JP3620365B2 - Nail supply mechanism for nail nailing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a nail supply mechanism in a nail driver for a connected nail that feeds a connected nail in which nail shafts are brought into close contact with each other toward a nose portion from a magazine that can be accommodated in parallel.
[0002]
[Prior art]
In general, when the connecting nails are stored in parallel in the magazine, in order to feed them from the magazine to the nail supply path and to supply them to the nose part, usually both sides of the innermost first connecting nail are It was transported while being pressed by a separate member and a feeding member. The separating member enters between the first and second connecting nails and separates both connecting nails. The first connecting nail is clamped by the separating member and the feeding member and the nose. It was sent to the club side.
[0003]
[Problems to be solved by the invention]
However, when it is desired to change the type of connecting nail during the nail driving operation, it is necessary to remove the connecting nail remaining in the magazine and in the nose portion. In this case, the clamp must be loosened by operating the release lever on the back side of the magazine to release the pressure applied by the feed member. Therefore, there is a problem that workability is poor.
[0004]
The present invention solves the above-mentioned problems and can reliably supply the connecting nail, and when it is necessary to remove the connecting nail in the middle of the operation, the connecting nail can be easily removed without the need for lever operation or the like. It is an object of the present invention to provide a nail supply mechanism in a connecting nail nailing machine that can be used.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, a nail supply mechanism in a nail nailing machine for a connecting nail according to the present invention is configured such that a plurality of connecting nails obtained by connecting a number of nails in a straight shape are continuously connected from a magazine capable of accommodating a plurality of connecting nails. And a fixed guide wall constituting one wall of a nail supply path for guiding the connection nail between the magazine and the nose part, and the fixed guide wall. And an opening / closing door member that constitutes the other wall of the nail supply path facing each other at a predetermined interval, and the opening / closing door member has a position between the position for entering the magazine and the position for retracting from the magazine. A slidable separator is provided, and the separator carries a feeding means that can be advanced into the nail supply path and can be engaged with a nail shaft in the magazine and the nail supply path, and on the outside of the fixed guide wall. Piston shaft provided on One end of a cooperation arm arranged to straddle the nail supply path is attached to a piston rod that can be reciprocated along the nail supply path by a solder mechanism, and the other end of the cooperation arm is provided in a separator. The separator can be engaged and disengaged, and the separator is reciprocated by the piston / cylinder mechanism.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a part of a nailing machine in which a nail feeding mechanism according to the present invention is implemented. One guide wall of a nail supply path 3 formed between a cylindrical nose portion 1 for nailing and a magazine 2 is shown. The state which opened the door member 4 which has comprised is shown. As shown in FIG. 2, a plurality of connecting nails 10 </ b> A, 10 </ b> B, and 10 </ b> C in which a number of nails are linearly connected are accommodated in the magazine 2 in a parallel state. The outer connecting nails 10 </ b> B and 10 </ b> C are biased toward the inner fixed guide wall 6 by the action of the pusher spring 5.
[0007]
A feed piston / cylinder mechanism 7 (actuating mechanism) is installed along the nail supply direction on the back side of the fixed guide wall 6 constituting the other guide wall of the nail supply path 3, and a piston coupled to the piston 8a. 3 and FIG. 4 is attached to the rod 8, and the cooperation arm 9 is provided so as to straddle the upper surface of the nail supply path 3 and the tip thereof faces the door member 4 side.
[0008]
A separator 11 is slidably supported on the door member 4 so as to face the nail supply path 3 along the nail supply path 3. The separator 11 is always urged forward by a spring 20. Further, the rear portion 11a of the separator 11 is movable within a range in which it completely escapes from the position where the separator 11 enters the magazine 2. In the separator 11, a connecting piece 12 protruding upward is engaged with the cooperation arm 9. That is, since the separator 11 is always urged forward by the spring 20, not only when there is no connecting nail but also when the door member 4 is opened, it is located on the front side as shown in FIG. Therefore, when the door member 4 is opened and then closed, the connecting piece 12 protruding above the separator 11 and the linkage arm 9 are engaged. By this engagement, the separator 11 is reciprocated by the operation of the feed piston / cylinder mechanism 7.
[0009]
Next, the separator 11 is provided with a first feeding means 13 and a second feeding means 14 respectively on the front and rear sides. The first feeding means 13 is rotatably supported by a pin in a recess formed in the front portion of the separator 11. The first feeding means 13 is formed with three claws 15, 16, and 17 (see FIG. 1) in the vertical direction along the axial direction of the nail and protrudes into the nail supply path 3 to the length of the nail shaft. Accordingly, it is set so that the shaft can be held down.
[0010]
The rear portion 11a of the separator 11 is formed in a slope shape with a narrow vertical width and a thin tip, and this portion enters the magazine 2 to separate the connecting nails accommodated in the magazine 2 in parallel. To do. A second feeding means 14 is rotatably supported by a pin in a recess formed in the rear portion of the separator 11.
[0011]
A plurality of claws 15, 16, 17 are formed at the tip of the first feeding means 13, and a claw 18 that enters the magazine 2 is also formed at the tip of the second feeding means 14. Then, as will be described in detail later, as the separator 11 reciprocates, the claw of the first feeding means 13 and the claw of the second feeding means 14 cooperate to connect the connecting nail in the magazine 2 and the nail supply path 3. By engaging the connecting nail, the connecting nail is supplied toward the nose portion.
[0012]
The first feeding means 13 and the second feeding means 14 are urged in the direction in which the claws protrude into the supply path by the action of a torsion coil spring (not shown) attached to the pin. Reference numeral 19 denotes a check claw.
[0013]
Next, the operation of the nail supply state will be described with reference to FIGS. First, FIG. 5 shows a state in which three connecting nails 10A, 10B, and 10C are loaded in the magazine 2, and the piston rod 8 is operated to the front end position, whereby the separator 11 is moved to the foremost position close to the nose portion 1. Has been placed.
[0014]
Here, when the nail driver is operated idle, air is introduced into the front chamber of the feed cylinder 8b as shown in FIG. 6, and the feed piston 8a is driven backward. As a result, the rear end of the separator 11 enters the magazine 2 and separates the series of connecting nails 10A from the other series of connecting nails 10B. At this time, the claw 18 of the second feeding means 14 can be engaged with the leading nail of the divided connecting nail 10A.
[0015]
During the return stroke of the striking mechanism after the idle driving operation, the air in the front chamber of the feed cylinder is exhausted as shown in FIG. 7, and the piston rod 8 is advanced by the action of a spring (not shown) disposed in the feed cylinder 8b. It is done. Along with this, the separator 11 advances, and the connecting nail 10A engaged with the claw 18 of the second feeding means 14 is moved forward. The connecting nail 10 </ b> A engages with a check claw 19 disposed on the fixed guide wall 6.
[0016]
Similarly, the separator 11 advances in the return stroke of the several idle driving operations, and the connecting nail 10A engaged with the claws of the two feeding means 13 and 14 is advanced as shown in FIG. At the position where the leading nail of the connecting nail 10A is pushed into the nose portion 1, the leading nail abuts against the wall of the nose portion 1 and the advance of the connecting nail 10A is stopped, thereby engaging the nail. The first feeding means 13 and the second feeding means 14 are stopped, and the separator 11 is also stopped from moving forward. At this time, the connecting nail 10A is pushed forward through the claws 15, 16, 17, 18 of the feeding means by the action of the spring force acting on the feeding piston 8a.
[0017]
In the above state, actual hitting of the connecting nail 10A supplied into the nose portion 1 is started. After that, the separator 11 is reciprocated at the last retracted position and a stroke corresponding to the connecting pitch of one connecting nail for each actual hitting to supply the connecting nails one by one in the direction of the nose portion.
[0018]
Next, when the first connecting nail 10A in the magazine 2 is consumed, the second connecting nail 10B is continued by the reciprocating motion of the separator 11, and then the third connecting nail 10C is continued. The driving operation can be continued.
[0019]
As described above, according to the nail supply mechanism, the feeding means 13 and 14 are supported on the separator 11, and the separator 11 is reciprocated by the feeding piston / cylinder mechanism 7, whereby the feeding means 13 and 14 are moved together with the separator 11 to the magazine. Since the connecting nail is supplied to the nose portion 1 side by engaging with the nail shaft of the nail in the nail 2 or the nail supply path 3, the nail can be driven continuously and in the middle of the nail driving operation When it is necessary to change the type of the connecting nail, the separator 11 and the feeding means 13 and 14 are separated from the connecting nail by opening the door member 4 as shown in FIG. Therefore, the connecting nails remaining in the magazine 2 and the nose portion 1 can be easily removed.
[0020]
The feeding means is not limited to the example provided in the separator 11 as described above. For example, as shown in FIG. 9, one each of the first feeding means 13 and the second feeding means 14 may be carried on the piston rod 8 and the separator 11, respectively. In this case, a long hole 21 is formed in the piston rod 8, and the shaft 22 of the first feeding means 13 is rotatably and slidably attached to the long hole 21, and the shaft 22 is always urged forward by a spring 23. The configuration is as follows. Even with such a configuration, the connecting nails can be sequentially supplied to the nose portion 1.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a part of a nail driver implementing a nail feeding mechanism according to the present invention. FIG. 2 is a cross-sectional view of a door member of the nail driver closed. Fig. 4 is a longitudinal sectional view of the nailing machine cut by the second feeding means. Fig. 5 is a sectional view of the magazine loaded with connecting nails. FIG. 6 is a cross-sectional view of a state where the feed piston is retracted. FIG. 7 is a cross-sectional view of a state where the feed piston is returned and advanced. FIG. Explanatory drawing of other installation modes of feed means [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Nose part 2 Magazine 3 Nail supply path 4 Door member 11 Separator 13 1st feed means 14 2nd feed means

Claims (1)

In a nailing machine for connecting nails, wherein the connecting nails are continuously supplied to a nose portion from a magazine that can accommodate a plurality of connecting nails connected in a straight line with a plurality of nails in parallel.
A fixed guide wall constituting one wall of a nail supply path for guiding a connecting nail between the magazine and the nose portion, and a second wall of the nail supply path opposed to the fixed guide wall at a predetermined interval An opening and closing door member,
The opening / closing door member is provided with a separator that can slide between a position that enters the magazine and a position that retreats from the magazine, and the separator can be advanced into the nail supply path so that the separator can move into the nail and the nail. While carrying the feeding means that can be engaged with the nail shaft in the supply path,
One end of a linkage arm arranged to straddle the nail supply path is attached to a piston rod that is reciprocally movable along the nail supply path by a piston / cylinder mechanism provided outside the fixed guide wall. A nail supply mechanism for a connecting nail nailing machine, wherein the other end of the linkage arm can be engaged with and disengaged from a connecting piece provided on the separator, and the separator is reciprocated by the piston / cylinder mechanism.

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