JP2007239155A - Cutting device, cutting method, cutting program and cutting program-memorized memory medium capable of being read with computer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting device which can prevent a cutting pattern from being set to a position protruded from a sheet material or the like. <P>SOLUTION: This cutting device changes and corrects [Fig. (b)] the lateral dimension of a sheet material in the lateral direction of a sheet material of a cutting pattern 55 in response to the change in the width of the sheet material, in the preliminarily memorized cutting pattern 55 [Fig. (a)]. When the cutting pattern 55 is corrected, the sheet material is cut in the corrected cutting pattern 55 to make the cut product. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cutting device, a cutting method, a cutting program, and a computer-readable storage medium that stores the cutting program, for example, a cutting device that cuts a circular knitted fabric.

  For example, clothing such as a T-shirt is produced by sewing parts such as a body and sleeves prepared in advance. The part is obtained by cutting a sheet material such as a fabric based on a cutting pattern that is a part mold. An apparatus for automatically producing a cut product such as a part is a cutting apparatus. In other words, the cutting device cuts the sheet material while controlling the position of the cutting head based on the cutting pattern stored in advance in the computer, thereby producing a cut product.

When a part is produced using a cutting device, a part having a desired shape may not be obtained if the sheet material is arranged out of a normal position. In view of this, there has been proposed an apparatus that displays a cutting pattern on a screen and displays an error when the cutting pattern protrudes from the cutting area (see, for example, Patent Document 1).
International Publication No. 2004/010807 Pamphlet

  Although the width of the sheet material is substantially constant, it is inevitable that the width varies. In particular, when the sheet material is easy to expand and contract like cotton fabric, the variation in width cannot be ignored because the variation in width is large. For example, there is a case where there is no margin in the width of the sheet material at a portion where the width of the sheet material is small, and the cutting pattern is set at a position protruding from the sheet material at that portion. When the sheet material is cut based on such a cutting pattern, a part having a shape greatly different from the desired shape is produced.

  An object of the present invention is to provide a cutting device, a cutting method, a cutting program, and a computer-readable storage medium storing a cutting program capable of preventing the cutting pattern from being set at a position protruding from the sheet material. Is to provide.

  The cutting apparatus according to the present invention includes a storage unit that preliminarily stores a cutting pattern, a measurement unit that measures the width of the sheet material, and the storage according to a variation in the width of the sheet material measured by the measurement unit. A correction unit for correcting the cutting pattern stored in the section to change the width direction dimension along the width direction of the sheet material, and when the cutting pattern is corrected by the correction unit, for cutting after correction A cutting unit that cuts the sheet material according to a pattern to produce a cut product.

  In the cutting apparatus according to the present invention, the cutting apparatus includes a first setting unit that sets a fixed dimension area on a first screen on which a cutting pattern is displayed, according to an input from an operator, and the correction unit includes the first setting unit. The width direction dimension is not changed in the overlapping area of the cutting pattern displayed on the screen with the dimension fixing area, and the width direction dimension is changed in the area other than the overlapping area of the cutting pattern. Can be.

  In the cutting apparatus according to the present invention, the first setting unit may input the first screen according to an input from an operator for a cutting pattern that is not a correction target that does not change the widthwise dimension in the overlapping region. Among the plurality of types of cutting patterns displayed on the first screen, and the correction unit uses the measurement unit for the non-target cutting patterns set on the first screen. According to the measured variation in the width of the sheet material, the width direction dimension can be varied.

  In the cutting device according to the present invention, the cutting device generates a cutting pattern that does not change the dimension in the width direction by an operator input from among a plurality of types of cutting patterns displayed on a second screen. A second setting unit for setting the screen of 2, when the cutting pattern is set in the second setting unit, the cutting pattern that does not change the width direction dimension, about the cutting pattern, The sheet material can be cut as previously stored in the storage unit.

  In the cutting apparatus according to the present invention, when the cutting pattern that does not change the width direction dimension is set, the second setting unit displays the sheet material displayed on the second screen by an operator's input. And the cutting pattern is moved to a position including the edge of the sheet pattern by the second setting section. Is set, the cutting pattern has a shape as stored in advance in the storage unit, and a cut product including an edge of the sheet material can be produced.

  In the cutting apparatus according to the present invention, the correction for changing the width direction dimension of the cutting pattern stored in the storage unit is the width direction of the cutting pattern in a portion where the width of the sheet material is larger than a predetermined value. The dimension can be enlarged so that the width direction dimension of the cutting pattern is reduced in a portion where the width of the sheet material is smaller than a predetermined value.

  In the cutting apparatus according to the present invention, the sheet material is, for example, a cylindrical sheet material.

  The cutting method according to the present invention includes a storage step for storing a cutting pattern in advance, a measurement step for measuring the width of the sheet material, and the storage according to a variation in the width of the sheet material measured in the measurement step. A correction step for correcting the cutting pattern memorized in the step so as to vary the width direction dimension along the width direction of the sheet material, and a cutting pattern after correction when the cutting pattern is corrected in the correction step. A cutting step of cutting the sheet material according to a pattern to produce a cut product.

  The cutting program according to the present invention causes a computer to execute the above steps.

  A computer-readable storage medium according to the present invention stores the above cutting program.

  According to the present invention, when the width of the sheet material fluctuates, correction is performed to vary the dimension in the width direction of the cutting pattern accordingly. Thereby, it is possible to prevent the cutting pattern from being set at a position protruding from the sheet material.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a hardware configuration of a cutting apparatus 1 according to the present embodiment. The cutting device 1 has a configuration in which a cutting machine 5, a sensor 7, and a personal computer 9 are connected to a control panel 3. First, the cutting machine 5 will be described with reference to FIGS. 2 and 3. 2 is a plan view of the cutting machine 5 and the like, and FIG. 3 is a side view of the cutting machine 5 and the like.

  The cutting machine 5 includes a work table 11, a cutting head moving mechanism 13, and a cutting head 15. Here, the longitudinal direction of the work table 11 is defined as the x direction, the width direction is defined as the y direction, and the height direction is defined as the z direction. The work table 11 includes two side portions 17 along the x direction and a belt conveyor 19 disposed therebetween.

  The belt conveyor 19 has a configuration in which a belt 23 is supported by two rollers 21. On the belt 23, a sheet material 27 conveyed from a belt conveyor type sheet material conveying machine 25 located upstream of the cutting machine 5 is placed. The sheet material 27 is placed on the belt 23 and sent to a predetermined position on the work table 11. In the sheet material conveying machine 25, the next sheet material 27 to be conveyed to the cutting machine 5 is prepared. Rails 29 extending in the x direction are disposed on the two side portions 17 of the work table 11.

  The cutting head moving mechanism 13 includes two x-direction moving units 31, a rail 33, a y-direction moving unit 35, a z-direction moving unit 37, and a rotating unit 39. Each of the two x-direction moving units 31 is movable on the corresponding rail 29 in the x direction. The rail 33 extends in the y direction, is disposed above the belt 23, and is supported by the x direction moving unit 31. The y-direction moving unit 35 is arranged to be movable on the rail 33 in the y direction. The z-direction moving unit 37 is attached to the y-direction moving unit 35 and is movable in the z direction. The rotating part 39 is attached to the z-direction moving part 37 so as to be rotatable about an axis in the z direction.

  The cutting head 15 is installed in the rotating unit 39. The cutting head 15 is provided with a round blade 41 for cutting the sheet material 27. The cutting head moving mechanism 13 controls the position of the cutting head 15 in the x direction, y direction, and z direction, and the rotation angle about the axis in the z direction, and controls the position of the cutting head 15 by combining these.

  The control panel 3 is provided with various devices for operating the cutting machine 5 such as operation control of the belt conveyor 19 and movement control of the cutting head moving mechanism 13. The sensor 7 is an analog sensor that detects the positions of the edges 43 and 45 that define the width of the sheet material 27. The sensor 7 is installed in the sheet material transport machine 25 and is located above the edges 43 and 45 of the sheet material 27. The sensor 7 may be installed upstream of the sheet material transporting machine 25 or may be installed in the cutting machine 5. Using the personal computer 9 shown in FIG. 1, the cutting pattern correction and various settings described below are executed.

  FIG. 4 is a diagram showing an example of the screen 51 displayed on the display of the personal computer 9. The personal computer 9 stores a cutting pattern 55 in advance. Specifically, it is the coordinate data of the cutting pattern 55. In addition, the personal computer 9 stores in advance coordinate data of the sheet pattern 53 indicating the pattern of the sheet material 27. Hereinafter, these data are referred to as pattern data.

  The screen 51 includes images of three cutting patterns 55 arranged on the sheet pattern 53. This image is a reduced scale display based on the pattern data. The edges of the sheet pattern 53 are given the same numbers as the edges 43 and 45 of the sheet material 27 of FIG.

  The cutting pattern 55 set on the screen 51 is corrected to the movement locus of the cutting head 15 by the personal computer 9 shown in FIG. The movement trajectory is determined by the rotation amounts of the motors of the x-direction moving unit 31, the y-direction moving unit 35, the z-direction moving unit 37, and the rotating unit 39. The movement trajectory is read from the personal computer 9 into the control panel 3, and based on this, the sheet material 27 is cut with the round blade 41 while controlling the position of the cutting head 15 in FIG. To make cut products (for example, parts like the body and sleeves). The screen 51 includes an image of a button 57 that is operated when various settings are made for the cutting pattern 55. Various settings will be described later.

  One of the features of the present embodiment is that when the width of the sheet material 27 changes due to the expansion and contraction of the sheet material 27, the cutting pattern 55 is corrected so that the cutting pattern 55 is changed to the sheet pattern 53 (that is, the sheet For example, it is prevented from being set at a position protruding from the material 27). This correction will be described.

  5, 6, and 7 are diagrams showing a screen 51 that includes a cutting pattern 55 arranged on the sheet pattern 53. Unlike the screen 51 shown in FIG. 4, the screen 51 shown in FIGS. 5, 6, and 7 shows only the pattern and omits the buttons 57 and the like. The cutting pattern 55 has various shapes. For the sake of simplicity, the cutting pattern 55 will be described using the cutting pattern 55 having an octagonal shape. Further, the cutting pattern 55 includes the edges 43 and 45, but does not have to extend to the edges 43 and 45.

  FIG. 5 is a diagram showing the sheet pattern 53 and the cutting pattern 55 displayed based on the pattern data (coordinate data of the cutting pattern 55 and the sheet pattern 53) stored in the personal computer 9 in advance. The width of the sheet pattern 53, that is, the width of the sheet material 27 shown in FIG. 2 is set to a predetermined value w.

  FIG. 6 is a diagram for explaining correction for reducing the cutting pattern 55. If a portion having a width smaller than w (for example, 0.8 w) exists in the sheet material 27, the cutting pattern 55 may be set at a position protruding from the sheet pattern 53 as shown in FIG. is there. This occurs when the cut product includes the edge 45 of the sheet material 27 or is disposed near the edge 45. When the sheet material 27 is cut according to the cutting pattern 55 shown in FIG. 6A, a cut product having a shape greatly different from a desired shape is produced.

  Therefore, in a portion where the width of the sheet material 27 is small, as shown in FIG. 6B, correction for reducing the width direction dimension along the width direction of the sheet material 27 of the cutting pattern 55 stored in the personal computer 9 is performed. (Hereinafter, the width direction dimension along the width direction of the sheet material 27 may be referred to as “width direction dimension”).

  Here, since the width of the sheet material 27 is reduced from w to 0.8 w, the regions of the cutting pattern 55 with the width direction dimensions p, q, r are 0.8p, 0.8q, 0, respectively. Reduce to .8r. As described above, in the portion where the width of the sheet material 27 is smaller than the predetermined value w, the cutting pattern 55 protrudes from the sheet pattern 53 (sheet material 27) by correcting the width direction dimension of the cutting pattern 55. It is prevented from being set to the specified position.

  Even if the width of the sheet material 27 is the predetermined value w, the sheet material 27 is inclined and disposed on the sheet material transport machine 25 (that is, the longitudinal direction of the sheet material 27 in FIG. 2 is not parallel to the x direction), and the sheet is in that state. Even when the material 27 is conveyed to the cutting machine 5, the cutting pattern 55 may be set at a position protruding from the sheet material 27. Therefore, in the present embodiment, even when the sheet material 27 is disposed at an inclination, the correction is executed assuming that the width of the sheet material 27 has changed. In the present invention, it is assumed that the width of the sheet material fluctuates even when the sheet material is inclined.

  Next, correction for enlarging the cutting pattern 55 will be described with reference to FIG. This correction is applied when the cut product includes the edge 43 and the edge 45 of the sheet material 27. As an example in which the edge 43 and the edge 45 are used, there is a case where the sheet material 27 is cylindrical. Examples of the cylindrical sheet material 27 include a cylindrical fabric called a circular knitted fabric. For example, when the body is made using the cylindrical fabric, the edges 43 and 45 of the sheet material 27 are also used, and the body around the front body and the back body is produced. In addition, examples of the cylindrical sheet material 27 include a cylindrical film material. Another example in which the edge 43 or the edge 45 is used is a case where the edge 43 or 45 is specially processed.

  As shown in FIG. 7A, when the sheet material 27 has a portion whose width is larger than w (for example, 1.2 w) in the sheet material 27, the cutting pattern 55 is one of the sheet patterns 53 in that portion. It does not extend to the edge 45. When the sheet material 27 is cut according to the cutting pattern 55, a cut product that does not include the edge 45 is manufactured even though it is desired to manufacture a cut product that includes the edge 45 of the sheet material 27.

  Therefore, correction for enlarging the dimension in the width direction of the cutting pattern 55 stored in the personal computer 9 is performed. Here, since the width of the sheet material 27 is increased from w to 1.2 w, the regions in which the width direction dimensions of the cutting pattern 55 are p, q, and r are 1 as shown in FIG. .2p, 1.2q, 1.2r. As described above, in the portion where the width of the sheet material 27 is larger than the predetermined value w, correction is performed to enlarge the dimension in the width direction of the cutting pattern 55. By this correction, the cutting pattern 55 can be set at a position extending to the edge 45 of the sheet pattern 53 (sheet material 27).

  As described above, the cutting apparatus 1 according to the present embodiment has a correction function of enlarging the cutting pattern 55, but the present invention is not limited to this. That is, in the portion where the width of the sheet material 27 is larger than the predetermined value w, the cutting pattern 55 is set so as to protrude from the sheet pattern 53 (the sheet material 27), similarly to the portion where the width of the sheet material 27 is the predetermined value w. Therefore, a cut product having a desired shape can be produced. Therefore, it is not necessary to perform correction for enlarging the cutting pattern 55 other than using the edges 43 and 45 of the sheet material 27.

  6 and 7, the example in which the width of the sheet material 27 is changed from w to 0.8 w or 1.2 w in the entire portion of the sheet material 27 where the cutting pattern 55 is set has been described. However, even when the width of the sheet material 27 is gradually changed at the portion where the cutting pattern 55 of the sheet material 27 is set, the correction of enlargement / reduction of the cutting pattern 55 according to the present embodiment can be applied. .

  A calculation method for correcting the cutting pattern according to the present embodiment will be described. FIG. 8 is a diagram for explaining this. FIG. 8A shows the sheet pattern 53 and the cutting pattern 55 based on the pattern data stored in advance in the personal computer 9 of FIG. One edge 43 shown in FIG. 8A is set on the x-axis. Since the width of the sheet material 27 is set to w, the other edge 45 is set to a position separated from the edge 43 by w.

  Before the sheet material 27 shown in FIG. 2 is conveyed to the cutting machine 5, the edges 43 and 45 shown in FIG. 8B are detected by the sensor 7 installed in the sheet material conveyance machine 25. Then, the positions of the edges 43 and 45 are obtained at a constant interval (for example, X is 1 mm interval). That is, the edges 43 and 45 are represented by points at a constant interval. Based on these positions, the approximate linear equations of the edges 43 and 45 shown in FIG. 8B are calculated using, for example, the least square method.

  Here, the edge 43 is approximated by a straight line Y = aX + b, and the edge 45 is approximated by a straight line Y = cX + d. In order to simplify the explanation, the edges 43 and 45 are approximated by a linear function, but they can also be approximated by a polynomial approximation curve. In FIG. 8B, the width of the sheet pattern 53 (sheet material 27) is gradually reduced.

  Next, the X coordinate (X1, X2, X3, X4 in FIG. 8B) of the sheet pattern 55 is substituted into Y = aX + b and Y = cX + d. Then, the actual value W of the width of the sheet material 27 is calculated using the formula: W = (cX + d) − (aX + b). For example, in the case of X1, W = W1 = (cX1 + d) − (aX1 + b).

Then, the coordinates (x, y) of the cutting pattern 55 shown in FIG. 8A are converted into the coordinates (X, Y) of the cutting pattern 55 shown in FIG.
X = x
Y = (aX + b) + {y × (W ÷ w)}

  For example, (x1, y1) is converted to (X1, Y1). X1 = x1, Y1 = (aX1 + b) + {y1 × (W1 ÷ w)}. The above is the calculation method for correcting the cutting pattern 55.

  In this embodiment, according to the fluctuation | variation of the width | variety of the sheet | seat material 27, the correction | amendment which changes the width direction dimension along the width direction of the sheet | seat material 27 of the pattern 55 for cutting previously memorize | stored in the personal computer 9 is performed. By this correction, (1) in a portion where the width of the sheet material 27 is smaller than the predetermined value w, the cutting pattern 55 is reduced to set the cutting pattern 55 at a position protruding from the sheet pattern 53, that is, the sheet material 27. To be prevented. (2) In the portion where the width of the sheet material 27 is larger than the predetermined value w, the cutting pattern 55 is enlarged to the position where the cutting pattern 55 extends to the sheet pattern 53, that is, the edge 45 of the sheet material 27. Set.

  Since the sheet material 27 is cut according to the corrected cutting pattern 55, a cut product having substantially the same shape as the desired shape can be produced even in a portion where the width of the sheet material 27 is small. A cut product including the edge 45 of the sheet material 27 can be produced even in a portion where the width of the material 27 is large.

  As described above, according to the cutting apparatus 1 according to the present embodiment, when the width of the sheet material 27 varies, the cutting pattern 55 is corrected accordingly and the sheet material 27 is cut. Therefore, even if the width of the sheet material 27 fluctuates, it is possible to eliminate the processing of stopping the cutting machine 5 and correcting errors manually, and the operating rate of the cutting apparatus 1 can be increased. Therefore, according to the cutting device 1, the continuous operation of the cutting device 1 is possible even when the width of the sheet material 27 is unstable, which is particularly effective when the width of the sheet material 27 is unstable.

  Next, the setting of the dimension fixing area will be described with reference to FIGS. 9 and 10 are diagrams showing a screen 51 including cutting patterns 55a and 55b arranged on the sheet pattern 53. FIG. The screen 51 shown in FIGS. 9 and 10 is different from the screen 51 shown in FIG. 4 in that only the pattern is displayed, and the buttons 57 and the like necessary for setting the dimension fixing area are omitted. A screen 51 shown in FIGS. 9 and 10 is an example of the first screen.

  As shown in FIG. 9A, a dimension fixing area 61 is set on the screen 51 by an input from the operator. The operator uses the mouse or keyboard provided in the personal computer 9 shown in FIG. 1 to set the dimension fixing area 61 on the area where the dimensions of the cutting patterns 55a and 55b are to be fixed.

  If the width of the sheet material 27 changes (here, it changes from w to 1.2w) in the state where the dimension fixing region 61 is set, the width direction dimensions of the cutting patterns 55a and 55b are corrected as follows. The width direction dimension is not changed in the overlapping area 63 between the cutting patterns 55a and 55b and the dimension fixing area 61, and the width direction dimension is changed in the area other than the overlapping area 63 of the cutting patterns 55a and 55b.

  Specifically, in the overlapping region 63, as shown in FIG. 9B, the width direction dimension is not changed and is fixed to q. On the other hand, in the region other than the overlapping region 63, the width direction dimensions are {(1.2w−q) / (w−q)} × p, {(1.2w−q) / ( w−q)} × r. In the region other than the overlapping region 63, the width direction dimension is not simply increased to 1.2 times. Thereby, in the portion where the width of the sheet material 27 is small, the cutting patterns 55a and 55b are prevented from being set at a position protruding from the sheet pattern 53, and a cut product having substantially the same shape as the desired shape is produced. can do. Further, in the portion where the width of the sheet material 27 is large, a cut product including the edge 45 of the sheet material 27 can be produced.

  The function of setting the dimension fixing region is used when there is a place where the width direction dimension is to be fixed to the cut product (for example, a place where the size is aligned with other cut products and stitched with good consistency).

  By the way, as shown in FIG. 9A, since the dimension fixing area 61 extends in the longitudinal direction of the sheet pattern 53, there is an overlapping area 63 with each of the plural types of cutting patterns 55a and 55b displayed on the screen 51. It is formed. However, not all of the plurality of types of cutting patterns 55 a and 55 b want to change the width direction dimension in the overlapping region 63.

  Therefore, the cutting apparatus 1 according to the present embodiment is provided with an exception for setting the dimension fixed region. As shown in FIG. 10A, a cutting pattern (in this case, the cutting pattern 55b) to be excluded from correction that does not change the widthwise dimension in the overlapping region 63 is displayed on the screen 51 by an operator's input. The screen 51 is set from the plurality of types of cutting patterns 55a and 55b.

  When this setting is made, as shown in FIG. 10B, with respect to the cutting pattern 55b, correction is performed to change the width direction dimension in accordance with the change in the width of the sheet material 27 even in the overlapping region 63. The

  Next, setting that does not change the widthwise dimension of the cutting pattern will be described with reference to FIGS. 11 and 12. 11 and 12 are diagrams showing a screen 51 including cutting patterns 55a, 55c, and 55d arranged on the sheet pattern 53. FIG. Similar to the screens 51 shown in FIGS. 9 and 10, the screens 51 shown in these drawings display only the patterns and omit the buttons 57 and the like necessary for setting the width direction dimensions of the cutting pattern 55 to be unchanged. Yes. A screen 51 illustrated in FIGS. 11 and 12 is an example of a second screen.

  As shown in FIG. 11A, a cutting pattern 55 that does not change in the width direction dimension by an operator input is displayed on the screen 51 from a plurality of types of cutting patterns 55a, 55c, and 55d displayed on the screen 51. Set to. Here, the cutting patterns 55c and 55d are set so as not to change the width direction dimension.

  As shown in FIG. 11B, even if the width of the sheet material 27 varies, the width direction dimensions of the cutting patterns 55c and 55d do not vary. Accordingly, the sheet material 27 is cut as the cutting patterns 55c and 55d are stored in the personal computer 9 in advance. The setting that does not change the dimension in the width direction of the cutting pattern 55 is used when, for example, it is desired to fix the size of the cut product in order to align the sizes of the cut products and sew together with good consistency.

  The positions of the cutting patterns 55a, 55c, and 55d are determined based on the edge 43. Therefore, for the cutting pattern 55d including the edge 45 in FIG. 11A, if the dimension in the width direction is not changed, the cutting pattern 55d is located away from the edge 45 as shown in FIG. Moving. When the sheet material 27 is cylindrical and the cut product produced based on the cutting pattern 55d includes the edge 45 of the sheet material 27, the setting of the movement of the cutting pattern 55d is performed as shown in FIG. Is done. That is, the cutting pattern 55d is set to be moved to a position including the edge 45 of the sheet pattern 53 displayed on the screen 51 by an operator input.

  Accordingly, as shown in FIG. 12B, the cutting pattern 55d is moved to a position including the edge 45 in a state where the dimension in the width direction is not changed. Therefore, the cutting pattern 55 d can be manufactured as having a shape as stored in the personal computer 9 in advance and including the edge 45 of the sheet material 27.

  Next, a cutting method according to this embodiment will be described. 13 and 14 are flowcharts for explaining this.

  Pattern data (coordinate data of the cutting pattern 55 and the sheet pattern 53) is stored in advance in the personal computer 9 shown in FIG. 1 (step S1). And the position of the edges 43 and 45 of the sheet | seat material 27 is detected using the sensor 7 shown in FIG.2 and FIG.3 (step S3).

  As described with reference to FIG. 8, approximate linear expressions Y = aX + b and Y = cX + d of the edges 43 and 45 of the sheet material 27 are calculated using the least square method (step S5). Then, correction is executed for each cutting pattern 55 (loop 1). For example, in the case of FIG. 9, the cutting pattern 55a is first corrected, and then the cutting pattern 55b is corrected.

  The correction of the cutting pattern 55 is to perform coordinate conversion described below for each coordinate of the cutting pattern 55 (loop 2). For example, since the cutting pattern 55a shown in FIG. 9 has eight coordinates, the number of coordinates of the loop 2 is eight.

  First, the coordinate conversion in the case where the correction for enlarging / reducing the dimension in the width direction of the cutting pattern 55 described with reference to FIGS. 6 and 7 is described. In this correction, the setting that does not change the width direction dimension of the cutting pattern 55 described in FIGS. 11 and 12 is not performed (No in step S7), and the setting of the dimension fixing area described in FIGS. 9 and 10 is performed. (No in step S9).

  If the width of the sheet material 27 changes, the coordinates of the cutting pattern 55 are converted so that the width-direction dimension of the cutting pattern 55 changes accordingly (step S11). Coordinates are similarly converted for other coordinates of the cutting pattern 55 (end of loop 2).

  For example, in the cutting pattern 55 shown in FIG. 6, each coordinate of the cutting pattern 55 is converted so that the dimension in the width direction is 0.8 times. Accordingly, coordinate conversion is performed in which the width-direction dimension is 0.8 times in the entire region of the cutting pattern 55. When coordinate conversion is executed for each cutting pattern 55 (end of loop 1), each cutting pattern 55 after correction is converted into a movement locus of the cutting head 15 by the personal computer 9 shown in FIG. It is read into board 3. Then, the control panel 3 controls the cutting machine 5, and the sheet material 27 is cut according to the corrected cutting patterns 55 to produce a cut product (step S13).

  Next, coordinate conversion in the case where correction is performed in a state where the width direction dimension of the cutting pattern 55 described with reference to FIGS. If this setting is made, “Yes” is determined in step S7, and it is determined whether the cutting pattern 55 to be corrected does not change the width direction dimension (step S15). For example, since the cutting pattern 55a shown in FIG. 11 is not set so as not to change the dimension in the width direction, No is determined in step S15, and the process proceeds to step S11.

  On the other hand, the cutting patterns 55c and 55d are set so as not to change the dimension in the width direction, and therefore Yes in step S15 and the process proceeds to step S17. In step S17, the coordinates of the cutting patterns 55c and 55d are converted at the same magnification without changing the width-direction dimensions of the cutting patterns 55c and 55d.

  Next, it is determined whether or not the cutting patterns 55c and 55d are set to move to a position including the edge 45 of the sheet pattern 53 (step S19). If it is set to move to a position including the edge 45 as in the cutting pattern 55d shown in FIG. 12, the process proceeds to step S21. In this step, the movement amount of the cutting pattern 55d for positioning the cutting pattern 55d on the edge 45 is calculated based on the actual width of the sheet material 27 at the portion where the cutting pattern 55d is located. The coordinates of the cutting pattern 55d are converted so that this movement amount is obtained. Then, after completing loop 2 and loop 1, the process proceeds to step S13.

  On the other hand, if it is not set to move to the position including the edge 45 as in the cutting pattern 55c shown in FIG. 12, No is determined in step S19, and the process proceeds to step S13 after loop 2 and loop 1 are completed.

  Next, coordinate conversion in the case where correction is performed in a state where the dimension fixed region described in FIGS. 9 and 10 is set will be described. If this setting is made, “Yes” is determined in step S9, and the process proceeds to step S23. In this step, it is determined whether or not the cutting pattern to be corrected is an exception of the dimension fixed region. The cutting pattern 55b shown in FIG. 10 is determined as an exception, and the process proceeds to step S11. On the other hand, the cutting pattern 55a shown in FIG. 10 is no exception, and the process proceeds to step S25.

  In step S25, it is determined whether or not the coordinates are located in an overlapping area 63 with the dimension fixing area 61 of the cutting pattern 55a. If it is positioned, the coordinates in the overlapping region 63 of the cutting pattern 55a are converted without changing the widthwise dimension of the overlapping region 63 of the cutting pattern 55a, that is, at the same magnification (step S27). Then, after completing loop 2 and loop 1, the process proceeds to step S13.

  On the other hand, when the coordinates of the cutting pattern 55a are located outside the overlapping region 63 in step S25, the process proceeds to step S29. In this step, the coordinates of the region other than the overlapping region 63 of the cutting pattern 55a are converted so that the width-direction dimension changes accordingly if the width of the sheet material 27 changes. Then, after completing loop 2 and loop 1, the process proceeds to step S13.

  FIG. 15 is a functional block diagram of the cutting apparatus 1 according to the present embodiment. The cutting apparatus 1 includes a storage unit 71, a measurement unit 73, a correction unit 75, a cutting unit 77, a first setting unit 79, and a second setting unit 81.

  The storage unit 71 stores a cutting pattern 55 in advance. The storage unit 71 is realized by a hard disk, a memory, or the like of the personal computer 9 shown in FIG.

  The measuring unit 73 measures the width of the sheet material 27. The measurement unit 73 includes a sensor 7 that detects the edges 43 and 45 of the sheet material 27 illustrated in FIG. 2, an edge position reading unit that reads the edge position detected by the sensor 7, an edge position storage unit that stores the read position, 8 includes a width calculation unit that calculates the width of the sheet material 27 at each coordinate of the cutting pattern 55 described in 8 and a width storage unit that stores the calculated width value. The edge position reading unit and the edge position storage unit are realized by mounting an expansion board on the personal computer 9 to expand the functions of the personal computer 9. The width calculation unit is realized by the CPU of the personal computer 9. The width storage unit is realized by a hard disk or the like of the personal computer 9. Moreover, the edge position reading unit and the edge position storage unit may be realized as separate CPU boards in the control panel 3, or the edge position storage unit may be realized by a hard disk of the personal computer 9.

  The correction unit 75 varies the width direction dimension along the width direction of the sheet material 27 of the cutting pattern 55 stored in the storage unit 71 in accordance with the variation in the width of the sheet material 27 measured by the measurement unit 73. Corrections to be performed are executed. The correction unit 75 is realized by the CPU of the personal computer 9 shown in FIG.

  The cutting part 77 cuts the sheet material 27 to produce a cut product. In the cutting unit 77, when the cutting pattern 55 is corrected by the correction unit 75, the sheet material 27 is cut according to the corrected cutting pattern 55. The cutting unit 77 is realized by the control panel 3 and the cutting machine 5 shown in FIG.

  The first setting unit 79 performs the following settings (1) and (2) in response to an operator input. (1) For example, the dimension fixing area 61 shown in FIG. 9 is set on the first screen 51 on which the cutting patterns 55a and 55b are displayed. By this setting, the correction unit 75 does not change the width direction dimension in the overlapping area 63 with the dimension fixing area 61 of the cutting patterns 55a and 55b displayed on the first screen 51, and overlaps the cutting patterns 55a and 55b. In an area other than the area 63, correction is performed to change the dimension in the width direction.

  (2) For example, a plurality of types of cutting patterns 55a and 55b displayed on the first screen 51 for the cutting pattern 55b that is not subject to correction that does not change the widthwise dimension in the overlapping region 63 shown in FIG. The first screen 51 is set from among the above. With this setting, the correction unit 75 sets the width-direction dimension of the non-target cutting pattern 55b set on the first screen 51 according to the variation in the width of the sheet material 27 measured by the measurement unit 73. Make corrections to fluctuate.

  The second setting unit 81 performs the following settings (1) and (2) according to the input of the operator. (1) For example, the cutting patterns 55c and 55d that do not change the dimension in the width direction shown in FIG. 11 are changed from the plural types of cutting patterns 55a, 55c, and 55d displayed on the second screen 51 to the second screen. Set to 51. With this setting, the cutting unit 77 cuts the sheet material 27 as stored in the storage unit 71 in advance for the cutting patterns 55c and 55d.

  (2) For example, when the cutting pattern 55d that does not change the dimension in the width direction shown in FIG. 12 is set, the cutting pattern 55d is moved to the position including the edge 45 of the sheet pattern 53 displayed on the second screen 51. Set to move. The cutting portion 77 has a shape as previously stored in the storage portion 71 for the cutting pattern 55 d and produces a cut product including the edge 45 of the sheet material 27.

  The first setting unit 79 and the second setting unit 81 are realized by the display, keyboard, mouse, CPU, etc. of the personal computer 9 shown in FIG.

  Note that the cutting program according to the present embodiment causes the computer to execute the steps illustrated in FIGS. 13 and 14 and causes the computer to function as the blocks illustrated in FIG. The same effect as the cutting method can be obtained. The program may be distributed by being stored in a computer-readable storage medium such as an optical disk, or may be distributed via the Internet or the like.

It is a figure which shows the hardware constitutions of the cutting device which concerns on this embodiment. It is a top view of the cutting machine etc. with which the cutting device concerning this embodiment is equipped. It is a side view of the cutting machine or the like. It is a figure which shows an example of the screen projected on the display of the personal computer with which the cutting device concerning this embodiment is equipped. It is a figure which shows the screen containing the pattern for cutting arrange | positioned on the sheet | seat pattern. It is a figure explaining reduction correction of the pattern for cutting. It is a figure explaining the expansion correction of the pattern for cutting. It is a figure explaining the calculation method of correction of the pattern for cutting concerning this embodiment. It is a figure explaining the setting of a dimension fixed field in correction of the pattern for cutting concerning this embodiment. It is a figure explaining the exception of the setting of the same dimension fixed area | region. It is a figure explaining the setting which does not change the width direction dimension of the pattern for cutting in correction of the pattern for cutting concerning this embodiment. It is a figure explaining the movement of the cutting pattern in the setting which does not change the width direction dimension of the cutting pattern. It is the flowchart 1 explaining the cutting method which concerns on this embodiment. It is the same flowchart 2. It is a functional block diagram of the cutting device concerning this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cutting device, 3 ... Control panel, 5 ... Cutting machine, 7 ... Sensor, 9 ... Personal computer, 11 ... Work table, 13 ... Cutting head moving mechanism, 15 ... Cutting head, 17 ... Side side of work table, 19 ... Belt conveyor, 21 ... Roller, 23 ... Belt, 25 ... Sheet material conveyor, 27 ... Sheet material , 29 ... rail, 31 ... x-direction moving part, 33 ... rail, 35 ... y-direction moving part, 37 ... z-direction moving part, 39 ... rotating part, 41 ... Round blade, 43, 45 ... Edge, 51 ... Screen, 53 ... Sheet pattern, 55, 55a, 55b, 55c, 55d ... Cutting pattern, 57 ... Button, 61 ...・ Dimension fixing area, 63 ... Overlapping area, 71 ... Storage section, 73 ... Measuring section, 75 ... Correction , 77 ... cutting portion, 79 first setter ..., 81 ... second setting unit

Claims (10)

A storage unit for storing a cutting pattern in advance;
A measurement unit for measuring the width of the sheet material;
A correction unit that corrects the width-direction dimension along the width direction of the sheet material of the cutting pattern stored in the storage unit according to the variation in the width of the sheet material measured by the measurement unit. When,
And a cutting unit that cuts the sheet material to produce a cut product according to the corrected cutting pattern when the correction unit corrects the cutting pattern. A first setting unit configured to set a fixed dimension area on a first screen on which a cutting pattern is displayed by an operator's input;
The correction unit does not change the width direction dimension in an overlapping area of the cutting pattern displayed on the first screen with the dimension fixing area, and in the width direction in an area other than the overlapping area of the cutting pattern. The cutting apparatus according to claim 1, wherein correction is performed to change the dimensions. The first setting unit is configured to cut a plurality of types of cutting patterns displayed on the first screen according to an input by an operator for a cutting pattern that is not subject to correction that does not change the width-direction dimension in the overlapping region. Set the first screen from the patterns for use,
The correction unit performs correction for changing the width direction dimension of the non-target cutting pattern set in the first screen in accordance with a change in the width of the sheet material measured by the measurement unit. The cutting device according to claim 2, wherein: The cutting apparatus sets a cutting pattern that does not change the dimension in the width direction on the second screen from among a plurality of types of cutting patterns displayed on the second screen by an operator input. 2 setting units,
When a cutting pattern that does not change the width-direction dimension is set in the second setting unit, the cutting unit cuts the sheet material as it is pre-stored in the storage unit. The cutting device according to any one of claims 1 to 3, wherein: When a cutting pattern that does not change the width direction dimension is set, the second setting unit detects an edge of a sheet pattern corresponding to the sheet material displayed on the second screen by an operator input. Set the cutting pattern to move to the position that includes it,
When the cutting pattern moved to a position including the edge of the sheet pattern is set in the second setting unit, the cutting unit is stored in advance in the storage unit. A cut product having a shape and including an edge of the sheet material is prepared.
The cutting apparatus according to claim 4, wherein: The correction for changing the width direction dimension of the cutting pattern stored in the storage unit is to enlarge the width direction dimension of the cutting pattern in a portion where the width of the sheet material is larger than a predetermined value, The cutting apparatus according to any one of claims 1 to 5, wherein the correction is performed to reduce the width-direction dimension of the cutting pattern at a portion where the width of the cutting pattern is smaller than a predetermined value. The cutting device according to any one of claims 1 to 6, wherein the sheet material is cylindrical. A storage step for storing a cutting pattern in advance;
A measuring step for measuring the width of the sheet material;
A correction step of correcting the width direction dimension along the width direction of the sheet material of the cutting pattern stored in the storage step according to the change in the width of the sheet material measured in the measurement step. When,
A cutting step of cutting the sheet material according to the corrected cutting pattern to produce a cut product when the cutting pattern is corrected in the correcting step.   The cutting program which makes a computer perform the step of Claim 8. A computer-readable storage medium storing the cutting program according to claim 9.

Images