JP3208327B2 - End bending method and apparatus for metal sheet panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end portion of a metal plate panel in which a back surface of a metal plate is lined with a heat insulating material, the metal plate extends from an edge of the heat insulating material, and the extended piece is bent toward the back side. More specifically, the present invention relates to a technique for preventing an outer surface of a bent piece from being damaged when bending an extended piece toward a back surface side.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 11, a heat insulating material 3 is lined on a back surface of a metal plate 1 and a metal plate 1 is extended from an edge of the heat insulating material 3. In this case, the movable mold E is moved with respect to the fixed mold D to be bent.

[0003]

However, according to such means, the movable mold E comes into sliding contact with the outer surface of the extension piece 1a, and the outer surface of the extension piece 1a is scratched, so that the metal plate panel is damaged. There is a problem that the appearance of Aa is greatly reduced. The present invention has been made in view of such a problem, and when bending an extended piece to the back side, it is possible to prevent the outer surface of the bent piece from being damaged by bending the end portion of the metal plate panel. It is an object to provide a method and an apparatus.

[0004]

According to the first aspect of the present invention, the heat insulating material 3 is lined on the back surface of the metal plate 1, and the heat insulating material 3 is provided.
A metal plate 1 is extended from an edge of the metal plate panel, and the extended piece 1a is bent toward the back side.
The end face of the heat insulating material 3 is brought into contact with a positioning pusher 5 protruding from the bending slide mold 4 by a predetermined distance to position the panel intermediate product, and the extended piece 1a of the positioned panel intermediate product is slidable. After being sandwiched by the bending slide mold 4 and the positioning pusher 5 is withdrawn, the extension piece 1 is bent by the bending tension mold 6 disposed at the rear of the bending slide mold 4.
a, and pulls the inner surface of the extension piece 1a to the corner 4c at the rear end of the sliding die 4a on the rear surface of the sliding die 4 for bending. Let me touch
The extension piece 1a is bent to the back side.

According to the second aspect of the present invention, the heat insulating material 3 is lined on the back surface of the metal plate 1, the metal plate 1 is extended from the edge of the heat insulating material 3, and the extended piece 1a is bent toward the rear surface. An end bending device for a panel panel, wherein a positioning pusher 5 for positioning the end surface of the heat insulating material 3 by projecting the end surface of the heat insulating material 3 from the bending slide mold 4 by a predetermined distance and abutting the panel intermediate product; A bending slide mold 4 for slidably holding the extension piece 1a of the panel intermediate product, and a bending slide mold 4 in a state where the positioning pusher 5 is withdrawn.
The inner surface of the extending piece 1a is slid to the corner of the rear end of the sliding mold 4a on the back side of the sliding mold 4 for bending by clamping and pulling the tip of the extending piece 1a. And a bending tensile mold 6 for bending the extension piece 1a to the back side in contact therewith.

[0006] In the structure of claim 1 and claim 2,
The leading end of the extension piece 1a is clamped by the bending tension mold 6 and pulled toward the back side, and with this tension, the extension piece 1a is moved between the sliding molds 4a and 4b of the bending slide mold 4. , And the extension piece 1a is bent by sliding the back surface of the extension piece 1a into contact with the corner portion 4c of the sliding mold 4a on the back side. The back surface of the extension piece 1a is scratched, Are not damaged and the appearance of the metal plate panel A is not deteriorated.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. Both ends of the front and back metal plates 1, 1 sent out by the feeding device are formed by roll forming, for example, as shown in FIGS. 6, 7 and 9, a fitting convex outer skin portion 14a and a fitting concave portion. An outer skin portion 15a is formed, and a rock wool material 3a and a calcium silicate 3b as a heat insulating material 3 are loaded between the two metal plates 1 and 1. The calcium silicate 3b has high fire resistance and high mechanical strength, and is loaded into the fitting convex outer skin portion 14a and the fitting concave outer skin portion 15a to improve the fire resistance and mechanical strength of the fitting convex portion 14 and the fitting concave portion 15. Is increasing. In the two metal plates 1, a slight gap is formed between the fitting convex portion 14 and the fitting concave portion 15 so as to avoid heat transfer between the two metal plates 1. .

A nailing portion 7 is formed on the fitting recess 15 side,
The receiving portion 9 is formed slightly higher than the nailing portion 7.
Is slightly lower than the front surface 1b. A cover piece 8 extends to the fitting protrusion 14 side, and the fitting protrusion 14 and the fitting recess 15
In the fitting state, the cover piece 8 covers the nailing portion 7 and is mounted on the receiving portion 9. At both side edges of the panel adjacent to the edge where the fitting projection 14 and the fitting recess 15 are formed, as shown in FIG.
The heat insulating material 3 and the other metal plate 1 are cut except for the metal plate 1 (which is on the front surface side in the construction state), and the remaining metal plate 1 is extended from the heat insulating material 3 to form an extension piece 1a. The extension piece 1a is bent so as to face the side end surface of the heat insulating material 3, and the connection piece 16 is formed. In this case, on both side edges of the connection piece 16, shielding pieces 20, which are continuous with the metal plate 1 serving as the front surface 1 b in the construction state and have surfaces in a direction orthogonal to the connection piece 16, are formed by bending.

The shielding piece 20 is formed on the fitting convex part 14 and the fitting concave part 15 side. FIG. 6 mainly shows the shielding piece 20 on the fitting concave part 15 side. There is a shielding piece portion 20a formed by extending a step portion with the receiving portion 9 and a shielding piece portion 20b formed by extending a step portion between the receiving portion 9 and the nailing portion 7. The shielding piece 20 on the fitting projection 14 side is formed so as to extend the tip vertical piece 8a of the covering piece 8 toward the connection piece 16 and to face the shielding piece portion 20a. At the tip of the connection piece 16, a joint piece 21 substantially orthogonal to the connection piece 16 is extended outward.

The upper ends of the metal plate panels A, A in FIG. 9 are fitted with the lower fitting projections 14 in the upper fitting recesses 15 and are connected via the packing P. It is done. Hereinafter, an apparatus for forming the connection piece 16 by bending the extension piece 1a will be described in detail. FIG. 4 shows a metal plate panel A.
FIG. 1 shows an explanatory diagram of a production line. At the beginning of the production line, uncoilers 23a and 23b are provided vertically, and a metal plate 1 on a hoop material supplied from the uncoiler 23a is provided in the middle of conveyance. Both end portions in the width direction are roll-formed by the first bending device 24 as described above. Also, as shown in FIG. 5, the metal plate 1 below the hoop material supplied from the lower uncoiler 23b has a punched hole X ( (Indicated by oblique lines in FIG. 5). In such a punched hole X, the preceding panel body part A and the subsequent panel body part B are cut and separated at the cutting line L, and at the cutting position of the line, as described above, the extension of the lower metal plate 1 is performed. The piece 1a is bent and finished.

In this case, as shown in FIG. 5, a release agent Y is applied between the punched holes X, X formed at both ends in the width direction of the metal plate 1, and a release agent Y is formed between the punched holes X, X. The heat insulating material 3 can be easily separated. 2 and 4
As shown in FIG.
A pair of end bending devices B ₁ and B _{2 for} bending the a and la are assembled in the production run so that the extension pieces 1 a and 1 a at the front and rear ends of the cut panel intermediate product can be bent. It is. End bending apparatus B shown in FIG.
Reference numeral ₁ is arranged on the right side in FIG. The pair of end bending devices B ₁ and B ₂ are configured symmetrically to the left and right, and the configuration of the end bending device B ₁ disposed on the right side in FIG. 2 will be described in detail with reference to FIG. End bending device B
Detailed description of the configuration of ₂ is omitted.

As shown in FIG. 1, the end bending device B _{1 for} bending the extension piece _{1 a} has a positioning pusher 5. The positioning pusher 5 can be switched between a state in which the cylinder 10 extends to a predetermined position E and a state in which the cylinder 10 contracts and retreats from the position E. (Not shown) so as to be able to retreat above the panel intermediate product transfer line.
The end face of the heat insulating material 3 of the panel intermediate product shown in FIG. 3 is brought into contact with the positioning pusher 5 so that the panel intermediate product can be positioned at a predetermined position.

Further, the end bending device B ₁ strongly sandwiches the bending slide mold 4 for slidably holding the base end of the extension piece 1 a and the tip end of the extension piece 1 a, A bending tension die 6 for pulling the panel intermediate product together with the extension piece 1a is provided. The folding sliding die 4 includes sliding dies 4a and 4b disposed on the front and back (up and down in FIG. 1) of the metal plate panel A, and the sliding die 4a on the back surface (upper) is formed in, for example, an L shape. Although not shown, it can be raised and lowered by lifting means such as a cylinder. Sliding type 4 on the front side
b has a weak spring 4c.

The bending tension mold 6 is a metal plate panel A
Of the front side (lower) is formed in, for example, an L-shape, and can be raised and lowered by a lifting means such as a cylinder (not shown). It is. The tension mold 6a on the back side has a spring 6c having a stronger spring force than the spring 4c of the slide mold 4b.

Then, as shown in FIG. 1A, the positioning pusher 5 is lowered, and the end face of the heat insulating material 3 as a panel intermediate product is projected from the folding sliding mold 4 by a fixed distance. 5, the panel pusher 5 is retracted, the positioning pusher 5 is retracted, and further escapes from the transport line by the ascending means. The pulling die 6 enters the transport line. Thus, the positioned extension piece 1a of the panel intermediate product is slidably clamped between the sliding dies 4a and 4b on the front and back sides of the sliding sliding die 4 (see FIGS. 1B and 1C). Then, with the sliding mold 4a above the bending slide mold 4 fixed, the tension mold 6b below the bending tension mold 6 is raised, and is disposed at the rear of the bending slide mold 4. The front end of the extension piece 1a is sandwiched by the tension molds 6a and 6b on the front and back sides of the bending mold 6 for bending, and is pulled toward the back side. The extension piece 1a is bent toward the back side by slidingly contacting the corner 4c at the rear end of the slide mold 4a on the back side of the slide mold 4.

As described above, the front end of the extension piece 1a is sandwiched by the tension dies 6a and 6b on the front and back sides of the bending tension die 6, and is pulled toward the rear side. Is slided between the sliding dies 4a and 4b of the bending slide mold 4, and the back surface of the extension piece 1a is brought into sliding contact with the corner 4c of the sliding mold 4a on the back side to bend the extension piece 1a. Although the back surface of the extension piece 1a is scratched, the front surface is not scratched and the appearance of the metal plate panel A is not deteriorated.

[0017] Incidentally, the end bending apparatus B ₁ positioning pusher 5 becomes the first positioning means 30A, end bending apparatus B ₁ fold for sliding mold 4 and folding for tensile die 6
Constitute the first bending means 6A, and the positioning pusher 5 of the end bending device B2 is used as the _second bending means 30B.
Next, folding for sliding mold 4 and folding for tensile die 6 of the end bending apparatus B ₂ is intended to constitute the second folding means 6B.

According to the present invention, when the panel intermediate product having the extension piece 1a extended from the front and rear end surfaces of the heat insulating material 3 is conveyed forward, the front end surface of the heat insulating material 3 of the panel intermediate product is received. The first positioning means 30A for positioning the panel intermediate product by the hand, the first bending means 6A for bending the extended piece 1a of the positioned panel intermediate product to the back side, and the extension piece 1a at the tip is bent. A second positioning means 30B for receiving the rear end surface of the heat insulating material 3 of the panel intermediate product and positioning the panel intermediate product when the panel intermediate product is advanced after moving over the first bending means 6A, A second folding means 6B for bending the positioned extension piece 1a of the panel intermediate product to the back side, the first positioning means 30A, the first folding means 6A and the second positioning means 30B, the second positioning Means 30B Causes close back and forth during the emission is obtained by rush and escape freely configured from the top and bottom with respect to the conveying surface of the workpiece.

[0019]

According to the first aspect of the present invention, the panel intermediate product is positioned by bringing the end surface of the heat insulating material into contact with a positioning pusher projecting a predetermined distance from the bending slide mold. After the extension piece of the product is slidably clamped by the bending slide mold and the positioning pusher is retired, it is extended by the bending tension mold arranged at the rear of the bending slide mold. The tip of the piece is pinched and pulled to the back side, and with this pulling, the inner surface of the extension piece is slid into contact with the corner of the rear end of the sliding mold on the back side of the bending slide mold, Since the extension piece is bent to the back side, the tip end of the extension piece is sandwiched between the front and back tensioning dies of the bending tension die and pulled toward the back side, and the extension piece is bent with this pulling. Slide between the sliding dies on the back side of the extension piece The extension piece is bent by sliding contact with the corner, and the back side of the extension piece is scratched, but the surface is not scratched and the advantage of not deteriorating the appearance of the metal plate panel There is.

According to the second aspect of the invention, there is an advantage that the same operation and effect as the first aspect of the invention can be obtained.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, wherein (a) to (d) are diagrams for explaining the operation of one end bending device of the present invention, and (e) is a schematic view of an end of a metal plate panel. It is sectional drawing.

FIG. 2 is a diagram illustrating an arrangement of an end bending device.

FIGS. 3A and 3B are diagrams illustrating the operation of the other end bending device.

FIG. 4 is a diagram illustrating a production line.

FIG. 5 is an explanatory diagram showing holes punched by a punching unit.

FIG. 6 is a partial perspective view of the front side of the produced metal plate panel from the front side of the metal plate.

FIG. 7 is a partially omitted side view of the metal plate panel.

8 (a) and 8 (b) are partial side views.

FIG. 9 is a partially omitted cross-sectional view showing a connection state of a metal plate panel.

FIGS. 10A, 10B and 10C are partial schematic perspective views of a production process.

11A is a diagram showing an operation of a conventional example, and FIG. 11B is a schematic sectional view of a metal plate panel of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal plate 1a Extension piece 3 Insulation material 4 Bending sliding mold 4a Sliding mold 5 Positioning pusher 6 Bending tension mold

Claims (2)

(57) [Claims] 1. A method for bending an end of a metal plate panel, wherein a back surface of a metal plate is lined with a heat insulating material, a metal plate is extended from an edge of the heat insulating material, and the extended piece is bent toward the back surface. The end face of the heat insulating material is brought into contact with a positioning pusher that protrudes from the mold by a certain distance from the bending slide to position the panel intermediate product, and the extended piece of the positioned panel intermediate product is slid freely for bending. After holding by the mold and retreating the positioning pusher, the tip of the extension piece is sandwiched and pulled to the back side by the bending pulling die provided at the rear of the bending slide die, Along with this pulling, the inner surface of the extension piece is brought into sliding contact with the corner of the rear end of the sliding mold on the back side of the sliding mold for bending, and the extension piece is bent to the back side. Bending method of metal plate panel. 2. An end bending apparatus for a metal plate panel, wherein a back surface of a metal plate is lined with a heat insulating material, a metal plate is extended from an edge of the heat insulating material, and the extended piece is bent toward the back surface side. A positioning pusher that projects the end face of the heat insulating material from the bending slide mold by a certain distance to abut on the panel intermediate product to perform positioning, and a fold that slidably holds the positioned extension piece of the panel intermediate product With the bending slide mold and the positioning pusher retracted, it is arranged at the rear of the bending slide mold, and clamps the tip of the extension piece to pull and bend the inner surface of the extension piece An end of a metal plate panel, comprising: a bending tension die for sliding an extension piece toward a back surface side by slidingly contacting a corner of a rear end of the slide die on the back surface side of the metal mold. Part bending device.