JP3372279B2 - Manufacturing method of log roll of coreless toilet paper, and reel of log roll of coreless toilet paper - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a log roll of coreless toilet paper and a winding shaft for winding the log roll of coreless toilet paper.

[0002]

2. Description of the Related Art According to Japanese Patent Publication No. 62-34666, a winding shaft is placed between a pair of parallel friction driven rolls at a winding position, and a rider roll that can move up and down is brought into contact with the winding shaft from above. Driving the friction drive roll,
The toilet roll (paper) is wound on the outer circumference of the winding shaft by rotating the winding shaft by the contact frictional force between the drive roll and the winding shaft, and the rider is formed by a winding layer of paper that is wound around the outer circumference of the winding shaft and grows. When the roll is pushed up, and the paper is wound on the outer circumference of the winding shaft for a predetermined length to become a log roll, the friction drive roll drive is stopped, the rider roll is retracted upward, and the log roll is driven in pairs with the winding shaft. It is known that the roll is advanced from the top of the roll to the next forward position to cut the paper, the log roll is removed from the reel, and the log roll is cut into a plurality of toilet paper rolls of a predetermined width by a log cutter.

[0003]

When the log roll taken out from the winding shaft is sliced by a log cutter, the inner circumference of the toilet paper roll cut by the pressure applied by the blade is prevented from being crushed by warping, and the shaft of the holder is prevented. In order to secure an inner space to pass through, paper is sprayed with a sizing solution containing a low concentration of an adhesive such as glue to solidify the inner circumference at the beginning of winding the paper. There is. However, the spray of the paste liquid is generated between the pair of friction drive rolls, that is, between the inlet side friction drive roll that draws in the paper and the outlet side friction drive roll that sends out the paper drawn in by the inlet side friction drive roll toward the rider roll. However, since it is performed when the paper is not yet wound around the winding shaft, the paper may be torn in the width direction due to the force pulled by the outlet side friction drive roll. Also, part of the sprayed glue liquid adheres to the exit side friction drive roll and the surface of the rider roll,
Paper powder, dust, etc., generated during the winding process adheres to the glue liquid and hardens to form protrusions on the smooth roll surface. As a result, the toilet paper cannot be wound evenly in the axial direction, and there is a defect that the paper is cut during winding due to uneven winding speed.

[0004]

The method for producing a log roll for coreless toilet paper according to claim 1 was developed to solve the above problems, and a log roll is obtained by winding a paper on a winding shaft. Then, in the method for producing a log roll of a coreless toilet paper, in which the log roll is pushed in the axial direction of the winding shaft and pulled out from the tip of the winding shaft, the log roll is pulled out in the axial direction of the winding shaft. The liquid is sprayed from the tip to the inner circumference of the log roll, and the inner circumference of the log roll is heated by a heating body provided in an extended shape at the tip of the winding shaft. A second aspect of the present invention relates to a winding shaft for winding the log roll of the first aspect, wherein a paper is wound around the outer periphery to form a log roll, and the log roll is a coreless toilet paper that is axially pulled out from the tip. In the winding shaft of the log roll, a heating body having a built-in heater is attached to the tip of the shaft body of the winding shaft in an extended manner, and the shaft body is provided with a central hole whose end is closed and liquid is blown by compressed air from the other end. With
A plurality of ejection holes opening from the center hole to the outer periphery are provided in the tip end portion of the shaft body in the radial direction.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, 11 and 12 are a pair of parallel inlet-side friction drive rolls and outlet-side friction drive rolls in a winding position, and a winding shaft 1 is provided between the two friction drive rolls. When the rollers are placed and driven by the contact frictional force between the rollers 11 and 12, both rollers rotate to wind the toilet paper (paper) P on the outer periphery (FIG. 1). During this winding, the rider roll 13 that freely rotates from above contacts the winding shaft 1,
It is pushed up by the growth of the winding layer R of the paper wound on the winding shaft. In this embodiment, the rider roll 13 is rotatably supported by a support frame 15 attached to an elevating member such as a piston cylinder 14 or a swivel arm that swivels in the vertical direction by the piston cylinder.

When the paper is wound on the winding shaft 1 for a predetermined length to form the log roll L, as shown in FIG.
Rider rule 1
3, the kicker 2 pushes both ends of the winding shaft protruding from both ends of the log roll L placed between the pair of friction drive rolls 11 and 12 by the kicker 2 and sends the log roll together with the winding shaft to the forward position, The roll for the next log roll is supplied between the pair of friction drive rolls 11 and 12 and rides on the paper, and the cutter 3 cuts the following paper between the roll and the forward position, and at the same time. The glue liquid is attached to the tail end of the paper of the log roll, the air injection nozzle 4 injects air from the bottom to the winding start portion of the paper, and the winding start portion is folded back on the winding shaft as shown by the broken line. When it descends and presses the winding start portion of the paper onto the winding shaft, the friction drive rolls 11 and 12 start rotating and restart the winding of the next log roll.

To attach the glue liquid to the tail of the paper of the log roll, the air cylinders 61 are attached to both ends of the cutter 3 with the pistons facing downward, and the glue string 62 is attached between the lower ends of the pistons to cut the cutters. When the paper is cut by the paper, both air cylinders extend the piston downward, and the well-known gluing device 60 presses the glue liquid contained in the glue string against the paper. The glue is in a gutter-shaped elongated container 63 that crosses over the paper,
This container can be moved back and forth by an air cylinder 64, and is normally located directly below the glue string 62 in the position shown in FIG. When gluing, the air cylinder 61 moves the piston downwardly and shortly to immerse the glued string 62 in the glue liquid in the container, and then the air cylinder 61 retracts the piston and puts out the glued string on the container 63. After that, when the air cylinder 64 moves the container 63 to the position shown in FIG.
Moves the piston downwards for a long time to attach the glue liquid that adheres to the glue string to the paper. And, when finished, the air cylinder 6
1 retracts the piston and pulls up the glue string, and the air cylinder 64 returns the container 63 to a position directly below the glue string.

The log roll L rests on two parallel support rolls 5, 5'in the forward position. In order to remove the log roll L from the tip 1a of the winding shaft 1 in the axial direction, a flange 6 is provided at the other end of the winding shaft, and the other end of the winding shaft at the forward position is opposite to the other end of the winding shaft. A crotch-shaped yoke member 7 into which the end portion is inserted is fixed. When the winding shaft rides over the front supporting roll 5 and is placed between the supporting rolls 5 and 5 ', the other end 1b of the winding shaft falls into the crotch portion 7'of the yoke member 7 (Fig. 3). As a result, when the log roll L is pressed toward the tip of the winding shaft 1, the collar 6 is received by the yoke member and the winding shaft is prevented from moving. A pusher 8 that presses the other end surface of the log roll L in the axial direction toward the tip of the winding shaft 1 between the support rolls 5 and 5 ′.
Is attached to the endless chain 9. Pusher 8
When the log roll L rolls out to the forward position, it is positioned close to the yoke member and faces the other end surface of the log roll rolled out to the forward position.

When the log roll rolls out to the forward position and is placed on the support rolls 5 and 5, and the other end 1b of the winding shaft enters the crotch portion of the yoke member 7, the endless chain 9 is driven and the pusher 8 logs. The other end surface of the roll L is pressed toward the tip 1a of the winding shaft 1 to push out the log roll from the tip of the winding shaft. At this time, the supporting rolls 5 and 5 ′ are rotationally driven to rotate the log roll together with the winding shaft in one direction to wind up the tail of the paper cut by the cutter and push the entire other end of the log roll with the pusher 8. It is preferable to do so. Also, on the tip of the tip of the winding shaft,
It is preferable to dispose the log roll L pushed from the winding shaft by the pusher from above and below, and to provide the pulling conveyors 10 that are driven in the direction of pulling the log roll from the winding shaft in cooperation with the pusher. In this way, a log roll that has come off the winding shaft is obtained, and this log roll is then sliced into a plurality of toilet paper rolls with a log cutter.
Further, the winding shaft remaining in the forward movement position is removed from the yoke member 7 before the next log roll rolls to the forward movement position, and is made to stand by to be supplied to the winding position. The pusher also returns so that it is close to the yoke member before the next log roll rolls to the forward position.

The pusher 8 comes into contact with the other end surface of the log roll L and moves toward the tip 1a of the winding shaft to push the log roll from the tip of the winding shaft. While spraying and moistening the liquid on the inner circumference of the log roll, the inner circumference of the log roll is heated by an extended heating element provided at the tip of the winding shaft, and the entire inner circumference of the log roll is shaped as if ironed. To do. The liquid to be sprayed may be cold water or warm water, and may contain a low-concentration adhesive agent, or may contain a chemical agent such as a deodorant or an aromatic agent.

In FIGS. 6, 7 and 8, 21 is a shaft main body of the winding shaft, 31 is a heating body attached to the tip of the shaft main body in an extended manner, and the shaft main body 21 winds the log roll around the outer circumference, The collar 6 which is a little longer than the axial length thereof and is received by the yoke member 7 is provided at the other end of the shaft body. The shaft body 21 and the heating body 31 have the same outer shape, and in the illustrated embodiment, they have a gear shape having a large number of arcuate teeth, but of course they may be circular or polygonal. The shaft body 21 is made of metal or heat resistant synthetic resin, and the heating element 31 is made of metal.

The shaft main body 21 has a central hole 22 penetrating therethrough, and has a plurality of radial ejection holes 23 at its tip end, the inner end communicating with the central hole 22 and the outer end opening to the outer periphery. The tip of the center hole 22 is a shallow female screw hole 24 having a slightly enlarged diameter for attaching a heating body.

The heating body 31 has a through center hole 32 which communicates with the center hole 22 of the shaft body, and a male screw cylinder 33 protruding from an end surface facing the tip of the shaft body is screwed into the female screw hole 24 to thereby form the shaft body. Mounted on the tip of. The heating body 31 has an annular recess 34 that is open in the axial direction and is open on the end surface that is the tip of the winding shaft 1, and accommodates an electric heater 35 in the recess. Three
Reference numeral 6 is a power supply line to the electric heater. The power supply line extends from the heater 35 through the center hole 32 of the heating body and the center hole 22 of the shaft main body to the vicinity of the collar 6, and is opened in the outer periphery in front of the collar. A radial hole 25 opened so that one end communicates with the middle of the hole, and the other end passes through an axial hole 26 that opens to the end face of the collar 6. A concentric annular recess 27 is provided on the end face of the collar 6, and an annular electrode 37 is attached to the inside of the recess by an electrical insulating material, and the power supply line 36 is connected to the electrode 37.

Liquid is blown into the central hole 22 of the shaft body from the end on the side of the collar 6 by compressed air, and the liquid is jetted from the jet holes 23 to the outer periphery of the tip of the shaft body. Therefore, the radial hole 25 through which the power feeding line passes and the end portion of the central hole 32 of the heating element on the male screw cylinder side are closed with the sealing material 28, and the power feeding line 36 penetrates through each of the sealing materials. It is preferable that an annular groove 29 is provided on the outer peripheral portion of the shaft body where the ejection holes 23 are opened so that the liquid ejected from the ejection holes is uniformly attached to the inner periphery of the log roll. The length of the central tubular portion 38 surrounded by the annular recess 34 for accommodating the electric heater 35 is shorter than that of the annular recess, and the annular recess is detachably attached to the outer periphery of the annular recess by screwing the front lid 39 or the like. Close up. If the electric heater 35 breaks down, for example, the front lid 39 is opened and replaced with a new one.

At the forward position where the log roll L is placed on the support rolls 5 and 5 ', a liquid supply and a power feeding body 41, which is moved forward and backward by the piston of the air cylinder 40, are provided so as not to rotate so as to face the collar 6. . 42 is the air cylinder 40,
It is fixed at the forward position by a frame that supports a yoke member 7 that receives the collar 6. The liquid supply / power supply body 41 has a central hole 43 communicating with the central hole 22 of the shaft body, and a branch hole 44 having an inner end communicating with the central hole 43 and an outer end opening to the outer periphery.
Liquid is put into the outer end of 4, and compressed air is blown into the inside to connect a hose 46 from the liquid tank 45.

When the log roll L is placed on the support rolls 5 and 5'and the piston of the air cylinder 40 is extended (FIG. 8), the front end surface of the liquid supply / power supply body 41 comes into contact with the end surface of the collar 6. The central hole 43 and the central hole 22 of the shaft body communicate with each other.
Therefore, when compressed air is blown into the liquid tank 45, the liquid in the tank is compressed from the hose 46 to the center hole 4 by the compressed air.
It blows through 3, 22 and is jetted from the jet hole 23 to the outer periphery of the shaft body. An O-ring 47 surrounding the center hole 43 is partially protruded and attached to the front end surfaces of the liquid supply and power supply bodies, and the front end surfaces of the liquid supply and power supply bodies are elastically attached to the shaft main body via the O-ring 47. It is preferable to make contact with the end face and to seal the communication part of the central holes 43 and 22 with an O-ring.

A through hole 48 is provided in the liquid supply / power supply body in the axial direction, and an electrode pin 49 that comes into contact with an annular electrode 37 provided on the end face of the collar 6 of the shaft body is mounted in the hole. In this embodiment, a sleeve 50 made of an electrically insulating material is fitted in the through hole 48, an annular partition 51 is fixed in the middle of the sleeve, and the shaft portion 49a of the electrode pin 49 is fitted in the central hole of the partition 51. It is slidably threaded. The electrode pin has a head portion 49b having a large diameter that slides along the inner circumference of the sleeve, and the power supply line 52 connected to this head portion passes through the sleeve and is directed to the air cylinder 40 of the liquid supply / power supply body. Go out from the end face and connect to the power supply. Inside the sleeve is a plug 5 that allows the power line to pass through the center hole.
3, the coil spring 54 is interposed between the plug 53 and the head 49b of the electrode pin, and the head 49b of the electrode pin is pressed against the partition 51 by the coil spring. 6 is made to project outside from the front end surface of the liquid supply and the power supply body facing 6 A coil spring 55 fitted to the shaft portion of the electrode pin is located in front of the partition 51, and a protection cylinder 56 slidable in the sleeve is fitted to the shaft portion of the electrode pin, and the protection cylinder 56 is fitted by the coil spring 55.
The tip end of the electrode pin is made longer than the tip end of the shaft portion 49a and protrudes from the tip end surface of the power supply body to protect the tip end of the electrode pin shaft portion.

As described above, when the log roll L is placed on the support rolls 5 and 5 ', the piston of the air cylinder 40 is extended to supply the liquid and the tip end surface of the power feeder is brought into contact with the end surface of the collar 6. (FIG. 8), the protective cylinder 56 is pushed into the sleeve 50 against the coil spring 55, and at the same time, the electrode pin resists the coil spring 54 because the tip of the shaft 49a is pushed by the annular electrode 37 of the collar 6. However, it remains electrically connected to the annular electrode 37 by the elasticity of the coil spring. Therefore, the power supply line 52 is energized and the heating element 31
The electric heater 35 built in can be heated.
Further, even if the shaft main body 21 is rotated together with the log roll by the support rolls 5 and 5'and the annular electrode is integrally rotated, the tip of the shaft portion of the electrode pin maintains the contact state slipped on the annular electrode,
The electric heater can be heated.

As is clear from the above, the log roll L rides on the support rolls 5, 5'in the forward position, the front side of the collar 6 of the shaft body enters the crotch portion of the yoke member 7, and the pusher 8 pushes the log roll When pushing the end face to push out from the tip of the winding shaft, that is, the heating body 31 attached to the shaft body 21 in an extended manner, the piston of the air cylinder 40 is extended to supply the liquid, and the tip face of the power feeding body 41 is connected to the flange of the shaft body. 6, the compressed air is blown into the liquid tank 45 to eject the liquid from the ejection holes 23 to the inner periphery of the log roll, and at the same time, the switch of the power supply line 52 is turned on to the electric heater 35 incorporated in the heating body. Energize, heating body 3
Heat 1. The paper width of the log roll wound around the winding shaft is constant, and the time required for the pusher 8 to push the end face of the log roll and the end face to pass through the ejection hole 23,
Since the time required to get out of the heating element 31 is known, the compressed air is continuously supplied into the liquid tank until the end surface passes through the ejection hole 23 under the control of a timer or the like, until the heating element comes out. While the heater 35 is continuously energized during this period, the entire length of the inner circumference of the log roll is wetted with the liquid from the leading end to the other end in sequence, and the outer circumference of the heating body 31 heated by the heater 35 is heated to iron the iron. Thus, the shape of the inner circumference of the log roll removed from the heating body can be adjusted and solidified according to the sectional shapes of the shaft body and the heating body.

[0020]

As described above, according to the present invention, the inner circumference of the log roll L pushed out from the tear end 1a of the winding shaft 1 is sprayed with a liquid in the radial direction from the tip of the winding shaft to moisten it. The outer circumference of the heating element 31 attached to the tip of the winding shaft is rubbed against the outer circumference of the heating element to dry it, so that the entire length of the inner circumference of the log roll is ironed and fixed according to the outer shape of the winding element. Therefore, in the past, without causing the problem that the glue liquid was sprayed on the winding start portion of the paper in order to harden the inner circumference of the log roll, the inner circumference of the log roll was solidified, and the log cutter was used to cut it into slices. Can withstand pressure.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a state in which a paper is wound around a winding shaft to form a log roll at a winding position.

FIG. 2 is an explanatory diagram showing a state in which a wound log roll is moved to a forward position together with a winding shaft and a next winding shaft is supplied to a winding position.

FIG. 3 is an explanatory view showing a state where the other end of the winding shaft enters the crotch portion of the yoke member in the forward movement position.

FIG. 4 is an explanatory diagram showing a state in which winding is restarted at the winding position and pushing out of the log roll is started at the forward position.

5 is a side view showing the forward movement position of FIG. 4. FIG.

FIG. 6 is a cross-sectional view of a winding shaft (shaft body) and a heating body in a non-connected state.

7 is a sectional view of the shaft body taken along the line AA in FIG.

8 is a cross-sectional view of the connected state of FIG.

[Explanation of symbols]

1 reel 8 pushers 11 Inlet side friction roll 12 Outlet side friction roll 13 Rider roll 21 Shaft body (reel) 22 Center hole 23 Spout holes 31 heating body 32 center hole 35 heater 36 power lines 37 Ring electrode 40 air cylinder 41 Liquid supply, power supply 45 Liquid tank 46 hose 49 electrode pins 52 power line P paper R paper winding layer L log roll

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65H 18/00 A47K 10/16 B65H 19/30

Claims (2)

(57) [Claims] 1. A paper roll is wound around a winding shaft to form a log roll,
Next, in the method for manufacturing a log roll of a coreless toilet paper which pushes this log roll in the axial direction of the winding shaft and pulls it out from the tip of the winding shaft, while the log roll is being pulled out in the axial direction of the winding shaft, the tip of the winding shaft is pulled out. While spraying the liquid from the part to the inner circumference of the log roll, the inner circumference of the log roll is characterized by heating the inner circumference of the log roll with a heating body provided in an extended shape at the tip of the winding shaft. Production method. 2. In a roll of a log roll of a coreless toilet paper in which a roll is wound around the outer periphery to form a log roll, and the log roll is axially removed from the end, a heater is built in at the end of the shaft body of the roll. The heating element is attached in an extended shape, the shaft body has a closed front end, and a central hole through which liquid is blown from the other end by compressed air is provided. A winding shaft for a coreless toilet paper roll, characterized in that ejection holes are provided in the radial direction.