JPH0632722B2 - Arbitrary character input device in sewing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for recording stitch position information of a lock stitch sewing machine.

[Prior art and its problems]

An example in which the stitch coordinate information is input by sequentially tracing the plane portion for designating the stitch position coordinates with a stylus or the like, for example, JP-A-53-15959.
There is an issue.

However, in the case of such a conventional one, although it is preferable as the information for forming the shape of a character of uniform thickness by stitches, the character line width such as a decorative character or a writing brush is preferable. It is not always appropriate to obtain the information for forming a character that changes appropriately, because the input operation becomes troublesome.

[Means for Solving Problems and Their Actions]

According to the present invention, the rectangular coordinate signal output means attaches the pen body, and the point of the pen body traces the average center line of the character line width in the material, whereby the movement locus of the point is sequentially converted into rectangular coordinates. The pen body is equipped with a grip, and when the grip is pushed toward the tip, the pointing points such as a pair of needle points center on the tip. As a way to open on a straight line along the material surface,
The direction of the straight line is adjusted by rotating the pen body, and by adjusting each pointing point to each contour of the character line, from the rectangular coordinates of the point to each pointing point on each contour. And a rotation angle signal indicating an inclination angle of a straight line connecting each designated point with respect to the rotation reference, are output from each of these signal output means, and the calculation means outputs the above-mentioned rectangular coordinate signal. , Set the needle entry points at the positions corresponding to the indicated points corresponding to the rectangular coordinates from the rotation angle signal and the opening signal, and set the needle entry points in the same manner as the rectangular coordinates move. Then, the stitches can be formed separately by setting these needle drop points to be executed alternately.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 10 is a schematic view of the structure of a sewing machine according to the present invention, the structure of which is disclosed in Japanese Patent Application Laid-Open No. 54-
It is the same as that shown in No. 120059. In the figure, each switching clutch attached to the sewing machine main body (1)
(2) (2) 'is operated by the selection dial (3), and in one switching state, each reciprocating rotation operation of each pulse motor (4) (4)' is oscillated in the lateral direction of the needle bar (5). The motion is transmitted as a cloth feed adjusting motion of the feed dog (6), and in the other switching state, the arm is moved.
(7) and the like are transmitted as a lateral (moving in the X direction) motion and a longitudinal (moving in the Y direction) motion of the folding frame (8). The shishiyuu frame (8) is removable, and is attached only when performing shishiyuu. Control circuit section
(9) is equipped with a micro computer, etc., which will be described later,
Swing of the needle bar (5), adjustment of the feed dog (6), and sushi frame (8)
Control each movement of.

FIG. 1 is an external view of the device of the present invention.
0) in the front-back direction of the figure (this is the Y of the frame (8) above).
A Y-direction moving body (11) movable in a Y direction) is attached to the Y-direction moving body (11), and the Y-direction moving body (11) is movable in the direction orthogonal to the Y-direction moving body (11). 12) is installed. The pen body (14) of the scanning pen (13) is rotatably attached to the X-direction moving body (12). The input device main body (10) has a flat touch panel (15) on its upper surface, and a material (16) such as printing paper is placed on the touch panel (15). As shown in FIG. 2, one end of the pen body (14) of the scanning pen (13) forms a pointed portion (17), and the other end of the pen body (14) has a gripping part (18) as an operating part. Has been. When no external force is applied, the pointed part (17) is close to the material (16), and if the gripping part (18) is lightly pushed downward in the figure, the X-direction moving body (12) moves in the Y-direction. The body (11) is used as a fulcrum to slightly rotate against the reaction force of a spring (not shown) so that the pointed head (17) presses the surface of the touch panel (15). The touch panel (15) is, for example, a catalog manufactured by NEC Corporation.
NO.PC-6051 is used. And output signal line (1
The moving positions of the X-direction moving body (12) and the Y-direction moving body (11) are sequentially extracted from 9) and (20) as Cartesian coordinate signals of the cusp (17).

The gripping part (18) enables linear movement in the vertical direction in the figure with respect to the pen body (14), is biased upward by a spring (21), and is moved to a predetermined position by a stopper (not shown). Is locked to.

The pair of pointing members (22) and (23) are pivotally supported on the pen body (14) by pins (24) as shown in FIG. 3, and one end of each pointing member (25) (2).
6), and the other end (27) (28) has an inclined part (2
9), which is abutted against it by a pair of springs (30), and usually the indicator points (25) (26) are equivalently aligned with the cusp (17) as shown. When the gripping part (18) is pushed further against the spring (21) from the lightly pressed state, the pointing points (25) and (26) move the movement lines (31) of the gripping part (18). In this case, it is designed to open on a circular arc line corresponding to the straight line (32) orthogonal to. The pointed head (17) is for tracing the average core line of the character line width of the bold letters (33) printed on the material (16) when used, and the pointing point (2
5) (26) is for tracing the outline of the character line in the same manner while changing the degree of opening according to the size of the character line width. A transmissive photosensor (34) is mounted inside the grip portion (18). On the other hand, when the detection body (35) is attached to the pen body (14) and the grip (18) moves up and down in the figure, the amount of light transmitted through the window (36) provided in the detection body (35) changes. Then, the photo sensor (34) detects this and outputs it as an opening / closing signal of the pointing points (25) and (26) from the output signal line (37).

The pen body (14) and the gripping part (18) are integrally rotatable with respect to the X-direction moving body (12) about the line of motion (31), and the transmissive photosensor (38) is provided with the pen body (14). The rotation angle is detected. Pen body
The detection body (39) is formed on (14), and the detection body (39) is the fourth
A window (40) is provided as shown in the figure, and the window (40) is rotated according to the rotation.
The amount of light passing therethrough changes, and the photosensor (38) detects it by using the relational position shown in FIG. 4 as a rotation reference and outputs it as a rotation angle signal from the output signal line (41).

The jump switch (42) is provided on the X-direction moving body (12) and is operated when the progress of stitches becomes discontinuous such as when the image of the character (38) changes. The jump signal is output from the output signal line (43) for the control described later.

FIG. 5 is a block diagram of the control circuit, the main elements of which are contained in the control circuit section (9) of the sewing machine. The central processing unit (CPU), the read-only storage device (ROM), the temporary storage device (RAM), and the input / output port (I / O) constitute a microcomputer and control each program. The rectangular coordinate signals X ₀ and Y _{0 in} the X and Y directions, the opening and closing signals Z, and the rotation angle signals θ output from the respective output signal lines (19) (20) (37) (41) are A It is converted into a digital value by the / D converter (A / D) and input to the microcomputer together with the jump signal JMP from the output signal line (43). Chimatrix
(KM) is configured by a pattern selection switch (not shown) provided on the sewing machine. The display drive unit (DV ₁ ) is a display unit (DISP) in which the operation results of each switch are separately provided on the sewing machine.
To be displayed. The motor drive unit (DV ₂ ) drives each pulse motor (4) (4) '. The speed control unit (SP) drives the sewing machine motor (M) separately provided in the sewing machine based on the operation of the sewing machine controller (CNT).

The coordinate storage operation in the above configuration will be described below.
Referring also to the zigzag coordinate formation explanatory view of FIG. 6 and the control flow chart of FIG. 7, in the data input program of FIG. 7A, when the start switch is operated separately, the program starts. When the scanning pen (13) is operated to change the rectangular coordinate signals X ₀ , Y ₀ or the rotation angle signal θ by a predetermined unit amount or more, these signals X ₀ , Y ₀ , θ and the separation signal Z are
It is stored while advancing the address to the storage location addressed by the code HL of these storage registers. Then, it is sequentially stored for each change of the predetermined unit amount or more. Each of the signals X ₀ , Y ₀ , θ, and Z is composed of a 16-bit code, and the data in each row of the table below is the data that determines the coordinates of each point (needle drop point).

When the jump switch (42) is operated, the rectangular coordinate signals X ₀ and Y _{0 at} that time are stored, and the opening / closing signal Z and the rotation angle signal θ are stored.
The storage location of is a vacant space, and it is 16 as a jump signal or a function signal FUNC that is a termination signal described later.
A code 0 of 16 bits is stored, and a code 2 of 16 bits indicating a jump signal is stored. Then, the vacant land is continuously provided as described above. When a separately provided end switch is operated, function code 0 and end signal EN
The code 1 consisting of 16 bits as D is stored, the vacant space is similarly provided, and then the process returns to the main loop.

The data processing program of FIG. 7 (B) is timely executed when the data input program is completed. Each of the stored data is read out, and if this is not function data, the rectangular coordinates of the point corresponding to each stitch corresponding position are calculated as follows. When the rotation angle signal θ has a negative value, θ ← 360−θ is calculated. Sixth
In the figure, the indicated points (25) and (26) are points (P ₁ ) with respect to the Cartesian coordinates (X ₀ , Y ₀ ) of the cusp (17) on the average core line (44).
Assuming that the separation distance is Z for (P ₂ ), and the rotation angle is θ with respect to the X-axis, the coordinates of the needle entry point (P ₁ ) are as follows: X = X ₀ +
(Z / 2) cos θ, Y = Y ₀ + (Z / 2) sin θ, and the coordinate of the next needle drop point (P ₂ ) is calculated by the following data group using the formula, X = X _0- It is calculated by (Z / 2) cos θ, Y = Y ₀ − (Z / 2) sin θ. These needle drop points (P ₁ ) and (P ₂ ) are calculated individually by alternately changing the flag F, and the result is stored.

In FIG. 6, each needle drop point is indicated by a circle. When the data of the opening signal Z is 0, X ←←
After the conversion of X ₀ and X ← Y ₀ , they are stored similarly. If this is a jump code as a result of the previous data reading, an operation for idling the shiiyu frame (8) is performed as a separate process. In the case of the end code, the calculated absolute coordinates X and Y are converted into absolute coordinates. When these calculations are completed, the process returns to the main loop.

FIG. 8 shows another embodiment of the scanning pen. Similar or common members to those of the scanning pen (13) are designated by the same reference numerals and their description is omitted. Pen body (14) ′ of scanning pen (45)
A parallel light beam is emitted from the light source with lens (46) above the lens toward the convex lens (47), and the fixed slit plate (48) and the gripping part (18) ′ shown in FIG. A moving plate (49) that moves to the left and right in the figure by directional movement is provided, and the triangular window (50) of the moving plate (49) and the slit (51) of the slit plate (48).
The luminous flux that passes through and the gripping part (1
8) 'is designed to illuminate with a separation width according to the movement. Pen body facing the reflective photo sensor (52)
The reflection surface of the (14) 'reflection surface has different reflectance depending on its rotational position, and the photosensor (52) detects the rotational angle based on the amount of light received.

〔The invention's effect〕

As described above, according to the present invention, when the point of the scanning pen is aligned with the average core line of the character line width and the scanning point is moved while the designated point follows the character contour while changing the pressure of the gripping part, the character line width is changed. Since each coordinate of the zigzag stitch corresponding to is automatically stored, the operation is simple and the data can be input quickly.

[Brief description of drawings]

FIG. 1 is an external view of an apparatus showing an embodiment of the present invention, FIG. 2 is a sectional view of a scanning pen, FIG. 3 is a sectional view taken along the line III-III of FIG.
FIG. 4 is a sectional view taken along the line IV-IV of FIG. 2, FIG. 5 is a block diagram of the control circuit, FIG. 6 is an explanatory view of forming zigzag coordinates, and FIG.
(A) and (B) are control flow charts, FIG. 8 is another embodiment of the scanning pen,
FIG. 9 is a view taken in the direction of the arrow IX in FIG. 8, and FIG. 10 is a structural schematic diagram of a sewing machine according to the present invention. In the figure, the Y-direction moving body (11) and the X-direction moving body (12) are the main elements of the rectangular coordinate signal output means, and the photosensors (34) and (34) 'are the main elements of the separation signal output means and the photosensor (38). (52) is the main element of the rotation angle signal output means, the central processing unit (CP
U) is the main element of the computing means.

Continuation of the front page (56) References JP-A-58-195937 (JP, A) JP-A-60-74015 (JP, A) Actually-opened Sho-60-87037 (JP, U) JP-B-47-30575 (JP , B1) JP-B-58-14711 (JP, B2) JP-B-61-11796 (JP, Y2)

Claims (1)

[Claims] 1. A pen body has one end formed as a pointed head for tracing an average core line of a character line width of a material, and is equivalent to the pointed head by operating an operating portion attached to the pen body. And a separation signal output means for outputting a separation signal according to the separation amount by providing an instruction point for the separation operation on one side and the other side unique to the pen main body around the position corresponding to , A material is placed, the pen body is rotatably attached with the tip facing the material, and the tip traces on the material to thereby trace the movement trajectory of the tip. Cartesian coordinate signal output means for decomposing into Cartesian coordinates and outputting the Cartesian coordinate signal, and a rotation angle with a predetermined relational position of the rotation of the pen body attached to the Cartesian coordinate signal output means as a rotation reference. Rotation angle signal output means for outputting a rotation angle signal corresponding to The coordinate signal is made to correspond to the coordinates of the average core line, and the rotation angle signal with respect to the rectangular coordinate signal and the opening / closing signal relating to the opening of the one core line are converted from the coordinates of the average core line to the needle on one of the character line contours. A corresponding distance to the drop point and a corresponding inclination with respect to the rotation reference relating to the needle drop point are calculated and at least the Cartesian coordinate signal fluctuates to a predetermined value or more, and this is calculated as the next average. Corresponding to the coordinates of the core wire, the rotation angle signal at that time and the opening signal relating to the opening of the other are given to the equivalent distance to the needle drop point on the other character line contour and the rotation related to the needle drop point. An arbitrary character input device in a sewing machine, which is provided with a calculating means for calculating a corresponding inclination with respect to a motion reference.