JPS60148862A - Roll paper winder - Google Patents

Abstract

PURPOSE:To produce roll papers continuously through simple structure in winder for toilet paper, by juxtaposing two winding rollers with such interval as allowing passage of core than facing the supply port of core feeder above said interval. CONSTITUTION:A core 13 fed from a supply port 18 will rotate above winding rollers 11, 12 arranged through small interval then pushed through lowering of an endless belt 30 to wind paper 5 between a receiving roller 19 energized upwardly by means of an air cylinder 37. Upon winding by predetermined length, take-out section 42 will rotate while the receiving roller 19 will lower to stop the roll paper between a holding table 47 and take-out section 42 thus to start loosening of paper 5. Here, a new core 13 is pushed through the endless belt 30 and the paper 5 blown through air injection from a nozzle 49 to the winding roller 12 side is wound over the core 13 through rotation of winding roller 12, core 13 and endless roller 30 then cut and fed thus to start winding over the new core 13 through lifting of the receiving roller 19.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes a
This invention relates to a paper winding device that holds a core supplied within one winding roller interval so that it does not fall.

In a winding device that feeds a core between winding rollers and winds paper around the core while supporting the core from below on a receiving roller, the receiving roller is used to unwind the core after winding. must descend. For this reason, a support device is required to support the core to be wound next after it has been fed into the space between the rollers. However, the provision of such a support device complicates the structure of the winding device and may cause malfunctions.

In addition, the winding device described in Japanese Patent Application Laid-Open No. 2003-190012-1 has a suction mechanism mounted on the first lower drum and cuts the paper using the suction force of the suction mechanism, but it is still complicated. It is a structure that suffers a lot of damage, and there are many reasons for failure.

The present invention has been proposed in view of the above, and consists of two winding loans arranged one behind the other with an interval through which all the winding cores pass, and a winding roller that supplies all of the winding cores within the interval between the winding rollers. The supply port of the core feeding device is placed above the winding roller interval, and when the winding roller interval rises, it is supported by the winding core metal and the entire paper is wound onto the core. The receiving roller, which lowers the finished core from the interval between the take-up rollers when it is taken out, can move up and down, and a variable speed mechanism is installed that rotates the rear take-up roller at a higher speed than the front take-up roller. It connects to the roller to prevent the winding core from falling from the gap between the winding rollers due to the difference in circumferential speed between the front winding roller and the rear winding roller, and also to prevent the paper core from falling from the gap between the winding rollers and the paper on the circumferential side of the rear winding roller. It is an object of the present invention to provide a winding device for a paper wrapper that can completely securely hold the paper and wind the paper completely securely around the circumferential side of a core supplied between two take-up rollers.

The present invention will be explained below based on the drawings of an embodiment in which the present invention is implemented as a toilet paper winding device.As shown in FIG. A base paper loading section 3 is provided on which the base paper can be placed freely, and at the end of the frame there is a feed belt mechanism q that feeds the base paper in contact with the outer peripheral surface of the rolled base paper λ, and a feed belt mechanism q that feeds the base paper in contact with the outer peripheral surface of the rolled base paper λ. Feed the paper upwards
A guide roller 6 for laterally guiding the guide roller B is provided, and on the downstream side of the guide roller A, there is provided a fixed blade receiver 2 and a perforation row 29 having a perforation blade S attached to the outer circumferential surface thereof, which are vertically opposed to each other. A perforation carving mechanism 10 is provided, and the perforation carving mechanism /θ
On the downstream side of the winding core, two horizontally elongated winding rows 'j//, /2 are arranged in front and back with the outer diameter of the winding core /3 being the same or with a slightly narrower spacing. And the above-mentioned feed belt mechanism,
The perforation roller and the front take-up roll /l are each mechanically connected to a full drive source (not shown) so that they rotate at the same feed rate.

Here, as shown in FIG. 2, the rear winding roller 7.2 has a large number of circular recesses/, which pass through the layer surface metal, in the center of the circumferential surface of the winding roller 7.2. 2A are formed in three rows around the circumferential surface metal. Also, both take-up rollers//
, /2 are connected to a transmission mechanism L which can rotate the rear winding roller at a higher speed than the front winding roller at a predetermined time.

As shown in Fig. 2, the transmission mechanism /da includes a transmission pulley /6a, /Abf, which can be hung with a V-belt and whose diameter can be changed, /2 shaft /
/', added to 7.2', both gear shift Gary /A.

, /AbVCV belt is stretched continuously variable transmission, the effective diameter of the speed change pulley /Aa attached to the front take-up o-77/ is increased, and the speed change boot is installed between the rear take-up rollers. IJ /4 By reducing the effective diameter of b, Q
The rear winding roller 1 can be rotated at high speed as well as the front winding roller 1.

As the transmission, a cone-type continuously variable transmission using a conical belt pulley or other known transmission mechanism can also be used.

Above the interval between the winding rollers // and /2, there is a supply port /g of the winding core supplying device /7 that supplies the winding core 132-Kinai within the interval.
A receiving roller /9 that supports the winding core /Jf from below, which is supplied from the winding core supply device 17, is provided vertically movably below the above-mentioned interval.

The core supply device/7 shown in FIG. 1 has a large number of cores/3...
A storage box 20 for storing ・2 core take-out rollers that take out the core 3 from the outlet 2 of the storage pass 3 and enter it into the groove 2; A guide gutter 23 that guides the winding core /, which the rollers 2 have rotated to release the winding core /3 to the supply port /g at the lower end; , 7 winding cone //.

A core feeding mechanism that feeds cores within an interval of /2! The supply port /g of the guide trough 23 is provided with a flat spring, u' (il-), whose lower end is inserted into the supply port /g of the guide trough 23. When the winding core /3 in the expansion groove 2/ is fed into the guide gutter 23, the winding core /J rolls down the guide gutter 23 and flows down to the bent part of the flat spring 8 at the supply port /g. The winding core /3F'i waits at the supply port /g, and the winding core is fed out within the interval of the winding roller //, /2 by the core feeding mechanism. The feeding mechanism 2'l sends an empty paper waiting at the supply lower g immediately before the winding core /3 within the interval between the winding rollers l/, /, 2 winds a predetermined length of paper S. Any structure may be used as long as the core 3 is forcibly fed out.The core feeding mechanism shown in FIG. An upper sprocket is provided with a metal fitting so that it can rotate separately from the roller/2, and an oblong bearing shaft 2gf is provided along the length direction of the rear winding roller/unit at the tip of the arm rod nearer added to the subrocket unit 6. An endless belt is attached to the tip of an arm 29 extending forward from the middle of the bearing shaft 2g, and is stretched in a triangular shape by jOf small pulleys 3/..., and the upper sprocket ram and the lower sprocket 32 are connected to each other. The cam follower plate provided on the lower tin rocket 3.2 comes into contact with the circumferential surface of the first cam 3S.Therefore, when the first cam 35 rotates, the cam follower plate is connected to the lower tin rocket 3.2. 2' (i - Rotates counterclockwise in Fig. 1, and as a result, the upper tin rocket 2A rotates counterclockwise through the chain 33. When the upper sprocket 2B rotates, the arm rod 2
7 rotates integrally with the upper sprocket, the belt 30 at the tip of the arm 29 moves forward and fits above the supply lower g through the notch (not shown) in the guide trough 13, and the supply port/
By pressing from above against the bias of the winding core ia2 flat spring J waiting at g, the winding core /, 1 can be sent to the upper part of the interval between the winding rollers //, /2. . The timing for fully feeding the winding core/3 is when the winding core/3 is within the interval between the winding rollers l/, /-.
This is just before winding up of a predetermined length of paper S is completed. Winding core/
To detect the length of the paper S wound around J, for example, a detector (not shown) consisting of a cam and a switch is provided in the rotation system of the perforation roller 9, and the detector detects the rotation of the perforation roller 9. The predetermined number of rotations, that is, the length of the paper S transferred by the perforation roller.

The winding core /3 that has fallen from the supply lower g is moved to the winding roller //,
Since the interval between /2 is the same as the outer diameter of the winding core /3, or is slightly narrower than the outer diameter of the core /3, as shown by the solid line in Figure 3, it does not pass downward through the interval, and both Take-up roller /'/
, /2 rotates multiple times due to the rotation of both rollers //, 7.2. When the endless belt 30 further descends and touches the winding core /3, the endless belt yo rotates due to the rotation of the winding core /3 and takes up the winding core /3 by the winding roller l11/.
, into the narrowest interval of 2. The winding core 3 is made of a hollow pipe made of cardboard or the like, so it is an endless belt 3.
When pressed from above by 0, it deforms slightly into an elliptical shape and can pass through the narrowest interval between the take-up rollers // and /2 while rotating. After passing, the cross section returns to a perfect circle due to elasticity, as shown by the dotted line in Figure 3.

The receiving roller /9 receives the winding core 1 supplied as described above.
The winding core 13 is supported by the winding increasing roller
The paper 5 is wound around the paper 5, and the winding core/J is a predetermined length, for example, AO
When the winding of m paper is finished, the winding roller descends and the winding roller //,
This allows the winding core/Jf to be taken out from an interval of /2. The receiving roller 9 shown in FIG.
It is designed so that it can be moved up and down by an air cylinder 3 connected in the middle of the rotating rod 3B. One end of the regulating rod 3g is fully extended between the rotating rod 36 and the rond 37' of the air cylinder 37, and the middle of the regulating rod 3g is pivoted to the frame, and the cam 7 lowerer 39 is provided at the other end. wo eccentric cam l/
-0, the top dead center of the receiving hole -0 can be appropriately set by fully adjusting the stop position of the eccentric cam lIo.

Therefore, when the eccentric cam lθ is appropriately adjusted and air is force-fed to the air cylinder 37, the roller /9 rises to a predetermined height, and the winding core /3 is moved to the optimal height of the interval between the winding rollers // and /2. I can support you. The optimum height of winding core/3 is:
As shown by the dotted line in Figure 3, the center of the winding roller //, /2 //〃,, /2N The height at which the center of the winding core /, j /J' is located slightly below the connecting straight line 1. It is. When the winding core /3 is supported at this height, the winding core /J is supported by both winding rollers /
It is supported by simultaneously contacting the circumferential surfaces of /, /2 and the circumferential surface of receiving roller /9. Therefore, in this state, when both winding rollers //, /2f rotate clockwise in Fig. 1, , the winding core/J rotates efficiently without slipping counterclockwise due to friction, and the paper S sent from the perforation forming mechanism 10 can be efficiently wound up. Since the winding core /3 is supported in three places as mentioned above, the paper S can be reliably wound without bouncing or slipping even when the winding rollers //, /2f rotate at high speed. You can take it. Therefore, even a conventional winding device can wind the film at high speed and efficiently.

When the core /J winds up the entire paper S, the outer diameter gradually increases as shown in FIG. 5. Therefore, the receiving roller /9 gradually descends. Note that even if the receiving roller /9 gradually descends, the winding core /
3. The circumferential surface of the paper that was rolled up on both take-up rollers //, 7.2
Since it is always pressed against the circumferential surface of the paper S and the circumferential surface of the receiving roller 9, even if the paper S is wound up at high speed, no wrinkles will appear, and the paper S can be wound up more tightly than before. Further, by adjusting the pressure of the cylinder 37, the winding pressure of the paper to be wound around the core/3 can be adjusted.

When the winding core/J winds up a paper S whose length is slightly shorter than the predetermined length, for example, about J9 m out of 60 m, as mentioned above, the perforation detector installed in the rotation system of the perforated roller transmits a signal, and in response to this signal, the winding core delivery mechanism operates, and as shown in Fig. 6, the endless belt 3θ begins to suppress the winding core /3f waiting at the supply port /g. . By the time the core J on the receiving roller 9 winds up a predetermined length of paper, the endless belt 30 is empty as shown in FIG.
3. Insert the entire winding roll into a space of 1. When the winding core /3 on the roller /9 winds up a predetermined length of paper, as shown in Figs.
In the groove roof..., a take-out arm 3 having a take-out center at its tip is connected to an interlocking rod + connected to the base end of the arm '73.
ll and the second cam llt which abuts on the left side of the cam follower at the lower end of the interlocking rod lI+, rotates υ, and as the take-out portion comes into contact with the wrapping paper, the receiving roller /9 begins to descend. When the take-out center comes into contact with the paper wrapper as shown in FIG. 7, the paper roll rolls from above the receiving roller/9 onto the nip 11.7 as shown in FIG. It is sandwiched and stopped between 4t7 and the take-out part ll-,2. Even if the paper wrapper stops, the take-up rollers // and / continue to rotate, so the paper S fed from the perforation mechanism 10 begins to loosen as shown in FIG. The front take-up roller // groove l...
Inside, a nozzle 9 is provided that injects air obliquely from below toward the interval between the take-up rollers //, /, and 2. Therefore, when air is ejected from both nozzles, the loose paper S is blown away as shown in FIGS. Ru.

At this time, since a circular depression is provided on the circumferential side of the rear winding roller 7.2, the winding roller
The paper S is brought into close contact with the circumferential side of the rear take-up roller /2 by the air jetted diagonally from below toward the interval of /2. Shabu/
It will be embedded in U-A. Therefore, while a portion of the paper S is inserted into the recessed part /, 2A, the rear winding roller /, 2 is sandwiched 'il'? An extremely strong tensile force is generated at the end of the winding of the wrapping paper that is stopped at the top, and this tensile force cuts the paper between the winding roller /2 at the rear and the wrapping paper.

Therefore, the paper cutting process and the core feeding process can all be performed without changing the feeding speed of the paper fed between the winding rollers // and 7.2.

The winding core /3, which has been completely wound with a predetermined length of paper as described above, is rolled by the tilting of the sandwiching gua, as shown in Fig. 11.
Place it on top of the seaming machine and tighten it.

On the other hand, υ winding roller /, /2 by the core feeding mechanism 2
As shown in FIG. 8, the empty winding core /3 fed within the interval of
, /2, and passes from top to bottom by being pressed against the inner metal endless belt 30 with the narrowest interval of . At this point, due to the action of the transmission mechanism /lI, the rear take-up roller /
Yoυ is also rotating fast. Therefore, the take-up roller //,
The winding core /3 located at the narrowest interval between /2 receives an upward force due to friction with the winding roller /2 at the rear. At the same time, the endless belt 30 completely suppresses the rise. For this reason, the winding core/
3 is a receiving roller at the bottom of the input/take-up roller without 9//
, 12 without falling, rotates counterclockwise in the drawing, winds up the end of the paper 3 cut in the cutting process, and starts winding up the paper S. Namely, paper! If, at the moment of cutting, the cutting area of the paper S comes into close contact with the circumferential side of the rear winding roller/2 due to the air ejected from the nozzle gouger, and a part of the paper S is buried in the recessed part/core A. The cut end of the paper S is securely held by the rear winding roller 12.

Then, by rotating the rear take-up roller 2 while holding the cut end of the paper S on the side surface around the entire circumference, the cut end of the paper S is
Following the rotation of the rear winding rollers /2, the winding core 13 is guided and wound onto the winding core /3 reliably without touching the circumferential side of the winding core 13.

In this way, the winding roller //, the supply bag n between 72 winding cores /3
As shown in Fig. 12, even without the support of the receiving roller /9 from below, it is held due to the difference in rotational speed between the take-up roller // and 7.2. It is possible to wind up 3f of incoming papers. Therefore, the receiving roller /9 should not be closely related to the position of the winding core /3, but should be raised quickly after the paper is sent to the nip 117.

When the paper cutting process shown in FIG. 10 is completed, the receiver roller 9 gradually rises due to the action of the air cylinder 37, and as shown in FIG. The winding roller //, /, approaches the interval of 2, and the winding core /3 within the interval fully supports 0 and the winding roller //, 7.2 the winding core lJ within the interval has a predetermined length. When the paper S is completely wound up, the receiving roller/wa descends so that the finished paper can be taken out from the take-up roller///, in the same way as described above.

In this way, the above-mentioned winding device winds up a predetermined length of paper S on the winding image roller //, the winding core /3 supplied by Ichiki within an interval of 7.2, and changes the feeding speed of the paper S. Wrapping paper can be manufactured continuously without any problems.

In addition, there are times when the speed change mechanism /l/ is used to rotate the rear winding roller /9 and all the front winding rollers at high speed, and when the roller /9 is raised and lowered. To detect the timing, etc., it is possible to use known detection means and transmission means, such as, for example, providing a speed reduction means and a cam in the rotation system of the perforation roller, and using this cam to raise and lower the receiving roller lt.

Although one embodiment of this invention has been described in detail above, this invention is not limited to the above embodiment, and it goes without saying that it can be implemented with appropriate modifications within the scope of the gist of this invention. Nor.

In the above embodiment, the protruding portion 72A is a through hole, but it may also be a recessed hole with a concave inner surface. A large number of them may be formed throughout. Further, the recessed portion 72A is not limited to a circular hole, but may be an elongated hole, or may be a slot extending around the circumferential side of the rear winding roller. In short, n is good because a recess into which a part of the paper S can be pushed in by jetting air can be formed on the circumferential side of the rear winding roller.

As explained above, according to the present invention, two winding rollers are arranged one behind the other at an interval through which the winding core passes, and the supply port of the winding core supplying device that supplies the winding core one-way is connected to the winding roller. When the roll is raised below the roller interval, the core is supported from below and the entire paper is wound up, and the core that has been completely wound for a predetermined length is taken out from the take-up roller interval. The receiving roller is provided so that it can move up and down, and the rear winding roller is connected to a transmission mechanism that rotates at a higher speed than the front winding roller. Due to the difference in circumferential speed between the take-up roller and the core feeder, the
The entire new winding core can be maintained within the interval between the winding rollers.

Moreover, since the rear winding roller has a large number of depressions on its circumferential surface, it is possible to reliably cut the paper wound around the winding core, and the cut edge of the paper remaining between the winding rollers can be cut securely. By holding the 71. The cut end of the paper can be reliably wrapped around the core.

Therefore, there is no need to provide a core support device with a complicated configuration, and the configuration of the winding device can be simplified, and the winding length can be adjusted without hitting the entire tip of the paper against the core. The winding of the paper can be fully started and smoothly completed without causing any problems. Further, in the present invention, there is no need to change the paper supply speed or the interval between the winding rollers, so it is possible to efficiently and continuously create paper wrappers.

Note that the present invention is not limited to roll-up of toilet paper, but can be widely used as a manufacturing device for other paper wrappers.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a partially cutaway plan view, FIG. 3 is a partially enlarged side view of the take-up roller, and FIGS. FIG. 13 is a schematic side view of each step. S...Paper, //...Front take-up roller, /Co...
Rear winding deck lumber, /2A... depression, /J... winding core, slag... transmission mechanism, 17... winding core supply device, 7g
...Supply port, 19...The receiver is a roller. Figure 5 Figure 7 Figure 6 Figure 8 Figure 9 Figure 12 Figure 10 Figure 13

Claims (1)

[Claims] Two take-up rollers are arranged one behind the other at a distance that allows all the cores to pass through, and the supply port of the core supply device that supplies the core to one core is faced above the gap between the take-up rollers, and below the gap between the take-up rollers. When the core is lifted up, it is supported by the core metal to allow the entire paper to be wound onto the core, and when the core with a predetermined length of paper wound thereon is removed from the gap between the take-up rollers, the receiving roller that descends is moved up and down. A paper winding device comprising a speed change mechanism connected to the winding roller and rotating the rear winding roller faster than the front winding roller to maintain the winding core within the distance between the winding rollers. In,
A paper winding device characterized in that a large number of depressions are formed entirely on the circumferential side of the rear winding roller.