JPS6048313B2 - nail gun - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses pressurized gas as the motive force to reciprocate the striking piston of a striking piston/cylinder mechanism, and uses a rod-shaped driver rigidly connected to the striking piston to drive the nails in the connected nails. This relates to a nailing machine that continuously drives nails into a material to be driven.

Conventionally, in a nailing machine that uses a connecting nail formed by connecting a large number of long nails with a connecting wire, the connecting nail is wound in a spiral shape and is installed away from the nose from which the nails are driven. The nails are stored in a cylindrical nail magazine, and the nails are driven out one by one from the nose while the connected nails are fed from the nail magazine toward the nose member along the nail guide plate by the nail feeding device. I am typing.

As described above, in conventional nailing machines, since the nail magazine is located away from the nose, the connected nails have to be pulled out over a long distance, and the overall structure is not compact.

The purpose of the present invention is to make the entire nailing machine compact,
In addition, it is an object of the present invention to provide a new nailing machine in which the connecting nail has a short pull-out distance.

The first invention to achieve this object is a striking piston, which has a nose for driving nails on one end side of a striking cylinder, and integrally connects a driver that reciprocates within a driver guide hole of this nose. is slidably and tightly fitted into the striking cylinder, and a connecting nail connected in a long shape by a connecting member is fed into the driver guide hole as one nail, and pressurized gas is supplied to the striking piston. In a nailing machine that drives the nail into a material to be driven by a driver under the pressure of Features. The second invention has a nose for driving a nail at one end of the striking cylinder, and a striking piston integrally coupled with a driver that reciprocates in a driver guide hole of this nose is installed in the striking cylinder. A connecting nail, which is slidably and tightly fitted and is connected in a long shape by a connecting member into the driver guide hole, is fed as one nail, and the hitting piston receives the pressure of the pressurized gas and the above-mentioned A nail gun for driving nails into a material to be driven by a driver is provided with a nail magazine section around the nose for storing the connected nails in a spiral shape surrounding the nose. A nail feeding member movable so as to advance toward the nail feeding hole is arranged near the nail feeding hole, and the nail feeding member sequentially guides the driver starting from the nail located at the center of the spiral of the connected nails. It is characterized by being fed into the hole. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 4.

As shown in the first embodiment shown in FIG. 1, in the nailing machine 1 of the present invention, a nail magazine section 2, a nail feeding turret 6, and a split nose section 7 for driving nails are integrated. A closing mechanism 8 is provided at the lower end of the body 3, and the nail magazine section 2 is configured to surround the split nose section 7. A percussion cylinder 4 is built into the body 3 in the same manner as in a conventional nailer, and a percussion piston (not shown) is slidably and tightly fitted into the percussion cylinder 4.

A rod-shaped driver 5 is rigidly coupled to this striking piston, and this driver 5 is reciprocated in the vertical direction within a driver guide hole 9 that passes through the split nose portion 7 in the central axis direction. The driving method for the driver 5 may be any conventionally commonly used method. The above nail driving mechanism 8
The nail magazine section 2 has a generally cylindrical shape with an upper cover and a lower cover, and is divided into an upper nail magazine section 10 and a lower nail magazine section 11.

The upper nail magazine section 10 is connected to the body 3 by a fixing means (not shown), and the lower nail magazine section 11
is directed downward by a hinge section 12 provided on the right end side of the nail magazine section 2 with respect to the upper nail magazine section 10.
That is, it can be rotated clockwise in FIG. A latching member 13 is provided at one location of the nail magazine section 2 on the opposite side of the hinge section 12, and the latching member 13 allows the lower nail magazine section 11 to be hung on the lower end side of the upper nail magazine section 10 with the lid closed. be stopped. Upper nail magazine section 1
The top plate portion 14 formed on the upper part of the impact cylinder 4
and the bottom of the blowback air chamber 15 formed around the impact cylinder 4,
The upper inner wall surface 16 of the top plate portion 14 has a taper that gradually decreases toward the split nose portion 7.

The taper of this upper inner wall surface 16 is such that the enlarged diameter head portions 18 of each nail 17 constituting the connecting nail 21 are mutually connected to each other.
This corresponds to winding the entire connecting nail 21 in a spiral shape while gradually lowering the enlarged diameter head portion 18 toward the center of the spiral so as not to collide with the side surfaces of the connecting nails 8. Upper inner wall surface 1
6 has a portion adjacent to the driver guide hole 9 (the first
In the figure, a horizontal bearing surface 19 is provided on the right side of the driver guide hole 9).

On the other hand, corresponding to this bearing surface 19, the nail magazine section 2
A bearing portion 22 that protrudes rightward in FIG. 1 from the upper nose portion 20 of the split nose portion 7 is provided inside and at a lower portion thereof. The nail feeding turret 6 is rotatably supported by the bearing surface 19 and the bearing portion 22. This nail feed turret 6 is rotationally driven rightward in FIG. Send it in. As shown in FIG. 1, the split nose part 7 is composed of an upper nose part 20 and a lower nose part 23, and the part of the upper nose part 20 provided with the nail feeding hole 24 is connected to this part as shown in FIG. The upper nose portion 20 has a substantially semicircular shape, and a portion of the upper nose portion 20 located below the nail feeding turret 6 has a completely cylindrical shape. The lower nose part 23 is supported by a conical nose support part 11a protruding from the lower nail magazine part 11 so as to be aligned coaxially with the upper nose part 20. The lower nose portion 23 has a completely cylindrical shape. As shown in FIG. 2, the nail feeding turret 6 has a five-petal shape as a whole and includes five convex portions 25 and five concave portions 26.

These convex portions 25 and concave portions 26 are continuous through a smooth curved surface. Two connecting wire kite recesses 28 and 29 are provided on the side surface of the convex portion 25 at regular intervals vertically, into which the connecting wire 27 of the continuous nail 21 engages. FIG. 2 is a bottom sectional view of the upper nail magazine section 10 viewed from the bottom side with the lower nail magazine section 11 opened in FIG.

As shown in FIG. 2, a substantially cylindrical nail feeding guide 30 is disposed around the upper nose portion 20 and the nail feeding turret 6. As shown in FIG.

In FIG. 1, the nail feeding guide 30 is shown removed. A nail feeding slit 31 is formed in a part of the nail feeding guide 30 (the right end side of the nail feeding guide 30 in FIG. 2). One end side 32 of the nail feeding guide 30 forming this nail feeding slit 31
(in Fig. 2, the upper right end of the nail feeding guide 30) and the other end side 33 (in Fig. 2, the lower right end of the nail feeding guide 30) opposite to this one end side 32 are slightly misaligned. The state is facing each other. That is, the other end side 33 is slightly bent toward the inside of the nail feeding guide 30. The nail 17 is fed into the nail feed guide 30 along this bent outer surface 33a on the other end side, and the enlarged diameter head portion 18 of the nail 17 is bitten into an appropriate recess 26 of the nail feed turret 6. The nail feeding turret 6 is rotated counterclockwise in FIG.
7 and into the upper nose portion 20 in sequence. Connecting nail 21
When the nail 17 located at the head of the nail is loaded into the upper nose portion 20 and ready for nail driving, the driver guide hole 9 of the upper nose portion 20 and one recess 26 of the nail feeding turret 6 are connected. An almost complete ring is formed.

3 and 4 show the main parts of the second embodiment.

FIG. 3 shows the nail feeding guide 42a shown in FIG. 4 removed. In the second embodiment, as shown in FIG. 4, a split nose portion 40 in which a driver guide hole 41 is formed, a non-return claw mechanism 42, and a nail feed claw 43 are provided inside a substantially cylindrical nail feed guide 42a. It is arranged. The split nose 40 has an upper nose 44 with a nail feed hole 45 that is less open than the split nose 7 of the first embodiment.

The non-return claw mechanism 4 is adjacent to one end side 46 of this nail feeding hole 45 (lower right end side of the upper nose portion 44 in FIG. 4).
2 is disposed in a direction extending straight from the nail feed hole 45, and is pivotably supported adjacent to the other end side 47 of the nail feed hole 45 (the right upper end side of the upper nose portion 44 in FIG. 4). A nail feeding pawl 43 is provided. The non-return claw mechanism 42 includes a non-return claw casing 48 fixed to an upper nail magazine section (not shown), and a non-return claw 50 that is resiliently supported by the non-return claw casing 48 via a compression coil spring 49 so as to be pivotable. It consists of

This non-return claw 50 is the same as that built into a conventional nail gun. On the other hand, the nail feed pawl 43 includes a nail feed pawl main body portion 51 which has a substantially arcuate shape and is convex toward the non-return pawl 50, and three guide pawl portions 5 provided on the outer circumferential side of the nail feed pawl main body portion 51.
It consists of 2,53 and 54.

The nail feed claw 43 is attached to a pivot arm 5 supported by a pivot shaft 55.
6, and is pivoted clockwise or counterclockwise in FIG. 4 by this pivot arm 56. The kite claw portion 52
is located immediately behind the upper nose portion 44 so as to partially close the nail feed hole 45 during nail driving, and
The nail 17 to be driven next is bitten between the guide claw part 52 and the guide claw part 53 at the next position. The pivot arm 56 has one end 57 located on the opposite side of the nail feed claw body 51 with respect to the pivot shaft 55 and is reciprocated by a piston rod 60 connected to a nail feed piston 59 of a nail feed piston/cylinder mechanism 58. As a result, it is pivoted reciprocally about the pivot shaft 55.

The nail feed piston/cylinder mechanism 58 is fixedly provided to an upper nail magazine section (not shown).

As described above, according to the present invention, the nail magazine section that stores the connecting nails in a spiral shape is provided around the nose section from which the nails are driven, so that the pulling distance of the connecting nails can be reduced. It is short and has the effect of making the overall configuration of the nailing machine more compact.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway longitudinal cross-sectional view showing the nail driving mechanism of a nail gun according to a first embodiment of the present invention, and FIG. 2 shows an upper nail magazine section shown in FIG. 3 is a vertical sectional view showing the nail driving mechanism of a nail gun according to the second embodiment of the present invention, and FIG. 4 is a bottom sectional view of the nail driving mechanism in FIG. It is an A-line sectional view. 1... Nailer, 2... Nail magazine section, 4... Impact cylinder, 5...
Driver, 6 ... Nail feed turret, 7, 4
0...Split nose part, 9, 41...Driver guide hole, 17...Nail, 21...
・Connecting nail, 24, 45...Nail feeding hole, 27
...Connecting wire, 43...Nail feeding claw.

Claims (1)

[Scope of Claims] 1. A striking piston having a nose for driving a nail at one end of the striking cylinder and integrally coupled with a driver that reciprocates in a driver guide hole of this nose is inserted into the striking cylinder. Connecting nails, which are slidably and tightly fitted into the driver guide hole and are connected in a long shape by a connecting member, are fed one by one into the driver guide hole, and the impact piston receives the pressure of the pressurized gas. In a device for driving nails into a material to be driven by a driver, there is a cylindrical nail feeding guide placed around the nose, and a spiral winding radially outward from the guide. The cylindrical nail feeding guide is provided with a magazine section including a storage section for storing the connected nails, and the cylindrical nail feeding guide has an inner circumferential end portion of the spiral connecting nail pulled out from the storage section toward the center of the guide. A nailing machine characterized by having a nail feeding slit formed therein. 2. A striking piston having a nose for driving a nail at one end of the striking cylinder and integrally coupled with a driver that reciprocates within the driver guide hole of this nose is slidably and tightly fitted into the striking cylinder. On the other hand, one connecting nail connected in a long shape by a connecting member is inserted into the driver guide hole.
A cylinder is placed around the nose of the nailing machine which feeds the nails one by one and drives the nails into the material to be driven by a driver under the pressure of pressurized gas from the striking piston. The cylindrical nail feeding guide is provided with a magazine portion including a nail feeding guide having a shape of 100 mm and a housing portion for accommodating connecting nails wound spirally from the guide in a radial outward direction. A nail feeding slit is formed for pulling out the inner circumferential end of the shaped connecting nail from the housing part toward the center of the guide, and the space between the nail feeding hole opened in the nose and the nail feeding slit is formed. is provided with a movable nail feeding member so as to advance the connecting nails toward the nail feeding hole, and the nail feeding member sequentially moves the nails from the center of the spiral of the connecting nails to the driver guide hole. A nailing machine characterized by being designed to feed the nail into the inside.