JPH06182068A - Automatically sewing machine - Google Patents

Abstract

PURPOSE:To enable the implementing of a testing of a seam position data without lowering productivity of sewing work with an automatically sewing machine by making quick movement of a needle and a work holding means relatively to a desired position corresponding to the stitch position data possible. CONSTITUTION:A table 3 is arranged on a base 2 to place a holding frame 7 for holding a cloth to be worked while a sewing machine body 4 is arranged at a rear side part of the base 2. The holding frame 7 for holding the cloth to be worked is made free to be moved longitudinally and horizontally by Y-way and X-way drive mechanisms 10 and 23, and a needle H and the holding frame 7 are moved relatively following numerous stitch position data to form continuous stitches. In an automatically sewing machine of such a type, the selection of a first mode to move the holding frame 7 in response to each stitch position data for one stitch and a second mode to move the holding frame 7 following a stitch position data for numerous stitches is made possible and thus, the holding frame 7 can be moved at one time to a stitch position specified by a numeric key.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic stitch sewing machine which forms a continuous stitch while making relative movement between a needle and a workpiece holder, and more particularly to a needle and a workpiece according to stitch position data. The present invention relates to an automatic sewing machine capable of testing and correcting stitch position data while rapidly moving relative to a holding device.

[0002]

2. Description of the Related Art Conventionally, an automatic sewing machine generally has a memory storing a large number of stitch position data, and a needle and a workpiece (work cloth) holding device according to the stitch position data stored in the memory. It is configured to form continuous stitches on the work cloth by performing relative movement between them. Then, if there is an input error in the stitch position data stored in the memory, if the desired stitch pattern is not formed on the work cloth based on the input error in the stitch position data, or if the needle and work cloth are held. When the stitch pattern is not accurately formed at a predetermined position on the work cloth due to a problem such as a relative movement range with the device, a desired continuous stitch cannot be formed. It is necessary to test and correct the stitch position data stored in the.

In such a case, in the conventional automatic sewing machine, the stitch data for one stitch is stored based on the stitch position data stored in the memory in a state where the needle is stopped upward without reciprocating the needle. The stitch position data is tested by moving only the work cloth holding device from the sewing start position to a predetermined position one by one, and the correction is made if necessary.

[0004]

However, when the stitch position data is tested, the work cloth holding device in the conventional automatic sewing machine moves only stitch data for one stitch from the sewing start position. A great deal of time was required to test the stitch position data. Therefore, there is a problem that the stitch position data cannot be tested efficiently.

Also, when the stitch position data corresponding to a predetermined position in the stitch pattern having a large number of stitches is corrected or the data of a plurality of positions in the stitch position data is corrected by changing the design or the like. Since the work cloth holding device moves only one stitch of stitch data from the sewing start position, it takes a lot of time for the work cloth holding device to reach a position corresponding to the stitch position data to be corrected. . Then, the correction of the stitch position data is performed after the work cloth holding device is moved to a position corresponding to the stitch position data to be corrected as described above. As a result, it takes a lot of time to correct the stitch position data, which causes a problem that the data correction work cannot be efficiently performed.

Further, during the test of the stitch position data or the work of correcting the stitch position data, the automatic sewing machine cannot perform the sewing work of the other stitch position data, which results in the productivity. There was also a problem that the value would decrease.

The present invention has been made in order to solve the above-mentioned problems of the prior art, in which the needle and the work holding means are moved relatively quickly to the target position in accordance with the stitch position data. It is an object of the present invention to provide an automatic sewing machine capable of efficiently performing a test of stitch position data, a correction operation and the like without lowering the productivity of the sewing work by the automatic sewing machine.

[0008]

In order to achieve the above object, the present invention forms a continuous stitch while performing relative movement between a needle and a work holding means according to a large number of stitch position data. In the automatic sewing machine configured as described above, the sewing machine has a function of performing the relative movement without reciprocal movement of the needle, and the function is one of many stitch positions that form a continuous stitch pattern. It is configured to include a designating unit for designating an arbitrary stitch position and a moving unit for performing the relative movement to the stitch position designated by the designating unit based on the stitch position data.

[0009]

According to the present invention having the above-mentioned structure, when the stitch position data is tested or modified, an arbitrary stitch position is selected from a large number of stitch positions which form a continuous stitch pattern through the designating means. It is specified. After that, the needle and the workpiece holding means are relatively moved by the moving means to the stitch position designated by the designation means based on the stitch position data.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a schematic perspective view of the automatic sewing machine, in which the holding frame 7 (which includes an upper presser holding frame and a lower base holding frame) for holding a work cloth on a base 2 of the automatic sewing machine 1. ) Is mounted on the table 3. Further, the sewing machine body 4 is supported by the rear end of the base 2 at its rear end, and its arm portion 5 is disposed above the table 3 so as to face forward. A sewing needle H is vertically movable at a lower front portion of the arm portion 5 of the sewing machine body 4, and a stitch is formed on a work cloth at the rear end portion of the arm portion 5 through the sewing needle H. A sewing machine motor 6 that drives a plurality of drive mechanisms for forming is attached. The needle H is reciprocated with respect to the work cloth held by the holding frame 7 at the time of sewing, and is stopped at an upper position separated from the holding frame 7 at the time of controlling the movement of the holding frame 7 described later.

Next, the Y-direction drive mechanism 10 for moving the holding frame 7 in the front-back direction will be described. Base 2
Guide rails 11 extending in the front-rear direction are respectively provided immediately below the table 3 at positions near the right end and the left end of each of the pulleys, and a pulley 12 rotatably supported at the front end of each guide rail 11 and a base. Timing belts 15 are respectively stretched over pulleys 14 (only one of which is shown) fixed to the left and right ends of a Y-direction drive shaft 13 arranged in the left-right direction (X direction) at the rear end of the base 2. It is set up. The Y-direction drive shaft 13 is pivotally supported by a plurality of pivotally supporting members 17 arranged on the rear side of the table 3. And each guide rail 11
The support frame 18 placed on the guide rail 11
The support frames 18 are configured so as to be movable in the front-rear direction, and these support frames 18 are attached to corresponding timing belts 15 by fixing fittings 19 (only one is shown) at positions facing each other.

The movable beam 20 is disposed in the left-right direction at a position higher than the upper surface of the table 3, and the right end portion and the left end vicinity position of the movable beam 20 are fixed to the support frame 18, respectively. Further, a Y-direction drive motor 21 (see FIG. 2) is attached to a predetermined position below the table 3, and is rotated via a drive gear or the like fixed to the drive shaft of the Y motor 21. A timing belt 40 is stretched over the pulley and the pulley 22 fixed to the Y-direction drive shaft 13.

Therefore, the pair of support frames 18 are driven by the drive of the Y motor 21, the drive gear, the pulley (not shown), the timing belt 40, the pulley 22, the Y-direction drive shaft 13, the timing belt 15, and the fixing bracket 19. The movable beam 20 moves in the front-rear direction at the same time as the movable beam 20 moves in the front-rear direction in synchronization.

Next, the X-direction drive mechanism 23 for moving the holding frame 7 in the left-right direction will be described. A guide rail 24 is fixed to the middle of the front surface of the movable beam 20 over the entire length of the movable beam 20, and an auxiliary guide rail 25 is fixed to the upper end portion of the front surface in parallel with the guide rail 24. Further, immediately below the movable beam 20, a rack member 26 having a rack formed on the upper surface is arranged in parallel with the movable beam 20, and the rack member 26 is supported so as to be movable in the left-right direction with respect to the movable beam 20. Has been done.

On the front side of the movable beam 20 and the rack member 26, a movable frame 29 consisting of a first movable frame 27 and a second frame 28, which are substantially L-shaped in side view, is arranged parallel to the movable beam 20. , These movable frames 27, 2
8 is a rack member 2 at a lower end thereof at a position separated by a predetermined distance.
6 are fixed to each other with bolts. On the other hand, the X-direction drive shaft 30 disposed in the front-rear direction at substantially the center of the movable beam 20 in the left-right direction is rotatably and longitudinally movable by a pivot bracket 31 fixed to the base 2. A drive pinion 32, which is supported and meshes with the rack of the rack member 26, is fixed to the front end portion thereof which is located inside the movable beam 20. Further, in synchronization with the movement of the movable beam 20 in the front-rear direction, the X-direction drive shaft 30 is driven inside the movable beam 20 so that it can always move in the front-rear direction while maintaining a predetermined positional relationship with the rack member 26. Two pairs of movement regulating rollers (not shown) that are in contact with the pinion 32 from the front and the rear are pivotally mounted.

A key groove (not shown) is formed on one side of the outer circumference of the X-direction drive shaft 30 over substantially the entire length thereof, and the key groove is engaged on the front side of the pivot bracket 31. A drive pulley to which a matching key is fixed is slidably mounted on the X-direction drive shaft 30 and capable of transmitting a driving force.
Further, on the left side of the X-direction drive shaft 30, the X-direction drive shaft 30
An X-direction drive motor 33 for driving the motor and a gear box 34 for reducing the number of rotations thereof are fixed to the base 2.
A timing belt 36 is stretched around a drive pulley and a pulley 35 fixed to the gear shaft of the final gear in the gear box 34. Therefore, the drive pinion 32 is rotationally driven by the drive of the X-direction drive motor 33 via the gear box 34, the timing belt 36, the drive pulley, and the X-direction drive shaft 30, and the rotation of the drive pinion 32 causes the rack member 26 and the first member to rotate. The first movable frame 27 and the second movable frame 28 move integrally to the left or right along the movable beam 20 while being guided by the guide rails 24 and the auxiliary guide rails 25.

In the above automatic sewing machine 1,
The mechanism for moving the holding frame 7 for holding the work cloth in the left-right direction and the front-back direction is the same as that described in Japanese Patent Application Laid-Open No. 4-15080, so refer to that publication for details.

Next, the control system of the automatic sewing machine constructed as described above will be described with reference to FIG. FIG. 2 is a control block diagram of the automatic sewing machine, which has a control circuit moving means 50 having a CPU as a core. A ROM 51, a work memory 52, a sewing data memory 53, and an input / output interface 54 are connected to the control circuit 50.

The ROM 51 stores a movement control program (which will be described later) for controlling the movement of the work cloth holding device 7 and other various programs necessary for controlling the automatic sewing machine. It takes R
Various calculations are performed based on the programs stored in the OM 51. Further, the work memory 52 is composed of a random access memory (RAM), and as shown schematically in FIG. 4, the operation mode PRO of the automatic sewing machine is also shown.
A PRO area 52A for storing (there are two operation modes, a program mode and a sewing mode, the program mode is represented by "1" and the sewing mode is represented by "0"), and a stitch position at a predetermined address in the sewing data memory 53. When reading data, an ADR area 52B storing an address ADR to be read, a programming device 70 described later
A POX area for storing the step number POX (step number) of the X motor 33 required to move the work cloth holding device 7 in the left-right direction by operating the plus (+) key 64 and the minus (-) key 65 provided in 52C, similarly, a POY area 52 for storing the step number POY (step number) of the Y motor 21 required to move the work cloth holding device 7 in the front-back direction.
D, and the rotation direction PO of the X motor 33 and the Y motor 21
A POSYM area 52E for storing SYM (left and right, front and rear movement directions of the work cloth holding device 7) is provided.

The sewing data memory 53 is composed of a RAM like the working memory 52, and starts sewing from an absolute origin (which is set at one of the four corners of the holding frame 7) as shown in FIG. A storage area 53A for storing the stitch position data up to the position, and a storage area 53B for sequentially storing the stitch position data for each stitch necessary for forming the stitch pattern at each address are provided. There is. here,
The stitch position data stored in each of the storage areas 53A and 53B is the step counts POX and P of the X motor 33 and the Y motor 21.
OY and the rotation direction POSYM of each motor 33, 21.

Further, the control circuit 50 includes a control panel 55, an X motor driver 56, a Y motor driver 57, a sewing machine motor driver 58, a floppy disk drive device 59, and a program device 70 via the input / output interface 54. It is connected.

Here, the control panel 55 is provided with a data input switch and a data output switch. Here, the data input switch reads from the floppy disk drive device 59 the stitch position data for forming the sewing pattern stored in the floppy disk FD mounted on the floppy disk drive device 59, and inputs it through the input / output interface 54. The data output switch is a switch that is pressed when the data is stored in the sewing data memory 53, and the data output switch is used to output the stitch position data stored in the sewing data memory 53 via the input / output interface 54 and the floppy disk drive device 59. This is pressed when the data is stored in the floppy disk FD.

An X motor 33 is connected to the X motor driver 56, and the X motor driver 56 positions the X motor 33 in a predetermined rotation direction based on a drive control signal output from the control circuit 50. Only a fixed amount is step-driven. Further, the Y motor driver 57 includes a Y motor 2
1 is connected, and this Y motor driver 57
Similar to the motor driver 56, the Y motor 21 is stepwise driven by a predetermined amount in a predetermined rotation direction based on a drive control signal output from the control circuit 50.

Further, the sewing machine motor 6 is connected to the sewing machine motor driver 58, and the sewing machine motor driver 58 rotates and stops the sewing machine motor 6 based on a drive control signal output from the control circuit 50. Is to control.

Further, the floppy disk drive device 5
Reference numeral 9 is for reading the stitch position data from the floppy disk FD mounted on it and for writing the stitch position data in the floppy disk FD.

Next, the programming device 70 will be described with reference to FIGS. FIG. 3 shows the programming device 7.
It is a perspective view of 0. Here, the program device 70 is for creating and correcting the stitch position data necessary for forming the stitch pattern, and is provided with various keys and the like. On the upper surface of the program device 70, a program (P) key 60 for instructing the automatic sewing machine 1 to shift from the sewing mode to the program mode or vice versa (command from the program key 60 is PRO of the working memory 52). The area 52A is stored as "1" indicating the program mode or "0" indicating the sewing mode), and the holding frame 7 is moved in any XY direction through the X-direction drive mechanism 23 and the Y-direction drive mechanism 10. , A jog key 61 for outputting an output signal for moving to, a numeric key 62 for designating various commands and the number of stitches, a display device 63 for displaying the number of stitches designated by the numeric key 62 in three digits, sewing data. Based on the stitch position data stored in the storage area 53B of the memory 53, a plus (+) key 64 for outputting a command for moving the holding frame 7 in the XY directions and a marker Eggplant (-) key 65, on
There are a first mode in which the holding frame 7 is intermittently moved for each stitch position data for one stitch when turned off (pressed / non-pressed), and a second mode in which the holding frame 7 is moved according to the stitch position data for multiple stitches. Input mode specification key (F key) for switching
66, an F lamp 67 formed of an LED for displaying that the input mode designation key 66 has been turned on, and the stitch position data at the stitch position changed based on the operation of the jog key 61, in the sewing data memory 53. Storage area 53
A load (L) key 68 for loading B is provided. The numeral key 62, the plus (+) key 64, the minus (-) key 65, and the like constitute the designation means.

Next, the operation of the automatic sewing machine 1 configured as described above will be described with reference to FIGS. 6 and 7.
6 and 7 show flowcharts of the movement control program for the holding frame 7. First, in step (hereinafter abbreviated as S) 1, initialization such as clearing each storage area in the working memory 52 is performed, and The operation mode is set to the sewing mode. Succeedingly, in S2, it is determined whether or not the program (P) key 60 is pressed, and if it is pressed (S2: YES), the process proceeds to S3, while if it is not pressed (S2: NO), the sewing mode is pressed until it is pressed. Stay in.

When the program key 60 is pressed to correct the stitch position data (S2: YES), a drive control signal is sent to the X motor driver 56 and the Y motor driver 57 to move the holding frame 7 to the absolute origin position. Is output to perform step control of the X motor 33 and the Y motor 21, and the holding frame 7 is moved to the absolute origin position (S3). Whether the holding frame 7 is set at the absolute origin position is detected by a micro switch, a photo sensor, or the like. When it is confirmed that the holding frame 7 is set to the absolute origin position, the X motor 33 and the Y motor 21 are stopped, and "1" is set in the PRO area 52A of the working memory 52 (S).
4). As a result, the sewing mode is switched to the program mode. In addition, the display device 63 displays “3” of “000”.
Digits are displayed (S4).

Next, it is judged whether or not the data input switch provided on the control panel 55 is turned on (S5),
If it is turned on (S5: YES), the process proceeds to S6, while if it is not turned on (S5: NO), the process waits until there is a key input from the data input switch. When the data input switch is turned on (S5: YES), the stitch position data for forming the stitch pattern stored in the floppy disk FD is stored in the floppy disk drive device 5.
9 and the read stitch position data is sequentially stored at a predetermined address in the storage area 53B of the sewing data memory 53 (S6). After that, the key operation by the operator (in the present embodiment, the key operation of the number 1 key and the plus (+) key 64 of the number key 62)
Based on the above, the stitch position data necessary for moving the holding frame 7 from the absolute origin position to the sewing start position is read from the stitch position data stored in the storage area 53B of the sewing data memory 53. A drive control signal is output to the X motor driver 56 and the Y motor driver 57 in accordance with the stitch position data thus read, and as a result, the holding frame 7 drives the X motor 33 and the Y motor 21 to rotate. It moves from the absolute origin position to the sewing start position via (S7). Then, the address of the stitch position data at the sewing start position is stored in the ADR area of the work memory 52 (S8).

Continuing the description based on the flowchart of FIG. 7, it is determined in S9 whether the F key 66 has been pressed. When the F key 66 is pressed (S
9: YES), after the F lamp 67 is turned on (S10), the process returns to S9. If the F key 66 has not been pressed, or if the F key 66 has not been pressed again after the F lamp 67 has been turned on (S9: NO), a display other than "000" is displayed on the display device 63 by operating the number keys 62. It is determined whether or not is performed (S11). When the display of the display device 63 is "000" (S11: NO), S9
On the other hand, when the display is not “000” while returning to (S11: Y
For ES), the process proceeds to S12. In S12, the number key 6
It is determined whether the plus (+) key 64 or the minus (-) key 65 has been pressed together with 2. At this time, a 3-digit display is performed on the display device 63 in accordance with the depressed numeric key 62.

If either the plus key 64 or the minus key 65 has not been pressed (S12: NO), the process returns to S9, but if the key has been pressed (S12: YES), the F lamp 67 at S13. It is determined whether is lit. The F key 66 is in the first mode (a mode in which the holding frame 7 is moved for each stitch position data for one stitch) when it is not pressed, and in the second mode (when the holding frame 7 is in a plurality of stitches when pressed). This is for specifying the mode for moving in accordance with the stitch position data). Therefore, when the F lamp 67 is not lit (S13: YES), the first mode is set and the F lamp 67 is lit. If (S13:
No) means that the second mode is set.

When the F lamp 67 is not lit (S
13: NO), the storage area 53B of the sewing data memory 53
The stitch position data for one stitch is read from
The absolute position of the stitch position data at that time is calculated based on the absolute origin position (S14). Then, it is determined whether the calculated absolute position exceeds the sewable area defined by the holding frame 7 (S15). If it is over (S15: YES), error processing is performed (S16). On the other hand, when the absolute position of the sewing data is within the sewable area (S15: NO), the holding frame 7 is moved by one stitch (S17). In S18, 1 is subtracted from the 3-digit display number displayed on the display device 63, and it is determined whether the subtracted display number is "000" (S18). If the displayed number is not "000" (S18: NO), the address of the ADR area 52B of the work memory 52 is incremented by 1 or decremented in S31, and then the process returns to S14 again and the stitch position for one stitch is returned. The holding frame 7 is moved for each data. Here, the address of the ADR area 52B is incremented by the plus (+) key 64 in S12.
Is pressed, and the address of the ADR52B area is incremented by a minus (-).
This is the case when the key 65 is pressed.

Therefore, by repeating the processes of S14 to S18, the holding frame 7 is stepped up to the position of the stitch position data to be corrected displayed on the display device 63 for each stitch position data for one stitch. It is driven. As described above, when the first mode is set, the holding frame 7 is stepwise driven by the stitch position data for each stitch.

Further, in S18, when the display number displayed on the display device 63 becomes "000" (S18: Y
Since the holding frame 7 is moved to the position of the stitch position data to be corrected in (ES), the stitch position data is corrected at this point (S30). The correction of the stitch position data is performed by selectively operating the keys provided on the programming device 70 while combining them. When the correction of the stitch position data is completed, the process ends.

On the other hand, when the F lamp 67 is turned on in S13 (S13: YES), the stitch position data for one stitch is read from the storage area 53B of the sewing data memory 53 (S19), Further, the absolute position of the read stitch position data is calculated based on the absolute origin (S20). Then, it is determined whether or not the absolute position of the calculated stitch position data exceeds the sewable area defined by the holding frame 7 (S2).
1). When it is over (S21: YES),
Error processing is performed (S22). If the absolute position of the sewing data is within the sewing area (S21: NO),
Only one is subtracted from the 3-digit display number displayed on the display device 63, and it is determined whether the subtracted display number is "000" (S23). If the display number is not "000" (S23: NO), the address of the ADR area 52B of the working memory 52 is incremented or decremented by 1 in S32, and then the process returns to S19 and the processes of S19 to S23 are performed again. The stitch position data is read one stitch at a time and the ADR
The address of the area 52B is incremented or decremented by one. As the number of addresses increases or decreases, the data in each POX area 52C, POY area 52D, and POSYM 52E in the work memory 52 is also added or subtracted.

When the display number displayed on the display device 63 becomes "000" (S23: YES), the address stored in the ADR area 52B at that time, the POX area 52C, the POY area 52D, and , PO
By controlling the drive of the X motor 33 and the Y motor 21 based on each data stored in the SYM area 52E, the holding frame 7 is moved to the position corresponding to the address (the final position with the stitch position data to be corrected). ) Is temporarily moved (S24). Thus, when the second mode is set, unlike the case of the first mode, the holding frame 7 is not moved by one stitch, but there is stitch position data to be corrected. Add data sequentially up to the position, or
When the subtraction is performed and the stitch position data to be corrected is confirmed, the holding frame 7 is temporarily moved. Therefore,
When the position of the stitch position data to be corrected exists after the data for a large number of stitches, the holding frame 7 can be moved to a desired correction position in an extremely short time by setting the second mode. . As a result, the work of correcting the stitch position data can be performed extremely quickly.

After the holding frame 7 is moved to the predetermined position as described above, the stitch position data is corrected in S30 as in the above (S30). The method for correcting the stitch position data is the same as the above case.

Although not described in the flow shown in FIG. 7, if the user operates the F key 66 by mistake, a plus (+) sign is displayed with "000" displayed on the display device 63.
The F lamp 67 can be turned off by pressing the key 64 or the minus (-) key 65.

Next, in order to facilitate understanding, a concrete example will be described. In each case described below, it is assumed that the processes of S1 to S8 have already been completed. First, a case where the operator corrects the stitch position data which is three stitches after the sewing start position will be described. In this case, since the amount of movement of the holding frame 7 is three stitches, it is desirable to work in the first mode. Therefore,
The operator presses the F key 66 to correct the position data after 3 stitches.
Press the 3 key of the numeric keys 62 without pressing, and then press the plus (+) key 64 (S9 to S1).
2).

At this time, the three-digit display number "003" is displayed on the display device 63, and the first mode is executed based on the fact that the F lamp 67 is not lit (S13: NO). . From this, S14, S15, S17, S1
In order to move the holding frame 7 by one stitch in accordance with 8, the stitch position data corresponding to the contents of the ADR area 52B of the working memory 52 is read, and the holding frame 7 is moved by one stitch based on the data. . Then, as long as there is still the next stitch position data in the storage area 53B of the sewing data memory 53, the address of the ADR area 52B of the work memory 52 is incremented by 1 to read the next stitch position data (S31). After that, the same processing is repeated three times until the display number on the display device 63 becomes “000”. As a result, the holding frame 7 is moved one stitch at a time to the position of the stitch position data for three stitches. After that, the stitch position data is corrected through the respective keys on the programming device 70.

Next, the case of correcting the stitch position data 500 stitches after the sewing start position will be described. In this case, since the movement amount of the holding frame 7 is 500 stitches,
It is desirable to work in the second mode. Therefore, the operator inputs 5, 0, 0 through the number keys 62 and corrects the stitch position data after 500 stitches and presses the F key 66 (in this case, the number keys 62 are operated). You may press the F key 66 before, or press the F key 66.
May be pressed first. same as below. ), And the plus (+) key 64 is pressed. At this time, the display device 63 displays the display number of "500" and the F lamp 67 is turned on (S9 to S12). The second mode is executed based on the F lamp 67 being lit (S13: YES). And S13, S19, S20, S2
1 and S23, the stitch position data is read until the display number displayed on the display device 63 becomes "000", and the ADR area 52 of the working memory 52 is read.
The address of B is added. This series of processing is 500
At the time when the operation is performed, the data necessary for moving the holding frame 7 to the position after 500 stitches is stored in each area in the work memory 52, and the holding frame 7 is moved to 500 positions based on these data. It is temporarily moved to the final position after the needle (S24). After that, the stitch position data is corrected through the respective keys on the programming device 70.

When it is desired to correct the data 200 stitches before the intermediate position, it is desirable to perform the operation in the second mode because the movement amount of the holding frame 7 is 200 stitches. Therefore, the operator uses the number keys 62 to correct 2, 0, 0 to correct the stitch position data before 200 stitches.
Is input, the F key 66 is pressed, and further, the minus (−) key 65 is pressed. At this time, the display device 63
"200" is displayed on the display, and F lamp 6
7 is turned on (S9 to S12). The second mode is executed based on the F lamp 67 being lit (S13: YES). And S13, S19, S20,
According to S21 and S23, the stitch position data is read until the number displayed on the display device 63 reaches "000", and the address of the ADR area 52B of the working memory 52 is subtracted. This series of processing is 2
At the time when the operation is performed 00 times, the data necessary for moving the holding frame 7 to the position 200 needles before is stored in each area of the working memory 52, and the holding frame 7 is stored based on these data. It is temporarily moved to the final position before 200 stitches (S24). After that, the stitch position data is corrected through the respective keys on the programming device 70.

Further, when the operator wants to add the stitch position data next to the last stitch position data in the sewing data memory, the number 9 of the numeric keys 62 is depressed three times, and then the F key is pressed. After pressing the key 66, the plus (+) key 64 is pressed (S9 to S12). In this case, “999” is displayed on the display device 63, and the F lamp 6
7 is turned on. At this time, the second mode is executed based on that the F lamp 67 is turned on (S13: YES). However, when "999" is displayed on the display device 63, the control circuit 50 is operated. Is recognized as a special command, the data up to the last stitch position data in the sewing data memory 53 is added first, and then the holding frame 7 is temporarily moved from the current position to the last stitch position (S19). , S20, S21, S23, S24).

When the operator wants to immediately move the holding frame 7 from the current position to the sewing start point, the number 9 of the numeric keys 62 is depressed three times, and then the F key 66 is depressed. Then, the minus (-) key 65 is pressed. Also in this case, the combination of the key operation is recognized as a special command through the control circuit 50, and the stitch position data of the sewing start point is added first, and then the holding frame 7 is changed from the current position to the sewing start point. Move to the position at once.

As described in detail above, in the automatic sewing machine 1 according to this embodiment, when the data of the predetermined position in the stitch position data is corrected, the holding frame 7 is set to 1 depending on whether or not the F key 66 is pressed. A first mode in which the stitch position data for each stitch is moved (a mode when the F key 66 is pressed) and a second mode in which the holding frame 7 is moved according to the stitch position data for a large number of stitches (the F key 66 is not pressed). Mode), and when the first mode is selected, the holding frame 7 is moved for each stitch position data for one stitch, and when the second mode is selected, the holding frame 7 is set to the predetermined stitch position data. Since the holding frame 7 is moved to the position at a time, the holding frame 7 can be quickly moved to the target position in accordance with the stitch position data to be corrected. As a result, according to the automatic sewing machine 1 of the present embodiment, it is possible to efficiently test and correct the stitch position data without lowering the productivity of the sewing work.

Further, as in the case of correcting the data, it is possible to efficiently perform the so-called test work in which the sewing data is tested and the data is appropriately corrected based on the result.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various improvements and modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, among the three-digit display number displayed on the display device 63,
Since "999" is used as a special command as described above, it is possible to immediately move up to 998 stitches before and after the sewing start position. However, without being limited to this, it is possible to move up to 99 stitches or 9999 stitches. It may be possible to immediately move to (in this case, four-digit display).

Further, the holding frame 7 can be immediately moved to the position data by adding attribute data relating to the position data to the type of the position data, such as normal sewing data and skip feed data. It is also possible to Further, in this embodiment, the stitch position data recorded on the floppy disk FD is stored in the sewing data memory 53, but the recording paper on which the stitch pattern is recorded is held in the holding frame 7, and the jog key 61 is appropriately pressed. The holding frame 7 is operated to sequentially move the stitch pattern of the recording paper along the stitch drop position by an amount corresponding to one stitch of the sewing needle H, and then the L key 68 is pressed to make the stitch pattern. Needless to say, the stitch position data for one stitch may be stored in the sewing data memory 53 one by one.

[0049]

As described above, according to the present invention, it is possible to quickly move the workpiece holding means to the target position in accordance with the stitch position data, thereby improving the productivity of the sewing work by the automatic sewing machine. It is possible to provide an automatic sewing machine capable of efficiently performing stitch position data testing, correction work, etc. without lowering the sewing position data, and a great effect is provided.

[Brief description of drawings]

FIG. 1 is a perspective view of an automatic sewing machine.

FIG. 2 is a control block diagram of an automatic sewing machine.

FIG. 3 is a perspective view of a programming device.

FIG. 4 is an explanatory diagram schematically showing the contents of a work memory.

FIG. 5 is an explanatory view schematically showing the contents of a sewing data memory.

FIG. 6 is a flowchart of a holding frame movement control program.

FIG. 7 is a flow chart of a holding frame movement control program.

[Explanation of symbols]

 1 Automatic sewing machine 4 Sewing machine main body 7 Work cloth holding frame 10 Y direction drive mechanism 21 Y motor 23 X direction drive mechanism 33 X motor 50 Control circuit (moving means) 51 ROM 52 Working memory 53 Sewing data memory 62 Numeric key (designation) Means) 64 Plus (+) key (designating means) 65 Minus (-) key (designating means) 70 Program device

Claims (1)

[Claims] 1. An automatic stitch sewing machine configured to form a continuous stitch while relatively moving between a needle and a work holding means according to a large number of stitch position data, wherein the sewing machine reciprocates the needle. It has a function of performing the relative movement without any movement, and the function is a designating means for designating an arbitrary stitch position from among a large number of stitch positions forming a continuous stitch pattern, An automatic sewing machine comprising: a moving unit that performs the relative movement to the stitch position designated by the designating unit based on the stitch position data.