JPH0347295A - Embroidering machine - Google Patents

Abstract

PURPOSE:To enable embroidering pitches to be easily changed by inputting successive one needle data and one pitch command value and preparing new successive one needle data with a desired arranged length of embroidering pitch with an embroidering pattern drawn by the inputted successive one needle data nearly held. CONSTITUTION:An embroidering machine inputs one needle data of a predetermined embroidering pattern through a paper tape reading device 15 from the paper tape. The inputted one needle data are received selectively in any of 10 one needle data receiving areas provided in a RAM 51. The embroidering machine reads out the one needle data received in the predetermined receiving area according to the operation of a console panel 21, and embroiders by driving various motors 25-29 with a well-known method on the basis of the one needle data or successively reads out the one needle data received in the receiving area within the RAM 51 to prepare new one needle data of a predetermined embroidering pitch length 1. Thereby, the embroidering machine can be adapted to various foundation blanks and embroidering yarns.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an embroidery sewing machine that performs stitch sewing by inputting sequential stitch data indicating relative sequential positions of a sewing needle and an embroidery frame.

[Prior Art] Conventionally, embroidery sewing machines perform stitch sewing based on successive stitch data of a desired pattern.

The sequential one-stitch data, which is the basic data for this stitch sewing, is obtained by sequentially reading the needle drop points from the pattern drawn on the paper in the sewing order and converting them into numerical values.

The sequential stitch data digitized in this way is recorded on a storage medium such as paper tape, and is referenced by the embroidery sewing machine when actually moving the sewing needle and the embroidery frame relative to each other.

[Problems to be Solved by the Invention] However, with the conventional technology, the final needle drop point of an embroidery sewing machine is determined by the inputted sequential stitch data itself. If the intervals between the needle drop points are uneven,
As a result, the problem of uneven embroidery pitches frequently occurred.

In addition, it was possible to enlarge or reduce the stitch length of one stitch data sequentially, but it was also possible to specify the embroidery pitch and enlarge or reduce it, or to change the embroidery pitch without changing the size of the embroidery pattern. Therefore, there was a problem in that the embroidery pitch could not be changed appropriately depending on the base material.

An object of the present invention is to solve the above-mentioned problems and to facilitate changing the embroidery pitch in order to create a regular embroidery pitch that matches the base material.

[Means for Solving the Problems] As a means for achieving the above object, the embroidery sewing machine of the present invention has a sewing needle MA and an embroidery frame MB, as illustrated in FIG.
In an embroidery sewing machine MC that performs stitching by inputting sequential stitch data indicating a relative sequential position with respect to the embroidery sewing machine MC, a bar calculating means MD calculates a trajectory of a bar connecting the input sequential stitch data; an embroidery pitch input means ME for inputting a command value for one pitch of the stitch date; and a stitch data for sequentially updating the one-stitch data according to the input one-pitch command value along the trajectory of the bar line calculated above. The gist is that the data updating means MF is provided.

[Function] In the embroidery sewing machine MC of the present invention, the bar calculating means MD calculates the locus of the bar in which successive stitch data indicating the relative sequential positions of the sewing needle MA and the embroidery frame MB are linked, and the embroidery pitch is determined by The input means ME inputs a command value for one pitch of stitch sewing, and the one-stitch data updating means MF sequentially updates the one-stitch data according to the command value for one pitch along the locus of the bar line.

As a result, the embroidery sewing machine MC moves the relative positions of the sewing needle MA and the embroidery frame MB in accordance with the updated sequential stitch data and performs stitch sewing.

Therefore, the stitch sewing by the embroidery sewing machine MC is performed at an embroidery pitch in accordance with the input one-pitch command value while substantially maintaining the trajectory of the bar line drawn by the input sequential one-stitch data.

[Example code] Next, an embroidery sewing machine 1 according to an embodiment will be explained based on the drawings.

The embroidery sewing machine 1 whose overall configuration is shown in FIG. 2 performs embroidery by stitch sewing, and has a sewing needle 3 that is arranged to be able to move up and down, and two sets of heads 5 that move the needle up and down.
, 7, an embroidery frame drive section 11 that moves the embroidery frame 9 in the "X-Y" direction, and a control device that forms a predetermined embroidery pattern by controlling the head 5.7 and the embroidery frame drive section 11. @1
3.

As shown in the block diagram of FIG. 3, the control device 13 includes interfaces with various input/output devices and a microcomputer.

Input devices for inputting various data to the control device 13 include a paper tape reader 15, a console panel 21 equipped with a display 17, pushbutton switches 19, etc., and an encoder 23 for detecting the position of the sewing needle 3. It is equipped. The paper tape reading device 15 serving as such an input device reads one stitch data of a predetermined embroidery pattern from a paper tape created by an embroidery pattern creation device (not shown). The console panel 21 is used to perform various operations such as inputting stitch data to the paper tape reading device 15 or operating the embroidery sewing machine 1.

The output devices that the control device 13 outputs various data or drives include an X-axis motor 25 that moves the embroidery frame 9 in the rXJ direction, a Y-axis motor 27 that moves the embroidery frame 9 in the rYJ directions, and a motor that rotates the sewing needle 3. A Z-axis motor 28 for moving the sewing needle 3 and a good motor 29 for moving the sewing needle 3 up and down are provided.

The control device 13, which inputs data from various input/output devices and drives various motors, serves as an input interface.
It includes a console controller 33 for inputting data through the console panel 21, and interfaces 35 and 37 for the encoder 23 and paper tape reader 15.

Also, as an output interface, the X-axis motor 25
and a Y-axis motor 27 , a Z-axis motor controller 40 that drives the Z-axis motor 28 , a sewing motor controller 41 that drives the sewing motor 29 and A display controller 45 for driving a display 17 provided therein is also provided.

The control device 13 has a well-known CPU 47. ROM49
．． It is equipped with RAM51.

With the above configuration, the embroidery sewing machine 1 inputs one-stitch data of a predetermined embroidery pattern from a paper tape via the paper tape reader 15, and stores the input one-stitch data in ten one-stitch data storage areas provided in the RAM 51. "#0" to "#9
”. Also, embroidery sewing machine 1
reads the one-stitch data stored in predetermined storage areas "#0" to "#9" in response to the operation of the console panel 21, and based on this one-stitch data, various motors 25 are controlled by a well-known method. By driving 29 to 29, embroidery stitching can be performed, and as explained below, RAM 5
The stitch data stored in the storage areas "#OJ" to "#9" in the embroidery section 1 are sequentially read out, and new one-stitch data with a predetermined embroidery pitch length of 1 is created.

The one-stitch data stored in any of the storage areas "#O" to "#9" is, for example, as shown below.

As shown in FIGS. 4 and 5, when sewing the base 60 and the material 62 in an overlapping manner using the sewing thread 64, the data for each stitch when forming needle drop points A to H in the figures are sequentially Coordinate data A (Xl, yl), B (x2.y2
), C(x3.y3)...H(x8.y8).

Next, an example of creating new one-stitch data from one-stitch data stored in one of the storage areas "#O" to "#9" is shown in the flowchart of the L-COPY motor routine shown in FIG. I will explain based on this.

When the L-COPY motor routine is activated in the CPU 47, the mode selection key 66 on the console panel 21 shown in FIG. 3 is operated, and it is determined whether the L-COPY mode is selected (step 100). .

If the L-COPY mode is not selected here, this routine is temporarily terminated.

If the L-COPY mode is selected (displayed on the display 17 as shown in FIG. 3), then press the F1 key 68. on the console panel 21. F2 key 70
．． Waiting for the F3 key 72 to be operated, these data are input (step 110).

The data input here is input as shown below, and has a predetermined meaning attached to it.

The F3 key 72 is a push button switch for setting embroidery pitch length 1. By pressing the F3 key 72, an embroidery pitch input routine (not shown) is activated in the CPU 47, and the embroidery pitch length 1 can be input by operating the numerical input key group 74. This embroidery pitch length 1
(LENGTH is displayed on the display 17) is the embroidery pitch display area 76 on the display 17.
As shown in , the value "15" indicating the length "1.5 shoes" is set as the initial value, but this embroidery pitch input routine changes it to the desired value I"0.
．． It can be changed in units of 1 mJ.

The F2 key 70 is a push button switch for setting storage area numbers "#O" to "#9" in which the one-stitch data before changing the embroidery pitch 1 is stored. The storage area number of the one-stitch data (SOURCE) before the change is displayed in the source display area 78 on the display 17.

The F1 key 68 is a push button switch for setting storage area numbers "#O" to "#9" in which the one-stitch data after changing the embroidery pitch length 1 is stored. The storage area number of the one-stitch data (L-COPY) after this change is displayed in the L-COPY display area 80 on the display 17.

Fl, F2. After entering the F3 data, the DRIVE key 82 on the console panel 21 is pressed to turn it on.
If the button has not been pressed, this routine is immediately terminated. If the button has been pressed, the process moves to the next step and calculates the one-stitch data of the new embroidery pitch length l. (Step 130).

The calculation of the one-stitch data for the new embroidery pitch 1 is executed as shown below.

(i) From the storage area selected by the F2 key 70 and storing the one-stitch data (hereinafter referred to as old pitchy needle data) before changing the embroidery pitch length 1 as shown in FIG. Sequential coordinate data A (XI, y
l ), B (x2.y2) and coordinate A
Calculate the coordinates of the line segment AB connecting (XI, yt) and B (X2.V2). Next, on the line segment AB, the origin coordinates A-(al, b) of one stitch data after changing the embroidery pitch length 1 (hereinafter referred to as new pitch needle data)
l) at a predetermined position.

(ii) After determining the origin coordinates A-(al, bl), calculate whether or not the second coordinate B'' (a2.b2) can exist on the line segment AB as shown below. do.

On the line segment AB of the old pitch needle data, as shown in Fig. 7, the second (7) coordinate B is the position where the origin coordinate A'' (at, bl) is moved by the new embroidery pitch length 1.
It is determined whether -(a2, b2) exists on the line segment AB or exceeds the line segment AB, depending on whether or not the following equation (1) is affirmed.

(x2-al)2 + (y2-bl)2≧
1...(1) x2...The second coordinate B(x2) of the old pitch needle data
．． y2) position data in the X-axis direction y2...position data in the y-axis direction of coordinate B (x2.y2) al...new pitch needle data origin coordinates A-(at, bl) in the X-axis direction Position data bl...Position data in the y-axis direction of coordinates A''' (al, bl)...New embroidery pitch length input using the F3 key Formula (1) creates coordinates 3-(a2°) on line segment AB b2 ) exists, calculate the coordinate B (a2 , b2 ) and convert it to the second coordinate 3 = (a2 , b2 )
I decide.

(iii) In process (11), the second coordinate B
(If it is determined that a2, b2> does not exist on the line segment AB, then read the third sequential coordinate data C(X3.V3> of the old pitchy needle data, and calculate the coordinate B(x
2. Calculate the coordinates of the line segment BC that connects y2) and C(x3.y3>. Next, on the line segment BC, the second coordinate 3' (a2°b2) ((B' ) is calculated based on the following equation (2).

ΔX...Unit movement amount in the X-axis direction (here 0.1m) ×3...Position data in the X-axis direction of the coordinate C (X3, V3>) y3...The position data of the coordinate C (X3.\3) Position data in the y-axis direction, ie, coordinates 3 (X2) as shown in FIG.

By moving y2) along the line segment BC, (2
) The point where the value obtained by the formula and the new embroidery pitch length 1 match is set as coordinate B=(a2, b2). Here, the coordinate B
Unit movement amount ΔX in the X-axis direction from (x2, y2)
(Here, move 0.1M>, and in the y-axis direction, line segment B
Movement amount △y (= (y3-1/
2)/(x3-x2)xΔX) and the origin coordinates A-(al, bl) are expressed as (
2) Calculate using the left side of the equation, and repeat until the calculated value becomes greater than or equal to the value of new pitch length 1 on the right side. Note that equation (2) is an equation for the case where the unit movement is ΔX in the good.

By using the formula for moving the unit movement amount Δy in the y-axis direction in this manner, calculation accuracy can be increased when the slope of the line segment BG changes more in the y-axis direction than in the X-axis direction.

(iv) In process (1ii), the second coordinate B
” (a2.b2) does not exist on the line segment BC, then read the sequential coordinate data D (X4.\4> of the 4th C of the old pitch needle data and perform the process (iii). repeat.

(V) By repeating the above processes (i) to (iv), as shown in FIG. ) is calculated.

The new pitch needle data calculated by the processes (i) to (V) described above are stored in the storage areas “#O” to “#9J” selected by operating the F1 key 68. When the calculation is completed, 1-CO
The PY mote routine ends on -d.

As a result, the new pitch needle data in the storage areas "#0" to "#9J" is referred to by the sewing execution routine (not shown), and the embroidery stitch of the new embroidery pitch type 1 is performed based on this data.

As described above, the embroidery sewing machine 1 of the present embodiment converts one stitch data of a predetermined embroidery pattern inputted from the paper tape reading device 15 into one stitch data having an embroidery pitch length of 1 inputted from the console panel 21. Then, a predetermined embroidery pattern is sewn based on the converted one-stitch data. Thereby, it is possible to change the embroidery pitch length 1 to a desired value while almost maintaining the embroidery pattern drawn by the read one-stitch data, and to unify the embroidery pitch length 1 to a uniform value.

As a result, the appropriate embroidery pitch length 1 and pitch number (number of needle groove points) can be easily determined depending on the material of the base material and the material to be sewn or welded to the base material (sequins, etc.). Moreover, it has an extremely excellent effect that it can be set quickly.

Therefore, changing the embroidery pitch length or making the pitch lengths equal is possible by using the original stitch data to create a new stitch without having to create new stitch data from the original embroidery pattern. This is accomplished by creating data.

Furthermore, even if the pitch length intervals in the original one-stitch data are rough, this embodiment can make the pitch lengths fine and uniform, reducing the number of man-hours for creating the one-stitch data. This has an extremely excellent effect of improving the quality of completed embroidery stitches.

Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented in various forms without changing the gist of the present invention.

[Effects of the Invention] The embroidery sewing machine of the present invention inputs sequential one-stitch data and one-pitch command value, and creates a desired embroidery pitch length while almost maintaining the embroidery pattern drawn by the input sequential one-stitch data. Since it is possible to create new sequential stitch data with the same pitch length and perform stitch sewing based on this data, it is possible to select the embroidery pitch according to the base material for stitching, embroidery thread, etc. becomes easier and faster. Therefore, the stitching of a desired embroidery pattern can be easily performed appropriately in accordance with various base materials and embroidery threads, which is an extremely excellent effect.

Furthermore, since the embroidery pitch lengths of the completed embroidery stitches are uniform, the occurrence of embroidery spots etc. is reduced and quality is improved, which is an excellent effect.

In addition, even if the sequential one-stitch data inputted from the outside is roughly created, the present invention can make it into detailed and uniform sequential one-stitch data, so the efficiency of creating the original sequential one-stitch data is improved. This has the excellent effect of reducing the number of man-hours.

[Brief explanation of drawings]

Fig. 1 is a block diagram illustrating the basic structure of an embroidery sewing machine according to the present invention, Fig. 2 is an overall block diagram of an embroidery sewing machine according to an embodiment, and Fig. 3
The figure is a block diagram of the control device, Figures 4 and 5 are explanatory diagrams of one-stitch data, and Figure 6 is the L executed by the control device.
- The flowchart of the COPY mode processing, and FIGS. 7 to 9 are explanatory diagrams of updating of one-stitch data. MA... Sewing needle, MB... Embroidery frame MC... Embroidery sewing machine, MD... Bar line calculation means ME.
...Embroidery pitch input means MF...Single stitch data update means 1...Embroidery sewing machine, 3...Sewing needle 5.7...Head, 9...Embroidery frame 11...Embroidery frame drive Part, 13...Control device 15...
・Paper tape reader

Claims (1)

[Scope of Claims] In an embroidery sewing machine that performs stitch sewing by inputting sequential single-stitch data indicating the relative sequential positions of a sewing needle and an embroidery frame, an embroidery pitch input means that inputs a command value for one pitch of the stitch sewing; An embroidery sewing machine characterized by comprising a stitch data updating means for sequentially updating stitch data.