JPH05200697A - Cutting pattern compensation method in cutting machine - Google Patents

Abstract

PURPOSE:To enable a cutting pattern so far set to a cutting machine to be corrected so simply even in the case where a cut work is mounted in a state of being shifted out of a regular position, at a time when this cut work is mounted on a cutting bed of the cutting machine laminatedly from a spreading part. CONSTITUTION:Such a cutting pattern as made up of making a cut work 6 being mounted on a cutting machine fully utilizable is stored in advance. A mark sensor installed in and around a cutter is shiftably operated in an X-axis or Y-axis direction and a mark 25 is set down to a data point, thereby detecting it plurally in respective axial directions, thus each tilt gamma deg. of the cut work in both X-axis and Y-axis directions is calculated. In succession, a zero position of the cut work is determined in calculating a point where two virtual extensions of these tilts of the cut work in the X-axis and Y-axis directions are crossed. The cutting pattern set to the cutting machine on the basis of the tilt of the cut work in the X-axis and Y-axis direction obtained like this and the zero position of the cut work is corrected and the work is cut by the cutter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine in which a material to be cut placed on a cutting support surface is cut into a desired shape by a cutter, and more particularly to a material to be cut placed on the cutting support surface. The present invention relates to a device in which a cutting pattern stored in a cutting machine is corrected according to the positional deviation of the cutting machine.

[0002]

2. Description of the Related Art Conventionally, a material to be cut such as a fabric or a knitted fabric laminated at a spreading portion is carried from the spreading portion onto a cutting support surface of a cutting machine, or on a cutting bed by a craftsman or the like. The materials to be cut are placed in a laminated form and cut here by a cutter or the like into a preset cutting pattern, but when they are carried from the stretched portion to the cutting support surface of the cutting machine, or the cutting support surface. When the materials to be cut are placed on top of each other in a stacked manner by a craftsman or the like, they are often placed and fixed in a state in which they are displaced from their proper positions.In such a case, the material to be cut is placed from the beginning. Either place them again or partially fix the large gaps before cutting.

However, much time and labor is required not only when the material to be cut is remounted from the beginning but also when only a large misalignment is partially repaired, which lowers the cutting efficiency. There was a problem that it would end up.

In order to solve such a problem, for example, as shown in Japanese Patent Publication No. 1-57185, a pattern or a striped pattern of laminated fabrics (cutting materials) supplied from a spreading portion to a cutting portion. The image input unit that reads the image and the stripe position of the image read and stored by the image input unit are detected, and the cutting unit is controlled so that the stripes at the stripe position match the input reference stripe position. It is known to cut.

[0005]

However, in the one described in the above publication, the device such as the image input device and the control device for controlling the cutting unit based on the input from this becomes complicated, and the initial cost and the running cost are increased. There is a problem that it will be expensive.

In addition, since the image input section reads the pattern or striped pattern of the cloth, there is a problem that the cloth is useless when the cloth is plain. The present invention has been proposed in view of the above problems, and when the material to be cut is carried from the spreading portion onto the cutting bed of the cutting machine or on the cutting bed by a craftsman or the like, the material to be cut is placed in a laminated state. It is an object of the present invention to make it possible to easily correct the cutting pattern set in the cutting machine even when the cutting pattern is placed in a state displaced from the regular position.

[0007]

In order to achieve the above object, a cutting pattern correction method in a cutting machine according to the present invention is first of all configured to cause the cutting machine to store a cutting pattern based on an origin position and to perform the cutting. A cutting machine configured to move a cutter in an X-axis direction and a Y-axis direction along a pattern to cut a material to be cut is provided with a mark sensor movable in the X-axis direction and the Y-axis direction. Is moved from the X-axis direction to the Y-axis direction to detect a plurality of marks formed on the edge portion of the material to be cut or in parallel therewith as data points, and at least 2 of the detected points are detected.
The inclination of the material to be cut with respect to the X-axis direction is calculated from the point data. On the other hand, move the mark sensor from the Y-axis direction to X
It is moved in the axial direction to detect a plurality of marks on the material to be cut as data points, and the inclination of the material to be cut with respect to the Y-axis direction is calculated from the data of at least two of the detected points. The origin position of the material to be cut is determined by calculating the intersection of the virtual extension line of the inclination of the material to be cut with respect to the X-axis direction and the virtual extension line of the inclination with respect to the Y-axis direction, and the origin position stored in the cutting machine is set. Corrected to match the origin position of the material to be cut and calculated X
It is characterized in that the cutting pattern stored in the cutting machine is corrected by using the inclination with respect to the axial direction or the inclination with respect to the Y-axis direction as a correction element.

Secondly, the cutting pattern is stored in the cutting machine with the origin position as a reference, and the cutter is moved in the X-axis direction and the Y-axis direction along the cutting pattern so as to cut the material to be cut. In the cutting machine described above, a mark sensor operable to move in the X-axis direction and the Y-axis direction is provided to
Move the mark sensor from one axis to the other axis to detect the edge of the material to be cut or the mark formed parallel to it as a data point, and after detecting the point, mark After changing the moving direction of the sensor from the other axial direction to one axial direction and moving it for a predetermined distance, the mark sensor is moved again to the other axial direction to detect the mark, and the detected mark or the mark is data. The inclination of the material to be cut with respect to the X-axis direction and / or the Y-axis direction of the material to be cut is calculated by using the data of a plurality of points obtained by repeating the operation of detecting the work point, and thus obtained. The inclination of the material to be cut with respect to the X-axis or Y-axis direction is used as a correction element to correct the cutting pattern stored in the cutting machine. .

Thirdly, the cutting pattern is stored in the cutting machine with reference to the origin position, and the cutter is moved along the cutting pattern in the X-axis direction and the Y-axis direction to cut the material to be cut. In the cutting machine, a mark sensor movable in the X-axis direction and the Y-axis direction is provided, and a mark formed parallel to the edge of the material to be cut is formed at or near the edge of the material to be cut. , When the mark sensor is moved by moving the mark sensor from one of the X-axis and the Y-axis to the other axis, and the mark is detected as a data point,
A point obtained by repeating the operation of changing the moving direction of the mark sensor to one axial direction and moving it for a predetermined distance, then moving the mark sensor again to the other axial direction and detecting the mark as a data point. Among these, the inclinations of the material to be cut with respect to the X-axis and Y-axis directions are calculated from the data of a plurality of points, and the intersections of the virtual extension lines of the inclinations with respect to the X-axis direction and the Y-axis direction are defined as the origin of the material to be cut. Considering the position, the origin position of the material to be cut and the X axis and Y of the material to be cut
It is characterized in that the cutting pattern stored in the cutting machine is corrected by using the inclination with respect to the axial direction as a correction element.

[0010]

First, the material to be cut is placed, fixed and held on the cutting support surface of the cutting machine in a laminated state. On the other hand, the cutting pattern is stored in advance in the cutting machine so that the material to be cut placed on the cutting support surface can be used effectively.

Next, for example, a mark sensor is provided in the vicinity of the cutter of the cutter device so that the mark sensor can be moved and operated in the X-axis direction and the Y-axis direction, and the mark sensor can be moved and operated in the X-axis direction or the Y-axis direction. Then, a plurality of marks are detected as data points in the respective axial directions of the X-axis direction and the Y-axis direction, and the difference between the X-axis direction and the Y-axis direction between the data at the plurality of points is used to determine the X-axis direction of the material to be cut. Alternatively, the inclination with respect to the Y-axis direction is calculated.

When calculating the origin of the material to be cut, the point where the virtual extension line of the inclination of the material to be cut with respect to the X-axis direction and the virtual extension line of the inclination with respect to the Y-axis direction intersect is calculated. Establish. The cutting pattern set in the cutting machine is corrected based on the inclination of the material to be cut with respect to the X-axis direction and / or the Y-axis direction and the origin of the material to be cut, or the cutting pattern is cut while being corrected. It will continue.

Therefore, it is possible to accurately cut into a desired cutting pattern even when the material to be cut is placed on the cutting support surface while being displaced.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. <Embodiment 1> FIG. 1 is a perspective view showing an outline of a cutting machine equipped with a suction type mounting table, and FIG.
Indicates the cutting machine as a whole.

The cutting machine 1 is provided with three suction boxes 3, 3, 3 horizontally arranged on a base frame 2, and is arranged so as to run on the suction box 3 endlessly. The bristles 5 that form the cutting support surface 4 and the lower portion of the suction box 3.3.3, and the woven cloth or knitted fabric on the cutting support surface 4 through the suction box 3.3.3. A suction type mounting table 9 formed by a suction duct 7 and a suction device 8 for generating a suction force for fixing the material (cutting material) 6 and an upper part of the cutting support surface 4 are movable in any direction. The cutter device 10 arranged as follows,
A mark sensor 12 provided in the vicinity of the cutter 11 of the cutter device 10 for detecting the posture of the cloth 6 placed on the cutting support surface 4, and the cutter device 10 and its driving device are collectively controlled. And a control device 14 provided with a storage device 13 for presetting a cutting pattern.

The suction boxes 3, 3, 3 are formed in a rectangular shape corresponding to the length and width of the effective space for cutting, and endless on both sides in the width direction of the suction boxes 3, 3, 3. A chain is arranged along the length direction of the base frame 2, and a plurality of receiving plates, both ends of which are supported by both chains, are fixed to the outer circumference of both side chains to form an endless track type conveyor having a well-known structure. The cutting support surface 4 is formed by arranging the bristles 5 on the upper surface of the plate.

The cutter device 10 comprises an X-axis direction moving portion 15 and a Y-axis direction driving portion 16, and the X-axis direction moving portion 15 is rotatable between both ends of the suction type mounting table 9 in the longitudinal direction. The belt 19 with a blade for movement is wound around the gears 17 and 18 provided on the
While connecting the lower end of the block 20 to a part of
Gear 1 on one end side around which a belt 19 for moving a blade is wound
8 and an output shaft 22 of the electric motor 21 are connected by a belt 23 with a blade for driving, and the driving motor 2
By controlling the rotation direction and speed of the blade 1, the cutter 11 causes the cutter 11 to move in the longitudinal direction of the suction-type mounting table 9 via the blade belt 19 for movement and the belt 23 for driving.
It can be moved in the X-axis direction.

The Y-axis direction driving unit 16 is the suction type mounting table 9 described above.
X-axis direction moving parts 15 and 15 provided respectively in the width direction of the
A frame (not shown) that bridges the guide bridge 24 and supports the cutter 11 by a Y-axis direction driving motor (not shown) is guided by the guide bridge 24 and moves in the Y-axis direction. Is configured to be. The cutting pattern set in the storage unit 13 of the control device 14 is
As shown in FIG. 3, the origin M / C is set in the coordinates in the storage device 13.
The longitudinal direction of the cloth placed on the cutting support surface 4 is set in the X-axis direction extending from, and the width direction of the cloth is set in the Y-axis direction.
The cutting shapes are formed in a continuous state on the set fabric surface so as to obtain the best yield.

The storage device 13 of the control device 14 is shown in FIG.
As shown in FIG. 5, a point scanning control unit 26 that scans the mark sensor 12 in the X-axis direction or the Y-axis direction, and a material edge detection unit 27 that detects a mark (in this example, the edge portion of the material) 25 of the material 6. A current position detection unit 28 that detects the scanning start position of the mark sensor 12, and a point storage unit 29 that stores the coordinate position of each point of the mark 25 detected by the material edge detection unit 27 and the current position detection unit 28. , A plurality of points A, which will be described later, stored in the point storage unit 29.
It is set in advance in the storage unit 13 and the cloth inclination calculating unit 30 that calculates the inclination of the cloth 6 at the coordinate positions B, C, D, and the like, and the cloth origin calculation unit 31 that calculates the origin of the cloth 6. A coordinate conversion calculation unit 32 for converting the coordinate system of the cutting pattern so as to match the data obtained from the cloth inclination calculation unit 30 and the cloth origin calculation unit 31, and the coordinate conversion calculation unit 3.
The cutting control unit 33 controls the scanning of the cutter unit 10 to the X-axis direction or Y-axis direction moving unit 15 based on the control signal of No. 2.

In the cutting pattern correction method in the cutting machine configured as described above, first, the suction box 3/3/3
On the cutting support surface 4 formed by the upper bristle body 5 group, a predetermined number of sheets of fabric 6 are fed from the right side in FIG. At this time, suction box 3 ・ 3 ・
When the chain (not shown) is driven while the suction action of 3 is stopped, the receiving plate to which the bristle body 5 is attached causes the suction box 3
The material to be cut 6 is transferred to the effective cutting space on the cutting support surface 4 by rotating counterclockwise on 3.3. The material to be cut 6 thus supplied onto the effective cutting space is subjected to a suction force on the suction boxes 3, 3 and 3, and the cutting support surface 4
It is firmly fixed by suction on the top.

Next, when the material 6 to be cut is firmly suctioned and fixed on the cutting support surface 4, the correction processing procedure 4 of FIG. 5 for correcting the coordinate system of the cutting pattern set in the storage unit 13 is performed.
6 is started. That is, in step 30, the correction starts, and in step 31, the Y-axis direction driving unit 16 scans the mark sensor 12 together with the cutter device 10 in the Y-axis direction from an arbitrary point (X1,0) on the X-axis. When the side edge portion (mark) 25 of the cloth 6 is detected as the point A at 32, the coordinates (X1, y1) of this point A are stored in the point storage unit 29 at step 33.

Subsequently, in step 34, the Y-axis direction drive unit 1
At 6, the mark sensor 12 is moved to an arbitrary point (X2, 0) on the X axis.
When the side edge portion 25 of the cloth 6 is detected as the point B in step 35, the point B
The coordinates (X2, y2) of are stored in the point storage unit 29 in step 36.

After that, in step 37, the X-axis direction drive unit 1
5, the mark sensor 12 is moved to any point (0, Y1) on the Y axis.
When the side edge portion 25 of the cloth 6 is detected as the point C in step 38, the point C
The coordinates (x1, Y1) of are stored in the point storage unit 29 in step 39. Further, in step 40, the mark sensor 12 is moved by the X-axis direction driving unit 15 to an arbitrary point (0, 0) on the Y-axis.
Scan from Y2) in the X-axis direction, and in step 41, fabric 6
When the side edge portion 25 of is detected as the point D, the coordinates (x2, Y2) of the point D are stored in the point storage unit 29 in step 42.

The cloth origin calculating unit 31 calculates the intersection of the virtual extension line of the line segments A and B and the virtual extension line of the line segments C and D as the origin Pz of the cloth 6 (step 43), and further the points A, From B, the fabric inclination calculation unit 30 (y2-y1) /
From (X2-X1) = tan θ, the inclination angle θ of the cloth 6 with respect to the cutting pattern set in the storage unit 13 is calculated in step 44.

The coordinate conversion calculation unit 3 is arranged so as to match the inclination angle θ of the cloth 6 thus obtained and the origin Pz of the cloth 6.
When the coordinate system of the cutting pattern set in the storage unit 13 in step 2 is corrected (step 45), the state of FIG. 3 changes to the state of FIG. 6 (however, in FIGS. 3 and 6, the shape of the preset cutting pattern is (Omitted), and the correction processing procedure 46 ends.

After the correction processing procedure 46 is completed, the cutting control unit 3 is operated based on the data corrected by the coordinate conversion calculation unit 32.
The cutter device 10 is controlled by 3 and the cloth 6 is cut by the cutter 11 in accordance with a cutting pattern having a good yield.

In this embodiment, two points are arbitrarily detected in each of the Y-axis direction and the X-axis direction, and the inclination angle θ of the cloth 6 and the origin Pz of the cloth 6 are obtained based on the detection. Of course, three or more points may be obtained from the Y-axis and the X-axis, respectively. In this case, a plurality of inclinations of the cloth 6 with respect to the Y-axis direction and the X-axis direction are obtained, and by averaging the inclinations, it is possible to detect the inclination angle θ having a higher accuracy.

<Embodiment 2> In the present embodiment, one mark sensor 12 is continuously scanned in the Y-axis direction and the X-axis direction in the vicinity of the side edge portion (end edge portion) 25 of the cloth 6 so that the cloth 6 is formed. The inclination angle θ and the origin Pz of the cloth 6 are obtained, and other configurations and operations are the same as those in the first embodiment.

That is, as shown in FIG. 7, the mark sensor 1
2 is scanned in the positive direction of the Y-axis from an arbitrary point (Xn, 0) on the X-axis, and the side edge portion (mark) 25 of the cloth 6 is detected as a point E, the coordinates (Xn, ye) of this E Is stored in the point storage unit 29. Next, after the mark sensor 12 is moved from the point E in the minus direction of the X axis by a predetermined distance K by the X-axis direction driving unit 16, the mark sensor 12 is scanned in the minus direction of the Y axis to move the side edge portion 25 of the cloth 6 to the point F. And the coordinates (Xf, yf) of F are stored in the point storage unit 29.

Further, the mark sensor 12 is moved from point F to X.
The side edge portion 25 of the cloth 6 is detected as a point G by running in the minus direction of the axis and then scanning in the minus direction of the X axis, and the coordinates (Xg, yg) of this point G are stored in the point storage unit 29. After that, when the mark sensor 12 scans a predetermined distance K in one direction, two points I and J
This scanning / detection is repeated until is detected. The inclination of the cloth 6 is calculated by the cloth inclination calculator 30 from the coordinates of the points E to I thus obtained.

In this way, when the two points I and J are detected by scanning the mark sensor 12 in one direction, these points J are regarded as the origin Pz of the cloth 6 and are stored in the point storage unit 29. .. Here, as shown by W in FIG. 8, there are cases where the mark cannot be detected by scanning the predetermined distance K in one direction of the mark sensor 12. In such a case, the mark sensor 12 scans the predetermined distance K. After that, set it so that it moves in the plus direction of the X axis and place it.

Further, as in this example, the mark sensor 12 scans a predetermined distance K to detect a plurality of points, and the mark sensor 12 scans in one direction to detect two points, thereby determining the origin of the cloth. In this case, it is desirable that the value of the predetermined distance K of the mark sensor be small in order to accurately obtain the origin.

In each of the above embodiments, the mark detected by the mark sensor is formed by the side edge portion 25 of the cloth 6, but instead of this, a mark such as coloring is formed along the side edge of the cloth 6. Of course, it may be applied. In addition, when the origin portion of the cloth 6 placed and fixed on the suction type mounting table is set based on the mechanical or optical detection and always coincides with the origin position of the point storage unit 29, the cloth 6 Of the X-axis direction or the Y-axis direction is detected to correct the cutting pattern set in the cutting machine,
Or it is possible to cut while making corrections.

Needless to say, the moving locus of the mark sensor according to the second embodiment can be switched alternately when the mark is detected as shown in FIG. Further, in each of the above-described embodiments, the cutting pattern is corrected before cutting the cloth with the cutter, but it is also possible to perform the correction sequentially while cutting the cloth.

[0035]

As described above, according to the cutting pattern correction method in the cutting machine of the present invention, a mark sensor is provided in the vicinity of the cutter of the cutter device, and the X axis of the material to be cut is provided by this mark sensor. Direction and Y-axis direction deviation, etc. are detected, and the cutting pattern set in the cutting machine is corrected based on this, or the cutter is cut while making corrections. Compared with this, there is an advantage that a simple device is sufficient and the initial cost and running cost can be significantly reduced.

In addition, in the method for correcting a cutting pattern in the cutting machine according to the present invention, the mark sensor detects the deviation of the material to be cut with respect to the X-axis direction and the Y-axis direction. Even in the case, there is an advantage that the cutting pattern can be accurately corrected, or the cutting can be performed by the cutter while the correction is being performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a cutting machine equipped with a sealing device for a suction type mounting table.

FIG. 2 is a side view showing an outline of a cutting machine including a sealing device for a suction type mounting table.

FIG. 3 is an explanatory diagram of a storage unit that stores a cutting pattern according to the first embodiment.

FIG. 4 is a configuration diagram of a storage unit that stores a cutting pattern according to the first embodiment.

FIG. 5 is a flowchart showing a correction processing procedure for correcting the coordinate system of the cutting pattern according to the first embodiment.

FIG. 6 is an explanatory diagram of a state in which the cutting pattern of the storage unit according to the first embodiment is corrected.

FIG. 7 is an explanatory diagram showing a locus of a mark sensor for detecting points of a material to be cut according to the second embodiment.

FIG. 8 is an explanatory diagram showing a locus of a mark sensor for detecting points of a material to be cut according to the second embodiment.

FIG. 9 is an explanatory diagram showing a locus of a mark sensor for detecting points of a material to be cut according to the second embodiment.

[Explanation of symbols]

 1 ... Cutting machine 6 ... Material to be cut (fabric) 11 ... Cutter 12 ... Mark sensor 25 ... Mark (side edge of 6) M / C ... Origin position Pz ...・ Origin position of the material to be cut

Claims (3)

[Claims] 1. A cutting machine in which a cutting pattern is stored in a cutting machine with an origin position as a reference, and a cutter is moved along the cutting pattern in the X-axis direction and the Y-axis direction to cut a material to be cut. In, a mark sensor movable in the X-axis direction and the Y-axis direction is provided, and the mark sensor is moved in the Y-axis direction from the X-axis direction to form an edge portion of the material to be cut or a mark formed in parallel therewith. Multiple points are detected as data points, and at least 2 of the detected points are detected.
The inclination of the material to be cut with respect to the X-axis direction is calculated from the point data. On the other hand, move the mark sensor from the Y-axis direction to X
It is moved in the axial direction to detect a plurality of marks on the material to be cut as data points, and the inclination of the material to be cut with respect to the Y-axis direction is calculated from the data of at least two of the detected points. The origin position of the material to be cut is determined by calculating the intersection of the virtual extension line of the inclination of the material to be cut with respect to the X-axis direction and the virtual extension line of the inclination with respect to the Y-axis direction, and the origin position stored in the cutting machine is set. Corrected to match the origin position of the material to be cut and calculated X
A cutting pattern correction method for a cutting machine, wherein the cutting pattern stored in the cutting machine is corrected by using the inclination with respect to the axial direction or the inclination with respect to the Y-axis direction as a correction element. 2. A cutting machine which stores a cutting pattern based on an origin position in a cutting machine and moves a cutter in the X-axis direction and the Y-axis direction along the cutting pattern to cut a material to be cut. In the above, a mark sensor movable in the X-axis direction and the Y-axis direction is provided, and the mark sensor is moved from one axis of the X-axis or the Y-axis to the other axis direction, and the edge portion of the material to be cut or this is cut. The marks formed in parallel are detected as data points, and after the points are detected, the moving direction of the mark sensor is changed from the other axial direction to one axial direction and moved for a predetermined distance, and then the other is again By moving the mark sensor in the axial direction of the mark to detect the mark as a data point and detecting the detected mark as a data point, With the data of the point, the inclination of the material to be cut with respect to the X-axis direction and / or the Y-axis direction of the material to be cut is calculated, and the inclination of the material to be cut with respect to the X-axis or Y-axis direction thus obtained is used as a correction element. A cutting pattern correction method in a cutting machine, wherein a cutting pattern stored in the cutting machine is corrected. 3. A cutting machine which stores a cutting pattern based on an origin position in a cutting machine and moves a cutter in the X-axis direction and the Y-axis direction along the cutting pattern to cut a material to be cut. In the above, a mark sensor movable in the X-axis direction and the Y-axis direction is provided, and a mark formed parallel to the edge of the material to be cut is formed at or near the edge of the material to be cut. When the mark sensor is moved from one axis of the axis or the Y axis to the other axis to detect the edge of the material to be cut or the mark formed in parallel to the edge and the mark is detected as a data point, After changing the moving direction of the sensor to one axial direction and moving it for a predetermined distance,
Of the points obtained by repeating the operation of moving the mark sensor in the other axial direction again and detecting the side edge portion of the material to be cut or the mark formed in parallel with this as the data point, The inclinations of the material to be cut with respect to the X-axis and Y-axis directions are calculated from the data, and the intersections of the respective virtual extension lines of the inclinations with respect to the X-axis direction and the Y-axis direction are regarded as the origin position of the material to be cut, A cutting pattern correction method in a cutting machine, characterized in that the cutting pattern stored in the cutting machine is corrected by using the origin position of the cutting material and the inclination of the cutting material with respect to the X-axis and Y-axis directions as correction elements. ..