JP2615937B2 - Embroidery data processing device - Google Patents

Description

The present invention relates to an embroidery data processing device for calculating a stitch point of an embroidery pattern.

[Related Art] In order to form an embroidery pattern in an automatic sewing machine, information on a stitch forming position representing each sewing point of the embroidery pattern is required. As an apparatus for processing such information in order to give it to an automatic sewing machine or the like, for example, as described in JP-B-60-42740,
The embroidery pattern is represented as a set of polygon blocks, and the position coordinates of the vertices of each block and the thread density of the stitch to be formed in the block are given. A device for calculating has been proposed.

[Problems to be Solved by the Invention] However, when a pattern is formed based on the sewing points calculated by such a conventional device, the boundary line Bl1 of each block becomes clear as illustrated in FIG. The pattern appeared, and depending on the embroidery pattern, it was inappropriate in some cases.
For example, when forming an embroidery pattern of a landscape, FIG.
In some cases, a pattern with a blurred boundary line is preferred as shown in FIG. 1, but there is a problem that such a pattern cannot be formed.

Therefore, conventionally, when forming a pattern in which the boundary line is blurred, information of all sewing points must be created, and there has been a problem that much labor is required. In particular, in the boundary line portion Bl between the blocks in FIG. 7B, the sewing points are complicated and complicated, and it is extremely difficult to obtain each point in advance.

Further, when it is desired to change the entering / exiting state of the boundary line, that is, when it is desired to change the way of blurring the boundary line, information on all the sewing points must be newly created, and the design cannot be changed quickly. There was also a problem.

Therefore, in order to provide an embroidery data processing device capable of forming a pattern in which a boundary line is blurred with a small amount of information, reducing the effort of creating information on stitches, and quickly changing a design, The present invention having the configuration has been made.

The embroidery data processing device of the present invention divides an embroidery pattern into two or more adjacent blocks as shown in FIG. An embroidery data processing device that calculates stitches so as to form stitches substantially parallel to the direction in which the blocks are arranged; a first storage unit M1 that stores side information that specifies a shape of a side of each block; A second storage unit M2 for storing thread density information of stitches to be formed in each block; and a predetermined side of a side at a boundary between blocks whose shape is specified based on the side information. Means for determining the entry / exit pattern of a sewing point as information indicating how to deviate the sewing point from the side.
Along M3 and a predetermined side specified by the side information,
A deviation sewing point calculating means M4 for calculating the number of sewing points according to the thread density information so that the side on which the in / out pattern is determined is a position deviating from the side in accordance with the in / out pattern. It is characterized by the following.

[Operation] In the embroidery data processing device of the present invention, the calculation of the sewing point is performed based on information representing the embroidery pattern as a set of two or more blocks.

The deviating stitch point calculating means M4, for each block, along the predetermined side specified by the side information of the block stored in the first storage means M1, the corresponding block stored in the second storage means M2 The number of stitches corresponding to the number of stitches determined by the thread density information is calculated according to the entry / exit pattern determined by the entry / exit pattern determining means M3 so as to be a position deviating from the side. Therefore, a sewing point is formed at a position deviating from the boundary of the block specified by the side information.

In the present invention, the respective pieces of information may be simultaneously provided to the calculating means M4 to directly calculate individual sewing points. Also,
For example, the sewing point may be calculated once based on the side information and the thread density information, and then the predetermined sewing point may be deviated from the boundary of the block based on the entering / exiting pattern.

Example Next, an example in which the present invention is embodied as an automatic embroidery sewing machine will be described in detail with reference to the drawings.

As shown in the block diagram of FIG. 2, the automatic embroidery sewing machine according to the embodiment moves the needle 5 provided on the sewing machine main body 4 up and down by moving a drive motor 3 for XY driving the embroidery frame 2 to which the cloth 1 is fixed. Sewing machine motor 6 for forming a stitch on
And an electronic control unit 7 for driving and controlling the sewing machine motor 6;
It comprises a storage device 8 for giving information on the embroidery pattern to the electronic control device 7 and a keyboard 9 for giving various supports to the electronic control device 7.

The electronic control unit 7 is a logical operation circuit mainly composed of a CPU 71, a ROM 72, and a RAM 73. The electronic control unit 7 reads pattern data from the storage device 8 via an input interface 74, and outputs a drive motor 3, a sewing machine motor via an output interface 75. 6 to send a control signal. Further, various instructions from the keyboard 9 are fetched through the input interface 74.

The storage device 8 stores the side information recording area 8a, as shown in FIG.
A thread density information storage area 8b and an in / out pattern storage area 8c are provided. For example, if the block is a rectangle, the side information storage area 8a stores, as information for specifying the side of the block, vertex positions A to D, which are purely left, right, top, and bottom, and each vertex position of the block is represented by a vector. Have been. In the thread density information storage area 8b, a thread density d representing the number of stitches formed per unit length on the center line in the stitch formation direction of the block is stored. In the entry / exit pattern storage area 8c, as entry / exit patterns, deviation side information I1, deviation direction information I2, maximum deviation rate I3,
The number of non-deviation stitches I4, the number of deviation stitches I5, and the deviation type I6 are stored.

Here, the deviated side information I1 is information indicating a side where a sewing point is to be moved in and out. When moving a sewing point in and out of the left side, I1 = L, a right side is I1 = R, and a left and right side is I1 = LR and so on are stored. The departure direction information I2 is information indicating the direction in which the sewing point deviates from the side, and is stored as I2 = Ou when deviating the sewing point to the outside of the block and I2 = In when deviating inward from the block. ing. The maximum deviation rate I3 represents the maximum deviation amount of the stitch point as a percentage with respect to the stitch length when no deviation is made. Number of non-deviation stitches I4, number of deviation stitches I5
And a deviation type I6 represents a reference unit of an in / out pattern when calculating a sewing point. For example, I4 = 3, I5 = 2 means that on the side specified by the deviation side information I1, the first three stitches are located on the side and the next two stitches are on the side. To deviate from The deviation type I6 represents the deviation rate corresponding to each sewing point in cooperation with the maximum deviation rate I3, and one of the predetermined deviation types stored in advance in the storage means 8 is instructed to be selected. It is for doing. For example,
I6 = N for a normal type where (deviation rate) = (maximum deviation rate), and I6 = W1 when changing the deviation rate in a sawtooth shape, and when setting a random deviation rate based on a random number table Stores I6 = Ra and the like.

Next, the stitch point calculation process executed by the electronic control unit 7 based on the pattern information having the above-described configuration will be described in the fourth step.
This will be described with reference to FIGS.

As shown in the sewing point calculation routine of FIG. 4A, first, the above-described information A to D, d, and I1 to I6 are read from the storage device 8 (step S1, hereinafter simply S1). Then, position coordinates A
ＤD, the midpoints M and N of the upper and lower sides AB and CD are calculated (S
2) The number of stitches Ln to be formed in the block is calculated from the length of the middle line MN and the thread density d (S3). In addition, when the stitch point deviation process is not performed from the inclination of the left and right sides AC and BD, the change amounts Δa and Δ of the position vectors of the stitch points calculated along each side.
b is calculated (S4). Next, the sewing point calculation side instruction flag F is set to the sewing start point side. For example, if the sewing start point is the upper left vertex A, F = L is set (S5), and various counters Kl, Jl, Kr, Jr are cleared (S5). S6). The numerical values of the counters Kl and Kr represent the number of calculated sewing points on each of the left and right sides, and the numerical values of the counters Jl and Jr represent how many times the in / out pattern in the reference unit has been calculated.

The subsequent processing is slightly different depending on whether the edge for calculating the sewing point is the left side or the right side. However, since the processing is almost the same, only the calculation on the left side will be described. It should be noted that the step numbers on the right side in the figure represent the same steps by adding an R to the step numbers on the left side.

If the process is on the left side (S7; YES), the counter Kl is incremented by 1 (S8), and a left sewing point calculation process (S9) as shown in FIG. After calculating the left sewing point, the flag F is changed to R in order to proceed to the next calculation (S10), and it is determined whether or not all calculations have been completed (S10).
11, S12). When it is determined that the operation on the left side has been completed,
That is, when it is determined that Jll (I4 + I5) + Kl = Ln is satisfied (S11; YES) and the calculation on the right side is also completed, ie, Kl +
If Kr = 2Ln holds (S12; YES), the sewing point calculation processing for the block is ended.

On the other hand, if the calculation of the sewing point on the left side has not been completed (S11; NO), it is determined whether or not the calculation of one entry / exit pattern has been completed, that is, whether or not Kl = I4 + I5 holds (S1).
3) If the calculation of one in / out pattern has not been completed yet, clear the counter Kl and set the counter Jl to the value 1
After only incrementing, the process returns to S7 (S14).

This time, the same process is performed for the right sewing point (S8R ~ S
14R), the calculation of the left and right sewing points is repeated alternately until Kl + Kr = 2Ln holds.

Next, the above-described left stitching point calculation processing (S9) will be described in detail.

As shown in FIG. 4 (b), first, the stitch point Plo in the case where the deviation processing is not performed is determined by adding the position vector of the vertex A and the variation Δa on the left side, Plo = A + Δaａ (Kl−1) + Jl (I4 + I5)｝ (S91). Next, whether or not it is instructed to deviate from the sewing point on the left side, that is, I1 = L or I1 = LR
Is determined (S92), and in the case of an affirmative determination, it is further determined whether or not the sewing point currently being calculated is a sewing point to be deviated, that is, whether or not I4 <Kl ≦ I4 + I5. (S93). If it is determined that the stitch point should be deviated (S92; YES and S93; YES), the deviation rate Rpo is calculated based on the maximum deviation rate I3, the deviation stitch number I5, and the deviation type I6 (S94). . For example, as shown in FIG.
0, I53 = 5, I63 = W1, and if Kl = 3, Rpo = 20 · (2/3) ≒ 13.3 by proportional calculation. Fig. 5 (d)
If I34 = 20, I54 = 999, I64 = Ra, ROM7
The deviation rate Rpo is calculated based on the random number table stored in 2.
Next, based on the calculated deviation rate Rpo, the final sewing point is calculated as Pl = Plo−Rpo · [Plo−B−Δb · {(Kl−1) + Jl · (I4 + I5)}] (S95) . On the other hand, when it is determined that the sewing point does not deviate (S92; NO or S93; NO), the final sewing point
Pl remains at the sewing point Plo obtained in S91 (S96).

Based on the sewing point Pl calculated as described above,
The drive motor 3 and the sewing machine motor 6 are controlled by ordinary sewing control.
To form a pattern with a blurred boundary line.

Here, the deviation information I1 in one square block
Fig. 5 (a)-(b)
Shown in

FIG. 5 (a) shows the outer side (I21 = Ou) at the left side (I11 = L) of the block, 20% of the stitch length (I31 = 20), and every other stitch (I41 = 1) , I51 = 1) An embroidery pattern is formed by deviating from a sewing point in a normal pattern (I61 = N). Similarly, FIG. 5 (b) shows the inner side (I22 = In) on the right side (I12 = R) of the block, 20% of the stitch length (I32 = 20), and every third stitch (I32 = 20) I42 = 3, I52 = 2)
An embroidery pattern is formed by deviating from a sewing point in a normal pattern (I62 = N). Fig. 5 (c) shows the outer side (I23 = Ou) on the left side (I13 = L) of the block, with the maximum of 20% of the stitch length (I33 = 20), and every other five stitches (I43 = 1, I53 = 5) An embroidery pattern is formed by deviating from a sewing point in a sawtooth pattern (I63 = W1). Further, FIG. 5 (d) shows that the stitch length of 20% is maximized outward (I24 = Ou) on the left and right sides (I14 = LR) of the block (I34 =
20) Except for the first one (I44 = 1, I54 = 999), the embroidery pattern is formed by deviating from the sewing point by a random pattern (I64 = Ra).

Therefore, for example, from only 33 pieces of information as shown in FIG. 6 (a), it is composed of three adjacent blocks as shown in FIG. 6 (b), and the boundary line of each block clearly appears. No embroidery pattern of French flag can be formed.

As described above, according to the present embodiment, the boundary line information, the thread density information, and the entry / exit pattern information can be used to determine the boundary line without creating information for all the sewing points, without having to create information on the embroidery pattern. Can be formed. Therefore, even if the pattern has a blurred boundary line, the creation of sewing point information is extremely easy, and a great deal of labor is not required for information creation. Further, as illustrated in FIGS. 5 (a) to 5 (d), even if the vertex positions A to D and the yarn density d, which are the side information, are the same, the combination of the information I1 to I6 regarding the in / out pattern is used. A pattern with a blurred boundary can be expressed in various forms. Similarly, changing only the thread density d results in a different embroidery pattern. That is, such an effect is produced by expressing the embroidery pattern by combining independent and specific information.

Therefore, by changing any of the information d, I1 to I6, it is possible to create information corresponding to various types of boundary line patterns for the same block. That is, the embroidery pattern design can be changed quickly with a minimum amount of work by changing only the information of the necessary parts.

In particular, by calculating the deviation rate from the maximum deviation rate I3, the number of deviation stitches I5, and the deviation type I6, in addition to the pattern shown in the embodiment, for example, a pattern in which the stitching points enter and exit in a sine wave shape Can be easily formed.

Although the embodiment of the present invention has been described above, the present invention is not limited to this. For example, a configuration in which a block is divided into a quadrangle and operated by using a triangle or the like, or a curved side using data such as curvature is used. Such as a configuration that operates with a block having
Various modes can be adopted without departing from the gist thereof.

Advantageous Effects of the Invention According to the present invention, by using each characteristic information such as side information for specifying the shape of the side of a block, thread density information, and an in / out pattern, a boundary is obtained despite a very simple and small combination of information. Various blurred patterns can be formed. These pieces of information are independent information, and the combination can be easily changed. Therefore, not only the labor for creating the sewing point information can be reduced, but also it is possible to quickly respond to a change in the design of the pattern.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating the configuration of the present invention, FIG. 2 is a block diagram illustrating the configuration of an embodiment, FIG. 3 is an explanatory diagram illustrating the configuration of information stored in storage means of the embodiment, FIG. (A) and (B) are flow charts showing the procedure of the sewing point calculation of the embodiment, FIGS. 5 (A) to (D) are explanatory diagrams showing a specific example of an in / out pattern and an embroidery pattern formed based on the same.
FIG. 6A is an explanatory view showing information for forming an embroidery pattern of a French flag, FIG. 6B is an explanatory view of an embroidery pattern formed based on the information, and FIG. Explanatory drawing illustrating a landscape pattern formed by an example, FIG. 7 (b)
FIG. 4 is an explanatory diagram illustrating a blurred pattern of a boundary line. M1... First storage means, M2... Second storage means M3... In / out pattern determination means, M4... Deviation stitch point calculation means 1... Cloth, 2... Embroidery frame, 3. ... sewing machine body, 5 ... needle, 6 ... sewing machine motor 7 ... electronic control device, 8 ... storage device 8a ... side information storage area 8b ... thread density information storage area 8c ... entry / exit pattern storage area 9 ……keyboard

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Masaaki Yokoe 9-35, Hotitadori, Mizuho-ku, Nagoya-shi, Aichi Inside Brother Industries, Ltd. (56) References JP-A-63-139592 (JP, A)

Claims (1)

(57) [Claims] 1. An embroidery data processing apparatus for dividing an embroidery pattern into two or more adjacent blocks and calculating stitch points for each block so as to form stitches substantially parallel to the direction in which the blocks are arranged. A first storage unit that stores side information that specifies a shape of a side of each block; a second storage unit that stores thread density information of a stitch to be formed in each block; Outgoing / incoming pattern determination for determining an in / out pattern of a stitching point as information indicating how to deviate a stitching point from a predetermined side of a side at a boundary between blocks whose shapes are specified. Means, along a predetermined side specified by the side information, a number of sewing points according to the thread density information, and for a side for which the in / out pattern is determined, deviated from the side in accordance with the in / out pattern. An embroidery data processing device, comprising: deviating stitch point calculating means for calculating a position to be a position.