JPH0627663Y2 - Lapet reversing device for spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a lappet reversing device for a spinning machine such as a ring spinning machine and a ring twisting machine.

[Prior Art] In a spinning machine of this type, the yarn is guided by the snell wire of the lappet during the winding operation of the machine base, and the ballooning is performed in a stable state. In addition, when the lappet is placed at the same position as the winding operation during pipe replacement work due to full pipes, it hinders pipe replacement work, so a lappet reversing device that reverses the lappet to the retracted position during pipe replacement work is provided. Has been.

As a conventional lappet reversing device, for example, as shown in FIG. 4, a reversing lever 24 is fixed to a lappet angle 23 rotatably supported on an upper end of a lifting pillar 21 via a shaft 22, and a lappet angle 23 is provided. Reversing lever 2 when is placed at the doffing stop position (tube replacement work position)
4, the operating rod 25 is attached to the supporting member 26 at a position where the supporting member 26 can be engaged.
A device that can be moved while being held in a substantially horizontal state by the action of the turning lever 27 while being supported by
-229 publication. In this device, when the turning lever 27 is turned while the lappet angle 23 is arranged at the pipe replacement work position, the operating rod 25 is moved forward (to the right in FIG. 4) to move the lappet angle. Two
3 is rotated counterclockwise together with the reversing lever 24,
The lappet 28 is arranged in the retracted position.

As a lappet reversing device, as shown in FIG. 5, one end of the operating rod 2 is pin-connected to the rotating lever 27.
5, a long hole 25a is formed at the other end, and an operating rod 25 and a reversing lever 24 are inserted through a pin 29 fitted into the long hole 25a.
A device in which is connected is also disclosed in Japanese Utility Model Laid-Open No. 49-229.

[Problems to be Solved by the Invention] However, in the former lappet reversing device, the reversing lever 24 is moved along with the movement of the operating rod 25 during the lappet reversing operation.
Since the engagement position of the actuating rod 25 with respect to changes the distance from the center of rotation of the reversing lever 24 at the engagement position, the force necessary for reversing the lappet fluctuates, and in some cases a large force is generated. There is an inconvenience that it becomes necessary or the reversing speed of the lappet 28 temporarily increases. Further, since the engaging position of the operating rod 25 with respect to the reversing lever 24 moves, there is a problem that sliding friction occurs between the operating rod 25 and the reversing lever 24 and wear occurs. On the other hand, in the latter lappet reversing device, the force of the operating rod 25 always acts on the reversing lever 24 at a constant distance from the center of rotation of the reversing lever 24 via the pin 29 during the reversing operation of the lappet 28. However, since the operating rod 25 moves together with the reversing lever 24 as the lappet 28 moves up and down during the winding operation, friction between the pin 29 and the long hole 25a frequently occurs, and the friction portion concerned. There is a possibility that the smooth movement of the operating rod 25 may be hindered by the abrasion of the shaft, and this becomes more remarkable as the spinning machine base operates at a higher speed.

The present invention has been made in view of the above problems,
An object of the present invention is to provide a lappet reversing device for a spinning machine, which is disengaged from a reversing lever during a winding operation and which can smoothly perform a reversing operation of a lappet angle, that is, a lappet at a constant speed during a lappet reversing operation. Especially.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a reversing lever is provided on a lappet angle rotatably supported by a lifting pillar, and is orthogonal to the longitudinal direction of the lappet angle. A drive lever that is movably supported in the direction and reciprocated by the drive means is disposed at a position that can engage with the reversing lever when the lappet angle is disposed at the doffing stop position, and the drive lever is driven. The lever is provided with a guide portion for guiding the engagement position of the drive lever and the reversing lever so as to keep a substantially constant distance from the center of rotation of the lappet angle when the lever is moved. A guide member for guiding the lever is provided at a predetermined position.

[Operation] In the device of the present invention, the reversing lever that rotates the lappet together with the lappet angle to the winding operation position and the retracted position that does not support the pipe replacement work is provided with the lappet angle at the doffing stop position (tube When it is placed in the replacement work position), it can be engaged with the drive lever, and the reversing lever is moved up and down together with the lappet angle independently of the drive lever during the winding operation. When the lappet angle is arranged at a predetermined stop position when the machine stand for doffing (tube changing work) is stopped, the reversing lever and the drive lever are brought into an engageable state. When the drive lever is moved forward in this state, a force acts on the reversing lever from the engaging portion with the drive lever. The drive lever moves with the guide portion in contact with the guide member arranged at a predetermined position, and the engagement position of the drive lever with the reversing lever is substantially constant from the rotation center of the lappet angle due to the shape of the guide portion. Move while maintaining a distance.

[First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. A lappet angle 3 in which a lappet 2 provided with a snell wire 1 is fixed for each cone is rotatably supported by a lifting pillar (not shown) via a support shaft 4, and as shown by a solid line in FIG. 2 can be pivotally arranged in a horizontally extending position and a retracted position indicated by a chain line. A reversing lever 5 is fixed to an end of the lappet angle 3 so as to extend downward in a state orthogonal to the lappet angle 3, and an engaging groove 5 is provided at a lower portion of the reversing lever 5.
a is formed. On the other hand, a rotating shaft 6 is provided at the center of the machine base end portion at a position corresponding to the end portion of the lappet angle 3, and the rotating shaft 6 extends perpendicularly to the rotating shaft 6 and extends symmetrically with respect to the axis. A rotating lever 7 having parts 7a and 7b is fixed so as to be integrally rotatable. Further, a sprocket wheel 8 to which the rotation of the drive motor is transmitted via a chain (none of which is shown) is fitted and fixed to the rotating shaft 6. The rotating shaft 6, the rotating lever 7 and the sprocket wheel 8 constitute a driving means. Although the lappet reversing device is formed symmetrically, only one side (right side) will be described below.

A support shaft 9 is fixed to a position in the lower vicinity of the lappet angle 3 arranged at a doffing stop position (tube changing work position) so as to extend parallel to the lappet angle 3, and a guide member is provided at the tip of the support shaft 9. A guide roller 10 is rotatably supported. A base end of a drive lever 11 movably supported by the guide roller 10 in a direction orthogonal to the lappet angle 3 is rotatably connected to a tip end of an arm portion 7a of the rotary lever 7 via a pin 12. ing. An engagement pin 13 is provided at the tip of the drive lever 11 so as to project at a position facing the engagement groove 5a of the reversing lever 5 in a state where the drive lever 11 is arranged at the standby position shown by the solid line in FIG. There is. Below the drive lever 11, when the drive lever 11 reciprocates, a guide that guides the guide roller 10 in a state in which the distance between the support shaft 4 and the engagement pin 13 is constant is provided. A guide surface 14 as a part is formed.

Next, the operation of the device configured as described above will be described. During the winding operation, the lifting pillar moves up and down together with the ring rail, and the lappet angle 3 moves up and down above the position shown in FIG. That is, during the winding operation, the reversing lever 5 moves up and down while being completely separated from the drive lever 11. When the winding operation continues and the pipe is full, the winding operation of the machine base is stopped in a state where the lappet angle 3 is moved down to a predetermined height position for pipe replacement. At this time, the engagement pin 13 projecting from the tip of the drive lever 11 is arranged in the engagement groove 5a of the reversing lever 5 to be in the state shown by the solid line in FIG.

When the rotating lever 7 is rotated counterclockwise in FIG. 1 in this state, the drive lever 11 moves forward (to the right in FIG. 1) as the rotating lever 7 rotates. Drive lever 1
1, the engaging pin 13 comes into contact with the inner surface of the engaging groove 5a of the reversing lever 5 and causes the reversing lever 5 to rotate counterclockwise about the support shaft 4 via the engaging pin 13. Works. The guide surface 14 that abuts the guide roller 10 that supports the drive lever 11 is formed so that the engagement pin 13 moves with the forward movement of the drive lever 11 while keeping the distance from the support shaft 4 substantially constant. Therefore, the engagement pin 13 moves in a state of being engaged with the reversing lever 5 at a substantially constant position, and the lappet angle 3 is rotated counterclockwise together with the lappet 2 to form a chain line in FIG. It is placed in the retracted position shown. Thereafter, the pipe replacement work is performed, and when the rotation lever 7 is rotated clockwise after the pipe replacement work is completed, the drive lever 11 is driven in the opposite direction to the above, and the reversing lever 5 is engaged with the engagement pin 1.
It is rotated clockwise by the action of 3 and is arranged at the original position. Since the engagement pin 13 projecting from the drive lever 11 always moves with a substantially constant distance from the spindle 4, which is the center of rotation of the lappet angle 3, the position of the force point acting on the reversing lever 5 Becomes almost constant, and the reversing lever 5 is always rotated with a substantially constant force, and the rotation speed thereof is also substantially constant. Further, since the engagement position with the engagement pin 13 is constant when the reversing lever 5 is rotated, the abrasion due to the sliding friction does not occur.

Second Embodiment Next, a second embodiment will be described with reference to FIG.

In this embodiment, instead of forming the guide surface 14 on the lower portion of the drive lever 11, a guide groove 15 as a guide portion is formed on the drive lever 11 and the guide groove 1 is formed.
Drive lever 11 by means of a guide rod 16 fitted in 5
Is different from the above embodiment. The shape of the guide groove 15 is such that when the drive lever 11 moves, the engaging pin 1
It is formed in a shape such that the distance between the support shaft 3 and the support shaft 4 is constant.

In the case of the above embodiment, the drive lever 11 is the guide roller 1
Since it is supported while being simply placed on the upper surface of 0,
The guide surface 14 guides the guide roller 1 when vibration or the like occurs.
However, in the case of the device of this embodiment, the guide groove 15 is always held in the state of being engaged with the guide rod 16, and the movement of the drive lever 11 is carried out in a stable state to the machine base. Even if there is vibration, the lappet 2 can be smoothly inverted.

The present invention is not limited to the above-described embodiments, and for example, the driving means for driving the drive lever 11 may be configured such that one side is independently driven instead of the left and right common rotation lever 7. A cylinder or the like may be adopted as the driving means. Further, instead of providing the engaging groove in the reversing lever 5, the lower portion of the reversing lever 5 is formed to have a narrow width.
Two engaging pins 13 may be provided at a position where the reversing lever 5 is sandwiched when the lappet angle is arranged at the pipe replacement work position in FIG.

[Effects of the Invention] As described in detail above, according to the present invention, since the reversing lever provided on the lappet angle is moved up and down completely independently of the drive lever during the winding operation, the lappet angle is smooth. Is moved up and down. Further, since the force from the drive lever to the reversing lever always acts at a position at a substantially constant distance from the center of rotation of the reversing lever, the force required to operate the reversing lever has a substantially constant magnitude. The force of applying force is not applied and the reversing speed of the lappet becomes almost constant. Further, there is no slip between the drive lever and the reversing lever, and wear due to slip does not occur.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a first embodiment embodying the present invention,
FIG. 2 is a partially broken plan view of the main part, FIG. 3 is a side view of the main part of the second embodiment, and FIGS. 4 and 5 are side views of the conventional apparatus. The lappet 2, the lappet angle 3, the support shaft 4, the reversing lever 5, the engaging groove 5a, the rotating shaft 6 forming the driving means 6, the rotating lever 7, the sprocket wheel 8, the guide roller 10 as the guide member, and the drive. Lever 11, engagement pin 13,
The guide surface 14 as the guide portion, the guide groove 15,
A guide rod 16 as a guide member.

Claims (1)

[Scope of utility model registration request] 1. A reversing lever is provided on a lappet angle rotatably supported by a lifting pillar, movably supported in a direction orthogonal to the longitudinal direction of the lappet angle, and reciprocated by a drive means. Drive lever
When the lappet angle is arranged at the doffing stop position, the lappet angle is arranged at a position where it can be engaged with the reversing lever, and the driving lever and the reversing lever are engaged with each other when the driving lever moves. A lapet reversing device for a spinning machine, which is provided with a guide portion that guides the vehicle so as to move while keeping a substantially constant distance from the center of rotation, and a guide member that abuts the guide portion and guides the drive lever is provided at a predetermined position.