JPS624159A - Method of manufacturing paper roll such as toilet tissue paper roll or the like - Google Patents

Abstract

PURPOSE:To make it possible provide cheap article to prevent, to eliminate such a trouble that a closet is clogged, and to obtain an effect in saving materials, by extracting a spool core before cutting of a mother roll, and by feeding the spool core to a rewinder to circulately use the spool core. CONSTITUTION:A cardboard cylindrical core as a spool core 1 having a length of about 2m is fitted onto drive roller of a rewinder, and then a paper material is wound up onto the cardboard cylindrical core 1, being pressed against the cylindrical core 1 by means of a touch roller. The cylindrical core 1 is extracted from a mother roll 8 after completion of winding, and automatically or manually returned to the rewinder to be circulately used. The mother roll 8 is cut into round slices by a cutter to obtain articles. The extraction of the cardboard cylinder 1 is made such that one end part of the cardboard cylinder 1 is inserted into between inner and outer cylinders 2, 3, then the inner cylinder 2 is enlarged by means of a retracting conical section 7 to clamp the cardboard cylinder between the cylinders 2, 3 and thereafter a slidable head 4 is retracted. With this arrangement, cheap articles having no cardboard cylinder 1 may be produced, and therefore, it is possible to eliminate a possibility of such a trouble that a closet is clogged. Further, since the spool core may be circulately used, it is possible to obtain an effect in saving materials.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for manufacturing paper rolls such as toilet paper and towel paper.

(Prior art) Conventionally, a wide base paper roll of toilet paper or towel paper is set in a rewinding machine, and a paper tube core is automatically or manually attached to a winding drive device equipped with the rewinding machine. Toilet paper or towel paper is manually fed out from the base paper roll onto this paper cylinder core and wound up. When a predetermined amount of toilet paper or towel paper is wound up to form a base roll, the base roll together with the paper core is removed from the winding drive device. The base roll is then cut to a predetermined length in the axial direction along with the paper cylinder core to produce a product.

(Problems to be Solved by the Invention) In the above conventional method, the base roll is cut along with the paper core in the axial direction, so a short paper core is attached to the inner circumference of the product. Once the paper is used up, the paper tube core is discarded and cannot be recovered. In addition, in the case of public toilets, paper tube cores are thrown away into the toilet bowl and can clog the toilet.

(Means for solving the problem) Therefore, the present invention extracts the winding core from the inner periphery in the axial direction before cutting the base roll, and supplies the extracted winding core to a rewinding machine for circulation. It is characterized by

(Function) According to the present invention, the core used to wind up a predetermined amount of base paper at aOa is extracted from the base roll and used for circulation.

(Example) 1st Example A base paper roll of toilet paper base paper with a width of 2 m and a length of about 20,000 m was rolled up 4 times! A length of approximately 2 m is placed between the two adjacent drive rollers of the rewinding machine.
A paper cylinder core with a diameter of approximately 4C is circumscribed as a winding core, and a vertically movable touch roller is brought into contact with the paper cylinder core, and air is blown onto the tip of the toilet paper base paper that is manually fed out from the base paper roll. The drive roller is rotated while pressing it against the paper tube core, and the toilet paper base paper is wound around the paper tube core E. As the toilet paper is wound on the tube core and becomes thicker, the touch roller is gradually raised. In this way, the base roll of toilet paper is rolled up to a length of 85 m on the paper core, and the drive roller is stopped, the touch roller is pulled up, the base roll is removed from the re-driving roller, and a new paper core is installed. It is circumscribed on the re-driving roller, and the touch roller is lowered to perform the next winding.

During this time, the paper tube core is extracted from the base roll that has been removed from the rewinder, and the extracted paper tube core is automatically or manually returned to the rewinder and recycled for use in winding and manufacturing the base roll. The base roll from which the paper cylinder core has been removed has a length of about 1 in the axial direction.
1-12c Otori's Toilet-/) Cut the paper roll into rounds using a cutting machine to make the product.

The process diagram of the above-mentioned present invention is as shown in FIG. 1, whereas the process diagram of the conventional method is as shown in FIG.

Incidentally, an example of a device for extracting the paper tube core from the base roll is shown in FIG. 3.

The outer diameter is equal to C to the inner diameter of the paper tube core 1, and the inner diameter of the inner tube 2, which is cut halfway from one end with a plurality of axial slits 2', is equal to C to the outer diameter of the paper tube core 1. It is fitted concentrically into the outer cylinder 3, the other ends of which are joined together, and fixed onto the sliding bed 4 in a protruding manner. A fluid pressure cylinder 6 with a piston 5 passing through the inner cylinder is fixed on the sliding bed 4, and a conical part 7 with a large front end is provided at the tip of the piston. By applying the pressure and retracting the piston 6, the part cut by the slit 2' of the inner cylinder becomes the conical part 7.
Make it extensible. The inner cylinder 2 may be made of a material that elastically contracts to its original state when the piston 6 is moved forward, or a spring may be wound around the inner cylinder 2 so that the inner cylinder 2 is contracted by the spring. Preferably, a tapered surface corresponding to the conical portion 7 is formed on the inner periphery of the front end portion as shown in the drawing.

To pull out the paper cylinder core 1 from the base roll 8, insert one end of the paper cylinder core protruding from the end face of the base roll between the inner cylinder 2 and the outer cylinder 3, and then move the piston 5 backward to remove the inner cylinder. By expanding, the end of the cylinder core is sandwiched between the inner cylinder and the outer cylinder, and then the sliding bed 4 is retreated on the fixed bed 9. The sliding bed may be retracted until the other end of the paper cylinder core comes off the end face of the base roll, but if it is retracted to this extent, it will come off even if the worker pulls it by hand. After the bed is retracted by the required amount using the hydraulic piston cylinder lO, the piston 6 is advanced to contract the inner cylinder 2 to its original state.
Lower the base roll from fixed bed 9H and pull it by hand to pull out the paper cylinder core.

Then, the sliding plate is moved forward in preparation for the next extraction.

In addition, in order to prevent the base roll from moving together when the sliding bed is retreated and the paper cylinder core is pulled out, the receiving members 11 that come into contact with the end face of the base roll are placed on the fixed bed on both sides of the outer cylinder. It is preferable to set it in

"Second Embodiment" - Using a rewinding machine similar to that used in the first embodiment, a plastic cylinder or rod shape of approximately 2 m in length was placed between two adjacent drive rollers. Place a roll core with a diameter of about 40 mm, touch the touch roller on the core, roll up toilet paper base paper to a length of 85 m on the core in the same way, stop the operation, remove the base roll, and roll the primary roll. The plastic winding core is pulled out from the base roll which was removed during winding of the base roll, and is automatically or manually returned to the winding machine for circulation use.

The core pulling device is the piston 5 of the pulling device shown in Fig. 3.
It is possible to use a type with a chuck attached to the tip of the roll that wraps around and engages the end of the winding core protruding from the end face of the base roll.

The present invention has been explained above with reference to toilet paper, but
The present invention can be applied to the production of towel paper and other paper rolls in addition to toilet paper.

Furthermore, in both of the above embodiments, a rewinding machine was used to manually feed the core onto the two drive rollers and manually take out the base roll from both drive rollers. It is also possible to use a rewinding machine that allows automatic removal.

(Effects of the Invention) As is clear from the above, according to the present invention, it is possible to manufacture a product that does not have a paper tube core, and accordingly it is possible to provide a product at a lower price to consumers, and to avoid troubles such as clogging toilet bowls. Any gaps that may arise can be eliminated.

Manufacturers keep a small amount of spare cores in case of breakage, and recycle a predetermined number of cores depending on production capacity.

[Brief explanation of the drawing]

1st rpJ is a process diagram of the present invention, FIG. 2 is a conventional process diagram,
FIG. 3 is a schematic diagram of an example of a device for extracting a paper cylinder core from a base roll. Patent Applicant: Masashi Kobayashi, Agent: □-t-＊EB@□-・, Patent Attorney: Fuku 1) Takerenma: Patent Attorney
Fuku 1) Ken 3 procedural amendment (method) 9th month of 1985

Claims (1)

[Scope of Claims] A roll paper roll for toilet paper, etc., in which a predetermined amount of wide paper is wound onto a core using a rewinding machine to create a base roll, and then the base roll is cut to a predetermined length in the axial direction. A roll of toilet paper, etc., characterized in that, in the manufacturing method, before cutting the base roll, the core is pulled out in the axial direction from the inner periphery of the base roll, and the pulled core is supplied to a rewinding machine for circulation use. How to make rolling paper