KR20020096271A - Bending method for Electromagnetics waves interception shield and its apparatus - Google Patents

Abstract

PURPOSE: A method and a device for complicatedly bending a plate sheet are provided to reduce the life cycle and to correspond to the multiple-model small-quantity production by only changing an upper and a lower dies in a short time. CONSTITUTION: An upper die has curved faces corresponding to the upper, side, rear, rear lower end, and front side portions of a plate sheet. The upper die is supported on a ram(10). The ram is driven by an upper frame(1) having a first cylinder(3). A lower die(40) has a first face corresponding to the upper curved face of the upper die. First side dies(60) installed at both sides of the lower die have second faces(61) corresponding to the side curved faces of the upper die. By the rotation of a drive cam, the first side dies are pressurized toward the side curved faces of the upper die. The drive cam is driven by a lower frame(2) having a second air cylinder(4).

Description

Bending method for Electromagnetics waves interception shield and its apparatus

The present invention relates to a flat sheet multiple curved composite bending method and a device thereof, and more specifically, the upper mold, the lower mold, and the side mold can be separated from the body of the bending machine, and various forms of sheet sheet bending are possible. The present invention relates to a flat sheet multiple curved composite bending method and apparatus having a simple bending process and a device made of a five-step bending process using the upper mold, the lower mold, and the side mold.

Shield for shielding electromagnetic waves of the monitor is installed to prevent the electromagnetic waves generated from the internal electronic components of the monitor to the outside is used in various shapes of the monitor.

Conventionally, in order to manufacture a monitor shield, a plurality of bending machines were installed to perform each bending process in turn. However, the installation of a plurality of bending machines as described above requires a manpower to operate each bending machine as well as the expensive equipment to increase the unit cost of the product, there is a problem that the productivity is also lowered.

In order to solve the above problems, the domestic application No. 10-1999-0014252 and the domestic application No. 20-1999-0029433 are the main fixed block 110, the first rising block 120, the first as shown in FIG. 2, the lower base 100 on which the rising block 130, the first moving block 140, and the second moving block 150 are installed, the main falling block 210, the first falling block 220, and the second falling block. The bending device is configured by the upper base 200 provided with the 230 and the third falling block 240 and a plurality of hydraulic cylinders for driving the aforementioned various blocks, and the bending device is used, and the main fixing block 110 is used. ) To seat the plate-shaped sheet, the first rising block 120 is raised to support the rear portion (C) of the plate-shaped sheet, the second rising block 130 is raised to raise the lower rear portion (D) of the plate-shaped sheet The main lowering block 210 and the third lowering block 240 are lowered to support the side portion B of the plate-shaped sheet. (A) is bent, the first falling block 220 is lowered to press the close-up portion (C) of the plate-like sheet to the first rising block, and the second falling block 230 is lowered to the plate-shaped sheet The lower rear end portion D is pressed against the second rising block 130, the second rising block 130 descends to an initial position, and the second falling block 230 descends a predetermined interval further, the rear portion C Bend the lower rear end portion (D), the first rising block 120 is lowered to the initial position and the second lowering block 230 is further lowered by a predetermined interval to the rear portion at the upper surface (A) of the plate-like sheet (C) is bent, the first movable block 140 is moved to press and close the front side portion (E) of the plate-shaped sheet to the main fixed block 110, the front side portion (E) is bent from the side portion (B) To complete the process.

However, the bending device as described above has a problem in that it is not compatible with other models due to its complicated structure for a specific model, and there is no correspondence when changing or discontinuing a specific model, and the productivity of each product is reduced.

The present invention has been made in consideration of the above problems, and the object thereof is that it can be manufactured at low cost, and it is possible to produce various models by replacing only the upper and lower molds for internal bending in a single device in a short time, thereby shortening the life cycle. To provide a bending method and apparatus that is suitable for multi-model small quantity production.

The present invention for achieving the above object constitutes a bending device in the upper mold, lower mold, the first and second side mold, the upper mold presses the lower mold and plate sheet by the shandong of the ram installed on the upper frame The upper and rear side parts of the sheet-like sheet are bent, and the lower molds and the first and second side molds are installed in the lower frame, and the first and second side molds are rotated by 90 degrees by a drive cam to rotate the side portions of the plate sheet. By bending and installing the up cam on the upper mold to bend the rear lower surface of the sheet sheet, the bending process of the sheet sheet is carried out by seating of the sheet sheet → lowering of the upper mold → rotation of the up cam → rotation of the first and second side molds. → It consists of the composite curved bending method of the sheet-like sheet and its device that can be completed in five stages of advancement of the second side mold.

1 is a perspective view showing the configuration of a bending device according to the present invention

Figure 2 is a perspective view showing the installation of each mold in the bending apparatus according to the present invention

3 is an exploded view of a plate-like sheet processed by the bending device according to the present invention;

4 is an exemplary view showing a pressing process of the lower mold and the upper mold

5 is an exemplary view showing the structure of an upcam;

6 is an exemplary view showing the operation of the second air cylinder and the rotation of the side mold accordingly;

7 is an exemplary view showing a structure of an upper mold

8 is an exemplary view showing the structure of a positioning stopper;

9 to 13 are perspective views showing the bending process of the plate-shaped sheet according to the present invention

14 is a perspective view showing a conventional bending device configuration

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

(A) Top part (B) Side part

(C) Rear part (D) Lower rear part

(E) Front side (X) Plate type

(1) upper frame (2) lower frame

(3) 1st air cylinder (4) 2nd air cylinder

(5) Third Air Cylinder (6) Fourth Air Cylinder

(7) Guide Shaft (8) Fixture

(9) Fastening bolt (10) Ram

(11) Positioning pinhole (12) Bolt fastener

(20) Upper die (21) Upper surface bending surface

(22) Side Bending Surface (23) Rear Side Bending Surface

(24) Front side bent surface (25) Positioning pin

26 Guide (30) Upcam

(31) Bending Punch (32) Pressing Plate

(33) Spring (40) Lower die

(41) Press block (42) Body

(43) spring (44) pin gauge

(45) Guide Gauge (46) First Side

(50) Drive Cam (51) First Guide

(52) Second Guide (53) Side Molding Plate

(54) Rotary shaft (55) Cylinder support bracket

(60) first side mold (61) second corresponding surface

(62) Second Side Mold (63) Third Side

(70) Slide plate (71) Guide groove

(80) lower die fixing plate (81) guide post

(90) Side mold positioning plate (91) Positioning stopper

(92) Bolts (93) Radial Safety Devices

(100) Lower Base (110) Main Block

(120) first rising block (130) second rising block

140, the first moving block 150, the second moving block

(200) Upper base (210) Main descent block

(220) first falling block (230) second falling block

(240) 3rd falling block

1 is a perspective view showing the configuration of the bending device according to the invention, Figure 2 is a perspective view showing that each mold is installed in the bending device according to the invention, Figure 3 is processed by the bending device according to the invention Figure 4 is an exploded view of the sheet-like sheet, Figure 4 is an exemplary view showing the pressing process of the lower mold and the upper mold, Figure 5 is an exemplary view showing the structure of the upcam, Figure 6 is the operation of the second air cylinder and accordingly Exemplary view showing the rotation, Figure 7 is an illustration showing the structure of the upper mold, Figure 8 is an illustration showing the structure of the positioning stopper, Figures 9 to 13 is a bending process of the plate-shaped sheet according to the present invention As shown in the perspective view, the present invention provides a plate-shaped sheet formed to have a shape corresponding to the upper surface portion (A), side portion (B), rear portion (C), lower rear portion (D), front side portion (D) of the monitor Corresponding to each machining surface (A, B, C, D, E) for bending In the bending device consisting of a plurality of molds and a plurality of cylinders for driving the bent surface is formed, the upper surface portion (A), the side portion (B), the rear portion (C), the lower rear portion (D), the front side portion (E) ), The upper mold 20 formed integrally with the bent surfaces 21, 22, 23, and 24, the ram 10 for supporting the upper mold 20, and the first air cylinder for driving the upper mold 20 An upper frame 1 composed of (3), a lower die 40 having a first mating surface 46 corresponding to the upper surface bending surface 21 of the upper die 20, and the lower die 40 The second corresponding surface 61 is installed on both sides of the upper mold 20 and corresponds to the side curved surface 22 of the upper mold 20, and the side curved surface of the upper mold 20 is rotated by the rotation of the driving cam 50. 22) and a lower frame (2) composed of a first side mold (60) configured to be pressed in close contact with the second and a second air cylinder (4) for driving the drive cam (50).

The first air cylinder 3 is installed on the upper end of the upper frame 1, the ram 10 is formed with a plurality of positioning pin holes 11 and bolt fastening holes 12, the first air cylinder (3) It is configured to move up and down along a plurality of guide shafts (7) connecting the upper frame (1) and the lower frame (2), the positioning pinhole (11) is the upper mold (20) ram (10) When installed in the) is preferably formed of two or more to be the reference of the position where the upper mold 20 is to be installed.

The lower frame 2 has a slide plate 70 having a “T” shaped guide groove 71, a lower die fixing plate 80 installed at an upper end thereof, and side molds at both sides of the lower die fixing plate 80. Positioning plate 90 is installed, the drive cam 50 is installed on the side mold positioning plate 90, one side is connected to the drive cam 50, the other side is installed in the lower frame (2) It is composed of a cylinder (4) is configured to rotate the drive cam 50 by the operation of the second air cylinder (4).

The driving cam 50 is connected to the first guide 51 installed on the side mold positioning plate 90 and the second guide 52 provided with the side mold fixing plate 53 by a rotating shaft 54 to form a second air cylinder. It is configured to rotate 90 degrees about the rotating shaft 54 by the operation of (4), the second air cylinder 4 is installed to be rotatable by the cylinder support bracket 55 as shown in Figure 6 and the second guide It was configured to move in conjunction with the rotation of the 52.

In addition, by forming a circular guide post 81 on the upper end of the lower die fixing plate 80 to be coupled to the guide 26 formed in the upper die 20, the relative between the upper die 20 and the lower die 40 It is configured to facilitate positioning.

The upper mold 20 is installed by the fastener 8 and the fastening bolt 9 to the ram 10, the upper surface portion (A), side portion (B), rear portion (C), rear lower portion ( D), the bent surfaces 21, 22, 23, 24 corresponding to the front side surface portion E are formed integrally, and the positioning pin 25 corresponding to the positioning pinhole 11 is formed at the upper end and the guide at the lower end. (26) was formed.

In addition, the up cam 30 is hinged to the upper front surface of the upper mold 20 and connected to the third air cylinder 5 installed inside the upper mold 20 to operate the up cam (5) by the operation of the third air cylinder 5. 30) was rotated to bend the lower rear portion (D).

The upcam 30 is a bending punch 31 and the pressing plate 32 is installed as shown in Figure 5, the bending punch 31 and the pressing plate 32 is fixed elastically by a spring 33, the bending punch A round was formed at one corner of (31) to bend smoothly even when there were mold assembly and processing errors.

The guide 26 is to be the position reference of the lower mold 40 when the lower mold 40 is installed, coupled with the guide post 81 formed on the lower mold fixing plate 80 to determine the position of the lower mold 40. do.

The lower die 40 is installed on the lower die fixed plate 80, the pressure block 41 is formed with a pin gauge 44, the pressure block 41 is inserted and the guide gauge 45 is formed It is composed of a body 42 formed with a first corresponding surface 46 corresponding to the upper surface bending surface 21 of the upper die 20, the spring 43 between the pressing block 41 and the body 42 When the upper mold 20 is lowered by installing the bending operation to perform, the pressure block 41 is also lowered in accordance with the lowering of the upper mold 20 was configured to apply pressure to the sheet-like sheet (X).

The first and second side molds 60 and 62 are installed at the side mold fixing plate 53 of the driving cam 50, and the first side mold 60 is the side surface bending surface 22 of the upper mold 20. A second mating surface 61 corresponding to the second side mold 62 is formed, and a third mating surface 63 corresponding to the front side bent surface 24 of the upper mold 20 is formed. The first side mold 60 is driven by a second air cylinder 4 installed in the lower frame 2, and the second side mold 62 is a fourth air cylinder 6 installed in the side mold fixing plate 53. It is configured to be driven by.

A positioning stopper 91 is installed between the lower mold fixing plate 80 and the side mold positioning plate 90 so that the side mold positioning plate 90 can be positioned at a position suitable for each model. 91 is configured to be able to fasten the bolt 92 on both sides by the bolt 92 is configured to adjust the distance between the lower mold fixing plate 80 and the side mold positioning plate 90.

In addition, by installing a light safety device 93 on both sides of the front portion of the main body for the safety of the operator was configured to completely exclude the risk of safety accidents.

Hereinafter, each mold is installed in the bending apparatus as described above, and the bending method of the plate-shaped sheet will be described below.

Align the positioning pin 25 of the upper mold 20 with the positioning pin hole 11 of the ram 10 and then use the fastener 8 and the fastening bolt 9 to attach the upper mold 20 to the ram 10. The lower die 40 to the lower die fixing plate 80 and the ram 10 lowers little by little while the guide 26 of the upper die 20 and the guide post 81 of the lower die fixing plate 80. The lower mold fixing plate 80 is fixed to the slide plate 70 so that the two molds are coupled to each other, and the distance between the lower mold 80 and the side mold position adjusting plate 90 is adjusted by using the positioning stopper 91 and the slide plate. Secure to 70.

In addition, the first and second side molds 60 and 62 are installed on the side mold fixing plate 53 of the drive cam 50 installed on the side mold positioning plate 90.

When the installation work of each mold 20, 40, 60, 62 is completed as described above,

As shown in FIG. 9, the plate-shaped sheet X is seated on the upper end of the pressing block 41 of the lower die 40, and the heat dissipation hole formed in the plate-shaped sheet X is inserted into the pin gauge 44 of the pressing block 41. Using the guide gauge 45 to determine the position of the plate-like sheet (X) to be seated.

As shown in FIG. 10, when the ram 10 and the upper die 20 are lowered along the guide shaft 7 to apply pressure to the plate-shaped sheet X and the pressure block 41, the pressure block 41 descends and the body 42. The top surface portion (A) and the rear surface portion (C) of the plate-like sheet (X) is bent.

As shown in FIGS. 5 and 11, the upcam 30 is rotated by the third air cylinder 5 so that the pressing plate 32 fixes the rear portion C of the plate sheet X and the plate sheet by the bending punch 31. Lower rear portion D of (X) is bent.

As shown in FIG. 12, the driving cam 50 and the first and second side molds 60 and 62 rotate by the second air cylinder 4 and the side parts of the plate sheet X by the first side mold 60. B) is bent.

As shown in FIG. 13, the second side mold 62 is advanced by the fourth air cylinder 6 to bend the front side portion E of the plate sheet X to complete the bending of the plate sheet.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

The present invention as described above can be used to replace only each mold on the basis of the bending device can be used to produce a monitor shield of various shapes, bending molding can be bent at the same time three-dimensional shape to improve the productivity of the product In addition, the reliability of the quality can be improved by simplifying the process.

Claims (8)

Each processing surface for bending the plate-like sheet X formed to have a shape corresponding to the upper surface portion (A), the side portion (B), the rear portion (C), the lower rear portion (D), and the front side portion (D) of the monitor. In the bending device composed of a plurality of molds and a plurality of cylinders for driving the same, the bending surface is formed corresponding to (A, B, C, D, E), The upper die (20), the upper surface portion (A), the side portion (B), the rear portion (C), the lower rear portion (D), the front surface portion (E), the upper surface die (20) formed integrally with the bent surface (21, 22, 23, 24) ), A ram 10 for supporting the upper mold 20, an upper frame 1 composed of a first air cylinder 3 for driving the same, The lower mold 40 having the first corresponding surface 46 corresponding to the upper surface bending surface 21 of the upper mold 20 and the lower mold 40 is installed on both sides of the upper mold 20 A second side surface 61 corresponding to the side surface bending surface 22 is formed and is configured to be in close contact with the side surface bending surface 22 of the upper mold 20 by the rotation of the driving cam 50 ( 60), and a lower plate (2) consisting of a second air cylinder (4) for driving the drive cam 50, the plate-shaped sheet curved composite bending device. The method of claim 1, The ram 10 has a plurality of positioning pin holes 11 and bolt fastening holes 12 are formed, the positioning pin 25 is scheduled to be coupled to the positioning pin holes 11 is formed on the upper mold A plate-shaped sheet curved composite bending device, characterized in that configured to be installed and fixed to the ram (10) by the fastener (8) and the fastening bolt (9). The method of claim 1, The lower frame 2 is a pair of slide plate 70 formed with a "T" shaped guide groove 71, and a lower die fixing plate 80 provided on the slide plate 70 and formed with a guide post 81. And a side mold positioning plate 90 installed at both sides of the lower die fixing plate 80, a drive cam 50 installed at the side mold positioning plate 90, and a second connected to the drive cam 50. Consisting of an air cylinder (4), The sheet-shaped sheet curved composite bending device, characterized in that configured to fix the lower mold 40 to the lower mold fixing plate 80, and to fix the side mold to the drive cam (50). The method of claim 1, The third corresponding surface 63 is installed on the driving cam 50 and corresponds to the front side bending surface 24 of the upper mold 20, and the fourth air cylinder 6 installed on the driving cam 50 is formed. The plate-shaped sheet multiple curved composite bending device, characterized in that it comprises a second side mold (62) configured to be in close contact with the front side portion bending surface (24) of the upper mold (20) by the operation. The method according to claim 1 or 2, A round punch is formed on one side corner 31 and the pressing plate 32 for fixing the plate-shaped sheet is installed, characterized in that it comprises an up-cam hinge hinged to the upper surface of the upper mold 20 Plate-shaped multi-faceted composite bending device. The method according to any one of claims 1 to 3, The drive cam 50 is connected to the first guide 51 installed on the side mold positioning plate 90, the first guide 51 and the rotating shaft 54, the second side fixing plate 53 is installed It is composed of a guide 52, the second air cylinder (4) is installed so that one side is connected to the side mold fixing plate 53 and the other side is fixed by the cylinder support bracket 55 of the lower frame (2) Plate-shaped sheet curved composite bending device characterized in that the configuration. The method of claim 3, wherein It is installed between the lower mold fixing plate 80 and the side mold positioning plate 90, the bolts are fastened to both sides so as to space the gap between the lower mold fixing plate 80 and the side mold positioning plate 90 according to the fastening of the bolts. A plate-shaped sheet multi-faceted composite bending apparatus characterized by including a positioning stopper (91) to be adjustable. In the bending method of the plate-like sheet (X) formed to have the machining surface (A, B, C, D, E) of the shape corresponding to the upper, side, rear, bottom, front and rear portions of the monitor, The plate sheet (X) is seated on the upper side of the pressure block (41) of the lower die (40), the heat radiation hole formed in the plate sheet (X) is inserted into the pin gauge 44 of the pressure block 41 and guide gauge (45) And determining the position of the plate-like sheet (X) by using the seat; The ram 10 and the upper die 20 are lowered along the guide shaft 7 to apply pressure to the plate-shaped sheet X and the pressure block 41 so that the pressure block 41 is lowered and inserted into the body 42. Bending the upper surface portion (A) and the rear surface portion (C) of the sheet-shaped sheet (X), The upcam 30 is rotated by the third air cylinder 5 so that the pressing plate 32 fixes the rear portion C of the plate sheet X and the rear lower end portion of the plate sheet X by the bending punch 31. Bending D), The drive cam 50 and the first and second side molds 60 and 62 rotate by the operation of the second air cylinder 4 and the side portions B of the plate sheet X by the first side mold 60. Bending the The second side mold 62 is advanced by the fourth air cylinder (6) to bend the front side portion (E) of the sheet-like sheet (X) consisting of a sheet-like sheet composite curved bending method.