KR20080067872A - Bending device for metal plate - Google Patents

Abstract

A bending device for a metal plate is provided to simplify a work process and to increase productivity by withdrawing a part of a jig on the diagonal and preventing the part from being caught in a neighboring curved surface. A bending device for a metal plate comprises a vertical moving member(30), and a rotary member. The vertical moving member is vertically moved on a bed(21) of a table(20). The rotary member is rotated by a rotary unit(50). The vertical moving member is vertically slid on supporters(221) fixed at two side plates(22) of the table and vertically moved by hydraulic cylinders(23). A plurality of jigs(70) are mounted to support a metal plate. A part of the jig is withdrawn after bending the metal plates by jig moving units. When the vertical moving members are moved upward, the members are not caught in the curved surfaces. The rotary units are vertically moved by hydraulic pressure by combining chains(53) with ends of a rod(52) withdrawn from a rotary hydraulic cylinder(51). The chains are combined with a sprocket(55) mounted at an outer end of a rotary shaft(54).

Description

Bending Device for Metal Plate

1 is a front view of a bending device for a metal plate according to an embodiment of the present invention.

Figure 2 is a side view of the bending device for a metal plate according to an embodiment of the present invention.

Figure 3 is a schematic diagram showing a rotating means of the bending device according to the present invention.

Figure 4a, 4b, 4c, 4d is a schematic diagram showing the bending process of the bending device for a metal plate according to the present invention.

Figure 5a is a plan view showing a jig movement means of the bending device according to the present invention.

Figure 5b is a side view showing the jig movement means of the bending device according to the present invention.

Figure 5c is a perspective view of a jig having a slide member according to the present invention.

Figure 6 is a schematic diagram showing a metal plate bent in the bending apparatus for a metal plate according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: bending device 20: table

21: Bad 22: Side plate

23: hydraulic cylinder 30: vertical moving member

40: rotation member 50: rotation means

51: rotating hydraulic cylinder 52: rod

53: chain 54: axis of rotation

55 sprocket 60 metal plate

70: jig 71: main body

72: slide member 80: jig moving means

81: jig rod 82: jig hydraulic cylinder

83: holder 221: support

The present invention relates to a bending device for a metal plate, and more specifically, the side of the metal plate used in the manufacture of fire hydrants and electrical boxes, such as multi-stage bending, but the jig supporting the metal plate when bending is caught in the intersection with other multi-stage bending surface. The present invention relates to a bending device for a metal plate, so that multi-step bending can be performed one side at a time.

In general, the fire hydrant and the electric box are provided with a structure for reinforcing the strength of the side by multi-folding the two sides of the metal plate 1 in the form of "c" as shown in Figure 7, the other metal plate inside.

When the structure is manufactured, a bending process of bending a multi-stage is performed using a bending device. In the bending process, one side of the metal plate supplied by the rotation of the rotating member is bent, and in the case of the multi-stage, the bent metal plate is further added. Withdrawal is to be further bent by the rotating member.

In the above process, by bending the jig in the metal plate of the opposite portion of the rotating member so as to support the line to be bent, the bending is performed at the correct position. Here, the jig has a support piece 4 extending in planar view on the lower part of the body 3 as shown in FIGS. To support the bending line, the protruding portion of the support piece 4 is to prevent the bending surface that is preceded and bent in the jig when multi-stage bending. That is, the bending device 5 using the conventional jig as described above is to bend one side of the metal plate as shown in Figure 9a and to advance the bent metal plate so that the jig 2 is separated from the bending surface, the jig again It is moved to the top to remove the metal plate from the bending device. In this case, as shown in FIG. 9B, since a part of the jig 2 deviated from the previously bent surface overlaps the corner portion where the bent portion overlaps, the jig is caught by the bent surface when the jig is moved upward. Therefore, there is a disadvantage in that the work process is lengthened and the apparatus becomes complicated such that the jig supporting the metal plate is divided into equal parts to sequentially prevent the jam, and thus the upper surface can be moved without the jam by sequentially removing from the bent surface 8.

The present invention has been made to solve the above problems,

Some of the jigs installed on both sides of the jig mounted at the bottom of the vertical moving member can be reversed diagonally so that the work can be shortened by moving upwards without being caught by adjacent bending surfaces when moving upward. An object of the present invention is to provide an apparatus that can be improved.

Metal sheet bending apparatus of the present invention for achieving the above object,

A metal plate bending device for bending a side of a metal plate in multiple stages, comprising: a vertical moving member vertically moved up and down on a bed of a table, and a rotating member bending a metal plate introduced by being rotated by a rotating means in contact with one end of the bad bed; Composed by; The vertical movable member is mounted on the side of the table fixed to the support plate fixed to the upper and lower slidable to be moved up and down by the hydraulic cylinder of the lower lower, and a plurality of jig is mounted at the bottom to support the introduced metal plate The jig on both sides of the jig is partially retracted after bending of the metal plate by the jig moving means so that the vertical moving member is not caught on the bent surface when the vertical moving member moves upward.

The jig moving means comprises a jig rod coupled to the jig rear surfaces of both sides, a jig hydraulic cylinder for releasably receiving the jig rod, and a fixture for fixing the jig hydraulic cylinder to the rear surface of the vertical moving member.

In addition, the jig moved by the jig movement means is composed of a main body coupled and fixed to the lower end of the vertical movement member, and a slide member mounted to be slidably mounted diagonally to the main body and the metal plate by the width of the sliding member sliding; Extend the support line of the contacting jig.

The rotating means is integrally coupled to the end of the rod drawn out from the hydraulic cylinder of the hydraulic device to move up and down by hydraulic pressure, the chain is coupled to the sprocket mounted on the outer end of the rotating shaft bearing coupled to the table side plate The rotating shaft is rotated, and the rotating shaft is coupled to a rotating member at an inner end thereof so that the metal plate is bent by the rotating member.

Hereinafter, the bending device for a metal plate of the present invention as described above will be described in detail with reference to the accompanying drawings.

1 is a front view of a bending device for a metal plate according to an embodiment of the present invention, Figure 2 is a side view of a bending device for a metal plate according to an embodiment of the present invention, Figure 3 shows a rotation means of the bending device according to the invention 4A, 4B, 4C, and 4D are schematic views showing a bending process of the bending device for a metal plate according to the present invention, and FIG. 5A is a plan view showing a jig moving means of the bending device according to the present invention. 5b is a side view showing a jig moving means of the bending device according to the invention, Figure 5c is a perspective view showing a jig having a slide member according to the invention, Figure 6 is bent by a bending device for a metal plate according to the invention It is a schematic diagram which shows a metal plate.

As shown, the bending apparatus 10 for a metal plate of the present invention includes a table 20 having a bed 21 to which the metal plate 60 is moved, a vertical movable member 30 for pressing the metal plate, and The rotating member 40 is rotated by the rotating means 50 in contact with one end.

The table 20 is composed of a bed 21 on which the metal plate 60 is placed and side plates 22 on both sides, and a support 221 is formed at one side of the side plate, and a vertical movement described later in a groove between the supports. The member 30 is coupled to be movable up and down. In addition, the vertical movement member 30 is a plate that is moved in the vertical direction, a plurality of jig 70 is mounted on the lower end, both sides are to be moved up and down by the hydraulic pressure of the hydraulic cylinder 23 fixed to the table.

In addition, the rotating member 40 coupled to one end of the bad 21 is rotated around a part in contact with the bad to bend the metal plate 60 protruding from the end of the bad. In addition, the rotation means 50 for transmitting the rotational force to the rotation member 40 is a rotation hydraulic cylinder 51, a rod 52 drawn out from the rotation hydraulic cylinder, and the rod of It consists of a chain 53 which is integrally coupled to the end. Therefore, the chain is coupled to the rotary shaft 54 bearing-coupled to the side plate 22 of the table to rotate the rotary shaft 54 as the rod is pulled up and down. Here, the sprocket 55 is mounted on the rotating shaft to be externally coupled to the chain 53, and the inner end of the rotating shaft is coupled to the rotating member 40 to receive hydraulic pressure from the rotating hydraulic cylinder. . At this time, the rotating member is kept horizontal when the hydraulic pressure is removed and the rotating hydraulic cylinder 51 draws the rod 52 and pulls the chain 53, and the rotating shaft 54 is rotated by the pulling of the chain to rotate the rotating member. 40 is rotated.

In the bending device 10 having the above structure, the metal plate 60 is placed on the upper surface of the bed 21, and the vertical movement member 30 is lowered so that the jig 70 presses the metal plate, but the metal plate is a jig ( 70) and a predetermined length is drawn out from the end of the bed 21 (FIG. 4A).

Next, the rotating member 40 is rotated about the part in contact with the bed 21 to bend the metal plate 60 drawn out a predetermined length. (FIG. 4B) Here, the rotation of the rotating member 40 is applied to the rotating means. The rotating means is a chain pulled by the hydraulic device as described above to rotate the rotating shaft to impart rotational force to the rotating member. In addition, after the bending is made, the metal plate 60 is further extended by a predetermined length (FIG. 4C), and the rotating member 40 is rotated so that two-stage bending is performed to form the side surface of the metal plate 60 as "c". (FIG. 4D)

In this case, the vertical movement member 30 is fitted with a jig 70 at a lower end thereof to press the metal plate 60 so that bending is performed at a proper position. The jig 70 is pressed to support the metal plate 60, the metal plate bending of the rotating member 40 is made to retreat and then moved to the upper side to allow the metal plate to move forward or backward. In this process, the process is sequentially performed in a state where only one surface of the metal plate 60 is bent, but in a state where bending is formed on both sides of the metal plate, it is difficult for the jig to retreat and move upward. That is, since the jig is caught on the bent portions on both sides of the metal plate when the jig moves upward, the direct jig cannot be moved.

Therefore, the jig movement means 80 of the present invention is to retreat two jigs 70 located on both sides of the plurality of jigs installed on the lower end of the vertical movement member 30 to the rear of the diagonal to move the metal plate during the vertical movement of the vertical movement means It does not get caught in the bent part of both sides.

5A, 5B, and 5C, the jig moving means 80 includes a main body 71 in which the jig 70 installed on both sides of the vertical moving member 30 is fixed to the vertical moving member and the diagonal direction in the main body. It consists of a slide member 72 which is slid and moved, and is mounted on the rear surface of the slide member jig rod 81 and the jig hydraulic cylinder 82 for drawing out the jig rod, the jig hydraulic cylinder is a fixed table (83) By using fixed to the vertical movable member (30).

Therefore, after the bending is performed in the above process, the vertical movable member 30 is retracted to the rear and at the same time, the slide members 72 of both side jigs are moved diagonally by the jig hydraulic cylinder 82 to be coupled to the vertical movable member. By shortening the jig length, the jig coupled to the vertically movable member can be moved upwards without being caught by the bent portion formed on both sides of the metal plate, and as shown in FIG. You can do it.

The jig 70 having the slide member 72 forms a plurality of protrusions or grooves in the sliding direction to secure the coupling between the slide member 72 and the main body 71 and to prevent spaced apart from the sliding direction. Corresponding grooves and protrusions may be formed in the main body so that the two members can be firmly coupled. Further, in addition to the illustrated form of having a slide member in one jig, the length of the bent surface formed by the plurality of jigs may be shortened by sliding the jig itself on both sides to the rear.

As described in detail above, the bending device for a metal plate of the present invention,

Some of the jigs installed at the bottom of the vertical moving member can be reversed diagonally so that they can be moved to the upper part immediately without bending to the adjacent bending surface when moving upward. It is possible to provide a useful device that can be.

In addition, the above-mentioned example is only an example to demonstrate this invention. Therefore, it is obvious that the ordinary skilled in the art to which the present invention pertains uses the partial change with reference to the detailed description.

Claims (4)

In the metal plate bending apparatus for bending the side of the metal plate in multiple stages, Vertical moving member 30 vertically moved up and down on the bed 21 of the table 20, and the rotating member for bending the metal plate 60 is rotated by the rotating means 50 in contact with one end of the bed ( 40), including; The vertical movable member 30 is mounted on the support 221 fixed to the side plates 22 of the table so as to be slidable up and down so as to be vertically moved by the hydraulic cylinder 23 under the bad 21. A plurality of jig 70 is mounted at the bottom to support the introduced metal plate 60, and the jig on both sides of the jig may be partially retracted after bending of the metal plate by the jig moving means 80 to move vertically. The bending device for a metal plate, characterized in that not to be caught in the bending surface when moving upward. The method of claim 1, The jig movement means (80) is a jig rod (81) coupled to the rear surface of the jig (70) on both sides, a jig hydraulic cylinder (82) for retractably receiving the jig rod, and the jig hydraulic cylinder (vertical member) Bending apparatus for a metal plate, characterized in that consisting of a fixing bar (83) for fixing to the rear of the (30). The method of claim 2, The jig 70 moved by the jig moving means 80 includes a main body 71 fixedly coupled to a lower end of the vertical moving member 30 and a slide member 72 mounted to be slidable diagonally to the main body. The bending device for a metal plate, characterized in that to extend the support line of the jig in contact with the metal plate by the width of the sliding member (72) sliding. The method of claim 1, The rotating means 50 is a chain 53 is integrally coupled to the end of the rod 52 withdrawn from the rotating hydraulic cylinder 51 to move up and down by hydraulic pressure, the chain 53 is bearing on the table side plate It is coupled to the sprocket 55 mounted on the outer end of the combined rotary shaft 54 to rotate the rotary shaft 54, the rotary shaft 54 is coupled to the rotating member 40 to the inner end of the rotating member 40 Metal plate bending device, characterized in that the metal plate 60 is bent by the rotation of.

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