval, and the fixed guide wall has
A first feeding means formed with a plurality of nails that can advance into the nail supply path along the nail axis direction is provided slidably in a position close to the nose portion of the nail supply path and in a direction away from the nose part, and the door member includes: Provide a slidable separator between a position to enter the magazine and a position to completely retract from the magazine,
The separator has a second claw that can advance into the nail supply path and engage with a nail shaft in the magazine and the nail supply path.
A feeding means is carried, and the first feeding means and the separator are reciprocated in a nail feeding direction by a driving means.

[0006]

FIG. 1 shows a part of a nailing machine in which a nail feeding mechanism according to the present invention is implemented. One of guide walls of a nail supply path 3 formed between a nose portion 1 and a magazine 2 is shown. Is shown in a state where the door member 4 constituting the above is opened. The fixed guide wall 5 constituting the other guide wall of the nail supply path 3 is provided with a first feeding means 6 from the rear side of the wall toward the inside of the passage, and the first feeding means 6 is provided with a nail. A reciprocating movement is possible in a predetermined range of a portion of the supply path 3 close to the nose portion 1. The first feeding means 6 is carried on a nail supply path 3 shown in FIGS. 2 and 3 and a piston rod 8 of a feeding piston / cylinder mechanism 7 (driving means) arranged along the back side of the magazine 2 to supply nails. It is driven back and forth along the road 3.
The first feeding means 6 includes a feeding claw 9 protruding into the nail supply path 3.
Are formed along the length direction of the nail shaft.

On the door member 4 side, a separator 10 is provided so as to be slidable along the nail supply path 3, and the separator 10 is provided within a range where the separator 10 enters the rear magazine 2 from the center of the nail supply path 3. It is possible to move. This separator 1
A connecting piece 11 (see FIG. 4) protruding upward is integrally formed at 0, and the connecting rod 12 and the door member 4 extending from the piston rod 8 so as to straddle the fixed guide wall 5 are closed. When the piston rod 8 is engaged, the piston rod 8 is actuated to be driven simultaneously with the first feed means 6. The feed claw 1 protruding toward the nail supply path 3 is provided on the separator 10.
2 is provided.

As shown in FIG. 2, the first feed means 6 is rotatably supported by a pin 16 which is loosely fitted in an elongated hole 15 formed in the piston rod 8, and is fitted to the piston rod 8. It is urged forward by the inserted spring 17. On the other hand, since the separator 10 is engaged with the piston rod 8 via the connecting rod 11, the separator 10 moves integrally with the operating stroke of the piston rod 8 until the separator 10 enters the magazine 2. As a result, the stroke is limited and the nail is driven in a range slightly larger than the connecting pitch of the connecting nail. The feed piston 8a is retracted by the introduction of compressed air into the front end of the feed cylinder 18 near the end of the driving for nailing.
It moves forward by the action of a compression spring (not shown) built therein.

A plurality of connecting nails 20 connected in a straight line are accommodated in the magazine 2 in parallel. In the nail supply path 3, a check nail 21 of the connecting nail 20 is arranged.

Next, the manner of supplying nails will be described with reference to FIGS.

FIG. 5 shows that the magazine 2 has three connecting nails 20A,
20B and 20C are loaded, the piston rod 8 is arranged at the front end position, and both the first feeding means 6 and the separator 10 (second feeding means 14) have been moved to the front end position.

Here, the feed piston 8a is driven backward by operating the nailing machine idling as shown in FIG. 6, whereby the separator 10 enters the magazine 2 and a series of connecting nails 20A and 20B. And divide. At this time, a relationship is established in which the claw 13 of the second feeding means 14 is engaged with the leading nail 20a of the divided connecting nail 20A. Since the first feed means 6 is urged forward by the spring 17 (see FIG. 2) in the elongated hole 15, it engages with the end of the elongated hole 15 at the end of the stroke of the piston rod 8, and the predetermined amount of stroke is applied. fall back.

When the idling operation is completed, the piston rod 8
Moves forward as shown in FIG. 7, and the separator 10 and the first feeding means 6 are moved to the front end position. The connecting nail 20A is moved forward by the second feeding means 14 carried by the separator 10. The connecting nail 20 </ b> A engages with the check nail 21 disposed on the fixed guide wall 5.

Further, the separator 10 and the first feeding means 6 are retracted again as shown in FIG. 8 by the second idling operation. The connecting nail 20A is engaged with the check nail 21 and stays at the same position, and the nail 13 of the second feeding means 14 is connected to the connecting nail 20A.
Engage with any nail in A.

When the second blanking is completed, the separator 10 and the first feeding means 6 advance as shown in FIG.
The connecting nail 20A is further advanced. Up to this point, the leading nail of the connecting nail 20A has not reached the nose portion 1.

By the third idle driving operation, the separator 10 enters the magazine 2 as shown in FIG. 10, and the second feeding means 14 engages with the nail further behind the connecting nail 20A. As shown in FIG. 11, the separator 10 moves forward by the return of the idling operation, and the claw 13 of the second feeding means 14 is moved.
The connecting nail 20A engaged with is advanced. First feeding means 6
Abuts on the nose portion 1 and is prevented from advancing, but the second feeding means 14 carried by the separator 10 is further advanced, and the leading nail 20a rotates the claw 9 of the first feeding means 6. And stopped at the position where it is pushed into the nose part 1.

The leading nail 20a supplied into the nose portion 1
Is driven by the hitting mechanism by the next driving operation. As shown in FIG. 12, the separator 10 and the first feeding means 6 retreat in synchronization with the driving of the nail, and the first feeding means 6
Claw 9 enters behind the nail shaft at the leading position and engages,
The claw 13 of the second feeding means 14 carried by the separator 10 is engaged with the rear nail of the connecting nail 20A.

In the next return stroke, the first feeding means 6 and the separator 10 advance as shown in FIG.
Pushes the leading nail 20b into the nose part 1, and the second feeding means 14 moves the entire connecting nail 20A forward. Since the nail is fed by a plurality of claws 9 along the nail axis at a position close to the nose part 1, the posture of the nail supplied into the nose part 2 is stable, and the tip of the nail is rearward when hit. Danger such as jumping out can be prevented.

Thereafter, the operations shown in FIGS. 12 and 13 are repeated, and the nail of the first connecting nail 20A is sequentially sent out from the nail supply path 3 to the nose portion 1. During this time, the second and subsequent connecting nails 20B are not moved toward the fixed guide wall 5 because part of the separator 10 always remains in the magazine 2.

Further, as shown in FIG.
0A is consumed and the second nail engaged with the last nail of the first series
When the feeding means 14 gradually moves to the front position and the separator 10 moves to the position retracted from the magazine 2,
The second connecting nail 20B is moved toward the fixed guide wall 5 by a pusher spring (not shown).

By the next driving operation, the separator 10 enters the magazine 2 as shown in FIG. 15 to separate the second connecting nail 20B and the third connecting nail 20C, and the second feeding means 14 is connected to the second connecting nail 20B. It engages with the leading nail of the eye connecting nail 20B. The first feeding means 6 is used for the remaining leading nail 2 of the first connecting nail 20A.
0n (the connecting nail 20A is prevented from retreating by the check nail 21 provided facing the first feeding means 6).

Then, at the return stroke of the piston rod 8, the first feeding means 6 pushes the leading nail 20n into the nose part 1 as shown in FIG. 16, and the second feeding means 14 pushes the second connecting nail 20B into the magazine. 2 to the nail supply path 3, and is brought into contact with the first connecting nail 20A behind the final nail 20x. At this time, depending on the setting of the stroke of the piston rod 8, the second connecting nail 20B and the first connecting nail 20A cannot be brought into contact at once, and a gap may be formed. If the number of hits is less than or equal to the number of remaining nails of the eye connecting nail 20A, it is possible to continuously drive the nail.

Next, a state where the last nail of the last connecting nail 20C is supplied into the nose portion 1 and driven is described with reference to FIGS.

When the remaining number of the last connecting nails 20C decreases, the second feeding means 14 does not contact the connecting nails 20C at all, as shown in FIG. It operates between the front positions completely retracted from the magazine 2. The nail 9 of the first feeding means 6 enters the rear of the leading nail of the remaining connecting nails 20 that is prevented from retreating by the check nail 21 during the nail striking process, and is shown in FIG. The operation of feeding this into the nose portion 1 is repeated as shown in FIG. Further, at the time of the next striking stroke, the first feeding means 6 which has entered behind the last nail 20z locked by the check nail 21 as shown in FIG. The last nail 2 as shown in FIG.
0z is supplied into the nose portion 1. This is driven out from the nose part 1 and the driving of all nails is completed.

The operation from the loading of the connecting nail 20 into the magazine 2 to the feeding of the first nail into the nose portion 1 is performed by the idle driving of the nailing machine as described above. The present invention is not limited to the example in which the feed piston / cylinder mechanism 7 is operated. In order to prevent damage due to the idling operation of the striking mechanism, an actuating mechanism having only a manual feed piston may be configured. For example, it can be realized by installing a manually operated valve for supplying and discharging compressed air to the front end of the feed cylinder 18.

As described above, since the second feed means 14 which can be engaged with the nail shaft is provided on the separator 10 which slides within the range of entering and retracting into the magazine 2, a plurality of connecting nails can be continuously connected to the magazine. 2 to the nail supply path 3.

Further, since the first feeding means 6 having a plurality of claws 9 formed along the nail axis direction is installed at a position close to the nose portion 1, the last nail can be reliably fed into the nose portion 1. And never waste nails.

Further, since a plurality of claws 9 are fed along the nail axis at a position close to the nose portion 1, the posture of the nail supplied into the nose portion 1 is stable, and the nail is supplied when hit. Danger such that the tip of the nose jumps rearward can be prevented.

In addition, since the separator 10 carrying the second feeding means 14 is provided on the door member 4, the number of parts can be reduced, and by opening the door member 4, work such as repair can be easily performed. Can be.

Further, the second feeding means 1 is attached to the separator 10.
Since the separator 4 is provided, the second feeding means 14 can be driven at the same time by driving the separator 10.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a part of a nailing machine in which a nail feeding mechanism according to the present invention is implemented.

FIG. 2 is a cross-sectional view of the nailing machine with a door member closed.

FIG. 3 is a longitudinal sectional view of the nailing machine cut by a first feeding means.

FIG. 4 is a longitudinal sectional view of the nailing machine cut by a second feeding means.

FIG. 5 is a sectional view showing a state where a connecting nail is loaded in a magazine;

FIG. 6 is a sectional view showing a state in which a feed piston is retracted.

FIG. 7 is a sectional view showing a state in which the feed piston has returned and advanced.

FIG. 8 is a sectional view showing a state in which the feed piston is retracted again.

FIG. 9 is a sectional view showing a state in which the feed piston has returned and advanced again.

FIG. 10 is a sectional view showing a state in which the feed piston is retracted again.

FIG. 11 is a sectional view showing a state in which the feed piston has returned and advanced again.

FIG. 12 is a sectional view showing a state in which a feed piston is retracted.

FIG. 13 is a cross-sectional view showing a state in which the feed piston is in the middle of a return process.

FIG. 14 is a cross-sectional view showing a state in which the feed piston returns.

FIG. 15 is a cross-sectional view showing a state where the feed piston is retracted again.

FIG. 16 is a sectional view showing a state in which the feed piston has returned and advanced again.

FIGS. 17 (a) to (d) are explanatory views of a nail feeding mode of the last connecting nail in the nail supply path.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nose part 2 Magazine 3 Nail supply path 4 Door member 5 Fixed guide wall 6 First feed means 10 Separator 14 Second feed means 20, 20A, 20B, 20C Connecting nail

Claims (1)

[Claims] 1. A nailing machine for continuously supplying a plurality of connecting nails connected in a straight line to a nose portion from a magazine capable of accommodating a plurality of connecting nails in a parallel state, wherein the magazine and the nose are provided. A fixed guide wall that forms a nail supply path for guiding the connecting nail between the sections, and an openable and closable door member that faces the fixed guide wall at a predetermined interval, the fixed guide wall includes: A first feeding means having a plurality of nails which can be advanced to the nail supply path formed along the nail axis direction is slidably provided in a position close to the nose portion of the nail supply path and in a direction away from the nose part, A separator is provided which is slidable between a position for entering the magazine and a position for completely retracting from the magazine. Second sender having pawl engageable with shaft A nail feeding mechanism in a nailing machine for a connected nail, wherein a step is carried and the first feeding means and the separator are reciprocated in a nail feeding direction by a driving means.