JP2009201537A - Sewing machine capable of performing embroidering - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sewing machine capable of performing embroidering which can provide a smooth tracing operation. <P>SOLUTION: A trace line 21 is in a square shape surrounding an embroidery pattern 20 larger than the outer shape line (contour line) of the embroidery pattern 20, and a boundary line determining device 3 determines whether or not the trace line 21 is within a boundary line 11. When the boundary line determining device 3 determines that at least a part of the trace line 21 is on the outer side of the boundary line 11, an allowable range line 12 is set by an allowable range setting device 4, and whether or not the embroidery pattern 20 is settled within the allowable range line 12 is determined by an allowable range determining device 5. When it is settled, trace is made possible. <P>COPYRIGHT: (C)2009,JPO&INPIT

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 sewing machine capable of embroidery sewing, a boundary line determination device for determining whether or not the trace line is within a predetermined boundary line based on the embroidery possible range, and a device for setting a predetermined allowable range within the boundary line And an allowable range determination device that determines whether or not the shape to be sewn embroidery is within the set predetermined allowable range, and the trace line is within the boundary line by the boundary line determination device. When it is determined that the shape is to be sewn by the allowable range determination device, the allowable range determination device determines whether or not the shape to be embroidery is within the set predetermined allowable range. The features.
With the above configuration, when the trace line protrudes outside the boundary line, it is determined whether or not the shape to be sewn within the permissible range set inside the boundary line is within the allowable range. It is possible to confirm that the shape to be sewn is surely located inside the boundary line. If trace is executed after this confirmation, a safer trace becomes possible. Therefore, safe and effective tracing can be performed even if a trace line having a simple shape such as a square is used.
The apparatus for setting the allowable range can be configured to set the allowable range when the boundary line determination device determines that the trace line is not within the boundary line. The apparatus for setting the allowable range may be configured to set the allowable range based on the boundary line and the coordinates of the shape to be embroidered, or a predetermined position determined in advance from the boundary line. It is also possible to configure so that an allowable range is set.
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 outside the boundary line, it is determined whether or not the shape to be embroidery sewed is within the allowable range set inside the boundary line. It can be confirmed that the shape to be surely exists inside the boundary line. Since the trace is executed after this confirmation, an efficient and safe trace is possible. Therefore, even if the trace line has a simple shape such as a quadrangle or goes out of the boundary line, the trace is executed after confirming the safety. It 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 when a part or all of the trace line 21 extends outside the boundary line 11, There is a possibility that the needle mechanism 6 and the embroidery frame 10 collide during the tracing operation, and it is determined that the tracing operation is impossible. The embroidery frame 10 is an embroidery range and is concentric with the boundary line 11.

The allowable range setting device 4 sets an allowable range and sets an allowable range line 12 indicating the range. The tolerance line 12 is set inside the boundary line 11.
This setting is performed when the boundary line determination device 3 determines that at least a part of the trace line 21 is outside the boundary line 11.

  The allowable range determination device 5 determines whether or not the pattern to be embroidered is within the allowable range line 12 set by the allowable range setting device 4, that is, the pattern to be embroidered outside the allowable range line 12 (boundary line 11 side). It is determined whether a part or all of it does not protrude. If the pattern to be embroidered is within the allowable range line 12 by this determination, it can be confirmed that the pattern to be embroidered is surely inside the boundary line 11, so that the trace operation can be executed safely.

The setting operation of the allowable range line 12 by the allowable range setting device 4 will be described.
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. If 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 inside the boundary line 11.
The permissible range determination device 5 determines whether or not the embroidery pattern 20 fits inside the permissible range line 12, and if it is determined that it fits, determines that it has been confirmed that it can be safely traced, and performs tracing. Make it possible.

There are various methods for setting the tolerance line 12 in the tolerance 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 nearest to the point b are connected by a straight line L, and the intersection point Y of the boundary line 11 and the point b of L The distance is D. Then, a point Z with a distance D is set from the intersection Y to the inner side of the boundary line 11, 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.

  In the example shown 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 to obtain the intersection Y of L and the boundary line 11. Let D be the distance between Y1 and point b. Then, a perpendicular line is drawn from the point X of the embroidery pattern 20 closest to the point b to the boundary line 11 to obtain an intersection point Y2, and a point Z of a distance D is set from the intersection point Y2 to the inner side of the boundary line 11, and the point Z is A circle concentric with the passing boundary line 11 is set, and this is set as an allowable range line 12.

  In the example shown in FIG. 5, an intersection point Y1 where a straight line L1 connecting the point b of the trace line 21 protruding from the boundary line 11 and the embroidery frame 10 or the center O of the boundary line intersects the boundary line 11 is obtained. Is a distance D. Then, an intersection Y2 between the straight line L2 connecting the center O and the point b to the point X of the nearest embroidery pattern 20 and the boundary line 11 is obtained, and a point Z having a distance D is set from the intersection Y2 to the inner side of the boundary line 11. Then, a circle centered on the center O passing through the point Z is set, and this is set as the allowable range line 12.

  In the example shown in FIG. 6, when the point b of the trace line 21 protrudes from the boundary line 11, a circle concentric with the boundary line 11 is set at a position of a predetermined distance D from the boundary line 11, and this is set as an allowable range line. 12 and so on.

  FIG. 7 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 tolerance range setting device 4 sets the tolerance range line 12 inside the boundary line 11. Similarly, the allowable range determination device 5 determines whether or not the embroidery pattern 20 is inside the allowable range line 12, and if it is determined to be inside, the embroidery pattern 20 is surely inside the boundary line 11. Therefore, it is possible to execute the trace operation safely.

  FIG. 8 shows a method for setting the allowable range line 12. This example is the same as the method of FIG. 3 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 are connected. Let D be the distance between the intersection point Y and the point b. Then, a point Z having a distance D is set from the intersection Y to the inner side of the boundary line 11, 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. 9 is the same method as that shown in FIG. 6. When the point b of the trace line 21 protrudes from the boundary line 11, it is parallel to the boundary line 11 at a predetermined distance D inside the boundary line 11. A frame is set, and this is set as an allowable range line 12.

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 falls within the boundary line 11, the trace is executed (step S11).
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). Then, the allowable range determination device 5 checks the coordinates closest to the protruding trace point in the coordinates of the embroidery pattern 20, and determines whether this coordinate is inside the allowable range line 12 (step S8). If it is not inside, the operation is terminated. If it is determined that it falls within the allowable range line 12, the same determination is performed for other stitch coordinates, and if all the stitch coordinates of the embroidery pattern 20 are determined to be within the allowable range line 12 (step S9, S10), 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. 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, 20: embroidery pattern, 21: trace line, 40: control program storage device, 41: interface, 50: operation buttons, 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 (6)

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 tolerance within the boundary;
An allowable range determination device for determining whether or not the shape to be sewn embroidery is within the set predetermined allowable range,
Whether or not the shape to be sewn by embroidery is within the set predetermined allowable range by the allowable range determining device when the boundary line determining device determines that the trace line is not within the boundary line Judge and execute trace when it is decided that it will fit.
An embroidery sewing machine characterized by that. The apparatus for setting the allowable range sets the allowable range when the boundary line determination device determines that the trace line is not within the boundary line,
The embroidery sewing machine according to claim 1. The apparatus for setting the allowable range sets the allowable range based on the boundary line and the coordinates of the shape to be embroidery stitched;
The embroidery sewing machine according to claim 1. The apparatus for setting the allowable range sets the allowable range at a predetermined position predetermined from the boundary line;
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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