JP3224636B2 - A sewing machine with a function to align the work cloth and the embroidery frame. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery sewing machine for embroidering a work cloth held by an embroidery frame.

[0002]

2. Description of the Related Art Conventionally, in such an embroidery sewing machine, in order to see the finished embroidery, to remove a work cloth from an embroidery frame, or to cause the work cloth to be caught on something during sewing. When the work cloth is separated from the embroidery frame due to the user misaligning the embroidery frame when changing the thread, the work cloth is attached to the embroidery frame without any reference based on the user's feeling. It is configured to be.
The embroidery pattern is formed so as to be formed in a predetermined direction with respect to the embroidery frame.

[0003]

[SUMMARY OF THE INVENTION However, when the embroidery frame and the work cloth will be once separated, already so that embroidery portion in the same direction of sewing and after the embroidery portion is sewn, again embroidery frame It is very difficult to attach a work cloth to a work piece. Since the embroidery sewing machine performs embroidery in a predetermined direction irrespective of the already sewn part, there is a problem that the embroidery part which is already sewn and the embroidery part to be sewn later may be shifted.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. Even if the work cloth and the embroidery frame are separated, the desired position of the work cloth on the embroidery frame is again determined.
And to provide an alignment function embroidery sewing machine with the workpiece cloth to be easily mounted to be engaged with the embroidery frame.

[0005]

In order to achieve this object, an embroidery sewing machine having a function of positioning a work cloth and an embroidery frame according to the first aspect of the present invention is a sewing machine for forming a stitch on a work cloth. eye forming unit, its in order to perform the embroidery frame that holds the work cloth, a frame movement unit that moves relative to the stitch forming means the embroidery frame, the alignment between the workpiece cloth and the embroidery frame
Corresponding to a plurality of positions indicating predetermined portions of the embroidery frame
Control means for controlling the seam forming means and the frame moving means so as to form a plurality of marks on the work cloth by seams .

According to a second aspect of the present invention, there is provided an embroidery sewing machine having a function of aligning a work cloth and an embroidery frame .
Plural shown before starting the sewing of the embroidery, the predetermined portion of the embroidery frame in order to align the said embroidery frame and the work cloth
Sewing a plurality of marks corresponding to the positions of
The stitch forming means and the frame moving means are controlled so as to be formed by eyes .

[0007]

In the embroidery sewing machine according to the first aspect of the present invention having the above-mentioned structure, the stitch forming means forms a stitch on the work cloth. The embroidery frame holds the work cloth. The frame moving means moves the embroidery frame relative to the stitch forming means. Control means, the embroidery in order to align the said embroidery frame and the work cloth
The stitch forming means and the frame moving means are controlled so that a plurality of marks respectively corresponding to a plurality of positions indicating predetermined portions of the frame are formed on the work cloth by stitches . Therefore, embroidery starts
Before forming the embroidery frame,
By assigning them to multiple locations
The positioning of the work cloth and the embroidery frame is easy and correct.
Surely done.

Further, in the alignment function embroidery sewing machine with claim 2 workpiece cloth and the embroidery frame according, control means, before starting the sewing of the embroidery, the embroidery frame and the work cloth
Indicating a predetermined portion of the embroidery frame in order to align the
The stitch forming means and the frame moving means are controlled such that a plurality of marks respectively corresponding to a plurality of positions are formed on the work cloth by stitches . Therefore, before the embroidery starts,
The plurality of formed seam marks are indicated by a plurality of marks indicating predetermined portions of the embroidery frame.
The number of positions corresponds to the
Easy and accurate positioning of the cloth and embroidery frame
You.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, the present invention is applied to an embroidery sewing machine M capable of embroidering various embroidery patterns.

As shown in FIG. 2, a pattern selection switch 10 for selecting an embroidery pattern is provided on the front surface of the embroidery sewing machine M from the pillar 2 standing on the right side of the bed 1 to the arm 3.
And an indicator 12 for displaying an embroidery pattern.
A start / stop switch 18 for operating or stopping the embroidery sewing machine M is operably provided at the distal end portion 14 of the arm 3.

Further, a sewing needle 19 is disposed at the lower end 14 of the arm 3 so as to be vertically movable. In the vicinity of the sewing needle 19, a known automatic thread cutting mechanism is provided so that the upper thread and the lower thread are automatically cut. On the side of the pillar 2 opposite to the bed 1, a ROM card 20 storing a plurality of pattern data for sewing an embroidery pattern and displaying the embroidery pattern is attached to an internal card connector 22. A well-known card slot 24 is formed.

An embroidery device 30 is mounted on the bed portion 1. The embroidery device 30 is provided with an embroidery frame driving device 30c for moving the embroidery frames 30a and 30b relatively to the sewing needle 19 in the front, rear, left and right directions. Have been.

The embroidery frame 30a is configured to be attached to the embroidery frame driving device 30c. Embroidery frame 30b
Is a size that engages with the inside of the embroidery frame 30a, and is configured to form a square sewing area in cooperation with the embroidery frame 30a, as shown in FIG. This embroidery frame 3
The workpiece cloths 0a and 30b are configured to be held as indicated by a dashed line in FIG. On the upper surface of the embroidery frame 30b, an outline part mark s indicating a position 3 mm inside the outline of the sewable range indicated by a dashed line in FIG. 1 and a middle dot mark indicating a midpoint of each side of the embroidery frame 30b. t is formed.

Next, the electrical configuration will be described.

CPU 3 for controlling the entire embroidery sewing machine M
0 is connected to a ROM 32 and a RAM 34 of a storage device. The ROM 32 has a storage area for storing a flowchart as shown in FIG. Furthermore, RO
M32 is provided with a storage area for storing the size and shape of the sewing area corresponding to the type of the embroidery frame 30a. The RAM 34 is provided with a storage area in which data during arithmetic processing can be written. The RAM 34 temporarily stores the selected pattern, and stores the embroidery frames 30a and 30b.
Is provided with a storage area for storing the coordinates of the stitch indicating the position of the stitch.

When the start / stop switch 18 is operated to start sewing, the CPU 32 executes the flowchart shown in FIG. 4 once before starting the sewing of the embroidery pattern. The CPU 32 is configured to read pattern data from the ROM card 20 via the card connector 22. In the pattern data,
There are sewing data indicating the cloth feed amount and display data for displaying the embroidery pattern.
Via the known stitch forming device and the embroidery frame driving device 30
c is controlled based on the sewing data. The CPU 32 is configured to control the display 12 based on display data.

The display 12 is configured to display a plurality of embroidery patterns and operation instructions. Further, the display 12
Is configured to display the size and shape of the embroidery frames 30a and 30b when an embroidery pattern is selected. Further, the pattern selection switch 10 is configured so that a cursor for inverting the background color of the display and the color of the display content of the display 12 can be freely moved on the display 12, and using the cursor, An embroidery pattern to be embroidered is selected from a plurality of embroidery patterns displayed on the display unit 12 and the embroidery frames 30a, 30
The size and shape of b and other operation instructions can be input. Further, the CPU 32 is connected to the start / stop switch 18 so that the operation of the embroidery sewing machine M can be started and stopped.

Next, the operation of this embodiment will be described with reference to the flowchart shown in FIG. In the figure, reference symbol Si
(I = 1, 2,...) Are each step.

First, the user selects an embroidery frame 30a that holds the work cloth W in a square shape of about 10 cm on a side, based on the shape of the work cloth W and the size of the pattern to be embroidered. Then, the work cloth W is attached to the embroidery frames 30a and 30b by the user.
b is attached to the embroidery frame driving device 30c. Further, when the embroidery pattern is selected, the embroidery frames 30a and 30
The size and shape of 0b are displayed.

Next, the user inputs a size of about 10 cm on a side and a shape of a square using the pattern selection switch 10 based on the display on the display unit 12, and the attached embroidery frames 30a. The size and shape of 30b can be detected (S1: YES).

Then, based on the input size and shape, the coordinates of the embroidery range are read from the ROM 14 (S2). Subsequently, the coordinates of four corners corresponding to a position 3 mm inward from the outline of the embroidery range shown by the one-dot chain line in FIG. 1 and the coordinates of the middle point of the four sides 3 mm inward are calculated. Are stored in the RAM 34 (S3, S
4). Then, as shown in FIG. 1, the four corner points and the four midpoints are stitches 100 to 1 which are the intersections of the grid stitches.
16 are automatically formed (S5).

Thereafter, the start / stop switch 18
Is pressed to start sewing of the selected embroidery pattern.

Therefore, as shown in FIG. 1, when the embroidery pattern is in the process of being formed, even if the workpiece W falls off the embroidery frames 30a and 30b, the seams 100 to 116 are formed on the workpiece W in advance. When the work cloth W is attached to the embroidery frames 30a and 30b so that the seams 100 to 116 and the outer portion s and the midpoint mark s of the embroidery frame 30b face each other as in FIG. It can be formed without shifting the embroidery pattern "B" in the middle.

When the user puts his hand on the bed 1 and pulls out the ROM card 20, even if the user's hand accidentally touches the embroidery frame 30a and the work cloth W falls off the embroidery frame 30a, The work cloth W can be mounted on the embroidery frame 30a as before.

Further, as described above, the stitches 100 to 116 serving as marks are left on the work cloth W, and even if the sewing position is changed one after another, the position of the sewing area before the current sewing area is not changed. Since it can be grasped, it is possible to accurately and easily combine another embroidery pattern with the already embroidered pattern in the same direction as the already sewn embroidery pattern.

Further, when the user wants to embroider the embroidery pattern "DE" continuously after the embroidery pattern "ABC", the work cloth W is shifted to the left as shown in FIG. S
The work cloth W is attached to the embroidery frames 30a and 30b such that the stitches 112 and 116 are opposed to each other and the stitches t and the stitches 102 and 104 are opposed to each other. Can be embroidered in a row.

In the present embodiment, the stitches representing the four corners of the embroidery frame holding the work cloth W in a square shape are formed.
As long as the work cloth W is held in a circular shape, the stitches may be formed along the circular arc.

[0029]

Apparent as from the above explanation, according to the present invention, the present invention is, in order to align the embroidery frame and the work cloth
A plurality of positions indicating the predetermined portion of the embroidery frame correspond to the respective positions.
That said plurality of indicia so <br/> which is adapted to form at stitches on the work cloth, be separated and the embroidery frame and the workpiece cloth, the embroidery frame
A plurality of positions indicating a predetermined portion and the marks of the plurality of stitches
By making them correspond to each other, the work cloth can be mounted on the embroidery frame in an accurate positional relationship so that the embroidery can be continued. Therefore, it is possible to prevent the patterns from being shifted, inclined, and irregularly arranged in the embroidery pattern. Also,
Since the work cloth can be quickly and accurately mounted on the embroidery frame in an accurate positional relationship , the working efficiency is improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embroidery frame of an embroidery sewing machine according to the present embodiment and stitches indicating positions of the embroidery frame.

FIG. 2 is a front view of the embroidery sewing machine.

FIG. 3 is a block diagram showing an electrical configuration of the embroidery sewing machine.

FIG. 4 is a flowchart for forming a stitch indicating a position of an embroidery frame in the embroidery sewing machine.

FIG. 5 is an explanatory diagram in the case of embroidering long embroidery patterns in the embroidery sewing machine.

[Explanation of symbols]

 W Work cloth 30a Embroidery frame

Claims (2)

(57) [Claims] 1. An embroidery sewing machine, a stitch forming means for forming a stitch on a work cloth, an embroidery frame holding the work cloth, and the embroidery frame relatively moving with respect to the stitch forming means. to perform the frame moving means, the positioning between the workpiece cloth and the embroidery frame
A plurality of positions indicating the predetermined portion of the embroidery frame correspond to the respective positions.
Control means for controlling the stitch forming means and the frame moving means so as to form a plurality of marks on the work cloth with seams, the positioning function of the work cloth and the embroidery frame. Embroidery sewing machine. Wherein said control means, before starting the sewing of the embroidery, to align with the workpiece cloth and the embroidery frame
In order to show a specific part of the embroidery frame,
Controlling the stitch forming means and said frame moving means so as to form in stitches on the corresponding the processed fabric a plurality of indicia
The embroidery sewing machine according to claim 1, further comprising a positioning function between the work cloth and the embroidery frame.