JPH0719574Y2 - Coating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a coating apparatus for applying a coating liquid to a bottle or the like.

[Conventional technology]

In general, bottles and the like are scratched when they are packed in a box or transported, because the bottles come into contact with each other. Therefore, for the purpose of repairing the scratches thus generated or preventing the scratches from occurring, a coating is applied to the scratched portion or the portion where the scratches are likely to occur. In this method, the coating liquid is supplied to a sponge portion of a coating belt that applies the coating liquid to a bottle or the like, and the sponge portion is passed through a squeezing roller for the purpose of squeezing the excess coating liquid. Here, since the squeezing work is performed by the squeezing rollers having the same diameter, the sponge portion is uniformly squeezed over the whole.

However, depending on the shape of the bottle, a narrow deep scratch and a wide shallow scratch may occur simultaneously in one bottle.
In such a case, a large amount of coating liquid must be applied to the deep scratch. However, if the whole is uniformly squeezed as described above, it is not possible to apply a sufficient coating liquid to deep scratches.

For this reason, there is a system in which the coating belt is divided into upper and lower parts and the coating liquid is applied only to the portion where scratches occur.

[Problems to be solved by the device]

However, if the coating belt is divided into upper and lower parts, the expansion and contraction rates of the respective belts are different, so that it is very troublesome to use. Further, there is a problem that sufficient coating cannot be performed because a gap is generated during operation.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a coating device having a squeezing roller capable of adjusting the penetration of the coating liquid into the sponge portion according to the shape of the bottle. And

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a coating apparatus for transporting a container while rotating the container and applying a coating liquid to the container by bringing the coating belt into contact with the outer surface of the container. A liquid-containing material portion impregnated with the coating liquid is attached, and a plurality of cuts are formed in the liquid-containing material portion at arbitrary intervals in the width direction and extending in the transport direction of the container. A squeezing roller for squeezing is arranged so as to press the liquid-containing material portion, and each of the squeezing rollers has a width substantially equal to the interval between the cuts formed in the liquid-containing material portion and has a diameter of It is characterized in that a plurality of different rollers are concentrically formed and combined so that the diameters of adjacent rollers do not become the same.

[Action]

The coating liquid is impregnated into the liquid-containing material portion attached to the outer surface of the coating belt that applies the coating liquid to the bottle or the like. After that, the liquid-containing material portion passes between a plurality of rollers having different diameters, so that the coating liquid is squeezed differently depending on the diameter. Further, by providing the notch in the liquid-containing material portion, it is not affected by each step portion.

〔Example〕

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

FIG. 1 is a perspective view showing the outline of a coating apparatus according to the present invention. In the figure, reference numeral 1 is a conveyor that conveys the bottle 2 to the coating device 3. On the side of the conveyor 1, a coating belt 4 is stretched around two coating belt pulleys 5a and 5b which are arranged apart from each other in the transport direction of the bottle 2. On the outer surface of the coating belt 4, from the top, the first-stage sponge portion 6a, the second-stage sponge portion 6b, the third-stage sponge portion 6c,
The sponge portion 6 including the fourth-stage sponge portion 6d is attached. Here, between the first-stage sponge portion 6a and the second-stage sponge portion 6b, the second-stage sponge portion 6b and the third-stage sponge portion 6c, and the third-stage sponge portion 6c and the fourth-stage sponge portion 6d. , A first notch 6e, a second notch 6f, and a third notch 6g, respectively. These notches 6e, 6f, 6g are coating belts 4
In addition to ensuring the liquid distribution inside the sponge parts 6a, 6
Boundary surfaces of b, 6c, and 6d are formed, are not affected by adjacent parts, and even if there is a thick liquid state in the upper stage, the coating liquid does not drop due to gravity. On the downstream side of the coating belt 4 in the transport direction, a suction belt 7 is stretched around two suction belt pulleys 8a and 8b which are arranged apart from each other in the transport direction of the bin 2. On the other hand, a wiping belt 9 is provided on the opposite side of the conveyor 1 opposite to the coating belt 4 and the suction belt 7, and is stretched over two wiping belt pulleys 10a and 10b which are arranged apart from each other in the transport direction of the bin 2. ing. Further, the bin rotary belts 11a and 11b are provided above and below the wiping belt 9 respectively, and the bin rotary belt pulley 12 is provided.
It is stretched over a and 12b. Here, the bin rotation belt pulley 12a on the upstream side of the bin rotation belt 11 is arranged on the upstream side of the conveyor 1 with respect to the application belt pulley 5a on the upstream side of the application belt 4, and is conveyed on the conveyor 1. Rubin 2
Is first brought into contact with the coating belt 4 in a state where preliminary rotation is imparted by the bin rotation belt 11. On the other hand, a squeeze roller 13 and a squeeze assist roller 14 are provided between a coating liquid supply nozzle (not shown) provided above the coating belt 4 and the coating belt pulley 5a (FIG. 2). At this time, the coating belt 4 is interposed in the gap between the squeezing roller 13 and the squeezing auxiliary roller 14, and the gap is set to be smaller than the thickness of the coating belt 4. In addition, the squeezing roller
13 is a first-stage squeezing roller 13 corresponding to the sponge portion 6
a, second-stage aperture roller 13b, third-stage aperture roller 13c, fourth
The step squeezing roller 13d is formed in four steps, and the step parts have different diameters.

FIG. 3 is a perspective view showing an embodiment of the drive mechanism for the aperture roller 13. This has a long hole 16 formed at an appropriate position of the base 15 and extending in a direction orthogonal to the traveling direction of the coating belt 4. A lower end of a support shaft 17 of the squeezing roller 13 penetrates the elongated hole 16. At the lower end of this support shaft 17, the elongated hole
A positioning bolt 18 provided in parallel with 16 is in contact with the positioning bolt 18, and the positioning roller 18 positions the aperture roller 13. In addition, a fixed lever is attached to the lower end of the support shaft 17.
19 is provided to fix the support shaft 17. Further, the squeeze assist roller 14 is provided at a position facing the squeeze roller 13.
Is provided. Further, a receiving tray 20 for receiving the coating liquid squeezed from the coating belt 4 is provided on the upper surface of the base 15.

In the coating apparatus 3 configured as described above, first, the positions of the wiping belt 9 and the bin rotation belt 11 are determined by adjusting the front-back adjustment handle (not shown) according to the shape of the bottle 2 to be coated. . At this time, the diameter error of the bottle 2 is absorbed by the sponge attached to the bottle rotation belt 11. Further, the positioning bolt 18 is adjusted to move the support shaft 17 along the elongated hole 16 to adjust the position of the aperture roller 13. And the fixed lever 19
Is moved toward the fixed side (arrow A in FIG. 3) to fix the position of the support shaft 17. Then, by operating the conveyor 1, the bin 2 is transported to the coating device 3.
Since the bottle 2 conveyed to the coating device 3 is brought into contact with the bottle rotating belt 11, preliminary rotation is imparted accordingly. Further, the bottle 2 polishes the sponge portion 6 of the coating belt 4 to which the coating liquid is supplied through a coating liquid supply nozzle (not shown) and the bottle 2 to which the coating liquid is attached, in the state of preliminarily rotating the bottle 2. It is conveyed to and from the wiping belt 9. At this time, the bottle 2 comes into contact with the coating belt 4 and the wiping belt 9 while preliminarily rotating, so that the rotation of the bottle 2 becomes stable. Further, since the sponge portion 6 of the coating belt 4 into which the coating liquid has penetrated passes between the squeezing roller 13 and the squeezing auxiliary roller 14, the squeezing roller 13 squeezes the coating liquid. At this time, since the sponge portion 6 in each step portion is squeezed by the squeezing roller 13 facing each step having a different diameter, the penetration state of the coating liquid in the sponge portion 6 in each step portion is different. Also, the cuts 6e, 6f, 6g provided between the stepped sponge portions 6
Therefore, the adjacent sponge portions 6 are not affected. That is, it is possible to reliably apply a large amount of the coating liquid to the deep scratches and a small amount of the coating liquid to the shallow scratches. In this way, the coating liquid is applied to the surface of the bottle 2 by the application belt 4, and the bottle 2 is polished by the wiping belt 9. After that, the excess coating liquid further applied to the surface of the bottle 2 is sucked by the suction belt 7 provided on the downstream side of the coating belt 4. During this operation, the bin 2 is constantly rotated by the bin rotation belt 11.

Here, the rotation direction and speed with respect to the conveyor 1 and each belt have the following relationship.

The speeds of the coating belt 4 and the suction belt 7 are slower than the speed of the conveyor 1, and the speed of the suction belt 7 is the same as or higher than the speed of the coating belt 4. The direction of the coating belt 4 and the suction belt 7 is the same as the direction of the conveyor 1.

Further, the speed of the wiping belt 9 is set so as not to be equal to the speed of the bin rotating belt 11, and the direction of the wiping belt 9 is opposite to that of the conveyor 1.

Furthermore, the speed of the bin rotary belt 11 is faster than the speed of the conveyor 1, and the direction is the same as the direction of the conveyor 1.

The directions of the coating belt 4, the suction belt 7, and the wiping belt 9 may be opposite to the direction of the conveyor 1. However, the application belt 4 and the suction belt 7 are set in the same direction.

Further, the material attached to the outer surface of the coating belt 4 is not limited to the sponge as in the above embodiment, and may be a liquid-containing material.

[Effect of device]

According to the present invention, as described above, the squeezing roller of the coating device is configured by concentrically combining a plurality of rollers having different diameters, so that the liquid-containing material portion of the coating belt can sufficiently penetrate the portion where the coating liquid is required. In addition, since the coating liquid can be squeezed at the place where the coating liquid is not required so much, it is possible to adjust the permeation of the coating liquid into the liquid-containing material portion without being affected by the shape of the bottle. Different coatings can be performed. Further, by providing the notch between the liquid-containing material portions of the adjacent step portions, it is possible to perform more reliable coating without being affected by the adjacent liquid-containing material portions. Play. Furthermore, the present invention is
Since the notch is formed only in the liquid-containing material portion attached to the outer surface of the coating belt, it is not necessary to divide the coating belt, and therefore the positional relationship between the portions partitioned by the notation is constant. Therefore, there is no fear that the partitioned portions of the liquid-containing material portion will come off from the corresponding coated portions of the container as the coating belt runs. In addition, the width can be easily set according to the width of the portion of the container to which the coating liquid is applied, only by making a cut in the liquid-containing material portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a coating apparatus according to the present invention, FIG. 2 is an enlarged perspective view showing a squeezing roller according to the present invention, and FIG. 3 is a perspective view showing a driving mechanism of the squeezing roller according to the present invention. Is. 2 ... bottle, 4 ... coating belt, 6 ... sponge part, 6e, 6f, 6g
… Cut, 13… squeeze roller, 14… squeeze assist roller.

Claims (1)

[Scope of utility model registration request] 1. A coating apparatus for transporting a container while rotating it and applying a coating liquid to the container by bringing the coating belt into contact with the outer surface of the container, wherein the outer surface of the coating belt is impregnated with the coating liquid. The liquid material part is attached, and the liquid material part is formed with a plurality of notches extending at an arbitrary interval in the width direction and extending in the transport direction of the container. The squeezing rollers are arranged so as to press the liquid-containing material portion, and the squeezing rollers have substantially the same width as the interval between the cuts formed in the liquid-containing material portion, and the plurality of rollers having different diameters are concentric. And a coating device which is formed by combining so that adjacent rollers do not have the same diameter.