JP3373474B2 - Sheet winding method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet winding method in which a continuously fed sheet is wound and taken out as a wound sheet roll at the end of a production line of a sheet made of synthetic resin, paper, cloth or the like and various processing lines. Regarding how to take.

[0002]

2. Description of the Related Art Generally, a synthetic resin sheet is obtained by heating and melting pellets of a thermoplastic resin in an extruder and continuously extruding the pellets into a sheet form from a T-die, and winding the cooled and cured sheet at the end of a running process. It is taken up by a machine and made into a wound sheet roll of the required diameter. This winding is performed, for example, in FIG.
As shown in FIG. 3, a paper tube P as a winding core is fitted on the winding shaft 2 of the winding machine 1, the end portion of the sheet S is wound around the paper tube P, and the winding shaft 2 is driven to rotate. The winding shaft 2 stopped at the stage when the winding amount reaches the required winding amount is removed from the winding machine 1, and the winding sheet roll R is taken out integrally with the paper tube P from the winding shaft 2. There is. In this winding machine 1, a pair of winding shafts 2 and 2 are attached to both ends of a main turning bowl 4 which can turn around a turning support shaft 3, and one winding shaft 2 is used as described above. During the operation of pulling out the wound sheet roll R, the winding of the sheet S can be continued by the other winding shaft 2. Reference numeral 5 denotes guide rolls attached to both ends of a sub-turning bowl 6 which is arranged orthogonal to the main turning bowl 4.

However, an air shaft is widely used as the winding shaft 2. This air shaft is shown in Figure 1.
As shown in FIG. 5 (A), a large number of short ridges along the axial direction radially arranged on the outer peripheral surface are provided in the metal pipe shaft 21 having a plurality of short slit-shaped window portions 21a ... The rubber tube 22 having the lug projections 22a ... Is inserted into the slit-shaped window portion 21a so that the internal pressure of the rubber tube 22 can be increased or decreased. The lug protrusions 22a are configured to move in and out of the slit-shaped window portion 21a by the expansion and contraction of the rubber tube 22 as the internal pressure increases and decreases.

Therefore, when the sheet S is wound, the paper tube P is loosely fitted on the winding shaft 2 in which the lug protrusions 22a are retracted, and then the internal pressure of the rubber tube 22 is increased. As shown in FIG. 15B, the lug projections 22a are pressed against the inner peripheral surface of the paper tube P to hold the paper tube P integrally rotatable with the winding shaft 2. Then, after the required amount of the sheet S is wound in this state, the internal pressure of the rubber tube 22 is reduced to release the pressing contact of the lug protrusions 22a ,. Can be easily pulled out.

[0005]

The wound sheet roll R thus obtained is subjected to various secondary processes such as hot press molding, or is shipped as a product in a roll form. After the S is used up, the paper tube P remains. However, such a paper tube
It is used not only for the synthetic resin sheet described above, but also for the core when winding various sheet materials, and its consumption is extremely large, but the paper tube is passed through the shaft of the unwinder during secondary processing. It is difficult to collect used items and re-use them because they may be crushed at the end of the paper tube during transportation or product display, resulting in defects such as crushing, distortion and scratches. . Therefore, at present, almost all of the huge amount of used paper tubes is incinerated, but this is a big problem from the viewpoint of resource saving, and it is also a great waste in terms of cost. Depending on the adhesive components used, harmful substances such as dioxins may be generated during incineration, which may cause environmental pollution.

In view of the above circumstances, the present invention provides a method for winding various sheets such as a synthetic resin sheet.
An object of the present invention is to provide a means capable of surely winding without using a paper tube, and thus solving problems such as resource consumption, cost increase, and environmental pollution due to incineration due to the conventional use of paper tubes.

[0007]

In order to achieve the above object, the sheet winding method according to the first aspect of the present invention is such that the sheet S to be continuously fed is indicated by the reference numerals in the drawings. The winding sheet 2 is wound around the winding shaft 2 of the winding machine 1 that is driven to rotate, and after the winding shaft 2 having reached the required sheet winding amount is removed from the winding machine 1, the winding sheet roll R is wound from the winding shaft 2. In the method of winding the sheet, a plurality of lug projections 22 that move in and out on the peripheral surface of the winding shaft 2 by increasing or decreasing the internal pressure.
By using an air shaft provided with a ..., The metal fittings 7A, 7B made of metal or hard synthetic resin are externally fitted to the air shaft, and the lug projections 22a ... , 7B are displaced radially outward to expand the sheet winding diameter of the winding shaft 2, and in this expanded state, the sheet S is directly wound on the fitting members 7A, 7B, and then the lug by causing the projection 22a ... retracts, the fitted around member 7A, displaces the 7B radially inwardly, the reduced diameter take-up shaft 2 and output vent from the center hole of the wound sheet roll R, the winding shaft 2 Winding sheet without the
The opening of both ends of the center hole of the base R prevents the center hole from losing its shape.
A short tubular protector 9 for stopping the tubular portion 9a of the tubular portion 9a.
The inner end is blocked by the shielding film portion 91, and the external pressure causes
Therefore, a short tubular protector in which the shielding film portion 91 can be broken is fitted.
It is characterized in that the the As.

According to the above construction, the sheet S is wound by using the fitting members 7A and 7B instead of the conventional paper tube.
Since this winding is performed in a state where the lug projections 22a of the winding shaft 2 are protruded, the wound sheet roll R after winding is wound.
When the lug projections 22a are retracted during the extraction of the lugs, the fitting members 7A and 7B are displaced inward in the radial direction, and the diameter on the winding shaft 2 side is the central hole H of the winding sheet roll R.
The inner diameter of the winding shaft 2 is smaller than the inner diameter of the winding sheet roll R, so that the winding shaft 2 can be easily removed from the winding sheet roll R. Then, while the fitting members 7A and 7B can be reused again and again,
The rolled sheet roll R is obtained as a rolled sheet alone without a paper tube. In the present invention, the winding shaft 2 is removed.
The wound sheet roll R has a
Short tubular protectors 9 and 9 for preventing the collapse of the heart hole H
It is configured to be fitted. In this case, the wound sheet roll
R is a paperless tube, but both ends of the central hole H are protected by a short tube
Since it is protected by the tools 9 and 9,
It can be hung by using the center hole H at exhibitions,
When using for the next processing, pass the shaft of the unwinder through the center hole H.
Also, damage to the sheet S on the center side of the roll can be prevented. Well
If the short tubular protector 9 is made of thermoplastic resin,
Even if it is damaged by itself, it is the same after being recovered and heated and melted.
It is possible to recycle or use for other purposes. Change
According to the present invention, the short tubular protector 9 includes the tubular portion 9a.
It is assumed that the inner end is closed by the shielding film portion 91.
In this case, the inside of the center hole H of the wound sheet roll R has a short tubular shape.
Is it shielded from the outside by the shielding film portion 91 of the protector 9?
In addition, it is possible to prevent dust from entering. Also, to be used for secondary processing
In this case, do not remove the short tubular protector 9
The shielding film portion 91 can be easily broken by passing it through the core hole H.
it can.

According to a second aspect of the present invention, in the sheet winding method according to the first aspect, the sleeve fitting member is composed of a split tubular member 7A having a C-shaped cross section. In this case, as the cleaving tubular member 7A, one whose inner diameter in a natural state is similar to the outer diameter of the winding shaft 2 is used, and this is attached to the winding shaft 2 to project the lug projections 22a. The cylindrical member 7A is forcibly expanded in diameter and fixed to the winding shaft 2, and rotates integrally with the winding shaft 2. Further, if the lug protrusions 22a are retracted after the winding, the cleaving tubular material 7A is reduced in diameter to the original state by the elastic restoring force.

According to a third aspect of the present invention, in the sheet winding method according to the first aspect, the sleeve fitting member is composed of a pair of half-divided cylinder members 7B, 7B having a semicircular arc-shaped cross section.
While 7B is covered on the winding shaft 2 from both sides, both ends thereof are held by the holding tools 8A to 8C and attached to the winding shaft 2, and at least one holding tool 8B, 8C.
Thus, the two halved cylindrical members 7B, 7B are elastically pressed against the winding shaft 2. In this case, the holding device 8
Both half-divided cylinder members 7 attached to the winding shaft 2 through A to 8C
B and 7B are displaced outward in the radial direction against the pressing force to the winding shaft 2 by projecting the lug projections 22a, so that the winding shaft 2 is expanded with the sheet winding diameter increased.
Can be wound by rotating. Then, if the lug projections 22a ...
Is returned to the state of being pressed against the surface of the winding shaft 2 by the pressing force of the holding tools 8B and 8C.

According to a fourth aspect of the present invention, in the sheet winding method according to the third aspect, the holding tool 8B that elastically presses the two half-split tube members 7B, 7B against the winding shaft 2 is used. ,
A pair of semi-arcuate pressing members 81, 81 fitted onto each half-split tube member 7B and snap rings 82, 82 engaging with the outer periphery of the pressing members 81, 81 are used. In this case, the two half-split tube members 7 mounted on the winding shaft 2
B and 7B are pressed against the winding shaft 2 by the spring elasticity of the snap rings 82 and 82, and the lug projections 22a are projected, so that the snap rings 82 and 82 are forcibly expanded against the spring elasticity. As a result, both the half-divided cylinder members 7B, 7B are displaced outward in the radial direction. Then, the take-up of the wound wound sheet roll R is performed by the lug projection 22a.
.. may be retracted, and then the snap rings 82, 82 and the pressing members 81, 81 of the holding tool 8B on the extraction side may be removed.

According to the fifth aspect of the invention, in the sheet winding method of the third aspect, the holding tool 8C for elastically pressing the two half-split tube members 7B, 7B against the winding shaft 2 is used. ,
A rubber band or rubber ring is used. In this case, the two half-divided cylindrical members 7B, 7B mounted on the winding shaft 2 are pressed in the winding shaft 2 side by the rubber elasticity of the holding tool 8C and are moved in the radial direction as the lug projections 22a come in and out. Will be displaced. To remove the wound sheet roll R, the lug projections 22a may be retracted, and the holding tool 8B on the extraction side may be removed.

According to the invention of claim 6, in the sheet winding method according to any one of claims 3 to 5, the holding tool 8 on one side is provided.
B and 8C take up the pair of half-split tube members 7B and 7B, respectively.
The holding tool 8A on the other side is fixed to the winding shaft 2 and is composed of a ring body that holds both half-split tube members 7B, 7B in a loosely fitted state. The ring body and each of the half-divided cylinder members 7B are provided with engaging portions 83 and 71 that engage with each other in a concavo-convex manner. In this case, the holding tool 8B, 8C on one side
By this, the lug projections 22a of both the half-divided cylinder members 7B, 7B can be moved in and out to move in the radial direction, and the holding tool 8A on the other side allows the rotational force of the winding shaft 2 to be divided into half-divided cylinder members 7B, 7B.
Will be transmitted to 7B.

[0014]

According to a seventh aspect of the present invention, in the sheet winding method according to any of the first to sixth aspects, the short tubular protector 9 has a tubular shape fitted into the center hole H of the wound sheet roll R. It is made of a synthetic resin molded product in which a flange portion 9b is integrally formed on the outer end of the portion 9a.

In the eighth aspect of the invention, since the cut film groove 92 for breaking the shield film portion 91 by the external pressure is formed in the shield film portion 91, the secondary groove is formed as in the case of the above embodiment. At the time of processing, the shielding film portion 91
The shielding film portion 91 is formed by passing the shaft of the unwinder through the center hole H without removing the short tubular protector 9 in the cut groove 92 of the.
Can be easily broken.

According to a ninth aspect of the invention, the short tubular protector 9 is provided.
Since the tubular portion 9a is formed with a thread 93 on the outer peripheral surface thereof, the tubular portion 9a is inserted into the central hole H of the wound sheet roll R while rotating spirally. 9
a can be easily fitted into the central hole H and can be in a strong fitted state, and the flange portion 9
Since b has an annular rib 94 formed on its flange surface, even if the end surface of the wound sheet roll R is slightly uneven, the annular rib 94 is in close contact with the end surface of the roll R to prevent dust from entering. In addition to the prevention, the flange portion 9b can be prevented from being deformed and reinforced.

According to the tenth aspect of the invention, the air introducing port 23 with the automatic shut-off function plug 23a consisting of a check valve is provided on the peripheral surface side of the winding shaft 2, and separately from this, the end face side of the winding shaft 2 is provided. Similarly, an air outlet port 24 with an automatic closing function plug 24a, which is also a check valve, is provided. Accordingly, in the field work, since the air introduction port 23 is provided on the side surface side of the winding shaft 2, the automatic closing function plug 24a of the air introduction port 23 is operated to introduce the compressed air into the winding shaft 2. It can be easily performed, and since the air outlet port 24 is provided on the end surface side of the winding shaft 2, the end surface of the winding shaft 2 is naturally covered with the bearing side during operation, which is why The automatic closing function plug 24a of the air outlet 24 does not unexpectedly come into contact with external force, and compressed air leaks from the air outlet 24, which does not hinder the winding operation of the wound sheet roll R. The compressed air can be efficiently and easily discharged from the winding shaft 2 after the completion of the winding operation.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a sheet winding method according to the present invention will be specifically described below with reference to the drawings. FIG. 1 shows an example of a winding machine used in the method of the present invention. Since this winding machine has the same structure as the winding machine 1 described with reference to FIG. Are denoted by the same reference numerals.

The winder 1 shown in FIG. 1 has a pair of left and right main turning bowls 4A and 4B and sub turning bowls 6 and 6 at both ends of the turning support shaft 3.
The main turning bowl 4
A pair of winding shafts 2, 2 is detachably attached between both ends of A, 4B, and a pair of guide rolls 5, 5 is attached between both ends of the sub-rotating bowls 6, 6 so as to freely rotate. In addition, each winding shaft 2 is rotationally driven by a drive mechanism (not shown) incorporated in the right-side box-shaped main turning bowl 4A, and the turning support shaft 3 is turned by a turning mechanism (not shown) on the machine frame 10 side. The main swivel bowls 4A, 4B and the sub-swirl bowls 6, 6 can be swung together as a center, so that during the operation of taking out the wound sheet roll R wound on one winding shaft 2, the other winding shaft 2 The winding of the sheet S can be continued.

The winding shaft 2 is composed of the same air shaft as that described with reference to FIG. 15 (A), and as shown in FIG. 2 and FIG. 2 (A), the shaft of the metal pipe shaft 21. Four short slit-shaped window portions 21a ... Along the axial direction are equally spaced in the circumferential direction at each position at regular intervals along the direction, and the rubber tube inserted into the tube shaft 21. Each of the lug protrusions 22a provided on the outer peripheral surface of 22 faces each slit-shaped window portion 21a. Then, as also shown in FIG. 10C, the air introduction port 2 facing the circumferential surface with the automatic closing function plug 23a formed of a check valve on one end side of the winding shaft 2
3 is also provided with an automatic closing function plug 24a consisting of a check valve and an air outlet 24 facing the end face.
When the injection port 11a of the air supply tube 11 is connected to the air introduction port 23 from the circumferential surface of the rubber tube 22 and compressed air is injected into the rubber tube 22, each lug projection 22a is slit due to expansion accompanying increase in internal pressure of the rubber tube 22. While projecting from the window portion 21a, the air outlet 2 from the end surface side of the winding shaft 2
The rubber tube 2 is pushed by pushing in the protrusion 24a of No. 4
The air inside 2 is exhausted to the outside, and the protruding lug protrusions 22a retract as the rubber tube 22 contracts due to a decrease in internal pressure.

In the embodiment of the present invention, the automatic shut-off function plug 23 formed of a check valve on the peripheral surface side of the winding shaft 2 in this manner.
In addition to providing the air introduction port 23 with a, an air outlet port 24 with an automatic closing function plug 24a which is also a check valve is provided on the end face side of the winding shaft 2 separately. Accordingly, in the field work, since the air introduction port 23 is provided on the side surface side of the winding shaft 2, the automatic closing function plug 24a of the air introduction port 23 is operated to operate the compressed air to the winding shaft 2. Can be easily introduced, and since the air outlet 24 is provided on the end face side of the winding shaft 2, the end face of the winding shaft 2 is naturally covered with the bearing side during operation, Therefore, the automatic closing function plug 24a of the air outlet 24 is unexpectedly contacted with an external force, and compressed air leaks from the air outlet 24, which does not hinder the winding operation of the wound sheet roll R. With the completion of the winding work The discharge of the compressed air from the take shaft 2 efficiently can and easily perform it.

As shown in FIGS. 10 (A) and 10 (B), the mounting portions of the winding shafts 2 in the main turning bowls 4A and 4B of the winding machine 1 are connected to the drive spindle 12 on the main turning bowl 4A side and the main turning bowl. U-shaped receiving portions 12a and 13a are provided at the respective tips of the driven support shaft 13 on the bowl 4B side.
Is formed, both end portions 2a and 2b of the winding shaft 2 are fitted to both the receiving portions 12a and 13a, and the support shaft 1 is placed on the fitting portion.
The take-up shaft 2 is connected to both the support shafts 12 and 13 by moving the coupler 14 fitted in the shafts 2 and 13. Thus, the receiving portion 12a of the drive support shaft 12 is provided with the key groove 15, and by engaging the key 25 provided on the end 2a side of the winding shaft 2 with the key groove 15,
The winding shaft 2 is integrally rotated by the rotational drive of the drive support shaft 12. It should be noted that such a mounting structure of the winding shaft 2 and the structure of the air shaft have been generally adopted in a sheet winding machine.

In the first embodiment of the present invention, as shown in FIGS. 1 and 2B, a split tubular member 7A having a C-shaped cross section is fitted on the winding shaft 2 as a fitting member. The cleaving tubular material 7A is formed by cutting a pipe material made of metal such as high-tensile stainless steel or hard synthetic resin along the axial direction over the entire length to form an open annular shape having a C-shaped cross section. The lug projection 22 is attached to the winding shaft 2 as shown in FIG.
Insert in the retracted state of a ... This inserted state is shown in FIG.
As shown in (A), the rubber tube 2 of the winding shaft 2 is next.
When compressed air is introduced into 2, the cleaving tubular member 7A is forcibly expanded in diameter by the protrusion of the lug protrusions 22a ... As shown in FIG. 3 (B), and the cleaving tubular member 7A is elastically restored by the elastic restoring force. It is pressed against and fixed to the winding shaft 2. Therefore, by rotating the winding shaft 2,
A also rotates together.

In the sheet winding method of the first embodiment, the winding shaft 2 in which the cleaving tubular material 7A fitted and inserted as described above is expanded is mounted on the winding machine 1, and the winding shaft 2 is attached to the winding shaft 2. The end portion of the sheet S continuously fed from an extrusion sheet molding machine (not shown) or the like is wound up, and the winding shaft 2 is rotationally driven, so that the sheet S is wound via the one guide roll 5. It is wound directly on the cleaving cylinder material 7A. Then, when the predetermined winding amount is reached, the supplied sheet S is cut to stop the rotation of the winding shaft 2, and the end of the cut sheet S is wound with an adhesive tape 16 (see FIG. 11) or the like. After being fastened to the peripheral surface of the roll R, the winding shaft 2 is removed from the winding machine 1 and the air in the rubber tube 22 is exhausted from the air outlet 24. As a result, the lug protrusion 22a
.. retreats and the cleaving cylinder material 7A is reduced in diameter to its original state by the elastic restoring force, so that a gap is formed between the center hole H of the wound sheet roll R and the outer periphery of the cleaving cylinder material 7A. The wound sheet roll R can be easily pulled out from the winding shaft 2.
The wound sheet roll R thus obtained is a wound product of the sheet S alone without a paper tube. Further, the fitting member 7A is used for the next winding while being attached to the winding shaft 2.

In the second embodiment, as shown in FIGS. 4 and 7, a winding shaft 2 made of an air shaft similar to the above is used.
As a fitting member, a pair of half-divided cylindrical members 7B, 7 having a semi-circular cross section
In a state in which B is covered from both sides, both ends of the holding tool 8A,
It is held by 8B and attached to the winding shaft 2. This half-divided tubular material 7B is a pipe material made of metal or hard synthetic resin cut in half along the axial direction. As shown in FIG. 7, a U-shaped cutout portion is formed at the center in the width direction at one end. 71
have.

As shown in FIGS. 5A and 5B, one holding tool 8A is a ring body made of metal or hard synthetic resin,
Small inner diameter part 8 that fits the outer diameter of the winding shaft 2 at one end side of the inner circumference
4, the other end side is the large inner diameter portion 85, three screw holes 86 penetrating inward and outward are provided at the position of the small inner diameter portion 84 with a phase difference of 90 degrees each, and at the back end of the large inner diameter portion 85. Convex portions 83, 83 are provided on both sides in the radial direction. Then, as shown in FIG. 6B, the holding tool 8A is inserted into the winding shaft 2 with the small inner diameter portion 84 side facing the end part side of the winding shaft 2, and each screw hole is inserted. The take-up shaft 2 is fixed by pressing the set screw 17 screwed into 86, and both halves are divided into an annular gap formed between the inner circumference of the large inner diameter portion 85 and the outer circumference of the take-up shaft 2. The end portions of the tubular members 7B, 7B are inserted into the loosely fitted state, and the cutout portions 71 of each half-split tubular member 7B are engaged with the convex portions 83.

The other holding tool 8B is shown in FIGS.
As shown in FIG. 2, two groove portions 81 along the circumferential direction are provided on the outer peripheral surface.
a, 81a a pair of semi-circular pressing members 81, 8
1 and 2 snap rings 82, 82, and with each pressing member 81 fitted onto each half-split tube member 7B, a snap ring 82 is formed on the outer circumference of both pressing members 81, 81.
Is fitted into the groove portion 81a and is engaged with the groove portion 81a.

Further, in the third embodiment, as shown in FIG. 8, a pair of half-split cylinders each having a semi-arcuate cross section are provided on the take-up shaft 2 made of an air shaft as a fitting member as in the second embodiment. In a state where the materials 7B, 7B are covered from both sides, both ends thereof are held by the holding tools 8C, 8C made of rubber rings or rubber bands and attached to the winding shaft 2. In this case, the half-divided tubular material 7B may have no notch 71.

In the second embodiment and the third embodiment, the half-split cylindrical member 7B fitted on the winding shaft 2 as described above,
7B is pressed against the winding shaft 2 as shown in FIG. 9A by the spring elasticity of the snap rings 82, 82 or the rubber elasticity of the holding tools 8C, 8C when the internal pressure of the winding shaft 2 is reduced. ing. Then, when winding the sheet, compressed air is introduced into the rubber tube 22 of the winding shaft 2 to project the lug projections 22a ... In the same manner as in the first embodiment, as shown in FIG. 9 (B). As shown, both half-split tube members 7B, 7
B is pushed outward in the radial direction against the pressing force due to the spring elasticity or rubber elasticity, thereby expanding the sheet winding diameter. In this expanded state, the snap rings 82, 82 forcibly expanded or the holding tools 8C, 8C forcibly expanded.
By the elastic restoring force of the two half-divided cylinder members 7B, 7B, the two half-divided cylinder members 7B, 7B are pressed against the lug projections 22a and fixed to the winding shaft 2. Also rotates together. Particularly in the case of the second embodiment, both half-split tube members 7
Since the rotational force is directly transmitted by the concave-convex engagement between the notch portion 71 of B and 7B and the convex portion 83 of the holding tool 8A, slippage occurs between the two half-split tube members 7B and 7B and the winding shaft 2. There is no concern that

In the sheet winding, as in the first embodiment, the end portion of the continuously fed sheet S is wound around the diameter-enhancing winding shaft 2 and the winding shaft 2 is driven to rotate. As a result, the sheet S is covered with the two half-split tube members 7 of the winding shaft 2.
Roll up directly on B and 7B. Then, when the predetermined winding amount is reached, the supplied sheet S is cut, the rotation of the winding shaft 2 is stopped, the end of the cut sheet S is fastened, and then the winding shaft 2 is wound. The air in the rubber tube 22 is exhausted from the air outlet 24 from the machine 1. As a result, the lug projections 22a ... Withdraw, and the two half-divided tubular members 7B, 7B are snap rings 82, 82 or the holding tool 8.
Since the elastic restoring forces of C and 8C restore the original state shown in FIG. 9A, there is a gap between the center hole H of the wound sheet roll R and the outer circumferences of the two half-divided tubular members 7B and 7B. You can

Therefore, in the second embodiment, the holding tool 8B is removed, and in the third embodiment, one holding tool 8C is removed.
The winding shaft 2 can be easily pulled out from the center hole H of the wound sheet roll R, so that the wound sheet roll R which is a wound product of the sheet S alone can be obtained. The holding tool 8B can be easily removed by pulling out the snap rings 82, 82, and the holding tool 8C made of a rubber band or a rubber ring can be easily removed.

The half-divided cylindrical member 7 is used as a fitting member.
When B and 7B are used, as a means for holding both ends of the B and 7B on the winding shaft 2, the holding tools 8A and 8A are used as in the second embodiment.
Instead of using C, the holding tool 8B may be used on both sides, or the holding tool 8A and the holding tool 8C of the third embodiment may be used.

By the way, in the winding machine 1 illustrated in FIG. 1, the winding of the sheet S can be continued by rewinding from one winding shaft 2 to the other winding shaft 2. That is, when the winding by the one winding shaft 2 is completed, the swivel support shaft 3 is rotated by a required angle to dispose the winding shaft 2 at rest in the winding work position, and the winding shaft 2 is also rotated. Is rotationally driven to cut the sheet S supplied to the winding shaft 2 being wound, the cut end is wound around the other winding shaft 2 to continue winding, and then the winding is finished. While the rotation of the winding shaft 2 is stopped, the winding shaft 2 is placed at the removing work position by rotating the swivel support shaft 3 by a required angle, and is removed from the winding machine 1 as described above to wind the sheet roll. R
It is sufficient to perform the operation of removing.

The wound sheet roll R thus obtained is
As described above, although the sheet S is a wound product, the sheet S on the center side of the roll is prevented from being damaged by the deformation of the center hole H during subsequent handling.
As shown in FIG. 2, it is recommended to fit the short tubular protectors 9, 9 into the openings at both ends of the center hole H. This short tubular protector 9 has a tubular portion 9a, as shown in FIGS.
Is formed of a synthetic resin molding integrally formed with a flange portion 9b on the outer end thereof, and the inner end of the tubular portion 9a is closed by a shielding film portion 91, and the shielding film portion 91 is radially cut from its central portion. A notched groove 92 is formed and the central hole H
A thread 93 is provided on the outer peripheral surface of the tubular portion 9a for facilitating fitting into the flange portion 9b and making a tight fitting state.
Since the flange portion 9a also comes into close contact with the end surface of the wound sheet roll R, the annular rib 94 for reinforcement,
94 is formed.

In the wound sheet roll R having the short tubular protectors 9 and 9 fitted in the opening portions at both ends of the central hole H as described above, the wound sheet roll R is a paperless tube, but both end portions of the central hole H are protected. Since there,
Even if the shaft of the unwinder is passed through the center hole H when being hung by using the center hole H in transportation, storage, exhibition, or the like, damage to the sheet S on the roll center side is avoided. At the same time, since the inside of the central hole H is shielded from the outside by the shielding film portion 91 of the protector 9, it is possible to prevent dirt and scratches due to the intrusion of dust. In addition, the shielding film portion 91 of the protector 9 may be formed as a thin film, or the shielding film portion 91 may be formed as shown in FIG.
If the cut groove 92 is provided as shown in (4), it can be easily broken by passing the shaft of the unwinder through the center hole H when the secondary processing is performed. The cut groove 92 may be formed as a cut that is completely cut or a cut that leaves the ultrathin film. However, if such a short tubular protector 9 is made of a thermoplastic resin such as polyethylene or polypropylene, even if it is damaged or damaged, it is recovered and heated and melted to reproduce the same or other It becomes possible to use it as a resin material for the purpose, and if it is made of biodegradable resin, used materials can be landfilled without harming the environment.

The sheet winding method of the present invention is not limited to the one having two winding shafts 2 as shown in FIG. 1, but can be applied to a winding machine having only one winding shaft 2. Further, the sheet to be wound is not limited to the extruded resin sheet, but a sheet made of various synthetic resins or rubber, paper, cloth, metal foil, or the like,
These include various materials such as laminated sheets and laminated sheets. Further, in the present invention, the structure for attaching / detaching the winding shaft 2 in the winding machine, the number and arrangement of the lug protrusions 22a of the air shaft used as the winding shaft 2, and the mechanism for moving air in and out of the rubber tube 22 of the winding shaft 2 are described. The structure and shape of the holding tool in the case of using the pair of half-split tube members 7B, 7B as the fitting member, the concave-convex engagement structure between the half-split tube members 7B, 7B and the holding tool, and the short tubular protector 9 Regarding the detailed configuration such as the shape of the above, various designs can be changed other than the embodiment.

[0038]

According to the sheet winding method of the first aspect of the present invention, since the winding member made of the air shaft is fitted with the sleeve fitting member made of metal or hard synthetic resin, winding is performed. , Various sheets including synthetic resin sheet,
It is possible to take up the paper sheet without using the paper tube without any trouble, and to easily pull out the wound sheet roll of the paperless tube from the take-up shaft. Moreover, the sleeve fitting member can be reused repeatedly, so that the conventional paper tube can be used. The problems such as enormous resource consumption, cost increase, and environmental pollution due to incineration can be solved all at once. Also in the present invention
Therefore, both ends of the center hole of the wound sheet roll after winding are opened.
Since the tubular protector is fitted in the mouth,
Use the center hole for transportation, storage and exhibition
The shaft of the unwinder when hanging or hanging in the secondary processing
Avoids damage to the sheet on the roll center side even when passing through the center hole
There is an advantage that is done. Further according to the invention, the winding
Cylindrical protection at both ends of the center hole of the subsequent wound sheet roll
In the above-mentioned sheet winding method for fitting a tool,
The inside of the center hole of the water roll is protected by the shielding film of the short tubular protector.
Since it is blocked from the parts, it is possible to prevent dust from entering.
Also, do not remove the short tubular protector when using it for secondary processing.
The shielding film by passing the shaft of the unwinder through the central hole.
The part can be easily broken, and the protective equipment can be recovered after use.
It has the advantage of being recyclable.

According to the second aspect of the present invention, in the above-described sheet winding method, since a split tubular member having a C-shaped cross section is fitted as a sleeve fitting member on the winding shaft, the sleeve fitting member is attached to the winding shaft. There is an advantage that no special member is required for fixing to, and a pipe material can be used as the cleaving cylinder material, and the member cost can be reduced accordingly.

According to the third aspect of the present invention, in the above-described sheet winding method, when a pair of half-divided cylinder members each having a semicircular arc cross section are fitted on the take-up shaft as a fitting member, both half-divided cylinders are fitted. There is an advantage that the material can be securely attached to the winding shaft via the holding tool and can be easily fixed to the winding shaft.

According to the invention of claim 4, in the above-described sheet winding method using a pair of half-divided cylinder members as the fitting member, both half-divided cylinder members are elastically pressed against the winding shaft. Since the holding tool is composed of the pair of semi-circular pressing members and the snap ring, there is an advantage that the sleeve fitting member and the holding tool itself can be easily attached and detached.

According to the fifth aspect of the present invention, in the above sheet winding method using a pair of half-divided cylinder members as the fitting member, both half-divided cylinder members are elastically pressed against the winding shaft. Since the holding tool is the rubber band or the rubber ring, it is possible to easily attach and detach the fitting member and the holding tool itself, and it is possible to procure the holding tool at low cost.

According to the invention of claim 6, in the above-described sheet winding method using a pair of half-divided cylinder materials as the sleeve fitting member, both half-divided cylinder materials are wound around the winding shaft by the holding tool on one side. Since the rotation of the take-up shaft can be transmitted to both halves of the tubular member by the holding tool on the other side, it is possible to push the space between the halves of the tubular member and the take-up shaft during winding. There is an advantage that slippage can be surely prevented.

[0044]

[0045]

According to the eighth aspect of the present invention, in the above-described sheet winding method in which the tubular protector is fitted into the opening portions at both ends of the center hole of the wound sheet roll after winding, the shielding film portion is Since the cut groove for breaking the shielding film portion by the external pressure is formed, when it is subjected to the secondary processing,
The shield film part can be easily broken by passing the shaft of the unwinder through the central hole without removing the short tubular protector in the cut groove of the shield film part, and the protector after use can be recovered. It has the advantage that it can be recycled.

According to the invention of claim 9 , in the above-described sheet winding method, the tubular protector is fitted in the opening portions at both ends of the center hole of the wound sheet roll after winding. Since the cylindrical part of has a thread formed on its outer peripheral surface,
By inserting the tubular portion into the center hole of the wound sheet roll while rotating spirally, the tubular portion can be easily fitted into the center hole, and a strong fitting state can be obtained. In addition, since the flange portion is formed with an annular rib on its flange surface, even if the end surface of the wound sheet roll has a slight unevenness, the annular rib is in close contact with the end surface of the roll and dust is invaded. It is possible to prevent the deformation of the flange portion and to reinforce the flange portion.

According to the tenth aspect of the present invention, in the sheet winding method, an air inlet having an automatic closing function plug made of a check valve is provided on the circumferential surface side of the winding shaft, and the winding is performed separately. On the end face side of the shaft, there is also provided an air outlet having an automatic closing function plug, which is also a check valve. As a result, in the field work, since the air inlet is provided on the side of the winding shaft, it is possible to easily operate the automatic closing function plug of the air inlet to introduce compressed air to the winding shaft. In addition, since the air outlet is provided on the end face side of the winding shaft, the end face of the winding shaft is naturally covered with the bearing side during the winding operation, which unexpectedly causes the air outlet port to be covered. There is no possibility that external force will come into contact with the plug of the automatic closing function and the compressed air will leak from the air outlet, which will not interfere with the winding operation of the wound sheet roll R, and from the winding shaft after completion of the winding operation. The compressed air can be discharged efficiently and easily.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration example of a winding machine used in a sheet winding method of the present invention.

2A and 2B show a winding shaft used in the first embodiment of the present invention, FIG. 2A is a side view of the winding shaft, FIG. 2B is a side view of the winding shaft fitted with a sleeve fitting member, and FIG. 8] is a perspective view showing a fitting operation of the sleeve fitting member to the winding shaft.

FIG. 3 shows a winding shaft used in the first embodiment,
FIG. 6A is a sectional view of the lug protrusion in a retracted state, and FIG. 6B is a sectional view of the lug protrusion in a protruding state.

FIG. 4 is a side view of a winding shaft fitted with a sleeve fitting member used in the second embodiment.

FIG. 5 shows a holding device on one side used in the second embodiment,
(A) is a cross-sectional view along the radial direction, and (B) is a front view.

FIG. 6 shows a winding shaft fitted with a fitting member used in the second embodiment, (A) is a cross-sectional view taken along the radial direction at one end of the fitting member, and (B) is at the other end. It is sectional drawing which follows a radial direction.

FIG. 7 is an exploded perspective view showing a winding shaft, a sleeve fitting member, and a holding member on one side used in the second embodiment.

FIG. 8 is a side view of a winding shaft fitted with a sleeve fitting member used in the third embodiment.

9A and 9B show winding shafts used in the second and third embodiments, FIG. 9A is a sectional view of a lug projection in a retracted state, and FIG. 9B is a sectional view of a lug projection in a projected state. .

10A and 10B are views for explaining the handling operation of the winding shaft, in which FIG. 10A is a perspective view showing a detaching operation with respect to the winding machine at one end side of the winding shaft, and FIG. The front view which shows the connection part of a winding machine, (C) is a perspective view which shows the leading-in / out operation of air with respect to the said winding shaft.

FIG. 11 is a perspective view showing a mounting operation of the tubular protector on the wound sheet roll after winding.

FIG. 12 is a cross-sectional view taken along the axial direction of the same wound sheet roll equipped with a tubular protector.

FIG. 13 shows a tubular protector, (A) is a cross-sectional view taken along the axial direction, and (B) is a bottom view.

FIG. 14 is a vertical cross-sectional side view showing a conventional sheet winding method using a winding machine.

FIG. 15 shows a winding shaft used in a conventional sheet winding method, (A) is a cross-sectional view before winding, and (B) is a cross-sectional view during winding.

[Explanation of symbols]

1 winder 2 winding shaft 21 Metal tube shaft 21a Slit-shaped window 22 Rubber tube 22a lug protrusion 23 Air inlet 23a Automatic closure function plug 24 Air outlet 24a Automatic closing function plug 7A Cleaving cylinder material (jacket member) 7B Half-divided tube material (engagement member) 71 Notch (engagement) 8A-8C holding tool 81 Pressing material 82 Snap ring 83 Convex part (engagement part) 9 Cylindrical protective equipment 9a tubular part 9b Flange part 91 Shielding film part 11 Air supply tube 12 Drive spindle 12a receiving part 13 Driven spindle 13a receiving part 14 coupler S sheet R winding sheet roll H center hole

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Claims (10)

(57) [Claims] 1. A sheet which is continuously fed is wound around a winding shaft of a winding machine, which is driven to rotate, and the winding shaft which has reached a required sheet winding amount is removed from the winding machine. In a sheet winding method for extracting a wound sheet roll from a shaft, an air shaft having a plurality of lug projections that move in and out due to an increase / decrease in internal pressure is used as the winding shaft, and a metal or hard synthetic resin is used for the air shaft. By making the sleeve fitting member made of metal fit on the outside and projecting the lug projection, the sleeve fitting member is displaced radially outward to expand the sheet winding diameter of the winding shaft, and in this expanded diameter state. After directly winding the sheet on the sleeve fitting member, the lug projections of the winding shaft are retracted to displace the sleeve fitting member inward in the radial direction, and the winding shaft having a reduced diameter is wound. From the center hole of the sheet roll And out came, winding Sea was drawn winding shaft
Make sure that the shape of the center hole is
A short tubular protector for preventing the inner end of the tubular portion.
Together but is blocked by the shielding film unit, shielding the by external pressure
Make sure that a short tubular protector that can break the shielding film is fitted.
A sheet winding method characterized in that 2. The sheet winding method according to claim 1, wherein the sleeve fitting member is a cleaving tubular member having a C-shaped cross section. 3. The covering member is composed of a pair of half-divided cylinder members each having a semicircular arc-shaped cross section, and both end portions thereof are held by a holding tool while both half-divided cylinder members are covered on a winding shaft from both sides. The sheet winding method according to claim 1, wherein the sheet winding method is held and attached to the winding shaft, and at least one holding member elastically presses the two half-divided tubular members against the winding shaft. 4. A holding tool that elastically presses both of the half-divided tubular members against a winding shaft includes a pair of semi-circular pressing members that are fitted onto the respective half-divided tubular members, and a pair of holding members. 4. The sheet winding method according to claim 3, further comprising a snap ring that is attached to the outer periphery of the pressing member. 5. The sheet winding method according to claim 3, wherein the holding tool that elastically presses the two half-divided cylindrical members against the winding shaft is a rubber band or a rubber ring. 6. The holding tool on one side elastically presses the pair of half-divided tubular members against the winding shaft, and the holding tool on the other side is fixed to the winding shaft. It consists of a ring body which hold | maintains both half-divided cylinder materials in a loose fitting state, and has an engaging part which mutually engages with this ring body and each half-divided cylinder material unevenly. Sheet winding method. 7. The short tubular protector is made of a synthetic resin molded product in which a flange portion is integrally formed on the outer end of a tubular portion fitted into the center hole of a wound sheet roll. The sheet winding method described in. 8. The sheet winding method according to claim 1, wherein the shielding film portion is formed with a cut groove for breaking the shielding film portion by an external pressure. 9. The tubular portion of the short tubular protector has a thread formed on the outer peripheral surface thereof, and the flange portion has an annular rib formed on the flange surface thereof. The sheet winding method described in. 10. An air inlet with an automatic closing function plug, which is composed of a check valve, is provided on the circumferential surface side of the winding shaft, and an automatic closing is also provided on the end surface side of the winding shaft, separately from this. The sheet winding method according to claim 1, further comprising an air outlet having a function plug.