JPH08208117A - Spun yarn winder - Google Patents

Abstract

PURPOSE: To improve quality of a wound spun yarn package by suppressing vibration of a spun yarn winder. CONSTITUTION: In a spun yarn winder provided with a touch roller 31 which is rotatably supported by a frame main body so as to project outward into a cantilever state and rotates by a prescribed speed so as to rotatingly contact with a package, and a bobbin holder which is rotatably and elevatingly supported by the frame main body so as to project outward into a cantilever state and holds a bobbin, the end of the touch roller 31 has a columnar hole 71a so that a weight 72 is set to be attachable to the columnar hole 71a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning winder for winding an elastic yarn spun from a spinning machine.

[0002]

2. Description of the Related Art A conventional take-up winder will be described with reference to FIGS. 3 to 5. FIG. 3 is a front view of the spinning machine 1 and FIG. 4 is a side view thereof. A touch roller 4 rotatably supported by the frame body 2 and protruding in a cantilever shape is a bobbin holder 4 that is rotatably supported by the frame body 2 and protrudes in a cantilever shape. Traverse device, 6 is operation panel, B
Is a bobbin, Y is an elastic yarn guided from a spinning machine, and P is a package formed by winding the elastic yarn Y around a bobbin B.
FIG. 5 is an enlarged cross-sectional view of the touch roller 3 and the bobbin holder 4, and the right side portion of both is a portion accommodated in the frame body 2. The touch roller 3 is composed of a cylindrical roller body 7 and a roller shaft 8 connected by a bottle and an end plate, and is rotatably supported in the frame body 2 by two bearings 9 in a cantilever shape. The roller shaft 8 is driven and rotated at a predetermined speed by an induction motor (not shown) via a driven pulley 10 fixed to one end of the roller shaft 8 by a key, a spacer, a washer, and a nut. The bobbin holder 4 is composed of a cylindrical holder body 11 and a holder shaft 12, which are connected to each other.
The holder shaft 12 is rotatably supported in a cantilever shape by two bearings 13 on an elevating device (not shown) provided on the frame body 2 so as to be able to move up and down. It has a built-in chuck mechanism (not shown) that grips the peripheral surface. During the winding operation, a plurality of bobbins B are fitted into the bobbin holder 4 from the tip and grasped by the chuck mechanism, and the bobbin holder 4 is pushed up by the elevating device to push the upper surface of the bobbin B or the package P with an appropriate pressing force of the touch roller 3. The bobbin B is rotated by pressure contact with the lower surface, the outer peripheral speed is constant, and the rotational speed is gradually reduced to wind up the spun yarn. The elastic yarn Y from the spinning machine is first introduced into the traverse device 5, where it is reciprocally traversed in the axial direction, passed between the touch roller 3 rotating at a constant speed and the bobbin B, and wound on the bobbin B. , And is formed into a twill-wrapped package P. When it is full, stop the device and remove the package.

[0003]

As described above, the touch roller 3 and the bobbin holder 4 both overhang like a cantilever, and the bobbin holder 4 side is driven from the touch roller 3 side through the package P of the elastic yarn Y. In the contact rotation system in which the touch roller 3 is rotated, the touch roller 3 is often
Then, the bobbin holder 4 vibrates violently. This phenomenon occurs when the touch roller 3 and the bobbin holder 4 are both attached to one shaft 1
It is considered that it is a rigid system, and the package P is modeled as a viscoelastic body having three characteristics and theoretically analyzed, and it is reported that it agrees well with the experimental result using an actual machine. According to this report, when the integral n times the rotation speed of the bobbin holder 4 approaches the coupled natural frequency of the vibration system formed by the touch roller 3, the bobbin holder 4, and the package P, the touch roller 3 and the bobbin holder 4 are reversed. It has been found that the package resonates in the phase mode and the polygonal phenomenon occurs in which the package self-excitingly forms an n-gon. The package P
The resonance caused by the polygonalization of the package occurs when the winding thickness of the package is approximately 6 to 10 mm, and the touch roller 3 and the package P
May develop into vibration with collision. The take-up speed of the take-up winder is usually about 300 to 800 m / min, and the touch roller rotation speed is in the range of 19.4 to 51.8 Hz. Therefore, there is a problem that the resonance phenomenon occurs at a high rate and the life of the winder is shortened. The present invention solves the problems of the conventional device and suppresses the vibration of the spinning winder to improve the quality of the wound spinning package.

[0004]

Therefore, according to the present invention, there is provided a touch roller which is rotatably supported by a frame body and protrudes in a cantilever shape, rotates at a predetermined speed and is brought into rolling contact with a package, and a touch roller which rotates on the frame body. In a spinning winder having a bobbin holder that is supported in a vertically movable manner and projects like a cantilever and that holds a bobbin, a cylindrical hole is provided at the tip of the touch roller, and a weight can be attached to the cylindrical hole. The touch roller is rotatably supported by the frame body and protrudes in a cantilever shape, rotates at a predetermined speed and contacts the package, and the cantilever beam is rotatably and vertically supported by the frame body. In a take-up winder having a bobbin holder that protrudes in a circular shape and holds a bobbin, an airtight cylindrical hollow portion is formed in the touch roller, and the tip side wall is diametrically outwardly symmetrical. In this arrangement, two communication holes communicating with the hollow portion and a plug for closing the communication hole are provided so that a fluid can be enclosed in the hollow portion, and these are used as means for solving the problems. Is.

[0005]

By the above means, when resonance does not occur during the operation of the take-up winder, the weight is not mounted or the fluid is not enclosed in the cylindrical hole or the cylindrical hollow portion at the tip of the touch roller. If resonance occurs due to
A weight is attached or a fluid is enclosed in a cylindrical hole or a cylindrical hollow portion at the tip of the touch roller. Since this increases the mass of the touch roller, the natural frequency of the touch roller is lowered, and therefore the coupled frequency of the vibration system including the touch roller is changed to effectively avoid the occurrence of resonance accompanied by the polygonalization phenomenon. You can When the fluid is sealed in the cylindrical hollow portion of the touch roller, the fluid moves so as to cling to the entire circumference of the inner wall of the touch roller during operation to reduce the imbalance of the touch roller. Join.

[0006]

Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view of the touch roller 31 according to the first embodiment, and 71 is a cylindrical roller body similar to the roller body of the conventional example, which is located at a position slightly to the right from the left end in the figure and at two positions at the right end. Is connected to the roller shaft 8 at a boss portion (end wall) thereof, and a cylindrical hole 71a is formed on the tip side of the left boss portion. For reference, the right boss is joined by taper fitting. Reference numeral 72 denotes a cast iron cylindrical weight, which is internally fitted in the cylindrical hole 71a and is fixed to the screw by a plurality of bolts 73 so as to be provided on the left boss portion of the roller body 71. FIG. 2 is a sectional view of the touch roller 32 according to the second embodiment. Reference numeral 74 is a cylindrical roller body, and 74a is a hollow portion formed therein, and the left boss portion is located closer to the left end than in the case of FIG. 1 and the hollow portion is expanded. The roller shaft 8 is hermetically coupled via an O-ring 75. The left boss portion is provided with communication holes 74b, which communicate with the two hollow portions 74a, at symmetrical positions on the outer side in the diametrical direction, and screw plugs (blind lids) 76 are screwed into the communication holes 74b. The two communication holes 74b are used as an inlet and outlet for a fluid such as oil and a vent. F is a sealed fluid such as oil.

Each operation of the touch rollers 31 and 32 having the above construction will be described. In both the touch rollers 31 and 32, the rigid portion on the right side of the roller shaft 8 is fixed by two bearings 9, and can be roughly modeled as a vibration system of one axis and one rigid system. By attaching the touch roller 32 and enclosing a fluid such as oil in the touch roller 32, the mass of the rigid portion is increased and the natural frequency is changed to the lower side. Therefore, the natural frequency of coupling between the touch roller 31 or 32 and the bobbin holder 4 also changes, and the occurrence of resonance can be avoided. The touch roller 32
In the case of 1, the damping property due to the motion of the enclosed fluid such as oil promotes the suppression of resonance.

[0008]

As described in detail above, according to the present invention, when resonance occurs during operation of the take-up winder, a weight is attached to the tip of the touch roller or a fluid such as oil is sealed in the touch roller. By increasing the mass of the touch roller, the natural frequency can be lowered and resonance can be stopped, and it is possible to effectively prevent continuation of operation in the resonance state as in the past and extend the life of the machine. Moreover, since the vigorous vibrations due to the polygonalization of the spinning package do not occur, the quality of the package can be improved. Further, in the structure in which the fluid is enclosed in the hollow portion of the touch roller, the vibration damping action due to the movement of the fluid such as oil in the touch roller can be expected.

[Brief description of drawings]

FIG. 1 is a sectional view of a touch roller according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a touch roller according to a second embodiment.

FIG. 3 is a front view of a conventional take-up winder.

FIG. 4 is a sectional view of a conventional take-up winder.

FIG. 5 is an enlarged cross-sectional view of a conventional touch roller and bobbin holder portion.

[Explanation of symbols]

 1 Spinner Winder 2 Frame Main Body 4 Bobbin Holder 8 Roller Shaft 9 Bearing 10 Driven Pulley 31, 32 Touch Roller 71a Cylindrical Hole 72 Weight 74a Hollow Part 74b Communication Hole 76 Screw Plug F Fluid

Claims (2)

[Claims] 1. A touch roller rotatably supported by a frame main body, protruding in a cantilever shape, rotating at a predetermined speed and rollingly contacting a package, and a cantilever supported rotatably and vertically by a frame main body. A spinning winder having a bobbin holder that projects in a fixed shape and holds a bobbin, wherein a cylindrical hole is provided at the tip of the touch roller, and a weight can be attached to the cylindrical hole. 2. A cantilever which is rotatably supported by a frame main body and protrudes in a cantilever shape, and which rotates at a predetermined speed and contacts the package, and a cantilever which is rotatably and vertically supported by the frame main body. In a take-up winder having a bobbin holder that protrudes in a circular shape and holds a bobbin, two air-tight cylindrical hollow portions are formed in the touch roller, and the hollow portions communicate with the hollow portions at diametrically outward symmetrical positions of the tip side wall. And a plug for closing the communication hole, wherein a fluid can be enclosed in the hollow portion.