JPH0313486Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a package brake in an automatic winder that winds up a package by bringing it into contact with a winding drum.

(Prior Art) Conventionally, when thread breakage occurs in an automatic winder, the winding package is stopped and the thread splicing operation is performed in a short time. In this case, there are roughly two types of ways to fasten the package. First, the first method is to separate the package from the winding drum and apply brakes to each package individually when thread breakage occurs. This fastening method is effective in terms of yarn quality because a brake can be built into the package holder when the package cage is made of corn cheese. However, if the package is made of Paracheese (1 inch φ woodwind), it is not possible to incorporate a brake due to structural reasons, so this fastening method is not adopted. Furthermore, a method has been disclosed in which the bobbin shaft of the package cage is actively braked to stop it (Japanese Patent Publication No. 49-95), but according to this method, the package cage rotates several times before it stops. The surface layer of the package is disturbed. Furthermore, the ends of the yarn become unraveled, causing various problems.

Next, the second fastening method is to passively stop the package by applying a brake to the winding drum in an automatic winder that winds up the package by bringing the package into contact with the winding drum. This method of stopping poses no problem when the package has a small diameter, but as the diameter of the package increases, it becomes difficult to stop the package in a short time.
This is due to the weight of the package cage, but each time the brake is applied when cutting the thread, the package cage surface layer is disturbed, causing fuzz, pilling, etc., and reducing the quality of the yarn.
In addition, the winder efficiency was reduced due to mistakes in sucking out the thread.

(Problems to be solved by the invention) The present invention is designed to quickly stop the inertial rotation of the package cage when the brake is applied to the winding drum in a conventional automatic winder that winds up the package by bringing the package into contact with the winding drum. This is what was done.

(Means for Solving the Problems) The present invention has the following configuration in order to eliminate the drawbacks of the conventional technology and quickly stop the inertial rotation of the package in an automatic winder. That is, the present invention is an automatic winder that winds up a package by bringing it into contact with a winding drum, and is configured such that when winding is interrupted, the contact pressure between the package and the winding drum is increased while the package remains in contact with the winding drum. It is a package brake.

The present invention will be explained below based on the figures. 1st
2 shows one example of an automatic winder equipped with a package brake, and FIG. 3 shows another example. FIG. 1 shows the normal winding state, and FIG. 2 shows the state when the winding is interrupted, such as when the thread breaks. In FIGS. 1 and 2, W is a schematic side view of the automatic winder, and 1 is a winding drum, which is driven, operated, and stopped by a motor (not shown). The package 2 is pivotally supported by a cradle arm 3 and is brought into contact with the winding drum 1 under its own weight. Reference numeral 7 denotes a cam, which rotates in the direction of the arrow around axis A in response to signals such as thread breakage. 4 is a cradle lever, which rotates together with the cradle arm 3 about an axis E.
Reference numeral 5 denotes a contact pressure lever, which can freely swing left and right about an axis C as a fulcrum. This contact pressure lever 5
is bent in the middle at axis D, and a cam roller 8 is rotatably provided at one end, and the other end is in contact with point B of cradle lever 4, and point 9 of contact pressure lever 5. and point 10 are elastically connected by a spring 6. When the cam 7 rotates in the direction of the arrow, the cam 7 contacts the cam roller 8 and swings the contact pressure lever 5 around the fulcrum C in the direction of the arrow.
The upper end of the contact pressure lever 5 is connected to the cradle lever 4
The cradle lever 4 is pressed against the spring 6 while contacting the point B of the cradle lever 4.
As a result, the cradle arm 3 swings in the direction of the arrow to temporarily force the package 2 against the winding drum 1.

Next, another example in FIG. 3 will be explained. In the figure, reference numeral 11 denotes an air cylinder, a cylinder 12 of the air cylinder 11 is connected to a supply source of compressed air or oil (not shown), and a piston 13 is designed to move up and down.
The upper end of the piston 13 is connected to the cradle lever 4 at point F, and the cradle arm 3 and cradle lever 4 are structured to rotate left and right around an axis E, and the package cage 2 is temporarily rolled up. The contact pressure with the drum 1 can be increased.

(Function) First, in Fig. 2, when a package brake is required due to a thread breakage, the cam 7 receives a signal (not shown) and rotates in the direction of the arrow around the axis A, and when it reaches point G, pushes the cam roller 8. Therefore, the contact pressure lever 5 rotates clockwise about the axis C as shown by the arrow, and the upper end of the contact pressure lever 5 moves against the spring 6 to point B on the cradle lever 4. As a result, the cradle arm 3 rotates counterclockwise around the axis E, temporarily increasing the contact pressure on the package 2, and quickly stopping the package 2, completing the yarn splicing and passing the H point. Then, as shown in Fig. 1, the contact pressure is released and the winding state becomes normal.

Next, in FIG. 3, compressed air or oil is supplied to the cylinder 12 in response to a signal (not shown), the piston 13 is pushed up, the cradle lever 4 is rotated counterclockwise around the axis E, and the package 2 is rotated counterclockwise. As soon as the contact pressure is temporarily increased and the predetermined operation is completed, the piston 13 returns downward and the cradle lever 4
Rotate clockwise around axis E. As a result, the contact pressure of the package 2 is released.

(Effects of the invention) According to the package brake of the present invention, there is less slippage with the winding drum when the package cage stops rotating, there is no deterioration in quality due to disturbance of the package cage surface layer, and the thread exit efficiency when suctioning the thread is improved. ,
In addition, even when the diameter of the package is increased, the time until the package stops is shortened, so cycles such as thread splicing can be performed as before, and even when it is difficult to install a brake on the package side, such as with para-cheese, etc. The package can be stopped particularly effectively.

[Brief explanation of the drawing]

The figures relate to the present invention; FIGS. 1 and 2 are schematic side views of one example in which a package brake is attached to an automatic winder, and FIG. 3 is a schematic side view of another example. 1... Winding drum, 2... Package cage, 3...
...Cradle arm, 4...Cradle lever,
5...Contact pressure lever, 6...Spring, 7...
...Cam, 11...Air cylinder.

Claims (1)

[Scope of utility model registration request] An automatic winder that winds up a package by bringing the package into contact with a winding drum, characterized in that the package is configured such that when winding is interrupted, the contact pressure between the package and the winding drum is increased while the package remains in contact with the winding drum. Package brake in automatic winder.