JPS5994544A - Production of tapered product made of wire net - Google Patents

Abstract

PURPOSE:To improve production efficiency and to lessen the loss of a belt-like plain weave wire net which is cut zigzag by blanking said wire net to a square shape along the cutting line and drawing the central part thereof. CONSTITUTION:The intermediate part in the width of a belt-like plain weave wire net 1 consisting of vertical wires 1a and horizontal wires 1b is cut zigzag to form two wire net pieces 2. The pieces 2 are blanked to form many blanked pieces 5 of the wire net each having a square shape including each crest part 4 at a zigzag side edge 3, so that the wire 1a and the wire 1b form two diagonal lines. While the peripheral edge part of the piece 5 is pressed, the central part is drawn, whereby a tapered product 6 is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing tapered products made of wire mesh used for, for example, tea strainers, udon strainers, and the like.

Conventionally, in order to make a tapered product from a band-shaped plain-woven wire mesh, the band-shaped wire mesh was first cut by hand using scissors in the width direction into a size equivalent to two products, and then the cut pieces of the wire mesh were cut by a punching machine. A tapered product was manufactured by punching out two substantially rectangular wire mesh punched pieces of a required size, and then drawing these wire mesh punched pieces.

However, such conventional methods have the problem that cutting the emergency wire mesh is extremely time-consuming and is likely to be inaccurate since the cutting is done manually. In addition, the two diagonals of a substantially rectangular wire mesh punched piece must be made up of the vertical and horizontal lines of the wire mesh, but in the conventional method, there is a lot of loss of wire mesh, so a large amount of material is used. Therefore, there was a problem of high cost. Furthermore, since the wire mesh strips are cut into sizes equivalent to two products and then fed one by one to the punching machine, it is not possible to achieve continuous punching work, resulting in poor production efficiency for tapered wire mesh products. There was a problem.

This invention was made in order to solve the above-mentioned problems of the prior art, and it is possible to continuously cut and punch out band-shaped plain woven wire mesh, and to produce tapered products made of wire mesh very efficiently. The purpose of this invention is to provide a method that can be manufactured at low cost with very little loss.

The method of this invention will be explained below with reference to the drawings.

In FIGS. 1 to 3, the method of the present invention is a belt-shaped plain woven wire mesh (1 ) in the length direction and in a jig-shape when viewed from the plane to form two wire mesh cut pieces (2) (Figure 1).
Next, attach the wire mesh cut piece (2) to its zigzag-shaped side edge (3).
Punch out a substantially rectangular shape to include each peak (4),
A large number of substantially rectangular wire mesh punched pieces (5) in which the vertical line (1a) and the horizontal line (1b) constitute two diagonal lines are formed (Fig. 2).
A tapered product (6) is formed by squeezing the center portion of each metal mesh punched piece (5) while pressing its periphery and edges (FIG. 3).

In the above, the mesh size of the wire mesh (1) varies depending on the size of the tapered product (6) to be finally obtained, but is about 10 to 30 meshes, and usually 150 to 650 mm. Wire mesh (1) with a width of
use.

Mountain part (4) of zigzag side edge (3) of wire mesh cut piece (2)
The shape and size of the tapered product (6) differs depending on the depth and size of the tapered product (6). The more it is, the closer the peak (4) becomes to a quadrangle. Of course the product (6
) is larger, the peak (4) is larger.

Mechanical cutting using a pair of upper and lower rotating cutting blades is used to cut the strip wire mesh (1) in a zigzag shape in the length direction.
Examples of cutting methods include gas cutting and electrical cutting, but in any case, the wire mesh (1) is cut by reciprocating the cutting member by a predetermined distance left and right while feeding the long three-band plain weave wire mesh (1) forward. ) is cut continuously in a zigzag pattern. In this case, by adjusting the forward feeding speed of the wire mesh (1) and the speed of the left and right reciprocating movement of the cutting member, the zigzag-shaped side edge (3) of the wire mesh cut piece (2) can be cut.
The shape and size of the peak (4) can be adjusted.

Note that it is also possible to manually cut the strip wire mesh (1) in a zigzag shape in the longitudinal direction using scissors, but this tends to be inaccurate and the speed is slow, so it is not possible to cut it automatically using the above-mentioned method. It is preferable to cut the band-shaped wire mesh (1) continuously.

Note that a stainless steel plate collar (7) is provided on the upper edge of the wire mesh tapered product (6) shown in FIG.

FIG. 4 shows a modification of the method of the present invention, and the difference from the above-mentioned FIGS. 1 and 2 is that
) are cut in a zigzag shape when viewed from the plane, so that the distance between them is open and closed, respectively, to form three wire mesh cut pieces (2). In this modified example a3, among the three wire mesh cut pieces (2), the central wire mesh cut piece (2a) in particular has zigzag-shaped side edges (3) formed on both sides thereof, and faces each other. Since the substantially rectangular portion formed by the peaks (4) is shaped as if it were continuous, loss of the wire mesh (1) can be reduced by sequentially punching out the substantially rectangular portions of the wire mesh cut piece (2a). The advantage is that there are very few.

It is also possible to cut the middle part of the width of the band-shaped flat-stitched wire mesh (1) in a zigzag shape at three or more locations, but generally the wire mesh (1) is easy to move during cutting, and it is difficult to avoid misalignment. Therefore, it is preferable to cut the middle part of the width of the band-shaped wire mesh (1) at one or two places.

5 to 8 show specific examples of the wire mesh cutting device used in the method of the present invention.

- In this specific example, front and back, left and right are based on Figure 6, and the front refers to the upper side of Figure 6, and the rear refers to the lower side of Figure 6.)
, left means the left side in the figure, and right means the right side in the figure.

In Figures 5 to 8, a pair of left and right frames (10) (10) are formed by a belt-shaped plain woven wire mesh (1) wound into a coil.
It is supported by a shaft (11) fixed at the rear end of the shaft. The wire mesh strip (1) has two upper rollers (13)
(13) and one lower roller (14), the wrinkles are smoothed out by the smoothing device M (12) and sent forward. The left edge of the belt wire mesh (1) is
A guide member (
15) to position the wire mesh (1). The band-shaped wire mesh (1) is cut at the center of its width in a zigzag shape when viewed from a plane in the length direction by a pair of upper and lower rotatable circular cutting blades (16). The cutting blades (16) (16) are attached to a pair of upper and lower rotating shafts (17) (17) that are parallel to each other so as to face each other, and are slidable left and right with respect to these rotating shafts (17) (17). is being done. That is, the rotation axis (17
) (17) has three keys (18
) is provided, for which a cutting blade (16) (16)
these keys (1) in the sleeves (16a) (16a')
There are three keyways (19) into which the cutting blades (1B) (16) are fitted, so that the cutting blades (1B) (16) rotate together with the rotating shafts (17) (17), respectively, and (17) It can slide left and right with respect to (17).The cutting blade slide device @ (20) is composed of an air cylinder, which is attached to the base near the outside of the left frame (10). (21) Blown on top -
Ru. A mounting plate (23) is fixed to the tip of the piston rond (22), and a pair of upper and lower connecting members (24) are provided horizontally on the mounting plate (23) so as to extend to the right. ) has a cutting blade (16
) The cutting blade (1G) is connected to the sleeve (16a) (16a) of (16) so as to allow rotation of (16). Therefore, by moving the piston rod (22) of the slide device (20) in and out, the pair of upper and lower cutting blades (16) (16) slide from side to side while rotating, cutting the wire mesh strip 1) in one direction. It also cuts in a zigzag shape when viewed from a plane. Note that the cutting blade (16) (
1G) rotational drive mechanism is omitted.

Two pieces of wire mesh cut in this way (2), (
2> are respectively wound up by a pair of left and right winding rollers (26) (26) attached to the front end of the frame (10) (10) by rotating shafts (25) (25). In addition, the distance between the wire mesh cut pieces (2) (2) should be at least 20 mm so that the zigzag-shaped side edges (3) (3) of the wire mesh cut pieces (2) (2) do not get entangled with each other immediately after cutting.
It is preferable to leave a gap between the winding rollers (2
6) (2G) is a winding motor (27) (27
) The wire mesh cut piece (2) with the zigzag side R (3) obtained in this way is then fed to a punching machine (not shown), where each ridge of the zigzag side edge (3) is cut out. A substantially rectangular shape is sequentially punched out so as to include the portion (4). The substantially rectangular wire mesh punched piece (5) is further supplied to a drawing device,
A tapered product (6) is obtained by squeezing the central portion while holding down the peripheral edge of the tapered product (6).
Since the one disclosed in Japanese Patent No. 7978 can be used, its explanation is omitted.

In addition, in the above specific example, [yo, cutting blade (16) (16
) is exemplified as a slide Mfflt (20) made of an air cylinder, but it is also possible to slide the cutting blade (16)' (16) left and right using a cam mechanism or the like. In this case, it is preferable that the cutting blades (16) (16) be rotated and slid by using the power transmitted from the same motor by causing the cam mechanism to act on the rotation driving shaft.

In addition, in the modification shown in Fig. 4, a pair of upper and lower cutting blades (1
6) It is necessary to arrange a total of two sets of (16) on both the left and right sides, but these cutting blades (16) (1G
) may be made to slide in opposite directions by using a suitable linkage.

In addition, in the specific example, the cut piece of wire mesh (2) (2) having the zigzag side edge (3) - the oral counter roller (2G) (26)
After winding it up, it is fed to a punching machine and punched out. For example, by installing the punching machines on both the left and right sides of a predetermined position in front of the wire mesh cutting device, it is possible to cut zero.
January (16) (16) The wire mesh cut pieces (2) (2,) cut in a zigzag shape by (16) are rolled (26) (2
6) It is also possible to continue punching out the material without winding it up.

As described above, the method for manufacturing a tapered product made of wire mesh according to the present invention is a belt-like plain weave consisting of vertical lines (1a) extending in the length direction and horizontal lines (1b) knitted orthogonally to the vertical lines (1a). The wire mesh (1) is cut in a zigzag shape in the longitudinal direction in the width direction when viewed from the plane to form at least two wire mesh cut pieces (2), and then the wire mesh cut pieces (2) are cut into two pieces. A substantially rectangular wire mesh punched piece that is punched out in a substantially square shape so as to include each peak (4) of the zigzag side edge (3), and the vertical line (1a) and the horizontal line (1b) constitute two diagonal lines. (5) is formed in large numbers, and each wire mesh punched piece (5) is pressed at its peripheral edge and squeezed at the center to create a tapered product (
6), it is possible to continuously manufacture the wire mesh tapered product (6), and therefore the production efficiency is very high.Moreover, there is less loss of wire mesh (1), so the wire mesh tapered product (6) can be manufactured continuously. This has the effect of significantly reducing the manufacturing cost of the tapered product (6).

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a plan view of a band-shaped wire mesh showing the cutting process, and Fig. 2 is a plan view of a band-shaped wire mesh showing the punching process. Fig. 3 is a tapered wire mesh. A perspective view of the product, FIG. 4 is a plan view of a band-shaped wire mesh showing the beating process in a modified example, and FIG. 5 is a schematic side view of the cutting device used in this invention with one frame removed. , 6th
The figure is an enlarged plan view of the same cutting device, and Fig. 7 is Fig. 6 v■-■
FIG. 8 is an enlarged sectional view taken along the line ■-■ in FIG. 6. (1)... Band-shaped plain woven wire mesh, (2)... Wire mesh cut piece,
(3)...Zigzag side edge, (4)...crest, (5
)...Punching piece, (6)...Wire mesh chill pie product, (12)...Wrinkle smoothing device, (16>...Rotating cutting blade, (20)...Sliding device, ( 26)...
・Take-up roller. Patent applicant Mikio Inoue 1 Figure 8

Claims (1)

[Claims] A belt-shaped plain woven wire mesh (1
) is cut in a zigzag shape in the length direction when viewed from the plane to form at least two wire mesh cut pieces (2), and then the wire mesh cut pieces (2) are cut on the zigzag side of the cut wire mesh pieces (2). A large number of substantially square wire mesh punched pieces (5) are punched out in a substantially square shape so as to include each peak (4) of the edge (3), and the vertical line (1a) and the horizontal line (1b) constitute two diagonal lines. form,
A method for manufacturing a tapered product made of wire mesh, characterized in that a tapered product (6) is formed by squeezing the center portion of each wire mesh punched piece (5) while pressing the peripheral edge thereof.