JP2915378B2 - Plate surface cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat plate surface cutting apparatus suitable for flat cutting a flat plate having a large shape and a large cutting area.

[0002]

2. Description of the Related Art When cutting a flat plate having a large cutting area and a different shape, it is necessary to suppress the traveling loss of the cutter. For this reason, conventionally, for example, Japanese Patent Publication No. 1-2460
A cutting device such as that disclosed in Japanese Patent Application Publication No. 1 (1994) has been proposed.

[0003] The cutter in this cutting device has a rotating shaft disposed in parallel with the cutting surface, has a cutting edge on the outer peripheral surface, and moves in the horizontal direction to cut the surface of the flat plate. Also,
By detecting the flat plate with the sensing switch, the cutter is controlled so as not to move largely away from the flat plate.

[0004]

However, in the former cutting device, it is necessary to rotate the cutter so that the flat plate is pressed against the traveling direction to perform cutting. In other words, this cutter can only cut wood when it is moved in one direction. For this reason, it is necessary to cope by reciprocating the cutter in the same range, and the cutting efficiency is poor. In particular, when the flat plate has a shape that protrudes largely in the direction of travel of the cutter, this problem becomes significant.

Accordingly, an object of the present invention is to provide a flat plate surface cutting apparatus capable of efficiently cutting even a flat plate having a large surface area and an irregular shape.

[0006]

According to the present invention, as a means for achieving the above object, there is provided a flat plate surface cutting device provided with a cutter having a rotary cutting blade in the same plane, and movably provided with the cutter. An uncut surface detecting unit that detects an uncut surface of a flat plate, a driving unit that moves the cutter and the uncut surface detecting unit at least in a horizontal plane, and the driving based on a detection signal from the uncut surface detecting unit. By controlling the driving of the means, the cutter is moved while maintaining a state of protruding a predetermined dimension along the edge of the uncut surface of the flat plate, and the cutter is cut as long as the uncut surface is detected by the uncut surface detection means. And control means for continuing the process.

[0007] According to the flat plate surface cutting apparatus having the above-described configuration, the control means controls the driving means when the non-cut surface detecting means detects the non-cut surface of the flat plate, and causes the cutter to move to a predetermined position from the non-cut surface edge of the flat plate. By cutting the trajectory so that it does not separate more than the dimension, cutting is continued until all the uncut surfaces have been cut while moving the cutter.

[0008]

When the cutter is rotated so that an outer peripheral surface adjacent to the flat plate on the side of the cutter in the portion protruding from the flat plate faces the flat plate, there is no fear that the edge of the flat plate is chipped. preferable.

A plurality of cutters may be provided so as to have a rotary cutting surface in the same horizontal plane.

The uncut surface detecting means comprises a plurality of sensors disposed on the outer periphery of the cutter and having a sensitivity capable of detecting only an uncut surface of a flat plate during cutting by the cutter. The moving direction of the cutter may be stored in advance for each sensor, and the cutter may be sequentially moved in the direction determined by the sensor closest to the edge on the moving direction side of the cutter among the sensors for detecting the flat plate.

In this case, the moving direction to be set is a direction inclined at a predetermined angle clockwise when the edge of the flat plate is moved clockwise with respect to a straight line extending from the center of rotation of the cutter. In the case of moving in the clockwise direction, the direction is a direction inclined at a predetermined angle in the counterclockwise direction.
Further, the inclination angle is set so that a straight line corresponding to the direction is inside a predetermined dimension from the outer periphery of the cutter. This is because, when the sensor detects the flat plate, the cutter is moved in the set direction, so that the cutter protrudes from the edge of the surface of the flat plate by a predetermined dimension.

According to this configuration, since the flat plate surface is sequentially cut from the outer edge side, the cutter always moves so as to cut the flat plate after the start of cutting, so that there is no useless movement. Therefore, efficient cutting work is possible.

Further, if the sensor for detecting the flat plate is set to have a sensitivity capable of detecting only the surface on which the cutting is not completed (uncut surface), the cutting can be performed over the entire edge of the flat plate. At the end of the process, if an uncut portion remains on the flat plate, the cutter can be moved along the newly formed edge, and the entire flat plate can be cut efficiently without waste.

However, even if the sensor does not have such sensitivity, if the moving path of the cutter is stored, the moving direction can be corrected so that the entire surface can be cut from the moving path and the cutting range by the cutter. It is possible.

[0016]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 are a front view and a side view of a flat plate surface cutting device according to the present invention. The flat plate surface cutting device includes a base 1, a movable table 2 reciprocally movable on the base 1, a cutter member 3 reciprocally movable in a direction orthogonal to the moving direction of the movable table 2, and It comprises a circular saw member 4 having a circular saw 4a for cutting a flat plate W to a predetermined size, and a control device 5 (see FIG. 3).

Rails 6a and 6b are provided on both sides of the base 1, respectively. The upper surface of one rail 6a is flat, and the other rail 6b is mountain-shaped in cross section. A flat plate W is placed on the upper surface of the central portion.

The movable base 2 has a gate shape and includes side walls 7a and 7b located on both sides of the base 1, and a guide rail 8 connecting the upper portions of the side walls 7a and 7b.

A pair of running wheels 9a,
9a, a running wheel drive motor 10a, a cutter member drive motor 11a and the like are provided. Also, the side wall portion 7b
Are provided with a pair of traveling wheels 9b, 9b, a traveling wheel drive motor 10b, a circular saw member drive motor 11b, and the like.

The traveling wheels 9a and 9b are rotatably disposed at lower front and rear positions, respectively. Running wheel 9
A groove 9c is formed on the outer periphery of b. This groove 9c
Is engaged with the mountain-shaped portion of the rail 6b. Also, the distance between the traveling wheels 9b, 9b is
It is wider than the interval 9a. Thereby, the displacement of the movable base 2 is effectively prevented.

The traveling wheel drive motors 10a, 10b
Are fixed to the upper rear surfaces of the side walls 7a and 7b, respectively. Traveling wheel drive motor 10a and traveling wheel 9
A chain 13a is wound around the rotation shafts a and 9a via an auxiliary roller 12. In addition, the running wheel drive motor 10b and the rotating shafts of the running wheels 9b, 9b have
A chain 13b is stretched. Then, the chain 13 is driven by the driving of the traveling wheel drive motors 10a and 10b.
a, 13b, both running wheels 9a, 9a, 9b, 9
b rotate in synchronization with each other, and the movable table 2 reciprocates in the YY 'direction on each of the rails 6a and 6b provided on both sides of the base 1.

The cutter member drive motor 11a is fixed on the upper surface of the side wall portion 7a, and the circular saw member drive motor 11b is fixed on the upper surface of the side wall portion 7b. The cutter member drive motor 11a is used for moving the cutter member 3 described later, and the circular saw member drive motor 11b is
Used for traveling.

The guide rail portion 8 includes two guide portions 14a and 14b arranged in parallel at a predetermined interval, and two guide portions 14a and 14b.
14b, two feed screw shafts 15a and 15b
And A chain 16a is stretched between the feed screw shaft 15a and the rotation shaft of the cutter member drive motor 11a. Further, a chain 16b is stretched between the feed screw shaft 15b and the rotation shaft of the circular saw member drive motor 11b.

The cutter member 3 includes a cutter portion 17, a first
It comprises a holding part 18 and a second holding part 19.

The cutter section 17 includes a motor 20, a cutter 21, and sensors 22 (22a to 22h). The motor 20 has a rotation axis 20a orthogonal to a horizontal plane. The cutter 21 is provided at the lower end of the rotating shaft 20 a, has a cutting blade on the lower surface, and is covered by a hood 23. Motor 2
When 0 is driven, the cutting blade of the cutter 21 rotates in the same horizontal plane. As shown in FIG. 5, the sensors 22a to 22h are provided at eight locations on the outer periphery of the hood 23. The sensors 22a to 22h have a sensitivity capable of detecting only an uncut portion of the flat plate W when the flat plate W is cut by the cutter 21. The sensor 22 is not limited to the non-contact type, but may be a contact type (for example, a limit switch).

The first holding section 18 holds the cutter section 17 and is attached to the second holding section 19 so as to be vertically movable. A geared motor 24 is disposed above the second holding unit 19 and moves the cutter 21 up and down via the first holding unit 18. A guide receiving portion 25 is provided on the back surface of the second holding portion 19.
a, 25b and a nut 26a protrude. The guide portions 14a and 14b of the guide rail portion 8 are slidably engaged with the guide receiving portions 25a and 25b, respectively. The feed screw shaft 15a is screwed into the nut 26a. Thus, when the cutter member driving motor 11a is driven, the feed screw shaft 15a rotates via the chain 16a, and the second holding portion 19, the first holding portion 18, and the cutter portion 17 are integrally formed via the nut portion 26a. Reciprocates in the XX ′ direction along the guide rail portion 8.

The circular saw member 4 has a first holding portion 27 and a second holding portion 28, like the cutter portion 17.
The second holding portion 28 has a guide receiving portion (not shown) with which each of the guide portions 14a and 14b is slidably engaged. In addition, it has a nut portion 26b with which the feed screw shaft 15b is screwed. Then, the driving motor 11 for the circular saw member
b, the feed screw shaft 1 is driven through the chain 16b.
5b is rotated, and the second holding portion 2 is rotated via the nut portion 26b.
8, the first holding portion 27 and the circular saw 4a integrally reciprocate in the XX 'direction along the guide rail portion 8.

As shown in FIG. 3, the control device 5 receives detection signals from the sensors 22 (22a to 22h), and drives the traveling wheel drive motors 10a and 10b, the cutter member drive motor 11a, and the circular saw member drive motor. 11b, Output a control signal to the geared motor 24.

In the memory of the control device 5, each sensor 22a
The moving direction of the cutter 21 is stored in advance for every ~ 22h. As shown in FIG. 5, this moving direction extends a predetermined angle in a clockwise direction with respect to a linear direction (indicated by a one-dot chain line in FIG. 5) extending from the rotation center of the cutter 21 and passing through the sensors 22a to 22h. This is the direction inclined by α. In addition, the inclination angle α is an angle at which a straight line matching the direction is inside a predetermined dimension from the outer periphery of the cutter 21. This is because when the flat plate W is detected by the sensor 22 and the flat plate W is cut while moving the cutter in the set direction, the cutter 21 is moved by a predetermined dimension x from the edge of the flat plate W indicated by a two-dot chain line in FIG. This is to protrude. In the present embodiment, in order to move the cutter 21 in the clockwise direction along the edge of the flat plate W, the moving direction is inclined in the clockwise direction. However, the cutter 21 is moved in the reverse direction (counterclockwise). Direction), it is necessary to incline in the opposite direction (counterclockwise direction).

Next, the operation of the flat plate surface cutting device having the above-described configuration will be described with reference to the flowchart of FIG.

First, the cutting data of the thickness and the cutting dimension of the unprocessed flat plate W placed on the base 1 is read (step S).
1). Then, the cutter 21 is lowered to the cutting position by driving the geared motor 24 based on the cutting data (step S2). The cutting position is a position lowered from the surface of the flat plate W by a cutting dimension.

The rotation of the cutter 21 is started by driving the motor 20 (step S3). Furthermore, the movement of the cutter 21 is started by driving the traveling wheel drive motors 10a and 10b and the cutter member drive motor 11a (step S4). In the present embodiment, the moving direction of the cutter 21 is such that the outer edge of the flat plate W is clockwise, and the rotating direction is toward the flat plate W on the moving direction side. Thereby, edge sagging of the flat plate W is prevented, and good cutting can be performed.

Since the sensor 22 is provided on the hood 23 located around the cutter 21, the sensor 22 can detect the presence or absence of the flat plate W in a predetermined area beyond the range where the cutter 21 can cut. Therefore, if any of the sensors 22a to 22h detects the flat plate W (step S5), the cutter 21 moves in the set direction for each of the detected sensors 22a to 22h.
Is moved (step S6).

More specifically, as shown in FIG. 6, when the cutter 21 is moved rightward (X'-axis direction) from the position A, the sensors 22a and 22b and then the sensors 22c and 22c are moved.
2h detects the flat plate W. Thus, the plurality of sensors 2
When 2 detects the flat plate W at the same time, the cutter 21 is moved in the direction set corresponding to the sensor 22 for detecting the flat plate W in the most counterclockwise direction. Here, first, the sensors 22a and 22b detect the flat plate W.
6 which is the direction corresponding to 2b, and then the sensors 22a to 22c and 22h detect the flat plate W. Therefore, the moving direction is changed to the upper right direction in FIG. 5 which is the direction corresponding to the sensor 22c. , And the sensors 22a to 22d,
Since 22h and 22g detect the flat plate W, the sensor 22d
The moving direction is changed to the upward direction in FIG. Thereafter, the sensors 22c and 22d stop detecting the flat plate W, and the sensor 22b detects the flat plate W in the most counterclockwise direction. Therefore, the moving direction is changed to the right in FIG. If the moving direction determined by the sensor 22 does not match the direction of the edge of the flat plate W, one of the two sensors 22, for example, one of the two directions determined by the sensors 22a and 22b is selected at the edge a. And cutter 2
1 moves meandering.

Thereafter, when the cutter 21 moves in the same manner over the entire edge of the flat plate W, the sensor 22 detects an uncut portion of the flat plate W, and the moving route is sequentially corrected inward. Thereafter, when the detection signal from the sensor 22 disappears (step S7), the cutting operation is terminated.

However, even if the sensitivity of the sensor 22 is not adjusted as described above, the moving locus of the cutter 21 is stored, and it is determined from the moving locus whether or not there is any uncut portion on the flat plate. Is also good. For example, it is possible to determine whether there is any remaining cutting from the movement locus and the radius of the cutter 21 between the opposing edges.

In the above-described embodiment, the flat plate W is detected by the sensors 22a to 22h provided at eight positions, but the number is not limited. Of course, the sensor 2 to be provided
As the number 2 increases, the accuracy of the movement of the cutter 21 increases, and it is possible to move the flat plate W of various shapes without waste.

In the above embodiment, only one cutter 21 is provided. However, if two or more cutters 21 are provided, the cutting efficiency can be further increased.

[0040]

As is apparent from the above description, according to the flat plate surface cutting apparatus of the present invention, the control means drives the cutter to the flat plate cutting means by the driving means based on the detection signal of the uncut surface detecting means. Since the surface is moved along the edge of the cutting surface, the surface can be cut without waste, and work efficiency is high.

[Brief description of the drawings]

FIG. 1 is a front view of a flat plate surface cutting device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a block diagram of a flat plate surface cutting device according to the present invention.

FIG. 4 is a flowchart showing drive control of the flat plate surface cutting device according to the present invention.

FIG. 5 is a schematic diagram showing a positional relationship and a moving direction between a cutter and a sensor in FIG. 1;

FIG. 6 is a schematic explanatory view showing the operation of the cutter member of FIG.

[Explanation of symbols]

 5 Control device (control means) 10a, 10b Running wheel drive motor 11a Cutter member drive motor 11b Circular saw member drive motor 21 Cutter 22 (22a to 22h) Sensor (flat plate detection means) W Flat plate

Claims (3)

(57) [Claims] 1. A cutter having a rotary cutting blade in the same plane, an uncut surface detecting means movably provided with the cutter and detecting an uncut surface of a flat plate, and the cutter and the uncut surface detecting means. A driving unit that moves at least in a horizontal plane; and a drive unit that controls the driving unit based on a detection signal from the uncut surface detection unit, so that the cutter has a predetermined dimension along an uncut surface edge of a flat plate. A flat surface cutting apparatus comprising: a control unit that moves the protruding portion while maintaining the protruding state, and continues cutting as long as the non-cut surface is detected by the non-cut surface detection unit. 2. The flat plate according to claim 1, wherein the cutter is rotated so that an outer peripheral surface adjacent to the flat plate on the cutter traveling direction side of the portion protruding from the flat plate faces the flat plate. Surface cutting equipment. 3. The uncut surface detecting means is provided on an outer periphery of a cutter, and includes a plurality of sensors having a sensitivity capable of detecting only an uncut surface of a flat plate during cutting by the cutter. The moving direction of the cutter is stored in advance for each of the sensors, and the cutter is sequentially moved in a direction determined by a sensor closest to the edge on the moving direction side of the cutter among the sensors for detecting the flat plate. Item 3. The flat plate surface cutting device according to item 1 or 2.