JPS5854836B2 - Sewing machine embroidery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an embroidery sewing device that is used in conjunction with a sewing machine to automatically perform embroidery sewing.

Conventionally, this embroidery sewing device includes an X-axis drive system that reciprocates the embroidery frame in a certain axial direction The Y-axis drive system reciprocates in direction Y, and external (for example, card reader, magnetic tape playback device) or internal (Read-only memory: ROM or random access memory: RA)
M) reads the embroidery sewing data and connects the X-axis drive system and Y
A central control unit is provided which controls the position of the embroidery frame by applying it to the shaft drive system.

Recently, the central control unit is a central processing unit (CPU) or microprocessor, which occupies the main part of a microcomputer, and the sewing control data for various embroidery patterns is stored in advance in a ROM. An embroidery sewing device has been proposed which specifies a group using an input switch and thereafter sequentially reads sewing control data from a ROM in synchronization with the sewing operation of the sewing machine to automatically perform embroidery sewing.

In such an embroidery sewing machine, when a specific embroidery pattern is specified by operating an input switch, the sewing machine's sewing operation σ
The specified pattern will be embroidered automatically in synchronization.

However, since the number of embroidery patterns stored in the ROM is limited, it is desirable to be able to automatically embroider a user's original design, personal mark, or other existing pattern.

A first object of the present invention is to provide an embroidery device that can automatically embroidery patterns other than those previously written in a storage device by the manufacturer.

A second object of the present invention is to provide an embroidery sewing machine that can relatively easily set automatic embroidery of a pattern drawn by a user.

A third object of the present invention is to provide an embroidery sewing device that allows easy inputting of embroidery sewing data.

FIG. 1 shows a mechanical section of an embodiment of the present invention, and FIG. 2 shows a sectional view taken along the line ■--■.

In this embodiment, an embroidery frame 4 is placed on a table 5a mounted to surround the bed 1 of the sewing machine, passes through an opening 3 following the exposure of the bed 1, and surrounds the position of the needle 2 on the top surface of the bed 1. A drive plate 6 is provided to support the.

The drive plate 6 is bent into a crank-shaped cross-sectional shape at the portion passing through the opening 3, and the embroidery frame 4 is fixed or attached to the upper end of the drive plate 6 by means not shown, and the upper cover 5b of the table 5a is attached.
The base, which sinks into the lower part of the plane, is engraved with 1, a group of perpendicularly assembled sulins B, 8.9.

The arrangement of the slits 1-7, 8, and 9 is as follows: Y-direction slits 7.8c are arranged front and back in a direction parallel to the normal feed direction 1 of the sewing machine (hereinafter referred to as the Y direction); An X-direction slit 9 in the orthogonal direction (hereinafter referred to as the X-direction)
It is arranged.

However, in this embodiment diagram, the X-direction slit 9 is shown with its extension direction facing the needle 2 and provided in the center of the Y-slit 7.8; If they are parallel, it is not necessarily necessary that the embroidery frame 4 and the embroidery frame 4 be symmetrical with respect to the X-direction slit 9 as shown in the figure.

Furthermore, it is not necessary that the slit group carved portion of the driving plate 6 be in the shape of a cross as shown in the figure; it may be a rectangular or circular plate, and as long as it has the structural strength, σ can be used. This figure shows an example of a cross-shaped drive plate shape from the standpoint of making it lighter and lighter.

1. Below the drive plate 6, there is a support plate 10 supported on the table 5a, and on the support plate 10, five gear support shafts 13, 14 are mounted.
, 15, 16 and 17 are planted.

The support shaft 13 coaxially supports an integrated reduction gear 1920, and a Y-axis servo motor 11 with a motor gear 18 supported on the upper shaft end so as to mesh with the large-diameter gear 19 is mounted on the lower side of the support plate 10. It is installed.

The support shaft 14 is fixed to a Y-axis actuating disk 21 that meshes with a small reduction gear 20 through its outer peripheral teeth, and is pivotally connected to the support plate 10.

On the Y-axis operating disk 21, a stepped pin 22 whose upper small diameter portion is fitted into the X-direction slit 9 and is slidable in the X direction is implanted in a single layer near the outer periphery of the disk.

As a result, the Y-axis servo motor 11 rotates and the reduction gear 1
When the Y-axis actuating disk 21 rotates via the pins 9 and 20, the drive plate 6 moves in the Y direction through the sliding engagement between the stepped pin 22 and the X-direction slit 9. Given.

The support shaft 15 pivotally supports a reduction gear 24.25 having the same configuration as the reduction gear 19.20, and an X-axis servo motor 12 has a motor gear 23 fixed to the upper shaft end so as to mesh with the large diameter gear 24. is attached to the lower side of the support plate 10.

The remaining two support shafts 16 and 1γ respectively support X-axis operating discs 26 and 27 of the same diameter, which have meshing outer peripheral teeth, and the outer peripheral teeth of one of the discs 26 are connected to a reduction gear. It is meshed with a smaller diameter gear 25 of 24.25 mm.

One of the support shafts 16 is fixed to the X-axis operating disk 26, and the support shaft 16
It is pivoted to 0.

The pair of X-axis actuating disks 26 and 27 are provided with stepped pins 28, respectively, at symmetrical positions when viewed from the tangent of their mutual meshing portions.
．． 29 is planted, and the stepped pins 28 and 29 are each Y
Each of the upper small diameter portions is fitted into each of the direction slits γ and 8 so as to be slidable in the direction of each slit.

As a result, when the X-axis servo motor 12 rotates and the X-axis operating discs 26 and 27 rotate through the reduction gears 24 and 25, the stepped pin 28 and the Y-direction slit 7 engage and slide. The driving plate 6 is displaced in the X direction through the stepped pin 29 and the sliding engagement between the stepped pin 29 and the other slit 8 .

The rotation of the two servo motors 11° and 12 gives the drive plate 6 displacement operations in the Y direction and the Move in a trajectory.

In this device, the drive plate 6 that supports the embroidery frame 4 is always positioned within the orthogonal coordinate system on the side where the driving force is applied and supported by the three stepped pins 22, 28, 29. There is no need for special support means to guide and support the parallel movement of the object so that it does not tilt.

That is, the stepped pins 28, 29 for X-axis operation, which are engaged with the pair of Y-direction slits 7.8, always operate while maintaining symmetrical positions, so that the drive plate 6 is supported so as not to tilt. .

On the lower side of the support plate 10, a rotation shaft of a feedback potentiometer 30 for a Y-axis operation system is fixed to a support shaft 14, and a rotation shaft of a feedback potentiometer 31 for an X-axis operation system is fixed to a support shaft 16. There is.

Further, a pin 33 and a threaded rod 34 are fixed to the tail end of the driving plate 6, and the hole of the connecting lever 35 is fitted into these, and by tightening the nut 36 to the threaded rod 34, the connecting lever 35 is attached to the driving plate 6. is fixed to.

By removing the nut 36 from the threaded rod 34, the coupling lever 35 can be removed from the drive plate 6.

A holder 37 having a split groove is fixed to the connecting lever 35, and a nut 38 is inserted into the thread of the leg of this holder 37.
are screwed together.

The writing instrument 39 is fixed to the holder 37 by inserting a writing instrument 39 such as a pencil, a ballpoint pen, or an inking brush into the holder 37 and tightening the nut 38 as shown in the figure.

In the mechanism shown in FIGS. 1 and 2, the motor 11
and 12 by cutting off all power to gear 2.
Since the load on 1, 26 and 27 is lighter, the writing instrument 39
When you hold it in your hand and draw the desired embroidery pattern, this writing instrument 3
Gears 21, 26 and 27 rotate according to the movement of 9,
The embroidery frame 4 moves in the same way as the writing instrument 39.

Rotation of gears 21 and 26 causes potentiometer 30
and 31 are rotated, and their output represents the rotation angle of the gears 21 and 26, and thus the position of the writing instrument 39.

40 is an outer container of the electrical equipment section, and the electrical equipment panel 4 is mounted on the surface thereof.
1 is fixed.

This electrical panel 41 includes a power switch 42, a power-on indicator lamp 43, a display unit 44, a memory device readout,
Switch S to specify the write address.

-80, a read selection switch S1, an embroidery start switch 811, a write mode selection switch S1□, a write command switch 813, and various indicator lights LL are installed.

45 is a buzzer that sounds every time the write command switch 813 is closed.

Figure 3 shows the configuration of the electrical equipment section.

The electrical equipment section includes an input/output device 46a, a read/write memory (RAM) 46b for storing manual embroidery sewing data, a battery backup circuit 46c for retaining the information stored in the RAM even after the main power is turned off, and a central processing unit that performs logical operations. Units) 46d and a read-only memo 'J (RO) that stores various embroidery pattern sewing data and operation control programs.
M) A microcomputer system 46 consisting of 46e and the various input switches S mentioned above.

-813, display unit 44, various indicator lights LL, buzzer 45, a display energizing circuit 47 that energizes the display unit 44, and a lighting energizing circuit 48 that energizes the indicator light LL to light up.
, a buzzer energizing circuit 49, a motor drive circuit 50 that drives and energizes the motor 11, an analog-to-digital converter 51 that converts the output of the potentiometer 30 into a digital code, a motor drive circuit 52 that drives and energizes the motor 12, and the potentiometer 31. It is comprised of an analog-to-digital converter 53 that converts the output of the converter into a digital code.

In addition, the sewing machine motor drive circuit 54, the sewing machine sweater 55,
The sewing machine upper shaft 56 and reed switch 57 are built into the sewing machine.

ROM4 configuring the microcomputer system 46
6e inputs various embroidery pattern sewing data stored in itself to the input switch S when the input switch S1□ is closed.

The operation of sequentially reading data for one block of patterns from the read address specified by -8, driving and controlling the motors 11 and 12 to the motor rotation angle represented by the data, and rotationally energizing the sewing machine motor 54. In addition to the control program, when the input switch 812 is closed, all electricity is cut off to the motors 11 and 12 to reduce the load on the gear mechanism, and each time the input switch 813 is closed, the buzzer 45 is energized. When a one-stitch sewing command is issued to the sewing machine motor drive circuit 54, the input switch S is activated.

RAM45bi sequentially from the address specified by -89
This write control program writes the output codes of the analog-to-digital converters 51 and 53, and the input switch 811 with the input switch S1° closed.
When the input switch S is closed.

An operation control program is stored that reads data from the RAM 46a from the address specified by -89, drives and controls the motors 11 and 12 to the rotation angle indicated by the data, and urges the sewing machine motor 54 to rotate.

Note that when reading the ROM 46e and the RAM 45b, the read addresses are incremented based on the output pulse of the reed switch 57, which is emitted at a rate of one pulse per rotation in synchronization with the rotation of the upper shaft of the sewing machine. During writing, the write address is incremented each time input switch 813 is closed.

7a and 7b show the control operation of the microcomputer system 46 shown in FIG. 3.

FIG. 7a shows the embroidery sewing control operation based on various embroidery pattern sewing data stored in the ROM 46e and the RAM 4
7b shows a write control operation for storing pattern sewing data in the RAMJ 6b in response to the closing operation of the switch 813. FIG.

First, the embroidery sewing control operation based on the data of the ROMJ 6e shown in FIG. 7a will be explained.

When the input switch StO is in the open state and the user closes the input switch 5o-89, the ROMJ6 is stored in the system 46.
The read start address of e is given.

When the user closes the switch 811, the embroidery stitch data at the starting end address and the output codes of the converters 51 and 52 are compared in the CPU 4BdI, and based on the comparison result, the motor 11, 12 is driven to position the embroidery frame 4.

The sewing machine motor 55 is then urged to rotate.

The read address of the ROM 46e is incremented based on the output pulse of the reed switch 57 for each stitch, and the data comparison and positioning of the embroidery frame 4 described above are carried out during the period when the sewing machine needle is out of the fabric. It will be done.

When one block of data has been read out from the ROM 46e in this way, the sewing machine motor 55 is stopped and one of the indicator lights LL is turned on due to the "end display-1" in the last data of the block.

Next, a write control operation for storing pattern sewing data in the RAM 46b in response to the closing operation of the switch 813, shown in FIG. 7B, will be described.

When the user closes the input switch 812, the motor drive circuits 50 and 52 are commanded to release the motor lock, thereby allowing the motors 11 and 12 to rotate by external force.

Next, the user switches to Switch S. When ~S is closed, the RAM
The write start address of 46b is specified to the system 46.

When the user takes the writing instrument 39 and places its tip at a desired position and closes the switch 813, the output code of the converters 51, 53 at that time is written to the start end address of the RAM 46b, and the write address is set to the next address. At the same time as the increment, a one-stitch biasing signal is sent to the sewing machine motor drive circuit 54, and only one stitch of the cloth in the embroidery frame 4 is sewn.

When the user moves the writing instrument 39 to the next stitch position and closes the switch 813, the converter 51 at that time
．． The output code of 53 is stored in the RAM 46c, and one more stitch is made on the cloth.

Thereafter, the user continues this operation until he finishes drawing the embroidery pattern he intends under the writing instrument 39.

After drawing the pattern, switch S1□ is returned to open.

By opening this switch 812, the end of the block, that is, the "end display" is stored in the RAM 46b.

A pattern drawn with a writing instrument 39 is sewn onto the cloth.

The data thus stored in the RAM 46b is retained by the battery backup circuit 46c even when the main power is turned off.

Next, the embroidery sewing control operation based on the pattern sewing data stored in the RAM 45b shown in FIG. 7a will be explained.

The user closes switch 810 and switches S.

When ~S is closed, the reading start end address of the RAM 45b is designated to the system 46.

Further, when the switch 811 is closed, automatic embroidery is performed based on the data read from the RAM 46b, similar to the above-described continuous embroidery (reading data from the ROM 46e).

Since the embroidery hoop drive mechanism shown in FIG. 1 is simple and compact, the force required by the user to move the writing instrument 39 is relatively small, but it requires significantly more force than for normal writing.

FIG. 4 shows an embodiment that improves this.

In this, potentiometers 58, 59 operated by the user and analog-to-digital converters 60, 61 that convert their outputs into digital codes are added, and the output code of the converter 60, 61 is transferred to the input/output device. 46a.

Furthermore, an input switch 814 for manual operation and automatic drive is added.

In addition to the various control programs that are included in the embodiment shown in FIG. An operation control program is stored that controls the position of the embroidery frame 4 by using the output code of the converter 61 as the position control target value of the motor 12 and the output code of the converter 61 as the position control target value of the motor 11.

FIG. 5 shows the positions of potentiometers 58 and 59.

In this embodiment, two levers 62 are provided so that potentiometers 58,59 can be operated by one lever 62 at a time.
The rotation shafts of potentiometers 58, 59 are connected via a shaft connection mechanism.

The two-shaft connection mechanism is shown in FIG. In this FIG. 6, potentiometers 58 and 59 are fixed to case 63 in such a manner that the extension lines of their rotational axes are orthogonal to each other, and case 6
3, each rotating wheel has an arcuate arm 6 orthogonal to each other.
4.65 is fixed to one end.

The other end of each arm 64, 65 is pivotally connected to the case 63 with a pin.

Therefore, when the arm 64 rotates, the rotation axis of the potentiometer 58 rotates, and when the arm 65 rotates, the rotation axis of the potentiometer 59 rotates.

Slits are formed in the arms 64 and 65, and a joint lever 66 passes through these slits, and one end of the joint lever 66 is fixed to a support base 67 so as to be rotatable within a solid angle of 1800 degrees.

The end of the lever 62 is fixed to the other end of the joint lever 66 so as to be rotatable within a solid angle of 180°.

The leg portion of the lever 62 slidably passes through a ball 68, and the ball 68 is rotatably held by the case 63.

With this combination, by swinging the lever 62 back and forth, left and right, the shafts of the potentiometers 58 and 59 are rotated.

FIG. 8 shows that the RAM 46b of the microcomputer system 46 shown in FIG.
The write control operation for storing pattern sewing data is shown in FIG.

Note that the ROM 46 of the system 46 shown in FIG.
The embroidery stitch control operation based on the various embroidery pattern stitch data stored in the RAMJ6b and the embroidery stitch control operation based on the pattern stitch data stored in the RAMJ6b are performed in the seventh step.
This is the same as shown in Figure a.

Therefore, in response to the closing operation of switch St3 in FIG.
The write control operation for storing pattern sewing data in M46b will be explained.

When the user closes the switch 814, the lever 6
The writing instrument 39 and the embroidery frame 4 automatically move in response to the operation in step 2.

Therefore, in this embodiment, the switch 814 is closed and the switch S1□ is closed.

After specifying the RAM write start address to the system 46 by operating -8, operate the lever 62 to
By repeating the operation of moving the tip to the desired position and temporarily closing the switch 813, the figure drawn with the writing instrument 39 is sewn onto the cloth with a single stitch, and the sewing data is stored in the RA.
It is stored in M46b.

In this way, the embroidery frame 4 is automatically driven even when original pattern data is input.

In this embodiment, since the motors 11 and 12 are driven and controlled so that the output codes of the converters 60 and 61 match the output codes of the converters 51 and 53, the time σ when the lever 62 is stopped is , the output codes of converters 51 and 53 and the output codes of converters 61 and 60 are respectively equal.

Therefore, when the switch 813 is closed, which of the outputs of the converters 51, 53 and 61, 60 is stored in the RAM 4
6bI may be stored.

Which output is to be stored can be determined by the operation control program of the ROM 46e.

As described above, according to the present invention, while drawing an embroidery pattern by moving a writing instrument, the user can write data for automatic embroidery sewing of that pattern into the RAM, making pattern creation and pattern data input operations easy. It is.

Also, since the pattern is constructed as it is being drawn, it is easy to check how the input pattern will actually be sewn.

As described above, the present invention provides an automatic embroidery sewing device that allows the user to easily input patterns.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the structure of a mechanical section of an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line 1--2, and FIG. 3 is a block diagram showing the structure of an electrical component. FIG. 4 is a block diagram showing the configuration of the electrical equipment section of another embodiment of the present invention, FIG. 5 is a perspective view showing the arrangement positions of the potentiometers 58, 59, and FIG.
59 is a perspective view showing the connection mechanism of No. 59. 7a and 7b are flowcharts showing the control operation of the microcomputer system 46 shown in FIG. 3, and FIG. 7a shows the embroidery sewing control operation based on various embroidery pattern sewing data stored in the ROM 46e ,R
FIG. 1b shows the embroidery sewing control operation based on the pattern sewing data stored in the AM46b.
The write control operation for storing pattern sewing data in the RAMJ6b in response to the closing operation is shown. FIG. 8 is a flow chart showing the control operation of the microcomputer system 46 shown in FIG. 4, and shows the write control operation for storing pattern sewing data in the RAM J6b in response to the closing operation of the switch 813. 1: Sewing machine bed, 2: Needle, 3: Opening, 4: Embroidery frame, 5a: Table, 5b upper cover, 6: Drive plate, 7~
9 Ni slit, 10: Support plate, 11゜12: Motor, 13
~17: Support shaft, 18~20° 23~25: Gear, 21:
Y-wheel operating plate, 22°28, 29: Stepped pin, 26,
27: X-axis operating disc, 30, 31: Potentiometer (
X-axis, Y-axis signal generator), 33: Pin, 34: Threaded rod,
35: Connection lever, 36, 38: Nut, 37: Holder, 39: Writing instrument (position indicator), 41: Electrical panel, 42: Power switch, 43: Power on indicator lamp, 4
4: Display unit, 45: Buzzer, 46: Microcomputer system, 46b: RAM (storage device), 5O
=814' input switch, 58.59: Potentiometer (manual X-axis, Y-axis position indicating means), 62 Nillever, 6
3: Case, 64.65: Arm, 66: Joint lever 67: Abutment, 68: Ball.

Claims (1)

[Claims] 1. An embroidery frame, an X-axis drive system that reciprocates the embroidery frame in the axial direction X on a plane perpendicular to the vertical direction of the sewing needle of the sewing machine, and The embroidery sewing machine is equipped with a Y-axis drive system that reciprocates in the orthogonal axial direction Y, a storage device that stores motion control program data, an input switch device, and a central control unit, and is stored in the storage device built into the device. In an embroidery sewing device of a sewing machine that drives the embroidery frame in the X and Y directions in response to a sewing synchronization signal of the sewing machine based on embroidery stitch data inputted to the device; a coupling means for coupling; an X-axis signal generator coupled to the X-axis drive system and generating an X-axis position signal indicating the operating position of the X-axis drive system; coupled to the Y-axis drive system and the operating position of the Y-axis drive system; A Y-axis signal generator that generates a Y-axis position signal indicating a Y-axis position signal; a readable/writable memory device; and an input switch that instructs writing of the X-axis position signal and Y-axis position signal to the readable/writable memory device. The embroidery frame is characterized in that the X-axis position data and the Y-axis position data are written in a readable/writable storage device in response to a write instruction from an input switch, and the embroidery frame is driven based on the written data. , sewing machine embroidery sewing device. 2. The embroidery sewing device for a sewing machine according to claim 1, wherein the connecting means is detachable from the embroidery frame. 3. The embroidery device for a sewing machine according to claim 1, wherein each of the X-axis signal generator and the Y-axis signal generator is a potentiometer. 4. Claim 1, wherein the position pointing instrument is a writing instrument.
An embroidery device for a sewing machine according to item 1, 2 or 3. 5. An embroidery frame, an X-axis drive system that reciprocates this embroidery frame in the axial direction X on a plane perpendicular to the vertical direction of the sewing needle of the sewing machine, and It is equipped with a Y-axis drive system that reciprocates, a storage device that stores motion control program data, an input switch device, and a central control unit. In an embroidery device for a sewing machine that drives the embroidery frame in the X and Y directions in response to a sewing synchronization signal of the sewing machine based on embroidery stitch data, the embroidery device includes: a connecting means that connects a position pointing device to the embroidery frame; an X-axis signal generator coupled to the drive system and generating an X-axis position signal indicating the operating position of the X-axis drive system; coupled to the Y-axis drive system and generating a Y-axis position signal indicating the operating position of the Y-axis drive system a Y-axis signal generator; a readable/writable storage device; an input switch for instructing writing of the X-axis position signal and the Y-axis position signal into the readable/writable storage device; manual X-axis position indicating means; and a manual Y-axis Position indication means; Drives the X-axis drive system and the Y-axis drive system according to instructions from the manual X-axis position indication means and the manual Y-axis position indication means, and drives the X-axis drive system according to the write instruction from the input switch An embroidery device for a sewing machine, characterized in that position data and Y-axis position data are written in a readable/writable storage device, and an embroidery frame is driven based on the written data. 6. The embroidery device for a sewing machine according to claim 5, wherein each of the manual X-axis position indicating means and the manual Y-axis position indicating means is a potentiometer. 7. The embroidery device for a sewing machine according to claim 5, wherein the connecting means is detachable from the embroidery frame. 8. The embroidery device for a sewing machine according to claim 5, wherein each of the X-axis signal generator and the Y-axis signal generator is a potentiometer. 9. Claim 5, wherein the position pointing instrument is a writing instrument.
8. An embroidery device for a sewing machine according to item 6, item 7, or item 8.