JPH065324Y2 - Package unwinding detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a package unwinding detection device for detecting a yarn unwinding of a wound package.

[Prior Art] The present applicant has previously proposed a device for detecting the unwinding of the yarn in order to automatically perform the yarn knotting of the package wound with the rod ("The device for detecting the unrolling of the package"). , JP-A-63-230
481 publication].

As shown in FIGS. 4 to 6, this device is installed side by side with the building device 1 for knotting yarns, and the package P
A suction pipe 2 that moves axially and in the radial direction along with a release sensor 3 that captures a yarn Y formed as a main winding balloon after the rod winding Q is unwound by the suction pipe 2. Has been done.

Then, the yarn unwinding is stopped by the capturing of the balloon to prevent the loss of the normal yarn Y, and the yarn Y of the main winding is restrained as it is and provided on the moving slide frame 4 and provided on the package P. Threading guide 5 that turns around
Then, the yarn Y is hooked and passed to the building apparatus 1.

[Problems to be Solved by the Invention] However, in the above-described conventional unwinding detection device, there is a problem that an error occurs in the yarn knotting performed as a series of operations after detecting the unwinding of the unwinding.

That is, the suction pipe 2 returns to the side of the package P after removing the rod winding Q, and forms a yarn path with the release sensor 3 so that the yarn hooking guide 5 can hook the yarn Y. It is like this. At this time, the yarn Y may come off the release sensor 3 depending on the winding direction of the package P and the suction tension.
Since the original yarn path is changed, the yarn Y does not enter the building device 1.

Further, in order to prevent the yarn disengagement, if the angles of the sensing groove 6 of the release sensor 3 that captures the yarn Y and the guide groove 8 of the guide plate 7 that supports the release sensor 3 are changed to a higher direction, the building device 1 After the yarn enters, the yarn Y captured by the release sensor 3 is taken to the upper standby position as it is,
After all, the thread knot cannot be made.

Therefore, in view of the above circumstances, the present invention was devised to provide a package unwinding detection device for a package that can catch a yarn so that the yarn knotting operation does not fail.

[Means for Solving the Problems] The present invention provides a hook member that captures a yarn balloon unwound from a wound package and guides the yarn balloon to a yarn detection sensor, and a yarn that holds the hook member in a restrained manner. And a hook member supporting means for constraining or releasing.

[Operation] With the above configuration, the hook member captures the balloon when the winding is unwound, causes the yarn detection sensor to detect the yarn, and restrains the yarn even after the detection. At this time, the hook member supporting means holds the hook member in an upward posture such that the hook member is raised to prevent the yarn from coming off, and when restraint is no longer required, the hook member is changed to a downward posture and the yarn is pulled from the hook member. Let go.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 and FIG. 2 show an embodiment of a roll unwinding detection device for a package according to the present invention. The same components as those of the conventional device are designated by the same reference numerals, and the description thereof will be omitted. .

This rod unwinding detection device catches a balloon formed in the same manner as the conventional one, and a hook member 12 that guides the balloon to the thread detection sensor 1, and a hook member 12 that holds the thread member 12 in a freely depressed manner. It is mainly configured by a hook member supporting means 13 for restraining or releasing.

The hook member 12 is made of a plate having a restraining groove 14 at the lower end,
A thread detection sensor 11 that detects the presence or absence of the thread Y by contacting the thread Y is attached to the lower end portion. The restraining groove 14 is formed by linearly cutting from the side end so as to restrain the yarn Y so as to sandwich it, and is substantially overlapped with the groove-shaped sensing portion 15 of the yarn detecting sensor 11. On the opening side, a guide portion 16 having a triangular diameter is formed so as to catch the yarn Y and guide it to the restraining groove 14 and the sensing portion 15. Therefore, the lower end of the hook member 12 is formed as a beak-shaped guide piece 17.

The hook member supporting means 13 is configured to have a screw rod 18 extended in the vertical direction and a support plate 20 attached to a lower end portion of the hook rod 18 via a boss 19, and the hook member 12 includes:
It is supported via studs 21 protruding from the support plate 20.

The screw rod 18 is screwed to the output end of the drive motor 23 fixed to the main body frame 22 with a ball screw.
The main body frame 22 is formed by including the building device 1 and the like, and when the drive motor 23 is rotationally driven,
The screw rod 18 moves up and down.

The stud 21 is attached to the support plate 20 via a boss 24 so as to be rotatable around its axis, and the opposite side thereof is fixed in the upper part of the restraining groove 14 of the hook member 12. A base end of a lever 25 extended upward is fixed in the middle of the stud 21, and the extension end 26 and a pin 27 attached to the upper portion of the support plate 20 are connected by a tension spring 28. Therefore, the hook member 12
With the stud 21 as a fulcrum, it is always urged counterclockwise in FIG.

On the other hand, above the hook member 12, a conveyor roller 29 for appropriately suppressing the hook member 12 is provided at a position opposite to the restraining groove 14 with the stud 21 interposed therebetween. The conveyor roller 29 abuts on a bracket plate 30 fixed to the main body frame 22 near the support plate 20 and a cam block 31 mounted on the bracket plate 30, and rolls along the respective surface portions 32 and 33. It is supposed to do. The surface portion 32 of the bracket plate 30 is vertical, and the surface portion 33 of the cam block 31 is inclined so as to move away from the surface portion 32 of the bracket plate 30 as it goes upward.
Each is formed.

The conveyor roller 29 is formed so as to hold the hook member 12 in the catching posture when it is in contact with the surface portion 32 of the bracket plate 30. In the present embodiment, the restraint groove 14 is held so that the opening axis line (opening direction) L of the restraint groove 14 is upward by about 30 degrees from the horizontal.

In addition, the conveyor roller 29 is the surface portion 33 of the cam block 31.
When the hook member 12 is in contact with, the hook member 12 is moved to the right of the position shown in FIG. 1 to rotate the hook member 12 clockwise against the urging force of the tension spring 28. That is, when the support plate 20 is pulled upward, the hook member 12 also moves upward and gradually falls, so that the yarn Y contained in the restraining groove 14 comes off in the process. . In the present embodiment, the opening axis L is formed to be substantially horizontal at the standby position at the upper limit of movement.

In addition, the support plate 20 is provided with a balloon raising member 35 supported via a horizontally mounted bar 34. The balloon raising member 35 is made of a nylon thread hanging down in a U shape, and its tip 36 contacts the package P so as to repel the unwinding thread Y, thereby promoting the rising of the balloon. .

A position sensor 37 facing the package P is attached to the support plate 20. This position sensor 37
Detects the distance from the package P when the support plate 2 and the hook member 12 descend, and outputs the signal to the drive motor 2
3, the gap between the surface of the package P and the hook member 12 is kept constant regardless of the difference in the diameter of the package P, and the distance and contact pressure of the balloon raising member 35 in contact with the package P. Is set to be constant.

Next, the operation of this embodiment will be described.

When the package P is conveyed to a predetermined position, the suction pipe 2 unwinds the rod winding Q by its air suction force and further forms a main winding balloon. The hook member 12 is
The balloon is captured by the guide portion 16 and is guided to the yarn detection sensor 11 to detect the yarn Y. By this detection, the unwinding of the rod winding Q is confirmed, and the yarn knotting operation is subsequently performed.

As shown in FIG. 3, after the yarn Y of the balloon is captured, the suction pipe 2 turns to the side of the package P and is hooked on a yarn hooking guide (not shown) between the suction pipe 2 and the hook member 12. The hook member 12 at this time forms a thread path to be used.
Is held upward by the hook member supporting means 13 as compared with the conventional one. Therefore, the captured yarn Y leans against the guide piece 17 and is not separated from the restraining groove 14.

Then, at the timing when the yarn Y is delivered to the building device (not shown) by the turning yarn hooking guide, it is raised to the characteristic position as shown by the solid line in FIG. At this time, the conveyor roller 29 provided on the hook member 12 causes the cam block 3 to move.
It comes into contact with the surface 33 of No. 1 and is pressed relatively,
The hook member 12 is rotated clockwise about the stud 21. That is, the hook member 12 is in a posture in which the lower end portion is gradually lowered as it rises, and in this process, the yarn Y sucked by the suction pipe 2 is released from the restraining groove 14.

After the yarn Y is detached from the hook member 12, the building device 1
The thread knot on the surface of the package is made by.

After the yarn Y is detached from the hook member 12, the building device 1
The thread knot on the surface of the package is made by.

As described above, the hook member supporting means 13 is provided on the hook member 12, and the hook member supporting means 13 is held upward during capturing, and the yarn Y is disengaged by depressing its posture as it rises, so that the yarn knotting operation is started. The yarn Y can be restrained up to the time point, and a predetermined yarn path is secured. That is, it is possible to prevent an error in the knotting operation. Since the yarn Y is released from the hook member 12 immediately after being passed to the building apparatus 1, it does not affect the yarn knotting operation.

In the present embodiment, the restraint groove 14 (guide portion 16)
In the capture position and standby position
Although the angles are horizontal, these directions can be arbitrarily set as necessary by changing the shapes of the cam block 31 and the hook member 12 or the positions of the bearing rollers 29.

[Effects of the Invention] In short, according to the present invention, the following excellent effects are exhibited.

A hook member that captures the balloon and guides it to the thread detection sensor,
Since it is provided with a hook member supporting means for holding the yarn in a restrained manner and restraining or separating the yarn, it is possible to prevent the captured yarn from coming off, and to smoothly remove the yarn from the hook member when restraining becomes unnecessary. It is possible to separate the yarn and to prevent a mistake in the yarn knotting operation, which is the process after capturing.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a roll unwinding detection device for a package according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view for explaining its operation. FIG. 5 is a side view showing the entire device for knotting a thread, FIG. 5 is a front view showing a conventional rod unwinding detection device, and FIG. 6 is a side view thereof. In the figure, 11 is a thread detection sensor, 12 is a hook member, and 13 is a hook member supporting means.

Claims (1)

[Scope of utility model registration request] 1. A hook member for capturing a balloon of a yarn unwound from a rolled-up package and guiding it to a yarn detection sensor.
A bar-roll unwinding detection device for a package, comprising: a hook member supporting means for holding the hook member freely and restraining or releasing the thread.