JPS6040533Y2 - Automatic winding machine - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an automatic yarn winding machine.

In general, a turret-type automatic winding machine has a turret table on which two bobbin holders, each of which has a bobbin mounted thereon, are rotatably supported, and the yarn winding is switched by rotating the turret table. When switching the yarn winding mode, when the yarn catching section installed at the end of the bobbin catches the yarn, the yarn becomes slack, so immediately after catching the yarn, the bobbin holder is moved in the axial direction. When the transfer tail is moved to form a transfer tail, the transfer tail absorbs the slack and becomes loose, causing loops or fluff.

For this reason, conventionally, a cam groove provided for moving the bobbin holder in its axial direction is provided with a vertical portion extending along a plane perpendicular to the rotational axis of the turret table, and this vertical portion is formed at the start of transfer tail formation. By engaging the cam follower, the axial movement of the bobbin holder is stopped even while the turret table is rotating, and the bobbin is punch-wound to absorb slack in the yarn.

However, in such a conventional cam groove structure, due to the mechanical strength of the cam groove, it is necessary to provide bends with a large radius of curvature as buffer sections at both ends of the vertical portion.

Therefore, it has been difficult to instantaneously stop or start the movement of the bobbin holder in the axial direction.

Another problem was that it was not possible to change the temporary stop time of the bobbin holder when changing the denier or winding speed.

This idea was created by focusing on these conventional problems, and includes a locking part provided on the periphery of the turret table symmetrically with respect to the center of rotation, and a locking part provided on the main body to connect to the locking part. and an engaging means for engaging the bobbin holder, and when the yarn is caught on the bobbin, the engaging means is engaged with the locking portion to stop the rotation of the turret table, thereby moving the bobbin holder in its axial direction. The purpose is to temporarily stop the system and solve the above-mentioned problems.

This invention will be explained below based on the drawings.

1 to 5 are diagrams showing an embodiment of this invention.

First, the configuration will be explained. In Fig. 1, reference numeral 1 designates the main body of the automatic winding device according to this invention, and a guide block 4 on which a friction roller 2 and a traverse mechanism 3 are fixedly mounted is provided on the upper part of the main body 1 so as to be movable in the vertical direction. It is being

Below this guide block 4 is a turret table 5.
is rotatably supported by the main body 1, and a cylinder 6.7 and notches 8, 9 connected at one end to the cylinder 6.7 are provided on the main body 1 on both sides, respectively.

These notches 8, 9 each have a projection 10.11 formed at the other end thereof, and are each rotatably supported by the main body 1 via a pin 12.13.

The cylinder 6 and notch 8 and the cylinder 7 and notch 9 constitute engaging means, respectively.

Notch holes 14 and 15 as locking portions are respectively provided on the periphery of the turret table 5 in point symmetry with respect to its rotation center.

These notch holes 14, 15 form projections 10. when the notches 8, 9 are rotated by the cylinder 6.7.
11 is inserted and engaged to stop the rotation of the turret table 5.

Further, a bobbin holder 19.20 on which a bobbin 17.18 for winding the yarn 16 is mounted is supported on the turret table 5 so as to be movable in the axial direction thereof, as shown in FIG.

The traverse mechanism 3 is provided with a traverse guide 21 that traverses the yarn 16 wound around the bobbin 17 or 18, and the friction roller 2 moves the yarn 16 wound around the bobbin 17 or 18 by vertical movement of the guide block 4. The bobbin 17 or 18 is driven and rotated while contacting the taken yarn and keeping the surface pressure constant.

In FIG. 2, 27 is an actuator fixed to the main body 1. The turret table 5 is attached to this actuator 27, and the turret table 5 is rotated as shown by the arrow in FIG. 1 by the operation of this actuator 27. do.

Cam followers 23.24 are fixed to the shaft portions 32, 22 of the bobbin holder 19.20, respectively, and the cam followers 23.24 are engaged with a continuous meandering annular cam groove 25 provided in the main body 1. It is made to match.

Therefore, the bobbin holder 19.degree. 20 becomes movable in the axial direction as the turret table 5 rotates.

Incidentally, reference numerals 28 and 29 are thread catching parts, such as notches, provided at the ends of the bobbin 17 and 18, respectively.

Next, the action will be explained.

First, when the yarn 16 is wound around the bobbin 17, the protrusion 1 of the notch 8 is inserted into the notch hole 14 of the turret table 5.
0 is inserted, and the rotation of the turret table 5 is stopped.

When the bobbin 17 is fully wound, the cylinder 6 is driven, the notch 8 is rotated about the pin 12, and the protrusion 10 is removed from the notch hole 14.

Next, the actuator 27 is operated and the turret table 5 starts rotating in the direction of the arrow.

As this rotation progresses, the bobbin holder 20 with the empty bobbin 18 mounted thereon is moved in its axial direction toward the back of the paper in the figure by the cam groove 25 and the cam follower 24.

This movement ends just before the bobbin holder 20 reaches the position where the bobbin holder 19 was, and at this time, the yarn 16 is removed from the traverse guide 21 by a guide (not shown), and the bobbin 17 is removed as shown in FIG. A punch winding 30 is formed at the end of the full winding.

At this time, the thread 16 is running while contacting the free end side of the thread catching portion 29 of the bobbin 18.

Next, when the turret table 5 further rotates, the bobbin holder 20 is moved to the left in the figure (in the direction of the paper in FIG.
6 is captured.

Since the circumferential speeds of the bobbins 18 and 19 are different, the yarn 16 is cut between the bobbins 18 and 19 due to tension.

At this time, the yarn 16 becomes slack. At the same time, the cylinder 7 is driven, the notch 9 rotates, and its protrusion 11 is inserted into the notch hole 14, and the rotation of the turret table 5 is temporarily stopped.

Therefore, the movement of the bobbin holder 20 in the direction toward the front of the paper in FIG. 1 is temporarily stopped, and a punch winding 31 is formed on the bobbin 18 as shown in FIG. 4.

As a result, the slack in the yarn 16 that occurs during capture is removed by the punch winding 3.
1 is absorbed.

When a predetermined number of punch windings 31 are formed, the cylinder 7
is driven to remove the protrusion 11 from the notched hole 14.

Then, when the turret table 5 starts rotating again,
With this rotation, the bobbin holder 20 moves toward the front of the paper in FIG. 1 and reaches the position where the bobbin holder 19 was located.

During this time, a transfer tail 32 is formed on the bobbin 18, as shown in FIG.

Next, the operation of the actuator 27 is stopped, the cylinder 6 is driven, the projection 10 of the notch 8 is inserted into the notch hole 15, and the rotation of the turret table 5 is stopped.

At this time, the thread 16 is removed from a guide (not shown) and captured by the transfer guide 21, and the thread 16 is removed from the bobbin 20.
contacts the friction roller 2, and the yarn 16 traversed by the transfer guide 21 is wound onto the bobbin 18.

Next, after the fully wound bobbin 17 is taken out from the bobbin holder 19, a new empty bobbin is attached to this bobbin holder 19.

In the above description, a notch hole is provided in the turret table, but a pin may be provided upright on the surface of the turret table, and a protrusion may be hooked onto this pin.

As explained above, according to this invention, a locking portion is provided on the periphery of the turret table and is point symmetrical with respect to its rotation center, and the engaging means provided on the main body is engaged with this locking portion. As a result, the rotation of the turret table is stopped and the movement of the bobbin holder in the axial direction is temporarily stopped, so that when the yarn is caught on the bobbin, a punch winding is formed on the bobbin.

Therefore, the slack in the yarn that occurs when the yarn is captured can be absorbed by the punch winding, and the transfer tail that is subsequently formed will not be slack, looped, or fluffy.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an automatic winding machine according to this invention;
FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIGS. 3, 4, and 5 are explanatory diagrams illustrating the state of the automatic winding machine according to this invention when the yarn winding is switched. . 1...Body, 5...Turret table, 17.18...Bobbin, 19.20...
...Bobbin holder, 16... Thread, 6,7
・・・・・・Cylinder, 8.9・・・Notchi,
14,15...notch hole.

Claims (1)

[Scope of utility model registration request] It has a turret table that is rotatably supported by the main body, and two bobbin holders that are supported by the turret table and move in the axial direction as the turret table rotates, and each bobbin is attached to the bobbin. In an automatic winding machine that automatically switches yarn winding to the other bobbin by rotating a turret table, a lock is provided on the periphery of the turret table in point symmetry with respect to the center of rotation of the turret table. and a means provided on the main body to engage with the locking portion, and when the yarn is caught on the other bobbin during yarn winding switching, the engaging means is temporarily engaged with the locking portion. An automatic winding machine characterized in that the turret table is engaged with the turret table to stop the rotation of the turret table and the movement of the bobbin holder in the axial direction is temporarily stopped.