JPH09158138A - Panel for fence and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of execution of construction of a fence by integrating a punched metal and an expanded metal into a panel for the fence. SOLUTION: A panel for a fence is constructed by a method wherein a punched metal A having a large number of round holes 7 made by punching and to be provided partly and an expanded metal B having polygonal openings 8 formed by pressing down the metal are made continuous to each other integrally. The expanded metal B is formed in the shape of a complete plate by pressing-down and the plate thickness thereof is made to accord with that of the punched metal A. For the polygonal openings 8 formed in the expanded metal B, conditions of a slit length, a slit spacing, a length of pushing of a cutting edge, etc., can be regulated. According to this constitution, arbitrary drawing of patterns and also shortening of a period of execution of construction of the fence are enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fence panel and a method for manufacturing the fence panel, and more particularly to a fence panel having a large number of circular holes formed by punching, and the remaining part formed by pressing down expanded metal. The present invention relates to a fence panel having a rectangular opening and a method for manufacturing the fence panel.

[0002]

2. Description of the Related Art Conventionally, as a fence incorporating a panel, Japanese Patent Laid-Open No. 6-264419 discloses a fence as shown in FIG. This fence is constructed by fixing a vertical cauldron 2 and a panel 3 between columns 1 via a horizontal furring strip 4.

The panel 3 has a large number of small holes 5 in its upper and lower portions.
Are formed by punching, and various patterns 6 are drawn in the portion where the small hole 5 in the central portion is not formed.

According to the fence described above, since the small holes 5 are formed in the panel 3, there are advantages such as excellent transparency, openness and air permeability.

[0005]

However, the fence described above has the following problems. Since it is necessary to separately secure the vertical shaft 2 and the panel 3 to the furring strip 4, it takes time to construct the fence. Since the panel 3 and the furring strip 4 are usually fixed with bolts or the like, the panel 3 is easily dropped or stolen.

In the fence described above, when the fence is constructed by replacing the vertical shaft 2 with the expanded metal, the punching metal and the expanded metal are not well connected, which is aesthetically unfavorable. This is for the following reason.

Expanded metal is manufactured by pressing a plurality of slits at intervals on a steel plate while forming the slits, thereby forming polygonal openings in the steel plate. Therefore, as shown in FIG. 6, the plate thickness (t) of the expanded metal is thicker than the plate thickness of the steel plate before the tension is applied in the state as it is, and does not match the plate thickness of the punching metal. Moreover, the edge of the polygonal opening formed in the expanded metal has an acute angle, which is dangerous.

Therefore, an object of the present invention is to construct a fence panel by integrally forming punching metal and expanded metal, so that the fence can be constructed in a short time, the panel is unlikely to fall off or be stolen, and the cost is low. It is an object of the present invention to provide a fence panel that can be manufactured, has an excellent aesthetic appearance, and that the edge of the expanded metal polygonal opening is not an acute angle and is safe.

[0009]

According to the first aspect of the present invention,
It is characterized by having a large number of circular holes partially formed by punching, and having a polygonal opening formed by pressing down expanded metal in the rest.

According to a second aspect of the present invention, a plurality of polygonal openings are formed at predetermined intervals in a part of the steel sheet moving along the conveyor line by an expander installed in the conveyor line of the steel sheet. Then, by a reduction roll installed subsequently to the expand forming machine, a reduction is applied to the steel sheet on which the polygonal opening is formed to form the polygonal opening portion flatly, and subsequently to the reduction roll. It is characterized in that a large number of circular holes are formed in the remaining surface of the steel sheet in which the polygonal openings are not formed by a punching machine installed as above.

The invention according to claim 3 is characterized in that the punching machine forms the circular hole in a part of the steel plate before the polygon forming opening is formed in the steel plate by the expanding machine. It is a thing.

According to a fourth aspect of the present invention, the steel sheet is wound around a coil, and the steel sheet is cut into predetermined lengths by a cutting machine installed upstream of the expander. It has characteristics.

The invention according to claim 5 is characterized in that the steel sheet having the circular holes formed by the punching machine is coated by a coating machine installed subsequent to the punching machine. is there.

The invention according to claim 6 is characterized in that the steel plate having the polygonal openings flattened by the reduction roll is coated by a coating machine installed subsequent to the reduction roll. I have.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a fence panel of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing a fence panel of the present invention, FIG. 2 is a partial plan view showing a punching metal, and FIG. 3 is a process drawing showing the method for manufacturing a fence panel of the present invention. FIG. 4 is a process drawing showing another method for manufacturing a fence panel according to the present invention.

As shown in FIG. 1, the fence panel of the present invention has a large number of circular holes 7 formed in one part by punching, and a polygonal opening formed by pressing down expanded metal in the rest. 8 (hexagon in this example). That is, part of the fence panel of the present invention is punching metal A.
And the other part is made of expanded metal B formed integrally and continuously with punching metal A. In this way, the punching metal A and the expanded metal B are integrally continuous with each other, so that they have an excellent appearance.

The punching metal A is, for example, as shown in FIG. 2, small-diameter holes 7A formed in a lattice shape on the entire steel plate.
And a large diameter hole 7B formed between the small diameter holes 7A,
The design can be freely drawn depending on the presence or absence of the large diameter hole 7B.

The expanded metal B is completely formed into a plate shape by applying a reduction, and the plate thickness matches the plate thickness of the punching metal A. The polygonal opening 8 formed in the expanded metal B can be changed into various shapes by adjusting the conditions such as the slit length, the slit interval, and the pressing length of the cutting blade.

In order to incorporate the panel of the present invention into a fence, the edge of the panel may be curved, or a furring strip may be attached to the edge of the panel and placed between the columns. Next, with regard to the method for manufacturing the fence panel of the present invention,
This will be described with reference to the manufacturing process chart of FIG.

The original plate wound into a coil is cut into a predetermined length by a cutting machine 9. The steel plate for a panel cut into a predetermined length is sent to the expand forming machine 10, where a plurality of slits are formed at intervals on the steel plate by the cutting blade, and the cutting blade is pushed to form a polygonal opening. 8 is formed.

Next, the steel sheet having the polygonal openings 8 formed in this manner is subjected to reduction by a reduction roll 11. As a result, the polygonal openings 8 of the steel sheet are formed flat, and the thickness of the steel sheet is uniform over the entire surface. next,
The steel sheet in which the polygonal opening 8 portion is formed flat in this way is sent to the punching machine 12, where the steel sheet portion in which the polygonal opening 8 is not formed is punched.
Circular holes 7 (7A, 7B) representing patterns are formed. Next, the panel in which the polygonal opening 8 and the circular hole 7 are formed in this manner is sent to the coating machine 13 to be coated. In this way, the fence panel of the present invention is manufactured.

The lengths of the punching metal A and the expanded metal B can be freely changed by changing the feed length of the steel sheet, and no opening is formed by neither punching nor expanding. It is also possible to leave the steel plate as it is.

Before forming the polygonal opening 8 in the original plate, a circular hole may be formed in the steel plate by a punching machine 12. In this case, as shown in FIG. 4, the cutting machine 9, the punching machine 12, the expand forming machine 10, the reduction roll 11, and the coating machine 13 may be arranged in this order, whereby the same as in the case described above. In addition, the fence panel of the present invention is automatically manufactured.

The original plate may not be wound in a coil shape, but may be a cut plate cut into a predetermined length.

[0026]

As described above, according to the present invention, by constructing the fence panel by integrating the punching metal and the expanded metal, the fence can be installed in a short time, and the panel can be dropped or stolen. Is less likely to occur, can be manufactured at low cost, has an excellent aesthetic appearance, and the edges of the polygonal openings of the expanded metal are safe with no acute angles.

[Brief description of the drawings]

FIG. 1 is a plan view showing a fence panel of the present invention.

FIG. 2 is a partial plan view showing a punching metal in which a small diameter hole and a large diameter hole are formed.

FIG. 3 is a process drawing showing the method for manufacturing a fence panel of the present invention.

FIG. 4 is a process drawing showing another method for manufacturing a fence panel of the present invention.

FIG. 5 is a front view showing a conventional fence in which a panel is incorporated.

FIG. 6 is a partial plan view showing an expanded metal.

[Explanation of symbols]

 1: Strut 2: Vertical board 3: Panel 4: Furring strip 5: Small hole 6: Design 7: Circular hole 7A: Small diameter hole 7B: Large diameter hole 8: Polygonal opening 9: Cutting machine 10: Expanding machine 11: Rolling roll 12: Punching machine 13: Coating machine A: Punching metal B: Expanding metal

Claims (6)

[Claims] 1. A fence panel characterized by having a large number of circular holes partially formed by punching, and having a polygonal opening formed by pressing down expanded metal in the remainder. 2. An expand forming machine, which is installed on a steel plate conveying line, forms a large number of polygonal openings at predetermined intervals on a part of the steel plate moving along the conveying line, Is applied to the steel sheet having the polygonal opening formed thereon to form the polygonal opening portion flat, and a punching machine installed subsequent to the reduction roll. A method for manufacturing a fence panel, characterized in that a large number of circular holes are formed in the remaining surface of the steel sheet in which the polygonal openings are not formed. 3. The circular hole is formed in a part of the steel plate by the punching machine before the polygonal opening is formed in the steel plate by the expanding machine. , Fence panel manufacturing method. 4. The steel sheet is wound around a coil, and the steel sheet is cut into predetermined lengths by a cutting machine installed upstream of the expander. 2. The method for manufacturing a fence panel according to 2 or 3. 5. The steel sheet having the circular holes formed by the punching machine is coated by a coating machine installed subsequent to the punching machine, according to claim 2 or 4. , Fence panel manufacturing method. 6. The steel plate having the polygonal opening flattened by the reduction roll is coated by a coating machine installed subsequent to the reduction roll, according to claim 3 or 4. The method for manufacturing a fence panel according to item 4.