JPH10175759A - Web cutting device of web take-up device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a web cutting device for which cutting height does not need adjusting even if a take-up start position for winding a web on a reel spool is changed and also which is simple in construction. SOLUTION: Both a first take-up start position to which a primary carriage feeds a new reek spool 6 onto a rail 5 and a second take-up start position located slightly about a rail 5 can be taken, and a short air injection pipe 21 which cuts a web Wa between the reel spool 6 and a roller R when the new reel spool 6 is at the first take-up start position and a long air injection pipe 22 which cuts a web between the reel spool 6 and the roll R when the new reel spool 6 is at the second take-up start position are provided. Also each of these first and second web cutters is raised or lowered to any degree by a rotary cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a web cutting device in a web winding device. A web such as paper is continuously formed through a wire part and a press part of a paper machine, and is wound up in a roll shape at a reel part on an output side. Further, the paper roll manufactured in this manner is set on a rewinding machine to be formed into a small-diameter roll or a small-width slit. The present invention relates to a web cutting device that cuts a web after winding the web on a roll.

[0002]

2. Description of the Related Art Conventionally, a web winding device includes a reel drum for guiding a web, a reel spool, and a center drive device for rotating the web. The web is wound around a reel spool and wound into a roll. When the web is wound on the reel spool to a predetermined final winding diameter, the new reel spool moves from the standby position to the winding position, the web is cut, and the leading end of the web is wound on the new reel spool. Then, the paper roll wound on the old reel spool moves to the payout position simultaneously with the cutting of the web.

[0003] As described above, the web is cut when a predetermined final winding diameter is reached. Conventionally, a new reel spool is pressed against the reel drum above the reel drum, and the web is wound on the web in progress. A slit is inserted with a knife at the drum entrance side, and when this slit portion passes through the nip of the reel spool, the booth neck type nozzle blows air to the slit portion to cut it, but the web wound around the drum is cut. Since air is blown into the slit, air does not enter the slit well,
In many cases, it could not be cut, and smooth winding was not possible.

[0004] Therefore, an apparatus for mechanically cutting the web has been developed. An air jet pipe acting on the web passing through the nip portion is attached to an elevating table. Was sprayed on the web.

[0005]

In a recent web take-up device, a new reel spool is supplied to a first take-up start position on a rail, and then the cut web is wound on the new reel spool. It is possible to arbitrarily select the case where the new reel spool is wound around the web cut at the second winding start position above the rail and where the new reel spool is still supported by the primary carriage. Like that. In such a web winding device, the height of the web to be cut is different between the first winding start position and the second winding start position, so that the cutting height of the web cutter is raised and lowered on the elevating table. Was matched. However, it is very troublesome and inefficient to raise and lower the lifting table every time the winding start position is changed to adjust the cutting height. In addition, there is a problem that the structure is complicated due to the necessity of the elevating table, and the equipment cost is increased.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a web cutting apparatus having a simple structure without having to adjust a cutting height even when a winding start position for winding a web around a reel spool changes. Aim.

[0007]

According to a first aspect of the present invention, there is provided a web winding device in a web winding device, comprising: a reel drum for guiding a web; left and right rails on which a reel spool for winding the web is placed; A primary carriage that supplies the reel spool from the standby position to the take-up position on the rail, and supports and rotates the reel spool until a predetermined take-up diameter is reached at the take-up position; A secondary carriage for supporting and rotating the paper roll obtained by the completion of the winding, and conveying the paper roll obtained by the completion of the winding to a payout position. And a second winding start position slightly above the rail. And a first web cutter for cutting the web running between the new reel spool and the take-up roll at the first winding start position. And a second web cutter for cutting the web between the new reel spool and the winding roll when the new reel spool is at the second winding start position, wherein the first and second web cutting are performed. A moving means for arbitrarily moving each of the containers between the use position and the storage position is provided.

According to a second aspect of the present invention, in the web winding device, the first web cutter travels between the new reel spool and the take-up roll when the first web cutter is at the first winding start position. A short air injection pipe at a height for injecting air onto the web, wherein the second web cutter travels between a new reel spool and a winding roll when the second web start position is at the second winding start position It is a long air injection pipe at a height for injecting air to the web.

According to a third aspect of the present invention, the moving means is a rotary cylinder, and moves each of the air injection pipes between an upright use position and a folded storage position. It is characterized by.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings. First, the basic structure of a web winding device to which the present invention is applied will be described. FIG. 4 is a schematic side view of a web winding device to which the present invention is applied, and FIG.
It is a schematic plan view of the web winding device except a part.

In FIGS. 4 and 5, reference numeral 1 denotes left and right frames.
The reel drum 3 is installed via a bearing 2 on the upper surface (on the side from which the paper is sent). The reel drum 3 guides the running of the web W by winding the web W around about one-fourth of the outer periphery thereof. Reference numeral 4 denotes a motor for rotating the reel drum 3.

Left and right rails 5 are mounted on the upper surface of the left and right frames 1 on the left side of the reel drum 3 in the drawing. The rail 5 is a table on which a reel spool 6 for winding the web W is placed. The reel spool 6 is supported by the secondary carriage 7 at the winding position A on the right side of the rail 5 in the figure, and winds the web. Take it. In addition, as the web W is wound up, the diameter of the paper roll increases, and the center position of the reel spool 6 also gradually moves away from the reel drum 3, so that the winding position A has a certain length. The secondary carriage 7 is composed of operation side and drive side carriages 7a, 7b running along the left and right frames 1. Each carriage 7a, 7b is provided with a means for clamping and running the reel spool 6, and a drive side carriage. A center drive device 8 including a motor and a coupling for rotatingly driving the reel spool 6 is mounted on 7b. When the winding is completed, the take-up roll R (referred to as a paper roll having reached a predetermined final winding diameter) is transported to the payout position B by the secondary carriage 7.

Reference numeral 9 denotes a shock absorber which receives the winding roll R discharged from the secondary carriage 7 and absorbs a shock at the time of stopping.

On the other hand, a stocker 11 for storing several new reel spools 6 is provided above the reel drum 3, and the reel spools 6 are transferred one by one from the stocker 11 by a transfer arm 12. Is supplied to the primary carriage 13. The primary carriage 13 includes a clamp for supporting the supplied reel spool 6, moving means for moving the reel spool 6 from a standby position immediately above the reel drum 3 to a winding position at the right end on the rail 5, and A center drive device 14 including a motor and a coupling for applying a rotational driving force to the reel spool is provided.

Next, the winding process of the web winding device will be described. FIG. 6 is an explanatory diagram of the winding steps I to V. The state indicated by the symbol I is a state immediately before the paper roll r supported by the secondary carriage 7 is wound up, and the new reel spool 6 supported by the primary carriage 13 is waiting above the reel drum 3. The state II is a state in which the paper roll on the secondary carriage 7 has been wound up to the final diameter and has become the winding roll R. At this time, the secondary carriage 7 slightly moves to the payout side, and at the same time, the primary carriage 13 Moves the new reel spool 6 to the winding position.

A state III is a state in which the new reel spool 6 has been moved to the first winding start position placed on the rail 5 while being rotated by the center drive device 8 of the primary carriage 13, and in this state. , Web W
Is a winding roll R running on the secondary carriage 7 after traveling through the upper surface of the reel drum 3 and the lower surface of the new reel spool 6.
It is continuous. Therefore, here, the web cutter 1
5. The web W is cut by, for example, injecting air with an air injection pipe or the like. The end of the cut web W is wound around the take-up roll R, and the start end of the cut web W is wound around the new reel spool 6 to take up the web W newly.

The second winding start position of the new reel spool 6 is almost the same as the position indicated by the reference numeral II. The new reel spool 6 is still supported by the primary carriage 13 and the center drive of the primary carriage 13 is performed. The reel spool 6 is rotationally driven by the device 8 in synchronization with the running speed of the web W. Winding of the web W around the new reel spool after cutting is performed in the same manner as described above.

The state IV is a state in which the secondary carriage 7 is transporting the take-up roll R in the direction of the payout position. During this time, the new reel spool 6 takes up the web W while being supported by the primary carriage 13. It is getting. The state indicated by the reference numeral V is a state in which the secondary carriage 7 has returned to the winding position after the winding-up roll R has been paid out. The reel spool 6 is rotated by the center drive device 8 to take up the web. Then, the primary carriage 13 returns to the standby position again. By repeating the above operation, the web W continuously and rapidly formed by the paper machine is continuously wound up as roll paper.

Next, a web cutting device used in the web winding device will be described. FIG. 1 is a side view of a web cutting apparatus according to an embodiment of the present invention, and FIG.
FIG. 3 is an enlarged side view of the web cutting device, taken along line II of FIG.

In FIG. 1, reference numeral 6a denotes a new reel spool at a first winding start position (an on-rail frame change position on the rail 5), and 6b denotes a second winding start position (optical mode above the rail). 3 shows a new reel spool at a frame change position). R is a take-up roll, which has been slightly moved by the secondary carriage 7 in the payout direction. The web W before the cutting is performed on the reel drum 3
Is connected to the lower surface of the take-up roll R via the lower surface of the reel spools 6a and 6b.
The web Wa traveling via the reel spool 6a at the take-up start position is different in height from the web Wb traveling via the reel spool 6b at the second take-up start position.

In FIGS. 1 and 2, reference numeral 15 denotes a web cutter, which has a short air injection pipe 21 having a short length and a long air injection pipe 22 having a long length. The short air injection pipe 21 has an upper ejection port located immediately below the reel spool 6a at the first winding start position, and the long air ejection pipe 22 has an upper ejection port at the second winding start position. The respective heights are determined so that they are located immediately below the reel spool 6b, and they are mounted on the mounting housing 23.

As shown in FIGS. 2 and 3, the base of each of the air injection pipes 21 and 22 is attached to a main shaft of a rotary cylinder 24, and by driving the rotary cylinder 24, the air injection pipes 21 and 22 are connected. The posture can be changed between an upright use position and a lying storage position.

The reel spool 6a is located at the first winding start position.
Is supplied, only the short air injection pipe 21 is erected, and when air is injected into the web Wa from the tip thereof, the web Wa is partially broken by the air, and the partial break acts on the web Wa. The web is widened by the tension and the web Wa is instantaneously broken.

When the reel spool 6b is supplied to the second winding start position, the long air injection pipe 22
When the air is jetted onto the web Wb from its tip, the web Wb breaks in the same manner as described above.

As described above, in the present embodiment, two types of frame change, that is, the first winding start position (for changing the on-rail frame) and the second winding start position (for changing the Opti mode frame), are described below.
This can be dealt with simply by rotating each of the air injection pipes 21 and 22, and there is no need to adjust the height. Further, since no lifting means such as a lifting table is required, the structure is simplified.

[0026]

According to the first aspect of the present invention, there is provided a web cutting apparatus having a simple structure without the need to adjust the cutting height even when the winding start position at which the web is wound around the reel spool changes. be able to. According to the second aspect of the present invention, it is possible to provide a web cutting device capable of reliably cutting webs having different heights only by selecting a short air injection pipe and a long air injection pipe whose heights are determined in advance. Claim 3
According to the invention, it is possible to provide a web cutting device which is compact and can surely raise and store the air injection pipe.

[Brief description of the drawings]

FIG. 1 is a side view of a web cutting device according to an embodiment of the present invention.

FIG. 2 is a front view of the web cutting device taken along line II-II in FIG.

FIG. 3 is an enlarged side view of the web cutting device according to one embodiment of the present invention.

FIG. 4 is a schematic side view of a web winding device to which the present invention is applied.

FIG. 5 is a schematic plan view of the web winding device excluding the stocker 11;

FIG. 6 is an explanatory diagram of a winding step in a web winding device to which the present invention is applied.

[Explanation of symbols]

 3 Reel Drum 5 Rail 6 Reel Spool 7 Secondary Carriage 13 Primary Carriage 15 Web Cutter 21 Short Air Injection Pipe 22 Long Air Injection Pipe 24 Rotary Cylinder

Claims (3)

[Claims] 1. A reel drum for guiding a web, left and right rails on which a reel spool for winding the web is mounted,
A primary carriage that supplies the reel spool from the standby position to the take-up position on the rail, and that supports and rotates the reel spool until the predetermined take-up diameter is reached at the take-up position; and In a web take-up device comprising a secondary carriage that takes over and rotates and supports until a predetermined final take-up diameter is reached, and conveys a paper roll obtained by completion of take-up to a payout position, Both the first winding start position at which the new reel spool is supplied onto the rail and the second winding start position slightly above the rail can be arbitrarily selected.
A first web cutter for cutting the web running between the new reel spool and the take-up roll when the new reel spool is at the second winding start position, and a new web cutter when the new reel spool is at the second winding start position. A second web cutter for cutting the web between the reel spool and the winding roll is provided, and each of the first and second web cutters is arbitrarily moved between a use position and a storage position. A web cutting device in a web winding device, comprising a moving means. 2. A short air jet at a height at which the first web cutter injects air onto a web running between a new reel spool and a take-up roll when the first web cutter is at a first winding start position. An injection pipe, wherein the second web cutter is at a height at which air is jetted to a web running between a new reel spool and a take-up roll when in a second winding start position. 2. The web cutting device according to claim 1, wherein the web cutting device is an air injection pipe. 3. The web winding device according to claim 2, wherein said moving means is a rotary cylinder, and moves each of the air injection pipes between an upright use position and a folded storage position. Web cutting device in the device.