JPS6222908B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a yarn breakage monitoring device for spinning machines, twisting machines, winding machines, etc. (hereinafter referred to as spinning machines). Conventionally, as this type of yarn breakage monitoring device, a stationary or traveling type yarn breakage detection head that can send a signal depending on the presence or absence of yarn at each spindle is attached to a spinning machine, and the thread breakage detection head is used to detect thread breakage. The signal from the head is sent to the discrimination device attached to the end of the machine base for each spindle, and the discrimination signal from this discrimination device is sent to the processing device attached to the end of the machine base. A device that counts and stores the number of thread breaks for each spindle is known. However, in such conventional devices, each spinning machine is equipped with a dedicated processing device, so although the spinning machine has the advantage of being able to constantly process various signals related to thread breakage, this processing device has a large amount of processing power. Because it requires a microcomputer with high performance, it is quite expensive, and providing a processing device for each spinning machine in a group of spinning machines would make the overall equipment cost extremely high, making it difficult to adopt. It is also possible to install a large computer in the central control room and apply signals for each spindle sent from each spinning machine to the large computer, but such equipment requires an extremely expensive large computer. In addition, wiring costs are required to connect each spinning machine to a large computer.
Similar to the above case, there were problems that made it difficult to adopt. Therefore, the present invention solves the problems of the conventional device described above, and provides a thread breakage monitoring device for a group of spinning machines, etc., which can monitor thread breakage of each spinning machine by spindle, and can be implemented extremely inexpensively and reliably. In this system, each spinning machine in a group of spinning machines is equipped with a stationary or traveling type yarn breakage detection head that can send a signal depending on the presence or absence of yarn at each spindle. In a yarn breakage monitoring device for a group of spinning machines, etc., which is configured to transmit a signal from this thread breakage detection head to a discrimination device attached to the end of the frame for each spindle, At the end of the table, there is an alarm device that can notify the operator of the occurrence of thread breakage in all the weights based on the above discrimination signal, and a socket for a connector that can take out the discrimination signal of the discrimination device to the outside. and a plug that can be inserted into and removed from the socket of the connector, and when the plug is inserted into the socket of any of the spinning machines in the spinning machine group, the discrimination device of that spinning machine, etc. The present invention is characterized by comprising at least one portable control device that is capable of counting and storing the number of thread breaks for each spindle based on the discrimination signal. Next, embodiments of the present application will be described based on the drawings. In Figures 1 to 4, 1 is the frame of a spinning machine;
2 is a weight, 3 is a ring rail, and a ring 5 for guiding a traveler 4 for each weight 2 is attached to this ring rail 3. 6 is a separator bar attached to a support leg 7 fixed to the ring rail 3 or lifting rod top 30; 8 is a synthetic resin separator attached to this separator bar 6 with a mounting screw 29; 2 and on both outer sides of the weight 2 at both end positions. This separator 8 has a thick wall portion 8a in which the lower part, which does not perform the function of separating the threads, is larger than the other parts, and the middle part and the upper part, which perform the function of separating the threads, have approximately the same thickness as conventional separators. It is formed in a thin portion 8b having a thick dimension. A storage space 9 is formed within the thick portion 8a of the separator 8 and is open only to the back and bottom surfaces of the separator 8, in which a yarn breakage detection head and a memory circuit, which will be described later, can be stored therein. This storage space 9 consists of a lower storage space 9a and an upper storage space 9b that are continuous with each other, and the lower space 9a is at approximately the same height as the turning trajectory of the traveler 4 as shown in FIG. 2, and as shown in FIG. It is formed at a position on the line connecting the weights 2 to each other, that is, at a position closest to the turning trajectory of the traveler 4. Next, in the storage space 9 of the separator 8 corresponding to each weight 2 (in this embodiment, the separator 8 located on the left side of each weight 2 in FIG. A thread breakage detection head 10 capable of transmitting a corresponding signal and a storage circuit 11 capable of storing the signal from the thread breakage detection head 10 in response to an external data latch signal are respectively built-in. As a result, a thread breakage detection head 10 and a memory circuit 11 are attached to each spindle 2 of the spinning machine. This yarn breakage detection head 10 is an electromagnetic detector 1 that detects the presence or absence of yarn by using the electromagnetic induction effect caused by the traveling of the traveler 4 on the ring 5.
2 and an amplifier 13 for amplifying or amplifying and shaping the signal from this detector 12, and this detector 12 is fixedly housed in the lower housing space 9a with adhesive or the like, It is assembled together with the memory circuit 11 on the printed circuit board 14 and fixedly stored in the upper storage space 9b. As shown in FIGS. 2 and 4, the detector 12 includes a permanent magnet 12a, an iron core 12b whose one end is fixed to the permanent magnet 12a, and whose other end is bent toward the corresponding weight 2. A coil 12c wound around the middle part of the iron core 12b, the permanent magnet 12a,
It is composed of an iron core 12b and an iron plate 12d arranged on the side opposite to the corresponding weight 2 side of the coil 12c,
A magnetic field is formed in the orbit of the traveler 4 of the corresponding weight 2 by the permanent magnet 12a and the iron core 12b, and no magnetic field is formed in the orbit of the traveler 4 of the opposite weight 2 due to the action of the iron plate 12d. It's becoming like that. The memory circuit 11 includes an AND gate circuit 15 and a D-type flip-flop 16 (hereinafter also referred to as D-type FF 16), as shown in FIG.
a is connected to the amplifier 13, and the other input terminal 15b is connected to the data latch signal line 18 via the connector 17.
The output terminal 15c of the AND gate circuit 15 is connected to a preset terminal (hereinafter referred to as PS terminal) of the D-type FF 16. This D
The FF16 performs the operations shown in the truth table in Table 1.The PS terminal has other input terminals (hereinafter referred to as the D terminal) to which a high-level signal is applied, and a counter clock terminal (hereinafter referred to as the CK terminal). ), the output terminal (hereinafter referred to as the Q terminal) outputs a high level signal, and when a clock pulse signal is applied to the CK terminal when the PS terminal is at a low level, the D terminal The high or low level signal of is memorized and the Q terminal outputs that signal, and even if the D terminal changes thereafter, that state is maintained until the next clock pulse signal is applied to the CK terminal. . Therefore, the input of the AND gate circuit 15

[Table] If there is a signal from the thread breakage detection head 10 during the time when the data latch signal is applied to the force terminal 15b (if the thread is not broken), the Q of the D type FF 16
If the terminal is set to a high level and there is no signal from the thread breakage detection head 10 (if the thread is broken), the Q terminal is maintained at a low level, thereby detecting thread breakage on each weight 2 at that time. The state is the weight 2
is stored in the D-type FF 16 corresponding to . Power terminal 19 of the thread breakage detection head 10 and memory circuit 11
a and the ground terminal 19b are connected via the connector 17 to the power supply line 18a and the ground line 18b, respectively. Next, except for those corresponding to the weights 2 at both ends of each D-type FF16, the remaining ones are located on one side (on the left side in the drawing) of the D-type FF16 where the D terminals are adjacent, as shown in FIGS. 8 and 9. The Q terminal is connected to the D terminal of the other side through the connector 17 and the data line 18e, and all the D
The CK terminal of the FF16 is connected to a shift signal line 18d via a connector 17, thereby forming a shift register 20 as a whole. When a shift signal consisting of a clock pulse signal is applied to the shift signal line 18d, the shift register 20 changes the signal (high-level signal or low-level signal) stored in each D-type FF 16 to one level each time the shift signal is applied. D on the output side (right side in the drawing)
from the Q terminal of the D-type FF16 at the final output end (the rightmost end in the drawing) to each D-type FF1.
The signals stored in 6 are sequentially output every time a shift signal is input. The Q terminal of the D-type FF 16 at the final output end is connected to a discriminating device to be described later. The above power wire 18a, ground wire 18
b, data latch signal line 18c, shift signal line 1
8d and data line 18e are connected to one bus bar 18.
The bus bar 18 is disposed along the separator bar 6 in a space behind the separator bar 6, as shown in FIGS. 2, 3, and 6. The left side of this bus bar 18 is connected to a termination resistor 21 for impedance matching, as shown in FIG. The D terminal of the D-type FF 16 at the input side end (the leftmost end in the drawing) of the shift register 20 is connected to the terminating resistor 21 so that the D terminal is always at a low level, and the shift signal line Every time a shift signal is applied to FF 18d, the stored signals are reset to a low level signal starting from the leftmost D-type FF 16. Therefore, each D-type FF 16 can be cleared by applying a shift signal to the shift signal line 18d. Next, at the out-end end of the frame 1 of the spinning machine, a data latch signal is transmitted to each memory circuit 11 for a certain period of time t (for example, 0.03 seconds), and then a shift signal is transmitted for a certain period of time T (for example, 0.03 seconds). 1 second)
a scanning device 22 configured to repeat the scanning every other time;
A determining device 23 capable of determining the presence or absence of a storage signal transmitted from the Q terminal of the storage circuit 11 at the final output end in relation to the shift signal of the scanning device 22.
and a processing device 24 that performs processing such as an alarm based on the discrimination signal of the discrimination device 23. As shown in FIGS. 10 and 11, in the scanning device 22, when the machine operation switch 23a is turned on, a shift signal is first applied to the shift signal line 18d, and the D-type FF 16 of each memory circuit 11 is set to a low level. Then, after a predetermined time T has elapsed, the data latch signal C is transmitted to the data latch signal line 18c for a certain period of time t, so that each D-type FF 16 memorizes a signal corresponding to the presence or absence of thread at that time, and then the shift signal line 18d is The storage signal of each D-type FF16 is sequentially outputted from the Q terminal of the D-type FF16 at the final output terminal by transmitting a shift signal to the data latch signal line 18c, and then, after a predetermined time T has elapsed, the data latch signal C is transmitted again to the data latch signal line 18c. It is electrically configured to repeat the above scanning until the full tube switch 23b is turned on. The discriminating device 23 detects the D-type FF 16 at the final output terminal every time the shift signal is transmitted.
It is configured to distinguish between high and low levels of the memory signal output from the Q terminal of the spindle 2, and output a thread breakage signal as a discrimination signal only when the memory signal changes from high level to low level at the weight 2. Based on the presence or absence of a thread breakage signal output from the discrimination device 23, it is possible to determine whether or not there is a thread breakage at each weight 2. Next, the processing device 24 can notify the worker of the occurrence of thread breakage in any of the weights 2 based on the thread breakage signal from the discrimination device 23 by lighting a lamp, making a buzzer sound, etc. An alarm device 25 and a counter 26 capable of counting and displaying the total number of thread breakages for each two rows of weights or for each machine based on the thread breakage signal.
and a control device 27 capable of processing data regarding yarn breakage based on the yarn breakage signal from the discriminating device 23 and the shift signal from the scanning device 22. Considering its function, the above-mentioned alarm device 25 needs to be provided in the spinning machine at all times.
It is specially attached to the end of the machine. This alarm device 25 is designed to issue an alarm when thread breakage occurs in a preset number of weights 2. It is preferable that the above-mentioned counter 26 is always provided in the spinning machine for production control and machine management, and this counter 26 is also specially attached to the end of the machine frame.
The control device 27 uses a microcomputer to count the number of yarn breakages for each spindle 2, the total number of yarn breakages at the start of spinning, the number of yarn breakages for each doffing, and the duration of yarn breakage. It is configured to be able to perform various calculations of ~e○, such as calculation of the average value of , calculation of production loss caused by yarn breakage, etc., and storage and display of the results of these calculations. Considering its function, it is sufficient to temporarily provide this control device 27 in the spinning machine, and as shown in FIG. There is. Further, this control device 27 is connected to the discrimination device 23 via a connector 28. The control device 27 is attached to the machine base by placing the control device 27 on the mounting surface 1a of the machine base 1, but the control device 27 is mounted on a movable trolley. This may also be done by positioning the truck near the machine base 1. The purpose of the control device 27 is to investigate the state of yarn breakage related to the operating state of the spinning machine, various spinning conditions, etc., and it requires at least the calculations among the above calculations. ~
can be omitted, and it is also possible to perform calculations other than those described above by changing the program. Next, the operation of monitoring yarn breakage in a spinning machine using the yarn breakage monitoring device configured as described above will be described. Generally, a large number of spinning machines are installed and operated in each factory, and when monitoring thread breakage on spinning machines, it is important to monitor each spinning machine in the factory for thread breakage in order to perform production management and machine management. It is preferable. In this case, in the yarn breakage monitoring device of this embodiment, the processing device 24 is composed of an alarm device 25, a counter 26, and a control device 27, and the alarm device 25, which must be always provided in the spinning machine, A counter 26, which is preferably provided, is attached exclusively to the machine frame 1, and a control device 27, which is sufficient to be temporarily provided in the spinning machine, is configured to be portable.
Therefore, the spinning machines in the factory are divided into groups of many machines, and only one spinning machine in each group is equipped with the thread breakage monitoring device according to the embodiment of the present application. The spinning machine is equipped with the thread breakage monitoring device of the present embodiment with the control device 27 removed, and the time of the control device 27 of the present embodiment is shifted in order to monitor thread breakage in other spinning machines within the group. can be shared. Therefore, the control device 27, which is relatively expensive, is provided in only one of the many spinning machines in each group, and the alarm device 25 and counter 26, which can be prepared at a relatively low cost, are installed in the other many spinning machines. By simply providing the thread breakage monitoring device as a processing device, all spinning machines can be equipped with the thread breakage monitoring device according to the embodiment of the present application at different times, thereby significantly reducing the cost required for monitoring thread breakage in each spinning machine. be able to. When the control device 27 is used to process thread breakage data for another spinning machine, the plug 28a of the connector 28 is pulled out from the socket 28b and the control device 27 is placed on the mounting surface 1a of the desired machine frame 1. This can be done by subsequently inserting the plug 28a into the socket 28b of the machine 1. Next, turn on the machine operation switch 23a of the spinning machine.
When the spinning operation is started, each spindle 2 starts winding the thread onto the bobbin, and the thread rotates the traveler 4 on the ring 5. At the same time, the thread breakage monitoring device enters the thread breakage monitoring state, and the next Yarn breakage monitoring at each weight 2 is started as follows. First, if the thread at each weight 2 is not broken at each weight 2 position, this thread causes the traveler 4 on the ring 5 to rotate, and each time this traveler 4 rotates, the thread breaks within the magnetic field of the detector 12 of the thread breakage detection head 10. cross. As a result, an electromagnetic induction current is generated in the coil 12c of the detector 12 as shown in FIG. 14A, and a signal A based on this current is output from the detector 12. The signal A from the detector 12 is amplified and waveform-shaped by the amplifier 13 and converted into a pulse signal B as shown in FIG. 14A. Furthermore, if the thread at each weight 2 is cut at each weight 2 position, the rotation of the traveler 4 is stopped, so that the pulse signal is not output from the detector 12 and the amplifier 13 as shown in FIG. 14B. do not have. On the other hand, when the machine operation switch 23a is turned on, the scanning device 22 sends a shift signal to the shift signal line 18d as shown in FIG.
The FF 16 is reset to a low level to perform a clearing operation, and after a predetermined time T, the first data latch signal is transmitted to the data latch signal line 18c for a predetermined time t. By transmitting this data latch signal C, the AND gate circuit 15 of each memory circuit 11 determines that if the pulse signal (B) is input from the amplifier 13 while the data latch signal is being input, that is, the thread is not broken, as shown in FIG. Output thread signal d as shown in A,
This thread signal (d) is input to the PS terminal of the D-type FF16, and the Q terminal of the D-type FF16 is set and held at a high level, whereas the pulse signal (b) is not input from the amplifier 13 while the data latch signal is being input. In other words, when the thread is broken, the AND gate circuit 15 does not output the thread signal D as shown in FIG. 14B, and the Q terminal of the D-type FF 16 is held at a low level. Therefore, by transmitting the data latch signal C, the yarn breakage state at each weight 2 at the time of transmission is stored in the D-type FF 16 corresponding to each weight 2 as a low level state. Since the presence or absence of thread breakage in each of the weights 2 is detected in the storage space 9 formed in the separator 8, the thread breakage detection head 10 and memory circuit 11 are not affected by external forces associated with machine operation. It is less susceptible to damage and can also prevent functional deterioration due to the adhesion of fluff, making it possible to reliably detect yarn breakage over a long period of time. When the transmission of the data latch signal C is completed, the scanning device 22 transmits a shift signal H to the shift signal line 18d. By sending this shift signal, the shift signal is input all at once to the CK terminal of each D-type FF 16 that constitutes the shift register 20, and as a result, the stored signal of each D-type FF 16 is sent to the output side for each shift signal. Shifted by one. Therefore, from the Q terminal of the D-type FF16 at the final output terminal, first, when the input to the shift signal is 0 times, the storage signal at the weight 2 at the final output terminal is output, and when the input to the shift signal is 1 time. Then, the memory signal at the second weight 2 from the final output end side is output,
When the input to the shift signal is N-1 times, the memory signal at the Nth weight 2 from the final output end side is output,
These stored signals are input to the determining device 23, and the presence or absence of thread breakage at each weight 2 is determined. This discrimination device 23 outputs a discrimination signal, either a thread presence signal or a thread breakage signal, depending on the presence or absence of thread breakage every time the above-mentioned memory signal is input, and this discrimination signal is sent to the processing device 23.
is input to the alarm device 25 and counter 26.
This alarm device 25 receives a thread breakage signal from the discriminating device 23 a preset number of times (for example, once or twice).
(times) is input, a warning is issued by lighting a lamp or sounding a buzzer. Therefore, the worker only has to go to the position of the spindle 2 of the spinning machine in accordance with the alarm from the alarm device 25 and splice the yarn using the thread cutting weight 2.
Repair of broken threads can be done quickly and with less effort. The counter 26 counts and displays the number of thread breakage signals inputted from the determining device 23. The above operations are performed in all spinning machines regardless of the presence or absence of the control device 27. In addition, the control device 27
In the yarn breakage monitoring device for the spinning machine to which the spinning machine is attached, the discrimination signal from the discrimination device 23 is input to the control device 27. In this control device 27, the discrimination signals inputted sequentially for each weight 2 from the discrimination device 23 are stored for each weight. Transmission to the shift signal is stopped after this shift signal has been transmitted the same number of times as the number of weights 2, and thereby the reading of the memory signal stored in each D-type FF 16 is completed, and at the same time, the Q of each D-type FF 16 is transmitted. The pin is cleared to a low level. Then, after a predetermined time T has elapsed, the scanning device 2
2 transmits the second data latch signal C, repeats the detection of thread breakage at each weight 2 and reading of the detected signal, and thereafter the above operation is performed by the full tube switch 23.
This is repeated until b is turned ON. In this case, a signal indicating the number of data latch signals is also input to the control device 27, and by comparing it with a previously stored signal, it becomes possible to calculate the thread breakage duration, etc. After that, this full pipe switch 23b
When turned ON, the transmission of the data latch signal and shift signal is stopped, and doffing of a full bobbin is performed. At this point, counter 26
The total number of thread breakages for all spindles 2 is displayed, and the control device 27 stores data regarding thread breakages for each spindle 2 during one bobbin winding for each spindle, and calculates the number of thread breakages input in advance in the program. The results are displayed as needed or all the time. The results of these calculations are displayed using a display device, a printer, or the like. The calculation in the control device 27 can be performed by counting the thread breakage signals from the discrimination device 23 for each input order, and the calculation is performed by summing up the number of thread breaks at the time of starting the machine, that is, when transmitting the first data latch signal. The calculation can be performed by summing the number of thread breakages from the start of the machine until after a predetermined period of time has elapsed. This can be performed by averaging the time until the thread presence signal is input (which can be determined by the number of times the data latch signal is transmitted), and the calculation can be easily performed based on the total thread breakage duration time. After replacing the full bobbin, the machine operation switch 23a is turned on again to start winding the thread onto the next bobbin, but in this case, the counter 26 starts counting after being reset to zero. In the above embodiment, a stationary yarn breakage detection head and a memory circuit are attached to each spindle, and the memory signals of these memory circuits are transmitted to the discriminating device for each spindle using a shift register. However, as described in Japanese Patent Application Laid-open No. 55-40847, in the present application, a traveling thread breakage detection head is disposed so as to be movable along the row of weights, and the thread breakage detection head is The present invention can be similarly applied to a system in which signals are transmitted to the discriminating device for each weight. As described above, in the present invention, it is possible to notify the operator of the occurrence of thread breakage at all weights based on the discrimination signal of the discrimination device at the end of each spinning machine in a group of spinning machines. Since each spinning machine is equipped with a warning device, if yarn breakage occurs at any of the spindles during spinning operation, the operator can be immediately notified of the occurrence of the yarn breakage. It is possible to speed up the thread splicing work, increase productivity, and simplify the thread breakage monitoring work for workers. In addition, a socket for a connector is attached to the end of the machine frame of each spinning machine, etc., so that the discrimination signal of the discrimination device can be taken out to the outside, and a plug that can be freely inserted into and detached from the socket is provided, and the plug is inserted into the above precision. At least one unit that is capable of counting and storing the number of thread breakages for each spindle based on the discrimination signal of the discrimination device of the spinning machine, etc. when inserted into the socket of any spinning machine, etc. of the spinning machine group, etc. Since it is equipped with a portable control device, even the spinning machines etc.
The number of yarn breakages at each spindle during spinning operation can be monitored for each spindle, which has the effect of enabling machine management for each spindle. Furthermore, even if the number of thread breaks can be monitored for each spindle in each spinning machine as described above, the control device is configured to be shared by each spinning machine in a group of spinning machines, etc. Since the plug of the control device is inserted into the socket of each spinning machine, etc., it has the effect of significantly reducing the overall equipment cost even when there are a large number of spinning machines, etc. This has a great industrial effect, allowing the use of a spindle-specific thread breakage monitoring device in a wide range of practical applications.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a plan view of a spinning machine equipped with a thread breakage monitoring device, FIG. 2 is an enlarged sectional view taken along the line -- in FIG. - line sectional view, Fig. 4 is a - line sectional view of Fig. 3, Fig. 5 is a back view of the separator, Fig. 6 is a perspective view of the weight section, and Fig. 7 is a circuit explanatory diagram of the thread breakage detection head section. , Fig. 8 is an explanatory diagram of the shift register circuit, Fig. 9 is an explanatory diagram of the circuit of the thread breakage monitoring device, and Fig. 1 is an explanatory diagram of the circuit of the shift register.
Figure 0 is a circuit explanatory diagram of the processing device part, Figure 11 is a signal waveform diagram, Figure 12 is a perspective view of the processing equipment part at the end of the machine, Figure 13 is a usage diagram, and Figure 14 is a signal diagram. be. DESCRIPTION OF SYMBOLS 1... Machine base, 2... Weight, 10... Thread breakage detection head, 11... Discrimination device, 25... Alarm device, 2
7...control device, 28...connector.

Claims (1)

[Claims] 1. Each spinning machine in a group of spinning machines, etc. is equipped with a stationary or traveling type thread breakage detection head that can send a signal depending on the presence or absence of thread at each spindle, and the thread breakage detection head In a yarn breakage monitoring device for a group of spinning machines, etc., which is configured to be able to transmit a signal for each spindle to a discrimination device attached to the end of the machine frame, the above discrimination It is equipped with an alarm device that can notify the worker of the occurrence of thread breakage in all the weights based on the signal, and a connector socket that can take out the discrimination signal of the discrimination device to the outside. The socket of the connector has a plug that can be inserted into and removed from the socket, and when the plug is inserted into the socket of any of the spinning machines in the spinning machine group, based on the discrimination signal of the discrimination device of the spinning machine, etc. 1. A yarn breakage monitoring device for a group of spinning machines, etc., comprising at least one portable control device capable of counting and storing the number of yarn breakages for each spindle.