JPH01146574A - Dyeing sewing machine - Google Patents

Abstract

PURPOSE: To substantially improve work efficiency by identifying the color of a cloth and automatically dyeing the color of a needle thread to the same color. CONSTITUTION: For instance, when yellow cloth is used, the light of a light source 1 for illumination is reflected on the cloth, a photovoltaic effect is caused in respective photodiodes through the filters of R(red), G(green) and B(blue) of a color sensor 2 and respectively different voltages are generated. The voltages generated in the photodiodes corresponding to R(red), G(green) and B(blue) are respectively converted to digital values through an amplifier circuit 3 and an A/D converter 4. At the time of defining the inputted digital values of R(red), G(green) and B (blue) as RD, GD and BD respectively, a cloth color identification means 5 obtains respective component ratios to the sum and identifies that the color of the cloth is yellow by the comparison of the values of the respective component ratios. A needle thread color control means 6 controls the dyeing of the needle thread to yellow based on the cloth color information of yellow from the cloth color identification means 5. A needle thread dyeing means 7 dyes, for instance, white thread to yellow corresponding to the color information for performing dyeing to yellow from the needle thread color control means 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to the control of a dyeing sewing machine that dyes upper thread in any color.

(Prior art) Conventionally, when sewing with the needle thread color the same as the fabric color, a device installed in a dyed sewing machine selects the needle thread color after the operator confirms the fabric color. It was set by

(Problem to be solved by the invention) As in the past, after the operator checks the color of the upper thread and the color of the fabric,
In the setting method, it is necessary to check and reset the color of the fabric every time the fabric is changed, which increases the burden on the operator and is prone to errors.

(Means for Solving the Problems) In order to solve these problems, the present invention identifies the color of the fabric and automatically dyes the needle thread in the same color as that color, thereby easily changing the color of the needle thread. You can sew with the same color as the fabric.

In addition, in a dyed sewing machine having a needle thread dyeing means and a means for selecting the color thereof, the part of the color display device that graphically displays the pattern is displayed in the same color as the color selected by the dyeing means, and the other This can be easily confirmed by displaying the same color as the identified fabric on the display section.

Example 1 Embodiments of the present invention will be described based on the drawings.

FIG. 1 is an example of an external view of the dyeing sewing machine of the present invention, showing an illumination light source 1 and a color sensor 2 for detecting the color of fabric.
A needle thread dyeing means 7 for dyeing the needle thread is provided inside the dyeing sewing machine (not shown) near the needle bar of the sewing machine.

To explain in detail in FIG. 2, the illumination light source 1 is used as a light source for a color sensor 2 for detecting the color of fabric, thereby reducing the influence of surrounding brightness on sensitivity.

In this embodiment, the color sensor 2 is an amorphous integrated color sensor using a three-color separation method. This is equipped with three color filters that separate light into the three primary colors of red (R), green (G), and blue (B), and are attached to three corresponding photodiodes. It has an output terminal.

The amplifier circuit 3 receives R from the connected color sensor 2,
Amplify each of the G%B input signals. R,G.

The amplification factor of each B is adjusted so that red, green, and blue objects are illuminated with the illumination light source 1, and the levels of the amplified output signals of r(, G, and H are equal.'A/ D converter 4
converts the amplified R, G, and I3 signals into digital values and outputs them.

The fabric color identification means 5 identifies the color of the fabric from the ratio of digital values of the R1GSB signal from the A/D converter 4.

The upper thread color control means 6 outputs dyeing color information based on the cloth color information from the cloth identification means 5 so as to dye the upper thread in the same color as the cloth color.

The upper thread dyeing means 7 performs a dyeing process on the upper thread according to the dyeing color information from the upper thread color control means 6.

The operation of the first embodiment having the above configuration will be specifically explained.

(b) When the color of the fabric is yellow, the light from the illumination light source 1 is reflected on the fabric, and the color sensors 2 are R (red), G (green), and B.
Through the (blue) filter, a photovoltaic effect occurs on each photodiode, each generating a different voltage.

(b) The voltages generated in the photodiodes corresponding to rl (red), G (green), and B (blue) are connected to amplifier circuit 3 and A, respectively.
It is converted into a digital value via the /D converter 4.

(c) The fabric identification means 5 uses the input R (red) and G (green).
, B (blue) as RD, GD, and BD, the ratio of each component to the sum of these values is determined, and the color of the fabric is determined from these values.

T = RD + GD + BD Rx = RD / T Gx - GD / T Bx = BD / T From the comparison of the values of each component ratio Rx, Gx, Bx, it is identified that the color of the fabric is yellow.

(d) The upper thread color control means 6 controls the dyeing of the upper thread to yellow based on the yellow cloth color information from the cloth color identification means 5.

(e) The upper thread dyeing means 7 dyes, for example, a white thread yellow in accordance with the color information for dyeing yellow from the upper thread color control means 6.

(f) By rotating the sewing machine, the upper thread is dyed yellow, which is the same color as the fabric, and is sequentially fed out and sewn.

Example 2 A second embodiment of the present invention will be described based on the drawings.

FIG. 3 is a control block diagram of the second embodiment.

In accordance with the control information from the display control means 11, the display drive means 12 outputs drive signals such as time-division drive signals to the color display 13, and the color display 13 displays red, green, and blue for each dot based on the drive signals. Enables or disables the corresponding display element. In the display example shown in Fig. 4, the pattern picture “A”
The o part will be red, which is the color of the upper thread, and the other parts will be white, which is the color of the fabric.

The pattern selection means 14 selects the alphabet "Ao" as the pattern.
When selected, information indicating that pattern °A° is selected is output, and the pattern display information storage means 15 outputs the information that the pattern °A° is selected.
Based on the selection information of the pattern "A°", the dot-by-dot pictorial display information of the corresponding display is read from the internal memory and output.

The needle thread color selection means 16 is composed of a plurality of keys for selecting the needle thread color that the sewing machine user desires to sew.

The upper thread dyeing means 17 performs the upper thread dyeing process according to the upper thread color selection information selected by the upper thread color selection means 16.

The display color control means 11 includes the pattern display information storage means 15.
Based on the pattern display information from and the selected needle thread color information from the needle thread color selection means 16, the color for displaying the picture of the selected pattern is controlled to be the same as the selected needle thread color. . Furthermore, based on the fabric color information from the fabric color identification means 5, the color of the display section other than the one that displays the picture is controlled to be the same as the color of the fabric.

The operation of the second embodiment having the above configuration will be explained.

(a) The color of the fabric is white. The light from the illumination light source 1 is reflected on the fabric, and the color sensor 2 detects R (red), G (green), and B.
(Blue) Through the filter, a photovoltaic effect occurs on each photodiode and generates a voltage.

(b) The voltages generated in the photodiodes corresponding to R (red), G (green), and B (blue) are connected to amplifier circuit 3 and A/
It is converted into a digital value via the D converter 4.

(C) If the input digital values of R (red), G (green), and B (blue) are respectively RD, CD, and BD, the fabric color identification means 5 calculates the ratio of each component to the sum of these values, and calculates the ratio of each component to the sum of these values. Determine color from value.

T=RD+GD+BD Rx=RD/T Gx=GD/T Bx=BD/T It is identified that the color is white by comparing the values of each component ratio RX, GX, and BX.

(d) When the upper thread color selection means 16 selects red as the upper thread color, it outputs red upper thread color information.

(e) The needle thread dyeing means 17 dyes, for example, a white thread red based on the needle thread color information from the needle thread color selection means 16 that selects red.

(f) By rotating the sewing machine, the needle thread is dyed red and is sequentially fed out, so that the color of the needle thread is maintained in red.

(g) If the alphabet A° is selected as a pattern from the pattern selection means 14, information indicating that pattern "A" has been selected is output.

(h) The pattern display information storage means 15 reads and outputs the dot-by-dot pictorial display information of the corresponding display from the internal memory based on the selection information of the pattern "Ao" from the pattern selection means 14.

(i) The display color control means 11 changes the color of the dots on the display corresponding to the pictorial display information of the pattern "Ao" from the pattern display information storage means 15 to red according to the red information from the needle thread color selection means!6. Control so that

Furthermore, the color of the dots on the display that do not correspond to the pictorial display information of pattern °A' is controlled to be white in accordance with the white information from the fabric color identifying means 5.

(To make the D dot red, press 1 on the color display 13.)
Of the three elements corresponding to red, green, and blue for each dot, only the red element is enabled. Similarly, to make the dot color white, a means of activating three elements, red, green, and blue, is used.

(k) The display drive means 12 outputs, for example, time-division drive signals to the color display 13 in accordance with the control information from the display control means ll.

(9) The color display 13 enables or disables the display elements corresponding to red, green, and blue for each dot based on the drive signal.

In the display example shown in FIG. 4, the part of the pattern picture "A" is red, which is the color of the needle thread, and the other parts are white, which is the color of the fabric.

(Effects of the Invention) As described above, according to the present invention, a dyeing sewing machine having a selection operation section that allows a sewing machine operator to select a plurality of colors for dyeing the needle thread to the color that he/she desires to sew, If you do not perform this operation, the upper thread color will be dyed automatically to the same color as the fabric color, and you will not have to check the fabric color and set the upper thread color every time you change the fabric. It is possible to dye the needle thread in the same way as the previous one, which greatly improves work efficiency.

Furthermore, since it is possible to specify a color for the upper thread other than the color of the fabric, a wide range of patterns can be sewn.

[Brief explanation of the drawing]

FIG. 1 is an external view of the dyeing sewing machine of Example 2. FIG. 2 is a control block diagram showing the first embodiment of the present invention. FIG. 3 is a control block diagram showing a second embodiment of the present invention, and FIG. 4 is a specific display example of the present invention. In the figure, 5... Fabric color identification means, 6... Needle thread color control means, 7... Needle thread dyeing means, 11... Display color control means,
13... Color display device, 14... Pattern selection means, 1
6...Needle thread color selection means.

Claims (2)

[Claims] (1) a color sensor that detects the color of the fabric for sewing; a fabric color identification device that identifies the color of the fabric from the output information of the sensor; a needle thread dyeing device that dyes the needle thread in any color; A dyeing sewing machine characterized in that the upper thread dyeing means has upper thread color control means for dyeing the upper thread in the same color as the color of the cloth based on the information on the color of the cloth from the cloth color identification means. (2) A pattern selection means for selecting a sewing pattern, a color display means for displaying the selected pattern, a color sensor for detecting the color of the fabric for sewing, and a color sensor for detecting the color of the fabric from the output information of the sensor. a fabric color identification means for identifying a color; a needle thread color selection means for selecting a needle thread color; a needle thread dyeing means for dyeing the needle thread in a selected color based on information of the selection means; Based on the information from the selection means and the fabric color identification means, the display color of the part representing the selected pattern of the color display means is the selected needle thread color, and the display color of other parts is the detected fabric. 1. A dyeing sewing machine characterized by having display color control means for displaying color in the following colors.