JP3016887B2 - Method of forming shadow stitch on embroidery sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to an application of a sewing machine, and more particularly to a method of forming a shadow stitch on a sewing machine for forming a shadow stitch on a selected character, pattern, or the like.

[0002]

2. Description of the Related Art Shadow stitching is a method of forming a stitch of a shadow stitch portion 2 in the vicinity of a stitch of a surface stitch portion 1 such as an embroidered character as shown in FIG. The formed shadow stitches can give embroidery characters and the like a three-dimensional appearance. Conventionally, when performing shadow stitching with an embroidery sewing machine, shadow stitching is added to the surface stitches of characters, patterns, and the like to be embroidered.

[0003]

In the above-mentioned conventional example,
When performing shadow stitching with an embroidery sewing machine, as described above, it is necessary to add a shadow stitch portion of shadow stitching as necessary, and a plurality of types of shadow stitching can be performed on letters, patterns, etc. in any width and direction. If it can be performed, the time required to create the data becomes enormous, and the storage capacity required to store the created data becomes large, which is a practical problem.

[0004]

According to the present invention, first, in a sewing machine, the position of a selected character, pattern, or the like is shifted between a first shadow stitch and a second front stitch. The present invention also provides a method for forming a shadow stitch of a sewing machine for forming a shadow stitch including a shadow stitch portion and a surface stitch portion such as characters and patterns formed by lap stitching using threads of different colors.

[0005] Secondly, the present invention selects a shadow form in a sewing machine by setting a direction of shifting a position formed between a first character and a second character with respect to a selected character, pattern or the like as a direction in which a shadow can be formed. It is an object of the present invention to provide a method of forming a shadow stitch of a sewing machine in which a shadow stitch including a shadow stitch portion such as a character and a pattern and a surface stitch portion is formed by overlapping stitching.

Thirdly, in the present invention, in a sewing machine, a direction in which a position formed between a first character and a second character with respect to a selected character, pattern, or the like is shifted is integrated with a direction in which a shadow can be formed and an amount. An object of the present invention is to provide a method of forming a shadow stitch of a sewing machine in which a shadow stitch including a shadow stitch portion and a surface stitch portion such as a character and a pattern is moved and formed by overlapping stitching in which a shadow form is selected. It is.

Fourthly, in the sewing machine, a character, a pattern, and the like are selected by a pattern selection key group on the sewing machine, and the selected character, pattern, and the like are displayed on the display device. The start point of the second embroidery stitch is automatically set to a position shifted from the start point of the first embroidery stitch in response to the operation of one key, and the surface stitch portion is appropriately set by the overlap sewing. The present invention provides a shadow stitching method for a sewing machine in which a shadow stitch is formed by forming a shadow stitch portion in the direction of.

[0008]

According to the present invention, it is not necessary to newly create data for shadow stitching in order to perform shadow stitching. To perform shadow stitching, an embroidery pattern such as a character or a pattern is selected. Then, since the direction of the shadow stitching can be selected by operating a desired key from among a plurality of shadow stitching selection keys, the sewing data of the shadow stitch portion for the shadow stitching needs to be individually created. Compared to the conventional example, it takes less time and does not need to create new sewing data for the shadow stitching part, so the data storage capacity can be significantly reduced compared to the conventional example and the application range of embroidery sewing is greatly expanded. There is an effect that can be expanded.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A schematic configuration of a sewing machine First, a schematic configuration of a sewing machine will be described with reference to FIGS. In FIG. 3, the sewing machine 10 has an upper shaft
A needle bar 11 that is controlled to reciprocate up and down by (not shown) is attached to a carriage of an XY drive mechanism 12 (FIG. 5) that is driven and controlled in synchronization with the rotation of the upper shaft in the embroidery mode. A stitch is formed on the cloth set in the embroidery frame 13 so that embroidery can be performed.

In FIG. 4, an operation panel 15 on the front of the sewing machine has a pattern selection key group 20 for selecting characters, patterns, numbers, etc., and a plurality of shadow stitching selection key groups 3.
The operation key unit KEY1 including 0 and the like, an embroidery key 35 for specifying the embroidery sewing mode of the sewing machine, a normal sewing key 36 for specifying the normal sewing mode, a storage key 37 for registering the selected embroidery pattern, and the selected pattern are displayed. Function key portion KEY2 including a cancel key 38 for canceling
Are provided, and a display device LCD for displaying a selected pattern or the like is provided.

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 control program storage device ROM1 stores a control program of the sewing machine. The pattern storage device ROM 2 stores a plurality of pattern data selected in the normal sewing mode specified by the normal sewing selection key 36 and a plurality of embroidery sewing data selected in the embroidery mode specified by the embroidery selection key 37. It is remembered.

The start key 39 is an operation key for alternately driving and stopping the stitch forming mechanism 40 by the operation. That is, the start key 39 is a key having a function of operating the sewing machine when stopped when the sewing machine is stopped, and stopping the operation of the sewing machine when operated during operation. The display device LCD performs an instruction display and the like necessary for sewing at the time of selecting a pattern and after the selection. The stitch forming mechanism 40 as a stitch forming means includes the needle bar 11 driven and controlled by the sewing machine motor MM, a shuttle (not shown), and the like.

The XY motors XM and YM are driven by XY motor drive circuits XD and YD, and are switched by the switching mechanism 41 to control the XY drive mechanism 12 as the XY drive means in the embroidery mode. XY control is performed. The X motor XM is switched to control the stitch forming mechanism 40 by the switching mechanism 41 in the normal sewing mode.

The shadow stitching will be described below with reference to FIG. An example of an embroidery character and a pattern for performing shadow stitching will be described using an example of an alphabet “A”. In the figure, the start point S1 of the first embroidery stitch of the embroidery character "A" is defined as the coordinate origin (0, 0), and the coordinates of the start point S2 of the second embroidery stitch with respect to the start point S1 are represented by S2 (X , Y), the coordinates S2
(X, Y) can take any coordinates in a range where the first embroidery character (which becomes the shadow stitching portion 4) and the second embroidery character (which becomes the surface stitching portion 5) overlap. Yes, it is possible to perform any desired shadow stitching on the selected character, pattern, or the like.

For example, in the example of shadow stitching 1 shown in FIG. 6, the XY coordinates of the second start point S2 are X
= Xa (Xa is a negative value) and Y = Ya (Ya is a positive value). In the example of shadow stitching of the character string “AB”, the shadow stitching portion 4 has the surface stitching portion 5 as shown in FIG. Formed at the lower right of the

In the example of shadow stitching 2 shown in FIG. 8, the XY coordinates of the second start point S2 are X
= Xb, Y = Yb (Xb and Yb are positive values), and in the example of the character string “AB”, as shown in FIG.
Unlike the case 1, the shadow stitching portion 4 is formed at the lower left of the surface stitching portion 5 for the selected character, pattern, or the like. In addition to the shadow stitching 1 and the shadow stitching 2 described above, by selecting the coordinates of the second start point to be different from these coordinates, various types of shadow stitching can be performed.

An outline of control of the sewing machine when performing embroidery sewing and shadow sewing with the sewing machine will be described below.

1) Embroidery When embroidery is to be performed, for example, to embroider an embroidery pattern "AB", the embroidery key 35 is operated to set the embroidery mode, and then the pattern selection keys in the pattern selection key group 20 are set. When "A" is selected at 21 and the storage key 37 is pressed, "A" is displayed on the display device LCD, and then "B" is selected by operating the pattern selection key 21 again and the storage key 37 is displayed.
When "" is pressed, "AB" is displayed on the display device LCD. When the start key 39 is pressed in this state, the character "AB" is embroidered.

2) Shadow stitching As shadow stitching, for example, when shadow stitching is performed on the embroidery pattern "AB", the character "AB" is first operated by operating the pattern selection key 21 and the storage key 37 in the same manner as in the case of embroidery stitching. Is selected and stored, and "AB" is displayed on the display device LCD.

Next, the shadow stitching key 31 of the shadow stitching key group 30 is operated. When the start key 39 is pressed in this state, shadow stitching for the character "AB" is started, a first stitch of "AB" is formed, and the stitch is stopped after returning to the first start point. The LCD is instructed to change the color of the upper thread. When the sewing machine is started after replacing the upper thread with a different color from the first upper thread according to the instructions, the embroidery frame is different from the first start point with respect to the needle drop point in the second time. , The overlap sewing is performed from that position, and shadow sewing is formed. In this way, in general, by using a dark thread for the shadow stitching section 4 and a light thread for the surface stitching section 5, shadow stitching with a three-dimensional effect can be performed on the selected character or pattern. Can be formed.

Procedure for controlling the sewing machine 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 When the power is turned on, related memories and the like are set to an initial state. S2, S3 Select normal sewing or embroidery sewing with the mode selection key. When the normal sewing is selected, the process proceeds to S4 and thereafter, and when the embroidery sewing is selected, the process proceeds to S8 and thereafter.

1) Normal sewing mode (S4 to S7) S4, S5 A desired normal sewing pattern is selected by operating the keyboard in S4, the input state of the key is checked in S5, and the start key 3
Wait until 9 is pressed. When the start key 39 is pressed, the process proceeds to S6. S6, S7 The sewing in S6 is executed until there is a stop instruction by the stop key or the like in S7.
If there is a stop instruction, the process returns to S2.

2) Embroidery mode S8 A desired embroidery pattern is selected by operating the keyboard.

Shadow stitching 1 The input state of the S9 key is checked, and it is determined whether or not shadow stitching is 1 in S9. In that case, the process proceeds to S10 and thereafter, and if not, the process proceeds to S12. S10, S11 The input state of the key is checked in S10, and the process waits until the start key is operated. When the start key is pressed, shadow stitching 1 in S11 is executed. Details will be described later.

Shadow stitching 2 The input state of the S12 key is checked, and it is determined whether or not the shadow stitching is 2 in S12. In that case, the process proceeds to S13 and thereafter, and if not, the process proceeds to S15. S13, S14 Wait until the start key 39 is operated, and when the start key 34 is pressed,
The shadow stitching 2 of S14 is executed. Details will be described later.

Embroidery S15 The input state of the key is checked to determine whether the start key has been operated. When the start key is operated, the process proceeds to S16. S16 Perform embroidery of the selected embroidery pattern.

Control procedure for shadow stitching Hereinafter, a control procedure for shadow stitching will be described with reference to the flowchart of FIG. The shadow stitching 1 and the shadow stitching 2 are different from each other in the start point of the second stitching to be the surface stitching portion 5 but are similar in control. Therefore, the shadow stitching 1 will be described as an example of the shadow stitching. In the figure, Sn (n = 21, 22, 23...) Indicates steps of each processing.

S21 The stitching of the shadow stitching portion 4 of the shadow stitching 1 is executed until it is determined in S22 that the shadow stitching is completed. S23, 24 When the sewing of the shadow stitching section 4 is completed, the embroidery frame 13 returns to the first start point with respect to the needle drop point, the sewing machine stops, and an instruction to change the upper thread is displayed on the display screen of the display device LCD. Is displayed. It checks the input state of the S25 key and waits until the start key is operated.

S26 When the start key 39 is pressed, the embroidery frame 13 moves to the second start point position where the needle drop point is designated. S27, S28 The stitching of the surface stitch portion 5 (bright thread portion) of the shadow stitching in S27 is executed until it is determined that the sewing is completed in S28, and when the stitching of the surface stitching portion 5 is completed, the process returns to the main routine.

[0031]

As described above, according to the present invention, it is not necessary to create new data for shadow stitching in order to perform shadow stitching. After selecting the embroidery pattern, you can select the direction of shadow stitching by operating the desired key from the plurality of shadow stitching selection keys, so create the sewing data of the shadow stitch part for shadow stitching individually Compared to the conventional example, which requires the sew-on operation, there is no need to create new sewing data for shadow stitching, so the data storage capacity can be significantly reduced and the embroidery sewing can be performed. A remarkable effect is obtained such that the application range of can be greatly expanded.

[Brief description of the drawings]

 1 to 10 relate to an embodiment of the present invention,

FIG. 1 is a flowchart of a main control program of a sewing machine.

FIG. 2 is a flowchart of a subroutine program for shadow stitching control.

FIG. 3 is an external perspective view of the sewing machine.

FIG. 4 is a diagram showing a main part of an operation panel of the sewing machine.

FIG. 5 is a block diagram of a control circuit of the sewing machine.

FIG. 6 is a diagram showing movement of a start point of shadow stitching 1;

FIG. 7 is a view showing an embroidery result of shadow stitching 1;

FIG. 8 is a diagram showing movement of a start point of shadow stitching 2;

FIG. 9 is a view showing an embroidery result of shadow stitching 2;

FIG. 10 is a diagram showing the relationship between the first and second start points of shadow stitching.

FIG. 11 is a diagram showing an example of shadow sewing according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sewing machine 12 XY drive means 13 Embroidery frame 20 Pattern selection key group 30 Shadow stitching selection key group 40 Stitch forming means LCD display device ROM2 Pattern storage device S1 Start point of first embroidery sewing S2 Second embroidery sewing Starting point Patent applicant Janome Sewing Machine Industry Co., Ltd.

────────────────────────────────────────────────── (5) References JP-A-2-57288 (JP, A) Patent 2935760 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) D05B 19/00 -21/00

Claims (2)

(57) [Claims] An embroidery sewing machine for forming an embroidery seam on an embroidery cloth stretched on an embroidery frame attached to a carriage by a seam forming means having a needle which reciprocates up and down and forming a seam. A shadow stitch forming method comprising an eye and a shadow stitch, wherein a step of selecting a desired pattern for shadow stitching, a step of selecting a shadow form in which a shadow can be formed, and Forming a shadow stitch as the first embroidery stitch for the selected character, pattern, etc., moving the embroidery cloth by a desired amount according to the selected shadow form, and selecting the character, pattern, etc., for the embroidery cloth Forming a table stitch as a second embroidery stitch for the stitch, and superimposing the table stitch on the shadow stitch to form characters, patterns, etc. A method for forming a shadow stitch on a sewing machine, wherein shadow stitching is performed. 2. An embroidery sewing machine for forming an embroidery stitch on an embroidery cloth stretched on an embroidery frame attached to a carriage by means of a stitch forming means having a needle which reciprocates up and down and forming a stitch. A shadow stitch forming method including an eye and a shadow stitch, wherein a step of selecting a desired pattern for shadow stitching and a step of selecting a shadow form including a direction in which shadow can be formed and an amount of shadow are provided. Forming a shadow stitch as a first embroidery stitch for a character, pattern, or the like selected on the embroidery cloth; moving the embroidery cloth according to the selected shadow form; Forming a front stitch as a second embroidery stitch for the stitches, etc., by superimposing the front stitch on the shadow stitch, Method of forming a shadow sewing stitches of the sewing machine, characterized in that the shadow sewing.