KR20010015352A - Apparatus for Bending a Cutting Blade - Google Patents

Abstract

PURPOSE: A cutting blade folding device is provided to increase a folding operation range, a folding angle by rotating a folding element only in case of folding under the control of a control element which selectively connects the folding element to either of a fixing element or a driving element. CONSTITUTION: A cutting blade folding device includes fixing elements(150), a cylindrical element(170) fixed to the fixing element and formed with a penetrated slit(172) for inserting a cutting blade material, a pair of folding elements(180) for carrying out the folding of the cutting blade material by rotating clockwise and counterclockwise around the cylindrical element with respect to a central shaft of the cylindrical element, driving elements(140) to be driven by motors for rotating the folding element with respect to the central shaft of the cylindrical element, and a control element(190) for selectively connecting or disconnecting the folding element to or from the driving element or the fixing element.

Description

Cutting blade bending device {Apparatus for Bending a Cutting Blade}

The present invention relates to a bending device for bending a cutting blade used for cutting and bending a material such as paper sheet, leather, fabric, synthetic resin sheet to the required shape.

In particular, bending of the cutting blade employing the control member to rotate the bending member to the bending position only when bending the band-shaped cutting blade material (strip), and to keep the bending member in a fixed position when the bending operation is not performed. Relates to a device.

In addition, in the present invention, when two bending members are employed, only the bending member performing the bending operation is moved to the bending position, and the remaining bending members are stopped in place, thereby limiting the bending angle by the remaining bending members. The present invention relates to a cutting blade bending device.

In general, the cutting blade is used in a state in which the sheet-shaped material is cut in the required shape and mounted on a wooden board to form a bent line or a cut line on one surface thereof. The material to which the cutting and bending work has been applied by the above-described cutting blade-in particular, when the material is a paper sheet such as cardboard-can be folded and used in the form of a box.

Prior arts of such cutting blade bending devices include US Pat. Nos. 5,771,725 and 5,870,919.

US 5,771,725 has a problem in that the bending angle is limited because all of the pair of bending members rotate in the bending operation. That is, when the cutting blade material is continuously bent in the same direction, there is a problem in which the bending member which does not perform the bending operation and the cutting blade material interfere with each other.

In addition, although the notch forming portion is disclosed in the US Pat. No. 5,771,725, the notch forming portion is driven by a separate driving source (motor) in a state where it is installed on the front side regardless of the above-described cutting blade bending device. If the operating time of the drive source is not set correctly in connection with the operating time of the bending device, there is a problem that the final shape of the cutting blades bent from the bending device is significantly different from the intended shape.

In addition, similar to the above-described notch cutting device, the cutting device for cutting the cutting blade material for which the bending operation is completed is not associated with the bending device, so that similar problems arise.

US 5,870,919 allows the bending member used for the bending operation to move up and down, and only one bending member performs the bending operation during bending. However, since the driving means for moving the bending member up and down during rotation of the bending member interfere with each other, there is a problem that the range of the bending operation, that is, the bending angle is limited. In addition, since a cutting device for cutting the cutting blade material for a predetermined length after completion of the bending operation is not associated with the bending device, a similar problem arises as in the patent of US 5,771,725.

An object of the present invention is to increase the bending range that can be bent during the bending operation of the cutting blade by rotating the bending member only when performing the bending operation.

In addition, when the pair of bending members are employed, only the bending member for performing the bending operation is rotated, and the remaining bending member that does not perform the bending operation is not rotated, it is an object to increase the bending range.

In addition, in order to make the bending device compact, an object thereof is to enable the notch forming member, the cutting member, and the bending member to be driven by a driving member for driving the bending member.

1 is a cross-sectional view of the main portion of the cutting blade bending device according to the present invention from the front.

Figure 2 is an exploded perspective view showing a cutting blade bending device according to the present invention.

3 is a perspective view showing a raised and lowered state of the key according to the present invention.

4A and 4B are diagrams for explaining the operation of the key in the cutting blade bending device of the present invention, a longitudinal cross-sectional view of the coupled state along the line A-A of FIG.

4C is a cross-sectional view of the slit portion of the cylinder, taken along line B-B in FIG. 2.

5 is a cross-sectional view of the main portion of the cutting blade bending apparatus of another embodiment according to the present invention from above.

Figure 6 is a cross-sectional view of the cutting middle portion of the cutting blade bending apparatus according to the present invention.

7a and 7b is a view showing a notch cutting device of the cutting blade bending device according to the present invention.

8A to 8D are views showing the processing shape of the cutting blade cut by the cutting device constituting the cutting blade bending device of the present invention.

[Description of Drawing Reference]

100 ... cutting blade material (strip), 110 ... drive motor,

120 ... drive shaft, 130 ... drive gear,

140 ... driven gear, 142 ... protrusion,

144 cylinders, 146, 148, 149 holes,

150 ... die die, 160 ... bearing,

170 circumference, 172 slit,

180 bending member, 182 groove,

190 ... tall, 192 ... air cylinder,

200 feed rollers, 205 support rollers,

210 ... needle bearing, 220 ... transfer gear,

230 ... transfer drive gear, 240 ... transfer motor,

250 ... die die, 260 ... notch cutting member,

270 pressing member, 280 fixed cutting member,

290 ... moving cutting member, 300 ... pillar.

The present invention and the fixing member to solve the above problems; A cylindrical column formed with a slit through which the cutting blade material can be inserted and fixed to the fixing member; A bending member which rotates around the cylindrical column about the central axis of the cylindrical column and performs bending; A driving member for rotating the bending member about a central axis of the cylindrical column; Consists of a control member for selectively connecting or disconnecting the bending member to the fixed member or the drive member.

That is, when bending the cutting blade material stopped at a predetermined position through the slit of the cylinder, the control member connects the driving member and the bending member so that the driving member and the bending member interlock. Therefore, when the driving member rotates, the bending member rotates and performs the bending operation. Even when the bending member returns after the bending is completed, since the driving member and the bending member are connected by the control member, when the driving member rotates in the direction opposite to the bending direction, the bending member returns.

In addition, the present invention has two bending members to enable the clockwise and counterclockwise bending operation, so that the remaining bending member is not relative to the fixing member when one bending member performs the bending operation. It is preferable that the control member is connected to the fixing member.

That is, the bending member performing the bending operation rotates in association with the driving member, while the remaining bending member not performing the bending operation is connected to the fixing member so that the bending member does not move relative to the fixing member. Therefore, since the remaining bending member that does not perform the bending operation does not rotate, the bending operation range, that is, the bending angle of the bending member can be increased.

In addition, the present invention is a driven gear driven by the drive member is a motor, the driven gear is rotatably installed in the fixed member via a bearing to form the same center as the cylindrical cylinder, the control member and the bending member during bending work It is preferable that a radial groove is formed so that can be interlocked.

In addition, the present invention preferably forms a projection on the inner surface of the center of the driven gear.

When the driven gear rotates, the protrusion rotates, and the bending member rotates by the rotation of the protrusion. Since the control member connects the bending member and the driving member during the bending operation, the bending member and the driving member rotate together with each other even without the protrusion. However, by providing the protrusion, the load on the control member during the bending operation can be reduced. Will be.

In addition, the present invention preferably includes a conveying portion for conveying the cutting blade material.

The conveying unit is preferably made of a conveying roller that rotates by the conveying gear and a support roller that supports the cutting blade material.

In addition, the present invention preferably includes a notch forming portion for forming a notch in the cutting blade material by rotational driving of the drive member.

The notch forming part includes a pressing member capable of vertically moving through a through hole formed in the fixing member and the driving member, a fixing die supporting a cutting blade material when forming the notch, and a notch cutting member pressed by the pressing member. It is preferable.

The driving source for rotating the pressing member to form the notch is the rotational force of the driving member, and because the control member connects the fixed member and the bending member during the notch forming operation, the bending member does not rotate and the driving member rotates the pressing member. .

In addition, the present invention preferably includes a cutting portion for cutting the cutting blade material by the rotational drive of the drive member.

The cutting part may move up and down through the through-holes formed in the fixing member and the driving member, and the fixed cutting member is fixed in the cutting operation and the moving cutting member moves linearly together with the driving member in the cutting operation. Do.

The driving source for linearly moving the moving cutting member is the rotational force of the driving member. During the cutting operation, the control member connects the fixed member and the bending member. Therefore, the bending member does not rotate and the moving cutting member moves linearly by the rotation of the driving member. Will cut.

Hereinafter, with reference to the accompanying drawings, it will be described a preferred embodiment of a cutting blade bending apparatus according to the present invention.

1 is a cross-sectional view of the main portion of the cutting blade bending apparatus according to the present invention from the front.

The fixing member for fixing the components of the bending device according to the invention is shown in Figure 1 as a fixed die 150. The drive shaft 120 which is vertically coupled to the motor shaft of the drive motor 110 is vertically coupled to the center of the surface of the fixed die 150 spaced up and down is rotatably coupled via the bearing 160.

A pair of drive gears 130 are fixed to upper and lower ends of the drive shaft 120 so that the plane side of the gear faces the fixed die, respectively.

On the outer circumference of the drive shaft, a feed roller 200 having a feed gear 220 installed at a lower side thereof is installed via a needle bearing 210, and cooperates with the feed roller to transfer the cutting blade material 100. A support roller is installed adjacent to the feed roller.

The transfer driving gear 230 for rotating the transfer gear is installed on the same plane as the transfer gear.

The driven gear 140, which is engaged with the drive gear 130 and rotates, has a cylindrical portion 144 protruding from the center portion, and the cylindrical portion 144 is inserted into a cylindrical cylinder on the fixed die 150 spaced up and down. The hole is rotatably provided via the bearing 160.

A cylindrical cylinder 170 is installed in the central hole of the driven gear, and the cylindrical cylinder 170 is fixed to the fixed die 150.

A pair of bending members 180 are bent between the inner circumferential surface of the hole and the cylindrical column, and the bending member 180 performs the bending operation while rotating along the outer circumferential surface of the circular cylinder.

In order to support the driven gear 140 and the driving gear 130 freely and at the same time prevent them from being disassembled, another fixing die 150 is provided at the outside thereof.

The above-mentioned fixed die placed relatively inwardly and the outside fixed die are assembled and fastened so as to be decomposable, and the air cylinders can press the keys to the holes drilled adjacent to the cylindrical insertion holes on the outermost fixed die, respectively. (192) is installed.

The pressing member 270 and the cutting device for cutting the cutting blade material are configured to press the cutting blade of the notch cutting device through a plurality of holes (through holes) coaxially drilled into the inner and outer fixed dies and the driven gear. The fixed cutting member 280 and the moving cutting member 290 are installed to be elevated.

A notch forming apparatus is installed on the cutting blade material path between the transfer roller and the cylindrical column so as to form a notch in the cutting blade material by the pressing action of the pressing member.

Here, reference numeral 240 denotes a transfer motor for rotating the transfer drive gear.

On the other hand, the lifting and lowering of the pressing member 270, the fixed cutting member 280 and the moving cutting member 290 is achieved by a cylinder mechanism or a solenoid mechanism using a fluid.

2 is an exploded perspective view showing the cutting blade bending device shown in FIG.

Here, the pair of fixed dies 150 are spaced apart from each other by a nut-shaped spacer or other spacers at regular intervals.

In addition, each of the fixed die 150, a pair of driven gear 140 that is rotated by receiving power from the drive gear 130, rotatably installed on the outer surface of the fixed die, the drive gear and the driven gear In order to support them with a rotating material and at the same time prevent them from being disassembled, other fixing dies 150 are placed outside of them and installed.

The inner and outer fixing dies are assembled using fastening means such as bolts for easy disassembly and joining, and the cylindrical dies are inserted into the cylindrical insertion holes coaxially drilled in the center of the inner and outer fixing dies and driven gears. Insert (170).

A pair of bending members 180 are located between the inner surface of the holes and the outer surface of the cylindrical column, and the cylindrical column is fixed to a circular hole formed in the fixed die. A circular groove is provided around the circular hole of the fixed die so that the bending member can rotate.

The circular hole and the circular groove may be provided in the pillar support 300 separate from the fixing die, and the pillar support 300 may be fixed by pressing the pillar support 300 into the fixing die. In this case, the fixing die may be provided with a through-hole for pressing the pillar support 300.

The driven gear 140, which is engaged with the drive gear 130 and rotates, has a cylindrical portion 144 with a central hole protruding therefrom, and a cylindrical cylinder is inserted on the inner fixed die on which the bearing 160 is mounted as shown in FIG. The cylinder is inserted into the hole to allow rotation.

In addition, the outer surface of the driven gear is formed with a key groove in the radial direction of the driven gear, the inner end of the key groove is in communication with the cylindrical insertion hole.

Key grooves corresponding to the key grooves are also provided on the inner surface of the outer fixing die located outside the driven gear.

The key 190 for controlling the bending member to be fixed or rotated while being lifted between the key grooves is configured to be always inserted into any one of the key grooves, and in particular, a key groove formed in the outer fixed die. The key pressing means for raising and lowering perpendicularly to the key groove is provided.

In the present embodiment, the shape of the driven gear and the drive gear is preferably a spur gear, and in order to increase the torque of the driven gear meshed with the drive gear, the driven gear is reduced more than the drive gear. Although gear trains are used, the use of a geared motor as a driving motor can reduce the pitch source of the driven gear, thereby reducing the size of the bending device.

In addition, in the present embodiment, it is assumed that the key pressurization means is an air cylinder 192, but in addition to using an electric force such as a solenoid, using a pressure of a fluid such as a hydraulic cylinder, or using a mechanical force may be used. Can be.

Of the above components, the bending member 180 for performing the bending operation while moving the surface of the cylindrical column 170, the groove is formed so that the inner end of the key 190 can selectively enter or exit In some cases, a protrusion 142 for pressurizing the bending member may be additionally formed on the inner surface of the cylindrical portion of the driven gear.

In addition, a slit 172 through which the band-shaped cutting blade material 100 shown in FIG. 1 passes is processed at a longitudinal middle point of the cylindrical column serving as the rotation center of the bending member.

As shown in FIG. 4C, the slit 172 has a tapered shape in which the cutting blade material enters, so that the entry of the material is easy, and the shape of the column of the bending part is considered in the bending work range. It is largely picked.

The cylinder may be formed of two semi-cylinders divided in the longitudinal direction.

On the other hand, the bending device of the basic configuration described above can be modified in various forms, for example, by drilling a plurality of holes (146, 148) coaxially to the driven gear 140 and the inner and outer fixed die 150 described above, The pressure member 270 of the notch cutting device may be freely mounted or lifted through the holes, or a cutting device for cutting the cutting blade material 100 may be installed as a lifting material.

3 is a perspective view illustrating a lifting state of a key for controlling the aforementioned bending member to be selectively connected to a fixed die or a driven gear.

In the figure, the key grooves are provided in the radially concave key groove of the driven gear 140, the keys 190 are respectively elastically supported, the surface not in contact with an elastic body such as a spring by the key pressing means, for example, the air cylinder 192 It is to be selectively pressurized or depressurized by a key press means such as a piston rod of.

That is, as illustrated in FIGS. 4A and 4B, when the piston rod is contracted by the operation of the air cylinder 192, the key 190 contracts by the elastic force of the spring embedded thereunder. Ascending toward the end is finally inserted into the key groove provided on the inner surface of the fixed die, when the piston rod is extended is inserted into the key groove formed on the surface of the driven gear.

Accordingly, the key serves as a control member for moving the bending member selectively with the fixed die or the driven gear while moving along the groove of the bending member.

5 shows a key groove arrangement in a case different from the above-described embodiment, and thus, the smaller the angle between the key grooves or the smaller the width of the bending member, the larger the bending angle.

7a and 7b of the accompanying drawings shows a notch cutting device of the cutting blade bending device according to the present invention. In the notch cutting die, a plurality of blanks are perforated on the surface so that chips cut from the band-shaped cutting blade material can be easily discharged. While fastening the housing of the notch cutting member 260 having a plurality of cutting blades capable of moving toward the fixed die on one surface side of the fixing die 250 for notch cutting with a fastening means such as a bolt, the cutting blade and the notch cutting. An elastic body such as a spring is inserted between the fixing dies so that the cutting blade returns to its original position after the cutting operation so that the next notch operation can be performed.

The action of the cutting blade bending device of the present invention configured as described above is as follows.

Here, the cutting blade material 100, which is the workpiece, is installed in the state where the conveyance is not disturbed over the entire length of the bending device, as shown in FIG.

As shown in FIG. 6, since the cutting blade material is sandwiched between the support roller 205 and the feed roller 200, when the feed motor 240 shown in FIG. 1 is driven, the cutting blade material is connected to the motor shaft of the feed motor. The connected transfer drive gear 230 rotates, and the transfer gear 220 engaged with the transfer drive gear rotates in the opposite direction.

Therefore, the feed roller integrated with the feed gear rotates, and the rotational force is transmitted to the support rollers as it is, using the cutting blade material as the friction material, so that the support rollers rotate in the opposite direction. The cutting blade material 100 sandwiched between the rollers 200 runs forward.

When it is necessary to form the notch, the key is located in the groove provided in the fixed die, so that the bending member does not rotate even if the driven gear rotates.

Subsequently, when the cutting blade material is fed to the notch cutting device placed on the traveling path and placed in the predetermined position, the pressing member 270 shown in FIG. 2 is provided with the inner and outer fixing dies 150 forming the bending device. The hole 146 drilled in the driven gear 140 is vertically lowered to the position where the notch cutting device is installed.

When the driven gear rotates, the pressing member 270 inserted into the hole 146 of the driven gear rotates, and the pressing member 270 selectively presses the cutting blades constituting the notch cutting device to feed the fed cutting blade. Notches are formed in the material 100.

Subsequently, the cutting blade material is bent on the inner surface of the cylindrical portion 144 of the cylindrical cylinder and the driven gear 140 with the slit 172 on the cylindrical cylinder 170 shown in FIG. 2 and the cylindrical cylinder as the center of rotation. When the cutting blade material 100 reaches the bending position, the above-described transfer motor stops and no longer proceeds.

In this state, when the key 190 located in the key groove on the outer fixing die 150 is pressed down by the piston rod of the air cylinder 192 shown in FIG. 2, the key 190 on the driven gear is positioned. .

Since one end of the key 190 is always located in the groove of the bending member, when the key is located in the groove of the fixing die, the bending member is fixed. When the key is located in the groove of the driven gear, the driven gear and the bending member are interlocked.

If the drive gear is continuously rotated in this state, the inner end portion of the key is fitted into the groove 182 shown in Fig. 3 and the remaining portion is also bent into the key groove on the driven gear. 180 rotates the cylindrical column 170 to the center of rotation to bend the cutting blade material.

In this process, the bending member that does not perform the bending operation, since the key 190 located in the groove in the fixed die is connected to the groove 182 of the bending member, even if the driven gear continues to rotate, The bending member which does not do not rotate. At this time, a friction reducing member is provided between the spring and the key, and the friction reducing member slides while contacting the fixed die when the driven gear rotates.

Thus, according to the bending device of the present invention, while one of the bending members 180 provided in pairs is rotated to bend the cutting blade material, the bending member not performing the bending operation remains in place. In addition, since the key stays in the groove of the stationary die and the key is connected to the groove of the bending member, the bending member does not rotate even during notch forming and cutting operations, rather than bending.

On the other hand, the projection 142 on the inner surface of the cylindrical portion 144 serves to rotate the bending member 180 during the bending work, and serves to reduce the load on the key during the bending work. Of course, the return movement of the bending member in the return stroke after the bending operation is performed by the key.

Subsequently, the cutting blade material 100 subjected to the bending process is moved forward again to the cutting position as the transfer motor is driven again.

When the cutting blade material arrives at the set cutting position, the feeding stops, and the cutting device consisting of the fixed cutting member 280 and the moving cutting member 290 is drilled in the fixed die and the hole 148 drilled in the driven gear. The cutting is performed by descending through.

The hole 149 drilled in the fixed die is provided with a small hole through which the fixed cutting member 280 passes and a large hole allowing the movement of the moving cutting member 290 during the cutting operation.

The hole 148 drilled into the driven gear to impart a linear movement force to the moving cutting member 290 during the cutting operation is a hole 149 drilled into the fixed die so that the fixed cutting member 280 does not collide with the driven gear. ), Including size.

In the cutting operation, the key is located in the groove of the fixed die and is inserted in the groove of the bending member, so that the bending member does not rotate even if the driven gear rotates.

8A to 8D are views showing the processing shape of the cutting blade cut by the cutting device, it is preferable to control by a control device such as a computer so that the cutting operation is performed in conjunction with the rotation of the driven gear, Detailed description of this is mentioned in detail in the applicant's patent application No. 182069.

As described above, the cutting blade bending device of the present invention, by the control member for selectively coupling the bending member to the fixed member or the drive member, the bending member can be rotated only when the bending operation, the bending operation In other words, the bending angle can be increased.

In addition, the cutting blade bending device of the present invention, when installing two bending members, the bending member that does not perform the bending operation is fixed to the fixing member by the control member, the bending operation by the bending member does not perform the bending operation This obstruction is prevented, and the bending angle (range) can be increased.

In addition, even when the notch is formed or the cutting operation is performed, the bending member does not rotate, so that the notch forming member, the cutting member, and the bending member can be driven by the same driving member. Thus, the apparatus is compact.

In addition, since the notch forming work, the bending work and the cutting work are performed by one driving member, there is an advantage that the control object is unified and the control of the device is easy.

Claims (10)

A fixing member; A cylindrical column formed with a slit through which the cutting blade material can be inserted and fixed to the fixing member; A bending member which rotates around the cylindrical column about the central axis of the cylindrical column and performs bending; A driving member for rotating the bending member about a central axis of the cylindrical column; And a control member for selectively connecting or disconnecting the bending member to the driving member or the fixing member. According to claim 1, It is provided with two bending members to enable the clockwise and counterclockwise bending operation, the bending member for performing the bending operation is connected to the drive member by the control member, the remaining bending member is Bending device for cutting blades, characterized in that connected to the holding member by the control member so as not to move relative to the holding member. According to claim 1 or 2, wherein the drive member is a driven gear driven by a motor, the driven gear is rotatably installed on the fixing member via a bearing so as to form the same center as the cylindrical column, during bending work Bending device for cutting blades, characterized in that the groove in the radial direction for receiving the control member is formed so that the control member and the bending member is interlocked. The bending device for cutting blades of claim 3, wherein the driven gear has protrusions formed on a central inner surface thereof. The bending device for cutting blades of claim 1 or 2, further comprising a conveying part for conveying the cutting blade material. The bending device for cutting blades of claim 5, wherein the transfer unit comprises a transfer roller that rotates by a transfer gear and a support roller that supports the cutting blade material. The bending device for cutting blades according to claim 1 or 2, further comprising a notch forming portion for forming a notch in the cutting blade material by rotational driving of the drive member. According to claim 7, wherein the notch forming portion is a pressing member capable of vertically moving through the hole formed in the fixing member and the drive member, a fixed die for supporting the cutting blade material when forming the notch, and a notch pressed by the pressing member Bending device for cutting blades, characterized in that consisting of a cutting member The bending device for cutting blades according to claim 1 or 2, further comprising a cutting portion for cutting the cutting blade material by rotational driving of the drive member. 10. The method of claim 9, wherein the cutting portion is moved up and down through the hole formed in the fixing member and the drive member, the fixed cutting member is fixed during the cutting operation and the moving cutting member to move linearly with the drive member during the cutting operation Bending device for cutting blades, characterized in that