JPH1129247A - Web windup reference roll - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a web windup reference roll capable of exhausting even the air entrapped in the layer of a web roll and also exhausting air even from a roll with a large web width and roll diameter. SOLUTION: A windup reference roll 3 rotated while being brought in contact with the surface of a web roll R under windup is formed so that narrow grooves 31 for narrow deep grooves are formed spirally and wide grooves 32 for wide shallow grooves are formed spirally and overlappingly with the narrow grooves 31 on the surface of the roll of the windup reference roll 3. Also air Ab accumulated at a portion corresponding to the wide grooves 32 on the surface layer of the web roll R is exhausted forcibly to the end of a web W because a flat part 33 adjacent to the wide grooves 32 is moved in the direction of a roll end part according to the rotation of the windup reference roll 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a web winding reference roll. More specifically, the present invention relates to a winding reference roll for rotating a web roll and running or guiding a web wound on the web roll in the longitudinal direction in a paper making machine, a printing machine, or the like. In the field of papermaking machines, reels such as a reel installed on the output side of a paper machine and a reel drum such as a winder that finishes into a small-diameter roll or slits a small width in a subsequent process are typical examples.

[0002]

2. Description of the Related Art In the above-mentioned web winding reference roll, when air is trapped between the roll surface and the web and an air bag is generated, the driving force for running the web is insufficient and the winding tension is insufficient. There is a problem that the roll becomes a roll and the commercial value is reduced, and furthermore, several surface layers are instantaneously broken when passing through the nip. Therefore, as a conventional technique, when the web comes in contact with the roll surface, the dynamic air captured between the roll surface and the web can be exhausted from the roll surface. (JP-A-63-3154).
No. 43, Japanese Patent Publication No. 60-58392, etc.).

In the above prior art, as shown in FIG.
The web W is wound around the reel spool 6 and the reel spool 6 is rotated by a drive device, or the web roll R is rotated by bringing the rotating winding roll 3 into contact with the surface of the web roll R. In the winding device, the air bag Aa formed between the winding reference roll 3 and the web W can escape to the side or below the roll 3 and the adhesion between the web W and the winding reference roll 3 is good. As a result, the driving force can be secured.

[Problems to be solved by the invention]

However, as shown in FIG. 10, when air is entrained in the web layer of the web roll R wound on the reel spool 6 to generate an airbag Ab, the above-described conventional technique requires exhausting. Can not. As a result, when passing through the nip N where the web roll R and the winding reference roll 3 are in line contact, several surface layers of the web roll R are instantaneously broken, and winding is interrupted. In this case,
There is a problem that the new reel spool has to be loaded and re-wound and the productivity is reduced.

[0005] Particularly, recently, the papermaking speed has been improved, and the papermaking speed per minute has been sought to be increased from, for example, 1300 m to 1800 m. However, as the web running speed becomes faster, the web width increases. As the width becomes wider, it becomes more difficult for air to escape, and problems such as insufficient driving force and web breakage are more likely to occur.

In view of such circumstances, the present invention is directed to a web roll capable of exhausting even air trapped in a layer of a web roll and capable of reliably exhausting air even if the web is wide and the roll diameter is large. The purpose is to provide a criterion role.

[0007]

According to a first aspect of the present invention, there is provided a web winding reference roll which rotates while being in contact with the surface of the web roll being wound, and applies a rotational driving force to the web roll being wound. Alternatively, a winding reference roll for applying running tension to a web being wound on a web roll, wherein a narrow groove having a narrow width and a deep groove is spirally formed on the roll surface of the winding reference roll, and the width is large. The wide groove of the groove is spirally formed so as to overlap the narrow groove. Claim 2
The wide winding groove is characterized in that the wide groove has an arc-shaped cross section at the bottom of the groove in the roll axis direction, and is smoothly continuous with a flat portion between adjacent wide grooves. . The web winding reference roll according to claim 3, wherein the narrow groove and the wide groove are each formed as a two-way spiral groove that advances from the axial center portion of the roll toward both ends. Features. According to a fourth aspect of the present invention, the narrow groove and the wide groove are formed as spiral grooves in one direction from one end of the roll to the other end. Claim 5
The web take-up reference roll is placed on the surface of the take-up reference roll.
It is characterized by being subjected to tungsten carbide spraying. In the present invention, the web is a general term for paper, film, and the like.

According to the first aspect of the present invention, the air caught between the winding reference roll and the web can be exhausted in the circumferential direction of the roll through the narrow groove on the roll surface, so that the air is introduced into the web layer of the web roll. The entrapped air is stored between the web layers at portions corresponding to the wide grooves, and the stored air is rolled with the rotation of a winding reference roll having a spiral flat portion formed adjacent to the wide grooves. , The flat portion pushes out the air toward the roll end, and the air in the web layer can be exhausted. According to the invention of claim 2, since the groove bottom portion of the wide groove and the flat portion are smoothly continuous, the air in the web layer is
It is easy to move outward smoothly, and the air in the web layer can be almost completely pushed out. According to the third aspect of the present invention, since the spiral groove is formed from the axial center portion of the roll toward both ends, the exhaust distance is shortened.
Air can be exhausted even if the web width is wide.
According to the fourth aspect of the present invention, when the web width is small, the spiral groove in one direction of the roll can sufficiently exhaust air, and in this case, the groove processing on the roll becomes easy. According to the fifth aspect of the invention, since the friction coefficient is increased by the tungsten carbide on the roll surface, no slip occurs between the roll and the web, the web can be wound with a necessary tension, and the life of the roll surface is improved. it can.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. First, an embodiment of the present invention will be described based on an example in which the present invention is applied to a web winding device installed in a reel part of a paper machine. 6 is a schematic side view of a web winding device to which the present invention is applied, and FIG. 7 is a schematic plan view of the web winding device of FIG.

In FIGS. 6 and 7, reference numeral 1 denotes left and right frames.
A winding reference roll 3 (also referred to as a reel drum) is installed via a bearing 2 on the upper surface of the side on which the paper is sent. The winding reference roll 3 winds the web W around its outer periphery to give a running tension to the web W, or rotates in a state of contacting a web roll R wound on a reel spool 6 described later. The motor 4 rotates the web roll R. The motor 4 rotates the winding reference roll 3.

Left and right rails 5 are mounted on the upper surface of the left and right frames 1 to the left of the winding reference roll 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 a secondary carriage 7 at a winding position A on the right side of the rail 5 in the drawing, and the web W is Take up. Note that the diameter of the paper roll increases as the web W is wound, and the center position of the reel spool 6 also gradually moves away from the winding reference roll 3, so that the winding position A has a certain length.

The secondary carriage 7 has a carriage 7a on the operation side and a carriage 7a on the driving side, which run 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 carriage 7b on the driving side is provided with a center drive device 8 comprising a motor for rotating the reel spool 6 and a coupling. It is installed. In a case where the web roll R is rotated by the winding reference roll 3, the center drive device 8 is separated from the reel spool 6. When the winding of the web roll R is completed, the winding roll R (referred to as a web roll having reached a predetermined final winding diameter) is transported to the payout position B by the secondary carriage 7. 9
Reference numeral 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, above the winding reference roll 3, a stocker 11 for storing several new reel spools 6 is provided.
The transfer arm 12 supplies the reel spools 6 one by one from the stocker 11 to the primary carriage 13 therebelow. The primary carriage 13 includes a clamp that supports the supplied reel spool 6, a moving unit that moves the reel spool 6 from a standby position immediately above the winding reference roll 3 to a winding position at the right end on the rail 5, and an operation. On the side, a center drive device 14 including a motor and a coupling for applying a rotational driving force to the reel spool 6 is provided.

Next, a winding process by the above-described web winding device will be described. FIG. 8 is an explanatory diagram of the winding steps I to V.
The state indicated by I is a state immediately before the web 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 winding reference roll 3. The state indicated by the symbol II is a state in which the web roll R on the secondary carriage 7 has been wound up to the final diameter. At this point, the secondary carriage 7 slightly moves to the payout side, and at the same time, the primary carriage 13 moves to 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 running through the upper surface of the winding reference roll 3 and the lower surface of the new reel spool 6 and is continuous with the winding roll R on the secondary carriage 7. 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.

Further, the second winding start position of the new reel spool 6 is substantially the same as the position indicated by reference numeral II, and 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 which 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 paying out of the winding roll R has been completed.
3, the reel spool 6 is rotated by the center drive device 8 of the secondary carriage 7, and the web is wound up.
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 a web roll.

Next, the winding reference roll 3 applied to the winding device will be described. FIG. 1 is a front view of a winding reference roll 3 according to one embodiment of the present invention, FIG. 2 is a partially enlarged sectional view of FIG. 1 showing a narrow groove 31 and a wide groove 32, and FIG.
1 is a partial plan view and a partial cross-sectional view of a wide groove 32. FIG. 2 is a line schematically showing the cross-sectional shape of the wide groove 32 and the flat portion 33.

In FIG. 1, reference numeral 30 denotes a roll surface of the winding reference roll 3, reference numeral 34 denotes a center line for dividing the roll 3 into two parts in the axial direction, and reference numeral 35 denotes no groove formed along the center line 34. It is an intermediate separator. On this roll surface 30,
Several spiral narrow grooves 31 are formed from the intermediate separation band 35 toward the roll end. That is, the intermediate separator 3
From 5 to the right side in the figure, a spiral narrow groove 31 is formed that rotates to the right end of the roll when rotated in the direction of arrow r. A spiral narrow groove 31 is formed. Further, two spiral wide grooves 32 are superimposed on the narrow grooves 31.
Are formed from the intermediate separation zone 35 toward the roll end. That is, on the right side in the drawing from the intermediate separation band 35, a spiral wide groove 32 is formed which advances to the right end of the roll when rotated in the direction of arrow r. A spiral wide groove 32 is formed to advance to the left end. A flat portion 33 is formed between the wide groove 32 and the adjacent wide groove 32.

Hereinafter, the present invention will be described in more detail with reference to FIGS. The narrow groove 31 is narrower than the wide groove 32 and the width W1 is narrow and the depth d1 is deep.
Is a shallow groove having a width W2 wider than the narrow groove 31 and a depth d2. As a result, the narrow groove 31 is formed in both the portion where the wide groove 32 is formed and the flat portion 33 adjacent to the wide groove 32. Will be formed.

The cross-sectional shape of the narrow groove 31 is not particularly limited, and may be a square groove as shown in FIG. The cross-sectional shape of the wide groove 32 is preferably an arc-shaped cross-section along the roll axis direction, and the seam between the arc and the flat is good at the center of the flat portion between the narrow grooves,
In addition, it is desirable that the flat portion 33 is smoothly connected to the flat portion 33.

The spiral angle of the narrow groove 31 is the same as the spiral angle of the wide groove 32. In this case, several narrow grooves 31 are formed on both the bottom of the wide groove 32 and the flat portion 33.

The narrow groove 31 is mainly for discharging the air bag Aa between the winding reference roll 3 and the web W, and the wide groove 32 is mainly for discharging the air bag Ab in the layer of the web roll R. Therefore, the width, depth, and number of grooves necessary to perform these functions may be formed, and may be determined from the type and width of the web (ie, the width of the winding roll). As an example, in the winding reference roll 3 having a diameter of about 1500 mm and a length of about 7500 mm, the narrow groove 31 has a width W1 of 1.5 mm, a depth d1 of 4 mm, and seven grooves at intervals of 10 mm. Are formed at a pitch of 70 mm. The wide groove 32 is an arc groove having a width W2 of 30 mm, a depth d2 of 0.8 mm, and a groove cross section in the roll axis direction having a radius of 141 mm, and is 40 mm adjacent to the wide groove 32. Are formed at a pitch of 70 mm with one groove so that the flat portion 33 can be formed.

The roll surface 30 of the winding reference roll 3 is preferably sprayed with tungsten carbide. In this case, an appropriate friction is generated between the roll surface 30 and the web W, a necessary running tension is applied to the web W without causing a slip, and the wear of the roll surface 30 is reduced, thereby improving the life of the web W. Can be done.

Next, the air discharging operation of the winding reference roll 3 in the present embodiment will be described. FIG. 4 is an explanatory diagram of the entrainment and exhaustion of air during winding of the web roll R, and FIG. 5 is an explanatory diagram of an exhausting operation of air in the layer of the web roll R by the winding reference roll 3. First, as shown in FIG. 4, the web W is wound around the outer circumference of about 1/4 of the winding reference roll 3 and wound around the web roll R, and the outer circumference of the web roll R is wound on the winding reference roll 3. 3 is considered to be in use, a state in which a torque is given from the winding reference roll 3 or a state in which it is rotated by another drive device.

In the above state, when air a is wound between the web W and the winding reference roll 3 as shown in FIG. 2A, the air a mainly passes through the narrow groove 31 and is wound. The air is exhausted below the take-up reference roll 3 (see arrow Aa). Also,
As shown in FIG. 2B, when the air b is caught between the webs W when the web W is wound on the web rolls R, the air is blown between the surface webs W of the web rolls R. Ab is stored (see FIG. 10).
b is exhausted mainly by the wide groove 32 as follows.

That is, as shown in FIG. 5, the inner layer web W near the reel spool 6 side of the web roll R
Extends flat in the width direction, but the surface web W close to the winding reference roll 3 is pressed against the corrugated roll surface 30 by the wide groove 32 and the flat portion 33 of the winding reference roll 3, The web W is waved in the width direction. In this case, the air Ab caught in the layer of the web W easily accumulates in the portion corresponding to the wide groove 32 having a large space between the web W and the reel spool 6. As the web roll R and the winding reference roll 3 rotate, the flat portion 33 and the wide groove 32 move toward the roll end, so that the air Ab accumulated between the webs W is pushed by the flat portion 33. Then, as shown by the arrow, it moves toward the roll end. Therefore, even if the air Ab is caught in the layer of the web roll R, it can be exhausted from the end of the roll. In the present embodiment, the wide groove 3 is used.
2 is formed from the intermediate separation band 35 to both ends of the roll, so that the length of each of the wide grooves 32 on the left and right sides is shortened, so that even when the width of the web or the winding reference roll 3 is large, air exhaust is ensured. There is an advantage that it can be performed.

Next, another embodiment of the present invention will be described. In the above embodiment, both the narrow groove 31 and the wide groove 32 are formed as spiral grooves in opposite directions from the intermediate separation band 35, but are formed as spiral grooves in one direction from one end of the roll to the other end. You may. In this case, if the axis length of the winding reference roll is short, air can be exhausted. Further, since this configuration is simple in processing, it can be manufactured at low cost. Further, in the above-described embodiment, an example of paper is given as the web. However, similarly, it is possible to exhaust air that is entrapped by other films and the like.

[0029]

According to the first aspect of the present invention, air trapped between the winding reference roll and the web can be exhausted in the circumferential direction of the roll through the narrow groove on the roll surface, and the web layer of the web roll can be evacuated. The air entrained therein is accumulated between the web layers at the portions corresponding to the wide grooves, and the accumulated air is generated by the rotation of the winding reference roll formed with a spiral flat portion adjacent to the wide grooves. As a result, the flat portion pushes out the air toward the roll end, and the air in the web layer can be exhausted. According to the invention of claim 2, since the groove bottom portion of the wide groove and the flat portion are smoothly continuous, the air in the web layer is
It is easy to move outward smoothly, and the air in the web layer can be almost completely pushed out. According to the third aspect of the present invention, since the spiral groove is formed from the axial center portion of the roll toward both ends, the exhaust distance is shortened.
Air can be exhausted even if the web width is wide.
According to the fourth aspect of the present invention, when the web width is small, the spiral groove in one direction of the roll can sufficiently exhaust air, and in this case, the groove processing on the roll becomes easy. According to the fifth aspect of the invention, since the friction coefficient is increased by the tungsten carbide on the roll surface, no slip occurs between the roll and the web, the web can be wound with a necessary tension, and the life of the roll surface is improved. it can.

[Brief description of the drawings]

FIG. 1 is a front view of a winding reference roll according to an embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view of a narrow groove 31 and a wide groove 32 in FIG.

3 is a partial plan view and a partial cross-sectional view of a narrow groove 31 and a wide groove 32. FIG.

FIG. 4 is an explanatory diagram of air entrainment and exhaust during winding of a web roll.

FIG. 5 is an explanatory diagram of an exhaust operation of air in a layer of a web roll by a take-up roll.

FIG. 6 is a schematic side view of a web winding device to which the present invention is applied.

FIG. 7 is a schematic plan view of the web winding device of FIG. 6;

FIG. 8 is an explanatory diagram of a winding step in the web winding device of FIG. 6;

FIG. 9 is an explanatory diagram of an airbag Aa.

FIG. 10 is an explanatory diagram of an airbag Ab.

[Explanation of symbols]

 3 Rewind reference roll 6 Reel spool 31 Narrow groove 32 Wide groove

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroki Hamasago 8230 Tamashima Otoshima, Kurashiki City, Okayama Prefecture Inside the Okayama Plant of Sumitomo Heavy Industries, Ltd. (72) Inventor Silvo Mikkonen Finland 01490 Banta, Sarakakuya 6 (72) Inventor Maluk Kytossonen Finland 04660 Numminen, Jokibarrentier 141 (72) Inventor Maluk Glasten Finland 04430 Jarvenpa, Jalon Kittie 37 A

Claims (5)

[Claims] 1. A web roll which is rotating while being in contact with the surface of a web roll being wound, applies a rotational driving force to the web roll being wound, or applies a running tension to the web being wound on the web roll. A winding reference roll, on the roll surface of the winding reference roll, a narrow groove of a narrow deep groove is formed in a spiral shape, and a wide groove of a wide shallow groove overlaps the narrow groove in a spiral shape. A web take-up reference roll, which is formed. 2. The wide groove according to claim 1, wherein a cross-sectional shape in the roll axis direction at the bottom of the wide groove is arc-shaped, and is smoothly continuous with a flat portion between the adjacent wide grooves. Reference web take-up roll. 3. The narrow groove and the wide groove are each formed as a two-way spiral groove that advances from the axial center of the roll toward both ends. Or a web take-up reference roll according to 2. 4. The web winding according to claim 1, wherein each of the narrow groove and the wide groove is formed as a spiral groove in one direction from one end to the other end of the roll. Taking reference role. 5. The method according to claim 1, wherein the surface of the winding roll is sprayed with tungsten carbide.
2. A web winding reference roll according to 2, 3, or 4.