JP2001198847A - Nail feeder for nailing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed nails to a nail passage from a magazine stably even with a dual-purpose nail driver using a wire connecting nail or a plastic sheet connecting nail. SOLUTION: A groove surface 17 of a tail cover 6 support-guiding a nail head bottom surface is extended to the magazine 37 side and raised toward nail guide 19 to form a nail head guide 16 guiding the nail head bottom surface even without the upper end of a plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nail feeder of a nail driver for driving a nail.

[0002]

2. Description of the Related Art As shown in FIGS. 6 and 7, a nail 2 for a nailing machine is connected and wound substantially in parallel at equal intervals by a connecting material such as a wire 7 or a plastic sheet 8. The nail loaded in the magazine section is pulled out from the opening of the magazine and sent to the injection port via a nail passage formed between the tail cover and the nail guide.

[0003] Examples of the nailing machine 1 include a dedicated wire connecting nail machine, a dedicated plastic sheet connecting nail machine, and a combined wire / plastic sheet connecting nail machine. The shape of the nail passage of the wire dedicated machine is
As shown in FIGS. 9 and 10, the periphery is formed in substantially the same shape as the nail connection shape. The nail side faces are the guide surface 13 of the tail cover 6, the guide surface 21 of the nail guide 19, the magazine 3
7 is guided by the nail passage 18 formed by the magazine cover 38 and the nail head upper surface is formed by the groove surface 4 of the tail cover 6.
3. Guided by magazine cover 38, nail head bottom is nail head 1
4 is guided by the groove surface 17 of the tail cover 6 and the nail groove 49 of the nail guide 19.

As shown in FIGS. 11 and 12 described in Japanese Utility Model Publication No. 5-46850, the groove through which the nail head 14 passes is the same, and the width of the nail passage 18 is variable on the nail guide 19 side. The plate 50 urged toward the nail passage 18 side
When using a wire connecting nail, the plate 50 protrudes, and when using a plastic sheet connecting nail, the plate 50 is in contact with the plastic sheet 8 and the plate 50 is dented.

[0005] Both the wire and the plastic sheet connecting nail,
The nail side surface is guided by the nail passage 18 formed by the guide surface 13 of the tail cover 6, the guide surface 21 of the nail guide 19, the guide surface 42 of the magazine 37, and the magazine cover 38. Surface 43, magazine cover 38
Will be guided by. The nail head bottom surface is guided by the groove surface 17 of the tail cover 6 and the upper end surface 51 of the plate 50 for the wire connection nail, and is guided by the groove surface 17 of the tail cover 6 and the groove surface 47 of the nail guide 19 for the plastic sheet connection nail. You.

The nail head bottom surface from the magazine portion 36 to the nail passage 18 formed between the tail cover 6 and the nail guide 19 is held and guided by the rigidity of a connecting member such as a wire 7 or a plastic sheet 8.

[0007]

The bottom surface of the nail head from the magazine 37 to the nail passage 18 is held and guided by the rigidity of the connecting member, but the connecting member is a deformable soft material. , The rigidity of the connecting member is relatively low in the case of a nail having a large mass, and as shown in FIG. 8, FIG. 13 and FIG. The connecting member is deformed downward due to the reaction or vibration of driving the nail 2 in between, and falls off from the nail passage 18 and gets stuck on the guide surface 13 of the tail cover 6, which may cause a feeding failure.

In order to prevent this feeding failure, as shown in FIG. 8, a nail guide 52 for holding the nail feet 44 is provided on the nail guide surface 42 of the magazine 37 to prevent the connecting member from being deformed. In general, the nailing machine 1 can use nails 2 of a plurality of lengths, and the nail foot guide 52 is effective for the nail 2 having the maximum specification length. There is a problem that a feeding failure may occur due to the deformation without reaching the nail guide 52.

In the plastic sheet connecting nail, the groove surface 17 of the tail cover 6 and the groove surface 47 of the nail guide 19 are extended so that the guide length in the axial direction of the nail can be increased to cope with downward deformation. For nails, groove surface 17 of tail cover 6
However, since the upper end surface 51 of the plate 50 rotates about the shaft 52 of the guide lock 24, there is a problem that it cannot be extended and cannot cope with downward deformation.

It is an object of the present invention to stably feed nails from a magazine to a nail passage even with a dual-purpose machine.

[0011]

SUMMARY OF THE INVENTION It is an object of the present invention to extend a groove surface of a tail cover, form a portion without a plate high on a nail guide side, and guide a nail head bottom surface without an upper end surface of the plate. This is achieved by forming a head guide, during which the nail guide side is supported by the nail guide sheet groove. The nail head guide is configured to guide all kinds of nails having a specification that the connecting material may be deformed, and to secure a distance between the sheet groove and the nail head guide so that the plastic sheet connecting material can pass through. I do.

[0012]

1 to 7 show one embodiment of the present invention. First, an overall configuration will be described based on the embodiment.

Compressed air from a compressor (not shown) is accumulated in the nailer body 1 via an air hose (not shown). The nail driver body 1 has a driver blade 4 integral with a piston 3 for driving a nail 2 by reciprocating in the axial direction by a driving sign.

The injection section 5 is provided with a tail cover 6, which guides the driver blade 4,
An opening 9 for sequentially feeding and winding the wound nails 2 in parallel and at substantially equal intervals by a connecting material such as a wire 7 and a plastic 8, and the nails 2 are hooked and reciprocated, and are moved to the injection port 10. A window 12 for guiding a feeder 11 for sequentially feeding, a guide surface 13 for guiding a nail shaft 20, and a groove 15 for guiding a nail head 14 in an axial direction.
And a nail head guide 16.

The nail head guide 16 is formed by extending the groove surface 17 of the groove 15 toward the magazine portion 36 and raising the groove surface 17 toward the nail guide 19, so that the connecting member may be deformed.
The distance and shape between the sheet groove 22 and the nail head guide 16 are set so as to guide the bottom surface of the sheet 4 and secure a distance through which the plastic sheet 8 can pass.

A nail guide 19 for forming a nail passage 18 facing the tail cover 6 is provided. The nail guide 19 has a guide surface 21 for guiding the nail shaft 20 and a sheet groove 22 for guiding the plastic sheet 8. The nail guide shaft 2 is mounted so that the nail 2 can be loaded and unloaded.
The guide lock 24 is configured to rotate around the fulcrum 3.
To connect with the tail cover 6. The first nail 25 is loaded in the injection port 10 of the tail cover 6. The feeder 11 is reciprocated by a feed piston 26 and includes a feed claw 27 and a feed claw 28 of the feeder 11. The feed claw 27 is inserted between the first nail 25 and the second nail 29, and the feed claw 28 is It is inserted between the third nail 29 and the third nail 30. The feeder 11 is configured such that the feed pawl 27 and the feed pawl 28 can be protruded and retracted in the nail passage 18 with the pin 31 as a fulcrum, and are urged by a spring 32 in a direction to protrude into the nail passage 18.

The nail guide 19 is provided with a check nail 33 for feeding the nail 2 only in the direction of the injection port 10. The check pawl 33 is configured to be able to protrude and retract in the nail passage 18,
It is urged by a spring (B) 34 in a direction protruding into the nail passage 18. A magazine 36 for storing the wound nail 2 is provided at the end of the handle 35 from near the feed piston 26. The magazine portion 36 includes a magazine 37 for accommodating the nail 2 and a magazine cover 38 configured to be opened and closed by rotating about the pin 18 when the nail 2 is loaded.
And a nail holder 39 that adjusts the length in the nail axis direction according to the length of the nail 2 and supports the nail foot 44. A part of the magazine 37 forms a guide surface 42 substantially flush with the guide surface 13 of the tail cover 6. The magazine cover 38 is hooked by a hook 40 of the nail guide 19.

Next, the driving operation of the nailing machine 1 having the above configuration will be described with reference to FIGS.

When the sign of driving the nail 2 is sent, the driver blade 4 descends rapidly as described above,
The first nail 25 loaded therein is hit and driven into the material to be driven. The feeder 11 linked to the lowering of the driver blade 4 moves to the bottom dead center, but the feed nail 27 and the feed nail 28 come into contact with the second nail 29 and the third nail 30, respectively. 28 moves to the bottom dead center while retracting from the nail passage 18 against the urging force of the spring 32. The check nail 33 is composed of the second nail 29 and the third nail 3
0, and the second and subsequent nails are feed claws 2
7. Even if the feed claw 28 comes into contact and resistance occurs, it does not move.

When the first nail 25 is hit, the reaction due to the rapid movement of the driver blade 4, the reaction due to the driving resistance when the nail 2 is driven into the material to be driven, the piston 3
The nail driving machine body 1 moves rapidly due to a load or the like generated by contact with the piston bumper 41. In order to prevent the nail 2 loaded at this time from staying due to inertial force, the outer periphery of the nail 2 is guided as follows so that the connecting member is not deformed and cannot be fed into the predetermined nail passage 18. I have.

As shown in FIG. 3, the side surface of the wire connecting nail is
Guide surface 13 of tail cover 6, guide surface 21 of nail guide 19, guide surface 42 of magazine 37, magazine cover 3
8, and the nail head upper surface is guided by the groove surface 43 of the tail cover 6 and the magazine cover 38. In the magazine section 36, the nail leg 44 is attached to the nail holder 39.
The nail head guide 16 supports the bottom of the nail head 14 from the magazine 36 to the nail passage 18. Nail head 1
4 is cantilevered, and the nail head 14 tries to escape to the nail guide 19 side, but the nail head 14 is restricted by the sheet groove 22 so as not to come off. The nail head 14 is guided from the nail passage 18 to the injection port 10 by the groove face 17 of the tail cover 6 and the upper end face 46 of the check nail 33.

The side surfaces of the plastic sheet connecting nail are the guide surface 13 of the tail cover 6 and the guide surface 2 of the nail guide 19.
1, the guide groove 42 formed by the seat groove 22, the guide surface 42 of the magazine 37, and the magazine cover 38, and the upper surface of the nail head is formed by the groove surface 43 of the tail cover 6 and the magazine cover 38.
Will be guided by. In the magazine portion 36, the nail leg 44 is supported by the nail holder 39 similarly to the wire connection nail, and the nail passage 18 is formed.
Is guided by the groove surface 17 of the extended tail cover 6 and the groove surface 47 of the nail guide 19. A nail head guide 16 is provided on the tail cover 6 facing the seat groove 22, but a gap through which the plastic sheet connecting nail can pass is ensured.

When the driving end signal is sent, the driver blade 4 rapidly rises and returns, and the feed claw 27 and the feed claw 28 of the feeder 11 interlocked with the rise of the driver blade 4 project into the nail passage 18, and the feed claw 27 Second nail 29 and 3
The feed claw 28 is inserted between the third nail 30 and the fourth nail 48 while being inserted between the third nail 30. Feeder 11
Moves to the top dead center, and the second nail 29 is fed to the injection port 10. While the feeder 11 is moving to the top dead center, the check nail 33 is in contact with the third nail 30 and retreats from the nail passage 18. Thus, one cycle is completed.

[0024]

According to the present invention, the groove surface of the tail cover for guiding the nail head bottom surface is extended toward the magazine side and is formed higher on the nail guide side, thereby guiding the nail head bottom surface without the upper end surface of the plate. Since the nail head guide is formed, the connecting material does not deform even if there is a driving recoil, vibration, etc. even with a combined machine using wires and plastic sheet connecting nails,
The nail can be stably fed from the magazine to the nail passage.

[Brief description of the drawings]

FIG. 1 is a partially sectional side view showing an embodiment of a nailing machine of the present invention when a piston is at a top dead center.

FIG. 2 is a partially sectional side view showing an embodiment of the nailing machine of the present invention when a piston is at a bottom dead center.

FIG. 3A shows a state in which a wire connecting nail is being loaded.
-A line sectional drawing.

FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1 when a plastic sheet connecting nail is loaded.

FIG. 5B shows a state in which a wire connecting nail is being loaded.
-B line sectional drawing.

FIG. 6 is a perspective view showing a wire connecting nail.

FIG. 7 is a perspective view showing a plastic sheet connecting nail.

FIG. 8 is a partial cross-sectional side view showing a state where a piston is located at a bottom dead center and a nail head has fallen from a nail passage in a conventional nailing machine.

FIG. 9C shows a state where the wire connecting nail is being loaded.
-C sectional drawing.

FIG. 10 is a sectional view taken along the line DD in FIG. 8 when the wire connecting nail is being loaded.

FIG. 11 is a plan view showing a state where wire connection nails are loaded in Japanese Utility Model Publication No. 5-46850.

FIG. 12 is a plan view showing a state in which plastic sheet connecting nails are loaded in Japanese Utility Model Publication No. 5-46850.

FIG. 13 is a cross-sectional view taken along the line CC of FIG. 8, showing a state where the nail head has fallen from the nail passage.

FIG. 14 is a sectional view taken along line DD in FIG. 8, showing a state where the nail head has fallen from the nail passage.

[Explanation of symbols]

1 is a nailing machine main body, 6 is a tail cover, 13 is a guide surface, 1
5 is a groove, 16 is a nail head guide.

Claims (1)

[Claims] 1. A driver blade for hitting a nail connected substantially in parallel with a connecting member of a wire or a plastic sheet, a first guide surface for guiding the driver blade and guiding a nail shaft portion to an injection port, and a nail head. A tail cover having a groove for guiding, a second guide surface configured to be openable and closable for loading a nail into the nailing machine main body, and guiding the nail shaft portion to form a nail passage facing the tail cover; In a nailing machine including a nail guide having a sheet groove for guiding a connecting member of a plastic sheet and a magazine for accommodating nails, a nail head guide formed higher on the nail guide side than the first guide surface is provided on the tail cover. A nail feeder for a nailing machine, wherein a nail head guide is used to support the nail head bottom surface, while the sheet groove is used to support the nail head side surface.