JP4858033B2 - Pattern sewing machine - Google Patents

Description

  The present invention processes a template original plate such as cardboard by moving up and down the cutting tool attached to the needle bar while driving the frame moving means based on the cutting line for the template created based on the pattern data of the pattern pattern. The present invention relates to a pattern sewing machine that creates a template for pressing a cloth.

  Conventionally, a pattern sewing machine such as an electronic cycle sewing machine forms a pattern while moving a work cloth held by a cloth holding frame independently in the X direction and the Y direction. When pattern patterns are formed with this type of sewing machine, the work cloth tends to float upward along with the rise of the sewing needle at the center of the cloth holding frame, and the work cloth becomes loose. There is a problem.

  Therefore, the template (cloth holding plate) in which the template hole is formed is applied to the upper side of the work cloth so that the work cloth can be prevented from being lifted. Accordingly, various apparatuses for forming various template holes in a template based on pattern data have been proposed.

For example, in the sewing die grooving device described in Patent Document 1, a rotary cutting blade is rotatably provided in a tool head, and a plate material is moved to an X and Y direction moving body based on comprehensive data obtained in advance from sewing data. , In the Y direction, the plate material can automatically form a comprehensive hole that encompasses the entire stitch pattern.
Japanese Patent No. 2595146 (pages 3 to 5, FIGS. 2 and 4)

  In the grooving device for sewing described in Patent Document 1, a comprehensive hole can be automatically formed in the plate material for the presser plate by moving the rotary cutting blade based on the sewing data, which is optimal for the pattern pattern. Since the work clamp plate is created, the work cloth on the outer periphery of the pattern pattern can be partly pressed, but the center part of the pattern pattern cannot be pressed, and the work cloth may be lifted up. There is a problem of skipping or skipping. Furthermore, it is necessary to prepare a dedicated die cutting device that rotates the rotary cutting blade at a high speed with a tool motor, and there is a problem that making the presser plate becomes very expensive.

  It is an object of the present invention to form a dividing line having a predetermined width along a pattern pattern sewing line on a template original plate such as cardboard to easily and quickly produce a template for sewing a pattern pattern. Is to do so.

  The pattern sewing machine according to claim 1 includes a sewing mechanism including a needle bar, a rotary hook, and a balance, and a frame moving means capable of independently moving and driving a cloth holding frame for holding a work cloth in two directions orthogonal to each other in a horizontal plane; In a pattern sewing machine having pattern data storage means for storing pattern data of a plurality of types of pattern patterns, setting means for setting shift amounts to be shifted respectively from the pattern pattern sewing line to both sides in the direction orthogonal to the sewing direction; Based on the pattern data received from the pattern data storage means, the data for the template dividing line is created by shifting the sewing line of the pattern pattern to both sides in the direction orthogonal to the sewing direction by the shift amount set by the setting means. Data creation means, a sewing machine with the upper thread and lower thread removed, with a cutting tool attached to the needle bar, and a template original plate attached to the cloth holding frame By controlling the driving of the frame moving means based on the data of the cutoff line received from the data creating means actuates the is obtained by forming configured to be able to split the line at cutting tool in the template the original sheet.

  When the shift amount for shifting the sewing line of the pattern pattern is set in advance and a pattern pattern to be used for sewing is selected, both sides in the direction orthogonal to the sewing direction are selected based on the pattern data of the selected pattern pattern. Since the template parting line data shifted by the shift amount is created, when the frame moving means is driven and controlled based on the created parting line data, the parting tool attached to the needle bar is controlled. By the vertical movement, a dividing line is formed on the template original plate.

  The pattern sewing machine according to claim 2, wherein the data creation means is divided by extending the dividing line to the start side of the pattern pattern start portion and the end side of the pattern pattern end portion by a shift amount, respectively. Line data is created.

  A pattern sewing machine according to a third aspect of the present invention is the pattern sewing machine according to the first or second aspect, wherein when the data creating means has a closed loop loop portion in the sewing line of the pattern pattern, a dividing line is formed inside the loop portion. This is to create parting line data that does not.

  A pattern sewing machine according to a fourth aspect is the pattern sewing machine according to any one of the first to third aspects, wherein the cutting tool is constituted by a sewing needle.

  The pattern sewing machine according to claim 5 is provided with a pitch setting means for setting a needle drop pitch when forming a cutting line when using a sewing needle as the cutting tool according to claim 4, and the data creating means has a pitch setting The dividing line data is created based on the needle entry pitch set by the means.

  According to the first aspect of the present invention, since the sewing mechanism, the frame moving means, and the pattern data storage means are provided, and the setting means and the data creation means are provided, the shift amount from the pattern data of the pattern pattern to be used for sewing is provided. Dividing line data that can form a template hole with a dividing width equivalent to twice the width is created, and a dividing line is formed by a cutting tool that moves up and down by controlling the frame moving means based on the dividing line data. Therefore, a template for sewing a pattern can be easily and quickly created at low cost.

  According to a second aspect of the present invention, the data creating means creates parting line data obtained by extending the parting line to the start side of the pattern pattern start part and the end side of the pattern pattern end part by the shift amount. Therefore, even when a cylindrical intermittent cloth presser through which the sewing needle is inserted is provided in the pattern sewing machine, interference between the intermittent cloth presser and the template can be reliably avoided at the sewing start portion and the sewing end portion. Other effects similar to those of the first aspect are obtained.

  According to a third aspect of the present invention, when the data creation means has a closed loop loop portion on the pattern pattern sewing line, the data creation means generates the split line data so as not to form a split line inside the loop portion. Because it is created, the dividing line by the cutting tool is not formed inside the loop, but the dividing line is formed only on the outline forming the template hole, which speeds up the process of creating the dividing line for the template. Can do. Other effects similar to those of the first or second aspect are achieved.

  According to invention of Claim 4, since the said cutting tool was comprised with the sewing needle, even if it does not prepare a special cutting tool, the sewing needle used for sewing can be utilized effectively and the template as a cloth presser can be made easy. Can be created. Other effects similar to those of any one of claims 1 to 3 are provided.

  According to the invention of claim 5, when using a sewing needle as the cutting tool, there is provided pitch setting means for setting a needle drop pitch when forming a cutting line, and the data creation means is set by the pitch setting means. Since the dividing line data is created based on the needle drop pitch, the operator can create a presser foot template with any desired needle drop pitch, and workability can be improved. Other effects similar to those of the fourth aspect are achieved.

  The pattern sewing machine of this embodiment expands the sewing line of the pattern pattern by a predetermined width on both the left and right sides in the direction orthogonal to the sewing direction, and creates split data that does not form a split line inside the closed loop loop portion. Then, based on the cutting line data, the sewing needle as a cutting tool is moved up and down while feeding the feed plate, so that a template hole can be formed on a template original plate such as cardboard.

  As shown in FIG. 1, the pattern sewing machine 1 includes a bed portion 5 and an arm portion 6 arranged on the upper surface side of the sewing machine table 3. A needle plate 7 is fixed to the front upper surface of the bed portion 5, and a presser foot device 8 is provided on the upper side of the needle plate 7.

  The presser foot device 8 holds the cloth to be sewn with the presser foot plate 12 and the feed plate 10 and moves left and right via an X-direction drive mechanism (not shown) driven by the X-axis drive motor. It moves in the direction (X direction) and the front-rear direction (Y direction) via a Y direction drive mechanism (not shown) driven by a Y axis drive motor. As shown in FIG. 2, the presser foot device 8 includes a feed plate 10 that can move back and forth and right and left on the needle plate 7, a presser arm 11 provided on the feed plate 10, and a front end portion of the presser arm 11. It is comprised from the rectangular frame-shaped cloth presser board 12 etc. which were attached so that raising / lowering was possible.

  The rectangular frame-shaped cloth presser plate (cloth holding frame) 12 is always urged and lifted by a spring and is located away from the feed plate 10, but is urged by a presser solenoid 14 attached to the arm portion 6. When it is done, it is lowered to a position where it contacts the feed plate 10 and is movable in the X direction and the Y direction in synchronization with the feed plate 10 while holding the cloth W between the feed plate 10. Yes. Here, a frame moving mechanism including an X-direction drive mechanism and a Y-direction drive mechanism that move the cloth presser plate 12 and the feed plate 10 in the X direction and the Y direction is provided. This frame moving mechanism corresponds to a frame moving means.

  The arm portion 6 is provided with a needle bar 16 that reciprocates up and down and a balance, and a sewing needle (cutting tool) 18 is attached to the lower end of the needle bar 16. The bed 5 is provided with a rotary hook (not shown) that forms a seam in cooperation with a sewing needle. A sewing mechanism is constituted by the needle bar 16 to which the sewing needles 18 are attached, a balance, a rotary hook and the like. As shown in FIG. 1, an operation panel 20 operated by an operator is erected on the right side of the upper surface of the sewing machine table 3. The operation panel 20 is mainly operated when various commands for the sewing machine 1 are input.

  As shown in FIG. 1, a control box 22 is provided below the sewing machine table 3. The control box 22 includes a control device 30 described later. On the lower side of the sewing machine table 3, a pedal-type start / stop switch 24 is arranged for starting / ending the sewing operation and switching the operation of raising and lowering the presser foot 12.

Next, the control system of the pattern sewing machine 1 will be described.
As shown in FIG. 3, the control device 30 is composed of a computer including a CPU 31, a ROM 32, a RAM 33, and the like. The control device 30 includes a start / stop switch 24, a presser switch 35 for switching the presser arm 11 between a presser position and a presser release position, a spindle rotation angle detection sensor 36 for detecting the rotation angle of the sewing machine spindle, and an operation A panel 20, a drive circuit 38 for the sewing machine motor 37, a drive circuit 39 for driving the presser solenoid 14 capable of switching the presser arm 11 to the presser position, and a drive circuit 41 for the X-axis drive motor 40 A drive circuit 43 for the Y-axis drive motor 42 is connected to each other.

  The operation panel 20 is provided with a small liquid crystal display 20a, a numeric keypad 20b for inputting numerical values, switches 20c including various switches for setting sewing parameters, and the like.

  In the ROM 32 (pattern data storage means), in addition to various control programs for controlling the pattern sewing machine 1 and a split line data creation control program unique to the present application described later, a plurality of patterns for sewing a plurality of pattern patterns 50 to be sewn are provided. The pattern data is stored in advance. The RAM 33 is appropriately provided with a counter memory and a buffer which are necessary for sewing the pattern pattern 50 and executing a division data creation control to be described later, such as a memory and a work memory for temporarily storing calculation results calculated by the CPU 31. It is done.

  Next, the parting line data creation control executed by the control device 30 will be described based on the flowchart of FIG. However, the symbol Si (i = 11, 12, 13,...) In the figure is each step.

  When this control is started, first, a setting process for setting the shift amount D is executed (S11). This shift amount D is for setting the dividing width of the dividing line for the template obtained by shifting the sewing line of the pattern pattern 50 to the left side and the right side orthogonal to the sewing direction. Therefore, the operator sets a desired shift amount on the shift amount setting screen displayed on the display 20a of the operation panel 20 using the numeric keypad 20b. This shift amount D is ½ of the dividing width.

  Next, based on the pattern data of the pattern pattern 50 selected in advance, an extraction process for extracting all the original line segments A composed of straight line segments is executed, and each of the extracted plurality of original line segments A is executed. As for the line segment numbers (A1 to An), a start point S1 and an end point S2 are set for each line segment (S12).

  Next, left parting line calculation control (see FIG. 5) for left parting line calculation processing is executed (S13). When this control is started, first, an initial value “1” is set to the count value n of the line segment counter (S21). Next, with respect to the start point S1 and end point S2 of the base line segment An specified by the line segment count value n, the shift point shifted by the shift amount D to the left of the base line segment An of the perpendiculars orthogonal to the sewing direction. P1 and P2 are respectively calculated (S22). Next, the dividing line Ln having the shift point P1 as the start point P1 and the shift point P2 as the end point P2 is set (S23).

  Next, when the main line segment An is not final (S24: No), the line segment count value n is incremented by one (S25), and the processes after S22 are repeatedly executed. A dividing line Ln is sequentially created on the left side. Then, if the base line segment An to be calculated is final (S24: Yes), this control is terminated and the process returns to S14 of the divided line data creation control.

  Next, in the division line data creation control, intersection calculation control (see FIG. 6) for intersection calculation processing is executed (S14). This intersection calculation control is to calculate the intersection for each of the left dividing lines Ln created in FIG. When this control is started, an initial value “1” is set to the line segment count value n (S31). Next, the coordinates of the intersection CPn between the dividing line Ln specified by the line segment count value n and the next dividing line L (n + 1) are calculated (S32). Next, the end point coordinate P2 of the dividing line Ln is updated to the intersection point coordinate CPn (S33).

  Next, the starting point coordinate P1 of the dividing line L (n + 1) is updated to the intersection point coordinate CPn (S34). Next, when the dividing line Ln to be calculated is not final (S35: No), the line segment count value n is incremented by 1 (S36), and the processes after S32 are repeatedly executed. Starting point P1 is updated to the intersection coordinates CPn. If the division line Ln to be calculated is final (S35: Yes), this control is terminated and the process returns to S15 of the division line data creation control.

  Next, in the parting line data creation control, start part extension calculation control (see FIG. 7) for start part extension calculation processing for extending the start part 50a of the pattern 50 to the start side is executed (S15). When this control is started, the coordinates of the starting point P1 of the leading dividing line L1 are changed to the coordinates moved by the shift amount D on the extension line in the direction opposite to the sewing direction (S41). Next, the coordinates of the end point P2 of the final dividing line Lm are changed to the coordinates moved by the shift amount D on the extension line in the sewing direction (S42), and this control is terminated and the dividing line data creation control S16 is completed. Return to

  Next, in the cut line data creation control, right cut line calculation control (see FIG. 8) for right cut line calculation processing is executed (S16). This right parting line calculation process is performed by creating a left parting line in the reverse order from the last base line An to the first base line segment with respect to the left side split line calculation process described in FIG. A dividing line can be created on the right side of the sewing line of the pattern 50.

  When this control is started, first, the maximum value “m” of the dividing line L is set as the count value n of the line segment counter (S45). Next, with respect to the end point S2 and the start point S1 of the base line segment An specified by the line segment count value n, the sewing direction is shifted to the left side of the base line segment An by the shift amount D among the perpendicular lines orthogonal to the reverse direction. Shift points P1 and P2 are respectively calculated (S46). Next, the dividing line Ln having the shift point P1 as the start point P1 and the shift point P2 as the end point P2 is set (S47).

  Next, when the main line segment An is not the first (S48: No), the line segment count value n is decremented by one (S49), and the processes after S46 are repeatedly executed. A dividing line Ln is sequentially created on the right side. If the calculation-target original line segment An is the first (S48: Yes), this control is terminated and the process returns to S17 of the divided line data creation control.

  Next, in the division line data creation control, intersection calculation control (see FIG. 9) for intersection calculation processing is executed (S17). This intersection calculation control is substantially the same as the intersection calculation control shown in FIG. 6, and calculates the intersection for each of the right cut lines Ln created in FIG. When this control is started, the maximum value “m” of the dividing line L is set to the line segment count value n (S51). Next, the coordinates of the intersection CPn between the dividing line Ln specified by the line segment count value n and the previous dividing line L (n−1) are calculated (S52). Next, the starting point coordinate P1 of the dividing line Ln is updated to the intersection point coordinate CPn (S53).

  Next, the end point coordinate P2 of the dividing line L (n-1) is updated to the intersection point coordinate CPn (S54). Next, when the dividing line Ln to be calculated is not the first (S55: No), the line segment count value n is decremented by 1 (S56), and S52 and subsequent steps are repeatedly executed. The coordinates of the start point P1 and the end point P2 are updated to the intersection point coordinates CPn. If the dividing line Ln to be calculated is the first (S55: Yes), this control is terminated and the process returns to S18 of the dividing line data creation control.

  Next, in the parting line data creation control, end portion extension calculation control (see FIG. 10) for end portion extension calculation processing for extending the end portion 50b of the pattern 50 to the end side is executed (S18). When this control is started, the coordinates of the starting point P1 of the final dividing line Lm are changed to the coordinates moved by the shift amount D on the extension line in the sewing direction (S58). Next, the coordinates of the end point P2 of the first dividing line L1 are changed to the coordinates moved by the shift amount D on the extension line in the direction opposite to the sewing direction (S59). The process returns to S19 of creation control.

Next, in the divided line data creation control, the outer divided line extraction control (see FIG. 11) for the outer divided line extraction process is executed (S19).
When this control is started, first, all the dividing lines Ln created in S13 to S18 are defined in order of L1, L2, L3... Lm in the sewing direction (S61). The starting point of Ln is defined in the order of P1, P2, P3... Pm (S62). Next, an initial value “1” is set to the line segment count value n (S63).

  Next, Pn is set at the start point Ps of the target dividing line Ln to be calculated, and P (n + 1) is set at the end point Pe of the target dividing line Ln (S64). Next, the dividing line Ln that intersects the dividing line Ln that connects the starting point Ps and the ending point Pe of the target dividing line Ln is searched (S65). Next, when the intersecting dividing line Ln is not detected (S66: No), the line segment count value n is incremented by 1 (S67), and the dividing line Ln connecting the start point Ps and the end point Pe is stored as an outline. (S68).

  Next, the coordinates of the end point Pe are set to the coordinates of the start point Ps of the target dividing line Ln (S69). Next, when the line segment count value n is larger than the last intersection number (the number of the intersection where two dividing lines Ln intersect as will be described later) (S70: No), the end point Pe of the target dividing line Ln. Is set to P (n + 1) (S71), and the line segment count value n is not "1" (S72: No), S65 and subsequent steps are repeatedly executed.

  By the way, when the intersecting dividing line Ln is detected and there is one intersection (S73: No), the intersection coordinates are set to the end point Pe (S74), and the starting point of the dividing line Ln intersecting the line segment count value n. The Ps number is set (S75), and S68 and subsequent steps are executed. On the other hand, when the intersecting parting line Ln is detected and there are two or more intersections (S73: Yes), the coordinates of the intersection closest to the start point Ps are adopted (S77), and S74 and subsequent steps are executed.

  In S70, when the line segment count value n is equal to or smaller than the last intersection number (S70: Yes), “0” is set to the line segment count value n (S76), and S71 and subsequent steps are executed. In S72, when the line segment count value n becomes “1” (S72: Yes), this control is terminated and the process returns to S20 of the divided line data creation control.

  Next, in the dividing line data creation control, a pitch setting process for setting a needle drop pitch when forming the dividing line L on the template original plate is executed (S20). In this pitch setting process, the operator sets a desired needle drop pitch (feed amount) on the needle drop pitch setting screen displayed on the display 20a of the operation panel 20 by using the numeric keypad 20b. Next, template division line data is created based on the outer shape division line L created in S19 and the set needle drop pitch (S21).

  Here, the control device 30 that executes the division line data creation control excluding S11 (shift amount setting processing) and S20 (pitch setting processing) in FIG. 4 corresponds to the data creation means, and the operation panel 20 that executes S11 and the control. The device 30 corresponds to a setting unit, and the operation panel 20 that executes S20 and the control device 30 correspond to a setting unit.

Next, the operation for creating the dividing line data for a template configured in this way will be described.
It is assumed that the sewing line of the pattern 50 to be used for sewing is composed of four straight lines C1 to C4 as shown in FIG. In this case, the straight line C1 and the straight line C4 intersect, and a loop portion 50c is formed by the latter half of the straight line C1, the straight line C2, the straight line C3, and the first half of the straight line C4.

  First, as shown in FIG. 13, with respect to the first (first) direct line C1 among the direct lines C1 to C4 of the selected pattern pattern 5050, the shift amount D is on the perpendicular line from the start point S1 and the end point S2, respectively. Shift points P1 and P2 shifted to the left are respectively calculated, and these shift points P1 and P2 are connected to define the left dividing line L1, the shift point P1 is defined as the start point P1, and the shift point P2 is defined as the end point P2.

  As shown in FIG. 14, the left divided lines L <b> 2 to L <b> 4 are obtained in the same manner for each of the second straight line C <b> 2 to the final straight line C <b> 4. Next, as shown in FIG. 15, an intersection coordinate CP1 between the left dividing line L1 and the straight line C2 is obtained. Next, the coordinate of the end point P2 of the left parting line L1 is changed to the intersection point coordinate CP1, and the coordinate of the starting point P1 of the left parting line L2 is changed to the point of intersection coordinate CP1. Here, since the end point P2 of the left parting line L1 and the starting point P1 of the left parting line L2 have the same coordinates, the starting point of the left parting line L2 is P2, and these two left first and second parting lines L1 and L2 are It is continuous.

  Next, as shown in FIG. 17, the intersection CP2 between the left parting line L2 and the left parting line L3, and the intersection point CP3 for the left parting line L3 and the left parting line L4 are obtained in the same manner, and each left parting line L1 is obtained. The end point and start point of .about.L4 are changed, and P3 and P4 are obtained.

  Next, as shown in FIG. 18, at the start portion 50a of the left parting line L1, the start point P1 is moved by a user-specified shift amount D on an extension line opposite to the sewing direction. At the end portion 50b of the left parting line L4, the end point P5 is moved by the shift amount D on the extension line in the sewing direction. As a result, as shown in FIG. 19, all left side dividing lines L1 to L4 shifted by the shift amount D to the left side of the original direct lines C1 to C4 are completed.

  Next, as shown in FIG. 20, the direct lines C1 to C4 constituting the sewing line of the pattern pattern 50 are directed from the sewing end point to the sewing start point, that is, from the direct line C4 to the direct line C1. As described above, the right side cut lines L6 to L9 shifted by the shift amount D are created on the right side of the original direct lines C1 to C4 by the series of left side cut line creation processes according to the sewing direction described above. The eight dividing lines L1 to L4 and L6 to L9 thus determined and the starting points of the dividing lines L1 to L4 and L6 to L9 are set as shown in the figure.

  Next, as shown in FIG. 21, the two points P1 and P10 of the start part 50a calculated by the start part extension calculation and the two points P5 and P6 of the end part 50b calculated by the end part 50b extension calculation are connected. Thereby, all the parting lines L1-L10 surrounding a sewing line are completed. Next, as shown in FIG. 22, the division lines L1 to L10 created in this way are defined as L1, L2, L3... L10 sequentially from the first division line L1.

  Next, as shown in FIG. 23, it is searched whether or not the other divided lines L2 to L10 that intersect with the first divided line L1 intersect. As a result, the intersection with the dividing line L1 (excluding the intersection at the start point and the end point) intersects at two points of the dividing line L4 and the dividing line L6. Let these intersections be P1-4 and P1-6. In this case, the intersection point P1-4 with the dividing line L4 closest to the starting point P1 of the dividing line L1 is employed.

  Therefore, the dividing line L1a starting from P1 and ending at P1-4 and the dividing line L4a starting from P1-4 and ending at the ending point P5 of the dividing line L4 intersecting the dividing line L1 are extracted as outlines. And remember. Next, the dividing line L that intersects the dividing line L4a having the intersection P1-4 is searched. The dividing line L where no intersection is found without intersecting is stored for outline extraction.

  Next, a series of such retrieval processes are repeated, and intersection points are obtained in order. As a result, three intersection points P1-4, P6-1, and P4-9 are found. About the parting line L which does not have an intersection with the other parting line L, it is used for external shape extraction. As a result, as shown in FIG. 24, an effective dividing line L is extracted as an outline shown by a solid line.

  Thus, as shown in FIG. 24, when the dividing line data (illustrated by a solid line) of the dividing line L as an effective outline is created, the template-use data is generated based on the needle drop pitch set by the user. Split line data is created. Finally, the user attaches a rectangular template plate made of cardboard to the rectangular hole portion of the presser foot plate 12, removes the upper thread and lower thread, and then attaches the sewing needle 18 to the needle bar 16. The sewing machine 1 is driven.

  As a result, as shown in FIG. 25, the sewing needle 18 is driven up and down and the frame moving mechanism is driven to move. Therefore, a minute predetermined value based on the needle drop pitch is applied to the template original plate 52 by the dividing line data created in this way. The sewing needle 18 can be pierced every distance, and a dividing line can be formed by a large number of needle holes. For example, when the needle drop pitch is about 3 mm, the sewing needle 18 is pierced every about 3 mm. Therefore, when the interval between the needle drops is cut with a cutter, the pattern stitch 50 is attached and the shift D is divided twice. A template hole 52a having a width is formed.

  In this way, by setting the shift amount and selecting the desired pattern pattern 50, the division line data that can form the template hole 52a having the division width corresponding to the shift amount D from the pattern data of the pattern pattern to be used for sewing. By driving and controlling the frame moving mechanism based on the cutting line data, a template for sewing a pattern can be created easily, quickly and inexpensively.

  Since split line data obtained by extending the split line by the shift amount D is created on the start side of the start portion 50a of the pattern pattern 50 and the end side of the end portion 50b of the pattern pattern 50, the sewing needle 18 is added to the pattern sewing machine 1. Even when the cylindrical intermittent cloth presser is inserted, the interference between the intermittent cloth presser and the template original plate 50 can be reliably avoided at the sewing start portion 50a and the sewing end portion 50b.

  In the case where the sewing line of the pattern pattern 50 has a closed loop loop portion 50, dividing line data that does not form a dividing line is created inside the loop portion 50. The dividing line by the sewing needle 18 is not formed, and the dividing line is formed only on the outline forming the template hole 52a, so that the template dividing line creation process can be speeded up.

  The needle drop pitch for forming the cut line is set, and the cut line data is created based on the set needle drop pitch, so the operator can press the presser foot with any desired needle drop pitch. Template can be created and workability can be improved.

Next, a modified embodiment in which the above embodiment is partially modified will be described.
1) When forming the template hole 52a on the template original plate 52 based on the cutting line data, various cutting tools such as a thick drilling needle dedicated to drilling, a cone, a knife, and a cutter are used instead of the sewing needle 18 for sewing. It may be used.

2) The template original plate 52 is not limited to cardboard, and may be a thin plate made of wood or synthetic resin, as long as it is a plate material through which the cutting tool penetrates.

3) In this embodiment, the pattern pattern 50 having a sewing line made of a straight line has been described so as to simplify the description. However, various pattern patterns including a curved loop portion may be used. In this case, the curved portion may be processed into a plurality of direct sewing lines by various graphic calculation processes, and the present plan may be applied.

4) When the shift amount is set by the setting means, it may not be equal on both sides with respect to the sewing line. For example, different amounts may be set for the right shift amount and the left shift amount in the direction from the start point to the end point. Moreover, you may set with the component of a X direction and a Y direction. Furthermore, the shift amount may be set based on data written in advance in a ROM or the like.

It is a perspective view of the pattern sewing machine which concerns on the Example of this invention. It is a principal part expansion partial perspective view of a pattern sewing machine. It is a block diagram of a control system of a pattern sewing machine. It is a flowchart of parting line data creation control. It is a flowchart of left side parting line calculation control. It is a flowchart of intersection calculation control. It is a flowchart of start part expansion calculation control. It is a flowchart of right side cutting line calculation control. It is a flowchart of intersection calculation control. It is a flowchart of an end part extended arithmetic control. It is a flowchart of outline parting line extraction control. It is explanatory drawing explaining a pattern pattern. It is explanatory drawing of the left parting line which shifted the head direct line to the left side. It is explanatory drawing of the left parting line which shifted all the direct lines to the left side. It is explanatory drawing of the intersection calculation of two parting lines. It is explanatory drawing which makes two parting lines continue by an extended intersection. It is explanatory drawing which makes all the parting lines continue in an extended intersection. It is explanatory drawing which expands the start part and end part of a pattern pattern. It is explanatory drawing which calculates | requires all the dividing lines on the left side. It is explanatory drawing which calculated | required all the right parting lines on the right side of the pattern pattern. It is explanatory drawing which calculated | required all the division lines of the right and left sides of a pattern pattern. It is explanatory drawing which defined the number to all the division lines. It is explanatory drawing which calculates | requires the intersection in a loop part of a closed loop shape. It is explanatory drawing of the completed parting line which does not form the parting line inside a loop part. It is a top view of the template for cloth presser plates in which the template hole was formed.

Explanation of symbols

10 Feed plate 12 Work clamp plate 18 Sewing needle (cutting tool)
20 Operation panel 20b Numeric keypad 30 Control device 32 ROM (pattern data storage means)
40 X-axis drive motor 42 Y-axis drive motor 50 Pattern pattern 50a Start part 50b End part 52 Template original plate

Claims (5)

Sewing mechanism including needle bar, rotary hook and balance, frame moving means capable of independently moving the cloth holding frame for holding the work cloth in two directions perpendicular to each other in the horizontal plane, and pattern data of a plurality of types of pattern patterns In a pattern sewing machine provided with stored pattern data storage means,
A setting means for setting a shift amount for shifting from the sewing line of the pattern pattern to both sides in the direction orthogonal to the sewing direction;
Based on the pattern data received from the pattern data storage means, the data of the dividing line for the template obtained by shifting the sewing line of the pattern pattern to both sides in the direction orthogonal to the sewing direction by the shift amount set by the setting means, respectively. Data creation means to create;
Based on the data of the cutting line received from the data generating means while operating the sewing mechanism in a state where the upper thread and lower thread are removed, the cutting bar is mounted on the needle bar, and the template original plate is mounted on the cloth holding frame. By driving and controlling the frame moving means, the template original plate was configured to be able to form a cutting line with the cutting tool,
Pattern sewing machine characterized by that.   2. The data creation unit creates parting line data obtained by extending parting lines to a start side of a pattern pattern start part and an end side of a pattern pattern end part by the shift amount, respectively. Pattern sewing machine described in 1.   The data creation means, when the sewing line of the pattern pattern has a closed loop loop portion, creates the cut line data so as not to form a cut line inside the loop portion. Item 3. The pattern sewing machine according to Item 1 or 2.   The pattern sewing machine according to claim 1, wherein the cutting tool is a sewing needle. When using the sewing needle as the cutting tool, provided with a pitch setting means for setting a needle drop pitch when forming the cutting line,
5. The pattern stitching sewing machine according to claim 4, wherein the data creating unit creates parting line data based on the needle entry pitch set by the pitch setting unit.

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