JPH06339588A - Sewing machine equipped with positioning function between fabric to be sewn and enbroidery frame - Google Patents

Abstract

PURPOSE:To easily fit a fabric to be sewn which has, fallen off from an embroidery frame to the original position. CONSTITUTION:When an embroidery frame being suitable for the purpose of use is selected (S1: YES), the position of a stitch to indicate the position of the embroidery frame is automatically designated (S2, S3) based on the sewing range of the embroidery frame, and the stitch is formed at the designated position (S5). Then, the forming of an embroidery pattern is started.

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 on an embroidery frame.

[0002]

2. Description of the Related Art Conventionally, in such an embroidery sewing machine, in order to see the finish of embroidery, to remove the work cloth from the embroidery frame, or when the work cloth is caught on something during sewing, When the thread is changed, the user accidentally shifts the embroidery frame, so when the work cloth and the embroidery frame are separated, the work cloth is attached to the embroidery frame based on the user's feeling without any reference. It is configured to be.
Further, the embroidery pattern is formed on the embroidery frame in a predetermined direction.

[0003]

However, once the work cloth and the embroidery frame are separated, the embroidery frame is re-assembled so that the already sewn embroidery part and the embroidery part sewn later are in the same direction. It is very difficult to attach the work cloth. Since the embroidery sewing machine embroiders in a predetermined direction irrespective of the already sewn portion, there is a problem that the already sewn embroidery portion and the later sewn embroidery portion may be displaced.

The present invention has been made in order to solve the above-mentioned problems. Even if the work cloth and the embroidery frame are separated from each other, the embroidery frame is desired to be the work cloth again. An object of the present invention is to provide an embroidery sewing machine with a function of aligning a work cloth and an embroidery frame that can be easily attached.

[0005]

In order to achieve this object, an embroidery sewing machine with a function of aligning a work cloth and an embroidery frame according to claim 1 of the present invention is a sewing machine for forming stitches on a work cloth. Eye forming means, an embroidery frame for holding the work cloth, frame moving means for moving the embroidery frame relative to the stitch forming means, and marks for indicating the position of the embroidery frame on the work cloth formed on the work cloth Control means for controlling the stitch forming means and the frame moving means.

Further, in the embroidery sewing machine having a function of aligning the work cloth and the embroidery frame according to the second aspect, a mark representing the position of the embroidery frame on the work cloth is formed on the work cloth before sewing the embroidery. A control means for controlling the stitch forming means and the frame moving means is provided.

[0007]

In the embroidery sewing machine with the function of aligning the work cloth and the embroidery frame according to the first aspect of the present invention having the above structure, the seam forming means forms the seam 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. 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 work cloth on the work cloth, and a trace of the position where the embroidery frame is attached remains.

Further, in the embroidery sewing machine with a function of aligning the work cloth and the embroidery frame according to the second aspect, the control means prints a mark indicating the position of the embroidery frame on the work cloth before sewing the embroidery. By controlling the stitch forming means and the frame moving means so as to form the work cloth, a trace of the position where the embroidery frame is attached remains before the embroidery is started.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An 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 from the pedestal portion 2 standing upright on the right side of the bed portion 1 of the embroidery sewing machine M to the arm portion 3.
Further, a display 12 for displaying the embroidery pattern 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.

Further, a sewing needle 19 is arranged at the lower end 14 of the arm portion 3 so as to be vertically movable. A known automatic thread trimming mechanism is provided in the vicinity of the sewing needle 19 so that the upper thread and the lower 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 a plurality of pattern data for sewing an embroidery pattern and displaying it is attached to an internal card connector 22. A 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 relative to the sewing needle 19 in the front-back and left-right directions. Has been.

The embroidery frame 30a is configured to be attached to the embroidery frame driving device 30c. Embroidery frame 30b
Is sized to engage with the inside of the embroidery frame 30a, and is configured to cooperate with the embroidery frame 30a to form a sewn area in a rectangular shape as shown in FIG. This embroidery frame 3
0a and 30b are configured so that the work cloth W is held as shown by the alternate long and short dash line in FIG. On the upper surface of the embroidery frame 30b, an outer shape mark s indicating a position within 3 mm inside the outer shape line of the sewable range shown by the alternate long and short dash line in FIG. t and are formed.

Next, the electrical configuration will be described.

A CPU 3 which controls the entire embroidery sewing machine M.
A ROM 32 and a RAM 34 of a storage device are connected to 0. The ROM 32 has a storage area for storing the flowchart shown in FIG. Furthermore, RO
The 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 the data being processed can be written. The RAM 34 temporarily stores the selected pattern, and the embroidery frames 30a and 30b.
A storage area is provided for storing the coordinates of the stitches indicating the position.

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

The display device 12 is configured to display a plurality of embroidery patterns and operation instructions. Furthermore, 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 such that a cursor for reversing the background color of the display on the display 12 and the color of the display content can be freely moved on the display 12, and the cursor is used to The embroidery pattern to be embroidered is selected from the plurality of embroidery patterns displayed on the display 12, and the embroidery frames 30a and 30a
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, and is configured to start and interrupt the operation of the embroidery sewing machine M.

Next, the operation of this embodiment will be described with reference to the flow chart shown in FIG. Incidentally, reference numeral Si in the drawing
(I = 1, 2, ...) is each step.

First, the user selects the embroidery frame 30a that holds the work cloth W in a square shape having 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.
b is attached to the embroidery frame driving device 30c. Further, when the embroidery pattern is selected, the display device 12 displays the embroidery frame 30a.
The size and shape of 0b are displayed.

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

Then, the coordinates of the embroiderable range are read from the ROM 14 based on the input size and shape (S2). Subsequently, the coordinates of the four corners corresponding to the position of 3 mm inward from the outline of the embroiderable range shown by the alternate long and short dash line in FIG. 1 and the coordinates of the midpoint of the four sides that are also inside 3 mm are calculated. , RAM 34 (S3, S
4). Then, as shown in FIG. 1, the stitches 100 to 1 at which the points at the four corners and the four midpoints are the intersections of the lattice stitches.
16 is automatically formed (S5).

After that, the start / stop switch 18
Is pressed, and the sewing of the selected embroidery pattern is started.

Therefore, as shown in FIG. 1, even when the work cloth W falls off the embroidery frames 30a and 30b while the embroidery pattern is being formed, the stitches 100 to 116 are formed on the work cloth W in advance. If the work cloth W is attached to the embroidery frames 30a and 30b so that the stitches 100 to 116 and the outer shape portion s and the midpoint mark s of the embroidery frame 30b face each other as in FIG. It is possible to form the embroidery pattern "B" on the way without shifting.

Even when the user's hand accidentally touches the embroidery frame 30a when the user holds the bed 1 and pulls out the ROM card 20, the work cloth W falls off the embroidery frame 30a. The work cloth W can be attached to the embroidery frame 30a as before.

Further, as described above, the stitches 100 to 116 as marks are left on the work cloth W, and even if the sewing positions are changed one after another, the position of the sewing region prior to the current sewing region is not changed. Since it can be grasped, 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.

Further, when it is desired to continuously embroider the embroidery pattern “DE” next to the embroidery pattern “ABC”, as shown in FIG. 5, the work cloth W is shifted to the left side and the outer shape mark on the left side is printed. S
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 mark t and the stitches 102 and 104 face each other, the embroidery pattern "ABCDE" is obtained. Can be embroidered in a row.

In the present embodiment, the alignment mark is represented by stitches, but a chacot, easily erasable ink, or a seal mark may be used as long as it serves as a alignment mark. In the present embodiment, the seams representing the four corners of the embroidery frame for holding the work cloth W are formed in a square shape, but if the work cloth W is held in a circular shape, the circular arc is formed. You may form a seam along it.

[0029]

As is apparent from the above description, since the standard for the position of the work cloth and the frame of the present invention is formed, even if the work cloth and the embroidery frame are separated, the embroidery continues. It is possible to attach the work cloth to the embroidery frame. Therefore, it is possible to prevent the pattern from being displaced or inclined in the middle, and to prevent irregular arrangement of the embroidery pattern. Further, since the work cloth can be quickly attached to the embroidery frame, the work efficiency is improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embroidery frame of an embroidery sewing machine of the present embodiment and stitches indicating the position 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 flow chart for forming a stitch indicating the position of an embroidery frame in the embroidery sewing machine.

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

[Explanation of symbols]

 W processing cloth 30a Embroidery frame

Claims (2)

[Claims] 1. In an embroidery sewing machine, a stitch forming means for forming a stitch on a work cloth, an embroidery frame for holding the work cloth, and the embroidery frame relative to the seam forming means. A frame moving means and a control means for controlling the seam forming means and the frame moving means so as to form a mark on the work cloth, the mark representing the position of the embroidery frame on the work cloth. An embroidery sewing machine with a function of aligning the work cloth and the embroidery frame. 2. The control means, before sewing the embroidery,
2. The work cloth and the embroidery frame according to claim 1, wherein the stitch forming means and the frame moving means are controlled so as to form a mark indicating the position of the embroidery frame on the work cloth on the work cloth. An embroidery sewing machine with a function to align with.