JP2001121050A - Roll coater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To save labor in the replacing work of the underside sending or coating roll of a roll coater comprising an upside sending or coating roll, an underside sending or coating roll, and a doctor roll. SOLUTION: An upside sending or coating roll 2 and an underside sending or coating roll 3 are supported by separate frames 6, 18. At least one of the frames 6, 18 is made slidable. When the downside sending or coating roll 3 is replaced, at least one of the frames 6, 18 is caused to slide to separate the frames 6, 18 from each other and the upside sending or coating roll 2 is removed from the upper side of the underside sending or coating roll 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll coater for applying a coating to the front surface or the back surface of a plate-shaped object to be coated such as a building plate.

[0002]

2. Description of the Related Art As shown in FIG.
(91) is a lower roll (92), an upper roll (93), and a doctor roll (94) adjacent to the upper roll (93) from the side.
The shaft (92A) of the lower roll (92) is supported by a bearing (96) of the main frame (95), and the upper roll (92)
The shaft (93A) of (93) is supported by a sliding bearing (98) which is slidably mounted on the upper sliding frame (97), and the shaft (94A) of the doctor roll (94) is moved sideways. A paint bearing (101) is installed below the lower roll (92), supported by a sliding bearing (100) mounted on the moving frame (99) so as to be slidable in the horizontal direction. .

In the roll coater (91), the handle (102) is turned to rotate the upper roll (93) and the lower roll (9).
2), the handle (103) is turned to adjust the gap between the upper roll (93) and the doctor roll (94), and the upper roll (93) is used as a coating roll. The roll (9
3) and the doctor roll (94), paint is supplied, and the upper roll (93) is used as a feed roll between the roll (93) and the lower roll (92). The paint W is fed, and the paint adhered to the surface of the upper roll (93) is transferred to the surface of the paint W, or the lower roll (92) is also used as a paint roll. Roll on the back side (92)
Transfer the paint adhered to.

[0004]

In the conventional roll coater (91), when replacing the lower roll (92),
After removing the upper roll (93) from the upper sliding frame (97), the lower roll (92) had to be removed from the main frame (95), which required a troublesome operation.

[0005]

According to the present invention, as a means for solving the above-mentioned conventional problems, an upper feed roll (2) or a paint roll and a lower feed roll or a paint roll (3) are provided. A doctor roll (4) is adjacent to the feed roll (2) or the coating roll and / or the lower feed roll or the coating roll (3), and the upper feed roll
(2) or between the paint roll and the doctor roll (4) and / or
Alternatively, paint is supplied between the lower feed roll or painting roll (3) and the doctor roll (4), and the upper feed roll is supplied.
(2) or a roll coater (1) for feeding a plate-shaped workpiece W between a coating roll and a lower feed roll or a coating roll (3) to coat one or both sides of the workpiece W;
, The upper feed roll (2) or paint roll and the lower feed roll or paint roll (3) are supported on separate frames (6, 18), respectively, and the upper feed roll (2) or paint roll is Frame (6) and / or frame (18) of lower feed roll or paint roll (3)
(6,18) An object of the present invention is to provide a roll coater (1) which is slidable in a direction away from each other. Further, the upper feed roll
(2) or the coating roll and the lower feed roll or the coating roll (3) are synchronously rotated in opposite directions by one drive source (35), respectively, and the upper feed roll (2) or the coating roll side is rotated. The lower feed roll or painting roll
(3) The endless chain (53) or the endless belt that transmits rotation between the endless chain (53) and the endless belt has slack, and the endless chain (53) or the endless belt has a tension sprocket.
(57) Or it is desirable that tension is exerted by the tension pulley.

[0006]

[Operation] The frame (6) supporting the upper feed roll (2) or the paint roll and / or the frame (18) supporting the lower feed roll or the paint roll (3) is slid to form the frame (6). , 18) Separate each other. The upper feed roll (2) or paint roll is then removed from above the lower feed roll or paint roll (3) and the lower feed roll (2) or paint roll is removed from the lower feed roll (2) without removing it from the frame (6). Feed roll or paint roll (3) can be removed from the frame (18).

When the upper feed roll (2) or the coating roll and the lower feed roll or the coating roll (3) are synchronously rotated in opposite directions by a single driving source (35), the above-mentioned operation is performed. An endless chain (53) or an endless belt for transmitting rotation between the upper feed roll (2) or the paint roll and the lower feed roll or paint roll (3) has a slack, and the endless chain ( 53) Alternatively, tension is applied to the endless belt by a tension sprocket (57) or a tension pulley. Then the upper feed roll (2) or paint roll frame (6) and the lower feed roll or paint roll (3) frame (18)
When separating the endless belt, the endless chain (53) or the endless belt can be made to follow.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an embodiment shown in FIGS. 1 to 7. The roll coater (1) is mainly composed of an upper feed roll (2), a lower coating roll (3) and the coating roll.
It consists of a doctor roll (4) adjacent to the side of (3).

The shaft (2A) of the feed roll (2) is mounted on the upper ends of a pair of left and right fixed frames (6) erected on a base (5) via a lifting base (24). Elevating frame (19)
Supported by the bearing (7). As shown in FIG. 2, a pair of left and right worm gears (21) are mounted in the fixed frame (6), and a rotating rod (23) to which a handle (22) is mounted is inserted and supported at one end. A male screw bar (25) (not shown) below the gear (27) of the worm gear (21) is a support plate (26).
And is screwed to the screw block (26A). The rotation of the handle (22) raises and lowers the elevating base (24). The lower end of a pair of front and rear rods (28, 28) suspended from the elevating frame (19) is moved to the elevating base (24). Is connected.

Reference numeral (29) denotes an air cylinder fixed in the fixed frame (6). The rod (30) of the air cylinder (29) is connected to the lower surface of the lifting frame (19).
A bracket (32) to which a rack (31) is attached is suspended from one end of the pair of left and right elevating bases (24), and the rack (31) is passed over the fixed frame (6, 6). The gears (34) at both ends of the rotatable rod (33) are engaged with each other.

The shaft (3A) of the coating roll (3) is a pair of left and right rails (15, 15) laid on a base (5) as shown in FIG.
15) At the upper end of a pair of left and right sliding frames (18, 18) erected on a sliding base (17) that is slidably mounted via grips (16, 16) The shaft (4A) of the doctor roll (4) is supported by a mounted bearing (20), and a pair of left and right slides disposed at the upper end of the slide frame (18) as shown in FIG. Sliding bearing (11) slidably supported between upper and lower guide rails (10, 10) of sliding bearing frame (9) slidably disposed on rail (8).
It is supported by.

The sliding bearing frame (9) is mounted on the sliding frame.
The air cylinder (12) attached to (18) can reciprocate from the position shown by the dashed line in FIG. 31 approaching the coating roll (3) to the position shown in solid line in FIG. 3 away from the coating roll (3). The dynamic bearing (11) rotates the handle (13) forward and reverse to rotate the screw shaft (14) via a worm gear (not shown).
Can reciprocate in the direction approaching or away from the coating roll (3) by forward and reverse rotation.

A motor (35) with a speed reducer, which is a driving source of the roll coater (1), is installed on a base (5), and a rotating shaft of the motor (35) has a sprocket (36) as shown in FIG. )
Is installed. In addition, the base (5) has a rotation transmission shaft (3
7) is supported via a pair of left and right bearings (38, 38),
A rotation transmission sprocket (39) is loosely fitted to the rotation transmission shaft (37), and cup springs (40, 40) fixed to the rotation transmission shaft (37) are provided on both sides of the sprocket (39). We are in pressure contact. A roll driving sprocket (41) is attached to one end of the rotation transmission shaft (37), and a sign disc provided with a plurality of holes (42A) at predetermined intervals around the circumference at the other end.
(42) is attached, and a proximity or photoelectric sensor (44) is protruded from the column (43) erected on the base (5) toward the disk (42).

Further, a double sprocket (45, 46) and a tension sprocket (47) are supported on the sliding frame (18), and two guide sprockets are mounted on the fixed frame (6).
(48,49) are supported. A drive chain (50) is suspended between the sprocket (36) of the motor (35) and the rotation transmission sprocket (39) as shown in FIGS. 1 and 5, and a roll drive side sprocket (41) and a guide sprocket (48,
49), Sprocket (51) of feed roll (2), Painting roll
(3) Sprocket (52), one of double sprockets (45)
Has a main chain (53) suspended, and a doctor roll
(4) Sprocket (54), one of double sprockets (4
6), the auxiliary chain (55) is suspended on the tension sprocket (47).

The main chain (53) has a slack, and the main chain (53) is a tension sprocket attached to the tip of an arm (56) pivotally attached to a fixed frame (6). Tension is exerted by (57),
A chain (59) having a weight (58) attached to the lower end is connected to the tip of the arm (56), and the chain (59) is connected to a guide sprocket (60) attached to the fixed frame (6). Guided. A hook rod (61) is rotatably attached to an intermediate portion of the arm (56),
The tension sprocket (57) is pulled through the chain (59) by the weight of the weight (58). And FIG.
In the normal state shown in (1), the hook (62) of the hook rod (61) is connected to the sliding frame while tension is applied to the main chain (53).
The arm (56) is engaged by engaging the engagement rod (63) of (18).
Fixing and sliding frame (18) and fixed frame (6)
Is connected and fixed.

In the above normal state, the handle (22) is rotated forward and reverse to raise and lower the feed roll (2) via the elevating base (24), rods (28, 28) and the elevating frame (19). Feed roll taking into account the thickness of the workpiece W to be coated and the amount of paint applied
Adjust the distance between (2) and the coating roll (3). The distance can be checked by the gauge (64) of the handle (22). At this time, the left and right lifting frames (19) move up and down synchronously, but the left and right racks (31) and the gears at both ends of the rotating rod (33) are further moved.
By (34), the left and right lifting frames (19) are smoothly raised and lowered synchronously. Further, rotate the handle (13) forward and reverse to slide the doctor roll (4) in the direction of the paint roll (3) or in the opposite direction to the paint roll (3) via the screw shaft (14) and the sliding bearing (11). The distance between the coating roll (3) and the doctor roll (4) is adjusted in consideration of the amount of the paint applied and the like.

After preparation for coating as described above, the motor (35) is driven to rotate the feed roll (2), the coating roll (3) and the doctor roll (4) in the directions shown by arrows in FIG. A paint is supplied between the paint roll (3) and the doctor roll (4), and the feed roll (2) and the paint roll (3)
And the plate-like workpiece W is fed between them to perform painting on the surface (lower surface) of the workpiece W. During the painting process, between the feed roll (2) and the painting roll (3), or the painting roll
When foreign matter H such as a worker's hand is caught between (3) and the doctor roll (4), rotation resistance is applied to each roll (2, 3, 4), and the rotation transmission sprocket ( 39) and cup spring
(40, 40), and a speed difference between the rotation transmitting sprocket (39) and the rotation transmitting shaft (37) due to the sliding is detected based on the number of rotations of the marker disc (42). The marker disk (42)
Is detected by, for example, a proximity sensor (44).

The rotating sprocket (39) and the rotation transmitting shaft (3)
When it is detected from the rotation speed of the marker disk (42) that a speed difference has occurred between the air cylinders (12, 29) and the control unit (not shown), the air cylinders (12, 29) are actuated, and as shown in FIG. 19), the feed roll (2) is raised to increase the distance between the feed roll (2) and the coating roll (3), and the doctor roll is further inserted through the sliding bearing frame (9).
Slide (4) away from the paint roll (3) to increase the distance between the paint roll (3) and the doctor roll (4), and at the same time stop the motor (35) and roll (2, 3, 4) Prevent foreign substances H such as hands from being caught between them.

When the paint roll (3) is replaced, FIG.
The weight (58) is placed on the base (64) as shown in (1), and the hook (62) of the hook rod (61) is disengaged from the engagement rod (63), and the main chain (53) is released. The main chain (53) is slackened, and the main chain (53) is slackened, and the main chain (53) is loosened by the sprocket (52) of the paint roll (3) and the feed roll (2). Remove from the sprocket (51) and slide the sliding frame (18) away from the fixed frame (6). Then, the feed roll (2) can be removed from the upper side of the coating roll (3) without being removed from the fixed frame (6). Feed roll like this
With (2) removed from above the coating roll (3), remove the coating roll (3) from the sliding frame (18) and replace it with another one.

The above embodiments do not limit the present invention. For example, the upper feed roll may be a coating roll, a doctor roll may be adjacent to the side of the upper coating roll, and the upper and lower surfaces of the plate-shaped workpiece may be coated, or the upper roll may be a coating roll. A doctor roll may be adjacent to the side of the roll, and the lower coating roll may be used as a feed roll to perform only one-side coating on the upper surface of the plate-like workpiece. In the above embodiment, the upper feed roll is attached to the fixed frame, and the lower paint roll is attached to the sliding frame. However, the upper feed roll is attached to the sliding frame, and the lower paint roll is attached to the fixed frame. Alternatively, both frames may be sliding frames. Further, one or both frames may be slidable in the vertical direction. The sliding moving means may use not only manual power but also other power such as hydraulic pressure, pneumatic pressure, and electric power. Further, each roll such as an upper roll, a lower roll, and a doctor roll may be driven by different drive sources. A pulley and a belt may be used for transmitting the rotation.

FIG. 8 shows still another embodiment. This embodiment relates to a double-sided coating roll coater (71) having doctor rolls (74A, 74B) adjacent to the upper and lower coating rolls (72, 73).
In, when the screw block (77) is slid along the slide rail (78) for turning the handle (75) to mesh with the screw shaft (76), the screw block (77) is attached to the side of the female screw block (77). The tension sprocket (79) also moves and the main chain (80) is loosened, and the main chain (80) is moved to the upper and lower paint rolls.
(72, 73) from the sprockets (81, 82) and hooks (8) for connecting and fixing the fixed frame (83) and the sliding frame (84).
5) is disengaged from the engaging pin (86), and the sliding frame (84) is slid to be separated from the fixed frame (83). The dotted line in the figure (8
7A and 87B) are sliding bearing frames of the doctor rolls (74A and 74B).

[0022]

As described above, according to the present invention, it is not necessary to remove the upper feed roll or the paint roll from the frame when replacing the lower feed roll or the paint roll, so that the lower feed roll or the paint roll is replaced. Work is greatly labor-saving.

[Brief description of the drawings]

 1 to 7 show one embodiment of the present invention.

FIG. 1 is a side view illustrating a normal state.

FIG. 2 is a perspective view illustrating an upper roll elevating mechanism.

FIG. 3 is an explanatory view of a doctor roll mounting structure.

FIG. 4 is an explanatory view of a sliding frame installation structure.

FIG. 5 is an explanatory view of a rotation transmission mechanism.

FIG. 6 is an explanatory view of a state where a roll interval is enlarged.

FIG. 7 is an explanatory view of the separation movement between the frames.

FIG. 8 is an explanatory view of another embodiment of the chain suspension style.

FIG. 9 is an explanatory side view of a conventional example.

[Explanation of symbols]

 1,71 Roll coater 2,72 Upper feed roll or paint roll 3,73 Lower paint roll 35,88 Drive source (motor) 4,74A, 74B Doctor roll 6,18,83,84 Frame 53,80 Main Chain (endless chain) 57,79 Tension sprocket W Workpiece

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[Procedure amendment]

[Submission date] November 2, 1999 (1999.11.
2)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8

Claims (2)

[Claims] An upper feed roll or a paint roll and a lower feed roll or a paint roll are provided, and a doctor roll is provided on the upper feed roll or the paint roll and / or the lower feed roll or the paint roll. Are adjacent,
A paint is supplied between the upper feed roll or painting roll and the doctor roll and / or between the lower feed roll or painting roll and the doctor roll, and the upper feed roll or the painting roll and the lower feed roll or the painting are supplied. In a roll coater which feeds a plate-shaped object to be coated between the rolls and coats one or both surfaces of the object to be coated, an upper feed roll or a coating roll and a lower feed roll or a coating roll are separated from each other. A roll coater characterized in that the frame is supported by a frame and the upper feed roll or paint roll frame and / or the lower feed roll or paint roll frame can be slid in a direction in which the frames are separated from each other. 2. The upper feed roll or paint roll and the lower feed roll or paint roll are synchronously rotated in opposite directions by a single driving source, respectively, and the upper feed roll or paint roll and the upper feed roll or paint roll are rotated in opposite directions. The endless chain or endless belt that transmits rotation between the lower feed roll or the coating roll side has slack, and tension is applied to the endless chain or endless belt by a tension sprocket or a tension pulley. 2. The roll coater of claim 1, wherein