JPS60232196A - Sewing machine with detachable external memory - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention includes an internal memory provided within a sewing machine frame, and an external memory that is removable from the sewing machine frame.
The present invention relates to a sewing machine that selects and forms a desired pattern from among a large number of patterns stored in both memories.

[Prior Art] Currently, sewing machines have been commercialized in which a small, large-capacity electronic memory is installed in the sewing machine frame, and more than 100 patterns stored in the electronic memory are selectively formed. In order to dramatically increase the number of patterns formed compared to sewing machines,
Frequently used patterns are stored in the internal memory inside the sewing machine frame, and less frequently used patterns are stored in an external memory that is removable from the sewing machine frame, and both memories can be selected using a selector switch. A sewing machine was proposed.

However, when forming a combination of the pattern in the internal memory and the pattern in the external memory, if the external memory is accidentally moved from the sewing machine frame, the swing position and feed of the sewing needle with respect to the pattern in the external memory may be changed. The setting position of the feed adjuster that controls the movement becomes uncertain, which may cause the shape of the entire combination pattern to collapse, damaging the sewn product or causing a collision between the sewing needle and sewing tools such as the presser foot. was there.

Purpose E] The present invention was made in order to solve the above-mentioned problems, and its purpose is to save data from the external memory or the sewing machine frame when the pattern in the internal memory and the pattern in the external memory are combined. When it is accidentally detached, by deleting the pattern in the external memory in the combination pattern and changing the pattern combination, collision with the first sewing tool can be prevented and damage to the sewn product can be minimized. Our goal is to provide sewing machines.

[Solution 1] In order to achieve the above-mentioned object, the present invention provides information on whether all of the plurality of combined patterns belong to the first pattern group in the internal memory or if there is a second pattern in the external memory in the plurality of patterns. a discriminating means for discriminating whether a pattern of a pattern group is included; and a discriminating means for retaining a current pattern combination when all of the plurality of combined patterns belong to a first pattern group; A single control stage is provided for changing the pattern combination by deleting the included patterns when the patterns of the second pattern group are included.

[Operation 1] The control means controls the pattern combination means according to the determination result of the determination means. That is, the control means retains the pattern combination by the pattern combination means when the external memory is removed in a state in which all of the plurality of combined patterns belong to the first pattern group. Therefore, the pattern combination is not destroyed and there is no need to perform the pattern combination operation again, thereby improving the ease of use of the sewing machine. On the other hand, if the external memory is accidentally removed while a pattern of the second pattern group is included in a plurality of combined patterns, only the included pattern is deleted and the pattern combination is changed. .

This makes it possible to determine the positions of the sewing needle and the feed adjuster, prevent collisions between the sewing needle and the sewing tool, and minimize damage to the sewn product.

Embodiment E] An embodiment of the present invention will be described below with reference to the drawings.

First, the basic configuration of this embodiment will be explained with reference to FIG.

An internal memory 12 provided in the sewing machine frame 10 indicated by a dashed line in FIG. 1 stores the first pattern group,
The external memory 14, which is removably attached to the sewing machine frame 10, stores the second pattern group. The pattern combination means 16 is provided for designating either one of the memories 12.14 and sequentially designating desired patterns from the rain pattern group to perform pattern combination. In accordance with the memory designation of the pattern combination means 16, the data selection means 18 supplies stitch data regarding the desired pattern in the designated memory to the stitch forming device 20, and the desired pattern is formed by the operation of the stitch forming device 20. be done.

The determining means 22 determines whether all of the plurality of patterns combined by the pattern combining means 16 belong to the first pattern group or whether a pattern of the second pattern group is included in the plurality of patterns. The control means 24 controls the pattern combination means 16 according to the detection result of the memory attachment/removal detection means 26 which detects the attachment/detachment state of the external memory 14 and the discrimination result of the discrimination means 22, and controls all of the plurality of combined patterns. The pattern combination state by the pattern combination means 16 is maintained when the pattern belongs to the first pattern group, and when removal of the external memory 14 is detected in a state where the combination pattern includes a pattern of the second pattern group, the pattern combination state is maintained. The patterns of the second pattern group are searched and deleted from the combination patterns, and the combination patterns are reconfigured using the remaining patterns.

Further, details of this embodiment will be explained with reference to FIGS. 2 to 8.

FIG. 2 shows the appearance of the sewing machine of this embodiment. A needle bar 32, which can move vertically and swing horizontally, is disposed at the head of an upper arm 30 constituting the sewing machine frame 10. A sewing needle 34 is attached to the lower end. In order to transfer the work cloth, a feed dog 38 to which a four-movement feed is applied by a known feed mechanism is arranged within the bed 36, and the feed movement is controlled by a feed adjuster (not shown).

A display board 40 is fixed to the front surface of the upper arm 30 on which figures and two-digit corresponding numbers are drawn for each pattern in the first pattern group that is frequently used.

Further, on the front side of the leg binding part 42, there are ten input keys 44 corresponding to the numbers "0" to "9" respectively for specifying a desired pattern using the corresponding number, and a plurality of patterns. A combination key 46 that can be operated to combine the two is provided. A numeric display 48 is provided to visually display the corresponding number input using the input key 44. Either the internal memory 12 provided in the sewing machine frame 10 for storing the first pattern group that is used frequently or the external memory 14 that stores the second pattern BY that is used less frequently is selected. For this purpose, a memory selection switch 50 is provided which is movable between two selection positions, and a light emitting diode (hereinafter referred to as LED) 52 is arranged on the left side of the switch 50 to display the selection state of the external memory 14.

The external memory 14 is housed in a memory cassette 54, and the cassette is configured to be detachable from a storage chamber 56 formed horizontally in the pillar section 42, as shown in FIG. A connector 58 for connecting the external memory 14 to a central processing unit 70, which will be described later, is arranged on the left side of the storage chamber 56. Further, a limit switch 60 is disposed close to the storage chamber 56 to detect whether the memory cassette 54 is attached or removed, and the limit switch 60 corresponds to the memory attachment/detaching detection means 26 in FIG.

Additionally, a start/stop switch 64 is disposed at the head of the upper arm 30 for starting and stopping the sewing machine motor 62.

The electrical configuration of this embodiment will be explained with reference to FIG.

Memory selection switch 50 provides a low level output signal PS1 to central processing unit 70 when in the left position as shown in FIG. outputs a low level signal DM that turns off the LED 52. Conversely, when switched to the right position to select external memory 14,
A high-level output signal PS1 is supplied to the central processing unit 70, which causes the central processing unit 70 to output a high-level signal DM that lights up the LED 52. When the input key 44 is operated to select a desired pattern from the pattern group in the memory selected by the memory selection switch 50, the encoder 72 generates a two-digit correspondence with the code signal PN representing the input corresponding number. A high-level pulse PS2 synchronized with the completion of number input is supplied to the central processing unit 70. At this time, the central processing @@70 outputs a signal ON for displaying the corresponding number to the number display 48 in accordance with the signal PN.

Further, the combination key 46 supplies a high level output signal PS3 when operated and a low level output signal PS3 when released to the central processing unit 7o, and the limit switch 60 supplies a high level output signal PS3 when the memory cassette 54 is installed. Signal PS
4 supplies a low level output signal PS4 to the central processing unit 70 upon its departure.

The head address memory 74 stores the head address signal HAD of the stitch data group for each pattern stored in both memories 12 and 14, and stores the pattern code converted from the signal PS1 and the signal PN by the central processing unit 70. Signal P
AC and outputs one head address signal HAD. Note that the number of addresses prepared for each pattern in the external memory 14 is set to be constant regardless of the pattern type, and different external memories can be used. In this case, there is no need to change the start address signal AHD related to the external memory in the start address memory 74.

Start address signal 1''A from the start address memory 74
An intermediate memory 76 is provided to sequentially store D in response to the operation of the combination key 46, and while the sewing machine motor 62 is operating, an internal counter C1 of the central processing unit 70 is stored.
The first address signal HAD is stored at the address specified by the counter C1, and while the motor is stopped, the first address signal HAD is output from the address specified by the counter C1.

Input key 449 combination key 46° memory selection switch 50 shown in FIG. En]-da72. The head address memory 74 and the intermediate memory 76 constitute the pattern combination means 16 shown in FIG.

The central processing unit 70 loads the head address signal HAD outputted from the intermediate memory 76 during operation of the sewing machine motor 62 into an internal counter C2, and when the sewing needle 34 reaches a predetermined position, the head address signal HAD is generated from the timing signal generator 78. In response to the high level pulse TP, the counter C2 is advanced from its head address signal HAD. The contents of the counter C2 are supplied to and used to address the memory specified by the memory selection switch 50, and stitch data SD is output from the specified memory to the central processing unit 70. . Then, the central processing unit 70 supplies the stitch data SD to the actuator drive circuit 80, which drives the side swing actuator 82 and the feed actuator 84 to adjust the swing position of the needle bar 32 and the above-mentioned feed adjuster. The position is set. Actuator drive circuit 80 and both actuators 82, 84 constitute seam forming device 20 in FIG.

The motor drive control device 86 controls the operation of the sewing machine motor 62, and when the start/stop switch 64 is operated while the motor is stopped, it outputs a high level signal C indicating the operation of the motor.
M is output to the central processing unit 70 and the motor 62 is activated. On the other hand, when the motor is running, the start/stop switch 6
4 is operated, a low level signal CM indicating the stop of the motor is output to the central processing unit 70, and the motor 62
to stop. M1=, the motor drive cutting control device 8'6 operates the motor 6 in accordance with the motor stop command from the central processing unit 70.
Stop 2.

The operation of this embodiment having the configuration described above will be explained according to the flowcharts shown in FIGS. 5 to 8. In the flowchart, the high level state of the signal is represented by [11], and the low level state of the signal is represented by "0".

First, when the sewing machine is powered on, initial settings are performed, and the counters C1 and C2 mentioned above and the internal counters C3 and C4, which are used when deleting a pattern from the external memory 14 from among a plurality of combined patterns, are set. is reset, and
There are many flags CF, sF, MF,
CMF is set to "0".

When the memory cassette 54 is attached to the sewing machine frame 10 in order to combine the pattern in the internal memory 12 and the pattern in the external memory 14, the limit switch 60 sends a high level signal P'S4 to the central processing unit 70. Output to. Thereafter, while holding the memory selection switch 50' in the left position shown in FIG. ” is determined and flag BF is “0”
, and the signal PS2 from the encoder 72 is “1”.
is determined, and the -code signal PN is stored in the internal memory M1. Then rOJ of flag BF is determined and signal P
S1 and ]-code signal PN are converted into a pattern code signal PΔC representing the desired pattern according to an internal memory conversion. Since the flag CF is currently "0", all contents of the intermediate memory 76 are cleared, and the start address signal HAD is read out from the start address memory 74 by the code signal PAC, and the start address signal HAD is sent to the counter C1.
is written to the address of intermediate memory 76 specified by . After this series of operations is executed, the signal DN is outputted to the number display 48 according to the contents of the memory M1, and the corresponding number of the desired pattern is displayed on the display 48.

Next, in order to combine the patterns in the external memory 14, when the memory selection switch 50 is switched from the left position shown in FIG. 2 to the right position and the combination key 46 is operated, the memory selection switch 50 and the combination key are pressed. 46, a high level signal PS1 and a high level signal PS3 are sent to the central processing unit 7.
Output to 0. In the central processing unit 70, the signal P
The flag BF is set to 11 when S1 and the signal PS4 are determined to be 1, and the J counter C1 is advanced and the flag CF is set to 111. After this, when the corresponding number of the desired pattern in the external memory 1/4 is input, "1" of the signal PS2 from the encoder 72 is determined as described above, the code signal PN is temporarily stored in the memory M1, and the flag BF The state of is determined and conversion for external memory is executed. According to this conversion for external memory, signal PS1 and code signal P
N is converted into a pattern code signal PAC representing the desired pattern, and flag MF is set to "1" and flag C is
The state of F is determined. Since this flag CF is set to "1", the intermediate memory 76 is not cleared, and ]-
The head address signal HAD is read out by the code signal PAC, the head address signal HAD is written into the intermediate memory 76 by the counter C1, and the flag CF is set to "0".

By repeating the operations and actions described above, both memories 1
A plurality of patterns in 2.14 can be combined, and the head address signals HAD related to the combined patterns are temporarily stored in the intermediate memory 76 in the order of combination. Further, as understood from the above, the central processing unit 70 determines whether the pattern specified by the input key 44 belongs to the first pattern group in the internal memory 12 or the second pattern group in the external memory 14. The operation of determining whether the pattern belongs to a pattern group is executed in steps ST1 to ST4 shown in FIG. The flag MF is set to "0" in step ST5 as the generation of the first signal when all of the patterns belong to the first pattern group, and the pattern of the second pattern group among the plurality of combined patterns is included, the flag MF is set to "1.1" in step ST6 as the second signal is generated.Therefore, by executing steps STI to ST6, the central processing unit 70 determines the determination means shown in FIG. Perform 22 operations.

External memory 14 is stored in the plurality of patterns combined as described above.
If the operator accidentally removes the memory cassette 54 in a state where the flag ME is set to [11], the limit switch 60 detects the removal and sets a low level A signal PS4 is supplied to the central processing unit 70.

In the central processing unit 70, it is determined that the flag MF is "1" and the signal PS4 is [0], and a signal that causes the LED 52 to blink in order to notify the operator of this abnormal condition is sent to the timer set time. Output. During the set time, the memory cassette 54 is inserted, and if there is no memory cassette 54, the first pattern deletion routine according to the flowchart shown in FIG. 6 is executed.

When the first pattern deletion routine is started, both counters C1 and C3 are first reset, and from the address in the intermediate memory 76 specified by the counter C3, a leading address signal regarding the first pattern in the combination pattern is sent. H.A.D.
is read out, and its address signal 1-IAD is temporarily stored in internal memory M2. Then, it is determined whether the contents of the internal memory M2 are "0" or not, but in this embodiment, the zero address is not used as the start address for each pattern in both memories 12 and 14, and this I
C, it is determined that the contents of the memory M2 are not "0". Also, the start address signal 1-IA in memory M2
It is determined whether the value of the address represented by D is greater than or equal to the minimum value N of the start addresses assigned to the patterns in the external memory 14. When it is equal to or greater than the minimum value N, the process moves directly to the step of advancing the counter C3.1. When it is smaller than the minimum value N, the start address signal HA in the memory M2 is sent to the address of the intermediate memory 76 specified by the counter C1.
After D is written, counter C3 is advanced.

The head address signal HAD is read out again by the advanced counter C3 and stored in the memory M2, as described above.
= A series of operations is repeated. As a result, the head address signal 1''A-D related to the pattern in the external memory 14 among the plurality of combined and combined patterns is deleted from the intermediate memory 76,
Only the leading address signal 1''A'' related to the pattern in the internal memory 12 in the combination pattern is sent to the intermediate memory 7 in the order of combination.
6 and is retained.

After all the head address signals H△D in the intermediate memory 76 are checked, the content "0" of the memory M2 is separated by 111,
Subsequently, the contents of the counter C1 are determined. When the content of the counter C1 is [01, it means that the combination pattern is composed only of the patterns in the external memory 14, and at this time, the content of the intermediate memory is cleared and the intermediate pattern specified by the counter C1 is The straight stitch start address signal +1A () is written to the address of the memory 76,
Flags MF, BF, and CF are all set to rOJ, and an abnormality display code signal related to the display rFFJ indicating an abnormal state is stored in memory M1.

By executing the first pattern deletion routine described above, the contents of the intermediate memory 76 are changed, and after this routine is finished, the operation shifts to the flowchart shown in FIG. A display rFFJ appears on the display 48 to inform of the abnormal condition.

Therefore, the central processing unit 70 executes step ST7. shown in FIG. By executing ST8 and the first pattern deletion routine shown in FIG. 6, the control means 24 shown in FIG. 1 operates.

Next, the operation of forming a combination pattern in which the patterns in both memories 12 and 14 are combined will be explained.

When the start/stop switch 64 is operated to start the sewing machine motor 62, the motor drive control device 86 supplies a high level signal CM representing motor operation to the central processing unit 70. In the central processing unit 70, the signal CM “1”
When it is determined that this is the case, the operation according to the flowchart of FIG. 7 is started, and first, the counter C1 is reset. The head address signal HAD of the initially specified pattern is read out from the intermediate memory 76 by the counter C1, and the counter C1
2 is loaded. It is determined in step ST9 whether the value of the address represented by the head address signal HAD is greater than or equal to the minimum value N, and when it is greater than or equal to the minimum value N, the flag CMF is set to "1" and is smaller than the minimum value N. Sometimes the flag CMF is set to "0". Therefore, when the flag CMF is "1", it means that the head address signal HAD of the counter C2 is related to the pattern in the external memory 14, and when the flag CMF is "0", the head address signal HAD of the counter C2 is related to the pattern in the external memory 14. ”△D is internal memory 1
This means that it is related to the pattern in 2.

After that, the state of the flag CMF is determined in step 5T10, and when the flag CMF is "1", the counter C
The contents of counter C2 are supplied to the external memory 14, and the contents of the counter C2 are supplied to the internal memory 12 when [0, 1]. Stitch data SD is read out from the memory addressed by the counter C2. Therefore, the central processing unit 170 performs steps 5T10 to 5T1 shown in FIG.
By executing step 2, the data selection means 18 shown in FIG. 1 operates. The stitch data group related to each pattern in both memories 12; 14 includes end data indicating the end of the pattern, and it is determined whether or not the read stitch data SD has the end data C. It is determined in step 5T13. When it is not the end data, the stitch data SD is output to the actuator drive circuit 80 and used for forming each stitch. And timing signal generator 78
The state of the signal TP from rO
J, the states of flag CMF, signal PS4, and signal CM are repeatedly determined. When it is determined that the signal TP has changed to "1", the counter C2 is advanced and the next stitch data is read out.

When the formation of the first specified pattern is completed, step 5
At T13, it is determined whether the end data continues to occur, the counter C1 is advanced, the first address signal HAD is read from the address of the intermediate memory 76 specified by the contents, and the contents of the address signal HAD are determined. At this stage, the content of the head address signal HAD is "0".
'', the head address signal HAD of the pattern secondly designated by this counter C1 is read from the intermediate memory 76 and loaded into the counter C2. This second designated pattern is also formed by executing the same operation as the first designated pattern described above, and when the pattern formation is completed, the counter C1 is further advanced and the next pattern is formed. be done.

After C1, all of the IADs (initial address signals) related to the combined patterns are examined, and then the counter C1
When the content of the intermediate memory 76 read out becomes "0", the counter C1 is reset and the initially designated pattern is formed again.

When the start/stop switch 64 is operated to stop pattern formation, the motor drive control device 86 starts an operation to stop the motor 62 and supplies a low level signal CM indicating the motor stop to the central processing unit 70. do. "0" of the signal CM is determined in step 5T14, the counter C1 is reset, and the flag CF is set to rOJ.
, and the operation of the flowchart shown in FIG. 5 can be executed.

Now, when the printer cassette 54 is removed while the pattern in the external memory 14 is being formed in the combination pattern, the limit switch 60 supplies a low level signal PS4 to the central processing unit 70. At this time, the flag CMF is set to "1" because the pattern in the external memory 14 is formed, and the states of the flags CM and F are determined in step 5T15 shown in FIG. "0" of the signal PS4 is determined in step 5T16, and the second pattern deletion routine shown in FIG. 8 is executed.

When the second pattern deletion routine is started, the contents of the counter C1 are loaded into the counters C3 and C4 respectively, the counter C3 is advanced, and the head address signal HAQ is read out from the intermediate memory 76 according to the contents, and the memory M
2 is stored. Subsequently, determination as to whether the content of the memory M2 is "0" or not and determination as to whether or not the content is greater than or equal to the minimum value N described above are executed in sequence, and when the content is less than the minimum value N, the intermediate value specified by the counter C4 is After the contents of the memory M2 are written to the address of the memory 76 and the counter C4 is advanced, the counter C3 is advanced, and when the minimum value N or more is exceeded, the counter C3 is directly advanced. As the counter C3 advances, the head address signal HAD is read out again. After the IAD (starting address signal for the last pattern in the combination pattern) is inspected, the contents of the memory M2 are set to "0".
is determined, both counters 01. The contents of C4 are compared, but unless all the patterns combined after the pattern formed when the memory cassette 54 is removed from the memory cassette 54 are the patterns in the external memory 14, both counters C1 and C4 are compared.
Since the contents of are different, flags MF and BF are both r.
OJ is set to the above-mentioned abnormality display code signal or memory M
1 is stored. Similarly to the first pattern deletion routine, by executing the second pattern deletion routine, the pattern in the external memory 14 is deleted from the combination of patterns and the pattern combination is changed. Then, a combination pattern consisting only of the patterns in the internal memory 12 changed by the second pattern deletion routine continues to be formed after the memory cassette 54 is removed, and during the formation of the combination pattern, step 5T1 shown in FIG.
By executing step 7, an abnormality display rFFJ appears on the numerical display 48 to inform the operator of the abnormal state.

As described above, in this embodiment, when the patterns in the external memory 14 are combined, the memory cassette 5
When the memory cassette 4 is removed, the abnormal state is notified to the operator by blinking the LED 52 for a predetermined period of time, and the memory cassette 54 is removed.
The pattern in the external memory 14 is automatically deleted only when the abnormal condition is not resolved by the attachment of the external memory 14. Therefore, even if the memory cassette 54 is erroneously removed, destruction of the combination pattern can be prevented as much as possible, which is advantageous in improving the ease of use of the sewing machine.

The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit thereof.

[Effect] As is clear from the detailed description above, the present invention provides that the hook IC, in which all of the plurality of patterns combined by the pattern combination means belong to the first pattern group in the internal memory, a discrimination means for discriminating whether a pattern of a second pattern group in an external memory is included in the pattern; By providing a control means for changing the pattern combination by deleting the pattern of the second pattern group when the external memory is removed while the pattern of the second pattern group is included in the plurality of patterns, Even if the external memory is erased when all of the combination patterns belong to the first pattern group, the combination patterns will be retained without being destroyed, making it unnecessary to perform the combination operation again, which is advantageous for sewing machines in the Song Dynasty. . Furthermore, if the external memory is accidentally removed while the combination pattern includes a pattern from the second pattern group, only the second pattern group will be deleted and the pattern combination will be changed. The positions of the sewing needle and the feed adjuster can be fixed at positions relative to the patterns of the first pattern group, preventing collision between the sewing needle and the sewing tool, and minimizing damage to the sewn product due to pattern distortion. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a drawing showing the basic configuration of an embodiment of the present invention, and FIG.
The figure is an external view of the sewing machine of this embodiment, FIG. 3 is an enlarged cross-sectional view showing the installed state of the memory cassette, FIG. 4 is a block diagram showing the electrical configuration of this embodiment, and FIGS. 5 to 8 are It is a flowchart for explaining the operation of the central processing unit,
Figure 5 is a 70-diameter diagram for explaining the pull operation when the sewing machine motor is stopped, Figure 6 is a flowchart for explaining the first pattern deletion routine, and Figure 7 is a flowchart for explaining the first pattern deletion routine. Figure 8 is a flowchart for explaining the second pattern deletion routine. 10: Sewing machine frame, 12: Internal memory, 14: External memory, 16: Pattern combination means. , 22: Discrimination means, 24: Control means, 26: Memory attachment/detachment detection means, 44: Input key 1
46: Combination key, 50: Memory selection switch, 70:
Central processing unit, ST1 to 5T17: Step, MF:
It's a flag. Figure 3 Figure 1 Figure 8

Claims (1)

[Scope of Claims] 1. An internal memory provided within the sewing machine frame and storing a first pattern group consisting of a plurality of predetermined patterns; comprising an external memory for storing a second pattern group consisting of a plurality of patterns different from the patterns in the first pattern group, and a pattern combination means for sequentially specifying and combining a plurality of patterns in the rain pattern group, In a sewing machine that forms a plurality of combined patterns, a first signal is generated when all of the plurality of combined patterns belong to the first pattern group, and a first signal is generated when all of the plurality of combined patterns belong to the first pattern group, and When a pattern of the second pattern group is included, the second
a discriminating means for generating a signal; retaining the pattern combination by the pattern combining means regardless of whether the external memory is attached or detached when the first signal is generated; and when the second signal is generated, the external memory a removable external memory including a control means for changing the pattern combination by deleting a pattern belonging to the second pattern group from among the plurality of combined patterns when the sewing machine is removed from the sewing machine frame. sewing machine.