JPH0659351B2 - Sewing machine with programming device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sewing machine provided with a programming device for creating sewing data.

(Prior Art) Generally, in a sewing machine that sewes a predetermined sewing pattern while moving a work cloth back and forth and left and right, a thread trimming device for thread trimming at the end of sewing and an end of a needle thread after thread trimming are performed. A device for removing thread from the work cloth is attached, and these devices are each driven by an electromagnetic solenoid in a predetermined order.

(Problems to be Solved by the Invention) However, when a new auxiliary actuating device related to the sewing operation is provided in addition to the operation of the thread trimming device or the thread scatter device at the end of sewing, for example, a pair of left and right An auxiliary actuating device is installed to prevent the auxiliary presser foot from colliding with the needle when sewing is performed, or after the tape wound into a roll is cut to a specified length, the work cloth holding device automatically When the auxiliary actuating devices to be supplied are additionally provided, the control data for actuating those auxiliary actuating devices at appropriate timing cannot be incorporated in the series of programs. For this reason, in a sewing machine provided with these auxiliary actuating devices, it is necessary to suspend each sewing operation at an appropriate timing and then manually operate each auxiliary actuating device. Therefore, a series of sewing operations cannot be automatically and continuously executed, which is extremely inconvenient.

(Object of the Invention) The present invention has been made in view of the above circumstances,
The purpose is to provide the control data for the auxiliary actuating device, which needs to be additionally operated in connection with the sewing operation, separately from the thread trimming device, which is operated at the end of sewing, when necessary. The purpose of the present invention is to provide a sewing machine having a programming device that can be programmed by using a sewing machine.

(Means for Solving the Problems) In order to achieve the above-mentioned object, in the present invention, a stitch formation for forming a stitch on a work cloth is provided that includes a needle that is vertically moved through a work cloth support surface. Device, driving means for driving the stitch forming device, holding device for holding the work cloth on the work cloth support surface, and moving the holding device forward, backward, leftward and rightward to feed the work cloth. A work cloth feeding device,
A programming device capable of creating sewing data consisting of operation data of the work cloth feed device and drive means control data necessary for sewing a desired sewing pattern, and a thread cutting operation executed at the end of sewing, based on the sewing data. An auxiliary actuating device that needs to be newly additionally operated in connection with a sewing operation, an input means capable of inputting control data for appropriately operating the auxiliary operating device, and a sewing data created by the programming device. In the storage means for storing the control data from the input means together with the sewing data, and controlling the driving means and the work cloth feeding device based on the sewing data stored in the storage means, Control means for controlling the auxiliary actuating device based on the above.

(Operation) Therefore, when the control device for appropriately operating the auxiliary operation device provided in connection with the sewing operation is input from the input means when the sewing data is created by the programming device, the control data is input together with the sewing data. It is stored in the storage means. The control means controls the drive means and the work cloth feeding device based on the sewing data stored in the storage means, and controls the auxiliary actuating device based on the control data.

(Embodiment) An embodiment of a sewing machine embodying the present invention will be described below with reference to the drawings. As shown in FIG. 1, a sewing machine main body 4 including a sewing machine arm 2 and a sewing machine bed 3 is provided on the upper surface of the sewing machine table 1. The sewing machine arm 2
A needle bar 6 having a needle 5 at its lower end is supported in a vertically movable manner, and is vertically moved in accordance with the rotation of a sewing machine main shaft (not shown). The needle 5 constitutes a stitch forming device together with a thread catcher (not shown) in the sewing machine bed 3, and both are operated in accordance with the rotation of the sewing machine main shaft to form a stitch on the work cloth. It is supposed to be done.

A sewing machine motor 7 for rotationally driving the sewing machine spindle is mounted on the lower surface of the sewing machine table 1, and the rotation of the sewing machine table 1 is performed through a known rotation transmission mechanism including a driven pulley 8 mounted on an end of the sewing machine spindle. It is designed to be transmitted to the main shaft of the sewing machine.

As shown in FIGS. 1 and 2, a holding device 11 composed of a holding frame 9 and a pallet 10 is arranged on the work cloth supporting surface at the front part of the sewing machine bed 3, and processing is performed between the both 9 and 10. While the cloth is being held, the holding device 11 is moved back and forth and left and right by the pair of pulse motors 12 and 13 shown in FIG. 3 to feed the work cloth. The pulse motors 12 and 13 form a work cloth feeding device. Further, the holding frame 9 is moved up and down based on the operation of the holding frame electromagnetic solenoid 14 shown in FIG. 3, and with the holding frame 9 in the raised position, the work cloth is held by the holding frame 9 and the pallet 10. It can be set between and.

As shown in FIG. 2, a pair of left and right auxiliary pressers 30 are detachably and rotatably mounted on the upper surface of the holding frame 9 with screws 31, and each auxiliary presser 30 is shown at a first position shown by a solid line in FIG. When the cloth Wa and the cloth piece Wb, which are work cloths, are set between the holding frame 9 and the pallet 10 in the state where
The central portion of the cloth piece Wb is woven by the auxiliary presser 30.
Pressed by a. Further, each auxiliary presser foot 30 serves as an auxiliary actuating device shown in FIG. 3 in order to avoid collision with the needle 5 when sewing is performed along the sewing planned line shown by the two-dot chain line in FIG. Based on the operation of the auxiliary pressurizing solenoid valve (hereinafter, simply referred to as solenoid valve) 32 and the air cylinder (not shown), the first position shown by a solid line in FIG. 2 and the second position shown by a two-dot chain line in FIG. It is designed to be rotated between.

As shown in FIG. 1, an on / off switch 15 for turning on the power of the sewing machine is provided on the lower surface of the front portion of the sewing machine table 1, and the electromagnetic solenoid 14 for operating the holding frame is provided below the sewing machine table 1. An operation switch 16 that is operated by stepping to activate the sewing machine and a start switch 17 that is operated by stepping to activate the sewing machine are provided.

A programming device 18 is provided on the upper surface of the right side of the sewing machine table 1 for creating sewing data consisting of operation data of the pulse motors 12 and 13 and drive data of the sewing machine motor 7 necessary for sewing a desired sewing pattern. ing. The programming device 18 is provided with a key 33 which constitutes an input means capable of inputting control data for controlling the operation of the auxiliary pressurizing solenoid valve 32. Then, by pressing this key 33, the solenoid valve 32 is operated to operate each auxiliary presser 30.
Is input to one position, and the signal to stop the operation of the solenoid valve 32 and position each auxiliary presser 30 to the other position is input by operating again.

In addition, a control box 1 is provided on the lower right side of the sewing machine table 1.
9 is mounted, and an IC card mounting portion 20 is provided on the front surface thereof. A thin plate-shaped IC card 21 for reading and writing the sewing data and the control data is removably mounted on the IC card mounting portion 20. This IC card has a structure in which an IC (integrated circuit) is embedded in a plastic card,
As the IC card 21 in this embodiment, "MELCARD" (trade name) manufactured by Mitsubishi Electric Corporation is used.

Further, the sewing machine arm 2 is internally provided with a needle position detector 34 for detecting the vertical position of the needle 5, and when the needle 5 comes out of the work cloth and is positioned on the work cloth supporting surface, a needle up signal is sent. The needle-down signal is output when it passes through the work cloth and is positioned below the work cloth support surface.

In this embodiment, as shown in FIG. 3, a central processing unit (CPU) 22 as control means is built in the control box 19, and a read only memory (ROM) 23 is connected to the CPU 22. Has been done. A program for controlling the operation of the entire sewing machine is stored in the ROM 23. The recording paper in which the sewing pattern is stored in advance is held in the holding device 11, and the IC card 21 is mounted in the IC card mounting portion 20 in order to move the holding device 11 so that the sewing pattern follows the needle drop position. When a predetermined key of the programming device 18 is operated in this state, a predetermined signal is input from the programming device 18 to the CPU 22 via the interface 24. In response to the input signal, the CPU 22 actuates the pulse motors 12 and 13 via the pulse motor drive circuits 25 and 26 to move the holding device 11 and the sewing machine motor via the sewing machine motor drive circuit 27. 7 is driven to move the needle 5 upward, downward or stop. In addition, the operation of the solenoid valve 32 is controlled to operate the auxiliary presser foot 30 via an air cylinder (not shown).

Based on this programming operation, the CPU 22 causes the sewing data including the operation data of the pulse motors 12 and 13 and the control data of the sewing machine motor 7 and the solenoid valve 32.
The IC card 21 is paired with the control data of
Write in. The data for one stitch is composed of 2 bytes as shown in FIG. 4, and 2 bits are included in the control data of the sewing machine motor (sewing machine information such as stop, low speed operation, high speed operation, pattern end). 12 bits are assigned to the operation data of each pulse motor 12, 13. Of the 12-bit operation data, 2 bits are rotation direction data of the pulse motors 12 and 13, that is, feed direction data of the holding device 11, and 10 bits are drive pulse number data of the pulse motors 12 and 13. Further, the data storage area for the auxiliary actuator is composed of 2 bits, 1 bit of which is the solenoid valve 32.
It is applied to the control data of.

When performing sewing based on the sewing data and the control data created by the programming operation, the on / off switch 15 is first operated to turn on the power of the sewing machine. Further, the IC card 21 is mounted on the IC card mounting portion 20 and electrically connected to the CPU 22. Next, when the operation switch 16 is operated, the CPU 22 operates the electromagnetic solenoid 14 via the interface 24 and the solenoid drive circuit 28, and the electromagnetic solenoid 1
The holding frame 9 is raised by 4.

In this state, the cloth Wa, between the holding frame 9 and the pallet 10
After the cloth piece Wb is set, if the start switch 17 is operated in step S1 shown in FIG.
Entered in. In response to this, the CPU 22 carries out step S
Initially set the data address of the IC card 21 with 2,
In step S3, the sewing data for the first stitch is read from the IC card 21.

Next, in steps S4 to S6, it is determined what the sewing machine information in the sewing data is, and if the sewing machine information is "low speed operation", step S4 is performed.
And the determination result of step S5 becomes NO and the determination result of step S6 becomes YES, and the CPU 22 outputs a low speed operation command signal to the sewing machine motor 7 through the sewing machine motor drive circuit 27 in the next step S7. As a result, the sewing machine motor 7 is rotated at a low speed in step S8. If the determination results of steps S4 to S6 are all NO, the process proceeds to step S9 and the CPU
22 outputs a high-speed operation command signal to the sewing machine motor 7 via the sewing machine motor drive circuit 27. As a result, the sewing machine motor 7 is rotated at high speed in step S10.

When the sewing machine is operated based on the rotation of the sewing machine motor 7 to input the needle up signal from the needle position detector 34, the determination result of step S11 in FIG. 6 is Y.
In step S12, the CPU 22 outputs the operation data of the work cloth feed device from the sewing data of the first stitch in step S12. Also, in step S13, the solenoid valve 3
The control data of 2 is output. Then, in response to the respective data, the pulse motors 12 and 13 are rotationally driven to feed the cloth Wa and the cloth Wb, and the solenoid valve 32 is operated and controlled so that the auxiliary presser foot 30 is moved to the second position.
It is arranged at either the solid line position or the two-dot chain line position in the figure.

After that, the data address is updated in step S14, and then the process returns to step S3 to read the next sewing data. Then, the sewing machine information in the sewing data is "stop".
If the determination result is NO, the determination result of step S4 is NO and the result of step S5 is YES.
22 waits for the input of the needle up signal in the next step S15. When the needle up signal is input, the process proceeds to step S16, and the CPU
22 outputs a stop signal. In response to this, the sewing machine motor drive circuit 27 stops the sewing machine motor 7 in step S17. In that state, the CPU 22 executes the above-described processing of steps S12 to S14.

In this way, the sewing based on the sewing data and the control data of the auxiliary operating device progresses, and when the "end" data is read from the sewing machine information in the sewing data, the step S
The determination result of 4 is YES. Then, the CPU 22 waits for the input of the needle down signal in step S18, and after inputting the signal, drives the electromagnetic solenoid 35 for the thread cutting device in step S19 to operate the thread cutting device (not shown).

Thereafter, the CPU 22 waits for the input of the needle up signal in step S20, outputs the stop signal to the sewing machine motor drive circuit 27 after the input of the signal, and in step S22, the sewing machine motor 7
To stop.

As described above, in this embodiment, when the sewing data is input by operating the programming device 18, the control data of the solenoid valve 32 can be input and stored at the same time, and the sewing based on the data can be reliably performed. You can

The present invention is not limited to the above-mentioned embodiment, but can be embodied in the following modes, for example.

(a) As shown in FIG. 7, the sewing data and the control data for the auxiliary actuating device are composed of 3 bytes, and 1 byte of the data is used for the control data for the auxiliary operating device.

(b) As shown in FIG. 8, a sewing data composed of 2 bytes is provided with a 2-bit storage area for identifying the operation stop of the auxiliary operating device, and 1 byte corresponding to 8 kinds of auxiliary operating devices. Control data storage area is provided. In this case, only when the operation stop state of each auxiliary actuating device is switched, the 3-byte structure is formed, and otherwise, the 2-byte structure is formed.

(c) The IC card 21 is provided with a dedicated data storage area of 3 bytes for each auxiliary actuator.

(d) As an auxiliary actuating device, various devices necessary for sewing such as a feeding device that automatically feeds the holding device 11 after cutting the tape wound into a roll into a predetermined length are adopted.

(e) A floppy disk is used as the storage means, and a floppy disk drive device for driving it is provided.

(Effects of the Invention) As described in detail above, the present invention is an auxiliary actuating device that needs to be additionally actuated in connection with a sewing operation, in addition to a thread trimming device that is actuated at the end of sewing. This has an excellent effect that the user can program the control data of (1) as needed.

[Brief description of drawings]

FIG. 1 is a perspective view of a sewing machine embodying the present invention, FIG. 2 is a plan view showing a holding device, FIG. 3 is a block diagram showing the electrical configuration of the sewing machine, and FIG. 4 is sewing data for one stitch. 5 and 6 are flowcharts showing the operation data and the operation data. 7 and 8 are equivalent to FIG. 4 in another example. In the figure, 5 is a needle, 7 is a sewing machine motor as a driving means, 11 is a holding device, 12 and 13 are pulse motors constituting a work cloth feeding device, 18 is a programming device, 21.
Is an IC card as storage means, 22 is a CPU as control means, 32 is a solenoid valve for auxiliary pressing as an auxiliary actuating device, 33 is a key as input means, Wa is cloth, and Wb is cloth piece.

Continuation of the front page (56) Reference JP-A 52-62553 (JP, A) JP-A 53-128447 (JP, A) JP-A 62-129090 (JP, A) JP-A 62-120876 (JP , A) JP 62-87188 (JP, A) JP 53-15958 (JP, A) JP 56-106680 (JP, A) JP 60-52836 (JP, B2) JP 60-13713 (JP, B2) JP 58-49277 (JP, B2) JP 58-30074 (JP, B2) JP 59-5316 (JP, B2)

Claims (1)

[Claims] 1. A seam forming device for forming a seam on a work cloth, comprising a needle (5) which is moved up and down through a work cloth supporting surface, and a drive means for driving the seam forming device. (7), a holding device (11) for holding the work cloth (Wa, Wb) on the work cloth supporting surface, and moving the holding device (11) back and forth and left and right to form the work cloth (Wa, Wb). Work cloth feeding device (1
2 and 13), a programming device (18) capable of creating sewing data composed of operation data of the work cloth feed device and drive means control data necessary for sewing a desired sewing pattern, and thread trimming executed at the end of sewing. Auxiliary actuating device (32) that needs to be additionally operated in association with the sewing operation based on the sewing data and control data for appropriately operating the auxiliary operating device (32) are input separately from the operation. Possible input means (33) and storage means (21) for storing the control data from the input means (33) together with the sewing data when the sewing data is created by the programming device (18).
And the drive means (7) and the work cloth feed device (12, 12) based on the sewing data stored in the storage means (21).
Control means (22) for controlling the auxiliary actuating device (32) on the basis of the control data as well as for controlling 13).
A sewing machine equipped with a programming device characterized by having and.