KR100768037B1 - Apparatus for bending cutting blades - Google Patents

Abstract

A bending device of a cutting blade is provided where the bending member needs not be supported to or separated from one of drive gears by connecting a single bending member to the upper and lower drive gears in such a manner that the bending member does not impede path of the bent cutting blade, is provided. A bending device of a cutting blade comprises a drive gear(110a) which is rotatably installed on an upper surface of an upper frame(1) and in which an arc-shaped through hole(111) is vertically formed, a drive gear(110b) which is rotatably installed on a lower surface of a lower frame(2), and in which the arc-shaped through hole is vertically formed, a guiding nozzle(130) installed between the upper and the lower frames to guide a cutting blade(200) toward the bending member and having a nozzle end portion formed in a pillar shape, and a bending member having an arc-shaped cross section, an end portion connected to a lifting shaft, and a longitudinal slit formed in the center thereof such that half of one side of the slit is opened to form an opening, and disposed on the front side of the nozzle end portion by passing through the through holes formed in the drive gears.

Description

Cutting blade bending device {Apparatus for bending cutting blades}

1 is a perspective view showing a conventional cutting blade bending device.

Figure 2 is a perspective view showing a cutting blade bending apparatus according to an embodiment of the present invention.

3 is a perspective view showing only the bending member separated from the cutting blade bending apparatus according to an embodiment of the present invention.

Figure 4 is a front view showing only the bending rotating body in the cutting blade bending apparatus according to an embodiment of the present invention, Figure 4 (a) is a state in which the bending member is set to both sides closed position that can be bent to both sides FIG. 4B is a view showing a state in which the bending member is set to one side closing part, which is a position where only one side can be bent.

FIG. 5 is a view illustrating a process of bending a cutting blade discharged from a nozzle end by a bending member according to an embodiment of the present invention, and FIG. 5 (a) is a cross-sectional view showing a state before bending; 5B is a cross-sectional view showing a state after bending.

FIG. 6 is a view illustrating a process of bending a cutting blade discharged from a nozzle end by a bending member according to an embodiment of the present invention, and FIG. 6 (a) is a cross-sectional view showing a state before bending; 6 (b) is a sectional view showing a state after bending.

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

1: upper frame 2: lower frame

100: bending rotating body 110a, 110b: drive gear

111: arc-shaped through hole 120a, 120b: extension part

130: guide nozzle 131: nozzle hole

132: nozzle end 140: bending member

141: closed on one side 142: closed on both sides

143: slit 144: open

145: Pressing surface 200: Cutting blade

The present invention relates to an apparatus for bending a cutting blade, and more particularly, to a band-shaped cutting blade used for cutting and bending a sheet material such as paper, leather, fabric, synthetic resin, etc. into a box or the like. The present invention relates to a cutting blade bending device for bending.

In general, the cutting blade is attached to a plate and used to form cutting lines and bending lines on sheets of paper, fabric, leather, synthetic resin, and the like. Sheets cut and formed by the cutting blades are required by folding along the bending lines. It can be formed into a box having a size and shape. Therefore, the cutting blades themselves must be bent to form overhead lines in the form of boxes in order to cut and bend the sheets so that they can be assembled into the required box shapes.

1 is a view showing a conventional cutting blade bending device, showing a basic structure for the cutting blade bending device.

Referring to the conventional cutting blade bending device as shown in Figure 1 as follows. First, the cutting blade bending apparatus has an upper and lower frames 1 and 2 as a whole, a guide plate 3 installed therebetween, and a support piece 4a for coupling the frames 1 and 2 and the guide plate 3 to each other. 4b), and a guide nozzle 5 installed inside the guide plate 3, and in addition to the basic configuration, a bending member 13 for bending the cutting blade at the exit portion of the guide nozzle 5 is provided. It is installed.

The bending member 13 uses a single cylindrical member in order to maintain strength in the related art, but recently, a pair of bending members 13 which can be individually elevated in front of the guide nozzle 5 as shown in the drawing. Is using.

That is, as can be seen in Figure 1, the conventional bending apparatus has a drive motor shaft (6), a drive gear (7) integrally coupled therewith, and a driven tooth portion engaging the drive gear (7) ( 9), a pair of upper and lower rotary guide rings (11, 12) mounted to the upper and lower frames (1, 2), and a pair of cylinders which are vertically elevated to the vertical teeth (9) 10 and a pair of bending members 13, which are engaged with the ends of the cylinder 10, respectively, and are disposed perpendicular to the tip of the guide nozzle 5. As shown in FIG.

Looking at the operation of the conventional bending device configured as described above, first, when the cutting blade is drawn by a predetermined length through the guide nozzle (5) in a state in which the bending member 13 coupled to the cylinder 10 on one side, the driving motor As the driven tooth 9 rotates in accordance with the rotation of the shaft 6 and the drive gear 7, the cutting blades are bent in one direction within the range of the guide groove 14.

And, when bending in the opposite direction to the above, the cylinder 10 on one side is lowered and the bending member 13 is lowered by the cylinder 10 on the other side to be bent in the opposite direction as described above.

However, such a conventional bending device constitutes a bending rotary body 8 separately from the drive motor shaft 6, and a cylinder for lifting and lowering the bending member 13 in the axial direction. 10 and the binding member 15, which is bound at the lower portion when the bending member 13 is lowered and rotates together, is installed, and the configuration thereof is not only complicated, but also the bending member 13 on one side is separated and the other side. In the process of supporting the bending member 13, the bent cutting blade generates interference blocking the support release passage of the bending member 13.

Therefore, the technical problem of the present invention for solving the above problems is to be able to bend the cutting blade entered into the two sides by fixing the bending member to the upper and lower frames, coupling a single bending member to the drive gear of the upper and lower parts Thus, the bending member is supported on one side of the driving gear as in the prior art and does not need to be detached, and the bending member is formed so that the bending member does not interfere in the path of the bent cutting blade, so that the bending member of one side is separated and the bending member on the other side. The cutting blade that is bent in the process of supporting the blockage does not cause interference with the support release path of the bending member, and the cutting blade can be bent in both directions or bent in only one direction, as needed, and the angle is precisely adjusted and It is to provide a cutting blade bending device capable of bending more than 90 degrees.

In order to solve the above technical problem, the present invention includes an upper and lower frames, a guide nozzle for discharging the cutting blade to the distal end between the frame is installed, the cutting blade discharged to the front end of the guide nozzle A bending device for bending the blade at a predetermined angle is installed, the cutting blade bending device for bending the cutting blade discharged to the front end through the guide nozzle at a desired angle according to the execution of the set program, rotatable on the upper surface of the upper frame It is installed to be rotatable, rotatably installed on the lower surface of the lower drive gear lower frame formed with an arc-shaped through hole penetrating up and down, the lower drive gear nozzle end is formed in a columnar shape, the arc is formed with an arc through hole penetrating the upper and lower, Installed between the frame and the lower frame, the cutting blade toward the bending member The guiding guide nozzle and the end are connected to the lifting shaft, and a longitudinal slit is formed at the center, and one side half of the slit has an open part, and passes through a through hole formed in the driving gear and the extension part. It provides a cutting blade bending device including a bending member of the circular arc cross-section disposed on the front of the nozzle end.

The pressing surface of the slit for pressing the side of the cutting blade may be formed thinner than the thickness of the bending member, the width at both sides of the closed portion of the slit may be formed wider than both sides of the nozzle hole.

The lifting shaft may be integrally formed with the bending member, and may be formed to be liftable to be inserted into or separated from the driving gear with the bending member formed at the center thereof.

Hereinafter, a cutting blade bending device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view showing a cutting blade bending device according to an embodiment of the present invention, Figure 3 is a perspective view showing only the bending member separated from the cutting blade bending device according to an embodiment of the present invention.

And, Figure 4 is a front view showing only the bending rotating body in the cutting blade bending apparatus according to an embodiment of the present invention, Figure 4 (a) is set to the both side closed portion where the bending member can be bent to both sides 4 (b) is a view showing a state in which the bending member is set to one side closing part, which is a position where only one side can be bent.

Referring to Figures 2 to 4, the cutting blade bending device according to an embodiment of the present invention, the guide nozzle 130 is installed between the upper and lower frames (1, 2) and a bending device for bending the cutting blades. In the cutting blade bending device for driving, the drive gear (110a) rotatably installed on the upper frame 1, the drive gear (110b) rotatably installed below the lower frame (1), and the upper and lower frames A guide nozzle 130 installed between (1, 2) and the bending member 140 of the circular arc cross section is provided in front of the guide nozzle (13).

In more detail, the cutting blade bending apparatus according to an embodiment of the present invention is provided with upper and lower frames (1, 2) to form a base as in the prior art, between the frames (1, 2) A guide part for guiding the cutting blades 200 is installed, and a guide nozzle 130 for discharging the cutting blades 200 to the tip part is installed at the tip of the guide part.

In addition, the front end of the guide nozzle 130 is provided with a bending rotating body 100, to bend the cutting blade 200 discharged forward through the guide nozzle 130 at a desired predetermined angle. This operation is performed according to the step-by-step execution of the program set by the control unit not shown in the figure.

As shown in Figure 2 and 4, the drive gear (110a) is rotatably installed on the upper surface of the upper frame (1), an arc-shaped through-hole 111 penetrates up and down at a certain distance away from the center Is formed. Therefore, the drive gear 110a can be rotated from side to side, but is fixed to the upper frame 1 and constrained to a predetermined position, so that the movement of the drive gear 110a is limited up and down.

The extension part 120a is formed under the driving gear 110a and is a portion in which a bearing is installed. The extension part 120a may be installed to smoothly rotate the driving gear 110a and the bending member 140. In the inside of the extension portion 120a, a circular arc-shaped through hole in the vertical direction connected to the through hole 111 should be formed like the driving gear 110a to allow the bending member 140 to pass therethrough.

In addition, the drive gear (110b) is rotatably installed on the lower surface of the lower frame (1) symmetrically with the drive gear (110a), an arc-shaped through hole 111 penetrates up and down at a certain distance away from the center. ) Is formed. Therefore, the drive gear 110b can also be rotated from side to side, but is fixed to the lower frame 2 and constrained to a predetermined position, thereby limiting movement up and down.

The extension part 120b is formed on the driving gear 110b and is a portion where a bearing is installed. The extension part 120b may be installed to smoothly rotate the driving gear 110b and the bending member 140. An arc-shaped through hole in the vertical direction connected to the through hole 111 should be formed in the extension part 120b so as to allow the bending member 140 to pass therethrough.

Meanwhile, FIG. 5 is a view illustrating a process of bending a cutting blade discharged from a nozzle end by a bending member according to an embodiment of the present invention, and FIG. 5 (a) is a cross-sectional view showing a state before bending. 5 (b) is a cross-sectional view showing a state after bending.

And, Figure 6 is a view showing a process of bending the cutting blade discharged from the nozzle end in the bending member according to an embodiment of the present invention, Figure 6 (a) is a cross-sectional view showing a state before bending 6 (b) is a cross-sectional view showing a state after bending.

4 to 6, the guide nozzle 130 is installed between the upper frame 1 and the lower frame 2 to guide the cutting blade 200 toward the bending member 140. 132 is formed in a vertical pillar shape, the front surface is provided with a nozzle hole 131 vertically long so that the cutting blade can be discharged.

Next, the bending member 140 of the circular arc cross section is disposed at a predetermined interval coaxially on the front of the nozzle end 132 as a member for bending the cutting blade 200 discharged from the nozzle end 132 to the left or right. 3, the slits 143 are vertically elongated at the center.

When the lifting shaft is lifted by coupling a lifting shaft (not shown) to the end of the bending member 140, the bending member may be lifted up and down. That is, the lifting shaft is coupled to the bending member 140, and can be inserted or removed into or out of the driving gears 110a and 110b by raising or lowering. The driving device for elevating the elevating shaft 150 is not shown in the drawings, but the addition thereof corresponds to a technique that can be easily implemented by those skilled in the art.

The bending member 140 is installed with a predetermined interval with the nozzle end 132, which can cut the cutting blade 200 when bending when the bending member 140 is installed too close to the nozzle end 132. Therefore, it is installed to have a certain interval. The interval between the bending member 140 and the nozzle end 132 may be narrowly or widely adjusted according to the thickness of the cutting blade to be bent.

The slit 143 formed in the bent portion 140 is composed of both side closure portion 142 and one side closure portion 141, the one side closure portion 141 is an open portion 144 having one side open Formed. This can be bent in both directions when bent by the two side closure portion 142, it is formed to be bent in the open direction only when bent by the one side closure portion (141).

That is, when both sides closed portion 142 of the bending member 140 is bent in the state matching the nozzle hole 131 can be bent in both directions, one side closed portion 141 of the bending member 140 nozzle When bending in a state coinciding with the hole 131, it can be bent in only one direction. Raising or lowering the bending member 140 to the position of both side closure portions 142 or the position of both side closure portions 142 may be implemented by the elevation of the above-described lifting shaft.

In addition, the pressing surface 145 of the slit 143 formed in the bent portion 140 is formed thinner than the thickness of the bending member 140, which is to implement a precise bending by reducing the contact area with the cutting blade 200 It is for.

As shown in FIG. 4, the slit 143 is formed to have a width wider than that of the guide nozzle 130, which prevents interference that may occur when the cutting blade 200 is discharged. In order to prevent the shearing force from acting on the cutting blade 200 by leaving a gap in a predetermined range when bending.

The bending member 140 is formed to have an arc-shaped cross section, and may be inserted into or separated from the through hole 111 formed in the driving gears 110a and 110b and the extension parts 120a and 120b. Therefore, the bending member 140 may move in the vertical direction separately from the driving gears 110a and 110b by the lifting and lowering of the lifting shaft.

Referring to Figures 5 and 6 the operation of the cutting blade bending apparatus according to an embodiment of the present invention configured as described above are as follows.

First, the cutting blade 200 passing through the nozzle hole 131 of the guide nozzle 130 in a state in which the distance between the bending member 140 and the nozzle end 132 is properly adjusted according to the thickness of the cutting blade to be bent. ) Is passed through the slit 143 of the bending member 140 installed in the front by a predetermined length to be bent forward, the bending member 140 to the left or right along the front of the nozzle end 132 as set A certain angle is rotated, and thus the pressing surface 145 of the bending member 140 presses the cutting blade 200 from the side to bend the cutting blade 200.

At this time, the pressing surface 145 of the bending member 140 has a width in contact with the cutting blade 200 is narrower than the conventional cylindrical or bar-shaped bending member and bent at a position close to the nozzle end 132 conventional bending Unlike the device, it is possible not only to precise and sharp angle adjustment, but also to bend more than 90 degrees, which could not be realized according to the rotation angle of the bending member 140.

In addition, the bending member 140 may be bent to both sides or only one side of the cutting blade 200, if necessary, which is the front end of the nozzle end 132, both side closed portion 142 or one side closed portion ( By positioning 141).

That is, when both side closure portions 142 of the bending member 140 are located at the nozzle end 132, the cutting blades 200 may be bent on both sides, and the bending end 140 of the bending member 140 may be formed at the nozzle end 132. When the one side closed portion 141 is located, it is possible to bend the cutting blade 200 only in one direction. The lifting and lowering of the bending member 140 to the position of the side closure part 142 or the one side closure part 141 may be implemented by lifting up and down the lifting shaft as described above.

According to the cutting blade bending device of the present invention as described above, by entering the bending member fixed to the upper and lower frames can be entered into the cutting blade to both sides, a single bending member is coupled to the drive gear of the upper and lower Since the bending member is supported on one side of the driving gear as in the prior art and does not need to be detached, the bending member is formed on the path of the bent cutting blade so that the bending member does not interfere, and thus, the bending member on one side is separated and the other side is bent. In the process of supporting the member, the cutting blade does not cause interference to block the release path of the bending member. In addition, if necessary, the cutting blade can be bent in both directions or bend in only one direction. Unlike the related art, precise angle adjustment and bending of 90 degrees or more are possible.

Claims (5)

A guide nozzle 130 having upper and lower frames 1 and 2 and discharging the cutting blades 200 to the tip portion is installed between the frames 1 and 2, A bending device for bending the cutting blade 200 discharged to the front end at a predetermined angle is installed, and the cutting blade for bending the cutting blade 200 discharged to the front end through the guide nozzle at a desired angle according to the execution of the set program. In the bending device, A drive gear 110a rotatably installed on an upper surface of the upper frame 1 and having an arc-shaped through hole 111 penetrating up and down; A drive gear 110b rotatably installed on a lower surface of the lower frame 1 and having an arc-shaped through hole 111 penetrating up and down; The nozzle end 132 is formed in a columnar shape, the guide nozzle 130 is installed between the upper frame 1 and the lower frame 2 to guide the cutting blade 200 toward the bending member 140; And The end is coupled to the lifting shaft, the longitudinal slit 143 is formed in the center, and has an opening 144, one half of one side of the slit 143 is open, the drive gear (110a, 110b) A bending member 140 of an arc cross section disposed on the front surface of the nozzle end portion 132 through a through hole 111 formed in the upper surface of the nozzle hole; Cutting blade bending device comprising a. The cutting blade bending device according to claim 1, wherein the pressing surface (145) of the slit (143) is formed thinner than the thickness of the bending member (140). The cutting blade bending device according to claim 1 or 2, wherein a width at both closed portions (142) of the slit (143) is wider at both sides than the nozzle hole (131). The cutting blade bending device according to claim 1, wherein the lifting shaft is formed integrally with the bending member 140. The cutting blade bending device according to claim 1 or 4, wherein the bending member (140) is inserted or removed from the inside and the outside of the drive gear (110a, 110b) by lifting up and down by a lifting shaft formed at an end thereof.

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