JPH078651A - Embroidering method in enbroidery sewing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an embroidery method for an embroidery sewing machine, which enables a user to check the position in a hoop where a selected pattern is sewn by a simple method. The effective sewing areas Xmax and Ymax are obtained from the hoop attached to the sewing machine, and the maximum lengths of the selected embroidery pattern M in the X and Y directions are obtained. The embroidery frame 4 is moved by a predetermined amount based on the sewing area and the lengths of the embroidery pattern in the X and Y directions obtained from the condition that the needle position is at the center O2 of the hoop so that the needle position is at O1, that is, the start position. Move the hoop to. The operator confirms the position at that time from the index I provided on the hoop to determine the size of the embroidery pattern to be sewn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery method in an embroidery sewing machine, and more particularly, to select an embroidery pattern stored in an external memory which is detachably attached to the sewing machine and corresponds to the selected embroidery pattern. The present invention relates to an embroidery method in an embroidery sewing machine that moves an embroidery frame with respect to the sewing machine main body in accordance with the sewing data to sew an embroidery pattern corresponding to the sewing data on the cloth held by the embroidery frame.

[0002]

2. Description of the Related Art Conventionally, there has been known an automatic embroidery sewing machine in which an embroidery machine is attached to a sewing machine main body and an embroidery frame holding a cloth is set to perform sewing. In such an automatic embroidery machine, the embroidery data stored in advance in an external memory (for example, a memory card) is read out, and the embroidery frame is moved in the X and Y directions by a stepping motor to create various patterns such as complicated sewing lines and embroidery. Is being sewn. In that case, an embroidery sewing machine is known in which the embroidery data (embroidery pattern) can be arbitrarily changed by exchanging the memory card (Japanese Patent Laid-Open No. 64-37992), and such an embroidery sewing machine has recently become popular as a household sewing machine. ing.

In this case, the embroidery frame mounted has a predetermined sewing area defined by the frame, and therefore, when the embroidery data stored in the external memory has a size exceeding the area, There is a problem in that the hoop will not collide with the sewing machine needle or its presser foot, resulting in damage to the needle or presser foot. In order to solve this, for example, in Japanese Unexamined Patent Publication No. 1-213455, the type of the hoop is detected, the sewing area is displayed on the screen of the embroidery data input device and compared with the size of the sewing data. Further, Japanese Patent Publication No. 3-67436 describes an embroidery sewing machine capable of confirming the formation position and size of a sewing pattern prior to actual sewing. However, these conventional techniques have a drawback in that a display device such as an LCD is required and the cost is increased.

In an example where the cost is low, the template in which the pattern is drawn or the size of the pattern is described in a manual (for example, X direction = what mm, Y direction = what mm).
Etc.), but in the case of the template method, if there are many patterns, there is a problem that as many templates are required, and in the case of a manual,
The drawback is that the dimensions of the pattern must actually be associated with the reading hoop.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is an embroidery sewing machine capable of confirming a position in a hoop where a selected pattern is sewn by a simple method. To provide an embroidery method in.

[0006]

In order to solve this problem, the present invention selects an embroidery pattern stored in a memory and sets an embroidery frame on a sewing machine main body in accordance with sewing data corresponding to the selected embroidery pattern. In the embroidery method of the embroidery sewing machine, in which the embroidery pattern corresponding to the sewing data is sewn on the cloth held in the embroidery frame by moving the cloth, the maximum lengths in the X and Y directions of the selected embroidery pattern are obtained. The X and Y of the embroidery pattern obtained from the state that the position is in the center of the hoop
The sewing machine starts sewing after moving the hoops by about 1/2 of the maximum length in each direction.

[0007]

In such a structure, the maximum X of the selected embroidery pattern is selected from the position where the needle is at the center of the hoop,
Move to a position of about 1/2 of the length in the Y direction. The operator can easily confirm the size of the embroidery pattern to be sewn from the position at that time in relation to the hoop.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings.

The embroidery sewing machine shown in FIG. 1 is realized by setting a detachable embroidery machine 2 on the sewing machine main body 1. In such an embroidery sewing machine, the embroidery frames 4 of various sizes holding the cloth 3 can be detachably set on the embroidery machine 2 by inserting it into the insertion opening 2a of the embroidery machine as shown in FIG. . The embroidery frame 4 is moved in the X and Y directions by a stepping motor with respect to the sewing machine needle 6 in accordance with the embroidery data stored in an external memory (for example, a memory card) 5 which is detachably attached to the insertion opening of the sewing machine main body. The embroidery pattern is designed to be sewn. In that case, the external memory 5
The embroidery pattern can be arbitrarily changed by exchanging, and the embroidery pattern can be displayed on the display device 8. Note that the reference numeral 7 is a presser foot, and the cloth held by the hoop 4 is pressed by the presser foot during sewing to ensure reliable sewing.

FIG. 3 is a block diagram for controlling the operation of the embroidery sewing machine. In FIG. 3, the control device 10 is composed of a microcomputer, a ROM, a RAM, an I / O port, etc. Control The control device 10 receives signals from a pattern selection switch 11, a memory (memory card) 12 in which sewing data for embroidery patterns is stored, a frame detection sensor 13, and a spindle sensor 14, and the embroidery machine 2 receives X, A signal is supplied to a motor (stepping motor) for moving in the Y direction and a main motor 17 of the sewing machine main body. The memory 12 (corresponding to 5 in FIG. 1) can be attached to and detached from the sewing machine main body, and the operator can select one of the plurality of patterns stored in the memory via the pattern selection switch. The frame detection sensor 12 is a sensor that identifies the embroidery frame 4 that is mounted and detects its size. The spindle sensor 14 can detect the height of the needle 6 by detecting the rotation phase of the spindle that is interlocked with the main motor 17.

In the embroidery sewing machine thus constructed, the operator of the sewing machine selects the embroidery frame 4 and the memory 2 and mounts them on the sewing machine. As shown in step S1 of FIG. 4, when it is determined that the hoop is attached, the effective sewing area 4a defined by the hoop is determined in step S2. This is Xmax in Fig. 5,
It is shown by the alternate long and short dash line defined by Ymax.

Next, in step S3, the pattern selection switch 11
The pattern M is selected by. At that time, the control device reads the maximum sizes X and Y of the pattern M based on the sewing data in the memory (step S4). Then, in step S5, (Xmax-X) / 2 and (Ymax-Y) / 2 are calculated. This value corresponds to the position of the point O1 based on the origin position O. In the normal embroidery sewing machine, the needle is moved to the position (the position in FIG. 5) which coincides with the center O2 of the embroidery frame after the origin is detected. Therefore, when the stepping motors 15 and 16 are driven by the calculated amount, the needle position is embroidered. It will move from O2 to the start position of O1 with respect to the frame. At this time, the operator can visually check the index I provided on the hoop to check the overall size of the pattern M to be sewn in association with the hoop 4. The means for obtaining the maximum X and Y values of the embroidery pattern, and the maximum X and Y values of the pattern for the embroidery frame are 1
The means for obtaining the position of / 2 includes various means within a range in which the gist of the present invention can be realized.

[0013]

As described above, according to the present invention, the embroidery frame is moved from the state in which the needle position is at the center of the hoop based on approximately half the maximum length in the X and Y directions of the embroidery pattern. Since the sewing is started after the start, the operator can easily confirm the size of the embroidery pattern to be sewn in relation to the hoop.

[Brief description of drawings]

FIG. 1 is a perspective view showing the appearance of an embroidery sewing machine.

FIG. 2 is a perspective view showing a configuration of a main part of an embroidery sewing machine.

FIG. 3 is a block diagram showing a configuration of a control circuit of the embroidery sewing machine.

FIG. 4 is a flowchart illustrating an operation flow.

FIG. 5 is an explanatory diagram showing the positional relationship between the embroidery pattern and the hoop.

[Explanation of symbols]

 2 Embroidery machine 4 Embroidery frame 5 Memory card 6 Needle 7 Presser foot

Claims (2)

[Claims] 1. An embroidery pattern stored in a memory is selected, and the embroidery frame is moved with respect to the sewing machine main body in accordance with the sewing data corresponding to the selected embroidery pattern. In the embroidery method for an embroidery sewing machine that sewes an embroidery pattern corresponding to the data, finds the maximum length in the X and Y directions of the selected embroidery pattern, and obtains the embroidery pattern obtained from the state where the needle position is at the center of the hoop. An embroidering method for an embroidery sewing machine, characterized in that the embroidery frame is moved by about 1/2 of the maximum length in the X and Y directions, and then sewing is started. 2. The embroidery method for an embroidery sewing machine according to claim 1, wherein an index is provided on the hoop.