KR101649609B1 - Folding machine of metallic strip - Google Patents

Abstract

 The present invention provides a metal strip bending apparatus (10) capable of quickly bending a curved portion.

The metal strip bending apparatus 10 of the present invention rotates the upper rotating body 420 and the lower rotating body 430 counterclockwise to bend the metal strip in the clockwise direction, The hole 420b and the bending arm passage hole 430b of the lower rotating body 430 are moved out of the metal strip and the cylinder 613 is driven to move the bending arm 615 to the bending arm hole (420b) of the upper rotating body (430). When the upper rotating body 420 and the lower rotating body 430 are rotated in the clockwise direction, they pass through the bending arm passing holes 430b of the lower rotating body 430 and are passed through the bending arm passing holes 420b The bending arm 615 first bends the front side of the metal strip while pushing the side surface of the metal strip between the guide rods 513 and 515 in the clockwise direction.

The rotation of the upper rotating body 420 and the lower rotating body 430 is stopped while the front side of the metal strip is first bent and the metal strip is pushed from the rear side of the strip guide portion 331 toward the front side of the nozzle guide 310 The metal strip exiting from the outlet 310b of the nozzle guide 310 contacts the side surface of the bending arm 615 with the guide rod 513 as a bending axis, Bend.

Description

[0001] Folding machine of metallic strip [0002]

The present invention relates to a metal strip bending apparatus for forming an outer surface of a channel letter. More particularly, to a metal strip bending apparatus for bending a metal strip to form the shape of an outer surface of a channel letter for a signboard.

Most channel letters consist of straight lines and curved lines, forming letters and figures. Therefore, in order to form the channel letter, it is essential to bend the metal strip according to the shape of the letter or figure.

Bending devices capable of mechanically bending such metal strips are disclosed in U.S. Patent Nos. 5,881,591 and 7,441,434. These bending devices are treated as a set of short straight lines whose directions of extension are different from each other, so that the metal strips can be pushed out to a certain length, then bent at a predetermined angle by pushing the metal strips on the side of the stripped metal strips, And the bending operation is repeated by pushing the metal strip at a predetermined angle from the side of the removed metal strip to produce a curved portion of the channel letter.

The metal strip bending apparatus of U.S. Patent No. 5,881,591 is provided with a rotating body at the top and bottom of the outlet of the clamp for the metal strip to push out the metal strip at a certain angle from the side, Is positioned on the opposite side of the metal strip to be bent and the upper and lower rotors are rotated to form the curved portion of the channel letter.

However, in the device of U.S. Patent No. 5,881,591, the upper and lower rotors are stopped, the metal strip is allowed to come out of the clamp to a certain length, and the upper and lower rotors are rotated at a certain angle, The upper and lower rotors are stopped, the metal strip is retracted to a predetermined length, and the upper and lower rotors are rotated at a predetermined angle to repeat the process of bending the metal strip from the side by bending the metal strip , There is a disadvantage that it takes a long time to make a curved portion when the length of the curved portion is long in the channel letter. That is, in the device of U.S. Patent No. 5,881,591, when the metal strip is bent to push out the metal strip from the side by causing the metal strip to come out of the clamp at a certain angle and rotating the upper and lower rotors at a certain angle, The bending time is long because the process of rotating the upper and lower rotors at a certain angle is repeated several times while allowing the metal strip to come out of the clamp with a certain length.

It is an object of the present invention to provide a metal strip bending apparatus capable of bending a curved portion.

Another object of the present invention is to provide a metal strip bending apparatus capable of bending a curved portion within a short time.

It is another object of the present invention to provide a metal strip bending apparatus capable of bending a curved portion within a short time without repeatedly driving the bending unit.

The above objects are accomplished by a metal strip guide unit having a passageway through which a metal strip passes in a longitudinal direction; A guide rod unit comprising a guide rod and guide rod guiding means for positioning the guide rod in front of the metal strip guide unit from which the metal strip exits; A bending arm drive unit including a bending arm and bending arm guide means for positioning the bending arm in front of the guide rod; A bending unit for rotating the bending arm in a plane to push the front side of the metal strip exiting the metal strip guide unit from the side to bend for the first time; A bending unit driving means for rotationally driving the bending unit; The metal strip is pushed in the longitudinal direction of the metal strip so as to come out of the metal strip guide unit so that the rear side of the metal strip which is bent first is contacted with the side surface of the bending arm located in front of the guide rod, The metal strip bending apparatus according to claim 1,

In the metal strip bending apparatus having such a configuration, the front side of the metal strip is first bent to determine the bending direction of the metal strip using the bending arm and the bending unit, and the metal strip is pushed longitudinally by the metal strip straight guide means Inside, the metal strip is bent second while contacting the side of the bending arm located in front of the guide rod.

In the above configuration, the guide rod guiding means includes a guide rod slider having two guide rods and a cylinder for driving the guide rod slider up and down. When the guide rod slider is lowered by the cylinder, the guide rod is lowered together. The ends of the two guide rods are vertically installed in the guide rod receiving grooves formed in the main plate, so that the metal strips are inserted between the guide rods and the guide rods .

The bending arm guiding means includes a cylinder for driving the bending arm up and down. When the cylinder pushes up the bending arm, the bending arm passes through the bending arm passing hole of the lower bending rotating body, And is inserted into the bending arm passage hole.

In the above configuration, the metal strip straight guide means may be the apparatus disclosed in U.S. Patent Nos. 5,881,591 and 7,441,434, and other devices capable of pushing the metal strip forward can be used.

The above objects are accomplished by a metal strip guide unit having a passageway through which a metal strip passes in a longitudinal direction; Wherein a bending arm hole is formed in the upper portion of the outlet of the metal strip guide unit with the metal strip guide unit interposed therebetween to allow and support the movement of the bending arm, And a bending arm which is rotatably installed at a lower portion of the outlet of the metal strip guide unit and which allows the bending arm to move and supports the bending arm, A bending unit including a lower bending rotating body having a through hole formed therein; And a guide rod guide unit configured to guide the end of the guide rod downward through the guide rod passage groove of the upper bending rotating body; A bending arm which passes through a bending arm passage hole of the lower bending rotating body and is received in a bending arm passing hole of the upper bending rotating body; and a bending arm which is attached to a lower portion of the lower bending rotating body, Passing through the bending arm passage hole of the bending rotating body and the guide rod receiving groove of the main plate formed between the upper bending rotating body and the lower bending rotating body and entering the bending arm passing hole of the upper bending rotating body A bending arm drive unit including bending arm guide means for guiding the bending arm to be supported; And a bending unit driving means for driving the bending unit.

In the above configuration, the guide rod guide means of the guide rod unit is driven in a state where the metal strip is out of the metal strip guide unit, so that the guide rod passes through the guide rod passage groove of the upper bending rotating body, The arm guiding means is driven to move the bending arm into the bending arm through hole of the lower bending rotating body of the lower bending rotating body and the bending arm through bore of the upper bending rotating body and then drive the bending unit driving means When the metal strip is first bent at a desired bending angle by the bending arm and then the metal strip is pushed while the bending unit driving means is stopped, the metal strip contacts the side surface of the bending arm about the guide rod, It will come out in the future.

In the above configuration, the guide rod guiding means includes a guide rod slider having two guide rods and a cylinder for driving the guide rod slider up and down. When the guide rod slider descends downward by the cylinder, the guide rod is also lowered together, and the respective ends of the two guide rods enter the guide rod receiving grooves formed in the main plate so as to be vertically installed to allow the metal strip to pass between the guide rods .

The bending arm guiding means includes a cylinder for driving the bending arm up and down. When the cylinder pushes up the bending arm, the bending arm passes through the bending arm passing hole of the lower bending rotating body, And is inserted into the bending arm passage hole.

The metal strip guide unit is composed of a nozzle guide and a metal strip guide unit positioned behind the nozzle guide. The metal strip is supplied from the rear of the metal strip guide to the front of the nozzle guide, The upper and lower support rings have the same central axis on both sides of the nozzle guide body portion formed with the guide exit portion therebetween. The upper support ring portion is provided with an upper bending rotation body, and the lower support ring portion is provided with a lower bending rotation body.

The bending unit driving means includes a motor, a driving shaft driven by the motor, and an upper driving gear and a lower driving gear having the same diameter fixed to the driving shaft. The upper driving gear of the bending unit includes an upper bending rotating body And the lower driving gear is gear-meshed with the lower bending rotating body provided on the lower supporting ring portion.

In the present invention, when the metal strip is firstly bent and the rotation of the upper and lower rotors is stopped, and the metal strip is pushed from the rear of the strip guide portion toward the front of the nozzle guide, the metal strip exiting the outlet portion of the nozzle guide The guide rod is bent at a desired angle while being in contact with the side surface of the bending arm while bending along the first bending direction.

According to the present invention, the metal strip is first bent in a desired direction by the operation process, and then the metal strip is bent while pushing the metal strip from the rear side of the metal strip guide to the front side of the nozzle guide, The bending of the curved portion of the curved portion can be performed in a short time.

BRIEF DESCRIPTION OF THE DRAWINGS Fig.

1 is a view showing an outer shape of a metal strip bending apparatus according to the present invention.

2 is an exploded perspective view of the metal strip bending apparatus.

FIG. 3 is a view showing a part of the metal strip bending apparatus cut out to show the inside of the apparatus.

Figure 4 is a side view of Figure 3;

Fig. 5 is a view for explaining the operation of the present invention, in which the guide rod slider and the bending arm are not driven. Fig.

6 is a view for explaining the operation of the present invention, in which the guide rod slider is driven and the bending arm is not driven.

FIG. 7 is a view for explaining the operation of the present invention, in which a guide rod slider and a bending arm are driven to bend a metal strip in a clockwise direction. FIG.

8 is a view for explaining the operation of the present invention, showing a state in which a metal strip is pushed clockwise in a state in which a guide rod slider and a bending arm are driven.

FIG. 9 is a view for explaining the operation of the present invention, in which a guide rod slider and a bending arm are driven to bend a metal strip in a counterclockwise direction.

10 is a view for explaining the operation of the present invention, showing a state in which the metal strip is pushed counterclockwise in a state in which the guide rod slider and the bending arm are driven.

Fig. 11 is a view for explaining the operation of the present invention, in which some of the components of Fig. 6 are viewed from above.

FIG. 12 is a view for explaining the operation of the present invention, in which some of the components of FIG. 7 are viewed from above.

13 is a view for explaining the operation of the present invention, in which some of the components in the state of FIG. 8 are viewed from above.

FIG. 14 is a view for explaining the operation of the present invention, in which some components of the state of FIG. 9 are viewed from above.

FIG. 15 is a view for explaining the operation of the present invention, in which some elements of the state of FIG. 10 are viewed from above.

1 to 4, a metal strip bending apparatus 10 according to the present invention includes a metal strip guide unit 300 to which a metal strip to be bent is supplied, a bending unit 400 to bend the metal strip, A bending unit driving unit 200 for driving the bending unit 400, a metal guide rod driving unit 500 for supporting the metal strip, and a bending arm driving unit 600.

Each of these units is mounted between a main plate 111 constituting a frame, an upper plate 113 positioned above the main plate 111 and a lower plate 115 positioned below the main plate 111. [

Each of the plates 111, 113, and 115 has grooves at portions necessary for mounting the respective components, and grooves are formed at necessary portions so as not to interfere with the operation of the components.

A bending arm passage groove 111a through which the bending arm 615 passes is formed in front of the main plate 111 and guide rod receiving grooves 111b and 111c are formed on the rear side thereof; Respectively. The arm passage groove 111a is formed in an arc shape so as not to interfere with the rotation of the bending arm 615 when the bending unit 300 rotates and the guide rod receiving grooves 111b and 111c are connected to the guide rods 513, 515 are inserted into the holes corresponding to the shapes of the ends of the guide rods 513, 515.

An arc-shaped groove 113a through which the bending arm 615 and the rod guides 513 and 515 pass is formed in front of the upper plate 113.

The bending unit drive unit 200 is located at an intermediate portion between the upper plate 113 and the lower plate 115. The bending unit drive unit includes a motor 210, a drive shaft 213 driven by the motor 210, and an upper drive gear 215 and a lower drive gear 217 having the same diameter fixed to the drive shaft 213 do. The motor 210 is mounted on the lower plate 115 and the drive shaft 213 passes through the bearing 233 fitted to the main plate 111 and through the bearing ring 231 fitted to the upper plate 113, As shown in Fig. A lower drive gear 217 is attached to the lower side of the upper drive gear 215 above the drive shaft 213. On the upper driving gear 215, a rotation angle indicating plate 235 is attached to allow the rotation angle detecting sensor to detect the rotation angle. And is covered with the upper drive gear cover 127 to protect the operator from the upper drive gear 215.

The metal strip guide unit 300 is located between the main plate 111 and the upper plate 113 located above the main plate 111. The metal strip guide unit 300 includes a nozzle guide 310 and a channel guide 331 connected to the rear of the nozzle guide 310.

The nozzle guide 310 has upper and lower support portions 310c and 310d provided in the form of a ring with a center axis at both ends of the nozzle guide body portion 310a formed with an outlet portion 310b through which the metal strip exits have.

The metal strip is supplied from the rear of the channel guide portion 331 by a metal strip feeding device not shown in the drawing and exits to the outlet portion 310b of the nozzle guide 310. [

The upper rotating body 420 constituting the bending unit 400 is disposed above the outlet 310b of the metal strip guide unit 300 and the lower rotating body 430 is disposed at the outlet of the metal strip guide unit 300. [ (310b). More specifically, the nozzle guide body portion 310a having the outlet portion 310b protruding from the metal strip is formed and the upper rotating body 420 is fitted to the upper support ring portion 310c together with the bearing 441, The entire body 430 is fitted to the lower supporting ring portion 310d together with the bearing 443 so as to be rotatable.

A protrusion 410a is formed downward at the center of the upper rotating body 420 so that the upper rotating body 420 is fitted into the upper supporting ring portion 310c and the lower rotating body 430 is fixed to the lower supporting ring portion 310d A protrusion 430a is formed at the center of the lower rotating body 430 so as to be fitted.

A bending arm hole 420b in which a bending arm 615 is inserted and supported is formed on the upper surface of the upper rotating body 420 and an arcuate groove And a bending arm passage hole 430b for supporting and supporting the bending arm 615 is formed on the upper surface of the lower rotating body 430. [

The upper rotating body 420 is gear-meshed with the upper driving gear 215 attached to the upper side of the driving shaft 213 of the motor 210. The lower rotating body 420 is coupled to the driving shaft 213 of the motor 210, And rotates as the motor rotates. The lower driving gear 217 rotates as the motor rotates.

However, the bending arm 615 supported through the upper and lower bending arm passage holes 420b and 430b rotates as the upper rotor 420 and the lower rotor 430 rotate, The guide rods 513 and 515 passing through the arcuate grooves 420c of the rotating body 420 do not rotate even though the upper rotating body 420 and the lower rotating body 430 rotate.

This is because the bending arm driving unit 600 including the bending arm 615 rotates together because it is attached to the lower rotating body 430 as described below but the guide rods 513 and 515, This is because the driving unit 500 is separated from the upper rotating body 420.

An upper bending rotatable cover 125 is positioned above the upper plate 113 and a metal strip guide rod driving unit 500 is disposed above the upper bending rotatable cover 125.

125b through which the rod guides 513 and 515 pass are formed in the upper bending rotatable cover 125. [

Below the lower plate 115, a metal strip bending arm driving unit 600 is attached.

Reference numeral 125 denotes an upper rotatable protective cover for enclosing the upper rotatable body 420, and numeral 127 denotes a lower rotatable protective cover for enclosing the lower rotatable body 430.

A guide rod unit 500 is installed above the upper rotatable cover 125 surrounding the upper rotatable body 420. The guide rod unit 500 is configured such that the guide rods 513 and 515 and the guide rods 513 and 515 are inserted into the arcuate groove 113a formed in front of the upper plate 113 and the arcuate shape of the upper rotator 420 And guided rod guiding means for guiding the guide rod into the guide rod receiving grooves 111b and 111c formed on the front side of the main plate 111 through the grooves 423 of the main plate 111. [

The guide rod guiding means can be a cylinder as shown in the drawing, or a linear motion mechanism for lowering the guide rods 513 and 513, for example, a rack, a pinion, a ball screw mechanism or the like And is not necessarily limited to a cylinder.

The guide rods 513 and 515 are attached to the guide rod slider 510. The guide rod slider 510 is mounted on the guide posts 525 vertically erected between the upper support member 521 and the lower support member 523 Is inserted. The guide rod slider 510 moves up and down along the guide post 525.

The guide rod slider 510 is attached to the sliding carriage 533 of the cylinder 530 constituting the guide rod guiding means and moves up and down along the guide post 525 in accordance with the operation of the cylinder 530. That is, when the sliding carriage 533 of the cylinder 530 goes down or rises, the guide rod slider 510 also goes down or goes up. When the guide rod slider 510 is lowered, the ends of the guide rods 513 and 515 attached to the guide rod slider 510 pass through the arcuate grooves 420c of the upper rotator 420, The ends of the guide rods 513 and 515 attached to the guide rod slider 510 are inserted into the guide rod receiving grooves 111b and 111c on the front side of the main plate 111 Out of the guide rod receiving grooves 111b and 111c on the front side of the upper rotating body 420 and the upper rotating body 420 through the arc-shaped grooves 420c of the upper rotating body 420. A cylinder supporting member 541 for supporting the cylinder 530 is vertically installed above the upper rotor cover 125 surrounding the upper rotating body 420. The lower portions 513a and 515a of the guide rods 513 and 515 can rotate independently about their respective axes to reduce friction with the escaping metal strip.

A bending arm unit 600 is attached to the lower rotating body 430 downward.

The bending arm unit 600 pushes up the bending arm 615 and the bending arm 615 and passes through the bending arm passing hole 430b of the lower rotating body 430 to be bent And the bending arm driving means for vertically standing on the front side of the guide rods (513, 515) sandwiched between the guide rods (420b). As the bending arm driving means, a cylinder can be used as shown in the drawing, and a linear motion mechanism for raising the bending arm, for example, a rack, a pinion, a ball screw mechanism, no.

The bending arm drive unit 600 includes a cylinder mounting plate 603, and a bending arm cylinder 613 is installed in the cylinder mounting plate 603. A bending arm 615 is connected to the upper side of the bending arm cylinder 613. When the bending arm cylinder 613 is driven to push the bending arm 615 upward, the bending arm 615 passes through the bending arm passing hole 430b of the lower rotating body 430, Passing through the through-hole 420b, vertically in front of the guide rods 513 and 515).

The upper portion 615a of the bending arm 615 is self-rotatable about its own axis to reduce friction with the escaping metal strip.

Although not shown in the figures, reference is made to the apparatus disclosed in U.S. Patent Nos. 5,881,591 and 7,441,434 for the metal strip straight guide means.

Next, a process of bending the metal strip using the bending arm 615 and the guide rods 513 and 515 will be described.

As shown in FIG. 5, the metal strip to be bent is pushed to the rear of the strip guide portion 331 to come out to the front of the nozzle guide 310.

In this state, the guide rod slider 510 is lifted up, and the end portion of the guide rod slider 510 rises above the arcuate groove 420c of the upper rotating body 420. The bending arm 615 is moved downward and the end portion of the bending arm 615 moves out of the bending arm passage hole 420b of the upper rotating body 420 and enters the bending arm passage hole 430b of the lower rotor 430.

The metal strip to be bent is led out of the nozzle guide 310 to drive the cylinder 530 to lower the guide rod slider 510 so that the metal strip is inserted between the guide rods 513 and 515 do. The guide rod slider 510 is moved downward by driving the cylinder 530 and the metal strip to be bent is pulled out from the rear side of the strip guide portion 331 to the front side of the nozzle guide 310, 513, and 515, respectively.

The upper rotator 420 and the lower rotator 430 are rotated to rotate the upper rotator 430 while the metal strips protruding forward of the nozzle guide 310 are sandwiched between the guide rods 513 and 515 as shown in FIG. 420 and the bending arm passage hole 430b of the lower rotating body 430 are displaced right or below the metal strip and then the cylinder 613 is operated to move the bending arm 615 Passes through the bending arm passage hole 430b of the lower rotary body 430 and is fitted into the bending arm passage hole 420b of the upper rotary body 420. [ The bending arm 615 passes through the bending arm passage hole 430b of the lower rotating body 430 to rotate the upper rotating body 420 and the lower rotating body 430, So that the metal strip can be pushed to the side where it is to be bent.

7 shows a state in which the cylinder 613 is driven to bend the metal strip in a clockwise direction so that the bending arm 615 passes through the bending arm passage hole 430b of the lower rotating body 430 from the front of the metal strip, In this state, the upper and lower rotors 420 and 430 are rotated in a clockwise direction at a desired angle so that the bending arm 615 is inserted into the guide rod (not shown) 513, and 523 in a clockwise direction so that the front side of the metal strip is first bent.

8, the rotation of the upper rotating body 420 and the lower rotating body 430 is stopped and the metal strip is moved from the rear side of the strip guide portion 331 to the front side of the nozzle guide 310 . The metal strip exiting the outlet 310b of the nozzle guide 310 contacts the side surface of the bending arm 615 with the guide rod 513 as a bending axis, Bend.

9 shows a state in which the cylinder 613 is driven to bend the metal strip in the counterclockwise direction so that the bending arm 615 passes through the bending arm passage hole 430b of the lower rotating body 430 from behind the metal strip, The upper and lower rotors 420 and 430 are rotated in a counterclockwise direction at a desired angle in this state so that the bending arm 615 is guided by the guide hole 420a, Thereby pushing the side of the metal strip between the rods 513 and 515 in a counterclockwise direction to cause the front side of the metal strip to be first bent.

10, the rotation of the upper rotating body 420 and the lower rotating body 430 is stopped and the metal strip is moved from the rear side of the strip guide portion 331 to the front side of the nozzle guide 310 . The metal strip exiting the outlet 310b of the nozzle guide 310 contacts the side surface of the bending arm 615 with the guide rod 515 as a bending axis, Bend.

By bending the metal strip in the desired direction by firstly bending the metal strip while pushing the metal strip from the rear side of the strip guide portion 331 to the front side of the nozzle guide 310 by this operation process, The bending of the arc shape can be performed in a short time.

To facilitate understanding of the operation of the present invention, some components are omitted and will be described again with a plan view.

As shown in Fig. 11, the metal strip to be bent is pushed to the rear of the strip guide portion 331 to be pulled out to the front of the nozzle guide 310. [ In this state, since the metal strip is directly above the bending arm passing hole 420b of the upper rotating body 420 and the bending arm passing hole 430b of the lower rotating body 430, even when the cylinder 613 is driven, 615 are prevented from being caught in the bending arm passage holes 420b of the upper rotating body 420 through the bending arm passage holes 430b of the lower rotating body 430 due to the interference of the metal strips.

Therefore, as shown in FIG. 12 or 14, the upper rotating body 420 and the lower rotating body 430 are rotated such that the bending arm 615 can push the metal strip toward the bending side.

12 is a view for bending the metal strip in the clockwise direction. The bending arm passing hole 420b of the upper rotating body 420 and the bending arm passing hole 430b of the lower rotating body 430 are located on the front side of the metal strip have.

14 is a view for bending the metal strip in the counterclockwise direction. The bending arm passage hole 420b of the upper rotating body 420 and the bending arm passage hole 430b of the lower rotating body 430 are passed through the metal strip Is located.

In order to bend the metal strip in the clockwise direction, the upper rotating body 420 and the lower rotating body 430 are rotated counterclockwise so that the bending arm of the upper rotating body 420, the hole 420b, The bending arm hole 430b of the rotating body 430 is positioned at the front side of the metal strip and the bending arm 615 is driven to move the bending arm hole 430b of the lower rotating body 430, And is inserted into the bending arm passage hole 420b of the upper rotating body 430. [ When the upper rotating body 420 and the lower rotating body 430 are rotated in the clockwise direction, they pass through the bending arm passing holes 430b of the lower rotating body 430 and are passed through the bending arm passing holes 420b The bending arm 615 bends the front side of the metal strip primarily by pushing the side of the metal strip between the guide rods 513 and 515 in the clockwise direction as shown in Fig.

The rotation of the upper rotating body 420 and the lower rotating body 430 is stopped while the front side of the metal strip is first bent as shown in Figure 13 and the metal strip is guided from the rear side of the strip guide portion 331 to the nozzle guide 310, The metal strip exiting the outlet portion 310b of the nozzle guide 310 contacts the side surface of the bending arm 615 with the guide rod 513 as a bending axis and moves along the first bending direction And bent at a desired angle.

In order to bend the metal strip in the counterclockwise direction, the upper rotating body 420 and the lower rotating body 430 are rotated clockwise to move the bending arm 420a and the lower rotating body 420b of the upper rotating body 420, The bending arm hole 430b of the entire body 430 is positioned behind the metal strip and the rear side of the bending arm hole 430b of the lower rotor 430 is moved to the rear by driving the cylinder 613, And is inserted into the bending arm passage hole 420b of the upper rotating body 430. [ When the upper rotating body 420 and the lower rotating body 430 are rotated counterclockwise, they pass through the bending arm passing holes 430b of the lower rotating body 430, The bending arm 615 sandwiched between the metal strips 420b bends the front side of the metal strip first while pushing the side surface of the metal strip counterclockwise as shown in Fig.

15, the rotation of the upper rotating body 420 and the lower rotating body 430 is stopped and the metal strip is moved from the rear side of the strip guide portion 331 to the front side of the nozzle guide 310 The metal strip that exits the outlet 310b of the nozzle guide 310 contacts the side surface of the bending arm 615 with the guide rod 515 as a bending axis while following the first bending direction Bend at an angle.

By bending the metal strip to the front side of the nozzle guide 310 from the rear side of the strip guide portion 331 by bending the metal strip in the desired direction by the above operation process, the bending unit is repeatedly The bending of the curved portion in the channel letter can be performed in a short time without driving.

1 is a view showing an outer shape of a metal strip bending apparatus according to the present invention.

2 is an exploded perspective view of the metal strip bending apparatus.

FIG. 3 is a view showing a part of the metal strip bending apparatus cut out to show the inside of the apparatus.

Figure 4 is a side view of Figure 3;

Fig. 5 is a view for explaining the operation of the present invention, in which the guide rod slider and the bending arm are not driven. Fig.

6 is a view for explaining the operation of the present invention, in which the guide rod slider is driven and the bending arm is not driven.

FIG. 7 is a view for explaining the operation of the present invention, in which a guide rod slider and a bending arm are driven to bend a metal strip in a clockwise direction. FIG.

8 is a view for explaining the operation of the present invention, showing a state in which a metal strip is pushed clockwise in a state in which a guide rod slider and a bending arm are driven.

FIG. 9 is a view for explaining the operation of the present invention, in which a guide rod slider and a bending arm are driven to bend a metal strip in a counterclockwise direction.

10 is a view for explaining the operation of the present invention, showing a state in which the metal strip is pushed counterclockwise in a state in which the guide rod slider and the bending arm are driven.

Fig. 11 is a view for explaining the operation of the present invention, in which some of the components of Fig. 6 are viewed from above.

FIG. 12 is a view for explaining the operation of the present invention, in which some of the components of FIG. 7 are viewed from above.

13 is a view for explaining the operation of the present invention, in which some of the components in the state of FIG. 8 are viewed from above.

FIG. 14 is a view for explaining the operation of the present invention, in which some components of the state of FIG. 9 are viewed from above.

FIG. 15 is a view for explaining the operation of the present invention, in which some elements of the state of FIG. 10 are viewed from above.

Description of the Related Art [0002]

10 - Metal strip bending device

111 - Main plate

111a - bending arm passing groove

111b, 111c - guide rod receiving grooves

113 - upper plate

115 - Lower plate

125 - Upper bending rotor cover

127 - Drive gear cover

200 - Bending unit drive unit

210 - motor

213 - drive shaft

215 - upper drive gear

300 - Metal strip guide unit

310 - Nozzle Guide

331 - Channel Guide

400 - bedding unit

500 - Guide rod drive unit

530 - Cylinder

533 - Sliding carriage

Claims (24)

A metal strip guide unit having a passage through which a metal strip passes in a longitudinal direction; Wherein a bending arm hole is formed in the upper portion of the outlet of the metal strip guide unit with the metal strip guide unit interposed therebetween to allow and support the movement of the bending arm, And a bending arm which is rotatably installed at a lower portion of the outlet of the metal strip guide unit and which allows the bending arm to move and supports the bending arm, A bending unit including a lower bending rotating body having a through hole formed therein; And a guide rod guide unit configured to guide the end of the guide rod downward through the guide rod passage groove of the upper bending rotating body; A bending arm which passes through a bending arm passage hole of the lower bending rotating body and is received into a bending arm through hole of the upper bending rotating body; and a bending arm which is attached to a lower portion of the lower bending rotating body, Passing through the bending arm passage hole of the bending rotating body and the guide rod receiving groove of the main plate formed between the upper bending rotating body and the lower bending rotating body and entering the bending arm passing hole of the upper bending rotating body A bending arm drive unit including bending arm guide means for guiding the bending arm to be supported; A bending unit driving means for driving the bending unit And bending the metal strip. The method according to claim 1, Wherein the guide rod guiding means includes a guide rod slider to which the guide rod is attached and a cylinder which drives the guide rod slider upward and downward. The bending apparatus of claim 2, wherein the guide rods are two bends of the metal strip. 4. The bending device according to claim 3, wherein, when the guide rod slider descends, the ends of the guide rods enter the guide rod receiving grooves formed in the main plate. 5. The bending device of claim 4, wherein the metal strip passes between the two guide rods. The method according to claim 1, Wherein the bending arm guide means includes a cylinder for driving the bending arm up and down. The method of claim 6, Wherein the guide rod guiding means includes a guide rod slider to which the guide rod is attached and a cylinder which drives the guide rod slider upward and downward. The bending device of claim 7, wherein the guide rods are two metal strip bending devices. The bending device according to claim 8, wherein, when the guide rod slider descends, the ends of the guide rods enter the guide rod receiving grooves formed in the main plate. The bending device of claim 9, wherein the metal strip passes between two guide rods. The method according to claim 1, Wherein the metal strip guide unit is composed of a nozzle guide and a metal strip guide unit positioned behind the nozzle guide, and the metal strip is supplied from the rear of the metal strip guide, and is forwarded to the nozzle guide to bend the metal strip. The method of claim 11, Wherein the nozzle guide has upper and lower support rings having the same central axis on both sides with a nozzle guide body portion formed with a guiding outlet portion through which the metal strip exits and the upper bending rotation body is supported by the lower support ring, And the lower bending rotating body is installed on the affected part. The method of claim 12, Wherein the guide rod guiding means includes a guide rod slider to which the guide rod is attached and a cylinder which drives the guide rod slider upward and downward. 14. The bending device of claim 13, wherein the guide rod has two bends. 15. The bending device according to claim 14, wherein when the guide rod slider descends, the ends of the guide rods enter the guide rod receiving grooves formed in the main plate. 16. The bending device of claim 15, wherein the metal strip passes between the two guide rods. 18. The method of claim 16, Wherein the bending arm guide means includes a cylinder for driving the bending arm up and down. 18. The method of claim 17, Wherein the guide rod guiding means includes a guide rod slider to which the guide rod is attached and a cylinder which drives the guide rod slider upward and downward. 19. The bending device of claim 18, wherein the guide rod has two bends. The bending device according to claim 19, wherein, when the guide rod slider descends, the ends of the guide rods enter the guide rod receiving grooves formed in the main plate. 21. The bending device of claim 20, wherein the metal strip passes between two guide rods. A metal strip guide unit having a passage through which a metal strip passes in a longitudinal direction; A guide rod unit comprising a guide rod and guide rod guiding means for positioning the guide rod in front of the metal strip guide unit from which the metal strip exits; A bending arm drive unit including a bending arm and bending arm guide means for positioning the bending arm in front of the guide rod; A bending unit for rotating the bending arm in a plane to push the front side of the metal strip exiting the metal strip guide unit from the side to bend for the first time; A bending unit driving means for rotationally driving the bending unit; The metal strip is pushed longitudinally so as to come out of the metal strip guide unit so that the rear side of the metal strip which is first bent in the front side is bent in a second direction while the metal strip is in contact with the side surface of the bending arm, A bending device for a metal strip comprising strip straight guide means. 23. The method of claim 22, Wherein the guide rod guiding means includes a guide rod slider to which the guide rod is attached and a cylinder which drives the guide rod slider upward and downward. 23. The bending device of claim 22, wherein the bending arm guide means comprises a cylinder for driving the bending arm up and down.

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