JPH10194591A - Cooling device for control panel of spinning winder - Google Patents

Abstract

(57) [Problem] To provide a cooling device for a control panel of a spinning winder which is small and has good durability. [PROBLEMS] A cooling device 1 includes a cooling fin 10 and a cooling fan 11. The heat generated during normal operation is cooled only by the natural heat radiation of the cooling fins 10, and the cooling fan 11 is used for heat generated when the spindle motors 8, 9 and the turret 7 are rotated in excess of the load during normal operation. The cooling fins 10 are activated to increase the heat radiation capability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for cooling a control panel of a spinning winder that winds a continuously spun yarn to generate heat.

[0002]

2. Description of the Related Art A conventional control panel is provided with an inverter circuit inside the control panel for controlling a spindle motor and the like used when winding a yarn, and the inverter circuit has a diode for converting AC to DC. A module and an intelligent module (IPM) for converting a direct current converted by the diode module into an alternating current of an arbitrary voltage and frequency are provided and generate about 100 Wh of heat. In order to protect the components used inside from the heat generated by this control panel, a cooling device equipped with a large number of aluminum radiating fins is provided as a cooling device, and the cooling fins include diode modules and intelligent modules. To transfer the heat to the cooling fins,
Furthermore, cooling was performed by naturally radiating heat from the radiating fins to the atmosphere.

[0003] In order to cool the heat generated by the control device by self-cooling, the size of the cooling fins can be cooled even when the maximum heat is generated under the worst conditions except when an abnormality occurs in the spinning winder. And the cooling fins were large.

[0004]

In recent years, high-speed winding has been performed on a spinning winder, which has increased the heat generation and increased the size of the cooling fins.
However, even if the cooling fin is large, the material of the cooling fin itself has resistance, and the heat does not diffuse evenly to the tip of the large fin. Stagnation, so that the cooling performance was not very good despite the large size of the cooling fins.

[0005] As a method of cooling the control panel, a method of forcibly cooling the control panel by continuing to rotate the cooling fan may be considered in addition to the self-cooling by the cooling fins. In a current spinning winder driven by an inverter, since the capacity of the inverter is large, it is desirable to use a cooling fan that is small in size and weight and inexpensive as compared with commonly used aluminum cooling fins. However, since the take-up winder is installed in an oil atmosphere containing a surfactant, when outside air is introduced into the control panel, not only the electric circuit is affected by the oil, but the oil dissolves grease and cools. Since the wear of the bearing used for the rotating shaft of the fan is accelerated, its life is shortened, and there has been a problem that it is necessary to replace parts of the cooling fan within a period shorter than the life of the spinning winder. The spinning winder is a machine that winds a continuously spun yarn.To exchange parts, it is necessary to stop the yarn from the device that spins the most upstream yarn. Therefore, the current cooling device of the inverter in the control panel is only a large cooling fin.

[0006] The present invention has been made by focusing on such problems existing in the prior art. The challenge is
An object of the present invention is to provide a small and durable cooling device for a control panel of a spinning winder.

[0007]

According to the first aspect of the present invention, there is provided a fin for cooling a control panel, load detecting means for the control panel, and a fin coupled to the load detection. A fan that forcibly cools the cooling fins, and sets the cooling fins to a size corresponding to heat generation during a steady operation that drives one spindle of the spinning winder; and The cooling fan is operated when the load during the normal operation is exceeded.

In the invention according to the second aspect, the load detecting means is constituted by a thermo sensor for detecting heat generation of the cooling fin, and detects heat generation of the cooling fin during abnormal operation to take up the yarn. Also serves as a thermo sensor to stop the machine. According to a third aspect of the present invention, the load detecting means is a doff command detecting device for simultaneously driving two spindles for switching the spindle position.

Therefore, according to the first aspect of the present invention, the fins are forcibly forced by the cooling fan only when the load detecting means detects a load exceeding a normal load when the yarn is wound on the bobbin by one spindle. It works to cool and enhance the heat dissipation capacity of the cooling fins. The invention according to claim 2 uses a thermosensor that is a protection device during abnormal operation, which is used as a safety measure in a conventional spinning winder, to increase a load exceeding the load during normal operation, It works to detect by the temperature rise of the cooling fin. According to the third aspect of the present invention, the cooling fan always operates during the doffing operation for simultaneously driving the two spindles.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall view of a spinning winder in which the cooling device of the present embodiment is used, and FIG. 2 is a perspective view of a main part of a control panel in which the cooling device of the present embodiment is used. FIG. 3 is an explanatory diagram showing the operation timing of the cooling fan, and FIG. 4 is a flowchart for controlling the operation of the cooling fan.

First, the outline of the spinning winder 3 using the cooling device of the present embodiment will be described. The spinning winder 3 includes spindles 4 and 5 for continuously winding the yarn spun from the upstream to form a winding package P, and spindles 4 and 5.
, A turret 7 for exchanging positions of the spindles 4, 5, a touch roller 6, a pulse oscillator 16 for measuring the number of revolutions of the touch roller 6, the control panel 2, The control panel 2 calculates the yarn speed based on the rotation speed of the pulse oscillator 16 to control the rotation speed of the spindle motors 8 and 9. Assuming that the vertically upper spindle is 4, the yarn is wound by the spindle 4, and when a predetermined time has elapsed and the package P is fully wound, the turret 7 is rotated by a driving device (not shown), and the winding position is changed. And the spindle 5 in the standby position is turned upside down so that the yarn of the full package P is replaced with the spindle 5 so that the continuously spun yarn is continuously wound by the spindle 5. It has become.

An inverter circuit 14 is used to control the rotation of the spindle motors 8, 9 and the turret 7,
A diode module 12 that is provided inside a control panel 2 that is openably and closably connected to the main body of the spinning winder 1 and that converts AC to DC,
An intelligent module (IPM) 13 and the like for converting the DC converted in 2 into an AC having an arbitrary voltage and frequency are provided. Since the diode module 12 and the intelligent module 13 generate heat, the cooling device 1
To protect the internal components such as the diode module 12 and the intelligent module 13 from heat generation.

As shown in FIG. 2, the cooling device 1 includes a cooling fin 10 and a cooling fan 11, and the cooling fin 10
Is composed of a radiating fin 17 which is a protruding plate material, and a base member 18 on which the radiating fin 17 is provided.
Heat-generating components such as the diode module 12 and the intelligent module 13 are fixed to the surface of the base member 18 opposite to the surface on which the heat radiating fins 17 are provided, and the heat is transferred from the base member 18 to the heat radiating fins 17. Heat is radiated naturally from the surface of the radiation fins 17.
The base member 18 is provided with a thermo sensor (not shown) as an example of a load detecting unit, and the temperature of the cooling fin 10 becomes higher as the temperature of the cooling fin 10 exceeds the heat generated in the case of a maximum load due to an abnormality of the machine base. An abnormal temperature H2 and a predetermined temperature H1 described later.
Is detected. Also, the cooling fan 11
The cooling fan 11 is provided vertically below the radiating fins 17 so that warm air staying around the radiating fins 17 is caused to flow by driving the cooling fan 11 so that the heat radiating ability of the cooling fins 10 can be improved.

The cooling fins 10 are provided on the control panel 2 such that only the radiation fins 17 and a part of the surface of the base member 18 protrude out of the control panel 2, thereby increasing the confidentiality inside the control panel 2. A base (not shown) provided inside the control panel 2;
The tire module 12, the intelligent module 13, and the like are protected from an oily atmosphere containing a surfactant in a spinning factory. Further, the control panel 2 protects the inside from the outside oil agent atmosphere by increasing the inside air pressure. The thermosensor also serves as the one conventionally provided for stopping the machine base when the radiation fin 17 has an abnormal temperature. For this reason,
By using the existing configuration, the cooling device 1 can be simplified.

Next, based on FIG.
And the operation cycle of the take-up winder 3 will be described. 3A shows a change in the rotation speed of one spindle 5, FIG. 3B shows a change in the rotation speed of the other spindle 4, and FIG. 3C shows a value representing the load of the inverter circuit 14, that is, both spindles 4. And FIG. 5 is an explanatory diagram showing a time-series value obtained by adding the number of rotations. Spindle 4 or 5
Is a cycle in which the speed is increased to a rotation speed M for receiving the yarn, and then gradually reduced to a steady rotation speed for winding, the winding is continued, and when the full winding is reached, the brake is actuated and stopped. Follow. As shown in FIG. 3, the two spindles 4 and 5 are operated alternately while partially overlapping, and the rotation of the other spindle 4 is started at a time t1 before one of the spindles 5 reaches the full winding. , One spindle 5
By the time t2 when is fully wound, the other spindle 4 reaches the receiving rotation speed M. At this time t2, the spindles 4, 5
Start of the vertical position exchange, and at the time point t3, the automatic thread transfer is completed.
At four points, the rotation stops, and the other spindle 4 decelerates to a steady rotation speed and continues winding.

Overlap time T for thread transfer
1 is about 1 to 2 minutes, while the winding time T2 is about 2 to 3 hours. Conventionally, this overlap time T1
The size of the cooling fin 10 is set so as to meet the load of the cooling fin 10. On the other hand, the present inventor has found that the load of the inverter circuit 14 during the winding time T2 is about 50 to 60 of the maximum load.
%, And that the overlap time T1 is extremely shorter than the winding time T2. An inexpensive cooling fan 11 can be used as long as the rotation is for a short time even in the oil agent atmosphere of a spinning factory. Therefore, cooling fin 1
The size of 0 is set to a size corresponding to the load of the steady rotation speed in the winding time T2, and the heat generated by the load exceeding the load is radiated with the help of the cooling fan 11. Specifically, the above-mentioned predetermined temperature H1 is set to a temperature slightly higher than the temperature at the time of operation at a load of a steady rotation speed, and the spinning winder 3 rotates the spindles 4, 5 for doffing operation. The cooling fan 11 is operated only during the overlap operation to increase the heat radiation capability of the cooling fins 10.

The control of the cooling fan 11 will be described with reference to the flowchart of FIG. The thermosensor measures the temperature of the cooling fin 10 at a constant timing. The heat generated by the driving load during the winding time T2 is
Can be cooled by natural heat radiation, so that the measured temperature X falls within the predetermined temperature H1 during the winding time T2 unless a winding abnormality occurs.
Never exceed. Therefore, the cooling fan 11 remains stopped. Winding progresses and overlap time T1
Is reached, the measured temperature X of the thermosensor becomes a predetermined temperature H due to the load that drives the two spindles 4 and 5 simultaneously.
Becomes more than one. The measured temperature X is compared with the predetermined temperature H1, and when the measured temperature X exceeds the predetermined temperature H1, the control panel 2 energizes the cooling fan 11 to operate the cooling fan 11 to forcibly cool the cooling fins 10. If the measurement temperature X of the thermosensor continues to further increase due to some winding abnormality and reaches an abnormal temperature H2 exceeding the temperature corresponding to the load at the time of the overlap time T1, an operation abnormality is detected. Considering that, the control panel 2 causes the spinning winder 1 to stop immediately.

The present invention may be embodied as follows. In the present embodiment, two cooling fans 11 are provided in order to reduce the size of the cooling fan 11 and efficiently cool it. However, one cooling fan 11 large enough to cool the cooling fins 11 is provided. Radiation fins 17
May be cooled. The control panel 2 of the spinning winder 1 is connected to the main part of the spinning winder 1 and can be freely opened and closed. However, several spinning winders 1 are controlled by one control panel 2. You may do it. For efficient cooling, thermosensors are provided on the radiating fins 17 near the diode module 12 and the radiating fins 17 near the intelligent module 13, respectively. The temperature may be sensed by each of the thermosensors and cooled by separate cooling fans 11. The temperature of the cooling fins 10 fluctuates depending on operating conditions such as the number of revolutions of the spindle motors 8 and 9 and the air temperature in the factory. Further, in the above-described embodiment, an example of the thermo sensor is shown as the load detecting means of the control panel 2. However, a doff command detecting device for simultaneously driving the two spindles 4 and 5 for replacing the spindle position is described. It may be a load detecting means. Specifically, it is conceivable to create a program to automatically drive the cooling fan 11 as one of the doffing procedures when the overlap time T1 is reached.

[0019]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, the heat radiated from the cooling fins does not stay in the fins and does not hinder new heat radiation, and the heat is reliably radiated from the cooling fins. There is no need for a heat radiation area corresponding to overload. Therefore, as compared with the structure of the conventional spinning winder, which uses large cooling fins with respect to the size of the entire control panel so as to withstand the doffing operation in which two spindles are simultaneously driven. In addition, the entire apparatus including the cooling fan can be reduced in size and weight, and can be configured at a low cost. In addition, the performance of the cooling fins by self-cooling is used to the maximum, and the cooling fan is used only when cooling by the self-cooling of the cooling fins alone is not enough. Slows down the wear of the bearings used on the rotating shafts. For this reason, the life of the cooling fan and the life of the cooling device 1 are prolonged even when used in an oil atmosphere. As a result, a small and durable cooling device for the control panel of the spinning winder could be provided.

According to the second aspect of the present invention, the cooling device can be simplified by using the existing configuration by also using the thermosensor conventionally used. According to the third aspect of the present invention, since the cooling fan is automatically driven as one of the doffing procedures, the control loop for monitoring the temperature as in the first aspect is unnecessary, and the control can be easily performed. .

[Brief description of the drawings]

FIG. 1 is an overall view of a spinning winder in which a cooling device of the present embodiment is used.

FIG. 2 is a perspective view of a main part of a control panel in which the cooling device of the present embodiment is used.

FIG. 3 is a diagram showing a relationship between an operation timing of a cooling fan and an operation cycle of the spinning winder.

FIG. 4 is a flowchart for controlling the operation of a cooling fan.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling apparatus 2 Control board 3 Spinning winder 4,5 Spindle 8,9 Spindle motor 10 Cooling fin 11 Cooling fan

Claims (3)

[Claims] The spindle at the winding position and the spindle at the standby position are replaced each time the bobbin at the winding position becomes full, and the yarn is automatically switched from a full bobbin to an empty bobbin. In a cooling device for a control panel of a take-up winder that continuously winds, a fin that cools the control panel, a load detection unit of the control panel, and a fan that forcibly cools the cooling fin in conjunction with the load detection The cooling fins are set to a size corresponding to the heat generated during the steady operation for driving one spindle of the spinning winder, and the load detecting means exceeds the load during the steady operation. A cooling device for a control panel of a take-up winder configured to activate the cooling fan in such a case. 2. The load detecting means is a thermosensor for detecting heat generation of the cooling fins, and also serves as a thermosensor for detecting heat generation of the cooling fins during abnormal operation and stopping the spinning winder. The cooling device for a control panel of a spinning winder according to claim 1. 3. The cooling device for a control panel of a spinning winder according to claim 1, wherein said load detecting means is a detecting device for a doffing command for simultaneously driving two spindles for replacing the spindle position.