JPH0224502Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a nail making machine (tack making machine) used to manufacture nails having barbs for improving pull-out strength.

``Prior Art'' Conventional nails with barbs are manufactured by manufacturing a nail body consisting of a body with a pointed tip and a head, and then forming barbs on the body in a separate process.

``Problems to be Solved by the Invention'' The above-mentioned conventional means had the disadvantage that the nails with barbs were manufactured using two processes and a machine, which made the nails more expensive than ordinary nails.

``Means for Solving the Problems'' However, the present invention is equipped with a cutting mechanism that cuts a wire rod of irregular length into predetermined dimensions, and the cutting mechanism includes a reciprocating mechanism that faces the wire rod in a direction perpendicular to the longitudinal direction thereof. A nail making machine is provided with a pair of movable cutting blades, and the cutting blades are provided with a cutting part for sharpening the end of the wire on the side cut to a predetermined size. The cutting blade is provided with a pricking part for forming barbs on the outer periphery of the wire on the side that is cut into a predetermined size using the motion.

"Function" According to the nail making machine of the present invention, a head is formed at the other end of the body of a predetermined length with a tip formed at the tip, and at the same time, the body slightly above the tip can produce nails with barbs formed on them. As a result, a nail with barbs can be manufactured in one step, and the manufacturing cost of the nail is the same as that of a nail without barbs, resulting in a reduction in product cost.

"Embodiment" An embodiment of the present invention will be described below in detail based on the drawings.

FIG. 1 is a plan view showing an embodiment of the nail making machine according to the present invention. F
a transfer mechanism B that sequentially transfers the nail material F by a predetermined size, a cutting mechanism C that cuts the nail material F, and a head 3 on the nail material F.
9 (see FIGS. 9 and 10).

The straightening mechanism A is arranged such that the nail material F is placed on a horizontal roll table 1.
One side of the vertical roll stand 1a, on which three horizontal rolls 2... and two horizontal rolls 3, 3 are rotatably attached on one side and two horizontal rolls 3, 3 on the other side, and protrude from the front surface of the roll stand 1 and fixed thereto. Separate the nail material F and rotatably attach one vertical roll 2a on the upper side and two vertical rolls 3a on the lower side, and move the nail material F between the left and right horizontal rolls 2 and 3 and on the front side thereof. By passing the nail material F between the upper and lower vertical rolls 2a and 3a, the long nail material F in the form of a coil is straightened by correcting distortions and bends in the horizontal and vertical directions.

On the other hand, the driving shaft 5, which has the flywheel 4 at one end, is engaged with interlocking shafts 8 and 9 via gear mechanisms 6 and 7 consisting of a pair of bevel gears.
A cam 10 that operates on the head making mechanism D, which will be described later, is in the middle.
has been established.

The interlocking shafts 8 and 9 are provided with reciprocating elements 11 and 12 such as cams (a crank mechanism may be used instead of the cam), respectively, at the other ends, and these reciprocating elements 11 and
The cutting blades 13 and 14 of the cutting mechanism C are connected via the cutting mechanism C.

Each of these cutting blades 13, 14 has a symmetrical structure, and the upper cutting blade 13 in FIG.
As shown in FIGS. 5 to 5, it has a block shape with a trapezoidal cross section, and one end face of the trapezoid has a triangular pyramid-shaped cutting groove 13a as a cutting part and a semi-cylindrical part as a splintering part. A prick groove 13b is formed.

The cutting groove 13a is formed on the left side (nail feed side) of the trapezoidal end face, and the apex is provided at the left side end.

The stabbing groove 13b is formed on the right side of one end surface of the cutting blade 13 (nail material delivery side), and the cutting groove 1
The diameter and depth of the side end of 3a are formed to be shorter than the diameter of the nail material F, and the diameter and depth of the other end are formed to be approximately the same as the diameter of the nail material F.

Further, the cutting groove 13a and the stabbing groove 13b are formed on the center line of the cutting blade 13.

Although one cutting blade 14 is not shown, it has a symmetrical structure with the cutting blade 13 shown in FIGS. A semi-cylindrical groove 14b serving as a barb is formed.

As shown in FIG.
As shown in FIG. 1, the trapezoidal end faces formed with b and 14b are attached to the cutting mechanism C in a facing manner so as to face each other.

Although the mounting structure of the cutting blades 13 and 14 is schematically shown in FIG. 1, it is actually as shown in FIG. 7.

That is, a sliding guide block 16 is attached to the knife stand 15 with a set bolt (not shown), and a knife box 19 is slidably provided on this block 16 via an adjustment screw 17 and a guide piece 18. The cutting blade 13 is removably fixed using a knife holding plate 20 and a fixing screw 21, and each element 1 is moved by driving the reciprocating elements 11 and 12.
3, 19 to 21 are configured to reciprocate along the sliding guide book 16.

By the way, a crank 22 is provided at the other end of the driving shaft 5 (lower end in FIG. 1), and this crank 2
One end of the crank rod 23 is connected to the arm 24 of the transfer mechanism B, and the other end of the crank rod 23 is connected to the arm 24 of the transfer mechanism B.

This arm 24 is pivotably attached to a base 25 via a shaft 26, and is provided with a one-way chuck 27 at the tip thereof.

The chuck 27 has a ball-shaped wedge 28 inside.
The nail material F is held between the fixed element 29 and the floating element 30, and the nail material F is moved by a predetermined dimension (a dimension corresponding to the amount of swing of the arm 24) by driving the crank rod 23. It is configured to be transferred from the left side to the right side.

The head making mechanism D attaches the head 3 to the nail material F before cutting.
9 (see FIGS. 9 and 10), and the head making mechanism D includes a pair of chucks 31, 3.
2 and a hammer 33, the chuck 31,
32 are provided facing each other so as to sandwich the nail material F, one movable side chuck 31 is attached to a cam 34 fitted to the interlocking shaft 8, and the other fixed side chuck 32 is attached to a screw 35 for adjusting the clamping position. It touches the tip.

On the other hand, the hammer 33 has a roller 37 pivotally supported by a pin 36 at the other end, and a spring 38 is stretched around the roller 37 so as to roll the roller 37 into contact with the cam 10.

The present embodiment is configured as described above, and its operation will be explained below.

When the two interlocking shafts 8 and 9 rotate together with the rotation of the driving shaft 5, the crank 22 first rotates, causing the crank rod 23 to move left and right.

Therefore, the arm 24 of the transfer mechanism B connected to the crank rod 23 swings about the shaft 26 and holds the nail material F that has been straightened by the straightening mechanism A with the one-way chuck 27, on the left side in FIG. Intermittently transfer only to the right side. Note that, at this time, the movable chuck 31 is open.

Next, as the cam 34 of the interlocking shaft 8 rotates, the chuck 31 slides to sandwich the nail material F between it and the fixed chuck 32. At the same time, the hammer 33 presses the roller 37 by the operation of the cam 10 of the driving shaft 5, and strikes the head 39 of the nail material F held between the chucks 31 and 32, as shown in FIG.

Next, the pair of chucks 31 and 32 are opened again, and the nail material F, on which the head 39 has already been formed, is transferred by a predetermined dimension by the transfer mechanism B, and the chucks 31 and 32 are again used to remove the nail material F. After sandwiching the cutting blade 1 connected to the reciprocating elements 11 and 12
3 and 14 slide in opposition to each other as shown in FIG. 8 and are pressed against the nail material F. At this time, as shown in FIG.
One end of b, 14b bites into the nail material F, and a pair of upward barbs 42, 42 (ninth
(see Figures 1 and 10) are bulged.

Therefore, from the long nail material F, FIGS. 9 and 1
A nail E as shown in Figure 0 is manufactured. That is, a head 39 is formed at the other end of the body 41 which has a square pyramid-shaped apex 40 at its tip, and a pair of upwardly directed barbs 42, 42 are bulged out on the outer periphery of the body 41 above the apex 40. It is something to do.

The nail E manufactured in this way is, for example, the 11th nail.
As shown in the figure, by nailing the two plates 43, 44 together, these plates 43, 44 can be integrally connected. At this time, the thorns 42, 42 prevent the body 41 from coming off from each plate 43, 44,
To improve the pull-out strength of nail E.

"Effects of the Invention" As is clear from the above embodiments, the present invention is equipped with a cutting mechanism C that cuts the wire F of irregular length into a predetermined size, and the cutting mechanism C has a cutting mechanism C that is perpendicular to the longitudinal direction of the wire F. A pair of cutting blades 13 and 14 are provided and are moved reciprocally in opposite directions.
3 and 14 are the wire rods F cut to a predetermined size.
Cutting section 13 for cutting the end into a sharp state
b, 14b, the pricking parts 13a, 14a for forming barbs 42 on the outer periphery of the wire F on the side cut to a predetermined size using the cutting operation of the cutting blades 13, 14 are provided. Cutting blade 13,1
4, the head 39 is formed at the other end of the body 41 of a predetermined length, which has the apex 40 formed at the tip.
It is possible to manufacture a nail E in which barbs 42, 42 are formed on the body portion 41 slightly above the pointed portion 40. As a result, the nail E having the barbs 42, 42 can be manufactured in one step, and the manufacturing cost of the nail E is the same as that of a nail without barbs,
This has remarkable effects such as reducing product costs.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the nail making machine according to the present invention, Fig. 2 is a plan view of the cutting blade, Fig. 3 is a left side view of the same, Fig. 4 is a front view of the same, and Fig. 5 is a plan view of the nail making machine according to the present invention. The same right side view, Fig. 6 is an explanatory diagram of the operation of the cutting blade, Fig. 7 is an explanatory diagram of the mounting structure of the cutting blade, Fig. 8 is a plan view for explaining the operation of the nail making machine, and Fig. 9 is a diagram of the nail making machine. Plan view, 1st
Figure 0 is a front view of the same, and Figure 11 is an explanatory diagram of the state in which the nail is used. A... Correction mechanism, B... Transfer mechanism, C... Cutting mechanism, D... Head making mechanism, E... Nail, F... Nail material,
13, 14...cutting blade, 13a, 14a...cutting part, 13b, 14b...pricking part, 39...head,
40...apex, 42...thorn.

Claims (1)

[Scope of utility model registration request] Cutting mechanism C that cuts the irregular length wire F into predetermined dimensions
The cutting mechanism C is provided with a pair of cutting blades 13 and 14 that face and reciprocate the wire F in a direction perpendicular to the longitudinal direction thereof, and the cutting blades 13 and 14 have the ability to cut into a predetermined size. A cutting section 1 for cutting the end of the wire rod F on the cut side into a sharp state.
3b, 14b, the pricking parts 13a, 14a for forming barbs 42 on the outer periphery of the wire F on the side cut to a predetermined size using the cutting operation of the cutting blades 13, 14 are provided. cutting blade 13,
A nail making machine characterized by having a shape of 14.