JP2875214B2 - Ribbon winding prevention device for twill winding package - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn winding machine for a yarn winding machine in which a yarn is wound around a bobbin which rotates in contact with the yarn by guiding the yarn with a grooved traverse drum. The present invention relates to a ribbon winding prevention device, and can be applied to a yarn winding machine using a general grooved traverse drum, but in particular, a yarn winding using a grooved traverse drum with a built-in drive motor. It is suitable for use in a picking machine, and will be described below.

[0002]

2. Description of the Related Art A specific number of rotations between a package and a grooved traverse drum (hereinafter referred to as "drum") in a specific diameter range of a traverse package (hereinafter referred to as "package") during winding of a yarn. Ribbon winding occurs according to the ratio. This ribbon winding causes inconvenience such as thread breakage when unwinding the wound package.

In order to prevent the occurrence of such ribbon winding, conventionally, the power of a motor for driving the drum is alternately turned on and off to change the number of rotations of the drum and to rotate the drum in contact with the drum. In general, a method of preventing the occurrence of ribbon winding by generating a slip between a package and a drum.

[0004]

However, in the above-described conventional ribbon winding prevention method, since the change in the number of rotations of the drum is gradual, sufficient slip does not occur between the package and the drum, and the occurrence of ribbon winding does not occur. It could not be prevented reliably. In addition, the conventional ribbon winding prevention method attempts to prevent the occurrence of ribbon winding by causing a slip between the two while keeping the package in contact with the drum, so that the yarn is damaged and the quality is reduced. There were problems such as lowering.

The present invention has been proposed in view of the above-mentioned problems of the conventional ribbon winding prevention method, and an object of the present invention is to provide a ribbon winding prevention method without causing a slip between a drum and a package. To prevent the yarn from being damaged,
An object of the present invention is to provide a ribbon winding prevention device for a twill winding package capable of producing a high quality package.

[0006]

[0007]

[0008]

[0009]

[0010]

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a traversing guide for a yarn on a rotating grooved traverse drum, and winding the yarn on a bobbin rotating in contact with the drum. In the yarn winding machine for forming a package by means of a yarn, during the winding operation of the yarn, the grooved traversing drum is temporarily separated from the package via the support arm to break the contact, and thereafter, is brought into contact again. A drum contact separation control device that intermittently repeats the operation of the drum contact separation control device, and operates in association with the operation of the drum contact separation control device to hold the package in the current position while the grooved traverse drum is separated from the package. A bobbin holder support release control device that supports the bobbin holder, and releases the support of the bobbin holder when the grooved traverse drum returns to its original position and comes into contact with the package. It is those that were.

The above-mentioned drum contact / separation control device intermittently brings the grooved traverse drum and the package into and out of contact with each other during the winding operation of the yarn. A difference can be created between the rotation phase and the winding state, and then, by returning to the contact state and restarting the winding of the yarn, the occurrence of ribbon winding can be prevented without causing damage to the yarn due to slip. Prevention to produce high quality packages. The bobbin holder support / release control device allows the twill winding package or bobbin to move freely while the traverse drum with grooves and the twill winding package or bobbin are rotating in contact with each other. By holding the package or bobbin at the current position, it is possible to smoothly resume winding of the yarn by returning to the contact state.

The present invention is suitably applied to a grooved traverse drum having a built-in drive motor.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a yarn winding apparatus for forming a package by traversing a yarn on a rotating grooved traverse drum and wrapping the yarn on a bobbin rotating in contact with the drum. In the machine, during the winding operation of the yarn, the grooved traverse drum and the package are intermittently brought into contact and non-contact,
Thus, in the non-contact state, the basic idea is to generate a difference between the rotational phase of the package and the rotational phase of the grooved traverse drum.

The above-mentioned non-contact is performed for a very short time (for example,
0.5 to 2 seconds), and then return to the contact state to restart the winding of the yarn.
The non-contact intermittent operation is periodically performed from a point several seconds after the start of winding of the yarn (for example, contact / non-contact is performed for 0.5 seconds to
(Alternately at 2 second intervals).

The contact / non-contact can be performed by moving one or both of the grooved traverse drum and the package. Hereinafter, the configuration of the present invention will be described by taking, as an example, the case where the grooved traverse drum is moved.

FIG. 1 is a schematic perspective view showing an embodiment of a ribbon winding prevention device according to the present invention, FIG. 2 is a side view of a main portion thereof, and FIG. 3A is an enlarged front view for explaining a bobbin holder support release control device. , (B) is an explanatory side view thereof, and FIG. 4 is an enlarged front view for explanation at the time of the braking operation.

In FIG. 1, reference numeral 1 denotes a traverse drum with grooves.
2 is a drive motor, 3 is a shaft, 4 is a support arm, 5
Is a connecting shaft, 6 is a frame, 7 is a drum contact / separation control device, 8 is a package, 9 is a bobbin, 10 is a bobbin holder, 11 is a bobbin holder support release control device, 12
Indicates a thread.

The grooved traverse drum 1 has a cylindrical shape having a spiral traverse groove (not shown) on the outer peripheral surface, and a driving motor 2 is built in the cylinder. Drive motor 2
Has a rotor and a stator, the rotor is fixed to the cylindrical inner surface of the grooved traverse drum 1, the stator is fixed to the shaft 3, and both ends of the shaft 3 are fixedly supported by the support arms 4, 4. . During the winding of the yarn 12, the driving motor 2
Are continuously driven to rotate, and the traverse drum 1 with grooves integrated with the rotor is rotated around the stator. The grooved traverse drum 1 is rotatably supported concentrically on the shaft 3 via a suitable bearing.

The support arms 4 are pivotally supported by a frame 6 via a connection pivot 5 and connected to a drum contact / separation control device 7 via a connection bar 7a. I have. The drum contact separation control device 7 includes a bobbin 9
During the winding operation of the yarn 12, the traversing drum 1 with grooves is temporarily separated from the package 8 by the connecting bar 7a via the support arm 4 to break the contact. In order to prevent the occurrence of ribbon winding.

The package 8 is formed by winding a yarn 12 around a bobbin 9, and a bobbin holder 10
It is supported by. As shown in FIG. 2, the bobbin holder 10 has a rear end pivotally supported on a support frame 6a extending from a part of the machine frame 6 via a pivot 13 so that the bobbin holder 10 can move vertically. Both ends are rotatably supported. The bobbin 9 serves as a winding core of the package 8 and is detachably mounted on the bobbin holder 10 and is replaced when the package 8 has a predetermined winding amount. Bobbin 9 mounted on the tip of bobbin holder 10
Is formed by rotating the yarn 12 guided by the traverse grooves of the grooved traverse drum 1 by the frictional force in contact with the upper surface of the grooved traverse drum 1 to form a package 8. It is.

The bobbin holder support release control device 11 includes:
It operates in association with the operation of the drum contact separation control device 7, and supports the bobbin holder 10 to hold the package 8 at the current position while the grooved traverse drum 1 is separated from the package 8, When the grooved traverse drum 1 returns to the original position and comes into contact with the package 8, the support of the bobbin holder 10 is released, and the bobbin holder 10 is controlled so that it can swing freely.

2 to 4, a bobbin holder support / release control device 11 includes a contact / separation state detecting member 11a of the grooved traverse drum 1 with respect to the package 8, and a member 1a.
1a, the brake rod 11b and the brake disc 1
1c, pinion 11d, rack 11e and connecting rod 11f
And a support member 11g for supporting and releasing the bobbin holder 10 through the support member 11g.

The contact / separation state detecting member 11a is supported on one upper side of the support member 11g so as to be movable along the swinging direction of the support arm 4.
h, and the tip is brought into contact with the support arm 4. The contact / separation state detecting member 11a projects when the grooved traverse drum 1 is separated from the package 8, and retreats when it comes into contact. The contact / separation state detecting member 11
a, a cam portion 11a 'having a large diameter portion and a small diameter portion is provided, and the upper end of a brake rod 11b pressed upward by a spring 11i is brought into contact with the cam portion 11a' via a roller 11j. .

The brake rod 11b is supported by a support member 11g below the cam portion 11a 'of the contact / separation state detecting member 11a.
The brake disk 11c is pressed upward by a spring 11i from below, and has a brake surface on both sides that contacts the knurled outer surface of the brake disks 11c and prevents rotation. .

The brake discs 11c, 11c
1k, 11k, and pinions 11d, 11d are fixed to the shafts 11k, 11k.
The rack 11e is engaged with d. The shaft 11k, 1
1k is rotatably supported by the support member 11g, and the rack 11e is supported by the support member 11g so as to be able to move up and down.

The upper end of the rack 11e is connected to the connecting rod 1.
It is connected to the bobbin holder 10 via 1f. Therefore, the brake rod 11b is
When the brakes are applied to c and 11c, the movement of the rack 11e is restricted, the bobbin holder 10 is supported, and when the brake is released, the rack 11e moves freely and the bobbin holder 10 can swing freely.

The brake rod 11b is controlled to a raised position (brake position) and a lowered position (brake release position) by the cam portion 11a 'of the contact separation state detecting member 11a. The contact / separation state detecting member 11a comes into contact with the support arm 4, and protrudes when the grooved traverse drum 1 is separated from the package 8, and sets the brake rod 11b to the raised position (brake position) by the small diameter portion of the cam portion 11a '. When the traversing drum 1 comes into contact with the package 8, it retreats and the brake rod 11b is lowered to the lowered position (brake release position) by the large diameter portion of the cam portion 11a '.

The embodiment of the present invention has the above configuration, and the entire operation will be described below. First, at the start of winding, the drum 1 and the package 8 are at the positions shown in FIG. 2, and after a few seconds (for example, 5 to 6 seconds) after the start of winding, the drum 1 is connected to the connecting bar by the drum contact / separation control device 7. The support arms 4, 4 move to the position indicated by the dashed line about the connecting pivot 5 via 7 a, and are separated from the package 8 to be temporarily out of contact. Thereafter, the drum 1 is returned to a position where it contacts the package 8 by the drum contact separation control device 7. Drum 1
The guide point at the moment when the yarn 12 coming out of the traverse groove of the drum 1 separates from the drum 1 as the distance from the package 8 rotating in contact and the winding point at which the yarn 12 winds around the package 8 And the winding angle of the yarn 12 wound around the surface of the package 8 also gradually changes, and the winding of the yarn 12 wound around the surface of the package 8 at the time when the drum 1 is farthest from the package 8 is performed. The angle of change is the largest. Next, as the drum 1 approaches the package 8, the winding angle of the thread 12 wound around the surface of the package 8 gradually approaches the winding angle immediately before the drum 1 is separated from the package 8. The winding angle of the thread 12 wound around the surface of the package 8 when the contact rotation of the thread 1 starts again with the package 8 is determined by the drum. Because There is substantially the same as the wrap angle immediately before the separation from the package 8, not slip between the drum 1 and the package 8, since there is no damage of the yarn 12, no reduction in the quality of the yarn 12. The separating / re-contacting operation of the drum 1 changes the winding angle of the thread 12 on the surface of the package 8, thereby preventing the winding of the ribbon. By periodically repeating the separating / re-contacting operation, the winding of the package 8 is performed. It is possible to effectively prevent the occurrence of ribbon winding between the start of winding and the end of winding.

When the drum 1 is separated from the package 8, the bobbin holder 10 is supported by the bobbin holder support release controller 11 to hold the package 8 at the current position, and the drum 1 returns to the contact position again. Until the drum 1 returns to the contact position, the holding is released and the bobbin holder 10
Of the package 8 is made free, and the resumption of winding of the package 8 is facilitated.

In the above embodiment, the operation of the bobbin holder support / release control device 11 and the contact / separation control device 7 of the drum 1 is performed by mechanical means, but is performed by electrical means or fluid means. The replacement may be performed.

[0032]

According to the present invention, during the yarn winding operation,
The intermittent contact / non-contact between the grooved traverse drum and the package can produce a difference between the package rotation phase and the grooved traverse drum rotation phase. Thus, it is possible to produce a high-quality package by preventing the occurrence of ribbon winding without causing damage due to slippage.

Further, according to the apparatus of the present invention, since the grooved traverse drum is separated from the package, the contact separation control device has a simple structure and can be combined with the bobbin holder support release control device. This makes it possible to easily configure the ribbon winding prevention device.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a ribbon winding prevention device of the present invention.

FIG. 2 is a side view of a main part of FIG. 1;

FIG. 3A is an enlarged front view for explaining a bobbin holder support release control device, and FIG.

FIG. 4 is an enlarged front view for explanation at the time of a brake operation in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Groove traverse drum 2 Drive motor 3 Shaft 4 Support arm 5 Connecting pivot 6 Machine frame 7 Drum contact / separation control device 7a Connection bar 8 Package 9 Bobbin 10 Bobbin holder 11 Bobbin holder support release control device 12 Thread

Claims (2)

(57) [Claims] 1. A yarn winding machine for guiding a yarn on a rotating grooved traverse drum and wrapping the yarn around a bobbin rotating in contact with the drum to form a package. During the winding operation, the grooved traverse drum is temporarily separated from the package via the support arm to break the contact, and then is brought into contact again, and thereafter, the drum contact / separation control device that repeats this intermittently; Operates in conjunction with the operation of the separation control device, supports the bobbin holder to hold the package in the current position while the grooved traverse drum is separated from the package, and the grooved traverse drum is A bobbin holder support release control device for releasing the support of the bobbin holder when it returns to the position and comes into contact with the package. Prevention device. 2. The device according to claim 1, wherein the grooved traverse drum includes a drive motor.