JPS6061464A - Motion controller for roller base in string winder - Google Patents

Abstract

PURPOSE:To improve the moving efficiency by operating a fluid cylinder for lifting/lowering a roller base through an abrupt lowering circuit untill immediately before contact of friction roller against a bobbin while through a soft lowering circuit thereafter. CONSTITUTION:Upon depression of a lowering botton when the roller base is at the upper limit position, solenoid valves SV4, SV5 are turned on first to close the flow paths L2, L3 thus to cause counterflow in the flow path L1 in the direction 28 and to lower the cylinder 9 thereby the friction roller on the roller base quickly. Upon function of a dog 29 by means of a limit switch LS, said valve SV4 will turn off while delaying by setting time to close all flow paths L1-L3 thus to stop lowering of friction roller. Upon elapse of predetermined time furthermore, said vcalve SV9 will turn on the cause counterflow of fluid in the high pressure flow path L3, but a speed controller 20 will enable soft lowering of friction roller.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roller-based movement control device for a yarn winding machine, and particularly to a roller-based movement control device for a yarn winding machine. /In winding machines where the rollers move, friction rollers and traverse devices ζ
1. Regarding the fixed roller-based moving device in A. In the above-mentioned roller-based moving type winding type,
When replacing the bobbin, when the friction l-1 roller is lowered from above and comes into contact with the empty bobbin, if the type winds thread on multiple bobbins at the same time, the friction l-1 roller fixed to the roller base, traverse Weight of equipment, etc., FB:
(It weighs 100 to 200 kg when mixed together, and if such an object suddenly comes into contact with the bobbin, it may deform the bobbin holder or damage the winding machine.) Therefore, when moving the roller base, it is necessary to move it at an extremely low speed, but on the other hand, if it is too slow, time will be lost and it will not be effective at the production site. .

The present invention has been made in view of the above-mentioned problems.The roller base is driven up and down by a fluid/cylinder, and when the roller base is lowered, the rapid lowering circuit is followed until just before the friction roller touches the bobbin. The fluid cylinder is operated by a soft lowering circuit.

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows an example of a winding machine in which a friction roller and a traverse device move up and down. (1) is a friction roller and a traverse device (2).
It is also fixed to the roller base (3). The friction roller (1) may be connected to a drive source on the frame (4) side by a gear, but it is configured as an external rotor type electric motor. Therefore, a large load is placed on the roller base (3) by the electric motor and the cams in the rubber device. The friction roller (1) applies rotation to the bobbin (6) on the cradle (5), and the thread (1) is wound onto the bobbin (6) while being traversed by the traverse device (2).

As the thread is wound onto the bobbin (6), the bobbin/(6)
), the roller base (3) moves on the slide shaft (7) via the friction roller (1). The above roller base (3) and slide shaft (7)
) (7) and the thrust bearing (8) (8)
to make the movement of the low 2 base (3) smooth,
Moreover, the load of the roller base (3) is supported by the cylinder (9) and the piston (10). Note that the cylinder (9) is fixed to the roller base (3), and the piston (1) is fixed to the roller base (3).
One end of the roller base (0) is fixed on the frame (4), and the cylinder (9) and the roller base (
3) moves in unison.

The roller base (3) is movable between an upper limit position, that is, a position iv where the friction roller (1) and the bobbin (6) are separated, and a lower limit position, that is, a position where the friction roller (1) and the bobbin (6) are in contact, Descending is done by the roller base's own weight, rising is done by supplying compressed fluid to the fluid cylinder (9), and the friction roller (1) and bobbin (6)
) is set by the fluid supply pressure to the fluid cylinder (9) and the self-weight pressure difference of the roller base.

FIG. 2 shows an embodiment of the fluid circuit (11) for setting contact pressure. The flow path (Ll) is an acceleration flow path when threading the bobbin, and has a pressure reducing valve (12) and a solenoid valve (sv4), and the fluid pressure is set to Pl. The flow path (L3) is a so-called soft winding flow path for contact pressure during initial winding of the bobbin, that is, when winding the inner layer, and has a pressure reducing valve (14) and a solenoid valve (svg), and the fluid pressure is set to P3. The flow path (L2) has a pressure reducing valve (16) and a solenoid valve (sv5) for contact pressure during normal winding, and the fluid pressure is set to P2, and the above fluid pressures are PI < P2 < p
It is assumed that the relationship is a. Therefore, the contact pressure due to the valley flow path is proportional to the difference between the roller base's own weight W and the fluid pressure.If the contact pressure is Ql for Pl, Q2 for P2, and Q3 for P3, then Ql > Q2. > The relationship is Q3, and a large contact pressure is applied during acceleration during threading, and a small contact pressure is applied during inner layer winding to prevent vibration, resulting in soft winding.

Note that the flow path (L4) is a flow path for raising the roller base (3), and the fluid pressure greater than the weight of the roller base is applied to the cylinder (9).
) to raise the roller base integrated with the cylinder (9). In addition, (19) is a 7-year valve, (20) and (21) are speed controllers, (
22) (23) (24) are fluid pressure gauges, (25)
is a compressed fluid supply source, and (26) is a solenoid valve.

A method of controlling the movement of lowering the roller base using such a circuit will now be described.

Figure 2 shows the movement of the roller base by the friction roller (1
), replace the bobbin on the cradle (5) with the friction roller (IA) fixed at the upper limit position 4 with a stroke (not shown) and a pawl (7).Then, by pressing the lowering button, the friction roller (1) is AB
It rapidly descends between B and B, stops immediately before touching the bobbin, and then descends softly between B and B and makes a soft landing on the bobbin (6).

That is, in FIGS. 3 to 6, when the lowering button (27) is turned on, the electromagnetic valves (SV4) and (SV5) are turned on, the flow path (L2XL3) is closed, and the low pressure flow path ( A backflow occurs in the direction of arrow (28) in Ll), and the cylinder (9), that is, the friction roller (1) starts to descend (FIG. 6 (F-D)). When the roller base reaches a uniform position, it descends at a substantially constant speed, but because the difference between the roller base's own weight and the flow path internal pressure (Pl) is large, it descends at a slow rate of 1:.

71J Kunyong roller descends and the limit switch (L
When S) is engaged with the dog (29), the solenoid valve (SV4) is turned off after a set time delay, and all channels (Ll) are turned off.
(L2) (LS) is closed (g), and the descent of the friction roller (1) is stopped. At this time, the driftwood cylinder (9)
Friction roller break due to the action of Notanha.

It stops under the yong-yong condition, and the impact force is alleviated.

Furthermore, for a certain period of time, the solenoid valve (SV9) is turned on (F'
1, the fluid flows backward in the high pressure channel (LS), and the F lowering of the roller (1) is resumed. At this time, the supply pressure (P3) in the flow path is the supply pressure (Pl) in the flow path (Ll).
), the difference between the jJ-2 base's self-M, , : becomes smaller, and the descending speed of the roller becomes slower than the rapid descending speed, resulting in the so-called soft descending (S-v
) will be done. That is, the line (ir” −v in FIG. 6)
) The inclination angle of the line (S・■) is smaller than the inclination angle of the line (■), indicating that the descending speed is slower.

In this state, remove the friction roller (], > U, bobbin (
6) At the touch position (Q - 0), the friction roller stops descending. At this time, the descending speed is also slow, so the collision with the bobbin surface is alleviated, resulting in a contact similar to a so-called soft landing.

Next, the bobbin is threaded. In this case, the solenoid valve (svg) is off, the solenoid valve (sv4) is supplied with low pressure fluid in the direction of the upward arrow (30), and the thread is in contact pressure (Ql). The hooking operation is performed, and the bobbin is accelerated as described above.

Subsequently, after threading, the solenoid valve (S'V4) is turned off, the solenoid valve (svg) is turned on, the θ force and the contact pressure (93) for inner layer winding are set, and soft winding is performed.

Furthermore, after a certain period of time, the electromagnetic valve (SV9), (SVs
) is turned off (I), the flow path (L2) opens and the arrow (3
1) Fluid is supplied in the direction and normal winding is performed under contact pressure (Q2). Contact pressure (Q2) is Ql >Q2>
Being Q3 &J: +”+f11 Bo.

In addition, in the -1::nJ example, the high pressure solenoid valve (SV9) was turned on during a soft drop, but it is also possible to turn on the low pressure valve (SV4). At the moment when the flow path (Ll) is opened, the descending speed of the friction roller is relaxed in accordance with the hunting behavior of the fluid, and then the descending speed becomes 18 hours. If a limit switch (LS) is provided at a position where it is touched, it is also possible to perform a soft descent using the flow path (Ll). Also,
In some cases, it is also possible to open the flow valve (L2) that supplies a supply pressure (P2) higher than the supply pressure (Pl) during rapid descent to perform soft descent.

In the above embodiment, the type that moves the friction roller is explained, but the same applies to the type that moves the bobbin side, and the moving direction is not only up and down, but also left and right ((for the type that moves! is also applicable.

As described above, in the present invention, the roller base supporting the friction 3 is utilized as the slide shaft λ, so that it can freely slide in the direction opposite to the bobbin in contact with the bobbin, and the above sliding is carried out by the fluid cylinder. At the same time, we used a rapid movement circuit to reach the position just before the friction roller touches the bobbin, and a knot movement circuit from the above position to the point where the friction roller touches the bobbin surface.The fluid circuit is straddled so that extremely large loads can be carried out. When bringing the friction rotor, which has a
It is possible to efficiently move the roller from the farthest position to the contact position.

[Brief explanation of the drawing]

Figure 1 is a schematic front view showing an example of a spinning winder;
The figure is an explanatory diagram showing the positional relationship between the friction roller and the bobbin, Fig. 3 is a fluid circuit diagram that controls the movement of the friction roller, Fig. 4 is a timing chart showing the opening/closing timing of the electromagnetic valve, and Fig. 5 is a diagram showing the positional relationship between the friction roller and the bobbin. , a pressure diagram of the fluid supplied to the fluid cylinder, and FIG. 6 a velocity diagram showing the moving state of the friction roller.

Claims (1)

[Claims] The roller base that supports the Norikun = 370-ra is aligned with the slide/yant by 7L and is slidably supported in the directions of contacting and separating from the bobbin. A thread winding machine characterized in that a fluid circuit is provided so that the movement to a position just before the bobbin of the bobbin roller is touched is carried out by a rapid movement circuit, and the movement from the above position to the position immediately before the touch of the bobbin is carried out by a foot movement circuit. 3. Roller-based movement control device.