JP5507052B2 - Sewing machine that can embroidery - Google Patents

Description

  The present invention relates to an embroidery sewing machine equipped with a tracing device.

In sewing machines that can be sewn with embroidery, pre-prepared patterns or newly created embroidery patterns such as characters and shapes must be within the size range of the embroidery frame. It is determined whether the size of the pattern can be embroidered.
In addition to such determinations, sewing machines having a function called a trace function have become widespread. The trace function is a function that allows the user to roughly grasp the embroidery position and size in advance by moving the embroidery frame in accordance with the embroidery pattern (trace) before performing embroidery sewing. There is also an advantage that it can be actually confirmed that the needle and the embroidery frame do not collide.
Ideally, the trace line to be traced should be the outline of the embroidery pattern (contour line). However, the outline has a lot of bending, so the direction is changed, the curve is large, and the overall length is long. There is a problem that the time required for tracing becomes long. In addition, there is a drawback that the data processing time and the data amount for obtaining the trace line increase.
Therefore, tracing is usually performed by setting a simple trace line such as a quadrangle larger than the outline of the embroidery pattern.

Japanese Patent Publication No. 5-61954 Japanese Examined Patent Publication No. 3-67436

However, when a simple trace line such as the above-described quadrangular shape is used, the trace line may not be within the embroidery range although the embroidery pattern itself is within the embroidery frame range. In this case, since the needle mechanism and the embroidery frame collide during tracing, processing that cannot be traced is performed. In addition, when it is impossible to trace, there are also many configurations that are controlled so that the sewing operation itself cannot be performed for safety, because the trace line goes out of range even though it is actually an embroidery pattern that can be sewn There is a problem that makes sewing impossible.
The object of the present invention is to solve the problems of the prior art.

In order to achieve the above object, an embroidery-sewing machine according to the present invention includes a tracing device that relatively moves an embroidery frame and a needle along a trace line that is larger than an outline of a shape to be embroidery sewn. In a embroidery sewing machine, a boundary line determination device that determines whether or not the trace line is within a predetermined boundary line based on an embroidery range, and the boundary line determination device causes the trace line to be A device that sets a predetermined tolerance line within the embroidery range and outside the boundary line when it is determined that it is not within the line, and a limit range within which the tolerance line must not move the needle mechanism. It is determined whether or not it is inside the limit range line to be determined, and if it is not inside, the limit line is set as a new allowable range line, and the trace line is within the boundary line by the boundary line determination device. Absent And an allowable range determination device that determines whether the trace line is within the set predetermined allowable range line when the determination is made, wherein the trace line is set by the allowable range determination device. When it is determined that the value is within the allowable range line , tracing is performed.
With the above configuration, when the trace line protrudes outside the boundary line, it is determined whether or not the trace line is within the allowable range line set outside the boundary line, and the trace can be executed based on the result. Therefore, effective tracing can be performed even using a trace line having a simple shape such as a quadrangular shape.
The apparatus for setting the allowable range line can be configured to set the allowable range line based on the boundary line and the coordinates of the shape to be embroidery sewn. The apparatus for setting the allowable range line may be configured to set the allowable range line within a predetermined range between the boundary line and the embroidery range.
The trace line is preferably a square larger than the shape to be embroidered. It is desirable that the apparatus further includes a device that generates the trace line based on the shape to be embroidered.

  According to the sewing machine capable of embroidery sewing according to the present invention, when the trace line goes out of the boundary line, it is determined whether it is within the allowable range set within the embroidery range and outside the boundary line, and is within the allowable range. Sometimes tracing is performed. Therefore, a smooth trace operation can be obtained, and even if the trace line has a simple shape, if it goes outside the boundary line, the trace is executed based on whether or not it is within the allowable range outside it. A complicated trace line along the contour of the pattern becomes unnecessary. Also, the number of types of trace lines to be prepared is small, and the selection of trace lines becomes easy.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a sewing machine equipped with an embroidery device, and performs various controls according to programs stored in the control device 1 and the control program storage device 40 or commands from the operation buttons 50.
The control device 1 controls the drive driver 60 via the interface 41, drives the X motor 61 and the Y motor 62 to move the embroidery frame 10 in the XY direction, and simultaneously controls the motor driver 65 via the motor 66. The needle mechanism 6 is driven to perform embroidery sewing.
63 is an XY position sensor, 64 is an upper shaft sensor, 67 is a needle position sensor, 51 is an LCD controller, and 52 is an LCD.

Further connected to the control device 1 are a trace line generation device 2, a boundary line determination device 3, an allowable range setting device 4, and an allowable range determination device 5.
As shown in FIG. 2, the trace line generation device 2 generates a trace line 21 larger than the outline (contour line) of the embroidery pattern 20. In this embodiment, it has a quadrangular shape surrounding the embroidery pattern 20. Instead of the trace line generating device 2, it is also possible to prepare the data of the trace line 21 in advance.

  The boundary line determination device 3 determines whether or not the trace line 21 is within the boundary line 11. As shown in FIG. 2, the boundary line 11 is set on the inner side of the embroidery frame 10 based on the embroidery frame 10, and the inner side of the boundary line 11 is a normal safety range. If part or all of the extension is extended, it is determined that the tracing operation is impossible.

  The permissible range setting device 4 sets a permissible range and sets a permissible range line 12 indicating the range when the boundary line determination device 3 determines that at least a part of the trace line 21 is outside the boundary line 11. And make it traceable. The allowable range line 12 is set outside the boundary line 11 and inside the limit range line 15. The limit range line 15 is an absolute limit line set inside the embroidery frame 10, and if the needle mechanism 6 comes outside the limit range line 15, the risk of collision with the embroidery frame 10 becomes extremely high. The limit range in which the needle mechanism 6 should not be moved inside the limit range line 15 is determined.

As shown in FIGS. 2A and 2B, it is assumed that the square trace line 21 has four points abcd, and the point b protrudes outside the boundary line 11 as shown. When the boundary line determination device 3 determines that the point b is outside the boundary line 11, the allowable range setting device 4 sets the allowable range line 12 between the embroidery frame 10 and the boundary line 11.
The allowable range determination device 5 determines whether or not the set allowable range line 12 is inside the limit range line 15. If the allowable range line 12 is not inside, the limit range line 15 is set as the allowable range line 12.
When the set allowable range line 12 is inside the limit range line 15 or when the limit range line 15 is set as the allowable range line 12, the allowable range determination device 5 further causes the trace line 21 to be inside the allowable range line 12. It is determined whether or not there is a trace line 21. If it is determined that the trace line 21 is inside, the trace line 21 is regarded as being within the boundary line 11 to enable tracing.

There are various methods for setting the boundary line 11 in the allowable range setting device 4, and an example will be described.
As shown in FIG. 3, the point b of the trace line 21 protruding from the boundary line 11 and the point X of the embroidery pattern 20 closest to the point b are connected by a straight line L, and the distance D is obtained. Then, a point Z having a distance D from the intersection Y of L and the boundary line 11 is set, and an allowable range line 12 passing through this point Z is set. The tolerance line 12 is a circle concentric with the boundary line 11.

  In FIG. 4, the point b of the trace line 21 protruding from the boundary line 11 and the point X of the embroidery pattern 20 nearest to the point b are connected by a straight line L, and the distance between the intersection point Y of L and the boundary line 11 and the point X. Is D ′. Then, a point Z having a distance D ′ from the intersection point Y is set, and an allowable range line 12 passing through the point Z is set. The tolerance line 12 is a circle concentric with the boundary line 11 as in the example of FIG.

  In the example shown in FIG. 5, a perpendicular line is drawn from the b point of the trace line 21 protruding from the boundary line 11 to the boundary line 11 to obtain an intersection point Y, and a point Z of a predetermined distance D ″ from the intersection point Y is set. , A circle concentric with the boundary line 11 passing through the point Z is set as an allowable range line 12.

FIG. 6 shows a case where the embroidery frame is a quadrangular shape and the embroidery frame 10 and the boundary line 11 are a quadrangular shape. Similarly, the quadrangular trace line 21 has four points abcd, and the point b protrudes outside the boundary line 11 as shown in the figure, and the boundary line determination device 3 determines that the point b is outside the boundary line 11. If it is determined that there is, the allowable range setting device 4 sets the allowable range line 12 between the embroidery frame 10 and the boundary line 11.
Similarly, the permissible range determination device 5 determines whether or not the set permissible range line 12 is inside the limit range line 15, and if not, sets the limit range line 15 as the permissible range line 12. . When the set allowable range line 12 is inside the limit range line 15 or when the limit range line 15 is set as the allowable range line 12, the allowable range determination device 5 further causes the trace line 21 to be inside the allowable range line 12. It is determined whether or not there is a trace line 21. If it is determined that the trace line 21 is inside, the trace line 21 is regarded as being within the boundary line 11 to enable tracing.

  FIG. 7 shows a method for setting the allowable range line 12. This example is the same as the method of FIG. 4 described above, and the point b of the trace line 21 protruding from the boundary line 11 and the point X of the embroidery pattern 20 nearest to the point b are connected by a straight line L, and L and the boundary line 11 The distance between the intersection point Y and the point X is D ′. Then, a point Z having a distance D ′ from the intersection point Y is set, and an allowable range line 12 passing through the point Z is set. The tolerance line 12 is a line parallel to one side of the boundary line 11.

  FIG. 8 is the same method as that shown in FIG. 5. A perpendicular is drawn from the point b of the trace line 21 protruding from the boundary line 11 to the boundary line 11 to obtain the intersection point Y, and a predetermined distance from the intersection point Y is obtained. A point Z of D ″ is set, and an allowable range line 12 passing through the point Z is set. This allowable range line 12 is parallel to the side of the boundary line 11.

  When the allowable range line 12 is set by the allowable range setting device 4, the allowable range determination device 5 determines whether the set allowable range line 12 is inside the limit range line 15. The limit range line 15 is set as the allowable range line 12. When the set allowable range line 12 is inside the limit range line 15 or when the limit range line 15 is set as the allowable range line 12, the allowable range determination device 5 determines whether the trace line 21 is within the allowable range line 12. Determine whether. If the determination shows that the trace line 21 is within the allowable range line 12, the trace operation is executed.

The operation will be described with reference to FIG.
The control device 1 acquires frame information of the embroidery frame 10 (step S1), and reads boundary line 11 information corresponding to the embroidery frame 10 (step S2). Then, data of the pattern to be embroidered is acquired (step S3), and it is confirmed whether or not the stitch coordinates of the pattern are within the boundary line 11 (step S4).

  Then, the coordinates of the trace line 21 generated by the trace line generation device 2 and read from others are acquired (step S5), and whether or not each coordinate of the trace line 21 falls within the boundary line 11 in the boundary line determination device 3. Is determined (step S6). If the trace line 21 is within the boundary line 11, tracing is executed (step S9). When the trace line 21 does not fit on the boundary line 11, the allowable range line 12 is set by the allowable range setting device 4 (step S7).

  Next, the allowable range determination device 5 determines whether or not the set allowable range line 12 is inside the limit range line 15 (step S8). (Step S9). When the set allowable range line 12 is inside the limit range line 15 or when the limit range line 15 is set as the allowable range line 12, the allowable range determination device 5 determines whether the coordinates of the trace line 21 are within the allowable range line 12. It is determined whether or not (step S10), and if it is determined that it fits, tracing is executed (step S11).

The block diagram which shows one Embodiment of this invention. Explanatory drawing which shows operation | movement of one Embodiment of this invention. Explanatory drawing which shows operation | movement of one Embodiment of this invention. Explanatory drawing which shows operation | movement of one Embodiment of this invention. Explanatory drawing which shows operation | movement of one Embodiment of this invention. Explanatory drawing which shows operation | movement of other embodiment of this invention. Explanatory drawing which shows operation | movement of other embodiment of this invention. Explanatory drawing which shows operation | movement of other embodiment of this invention. The flowchart figure which shows operation | movement of one Embodiment of this invention.

Explanation of symbols

1: control device, 2: trace line generation device, 3: boundary line determination device, 4: allowable range setting device, 5: allowable range determination device, 6: needle mechanism, 10: embroidery frame, 11: boundary line, 12: Tolerance line, 15: limit line, 20: embroidery pattern, 21: trace line, 40: control program storage device, 41: interface, 50: operation button, 51: LCD controller, 52: LCD, 53: pattern storage device , 60: drive driver, 61: X motor, 62: Y motor, 63: XY position sensor, 64: upper shaft sensor, 65: motor driver, 66: motor, 67: needle position sensor.

Claims (5)

In a sewing machine capable of embroidery sewing having a tracing device for relatively moving an embroidery frame and a needle along a trace line larger than an outline of a shape to be embroidery sewn,
A boundary line determination device for determining whether or not the trace line is within a predetermined boundary line based on an embroiderable range;
An apparatus for setting a predetermined allowable range line within the embroidery range and outside the boundary line when the boundary line determination device determines that the trace line is not within the boundary line;
A device that determines whether or not the tolerance line is inside a limit range line that defines a limit range in which the needle mechanism should not be moved, and sets the limit range line as a new tolerance line if it is not inside; ,
When the boundary line determination device determines that the trace line is not within the boundary line, an allowable range determination device that determines whether the trace line is within the set predetermined allowable range line; With
When the tolerance determination device determines that the trace line is within the set predetermined tolerance line , tracing is performed.
An embroidery sewing machine characterized by that. The apparatus for setting the allowable range line sets the allowable range line based on the coordinates of the boundary line and the shape to be embroidery sewn;
The embroidery sewing machine according to claim 1. The apparatus for setting the allowable range line sets the allowable range line in a predetermined range between the boundary line and the embroidery range;
The embroidery sewing machine according to claim 1. The trace lines form a larger square than the shape to be embroidered;
The embroidery sewing machine according to claim 1. The embroidery-sewing machine according to claim 1, further comprising a device for generating the trace line based on the shape to be embroidered.

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