JPS599014Y2 - Monitoring device for large frame winding machine for raw silk - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a monitoring device for a large frame winding machine for raw silk.

Conventionally, automatic reeling machines temporarily stop the yarn when there are knots in the yarn obtained from the cocoon, but this stopping time is artificially done and therefore varies, and one set is 240
Since there were 2 (example) to 200 x 2 (column) cords, the operating efficiency of each cord was 70 to 90%, which was a large difference.

Also, the thread length of the small frame should be reduced by 10%, for example, around 210 g.
As a result, weaving companies using this method had the inconvenience of having to spend a lot of time and effort due to the large number of threads falling during warping. Ta.

In addition, if an attempt is made to simultaneously wind a set of threads from multiple threads (generally 5 to 6 threads), i.e. all of the large threads, to a predetermined length, the worker must constantly go around and monitor the threads for breakage. When winding many large silk frames at the same time, it was extremely difficult to wind a foot-long thread onto all of them.

This invention automatically stops the rotation of the large frame when a fixed length of thread is wound around all N large frames, and at the same time generates an alarm intermittently, and when even one thread is cut or the yarn is not aligned properly. In this state, when winding is started for N-1 or less large frames and continues for more than a predetermined time, the rotation of the large frames is automatically stopped, and at the same time a continuous alarm is generated, This system solves the above-mentioned inconveniences of the conventional method by automatically stopping the rotation of the large frame when winding is restarted by mistake after searching for the thread, and at the same time generating an alarm intermittently. A rotation detector that generates an output pulse corresponding to the rotation of the large frame in a large frame winding machine for raw silk that winds yarn in a small frame while traversing each of a plurality of N large frames having the same circumferential length; a counter for counting the output pulses; a plurality of N yarn running detectors corresponding to each yarn wound around the plurality of large frames and outputting a yarn running signal when the yarn is running; and the yarn running signal A first circuit that outputs an uneven thread running occurrence signal when the number of threads decreases from N to N-1, and a first circuit that starts winding for a large frame of N-1 or less and continues for a predetermined time or more. a second circuit that outputs a bottom alignment thread running start signal when the thread is aligned, an intermittent signal generating circuit that outputs an intermittent signal in response to the set value arrival signal of the counter, and a second circuit that outputs a thread running start signal when the thread running signal and the intermittent signal are both input; a third circuit that outputs a malfunction signal at the time of malfunction, and a large frame rotation stop that stops the rotation of the large frame based on the uneven yarn running occurrence signal, the irregular yarn running start signal, the set value reaching signal, and the malfunction signal when the tube is full. The present invention is characterized by comprising a device, and an alarm that operates intermittently in response to the intermittent signal and continues to operate when the uneven yarn running occurs and the uneven yarn running starts.

Embodiments of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is a small frame of raw silk wound by an automatic reeling machine, 2 is a guide, and 3-1 to 3-5 are yarn running detectors that detect the running of yarn by using changes in capacitance, for example. , 4 is intertwining or traversing, and 5 is a total or large frame, in which a plurality of N are attached to the same shaft 6 and have the same circumference, and the shaft 6 receives power from the drive wheel 7 by friction transmission. 9 is a brake to which the driven wheel 8 to which the transmission is transmitted is fixed; 10
is an operating rod connected to this, and 11 is a solenoid that sucks the operating rod 10 upward.

The brake 9 moves upward when current flows through the solenoid 11, and as shown in the second figure, the slope of the inclined hole 12 contacts the driven wheel 8 and applies braking to it, and when the brake 9 moves further upward, the driven wheel 8 and separate it from the drive wheel 7.

Since the brake 9 is pulled toward the locking member 14 by the spring 13, even if the solenoid 11 is energized and de-energized, it remains on the hook 15, and therefore the brake 9 is pulled against the spring 13. Large frame 5 until it goes down
does not rotate.

As shown in the third figure, a permanent magnet 16, for example, is mounted at a suitable position on the driven wheel 8, and a pickup 17 is mounted on a fixed base facing the permanent magnet 16, and a non-contact rotation detector 18 is provided.

FIG. 4 shows a block diagram of an electric circuit according to an embodiment of the present invention.

In the figure, 3-1 to 3-5 are threads 19 wound around the large frame 5.
A yarn running detector is provided corresponding to the yarn running detector, and its output is applied to an AND gate 22 and an OR gate 23 via an amplifier 20 and a rectifier detection circuit 21, respectively.

24 is a Schmitt trigger circuit, 25 is a differential circuit, 26
is a monostable multivibrator MM, and the circuit including the aAND gate 22, Schmitt circuit 24, differentiation circuit 25, and monostable multivibrator 26 is the yarn running detector 3.
The number of thread running signals output from -1 to 3-5 is N, that is, 5.
When the number becomes N-1, that is, 4 or less, a first circuit is provided which outputs an uneven thread running occurrence signal.

27 is a Schmitt trigger circuit, 28. 30 is a differential circuit, 29 is a monostable multivibrator MM, and 31 is A
ND gate, 32 is an inverter circuit, AND gate 3
1 is connected to the differential circuit 30, the second input terminal is connected to the OR gate 23 via the Schmidt trigger circuit 27, and the third input terminal is connected to the inverter circuit 33.
, the AND via the rigger circuit 24
Connected to gate 22.

The above OR gate 23, Schmitt trigger circuit 27,
Differential circuits 28, 30, monostable multivibrator 29,
AND gate 31, inverter circuit 32. 33, the circuit including the Schmitt trigger circuit 24, the AND gate 22, and the monostable multivibrator 26 starts running when N-1 threads, that is, 4 or less threads, and this state remains for a predetermined time T2.
A second circuit is configured which outputs an irregular yarn running start signal when the above continues.

34 is a photocoupler made of a light emitting diode and an optical variable resistance element, 35 is a bidirectional thyristor connected in series to the solenoid 11 and inserted into the AC power supply circuit 36, 39 is a counter, and this is a Schmitts trigger circuit. 38
, is connected to the pickup coil 17 of the non-contact rotation detector 18 via an amplifier 37, and counts the electric pulses generated in response to the rotation of the large frame 5 to determine the number of rotations of the large frame 5, that is, the length of the yarn wound around the large frame 5. The target yarn length can be variably set using the thumbwheel switch 40.

41 is a fixed number counter for canting the output panores of the counter 39; 42 is a flip-flop; 43 is a square wave oscillator; 44 is an AND gate that is opened when the flip-flop 42 is activated to output an oscillation pulse from the square wave oscillator 43; Flipflop 42 and counter 3
Reset switch to reset 9 and 41, 46 is AN
In the D gate, the circuit including this is such that the reset switch 45 is not closed even though a fixed length of thread is wound around the main frame 5.
When restarting the main frame 5 by mistake, that is, when the yarn running signal and the intermittent signal output from the AND gate 44 are input, a third circuit is configured to output a malfunction signal when the pipe is full.

47 is a differential circuit, 48 is an alarm such as a lamp, 49
50 and 51 are transistors, 50 and 51 are inverters, and 52 is an AND gate that closes when the alarm 48 is in intermittent operation.

Next, its operation will be explained.

Now N pieces (5 pieces in this example) of threads 19 are tied to each small frame 1.
When traversing and hoisting on separate large frames 5 at the same time, the yarn travel detectors 3-1 to 3-5, which are installed close to the water leaking raw silk traveling through each guide 2, receive a yarn travel signal. An AC signal is output, each of which is amplified by an amplifier 20, and converted by a rectifier/detector circuit 21 into a DC signal with an O level when running and an O level when stopped.
2, and its output signal is sent to Schmidts｝Rigger circuit 2
4, the signal is shaped into a rectangular wave.

When five threads are continuously wound up, the output signal of the Schmitt trigger circuit 24 remains at level 1, but when one of them is cut and the number of threads is reduced to less than N, the AND gate 22 The output signal of converts from level 1 to level 0.

Along with this, the output signal of the Schmitt trigger circuit 24 also changes from 1 level to O level, so this fall point is detected using the differentiator circuit 25, and the monostable multivibrator MM26 is driven for T1 seconds by this output signal. (T
．． = around 2 seconds), photo coupler 3 with this output pulse
4, the bidirectional thyristor 35 is made conductive for T1 seconds, and the AC solenoid 11 intervening in the AC power supply circuit 36 is actuated, and the brake 9 separates the driven wheel 8 from the driving wheel 7, at the same time applying braking. to stop the winding.

When yarn running is started with N-1 uneven yarns and continues for T2 seconds or more, a signal indicating a level 1 uneven yarn condition obtained from the output of the AND gate 22 through the inverter 33 and the OR gate 23, The rise of the output of the monostable multivib break 29, which operates for T2 seconds after the start of yarn travel, by the signal indicating the start of thread travel at level 1 obtained through the trigger circuit 27 and the output signal of the Schmitt trigger circuit 27, T2 seconds after the start of yarn travel. The three human signals obtained by differentiating the part with the differentiating circuit 30 are input to the AND gate 31,
The output is inverted by the inverter 32 and the monostable multivibrator 26 is driven to obtain an irregular yarn running start signal, which makes the bidirectional thyristor 35 conductive for T1 seconds and stops the yarn winding as described above.

On the other hand, when the thread starts running, the AND gate 31 can be operated by two people if the thread is run irregularly or temporarily for less than T2 seconds (approximately 5 seconds) by the operator according to the instructions for setting etc. Therefore, there is no possibility of malfunction.

When this uneven thread starts running or when the uneven thread running state as described above occurs, a level 1 signal obtained via the Schmitt trigger circuit 24, inverter 50, and AND gate 52 is generated. Since the transistor 49 becomes conductive, the alarm 48 continues to operate.

Next, if the above-mentioned problems do not occur and all the large frames 5 are equally wound with a fixed length, the pulses output from the pick-up coil 17 of the rotation detector 18 are sequentially counted and input by the counters 39 and 41. When the number of pulses reaches the set target value, that is, the full tube state, the counter 41 outputs a carry signal.
2 turns on and opens AND gate 44.

Thus, the output pulse of the square wave oscillator OSC 43 is AN
Since the signal is input to the transistor 49 through the D gate 44 and is intermittently made conductive, the alarm 48 operates intermittently to notify that the tube is full.

At the same time, the carry signal from the counter 41 activates the monostable multivibrator MM26 for T1 seconds, and since the set value attainment signal is output from now on, the rotation of the large frame 5 is stopped and the thread winding operation is completed.

If the winding operation is mistakenly performed even further than when the tube is full, the reset switch 45 is not activated, so the output of the flip-flop 42 remains at 1, and an intermittent signal is output from the AND gate 44. At the same time, a signal indicating yarn running is output from the Schmitt trigger circuit 27, so the AND gate 46 outputs an output based on these two signals, and this output passes through the differentiation circuit 47 and the monostable multivibrator 26, and becomes a malfunction signal when the tube is full. The bidirectional thyristor 35 is activated and the thread winding operation is completed.

In this case as well, the alarm 48 operates intermittently due to the intermittent signal to indicate the full state.

In this way, according to the present invention, the yarn of the set equal length is automatically wound by traversing the yarn of the small frame to each of the plurality of N large frames of equal circumference attached to the same shaft. At the same time, when an uneven thread starts running or when uneven thread running occurs, it automatically stops the thread running, and at the same time continuously notifies the operator of this with an alarm. When the tube is full or if the winding operation is performed by mistake, the winding operation can be automatically stopped and an alarm can be used to notify the operator intermittently, making it easier to wind the yarn. This improves the efficiency of the weaving process, and also saves the weaver's time and effort during warping.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view of the mechanism of the monitoring device of the large frame winding machine for raw silk of the present invention, Fig. 2 is a perspective view of its brake section, and Fig. 3 is a side view of its rotation detector section. FIG. 4 is a block diagram of a circuit according to an embodiment of the present invention. 1...Small frame, 3-1 to 3-5...Yarn travel detector, 5...Large frame (17...Drive wheel, 8... ... Driven wheel, 9 ... Brake, 11 ... Solenoid, 18 ... Non-contact rotation detector, 19 ... Thread, 35・・・・・・
- Bidirectional thyristor, 43... Square wave oscillator, 48... Alarm device.

Claims (1)

[Scope of utility model registration request] In a large frame winding machine for raw silk that winds yarn in a small frame while traversing each of a plurality of N large frames having the same circumference and installed on the same shaft, an output pulse is generated corresponding to the rotation of the large frame. a counter that counts the output pulses thereof; and a plurality of N thread running detectors that output thread running signals when the threads run, corresponding to each thread wound around the plurality of large frames. , a first circuit that outputs an uneven yarn running occurrence signal when the yarn running signal becomes from N to N-1 or less, and a circuit that starts winding for a large frame of N-1 or less; a second circuit that outputs an irregular yarn running start signal when the signal continues for a predetermined time or more; an intermittent signal generating circuit that outputs an intermittent signal in response to a signal that the set value of the counter has been reached; and a second circuit that outputs an uneven yarn running start signal when A third circuit that outputs a malfunction signal when the tube is full when inputting the signal, the uneven yarn running occurrence signal, the irregular yarn running start signal, the set value reaching signal, and the malfunction signal when the tube is full, and the general outline of what happens. A large frame rotation stop device that stops the
A monitoring device for a large frame winding machine for raw silk, comprising an alarm that operates intermittently in response to the intermittent signal, and continues to operate when the uneven yarn running occurs and the uneven yarn starts running.