JPH10315152A - Stopper feeding device for driving machine - Google Patents

Abstract

(57) [Problem] An object of the present invention is to provide a fastener feeding device for a driving machine that sequentially feeds a leading fastener of a connecting fastener to an injection port.
An object of the present invention is to surely prevent the connection stopper from retreating with the retreat of the feeder even if the connection stopper has been damaged by the impact at the time of driving. SOLUTION: At least two non-return claws 30 which operate independently of each other are provided along a feeding direction of a connecting stopper 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener feeding device for a driving machine which sequentially feeds leading fasteners of fasteners having fasteners such as nails connected at substantially equal intervals to an injection port. It is.

[0002]

2. Description of the Related Art FIG. 4 shows a driving machine provided with an example of a conventional stopper feeding device. 5 and 6 are enlarged cross-sectional views of a main part of FIG. 4 showing an operation state of the stopper feeding device. The driving machine holds the driver blade 3 so as to be able to move up and down inside, a main body 1 having an injection port 12 at the lower part of which the driver blade 3 is driven, a connecting nail 2 provided below the main body 1 and connecting a plurality of nails.
And a nail feeder 4 that feeds the leading nail of the connecting nail 2 to the injection port 12. The connecting nail 2 connects a plurality of nails at substantially equal intervals by a connecting material 26 such as a wire or a plastic, and the connecting nail 2 passes through a nail passage 17 provided in the nail feeding section 4 and from the magazine 25. It is fed to the injection port 12.

As shown in FIG. 5, the nail feeding section 4 moves toward the injection port 12 in conjunction with the ascending operation of the driver blade 3, and rotates with the piston 8 separated from the injection port 12 in conjunction with the descending operation. The feeder 7, which is fixed as possible, is located on the opposite side of the feeder 7 via the nail passage 17, one end is fixed by a pin 10, and a non-return portion 9 rotatable around the pin 10 is provided. The tip of the feeder 7 is urged toward the nail passage 17 by a spring 15, and the tip of the check portion 9 is urged toward the nail passage 17 by a spring 28. Two feed claws 13 and 14 projecting into the nail passage 17 are provided at the tip of the feeder 7, and a check claw 30 is provided at the tip of the check portion 9.

[0005] As shown in FIG.
When the connecting nail 2 is set in the nail feeding section 4 so as to be located in the nail 2, the feeding nail 13 of the feeder 7 is located between the nail 2a and the second nail 2b, and the feeding nail 14 is located in the second nail 2b. And the third nail 2c, the check nail 30 of the check part 9 is
b and the nail 2c. In this state, if the driver blade 3 is lowered and the nail 2a is driven, the feeder 7 retreats away from the injection port 12 in conjunction with this operation. When the stopper 9 is retracted by the feed claws 13 and 14 at the tip of the feeder 7, the connecting nail 2 is moved.
Work so as not to recede. Since the check nail 30 is located between the nail 2b and the nail 2c, the connecting nail 2 can move toward the injection port 12 but cannot retreat. When the feeder 7 retreats, the feed claws 13 and 14 provided at the tip end also try to retreat. However, since the connecting nail 2 is prevented from retreating by the check nail 30, the tip of the feeder 7 as shown in FIG. Part of the feeding claw 13,
14 retreats away from the nail passage 17 against the spring 15. The feeder 7 is retracted until the feed claw 13 is located between the nail 2b and the nail 2c and the feed claw 14 is located between the nail 2c and the nail 2d. When the driving of the nail 2a is completed and the driver blade 3 is lifted, the feeder 7 moves to the ejection port 12 side in conjunction with this operation, and the feed nail 13 moves the nail 2b to the ejection port 12.
Feed inside. At this time, since the connecting nail 2 moves to the injection port 12 side, the check nail 30 is moved by the spring 2 by the nail 2c.
Away from the nail passage 17 against

[0005]

SUMMARY OF THE INVENTION A connecting member 2 for connecting nails
When 6 is made of plastic, the striking force of the driver blade 3 is applied during the driving operation, and the connecting member 26 is broken at an angle of about 45 ° with respect to the axial direction of the nail as shown in FIG. In some cases, the nail 2b and the nail 2c are barely connected by a part of the connecting member 26. In the above-described conventional stopper feeding device, when the feeder 7 is retracted, the check pawl 30 is located between the nail 2b and the nail 2c, and the feeder 7 is rotated by the nail 2b against the spring 15 to feed. The nail 13 tries to retreat while separating from the nail 2b, but when the feeding nail 13 separates from the nail 2b, the tip of the feeding nail 14 is still positioned between the nail 2b and the nail 2c as shown in FIG. Therefore, in the case of the connecting nail 2 in which the connecting member 26 is broken as described above, the nail 2b and the nail 2c are easily separated by the force of the feed nail 14 to retreat, and the nail 2b and the nail 2c
If the feed nail 14 is separated from the nail 2c, the connecting nail 2 on the magazine 25 side may retreat with the retraction of the feed nail 14. If the nail on the magazine 25 side is retracted from the nail 2c together with the retraction of the feed claw 14 from the nail 2c, the nail 2b that has not been retracted by the check claw 30 is fed into the injection port 12 and the nail cannot be fed. turn into.

[0006] In order to solve the above-mentioned drawbacks, a check portion 9 is provided.
It is conceivable that the check nail is added to the third nail 2c and the fourth nail 2d or between the fourth nail 5d and the fifth nail 2e. With such a configuration, if the distance between the nails of the connecting nail 2 varies, and the added check nail is not located between the nails and runs over the nail shaft, the check part is not used. 9 rotates about the pin 10 as a fulcrum, the check nail 30 located between the second nail 2b and the third nail 2c also moves away from the nail passage 17, and the connecting nail 2 There is a disadvantage that the vehicle retreats with the retreat. SUMMARY OF THE INVENTION An object of the present invention is to provide a fastener feeding device for a driving machine which solves the above-mentioned drawbacks and can reliably feed a fastener even if a connecting member is broken by a hit at the time of driving. That is.

[0007]

The above object is achieved by providing at least two independently operated check pawls along the feed direction of the connecting stopper.

[0008]

1 to 3 show an embodiment of a stopper feeding device according to the present invention. The configuration other than the nail feeding section 4 is shown in FIG.
Since it is the same as the driving machine shown in FIG.

As shown in FIG. 2, a pin 1 is
Non-return portions 9c, 9d fixed by 0 and rotatable about the pin 10 are provided.
Each has a check claw 30c which can protrude into the nail passage 17;
30d is provided, and the non-return portions 9c, 9d are urged toward the nail passage 17 side by springs 28, respectively, so that the non-return claws 30c, 30d protrude into the nail passage 17. FIG. 2 is a sectional view taken along line AA of FIG.
Since the nail feeding portion 4 is viewed from below, the two non-return portions 9c and 9d provided on the lower end side of the nail and the non-return claws 30c provided on the non-return portions 9c and 9d are provided. Although only 30d is shown, a check part 9a provided with a check claw 30a and a check part 9b provided with a check claw 30b are similarly provided at the upper end side of the nail. Is provided with a total of four check portions 9 and check claws 30 (see FIG. 1).

When the connecting nail 2 is set in the nail feeding section 4 so that the leading nail 2a is positioned in the injection port 12, the feeding nail of the feeder 7 provided in the nail feeding section 4 as shown in FIG. 1
3 is between the nail 2a and the second nail 2b;
b and the nail 2c, the check nails 30a and 30c are located between the nail 2b and the nail 2c, and the check nails 30b and 30d are located between the nail 2c and the nail 2d. The check claws 30a and 30d prevent the nail 2b from moving backward and the check claws 30b and 30c prevent the nail 2d from moving backward away from the injection port 12.

When the driver blade 3 descends, the feeder 7 retreats in conjunction with this operation. At this time, since the check pawls 30a and 30c are located between the nails 2b and 2c, the feeder 7 Retreats while the feeding claw 13 is pivoted away from the nail 2b. When the feed claw 13 is separated from the nail 2b, the tip of the feed claw 14 is located between the nail 2b and the nail 2c.
When the connecting member 26 made of plastic or the like is damaged by the impact force of the driver blade 3, the nail 2b and the nail 2c are easily separated from each other. Even if the nail 2b and the nail 2c are separated, the check nails 30b and 30d provided so as to be located between the nail 2d and the nail 2e work so as not to retreat the nail 2d. There is no possibility that the connecting nail 2 on the magazine 25 side is retracted from the nail 2c to make it impossible to feed the nail. In addition, a check claw 3 is provided on the upper end side of the nail between the nail 2d and the nail 2e.
0b, a configuration in which at least two check nails 30 are provided in the axial direction of the nail such that a check nail 30d is provided on the lower end side of the nail, and one of the check nails 30 is provided between the nail and the nail. , The retreat of the connecting nail 2 can be prevented, so that even if the connecting nail 2 is connected while the nail is inclined, it is possible to prevent the nail from being unable to be fed. Furthermore, since the check nails 30a and 30b which operate independently are provided at least two along the feed direction of the connecting nail 2, the nail spacing of the connecting nail 2 varies, and the check nail 30b is Even if it gets on the shaft, the check claw 30a does not separate from the nail passage 17 together with the check claw 30b, and the retreat of the connecting nail 2 can be prevented.

In the above embodiment, when the connecting nail 2 is set in the nail feeding section 4 so that the nail 2a is located in the injection opening 12, the space between the nail 2b and the nail 2c and the distance between the nail 2c and the nail 2d can be reduced. The check pawls 30 are located between the nails. However, this is because even when the connecting nail 2 in which the nail is connected to the nail feeding unit 4 by the connecting material 26 such as a wire is set, the nail can be fed accurately. It is a structure of. That is, when the connecting nail 2 whose connecting material 26 is a wire is set in the nail feeding section 4 in which the check nail 30 is located closer to the magazine 25 than the feed claws 13 and 14 of the feeder 7, the feeder 7 is made of wire. This is because a certain connecting member 26 may be retracted while being deformed, and the deformed wire may make nail feeding impossible. However, if the connecting member 26 is a nailing machine that uses only the connecting nail 2 formed of a member that hardly deforms, such as plastic, the check nail 3
0 is a magazine 25 more than the feed claws 13 and 14 of the feeder 7.
There is almost no problem even with the configuration located on the side,
At least two check nails 30 along the feed direction of the connecting nail 2
Any configuration may be used if provided.

[0013]

As described above, according to the present invention, at least two check pawls are provided along the feed direction of the connecting stopper, and the check pawls are operated independently of each other. It is possible to provide a fastener feeding device of a driving machine that can reliably perform fastener feeding even if the connecting member is damaged by the impact at the time.

[Brief description of the drawings]

FIG. 1 is a partially sectional front view showing an embodiment of a driving machine provided with a stopper feeding device of the present invention.

FIG. 2 is a sectional view of a main part taken along line AA of FIG. 1;

FIG. 3 is a cross-sectional view of a main part taken along line AA of FIG. 1 when the feeder is retracted.

FIG. 4 is a partially sectional front view showing an example of a conventional driving machine.

FIG. 5 is a sectional view of a main part taken along line BB of FIG. 4;

FIG. 6 is a cross-sectional view of a main part taken along line BB of FIG. 4 when the feeder is retracted.

[Explanation of symbols]

1 is a driving machine main body, 2 is a connecting nail, 4 is a nail feeding section, 7 is a feeder, 13 and 14 are feeding claws, 25 is a magazine, and 30 is a check nail.

Claims (3)

[Claims] 1. A driver blade driven by compressed air for striking a leading stop located at an ejection port of a connection stop, wherein the stop is connected at substantially equal intervals, and a magazine for storing the connection stop. A feeder that feeds the first stop of the connection stopper stored in the magazine to the ejection port and feeds the connection stopper to the ejection port, and is located between the stoppers of the connection stopper and the connection stopper. And a stopper feeding portion provided with a check claw that allows the tool to move only to the injection port side.
A stopper feeding device for a driving machine, wherein a plurality of stoppers are provided and the check claws are operated independently. 2. The driving machine according to claim 1, wherein at least two check pawls are provided in the axial direction of the stopper. 3. One of the check pawls is located between the second stop and the third stop from the first stop located at the injection port, and the other check pawls are the third and subsequent stop. 2. A fastener feeding device for a driving machine according to claim 1, wherein said fastener is located between said fasteners.