JPS5827186B2 - Coreless paper roll manufacturing equipment - Google Patents

Description

[Detailed Description of the Invention] This invention has a paper roll, especially compared to conventional toilet vapor rolls, which has no paper tube on the inner periphery and has an extremely small inner diameter, which makes the outer diameter the same as that of conventional toilet vapor rolls. The present invention relates to a coreless paper roll manufacturing apparatus suitable for highly efficient production of toilet paper roll bases in which toilet paper is wound much longer than in the past.

Toilet paper rolls and their manufacturing equipment, in which there is no paper tube on the inner periphery and the paper is rolled up from the center, and its manufacturing equipment were developed in the 5th year of Utility Industry.
0-129440 and Japanese Patent Application Laid-Open No. 50-138107 by some of the applicants of this patent.

This prior art involves winding paper onto a thin winding shaft and then removing the winding shaft, but the idea was initially to wind the paper in a soft manner so that it could be easily pulled out at that time. hand,
1 does not disclose how to mechanically pull out the winding shaft.

In fact, as a result of various experiments, if the winding is done softly for a while at the beginning of winding, even if the winding is hardened afterwards, the winding shaft can be pulled out relatively easily, especially when the winding shaft is pulled out manually. suitable for

However, it is not preferable to manually remove the winding shaft from the roll after it has been wound up, as this hinders productivity.

In addition, the hole where the roll shaft was removed, which is formed in the center of the original soft roll layer, is crushed by the tightly wound roll layer on the outside, and the hole that was created when the roll shaft was removed is crushed by the outer tightly wound roll layer. When passing it through, there are also problems such as difficulty in passing it through.

Then, the surface of the winding shaft is plated with hard chrome or treated with Teflon to form a layer with low friction, and/
Alternatively, before winding up the paper, apply an anti-friction agent such as silicone or talcum powder.
If the powder is applied and the friction is reduced in this way, then after winding is completed, one end of the roll shaft is firmly held and one end of the roll is mechanically pushed forcefully toward the other end of the roll shaft, and the initial result is obtained. It has been found that it is possible to remove the paper roll from the roll even if the paper roll is wound up somewhat tightly.

It has also been found that if the material is wound tightly in this way at the beginning, and then wound more softly in Completion 1, the hole where the winding shaft has come out does not deform at all and does not impede the insertion of the holder shaft.

Therefore, the present invention is based on the above knowledge confirmed through various experiments, and unlike previous proposals, the winding shaft winds up the necessary amount of paper at the winding position, and after winding is completed, the paper roll is moved to the next punching position. The paper roll is moved together with the paper roll, and while the next winding is being carried out at the winding position, one end of the paper roll is held at the punching position, and the paper roll is rotated in a direction that will prevent it from unwinding, while the paper roll is moved toward the other end of the paper roll. is pushed out from the roll shaft, and thus winding and punching are performed continuously and consistently to produce paper rolls with high efficiency.The present invention will be described below with reference to an illustrated embodiment. explain.

Reference numeral 1 denotes a machine body, which has left and right side walls 1a and 1b facing each other with a gap sufficiently wider than the width of the paper P to be rolled up, and bearings are placed on each side wall in the front and rear, and between the front bearings. is front axis 2,
A rear shaft 3 is rotatably installed between the rear bearings.

Stops 2a are provided on the front and rear axles, respectively, a little apart from the facing surfaces of the respective side walls.

Install 2a, 3a, and 3a, and the left stop wheel 2a s3a
Between the stop wheels 2a and 3a on the right side, chains 74 and 4 of the same length are stretched as endless interlocking circulation supports, respectively.

A plurality of pairs (5 pairs in this embodiment) of elongated supports 5, 5 having elongated holes are attached to each chain 74, 4 at a constant pitch dividing the entire circumference thereof toward the outer circumference. Rotation is transmitted counterclockwise from a motor and a speed reducer to one shaft, for example 3, so that the left and right checks 74 and 4 are synchronized and intermittently circulated according to the mounting pitch of the support.

Each pair of supports is configured such that each end of a thin winding shaft 7, for example, having a diameter of about 0.5 to 2 CrfL, for winding paper through the elongated holes 6, 6 can be rotated in the longitudinal direction of the hole. The support is movable, and the elongated hole is open at the tip of the support, and each winding shaft has a head 7' or the like having a diameter larger than the width of the elongated hole at one end (for example, the left end). Even if it is pulled toward the other end, it is stopped by one of the pairs of supports, for example the left one, so that it does not come off.

At least the other (i.e., the right) support 5 is pivoted to the link of the chain 74, rotates outwardly away from the right end of the winding shaft, faces sideways, and connects the right end of the winding shaft to the elongated hole. (Figure 4 chain line).

As mentioned above, there are five pairs of supports in this example, so
Che 74, 4 is counterclockwise (first
There are three stopping positions in the upper measuring movement area of the chain and two places in the lower measuring movement area. In Figure 3, the left front side is the winding position for winding the paper P onto the winding shaft, and the right front side is the punching position for pushing out the wound paper roll from the winding shaft.

Follow the movement trajectory of the tip of the support to guide the winding shaft supported between the midwinter supports with the tip facing down in the lower measurement area of the chain, but only in the area of the winding position and punching position. is omitted and the guide 8 is attached to the opposing surface of each side wall,
In the section of the winding position and the section of the punching position where the guide 8 is missing, auxiliary guides 9, 9 and 10.1 are provided that match the length of each section.
0 is attached to elevating actuating bodies 9a and 10a such as air cylinders fixed to each side wall, and when raised by the elevating actuating bodies, the missing section of the guide 8 is connected.

Missing section or auxiliary guide 9 at the winding position of the guide
The length of the guide should be longer than the diameter of the roll shaft, and the length of the removed section of the guide or the auxiliary guide 10 at the punching position should be long enough to allow the paper roll to pass through when punching out the paper roll R, as described later. .

Two wooden surface drive rollers 11 are disposed in close proximity to each other in a circumscribed manner below the cutout section extending to the winding position of the guides 8, 8.
There is a roughly ■-shaped valley with an interval of 11 to receive the winding shaft 7, and below the cutout section leading to the punching position, there are two wooden support rollers 12 spaced apart in the front and back direction. There are 12,
It is designed to receive the paper roll R.

The surface drive roller and support roller are installed between the left and right side walls, respectively, and the surface drive roller rotates in the direction of the arrow in FIG. The paper P drawn out from the original fabric roll y supported at the front end is wound up into a container, and the paper P is stopped when the required length has been wound.

This surface and drive roller are similar to the well-known 201-L type surface and drive winding device, and while the surface drive roller is rotating, the original roll y is also synchronously rotated at the required rotational speed in the direction of feeding out the paper P. You can also rotate it.

Further, the support rollers 12, 12 are also rotated in the direction of the arrow in FIG. 3 in the same way as the front surface 1 drive roller, and the paper roll R riding on them is rotated in a direction that does not unwind the paper.

A cutting device 13 for cutting the paper P in the width direction is provided between the winding position and the punching position.

In this cutting device, after winding is finished at the winding position, the left and right chains 4, 4 advance one pitch, and as a result, the paper roll R at the winding position unravels a small amount of paper, and then the support roller at the punching position This is for cutting the paper in both positions after it has finished moving above 12, 12. It is normally retracted to a non-working position where it does not act on the paper, and when it has finished moving, it sticks out and performs the cutting. For example, it may be a blade attached to a piston such as an air cylinder, but in this embodiment, the blade is constantly tensioned between swinging arms 13b that are swung by air cylinders 13a fixed to the left and right walls, respectively. is submerged in the aquarium 13c and contains water, and when the swinging arm 13b is pulled up by the operation of the air cylinder 13a, it contacts the paper from below between the winding position and the punching position, and the contained water spreads the paper wide. This is the rope 13d that is cut in the direction.

At the start of winding, the paper wound on the winding shaft is brought into contact with the winding shaft 7 held between the surface 1 drive rollers 11 and 11 from above by a roller during winding, and the paper against the winding shaft is brought into contact with the winding shaft 7 from above. There is a rolled ball adjusting device 16 for adjusting the rolled balls.

In this embodiment, this adjusting device has one end fixed to both ends of a shaft installed between the front walls of the left and right walls, and the other end is a pair of left and right swinging arms 16a that can face the winding position from above.
, 16a, a touch roller 16' installed between the other ends of both swinging arms and in contact with the winding shaft or the paper on the winding shaft, and side walls 1a, 1.
It consists of a pair of control air cylinders 16b, 16b, whose cylinder ends are pivotally connected to a frame 1' assembled above b, and whose piston ends are pivotally connected to swing arms 16a, 16a, respectively. The cylinder is controlled by a timer or the like for the first few seconds of the start of winding to press the swinging arm 16a16a, and the touch roller 16' presses the winding shaft or the paper wound thereon against the surface drive roller 1111. Thereafter, as the diameter of the paper roll increases as the paper is wound onto the winding shaft, the swinging arms 16a, 16a are gradually pulled up, and the touch roller is brought into light contact with the paper when the winding is complete. At the beginning of winding, the paper is tightly wound around the winding shaft, and thereafter, when winding is completed (1), the paper is wound relatively loosely.

However, the winding ball adjustment is done using the air cylinders 16b and 16 as shown below.
Unlike this, the swinging arm is gradually pulled up as the paper roll grows, but it is also possible to apply pressure with a consistent pressure from the start of winding to completion 1. It is also possible to pressurize weakly at the beginning, and then pressurize strongly after completing step 1.

Then, when the winding is completed, the swinging arm 16a.

There is a retracting device 17 for retracting the retractor 16a above the winding position by turning the retractor 16a upwardly (as shown by the chain line in FIG. 1).

In this embodiment, the retraction device 17 connects the cylinder end to the swing arm 16.
an evacuation air cylinder 17a pivotally connected to the frame 1'; and a long hole having one end pivotally connected to the frame 1', supporting the cylinder 17a slidably in the longitudinal direction at the other end, and guiding the piston end thereof. It consists of a support plate 17b with a control cylinder 16b having a swing arm 16a as the paper roll grows.

When gradually pulling up 16a, use the evacuation cylinder 17a.
rises along the support plate 17b.

Therefore, during winding, the evacuation cylinder 7a is connected to the support plate 17b.
When completed, the piston is retracted and the swinging arms 15a, 16a are pulled up and retracted above the winding position.

At this time, since the pistons of the control cylinders 6b and 16b must also be retracted, it is necessary to change the valve so that one air is ejected from the cylinders by the retracted pistons.

Furthermore, when the retracting cylinder 7a retracts the piston to pull up the swing arm 16a, it initially moves downward on the support plate and returns to its original state, and then the retraction of the piston pulls the swing arm. Become.

The length of the paper wound onto the reel at the start of winding is detected by a well-known detection mechanism, and when the value reaches a set value, the surface drive roller etc. are stopped and the winding is completed.

Therefore, the stop signal switches the valves of the control cylinder and the evacuation cylinder to evacuate the rolled ball adjusting device 16, and after the time required for evacuation, the left and right checks 74, 4 are moved one pitch using a timer or the like. Bye.

Below the spacing between the support rollers 2 and 12 of the punching device is a punching device 18, which is an endless punching machine 1 along the said spacing.
8a is stretched between the left and right stop wheels 19a and 19b, and two pressing members 20 are fixed to the check 718a at equal intervals.

This suppressing member 20 passes through the gap between the support rollers 2 and 12 when moving in the upper movement area of the checker 7, and presses one end surface (left end surface) of the paper roll rightward from the other end. 7, it has an elongated groove 20' with an open end.

Rotation is transmitted to one of the stop wheels 19a through a motor reducer, and the check 718a is intermittently rotated in the direction of the arrow in FIG. 2 at a pitch of approximately the entire length.

When the punching device 18 pushes the paper roll R to the right with the punching member 20, the auxiliary guide 10 is lowered so as not to obstruct this, and at the same time, the right support at the punching position is pulled upward as described above. , let him lie down.

For this reason, the right support has a right-angled downwardly bent arm 5'.
The arm 5 is made to protrude toward the side wall 1b, and this arm 5 is attached to the side wall 1b.
An actuating device 21 is provided, such as an air cylinder with an actuating plate 21' attached to the lower end of which hooks the sheet from below.3 Of course, the side wall 1b is used to pass the paper roll R that is punched out from the roll shaft by the punching device 18. A conveyor 221, for example, an endless belt type conveyor, is provided on the outer surface of the side wall 1b to exit through the space 1b', place the roll of rice filter paper, and carry it out in the drawing direction, and if necessary, a conveyor 221 is provided. Another auxiliary conveyor 22' may be provided above, cooperating with this conveyor to sandwich the paper roll R.

A guard 23 may be provided as an extension of the right guide 8 in order to prevent the user from accidentally falling down and lying down when the right support on which the user can lie down is in the upper movement area.

Similarly, it is preferable that this right support is attracted to the link of the check 7 by a permanent magnet and held so that it always faces toward the outer circumference.

It is assumed that the operation of this manufacturing apparatus has been clarified through the above explanation, but this will be supplementarily described below.

The left and right checks 74, 4 advance one pitch, and when one of the pairs of supports facing downward reaches the winding position and the other one reaches the punching position with the paper roll, it raises and guides the paper roll. 8,8
The auxiliary guides 9 and 10, which were connected to the auxiliary guides 9 and 10, respectively descend (solid lines in Figures 3 and 4).As a result, the winding shaft falls from the pair of slotted holes in the support at the winding position, and the surface and drive roller IL
At the same time, the cutting device 13 cuts the paper between both positions, and the winding adjusting device 16 cuts the paper between the two positions.
’ to hold the winding shaft against the valley.

Next, the surface 1 drive causes the rollers 11, 11 to start rotating and wind the paper onto the winding shaft.

As the winding progresses, as described above, the winding ball adjustment device gradually moves upward and applies a predetermined controlled winding ball to the paper and the winding shaft.

At the same time, the winding shaft rises as the winding progresses, and both ends of the winding shaft move into the slotted holes of the support.

When the length of the paper wound on the winding shaft reaches the required set value, the surface drive roller stops rotating and the evacuation device 17
is activated, the winding ball adjusting device is retracted above the winding position, and the auxiliary guide 9 rises to connect with the guide 8.

During this time, at the punching position, the paper roll is punched out from the winding shaft in the following manner.

Simultaneously with the lowering of the auxiliary guide 10, the actuating plate 21' rises to lay down the right pair of supports in the punching position, releasing the right end of the winding shaft.

Then, the support rollers 12, 12 rotate, and the paper roll placed thereon is rotated in a direction in which the paper is not unwound.

Next, the die 718a of the punching device 18 and the unloading conveyor 22 start moving, and the pressing member 20 fixed to the die 718a starts moving.
moves to the right and collides with the left end surface of the paper roll, slowly pushes the paper roll to the right and pushes the right end side of the paper roll against the side wall 1b.
from the space 1b' and place it on the carry-out conveyor 22.

At this time, since the paper roll is placed while being rotated by the support rollers 12, 12 as described above, the punching member can smoothly punch the paper roll from the roll shaft.

As described above, in this embodiment, two pressing members are fixed at equal intervals around the entire circumference of the chino 18a.

For this reason, the chino 18a works for a length slightly shorter than half a revolution and then stops once, and at this time, the pressing member that was pushing the paper roll hits the wooden part of the upper movement area of the chino 18a. The entire length is transferred to the carry-out conveyor 22 and carried out by the carry-out conveyor 22, and the filter paper roll is overlooked.

Then, when the left side of the paper roll pushed by the pressing member passes over the auxiliary guide 10 and the left end of the paper roll has not been pulled out from the right end of the first roll shaft, the auxiliary guide 10 rises to its original position where it connects with the guide 8. do.

This is to prevent the right end of the winding shaft from falling off and bending at a distance of 12° from the rollers when the left end of the paper roll is pulled out from the right end of the winding shaft.

The rising timing of the auxiliary guide can be determined by, for example, using a photoelectric detection device to detect when the left end of the paper roll passes over the auxiliary guide, or by detecting when the right end of the paper roll reaches the position on the delivery conveyor. This prevents the auxiliary guide from rising before the left end of the paper roll has passed, obstructing the paper roll's unloading, or damaging the paper roll.At the same time, the right end of the winding shaft can be 12.1
It is also possible to prevent the product from falling off at intervals of 2 and causing a malfunction.

When the auxiliary guide 10 is raised, the ceno 18a moves the remaining short distance, thereby bringing the other pressing member into a waiting position for pressing the left end of the next paper roll.

Similarly, it is advisable to apply an anti-friction agent to the winding shaft after the paper roll is punched out and before it goes to the next winding position.

When both the winding and punching processes are completed in this way, Cheno 4
, 4 moves the next one pitch, places the next pair of supports in the winding position, and transfers the wound paper roll between one of the adjacent surface drive rolls and one of the support rolls. Climb over the top and reach the push-out position, and at the same time as the cheno stops,
Alternatively, the cutting device cuts the paper between the winding position and the punching position after a short delay, and repeats the above-described operation.

According to the above explanation, among the auxiliary guides at the punching position, the left one located on the side wall 1a (llllk) is not involved in punching out the paper roll, so it will be omitted, and the left guide 8 fixed to the side wall 1a will be omitted. It is also possible to provide a cutout section only at the winding position.

Alternatively, the left and right pairs of supports may be made in the same shape, and the left one may be immovably fixed to the link of the chino 4 by welding, bolting, etc., and only the right support may be pivoted to the link of the chino 4.

In this case, it is possible to omit providing an extended guard on the left guide.

Furthermore, although the supports 5, 5 are attached to the chenos 4, 4, the same effect can be obtained by using a rotating disk instead of each cheno and attaching the supports 5, 5 radially to each disk.

In this way, while the paper is being wound up at the winding position, the paper roll that has been wound up is punched out from the winding shaft, and the paper roll such as a toilet paper roll base without a paper tube is produced with extremely high efficiency. Can be manufactured automatically.

Of course, the set for wrapping is not necessarily limited to toilet paper, but in the case of toilet paper, even if it is one ply, it may be two plies.
A plurality of plies may be used, and the manufactured toilet paper roll base body may be cut to a required length in the axial direction to form individual toilet paper rolls.

Furthermore, the elongated hole of the left support does not need to open at the tip of the support.

In particular, the present invention rotates the paper roll in a direction that does not unwind the paper at the punching position, and during the rotation, the pressing member 20 is applied to one end of the paper roll, and the pressing member 20 is moved toward the other end to prevent the paper from unwinding. Push it out.

Therefore, compared to punching without rotating the paper roll, the pressing member 20 evenly presses the entire surface of one end of the paper roll, making punching easier and less likely to cause damage or deformation of one end of the punched paper roll. It has excellent features.

In the description of this embodiment, the words "left" and "right" are used based on FIG. 2 for convenience, and the technical idea of the present invention is not limited to left or right.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an overall survey view, FIG. 2 is a front view, and FIG. 3 is an enlarged plan view of the main parts.
FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.
4, 4 is an example of a circulating support body, 7.5 is a support, 6 is a long hole, 7 is a winding shaft, 11.11 is a surface drive roller, 12.12 is a support roller, 18 is a punching device, 20 21 indicates a punching member, and 21 indicates an actuating device for turning one side of the support sideways.

Claims (1)

[Scope of Claims] 1. A plurality of pairs of supports each having an elongated hole in a left and right set of circulating supports, such as an endless circulating check 7 and a rotating disk, which are interlocked with each other, are arranged in a plurality of pairs, facing toward the outer circumferential direction. Attached at intervals, each end of a thin winding shaft is passed through each pair of slotted holes in each support, so that one end of the winding shaft is irremovably held against one of the supports of the pair, and at least the other end of the support is is rotated away from the other end of the winding shaft so that it can be turned sideways and the other end of the winding shaft can be released, and the circulation support is rotated intermittently at a pitch of one integer of the number of pairs of supports. One of the two stopping positions where the supporting tool is facing downward, which is on the near side, is the winding position, where the winding shaft supported by the pair of supporting tools is received. Two surface-driven rollers for winding the paper on the outer circumference of the winding shaft are arranged close to each other, the other stopping position of the first feeder is the push-out position, and the paper rolled up on the winding shaft is Two support rollers on which the roll is placed and supported are arranged with a distance maintained in the front and back direction, and a pressing member moves along the distance between the support rollers and presses the end face of the paper roll facing one end of the winding shaft. A punching device for pushing and punching out from the winding shaft, and an actuating device for rotating the rotatable support through which the other end of the winding shaft passes in a direction away from the winding shaft and releasing the other end of the winding shaft are provided. At the same time, the two support rolls on which the paper roll is placed and supported at the punching position rotate in the same direction when the paper roll is punched out from the winding shaft, so that the paper roll is rotated in a direction that does not unwind the paper. Coreless paper roll manufacturing equipment. 2. Press the button on the coreless paper roll manufacturing apparatus according to claim iK to guide the roll shaft supported between each pair of supports located in the lower travel area of the circulation support and having their tips facing downward. A guide for this purpose is provided with a section removed from the winding position, and an auxiliary guide that can be lowered is separately provided in this section. When the winding shaft reaches the auxiliary guide, the auxiliary guide is lowered and the surface Coreless paper roll manufacturing equipment in which the roll shaft is received between drive rollers. 3. In the coreless paper roll manufacturing apparatus Ki according to claim 1 or 2, the supporting device is located in the lower travel area of the circulating support member and is supported between each pair of supporting devices with the tip facing downward. A guide for guiding the paper roll is provided in a section cut out from the punching position, and an auxiliary guide that can be lowered is separately provided in this cut section, so that the punching device pushes the paper roll from the rear end. The auxiliary guide is lowered prior to punching, and the auxiliary guide is raised again to its original state before the rear end of the paper roll passes over the auxiliary guide and does not come off the other end of the roll shaft. Coreless paper roll manufacturing equipment.