JPS605431B2 - nail gun - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nailing machine that reciprocates a nailing driver and drives connected nails one by one into a material to be driven by the nailing driver.

Conventionally, a large number of nails were lined up at regular intervals,
In a nailing machine that uses connecting nails connected by connecting wires, the connecting nails are wound in a spiral shape and placed in a cylindrical nail magazine located away from the nose section from which the nails are driven. The connected nails are fed out from the stored nail magazine toward the nose member along the nail guide plate by the nail feeding device, and the nails are driven one by one from the nose member and driven into the material to be driven. .

In this way, in conventional nailing machines, the nail magazine is fixedly installed on the nailing machine apart from the nose member, so the connecting nails have to be pulled out long and the overall structure of the nailing machine is not compact. Additionally, there is a drawback that it takes time and effort to attach the connecting nails to the nail magazine.

SUMMARY OF THE INVENTION An object of the present invention is to provide a nailing machine which has a short pull-out distance for connecting nails and is easy to operate by setting a nail cassette containing spirally wound connecting nails in advance to a state where nails can be driven. That's true.

The first invention to achieve this object is a connecting nail in which a large number of nails are lined up at regular intervals and connected by a connecting member in a nose member in which a rod-shaped nailing driver is reciprocated. A guide groove for phase alignment is provided on the outer peripheral surface of the nose cover surrounding the nose member, and the connecting nails are wound in a spiral shape in advance and stored. By moving the nail cassette so that the partially exposed part of the nail cassette is aligned with the phasing guide book, the nail cassette is placed in a predetermined position on the ground cover and the connecting nail is set in a state where it can be driven. The summary is what we did. In the second invention, a rod-shaped nail driver drives a reciprocating nose member into which a connecting nail consisting of a large number of nails lined up at regular intervals and connected by a connecting member is fed into the nose member. A guide groove for phasing is provided on the outer peripheral surface of the nose cover that surrounds the nose member from which nails are driven by a driver. In a nailing machine in which the nail cassette is moved along the above-mentioned phase alignment guide groove, the nail cassette is placed in a predetermined position on the nose cover, and the connecting nail is set in a state where it can be driven. The nose member is attached. A locking pawl is provided on the body side of the nailing machine, and the nail cassette is fixed at a predetermined position on the nose cover by the hooking pawl. , a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

As shown in FIG. 1, the nailing machine i of the present invention has a striking cylinder 3 built into the body 2, and a striking piston (not shown) is slidably left in the striking cylinder 3. This percussion piston may be driven by any method commonly used in the past. A rod-shaped nailing driver 4 is rigidly connected to this percussion piston.A body 2 and a percussion cylinder 3 The interior is closed by a bottom plate 5, and a cylindrical nose cover 6 with a portion flattened vertically projects downward from the center of the bottom plate 5.

Around the installation position of the nose cover 6, four latching claws 7 having an L-shaped cross section are provided to protrude downward from a bottom plate 5 fixed to the body 2. A plate spring 7a close to this latching claw 7 is used to ensure that a nail cassette 19, which will be described later, is latched.
is provided. As shown in FIGS. 3 and 4, a nose portion 8 is disposed inside the nose cover 6 in parallel to the axis of the nose cover 6, and a nose top 9 located at the lower end of the nose member 8 is disposed inside the nose cover 6. It protrudes further downward from the nose cover 6.

A nail feeding turret 10 is rotatably supported within the nose cover 6 adjacent to the nose member 8. One nail feeding turret is formed in the shape of a flower with eight petals, and has eight protrusions I1 and grooves 12, and these protrusions 11 and grooves 12
and are continuous by a smooth curved surface. The nail feeding turret 10 is rotationally driven in synchronization with the movement of the striking stroke of the nail 13 by the nailing driver 4 by a pneumatically driven actuator (not shown) or a mechanical means interlocked with a contact arm (not shown). Inside the nose cover 6 and on the side of the nose section 8, there is a nail cassette device guide having a shape along the inner peripheral surface of the nose cover 6 and facing the nail feeding turret 10 and having a core shape. 1
4 is fixedly disposed on the bottom plate 5.

The nail cassette device guide 14 is formed into a bare shape that gradually becomes wider from one end 14a on the side far from the nose member 8 to an end 14b on the side closer to the nose member 8. The nail cassette device guide 14 is set so that the gap between the nail cassette device guide 14 and the nail feeding turret 10 becomes gradually narrower as the nail cassette device guide 14 approaches the nose member 8 as a whole. It functions to smoothly feed the nail into the nail feeding hole 15 drilled on the side.

A phase alignment guide groove 16 is provided on the outer peripheral surface of the nose cover 6.
is formed. This phase alignment guide groove 16 includes a guide groove portion 16a with a guide groove that closes in a fan shape toward the nose stop 9 of the nose member 8, an axial guide groove portion 16b that rises in the axial direction of the nose cover 6 from this assembly guide groove portion 16a, and This axial guide groove 16M is continuous with a circumferential guide groove 16c formed in the circumferential direction of the nose cover 6.
In the nose cover 6, as shown in FIG.
A flattened nail insertion guide surface 17 is formed on the right side of 6b. This nail insertion guide surface 17 is connected to a nail 13 located at the leading end of a connecting nail 18 pulled out from a nail cassette 19 storing connecting nails 18 connected by a connecting wire 18a in a spirally wound state.
A, 13b, etc. are engaged with the nail feeding turret 10'. The nail cassette 19 attached around the nose cover 6 is made of synthetic resin and has a wide cylindrical shape with an upper lid part 20 having an inclined inner surface and a lower lid part 21 having an inclined inner surface.

On the upper surface of the upper lid part 20, four L-shaped hooking pieces 22 are projecting upward in the circumferential direction of the upper lid part 20 at intervals of 900 mm. These latching pieces 22 are latched to latching claws 7 provided on the bottom plate 5 of the nailing machine 1. Upper lid part 20, lower lid part 21
In the space formed between the peripheral wall 23 of the nail cassette 19 and the nail cassette 19, the connecting nail 18 is wound spirally and stored.

The connecting nail 18 can be stored in the nail cassette 19 by removing the upper lid part 20 or the lower lid part 21. The upper inner wall surface 20a of the upper lid part 20 is tapered downward toward the nose member 8.

The upper inner wall surface 20a is tapered while gradually lowering the broad diameter head portion 24 toward the center of the spiral so that the nails 13 constituting the connecting nail 18 do not collide with the side surfaces of the enlarged diameter head portions 24. This corresponds to winding the entire connecting nail 18 in a spiral shape. The lower inner wall surface 25 of the lower lid part 21 is also tapered downward toward the nose member 8.
Thereby, the lower lid part 21 can completely support all the toes of the connecting nails 18. At the center of the nail cassette 19, a substantially cylindrical nail feeding guide 26 that accommodates the nose member 8, the nail feeding turret 10, and the nail cassette mounting guide 14 is erected.

A phasing projection 26a is provided on the inner surface and upper part of the nail feeding guide 26. As shown in FIGS. 4 and 6, a part of this nail feeding guide 26 is provided with a nail 13a located at the center of the spiral in the connecting nail 18 or a nail feeding guide 26 for feeding the nail 13a into the inside of the nail feeding guide 26. An entry slit 27 is formed in the vertical direction of the nail feed guide 26. One end side 28a of the nail feeding guide 26 forming this nail feeding slit 27 (in FIG. 4, the nail feeding guide 26
(upper right end) has a guide mounting piece 29 bent toward the inside of the nail feeding guide 26.

One end 28a of the nail feed guide 26 performs a hinge action due to the elasticity of the synthetic resin. The pond end side 28b of the nail feeding guide 26 is located opposite to the one end side 28a of the nail feeding guide 26, and the outer surface 28c of the other end side 28b is smoothed so as to fit slightly inside the nail feeding guide 26. It has a fallen shape.

A nail hooking piece 30 protrudes into the nail feeding guide 26 from the inner surface of the guide mounting piece 29, and protrudes in a shape that is diagonal to the guide mounting piece 29 and widens toward the nose member 8. It is set up.

When the connecting nails 18 are spirally wound and stored in the nail cassette 19, the nail 13a located at the head of the connecting nails 18 is held by the nail hooking piece 30.

This state is shown in FIG. Next, a description will be given of an operation for setting the connected nail 18 in the nail gun 1 of the present invention so that it can be driven continuously.

First, the nail cassette 19 storing the connecting nails 18 in a spiral state is assembled to the nose cover 6 from below, and the phasing protrusion 26a is inserted into the phasing guide groove 16.
When the nail cassette 19 is pushed up along the nose cover 6, the phasing protrusion 26a is guided to the axial guide groove 16b, and then to the circumferential guide groove 16c. Then, the nail cassette 19 is rotated around the nose cover 6. As a result, the crab retaining piece 22 of the nail cassette 19 is retained on the retaining claw 7 of the bottom plate 5. While the nail cassette 19 is being rotated, the guide mounting piece 29 is attached to the nail cassette mounting guide 14.
The nail cassette is first guided by one end 14a of the nail cassette mounting guide 14, and is completely mounted in contact with the inner surface 14c of the nail cassette mounting guide 14 while being pushed open.

Through this mounting operation, the guide mounting piece 29 places the leading nail 13a of the connecting nails 18 between the convex strip 11 of the nail feeding turret 10 and the guide mounting piece 29 that has been pushed out by the nail cassette mounting guide 14. The nail feeding turret 10 is pivoted while being held, and the nail is fed into the inside of the nose member 8. Due to the counterclockwise rotation of the nail feed turret 10, the second nail 13b from the top is moved by the guide attachment piece 29,
It is held between the concave strip 12 of the nail feeding turret 10 and the nail hooking piece 30, and is held in a state ready for nail feeding. As described above, according to the present invention, only a short time is required to assemble the connecting nail to the nail gun, and moreover, the phasing guide groove allows the connecting nail to be easily set in a ready-to-drive state.

[Brief explanation of the drawing]

FIG. 1 is a main vertical sectional view of a nailing machine of the present invention with a nail cassette installed, FIG. 2 is a plan view of the nail cassette,
Fig. 3 is a bottom view of the above nailing machine, Fig. 4 is a sectional view taken along the line A-A in Fig. 1, Fig. 5 is an enlarged view of the vicinity of the hook for attaching the nail cassette, and Fig. 6 is the B- in Figure 2
It is a sectional view taken along the B line. DESCRIPTION OF SYMBOLS 1... Nailing machine, 2... Body, 4... Nailing driver, 6... Nose cover, 7... Latching claw, 8... Nose member, 13, 13a, 13b...・Nail, 16...
Guide groove for phase alignment, 18... Connecting nail, 18a... Connecting wire, 19... Nail cassette, 26a... Protrusion for phase alignment. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. A nose member into which a rod-shaped nailing driver is reciprocally driven, in which a large number of nails are lined up at regular intervals and connecting nails made of connecting material are fed into the nose member, and the nails are driven by the nailing driver. A phasing guide groove is provided on the outer circumferential surface of the nose cover that surrounds the nail cassette, and a part of the nail cassette, in which the connecting nails have been previously wound in a spiral manner and partially exposed, is placed along the phasing guide groove. In a nailing machine in which the nail cassette is moved to a predetermined position on the nose cover and the connecting nail can be driven, the body side of the nailing machine to which the nose member is attached. The nail cassette is provided with a latching claw protruding in the direction in which the nose portion projects, and the nail cassette is provided with a phasing projection guided by the phasing guide groove and a latching piece that is latched onto the latching claw. A nailer characterized by: