JPS59167436A - Wind-up device for roll paper - Google Patents

Abstract

PURPOSE:To provide a device in which a difference in peripheral velocity between wind-up rollers located parallel to each other at the front and the rear causes holding action of a core fed within a spacing between the wind-up rollers and enables a paper to be easily wound around the core by means of an injected air. CONSTITUTION:Through the working of a speed change mechanism, a rear wind- up roller 12 is rotated at a higher speed than that of a front wind-up roller 14, an empty core 13, fed within a spacing between the two rollers 11 and 12, is held by the rollers 11 and 12, and a paper 5, conveyed through a perforating mechanism, is wound around the core 13. In which case, the paper 5 is blown against a portion, where the rear roller 12, is brought into contact with the core 13, by means of an injected air through a nozzle 49 mounted to the front roller 11 resulting in facilitation of winding of the paper 5 around the core 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes a difference in circumferential speed between winding rollers arranged in parallel before and after the winding rollers to prevent the core from falling when the winding core is supplied within the interval between the winding rollers. The present invention relates to a paper winding device that makes it easier to wind paper around a core by jetting air from the winding core.

In a winding device that feeds a core between take-up rollers and winds paper around the core while supporting the core from below with a roller, the receiver supports the roller when taking out the core after winding. must descend. For this reason, a support device is required to support the hindlimb winding core that is supplied to the space between the winding rollers and the core to be wound next. However, the provision of such a support device complicates the structure of the winding device and may cause malfunctions.

The present invention has been proposed in view of the above, and includes two winding rollers arranged one behind the other at an interval where the winding core passes through, and a winding core supply supplying the winding core to one core within the interval between the winding rollers. The supply port of the device faces above the gap between the take-up rollers, and a nozzle is installed in the groove formed in the front take-up roller to spray air onto the rear take-up roller. A speed change mechanism that rotates the take-up roller at a higher speed than the front take-up roller is connected to the take-up roller. It is an object of the present invention to provide a winding device for paper that is prevented from falling from the gap between the winding rollers.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following description will be made based on drawings of an embodiment of the present invention implemented as a toilet paper winding device.

As shown in FIG. 1, the winding device is provided with a base paper placement section 3 that rotatably places a rolled base paper 2 adjacent to a frame-like frame. A feed belt mechanism that feeds out the base paper in contact with the outer peripheral surface of the base paper roller, and a guide roller 6 that laterally guides the left side of the paper that is fed upward by the rotation of the feed belt mechanism are provided. On the side, a perforation carving mechanism IO is provided, which is formed by vertically opposing a fixed blade receiver 7 and a perforation roller roller having a perforation blade g attached to the outer peripheral surface, and the perforation carving mechanism IO
On the downstream side of the winding core, two horizontally elongated winding rollers //, /, 2 are arranged one behind the other with an interval approximately equal to or slightly narrower than the outer diameter of the winding core /3, and the above-mentioned feed belt mechanism,
The perforation roller 9 and the front take-up roll // are each mechanically connected to a drive source (not shown) so that they rotate at the same feed speed.

Still, both take-up rollers //, /, 2 are connected to a transmission mechanism /4 (which can rotate the rear take-up roller /, 2 at a higher speed than the front take-up roller // at a predetermined time. The transmission shown in FIG. //'
, /K', both speed change pulleys /Aa, /Ab K
It is a continuously variable transmission with a V-belt/S stretched, and the effective diameter of the speed change pulley attached to the front take-up roller // is increased, and the speed change pulley is attached to the rear take-up roller/2. /
By reducing the effective diameter of the rear winding roller 1.2, it is possible to rotate the rear winding roller 1.2 at a higher speed than the front winding roller /1. As the transmission mechanism/g, a cone type continuously variable transmission using a conical belt pulley or other known transmission mechanism can also be used.

1'S - Winding roller //, /: Above the interval of 1, there is a supply port / of the core supply device 17 that supplies the core /3 to one core within the interval.
g, and below the above-mentioned interval is a support that supports the winding core 13 supplied from the winding core supply device /7 from below, and a roller /9 is provided so as to be movable up and down.

Core supply device shown in Figure 1/? is a large number of winding cores 13...
A storage box θ for storing ・ and an outlet 2 of the storage box 20.
0' The core take-out roller 22 takes out the core/3 one by one and puts it into the groove 2/, and the core take-out roller here rotates to take out the core/3 and feed it into the supply port/g at the lower end. a guide gutter 23 that guides the guide gutter 23, and a core delivery mechanism 24/ that is located near the supply port 1g of the guide gutter 23 and feeds the winding core /3 to a distance between the winding rollers // and /2. The supply port IT of the guide gutter 3 is provided with a left flat spring 2 whose lower end is bent inward. Therefore, when the core 13 in the take-out groove 11 is fed into the guide gutter 3 by rotating the two core take-out rollers, the core 3 flows down while rolling in the guide gutter 23, and -71 The flat spring of the supply port/g is caught on the left bent portion 2s' and is on standby. The winding core /3 waiting at the supply lower g at I~ is
Winding core feeding mechanism, winding roller //, /:l by 21I
is sent within the interval.

The core feeding mechanism moss feeds the empty core 13 waiting at the supply port ig immediately before the core 73 within the interval between the winding rollers l/, /co winds up a predetermined length of paper S. Any configuration may be used as long as it is forcibly sent. The winding core feeding mechanism unit shown in FIG. A horizontally elongated bearing shaft 2g is provided at the tip of the attached arm rod yuku along the length direction of the rear winding roller 2, and an endless belt is attached to the tip of the arm core extending forward from the middle of the bearing shaft 2g. 30 is stretched in a triangular shape by small pulleys 3/..., the upper sprocket roller and the 3 lower sprockets are connected by a chain 33, and the cam floor 3'l provided on the 3 lower sprockets is connected to the cam floor 3'l of the first cam 3S. It comes into contact with the surrounding surface. Therefore, when the first cam 3 is rotated to the left, the three cam propellers rotate the three lower sprockets in the counterclockwise direction in Figure 1, which causes the upper sprocket and the second sprocket to rotate through the chain 33. Rotate counterclockwise.

When the upper sprocket JA rotates, the arm rod turns integrally with the upper sprocket, so the belt 30 at the tip of the arm moves forward and the notch in the guide gutter 3 (not shown)
The winding core 13, which is inserted above the supply lower g and is waiting at the supply port ig, is pressed from above against the bias of the flat spring 2S against L7, and the winding core /3 is moved to the winding roller //, / If you send it out to the top of the interval of 2, a crest will be created. The timing for sending out the winding core /3 is immediately before the end of winding a predetermined length of paper onto the winding core /3 located within the distance between the winding rollers l/, /. To detect the length of the left side of the paper wound around the core /3, for example, a detector (not shown) consisting of a cam and a switch is provided in the rotation system of the perforation roller t, and the detector detects the perforation. It is sufficient to detect the number of rotations of the roller and detect a predetermined number of rotations, that is, the entire length of the sheet of paper that the perforation roller has conveyed.

The core 13 falls from the supply port /g and is rolled up by the take-up roller //
, /2 is the same as or slightly narrower than the outer diameter of winding core /3, so as shown by the solid line in Fig. roller//,
It is rotated by the rotation of both rollers // and /2 while being placed on / and l.

Then, when the endless belt 30 descends to 4 and contacts the winding core /3, the endless belt 30 rotates due to the rotation of the winding core 13 and carries the winding core 13 to the narrowest point between the winding rollers // and /3. Push 7 into the space. Since the winding core /3 is made of cardboard or the like in the shape of a hollow pipe, when it is pressed from above by the endless belt 30, it deforms into a slightly oval shape, and the winding roller /
/.

It is possible to pass through the narrowest interval of /2 while rotating. After passing, the cross section returns to a nearly perfect circle due to elasticity, as shown by the dotted line in Figure 3.

The receiving roller 19 receives the core/roller supplied as described above.
3 is supported within the interval of the winding roller //, /2 and the core winding core /
, j winds up the paper S, and when the winding core /3 has finished winding the paper of a predetermined length, for example 60n1, the winding roller descends and winds the winding core /3 from the interval of //, /2. It allows you to take out the.

The roller/q shown in Fig. 1 is rotatably supported at the tip of a rotating rod 36 with its base end pivoted on the frame l, and is moved up and down by an air cylinder 37 connected midway through the rotating rod 3A. It is designed to be able to move.

Also, the rotating rod? One end of the regulating rod 7g is maintained between the rod 3' and the air cylinder 370 rod 3', and the middle of the regulating rod 3f is pivotally attached to the frame l, and the cam floor 39 provided at the other end is connected to the eccentric cam. When it comes into contact with the circumferential surface of I10,
By adjusting the stop position of the eccentric cam 110, the receiver can appropriately set the top dead center of the roller 19.

Therefore, when the eccentric cam lIo is appropriately adjusted and air is force-fed to the air cylinder 37, the roller /q rises to a predetermined height and the winding core /3 is moved to the distance between the winding rollers // and /ko. can be supported at the optimum height. The optimum height of the winding core /3 is the center /l' of the winding rollers //, /2, as shown by the dotted line in Figure 3.

/, IO of winding core /3 slightly below the straight line t connecting 2''
- The height at which the center/3' is located. Winding core 13 at this height
When the winding core /3 is supported, the winding core /3 is supported by simultaneously contacting three places: the curved surfaces of both winding rollers l/ and /2, and the circumferential surface of the roller /q. Therefore, in this state, both take-up rollers l/,
When /λ is rotated clockwise in Figure 1, the winding core /3 rotates efficiently without slipping counterclockwise due to friction, and the paper left fed from the perforation mechanism lθ can be efficiently wound. can. Note that since the winding core 13 is supported at three places as described above, the winding rollers /l, /:L
Even if the paper S is rotated at high speed, the paper S can be reliably wound up without causing any splashing or slippage. Therefore, winding can be performed faster and more efficiently than conventional winding devices.

When the core /3 winds up the paper 3, the outer diameter gradually becomes thicker as shown in Fig. 5, and this receptacle becomes a roller /? gradually decreases. Note that even if the roller/9 gradually descends, the receiver will not hold the core 1.
The circumferential surface of the paper wound on 3 is attached to both take-up rollers //, /, 2
Since the circumferential surface and the receiver are constantly pressed against the circumferential surface of the roller /9, even when the -/l- paper 3 is wound up at high speed, it does not wrinkle and can be wound up more tightly than before. By adjusting the pressure of the cylinder 3, it is possible to adjust the winding pressure of the paper to be wound onto the core /3.

When the winding core /3 winds up the paper S with a length slightly shorter than the predetermined length, for example, 5977Z length out of 60 m, as mentioned above, the detection installed in the rotation system of the perforation roller t. The device sends a signal, and the signal causes the winding core feeding mechanism 2
As shown in FIG. 6, the endless belt 30 starts to press the winding core /3 waiting at the supply port /g. When the winding core 73 on the roller /9 winds up a predetermined length of paper, the endless belt 3θ moves the empty winding core /3 onto the winding rolls //, /L, as shown in FIG. Feed within the interval. When the winding core 13 of the roller/9-toe winds up a predetermined length of paper, a take-out arm 3 having a take-out portion t2 at the tip is inserted into the groove of the rear winding roller/yu. , the arm QJ
Rotates due to the action of the interlocking rod guda connected to the base end of the interlocking rod p and the second cam 6 that comes into contact with the cam floor 1I5 at the lower end of the interlocking rod p, and as the take-out portion 4'j comes into contact with the paper roll, the receiver is rotated by the roller/9. or begins to descend.

When the take-out part 11.2 comes into contact with the wrapping paper as shown in FIG. 7, the wrapping paper rotates and the receiver rolls from above the roller/9 onto the nip Qt as shown in FIG. It is sandwiched and stopped between q7 and the take-out part llco. Since the winding rollers l/, /2 continue to rotate even when the paper roll is stopped, the paper roll fed from the perforation forming mechanism 10 begins to loosen as shown in FIG. A nozzle ttq-'7 is provided in the groove g of the front winding roller // to inject air from diagonally downward toward the interval between the winding rollers // and /2. Therefore, when air is injected from this nozzle 4t9, the loose paper 5 is
As shown in Figures 1 to 10, the winding material is blown toward the rear winding roller saw, and is folded between the winding roller and a new winding core. In this state, the rear winding roller 2 pulls the end of the winding paper that is stopped on the nipping duct, so a strong tensile force is generated at the end of the winding, and this tensile force causes a 3- The paper between the rear winding roller/2 and the wrapping paper is separated from the perforation. Therefore, the take-up roller //, /, 2
The paper cutting process and the winding core feeding process can be performed without changing the feeding speed of the paper fed in between.

The winding core 13, on which a predetermined length of paper has been wound in the manner described above, rolls due to the tilting of the nip 117, as shown in FIG. 11, and is placed on the left θ of the seaming machine and wound.

On the other hand, the winding core sending mechanism 29 causes the winding rollers //, /2 to
As shown in FIG. 8, the empty winding core /3 fed within the interval of
, l:l, and passes from top to bottom while being pressed by the endless belt 30.

At this point, the rear take-up roller /:l is rotating faster than the front take-up roller /l due to the action of the speed change mechanism /4. The winding cores /3 located at narrow intervals receive an upward force due to friction with the rear winding roller 12, and the endless belt 3
0 can suppress the rise in upper = 7V-. Therefore, the winding core /3 is held below without falling from within the interval between the winding rollers //, /:l even without the rollers /9, and rotates counterclockwise in the drawing. In this state, when the loosened paper is blown by the air ejected from the nozzle lI9 onto the contact portion between the winding core /3 and the rear winding rollers /2, the winding core /3 begins to wind up the paper.

When the paper is cut by the tensile force, the winding core 13
Wind up the cut end of the paper.

In this way, the winding core /3 is supplied between the winding rollers //, /2.
As shown in FIG. 11, the receiver is held from below by the difference in rotational speed between the take-up roller // and 72 even without the support of roller /q, and is fed from the perforation forming mechanism 10. The rolling paper 3 can be wound up. Therefore, the receiver is Laura/
The position of the winding core 13 does not have much to do with the position of the winding core 13, and it is sufficient that the winding paper is raised quickly after being sent to the nipping duct.

When the paper cutting process shown in FIG. 10 is completed, the receiver roller 9 gradually rises to the left by the action of the air cylinder 3, and as shown in FIG.
By the time the winding process is performed, the distance between the winding rollers // and /2 approaches, and the winding core /3 existing within the distance is supported. Then, the winding roller //, the winding core 73 within the /2 interval is a paper 3 of a predetermined length.
When you wind it up, the receiver becomes a roller/? Similarly to the above, the winding rollers descend so that the rolled paper can be taken out from the intervals of the winding rollers //, /, l.

In this way, the winding device has a winding roller.

1: By winding up a predetermined length of paper on the core/3 that is supplied one by one within one interval, it is possible to continuously manufacture paper wrappers without changing the feeding speed of the paper S.

In addition, when to operate the speed change mechanism /+ to rotate the rear take-up roller /c at a higher speed than the front take-up roller /,
To detect when to raise or lower the roller/9, for example, the feed length of the paper can be electrically detected by a detector installed in the rotation system of the perforation roller 9, or The rotation system of t is provided with a deceleration means and a cam, and the cam raises and lowers the roller 9. This can be done by known detection means and transmission means.

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 supply device that supplies the winding core to one of the winding rollers is connected to the winding roller at the interval between the winding rollers. A nozzle is placed in the groove of the front winding roller, and a speed change mechanism is connected to the winding roller to rotate the rear winding roller at a higher speed than the front winding roller. Due to the difference in circumferential speed between the front winding roller and the rear winding roller, the new core supplied from the core supply device can be held within the interval between the winding rollers, and the paper can be placed on the core. Easy to start winding. 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. Still, the present invention does not require changing the paper supply chain or changing the interval between take-up rollers, so it is possible to efficiently and continuously create paper rolls. 77- It can be widely used as a manufacturing device for rasp and other wrapping paper.

[Brief explanation of drawings]

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. 12 is a schematic side view of each step. 5...Paper, //...Front take-up roller, /2...
Rear winding roller, /3... Winding core, /lI... Speed change mechanism, 17... Winding core supply device, 7g... Supply port, 4
/q... Nozzle. Patent applicant Fumi Oishi 251 Figure 1O

Claims (1)

[Claims] Two take-up rollers are arranged in front and behind each other at intervals where the winding cores pass through, and the supply port of the core supply device that supplies the winding cores to one roll faces above the interval between the winding rollers. A nozzle is installed in the roller-shaped groove to spray air onto the rear take-up roller. A paper winding device characterized in that a speed change mechanism is connected to a winding roller to rotate the roller faster than the winding roller in front of the winding roller and maintain the roller within a core interval between the winding rollers.