JP2017046830A - Sewing machine and control method of sewing machine - Google Patents

Abstract

An object of the present invention is to provide a sewing machine and a sewing machine control method capable of reducing a sewing time during execution of cycle sewing. A sewing machine including a display unit, a needle bar, a needle bar vertical movement mechanism, and a transfer mechanism reads target data (S30). The sewing machine displays the identifier on the display unit (S31). When the sewing machine acquires the first instruction (S33), the sewing machine starts sewing (S34). The sewing machine determines whether the sewing according to the target data has been completed (S45). When the sewing machine acquires the second instruction (S35, S43), the sewing image is displayed on the display unit (S36, S44). [Selection diagram] FIG.

Description

  The present invention relates to a sewing machine and a method for controlling the sewing machine.

  There is a sewing machine that can execute cycle sewing according to a program. Cycle sewing is a sewing method in which a sewing sequence for registering a plurality of sewing data in a single program and successively forming a stitch pattern based on each sewing data is executed continuously. The sewing machine disclosed in Patent Document 1 displays a stitch image representing a stitch pattern to be sewn currently being sewn and a program number on a display unit when cycle sewing is performed.

JP 2003-53074 A

  The sewing machine disclosed in Patent Document 1 receives an instruction to start sewing after displaying sewing data to be sewn on the display unit. In the sewing data, a needle drop point of a predetermined stitch pattern is determined for each stitch, and the data amount of the sewing data is very large. Therefore, it takes time to display the stitch image on the display unit based on the sewing data to be sewn. There is a problem in that sewing cannot be started for the time of the display process, waiting time is generated, and sewing work is delayed.

  An object of the present invention is to provide a sewing machine and a sewing machine control method capable of shortening a sewing time at the time of performing cycle sewing.

  The sewing machine according to the first aspect of the present invention includes a display unit, a needle bar to which a sewing needle can be attached, a needle bar vertical movement mechanism capable of moving the needle bar up and down, and a vertical movement of the needle bar by the needle bar vertical movement mechanism. In a sewing machine having a transfer mechanism capable of transferring a cloth in synchronization with movement, a storage means for storing a plurality of sewing data for forming stitches, and a cycle program including a correspondence between the plurality of sewing data and the sewing order First sewing means for specifying the target data that is the next sewing data in the sewing order, and reading the target data from the storage means; and an identifier representing the target data read by the first reading means A first control means for displaying on the display unit, and a first instruction for starting sewing in accordance with the target data read by the first reading means after the first control means displays the identifier on the display unit First to When the obtaining means and the first obtaining means obtain the first instruction, the transfer mechanism and the needle bar vertical movement mechanism are driven to start sewing according to the target data read by the first reading means. First driving means for determining, determining means for determining whether or not sewing according to the target data has been completed after the first driving means has started sewing, and determining that the determination means has ended sewing according to the target data Before the second acquisition means for acquiring a second instruction to display a stitch image representing the stitch of the target data on the display unit, and when the second acquisition means has acquired the second instruction, Second control means for displaying the stitch image on the display unit.

  The sewing machine of the first aspect acquires the first instruction after displaying the identifier on the display unit. When the sewing machine displays a stitch image on the display unit, a process of generating image data for displaying the stitch image from the sewing data is performed. Since the stitch image is based on the sewing data, the display of the stitch image takes a longer time to display than the display of the identifier. When the sewing machine acquires the second instruction, it can display the stitch image on the display unit. The operator can confirm the stitch image by inputting the second instruction. The sewing machine can shorten the sewing time when performing cycle sewing as compared with the conventional sewing machine without impairing the convenience of the operator.

  The sewing machine according to the first aspect includes timing means for timing the time after the first control means displays the identifier on the display unit, and the second acquisition means has a predetermined time measured by the timing means. The second instruction may be acquired when time elapses and the first acquisition means does not acquire the first instruction.

  In this case, the sewing machine can automatically display the stitch image on the display unit when the sewing image is not affected even if the stitch image is displayed on the display unit. The operator can confirm the stitch image displayed on the display unit without inputting a display instruction. The sewing machine can shorten the sewing time when performing cycle sewing as compared with the conventional sewing machine without impairing the convenience of the operator.

  The sewing machine according to the first aspect obtains a third instruction for performing an operation test for driving the transfer mechanism without moving the needle bar up and down by the needle bar vertical movement mechanism according to the sewing data of the cycle program. Three acquisition means, and when the third acquisition means acquires the third instruction, a second reading means for reading the target data of the cycle program, and the sewing representing the target data read by the second reading means. Third control means for displaying an eye image on the display section, and after the third control means displays the stitch image on the display section, the operation test is performed according to the target data read by the second reading means. A fourth acquisition means for acquiring a fourth instruction to be started; and the target data read by the second reading means by driving the transfer mechanism when the fourth acquisition means acquires the fourth instruction. Thus it may further comprise a second driving means for performing the operation test.

  In this case, the sewing machine automatically displays the stitch image of the target data on the display unit during the operation test. For example, the operator performs an operation test when confirming the position below the needle bar (needle drop point). The operator can grasp the stitch image by comparing the movement of the transfer mechanism. The operator can check the stitch image without inputting a display instruction during the operation test.

  The sewing machine of the first aspect includes interruption means for acquiring an instruction to interrupt sewing before the determination means determines that the sewing according to the target data is completed after the first driving means starts sewing, The second acquisition means may acquire the second instruction when the interruption means acquires an instruction to suspend sewing.

  In the sewing machine in this case, when sewing is interrupted, the operator can easily and quickly confirm the progress status of the cycle program with the formed stitches and the stitch image displayed on the display unit. By confirming the stitch image, the operator can accurately input an instruction to resume sewing.

  The sewing machine control method according to the second aspect of the present invention includes a display unit, a needle bar to which a sewing needle can be attached, a needle bar vertical movement mechanism capable of moving the needle bar up and down, and the needle bar vertical movement mechanism. A sewing machine control method comprising a transfer mechanism capable of transferring a cloth in synchronization with the vertical movement of a needle bar, and a storage means for storing a plurality of sewing data for forming stitches, the plurality of sewing data and The target data whose sewing order is the next sewing data is specified from the cycle program including the correspondence of the sewing order, the reading process of reading the target data from the storage means, and the target data read in the reading process A first control step for displaying an identifier on the display unit; and a first instruction for starting sewing according to the target data read in the reading step after the identifier is displayed on the display unit in the first control step. When the first instruction is acquired in the first acquisition step and the first acquisition step, the transfer mechanism and the needle bar vertical movement mechanism are driven, and sewing is started according to the target data read out in the reading step Before starting sewing in the driving step, determining whether or not the sewing according to the target data has ended, and before determining that the sewing according to the target data has ended in the determining step, A second acquisition step of acquiring a second instruction to display the stitch image representing the stitch of the target data on the display unit, and the stitch image when the second instruction is acquired in the second acquisition step; The 2nd control process of displaying on a said display part.

  The sewing machine control method of the second aspect exhibits the same effects as the sewing machine of the first aspect when executed by the sewing machine.

The perspective view of the sewing machine 1. FIG. FIG. The top view of the transfer mechanism 80. FIG. FIG. 2 is a block diagram showing an electrical configuration of the sewing machine 1. Sewing data and stitches conceptual diagram. The conceptual diagram of a cycle program. The flowchart of a cycle mode process. The flowchart of a sewing process. Explanatory drawing of the screen 40 which the display part 95 displays. Explanatory drawing of the screen 48 which the display part 95 displays.

  Embodiments of the present invention will be described with reference to the drawings. In the following description, the top, bottom, left and right, front and back indicated by arrows in the figure are used.

  The overall structure of the sewing machine 1 will be described with reference to FIG. The sewing machine 1 is a tacking sewing machine that forms tacking stitches on a cloth, and includes a sewing machine body 10, a table 9, a control device 50, a display unit 95, an operation panel 98, a foot pedal 23, and a power switch 77. The sewing machine body 10, the display unit 95, and the operation panel 98 are disposed on the table 9. The control device 50, the foot pedal 23 and the power switch 77 are arranged below the table 9. The display unit 95 is a liquid crystal display. The operation panel 98 is a touch panel provided on the front surface of the display unit 95. The foot pedal 23 is a pedal that an operator operates with his / her foot, and is an operation unit capable of inputting various instructions to the control device 50. The foot pedal 23 includes a first switch 24 and a second switch 25 (see FIG. 4, hereinafter referred to as a first SW 24 and a second SW 25) inside, and has a two-step depression position corresponding to the depression amount. In the state where the foot pedal 23 is not depressed, both the first SW 24 and the second SW 25 are off. When the first step is depressed, the first SW 24 is turned on, and when the second step is depressed, the second SW 25 is turned on. Therefore, the control device 50 detects the depression position of the foot pedal 23 based on on / off of the first SW 24 and the second SW 25.

  As shown in FIGS. 1 to 3, the sewing machine body 10 includes a bed portion 2, a pedestal portion 3, an arm portion 4, a cloth presser device 11, and a thread trimming mechanism (not shown). The bed part 2 is arranged on the table 9. The bed portion 2 extends in the front-rear direction and includes a vertical shuttle 8, a feed base 37, a swing mechanism 63, an X feed motor 92, and the like. The bed portion 2 includes a needle plate 29 having a needle hole 30 on the upper surface of the front end portion.

  The pedestal 3 extends upward from the rear side of the bed 2 and includes a sewing machine motor 91 (see FIG. 4), a Y feed motor 93, and a cloth presser motor 94 (see FIG. 4). The arm portion 4 extends forward substantially parallel to the bed portion 2 from the upper end of the pedestal column portion 3, and includes a sewing machine main shaft 33 and a needle bar vertical movement mechanism 34 that are driven by a sewing machine motor 91 therein. The front end portion 5 of the arm portion 4 projects downward from other portions of the arm portion 4. The front end portion 5 supports the needle bar 6 so as to be movable up and down. The needle bar 6 extends downward from the lower end of the front end portion 5. The needle bar 6 has a sewing needle 7 detachable at its lower end. The needle bar up-and-down movement mechanism 34 can move the needle bar 6 up and down by driving the sewing machine main shaft 33. The presser foot device 11 is provided on the upper portion of the bed portion 2 and presses the cloth as a sewing object from above with the presser foot 12. The presser foot device 11 is driven by a presser foot motor 94 to move the presser foot 12 up and down. The cloth presser motor 94 is a pulse motor. The thread cutting mechanism is provided inside the bed portion 2 and cuts the upper thread and the lower thread after the end of sewing. The thread cutting mechanism includes a fixed blade provided below the needle plate 29 and a movable blade movable relative to the fixed blade, and moves the movable blade via a link mechanism (not shown) to cut the thread. .

  The transfer mechanism 80 will be described with reference to FIG. The transfer mechanism 80 can transfer the cloth in synchronization with the vertical movement of the needle bar 6 by the needle bar vertical movement mechanism 34. The transport mechanism 80 can transport the feed base 37 and the feed plate 38 in the longitudinal direction and the lateral direction. The cloth is disposed on the upper surface of the feed plate 38. The transfer mechanism 80 includes a feed base 37, an X feed motor 92, a swing mechanism 63, and a Y feed motor 93. The feed base 37 fixes a feed plate 38 on the upper surface. The feed base 37 is connected to the front end portion of the rack shaft 60 extending in the front-rear direction. The feed base 37 is connected to the swing mechanism 63 below the rear end. The X feed motor 92 is a pulse motor and drives the swing mechanism 63. As the swing mechanism 63 is driven, the feed base 37 can swing in the left-right direction around a shaft portion 61 connected to the front end portion of the rack shaft 60. The output shaft 64 of the Y feed motor 93 fixes the gear 65. The gear 65 meshes with the rack 62 of the rack shaft 60. The Y-feed motor 93 is a pulse motor and moves the rack shaft 60 in the front-rear direction. The feed base 37 and the feed plate 38 move in the front-rear direction as the rack shaft 60 moves. The feed plate 38 has a through hole 39 penetrating in the vertical direction at the front end. The sewing needle 7 passes through the through hole 39 during sewing and reaches the needle hole 30 of the needle plate 29. The presser foot 12 presses the cloth on the feed plate 38. The cloth moves with the feed plate 38.

  The electrical configuration of the sewing machine 1 will be described with reference to FIG. The control device 50 of the sewing machine 1 includes a microcomputer including a CPU 51, a ROM 52, a RAM 53, and a nonvolatile memory 54, an input interface 56 and an output interface 57 connected to the microcomputer via a data bus and the like, drive circuits 71 to 75, and the like. Have. The CPU 51 controls the overall operation of the sewing machine 1. The ROM 52 stores in advance a cycle mode program for executing a cycle mode process (see FIG. 7), which will be described later, sewing data for forming various tacking stitches, and the like. The sewing data includes coordinate data in which needle drop points are determined in order. The needle drop point is a predetermined position on the cloth where the sewing needle 7 is stuck when the sewing needle 7 moves downward together with the needle bar 6. The RAM 53 temporarily stores various information generated during the execution of various processes. The RAM 53 stores timer measurement values. The nonvolatile memory 54 stores a cycle program (see FIG. 6) described later.

  The drive circuits 71 to 75 are connected to the output interface 57, respectively. The drive circuit 71 is connected to the sewing machine motor 91 and drives the sewing machine motor 91 based on a control command from the CPU 51. The drive circuit 72 is connected to the X-feed motor 92 and drives the X-feed motor 92 based on a control command from the CPU 51. The drive circuit 73 is connected to the Y-feed motor 93 and drives the Y-feed motor 93 based on a control command from the CPU 51. The drive circuit 74 is connected to the presser foot motor 94 and drives the presser foot motor 94 based on the control command of the CPU 51. The drive circuit 75 is connected to the display unit 95 and drives the display unit 95 based on a control command from the CPU 51.

  The power switch 77, the first SW 24 and the second SW 25 of the foot pedal 23, the encoders 91A to 94A, the operation panel 98, and the like are connected to the input interface 56, respectively. The power switch 77 activates and terminates the sewing machine 1. The encoder 91 </ b> A is connected to the sewing machine motor 91 and inputs information on the rotational position and rotational speed of the sewing machine motor 91 to the input interface 56. The encoder 92 </ b> A is connected to the X-feed motor 92 and inputs pulse information to be output corresponding to the rotation direction, rotation position, and rotation speed of the X-feed motor 92 to the input interface 56. The encoder 93 </ b> A is connected to the Y-feed motor 93 and inputs pulse information to be output corresponding to the rotation direction, rotation position, and rotation speed of the Y-feed motor 93 to the input interface 56. The encoder 94 </ b> A is connected to the presser foot motor 94, and inputs to the input interface 56 pulse information that is output in accordance with the rotation direction, rotational position, and rotational speed of the presser foot motor 94. The operation panel 98 detects a pressing operation of the operator's finger or the like, and recognizes a selection item in the image based on the detected pressing position. The operation panel 98 can input various settings such as sewing start, sewing stop, and cycle program number.

  The sewing data will be described with reference to FIG. The sewing data is data for driving the sewing machine 1 to sew a stitch pattern on the cloth. Sewing data includes an identifier and a plurality of data strings. The identifier in this example is a unique character string that identifies a plurality of sewing data. The data string represents the relative coordinate value of the needle entry point of the stitch pattern as (X, Y). X shows the relative coordinate of the left-right direction. Y shows the relative coordinate of the front-back direction. The origin of the XY coordinate system is the needle entry point at the start of sewing. For the sewing data, a plurality of data strings are arranged in order from the needle entry point at the start of sewing. The identifier of the sewing data in FIG. 5 is “U009”, and each data string of the sewing data indicates each needle drop point of the zigzag stitch pattern extending in the left-right direction. The CPU 51 sequentially reads the data string of the sewing data from the top in FIG. 5 and drives the X-feed motor 92 and the Y-feed motor 93.

  The cycle program will be described with reference to FIG. The cycle program is a program for executing cycle sewing. The cycle sewing is a sewing method in which a plurality of sewing data is sewn in a predetermined order to form a stitch pattern on a cloth. The cycle program includes correspondence between a plurality of sewing data and the sewing order. The cycle program includes a program number and a plurality of data strings. The program number is a character string including a unique number that identifies a plurality of cycle programs. The data string of this example represents the identifiers of the sewing data included in the cycle program in the sewing order. The program number of the cycle program in FIG. 6 is “C001”. The cycle program registers six pieces of sewing data in the order of U009, U001, U002, U006, U011, and U010.

  The cycle mode process will be described with reference to FIGS. The operator selects the cycle mode on the operation panel 98 when performing a sewing or operation test using the cycle program. When the operator operates the power switch 77 to start the sewing machine 1 and operates the operation panel 98 to input an instruction to execute the cycle mode, the CPU 51 reads the cycle mode program from the ROM 52 and executes this processing.

  The CPU 51 displays a selection screen on the display unit 95 (S1). The selection screen includes a sewing instruction input key for sewing according to the cycle program and a test instruction (third instruction) input key for executing an operation test according to the cycle program. The operator designates a program number on the operation panel 98 and selects a desired input key. The CPU 51 determines whether a sewing instruction has been acquired (S2). When the CPU 51 acquires the sewing instruction (S2: YES), the CPU 51 acquires the program number designated by the operator (S3). The CPU 51 executes a sewing process according to the cycle program (hereinafter referred to as a target program) having the program number acquired in S3 (S4).

  As shown in FIG. 8, the CPU 51 specifies sewing data (hereinafter referred to as target data) having the next sewing order from the cycle program having the program number acquired in S3, and reads the target data from the ROM 52 (S30). The CPU 51 reads the Kth sewing data as the sewing data having the next sewing order. The initial value of K is 1. When the program number of the target program is C001 in FIG. 6 and K is 1, the CPU 51 reads the sewing data with the identifier U009 from the ROM 52.

  The CPU 51 displays an identifier representing the target data read in S30 on the display unit 95 (S31). The display unit 95 displays the screen 40 of FIG. 9 according to the control instruction of the CPU 51. The screen 40 includes columns 41 to 44 and input keys 45 and 46. A column 41 shows a program number. A column 42 indicates the identifier of the target data. The operator selects the field 42 when inputting a display instruction for displaying a stitch image. A column 43 indicates the sewing order of the target data and the total number of sewing data registered by the target program. The upper part of the column 44 indicates the current number of stitches, and the lower part indicates the total number of stitches. The input key 45 inputs an instruction to increase or decrease the current number of stitches one by one. The input key 45 is displayed when there is a midway stop instruction (second instruction), which will be described later, and an instruction can be input. The input key 46 inputs instructions for canceling the temporary stop and canceling the error stop. CPU51 starts the timer which time-measures time after performing the process of S31 (S32). The timer updates the elapsed time every predetermined time (for example, 100 ms).

  The operator places a cloth on the feed plate 38, presses the cloth with the presser foot 12, and then depresses the foot pedal 23 to turn on the second SW 25. The second SW 25 inputs an instruction to start sewing to the control device 50. CPU51 receives the instruction | indication of a sewing start after S31. The CPU 51 determines whether an instruction to start sewing has been acquired (S33). If the CPU 51 has not acquired an instruction to start sewing (S33: NO), the CPU 51 determines whether or not a display instruction (second instruction) for displaying a stitch image has been acquired (S35). The CPU 51 accepts the second instruction before determining that the sewing according to the target data is finished in S45 described later. There are two cases where the CPU 51 acquires a display instruction. The first is when the operator inputs a display instruction by selecting the column 42 displayed on the display unit 95 in S31. The second is the time when a predetermined time has elapsed without acquiring an instruction to start sewing in S33 after the identifier is started to be displayed on the display unit 95 in S31. The CPU 51 refers to the timer activated in S32 and determines whether or not a predetermined time has elapsed after starting to display the identifier on the display unit 95 in S31. The stitch image is an image representing a stitch pattern of the sewing data.

  CPU51 returns a process to S33, when the display instruction | indication has not been acquired (S35: NO). CPU51 displays the stitch image showing the stitch of object data on the display part 95, when a display instruction | indication is acquired (S35: YES) (S36). The CPU 51 generates image data for displaying the stitch image on the display unit 95 based on the target data. The CPU 51 generates image data according to a known method. CPU51 specifies the relative coordinate of the needle drop point which the data sequence of object data represents. The CPU 51 generates image data representing a line segment that connects each needle drop point in the sewing order. The CPU 51 displays a stitch image on the display unit 95 based on the image data (S36). The display unit 95 displays the screen 48 of FIG. 10 based on the image data. The screen 48 includes columns 41, 44, 47 and input keys 45, 46. A column 47 shows a stitch image of the target data. The operator can select the column 47 when inputting a display instruction for displaying the identifier. CPU51 sets 0 to a timer and stops a timer (S47). The CPU 51 returns the process to S33.

  When the CPU 51 obtains an instruction to start sewing (S33: YES), it drives the transfer mechanism 80 and the needle bar vertical movement mechanism 34 to start sewing according to the target data read in S30 (S34). When the CPU 51 acquires an instruction to start sewing, the display unit 95 displays the screen 40 of FIG. The CPU 51 updates the column 44 and the like as needed according to the progress of sewing. The CPU 51 determines whether an instruction to stop halfway (second instruction) has been acquired (S37). The CPU 51 acquires a midway stop instruction when a malfunction such as thread breakage occurs in the sewing machine 1 and an operator inputs an instruction to stop the operation of the sewing machine 1. After starting the sewing, the CPU 51 accepts an instruction to stop halfway before determining that the sewing according to the target data is finished in S45 described later. CPU51 displays the stitch image showing object data on the display part 95 similarly to S36, when the instruction | indication of a stop on the way is acquired (S37: YES) (S38). The display unit 95 displays a stitch image similar to the screen 48 of FIG. 10 according to the control signal of the CPU 51. In S38, the CPU 51 may indicate the current needle drop position in a display mode (for example, color, brightness, and presence / absence of blinking) different from other needle drop positions.

  The CPU 51 determines whether or not an instruction to return one stitch has been acquired (S39). The operator can input an instruction to return one stitch with the input key 45. When the CPU 51 obtains an instruction to return one stitch (S39: YES), the CPU 51 executes a one-hand returning process (S41). The CPU 51 sets the current data string of the sewing data as the data string in the previous sewing order. The CPU 51 drives and controls the X-feed motor 92 and the Y-feed motor 93 in accordance with the data sequence in which the sewing order is one before. The transfer mechanism 80 transfers the feed base 37 and the feed plate 38 as the X feed motor 92 and the Y feed motor 93 are driven. The CPU 51 reduces the current number of stitches in the column 44 displayed by the display unit 95 by one. If the CPU 51 has not acquired an instruction for returning one stitch (S39: NO), the CPU 51 determines whether an instruction for re-sewing has been acquired (S40). The operator can input a re-sewing instruction with the input key 46. CPU51 returns a process to S39, when the instruction | indication of a re-sewing is not acquired (S40: NO) or after S41. When the CPU 51 obtains an instruction for re-sewing (S40: YES), the CPU 51 resumes sewing according to the data string after the current number of stitches in the target data (S42). At this time, the display unit 95 displays the screen 40 of FIG.

  If the CPU 51 has not acquired an instruction to stop halfway (S37: NO), or after S42, the CPU 51 determines whether a display instruction has been acquired (S43). In S43, the CPU 51 acquires a display instruction when the operator selects the column 42 displayed on the display unit 95 on the operation panel 98. CPU51 displays a stitch image on the display part 95 similarly to S36, when a display instruction | indication is acquired (S43: YES) (S44). The display unit 95 displays a stitch image similar to the screen 48 of FIG. 10 according to the control signal of the CPU 51. If the display instruction has not been acquired (S43: NO), the CPU 51 determines whether or not the sewing based on the target data has been completed (S45). If the sewing has not ended (S45: NO), or after S44, the CPU 51 returns the process to S37.

  When the sewing is completed (S45: YES), the CPU 51 refers to the target program and determines whether the target data is the last sewing data in the sewing order (S46). When the target data is not the last sewing data (S46: NO), the CPU 51 adds 1 to K and then returns the process to S30. When the target data is the last sewing data (S46: YES), the CPU 51 ends the sewing process and returns the process to FIG.

  After S4, the CPU 51 determines whether or not an instruction to end the cycle mode process has been acquired (S17). The operator can input an end instruction by operating the power switch 77 to end the sewing machine 1. CPU51 returns a process to S2, when the instruction | indication of completion | finish is not acquired (S17: NO). CPU51 complete | finishes a cycle mode process, when the completion | finish instruction | indication is acquired (S17: YES).

  If the CPU 51 has not acquired a sewing instruction (S2: NO), the CPU 51 determines whether or not a test instruction has been acquired (S5). If the CPU 51 has not acquired a test instruction (S5: NO), the process returns to S2. When the CPU 51 obtains the test instruction (S5: YES), it obtains the program number in the same manner as S3 (S6). The CPU 51 refers to the cycle program of the program number acquired in S6 (hereinafter referred to as target program), and reads out the sewing data (hereinafter referred to as target data) in the next sewing order from the ROM 52 (S7). The initial value of K is 1. The CPU 51 displays a stitch image representing the target data read in S7 on the display unit 95 (S8). The CPU 51 receives an instruction to start sewing after displaying the stitch image. The CPU 51 determines whether or not a start instruction (fourth instruction) for starting an operation test based on the target data has been acquired (S9). The operator can input a start instruction with the foot pedal 23. If the CPU 51 has not acquired a start instruction (S9: NO), the CPU 51 waits until a start instruction is acquired.

  When the CPU 51 acquires a start instruction (S9: YES), the CPU 51 drives the transfer mechanism 80 and starts an operation test according to the target data (S10). The CPU 51 drives and controls the X-feed motor 92 and the Y-feed motor 93 based on the target data. The transfer mechanism 80 transfers the feed base 37 and the feed plate 38 as the X feed motor 92 and the Y feed motor 93 are driven. Unlike the sewing process, the CPU 51 does not drive the sewing motor 91 in synchronization with the drive control of the X feed motor 92 and the Y feed motor 93. The CPU 51 maintains the sewing needle 7 at the needle up position. The needle upper position is a position where the lower end of the sewing needle 7 is above the needle plate 29. The CPU 51 updates the column 44 and the like of the screen 48 as needed according to the progress status of the operation test. The operator checks the needle entry position.

  The CPU 51 determines whether or not an instruction to interrupt the operation test has been acquired (S11). An operator can input an instruction to interrupt the operation panel 98. When the CPU 51 obtains an interruption instruction (S11: YES), it stops the X-feed motor 92 and the Y-feed motor 93 (S12). The CPU 51 determines whether or not a restart instruction has been acquired (S13). The operator can input an instruction to resume on the operation panel 98. If the CPU 51 has not acquired a restart instruction (S13: NO), the CPU 51 waits until a restart instruction is acquired. When the CPU 51 obtains a restart instruction (S13: YES), it drives the transfer mechanism 80 and restarts the operation test according to the target data (S14).

  The CPU 51 determines whether or not the operation test based on the target data is finished (S15). When the operation test has not ended (S15: NO), the CPU 51 returns the process to S11. When the operation test is completed (S15: YES), the CPU 51 refers to the target program and determines whether the target data is the last sewing data in the sewing order (S16). When the target data is not the last sewing data in the sewing order (S16: NO), the CPU 51 adds 1 to K and returns the process to S7. When the target data is the last sewing data in the sewing order (S16: YES), the CPU 51 determines whether or not an instruction to end the cycle mode process has been acquired (S17), and has not acquired an instruction to end. In the case (S17: NO), the process is returned to S2. CPU51 complete | finishes a cycle mode process, when the instruction | indication of completion | finish is acquired (S17: YES).

  The display unit 95, needle bar 6, needle bar vertical movement mechanism 34, transfer mechanism 80, and ROM 52 of the sewing machine 1 correspond to the display unit, needle bar, needle bar vertical movement mechanism, transfer mechanism, and storage means of the present invention. The process of S30 corresponds to the reading process of the present invention. The CPU 51 that executes the process of S30 functions as the first reading means of the present invention. The process of S31 corresponds to the first control process of the present invention. The CPU 51 that executes the process of S31 functions as a first control unit of the present invention. The process of S33 corresponds to the first acquisition process of the present invention. The CPU 51 that executes the process of S33 functions as a first acquisition unit of the present invention. The process of S34 corresponds to the driving process of the present invention. The CPU 51 that executes the process of S34 functions as the first drive means of the present invention. The process of S45 corresponds to the determination process of the present invention. The CPU 51 that executes the process of S45 functions as a determination unit of the present invention. The processes of S35 and S43 correspond to the second acquisition process of the present invention. The CPU 51 that executes the processes of S35 and S43 functions as a second acquisition unit of the present invention. The processes of S36 and S44 correspond to the second control process of the present invention. The CPU 51 that executes the processes of S36 and S44 functions as the second control means of the present invention. The CPU 51 that executes the process of S32 functions as the time measuring means of the present invention. The CPU 51 that executes the process of S5 functions as a third acquisition unit of the present invention. The CPU 51 that executes the process of S7 functions as the second reading means of the present invention. The CPU 51 that executes the process of S8 functions as third control means of the present invention. The CPU 51 that executes the process of S9 functions as a fourth acquisition unit of the present invention. The CPU 51 that executes the process of S10 functions as the second driving means of the present invention. The CPU 51 that executes the process of S37 functions as the interruption means of the present invention.

  When the CPU 51 displays the stitch image on the display unit 95, a process of generating image data for displaying the stitch image from the sewing data is performed. Since the stitch image is based on the sewing data, the display of the stitch image takes a longer time to display than the display of the identifier. The sewing machine 1 displays an identifier and does not display a stitch image. The operator can input a sewing start instruction (first instruction) by operating the foot pedal 23. When the sewing machine 1 acquires the display instruction (second instruction) (S35 or S43), it can display the stitch image on the display unit 95. The operator can confirm the stitch image by inputting a display instruction. The sewing machine 1 can shorten the sewing time when performing cycle sewing as compared with the conventional sewing machine without impairing the convenience of the operator.

  The sewing machine 1 displays a stitch image on the display unit 95 when the time counted by the timer started in S32 has elapsed and a display instruction is not acquired (S33: NO, S35: YES). If the sewing machine 1 does not affect the sewing operation even if the stitch image is displayed on the display unit 95, the stitch image can be automatically displayed on the display unit 95. The operator can confirm the stitch image displayed on the display unit 95 without inputting a display instruction. The sewing machine 1 can shorten the sewing time when performing cycle sewing as compared with the conventional sewing machine without impairing the convenience of the operator.

  The sewing machine 1 displays the stitch image of the target data on the display unit 95 during the operation test. The operator can check the stitch image without inputting a display instruction during the operation test. When sewing is interrupted, the operator can easily and quickly confirm the progress status of the cycle program with the formed stitches and the stitch image displayed on the display unit 95. By confirming the stitch image, the operator can accurately input an instruction to resume sewing.

  The sewing machine of the present invention can be variously modified in addition to the above embodiment. The sewing machine 1 only needs to be able to execute a cycle program, and may be another sewing machine such as a boring machine. The display unit only needs to be able to display the identifier and the stitch image. You may change suitably the arrangement | positioning of a display part. The layout of the stitch image may be changed as appropriate. The storage means may be another storage medium such as a hard disk device. The transfer mechanism may be a feed dog that can transfer the cloth in a first direction and a second direction that intersects the first direction.

  A program including a command for executing the cycle mode process of FIG. 7 may be stored in a storage device included in the sewing machine 1 before the sewing machine 1 executes the program. Each of the program acquisition method, the acquisition route, and the device storing the program may be changed as appropriate. The sewing machine 1 may receive a program executed by the processor from another device via a cable or wireless communication and store the program in a storage device such as a flash memory. Other devices include, for example, a PC and a server connected via a network.

  Each step of the cycle mode process of FIG. 7 is not limited to the example executed by the CPU 51, and another electronic device (for example, ASIC) may execute a part or all of the process. Each step of the above process may be distributed by a plurality of electronic devices (for example, a plurality of CPUs). Each step of the sewing process of the above embodiment can be changed in order, omitted, or added as necessary. The scope of the present invention is based on an instruction from the processor of the sewing machine 1, and an operating system (OS) or the like operating on the sewing machine 1 performs part or all of the actual processing, and the functions of the above-described embodiments are performed by the processing. A mode to be realized is also included.

  The operation panel 98 does not have to be a touch panel, but may have keys for inputting various instructions such as sewing start, sewing stop, cycle program number, and a display instruction for displaying a stitch image. At this time, the screens 40 and 48 may not include the input keys 45 and 46.

  The sewing machine 1 may not accept a test instruction. In this case, the sewing machine 1 can omit steps S5 to S16. When the sewing machine 1 obtains the test instruction (S5: YES), only the identifier may be displayed on the display unit 95. When the sewing machine 1 obtains a display instruction during an operation test, a stitch image may be displayed on the display unit 95.

  The sewing machine 1 does not have to display a stitch image when it receives an instruction to stop halfway (S37: YES). When the sewing machine 1 obtains an instruction to stop midway, the sewing data identifier may be displayed on the display unit 95 in addition to the stitch image. When the sewing machine 1 detects a malfunction and automatically stops, the sewing machine 1 may obtain an instruction to stop halfway. The sewing machine 1 may display a stitch image when an instruction to stop and a display instruction are received.

  When the CPU 51 acquires the display instruction in S35 of FIG. 8, when the operator inputs the display instruction by selecting the column 42 displayed on the display unit 95 in S31, and the identifier is displayed on the display unit 95 in S31. After starting to do, it may be either of two when a predetermined time has passed without acquiring the instruction to start sewing in S33. When the CPU 51 acquires the display instruction, the CPU 51 may display the sewing data identifier on the display unit 95 in addition to the stitch image. When the CPU 51 obtains the display instruction in S35, the stitch image may be displayed even after the sewing is started. At this time, the CPU 51 can omit the process of S38 when an instruction to stop halfway is acquired.

1 sewing machine 10 sewing machine body 50 control device 51 CPU
52 ROM
54 Nonvolatile memory 95 Display unit 98 Operation panel

Claims (5)

A display unit;
A needle bar to which a sewing needle can be attached; a needle bar vertical movement mechanism capable of moving the needle bar up and down;
A transfer mechanism capable of transferring the cloth in synchronization with the vertical movement of the needle bar by the needle bar vertical movement mechanism;
In a sewing machine comprising:
Storage means for storing a plurality of sewing data for forming stitches;
A first reading means for identifying target data whose sewing order is the next sewing data from a cycle program including a correspondence between a plurality of sewing data and a sewing order, and reading the target data from the storage means;
First control means for displaying an identifier representing the target data read by the first reading means on the display unit;
First acquisition means for acquiring a first instruction to start sewing in accordance with the target data read by the first reading means after the first control means displays the identifier on the display unit;
When the first acquisition means acquires the first instruction, the first drive that drives the transfer mechanism and the needle bar vertical movement mechanism and starts sewing according to the target data read by the first reading means Means,
A judgment means for judging whether or not the sewing according to the object data is finished after the first driving means starts sewing;
A second acquisition means for acquiring a second instruction for displaying a stitch image representing the stitch of the target data on the display unit before the determination means determines that the sewing according to the target data has been completed;
A sewing machine comprising: second control means for displaying the stitch image on the display unit when the second obtaining means obtains the second instruction. The first control means comprises time measuring means for measuring the time since the identifier is displayed on the display unit;
The second acquisition means acquires the second instruction when a predetermined time elapses and the first acquisition means does not acquire the first instruction. The sewing machine according to 1, wherein Third acquisition means for acquiring a third instruction for performing an operation test for driving the transfer mechanism without moving the needle bar up and down by the needle bar vertical movement mechanism according to the sewing data of the cycle program;
Second reading means for reading out the target data of the cycle program when the third acquisition means acquires the third instruction;
Third control means for displaying the stitch image representing the target data read by the second reading means on the display unit;
Fourth acquisition means for acquiring a fourth instruction for starting the operation test in accordance with the target data read by the second reading means after the third control means displays the stitch image on the display unit;
When the fourth acquisition means acquires the fourth instruction, the apparatus further comprises second drive means for driving the transfer mechanism and performing the operation test according to the target data read by the second read means. The sewing machine according to claim 1 or 2, characterized in that After the first driving means starts sewing, before the judgment means judges that the sewing according to the target data is finished, it comprises interruption means for obtaining an instruction to suspend sewing,
The sewing machine according to any one of claims 1 to 3, wherein the second acquisition means acquires the second instruction when the interruption means acquires an instruction to interrupt sewing. The display unit, a needle bar to which a sewing needle can be attached, a needle bar vertical movement mechanism that can move the needle bar up and down, and a cloth can be transferred in synchronization with the vertical movement of the needle bar by the needle bar vertical movement mechanism A sewing machine control method comprising a transfer mechanism and storage means for storing a plurality of sewing data for forming stitches,
A step of reading out the target data from the storage unit by specifying target data that is the next sewing data in the sewing order from a cycle program including a plurality of the sewing data and the correspondence of the sewing order;
A first control step of displaying an identifier representing the target data read in the reading step on the display unit;
A first acquisition step of acquiring a first instruction to start sewing according to the target data read out in the reading step after displaying the identifier on the display unit in the first control step;
When the first instruction is acquired in the first acquisition step, the driving step of driving the transfer mechanism and the needle bar vertical movement mechanism and starting sewing according to the target data read in the reading step;
A determination step of determining whether or not sewing according to the target data has been completed after starting sewing in the driving step;
A second acquisition step of acquiring a second instruction to display a stitch image representing the stitch of the target data on the display unit before determining that the sewing according to the target data has been completed in the determination step;
A sewing machine control method comprising: a second control step of displaying the stitch image on the display unit when the second instruction is acquired in the second acquisition step.