KR101854146B1 - Expansion and contraction blade drive device for a bending device for the fire door panel - Google Patents

Abstract

In the present invention, a blade for expanding and contracting is formed at both ends of a blade for pressing and supporting the upper surface of the panel so as to bend the "C" -shaped bent portion so as to abut on the four sides of the rectangular metal panel constituting the fire door The present invention relates to a blade stretching and driving apparatus for a panel folding apparatus for a fire door, which is constructed to have a fast and simple structure while eliminating interference in a "C" bent portion which is bent at the time of bending. (1), a metal panel is supported on the upper side, and a plurality of blades, which are in close contact with the counter blade, are joined to the plate (3) by fastening pieces (4), and between the counter blade A metal mold (5) for applying a bending force to a metal panel to be processed is joined to a ram The first blade 21 and the last blade 2n of the blade assembly 2 in which a plurality of blade pieces are formed by extending in the transverse direction extend and contract in opposite directions from the adjacent blades respectively And the stretching and shrinking drive unit 6 for providing the expansion and contraction driving force is coupled to the blade 2n-1 immediately before the second blade 22 and the last blade 2n.

Description

[0001] The present invention relates to an expansion and contraction blade drive device for a fire-

The present invention relates to a metal panel bending device, and more particularly, to a metal panel bending device which includes a rectangular panel that forms a fire door, The present invention relates to a blade stretching and driving apparatus for a panel folding apparatus for a fire door, which is formed to have a blade that expands and shrinks and which is fast and operates while eliminating interference in a "C" bent portion which is already bent at the time of bending.

A mechanism, such as a paneling or a bending machine, is known as a device for cutting, bending, and shaping various shapes of a metal panel in the form of a flat plate to produce a desired profile.

The above mechanisms are tools for producing products by shearing, bending and forming a material using properties such as plasticity, malleability, ductility and fluidity, and they are mainly divided into dies and punches , It is known that the panel is mounted on the die and pressed by a linear reciprocating punch to perform various processes such as shearing, bending, and beading.

The movement of the punch is mainly performed by a vertical reciprocating motion, and the mechanisms are mainly divided into special machines such as a shearing machine, a bending machine, a molding machine and the like depending on the use thereof.

On the other hand, the processing of a metal panel made of a fire door has been also made using a bending machine.

As shown in FIG. 1, the conventional fire door is formed by hemming one end of a fire door using a metal panel and bending-molding the rising part 100 corresponding to the thickness of the fire door on four sides. They are bent and welded to each other to form a fire door.

As described above, the standing portion processing which is bent at 90 degrees on the four sides is also inconvenient when it is bent by using a conventional known bending machine.

However, in the structure in which one end is hemming due to reinforcement of the fire resistance standard, it is necessary to manufacture the four sides so as to have a stepped structure having a predetermined depth (d) and a height (h), and the cross- And the grooves 110 are included, which makes it difficult to work with the conventional bending machine.

Since the fire door has a length of at least 2000 mm and the puncture site is provided at a plurality of places, it is impossible to work because a large number of defects occur in the entire metal panel when the two workers lift or lower the conventional bending machine.

This problem results in a dedicated bending machine suitable for bending the groove 110 due to the structure of the groove 110 which is a new fire door reference.

According to the bending device of European Patent No. 873205, as a conventional device to be replaced by a dedicated bending machine, a tool segment located at both lateral ends of a clamping tool segment (upper blade) It is formed so that it rotates 90 degrees while being raised and lowered.

This is because when the opposite end portions of the opposite sides of the panel to be processed are already bent in a "C" shape in the form of a " C " The tool segments are extended to the left and right to avoid interference with the tool segments and to be pressed accurately to the edge portions to be bent. When the tool segments are separated, the extended tool segments are rotated by 90 degrees to be machined.

However, such a dedicated bending machine is very difficult to introduce because of its high cost, and the bending machine is complicated in the structure of the tool segment and requires a driving time according to the interference avoiding structure, so that it is difficult to operate the apparatus at a high speed, .

EP 0873205 B1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to solve the following problems.

The present invention is characterized in that a blade forming expansion and contraction is formed at both ends of an upper blade for fixing a metal panel so as to be suitable for bending by forming a groove on the outer circumference of four sides of a fire door, And to provide a blade stretching and driving apparatus of a panel bending apparatus for a panel.

The present invention provides a blade stretching and driving apparatus for a panel folding apparatus for a fire door capable of easily manufacturing various products by flexibly expanding and contracting blades at both ends of a blade in accordance with the length of a metal panel as a workpiece .

According to an aspect of the present invention, there is provided a method of manufacturing a metal panel, comprising: a counter blade supporting a metal panel to be processed at a lower portion thereof; a plurality of blades, And a mold for applying a bending force to the metal panel between the counter blade and the blade is coupled to the ram. In the panel bending device for a fire door, the first blade piece and the last blade piece of the blade composed of a plurality of blade pieces And the cylinder for providing the expansion and contraction driving force is coupled to the blade immediately before the second blade and the last blade.

And the expansion and contraction distances of the blades forming the expansion and contraction are made to coincide with the depths of the grooves.

The blade length can be adjusted by adding or removing blade pieces between the second blade and the blade just before the last blade.

As described above, according to the present invention, when a groove is formed on the outer circumference of the four sides of a fire door, the blade for expanding and contracting is formed at both ends of the upper blade for fixing the metal panel, And it is expanded to the maximum extent at the time of bending, so that the corner portion of the metal panel is firmly supported, and when it is released after bending, it shrinks to eliminate interference, Since the expansion and contraction are performed by a simple structure by driving the cylinder, it is easy to manufacture the apparatus and the expansion and contraction of both ends of the blade according to the length of the metal panel to be processed. Can be easily replaced by adding or excluding There will be several inventions having excellent effects such as the production of a wide range of standard products available.

1 is an external perspective view showing a metal panel bent by a fire door according to a conventional standard;
2 is an external perspective view showing a metal panel bent by a fire door according to a modified standard.
3 is a side view of the bending device according to the present invention.
4 is a front view of the bending device according to the present invention.
Fig. 5 is an excerpted frontal state configuration diagram showing a blade that undergoes expansion and contraction as a main part of the present invention. Fig.
FIG. 6 is a planar state configuration diagram of the invention of FIG. 5;
7 is a view showing an operation state of essential parts of the present invention.
FIG. 8 is a front view showing a state in which the entire length of the blade of the present invention is reduced and combined. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific technical structure of an embodiment of the present invention will be described with reference to the accompanying drawings.

Referring now to FIGS. 3 to 6, FIG.

The present invention relates to a method of manufacturing a metal plate, which comprises a counter blade (1) for supporting a metal panel to be processed at a lower portion thereof, and a plurality of blades which are in close contact with a counter blade, , And a metal mold (5) for applying a bending force to the metal panel to be machined between the counter blade (1) and the blade is coupled to the ram. In the bending device, a plurality of blade pieces The first blade 21 and the last blade 2n of the blade assembly 2 are formed so as to expand and contract in opposite directions from the adjacent blades respectively and the second blade 22 and the last blade (2n-1) of the blade (2n) is combined with the expanding and contracting drive section (6) for providing the expansion and contraction driving force The.

The expansion and contraction driving unit 6 is constructed by fixing brackets 63 and 65 to the first blade 21 and the second blade 22 respectively and fixing the cylinder 61 to the bracket 65 And is guided by a guide rod 67 which is formed by coupling the cylinder rod to the bracket 63 and is fixed to the second blade 22 and penetrates through the first blade 21 opposite thereto.

The brackets 63 and 65 are fixed to the last blade 2n and the blade 2n-1 immediately before. The cylinder 61 is engaged with the bracket 65 to connect the cylinder rod to the bracket 63 And guided by a guide rod 67 passing through the last blade 2n fixed to the immediately preceding blade 2n-1 and opposed to the blade 2n-1.

The expansion and contraction distances of the blades 21 and 2n of the expansion and contraction drive unit 6 are made to coincide with the depth of the groove 110 of the workpiece.

The first blade 21 and the last blade 2n of the blade assembly 2 are formed by a slope portion 25a perpendicular to the slope portion 25 coinciding with the end portion of the counter blade 1 and projecting in the opposite direction of the adjacent blade, And a guide hole 27 through which the guide rod 67 penetrates is formed.

The length of the entire blade assembly 2 can be adjusted by adding or removing blade pieces between the second blade 21 and the immediately preceding blade 2n-1.

The blades 21 and 2n constituting the expansion and contraction driving section 6 are guided by the guide rod 67 and the upper and lower fastening pieces of the blades 21 and 2n to extend and contract.

The blade assembly 2 is made up of a number of blade pieces and is conveniently divided into 21, 22, ..., 2n-1, 2n in sequence from the left to the right in the first and second directions.

The present invention as described above supplies a metal panel as a workpiece between the counter blade 1 and the blade assembly 2 and presses the metal panel against the blade assembly 2 in a normal operation, And bending operation is performed to bend the metal panel to be processed.

For example, a bending process based on the modified standard fire door of FIG. 2 will be described in detail.

A metal panel of a flat workpiece cut in the size of a fire door has a structure in which grooves 110 are provided on four sides, and a "C"

After the groove 110 is folded at one side, the panel is rotated by 180 占 and the opposite side is folded to bend the groove 110 on both sides.

Thereafter, the metal panel is rotated 90 ° to fix it between the blades so that the blade assembly 2 is lowered and the cylinder 61 of the elongating and shrinking drive part 6 is expanded so that the blades 21 and 2n are guided by the guide rod 67, And extends in the opposite direction (see FIG. 7).

The slope portion 25a enters into the groove 110 and is brought into close contact with the inner wall surface of the already bent groove 110 and bending is performed for one side as in the above-described manner.

After the bending, the blades 21 and 2n expanded in accordance with the contraction of the cylinder 61 are contracted in the direction of the adjacent blades 22 and 2n-1, As the plate 3 moves upward, the blade assembly 2 acts to prevent interference with the machined "? &Quot; groove, and pushes the slope 25a of the blades 21, 2n deep into the groove between the bends It is possible to reliably prevent deformation of the corresponding corner portion, thereby completing the bending.

After the three-sided machining is completed, the metal panel is rotated 180 degrees again to bend the four surfaces corresponding to the other surface. In the same manner as the third-surface bending process, the plate 3 and the blade assembly 2)> blade extension> bending> blade contraction> plate lift is performed in order and the bending is completed.

Therefore, it is useful for the bending operation of the fire door having the groove 110.

8, in the case of machining a metal panel having a narrow width (length) in consideration of the width and length of the workpiece, the blade 21, 22 (Length) of the intermediate blade is removed, it is possible to change it according to the width and length of the workpiece and to achieve 4-sided machining.

1: counter blade 2: blade assembly
3: plate 4: fastening piece
5: mold 6: stretching drive part
21, 22, 2n-1, 2n: blade 27: guide ball
61: cylinder 63, 65: bracket
67: guide rod 110: groove

Claims (6)

A counter blade (1) for supporting a metal panel as a workpiece from the bottom, and a blade (4) for supporting the metal panel on the upper side and being in close contact with the counter blade, And a metal mold (5) for applying a bending force to the metal panel to be machined between the counter blade (1) and the blade is coupled to the ram. In the panel bending device for a fire door,
The first blade 21 and the last blade 2n are horizontally orthogonal to the slope portion 25 coinciding with the end portion of the counter blade 1 and extend in the opposite direction of the adjacent blade And a guide hole 27 through which the guide rod 67 penetrates to constitute a blade assembly 2 so that the first blade 21 and the last blade 2n are provided so as to respectively expand and contract in opposite directions from the adjacent blades,
And a stretching and shrinking drive unit (6) for providing the expansion and contraction driving force is coupled to the blade (2n-1) immediately before the second blade (22) and the last blade (2n) Blade expansion and contraction drive. The method according to claim 1,
The expansion and contraction driving unit 6 is constructed by fixing brackets 63 and 65 to the first blade 21 and the second blade 22 respectively and fixing the cylinder 61 to the bracket 65 A guide rod 67 which is formed by coupling the cylinder rod to the bracket 63 and is fixed to the second blade 22 and penetrates through the first blade 21 opposed to the second blade 22,
The brackets 63 and 65 are fixed to the last blade 2n and the blade 2n-1 immediately before. The cylinder 61 is coupled to the bracket 65 to couple the cylinder rod to the bracket 63 And is configured so as to guide the expansion and contraction by a guide rod (67) passing through the last blade (2n) fixed to the immediately preceding blade (2n-1) and opposed to the last blade (2n) . The method according to claim 1,
Wherein the expansion and contraction distances of the blades (21, 2n) of the elongating and contracting drive section (6) coincide with the depth of the groove (110) of the workpiece. delete The method according to claim 1,
Characterized in that the length of the entire blade assembly (2) is adjusted by adding or removing blade pieces between the second blade (21) and the immediately preceding blade (2n-1) of the last blade Of the blade. The method according to claim 1,
The blades 21 and 2n constituting the expansion and contraction driving section 6 are fixed to the blade 2n-1 side of the second blade 22 and the last blade 2n and are fixed to the opposed first blade 21 and the last blade 2n- Is configured to guide the expansion and contraction of the blade by a guide rod (67) formed through the blade (2n) and the upper fastening piece (4) of the blades (21, 2n) .

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