JPH06238510A - Automatic work cutting device - Google Patents

Abstract

PURPOSE:To provide a cam type coil automatic cutting machine capable of carrying out cutting of a work at high speed and in a high grade. CONSTITUTION:A motive power transmission mechanism 11 transmits rotation of a cutting motor 16 to a roller 13 with a cam groove and others. An upper blade drive mechanism 12 converts rotation of a shaft 14 to vertical motion and transmits it to an upper blade 21. A cam groove 131 for reciprocal motion provided on the roller 13 with the cam groove is provided with a member 152 for cam groove trace and it converts rotation of the shaft 14 to motion in the cross direction of a table 15. The cutting motor 16 and a feeding motor (FM) 30 are controlled by an NC controller 32, and each of them supplies motive power to each part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic work cutting device for cutting a continuous work into a fixed length.

[0002]

2. Description of the Related Art A coil cutting machine for drawing a band-shaped metal plate (hereinafter referred to as a band-shaped metal plate) wound in a coil on a drum while taking a curl, and cutting it in a direction perpendicular to its longitudinal direction, Conventionally, it is configured as described below. FIG. 11 is a diagram showing a configuration of a conventional automatic coil cutting machine 5. In FIG. 11, a stacking device 51 stacks the strip-shaped metal plates cut by a cutting machine (cutter) 52. The cutting machine 52 is stretched by an uncoiler (rewinder) 54, the curl is taken by the leveler 53, and the horizontal strip-shaped metal plate (work) 10 is orthogonal to the feed direction at the cutting portion 520. Cut in the direction.

FIG. 12 is a sectional view showing the structure of a rotary cutter 521 used in the cutting machine 52. Figure 1
2, the upper cutter 522 is fixed on the disk 524, and the disk 524 which is rotated by the power from a motor (not shown) cooperates with the lower cutter 523 to cut the strip metal plate 10. The rotary cutter 521 may have a lower cutter 523 fixed to a disk 524.

FIG. 13 is a diagram showing the construction of a Renzo Kukhan type cutter 525 used in the cutting machine 52. Figure 1
3, the upper cutter 522 is fixed to the arm 528, and the movement of the arm 528 cooperates with the lower cutter 523 to cut the strip-shaped metal plate 10. The disk 526 transmits the rotation of a motor (not shown) to the link 527. The arm 528 is driven by the link 527 and reciprocates as indicated by an arrow in the figure. It should be noted that the Renzo Kukan type cutter 525 may be of a type in which the lower cutter 523 is fixed to the arm 528.

The operation of the conventional automatic coil cutting machine 5 will be described below. The uncoiler 54 rotates the drum 540 in the direction of the arrow shown in the drawing, rewinds and stretches the strip-shaped metal plate 10, and guides it to the leveler 53. The leveler 53 guides the metal strip 10 to the cutting machine 52. At the same time, by pressing the feed roller from both sides, the curl and the like caused by the belt-shaped metal plate 10 being wound on the drum 540 are removed. The strip-shaped metal plate 10 having the curl is further guided to the cutting machine 52.

The cutting machine 52 includes feed rollers 529a and 529
The strip-shaped metal plate 10 is guided to the cutting portion 520 by 29b, and when the strip-shaped metal plate 10 is cut by the cutting portion 520, the feeding of the strip-shaped metal plate 10 is temporarily stopped. The cutting unit 520 cuts the strip-shaped metal plate 10 once in a stationary state. Cutting part 52
After cutting the strip-shaped metal plate 10 at 0, the feed roller 529a,
b is again the cutting portion 520 for cutting the strip-shaped metal plate 10 by a predetermined length.
Lead to. The strip-shaped metal plates 10 cut by the cutting machine 52 are guided to the stacking device 51 and stacked.

Here, the deflection provided on the strip-shaped metal plate 10 between the uncoiler 54 and the leveler 53 is for temporarily stopping the feeding when the strip-shaped metal plate 10 is cut by the cutting machine 52 as described above. It is for adjusting the feed rate. That is, the deflection absorbs the difference between the feed speed of the cutting machine 52 and the feed speed of the uncoiler 54, which is caused by the temporary stop of the feed when cutting the strip-shaped metal plate 10.

For this reason, the conventional automatic coil cutting machine 5
However, there is a problem in that an additional installation area is required for the length between the uncoiler 54 and the leveler 53. Further, in the cutting machine 52, the strip-shaped metal plate 1
Since the feeding of 0 is temporarily stopped, there is a problem that it is difficult to increase the cutting speed of the strip-shaped metal plate 10.

As a cutting unit 520 which solves such a problem to some extent, for example, the feed cutter 6 shown in FIG.
There is. In FIG. 14, the upper cutter 522 is fixed to the arm 528, and the lower cutter 523 is fixed to the disk 524. The feed rollers 529a and 529b rotate at a constant speed and feed the strip-shaped metal plate 10 in the direction of arrow (A) shown in the drawing. The disk 524 is rotated in the direction of arrow B shown in the figure by a motor (not shown), and the arm 528 is caused to reciprocate as shown by arrow C in the figure.

The rotation of the disk 524 and the reciprocating movement of the arm 528 are caused by the edge of the upper cutter 522 and the lower cutter 523.
Is driven so as to intersect with the edge of the workpiece 10. As a result, the same effect as temporarily stopping the feeding of the strip-shaped metal plate 10 can be obtained. Therefore, it is possible to cut the strip-shaped metal plate 10 by the upper cutter 522 and the lower cutter 523 without stopping the feeding once.

[0011]

When the above-mentioned feed cutter is used, the leveler side and the cutter side operate independently of each other, so that the movement speeds of the work, the upper cutter and the lower cutter are completely synchronized. Therefore, there is a problem that the work cannot be cut with an accurate length. Therefore, it is necessary to adjust the feed rate to synchronize the work with the upper cutter and the lower cutter. Further, it is necessary to provide a bend between the uncoiler and the leveler as in the rotary cutter and the Renzo Kukan type cutter, and the problem that an additional installation area for the automatic coil cutting machine is required remains. In addition, it is desirable to increase the shear angle of the upper cutter and the lower cutter to improve the cutting performance of the work, especially to prevent the return when cutting the strip-shaped metal plate. There was a problem that the shear angle could not be increased because the synchronization of could not be achieved completely.

The present invention has been made in view of the above-mentioned problems of the prior art. Since the feed speeds of the work and the cutter can be perfectly synchronized, the work is continuously fed without being stopped. It is possible to cut the workpiece, and it is possible to keep the feed rate of the work constant. Therefore, it is possible to cut the work at high speed, and the deflection between the uncoiler and the leveler is also possible. To provide an automatic work cutting device capable of increasing the shear angle for preventing the return when cutting the strip-shaped metal plate, because the unnecessary installation area of the automatic coil cutting machine is unnecessary because it is not necessary to provide the coil. With the goal.

[0013]

In order to achieve the above object, an automatic work cutting device of the present invention is provided so as to oppose a feeding mechanism for continuously feeding a continuous work, and cooperates with the feeding mechanism of the work. A cutting mechanism having a pair of cutting members provided so as to cut the work in a direction orthogonal to the feed direction, at least one cutting member partially moving together with the work, and the one cutting member. It has a cutting mechanism and a drive mechanism which engages the other cutting member while sandwiching the work and cuts the work.

Further, the cutting mechanism and the cutting mechanism / driving mechanism operate in synchronization with each other.

Further, the one cutting member is configured so as to mesh with the other cutting member at a predetermined cutting angle.

Further, the cutting mechanism / driving mechanism includes a motor, a rotating member eccentrically connected to a rotating shaft of the motor, and a crank shaft connected to the rotating member. The cam is operated according to the rotation of the motor, and the workpiece and the one cutting member are moved up and down to be meshed with the other cutting member.

Further, it is characterized by further comprising control means for controlling a motor in the cutting mechanism / driving mechanism in association with the feed speed of the feed means.

Further, the continuous work is a strip-shaped work, and a mechanism is provided just before the feeding mechanism, which has a mechanism for rewinding and flattening the strip-shaped work to guide it to the feeding mechanism.

[0019]

[Operation] The upper and lower blades used for cutting the work are reciprocally moved in the front-rear direction (lateral direction) at the same speed, and the upper blade is moved up and down so as to cut the work near the midpoint of the reciprocating motion. Cutting of any workpiece by configuring the upper blade drive mechanism, the roller with cam groove and the reciprocating motion transmission arm of the table so that the vertical movement of the upper blade and the forward and backward movement are in a proportional relationship when cutting the workpiece. A uniform cutting quality is obtained even in the long length. Further, by synchronizing the feed speed of the work with the movement speed of the upper blade and the like in the front-rear direction, it is possible to cut the work while continuously feeding the work, and to further increase the shear angle.

[0020]

Embodiments of the automatic work cutting device according to the present invention will be described below. FIG. 1 is a diagram showing a perspective view of a configuration of an automatic work cutting device 1 of the present invention. In FIG.
Parts that are not directly related to the present invention, such as a member that fixes the arm 122 or a member that holds the upper blade 21, are omitted. FIG. 2 is a sectional view of a cutting portion of the automatic work cutting device 1 shown in FIG.

1 and 2, the power transmission mechanism 1
Reference numeral 1 denotes a timing pulley, a timing belt, and the like. The rotation of the cutting motor 16 is controlled by the shaft 14, the upper blade driving mechanisms 12a and 12b, and the cam grooved roller 1.
Transmit to 3rd grade.

The upper blade drive mechanism 12 has a pair of left and right upper blade drive mechanisms 12a and 12b, and these drive mechanisms are fixed at positions displaced (eccentric) from the center of the shaft 14 at the large end of the crankshaft. Disks 121a, 121b
And rotatably fitted into the disks 121a and 121b,
Arms 122a, 12 movably held in the housing 20 by holding members (not shown) so as to be vertically movable and laterally movable.
2b, the rotation of the shaft 14 is converted into vertical movement, which is transmitted to the upper blade 21 via the crankshaft small ends 123a and 123b.

FIG. 3 is a diagram showing the structure of the upper blade drive mechanisms 12a and 12b. The upper blade drive mechanism 12 is fixed to the shaft 14 at a portion deviated from the center point shown in the drawing, and the arms 122a and 122b are respectively discs 121a and 121b.
It is fixed to slide around. Therefore, by being properly held, the arms 122a and 122b can be connected to the shaft 1.
The rotation of 4 causes vertical movement.

The cam grooved roller 13 has a disk shape fixed to the shaft 14 at its center, and has a reciprocating cam groove 131. A cam groove tracing member 152 provided at the tip of a reciprocating motion transmitting arm 151 provided on the table 15 is fitted into the reciprocating cam groove 131 so as to trace the inside of the reciprocating cam groove 131. The rotation of the cam grooved roller 13 is converted into the movement of the table 15 in the front-rear direction.

The table 15 carries the strip-shaped metal plate 10 and reciprocates in the front-rear direction. Since the upper blade guide 23, which guides the upper blade 21 in the vertical direction, is fixed to the table 15, the upper blade drive mechanism 12 and the table 15 move at the same speed in the front-rear direction. Further, since both use the same motor (cutting motor 16) as the power source, it is possible to completely synchronize the vertical movement and the front-back movement. The cutting motor (CM) 16 is controlled by the NC controller 32 and supplies power for cutting the work.

The upper blade 21 includes crankshaft small end portions 123a, 12 on the upper blade guide 23 and arms 122a, 122b.
It is held via 3b and moves in the same direction and speed as the table 15 and cooperates with the lower blade 22 to cut the strip-shaped metal plate (workpiece) 10. The lower blade 22 is the table 15
The belt-shaped metal plate 10 is fixed in place and is cut in cooperation with the upper blade 21.

The upper blade guide 23 is fixed to the table 15, and guides the upper blade 21 so as to move up and down in the direction orthogonal to the strip-shaped metal plate 10. The feed rollers 24a and 24b guide the strip-shaped metal plate 10 toward the upper blade 21, the lower blade 22, and the like.
An LM (linear motor) guide 25 mounts the table 15 so that it can freely reciprocate in the front-rear direction.

The feed motor (FM) 30 is controlled by the NC controller 32 and supplies power for rotating the feed roller 24. The encoders 31 and 33 detect the rotational positions (rotational angles) of the cutting motor 16 and the feed motor 30, respectively, and convert them into electrical signals, which are then NC.
Input to the controller 32. NC controller 3
2 controls the entire automatic work cutting device 1. In addition,
1 and 2, the integrated device 51, the leveler 53, and the uncoiler 54 shown in FIG. 11 as a conventional example are omitted.

FIG. 9 is a diagram showing the configuration of the NC controller 32. In FIG. 9, the CPU bus 321 is C
It is a bus for transmitting and receiving data such as the PU 322 and the ROM 323. The CPU 322 executes the program stored in the ROM 323, and inputs the cutting motor 16 and the feed motor 3 from the encoders 31 and 33.
0 rotation speed information is processed, and the cutting motor drive circuit (CMD) 326 and the feed motor drive circuit 32 are further processed.
Cutting motor 16 and feed motor 30
Control the rotation of.

The ROM 323 stores a program executed by the CPU 322 and a ROM table referred to in the processing of the cutting motor 16 and the feed motor 30. Here, the ROM table stores control information of the cutting motor 16 and the feed motor 30 for the cutting length data in a fixed array. The data stored in the ROM table is obtained by calculation in advance or experimentally, and the automatic work cutting device 1 is optimally operated for each cutting length. The cutting motor 16 and the feed motor 30
It is not necessary to determine the number of rotations of the ROM table,
For example, the cutting length data may be calculated each time it is input.

The RAM 324 is the NC controller 32.
Stores various data used for processing in. The I / O device 325 is connected to a keyboard, a CRT display (neither is shown), etc., and the automatic work cutting device 1
Input and output information that controls the.

The cutting motor drive circuit 326 is a CPU.
The rotation speed of the feed motor 30 is controlled by controlling the power supply voltage and the current supplied to the cutting motor 16 based on the control information set by 322.
The rotation speed information of the cutting motor 16 from the encoder 31 is input to the CPU 322. Feed motor drive circuit 3
Reference numeral 27 controls the rotation speed of the feed motor 30 by controlling the power supply voltage and current supplied to the feed motor 30 based on the control information set by the CPU 322, and the cutting motor 1 from the encoder 33.
The rotation angle information of No. 6 is input to the CPU 322.

The operation of the automatic work cutting device 1 will be described below. The strip-shaped metal plate 10 sent in the direction of the upper blade 21, the lower blade 22, etc. by the feed rollers 24a, 24b is placed on the table 15, guided between the upper blade 21 and the lower blade 22, and cut.

Now, the vertical reciprocating motion of the upper blade 21 and the longitudinal reciprocating motion of the table 15 will be described. FIG. 4 shows the upper blade 2 by the upper blade drive mechanisms 12a and 12b.
It is a figure explaining the reciprocating motion of 1 up and down. Figure 5
It is a figure explaining the back-and-forth reciprocating motion of the table 15 by the roller 13 with a cam groove.

FIG. 4 shows the case where the upper blade drive mechanisms 12a, 12b are in the positions of the rotation angles 0 °, 90 °, 180 °, and 270 °. Disk 121 centered on the shaft 14
When a and 121b rotate, arm 122a,
122b and the crankshaft small ends 123a and 123b move up and down and are guided by the upper blade guide 23 to reciprocate the upper blade 21 in the vertical direction.

In FIG. 5, (A) shows the reciprocating cam groove 131 when the reciprocating cam groove 131 has a rotation angle of 0 °.
31 and the position of the table 15 are shown. (B)
Shows the positions of the reciprocating cam groove 131 and the table 15 when the reciprocating cam groove 131 has a rotation angle of 90 °. (C) shows the positions of the reciprocating cam groove 131 and the table 15 when the reciprocating cam groove 131 has a rotation angle of 180 °. (D) shows the positions of the reciprocating cam groove 131 and the table 15 when the reciprocating cam groove 131 has a rotation angle of 270 °.

As shown in FIG. 5, the roller 1 with a cam groove is provided.
3, the cam groove tracing member 152 traces the reciprocating cam groove 131 to reciprocate the table 15 in the front-rear direction.

The upper blade 21 is mounted on the table 1 as described above.
Since it is guided by the upper blade guide 23 fixed to 5 and moves up and down, the movement speed and direction of the table 15 and the upper blade 21 in the front-rear direction are the same. That is, the relative positional relationship between the lower blade 22 and the upper blade 21 fixed to the table 15 in the front-rear direction does not always change.

The relationship between the vertical reciprocating motion of the upper blade 21 and the longitudinal reciprocating motion of the table 15 will be described. FIG. 6 is a diagram showing a synchronization range of the upper blade 21 and the disks 121a and 121b. FIG. 7 is a graph showing the relationship between the position of the upper blade 21 and the rotation angle of the cam grooved roller 13 (the position of the table 15).

In FIG. 7, the vertical axis of the graph represents the position of the upper blade 21, and the horizontal axis represents the rotation angle of the cam grooved roller 13. Since the rotation angle of the cam grooved roller 13 and the position of the table 15 have a correspondence relationship, the position of the table 15 can be expressed by the rotation angle of the cam grooved roller 13.

As shown in FIG. 6, the upper blade 21 has a disc 12
The upper position shown in (C) of FIG.
Between the intermediate position shown and the lower position shown in (E),
That is, it moves during the entire stroke shown in FIG. Here, the relationship between the position of the table 15 in the front-rear movement and the position of the upper blade 21 changes as shown in FIG. 7, but at the synchronization angle indicated by the thick line in FIG.
The position of 1 and the position of the table 15 in the front-back movement are substantially proportional.

For the reasons described above, the range of movement of the arms 122a and 122b used for cutting the strip-shaped metal plate 10 shown in FIG.
The upper blade drive mechanism 12 is configured so that the synchronization angles shown in are coincident with each other. Further, the cam grooved roller 13 and the cam groove tracing member 152 are configured such that the position in the reciprocating motion of the table 15 in the front-rear direction becomes the center thereof in the vicinity of the rotation angle 90 ° shown in the drawing. With such a configuration, the strip-shaped metal plate 10 can be cut in a range in which the movements of the upper blade 21 and the table 15 are most synchronized, and a good result can be obtained.

With reference to FIG. 8, the effect of the above structure will be described. FIG. 8 is a graph showing the relationship between the cutting length and the position of the upper blade 21 when the feeding speed of the strip-shaped metal plate 10 is constant. When the feeding speed of the belt-shaped metal plate 10 is constant and the rotation of the cutting motor 16 is accelerated, the cutting length of the belt-shaped metal plate 10 is shortened, and conversely, when the rotation of the cutting motor 16 is slowed, the belt-shaped metal plate 10 is cut. The cutting length of 10 becomes long.

In FIG. 8, the vertical axis of the graph is table 1
5 (the rotation angle of the cam grooved roller 13), and the horizontal axis is the cut length of the strip-shaped metal plate 10. The curve shown in (A) is a curve showing the position of the upper blade 21 when the cutting length of the strip-shaped metal plate 10 is shorter than the distance (L) at which the table 15 is fed by the reciprocating cam groove 131 (L / 2). Is. The curve shown in (B) is a curve showing the position of the upper blade 21 when the cutting length of the strip-shaped metal plate 10 is equal to the distance (L) at which the table 15 is fed by the reciprocating cam groove 131.

The curve (C) shows the position of the upper blade 21 (2L) when the cut length of the strip-shaped metal plate 10 is longer than the distance (L) at which the table 15 is fed by the reciprocating cam groove 131 (2L). It is a curve. The dotted straight lines attached to the curves (A) to (C) are the positions of the table 15 and the upper blade 21 when the cam grooved roller 13 having the same feed length as the cut length is used at the corresponding cut lengths. Shows the relationship. The range indicated by (D) indicates the above synchronization range.

In the synchronizing range in the graph shown in FIG. 8, all the curves (A) to (C) are substantially straight lines, and intersect the dotted line attached to each curve at the descending end. This means that even if the cutting length is changed, that is, when the rotation of the cutting motor 16 and the moving speed of the table 15 and the upper blade 21 are changed, the position of the upper blade 21 and the movement of the table 15 in the front-back direction. The positions at are almost proportional to each other, and it is possible to obtain good results for cutting the strip-shaped metal plate 10.

Further, in order to satisfactorily cut the strip-shaped metal plate 10, it is necessary to match the feed speed of the strip-shaped metal plate 10 with the forward moving speed of the upper blade 21 and the table 15. That is, in order to set the cutting length arbitrarily and continuously cut the strip-shaped metal plate 10, the rotation speed of the cutting motor 16 and the rotation speed of the feed motor 30 are adjusted (synchronized), and the upper blade 21 The strip-shaped metal plate 10 is fed by a desired length in one cycle of the vertical reciprocating motion of the strip-shaped metal plate 1.
The feed speed of 0 and the moving speed of the upper blade 21 and the table 15 in the front direction need to be the same.

For this purpose, the rotation speeds of the cutting motor 16 and the feed motor 30 are adjusted by the NC controller 32, and the moving speed of the table 15 (lower blade 22) at least forward and the feeding speed of the strip-shaped metal plate 10 are adjusted. Must be the same.

The control operation of the cutting motor 16 and the feed motor 30 by the NC controller 32 will be described below. The cut length data of the strip-shaped metal plate 10 input to the NC controller 32 through the I / O device 325 by a keyboard or the like is stored in the RAM 324 by the CPU 322.
Memorized in.

The CPU 322 refers to the ROM table in the ROM 323 on the basis of this cutting length data, and the cutting motor drive circuit 326 and the feed motor drive circuit 3
Cutting motor 16 and feed motor 3 via 27
0 is controlled and its rotation speed is determined. Further CPU3
22 performs feedback control based on the rotation speeds of the cutting motor 16 and the feed motor 30 detected by the encoders 31 and 33, and controls both motors to rotate at the respective rotation speeds determined as described above. I do.

By configuring the automatic work cutting device 1 as described above, it becomes possible to always obtain the optimum cutting quality at any cutting length of the strip-shaped metal plate 10. Further, by using the NC controller 32, it becomes easier to synchronize the feed speeds as compared with the case where a clutch brake is used. Further, since the feed speed of the strip-shaped metal plate 10 and the feed speed of the upper blade 21 are equal at the time of cutting, the same conditions as when cutting the strip-shaped metal plate 10 in a stationary state are obtained. Therefore, the shear angle can be increased as in the case of cutting a stationary work.

FIG. 10 is a diagram for explaining the shear angle of the upper blade 21. As shown in FIG. 10 (A), the upper blade 21 is arranged in a direction orthogonal to the longitudinal direction of the strip-shaped metal plate 10, and the shear angle of the upper blade 21 is defined as shown in FIG. 10 (B). Angle. By increasing the shear angle, it is possible to reduce the return of the cut surface of the work.

In the automatic work cutting device 1 of this embodiment, the shear angle of the upper blade 21 shown in FIG.
For example, it can be set to about 3 °. Therefore, it is possible to prevent the return of the cut surface, which tends to occur when the strip-shaped metal plate 10 is cut.

Although the upper blade 21 is vertically moved in the above-described embodiment, the lower blade 22 or both the upper blade 21 and the lower blade 22 may be vertically reciprocated. Good. Further, the rotation speeds of the cutting motor 16 and the feed motor 30 do not have to be constant during the operation of the automatic work cutting device 1. For example, the rotation speed of the feed motor 30 is increased during the feeding of a predetermined cutting length, and the upper blade 21
When cutting the work, control such as slowing down the feed speed of the work may be performed.

Further, a motor for driving the upper blade drive mechanism 12 and the motor for driving the cam grooved roller 13 may be separately provided, and the NC controller 32 may be configured to synchronize the rotational speeds of these two motors and the feed motor 30. Good. Further, the work 10 is not limited to the strip-shaped metal plate described in the embodiment, but may be a continuous work such as a metal rod.
The material of the work is not limited to metal, and may be paper or the like. In addition to the above-described embodiments, the automatic work cutting device 1 can have various configurations, such as the configuration of the modification described in the embodiments. The embodiments described above are merely examples.

[0056]

As described above, according to the present invention, since the feed speeds of the work and the cutter can be completely synchronized, the work can be continuously cut without stopping the feed. In addition, it is possible to keep the work feed rate constant, so that the work can be cut at high speed, and there is no need to give a bend between the uncoiler and the leveler. It is possible to provide an automatic work cutting device that does not require an unnecessary installation area of a cutting machine and can increase a shear angle for preventing a return when cutting a band-shaped metal plate.

[Brief description of drawings]

FIG. 1 is a diagram showing a perspective view of a configuration of an automatic work cutting device according to the present invention.

FIG. 2 is a cross-sectional view of a cutting portion of the automatic work cutting device shown in FIG.

FIG. 3 is a diagram showing a configuration of an upper blade drive mechanism.

FIG. 4 is a diagram for explaining the reciprocating movement of the upper blade in the vertical direction by the upper blade driving mechanism.

FIG. 5 is a diagram for explaining reciprocating motion of the table in the front-rear direction by a roller with a cam groove.

FIG. 6 is a diagram showing a synchronization range of an upper blade and a disc.

FIG. 7 is a graph showing the relationship between the position of the upper blade and the rotation angle of the cam grooved roller.

FIG. 8 is a graph showing the relationship between the cutting length and the position of the upper blade when the feeding speed of the strip-shaped metal plate is constant.

FIG. 9 is a diagram showing a configuration of an NC controller.

FIG. 10 is a diagram illustrating a shear angle of an upper blade.

FIG. 11 is a diagram showing a configuration of a conventional automatic coil cutting machine.

FIG. 12 is a cross-sectional view showing the structure of a rotary cutter.

FIG. 13 is a diagram showing a configuration of a Renzo Kukan type cutter.

FIG. 14 is a diagram showing a configuration of a feed cutter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Automatic work cutting device 10 ... Band metal plate 11 ... Power transmission mechanism 12 ... Upper blade drive mechanism 121 ... Disk 122 ... Arm 123 ... Crankshaft small end 13・ ・ ・ Roller with cam groove 131 ・ ・ ・ Cam groove for reciprocating motion 14 ・ ・ ・ Shaft 15 ・ ・ ・ Table 151 ・ ・ ・ Reciprocating motion transmitting arm 16 ・ ・ ・ Cutting motor 21 ・ ・ ・ Upper blade 22 ・ ・・ Lower blade 23 ・ ・ ・ Upper blade guide 24 ・ ・ ・ Feeding roller 25 ・ ・ ・ LM guide 30 ・ ・ ・ Feeding motor 31 ・ ・ ・ Encoder 32 ・ ・ ・ NC controller 33 ・ ・ ・ Encoder

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Miji Hara Aichi prefecture Kasugai city, Kibuchi-cho, Ichibanchi, Chubu Seiki Co., Ltd. 72) Inventor Kunio Ishihara 3-134-1, Shimoyama-cho, Mizuho-ku, Nagoya, Aichi Prefecture Ishihara Iron Works

Claims (6)

[Claims] 1. A pair of feed mechanisms, which are provided in opposition to a feeding mechanism for continuously feeding a continuous work, and which are provided so as to cooperate with each other to cut the work in a direction orthogonal to the feed direction of the work. A cutting mechanism having a cutting member, at least one of which is moved partially synchronously with the work, and the one cutting member and the other cutting member are engaged with each other with the work sandwiched therebetween to cut the work. Automatic work cutting device with cutting mechanism and drive mechanism. 2. The automatic work cutting device according to claim 1, wherein the cutting mechanism and the cutting mechanism / driving mechanism operate in synchronization with each other. 3. The automatic work cutting device according to claim 1, wherein the one cutting member is configured to mesh with the other cutting member at a predetermined cutting angle. 4. The cutting mechanism / driving mechanism includes a motor, a rotating member eccentrically connected to a rotating shaft of the motor, and a crankshaft connected to the rotating member. The automatic work cutting according to claim 2 or 3, wherein a cam operation is performed according to rotation of the motor, and the work and the one cutting member are moved up and down to be meshed with the other cutting member. apparatus. 5. The automatic apparatus according to claim 1, further comprising control means for controlling a motor in the cutting mechanism / driving mechanism in association with a feeding speed of the feeding means. Work cutting device. 6. The continuous work is a band-shaped work, and has a mechanism for rewinding and flattening the band-shaped work to guide it to the feeding mechanism immediately before the feeding mechanism. The automatic work cutting device according to any one of the above.