WO1993014258A1

WO1993014258A1 - Pattern matching method and apparatus for automatic cutting machines

Info

Publication number: WO1993014258A1
Application number: PCT/JP1993/000009
Authority: WO
Inventors: Kenji Kotaki
Original assignee: Shima Seiki Manufacturing Limited
Priority date: 1992-01-08
Filing date: 1993-01-07
Publication date: 1993-07-22
Also published as: EP0577842A1; EP0577842A4

Abstract

A pattern matching method and a pattern matching apparatus for automatic cutting machines, which are used to easily carry out the automatic marking and cutting of a pattern-carrying sheet material, such as a part of clothes. A sheet material (14) is spread and fixed on a table (13) of a cutting apparatus (1). A camera (11b) is two-dimensionally movable above the sheet material (14). A signal V of an image taken by the camera (11b) is applied to a deflection controller (3) through a line (L2), and displayed on a monitor (31). The monitor (31) displays a reference mark, which is superposed on an image of a pattern, by reference to reference marking data M sent from a marking unit (2) thereto through a line (L3). When a deflection regulator (32) of the deflection controller (3) is operated, deflection data D are supplied to the marking unit (2) through a line (L4), and a head moving signal (O^_) is sent therefrom to the cutting apparatus (1) through a line (L1) to move the head (11). When the reference mark agrees with the characteristic point set on the pattern in advance, the pattern matching operation finishes, and the pattern data are corrected by an amount of deflection by the marking unit (2).

Description

Specification

Pattern matching method and device for automatic cutting machine

The present invention relates to a pattern matching method for an automatic cutting machine that automatically marks and cuts a sheet material such as a patterned fabric. Equipment

Background art

When finishing a fabric such as a cloth or a woven fabric into a product such as a garment, the parts such as the front body, the back body, and the sleeve are cut out from the fabric and the like. There is a cutting process. In this process, an automatic cutting device is used in which one or many sheet materials such as fabrics are stacked on a flat table and cut automatically. It is. The arrangement of the parts to be cut by the automatic cutting device is adjusted by a marking operation. In the marking work, the arrangement of each part to be cut is adjusted so that the maximum amount of parts can be obtained with minimum waste from the sheet material. When making this adjustment by hand, a paper pattern that captures the shape of the part is used. The marking operation can also be performed automatically by automatic marking. By using this device, it is possible to perform marking without using a pattern or the like on which the shape of the component is copied.

While using imported sheet materials such as imported fabrics When fabricating clothing, etc., the parts that are to be stitched together are used in the manufacturing work stage. If they do not match later, the value of the apparel will decrease. This pattern matching work is difficult to perform only by the sewing process. In the cutting process, it is important to perform cutting while conscious of the combination of each part.

In the conventional automatic marking, the arrangement of components is adjusted so as to minimize waste of the sheet material without considering the alignment. Therefore, automatic marking should be used for automatic cutting of solid wood or sheet material that can be ignored even if the color is ignored. Although it is possible to do so, it is difficult to perform automatic cutting in consideration of the combination. This is because fabrics and the like tend to be misaligned when stretched, shrunk and stretched. For this reason, after auto-marking, the stretched sheet material must be modified to match the marking data. This modification is extremely difficult. In products such as clothing, especially men's clothing and women's clothing, there are overwhelmingly many animals.

When combining a conventional marking device and an automatic cutting device, it is necessary to correct the deviation between the calculated 抦 data and the actual pattern of the sheet material. The actual sheet material is shifted due to expansion and contraction, etc. It is positioned and fixed on the table of the cutting device using a needle, etc., so that it matches the pattern, and stored in the memory of the marking device. The sheet material is adjusted to match some deployment data. This adjustment takes a great deal of time, and it is not easy to save time by automating the marking and cutting of sheet material. In addition, cutting multiple sheets of sheet material for cutting can save the time required for cutting even more, but it is also necessary for adjusting the pattern. The effort is even greater. In addition, since the shape of the sheet material spread on the table of the cutting device is large, it is necessary to work by multiple people to adjust the pattern arrangement.

Japanese Patent Application Laid-Open No. 2-2777878 / Japanese Patent Publication No. 1-335887 is known as an improvement of such a combination. In the prior art disclosed in Japanese Patent Application Laid-Open No. 2-2777878, cutting is performed after manual marking. First, place a paper pattern that shows the shape of the part on the sheet material to be actually cut, while performing the alignment by hand. The surface of the sheet material on which the pattern is placed is imaged by a scanner, cutting data is created by image processing, and automatic cutting is performed. In the prior art disclosed in Japanese Patent Publication No. 1-333587, a matching point is determined in each pattern of each part to be cut. Fight at each matching point and design Based on the pattern matching fighter determined from the entire pattern, the position of each design on the stretched sheet material is corrected, and automatic cutting is performed.

In the prior art disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2-2777878, it is necessary to arrange the pattern papers by performing alignment at the time of marking. When a sheet material such as a cloth has a defect, depending on the extensibility of the sheet material, the pattern may be arranged at an arbitrary position on the sheet material. It will not be constant. In a conventional marking device, the arrangement data of a Tokyo Metropolitan product is calculated based on the theoretical arrangement of colors. However, there is a deviation from the actual arrangement of colors, which is necessary on the part. Is not obtained. In addition, in the prior art disclosed in Japanese Patent Publication No. 1333587, it is necessary to provide a space between the figures for correction. It is difficult to use wood effectively.

An object of the present invention is to adjust the deviation of the pattern arrangement between the theoretical and actual patterns when a sheet material such as a fabric has a 抦, thereby providing a patterned sheet material. On the other hand, automatic marking and automatic cutting are both realized, and the automatic cutting machine can effectively use the sheet material. The purpose of the present invention is to provide a combination method and an apparatus therefor.

Disclosure of the invention The present invention is based on patterned sheet materials. In the pattern matching method of the automatic cutting machine for cutting the turn,

Select the feature points in the theoretical arrangement on the printed material and indicate the position data of the feature points and the pattern matching pattern that is linked to the feature points Store the pattern data in memory,

On the stretched patterned sheet material, the positions of the feature points are detected based on the theoretical pattern arrangement,

Calculate the deviation between the position of the detected feature point and the position data of the feature point stored in the memory,

Pattern matching on the stretched patterned sheet material. An automatic feature characterized in that the turns are arranged by correcting only the calculated deviation with respect to the pattern stored over the memory. The present invention, which is a pattern matching method in a cutting machine, further comprises a step of correcting the arrangement of the alignment nozzle, and the other pattern whose arrangement has already been corrected. When the overlapping pattern occurs, a feature point at a different position from the feature point detected on the sheet material based on the theoretical pattern arrangement It is characterized in that the arrangement of the combination pattern is modified based on the

The present invention is characterized in that patterns that do not require pattern matching are also cut from patterned sheets.

Further, the present invention provides a method for securing a product on a table. In a pattern matching device in an automatic cutting machine for cutting a pattern matching pattern from a sheet material,

The position data of the feature points that are predetermined in the theoretical arrangement on the sheet material and the pattern that represents the arrangement of the combination patterns that are linked to the feature points Memory for storing data and

Imaging means for imaging the surface near the position represented by the feature point position data stored in the memory on the extended sheet material;

In response to the output from the imaging means, the position of the feature points on the extended input sheet material obtained from the surface image and the features stored in the memory A serious difference calculation means for calculating a difference from the point position data;

In response to the force from the deviation calculation means, the memory store contents were corrected and the turn data was corrected by the calculated crosstalk, and prolonged. A marking device for an automatic cutting machine, characterized by including a marking means for determining an arrangement of a matching pattern on a patterned sheet material. is there .

Also, in the present invention, the imaging means is movable on a table,

The shank difference detecting means includes:

In response to the output from the imaging means, a surface image near the feature point position is displayed, and the memory store contents are displayed. A display means for displaying the feature point positions of the superimposed images on the surface image;

An instruction means for instructing the movement of the imaging means on the table while referring to the display means;

In response to the output from the instruction means, the feature points in the surface image displayed on the display means are moved to the feature point positions displayed overlapping the surface image. And a calculating means for calculating the deviation from the moving amount of the imaging means when the imaging means is moved.

According to the present invention, the automatic cutting machine cuts the combined pattern from the patterned sheet material. The pattern at the time of cutting is the one that is stored in memory. Modify the turn data. No ,. The modification of the turn is performed by selecting a feature point in the theoretical arrangement on the sheet material and extending the inserted sheet material to this feature point. Calculate the deviation of the position above, and correct the pattern data with the calculated deviation. The layout is repeated for all the pattern matching patterns to match the theoretical layout with the actual sheet material pattern layout. In this way, even if the pattern arrangement on the sheet material stretched due to the elasticity of the sheet material is changed, the pattern matching pattern can be easily formed. You can do the marking to be placed in Corrected no. Turn data is stored in memory. They will be automatically cut based on this marking data.

In addition, according to the present invention, when the arrangement of the alignment pattern is modified, the pattern may overlap with another pattern alignment pattern whose arrangement has already been modified. At the same time, correct the arrangement of the combination pattern based on the other feature points. For example, 10 matching patterns. When cutting the pattern data including the pattern, the data is stored in the memory by the marking process of the fifth combined pattern. There is theoretical theory. Assume that overlap occurs in the turn data. 1st to 4th alignments whose arrangement has already been corrected. The pattern data for the turns will not be re-corrected. Unprocessed 5th to 10th pattern matching blades. Remaining turn, including turn. Turn — repeat the evening markings. In this marking as well, the pattern matching is performed based on the feature points as in the first marking. In this way, the position of the theoretical alignment pattern can be easily corrected on the actual sheet material based on the pattern position difference. In addition, the marking can be re-executed only when necessary to automatically perform the optimal marking according to the actual pattern of the sheet material. This allows the combination and the marking to be performed appropriately. Further, according to the present invention, since the pattern-unnecessary pattern is also cut from the patterned sheet, the pattern-matching pattern can be cut off by rearranging the pattern. The room for correcting the position of the balloon expands.

Further, according to the invention, the automatic cutting machine cuts the patterning butter from the patterned sheet material fixed on the table. The pattern matching device includes a memory, an imaging means, a deviation calculating means, and a marking means. In the memory, the position data of the feature points predetermined in the theoretical arrangement on the sheet material and the pattern matching pattern related to the feature points are included. The pattern data representing the arrangement is stored. The imaging means images the surface near the position represented by the feature point position data stored in the memory on the stretched patterned sheet material. The deviation calculating means responds to the output from the imaging means, and stores the characteristic point position data stored in the memory and the elongated patterned sheet material. The deviation from the above feature point position is calculated, and this deviation data is fed back to the marking means. The marking means is the contents of the memory store. The turn data is corrected by the calculated deviation to determine the arrangement of the pattern matching pattern on the stretched patterned sheet material. The deviation of feature points is calculated, the notation data is corrected, and the pattern is arranged, so that alignment is easy. You can do it quickly.

According to the present invention, the imaging means can move on the tape. The difference detection means includes a display means and a calculation means. The display means displays an image near the feature point imaged by the imaging means, and displays the position of the feature point from the contents of the memory store superimposed on the image. The instruction means instructs movement of the imaging means on the table while imaging the display means. The calculating means, when moving the imaging means so as to move the feature point in the surface image displayed on the display means to the feature point position, calculates an AVI difference from the moving amount of the imaging means. calculate . In this way, it is possible to easily and quickly calculate the rev difference required for pattern matching.

As described above, according to the present invention, the characteristic points in the theoretical 点 arrangement on the inserted sheet material and the characteristic points in the distorted inserted sheet material can be obtained. Since the difference from the feature point of the target is calculated, the calculated difference is corrected, and the matching pattern that flies in a row is placed on the sheet material. By adjusting the misalignment between the actual sheet material and the actual one, it is possible to realize automatic marking and automatic cutting for the inserted sheet material. The correction of the arranged pattern matching pattern adjusts the deviation from the actual 配置 arrangement based on the clear feature points, so the pattern matching based on these feature points is used. Can be easily performed. You That is, after automatic marking of the theoretical arrangement, the marking data was modified to match the stretched sheet material. I can do it. The sheet material can be effectively used without providing an extra space between the turns.

Further, according to the present invention, when the arrangement of the pattern matching pattern is modified, the pattern overlaps with another pattern whose pattern has already been modified. Is generated, the pattern matching is performed based on the characteristic point at a position different from the characteristic point detected based on the theoretical arrangement on the sheet material. ,. Since the layout of the pattern is corrected, the layout of other corrected pattern matching patterns is not changed, and only when necessary. Turns can be relocated. For example, in the case of cutting pattern data including 10 matching patterns and turns, a fifth matching pattern is used. Theoretically, it is stored in memory by the marking process of the turn. It is assumed that overlap occurs in the turn data. The first to fourth patterns that have already been re-arranged, and the 'turn'. Turn data is not re-corrected. The unprocessed 5th to 10th pattern matching patterns, the remaining patterns including 'turns'. Re-mark the turn data. Even in this marking, the pattern matching is performed based on the characteristic points as in the first marking. Like this The position of the theoretical pattern matching pattern can be easily corrected on the actual sheet material based on the positional deviation. Also, if the misalignment is large, re-matching is performed only when necessary, such as when it is necessary, to automatically adjust the optimal pattern to the actual pattern of the sheet material. You can do one king. Further, according to the present invention, it is possible to easily perform pattern matching by re-arranging unnecessary patterns even when the positional deviation is large. I can do it.

Further, according to the present invention, an image is taken in the vicinity of the feature point position on the extended inserted sheet material, and the image is stored in the captured feature point and memory. Calculate the difference from the feature point position data. Feed back this rev difference data and modify the pattern alignment pattern to match the pattern layout on the stretched patterned sheet material. Therefore, the combination in the marking can be easily performed.

Further, according to the present invention, the imaging means for imaging the vicinity of the feature point position on the stretched patterned sheet material is movable on the table, and the difference detecting means is provided. Displays the surface image from the imaging means on the display means together with the theoretical feature point positions from the display. When the imaging means is moved so that the feature point is moved to the feature point position by the pointing means, the amount of movement of the imaging means is reduced.

— 1 9 Since the difference is calculated, the deviation can be easily calculated, and the pattern matching can be performed quickly and easily.

Brief explanation of drawings

Figure 1 is a block diagram showing a schematic configuration of an embodiment of the present invention;

FIG. 2 is a schematic side view showing a part of the cutting device 1 shown in FIG.

Figure 3 is a schematic front view of the deviation control device 3 shown in Figure 1;

FIG. 4 is a schematic front view showing an image of the monitor 31 shown in FIG. 1;

FIG. 5 is a perspective view of the sheet material 14 shown in FIG. Fig. 3 is a plan view showing a turn arrangement;

FIG. 6 is a plan view showing the pattern arrangement on the ideal sheet material 14 i assuming that the sheet material 14 shown in FIG. 1 does not expand and contract. ;

FIG. 7 is a plan view of the fabric 15 for inputting placement data in the memory 23 in the embodiment shown in FIG. 1;

FIG. 8 is a plan view showing the origin data 15a input to the memory 23 shown in FIG. 1;

FIG. 9 is a plan view showing the pattern 60 stored in the memory 23 shown in FIG. 1; FIG. 10 shows an example of the input to the memory 23 shown in FIG. Fig. 3 is a plan view showing a fighter between a turn 60 and a pattern matching mark 60b as a reference point;

FIG. 11 is a flowchart showing the processing of the combining method of the embodiment shown in FIG. 1;

FIG. 12 is a block diagram showing a schematic electrical configuration of the pattern matching device of the embodiment shown in FIG. 1;

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 shows a schematic configuration of an apparatus for carrying out the pattern matching method of the present invention. The cutting device 1 performs cutting based on a head movement signal 0 from the marking device 2 via the line L1. A marking device 2 in which a video signal V is applied from a cutting device via a line L.2 to a AVI difference control device 3 for pattern matching when cutting is performed. Thus, the marking reference data M is provided to the Delta difference control device 3 via the line L3. The marking reference data M is generated based on the position data of the special point, as described later. The Delta difference control device 3 calculates deviation data D from the video signal V and the marking reference data M, and gives the deviation data D to the marking device 2 via the line L4. . The marking device 2 corrects the movement signal 0 of the head to be given to the cutting device 1 via the line L1 based on the difference data D. The cutting device 1 is supplied with a sheet material such as a cloth stretched from the spreading device 4. Components such as clothing cut by the cutting device 1 are taken out by the pick-up device 5.

The cutting device 1 will be further described with reference to FIG. FIG. 2 is a schematic sectional view of the cutting device 1. The cutting device 1 is provided with a head portion 11 that is moved by a head movement signal 0 via a line L1. The head section 11 can be dually moved on the table 13 by the moving device 12. The head section 11 includes a cutting cutter 11a and a camera 11b. The camera 11b is directly attached to the cutting cutter 1la. Blade 11c extends vertically downward from cutting cutter 11a. The blade 1 1c cuts the sheet material 14 placed on the table 13. As shown in the partial cross-section, the surface of the table 13 is made up of a brush 13a, and the sheet material 1

4 Pull downward to fix it. When the sheet material 14 is formed by laminating a plurality of fabrics or the like, the vinyl sheet 14a is further stacked on the sheet material 14 and fixed by suction. to be certain .

The marking device 2 shown in FIG. 1 includes a central processing unit (hereinafter abbreviated as “CPU”) 21, a monitor 22, and a memory 23. It is. CPU 2 1 Performs a marking process or the like, and gives a head movement signal 〇 to the cutting device 1 via the line L1. On the monitor 22, a pattern to be cut and the like are displayed. In memory 23, you should cut it. Turn data etc. are stored.

The AVI difference control device 3 will be described with reference to FIG. 3 and FIG. FIG. 3 shows a schematic front view of the difference control device 3, and FIG. 4 shows an image for the monitor 31 provided in the deviation control device 3. The deviation control device 3 includes a monitor 31 and a difference control device 32 in addition to the monitor 31. The monitor 31 is arranged at the center of the screen based on the marking reference data M provided from the marking device 2 via the line L3. The mark 33 is superimposed on the image from the surface of the sheet material 14. On the surface of the sheet material 14, for example, the intersection of a vertical line 40 and a horizontal line 50 is selected as a feature point, and if the sheet member 14 does not expand or contract. Then, the image of the intersection point overlaps the reference mark 33. Thus, arrows 34 indicate the direction of adjustment to be corrected.

The evince difference adjustment device 32 includes a difference amount indication device 35 for performing the difference adjustment represented by the adjustment direction 34 on the monitor 31 and an operation instruction device. 36 is provided. The deviation amount indicating device 35 includes a movement indicating device 35 a realized by a torque pole or the like. And a rotation indicator 35b. The operation indicating device 36 includes a push button 36a for indicating that the movement and rotation indicated by the deviation amount indicating device 35 have been completed, and other various commands. It includes a push button 36b representing a command.

The reference mark 33 is associated with a reference mark, as shown in FIG. It is a reference for defining the outer shape of the turn 60. The monitor 31 has the registration information. It is possible that only part of the turn 60 is displayed. If the deviation is adjusted so that the reference mark 33 is located at the feature point, the pattern matching not shown on the monitor 31 and the part of the 'turn 60' can be used. Deviation correction is performed. The memory 23 stores the position data of the feature points and the data indicating the pattern matching pattern in which each feature point is linked.

Figure 5 shows the sheet material No. 14 before the deviation correction. The turn arrangement is shown, and FIG. 6 shows the ideal sheet material 14 i when there is no expansion or contraction. Indicates the turn arrangement. For example, in the case of clothing using a cloth having a lattice pattern such as a sheet material 14 having vertical and horizontal lattice patterns, the misalignment of the pattern is conspicuous. Pattern matching is important. Therefore, the vertical reference lines 41 to 45 and the horizontal reference lines 51 to 53 are selected from the vertical and horizontal patterns, and these intersections are selected as feature points. FIG. 7 and FIG. 8 show a state in which a vertical reference line and a horizontal reference line are selected. The cloth 15 shown in FIG. 7 has a lattice-shaped pattern formed by vertical lines 40 and horizontal lines 50. Since each of the vertical pattern 40 and the pattern 50 is composed of a plurality of line-shaped patterns, the horizontal reference line 50a shown in ① and ②, and Select the vertical reference line 40a shown in ③ and ④ 'to create the fabric data 15a shown in FIG. 8 and store it in the memory 23 in the marking device 2. Store. As described above, the vertical reference lines 41 to 45 and the model reference lines 51 to 53 are determined for the ideal sheet material 14i shown in FIG. The alignment patterns 61 to 65 that require alignment are characterized by the intersection of the vertical reference lines 41 to 45 and the horizontal reference lines 51 to 53, and their characteristic points. Is placed on the basis of. Pattern-free unnecessary patterns 66 and 67 are used for matching. Turn 61 1 to 65 Place around. Even if it is different from the lattice pattern, it is possible to select characteristic reference lines, create cloth data in the same way, and find characteristic points.

On the sheet material 14 shown in FIG. 5, the characteristic points of the pattern matching patterns 61, 64, and 65 are shifted due to expansion and contraction. To correct this shift, display an image in the range indicated by reference numerals 31a, 31b and 31c on the monitor 31 and display the reference mark 33 a, 33 b, 33 c, and adjust direction 34 a _: Make corrections equivalent to 34b and 34c. No other pattern matching is required when making this correction. When overlapping with turns 66 and 67, no combination is required. Correct the positions of turns 66 and 67. If it overlaps with the already adjusted matching patterns 61 to 65, another point is selected as a feature point for pattern matching.

FIG. 9 and FIG. 10 show a method of selecting a feature point of the pattern matching pattern 60 in tandem with the fabric data 15a. The pattern matching pattern 60 is defined by a pattern matching reference line 60 a, which defines the outer shape of the turn with reference to the pattern matching reference line 60 a, and a vertical pattern 40. The stakeholder with a and the horizontal pattern 50a is determined by selecting the pattern matching mark 60b as a feature point. The matching mark 60b is, no. Close to the center of the turn 60, the striped area is selected for a clear location. Once the positional relationship between the matching mark 60b and the pattern matching reference line 60a is determined, the pattern matching set based on the pattern matching reference line 60a. The arrangement of the turn 60 is also determined based on the pattern mark 60b.

The size of the display areas 31a, 31b, 31c shown in FIG. 5 is, for example, about a square having 3 Ocm as one side. The deformation due to the expansion and contraction of the sheet material 14 is, for example, about 1 cm. Therefore, the deviation can be adjusted while observing the monitor 31 with the deviation control device 3. Is easy.

According to the present embodiment, when there is only one sheet material 14, it is sufficient to align it at the outer edge and spread it on the tape 13, and the monitor 31 1 You can easily make the correction alone by looking at the video above. Even when cutting a plurality of sheet materials 14, it is only necessary to make adjustments so that the positions of the stacked sheet materials 14 do not shift. No adjustment is required to match the layout of the ideal sheet material 14i, and it is necessary to provide an interval between each pattern to correct the position in advance. Since there is no sheet material, the sheet material 14 can be used effectively, and it is particularly useful when the sheet material 14 is expensive.

FIG. 11 is a flowchart showing the processing in the pattern matching method according to the embodiment of the present invention described above. The processing is started from step a1 which is a flowchart. In step a2, the ideal pitch for the marking device, that is, the vertical reference for the ideal sheet material 14 i shown in Fig. 6 綠 4 1 to 4 5 and Enter the data of the horizontal reference lines 51 to 53. In step a3, as shown in FIG. 6, the pattern matching patterns 61 to 65 and the pattern matching unnecessary patterns 66 and 67 are replaced with the ideal sheet material 14. i and mark it. In the next step a4, the cutting device 1 is moved from the marking device 2 to the marking device. From among the data, select the pattern required for alignment, and send the head movement signal 0 so that the camera in the head moves to the pattern matching point. give . In step a5, the monitor 31 of the deviation control device adjusts the pattern matching pattern of the marking data marked with the ideal pattern pitch. Make sure that the int and the actual fabric pattern match. In step a6, as shown in FIGS. 3 and 4, the combination point of the marking data and the pattern of the cloth are matched. Judge whether or not it is necessary. When they do not match, the camera 11b of the head section is moved by the deviation amount indicating device 35.

In step a8, a deviation is calculated according to the movement of the camera 11b. The EV difference control device 3 gives the deviation data D representing the calculated deviation to the marking device 2. In step a9, the marking device 2 is turned off based on the deviation. Move the turn. In step a10, by moving the combined pattern, a check is made as to whether the pattern overlaps another pattern. In step a11, it is determined whether there is no overlap. If they overlap, go to step a12, where the pattern has already been matched. Investigate whether there is any overlap with the turn. This decision is made in step a13, and when there is no overlap, step a14 If it is determined that the remaining patterns overlap in step a13 in which the remaining patterns are marked again, move to another location on the place of origin. Move the force roller 11b attached to the head 11. When step a15 is completed, the process returns to step a8.

When it is determined in step a6 that they match, when it is determined in step a11 that they do not overlap, or when they are determined not to overlap, or in step a14 When the process has been completed, the process proceeds to step a16, where the pattern matching for the next step, "turn," is performed. In step a17, the next step is performed. When there is no turn, the final pattern is determined.In the step a18, the marking data according to the actual fabric is completed. Therefore, the marking data is transferred from the marking device 2 to the cutting device 1, and the sheet material 14 is cut in accordance with the transferred marking data. The process ends in a19.If it is determined in step a17 that the process is not final, the processes in step a4 and below are returned.

As described above, the difference data D is feed-knocked to the marking device 2, and the theoretical pattern arrangement stored in the memory 23 is extended. Modify it so that it fits the 抦 arrangement of the warped patterned sheet material 14. Such processing is realized by an electrical configuration as shown in FIG. Inside the cutting device 1, there is a cutting device Controller 16, Head X direction drive circuit 17, Head Y direction drive circuit 18, Cutting cutter drive circuit 19, and moving device 12, etc. Is included. The camera 11b is attached to the moving device 12 as described above.

The cutting device controller 16 in the cutting device 1 is supplied with a head movement signal 0 from the marking device 2 via the line L1 and is driven. The mobile device 12 is controlled via the circuits 17 and 18.

The marking device 2 includes a CPU 21, a monitor 22 for display, a memory 23, a marking operation circuit 24, and a marking device. The processing circuit 25 and the display processing circuit 26 are included. For the marking operation circuit 24, a combination for marking is performed by a method as shown in FIGS. 9 and 10. Input the position data of the turn 60 and pattern matching mark 60b. The marking processing circuit 25 derives a head movement signal 0 for moving the camera 1 lb so as to image the vicinity of the reference point. The display processing circuit 26 is used to display the pattern matching pattern 60 on the monitor 22 of the marking device and the monitor 31 of the deviation control device 3. Perform the processing.

The deviation control device 3 includes a monitor 31 and a deviation adjustment device 32. The deviation adjuster 32 has A shading amount indicating device 35 and a video signal synthesizing circuit 37 are included. The video signal synthesizing circuit 37 includes a video signal V from the camera 1 lb via the line L2 and a video signal V from the marking device 2 via the line L3. In response to the king reference data M, a video signal for displaying the monitor 31 as shown in FIGS. 3 and 4 is synthesized and given to the monitor 31. Yes.

In the above embodiment, the sheet material 14 to be mounted on the table 13 of the cutting device 1 is fixed, and the head portion 11 is moved to remove the sheet material. Although the amount is calculated, it is needless to say that the difference may be calculated based on the video signal V from 1 lb of the camera. However, it is often difficult to detect a feature point only from the video signal V, so that a human observes the image on the monitor 31 and moves the feature point to the center. It is more accurate to indicate the amount of deviation so as to match the reference mark 33 of the above. In addition, since the reference mark 33 is set at the center of the displayed image, the peripheral area is such that a cathode ray tube (abbreviated as "CRT j") is used as a display element. It is not affected by the image distortion of the part.

Industrial applicability

As described above, the combination method and the apparatus in the automatic cutting machine according to the present invention require the combination of clothes and other materials from sheet materials such as cloth. Parts It can be easily cut. Since the sheet material can be used effectively even after pattern matching, it is particularly suitable for cutting expensive sheet material.

Claims

The scope of the claims

1. In the method of automatic cutting machine for cutting the matching pattern from the purchased sheet material,

Select the feature points in the theoretical arrangement on the sheet material, and represent the position data of the feature points and the arrangement of the combined pattern that flies with the feature points Store the pattern overnight in memory,

The position of the feature point is detected based on the theoretical arrangement on the stretched inserted sheet material,

Calculate the difference between the position of the detected feature point and the position data of the feature point stored in the memory,

The combination pattern on the stretched patterned sheet material was stored in memory. A matching method for an automatic cutting machine, which is characterized in that a turn data is corrected by the calculated AVI difference and then arranged.

2. When modifying the layout of the pattern matching pattern, if there is an overlap with another pattern matching pattern whose layout has already been corrected, use a sheet material. It is characterized in that the arrangement of the alignment pattern is corrected based on the feature points at positions different from the feature points detected based on the theoretical 抦 arrangement above. A combination method for the automatic cutting machine according to claim 1.

3. No need to match the pattern from the purchased sheet material The method of claim 1 or claim 2, wherein the cutting method is also performed by an automatic cutting machine.

4. In the pattern matching device in the automatic cutting machine for cutting the matching pattern from the patterned sheet material fixed on the table,

The position data of the feature points predetermined in the theoretical pattern arrangement on the sheet material, and the pattern representing the arrangement of the pattern matching pattern that follows the feature points. Memory that stores the data and

Imaging means for imaging the surface near the position represented by the characteristic point position data stored in the memory on the stretched patterned sheet material;

In response to the output from the imaging means, the feature points on the stretched input sheet material obtained from the surface image and the memory were stored. Deviation calculating means for calculating a deviation from the feature point position data; and

Responding to the output from the VS subtraction calculation means, the contents of the memory store are displayed. A marker that modifies the turn data by the calculated tolerance to determine the placement of the pattern matching pattern on the stretched patterned sheet material. A combining device for an automatic cutting machine, characterized by including a cutting means.

5-the imaging means is movable on the table ,

The difference detection means includes:

A display means for displaying a surface image in the vicinity of a feature point in response to an output from the imaging means, and displaying a feature point position from a memory store content on the surface image. ,

Instruction means for instructing movement of the imaging means on the table while referring to the display means;

In response to the output from the indicating means, the feature points in the surface image displayed on the display means are moved to the feature point positions displayed overlapping the surface image. 5. The automatic cutting machine according to claim 4, further comprising: a calculating means for calculating the difference from the moving amount of the imaging means when the imaging means is moved. Combining device.

Amended claims

[21 June 1993 (21.06.93) Accepted by the International Bureau; Original Claim 1 was amended; New Claims 4 and 5 were added; Original Claims 4 and 5 Numbers have been renumbered 6 and 7; other claims remain unchanged. (Page 4)]

1. (After correction) Automatic cutting to cut the pattern from the patterned sheet material in which the combining pattern is arranged for the theoretical pattern. In the pattern matching method on the machine,

A feature point is selected on the patterned sheet material that is easily identifiable with respect to the theoretical pattern arrangement, and the position data of the feature point and a pattern matching pattern that flies to the feature point are selected. , Which represents the layout of the turns. Store the turn data in the memory, identify the characteristic points on the stretched patterned sheet material, and detect their positions.

The deviation between the data representing the position of the detected feature point and the position data of the feature point stored in the memory is calculated.

The pattern matching pattern on the stretched insert sheet material was stored in memory. A pattern matching method for an automatic cutting machine, which is characterized in that the calculated deviation is corrected with respect to the turn data and then arranged.

2. When modifying the layout of the pattern matching pattern, if there is an overlap with another pattern matching pattern whose layout has already been corrected, Correcting the arrangement of the pattern matching pattern on the basis of a feature point at a different position from the feature point detected based on the theoretical pattern arrangement on the material Claim 1 characterized by the feature The pattern matching method in the automatic cutting machine.

3-The automatic cutting machine according to claim 1 or 2, wherein the pattern-unnecessary pattern is also cut from the patterned sheet material. How to combine.

4. (Addition) The automatic cutting machine according to claim 1 or 2, wherein the feature points are selected one by one for each combination pattern. How to match the pattern.

5. (Addition) The automatic cutting machine described in claim 1 or 2 is characterized in that the feature points are selected inside each matching pattern. How to combine

6. (After correction) A pattern matching pattern is placed on the theoretical surface, and the matching pattern is fixed from the patterned sheet material fixed on the table. In a pattern matching device in an automatic cutting machine for cutting,

Position data of feature points that can be easily identified with respect to the theoretical arrangement on the inserted sheet material, and pattern data that represents the arrangement of combined patterns that are linked to the feature points Memory to store data and

Imaging means for imaging the surface near the position represented by the feature point position data stored in the memory on the extended inserted sheet material;

Displays the surface image in response to the output from the imaging means Then, the position data indicated as the position of the feature point on the stretched patterned sheet material and the position data of the feature point stored in the memory are compared. A difference calculation means for calculating the deviation,

In response to the output from the deviation calculating means, the pattern data in the memory store is corrected by the calculated deviation, and the extended pattern is obtained. A pattern matching device for an automatic cutting machine, characterized by including a marking means for arranging a pattern matching pattern on an input sheet material.

7. (After correction) The imaging means is movable on the table,

The Delta difference detection means includes:

A display means for displaying a surface image in the vicinity of a feature point in response to an output from the imaging means, and displaying the feature point position from a memory store content on the surface image in a superimposed manner. When ,

In response to the output from the indicating means, the feature points identified from the surface image displayed on the display means are moved to the feature point positions displayed superimposed on the surface image. Calculating means for calculating the deviation from the amount of movement of the imaging means when the imaging means is moved to perform A combining device for an automatic cutting machine according to claim 6, characterized in that:

Instructions under Article 19

Scope of Claim at the Time of Filing After amending paragraphs 4 and 5 respectively, the claim number was changed to paragraphs 6 and 7, and the scope of the new claim was changed. Paragraphs 4 and 5 were added. Claims 1 and 6 have already been filed. For the theoretical pattern arrangement of the patterned sheet material where the arrangement of the turns has been completed, it is clear to select the easily distinguishable feature points and correct the position. did . JP, B 2, 1-3 3 5 8 7 of the second reference example determines the pattern matching points, distributes the parts, and automatically uses the pattern matching points. Correct the position at

JP, B2, 2 — 467078 in the first reference example stores the pattern of at least a part of the fabric, recognizes the image detected by the camera, and recognizes the fabric. Move to correct the position. According to the present invention, since the feature points are selected after the pattern matching pattern arrangement is completed, the effect is obtained that the correction can be easily performed with human intervention. Claims 4 and 5 clarified the differences from the second reference example in the selection of feature points.

Claim 7 clarifies a structure for a human to indicate a feature point.