JP2009291901A - Cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide technology for well cutting a cutting material independently of the type of the cutting material while preventing the deformation or roughness of the cut surface. <P>SOLUTION: This cutting device comprises a first cylinder 10 for operating a movable pin 10a along a fist direction to abut on an outer periphery 12a of a movable blade 12 having a die hole 32 which shears a cutting material inserted thereinto, a second cylinder 28 for operating a movable pin 28a along a second direction different from the first direction to abut on the outer periphery 12a of the movable blade 12, and a third cylinder 30 for operating a movable pin 30a along a third direction different from each of the first and second directions to abut on the outer periphery 12a of the movable blade 12. The first cylinder 10, the second cylinder 28 and the third cylinder 30 are controlled with a phase difference corresponding to a mutual position relationship. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cutting device that shears material by a fixed blade and a movable blade.

  Patent Document 1 describes a cutting device that includes a fixed blade having a die hole for inserting a material to be cut and a movable blade, and cuts the material with the fixed blade and the movable blade. In this apparatus, the movable blade is reciprocated along one direction perpendicular to the central axis of the die hole. In the technique of Patent Document 1, the moving speed of the movable blade is maximized by operating the cylinder at a high speed, and the cutting material is cut by the collision energy generated thereby.

JP 2008-6520 A

The technique of patent document 1 suppresses generation | occurrence | production of a deformation | transformation, roughening, etc. of the end surface of the cutting material after a cutting | disconnection by maximizing the collision energy added to a cutting material at the time of a cutting | disconnection. However, when the cutting material is a metal having a high rigidity or a bar having a large diameter, the energy required for cutting also increases. Depending on the type and size of the cutting material, there is a possibility that it cannot be cut well.
The present invention provides a technology capable of preventing the occurrence of deformation and roughening of the cut surface and cutting the cutting material satisfactorily regardless of the type of cutting material.

  The cutting device according to the present invention has a fixed blade and a movable blade having a die hole for shearing an inserted cutting material, a movable portion that comes into contact with the outer edge of the movable blade, and moves the movable portion forward and backward in the first direction. A first actuator to be moved, a movable portion that contacts the outer edge of the movable blade, a second actuator that moves the movable portion forward and backward in a second direction different from the first direction, and a movable portion that contacts the outer edge of the movable blade And a controller for controlling the operations of the first actuator, the second actuator, and the third actuator, and a third actuator for moving the movable portion forward and backward in a third direction different from the first direction and the second direction.

  The first actuator, the second actuator, and the third actuator are in contact with the movable blade by the movable portion. Each actuator moves the movable blade by moving the respective movable parts forward and backward in different directions (first direction, second direction and third direction). That is, in this cutting device, the first actuator, the second actuator, and the third actuator operate the movable blade to shear the cutting material inserted into the fixed blade and the die hole of the movable blade. The direction in which the first actuator operates the movable blade, the direction in which the second actuator operates the movable blade, and the direction in which the third actuator operates the movable blade intersect. Therefore, by controlling the operation of each actuator by the controller, the shear direction for shearing the cutting material can be changed variously. For example, it is possible to first shear the cutting material along the first direction to an intermediate position, then shear the cutting material to the intermediate position along the second direction, and finally shear the cutting material along the third direction. it can. In this case, since the shear direction gathers in the center of the cutting material, the occurrence of flash or the like can be significantly suppressed. Furthermore, the amount of shearing once in each shearing direction can be made small, and the above-described change cycle in the shearing direction can be repeated. In this case, the occurrence of deformation or roughening of the cut surface is prevented, and a good cut surface can be obtained.

  In the above-described cutting device, the controller preferably controls each of the first actuator, the second actuator, and the third actuator with a phase difference corresponding to the positional relationship between them. In addition, the controller gives a phase difference equal to an angle formed by the first direction and the second direction during the operation of the first actuator and the second actuator, and the operation between the second actuator and the third actuator Giving a phase difference equal to the angle formed by the two directions and the third direction, and giving a phase difference equal to the angle formed by the third direction and the first direction between the operations of the third actuator and the first actuator; preferable.

  When each actuator is controlled as described above, the movable blade swirls around the center of the cutting material, and the movable blade cuts the cutting material from multiple directions. That is, the shear direction for shearing the cutting material is continuously changed. For this reason, even when the cutting material is a highly rigid material, the cutting surface of the cutting material is not deformed. Moreover, since it can cut many times from many directions, even if it is a case where the diameter of a cutting material is large, a cutting material can be sheared favorably.

In the above cutting apparatus, the first direction in which the first actuator causes the movable part to advance and retract, the second direction in which the second actuator advances and retracts the movable part, and the third direction in which the third actuator advances and retracts the movable part are provided. , Preferably at an angle of 120 degrees to each other.
In this case, it is preferable that the controller is operated by giving a phase difference equal to the angle (120 degrees) between the operations of the first actuator, the second actuator, and the third actuator. By the above control, the movable blade swirls so as to draw a vortex on a plane perpendicular to the central axis of the die hole. By the operation of the movable blade and the fixed blade, the cutting material inserted into the die hole can be cut well.

The cutting device includes a first urging unit that urges the movable blade along the first direction at a position facing the first actuator, and a movable blade along the second direction at a position facing the second actuator. Second biasing means for biasing and third biasing means for biasing the movable blade along the third direction at a position facing the third actuator may be further provided.
In this apparatus, biasing means is provided at a position facing each actuator on the outer edge of the movable blade. At the same time, in this cutting device, the movable blade is pressed against each actuator by the urging force of each urging means. Thereby, even when the operation direction of the actuator is reversed, for example, the operation adjustment of the movable blade by the actuator is accurately performed.

The cutting device preferably further includes a stopper member that comes into contact with the tip of the cutting material protruding from the die hole of the movable blade. More preferably, the stopper member is movable while maintaining a certain relative position with respect to the movable blade.
If the position of the stopper member that supports the tip of the cutting material is fixed, the stopper member and the cutting material may rub against each other during cutting, and the tip surface of the cutting material may be deformed or damaged. On the other hand, if the stopper member operates together with the movable blade, the stopper member and the cutting material do not rub against each other, so that the tip surface of the cutting material can be prevented from being deformed or damaged.

In the above-described cutting device, the stopper member is preferably supported by a movable blade.
If the stopper member is supported by the movable blade, the stopper member operates in the same manner by operating the movable blade, so that it is not necessary to separately provide an actuator or the like for interlocking the stopper member with the movable blade.

The above cutting device preferably further includes a fourth actuator that advances and retracts the stopper member along the central axis of the die hole.
According to this configuration, after the cutting of the cutting material is completed, the stopper member can be separated from the movable blade, and the cut material after cutting can be easily taken out from the die hole of the movable blade.

  According to the present invention, it is possible to prevent the cutting material from being deformed or roughened, and to cut the cutting material satisfactorily regardless of the type of the cutting material. Further, in the present invention, the cutting material is cut a plurality of times from multiple directions, so that noise during cutting can be reduced. According to the present invention, the worker's working environment can be improved.

The main features of the embodiments described below are listed.
(Feature 1) The first actuator, the second actuator, and the third actuator operate with a phase difference of 120 degrees.
(Feature 2) The first urging means operates the movable blade along the first direction, the second urging means operates the movable blade along the second direction, and the third urging means moves in the third direction. Move the movable blade along.
(Characteristic 3) The controller includes a storage unit that stores a program for determining and operating the operation amounts of various actuators, and an arithmetic unit that executes the program.
(Characteristic 4) The controller can control the positions of the first actuator, the second actuator, and the third actuator, and the position control of each actuator is performed by the amount of cutting material (cutting amount of cutting material) for each unit cycle of the operation of the actuator. ).

Embodiments of the present invention will be described with reference to the drawings. In FIG. 1, schematic structure of the cutting device 2 of a present Example is shown. The cutting device 2 includes a movable blade 12 and a fixed blade 14. A die hole 32 is formed in each of the movable blade 12 and the fixed blade 14. The cutting device 2 cuts the cutting material 20 inserted into the die hole 32 by operating the movable blade 12 with respect to the fixed blade 14. The cutting material 20 is inserted into the die hole 32 from the fixed blade 14 side by the pair of conveying rollers 18.
Between the conveyance roller 18 and the fixed blade 14, a support portion 24 that supports the cutting material 20 from below and a fixed cylinder 16 that is disposed above the support portion 24 are provided. The fixed cylinder 16 is provided with a movable pin 16a, and a contact portion 16b that is in contact with the cutting material 20 is provided at the tip of the movable pin 16a. The operation of the fixed cylinder 16 is controlled by the controller 4. While the cutting material 20 is sent out by the transport roller 18, the fixed cylinder 16 accommodates the movable pin 16a and retracts the contact portion 16b upward with respect to the cutting material 20 (see FIG. 1). On the other hand, while the cutting material 20 is cut by the movable blade 12 and the fixed blade 14, the fixed cylinder 16 projects the movable pin 16 a and presses the contact portion 16 b against the cutting material 20. Thereby, the position of the cutting material 20 is fixed. The conveyance mechanism of the cutting material 20 and the fixed blade 14 described above are supported by the support base 26.

  The movable blade 12 is operated by a plurality of hydraulic cylinders including the first cylinder 10 shown in FIG. The operation of these cylinders is controlled by the controller 4. The operation of the movable blade 12 will be described in detail later. A stopper cylinder 8 is fixed to the movable blade 12 by using a fixture 6 fixed to the outer edge portion of the movable blade 12. The stopper cylinder 8 moves in synchronization with the movable blade 12 while maintaining a certain relative position with respect to the movable blade 12. The stopper cylinder 8 includes a movable pin 8 a located on the central axis of the die hole 32. The stopper cylinder 8 advances and retracts the movable pin 8 a along the central axis of the die hole 32. The distal end portion of the movable pin 8 a is fed out by the conveying roller 18 and comes into contact with the distal end of the cutting material 20 protruding from the die hole 32 of the movable blade 12. Thereby, the cutting length which cuts the cutting material 20 is prescribed | regulated. Further, while the cutting material 20 is cut by the movable blade 12 and the fixed blade 14, the tip surface of the cutting material 20 is supported by the movable pin 8a. The operation of the stopper cylinder 8 is controlled by the controller 4. The operation of the stopper cylinder 8 will be described in detail later. The cutting device 2 further includes a discharge chute 22 for discharging the cut cutting material 20 below the movable blade 12.

  FIG. 2 shows a schematic configuration of the movable blade 12 and the cylinders 10, 28, and 30 that operate the movable blade 12. The first cylinder 10, the second cylinder 28, and the third cylinder 30 are arranged at equal positions along the outer peripheral surface 12 a of the movable blade 12. That is, the first cylinder 10, the second cylinder 28, and the third cylinder 30 are disposed at positions that are 120 degrees from each other about the central axis of the die hole 32. The first cylinder 10, the second cylinder 28, and the third cylinder 30 are respectively provided with movable pins 10 a, 28 a, 30 a, and the central axes of these movable pins 10 a, 28 a, 30 a are on the central axis of the die hole 32. Crossed. The movable pins 10a, 28a, 30a of the first cylinder 10, the second cylinder 28, and the third cylinder 30 are in contact with the outer peripheral surface 12a of the movable blade 12 so as to be separated from each other. In this device 2, each movable pin 10 a, 28 a, 30 a moves forward and backward by driving each cylinder 10, 28, 30. Each movable pin 10a, 28a, 30a presses the outer peripheral surface 12a of the movable blade 12, whereby the first cylinder 10, the second cylinder 28, and the third cylinder 30 operate the movable blade 12. In addition, arrangement | positioning of the 1st cylinder 10, the 2nd cylinder 28, and the 3rd cylinder 30 is not limited to an above-described positional relationship. For example, you may arrange | position in the position used as a relationship other than the above according to the hardness distribution, shape, etc. of a cutting material. Similarly, the formation angles of the cylinders 10, 28, and 30 and the positions where their central axes intersect may be arranged so as to have a relationship other than the above.

  The first cylinder 10, the second cylinder 28, and the third cylinder 30 are controlled by the controller 4. The first cylinder 10 moves the movable pin 10a forward and backward in the first direction, that is, along the central axis of the movable pin 10a, under the control of the controller 4. As a result, the first cylinder 10 moves the movable blade 12 along the first direction. Under the control of the controller 4, the second cylinder 28 moves the movable pin 28a forward and backward along the second direction, that is, along the central axis of the movable pin 28a. As a result, the second cylinder 28 moves the movable blade 12 along the third direction. The third cylinder 30 moves the movable pin 30a forward and backward in the third direction, that is, along the central axis of the movable pin 30a, under the control of the controller 4. Thus, the third cylinder 30 operates the movable blade 12 along the third direction.

  The controller 4 can control the positions at which the movable pins 10a, 28a, 30a of the cylinders 10, 28, 30 perform advance / retreat operations. This position control can be determined according to the cutting margin when cutting the cutting material. FIG. 7 is a diagram showing the operation of each cylinder 10, 28, 30. For example, when it is desired to perform cutting by gradually increasing the cutting margin, as shown in FIG. 7, the advance / retreat operation of each movable pin 10a, 28a, 30a immediately after the start of cutting is reduced by the control of the controller 4. In addition, it is possible to control the advance / retreat operation to increase continuously or stepwise.

Further, the controller 4 can control the operation of each cylinder 10, 28, 30 by giving a phase difference corresponding to the angle formed by each cylinder 10, 28, 30. The phase difference may be a phase difference equal to the angle formed by each cylinder 10, 28, 30. In the present embodiment, the first cylinder 10 operates the movable blade 12 in the first direction, the second cylinder 28 operates the movable blade 12 in the second direction, and the third cylinder 30 operates the movable blade 12 in the third direction. The directions are at an angle of 120 degrees to each other. From this, the controller 4 gives a phase difference of 120 degrees during the operations of the first cylinder 10, the second cylinder 28, and the third cylinder 30 as shown in FIG.
When the above control is executed, the movable pins 10a, 28a, 30a of the first cylinder 10, the second cylinder 28, and the third cylinder 30 have a phase difference of 120 degrees, and the first direction and the second direction. The forward / backward movement along the third direction is repeated. At this time, the position where the movable pins 10a, 28a, 30a and the outer peripheral surface 12a of the movable blade 12 abut changes. At the same time, the movable blade 12 pivots on a plane perpendicular to the central axis of the die hole 32. In FIG. 8, the operation of the movable blade 12 is represented by an arrow. The movable blade 12 moves in the direction of the outer edge of the die hole 32 while rotating, and as a result, the cutting material 20 inserted into the die hole 32 is cut in an annular shape from the outer peripheral portion toward the center. Note that, since the positional relationship among the first actuator 10, the second actuator 28, and the third actuator 30 is fixed, even when the positions of the movable pins 10a, 28a, and 30a that contact the movable blade 12 change. The relationship between the first direction, the second direction, and the third direction is constant.

  Next, the cutting processing operation of the cutting material 20 will be described based on the drawings showing the cutting steps of FIGS. When the cutting operation is started, first, the pair of conveying rollers 18 operates from the state shown in FIG. 1 to feed the cutting material 20 and insert it into the die hole 32 of the movable blade 12. At this time, the stopper cylinder 8 is driven and the movable pin 8 a protrudes in a direction approaching the movable blade 12. The position at which the movable pin 8a protrudes is controlled by the controller 4 according to the length of the cutting material 20 after cutting. The cutting material 20 that is inserted into the die hole 32 of the movable blade 12 and protrudes from the die hole 32 comes into contact with the tip of the movable pin 8 a of the stopper cylinder 8. This determines the cutting position. At the same time, the fixed cylinder 16 is driven, the contact portion 16b contacts the cutting material 20, and the cutting material 20 is fixed by the contact portion 16b and the support portion 24 (see FIG. 3).

As shown in FIG. 3, when the cutting material 20 is supported and fixed at both ends of the die holes 32, the first cylinder 10, the second cylinder 28, and the third cylinder 30 are driven as shown in FIG. Then, cutting of the cutting material 20 is started. As described above, the first cylinder 10, the second cylinder 28, and the third cylinder 30 are driven with a phase difference of 120 degrees by the controller 40 (see FIG. 7). Thereby, the movable blade 12 cuts the cutting material 20 while turning in a spiral shape (see FIG. 8). At this time, the movable pin 8 a of the stopper cylinder 8 also swirls like the movable blade 12. Therefore, the movable pin 8a of the stopper cylinder 8 and the cutting material 20 do not rub against each other.
The radius at which the movable blade 12 turns gradually increases, and when the center C of the die hole 32 moves in an amount corresponding to the radius r of the die hole 32 in the radial direction, the cutting material 20 is moved to the movable blade 12 and the fixed blade 14. Is completely sheared to complete the cutting. As shown in FIG. 5, after the cutting of the cutting material 20 is completed, the movable blade 12 is returned to the initial position.
In this embodiment, the cylinders 10, 28, 30 are positioned and controlled. However, the cylinders 10, 28, 30 may be controlled to operate with a single amplitude.

  When the cutting is completed, the stopper cylinder 8, the fixed cylinder 16, and the pair of transport rollers 18 are driven. Accordingly, the movable pin 8 a that has been in contact with the cutting material 20 is separated from the cutting material 20, and the cutting material 20 is sent out to the die hole 32 by the conveying roller 18. As shown in FIG. 6, the cut piece of the cut cutting material 20 is pushed out from the die hole 32 and discharged to the discharge chute 22. After the cut piece is discharged, the stopper cylinder 8 projects the movable pin 8a again. The conveyance roller 18 conveys the cutting material 20 until the tip of the cutting material 20 contacts the movable pin 8 a, and the cutting material 20 after conveyance is fixed again by the fixed cylinder 16. Thereby, it returns to the state shown in FIG. 3, and a new cutting process operation is started.

In the above cutting operation, the movable blade 12 swirls around the center of the cutting material 20 and cuts the cutting material 20 from multiple directions. For this reason, even when the cutting material 20 is a highly rigid material or when the cutting material has a large diameter, the cutting surface of the cutting material 20 is not deformed. Even if the cutting material 20 is hollow like a pipe, it can be cut well without deforming its cross section.
Furthermore, since the stopper cylinder 8 moves together with the movable blade 12, the stopper cylinder 8 and the cutting material 20 do not rub against each other, and thus the tip surface of the cutting material 20 is not damaged. According to said cutting device, the cutting process by a favorable cut surface can be performed.

  According to this cutting device 2, for example, it is possible to provide a high-quality product as compared with the case of cutting the cutting material 20 from one direction. For example, when cutting the cutting material 20 from one direction, the movable blade 12 must be moved by the diameter of the die hole 32. In addition, for example, when cutting a rod-shaped material, the cutting lengths at the center portion and both end portions of the cutting material 20 with respect to the cutting direction are different, and this often causes deformation of the cut surface.

On the other hand, according to the cutting apparatus 2 described above, the cutting material 20 can be cut by moving the movable blade 12 by the radius of the die hole 32 (see r in FIG. 8). Compared with the case of cutting, the load applied to the movable blade 12 can be kept small, and the consumption of the movable blade 12 can be reduced.
Moreover, in said cutting device 2, since it can cut | disconnect with the amount of cutting processes from each direction fixed, the non-uniformity of the length of the cutting material 20 with respect to a cutting direction does not arise. Further, the controller 4 controls the positions of the cylinders 10, 28, and 30, so that it is possible to set a cutting margin and a cutting method according to the shape, hardness, and the like of the cutting material 20.
Furthermore, according to said cutting device 2, since it can cut into the cutting material 20 many times from many directions, the noise at the time of a cutting | disconnection can be restrained small. For example, when cutting the cutting material 20 from one direction, the higher the rigidity of the cutting material 20 is, the more stress is required for cutting. As a result, noise at the time of cutting has to be increased, which has been a cause of worsening the worker's working environment. The above-described cutting device 2 can prevent the occurrence of such a bad cause. According to said cutting device 2, a worker's working environment can be improved.

(Application example of cutting device 2)
FIG. 9 shows an application example of the cutting device 2. In this application example, in addition to the first cylinder 10, the second cylinder 28, and the third cylinder 30, the first auxiliary cylinder 36, the second auxiliary cylinder 38, and the third auxiliary cylinder are provided on the outer peripheral surface 12 a of the movable blade 12. 34 is further provided. The first auxiliary cylinder 36 contacts the outer peripheral surface 12 a of the movable blade 12 at a position facing the first cylinder 10. The second auxiliary cylinder 38 contacts the outer peripheral surface 12 a of the movable blade 12 at a position facing the second cylinder 28. The third auxiliary cylinder 34 contacts the outer peripheral surface 12 a of the movable blade 12 at a position facing the third cylinder 30. The first auxiliary cylinder 36, the second auxiliary cylinder 38, and the third auxiliary cylinder 34 are controlled by the controller 4 in conjunction with the first cylinder 10, the second cylinder 28, and the third cylinder 30, respectively. The first auxiliary cylinder 36 operates the movable blade 12 in the direction opposite to the first cylinder 10 along the first direction. The second auxiliary cylinder 38 operates the movable blade 12 in the direction opposite to the second cylinder 28 along the second direction. The third auxiliary cylinder 34 operates the movable blade 12 in the direction opposite to the third cylinder 30 along the third direction.
When the auxiliary cylinders 36, 38, 34 are used, force is applied not only in the forward path but also in the backward path with respect to the operation of the movable blade 12 in each direction. For this reason, cutting time can be shortened.

Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.
For example, in the above-described embodiments, the stopper member is fixed to the movable blade, but the stopper member may be provided with a moving mechanism for moving the stopper member while maintaining a certain relative position with respect to the movable blade.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

It is a figure showing schematic structure of a cutting device. It is a front view of a movable blade. It is a figure (1) showing one process of a cutting | disconnection operation | movement. It is a figure (2) showing one process of a cutting | disconnection operation | movement. It is a figure (3) showing one process of a cutting | disconnection operation | movement. It is a figure (4) showing one process of a cutting | disconnection operation | movement. It is a figure showing the advance / retreat operation | movement of a 1st-3rd cylinder. It is a figure explaining the direction which a movable blade moves. It is a figure showing the example of application of a cutting device.

Explanation of symbols

2: Cutting device 4: Controller 6: Fixing tool 8: Stopper cylinder 8a, 10a, 16a, 28a, 30a: Movable pin 10: First cylinder 12: Movable blade 12a: Outer peripheral surface 14: Fixed blade 16: Fixed cylinder 16b: Contact part 18: Conveying roller 20: Cutting material 22: Discharge chute 24: Support part 26: Support base 28: Second cylinder 30: Third cylinder 32: Die hole 34: Third auxiliary cylinder 36: First auxiliary cylinder 38: Second auxiliary cylinder

Claims (8)

A fixed blade and a movable blade having a die hole for shearing the inserted cutting material;
A first actuator that has a movable part that contacts the outer edge of the movable blade, and moves the movable part forward and backward in the first direction;
A second actuator that has a movable part that contacts the outer edge of the movable blade, and moves the movable part in a second direction different from the first direction;
A third actuator that has a movable part that contacts the outer edge of the movable blade and moves the movable part forward and backward in a third direction different from the first direction and the second direction;
A controller for controlling operations of the first actuator, the second actuator, and the third actuator;
A cutting device comprising:   The cutting apparatus according to claim 1, wherein the controller controls each of the first actuator, the second actuator, and the third actuator with a phase difference corresponding to a mutual positional relationship.   The controller gives a phase difference equal to an angle formed by the first direction and the second direction between the operations of the first actuator and the second actuator, and the operations of the second actuator and the third actuator. A phase difference equal to an angle formed by the second direction and the third direction is provided between the third direction and the first direction between the operation of the third actuator and the first actuator. The cutting device according to claim 1, wherein a phase difference equal to an angle formed by is provided.   The cutting apparatus according to any one of claims 1 to 3, wherein the first direction, the second direction, and the third direction form an angle of 120 degrees with each other. First urging means for urging the movable blade along the first direction at a position facing the first actuator;
Second urging means for urging the movable blade along the second direction at a position facing the second actuator;
Third biasing means for biasing the movable blade along the third direction at a position facing the third actuator;
The cutting device according to any one of claims 1 to 4, further comprising: A stopper member that comes into contact with the tip of the cutting material protruding from the die hole of the movable blade;
The cutting device according to any one of claims 1 to 5, wherein the stopper member is movable while maintaining a certain relative position with respect to the movable blade.   The cutting device according to claim 6, wherein the stopper member is supported by the movable blade.   The cutting apparatus according to claim 6 or 7, further comprising a fourth actuator that advances and retracts the stopper member along a central axis of the die hole.

Images