JPH10279153A - Winding shaft for paper roll manufacturing device and stock mechanism of the winding shaft - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move a winding shaft in the direction of length and pull it out of the center of a roll without damaging an inner face of the roll by providing a lubrication layer on a surface of a shaft material and providing rotatable roller parts in both end parts. SOLUTION: When a paper roll is manufactured and a winding shaft 1 is moved in the direction of length and is pulled out of the paper roll (a), it slides very easily due to a lubrication face 3, and its pulling out is easy and an inner face of the paper roll (a) is not damaged and a winding start end part of a web is not twisted and damaged. When a plurality of winding shafts 1 are brought in contact mutually and are put in parallel rows in a stock mechanism, adjacent winding shafts 1 are arranged in parallel in a line-contact condition in the direction of length, roller parts 4 in both end parts are received by a top face of each conveyance belt and are put thereon, and the whole outer peripheral faces of shaft materials are collected without coming in contact with anything.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding shaft used for manufacturing paper rolls such as toilet paper and roll paper for wiping, and a stock mechanism for the winding shaft.

[0002]

2. Description of the Related Art As is conventionally known, paper rolls such as toilet paper and roll paper for wiping are formed by winding a web unwound from a raw roll onto a winding shaft by a predetermined length to form a roll. By moving the winding shaft in the length direction with one end of the roll fixed, the roll is pulled out from the center position of the roll and manufactured in a form having a circular hole at the center. Particularly in the production of toilet paper, for example,
As described in Japanese Patent Application Laid-Open No. 825, at an initial winding start portion where a web from a raw roll is wound around a winding shaft, the web is tightly wound, or water or an adhesive is applied to temporarily bond the web. Is relatively loosely wound. When the web is wound around the winding shaft by a predetermined length to form a roll, the winding shaft is moved in the length direction while one end of the roll is fixed by the stopper mechanism, and the roll is pulled out from the center position of the roll. Removed.

When the winding shaft is pulled out from the center of the roll, since the upper winding start portion is adhered to the winding shaft, if the pulling shaft is forcibly pulled out against the adhesive force, the inner surface of the roll may be damaged or broken. Alternatively, since the winding start portion shifts in the moving direction of the winding shaft, the roll end surface gently expands in an arc shape, and the commercial value as toilet paper is lost. Therefore, for example, 7-251
In Japanese Patent No. 16, the outer diameter of the winding shaft is configured to be contractible, and in the step of winding the web, the outer diameter is set to a normal outer diameter.
In the step of pulling out from the roll, the outer diameter of the winding shaft is contracted to prevent the center of the roll from being damaged or broken, and the roll end face from expanding.

[0004]

However, in the above-mentioned prior art, since a complicated structure for changing the outer diameter is required inside the long and thin winding shaft, the winding shaft itself becomes expensive. Therefore, it will be reflected in the price of the toilet paper itself. In addition, in the web winding process and the winding shaft withdrawing process, the outer diameter of the entire length of the long winding shaft must be changed instantaneously, and the outer diameter is changed at the end of the winding shaft. Therefore, rolls cannot be manufactured at high speed and continuously. Particularly in the prior art,
There is no description of a specific configuration for changing the outer diameter of the winding shaft and an operation means for changing the outer diameter, so that at present it cannot be put to practical use. Therefore, in the paper roll manufacturing process, the temporary cylinder core provided at the center of the roll, that is, the inner surface of the circular hole provided at the center of the roll is not damaged or broken, and the roll is extremely easily and reliably removed from the roll. There has been a demand for a retractable winding shaft.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above-mentioned conventional disadvantages, and has been proposed in view of the conventional requirements. A rotatable roller portion is provided at both ends of a shaft material. A winding shaft including one or both of a winding shaft and a lubricating layer provided on the surface, and for storing the winding shaft and moving the winding shaft when necessary. Provided is a stock device for a winding shaft, wherein a roller mechanism at both ends of the winding shaft is provided with endless transport bands arranged on the upper surface side by side. Things.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. A winding shaft 1 for a paper roll manufacturing apparatus according to one embodiment of the present invention is for winding a paper roll a around an outer peripheral surface, and a lubricating layer 3 is provided on a surface of a metal rod-shaped shaft material 2. It becomes.

The lubricating layer 3 may have any structure as long as it is extremely slippery with respect to the inner surface of the paper roll a to be wound and is a thin layer. And a polyfluorinated ethylene resin (trade name “Teflon” of DuPont)
When the lubricating layer 3 is formed on the surface of the shaft member 2 by the above method, it is practical because it has high strength and a high lubricating function and can be easily formed on the surface of the shaft member. The lubricating layer 3 may be the entire length of the shaft member 2, but it is sufficient to form the lubricating layer 3 only on the portion where the paper roll a is wound except for a part of both ends.

In the winding shaft 1 according to another embodiment of the present invention, a rotatable roller portion 4 is provided at both ends of a rod-shaped shaft member 2. The roller part 4 is, for example, a bearing mechanism 5, which is located at both ends of the rod-shaped shaft member 2, and the head of a fastening rod 7 attached to a blind hole 6 formed at the end of the rod-shaped shaft member 2. When the fixing rod 7 is fixed by screws 9 driven toward the blind hole 6 from the outside of the end of the rod-shaped shaft material 2 while supporting the outside with 8, the roller portions 4 are attached to both ends of the winding shaft 1. It is very simple and can be installed without detachment.

In the process of manufacturing a paper roll by winding a web with the winding shaft 1 of the present invention, when the paper roll is manufactured by hardening a part at the beginning of winding and then loosely winding the paper roll, the winding shaft 1 is lengthened. When the paper roll a is pulled out from the paper roll a, the lubricating layer 3 makes it extremely slippery, so that not only is it easy to pull out, but also the inner surface of the paper roll a is damaged, and the winding start end of the web is turned up. And will not be damaged. In addition, in the process of manufacturing the paper roll, even when the winding shaft 1 is moved in the length direction and pulled out even when the web is wound by spraying an adhesive or water on a part of the winding start and the web is wound, As described above, the inner surface of the paper roll a is damaged due to slippage by the lubricating layer 3,
Not only does the winding start end of the web not be damaged by being rolled up, but also does not collapse.

The present invention also provides a stock mechanism 21 using the winding shaft 1. As shown in FIG. 3, in the web winding step 12 of the paper roll manufacturing apparatus 11, a paper roll a with a winding shaft having a predetermined length of the web is sent out backward and a new winding is performed. Since the shaft 1 must be supplied, a stock mechanism 21 for the winding shaft 1 is provided above the paper roll manufacturing apparatus 11.

The stock mechanism 21 is provided with left and right rotating shafts 23 having pulleys 22 at both ends.
Endless transport belts 24 are provided in parallel between the pulleys 22. Each of the transport belts 24 can use a thick belt or a chain material, and the transport belts 24 can run in the same state by forced rotation of one of the rotating shafts 23.

Since the distance between the two conveyor belts 24 is substantially equal to the length of the winding shaft 1,
When the take-up shaft 1 is mounted on the upper surface of the belt at right angles, only the roller portion 4 is received by each transport band 24.

Therefore, when a plurality of winding shafts 1 are brought into contact with each other and placed in parallel in the stock mechanism 21 having the above-described configuration, the adjacent winding shafts 1 are arranged in line contact in the length direction and are arranged in parallel. Moreover, the roller portions 4 at both ends are received and placed on the upper surface of each transport band 24, and the entire outer peripheral surface of the shaft material is stored without contacting anything.

When a new take-up shaft 1 is supplied to the web take-up step 12, the two conveyor belts 24 are moved by the rotation shaft 23 by the length of the outer diameter of one take-up shaft 1. As a result, the take-up shaft 1 at the end is disengaged from the stock mechanism 21, and the take-up shaft 1 is supplied to the web take-up step 12 by the lift mechanism 13, and the web is wound around to produce a paper roll. .

Therefore, according to the stock mechanism 21 of the present invention, in the state where the winding shafts 1 arranged in parallel are stored, even if the adjacent winding shafts 1 are in line contact,
The table and other planar parts do not contact the outer surface of the lubricating layer 3. Then, even if the transport belt 24 moves and the adjacent winding shafts 1 that are in linear contact move, the left and right roller portions 4 rotate on each winding shaft 1, and the shaft material rotates. do not do. For this reason, even if the lubricating layer 3 of the adjacent winding shaft 1 is in linear contact, the lubricating layer 3 does not rotate, so that the lubricating layer 3 is not peeled or damaged, and the lubricating layer 3 is stably used for a long time. Can withstand.

[0016]

In summary, according to the present invention, a lubricating layer is provided on the surface of a shaft material, or a rotatable roller portion is provided at both ends to form a winding shaft for a paper roll manufacturing apparatus. Even when the paper roll is wound around the take-up shaft, the take-up shaft is extremely slippery on the inner surface of the roll. Therefore, in the process of moving the winding shaft in the length direction with the end of the roll fixed, and pulling out from the center of the roll, the inner surface of the roll is not damaged or deformed, and water or adhesive is not used. Even if the inner peripheral surface of the roll is wet, the winding shaft slips easily and comes off without damaging the inner surface of the roll, so that the commercial value of the paper roll is significantly increased and the production yield is increased. Is good.

Furthermore, in the present invention, a stocking device for a winding shaft for a paper roll manufacturing device, in which a winding shaft having rotatable roller portions provided at both ends of the shaft material is stored and moved when necessary. The use of a stock mechanism characterized in that endless transport belts in which roller portions at both ends of the winding shaft are placed on the upper surface are arranged side by side, thereby storing the winding shaft. In the moving state, the lubricating layer of the adjacent take-up shaft does not move even if it is in linear contact, so the lubricating layer is protected and will not be damaged or peel off, and can withstand long-term use And have high practical value.

[Brief description of the drawings]

FIG. 1 is a perspective view in which a part of a winding shaft is omitted in the middle.

FIG. 2 is a front view in which a part of a state where a winding shaft is stored in a stock mechanism is partially cut away and intermediately omitted.

FIG. 3 is a schematic side view illustrating a relationship between a paper roll manufacturing apparatus and a stock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Winding shaft 2 Shaft material 3 Lubrication layer 4 Roller part 5 Bearing mechanism 11 Paper roll manufacturing apparatus 12 Web winding process 21 Stock mechanism 22 Pulley 23 Rotation axis 24 Conveyor belt

Claims (5)

[Claims] 1. A winding shaft for a paper roll manufacturing apparatus, wherein rotatable roller portions are provided at both ends of a shaft material. 2. The winding shaft according to claim 1, wherein the roller portion is a bearing mechanism. 3. A winding shaft for a paper roll manufacturing apparatus, wherein a lubricating layer is provided on a surface of a shaft material. 4. The winding shaft for a paper roll manufacturing apparatus according to claim 3, wherein the lubricating layer is made of a polyfluoroethylene resin. 5. A stocking device for a winding shaft for a paper roll manufacturing apparatus, wherein a winding shaft having rotatable roller portions provided at both ends of a shaft material is stored and moved when necessary. A stock mechanism, wherein endless transport bands on which roller portions at both ends of the winding shaft are mounted on the upper surface are arranged side by side.