JPS587372B2 - Metal lath manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that a substantially rigid linear portion extends obliquely from the top of one connection to the bottom of the next connection and projects upwardly on the upper surface near the top of the connection. The present invention relates to an apparatus for manufacturing a metal lath in which protrusions are formed and concave portions are formed on the upwardly facing side surfaces.

Relatively thick metal plate, generally about 3 to 8 mm thick. Metal lath that is manufactured by cutting and stretching a steel plate, and has connecting parts (bonds) arranged in a staggered manner and thick linear parts (strands). Because it has almost no flexibility and can support large loads, it is often used in place of regular racks for sidewalks or inspection stands in factories, scaffolding stands at construction sites, etc. In order to prevent oil, etc. from falling through the mesh and accumulating, the linear part slopes from the top of one connecting part to the bottom of the next connecting part, and the entire surface is formed into a wavy pattern, making the soles of the worker's shoes uneven. Combined with their interlocking, there is less worry about slipping and there is a high level of safety.

However, even when such metal lath is installed in a factory, work site, etc., it gradually wears out during repeated walking by workers, carrying cargo, etc., and the surface becomes rounded and smooth, becoming slippery in a relatively short period of time.

Therefore, as shown in FIGS. 8 to 11, a rigid linear portion 1 with a substantially square cross section surrounding the mesh 3 extends obliquely from the top of one connecting portion 2 to the bottom of the next connecting portion 2. In a metal lath whose entire surface is formed into wave-like unevenness, for example, the upper surface 2a of the connecting portion 2 and the linear portions 1, which extend from the top to the bottom of the linear portions 1, 1 adjacent to each other in a staggered manner on both sides. 1 are formed with upwardly projecting protrusions 4, 4.4 on the upper surfaces 1a, 1a of the portions 1, 1, respectively. A recess 5 extending to an appropriate depth from the upper surface 2a, 1a, 1a in the same part corresponding to the projection 4, 4.4 of 1b,
5, 5, it becomes possible for these protrusions 4 and recesses 5 to mesh sharply with the sole of the shoe and engage with each other, thereby exhibiting an excellent anti-slip function over a long period of time.

The present invention thus forms protrusions and recesses near the top of the connecting part at the same time as making cuts in an uncultivated metal plate and expanding it, thereby making it possible to manufacture the required meklulas in one step.

Embodiments of the present invention will be described below with reference to the drawings. A horizontal guide table 11 for feeding the raw metal plate 9 in one direction and a fixed base extending in the width direction of the metal plate 9 are provided at the front ends of the feed rolls 12 and 12. A blade 13 is disposed, and a ram 15 is supported by a frame 14 and moves vertically and horizontally as indicated by arrows V and L in FIG. An upper blade 17 is mounted on a holder 16 which is attached so that its direction can be adjusted.

The upper blade 17 consists of a predetermined number of unit bodies with a suitable wall thickness in which a plurality of alternating peaks 17a and troughs 17b are connected, and is fixed by tightening bolts 18 to the rearward end surface of the holder 16. When the metal plate 9 placed on the metal plate 9, which has moved forward while being clamped by the feed rolls 12 and 12, protrudes slightly forward from the lower blade 13, generally by approximately the thickness, the upper blade 17 and the restraining member 19 descend and cooperate with the lower blade 13. The peaks 17a stretch the metal plate 9 while making cuts and cutting by shearing, and the valleys 17 extend from the upper surface of the lower blade 13 by half the length L/2 of the mesh 3 (see FIG. 8).
When a goes down, it goes up, and then the half width of mesh 3 W/
The metal lath 10 is manufactured by repeating the operation of moving the upper blade 17 in the left and right direction by 2 (see FIG. 8) and lowering it to perform cutting and stretching. Continuously send downward.

A flat die 22 having a punch 21 projecting downward is arranged on the lower edge of the upper blade 17 so as to overlap the rearward end surface thereof, and is fixed to the holder 16 together with the upper blade 17 with a bolt 18. .

Three punches 21 are provided at the center of each crest 17a of the upper blade 17 and at close locations on both sides thereof, and are positioned on the extension line of these punches 21, and are provided on the rearward end surface of the upper blade 17. A relief groove 23 extending in the direction is provided.

The lower end surface of the punch 21 is positioned appropriately above the crest 17a according to the cutting and stretching stroke of the upper blade 17, and when it descends the most, it touches the tip edge of the metal plate 9 resting on the front edge of the upper surface of the lower blade 13. It is designed to penetrate to an appropriate depth.

In this embodiment, in which the die 22 having the punch 21 is stacked on the upper blade 17 of the known device, the operation is exactly the same as the conventional one as described above, and the metal plate is removed from the front edge of the upper surface of the lower blade 13. When the front edge of 9 protrudes slightly, the upper blade 1 above it
7 starts to descend (Fig. 5), and the peaks 17a of each upper blade 17
The metal plate 9 bites into the metal plate 9 all at once, makes a cut in cooperation with the lower blade 13, and continues to descend while being stretched and cut by shearing action (6th
), the metal plate 9 on which each punch 21 rests on the front edge of the upper surface of the lower blade 13 when descending by approximately half the length of the mesh 3
The protrusion 4 is bitten into contact with the tip edge of the metal plate 9 to form a recess 5 of an appropriate depth, and the flesh of the metal plate 9 is pushed out into the relief groove 23 to form the protrusion 4.
(See Figure 7).

During this time, the metal plate 9 is held between the holding member 19 and the guide stand 11.

Next, the upper blade 17 and the restraining member 19 rise, and the upper blade 17 moves in the left-right direction, then descends again and repeats the above operation.

The top surface of the mountain portion 17a forms the connecting portion 2 of the metal lath 10.

It goes without saying that the punch 21 may be integrally formed with the upper blade 17.

Also, the escape groove 23 may be omitted because it reduces the shearing function of the upper blade 17 that cooperates with the lower blade 13, but the punch 21
The upper blade 17 is pushed by the protrusion 4 pushed out by the lower blade 13, causing play, so it is actually better to provide it with the minimum necessary width.

Furthermore, the positions of the protrusions 4 and recesses 5 formed on the metal lath 10 can be set as appropriate, and the number thereof can be one to five near the top of each connecting part, and furthermore, these protrusions 4 and recesses 5 are provided at all the connecting parts. It goes without saying that the number and position of the punches 21 can be selected so that the punches 21 are not provided nearby, but are formed, for example, at every other or every second location in the left and right direction of the metal lath 10.

As described above, the present invention provides a metal lath manufacturing apparatus equipped with a fixed lower blade and an upper blade having peaks and troughs and moving in vertical and horizontal directions. It is equipped with a punch that bites into the tip edge of the metal plate resting on the lower blade when the upper blade is lowered, so the upper blade moves vertically and horizontally while feeding the raw metal plate forward, and the lower blade By making cuts and stretching in cooperation with the metal lath, a metal lath is manufactured in which the linear part extends obliquely from the top of one joint to the bottom of the next joint. A recess is formed on the upward side surface by a punch, and the metal plate extruded thereby protrudes upwardly to form a protrusion.

Therefore, when used on a factory sidewalk or inspection stand, or a scaffolding at a construction site, small protrusions and recesses are formed on the upward facing surface near the top where the sole contacts, providing excellent anti-slip properties over a long period of time. Effective metal lath formation and protrusion and recess formation can be performed in one step, and required metal laths can be easily manufactured with the same efficiency as conventional metal lath manufacturing.

Further, the device of the present invention can be provided by simply replacing the upper blade of an existing device or adding a punch, and has excellent effects such as being extremely simple to implement.

[Brief explanation of the drawing]

Fig. 1 is a front view schematically showing the device according to the present invention, Fig. 2 is a side view, Fig. 3 is a perspective partial view of an example of an upper blade equipped with a punch, and Fig. 4 is a bottom view of Fig. 3. 5, 6, and 7 are partial vertical cross-sectional views showing the manufacturing process, FIG. 8 is a partial plan view showing an example of metal lath manufactured by the apparatus of the present invention, and FIG. Cross-sectional view along line A-A, 1st
0 and 11 are enlarged sectional views taken along lines B--B and C--C in FIG. 8. 13...Lower blade, 14...Frame, 16...Holder, 1
7... Upper blade, 17a... Mountain part, 17b... Valley part, 21...
...Punch, 22...Die, 23...Escape groove.

Claims (1)

[Claims] 1 Fixed lower blade 13, peaks 17a and troughs 17b
In the metal lath manufacturing apparatus, the lower blade 13 is positioned above the ridge 17a of the rearward end face of the upper blade 17 when the upper blade is lowered.
A metal lath manufacturing apparatus characterized by being provided with a punch 21 that punches into the tip edge of a metal plate placed on the metal lath.