JPH058295Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a winding machine for fibers, yarn, etc., and in particular to a high-speed winding machine that prevents the generation of heat in the rotating parts due to increased speed. It is.

(Conventional technology) In recent years, winding machines have become faster in order to improve productivity and yarn quality.
Winding machines that can reach speeds of up to 6000 m/min are about to appear.

However, as winding machines have become faster, various problems have arisen in their rotating parts, such as the tatsuchi rolls and the motors themselves. For example, the problem of wear is naturally accompanied by the problem of heat generation, and the rotating parts generate heat due to high-speed rotation, which has a large effect on the life of the bearing and other factors.

To explain this in detail with reference to FIGS. 3 and 4, reference numeral 1 is a tatsuchi roll, and the tatsuchi roll 1 comes into contact with a winding ball 4 such as a yarn 4,
The surface speed of the winding bobbin 4 is detected and the speed of the bobbin drive motor 7 is controlled by a control device (not shown) to keep the yarn winding speed constant. Both shaft ends of this touch roll 1 are supported by a bracket 3 via ball bearings 2, 2'.

Reference numeral 6 denotes a bobbin holder, the drive side end of which is connected to a bobbin drive motor 7.

FIG. 4 shows an example of this bobbin drive motor 7, in which numeral 4 is a wound yarn, and 5 is a paper tube around which the yarn is wound around a bobbin. This bobbin 5 is fitted and held in the bobbin holder 6. In the illustrated example, a motor rotor 15 is fixed to one end shaft portion of the bobbin holder, and the motor rotor 15, that is, the bobbin holder 6, is rotationally driven by a motor stator 14 supported within the casing 7a. Also in this motor 7, bearings 13 and 16 are naturally interposed between the casing 7a and the end shaft of the bobbin holder 6.

In the conventional high-speed winding machine that adopts the above configuration,
To explain its operation, the yarn wound around the bobbin 5 is always fed at a constant speed. When the bobbin drive motor 7 winds the yarn around the bobbin 5 at a constant rotation speed, if the diameter of the wound yarn 4 increases,
Since the circumferential speed also increases proportionally, it becomes impossible to cut the thread fed at a constant speed and wind it around the bobbin 5.

Therefore, in order to wind the yarn around the bobbin 5 at a constant speed, it is necessary to control the speed of the bobbin drive motor 7 according to changes in the diameter of the yarn.

In order to control the bobbin drive motor 7, the Tatsuchi Roll 1 is brought into contact with the outer diameter of the wound yarn 4, the Tatsuchi Roll 1 is rotated by the frictional force, and this rotational speed is detected by a detection device (not shown). The rotational speed of the bobbin drive motor 7 is controlled so that the yarn fed at a constant speed is wound around the bobbin 5 at a constant circumferential speed.

By the way, as mentioned above, the speed of winding machines has increased significantly recently (over 6000 m/min), and as the speed increases, the life of the bearings in the rotating parts is becoming shorter. As the surrounding areas become hot, various problems have arisen.

Looking at this for Tatsuchiroll 1, we can see that the temperature of Tatsuchiroll 1 increases locally.
Since a uniform temperature cannot be obtained over the entire length of the yarn 4, the quality of the wound yarn 4 is adversely affected. Furthermore, when balancing the rotation of the Tatsuchi Roll 1, the conventional structure attempts to eliminate the unbalance at the end portion 1a or 1b, which has disadvantages such as creating unbalance and vibration during high-speed operation. It was hot.

Next, looking at bobbin drive motors, the motor capacity generally needs to increase in proportion to the third power of the speed, and the amount of heat generated in the bearing increases in proportion to the second to third power of the speed. It is something. As a result, with the conventional structure, as the speed increases, the amount of heat generated by the motor increases, so the heat dissipation area of the motor needs to be increased, which means that the winder itself becomes larger, and the amount of heat generated by the bearings increases. This made it impossible to increase the rotational speed, and conversely, if the bearings were made smaller to reduce heat generation, the critical speed decreased, and the rotational speed could not be increased.

(Problems to be solved by the invention) As described above, in the conventional winding device of this type,
As the speed increases, the rotating parts become more fatigued and generate high heat. For example, in the case of Tatsuchi Roll, localized high temperatures can adversely affect the yarn quality, and in the case of the bobbin drive motor, the high temperature increases, so the capacity must be increased and the size increased. There were problems such as having no choice but to do so.

The present invention was devised to solve these problems, and is designed to minimize heat generation in the rotating parts and sufficiently withstand the high speeds of the winding machine.

(Means for solving the problem) Therefore, in the present invention, the Tatsuchi Roll is brought into contact with a wound ball such as yarn, the surface speed of the wound ball is detected, and the rotational speed of the drive motor for the wound ball is detected. In a high-speed winding machine that winds yarn, etc. at a constant speed, the bearing of the Tatsuchi roll that rotates at high speed is a fluid bearing, and a drive motor is installed directly on the shaft of the winding bobbin, and the outer periphery of the winding machine is equipped with a fluid bearing. The drive motor is miniaturized by providing a jacket through which fluid flows, and this is used as a means to solve the problem.

(Function) High-speed winding in which the tatsuchi roll is brought into contact with a wound ball of yarn, etc., the surface speed of the wound ball is detected, and the yarn, etc. is wound at a constant speed while detecting the rotational speed of the drive motor for the wound ball. By using a fluid bearing for the Tatsuchi Roll bearing that rotates at high speed in the removal machine, compared to conventional ball bearings, local heat generation can be suppressed and the temperature distribution on the Tatsuchi Roll surface can be made more uniform. You can save time and effort. In addition, by providing a jacket that allows fluid such as water to flow around the outer periphery of the drive motor, which is installed directly on the shaft of the winding bobbin, the drive motor can be made smaller compared to conventional air cooling systems, and the overall machine Can be made compact.

(Example) Hereinafter, an example of the present invention will be described based on the drawings, taking a touch roll and a bobbin driving motor of a winding machine as an example.

First, referring to Tatsuchiroll, FIG. 1 shows a cross section of the Tatsuchiroll part according to this embodiment.
Reference numeral 1 is a hollow cylindrical tatsuchi roll, and step portions are formed on the inner peripheral surface of both ends of the tatsuchi roll 1.
This stepped portion is installed opposite to the collar portion of the sleeve-shaped bearing 8. Reference numeral 10 denotes a tutti roll shaft. The tutti roll shaft 10 has a communication hole bored along its central axis through which compressed air 12 is sent from one end, and both ends of the tutti roll shaft 10 are fixed to the bracket 3.

The Tatsuchiroll 1 is supported by the Tatsuchiroll shaft 10 via the bearing 8.

By the way, the two bearings 8 of the Tatsuchi Roll shaft 10
Two O-ring grooves are formed on the opposing circumferential surfaces of each, and an O-ring 9 is fitted into these grooves, so that the Tatsuchi Roll shaft 10 and the bearing 8 are tightly fitted through the O-ring 9. There is. The cylindrical part of the bearing 8 has many bearing pores 8a extending from the inner diameter part to the outer diameter part.
is drilled therein, and a pore communicating with the communication hole for the compressed air 12 is also bored in the circumferential portion of the tatsuchi roll 10 facing the bearing 8. Note that an O-ring is also interposed between the bracket 3 and the side portion of the bearing 8.

4 is a yarn, 5 is a bobbin, 6 is a bobbin holder, 7
is a bobbin drive motor, and these parts are the same as those of the conventional one.

Next, the operation of the Tatsuchiroll section constructed as described above will be described. Compressed air 12 enters the inner surface of the bearing 8 through the compressed air circulation hole of the Tatsuchiroll shaft 10 and further through the pores. At this time, since the gap formed between the shaft 10 and the bearing 8 is sealed by the O-ring 9, the compressed air 12 is prevented from leaking to the outside from the side thereof. There is.

Therefore, this compressed air 12 flows through the pores 8a of the bearing 8.
, and is ejected into the gap 11 formed between the bearing 8 and the Tatsuchi Roll 1. Due to the force of the compressed air blown out, the Tatsuchi Roll 1 is released from the bearing 8, and the air acts as a bearing.

In this way, since the tatsuchi roll 1 is suspended by the compressed air force, no unreasonable force is applied to the bearing, and the bearing is always cooled by the compressed air, so that no temperature rise occurs. Furthermore, the resistance is lower than that of conventional bearings, and lubrication is not required.

Furthermore, the dynamic unbalance of the Tatsuchi Roll 1 can be easily resolved by cutting the inner surface of the Tatsu Roll 1.

Next, a present embodiment of the bobbin driving motor will be described.

FIG. 2 shows a cross section of the bobbin drive motor of this embodiment, and in the illustrated example, a jacket 17 is provided within the casing 7a.

In this example, as shown by arrow 12a in the figure,
Cooling water or other suitable cooling medium is supplied to the jacket 17.
The motor inner bearing 1 inside the casing 7a
3. It attempts to actively cool the motor stator 14, motor rotor 15, etc. Note that other members in the figure are the same as those of the conventional device shown in FIG. 4, so their explanation will be omitted here.

(Effects of the invention) As explained in detail above, the present invention detects the surface speed of the wound ball such as yarn by bringing the Tatsuchi roll into contact with the wound ball, and detects the rotational speed of the drive motor for the wound ball. In high-speed winding machines that wind yarn, etc. at a constant speed, air bearings are used for the high-speed rotating Tatsuchi Roll bearings, which suppresses local heat generation and improves Tatsuchi Roll surface temperature distribution compared to conventional ball bearings. It can be made more uniform. If the surface temperature of Tatsuchiroll is uneven, the quality of the thread will be uneven. That is, when the yarn is made of a polymeric substance, the quality of the yarn is uneven, which causes uneven dyeing properties, resulting in a defect that the yarn becomes mottled. However, in the case of the present invention, since the surface temperature distribution of Tatsuti Roll is uniform, the above-mentioned drawbacks do not occur at all. Furthermore, it is possible to eliminate the trouble of refueling, etc., and at the same time, the trouble of replacing bearings can be eliminated. Furthermore, a jacket is provided around the outer periphery of the drive motor, which is installed directly on the shaft of the winding bobbin, to allow fluid such as water to flow.Compared to conventional air cooling systems, the drive motor can be made smaller, and the overall machine can be made compact.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a high-speed winding machine showing an embodiment of the present invention, Fig. 2 is a detailed sectional view of the bobbin drive motor in Fig. 1, and Fig. 3 is an example of a conventional high-speed winding machine. FIG. 4 is a detailed sectional view of the bobbin drive motor in FIG. 3. Explanation of the main parts of the diagram, 1...Tatsuchiroll, 4
... Yarn, 5 ... Bobbin, 7 ... Bobbin drive motor, 8 ... Bearing, 12 ... Compression roll, 12a
...Cooling medium, 17...Jacket.

Claims (1)

[Scope of utility model registration request] In a high-speed winding machine that brings a Tatsuchi roll into contact with a wound ball of yarn, detects the surface speed of the wound ball, and winds the yarn at a constant speed while detecting the rotational speed of the drive motor for the wound ball. , a high-speed winding machine characterized in that the bearing of the high-speed rotating Tatsuchi roll is an air bearing, a drive motor is installed directly on the shaft of the winding bobbin, and a jacket is provided on the outer periphery of the winding ball for flowing a fluid such as water. .