JPS62120876A - Sewing machine equipped with programming apparatus - 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 (Field of Industrial Application) The present invention relates to a sewing machine equipped with a programming device for creating sewing data.

(Prior Art) Generally, in a sewing machine that sews a predetermined sewing pattern while moving the workpiece cloth back and forth and left and right, a thread trimming device is used to cut the thread at the end of sewing, and a thread cutting device is used to cut the thread at the end of the needle thread after thread trimming. A thread removing device or the like for removing the parts from the work cloth is installed, and these devices are each driven by an electromagnetic solenoid in a predetermined order.

(Problem to be Solved by the Invention) However, since the operating sequences of each of the above devices are stored in a storage device such as a programmable read-only memory (P-ROM) or ROM, it is difficult for the user to know the operating sequences when necessary. In order to change the operation timing accordingly or to incorporate the operation timing of a new device related to the sewing operation into the operation sequence, it is necessary to recreate the storage device, which is inconvenient.

(Object of the invention) This invention was made in view of the above circumstances, and
The object is to provide a sewing machine equipped with a programming device that allows the user to program control data for actuating devices operated in connection with sewing operations as required.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a needle that is moved up and down through a work cloth support surface, and a seam forming needle that forms a seam on the work cloth. a device, a driving means for driving the seam forming device, a holding device for holding the work cloth on the work cloth support surface, and a holding device for moving the holding device back and forth and from side to side to impart feed to the work cloth. processing cloth feeding device;
A programming device capable of creating sewing data consisting of operation data of a workpiece cloth feeding device and driving means control data necessary for sewing a desired U pattern, an actuation device operated in connection with the sewing operation, and the actuation device. an input means capable of inputting control data for controlling the operation of the programming device; a storage means for storing control data from the input means together with the sewing data when the sewing data is created by the programming device; and storage means for storing the control data in the storage means. and control means for controlling the operation of the driving means, the workpiece cloth feeding device, and the actuating device based on the data obtained.

(Function) Therefore, when the sewing data is created by the programming device, if control data for controlling the operation of the actuating device is input from the input means, the control data! l! It is stored in the storage means together with the production data. The control means controls the operation of the drive means, the workpiece cloth feeding device, and the actuating device based on the data in the storage means.

(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 body 4 consisting of a sewing machine arm 2 and a sewing machine bed 3 is installed on the upper surface of a sewing machine table l. The sewing machine arm 2
A needle bar 6 having a needle 5 at its lower end is supported so as to be movable up and down, and is moved up and down as the sewing machine main shaft (not shown) rotates. The needle 5 constitutes a stitch forming device together with a thread loop catcher (not shown) in the sewing machine bed 3, and both are operated in accordance with the rotation of the main shaft of the sewing machine, thereby forming stitches on the workpiece cloth. It is supposed to be done.

A sewing machine motor 7 for rotationally driving the sewing machine main shaft is mounted on the lower surface of the sewing machine table l, and the rotation is transmitted through a well-known rotation transmission mechanism including a driven pulley 8 mounted on the end of the sewing machine main shaft. The power is transmitted to the main shaft of the sewing machine.

As shown in FIGS. 1 and 2, a holding device 11 consisting of a holding frame 9 and a pallet 10 is disposed on the work cloth support surface at the front of the sewing machine head 3, and a holding device 11 consisting of a holding frame 9 and a pallet 10 is disposed between the two. While the workpiece cloth is being held, the holding device 11 is moved back and forth and left and right by a pair of pulse motors 12 and 13 shown in FIG. 2 to feed the workpiece cloth. Note that each pulse motor 12, 13 constitutes a workpiece cloth feeding device.

Further, the holding frame 9 is moved up and down based on the operation of the electromagnetic solenoid 14 for operating the holding frame shown in FIG. It can be set between 10 and 10.

As shown in FIG. 2, a pair of left and right auxiliary pressers 30 as actuating devices are detachably and rotatably attached to the upper surface of the holding frame 9 with screws 31, and each auxiliary presser 30 is indicated by a solid line in the figure. When the fabric Wa and the piece of cloth wb are set between the holding frame 9 and the pallet 10 in the state shown in the first position shown in FIG. Ru. Furthermore, when sewing is performed along the planned sewing line shown by the two-dot chain line in FIG. 2, each auxiliary presser foot 30 is connected to a solenoid valve 32 shown in FIG. Based on the operation of a cylinder (not shown), it is rotated between a first position shown by a solid line in FIG. 2 and a second position shown by a two-dot chain line in the same figure.

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

A programming device 21B is provided on the upper surface of the right side of the sewing machine table l for creating sewing data consisting of operation data for each pulse motor 12, 13 and drive data for the sewing machine motor 7 necessary for sewing a desired sewing pattern. ing. The programming device 18 is provided with a key 33 that constitutes an input means for inputting control data for controlling the operation of the auxiliary presser solenoid valve 32. By pressing this key 33, a signal is input to operate the solenoid valve 32 to place each auxiliary presser foot 30 in one position, and by operating it again, the operation of the solenoid valve 32 is stopped. A signal for placing each auxiliary presser foot 30 at the other position is input.

In addition, control box 1 is located at the lower right side of sewing machine table 1.
9 is mounted, and an IC card mounting section 20 is provided on the front surface thereof. A thin plate-shaped IC card 21 that stores the sewing data and control data in a readable and writable manner is detachably attached to the card attachment section 20. This IC card has an integrated circuit (RC) embedded in a plastic card.
As the IC card 2 in this embodiment, rMELcARDJ (trade name) manufactured by Mitsubishi Electric Corporation is used.

The sewing machine arm 2 is also equipped with a needle position detector 30 for detecting the vertical position of the needle 5. A signal is output, and a needle down signal is output when the needle passes through the work cloth and is located below the work cloth support surface.

In this embodiment, as shown in FIG. 2, a central processing unit (CPU) 22 as an ilJ control means is built in the control box 19, and the CPU 22 has a read-only memory (ROM) 23. It is connected. This ROM 23 stores a program for controlling the operation of the entire sewing machine. The IC card 21 was installed in the IC card mounting section 20 in order to hold the recording paper on which the sewing pattern was recorded in advance in the holding device 11 and move the holding device 11 so that the sewing pattern was aligned with the needle drop position. In this state, when a predetermined key of the programming device 18 is operated, 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
operates the pulse motors 12 and 13 via the pulse motor drive circuits 25 and 26 to move the holding device 11, and drives the sewing machine motor 7 via the sewing machine motor drive circuit 27 to move the needle 6 up and down. Have the child perform movements, etc. It also controls the operation of the solenoid valve 32 and operates the auxiliary presser foot 30 via an air cylinder (not shown).

Based on this programming operation, the CPU 22 outputs the sewing data consisting of the operation data of each pulse motor 12 and 13 and the control data of the sewing machine motor 7, and the solenoid valve 32.
The IC card 21 is combined with the control data for each stitch.
write to. The data for one stitch consists of 2 bytes as shown in Figure 4, and within this data, 2 bits are used for sewing machine motor control data (sewing machine information such as stop, low speed operation, high speed operation, pattern end, etc.). 12 bits are assigned to the operating data of each pulse motor 12,13. Two bits of the 12 bits of operation data are the rotation direction of each pulse motor 12, 13, that is, the feed direction data of the holding device 11, and the lO bit is the drive pulse number data of each pulse motor 12, 13. . Further, the data storage area for the actuating device is composed of two bits, one bit of which is used for control data for the solenoid valve 32.

When sewing is to be performed based on the sewing data and control data created by the programming operation described above, first, the on/off switch 15 is operated to turn on the power to the sewing machine. In addition, the IC card 2 is inserted into the tC card mounting section 20.
1 and electrically connect it to the CPU 22. Then,
When the activation switch 16 is operated, the CPU 22 activates the electromagnetic solenoid 14 via the interface 24 and the solenoid drive circuit 28, and the holding frame 11 is raised by the electromagnetic solenoid 14.

In this state, the fabric W is placed between the holding frame 11 and the pallet 10.
a. After setting the cloth wb, if the start switch 17 is operated in step S1 shown in FIG.
It is input to U22. In response, the CPU 22 initializes the data address of the IC card 21 in step S2, and transfers the first stitch sewing data to the IC card 21 in step S3.
Read from card 21.

Next, in steps 84 to S6, it is determined what the sewing machine information in the sewing data is, and if the sewing machine information is, for example, "low speed operation", step 84
The determination result in step S5 becomes NO, and the determination result in step S6 becomes YES, and the CPU 22 outputs a low-speed operation command signal to the sewing machine motor 7 via 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. Further, if all the determination results from step 34 to step S6 are NO, the process advances to step S9, and the CPU
22 outputs a high-speed operation command signal to the sewing machine motor via a sewing machine motor drive circuit 27. As a result, the sewing machine motor 7 is rotated at high speed in step SIO.

When the sewing machine is operated based on the rotation of the sewing machine motor 7 and a needle up signal is input from the needle position detector 34, the determination result in step 311 in FIG.
F and S, and the CPU 22 outputs the operation data of the work cloth feeding device from among the sewing data of the first stitch in step S12. Furthermore, control data for the solenoid valve 32 is output in step S13. In response to each data, each pulse motor 12, 13 is rotationally driven to feed the fabric Wa and the piece of cloth wb, and the solenoid valve 32 is actuated to control the auxiliary presser foot 30 as shown in FIG. It is placed either at the solid line position or at the two-dot chain line position.

Thereafter, the data address is updated in step S14, and then the process returns to step S3, where the next sewing data is read. Then, the sewing machine information in the sewing data is "stopped".
If so, the determination result in step S4 becomes NO, and the result in step S5 becomes YES, and the CPU
22 waits for input of a needle up signal in the next step S15. When the needle up signal is input, the process advances to step S16, and the CPU
22 outputs a stop signal. In response, the sewing machine motor drive circuit 27 stops the sewing machine motor 7 in step S17. In this state, the CPU 22 executes the processes from step 812 to step 314 described above.

In this way, sewing progresses based on the sewing data and the control data of the actuating device, and the sewing machine information in the sewing data is
When the data "End" is read, the determination result in step S4 becomes YES. Then, the CPU 22 waits for the input of the needle down signal in step S18, and after inputting the signal,
In step S19, the electromagnetic solenoid 3 for the thread trimming device
5 to operate a thread cutting device (not shown).

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

As described above, in this embodiment, when sewing data is input by operating the programming device 18, control data for the solenoid valve 32 can be simultaneously input and stored, and sewing can be reliably performed based on the data. I can do it.

Note that the present invention is not limited to the above-mentioned embodiments, and can be embodied in the following embodiments, for example.

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

(bl As shown in Fig. 8, a 2-bit storage area is provided in the 2-byte sewing data to identify whether the actuating device has stopped operating, and 1-byte control data corresponding to 8 types of actuating devices is provided.) A storage area is provided. In this case, the storage area is configured as 3 bytes only when the operation stop state of each actuating device is switched, and the storage area is configured as 2 bytes at other times.

(The CIIC card 21 is provided with a dedicated data storage area of 3 bytes for each actuator.

(d) As the operating device, various devices necessary for sewing are employed, such as a feeding device that automatically feeds the rolled tape to the holding device 11 after cutting it into a predetermined length.

(el) A floppy disk is used as a storage means, and a floppy disk drive is provided to drive it.

(Effects of the Invention) As described in detail above, the present invention provides an excellent effect in that the user can program control data for the actuating device operated in connection with the sewing operation as necessary.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a sewing machine embodying this 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. 7 and 8 are views corresponding 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, 12.13 is a pulse motor constituting a processing cloth feeding device, 18 is a programming device, and 21
22 is a CPU as a control means, 32 is a solenoid valve as an operating device, 33 is a key as an input means, Wa is a cloth, and wb is a piece of cloth. Patent applicant Brother Industries, Ltd. Agent
Patent Attorney On 1) Hiroyoshi Figure 1 Figure 2 Figure Wa Created by Higashi 1 Bi Figure 8 @ For LL

Claims (1)

[Scope of Claims] 1. A seam forming device for forming a seam on a work cloth, including a needle (5) that is moved up and down through a work cloth support surface, and a seam forming device for driving the seam forming device. A driving means (7), a holding device (11) that holds the work cloth (Wa, Wb) on the work cloth support surface, and a holding device (11) that moves back and forth and left and right to hold the work cloth (
A work cloth feeding device (12,
13), a programming device (18) capable of creating sewing data consisting of operation data of a workpiece cloth feeding device and drive means control data necessary for sewing a desired sewing pattern; and operations activated in connection with the sewing operation. a device (32); an input means (33) capable of inputting control data for controlling the operation of the actuating device (32); ) storage means (21) for storing control data from the sewing machine along with the sewing data; and based on the data stored in the storage means (21), the driving means (7), the work cloth feeding device (12, 13) and A sewing machine equipped with a programming device, characterized in that it comprises control means (22) for controlling the operation of an actuation device (32).