JPS6152245B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a control device for a carding machine used in a spinning process, and more specifically, when a carding web, sliver, etc. The present invention relates to a control device that enables low-speed and high-speed operation while only stopping the vehicle.

Conventional Example As is well known, the general configuration of a carding machine is shown in FIG. That is, the lap A is supplied between the dish plate 17 and the feed roller 1. Then, the garnet wire saw blade on the taker-in roller 2 scrapes off the nose of the date plate 17. The cotton tuft thus scraped off is received by the metallic wire on the cylinder 3, combed between the metallic wire of the cylinder 3 and the wire cloth 7a of the top flat 7, and woven into almost one fiber. The carded web on cylinder 3 is fed to calender roller 5 via paper 4. The calendar roller 5
By passing through the sliver B, the web becomes a sliver B. This sliver B is then stored in the can 6.

Incidentally, the feed roller 1, the take-in roller 2, the cylinder 3, and the printer 4 need to be connected to each other and rotated at predetermined rotational speeds. On the other hand, when the web or sliver is cut between the printer 4 and the can 6, it is necessary to stop only the printer 4 and perform low-speed rotation and high-speed rotation independently of the other rollers. In order to satisfy these conditions, a transmission mechanism as shown in FIG. 2 has conventionally been adopted.

That is, the rotation of the motor M is transmitted from the output pulley 9 of the motor to the transmission pulley 10 provided on one side (L side) of the cylinder 3 to drive the cylinder 3,
Power is transmitted from a transmission pulley 11 provided on the other side (R side) of the cylinder 3 to a transmission pulley 12 provided on the R side of the take-in roller, thereby rotating the take-in roller 2. And also the L of the take-in roller 2
Power is transmitted from a transmission pulley 13 provided on the side via a transmission 8 to a transmission gear 14 provided on the L side of the drawer 4.
5 to a transmission gear 16 provided on the R side of the feed roller 1.

Conventionally, various systems have been adopted as the above-mentioned transmission device. The commonly used transmissions are (1) two-speed transmission using a belt shifter, (2)
(3) Continuously variable transmission that uses a conical wheel and (3) Continuously variable transmission that uses a valve pitch sheave. However, each of these transmissions has various drawbacks. For example, according to the two-stage transmission device (1), when shifting the cloth from low speed to high speed, the web or sliver tends to have uneven speed and is easily cut. Furthermore, since the variable speed pulley has a complicated structure, there is a drawback that failures are likely to occur due to damage to the bearings, wear of the pulley, etc. According to the continuously variable transmission (2),
Since the speed change operation is performed via a pilot motor etc., it takes a very long time to stop from high speed operation. In addition, during normal operation, the ring is located at a high speed position relative to the cone, so only a portion of the cone, that is, the contact area at the high speed position where the ring operates, is subject to extreme wear, resulting in the problem that speed control accuracy cannot be maintained for a long period of time. . Furthermore, according to the continuously variable transmission (3), since the speed is changed by the tension of the belt, there is a problem that the belt is very easily damaged, and the rotation speed decreases due to wear of the belt. Therefore, there is a problem in that the control accuracy of the rotational speed, that is, the operating speed, is not good, similar to the continuously variable transmission device (2). Furthermore, in this device, the length of the belt tension adjustment rod is changed in order to adjust the rotation speed, which makes maintenance of the device very complicated.

In contrast to the above-mentioned general transmission, a continuously variable transmission using an induction clutch has also been provided (for example, Japanese Patent Publication No. 56-53009). According to this device, the dolphin is driven from the cylinder or take-in roller via the induction clutch, so the number of parts is very large, and the electrical components are also smaller than those of the devices (1 to 3) above. is also becoming more complex. Furthermore, since the rotation speed is adjusted by sliding the induction clutch, there is a slip loss, and the bearings of the clutch tend to become loose, which can lead to breakdowns.

As described above, in the conventional configuration in which a mechanical transmission mechanism is used to connect the first drive system that drives the cylinder and take-in roller 2 and the second drive system that drives the cutter 4 and feed roller 1, No matter which transmission device is adopted, various drawbacks of the transmission device itself cannot be avoided.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned conventional circumstances, and is capable of connecting a first drive system, such as a cylinder, and a second drive system, such as a dolphin, without using a mechanical transmission device having the problems described above. The present invention aims to provide a new control device that electrically connects the dowels and makes it possible to operate only the dosing shaft independently of the cylinders and the like when cutting webs or slivers.

Structure, operation, and effects of the present invention In order to achieve the above object, the present invention was configured as follows.

That is, the control device according to the present invention is composed of a first drive system that drives cylinders and the like with a first drive motor, and a second drive system that drives tools and the like with a second electric motor. The drive speed is electrically detected by a speed detector, and the second electric motor of the second drive system is electrically controlled by a controller using the detection signal as a reference signal. The controller includes a means for driving the second electric motor to follow the drive speed of the first drive system based on a detection signal from the speed detector at the time of starting, stopping, and normal operation, and a means for driving the second electric motor to follow the drive speed of the first drive system, and When cutting the sliver, a means for stopping only the second motor in response to a cutting signal from a cutting detector that detects the cutting, and a low-speed start switch to arbitrarily set the stopped second motor to a predetermined low speed rotation speed. and a means for increasing the temperature by time.

As described above, the present invention is based on the use of two electric motors: an electric motor for driving the first drive system and an electric motor for driving the second drive system.
Since the connection between the first drive system and the second drive system is electrically processed by the controller, there is no mechanical transmission device like the conventional one described above. The various problems that have arisen in the past are completely eliminated. According to the controller according to the present invention, since the electric control method is adopted, the drive speed control accuracy is always high, and there is no problem such as mechanical wear, so the high accuracy is maintained for a long period of time. It becomes possible to do so. As described above, the present invention can achieve the intended purpose.

Embodiments The present invention will be specifically described below with reference to embodiments shown in FIGS. 3 to 5.

FIG. 3 shows a diagram corresponding to the conventional example shown in FIG. 2. In the drawings, the same members as those in FIG. 2 are designated by the same reference numerals. This embodiment differs from the conventional example shown in FIG. 2 in the following points.

In this example, two electric motors IM
-1, IM-2 are adopted. One electric motor IM-1 corresponds to the motor M in FIG. 2, and is adapted to drive the first drive system such as the cylinder 3. The only electric motor IM
-2 is for driving the doctor 4 and the feed roller 1, and is designed to drive a transmission gear 14 provided on the L side of the doctor 4 via an output gear 22. As shown in the figure, the taker-in roller 2 and the cutter 4 are not mechanically connected, but are provided with a device for detecting the number of rotations of the taker-in roller 2, that is, a tacho generator TG. A detection signal indicating the number is input to a controller 31, and the control signal of the controller 31 is applied to the motor IM.
-2 is now entered.

An example of the controller 31 is shown in FIG.
This controller will be explained below.

The controller 31 is adapted to control the cylinder rotation speed and the cylinder rotation speed, as shown in FIG. For convenience of explanation, FIG. 5 will be explained first.

In FIG. 5, the horizontal axis shows time, and the vertical axis shows the number of rotations of the cylinder and the number of revolutions of the dower, respectively. Further, the solid line in the figure indicates the cylinder rotation speed, and the broken line indicates the cylinder rotation speed. During time period T ₁ , the push-button start switch S ₁ - ₁ (see Figure 4) is closed and cylinder 3 is activated.
The rotational speed of the cylinder 3 is increased to a normal high-speed rotation at a predetermined rising speed, and the printer 4 is made to follow the rotation of this cylinder 3 to increase the rotational speed to a normal high-speed rotation. Note that the normal high speed rotation speed of the cylinder is 250 to 350 rpm, and in this embodiment, 300 rpm is used. Dotsuhua's normal high speed rotation speed is 20~
30 rpm, and 20 rpm is used in this embodiment.
Time period _T2 indicates a state in which the cylinder 3 and the printer 4 are in normal high-speed operation. Time zone T ₃
shows a state in which the web sliver breakage detection switch _S3 is activated and the printer 4 is stopped after a predetermined fall time. At this time, the cylinder 3 maintains high speed rotation. Time zone T ₄ is dotsuhua 4
indicates that it is stopped. In time period _T5 , the low-speed pushbutton switch _S4 is activated to increase the speed of the converter 4, that is, the second electric motor IM-2, to a predetermined low speed rotation speed within a predetermined rise time. During the time period _T6 , the motor 4, that is, the second electric motor IM-2 rotates at a predetermined low speed, e.g.
It shows the state in which it rotates at 10 rpm, and the work to connect the web sliver is done during this low speed rotation. In time period _T7 , the high speed pushbutton switch _S5 is activated to increase the rotation speed to a predetermined high speed in a predetermined rise time. Time period _T8 indicates a state in which the printer 4 rotates at a predetermined high speed. For time zone T ₉ , push button stop switch S ₁
― ₂ to operate the first electric motor IM-1,
Therefore, a state is shown in which the cylinder 3 is stopped, and the second electric motor IM-2 and therefore the printer 4 are stopped in accordance with the detection signal from the tacho generator TG.

The controller 21 for controlling the cylinder 3, the dolphin 4, etc. as explained with reference to FIG.
The configuration will be explained below along with its function. still,
Figure 4 shows the carding machine when it is stopped.

(a) Normal startup (time period T ₁ →T ₂ ) (1) First, press the push-button startup switch S ₁ - ₁ to start the first electric motor IM-1.

(2) Normally open contact 52C of magnetic switch 52C
-1 and 52C-2 are respectively closed. When contact 52C-1 closes, the drive circuit
CI-1 is self-held, and even if the start switch _S1-1 returns and opens, the magnetic switch 52
C remains enslaved. One side contact 52C-
2 is closed, the first electric motor IM-
1 is driven. On the other hand, the normally open contact 52C-3 of the magnetic switch 52C is also closed, thereby energizing the relay coil 52CX. When this relay coil 52CX is excited, its normally closed contact 52CX-1 is opened, while its normally open contacts 52CX-2 and 52CX-3 are respectively closed. At this time, the low-speed pushbutton switch _S4 and the high-speed pushbutton switch _S5 are in the states shown in the figure, with the contact 5X-3 of the relay coil 5X, the time-limited operation contact T- ₁ of the timer T, and the normally closed state of the relay coil 6SZ. Contacts 6SZ-1 are each closed, so relay coil 6
HZ is excited.

(4) By energizing the relay coil 6HZ,
The normally closed contact 6HZ-1 is opened, while the normally open contact 6HZ-2 is closed. Therefore, the relay coil 6HZ is self-maintained even if the relay coil 52CX is demagnetized.

(5) By energizing the relay coil 6HZ,
The normally open contact 6HZ-3 is also closed, and its closing signal is applied to the frequency setting circuit 27 of the inverter 23.

The inverter 23 includes a forward conversion circuit 24 that converts AC voltage from an AC power source into DC, and an inverse conversion circuit that converts the DC converted by the forward conversion circuit 24 into AC having a frequency based on a signal from a frequency setting circuit 27. 25. The rotation of the second electric motor IM-2 is controlled based on the frequency of the alternating current output from the inverse conversion circuit 25. The frequency setting circuit 27 includes the tacho generator TG.
The output signal from the
Basically, the frequency in the frequency setting circuit 27 is set according to the signal from the tacho generator TG. i.e. octopus generator
The rotation speed detected by the take-in roller 2 by TG is O.
In this case, the frequency to be set is set to O, and the frequency to be set is increased in response to an increase in the number of rotations of the take-in roller 2. Furthermore, this frequency setting circuit 27, as described above,
The open/close signal from the normally open contact 6HZ-3 is input, and the normally open contact 6SZ- of the relay coil 6SZ is input.
3 open/close signals are also input. One contact point 6HZ-3 is a contact point for realizing high-speed rotation of the dolpher 4 as described above with reference to FIG. Therefore, contact 6
Frequency setting circuit 2 by closing signal from HZ-3
7 sets the frequency so as to increase the rotation speed of the dotshua to a predetermined high speed rotation, while contact 6
The closing signal of SZ-3 sets the frequency that achieves low-speed rotation of the dolphin.

On the other hand, a signal from an acceleration/deceleration time setting circuit 26 is applied to the inverse conversion circuit 25. This acceleration/deceleration time setting circuit 26 is a circuit for arbitrarily setting the time required for each rise or fall of the time periods T ₃ , T ₅ , and T ₇ explained in FIG.

As above, contact 6HZ-3 for high speed rotation
By inputting the closing signal to the frequency setting circuit 27, the second electric motor IM-2 increases the number of rotations of the taker in roller 2 to the normal high speed according to the number of rotations of the taker in roller 2, which rotates at high speed. Increase the rotation speed as if to force it.

(b) Normal stop (time period T ₉ ) (1) In this case, a push-button normally closed stop switch is used to stop the first electric motor IM-1.
S _1-2 is pressed. As a result, starting circuit CI-1
The magnetic switch 52C demagnetizes the contact 52
C-1 is activated and its self-holding is released.

(2) When the magnetic switch 52C is demagnetized, its normally open contact 52C-2 is opened, so that the first electric motor IM-1 and the cylinder 3 are stopped. However, in this case, the cylinder 3 rotates by inertia for about 3 minutes, for example. By demagnetizing the magnetic switch 52C, its contact 52C
-3 was also developed, so relay coil 52CX
is demagnetized. When the relay coil 52CX is demagnetized, its contact 52CX-1 is closed, and the 5
2CX-2 and 52CX-3 will be developed respectively. However, contact 6HZ of relay coil 6HN
-2 is closed and self-holding, this relay coil 6HZ remains energized and therefore its contact 6HZ-3 remains closed. Therefore, the second electric motor IM-2 for driving the dolphin 4 is the same as the first electric motor IM-2.
While 1 is at rest, it tries to rotate continuously. However, as the rotational speed of the cylinder 3 decreases, the rotational speed detected by the tachometer generator TG also decreases, so the frequency of the alternating current output from the inverter 23 also decreases, and accordingly the second electric The rotation of the motor IM-2 also decreases and stops when the taker-in roller 2 stops.

On the other hand, when the contact 52CX-1 is closed as the relay coil 52CX is demagnetized, the timer T is activated and the contact T-1 is opened. The setting time of this timer T is for the first and second motors IM-1 and IM.
-2 is set to a time longer than the time each of them stops, and when contact T- ₁ opens, the relay coil 6HZ is demagnetized, which causes its contact 6HZ-2 to open and its self-holding is released. This results in
The second electric motor IM-2 is the first electric motor IM-1
Stopping extremely quickly can be avoided. This is because cylinder 3 is significantly larger in size than cylinder 4 and its inertia is larger, so if the first and second electric motors IM-1 and IM-2 are turned off simultaneously, cylinder 4 will be significantly larger than cylinder 3. This results in a quick stop, which disrupts the rotational balance between the cylinder 3 and the cutter 4, resulting in problems such as cutting of the web sliver when the machine stops.

(c) A sudden stop due to web sliver cutting during high-speed operation (time period T ₃ → T ₄ ) (1) In this case, relay coils 52CX and 6
While HZ is energized, the web sliver cut detection device closes the mechanical contact PH of the detection switch _S3 , thereby energizing the relay coil 5X.

(2) When the relay coil 5X is energized, its normally open contact 5X-1 is closed, thereby self-holding the relay coil 5X. Also, its normally closed contact 5X
-2 and 5X-3 are respectively opened.

(3) When contact 5X-3 opens, relay coil 6
HZ is demagnetized, so the contact 6HZ-1 is closed, and the contacts 6HZ-2 and 6HZ-3 are opened, respectively.

(4) When the contact 6HZ-3 is opened, the set frequency of the frequency setting circuit 27 becomes O, and therefore the second electric motor IM-2 decelerates according to the fall set time of the acceleration/deceleration time setting circuit 26 of the inverter 23. and stop.

The magnetic switch 52C for driving the first electric motor IM-1 is self-held and energized by the contact 52C-1, so it continues to rotate. In other words, only the second electric motor IM-2 stops regardless of the first electric motor IM-1.

(d) Instant restart (time period T ₅ → T ₆ → T ₇ → T ₈ ) (1) In this case, the first electric motor IM-1 is in continuous operation, and the relay coil 5X is connected to its contact 5X.
It is self-maintained because -1 is closed. In this state, the low-speed pushbutton switch S ₄ is first pressed, and its normally closed contacts S _4-1 and S _4-2 are opened, while its normally open contact S _4-3 is closed. Therefore, the relay coil 5X is demagnetized, its contact 5X-1 is opened, and self-holding is released.

(3) When contact S _4-2 of low-speed pushbutton switch S ₄ opens, relay coil 6HZ is demagnetized. On the other hand, since contact S _4-3 is closed, relay coil 6SZ
will be excited. This relay coil 6
When SZ is excited, its contact 6SZ-1 opens, while its contact 6SZ-2 closes. Contact 6SZ-
2 is closed, the relay coil 6SZ is self-maintained.

(4) By energizing the relay coil 6SZ, its normally open contact 6SZ-3 is also closed, and a closing signal is thereby input to the frequency setting circuit 27 of the inverter 23. As mentioned above, this contact 6SZ-3
is a contact point for rotating the motor at low speed, and the inverter 23 is a contact point for rotating the second electric motor IM-
2 to the set low speed rotation speed.
Note that the web sliver connection action is performed during this low speed rotation.

(5) When the web sliver contact work is completed as described above, the high speed pushbutton switch _S5 is pressed.

(6) When the high-speed pushbutton switch _S5 is pressed, its contacts open, and therefore the relay coil 6
SZ is demagnetized and its self-holding contact 6SZ-2 is opened. When the relay coil 6SZ is demagnetized, the other contact 6SZ-1 is closed, while the low-speed contact 6SZ-3 is opened.

(7) On the other hand, relay coil 52CX remains energized, so its contact 52CX-2 is closed, and contacts 5X-3 and T- ₁ are also closed, so relay coil 6HZ remains energized. It is energized and self-held by its contact 6HZ-2. Therefore, the contact 6HZ-3 is closed and the second electric motor IM-2 increases to a high rotational speed, as in the case of the normal start-up described above.

(e) Cutting stop due to web sliver cutting during low speed rotation (1) In this case, relay coils 52CX and 6SZ are each energized as described in section (c). In this state, when the contact PH of the web sliver breakage detection switch _S3 is closed, the relay coil 5X is energized and its contact 5
Self-maintained by X-1.

(2) When the relay coil 5X is energized, the normally closed contact 5X-2 is opened, and therefore the relay coil 6SZ is demagnetized.

(3) When the relay coil 6SZ is demagnetized, its low speed contact 6SZ-3 is opened, and therefore, the second electric motor IM-2 operates according to the AC output from the inverter 23.
Stops according to the set time. In this case as well, since the magnetic switch 52C for driving the first electric motor IM-1 is energized and self-maintained, the rotation of the first electric motor IM-1 continues.

The configuration and combination of the drive mechanism and control device of the carding machine according to this embodiment have been described above. In the figure, _S2 is a card stop switch, which allows the operator to stop only the card 4 at any time. This is how it was done. In other words, when the switch _S2 is pressed, the relay coil 5X is energized, and its contact 5X-
Since both 2 and 5X-3 are open, the relay coil 6SZ or 6HZ is demagnetized, respectively, regardless of whether the second electric motor IM-2 is rotating at low speed or high speed, and therefore its contact 6HZ
-3 or 6SZ-3 are respectively opened, thereby stopping the second electric motor IM-2.

As explained above, according to the above embodiment, in addition to the first motor IM-1 that drives the cylinder 3 etc., the second electric motor IM-1 that drives the cylinder 4
-2, the first drive system such as the cylinder 3 and the second drive system such as the cylinder 4 are connected by a tacho generator TG and a controller 21, etc., and the controller 21 electrically controls the second motor IM-2. Since the transmission is controlled, there are no mechanical problems such as those seen in the conventional transmission described above, and the second transmission is controlled accurately.
The electric motor IM-2 can be automatically stopped when cutting the web sliver, and can be rotated at low speed or high speed at will when restarting, making it possible to control the carding machine with high precision. It is possible to achieve the intended purpose.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the general configuration of the carding machine, Figure 2 is a diagram showing the drive system of the carding machine shown in Figure 1,
3 to 5 show one embodiment of the present invention, FIG. 3 is a diagram corresponding to FIG. 2, FIG. 4 is a detailed electrical circuit diagram of the controller 21 in FIG. 3, and FIG. 5 is a diagram of the cylinder. and FIG. 6 is a diagram showing a state in which each rotation of the doffor is controlled. DESCRIPTION OF SYMBOLS 1...Feed roller, 2...Take-in roller, 3...Cylinder, 4...Double, 5...Calendar roller, 6...Can, 7...Top flat, 21...Controller, 23...Inverter,
24... Forward conversion circuit, 25... Inverse conversion circuit, 26
... Acceleration/deceleration time setting circuit, 27... Frequency setting circuit, IM-1... First electric motor, IM-2... Second electric motor, TG... Tacho generator (rotation speed detector), S ₃ ... Web sliver breakage detection switch, S ₄ ...low speed pushbutton switch, _S5 ...high speed pushbutton switch.

Claims (1)

[Claims] 1. A first motor that drives a cylinder or the like with a first electric motor.
It has a drive system and a second drive system that drives the door etc. with a second electric motor, the drive speed of the first drive system is electrically detected by a speed detector, and the second drive system uses the detection signal as a reference signal. The second electric motor of the system is electrically controlled by a controller, and the controller controls the second electric motor according to the detection signal from the speed detector at the time of starting, stopping, and normal operation. means for driving two electric motors to follow the drive speed of the first drive system; and means for stopping only the second motor in response to a cutting signal from a cutting detector that detects cutting when cutting the carded web or sliver; , means for raising the stopped second motor to a predetermined low speed rotation speed using a low speed start switch in an arbitrary set time; A carding machine control device comprising means for raising the carding machine at a set time.