JP2003326018A - Sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sewing machine in which sewing data made outside the machine can be used effectively. <P>SOLUTION: The sewing is performed according to the sewing data described with coordinate points of needle location made outside the sewing machine. The needle location coordinate point is divided into two by the Y axis, either one of the divided set of the needle location points or another set (Axn, Ayn) [n=1, 2, 3...19, 21, 23, 25...33, 53, 55,...65] is offset for predetermined volume D1 to X-axis direction. In the case where a command for knife is embedded by sewing data, a drive timing of knife is readjusted for a predetermined quantity. By this configuration, the sewing data prepared outside the sewing machine can be modified and adjusted into the sewing data that is suitable for sewing in the sewing machine by a simple operation. Thus, effective sewing is enabled. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine, and more particularly to a sewing machine that performs sewing according to sewing data created outside the sewing machine.

[0002]

2. Description of the Related Art Conventionally, sewing data used for sewing a sewing machine is created by inputting sewing parameters such as a needle drop point and a knife position using an input device provided in the sewing machine itself. On the other hand, the sewing data is created in an external personal computer or the like that is directly connected to the sewing machine or via a network, and is transferred to the sewing machine, and the sewing machine performs sewing according to the sewing data created in this outside. There is.

[0003]

Since the sewing data created in the sewing machine itself is created uniquely to the sewing performed in the sewing machine, once created, there is little need to correct or edit. However, the sewing data created outside the sewing machine is generally described as vector data in which the needle drop points are described by coordinate values, and the desired stitch cannot be realized as it is, or a button hole is cut into the sewing product. It is necessary to correct or edit the sewing data because the sewing parameters such as knife command are not embedded.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a sewing machine that can effectively use sewing data created externally.

[0005]

According to the present invention, in order to solve the above-mentioned problems, in a sewing machine that performs sewing in accordance with sewing data described by needle drop coordinate points created outside the sewing machine, a predetermined sewing data is selected. Setting means for setting a reference axis line for dividing a set of needle drop coordinate points in the coordinate area, and a set of the divided one and / or the other needle drop points in a predetermined amount in a direction orthogonal to the reference axis line. A configuration is adopted that includes means for offsetting and correcting sewing data, and control means for controlling sewing according to the corrected sewing data.

Further, according to the present invention, in the sewing machine which is described by the needle drop coordinate points and has a knife command associated with the needle drop coordinate points, sewing is performed according to the sewing data created outside the sewing machine. A driving means for driving the knife at a predetermined driving timing, means for correcting the driving timing of the knife by a predetermined amount, and control means for driving the knife at the corrected driving timing to control sewing is doing.

Further, according to the present invention, in the sewing machine which is described by the needle drop coordinate points and which is sewn according to the sewing data created outside the sewing machine in which the knife command is not formed in association with the needle drop coordinate points, Setting means for setting the knife drop position, control means for controlling sewing according to the sewing data, feed means for idling the sewn product to the knife drop position after the sewing is finished, and driving the knife at the idling position A configuration including a driving means is also adopted.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on the embodiments shown in the drawings.

FIG. 1 shows a sewing machine, in particular, an overlock sewing machine 1.
Is shown, the holing machine 1 includes a bed portion 2,
The vertical body part 3, the arm part 4, and the needle 5 which drive the needle 5 to move up and down and swing to the left and right, the cloth foot 7 for pressing the cloth (sewn material), and the cloth under the cloth presser 7 A cloth feeding mechanism (cloth feeding means) 8 for moving the cloth in the front-rear direction while holding it, an upper thread cutting device for cutting the upper thread on the upper side of the cloth presser 7, and a lower thread cutting for cutting the lower thread under the needle plate. The apparatus, a cloth cutting knife 11 for cutting a cloth to form a buttonhole, and the like are generally configured. Further, the overlock sewing machine 1 is provided with an operation panel 10 for making various settings necessary for sewing machine operation and for editing sewing data.

Although the operation of the overlock sewing machine 1 is well known, detailed description thereof will be omitted. While the cloth is being held by the cloth feed mechanism 8 from above and below, the cloth is moved in the front-rear direction (Y-axis direction) and The needle bar drive mechanism 6 moves the sewing needle 5 up and down while swinging it to the left and right (X-axis direction), thereby forming a buttonhole stitch around the button hole formed in the cloth.

FIG. 2 is a block diagram showing the construction of the overhollow sewing machine shown in FIG. 1. The CPU 20 as a control means (calculation means) includes a personal computer external to the sewing machine or an external memory card or the like. Various data necessary for sewing such as sewing data is input from the device 24, and setting data set by the operation panel 10 is input. Further, a sewing machine starting signal is input to the CPU 20 from the sewing machine starting pedal 28.

Further, the CPU 20 stores a ROM 21 which stores a control program, a RAM 22 which stores calculation data and is used as a work area, various programs such as a sewing program, sewing data necessary for sewing, sewing patterns, setting data and the like. A non-volatile memory 23 for storing is connected.

The CPU 20 receives a sewing machine starting signal from the sewing machine starting pedal 28, and based on the sewing data and the setting data, the needle bar drive mechanism 6, the cloth feeding mechanism 8 and the needle thread cutting device 2.
5, the bobbin thread cutting device 26, a knife solenoid (female driving means) 27 for driving the knife 11, and the like are operated to control predetermined overhole sewing.

In the present invention, the sewing data is created by the external device 24 of the sewing machine such as a personal computer. The created sewing data is transferred to the sewing machine by connecting a personal computer to the sewing machine or by attaching a recording medium (memory card) storing the sewing data created by an external device to the sewing machine, and is transferred to the non-volatile memory. 23.

An example of the sewing data created by the external device in this way is shown in FIG. 5, in which the sewing data is, for example, sewing data for performing buttonhole sewing and is the needle drop coordinate. Point (Axn, Ayn) [n = 1 to 6
6] is the vector data described in [6]. A knife command is formed in association with the needle drop coordinate point, a knife command is generated at a predetermined needle drop point, and the knife 11 is driven via the knife solenoid 27 at a predetermined drive timing to move the cloth. A button hole is formed in the. In the example of FIG. 5, three knife commands are formed, and the knife falls on the cloth three times to form one hole. The position where this knife falls is virtually illustrated by a thick solid line. For the sake of clarity, the three solid lines are shown separated by the Y axis, but in reality, the three solid lines overlap the Y axis (cutting position of the knife).

The sewing data externally created in this manner is raw data and is not created uniquely to the sewing of the sewing machine, and therefore needs to be processed. A typical processing example is to set the needle drop point in the coordinate area on the left or right side of the button hole to X depending on the size of the button hole.
It is to offset a predetermined amount in the axial direction and shift in parallel, or to correct the drive timing of the knife to shift the cutting position.

Therefore, in the present invention, the offset amount or the correction amount is set through the operation panel 10 so that the sewing data can be easily corrected and edited. At the time of correction, the CPU 20 reads the sewing data to be corrected from the non-volatile memory 23 and stores it in the RAM 22. In the sewing data edit mode, needle drop data is displayed on the display portion 10a of the operation panel 10 as shown in FIG. 3, and the sewing data can be corrected by operating the buttons below. You can

For example, when it is desired to offset the needle drop point in the sewing area to the left or right of the button hole, the "dividing line setting" button 10f is operated to divide the needle drop coordinate point into left and right. Set the reference axis. Normally, this is set on the Y-axis of the needle drop coordinate, so the needle drop coordinate point is
It is divided into two sets of needle drop coordinate points across the Y axis.

Next, an "offset (left)" button 10b
When the key is operated, the ten key 10i as shown in FIG. 4 appears. When the offset amount is designated by this, the value is displayed on the display unit 10h. When the preparation completion key 10g is pressed after confirming the value, the value is input to the CPU 20. The CPU 20 sets a set of needle drop points (Axn, Ayn) [n = 1, 2,
3 ,. ． ． ． ． 19, 21, 23, 25 ,. ． ． ． ． Three
3, 53, 55 ,. ． ． ． ． 65] and identify the X
The coordinate data is added / subtracted by the offset amount D1 to correct the sewing data. This corrected sewing data is shown in FIG. 6, whereby the left knife groove width is corrected.

The "offset (right)" button 10c
Similarly, when the offset amount is input using the numeric keypad 10i, the CPU 20 takes in the input value,
A set of needle drop points (Axn, Ayn) [n = 20, 22. ． ． ． ． 34,
35, 36. ． ． ． ． 52, 54, 56 ,. ． ． ． ． 6
6] is identified and the X coordinate value is added or subtracted by the offset amount D2 to correct the sewing data. The corrected sewing data is shown in FIG. 7, which corrects the right knife groove width.

When the post-correction ready key 10g is operated in this manner, the corrected sewing data is transferred from the RAM 22 to the non-volatile memory 23 and recorded separately from the uncorrected sewing data. At the time of sewing, the CPU 20 reads the corrected sewing data from the non-volatile memory 23 and controls the sewing based on the read data to form a predetermined stitch.

The raw sewing data shown in FIG. 5 is, for example, the needle drop coordinate point (Axn, Ayn) [n = 35, 4
0, 44], the knife command is embedded, and the knife command is input to the CPU 20 at the needle drop point, whereby the CPU drives the knife 11 via the knife solenoid 27 at a predetermined driving timing. , Drop a knife on the cloth to form a buttonhole. This knife drop position is
Since it is necessary to make a fine adjustment, if the "female position (correction)" button 10d of the operation panel 10 is operated, it becomes possible to input the amount to correct the drive timing of the knife with the ten keys as well. Therefore, the correction amount is determined by inputting the number of needles or the knife drop distance (mm) on the cloth. Since this correction amount is stored in the non-volatile memory 23 in association with the sewing data, the CPU 20 reads the correction value stored in association with the sewing data at the time of sewing, and the knife is used at the corrected drive timing. To control sewing.
In this case, when the knife is driven by a plurality of knife commands, the driving timing by the knife command that determines the knife positions at both ends of the cutting portion is corrected. The fact that the knife dropping positions at both ends are adjusted by this is shown by double arrow lines in FIG. When the knife command is embedded after the blank feed, the blank feed amount is corrected and the knife 11
To drive.

Further, since a knife command may not always be input to the sewing data created outside the sewing machine, in that case, the "knife position (addition)" button 10e on the operation panel is operated. This makes it possible to set the knife drop position using the ten keys 10i. In that case, the CPU 20 drives the cloth feeding mechanism 8 to feed the cloth to the knife dropping position after the sewing is completed according to the sewing data. Then, the knife 11 is driven via the knife solenoid 27 at the knife dropping position that has been idly fed to form a button hole in the cloth.

The sewing data corrected or edited in this manner is stored separately from the data before correction. However, only the correction amount is stored in a separate file, and the sewing data before correction (a raw data created outside the sewing machine is stored). It may be stored in association with sewing data).

[0025]

As described above, according to the present invention (Claim 1), the sewing data described by the needle drop coordinate points created outside the sewing machine is divided by a predetermined reference axis line, and the divided one or By collectively moving the other set of needle drop points, the needle drop coordinate points can be corrected by a simple operation.

In the present invention (claim 4), when the knife command is formed in association with the needle drop coordinate point of the sewing data created outside the sewing machine, the knife driving timing by the knife command is corrected. Therefore, the cutting position of the sewn product can be adjusted accurately.

Further, in the present invention (claim 7), even when the knife command is not formed in association with the needle drop coordinate point of the sewing data created outside the sewing machine, after the sewing is completed,
Since the sewn product can be cut by feeding it to the knife dropping position, the sewing data created outside the sewing machine can be efficiently used.

[Brief description of drawings]

FIG. 1 is a front view schematically showing the outer appearance of a sewing machine of the present invention.

FIG. 2 is a block diagram showing a configuration of a control system of the sewing machine.

FIG. 3 is an explanatory diagram showing a key arrangement on an operation panel.

FIG. 4 is an explanatory diagram showing a screen for inputting a correction value on the operation panel.

FIG. 5 is a needle drop diagram showing uncorrected needle drop coordinate values created outside the sewing machine.

FIG. 6 is a needle drop diagram showing the needle drop coordinate values when the left female groove width is corrected.

FIG. 7 is a needle drop diagram showing the needle drop coordinate values when the right knife groove width is corrected.

[Explanation of symbols]

8 Cloth feeding mechanism 10 Operation panel 11 female 20 CPU 23 Non-volatile memory 27 female solenoid

Continued front page    F term (reference) 3B150 AA24 BA06 CE23 CE27 EE03                       EE07 JA11 LA05 LA68 LB02                       MA07 MA12 NA05 NA63 NA64                       NB02 NB12 NC11 QA01 QA06                       QA08

Claims (7)

[Claims] 1. A standard for dividing a set of needle drop coordinate points in a predetermined coordinate area of sewing data in a sewing machine that performs sewing according to sewing data described by needle drop coordinate points created outside the sewing machine. Setting means for setting the axis line, means for correcting the sewing data by offsetting a set of the divided one and / or the other needle drop points by a predetermined amount in the direction orthogonal to the reference axis line, and the corrected sewing data And a control means for controlling sewing according to the sewing machine. 2. The sewing machine according to claim 1, wherein the reference axis can be set via an operation panel. 3. A sewing machine is a holing machine equipped with a knife that feeds cloth in the Y-axis direction of needle drop coordinates and swings the needle in the X-axis direction, wherein the reference axis is cut by the knife. 3. The sewing machine according to claim 1, wherein the sewing machine is on the Y-axis. 4. A sewing machine, which is described by needle drop coordinate points and has a knife command associated with the needle drop coordinate points, performs sewing according to sewing data created outside the sewing machine, and a predetermined drive is performed by the knife command. A sewing machine comprising: a driving unit that drives the knife at a timing; a unit that corrects the driving timing of the knife by a predetermined amount; and a control unit that drives the knife at the corrected driving timing to control sewing. . 5. When the knife is driven by a plurality of knife commands to continuously cut the cloth, the driving timing by the knife command that determines the knife positions at both ends of the cutting portion is corrected. The listed sewing machine. 6. The sewing machine according to claim 4, wherein when the knife command is embedded after the idle feed, the amount of the idle feed is corrected to drive the knife. 7. A sewing machine, which is described by needle drop coordinate points and has no knife command associated with the needle drop coordinate points, performs sewing according to sewing data created outside the sewing machine Setting means for setting the sewing machine, control means for controlling sewing according to the sewing data, feeding means for idling the sewn product to the knife dropping position after sewing is completed, and driving means for driving the knife at the idling position. A sewing machine characterized by having it.