JPH07111007B2 - Spinning machine lifting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a lifting device for raising and lowering a ring rail, a lappet angle and the like for forming a cup in a ring spinning machine and a twisting machine.

[Conventional technology and problems]

In a ring spinning machine, for example, as shown in Japanese Examined Patent Publication No. 43-29214, the ring rail is gradually raised while repeatedly moving up and down while spinning the yarn to form a cup, A mechanism that raises and lowers the lappet angle and anti-node ring is adopted. In the past, these mechanisms were based on the swinging of a lever by a cam, and the ring rail was positively moved by the displacement of the cam, but was lowered negatively by the weight of the rail. According to this method, when the ascending / descending speed of the ring rail increases, the ring rail cannot follow the displacement curve of the cam at the time of turning from rising to descending, causing a so-called breathing phenomenon of stopping for a short time, and The formation was often disturbed. In particular, when cotton dust and the like accumulated on the poker pillars of the ring rail during operation, this phenomenon tended to be further promoted due to the frictional resistance.

[Means and Actions for Solving Problems]

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a lifting device that can lift the ring rail or the like in both directions by positively driving the poker pillar, thereby eliminating the breathing phenomenon. It is a thing.

That is, the purpose is to use a screw shaft with a thread on a part of the outer periphery as a poker pillar that supports a ring rail etc. at the upper end by arranging a number of screw shafts vertically aligned in the longitudinal direction of the machine base, which is rotatable around the machine base. A shaft that extends horizontally in the longitudinal direction of the machine base, that is mounted coaxially with the nut body that is screwed onto the screw shaft and that is coaxially combined A driving means is provided, and the screw directions of the screw shafts arranged in parallel and the nut bodies screwed thereto are alternately reversed, and the driving means is configured to rotate the nut bodies alternately in the reverse direction. And a lifting device in a spinning machine such as a spinning machine.

Therefore, the vertical movement of the screw shaft is positively driven by the rotation of the nut body which is normally and reversely rotated by the driving means having the shaft, and the breathing phenomenon of the ring rail unlike the conventional cam system does not occur.

Further, since the ring rail is supported by the upper end of the screw shaft, that is, because the screw shaft does not project upward from the ring rail, the yarn splicing on the ring rail,
Normal operations such as doffing can be performed without any problems. In addition, due to the weight of the ring rail, etc., the thrust forces applied in the axial direction of the shaft of the drive means through the screw shafts and nut bodies are alternately opposite directions due to the screw shafts, so they cancel each other out within the shaft. It has the advantage of being stable.

Since a large number of screw shafts are used in a spinning machine, looking at the machine base as a whole, even if the screw shafts are rotated in the opposite direction alternately for every plurality, they can be rotated in the opposite direction for each one. Also, the same effect can be obtained.

Further, it is desirable that the vertical movement of the screw shaft is guided by a ball spline bearing for preventing rotation. As a result, partial contact due to twisting of the upper part of the screw shaft is prevented, and wear of the ring rail holding portion and loosening of screws are eliminated.

〔Example〕

The invention is explained in more detail on the basis of the exemplary embodiments shown in the drawings.

FIG. 2 is a side view showing the structure of a ring rail lifting poker pillar according to the first embodiment of the present invention. A bearing 3 is housed in a bearing housing 2 attached to a spindle rail 1 of a spinning machine, and a nut body 4 is rotatably supported by the bearing 3. The poker pillar consisting of the screw shaft 6 is screwed into the nut body 4 and is vertically movably held by the rotation of the nut body 4, and is stably moved up and down by a slide guide 9 provided on the spindle rail 1. obtain. A screw gear 5 is fixed to the nut body 4, and a drive shaft extending in the longitudinal direction of the machine base is installed.
It meshes with a threaded gear 11 provided on 10. A large number of units having such a configuration are arranged in parallel in the longitudinal direction of the machine base at regular intervals. In the case of a double-sided machine such as a ring spinning machine, this is symmetrically provided on both sides of the machine base.

A method of driving the poker pillar will be described with reference to FIG. The rotation transmitted from the front roller 20 via the gear trains 21 and 22 drives the shaft 23 in either forward or reverse directions via the clutches 24 and 25. That is, the clutches 24 and 25 periodically and alternately engage the shaft 23 in response to a command from the encoder 26, and give the shaft 23 rotation in a predetermined direction. The rotation of shaft 23 is
It is transmitted to the above-mentioned drive shaft 10 via the gear train 27, which raises and lowers the screw shaft 6 via the screw gears 11 and 5. For example, if the screw shaft 6 moves upward when the shaft 23 is normally rotated by the clutch 24, the screw shaft 6 moves downward when it is reversely rotated by the clutch 25. In this case, by making the number of revolutions during each ascending slightly higher than the number of revolutions during a descending, the ring rail 8 gradually rises in each ascending / descending cycle according to the formation of the cup, and the lifting motion is performed.
In the drawing, 12 is a screw shaft of a poker pillar that supports a lappet angle 15, and a bevel gear 13 fixed to a nut body 16 screwed to the lower end of the screw shaft and a bevel gear 14 attached to a drive shaft 10 are meshed with each other. As in the case of the screw shaft 6 described above, a lappet angle unit is formed that moves up and down and moves the lappet angle 15 up and down according to the formation of the cup. In this case, the screw leads of the screw shafts 6 and 12 (and the nut bodies 4 and 16), the screw gears 5 and 11, and the gear ratios of the bevel gears 13 and 14 need to be appropriately selected.
As a result, a single drive shaft can be moved up and down at a constant lifting ratio. Although not shown, when the anti-node ring needs to be raised and lowered, the same mechanism can be used. Of course, it is also possible to provide separate drive shafts for the ring rail and the antinode.

As is apparent from FIGS. 1 and 2, the nut body 4 to which rotation is transmitted from the drive shaft 10 causes relative movement with the screw shaft 6 that does not rotate, and the screw shaft is moved up and down. The ring rail could be supported at the tip. Therefore, since the screw shaft does not project upward from the ring rail, it does not interfere with normal operations such as yarn splicing and doffing on the ring rail, and the screw shaft cover from the viewpoint of safety is unnecessary. .

Further, since the rotating portion is a nut body which is a small component, the moment of inertia is small and the forward and reverse rotation control becomes smooth. And
This also applies to the lappet angle 15 and the like.

FIG. 3 shows a second embodiment of the present invention. In this example, the unit for the lappet angle is directly driven to the drive shaft 10 through the bevel gears 14 and 13 as in the above example, but the unit for the ring rail is integrated with the nut body 16 of the unit for the lappet angle. Fixed gears
The gear body 17 is driven by the nut body 16 by meshing with a gear 18 integrally fixed to the nut body 4 of the ring rail unit. There is no problem even if the driving order is reversed.

A downward force is constantly applied to the screw shaft 6 in the axial direction due to its own weight and the load of the ring rail 8, but this force is transmitted to the nut body 4 and becomes a force to rotate the nut body 4. The screw shaft 6 itself is converted and has a tendency to rotate in a certain direction as a reaction force. And
This rotational force increases the wear of the ring rail holding portion above the screw shaft 6 and causes loosening of the screw. In order to prevent this tendency, instead of the slide guide 9 (FIG. 2) provided on the spindle rail 1, a ball spline 30 is provided as shown in FIG.
By using the spline shaft 31 at the upper part of the shaft 6, rotation around the shaft 6 can be prevented. The cross section of the ball spline 30 and the spline shaft 31 is shown in FIG.
It is shown in FIG. In this embodiment, an example using a ball spline is shown, but any means may be used as long as it regulates the movement in the rotation direction and allows the slide in the axial direction.

As shown in FIG. 7, the screw shafts 6 (or 12) arranged in parallel in the longitudinal direction of the machine base have screw directions alternately opposite to each other. The thrust in the direction becomes the opposite direction for each unit, and this is prevented from being accumulated and becoming excessive, as in the case where the screw directions are all the same. Further, it is possible to prevent the ring rail and the lappet angle from being twisted in one direction.

〔The invention's effect〕

According to the present invention, since the ring rail and the like are both raised and lowered positively by the rotation of the drive shaft,
The operation is reliable, and the breathing phenomenon unlike the conventional cam type is eliminated even at high speed operation. Further, the cam-lever lifting system, which is balanced with the weight of the ring rail by means of springs or weights, can be eliminated. This simplifies the structure of the gearhead of the machine base and makes it possible to reduce the size.

Further, since the screw shaft as a poker pillar that supports a ring rail or the like at the upper end is moved up and down by rotating a small nut body, the forward and reverse control is smooth because the moment of inertia of the nut body is small. In addition, since the screw shaft does not project above the ring rail or the like, work on the ring rail is not hindered, and a screw shaft cover is not necessary from a safety point of view.

Further, since the drive shaft rotates the nut body alternately in the opposite direction when viewed as the entire machine base, thrusts applied in the axial direction of the drive shaft through the screw shafts and the nut body cancel each other out in the shaft and become stable.

[Brief description of drawings]

1 is a perspective view showing a drive system of a first embodiment of the present invention, FIG. 2 is a side view of a unit according to the first embodiment, and FIG. 3 is a view of a unit according to the second embodiment of the present invention. Front view, FIG. 4 is a partial side view of the unit of the present invention using a ball spline, FIGS. 5 and 6 are sectional views of the ball spline and the spline shaft, and FIG. 7 is a state in which the units of the present invention are arranged in parallel. It is a front view of an example showing the direction of the screw. 1 …… Spindle rail 2 …… Housing 3 …… Bearing 4 …… Nut body 5 …… Screw gear 6 …… Screw shaft 8 …… Ring rail 9 …… Slide guide 10 …… Drive shaft 11 …… Screw gear

Claims (2)

[Claims] 1. A poker pillar for supporting a ring rail or the like at the upper end by arranging a plurality of screw shafts, each of which has a screw thread on a part of its outer periphery, vertically aligned in the longitudinal direction of the machine base, which is rotatable around the machine base. A shaft that extends horizontally in the longitudinal direction of the machine base, that is mounted coaxially with the nut body that is screwed onto the screw shaft and that is coaxially combined A driving means is provided, and the screw directions of the screw shafts arranged in parallel and the nut bodies screwed thereto are alternately reversed, and the driving means is configured to rotate the nut bodies alternately in the reverse direction. A lifting device in a spinning machine such as a spinning machine. 2. The lifting device according to claim 1, wherein the ascending / descending movement of the screw shaft is guided by a spline bearing for preventing rotation.