JP2899178B2 - Stitch data creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stitch data creating apparatus suitable for creating stitch data for realizing an embroidery pattern with an embroidery machine such as a zigzag sewing machine with rotation, and more particularly to teaching data from teaching data. The present invention relates to a stitch data creation device that creates stitch data capable of enlarging and reducing an embroidery pattern.

[0002]

2. Description of the Related Art In general, a base on which a lower thread for embroidery is disposed, and an embroidery needle on the upper thread side is reciprocated up and down at a position opposed to the lower thread side provided on the base. A head of an embroidery machine that swings with a required swing width, and is provided under the head so as to be movable on the base, and is driven in a x-axis direction and a y-direction on the base by a driving source. A moving frame driven in the axial direction, and a rotating frame which holds the embroidery cloth in an extended state in the moving frame and is rotated together with the embroidery cloth in the moving frame by a rotation source provided in the moving frame. A rotating zigzag sewing machine having a structure is known, for example, from Japanese Patent Application Laid-Open No. 63-203188.

In this type of zigzag sewing machine with rotation, when the embroidery needle is reciprocated up and down while swinging the embroidery needle at a required swing width by the head of the embroidery machine, the moving frame is driven in the x-axis and y-axis directions. In addition, since the embroidery cloth is rotated together with the rotating frame in the moving frame, a zigzag pattern corresponding to the swing width of the embroidery needle can be rotated to realize an embroidery pattern on the embroidery cloth. There is an advantage that an embroidery pattern can be created in a relatively short time.

In this kind of zigzag sewing machine with rotation, position detecting means for detecting the amount of movement of the moving frame in the x-axis and y-axis directions, and rotation angle detecting means for detecting the rotation angle of the rotating frame with respect to the moving frame. And a swing width detecting means for detecting the swing width of the embroidery needle, and a teaching operation, which is usually called an "exemplary learning" method, is performed prior to repeatedly reproducing the embroidery pattern.

That is, during the teaching operation, a skilled operator prepares a desired embroidery pattern by adjusting the swing width of the reciprocating embroidery needle while manually moving and rotating the moving frame and the rotating frame. When reading, each signal is read from each of the detection means, and the position of the moving frame, the rotation angle of the rotating frame, the swing width of the embroidery needle, and the like are stored,
Based on the stored data, the drive source, the rotation source, and the like are operated to repeatedly reproduce an embroidery pattern similar to that of an expert.

On the other hand, a base on which a lower thread for embroidery is arranged;
An embroidery machine head provided on the base for reciprocating the upper thread side embroidery needle up and down at a position facing the lower thread side;
A moving frame that is located below the head and is movably provided on the base, and is driven on the base by a drive source in the X-axis and Y-axis directions; There is also known a lockstitch sewing machine (hereinafter referred to as another conventional technique) configured to realize an embroidery pattern based on stitch data on an embroidery cloth held in a state where the embroidery cloth is held.

[0007] Stitch data for drive-controlling this kind of lockstitch sewing machine is usually created using a pattern making machine shown in FIG.

In the drawing, reference numeral 1 denotes a tablet as a pattern making machine. The tablet 1 is a board 2 on which a draft 3 as an embroidery original drawing is pasted on a drawing area 2A.
A menu sheet 4 as stitch condition selecting means provided on the board 2 adjacent to the drawing area 2A;
A cursor 5 serving as reading means for reading the outline of the draft 3 from the draft 3 on the board 2. The cursor 5 has a plurality of push buttons ( (Not shown).

Here, a draft 3 is created by using the tablet 1.
In order to create stitch data corresponding to (1), first, the outlines 3A and 3B of the draft 3 are read by the cursor 5. Then, by selecting the stitch pattern as the zigzag pattern on the menu sheet 4 and selecting the thread density, the maximum length of the stitch, etc., stitch data is created as illustrated in FIG. The stitch data does not include data corresponding to the swing width W0, the rotation angles θ0 to θk, and the needle centers N1 to Nk in FIG. 13.)

That is, when the start point N0 of the embroidery pattern shown in FIG. 12 is designated by the cursor 5 and the coordinates of the draft on the board 2 are the AB coordinates in FIG. XY coordinates set as 0) are set. Then, the needle drop points S0, S1, S2, S3,
By specifying Sk on the XY coordinates,
Stitch data forming a zigzag pattern corresponding to the outline of the draft 3 is created and stored as punching data on a tape (not shown) using a tape puncher or the like.

Thus, when the drive of the lockstitch sewing machine is controlled based on the stitch data as the punching data, first, the punching data is read by a tape reader (not shown). Then, the moving frame is moved in the X-axis and Y-axis directions based on the read data, and the embroidery needles are moved from the starting point N0 to the needle drop points S0, S1, S2, S3,
... by sequentially moving the hands to Sk, the draft 3
The embroidery cloth realizes an embroidery pattern forming a zigzag pattern corresponding to the contour of the embroidery.

[0012]

In the zigzag sewing machine with rotation according to the prior art described above, the moving frame is defined as x.
Since the embroidery cloth is rotated together with the rotating frame within the moving frame while moving in the axis and y-axis directions, an embroidery pattern obtained by rotating the zigzag pattern according to the swing width of the embroidery needle is shown in FIG. There is an advantage that a zigzag pattern with rotation such as the draft 3 shown in FIG. 12 can be realized on the embroidery cloth in a short time.

However, in this case, a so-called teaching data is created by a skilled operator through a teaching operation, and the moving frame, the rotating frame and the embroidery needles are driven based on this data. Embroidery pattern can be simply reproduced, but it is difficult to enlarge, reduce or deform the embroidery pattern, or change its position, and the embroidery pattern cannot be reproduced with high quality. There is.

On the other hand, in another lockstitch sewing machine according to the prior art, the embroidery pattern is enlarged, reduced or deformed, or the position is changed by appropriately editing the stitch data created by the tablet 1. Can be reproduced. However, in the case of this lockstitch sewing machine,
Since the embroidery needle cannot be swung with a desired swing width and it is not provided with a rotating frame or the like for rotating the embroidery cloth, the embroidery needle moves when creating a zigzag pattern with rotation such as the draft 3 illustrated in FIG. The frame must be moved relatively largely in the X-axis and Y-axis directions, and it takes a relatively long time to create an embroidery pattern, and there is a problem that the embroidery pattern cannot be realized in a short time like a zigzag sewing machine with rotation.

Therefore, the present inventor creates the following stitch data having the swing width W and the rotation angle θ in addition to the XY coordinates using the tablet 1 shown in FIG. The operation of the zigzag sewing machine with rotation was studied.

That is, when the starting point N0 of the embroidery pattern shown in FIG. 13 is set as the origin (0, 0) of the XY coordinates, the needle drop point S0 has a swing width W0 / 2 with respect to the starting point N0. And
Since the rotation angle θ0 (initial rotation angle) , the starting point N
0,

[0017]

## EQU1 ## The data is stored as N0 (0, 0, .theta.0, W0) on the tape by a storage means such as a tape puncher.

Next, the swing width W1 / 2 is set with respect to the needle center N1.
The first needle drop point S1 having a rotation angle .theta.1 and the X, Y coordinates of the needle center N1 are (X1, Y1), the needle center N1 is

[0019]

## EQU2 ## This is stored on the tape as N1 (X1, Y1, .theta.1, W1).

The second needle drop point S2 has a swing width W2 / 2 and a rotation angle θ2 with respect to the needle center N2, and the third needle drop point S3 has a swing width W3 / 2 with respect to the needle center N3. The rotation angle becomes θ3. If the X and Y coordinates of the needle centers N2 and N3 are (X2, Y2) and (X3, Y3), the needle center N1
Of movement in the X-axis and Y-axis directions from the sensor to the needle centers N2 and N3
X2, ΔY2, ΔX3, ΔY3 are:

[0021]

## EQU3 ## Since ΔX2 = X2−X1, ΔY2 = Y2−Y1 ΔX3 = X3−X2, ΔY3 = Y3−Y2, the needle centers N2 and N3 are

[0022]

## EQU4 ## N2 (.DELTA.X2, .DELTA.Y2, .theta.2, W2) is stored on the tape as N3 (.DELTA.X3, .DELTA.Y3, .theta.3, W3).

Further, assuming that the needle drop point Sk is the swing width Wk / 2 and the rotation angle θk with respect to the needle center Nk, the needle center Nk at this time is:

[0024]

## EQU5 ## Nk (.DELTA.Xk, .DELTA.Yk, .theta.k, Wk) where .DELTA.Xk = Xk-Xk-1.DELTA.Yk = Yk-Yk-1.

The start point N0 and the needle center N1
, N2, N3,... Nk, by reading punching data as stitch data with a tape reader or the like and controlling the operation of the zigzag sewing machine with rotation, a zigzag pattern with rotation can be realized in a relatively short time. The pattern can be enlarged, reduced or deformed.

However, using the tablet 1,
To create stitch data as shown in Equations 2 and 4, the embroidery pattern is divided into several blocks on the tablet 1 and contour points are designated by the cursor 5, and the swing width W and rotation angle of each needle drop point Since θ and the like must be calculated separately, and cannot be applied to the zigzag sewing machine with rotation unless this is done, there is a problem that a great deal of labor is required for drafting and punching.

The present invention has been made in view of the above-described problems of the prior art, and the present invention has been made by creating stitch data based on data created by teaching work.
It is an object of the present invention to provide a stitch data creation device that can reproduce a zigzag pattern with rotation in a short time and can easily enlarge, reduce, or deform an embroidery pattern.

[0028]

In order to solve the above-mentioned problems, the present invention employs a configuration in which the embroidery cloth held in a state of being extended on a rotating frame is moved in the x-axis and y-axis directions while being manually rotated. The embroidery needle is driven at a desired swing width to provide a desired embroidery pattern on the embroidery cloth. The embroidery machine for teaching is provided on the embroidery machine for teaching, and the x-axis and the y-axis of the embroidery cloth are provided. Direction movement amount (Δx, Δy) , rotation angle
(Θ) and the teaching data C (Δx, Δy, θ ) corresponding to the embroidery pattern consisting of the swing width (W) of the embroidery needle.
-Θ0, W) (where the the θ0 initial rotation angle), and the teaching data creation means for creating a data frame center of the rotary frame relative to the needle center of the embroidery needle, teaching data created by the teaching data creation means C (Δ
x, Δy, θ-θ0, the W), the embroidery needle of the needle center data with respect to the frame center of the rotary frame stitch data N
(ΔX, ΔY, θ, W) ;
The stitch data N (Δ
X, ΔY, θ, W) .

[0029]

With the above arrangement, the teaching data C (.DELTA.x, .DELTA.y, .theta .-. Theta.0,
W) can be converted into stitch data N (ΔX, ΔY, θ, W) that allows enlargement, reduction or deformation of the embroidery pattern in the same manner as data created by a pattern creating machine such as a tablet, and this stitch data N (ΔX , [Delta] Y, theta, W) and can be stored as a punching data on the tape for example in data storage means such as a tape puncher. Then, by controlling the drive of the zigzag embroidery machine with rotation in a state where the embroidery pattern is enlarged, reduced or deformed based on the punching data or the like, the desired embroidery pattern enlarged, reduced or deformed appropriately can be obtained. Can be realized.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In the figure, reference numeral 10 denotes an embroidery machine dedicated to teaching as an embroidery machine for teaching, and 11 denotes the embroidery machine 10.
The base 11 comprises a plurality of legs 12, 12,... And a support plate 13 provided on each of the legs 12, and a central portion of the support plate 13. An insertion hole (not shown) for the embroidery needle 16 described later is formed in an oval shape. A bobbin (not shown) for a lower thread is disposed below the insertion hole, and the lower thread is held in a tensioned state so as to be entangled with the upper thread on the embroidery needle 16 side.

Reference numeral 14 denotes a head of an embroidery machine provided on a support plate 13. The head 14 raises and lowers an embroidery needle 16 on the upper thread side via a needle shaft 15 at a position facing the lower thread side. The embroidery needle 16 is swung in the left-right direction (x-axis direction) around the fulcrum 15A of the needle shaft 15 as shown in FIG.

Reference numeral 17 denotes a moving frame movably provided on the support plate 13 of the base 11. The moving frame 17 is formed in a substantially rectangular plate shape as shown in FIG. A rotating frame 20 is rotatably provided. Rollers (not shown) such as balls that roll on the support plate 13 are provided on the lower surface side of the moving frame 17, and the moving frame 17 is placed on the support plate 13 through the respective rolling elements. It is designed to move smoothly. Here, the moving frame 17 is guided by the guide arm 19 having the parallel link mechanism on the support plate 13 in the left and right directions (x-axis direction) and in the front-rear direction (y-axis direction).
It is movable only in the x-axis direction and the y-axis direction.

Reference numeral 20 denotes a rotating frame rotatably disposed in the moving frame 17. The rotating frame 20 is formed as a circular ring, and smoothly moves in the moving frame 17 via a bearing (not shown) or the like. It is to be rotated. And the rotating frame 2
The embroidery cloth 21 is held in an expanded state by an embroidery frame (not shown) made of a circular ring.
Are rotated together with the rotating frame 20 about the frame center C of the rotating frame 20.

Reference numeral 22 denotes a tablet which extends rearward from the support plate 13 of the base 11 and is fixed to the support plate 13.
The tablet 22 has a cursor center 23A of the cursor 23.
Is detected, the movement amount of the moving frame 17 is detected as the position in the x-axis direction and the y-axis direction. Here, the cursor 23 is provided at the distal end of the cursor arm 24, and the proximal end of the cursor arm 24 is fixed to the rear end side of the moving frame 17. Then, the operator manually moves the moving frame 17 by x.
When the cursor 23 is moved in the directions of the axis and the y-axis, the cursor 23 moves on the tablet 22 in the directions of the x-axis and the y-axis.
3A is detected as the position of the moving frame 17 in the x-axis and y-axis directions, and the detection signal is input to a control unit 41 described later.

Reference numeral 25 denotes a rotation sensor provided as a rotation angle detecting means provided on the moving frame 17 adjacent to the rotating frame 20. The rotating sensor 25 moves when the operator rotates the rotating frame 20 manually. The rotation angle θ of the rotating frame 20 with respect to the frame 17 is detected, and the detection signal is input to the control unit 41.

Reference numeral 26 denotes a control lever provided on the lower surface side of the support plate 13. The control lever 26 is pushed by an operator with a kneecap or the like in the direction of arrow D, and
The swing width W of the embroidery needle 16 shown in FIG. 3 is variably controlled in accordance with the pushing amount. The swing width W of the embroidery needle 16 is detected by a swing width sensor 27 provided on the back side of the head 14 as swing width detecting means (see FIG. 2), and the detection signal is input to the control unit 41.

Reference numeral 28 denotes a speed control pedal provided at the lower end of the base 11. The control pedal 28 is depressed by an operator and controls the rotation speed of a spindle motor (not shown) according to the depressed amount. I do. Since the embroidery needle 16 of the head 14 reciprocates in the vertical direction in accordance with the rotation speed of the spindle motor together with the needle shaft 15, the embroidery pattern creation speed is controlled in accordance with the amount of depression of the control pedal 28. Reference numeral 29 denotes a switch box provided below the support plate 13 and provided on the front side of the control unit 41. The switch box 29 includes a main power switch 29.
A, a start switch 29B, a stop switch 29C, and a lamp 29D that are turned on when the start switch 29B is turned on are provided.

Reference numeral 30 denotes a control panel provided on the support plate 13. The control panel 30 has a start button 3 which is pressed at the start of a teaching operation or the like as shown in FIG.
1, a stop button 32 depressed when changing the embroidery thread (upper thread), a speed switching button 33 for switching the speed of creating the embroidery pattern between high speed and low speed, and at the end of embroidery pattern creation. An end button 34 to be pressed, a color change knob 35 that is manually rotated when the color of the embroidery thread (upper thread) is changed, and a color change knob 35 instructing a color selection of the embroidery thread, and pressed after the color change by the color change knob 35 A setting button 36 for performing color setting, a command button 37 for outputting a write command to a floppy disk device 43 described later, and the like are provided.

Further, the control panel 30 is provided with an origin switch 38 located at the upper right corner, and the origin switch 38 is disposed deeper than the front surface of the control panel 30 so that an operator may operate the switch incorrectly. It is designed to prevent you from doing so. The origin switch 38 is depressed with a tool tip such as a screwdriver when determining the origin position on the tablet 22 prior to the teaching operation, and the control unit 41 stores the origin position.
Reference numeral 39 denotes a power lamp which is turned on when the power switch 29A is turned on or the like.

Reference numeral 40 denotes a display provided on the upper side of the control panel 30. The display 40 displays stitch data and the like created by converting and calculating teaching data by a teaching operation as described later, and transmits the data to an operator or the like. I am trying to confirm it. In this case, the display 40 displays a circular frame corresponding to the rotating frame 20, and functions X, Y or Δ of stitch information.
The display of X, ΔY, θ, W and the number of stitches are performed, and the floppy disk device 43 and the punching device 4 are displayed.
When data is output to 4 or the like, the position in the middle of output is displayed on the screen by + (register mark) or the like.

Reference numeral 41 denotes a control unit as teaching data generating means provided on the left side of the base 11 below the support plate 13, and the control unit 41 is constituted by a microcomputer or the like. As shown in FIG. 5, the tablet 22, the rotation sensor 25, the swing width sensor 27, the speed control pedal 28, the switch box 29, the control panel 30 and the like are connected, and the output side is connected to the spindle motor and a later-described conversion calculation unit 42 and the like. ing. The control unit 41 performs teaching data creation processing and the like to be described later based on signals from the tablet 22, the rotation sensor 25, the swing width sensor 27, and the like.

Reference numeral 42 denotes a conversion operation unit as data conversion means attached to the control unit 41.
Reference numeral 2 denotes a microcomputer or the like, the input side of which is connected to a control unit 41 as shown in FIG. 5, and the output side of which is a display 40, a floppy disk device 43 as data storage means, a punching device 44 such as a tape puncher, and the like. It is connected. Then, the conversion operation unit 42 converts the teaching data created by the control unit 41 into stitch data as described below, and displays the stitch data on the display 40.
Floppy disk device 43 or punching device 44
To store the data on a floppy disk (not shown) or a tape 45 shown in FIG.

Next, in FIG.
2 shows a rotary zigzag sewing machine as a rotary zigzag embroidery machine that reproduces embroidery with the stitch data converted and calculated in step 2. The sewing machine 46 is composed of a microcomputer or the like almost in the same manner as the rotary zigzag sewing machine described in the prior art. Although the sewing machine control unit 47 is provided, the sewing machine control unit 4
The input side 7 is connected to a keyboard 48, a floppy disk device 49, a tape reader 50, an editor 51, and the like. The output of the sewing machine controller 47 includes a main shaft motor 52 for reciprocating an embroidery needle (neither is shown) with the head of the sewing machine 46, and a swing width W of the embroidery needle together with a needle shaft (not shown). Needle shaft rocking motor 53 for rocking, and X-axis motor 54 and Y for moving a moving frame (not shown) of sewing machine 46 in the X-axis and Y-axis directions.
The shaft motor 55 is connected to a frame rotating motor 56 for rotating a rotating frame (not shown) holding the embroidery cloth stretched on the moving frame, a display 57 and the like.

Then, the sewing machine control section 47 transmits the stitch data stored on the floppy disk or tape to the floppy disk device 49 or the tape reader 50.
The spindle motor 52, the needle shaft swing motor 53, the X-axis motor 54,
By controlling the driving of the Y-axis motor 55 and the frame rotation motor 56, an embroidery pattern corresponding to the stitch data is realized while moving the embroidery needle on the embroidery cloth held in a state of being extended on the rotation frame. Further, by reading the stitch data by the editing machine 51, the stitch data can be enlarged, reduced or appropriately deformed and edited again. The edited stitch data is displayed on the display unit 57 for confirmation. In addition, a desired embroidery pattern can be realized on the embroidery cloth.

The stitch data creating apparatus and the zigzag sewing machine with rotation 46 according to the present embodiment have the above-described configuration. Next, the operation thereof will be described.

First, when the teaching data is created using the teaching embroidery machine 10, as shown in FIGS. 1 and 2, the embroidery needle 16 hanging from the head 14 is placed on the center C of the rotating frame 20. By operating the origin switch 38 of the control panel 30 in this state by using an ejection jig (not shown) or the like, the position where the cursor center 23A of the cursor 23 is placed on the tablet 22 is x- Initially set as the origin position (0, 0) for the y coordinate. After completion of the initial setting, the upper thread is passed through the embroidery needle 16 and an operator who is an expert creates a desired embroidery pattern on the embroidery cloth 21 to perform a teaching operation as described below.

In this case, an embroidery pattern forming a zigzag pattern corresponding to the outline of the draft 3 shown in FIGS. 12 and 13 will be described as an example with reference to FIGS. In FIG. 7, the needle drop points S0, S
When moving the embroidery needle 16 in the order of 1, S2, S3, the operator individually illustrates a state in which the operator moves the rotary frame 20 in the order of the arrows.

First, at the origin position (0, 0), the moving frame 17 is moved together with the rotating frame 20 in the x-axis direction so as to move the frame center C of the rotating frame 20 at the starting point N0 to the position of the frame center C0. Is moved in parallel by the movement amount x0 in FIG.
In this state, the embroidery needle 16 is located at the start point N0. When the embroidery needle 16 is swung with the swing width W0, the embroidery needle 16 moves from the start point N0 to the needle drop point S0 having the swing width W0 / 2.
And the rotation angle θ at this time is zero,
The frame center C0 at this time is

[0050]

## EQU6 ## The result is stored in the storage area 41A of the control unit 41 as C0 (x0, 0, 0, W0).

Next, the moving frame 17 is moved together with the rotating frame 20 so that the embroidery needle 16 is aligned with the position of the needle center N1, and the rotating frame 20 is rotated by the rotation angle θ = θ1 'to move the frame center C to the position shown in FIG.
When the embroidery needle 16 is arranged at the center C1 of the middle frame and set to the swing width W1, the embroidery needle 16 is actually moved from the needle center N1 to the needle drop point S1 having the swing width W1 / 2/2, and the frame center with respect to the needle center N1 at this time. The coordinate position of C1 is (x1, y1) on the xy coordinates.
), And the rotation angle θ is θ1 '.

[0052]

## EQU7 ## C1 (.DELTA.x1, .DELTA.y1, .theta.1 ', W1) where .DELTA.x1 = x1-x0.DELTA.y1 = y1-0 is stored in the storage area 41A.

Thereafter, in the same manner, the embroidery needle 16 is
The moving frame 17 is moved together with the rotating frame 20 in the order of the arrows in FIG. 7 so as to match the positions of 2 and N3, and the rotating frame 20 is sequentially rotated by the rotation angles θ = θ2 ′ and θ3 ′ in the direction of arrow E. By arranging the frame center C at the frame centers C2 and C3 in FIG. 7 and setting the swing widths W2 and W3 respectively, the needle centers N2 and N3 are set.
The frame centers C2 and C3 for

[0054]

C2 (Δx2, Δy2, θ2 ′, W2) where Δx2 = x2−x1 Δy2 = y2−y1 C3 (Δx3, Δy3, θ3 ′, W3) where Δx3 = x3−x2 Δy3 = y3−y2 Is stored in the storage area 41A.

As shown in FIG. 8, the rotating frame 20 is moved in the x-axis and y-axis directions so that the embroidery needle 16 is aligned with the position of the needle center Nk, and the rotation angle θ = θk ′ in the direction of arrow E. By rotating the frame center C at the frame center Ck by rotating the frame center Ck and setting the swing width Wk, the frame center Ck with respect to the needle center Nk is

[0056]

## EQU9 ## Ck (.DELTA.xk, .DELTA.yk, .theta.k ', Wk) where .DELTA.xk = xk-xk-1.DELTA.yk = yk-yk-1 is stored in the storage area 41A.

That is, in the teaching operation, the embroidery needle 1
In a state where the swing width W of No. 6 is zero, the embroidery needle 16 moves to the starting point N0.
, And then the center of the needle N
.., Nk are sequentially arranged, the rotating frame 20 is rotated at angles θ = θ1 ′, θ2 ′, θ3 ′,.
While moving the moving frame 17 by x
The embroidery needle 16 is moved in the axis and y-axis directions.
Are moved at the needle drop points S0, S1, S2, S3,... Sk, the frame centers C0, C1, C2, C of the rotary frame 20 are moved.
3,... Ck are sequentially moved as shown in FIG. 6. At this time, the data of the center N of the needle, that is, the data of the frame centers C0, C1, C2, C3,. Are sequentially created as shown in the above equations 6 to 9, and the storage area 41
The data stored in A is the teaching data C (Δx, Δy, θ ′, W) of the frame center C with respect to the needle center N.

However, the teaching data C (Δ
x, .DELTA.y, .theta. ', W) as shown in FIG.
2, C3,... Ck, the embroidery pattern formed by the needle drop points S0, S1, S2, S3,. Does not correspond at all to expansion, contraction or deformation of the embroidery pattern, and in some cases, the embroidery pattern itself may be completely collapsed.

Then, the present inventors have determined that the teaching data C (.DELTA.x, .DELTA.y, .theta. ', W), that is, the frame centers C0, C1, C2, C3,... C with respect to the needle center N (start point N0).
k is converted to the frame centers C0, C1, C2, C3,.
Of the needles N1, N2, N3,.
, That is, the needle center N including the starting point N0 with respect to the frame center C (frame center C0 in FIG. 6) on the X'-Y 'coordinates.
1, N2, N3,..., Nk.

In this case, the needle center Nk with respect to the frame center C which is the origin of the X'-Y 'coordinates, for example, the frame center Ck in FIG.
The X'-Y 'coordinate data (Xk', Yk ') is represented by points Ck, E, and F as shown in FIG. 9 when the frame center Ck is displayed as Ck (xk, yk, .theta.k', Wk). A right triangle formed by points F, G, and Nk, a point Nk,
The right triangle formed by P and Q and the right triangle formed by points Q, R and Ck are similar to each other, and by using the trigonometric function of the rotation angle θk ',

[0061]

Xk ′ = xk cos θk′−yk sin θk ′ Yk ′ = xk sin θk ′ + yk cosθk ′ Based on the expression 10, the data on the X′−Y ′ coordinate of the needle center Nk is ,

[0062]

## EQU11 ## Ck (xk, yk, .theta.k ', Wk) → Nk
The conversion operation is performed as (Xk ', Yk', .theta.k ', Wk).

Then, similarly, X 'of the needle center Nk-1
The data on the -Y 'coordinate is

[0064]

## EQU12 ## Ck-1 (xk-1, yk-1, θk-1 ', Wk-1
) → Nk-1 (Xk-1 ', Yk-1', θk-1 ', Wk-1
), The needle center Nk is calculated from the data of the frame center Ck by

[0065]

Ck (Δxk, Δyk, θk ′, Wk) → N
k (.DELTA.Xk ', .DELTA.Yk', .theta.k ', Wk) where the conversion operation is performed as .DELTA.Xk' = Xk'-Xk-1'.DELTA.Yk '= Yk'-Yk-1'. .. Are calculated in the same manner for the needle centers N1, N2, N3,.

The needle drop points S0, S1, S shown in FIG.
The zigzag pattern composed of 2, S3,... Sk has an X ″ axis corresponding to the movement amount x0 on the X ″ −Y ″ coordinate obtained by rotating the XY coordinate shown in FIG. The rotation angles θ1 ′, θ2 ′, θ3 ′,... Θ are the same as the zigzag pattern translated in parallel along the X ′ axis in FIG.
k 'is the rotation angles θ0, θ1, θ2, θ3,.
For θk,

[0067]

## EQU14 ## Since there is a relationship of θ1 '= θ1−θ0 θ2 ′ = θ2−θ0 θ3 ′ = θ3−θ0 θk ′ = θk−θ0, the teaching data C (Δx, Δy, θ ', W) , that is, teach
Data C (Δx, Δy, θ−θ0, W) is calculated based on the above equations ( 13 ) and (14 ) .

[0068]

(15) C (Δx, Δy, θ ′, W) → N (ΔX, ΔY, θ,
W), a conversion operation is performed by the conversion operation unit 42 as stitch data N (ΔX, ΔY, θ, W) of the center N of the needle with respect to the center C of the frame composed of the above formulas 1 to 5.

By converting the teaching data C (Δx, Δy, θ ′, W) of the frame center C into the stitch data N (ΔX, ΔY, θ, W) of the needle center N as shown in FIG. Needle drop points S0, S1, S2, S3,
, Sk, and the draft 3 is drawn using the tablet 1 like the embroidery pattern of the needle drop points S0, S1, S2, S3,... Sk illustrated in FIGS. It can be created similarly. Also, the embroidery position can be changed by changing the offset value corresponding to the movement amount x0, and the rotation angle θ is calculated by adding or subtracting the offset value corresponding to the rotation angle θ0 for each number of stitches. It is possible, which means that embroidery can be started from any position and angle.

The converted stitch data N
From (ΔX, ΔY, θ, W), needle drop points S0, S1, S2
, S3,... Sk are displayed on the display 40 as shown in FIG. 1, and are written as 3 to 7 bytes of data on a floppy disk or tape 45 by a floppy disk device 43 or a punching device 44. It is.

Here, the starting point N0, needle centers N1, N2,... Written on the tape 45 by the punching device 44.
In FIG. 10, the stitch data N (ΔX, ΔY, θ, W) is punched, and the function data F1, F2, F3, F4, and F5 are appropriately combined to generate an embroidery pattern creation speed signal. It is used as a stop signal or a color selection signal, and is set by operating the control panel 30 shown in FIG. The function data X and Y indicate the polarities of the X-axis data and the Y-axis data. Further, when the embroidery needle is swung to the left as shown by the needle drop points S0 and S2 shown in FIG. The eyes (positions of the function data Y) are punched. The EB mark of the function data specifies the start of each stitch data. Bits 0 to 6 are 1,2,4,8,16,32,64 in binary.
And the amount of movement in the X-axis and Y-axis directions and the swing width W are 0 to
6.4 mm and the rotation angle θ
6.4 ° and higher data 12.8 to 204.8 °.

Then, at the starting point N0, the stitch data is expressed as X0 = 0, Y0 = 0, .theta.0 = 25.degree.
Assuming that W0 = 5.0 mm, for example, by punching the function data F1 and F4, the color selection of the embroidery thread (upper thread) is designated, the start of the data is designated by the EB mark, and the rotation angle .theta.0 is set. , The bit corresponding to the swing width W0 is punched. Also, in this case,
The embroidery needle moves from the starting point N0 to the needle drop point S0 with W0 / 2 =
Since the needle is moved by swinging it to the left by 2.5 mm, the rotation angle θ
The sixth bit of the upper data of 0 is punched, and the start point N0 is configured as 6-byte data as a whole.

Next, at the needle center N 1, the stitch data is expressed by the following equation (2): X 1 = 0.2 mm, Y 1 = 0.3 mm,
If θ1 = 30 ° and W1 = 5.1 mm, for example, if there is no change in the function data, only the EB mark is punched, and bits corresponding to the movement amounts X1, Y1, the rotation angle θ1, and the swing width W1 are punched. . In this case, the embroidery needle is swung rightward by W1 / 2/2 = 2.55 mm from the needle center N1 to the needle drop point S1, so that the sixth bit of the upper data of the rotation angle θ1 is not punched. , Specify as right swing. Further, at the needle center N2, the stitch data becomes ΔX2 =
0.2 mm, ΔY 2 = 0.3 mm, θ 2 = 35 °, W 2
Assuming that = 5.3 mm, punching is performed based on these values as shown in FIG.

Note that these stitch data N (ΔX,
ΔY, θ, W), when the swing width W is zero, the rotation angle θ is unnecessary, so that the data of the swing width W and the rotation angle θ is omitted, and the function data and the movement amounts ΔX, ΔY are omitted.
The stitch data is configured as 3-byte data consisting of When the rotation angle θ is 12.8 ° or more, the upper data of the rotation angle θ is 12.8 to 2 in the range of bits 0 to 4.
Punched as 44.8 °. On the other hand, when the swing width W is 12.8 mm or more, the upper data of the swing width W is used in the range of bits 0 to 4. In this case, the stitch data N (ΔX, ΔY, θ, W) is 7-byte data. Be composed.

Thus, the stitch data N () of the needle centers N1, N2,... Including the start point N0 with respect to the frame centers C0, C1, C2, C3,. ΔX, Δ
Y, θ, W) are read into the sewing machine controller 47 of the zigzag sewing machine with rotation 46 (see FIG. 11) via the tape reader 50 or the floppy disk device 49 or the like. Then, the sewing machine control unit 47 reads the stitch data N
Based on (ΔX, ΔY, θ, W), the main shaft motor 52, the needle shaft swing motor 53, the X-axis motor 54, the Y-axis motor 55, the frame rotation motor 56, etc. are drive-controlled, and the embroidery needle is moved with the swing width W. While reciprocating up and down while swinging, the moving frame is moved in the X-axis and Y-axis directions by ΔX and ΔY (actually, the inverse amount is calculated as the data of the frame center C from the moving amounts ΔX and ΔY of the needle center N). ., Sk by rotating the rotating frame holding the embroidery cloth by the rotation angle .theta. By the corresponding amounts .DELTA.x, .DELTA.y) of the needle drop points S0, S1, S2, S3,.
An embroidery pattern similar to a zigzag pattern consisting of the same can be repeatedly reproduced.

Here, XY is calculated from the data of the frame centers C0, C1, C2, C3,... Ck on the xy coordinates shown in FIG.
The data of the needle centers N1, N2, N3,... Nk including the starting point N0 on the coordinates (X'-Y 'coordinates), that is, the teaching data C (.DELTA.x, .DELTA.y, .theta.', W) is converted to the stitch data N.
Embroidery is realized by converting to (ΔX, ΔY, θ, W). In this case, the starting point N0 is (0, 0, θ0, W0), and the moving amount from the starting point N0 to the center C0 of the frame. x0
Is not limited to the value at the time of teaching, and the same embroidery pattern can be reproduced by arbitrarily setting the value of the movement amount x0 on the side of the zigzag sewing machine with rotation 46 before the start of embroidery.

Further, the embroidery cloth is moved to an arbitrary position by the moving frame and the rotating frame before the start of the embroidery, and an arbitrary start point N0 (X0, Y
0, θ0, W0), even if embroidery is started, these arbitrary offset values X0, Y0, θ0 will be added to the values at the time of teaching.
Is added, the zigzag sewing machine 46 with the rotation
Before starting the embroidery, these arbitrary offset values X0, Y
0, θ0 are added and subtracted, and the subsequent needle drop points S0, S1, S2
, S3,... Sk are needle drop points S0, S1, S2, S in FIG.
3... An embroidery pattern similar to the embroidery pattern made by Sk can be reproduced by moving the hands according to the data.

The stitch data N (ΔX, ΔY,
θ, W) can be read by the editing machine 51, and the embroidery pattern can be enlarged, reduced or deformed, and edited again. The edited data can be displayed on the display 57 and confirmed. Zigzag sewing machine with rotation 46 based on data
Is operated to reproduce the edited embroidery pattern on the embroidery cloth. In this case, an editing device dedicated to the stitch data N (ΔX, ΔY, θ, W) is separately prepared in place of the editing machine 51, and before the stitch data is read into the zigzag sewing machine with rotation 46 by this editing device, the enlargement is performed. , Editing work such as reduction or deformation.

Therefore, according to the present embodiment, the teaching data C (Δx,
Δy, θ ′, W) are created as data of the center of the frame with respect to the center of the needle, and the teaching data C (Δx, Δy,
θ ′, W) is the stitch data N of the center of the needle with respect to the center of the frame.
After performing the conversion operation as (ΔX, ΔY, θ, W), the stitch data N (ΔX, ΔY, θ, W) is stored in the floppy disk or tape 45 by the floppy disk device 43 or the punching device 44 or the like. Therefore, the embroidery pattern can be enlarged without using the tablet 1 or the like as the pattern creator shown in FIG.
Stitch data N (ΔX, Δ
Y, θ, W) can be easily created in a short time, and the embroidery pattern based on the stitch data can be reproduced with high quality by the zigzag sewing machine with rotation 46.

By reading the stitch data into the editing machine 51 or the like, the embroidery pattern can be easily enlarged, reduced or deformed, and the stitch data is created by a separate tablet 1 or the like. It is also possible to create an embroidery pattern with high added value in combination with stitch data.

Further, the teaching embroidery machine 10 is designed to operate the moving frame 17 and the rotating frame 20 manually without providing a driving source or a rotating source on the moving frame 17 and the rotating frame 20. The weight can be reduced, and the operator can smoothly perform the teaching operation with a light operation. Then, the amount of movement of the moving frame 17 in the x-axis and y-axis directions can be detected with high accuracy using the tablet 22, and the quality of the embroidery pattern by the teaching operation can be improved.
Thereafter, the quality of the embroidery pattern reproduced by using the rotating zigzag sewing machine 46 or the like can be improved.

Further, if a mouse (not shown) is connected to the display 40 or the like, the position of the displayed embroidery pattern can be moved, or the embroidery pattern can be corrected by enlarging or reducing it. Further, the control unit 41 can transfer the converted stitch data N (ΔX, ΔY, θ, W) to the rotating zigzag sewing machine 46 or the like via a communication line or the like.

In the above-described embodiment, the teaching data C (Δx, Δy, θ ′, W) is converted into stitch data N (ΔX, ΔY, θ, W) based on the equations (10) to (15). As described above, for example, Ck (xk,
yk, .theta.k ', Wk)
The xy coordinate data (xk, yk) of k is actually

[0084]

(Equation 16) The stitch data N (ΔX,
ΔY, θ, W), for example, the difference value data (ΔXk, ΔYk) at the XY coordinates of the needle center Nk is calculated based on the equation (16) and the equations (10) to (15).

[0085]

ΔXk = Xk− (X0 + ΔX1 + ΔX2 +... + ΔXk−1) ΔYk = Yk− (Y0 + ΔY1 + ΔY2 +. It is preferable to perform the calculation so that the accumulated error when the value after the second decimal place is rounded off in the calculation is as small as possible.

In the above embodiment, the teaching work is performed by the teaching embroidery machine 10. However, the present invention is not limited to this, and a rotating zigzag sewing machine or the like conventionally used in the teaching work is taught. May be used as an embroidery machine.

Further, in the above embodiment, the stitch data N (ΔX, ΔY, θ, W) is stored in the floppy disk drive 4.
Although the description has been made on the assumption that the data is stored in the floppy disk by the data storage means such as No. 3, various data storage means such as a hard disk device may be employed instead.

[0088]

As described above in detail, according to the present invention, the teaching data C (Δ) generated by the teaching embroidery machine is used.
x, Δy, θ-θ0, W) stitch data N ([Delta] X of the needle center with respect to the frame center of the rotary frame and, ΔY, θ, is converted to W), the stitch data N (ΔX, ΔY, θ, W) and The stitch data N ([Delta] X, [Delta] Y, [theta], W) that allows the embroidery pattern to be enlarged, reduced or deformed without using a pattern creator or the like in a short time. The embroidery pattern based on the stitch data N ([Delta] X, [Delta] Y, [theta], W) can be easily created and reproduced with high quality using a zigzag sewing machine with rotation. The effect can be achieved, and various effects can be obtained, for example, the edited embroidery pattern can be repeatedly reproduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embroidery machine dedicated for teaching according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of FIG. 1 with a part of a head cut away.

FIG. 3 is an explanatory diagram showing a swing width of a needle shaft and an embroidery needle.

FIG. 4 is an enlarged view of the control panel shown in FIG.

FIG. 5 is a control block diagram illustrating a stitch data creation device according to an embodiment.

FIG. 6 is an explanatory view of a center of a frame, a center of a needle, and the like showing a state in which an embroidery pattern is created by teaching.

FIG. 7 is an explanatory diagram showing a state in which a rotating frame and a frame center are sequentially moved with respect to a needle center when an embroidery pattern is created by teaching.

FIG. 8 is an explanatory diagram of a frame center, a needle center, and the like showing a state in which an embroidery pattern is created by teaching.

FIG. 9 is an explanatory diagram showing the relationship between the center of the needle and the center of the frame.

FIG. 10 is an explanatory diagram showing stitch data written on a tape.

FIG. 11 is a control block diagram showing a zigzag sewing machine with rotation.

FIG. 12 is a front view showing a tablet according to the related art.

13 is an explanatory diagram of a needle center, a needle drop point, and the like, showing a part of the draft shown in FIG. 12 in an enlarged manner.

[Explanation of symbols]

 Reference Signs List 10 Embroidery machine dedicated for teaching 11 Base 14 Head 16 Embroidery needle 17 Moving frame 20 Rotating frame 21 Embroidery cloth 22 Tablet 25 Rotation sensor 26 Control lever 27 Swing width sensor 41 Control unit (teaching data creation means) 42 Conversion operation unit (Data conversion) Means) 43 Floppy disk drive (data storage means) 44 Punching device (data storage means) 46 Zigzag sewing machine with rotation N0 Start points N1, N2, N3, Nk Needle centers S0, S1, S2, S3, Sk Needle drop points C0, C1, C2, C3, Ck Frame center θ Rotation angle W Swing width

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) D05B 1/00-97/12 D05C 1/00-17/02

Claims (1)

(57) [Claims] 1. An embroidery cloth held in a state of being extended on a rotating frame is moved in the x-axis and y-axis directions while being manually rotated, and an embroidery needle is driven at a desired swing width to obtain a desired embroidery cloth. and the embroidery pattern teaching for the embroidery machine to create a, provided in the teaching for the embroidery machine, x of the embroidery cloth
Axis, y-axis direction moving amount (Δx, Δy), the rotational angle (theta) and the embroidering needle teaching data C ([Delta] x corresponding to the embroidery pattern consisting swing width (W) of, Δy, θ-θ0,
W) (where, .theta.0 is the initial rotation angle), and the teaching data creation means for creating a data frame center of the rotary frame relative to the needle center of the embroidery needle, teaching <br/> created by the teaching data creation means data C (Δx, Δy, θ- θ0, W) , and stitch data N becomes the data of the needle center of the embroidery needle with respect to the frame center of the rotary frame (ΔX, ΔY, θ, W ) and a data converting means for converting , stitch data N (delta that has been converted by said data conversion means
X, .DELTA.Y, .theta., W) .