JP7587938B2 - Sewing equipment - Google Patents

Description

The present invention relates to a sewing device that performs sewing according to sewing pattern data.

In conventional sewing devices, a control device stores sewing pattern data for performing specific stitches or decorative stitches, and editing operations such as selecting sewing pattern data and changing parameters are performed using an input device such as a touch panel connected to the storage device (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 9-290083

In the conventional sewing device described above, when various sewing conditions were set for the sewing pattern data, the various sewing conditions set for the sewing pattern data were not recorded, and in order to reproduce them the next time sewing was performed, the sewing conditions had to be set again.

The objective of the present invention is to provide a sewing device that can reproduce sewing patterns including the sewing conditions set for the patterns.

In order to solve the above problem, a sewing device includes a sewing unit that sews according to a sewing pattern, an input unit that sets sewing conditions , which are settings related to sewing for the sewing pattern, and a control device that controls the operation of the sewing unit so that sewing is performed based on sewing pattern data in which the sewing pattern and sewing conditions are defined, and the control device stores the sewing pattern data after sewing has been performed as history in a non-volatile storage means, and is capable of reading out the sewing pattern data stored as the history to perform sewing.

Furthermore, the control device stores the sewing pattern data that has been sewn as a history in the storage means when sewing conditions are changed for the sewing pattern data that has been sewn ,
The input unit displays a list of the plurality of sewing pattern data stored as a history, and
The control device may be configured to read out the sewing pattern data stored as the history for a sewing pattern selected from the plurality of sewing pattern data displayed in a list, and to perform sewing .

The present invention makes it possible to easily reproduce the sewing patterns, including the sewing conditions set for them.

1 is a front view of a sewing machine according to an embodiment of the present invention; FIG. FIG. 2 is a functional block diagram showing a control system of the sewing machine. 1 is an explanatory diagram showing a display example of an input screen displayed on a display unit of a display input device; 11 is an explanatory diagram showing a plurality of display area divisions of an input screen by virtual lines; FIG. 11 is a front view of a sewing pattern list provided on the top cover of the sewing machine arm portion. FIG. 11 is an explanatory diagram showing an example of a history screen displayed on a display unit of a display input device; FIG. 13 is a flowchart showing a history storage process.

[Outline of the embodiment of the invention]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sewing apparatus according to the present invention will now be described with reference to the accompanying drawings, in which: Fig. 1 is a front view of a sewing machine 10 as a sewing apparatus, Fig. 2 is a left side view thereof, and Fig. 3 is a functional block diagram showing a control system.

The sewing machine 10 is equipped with a needle up and down movement mechanism which uses the sewing machine motor 11 as a drive source to impart up and down movement to the needle bar which holds the sewing needle 2, a bottom feed mechanism which uses the power of the sewing machine motor 11 to feed the workpiece from below the needle plate using a feed dog, an upper feed mechanism which uses the power of the sewing machine motor 11 to feed the workpiece using an upper feed 4 which contacts the workpiece from above, a shuttle mechanism, a fabric presser 3 which presses down the workpiece on the needle plate from above, a needle swing mechanism which arbitrarily moves the needle bar in a direction perpendicular to the fabric feed direction, a thread tensioning device which imparts thread tension to the upper thread which is passed through the sewing needle 2, a thread take-up lever which pulls up the upper thread, a thread cutting device which cuts the sewing end ends of the upper thread and the lower thread, a display input device 80 which serves as an input section which displays various information related to sewing and accepts input of various settings, a control device 90 which controls the operation of each component of the sewing machine 10, and a sewing machine frame 20 which stores or supports each component of the sewing machine 10.
In the following description, the above-mentioned needle up-down movement mechanism, lower feed mechanism, upper feed mechanism, presser foot 3, shuttle mechanism, needle swing mechanism, thread tension control device, thread take-up lever and thread cutting device are collectively referred to as the "sewing section."

In the following explanation, the horizontal direction parallel to the direction in which the bottom feed mechanism feeds the sewn material is referred to as the X-axis direction, the downstream side of the sewn material in the feed direction is referred to as the "front", and the upstream side of the feed direction is referred to as the "rear". The horizontal direction perpendicular to the X-axis direction is referred to as the Y-axis direction, the left hand side facing forward is referred to as the "left", and the right hand side is referred to as the "right". The direction perpendicular to the X-axis and Y-axis directions is referred to as the Z-axis direction, one of which is referred to as the "up" and the other as the "down".

The sewing machine frame 20 comprises a sewing machine bed portion 21 extending along the Y-axis direction, a vertical body portion 22 raised from the right end portion of the sewing machine bed portion 21, and a sewing machine arm portion 23 extending to the left along the Y-axis direction from the upper end portion of the vertical body portion 22.
The needle bar which holds the sewing needle 2, the presser foot 3 and the upper feed mechanism 4 are supported at the lower left end of the sewing machine arm portion 23.

A rectangular display screen of a display input device 80 is disposed on the front side of the standing body 22. The front surface of the standing body 22 and the display screen of the display input device 80, which is flush with the front surface, are inclined surfaces with the upper and left sides of the XZ plane slightly inclined backward.
The display screen of the display input device 80 is inclined as described above so that it is easily visible to a sewing machine operator working from behind facing the needle drop position of the sewing machine 10.

The upper surface of the sewing machine bed portion 21 is a smooth surface along the X-Y plane, and a needle plate (not shown) is positioned flush with the upper surface of the sewing machine bed portion 21 at the needle drop position of the sewing needle 2.

The needle up/down movement mechanism is the same as a well-known mechanism, so a detailed description will be omitted. The needle up/down movement mechanism uses a sewing machine motor 11 built into the sewing machine as a drive source and can move the needle bar up and down using a crank mechanism.

The needle swing mechanism is the same as a well-known mechanism, so a detailed description will be omitted. The needle swing mechanism includes a support frame that supports the needle bar so that it can move up and down, and a needle swing motor 15 that moves the tip of the needle bar along the Y-axis direction via the support frame.

The shuttle mechanism is the same as a well-known mechanism and will not be described in detail here. The shuttle mechanism has a shuttle that is rotated by power from a sewing machine motor 11 and is located below the needle plate. The shuttle mechanism captures the upper thread loop from the lowering sewing needle 2 and entangles the lower thread with it to form a stitch on the sewn item.
The thread take-up receives power from the sewing machine motor 11 and moves up and down in the same cycle as the needle drop. The needle thread heading toward the sewing needle is hung on the thread take-up, and when the shuttlecock forms a stitch with the needle and bobbin threads, the thread is pulled up to complete the stitch.

The bottom feed mechanism is the same as a well-known mechanism, and therefore a detailed description thereof will be omitted. The bottom feed mechanism has a feed dog whose teeth appear and disappear from the opening of the needle plate, and receives reciprocating motion in the X-axis direction and reciprocating motion in the Z-axis direction from the sewing machine motor 11 and applies them to the feed dog. As a result, the feed dog performs an elliptical motion around the Y-axis whose longitudinal direction is along the X-axis direction. When the feed dog passes the upper part of the locus of the elliptical motion, the tooth tip of the feed dog moves forward while protruding upward from the opening of the needle plate, and feeds the sewing material on the needle plate forward.
The bottom feed mechanism also includes a bottom feed adjustment motor 12 that adjusts the stroke width of the reciprocating motion in the X-axis direction transmitted from the sewing machine motor 11, and the amount of feed of the workpiece by the feed dog can be adjusted as desired.

The upper feed mechanism is the same as a well-known mechanism, so a detailed description will be omitted. The upper feed mechanism has an upper feed that abuts from above the needle plate against the workpiece at the needle drop position to perform a feed operation, and receives reciprocating motion in the X-axis direction and reciprocating motion in the Z-axis direction from the sewing machine motor 11 and applies them to the upper feed. As a result, the upper feed performs an elliptical motion around the Y-axis whose longitudinal direction is aligned with the X-axis direction. When the upper feed passes under the locus of the elliptical motion, the tip portion moves forward along the upper surface of the needle plate, feeding the workpiece on the needle plate forward.
The upper feed mechanism also includes an upper feed adjustment motor 13 that adjusts the stroke width of the reciprocating motion in the X-axis direction transmitted from the sewing machine motor 11, and the amount of feed of the workpiece by the feed dog can be adjusted as desired.
In addition, the upper feed can be manually switched between a retracted position where no feed is performed and a feed position where feed is performed, and it is possible to select whether or not to perform the upper feed. A sensor may be provided to detect whether the upper feed is located at the retracted position or the feed position, and the detection signal may be input to the control device 90.

The presser foot 3 is provided above the needle drop position of the needle plate and can press down the material to be sewn from above. The presser foot 3 is attached to the lower end of a presser bar that is supported hanging down from the lower left end of the sewing machine arm section 23. A spring pressure is applied to the presser bar within the sewing machine arm section 23, and the presser foot 3 is pressed towards the needle plate side to apply pressure to the material to be sewn.
There are a number of different types of presser foot 3, and the presser foot 3 can be replaced with an appropriate one depending on the type of sewing.
The presser bar can retract the presser foot 3 upward by a manual lever (not shown) or the presser foot motor 14. Furthermore, the presser foot motor 14 can adjust the pressing pressure of the presser foot as desired.

The thread tension device is the same as a well-known mechanism, so a detailed description will be omitted. Although not shown in the figure, the thread tension device clamps the upper thread midway through its path and applies tension to the upper thread by clamping pressure. The thread tension device can adjust the clamping pressure using the thread tension solenoid 16, which allows any desired thread tension to be applied to the upper thread.

The thread cutting device is a well-known mechanism and will not be described in detail. The thread cutting device has a knife that operates between the needle plate and the shuttle mechanism, and cuts the upper and lower threads. The thread cutting device has a thread cutting solenoid 17 for operating the knife.

The display input device 80 comprises a display unit 81 provided on the front side of the upright body portion 22 of the sewing machine frame 20, a touch panel 82 provided on top of the front side of the display unit 81, and three dials 83, 84, 85 provided in a line immediately below the display unit 81, approximately in the Y-axis direction.
The display unit 81 is composed of a liquid crystal display or an organic EL (Electro Luminescence) display, and displays an input screen G1, which will be described later, under display control by the control device 90. The touch panel 82 detects the position of a contact input by an operator of the sewing machine, and functions as an input detection unit that detects an input operation on the input screen G1.
The three dials 83 , 84 , 85 each have an internal encoder 831 , 841 , 851 , and the amount of rotation performed by the operator is input to the control device 90 through the encoders 831 , 841 , 851 .

[Sewing machine control system]
Next, the configuration of a control system of the sewing machine 10 will be described with reference to FIG.
The control device 90 of the sewing machine 10 includes a ROM 92 that stores various programs for performing various controls and processes described below, sewing pattern data for performing various stitches, and other various setting data, a CPU 91 that executes the various programs in the ROM 92, a RAM 93 that serves as a working area when executing the various programs, a data memory 97 which is a non-volatile storage means, and an input/output interface 94 and an output interface 95 connected to the CPU 91, ROM 92, RAM 93, and data memory 97 via buses.

The output interface 95 is connected to the sewing machine motor 11, the bottom feed adjustment motor 12, the top feed adjustment motor 13, the presser motor 14, the needle swing motor 15, the thread tension solenoid 16, and the thread cutting solenoid 17 via drive circuits 11a, 12a, 13a, 14a, 15a, 16a, and 17a. The CPU 91 can control the operations of these components.
The input/output interface 94 is connected to each component of the display/input device 80 , a power switch 96 , and a start button 98 .

The sewing machine 10 uses the control device 90 to control the forward and backward feed amount by the bottom feed adjustment motor 12 and the left and right needle swing amount by the needle swing motor 15, making it possible to drop the needle at any position on the X-Y plane relative to the material being sewn.

Data for a plurality of sewing patterns is stored in the data memory 97. As shown in Fig. 6, a list display 232 showing prepared sewing patterns and their pattern numbers is provided on the inside of an openable top cover 231 of the sewing machine arm portion 23.
The sewing pattern data includes a plurality of needle drop positions in the XY plane that are determined according to a sewing pattern, and settings of sewing conditions for sewing the sewing pattern.
The sewing conditions are settings related to "density stitching at the start end of sewing", "density stitching at the end end of sewing", "thread tension", "baseline position of sewing pattern", "top feed", "presser lifting of presser foot", "thread trimming", "presser pressure", "stitch width" and "stitch length". The settings of these sewing conditions can be changed on an input screen G1, which will be described later.

The data memory 97 includes an initial data storage section 971 and a history storage section 972. The initial data storage section 971 stores sewing pattern data related to each sewing pattern in the list display 232. For each of the sewing pattern data stored in the initial data storage section 971, initial setting data (default data) is defined for the sewing conditions.
On the other hand, the history storage unit 972 stores sewing pattern data of sewing patterns in which sewing conditions have been changed and sewing has actually been performed.

The control device 90 reads the sewing pattern data in the initial data storage unit 971 or the history storage unit 972, and controls the bottom feed adjustment motor 12 and the needle swing motor 15 to perform sewing that forms stitches according to the sewing pattern.

[Display control of display input device]
The following describes the display control of the display input device 80 performed by the control device 90. The display control of the display input device 80 and the processing performed by input described below are all performed by the CPU 91 of the control device 90 executing a program in the ROM 92.

Figure 4 is an explanatory diagram showing a display example of the input screen G1 displayed on the display unit 81 of the display input device 80, and Figure 5 is an explanatory diagram showing the division of multiple display areas of the input screen G1 with virtual lines. In the explanatory diagrams showing these display examples and the explanatory diagrams showing other display examples described below, the top, bottom, left, and right on the paper surface approximately correspond to the top, bottom, left, and right on the sewing machine 10.

As shown in the figure, the input screen G1 is generally a vertically elongated rectangle and is divided into a first region R1 extending across the entire width of the top of the screen from left to right, a second region R2 extending across the entire width of the top of the screen from left to right below that, third to fifth regions R3 to R5 located below that, and a sixth region R6 extending across the entire width of the bottom of the screen from left to right.
The third to fifth regions R3 to R5 are vertically elongated rectangular regions that divide the area between the second region R2 and the sixth region R6 into thirds, with the third region R3 on the left, the fourth region R4 in the middle, and the fifth region R5 on the right.
5, the third to fifth regions R3 to R5 are divided into three equal parts in the left-right direction, but this is not limited thereto, and the ratio of each part may be increased or decreased. For example, the left-right width of the central fourth region R4 may be changed within a range of 1/4 to 1/2 of the overall width, and the left-right widths of the third region R3 and the fifth region R5 on both sides of the central fourth region R4 may be made equal.

In the first area R1, a support button B11, a settings button B12, a sewing button B13, a history button B14, and a portal button B15, each of which is displayed as a character string, are arranged in order from left to right for switching to various input screens.
Each of the buttons B11 to B15 can be touched to input a button, and the positions of the buttons B11 to B15 can be scrolled by swiping left or right in the first region R1.

The support button B11 is a button for switching the display to a support screen that displays the operation manual for the sewing machine 10 and the like.
The setting button B12 is a button for switching the display to a setting screen for configuring settings related to the surrounding environment of the sewing machine 10, such as the brightness of a work light (not shown), the volume of a speaker (not shown), etc.
The sewing button B13 is a button for switching the display to the input screen G1 in Fig. 4. This input screen G1 allows various settings relating to sewing to be made.
The history button B14 is a button for switching the display to a history screen G2, which will be described later. The history screen G2 is an input screen for calling up sewing pattern data and record data related to settings at the time of sewing for a plurality of sewing patterns that have been sewn in the past. The history screen G2 will be described later.
The portal button B15 is a button for switching the display to a browser screen for connecting to a portal site of the sewing machine 10 via a network line.

In the second area R2, a presser foot candidate display frame W21 consisting of a pattern and text display, a sewing pattern selection button B21 as an operation unit for switching between various display screens, a sewing pattern setting button B22, and a cycle selection button B23 are arranged in order from the left.

The presser foot candidate display frame W21 displays the type of presser foot 3 that is suitable for the currently selected sewing pattern. For example, in the example of Figure 4, pattern information and text information are displayed indicating that presser foot A and presser foot B are suitable for the currently selected sewing pattern.

The sewing pattern selection button B21 has a substantially rectangular contact area, and when the user touches within the contact area, the display is switched to a sewing pattern selection screen. From this selection screen, the user can select default sewing pattern data in the initial data storage unit 971 of the data memory 97 described above.
As described above, each sewing pattern is assigned a pattern number. When a pattern number is selected and confirmed on the selection screen, the selected pattern number is displayed within the approximately rectangular contact area of the selection button B21.

The sewing pattern setting button B22 has a circular contact range set, and an icon indicating that it is a setting button is displayed inside the circular contact range. When the contact range of this setting button B22 is touched, the display switches to a specified setting screen. From this setting screen, settings related to the sewing pattern other than the parameters set by buttons B31 to B53, which will be described later, can be made. For example, from this setting screen, pattern editing such as upside-down or left-right inversion of the sewing pattern can be performed.

The cycle selection button B23 has a circular contact range set, and an icon indicating that it is a cycle selection button is displayed inside the range. When the user touches within the contact range of the cycle selection button B23, the user can set whether to perform single-shot sewing, which sews one sewing pattern, or continuous sewing, which sews repeatedly. When single-shot sewing is set for this cycle selection button B23, the number "1" is displayed inside the icon, and when repeated sewing is selected, the number inside the icon is erased.

In each of the third area R3 and the fifth area R5, three buttons are arranged vertically as operation units for making predetermined settings for the sewing pattern.
In the third area R3, a sewing start process setting button B31, a thread tension setting button B32, and a sewing end process setting button B33 are arranged in this order from the top.
In the fifth area R5, a top feed setting button B51, a presser lifting setting button B52, and a thread cutting setting button B53 are arranged in order from the top.
A circular contact range is set for each of these various setting buttons B31, B32, B33, B51, B52, and B53, and an icon is displayed inside the range as a content display section showing the content to be input from each setting button.
In addition, on the lower outside of the various setting buttons B31, B32, B33, B51, B52, B53, there are respectively arranged setting information display sections W31, W32, W33, W51, W52, W53 which serve as content display sections showing the content to be entered from each setting button and its setting value or setting status in text information.

The sewing start process setting button B31 is a button for selecting whether or not to perform densification stitching at the start end of sewing and the type of densification stitching. For example, by repeatedly touching within the contact range of the sewing start process setting button B31, the settings can be switched between backstitching, welt stitching, and no densification stitching.

The thread tension setting button B32 is a button for arbitrarily setting the thread tension of the thread tension device using the thread tension solenoid 16. When the user touches within the contact range of the thread tension setting button B32, a thread tension input screen is displayed, and the user can set the thread tension by inputting data on the screen or by rotating the dial 84.

The end-of-sewing process setting button B33 is a button for selecting whether or not to perform densification stitching at the end of the sewing and the type of densification stitching. For example, by repeatedly touching within the contact range of the end-of-sewing process setting button B33, the settings can be switched between backstitching, welt stitching, and no densification stitching.

The top feed setting button B51 is a button for setting whether or not top feed is performed by the top feed 4 and the top feed amount (the difference value relative to the bottom feed amount by the feed dog). When the contact range of the top feed setting button B51 is touched, the setting is switched between whether or not top feed is performed. Furthermore, when top feed is set to be performed, an input screen for the top feed amount is displayed, and the top feed amount can be set by inputting information on the screen or by rotating the dial 84.

The presser foot lifting setting button B52 is a button that sets whether or not to automatically lift the presser foot 3 and release the sewn material when sewing of the sewing pattern is completed. By touching within the contact range of the presser foot lifting setting button B52, the setting for whether or not to automatically lift the presser foot 3 can be switched.

The thread cutting setting button B53 is a button for setting whether or not to automatically perform thread cutting using the thread cutting device when sewing of the sewing pattern is completed. By touching within the contact range of the thread cutting setting button B53, the setting for whether or not to perform automatic thread cutting can be switched.

In the fourth area R4, a pattern image display frame W41 that displays an image of the currently selected sewing pattern, and a baseline position setting button B42 as an operation unit are arranged in order from the top.

A sewing pattern image consisting of the design of the currently selected sewing pattern is displayed in the pattern image display frame W41. This sewing pattern image is a moving image that is linked to the sewing operation, and the needle drop position in the left-right direction where the current needle drop is being made is displayed at the top end of the image. In addition, below the needle drop position, the stitch that will be formed at the needle drop position where the needle drop will be made next is displayed. This sewing pattern image is a moving image in which the stitch moves upward by one stitch each time a needle drop is made.
The shape of the sewing pattern image changes according to the set values of stitch length and stitch width, which will be described later.

The baseline position setting button B42 has a circular contact range set thereon, and an icon is displayed inside the range as a content display section showing the content to be input via the baseline position setting button B42.
The base line is a reference line of the sewing pattern that is aligned in the cloth feed direction, and the needle swing amount of each needle drop position of the sewing pattern is determined based on the base line.
When a touch is made within the contact range of this baseline position setting button B42, a baseline position input screen is displayed, and the baseline position can be set by inputting data on the screen or by rotating the dial 84.
A setting information display section W42 is disposed on the outer lower part of the base line position setting button B42 as a content display section which shows the content to be input from the button and its setting value in text information.

In the sixth area R6, the presser pressure display section W61, which numerically displays the set value of the pressure applied by the presser foot 3, the stitch width display section W62, which numerically displays the set value of the left-right width of the needle swing in the sewing pattern, and the stitch length display section W63, which numerically displays the set value of the spacing (stitch pitch) between each stitch in the fabric feed direction, are arranged in order from the left.

The presser pressure display W61, stitch width display W62 and stitch length display W63 are disposed immediately above the dials 83, 84 and 85, respectively.
The pressure is set based on the input rotation amount of the dial 83 detected by the encoder 831, and the input pressure setting value is displayed numerically on the pressure display section W61.
The stitch width is set based on the input rotation amount of the dial 84 detected by the encoder 841, and the input stitch width setting value is displayed numerically in the stitch width display section W62.
The stitch length is set based on the input amount of rotation of the dial 85 detected by the encoder 851, and the input stitch length setting value is displayed numerically on the stitch length display section W63.

[History storage process]
As described above, the control device 90 performs a process of storing the history of the sewing pattern data.
FIG. 7 is a display example of the history screen G2 for reading out sewing pattern data based on the history in the history storage unit 972.
At the top of the history screen G2, a support button B11, a settings button B12, a sewing button B13, a history button B14, and a portal button B15 are arranged in order from left to right, similar to the input screen G1.
In the area below the sewing pattern data, the sewing pattern data recorded as history is displayed vertically in a row, with the most recent sewing pattern data being at the top.
In addition, the number of sewing pattern data recorded as history that can be stored is limited, and when the number of sewing pattern data exceeds the upper limit, the oldest sewing pattern data is deleted.

A display frame W71 for the pattern number of the sewing pattern of the sewing pattern data recorded as history is displayed on the left side of the history screen G2, and a display frame W72 for the sewing pattern image of the sewing pattern data recorded as history is displayed on the right side of the screen.
Furthermore, when a touch operation is performed on the display frame W72 of any sewing pattern image, the screen transitions to an input screen G1 for inputting sewing pattern data recorded as history. In the display state of the input screen G1, sewing based on the sewing pattern data recorded as history can be performed by pressing the start button 98.
It is also possible to change the settings of the sewing conditions of the sewing pattern data recorded as history from the input screen G1.

Next, the process of storing sewing pattern data as history data, which is executed by the control device 90, will be described with reference to the flowchart of FIG.
The control device 90 determines whether or not the start button 98 has been pressed (step S1), and when the start button 98 has been pressed, sewing is carried out based on the currently selected sewing pattern data (step S3).
Thereafter, it is determined whether or not any changes have been made to the currently selected sewing pattern data (step S5).
In this determination, it is determined whether both the sewing pattern and the sewing conditions are the same (step S5). That is, if either the sewing pattern has been changed by changing the pattern number or the sewing conditions have been changed, it is determined that there has been a change.

Then, if it is determined that the sewing pattern data has been changed (step S5: YES), the sewing pattern data sewn in step S3 is stored as new history in the history memory unit 972 (step S7), and the process returns to the determination of whether the start button 98 has been pressed in step S1.
If the sewing pattern data has not been changed (step S5: NO), the sewing pattern data is not stored in the history storage unit 972, and the process returns to step S1 to determine whether the start button 98 has been pressed.

[Technical Effects of the Invention Embodiments]
As described above, the control device 90 of the sewing machine 10 stores the sewing pattern data for which sewing has been performed as history in the history storage unit 972 of the data memory 97. When storing the sewing pattern data as history, the control device 90 automatically stores the data without requiring the operator of the sewing machine to input a record command.
Therefore, the sewing pattern data stored as history can be read out and new sewing can be performed, so that when sewing a previously performed item is to be performed again, the sewing can be easily performed.
In addition, since the requirement for storing sewing pattern data as history in the history storage unit 972 of the data memory 97 is that the sewing pattern data has been sewn, it is possible to eliminate sewing pattern data that has not been sewn, thereby reducing the amount of data stored in the history storage unit 972. In addition, it is possible to use a memory with a small storage capacity as the history storage unit 972.

In addition, when a change is made to the sewing pattern data used for sewing, the control device 90 stores the sewing pattern data used for sewing as history in the history storage unit 972. This makes it possible to prevent the same sewing pattern data from being stored continuously in the history storage unit 972, and further reduces the amount of data stored in the history storage unit 972. In addition, it becomes possible to use a memory with a small storage capacity as the history storage unit 972.

In particular, when either the sewing pattern or the sewing conditions are changed from the sewing pattern data used for sewing, the control device 90 stores the sewing pattern data used for sewing as history in the history storage unit 972. This eliminates the need to reset the sewing conditions when sewing again after previous sewing, making it possible to sew easily and conveniently.

[others]
Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments. Details of the above-described embodiments can be modified as appropriate without departing from the spirit of the invention.
For example, the control device 90 has exemplified a case in which the sewing pattern data on which sewing has been performed is saved as history when changes are made thereto, but in addition to this, the control device 90 may also perform a process of storing the sewing pattern data on which sewing has been performed as history in the history storage unit 972 when the sewing pattern data on which sewing has been performed differs from all of the sewing pattern data stored in the history storage unit 972.
In this case, it is possible to further reduce the amount of data stored in the history storage unit 972. Also, it is possible to use a memory with a small storage capacity as the history storage unit 972.

The data memory 97 is not limited to semiconductor memory such as EEPROM or flash memory, but can use any non-volatile data storage means such as magnetic or optical recording media.

10 Sewing machine (sewing device)
80 Display input device (input unit)
90 Control device 91 CPU
97 Data memory (non-volatile storage means)
G1 Input screen G2 History screen

Claims (1)

A sewing unit that performs sewing according to a sewing pattern;
an input unit for setting sewing conditions, which are settings related to sewing of the sewing pattern;
a control device that controls the operation of the sewing unit so that sewing is performed based on sewing pattern data in which the sewing pattern and sewing conditions are defined,
the control device stores the sewing pattern data, which has been sewn, as a history in a non-volatile storage means when sewing conditions are changed for the sewing pattern data, which has been sewn ;
The input unit displays a list of the plurality of sewing pattern data stored as a history, and
The control device is characterized in that, for a sewing pattern data item selected from the plurality of sewing pattern data items displayed in a list, the control device reads out the sewing pattern data stored as the history and enables sewing to be performed.

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