JP2001058760A - Turret type winder - Google Patents

Abstract

(57) [Summary] In a turret-type yarn winding machine, when a turret is rotated, a touch roller can be transferred from a full bobbin to an empty bobbin quickly and with an appropriate set contact pressure so that good continuous operation is achieved. Provided is a turret-type yarn winding machine provided with a touch roller contact pressure adjusting device capable of performing accurate winding. When a full bobbin is switched between an empty bobbin and an empty bobbin, and the empty bobbin is positioned at a take-up position, an air cylinder is provided to a support member rotating toward the empty bobbin. 1
8 and the touch roller 13 is moved to the empty bobbin 3
With a predetermined contact pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch roller contact pressure adjusting device for continuously winding yarn at a predetermined contact pressure by changing the position of a full bobbin and an empty bobbin held by a bobbin holder by rotating a turret. The present invention relates to a turret-type yarn winding machine provided with:

[0002]

2. Description of the Related Art In general, a turret type yarn winding machine for continuously winding synthetic fiber yarns has two bobbin holders rotatably mounted on a rotatable turret, and a bobbin is mounted on each bobbin holder. The two bobbin holders are arranged such that one is located at the winding position and the other is located at the standby position, and the turret is rotated by 180 degrees each time the bobbin arranged at the winding position is fully loaded, and is at the standby position. Is moved to a winding position, and winding is started on an empty bobbin, and the yarn is continuously wound alternately by two bobbin holders.

At this time, as a method of switching the yarn from the full bobbin to the empty bobbin, in the process of shifting the full bobbin from the winding position to the standby position by rotation of the turret,
Generally, a method in which a yarn is wound around an empty bobbin while the yarn is gripped by a yarn gripping means provided at a base end portion of a bobbin holder and the yarn is cut by a cutting tool to start winding the empty bobbin. Is being done.

[0004]

As described above, in the conventional turret type yarn winding machine, as shown in FIG. 6, the traverse device B rotates in accordance with the winding of the bobbin A at the winding position. A touch roller C is disposed on the front side of the traverse device B, and the bobbin A is wound by the action of a spring D that is stretched between the traverse device B from a fixed portion. At this time, winding is performed while pressing the touch roller C with a predetermined contact pressure. The contact pressure at this time is set by the urging force of the spring, and as shown in the relationship between the contact pressure and the winding diameter in FIG.
The contact pressure gradually decreases, and good winding is performed. FIG. 7 shows a state in which a full bobbin having a predetermined winding diameter X is obtained. The turret type yarn winding machine is set so that a contact pressure can be obtained even when a predetermined winding diameter is obtained. ing. Therefore, at the time when the bobbin winding position to become the turret rotates fully wound state the winding start of the winding for each empty bobbin is contact pressure good winding start that starts from E ₀ in spite When the touch roller pressing the full bobbin moves to the standby position and the empty bobbin moves to the winding position, the touch roller pressing the full bobbin becomes full by the urging force of the spring that sets the contact pressure. will be migrated dramatically from the winding bobbin to an empty bobbin, contact pressure at the point of contact by the collision at that time becomes temporarily high contact pressure as E _1, then the touch roller is bound to an empty bobbin Te becomes lower contact pressure, such as E _2, is disadvantageously not be performed is taken good winding in winding start. Such has a damper to absorb the abrupt fluctuation of the contact pressure is also performed method of interposing, when interposing the damper, the initial pressure in that case is lowered started as E _2, until then the maximum value Undesirably, a curve that rises and then descends is drawn.

When the contact pressure at the beginning of winding is set to a low value of E ₃ depending on the product and the whole is loosely wound, the setting is changed by shifting the fulcrum position of the spring. , the contact pressure E ₄ at the time of winding end is lower as shown in FIG. When contact pressure of the winding end is lower than the predetermined contact pressure E ₆ shown by a dotted line in FIG. 6, can not migrate to the empty bobbin from the touch roller is quickly full bobbin during the rotation of the turret by the urging force of the spring, again contact pressure of the winding start is not preferable that the winding state of the winding start without recovery only to E ₅ is relaxed.

In view of the above situation, the present invention allows a turret-type yarn winding machine to transfer a touch roller from a full bobbin to an empty bobbin quickly and with an appropriate set contact pressure when the turret rotates. It is an object of the present invention to provide a turret-type yarn winding machine provided with a touch roller contact pressure adjusting device which enables good and continuous winding.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a pair of bobbins respectively supported by bobbin holders are arranged so that their rotation centers are parallel to each other and the turrets have the same center. The bobbin that is fully wrapped and the bobbin that is empty are switched by rotation of the turret, and the touch roller that is in contact with the bobbin that is located at the winding position supports the touch roller toward the bobbin. The touch roller presses the yarn winding portion of the bobbin by the biasing force, and the support receiving the biasing force moves in the bobbin diameter increasing direction in accordance with the bobbin winding. A turret type that is driven to rotate and, when a full bobbin and an empty bobbin are switched to each other and an empty bobbin is located at the winding position, the bobbin returns and returns to the empty bobbin side. In the winding machine, an air cylinder that advances and retreats a rod in the direction of rotation of the support, receives the support at the rod tip, and brakes the rotation of the support, and a frame that is attached and fixed in position by attaching the air cylinder A touch plate contact pressure adjusting device comprising a support plate fixed to the support plate, and when the support member rotates backward, an air cylinder is provided with respect to the support member so as to resist the return rotation operation of the support member. The present invention solves the above-mentioned problem by providing a turret-type yarn winding machine characterized in that the turret-type yarn winding machine is characterized in that braking is performed by the above-described method and a touch roller is brought into contact with an empty bobbin with a predetermined contact pressure.

In the present invention, the support is disposed in parallel with the pivot shaft, one end of which is engaged with the pivot shaft and rotates in the opposite direction to the pivot shaft, and is attached to an end of the return shaft. Touch roller return means comprising an arm for rotating a return shaft and an air cylinder having a rod end connected to the end of the arm, and in an initial stage when the support returns and rotates, The support may be biased by an air cylinder so as to participate in the return rotation of the support.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 shows a turret-type yarn winding machine 1. The turret-type yarn winding machine 1 has a bobbin holder 2 that rotates in the same direction.
A pair of bobbins 3 respectively mounted and supported at respective symmetric positions on the same circumference of the turret 4 with the center of rotation of the turret 4 interposed therebetween with the centers of rotation parallel to each other. Is fully wound, the turret 4 rotates axially to change the winding position with the other empty bobbin 3. In FIG. 1, the bobbin holder 2 and the turret 4 rotate clockwise, and the thread a contacts the lower side of the empty bobbin 3 located at the winding position. In a state where the yarn a extends over the full bobbin 3 via the empty bobbin 3, cutting is performed between the empty bobbin 3 and the full bobbin 3, and the yarn a is wound by the empty bobbin 3 at the winding position. Do. As described above, the thread a is cut between the empty bobbin 3 at the winding position and the full bobbin 3 at the standby position by the catch ring 5 provided on the bobbin holder 2 of the empty bobbin 3. This is carried out in a state where the thread a is held by the claw portion 5 a, and the thread a can be started to be wound in a state where the cutting portion side of the empty bobbin 3 is held by the catch ring 5. In addition, although the cutting mechanism of the thread a is omitted in the drawings to facilitate the description of the invention, it is not particularly limited, and a known cutting mechanism can be employed.

In the figure, reference numeral 6 denotes a traverse device, which winds the yarn a from the supply source along the direction of the rotation center of the empty bobbin 3 and winds the yarn a on the empty bobbin 3 while increasing the bobbin diameter according to the winding thickness. When the full bobbin 3 and the empty bobbin 3 are switched to each other and the empty bobbin 3 is located at the winding position, the bobbin 3 is rotated back to return to the empty bobbin 3 side. As shown in FIG. 3, the traverse device 6 includes a mechanism for continuously changing the winding position of the traverse device 6 with respect to the empty bobbin 3 by waving the yarn a. Box 7, a support body 8 on which this cam box 7 is rotatably arranged on one end side, and a turret type winder 1.
The pivot 10 is inserted and fixed to the other end of the support 8 through the frame 9 whose position is fixed, and serves as the center of rotation of the traversing device 6. A link portion 11 is provided between the traverse devices 6 so that the inclination of the cam box 7 is maintained even when the entire traverse device 6 rotates. The traverse device 6 is mounted on a support 8, and a pressing mechanism 12 is incorporated in the support 8 so as to press the yarn winding portion of the bobbin 3. The pressing mechanism 12 is constituted by a touch roller 13 that is in contact with the center direction and a spring 15 that extends between the adjustment tool 14 fixed to the frame 9 and the support body 8. The yarn winding portion is pressed even when the empty bobbin 3 is thickened and the support body 8 is driven to rotate in the diameter increasing direction by pressing the yarn winding portion. That is, by the operation of the pressing mechanism 12, the support body 8 is driven to rotate in the bobbin diameter increasing direction in accordance with the thickening of the bobbin 3 while maintaining the state where the touch roller 13 presses the yarn winding portion, and furthermore, When the full bobbin 3 and the empty bobbin 3 are switched to each other and the empty bobbin 3 is located at the winding position, the bobbin 3 returns to the empty bobbin 3 and rotates. The contact pressure of the pressing mechanism 12 is adjusted by the adjusting tool 14.

In the turret type yarn winding machine 1, when the empty bobbin is located at the winding position, the touch roller 13 is adjusted so as to be in contact with a predetermined contact pressure, which is shown in FIGS. 2, a touch roller contact pressure adjusting device 16 is provided. The touch roller contact pressure adjusting device 16 moves the rod 18a forward and backward in the direction of rotation of the support 8, and receives the support 8 at the tip of the rod 18a to brake the rotation of the support 8.
And a support 17 in which the air cylinder 18 is fixed to the frame 9 via a bracket (not shown). The air cylinder 18 is mounted so as to face the support 8 of the traverse device 6 caused by the pressing mechanism 12, and the urging force of the spring 15 of the pressing mechanism 12 as described above. By
When the touch roller 13 switches from the full bobbin 3 to the empty bobbin 3, the return rotation operation jumps and shifts to the empty bobbin 3, and the contact pressure rapidly rises and falls due to the collision at that time. Therefore, the raised support 8 is received by the rod 18a of the air cylinder 18, and the support 8
The air cylinder 18 is contracted by a contraction operation of the air cylinder 18 so as to oppose the return rotation operation of the airbag. Is pressed. Therefore, since the touch roller 13 of the pressing mechanism 12 comes into contact with the predetermined contact pressure, the winding of the empty bobbin 3 can be started from the predetermined contact pressure state, and appropriate winding is performed. A stopper 1 for limiting the rotation range of the support 8 is provided on a part of the support plate 17.
7a is preferably provided.

Further, the winding in the case of setting the contact pressure of the start low, when the contact pressure is lower than a predetermined contact pressure E ₆ shown in FIG. 7, only the urging force of the spring 15 which biases the contact pressure of the support transition operation 8 to the empty bobbin 3 is not from that rapid in the early stages, contact pressure of the winding start is reduced as E _5, possibly winding state of the winding start is obtained by relaxation is there. Therefore, FIGS. 3 and 4 show the touch roller returning means 19 in consideration of this point, and are assembled so that a force is transmitted to the pivot 10 on which the support 8 rotates. The touch roller return means 19 is disposed in parallel with the pivot 10, and one end of the touch roller return means 19 is arranged so that a return shaft 20 that meshes with the pivot 10 and rotates in the opposite direction to the pivot 10 penetrates the frame 9. An arm 21 attached to the other end is attached, and an air cylinder 22 to which an end of a rod is connected is provided at an end of the arm 21. In the touch roller returning means 19, the full bobbin 3 is rotated by rotation of the turret 4.
Is moved from the winding position, the empty bobbin 3 is located at the winding position, and the touch roller 13 that has come off from the full bobbin 3 rotates toward the empty bobbin 3 by the action of the spring 15 of the pressing mechanism 12. Since the urging force of the spring 15 is set low when the touch roller 13 comes into contact with the touch roller 13, the urging force of the air cylinder 22 is reduced by an arm because the urging force of the air cylinder 22 is not rapidly performed in the initial stage of the returning rotation operation. The touch roller 13 is brought into contact with the empty bobbin 3 with a predetermined contact pressure in conjunction with the return rotation operation of the pressing mechanism 12 in addition to the return rotation operation of the support body 8 via the return shaft 20 and the return shaft 20. It was made. At this time, as shown in FIG.
The touch roller return means 19 performs the urging K when the is rotated back toward the empty bobbin 3 from the point G at the end of winding to the limit point H of the stroke of the air cylinder 22. Then, after the point H, the return rotation operation L by the spring 15 is performed, and after the point I at which the support 8 is received by the rod 18a of the touch roller contact pressure adjusting device 16, the braking M by the air cylinder 18 is not applied. By the application, the touch roller 13 can be brought into contact with the empty bobbin 3 at a predetermined contact pressure at the point J where the empty bobbin 3 comes into contact, and the empty bobbin 3 is appropriately wound. In FIG. 5, the state in which the touch roller contact pressure adjusting device and the touch roller return means are involved in the return rotation operation is shown as an angle region, and the angles of the operations K, L, and M shown in the figure are shown. Does not represent the actual angle.

As described above, the touch roller contact pressure adjusting device 1
In 6, when the support body 8 rotates toward the empty bobbin 3 by the action of the pressing mechanism 12, and the touch roller 13 comes into contact with the support body 8,
The braking by the air cylinder 18 is performed so as to reduce the contact pressure on the empty bobbin 3 generated by the action of the pressing mechanism 12, so that the touch roller 13 is brought into contact with the empty bobbin 3 with a predetermined contact pressure. ing. In the touch roller returning means 19, when the support 8 rotates toward the empty bobbin 3 by the action of the pressing mechanism 12 and the touch roller 13 comes into contact with the touch roller 13, the air cylinder 22 urges the support 8 to perform touch. The roller 13 is quickly returned and rotated, and is brought into contact with the empty bobbin 3 with a predetermined contact pressure.

[0014]

As described above, according to the turret type yarn winding machine of the present invention, at the beginning of yarn winding, the touch roller presses the yarn winding portion of the empty bobbin with a predetermined contact pressure.
The appropriate contact pressure of the same touch roller is applied to each empty bobbin located at the winding position by the rotation of the turret so that the yarn can be wound under the same conditions for any bobbin. It has an effect that is excellent in practicality.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a first example of a turret type yarn winding machine according to the present invention.

FIG. 2 is an explanatory diagram showing a state in which the touch roller contact pressure adjusting device in the first example is assembled.

FIG. 3 is an explanatory view showing, in a partial cross section, a state in which a touch roller contact pressure adjusting device according to a second example is assembled to the traverse device.

FIG. 4 is an explanatory view showing a touch roller contact pressure adjusting device in a second example.

FIG. 5 is an explanatory diagram showing a relationship between a touch roller contact pressure adjusting device and a region in which a touch roller return unit is involved in a return rotation operation.

FIG. 6 is an explanatory view showing a bobbin at a winding position and a traverse device in a conventional turret type yarn winding machine.

FIG. 7 is an explanatory diagram showing the relationship between the contact pressure and the bobbin winding diameter in a graph.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Turret type yarn winding machine 3 ... Bobbin 4 ... Turret 6 ... Traversing device 8 ... Support body 10 ... Axis 12 ... Pressing mechanism 13 ... Touch roller 16 ... Touch roller contact pressure adjusting device 18 ... Air cylinder 19 ... Touch roller Return means 22 ... air cylinder

Claims (2)

[Claims] A pair of bobbins respectively supported by bobbin holders are disposed at symmetrical positions on the same circumference of the turret with the rotation centers parallel to each other with the center of the turret interposed therebetween. The bobbin and the bobbin are switched by the rotation of the turret, and the touch roller in contact with the bobbin located at the winding position is urged toward the bobbin via a support that supports the touch roller, and the urging force causes the touch roller to move. Presses the yarn winding portion of the bobbin, the support receiving the urging force is driven to rotate in the bobbin increasing direction in accordance with the thickening of the bobbin, and the full bobbin and the empty bobbin are switched. When the empty bobbin is located at the winding position, in a turret type yarn winding machine that rotates back to return to the empty bobbin side, the rod is moved forward and backward in the rotating direction of the support. With
A touch roller contact pressure adjusting device including an air cylinder that receives the support at the rod tip and brakes the rotation of the support and a support plate that is attached to the air cylinder and fixed to a fixed frame is provided. When the support rotates back, the air cylinder is braked on the support against the return rotation of the support, and the touch roller is brought into contact with the empty bobbin with a predetermined contact pressure. A turret-type yarn winding machine, characterized in that: 2. A return shaft which is arranged in parallel with a pivot that rotates, one end of which is meshed with the pivot and rotates in the opposite direction to the pivot, and a return shaft attached to an end of the return shaft and pivots the return shaft. A touch roller return means comprising an arm to be driven and an air cylinder having a rod end connected to the end of the arm, and in an initial stage in which the support returns and rotates, The turret-type yarn winding machine according to claim 1, wherein biasing is performed on the support by an air cylinder so as to be added to the moving operation.