JPH052626Y2 - - Google Patents

Description

[Detailed explanation of the invention] Purpose of the invention (industrial field of application) This invention is designed to remove rappets from normal spinning, which can be a hindrance to the pipe changing work, when changing the pipe when the pipe is full in spinning machines, twisting machines, etc. This invention relates to a rappet reversing device for retracting from an extended position.

(Prior Art) A conventional rappet reversing device of this type as shown in FIG. 8 is disclosed in Japanese Utility Model Application Publication No. 58-22980. This conventional device has a rotation shaft 1 provided at the center of the machine base on the gear end side of the machine base.
Arm portions 2a, 2 that are perpendicular to the axis and extend symmetrically with respect to the axis.
A rotary lever 2 having a rotary lever 2 is fixed so as to be integrally rotatable. Each arm 2a, 2b is attached to the other end of a rod 5, one end of which is connected by a pin to a reversing lever 4 projecting from the lower surface of a rappet angle 3 extending along both left and right sides of the machine base. , are connected via pins 6a and 6b loosely fitted into a long hole 5a formed in the rod 5. The rappet angle 3, in which a rappet 8 equipped with a Snell wire 7 is fixed to each spindle, is fixed to a bracket 10 fixed to the upper end of a lifting pillar 9 that moves up and down during the winding operation. It is rotatably supported via a mounting portion 3a and a support shaft 11 protruding from the lower surface. By rotating the rotating lever 2 clockwise from the normal spinning state shown by the solid line in Figure 8, the rappet 8 does not interfere with the pipe yarn during doffing, as shown by the chain line in the same figure. It is designed to be rotated to the retracted position.

(Problems to be Solved by the Invention) However, in the conventional device, the rod 5 connecting the reversing lever 4 and the rotating lever 2 moves integrally with the vertical movement of the rappet during the winding operation. Friction between the pins 6a, 6b and the elongated hole 5a frequently occurs, and the smooth movement of the rod 5 may be hindered due to wear of the frictional portions. This problem becomes more noticeable as spinning machines are operated at higher speeds.

Also, the rotating lever 2 and the reversing lever 4 are connected to the rod 5.
Because the lever 2 is mechanically connected to the lever 2, the length of the elongated hole 5a will be reduced even if the operator tries to manually reverse the rappet in an emergency, for example, if the rotary lever 2 becomes unable to rotate due to mechanical trouble. Since the reversing lever 4 can only be rotated a little, there is a disadvantage that the rappet cannot be reversed to a position that does not interfere with doffing. In addition, the rotating lever 2 is generally configured to be able to be driven only when changing tubes due to a stop at full tubes, and not to be driven when the machine operation is stopped on the way to full tubes. A similar inconvenience occurs when a person wants to doffing on the way out.

On the other hand, in order to eliminate the problems caused by the wear caused by the mechanical connection between the reversing lever 4 and the rod 5, there is a method of reversing the rappet without mechanically connecting the reversing lever 4 and the rod 5. Even in this case, since the rotary lever 2 is configured to be able to be driven only when the spindle is full due to the stoppage of the spinner, there is a problem that the rappet cannot be reversed during spinning.

Structure of the invention (means for solving the problems) In order to solve the above problems, this invention uses a drive that is movably supported in a direction perpendicular to the longitudinal direction of the machine and that is reciprocated by a drive means. A pair of engaging protrusions are provided on the side surface of the end of the arm, and the rappet angle is configured such that at least a part of the engaging protrusions is located between the pair of engaging protrusions when the rappet angle is placed at the doffing stop position. A reversing lever is installed in an operating position that extends downward, and when one of the engaging protrusion or the reversing lever is located at the doffing stop position, the operating position is such that it can be engaged with the other, and the other is disengaged. A reversing lever is mounted so as to be movable to a retracted position and a holding means is provided for holding the reversing lever at an operating position.

(Function) In the device of this invention, the reversing lever that rotates the rappet together with the rappet angle between the normal spinning position and the retracted position that does not interfere with pipe changing operations is not mechanically connected to the drive arm. During handling, it is moved up and down along with the rappet angle completely independently of the drive arm. In addition, when the rappet angle is placed at a predetermined height when the machine is stopped for doffing, the reversing lever has a part that is located between the engagement protrusions provided at the tip of the drive arm. placed in position. In this state, the drive arm is moved by the drive means in a direction perpendicular to the longitudinal direction of the machine base, thereby driving the reversing lever via the engagement protrusion. Further, when the reversing lever or the engaging protrusion is manually moved to the retracted position against the force of the holding means, the reversing lever can be rotated independently of the drive arm.

(Example 1) Hereinafter, a first example embodying this invention will be described with reference to FIGS. 1 to 3. Note that the same parts as those of the conventional device are given the same reference numerals, and the description thereof will be omitted. A drive arm 13 is supported by a guide member 12 to be movable in a direction perpendicular to the longitudinal direction of the machine frame at the tips of the arms 2a and 2b of the rotary lever 2 as a drive means.
base ends thereof are rotatably connected via pins 6a and 6b. A pair of engagement protrusions 13a extending in the vertical direction are provided on the side surface of the distal end of the drive arm 13 in a protruding manner. On the other hand, as shown in FIGS. 2 and 3, a reversing lever 4 is attached to the lower surface of the end of the rappet angle 3 via a hinge 14. The hinge 14 has its axis 14c perpendicular to the longitudinal direction of the rappet angle 3, and one mounting piece 14a is fixed to the rappet angle 3 with screws 15, and the other mounting piece 1
4b is fixed to the upper end of the side surface of the reversing lever 4 with a screw 16. The reversing lever 4 is moved to the second position by the action of a torsion spring (not shown) provided on the hinge.
It is urged to rotate in the counterclockwise direction as shown in Figure 3, and when it is placed at a position almost perpendicular to the rappet angle 3, its upper end surface comes into contact with the lower surface of the rappet angle 3, and its rotation is restricted. is rappet angle 3
When the doffing stop position is placed, a portion of the doffing arm 13 is held in an operating position extending downward so as to be located between the engagement protrusions 13a of the drive arm 13.

Next, the operation of the apparatus configured as described above will be explained. During the winding operation, the lifting pillar 9 moves up and down together with the ring rail (not shown), and the reversing lever 4 also moves up and down together with the rappet angle 3. At this time, the reversing lever 4 is
It performs vertical movement while being completely separated from the other. When the winding operation continues and the tube becomes full, the winding operation of the machine is stopped while the rappet angle 3 is placed at a predetermined height position for tube change. At this time, the reversing lever 4 is arranged such that its lower end is located between the pair of engagement protrusions 13a of the drive arm 13. In this state, when the rotating lever 2 is rotated clockwise in FIG. The engaged reversing levers 4 are respectively rotated upward. Reversing lever 4
By the upward rotation, the rappet angle 3 and the rappet 8 are integrally rotated in the same direction and are placed in the retracted position. Thereafter, the pipe replacement work is performed, and when the rotating lever 2 is rotated counterclockwise after the pipe replacement work is completed, the drive arm 13 is moved back in the opposite direction to the above, and the The reversing lever 4 is rotated to its original position.

In case of emergency, if the operator manually reverses the rappet 8 to the retracted position for some reason, the operator should hold the reversing lever 4 so that its lower end is connected to the drive arm 13, as shown by the chain line in FIG. The engaging protrusion 13a of
The rappet angle 3 is rotated upwardly about the support shaft 11 by applying a force in a direction orthogonal to the longitudinal direction of the rappet angle 3. After the rappet angle 3 has been rotated upward by a predetermined angle or more by the action of a toggle device (not shown), it is urged to rotate so as to be held at the retracted position. After the work is completed, it is manually returned to its original position between the engagement protrusions 13a by the reverse operation.

(Embodiment 2) Next, a second embodiment will be described with reference to FIGS. 4 and 5. In the apparatus of this embodiment, the mounting state of the reversing lever 4 to the rappet angle 3 is different from the apparatus of the previous embodiment. That is, the rappet angle 3 has a long hole 1 extending along its longitudinal direction.
7 is formed, and the reversing lever 4 is attached to the lower surface of the rappet angle 3 via a square root bolt 18 having a square root portion slidable along the elongated hole 17. Further, a locking protrusion 19 is provided protruding from the lower surface of the rappet angle 3, and the reversing lever 4 is positioned between the engaging protrusion 13a of the drive arm 13 between the locking protrusion 19 and the reversing lever 4. A spring 20 is interposed as a retaining means for retaining the actuating position. The apparatus of this embodiment functions in the same manner as the apparatus of the previous embodiment during normal winding operation and during reversal operation of the rappet 8 for pipe change work. Further, when the operator manually reverses the lappet 8, the operator resists the elastic force of the spring 20 and moves the reversing lever 4 so that its lower end is connected to the engagement protrusion 13a as shown by the chain line in FIG. The rappet angle 3 is rotated independently of the drive arm 13 by moving it in parallel to a retracted position where the rappet angle 3 is removed from the gap, and applying force in a direction perpendicular to the rappet angle 3 in that state.

(Embodiment 3) Next, a third embodiment will be described with reference to FIGS. 6 and 7. In the device of this embodiment, the reversing lever 4 is fixed to the rappet angle 3, and one of the engaging protrusions provided at the tip of the drive arm 13 is moved by a pin 21 that is movable between an extended position and a retracted position. This embodiment differs greatly from both of the embodiments described above in its configuration. That is, the engagement protrusion 13a is provided at the tip of the drive arm 13.
A housing tube 22 is fixed to the side opposite to the protruding side of the housing tube 22, and a pin 21 is fixed to the other end of a spring 23, which serves as a holding means and has one end fixed to the bottom of the housing tube 22. The pin 21 is always held in the protruding position by the action of the spring 23, and when the rappet 8 is reversed for pipe changing operations, it functions in the same manner as in the device of the previous embodiment. In addition, when reversing the lappet 8 manually, the operator must press the pin 2 against the force of the spring 23.
1 into the housing cylinder 22 and rotate the reversing lever 4 in this state, the drive arm 13
The rotation of the rappet angle 3 is performed independently of the above.

Note that this invention is not limited to the two embodiments described above; for example, in the first embodiment, own weight or weight may be used instead of the torsion spring as the holding means for holding the reversing lever 4 in the operating position;
A magnet may be employed as the holding means in both embodiments. Further, the length of the reversing lever 4 may be increased, or a cylinder or the like may be used instead of the rotary lever 2 as a driving means for the drive arm.

Effects of the invention As detailed above, according to this invention, the reversing lever that rotates the rappet to the retracted position during pipe change work is not mechanically connected to the drive arm, unlike conventional devices, and the rappet is moved to the retracted position. Since the reversing lever or the engagement protrusion of the drive arm can be moved to the retracted position, the rappet can be reversed very easily by hand in the event of mechanical trouble or mid-way doffing. In addition, unlike conventional devices, the reversing lever 4 is operated completely independently of the drive arm during winding operation, so there is no friction between the lever and the drive arm, resulting in smooth operation at all times and the hassle of maintenance work. It becomes less.

[Brief explanation of the drawing]

1 to 3 show a first embodiment embodying this invention, in which FIG. 1 is a side view, FIG. 2 is a perspective view of main parts, FIG. 3 is a sectional view, and FIG. 5 shows the second embodiment, FIG. 4 is a perspective view of the main part, FIG. 5 is a sectional view, and FIGS. 6 and 7 show the third embodiment. 6 is a perspective view of the main part, FIG. 7 is a sectional view of the main part, and FIG. 8 is a side view of the conventional device. A rotating lever 2, a rappet angle 3, a reversing lever 4, a rappet 8, a driving arm 13, an engaging protrusion 13a, a hinge 14, a long hole 17, as a driving means.
Springs 20 and 23 serve as holding means, and pin 21 serves as an engaging protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. A pair of engaging protrusions are provided on the side surfaces of the distal end of a drive arm that is movably supported in a direction perpendicular to the longitudinal direction of the machine and is reciprocated by a drive means, and a rappet angle is provided. A reversing lever is installed in an operating position extending downward so that at least a portion of the lever is located between the pair of engaging protrusions when the rappet angle is placed at the doffing stop position, and With either the doffing lever or the reversing lever placed at the doffing stop position,
A rappet reversing device which is arranged movably between an operating position where it can engage with the other and a retracted position where it cannot engage with the other, and is provided with a holding means for holding the engaging protrusion or reversing lever in the operating position side. . 2. The rappet reversing device according to claim 1, wherein the reversing lever is rotatably attached to the lower surface of the rappet angle via a hinge in a direction perpendicular to the reversing direction of the rappet. 3. The reversing lever is attached to the rappet angle so as to be movable in parallel so as to extend downward from the rappet angle through a long hole formed along its longitudinal direction. Rappet inversion device as described.