JPH07276292A - Cutter - Google Patents

Abstract

PURPOSE:To freely cut the second dimension plane of a work such as a sheet material by actuating a cutter by means of a simple mechanism. CONSTITUTION:The cutter is equipped with a base stand 13; a cutter 8 to cut a work on the base stand 13; a cutter head 3 to support the cutter 8; and a guide mechanism 16 to move the cutter 8 lengthwise and crosswise on the surface of the work on the base stand 13. A cutter support portion 1b to support the cutter head 3 rotatably around a rotary center line L1 through a bearing 11 is equipped between the cutter head 3 and the guide mechanism 16, and a guide roller member 10 is provided at the cutter head 3. A compression coil spring 9b to energize the guide roller member 10 at all times toward the work on the base stand 13 is equipped between the guide roller member 10 and the cutter head 3, and a perpendicular line L2 passing the center of the guide roller member 10 and the rotary center line L1 of the cutter head 3 are made to be separated from each other at a predetermined interval.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device, and more particularly to a cutting device suitable for cutting a two-dimensional plane of a workpiece such as a sheet material.

[0002]

2. Description of the Related Art Conventionally, as a cutting device for cutting a sheet material or the like, those disclosed in, for example, JP-A-1-146693, JP-A-1-14697, and JP-A-3-264300 have been proposed. ing. FIG. 6 shows an example of a conventional configuration of a cutting device, which includes a base 51 having a cutting surface 50, guide rails 52 and 53 arranged on both sides of the base 51, and a guide rail 52 and 53. A guide mechanism 54 which is passed along and is movable in the X direction by an X-direction drive motor (not shown) via the guide rails 52 and 53, and a Y-direction drive motor (shown in the figure) which is attached to the guide mechanism 54. A cutter head 55 which is movable in the Y direction in the figure by means of (not shown), and a cutter 56 which is attached to the lower end portion of the cutter head 55 and is rotatable in the θ direction by means of a θ direction drive motor (not shown). It is composed.

When cutting the sheet material 57 placed on the cutting surface 50 of the base 51 of the cutting device, it is possible to simultaneously control the three axes of the X-direction driving motor, the Y-direction driving motor and the θ-direction driving motor. A controller (not shown) drives and controls the X-direction driving motor, the Y-direction driving motor, and the θ-direction driving motor, appropriately moves the guide mechanism 54 in the X direction, and appropriately moves the cutter head 55 in the Y direction. Then, the sheet material 57 is cut by appropriately rotating the cutter 56 in the θ direction. In this case, the controller
In order to perform free cutting including a curved line on the surface of the sheet material 57, the blade edge 56a of the cutter 56 is always controlled to face the cutting direction (traveling direction).

[0004]

However, in the conventional cutting device, the cutting edge of the cutter is always oriented in the cutting direction (advancing direction) in order to perform free cutting including a curved line on the surface of the sheet material as described above. In order to control
X to move the cutter in the X, Y and θ directions
Since a controller capable of simultaneously driving and controlling the direction driving motor, the Y direction driving motor, the θ direction driving motor, and each motor is required, the control by the controller becomes complicated and the cost increases. It was

[0005]

It is an object of the present invention to improve the disadvantages of the above conventional example, and in particular, it is possible to freely cut a two-dimensional plane of a workpiece such as a sheet material by operating the cutter with a simple mechanism. The purpose is to provide a cutting device.

[0006]

According to the present invention of claim 1, there is provided a base on which a workpiece such as a sheet material is placed, a cutting blade for cutting the workpiece on the base, and the cutting blade. A cutting edge supporting means for supporting the blade on the upper side, a guide mechanism for guiding the cutting edge to move vertically and horizontally on the surface of the workpiece on the base via the cutting edge supporting means, and the guide A driving mechanism for driving the mechanism, and between the cutting blade supporting means and the guide mechanism, the cutting blade supporting means is rotatable about a vertical line passing through a contact point between the cutting blade and the workpiece. And a spherical roller member via an arm member to the cutting blade supporting means, and the roller member of the base is provided between the roller member and the arm member. Equipped with a biasing means for constantly biasing the upper surface, and a contact point between the roller member and the workpiece. Between a rotation center line of the perpendicular line and the cutting edge support means through, it adopts a configuration that causes the given intervals. This aims to achieve the above-mentioned object.

According to a second aspect of the present invention, a base on which a workpiece such as a sheet material is placed, a cutting blade for cutting the workpiece on the base, and the cutting blade are supported by an upper portion. Cutting blade support means, a guide mechanism that guides the cutting blade to move vertically and horizontally on the surface of the workpiece on the base via the cutting blade support means, and a drive mechanism that drives the guide mechanism. And a supporting mechanism for rotatably supporting the cutting blade supporting means around a vertical line passing through the cutting blade supporting means, between the cutting blade supporting means and the guide mechanism, and the cutting blade. The vertical line passing through the contact point between the workpiece and the workpiece and the rotation center line of the cutting blade supporting means are separated from each other by a predetermined distance. This aims to achieve the above-mentioned object.

The present invention according to claim 3 is the same as claim 1 or 2 above.
In the cutting device described above, the cutting blade supporting means is provided with an elevating mechanism for moving the cutting blade supporting means in the vertical direction with respect to the upper surface of the base. This aims to achieve the above-mentioned object.

[0009]

According to the present invention of claim 1, after the work piece such as the sheet material is placed on the upper surface of the base, the cutting edge supported by the cutting edge supporting means is brought into contact with the cutting position of the work piece. Let At this time, the roller member mounted on the cutting edge support means via the arm member is in contact with the workpiece on the base by the biasing force of the biasing means mounted between the roller member and the arm member. Has become. When the cutting blade supporting means is appropriately moved in parallel with the surface of the workpiece by the drive mechanism via the guide mechanism and the supporting mechanism, the perpendicular line passing through the contact point between the roller member and the workpiece and the cutting blade supporting means. Since it is set to be separated from the center line of rotation by a predetermined distance, the roller member follows the movement of the cutting edge support means and rotates along the surface of the workpiece,
A rotating moment acts on the cutting edge. As a result, the cutting blade supported by the cutting blade supporting means moves on the surface of the workpiece while being guided by the roller member, and cuts the workpiece.

According to the second aspect of the present invention, after the work piece such as a sheet material is placed on the upper surface of the base, the cutting edge supported by the cutting edge supporting means is brought into contact with the cutting position of the work piece. Let When the drive mechanism appropriately moves the cutting edge support means in parallel to the surface of the workpiece through the guide mechanism and the support mechanism, the perpendicular line passing through the contact point between the cutting edge and the workpiece and the cutting edge support means. Since the center of rotation is set to be separated from the center line of rotation by a predetermined distance, a rotational moment acts on the cutting edge as the cutting edge support means rotates. As a result, the cutting blade supported by the cutting blade supporting means moves on the surface of the workpiece and cuts the workpiece.

According to the third aspect of the present invention, when the cutting blade is moved to the cutting target portion of the workpiece, the lifting mechanism raises the cutting blade supporting means above the base and the urging means. The blade supporting means and the blade are idled above the workpiece through the roller member that is in contact with the workpiece on the base by the urging force of The mechanism lowers the cutting edge support means to bring the cutting edge supported by the cutting edge support means into contact with the cutting location of the workpiece.
When the cutting blade supporting means is appropriately moved in parallel with the surface of the workpiece by the drive mechanism via the guide mechanism and the supporting mechanism, the perpendicular line passing through the contact point between the roller member and the workpiece and the cutting blade supporting means. Since the roller member is set to be separated from the rotation center line by a predetermined distance, the roller member follows the movement of the cutting edge support means and rotates along the surface of the workpiece, resulting in a rotation moment on the cutting edge. Works. As a result, the cutting blade supported by the cutting blade supporting means moves on the surface of the workpiece while being guided by the roller member, and cuts the workpiece.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First embodiment to which the cutting device of the present invention is applied
An example and a second example will be described with reference to the drawings.

(1) First embodiment. First, the overall construction of the cutting device in the first embodiment is shown in FIG.
Describing on the basis of the above, the cutting device includes a base 13 on which a workpiece is placed, guide rails 14 and 15 arranged in parallel along both edges of the base 13, and guide rails 14 and 1.
The guide mechanism 16 hung between the five through the slide mechanisms 16a and 16b, and the cutter mounting portion 1 on the guide mechanism 16.
The ultrasonic cutter mechanism 1 equipped via a and the guide mechanism 16 are moved in the vertical direction of FIG. 2 along the guide rails 14 and 15, and the ultrasonic cutter mechanism 1 is illustrated along the guide mechanism 16. 2 Drive mechanism for moving horizontally 1
7 is provided.

Cutter 8 of ultrasonic type cutter mechanism 1 (described later)
When the workpiece W placed on the upper surface of the base 13 is cut by the drive mechanism 1 by the controller (not shown)
7 to drive the guide mechanism 16 to guide the guide rail 1
2, the work piece W is cut by moving the ultrasonic cutter mechanism 1 along the guide mechanism 16 in the horizontal direction of FIG. ing.

Next, the structure of the essential parts of the cutting device in the first embodiment will be described with reference to FIGS. 1 and 2. The ultrasonic cutter mechanism 1 constituting the cutting device has a cutter mounting portion 1a.
And a cutter support portion 1b connected to the cutter attachment portion 1a
A solenoid 2 fixed to the cutter support portion 1b, a cutter head 3 provided at the lower end of the plunger 2a of the solenoid 2, a pair of slip rings 4 and 5 attached to the cutter head 3, and a slip ring. Brushes 6 connected to the blades 4 and 5, a cutter 8 mounted on the lower end of the cutter head 3 via a horn portion 7, and a guide fixed to the cutter head 3 via an arm member 9 and a compression coil spring 9b. The roller member 10 is provided.

More specifically, the solenoid 2 is fixed to the upper portion of the cutter support portion 1b connected to the cutter attachment portion 1a, and the plunger 2a of the solenoid 2 is provided inside the cutter support portion 1b. It is equipped so as to be movable in the vertical direction in FIG. 1 via a bearing 11. When the solenoid 2 is energized from a predetermined power source (not shown), the plunger 2a moves up and down in FIG. 1, so that the cutter head 3 and the cutter 8 move up and down in FIG. In this case, the lifting mechanism for the cutter head 3 and the cutter 8 is not limited to the solenoid 2.

A cylindrical cutter head 3 is provided at the lower end of the plunger 2a of the solenoid 2, and the cutter head 3 is generated by an ultrasonic oscillator and an ultrasonic oscillator that generate ultrasonic vibrations. The cutter head body 12 has a built-in booster (not shown) that transmits ultrasonic vibrations to the cutter 8, and the horn 7 that transmits ultrasonic vibrations to the cutter 8.

Cutter head body 12 of the cutter head 3
A pair of slip rings 4 and 5 are fixed to the outer periphery of the upper portion of, and a predetermined power source (not shown) is connected to the slip rings 4 and 5 via a brush 6. When the slip rings 4 and 5 are energized from the power source through the brush 6, ultrasonic vibrations are generated in the ultrasonic vibrator of the cutter head main body 12, and the ultrasonic vibrations generated in the ultrasonic vibrator are booster and horn 7. It is adapted to be transmitted to the cutter 8 via.

Further, the cutter head body portion 12 is provided on the outer periphery of the lower portion of the cutter head body portion 12 of the cutter head 3.
The arm member 9 is fixed via a mounting portion 9a to which is fixed, and the lower end of the arm member 9 is rotatably equipped with a spherical guide roller member 10 via a compression coil spring 9b. The guide roller member 10 is constantly urged against the upper surface of the workpiece W on the base 13 by the compression coil spring 9b, and even when the cutter head 3 and the cutter 8 are moved upward by the solenoid 2, the guide roller member 10 is guided. Roller member 1
0 is an urging force of the compression coil spring 9b so that the contact state with the upper surface of the workpiece W is maintained. The interval between the perpendicular line L2 passing through the center of the guide roller member 10 and the rotation center line L1 of the cutter head 3 is set to a predetermined interval K1.

Further, the cutting edge 8a of the cutter 8 is set so as to always face the side opposite to the guide roller member 10, and the cutting edge 8a of the cutting edge 8a of the cutter 8 (contact point with the workpiece W). ) Is set on the extension line of the rotation center line L1 of the cutter head 3. The cutter head 3 provided with the cutter 8 is rotatable about the rotation center line L1 of the cutter head 3.

In this case, the cutting device described above is provided with a control unit (not shown) for controlling each part of the cutting device,
Based on a predetermined control program, the control unit controls the guide mechanism 16 to move vertically along the guide rails 14 and 15 in FIG.
2 control along the horizontal direction of FIG. 2, control for moving the cutter head 3 of the ultrasonic cutter mechanism 1 away from the workpiece on the base 13 and raising, cutter head 3 of the ultrasonic cutter mechanism 1. The control is performed so as to descend to a desired cutting position on the workpiece on the base 13.

Next, the operation of cutting the work piece by the cutting apparatus of the first embodiment having the above-described structure will be described.

When the workpiece W is cut by the cutting device, when the solenoid 2 is energized from a predetermined power source, the plunger 2a of the solenoid 2 moves downward, so that the cutter head 3 also moves downward, and the cutter head 3 moves. The tip portion 8b of the cutting edge 8a of the attached cutter 8 comes into contact with the processing surface of the workpiece W. When the tip end portion 8b of the blade edge 8a of the cutter 8 contacts the machining surface of the workpiece W, the power supply to the solenoid 2 is stopped. In this case, the blade edge 8a of the cutter 8 is in a state of facing the side opposite to the guide roller member 10.

Next, when the slip rings 4 and 5 are energized from a predetermined power source through the brush 6, ultrasonic vibration is generated in the ultrasonic vibrator of the cutter head main body 12 of the cutter head 8, and the ultrasonic vibration is booster. And is transmitted to the cutter 8 via the horn portion 7. The drive mechanism 17 is drive-controlled by a controller (not shown), the guide mechanism 16 is appropriately moved in the vertical direction of FIG. 2 along the guide rails 14 and 15, and the ultrasonic cutter mechanism 1 is moved along the guide mechanism 16. 2 When properly moved in the horizontal direction, the cutter 8 moves on the processing surface of the workpiece W.

At this time, the tip end portion 8b of the blade edge 8a of the cutter 8 moves on the machined surface of the workpiece W while being guided by the guide roller member 10 which rotates along with the movement of the cutter 8. The workpiece W is cut. in this case,
Even when the workpiece W is cut into a curved shape, the cutting edge 8 of the cutter 8
Since a is directed to the traveling direction while being guided by the guide roller member 10, the work W is smoothly cut.

On the other hand, when the corner portion of the workpiece W is cut by the cutting device, when the solenoid 2 is energized from a predetermined power source, the plunger 2a of the solenoid 2 moves upward, so that the cutter head 3 also moves upward. , Cutter head 3
A gap is created between the tip portion 8b of the blade edge 8a of the cutter 8 attached to the workpiece and the processing surface of the workpiece W. In this case, since the guide roller member 10 is biased against the upper surface of the workpiece W on the base 13 by the compression coil spring 9b, the guide roller member 10 maintains the contact state with the upper surface of the workpiece W. ing.

While the guide roller member 10 is in contact with the upper surface of the workpiece W, the cutter head 3 and the cutter 8 are idled above the machining surface of the workpiece W in a predetermined direction so that the cutting edge 8a of the cutter 8 moves. When the solenoid 2 is energized from a predetermined power source at the time of reaching the cutting position while facing the moving direction, the plunger 2a of the solenoid 2 moves downward, so that the cutter head 3 also moves downward and the blade tip 8a of the cutter 8 moves. The tip 8b of the cutting edge is brought into contact with the upper surface of the workpiece W. Cutter 8
When the tip end portion 8b of the blade tip 8a comes into contact with the upper surface of the workpiece W, the power supply to the solenoid 2 is stopped.

Next, when the slip rings 4 and 5 are energized from a predetermined power source through the brush 6, ultrasonic vibration is generated in the ultrasonic vibrator of the cutter head main body 12 of the cutter head 8, and the ultrasonic vibration is booster. And is transmitted to the cutter 8 via the horn portion 7. The drive mechanism 17 is drive-controlled by a controller (not shown), the guide mechanism 16 is appropriately moved in the vertical direction of FIG. 2 along the guide rails 14 and 15, and the ultrasonic cutter mechanism 1 is moved along the guide mechanism 16. When properly moved in the horizontal direction in FIG. 2, the cutter 8 moves to the cut portion of the workpiece W. As a result, the tip end portion 8b of the blade edge 8a of the cutter 8 is guided by the guide roller member 10 that follows the movement of the cutter 8 and cuts the corner portion of the workpiece W.

As described above, according to the first embodiment,
A cutter 8 is provided so that the cutting point of the workpiece is on the rotation center line of the cutter head 3, and a guide roller member 10 is provided at a position separated from the rotation center line by a predetermined distance. 9b has a structure in which the upper surface of the base 13 is constantly urged. Therefore, if the cutter 8 is appropriately moved on the surface of the work W on the base 13, the guide roller member in contact with the work W Due to the rotation moment acting on the cutter 8 with the rotation of 10, the cutter 8 can be freely moved on the surface of the workpiece W to perform cutting. This eliminates the need for a dedicated motor for rotating the cutting blade on the surface of the workpiece and a complicated control relating to the motor as in the conventional case, and the cost can be reduced by simplifying the mechanism and the control. .

Further, according to the first embodiment, since the solenoid 2 allows the cutter head 3 and the cutter 8 to move above the base 13, the solenoid 2 allows the cutter head 3 and the cutter 8 to move to the base. 13 and the cutter head 3 and the cutter 8 are idled above the workpiece through the guide roller member 10, and when the cutting position is reached, the solenoid 2 is used to move the cutter head 3 and the cutter 8 to the base. By lowering the work piece on the table 13 onto the surface of the work piece, it is possible to quickly perform the cutting work even when the cutting position of the work piece is separated from the current position of the cutter 8. You can also increase the degree of freedom.

Next, a modification of the first embodiment will be described. FIG. 3 shows a structure of a cutter mechanism of a cutting device in a modified example. The cutter mechanism is a cutter main body portion 21 mounted on a guide mechanism 30 attached to a base 29 having the same structure as that of the first embodiment. A solenoid 22 fixed to the cutter body 21, a cylindrical support member 23 mounted on the lower end of the plunger 22a of the solenoid 22,
A round blade 25 rotatably mounted on the lower end of the support member 23 via a mounting member 24, and the arm member 2 on the support member 23.
6 and a guide roller member 27 that is mounted via the guide roller member 6.

More specifically, the solenoid 2 is fixed to the upper portion of the cutter body 21, and the plunger 22a of the solenoid 22 is provided inside the cutter body 21.
Is inserted through a bearing 28 so as to be vertically movable in the figure. The lower end of the plunger 22a of the solenoid 22 is equipped with a support member 23, and the lower end of the support member 23 is provided with a round blade 25 with a mounting member 24 and a mounting shaft 24a.
It is mounted rotatably through. The lifting mechanism for the support member 23, the mounting member 24, and the round blade 25 is not limited to the solenoid 22.

A support member 23 having a round blade 25 attached thereto
Are rotatable about the rotation center line L3 of the support member 23. When the solenoid 22 is energized from a predetermined power source (not shown), the plunger 22a moves up and down in the figure, so that the support member 23 and the round blade 25 move up and down in the figure.

An arm member 26 is provided above the support member 23.
And a spherical guide roller member 27 is rotatably mounted on the lower end of the arm member 26 via a compression coil spring 26a. The guide roller member 27 is constantly urged against the upper surface of the workpiece W on the base 29 by the compression coil spring 26a, and even when the support member 23 and the round blade 25 are moved upward by the solenoid 22, The guide roller member 27 is kept in contact with the upper surface of the workpiece W by the biasing force of the compression coil spring 26a.

The distance between the perpendicular line L4 passing through the center of the guide roller member 27 and the rotation center line L3 of the support member 23 is set to a predetermined distance K2, and the work piece at the cutting edge 25a of the round blade 25 is processed. The contact point 25b with W is set to be located on the rotation center line L3 of the support member 23.

That is, according to the modified example, the circular blade 25 is provided so that the workpiece cutting point is located on the rotation center line of the support member 23, and the guide roller member is located at a position separated from the rotation center line by a predetermined distance. Since the guide roller member 27 is equipped with 27 and the guide coil member 27 is constantly urged to the upper surface of the base 29 by the compression coil spring 26a, the same effect as that of the first embodiment is obtained and the round blade 25 is used as a cutter. Because
The work piece can be cut smoothly.

(2) Second embodiment. The structure of the ultrasonic cutter mechanism of the cutting device according to the second embodiment will be described with reference to FIG. 4. The ultrasonic cutter mechanism of the cutting device has a base 3 having the same structure as that of the first embodiment.
Cutter main body part 3 equipped on a guide mechanism 39 attached to 8
1, and a support member 32 mounted on the cutter body 31,
Cutter head 33 fixed to the lower end of the support member 32
And a cutter 35 fixed to the lower end of the cutter head 33 via a horn portion 34.

More specifically, a rod-shaped support member 32 is mounted inside the cutter body 31 via a bearing 36 so as to be rotatable about the axis L5 of the support member 32. A cylindrical cutter head 3 is fixed to a lower end portion of the support member 32, and the cutter head 3 has the support member 32.
Of the support member 32 with the rotation of the support member 32 around the axis L5.
It is designed to rotate together with.

The cutter head 33 includes a cutter head body 37 having a built-in booster (not shown) for transmitting ultrasonic vibrations that generate ultrasonic vibrations and ultrasonic vibrations generated by the ultrasonic vibrators to the cutter 35. A horn portion 34 that transmits the ultrasonic vibration transmitted from the booster to the cutter 35 is provided.

The interval between the axis L5 of the support member 32 supported by the cutter body 31 and the axis L6 of the cutter head 33 is set to a predetermined interval K3, and the axis of the cutter 35 is set to the cutter head. It is set on an extension of the axis L6 of 33. Further, the tip end portion 35b (contact point with the workpiece W) of the blade edge 35a of the cutter 35 is set to be positioned on the axis L6 of the cutter head 33.
In this case, the structures of the guide mechanism, the drive mechanism, the guide rails, etc. of the first embodiment are the same as those of the first embodiment, and the illustration thereof is omitted.

Next, the operation of cutting the workpiece by the cutting device of the second embodiment having the above-described structure will be described.

When the workpiece W is cut by the cutting device, the control mechanism (not shown) drives and controls the drive mechanism to move the guide mechanism 39 along the guide rails, as in the first embodiment. Then, when the ultrasonic cutter mechanism is appropriately moved along the guide mechanism 39, the cutter 35 moves on the processing surface of the workpiece W.

At this time, the axis L6 of the cutter head 33 is
Since it is set to be separated from the axis L5 of the supporting member 32 supported by the cutter body 31 via the bearing 36 by a predetermined distance K3, a moment acts on the cutter head 33 as the supporting member 32 rotates. As a result, the cutter 35 cuts the workpiece W with the blade edge 35a thereof always directed in the traveling direction of the cutter head 33.

As described above, according to the second embodiment,
Since the axis L6 of the cutter head 33, which is fixed to the rotatable support member 32 through the bearing 36 in the cutter body 31, is separated from the axis L5 of the support member 32 by a predetermined distance, If the cutter 35 is appropriately moved on the surface of the workpiece W, the cutter 3 will move due to the rotation moment acting on the cutter 35 as the support member 32 rotates.
5 can be freely moved on the surface of the workpiece W to perform cutting. This eliminates the need for a dedicated motor for rotating the cutting blade on the surface of the work piece and the complicated control of the motor as in the prior art, and the cost can be reduced by simplifying the mechanism and control. it can.

Next, a modification of the second embodiment will be described. FIG. 5 shows the structure of the cutter mechanism of the cutting device in the modified example, and the cutter mechanism 41 is equipped with a guide mechanism 47 attached to a base 46 having the same structure as that of the first embodiment. And a supporting member 42 mounted on the cutter body 41, and a round blade 44 rotatably mounted on the lower end of the supporting member 42 via a mounting member 43.

More specifically, a rod-shaped support member 42 is mounted inside the cutter body 41 via a bearing 45 so as to be rotatable around the axis L7 of the support member 42. At the lower end of the support member 42, an L-shaped attachment member 43
Are fixed, and the mounting member 43 is equipped with a round blade 44 rotatably via a mounting shaft 43a.

Support member 4 supported by the cutter body 41
The distance between the axis L7 of 2 and the axis L8 of the mounting member 43 is set to a predetermined distance K4, and the contact point 44b of the cutting edge 44a of the round blade 44 with the processing surface of the workpiece W is
It is set in a state of being located on the axis L8 of the mounting member 43.

That is, according to the modification, the cutter body 41
Since the axis L8 of the mounting member 43 fixed to the rotatable support member 42 via the bearing 45 is separated from the axis L7 of the support member 42 by a predetermined distance, the same as in the first embodiment. In addition to having the effect, since the round blade 44 is used as a cutter, the workpiece can be cut smoothly.

Here, in the above-mentioned first and second embodiments, the case where the cutting device is equipped with the ultrasonic type cutter has been taken as an example, but the cutting device is not limited to the ultrasonic type cutter, and a usual cutter is used. It may be applied to cutlery.

Further, in the second embodiment and the modification of the second embodiment, as in the first embodiment and the modification of the first embodiment, the cutter head 3 is moved by an elevating mechanism such as a solenoid.
3 and the cutter 35 (the supporting member 42, the mounting member 43, and the round blade 44) can be moved up and down with respect to the upper surface of the base.

[0051]

As described above, according to the cutting device of the present invention as defined in claim 1, the cutting edge supporting means is rotatably arranged around the perpendicular passing through the contact point between the cutting edge and the workpiece. In addition, the cutting blade support means is equipped with a roller member via an arm member, and a biasing means for constantly biasing the roller member against the upper surface of the base is provided, and a contact point between the roller member and the workpiece is provided. Since the perpendicular line passing through and the center line of rotation of the cutting blade supporting means are separated by a predetermined distance, if the cutting blade supporting means is appropriately moved by the drive mechanism via the guide mechanism and the supporting mechanism, as described above. Since the perpendicular line passing through the contact point between the roller member and the work piece and the rotation center line of the cutting edge supporting means are separated by a predetermined distance, the roller contacting the work piece by the urging force of the urging means. As a result of the rotation moment acting on the cutting edge as the member rotates, While guiding with the roller member, it is possible to move freely on the surface of the work piece on the base to perform cutting, thereby rotating the cutting edge on the surface of the work piece as in the past. There is an effect that a dedicated motor and complicated control related to the motor are not required, and cost can be reduced by simplifying a mechanism and control.

According to the cutting device of the present invention as defined in claim 2, the cutting blade supporting means is rotatably arranged around the vertical line passing through the cutting blade supporting means, and the contact point between the cutting blade and the workpiece is provided. Since the vertical line passing through and the center line of rotation of the cutting edge support means are separated by a predetermined distance, if the cutting edge support means is appropriately moved by the drive mechanism via the guide mechanism and the support mechanism, As described above, since the vertical line passing through the contact point between the cutting edge and the workpiece and the rotation center line of the cutting edge supporting means are separated by a predetermined distance, the rotation moment of the cutting edge is increased as the cutting edge supporting means rotates. As a result, the cutting edge can be freely moved on the surface of the workpiece on the base to perform cutting,
This eliminates the need for a dedicated motor for rotating the cutting blade on the surface of the work piece and the complicated control of the motor as in the conventional case, and the cost can be reduced by simplifying the mechanism and control. There is an effect that it can.

According to the cutting device of the third aspect of the present invention, since the cutting blade supporting means is vertically movable with respect to the upper surface of the base by the elevating mechanism, for example, the current position of the cutting blade and the cutting target portion , The cutting blade supporting means is raised above the base by the elevating mechanism, and the cutting blade supporting means and the cutting blade are idled above the workpiece through the roller member to be cut. When the cutting blade support means is lowered by the elevating mechanism at the time of reaching the position and the cutting blade is brought into contact with the surface of the workpiece, the cutting position of the workpiece is separated from the current position of the cutting blade. However, the cutting work can be performed quickly, and the degree of freedom of the cutting work can be increased.

[Brief description of drawings]

FIG. 1 is an explanatory view with a partial cross section showing a configuration of a main part of a cutting device according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a schematic configuration of an entire cutting device in the first embodiment.

FIG. 3 is an explanatory view with a partial cross section showing a configuration of a main part of a cutting device according to a modification of the second embodiment.

FIG. 4 is an explanatory view, partly in section, showing the configuration of the main part of the cutting device in the second embodiment.

FIG. 5 is an explanatory view with a partial cross section showing a configuration of a main part of a cutting device according to a modification of the second embodiment.

FIG. 6 is a perspective view with a part omitted showing a schematic configuration of an entire cutting device in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ultrasonic type cutter mechanism 1a Cutter support part as a support mechanism 2,22 Solenoid as a lifting mechanism 3 Cutter head as a cutting edge support means 8,35 Cutter as a cutting edge 8a, 25a, 35a, 44a Blade edge 9,26 Arm member 9b, 26a Compression coil spring as urging means 10, 27 Guide roller member as roller member 11, 28, 36, 45 Bearing as support mechanism 13 Base 16, 30, 39, 47 Guide mechanism 17 Drive mechanism 21 , 31, 41 Cutter main body portion as a support mechanism 23, 42 Support member as a cutting blade support means 25, 44 Round blade as a cutter 32 Support member as a cutting blade support means W Workpiece

Claims (3)

[Claims] 1. A base on which a work piece such as a sheet material is placed, a cutting edge for cutting the work piece on the base, and a cutting edge support means for supporting the cutting edge at an upper portion, A guide mechanism that guides the cutting blade to move vertically and horizontally on the surface of the workpiece on the base via the cutting blade support means; and a drive mechanism that drives the guide mechanism. Between the blade supporting means and the guide mechanism, the cutting blade supporting means is equipped with a supporting mechanism that rotatably supports the cutting blade supporting means around a vertical line passing through a contact point between the cutting blade and the workpiece, and the cutting mechanism. The blade supporting means is equipped with a spherical roller member via an arm member, and a biasing means for constantly biasing the roller member against the upper surface of the base is provided between the roller member and the arm member. The rotation of the cutting edge support means and the vertical line passing through the contact point between the roller member and the workpiece Between the core and characterized by comprising by given intervals cutting device. 2. A base on which a workpiece such as a sheet material is placed, a cutting blade for cutting the workpiece on the base, and a cutting blade supporting means for supporting the cutting blade on the upper portion. A guide mechanism that guides the cutting blade to move vertically and horizontally on the surface of the workpiece on the base via the cutting blade support means; and a drive mechanism that drives the guide mechanism. Between the blade supporting means and the guide mechanism, the cutting blade supporting means is equipped with a supporting mechanism that is rotatably supported around a vertical line passing through the cutting blade supporting means, and the cutting blade and the workpiece. The cutting device is characterized in that a perpendicular line passing through the contact point and the rotation center line of the cutting blade supporting means are separated by a predetermined distance. 3. The cutting device according to claim 1 or 2, wherein the cutting blade supporting means is equipped with an elevating mechanism for vertically moving the cutting blade supporting means with respect to an upper surface of the base. A cutting device characterized by the above.