JP3513060B2 - Roll coater - Google Patents

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 on the front surface or front and back surfaces of a plate-shaped object to be coated such as a building board.

[0002]

2. Description of the Related Art A conventional roll coater as shown in FIG.
(91) 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 the bearing (96) of the main frame (95), and the upper roll (92) is
The shaft (93A) of (93) is supported by a sliding bearing (98) mounted on the upper sliding frame (97) so that it can slide up and down, and the shaft (94A) of the doctor roll (94) is slid sideways. A moving bearing (99) is supported by a sliding bearing (100) horizontally slidably mounted, and a paint receiver (101) is installed below the lower roll (92). .

In the roll coater (91), the handle (102) is turned to rotate the upper roll (93) and the lower roll (9).
2) Adjust the gap between the upper roll (93) and the doctor roll (94) by turning the handle (103), and use the upper roll (93) as a paint roll. The roll (9
3) and the doctor roll (94) are supplied with a coating material, and the upper roll (93) is used as a feed roll between the roll (93) and the lower roll (92). The coating object W is sent to transfer the coating material adhering to the surface of the upper roll (93) to the surface of the coating object W, or the lower roll (92) also serves as a coating roll of the coating object W. Lower roll on the back (92)
Transfer the paint adhered to.

[0004]

In the above conventional roll coater (91), when replacing the lower roll (92),
The upper roll (93) had to be removed from the upper sliding frame (97), and then the lower roll (92) had to be removed from the main frame (95), which required time-consuming work.

[0005]

As a means for solving the above-mentioned conventional problems, the present invention comprises an upper feed roll (2) or a coating roll and a lower feed roll or a coating roll (3). The feed roll (2) or the coating roll and / or the lower feed roll or the coating roll (3) is adjacent to the doctor roll (4), and the upper feed roll
(2) or between paint roll and doctor roll (4) and /
Alternatively, the paint is supplied between the lower feed roll or the coating roll (3) and the doctor roll (4), and the upper feed roll is supplied.
(2) Alternatively, a roll coater (1) for feeding a plate-shaped object W to be coated between a coating roll and a lower feed roll or coating roll (3) to coat one or both sides of the object W
In the above, the upper feed roll (2) or coating roll and the lower feed roll or coating roll (3) are supported by different frames (6, 18), and the upper feed roll (2) or coating roll is Frame (6) and / or frame (18) of lower feed roll or paint roll (3)
(6,18) The present invention provides a roll coater (1) which is slidable in the directions in which they are separated from each other. Further, the upper feed roll
(2) Or the coating roll and the lower feed roll or 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 coating roll
The endless chain (53) or the endless belt that transmits rotation to and from the (3) side has slack, and the endless chain (53) or endless belt has a tension sprocket.
It is desirable that the tension is applied by (57) or the tension pulley.

[0006]

[Operation] The frame (6) supporting the upper feed roll (2) or the coating roll (6) and / or the frame (18) supporting the lower feed roll or the coating roll (3) is slid to move the frame (6 , 18) Separate each other. The upper feed roll (2) or paint roll is then removed from the upper side of the lower feed roll or paint roll (3) and the upper feed roll (2) or paint roll is removed from the frame (6) without being removed. The feed roll or paint roll (3) can be removed from the frame (18).

When the upper feed roll (2) or coating roll and the lower feed roll or coating roll (3) are synchronously rotated in opposite directions by a single drive source (35), The endless chain (53) or the endless belt that transmits rotation between the upper feed roll (2) or the coating roll side and the lower feed roll or the coating roll (3) side is provided with slack, and the endless chain ( 53) Or 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 the and are separated, the endless chain (53) or the endless belt can be made to follow.

[0008]

EXAMPLE The present invention will be described with reference to an example 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 attached to the upper ends of a pair of left and right fixed frames (6) erected on the base (5) via an elevating base (24). Lifting frame (19)
It is supported by bearings (7). As shown in FIG. 2, a pair of left and right worm gears (21) are installed in the fixed frame (6), and a rotary rod (23) having a handle (22) is attached and supported at one end thereof. Under the gear (27) of the worm gear (21), the unillustrated male screw rod (25) is attached to the support plate (26).
It is screwed onto the screw block (26A) to be mounted on. The rotation of the handle (22) raises and lowers the lift base (24), and the lift base (24) has lower ends of a pair of front and rear rods (28, 28) suspended from the lift frame (19). Are connected.

Reference numeral (29) is an air cylinder fixed in the fixed frame (6), and the rod (30) of the air cylinder (29) is connected to the lower surface of the lifting frame (19).
Further, brackets (32) to which a rack (31) is attached are vertically provided at one end of each of a pair of left and right lifting bases (24), and the rack (31) is transferred to a fixed frame (6, 6). The gears (34) at both ends of the supported rotating rod (33) are in mesh with each other.

As shown in FIG. 4, the shaft (3A) of the coating roll (3) has a pair of left and right rails (15, 15) laid on the base (5).
15) On the upper ends of the pair of left and right sliding frames (18, 18) standing on the sliding base (17) slidably mounted on the grips (16, 16). The shaft (4A) of the doctor roll (4) is supported by an attached bearing (20), and the shaft (4A) of the doctor roll (4) is arranged at the upper end of the sliding frame (18) as a pair of left and right slides. Sliding bearings (11) slidably supported between upper and lower guide rails (10, 10) of sliding bearing frames (9) slidably arranged on rails (8), respectively.
Supported by.

The sliding bearing frame (9) is the sliding frame.
By the air cylinder (12) attached to (18), reciprocating sliding is possible from the position shown in dotted line in Fig. 31 approaching the coating roll (3) to the position shown in solid line in Fig. 3 departing from the coating roll (3). The dynamic bearing (11) rotates the handle (13) forward and backward, and the screw shaft (14) is passed through a worm gear (not shown).
Can be reciprocally slid in the direction toward and away from the coating roll (3) by rotating in the normal and reverse directions.

A motor (35) with a variable speed reducer, which is a drive source of the roll coater (1), is installed on a base (5), and a sprocket (36) is attached to a rotary shaft of the motor (35) as shown in FIG. )
Is installed. Further, 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). Pressed. A roll disc sprocket (41) is attached to one end of the rotation transmission shaft (37), and a plurality of holes (42A) are provided at the other end of the rotation drive shaft (37) at predetermined intervals on the circumference.
Proximity or photoelectric sensor (44) is extended toward the disk (42) from a column (43) to which (42) is attached and which is erected on the base (5).

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) for feed roll (2), paint roll
(3) sprocket (52), one of double sprocket (45)
The main chain (53) is suspended in the
(4) sprocket (54), one of the 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 the 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 by a guide sprocket (60) attached to the fixed frame (6). Guided. A hook rod (61) is rotatably attached to the middle portion of the arm (56),
The tension sprocket (57) is pulled through the chain (59) by the weight of the weight (58). And Figure 1
In the normal state shown in Figure 5, the hook (62) of the hook rod (61) is slid on the frame while tension is applied to the main chain (53).
The arm (56) by engaging the engaging rod (63) of (18)
Fixing the sliding frame (18) and the fixed frame (6)
Connect and fix.

In the normal state, the handle (22) is rotated in the forward and reverse directions to raise and lower the feed roll (2) through the raising and lowering base (24), the rods (28, 28) and the raising and lowering frame (19) to move the plate. Feed roll in consideration of the thickness of the coating object W and the coating amount of paint
Adjust the space between (2) and the coating roll (3). The spacing can be checked by the gauge (64) on the handle (22). At this time, the left and right elevating frames (19) ascend and descend in synchronization, but the gears on both ends of the left and right racks (31) and the rotating rod (33)
The left and right elevating frames (19) can be smoothly moved up and down synchronously by the (34). Further, rotate the handle (13) forward and backward to slide the doctor roll (4) in the direction of the coating roll (3) or the opposite direction through 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 coating amount of the paint.

After preparing the 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 the arrows in FIG. A paint is supplied between the coating roll (3) and the doctor roll (4), and the feed roll (2) and the coating roll (3)
A plate-shaped object W to be coated is sent between the two and the surface of the object W to be coated (lower surface) is coated. Between the feed roll (2) and the paint roll (3) or the paint roll during the above painting process
When a foreign substance 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 springs
A slip occurs between (40, 40) and the speed difference between the rotation transmission sprocket (39) and the rotation transmission shaft (37) due to the slip is detected by the number of rotations of the marker disc (42). The indicator disc (42)
The rotation speed of is detected by, for example, the proximity sensor (44).

The rotary sprocket (39) and the rotary transmission shaft (3
When it is detected by the rotation speed of the marker disc (42) that the speed difference between 7) is generated, the air cylinder (12, 29) is operated by the control unit (not shown), and as shown in FIG. 19) to raise the feed roll (2) to increase the distance between the feed roll (2) and the coating roll (3), and further through the sliding bearing frame (9) to the doctor roll.
Slide (4) away from the coating roll (3) to increase the distance between the coating roll (3) and the doctor roll (4), and at the same time stop the motor (35) and roll (2, 3, 4) Prevent foreign matter H such as hands from being caught between them.

When replacing the coating roll (3), see FIG.
The weight (58) is placed on the base (64) as shown in Fig. 6, and the hook (62) of the hook rod (61) is disengaged from the engaging rod (63). The tension exerted by the tension sprocket (57) on the sprocket (57) is removed, the main chain (53) is slackened, and the main chain (53) is sprocket (52) of the coating 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 removing it from the fixed frame (6). Feed roll like this
With (2) removed from the upper side of 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 also be a coating roll, the doctor roll may be adjacent to the side of the upper coating roll, and the upper and lower surfaces of the plate-shaped object to be coated may be coated, or the upper roll may be a coating roll. The doctor roll may be adjacent to the side of the roll, and the lower coating roll may be used as a feed roll to coat only the upper surface of the plate-shaped object to be coated on one side. 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 coating 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. Further, 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 the upper roll, the lower roll, and the doctor roll may be driven by different driving sources. A pulley and a belt may be used to transmit the rotation.

FIG. 8 shows still another embodiment. The embodiment relates to a double-sided coating roll coater (71) in which doctor rolls (74A, 74B) are adjacent to the upper and lower coating rolls (72, 73), and the roll coater (71)
When the screw block (77) is slid along the slide rail (78) in order to mesh with the screw shaft (76) by rotating the handle (75), it is attached to the side of the female screw block (77). The tension sprocket (79) also moves to loosen the main chain (80), and the main chain (80) is moved to the upper and lower coating rolls.
Remove from the sprocket (81,82) of (72,73), and hook (8) for fixing the fixed frame (83) and sliding frame (84) together.
5) is removed from the engaging pin (86), and the sliding frame (84) is slid to separate from the fixed frame (83). The dotted line (8
7A, 87B) are sliding bearing frames for doctor rolls (74A, 74B).

[0022]

According to the present invention, when the lower feed roll or the coating roll is replaced as described above, it is not necessary to remove the upper feed roll or the coating roll from the frame. Therefore, the lower feed roll or the coating roll is replaced. The work is greatly saved.

[Brief description of drawings]

1 to 7 show an 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.

[Figure 3] Doctor roll mounting structure explanatory diagram

[Fig. 4] Illustration of the sliding frame installation structure

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

FIG. 6 is an explanatory diagram of a state where the 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 mode.

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 frames 53,80 Main chain (endless chain) 57,79 Tension sprockets W coating object

Claims (2)

(57) [Claims] 1. An upper feed roll or coating roll and a lower feed roll or coating roll, wherein the upper feed roll or coating roll and / or the lower feed roll or coating roll is a doctor roll. Adjacent,
The paint is supplied between the upper feed roll or coating roll and the doctor roll and / or between the lower feed roll or coating roll and the doctor roll, and the upper feed roll or coating roll and the lower feed roll or coating are supplied. In a roll coater for feeding a plate-shaped object to be coated between a roll and one or both sides of the object to be coated, an upper feed roll or coating roll and a lower feed roll or coating roll are separated from each other. A roll coater which is supported by a frame and is capable of sliding the frame of the upper feed roll or the coating roll and / or the frame of the lower feed roll or the coating roll in a direction in which the frames are separated from each other. 2. The upper feed roll or coating roll and the lower feed roll or coating roll are synchronously rotated in opposite directions by one drive source, and the upper feed roll or coating roll side and The endless chain or endless belt that transmits rotation between the lower feed roll or coating roll has slack, and tension is applied to the endless chain or endless belt by a tension sprocket or tension pulley. The roll coater according to claim 1.