JP2003113577A - Method for adjusting cutting position in cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology comprising giving marks for indicating reference positions for cutting positions on a cloth to be cut with a cutter and adjusting the cutting positions by confirming the marks when the cloth is cut. SOLUTION: The method for adjusting cutting positions in a cutter is curried out as follows: print data for a specified pattern or the like are printed on a cloth, followed by washing and drying; and the cloth is cut based on specified cutting data. In the method, the point marks for position adjustment are printed together with patterns or the like when the print data are printed, and the cutting data are adjusted based on the positions of the point marks during the cutting. The cutting is performed based on the adjusted cutting data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for cutting a sheet into a predetermined shape.

[0002]

2. Description of the Related Art Recent inkjet printing technology
It is widely used not only in the field of paper and film, but also in the field of dyeing technology for fabrics, and in particular, it has become possible to print on fabrics such as woven fabrics and knitted fabrics in place of the printing conventionally performed by printing. When performing inkjet printing on this cloth, it is carried from the spreading section onto the bed of the printer, placed on the bed of the printer by the hand of a craftsman, etc., the printer head is driven by the output section of the control device, and it is set in advance. It is printed with a print pattern, but when it is placed on the bed of the printer from the spreading section, it is often placed and fixed in a state that deviates from the regular position. The prints are either re-mounted from the beginning, or only the large misalignment is partially corrected before printing.

[0003] Further, the cloth used for ink jet printing is generally subjected to a pretreatment including a heat treatment step called preset such as scouring and bleaching before the ink jet printing step. That is, in the pretreatment step, a treatment liquid for controlling ink bleeding and permeation is applied and heat treatment is performed, and during this pretreatment process, tension is applied to the fabric (especially in the length direction of the fabric), The dough tends to elongate in the tensioned direction and also tends to shrink and deform in a direction perpendicular to the tensioned direction. 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 cloth is stretched and deformed.

Further, tension is also applied by the pressure applied by a pressure roller or the like used to remove the excess processing liquid applied to the cloth or to uniformly impregnate the cloth, whereby the cloth is stretched and deformed. This tendency is particularly strong with stretchable fabrics. In such a case, the treatment liquid is applied to the fabric in a deformed state, and the fabric is dried and fixed in a stretched and deformed state. The fabric printed based on the print data created according to the pattern such as the predetermined pattern in this manner is set in the cutting machine and cut according to the predetermined cutting data. This cutting data is
Along with the print data, it is created in advance by a design device such as CAD.

[0005]

However, when the dough is set in a distorted state due to expansion and contraction of the dough when set in the cutting machine, or when the dough is set in the cutting machine, it is inclined with respect to the normal position. When the dough is set in the state of cutting, cutting based on the cutting data,
Since the positional relationship between the print data and the cutting data is misaligned, there is a problem that the shape of each part and the design are misaligned in each cut part.

The present invention has been proposed in order to solve the above-mentioned problems, and a mark for indicating a reference position of the cutting position is added to the material to be cut by the cutting machine, and the cutting is performed. In doing so, the present invention provides a cutting machine capable of checking the mark and correcting the cutting position.

[0007]

In order to achieve the above object, a method for correcting a cutting position in a cutting machine according to claim 1 is such that after a print data such as a predetermined pattern is printed in each part constituent part, a cleaning process is performed. In the cutting position correction method in the cutting machine configured to cut each of the part constituent parts based on predetermined cutting data to obtain each part, the dough that has been subjected to the drying process is prepared in advance for each part constituent part. Create print data that includes the position information of the point mark for position correction associated with the position information,
At the time of printing the print data, by printing on the basis of the print data, a pattern or the like is printed in each part constituent part, and a point mark for position correction is printed outside each part constituent part, When cutting each part constituent part, by correcting the cutting data based on the position of the point mark, each part constituent part is cut based on the corrected cutting data to obtain each part. It was done.

In the cutting position correcting method for a cutting machine according to a second aspect of the present invention, the point mark is printed in the vicinity of each part constituting part to be cut.
In the cutting position correction method for a cutting machine according to a third aspect of the present invention, the point mark is a mark having a specific shape different from each other at least between adjacent component parts. In the cutting position correcting method for a cutting machine according to a fourth aspect of the present invention, the point mark is a mark of a specific color different between at least adjacent parts constituting parts.

[0009]

As described above, according to the present invention, the print data such as a predetermined pattern is printed in the constituent parts of each part, and the cloth subjected to the washing process and the drying process is applied to each part based on the predetermined cutting data. In a cutting position correction method in a cutting machine configured to cut each component to obtain each part, a print including position information of a point mark for position correction associated with position information of each part component in advance. Data is created, and 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 constituent part, and a point for position correction is provided outside each part constituent part. A mark is printed, and when cutting each part component part, based on the position of the point mark, By compensating the cutting data, each part component is cut based on the corrected cutting data to obtain each part, so that the fabric set on the bed of the cutter is wholly or partially. If it is distorted, the position of the point mark will be distorted as well.
By comparing with the position information of the point mark included in the cutting data, the distortion of the set fabric can be known. Also, if the fabric set on the bed of the cutting machine is totally or partially tilted and deviated from the regular position, the position of the point mark will also shift, so the position of the point mark will be detected. do it,
By comparing with the positional information of the point mark included in the cutting data, it is possible to know the deviation of the set material.

Therefore, the arrangement state of each part constituting the cutting data is corrected based on the distortion or deviation of the cloth thus found, and the cutting is performed based on the corrected cutting data, and the set is set. The sheet can be cut in a state corrected in accordance with the distortion due to the distortion or the inclination of the cloth, that is, the warped state like the distortion due to the distortion and the inclination of the printed pattern, or the skewed state. That is, the deviation between the shape of the cut parts and the printed pattern is eliminated. In addition,
Distortion and inclination of the dough shall include total or partial rotation of the dough.

[0011]

BEST MODE FOR CARRYING OUT 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 drawing, reference numeral 1 generally indicates a cutting machine. The cutting machine 1 includes a cutting head 2 and a control device 3 for controlling the movement of the cutting head 2 in the front-rear, left-right, and up-down directions.
A camera 4 attached to the cutting head 2 to accompany the movement of the cutting head, and an image processing device 5.
It has and. Further, reference numeral 9 in the drawing is a spreading machine for supplying the cloth to the cutting machine 1.

As the camera 4, a CCD image pickup device or an image pickup tube can be used. The cutting head 2 is arranged in the front-rear direction (X
Along the beam extending in the Y-axis direction across the X-axis direction moving portion (not shown) that is movable in the X-axis direction along the X-axis direction). Y that can move in any direction
An axial drive unit (not shown), a cutting device (not shown) to which a cutting blade (not shown) is attached, and Z for vertically moving the cutting blade up and down.
And an axial drive unit (not shown).

FIG. 5 shows the control device 3 and the image processing device 5.
FIG. 3 is a block diagram of a configuration of and around it. In FIG.
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 the point mark image.
The position information of the identified and recognized point mark is output to the control device 3.

In the control device 3, the arithmetic processing section 31 is
The storage unit 32 stores the input position information of the point mark.
The deviation amount is calculated by comparing with the position information of the corresponding point mark included in the cutting data stored in, and based on the obtained deviation amount, the part component part associated with the corresponding point mark is calculated. Correct the cutting data. In this way, based on the position information of the point marks sequentially recognized and identified, the corresponding data of the cutting data stored in the storage unit 32 is corrected, and the entire cutting data stored in the storage unit 32 is corrected. To do. The corrected cutting data is separately written and stored in the storage means 32.

In this way, after the entire cutting data stored in the storage means 32 is corrected, the output unit 3
3 outputs control data based on the corrected cutting data read from the storage means 32 to the drive control unit 34, drives and controls the cutting head 2, and cuts.

The control device 3 and the image processing device 5 are also provided.
As shown in FIG. 6, is realized by a computer 6 in which a dedicated interface board is built in the housing and dedicated cutting machine control software and image processing software are installed. The computer 6 includes a CPU 61, a display unit 62 such as a CRT, and an R.
Storage unit 63 equipped with OM / RAM, hard disk 6
4. It has various functions such as a removable storage media drive device 65, a communication unit 66, a keyboard 67, a mouse 68 and the like. A function corresponding to the image processing apparatus 5 shown in FIG. 5 by the software written in the storage unit 63 and the hard disk 64 and the CPU 61.
A function corresponding to the arithmetic processing unit 31 and a function corresponding to the output unit 33 are realized.

Next, a case of printing a cloth for cutting with the cutting machine configured as described above 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 forming part that forms each part for forming clothes is created. The part data includes shape and pattern data.

In step S102, a molding process is performed to determine a layout for efficiently containing the required component parts within a predetermined standard. By this processing, print data of the parts forming part for forming each part is created.

In step S103, the position of the point mark for position correction is determined in order to add the point mark for position correction to the vicinity of each part. This point mark is
Although it may be added to each part component part separately, it constitutes a part component group that combines multiple part component parts,
It may be added for each part configuration group. In any case, each point mark is added to the outside of each part so as not to affect the design of each part. In this way, each point mark is associated with each part or group of parts and added.

Further, when the point marks associated with different part constituent parts or parts constituent groups are adjacent to each other, the adjacent point marks are specified so as to be different from each other in order to identify the mutual point marks. It is good to have a shape or 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 part or the part component group.

The point mark is added according to the shape and size of the parts constituting part. For example, for elongated component parts, multiple point marks are added in the lengthwise direction, and for large part components, multiple point marks are added around it. For small parts components, only one point mark may be omitted or omitted, for parts with complicated patterns, multiple point marks may be added,
It is possible to omit the point mark for the parts constituting the simple picture.

In step S104, cutting data is created according to the layout and shape of each of the parts constituting parts. In step S105, print information corresponding to the pattern of each part and the position of each point mark is created as print data corrected in consideration of the expansion / contraction ratio of the cloth as the print medium. FIG. 4 shows an example of a print pattern based on this print data.

FIG. 4 is a graphic representation of the print data that has undergone the embossing process. The parts constituting parts P1, P2, P3 ,. .. and two origin marks G1 and G2 are laid out. In addition, in the drawing, the illustration of the pattern of each part constituting part is omitted. The above-described print data creation processing and cutting data creation processing may be realized by installing predetermined software in the computer 6 shown in FIG.

Next, in the case of printing the predetermined pattern and the point mark on the cloth as the print medium based on the print data created as described above, the printing device 8 shown in FIG. This will be described with reference to the flowchart shown in FIG.

First, in FIG. 10 showing the block structure of the printing device 8, the front and rear ends of the print bed 81 of the printing device 8 are supported by the left and right frames 811, 812, and the upper surface portion serves as the material placement surface. Endless sheet 813 and a printer head 82 that can move in an arbitrary direction above the cloth placement surface.
A print ink tank T1 on one side of 812;
A plurality of T2, T3, ... Are arranged, and each printing tank and the printer head 82 are connected by a liquid supply pipe (not shown).

The printer head 82 is provided with an X-axis direction moving section that is movable in the X-axis direction along the front-rear direction (X-axis direction) of the left and right frames 811, 812, and is located between both X-axis direction moving sections. A beam is mounted on the beam in the Y-axis direction, and the beam is provided with a printing device configured by attaching a print nozzle (neither shown) to a carriage (Y-axis direction drive unit) that moves along the beam. The print nozzle is vertically movable (Z-axis direction) in the carriage portion. A camera 83, which is a CCD camera and accompanies the printer head 82, is provided on one side of the printer head 82.

A control device 84 for controlling the printing device 8 is provided beside the print bed 81.
And an image processing device 85 for image-processing the data captured by the camera 83. The data captured by the camera 4 is input to the image processing apparatus 85, and the image processing apparatus 85 can perform various image processings on the input data by image recognition processing.

Since the expansion / contraction ratio of the cloth before and after the pretreatment of the cloth is known in advance, the control device 3 corrects the print data created by the procedure shown in FIG. 7 based on the expansion / contraction ratio of the cloth. The control data is output to the print head 82 for printing.

Next, as shown in the flow chart of FIG. 8, in step S201, the cloth placing surface of the print bed 81 is driven to spread the cloth on the cloth placing surface from the spreading machine (not shown). Or, the dough is spread on the dough placing surface by a craftsman.

When the material is spread on the material mounting surface, the print head 82 prints a predetermined pattern and a point mark based on the control data output from the controller 3 in step S202. As described above,
Fabric S with a predetermined picture and point mark printed
Is obtained. In addition, on the side portion of the cloth, at least two origin marks (G1,
See G2. ) Is also printed.

The printing device 8 described above 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. Then, a control device 84 for comprehensively controlling the printing device 8 and an image processing device 85 for image-processing the data captured by the camera 83.
May be realized by installing predetermined software in the computer 6 shown in FIG.

Next, a case where the cloth is cut by the cutting machine 1 shown in FIG. 1 will be described with reference to the flow chart shown in FIG. First, in step S1, the spreading machine 9 sequentially supplies the fabric on which the predetermined pattern and the point mark are printed by the printing process described above.

At this time, the edge portion of the cloth fed on the cutting table is scanned by the camera 4 in the X-axis direction and at least two origin marks (see G1 and G2 in FIG. 4).
And the overall inclination of the cloth is detected based on the coordinates of these origin marks. Based on the overall inclination of the cloth thus detected, the cutting data is totally corrected. By such correction processing, the positional information of each part constituting portion included in the cutting data and the positional information of each point mark are corrected. In step S2, the control unit 2 drives and controls the cutting head 2 based on the position information of the point mark included in the corrected cutting data to move the camera 4 to the point mark.

In step S3, the camera 4 captures an image of the fabric as the print medium. The imaged image is processed by image processing software to detect a point mark and obtain coordinate data. Since the imaging range of the camera 4 is wide, the point mark is imaged even if the cloth is slightly distorted. As a method of detecting the point mark, the point mark may be detected by a difference in color information from the background. Alternatively, it may be detected by extracting specific color information. Alternatively, it may be detected by recognizing the specific shape.

When a plurality of point marks are added to adjacent positions, as described above, the adjacent point marks are included in the cutting data by having different specific shapes or specific colors. By referring to the existing identification information, it becomes possible to identify each other and to assign each point mark to the associated parts constituent part or parts constituent group.

In step S4, the above step S3
The amount of deviation is calculated by comparing the coordinate data of the point mark obtained in step 1 and the position information of the point mark included in the cutting data. In step S5, if the deviation amount calculated in step S4 is within the predetermined error range, it is determined that they match, and the process proceeds to step S7. If the deviation amount is not within the predetermined error range, it is determined that they do not match, and the process proceeds to step S6.

In step S6, the cutting data of the part constituting part associated with the point mark is positionally corrected according to the amount of deviation. In step S7, it is confirmed whether all the point marks have been imaged. If all the point marks have been imaged, it is determined that the point is 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 material S as the medium to be printed is cut based on the cutting data whose position has been entirely corrected as described above.

In this way, even if the material set in the cutting machine is totally or partially distorted or tilted, the distortion or inclination can be grasped by imaging each point mark, and the distortion or inclination can be grasped. Since the cutting data is corrected based on the degree of cutting and the cutting is performed based on the corrected cutting data, the deviation from the printed pattern in each cut part is eliminated.

When the point mark is printed near each part constituting part, the distortion and inclination of the position of each part constituting part can be corrected respectively, so that accurate cutting can be performed. The larger the number of these point marks, the finer the correction becomes. It is possible to correct the distribution of the point marks more accurately if the distribution of the point marks is uniform over the entire fabric. Further, the position of the point mark may be a position outside each component part and close to the outer edge thereof. If the point mark has a specific shape, it can be easily recognized by the 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 becomes easy to recognize by the image recognition software by using color filter processing or the like.

[0040]

As described above, according to the cutting position correcting method in the cutting machine according to the present invention, after the print data such as a predetermined pattern is printed in each component part, the cleaning process and the drying process are performed. In the cutting position correction method in the cutting machine configured to cut each of the part constituent parts based on the predetermined cutting data to obtain each part, the position information of each part constituent part is previously set to the position information of each part constituent part. Print data including the position information of the associated position correction point mark is created, and at the time of printing the print data, by printing based on the print data, a pattern or the like is formed in each part constituent part. Along with printing, a point mark for position correction is printed on the outside of each part component to cut each part component. In some cases, by correcting the cutting data based on the position of the point mark, each part constituting part is cut based on the corrected cutting data to obtain each part. It is possible to obtain cut parts without deviation from the design.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a cutting machine used in a cutting position correction 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 cloth that is 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 a cutting position correction method in the cutting machine according to the present invention.

FIG. 8 is a flowchart of a part of a cutting position correction method in the cutting machine according to the present invention.

FIG. 9 is a flowchart of a part of a cutting position correction method in the cutting machine according to the present invention.

FIG. 10 is a perspective view of a printing apparatus used in the cutting position correction method in the cutting machine of the present invention.

[Explanation of symbols]

1 cutting machine 2 cutting head 3 control device 4 cameras 5 Image processing device 6 computer 9 Spreading machine 8 printing equipment

Continued front page    F term (reference) 3B154 AB20 BA47 BB51 BB77 BC42                       CA23 CA29 CA33 DA30                 3C024 AA07 FF02 FF05

Claims (4)

[Claims] 1. A print data such as a predetermined pattern is printed in each part constituent part, and a cloth subjected to a washing process and a drying process is cut into each part constituent part based on predetermined cutting data. In a cutting position correction method in a cutting machine configured to obtain each part, in advance, create print data including position information of a position correction point mark associated with position information of each part component, At the time of printing the print data, by printing on the basis of the print data, a pattern or the like is printed inside each part constituent part, and a point mark for position correction is printed outside each part constituent part. When cutting parts, supplement the cutting data based on the position of the point mark. It allows the cutting position correcting method in the cutting machine, characterized by being configured by cutting each part component based on the corrected cutting data to obtain each part that. 2. The method for correcting a cutting position in a cutting machine according to claim 1, wherein the point mark is printed in the vicinity of each part constituting part to be cut. 3. The cutting machine according to claim 1, wherein the point mark is a mark having a specific shape that is different at least between adjacent parts constituting parts. Position correction method. 4. The cutting machine according to claim 1, wherein the point mark is a mark of a specific color different between at least adjacent parts constituting parts. Cutting position correction method in.