JP3125066B2 - Roll cleaning device in coating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device for a roll in a coating device, and more particularly to a cleaning device for removing dirt attached to the outer peripheral surface of a roll in a direct coating device such as a lip coater or a comma coater.

[0002]

2. Description of the Related Art In a direct coating apparatus such as a lip coater or a comma coater, a roll is often caused by the backing of a resin due to a defect of a side dam or a dust brought in by a web itself. For example, there is a problem that dirt adheres to the outer peripheral surface of the backup roll.

[0003] Conventionally, a method has been adopted in which an operator extends his hand to near the roll and wipes it with a piece of cloth against the dirt on the roll as described above.

However, in this case, of course, the removal of dirt can be performed only within the reach of the worker, and involves a danger. Especially in lip coaters,
Since the backup roll has such a structure that it is largely wound around the web, it is very difficult to remove the adhered dirt by hand.

Although a large-scale method of stopping the operation and cleaning the rolls with the web cut has been adopted,
Work efficiency had to be greatly reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has as its object to safely and reliably remove dirt from a roll without stopping operation. To provide a cleaning device that can be used.

[0007]

According to a first aspect of the present invention, there is provided a cleaning apparatus for cleaning an outer peripheral surface of a roll in a coating apparatus, wherein a support shaft extending in the same direction as the axial direction of the roll is provided. A guide rail supported in the vicinity of the roll so as to be rotatable forward and backward and extending in the same direction as the axial direction of the support shaft is provided near the support shaft, and the support shaft reciprocates on the same shaft center by the guide rail. An arm extending in a direction intersecting with the support shaft, which is assumed to be movable, is attached to the support shaft, and a cleaner portion disposed in a region facing the outer peripheral surface of the roll is attached to the arm, and the cleaner portion is Directly or indirectly, the arm is rotated by a predetermined angle against the urging force to rotate the arm, and the arm is retracted from the roll. Status It is possible to change a contact point of the cleaner portion with respect to the outer peripheral surface of the roll by moving a certain cleaner portion against the outer peripheral surface of the roll, and moving the support shaft on the same axis along the guide rail. It is made possible.

According to a second aspect of the present invention, there is provided the cleaning device according to the first aspect, wherein a locking portion formed of a small hole or notch extending in a radial direction is provided at each of right and left ends of the support shaft or at one of the left and right ends. The support shaft can be rotated or reciprocated from the outside of the coating apparatus by using a long-axis operation member provided with an operation end portion engageable with the locking portion. is there.

According to a third aspect of the present invention, in the cleaning device according to the first or second aspect, the guide rail is extended to an outside of a main body frame of the coating apparatus, and the support shaft is connected to the guide rail. By moving the cleaner portion to a position corresponding to the extended portion, a part or the entirety of the cleaner portion is disposed outside the main body frame, thereby facilitating replacement of the cleaner portion.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the "cleaner portion" means that at least the outer surface on the roll side is made of cloth (knitted fabric, non-woven fabric, etc.), synthetic resin foam (sponge, etc.), rubber, pulp, etc. Refers to, but is not limited to. In short, any material can be used as long as dirt on the roll can be wiped off at least on the outer surface on the side in contact with the roll. Alternatively, a cleaner portion having an edge made of a hard member such as a metal or a synthetic resin may be used, and the attached dirt may be scraped off by the edge.

In the following description, the "width direction" means the axial direction of a roll to be cleaned unless otherwise specified. This is the same direction as the axial direction of the support shaft.

[0012]

According to the first aspect of the present invention, when the roll is cleaned, the cleaner portion attached to the arm is located in a region facing the outer peripheral surface of the roll. Since the cleaner portion is urged in the direction of retreating from the roll, the cleaner portion disposed in a region facing the outer peripheral surface of the roll does not exist on the outer peripheral surface of the roll. In this state, the support shaft is rotated by a predetermined angle against the urging force. Thereby, the arm rotates, and the cleaner part in the retracted state from the roll can be moved on the outer peripheral surface of the roll accordingly, and the cleaner part can be brought into contact with the outer peripheral surface of the roll. . If the roll is rotated in this state, the cleaner moves relative to the outer peripheral surface of the roll, whereby the dirt attached to the roll is removed by the cleaner. The contact pressure of the cleaner may be adjusted (adjusted) according to the degree of dirt on the roll.

To change the position of the cleaner portion in the width direction on the outer peripheral surface of the roll, the support shaft may be moved in a desired direction on the same axis. That is, if the support shaft is moved, the arm is linked (the arm moves in the same direction), and at the same time, the cleaner moves in the width direction.
The position in the width direction of the cleaner portion on the outer peripheral surface of the roll can be changed.

Thus, in the cleaning device of the present invention, dirt on the outer peripheral surface of the roll can be removed by rotating the support shaft and moving in the width direction.

According to a second aspect of the present invention, a locking portion is provided at both left and right ends of the support shaft or at one of the left and right ends. The operator uses a long-axis operation member that can be engaged with the locking portion, that is, in a state where a part of the operation member is engaged with the locking portion, the support shaft is moved in a desired direction. A force can be transmitted to the support shaft via the operating member so that the support shaft rotates in the vertical direction or the support shaft moves in the axial direction. Thereby, the rotational movement and the reciprocating movement of the support shaft can be easily performed.

In the cleaning device according to the third aspect, since the guide rail is extended to the outside of the main body frame of the coating device, the support shaft is moved to a position corresponding to the extended portion. Then, a part or the whole of the cleaner portion can be disposed outside the main body frame, and thereby the replacement of the cleaner portion is facilitated.

[0017]

An embodiment of the present invention will be described with reference to the drawings.

In this embodiment, a cleaning device applied to a backup roll in a lip coater type coating device is shown. However, the cleaning device of the present invention is not limited to this, and may be, for example, a guide roll, a feed roll, a nip roll, and others. Rolls.

In FIG. 1, reference numeral (W) denotes a web. The web (W) is sequentially passed through a spread roll (S) provided at the front of the coating device (A) and a feed roll (F) provided at the upper portion of the coating device (A).
It reaches the backup roll (B) arranged behind the spread roll (S).

A nozzle head (H) having a doctor edge is disposed below the backup roll (B). The coating liquid is jetted from the nozzle head (H) under pressure and applied to the running web (W).

A cleaning device (10) is provided above the backup roll (B). In this embodiment, the cleaning device (10) is connected to the backup roll (B).
, But may be provided behind the backup roll (B) if the running of the web (W) is not hindered.

Hereinafter, the cleaning device (1) will be described with reference to FIGS.
0) will be described. The cleaning device (10) is roughly divided into a fixed part (11) and a moving part (21). The fixing portion (11) is fixed to the main body of the coating apparatus, and includes a fixing base portion (13) having a rectangular cross section extending in the width direction as clearly shown in FIG. On the lower surface of the fixed base (13), a long rail holder (14) extending in the width direction is attached to the fixed base (13) with screws or bolts. The rail holding part (14) is composed of two plate bodies (14a) (14b) which are overlapped with each other.

Guide rails (15) each having a U-shaped cross section extending in the width direction are attached to the front and rear sides (right and left sides in FIG. 2) of the lower surface of the rail holding portion (14). ing. Each of the guide rails (15) has a vertical portion (15a) extending downward from the lower surface of the rail holding portion (14), and a portion outside the upper end of the vertical portion (15a) (to the front guide rail (15)). The upper horizontal part (15b) extending forward and rearward if it is on the rear guide rail (15)
And a lower horizontal portion (15c) extending outward from the lower end of the vertical portion (15a). These guide rails (15)
As shown in FIG. 3, one end side in the longitudinal direction is formed by an extending portion (16) located outside the frame body (a) of the coating apparatus (A). The length of the extending portion (16) is not particularly limited, but is approximately equal to the entire width of the moving portion (21) (described later) in the cleaning device (10).
Preferably, the dimensions are slightly larger. Note that the code (1
7) is a cover extending downward from the fixed base (13).

The fixed base (13) and the rail holding part (1
4), the guide rail (15), and the cover (17) constitute a fixed part (11).

Next, the moving section (21) will be described. If the moving part (21) is described in relation to the fixed part (11), it can be reciprocated in the width direction along the guide rail (15) of the fixed part (11) having the above-described configuration.
It can be said.

As shown in FIG. 2, the moving portion (21) has a moving portion main body (22) extending in the width direction at a position below the guide rail (15). The moving part body (22) has a flat plate shape, and the guide rail (15)
And the rail holding portion (14).

At the front end and the rear end of the moving unit main body (22),
As shown in FIGS. 2 and 6, opposed pulley mounting plates (23) are erected and extend in the width direction. These pulley mounting plates (23) are provided with bolt holes (24) penetrating in the thickness direction at two places at the upper part and three places at the lower part. A bolt (25) is screwed into each of the bolt holes (24) from the outside, and a pulley (26) is rotatably attached to a leading end of the bolt (25). As a result, a plurality of pulleys (26) (26)... Are juxtaposed in the width direction at each of the upper part and the lower part inside each pulley mounting plate (23). As clearly shown in FIG. 2, the upper pulley (26) contacts the lower surface of the upper horizontal portion (15b) of the guide rail (15) and slides on this surface. The lower pulley (26) contacts the upper surface of the lower horizontal portion (15c) of the guide rail (15) and slides on this surface.

At both ends of each pulley mounting plate (23), as clearly shown in FIGS. 4 and 6, the outer end surface (15c) of the lower horizontal portion (15c) of the guide rail (15). For the front guide rail (15), the front end face, the rear guide rail (1
5) Auxiliary pulley (27) sliding on the rear end face)
Is provided. The pulley (26) and the auxiliary pulley (27) roll on the guide rail (15) by an externally applied force, so that the moving unit main body (22), and hence the moving unit (21) described later. Reciprocate in the width direction along (guided to) the guide rail (15) (see arrows in FIGS. 3 and 4).

As shown in FIGS. 4 and 6, bearings (28) are attached to both ends in the width direction on the lower surface of the moving unit main body (22).
A support shaft (29) extending in the width direction is supported rotatably forward and backward. An extension (30) extending in the width direction is provided at one end (the right end in FIG. 4) of the support shaft (29), and extends through the extension (30) in the radial direction. A locking portion (31) formed by the inserted hole is provided. Locking part (31)
As shown by the dotted line in FIG. 4, the radial central region has substantially the same diameter, and the diameter gradually increases from the upper end and the lower end of the radial central region toward the opening. It has become. The locking portion (31) is not limited to the above, and may be formed by a groove-shaped notch as shown in FIG.

As shown in FIG. 4, two elongated plate-like arms (32) are mounted on the support shaft (29) at one end of the arms (32). Each of the arms (32) is attached near the inside of the bearing (28), and in the attached state, the arm (32) extends in a direction orthogonal to the support shaft (29). Also, between both arms (32)
On the side of the other end (free end) of the arm (32) facing the backup roll (B), a cylindrical shaft (3
3) is installed, and a cloth (3) is attached to the cylindrical shaft (33).
4) is detachably wound. The cylindrical shaft body (33)
And the cloth (34) constitute a cleaner portion (35).

At least one of the two arms (32) is, for example, a spring or rubber (not shown).
The cleaner portion (35) is constantly urged in a direction to retract from the backup roll (B) (see a two-dot chain line in FIG. 2). Thereby, even if the cleaner part (35) is arranged in the area facing the outer peripheral surface of the roll (b), the cleaner part (35) is not rotated unless the support shaft (29) is rotated against the urging force of the spring. The outer peripheral surface (b) of the roll is not abutted. Instead of urging the arm (32), a method of urging the support shaft (29) may be adopted. Or,
The cleaner section (35) can be directly urged.

In the cleaning device (10) having the above-described structure, as described above, by moving the support shaft (29) in the width direction, the entire moving portion (21) is guided by the guide rail (15). Move in the width direction. When the support shaft (29) is rotated about the axis of the support shaft (29), the arm (32) rotates in the same direction, and at the same time the cleaner (35) rotates. Move. Such movement or rotation of the support shaft (29) in the width direction is performed by the support shaft (29).
Can be achieved by applying external force to
In the present embodiment, this is a T-shaped operation member ((4
0), see FIG. 5).

The operating member (40) has, for example, the following configuration. That is, the operation member (40)
As shown in FIG. 5, an operation arm (42) extending in a direction perpendicular to the handle portion (41) having a long axis extends in a longitudinal center portion of the rod-shaped handle portion (41). The free end of the operation arm (42) is bent at an L-shape (42).
a), the tip of which has a tapered portion (42) that can be engaged with a locking portion (31) drilled in the support shaft (29).
b).

As shown in FIG. 7, the tapered portion (42b) of the operating member (40) having the above structure is inserted into the engaging portion (31) of the support shaft (29).
1) Hold the hand and perform a rotation operation or a push-pull operation to move the support shaft (29) in a desired direction.

Hereinafter, a method of cleaning the backup roll (B) using the cleaning device (10) and the operating member (40) having the above configuration will be described.

At the time of cleaning the backup roll (B), the cleaner portion (35) attached to the arm (32) comes off the position opposite to the dirt-applied portion on the outer peripheral surface (b) of the backup roll (B). When in the position, the support shaft (29) is moved in the width direction using the operation member (40) (see arrows in FIGS. 3 and 4 and a dashed arrow in FIG. 7), and the cleaner portion (35) is attached to the dirt. Part. In this state, the support shaft (29) is rotated by a predetermined angle against the urging force of the spring (see the solid arrow in FIG. 7). Accordingly, the arm (32) rotates in the same direction, and accordingly, the cleaner portion (35) retracted from the backup roll (B) is moved onto the outer peripheral surface (b) of the backup roll (B). (In other words, the cleaner portion (35) can be brought into contact with the outer peripheral surface (b) of the backup roll (B)).
If the backup roll (B) is rotated in this state,
The cleaner part (35) relatively moves on the outer peripheral surface (b) of the backup roll (B), whereby dirt attached to the backup roll (B) is removed by the cleaner part (35). The contact pressure of the cleaner portion (35) with respect to the outer peripheral surface (b) may be adjusted (added or reduced) according to the degree of dirt on the outer peripheral surface (b) of the backup roll (B).

Outer peripheral surface (b) of backup roll (B)
When changing the position of the cleaner portion (35) in the width direction, the support shaft (29) may be moved in the axial direction using the operating member (40).

When replacing the cleaner section (35), the support shaft (29) is largely moved in the width direction using the operating member (40), and the entire moving section (21) of the cleaning device (10) is moved. Arrange on the extension (16) of the guide rail (15). Thereby, at least the cleaner portion (35) can be kept away from various members constituting the coating device (A), the cloth (34) wound around the cylindrical shaft (33) can be removed, and a new cloth can be obtained. Exchange to (34) becomes easy.

[0039]

According to the present invention, dirt adhering to the roll can be safely and reliably removed without stopping the operation.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a state in which a cleaning device of the present invention is disposed above a backup roll.

FIG. 2 is an enlarged sectional view of a main part of the preceding figure.

FIG. 3 is a schematic front view showing a state in which the cleaning device of the present invention is disposed above a backup roll.

FIG. 4 is an enlarged view of a main part of the previous figure.

FIG. 5 is a front view of the operation member.

FIG. 6 is a perspective view of a moving unit in the cleaning device.

FIG. 7 is a schematic explanatory view showing a relationship between an operation member and a support shaft.

FIG. 8 is a perspective view showing another embodiment of the locking portion.

[Explanation of symbols]

 A: Coating device B: Backup roll b: Outer peripheral surface 10: Cleaning device 29: Support shaft 31: Locking portion 32: Arm 35: Cleaner portion 40: Operating member

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A 1-184075 (JP, A) JP-A 7-191569 (JP, A) JP-A 8-110728 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) B05C 11/00 B05C 1/08-1/12 B05D 3/00-3/14 B05D 1/28

Claims (3)

(57) [Claims] 1. A device for cleaning an outer peripheral surface of a roll in a coating device, wherein a support shaft extending in the same direction as the axial direction of the roll is supported in the vicinity of the roll so as to be rotatable forward and backward. A guide rail extending in the same direction as the axial direction of the support shaft is disposed near the support shaft, and the support shaft can reciprocate on the same axis by the guide rail, and a direction intersecting with the support shaft Is attached to the support shaft, a cleaner portion disposed in a region facing the outer peripheral surface of the roll is attached to the arm, and the cleaner portion is directly or indirectly retracted from the roll. The arm is rotated by rotating the support shaft at a predetermined angle against the urging force, whereby the cleaner portion retracted from the roll contacts the outer peripheral surface of the roll. And the support shaft can be moved on the same axis along the guide rail to change the contact position of the cleaner portion with respect to the outer peripheral surface of the roll. Roll cleaning device in construction equipment. 2. A locking portion comprising a small hole or a notch extending in a radial direction is provided at one or both left and right end portions of the support shaft, and an operation end portion engageable with the locking portion is provided. 2. The cleaning device according to claim 1, wherein the support shaft can be rotated or reciprocated from outside the coating device by using the provided long-axis operation member. 3. The cleaner according to claim 1, wherein the guide rail is extended to the outside of a main body frame of the coating apparatus, and the support shaft is moved to a position corresponding to an extended portion of the guide rail to thereby form one of the cleaner portions. The cleaning device according to claim 1, wherein the cleaning unit is easily replaced by a part or the entirety of the cleaning unit, the cleaning unit being disposed outside the main body frame.