JP2017075416A - Cutting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device which can cut a sheet material along a cutting pattern corresponding to a distortion of the sheet material, and as a result, which can acquire a pattern piece with little distortion.SOLUTION: A cutting device 1 includes a cutting table 2, an undo device 3, a movement control device 4, a cutting unit 22 having a cutter head 25, and a sensor unit 26 having a first sensor 28 and a second sensor 29. The sensor unit 26 detects a pattern which a cloth 7 placed on a support surface 21 of the cutting table 2 has, and the cutter head 25 moves along the pattern. Based on the locus of the movement of the cutter head 25, cutting data is adjusted, and according to the adjusted cutting data, the cloth 7 is cut by the cutting unit 22. A pattern piece acquired by cutting loses a tensile force by being cut off from the other portion of the cloth 7, so that distortion is solved and a normal cutting pattern can be acquired.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cutting apparatus for cutting a pattern piece without distortion from a sheet material having distortion.

  There is a plotter type cutting device as a cutting device for cutting a cloth for clothing to produce a pattern piece. This type of cutting apparatus includes a cutting table having a support surface that supports the fabric, and a cutting unit that incorporates a cutting blade and is driven in a planar direction on the support surface of the cutting table. In this cutting apparatus, cutting data representing a cutting pattern of a pattern piece is input, and on the basis of the cutting data, the cutting blade is operated while driving the cutting unit to cut the fabric, thereby producing a pattern piece. ing.

  In many cutting apparatuses, a cloth having a length necessary for a series of cutting processes is drawn out and placed on a cutting table from an original fabric obtained by winding the cloth into a roll. Here, the fabric is placed in a state including distortion due to a tension applied when the original fabric is manufactured, a tension applied when the original fabric is drawn out, or the like. The pattern piece obtained by cutting the fabric including the distortion has a problem that the tension forming the distortion disappears after the cutting and becomes an incorrect shape different from the cutting pattern.

  In order to solve such a problem, the applicant of the present invention has applied a cutting device configured to project a grid onto the surface of the fabric drawn on the cutting table with a projector and adjust the shape of the grid so as to follow the pattern of the fabric. is suggesting. This cutting apparatus converts a cutting pattern based on the shape of the grid adjusted so as to follow the pattern of the fabric, and cuts the fabric so that the converted cutting pattern is obtained. The pattern piece thus cut into a shape corresponding to the distortion is made to have a normal cutting pattern by eliminating the tension after cutting and eliminating the distortion (see Patent Document 1).

Patent No. 4592808

  However, the above-described conventional cutting device has a problem that the operator needs to adjust the shape of the grid while visually recognizing the handle and the grid of the fabric, so that the operation is relatively troublesome.

  Accordingly, an object of the present invention is to provide a cutting apparatus that can obtain a pattern piece of a normal cutting pattern from a sheet material having distortion, with less labor of an operator.

In order to solve the above problems, the cutting device of the present invention is:
A cutting table having a support surface for supporting the sheet material;
A head that moves in a planar direction on the support surface;
A sensor installed on the head for detecting the pattern of the sheet material;
Based on the detection signal of the sensor, a movement control unit that moves the head along the pattern of the sheet material,
A cutting pattern deforming portion that deforms the shape of the cutting pattern based on the trajectory of the movement of the head,
And a cutting portion that cuts the sheet material along the cutting pattern deformed by the cutting pattern deforming portion.

  According to the above configuration, the sheet material is supported on the support surface of the cutting table, and the pattern of the sheet material is detected by the sensor installed on the head that moves in the direction parallel to the support surface. Based on the detection signal of this sensor, the head is moved by the movement control unit along the pattern of the sheet material. The trajectory along which the head has moved includes the distortion of the sheet material that appears in the pattern of the sheet material. Therefore, the cutting pattern deformed by the cutting pattern deforming portion based on the locus has a shape corresponding to the distortion of the sheet material. The sheet material is cut at the cutting portion so as to follow the deformed cutting pattern. The sheet material is cut along a cutting pattern deformed according to the distortion in a state where the distortion exists. Therefore, the pattern piece obtained by cutting the sheet material becomes an appropriate shape when the pattern piece is cut off from other portions of the sheet material and the distortion is eliminated. Thus, a sensor that detects the pattern of the sheet material, a movement control unit that moves the head along the pattern of the sheet material based on the detection signal of the sensor, and a cutting pattern based on the trajectory of the movement of the head A cutting pattern corresponding to the distortion of the sheet material is obtained by the cutting pattern deforming portion that deforms the shape of the sheet. Therefore, unlike the prior art, the operator does not need to adjust the shape of the grid while visually recognizing the fabric handle and the grid.

  In the present invention, the pattern of the sheet material refers to a pattern that appears by color or unevenness and can be detected by a sensor. For example, the color pattern is expressed by dyes or yarns. The uneven pattern is manifested by weaving, weaving and embossing.

  In the cutting apparatus according to an embodiment, the sensor is a reflective optical sensor.

  According to the embodiment, the pattern of the sheet material can be effectively detected by the reflective optical sensor. Here, the reflection type optical sensor includes a light emitting element and a light receiving element that receives the reflected light reflected from the surface of the sheet material, and detects the color and unevenness of the sheet material pattern. To do. When the reflective optical sensor detects a color, a color sensor that detects a difference in color can be used.

The cutting device of one embodiment is provided with two above-mentioned sensors,
When the output value from one sensor changes, the movement control unit is configured to move the head to the side opposite to the side where the other sensor is located with respect to the one sensor.

  According to the above embodiment, when a pattern is detected by two sensors, when one sensor crosses the contour of the pattern, the output value from this sensor changes. When the output value of the one sensor changes, the movement control unit moves the head to the side opposite to the side where the other sensor is located with respect to the one sensor. Thereby, since the movement of the head is continued in a state where the pattern is located between one sensor and the other sensor, the head can be moved along the pattern. For example, the two sensors can detect both side edges of one linear pattern appearing in a straight line in the width direction of the sheet material if there is no distortion. In addition, the two sensors can detect edges on different sides of two parallel linear patterns appearing in a straight line in the width direction of the sheet material if there is no distortion.

In the cutting device according to one embodiment, the sheet material is drawn from a roll wound in a roll shape,
The two sensors are formed such that their positions can be adjusted in a direction parallel to the direction in which the sheet material is drawn from the original fabric.

  According to the above-described embodiment, the sheet material drawn from the roll wound in a roll shape has a direction in which the sheet material is drawn from the roll due to the tension applied to the sheet material in the course of manufacturing the roll. In the width direction, which is a perpendicular direction, the sheet material often has a distortion shifted in the direction drawn from the original fabric. Here, since the position of the two sensors can be adjusted in a direction parallel to the direction in which the sheet material is drawn from the original fabric, it corresponds to the width or separation of the pattern extending in the width direction of the sheet material. Two sensors can be arranged. Accordingly, the pattern extending in the width direction of the sheet material can be detected by the two sensors, and the head can be moved along the pattern.

  In the cutting apparatus according to an embodiment, the head is a cutter head provided with the cutting portion.

  According to the above embodiment, by installing a sensor for detecting a pattern on a cutter head provided with a cutting section for cutting a sheet material, the cutter head can be used to cut the sheet material and detect the distortion of the sheet material. Can be used for both purposes. Therefore, it is possible to form a cutting device that can obtain a pattern piece of a normal cutting pattern from a sheet material having distortion with a relatively simple component configuration.

  In the cutting apparatus according to an embodiment, the sensor is an image sensor.

  According to the embodiment, the pattern of the sheet material can be detected with high accuracy by using the image sensor as the sensor. A line sensor and an area sensor can be used as the image sensor. When the image sensor is used, the movement control unit moves the head so that a predetermined image pickup device among the plurality of image pickup devices constituting the image sensor continuously outputs the pattern detection signal.

  The cutting apparatus of one Embodiment is provided with the irradiation part which irradiates the shape of the cutting pattern deform | transformed by the said cutting pattern deformation | transformation part on the surface of the said sheet | seat material.

  According to the above embodiment, since the shape of the cutting pattern deformed by the cutting pattern deforming portion is irradiated on the surface of the sheet material by the irradiation unit, the shape of the deformed cutting pattern is adapted to the distortion of the sheet material. It can be confirmed visually. Moreover, about the some pattern piece obtained by cutting a sheet material, the arrangement | positioning state in the sheet material of the cutting pattern deform | transformed by the cutting pattern deformation | transformation part can be confirmed visually. Here, the cutting device preferably includes an arrangement changing unit that changes an arrangement state of the cutting pattern in the sheet material deformed by the cutting pattern deforming unit. By changing the arrangement state of the cutting pattern deformed by the cutting pattern deforming unit corresponding to the distortion by the arrangement changing unit, it is possible to obtain a pattern piece by cutting an appropriate position of the sheet material having distortion. Thereby, for example, it is possible to perform pattern matching of pattern pieces obtained by cutting along a cutting pattern or cutting avoiding defective portions of the sheet material.

It is a figure which shows the cutting device of embodiment of this invention. It is sectional drawing of a sensor and a cutter head. It is a top view which shows a mode that the fabric which has distortion was mounted in the support surface. It is a block diagram which shows the control apparatus of the cutting table of a cutting apparatus, a movement control apparatus, and a sensor. It is a top view explaining the moving direction of the cutter head corresponding to the pattern which the sensor detected. It is a top view explaining the moving direction of the cutter head corresponding to the pattern which the sensor detected. It is a top view which shows the movement locus | trajectory of a cutter head. It is a top view which shows the cutting pattern in the fabric without distortion. It is a top view which shows the cutting pattern deform | transformed according to distortion of the fabric. It is a top view explaining the detection spot of the sensor in the cloth which has a lattice pattern. It is a top view which shows the cutting pattern in the fabric which has another distortion. It is a top view which shows the cutting pattern in another fabric.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  The cutting device according to an embodiment of the present invention is a plotter-type cutting device that cuts fabric and produces a pattern piece of clothing. As shown in FIG. 1, the cutting device 1 includes a cutting table 2, an unwinding device 3, a movement control device 4, a cutter head 25 as a head, and a sensor unit 26 having a sensor.

  The cutting table 2 includes a support surface 21 that supports the fabric 7 as a sheet material, and is configured to cut the fabric 7 along a cutting pattern by a cutting unit 22 driven on the support surface 21. . The cutting table 2 incorporates a belt conveyor that pulls the fabric 7 from the raw fabric 17 toward the other end in the length direction. The belt conveyor is configured by a conveyor belt being stretched between pulleys (not shown) that are built in both ends in the length direction of the cutting table 2 and extend in the width direction perpendicular to the length direction of the cutting table 2. ing. The surface of the upper part of the conveyor belt of this belt conveyor is exposed on the upper surface of the cutting table 2 to form a cut surface 21. The conveyor belt is formed of a moquette-like sheet in which nappings are knitted into a base fabric. The lower blade of the cutter head 25 (described later) sinks into the nap of the moquette-like sheet, and the fabric 7 is scooped up from the back surface, so that the fabric 7 is moved between the lower blade and the rotary blade in contact with the surface of the fabric 7. It is designed to shear effectively. The cutting table 2 has a vacuum pump (not shown) that generates a suction force on the cut surface 21, and can be fixed by adhering the fabric 7 to the cut surface 21 as necessary. A table origin and coordinates used when driving the cutting unit 22 are set on the support surface 21. Hereinafter, the case where the X axis is set in the longitudinal direction of the support surface 21 and the fabric 7 is pulled out from the original fabric 17 and the Y axis is set in the width direction of the support surface 21 will be described.

  The cutting unit 22 includes two carriers 23 and 23 that move in the longitudinal direction (X-axis direction) along both edges in the width direction of the cutting table 2, and a rail 24 that is spanned between the carriers 23 and 23. And a cutter head 25 that moves in the width direction (Y-axis direction) along the rail 24. The cutter head 25 is formed to be movable on the support surface 21 in a direction parallel to the support surface 21 by moving in the Y-axis direction while being driven in the X-axis direction by the carriers 23 and 23.

  The cutter head 25 has a rotary blade that contacts the fabric from the front surface side and a lower blade that contacts the fabric from the back surface side as a cutting portion that cuts the fabric 7. The cloth 7 is cut by the shearing action of the rotary blade and the lower blade. In addition, the cutting part of the cutter head 25 may be one that cuts the fabric 7 by reciprocating a saw-shaped cutter, and various cutting methods according to the type and number of the fabrics 7 can be set.

  As shown in FIG. 2, the sensor unit 26 is attached to the surface of the cutter head 25 that extends in the vertical direction. The sensor unit 26 includes a support rod 27 extending in a direction parallel to the direction in which the fabric 7 is pulled out from the original fabric 17, a first sensor 28 that is movable along the support rod 27 and can be fixed at an arbitrary position, and The second sensor 29 has a first fixing screw 30 and a second fixing screw 31 as fixing portions for fixing the first sensor 28 and the second sensor 29 to the support rod 27, respectively. The support rod 27 extends parallel to the support surface 21 that supports the fabric 7 and at right angles to the rail 24 that guides the movement of the cutter head 25 in the width direction. The first and second sensors 28 and 29 are formed of reflection type optical sensors. This reflective optical sensor is a color sensor that can identify a target color, and includes a light emitting element that emits white light and a light receiving element that receives reflected light formed by reflecting light emitted from the light emitting element by the fabric 7. . The light receiving element has R (red), G (green), and B (blue) filters, and can detect the color of reflected light. By using the first and second sensors 28 and 29, the color of the fabric 7 or the pattern can be identified based on the detection signal.

  FIG. 3 is a plan view showing a state in which the strained fabric 7 is placed on the support surface 21. The fabric 7 has a striped pattern formed of a plurality of stripes extending in parallel to each other in the width direction. The first sensor 28 and the second sensor 29 of the sensor unit 26 are supported by the first fixing screw 30 and the second fixing screw 31 so as to detect two stripes 71 and 72 extending in the width direction of the fabric 7. 27. Specifically, the position of the detection spot 32 to which the light emitted from the light emitting element of the first sensor 28 is irradiated is close to one side of the first stripe 71 and not touching the first stripe 71. As described above, the first sensor 28 is fixed to the support rod 27. On the other hand, the position of the detection spot 33 to which the light emitted from the light emitting element of the second sensor 29 is irradiated is close to the other side of the second stripe 72 and not touching the second stripe 72. In addition, the second sensor 29 is fixed to the support rod 27. Here, the detection spot 32 of the first sensor 28 may be arranged on the other side of the first stripe 71, and the detection spot 33 of the second sensor 29 may be arranged on one side of the second stripe 72. That is, the first sensor 28 and the second sensor 29 may be disposed outside or inside the arrangement direction of the two stripes 71 and 72 at a position where the color of the fabric 7 is first detected. The first stripe 71 detected by the first sensor 28 and the second stripe 72 detected by the second sensor 29 are not limited to those adjacent to each other, and a plurality of stripes may be interposed therebetween. . When the width of the stripe is wide, the detection spot 32 of the first sensor 28 and the detection spot 33 of the second sensor 29 may be arranged on both sides of the stripe at positions close enough not to contact the stripe. Further, the detection spot 32 of the first sensor 28 and the detection spot 33 of the second sensor 29 may be disposed on both sides of the stripe at positions close enough not to contact the fabric. In this case, the movement information calculation unit 43, which will be described in detail later, removes the stripe when one of the detection spots 32, 32 is out of the stripe and the first sensor 28 or the second sensor 29 no longer detects the stripe. For the sensors 28 and 29 that are not detected, movement information that indicates movement in the opposite direction to the sensors 28 and 29 that detect stripes may be output.

  The unwinding device 3 is arranged on the base end side of the cutting table 2, and rotates the original fabric 17 when pulling out the fabric 7 from the original fabric 17. It is formed so that it may guide to the base end part. The fabric 7 whose base end portion is guided to the base end portion of the support surface 21 by the unwinding device 3 is transported to the front end side by the belt conveyor constituting the support surface 21 and is pulled out from the original fabric 17 along with this. The fabric 7 drawn from the original fabric 17 onto the support surface 21 by a length necessary for cutting is cut off from the original fabric 17 by cutting the base end with the cutter of the cutter head 25. Note that a cutter device for separating the fabric 7 from the raw fabric 17 may be separately provided on the base end side of the cutting table 2. In the present embodiment, a case where a single layer of fabric 7 is arranged on the support surface 21 and cutting is described, but a laminate is produced using a spread laminate device for laminating the fabric 7, and this laminate is It may be arranged on the support surface 21 and cut.

  The movement control device 4 performs a pattern reading by the sensor unit 26 and a calculation of information related to the control of the cutting unit 22 for the fabric 7 on the support surface 21 of the cutting table 2. The movement control device 4 is configured by a commercially available notebook PC (personal computer). The movement control device 4 includes a display 41 and displays a cutting pattern for cutting the fabric 7, and displays a distortion pattern of the fabric 7, a cutting pattern deformed in accordance with the distortion of the fabric 7, and the like. To do. The movement control device 4 is connected to a control device (not shown) of the cutting table 2 and exchanges information related to the cutting pattern.

  FIG. 4 is a block diagram showing a cutting table control device 126 that controls the operation of the cutting table 2, the movement control device 4, the cutting unit 22, and the first and second sensors 28 and 29. The cutting table control device 126 includes a marker data input unit 127 to which clothes marker data is input, and a cutting data creation unit 128 that creates cutting data from the marker data. The marker data is composed of information indicating the shape of the pattern piece to be cut from the fabric 7. The cutting data is configured by information that causes the cutting unit to perform cutting in order to produce a pattern piece. The cutting table control device 126 further includes a cutting data adjustment unit 129 as a cutting pattern deforming unit that adjusts cutting data based on the distortion information received from the movement control device 4. Based on the cutting data adjusted by the cutting data adjustment unit 129, the cutting unit control unit 130 drives the cutting unit 22 to cut the fabric 7.

  The cutting table control device 126 is built in the cutting table 2. Further, only the cutting unit control unit 130 of the cutting table control device 126 is built in the cutting table 2, while the marker data input unit 127, the cutting data creation unit 128, and the cutting data adjustment unit 129 of the cutting table control device 126 are provided. You may mount in the computer which comprises the movement control apparatus 4. FIG. Thereby, the process regarding adjustment of cutting data can be integrated and a cutting data processing apparatus can be comprised. By connecting this cutting data processing apparatus to an existing cutting apparatus having only a cutting function, an adjustment function for cutting data corresponding to the distortion of the fabric 7 can be added to the existing cutting apparatus. The marker data input unit 127, the cutting data creation unit 128, the cutting data adjustment unit 129, and the cutting unit control unit 130 of the cutting table control device 126, and the movement information calculation unit 43 and the distortion calculation unit 44 of the movement control device 4 include: Both can be realized by executing software on a computer, but may be realized by a dedicated circuit that exclusively exhibits each function.

  The cutting unit control unit 130 of the cutting table control device 126 drives the cutter head 25 and detects the pattern of the fabric 7 by the sensor unit 26 in cooperation with the movement control device 4 before cutting the fabric 7. Perform pattern detection operation. In the pattern detection operation, the cutting unit control unit 130 moves the cutter head 25 from the one edge in the width direction of the fabric 7, that is, in the Y-axis direction to the other edge based on a command from the movement control device 4. Drive. Here, when the movement information indicating the movement direction is not input from the movement information calculation unit 43, the cutting unit control unit 130 drives the cutter head 25 in the Y-axis direction. On the other hand, when movement information indicating the movement direction is input from the movement information calculation unit 43, the driving is performed in the X-axis direction corresponding to the movement information.

  The movement control device 4 includes a movement information calculation unit 43, a distortion calculation unit 44, an image processing unit 45, and a display 41.

  The movement information calculation unit 43 outputs movement information indicating the direction in which the cutter head 25 should move to the cutting unit control unit 130 based on signals from the first sensor 28 and the second sensor 29 in the pattern detection operation. FIG. 5 is an enlarged view of a part of the fabric 7 of FIG. 3, and shows a direction in which the cutter head 25 is moved when the first sensor 28 detects the first stripe 71. First, as indicated by broken lines, the first spot 32a and the second spot 33a are located on both sides of the first stripe 71 and the second stripe 72, and the first sensor 28 does not detect the first stripe 71 and the second sensor. When 29 does not detect the second stripe 72, the movement information calculation unit 43 does not output movement information to the cutting unit control unit 130. Thereby, the cutting unit control unit 130 drives the cutter head 25 in the Y-axis direction. Thereafter, as indicated by a solid line in FIG. 5, the first spot 32 b intersects the first stripe 71, the first sensor 28 detects the first stripe 71, and the second spot 33 b contacts the second stripe 72. If the second sensor 29 does not detect the second stripes 72, the movement information calculation unit 43 outputs movement information. This movement information is movement information indicating that the cutter head 25 is moved in the direction of arrow A which is the opposite direction to the second sensor 29 with respect to the first sensor 28 that has detected the first stripe 71. When receiving the movement information from the movement information calculation unit 43, the cutting unit control unit 130 drives the cutter head 25 in the direction of the arrow A along the X axis.

  Next, as shown in FIG. 6, when the direction in which the stripes 71, 72 of the fabric 7 are curved is opposite to that in FIG. 5, the moving direction of the cutter head 25 is controlled as follows. First, as shown by a broken line, the first spot 32c and the second spot 33c are located on both sides of the first stripe 71 and the second stripe 72, and the first sensor 28 does not detect the first stripe 71 and the second sensor. When 29 does not detect the second stripe 72, the movement information calculation unit 43 does not output movement information to the cutting unit control unit 130. Thereby, the cutting unit control unit 130 drives the cutter head 25 in the Y-axis direction. Thereafter, as indicated by a solid line in FIG. 6, the second spot 33 d intersects the second stripe 72, the second sensor 29 detects the second stripe 72, and the first spot 32 d contacts the first stripe 71. If the first sensor 28 does not detect the first stripe 71, the movement information calculation unit 43 outputs movement information. This movement information is movement information indicating that the cutter head 25 is moved in the direction of arrow B which is the opposite direction to the first sensor 28 with respect to the second sensor 29 that has detected the second stripes 72. When receiving the movement information from the movement information calculation unit 43, the cutting unit control unit 130 drives the cutter head 25 in the direction of arrow B along the X axis. As described above, the cutting unit control unit 130 drives the cutter head 25 in the X-axis direction according to the movement information from the movement information calculation unit 43, and from one edge of the fabric 7 in the Y-axis direction to the other edge. Drive to the end. Thus, the movement control unit of the present invention is realized by the movement information calculation unit 43 and the cutting unit control unit 130.

  When the cutter head 25 reaches the other edge of the fabric 7 in the Y-axis direction and the pattern detection operation ends, the cutter head 25 moves from one edge of the fabric 7 in the Y-axis direction to the other edge as shown in FIG. Trajectory information indicating the trajectory L up to the edge is output from the cutting unit control unit 130 to the distortion calculation unit 44. In FIG. 7, reference numeral 25a denotes a cutter head located at one edge in the Y-axis direction at the start of the pattern detection operation, and reference numeral 25b denotes a cutter head located at the other edge in the Y-axis direction at the end of the pattern detection operation. Show. The strain calculation unit 44 generates strain information related to the strain of the fabric 7 based on the trajectory information of the cutter head 25. The distortion calculation unit 44 converts the coordinate values of the stripes 71 and 72 when there is no distortion into the coordinate values of the locus L, assuming that the locus L of the cutter head 25 indicates the distortion of the fabric 7 appearing in the stripes 71 and 72. The parameter for performing is calculated, and this parameter is output as distortion information. In addition, when the pattern read by the sensor unit 26 is not a linear stripe but a curve or a zigzag shape, the coordinate values of these patterns are input in advance, and the coordinate values are the coordinate values of the locus L of the cutter head 25. The parameters to be converted into the distortion may be calculated by the distortion calculation unit 44. The distortion calculation unit 44 outputs the distortion information to the cutting data adjustment unit 129 of the cutting table control device 126.

  The cutting data adjustment unit 129 adjusts the cutting data based on the distortion information input from the movement control device 4. Specifically, coordinate conversion of the cutting data is performed using the distortion information parameter, and the cutting data is made to correspond to the distortion of the fabric 7. The cutting data adjusted by the cutting data adjustment unit 129 is output to the cutting unit control unit 130 and the image processing unit 45 of the movement control device 4.

  The image processing unit 45 of the movement control apparatus 4 receives cutting data before adjustment from the cutting data creation unit 128 and receives cutting data after adjustment from the cutting data adjustment unit 129. The image processing unit 45 displays the cutting pattern based on the cutting data before adjustment and the cutting pattern based on the cutting data after adjustment on the display 41, and cuts the normal shape of the pattern piece and the cloth 7 having distortion. Let the operator visually recognize the shape to execute.

  The cutting unit control unit 130 that has received the cutting data from the cutting data adjustment unit 129 drives the cutting unit 22 based on the adjusted cutting data and performs cutting of the fabric 7. FIG. 8 is a diagram showing cutting patterns 75 and 76 of cutting data that are not distorted in the fabric 7 and that are not adjusted by the cutting data adjustment unit 129. FIG. 9 is a diagram showing the cutting patterns 75 and 76 of the cutting data adjusted by the cutting data adjustment unit 129 corresponding to the distortion of the fabric 7 having distortion. The cutting patterns 75 and 76 have a shape that is cut by the cutter head 25 based on the cutting data. As apparent from FIG. 9, the cutting patterns 75 and 76 are compared with the cutting patterns 75 and 76 of FIG. 8 so as to follow the shapes of the first stripe 71 and the second stripe 72 read by the sensor unit 26. The central portion in the axial direction is adjusted to a shape shifted in the X-axis direction from both side portions. Thus, the pattern piece of the shape adjusted according to the distortion of the fabric 7 by cutting the fabric 7 along the cutting patterns 75 and 76 that are deformed and adjusted corresponding to the pattern of the fabric 7. Is created. The created pattern piece is cut off from the other part of the fabric 7, thereby eliminating the tension that caused the fabric 7 to be distorted. Thereby, the pattern piece of the shape corresponding to the cutting pattern 75 and 76 of the appropriate shape before adjustment is obtained.

  In the above embodiment, the fabric 7 having a striped pattern as a pattern is applied. However, it can also be applied to a fabric having a lattice pattern as a pattern. FIG. 10 is an enlarged plan view showing a part of the fabric having a lattice pattern. As shown in FIG. 10, the fabric 107 has an X axis orthogonal to the first and second stripes 71 and 72 when the first and second stripes 71 and 72 of the fabric 7 shown in FIG. It has a lattice pattern with cross stripes 73 extending in the direction. In the pattern detection operation for detecting the pattern of the fabric 107, the first spot 32 and the second spot 33 are positioned on both sides of the first stripe 71 and the second stripe 72, and the first sensor 28 is set to the first stripe 71. When the second sensor 29 does not detect the second stripe 72, the cutting unit control unit 130 drives the cutter head 25 in the Y-axis direction. When the cutter head 25 advances in the Y-axis direction, the first spot 32 and the second spot 33 are simultaneously in contact with the cross stripes 73 that are substantially orthogonal to the first and second stripes 71 and 72, and the first sensor 28 A detection signal is simultaneously output from the second sensor 29. When the movement information calculation unit 43 receives the detection signals from the first sensor 28 and the second sensor 29 at the same time, the movement information calculation unit 43 determines that the cross stripes 73 that are not substantially affected by the distortion of the fabric 107 are detected, and the movement information is obtained. Do not output. Thus, by generating movement information based only on the first stripe 71 and the second stripe 72 that are affected by the distortion of the fabric 107, even if it is a lattice pattern, the pattern can be detected appropriately and the distortion of the fabric 107 can be detected. Distortion information can be generated. In addition, when the color of the cross stripe 73 is different from the colors of the first stripe 71 and the second stripe 72, the movement information calculation unit 43 excludes the detection signal of the color of the cross stripe 73, and the first stripe 71 and the first stripe 71 The movement information may be generated based on the detection signal of the color of the two stripes 72. In this way, the color of the pattern to be detected is designated in advance, and the movement information is generated by the movement information calculation unit based on the detection information corresponding to the designated color among the detection signals of the sensor, thereby causing the fabric distortion. Can be detected with high accuracy.

  Moreover, in the said embodiment, although the case where the fabric 7 which has the distortion which the center part of the Y-axis direction shifted | deviated to the X-axis direction rather than the both-sides part was demonstrated, the cloth 207 which has another distortion may be cut | disconnected. it can. FIG. 11 is a plan view showing a state in which the cutting patterns 75 and 76 are adjusted with respect to the fabric 207 that is shifted in the X-axis direction at a uniform rate as it goes in the Y-axis direction. As shown in FIG. 11, when the sensor unit 26 detects the first stripe 71 and the second stripe 72 that are linearly inclined, the cutting patterns 75 and 76 are changed to Y based on the movement trajectory of the sensor unit 26. Adjustments can be made to shift in the X-axis direction at a uniform rate as it goes in the axial direction.

  In the manufacturing process of the raw fabric 17, there is one in which the entire weave or mesh of the fabric is wound in an inclined state. As shown in FIG. 12, in the fabric 307 drawn from the original fabric 7, the extending directions of the warp and weft of the weave or mesh remain at right angles to each other, have no distortion, and the fabric 307 The outline of is a rectangle. Regarding the fabric 307, the movement control device 4 uses the diagram of the fabric 307 based on the locus L of the cutter head 25 along the first stripe 71 and the second stripe 72 detected by the first and second sensors 28 and 29. The angle with respect to the vertical side in 12 is calculated. The rotation angle calculated by the movement control device 4 is input to the cutting table control device 126, and the cutting data of the cutting patterns 75 and 76 is rotated by the rotation angle around the axis orthogonal to the XY plane, and the cutting unit control unit 130. The cutting unit control unit 130 performs cutting by controlling the cutting unit 22 based on the input cutting data. Thereby, as shown in FIG. 12, the pattern piece of the cutting patterns 75 and 76 inclined along the 1st stripe 71 and the 2nd stripe 72 is obtained.

  In the above embodiment, the reflection type photosensor is used as a sensor for detecting the pattern of the fabric, but an image sensor may be used. As the image sensor, a line sensor in which image pickup elements are arranged in a straight line or an area sensor in which image pickup elements are arranged in a matrix in a matrix can be used. When the line sensor is used, the image sensor is attached to the cutter head 25 so as to be aligned in the X-axis direction, and the cutter head 25 is driven in the Y-axis direction while imaging at least one stripe of the fabric 7 in FIG. At this time, the cutter head 25 is driven along the stripes by adjusting the position of the cutter head 25 in the X-axis direction so that the image pickup devices that detect the stripes are the same among the image pickup devices arranged in the X-axis direction. be able to. When an area sensor is used, the image pickup devices are attached to the cutter head 25 so as to be arranged in a matrix in the X-axis and Y-axis directions, and the cutter head 25 is moved while imaging at least one of the stripes of the fabric 7 in FIG. Drive in the Y-axis direction. At this time, among the image sensors arranged in a matrix, the cutter head 25 is driven along the stripes by adjusting the position of the cutter head 25 in the X-axis direction so that the center image sensor always detects the stripes. Can do.

  In the embodiment described above, the cutting pattern before and after adjustment by the cutting data adjustment unit 129 is displayed on the display 41 of the movement control device 4. However, the cutting pattern is displayed on the cloth 7 on the support surface 21 by the irradiation unit. May be. The irradiation unit can be realized by a projector installed above the cutting table 2. The cutting patterns 75 and 76 adjusted by the cutting data adjustment unit 129 are displayed on the surface of the fabric 7 by the projector, so that the shape of the adjusted cutting patterns 75 and 76 is adapted to the distortion of the fabric 7 or not. Can be confirmed visually. Here, it is preferable that the cutting apparatus 1 includes an arrangement changing unit that changes the arrangement state of the cutting patterns 75 and 76 adjusted by the cutting data adjusting unit 129 in the fabric 7. The arrangement state of the cutting patterns 75 and 76 changed by the arrangement changing unit is the X-axis and Y-axis direction positions and the rotation angle around the axis orthogonal to the XY plane. By changing the arrangement state of the cutting patterns 75 and 76 adjusted by the cutting data adjusting unit 129 using the arrangement changing unit, it is possible to obtain a pattern piece by cutting an appropriate position of the fabric 7 having distortion. Thereby, the pattern matching of the pattern piece obtained by cutting along the cutting patterns 75 and 76, and the cutting which avoided the defective part of the fabric 7 can be performed.

  In the above embodiment, the sensor unit 26 is disposed on the cutter head 25 of the cutting unit 22. However, a sensor head that moves on the support surface 21 in a direction parallel to the support surface 21 is provided separately, and the sensor unit 26 is attached to the sensor head. May be installed.

  Moreover, in the said embodiment, although the striped pattern and lattice pattern as a pattern of the fabric 7 were detected with the reflection type optical sensor, the unevenness | corrugation formed by a weave or a weave as a pattern of the fabric 7 was detected with a reflection type optical sensor or a laser photoelectric sensor. You may detect with a sensor, an image sensor, etc.

  Moreover, in the said embodiment, although the cutting device 1 cut | disconnected the cloth 7 as a sheet material, you may cut | disconnect other sheet materials, such as a film.

DESCRIPTION OF SYMBOLS 1 Cutting device 2 Cutting table 3 Unwinding device 4 Movement control device 7 Cloth 21 Support surface 22 Cutting unit 25 Cutter head 26 Sensor unit 28 1st sensor 29 2nd sensor 41 Display 43 Movement information calculating part 44 Distortion calculating part 45 Image processing Unit 71 First stripe 72 Second stripe 75, 76 Cutting pattern 126 Cutting table control device 127 Marker data input unit 128 Cutting data creation unit 129 Cutting data adjustment unit

Claims (7)

A cutting table having a support surface for supporting the sheet material;
A head that moves in a planar direction on the support surface;
A sensor installed on the head for detecting the pattern of the sheet material;
Based on the detection signal of the sensor, a movement control unit that moves the head along the pattern of the sheet material,
A cutting pattern deforming portion that deforms the shape of the cutting pattern based on the trajectory of the movement of the head,
A cutting apparatus comprising: a cutting unit that cuts the sheet material along the cutting pattern deformed by the cutting pattern deforming unit. The cutting apparatus according to claim 1,
The cutting apparatus according to claim 1, wherein the sensor is a reflective optical sensor. The cutting device according to claim 2,
Two sensors are provided,
The movement control unit is configured to move the head to a side opposite to a side where the other sensor is located with respect to the one sensor when an output value from the one sensor is changed. apparatus. In the cutting device according to claim 3,
The sheet material is drawn from the roll wound into a roll,
2. The cutting apparatus according to claim 2, wherein the two sensors are formed such that their positions can be adjusted in a direction parallel to a direction in which the sheet material is drawn from the original fabric. The cutting apparatus according to claim 1,
The cutting apparatus according to claim 1, wherein the head is a cutter head provided with the cutting portion. The cutting apparatus according to claim 1,
The cutting device, wherein the sensor is an image sensor. The cutting apparatus according to claim 1,
A cutting apparatus comprising: an irradiation unit configured to irradiate the surface of the sheet material with the shape of the cutting pattern deformed by the cutting pattern deformation unit.

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