JPH0543132A - Winding control method for filament body - Google Patents

Abstract

PURPOSE:To wind a filament body while adjusting it properly and highly accurately without adjusting tensile force of the filament body excessively even if linear velocity of the filament body is changed. CONSTITUTION:A variable speed motor 30 is connected through a powder clutch 28 to a wire wheel 34 to energize a dancer roll 14 of an accumulator 20 in the linear direction by means of a weight 24, and rotational speed of this variable speed motor 30 is varied to linear velocity of a filament body 12. Tensile force of the filament body 12 is set by voltage impressed upon the powder clutch 28 and mass of the weight, and since a speed of the variable speed motor 30 is also adjusted while following up the linear velocity of the filament body 12, the tensile force of the filament body 12 can be adjusted properly without adjusting it excessively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a winding control method of a linear body used for winding a linear body such as a plastic foam sheet with a predetermined tension.

[0002]

2. Description of the Related Art For example, a linear member such as a plastic foam sheet has a thickness of 3 to 15 mm and a linear velocity of 2.
Since there is a width of 5 to 25 m / min, in order to control the tension at the time of winding with high accuracy, the control speed of the accumulator as well as the tension of the filament is important.

The conventional winding control method for a linear body uses an accumulator consisting of a fixed roll and a dancer roll, and the dancer roll of this accumulator is set in position by a pendulum weight. Therefore, in this conventional winding control method, the tension is set by adjusting the mass of the weight attached to the free end of the wire wound around the wire wheel to raise and lower the dancer roll. However, since the tension is set only by the weight by changing the mass of the weight, it is necessary to change the weight frequently, so that the workability is low. For this reason, it has been attempted to adjust the tension of the filamentous body by a motor connected through a powder clutch to a wire wheel around which a wire for raising and lowering the dancer roll is wound (for example, JP-A-54-144549). See the bulletin).

[0004]

In the powder clutch type accumulator of the prior art, the tension is adjusted by varying the voltage applied to the powder clutch. As mentioned above, when winding a linear member such as a plastic foam sheet whose linear velocity changes greatly, it is required to change the speed of changing the position of the dancer roll according to the change in linear velocity. It However, since the linear velocity of the filament increases and the rising speed of the dancer roll is increased, the slip of the powder clutch decreases when the applied voltage of the powder clutch is increased, and the tension of the filament becomes excessively large. was there.

An object of the present invention is to avoid the above-mentioned drawbacks, and to adjust the tension of the filamentous body appropriately with high accuracy without excessively changing the tension of the filamentous body even if the linear velocity of the filamentous body changes. It is to provide a method of controlling winding of a strip.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention uses an accumulator comprising a dancer means through which a filament to be wound passes and an elevating and lowering drive means for elevating and lowering the dancer means. In the winding control method of the linear body for winding the linear body with a predetermined tension, in addition to the rotary lifting mechanism including a weight as a lifting drive means for urging the dancer means in the storage line direction, A variable-speed motor connected through a powder clutch is used, and the variable-speed motor is varied in accordance with the linear speed of the linear body, and a winding control method for the linear body is provided.

[0007]

When the variable speed motor is connected through the powder clutch to the rotary elevating mechanism for urging the dancer means with the weight in the storage line direction, and the variable speed motor is varied in accordance with the linear speed of the filament, the tension is reduced. It is set by the voltage applied to the powder clutch and the mass of the weight, but by adjusting the speed of the variable speed motor by following the linear speed of the filament, the tension can be adjusted with high accuracy without excessive adjustment. It can be adjusted appropriately.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described in detail. FIG. 1 shows a winding control device 10 used in a method for controlling winding of a filament according to the present invention. Device 10
Is composed of a dancer roll (dancer means) 14 through which the filament 12 to be wound up by a winder (not shown) passes through, a pair of fixed rolls 16 and 18, and an elevating drive means 20 for elevating the dancer roll 14. An accumulator 22 is provided. The dancer roll 14 is supported so that it can be raised and lowered by a not-shown raising and lowering guide means.

The elevating drive means 20 includes a rotating elevating mechanism 2 including a weight 24 for urging the dancer roll 14 in the storage line direction.
6 and a variable speed motor 30 connected to the rotary lifting mechanism 26 via a powder clutch 28. The rotary lifting mechanism 26 comprises a wire wheel 34 on which a wire 32 connected to the dancer roll 14 is wound,
The weight 24 is suspended at the free end of the wire 32. The powder clutch 28 has a rotary lifting mechanism 26.
Of the variable speed motor 30 is transmitted to the wire wheel 34 of the rotary elevating mechanism 26 by a predetermined slip according to the applied voltage. The voltage applied to the powder clutch 28 is set according to the set tension of the filament body 12, and the rotation speed of the variable speed motor 30 is adjusted by following the linear velocity of the filament body 12. Therefore, the set tension is input to the controller (not shown), and the linear velocity of the linear body 12 is input from the linear velocity detector that detects the linear velocity of the linear body 12.

Next, the winding control method of the filamentous body of the present invention will be described in detail. It is assumed that the filament 12 is a plastic foam sheet that is wound in a tension range of 5 to 15 kg and a linear velocity range of 2.5 to 25 m / min. When the foamed sheet is wound at a constant tension and a linear velocity, the dancer roll 14 includes the weight of the weight 24 and the powder clutch 28.
The linear body 12 according to the slip determined by the voltage applied to
However, when the tension of the filamentous body 12 changes, the tension of the filamentous body 12 is varied by changing the position of the dancer roll 14 according to the mass of the weight 24 and the slip of the powder clutch 28. Is kept constant.

On the other hand, when the linear velocity of the linear body 12 changes, this linear velocity change is input to the controller and the rotational speed of the variable speed motor 30 changes following the linear velocity of the linear body 12. In this case, it is necessary to keep the voltage applied to the powder clutch 28 constant. By doing so, the tension of the filament 12 can be adjusted at a high speed in accordance with the linear velocity of the filament 12. If the linear velocity of the filamentous body 12 becomes high and the applied voltage of the powder clutch 28 is increased to try to increase the rise speed of the dancer roll, the tension of the filamentous body 12 becomes too high, which is preferable. Absent. When the linear velocity of the linear body 12 becomes high, the tension of the linear body 12 does not become too high if the rotation speed of the variable speed motor 30 is increased while the applied voltage of the powder clutch 28 is kept constant. ,
The tension of the filament 12 can be adjusted with high accuracy.

When the linear member 12 is passed through the apparatus, the variable speed motor 30 is rotated in the reverse direction so that the dancer roll 14 passes between the fixed rolls 16 and 18 and these fixed rolls 16 and 18 are passed. Be positioned below. In this way, the filament 12 is fixed to the upper position of the fixed rolls 16, 1
8 and the dancer roll 14 at the lower position can be passed through without being interfered by these rolls.

[0013]

According to the present invention, as described above, the variable speed motor is connected via the powder clutch to the rotary elevating mechanism for urging the dancer means with the weight in the storage line direction. Since it is variable according to the linear speed of the linear body, the tension of the linear body is set by the voltage applied to the powder clutch and the mass of the weight. Since the speed is adjusted, there is a practical benefit that the tension of the filamentous body can be properly adjusted with high accuracy without being excessively adjusted.

[Brief description of drawings]

FIG. 1 is a schematic system diagram of an apparatus used in a method for controlling the winding of a filament according to the present invention.

[Explanation of symbols]

 Reference numeral 10 winding control device for linear body 12 linear body 14 dancer roll 16 fixed roll 18 fixed roll 20 lifting drive means 22 accumulator 24 weight 26 lifting drive means 28 powder clutch 30 variable speed motor 32 wire 34 wire wheel

Claims (1)

[Claims] 1. A filament winding device for winding the filament with a predetermined tension through an accumulator comprising a dancer means through which a filament to be wound passes and an elevating drive means for elevating the dancer means. In the intake control method, a variable speed motor connected to the rotary elevating mechanism via a powder clutch is used outside the rotary elevating mechanism including a weight that urges the dancer means in the line direction as the elevating driving means. A winding control method for a filament, wherein the variable speed motor is varied according to the linear velocity of the filament.