JPH0342053Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a drive device for a carding machine.

Conventional technology The inertial force of the load on the cylinder, etc. of a carding machine is extremely large, so in the drive device of a conventional carding machine, a special motor with a large starting torque is used as the drive motor to start the cylinder, etc. Alternatively, a mechanical or electrical clutch has been interposed in the transmission mechanism between the drive motor and the cylinder to perform the cushion start.

Problems that the invention aims to solve: Conventional devices that use a special motor as a drive motor require many days to obtain the special motor, resulting in a long delivery time.Moreover, the special motor is expensive and takes a long time to start. Since the current is large, large-capacity electrical equipment, wiring materials, factory electrical equipment, etc. are required, resulting in large-sized equipment and high costs. In addition, in conventional devices that use a mechanical clutch, the mechanical sliding part of the clutch wears out, so it takes time to replace worn parts, and maintenance and management require a lot of manpower. However, those using electric clutches had the problem of requiring a large capacity, resulting in high costs.

Means to solve the problems Therefore, in order to solve the above problems, the present invention
It is characterized in that a fluid coupling is interposed in the transmission mechanism between the cylinder and the drive motor, and the drive motor is constituted by a general-purpose motor.

Operation When the power to the drive motor is turned on, the drive shaft of the drive motor rotates, and the rotational force is transmitted to the cylinder via the fluid coupling. In that case, the fluid coupling absorbs the inertial force of the large load on the cylinder, and the starting torque applied to the drive shaft of the drive motor and the starting current of the drive motor become small.

Embodiment Figure 1 shows the drive system of a carding machine. 1 is a cylinder of the carding machine which is rotatably supported on a frame (not shown), 2 is a take-in roller, and these are the drive motor fixed to the frame. It is configured to be rotationally driven by a drive shaft 3a of No. 3 via a transmission mechanism 4. In the transmission mechanism 4, 5 is a fluid coupling, the input shaft 5a of which is integrally connected to the drive shaft 3a, and the output shaft 5b is integrally connected to a rotating shaft 6 rotatably supported by the frame. has been done. The fluid coupling 5 is, for example, an input shaft 5
A radial impeller fixed to a and a radial impeller fixed to the output shaft 5b are placed opposite each other, and the inner periphery of these impellers is used as an oil reservoir, and when the input impeller rotates, a pump action occurs. It is configured to send oil outward to an impeller on the output side, causing the impeller to rotate. 7 is a drive pulley fixed to the rotating shaft 6, 8 is an intermediate pulley rotatably supported on the frame, 9 is a pulley fixed to the rotating shaft 1a of the cylinder 1, and 10 is a take-in roller. A belt 11 is wound around these pulleys 7, 8, 9, and 10. 12 is Dotsuhua, 13
1 is a feed roller, and 14 is a wrapper roller, which are rotationally driven by another dosing motor (not shown). Reference numeral 15 denotes a detector for detecting the rotation speed of the cylinder 1, and in the drawing, a display plate 16 fixed to the rotating shaft 2a and a display plate 1
The pulser 17 is fixed to the frame so as to detect the display section 6 and transmit a pulse signal. FIG. 2 shows an electric circuit diagram of the drive system, in which 18 is a starting circuit for the drive motor 3, 19 is a tuning amplifier for synchronizing the rotations of the cylinder 1 and the dolpher 12, 20 is a power supply circuit for the drive motor 3, 21 is a safety circuit, and 22 is a tuning circuit for synchronizing the rotations of the cylinder 1 and the dolphin 12. In the starting circuit 18, PB1 is a starting switch, PB2 is a stop switch, MS is a magnetic switch, and the relay contact MS1 is connected to the power supply circuit 20. In the above safety circuit 21, RES is a rotation detection relay, and relay contact MS1
is closed and short-circuits between terminals P and ST of the tuned amplifier 19, the timer in the tuned amplifier 19 is activated, and when no pulse signal is input from the pulser 17 even after a predetermined period of time (for example, 10 seconds) has elapsed, or for a predetermined period of time after startup. After the elapse of time, the relay contact is configured to be energized when no pulse signal is input from the pulser 17 for a predetermined unit time (for example, 1 second).
RES1 is provided in series with the starting circuit 18.
The conditions for energizing the rotation detection relay RES can be set arbitrarily within a range that can determine that the rotation of the cylinder 1 is abnormal, and the judgment circuit can be set using a timer and an AND element included in the tuned amplifier 19. Since it can be configured, illustration is omitted.

For the above configuration, start switch PB
When 1 is turned ON, the magnetic switch MS is energized and self-holds, and the magnetic switch MS
Due to the excitation, the relay contact MS1 is closed, the drive motor 3 is energized, and the drive shaft 3a is rotationally driven. The rotation of the drive shaft 3a is transmitted to the rotation shaft 6 via the fluid coupling 5, and the rotation of the rotation shaft 6 is transmitted to the take-in roller 2 and the cylinder 1 via the belt 11 etc. Rotate 1. In the above case, since the rotation of the drive shaft 3a is transmitted to the cylinder 1 via the fluid coupling 5, even if the inertia of the load at the time of starting the cylinder is very large, the large inertia is transferred to the fluid coupling 5. It is absorbed between the input shaft 5a and the output shaft 5b, and as a result, the starting current of the starting motor 3 becomes small, and the starting current can be within the allowable range of a general-purpose motor. Next, if the cylinder 1 does not rotate for some reason during the startup, the roller shaft 2a of the taker-in roller 2 also does not rotate, so the pulser 17 does not transmit a pulse signal and the startup switch is activated.
Even after the predetermined time T has passed after turning on PB1, the above pulse signal is not emitted, so the rotation detection relay is activated.
RES is excited. By energizing the rotation detection relay RES, the relay contact RES1 is opened and the magnetic switch MS is de-energized.As a result, the relay contact MS1 is opened and the drive shaft 3a of the drive motor 3 is opened.
stop rotating. Also, if the rotation of cylinder 1 stops for some reason while the carding machine is running, the pulser 17 will stop emitting pulse signals, and if no pulse signal is input for a predetermined period of time, the rotation detection relay will be activated.
RES is excited and the drive motor 3 is activated in the same way as above.
Stop energizing. If the fluid coupling 5 continues to slip due to the stoppage of rotation of the cylinder 1,
As the oil temperature rises, oil gushes out from the safety valve and causes the drive shaft to spin, but the oil scatters around and requires a lot of effort for repair work. However, in this embodiment, as described above, even if the rotation of the cylinder 1 stops for some reason, the rotation of the drive motor 3 is immediately stopped, so that the above-mentioned oil scattering can be prevented. It is extremely easy to repair.

Note that in the above embodiment, the rotation detection relay RES is energized when the rotation of the cylinder 1 stops, but the rotation detection relay RES is energized when the rotation speed of the cylinder 1 falls below a predetermined value. Also good. Further, although the detector is configured to detect the rotation speed of the roller shaft 2a of the taker-in roller 2, it may also be configured to detect the rotation speed of the rotation shaft 1a of the cylinder 1.

The above embodiment is equipped with a detector that detects the number of rotations of the cylinder, and a safety circuit that turns off the power to the drive motor when the detection signal from the detector is abnormal. Even when the system is stopped or decelerated for some reason, it is possible to prevent oil from scattering in the fluid coupling, and there are advantages in that restarting can be performed immediately after the cause is removed, and maintenance and management can be facilitated.

Effects of the Invention As described above, in the present invention, since a fluid coupling is interposed in the transmission mechanism between the drive motor and the cylinder, the inertia force of the large load on the cylinder is absorbed by the fluid coupling when the cylinder starts rotating. The starting torque that is absorbed and acts on the drive shaft of the drive motor and the starting current of the drive motor can be reduced, and as a result, even if a general-purpose motor is used as the drive motor, it can withstand practical use, and the This has the effect of significantly reducing costs by downsizing electrical equipment, wiring materials, factory electrical equipment, etc.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is an explanatory diagram showing a drive system of a carding machine, and FIG. 2 is an electric circuit diagram. 1... Cylinder, 3... Drive motor, 3a...
...Drive shaft, 4...Transmission mechanism, 5...Fluid coupling.

Claims (1)

[Scope of utility model registration request] In a carding machine drive device that transmits the rotational force of a drive shaft of a drive motor to a cylinder via an appropriate transmission mechanism, a fluid coupling is interposed in the middle of the transmission mechanism to convert the drive motor into a general-purpose motor. A driving device for a carding machine characterized by comprising: