JPH0154074B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to a sewing machine that is capable of audibly displaying operations to be performed by a worker before sewing and abnormal conditions of the sewing machine, and in particular, the present invention relates to a sewing machine that can be stopped or stopped arbitrarily depending on the type of the audible display. Regarding sewing machines that can be used. BACKGROUND OF THE INVENTION A sewing machine has been proposed that displays the details of the sewing machine status, such as the operator's pattern selection status and abnormal status, by voice. In this type of sewing machine, even if the operator accidentally selects a pattern, the content is confirmed by voice in advance, which prevents incorrect sewing.
Since the content of the abnormal state is specifically notified by voice, it has the characteristic that it can be quickly processed. Problems to be Solved by the Invention However, with conventional sewing machines, experienced workers are already familiar with the operations required to perform sewing using the sewing machine before sewing. An audio display is not necessary from the beginning, and even experienced workers need an audio display of important abnormal conditions that can lead to sewing machine failure. If you listen to the initial part of the audio display, you can understand the entire content of the audio display, so
It becomes rather tedious to listen to the series of audio displays all the way to the end. Furthermore, even beginners may be able to grasp the entire contents of the audio display by listening to the initial part of the audio display, and it becomes rather troublesome to listen to the series of audio displays until the end. The present invention has been made in order to solve the above-mentioned problems, and its purpose is to provide an unnecessary warning to experienced workers without stopping the generation of an audio display in accordance with an important abnormality warning audio signal that could lead to a failure of the sewing machine. A sewing machine capable of displaying a sound can be switched to stop only the sound display according to a sound signal for operating instructions, and can also stop the sound display in the middle of the sound display according to the operator's needs. It is about providing. Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a sound system for operating instructions that is predetermined according to the operation contents that the operator should perform before sewing, which is required for sewing with a sewing machine. It includes a memory having a plurality of storage locations for respectively storing signals and abnormality alarm audio signals predetermined according to the type of abnormality state of the sewing machine, and the plurality of types of audio signals can be input to the operator's operation or the sewing machine's operation. An audio signal generator that can selectively generate an audio signal in response to a change in operating conditions; a speaker that is installed in the casing of the sewing machine and operates in accordance with the audio signal generated from the audio signal generator; and the casing of the sewing machine. A manually operable changeover switch provided in the
A first audio signal control device that operates in response to the operation state of the changeover switch in order to allow the generation of the abnormality warning audio signal and stop the generation of the operation instruction audio signal; The second audio signal control device is provided with a manually operable operating body, and a second audio signal control device that is activated in response to an operation of the operating body to stop generation of an audio signal from the audio signal generating device. Function In the sewing machine configured as described above, the audio display of the operations that the operator must perform before sewing is stopped according to the operating state of the changeover switch, and the sewing machine is operated. The audio display of an abnormal state is allowed, and the audio display is stopped in the middle of the occurrence according to the operation of the operating body. Effects of the Invention As described in detail above, in the present invention, by operating the changeover switch, the first audio signal control device is activated to allow generation of an abnormality alarm signal, and the operation instruction audio is activated. Since the generation of the signal is stopped, the voice display that follows the operation instruction voice signal, which is unnecessary for experienced workers, is not performed, which relieves the worker from the trouble caused by the voice display, and also prevents the sewing machine from malfunctioning. The audio display that follows the important abnormality warning audio signal that leads to the problem is generated without stopping, and the abnormal state of the sewing machine can be quickly and accurately notified to the operator. Since the audio signal control device (2) is activated and the generation of a series of audio signals is stopped in the middle, unnecessary audio displays are not made for the worker, especially when the audio is displayed for a relatively long time. An effect can be obtained in that the operator can be freed from the trouble caused by the voice display. Configuration of Embodiment Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. In FIGS. 1 and 2, reference numeral 2 denotes a base portion of the sewing machine frame, and a bracket arm 4 is horizontally disposed on this base portion 2 with one end supported by a pillar portion 6 in a cantilevered manner. It is set up. A head 8 is formed on the free end side of the bracket arm 4,
The head 8 includes a needle bar 10 that can be moved up and down and reciprocated and swung laterally by a known up-and-down mechanism and a swing mechanism (not shown), and a presser bar 12 that can be raised and lowered by an operator's operation. It is provided. A sewing needle 14 is attached to the lower end of the needle bar 10, and a presser foot 16 is attached to the lower end of the presser bar 12. A rack 18 is fixed to this presser foot 16, and a rotary potentiometer 20
However, the pinion 22 fixed to the tip of the rotating shaft
is fixed to the head 8 in a state in which it engages with the rack 18, so that the position of the presser foot 16 can be detected electrically. A throat plate 24 is attached to the base portion 2 below the needle bar 10, and the feed direction and feed amount of the work cloth are adjusted at the center of the needle plate 24 by a known feed adjustment mechanism (not shown). A feed dog 26 is provided. The feed dog 26 and the needle bar 10 enable relative movement between the sewing needle 14 and the workpiece cloth, so that a desired stitch pattern can be formed on the workpiece cloth. A known mechanism for detecting lower thread consumption is provided within the base portion 2 below the throat plate 24. That is, as shown in FIG. 3, on both sides of the bobbin case 30 that houses the bobbin 28, the end surfaces 36 and 38 of the light-emitting optical fiber bundle 32 and the light-receiving optical fiber bundle 34 face each other. In addition to being permanently installed,
A notch 40 is provided in the bobbin case 30 on a straight line connecting these end surfaces 36 and 38, so that when the bobbin thread wound around the bobbin 28 decreases, the bobbin case 30 moves from the end surface 36 to the end surface 30.
Light can pass through towards 8.
In addition, 42 is a condensing lens, and 44 is a bobbin 28.
It is an arm that fixes the Returning to FIG. 1, a start/stop push button 46, which is an operating body for starting and stopping the sewing machine motor and issuing an audio alarm, and a reverse stitch push button 48, for forming reverse stitches, are arranged at the lower front of the head 8. It is set up. A repeat push button 5, which is an operating body for outputting the audio again, is located at the lower front of the pillar section 6.
0, a voice stop push button 52, which is an operating body for stopping voice output, and an abnormality cause voice push button 54, which outputs a predetermined cause of abnormality of the sewing machine, are provided, and these push buttons 50, 52, 54 are provided. A speaker 56 is provided below. Furthermore, a display board 66 is fixed to the front surface of the bracket arm 4 on which figures representing 13 types of stitch patterns, such as a straight stitch 58, a basting stitch 60, a bartack stitch 62, and a buttonhole stitch 64 are drawn. There are 13 pattern selection buttons 6 below each of these figures.
8 are arranged. The pattern selection push button 68 is operated to selectively select a desired stitch pattern from among a plurality of stitch patterns. And display board 66
A voice stop changeover switch 70, which is an operating device for stopping the voice generation other than the abnormal alarm of the sewing machine, is disposed on the right side. FIG. 4 shows the electrical configuration of the pattern sewing machine configured as described above. One terminal of an automatic return type switch 72 that is closed when the pattern selection push button 68 is pressed is grounded, and the other terminal is connected to a resistor 74.
It is connected to a + power supply via an inverter 76 and to a NAND circuit 78 via an inverter 76 .
Further, one terminal of the voice stop changeover switch 70 is grounded, and the other terminal is connected to a + power source via a resistor 80 and to a NAND circuit 78 and a NAND circuit 82. Furthermore, one terminal of an automatic return type switch 84 that is closed in conjunction with the pressing operation of the abnormality cause voice push button 54 is grounded, and the other terminal is connected to the + power source via a resistor 86 and connected to the inverter. It is connected to the NAND circuit 82 via 88. Therefore, when the voice stop changeover switch 70 is open, when the pattern selection push button 68 is pressed, the push button 6 is pressed.
Any one of the signals SP1 to SP13 corresponding to 8 is sent from the NAND circuit 78 to the pattern display selection circuit 9
0 as an "L" level signal. In the same case where the voice stop switch 70 is open, when the abnormality cause voice push button 54 is pressed, the abnormality cause voice command signal SSP is supplied from the NAND circuit 82 to the sewing tension display control circuit 92. However, when the voice stop changeover switch 70 is closed, the gates of the respective NAND circuits 78 and 82 are closed and the signals SP1 to SP1 are
3 and the abnormality cause voice command signal SSP is not output. The pattern display control circuit 90 is configured as shown in FIG. That is, signals SP1 to SP
13 is supplied to the encoder 94, the pattern signal SM representing the selected pattern is sent from the encoder 94 to the address memory 96 and the needle bar 10.
and a known stitch information generating device (not shown) for positioning the feed adjuster. In the address memory 96, a series of audio data corresponding to the supplied pattern signal SM is stored in order to display the stitch pattern represented by the supplied pattern signal SM in a voice. A leading address signal SA1 representing the leading address in an audio data memory 98 (to be described later) and a termination address signal SB1 representing the termination address are supplied to input ports DA1 and DB1 of multiplexer 100. On the other hand, the encoder 94 outputs signals SP1 to SP1.
When any one of the 3 signals is supplied, it becomes “L”
A level selection operation signal SH is supplied to the clock input terminal CK of the JK flip-flop circuit 102. When the J-K flip-flop circuit 102 is supplied with the selection operation signal SH, it enters the set state and becomes "H".
A level port select signal SP3 is supplied from its output terminal Q to a port select terminal G1 of the multiplexer 100 and a timing logic circuit 104, which will be described later. This J-K flip-flop circuit 1
The state of 02 means that the latch completion signal SC1 is sent from the timing logic circuit 104 to its clear input terminal CLR.
held until supplied. Therefore, the pattern display control circuit 90 supplies the corresponding start address signal SA1 and end address signal SB1 to the multiplexer 100 in order to audibly display the stitch pattern selected by operating the pattern selection push button 68. It has the function of The sewing tension display control circuit 92 is constructed as shown in FIG. That is, the abnormality cause voice command signal SSP is transmitted to the J-K flip-flop circuit 106.
When supplied to the clock input terminal CK of the circuit 106, the circuit 106 is set, and the "H" level port select signal SP1 is sent from the output terminal Q to the port select terminal G2 of the multiplexer 100, the timing logic circuit 104, and the address counter 10.
It is supplied to the clock input terminal CK of 8. This J
The state of the -K flip-flop circuit 106 is maintained until the latch completion signal SC1 is applied to its clear input terminal CLR. address counter 108
is a frequency division counter whose count content is zero when it is in the reset state, but when the count content reaches "6" after counting the port select signal SP1, the count content becomes "1" again. A count signal SK representing the address is supplied to the address memory 110.
In the address memory 110, in order to audibly display the cause of the abnormality in response to the supplied count signal SK, a start address representing the start address of the audio data memory 98 in which a series of audio data representing the cause of the abnormality is stored is stored. The signal SA2 and the termination address signal SB2 representing the termination address are input to the input ports DA2 and DB2 of the multiplexer 100.
is supplied to The reset input terminal RT of the address counter 108 receives the power-on signal SRT, which is an "L" level pulse signal, from the AND circuit 11.
2, and a motor start command signal SC2 is supplied to the motor drive command logic circuit 11, which will be described later.
4 through a one-shot multi-circuit 116 and an AND circuit 112. Therefore, when at least one of the signals SRT and SC2 is generated, the address counter 108 is reset. Therefore, the sewing tension display control circuit 92 sequentially displays the details and causes of six types of sewing tension problems in response to the operation of the abnormality cause voice push button 54, which is operated when a problem occurs in the sewing machine's sewing tension. For audio display, start address signal corresponding to the operation
It has a function of supplying SA2 and the end address signal SB2 to the multiplexer 100. The sewing machine includes a lock detector 118 and a bobbin thread consumption detector 120, which are detectors that detect the occurrence of an abnormal condition that interferes with the stitch forming operation and generate an abnormality detection signal.
and a presser foot lift detector 122 are provided. The sewing machine motor lock detector 118 detects the motor start command signal SC2 from the motor drive command logic circuit 1.
14, a known mechanism is provided which detects the rotational state of the sewing machine main shaft and outputs a lock signal SDT1 if the rotational speed of the sewing machine main shaft has not reached normal rotation. The bobbin thread consumption detector 120 includes a mechanism shown in FIG. The consumption signal SDT2 is configured to be output. Further, the presser foot rise detector 122 is
Mechanism of presser bar 12 and presser bar 12 shown in FIG.
and a circuit for comparing with a predetermined voltage value corresponding to a predetermined height of the presser bar 12, and when the output voltage of the potentiometer 20 corresponding to the actual height of the presser bar 12 exceeds the voltage value, a presser foot rise signal is generated. SDT3 is now output. These “L” level signals SDT1, which are abnormality detection signals,
SDT2 and SDT3 are each alarm display circuit 12
4 and the motor drive command logic circuit 114. The alarm display control circuit 124 is configured as shown in FIG. That is, the latch completion signal
SC1 is supplied to the clear terminal CLR and an alarm command signal is sent from the motor drive command logic circuit 114.
Three J-K flip-flop circuits 126, 12 whose SCK is supplied to the clock input terminal CK via AND circuits 131, 132, 134, respectively.
It is equipped with 8,130. and lock signal
SDT1 is inverter 133 and AND circuit 1
31 to the J-K flip-flop circuit 126
is supplied to the clock input terminal CK of
It is supplied to the clock input terminal CK of the JK flip-flop circuit 128 via an AND circuit 132, and to the clock input terminal CK of the JK flip-flop circuit 130 via an AND circuit 134. The bobbin thread consumption signal SDT2 is sent to the inverter 13
6 and the AND circuit 132 to the clock input terminal CK of the J-K flip-flop circuit 128.
-K is supplied to the clock input terminal CK of the flip-flop circuit 130. The presser foot rising signal SDT3 is sent to J via the inverter 138 and the AND circuit 134.
-K is supplied to the clock input terminal CK of the flip-flop circuit 130. "H" level output signals representing the set states of these JK flip-flop circuits 126, 128, 130 are supplied from their output terminals Q to an OR circuit 140 and an address memory 142, respectively. The output signal of this OR circuit 140 is supplied to the port select terminal G3 of the multiplexer 100 and the timing logic circuit 104 as a port select signal SP2. Also,
In the address memory 142, in order to audibly display an alarm corresponding to the set state of the JK flip-flop circuits 126, 128, 130, the first address in the audio data memory 98 in which a series of audio data representing the alarm is stored is stored. A start address signal SA3 representing an address and an end address signal SB3 representing an end address are supplied to input ports DA3 and DB3 of the multiplexer 100. Therefore, when the alarm command signal SCK is generated, the alarm display circuit 124 uses the start address signal SA3 and the end address signal SA3 to display alarm contents corresponding to the lock signal SDT1, the bobbin thread consumption signal SDT2, and the presser foot rising signal SDT3. The address signal SB3 is supplied to the multiplexer 100, and when these signals SDT1, SDT2, and SDT3 are generated simultaneously, the lock signal SDT1 is supplied to the other signals SDT2 and SDT3.
It has a function of giving priority to SDT3 and giving priority to bobbin thread consumption signal SDT2 over signal SDT3. In the multiplexer 100, when the port select signal SP3 is supplied to the port select terminal G1, the port input terminal DA
Signals SA1 and SB supplied to 1 and DB1
1 connects its output terminals QA and QB to the start address latch 144 and the end address latch 14.
6. Similarly, when port select signal SP1 is supplied to port select terminal G2, port input terminals DA2 and DB2
The signals SA2 and SB2 supplied to the port are output, and when the port select signal SP2 is supplied to the port select terminal G3, the signals SA3 and SB3 supplied to the port input terminals DA3 and DB3 are output. It's getting old. In the start address latch 144 and the end address latch 146, when the load signal SL is supplied from the timing logic circuit 104, the signal supplied to the input terminal thereof is temporarily stored.
Respective signals representing the stored contents are supplied to an address counter 148 and an input terminal DA of a comparator 150, which will be described later. Timing logic circuit 104 is configured as shown in FIG. That is, comparator 150
The utterance end signal SC3 from the clear input terminal CLR
J-K flip-flop circuit 152 supplied to
is provided, and the port select signal SP2 is applied to the clock input terminal CK of the J-K flip-flop circuit 152 and the one-shot multi circuit 15.
4. Port select signal SP1
and SP3 are supplied to an OR circuit 160 via one-shot multi-circuits 156 and 158. The output signal of this OR circuit 160 and the "H" level output signal representing the reset state of the JK flip-flop circuit 152 are supplied to an AND circuit 162. The output signal of the AND circuit 162 and the output signal of the one-shot multi circuit 154 are supplied to an OR circuit 164. The output signal of this OR circuit 164 is the one-shot multi-circuit 1
66 and the inverter 167 as the “L” level load signal SL.
46, and is also supplied to the pattern display control circuit 90, sewing tension display control circuit 92, alarm display control circuit 124 and AND circuit 172 as an "L" level latch completion signal SC1 via one-shot multi-circuits 166, 168 and 170. is supplied to
Therefore, when any of the port select signals SP1, SP2, and SP3 is supplied, the timing logic circuit 104 outputs a constant value corresponding to the output pulse axis of the corresponding one-shot multi-circuit 156, 154, and 158. Load signal SL after time
When the output of the signal SL is completed, the latch completion signal SC1 is output after a certain period of time corresponding to the output pulse width of the one-shot multi-circuit 168.
and if the port select signal SP2 is supplied first, the port select signal SP2 is supplied thereafter until the warning display ends.
It has a function of blocking the output of the load signal SL and latch completion signal SC1 based on SP3 and SP1. The motor drive command logic circuit 114 is configured as shown in FIG. That is, the "L" level operation signal SMC is sent to the one-shot multi-circuit 17 from the switch 174, which is closed in conjunction with the pressing operation of the automatic return type start/stop push button 46.
6 to an AND circuit 178 and an exclusive OR circuit 180. On the other hand, the lock signal
SDT1 and bobbin thread consumption signal SDT2 are supplied to AND circuit 178 and AND circuit 182, respectively,
When the output terminal Q of the externally connected JK flip-flop circuit 184 is at the "L" level so as to operate as a so-called binary circuit, the presser foot lift signal is outputted via the tri-state buffer 185 which becomes conductive.
SDT3 is supplied to AND circuit 178. The output signal of the AND circuit 178 is supplied to the clock input terminal CK of the JK flip-flop circuit 184 and to the exclusive OR circuit 180. The output signal of this exclusive OR circuit 180 is then supplied to the alarm display circuit 124 as an alarm command signal SCK. In addition, J-K flip-flop circuit 1
A motor start command signal SC2 at an "H" level representing the set state of the motor 84 is supplied from its output terminal Q to the motor drive control circuit 186 and the lock detector 118. The output signal of the AND circuit 182 is transmitted together with the power-on signal SRT to the tri-state buffer 188 which becomes conductive when the output terminal of the JK flip-flop circuit 184 is at "L" level.
The output signal of the AND circuit 190 is supplied to the clear input terminal CLR of the JK flip-flop circuit 184. Therefore, motor drive command logic circuit 114
When the lock signal SDT1, the bobbin thread consumption signal SDT2, and the presser foot raising signal SDT3 are not supplied (all of them are at "H" level), the motor start command signal SC2 ( "H" level) and stop command signal ("L" level) are output alternately, but the above signal
If any of SDT1, SDT2 and SDT3 is supplied, the motor start command signal SC
2 and at the same time outputs the alarm command signal SCK in response to the input of the operation signal SMC. Furthermore, motor start command signal SC2
When the lock signal SDT1 or the bobbin thread consumption signal SDT2 is supplied to the motor drive command logic circuit 114 while the motor start command signal
The output of SC2 is now stopped. The motor drive control circuit 186 controls the sewing machine motor 19 while the motor start command signal SC2 is supplied.
2 and drives it at a preset speed. One terminal of the switch 194, which is closed when the repeat push button 50 is pressed, is grounded, and the other terminal is grounded to the + power supply via a resistor 196 and connected to the one-shot multi-circuit 198. has been done. The output signal of this one-shot multi-circuit 198 is the latch completion signal SC1.
The output signal of this AND circuit is also supplied to the clock input terminal CK of the JK flip-flop circuit 200 and the load input terminal LD of the address counter 148. Further, one terminal of the switch 202, which is closed when the voice stop button 52 is pressed, is grounded, and the other terminal is connected to the + power supply via the resistor 204, and is connected to the one-shot multi-circuit. 206. The output signal of this one-shot multi-circuit 206 is the utterance end signal SC.
The output signal of the AND circuit 208 is supplied to the clear input terminal CLR of the JK flip-flop circuit 200. The "H" level output signal representing the set state of this J-K flip-flop circuit 200 is
Clock pulse signal output from oscillator 210
It is supplied together with CP to an AND circuit 212, and the output signal of this AND circuit 212 is supplied to a clock input terminal CK of the address counter 148. Therefore, when the repeat push button 50 is pressed or the latch completion signal SC1 is generated, the start address latch 1 is displayed in the address counter 148.
44 output signal (first address signal) is loaded, and the JK flip-flop circuit 20
0 becomes the set state, so the clock pulse signal
CP is supplied to the clock input terminal CK of address counter 148. However, the voice stop push button 52
When is pressed or the utterance end signal SC3 is generated, the JK flip-flop circuit 200 is cleared so that the clock pulse signal CP is blocked by the AND circuit 212 and is not supplied to the address counter 148. . In the address counter 148, when a signal is supplied to its load input terminal LD, the output signal of the start address latch 144 is loaded, and in addition to the numerical value represented by this signal, the clock pulse signal CP supplied to its clock input terminal is counted. At the same time, a signal representing the count contents is sent to the input terminal of the audio data memory 98 and the comparator 150.
Supplied to DB. A signal representing the contents of this count is an address signal SD that sequentially designates the audio data stored in the audio data memory 98. In the comparator 150, when the signal (terminal address signal) supplied to its input terminal DA and the address signal SD supplied to its input terminal DB match, the utterance end signal SC3 of "L" level is outputted. The timing logic circuit 104 is supplied from the terminal QD, and the one-shot multi-circuit 214
and 216 to the reset input terminal RT of the address counter 148. The audio data memory 98 stores a plurality of types of audio data SO for displaying the audio shown in Table 1, for example, and when an address signal SD is supplied to the memory 98, the signal SD specifies the address signal SD. Audio data SO is supplied to D/A converter 218. This audio data SO is a coded digital signal, and the D/A converter 218 converts it into a voltage value represented by the audio data SO and outputs it.
That is, the output signal of the D/A converter 218 is an audio signal SG in which voltage waveforms corresponding to a series of audio data SO are approximately synthesized.
is supplied to a speaker 56 via an amplifier 220, and a sound is displayed from the speaker 56. Therefore, the audio data memory 98
and D/A converter 218 form an audio signal generator. In the above description, the audio data memory 98
Although no specific data is shown regarding the digital data in , since the technology related to digital data as audio data is well known, a description thereof will be omitted.

[Table] Operation of this embodiment The operation of this embodiment will be explained below. When the power switch (not shown) is turned on and power is supplied to the circuit shown in Figure 4, the power-on signal SRT
As a result, the address counter 108 is reset and the JK flip-flop circuit 200 is cleared. At the same time, other J-K flip-flop circuits 102, 106, 126, 128, 13
0, 152, and 184 are also cleared by a circuit not shown. When one of the pattern selection push buttons 68 is operated to select a desired stitch pattern, for example straight stitch 58, a signal SP1 corresponding to the straight stitch is supplied to pattern display control circuit 90. Therefore, from the pattern display control circuit 90, a start address signal SA1 and an end address signal SB for audibly displaying straight stitches are provided.
1 and a port select signal SP3 are output, and the start address signal SA1 and end address signal SB1 are supplied to the start address latch 144 and the end address latch 146 via the multiplexer 100. On the other hand, the timing logic circuit 104 outputs the load signal SL after a certain period of time after the generation of the port select signal SP3, and the start address signal SA1 and the end address signal SB1 are loaded into the start address latch 144 and the end address latch 146. The signals SA1 and SB1 are supplied to the address counter 148 and the comparator 150. Then, a latch completion signal SC1 is outputted from the timing logic circuit 104 after a certain period of time after the generation of the load signal SL. As a result, the J-K flip-flop circuit 200 is set, the address counter 148 is loaded with the first address signal SA1, and the pattern display control circuit 90 is cleared with the J-K flip-flop circuit 102 and the port select signal is loaded. SP3 is no longer output. J-K
When the flip-flop 200 is placed in the set state, the clock pulse signal CP is supplied to the address counter 148 via the AND circuit 212.
The address counter 148 is the first address signal SA
1 and the clock pulse signal CP are sequentially counted, and an address signal SD representing the counted contents is supplied to the audio data memory 98 and the comparator 150. In the audio data memory 98, the address signal SD
Sequential D/A converter 2 for audio data SO specified by
18 so that this converter 218 outputs a series of audio signals SG. Therefore, the speaker 56 starts outputting the audio display shown in No. 1 of Table 1. When this voice display ends, the content of the address signal SD matches the end address signal SB1, so the comparator 150 outputs a voice end signal.
SC3 is output. As a result, the JK flip-flop circuit 200 is cleared and the supply of the clock pulse signal CP is blocked in the AND circuit 212, and at the same time, the address counter 148 is reset and its contents become zero after a certain period of time after the generation of the utterance end signal SC3. Become. Even when other basting stitches 60, bartack tacking stitches 62, and buttonhole stitches 64 are selected by operating the pattern selection push button 68, the numbers in Table 1 are selected according to the same operation as described above. .2,
The voices shown in No. 3 and No. 4 are displayed. In the above condition, start/stop push button 4
When 6 is pressed, one shot multi circuit 176
and the JK flip-flop circuit 1 by the operation signal SMC supplied via the AND circuit 178.
84 is in the set state, and the motor start command signal
SC2 is output from the JK flip-flop circuit 184. As a result, the sewing machine motor 192 is driven, and the needle bar swinging mechanism and feed adjustment mechanism (not shown) are driven, and the desired stitch pattern selected by the pattern selection push button 68 is sewn onto the work cloth. Then, when the start/stop push button 46 is pressed again, the J-K flip-flop circuit 184
is reversed, the motor start command signal SC2 is no longer output, and the sewing machine motor 192 is stopped. In the above sewing operations, if problems with sewing tension such as poor feed of the work cloth or breakage of the needle thread occur,
An abnormality cause voice push button 54 is operated to display the various causes audibly. When this push button 54 is pressed, J-
The K flip-flop circuit 106 is in the set state, and the port select signal SP is output from its output terminal Q.
1 is address counter 108, multiplexer 1
00 and to the timing logic circuit 104. In the address counter 108, the port select signal SP1 is counted and its content is "1".
A count signal SK representing the count contents is supplied to the address memory 110. In the address memory 110, a start address signal SA2 and an end address signal corresponding to the contents of the count signal SK are
SB2 is output, and these signals SA2 and AB2 are supplied via multiplexer 100 to start address latch 144 and end address latch 146. On the other hand, in response to the generation of the port select signal SP1, the timing logic circuit 104 outputs a load signal SL and a latch completion signal similar to those described above.
SC1 is output, and a series of audio displays shown in No. 5 of Table 1 are made from the speaker 56 in accordance with the same operation as described above. Note that the JK flip-flop circuit 106 is cleared by the latch completion signal SC1. When the abnormality cause voice push button 54 is pressed again, the count content of the address counter 108 becomes "2" according to the same operation as above, and No. 6 in Table 1 is reached.
A series of audio displays shown in . Thereafter, in the same way, each time the abnormality cause voice utterance push button 54 is pressed, the voice display of No. 7 to No. 10 in Table 1 is performed in sequence, and when the push button 54 is further operated, the voice display of No. 5 of Table 1 is displayed again. The audio display shown in is made. Therefore, the operator can investigate various causes of malfunctions without consulting the instruction manual. Note that the above operations of the push buttons 68 and 54 were performed when the voice stop changeover switch 70 was open, but when the changeover switch 70 was closed, the operations of the NAND circuits 78 and 82 were performed. As a result, the output signals PS1 to PS13 and the abnormality cause voice command signal SSP are not output. Therefore, in this case, the generation of the abnormality alarm audio signal is allowed, but the generation of the operation instruction audio signal is stopped, and the audio display indicating the content of the pattern selection operation and the cause of the problem with the sewing machine's sewing tension is not displayed. It is not done. Therefore, by operating the changeover switch 70, a skilled worker can be relieved from the trouble of unnecessary voice display. If any of the lock signal SDT1, bobbin thread consumption signal SDT2, or presser foot raising signal SDT3 is generated when the start stop push button 46 is pressed, the J-K flip-flop circuit 184
The operation signal SMC to be supplied to AND circuit 1
78. Therefore, the JK flip-flop circuit 184 is not brought into the set state and the motor start command signal SC2 is not outputted from the circuit 184. That is, the AND circuit 178 is a prohibition circuit that prohibits the start of the stitch forming operation when an abnormality detection signal is generated. Since one of the input signals to the exclusive OR circuit 180 is at the "H" level and the other is at the "L" level, the alarm command signal SCK is supplied from the OR circuit 180 to the alarm display control circuit 124. At this time, in the alarm display control circuit 124, for example, a lock signal is activated.
Assuming that SDT1 is occurring, the JK flip-flop circuit 126 is brought into a set state. Therefore, an output signal representing the set state of this circuit 126 is supplied to the multiplexer 100 and the timing logic circuit 104 as the port select signal SP2 via the OR circuit 140.
The address memory 142 is supplied. In the address memory 142, the start address signal SA3 and the end address signal SB3 corresponding to the lock signal SDT1 are output, and these signals SA3 and
SB3 is provided via multiplexer 100 to start address latch 144 and end address latch 146. Timing logic circuit 104
In J-, after the port select signal SP2 is supplied, the load signal SL is output after a certain period of time in the same manner as in the operation described above, and the latch completion signal SC1 is output after a certain period of time after the output of the load signal SL. K flip-flop circuit 152 is placed in the set state. Therefore, in this state, even if another port select signal SP1 or SP3 is supplied, the load signal SL and latch completion signal SC1 based on that signal SP1 or SP3 are output to the AND circuit 1.
62, it is not output. In other words, these JK flip-flop circuit 152 and AND circuit 162 complete the audible display of the alarm in priority to the audible display of the cause of the pattern or sewing tension problem. Thereafter, the audio display shown in No. 11 of Table 1 is performed based on the same operation as described above. Next, when the start/stop push button 46 is pressed while the bobbin thread consumption signal SDT2 is being generated, the alarm command signal SCK is sent to the alarm display circuit 124 from the motor drive control circuit 114 in accordance with the same operation as described above.
is supplied to In the alarm display circuit 124, J
After the -K flip-flop circuit 128 is brought into the set state, No. 1 in Table 1 follows the same operation as described above.
The audio display shown in 12 is made. If the start stop button 46 is pressed while the presser foot rise signal SDT3 is being generated, the J-K flip-flop circuit 130 is similarly set to the set state and the audio display shown in No. 13 of Table 1 is performed. will be done. Here, lock signal SDT1 and bobbin thread consumption signal
If SDT2 or presser foot rising signal SDT3 occur overlappingly, the alarm display control circuit 12
At step 4, only the JK flip-flop circuit 126 is set by the action of the AND circuits 132 and 134, and the audio display No. 11 in Table 1 is preferentially performed. Furthermore, when the bobbin thread consumption signal SDT2 and the presser foot rising signal SDT3 are generated at the same time, only the J-K flip-flop circuit 128 is set to the set state by the action of the AND circuit 134, and the No. 12 audio display is made. On the other hand, if the lock signal SDT1 or the bobbin thread consumption signal SDT2 is generated while the sewing machine motor 192 is running, the motor drive command logic circuit 114 outputs these signals SDT1 or SDT2 to the AND circuit 1.
82, is supplied to a JK flip-flop circuit 184 via a tristate buffer 188 and an AND circuit 190. As a result, JK flip-flop circuit 190 is cleared and sewing machine motor 192 is automatically stopped. As described above, if the start/stop push button 46 is operated when the sewing machine is in an abnormal state, an audio warning is issued and the sewing machine motor 192 is prevented from starting, so that the sewing machine can be operated in the abnormal state. can be prevented and countermeasures can be taken in advance. In addition, the audio warning is reliably issued without being interfered with by other pattern displays or sewing tension displays, and if such abnormal conditions occur at the same time, the important audio warning will be given priority. Since the information is displayed, appropriate measures can be taken quickly and reliably. If any audio display, for example the audio display shown in No. 1 in Table 1, is made and the worker misses the audio display content,
By operating the repeat push button 50, the audio display is performed again. That is, when the repeat push button 50 is operated, the "L" level output signal of the one shot multi circuit 198 is supplied to the JK flip-flop circuit 200 and the address counter 148 via the AND circuit 172. As a result, the start address signal SA for the audio display currently latched in the start address latch 144 is
1 is loaded into address counter 148. At the same time, the J-K flip-flop circuit 200 is set to the set state, and the clock pulse signal CP is output to the oscillator 2.
10 is supplied to the address counter 148 via the AND circuit 212. Therefore, the audio display shown in No. 1 of Table 1 will be performed again in accordance with the same operation as described above. In this way, even if the worker misses the audio display once, he or she can open the audio display again as needed and accurately confirm the displayed content. When any audio display begins to occur, for example, the audio display shown in No. 1 of Table 1,
A skilled worker may be familiar with the latter part of the display, ie, which type of presser foot to use. In such a case, it is sufficient to display the selected pattern by voice in order to confirm which pattern has been selected, and the voice stop button 52 is operated during the display. That is,
When the voice stop push button 52 is operated, the "L" level output signal of the one shot multi circuit 206 is sent to the JK flip-flop 2 via the AND circuit 208.
00. As a result, the circuit 200 is cleared and the clock pulse signal that was being supplied from the oscillator 210 to the address counter 148 is cleared.
CP is blocked in AND circuit 212. Therefore, the counting operation of the address counter 148 is stopped and the subsequent audio display is stopped. In this way, the voice display can be stopped according to the worker's needs, so the worker who has taken the training can be freed from the trouble of unnecessary voice display and can start sewing work earlier. Can be done. The above-mentioned embodiment is merely one embodiment of the present invention, and various modifications may be made to the present invention without departing from the spirit thereof. For example, in the circuit configuration shown in FIG.
The converter 218 forms a sound generation and synthesis circuit 222, and the sound data stored in the sound data memory 98 is
Speech is synthesized according to the PCM (Pulse Code Modulation) method, but other methods, such as memory storage capacity, can be significantly reduced.
There is no problem even if the speech is synthesized according to the PARCOR (Partial Auto Correlation) method. In such a case, the speech synthesis circuit 222 is an LSI HD38880 manufactured by Hitachi, Ltd. or an LSI manufactured by Texas Instruments.
It is known that TMCO280 can be used. In addition, in the circuit configuration of FIG. 4, the control circuit 9
0, 92, 124, logic circuits 104, 114, multiplexer 100, J-K flip-flop circuit 200, AND circuits 78, 82, 172, 20
8, 212, inverters 76, 88, and one-shot multi-circuits 198, 206 constitute a control circuit 224 for voice synthesis, and this control circuit 224 may be constituted by a so-called microcomputer. In such cases, the start address latch 144 and end address latch 146 are typically random access memory (RAM).
The audio data memory 98 is composed of a read-only memory (ROM). Furthermore, a pattern selection push button 68 and an abnormality cause utterance push button 5
4 and the number of detectors for detecting abnormal conditions of the sewing machine can be changed in various ways depending on the functions of the sewing machine, and similarly, the types of audio displays shown in Table 1 and their contents can also be changed in various ways. It can be added. Effects As detailed above, the sewing machine of the present invention capable of voice display stops or cancels the voice display as necessary based on the operator's operation, so that the voice display is unnecessary for experienced workers. To free a worker from troublesomeness based on this voice display without being performed.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the appearance of a sewing machine that is an embodiment of the present invention. 2 and 3 are perspective views showing essential parts of the sewing machine shown in FIG. 1. FIG. 4 is a block diagram showing the circuit configuration in the embodiment of FIG. 1. 5 to 9 are block diagrams showing in detail the pattern display control circuit, sewing tension display control circuit, alarm display control circuit, timing logic control circuit, and motor drive command logic circuit in the block diagram of FIG. 4, respectively. It is. 52: Voice stop push button (operation body), 56: Speaker, 70: Voice stop changeover switch (operation body), {9
8: Audio data memory (memory), 218: D/
A converter} (audio signal generator), {{78: NAND circuit, 82: NAND circuit} (logic circuit), 148:
Address counter (selection circuit), {200: J-K
Flip-flop circuit, 212: AND circuit}
(Logic circuit)} (Audio signal control device).

Claims (1)

[Scope of Claims] 1. An audio signal for operation instructions predetermined according to the contents of the operation that the worker should perform before sewing, which is required for sewing with the sewing machine, and an audio signal for operation instructions determined in advance according to the content of the operation to be performed by the operator before sewing, and according to the type of abnormal state of the sewing machine. The memory 98 includes a memory 98 having a plurality of storage locations each storing a predetermined abnormality warning audio signal, and selectively stores the plurality of types of audio signals in response to an operator's operation or a change in the operating state of the sewing machine. Possible audio signal generator 9
8,218, a speaker 56 provided on the machine casing of the sewing machine and activated in accordance with the audio signal generated from the audio signal generator 98, 218, and a manually operable speaker 56 provided on the machine casing of the sewing machine. a changeover switch 70; and a first audio signal control device that operates in response to the operating state of the changeover switch 70 to allow generation of the abnormality warning audio signal and stop generation of the operation instruction audio signal. 78, 82
and a manually operable operating body 52 provided on the machine frame of the sewing machine, which is activated in response to the operation of the operating body 52 to stop the generation of audio signals from the audio signal generators 98, 218. a second audio signal control device 148, 200, 212 capable of displaying audio.