JP2016193019A - sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sewing machine which can be easily shifted from a normal sewing mode to a pattern sewing mode.SOLUTION: When there is panel operation of long depression on a pitch display region during display of a home screen, a CPU displays a main part setting screen 80 on a display part 11. When, on the main part setting screen 80, a pitch display part 82 is activated, and panel operation of a [+] key 84 A or a [-] key 84 B is accepted, the CPU increases or decreases a normal pitch on the pitch display part 82. When the panel operation of the [+] key 84A is accepted while the normal pitch is an upper limit value (5.00 mm), the CPU displays a pattern name "DS-1" of a sewing pattern on the pitch display part 82 and sets a special sewing mode. In the special sewing mode, the CPU performs pattern sewing according to the sewing pattern.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a sewing machine capable of adjusting a transfer amount of a sewing object.

  There is a sewing machine that can adjust the transfer amount of a sewing object such as cloth. For example, the sewing machine described in Patent Document 1 can perform predetermined so-called pattern sewing on a sewing object in accordance with a sewing pattern in which a cloth feed amount per cycle of the vertical movement of the sewing needle is set in advance. Further, the sewing machine can perform any pattern sewing on the sewing object according to the sewing pattern arbitrarily set by the user.

JP-A-2005-87336

  A user may want to sew a sewing object by switching between a pattern sewing according to the sewing pattern and a so-called normal sewing in which the amount of movement of the sewing object per vertical movement of the needle bar is constant. The conventional sewing machine cannot switch between the pattern sewing mode for performing pattern sewing and the normal sewing mode for performing normal sewing, and it is not easy to shift from the normal sewing mode to the pattern sewing mode.

  An object of the present invention is to provide a sewing machine that can easily shift from a normal sewing mode to a pattern sewing mode.

  According to one aspect of the present invention, a needle bar that is mounted with a sewing needle and can move up and down with respect to the sewing object, and a transfer mechanism that can transfer the sewing object in synchronization with the vertical movement of the needle bar; A normal sewing mode in which the transfer mechanism sets the transfer amount to which the sewing object is transferred by one up and down movement of the needle bar, and the number of the up and down movements of the needle bar. Mode setting means for setting a special sewing mode for sewing on the sewing object in accordance with a sewing pattern in which a plurality of patterns corresponding to the number of stitches and the transfer amount are set and combined, and control for displaying information on the screen A display control unit for performing, and a first input unit for receiving an input of an instruction for information displayed on the screen by the display control unit, wherein the display control unit displays first information related to sewing on the screen. Screen and the first screen When the first input unit receives a first instruction during display, it is possible to switch and display a second screen that displays the transfer amount on the screen, and the mode setting means is configured to display the normal sewing mode. A sewing machine is provided that sets the special sewing mode when the first input unit receives a second instruction while the display control unit is displaying the second screen in a state in which the sewing machine is set. Is done.

  When the display control unit displays the second screen, the sewing means sews the sewing object in the normal sewing mode. If there is a second instruction on the second screen, the mode setting means sets the special sewing mode. That is, the mode setting means can shift from the normal sewing mode to the special sewing mode while the display control unit displays the second screen on the screen. Therefore, since the user displays a screen that can shift to the special sewing mode, the user can save time and effort to return the screen display to the first screen. Therefore, the sewing machine can easily shift to the special sewing mode.

  In this aspect, when the first input unit receives a third instruction different from the first instruction during the display of the first screen, the display control unit displays the screen in the special sewing mode. A third screen on which a plurality of the patterns can be set may be displayed. If there is a first instruction on the first screen, the display control unit can shift to a second screen that can be sewn, and if there is a third instruction, the display control unit can shift to a third screen on which a plurality of patterns can be set. That is, the display control unit can make the screen that can be sewn and the screen that can set the pattern different.

  In this aspect, the display control unit is configured to display the screen when the first input unit receives a fourth instruction while the mode setting unit sets the special sewing mode while the second screen is displayed. May be switched from the second screen to the third screen. When the first input unit receives the fourth instruction, the display control unit can shift to the third screen on which the pattern can be set if the special sewing mode is set. The display control unit can switch the screen display from the second screen to the third screen by a simple operation accepted by the first input unit in a state where the special sewing mode is set.

  In this aspect, during the display of the third screen, pattern setting means for setting a plurality of the patterns in the special sewing mode based on a fifth instruction received by the first input unit, and the first input unit If the received fifth instruction is an instruction for determining whether or not the number of stitches of the pattern is set to 0, and an instruction for setting the number of stitches of the pattern to 0, the number of stitches is determined. If the means determines, invalidation means for invalidating the settings after the pattern in which the number of stitches is set to 0 may be provided. When the sewing machine is instructed to set the number of stitches of the pattern to 0, the subsequent pattern setting is invalidated, so that the contents of the sewing pattern in the special sewing mode can be easily changed.

  In this aspect, the pattern setting means can set a negative value for each of the transfer amounts of a plurality of the patterns, and the transfer mechanism can change the sewing object when the transfer amount is a negative value. The transfer amount may be transferred in the opposite direction to the case where the transfer amount is a positive value. The sewing machine can be sewn in various patterns in the special sewing mode.

  In this aspect, the normal stitch number setting means for setting the number of stitches in the normal sewing mode and the special needle for individually setting the stitch count for each of the plurality of patterns of the sewing pattern in the special sewing mode. Number setting means, setting judgment means for judging whether or not the number of stitches has been set by the normal stitch number setting means, and sewing means for sewing the sewing object in the mode set by the mode setting means. When the setting determining means determines that the number of stitches is set by the normal stitch number setting means, when the sewing means sews in the special sewing mode, the number of stitches set by the normal stitch number setting means is set. When reaching, the sewing may be finished even if the number of stitches set by the special stitch number setting means is not reached. Even if the sewing machine is changed between a plurality of sewing patterns having different numbers of stitches, the sewing is performed with the predetermined number of stitches set by the normal stitch number setting means, so that the user's desired pattern can be sewn.

  In this aspect, the change for changing the transfer amount in the normal sewing mode displayed on the second screen by the display control unit within an effective range set in advance based on an input of an instruction received by the first input unit. And the second instruction may be an instruction for the changing means to change the transfer amount to a value exceeding the effective range. The sewing machine can give the second instruction based on a simple operation using the transfer amount changing means without providing a new means for the instruction.

  In this aspect, the display control unit displays a receiving unit that receives an input of an instruction from the first input unit in the second screen, and the second instruction is an instruction based on an operation on the receiving unit. May be. The sewing machine can give a second instruction based on an operation on the reception unit.

  In this aspect, the second instruction is performed by the first input unit for a predetermined time with respect to a display portion of the transfer amount displayed on the second screen in a state where the mode setting means sets the normal sewing mode. The instruction may be based on an operation for receiving the input that has been continued. The sewing machine can give the second instruction based on a simple operation for accepting a long press on the display portion of the transfer amount without providing a new means for the instruction.

  In this aspect, the second instruction is input by the first input unit to the display portion of the transfer amount displayed on the second screen in a state where the mode setting means sets the normal sewing mode. The instruction may be based on a series of operations for accepting cancellation of the input state after accepting the change of the input position in one direction while maintaining the input state. The sewing machine can issue the second instruction based on a simple operation that accepts a so-called flick operation starting from the transfer amount display portion without providing a new means for the instruction.

1 is a perspective view of a sewing machine 1. FIG. 3 is a perspective view of a transfer mechanism 50. FIG. 2 is a block diagram showing an electrical configuration of the sewing machine 1. FIG. It is a figure which shows the transition of the screen displayed on the display part. It is a figure which shows the switching of the sewing shape in the main part setting screen. It is a figure which shows an example of pattern sewing. It is a flowchart (1/3) of a screen display program. It is a flowchart (2/3) of a screen display program. It is a flowchart (3/3) of a screen display program. It is a figure which shows switching of the normal sewing mode and special sewing mode in the main part setting screen. It is a flowchart of a sewing program. It is a figure which shows switching of the normal sewing mode and special sewing mode in the main part setting screen 80 of the modification.

  Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. The present embodiment is an example in the case where the present invention is applied to a sewing machine that forms a stitch by normal sewing and pattern sewing on a sewing object (for example, a work cloth). The normal sewing in the present embodiment is a sewing method in which the transfer amount (hereinafter referred to as “pitch”) for transferring the work cloth by a single vertical movement of the needle bar is set to be constant and the work cloth is sewn. Pattern sewing is a sewing method in which a work cloth is sewn according to a sewing pattern in which a plurality of patterns each having a pitch and the number of stitches are set and combined. In this embodiment, regular stitching and continuous stitching can be performed in regular sewing and pattern sewing. Fixed-dimension sewing is a sewing method in which the number of stitches, which is the number of times the needle bar is moved up and down, is set and stitches are formed by the number of stitches. Continuous stitching is a stitching method that forms stitches continuously without setting the number of stitches. In the following description, the pitch corresponding to normal sewing is referred to as “normal pitch” for convenience, and the pitch corresponding to pattern sewing is referred to as “pattern pitch” for convenience. The number of stitches corresponding to fixed-dimension stitching is called “the number of fixed-size stitches” for convenience, and the number of stitches in pattern sewing is called “number of pattern stitches” for convenience.

  The schematic structure of the sewing machine 1 will be described with reference to FIGS. The upper left side, lower right side, lower left side, upper right side, upper side, and lower side in FIG. 1 are the left side, right side, front side, rear side, upper side, and lower side of the sewing machine 1, respectively.

  As shown in FIG. 1, the sewing machine 1 includes a bed portion 2, a pedestal portion 3, an arm portion 4, and a tip portion 5. The bed part 2 is a foundation of the sewing machine 1. The bed 2 is attached to an opening formed on the upper surface of a table (not shown). The bed portion 2 has a substantially rectangular shape in plan view and extends in the left-right direction. The pedestal 3 extends upward from the right end of the bed 2. The arm portion 4 extends leftward from the upper end portion of the pedestal column portion 3 and faces the upper surface of the bed portion 2. The arm part 4 includes a tip part 5 at the left end part. The tip portion 5 extends downward.

  The bed part 2 is provided with a needle plate 15 at the upper part on the left end side. As shown in FIG. 2, the needle plate 15 has a needle hole 16 on the left end side. The needle plate 15 opens a feed dog hole 21 around the needle hole 16. The bed portion 2 includes a sewing machine motor 13 (see FIG. 3), a transfer mechanism 50, a rotary hook (not shown), a thread trimming mechanism (not shown), and the like. The drive shaft of the sewing machine motor 13 is connected to the lower shaft pulley 36 of the transfer mechanism 50. Details of the transfer mechanism 50 will be described later. The rotary hook is fitted with a bobbin case (not shown). The bobbin case accommodates a bobbin (not shown) wound with a lower thread. Since the configuration of the rotary hook and the thread trimming mechanism is well known, description thereof is omitted.

  As shown in FIG. 1, the pedestal portion 3 includes an operation unit 10 and a display unit 11 on the front surface. The display unit 11 displays a screen showing information including various items such as commands, setting values, and messages. The display unit 11 includes a transparent touch panel 12 on the front surface. The touch panel 12 receives an input of an operation using a finger or a dedicated stylus pen. When the touch panel 12 receives an operation input, the touch panel 12 outputs coordinate data indicating the operation input position to the CPU 41 (see FIG. 3) of the sewing machine 1. Based on the coordinate data acquired from the touch panel 12, the CPU 41 recognizes an item selected by the user on the screen displayed on the display unit 11, and executes a corresponding process. Hereinafter, an operation input to the touch panel 12 is referred to as “panel operation”. Unless otherwise specified, the panel operation is a so-called “touch” panel operation in which an input to the target display area in the screen is received by the touch panel 12 and release of the input state is received within a predetermined time. The operation unit 10 receives input of various instructions. The operation unit 10 includes a setting key 10A and a home key 10B. When the CPU 41 of the sewing machine 1 (see FIG. 3) receives an operation on the setting key 10A, the CPU 41 (see FIG. 3) displays a setting menu screen 65 (see FIG. 4) for performing various settings of the sewing machine 1 on the display unit 11. When the CPU 41 receives an operation on the home key 10B, the CPU 41 displays the home screen 60 (see FIG. 4) on the display unit 11.

  The pedestal 3 is attached with a pulley cover 9 on the right side surface. The pulley cover 9 bulges to the right of the pedestal 3. The pulley cover 9 has an opening 6 in the lower part of the front surface. The opening 6 has a power switch (not shown) of the sewing machine 1 disposed inside.

  The arm unit 4 includes an upper shaft (not shown) and the like inside. The upper shaft extends in the left-right direction. The right end of the upper shaft is connected to the pulley 14 via an upper shaft pulley (not shown). The pulley 14 is provided on the right side surface of the pedestal 3 and protrudes rightward from the pulley cover 9. The timing belt (not shown) is provided inside the pedestal 3. The timing belt is an annular belt. The upper shaft pulley is connected to the lower shaft pulley 36 via a timing belt.

  The distal end portion 5 includes a balance mechanism (not shown), a needle bar vertical movement mechanism (not shown), and the like. The needle bar vertical movement mechanism is connected to the left end of the upper shaft. The upper shaft drives the balance mechanism via a needle bar vertical movement mechanism. Since the configuration of the balance mechanism is well known, description thereof is omitted. The needle bar vertical movement mechanism includes a needle bar 7. The needle bar 7 is located above the needle plate 15. The lower end portion of the distal end portion 5 faces the needle plate 15. The lower end portion of the needle bar 7 is exposed from the lower side of the distal end portion 5 and extends downward. The needle bar 7 has a sewing needle 8 attached to the lower end. The needle bar vertical movement mechanism reciprocates the needle bar 7 and the sewing needle 8 up and down as the upper shaft rotates. When the needle bar 7 is lowered, the lower end of the sewing needle 8 passes through the needle hole 16 (see FIG. 2) and reaches the upper portion of the rotary hook. The rotary hook cooperates with the needle bar 7 and entangles the lower thread drawn from the bobbin case with the upper thread held by the sewing needle 8. The balance mechanism pulls the upper thread entangled with the lower thread onto the needle plate 15 to form a stitch on the work cloth.

  The tip 5 supports the presser bar 18 at the lower end. The presser bar 18 is located behind the needle bar 7. The presser bar 18 extends in the vertical direction. The presser bar 18 supports the presser foot 17 at the lower end. The presser foot 17 faces the feed dog 34 (see FIG. 2) of the transfer mechanism 50. A presser foot drive mechanism (not shown) is provided inside the distal end portion 5. The presser foot drive mechanism moves the presser bar 18 up and down.

  The sewing machine 1 includes a control device 30 (see FIG. 3) below the table. The control device 30 is connected to a step-down pedal 22 (see FIG. 3) via a rod (not shown). The pedal 22 receives an input of an operation in the user's toe or heel direction. The CPU 41 mounted on the control device 30 controls the operation of the sewing machine motor 13 according to the operation amount of the stepping operation of the user's pedal 22 in the toe direction. The CPU 41 drives a thread trimming device (not shown) according to the user's stepping back operation of the pedal 22 in the heel direction.

  The configuration of the transfer mechanism 50 will be described. As shown in FIG. 2, the transfer mechanism 50 includes a feed base 33, a vertical transfer mechanism 35, a feed dog 34, and a horizontal transfer mechanism 25. The feed base 33 is disposed below the needle plate 15 so as to be substantially parallel to the needle plate 15. The feed dog 34 is fixed to the center of the upper surface of the feed base 33. The feed dog 34 extends in the front-rear direction and has an uneven portion at the top. The uneven portion of the feed dog 34 is located in the feed dog hole 21. The length of the feed dog 34 in the front-rear direction is shorter than the length of the feed dog hole 21. At the time of sewing, the feed base 33 projects the uneven portion of the feed dog 34 from the feed dog hole 21 onto the needle plate 15 and sandwiches the work cloth between the presser foot 17 (see FIG. 1).

  The vertical transfer mechanism 35 includes a vertical feed shaft 37, an eccentric portion 38, and a link member 39. The bed 2 (see FIG. 1) supports the vertical feed shaft 37 so as to be rotatable. The vertical feed shaft 37 extends in the left-right direction parallel to the upper shaft. The right end of the vertical feed shaft 37 is connected to the lower shaft pulley 36. The sewing machine motor 13 drives the vertical feed shaft 37 to rotate. The upper shaft rotates in synchronization with the vertical feed shaft 37 via the timing belt.

  The eccentric portion 38 is provided at the left end of the vertical feed shaft 37. The eccentric portion 38 is eccentric with respect to the axis of the vertical feed shaft 37. The link member 39 is rotatably connected to the rear end of the feed base 33. The link member 39 holds the eccentric portion 38 rotatably. When the vertical feed shaft 37 rotates, the eccentric portion 38 moves the feed base 33 in the vertical direction via the link member 39. The vertical movement of the feed bar 33 is mechanically synchronized with the vertical movement of the needle bar 7. Therefore, the feed base 33 reciprocates up and down while the needle bar 7 reciprocates up and down once.

  The horizontal transfer mechanism 25 includes a cloth feed motor 23, a link mechanism unit 40, a horizontal feed shaft 28, and a link member 31. The cloth feed motor 23 is provided in the bed portion 2 and is disposed on the right side of the feed base 33. The drive shaft 24 of the cloth feed motor 23 extends in the left-right direction. The cloth feed motor 23 is a pulse motor, and reciprocates the drive shaft 24 within a predetermined angle range. The cloth feed motor 23 moves the feed base 33 in the front-rear direction.

  The link mechanism unit 40 includes a first arm unit 26, a second arm unit 27, and an intermediate action arm 29. One end of the first arm portion 26 is fixed to the tip of the drive shaft 24. The first arm portion 26 extends orthogonally to the drive shaft 24. The other end of the first arm portion 26 is rotatably connected to one end of the second arm portion 27. The other end of the second arm portion 27 is rotatably connected to one end of the intermediate working arm 29. The other end of the intermediate working arm 29 is fixed to the right end of the horizontal feed shaft 28. The bed portion 2 supports the horizontal feed shaft 28 so as to be rotatable to the upper left of the cloth feed motor 23. The horizontal feed shaft 28 extends in the left-right direction in parallel with the vertical feed shaft 37. When the cloth feed motor 23 is driven and the drive shaft 24 reciprocates within a predetermined angle range, the other end of the first arm portion 26 moves in the front-rear direction. The first arm portion 26 swings one end of the intermediate working arm 29 in the vertical direction via the second arm portion 27. Therefore, the horizontal feed shaft 28 reciprocates within a predetermined angle range as the intermediate action arm 29 swings.

  The lower end of the link member 31 is fixed to the left end portion of the horizontal feed shaft 28. The link member 31 extends upward perpendicular to the horizontal feed shaft 28. The upper end of the link member 31 is rotatably connected to the front end of the feed base 33. When the horizontal feed shaft 28 reciprocates within a predetermined angle range, the feed base 33 reciprocates in the front-rear direction via the link member 31.

  When the feed base 33 is raised, the uneven portion of the feed dog 34 protrudes from the feed dog hole 21 onto the needle plate 15. The feed base 33 sandwiches a work cloth between the uneven portion and the presser foot 17. The needle bar 7 that moves up and down in synchronization with the feed bar 33 moves the sewing needle 8 upward when the feed bar 33 moves up. While the uneven portion of the feed dog 34 protrudes on the needle plate 15, the sewing needle 8 does not pierce the work cloth. The CPU 41 of the control device 30 drives the cloth feed motor 23 in synchronization with the sewing machine motor 13. The CPU 41 drives the cloth feed motor 23 while the uneven portion of the feed dog 34 protrudes on the needle plate 15. The feed dog 34 moves in the front-rear direction to transfer the work cloth in the front-rear direction. When the feed base 33 is lowered, the uneven portion of the feed dog 34 moves back and forth below the needle plate 15. The presser foot 17 is positioned by sandwiching a work cloth between the upper surface of the needle plate 15. The needle bar 7 moves the sewing needle 8 downward while the feed base 33 is lowered. The sewing needle 8 forms a stitch on the work cloth in cooperation with the rotary hook.

  The CPU 41 controls driving of the sewing machine motor 13 and the cloth feed motor 23. The CPU 41 can adjust the rotation angle phase of the drive shaft 24 of the cloth feed motor 23 with respect to the drive shaft of the sewing machine motor 13. Therefore, the CPU 41 can change the moving direction of the feed dog 34 while the uneven portion of the feed dog 34 protrudes on the needle plate 15 to the front or the rear. Further, the CPU 41 can adjust the amount of movement of the feed dog 34 in the front-rear direction by adjusting the rotation range of the drive shaft 24 of the cloth feed motor 23. Therefore, the CPU 41 can adjust the pitch for transferring the work cloth forward or backward during one up-and-down movement of the sewing needle 8.

  The electrical configuration of the sewing machine 1 will be described with reference to FIG. The control device 30 of the sewing machine 1 includes a CPU 41, a ROM 42, a RAM 43, a flash memory 44, and an input / output interface (hereinafter referred to as “I / O”) 45. The CPU 41 is electrically connected to the ROM 42, RAM 43, flash memory 44, and I / O 45. The CPU 41 controls the sewing machine 1. The CPU 41 executes various calculations and processes related to sewing according to various programs stored in the ROM 42. The ROM 42 stores various programs, various initial setting parameters, and the like. The ROM 42 stores a screen display program (see FIGS. 7 to 9) and a sewing program (see FIG. 11). The RAM 43 temporarily stores calculation results of the CPU 41, pointers, counters, and the like. The flash memory 44 is a non-volatile memory that stores various setting information input by the user. The various setting information includes information such as a pitch (normal pitch), the number of stitches (the number of fixed-size needles), the number of rotations, a sewing pattern in pattern sewing, and the like. The rotational speed is the rotational speed of the drive shaft of the sewing machine motor 13. The sewing machine 1 of the present embodiment has five types of sewing patterns that are distinguished by pattern names “DS-1” to “DS-5”. The flash memory 44 is provided with storage areas for five types of sewing patterns.

  The CPU 41 is connected to the pedal 22, the operation unit 10, the drive circuits 51 to 54, the sewing machine encoder 55, and the cloth feed encoder 56 via the I / O 45. The pedal 22 detects an operation input by the user and outputs a detection signal. The operation unit 10 receives an input of an operation on the setting key 10A, the home key 10B, and the like, and transmits an acceptance signal to the CPU 41. The drive circuit 51 drives the display unit 11 according to a control signal received from the CPU 41 and displays various screens on the display unit 11. The drive circuit 52 operates the touch panel 12 and outputs coordinate data of an operation input position to the CPU 41. The drive circuit 53 is connected to the sewing machine motor 13 and drives the sewing machine motor 13 in accordance with a control signal received from the CPU 41. The sewing machine encoder 55 is provided on the drive shaft of the sewing machine motor 13. The sewing encoder 55 detects the rotation angle phase and rotation speed of the drive shaft of the sewing machine motor 13 and outputs the detected rotation angle to the CPU 41. The drive circuit 54 is connected to the cloth feed motor 23 and drives the cloth feed motor 23 in accordance with a control signal received from the CPU 41. The cloth feed encoder 56 is provided on the drive shaft 24 of the cloth feed motor 23. The cloth feed encoder 56 detects the rotation angle phase and the rotation speed of the drive shaft 24 and outputs them to the CPU 41.

  With reference to FIG. 4, the transition of the screen which CPU41 displays a screen display program 11 by executing a screen display program is demonstrated. The home screen 60 is a screen that the CPU 41 displays on the display unit 11 when the user turns on the sewing machine 1. The home screen 60 displays various information related to sewing. The home screen 60 has a pitch display area 61. The pitch display area 61 is provided at the upper left in the home screen 60. The pitch display area 61 is an area for displaying a normal pitch applied in a normal sewing mode in which normal sewing is performed. The home screen 60 also has an area for displaying the number of rotations of the sewing machine motor 13, an area for displaying keys for receiving various instructions such as front backtacking, backtack sewing, and thread trimming prohibition.

  The setting menu screen 65 is a screen that is displayed when the CPU 41 receives an operation of the setting key 10 </ b> A while the home screen 60 is being displayed. The setting menu screen 65 displays a plurality of menu keys that accept selection of various settings related to sewing. The setting menu screen 65 has a return key display area 66, a menu key display area 67, and a scroll key display area 68. The return key display area 66 is provided at the upper right in the setting menu screen 65. The return key display area 66 is an area for receiving a panel operation for switching to the display of the home screen 60 while the setting menu screen 65 is being displayed. The menu key display area 67 is an area for displaying a plurality of menu keys for switching the display on each screen for performing various settings and receiving a panel operation for selecting one menu key. The plurality of menu keys include a design stitch registration key 67A. The menu key display area 67 is provided almost in the entire setting menu screen 65. The scroll key display area 68 is provided at the right end of the menu key display area 67. The scroll key display area 68 is an area for receiving a panel operation for scrolling and displaying a menu key not displayed in the menu key display area 67 on the screen. The CPU 41 displays the home screen 60 on the display unit 11 when receiving an operation on the home key 10B while the setting menu screen 65 is being displayed.

  The design stitch registration screen 70 is a screen that is displayed when the CPU 41 receives a panel operation for the design stitch registration key 67A while the setting menu screen 65 is being displayed. The design stitch registration screen 70 displays a plurality of menu keys for accepting selection of storage areas for registering five types of sewing patterns. The five types of sewing patterns can be used in a special sewing mode in which pattern sewing is performed. The design stitch registration screen 70 has a return key display area 71, a menu key display area 72, and a scroll key display area 73. The return key display area 71 is provided at the upper right in the design stitch registration screen 70. The return key display area 71 is an area for receiving a panel operation for switching to the display of the setting menu screen 65 while the design stitch registration screen 70 is displayed. The menu key display area 72 is provided in almost the entire area within the design stitch registration screen 70. The menu key display area 72 is an area for displaying a plurality of menu keys for switching the display on the editing screen of each of the plurality of sewing patterns and receiving a panel operation for selecting one menu key. The plurality of menu keys include a DS-1 edit key 72A. The scroll key display area 73 is provided on the right side of the menu key display area 72. The scroll key display area 73 is an area for receiving a panel operation for scrolling and displaying a menu key that is not displayed in the menu key display area 72 on the screen. The CPU 41 displays the home screen 60 on the display unit 11 when receiving an operation on the home key 10B while the design stitch registration screen 70 is being displayed.

  The design stitch edit screen 75 is a screen that is displayed when the CPU 41 receives a panel operation for the menu key displayed in the menu key display area 72 while the design stitch registration screen 70 is being displayed. Hereinafter, an example will be described in which a panel operation on the DS-1 edit key 72A is received and “DS-1” is selected as the sewing pattern to be edited. The design stitch edit screen 75 is a screen for accepting editing of a selected sewing pattern. In the present embodiment, one sewing pattern can be set with eight patterns in which the pitch (pattern pitch) and the number of needles (number of pattern needles) are associated with each other. Details of the sewing pattern will be described later. The design stitch edit screen 75 has a return key display area 76, a pattern display area 77, and an edit key display area 78. The return key display area 76 is provided at the upper right in the design stitch edit screen 75. The return key display area 76 is an area for receiving a panel operation for switching to the display of the design stitch registration screen 70 while the design stitch edit screen 75 is displayed.

  The pattern display area 77 is provided in almost the entire area within the design stitch edit screen 75. The pattern display area 77 is an area for displaying eight sets of patterns included in one sewing pattern. The pattern display area 77 of the present embodiment can display two sets of eight patterns. In the example shown in FIG. 4, 1 and 2 are displayed as numbers of two sets of patterns. The pattern numbers correspond to the pattern numbers G1 and G2 shown in FIG. The pattern display area 77 includes a switching key 77A, a pattern number display part 77B, a pitch display part 77C, and a needle number display part 77D. Switching key 77A accepts a panel operation for switching and displaying two sets of patterns displayed in pattern display area 77 with other patterns. The switching keys 77A are provided in a pair of left and right on the upper stage in the pattern display area 77. When a panel operation on the right switching key 77A is accepted in the state shown in FIG. 4, the numbers of the two sets of patterns displayed in the pattern display area 77 are 3 and 4. The pattern number display section 77B displays the pattern numbers of two sets of patterns displayed in the pattern display area 77. The pitch display section 77C displays the pitches of the two sets of patterns displayed in the pattern display area 77 in association with the pattern numbers. The needle number display section 77D displays the number of pattern needles of the two sets of patterns displayed in the pattern display area 77 in association with the pattern numbers. The pattern number display section 77B, the pitch display section 77C, and the needle number display section 77D are provided side by side at the approximate center in the pattern display area 77.

  The edit key display area 78 is provided on the right side of the pattern display area 77. The edit key display area 78 is an area for receiving a panel operation for editing the pattern pitch of the pitch display section 77C activated in the pattern display area 77 or the number of pattern needles of the needle number display section 77D. Activation is a process for editing one of the pattern pitch or the number of pattern needles displayed in the pattern display area 77. Pitch display portion 77C and stitch number display portion 77D can accept panel operations to be activated. The CPU 41 reversely displays the activated pattern pitch or number of pattern needles in the pattern display area 77. The edit key display area 78 has a [+] key 78A and a [−] key 78B. The [+] key 78A accepts a panel operation for increasing the pattern pitch of the activated pitch display portion 77C or the number of pattern stitches of the stitch number display portion 77D by a predetermined value. [−] Key 78B accepts a panel operation to decrease the pattern pitch of activated pitch display portion 77C or the value of the number of pattern stitches of stitch number display portion 77D by a predetermined value. The pattern pitch in pattern sewing can be set in the range of −5.00 to 5.00 [mm], for example. The increase / decrease value of the pattern pitch in one operation is 0.05 mm. The increase / decrease value of the number of pattern needles in one operation is 1. The CPU 41 stores the edited value of the pattern pitch or the number of pattern needles in the flash memory 44. The CPU 41 displays the home screen 60 on the display unit 11 when receiving an operation on the home key 10B while the design stitch edit screen 75 is being displayed.

  The main section setting screen 80 is a screen that is displayed when the CPU 41 receives a “long press” panel operation for the pitch display area 61 while the home screen 60 is being displayed. The long-press panel operation is an operation of accepting an input that has been continued for a predetermined time or more by the touch panel 12 with respect to a target display area in the screen. The main part setting screen 80 is a screen for accepting editing of a normal pitch in normal sewing. The main part setting screen 80 includes a return key display area 81, a pitch display area 82, a sewing shape display area 83, an edit key display area 84, an arrow key display area 85, and a rotation speed display area 86. The return key display area 81 is provided at the upper right in the main part setting screen 80. The return key display area 81 is an area for receiving a panel operation for switching to the display of the home screen 60 while the main part setting screen 80 is being displayed. The pitch display area 82 is provided at the lower left in the main part setting screen 80. The pitch display area 82 is an area for displaying a normal pitch applied in a normal sewing mode in which normal sewing is performed. The pitch display area 82 is also an area for displaying the pattern name of the sewing pattern in the special sewing mode for performing pattern sewing. The CPU 41 can display the design stitch edit screen 75 on the display unit 11 when a panel operation of “long press” on the pitch display area 82 is received while the pattern name of the sewing pattern is displayed in the pitch display area 82. it can. The pitch display area 82 can accept panel operations to be activated. When activated, the CPU 41 reverse-displays the normal pitch or pattern name in the pitch display area 82. The sewing shape display area 83 is provided at the center in the main part setting screen 80. The sewing shape display area 83 is an area for displaying a sewing shape to be sewn. The sewing shape includes fixed-size sewing, continuous sewing, and the like. As shown in FIG. 5, the sewing shape display area 83 displays the sewing shape to be sewn with an arrow along the transfer direction. The arrow points in the direction in which the seam is formed on the work cloth. That is, when the work cloth is transferred backward, the arrow displayed in the sewing shape display area 83 is downward. In the case of fixed-size sewing, the sewing shape display area 83 displays an arrow along the transfer direction with a solid line, and displays the number of fixed-size needles on the right side thereof. The sewing shape display area 83 displays an arrow along the transfer direction with a broken line in the case of continuous sewing. The sewing shape display area 83 can accept a panel operation to be activated with respect to the number of fixed-size stitches in the case of fixed-size sewing. When the CPU 41 is activated, the CPU 41 reversely displays the number of fixed stitches in the sewing shape display area 83.

  The edit key display area 84 is provided on the right side of the sewing shape display area 83. The edit key display area 84 is a panel operation for editing the normal pitch of the pitch display area 82 activated on the main part setting screen 80, the number of constant stitches of the sewing shape display area 83, or the rotation speed of the rotation speed display area 86. It is an area to accept. The edit key display area 84 has a [+] key 84A and a [−] key 84B. The [+] key 84A accepts a panel operation for increasing the normal pitch of the activated pitch display area 82, the fixed stitch number of the sewing shape display area 83, or the rotation speed value of the rotation speed display area 86 by a predetermined value. . The [−] key 84B accepts a panel operation for decreasing the value of the normal pitch of the activated pitch display area 82, the number of constant stitches of the sewing shape display area 83, or the rotation speed of the rotation speed display area 86 by a predetermined value. . The normal pitch in normal sewing can be set in the range of 0.05 to 5.00 [mm], for example. The arrow key display area 85 is provided as a pair on the left and right sides of the sewing shape display area 83, and displays a triangle arrow pointing to the left and right. The arrow key display area 85 accepts a panel operation for changing the sewing shape. As shown in FIG. 5, when the sewing shape is fixed stitch, when the panel operation to the right-pointing triangular arrow in the arrow key display area 85 is accepted, the sewing shape is changed to continuous stitching. When the sewing shape is continuous stitching, when the panel operation to the left triangle arrow in the arrow key display area 85 is accepted, the sewing shape is changed to fixed stitch. The rotation speed display area 86 is provided on the right side of the pitch display area 82. The rotation speed display area 86 is an area for displaying the rotation speed of the sewing machine motor 13. The rotation speed display area 86 can accept a panel operation to be activated. When activated, the CPU 41 reversely displays the rotation speed in the rotation speed display area 86. The CPU 41 stores the edited values of the normal pitch, sewing shape, and rotation speed in the flash memory 44. The CPU 41 stores the number of fixed stitches in the flash memory 44 when the sewing shape is fixed stitch. When the CPU 41 accepts an operation on the home key 10 </ b> B while the main part setting screen 80 is being displayed, the CPU 41 displays the home screen 60 on the display unit 11.

  With reference to FIG. 6, an example of a sewing pattern for pattern sewing will be described. As described above, eight sets of patterns in which the pattern pitch and the number of pattern needles are associated can be set for one sewing pattern. For example, “DS-2”, which is one of the sewing patterns, sets the pattern pitch and the number of pattern needles in each of the pattern numbers G1 to G8. The pattern of G1 has a pattern pitch of 1.00 mm and the number of pattern needles. The pattern of G2 has a pattern pitch of 2.00 mm and the number of pattern needles is two. The pattern of G3 has a pattern pitch of 5.00 mm and two pattern needles. The pattern of G4 has a pattern pitch of −3.00 mm and the number of pattern needles is one. The pattern of G5 has a pattern pitch of 1.00 mm, and the number of pattern needles is two. The pattern of G6 has a pattern pitch of 4.00 mm and two pattern stitches. The pattern of G7 has a pattern pitch of -2.00 mm and the number of pattern needles. The pattern of G8 has a pattern pitch of -1.00 mm, and the number of pattern needles is two. When the pattern pitch is a positive value, the sewing machine 1 reciprocally rotates the drive shaft 24 of the cloth feed motor 23 in the direction in which the work cloth W is transferred in the positive direction, that is, from the front to the rear. When the pattern pitch is a negative value, the sewing machine 1 reciprocally rotates the drive shaft 24 of the cloth feed motor 23 in the direction in which the work cloth W is transferred in the reverse direction, that is, from the rear to the front. When the sewing machine 1 sews according to the sewing pattern, the sewing machine 1 sews eight sets of patterns in the order of pattern numbers.

  The sewing machine 1 moves the work cloth W backward by 1.00 mm between the up and down movements of the needle bar 7 in accordance with the pattern of G1, and forms the stitch P1. In accordance with the pattern G2, the sewing machine 1 transfers the work cloth W backward by 2.00 mm twice each time the needle bar 7 moves up and down twice to form the stitches P2 and P3. The sewing machine 1 transfers the work cloth W backward by 5.00 mm twice between the two vertical movements of the needle bar 7 according to the pattern of G3 to form the stitches P4 and P5. The sewing machine 1 moves the work cloth W forward 3.00 mm between the up and down movements of the needle bar 7 according to the pattern of G4, and forms a stitch P6. In accordance with the pattern G5, the sewing machine 1 transfers the work cloth W backward by 1.00 mm twice between the two vertical movements of the needle bar 7 to form the stitches P7 and P8. In accordance with the pattern G6, the sewing machine 1 transfers the work cloth W backward by 4.00 mm twice between the two vertical movements of the needle bar 7 to form the stitches P9 and P10. The sewing machine 1 moves the work cloth W forward by 2.00 mm between the up and down movements of the needle bar 7 according to the pattern of G7, and forms the stitch P11. The sewing machine 1 moves the work cloth W forward by 1.00 mm twice between the two vertical movements of the needle bar 7 according to the pattern of G8, and forms the stitches P12 and P13.

  In the sewing pattern, when the number of pattern needles of one pattern is set to 0, the sewing machine 1 performs sewing according to the pattern preceding the pattern number of the pattern in which the number of pattern needles is set to 0. The sewing machine 1 invalidates the pattern after the pattern in which the number of pattern stitches is set to 0 and does not perform sewing. For example, when the number of pattern stitches of the G4 pattern is set to 0, the sewing machine 1 sews according to the patterns G1 to G3 to form the stitches P1 to P5. The sewing machine 1 invalidates the patterns G4 to G8 and does not sew, and does not form the stitches P6 to P13.

  Processing performed by the sewing machine 1 according to the screen display program will be described with reference to FIGS. When the user turns on the power switch of the sewing machine 1, the CPU 41 reads various programs including a screen display program (see FIG. 7) and a sewing program (see FIG. 11) from the ROM 42 and executes them. In executing the screen display program, the sewing machine 1 switches between a normal sewing mode in which normal sewing is performed and a special sewing mode in which pattern sewing is performed according to conditions. When the sewing program is executed, the sewing machine 1 performs normal sewing in the normal sewing mode and pattern sewing in the special sewing mode when the user depresses the pedal 22.

  As shown in FIG. 7, the CPU 41 of the sewing machine 1 executes a screen display program and sets a normal sewing mode for performing normal sewing as an initial setting (S1). The CPU 41 displays the home screen 60 on the display unit 11 (S2). The CPU 41 reads the normal pitch stored in the flash memory 44 and displays it in the pitch display area 61. The CPU 41 continues to display the home screen 60 and waits for panel operation or reception of an operation to the operation unit 10 (S3: NO, S5: NO, S2). When the long press panel operation for the pitch display area 61 is received (S5: YES), the CPU 41 advances the process to S6.

  CPU41 displays the main part setting screen 80 on the display part 11 (S6). The CPU 41 reads the normal pitch and the sewing shape stored in the flash memory 44 and displays them in the pitch display area 82 and the sewing shape display area 83, respectively. The CPU 41 activates the pitch display area 82. The CPU 41 continues to display the main part setting screen 80 and waits for panel operation or reception of an operation on the operation unit 10 (S7: NO, S10: NO, S11: NO, S12: NO, S15: NO, S18: NO, S20: NO, S6). If the user depresses the pedal 22 in this state, the sewing machine 1 sews the work cloth by normal sewing.

  If the panel operation received while the main part setting screen 80 is displayed is a panel operation for the arrow key display area 85 (S7: YES), the CPU 41 changes the sewing shape (S8). The CPU 41 displays the changed sewing shape in the sewing shape display area 83, and returns the process to S6. When the panel operation for the pitch display area 82 is received during the display of the main part setting screen 80 (S10: YES), the CPU 41 advances the process to S16. If the panel operation on the pitch display area 82 is not a long press panel operation (S16: NO), the CPU 41 activates the pitch display area 82 (S13), and returns the process to S6.

  When the panel operation for the pitch display area 82 is a long-press panel operation (S16: YES), the CPU 41 determines whether or not the sewing mode is the special sewing mode (S17). If the normal pitch is displayed in the pitch display area 82 and the sewing mode is the normal sewing mode (S17: NO), the CPU 41 proceeds to S13 and activates the pitch display area 82. If the pattern name of the sewing pattern is displayed in the pitch display area 82 and the sewing mode is the special sewing mode (S17: YES), the CPU 41 proceeds to S37 and displays the design stitch edit screen 75 on the display unit 11 (S37). . Processing when the design stitch edit screen 75 is displayed will be described later.

  When a panel operation for the rotation speed display area 86 is received during display of the main part setting screen 80 (S11: YES), the CPU 41 activates the rotation speed display area 86 (S13), and returns the process to S6. When a panel operation for the number of fixed stitches in the sewing shape display area 83 is received during display of the main part setting screen 80 (S12: YES), the CPU 41 activates the number of fixed stitches in the sewing shape display area 83 (S13). ), The process is returned to S6.

  When a panel operation for the edit key display area 84 is received during display of the main part setting screen 80 (S15: YES), the CPU 41 advances the process to S21. When the activated item is the pitch display area 82 and the normal pitch is the upper limit value (5.00 mm), when the panel operation of the [+] key 84A is received (S21: YES), the CPU 41 performs the processing. Proceed to S22. CPU41 sets special sewing mode (S22), and returns processing to S6. As shown in FIG. 10, the CPU 41 displays the pattern name “DS-1” of the sewing pattern in the pitch display area 82. If the user depresses the pedal 22 in this state, the sewing machine 1 performs pattern sewing according to the DS-1 sewing pattern on the work cloth. If the panel operation on the edit key display area 84 is not the panel operation of the [+] key 84A when the normal pitch is the upper limit (5.00 mm) (S21: NO), the CPU 41 advances the process to S23.

  When the activated area is the pitch display area 82 and “DS-1” is displayed in the pitch display area 82, when the panel operation of the [−] key 84B is received (S23: YES), the CPU 41 To S25. As shown in FIG. 10, the CPU 41 displays the upper limit value (5.00 mm) of the normal pitch in the pitch display area 82 and sets the normal sewing mode (S25). The CPU 41 returns the process to S6. If the user depresses the pedal 22 in this state, the sewing machine 1 sews on the work cloth by normal sewing according to the sewing shape displayed in the sewing shape display area 83.

  The panel operation for the edit key display area 84 is not the operation of the [+] key 84A when the upper limit value of the normal pitch is displayed in the pitch display area 82 (S21: NO), but “DS-1” is displayed in the pitch display area 82. When the [-] key 84B is not operated when displaying (S23: NO), the CPU 41 advances the process to S26. When the panel operation is the operation of the [+] key 84A, the CPU 41 increases the value of the activated item, that is, the normal pitch, the number of fixed stitches or the number of rotations by a predetermined value. When the panel operation is the operation of the [−] key 84B, the CPU 41 decreases the value of the activated item, that is, the normal pitch, the number of fixed stitches or the number of rotations by a predetermined value (S26). When the pitch display area 82 is activated and the panel operation of the [+] key 84A is accepted when displaying the pattern name of the sewing pattern, the CPU 41 sets the pattern name of the sewing pattern displayed in the pitch display area 82 in ascending order. Change the display. For example, when the pattern name “DS-1” of the sewing pattern is displayed in the pitch display area 82, when the panel operation of the [+] key 84A is accepted, the CPU 41 displays the pattern name “DS− of the sewing pattern in the pitch display area 82. 2 ”is displayed. When the pitch display area 82 is activated and the panel operation of the [−] key 84B is accepted when displaying the pattern name of the sewing pattern, the CPU 41 sets the pattern names of the sewing patterns displayed in the pitch display area 82 in descending order. Change the display. For example, when displaying the pattern name “DS-2” of the sewing pattern in the pitch display area 82, when the panel operation of the [−] key 84 B is accepted, the CPU 41 displays the pattern name “DS− of the sewing pattern in the pitch display area 82. 1 ”is displayed. The CPU 41 returns the process to S6.

  When the panel operation for the return key display area 81 is received during the display of the main part setting screen 80 (S18: YES), the CPU 41 returns the process to S2 and displays the home screen 60. When an operation on the home key 10B is received while the main part setting screen 80 is displayed (S20: YES), the CPU 41 returns the process to S2 and displays the home screen 60. When returning to the home screen 60, if it is the normal sewing mode, the CPU 41 displays the normal pitch in the pitch display area 61. When returning to the home screen 60, if it is in the special sewing mode, the CPU 41 displays the pattern name of the sewing pattern in the pitch display area 61. If the user depresses the pedal 22 while the home screen 60 is displayed, the sewing machine 1 sews the work cloth by normal sewing according to the normal sewing mode or pattern sewing according to the special sewing mode.

  When the operation of the setting key 10A is received while the home screen 60 is displayed (S3: YES), the CPU 41 advances the process to S27. As shown in FIG. 8, the CPU 41 displays a setting menu screen 65 on the display unit 11 (S27). The CPU 41 continues to display the setting menu screen 65 and waits for panel operation or reception of an operation on the operation unit 10 (S28: NO, S30: NO, S31: NO, S27). When the panel operation for the return key display area 66 is received while the setting menu screen 65 is displayed (S30: YES), the CPU 41 returns the process to S2 and displays the home screen 60. When an operation on the home key 10B is received while the setting menu screen 65 is displayed (S31: YES), the CPU 41 returns the process to S2 and displays the home screen 60. If the panel operation received while the setting menu screen 65 is displayed is a panel operation for selecting the design stitch registration key 67A to be displayed in the menu key display area 67 (S28: YES), the CPU 41 advances the process to S32.

  The CPU 41 displays the design stitch registration screen 70 on the display unit 11 (S32). The CPU 41 continues to display the design stitch registration screen 70 and waits for panel operation or reception of an operation to the operation unit 10 (S33: NO, S35: NO, S36: NO, S32). When a panel operation for the key display area 71 that is returned during display of the design stitch registration screen 70 is received (S35: YES), the CPU 41 returns the process to S27 and displays the setting menu screen 65. When an operation on the home key 10B is received during the display of the design stitch registration screen 70 (S36: YES), the CPU 41 returns the process to S2 and displays the home screen 60. If the panel operation received during the display of the design stitch registration screen 70 is a panel operation for selecting one of the menu keys “DS-1” to “DS-5” displayed in the menu key display area 72 (S33). : YES), CPU41 advances a process to S37.

  The CPU 41 displays a design stitch edit screen 75 corresponding to the sewing pattern selected by the user in S33 on the display unit 11 (S37). As described above, when the main part setting screen 80 is being displayed, when a long press panel operation on the pitch display area 82 is accepted and the special sewing mode is selected (S16: YES, S17: YES), the CPU 41 A design stitch edit screen 75 is displayed. The CPU 41 activates one of the two pitch display portions 77C displayed in the pattern display area 77. The CPU 41 continues to display the design stitch edit screen 75 and waits for panel operation or reception of an operation on the operation unit 10 (S38: NO, S40: NO, S42: NO, S50: NO, S51: NO, S37). . When the panel operation for the return key display area 76 is received while the design stitch edit screen 75 is displayed (S50: YES), the CPU 41 returns the process to S32 and displays the design stitch registration screen 70.

  When the panel operation for the switch key 77A is received during the display of the design stitch edit screen 75, the CPU 41 switches between two sets of patterns to be displayed in the pattern display area 77 according to the operation. When a panel operation for the pitch display portion 77C is received during the display of the design stitch edit screen 75 (S38: YES), the CPU 41 is the pattern on the side that has received the operation of the two patterns displayed in the pattern display area 77. Is activated (S41), and the process returns to S37. Similarly, when the panel operation for the needle number display portion 77D is received (S40: YES), the CPU 41 displays the needle number display portion of the pattern on the side that has received the operation from the two sets of patterns displayed in the pattern display area 77. 77D is activated (S41), and the process returns to S37.

  When a panel operation for the edit key display area 78 is received while the design stitch edit screen 75 is displayed (S42: YES), the CPU 41 advances the process to S43. When the panel operation is an operation of the [+] key 78A, the CPU 41 increases the pattern pitch of the activated pitch display portion 77C or the number of pattern needles of the stitch number display portion 77D by a predetermined value. When the panel operation is an operation of the [−] key 78B, the CPU 41 decreases the pattern pitch of the activated pitch display portion 77C or the number of pattern needles of the stitch number display portion 77D by a predetermined value (S43). When the activated area is the stitch number display section 77D and the number of pattern stitches is decreased from 1 to 0 by the panel operation of the [−] key 78B (S45: YES), the CPU 41 advances the process to S46. The CPU 41 invalidates the pattern after the pattern corresponding to the activated needle number display portion 77D (S46). The CPU 41 returns the process to S37. When the activated area is the stitch number display section 77D and the number of pattern stitches is increased from 0 to 1 by the panel operation of the [+] key 78A (S47: YES), the CPU 41 advances the process to S48. The CPU 41 sets a pattern after the pattern corresponding to the activated needle number display portion 77D to be valid (S48). The CPU 41 returns the process to S37. If the number of pattern stitches is not changed between 0 and 1 by the panel operation on the edit key display area 78 (S45: NO, S47: NO), the CPU 41 returns the process to S37. When the user finishes editing the sewing pattern and operates the home key 10B (S51: YES), the CPU 41 returns the process to S2 and displays the home screen 60. The screen display program ends when the user turns off the power switch of the sewing machine 1.

  A process performed by the sewing machine 1 according to the sewing program will be described with reference to FIG. As described above, when the user turns on the power switch of the sewing machine 1, the CPU 41 reads out the sewing program from the ROM 42 and executes it. The CPU 41 executes the sewing program and the screen display program (see FIG. 7) in parallel. As shown in FIG. 11, the CPU 41 waits for input of various operations (S61). If the user does not operate the pedal 22 and does not receive a detection signal from the pedal 22 (S62: NO), the CPU 41 returns the process to S61 and continues the standby state.

  When the detection signal is received from the pedal 22 (S62: YES), the CPU 41 reads the setting of the rotational speed and the sewing shape from the flash memory 44 and stores it in the RAM 43 (S63). The CPU 41 reads the normal pitch from the flash memory 44 in the normal sewing mode and the sewing pattern in the pattern sewing in the special sewing mode. When the CPU 41 reads each sewing pattern, the CPU 41 reads a plurality of patterns included in each sewing pattern in the order of the pattern number, and if there is a pattern with 0 pattern stitches, stores the pattern read before that pattern in the RAM 43. The CPU 41 sets the pattern with the first pattern number as a processing target in the sewing pattern read into the RAM 43. When the sewing shape read from the flash memory 44 is fixed-size sewing, the CPU 41 reads the number of fixed-size stitches from the flash memory 44 and stores it in the RAM 43.

  The CPU 41 outputs a control signal to the drive circuit 53, drives the sewing machine motor 13 at a rotational speed corresponding to the operation amount of the depression of the pedal 22, and cloth according to the rotation angle phase of the drive shaft of the sewing machine motor 13. The feed motor 23 is driven (S64). The CPU 41 transfers the work cloth by one pitch by the vertical movement of the needle bar 7 and the operation of the feed base 33 to form the stitches. The CPU 41 determines whether or not a needle up signal has been received from the sewing machine encoder 55 (S65). The needle up signal is a signal output from the sewing machine encoder 55 at a phase corresponding to the rotation angle phase of the drive shaft of the sewing machine motor 13 when the needle bar 7 is positioned at the top dead center position in the vertical movement. The needle up signal is turned ON, for example, when the rotation angle phase is in the range of 337.5 ° to 22.5 °. If the CPU 41 does not receive the needle up signal (S65: NO), the CPU 41 determines whether or not the user has performed the pedal 22 return operation based on the detection signal from the pedal 22 (S66). If the pedal 22 is depressed (S66: YES), the CPU 41 returns the process to S61. The CPU 41 stops driving the sewing machine motor 13 and the cloth feed motor 23 and enters a standby state. If the pedal 22 is not depressed (S66: NO), the CPU 41 determines whether or not the user has stopped the stepping operation of the pedal 22 based on the detection signal of the pedal 22 (S81). If the depression signal is not received without receiving the detection signal of the pedal 22 (S81: YES), the CPU 41 returns the process to S61. The CPU 41 stops driving the sewing machine motor 13 and the cloth feed motor 23 and enters a standby state. If the detection signal of the pedal 22 is received and the depression operation of the pedal 22 continues (S81: NO), the CPU 41 returns the process to S64.

  The CPU 41 continues to drive the sewing machine motor 13 and waits until the needle up signal is turned on (S65: NO, S66: NO, S81: NO). If the needle up signal is turned on (S65: YES), the CPU 41 determines whether or not the normal sewing mode is set (S67). If the sewing mode is the normal sewing mode (S67: YES), the CPU 41 determines whether or not the sewing shape stored in the RAM 43 is fixed-size sewing and the number of fixed-size stitches is set (S76). If the sewing shape is continuous stitching (S76: NO), the CPU 41 advances the processing to S66, and while the depression operation of the pedal 22 continues (S66: NO, S81: NO), the needle bar 7 is moved up and down once. Transfer of one pitch of the work cloth by the movement and the operation of the feed base 33 is performed at the normal pitch, and the stitch formation by the normal sewing is continued (S64). When the pedal 22 is depressed in the middle of normal sewing (S66: YES), or when the pedal 22 is depressed (S81: YES), the CPU 41 returns the process to S61. The CPU 41 stops driving the sewing machine motor 13 and the cloth feed motor 23 and enters a standby state.

  In the normal sewing mode, when the sewing shape is constant-dimension stitching and the number of constant-dimension stitches is set (S67: YES, S76: YES), the CPU 41 subtracts 1 from the number of constant-dimension stitches read into the RAM 43 (S77). . The CPU 41 determines whether or not the number of fixed stitches is 0 (S78). If the number of fixed stitches after subtraction is 1 or more (S78: NO), the CPU 41 continues the stitch formation. If the depressing operation of the pedal 22 is not performed (S80: NO) and the depressing operation is continued (S81: NO), the CPU 41 returns the process to S64 and continues the formation of the stitches for one pitch by the normal sewing. At this time, if the pedal 22 is depressed (S80: YES), the CPU 41 advances the process to S82. The CPU 41 reads the setting of the fixed stitch number from the flash memory 44 and resets it in the RAM 43 (S82). At this time, since it is the normal sewing mode (S84: YES), the CPU 41 returns the process to S61. The CPU 41 stops driving the sewing machine motor 13 and the cloth feed motor 23 and enters a standby state.

  If the number of fixed stitches after subtracting 1 in S77 becomes 0 (S78: YES), the CPU 41 advances the process to S82. Similarly to the above, the CPU 41 resets the setting of the number of constant stitches in the RAM 43 (S82), and is in the normal sewing mode (S84: YES), and enters a standby state (S61).

  In the standby state, the pedal 22 is depressed (S62: YES), and in the special sewing mode, the CPU 41 reads a sewing pattern in the pattern sewing (S63). The CPU 41 drives the sewing machine motor 13 and the cloth feed motor 23 to form a stitch for one pitch in the first pattern included in the sewing pattern (S64). When the needle up signal is turned on (S65: YES), if it is in the special sewing mode (S67: NO), the CPU 41 subtracts 1 from the number of pattern stitches of the pattern to be processed (S68). The CPU 41 determines whether or not the number of pattern stitches of the pattern to be processed is 0 (S70). If the number of pattern stitches after subtraction is 1 or more (S70: NO), the CPU 41 advances the process to S76. If the sewing shape read into the RAM 43 is continuous sewing (S76: NO), the CPU 41 repeats sewing according to a plurality of patterns included in the sewing pattern in the order of pattern numbers. If the depressing operation of the pedal 22 is not performed (S66: NO) and the depressing operation is continued (S81: NO), the CPU 41 returns the process to S64 and forms one pitch of stitches in the pattern sewing process target pattern. Continue. When the next needle up signal is received, the CPU 41 subtracts 1 from the number of pattern needles of the pattern to be processed (S65: YES, S67: NO, S68). If the number of pattern stitches after subtraction becomes 0 (S70: YES), the CPU 41 determines whether or not the pattern number of the pattern to be processed is the final pattern in the sewing pattern read into the RAM 43 (S71). . If the pattern to be processed is not the final pattern (S71: NO), the CPU 41 sets the pattern with the next pattern number as the process target (S72). The CPU 41 reads the setting of the number of pattern stitches of the pattern whose target has been changed in S72 from the flash memory 44 and resets it in the RAM 43 (S75), and advances the process to S76.

  The CPU 41 sets the pattern to be processed in the order of the pattern number, and continues the stitch formation by pattern sewing. When the pattern to be processed is the final pattern, the CPU 41 proceeds to S73 if the number of pattern stitches after subtracting 1 in S68 becomes 0 (S70: YES, S71: YES). The CPU 41 sets the pattern with the first pattern number as the processing target (S73). The CPU 41 reads the setting of the number of stitches of the first pattern from the flash memory 44 and resets it in the RAM 43 (S75), and advances the process to S76. If the stepping operation of the pedal 22 is not performed (S66: NO) and the stepping operation is continued (S81: NO), the CPU 41 continues the stitch formation for one pitch in the first pattern to be processed. Thereafter, the CPU 41 repeats the formation of the stitches corresponding to each pattern.

  When the pedal 22 is turned back during pattern sewing (S66: YES) or when the pedal 22 is stopped (S81: YES), the CPU 41 returns the process to S61. The CPU 41 stops driving the sewing machine motor 13 and the cloth feed motor 23 and enters a standby state.

  In the pattern sewing in the special sewing mode, if the sewing shape read in the RAM 43 in S76 is fixed-size sewing and the number of fixed-size stitches is set (S76: YES), the CPU 41 advances the processing to S77. The CPU 41 subtracts 1 from the number of constant stitches (S77), and continues to form stitches for one pitch in the pattern to be processed (S78: NO) as long as the number of constant stitches does not become zero (S78: NO) ( S80: NO, S81: NO, S64). At this time, if the pedal 22 is depressed (S80: YES), the CPU 41 advances the process to S82. The CPU 41 reads the setting of the fixed stitch number from the flash memory 44 and resets it in the RAM 43 (S82). At this time, since it is the special sewing mode (S84: NO), the CPU 41 advances the process to S85. The CPU 41 sets the pattern with the first pattern number as the processing target (S85). The CPU 41 reads the setting of the number of stitches of the first pattern from the flash memory 44 and resets it in the RAM 43 (S86), and returns the process to S61. The CPU 41 stops driving the sewing machine motor 13 and the cloth feed motor 23 and enters a standby state.

  If the number of fixed stitches after subtracting 1 in S77 becomes 0 (S78: YES), the CPU 41 advances the process to S82. As described above, the CPU 41 resets the setting of the number of constant stitches in the RAM 43 (S82), and since it is a special sewing mode (S84: NO), the first pattern number is set as the processing target (S85). The CPU 41 reads the setting of the number of stitches of the first pattern from the flash memory 44 and resets it in the RAM 43 (S86), and enters a standby state (S61). The sewing program ends when the user turns off the power switch of the sewing machine 1. The sewing program ends when the user turns off the power switch of the sewing machine 1.

  As described above, in the sewing machine 1 of this embodiment, when the main part setting screen 80 is displayed on the display unit 11, the sewing machine 1 is sewn on the work cloth in the normal sewing mode. On the main part setting screen 80, if the normal pitch displayed in the pitch display area 82 is the upper limit (5.00 mm) and there is a panel operation of the [+] key 84A (S21: YES), the CPU 41 will display the pitch display area 82. The pattern name “DS-1” of the sewing pattern is displayed on and a special sewing mode is set (S22). That is, the CPU 41 can shift from the normal sewing mode to the special sewing mode while displaying the main part setting screen 80 on the display unit 11. Therefore, the user can save time and effort to return the screen display to the home screen 60 because a screen that can be shifted to the special sewing mode such as the design stitch editing screen 75 is displayed. Therefore, the sewing machine 1 can easily shift to the special sewing mode.

  If there is a long-press panel operation on the pitch display area 61 on the home screen 60 (S5: YES), the CPU 41 can shift to the main part setting screen 80 where the work cloth can be sewn (S6). If there is an operation on the setting key 10A on the home screen 60 (S3: YES), the CPU 41 can set a plurality of sewing patterns via the setting menu screen 65 and the design stitch registration screen 70 (S27, S28: YES). The design stitch edit screen 75 can be shifted to (S32). That is, the CPU 41 can make the screen that can be sewn and the screen that can set the sewing pattern different from each other.

  When the CPU 41 receives a long press panel operation on the pitch display area 82 in the main part setting screen 80 (S16: YES), the CPU 41 displays the pattern name of the sewing pattern in the pitch display area 82 and sets the special sewing mode. If it is, the design stitch edit screen 75 is displayed on the display unit 11 (S37). That is, the CPU 41 can easily switch the screen display to the design stitch editing screen 75 by receiving a simple operation of a long press panel operation on the pitch display area 82 in a state where the special sewing mode is set.

  The CPU 41 is displaying the design stitch edit screen 75, and the activated area is the stitch number display portion 77D, and the number of pattern stitches is decreased from 1 to 0 by the panel operation of the [−] key 78B. (S45: YES), the pattern after the pattern corresponding to the activated needle number display portion 77D is set to invalid (S46). That is, when there is an operation for setting the number of pattern stitches of one pattern among the plurality of patterns included in the sewing pattern to 0, the subsequent pattern settings are set to invalid. Therefore, the CPU 41 can easily change the contents of the sewing pattern in the special sewing mode.

  When the pattern pitch of the pattern included in the sewing pattern is set to a negative value, the CPU 41 can perform sewing while transferring the work cloth in the reverse direction when sewing the pattern. Therefore, the sewing machine 1 can be sewn in various patterns in the special sewing mode.

  The sewing pattern includes a plurality of patterns having different numbers of pattern needles. In the special sewing mode, if the sewing shape displayed in the sewing shape display area 83 of the main part setting screen 80 is fixed-size sewing and the number of fixed-size stitches is set, what is the number of pattern stitches of each pattern in the sewing pattern? Even in the setting, the sewing machine 1 finishes the pattern sewing with the fixed stitch number. Therefore, since the pattern sewing can be performed with a predetermined number of stitches regardless of the number of pattern stitches, the sewing machine 1 can sew a pattern desired by the user.

  In the main part setting screen 80, the setting change from the normal sewing mode to the special sewing mode is that the panel operation of the [+] key 84A is performed with the normal pitch upper limit value (5.00 mm) in the panel operation for the pitch display area 82. It can be done with a simple operation. That is, the sewing machine 1 can set the special sewing mode using the [+] key 84A already provided on the main part setting screen 80 without providing a new key.

  In the above embodiment, the CPU 41 that executes the processes of S22 and S25 corresponds to the “mode setting means” of the present invention. The drive circuit 51 corresponds to a “display control unit”. The touch panel 12 corresponds to a “first input unit”. The pedal 22 corresponds to a “second input unit”. The CPU 41 that executes the process of S64 corresponds to “sewing means”. The home screen 60 corresponds to a “first screen”. In S5, the long press panel operation on the pitch display area 61 corresponds to "first instruction". The main part setting screen 80 corresponds to a “second screen”. In S21, the panel operation on the [+] key 84A corresponds to “second instruction”.

  The operation for the setting key 10A on the home screen 60, the panel operation for selecting the design stitch registration key 67A on the setting menu screen 65, and the panel operation for the editing key display area 78 on the design stitch registration screen 70 correspond to “third instruction”. The design stitch edit screen 75 corresponds to a “third screen”. In S16, the long press panel operation on the pitch display area 82 corresponds to the “fourth instruction”. In S42, the panel operation for the [+] key 78A and the [−] key 78B corresponds to “fifth instruction”. The CPU 41 that executes the process of S43 corresponds to “pattern setting means”. The CPU 41 that executes the process of S45 corresponds to “needle number determination means”. The CPU 41 that executes the process of S46 corresponds to “invalid means”. The CPU 41 that executes the processes of S12, S13, S15, and S26 corresponds to “normal stitch number setting means”. The CPU 41 that executes the processes of S40, S41, S42, and S43 corresponds to “special stitch number setting means”. The CPU 41 that executes the process of S76 corresponds to “setting determination means”. The CPU 41 that executes the processes of S10, S13, S15, and S26 corresponds to “changing means”.

  In addition, this invention is not limited to the said embodiment, A various change can be added. Each process accompanying execution of the above-described screen display program and sewing program is not limited to the example executed by the CPU 41. Each of the above processes may be executed by another electronic component (for example, ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), or the like).

  The sewing pattern is not limited to five types, and may be one type or a plurality of types. The number of patterns included in the sewing pattern is not limited to eight, and a plurality of patterns may be used. In the sewing pattern, the sewing machine 1 may invalidate only the pattern whose pattern number is set to 0 without invalidating the pattern after the pattern whose pattern number is set to 0.

  The first instruction of the present invention may be an instruction to switch to the main part setting screen 80 while the home screen 60 is displayed, and is not limited to a long-press panel operation on the pitch display area 61. For example, a display area for switching to the main part setting screen 80 may be provided on the home screen 60, and the first instruction may be a panel operation on the display area.

  The CPU 41 sets the special sewing mode when receiving the panel operation of the [+] key 84A at the upper limit value of the normal pitch in the panel operation for the pitch display area 82 on the main part setting screen 80. The second instruction of the present invention may be an instruction for setting the special sewing mode while the main part setting screen 80 is displayed. The main part setting screen 80 may be provided with a mode change key for setting the special sewing mode below a blank area, for example, the edit key display area 84. The CPU 41 may change the setting to the special sewing mode when the panel operation for the mode change key is received in the normal mode. The CPU 41 can set the special sewing mode by operating the panel without providing a new key on the operation unit 10. Note that the mode change key in this modification corresponds to the “accepting unit” of the present invention.

  In the normal mode, the CPU 41 may change the setting to the special sewing mode when a long press panel operation on the pitch display area 82 is received on the main part setting screen 80. The CPU 41 can set the special sewing mode based on a simple operation that accepts a long-press panel operation without providing a new key in the operation unit 10 or the main unit setting screen 80. In the present modification, the long press operation on the pitch display area 82 corresponds to the “second instruction” of the present invention.

  When the CPU 41 receives a flick operation starting from the pitch display area 82 on the main part setting screen 80 in the normal mode, the CPU 41 may change the setting to the special sewing mode. The flick operation is a series of operations for accepting input from the touch panel 12 to the target display area in the screen, accepting a change in the input position in one direction while maintaining the input state, and then releasing the input state. It is. For example, as shown in FIG. 12, when a flick operation is received in the direction of the arrow 88 starting from the pitch display area 82 while the main part setting screen 80 is displayed, the CPU 41 displays the pattern name of the sewing pattern in the pitch display area 82. “DS-1” is displayed and the special sewing mode is set. The CPU 41 can set the special sewing mode based on a simple operation that accepts a flick operation without providing a new key in the operation unit 10 or the main unit setting screen 80. In the present modification, the flick operation in the direction of the arrow 88 starting from the pitch display area 82 corresponds to the “second instruction” of the present invention.

  The third instruction of the present invention may be an instruction to display the design stitch edit screen 75 on the display unit 11 while the home screen 60 is displayed. For example, a display area for displaying the design stitch edit screen 75 may be provided on the home screen 60, and the third instruction may be a panel operation on the display area.

  The fourth instruction of the present invention may be an instruction to switch from the main part setting screen 80 to the design stitch editing screen 75 in a state where the special sewing mode is set while the main part setting screen 80 is displayed. Not limited to long-press panel operation. For example, in the state where the special sewing mode is set while the main part setting screen 80 is displayed, a display area for switching to the design stitch editing screen 75 is provided on the main part setting screen 80, and the fourth instruction is a panel operation for the display area. But you can.

  The fifth instruction of the present invention may be an instruction for setting a plurality of patterns while the design stitch edit screen 75 is displayed, and is not limited to the panel operation with respect to the [+] key 78A and the [−] key 78B. For example, the edit key display area 78 has numeric keys from 0 to 9, and may accept a panel operation for directly inputting the value of the pattern pitch or the number of pattern stitches.

1 Sewing machine 7 Needle bar 8 Sewing needle 11 Display unit 12 Touch panel 22 Pedal 41 CPU
50 Transfer mechanism 51 Drive circuit 60 Home screen 75 Design stitch edit screen 80 Main section setting screen

Claims (10)

A needle bar that has a sewing needle and can move up and down relative to the sewing object;
A transfer mechanism capable of transferring the sewing object in synchronization with the vertical movement of the needle bar;
In a sewing machine comprising:
A normal sewing mode in which the transfer mechanism sets the transfer amount to transfer the sewing object by one movement of the needle bar once, and the number of stitches is the number of times the needle bar is moved up and down; Mode setting means for setting a special sewing mode for sewing the sewing object according to a sewing pattern in which a plurality of patterns associated with the transfer amount are set and combined;
A display control unit that performs control to display information on the screen;
A first input unit that receives an input of an instruction for information displayed on the screen by the display control unit;
With
The display control unit
A first screen displaying information on sewing on the screen;
A second screen for displaying the transfer amount on the screen when the first input unit receives a first instruction during the display of the first screen;
Can be displayed and
The mode setting means sets the special sewing mode when the first input unit receives a second instruction while the display control unit is displaying the second screen while the normal sewing mode is set. Sewing machine characterized by setting. When the first input unit receives a third instruction different from the first instruction during the display of the first screen, the display control unit displays a plurality of the patterns in the special sewing mode on the screen. The sewing machine according to claim 1, wherein a third screen capable of setting each is displayed. The display control unit displays the screen when the first input unit receives a fourth instruction while the mode setting means sets the special sewing mode while the second screen is displayed. The sewing machine according to claim 2, wherein the sewing machine is switched from a second screen to the third screen. Pattern setting means for setting the plurality of patterns in the special sewing mode based on a fifth instruction received by the first input unit during the display of the third screen;
Needle number determination means for determining whether the fifth instruction received by the first input unit is an instruction to set the number of stitches of the pattern to 0;
Invalidity means for invalidating the setting after the pattern in which the number of stitches is set to 0 when the stitch number judging means determines that the instruction is to set the number of stitches to 0 in the pattern;
The sewing machine according to claim 2 or 3, further comprising: The pattern setting means can set a negative value for each of the transfer amounts of the plurality of patterns,
The said transfer mechanism transfers the said sewing target object in the reverse direction when the said transfer amount is a positive value, when the said transfer amount is a negative value. sewing machine. Normal stitch number setting means for setting the number of stitches in the normal sewing mode;
Special stitch number setting means for individually setting the number of stitches for each of the plurality of patterns of the sewing pattern in the special sewing mode;
Setting judgment means for judging whether or not the normal stitch number setting means has set the stitch number;
Sewing means for sewing the sewing object in the mode set by the mode setting means;
With
When the setting determination unit determines that the normal stitch number setting unit has set the stitch number, when the sewing unit performs sewing in the special sewing mode, the number of stitches set by the normal stitch number setting unit is reached. The sewing machine according to any one of claims 2 to 5, wherein sewing is terminated even if the number of stitches set by the special stitch number setting means is not reached. Changing means for changing the transfer amount in the normal sewing mode displayed on the second screen by the display control unit within a preset effective range based on an input of an instruction received by the first input unit. ,
The sewing machine according to claim 1, wherein the second instruction is an instruction that the changing unit changes the transfer amount to a value that exceeds the effective range. The display control unit displays a receiving unit that receives an instruction input from the first input unit in the second screen,
The sewing machine according to claim 1, wherein the second instruction is an instruction based on an operation on the reception unit.   The second instruction is an input that is continued for a predetermined time or more by the first input unit with respect to a display portion of the transfer amount displayed on the second screen in a state where the mode setting means sets the normal sewing mode. The sewing machine according to any one of claims 1 to 6, wherein the sewing machine is an instruction based on an operation of accepting the sewing machine.   In the second instruction, the mode setting means sets the normal sewing mode, and accepts an input from the first input unit to the display portion of the transfer amount displayed on the second screen. The sewing machine according to any one of claims 1 to 6, wherein the sewing machine is an instruction based on a series of operations for accepting cancellation of an input state after accepting a change of an input position in one direction while maintaining the state.