JPH0649541B2 - Winding device for film-like materials - Google Patents

Description

TECHNICAL FIELD The present invention relates to a winding device for a thin strip of plastic film or the like.

(Prior Art) FIGS. 5 and 6 show an example of a conventional winding device. In the figure, 1 is a mill roll for winding a strip 7 (hereinafter referred to as a strip) such as a plastic film into a roll, which is usually wound up to an outer diameter of about 1000 to 1200 mm. A core is attached to the center, which is generally made of iron, and a paper tube or the like is used for winding a lightweight product.

Reference numeral 2 denotes a press roll, which prevents winding deviation, wrinkles, unevenness, etc. of the strip 7 when the strip 7 is wound on the winding core, and at the same time adjusts the amount of air entrained between the films so that the strip 7 can be preliminarily set There is a function of weakening the pushing pressure as the mill roll 1 is rolled up and thickened by pushing at the set pressure. The material of the press roll is generally a rubber roll.

Numeral 3 is a proximity roll for improving the winding shape of the strip 7 (roll misalignment, wrinkle, unevenness prevention), so that the mill roll 1 and the strip 7
It is devised so that the winding angle of is constant, and moves as the mill roll 1 becomes thicker. Further, 4 is a guide roll, which is a roll for guiding the belt-like material 7, and is often a plating roll. Reference numerals 5 and 5a are roll position adjusting devices for adjusting or controlling the pressing pressure of the presser roll 2 and the position of the proximity roll 3, respectively, and the numerical values designated from the outside can be freely adjusted. , Solenoid valve, pressure reducing valve, etc. Reference numerals 6 and 6a are air cylinders for adjusting the pressing pressure of the presser roll 2 or the position of the adjacent rolls 3, and the air pressure output from the roll position adjusting devices 5 and 5a is as specified in advance. Make a move.

Here, in FIGS. 5 and 6, when the strip 1 such as a plastic film is wound into a roll, there is no winding deviation, there is no unevenness, and there is no vertical wrinkle or horizontal wrinkle. It is very important that the surface of the film is not scratched and that the film is wound with a predetermined tension.

For this reason, it is important to reduce the thickness and unevenness in the flow direction and width direction of the band-shaped material, but there is a limit to reducing this to a certain extent or less.

More specifically, FIG. 5 shows a combined use type of the press roll 2 and the proximity roll 3, and when winding the strip 7 around the winding core, at the same time as winding with a preset tension,
In order to solve the above-mentioned various problems, a press roll 2 is mounted on the film surface for winding while pressing it with a predetermined pressing force.

The proximity roll 3 is a mill roll 1 when the film is wound.
In order to keep the winding angle between the adjacent roll 3 and the adjacent roll 3 constant, the adjacent roll 3 is sequentially moved according to the winding thickness of the mill roll 1 to adjust the amount of air or the like to be included.

FIG. 6 shows the case where the presser roll 2 is mounted horizontally.

Now, in FIGS. 5 and 6, the strip 7 is left for 1 to 2 days in a thermostatic chamber set to a predetermined temperature after the winding is completed. This is to prevent the band-shaped material 7 from shrinking if it is used as a product immediately after winding without being sufficiently relaxed.

In the conventional winding method using the presser roll, the problem that often occurs as a problem is (a) winding with a very weak pressing pressure, but the weight of the presser roll or the surface rubber material Due to the hardness, it is difficult to wind it with a weak pressing force. In particular, as the width of the strip becomes wider, the weight of the roll increases, and it is difficult to adjust the winding with a weak pressing pressure.

(b) When the pressure of the presser roll is increased to wind the strip, the strip contracts while the strip is left for a long time, causing wrinkles and sticking between the films called blocking. Or it becomes unusable as a product due to the occurrence of bumps.

(c) When winding a strip into a roll, it is very easy to wind it hard, but since the drawbacks described in (b) above occur, it is generally necessary to wind it up softly. However, in this case, a large amount of air enters between the films to cause winding deviation. Further, in order to make a weak winding, the surface of the press roll is processed into a spiral shape, a grooved roll is adopted, or a cloth-like material is wound around the roll, but the cost is increased or Cloth-like dust may get inside the band and cause dirt. Even if the surface of the strip is pressed with a soft rubber material, the advance speed of the strip and the surface speed of the roll may be inconsistent with each other, and the surface of the strip may be scratched, resulting in a non-defective product.

Further, in the stretched film, after winding, the strip is contracted unless the mill roll is left in a thermostatic chamber for aging treatment. Therefore, it is necessary to perform the aging treatment for relaxing the band-shaped material in the greenhouse for 2-3 days.

(Problems to be Solved by the Invention) The present invention is intended to solve various problems in the conventional winding device for winding with a very weak pressing force.

(Means for Solving the Problems) For this reason, the present invention relates to a wind-up device for winding a band-shaped material such as a plastic film into a roll, in which hot air of adjusted air pressure is blown from the outside of the band-shaped material. Air blowing device, an air cylinder for driving the air blowing chamber so that the air blowing chamber can be moved toward and away from the mill roll in order to keep the gap l ₂ between the air blowing chamber and the mill roll constant, and an air blowing device for setting the position of the blowing chamber. From the chamber position adjusting device and the outflow air pressure setting dial that determines the pressing pressure of the pressurized air that presses the band-shaped material such as film against the mill roll, and the outflow air adjustment valve that sets the blowout pressure instructed by the setting dial. And an air pressure adjusting device, which serves as means for solving the problem.

(Working) When winding a strip of film or the like into a roll, hot air of adjusted air pressure is blown from the outside of the strip from the air blowing device, and the gap l ₂ between the air blowing chamber and the mill roll is kept constant. Aging for 2 to 3 days as a relaxation work for the strips by keeping the pressure on the strips against the mill roll and adjusting the pressure of the pressurized air that presses the strips to the mill roll to the blowing pressure indicated by the setting dial. No treatment is required, the shrinkage of the belt-like material is prevented, and a roll-like material having a good winding shape without unevenness, wrinkles, and scratches is obtained.

(Embodiment) The present invention will be described below with reference to embodiments of the drawings.
FIG. 2, FIG. 3, FIG. 3 and FIG. 4 show an embodiment of the present invention, but here only the points different from the conventional device of FIG. 5 and FIG. 6 will be explained.

In the figure, 10 is an air blowing chamber, which is installed outside the strip 7 wound around the mill roll 1 and blows air of uniform pressure in the width direction, and has a box-shaped chamber shape as shown in FIG. In addition, an air inflow pipe 15 and a rectifying plate 16 that rectifies the pressure air to make the outflow pressure constant in the width direction are provided inside. Further, a slit 17 having a width δ is provided at the tip, and the position of the main body can be changed as described later.

The air inflow pipe 15 is for injecting pressurized air, has an outflow hole on the side opposite to the blowing direction to the mill roll 1, and flows out so as to have a uniform pressure in the air blowing chamber 10. The rectifying plate 16 is a plate having holes for uniformly distributing the pressurized air discharged from the air inflow pipe 15 in the width direction. Further, the air outflow slit 17 is an outflow port of the compressed air distributed by the straightening plate 16, and the slit opening can be controlled by the slit width adjusting bolt 18.

Reference numeral 11 is an outflow air pressure setting dial, which determines the pressing pressure of the pressurized air that presses the strip 7 on the mill roll 1 when the strip 7 is wound around the mill roll 1. Initial pressure setting, final pressure setting, and taper setting. The setting dial 11 is used to perform all the steps (gradual increase or decrease of the setting of the pressure of the pressurized air from the initial pressure to the final pressure). Reference numeral 12 is an outflow air adjusting valve, which is a control valve for adjusting the blowout pressure instructed by the outflow air pressure setting dial 11.

Reference numeral 13 is a pressurized air producing apparatus, which is a source of pressurized air blown onto the strip 7, and may be a blower system as shown in FIG. 1 or may be stored. Further, 14 is a pressurized air blower pipe, which is a pipe connecting the pressurized air manufacturing apparatus 13 and the air blowing chamber 10.

Reference numeral 19 is a pressurized air accumulator, which is an air reservoir for storing blown air. Reference numeral 20 denotes a heat exchanger, which is a device for warming the air to be blown, and the heat source may be electricity, steam, oil combustion, or the like.

21 is an air blowing chamber position adjusting device, which is a mill roll 1
This is a device for keeping the position of the air blowing chamber 10 constant with respect to the air blowing chamber 10. The size of l ₂ in FIG. 3 is designated by the position setting dial 22 and the air cylinder 23 of the air blowing chamber 10.

Next, the operation will be described. When the strip 7 is wound into a roll, the strip is wound around the mill roll 1 in order to prevent misalignment, wrinkles, unevenness, scratches on the film surface, shrinkage of the film, and the like. Blow pressurized air or hot air to the outside of 7. Since the air pressure to be blown differs depending on the characteristics of the strip 7 to be wound up, it is instructed from the outside by the outflow air setting dial 11 and the outflow air pressure adjusting valve 12. Preferably, the blowing width l ₁ of the blowing air is designed to be narrower than the winding width L ₁ of the strip 7 to be wound.

The gap l ₂ between the winding strip 7 and the slit 17 and the width δ of the slit 17 are determined by the characteristics of the winding strip 7.
Air blowing chamber position adjusting device 21, air blowing chamber position setting dial 22, air cylinder 23 and adjusting bolt
Adjusted by 18 respectively. Also, the blowing angle can be freely adjusted as described above. This is also done depending on the characteristics of the strip to be wound. In Fig. 4, the winding direction is first.
An embodiment when different from the first embodiment in the figure is shown.

This as been described (Effect INVENTION) above in detail invention is constructed, with the outside of the web to blow the pressurized air hot, keeping the gap l ₂ between the air outlet chamber and mill rolls constant,
In addition, the aging process after winding the band-shaped material into the temperature-controlled room is unnecessary as the band-shaped material is relaxed by setting the pressure of the compressed air that presses the band-shaped material to the mill roll to the blowing pressure indicated by the setting dial. It is possible to prevent winding misalignment, wrinkles, surface irregularities, surface scratches, etc., and even if it is softly wound, it is possible to prevent deformation after winding the band-shaped material, and shrink the band-shaped material by blowing hot air. Can be prevented.

[Brief description of drawings]

FIG. 1 is a system diagram of a winding device showing an embodiment of the present invention,
FIG. 2 is a view taken in the direction of arrow II in FIG. 1, FIG. 3 is a detailed view of a part III in FIG. 1, and FIG. 4 is a system diagram of a winding device in an embodiment different from FIG. 1, FIG. FIG. 6 is a system diagram of a conventional strip winding device. Description of main parts of the figure 1 …… Mill roll, 7 …… Strips 10 …… Air blowing chamber, 11 …… Outflow air pressure setting dial 12 …… Outflow air pressure adjusting valve, 15 …… Air inflow pipe 16 …… Rectangular plate, 19 …… Pressure air accumulator 20 …… Heat exchanger, 21 …… Air blowing chamber position adjusting device

Claims (1)

[Claims] 1. A winding device for winding a strip-shaped material such as a plastic film in a roll shape, in which high-temperature air having an adjusted air pressure is blown from the outside of the strip-shaped material by an air-blowing chamber, the air-blowing chamber. and an air cylinder for driving the same air blowing chamber separable therefrom to maintain the gap l ₂ between mill rolls constant, become more air discharge chamber position adjusting device and a position setting dial the same outlet chamber, and a film like strip An outflow air pressure setting dial that determines the pressure of the pressurized air to be pressed against the mill roll, and an air pressure adjustment device that includes an outflow air adjustment valve for adjusting the blowout pressure instructed by the setting dial. A winding device for strips such as films.