JPS60110929A - Operation of doffer in card - Google Patents

Abstract

PURPOSE:To drive a doffer efficiently, by using a motor controlled by an invertor as a motor to drive the doffer, observing rotation of a cylinder, starting the motor to drive the doffer. CONSTITUTION:The drive force of the motor M1 to drive a cylinder is transferred through the pulley 1, the belt 2, and the pulley 3 to the rotary shaft 5 of the cylinder 4, and through the pulley 6, the belt 7, and the pulley 8 to the taker- in roller 9. The drive force of the motor M2 to drive a doffer is transferred through the pulley 11, the belt 14, and the pulley 13 to the revolving shaft 12 of the doffer 10, and through the gear line 16 including the change gear 15 and the bevel gear 17 to the feed roller 18. A motor controlled by the invertor INV capable of changing set of frequency is used as the motor M2, only the doffer and the feed roller can be stopped independently from the cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method of operating a dock I in a card.

Prior Art Conventionally, in cards, the dock 7 and the cylinder are generally driven by one motor. The docker is rotated at high speed during normal operation, and the sliver mouth is rotated at low speed during work, so it is driven via a transmission. Conventionally, a two-stage transmission using a mechanical latch or a ring cone transmission capable of continuously variable speed has been used as a transmission for a dotsufa. However, when the former two-speed transmission is used, when changing the rotational speed of dock I from low to high speed, the shock of clutch engagement is large and the web or sliver becomes uneven and breaks, resulting in i'+' ? There were disadvantages such as being small and causing damage to the machine due to wear and tear. In addition, when the latter ring cone transmission is used, dock 1 is operated at high speed during normal operation, and only at low speed is the opening of the sliver (during work, etc.). Because it only lasts for a very short time, only a portion of the conical wheel of the transmission wears out quickly and needs to be repaired, but repairing this conical wheel wear is difficult unless done by each transmission manufacturer. There was a problem with maintenance management.In order to solve the problems of the conventional device mentioned above, the input shaft side and the output shaft side are not mechanically connected using an induction clutch to change between high speed and low speed. However, when an induction clutch is used, there is a problem that energy efficiency is poor due to heat loss due to slippage, especially during low-speed operation. In addition, in all of these conventional devices, the doffer and the cylinder, which is heavy and has large inertia, are operated as one unit, so if an abnormality occurs on the doffer side and it is desired to stop the doffer quickly, the cylinder and the doffer are operated in unison. I had to use the clutch to disconnect the connection.

Purpose This invention was made in order to solve the above-mentioned conventional problems, and its purpose is to make it possible to easily change the rotation speed of the dock 1, and to eliminate mechanical parts that wear out in the transmission mechanism. Dock 1 can be driven efficiently without any
Furthermore, it is an object of the present invention to provide a method for operating a doffer using a card that is capable of stopping and starting only the doffer independently of the cylinder.

Structure of the Invention In order to achieve the above-mentioned object, in this invention, a cylinder, a take-in roller, etc. are driven by one motor, and a dock 1. The feed roller etc. are driven by another motor, and the motor for driving the dock 1 is controlled by an inverter whose frequency can be changed.After checking the rotation of the cylinder, the motor for driving the dock 1 is used. Started the motor.

EXAMPLE An example embodying the present invention will be described below with reference to the drawings. As shown in FIG. 1, in the card embodying this invention, the driving force of a cylinder drive motor M1 that drives a cylinder, a take-in roller, etc. is applied to a cylinder 4 via a pulley 1, a belt 2, and a pulley 3. The transmission is transmitted to the rotating shaft 5, and a pulley 6 and a bell i~ are fixed to the rotating shaft 5.
7. It is transmitted to the taker-in roller 9 via the pulley 8. Further, the dock 1o is a dock 1. which is separate from the cylinder drive motor M1. Via a bell 1-14 wound between a pulley 11 mounted on the drive shaft of a doffer drive motor M2 that drives a feed roller etc. and a pulley 13 fitted on the rotating shaft 12 of the doffer 10. It is designed to be rotated. The rotation of the dock F10 is performed by a gear train 16 including a change gear 15 and a bevel gear 17.
It is transmitted to the feed roller 18 via the gear train 19, and is also transmitted to the stripping roller 20, the bottom plane roller 21, and the top plane roller 22 via the gear train 19. The rotation of the i~ hub plane roller 22 is transmitted to the calender roller 25 via the engine gear 1723 and the gear train 24, and is also transmitted to the coiler calender roller 28 via the change gear 26 and the gear train 27. It has become.

The doffer drive motor M2 includes a variable resistor VR1,
Inverter IN whose frequency settings can be changed via VH2
It is controlled by V.

The apparatus is then operated according to the diagram 17 shown in FIG. 2 by means of circuits shown in FIGS. 3(a) and 3(b).

Now, the push button switch PBI for starting the machine in the first circuit I
When is pressed, the cylinder drive motor electromagnetic contactor MSI is excited and self-held, the cylinder drive motor M1 is driven, and the cylinder 4 begins to rotate according to a predetermined starting gradient a shown in FIG. When the rotational speed of the cylinder 4 reaches a predetermined value, it is detected by the speed detection sensor S, the cylinder speed detection circuit in the fourth circuit 1v is activated, and the normally open contact CR81a in the second circuit H is closed. As a result, the timer TRI in the second circuit (■) starts counting, and the relay C in the third circuit (■) starts counting.
RI is energized, its normal IJI contact CR1a in the fourth circuit 1v is closed, and relay CR2 is energized and self-holding. Then, the normally open contact CR2a connected to the inverter INV shown in FIG.
Driven via R1. At this time, the docker 1o is started at a starting gradient such that the cylinder 4 reaches a predetermined low rotational speed in approximately the same time as the time for the rotational speed to increase from 8 to C in FIG. After the cylinder 4 reaches a predetermined rotational speed and the dock 110 also reaches a predetermined low rotational speed,
Timer TR1 in the second circuit
Its normally closed contact TR11) in circuit ■ opens, and relay C
When R1 is demagnetized, the normally closed contact CR1b in the fourth circuit 1v, which had been kept open until then, opens. After finishing the sliver rolling work, press the push button switch PB5 for high-speed start-up of the docker in the fifth circuit V, and
The dock 1 high-speed rotation relay CR3 located at is energized and self-held. This allows the inverter INV
The normally open contact CR3a connected to the starting gradient switching variable resistor v1 (2) is closed, and the normally closed contact C1 (3b is connected to the variable resistor VRI for setting the low speed rotation) is closed. The transfer motor M2 is driven via a high speed rotation setting variable resistor VR2.

As shown in FIG. 2, after the rotation speed of the docker 10 increases at a starting gradient C that is larger than the starting gradient C at the time of starting the low speed rotation, the rotation speed is maintained at a predetermined high speed rotation and normal operation is performed.

In the event of an abnormality such as double wrapping or sliver breakage, it is necessary to stop the docker 10 and the feed roller 18, but in this case it is not necessary to stop the rotation of the cylinder 4. In this way, the cylinder 4 and the dosing fan 1 are
0 and the rotation of the feed roller 18, press the push button switch PB4 for stopping the docker in the fourth circuit 1v in the above-mentioned normal operation state. If push button switch PB4 is not pressed, relay C or 2 is demagnetized, and the self-holding normally open contact CR2a, which had been kept open until then, is
and the normally open contact CR2a connected to the fifth circuit V and the low speed rotation setting variable resistor VR1 are opened. And the relay CR for high speed rotation in the fifth circuit V
3 is demagnetized and its normally open contact C at the inverter INV
When R3a is heard, the normally closed contact CR3b is turned off, and the power supply to the drive motor M2 of the switch F is stopped.
stops. After taking necessary measures, the fourth circuit I
When you press the pushbutton switch PB3 for starting the dotufa in V,
Relay CR2 is energized and self-held, and doffer drive motor M2 is driven at starting gradient C via variable resistor VRI for setting low speed rotation of inverter INV.
After reaching a predetermined low rotation speed, it is rotated at the low rotation speed. Then, in the same way as above, the mouth is connected to the fifth circuit V after the work is completed.
When the pushbutton switch PB5 for high-speed start of the dower 10 is pressed, the relay CR3 for high-speed rotation of the dolpher is energized, and the rotation speed of the dower 10 is increased to a predetermined high speed rotation at the starting gradient C in the same manner as described above, and normal operation is resumed. Migration zuru.

When the machine is stopped, pressing the machine stop push button switch P B2 in the first circuit ■ demagnetizes the cylinder drive motor electromagnetic contactor MSI, stops energizing the cylinder drive motor M1, and the cylinder 4 This results in inertia rotation. Due to the demagnetization of the cylinder drive motor electromagnetic contactor MS1, the normally open contact M in the fifth circuit V, which had been kept open until then,
S1a is heard, and the relay CR3 for high-speed rotation of the dock 1 is demagnetized. Then, the normally open contact CR3a connected to the inverter INV is heard, and the normally closed contact CR3b is closed, and the converter drive motor M2 is driven via the variable resistor VRI for setting the low speed rotation, 1
0, the rotational speed is shifted to low speed rotation at a braking gradient d, and after reaching a predetermined low rotational speed, the rotational speed is maintained at that speed.

When the speed detection sensor S detects that the cylinder 4 has reached the rotation speed immediately before stopping while the doff 110 is operating at a constant low speed, the cylinder speed detection circuit is activated and the fourth circuit IV is activated. That normally closed contact CR8
2b opens and relay CR2 is demagnetized.

Then, the normally open contact CR2a connected to the variable resistor VR1 for setting low speed rotation opens, and the motor M for driving the converter
The power to the doffer 2 is stopped, the doffer 10 comes to a natural stop, and the cylinder 4 stops almost at the same time after the doffer 10 stops.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, a normally closed contact that is opened and closed by the operation of a sliver break detection device or a double wrap detection device may be installed in place of the push button switch PB4 for stopping the dosing. Or, the drive of the doffer drive motor M2 is directly connected to the rotating shaft 1 of the doffer 10.
It is also possible to arbitrarily change the shape, structure, etc. of each part without departing from the spirit of the present invention, such as by configuring the transmission to be transmitted from the calender roller 28 side instead of the transmission to the rotary calender roller 28 side.

As described in detail above, according to this invention, doff? Since the rotation speed of the spindle can be easily changed, it is possible to easily adapt to changes in the spinning raw material or spinning conditions.Moreover, since there is no mechanical connection in the transmission mechanism that causes wear, maintenance is easy and energy efficient. get well. In addition, since doff 1 and the cylinder are driven by separate motors, only doff 1 and the feed roller can be stopped independently of the cylinder when cutting a sliver or detecting double wrap. There is no need to go to the trouble of disconnecting the cylinder and doss every time.

[Brief explanation of the drawing]

Fig. 1 is a plan view for embodying the present invention, Fig. 2 is a diagram showing temporal changes in the number of revolutions of the cylinder and doffer as the card is operated, and Figs. 3 (a) and (b) are It is an electrical circuit diagram. Cylinder 4, dotufa 101 cylinder drive motor M1
, Dotsufa drive motor M2, inverter INV, variable resistor for low speed rotation setting ■R1, variable resistor for high speed rotation setting VR2゜Patent applicant: Toyota Industries Corporation, Agent
Patent Attorney On 1) Hironobu

Claims (1)

[Claims] 1. A cylinder, take-in roller, etc. are driven by one motor, and a dosing roller, feed roller, etc. are driven by another motor.
It is characterized by using a motor that is controlled by an inverter whose frequency can be changed, and starting the doffer drive motor after confirming the rotation of the cylinder. How to drive Dotsufa on the card. 2. The rotation of the cylinder is confirmed by a rotation detector connected to the rotation shaft of the cylinder cylinder.
How to drive a dotsufa with one card listed in section. 3. When one unit is stopped, the cylinder drive motor is switched from high-speed operation to low-speed operation during inertial rotation due to the power supply to the cylinder drive motor being stopped, and the cylinder is stopped by the rotation detector during constant speed operation at low speed. It detects that the previous rotation has been reached, and in response to the detection signal, energization to the doffer drive motor is stopped, and the doffer 1 is moved into the cylinder and stopped first, and the cylinders are stopped at the same time. A method of operating a dotufa using the card described in Scope 2. 4.1) The inverter Q has a cushion circuit for starting up the dock 1 in synchronization with the rising of the cylinder,
2. The method of operating a doffer using a card according to claim 1, further comprising a cushion circuit for raising the doffer faster than the start-up when the doffer rotates at high speed.