JPH082394B2 - Method of creating line drawing embroidery data for computer embroidery machine - Google Patents

Description

The present invention relates to a method of creating line drawing embroidery data used in a computer embroidery machine.

(Prior Art) In the conventional method of creating line drawing embroidery data used in a computer embroidery machine, the contour line of the original image is divided into appropriate lengths and the line segment is manually input with an input device such as a digitizer. Since it takes time to input data while considering the sewing order, it takes a long time, which is extremely difficult especially when the original image is complicated.

(Problems to be Solved by the Invention) The present invention intends to simplify the method for creating line drawing embroidery data used in a computer embroidery machine and to shorten the time for creating line drawing embroidery data.

(Means for Solving the Problems) In the present invention, the creation of the line drawing embroidery data used in the computer embroidery machine is performed by first storing the entire image of the original image and then based on the program stored in the internal computer storage unit. The entire image of the stored original image is automatically analyzed, and the embroidery data of the line segment having the length suitable for the line image embroidery and the intersections of both ends of each line segment are registered, and the cloth frame is driven based on the embroidery data. It allows you to quickly create line drawing embroidery.

(Operation) The present invention relates to a method of creating line drawing embroidery data used in a computer-controlled embroidery machine, which automatically or manually stores an original image in an X-YRAM which is a primary storage unit, and
-The original image data stored in YRAM is automatically analyzed by an arithmetic device to divide the original image into each line segment, and each line segment, the intersection of each line segment with another line segment, line type line width, line segment The point is that the embroidery data is created by automatically registering the point on the sewing start side, the number of embroidery lines, etc. in the second storage device.

(Examples) Examples of the present invention will be described below.

First, in the case of automatically inputting an original image 1 drawn by a line drawing as shown in FIG. 1, if it is read by using an automatic input device such as an image scanner 2, the interface is in the order of the solid line in the block diagram shown in FIG. 3 and arithmetic unit (CP
U) 4 is stored in the X-YRAM 5 via the
-Original image data stored in YRAM is again taken out by the arithmetic unit 4 and operated to be registered as embroidery data of the original image in the floppy disk 6 or the RAM 7 of the embroidery machine in the storage unit.

In the case of manually inputting the original image 1, for example, if it is read by a digitizer 8 (outside of which, a mouse, a light pen, etc.), it is possible to perform the same operation as in the case of the above-described automatic input through the interface 9 in the order of the dotted lines shown in FIG. After being stored in the X-YRAM 5, it is registered in the floppy disk 6 or the embroidery machine RAM 7. In the original image 1 shown in FIG. 1, the S portion is open for the end treatment of the line, but it is also possible to treat it with a continuous line.

The detailed process of creating the embroidery data of the line drawing after reading the original image 1 in FIG. 1 will be described below with reference to the block diagram shown in FIG.

As described above, when the automatic input device, that is, the image scanner 2 is used, the original image is converted into binary data [1 (or white) and 0].
(Or black)] to convert each part of the original image into a vector line, and then the embroidery diagram data is stored. If there is a difference in the line width, the size data of the line width can be automatically stored.

Further, when the manual input device, that is, the digitizer 8 is used, the operator traces the outline of the original image and the main lines on the inner side with the digitizer so that the embroidery diagram data is stored in the first storage portion and the size of the line width is also changed by the operator. Can be memorized by the operation of.

The intersections of all line segments are detected from the original image data stored in the X-YRAM, which is the first storage unit (see FIG. 4), and each intersection is detected.
Qa to Qh are registered in the floppy disk or the embroidery machine RAM, which is the second storage unit. Treat the dead end of a line segment (eg, Qh) as one intersection. Next, the line segments la to lk between the intersections are registered.

Each line segment la is shown in Table 1 (Table 1) in the second storage unit.
~ Lk, intersections Qa ~ Q of both ends of each line segment with respect to each line segment
h, locus data of each line segment (for example, broken line data of Δx: Δy), line width and the like are stored.

In addition, in Table 2 (Table 2) in the second storage unit, each of the intersections
A branch line for Qa to Qh is created by storing a line segment that branches in a counterclockwise direction based on an appropriate reference line (horizontal line).

Further, in Table 3 (Table 3) in the second storage unit, each line segment is
The number of times of embroidery for la to lk is registered, and the approach line segment (starting sewing side) lin and the line type K for each line segment la to lk are registered and created. Table 3 is created by proceeding with the program shown in FIG. 5, and shows the state currently being created.
The columns lf and lf indicate unregistered.

Further, the table 4 (Table 4) in the second storage unit is
The transmission order of the line segments is created by referring to Tables 2 and 3 and the order in which the line segments are satisfactorily and smoothly embroidered continuously is shown. In Table 4, the entry points for the line segments la to lk are created. The number of embroidery, line type, and line width are registered.

However, when registering the original drawing as shown in FIG. 1, wide is stored when the number of times of embroidery is 2 for a line segment having a thick line width. The area where wide is stored is embroidered in zigzag.

Next, FIG. 5 shows a block diagram in which a transmission order determining routine for determining the order of embroidery for each line segment is written, and the block diagram will be described below. N is a transmission order, P is the number of embroidery, K is a line type, l is a line segment, Qin is an entry point, S is a starting point, and each line segment is embroidered twice.

When creating the embroidery data, refer to the locus data stored in the table 1 (Table 1) for the breaking point coordinates of the broken line indicating the locus of each line segment, but refer to the table 4 for the approach direction to the line segment.
Is shown in the entry point Qin stored in the table 1, and the trajectory data differs depending on whether it matches the intersection point QI or the intersection point QII stored in the table 1. That is, when the approach point Qin = intersection point QI, the trajectory data is as described in Table 1 above (Δx ₁ , Δy ₁ ) → (Δx ₂ , Δy ₂ ) → (Δx ₃ ,
Δy ₃ ) → in the forward direction, but when approach point Qin = intersection point QII, the course is reversed and the trajectory data becomes (−Δx _n , −Δy _n ) →
The reverse direction is (−Δx _n−1 , −Δy _n−1 ) → (−Δx _n-2 , −Δy _n-2 ) →.

In the line drawing embroidery data of the present invention, how to sew lines is also registered. That is, G = 1 for drawing data to sew all line segments two times by the straight advance sewing to the switch SW, zigzag sewing for the outer contour line and wide curve, and drawing data for sewing the other for straight sewing G = 2 and G = 3 for drawing out data for sewing all line segments by zigzag sewing are provided.

Judgment of the sewing method by the selection operation of each switch before embroidery is discriminated by in or out displayed in the item of line type K of Table 4, and all straight embroidery, all zigzag embroidery, straight line and zigzag are appropriately adopted. Either embroidery can be selected and performed.

When any one of G = 1, G = 2, and G = 3 of the SW is selected, the embroidery data creation is as follows according to the order from N = 1 in Table 4.

When G = 1 (Registered by linear stitching sequentially from N = 1) (Linear stitching) (sequential) N = 1 (la) → N = 2 (lb) → N = 3
(Ld) → N = 4 (le) → ... When G = 2 (Registering sequentially from N = 1, but when P = 2 and K = out, and when b = wide, zigzag stitching, otherwise straight line) (Registered by sewing) (See Fig. 6) (Straight line sewing) (Sequential) N = 1 (la) → N = 2 (lb) → ...
(Reverse) N = 7 (lk) → (ZZ sewing) (Reverse) N = 8 (lj) →
(Straight line) (Reverse) N = 9 (lg) → (Forward) N = 10 (lh) →
(Forward) N = 11 (li) → (ZZ sewing) (Reverse) N = 12 (li) → ... G = 3 (Register from N = 1, but when P = 1, it is a straight line P = 2) (Zigzag sewing is used for all times) (Linear sewing) (Order) N = 1 (la) → (Order) N = 2 (lb) ...
(ZZ sewing) (reverse) N = 7 (lk) → (reverse) N = 8 (lj) →
(Straight stitch) (Reverse) N = 9 (lg) → ... (Effect of the invention) Since the line drawing embroidery data creating method of the present invention is as described above, if the original image is stored automatically or manually, the original image is obtained. Since the program stored in the microcomputer automatically analyzes each line segment and the transmission order, line thickness, type, etc. are registered to create the embroidery data, it can be performed very easily and quickly. I can. Therefore, according to the present invention, it is extremely easy to create data for embroidering a desired original image on a line, which is effective not only for an embroidering person but also for an embroidery operator.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an original image used in the embodiment of the present invention, FIG. 2 is a flow chart for storing the original image of the present invention, and FIG. 3 is an original image of the present invention. FIG. 4 is a flow chart for creating embroidery data, FIG. 4 is a diagram obtained by analyzing an original image of the present invention, FIG. 5 is a routine for determining a line segment transmission order for creating embroidery data of the present invention, and FIG. 6 is an embroidery of the present invention. FIG. 7 is a line segment locus diagram of Table 1 of the present invention, in which an embroidery work diagram in which one of the created data is selected and embroidered.

Claims (1)

[Claims] 1. A sewing machine provided with a needle attached to a lower end of a needle bar which is vertically moved by a drive device, and a thread catching portion which cooperates with the needle and catches a thread carried by the needle. A Y-axis that is configured to be capable of holding a work and that is perpendicular to the X-axis direction and the X-axis direction on the machine frame of the sewing machine by the drive unit.
An embroidery frame that can be driven in the axial direction, and XY of the embroidery frame
A method for creating embroidery data for a computer embroidery machine, which is provided with a data storage unit for storing control data for controlling axial drive, and stores an original image in X-YRAM and then in X-YRAM. The original image data is calculated by a calculation device, the original image is analyzed into line segments having intersections at both ends, and the transmission order is determined so that each line segment is continuously connected from a start point to a stop point, and a storage unit A method for creating line drawing embroidery data, in which the intersections of both ends of each line segment, the entry points of each line segment, the line type, the line width, and the number of times of embroidery for each line segment are registered.