JPS61273471A - High speed thread winding machine - Google Patents

Abstract

PURPOSE:To obtain more uniform and better physical property and form of a thread package being wound with increased productivity by keeping contact pressures applied on the package within + or -15% of the maximum from one end to the other of the package. CONSTITUTION:With a guide 9 supported by an elastic body 8a of relatively small coefficient of elasticity on both upper and lower surfaces, an adjustment screw 13 is adjusted so that a horizontal position of the winding start is obtained when a half contact pressure is applied on the tip of a drive roll 5. The coefficient of elasticity of the elastic body 8a is chosen to be smaller by 5% to 15% than the contact pressure at the foremost end set in the horizontal position with a deflection equivalent to the maximum inclination angle alpha of the drive roll 5. While the contact pressures the thread packages 11 and 12 receive during winding varies from 0% to 15% at the bottom and from 0% to -15% at the top, variation of these magnitudes are not detrimental to the physical property and form of the thread packages. These facts further contribute to improve physical property, uniformity and yield of the thread, unwinding speed of the thread packages and productivity.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fiber winding machine, and particularly to a fiber winding machine that is high-speed and large-packaged. This invention relates to a high-speed fiber winding machine that is capable of maintaining uniform and constant contact pressure throughout the fibers.

(Prior art) Conventionally, in high-speed fiber winding machines, the protruding bobbin holder shaft rotates at high speed, so rotational vibrations are suppressed by rigidly supporting the bearing, or conversely, the bearing or the entire bearing box is made elastic. Support and alleviate rotational vibration, or furthermore, interpose an elastic body between the bobbin holder shaft and the bobbin fitted thereto to alleviate rotational vibration including the fiber package being wound. Measures have been taken. However, in either case, a fiber package is formed because the fiber is not wound, and as the weight added to the protruding bobbin holder shaft increases, the bobbin holder shaft will bend. This deflection is thickest at the tip of the protruding bobbin holder shaft (the part near the base bearing is similar to the deflection of a cantilever beam, which is subjected to a small uniformly distributed load. With such a deflection, the horizontal Uniform pressure contact between the surface-driven roll mounted on the fiber package and the fiber package becomes impossible, and the properties of the wound fiber and the shape and physical properties of the fiber package tend to be poor. In order to improve the performance of the machine,
As larger and heavier fiber packages are formed at higher speeds, the fiber pancage on the deflected bobbin holder axis exhibits a gyroscopic effect, generating a kind of pre-vibration due to precession. However, this would cause constant vibration to the entire winding machine, making winding impossible under poor conditions.

To explain these in more detail, the winding of fibers originally requires correct traversing (device not shown), appropriate tension, and uniform drive roll contact pressure (hereinafter referred to as contact pressure). ), but this contact pressure is involved in both the winding tension and the shape and physical properties of the fiber package, and it is important to maintain a uniform value by reducing it to -1 throughout the winding process. This is an important point that affects the performance of the machine. In recent high-speed fiber winding machines, in order to improve productivity per unit, each company has focused its development on how to increase the winding speed and how to wind a large number of larger fiber packages. Efforts will inevitably be focused on developing low-vibration, high-speed, long-sized bobbin holder shafts.

On the other hand, the current situation is that there are problems that cannot be solved by the bobbin holder shaft alone. One of them is
Deflection of the bobbin holder shaft (tip droop) that occurs when a large fiber package is formed on the long protruding bobbin holder shaft.
The second problem is mechanical vibration due to the precession of the bent bobbin holder shaft caused by rotating at high speed with the fiber package attached, which has a relatively large moment of rotational inertia. Thirdly, the special excitation force due to ribbon winding that occurs when winding a thick denier fiber is sharply and intensively generated between the drive roll root and the frame side fiber pancage 12 due to the deflection of the bobbin holder shaft. , which may have an adverse effect on each bearing.

In a high-speed winding machine with a long bobbin holder shaft, the holder shaft hangs down due to the weight of the fiber package during winding, and when it is released from the restraint from the drive roll, the gyro is activated by the rotational inertia of the fiber package. The effect is to create a precession movement, especially when the fiber package at the tip comes into contact with and separates from the drive roll, creating a slow periodic pre-oscillation.

When this is mild, it is just a pre-vibration and does not cause a fatal problem, but when it becomes severe, it not only flips up the drive roll, deforms the fiber package into a polygonal shape and makes it impossible to wind it, but also causes damage to the bearings of the winding machine. Excessive load and risk of damage may result.

In addition, in high-speed thick denier fiber winding machines, in addition to the pre-vibrations mentioned above, vibrations occur due to ribbon winding. Conventionally, this is caused by the bending of the bobbin holder shaft, and while the tip pan cage escapes from the drive roll, the root In the side pancage, a phenomenon occurs in which the intersecting layers of the ridges of the ribbon winding periodically strike the drive roll at the location where the contact pressure of the drive roll is concentrated, applying a strong impact load to the bearing of the bobbin holder shaft and causing damage to the shaft. The reaction force was transmitted from the drive roll, which had no elastic support, to the drive bracket, causing strong vibrations.

(Problems to be Solved by the Invention) As described above, according to the conventional fiber winding machine, the increase in speed and the use of large packages have caused the bobbin holder shaft to bend, and the fiber package and drive roll to be connected to each other. The contact pressure between the ribbons will differ locally, and pre-vibration will also occur due to precession, especially in large denier high-speed fiber winders. A phenomenon occurs in which the layers periodically hit the drive roll, and a strong impact load is applied to the bearing part of the bobbin holder shaft.
As a result, the entire machine vibrates, which has caused various problems.

The present invention was made in order to solve the above problems, and it is an object of the present invention to provide a high-speed fiber winding machine that can withstand an increase in the length of the bobbin holder shaft and large-scale packaging.

(Means for Solving the Problems) Therefore, the present invention provides a high-speed fiber winding machine that includes a pressure roll that presses against the outer periphery of a bobbin or fiber package, a joint support device that elastically supports one end of the pressure roll, and a joint support device that elastically supports one end of the pressure roll. This is a means for solving the above-mentioned problem by having the end fixed to a swinging guide that is slidable only in the direction of pressure contact with the bobbin and supports viscoelastically.

(Function) One end of the pressure roll is elastically supported by a joint, and the other end is fixed to a swinging guide that slides only in the direction of pressure contact with the bobbin, fiber package, etc. and is viscoelastically supported. Even if the bobbin holder shaft is bent as the weight of the package increases during the process, the pressure roll will also apply uniform contact pressure to the surface of the fiber package. Furthermore, by setting the elastic modulus of each elastic body of the joint support section and the swing guide section to a desired value, vibrations and shocks of the contact pressure roll including the joint section are absorbed and alleviated, while various reaction forces are It will withstand well.

(Embodiment) Below, embodiments of the present invention will be described with reference to the drawings.
Figures 4 through 4 are explanatory diagrams of the principles and specific structure of a surface drive type high speed fiber winder showing this embodiment.

In the figure, reference numeral 1 denotes a frame of a high-speed fiber winding machine, into which a bobbin holder shaft support bearing (not shown) is incorporated, and rotatably supports a protruding bobbin holder shaft (not shown). Reference numeral 10 denotes bobbins fitted to the bobbin holder shaft, and although two bobbins are shown in the illustrated example, any number of bobbins may be used and the number is not limited to two. 11.12
is a filament package formed on the outer periphery of the bobbin 10, but similarly any number of filament packages may be used and the number is not limited to two. Reference numeral 2 denotes slide rails that are vertically fixedly supported by the frame 1, and usually two slide rails are fixed in parallel. Reference numeral 3 denotes a slide block that is loosely fitted onto the slide rail 2 and can slide only up and down. A drive roll bracket 4 supports the surface drive roll, and is firmly and horizontally fixed to the slide block 3.

Therefore, the drive roll bracket 4 is configured to be able to slide up and down together with the slide block 3 while maintaining a horizontal position.

5 is an out rotor type surface drive roll (hereinafter referred to as a drive roll), which was originally a drive roll bracket 4.
When the bobbin 10 or fiber package 11.12 protrudes horizontally when the bobbin 10 is lowered, the upper surface of the bobbin 10 or fiber package 11. In the case of the invention, the drive roll 5 is supported at both ends by elastic bodies 7 and 8 having vibration damping ability so as to be tiltable within the limits. Reference numeral 6 denotes a joint support device provided at the root side of the drive roll 5 (closer to the frame 1), and has a structure that does not prevent the tip of the drive roll 5 from swinging up and down about this joint support device. However, the structure is such that the drive roll 5 as a whole cannot move from side to side and back and forth, or rotate relative to each other at the joint part beyond the allowable deflection of the elastic body 7.

Reference numeral 9 is a guide for vertically swinging the tip of the drive roll 5, and also serves to receive reaction forces when starting, driving, and stopping the drive roll. Furthermore, this guide 9
is provided with an adjustable damping function capable of absorbing the rocking vibration energy of the drive roll 5. 13 raises and lowers the position of the elastic body 8, and in turn sets the inclination of the drive roll 5 to the optimum position, so that the fiber package 11 is always maintained during fiber winding.
．． This is an adjustment screw to maintain uniform pressure contact with 1.
Reference numeral 4 denotes a screw receptacle, which is a female screw fixed to the drive roll bracket 4 or directly machined. 6a, 6
b is Pro 7 fixed to drive roll bracket 4
6C is a joint pin fitted into the support shaft end of the drive roll 5, which together with the elastic body 7 supports the joint support device 6.
It consists of 8a is an elastic body that supports the guide 9;
b denotes one or more elastic O-rings, which constitute the elastic body 8 described above. In addition, in the above, the arrangement of the joint support device 6, guide 9, etc. may be reversed from left to right, and furthermore, a touch roll having a structure to similarly support a cutter roll (without a built-in drive source) instead of the drive roll 5 may be used. It is also possible to use a high-speed fiber winder based on the above-mentioned method.

Next, the operation will be explained. When starting the winding of the filament, the bobbin holder shaft (not shown) is horizontal and the surface of the bobbin 10 is also horizontal, so the drive roll 5 that presses against it is also horizontal. At this time, the pressure applied by the entire drive roll 5 to the bobbin 10 is about 10 to 20 kg, so adjust the adjustment screw 13 in advance so that the pressure is evenly applied from the base to the tip of the bobbin 10.

The starting torque reaction force of the drive roll 5 and the drive reaction force (lateral force) generated when the drive roll 5 drives the bobbin 10 or the fiber package 11, 12 are controlled by the swing guide 9, the joint pin 6C, and the blocks 6a, 6b. Uke can be stopped.

As the fiber winding progresses, the fiber package 11.1
When both the diameter and the weight of the bobbin holder 2 increase, the bobbin holder shaft (not shown) becomes deflected, and the deflection angle β of the tip becomes β>O. At this time, the drive roll swings to form an angle α with respect to the horizontal line passing through the joint pin 6C, and substantially evenly contacts the surface of the fiber package 11, 12 to apply uniform contact pressure. If the bobbin holder shaft is elastically supported,
If the rigidity of the shaft is large enough for the weight of the fiber package, α and β will be angles that can be considered the same from a mechanical engineering point of view, but on the other hand, if the bobbin holder shaft is rigidly supported, If is not large enough for the weight of the fiber package, β>α, but even in that case, the contact pressure will be almost uniform for multiple fiber packages 11.12, and the physical properties and shape of the same package will be make it uniform.

In addition, when the fiber is of medium or large denier, a ribbon winding (overlap winding) phenomenon occurs when the number of rotations of the fiber package and the number of times of traversing of the fiber become integers during winding, and the fiber package 11
．． 12 is formed on the surface of the package, and the intersecting portions of the ridges are particularly raised, forming layered protrusions on the surface of the package. This layered convex portion makes particularly strong contact with the drive roll 5, giving an impact to the drive roll 5 and the illustrated bobbin holder shaft, applying an excessive load to each bearing and causing abnormal vibration in the entire winding machine.

In order to alleviate the impact caused by this ribbon winding intersection, an O-ring 7, which is an elastic body, is used in the joint support device 6.
This reduces the transmission of impact force to the drive roll bracket 4, improves the transient response of the drive roll 5, and reduces the impact load applied to the support bearing of the bobbin holder shaft (not shown). For this purpose, it is necessary to make the elastic modulus of the O-ring 7 at least one order of magnitude larger than that of the other elastic body 8 that supports the tip of the drive roll 5.

The tip of the drive roll 5 (stator shaft) is fitted into the swing guide 9 and fixed, and a certain amount of swing is allowed.
Rotation and movement in the forward and backward directions and in the left and right directions are regulated by the guide 9, the elastic O-ring 8b, and the like. On the other hand, regarding the swinging direction, the surface of the guide 9 is processed into an arc shape centered on the joint pin 6C on the base side, and the guide 9
Since the upper and lower surfaces of the filament are supported by elastic bodies 8a with a relatively small elastic modulus, the filament is structured to be able to move freely in balance with external forces, but the horizontal position at the beginning of winding of the filament is limited by % of the contact pressure. The adjusting screw 13 is adjusted so as to be obtained when the fiber is applied to the tip of the drive roll 5, so that uniform contact pressure is guaranteed at the beginning of winding the fiber.

The elastic modulus of the elastic body 8a is 5 to 15 of the contact pressure (% of the total contact pressure) at the tip set in the horizontal position at a deflection corresponding to the maximum inclination angle α of the drive roll 5 during fiber winding. %
Select so that the amount decreases. By setting like this,
The contact pressure that the fiber package 11.12 receives during winding varies from 0 to 15% (maximum) at the root C, and varies from O to 15% at the tip.
-15% (minimum) variation, but this value is filament package 1
This is a value that does not cause any practical problems in terms of physical properties and shape of 1.12.

Incidentally, one or more elastic O-rings 8b are provided, and are pressed against the lubricated arcuate surface of the swing guide 9 with an appropriate force so as to exert a damping effect on the swing vibration of the drive roll 5. It is configured. That is, even when the drive roll 5 contacts the bobbin 10 at the beginning of winding the fiber,
The O-ring 8b is also violently vibrated by the displacement vibration caused by the ribbon winding during winding, as well as by the precession vibration caused by the high-speed rotation of the fiber package 11, 12. The appropriate pressure contact force is selected by test winding.

(Effects of the Invention) As described above in detail, according to the present invention, the contact pressure applied to the fiber package during winding can be increased by up to ±15 from one end to the other.
%, the physical properties and shape of the package are uniform.
Moreover, it becomes good. This in turn greatly contributes to productivity, such as improving and uniformizing the physical properties of the filament, improving the yield in the winding process, and increasing the speed of disassembling the filament package.

In addition, in the present invention, the contact pressure roll is made swingable, so even if the bobbin holder shaft droops, the contact pressure roll maintains the same inclination and continues to apply pressure to the fiber package, thereby suppressing precession. Furthermore, since an elastic damping mechanism is added to reduce impact vibration, pre-vibration is significantly alleviated.

Furthermore, in the present invention, the contact pressure roll is inclined in accordance with the deflection of the bobbin holder shaft (not shown), and the contact pressure is evenly distributed from the tip to the base, so that the displacement vibration caused by the bumps in the ribbon winding is dispersed and alleviated. Moreover, since the drive roll itself is supported by an elastic body, it has the effect of absorbing displacement vibration, alleviating impact force, and at the same time preventing transmission. This can be obtained in particular by selecting an appropriate elasticity modulus of the elastic O-ring of the joint support device.

In addition, when design conditions and usage conditions such as the weight of the contact roll, the magnitude of the winding contact pressure, and the maximum deflection of the bobbin holder shaft change, there is no room for adjusting vibration isolation with conventional high-speed fiber winders. However, within the limits of the present invention, it is possible to change the elastic modulus and number of O-rings of the joint support device, change the elastic modulus of the elastic body of the guide and its position, and even change the O-ring that is pressed against the guide. The vibration isolation effect can be made more effective by making fine adjustments such as changing the number and the contact force of the .

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing the principle of the present invention, and Fig. 2 is a partial diagram of a high-speed fiber winding machine showing an embodiment of the present invention. Explanation of the main parts 4... Drive roll bracket 5 - Drive roll 6-Joint support device 7.8-Elastic body 9-Guide 11.12--Fiber package patent Applicant Mitsubishi Heavy Industries, Ltd. Figure 1

Claims (1)

[Claims] In a high-speed fiber winding machine, there is a pressure roll that presses against the outer periphery of the bobbin or fiber package, a joint support device that elastically supports one end of the roll, and a joint support device that elastically supports the other end of the roll, and a viscoelastic roller that is slidable only in the direction of pressure contact with the bobbin, etc. A high-speed fiber winder characterized by being fixed to a supporting swing guide.