JP2628337B2 - Web continuous winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a method of winding a predetermined amount of a continuously supplied web around a winding core and forming a winding roll formed on the winding core. A winding device that cuts a trailing web at a web winding position and continuously winds up a winding roll by winding it around a new core prepared at the winding position. The present invention relates to a winding device that can be applied to a web that is not easily cut, such as a thick web that cannot be cut by a blade cutter.

(Prior Art) In this type of winding device, the running speed of the web is not always constant every time the trailing web is cut off by the winding roll. Further, in order to cut a web that cannot be cut by a saw blade cutter, a cutting device having a blade that traverses in the width direction of the web is often used. In such a cutting device equipped with a blade that traverses the web, if the running speed of the web during cutting is constant, it is only necessary to provide the blade so that the direction of the blade edge and the direction of movement of the blade with respect to the web coincide. If a smooth cutting can be performed, but the running speed of the web at the time of cutting is not constant each time, the traversing speed of the blade must be changed according to the running speed of the web. For this purpose, a web continuous winding apparatus as described above has conventionally been provided with a power between a roll driving system of a film winding machine and a lateral driving system of a cutter as disclosed in, for example, JP-A-59-36069. A transmission device is interposed, and a clutch or the like for disconnecting the transmission of the driving force from the roll drive system of the film winder to the cutter is provided in the power transmission device. There has been a type provided with a cutting device that drives a cutter in a transverse direction at a speed proportional to a film traveling speed by transmitting a driving force to a transverse drive system.

(Problems to be Solved by the Invention) The trailing web of the winding roll is cut, the cut end on the upstream side is wound on a new winding core, and the occupied space at the web winding position where the next winding is started. In addition to the cutting device, a core supporting device and other devices are provided at the web winding position, so the cutting device should be simplified as much as possible and the space occupied by the cutting device should be minimized. is required.

However, in the winding device formed as described above, there is a problem that the structure of the cutting device becomes complicated and the device becomes expensive for the following reasons, and a problem that the space occupied by the cutting device cannot be reduced. .

That is, the cutter of the cutting device and its traversing drive system have their working position close to the new core at the web winding position,
It is necessary to be at a standby position where there is no hindrance to winding, and for that purpose it is movably supported by a swing arm or the like.
On the other hand, when the driving roll for feeding the web is disposed at the web winding position, the winding position has a complicated structure as a whole. Therefore, the driving roll is usually provided away from the web winding position.

Therefore, the power transmission device has to transmit the driving force to a cutter traversing drive system movably provided at a position considerably away from the roll drive system, and has a large and complicated structure.

Further, in the winding device of the above-described type, it is necessary to hold the cutter at an accurate angle by directing the cutting edge of the cutter of the cutting device toward the upstream side by a certain angle with respect to the web width direction.

In addition, the cutter was held so that the side of the blade was perpendicular to the web surface, and did not have a function to smoothly guide the cut end of the web toward the outer periphery of the core by the side of the blade. Therefore, guiding the upstream cutting start end of the web to the outer periphery of the new winding core has not been easy.

INDUSTRIAL APPLICABILITY The present invention can be applied to the winding of a web which is difficult to be cut by a saw blade cutter, and can be applied even if the running speed of the web is not constant every time the web is cut. An object of the present invention is to provide a taking device. Another object of the present invention is to be able to reliably wind the upstream cut end of a web around a new core without using an adhesive even if the web is relatively thick and has high rigidity. It is to provide a web continuous winding device. Another object of the present invention is to provide a continuous web take-up device capable of cutting the web more reliably by preventing the web from escaping from the cutting blade while cutting the web.

(Means for Solving the Problem) In order to achieve the above object, the present invention provides a method of winding a continuously supplied web around a core by a predetermined amount,
The web at the end of the take-up roll formed on the winding core is cut with a rotary blade that traverses immediately downstream of the new winding core prepared at the web winding position, and the upstream end of the cut web is newly formed. In a winding device that winds up a winding roll one after another in such a manner that the winding blade is wound around a core, the cutting edge of the rotary blade is from the side opposite to the core side to the core side of the web, and the upstream side of the web. So that it can be cut downstream from
The rotary blade is laid on the upstream side of the web by a predetermined angle from the vertical position with respect to the web surface and held by the movable holder, and at the time of cutting the web, the rotary blade is faster than the running speed of the web by the motor provided in the movable holder. It is characterized by being positively driven to rotate at a peripheral speed.

Further, the continuous web take-up device of the present invention may include a guide belt mechanism on a side opposite to the web of the new core prepared at the web winding position. Further, it is preferable to provide a web supporting member for supporting the core side of the web immediately downstream of the cutting position during cutting by the rotary blade.

(Operation) FIG. 1 shows a state in which the web is cut by a rotary blade provided in the winding device of the present invention, and FIG. 2 shows a state in which the web is cut by a rotary blade in a posture perpendicular to the web surface. Indicates a state in which
1 and 2, the arrow A indicates the traveling direction of the web Wa, the arrow B indicates the traversing direction of the rotary blade 7, and the arrow C indicates the moving direction of the rotary blade with respect to the web. When the rotary blade 7 is laid down and rotated in the direction of the arrow as shown in FIG. 1, the rotary blade 7 cut into the web Wa can run smoothly while pushing down the cut web downward on its side surface. .
Further, when the cutting edge is circulated by rotation, its cutting ability is increased. However, as shown in FIG.
When the posture is perpendicular to the surface, the running web Wa
The portion cut by the rotary blade 7 is interrupted from running, causing inconveniences such as insufficient cutting and breakage of the web.

In the present invention, when cutting the web Wa, the rotary blade 7 is actively driven to rotate and traverses, so that the cutting edge circulates at a peripheral speed higher than the running speed of the web Wa, and at the same time, the web Wa is wound. While cutting from the upstream side to the downstream side of the web Wa from the side opposite to the core side and from the upstream side to the web Wa, the web
With respect to Wa, the web can be cut in the direction of arrow C in FIG. 1 and the web can be cut even if the running speed of the web Wa is not constant each time. Moreover, the side surface of the laid rotary blade smoothly guides the tip of the cut upstream web to facilitate winding around the outer periphery of a new core.

(Embodiment) An embodiment of the present invention will be described with reference to FIG. FIG. 3 is a side view of the continuous web take-up device according to the present invention, showing a state where the web is cut and wound.

The continuous web take-up device includes a known turret arm 2 that rotates about a pivot 1. New winding core C
The turret arm 2 is mounted on the leading end of the turret arm 2 at the take-up roll unloading position II. In the case of this embodiment, the web winding position I also serves as a winding position, and the winding roll wound up on the winding core C 'mounted on the other end of the turret arm 2 at the winding position. R turns and moves to the take-up roll unloading position II in place of the new core C. On the turret arm 2, guide rollers 2a and 2a for guiding the trailing web Wa of the winding roll passing through the new winding core C from the touch roll 3 to the winding roll R as shown in FIG. Core C,
It is provided in parallel with C 'and with both ends supported by a pair of arms (not shown).

The touch roller 3 is supported at both ends by a support arm 4 in parallel with the core C, and is pressed against a new core C or a take-up roll formed on the core with a predetermined contact pressure. Can be When the web is cut and wound, it serves to maintain the tension of the web W on the upstream side on the new core C at a predetermined value. The support arm 4 of the touch roller 3 is attached to a machine frame 6, and the machine frame 6 can slide on a rail 5 horizontally in the longitudinal direction of the web. During winding, the touch roller 3 moves away from the winding core at the winding position together with the machine frame 6 in accordance with an increase in the winding roll radius.

The continuous web winding device of the present invention is provided with a rotary blade 7 for cutting the trailing web Wa of the wound winding roll R. The rotary blade 7 is a movable holder on the guide support beam 9.
10, traversing the entire width of the web Wa along the core C just downstream of the core passing point P of the web Wa passing through the new core C at the web winding position (winding position) I. Can be. The guide support beam 9 is supported in parallel with the winding core C by swing arms 8 arranged at two places so as to straddle the web W in a direction perpendicular to the paper surface of FIG. The inclination of the rotary blade 7 with respect to the web surface and the inclination of the web Wa with respect to the width direction can be adjusted in advance in the movable holder 10. The movable holder 10 is guided in the longitudinal direction of the guide support beam 9, and can move at a constant speed by being driven by a motor (not shown) provided on the guide support beam. The mechanism for moving the movable holder 10 is as follows.
In this case, since it is the same as that disclosed in Japanese Patent Publication No. 55-15377, detailed description is omitted. The movable holder 10 is provided with a motor 11 for driving the rotary blade 7 to rotate. The motor 11 rotates the cutting edge of the rotary blade 7 from the upstream side to the downstream side of the web Wa to cut into the web Wa, and the speed difference between the running web Wa and the cutting edge of the rotary blade 7 is at least: The rotary blade 7 can be positively driven to rotate so that the web is kept at a minimum level or more so as not to cause inconvenience in cutting the web. Rotary blade 7 attached to movable holder 10
As shown in FIG. 3, a predetermined distance from the surface of the web Wa to the side opposite to the core C of the web Wa, that is, from the touch roller 3 side to the core C side, and from the upstream side to the downstream side of the web Wa. It is in a posture of being laid down so as to cut at an angle of. Then, at the time of web cutting and winding, the rotary blade 7 is moved from the standby position III indicated by the chain line in FIG.
It can be moved by the swing of.

According to the winding device of this embodiment, the web Wa of the new core C and the web Wa of the new core C are assisted so that the cutting start portion on the upstream side of the web Wa cut by the rotary blade 7 is wound around the new core C. A known guide belt mechanism 12 having a winding width corresponding to a part of the entire width of the web is provided at a position corresponding to the cutting start portion on the opposite side. The guide belt mechanism 12 is supported by swing arms 13 provided at two positions with respect to the paper surface of FIG. 3, and has a standby position V indicated by a chain line in FIG. 3 and an outer periphery of a new core C indicated by a solid line. At the working position VI surrounding the opposite side of the web Wa. The guide belt mechanism 12 at the operating position VI circulates the endless belt 12a in the same direction as the rotation of the new core C to guide the web Wa along the outer periphery of the core C. Since the cutting edge of the rotary blade 7 at the operating position IV is directed to the web winding port of the guide belt mechanism 12, the upstream cutting start portion of the web Wa is guided to the web winding port.

Further, a receiving bar 14 extending over the entire width of the web Wa serves as a member for supporting the web Wa during cutting, at the tip of the swing arm 13.
Is provided. When the swinging arm 13 brings the guide belt mechanism 12 to the operating position VI, the receiving bar 14 moves along the cutting position of the web Wa by the rotary blade 7 immediately downstream of the cutting position and the core C of the web Wa. Side. The receiving bar 14 located along the cutting position is
Web so that the web Wa does not escape from the rotary blade 7 during cutting
Works to support Wa. Thereby, the web Wa can be more reliably cut. In this embodiment, the side surface of the receiving bar 14 facing the core C is provided so as to be very close to the web winding port of the guide belt mechanism 12, so that the side surface of the web guided by the side surface of the rotary blade 7 is formed. The upstream cutting start portion can be more reliably guided to the web winding port. In addition,
Instead of the receiving bar, a support member for locally supporting the web may be provided on the movable holder 10 of the cutting device. That is, the support member may be attached to the movable holder 10 so as to extend from the rear in the traveling direction of the rotary blade 7 to the corresponding position of the rotary blade 7 at a predetermined position on the core side of the web Wa.

Further, the receiving bar may not be provided depending on conditions. When the web naturally winds around the winding core C due to static electricity or the like, the guide belt mechanism is not required.

 Next, the operation of the winding device in this embodiment will be described.

While the web W is wound on the core C 'at the winding position I, a new core C is mounted on the turret arm 2 at the take-up roll unloading position II, and a predetermined amount of the web W is wound. When the take-up roll R is wound up on C ′, the turret arm 2
Is rotated to attach the new core C attached thereto to the winding position I. When the new winding core C comes to the winding position, the machine casing 6 which has been retracted from the winding position I in accordance with the radius of the winding roll R advances to the position shown in FIG. The core W is brought into contact with the core C via the web W. Then, the swing arm 13 swings to bring the guide belt mechanism 12 and the receiving bar 14 to the operating position VI. On the other hand, the swing arm 8 of the cutting device is also swung to set the rotary blade 7 at the operating position IV. At this time, since the rotary blade 7 is on standby near the end of the guide support beam 9, it does not hit the trailing web Wa of the winding roll R. When the guide belt 12a of the guide belt mechanism 12 is circulated and the rotary blade 7 is moved along the winding core C while being driven to rotate, the web Wa is cut, and the cutting start end on the upstream side of the web is connected to the guide belt mechanism. 12
And wound around the core C. At this time, the new winding core C is rotationally driven by a known rotary driving device (not shown). The rotary blade 7 traverses along the winding core C but the web Wa is running, so that the rotation of the rotary blade 7 with respect to the web Wa is oblique in the width direction of the web Wa. And the web Wa
Is cut at an acute angle with the cutting start portion as the vertex. When the cutting and winding of the web Wa is completed, the rotary blade 7, the guide belt mechanism 12, and the receiving bar 14 return to their respective standby positions. And touch roller 3
The web W continuously supplied to the winding position I through the winding is wound on a new winding core C to form a new winding roll. On the other hand, the take-up roll R at the carry-out position II is released from the turret arm 2 and carried out. While repeating such operations, the winding device of this embodiment winds the winding roll one after another.

Rotation speed of rotary blade is 800rpm, traverse speed of rotary blade is 2.1m / m
in, an example apparatus in which the inclination of the rotary blade toward the upstream side of the web (intersection angle between the side of the rotary blade and the web surface) was 34.6 degrees, a PET film having a thickness of 350 microns was cut, and the film was 100 to 300 m thick. It was able to cut normally and wind it around the core at various running speeds in the range of / min.

Although the present invention has been described with reference to one embodiment, it is needless to say that the embodiment can be appropriately changed and applied depending on the well-known technique of the designer, the condition of the specifications of the device, and the like.

For example, the present invention can also be applied to a winding device having a web winding position and a cutting winding position separately.
Further, the rotary blade may be provided not only inclining from the vertical posture to the web surface to the upstream side of the web but also further inclining in the width direction of the web.

(Effects of the Invention) According to the present invention, the rotary blade is positively driven to rotate, and the rotary blade is kept lying on the surface of the web, so that cutting is difficult and the supply speed to the winding position is reduced. Inconsistent webs can be reliably cut while running.
Further, when the rotary blade is traversed, it is not necessary to traverse at a traversing speed proportional to the running speed of the web, and the cutting device is simplified. Further, the cutting start portion on the upstream side of the web is pushed down toward the outer periphery of the new core by the side surface of the rotary blade and is smoothly guided, so that winding around the new core is ensured.

According to claim (2), the cutting start end on the upstream side of the web can be wound around the core without using an adhesive, so that the adhesive is mixed in the web regeneration step. There is no need to worry about problems caused by

According to claim (3), since the web is supported by the support member, the web is more reliably cut without escaping due to the cutting of the rotary blade.

[Brief description of the drawings]

FIG. 1 is a reference perspective view schematically showing a state in which a web is cut by a rotary blade of a cutting device in a winding device of the present invention,
FIG. 2 is a reference perspective view schematically showing a case where the rotary blade shown in FIG. 1 is vertically cut into the web surface, and FIG.
The figure is a schematic side view of one embodiment of the present invention. C: new winding core, R: take-up roll, Wa: tail web, 7: rotary blade, 12: guide belt mechanism, 14: web support member

Claims (3)

(57) [Claims] After winding a continuously supplied web around a core by a predetermined amount, a web at the end of a winding roll formed on the core is prepared at a web winding position. In the winding device for winding the winding rolls one after another by cutting the web with the rotating blade that traverses just downstream of the core and wrapping the leading end of the cut web on a new core. The rotary blade is set to a predetermined position from a vertical position with respect to the web surface so that the blade edge of the rotary blade can be cut from the side opposite to the core side of the web to the core side and from the upstream side to the downstream side of the web. It is characterized by that the rotary blade is positively rotated at a peripheral speed higher than the running speed of the web by a motor provided in the movable holder when the web is cut, while the web is cut by the angle and held by the movable holder. Web continuous winding machine . 2. The continuous web take-up device according to claim 1, further comprising a guide belt mechanism on a side of the new core prepared at the web winding position opposite to the web. 3. The continuous web take-up device according to claim 1, further comprising a web supporting member for supporting a core side of the web immediately downstream of the cutting position during cutting by the rotary blade.