JPS6219994B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting piece remaining removal device for a driving machine that successively drives a large number of connected fasteners such as nails into wood, for example.

FIG. 1 is a partially sectional side view of a driving tool driven by a conventionally known pneumatic or electric drive source. In the figure, reference numeral 2 denotes fasteners such as nails, and a large number of these fasteners are held in a line by connecting pieces 1 connected by resin or wire, and are housed in a magazine 11 as a fastener assembly. A switch 3 is attached to the main body 4, and is configured to drive a piston 5 of a drive unit installed in the main body 4, which is driven by an air or electric drive source (not shown). stopper 2
This is a shocking operation. 6 is the injection port, 7 is a stopper located inside the injection port, 8 is a mating material such as wood into which the stopper 2 is driven, and 9 is the stopper 2 after the stopper 7 is driven inside the injection port 6. This is the rest that is not locked. Reference numeral 10 denotes an opening opened in the side wall of the injection port 6, which is pressed via a driving means (not shown) in conjunction with driving the piston 5 via the switch 3 and striking and driving the stopper 7 in the injection port. Injection port position stop 7 within driven injection port 6
After it is removed, the remaining portion 9 is discharged.

In the above structure, when the switch 3 is pulled, the piston 5 in the main body 4 descends, and the stopper 7 in the injection port 6 is impacted with impact, and the connecting piece 1
It is automatically removed from the hole and driven into the mating material 8. When the injection port internal position stopper 7 is ejected from the injection port 6 as shown in FIG. Since the parts 10 are fed out one after another, the remaining parts 9 extend forward for a long time, which obstructs the driving operation and has the drawback of poor operability.

In addition, as another method of driving the injection port internal position stopper 7 into the mating material 8 as shown in FIG. A method shown in FIG. 4, in which the parts are simultaneously driven in, is also known. However, in the case of this method, there was a problem in that a part of the integrally stamped connecting piece 1 remained on the surface of the mating member 8, resulting in a poor finish, as shown in FIG.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a method for removing the remaining connecting piece of a driving machine, which can improve the driving operation and prevent a part of the connecting piece from remaining on the mating material. That is.

The connection piece remaining removal device for a driving machine according to the present invention includes a driving part formed in a main body so as to be driven by a driving source to drive a stopper, and a switch attached to the main body for driving the driving part. , a magazine for storing a fastener assembly in which a large number of the above-mentioned fasteners are connected by a connecting piece; an ejection opening formed at one end of the magazine and through which the above-mentioned fasteners are ejected; and the connecting piece is inserted into the ejection opening. and an opening opened in the side wall of the injection port through which only the remaining part of the connecting piece after the stopper is driven is continuously fed out, and the opening is provided on the outer side of the opening. A means is provided for cutting the remaining part of the connecting piece which is discharged from the opening after the stopper is driven in.

Hereinafter, the connecting piece remaining removal device of the driving machine of the present invention is as follows:
Using this embodiment, parts that are the same as those in the prior art are denoted by the same reference numerals, and explanations of the structures of the same parts will be omitted and will be explained with reference to FIGS. 6 to 8. Fig. 6 is a side view partially shown in cross section;
7 is a perspective view seen from the upper left side of FIG. 6, and FIG. 8 is an explanatory diagram of the cutter operation of FIG. 7. In the figure, 12 is a cutter, and the middle part of the cutter 12 is rotatably attached to the side wall above the opening 10 of the injection port 6 through a pin 13.
It has b. A foot portion 14b having a winding portion 14a wound around the pin 13 and locking to the cutter 12, and a foot portion 14 locking to the side wall of the injection port 6.
The blade portion 12a is biased by a return spring 14, which is a torsion spring having an angle C, to hold the blade portion 12a in a standby position before cutting the remaining portion 9. By pulling and rotating the pulling part 12b clockwise from the position of the blade part 12a in FIG. 12a returns to the position shown in FIG.

In the above structure, if the stopper 2 is continuously driven in one after another, it will be ejected from the opening 10 of the injection port 6;
That is, the remaining portion 9 of the connecting piece 1 sent out is the sixth
As shown in FIGS. 7 and 7, they gradually extend forward. At this time, the pull portion 12b of the cutter 12 is pressed toward the main body 4 side by the return spring 14, and the cutter 12
There is a slight gap between the blade part 12a and the remaining part 9, so that there is no problem in feeding out the remaining part 9. Then, the remaining portion 9 of the connecting piece 1 extending forward
As shown in FIG.
By rotating b clockwise, the cutter 12
The blade part 12a rotates around the pin 13 and the remaining part 9
cut. After cutting, the cutter 12 is attached to the return spring 1.
Due to the restoring force of 4, it returns to its old position as shown in Figure 7.
There will be no problem with the next typing operation.

In this way, the connecting piece remaining removal device of the driving machine of this embodiment removes the remaining connecting piece discharged from the opening after the fastener is driven by the cutter that is rotationally driven onto the opening surface of the opening. Since it is configured to be cut and removed, the remaining part of the connecting piece after driving will not get in the way when driving the fastener, and the connecting piece will not be driven together with the fastener, resulting in a smooth finish. It is in good condition and can significantly improve driving workability.

FIG. 9 shows another embodiment, and the difference from the above embodiment is that in the above embodiment, the cutter 12 is rotated to cut the remaining portion 9, whereas in this embodiment, the cutter 12 is rotated to cut the remaining portion 9.
The point is that the blade is cut by reciprocating in the axial direction of the injection port 6. In FIG. 9, reference numeral 15 denotes a cutting device, which includes an injection port opening side end 15a that loosely fits around the outer periphery of the opening end of the injection port 6, a switch side end 15b connected to the switch 3, and a disconnection device 15 that connects the injection port opening side end 15a that loosely fits around the opening end side outer periphery of the injection port 6, and the switch side end 15b that is connected to the switch 3. The blade part 12a is formed to be positioned below the remaining part 9 due to the tension of the spring 16. When the switch 3 is operated in the direction of the arrow, the piston 5 descends to drive the stopper 2, and the blade 12a is driven upward to cut the remaining portion 9. When loosened (released), the cutting device 15 moves to the ninth position due to the tension of the spring 16.
It returns to the position shown in the figure. That is, in this embodiment, the remaining portion 9 is cut off each time the stopper 2 is driven in, whereas in the above embodiment, the pulling portion 12 is cut off.
It is cut every time you pull b. This example also has the same effects as the above example.

As described above, the connecting piece remaining removal device for a driving machine of the present invention has the effect of significantly improving driving workability without leaving any part of the connecting piece on the mating material.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a part of a conventional driving machine in cross section, Fig. 2 is a sectional view taken along the - arrow in Fig. 1, and Fig.
The figure is an explanatory diagram of driving the stopper in Figure 2, and Figures 4 and 5 are explanatory diagrams of the driving method in which the connecting piece is cut together with the stopper.
FIG. 6 is a side view showing a part of an embodiment of the device for removing connection piece residue of a driving machine of the present invention in cross section, FIG. 7 is a perspective view seen from the upper left side of FIG. 6, and FIG. 8 is the seventh
FIG. 9 is a side view of another embodiment of the connecting piece remaining removal device of the driving machine of the present invention in the same state as FIG. 6. 1... Connecting piece, 2... Stop, 3... Switch,
4...Main body, 5...Piston, 6...Injection port, 9
...Remainder, 10...Opening, 11...Magazine,
12...Katsuta, 14...Return spring.

Claims (1)

[Scope of Claims] 1. A driving part formed inside the main body so as to be driven by a driving source to drive the stopper, a switch attached to the main body that drives the driving part, and a connecting piece to drive a large number of fasteners. A magazine that stores a stopper assembly to which the above-mentioned stops are connected; an ejection port formed at one end of the magazine through which the above-mentioned fasteners are ejected; and a drive means for sequentially feeding out the connecting pieces toward the ejection port side. and,
and an opening in the side wall of the injection port through which only the remaining part of the connecting piece is continuously fed out after the stopper is driven in, and the opening is provided on the outside of the opening and after the stopper is driven in. A connecting piece remaining removal device for a driving machine, characterized in that a device is provided for cutting off the remaining connecting piece discharged from the opening. 2. Claim 1, wherein the means is formed by a cutter that is rotationally driven on the opening surface of the opening, and after cutting the remaining portion, returns the remaining portion to the old position before cutting by the tension of a spring. Connecting piece remaining removal device for driving machine. 3. The driving machine according to claim 1, wherein the means is formed by the cutter that is reciprocated in the axial direction of the injection port on the opening surface of the opening in conjunction with the operation of the switch. Connecting piece remaining removal device.