JPH05269280A - Automatic embroidery device - Google Patents

Abstract

PURPOSE:To provide an embroidery device which can seam the obverse and reverse cloths in simple manner free from the deflection of the embroidery sewing between the contour sewing and the pattern embroidery. CONSTITUTION:An automatic embroidery device is equipped with a cloth frame 4 for holding a cloth, data input device 22 for taking in the embrodery data, frame driving device 23 for driving the cloth frame, sewing machine 24 for carrying out embroidery sewing, and a controller 21 which takes in the embroidery data and drives the frame driving device 23 and the sewing machine 24 in synchronization. An obverse cloth is tightened on the cloth frame and the pattern embroidery data of sewing is taken into the data input device 22, and pattern embroidery sewing is carried out. Then, a reverse cloth is fixed on the obverse cloth, holding the position of the cloth frame. Then, the contour sewing data is taken into the data input device 22, and contour sewing is carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an embroidery device, more specifically,
The present invention relates to an automatic embroidery device that performs embroidery while automatically moving a cloth frame based on embroidery data.

[0002]

2. Description of the Related Art Conventionally, when making a bag such as a stuffed toy or a hollow name tag with a sewing machine embroidery pattern, after the desired embroidery is applied to the outer cloth, the edges are joined together with the back cloth using hands. Sew. Then, turn the front and back cloth inside out to form a bag,
In the case of a stuffed toy, it was completed with a padding inside. Further, as the embroidery pattern of the bag or the like, pattern embroidery such as cross stitch can be applied. The size of the embroidery mosaic unit was about 2 to 3 mm.

[0003]

In the production of the above-mentioned stuffed animals, there may be a case where there is a deviation between the position of the pattern and the relative position of stitching, which is not preferable. Positioning in that case was a rather troublesome task. When pattern embroidery such as cross-stitch embroidery is performed as the embroidery pattern of the above-mentioned stuffed animals and bags, the size of the unit is about 2 mm at the smallest. However, when trying to perform mosaic embroidery with a pattern as shown in the photograph as faithfully as possible, the size of the above unit was too large. However, when the size, that is, the resolution is decreased, the number of stitches is extremely increased, and there is a problem that the "finished condition" of embroidery is not good.

The object of the present invention was made in view of the above-mentioned problems, and provides an embroidery device in which a pattern position and a relative position for stitching are less likely to shift when manufacturing a stuffed toy or a bag. To provide a pattern embroidery for performing pattern embroidery, it is possible to provide an automatic embroidery device that enables fine pattern embroidery with a small number of stitches.

[0005]

One of the automatic embroidery devices of the present invention is an automatic embroidery device for performing embroidery while automatically moving a cloth frame based on embroidery data. Embroidery data input device for fetching the second embroidery data of the contour sewing having a partially open portion corresponding to the embroidery data of No. 1 and the first embroidery data, and a frame for driving the cloth frame for holding the outer cloth in tension. After performing the pattern embroidery sewing on the driving device, the sewing machine that performs the above-mentioned sewing, and the table cloth that is tensioned on the cloth frame by the first embroidery data, the back cloth is fixed and mounted on the tensioned table cloth. The frame driving device and the automatic control device for driving and controlling the sewing machine to perform contour sewing of the front and back cloths according to the second embroidery data.

Further, one of the other automatic embroidery devices is an automatic embroidery device for automatically embroidering while moving a cloth frame based on embroidery data, and divides a desired pattern with grid lines at a predetermined pitch. While tracing the unit embroidery line between the intersections of the lattice lines in the contour line of the pattern and the contour embroidery line in which the length of the embroidery line in the contour portion of the pattern is equal to or less than the pitch of the lattice line, An embroidery data input device that captures pattern embroidery data for performing embroidery sewing with the intersection and the end point of the contour embroidery line as a needle drop point, a frame drive device that drives the cloth frame, a sewing machine that performs the sewing, and the pattern The frame drive device and the control device for driving and controlling the sewing machine are provided for performing embroidery based on the embroidery data.

[0007]

According to one embroidery device, after the pattern cloth is embroidered on the cloth tensioned on the cloth frame, the back cloth is fixed and the contour sewing is performed on the front cloth and the cloth cloth so that the pattern embroidery is exposed on the surface. Turn over the front and back cloth. Furthermore, another one embroidery device traces a unit embroidery line between intersections in a contour line of a pattern and a contour embroidery line in which the length of the embroidery line in the contour portion is equal to or less than the pitch of the grid line, Except for the contour portion, embroidery sewing is performed using the intersection as the needle drop point.

[0008]

The present invention will be described below with reference to the illustrated embodiments. First, FIG. 1 is a main block configuration diagram of an embroidery device according to a first embodiment of the present invention. This apparatus includes a cloth frame portion 25 that holds cloth, a data input device 22 that captures embroidery data and the like, that is, sequential needle drop point coordinate data, a frame drive device 23 that drives the cloth frame, and embroidery sewing. Sewing machine 24
The embroidery data is fetched, and the frame driving device 23 and the sewing machine 2
4 and the control device 21 that drives the motors 4 in synchronism with each other.

The operation of producing a stuffed toy by using the embroidery device will be described. First, as shown in FIG. 2 showing a state where the top cloth is attached, the top cloth 1 is attached to the cloth frame 4 of the cloth frame portion 25 by the inner frame 5. Zigzag embroidery 1a-1 which is a stuffed pattern embroidery
The first embroidery data of d is taken into the data input device 22, and the pattern embroidery 1a to 1d is sewn. After the embroidery is finished, the back cloth 2 is fixed to the front cloth 1 with the inner frame 6 or a clip-like shape as shown in the contour sewing state diagram of FIG. The second embroidery data of the contour sewing 1e having an opening D, a part of which is not sewn, is taken into the data input device 22 and the contour sewing 1e is performed. Then, remove the front and back cloths 1 and 2 from the cloth frame, and cut line LLa.
Cut out above. The cut out front and back cloths 1 and 2 are reversed from the opening D of the linear contour sewing 1e. FIG. 4 shows the inverted state. Insert cotton 3 or the like into the inside of the reversed front and back cloths 1 and 2 (see FIG. 5 which is a cross-sectional view taken along the line CC of FIG. 4).
Furthermore, the opening D is sewn together to complete the stuffed animal.
The sewing data of the contour sewing 1e is the pattern embroidery 1a-
This data has a predetermined relative positional relationship with the embroidery data for 1d stitching.

As described above, according to the present apparatus, the contour sewing 1
The front and back cloths 1 and 2 can be easily sewn together without shifting the stitches of e and the embroidery stitches of the pattern embroidery 1a to 1d. The device is not limited to the above-mentioned stuffed animals and can also be used to fabricate a bag or name tag in which embroidery is applied and front and back cloths are sewn together.

Further, as an embroidery which gives a stereoscopic effect of a modification of the sewing of the pattern embroidery 1a to 1d based on the first embroidery data, the embroidery method shown in the perspective view of FIG. 5 can be proposed. In order to perform this embroidery, first, the position coordinate data of the three-dimensional portion 10 is taken into the data input device 22, and the locus or contour is sewn on the outer cloth 1 fixed to the cloth frame 4 by linear stitching or the like. Then, the foam ink is manually applied on the locus. And
The zigzag contact sewing data shown in FIG. 5 is input, zigzag sewing 11 is performed, and the three-dimensional embroidery is completed. It is also possible to omit the straight line sewing process for the locus and drive the frame 4 along the locus by the frame driving device 23 to automatically apply the foaming ink. Alternatively, the cloth may be deformed into a convex shape and the corresponding portion may be embroidered. In addition, this embroidery is shown in FIG.
It can be performed by an automatic embroidery device having the structure shown in FIG.

Further, it is possible to propose a modification of the zigzag pattern embroidery 1a to 1d and a method for generating the embroidery data. This embroidery is also a pattern embroidery in which the embroidery line Lk shown in the pattern diagram of FIG. 6 is sewn as an alternative to the pattern embroidery based on the first embroidery data which is embroidered on the table cloth 1 of FIG. That is, the XY plane is divided by lattice lines Ci, Cj having a predetermined pitch and a predetermined pitch corresponding to even numbers of X and Y. Then, a desired figure is designated by a designated gradation, and a pattern G1 having a first density and a pattern G2 having a second density on the X and Y planes.
And The respective contour lines are Z1 and Z2. Then, the lattice lines inside the patterns G1 and G2 are made to correspond to embroidery lines. The embroidery data of this embroidery device is the pattern G.
It is embroidery data for stitching the embroidery line Lk along the grid line twice for the reciprocating path, with the intersection of the grid lines as the needle drop point for each of G1 and G2. It is assumed that the types of colored threads are different for the patterns G1 and G2.

The embroidery line will be described with reference to the pattern G1. The embroidery line is composed of a unit embroidery line, a contour embroidery line, and an additional embroidery line. As the unit embroidery line, an intersection point P1 of grid lines having intermediate points PP1, PP2, PP4 in the pattern G1,
The unit embroidery lines L1 and L2 having a predetermined length are applied between 2 and 3. Further, the contour embroidery line corresponds to the embroidery line L4 having a predetermined length between the intersection P4 and the end point P5 on the intersection corresponding to the end of the pattern having the intermediate point PP4. Further, although the additional embroidery line is in a position extremely close to the embroidery line L2 due to the pattern, L3 is added as the additional embroidery line in order to connect the separated embroidery line L4. Incidentally, one intersection P1 of the embroidery line L5 of the pattern G2 is common with the intersection P1 of the pattern G1.

Next, the process of generating the pattern embroidery data that traces the embroidery line of the above pattern will be described with reference to the flowchart of FIG. As the codes used in this processing, first, A (n) indicates the array of coordinate values of the needle drop point of the nth needle, and B (m) indicates the current value at the forward trip needle drop point registration count value m. This is a function that represents an array of coordinate values of the reaching points, and the backward needle drop point obtains A (n) by tracing this B (m) in reverse order. The above sequence is shown by the following equation. That is, A (n) = X + 100 · Y (1) B (m) = X + 100 · Y (2) Here, X and Y are the intersection points P which are needle drop points.
Indicates the coordinates of. However, the value of X is less than 100. Furthermore, D (add) is line data indicating the presence or absence of the embroidery line Lk corresponding to each XY coordinate, and is 3-bit data. The variable add is an address value of the data storage destination, is given in relation to the coordinates of the intermediate point, and is assumed to be add = Xpp + 100 · Ypp ... (3). Here, Xpp and Ypp are values of coordinates of the intermediate points PP1 and PP2 of the embroidery line Lk.

As for the format of the data, in bit 2, 1 indicates that there is an embroidery line, 0 indicates that there is no embroidery line, or that the bit has been registered in the array. Bits 1, 0 are
Give the hue and density data of the corresponding pattern. Therefore, D (add) = 000b is given to the line data in which the embroidery line does not exist on the pattern. The value indicated by b is a binary number. The unit,
As the line data for the contour and the additional embroidery line, the density value data is BBb, and D (add) = 1BBb is given. The density value data BBb is from 01b to 11
It is possible to classify into 3 types of b, and pattern embroidery with 3 colors of embroidery thread is possible. In the case of FIG. 6, BBb is given, for example, 01b and 10b for the patterns G1 and G2.

The pattern embroidery data generation process is performed using the above variables. As an example, the density value 1 in FIG.
Embroidery data for the pattern G1 of FIG. First, in step S1, the corresponding pattern is read. In step S2,
Pattern information, for example, the pattern G1 of density value 1 in FIG.
Data such as D (3 + 200) = 101b D (4 + 300) = 101b is registered as line data based on the coordinates of the intermediate points of the embroidery lines L1, L2, etc. For coordinates where no embroidery line exists, line data such as D (1 + 000) = 000b D (1 + 100) = 000b is registered. Next, the variables n and m are reset to 0, and the starting point is designated as the current needle drop point P. Figure 6
Then, the point P1 is designated. Further, the array A (0) of needle drop points for the X and Y coordinates of the current needle drop point P of the starting point is registered (steps S3, 4). In FIG. 6, A (0) = 2 + 400
To register. Then, the density value 1 connected to the current needle drop point P
Whether there is an embroidery line is checked counterclockwise in four directions (step S5). This check is performed by the line data D (a) corresponding to the intermediate point PP (Xpp, Ypp) in each direction.
It is checked with reference to the value of dd) whether the corresponding embroidery line exists.

If the corresponding embroidery line exists, the process proceeds to step S6, the values n and m are incremented, and the intersection point on the embroidery line is set as the next needle drop point P (for example, P2 in FIG. 6). The coordinates of the next needle drop point P are read as X and Y, and the array A (n) for that X and Y is registered. Further, A (n-1) is registered in the array B (m) of needle points on the outward path (steps S7 and S8). Then, the line data of the embroidery line is erased. For example, D (3 + 200) = 000b is set (step S9). Then, the process returns to step S5.

On the other hand, as a result of the check in step S3, 4
If there is no corresponding embroidery line in either direction, step S
Jump to 10. Normally, when jumping to this step, the state becomes after registering the following array B (m) at least once. Then, the value m is checked, and if the value is 0, it is determined that the data generation is completed, and this routine is ended. If the value m is not 0, the process proceeds to step S11 to start the return path registration, but first, the value n is incremented. In step S12, the coordinates X and Y of the next needle drop point are obtained from the array B (m). That is, X = B (m) MOD 100 Y = B (m) ¥ 100. Here, MOD is a remainder operator, and \ is an integer division operator. In addition, array A (n) has B (m)
The value of is taken in (step S13). The value m is decremented in step S14 and the process returns to step S5. The pattern embroidery data of this modification is generated as described above.
Then, using this embroidery data, it is possible to perform embroidery by the embroidery device shown in FIG. And the pattern embroidery of a more faithful pattern to the desired original pattern,
Moreover, it can be performed with a small number of stitches. Also,
Fewer jumps while sewing embroidery.

Next, a method of generating embroidery data for pattern embroidery, which is another modification of the zigzag embroidery 1a to 1d, will be described. This pattern embroidery includes embroidery lines L11 and L12 of two density patterns G10 and G20 which are in contact with each other in FIG.
Pattern embroidery such as reciprocating and sewing such as L21 and L22 is performed. The length of the unit embroidery line L11 between the intersections of the grid lines in the pattern G10 is equal to the pitch of the grid lines. However, L1 which is the contour embroidery line located on the pattern peripheral line Z10 or Z20
Lengths of 3, L21, L23, etc.
The length is half the pitch, which is shorter than the above pitch. That is,
Intermediate points PP13, PP23, etc. are set as end points of the contour embroidery line,
The end point is the needle drop point. Similarly, the contour embroidery line L
12, L22 are the outer peripheral lines Z10 and Z20 of the pattern,
It happens that the end point is at the intersection point because it passes near the intersection point P22, and the lengths of the contour embroidery lines L12 and L22 are equal to the pitch of the grid lines.

This embroidery data generation itself is almost the same as that of the above-described modification, but the line data format is different. That is, the line data of the embroidery line is DD (add)
, And the variable add is the intermediate point PP of the embroidery line as described above.
Is given in response to. The data has a 6-bit structure. Bits 5 to 3 indicate data on the embroidery line between the intersection P and the intermediate point PP closer to the origin, and bits 2 to 0 indicate data on the embroidery line between the intersection P and the intermediate point PP farther from the origin. Bits 5 and 2 give the presence / absence of the embroidery line, and bits 4 and 5 and bits 1 and 0 give the density value of the corresponding pattern. In the case of FIG. 7, the embroidery line L11 between the intersections P11 and P12 is given by DD (3 + 200) = 101101b. However, since the intermediate point PP11 of this embroidery line is within the same density pattern, it is not a needle drop point. Also,
Intersection P1 restricted by two patterns G10 and G20
The line data for the contour embroidery lines L13 and L21 between 1 and P21 is given by DD (2 + 300) = 101110b. However, since the intermediate point PP11 is a pattern of different density, it becomes the end point of both contour embroidery lines,
It becomes a common needle drop point. The embroidery lines L13 and L21 are embroidered with different colored threads. Further, the contour embroidery line L2 between the intersection point P21 and the intermediate point PP22 which is restricted by the contour line Z20.
The line data for 3 is given by DD (2 + 500) = 110,000b. The intermediate point PP22 is the end point of the contour embroidery line and is the needle drop point.

The embroidery data for each density of the gradation process in this modification is generated in accordance with the embroidery data generation flowchart shown in FIG. 8 while referring to the line data shown in the above example. Also in this modification, an embroidery line may be generated by adding an additional embroidery line to the embroidery line that is interrupted at a slight interval so that the embroidery data is connected. Further, in the case where a certain pattern has a minute pattern of different density, the minute part may be omitted. As described above, when embroidery is performed by the embroidery device of FIG. 1 using the embroidery data of this modification, the original pattern is
Fine embroidery with a closer pattern can be performed with a reduced number of stitches.

The embroidery data generation process shown in FIG. 8 can also be applied to the generation of line drawing embroidery data. That is, a line drawing is used as a pattern, data of a line drawing embroidery line corresponding to the embroidery line based on the line drawing is obtained, and an array A (n) following the line drawing embroidery line is obtained according to the flow of FIG. Further, by tracing the array A (n), linear stitch embroidery data having a predetermined pitch is obtained. In this way, the line drawing embroidery data can be generated.

[0023]

As described above, according to the embroidery device of the present invention, the front and back cloths can be easily sewn together without causing the stitches, the contour sewing of the bag and the embroidery stitches of the pattern embroidery to shift. In addition, another embroidery device of the present invention is
This has a remarkable effect that the embroidery pattern closer to the original pattern can be performed with a reduced number of stitches.

[Brief description of drawings]

FIG. 1 is a main block configuration diagram of an embroidery device showing an embodiment of the present invention.

FIG. 2 is a diagram showing a state where pattern embroidery is performed on the outer cloth by the embroidery device of FIG. 1;

FIG. 3 is a view showing a state in which a back cloth is fixed on the front cloth and contour sewing is performed by the embroidery device of FIG. 1;

4A and 4B are diagrams showing a state in which embroidery is performed by the embroidery device of FIG. 1, wherein FIG. 4A is a diagram showing a state in which the front and back are reversed after the contour sewing of the front and back cloth is performed; [Fig. 4] is a cross-sectional view taken along line CC of (A).

5 is a perspective view of an embroidery state showing a modified example of the embroidery method of the embroidery device of the embodiment of FIG. 1;

FIG. 6 is a diagram showing embroidery patterns and embroidery lines for generating pattern embroidery data in a modified example of embroidery data of the embroidery device of the embodiment shown in FIG. 1;

7 is a diagram showing an embroidery pattern and embroidery lines for generating pattern embroidery data of another modification of the embroidery data of the embroidery device of the embodiment of FIG. 1;

FIG. 8 is a flowchart of pattern embroidery data generation processing according to the modified examples of FIGS.

[Explanation of symbols]

1a, 1b, 1c, 1d ...... Pattern embroidery section (embroidery section based on first embroidery data) 1e ...... Contour stitch section (embroidery section based on second embroidery data) G1, G2, G10, G20 ... … Pattern L1, L2, L11 ………………………… Unit embroidery line,
Embroidery lines L4, L6, L12, L13, L21, L22, L23
………………………… Contour embroidery line, embroidery line L3 ………………………… Additional embroidery line,
Embroidery lines P1 to P4, P11 to P12, P21 ... Intersection points, needle drop points P5, P6, P22 .......... Intersection points, end points,
Needle drop point P13, P12 …………………… Middle point, end point, needle drop point PP1 to PP4, PP11 to PP22 …… Middle point

Claims (2)

[Claims] 1. An automatic embroidery device for performing embroidery while automatically moving a cloth frame based on embroidery data, wherein the first embroidery data for pattern embroidery sewing and the first embroidery data correspond to the first embroidery data. An embroidery data input device for taking in the second embroidery data of the contour stitch having an open portion, a frame driving device for driving a cloth frame for holding the outer cloth tightly, a sewing machine for performing the above sewing, and a cloth frame After the pattern embroidery sewing is performed on the taut outer cloth by the first embroidery data, the back cloth is fixed and attached on the taut outer cloth, and the contour sewing of the front and back cloth is performed by the second embroidery data. The frame drive device and the control device for driving and controlling the sewing machine are performed to perform the above, and the front and back cloth on which the pattern embroidery and the contour sewing are performed are turned over to expose the pattern embroidery on the surface. And an automatic embroidery device. 2. An automatic embroidery device for performing embroidery while automatically moving a cloth frame based on embroidery data, dividing a desired pattern with grid lines at a predetermined pitch,
While tracing the unit embroidery line between the intersections of the lattice lines in the contour line of the pattern and the contour embroidery line in which the length of the embroidery line in the contour portion of the pattern is equal to or less than the pitch of the lattice line, An embroidery data input device that captures pattern embroidery data that performs embroidery sewing with the intersection points and the end points of the contour embroidery line as needle drop points, a frame driving device that drives the cloth frame, the sewing machine that performs the sewing, and the pattern embroidery. An automatic embroidery device comprising: the frame driving device and a control device for driving and controlling the sewing machine to perform embroidery based on data.