JPH089144B2 - Automatic nailer - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic nailing machine, and more particularly, to a blade of a nailing machine using a nail holding band in which a large number of nails are detachably held at predetermined intervals. The present invention relates to an automatic nailing machine capable of automatically feeding a nail into a nail driving chamber formed in a moving course and advancing a holding band stepwise to drive the nail into an object such as a wall.

BACKGROUND ART Many types of automatic nailing machines have been developed, and as a normal one, a nail holding band holding a large number of nails at predetermined intervals is used, and it is There is an automatic nailing machine that can automatically feed nails into the formed nailing room, advance the nail holding band in stages, and drive nails continuously into objects such as walls. It has become an indispensable tool.

Japanese Examined Patent Publication (Kokoku) No. 43-2198 discloses an example of the nail driving machine. The nailing machine described in this publication uses a nail holding band that detachably holds a large number of nails at predetermined intervals, removes the nail from the nail holding band, and places the nail in the moving path of the blade of the nailing machine. The pushing means for sending to the formed nail driving chamber and the holding band are advanced stepwise to move the holding band holding the nail to the vicinity of the nail driving chamber and discharge the holding band from which the nail is removed. And a holding band guiding means for guiding the nail in such a manner that the nail is continuously driven by pulling the trigger. In this nailing machine, the nail holding band is stored in a magazine provided adjacent to the handle of the nailing machine, and from this magazine, the nail holding band is sent to the nail holding band guiding means to remove the nail. The holding band is configured to be discharged in the lateral direction of the nail driver. Therefore, there is an advantage that the nail driver can be brought close to the wall surface on the side opposite to the handle of the nail driver, which is preferable.

However, the nail holding band used in the above-described nailing machine is integrally formed so as to wrap the nail shaft portion because the nails are continuously provided, and the manufacturing of the nail holding band is difficult. There is a disadvantage. As a solution to this disadvantage, an example in which a nail holding band is formed independently of the nail is described in Japanese Patent Publication No. 46-4040. In the nail holding band described in this publication, a feed hole for automatically feeding the nail is formed on the bottom surface, and a pair of tabs are formed upright on both side edges of the holding band at regular intervals in the longitudinal direction. , Each tab is formed with a small keyhole-shaped notch or hole for receiving the nail shaft portion. Therefore,
You can support each nail by passing its shaft to both tabs,
A large number of nails can be releasably retained at regular intervals, which allows the retaining bands of the nails to be manufactured independently of the nails.

There are many nailing machines using this retaining band,
In the case of a nailing machine using such a holding band, since upright tabs are formed on both side edges of the holding band, the nailing holding band is guided from the handle side magazine to the driving chamber and the nail is driven, After the nail is removed, the retaining band goes straight in the direction opposite to the handle and is ejected, so there is a disadvantage that the retaining band cannot be ejected if there is any obstacle on that side. .

Problems to be Solved by the Invention Therefore, if the nail holding band described in JP-B-46-4040 can be used in the automatic nailing machine described in JP-B-43-2198, the above-mentioned problems also occur. I can solve it,
However, in the nailing machine described in Japanese Patent Publication No. 43-2198,
The nail retaining band described in Japanese Patent Publication No. 46-4040 cannot be used as it is. This is because the nail-holding strip has upright tabs on both sides, so the feeder for the nail-holding strip cannot be used as it is.

Further, in the case of a known nail driving machine, the position of the nail pushing portion of the pushing member forming the nail pushing means is on the axis of the piston cylinder means for reciprocating the pushing member, and the nail holding band is held. It is configured so that the force to separate it from can be increased.

However, in the case of this configuration, since the nail pushing member and the piston cylinder means are arranged in series in the longitudinal direction, the entire feeding device becomes large, and the entire tool becomes large in size, which makes it difficult to handle.

Therefore, it is an object of the present invention to use a retaining band having an upright tab and to discharge the retaining band after removing the nail in a lateral direction of the nailing machine so that the nailing machine is provided on a surface opposite to the handle. An object of the present invention is to provide an automatic nailing machine that can be placed close to an object such as a wall.

A second object of the present invention is to use the holding strip formed with the upright tabs while discharging the holding strip after removing the nail in the lateral direction of the nailing machine so that the nailing machine is provided on the side opposite to the handle. It is an object of the present invention to provide an automatic nailing machine that can be placed close to an object such as a wall on the surface and is smaller than a conventional tool.

In order to achieve this object, the nailing machine according to the present invention has a shaft similar to that described in Japanese Patent Publication No. 46-4040, which has shafts on opposite upright tabs on both side edges. A nail retaining band is used that detachably holds a large number of nails at predetermined intervals by supporting them across the parts. Further, in the automatic nailing machine according to the present invention, similarly to the nailing machine described in Japanese Patent Publication No. Sho 43-2198, the nail holding band guide means is rotatably attached to engage the nail or the holding band to advance the nail. A cylindrical member, a ratchet pawl for rotating the cylindrical member only in one direction, a piston cylinder means for reciprocating the ratchet pawl, and air pressure from the return chamber of the nailer to the piston cylinder means. The push-in means includes a bifurcated push-in member for pushing out the nails passed on both side edges of the retaining band into the nail driving chamber, and the push-in member is connected to the piston of the piston cylinder means. It is designed to work with the ratchet claw.

And, in the automatic nailing machine of the present invention, the position of the pushing portion of the nail of the pushing member is displaced from the axial center of the piston rod of the piston cylinder means, and the piston cylinder means is the axis of the piston rod. The core is arranged so as to be located between the rotation axis of the cylindrical member and the rotation axis of the ratchet pawl.

Action Because of this structure, the nailing machine can be downsized. Further, in this nailing machine, the holding belt formed with the upright tab is used, and the nailing machine is provided with the wall surface on the side opposite to the handle. Can be placed close to.

Examples Examples of the present invention will be described below with reference to the drawings. First, a schematic configuration of the automatic nailing machine according to the present invention will be described with reference to FIGS. 1 and 2.

1 and 2 show the overall schematic view of the automatic nailing machine 1 according to the present invention. Nailer 1 shown in this embodiment
Is suitable for driving flat roof tiles such as slate into the roof. However, it is not limited to the driving target of this nail driver,
Of course, it may be a wall.

A handle 3 is formed on the housing 2 of the nailing machine 1,
A magazine 4 for accommodating a continuous body of nails wound in a coil shape is attached to the handle 3, and is provided together with the nose of the tip portion (the end portion on the lower end side in the drawing) of the nailing machine 1 from the magazine 4. The nail feeding device 5 continuously feeds the nails. At the end of the handle 3 of the housing 2 of the nailer 1,
A nipple 6 for supplying compressed air as a pressure fluid is provided, and compressed air is supplied from here. When the trigger lever 7 is pulled, the compressed air supplied is supplied to the rear surface (upper left upper end in FIG. 1) of the piston of the main piston cylinder means provided in the main body portion of the housing 2, and is attached to the piston. The blade 8 thus abruptly moved downward in the drawing, hits a nail sent from the feeding device 5, and hits an object such as a roof with a tile, for example. After driving, for example, when the trigger lever 7 is released, the blade 8 is returned to the original position, that is, the stationary state, and in this returning process, the feeding device 5 places the next nail in the nail driving chamber of the nose. .

Generally, a nailing machine is provided with a safety mechanism for preventing nail driving unless the tip of the nose is pressed against an object such as a roof. A safety mechanism 10 is also provided at the tip of the nose 9 of the nailing machine 1 according to the present invention, whereby the blade 8 moves even if the trigger lever 7 is pulled unless the tip of the nose 9 is pressed against an object. do not do.
Therefore, accidental shooting of the nail can be prevented. Further, the safety mechanism may be provided with a means for adjusting the nail driving depth by changing the pushing depth.

At the end (upper end in FIG. 1) of the main body of the housing 2, an elastic material that covers the nailing machine 1 and projects outward from the nailing machine housing 2 and has a high friction coefficient. It is possible to provide a ring-shaped member 11 consisting of. This ring-shaped member 11 prevents the nailing machine from sliding down the roof even if the nailing machine 1 is placed on an inclined surface such as a roof part, and the heavy part of the nailing machine body is easily broken such as roof tiles. Since it does not come into contact with, it also prevents damage. The ring-shaped member 11 can be attached at any position, not limited to the illustrated position. For example, it may be provided around the handle 3 or the peripheral portion of the magazine 4, or may be attached to a plurality of places.

Further, in the case of the nailing machine 1 of the present invention, as is clear from FIG. 2, the holding belt 16 after the nail is driven is discharged from the side surface of the feeding device 5 of the nailing machine 1, and as a result, On the side of the nose 9 provided with the safety mechanism 10, an unnecessary holding band is not discharged, so that this surface can be brought sufficiently close to, for example, an adjacent wall surface, and an object to be hammered in such as a roof tile. Even when a nail is driven into the hole, there is an advantage that the driving position can be easily determined.

From FIG. 3 onward, the parts of the nail feeder 5 and the nose 9 which are the most important features of the present invention are shown in detail.
The feeding device 5 and the nose 9 are integrally formed with each other to form the tip side of the nailing machine 1. Therefore, the feeding device 5 and the nose 9 in the following description will not be separately described unless necessary.

The main role of the feeding device 5 is to hold a plurality of nails at predetermined intervals so that a large number of nails can be detachably held by supporting the shafts on opposing upright tabs on both side edges.
-4040 gazette) is sent out from the magazine 4 and each nail is sent to the driving room of the nose 9 as it is. The main role of the nose 9 is to guide the tip of the blade 8 and to remove the tile from the driving room. It is to drive a mounting member such as the above into a roof plate or the like, and the nose 9 is also provided with the safety mechanism 10 as described above.

First, referring to FIG. 3 to FIG. 6, there are shown a left side view, a front view, a right side view of the feeding device 5 and the nose 9 and a plan view seen from the direction of arrow VI in FIG. In addition, in FIG. 4 to FIG. 6, for convenience of explanation, a partially cut-away cross-sectional view is shown. In particular, in FIG. The outline is shown. 7 to 9 show a sectional view taken along the line VII-VII of FIG. 4, a sectional view taken along the line VIII-VIII of FIG. 3, and a sectional view taken along the line IX-IX of FIG. 4, respectively. As is apparent from these drawings, the feeding device 5 and the nose 9 are
Base 14 that is rigidly connected to the tip of housing 2 of nailer 1 (the lower end in the drawing) by screws or the like, and the base
14 and a cover 15 forming a wall surface for guiding the holding band 12 and the nail 13 to the driving chamber.
It is attached to the base body 14 so that it can be opened and closed by.
As shown in FIG. 1, the cover 15 is preferably overlapped by the opening / closing lid of the magazine 4 and locked so that the opening / closing lid cannot be freely opened / closed when the opening / closing lid is closed. It is possible to prevent accidents that accidentally come off while the machine is operating.

In the feeding device 5 of the automatic nailing machine according to the present invention, the shaft portion is passed over and supported by the opposed upright tabs on both side edges, which is similar to that described in JP-B-46-4040. Nail retention band 12 that removably retains a number of nails 13 at intervals
(See FIGS. 2, 5, and 7) is used. For this reason, the feeding device 5 includes a holding band with nails from the magazine 4.
A nail holding band guiding means for pulling out 12 to guide the nail near the driving chamber 18 of the nose 9 and discharging the holding band after removing the nail, and a holding band for the nail 13 guided near the driving chamber. There is provided a pushing means which is detached from 12 and pushed into the driving chamber.
A guide passage 19 for the blade 8 including the driving chamber 18 is formed in the nose 9. When the tip of the nose is directed to the driving position as shown in FIG. Due to the residual air pressure from the return chamber 21 of the piston / cylinder device 20, the nail 13 projects slightly outward from the hole 23 at the tip of the nose. In addition, to prevent the nail 13 from falling, the guide passage
The tip of 19 is tapered. Thus, nail 13
Flat roof tile member (not shown)
The nail can be surely positioned in the hole of the roof tile, and if the nail portion is put in the hole of the roof tile member, the position of the roof tile member can be properly moved by moving the nose of the nailing machine. Can be shifted to a position on the shingles.

The nail holding band guiding means of the feeding device 5 is a rotatably mounted cylindrical member 25 that engages a feed hole formed in the bottom surface of the holding band 12 with nails and advances each nail 13, and the cylindrical member 25. Ratchet pawl 26 for rotating the member 25 in only one direction, a piston cylinder device 27 for reciprocating the ratchet pawl 26, and a passage for supplying air pressure from the return chamber 21 of the nailing machine to the piston cylinder device 27 (Fig. (Not shown).
Due to the rotation of the cylindrical member 25, a plurality of tooth surfaces 28 meshing with the ratchet pawl 26 are formed at regular intervals on the outer peripheral side edges of the cylindrical member. In addition, this ratchet claw
Reference numeral 26 denotes tooth flanks 28, 28 formed on the two side edges of the cylindrical member 25.
It may be formed in a bifurcated shape so as to engage with (see FIG. 4), whereby the cylindrical member 25 is surely rotated and the nail holding band 12 is reliably advanced. A cylindrical member 25 rotated by a ratchet claw for feeding the nail holding band 12.
A plurality of protrusions 29 are provided at regular intervals in the center of the outer peripheral surface of the. The protrusion 29 engages with a feed hole formed on the bottom surface of the nail holding band 12 to advance the nail holding band 12 in the traveling direction. In addition,
The cylindrical member 25 has a rotating shaft 30 rotatably fixed to the nose base 14 as best shown in FIG. Further, the rotary shaft 30 is provided with a knob 32 at the lower end side in FIG. 8, which allows the cylindrical member 25 to be manually rotated when the nail holding band 12 is loaded.

Incidentally, as best shown in FIG. 7, the cover 15 is a space for guiding the nail holding bands 12 holding the nails 13 at equal intervals.
33, which is why the surface of the cover 15 has a first
As shown, a raised portion 33 'is formed. In this way, the raised portion is provided because the nail retaining band 12 has upright tabs on both side edges thereof and the shaft portion is passed to the tabs so that the nail 13 is
This is because a space with a certain height is required to hold the space. Further, on the inside of the cover 15 and on the side facing the cover, a groove is formed in which the bottom surface of the nail holding band 12 moves. The protrusion 29 of the cylindrical member 25 projects into this groove, and thereby the nail holding band 12 is advanced. In addition,
It is preferable that an elastic claw 34 for preventing reverse feeding of the nail holding band 12 is provided on the upstream surface of the groove portion. Furthermore, the cover 15 has a shoulder portion 36 for preventing the backward feeding of the previous nail 13 fed to the driving chamber 19, and is entirely biased by a spring 35 and pivotally supported. It is preferable that a reverse feed prevention member 37 is provided.

The pushing means for pushing the nail 13 from the holding band 12 into the driving chamber 15 includes a bifurcated pushing member 38 for pushing the nail 13 passed to both side edges of the holding band 12 into the nail driving chamber 18, and the pushing member 38 Is connected to the piston 39 of the piston cylinder means 27. More specifically, the pushing member 38 is a piston 39.
When compressed air is sent from the return chamber 21 to the piston silencer device 27, the piston 39 is resisted against the force of the coil spring 40 in the device.
Moves to the right side in FIG. 7, and as a result, the pushing member 38
Also moves from the left side position to the right side in FIG.
It moves to the position that holds the shaft of the next nail sent by the rotation of. When the compressed air is exhausted, the force of the coil spring 40 causes the piston 39 to return to the position shown in FIG.
At the same time, the pushing member 38 is also returned to the position shown in FIG. 7, so that the nail is removed from the holding band and moved to the driving chamber 18.

The pushing member 38 is formed in a bifurcated shape, and in particular, the interval between the leg portions 42, 42 is formed as an interval located outside each tab formed on both side edges of the nail holding band 12, and the nail holding band is formed. The nail 13 held by 12 is pushed into the driving chamber 18. Also,
In order to allow the push-in member 38 to move to the left and right in FIG. 7, the push-in member 38 is formed with an elongated hole 41 through which the rotary shaft 30 of the cylindrical member 25 escapes.

The ratchet pawl 26 is connected so as to interlock with the pushing member 38 connected to the piston 39. The state of this connection is shown in detail in FIG. That is, the ratchet unit 26 is rotatably attached to the push-in member 38 by the rotating shaft 43, and is moved shorter than the moving length of the push-in member 38 (and thus the piston 39) to be a cylindrical member.
The rotation shaft 43 is supported by the long hole 44 of the pushing member 38 so that the rotation shaft 25 can be rotated by a predetermined angle. And
A tension spring 45 is provided between the ratchet pawl 26 and the piston 39.
The ratchet pawl 26 is normally attached to the ratchet pawl 26 by pulling the ratchet pawl 26 so as to rotate clockwise in FIG. 7 when the piston 39 moves leftward. Guaranteed. In addition, the ratchet claw 26,
An extension 46 extending horizontally toward the piston 39 is formed,
The extension portion 46 prevents the ratchet pawl 26 from rotating in the reverse direction by the sliding portion 47 of the pushing member 38.

In the automatic nailing machine of the present invention, the pushing member 38
The position of the nail push-in portion, that is, the leg portion 42, is displaced from the axial center of the piston 39 of the piston cylinder device 27,
Moreover, in the piston / cylinder device 27, the shaft center of the piston 39 is the rotary shaft 30 of the cylindrical member 25 and the rotary shaft 43 of the ratchet pawl 26.
It is arranged to be located between and. By arranging in this way, the cylindrical member 25 and the piston cylinder device 27 do not line up in series, and the pushing force of the nail is maintained sufficiently strong, and the feeding device 5 and thus the nose 9 can be downsized. Can be planned.

FIG. 9 shows an example in which the nail holding band 12 is provided with a check claw 49 for arranging and holding the shaft portion in the guide passage 19 when holding a long nail. The check claw 49 is not essential and may be provided as needed.

Also, as shown in FIGS. 4 and 8, the nail guide passage
The tip of 19 is tapered. However, when the nail is driven by the blade 8, the tip drives the open nail outward. Therefore, the tip of the nose has a pair of chucks 50, 50.
(See FIG. 3). Each chuck 50
Is supported by the rotating shaft 51, and is normally a spring.
It is biased in the closing direction by 52. The chucks are each long so that they can be sufficiently opened by driving nails.

The operation of feeding and driving nails of the nailing machine of the present invention will be described. First, open the lid of the magazine 4 and again the feeding device 5
Open the cover 15 (see Fig. 4). Then, pull out the nail holding band 12 holding the nail 13 from the magazine 4, align the protrusion 29 of the cylindrical member 25 with the feed hole on the bottom surface of the nail holding band 12, and rotate the knob 32 to prevent the leading nail from being fed backward. The shoulder portion 36 of the member 37 is engaged. Cover in this state
Close 15 and close the lid of magazine 4. Now the nail is ready to be driven. The tip of the blue and nose 9 is pressed against the object to activate the trigger lever 7, and when the lever is pulled, the blade 8 is driven, whereby compressed air is supplied to the return chamber 21 of the main piston cylinder device 20. It This compressed air is supplied to the cylinder of the piston / cylinder device 27 of the feeding device 5, moves the piston 39 to the right side in FIG. 7, moves the pushing member 38 to the left side, and delays by the slot 44, and the ratchet. The claw 26 moves to the right and engages with the tooth flank 28 to advance the cylindrical member 25 by one step by a predetermined angle. As a result, the nail 13 moves to a position adjacent to the driving chamber 18.

When the blade 8 returns to its original position after being hit dry,
Compressed air in return chamber is exhausted, coil spring 40
As a result, the piston 39 returns to the position shown in FIG. 7, and the leg portions 42, 42 of the pushing member 38 remove the nail from the holding band 12 and the driving chamber.
Push it into 18. By this pushing, the nail 13 is driven into the driving chamber 18
And then the compressed air from the return chamber 21 is passed through the guide passage 19 to make the tip of the nail 13 project as shown in FIG. This allows the tip of the nail to be used, for example, to find a mounting hole for a roofing material such as a roof tile, and the roof tile or the like can be displaced to an appropriate position while being inserted into the hole. When the piston 39 returns, the ratchet pawl 26 resists the force of the spring 45 and rotates the rotating shaft 43.
It rotates counterclockwise in Fig. 7 around the
It does not engage the tooth flanks 28 of 25 at all, so that no rotational force is exerted on the cylindrical member either.

When the trigger lever 7 is pulled in the state shown in FIG. 4, the blade 8 is driven again, and the tip portion of the nail is slightly projected from the guide passage 19.
13 is driven by the blade 8, and the blade 8 returns after the driving. By this return, the next nail 13 is sent again to the guide passage 19 and the preparation for driving is completed. Thereafter, the nail driving operation is performed in this order. The holding band 12 after the nail 13 is removed is discharged from the side surface of the feeding device 5. This is shown in FIGS. 2 and 7. The above is the description of the feeding and driving operation of the nail of the nail driving machine according to the present invention.

The nose 9 is provided with a safety mechanism 10. This safety mechanism 10 is shown in FIGS. 1, 3, 4 and 8 and is located on the left side of the chuck 50, ie on the opposite side of the magazine 4, as shown in FIGS. It is provided. The safety mechanism 10 includes one movable plate 54 and an arm 55 (see FIG. 1) extending from the movable plate 54 so as to make the trigger action of the trigger lever 7 effective. When pressed against an object, the trigger lever 7 acts effectively. An elongated hole 56 is formed in the movable plate 54 at the position of the rotary shaft 51 so that the movable plate 54 can slide up and down with respect to the rotary shaft 51 of the chuck 50. A spring 57 that urges the movable plate 54 downward is provided between the base 14 and the rising piece 58 of the movable plate 54. The base of the nose is adjusted so that the sliding direction of the movable plate 54 is regulated vertically.
Two pins 59 and 59 are provided on the position 14 that do not hinder the rotation of the chuck 50, and an elongated hole 60 is formed for each pin 59. Further, a rod-shaped body 61 is attached to the spring 57 so that the movable plate can slide up and down and the spring 57 is supported.

A device for adjusting the nail driving depth can be attached to the safety mechanism 10. In this embodiment, the movable plate
A driving depth adjusting device 63 (see FIG. 3) is provided at the tip of 54. As shown in FIG. 3, the driving depth adjusting device is arranged at the tip of the movable plate 54, is fixed to the elongated movable plate 64 that can project from the tip, and is fixed to the lower end of the movable plate 54 of the safety mechanism. Guide plate 65 having a substantially semicircular shape that holds the movable plate 64 of the movable plate 64 slidably in the vertical direction of the nailing machine 1, and is rotatably attached to the guide plate, and is fitted into the elongated hole of the movable plate 64. It is composed of a rotary cam member 66 that adjusts the amount of protrusion of the movable plate 64 by rotating the movable plate 64, and a lever 67 that rotates the rotary cam member 66.

In the driving depth adjusting device 63 having such a configuration, as shown in FIG. 3, when the lever 67 is swung to the left or right, the projecting amount of the movable plate 64 changes and the driving length of the blade 8 relative to the nail 13 is changed. Change, which adjusts the nail driving depth. More specifically, when the lever 67 is rotated counterclockwise, the cam portion of the rotary cam member 66 moves the movable plate 64 upward,
The amount of protrusion of the movable plate 64 is reduced, and the driving depth of the nail 13 is increased. On the contrary, when the lever 67 is turned clockwise, the protrusion amount of the movable plate 64 increases and the driving depth of the nail 13 becomes shallow. The lever
In order to measure the amount of protrusion of the movable plate 64 with respect to the rotation angle of 67, it is preferable to provide a protrusion on the lever and to provide a plurality of clip holes 68 on the surface of the guide plate 65 to engage with the protrusion of the lever. By this, the turning amount of the lever 67 is regulated, and this turning amount can be replaced with a scale of the driving depth of the movable plate 64.

As shown in FIG. 4, in the present embodiment, a guide plate 69 that guides the tip of the nail 13 is provided on the side of the tip of the back surface of the movable plate 54 of the safety mechanism. With this guide plate 69, the tip of the nail 13 is guided straight from the nail guide passage 19 of the nose,
The driving failure of the nail 13 can be minimized. The guide plate 69 is preferably made of an elongated leaf spring material, and the tip portion thereof is bent toward the tip portion of the nail 13 and elastically engages with the nail 13 as shown in FIG. The head of the nail 13 can pass through. Further, it is preferable that a triangular notch is formed in the engaging portion so that the tip end portion of the nail shaft portion protruding before driving is guided by the notch.

Further, as shown in FIGS. 5 and 6, an extension arm 70 extends downward at the tip of the base 14 which constitutes the feeding device 5 and the nose 9 of the nailing machine of this embodiment. The arm 70 has a ball that makes rolling contact with an object such as a tile or a roof.
71 is provided. With this ball 71, for example, even if the object that is easily broken due to contact with the tip of the nose of the nailing machine, such as a roof tile, can be easily positioned without breaking or breaking it. The ball 70 may be replaced by a roller, and the position of the ball 70 is not limited to the position shown in the drawing, and may be provided at the tip of the nose, for example.

EFFECTS OF THE INVENTION According to the present invention, a nail holding band similar to that described in JP-B-46-4040 can be used, and JP-B-43-2198.
Similar to the nailing machine described in Japanese Patent Publication No. JP-A-2003-264, the nail retaining band is configured to be discharged from the side surface of the nailing machine, and the position of the nail pushing portion of the pushing member is the piston of the piston cylinder means of the pushing member. Since the piston cylinder means is displaced from the axis of the rod and the axis of the piston is located between the rotation axis of the cylindrical member for advancing the holding band and the rotation axis of the ratchet pawl, The feeding device of the nailing machine can be miniaturized, and thereby, the entire nailing machine can be miniaturized, and in this nailing machine, by using the retaining band formed with the upright tab, The nail driver can be placed sufficiently close to the wall surface on the side opposite to the handle so that the nail can be driven into the wall, and on the nose surface on the side opposite to the magazine and handle. Since there is no holding belt discharge passage, It becomes also easy to explore holes roofing like.

[Brief description of drawings]

1 is a front view of a nailing machine according to the present invention, FIG. 2 is a plan view of the nailing machine, FIG. 3 is a left side view of a feeding device and a nose of the nailing machine of FIG. 1, and FIG. Is a front view showing the feeder and nose of FIG. 3 with a cover removed and a part thereof broken, FIG. 5 is a right side view of the feeder and nose of FIG. 3 partially broken, and FIG. FIG. 4 is a partially cutaway plan view seen from the direction of arrow VI, FIG. 7 is a sectional view taken along line VII-VII of FIG. 4, and FIG.
9 is a sectional view taken along the line VIII-VIII in FIG. 9, and FIG. 9 is a sectional view taken along the line IX-IX in FIG. Explanation of symbols 1 ... Nail driver, 2 ... Housing, 3 ... Handle, 4 ... Magazine, 5 ... Feeding device, 7 ... Trigger lever, 8 ... Blade, 9 ... Nose, 10 ... Safety mechanism, 11 …… Protective member 12 …… Holding band, 13 …… Nail 14 …… Base body, 15 …… Cover 16 …… Hinge, 18 …… Driving chamber 19 …… Guide passage, 21 …… Return chamber 25 …… Cylinder -Shaped member, 26-ratchet pawl 27-piston cylinder device 29-projection, 32-knob 34-elastic pawl, 35-spring 37-reverse feed prevention member, 38-pushing member 39-piston , 40 ...... Coil spring 45 ...... Extension spring, 46 ...... Extension part 47 ...... Sliding part, 49 ...... Check claw 50 ...... Chuck, 51 ...... Rotating shaft 52 ...... Spring, 54 ...... Movable plate 55 …… Arm, 63 …… Driving depth adjusting device 64 …… Movable plate, 65 …… Guide plate 66 …… Cam member, 67 …… Lever 69 …… Guide plate, 70… ... extension arm 71 ... ball

Claims (6)

[Claims] 1. A nail formed by using a retaining band of a nail that removably retains a large number of nails at predetermined intervals, removes the nail from the retaining band, and forms the nail in the moving path of a blade of a nailing machine. Pushing means to be sent to the driving room and the holding band are advanced in stages,
There is provided an automatic nail feeding device including: a holding band that holds a nail, and a holding band guiding means that guides the holding band from which the nail has been removed so as to discharge the holding band in a lateral direction. In the automatic nailing machine, the holding band of the nail has upright tabs on both side edges, and by supporting the upright tabs by facing the shafts, a large number of nails are detachably held at predetermined intervals. The holding band guide means includes a rotatably mounted cylindrical member that engages with the holding band to advance the nail, a ratchet pawl that rotates the cylindrical member only in one direction, and the ratchet pawl. The piston cylinder means for reciprocating motion, and means for supplying air pressure from the return chamber of the nailing machine to the piston cylinder means, the pushing means, the nail passed to both side edges of the holding band into the nail driving chamber. Extruded bifurcated shape The push-in member is connected to the piston of the piston-cylinder means and interlocks with the ratchet pawl, and the position of the push-in portion of the nail of the push-in member is the axis of the piston rod of the piston-cylinder means. It is offset from the core, and the piston cylinder means is arranged such that the axis center of the piston rod is located between the rotation axis of the cylindrical member and the rotation axis of the ratchet pawl. Automatic nailer. 2. A knob is provided on the outside of the cylindrical member,
The nailing machine according to claim 1, wherein a retaining band with nails can be initially loaded by rotating the knob. 3. A nose of the nailing machine and a tip of the feeding device are provided with a roller or a ball that rolls on the surface of the object into which the nail is driven, and guides the tip of the nailing machine along the surface of the object. The nailing machine according to claim 1, wherein 4. The safety mechanism is provided on the nose of the nailing machine on the side opposite to the magazine, and the nailing depth adjusting device is provided on the safety mechanism. The listed nailer. 5. The nail which is pushed into the driving chamber is configured so as to partially project from the tip of the nose by the weight of the nail or by the pressure applied from the return chamber of the nailing machine. The nailing machine according to claim 1. 6. The nailing machine according to claim 1, wherein the ratchet pawl is connected to the piston of the piston cylinder means with a certain amount of play.