JPS6230057B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a diamond-shaped wire mesh manufacturing apparatus.

BACKGROUND ART As shown in FIG. 1, diamond-shaped wire mesh consisting of a large number of rows 1 bent into a chevron shape is widely used in a variety of applications, such as fences, lock nets, gabions, containers, and partitions.

However, in general, in this type of diamond-shaped wire mesh, each ridge 1a in the row line 1 is bent with a relatively large radius of curvature, as shown in FIG. Since 1b is curved outward, it is not only impossible to obtain a flat wire mesh, but also difficult to obtain a thin wire mesh, and there are many cases in which it is not suitable for use depending on the purpose.

It is possible to make the diamond-shaped wire mesh flat and thin by pressing it with a roll, etc., but performing such work on the entire wire mesh once the wire mesh has been knitted would require larger equipment and process problems. It is extremely difficult to obtain products of stable quality because the number of lines increases and each column line must be positioned accurately.

Problems to be Solved by the Invention The present invention, when bending the wire into a mountain shape in knitting a rhombic wire mesh, reduces the radius of curvature of each mountain as much as possible, and at the same time forms the part between the mountains into a straight line. An object of the present invention is to easily and reliably obtain a planar, thin-thick diamond-shaped wire mesh.

Means for Solving the Problems In order to solve the above problems, the present invention includes a plate-shaped blade rotatably inserted into a hollow worm provided with a spiral groove on the periphery, and a wire rod fed into the worm. A wire rod is wound into a spiral shape with a rotating blade and bent into a mountain shape, and the wire rod is fed out along a spiral groove in the axial direction of a worm to knit a wire mesh. , characterized in that, of the worm and the blade, at least an end portion of the blade on the wire feeding direction side is provided with an enlarged diameter portion for expanding the bending width of the wire wound around the blade. .

Function The wire supplied into the worm through the spiral groove is wound into a spiral shape by the rotating blade, bent into a mountain shape, and then sent out along the spiral groove in the axial direction of the worm by the rotational force of the blade. be done. At this time, the bending width of the wire rod is expanded at the enlarged diameter part of the blade, and this expansion causes the ridge portion located between two ridges to elongate and straighten, and at the same time, each ridge becomes more acutely angled. It is bent to

Then, the wire rod bent into a chevron shape is sequentially entangled with other wire rods already bent at a position removed from the blade, and a diamond-shaped wire mesh having a planar wire mesh surface and a thin mesh thickness is knitted.

Effect: An enlarged diameter part is provided at least at the end of the wire rod feeding direction side of the worm and the blade, and this enlarged diameter part expands the bending width of the wire rod, thereby straightening the mountain part. With an extremely simple configuration in which each crest is bent at an acute angle to reduce the winding thickness, a planar and thin rhomboid wire mesh can be reliably obtained.

Moreover, since there is no need to flatten the wire mesh or reduce the thickness of the wire mesh after knitting, it is not only extremely effective in terms of equipment and process, but also allows products of consistently stable quality to be obtained. .

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In FIG. 3, 10 is a bending part for bending the wire rod 12 into a chevron shape, and 11 is a knitting part for knitting the net 13 by sequentially intertwining the bent wire rods 12. .

As is clear from FIG. 4, the bent portion 10 includes a hollow worm 14 having a spiral groove 15 around its periphery, and a plate-shaped blade 16 rotatably inserted into the worm 14. Prepare, warm 1 above
4 is fixed on a machine base 18 via a fixing ring 17, and one end of the blade 16 is attached to a drive shaft 19, and the wire rod 12 fed into the worm 14 through the spiral groove 15 is spirally rotated by the rotating blade 16. By winding it into a shape and bending it into a chevron shape,
The wire rod 12 is configured to be fed out along the spiral groove 15 in the axial direction of the worm 14, and the blade 16 has a structure in which the wire rod 12 is twisted at a certain angle around the axis from the state shown by the chain line. As a result, a twisted portion 20 is formed.

Further, enlarged diameter portions 21 and 22 are formed at the ends of the worm 14 and the blade 16 on the wire feeding direction side through tapered portions 23 and 24, respectively. These enlarged diameter portions 21 and 22 are formed by enlarging the bending width W of the bent wire rod 12, so that the ridge portion 12 located between the two ridges 12a, 12a is
This is for elongating and straightening the peaks 12a, and at the same time reducing the radius of curvature of each peak 12a and bending it at an acute angle.

On the other hand, the knitting section 11 has a guide pipe 25 having an axial opening 26 on the upper surface, and the wire rod 12 bent at the bending section 10 is fed into the guide pipe 25 in a rotating state. , so as to be sequentially entangled with the wire rods 13a at the lower end of the already knitted net body 13.

In addition, 27 in the figure is a claw member that supports the lower end of the net body 13.

In the rhombus wire mesh manufacturing device having the above configuration,
When the wire 12 straightened into a straight line by a straightening roller (not shown) is fed into the worm 14 through the spiral groove 15, it is wound spirally around the blade 16 rotating together with the drive shaft 19, so that the wire rod 12 is straightened at a constant pitch. It is bent into a chevron shape and sent out along the spiral groove 15 in the direction of the knitting section 11. The wire rod 12 is fed by being rotated by a blade 16 with its peak 12 a fitted into the spiral groove 15 .

When the bent wire rod 12 is sent to the enlarged diameter sections 21 and 22, its bending width W is expanded by the enlarged diameter section 22 of the blade 16, and the bent wire rod 12 is sent to the enlarged diameter sections 21 and 22, and the bending width W is expanded by the enlarged diameter section 22 of the blade 16.
is straightened by elongation, and each peak 12a is bent at an acute angle by shortening or shortening the radius of curvature.

The bent wire rod 12 is introduced into the guide pipe 25 while rotating, and is entangled with the wire rod 13a at the lower end of the already knitted net body 13.

As shown in FIG. 5, the diamond-shaped wire mesh knitted in this manner has the ridge portions 28b in each row line 28 in a straight line shape, and each ridge 28a is bent at an acute angle with a small radius of curvature, so that the entire diamond-shaped wire mesh is It is planar and has a small net thickness t.

In the above embodiment, both the worm 14 and the blade 16 are provided with the enlarged diameter portions 21 and 22, but as shown in FIG. 22 may be provided.

In addition, although the illustrated one is a single linear type in which the wire rods 12 are fed to the worm one by one, it may be constructed as a two-wire type in which the worm is provided with two spiral grooves and two wire rods are fed simultaneously. Needless to say.

[Brief explanation of the drawing]

Fig. 1 is a partial front view of a conventional rhombic wire mesh, Fig. 2 is an enlarged sectional view thereof, Fig. 3 is a partial configuration diagram of the rhombic wire mesh manufacturing apparatus of the present invention, and Fig. 4 is an enlarged sectional view of the main parts thereof. FIG. 5 is a partial cross-sectional view of a diamond-shaped wire mesh manufactured by the apparatus of the present invention, and FIG. 6 is a cross-sectional view showing another example of the configuration of the bending part in the apparatus of the present invention. 12... Wire rod, 14... Worm, 15... Spiral groove, 16... Blade, 21, 22... Expanded diameter portion.

Claims (1)

[Claims] 1. A plate-shaped blade is rotatably inserted into a hollow worm with a spiral groove around the periphery, and the wire supplied into the worm is wound into a spiral shape by the rotating blade, thereby bending it into a chevron shape. At the same time, the wire mesh is knitted while feeding the bent wire in the axial direction of the worm along the spiral groove, and at least the end of the wire on the wire feeding direction side of the worm and the blade, A diamond-shaped wire mesh manufacturing apparatus characterized in that a diameter-enlarging portion is provided whose diameter is gradually enlarged in the width direction for reducing the winding thickness by increasing the bending width of the wire rod wound around the blade.