JPH0413101Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a fastener for sending a headed fastener having a head of a nail, pin, screw, etc. held in a connecting band to the driving part of a nailing machine. Regarding the feeding device.

(Prior art and its problems) A large number of holding pieces are jutted out from the upper and lower edges of a long synthetic resin band-like member in pairs, one above the other, in the same direction at right angles, and a headed fastener can be separated from each pair of holding pieces. As shown in U.S. Pat. No. 3,543,987, a fastener feeding device that feeds a fastener to a driving section of a nailing machine using a connecting band that is held in place has a mechanism that moves a feed member called a feed pawl in the fastener feeding direction. At that time, there are some types in which the fastener is fed by engaging with an engagement hole formed in the band-like member, and some types are fed by being directly engaged with the shaft of the fastener. For these feeders,
At the time of driving, the fastener is driven out from the connecting band, but the connecting band remains in the same position, and at the time of feeding, it is passed through and sent out from the outlet formed in the driving part. This part of the connecting band that has been driven in will get in the way of driving, so it is cut off to an appropriate length.
By the way, I put a few fasteners on the rear end of the connecting band.
When only the main part is left, the driven part of the connecting band passes through the driving part and extends beyond it, and the connecting band guide path alone cannot support the specified feeding posture, and the overall weight is uneven, so the connecting band is connected. The entire band may be tilted. If the connecting band is tilted, the fastener may also be tilted at the driving portion, and the head may be deviated from a predetermined position in a system in which the feed member engages with the engagement hole or the shaft portion to feed the fastener. If you drive the nailer at this time,
The tip of the driving member cannot hit the head of the fastener, leading to dry driving or damage to the nailer.

(Technical Problems of the Invention) The present invention solves the above-mentioned drawbacks and provides a fastener feeding device capable of stably and reliably feeding a headed fastener to a predetermined position, especially to the end of a connecting band. This will be a major issue.

(Means for Solving the Problems) In order to solve the above problems, the fastener feeding device of the nailing machine according to the present invention has a large number of holding pieces, one pair each on the top and bottom, from the top and bottom edges of a long synthetic resin band member. A connecting band is formed by forming a gap between a pair of upper and lower holding pieces that extend in the same direction at right angles and are adjacent to each other, and each pair of holding pieces separably holds a headed fastener; a fastener feeding device comprising a fastener feeding member that reciprocates a distance corresponding to the connection interval of the fasteners of the connecting band along the side of a guide path that guides the nail driving path of the driving machine; The member is provided with a pair of upper and lower feed claws that can enter the gap formed between the adjacent holding pieces of the upper and lower parts of the connecting band, and the upper feed claw has a front end in the fastener feeding direction of the upper feed claw. The present invention is characterized in that a head pressing portion is formed that can engage with the head of the fastener held by the holding piece.

(Effect of the invention) As described above, according to the fastener feeding device of the present invention, when feeding the fastener, the head pressing portion of the feeding pawl on the upper part of the fastener feeding member engages with the head of the fastener and moves it in the feeding direction. This pressure ensures that the fastener is fed into the driving path. In this way, even if the number of fasteners remaining in the connecting band is low, the head can be forcibly fed to the predetermined position in the driving path, so there is no possibility of poor fastener feeding, and the nailer damage etc. can be prevented.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 indicates a cylindrical nose portion provided at the tip of the nailer main body 1a. This nose part 1
has a driving passage 2 and a guide passage 3 formed on the side of the driving passage 2, and when the driver member 4 provided facing the driving passage 2 slides when the nailing machine is driven. , a blow is applied to the fastener 5 guided and loaded into the driving path 2 from the guide path 3, and the fastener 5 is driven along the driving path 2 toward the workpiece.

The fastener 5 is connected to a connecting band 6. As shown in FIG. 3, the connecting band 6 includes a large number of holding pieces 6 from both upper and lower edges of a long synthetic resin band member 6a.
A pair of upper and lower retaining pieces 6b and 6b are extended at right angles in the same direction, and a retaining hole 7 for retaining a headed fastener 5 is formed in each pair of retaining pieces 6b and 6b. A gap is formed between them. The fastener 5 is fed by the fastener feeding device A from right to left in FIGS. 1 and 2 along a guide path 3 formed through the side of the driving path 2. Then, due to the driving operation of the driver member 4, the fastener 5 in the driving passage 2 is detached from the holding hole 7 and driven into the workpiece, and the remaining connecting band 6 is transferred to the fastener feeding device A.
The fastener 5 is sent to the left side by one fastener 5, and a new fastener is placed in the guide passage 3.

The fastener feeding device A uses a cylinder device 11 to move the fastener feeding member 10 provided along the side of a guide path 3 that guides the connecting band 6 to the driving path 2 of the nailing machine main body 1a. The fastener feeding member 10 is engaged with the head portion 5a of the fastener 5 connected to the connecting band 6 and sent. That is, the fastener feeding member 10
As shown in FIG. 3, the piston 12 of the cylinder device 11 is provided along the side of the guide passage 3.
The piston rod 13 is rotatably connected to the tip of the piston rod 13, which is integrally formed with the piston rod 13, and is biased toward the guide passage 3 by the spring member 14. A pair of upper and lower feed claws 15a, 15a that can enter the gap between the pieces are formed to protrude. The front end of the upper feed claw 15a in the fastener feeding direction is provided with a head 5a of the fastener 5.
A head pressing portion 15b that can be engaged with is formed.

Note that 16 is a lid that opens and closes the guide passage 3.

In the fastener feeding device A having the above configuration, when the cylinder device 11 is driven when feeding the fastener,
The piston rod 13 moves forward in the fastener feeding direction, and the feeding pawl 15 on the upper part of the fastener feeding member 10 moves forward.
The head pressing portion 15b of a engages with the fastener head 5a to advance the connecting band 6 along the guide path 3 by a distance corresponding to the connecting interval of the fasteners. In addition,
At this time, a portion of the fastener feeding member 10 is also engaged with the shaft portion of the fastener 5. As a result, a new fastener 5 is guided into the driving path 2. Thereafter, when the nail gun is driven, the driver member 4 performs a driving operation and the fastener 5 in the driving passage 2 is driven into the workpiece. Furthermore, when the piston rod 13 moves backward after driving, the fastener feeding member 10 resists the spring member 14 and moves the holding piece 6b,
It rotates to release the engagement with the gap 9 between the fasteners 6b, retreats from the guide passage 3, slides on the back side of the strip member 6a, retreats by a distance corresponding to the connection interval of the fasteners, and then moves to the next step. It enters the gap 9, thereby preparing the next fastener feed. In addition,
When the fastener feeding member 10 retreats, a non-return claw (not shown) engages with the connecting band 6.

As described above, the head pressing portion 15b of the feeding claw 15a of the fastener feeding member 10 engages with and presses the head 5a of the fastener 5 held by the connecting band 6 during fastener feeding, so that the fastener 5 is reliably fed into the driving path 2. When only two or three fasteners remain at the rearmost end of the connecting band 6, the driven portion of the connecting band 6 is placed in the driving path 2.
penetrates and extends beyond it (to the left in the figure),
Although it becomes difficult to support a predetermined feeding posture with only the guide passage 3, the feeding pawl 15 of the fastener feeding member
Since a is engaged with the head 15a of the fastener 5, the fastener head 5a is always forcibly guided into the driving path 2 during the feeding operation. Therefore, even if the fastener 5 is tilted to some extent, the driver member 4
can definitely hit Fuasuna 5's head.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the fastener feeding device of a nailer according to the present invention, Fig. 2 is a cross-sectional view taken along the line It is an explanatory diagram of a matching relationship. Code A... Fastener feeding member, 1... Nose portion, 3... Guide passage, 5... Headed fastener, 5
a...head, 6...connecting band, 6a...band-shaped member,
6b... Holding piece, 9... Gap, 10... Fastener feeding member, 15a, 15b... Feeding claw.

Claims (1)

[Scope of utility model registration request] A large number of holding pieces are jutted out from the upper and lower edges of a long synthetic resin band-like member, one pair each at a right angle in the same direction, and gaps are formed between each pair of upper and lower holding pieces that are adjacent to each other. A connecting band that separably holds headed fasteners, and a connecting interval corresponding to the connecting interval of the fasteners of the connecting band along the side of a guide passage that guides the connecting band to a nail driving path of a nail gun. a fastener feeding device equipped with a fastener feeding member that reciprocates over a distance, and the fastener feeding member has a pair of upper and lower parts that can enter into the gaps formed between adjacent holding pieces of the upper and lower parts of the connecting band. A nail forming a feed claw, and having a head pressing part formed at the front end of the upper feed claw in the fastener feeding direction, which can engage with the head of the fastener held by the upper holding piece. Fastener feeding device of the punching machine.