JPH042388A - Sewing start-point recovering device for automatic embroidering machine - Google Patents

Abstract

PURPOSE:To prevent deviation of a pattern due to interruption of an operation by setting an initial coordinates value to first memory means, sequentially updating and storing needle position coordinates due to movement of an embroidering frame, storing the coordinates value of a sewing start-point in second memory means even after a power source is turned OFF, and moving the frame by a difference of the values of both the memory means by the operation of sewing start-position recovery instructing means. CONSTITUTION:When a power source is turned ON, a pulse motor is initialized, and stopped at an initial position by a frame position sensor. This coordinates value is stored in first memory means. The means integrally adds the moving distance of an embroidering frame by the operation of a frame moving key and the moving distance indicated by embroidering data at the time of embroidering, updates it, and always stores present needle position coordinates. Second memory means updates and stores its sewing start-point each time an embroidering is started from the initial of a pattern, and stores content even after the power source is interrupted. The updating and storing of the point are executed by coping the content of the first means in the second means by a START key of embroidering start instructing means, and when the key of pressed, embroidering drive means is controlled to be driven by a difference of the values of the first and second means.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to automatic embroidery machines, and more particularly to a sewing start point return device.

【Example〕

The present invention will be explained below using examples. Configuration of O Control Circuit First, the configuration of the control circuit will be explained with reference to FIG. The central processing unit (flcPUc (hereinafter referred to as CPU)) uses a system bus line BUS (hereinafter referred to as CPU), which transfers commands and embroidery data through bidirectional communication with memory and I10 devices.
(hereinafter referred to as BUS). The read-only memory ROM stores a program for controlling the automatic embroidery machine. E E P ROM (ELECTRICALLY E
RASABLE and PR○G11l'AMMAB
LE ROM) ti, bar t' ux, 7 top (7'
) B A memory that preserves constant information, parameter information, etc. even after the power is turned off. This includes a storage area SeWOrg for sewing start point coordinate values as a second storage means, and a storage area file for sewing parameters such as pattern file name or pattern number, size, arrangement, etc. as a third storage means. The random access memory RAM temporarily stores the work area consisting of the stack area and flag storage area necessary for the CPU to operate, the data area for temporarily storing embroidered pigs, and the contents of the EEFROM. It consists of the Panfa area, etc. In the work area, there is a storage area curpos for current needle coordinate values as a first storage means. I10 interfaces l10-1 to l10-7 are B
Data is exchanged between peripheral devices and the CPU via the US. Some of the operation keys include the start key 5 TART key to start embroidery, the stop key 5 TOP key to pause embroidery halfway through, the alphanumeric key ALPHABET key and the numeric key used when selecting patterns etc. MEMORY key, memory key to register the pattern code of the selected pattern, save the embroidery data of the selected pattern to the floppy disk F
Read key R for giving instructions to read from D
EAD key, arrangement key for specifying character string arrangement information LAYOUT key, secondary size key 5IZE key for specifying pattern block size information, needle position key NEEDLE- for selecting the embroidery position relative to the needle position
POS key, font key FON for selecting font
T key Frame movement key J for manually moving the embroidery frame
OG KEYS and home position keys I (0M POS, etc.) that move the needle position to the sewing start point are included. The embroidery data is read out under the control of the 7D7B disk controller FDC and stored in the data area of the RAM, which serves as a pattern data storage means, via the BUS. It is used to obtain various signals for controlling the
These are the thread breakage detection sensor UPPE that detects thread breakage.
R-THREAD, frame position detection sensor
, sewing machine speed detection sensor VELOCITY, etc. The sewing machine motor ZM is a motor that drives the sewing machine. The pulse motors XM and YM drive and control the embroidery frame in the XY force directions, respectively, in this order. The actuator ACT is used to control the execution of other embroidery stitches, such as a thread loosening solenoid.
It is connected to cPU etc. via -110-5. The liquid crystal display device LCD is used to display the pattern or pattern number when selecting a pattern, and also to display information from the embroidery machine. Buzzer BZ is connected to the CPU via buzzer drive device BZDV and I10 interface I10-7. The digital/analog converter D/A is the liquid crystal display device L.
Outputs voltage for adjusting the brightness of the CD and the volume of the buzzer BZ. ○Functional Configuration Next, the functional configuration of the present invention will be explained with reference to FIG. In the same figure, when the power is turned on, the pulse motor XM. Operate YM at the initial cent and frame position sensor X-5EN. Stop at the initial position by the Y-5EN signal. This coordinate value curposO is stored in the first storage means curposO.
sNigi memorize. The first storage means curpos cumulatively adds and updates the amount of movement a of the embroidery frame caused by the operation of the frame movement key and the amount of movement instructed by the embroidery data during embroidery, and constantly stores the current needle position coordinate value. ing. The second storage means, seworg, is a memory that updates and stores the sewing start point every time embroidery is started from the beginning of the pattern, and uses the EEFROM storage area so that the memory contents can be saved and memorized even after the power is turned off. It has become. The updated memory of the sewing start point is an embroidery start command means 5.
When the TART key is pressed, it is determined whether the current embroidery is the beginning of the pattern using the 5tart flag, which will be described later.
If so, this is done by copying the contents of the first storage means C r p OS to the second storage means seworg. Sewing start point return command means When the ROMPOS key is pressed,
The value of the first storage means (current coordinates) and the value of the second storage means (
The embroidery frame drive means
The M and YM motors are driven and controlled to return to the static start point. Control operation (1) Overall control operation of the automatic embroidery machine First, the overall control operation of the automatic embroidery machine will be explained with reference to FIG. In the figure, S n (n-L2.3...) indicates the steps of each process. This is the step of selecting the embroidery pattern, and the character string is input by operating the ALPHABET keys (A-Z).
For one-point patterns, press the NUMERTC key (O~
9) Enter the code number and select the desired embroidery pattern. When the MEMORY key is pressed, the embroidery data of the selected embroidery pattern is read from the disk and placed in the data area of the RAM. Clear the 5tart flag, which is used to determine the beginning of the pattern. Auto-change the input status of S4 and S5 keys, and when the HOMPOS key is pressed, proceed to steps after S20, and 5TART
If a key is pressed, the process advances to S6, and if any other key is pressed, the process after 523 is executed, and the process returns to S4. When S5 determines that the ROMPOS key has been pressed, C
urI) The difference h omp o s between the value of O5 (current coordinates) and the value of seworg (sewing start point) is calculated. Drive XM and YM by the value of h omp o s. The pointer for extracting the embroidery data is set to the beginning of the pattern (the beginning address of the embroidery data), and the process returns to S4. If it is determined in S5 that another key has been pressed, it is determined whether a frame movement key has been operated. S if manipulated
Proceed to step 24. The amount of movement of the embroidery frame by the frame movement key is updated and stored in the first storage means curpos, and the process returns to S4. Other processing is executed and the process returns to S4. This is a step of determining whether the Start7 lag is set. If the 5tart flag is set, the process advances to S9; if the 5tart flag is not set, the process advances to S7. If the start flag is not set, it is the beginning of the pattern, so the first storage means cur, which is the current needle position coordinate value, is stored.
E as a second storage means for the contents of pos (sewing start point)
It is stored in the EFROM storage area seworg. Further, the file name of the current pattern is stored in the storage area file of the RAM as the third storage means. In this embodiment, the contents of the file specified by the file name consist of the code number of each character consisting of compressed pigs for the selected character string, and sewing parameters such as size, arrangement, sewing pinch, etc. For example, by connecting multiple embroidery machines to a host combination via LAN communication, etc.
The host computer controls the compressed data of each character in the character string selected by the host computer and converts it into expanded data according to sewing parameters such as size, arrangement, and sewing pitch, and sends the embroidery data to each embroidery machine. In this case, the contents of the file specified by the file name can be used as the expanded embroidery data. Set the start flag to 1. S9.510 Checks the signal from the upper thread breakage sensor UPPER-THREAD and whether the 5TOP key has been pressed. If not applicable, proceed to the steps after Sll; if applicable, proceed to S
18. Proceed to S19 and stop the sewing machine midway at the upper set of the upper shaft. 518.519 Upper thread breakage sensor UPPER-THREA in S9.510
It is checked whether the signal from D or the 5TOP key has been pressed, and in the processing step where this is the case, the sewing machine is stopped halfway at the upper set of the upper shaft of the sewing machine, and the process returns to S4. A sewing machine motor ZM is controlled to rotate the upper shaft of the sewing machine at an appropriate speed. Check the 1st phase detection sensor PHASE to see if it is in the upper group. If it is not in the upper group, the process returns to S9. This allows S
The steps after 13 are executed once for each stitch. One set of embroidery data (x$, yS) is fetched, and the pointer is incremented to point to the next memory location. The current movement amount (x$, yS) is stored in the first storage means curp.
Store in addition to os. Drive XM and YM by x s and y $, respectively. 516, 317 Based on the command content I of the embroidery data, it is determined whether embroidery 5 is finished. If the embroidery is not finished, the process returns to S9, and if it is finished, the sewing machine motor ZM is stopped in S17, and the embroidery is finished. (2) Control operation when the power is turned on Next, the control operation when the automatic embroidery machine is turned on will be explained with reference to the third factor. In the same figure, S n (n-41, 42, 43-...
) indicates each processing step. Clear/initialize the memory connected to the CPU. S42, S43 1 Check whether the needle is in the upper phase using the phase detection sensor PHASE, and if the needle is not in the upper phase, the LCD will display "UPNEEDLE".
BAR" is displayed and the button is instructed to move to the upper phase. This is because, if the pulse motors When the handwheel is turned by hand to the needle-up phase, the process proceeds to S44.The voltage level of the frame position detection sensor PHASE is checked, and the embroidery frame is driven to the initial position by the embroidery frame driving means XM and YM.First storage means curpos !: Initial coordinate value curpo
Set sO(XcurposO, YcurposO). EEPR the file name of the last embroidered pattern.
Third storage means of OM Reads out and displays from file. 347.548 Requests a disk that stores embroidery data with the corresponding file name, and when the disk is inserted, reads the embroidery data of the corresponding file name from the disk. Clear the start7 lag and return to S4. ○Examples of control for returning to the sewing starting point Next, specific control for returning to the sewing starting point will be explained using two examples. (1) When restarting embroidery from the beginning As an example of restarting embroidery from the beginning, we will explain what happens when some kind of problem, such as a defective embroidery stitch, is discovered during embroidery. That is, for example, in FIG. 5, among the character string rABCD, rAJ rBJ has completed the embroidery, and
The following describes a case where it is discovered that the thread tension is poor and the stitches are defective as a whole after sewing halfway through the stitch. In this case, when the user presses the 5TOP key, the sewing machine will stop at the needle drop point P, remove the embroidery frame from the embroidery machine, undo the defective stitches that have already been embroidered, and then reinstall the embroidery frame. Attach the embroidery machine to the embroidery machine and adjust the thread tension correctly. Thereafter, when the HOMPOS key is pressed, the embroidery frame is moved by point Q, which is the sewing start point. By pressing the 5TART key at position 2, embroidery can be resumed from point Q, which is the sewing start point. (2) When restarting interrupted embroidery As an example of restarting interrupted embroidery, if the embroidery machine stops due to a power outage etc. in the middle of embroidery, or when it is time for the end of the work day, press the 5TOP key to stop the embroidery machine. This is the case when the embroidery is resumed. That is, for example, in Fig. 5, the embroidery of "A" and "B" in the character string rABCDJ is completed, and when the embroidery machine stops due to a power outage etc. when it has sewn up to point P in the middle of r(J), Alternatively, we will explain the case where the embroidery machine is stopped by pressing the 5TOP key at the end of the workday.In this case, the operation is such that the next time the power is turned on, the embroidery frame will be moved and the needle drop position will be moved to the initial (top)) - position MO. Moving. After selecting and memorizing the pattern where embroidery was interrupted, HOMPO
When you press the S key, the coordinate values of the slow closing start point Q are stored in SeWorH of the EEPROM, so first, the difference between the coordinate values of this Q point and the coordinate values of the initial upper 7 position MO is calculated, and this The embroidery frame is moved by the difference, and the 1st drop position is made to coincide with the loose closing starting point Q. Next, use the frame forward function to move the embroidery hoop
Move it so that the drop position is at point P. By pressing the 5TART key in this state, embroidery can be restarted from point P, which is the gutter interruption point, and it is possible to form an embroidery pattern without any deviation in the pattern. [Effects of the Invention] As described above, according to the present invention, when starting loose closing from the beginning of a pattern, loose closing start point coordinate values and embroidery data are stored in a non-volatile memory such as an EEPROM that preserves the stored contents even after the power is turned off. Since the file name of the pattern is memorized, if the embroidery work is interrupted due to a power outage, etc.; after the power is turned on when restarting the embroidery work, if the same embroidery pattern as the previous one is selected, or if it is automatically selected, The file name of the embroidery pattern is displayed, and the embroidery frame is automatically moved by the difference between the current 1st position and the coordinate values stored in the memory by key operation, and the 1st position becomes the loose closing starting point. The effect is that it is possible to form a good embroidery pattern that matches accurately and has no pattern deviation.

[Brief explanation of the drawing]

The drawings relate to an embodiment of the present invention, and FIG. 1 is a functional block diagram, FIG. 2 is a flowchart showing the overall control operation of the automatic embroidery machine, and FIG. 3 is a control operation when the automatic embroidery machine is turned on. FIG. 4 is a block diagram of the control circuit, and FIG. 5 is a diagram showing a specific example of returning to the sewing starting point. curpos is the first storage means, SeWorg is the second storage means, file is the third storage means, HOMP
The OS key is a gap start point return command means, S7 is a sewing start point storage step, 514.324 is an update storage step, 520
~S22 is a sewing start point return step, and S45 is an initial coordinate value setting step. Patent Applicant: Snake Sewing Machine Industry Co., Ltd. Figure 3: Engraving of Figure 3 Drawing (no change in content) Written amendment to Figure procedure (method) August 2000 (1st 2nd, title of invention) Ishi Ten
Sewing start point return device 3 of Fukiso 7chi automatic embroidery machine, relationship with the person making corrections

Claims (1)

[Claims] I. In an automatic embroidery machine that controls the movement of an embroidery frame in the X and Y directions based on embroidery data in synchronization with a needle bar that moves up and down to form seams and embroidery, initial position setting when the power is turned on. an initial coordinate value setting step of setting initial coordinate values in a first storage means during operation; an updating storage step of sequentially updating and storing needle position coordinates in the first storage means as the embroidery frame moves; a sewing start point storing step of storing the coordinate values of the sewing start point, which are the values of the first storage means, in a second storage means that preserves and stores the stored contents even after the power is turned off; A sewing start point for returning the embroidery frame to the sewing start point by moving the embroidery frame by the difference between the coordinate values stored in the first storage means and the coordinate values stored in the second storage means by operating the return command means. A sewing start point return device for an automatic embroidery machine, comprising a return step. II. A claim characterized in that the step of storing the sewing start point includes the step of storing the file name of the pattern in a third storage means that preserves the stored contents even after the power is turned off, when embroidery starts at the beginning of the pattern. The sewing start point return device for an automatic embroidery machine according to item 1.