JPH0237474Y2 - - 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 that are driven completely into objects such as wood.

"Prior Art" Conventionally, a straightening mechanism for straightening an irregular length wire, a transfer mechanism for transporting the wire by a predetermined dimension, a cutting mechanism for cutting the wire into a predetermined dimension, and a straightening mechanism for straightening the wire rod in the longitudinal direction. There was a nail making machine that was constructed with a head making mechanism for pressing and continuously manufactured ordinary nails having flat heads in a direction perpendicular to the longitudinal direction from wire rods of variable length.

``Problem that the invention aims to solve'' Since it is extremely uneconomical to have a special nail making machine to manufacture a special type of nail with a longitudinally flat head, we decided to use a conventional nail making machine. When manufacturing this using a machine, it is necessary to do so without changing the existing structure as much as possible, but if you try to form the head using a head-making mechanism, you will have to make a large-scale change in the pressing direction of that mechanism. Along with the need for modification,
Along with this, there is a problem in that the power transmission system must also be modified.

``Means for Solving the Problems'' However, the present invention is equipped with a cutting mechanism that cuts a wire rod of irregular length into a predetermined size, and the cutting mechanism includes a reciprocating mechanism that faces the wire rod in a direction perpendicular to the longitudinal direction of the wire rod. A nail making machine is provided with a pair of movable cutting blades, and the cutting blades are formed with a cutting part for sharpening the end of the wire on the side cut to a predetermined size. A flat portion for press-forming the end portion of the irregular length wire into a flat shape in the longitudinal direction using an operation is formed on the feeding side of the irregular length wire from the cutting portion of the cutting blade.

``Operation'' Therefore, according to the present invention, a trowel can press-form a flat head in the longitudinal direction using a cutting blade without using a head-forming mechanism by using the cutting operation of an existing cutting mechanism. Because it is possible to produce a special type of nail with a flat head in the longitudinal direction, a conventional nail making machine for producing ordinary nails with a flat head in the direction perpendicular to the longitudinal direction can be used with almost no modification. This makes it possible to manufacture.

"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. Transfer mechanism B that sequentially transfers material F by a predetermined size
and a cutting mechanism C that cuts the nail material F.

The straightening mechanism A is arranged so 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 attached rotatably on one side and two horizontal rolls 3, 3 on the other side, respectively, 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 its distortion and horizontal and vertical curvature.

On the other hand, interlocking shafts 8 and 9 are interlocked to both sides of a driving shaft 5 having a flywheel 4 at one end via gear mechanisms 6 and 7 consisting of a pair of bevel gears.

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 and 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 trapezoidal end face has a flat head 37 for holding one of the nails F that are continuously fed.
(See FIGS. 9 and 10) A tapered plane 13a is a flat part formed on the tapered surface 13a, and a triangular pyramid-shaped cutting groove 13b is a cutting part that cuts the other nail material F in a sharp state connected to the tapered plane 13a. is formed.

The tapered plane 13a is formed on the left side of the trapezoidal end face (nail material feeding side), the cutting groove 13b is formed on the right side of the trapezoidal end face (nail material feeding side), and the apex is provided on the left side end. ing.

Although the illustration of one cutting blade 14 is omitted, it has a symmetrical structure with the cutting blade 13 shown in FIGS. 2 to 5, and similarly has a tapered plane 14a which is a flat part and a triangular part which is a cutting part. Lace-shaped cutting groove 14b
is formed.

As shown in FIG.
As shown in FIG. 1, the trapezoidal end surfaces formed with 3b 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
The crank rod 23 has one end connected to the arm 24 of the transfer mechanism B at the other end.

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.

Also, a pair of chucks 3 hold the nail material F.
1 and 32 are provided facing each other, one movable side chuck 31 is attached to a cam 33 fitted to the interlocking shaft 8, and the other fixed side chuck 32 is brought into contact with the tip of a screw 34 for adjusting the clamping position. There is.

The present embodiment is constructed 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 33 of the interlocking shaft 8 rotates, the chuck 31 slides to sandwich the nail material F between it and the fixed chuck 32. At about the same time, reciprocating element 1
As shown in FIG. 8, cutting blades 13 and 14 connected to nails 1 and 12 slide oppositely and press against the nail material F. At this time, as shown in FIG.
b, 14b cut one side of the nail material F into a square pyramid shape, and each tapered plane 13a, 14
At step a, the other side of the nail material F is pressed to form a flat head 37 (see FIGS. 9 and 10).

Next, the pair of chucks 31 and 32 are opened again, and the nail material F, on which the flat head 37 has already been formed, is transferred by a predetermined dimension by the transfer mechanism B, and the chucks 31 and 32 are used again to remove the nail material F. After clamping F, use the cutting blades 13 and 14 again as described above,
The nail material F is cut into a square pyramid shape, and the next flat head 37 is formed.

Therefore, from the long nail material F, FIGS. 9 and 1
A nail E as shown in Figure 0 is manufactured. In other words, a flat head 37 is formed at the other end of a body 36 which has a square pyramid-shaped apex 35 at its tip.

The nail E manufactured in this way is, for example, the 11th nail.
As shown in the figure, two plates 43 and 4 are fixed objects.
4, these plates 43, 44
can be connected together. At this time, the head 37
Since it is formed flat in the axial direction of the nail E, it can be driven completely into the upper plate 43.

Although the conventional nail making mechanism for forming a head is not shown in the nail making machine of this embodiment, it goes without saying that the nail E according to the present invention can be manufactured by a nail making machine equipped with this head making mechanism. It is.

"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, which are reciprocated 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 flat parts 13a, 14a for press-forming the ends of the irregular length wire F into a flat shape in the longitudinal direction using the cutting operation of the cutting blades 13, 14, Cutting blade 13,1
It is formed on the feeding side of the indefinite length wire F from the cutting parts 13b and 14b of No. 4, and the existing cutting mechanism C
Utilizing the cutting action, the head 37 that is flat in the longitudinal direction can be press-formed by the cutting blades 13 and 14 without using a head-making mechanism. Remarkable economical effect of being able to manufacture a special type of nail E having a flat head 37 in the longitudinal direction without almost modifying a conventional nail making machine for manufacturing ordinary nails having a length of 37 mm. play.

[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 an explanatory diagram of the operation of the cutting blade. 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, E... Nail, F... Nail material, 13, 14... Cutting blade, 13a, 14a... Taper plane (flat part),
13b, 14b...cutting groove (cutting part), 35...
Apex, 36... body, 37... flat head.

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 in a direction perpendicular to the longitudinal direction of the wire F, 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 flat parts 13a, 14a for press-forming the ends of the irregular length wire F into a flat shape in the longitudinal direction using the cutting operation of the cutting blades 13, 14, cutting blade 13,
The nail making machine is characterized in that the cutting portions 13b and 14b of 14 are formed on the feeding side of the indefinite length wire F.