JP2773282B2 - sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention sequentially reads out a plurality of pattern data stored in advance in a storage unit in a sewing order, and relatively moves a work cloth holding unit and a needle based on the pattern data. The present invention relates to a sewing machine that sequentially forms a pattern on a work cloth with a large number of stitches formed by moving a needle up and down while moving the needle.

2. Description of the Related Art Conventionally, in a sewing machine of this type, a plurality of pattern data stored in a sewing order are sequentially read from a storage unit, and a plurality of stitch patterns are formed in accordance with the pattern data. Unless an abnormal situation such as thread breakage or needle breakage occurs during the sewing operation, the sewing is continuously performed until the reading of the pattern data is completed.

[Problems to be Solved by the Invention] Therefore, for example, three stitch patterns “ab” shown in FIG.
When forming "c", the pattern "a" or the patterns "a" and "b"
After the sewing is interrupted at the stage where the fabric W is formed on the work cloth holding means, another cloth piece P is set on the fabric W, and the remaining patterns "b" and "c" are set on the cloth piece P. Or sewing work such as forming only "c" cannot be performed,
There was a problem that it was not possible to respond to a wide range of demands of workers.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to interrupt sewing at a stage where sewing is performed up to a specific pattern when sewing a plurality of patterns in a predetermined sewing order. It is an object of the present invention to provide a sewing machine capable of reliably restarting sewing in accordance with the next pattern data of the specific pattern after the interruption.

Means for Solving the Problems In order to achieve the above object, according to the present invention, the sewing operation is interrupted between any two consecutive pattern data among a plurality of pattern data stored in the storage means. Input means for pre-storing instructing interruption command data prior to sewing;
Based on the input of the sewing start signal, the data is sequentially read from the storage means to control the operation of the sewing machine, and the first operation of interrupting the operation of the sewing machine in response to the interruption command data stored in the storage means in advance Control means, restart command signal generating means for generating a restart command signal for restarting the sewing machine operation after the sewing machine operation is interrupted, and restarting the sewing machine operation based on the pattern data in response to the restart command signal And second control means.

[Operation] The input unit stores interruption command data for instructing interruption of the sewing operation between any two consecutive pattern data among the plurality of pattern data stored in the storage unit in the sewing order. The first control means controls the operation of the sewing machine by sequentially reading the data from the storage means, and interrupts the operation of the sewing machine in response to the interruption command data. The restart command signal generating means generates a restart command signal for restarting the sewing machine operation after the sewing machine operation is interrupted, and the second control means restarts the sewing machine operation based on the pattern data in response to the restart command signal.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 2, a sewing machine main body 3 equipped with a sewing machine motor 2 is mounted on a table 1 of the sewing machine, and a needle 4 supported up and down by an arm 3a and a needle 4 provided in a bed 3b. A stitch forming device 5 for forming a stitch is formed by the thread catcher (not shown). A cloth holding frame 6 movable in the X direction and the Y direction is provided on the table 1, and a cloth W as a work cloth is arranged on the cloth holding frame 6 and a cloth holding frame 7 is fitted thereto. The cloth W is stretched and held at a position corresponding to the needle 4. Then, both frames 6 and 7 constituting the work cloth holding means are relatively moved in the X direction and the Y direction with respect to the needle 4 by the operation of the work cloth feeder 8 including an X direction and Y direction drive motor (not shown). Thereby, a stitch pattern such as a character or a figure is formed on the cloth W.

A keyboard 11 constituting input means and restart command signal generating means is disposed on the table 1. On the upper surface thereof, a selection key for selecting pattern data corresponding to various stitch patterns, and sewing operations are started. A large number of keys such as a sewing start key for restarting after interruption are arranged. or,
On the table 1, a display device 12 for displaying a selected stitch pattern or the like is provided.

As shown in FIG. 1, a central processing unit (CPU) 13 constituting the first and second control means has a program memory 14 composed of a ROM storing a program for controlling the operation of the entire sewing machine.
And a working memory 1 consisting of a RAM for storing pattern data, etc.
5 and have. The external storage device 16 composed of a magnetic disk drive stores a large number of position data indicating the relative positions of the needles and the work cloth holding means 6, 7 for forming stitch patterns such as various characters and figures. It is stored for each eye pattern and connected to the CPU 13 via the input / output interface 17.

A keyboard 11 is connected to the CPU 13 via an input / output interface 17.When a stitch pattern is selected by a key operation on the keyboard 11, the CPU 13 transfers the pattern data of the stitch pattern from the external storage device 16. It is read out and stored in the working memory 15 according to the selection order, that is, the sewing order. Further, when the interruption command data is input in the state where the interruption mode is set by the key operation, the CPU 13 stores the data in the working memory 15 between any two continuous pattern data. Further, the CPU 13 operates the stitch forming device 5, the work cloth feeding device 8, and the display
Control 12 operations.

Now, using the sewing machine configured as described above, for example, as shown in FIG. 5, the unit stitch patterns “a”, “b”, and “c” are combined, and sewing “abc” is performed. The case where an eye pattern is formed will be described. In step S1 of the flowchart shown in FIGS. 3A and 3B (hereinafter simply referred to as S1 and other steps are the same), "a", "b", "c" ”, The CPU 13 stores those pattern data in the external storage device 1.
6 and read them from the working memory 15 according to the selection order.
(S2). Further, the CPU 13 causes the display device 12 to display the cursor C in accordance with the selection order of the stitch pattern, and lights the cursor C below the stitch pattern “a” selected first,
And display a reminder to set the suspend mode (S
3).

Therefore, when the suspend command key on the keyboard 11 is operated in S4, the CPU 13 sets the suspend mode. Continue with CPU
13 waits for operation of the cursor movement key, and at the time of operation, moves the cursor C for each pattern below the stitch pattern group displayed on the display device 12 (S5, S6).

Next, in S7, the CPU 13 waits for input of interruption instruction data for instructing interruption of sewing between any two consecutive pattern data, and as shown in FIG. When the interruption command data is input by a key operation in a state where the stitch pattern “a” is instructed, the CPU 13 determines that the data is located between the pattern data of the continuous stitch patterns “a” and “b”. Then, it is stored in the working memory 15 (S8). At the same time, the CPU 13 displays a symbol M indicating the sewing interruption position between "a" and "b" on the display device 12 as shown in FIG. 4 (b) (S9).

Next, the CPU 13 determines whether or not the interruption mode has been released by a predetermined key operation in S10, and if released, returns to the previous step S3 and repeats the processing from S3 to S9. . On the other hand, if not released, the CPU 13 waits for the input of the sewing start key in S11. When a sewing start signal is input by operating the sewing start key, the CPU 13 sequentially reads out the pattern data and the interruption command data from the working memory 15 in the sewing order (S12). Then, the CPU 13 drives the sewing machine in accordance with the read first pattern data, and forms a stitch pattern “a” on the cloth W as shown in FIG. 5 (S13).

When the sewing of the stitch pattern "a" is completed and the interruption command data is read, the CPU 13 temporarily stops the operation of the sewing machine and interrupts the sewing operation based on the determination in S14 (S1).
Five). Then, after the cloth piece P is set close to the stitch pattern "a" as shown in FIG. 5, when the sewing start key is operated in S16, a restart command signal is generated from the keyboard 11, The signal is input to the CPU 13. In response, the CPU 13 returns the program to S12, and restarts the operation of the sewing machine according to the next pattern data. And CPU13
Repeats the processing from S12 to S17, and the stitch pattern “bc” corresponding to the remaining pattern data stored in the working memory 15
Is formed on the cloth piece P to complete the sewing.

As described above, in this embodiment, a plurality of patterns “a”,
When sewing “b” and “c” according to a predetermined sewing order, the sewing can be interrupted at the stage where the sewing is performed up to the specific pattern “a”, and after the interruption, the specific pattern “a” is interrupted.
Sewing can be reliably restarted according to the next pattern data. Therefore, another piece of cloth P is set on the cloth W during sewing, and a seam pattern “bc” related to the seam pattern “a” previously formed on the cloth piece P is formed. It is possible to flexibly respond to a worker's request.

The present invention is not limited to the above-described embodiment. For example, a plurality of interruption instruction data may be stored between a plurality of pattern data stored in the working memory 15.

[Effects of the Invention] As described in detail above, the present invention can suspend sewing when a plurality of patterns are sewn according to a predetermined sewing order, at the stage when sewing is performed up to a specific pattern.
After the interruption, the sewing can be reliably restarted according to the pattern data next to the specific pattern, so that it is possible to flexibly respond to a wide range of demands of the operator. In addition, the above-mentioned sewing interruption is set in advance prior to sewing, and is automatically interrupted during sewing, so that there is no need for an operator to perform an interruption operation during sewing while watching the timing of interruption. An excellent effect that sewing can be reliably stopped at a desired position is exhibited.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a control device of a sewing machine embodying the present invention, FIG. 2 is a perspective view showing an appearance of the sewing machine, and FIG.
FIGS. 4A to 4C are flowcharts, and FIGS.
(B) is an explanatory view showing a display state of the display device, and FIG. 5 is an explanatory view showing a sewing state. 4 ... needle, 6 ... cloth holding frame, 7 ... cloth holding frame (work cloth holding means is constituted by 6, 7), 11 ... keyboard as input means and restart command signal generating means, 13 …
... CPU as first and second control means, 15 working memory as storage means.

Claims (1)

(57) [Claims] A plurality of pattern data stored in advance in a storage means in a sewing order are sequentially read out, and the needle is moved up and down while relatively moving the work cloth holding means and the needle based on the pattern data. In a sewing machine for sequentially forming a pattern on a work cloth with a large number of stitches, interruption command data for instructing interruption of a sewing operation between any two continuous pattern data among a plurality of pattern data stored in the storage means. Input means for storing in advance prior to sewing, based on an input of a sewing start signal, sequentially reading the data from the storage means to control the operation of the sewing machine, and providing the interrupt command data stored in advance in the storage means First control means for interrupting the operation of the sewing machine in response to the operation, and a restart for generating a restart command signal for restarting the operation of the sewing machine after the interruption of the operation of the sewing machine. A decree signal generating means, responsive to said resume command signal, the sewing machine, characterized in that a second control means resumes the operation of the sewing machine based on the pattern data.