JP2888223B2 - Individual holding roller device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a desired contact pressure by constantly contacting a pressing roller with the outer periphery of a winding roll formed on each winding core when many webs are wound on each winding core at the same time. The present invention relates to each individual holding roller device. Specifically, the present invention is, for example, in a slitter, when a multi-slit web is divided into two axes and wound simultaneously, or when a plurality of winding machines provided in two rows are wound simultaneously. The present invention mainly relates to individual press roller devices for preventing air from being trapped between winding layers and obtaining a neat winding shape.

[0002]

2. Description of the Related Art When a web such as a film is slit into multiple strips and wound around each core, each strip is wound with the same tension by friction drive or individual drive, but the web has uneven thickness. Due to the difference in the thickness, the winding diameter of each winding roll slightly differs. Therefore, as the pressing roller used for the purpose of preventing air from being trapped between the winding layers, an independent roller is used so that the pressing force acts independently for each winding strip.

[0003] As such an individual press roller device,
Each holding roller can be put on the take-up roll by its own weight, each holding roller is equipped with a weight or air cylinder, and the holding force can be adjusted by them, and a common swing that drives the support arm of each holding roller Conventionally, an air cylinder is used to apply the total swinging power to the shaft, the original swinging power is distributed to each support arm via a spring, and a slight difference in winding diameter is absorbed by the spring. Have been.

However, if the holding force is applied only by the weight of each holding roller, the holding force cannot be adjusted. If each holding roller is provided with a weight, not only a space for the weight is required but also the inertia is large. When the air cylinder is provided for each presser roller, the space and cost increase, and when changing the winding strip width, the support arm for changing the width of each presser roller is required. When the position is moved in the width direction of the winding strip, the processing of the air pipe and the like becomes troublesome.

Further, in the case where each support arm is driven by a common swing shaft via each spring, only one pressure can be applied to each support arm and the stroke of the spring is constant. That only a limited range of force within the limited range of deflection can be applied to each press roller. In this case, if a spring having a large spring constant is used, the range of press force that can be applied will be large, but each take-up roll Even if there is a slight difference between the winding diameters, the difference in the holding force is large, so that a uniform force cannot be obtained. In addition, there is a very serious problem that only the same force can be applied to each press roller.

[0006]

SUMMARY OF THE INVENTION In view of the above problems in the prior art, it is an object of the present invention to easily position the support arm of each press roller in the winding strip width direction when changing the winding strip width. It is an object of the present invention to provide a low-cost individual press roller device that can be easily moved, changed in width, replaced, and changed in number of the press rollers.

Further, another object of the present invention is to adjust the pressing force of each pressing roller to be smaller or larger than its own weight, etc., and to adjust the web width even when assembling and winding in which different winding strip widths are mixed. It is an object of the present invention to provide an individual pressing roller device that can obtain a desired force according to the above.

[0008]

SUMMARY OF THE INVENTION In the individual press roller device according to the present invention, the press roller is always brought into contact with the outer periphery of a winding roll formed on the winding core by winding the web to give a desired contact pressure. In each of the individual press roller devices as described above, a swing shaft that is arranged in the take-up strip width direction and is provided with a desired swing power, and an elastic tube fixed on the swing axis and disposed in the take-up strip width direction is provided. A first arm, a horizontal axis disposed at the leading end of the first arm in the width direction of the winding strip, and a settable position on the horizontal axis at an arbitrary position in the axial direction and rotatable about the axis. At least one pair of second arms provided and provided with a pressure receiving member that comes into contact with an elastic tube on the first arm, and a winding strip width rotatably corresponding to each core at the tip of the second arm of each set. Presser foot pivoted in the direction And air is supplied into the resilient tube on the first arm to apply a desired rotating power to the second arm of each set via the pressure receiving body. .

In the device having the above-mentioned structure, when a swinging power is applied to the swinging shaft and air pressure is supplied to the elastic tube, the swinging force is distributed to each set of the second arms via the first arm. Then, a desired pressing force against each winding roll is generated on each pressing roller, and a desired contact pressure acts on the outer periphery of the winding roll by contact with the pressing roller. In that case, the second arm of each set is individually powered by a resilient tube via a pressure receiver mounted on each of them, and the oscillating power is the second power of each set in response to the respective power. Distributed to arms. Further, a slight difference in winding diameter between the winding rolls is absorbed by deformation of the elastic tube.

[0010] In the above construction, two elastic tubes are provided on the first arm so as to exert forces on the respective pressure receiving members in directions opposite to each other, so that air pressure is supplied to each elastic tube. By adjusting, the pressing force of each pressing roller can be freely adjusted, for example, reduced or increased from its own weight.

In the above structure, the pressure receiving members of the second arms of each set have a width corresponding to the width of the winding strip. Force is applied. In addition, when each pressure receiving body in each second arm of each set has a constant width, the same force is applied to the second arms of each set from the elastic tube regardless of the winding width. Become.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a side view schematically showing the entire individual pressing roller device according to an embodiment of the present invention, FIG. 2 is a plan view of one end of each individual pressing roller device shown in FIG. 1, and FIG.
4 is a side view of a main part including a second arm portion of each individual pressing roller device shown in FIG. 1, and FIG. 5 is a second arm portion of each individual pressing roller device shown in FIG. It is a top view of the principal part containing.

In FIG. 1, webs 1 slit into multiple strips are individually wound on a winding core 3 via rollers 2 to form respective winding rolls 4. During the winding,
A pressing roller 5 is brought into contact with each of the winding rolls 4, and a pressing force that varies according to a desired constant value or a winding diameter is applied to each of the winding rolls 4.

As shown in FIG. 1, the web 1 passes along a path such that the web 1 is directly wound on each winding roll 4 irrespective of the winding rotation direction. In some cases, the web 1 is wound around each press roller 5 in a specific winding direction, and the web 1 is wound in a contact point between the web 1 and each winding roller 4.

Each press roller 5 rises by a circular motion about the swing shaft 6 in accordance with the growth of the winding diameter of each winding roll 4. A lever 7 is fixed to the swing shaft 6, and an air cylinder 8 is connected to the tip of the lever 7. The air cylinder 8 applies a torque corresponding to the total force of all the pressing rollers 5 to the swing shaft 6. Thus, a desired pressing force is applied to each winding roll 4 via each pressing roller 5.

2 and 3, the swing shaft 6 is rotatably supported by left and right frames 9 (only one side is shown) via a bearing 10, and the left and right frames 9 on the swing shaft 6 are supported. A pair of left and right first arms 11 are fixed near the inside with bolts 12, and between the first arms 11,
A square bar 13 and a horizontal shaft 14 are provided over substantially the entire width of the apparatus.

4 and 5, a large number of bosses 15 are fixed on the abscissa 14 at desired positions by knob screws 16, and both bosses 15 adjacent to each other at intervals according to the width of the winding strip.
A pair of left and right second arms 17 is incorporated in the upper part so as to be regulated in the axial direction and rotatable about the axis.

An L-shaped bracket 18 is screwed to the square bar 13 from above and below the entire width thereof, and a narrow gap 19 is opened in the front surface of the square bar 13 and a space 2 is provided therein.
0 is formed. In the space 20, a small-diameter resilient tube 21 and a slightly hard and slippery round belt 22 are sequentially placed over the entire width of the square bar 13 from the back side in a vertically symmetric manner.

A plate-shaped pressure receiving member 23 is detachably connected to the base ends of the pair of second arms 17 via a substrate 24. It is inserted between the round belts 22. Further, a pressing roller 5 is rotatably supported at the distal ends of the two second arms 17.

In the above apparatus, when changing the slit width, that is, the winding strip width, the pressing roller 5 is replaced with a roller having a different width, and the interval between the pair of second arms 17 is changed.
It is necessary to change the position and the number of sets. Therefore, in the illustrated embodiment, only a large number of bosses 15 are assembled from the beginning, and fitting portions of the bosses 15 with the second arms 17 are mounted on the bosses 15 so that the second arms 17 can be attached and detached as necessary. An opening 25 is formed at the base end of the second arm 17 so as to communicate with the fitting portion with the boss 15, the knob screw 16 is loosened and the knob screw 16 is tilted forward to lower the boss 15 by 90 degrees. By turning, the second arm 17 can be inserted and fitted into the boss 15 from the front, and if the boss 15 is returned to the original rotation position after the fitting, the second arm 17 will rotate. It is possible to prevent the boss 15 from slipping forward. Further, by loosening the knob screw 16, the boss 15 can be moved to a desired position along the horizontal axis 14, and after the boss 15 is moved, the knob screw 16 is tightened in accordance with the groove on the horizontal axis 14. For example, the boss 15 is fixed to the horizontal shaft 14 so as to be immovable in the axial direction and non-rotatable about the axis, so that the second arm 17 is rotatable about the axis at a desired position on the horizontal shaft 14. In addition, the boss 15 is held so as not to be able to be separated from the front.

As the pressure receiving member 23, one having a width corresponding to the width of the pressing roller 5 is prepared, and when the pressing roller 5 is replaced, the pressure receiving member 23 is replaced with the pressure receiving member 23 having a width corresponding to the width. become. The pressure receiving body 23 is
In particular, it is integrated with the thick substrate 24 by a method such as welding so that bending or twisting does not occur even when a large force is applied when the width is wide. Such a pressure receiver 23 is connected to the second arm 17.
Although various structures can be adopted as the means for fixing the pressure receiving member 23 to the round belt 2 in the illustrated embodiment.
2, the distance between the pair of left and right second arms 17 is reduced, and both ends of the substrate 24 are inserted into the cutouts 26 at the base end of each second arm 17. By fixing the interval, the pressure receiving member 23 can be connected to the second arm 1.
7 so that it does not come off.

The rocking shaft 6 and the square bar 13 are connected to each other at one or two places between the entire widths thereof by bolts 28,
29 and are fixed to each other, thereby increasing the rigidity of the entire device together with the first arm 11. In addition, the horizontal shaft 14 is supported by the square bar 13 at two or three places between the entire widths via an intermediate bearing 31 fixed to the square bar 13 with screws 30, whereby the horizontal shaft 14 is thin. In addition, the bending is prevented so that sufficient strength is maintained. The intermediate bearing 31 can be moved within a certain range. If the intermediate bearing 31 interferes with the boss 15, it can be moved and adjusted.

In each of the individual pressing roller devices configured as described above, when an arbitrary or constant air pressure is supplied to one or both of the two elastic tubes 21, the total pressing force by all the pressing rollers 5 is obtained. The air pressure supplied to the upper and lower chambers of the air cylinder 8 to determine the sum of the pressures, for example, the pressing force applied to the lower chamber, the force corresponding to the depressurizing force applied to the upper chamber, or the combined force of both, is applied to each pressing roller 5. Is applied to each winding roll 4, and a slight difference in winding diameter between the winding rolls 4 is absorbed by deformation of the elastic tube 21.

In the illustrated embodiment, the pressure receiving member 23 is wide in the width direction. However, the pressure receiving member 23 having a fixed width may be fixedly attached to each of the pair of second arms 17. In this case, the same pressing force can be applied to each winding roll 4 even if there is a difference in width between the pressing rollers 5. If the elastic tube 21 is supplied with an air pressure proportional to the air pressure of the original air cylinder 8 and proportional to the number of the pressing rollers 5, that is, an air pressure corresponding to the total pressing force, a large number of pressure receiving members 23 are provided. The balance is averaged in the middle of the gap 19, and a good effect can be obtained.

When the pressure receiving members 23 having a width corresponding to each winding strip width are employed as in the illustrated embodiment, a pressing force proportional to the width of the pressure receiving portion of each pressure receiving body 23 is obtained, and the entire winding strip width is obtained. Is substantially equal to the sum of the widths of all the pressure receiving members 23, so that the air pressure to the elastic tube 21 only needs to be maintained at a fixed ratio to the air pressure to the air cylinder 8.

It is noted that each pressure receiving body 23 has a width corresponding to each winding strip width, which means that the width of each pressure receiving body 23 is exactly proportional to each winding strip width, and a pressing force that is exactly proportional to each winding strip width. Does not mean only the winding mode that occurs in each press roller 5, but includes various winding modes appropriately modified in accordance with various winding conditions. That is, as described above, a winding mode in which a pressing force that is exactly proportional to each winding strip width is not always an ideal winding mode.For example, the pressing force increases with an increase in each winding strip width. Even so, the larger the width of each winding strip, the more the pressing force in proportion to the width of the winding strip is not required. Thus, the rate of increase of the optimum pressing force according to the material of the web 1 and other winding conditions is reduced. In some cases, a different winding mode is required. In such a case, the pressure receiving member 23 having an optimum width should be selected in consideration of the increase rate so as to obtain the optimum pressing force.

Further, in the above embodiment, even if the individual combination width of each winding roll 4 on the same row is changed, the total width of all the winding strips is substantially constant (in the case of biaxial winding, the width of the generally applied material is generally equal). Therefore, the force of the air cylinder 8 and the force of the elastic tube are obtained at the same air pressure according to the diameter of the air cylinder 8, the diameter of the elastic tube 21 and the lever ratio of transmitting the force. If the dimensions and the like of each part are calculated and designed in advance so that the total force of all the press rollers 5 by the air cylinder 21 is balanced, the air cylinder 8
The lower chamber and lower elastic tube 21 (both pressurized side), and the upper chamber and upper elastic tube 2 of air cylinder 8
1 (both on the pressure reducing side) are used as common circuits, and by applying the same air pressure to these circuits, a balanced state is obtained at all times.
In addition, the pressure side and the pressure reduction side of the elastic tube 21 can be freely adjusted and controlled to a desired pressure independently or in association with each other.

In one set of the second arms 17 corresponding to the respective winding rolls 4, the pressing roller 5 occupies most of the ratio of the weight of each component to the pressing force due to its own weight, and the weight of the pressing roller 5 is almost zero. It is proportional to its width. Therefore, for example, an air pressure that exactly balances the weight of the press roller 5 is supplied to the air circuit on the pressure reducing side to first create a state where the pressing force is zero, and an arbitrary air pressure is further applied to the air circuit on the pressurizing side. When supplied, each pressing force can be obtained from zero in proportion to the air pressure and arbitrary and proportional to the winding strip width.

According to the above construction, when the actual total width of the winding line greatly differs from the design predetermined value, the force of the elastic tube 21 as a pressing device for each pressure receiving member 23 is temporarily reduced to a mere fixed area. If only the pressure of the applied air is applied, there is a disadvantage that the pressure receiving members 23 hit one edge without being balanced in the small gap 19, but in reality, the radial direction due to the air pressure in the elastic tube 21 occurs. Of the round belt 22, deformation of the spring constant corresponding to the deformation, etc., the constant force under the constant air pressure regardless of the displacement. Unlike the case of an air cylinder that outputs air, the displacement and output are non-linear, and the change in force according to the deformation, such as a spring, is slightly expressed. In it it shows balance, without good action inconvenient.

However, regarding the displacement, the difference in winding diameter between the winding rolls 4 is at most several millimeters, and the pressure difference between the pressure roller 23 and the pressure receiving member 23 in the second arm 17 causes the pressure difference in the pressure receiving member 23. Is a fraction of that, and on average, each pressure receiver 23 acts to balance approximately halfway in the gap 19, so the difference in force due to the difference in the position of each pressure receiver 23 is: Compared to the case of the prior art using a spring, this is extremely small because it is due to the force of air.

In this embodiment, the pair of the second arms 17 is a pair. However, for example, one second arm 17 is a pair, and the second arm 17 is rotated by one pressure receiving member 23 or cantilever. It goes without saying that the press roller 5 and the like can be attached.

In the present embodiment, each individual pressing roller device according to the present invention is configured such that the web 1 runs in a long space from the roller 2 at the fixed position to the core 3 at the fixed position and can be wound up. Although the case where the present invention is applied to a take-off machine is shown, in this case, a long arm is required, and the swing shaft 6 is largely turned as the winding diameter increases. However, the individual presser roller devices can be naturally applied to a winding machine of a type in which the winding machine or the roller portion is constantly moved by an increase in the winding radius in accordance with an increase in the winding diameter. In this case, the pressing roller 5 does not need to be relatively displaced relative to the roller portion, a short arm is sufficient as a whole, and the stroke of the air cylinder 8 for determining the entire pressing force may be extremely short. Or it may be omitted and omitted.
That is, in this case, the fixed horizontal shaft 14 and the elastic tube 21
Only the control of the force by means of the above can operate sufficiently and achieve the purpose.

[0033]

As described above, each individual press roller device according to the present invention is constructed as described above, and therefore has a simple structure and low cost. It can be easily moved in the direction, and the width, replacement, and number of each presser roller can be easily changed, and the pressing force of each presser roller can be adjusted freely by decreasing or increasing it from its own weight. In addition, a desired force according to the web width can be obtained even when assembling winding in which different winding widths are mixed.

By using the individual pressing roller devices, an arbitrary pressing force per one pressing roller or an arbitrary pressing force corresponding to the winding strip width is reduced or increased from the own weight of the pressing roller. Also, it is possible to set any force from zero by adjusting one air pressure, and it is also possible to control the characteristics so that an arbitrary holding force can be obtained as the winding diameter increases during operation is there.

In addition, even if there is a slight difference in the winding diameter between the respective winding rolls, the change in the pressing force by each pressing roller is very small, and the individual pressing roller device of the individual pressing roller device can maintain a uniform pressing force. The original purpose can be achieved.

In the above apparatus, the first arm system is relatively heavy and hard to vibrate, and the second arm system is relatively light and has low inertia, so that the natural frequency of vertical movement is high, and the second arm system follows the winding roll at high speed. Excellent in nature.

[Brief description of the drawings]

FIG. 1 is a side view schematically showing the entire individual press roller device according to an embodiment of the present invention.

FIG. 2 is a plan view of one end of each individual pressing roller device shown in FIG. 1;

FIG. 3 is a side view of a first arm part shown in FIG. 2;

FIG. 4 is a side view of a main part including a second arm part of each individual pressing roller device shown in FIG. 1;

5 is a plan view of a main part including a second arm portion of each individual pressing roller device shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Web 3 Core 4 Take-up roll 5 Holding roller 6 Oscillating axis 11 First arm 14 Horizontal axis 17 Second arm 21 Elastic tube 23 Pressure receiving body

────────────────────────────────────────────────── (5) References JP-A-10-231052 (JP, A) JP-A-57-57156 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65H 18/00-18/28

Claims (3)

(57) [Claims] 1. An individual press roller device in which a press roller is always brought into contact with an outer periphery of a winding roll formed on a winding core by winding a web so as to apply a desired contact pressure. A swinging shaft that is arranged and provides a desired swinging power, a first arm fixed on the swinging shaft and having a resilient tube arranged in the width direction of the winding strip, and wound on the tip of the first arm A horizontal axis disposed in the width direction, and provided on the horizontal axis so as to be set at an arbitrary position in the axial direction and rotatable about the axis and to contact the elastic tube on the first arm. A pressure roller provided with at least one set of second arms, and a press roller rotatably supported at the tip of each set of second arms in the width direction of the winding strip so as to be rotatable in correspondence with each winding core; In the elastic tube on one arm Each individual pressing roller device wherein a desired rotational power is applied to each set of second arms via the pressure receiving body by supplying air pressure. 2. The individual press roller device according to claim 1, wherein two elastic tubes are provided on the first arm so as to exert forces on the respective pressure receiving members in directions opposite to each other. 3. The individual pressing roller device according to claim 1, wherein the pressure receiving members of the second arms of each set have a width corresponding to a winding strip width.