Sewing machine equipped with positioning function between fabric to be sewn and enbroidery frame

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Industrial application field]

The present invention relates to an embroidery sewing machine for embroidering on a cloth to be processed held in an embroidery frame.

【0002】

[Conventional technology]

Conventionally, in such an embroidery sewing machine, in order to see the finished embroidery, to remove the cloth to be processed from the embroidery frame, because the cloth to be processed is caught in something during sewing, or when changing threads. When the work cloth and the embroidery frame are separated due to the user accidentally shifting the embroidery frame, the work cloth is configured to be attached to the embroidery frame based on the user's feeling without any standard. ing. Further, the embroidery pattern is configured to be formed in a predetermined direction with respect to the embroidery frame.

【0003】

[Problems to be Solved by the Invention]

However, once the work cloth and the embroidery frame are separated, it is very difficult to attach the work cloth to the embroidery frame again so that the embroidery part that has already been sewn and the embroidery part that will be sewn later are in the same direction. Have difficulty. Since the embroidery machine embroiders in a predetermined direction regardless of the already sewn part, there is a problem that the already sewn embroidery part and the embroidered part sewn later may be misaligned.

【0004】

The present invention has been made to solve the above-mentioned problems, and even if the cloth to be processed and the embroidery frame are separated, the cloth to be processed can be easily attached to the embroidery frame again as desired. It is an object of the present invention to provide an embroidery sewing machine having a function of aligning a cloth to be processed and an embroidery frame.

【0005】

[Means for solving problems]

In order to achieve this object, the embroidery sewing machine with a function of aligning the work cloth and the embroidery frame according to claim 1 of the present invention uses a seam forming means for forming a seam on the work cloth and the work cloth. The embroidery frame to be held, the frame moving means for moving the embroidery frame relative to the seam forming means, and the seam forming means and the frame so as to form a mark indicating the position of the embroidery frame on the processed cloth on the processed cloth. It is provided with a control means for controlling the means of transportation.

【0006】

Further, in the embroidery sewing machine with the alignment function between the work cloth and the embroidery frame according to claim 2, before sewing the embroidery, a mark indicating the position of the embroidery frame on the work cloth is formed on the work cloth. A control means for controlling the seam forming means and the frame moving means is provided.

【0007】

[Action]

In the embroidery sewing machine having the above configuration and having the function of aligning the cloth to be processed and the embroidery frame according to claim 1 of the present invention, the stitch forming means forms a stitch on the cloth to be processed. The embroidery frame holds the fabric to be processed. The frame moving means moves the embroidery frame relative to the stitch forming means. The control means controls the stitch forming means and the frame moving means so as to form a mark indicating the position of the embroidery frame on the cloth to be processed so as to form a mark indicating the position of the embroidery frame on the cloth to be processed, and a trace of the position where the embroidery frame is attached remains.

【0008】

Further, in the embroidery sewing machine with the alignment function between the processed cloth and the embroidery frame according to claim 2, the control means puts a mark indicating the position of the embroidery frame on the processed cloth on the processed cloth before sewing the embroidery. By controlling the stitch forming means and the frame moving means so as to form, evidence of the position where the embroidery frame is attached remains before the embroidery is started.

【0009】

[Example]

Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings.

【0010】

This embodiment is a case where the present invention is applied to an embroidery sewing machine M capable of embroidering various embroidery patterns.

【0011】

As shown in FIG. 2, on the front surface from the pedestal portion 2 to the arm portion 3 standing on the right side of the bed portion 1 of the embroidery sewing machine M, a pattern selection switch 10 for selecting an embroidery pattern and a display for displaying the embroidery pattern are displayed. The vessel 12 is arranged. A start / stop switch 18 for operating or stopping the embroidery sewing machine M is operably provided on the tip portion 14 of the arm portion 3.

【0012】

Further, a sewing needle 19 is arranged at the lower end 14 of the arm portion 3 so as to be movable up and down. A known automatic thread trimming mechanism is provided in the vicinity of the sewing needle 19 so that the needle thread and the bobbin thread are automatically cut. Further, on the side surface of the pedestal portion 2 opposite to the bed portion 1, a ROM card 20 storing the sewing of the embroidery pattern and a plurality of pattern data for displaying the embroidery pattern is attached to the internal card connector 22. A known card slot 24 is formed.

【0013】

An embroidery device 30 is attached to the bed portion 1, and the embroidery device 30 is provided with an embroidery frame driving device 30c that moves the embroidery frames 30a and 30b relative to the sewing needle 19 in the front-back and left-right directions. ..

【0014】

The embroidery frame 30a is configured to be attached to the embroidery frame driving device 30c. The embroidery frame 30b has a size that engages with the inside of the embroidery frame 30a, and is configured to form a sewing area in a square shape as shown in FIG. 1 in cooperation with the embroidery frame 30a. The embroidery frames 30a and 30b are configured so that the cloth W to be processed is held as shown by the alternate long and short dash line in FIG. On the upper surface of the embroidery frame 30b, there is an outer shape mark s indicating a position 3 mm inside the outer line of the sewable range shown in the alternate long and short dash line in Fig. 1, and a midpoint mark indicating the midpoint of each side of the embroidery frame 30b. t and are formed.

【0015】

Next, the electrical configuration will be described.

【0016】

The ROM 32 and RAM 34 of the storage device are connected to the CPU 30 that controls the entire embroidery sewing machine M. The ROM 32 has a storage area for storing a flowchart as shown in FIG. Further, the ROM 32 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 is provided with a storage area for temporarily storing the selected pattern and storing the coordinates of the stitches indicating the positions of the embroidery frames 30a and 30b.

【0017】

When the start / stop switch 18 is operated to start sewing, the CPU 32 is configured to perform the flowchart shown in FIG. 4 once before starting sewing of the embroidery pattern. The CPU 32 is configured to read pattern data from the ROM card 20 via the card connector 22. The pattern data includes sewing data indicating the amount of cloth feed and display data displaying the embroidery pattern, and the CPU 32 uses the known stitch forming device and the embroidery frame driving device 30c via the embroidery frame driving circuit 38. It is configured to control based on sewing data. The CPU 32 is configured to control the display 12 based on the display data.

【0018】

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 the embroidery pattern is selected. Further, the pattern selection switch 10 is configured so that a cursor that inverts the display background color and the display content color of the display 12 can be freely moved on the display 12, and the cursor can be used to move the cursor. It is configured so that an embroidery pattern to be embroidered can be selected from a plurality of embroidery patterns displayed on the display 12, and the size and shape of the embroidery frames 30a and 30b and other operation instructions can be input. In addition, this CPU 32 is connected to the start / stop switch 18 so that the operation of the embroidery sewing machine M can be started and interrupted.

【0019】

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

【0020】

First, the user selects an embroidery frame 30a that holds the work cloth W in a square shape with a side of about 10 cm 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, and then the embroidery frames 30a and 30b are attached to the embroidery frame drive device 30c. Further, when the embroidery pattern is selected, the size and shape of the embroidery frames 30a and 30b are displayed on the display 12.

【0021】

Next, the user inputs the size of about 10 cm on each side and the shape of a square using the pattern selection switch 10 based on the display of the display 12, and the size of the attached embroidery frame 30a.30b. Make the shape and detectable (S1: YES).

【0022】

Then, based on the input size and shape, the coordinates of the embroidery range are read out from ROM14 (S2). Next, the coordinates of the four corners corresponding to the position 3 mm inward from the outline of the embroidery range shown by the alternate long and short dash line in Fig. 1 and the coordinates of the midpoints of the four sides 3 mm inside are calculated. , Stored in RAM34 (S3, S4). Then, as shown in FIG. 1, stitches 100 to 116 in which the points at the four corners and the four midpoints are the intersections of the grid stitches are automatically formed (S5).

【0023】

After that, the start / stop switch 18 is pressed to start sewing the selected embroidery pattern.

【0024】

Therefore, as shown in FIG. 1, when the embroidery pattern is being formed, even if the work cloth W falls off from the embroidery frames 30a and 30b, the stitches 100 to 116 are formed in advance on the work cloth W. Therefore, if the processed cloth W is attached to the embroidery frames 30a and 30b so that the stitches 100 to 116 and the outer shape s and the middle dot mark s of the embroidery frame 30b face each other as in FIG. The pattern "B" can be formed without shifting.

【0025】

Even if the user's hand accidentally touches the embroidery frame 30a and the work cloth W falls off from the embroidery frame 30a when the user puts his / her hand on the bed portion 1 and pulls out the ROM card 20, the work cloth W can be attached to the embroidery frame 30a as before.

【0026】

Further, as described above, the stitches 100 to 116 that serve as marks are left on the cloth W to be processed, and even if the sewing position is changed one after another, the position of the sewing area before the current sewing area can be grasped. Therefore, it is possible to accurately and easily combine another embroidery pattern with the already embroidered embroidery pattern in the same direction as the already sewn embroidery pattern.

【0027】

Furthermore, when the embroidery pattern "DE" is to be continuously embroidered after the embroidery pattern "ABC", as shown in FIG. 5, the work cloth W is shifted to the left side and sewn with the outer shape mark S on the left side. If the work cloth W is attached to the embroidery frames 30a and 30b so that the stitches 112 and 116 face each other and the midpoint marks t and the stitches 102 and 104 face each other, the embroidery pattern "ABCDE" is arranged in a row. Can be embroidered.

【0028】

In this embodiment, the alignment mark is represented by a seam, but if it is a mark related to alignment, it may be a chacott, easily erasable ink, or a sticker mark. In this embodiment, the stitches representing the four corners of the embroidery frame that holds the work cloth W in a square shape are formed, but if the work cloth W is held in a round shape, the circular arc is formed. A seam may be formed along the line.

【0029】

[Effect of the invention]

As is clear from the above explanation, since the position of the work cloth and the frame of the present invention is formed as a guide, even if the work cloth and the embroidery frame are separated, the work cloth can be continuously embroidered. Can be attached to the embroidery frame. Therefore, it is possible to prevent the pattern from being displaced or tilted in the middle, or the embroidery pattern from being arranged irregularly. In addition, since the cloth to be processed can be quickly attached to the embroidery frame, work efficiency is improved.

[Simple explanation of drawings]

[Figure 1]

FIG. 1 is an explanatory diagram showing an embroidery frame of the embroidery sewing machine of this embodiment and a stitch indicating the position of the embroidery frame.

[Figure 2]

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

[Fig. 3]

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

[Fig. 4]

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

[Fig. 5]

FIG. 5 is an explanatory diagram when embroidering a long line of embroidery patterns on the embroidery sewing machine.

[Explanation of symbols]

W processed cloth 30a embroidery frame