JPS59137514A - Tandem card - Google Patents

Abstract

PURPOSE:A tandem card in which the first transmission system and the second one are mechanically connected through the first and second cylinders, thus enabling synchronous start and synchronous stop with a motor of small capacity in a short time. CONSTITUTION:The first cylinder 4 and the second cylinder 13 are connected through the pulleys 81 fixed on the shaft of each cylinder and the belt 83 so that the mechanical power is transmitted each other between both transmission systems. On the start of the frame, the first and second motors 24, 67 work together to accelerate various rotating parts rapidly and, after reaching the steady state, only the motor 24 is used to supply the power to all the transmission systems. On stopping, the difference in inertia moments in individual rotation parts are compensated with one another through these transmission systems to enable synchronous stopping.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive system for a so-called tandem card in which two cards are connected to form one card.

Since a tandem card has two carding mechanisms with large loads, the timing of starting and stopping the two carding mechanisms is very important. That is, when starting the tandem card, the carding mechanism on the raw cotton supply side (hereinafter referred to as 1-carding mechanism) needs to be activated at the same time as the sliver delivery side force-docking mechanism (hereinafter referred to as 2nd carding mechanism) or slightly later. There is.

If this starting timing is incorrect, the web fed from the first carding mechanism will become clogged in the second carding mechanism, making it impossible to achieve a good web delivery action. Cloth etc. may be damaged (f/A, etc.) and cause a major accident.

Furthermore, in order to stop the first carding mechanism and the second carding mechanism at the same time when the machine is stopped, difficult control must be performed to first stop the power supply to the second carding mechanism, which has a small load. .

Japanese Patent Publication No. 52-39459 discloses a tandem card in which two motors are used, the second motor drives the second cylinder, the second rotary flat, and the man-take-in roller of the second carding mechanism, and the first motor drives the Power is distributed to the transmission train to drive the other rollers including the first cylinder of the first carding mechanism, thereby distributing the load on each motor.

When starting the machine, first start the second motor to operate the second carding mechanism, then start the first motor after a predetermined time delay, and when stopping the machine, first start the second motor. After stopping and shifting the second carding mechanism to inert rotation, the first motor is stopped with a predetermined time delay and the first carding mechanism is shifted to inert rotation, and the F load is small, so the motor stops. A balance is created between the second carding mechanism, which continues to rotate by inertia for a long period of time, and the first carding mechanism, which stops in a relatively short period of time. However, in this conventional technology, the spinning conditions of the liquid table,
In other words, if the rotational speed of the cylinder, the amount of raw cotton supplied, the weight per unit area of the web, etc. change, the load on each carding mechanism will also change, and therefore the time delay when starting and stopping the motor will also be adjusted. There were inconveniences such as the need to do so.

In addition, one motor was used for the special public service 1986-43124%,
A method has been proposed for driving the first and second carding mechanisms synchronously via a transmission.

If the nuclear method is used, when accelerating at startup, both mechanisms are driven at low speed to reduce the load, and then the transmission gradually increases the rotation to reach a predetermined rotation speed. The carding mechanism is fully synchronously operated. However, in this case, it takes a long time for the machine to reach the normal spinning speed after the motor starts, and in particular, the tandem card is directly connected to a rear process such as a continuous spinning machine via a reserve box, and If the tandem card is used in a self-cutting spinning stem that starts or stops contrary to the instructions, the sliver in the reserve box will run out when starting up.

May cause amputation. Conversely, if the amount of sliver reserved is increased to prevent this, the reserve box must be made larger, and problems such as sliver entanglement within the box occur.

The present invention has been made in view of the drawbacks of the prior art, and mainly includes a first transmission train in which a first carding mechanism including a first cylinder is operated as the king, and a second carding mechanism including a second cylinder. It is an object of the present invention to provide a tandem card having an operating second transmission train, characterized in that the first and second transmission trains are mechanically connected via the second and second cylinders.

The present invention will be explained in more detail below based on embodiments shown in the drawings.

FIG. 181 shows a schematic diagram of the transmission train of the tandem card according to the present invention.

The tandem card has two motors, a first motor 24 and a second motor 671 ft, similar to known mechanisms. The first motor 24 has a pulley 25. the first cylinder 4 via the belt 26 and the pulley 27, and the pulley 27
1 belt 29 and pulley 30 to drive the first taker-in roller 3, and in conjunction with this, a continuously variable transmission 33 is operated via a boo IJ 31 on the shaft of the roller 3, belt 32, and pulley 28. At the same time, the transmission shaft 37 rotates through the pulley 28' on the shaft of the transmission 33 and the belt 34 together with the electromagnetic clutch 35 with the pulley 36 being excited.

As a result, the first gear train 38, which is three gears, is linked to the transmission shaft 37. Since the gear 41 rotates through the second gear train 39 and the gear 40, which are three gears, the first transfer gear 6 rotates, and the third gear, which is made up of three gears linked to the second gear 41 through the gear 42, rotates. Since the worm 45 rotates through a first bevel gear train 44 consisting of a row 43 and two bevel gears, the feed roller l rotates through a worm wheel 46 that meshes with the worm 45, and a gear that meshes with the gear 41. Sprocket 47 on the axis of 74. A pair of upper and lower crushing rollers 9 (only the upper one is shown) rotates via a chain 48 and a sprocket 49, and a pair of crushing rollers 9 (only the upper one is shown) rotates. A first delivery roller 8 is connected to the first crushing roller 9 via a transmission mechanism 52, and a gear train 53 is connected to the first crushing roller 9 through a transmission mechanism 52.
The first stripping rollers 7, which are connected to each other through the rollers, rotate respectively.

Further, the second motor 67 is connected to a pulley 68. the second cylinder 13 via the belt 69 and the pulley 70, and the pulley 71.
The second taker-in rollers 12 are rotated via belts 72 and pulleys 73, respectively.

Furthermore, although not shown, the rotational flats on the first cylinder 4 and the rotational flats on the second cylinder 13 are each driven by a transmission mechanism connected to a pulley 27, 70 on the axis of each cylinder 4, 13.

As mentioned above, the first motor 24 includes a first carding mechanism, a feed roller 1, a first dock 7a 6, a first dripping roller 7, a first transfer roller 8. First crushing roller9. While the web delivery roller group consisting of the transfer rollers 10. 57 is rotationally driven, the second carder 15 on the second carding mechanism side having a gear 58 meshing with the gear 57 rotates, and the prokerato on the shaft of the gear 75 meshing with the gear 58 rotates. 59,
A second clamping row 5118 of an upper and lower pair rotates via a chain 60 and a sub-locker 61, and a second delivery roller 17 is connected to this roller 18 via a transmission mechanism 62, and a gear train 63 is connected to this roller 17.
While the varnish dripping roller 6 is rotating, the fourth gear train 64 is made up of three gears ↓ linked to the gear 76 that meshes with the gear 58, and the fourth gear train 64 is made up of two bevel gears υ. , @5 bevel gear trains 65, 66 and a suitable transmission mechanism (not shown), the two sets of upper and lower draft rollers 59 and the left and right sets of calender rollers 2.0 are rotated, respectively.

As shown above, the transmission trains of the first motor 24 and the second motor 67 are provided separately and independently 41M, but the present invention is characterized in that these two transmission trains are all mechanically linked. That is, the first cylinder 4 and the second cylinder 13 are provided on the shafts of the pulley 80.8] and the belt 8.
3, and both transmission trains are configured to be able to mutually transmit power.

Next, the method of operating the tandem card of the present invention will be explained. At startup, the first motor 24 and the second motor 6
7 and is activated at the same time.

The two motors have different loads in their related transmission trains, and the first motor 24 has a higher load, but as described above, both motors are connected to each other via the pulleys 80, 81 on the shafts of the cylinders 4 and J3 and the belt 83. Since the two motors are connected together, the power of the second motor 67 is also transmitted to the transmission train on the first motor side, and both motors work together to accelerate the entire mechanism. Therefore, the first carding mechanism and the second carding mechanism are completely synchronized and quickly reach the predetermined rotation speed. After reaching the steady rotation speed, the power supply to the second motor 67 is stopped, and the machine continues to operate with the torque of the first motor 24 only, but the acceleration of heavy rotating bodies such as cylinders is no longer completed. Therefore, it is possible to maintain sufficient rotation with only one motor.

On the other hand, when the machine is stopped, the power supply to the first motor 24 is also stopped, but since the entire transmission train is interconnected via the pulleys 80, 83 and the belt 83, each rotating part is Due to the difference in inertia, they mutually accelerate or control each other while decelerating and stopping in a completely synchronized state.

The operator may switch the motor when starting up the machine while monitoring the condition of the machine, but it is more preferable to switch the motor automatically using the relay circuit shown in Figure 2. When switch PBJ is pressed, relay CRJ is energized and a contact (CR) in the motor control circuit is activated.
J) is closed and relay MSI is energized. In order to improve this, an a contact point (CRI) and an a
Even if the contact (MSI) closes and switch PI31 returns,
Relay MSI is self-maintaining. Therefore, the a contact (MSJ) in the first motor power supply circuit is maintained closed and the first motor starts rotating.

Meanwhile, at the same time, relay MS2 of the motor control circuit is also energized, which causes the a contact (Mg
2) is closed and the second motor also starts rotating. That is, when the switch PBJ is pressed, the first and second motors are activated simultaneously.

The time limit relay TR1 is energized together with the energization of the relay MS3, and the b contact (TRI) in the motor control circuit opens after a certain period of time, that is, a time sufficient for the tandem card to reach the normal (b) rotation number, and the relay Cut MSZ. Therefore, power supply to the second motor is stopped.

After that, only the first motor continues to rotate.

When stopping the machine, when the switch PB2 in the motor control circuit is pressed, the relay MSI is turned off and the a contact (MSJ
) opens, self-holding is released and power supply to the first motor is stopped.

As shown in Figure 1, the first and second transfers are both driven by the first motor 24 via the electromagnetic clutch 35.The clutch 35 is controlled as follows. When the switch FBI is pressed, the a contacts (Mg2) and (CRI) close as described above, so the relay CR3 is energized and is further self-held by its own a contact (CR3). This causes the a contact in the clutch supply V circuit (
CR3) is closed, the electromagnetic clutch 35 is activated, and the power from the first motor 24 is immediately transmitted to the driver. Relay C
Since R2 is self-held by its own a contact (CR2) even after relay MS2 is disconnected, power supply to relay CR3 continues through the a contact (CR2).

To stop the machine, when the relay MSI for the first motor is disconnected, its b contact (MSJ) closes and the time limit relay TR2 is energized, so after a certain period of time, its b contact (TR2'l opens and relay CR2 is disconnected). .

This opens contact a (CR2) and disconnects relay CR3. In other words, even if the power supply to the first motor is stopped, the machine base continues to rotate due to inertia, so in order to be able to stop the rotation of the converter in synchronization with other mechanisms, the electromagnetic Open the time relay to release the clutch.

In the present invention, the belt 83 further has a cut fc.
The first safety measure in case the transmission chain is interrupted due to
As shown in the figure, a detector 84 for belt monitoring is provided.

When an accident signal is emitted from the detector 84, a contact (LSI
) closes, relay CR4 in the circuit of FIG. 2 is energized, and the b contact (CR4) in the circuit of relay CR3 and the motor control circuit opens, cutting off relay CR3, MSI, and Mg2.

As a result, the power supply to the electromagnetic clutch 35 is stopped, and the power supply to the electromagnetic clutch 35 is stopped. The power transmission from the first motor to the L lowering mechanism is interrupted and the first and second motors are also stopped at the same time, so the mechanisms after both droppers immediately stop, and the i- and second cylinders also gradually come to a stop.

Since the cylinder has a large web storage capacity, there will be no problem even if it continues to rotate, and the spread of the accident will be prevented. Further, a switch PB3 is provided in the circuit of the relay CR3, and an operator can arbitrarily stop the dotting process by pressing the switch PB3.

In addition, in Fig. 2, the motor power supply circuit is equipped with an overload relay O.
LI and OL2 are inserted and their b contact is relay M
Since it is inserted into the SI circuit, if an abnormal load is applied to the motor for some reason, the motor will immediately stop. F1 in the figure. F2 indicates whoos.

As described in detail above, according to the present invention, the transmission trains of the first and second motors are mechanically connected, and when starting the machine, the first and second motors cooperate to quickly rotate each rotating part. After accelerating and reaching two-speed normal rotation, only the first motor is used to cover the entire transmission chain, so using the same small capacity motor as before, it is possible to start and stop in a short time and in a completely synchronized manner. Even in this case, the difference in inertia of each rotating part is mutually compensated for through the transmission train, and synchronous stopping becomes possible. Therefore, conventional problems such as the occurrence of incorrect sliver and sliver breakage due to thick webs are eliminated, and the labor and yield reduction required to correct the problems are alleviated. Furthermore, since the entire mechanism is accelerated by two motors at startup, the time required to reach the normal rotation speed can be shortened, and even in an automated spinning system connected to the rear process, it is possible to immediately respond to start/stop commands from the rear process. Therefore, there is no need to reserve excess sliver, which greatly contributes to reducing installation space and improving sliver quality.

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing the Rurigemukaid body transmission system according to the present invention, and FIG. 2 is a control circuit diagram of the transmission system shown in FIG. 24...First motor, 67...Second motor, 4...First Zolinda, 13...
Second Linda. 35... Electromagnetic clutch, 6... First clutch. 15...Second Dotsufa.

Claims (1)

[Scope of Claims] 1. A tandem card having a first transmission train that mainly operates a first carding mechanism including a driving cylinder, and a second transmission train that mainly operates a second carding mechanism that includes a second cylinder. A tandem card 2 characterized in that the first and second transmission lines are mechanically connected via the first and second cylinders, the first and second cylinders are connected by a belt-pulley mechanism, and the belt monitoring A tandem card according to claim 1, which is provided with a detection means for