JPS62266095A - Data forming apparatus for sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a sewing machine, and more particularly to a sewing machine capable of criss-crossing.

Prior Art The present applicant previously applied boiled crimped stitches to predetermined areas of each sewing area A-F of the processed fabric (left sleeve) 1<1 as shown in FIG. 2, as shown in FIG. In a sewing machine that performs sewing, the number of stitches and the lifting data for each area Δ to F of 1 are set and stored in advance on the workpiece cloth, and based on this data, the adjustment of the sub-feed dog to the main feed dog is performed. An application was filed for a sewing machine in which the cloth feed depth could be changed and controlled for each area A to F to perform criss-cross stitching in each area A to F of 1 on the workpiece fabric (Patent Application No. 55-38054 and Patent Application No. Showa 56-1
44128).

However, as shown in FIG.
F is also in a symmetrical position.[When performing erging stitches for 2 on a petroleum work cloth having areas A' to F-, 'L' and 'l' are sewn in the opposite sewing area from F' to NrII on a work cloth for the left sleeve.
Since J is being performed, it was not possible to use the data for 1st uneven stitching on cloth.Therefore, a new program was created for 2nd uneven stitching on petroleum processed fabric. The creation work required a great deal of time.

Purpose This invention is to create a program for uneven stitching on one of the left-right symmetrical workpiece fabrics when uneven stitching is performed at symmetrical positions with the same unevenness on both sides. To provide a sewing machine which can automatically create a program for serration stitching of the other workpiece cloth based on the program data, thereby shortening the program creation time.

Embodiment Hereinafter, an example of a data creation device for a sewing machine embodying the present invention will be described with reference to the drawings.

In Fig. 5, sewing machine 1 has a start switch 2 at the lower right side.
A fabric Kl is fixedly fixed to a table 3 on which a fabric Kl is accurately guided to the sewing position by a work fabric guide device 4 disposed on the fabric feeding side thereof.

K2 includes a seam forming means including a sewing machine needle 5, a cloth feeding device including a main feed dog 6 and a sub feed dog 7 and capable of changing the amount of setting by adjusting the cloth feed hanging, and a setting part of the cloth feeding device. Equipped with a pulse motor 8 etc. for changing the speed, it is possible to perform sewing by changing the amount of offset in each area in K1 and K2, which has a plurality of sewing areas A-F, F' to A'. There is. The detailed structure and operation of each of these devices are described in the patent application filed in 1986-3 by the present applicant.
8054 and Japanese Patent Application No. 56-144128.

Next, a control device for driving and controlling the sewing machine 1 will be explained.

The i-control device is integrated into a control box 11 installed at the back right of the sewing machine table 3 shown in FIG. Numerical keys 12 are also provided for setting data on the amount of distortion. On the right side of the number keys 12, there is a mode selection key 13 for selecting either program creation work or sewing work. Start key 14 for starting the program creation processing operation. [RAM23 where the cogram data is written later]
A pattern key 15 is used when specifying the storage location of the n-gram data and when reading the same dongram data; a division key 16 is used when setting the number of sewing areas;
An input key 17 is used to input data values set using the numerical keys 12, and an end key 18 is used to terminate the program creation process.

The reversing switch 19 is provided on the front left side of the numerical key 12, and when turned on from off, the reversing switch 19 reads out the readout order of the number of stitches and the amount of criss-crossing data of each sewing area stored in the sewing order from the opposite order. used in cases. Display @ position 20 is the front 1 of the control box 11
According to the operation of the numerical keys 12, the number of sewing areas, the number of stitches, and the sewing pattern data at the time are displayed.

Next, the control circuit built into the control box 11 will be explained.

In FIG. 6, a microcomputer MC serves as a first and second data creation means (hereinafter referred to as CP).
) 21, a read-only memory (hereinafter referred to as ROM) 22, a readable and writable memory (hereinafter referred to as RAM) 23 as a storage device, and an input/output port.
1-24. Each input terminal of the input/output port 24 is connected to the start switch 2. Each key 12-18
A sewing machine motor drive circuit 26 for driving and controlling the sewing machine motor 25, a pulse motor driving circuit 27 for driving and controlling the pulse motor 8, and a sewing machine motor drive circuit 26 for driving and controlling the sewing machine motor 25 are connected to each output terminal of the doujinshi output port 24. A display drive circuit 28 that drives and controls the display device 20 is connected.

=6- On the other hand, in this embodiment, the RAM 23 can store sewing programs for the work cloth of 10 sewing patterns, and each sewing program stores stitch number data in each sewing area of the work cloth and stitch count data in each of the areas. It includes rotation direction and rotation amount data of the pulse motor 8 that corresponds to the amount of set-up data.

In addition, the CPtJ21 reads the sewing program data stored in the RAM 23 in the order of the areas to be manufactured, outputs a control signal to the pulse motor drive circuit 27 based on the data, and outputs a control signal to the pulse motor drive circuit 27 according to the reading order. reads the data of each area in the reverse order, saves that data as data that allows the same serration stitch to be made in symmetrical positions on the workpiece cloth in the sewing program, and saves the data A control signal is output to the pulse motor drive circuit 27 based on the pulse motor drive circuit 27.

Next, the operation of the sewing machine constructed as described above will be explained with reference to the flowchart of FIG. 7, which explains the operation of the microcomputer MC.

First, in each sewing area A to F of 1 on the workpiece cloth shown in FIG. 1, as shown in FIG. This section explains how to create a program.

Now, when the power switch (not shown) is pressed with the mode selection key 13 turned on in advance, the CPU 21 clears various registers, flags, etc. according to flowchart 1 shown in FIG.・Wait for key 14 operation. After the start key 14 is turned on, the pattern key 15 is pressed, and then sewing program 1 is stored in the RAM on the work cloth.
23, specify the storage location using the numeric keys 12 and input it to the CPU 21 using the input key 17. Next, set the number of sewing areas A-F of 1 on the work cloth using the dividing key 16. After inputting to the CPU 21 using the number keys 12 and input keys 17, each area A
Key operations are performed to input the number of stitches and data on the amount of creasing in ~F.

This key operation is performed with number key 12 and input key 17.
As shown in FIG. 8, stitch count data Aa-Fa and criss-cross amount data YA-YF for each area A-F are set and stored in a predetermined storage location of the RAM 23. Then, when the sewing data is input to each sewing area A to F and the end key 18 is pressed, the program creation work is completed.

Next, based on the sewing program created above,
The case of sewing will be explained.

First, after turning on the power switch with the reversing switch 19 and mode selection key 13 turned off in advance, the pattern key 15. When sewing program 1 is selected for the work cloth by operating number keys 12 and input key 17, CPU 2
1 reads the selected sewing program data from the RAM 23 and transfers it to the sewing data register of the CPU 21.

Next, when the start switch 2 is turned on, the CPU 21 moves to the sewing routine, and first calculates the value of each sewing completed stitch number data XA-XF from the stitch number data Aa to Fa of each sewing area A to F, respectively, XA=Aa. XB=Aa +Ba XC=Aa +Ba 10a XD=Aa +Ba +Ca +DaXE=Aa
10Ba +Ca 10Da 10EaXF=Aa +Ba
It is determined by the calculation formula 10Ca +Da +Ea +Fa.

When each completed sewing stitch number data XA to XF is determined, CP()
21 executes the sewing operation based on the same data xA to XF and the data YA to YF of the amount of unevenness in each area A to F. First, the CPU 21 outputs a drive signal to the sewing machine motor drive circuit 26 to drive the sewing machine motor 25. Then, the CPU 21 reads out the serration stitching data YA of the sewing area A, and performs the serration stitching corresponding to the data YA in the area A. The pulse motor 8 is driven as shown in FIG.
In order to make this larger than the main feed dog 6, a drive control signal is output to the pulse motor drive circuit 27, and criss-cross stitching is started in which the sewing area A is applied to the workpiece cloth. Also, CPU
21 is a sewing machine motor 25 driven and a stitch number counter 3.
The stitch number count signal from 1 is counted, and this count value is compared with the sewing completion $1 number data XA to determine the completion of criss-cross stitching in the area.

When the number of stitches reaches the sewing completion stitch number data XA, that is, when the sewing in the area is completed, the CPtJ21 reads the data Y8 of the amount of creasing in J'3 in the area B, and stores the same data as shown in FIG. Based on YB, the pulse motor 8 is driven and controlled step by step in accordance with the generation of the above-mentioned buzz 1 to signal in area B based on the sewing completed stitch count data XS and the stitch count signal in the same way as above.
Sewing is completed.

After that, repeat the same operation as above until sewing area F.
After 1 of the uneven stitches are performed on the work cloth, when the CPU 21 outputs a stop control signal to the sewing machine motor drive circuit 26 to stop the sewing machine motor 25, the work cloth is sewn with 1 for 1.
Once the first round of sewing has been completed, the machine prepares for sewing the next workpiece cloth again.

Next, as shown in Fig. 3, the sewing areas A' to F' of 1 and 2 of the symmetrical shape of the work cloth are respectively corresponding to the sewing areas A' to F' in order from area F' to area 8. A case where sewing is performed with the same amount of creasing as sewing areas A to F will be described.

First, after turning on the power switch with the reversing switch 19 turned on and the mode selection key 13 turned off, the pattern keys 1, 5. Number key 12 and input key 1
When sewing program 1 is selected for the work cloth by operating 7, CP (J21 stores the selected sewing program data from RAM 23 in order from sewing area F to sewing area A.
The data is read out and transferred to the sewing data register of the CPU 21.

Next, CPtJ21 interpolates the maximum difference in sizing between adjacent sewing areas of 1 on the work cloth, and applies each -1 of 2 on the work cloth.
Rear 8--F' executes the same crisscross stitching as in each area A to F of 1 on the work cloth based on the sewing program data 1 on the work cloth.

That is, the work cloth 1 and the work cloth 2, which are symmetrical to the work cloth 1, are sewn in the reverse order from the sewing area F' to the sewing area A', so that the work cloth 1 < 1.
When sewing is performed by sequentially reading the sewing program data starting from sewing area F, criss-cross sewing is performed in each of the second areas A' to F' on the work cloth with the criss-crossing amount shown by the broken line in FIG. As a result, the locations where the amount of distortion changes between adjacent areas are different between workpiece cloth 1 and workpiece cloth 2, and each area A' to workpiece cloth 2 is different depending on the difference (difference).
In F', criss-cross stitching that is symmetrical to each area A to F of 1 is not performed on the work cloth.

Therefore, in order to interpolate this, the CPt121 is predetermined and stored in the RAM 2-3 between the areas (in this embodiment, the amount of offset is gradually changed to the next amount of offset between each area). The data Δ[3a to ΔFa] of the number of stitches required to complete the process are read out. Next, C
PU21 generates each stitch number data A' corresponding to each sewing area A' to F' of 2 on the work cloth from the data ΔBa to ΔFa.
a->F'a in order from each stitch number data F'a, F-a=Fa-ΔFa E'a=Ea+ΔFa-ΔEa ()-a=l)a+ΔEa-Δ[)a C- A=Ca+Δ[)a−ΔGa 3−a=Ba+ΔCa−ΔBa A′a=Aa+ΔBa It is determined by the calculation formula.

When each stitch number data F'a to A-a is determined, CPtJ
21 transfers each data F-a-A-a to the sewing data register of the same CPLI 21 along with the fabrication data YF-YA of each area F to A in 1 on the work cloth.

Next, when the start switch 2 is turned on, the CPU 21 moves to the sewing routine, and calculates the values of the completed stitch number data XF- to XA' from the stitch number data F'a to A'a, respectively, and calculates XA-= F'a XR==F-a +E-a XC'=F-a +E-, a +D-aXI)'=F'
a +E'a +r)=a +C-aXE'=F-a
+E-a +D-a 10-a +B'a XF'=F-a +E-a 10-a +C-a 10B
It is determined by the arithmetic expression -a+A-a.

When each completed sewing set number data XF- to XA' is determined, CP
The LJ 21 executes the sewing operation based on the same data X, F-~XA'' and the uneven data YF~YA of each area F~△.First, the CP tJ 21 sends a drive signal to the sewing machine motor drive circuit 26. When the output is output and the sewing machine motor 25 is driven, the erging data Y[ in the sewing area F-1 is read out and the erging sewing corresponding to the same data YF in the same area F'' can be performed.J: Sea urchin pulse motor 8
is driven and controlled to start criss-crossing the work cloth in the second sewing area F-. Further, the CPU 2' 1 counts the number of stitches count signal from the set number counter 31,
This count value is compared with the sewing completed set number data XF-, and the completion of criss-cross stitching in area F' of No. 2 on the workpiece cloth is waited for.

When the count reaches the sewing completed stitch number data XA-, CP LJ
As shown in FIG. 8, the pulse motor 8 is read out in the area E', and based on the same data YE, the pulse motor 8 is activated in stages in accordance with the generation of the count signal in the area F'. At the same time, a comparison operation between the next number of completed stitches data XB- and the number of sets is started. Therefore, if the starting position of the serration stitch in the sewing area E- matches the position where the serration stitch of the sewing area 1 on the workpiece cloth is completely sewn at the serration gate corresponding to the serration distance data YF. With,
The position where the offset stitching in the sewing area F' is completely sewn with the offset stitching corresponding to the offset stitching data YE is performed at the same time as the sewing enters the area F' from the area F-. Then, in this state, the uneven sewing is performed until the number of sets reaches the data of the number of completed stitches XB', and the completion of the uneven stitching in the area [- is waited for.

Thereafter, the same operation as described above is repeated up to the sewing area A', and after the serration sewing is performed on the workpiece cloth in 2, the CPU 21
When the sewing machine motor 25 is stopped, one stitch of sewing 2 on the workpiece cloth is completed.

Therefore, if 2 is to be sewn on a workpiece fabric that has a shape that is symmetrical to 1 and the sewing direction is opposite to 1, and the same sewing is performed on the workpiece fabric at a position that is symmetrical to 1, then the reversing switch 1
Just by turning on 9, the sewing program for 2 on the work cloth will be automatically created based on the sewing program data of 1 on the work cloth, and the symmetrical uneven stitches will be created on the work cloth 2. It can be applied to

Effects As described in detail above, this invention can be used to sew symmetrically shaped workpiece fabrics at symmetrical positions with the same amount of serration. Since a program for uneven stitching of the other workpiece fabric can be automatically created based on the program data for the other workpiece, the program creation time can be shortened, sewing work efficiency can be improved, and even left and right stitching can be achieved. Each of the following zigzag stitches can be applied to the processed fabric.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a processing cloth for the left sleeve to explain this invention, Fig. 2 is a perspective view of a processed fabric for the left sleeve which is also sew-stitched, and Fig. 3 is a processing cloth for petroleum. Figure 4 is a perspective view of a petroleum processing cloth with uneven stitching, Figure 5 is a perspective view of a sewing machine, Figure 6 is an electric block circuit diagram, Figure 7 is a perspective view of the cloth.
Figure ' is a diagram showing the flow to the microcomputer flower 1, and Figure 8 is an explanatory diagram showing changes in the irregularity of each sewing area of the work cloth. Sewing machine 1, CPU 21, RAM 23, 1 for processing cloth, 2 for processing cloth
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Claims (1)

[Scope of Claims] 1. A data creation device for a sewing machine that reads out the serging data stored in a storage device (23) as sewing progresses and performs erging stitching on work cloth (K1, K2). The data creation device is a first machine that creates uneven stitching data for performing uneven stitching on one of the first work cloths (K1) of the left-right symmetrical work cloths (K1, K2). 1 data creation means (21)
And, based on the skewed data created by the first means (21), a second work cloth symmetrical to the first work cloth (K1) is prepared.
a second data creation means (21) for creating serration data for performing serration stitching on the work cloth (K2) that is symmetrical to the serration sewing of the first work cloth (K1); A data creation device for a sewing machine, characterized by: