JP4054556B2 - Cutting position correction method for cutting machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a technique for cutting a sheet into a predetermined shape.
[0002]
[Prior art]
Recent ink-jet printing technology is widely used not only in the field of paper and film but also in the field of fabric dyeing technology, and in particular, can be printed on fabrics such as woven fabrics and knitted fabrics in place of prints conventionally performed by textile printing. It has become like this.
When performing ink jet printing on this fabric, it is carried on the printer bed from the stretched part, placed on the printer bed by the hands of a craftsman, etc., and the printer head is driven by the output unit of the control device and set in advance. The printed pattern is printed, but when it is placed on the printer bed from the stretched part, it is often placed and fixed in a state shifted from the normal position. The printer is mounted again, or only a large shift portion is partially corrected before printing.
[0003]
In addition, the fabric used for inkjet printing is generally subjected to a pretreatment including a heat treatment process called preset, such as scouring and bleaching, before the inkjet printing process.
That is, the pretreatment process is a heat treatment by applying a treatment liquid for controlling ink bleeding and permeation, and during this pretreatment process, tension is applied to the fabric (particularly in the length direction of the fabric). The dough tends to stretch in the direction of tension and to shrink and deform in a direction perpendicular to the direction of tension.
When the treatment liquid is applied to the dough in the pretreatment process, the weight of the dough becomes heavy. As a result, tension is applied and the fabric is stretched and deformed.
[0004]
In addition, tension is applied by the pressurization of a pressurizing roller or the like used to remove excess processing liquid applied to the dough or to uniformly impregnate the processing liquid, so that the dough expands and contracts. This tendency is particularly strong for stretchable fabrics.
In such a case, the treatment liquid is applied to the dough while the dough is deformed, and is dried and fixed while being stretched and deformed.
The fabric printed based on the print data created according to the pattern such as the predetermined pattern in this way is set on the cutting machine and cut according to the predetermined cutting data.
This cutting data is created in advance by a design device such as CAD together with the print data.
[0005]
[Problems to be solved by the invention]
However, when the dough is set in a distorted state due to expansion / contraction of the dough when set in the cutting machine, or when the dough is set in a tilted state with respect to the normal position when set in the cutting machine However, if the cutting is performed based on the cutting data, the positional relationship between the print data and the cutting data is shifted, so that there is a problem that the shape of the part and the pattern are shifted in each of the cut parts.
[0006]
The present invention has been proposed in order to solve the above-mentioned problems. When cutting by adding a mark for indicating a position serving as a reference of a cutting position to a material to be cut by a cutting machine. Provides a cutting machine capable of checking the mark and correcting the cutting position.
[0007]
[Means for Solving the Problems]
After printing the print data such as a predetermined pattern in each part component part, each part component part is cut based on the predetermined cutting data to obtain each part of the fabric that has been washed and dried. In the cutting position correction method in the cutting machine configured in
In advance, print data including position information of position marks for position correction associated with position information of each part component is created,
When printing the print data, by printing based on the print data, a picture or the like is printed in each part component part, and outside each part component part, it is associated with position information of each part component part. Print the point mark for the position correction, which is,
At the time of cutting each component part, the position information of each printed point mark is detected by detecting the position of the printed point mark, and the detected position information and the print data are detected for each point mark. By calculating the amount of deviation by comparing the position information included in, and based on the obtained amount of deviation, by correcting the cutting data of each part component part associated with the corresponding point mark ,
A cutting position correcting method in a cutting machine, wherein each part component is cut based on the corrected cutting data to obtain each part.
[0008]
In the cutting position correction method in the cutting machine according to claim 2,
The point mark is characterized in that it is printed in the vicinity of each component part to be cut.
In the cutting position correction method in the cutting machine according to claim 3,
Point mark in each part component each other at least adjacent are characterized and Turkey have been marked in different specific shapes.
In the cutting position correction method in the cutting machine according to claim 4,
Point mark in each part component each other at least adjacent are characterized and Turkey have been marked in different specific colors.
[0009]
[Action]
As described above, the present invention
After printing the print data such as a predetermined pattern in each part component part, each part component part is cut based on the predetermined cutting data to obtain each part of the fabric that has been washed and dried. In the cutting position correction method in the cutting machine configured in
In advance, print data including position information of position marks for position correction associated with position information of each part component is created,
At the time of printing the print data, by printing based on the print data, a pattern or the like is printed in each part component part, and a point mark for position correction is printed outside each part component part,
At the time of cutting each part component part, by correcting the cutting data based on the position of the point mark,
Since each part component was cut based on the corrected cutting data and each part was obtained,
If the cloth set on the bed of the cutting machine is distorted in whole or in part, the position of the point mark is also distorted, so the point included in the cutting data is detected by detecting the position of the point mark. By comparing with the position information of the mark, it is possible to know the distortion of the set fabric.
In addition, if the fabric set on the bed of the cutting machine is entirely or partially tilted and deviated from the normal position, the position of the point mark is also shifted, so the position of the point mark is detected. Then, by comparing with the position information of the point mark included in the cutting data, it is possible to know the deviation of the set fabric.
[0010]
Therefore, if the arrangement state of each part constituting part of the cutting data is corrected based on the fabric distortion and deviation known in this way, and cutting is performed based on the corrected cutting data, the set fabric distortion It can be cut in a state corrected according to the displacement due to or inclination, that is, in the same manner as the distortion of the printed pattern and the displacement due to inclination, or in the inclined state.
That is, the deviation between the shape of the cut part and the printed pattern is eliminated.
Note that the distortion or inclination of the cloth includes the entire or partial rotation of the cloth.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 is an overall perspective view of the cutting machine, FIG. 2 is a plan view thereof, and FIG. 3 is a side view thereof.
In each figure, the code | symbol 1 has shown the cutting machine whole.
The cutting machine 1 includes a cutting head 2, a control device 3 that controls the movement of the cutting head 2 in the front-rear, left-right, and vertical directions, and a camera 4 that is attached to the cutting head 2 and accompanies the movement of the cutting head. The image processing apparatus 5 is provided. Reference numeral 9 in the drawing is a spreader for supplying the dough to the cutting machine 1.
[0012]
The camera 4 can be a CCD image sensor or an imaging tube.
The cutting head 2 is arranged between an X-axis direction moving part (not shown) that can move in the X-axis direction along the front-rear direction (X-axis direction) of the left and right frames 21 and 22, and both X-axis direction moving parts. A cutting device (not shown) having a Y-axis direction drive unit (not shown) that is movable in the Y-axis direction along a beam extending in the Y-axis direction and a cutting blade (not shown) are attached. And a Z-axis direction drive unit (not shown) that drives the cutting blade to move up and down in the vertical direction.
[0013]
FIG. 5 is a block diagram of the configuration of the control device 3, the image processing device 5, and the surroundings.
In FIG. 5, the data captured by the camera 4 is input to the image processing device 5, and the image processing device 5 processes the input data by image recognition processing to recognize and identify the point mark image. The position information of the recognized point mark is output to the control device 3.
[0014]
In the control device 3, the arithmetic processing unit 31 compares the input point mark position information with the corresponding point mark position information included in the cutting data stored in the storage means 32 and calculates the deviation amount. Based on the calculated deviation amount, the cutting data of the part component part associated with the corresponding point mark is corrected. In this way, based on the position information of the point marks that are sequentially recognized and identified, the corresponding data of the cutting data stored in the storage means 32 is corrected, and the entire cutting data stored in the storage means 32 is corrected. To do. The corrected cutting data is written and stored in the storage means 32 separately.
[0015]
After correcting the entire cutting data stored in the storage unit 32 in this way, the output unit 33 outputs control data based on the corrected cutting data read from the storage unit 32 to the drive control unit 34. Then, the cutting head 2 is driven and controlled to cut.
[0016]
As shown in FIG. 6, the control device 3 and the image processing device 5 have a dedicated interface board built in the housing, and a dedicated cutting machine control software and image processing software are installed. This is realized by the computer 6.
The computer 6 has various functions such as a CPU 61, a display unit 62 such as a CRT, a storage unit 63 having ROM / RAM, a hard disk 64, a removable storage media drive device 65, a communication unit 66, a keyboard 67, and a mouse 68. I have.
A function corresponding to the image processing apparatus 5 shown in FIG. 5, a function corresponding to the arithmetic processing unit 31, and an output unit 33 are constituted by the software written in the storage unit 63 and the hard disk 64 and the CPU 61. The function is realized.
[0017]
Next, the case where the cloth for cutting with the cutting machine configured as described above is printed will be described.
First, print data and cutting data are created according to the flowchart of FIG.
That is, in step S101, for example, part data of each part constituting part constituting each part for constituting clothing is created. This part data includes shape and picture data.
[0018]
In step S102, a mold insertion process is performed to determine a layout for efficiently placing each necessary part component within a predetermined standard size. By this process, print data of part constituent parts for constituting each part is created.
[0019]
In step S103, the position of the point mark is determined in order to add a position correction point mark in the vicinity of each part. This point mark may be added to each part component part, but may constitute a part composition group in which a plurality of part composition parts are combined, and may be added to each part composition group. In any case, it is assumed that each point mark is added outside each part component so as not to affect the design of each part. In this way, each point mark is added in association with each part component or part component group.
[0020]
In addition, when point marks associated with different part components or parts group are adjacent to each other, in order to identify the mutual point marks, each of the adjacent point marks may have a specific shape. It is good to use a specific color. In this case, the cutting data includes identification information for identifying the shape or color of the point mark associated with the part component or part component group.
[0021]
The point mark is added according to the shape and size of the part component. For example, a plurality of point marks are added in the length direction for an elongated part component part, or a plurality of point marks are added around the part component part of a large area, Only one point mark is omitted or omitted for small part components, multiple point marks are added for parts with complex patterns, and parts with simple patterns Point marks can be omitted.
[0022]
In step S104, cutting data corresponding to the layout and shape of each part component is created.
In step S105, print information corresponding to the pattern of each part component and the position of each point mark is created as print data corrected in consideration of the expansion / contraction rate of the fabric as the print medium. An example of a print pattern based on this print data is shown in FIG.
[0023]
FIG. 4 is a graphic representation of the print data that has been subjected to mold insertion processing. The parts constituting parts P1, P2, P3,... Constituting the parts of the clothes and the point marks M1, M2, M3 are shown. ,... And two origin marks G1, G2 are laid out. In the drawing, the illustration of the pattern of each part component is omitted.
The above print data creation processing and cutting data creation processing may be realized by installing predetermined software in the computer 6 shown in FIG.
[0024]
Next, the case where the predetermined picture and the point mark are printed on the cloth as the print medium based on the print data created as described above is shown in FIG. 10 and FIG. This will be described with reference to the flowchart.
[0025]
First, in FIG. 10 showing the block configuration of the printing apparatus 8,
The print bed 81 of the printing apparatus 8 includes an endless sheet 813 whose front and rear ends are supported by the left and right frames 811 and 812 and whose upper surface portion is a fabric placement surface, and an arbitrary direction above the fabric placement surface. A plurality of print ink tanks T1, T2, T3,... Are arranged on one side of both frames 811 and 812. The printer head 82 is connected by a liquid supply pipe (not shown).
[0026]
The printer head 82 is provided with an X-axis direction moving part so as to be movable in the X-axis direction along the front-rear direction (X-axis direction) of the left and right frames 811 and 812, and between the two X-axis direction moving parts. A beam is mounted in the Y-axis direction, and the beam is provided with a printing apparatus constructed by attaching a print nozzle (both not shown) to a carriage (Y-axis direction drive unit) that moves along the beam. The print nozzle can be moved up and down (Z-axis direction) in the carriage portion.
On one side of the printer head 82, a camera 83 comprising a CCD camera accompanying the printer head 82 is provided.
[0027]
Further, on the side of the print bed 81, a control device 84 for comprehensively controlling the printing device 8 and an image processing device 85 for image processing data captured by the camera 83 are provided.
Data captured by the camera 4 is input to the image processing device 85, and the image processing device 85 can perform various types of image processing on the input data through image recognition processing.
[0028]
Since the stretch rate of the fabric before and after the fabric pretreatment is known in advance, the control device 3 controls the print data created by the procedure shown in FIG. 7 based on the stretch rate of the fabric. Is output to the print head 82 and printed.
[0029]
Next, as shown in the flowchart of FIG.
In step S201, the fabric placement surface of the print bed 81 is driven to spread the fabric on the fabric placement surface from a spreader (not shown), or the fabric is spread on the fabric placement surface by a craftsman. The
[0030]
When the fabric is developed on the fabric placement surface, the print head 82 prints a predetermined pattern and point mark based on the control data output from the control device 3 in step S202.
As described above, a fabric S on which a predetermined pattern and point marks are printed is obtained. Further, at least two origin marks (see G1 and G2 in FIG. 4) are also printed on the side portion of the fabric along the longitudinal direction.
[0031]
The above printing apparatus 8 may be realized by adding a print head to the cutting machine 1 shown in FIG. Alternatively, the cutting head may be replaced with a print head. A control device 84 for comprehensively controlling the printing device 8 and an image processing device 85 for image processing of data captured by the camera 83 are provided with predetermined software on the computer 6 shown in FIG. It may be realized by installing hardware.
[0032]
Next, the case where the cloth is cut by the cutting machine 1 of FIG. 1 will be described with reference to the flowchart of FIG.
First, in step S1, a cloth on which a predetermined pattern and point marks are printed by the above-described printing process by the spreader 9 is sequentially supplied.
[0033]
At this time, at least two origin marks (see G1 and G2 in FIG. 4) are detected by scanning the edge portion of the cloth supplied on the cutting table in the X-axis direction with the camera 4, and the origin marks of these origin marks are detected. The overall inclination of the fabric is detected based on the coordinates. Based on the overall inclination of the fabric thus detected, the cutting data is corrected as a whole. By such correction processing, the position information of each part component and the position information of each point mark included in the cutting data are corrected.
In step S2,
Based on the position information of the point mark included in the corrected cutting data, the cutting head 2 is driven and controlled by the control device 2 to move the camera 4 to the point mark.
[0034]
In step S3, the camera 4 picks up an image of a material as a print medium. The captured image is processed by image processing software to detect point marks and obtain coordinate data. Since the imaging range of the camera 4 is wide, the point mark is imaged even if the fabric is slightly distorted.
Note that the point mark may be detected by a difference in color information from the background. Moreover, you may detect by extracting specific color information. Moreover, you may detect by recognizing a specific shape.
[0035]
In addition, when a plurality of point marks are added at adjacent positions, as described above, the identification information included in the cutting data is obtained by making the adjacent point marks have different specific shapes or specific colors. By referring to each other, each point mark can be assigned to an associated part component part or group of parts.
[0036]
In step S4, the point mark coordinate data obtained in step S3 is compared with the position information of the point mark included in the cutting data to calculate the amount of deviation.
In step S5, if the amount of deviation calculated in step S4 is within a predetermined error range, it is determined that they match, and the process proceeds to step S7. If the amount of deviation is not within a predetermined error range, it is determined that they do not match and the process proceeds to step S6.
[0037]
In step S6, the position correction is performed on the cutting data of the part constituting part associated with the point mark in accordance with the amount of deviation.
In step S7, it is confirmed whether all point marks have been imaged. If all point marks have been imaged, it is determined to be final, and the process proceeds to step S8. If there are still remaining point marks, step S2 is performed. Return to.
In step S8, the fabric S as the print medium is cut based on the cutting data whose position has been entirely corrected as described above.
[0038]
In this way, even if the fabric set on the cutting machine is distorted or tilted in whole or in part, the distortion and tilt can be grasped by imaging each point mark, and the degree of distortion and tilt can be determined. Since the cutting data is corrected on the basis of the cutting data and cutting is performed based on the corrected cutting data, a deviation from the printed pattern in each cut part is eliminated.
[0039]
When the point mark is printed in the vicinity of each part component part, the distortion and inclination of the position of each part component part can be corrected, respectively, so that accurate cutting is possible. If the number of point marks is larger, fine correction is possible. The distribution of the point marks can be corrected accurately as a whole when the point marks are uniformly distributed over the entire cloth. Further, the position of the point mark may be a position outside each component component and close to the outer edge.
If the point mark has a specific shape, it can be easily recognized by image recognition software. The specific shape may be a cross mark, a radial mark, or various shapes.
Further, when the point mark has a specific color, it can be easily recognized by image recognition software by using color filter processing or the like.
[0040]
【The invention's effect】
As explained above, according to the cutting position correction method in the cutting machine according to the present invention,
After printing the print data such as a predetermined pattern in each part component part, each part component part is cut based on the predetermined cutting data to obtain each part of the fabric that has been washed and dried. In the cutting position correction method in the cutting machine configured in
In advance, print data including position information of position marks for position correction associated with position information of each part component is created,
At the time of printing the print data, by printing based on the print data, a pattern or the like is printed in each part component part, and a point mark for position correction is printed outside each part component part,
At the time of cutting each part component part, by correcting the cutting data based on the position of the point mark,
Since each part component part is cut based on the corrected cutting data so as to obtain each part, it is possible to obtain a cut part without any deviation from the printed pattern.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outline of a cutting machine used in a cutting position correcting method of the present invention.
FIG. 2 is a plan view of a main part of the cutting machine.
FIG. 3 is a side view of a main part of the cutting machine.
FIG. 4 is a plan view of an example of a material to be cut by the cutting machine.
FIG. 5 is a block diagram of a main part of a control mechanism of the cutting machine.
FIG. 6 is a block diagram of a main part of a control mechanism of the cutting machine.
FIG. 7 is a flowchart of a part of the cutting position correction method in the cutting machine according to the present invention.
FIG. 8 is a flowchart of a part of the cutting position correction method in the cutting machine according to the present invention.
FIG. 9 is a flowchart of a part of the cutting position correction method in the cutting machine according to the present invention.
FIG. 10 is a perspective view of a printing apparatus used for a cutting position correction method in the cutting machine of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cutting machine 2 Cutting head 3 Control apparatus 4 Camera 5 Image processing apparatus 6 Computer 9 Spreading machine 8 Printing apparatus

Claims (4)

After printing print data such as a predetermined pattern in each part component part, the parts that have been subjected to the washing process and the drying process are cut out based on the predetermined cutting data to obtain each part. In the cutting position correction method in the cutting machine configured in
In advance, print data including position information of position marks for position correction associated with position information of each part component is created,
When printing the print data, by printing based on the print data, a picture or the like is printed in each part component part, and outside each part component part, it is associated with position information of each part component part Print the point mark for the position correction, which is,
At the time of cutting each component part, the position information of each printed point mark is detected by detecting the position of the printed point mark, and the detected position information and the print data are detected for each point mark. By calculating the amount of deviation by comparing the position information included in, and based on the obtained amount of deviation, by correcting the cutting data of each part component part associated with the corresponding point mark ,
A cutting position correcting method in a cutting machine, wherein each part component is cut based on the corrected cutting data to obtain each part. 2. The cutting position correction method for a cutting machine according to claim 1, wherein the point mark is printed in the vicinity of each part component to be cut. Point marks, cutting position compensation method for cutting machine according to any one of claims 1 or 2, characterized in the Turkey have been marked in different specific shapes at each part component each other at least adjacent. Point marks, cutting position compensation method for cutting machine according to any one of claims 1, 2, and 3 in the respective parts component each other, wherein the benzalkonium been marked with different specific colors at least adjacent .

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