JP2650250B2 - Automatic sewing machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sewing machine, and more particularly to an automatic sewing machine capable of sewing a stitch pattern such as various characters and symbols.

(Prior art) Conventionally, in this type of sewing machine, a desired stitch pattern can be selected from a large number of prepared stitch patterns such as characters and symbols.
Furthermore, since the editing of such stitch patterns such as enlargement / reduction or rotation / reversal is possible, the final sewing area is very flexible. Therefore, in the editing stage, first confirm that the sewing area is within the set area that has been set, and furthermore, place the needle bar in the needle-up stopped state before actually starting the sewing to perform the actual sewing operation. A test mode for performing the following operation is provided, whereby the sewing area for the work cloth is confirmed.

(Problems to be Solved by the Invention) However, in this test mode, since the needle bar is located above the work cloth at a certain distance from the work cloth, it is very difficult to confirm the actual sewing position. There was a problem.

(Object of the Invention) An object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to provide an automatic sewing machine in which a sewing area can be checked very easily by anyone. .

(Means for Solving the Problems) The present invention provides a stitch forming means for forming a stitch on a work cloth provided with a needle which moves up and down, a work cloth holding means for holding the work cloth, and the needle based on sewing data. An automatic feeder for changing a relative position between the sewing machine and the work cloth holding means; and a test mode setting means for setting a test mode for checking a sewing area periphery or a sewing path based on the sewing data before sewing. In the sewing machine, irradiation means for irradiating the work cloth with the instruction light, irradiation instruction position moving means for enabling relative movement between the instruction light from the irradiation means and the work cloth holding means, and the test mode is set. When done
Drive control means for driving the irradiation instruction position moving means based on the sewing data and instructing the outer periphery of the sewing area or the sewing path by the instruction light.

(Operation) With the above configuration, when the test mode is set by the test mode setting means, the drive control means drives the irradiation instruction position moving means based on the sewing data, and instructs the outer periphery of the sewing area or the sewing path. As a result, the irradiating unit issues an irradiation instruction to the outer periphery of the sewing area or the sewing path.

(Embodiment) An embodiment in which the present invention is embodied in an embroidery sewing machine will be described below with reference to FIGS.

A sewing machine frame 3 including an arm 3a and a bed 3b is provided on a work cloth supporting surface 2 of the sewing machine table 1. On the right side of the arm 3a, a sewing machine motor 4 for rotating and driving a sewing machine main shaft (not shown) is mounted. On the left side of the arm 3a, a needle bar 6 having a needle 5 at a lower end and being moved up and down with rotation of the main shaft of the sewing machine is mounted. A bed (not shown) for forming a stitch on the work cloth on the work cloth support surface 2 in cooperation with the needle 5 is built in the bed 3b so as to face the needle 5. The stitch forming main body is constituted by cooperation of the needle 5 and the needle 5.

A light emitting device 7 as an irradiating means attached to the needle bar 6 is composed of an LED, a semiconductor laser, or the like, and a condenser lens (not shown) is attached to a light emitting side thereof. The light is focused on the needle drop point on the cloth W.

Below the needle 5, on the work cloth support surface 2, a feed device 8 as an irradiation support position moving means is provided.
The feed device 8 has a mounting arm 9 that is moved in the front-rear direction (Y direction) and the left-right direction (X direction) by a pair of pulse motors (not shown) that are driven to rotate in synchronization with the vertical movement of the needle 5. Embroidery frame provided as work cloth holding means
10 is installed.

Next, an electrical configuration will be described. A central processing control device (hereinafter, referred to as a CPU) 12 as drive control means is provided in a control box 13 of the embroidery sewing machine, and a program memory 14 composed of a ROM and a working memory composed of a RAM. 1
5 and are connected. The program memory 14 has a data editing program for creating sewing data by combining various embroidery patterns, a data registration program for storing the data on a floppy disk, and a sewing program based on the stored data. And an area setting program for setting an embroidery range. The CPU 12 has an input / output interface 17
And a drive signal is output to the sewing machine motor 4 via the sewing machine motor drive circuit 26. Therefore, the sewing machine motor 4
As a result, the sewing machine main shaft is driven to rotate, and the stitch forming means is operated.

In the vicinity of the sewing machine motor 4, the arm 3a is provided with a detection device 16 for detecting a needle upper position corresponding to the upper dead center of the needle 5 and a needle lower position corresponding to the lower dead center of the needle 5, A detection signal output from the detection device 16 is input to the CPU 12 via the input / output interface 17. Then, the CPU 12 outputs a drive signal to a pair of pulse motors (not shown) of the feeder 8 via the input / output interface 17 and the drive circuit 25 based on the detection signal. Thereby, the feeder 8 is operated in a state where the needle 5 has come out of the work cloth W upward. Further, in the sewing area setting mode, the CPU 12 controls the input / output interface based on a signal input based on the operation of the jog key 23.
A drive signal is output to a pair of pulse motors (not shown) of the feeder 8 via the drive circuit 17 and the drive circuit 25. Thereby, the feeder 8 is operated in a state where the needle 5 has come out of the work cloth W upward.

On the upper surface of the control box 13, a test key 22,
An input board 19 including a key arrangement section 18 including a jog key 23, an execution key, a data input key, an edit key, and the like is provided. Sewing data input is performed by various key inputs on the input board 19. The display device 20 provided on the input board 19 is driven for display by a display device drive circuit 21 that operates based on a display control signal output from the CPU 12 via the input / output interface 17. Further, the CPU 12 has a floppy disk drive via an input / output interface 17.
A floppy disk (not shown) is detachably mounted on the floppy disk drive 24. The floppy disk stores sewing data corresponding to code data of various embroidery patterns including various kanji, hiragana, alphabetic characters, numbers, and patterns. The CPU 12 and the test key 22 constitute a test mode setting means.

The operation of the embroidery sewing machine configured as described above will be described.

In the editing mode, for example, in order to form a stitch of an embroidery pattern of the English character "ABCD" on the work cloth W, each of the data keys corresponding to the English characters "A", "B", "C", and "D" is selected. When a key and its size data are sequentially selected and input using a numeric keypad, the CPU 12 stores a key code signal or the like corresponding to the key in a predetermined storage area based on the input operation of each data key (steps 1 and 2). Hereinafter, steps are represented by S). When the end key of this edit mode is input (S
2) The CPU 12 reads the sewing data corresponding to each character pattern selected by the key operation from the data bank in the program memory 14 and, based on the data, forms the embroidery frame 10 when forming the embroidery pattern on the work cloth W. Numerical data in the preset setting area is read from the working memory 15 and it is checked whether the moving amount is within the range of the numerical data (S3).

The CPU 12 displays this determination result on the display device 20 so that the operator can confirm it. Therefore, when performing resetting, the operator operates the reset key and then operates the input board.
By operating the jog key 23 or the like on 19 and re-entering the numerical data of the setting area or re-moving the embroidery frame 10 to the movement start position, by instructing the movement with the character string or the setting area Perform by arranging them at appropriate positions.

Next, when the operator presses and inputs the test key 22 (S4),
The CPU 12 calculates the coordinates of the outer periphery of the sewing area A based on the stored sewing data based on the operation, and stores the calculation result in a predetermined storage area of the working memory 15 (S5). Then, the CPU 12 turns on the light emitting device 7 and drives the feeder 8 based on the coordinate data of the outer periphery of the sewing area A stored in the working memory 15 with the needle bar 6 at the needle stop position (S6). ). The instruction light B from the light emitting device 7 indicates the outer periphery of the sewing area A on the work cloth W by turning on the light emitting device 7 and driving the feeding device 8. If any inconvenience occurs as a result of this visual recognition, the setting area may be reset, or the process may return to step S1 to reset the start point (origin) of the embroidery pattern. When the test mode is completed, the process proceeds to the next sewing mode. If the test mode key is not operated, the operation directly shifts to the sewing mode.

Therefore, in this embodiment, the operation of confirming the sewing area is not a movement based on the sewing data equivalent to the actual characters and patterns, but the outer periphery of the sewing area A with respect to the work cloth W is indicated by the indicating light of the light emitting device 7. Therefore, the operator can easily check.

The present invention is not limited to the above embodiment, but may be embodied in a pattern sewing machine. In this pattern sewing machine, the CPU 12 calculates the sewing path based on the sewing data of the pattern, and drives the feeder 8 based on the sewing path.

In addition, it goes without saying that a drive device that directly drives the light emitting device 7 in the X-axis and Y-axis directions may be used as the irradiation instruction position moving unit.

(Effects of the Invention) As described above in detail, according to the present invention, the outer periphery of the sewing area or the sewing path is instructed by the instruction light from the irradiating means based on the sewing data. The sewing area or the sewing path can be confirmed at a glance accurately, and an excellent effect that the sewing can be accurately performed at a desired position is achieved.

[Brief description of the drawings]

1 is an electric block diagram of an embodiment embodying the present invention, FIG. 2 is a perspective view of the same sewing machine, FIG. 3 is a perspective view showing a state in which a light emitting device is mounted, and FIG. FIG. 5 is a plan view of a stitch pattern, and FIG. 6 is a flowchart. In the figure, 7 is a light emitting device as irradiation means, 8 is a feeder as irradiation instruction position moving means, 9 is a mounting arm, 10
Is an embroidery frame as work cloth holding means, 12 is a central processing controller (CPU) constituting drive control means and test mode setting means, 22 is a test key 22 constituting test mode setting means, A is a sewing area, and B is a sewing area. Is an indicator light.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-253092 (JP, A) JP-A-57-69884 (JP, A) JP-A-59-111786 (JP, A) 10646 (JP, U)

Claims (2)

(57) [Claims] A stitch forming means for forming a stitch on a work cloth provided with a needle which moves up and down; a work cloth holding means for holding the work cloth; and a relative position between the needle and the work cloth holding means based on sewing data. An automatic sewing machine comprising: a feed device for changing a position; and a test mode setting means for setting a test mode for confirming a sewing area periphery or a sewing path based on the sewing data before sewing. Irradiating means for irradiating the instruction light with the irradiation light, irradiation instruction position moving means for enabling relative movement between the instruction light from the irradiating means and the work cloth holding means, and when the test mode is set, based on the sewing data. A drive control means for driving the irradiation instruction position moving means, and instructing the outer periphery of the sewing area or the sewing path by the instruction light. 2. The automatic sewing machine according to claim 1, wherein said irradiation instruction position moving means is a feeder.