JPH09279469A - Embroidering machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an embroidering machine enabling the accurate processing of a cloth without generating the mutual deviation of a printed pattern position and an embroidered pattern position by placing a cloth-extended embroidery frame between a pair of upper and lower print heads, applying a desired printing processing to the cloth, facing the embroidery frame to the lower surface of an embroidery head and subsequently applying a desired embroidering operation to the printed cloth. SOLUTION: In this embroidering machine provided with two print heads, an embroidery frame 7 having a processing cloth extended therein is horizontally moved in the directions of X-Y to place the frame between the vertically and mutually facxed print heads 3, 4. The movable head of the print head 3 on the front surface side is subsequently lowered to a place near to the processing cloth 13, and the movable head of the print head 4 on the back surface side is similarly raised to a place neat to the processing cloth 13. The frame 7 is moved in the directions of X-Y on the bases of print data, and inks are simultaneously jetted to the cloth the perform a prescribed printing operation. Then, the movable heads are allowed to refuse, and the embroidery frame 7 is moved to a place below an embroidery head 2, followed by driving a needle 9 in accordance with embroidery data to apply a prescribed embroidery treatment to the cloth.

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 performing not only embroidery processing on a work cloth but also print processing on the work cloth.

[0002]

2. Description of the Related Art Conventionally, as an embroidery sewing machine that performs embroidery processing and ink printing processing on a work cloth, Japanese Patent Application Laid-Open No. 5-27 is known.
There is one described in Japanese Patent No. 2086. In this embroidery sewing machine 80, as shown in FIGS. 12 and 13, a frame 82 is horizontally provided above a table 81, three embroidery heads 83 are arranged on the front surface of the frame 82, and a rear surface of the frame 82 is provided. Ink heads 84 are disposed at positions corresponding to the embroidery heads 83, respectively. A bed 86 having an upper surface flush with the table 81 is incorporated in the table 81.
Immediately above the embroidery frame 8 with a piece of work cloth 87 stretched
5 are provided.

During embroidery processing, the embroidery head 83
The embroidery frame 85 is driven under the pattern data based on the pattern data, and the embroidery head 83 performs embroidery processing. Further, at the time of print processing, the embroidery frame 85 is driven under the ink head 84 based on the pattern data, and the print processing is performed by the ink head 84.

[0004]

Generally, when a handkerchief, a curtain or the like is used for embroidering a material whose both sides are visible from the outside when using a handkerchief, a curtain, etc., not only the front surface but also the back surface of the work cloth stretched on the embroidery frame should be finished beautifully. Is required. For example, embroidery processing is performed by using embroidery threads of the same color for the upper thread and the lower thread. In order to finish both sides of the work cloth particularly beautifully, the upper thread and the lower thread may be entangled at an intermediate point in the thickness direction of the work cloth so that the embroidery looks even from both sides.
Then, in these cases, there is a need to print on both sides of the work cloth as well as the embroidery work.

However, the embroidery sewing machine 80 can print only on the surface of the work cloth 87 because the ink head 84 is provided only above the embroidery frame 85. If a print processing is to be performed on the back surface of the work cloth 87 which is spread only on the front surface of the embroidery frame 85, the work cloth 87 has to be turned over and re-laid on the embroidery frame 85, which is troublesome.

Further, in order to print on both sides, it is necessary to turn over the work cloth 87 and print separately on each side. Therefore, the time for printing the front and back sides and the time for turning over the work cloth 87 Is required, and printing takes a lot of time.

Further, in order to turn over and re-expand in this manner, a pattern in which an embroidery pattern and a print pattern are combined on both sides of the work cloth 87 is processed exactly according to the pattern data without the pattern positions of these patterns changing. Is difficult.

An object of the present invention is to solve the above problems and to easily and efficiently print on the front and back surfaces of a work cloth, and to combine an embroidery pattern and a print pattern on both sides of the work cloth. Another object of the present invention is to provide an embroidery sewing machine that can accurately process a pattern according to the pattern data without the pattern positions of these patterns changing.

[0009]

In order to achieve the above object, an embroidery sewing machine of the present invention is provided with a surface side print head for adhering a coloring material to the surface of a work cloth stretched on an embroidery frame, and the work cloth. A back side print head for adhering a coloring material to the back side is provided.

The method of providing the front side print head is not particularly limited, but the following modes can be exemplified. (1) A mode in which the embroidery head is provided on the front side, the rear side, the left side, or the right side. (2) At least two needles are provided at intervals in the embroidery head, and by simultaneously moving the needles, one needle selected from the needles is selectively arranged at a sewing position. In an embroidery sewing machine provided with a mechanism, a front side print head is provided in place of at least one of the needles.

(3) At least two needles are provided at intervals in the embroidery head, and by simultaneously moving the needles, one needle selected from the needles is selectively placed at the sewing position. In the embroidery sewing machine provided with the color changing mechanism, the side position of the needle at the outermost end of the needle and the position on the extension of the locus of movement of the needle,
A mode in which a front side print head is provided.

The method of providing the back side print head is not particularly limited as long as it is within the range of the table surface and the movable range of the embroidery frame, but is preferably provided at a position facing the front side print head. In the case of the above methods (2) and (3) of providing the print head on the front surface side, since it interferes with the hook at the position facing the print head, the print head is provided so as to be displaced from the hook, or the hook and the print head on the back surface are provided. The position is preferably switchable.

The kind of the front side or the back side print head is not particularly limited, and the ink jet method (the ink is jetted by a deforming force of a piezoelectric element or a foaming pressure of heated ink to be applied to a work cloth, A collection of characters, figures, symbols, etc.) and a thermal transfer method. The type of coloring material varies depending on the type of print head on the front side or the back side and is not particularly limited, but in the case of the ink jet method, dye ink, pigment ink, etc. can be exemplified, and in the case of the thermal transfer method, bonding of wax etc. An example of the melt transfer sheet is a film or the like coated with a dye ink or a pigment ink containing a material.

As a method of coloring the work cloth with the coloring material, a method of adhering only the coloring material of a desired color,
A subtractive color mixture method that represents various colors by combining and adhering three colors of cyan, magenta, and yellow can be exemplified. In the latter case, add black to the three colors,
The black portion is preferably made more vivid by using the black portion.

In the present invention, the "processed cloth" is not limited to the cloth made of fibers, but is a broad concept including natural / synthetic leather and resin sheets.

[0016]

1 to 8 show an embroidery sewing machine 1 embodying the present invention. In the embroidery sewing machine 1, as shown in FIGS. In addition, a multi-needle type embroidery head 2 and an ink jet type front side print head 3 for ejecting dye ink onto a work cloth
Are provided. In the table 12, a bed 5 having an upper surface flush with the table 12 is provided below the embroidery head 2, and a hole 8 is provided in the surface of the table 12 below the front side print head 3 in the hole 8. The back side print head 4 is inserted. An embroidery frame 7 on which a work cloth 13 is stretched is placed immediately above the bed 5, and a frame drive mechanism (not shown) is connected to the embroidery frame 7.

The embroidery head 2 is provided with a plurality of needles 9 through which an upper thread is passed, and one of the needles 9 is selectively selected to be vertically driven. By the needle 9 and the shuttle 6 built in the bed 5, stitches are formed on the work cloth 13 stretched on the embroidery frame 7. Work cloth 13
In order to finish both sides particularly beautifully, it is preferable that the upper thread and the lower thread are entwined at an intermediate point in the thickness direction of the work cloth 13 so that the embroidery looks even from both sides.

The front side print head 3 is provided with a movable head 10 at a lower end thereof, and the movable head 10 is lifted and retracted at the time of embroidery processing by a vertical drive mechanism (not shown).
At the time of print processing, as shown by the chain double-dashed line in FIG. 2, it descends and approaches the surface of the work cloth 13. The back side print head 4 also has a movable head 10 at the upper end.
The movable head 10 is lowered and retracted by an up-and-down drive mechanism (not shown) during embroidery processing, and is raised during printing processing as shown by the chain double-dashed line in FIG.
It is designed to approach the back side of. The movable heads provided in both print heads 3 and 4 are the same as the movable head 10 of the front side print head since they have the same structure as the surface of the table 12 and have the same vertical movement length.
Will be described only.

The movable head 10 includes cyan, magenta,
Yellow three color ink (dye ink or pigment ink)
Three cartridges (not shown) filled with
As shown in FIG. 6, three ink ejection mechanisms 17C, 17M and 17Y for ejecting the ink supplied from each cartridge to the work cloth 13 in a dot matrix form are provided.

Each ink ejecting mechanism 17C, 17M, 17Y
Is a predetermined number selected from 2 to 1024 (illustrative and not limited to this) as shown in FIG. Nozzles 18C, 18M, 18Y are arranged in parallel three rows. Each of the nozzles 18C, 18M, and 18Y ejects cyan, magenta, and yellow inks, respectively, and prints various colors on the work cloth 13 by the subtractive color mixing method using these three colors. .

The frame driving mechanism is a known mechanism, and moves the embroidery frame 7 in the front-rear and left-right directions (X-Y directions) based on the data.
Is configured to drive. During the embroidery process, the frame driving mechanism drives the embroidery frame 7 in the front-rear and left-right directions based on the embroidery data described later, and the embroidery head 2 drives the needle 9 up and down to extend the embroidery frame 7. The processing portion 25 of the work cloth 13 is embroidered with a predetermined design (FIG. 1). Further, at the time of printing, the frame driving mechanism drives the embroidery frame 7 in the front-rear and left-right directions on the basis of print data described later, and the front surface side print head 3 and the back surface side print head 4 eject ink, thereby Both sides of the work cloth 13 are printed with a predetermined design (FIG. 2).

The method for creating embroidery data and print data in this embodiment proceeds in the procedure as shown in FIG. A microcomputer (not shown) having a floppy disk drive and connected to a display, a keyboard, a digitizer, a mouse, etc. is used as a data creating apparatus used in this data creating method.

(1) Input of graphic data (step S4)
0) Input the contour data of the figure to be embroidered or printed into the data creating device by a digitizer, a mouse, an image scanner or the like.

(2) Attribute data input for each figure data (step S41) As attribute data for each figure to be embroidery processed,
Enter the needle and stitch specifications. Further, for each figure to be printed, as the attribute data, the designation of the figure on the front side, the figure on the back side or the figure on both sides, the designation of the color and the pattern, and the designation of whether it is the base pattern or not are inputted. .

(3) Creation of embroidery data and print data (step S42) The data creation device creates one-needle data from a contour data and a stitch of a figure for which embroidery processing is designated by a known method. To do. Further, with respect to the graphic for which the print processing is designated, the contour data and the attribute data are converted into a bitmap format represented by a set of dots according to the print resolution of the ink ejecting mechanism 17 for each of the front surface and the back surface. Convert. And
The print data for each horizontal movement of the embroidery frame is created by dividing the bitmap data for each of the front surface and the back surface into strip-shaped data having a dot width corresponding to the number of nozzles in the Y direction.

Based on the embroidery data and the print data created in this way, the embroidery sewing machine 1 first performs the base print processing on the front and back surfaces, then the embroidery processing, and finally the remaining front and back print processing. To do.

Next, the details of the operation of the ink ejecting mechanism 17 when printing the work cloth 13 will be described.
Since the ink ejecting mechanism 17 included in both print heads 3 and 4 is symmetrical with respect to the surface of the table 12 as described above, only the ink ejecting mechanism 17 of the front print head 3 will be described below.

FIG. 5 is a time-sequential view showing how the ink ejecting mechanism 17 ejects ink onto the work cloth 13 stretched on the embroidery frame which is moved to the right.
The case where the substantially rectangular range 27 shown by the chain double-dashed line is printed with one color in which cyan, magenta, and yellow are mixed at a constant ratio is shown.

First, as shown in, the embroidery frame 7 is moved so that the left ink ejecting mechanism 17C is located at the right end of the substantially rectangular area 27. Then, when the cyan ink is ejected by the ink ejecting mechanism 17C on the left side at this position, the cyan ink is linearly printed (lower leftward hatching).

Next, the embroidery frame is moved to the right while ejecting ink by the left ink ejecting mechanism 17C,
As shown in FIG. 7, when the central ink ejecting mechanism 17M reaches the right end position of the substantially rectangular range 27, magenta ink is ejected also by the central ink ejecting mechanism 17M, and the cyan printed by the left ink ejecting mechanism 17C is printed. The magenta ink is printed by being superimposed on the ink, mixed, or dispersed (hatching to the lower right).

Similarly to the above, the yellow ink is ejected by the ink ejecting mechanism 17Y on the right side (horizontal hatching), and the three color inks are overlapped, mixed, or dispersed as shown in FIG. The desired color is printed.

When the embroidery frame is further moved to the right and the left side ink ejecting mechanism 17C reaches the left end of the substantially rectangular area 27, the cyan ink ejecting by the left side ink ejecting mechanism 17C is stopped. Then, as shown in, the ejection of ink is similarly stopped in the other ink ejection mechanisms 17M and 17Y, and a series of print processing operations is completed.
The embroidery frame can be moved leftward for print processing, and the description is omitted because the case of moving rightward is symmetrical.

As described above, each time the embroidery frame is horizontally moved in the X direction, the ink jetting mechanism 17 can perform the band-shaped printing process having the dot width corresponding to the number of nozzles in the Y direction. Therefore, while shifting the embroidery frame in the Y direction for each dot width, this horizontal movement is repeated to print a desired figure on the work cloth 13. For example, when printing a filled circle, the ink ejecting mechanism 17
The locus shown in FIG. 6 is drawn on the work cloth 13.

Next, the embroidery sewing machine 1 of the present embodiment performs a series of operations when actually performing embroidery processing and printing processing.
The case where the patterns shown in FIGS. 7 and 8 are applied to the front surface and the back surface of the work cloth 13 will be described as an example. As shown in FIG. 7, the surface of the work cloth 13 has a substantially square base print pattern 2
0 and flower-shaped embroidery patterns 21 and 22 provided on a part of the base print pattern 20, and a circular print pattern 24 is provided at the center of the embroidery pattern 21. As shown in FIG. 8, a pattern of the same shape is provided on the back surface of the work cloth 13 so as to be back to back, and specifically, a substantially square base print pattern 25 and the embroidery pattern 21, The embroidery patterns 21a and 22a on the back surface of the
A circular print pattern 26 is provided at the center of the. The embroidery frame 7 of the embroidery sewing machine 1 is located below the embroidery head 2 in the initial state.

(1) Print processing of the base print patterns 20 and 25 First, as shown in FIG. 2, the embroidery frame 7 on which the work cloth 13 is stretched is horizontally moved to the right and between the print heads 3 and 4. Is located. Next, the movable head 10 of the front side print head 3 descends and approaches the work cloth 13, the ink ejecting mechanism 17 is positioned on the surface of the work cloth 13, and the movable head 10 of the back side print head 4 rises. Processing cloth 13
And the ink ejecting mechanism 17 is positioned on the back surface of the work cloth 13. Then, the embroidery frame 7 is driven in the XY directions based on the print data, and ink is ejected by the ink ejecting mechanisms 17, 17 of the print heads 3, 4 in synchronism with the embroidery frame 7 to form the base print pattern 20 on the surface. The base print pattern 25 on the back surface is printed at the same time. When the printing process is completed, the print heads 3, 4
The movable heads 10 and 10 are retracted to their original positions.

(2) Embroidery processing of embroidery patterns 21 and 22 As shown in FIG. 3, the embroidery frame 7 is moved below the embroidery head 2. Then, the needle specified by the embroidery data is selected, and the embroidery frame 7 is selected based on the embroidery data of the embroidery patterns 21 and 22.
Is driven in the XY direction, and in synchronization with this, the embroidery head 2
The needle 9 is vertically driven by the embroidery pattern 2
1, 22 are sequentially processed, and as a result, embroidery patterns 21a, 22a are applied to the back surface of the work cloth 13.

(3) Print processing of print patterns 24 and 26 The embroidery threads are colored by printing the embroidery threads of the embroidery patterns 21 and 21a. The print processing of the base print patterns 20 and 25 is performed. Same as the above, but do both sides simultaneously.

The series of operations of the embroidery process and the print process described above are merely examples, and the present invention is not limited to this. Therefore, the embroidery process and the print process can be freely combined.

Further, in the case where the front surface and the back surface of the work cloth 13 are printed as described above, the print patterns provided on the front surface and the back surface do not have to match back to back. For example, the front side and the back side differ depending on the method in which the front side print head 3 and the back side print head 4 eject ink based on print data of different patterns while moving the embroidery frame 7 in the XY directions. A print pattern can be provided. Furthermore, even if it is not processed simultaneously on the front and back,
After one side of the work cloth 13 is printed, the other side may be printed.

According to the embroidery sewing machine 1 of the present embodiment configured as described above, since the main embroidery sewing machine 1 also has the function of performing double-sided print processing, the work cloth 13 is used to perform the embroidery processing and the double-sided print processing. There is no need to re-install at all. Therefore, a pattern in which the embroidery pattern and the print pattern are combined on both sides of the work cloth 13 can be accurately processed according to the pattern data without the pattern positions of these patterns changing. Further, since the embroidery pattern can be colored by printing, it is possible to easily realize the embroidery of the pattern using multiple colors of which the number of stitches of the embroidery sewing machine is equal to or more. Therefore,
Even if the embroidery head is a single-needle type, by embroidering with a white thread and applying print processing on this embroidery,
It is possible to perform multicolored embroidery similar to a multi-needle type embroidery sewing machine.

Further, since the front side print head 3 and the back side print head 4 are provided, and both sides of the work cloth 13 can be printed without reworking the work cloth 13, the double-sided print processing can be performed efficiently. be able to.

Further, since the front side print head 3 and the back side print head 4 are provided facing each other, the work cloth 13 is formed.
It is possible to print on both sides simultaneously, and it is possible to further improve the efficiency of double-sided printing.

Further, since each ink ejecting mechanism 17 of the main embroidery sewing machine 1 is provided with a plurality of nozzles 18 and can perform the print processing of the dot width corresponding to the number of nozzles at a time, the embroidery frame 7 does not move much and prints at high speed. Processing can be performed.

The present invention is not limited to the configuration of the above-described embodiment, and may be embodied with appropriate modifications, for example, as described below, without departing from the spirit of the invention. (1) To increase or decrease the number of nozzles 18. (2) As shown in FIG. 13, each ink ejecting mechanism 17 is arranged in a straight line at the lower end of the movable head 45.

(3) As shown in FIG. 14 (a), the three nozzles 18 are arranged close to the lower end of the movable head 46,
Each nozzle 18 is used for cyan, magenta, and yellow ink, and the ink is ejected from each nozzle 18 toward one point as shown by the broken line in FIG. 14B. By doing so, since one dot of the print data can be processed at the same time, the movement of the embroidery frame can be reduced as compared with the case where the positions of the ink ejection destinations from the nozzles 18 are different.

Further, since the printing process is performed point by point, it is possible to drive the embroidery frame by using one stitch data for embroidery processing and perform the printing process. In particular, when the line drawing pattern is printed, the embroidery frame is moved so as to trace the line drawing pattern directly (for example, if it is a curve), the print data created by the method shown in FIG. 5 is used. As compared with the case where all lines are moved in order, the embroidery frame does not move much and printing can be performed at high speed.

(4) An ink ejecting mechanism in which the nozzles are linearly arranged in the X direction is used, and ink is ejected from the nozzles while moving the embroidery frame in the Y direction. (5) The nozzle can be rotated around an axis perpendicular to the work cloth surface, and the angle of the nozzle is rotated so that the movement of the embroidery frame is minimized according to the shape of the pattern, and the embroidery frame is driven. . For example, when a straight line drawn by being rotated by 45 degrees is printed, the nozzle is rotated by 45 degrees and the embroidery frame is driven in the direction of 45 degrees.

(6) Displacement between the ejection position of the front side print head and the ejection position of the back side print head. (7) The sewing method in the embroidery process is not particularly limited,
Any method such as lock stitch and chain stitch may be used.

[0049]

Since the embroidery sewing machine of the present invention is constructed as described above, according to the invention of claim 1, the front and back surfaces of the work cloth can be easily and efficiently printed. Further, there is an excellent effect that a pattern in which the embroidery pattern and the print pattern are combined on both sides of the work cloth can be accurately processed according to the pattern data without changing the mutual pattern positions.

According to the invention of claim 2, claim 1
In addition to the effect of the invention described above, the excellent effect that printing can be performed on both surfaces of the work cloth more efficiently is achieved.

[Brief description of drawings]

FIG. 1 is a front view of an embroidery sewing machine according to an embodiment of the present invention.

FIG. 2 is a front view showing an operation at the time of print processing of the embroidery sewing machine.

FIG. 3 is a bottom view of the front print head of the embroidery sewing machine.

FIG. 4 is a flowchart showing a method of creating embroidery data and print data of the same embroidery sewing machine.

FIG. 5 is a plan view showing an example of the operation of the ink ejecting mechanism during printing of the embroidery sewing machine.

FIG. 6 is a plan view showing another example of the operation of the ink ejecting mechanism.

FIG. 7 is a plan view showing a pattern provided on the surface of the work cloth by the embroidery sewing machine.

FIG. 8 is a plan view showing a pattern provided on the back surface of the work cloth by the embroidery sewing machine.

FIG. 9 is a bottom view of a modification of the print head of the embroidery sewing machine.

FIG. 10A is a bottom view of another modification of the print head of the same embroidery sewing machine, and FIG. 10B is an explanatory diagram showing a state of jetting dye from the print head.

FIG. 11 is a plan view of a conventional embroidery sewing machine.

FIG. 12 is a sectional view taken along line XII-XII of FIG. 11;

[Explanation of symbols]

 1 Embroidery sewing machine 3 Front side print head 4 Back side print head 7 Embroidery frame 13 Work cloth

Claims (2)

[Claims] 1. An embroidery sewing machine comprising a front print head for adhering a coloring material to the front surface of a work cloth stretched on an embroidery frame, and a back print head for adhering a coloring material to the back surface of the work cloth. 2. The embroidery sewing machine according to claim 1, wherein the front-side print head and the back-side print head are provided at facing positions.