JPH0451990Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a nailer for loose nails, in which the loose nails supplied to the nose section are held in the injection hole of the nose section until just before nail driving. This invention relates to a nail feeding device that can be used.

(Prior art) In a nailing machine that drives out loose nails that are not connected, a feeding device for feeding each nail into an injection hole of a nose member for driving nails is as shown in Japanese Patent Publication No. 55-27832. something is known. this is,
A magazine member containing loose nails in an aligned state is extended to the side of the injection hole of the nose member, and the head of the first nail waiting tilted near the injection hole is pushed out to open the injection hole of the nose member. It is a method to send to.

However, in the nail feeding device of the above type,
The nails in the magazine member are loose nails that are not connected, so if the nail feeder is activated while the tip of the nose member is separated from the material to be driven, the loose nails will be pushed into the injection hole and It falls freely along the nose member and falls off from the end of the nose member. For this reason, the nail feeding device must be operated only after the tip of the nose member of the nail gun is pressed and positioned at the nail driving position before the nail driving operation of the nail gun. In this case, the supplied nail is pushed out into the injection hole and then falls onto a predetermined nail driving position of the material to be driven, so that the nail gun can be operated.

However, this method of supplying the nail into the injection hole after pressing the tip of the nose member to a predetermined position of the material to be driven during nail driving has the disadvantage that the working speed is slow.

(Technical problem of the invention) The present invention solves the above-mentioned drawbacks, and in particular, it can be operated immediately after the nail driving operation of one nail is completed to feed loose nails to the injection hole, and moreover, it can be fed into the nose member. It is an object of the present invention to provide a nail feeding device for a nail gun for loose nails, which can hold the nails in the injection hole until immediately before nail driving.

(Means for Solving the Problems) In order to solve the above problems, a nail supply device in a nailer for loose nails according to the present invention has a driver member for driving nails that can be slid freely on the tip of the nailer body. a nose member having an injection hole for guiding the nose member, and a magazine member provided on the side of the nose member;
In a nailing machine that drives loose nails sequentially guided and supplied by the magazine member into the injection hole of the nose member with a driver member and driven into the material to be driven, the magazine member is provided with a guide supply path for the loose nails, One side of the guide supply path forms a plane inclined with respect to the axis of the nose member, and on the side of the injection hole of the nose member with respect to the extending direction of the magazine member, there is a side surface from the guide supply path of the magazine member. A nail receiving recess for receiving the first loose nail to be supplied is formed, and the nail receiving recess is communicated with the injection hole, and the nail receiving recess is provided with an inclined plane for introducing the received loose nail into the injection hole. A guide groove is formed in the nose member in the direction of introducing the nail into the injection hole, and the axis of the loose nail in the nail receiving recess is formed in the nose member. movably accommodates a pusher member that engages with the part to force the loose nail into the injection hole, and normally enters the pusher member into the injection hole to push the nail fed into the injection hole. A spring is biased in a direction to press and hold the inner wall of the injection hole, and a contact member is operatively connected to a contact member protruding from the nose member in the nail injection direction in the vicinity of the guide groove, and receives a nail driving end signal. Accordingly, an operating member is provided, and the operating member is associated with the operation of the contact member during the nail driving operation to retract the pusher member from the injection hole, and when the nail driving is completed, a driving end signal is provided. The pusher member is further retracted to a position where the nail receiving recess is opened.

(Operations and effects of the invention) As described above, according to the invention, the nail receiving recess is opened by activating the actuating member based on the nail driving end signal and retracting the pusher member, and the inside of the recess is opened. The nail at the tip of the guide supply channel is introduced. Subsequently, when the driving end signal disappears after driving the nail, the pusher member moves into the injection hole by the spring bias, pushes the nail in the nail receiving recess into the injection hole, and presses and holds the nail against the inner wall of the injection hole. do.

Next, during the nail driving operation, the contact member is pressed against the material to be driven, but the pusher member is retracted from the injection hole by the operating member that operates in conjunction with this operation, so the loose nail loses its support and is ejected. It falls into the hole onto the material to be driven, and is driven into the material by the impact action of the driver member.
Then, when the nail driving is completed, the pusher member is further retracted to the position where the nail receiving recess is opened by the actuating member activated by the driving end signal, so that the loose nails in the magazine member are moved along the inclined plane. It is introduced into the receiving recess and, as described above, is pressed against the inner wall of the injection hole by the pusher member to prepare for the next nail driving.

As described above, according to the present invention, the nail is operated immediately after the nail driving operation of one nail is completed to supply loose nails to the injection hole, and this nail is held in the injection hole until immediately before nail driving. The practical effect is very large.

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

As shown in FIGS. 1 to 3, the nailer for loose nails is provided with a nose member 3 having an injection hole for slidably guiding a driver member 2 for driving nails at the tip of the nailer body 1. At the same time, a magazine member 4 is provided on the side of the nose member 3, and the loose nails N, which are successively guided and supplied by the magazine member 4 to the injection hole 5 of the nose member 3, are struck by the driver member 2 into the material to be driven. It is something to be typed into.

A plurality of loose nails are loaded in the magazine member 4 in an aligned state. A supply device for supplying these loose nails N to the injection hole 5 is configured as follows.

The magazine member 4 is provided with a guide supply passage 6 having a cross section slightly larger than the external shape of the loose nail N, and one side 6a of the guide supply passage 6 is oriented with respect to the axis P of the nose member 3 as shown in FIG. The loose nail N is supplied and guided to the nose member 3 along the above-mentioned plane.

A nail receiving recess 7 for receiving the leading loose nail N supplied from the magazine member 4 is formed on the side of the injection hole 5 of the nose member 3 with respect to the extending direction of the magazine member 4. The nail receiving recess 7 is formed at the end of the guide supply path 6 of the magazine member 4, and has an inclined plane 7a continuous with the inclined plane 6a for introducing the nail into the injection hole 5. It communicates with the hole 5.

Next, a guide groove 8 is formed in the nose member 3 in the direction of introducing the nail from the nail receiving recess 7 to the injection hole 5;
A pusher member 9 that engages with the shaft of the loose nail N in the nail receiving recess 7 and presses and supplies the loose nail N into the injection hole 5 is movably housed in the guide groove 8 . A pin 1 is provided on the surface side of this pusher member 9.
0 is implanted, and the pin 10 is attached to the nose member 3.
It is loosely fitted into an inclined groove 12 (see FIGS. 1 and 2) formed in an actuating member 11 that is movable along the axis P of the injection hole 5. Therefore, as shown in FIG. 1, as the actuating member 11 moves up and down, the pin 10 moves along the guide groove 8 while sliding within the inclined groove 12, so that the pusher member 9 moves along the loose nail N.
into the injection hole 5, and the tip part is inserted into the injection hole 5.
From a position in which the nail can be prevented from falling out, the nail is retracted from the nail receiving recess 7 to a position where the leading nail N in the magazine member 4 can be received into the recess 7.

Next, the actuating member 11 is connected to a piston rod 14 of a cylinder device 13, and is constantly urged downward in the figure by the force of a spring 15 provided on the piston rod 14. As a result, the pusher member 9 is urged to enter the injection hole 5.

The cylinder device 13 is also connected to a blowback chamber (not shown) of the nail gun.
The blowback chamber is a main piston operated by nailing (integrated with the driver member 2)
This chamber is used to accumulate compressed air to return the main piston to its initial position (top dead center position).When the main piston reaches bottom dead center, it is filled with compressed air, and the compressed air that moves the main piston downward is exhausted. This acts on the lower surface of the piston to move it upward. Therefore, the cylinder device 13 operates simultaneously with the completion of nail driving, and moves the actuating member 11 upward against the biasing force of the spring 15. This action causes the pusher member 9 to be moved to a position further retracted from the nail-receiving recess 7, allowing a new nail to be fed into the nail-receiving recess 7.

Further, the actuating member 11 is provided so as to be able to engage with a contact member 16 which is disposed protrudingly on the front side of the nose member 3 in the nail ejection direction.
It is also possible to move it upwards by pushing up.

This contact member 16 is slidable along the injection hole 5 of the nose, and its tip is attached to the nose member 3.
The tip of the nose member 3 is moved toward the nailer main body 1 by pressing the tip of the nose member 3 against the surface of the material to be driven in order to drive a nail. A portion 16a of the contact member 16 faces the lower end surface of the operating member 11, and the operation of the contact member 16 causes the operating member 11 to move upward.

Note that the actuating member 11 by the contact member 16
The amount of operation is set smaller than the amount of operation when the cylinder device 13 is used. That is, the part of the tip of the pusher 1 that has entered the injection hole 5 is retracted from the injection hole 5, and the nail N by the driver member 2 is removed.
impact is possible, but the nail receiving recess 7 is closed to the extent that a new nail is prevented from being fed into the nail receiving recess 7.

Next, the operation mode of the above-mentioned loose nail N supply device will be explained.

First, the pusher member 9 presses the shaft portion of the loose nail N supplied to the nail receiving recess 7 and moves it into the injection hole 5, and the pusher member 9 moves the loose nail N into the injection hole 5 so that the tip thereof enters the injection hole 5. A loose nail N is pressed against the inner wall of the nail, and its tip is engaged with the head of the loose nail. This prevents the loose nail N from falling off (see Figure 4a).

When driving a nail, the nail gun is installed at a predetermined nail driving position and the nose member 3 is placed on the surface of the material to be driven, the contact member 16 comes into contact with the surface of the material to be driven and moves upward, Actuation member 11
move upward by a predetermined amount. By this operation of the actuating member 11, the tip of the pusher member 9 is retracted from the injection hole 5. As a result, the nail in the injection hole 5 is released from the pusher member 9 (see b in the same figure).
Since the tip of the injection hole 5 is in contact with the surface of the material to be implanted, it will not fall off. In this retracted position, the tip of the pusher member 9 is located in the nail receiving recess 7, so the leading nail in the nail guide supply path 6 is not fed into the nail receiving recess 7.

After that, when a firing signal is given to the nail gun, the driver member 2 is driven impulsively and the nail N in the injection hole 5 is driven.
into the surface of the material to be driven.

Upon completion of the driving operation of the nail gun, compressed air for blowback is supplied to the cylinder device 13 as a driving end signal, and as a result, the cylinder device 1
3 operates the actuating member 11 further upward. Due to this operation, the pusher member 9 is further retracted and moved to a position where it opens the nail-receiving recess 7 at the tip of the magazine, and the leading loose nail N in the magazine member 4 moves into the nail-receiving recess 7. (See figure c). When the nail gun is grounded on the surface of the material to be driven, the piston is in the driving end position, so the driver member 2 also remains in the injection hole 5, and the nail fed into the receiving recess 7 is It is not possible to advance into the injection hole 5.

Next, when the nailer is separated from the surface of the material to be driven, the compressed air pressure in the blowback chamber causes the nailer to begin returning the piston to its intended position. As the compressed air pressure in the blowback chamber is consumed by the return of the piston and the pressure drops, the piston rod 14 of the cylinder device 13 is actuated downward by the spring force, thereby causing the pusher member 9 to move against the nail. It engages with the shaft of the nail N supplied to the receiving recess 7 and moves it in the direction of the injection hole 5. At this time, the driver member 2 is in the middle of returning inside the injection hole 5, and the nail N moved by the pusher member 9 engages with the side surface of the driver in the middle of returning. Since it is activated by force, it does not interfere with the return of the driver member 2. When the driver member 2 is completely retracted from the injection hole 5, the nail is moved into the injection hole 5 by the resilient movement of the pusher member 9, and the tip of the pusher member 9, which has also advanced into the injection hole 5, By engaging with the head of the nail N, the injection hole 5
The nail N is held within the shaft (see a in the same figure).

As described above, according to the above-mentioned feeding device, the leading nail can already be fed into the injection hole 5 immediately after the nail driving operation and before the tip of the nose member 3 of the nail gun is pressed against the nail driving position. Therefore, the nail driving operation can be performed immediately after the pressing operation of the nose member 3, and the work can be performed quickly.
Moreover, since the nails supplied into the injection hole 5 can be held within the injection hole 5, the nail gun is very easy to use.

[Brief explanation of the drawing]

Fig. 1 is a front view of a nail feeding device in a nail gun for loose nails, Fig. 2 is a sectional view taken on the line X-X in Fig. 1, and Fig. 3 is a sectional view taken on the line Y-Y in Fig. 2. , 4th
Figures a, b, and c are schematic illustrations of how nails are supplied by the pusher member. Code, 2...driver member, 3...nose member, 4...magazine member, 5...injection hole, 6...
Guide supply path, 7... Nail receiving recess, 8... Guide groove,
9... Pusher member, 11... Operating member.

Claims (1)

[Scope of Claim for Utility Model Registration] A nose member having an injection hole for slidably guiding a nail-driving driver member is provided at the tip of the nailer main body, and a magazine member is provided on the side of the nose member, In a nailing machine that drives loose nails sequentially guided and supplied to the injection hole of the nose member by the magazine member into the material to be driven by hitting with a driver member, the magazine member is provided with a guide supply path for the loose nails, One side of the guide supply path forms a plane inclined with respect to the axis of the nose member, and on the side of the injection hole of the nose member with respect to the extending direction of the magazine member, there is provided a guide supply path from the guide supply path of the magazine member. A nail receiving recess for receiving the first loose nail to be supplied is formed, and the nail receiving recess is communicated with the injection hole, and the nail receiving recess is provided with an inclined plane for introducing the received loose nail into the injection hole. A guide groove is formed in the nose member in the direction of introducing the nail into the injection hole, and the axis of the loose nail in the nail receiving recess is formed in the nose member. movably accommodates a pusher member that engages with the part to force the loose nail into the injection hole, and normally enters the pusher member into the injection hole to push the nail fed into the injection hole. A spring is biased in a direction to press and hold the inner wall of the injection hole, and a contact member near the guide groove is operatively connected to a contact member protruding from the nose member in the direction of nail injection, and also receives a nail driving end signal. Accordingly, an operating member is provided, and the operating member is associated with the operation of the contact member during the nail driving operation to retract the pusher member from the injection hole, and when the nail driving is completed, a driving end signal is provided. A nail feeding device for a nail gun for loose nails, characterized in that the pusher member is retracted to a position where a nail receiving recess is further opened.