JP2013208204A - Sewing data editing device and sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewing data editing device for generating sewing data which does not cause positional deviation even when enlarging or reducing each of a plurality of patterns to be formed on a sewing object, and provide a sewing machine.SOLUTION: A CPU captures an image of a presser frame including a plurality of openings (S15), detects the inner edges of the openings by image processing (S17) and displays a plurality of enclosed areas on a display unit (S19). An operator activates enclosed areas each including a pattern desired to be enlarged or reduced. The CPU designates the active enclosed areas as specific areas (S25) and sets the center position of each specific area as a reference position in each specific area for enlargement or reduction (S27). The CPU reads sewing data (S31) and enlarges or reduces stitch data having needle location points in each specific area by using the reference position as a reference (S33: YES, S37). The CPU generates sewing data which enables sewing of a plurality of patterns each enlarged or reduced by using the reference position corresponding to each of the plurality of patterns as the reference without influence on a positional relationship.

Description

  The present invention relates to a sewing data editing apparatus and a sewing machine for editing sewing data indicating a needle drop point for sewing a pattern onto a sewing object.

  There is a sewing machine that sews a pattern on a sewing object in accordance with sewing data indicating a needle entry point. The needle drop point is a predetermined position on the sewing object at which the sewing needle of the sewing machine descends and pierces the sewing object (work cloth or the like). The sewing data is data in which a large number of needle drop points for sewing a pattern are arranged in the sewing order. The sewing data includes actual sewing data for forming a pattern with stitches and pre-feed data for changing the relative position of the sewing object with respect to the sewing needle without forming the stitches.

  There is a sewing machine that can be sewn by enlarging or reducing a pattern formed on a sewing object. For example, the sewing machine disclosed in Patent Document 1 enlarges / reduces actual sewing data in the sewing data, and sews a pattern on the sewing object moved to a position based on the pre-feed data. The sewing machine can form the pattern after enlargement / reduction at the planned formation position of the pattern before enlargement / reduction by removing the pre-feed data from the enlargement / reduction object. The sewing machine performs pattern enlargement / reduction using a standard origin unique to the sewing machine, a sewing start point different from the standard origin, and the like as reference points for enlargement / reduction. The sewing machine disclosed in Patent Document 1 is used to sew a pattern for chrysanthemum hole stitching, and if a reference point is overlapped and enlarged at the drilling position in the pattern, the portion located at the reference point is not displaced even after enlargement / reduction.

JP 7-328257 A

  Since one piece of sewing data scales the pattern based on one reference point, when sewing a plurality of patterns with the sewing machine of Patent Document 1, the pattern in which the reference point is overlapped at the drilling position is not displaced. Since the pattern is enlarged or reduced based on different reference points, the pattern may be displaced. When an operator sew a plurality of patterns on a single sewing object, it is necessary to edit different enlargement / reduction sewing data for each pattern, which is troublesome.

  An object of the present invention is to provide a sewing data editing device and a sewing machine that generate sewing data that does not cause a positional shift even if a plurality of patterns formed on a sewing object are enlarged or reduced.

  The sewing data editing device according to claim 1 is a sewing data editing device that edits sewing data for forming a pattern on a sewing object, and includes a holding member that holds the sewing object when the pattern is formed. Designating means for designating a specific area, which is a plurality of specific areas on the sewing object as a reference, and a plurality of needle drop points in each of the specific areas designated by the designating means based on the sewing data Acquisition means for acquiring each part as a target pattern, setting means for setting a reference position, which is a reference position when enlarging or reducing the plurality of target patterns acquired by the acquisition means, A generator that edits sewing data and generates enlarged / reduced sewing data for forming an enlarged / reduced pattern obtained by enlarging or reducing a plurality of the target patterns based on the reference position set by the setting means. , Characterized in that it is provided with a, and.

  The sewing data editing device can generate sewing data that can sew an enlarged / reduced pattern without changing the positional relationship between a plurality of patterns. Therefore, the operator does not need to create different sewing data every time the size of the pattern to be formed on the sewing object is different, and labor is not required. If the sewing machine has one piece of sewing data, it can easily sew patterns that have been enlarged or reduced in accordance with various sizes of the sewing object.

  3. The sewing data editing apparatus according to claim 2, wherein the setting means sets a center position of the specific area as the reference position. If the center position is set as the reference position in each of the plurality of specific areas, the operator can save the trouble of setting the reference position in each of the plurality of specific areas.

  4. The sewing data editing apparatus according to claim 3, wherein the target pattern is enlarged or reduced by the setting means at the same rate for all the target patterns. Since a plurality of target patterns can be enlarged or reduced at the same rate, the operator does not need to set an enlargement rate or a reduction rate for each target pattern, thereby saving labor.

  The sewing data editing apparatus according to claim 4, wherein the holding member is a presser frame having an opening, and the sewing unit includes a photographing unit that photographs the presser frame and the opening of the presser frame photographed by the photographing unit. Detecting means for detecting an enclosing area surrounding the object, wherein the designating means designates the enclosing area detected by the detecting means as the specific area. Since the surrounding area to be detected based on the captured image can be designated as the specific area, the operator does not need to designate the specific area by a human operation, and can save labor.

  The sewing data editing apparatus according to claim 5, further comprising: display means for displaying an image photographed by the photographing means; and determination means for determining an arbitrary area in the image displayed by the display means, The designating means designates the area determined by the determining means as the specific area. The operator can determine an arbitrary area while looking at the captured image and designate it as a specific area. Therefore, if the area is determined so that a pattern that does not need to be scaled out of the specific area, only the desired pattern can be obtained. Can be scaled.

  The sewing data editing apparatus according to claim 6, wherein the sewing data editing apparatus overlaps the image displayed on the display means and draws a plurality of the target patterns based on the sewing data, and the target pattern drawn by the drawing means. Selecting means capable of selecting whether to enlarge or reduce the image, and the generating means forms the enlarged / reduced pattern with respect to the target pattern selected to be enlarged or reduced by the selecting means. For this purpose, the enlargement / reduction sewing data is generated. The operator can select the target pattern to be scaled while looking at the target pattern drawn over the captured image, so that only the desired pattern can be reliably scaled.

  A sewing machine according to a seventh aspect includes a sewing data editing device according to any one of the first to sixth aspects, a moving mechanism that holds the holding member and moves the holding member in a horizontal plane, and the sewing data editing device. Sewing means for controlling the moving mechanism in accordance with the edited enlargement / reduction sewing data and sewing the enlargement / reduction pattern on the sewing object. The sewing machine can sew an enlarged / reduced pattern according to the enlarged / reduced sewing data edited by the sewing data editing device. Therefore, the operator does not need to create different sewing data every time the size of the pattern to be formed on the sewing object is different, and labor is not required. If the sewing machine has one piece of sewing data, it can easily sew patterns that have been enlarged or reduced in accordance with various sizes of the sewing object.

1 is a perspective view of a sewing machine 1. FIG. It is a figure which shows a mode that the patterns 151-153 based on the sewing data 180 were sewn on the work cloth 150 which the holding body 60 hold | maintains. 2 is a block diagram showing an electrical configuration of the sewing machine 1. FIG. 4 is a diagram showing a conceptual configuration for explaining sewing data 180. FIG. It is a flowchart of a sewing data edit process. It is a figure which shows a mode that surrounding area A1-A3 was displayed on the display 81. FIG. It is a figure which shows the notional structure for demonstrating the expansion / contraction sewing data 280. FIG. It is a figure which shows a mode that the patterns 251, 152, 253 based on the expansion / contraction sewing data 280 were sewn on the work cloth 150 which the holding body 60 hold | maintains.

  Hereinafter, a sewing machine 1 according to an embodiment of the present invention will be described with reference to the drawings. 1 are a front side, a rear side, a left side, and a right side of the sewing machine 1, respectively.

  The overall structure of the sewing machine 1 will be described with reference to FIGS. As shown in FIG. 1, the sewing machine 1 includes a bed portion 2, a pedestal column portion 3, and an arm portion 4. The bed unit 2 is placed on the table 95. The bed portion 2 extends in the front-rear direction and includes a vertical hook (not shown) and the like inside. The pedestal part 3 extends vertically upward from the rear side of the bed part 2. The pedestal 3 includes a sewing machine motor 112 (see FIG. 3) and the like. The arm portion 4 extends forward from the upper side of the pillar portion 3 so as to face the upper surface of the bed portion 2, and includes a head portion 7 at the front end. The arm unit 4 includes a main shaft, a needle bar drive mechanism (not shown), and the like. The needle bar 10 extends downward from the lower end of the head 7. The sewing needle 11 is attached to the lower end of the needle bar 10.

  The sewing machine 1 includes a work table 5 and a transfer device 6 above the bed portion 2. The work table 5 includes a needle plate 55. The needle plate 55 has a needle hole (not shown) through which the sewing needle 11 can be inserted at a position immediately below the sewing needle 11 attached to the needle bar 10. The transfer device 6 includes a transfer plate 61, an elevating / lowering unit 62, a presser frame 63, a transfer plate holding unit 64, an X-axis moving mechanism (not shown), an arm unit 65, and a Y-axis moving mechanism (not shown).

  The transfer plate 61 is a plate member arranged in the horizontal direction and has an opening having substantially the same shape as a presser frame 63 described later. The transfer plate holding part 64 extends in the left-right direction, and supports the transfer plate 61 so as to be movable in the X-axis direction (left-right direction). The X-axis moving mechanism is provided inside the bed portion 2. The X-axis moving mechanism moves the transfer plate 61 in the X-axis direction (left-right direction) using the X-axis motor 114 (see FIG. 3) as a drive source. The arm portion 65 connected to the transfer plate holding portion 64 is connected to a Y-axis moving mechanism provided in the pedestal column portion 3. The Y-axis moving mechanism moves the arm portion 65 in the Y-axis direction (front-rear direction) using the Y-axis motor 116 (see FIG. 3) as a drive source. The transfer plate holding part 64 moves in the Y-axis direction (front-rear direction) as the arm part 65 moves.

  The transfer plate 61 supported by the transfer plate holding unit 64 moves together with the transfer plate holding unit 64. The transfer plate holding part 64 supports the elevating part 62 so that it can be elevated. The presser frame 63 is a frame-shaped plate member connected to the lower end of the elevating part 62. As shown in FIG. 2, the presser frame 63 has three openings 67, 68 and 69. The openings 67 to 69 are arranged in the left-right direction of the presser frame 63 and penetrate in the up-down direction. The opening 68 is located at the center of the presser frame 63 and has a shape in which both the left and right sides of the circle are recessed into the opening. The openings 67 and 69 are located on the left and right of the opening 68, respectively, and have a substantially circular shape. The openings 67 to 69 of the presser frame 63 have substantially the same shape as the openings (see FIG. 1) of the transfer plate 61. The operator places a sewing object (for example, the work cloth 150) on the transfer plate 61. When the elevating part 62 moves downward, the presser frame 63 descends. The presser frame 63 and the transfer plate 61 hold the work cloth 150 from above and below. Hereinafter, the transfer plate 61 and the presser frame 63 are collectively referred to as a holding body 60.

  As shown in FIG. 1, the sewing machine 1 includes an operation panel 8 at the tip of a column 9 that stands on a table 95. The operation panel 8 includes a touch panel 82 for inputting various information and various instructions, and a display 81 for displaying information. The display 81 displays a captured image taken by an image sensor 50 described later, displays various information related to the operation of the sewing machine 1, displays a virtual operation key, and the like. The touch panel 82 is pressure-sensitive in this embodiment, and detects a position touched by an operator with the stylus pen 85, a finger, or the like. The touch panel 82 is disposed so as to overlap the display 81.

  The sewing machine 1 includes a control box 110 that houses the control device 100 (see FIG. 3) below the table 95. The operation panel 8 is connected to the control device 100 via a cable (not shown) passed through the support 9. The sewing machine 1 includes a foot switch 90 below the table 95. The foot switch 90 is a pedal type switch that is connected to the control device 100 with a cord. The operator depresses the foot switch 90 when starting various operations of the sewing machine 1 (for example, driving the sewing machine motor 112, raising and lowering the presser frame 63, etc.).

  The sewing machine 1 includes an image sensor 50 on the lower end side in the head 7. The image sensor 50 is fixed to a support portion 51 provided on a frame (not shown) of the sewing machine 1. The image sensor 50 is a well-known CMOS (Complementary Metal Oxide Semiconductor) and outputs image data of a captured image. The lens (not shown) of the image sensor 50 faces the direction in which the holding body 60 of the transfer device 6 can be photographed. The photographing range of the image sensor 50 is a range in which the inside of the openings 67 to 69 can be photographed including the edges of the openings 67 to 69 of the presser frame 63 of the holding body 60.

  The electrical configuration of the sewing machine 1 will be described with reference to FIG. As shown in FIG. 3, the control device 100 of the sewing machine 1 includes a CPU 101, a ROM 102, a RAM 103, a nonvolatile memory 104, an input / output interface (I / F) 106, drive circuits 113, 115, 117, and a memory drive 107. The CPU 101, ROM 102, RAM 103, and nonvolatile memory 104 are electrically connected to the input / output I / F 106 via the bus 105. The CPU 101 controls the sewing machine 1 and executes various calculations and processes related to sewing according to various programs stored in the ROM 102. The ROM 102 stores an identification number unique to the sewing machine 1, various programs, various initial setting parameters, and the like. The RAM 103 temporarily stores calculation results of the CPU 101, flags, pointers, counters, and the like. The nonvolatile memory 104 stores sewing data introduced by a sewing data manager via a memory card (not shown) such as a compact flash (registered trademark), various setting information input by an operator, and the like. Sewing data will be described later.

  The memory drive 107 is electrically connected to the input / output I / F 106. The memory drive 107 reads data from a memory card (not shown) and writes data to the memory card. The operator uses sewing data including a combination of different stitch data (described later) depending on the sewing object. The nonvolatile memory 104 stores unique sewing data created by the sewing data manager. The administrator can create the sewing data with a PC or the like and introduce it into the sewing machine 1 via a memory card.

  The drive circuits 113, 115, and 117 are electrically connected to the input / output I / F 106. The drive circuit 113 is electrically connected to the sewing machine motor 112. The CPU 101 controls the sewing machine motor 112 via the drive circuit 113. The sewing machine motor 112 rotationally drives a main shaft (not shown). The drive circuit 115 is electrically connected to the X-axis motor 114. The drive circuit 117 is electrically connected to the Y-axis motor 116. The CPU 101 controls the X-axis motor 114 and the Y-axis motor 116 via the drive circuits 115 and 117. Both the X-axis motor 114 and the Y-axis motor 116 are pulse motors. The X-axis motor 114 and the Y-axis motor 116 move the holding body 60 in the X-axis direction and the Y-axis direction by driving an X-axis movement mechanism (not shown) and a Y-axis movement mechanism (not shown), respectively. The CPU 101 controls the vertical movement of the needle bar 10 and the rotation of the vertical hook (not shown) by driving the sewing machine motor 112 based on the sewing data and rotationally driving the spindle during sewing. The CPU 101 controls the position of the holding body 60 by driving the X-axis motor 114 and the Y-axis motor 116 based on the sewing data simultaneously with the driving of the sewing machine motor 112. The sewing machine 1 performs sewing on the sewing object by this operation.

  The operation panel 8 and the foot switch 90 are electrically connected to the input / output I / F 106 of the control device 100, respectively. The foot switch 90 is as described above. The operation panel 8 includes a display 81, a touch panel 82, and the like. The CPU 101 associates the position touched by the operator with the touch panel 82 and the pixels constituting the image displayed on the display 81. Therefore, when the worker inputs information or instructions, the CPU 101 displays a virtual key or the like on the display 81, for example, and identifies the virtual key operated by the worker based on the contact position of the worker detected by the touch panel 82. The image sensor 50 is electrically connected to the input / output I / F 106. The image sensor 50 is as described above.

  The sewing data 180, which is an example of the sewing data of the present embodiment, will be described with reference to FIGS. As shown in FIG. 4, the sewing data 180 is an aggregate of 251 data used when the patterns 151, 152, 153 (see FIG. 2) are formed on the work cloth 150 (see FIG. 2) with stitches. As shown in FIG. 2, the sewing machine 1 sews patterns 151 to 153 on the work cloth 150 exposed in the three openings 67 to 69 of the presser frame 63 of the holding body 60. The patterns 151 and 153 of the present embodiment are, for example, patterns formed by stitching the dressing cloths 157 and 159 that reinforce the attachment position of the handle that is attached to the heel, and are configured by double lines sandwiching the idle feed. ing. The pattern 152 is a pattern that is formed, for example, when the tag 158 that displays the brand name is sewn together.

  As shown in FIG. 4, each piece of data included in the sewing data 180 includes a rank 181 indicating the order in which the CPU 101 reads the data, and instruction information 182 including sewing data types, various settings, instruction values, and the like. The sewing data 180 includes one or more stitch data 171, 172, 173, 174, 175, blank feed data 191, 192, 193, 194, 195, origin movement data 185, and control data 189.

  The instruction information 182 of the stitch data 171 to 175 is data indicating a plurality of needle drop points for sewing the patterns 151 to 153 by relative positions between the position of the sewing needle 11 and the position of the holding body 60 (see FIG. 1). It is. The needle drop point is a predetermined position on the sewing object (work cloth 150) where the sewing needle 11 sticks when the sewing needle 11 moves downward together with the needle bar 10. The needle drop point is indicated by coordinate data in the X, Y coordinate system set for the holding body 60. The coordinate data indicates, in relative coordinates, the direction and distance of the current needle drop point with respect to the previous needle drop point in the data reading order. The stitch data 171 to 175 is data in which coordinate data of a large number of needle drop points for sewing the patterns 151 to 153 with stitches are arranged in the sewing order.

  The instruction information 182 of the idle feed data 191 to 195 is data for changing the relative position of the work cloth 150 with respect to the sewing needle 11 by moving the holding body 60 without forming a stitch. The pre-feed data 192 is used when moving to the formation position of the inner line after forming the outer line of the pattern 151. The pre-feed data 195 is used when the outer line of the pattern 153 is formed and then moved to the inner line forming position. The pre-feed data 191, 193, 194 is used when the holder 60 is moved to each pattern forming position in order to form a plurality of patterns 151-153 on the work cloth 150. Similarly to the above, the idle feed data 191 to 195 are indicated by coordinate data of coordinates of the movement destination relative to the coordinates of the movement source.

  The instruction information 182 of the origin movement data 185 is data indicating the position to move the holding body 60 as an absolute position with respect to the sewing needle 11. The origin movement data 185 is used when the holder 60 is moved to the origin position O (for example, the center of the presser frame 63). The instruction information 182 of the control data 189 is data indicating an instruction related to control of the operation of the sewing machine 1. The control data 189 includes, for example, a “standby” instruction used when waiting for a sewing object to be attached and detached and a sewing start operation, a “thread trimming” instruction to cut a thread before skipping or at the end of sewing, This is used when performing an “end” instruction or the like for instructing the end of the operation. The sewing data 180 includes intermittent presser data that instructs the operation of the presser bar (not shown), thread color data that indicates the color of the thread, sewing speed data that indicates the speed of the vertical movement of the needle bar 10, and the like. Data for indicating various necessary parameters may be included.

  An example in which the CPU 101 of the sewing machine 1 performs sewing according to the sewing data 180 will be described with reference to FIGS. The CPU 101 moves the holding body 60 so that the position of the sewing needle 11 comes to the origin position O in accordance with the instruction information 182 whose rank 181 indicated by the origin movement data 185 of the sewing data 180 is “0”. The holding body 60 moves when the CPU 101 controls the driving of the X-axis motor 114 and the Y-axis motor 116 according to the instruction information 182. The CPU 101 moves the holding body 60 from the origin position O to the position (X, Y) = (− 100, 10) in accordance with the instruction information 182 whose rank 181 indicated by the pre-feed data 191 is “1”. This position is the first needle drop point N1 in the sewing of the pattern 151. The CPU 101 temporarily stops the operation of the holding body 60 and waits for a sewing start operation in accordance with the instruction information 182 in which the rank 181 indicated by the control data 186 is “2”.

  When the sewing start operation is performed, the CPU 101 moves the holder 60 relative to the needle drop point N1 (X, Y) = (2.5) according to the instruction information 182 in which the rank 181 indicated by the stitch data 171 is “3”. , 0), and the next needle drop point N3 is arranged immediately below the sewing needle 11. When the needle bar 10 moves up and down by the rotation of the main shaft driven by the sewing machine motor 112, the sewing needle 11 is pierced at the needle drop point in accordance with the movement of the holding body 60, and forms a stitch between the needle drop points N1 and N3. Similarly, the CPU 101 repeats this operation in accordance with the instruction information 182 in which the rank 181 indicated by the stitch data 171 is “4” to “51”, and sews the outer line of the pattern 151 on the work cloth 150.

  The CPU 101 performs thread trimming in accordance with the instruction information 182 whose rank 181 indicated by the control data 189 is “52”. The CPU 101 follows (X, Y) = (5, −5) relative to the last needle drop point N51 of the line outside the pattern 151 in accordance with the instruction information 182 in which the rank 181 indicated by the blank feed data 192 is “53”. Move to the position. This position is the first needle drop point N53 in the sewing of the line inside the pattern 151. The CPU 101 forms stitches connecting the needle drop points according to the instruction information 182 whose rank 181 indicated by the stitch data 172 is “54” to “87”, and sews the inner line of the pattern 151 on the work cloth 150.

  The CPU 101 moves to the position of (X, Y) = (60, −30) relative to the last needle drop point N87 of the pattern 151 in accordance with the instruction information 182 whose rank 181 indicated by the pre-feed data 193 is “89”. To do. This position is the first needle drop point N89 in the sewing of the pattern 152. The CPU 101 forms stitches that connect the needle drop points according to the instruction information 182 in which the rank 181 indicated by the stitch data 173 is “90” to “161”, and sews the pattern 152 on the work cloth 150.

  Similarly to the above, the CPU 101 forms the pattern 153 on the work cloth 150 and, when reaching the final needle drop point N248, performs thread trimming according to the control data 189. The CPU 101 ends the sewing of the patterns 151 to 153 based on the sewing data 180 because the instruction information 182 whose rank 181 indicated by the control data 188 is “250” is “END”.

  The CPU 101 returns the rank 181 to “0” for the next sewing, moves to the standby position according to the instruction information 182 in which the rank 181 of the sewing data 180 is “0” to “2”, and performs a sewing start operation. Wait for.

  In the sewing data editing process described later, the image sensor 50 photographs the presser frame 63 of the holding body 60. The CPU 101 performs known image processing on the photographed image, and detects inner edges (inner edges) of the openings 67 to 69 of the presser frame 63. Examples of image processing include, for example, known color extraction processing, binarization processing, and expansion / contraction processing. In the color extraction process, the color of the presser frame 63 is set in advance or designated by the operator, so that the sewing object shown in the photographed image can be made transparent and the presser frame 63 can be extracted. In the binarization process, the pixel of the part of the presser frame 63 that appears in the captured image can be distinguished from the pixel of the part other than the presser frame 63. The expansion / contraction processing can remove isolated pixels from the surrounding pixel group, and can remove noise, small protrusions, small chips, and the like generated in the portion of the presser frame 63 shown in the photographed image. In the expansion / contraction process, when the annular presser frame 63 has, for example, a ring opening portion, the ring opening portion can be filled.

  The image sensor 50 adjusts and fixes the shooting direction and the angle of view in advance. Therefore, the sewing machine 1 associates each pixel constituting the captured image of the image sensor 50 with the position indicated by the coordinate data of the sewing data in advance. In the sewing data editing process described later, the CPU 101 displays a captured image on the display 81 of the operation panel 8. As described above, the CPU 101 can associate the position touched by the operator with the stylus pen 85 or the like on the touch panel 82 with the pixels constituting the image displayed on the display 81. Therefore, the CPU 101 can associate the position touched by the operator on the captured image displayed on the display 81 with the coordinates of the absolute position with respect to the sewing needle 11.

  The administrator of the sewing data may want to change the size of the pattern to be sewn because the types of patterns to be sewn on the sewing object are the same. In this case, for example, it is necessary to change the size of the reinforcing addressing cloths 157 and 159 attached to the heel. In the sewing machine 1 of the present embodiment, the CPU 101 executes sewing data editing processing, which will be described later, so that the sewing data is conventionally created every time the size of the pattern is changed, and the scale of the corresponding pattern can be reduced. One sewing data can be used.

  The sewing data editing process of the sewing machine 1 will be described with reference to FIGS. In this embodiment, the size of the patterns 151 and 153 formed by sewing the addressing cloths 157 and 159 is changed in accordance with the change in the size of the addressing cloths 157 and 159 sewn on the work cloth 150 shown in FIG. The description will be made taking as an example a case where the size of the pattern 152 formed by enlarging and sewing the tag 158 is not changed. The sewing data 180 is introduced into the sewing machine 1 by the administrator via the memory card, and is stored in the nonvolatile memory 104. The CPU 101 uses variables such as various flags, counters, and read pointers in the sewing data editing process. The reading pointer is a pointer for designating a reading position (address) of sewing data.

  The sewing data editing process shown in FIG. 5 is executed by the CPU 101 reading a program from the ROM 102 when the operator turns on a power switch (not shown) of the sewing machine 1. The CPU 101 executes sewing data editing processing in parallel with other control programs stored in the ROM 102. When the operator turns off the power switch, the CPU 101 ends the sewing data editing process.

  The CPU 101 displays an operation screen (not shown) of the sewing machine 1 on the display 81 of the operation panel 8. As shown in FIG. 5, when the operator does not give an instruction to edit the sewing data 180 (change key ON) in order to enlarge or reduce the pattern to be sewn on the work cloth 150 (S11: NO), the process proceeds to the process of S45. . When the operator operates the foot switch 90 or the operation panel 8 to operate the sewing machine 1 (S45: YES), the CPU 101 executes the sewing operation of the sewing machine 1 according to the operation (S47). The CPU 101 returns the process to the process of S11. When the operator does not operate the sewing machine 1 (S45: NO), the CPU 101 returns the process to the process of S11 and waits.

  When the operator operates the operation panel 8 to turn on the change key (S11: YES), the CPU 101 displays an enlargement / reduction rate input screen indicating the degree of pattern enlargement or reduction on the display 81. The CPU 101 stores the enlargement / reduction ratio input by the worker in the RAM 103 (S13), and images the presser frame 63 of the holding body 60 with the image sensor 50 (S15). In the present embodiment, it is assumed that the operator inputs 140% in the horizontal direction and 140% in the vertical direction as the enlargement / reduction ratio. The CPU 101 performs image processing of the captured image. The presser frame 63 includes the three openings 67 to 69 as described above. The CPU 101 detects the inner edges of the openings 67 to 69 of the presser frame 63 (S17).

  The CPU 101 displays the captured image on the display 81 of the operation panel 8 (S19). As shown in FIG. 6, the CPU 101 captures the closed areas formed by the inner edge obtained by the image processing as the surrounding areas A1, A2, and A3, and the lines indicating the surrounding areas A1 to A3 (thick dotted lines as an example). The image is displayed on the display 81 so as to overlap the image. The CPU 101 calculates the average value of the coordinate values of the surrounding areas A1 to A3, and obtains the coordinates of the respective central positions C1, C2, and C3. The CPU 101 superimposes marks indicating the center positions C1 to C3 on the captured image and displays them on the display 81 as candidates for reference positions when the patterns 151 to 153 formed in the surrounding areas A1 to A3 are enlarged or reduced. Further, the CPU 101 reads the sewing data 180, and displays the temporary patterns 161, 162, and 163 obtained by reproducing the patterns 151 to 153 based on the stitch data 171 to 175 on the display 81 on the captured image.

  In the sewing data editing process, the CPU 101 performs enlargement / reduction on the basis of a reference position set in each area for a pattern having a needle drop point in one or a plurality of areas designated as the specific area. The operator plans to uniformly enlarge / reduce the patterns in all the surrounding areas A1 to A3 detected by the image processing by the CPU 101, and set the reference positions for the enlargement / reduction to the center positions C1 to C3, respectively. If so, the surrounding areas A1 to A3 are not corrected. As shown in FIG. 5, in this case (S21: NO), the CPU 101 proceeds to the process of S23, designates the surrounding areas A1 to A3 as specific areas, and sets the central positions C1 to C3 as the respective reference positions. (S23). The operator can arbitrarily move the mark indicating the reference position of each specific area with the stylus pen 85 to change the reference position. The CPU 101 advances the process to step S29.

  The operator can correct the setting of the surrounding area when performing enlargement / reduction on a pattern in a part of the surrounding area A1 to A3 detected by the image processing by the CPU 101. In this case (S21: YES), the CPU 101 advances the process to S25. As shown in FIG. 6, the worker uses the stylus pen 85 to point the thick dotted lines indicating the surrounding areas A1 to A3 displayed on the display 81 by the CPU 101. The CPU 101 detects the position touched on the shooting screen by the touch panel 82, and if the position is on the thick dotted line indicating the surrounding areas A1 to A3, the CPU 101 activates or deactivates the surrounding areas A1 to A3 each time the worker points. Activate. The CPU 101 designates the surrounding areas A1 and A3 set as active by the worker as the specific areas P1 and P3 (see FIG. 8) (S25). The operator can also draw an arbitrary closed area with the stylus pen 85 and set it as the surrounding area. In this case, the CPU 101 displays a thick dotted line representing the surrounding area at the position touched by the worker on the shooting screen.

  The CPU 101 sets the center positions C1 and C3 of the specific areas P1 and P3 to the respective reference positions F1 and F3 (see FIG. 8) (S27). As described above, the operator can change the reference position by dragging and moving the mark positions indicating the reference positions F1 and F3 with the stylus pen 85. In this embodiment, the operator sets the reference positions F1 and F3 to the center positions C1 and C3 of the specific areas P1 and P3, respectively. When the specification of the specific areas P1 and P3 and the setting of the reference positions F1 and F3 are completed, the CPU 101 advances the process to S29.

  In order to perform sewing based on the sewing data 180, the CPU 101 sets the reading pointer to the head of the sewing data 180, that is, the address of the nonvolatile memory 104 that stores the instruction information 182 with the rank 181 of “0” (S29). The CPU 101 secures a storage area for the enlarged / reduced sewing data 280 (see FIG. 7), which is the edited sewing data 180, in the nonvolatile memory 104. The CPU 101 reads the sewing data 180 according to the reading pointer.

  The CPU 101 sets a needle drop point or a relay point in a specific area in the sewing data 180 as an enlargement / reduction target. The relay point is a position where the sewing needle 11 arrives by the movement of the holding body 60 regardless of the formation of the patterns 151 to 153 in the sewing data 180. The relay point is, for example, when moving the holding body 60 forward to facilitate the attachment / detachment of the sewing object, or in order to avoid interference with the sewing needle 11 of a three-dimensional part such as a button sewn first. Used when the holding body 60 is avoided.

  As shown in FIG. 7, the CPU 101 writes the instruction information 182 as it is into the enlargement / reduction sewing data 280 for the origin movement data 185 or the control data 189 (see FIG. 4) not related to the needle entry point or the relay point. As shown in FIG. 5, the coordinate data read from the sewing data 180 by the CPU 101 is the relative coordinates of the direction and distance of the current needle drop point with respect to the needle drop point of the previous rank (previous rank). Therefore, cumulative calculation is performed (S31), and coordinate data indicating the absolute position of the needle drop point or relay point with respect to the sewing needle 11 is calculated.

  The CPU 101 confirms whether the coordinate data of the stitch point or relay point of the stitch data 171 to 175 and the pre-feed data 191 to 195 is within the specific areas P1 and P3 (see FIG. 8) (S33). . When the CPU 101 reads the stitch data 171 and 172 of the pattern 151 and the blank feed data 192, the coordinate data of the absolute position of the needle entry point or the relay point is in the specific area P1 (S33: YES) ), The process proceeds to the process of S37. The CPU 101 stores the scale data (for example, 140% in the horizontal direction and 140% in the vertical direction) in which the stitch point data 171 and 172 and the coordinate data of the needle drop point indicated by the instruction information 182 of the blank feed data 192 are stored in the RAM 103 in the process of S13. ) To enlarge / reduce (S37). The CPU 101 obtains a relative movement amount from the needle drop point or the relay point in the preceding rank of the enlarged / reduced sewing data 280 to the enlarged / reduced coordinate data (S39). The CPU 101 writes the calculated relative movement amount in the expansion / contraction sewing data 280 as the new stitch data 271 and 272 and the instruction information 182 of the idle feed data 292, advances the reading pointer (S41), and indicates the instruction information 182. Is not “END” (S43: NO), the process returns to the process of S31.

  As shown in FIG. 7, the CPU 101 repeats the processes of S31 to S43, and stitches 171 and 172 whose rank 181 of the sewing data 180 is “3” to “87” and all the needle drops included in the pre-feed data 192 are included. Scale the point coordinate data. The CPU 101 writes the coordinate data of the enlarged and reduced needle entry points in the enlarged / reduced sewing data 280 as new stitch data 271 and 272 having ranks 181 of “3” to “87” and pre-feed data 292. Since the CPU 101 expands / contracts the coordinate data of all the needle drop points included in the stitch data 171 and 172 and the stitching data 192 in which the needle drop point exists in the specific area P1, the pattern shape after the enlargement / reduction is collapsed. Absent.

  When the CPU 101 reads the stitch data 173 of the pattern 152, the coordinate data of the absolute position of the needle drop point is not in the specific areas P1 and P3 (S33: NO), and the process proceeds to the process of S35. The CPU 101 does not change the coordinate data indicated by the instruction information 182 of the stitch data 173, and obtains the relative movement amount from the needle drop point or relay point in the previous rank of the enlargement / reduction sewing data 280 (S35). The CPU 101 writes the obtained relative movement amount as new idle feed data 293 in the enlargement / reduction sewing data 280, advances the reading pointer to the next rank (S39), and the instruction information 182 is not “end” (S3: NO), the process is returned to the process of S31.

  As shown in FIG. 7, the CPU 101 repeats the processes of S31 to S43, and the coordinate data indicated by the instruction information 182 for the stitch data 173 whose rank 181 of the sewing data 180 is “90” to “161” is directly enlarged / reduced sewing data 280. Write to.

  When the CPU 101 reads the idle feed data 194 (see FIG. 4) whose rank 181 of the sewing data 180 is “163”, the coordinate data of the absolute position of the needle entry point or the relay point is in the specific area P3. (S33: YES), the reference position F3 is used as a reference for enlargement / reduction (S37), and the relative movement amount from the needle entry point or relay point in the previous rank of the enlargement / reduction sewing data 280 to the coordinate data after enlargement / reduction is obtained (S39). The CPU 101 writes the obtained relative movement amount in the enlargement / reduction sewing data 280 as the instruction information 182 of the new idle feed data 294, and advances the reading pointer (S41).

  In the pattern 153, the coordinate data of the absolute position of the needle drop point is in the specific area P3 (see FIG. 8). The CPU 101 expands / contracts the coordinate data of all the needle drop points included in the stitch data 174 and 175 having the rank 181 of the sewing data 180 of “164” to “248” and the blank feed data 195. The CPU 101 writes the coordinate data of the enlarged and reduced needle entry points in the enlarged / reduced sewing data 280 as new stitch data 274 and 275 and rank feed data 295 having the ranks 181 of “164” to “248”.

  The CPU 101 writes the control data 189 indicated by the instruction information 182 whose rank 181 of the sewing data 180 is “249” and “250” into the enlargement / reduction sewing data 280 as it is. As shown in FIG. 5, since the control data 189 is “END” (S43: YES), the CPU 101 completes the creation of the enlarged / reduced sewing data 280 and advances the process to the process of S45.

  As shown in FIG. 8, the patterns 251 and 253 are patterns obtained by enlarging the patterns 151 and 153 with reference to the reference positions F1 and F3, respectively. The CPU 101 advances the process to S45 and waits until the operator operates the sewing machine 1 and starts sewing (S45: NO). When the operator operates the sewing machine 1 (S45: YES), the CPU 101 sews patterns 251, 152, and 253 based on the enlargement / reduction sewing data 280 (S47). When the sewing of the patterns 251, 152, and 253 is completed, the CPU 101 returns the process to the process of S 11 and stands by.

  As described above, the CPU 101 of the sewing machine 1 according to the present embodiment can generate the enlargement / reduction sewing data 280 that can sew the enlarged patterns 251 and 253 without changing the positional relationship between the patterns 151 and 153. Therefore, the operator does not need to create different sewing data every time the size of the pattern to be formed on the sewing object is different, and labor is not required. If there is one piece of sewing data, the CPU 101 can easily sew a pattern that has been enlarged or reduced according to various sizes of the sewing object.

  The CPU 101 can set the center positions C1 to C3 of the plurality of surrounding areas A1 to A3 as the reference positions of the specific areas. Therefore, the worker can save the trouble of setting the reference position in each of the plurality of specific areas. The CPU 101 can enlarge / reduce a plurality of patterns at the same rate. Therefore, the operator does not need to set the enlargement / reduction ratio for each pattern, and can save labor. The CPU 101 can designate a surrounding area to be detected by performing image processing on a captured image as a specific area. Therefore, the operator does not need to specify a plurality of specific areas, and can save labor. In addition, the operator can determine an arbitrary area while looking at the captured image and designate it as a specific area. The operator can enlarge / reduce only the desired pattern by determining the surrounding area so that the pattern that does not need to be enlarged / reduced deviates from the specific area. The CPU 101 can display a temporary pattern on the captured image. Therefore, the operator can select a pattern to be enlarged / reduced while viewing the temporary pattern, so that only the desired pattern can be reliably enlarged / reduced.

  In the present embodiment, the work cloth 150 corresponds to a “sewing object”. The control device 100 corresponds to a “sewing data editing device”. The holding body 60 corresponds to a “holding member”. The CPU 101 that designates the specific area in the processing of S23 or S25 corresponds to “designating means”. The CPU 101 that acquires the patterns 151 and 153 having the needle drop points in the specific areas P1 and P3 as the “target pattern” of the present invention in the process of S33 corresponds to “acquiring means”. The CPU 101 that sets the reference position in the processing of S23 or S27 corresponds to “setting means”. The CPU 101 that generates the stitch data of the patterns 251 and 253 corresponding to the “enlarged / reduced pattern” of the present invention by expanding and reducing the stitch data of the patterns 151 and 153 in the process of S37 corresponds to “generating means”. The image sensor 50 corresponds to “photographing means”. The CPU 101 that detects the inner edges of the openings 67 to 69 by the image processing in the process of S17 corresponds to the “detection unit”. The display 81 corresponds to “display means”. The CPU 101 that determines the surrounding areas A1 and A3 activated by the worker in the process of S25 corresponds to “determination means”. In the process of S19, the CPU 101 that draws the temporary patterns 161 to 163 based on the sewing data 180 so as to overlap the photographed image corresponds to “drawing means”. The CPU 101 that can select the execution of enlargement / reduction by activating or deactivating the thick dotted line pointed by the operator with the stylus pen 85 in the process of S25 corresponds to “selection means”. The transfer device 6 corresponds to a “moving mechanism”. The CPU 101 that controls the sewing machine 1 corresponds to “sewing means”.

  The present invention can be variously modified in addition to the above-described embodiment. The CPU 101 scales the stitch data 171, 172, 174, and 175 of the patterns 151 and 153 having the needle drop points in the specific areas P 1 and P 3 at a uniform scaling ratio, but the specific area P 1 and the specific area P 3 Different scaling ratios may be set. That is, the CPU 101 may set different scaling ratios for each of the plurality of specific areas. Although the CPU 101 performs enlargement / reduction on the entire pattern, the CPU 101 may enlarge / reduce a part of the pattern. The CPU 101 photographs the presser frame 63 of the holding body 60 with the image sensor 50 and designates a specific area on the captured image. The coordinates of the specific area and the reference position may be obtained by image processing. The CPU 101 sets the center position of each specific area as the reference position in the process of S23, but even if the center position based on the coordinate data of each pattern having a needle drop point in each specific area is set as the reference position. Good.

DESCRIPTION OF SYMBOLS 1 Sewing machine 6 Transfer apparatus 50 Image sensor 60 Holding body 63 Frame 67-69 Opening part 81 Display 100 Control apparatus 101 CPU
150 Work cloth 151-153, 251,253 Pattern 161-163 Temporary pattern 180 Sewing data 280 Enlargement / reduction sewing data

Claims (7)

A sewing data editing device for editing sewing data for forming a pattern on a sewing object,
Designating means for designating a specific area, which is a plurality of specific areas on the sewing object, with reference to a holding member that holds the sewing object when forming the pattern;
Acquisition means for acquiring a plurality of portions having needle drop points in each of the specific areas designated by the designation means based on the sewing data, respectively;
Setting means for setting a reference position, which is a reference position when enlarging or reducing the plurality of target patterns acquired by the acquiring means,
Generating means for editing the sewing data and generating enlarged / reduced sewing data for forming an enlarged / reduced pattern obtained by enlarging or reducing the plurality of the target patterns based on the reference position set in the setting means;
Sewing data editing device characterized by having.   The sewing data editing apparatus according to claim 1, wherein the setting means sets a center position of the specific area as the reference position.   The sewing data editing apparatus according to claim 1 or 2, wherein the target pattern is enlarged or reduced by the setting means at the same rate for all the target patterns. The holding member is a presser frame having an opening, and a photographing unit for photographing the presser frame
Detecting means for detecting a surrounding region surrounding the sewing object by the opening of the presser frame imaged by the imaging means;
Further comprising
The sewing data editing apparatus according to any one of claims 1 to 3, wherein the designation unit designates the surrounding area detected by the detection unit as the specific area. Display means for displaying an image taken by the photographing means;
Determining means for determining an arbitrary region in the image displayed by the display means;
Further comprising
The sewing data editing apparatus according to claim 4, wherein the designation unit designates an area determined by the determination unit as the specific area. Drawing means for drawing a plurality of the target patterns on the basis of the sewing data, superimposed on the image displayed on the display means;
Selection means capable of selecting execution of enlargement or reduction of the target pattern drawn by the drawing means;
Further comprising
The said generation means produces | generates the said expansion / contraction sewing data for forming the said expansion / contraction pattern for the said target pattern by which the selection which implements expansion or reduction by the said selection means was made into object. The sewing data editing device described. The sewing data editing device according to any one of claims 1 to 6,
A moving mechanism for holding the holding member and moving the holding member in a horizontal plane;
Sewing means for controlling the moving mechanism according to the enlargement / reduction sewing data edited by the sewing data editing device and sewing the enlargement / reduction pattern on the sewing object;
Sewing machine characterized by having

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