JP2935760B2 - Shadow character sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to a shadow character stitch sewing machine capable of forming shadow character stitches with selected characters, patterns, and the like.

[0002]

2. Description of the Related Art As shown in FIG. 21, a shadow letter sewing is a thread having a darker color than a front sewing part in the vicinity of a seam of a surface sewing part 1 using a relatively bright thread such as an embroidery character. This is a sewing method for forming a stitch of the shadow stitching portion 2 using the shadow stitching. The thus formed shadow character stitching can give an embroidered character or the like a three-dimensional appearance. Conventionally, when performing shadow character stitching with an embroidery sewing machine, as a first method, there is a method of shifting the cloth set in the embroidery frame after finishing the sewing of the selected character once, and sewing the same again. As a second method, there is a method of individually creating and embroidering the stitch data of the shadow stitch portion 2 to the embroidery data as the surface stitch portion of each character or pattern to be embroidered.

[0003]

In the first method according to the prior art described above, it takes time and effort to shift the cloth by hand, and a high degree of skill is required to shift the cloth to an accurate position. In the second method according to the conventional example described above, when performing shadow character stitching with an embroidery sewing machine, as described above, each of the characters to be embroidered, each of the embroidery data of the pattern, etc., is formed by the shadow stitching unit 2 of the shadow character stitching. It is necessary to create and add a large amount of data for this purpose, and it takes time and effort to create the data. The required time is enormous, and the storage capacity required for storing the created data is also large, which is a practical problem.

[0004]

According to the present invention, there is provided a stitch forming mechanism having stitches which reciprocate up and down and forming stitches, and a storage device which stores embroidery data for a plurality of embroidery characters and patterns. A pattern selection device for selecting characters, patterns, and the like stored in the storage device, a display device for displaying the selected characters, patterns, and the like and instructions related to sewing, and a selected embroidery. An XY drive mechanism for controlling the relative position between the needle drop point of the needle and the embroidery frame based on the data, forming the stitch by performing XY control of the embroidery frame in synchronization with the upper shaft rotation of the sewing machine, and performing embroidery In the sewing machine, a shadow character stitching setting device for setting the type of shadow character stitching for forming shadow character stitching by the shadow stitching portion and the front stitching portion according to the selected character, pattern, and the like, and a shadow stitching portion. Heavy after formation A shadow character stitching control device for designating a start address of a front stitch portion to be sewn and sewn, wherein a shadow character stitch is formed by overlapping stitching of the shadow stitch portion and the front stitch portion. It can be solved by sewing machine.

The present invention also provides a stitch forming mechanism for forming a stitch having a needle which reciprocates up and down, a plurality of embroidery characters,
A storage device in which embroidery data for a pattern or the like is stored, a pattern selection device for selecting a character or pattern stored in the storage device, and a display or sewing related to the selected character or pattern. A display device for displaying instructions and the like, and an XY drive mechanism for controlling the relative position between the needle drop point of the needle and the embroidery frame based on the selected embroidery data, and the embroidery frame is synchronized with the upper shaft rotation of the sewing machine. In a sewing machine that forms stitches by performing XY control on a sewing machine and performs embroidery, a shadow character sewing setting device that sets the type of shadow character sewing for a selected character, pattern, and the like, and data of characters, patterns, etc. Equipped with additional data specified by the start address for shadow stitching, the start address of the shadow stitching section according to the type of shadow stitching, and the start of the front stitching section sewn after the shadow stitching section A shadow character stitching control device for designating a dress is provided, and after embroidering a shadow stitch portion, embroidering a front stitch portion and forming a shadow character stitch by overlapping stitching of the shadow stitch portion and the front stitch portion. It can be solved by the shadow character sewing machine.

Further, the present invention provides a stitch forming means for forming stitches having needles which reciprocate up and down, a pattern storage means for storing sewing data for a plurality of sewing patterns, and a selected embroidery data. XY driving means for controlling the relative position between the needle drop point of the needle and the embroidery frame attached to the carriage based on the XY control of the embroidery frame in synchronism with the upper shaft rotation of the sewing machine. In a sewing machine capable of forming and embroidering, a pattern selection key group for selecting characters and patterns, a display device for displaying the selected characters and patterns, and a first embroidery for the selected characters and patterns The start position of the second embroidery stitch is shifted from the start position of the second stitch within the range of the overlap stitching, and is composed of a plurality of shadow stitching selection keys to start the stitching by designating the staggering direction. A shadow stitching selection key group is provided, and a character or pattern formed by lap stitching by operating any one of the shadow stitching selection key groups is shaded by a shadow stitching portion and a surface stitching portion. It can be solved by the shadow character sewing machine.

Fourthly, the present invention provides a method for manually setting a sewing start point of a shadow stitch portion relative to a sewing start point of a front stitch portion when a shadow character stitch is specified for a selected character, pattern, or the like in a sewing machine. A shadow character sewing setting device and a shadow for controlling the movement of an embroidery frame in accordance with the manually set value of the sewing start point, and controlling the relative coordinates of the shadow start portion and the subsequent front stitch portion relative to the needle drop point of the sewing start point. The present invention provides a shadow character sewing machine which includes a character sewing control device, embroiders a front stitch portion after embroidering a shadow stitch portion, and forms a shadow character stitch by overlapping sewing.

[0008]

According to the present invention, firstly, it is not necessary to create a large amount of data for shadow character sewing in order to perform shadow character sewing. Create a relatively large amount of sewing data for the shadow stitch part individually in the data,
Compared to the conventional example which needs to be added, there is an effect that it takes less time to create data and the storage capacity of the data can be greatly reduced as compared with the conventional example. After selecting an embroidery pattern such as a character or a pattern, it is sufficient to select the type of shadow character sewing by operating a desired key from among a plurality of shadow character sewing selection keys. As a method, after selecting an embroidery pattern such as a character or a pattern, a shadow character sewing mode is designated, and the table sewing portion and the shadow sewing portion can be sewn in an arbitrary positional relationship by manual operation. There is an effect that the application range of can be greatly expanded.

[0009]

First Embodiment Schematic Configuration of Sewing Machine First, a schematic configuration of a sewing machine will be described with reference to FIGS. 2, the sewing machine 10 includes a needle bar 11 controlled to reciprocate up and down by an upper shaft (not shown), and an XY drive mechanism 12 (FIG. 1) in synchronization with the rotation of the upper shaft.
The XY control is performed on the carriage, and a stitch is formed on the cloth set on the embroidery frame 13 attached to the carriage to perform embroidery.

In FIG. 3, an operation panel 15 on the front of the sewing machine has a pattern selection key group 20 as a pattern selection device for selecting characters, patterns, numbers and the like, and a plurality of shadows as shadow character stitching setting devices. An operation key unit KEY1 including a character sewing selection key group 30 and the like, a storage key 47 for registering a selected embroidery pattern, and a function key unit KEY2 including a cancel key 48 for canceling the selected pattern and the like.
And a display device LCD for displaying a selected pattern or the like and displaying various instructions related to embroidery sewing including shadow character sewing.

The shadow character sewing selection key group 30 of the present embodiment includes:
As shown in FIG. 4, shadow character sewing selection keys 31 to 38 are provided.
Eighth shadow character sewing is designated.

Next, a schematic configuration of a control circuit of the sewing machine will be described with reference to FIG. In FIG.
Is a device for controlling the entire control circuit. The first storage device MEM1 stores a control program for performing various controls of the sewing machine, and the second storage device MEM2 stores embroidery data such as a plurality of characters.

The start key 40 is an operation key for alternately driving and stopping the stitch forming mechanism 12 by the operation. That is, the start key 40 is a key having a function of starting operation of the sewing machine when operated when the sewing machine stops, and stopping the operation of the sewing machine when operated during operation. The display device LCD displays a selected pattern or the like and various instructions related to embroidery sewing including shadow character sewing.

The stitch forming mechanism 16 includes the needle bar 11 driven and controlled by a sewing machine motor MM, a shuttle (not shown), and the like. The XY motors XM and YM are driven by an XY motor drive circuit to control an XY drive mechanism. The shadow character sewing control device 41 performs control related to shadow character sewing according to the shadow character sewing type specified by the shadow character sewing setting device 30.

Pattern Data Hereinafter, pattern data will be described with reference to FIGS. 5 and 6. Embroidery characters for performing shadow character sewing,
An example of the pattern will be described using an example of an alphabet “A”.

In FIG. 6, the embroidery character "A" has additional data for the first to fifth stitches whose head addresses are designated by a1 to a5 as shown in FIG. The stitch coordinates formed by the additional data of the first to fifth stitches correspond to the points m, l, k, j, and i of the stitch coordinates for the character “A” shown in FIG. 6 in this order. These additional data are common to other embroidery characters.

Formation of shadow character stitching The formation of shadow character stitching will be described with reference to FIG. 7 indicate the stitch coordinates of the shadow stitch portion to be performed first inside the parentheses, and the stitch coordinates of the front stitch portion to be performed second time outside the parentheses.

1) Shadow type sewing of type 1 The pattern "A" is selected by the pattern selection device 20, and, for example, a shadow type sewing selection key 31 of the group 30 shown in FIG. Select type 1.

Shadow stitching section The shadow character stitching control device 41 has a start address (hereinafter referred to as S).
A) is set to a3 (point k in FIG. 6), and the central processing unit CP
U recognizes that it is a type 1 shadow character sewing, displays on the display device LCD that type 1 shadow character sewing is to be performed, and informs the operator. When the start key 40 is pressed to start the sewing machine, the head address a1 (m in FIG. 6) of the data shown in FIG.
The sewing is started with the address a3 (point k in FIG. 6) offset from the point (point) by 2 as SA.

That is, as shown in FIG. 7, the current needle drop point is set to the k point, sewing of the shadow stitching section 4 is started from the k point, and when the sewing is completed, the sewing machine returns to the origin (point k). Then, a shadow stitching section end signal KE is sent to the shadow character stitching control device 41. Upon receiving the shadow stitching section end signal KE, the shadow stitching section control device 41 converts SA from a3 to a4 (point j in FIG. 6), the sewing machine stops, and the display device LCD displays an instruction to change the upper thread. Is displayed.

When the sewing machine is started by pressing the start key 40 after changing the upper thread, as shown in FIG. 7, SA is now set to a4, that is, the j point shown in parentheses in FIG. Sewing part 5
, And returns to the origin when sewing is completed, and the central processing unit CPU sends a sewing end signal EOS to the shadow character sewing controller 41. Upon receiving the sewing end signal EOS, the shadow stitching section control device 41 converts SA from a4 to a3.

The shadow stitching part 4 and the front stitching part 5 which are the origins of the sewing
Since the needle drop points have the same coordinates, as a result of the type 1 stitching, as shown in FIG. 7, the character is lit from the upper left and a shadow (dashed line portion) is at the lower right. In this way, in general, by using a dark color thread for the shadow stitching portion 4 and a light color thread for the surface stitching portion 5, a shadow character having a three-dimensional effect on the selected character or pattern can be obtained. Sewing can be formed.

2) Each type of shadow character sewing Type 2 is selected, and the result of executing shadow character sewing is shown in FIG. 8, the coordinates of the stitches of the shadow stitching portion to be performed first in parentheses and the stitch coordinates of the front stitching portion to be performed second time are shown outside the parentheses, as in the case of FIG. Is shown. In the figure, as a result of the type 2 sewing, the positional relationship between the shadow stitching portion 4 and the front stitching portion 5 is such that the character is illuminated from the lower right and the upper left has a shadow (broken line portion). .

The shadow character stitches of types 3 to 8 are different from each other only in the SA of each of the shadow stitch portions and the front stitch portions.
The control procedure is the same as that described above. FIG. 10 summarizes the SAs of the shadow stitch portions and the front stitch portions of types 1 to 8 and the corresponding stitch coordinate points in FIG.

4) Memory stitching When a plurality of characters are stored by the pattern selection device 20 and the type of shadow character stitching is selected for those characters by the shadow character stitching selection key 30, the same as in the case of a single character Is sewn.

For example, when the character "AA" is selected as a plurality of characters and type 1 is selected by the shadow character sewing selection key, the shadow character sewing control device 41 displays only the SA of the first character of the shadow sewing portion in FIG. The address a3 (k in FIG. 6) obtained by offsetting the head address a1 (point m in FIG. 6) of the data shown in FIG.
) Is SA, and the leading address of the subsequent characters is a5
(Point i in FIG. 6).

When the sewing of the shadow stitching section 4 is completed, the SA of the front stitching section is set to a4 (point j in FIG. 6), the upper thread is changed, and then the start key is pressed. Sewing is performed, and as in the case of a single character, as shown in FIG. 9, light is applied to the character from the upper left, and a type 1 shadow character sewing having a shadow (broken line portion) at the lower right is completed.

The procedure for controlling the sewing machine will be described below with reference to the flowchart of FIG. In the figure, Sn (n
..) Indicate the steps of each process.

S1 A desired embroidery pattern is selected by operating the keyboard. The input state of the S2 key is checked, and in S2, it is determined whether the type is shadow character sewing. In that case, the process proceeds to S3 and thereafter, and if not, the process proceeds to S5. S3, S4 The input state of the key is checked in S3, and the process waits until the start key is operated. When the start key is pressed, shadow character sewing 1 in S4 is executed. Details will be described later. After performing the shadow character sewing, the process returns to the state before the pattern selection in S1.

The input state of the S5 key is checked, and it is determined in S5 whether the type is the shadow character sewing type. In that case, the process proceeds to S6 and thereafter, and if not, the process proceeds to S8. In the process from S2 to S5, there is a process of checking whether the type is shadow character stitching type 2 to type 7, but illustration and description are omitted. S6, S7 Wait until the start key is operated, and when the start key is pressed, the shadow character sewing type 8 of S7 is executed. After performing the shadow character sewing, the process returns to the state before the pattern selection in S1.

The input state of the key S8 is checked to determine whether the start key has been operated. When the start key is operated, the process proceeds to S9. S
9 Perform embroidery of the selected embroidery pattern. After the execution of the stab and stitch, the process returns to the state before the pattern selection in S1.

Control procedure for shadow character stitching Hereinafter, the control procedure for shadow character stitching will be described with reference to the flowchart of FIG. The shadow character stitching type 1 to the shadow character stitching type 8 are different in SA of the shadow stitching portion 4 and SA of the surface stitching portion 5 but are similar in control. Will be described. FIG.
2, Sn (n = 11, 12, 13,...) Indicates a step of each process.

S11, S12 The sewing of the shadow stitching section 4 of the shadow character stitching type 1 is started from the designated SA, and is executed until it is determined in S12 that the shadow character stitching is completed. S13, 14 When the sewing of the shadow stitching section 4 is completed, the shadow stitching section end signal KE
Is output to the shadow character sewing controller, the SA is converted from a3 to a4, the embroidery frame 13 returns to the first start point with respect to the needle drop point, the sewing machine stops, and at the same time, the S An instruction to change the upper thread is displayed on the display screen.

S15 After changing the upper thread, the input state of the key is checked, and the process stands by until the start key is operated. S16 to S18 When the start key 40 is pressed, the sewing of the front stitching section 5 of the shadow character sewing type 1 is started from the designated SA a4 in S16, and the sewing of the front stitching section 5 is completed in S17. Execute until determined. When the sewing of the front stitching section 5 is completed, the front stitching section end signal EOS is sent to the shadow character sewing control device 41.
The SA is converted from a3 to a4, the embroidery frame 13 returns to the second start point with respect to the needle drop point in S18, the sewing machine stops at the position, and returns to the main routine.

[0035]

[Second Embodiment] The second embodiment is the same as the first embodiment with respect to the selection of shadow character stitching, but the control method of shadow character stitching is different from that of the first embodiment. That is, in the first embodiment, each pattern data includes additional stitch data for shadow character stitching for shadow character stitching, and the shadow character stitching control device 41 controls the shadow stitching section and the front stitching section. Shadow character sewing was performed by changing the SA.

On the other hand, in the second embodiment, each pattern data does not include the stitch data for shadow character sewing, and the shadow character sewing control device 41 performs sewing for the shadow sewing portion 6 and the front sewing portion 7. Shadow character sewing is performed by designating a plurality of frame movement data created in advance.

According to the second embodiment, for each type of shadow character sewing, the sewing start point of the front stitching portion coincides with the needle drop point set first, so that the positioning of the shadow character sewing with respect to the cloth can be achieved. It will be easier.

Frame Movement Data Frame movement data will be described with reference to FIGS. Frame movement data 1 to frame movement data 8 in FIG. 14 are movement amount data including the direction of the embroidery frame. When visually shown, in FIG.
The movement amount data is based on the relative coordinates indicated by arrows d1 to d8 for the needle drop point P in this order.

The formation of shadow character stitching The formation of shadow character stitching will be described with reference to FIGS. 1) Shadow character sewing of type 1 The pattern “A” is selected by the pattern selection device 20 and, for example, a selection key 31 in the shadow character sewing selection key group 30 shown in FIG.
Press to select shadow character sewing type 1. The shadow character sewing controller 41 (FIG. 1) transmits the frame movement data 6 at the address b6.
And the central processing unit CPU recognizes that the shadow character sewing type 1 is to be performed, displays on the display device LCD that sewing of the shadow character sewing type 1 is to be performed, and notifies the operator.

-Shadow sewing section When the start key 40 is pressed to start the sewing machine,
After moving the embroidery frame 13 by the frame movement data 6 of the address b6 shown in FIG. 14, the sewing is started, the shadow stitch portion 6 is sewn as shown by a dotted line in FIG. The device CPU sends a shadow stitching section end signal KE to the shadow character stitching control device 41. Upon receiving the shadow stitching section end signal KE, the shadow stitching section control device 41 moves the embroidery frame 13 in the opposite direction by the same amount as the movement before the start of the shadow stitching section by the frame movement data 2 at the address b2 shown in FIG. Then, the sewing machine is stopped, and an instruction for changing the upper thread is displayed on the display device LCD.

When the sewing machine is started by pressing the start key after changing the upper thread, the sewing of the front stitch portion 7 is started as shown by the solid line in FIG. 16, and when the sewing of the front stitch portion 7 is completed, The central processing unit CPU sends a sewing end signal EO to the shadow character sewing controller 41.
S is sent, and upon receiving the table stitching section end signal EOS, the shadow character stitching control device 41 stops the sewing machine at the position where the embroidery frame 13 returns to the sewing start point of the table stitching section 7 with respect to the needle drop point.

In general, by using a dark thread for the shadow stitching section 6 and a light thread for the surface stitching section 7, the result of the sewing is as shown in FIG. , The shadow character is sewn up with a three-dimensional effect as if there is a shadow (broken line portion) at the lower right.

The first embroidery character (becoming shadow stitching part 6) and the second embroidery character (being surface stitching part 7)
Means that it is possible to take arbitrary coordinates in a range where these overlap, and thereby it is possible to sew arbitrary shadow characters on the selected character, pattern or the like.

2) Shadow character stitching of types 2 to 8 Shadow character stitching of types 2 to 8 is performed in the same control procedure as that of type 1 except that the frame movement data of each shadow stitching portion and the front stitching portion are different. FIG. 17 shows the addresses of the frame movement data and the frame movement data of the shadow stitching portion and the front stitching portion of types 1 to 8 together.

3) Memory stitching Memory stitching is also possible as in the first embodiment.

The control operation of the sewing machine The main routine of the control operation of the sewing machine is the same as that of the first embodiment, but the control procedure of the shadow character sewing is different from that of the first embodiment. The description will be omitted, and only the control procedure of the shadow character sewing will be described.

Control procedure for shadow character stitching Hereinafter, a control procedure for shadow character stitching will be described with reference to the flowchart of FIG. The shadow character stitching type 1 to the shadow character stitching type 8 are different from each other in the start sewing coordinates of the shadow sewing portion 6 and the second sewing start coordinates of the surface sewing portion 7. As an example, an example of shadow character sewing type 1 will be described. In the figure, Sn (n = 21, 22, 23...) Indicates steps of each processing.

S21 In the case of the shadow character sewing type 1, the address b6 shown in FIG.
The embroidery frame 13 moves according to the frame movement data 6. S
22, S23 The sewing of the shadow stitching portion 6 of the shadow character stitching type 1 is started from the sewing start point after the movement of the embroidery frame, and is executed until it is determined in S23 that the shadow character stitching is completed.

S24, 25 When the stitching of the shadow stitching section 4 is completed, a shadow stitching section end signal KE is output to the shadow character stitching controller 41 in S24, and the embroidery frame 13 moves the stitching section 6 with respect to the needle drop point. The sewing machine stops at the position where the sewing machine has returned to the sewing start point.
An instruction to change the upper thread is displayed on the display screen of D.

S26 After changing the upper thread, the input state of the key is checked, and the process stands by until the start key is operated. S27 When the start key 40 is pressed, the embroidery frame 13 is moved in the opposite direction by the same amount as the previous frame movement data 6 by the frame movement data 2 of the address b2 shown in FIG.

S28 to S30 After the embroidery frame 13 is moved, the shadow character sewing type 1 in S28 is performed.
Is started from the set sewing start point and is executed until it is determined in S29 that the sewing of the front stitching section 7 has been completed. When the sewing of the front stitch portion 7 is completed, S30
To output the front stitching section end signal EOS to the shadow character sewing controller 41, the sewing machine stops at the position where the embroidery frame 13 has returned to the second sewing start point with respect to the needle drop point, and returns to the main routine.

According to the second embodiment, as apparent from the above description, for each type of shadow character sewing, the sewing start point of the table sewing portion 7 coincides with the needle drop point set first. Therefore, the positioning of the shadow character stitching with respect to the cloth is facilitated.

[0053]

[Third Embodiment] The third embodiment is the same as the second embodiment in the control method of shadow character sewing, but differs from the first and second embodiments in the operation of the main routine of the sewing machine. That is, in the first and second embodiments, after selecting a pattern, character, and the like by the pattern selection device 20 for selecting shadow character sewing, the shadow character sewing setting device 30 includes a plurality of shadow character sewing selection key groups, These shadow character sewing selection keys are used to select a shadow character sewing type.

On the other hand, in the third embodiment, there is no shadow character sewing selection key group in the shadow character sewing setting device 30 ', and by operating the shadow character sewing key 50 of the same device, the shadow character sewing is performed. A mode is set, and in this state, a desired shadow character sewing can be set by inputting a frame moving amount by manual operation.

According to the third embodiment, as in the case of the second embodiment, for each type of shadow character sewing, the sewing start point of the front stitch portion coincides with the first set needle drop point. Therefore, the positioning of the shadow character stitching with respect to the cloth is facilitated.

Further, according to the third embodiment, the positional relationship between the shadow stitching portion and the front stitching portion can be set to a desired relationship by manual operation, so that the application range of the embroidery sewing of the sewing machine is greatly improved. It is possible to expand.

Manual setting of shadow character sewing mode Manual setting of shadow character sewing mode will be described with reference to FIGS. The pattern "A" is selected by the pattern selection device 20, and the shadow character sewing mode shown in FIG. 19 is operated to select the shadow character sewing mode.

When the shadow character sewing mode is set, the shadow character sewing control device 41 'displays on the display device LCD that the shadow character sewing mode has been set, and the embroidery frame X and Y with respect to the shadow sewing portion of the shadow character sewing. A display prompting the user to input the amount of movement in the direction is performed.

For example, in the case of setting a shadow character sewing mode similar to the type 1 in the second embodiment, X = -a, Y = b (a and b are positive values) as the frame movement amount of the embroidery frame 13. By inputting a value in mm unit, in this case, a = b), the setting of the form of the shadow character sewing is completed. Prior to the start of the front stitching section, the embroidery frame 13 is controlled to move in the opposite direction by the same amount as that moved before the stitching of the shadow stitching section.

When the sewing machine is started by pressing the shadow stitch start key 40, the embroidery frame is first moved in the X direction.
After moving by b (a = b) in the a and Y directions, the stitching of the shadow stitching portion starts, and when the shadow stitching portion 6 is sewn, the central processing unit CPU sends the shadow stitching control device 41 'to the shadow stitching portion. Send the end signal KE.

In response to the shadow stitching section end signal KE, the shadow stitching section control device 41 'moves the embroidery frame 13 in the opposite direction by the same amount as the movement before the start of the shadow stitching section, and the needle drop point of the sewing machine. Returns to the origin (the needle drop point at the start of sewing in the shadow stitching portion) and stops, and the display device LCD displays an instruction to change the upper thread.

When the sewing machine is started by pressing the start key after changing the upper thread, the sewing of the front sewing section starts. When the sewing is completed, the central processing unit CPU sends the shadow character sewing control apparatus 41 '. When the sewing end signal EOS is sent and the sewing end signal EOS is received,
The shadow stitching section controller 41 'returns the sewing machine to the origin (the needle drop point at the start of sewing of the front stitching section), and the sewing machine stops.

In general, by using a dark thread for the shadow stitching portion and a lighter thread for the front stitching portion, the result of the stitching is likewise written on the character from the upper left as in the second embodiment. The shaded character stitches with a three-dimensional effect, such as a shadow at the lower right when exposed to light.

The above description is based on the manual setting of the shadow character stitching, where X = −a,
An example in which the form of shadow character sewing similar to the type 1 in the second embodiment is set by inputting the case of Y = b and a = b is shown.
The value of b can be set arbitrarily other than a = b.

Therefore, the embroidery characters of the first shadow stitching portion and the embroidery characters of the second front stitching portion can take arbitrary coordinates by manual input.
In addition to the shadow character stitching similar to the type 2 to 8 shadow character stitching in the second embodiment, the positional relationship between the shadow stitching portion and the front stitching portion is arbitrary for the selected character, pattern, or the like. Character sewing can be performed.

The procedure of controlling the sewing machine will now be described with reference to the flowchart of FIG. In the figure, Sn (n
= 31, 32, 33...) Indicate the steps of each process.

S31 A desired embroidery pattern is selected by operating the keyboard. The input state of the S32 key is checked, and it is determined whether or not shadow character stitching is designated in S32. If it is designated, the process proceeds to S33 and thereafter, and if not, the process proceeds to S36 and thereafter.

S33: According to the screen display, the size of the frame movement in the X and Y directions with respect to the shadow stitch portion of the shadow character stitch is input. S34: Wait until the start key 40 is operated. When the start key 40 is operated, the shadow character sewing in S35 is executed.

S35 The procedure of shadow stitching is the same as that of the second embodiment. When the shadow stitching section is completed, the shadow character stitching control device 41 'receives the shadow stitching section end signal KE and sets the embroidery frame. After moving the same amount in the opposite direction to the one moved for execution of the shadow stitching section, stop the sewing machine, display the upper thread change instruction on the display screen, and operate the start key again to operate the front sewing. The part is sewn and the shadow character is sewn.

S36: Check the input state of the keys. If it is not the designation of shadow character sewing in S32, it is determined whether the start key 40 has been pressed. If not, the process waits until a key is pressed. When the start key is pressed, embroidery is performed.

According to the third embodiment, as is apparent from the above description, as in the case of the second embodiment, for each type of shadow character stitching, the sewing start point of the front stitch portion is first set. , It is easy to position the shadow character stitch on the cloth. According to the third embodiment,
Since the positional relationship between the shadow stitching portion and the front stitching portion can be set to a desired relationship by manual operation, the application range of the embroidery sewing of the sewing machine can be greatly expanded.

[0072]

As described above, according to the present invention, it is not necessary to newly create a large amount of data for shadow character sewing in order to perform shadow character sewing. In comparison with the conventional example, which needs to separately create and add a relatively large amount of sewing data of the shadow stitching part to the data of the table stitching part,
There is an effect that no effort is required to create data, and the storage capacity of data can be significantly reduced as compared with the conventional example.
Secondly, in order to perform shadow character sewing, after selecting an embroidery pattern such as a character and a pattern, select the type of shadow character sewing by operating a desired key from among a plurality of shadow character sewing selection keys. Another way to sew shadow characters is to select an embroidery pattern such as a character or pattern, specify the shadow character sewing mode, and manually set the relative position of the front and shadow stitches to the desired position. , And a remarkable effect can be obtained, for example, the application range of embroidery can be greatly expanded.

[Brief description of the drawings]

 1 to 12 relate to a first embodiment of the present invention.

FIG. 1 is a block diagram of a control circuit of a sewing machine.

FIG. 2 is an external perspective view of a sewing machine.

FIG. 3 is a diagram showing a main part of an operation panel of the sewing machine.

FIG. 4 is a diagram showing shadow character sewing selection keys on the operation panel of the sewing machine.

FIG. 5 is a diagram showing a memory map of embroidery data;

FIG. 6 is a diagram visually showing the embroidery data of FIG. 5;

FIG. 7 is a diagram showing type 1 sewing of shadow character sewing;

FIG. 8 is a diagram showing a type 2 sewing of shadow character sewing;

FIG. 9 is a diagram showing embroidery stitching of type 1 of shadow character stitching for memory stitching;

FIG. 10 is a diagram showing start addresses of a shadow stitching section and a table stitching section for each type of shadow character stitching.

FIG. 11 is a flowchart of a main control program of the sewing machine according to the first embodiment.

FIG. 12 is a flowchart of a subroutine program for shadow character sewing control according to the first embodiment. 13 to 17 relate to a second embodiment of the present invention.

FIG. 13 is a flowchart of a subroutine program for shadow character sewing control according to the second embodiment.

FIG. 14 is a diagram showing a memory map of frame movement data;

FIG. 15 is a diagram visually showing the frame movement data of FIG. 14;

FIG. 16 is a diagram showing a type 1 sewing of shadow character sewing;

FIG. 17 is a diagram showing frame movement data of a shadow stitching portion and a front stitching portion for each type of shadow character stitching. FIG.
FIG. 20 relates to a third embodiment of the present invention,

FIG. 18 is a block diagram of a control circuit of the sewing machine according to the third embodiment.

FIG. 19 is a diagram showing a main part of an operation panel of the sewing machine.

FIG. 20 is a flowchart of a main control program of the sewing machine according to the third embodiment.

FIG. 21 is a diagram showing an example of shadow character sewing according to a conventional example.

[Explanation of symbols]

4, 6 shadow stitching section 5, 7 front stitching section 10 sewing machine 12 XY drive mechanism 13 embroidery frame 16 stitch forming means 20 pattern selection key group as pattern selection device 30 shadow character stitching selection key group as shadow character stitching setting device 40, 40 'Shadow character sewing control device 50 Shadow character sewing key as shadow character sewing setting device LCD display device MEM2 Second storage device in which embroidery data is stored

Claims (3)

(57) [Claims] 1. A stitch forming mechanism having a needle that reciprocates up and down to form a stitch, a storage device storing embroidery data for a plurality of embroidery characters and patterns, and a storage device storing the embroidery data. A pattern selection device for selecting characters, patterns, etc., which are present, a display device for displaying the selected characters, patterns, etc., and instructions related to sewing, etc., and the needle drop of the needle based on the selected embroidery data. An XY drive mechanism for controlling the relative position between the point and the embroidery frame is provided. The sewing machine performs XY control of the embroidery frame in synchronism with the upper shaft rotation of the sewing machine to form a stitch, and is selected for a sewing machine that performs embroidery. A shadow character stitching setting device for setting shadow character stitching for forming shadow character stitches comprising a shadow stitch portion and a front stitch portion according to characters, patterns, etc. Surface stitching part A shadow character stitching control device for designating a start address is provided, and after embroidering the shadow stitch portion, embroidering the front stitch portion and forming a shadow character stitch by overlapping stitching of the shadow stitch portion and the front stitch portion. Characterized stitch sewing machine with shadow. 2. A stitch forming mechanism having stitches which reciprocate up and down to form stitches, a storage device storing embroidery data for a plurality of embroidery characters and patterns, and a storage device storing the embroidery data. A pattern selection device for selecting characters, patterns, etc., which are present, a display device for displaying the selected characters, patterns, etc., and instructions related to sewing, etc., and the needle drop of the needle based on the selected embroidery data. An XY drive mechanism for controlling the relative position between the point and the embroidery frame is provided. The sewing machine performs XY control of the embroidery frame in synchronism with the upper shaft rotation of the sewing machine to form a stitch, and is selected for a sewing machine that performs embroidery. A shadow character sewing setting device that sets the type of shadow character sewing for characters, patterns, etc., and a start address of the shadow sewing part and sewing after the shadow sewing part using additional data corresponding to the set type of shadow character sewing. A shadow character stitching control device for designating a start address of a table stitch portion to be embroidered is provided. A stitching sewing machine for forming a shadow character. 3. A stitch forming means having a needle which reciprocates up and down to form a stitch, a pattern storage means storing stitch data for a plurality of stitch patterns, and the embroidery data based on the selected embroidery data. XY driving means for controlling the relative position between the needle drop point of the needle and the embroidery frame attached to the carriage, and the embroidery frame is moved in synchronization with the rotation of the upper shaft of the sewing machine.
In a sewing machine capable of forming a stitch by performing Y control and performing embroidery, a pattern selection key group for selecting characters and patterns, a display device for displaying the selected characters and patterns, and a selected character and pattern A shadow stitching key that enables the input of the start address of the shadow stitching portion and the start address of the front stitching portion to be sewn after the shadow stitching portion, and the start of the shadow stitching portion by operating the shadow stitching key and inputting the position. A shadow character stitching control device for designating an address and a start address of a front stitch portion to be sewn after the shadow stitch portion is provided. After embroidering the shadow stitch portion, embroidering the front stitch portion, the shadow stitch portion and the front stitch portion. Forming a stitched stitch by a double stitching.