JPH08257477A - Device and method for changing roll of roll-coater type coating equipment - Google Patents

Abstract

PURPOSE: To efficiently change a coating roll in a short time without damaging the roll by imparting a chock structure to a coater roll and providing a coating unit, a self-traveling coater truck, a roll transporting truck having a roll conveyor and a roll tote box or a roll placing device. CONSTITUTION: When the roll of a coating roller 11 is changed, a coater truck 21 is moved to a roll changing position, a coating roll chock presser 15 is released, then a roll changing device 31 is moved along a rail 21, a mechanism 34 for lifting the roll changing device is lowered to a position where a chock 14 is grasped, and the chock 14 is grasped and raised. The lifting mechanism is moved along the rail 32, and the roll is transiently placed on a stand outside a tote box. The roll changing device is traveled to the position of a fresh roll in the tote box to grasp the fresh roll and traveled to a coating unit in the opposite direction to the case of the spent roll, and the fresh roll is incorporated into the coating unit. The fresh rolls are successively changed with the spent rolls.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll-changing apparatus and a roll-changing method for a belt-shaped coating facility, particularly a roll coater type coating facility.

[0002]

2. Description of the Related Art In recent years, various kinds of coated strips have been manufactured in accordance with the tendency of producing a large variety of products in small quantities. At present, most of the strips are painted by the roll coater method, and the strips that are running are painted continuously. In order to handle various types of painting, it is necessary to change painting during painting work, and the painting equipment must be able to change painting quickly.

[0003] Conventionally, as a plan to cope with rapid coating change of a coating apparatus, it has been widely practiced to arrange a plurality of coating units on the front surface and the back surface, respectively, and use them sequentially as shown in FIG. 7, for example.

However, the coating roll of the roll coater type coating device is often damaged by the end of the belt-shaped body when coating the belt-shaped body which is the body to be coated, especially the metal belt.
The roll scratches may cause streaks in the coating film, or the coating film may not be uniform. Also, when the coating roll is a rubber roll, the roll swells depending on the paint, and if the swelling exceeds a certain limit, it will not be usable, or depending on the type of paint to be replaced, the used paint contained in the roll It mixes with the paint to be painted next and causes paint failure. In addition, scratches may occur due to the deposits on the strip. Therefore, it is necessary to change the coating rolls regularly or irregularly, and especially in the case of high-mix low-volume production, the rolls must be changed frequently.

On the other hand, when the coating is changed, the coating unit such as the coating roll must be washed, and it is necessary to finish the roll exchange in a short time in addition to the washing. In addition, the rolls to be replaced need to be protected from damage during shipping. However, the conventional roll coater type coating apparatus does not have any special means for changing the roll including the coating roll.

[0006]

In the above construction, when the coating rolls are replaced regularly or irregularly, the work efficiency of the roll replacement is poor, and when the coating roll is defective, the coating line is changed. In some cases, it had to be stopped for a long time, which hindered the coating of the strips and required a lot of man-hours for roll replacement. In particular, when simultaneously changing rolls in the front and back coating units, it takes a lot of time because of the limited number of people, and the coating line is often stopped for a long time. In addition, when the roll to be exchanged was carried in, the roll surface was often scratched, and there were many troubles that proved to be unusable at the start of use.

The present invention has been made in order to solve such a problem, and makes it possible to efficiently change the coating rolls in a short time and also to automate the stable roll exchange. It is an object of the present invention to provide a roll exchanging device and a roll exchanging method in a coating equipment for a strip-shaped body.

[0008]

The present invention advantageously solves the problems of the prior art, and as a result of the inventors' originality and ingenuity in order to achieve the above-mentioned objects, the result is that in a short time. The coating roll can be exchanged efficiently and without damaging the roll, and the roll exchange can be automated. The gist of the invention is that (1) it has a coater roll. In a roll exchanging device for one or more coating units, a coater roll is provided with a chock structure, and a driving device is a clutch unit that has a forward / backward movement mechanism having a positioning function and intersects a traveling belt-like body. Self-propelled coater trolley having a positioning function of traveling in any direction, and a traveling direction and a height direction locator that travels in a direction intersecting the moving direction of the coater trolley A roll coater type characterized by arranging a self-propelled roll transporting device having a function and a roll transporting carriage or a roll placing device having a roll box containing a roll placing table within the moving range of the roll transporting device. Roll changer for painting equipment. (2) A roll transporter or a roll placing device is provided with a roll passing box made up of N roll placing stands and one roll placing stand, and the roll exchange of the roll coater type coating equipment according to (1) above. apparatus. (3) Using the roll exchanging device of the roll coater type coating facility according to (1) or (2) above, first, a used roll is transferred from the coating unit to a roll stand outside the roll container,
After that, new rolls are sequentially transferred from the roll stand inside the roll container to the coating unit, the used rolls are alternately conveyed from the coating unit to the roll stand inside the roll container, and finally the rolls on the roll plate outside the roll container are rolled. A roll replacement method in a coating facility, which is characterized in that the roll is replaced with a roll stand in a container box. It is in.

[0009]

The present invention will be described below in detail with reference to the drawings.
FIG. 1 is an overall image of coating equipment including a roll exchanging device of the present invention. The coating equipment has a two-layer structure. The surface coating unit 2a, the backup roll 3a, the roll exchanging device 31a, and the roll carrier 51a are arranged in the lower layer, and the surface coating unit 2b and the backup roll 3b are arranged in the upper layer. , Lift roll 4, back coating unit 2
c, 2d, roll changing device 31b, and roll carrier 5
1b is arranged. The roll exchanging device 31b and the roll carrier 51b are shared by the three upper coating units.

FIG. 2 is a schematic view showing a method of stopping the roll exchange position of the three roll coater. The coater roll is a coating roll 11, a pickup roll 12, and a doctor roll 1.
It consists of three. At the time of painting, the painting roll 11,
The predetermined coating material is transferred to the belt-shaped body 1 which is the object to be coated by controlling the number of rotations of the pickup roll 12 and the doctor roll 13 and the nip pressure or the gap between them, but each roll is generally a forward / backward moving mechanism. As a stepping motor is often used as. Now, when coating is completed and rolls are replaced, this stepping motor is driven to move each roll, and the reverse limit 6
1, 62, 63, and the roll is always stopped at a fixed position (roll exchange position).

FIG. 3 is a schematic view showing the coupling of the coating roll with the drive unit. The coating roll 11 includes a roll rotation drive device 41, a universal joint 42, and a clutch 4.
3, the clutch 43 is connected by the clutch attachment / detachment device 44 during coating, and the roll rotation drive device 41 is connected.
Although the driving force of the clutch 43 is transmitted to the coating roll 11, the clutch attaching / detaching device 44 is used when the roll is replaced.
And the coating roll 11 and the roll rotation drive device 41 are separated. The other rolls may have the same structure if necessary.

FIG. 4 is a schematic view showing the relationship between the roll changing device and the coating unit. The coating unit moves along the coater truck rail 22 from the line side in a direction intersecting the traveling direction of the strip body 1 (not shown) on the coater truck 21 and moves away from the strip body 1. A coater carriage fixing stopper 23 is arranged at the tip of the coater carriage rail 22,
After the coater carriage 21 hits this and stops, the coater carriage clamp device 24 presses the coater carriage 21 against the coater carriage fixed stopper 23 and always stops at a fixed position (roll exchange position). At this time, the coating roll roll chock holding device 15 is released.

The roll exchanging device 31 moves along the roll exchanging device rail 32 installed in the direction intersecting the coater carriage rail 22 above the roll exchanging position. A roll carrier or a roll placing device (not shown) is placed within the traveling range of the roll exchanging device 31.

FIG. 5 is a schematic view showing the attachment / detachment of the coating roll of the roll exchanging device. The roll exchanging device has a roll exchanging device chuck structure 33 for gripping the coating roll roll chock 14 at both ends of a roll exchanging device elevating mechanism 34 having a positioning function. Since a large number of exchange rolls are targeted, the roll exchange device centering mechanism 35 is provided to complement the production precision of each roll, the stop precision of each roll, the coater carriage stop precision, and the roll exchange device positioning precision.

FIG. 6 is a schematic diagram showing the relationship between the roll carrier and the roll case. A roll box 71 is mounted on the roll carrier. Inside the roll case 71, roll stands 81a to 81c are installed. A roll stand 82 is installed outside the roll case 71. The roll passing box 71 is carried in together with the new roll from the outside of the system (outside of the coating equipment), and after the roll replacement, is carried out of the system (outside of the painting equipment) together with the used roll. When the number of rolls to be replaced at the same time is 3, usually, 3 roll stands in the roll box 71 and 1 roll stand outside the roll box 71 are carried in and out of the roll system (coating equipment). It is efficient.
Further, when the number of rolls to be exchanged at the same time is two, the number of roll stands in the roll case 71 is two, and the number of roll stands outside the roll case 71 is one.

Now, the roll exchange of the coating roll 11 will be described. First, after the coater cart 21 is moved to the roll exchange position and the coating roll roll chock holding device 15 is released, the roll exchange device 31 moves along the roll exchange device rail 32 directly above the coating roll 11 to use the positioning function. Meanwhile, the roll changer lifting mechanism 34 descends to a position where the coating roll roll chuck 14 can be gripped, and while using the centering mechanism 35 of the roll changer chuck structure 33, the coating roll roll chuck 14 is gripped and raised. After that, after lifting to a height that does not interfere with other equipment, it moves along the roll device rail 32 to a position right above the roll stand 82 outside the pass box 71 of the roll carrier or the roll stand, and reverses the above operation to perform the coating roll 11 Is temporarily placed on the roll placing table 82 outside the box 71 of the roll transporting vehicle or the roll placing device. Next, it once rises, travels just above the position of the new roll in the roll container 71, descends again, grabs the new roll, follows the reverse course of the used roll, conveys it to the coating unit, and paints the coating unit. Built in. Thereafter, the new rolls are sequentially conveyed alternately from the roll stand in the roll passing box 71 to the coating unit, and from the used roll coating unit to the roll stand in the roll passing box 71, and finally, the roll stand 82 outside the roll passing box 71. The used roll temporarily placed on the roll holder is replaced with an empty place on the roll stand of the roll container box 71. In this way, all the rolls in the roll case are used.

After that, the used roll is carried out together with the roll passing box to the outside of the system (outside of the coating equipment), and instead, the new roll is carried together with the roll passing case from outside of the system (outside of the coating equipment). It Since the roll body is not directly handled when it is transported into or out of the system, the roll is not damaged. Further, it is possible to carry out only the used rolls and carry in only the new rolls into the roll case, which makes the roll carry-in / out work extremely efficient.

These series of operations may be performed manually or automatically. Further, the roll is not limited to the coating roll, and other rolls are possible. It should be noted that any coater that uses a roll can be used regardless of its type.

[0019]

According to the exchanging device and exchanging method of the present invention described above, the coating roll can be efficiently moved and the roll can be scratched, including the loading and unloading of the roll into and out of the system (coating equipment) in a short time. It is possible to replace the rolls without them, and it is also possible to automate the roll replacement.
Especially when changing rolls simultaneously on the front and back coating units,
Human restrictions are completely eliminated, and great results can be obtained.

[Brief description of drawings]

FIG. 1 is an overall image of a continuous coating facility including a roll changing device of the present invention.

FIG. 2 is a schematic view showing a method of stopping a roll exchange position of a three roll coater of the present invention.

FIG. 3 is a schematic view showing the coupling of the coating roll of the present invention with a driving device.

FIG. 4 is a schematic diagram showing the relationship between the roll changing device of the present invention and a coating unit.

FIG. 5 is a schematic view showing the attachment / detachment of the coating roll of the roll exchanging device of the present invention.

FIG. 6 is a schematic view showing a relationship between a roll carrier and a roll case of the present invention.

FIG. 7 is an overall image of a conventional coating facility.

[Explanation of symbols]

 1 band 2a surface coating unit 2b surface coating unit 2c back coating unit 2d back coating unit 3a backup roll 3b backup roll 4 lift roll 11 coating roll 12 pickup roll 13 doctor roll 14 coating roll roll chock 15 coating roll roll chocks holding device 21 coater truck 22 Coater trolley rail 23 Coater trolley fixed stopper 24 Coater trolley clamp device 31 Roll changing device 31a Roll changing device 31b Roll changing device 32 Roll changing device rail 33 Roll changing device chuck structure 34 Roll changing device Lifting mechanism 35 Roll changing device Centering mechanism 41 Roll Rotational drive device 42 Universal joint 43 Clutch 44 Clutch attachment / detachment device 51a Roll transport cart 51b Roll transport cart 61 Paint roll retract limit 62 Pickup roll retract limit 63 Doctor roll retract limit 71 Roll pass box 81a-c Roll pass box roll stand 82 Roll pass box outer roll stand

Claims (3)

[Claims] 1. A roll exchanging device for one or more coating units having coater rolls, wherein the coater rolls are provided with a chock structure, and a drive unit is a clutch unit that has a forward / backward movement mechanism having a positioning function. A self-propelled coater cart having a positioning function of traveling in a direction intersecting with a running belt, and a self-propelled coater having a positioning function in a traveling direction and a height direction of traveling in a direction intersecting a moving direction of the coater truck. Roll transport device,
A roll exchanging device for a roll coater type coating facility, characterized in that a roll conveying carriage having a roll box containing a roll placing table or a roll placing device is arranged within the moving range of the roll conveying device. 2. A roll carrier or a roll placing device is provided with N.
2. A roll changer for a roll coater type coating facility according to claim 1, wherein a roll box comprising one roll stand and one roll stand are provided. 3. A roll coater-type coating equipment roll exchanging device according to claim 1 is used to transport a used roll from a coating unit to a roll stand outside a roll container, and then a new roll is sequentially rolled. Alternately transport the used rolls from the roll stand inside the container box to the coating unit and the used rolls from the coating unit to the roll stand inside the roll container box, and finally transfer the rolls on the roll table outside the roll container box to the roll table inside the roll container box. A method for exchanging rolls in coating equipment, characterized in that