JPH0768651B2 - Lifting equipment for spinning machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a spinning machine such as a ring spinning machine and a twisting machine, and in particular, a ring rail, a lappet angle and / or an anti-node ring for forming a cup in the spinning machine. The present invention relates to a lifting device that moves up and down.

[Prior Art] In the spinning machine as described above, for example, Japanese Patent Publication No.
As disclosed in Japanese Patent Publication No. 4, the ring rail is gradually lifted while repeating the vertical movement of the ring rail during spinning of the yarn to form a cup, and the lappet angle and antinode A separator feed mechanism that raises and lowers the rings is also used. Conventionally, these mechanisms are based on the rocking of a lever by a cam, and the lifting of the ring rail is positively performed by the displacement of the cam.
The descent was a passive method, depending on the weight of the ring rail.

[Problems to be Solved by the Invention] With such a passive lowering method, when the ascending / descending speed of the ring rail increases, the ring rail changes to the cam displacement curve at the time when the ring rail turns from rising to lowering. There was a problem that it could not follow, and the ring rail stopped for a short time, a so-called breathing phenomenon, and the formation of the cup was disturbed. In particular, when cotton dust or the like is accumulated on a movable part related to the ring rail during operation, the above-mentioned breathing phenomenon tends to be further promoted due to an increase in frictional resistance due to the accumulation.

Therefore, an object of the present invention is to provide a lifting device for a spinning machine, which can positively drive the motion of a ring rail or the like both in the ascending and descending directions and thereby eliminate the breathing phenomenon with a simple configuration. .

[Means for Solving the Problems] To this end, the present invention provides a lifting device for a spinning machine having a driven portion and a drive portion with a saver function for moving the driven portion to move up and down. A positive elevating mechanism for transmitting the motion of the driving section to the driven section is provided between the driven section and the driving section, and the positive elevating mechanism can be rotationally driven by the driving section. A rotary member operatively coupled to the drive unit; and a pair of cord-like members each connected to the rotary member at one end and operatively coupled to the driven unit at the other end; The one end of the cord-shaped member is configured such that, when the rotating member rotates, one of the pair of cord-shaped members always moves in a direction in which the driven portion is positively moved up or down. It is also characterized by being connected to a rotating member. Of.

[Operation] Since the drive part has a saver feed function, the driven parts such as the ring rail, the lappet angle, and the anti-node ring driven by this drive part repeat the elevating cycle, and the average height in each elevating cycle. The level gradually increases.

When the ring rail is raised, the drive unit causes the chain,
A sprocket around which the chain is wound, and a rotary member driven by a support shaft supporting the sprocket, that is, a pulley is rotated in a direction corresponding to the ascending. A pair of cord-like members operatively connected to the ring rail, that is, one end of the belt is fixed to the pulley, and when the pulley is rotated in the direction corresponding to the upward movement, the pulley causes one of the belts to move. The ring rail is raised by a predetermined amount via the same belt. At this time, the other belt is paid out from the pulley and does not prevent the ring rail from rising.

Next, when the driving unit drives the ring rail in the descending direction, the rotating member, that is, the pulley is rotated in the direction corresponding to the descending direction. At this time, the pulley pulls in the other belt fed out in the ascending process to immediately and positively lower the ring rail, and the ring rail is not temporarily stopped. In this way, when the ring rail descends by a predetermined amount and one lifting cycle is completed, the process moves to the lifting process of the lifting next lifting cycle.

[Embodiment] Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding portions.

FIG. 1 is a perspective view showing an embodiment of a lifting device according to the present invention. The lifting device is roughly divided into a gear train 1 in order from an upstream side in a driving force transmission direction,
The drive unit 2 and the positive elevating mechanism 3 are used to drive the driven unit 4 up and down by the positive elevating mechanism 3. Although the ring rail and the lappet angle are driven by this lifting device in the embodiment, the lifting device of the present invention can be used to drive either one of the ring rail and the lappet angle.
An anti-node ring, not shown, may be used alone or to drive with the ring rail and / or lappet angle.

In FIG. 1, a gear train 1 is connected to a front roller 5 by a gear 1a and receives rotation from the front roller 5 driven by a drive source (not shown).
The gear train 1 includes, in addition to the gear 1a, a gear 1b that sequentially meshes,
Rotation of the front roller 5 having 1c and 1d and a pulley 1e provided on an output shaft attached to the gear 1d and being rotated at an appropriate speed by the gear train 1 is performed by an endless belt wound around the pulley 1e. Alternatively, it is transmitted to the drive unit 2 via a rotation transmission member 6 such as a chain.

The drive unit 2 has a shaft 2b that supports a pulley 2a around which the rotation transmitting member 6 is wound, and gears 2c, 2d, and 2e are provided on the shaft 2b so as to be separated from each other in the axial direction. Further, the drive unit 2 has a shaft 2f which is arranged in parallel with the shaft 2b at a distance from the shaft 2b.
The gear 2g provided on the gear is connected to the gear 2c via the gear 2j and the gear 2h.
Is meshed with the gear 2d, and the gear 2i is meshed with the gear 2e. Further, the drive unit 2 is an electromagnetic clutch 7 of a known structure provided between the shaft 2f and the gears 2g, 2h and 2i,
Worm 1 having 8 and 9 and mounted on shaft 2f
0, a worm wheel 11 that meshes with the worm 10, and a support shaft 12 that supports the worm wheel 11,
A sprocket 13 forming a part of the positive lifting mechanism 3 is fixed to one end of the.

An encoder 14 is connected to the other end of the support shaft 12, and ON / OFF of the above-mentioned electromagnetic clutches 7, 8 and 9 is selectively controlled by a signal from the encoder 14, and the drive unit 2 will be described later. It is designed to give a saver sending function.

In addition to the sprocket 13 described above, the positive lift mechanism 3 includes a sprocket 16 provided on a support shaft 15 and both sprockets 1.
It has a chain 17 that meshes with three and sixteen teeth (not shown). Pulleys 18 as rotating members are fixed to both ends of the support shaft 15, and a pair of chains, belts or wire-like members (belts in the embodiment) 19a, 19b such as wires are attached to each of the pulleys 18. One end is fixed by a suitable means such as a bolt 20. In the preferred embodiment, as shown in FIG. 1A, one end of the upper belt 19a is attached to the pulley 18 from above the pulley 18, and one end of the lower belt 19b is attached to the pulley 18 from below the pulley 18. The amount of rotation of the pulley can be set large. The other end of each belt 19a, 19b is a bar 21 extending along the machine base.
It is connected to the ends of a and 21b by any suitable means.
The driven part 4, that is, the ring rail 22 is driven via a and 21b.

Incidentally, in the preferred embodiment, the belts 19a and 19b are divided into two, but one belt may be fixed to the pulley 18 in the middle, and in this case, this one belt is fixed to that. Since the functions are different from each other, it can be considered as "a pair of belts".

Further, the positive lifting mechanism 3 drives the sprocket 23 provided on the support shaft 15, the sprocket 25 provided on another support shaft 26, and both sprockets so as to drive not only the ring rail 22 but also the lappet angle (not shown). Chain wrapped around 23, 25
24, a pulley 27 supported by a support shaft 26, and a pair of belts 28a, 28b fixed to the pulley 27 at one end. The other ends of these belts 28a, 28b are connected to the lappet angle via bars 34a, 34b, respectively.

In the driven part 4, only one unit is shown in the drawing as a representative, but at a plurality of positions along the ring rail 22, one end is fixed to the upper bar 21a and the other end is passed through the pulley 29a and the ring rail 22 at the other end. A belt 30a attached to the lower bar 21b, a belt 30b fixed to the lower bar 21b at one end via a pulley 29b and attached to a bar 31 at the other end, and a lifting pillar 32 for connecting the bar 31 and the ring rail 22. Units consisting of and can be respectively arranged.

Since the lifting device according to the present invention has the above configuration, when the front roller 5 is driven and its rotation is transmitted to the drive unit 2 via the gear train 1 during the operation of the spinning machine, a signal from the encoder 14 is sent. First clutch based on
2g and 2i are off, clutch 2h is on, and belt 17 is
The ring rail 22 is driven at a relatively high speed (see T ₁ section in FIG. 2) through the worm 10, the worm wheel 11 and the sprocket 13 in the direction of arrow A (clockwise in the figure). Therefore, the pulley 18 is also rotated clockwise, and the lower belt 19b fixed to the pulley 18 and the bar 21b attached to the lower belt 19b are pulled to the left in the figure, and as a result, the lifting pillar 32 is pushed up via the belt 30b and the bar 31, and the ring rail 22 is positively driven upward. During this time, the upper belt 19a is fed to the right in the drawing, but the belt 30a is not loosened because the belt 30a is pulled upward by the rise of the ring rail 22.

Next, based on the signal from the encoder 14 again, the clutch 2h is turned off and the clutch 2i is turned on at an appropriate timing, and the ring rail 22 is further moved at a relatively low speed (see T ₂ section in FIG. ₂ ). Then, the signal from the encoder 14 then rises again at the relatively high speed described above (see FIG. 2).
T see _three sections). When the chain rail 22 is fed one chain in this way, the clutch 2g is turned on,
Since the clutches 2h and 2i are turned off, the chain 17 is driven in the reverse direction B (counterclockwise in the figure), and therefore the pulley 18 is also rotated counterclockwise.
The upper belt 19a fixed to the upper belt 19a and the bar 21a attached to the upper belt 19a are pulled to the left in the figure, and as a result, the ring rail 22 is positively pushed downward through the belt 30a ( (T ₄ section in Figure 2). During this time, the lower belt 19a is unrolled to the right in the figure, but the belt 30b is not loosened because the belt 30a is pulled downward by the lowering of the ring rail 22.

As mentioned above, when the ring rail ascending speed is made variable by switching the clutch, the ascending curve of the ring rail becomes close to the curve when the conventional heart cam is used.
The thread shape can be improved.

Since the clutch is turned on and off based on the signal from the encoder 14 so that the total number of revolutions when one chase is raised is slightly higher than the number of revolutions when it is lowered, as shown in FIG. , Ascending in each elevating cycle according to the formation of the cup, a lifting motion called aser feeding is performed.

Although only the lifting and lowering of the ring rail 22 has been described in detail, the pulley 27 for the lappet angle (not shown) is driven by the above-described driving of the chain 17 via the sprocket 23, the chain 24, and the sprocket 25. The belt 28a, 28b and the bar 34, which operate in substantially the same manner as the pulley 18 for the vehicle, are fixed to the pulley 27 by appropriate means such as bolts 33.
A lappet angle (not shown) can be moved up and down via a and 34b. Further, the raising and lowering of the anti-node ring can be performed in substantially the same manner.

The preferred embodiment of the present invention has been described above, but various modifications can be made.

FIG. 3 is a schematic view showing a modified embodiment, in which a servo motor 51 which can rotate in the forward and reverse directions based on a signal from an encoder (not shown) is used as a drive unit 2 '. The output shaft 52 of the servomotor 51 has a gear 53 that meshes with a gear 54 supported by a shaft 55. The worm 10 provided on the shaft 55 has a worm wheel 11 as in the embodiment of FIG.
After that, the ring rail is moved up and down as in the embodiment shown in FIG. In this embodiment also, since the servo motor 51 operates so that the total number of revolutions when the chase is raised is slightly higher than the number of revolutions when the chase is lowered, the ring rail is
According to the formation of the cup, the lifting motion gradually rises in each lifting cycle, and a lifting motion called aser feeding is performed.

[Effects of the Invention] As described above, according to the present invention, since the driving portion and the driven portion are connected via the positive lifting mechanism including the pulley and the pair of cord-shaped members, the pair of cords is connected. Either of the strip-shaped members participates in the positive ascent or descent of the driven part, and the simple configuration of the pair of string-shaped members enables not only the ascent but also the positive descent of the driven part.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a lifting device according to the present invention, and FIG. 1A is an enlarged perspective view showing a state where one end of a belt (string member) is attached to a pulley (rotating member), FIG. 2 is a view showing a lifting curve of the ring rail by the lifting device of FIG. 1, and FIG. 3 is a schematic perspective view showing a modified embodiment of the lifting device according to the present invention. 2, 2 '... Drive unit, 3 ... Positive lifting mechanism 4 ... Driven member, 18, 27 ... Pulley (rotating member) 19a, 19b, 28a, 28b ... Pair of belts (string member) 22 …… Ring rail (driven part)

Claims (1)

[Claims] 1. A lifting device for a spinning machine, comprising: a driven part; and a drive part having a saver function for moving the driven part to move up and down, between the driven part and the drive part. Is provided with a positive elevating mechanism for transmitting the motion of the drive section to the driven section, and the positive elevating mechanism is rotatably driven by the drive section and is operatively coupled to the drive section, and A pair of cord-like members each connected to the rotary member at one end and operatively coupled to the driven part at the other end, the one end of the pair of cord-like members being the rotary member; A spinning machine, wherein one of the pair of cord members is connected to the rotary member so that either one of the pair of cord members moves in a direction in which the driven portion is positively raised or lowered when rotating. Lifting device.