JP2623173B2 - Automatic winding method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic winding method and apparatus, and more particularly, to an automatic winding method and apparatus used for a web winding apparatus using a core.

[0002]

2. Description of the Related Art In a cutting and winding apparatus for winding a long web (sheet-like body) such as paper, metal foil, and fabric into a core while cutting the web, a folding ( When using the web of the rolled product, a device that handles the web may be damaged, or the tack portion may not withstand use and a part of the web may be wasted. An automatic winding method and apparatus for performing winding without using the same are used.

A conventional automatic winding apparatus of this type is described in, for example, Japanese Patent Application Laid-Open No. 62-83963. The winding device described in the publication will be described with reference to FIG. In the drawing, reference numerals 1 and 2 denote surface drums, and reference numeral 4 denotes a rider roller. The core 3 is held by these rollers and driven to rotate to wind up the web 9.

[0004] Prior to the start of winding, the web 9 is cut on a table 51 via a cutting device 53, and is folded back on a core by an air blow device 52. Thereafter, the roller device 60 having the two small-diameter rollers 59 at the standby position on the outer side in the radial direction moves forward and presses the web against the core 3. The shape of the roller device 60 is shown in FIG. 13 together with an example of a winding core.

The web 9 has a surplus length at its leading end, and the ordinary winding device will proceed to the winding process as it is, but if the process proceeds to the winding process as it is, the surplus portion will be removed. A tack is formed. For this reason, in the automatic winding device of the cutting and winding device, the surplus is pulled back through the position movement in the direction of the arrow perpendicular to the rotation axis of the adjustment roller 54 and the reverse rotation of the surface drums 1 and 2, and the web tip is The winding position, that is, the position where the leading end of the web overlaps with another web portion and is pressed immediately before the core is pressed.

The length of the retraction is determined by each of the sensor means S1 and S1 arranged in accordance with the diameter of the core 3 to be selected.
2, measured in S3. Further, during this retraction, the leading end of the web 9 can enter the winding position without forming a tack in the transition to the subsequent winding process.
The core 3 is passed through a roller device 60 having a small-diameter roller 59.
, So that the web is wound.

In the winding process, when the rollers rotate forward again and the leading end of the web advances from the winding position and passes through the winding position, the roller device 60 having the small-diameter roller 59, which is no longer required, is wound. From the attachment position to the original radially outer standby position, and replaces it with the rider roller 4.
Descends, rider roller 4 and surface drums 1, 2
Winding of the web 9 is performed while holding the core 3 between.

The winding by the small-diameter rollers is performed as close as possible to the winding position of the web, and the two small-diameter rollers 59 are used in order to ensure that the web enters the winding position.
Of these, it is necessary to position the small-diameter roller on the front end side of the web immediately adjacent the winding position. For this purpose, in addition to making the diameter of the small-diameter roller as small as possible, the link mechanisms 61 and 62 for moving the small-diameter roller include a standby position while adjusting the inclination of the small-diameter roller in accordance with the diameter of the core. The device has been devised to move forward.

[0009]

In the case of the above-mentioned conventional automatic winding device, the roller device having the small-diameter roller 59 is lowered to the winding position on the web every time a new core is supplied. The winding is performed while pulling back the surplus of the surface drums 1, 2.
Need to be reversed, and time is required for this reversal.

In the cutting and winding device, efforts are made to increase productivity by increasing the rotation speed of the transfer roller as much as possible. However, the time required for pulling back the web for preventing tack is from the completion of cutting the web to the actual web winding. There is a problem that the time required for cutting is lengthened and the productivity of cutting and winding is sacrificed, and this reduction in productivity has been a serious problem particularly in the case of a small number of products having a small number of turns.

Furthermore, a small-diameter roller for winding a web has a small diameter and therefore has a small rigidity, so that it tends to bend, and the pressing force on the web tends to be uneven. For this reason, the winding of the web is not performed on average, and the leading end of the web is not uniformly entered into the winding position, so that the leading end is wrinkled, slack, or partially jumps out in the lateral direction, and the winding is performed. There was also a problem that the quality of the product was reduced.

In view of the problems of the conventional automatic winding method and apparatus, the present invention enables winding without forming a tack and without reversing the rollers, that is, at the expense of productivity. It is an object of the present invention to provide a method and an apparatus for automatically winding a winding device, in which a web without a tack can be wound without performing the operation.

Further, the present invention provides an automatic winding device for a winding device capable of producing a high-quality wound product without wrinkling or slackening at the leading end of the web, or without causing part of the web to fly out. It is also an object to provide a mounting method and apparatus.

[0014]

In order to achieve the above object, the present invention relates to an automatic winding method for a web take-up device using a core, wherein the web is wound around a core. When wound without being rotated, the end of the web is cut to a length that reaches the winding end of the core, and the cut end of the web is wound around the core about half a turn. At the start end, the winding roller is pressed onto the winding core from above the web, and the winding roller is concentric with the winding core along the winding core peripheral surface from the pressed winding start end position to the winding end. And is moved along a circular locus.

The automatic winding apparatus of the present invention used in the automatic winding method is an apparatus for winding the leading end of a web wound around a core so that the leading end reaches the winding end. A winding roller for pressing the web against the core, and moving the winding roller from a standby position away from the core to a position for pressing the web onto the core at a winding start end. The winding roller driving means includes moving means and turning means for turning the winding roller from the winding start end to the winding end along the peripheral surface of the winding core.

[0016]

In the automatic winding method according to the present invention, the web is cut to a length such that the leading end of the web reaches the winding end.
After winding the leading end around the winding core, the winding roller is used to turn the winding from the winding start end to the winding end along the peripheral surface of the winding core to perform winding, so that the web does not need to be pulled back. As it became possible to wind without tack,
Productivity in web winding can be improved, and the strength of the winding roller can be easily maintained and the pressing force on the web can be made uniform, so that the leading edge of the web into the winding position can be made uniform. In addition, it is possible to supply a high-quality rolled product without wrinkling or slackening at the web tip portion or part of the web running out.

The automatic winding device of the present invention can be used in the above automatic winding method. Also, after winding the leading end of the web cut to a length reaching the winding end to the winding core, the winding roller that reciprocates and swings from the winding start end to the winding end by a winding roller that reciprocates and turns. Since the winding is performed by turning along the surface, it is possible to perform winding without tacking without having to pull back the web, and it is possible to improve productivity in winding the web, and to increase the winding roller. The strength of the web can be easily maintained and the pressing force on the web can be made uniform, so that the leading edge of the web can enter the winding position evenly, wrinkles and slacks occur at the web tip, or some of the And a high quality rolled product can be supplied.

Further, if a web guide having an arc corresponding to the winding radius of the web is attached to the winding roller, the winding angle of the web entering the winding position can be kept small. Jumping out during winding is particularly prevented.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further explained with reference to the drawings.

FIG. 1 is a schematic side view showing a structure of a main part of an automatic winding device according to an embodiment of the present invention. In FIG. 1, reference numerals 1 and 2 denote surface drums, and a winding core 3 is supported on both surface drums 1 and 2 and held by a rider roller 4.

The winding table 6 is also used as a transfer table for transferring the previously wound product, on which a web is cut by a cutter 8 having a rotary blade forming a cutting device. The cutter 8 is a score-cut traveling round blade that moves up and down via a driving device.

A guide rail (not shown) for supporting the slide roller 7 and guiding the slide roller 7 in a horizontal direction is provided below the winding table 6. Winding table 6
Can move up and down with the slide roller 7, and the slide roller 7 can move forward in the winding core direction horizontally at the ascending position.

The winding roller 5 is shown in FIG. 1 as being located at a winding start end among winding positions which are radial positions at which the web 9 placed on the winding core 3 can be pressed. A predetermined angle of rotation is possible along the circumference of the winding core from the application start end to the winding end. Further, the winding roller 5 is movable from this position to a standby position separated from the winding core illustrated by a broken line. On the side of the surface drum 1, a nip roller 10 for keeping the web 9 being prepared for winding stationary with the surface drum 1 is arranged.

FIG. 2 is a side view showing the structure of the winding roller and moving means and turning means of the winding roller. In addition, it is shown as viewed from the axial end opposite to that of FIG. The winding roller 5 is rotatably supported by a slider 11 forming a movable gantry.
It is movably arranged on the top.

On the stationary frame 12, two moving cylinder devices 13 and a linear slide guide 14 serving as moving means are arranged. The slider 11 is driven by a rod of the moving cylinder device 13 and To move the winding roller 5 between its standby position and a pressing position for pressing the core. The slider 11 can also be adjusted via a rack 30 and a pinion 31 so that a radial position can be selected which is adaptable to the diameter of the core and the thickness of the web.

On the slider 11, a turning means comprising a turning cylinder device 15 and an arcuate slide guide 16 is provided. The arcuate slide guide 16 is provided with a radial guide 16a, an axial guide 16b, When the slider 11 is at the position shown in the drawing, in which the winding roller is moved to the web pressing position, the center of these arcs is the winding core 3. Match the center of

The winding roller supporting portion 17 has two guide rollers 18 and 19 arranged radially inside and outside the radial guide portion 16a of the arcuate slide guide 16, respectively. The rear end is driven by a rod 15 and two guide rollers 19 radially and radially outward by a radial guide 16a of an arcuate slide guide 16 via four guide rollers 18 and 19.
Are guided in the axial direction by the axial guide portion 16b.

FIG. 3 is a side view of the winding roller and its supporting portion. The winding roller 5 is formed as a number of divided winding rollers divided in the axial direction, and each of the divided winding rollers has a web guide 20 having a substantially triangular tip when viewed from the side at each end. Comes with. The web guide guide 20 fixedly supports a shaft 21 that rotatably supports the winding roller 5, and the winding roller 5 protrudes toward the web from the tip of the web guide guide.
The side 20a on the winding core side, which is the leading end of the web guide, has an arc shape, and the diameter of the arc is substantially the same as the outer shape of the winding core 3.

The rear end 20b of the web guide 20 is fixedly supported by a pin 22, and the pin 22 is supported in the through groove 23 of the winding roller support 17 so as to be slightly slidable in the axial direction. . A spring 24 that presses and biases the divided winding roller 5 against the core 3 is disposed on the outer periphery of the pin 22, and one end of the spring 24 is supported by a shoulder of the through groove 23.

FIGS. 4 to 11 are schematic side views of a main part of a winding device for each step for explaining an automatic winding method according to an embodiment of the present invention. Note that the web guide is omitted.

FIG. 4 shows a state before winding is started. Winding table 6 and slide roller 7
Is in the lowered position, and the web 9 is cut from the wound product of the previous core by a cutter (not shown) on the winding table 6, and the two surface drums 1, 2 The next winding core 3 is placed at the position. The cutter is arranged so as to be able to descend on the winding table so that the web arranged on the winding table can be cut, and its lowered position is set when the tip of the cut web is wound around the core. This is a position where the tip can be cut to a length that reaches the winding end just before the winding position. This position may be a constant position as long as the diameter of the core is constant, and no special dimensional adjustment or cutting control means is required. If the cores have different diameters, the cutter is set at a position corresponding to the diameter in advance and cut. Therefore, it is not necessary to pull back the web.

The winding table 6 and the slide roller 7 are raised, and the leading end of the web 9 is raised by the end of the winding table 6 (FIG. 5).

When the lifting of the winding table 6 is completed, the slide roller 7 moves forward in the horizontal direction, and by this movement, the web 9 is pushed by the slide roller 7 and moves toward the core, and the leading end of the web 9 is wound. And the rear portion thereof is pressed against the side of the core 3. (FIG. 6).

Next, the rider roller 4 moves downward while rotating to the core 3 side, and presses the web 9 against the core. For this reason, the web 9 is wound around the winding core 3, and the leading end of the web is located at the end of winding. At this time, the nip roller 10, which has held the web 9 between the surface drum 1 and the web to prevent the web from moving, has finished the role of holding the web and moves horizontally to move away from the surface drum 1 (FIG. 7). ).

The winding roller 5 at the standby position facing the winding table 6 with the winding core 3 interposed therebetween forms an angle of approximately 45 degrees with the horizontal direction from the standby position through the movement of the slider 11. The web 9 is advanced toward the core 3 and the web 9 is
Move to the winding start end to press. Further, the winding table 6 and the slide roller 7 retreat and descend to return to the original position (FIG. 8).

Further, the winding roller 5 is rotated by approximately 45 degrees along the peripheral surface of the winding core 3 from the winding start end to the web end, which is the winding end, via a turning means, and the web 9 is brought into close contact with the winding core 3. Winding is performed (FIG. 9). The rotation resistance of the winding roller 5 is formed to be as small as possible so that the winding roller 5 can freely rotate during this turning. At this time, the winding roller 5 is disposed at a position shifted in the width direction from other members arranged around the winding core 3 so as not to interfere with the other members.

When the winding is completed, the surface drums 1 and 2 and the rider roller 4 start to rotate, and the core 3 also rotates accordingly. Transition. When the leading end of the web 9 advances by, for example, about 10 cm and passes through the winding position, the winding roller 5 slightly retreats, separates from the web, and rotates in the original angular direction. (FIG. 10).

As the winding operation continues, the winding roller 5 returns to the original standby position via the moving means of the slider 11 (FIG. 11).

The automatic winding method of the above embodiment has the following features as compared with the conventional winding method.

There is no need to pull back the web for the purpose of web winding, and the web transfer time is not wasted, so that the web can be wound without tack without lowering the productivity of winding.

The winding roller does not necessarily need to be a small diameter roller. Since the pressing force on the web can be made uniform in the width direction, the leading end can easily enter the winding position, and the quality of the wound product is high because there is no possibility that wrinkles, slack, or jumping out of the web occurs. In particular, due to the configuration in which the winding roller is divided, the maintenance of this quality is further enhanced, and good winding can be performed irrespective of the variation in the diameter of the winding core or the difference in the thickness of the web. Also, it is possible to cope with both large and small web widths.

Each divided winding roller is provided with a web guide having a substantially triangular tip portion and an arc shape on one side of the web, so that the web can be guided very close to the winding position. As a result, it is possible to perform good winding while maintaining a small angle of approach of the leading end of the web to the winding position. Note that a constant clearance is usually maintained between the web and the guide.

The operation of the winding roller does not need to be changed depending on the diameter of the core and the thickness of the web. For example, unlike the conventional case where the angle of the small-diameter roller needs to be changed depending on the diameter of the core, the diameter of the core is different. Since the operation of the winding device can be unified even if they differ, the switching device can be dispensed with and no time is required for switching. Also, it is possible to cope with various cutting widths.

The description of the above embodiment of the automatic winding method and apparatus of the present invention has been given for the purpose of illustration only, and various modifications and changes can be made as follows, for example.

Instead of a configuration in which the winding roller is a divided winding roller and each of the divided winding rollers is provided with a slide and a spring mechanism, an integral winding roller formed of an elastic material such as rubber or a cushion can be employed. Thus, the pressing force in the width direction of the web can be made uniform. Similarly, the slide roller can be a cushion roller. Further, the web can be fed onto the winding core by air blow instead of the slide roller. A cylinder device can be employed instead of the spring mechanism of the winding roller, and the moving means and the turning means of the winding roller can be configured as, for example, an arm supporting the winding roller.

The automatic winding method of the present invention can be applied not only to a winding device of a type having a surface drum and a rider roller but also to a winding device of a center wind type.

Further, the present invention can be applied to a winding device such as a coater, a laminator and a printing machine instead of the application to a cutting and winding device.

[Brief description of the drawings]

FIG. 1 is a side view showing a main structure of an automatic winding device according to an embodiment of the present invention.

FIG. 2 is a side view showing a structure of a winding roller of the automatic winding device of FIG. 1 and a moving and turning means of the winding roller.

FIG. 3 is a side view of a winding roller and a supporting portion thereof.

FIG. 4 is a side view for explaining an automatic winding method according to an embodiment of the present invention.

FIG. 5 is a side view for explaining an automatic winding method according to one embodiment of the present invention.

FIG. 6 is a side view for explaining an automatic winding method according to an embodiment of the present invention.

FIG. 7 is a side view for explaining an automatic winding method according to one embodiment of the present invention.

FIG. 8 is a side view for explaining an automatic winding method according to an embodiment of the present invention.

FIG. 9 is a side view for explaining an automatic winding method according to one embodiment of the present invention.

FIG. 10 is a side view for explaining an automatic winding method according to one embodiment of the present invention.

FIG. 11 is a side view for explaining an automatic winding method according to an embodiment of the present invention.

FIG. 12 is a side view of a winding device including a conventional automatic winding device.

FIG. 13 is a side view of a roller device having a small-diameter roller of a conventional automatic winding device.

[Explanation of symbols]

 1, surface drum 3 core 4 rider roller 5 winding roller 6 winding table 7 slide roller 9 web 13 moving cylinder device 14 linear guide 15 rotating cylinder 16 arc-shaped slide guide 20 web guide 24 spring

Claims (4)

(57) [Claims] 1. An automatic winding method for a web take-up device using a core, wherein when the web is wound around a core without rotating the core in a reverse direction, a tip of the web is formed by the web. The core is cut to a length reaching the winding end of the core, and the cut end of the web is wound around the core about half a turn. A winding roller is wound from above the web at the winding start end onto the core. The winding roller is moved by rotating along the circumference of the winding core along an arc-shaped locus concentric with the winding core from the pressed winding start end position to the winding end position. And automatic winding method. 2. An apparatus for winding a front end portion of a web wound around a core so that a front end reaches a winding end, the winding roller pressing the web against the core, Moving means for moving the winding roller from a standby position away from the winding core to a position where the web is pressed onto the winding core at a winding start end, and moving the winding roller from the winding start end to the winding end A winding roller driving means comprising: a rotating means for rotating along a peripheral surface of the winding core. 3. The automatic winding apparatus according to claim 2, wherein said winding roller comprises a plurality of divided winding rollers divided in the width direction of the web. 4. The automatic winding device according to claim 2, wherein the winding roller is provided with a web guide having an arc corresponding to a winding radius of the web.