JP2000061373A - Coating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coating device which can arbitrarily form a diversified striped pattern on the surface of a substrate by an easy adjustment arbitrarily form a meandering or broken striped pattern thereon, and form a clear pattern thereon. SOLUTION: A coating device is constituted of a transfer roller E being installed so as to cross the surface of a substrate βwhile coming into contact with it and transferring a coating material a coating material placing roller D arranged beside the transfer roller E a main coating material feeder F applying a main coating material to the surface of coating material placing roller D, a sub-coating material discharging device G in which a plurality of pipes, having a flow rate adjustment valve, to discharge a sub-coating material so as to cross the upper side of at least one of the coating material placing roller D on which the main coating material has been applied, the transfer roller E, and the base material β are aligned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating apparatus for continuously forming a pattern on the surface of a base material such as a long thin metal plate or a plastic film, and more specifically, it relates to a coating apparatus of different types. Bands, streaks on the entire surface of the substrate,
The present invention relates to a coating device that can be efficiently and inexpensively changed while arbitrarily changing patterns such as stripes.

[0002]

2. Description of the Related Art Conventionally, a coating apparatus for continuously forming patterns such as bands, stripes, and stripes on a long base material by using two kinds of coating materials has been described in Japanese Patent Publication No. 64-106. There is a device, that is, the device shown in FIGS. This device completely seals the opening of the coating groove b with the base material a, and
Paints of different kinds of colors are supplied to the coating groove b, and the base material a is continuously moved in the arrow direction at a stage before complete stirring inside the coating groove b (a state where the coating material is not completely mixed but half mixed). By moving it, a striped pattern is formed on the surface of the base material a.

[0003]

A striped pattern is formed on the base material a by the above-mentioned coating apparatus. In order to change the striped pattern, the mixing ratio of the coating material X and the coating material Y and the coating material are used. X, there is no other method than adjusting the amount of the solvent contained in the paint Y and the moving speed of the base material a, and it is difficult to reproduce the same pattern because it is easily affected by temperature. There were few patterns that could be changed.
Further, since the paint X and the paint Y were mixed in a semi-kneaded form, it was not possible to form a pattern with a clear contour.

[0004]

According to the present invention, in order to eliminate such a defect, as described in the first invention of claim 1, a pattern is formed on the surface of a continuous long thin plate-shaped substrate. In a coating device that forms, a transfer roll that is installed so that it crosses the surface of the base material while touching it, transfers the paint to the base material, a coating roll that is juxtaposed with the transfer roll, and the main coating material is applied to the surface of the coating roll. A main paint supply device that applies the main paint and a plurality of pipes that discharge the sub paint so as to traverse at least one of the coating roll, the transfer roll, and the base material in a state where the main paint is applied on the surface However, the pipe proposes a coating device including a sub-paint discharge device, each of which is provided with a valve whose flow rate can be adjusted.

Further, as described in the second aspect of the present invention, in a coating apparatus for forming a pattern on the surface of a continuous long thin plate-shaped base material, the surface of the base material may be crossed while being in contact with it. And a transfer roll that transfers the paint to the base material,
A main paint supply device that applies the main paint to the surface of the transfer roll, a transfer roll that has the main paint applied to the surface, and a plurality of sub-paints that discharge the sub paint so as to traverse at least one of the base materials above. The present invention proposes a coating device including pipes arranged in a row, each pipe being provided with an auxiliary paint discharge device provided with a valve whose flow rate can be adjusted.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A coating apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the outline of a coating apparatus α according to the first aspect of the present invention, and FIG.
(C) is a partially enlarged view thereof, A and B are different kinds of paints, C is a support roll, D is a coating roll, and E
Is a transfer roll, F is a coating head, which is the main paint supply device,
G is an auxiliary paint discharge device, and β is a base material. The small arrow indicates the rotation direction of each roll, the middle arrow indicates the moving direction of the base material β, and the large arrow indicates the moving direction of the auxiliary coating material discharge device G.

The base material β is a long continuous thin metal plate,
It is made of plastic film and has an arbitrary width and a thickness of about 0.2 to 1.5 mm.
It is an object to be coated with a pattern on the surface.

The support roll C rotates in the direction of the arrow as shown in FIG. 1 and comes into close contact with the back surface of the base material β to move the base material β to the next step (drying, baking, cutting, etc.). A tension is applied to β to stably move the base material β so that it does not meander or bend during conveyance.

The coating roll D has a width substantially equal to that of the transfer roll E. In FIG.
It shows a configuration in which different types of coating materials A and B supplied from the auxiliary coating material discharge device G are applied to the surface and the coating materials A and B are transferred to a transfer roll E. In this case, the coating material A is applied over the entire surface of the coating material coating roll D having a width substantially equal to the base material β, and then the coating material B is applied on the coating material A in an arbitrary pattern. The material of the surface of the coating roll D may be selected from metal, synthetic resin, rubber, etc., but a rubber roll having elasticity and easy adhesion of the coating is preferable.

The transfer roll E is installed so as to be in contact with and cross the surface of the base material β, and is juxtaposed with the coating roll D.
Further, it is installed so as to face the support roll C via the base material β, and rotates at the same speed as the moving speed of the base material β in the arrow direction, or at a different speed, or in the direction opposite to the arrow direction. . The pattern formed on the surface of the coating roll D by the coating head F is transferred to the transfer roll E and further transferred to the surface of the base material β.
By changing the interval ΔT between the coating roll D and the transfer roll E, or changing the rotational speeds of the coating roll D and the transfer roll E, or by changing them at will, It is also possible to change the pattern by the coating materials A and B that appear. The material of the surface of the transfer roll E may be selected from metal, synthetic resin, rubber, etc., but a rubber roll to which the paint easily adheres is preferable. The interval ΔT is about 0 to 2.0 μ, preferably about 0.15 to 0.50 μ, and can be arbitrarily changed as described above.

FIG. 1 shows an example in which the coating head F is used to place the coating material A on the coating material roll D. For example, a coating head having the structure shown in FIG. 2A is used. . That is, the coating head F includes a die 1 having a substantially rectangular prism shape,
Head 2 facing coating roll D on one side of die 1
And a thin coating groove 3 having a semicircular cross section in the substantially central portion of the head 2.
Is formed. Further, a tongue piece 2a is provided at the upper end portion of the head 2 so that the film thickness of the paint A can be adjusted and the paint A can be cut well. Further, in the die 1, a pipe 4 for supplying the paint A to the coating groove 3 is connected via a connection pipe 5. As shown in FIG. 2C, the distance between the head 2 and the surface of the coating material roll D is Δs at the shortest, and Δs = 0.01 to 2.0 μ,
It is preferably about 0.15 to 0.50 μ, and it is preferable that it can be arbitrarily adjusted.

In order to place the coating material B on the coating material roll D, for example, an auxiliary coating material discharge device G having a structure as shown in FIG. 2B is used, 11 is a die, 12 is a head, Reference numeral 13 is a pipe, 14 is a supply pipe, and 15 is a valve. That is, the auxiliary coating material discharge device G discharges the auxiliary coating material B so as to traverse at least one of the coating material coating roll D, the transfer roll E, and the base material β in a state where the main coating material is applied to the surface above. A plurality of pipes 13 are arranged in a row, and each pipe 13 has a valve 15 capable of adjusting the flow rate.
An example is shown above.

The auxiliary coating material discharge device G is a die 1 having a substantially rectangular prism shape.
1 and a head 12 facing the coating roll D on one side of the die 11. Further, in the die 11, a supply pipe 14 for supplying the paint B to the head 12 is connected to a pipe 13, and a valve 15 which can be opened and closed is provided at the tip or in the middle of each supply pipe 14. ing. As shown in FIG. 2C, the tip of the head 12 or the pipe 13 and the surface of the coating material roll D on which the coating material A is not mounted are Δt.
And have a relationship of Δs ≦ Δt.

In the auxiliary paint discharging device G, each valve 15 provided in the pipe 13 can be independently adjusted, and the pipe 1
The flow rate of the paint B can be increased / decreased or stopped for every 3 items, and the auxiliary paint discharger G can be arranged in a direction perpendicular to the traveling direction of the base material β as shown by the large arrow in FIG. The thickness of the striped pattern of the base material β is adjusted, discontinued, or curved to form a striped pattern rich in variation by allowing it to move freely. Becomes extremely easy. Although not shown, the auxiliary paint discharging device G may be in a state in which the pipe 13, the supply pipe 14, the valve 15 and the like are exposed without having the die 11, the head 12 and the like, and the paint from the tip of the pipe 13 may be used. B
Can also be discharged in the form of a spray.

Immediately after the coating material A is applied to the surface of the coating material roll D and before it is almost dried, the coating material B is applied to the surface of the coating material B and then the coating material B
By applying the above, it becomes possible to form a unique pattern in which the coating materials A and B are appropriately mixed on the base material β. The paints A and B to be supplied are made of one or more of acrylic type, urethane type, epoxy type, polyester type, fluororesin type and the like, and at least the respective colors are different. May be different. Further, either one of the paints A and B may be supplied only as various pigments such as ink. It is also possible to mix a solvent that promotes mixing of the paints A and B by the rotation of the paints A and B, or both, and as the types of solvents, alcohols, ketones, esters, One or more of glycol ethers, ethers, and hydrocarbons. Depending on the type and amount of solvent mixed in paints A and B,
It is also possible to change the texture of the pattern transferred to the base material β.

As a mechanism for forming a pattern on the surface of the coating roll D, the coating head F causes the coating A supplied from the pipe 4 to reach the coating groove 3 via the connecting pipe 5, and the coating roll D is fixed. By rotating in the direction of the arrow, the coating material A in the coating groove 3 is applied to the mounting coating material roll D in a constant thickness. Next, the paint B supplied from the supply pipe 14 of the auxiliary paint discharge device G is applied from the head 12 through each pipe 13 onto the paint A applied to the surface of the coating roll D. At this time, the auxiliary coating material discharge device G is repeatedly moved in the width direction of the base material β, and the valves 15 are arbitrarily opened and closed to detour the surface of the base material β by the coating material B or break. It is possible to form a striped pattern.

FIG. 3 is an explanatory view showing the arrangement of a series of devices when the coating device α is incorporated in a continuous line,
It is composed of an uncoiler H, a tension roll group I, a coating device α, a baking furnace J, a cooling device K, a tension roll group L, and a recoiler M.

The uncoiler H is for stocking the base material β in a coil shape, and for transporting the base material β to the next step together with the pinch roller 21.

The tension roll groups I and L are formed so as to sandwich a coating device α, a baking furnace J, and a cooling device K, which will be described later, and apply a tensile force to the base material β. As its configuration, a plurality of drive rollers 22 are arranged in a crank shape, and it is still effective to make the rotation speed of the tension roll group I slightly slower than the rotation speed of the tension roll group L.

The coating apparatus α uses the drive roller 22 of the tension roll group I as the support roll C as it is and installs it.

Next, the baking oven J is for baking and drying ink and paint, and the inside is in a closed space in a warm atmosphere utilizing the heat of combustion of gas, etc. It is divided into three parts, a baking part 24 and a slow cooling part 25, and shows a mountain-shaped temperature distribution. That is, the drying unit 23 is from room temperature to about 100 degrees Celsius, and the baking unit 24 is about 1 degree Celsius.
00 ° C to 300 ° C, the slow cooling unit 25 is about 300 ° C to 50 ° C.
It shows the temperature distribution of degrees.

Further, there is no free roller or conveyor for supporting the base material β between the baking furnace J and the cooling device K described later, and the obstacles of heat transfer are eliminated in the baking / drying and cooling process. , Which is efficient and stable. For this reason, the base material β flexes downward to some extent due to its own weight. Therefore, the sensor 26 is disposed on the ground surface directly below the apex of the deflection, and the distance Δl between the ground surface and the apex of the base material β is monitored. The base material β is adjusted so as not to be installed on the ground.

The cooling device K is for cooling the base material β discharged from the baking furnace J to room temperature, and is composed of a closed space. Inside the water injector 27 and blower device 2
8 are sequentially installed on the front surface and the back surface of the base material β, and water is sprayed from the water injector 27 to the base material β to cool it to room temperature, and compressed air is sprayed from the blower device 28 to the base material β. It removes water droplets attached to β. A pallet for collecting water is installed on the ground of the cooling device K, and this pallet is connected to a water tank / chiller device through a pipe and has a circulation structure that leads to the water injector 27 again. is there. The blower device 28 is connected to a compression device such as a compressor.

The recoiler M is for stocking the coated base material β, which is guided by the pinch roller 29, again into a coil shape. In the figure, 30 is a free roller,
As a supporting device for the base material β, a plurality of devices are arbitrarily installed at each place other than the baking furnace J and the cooling device K.

FIG. 4 shows a coating apparatus α according to the second aspect of the present invention.
FIG. 9 is a perspective view showing an outline of the above, in which different kinds of paints A and B supplied from a paint head F and a sub-paint discharge device G are attached to the surface, and the paints A and B are transferred to a base material β. Is shown. The transfer roll E is installed so as to cross the surface of the base material β, and is installed so as to face the support roll C via the base material β, and is the same as the moving speed of the base material β in the arrow direction. , Or at a different speed, or in the direction opposite to the arrow direction. In addition, dimensional relationship,
The configurations of the coating head F, the auxiliary coating material discharge device G, etc. are the same as those of the first invention shown in FIG. Further, although not shown, the auxiliary paint discharging device G can be arranged on the base material β.

[0026]

Other Embodiments The above is one embodiment of the coating apparatus α according to the present invention, and the transfer apparatus α having the structure described below can be formed.

In FIG. 5, the secondary coating material discharge device G is attached to the transfer roll E.
It is an example arranged above. Transfer the secondary paint discharge device G to the transfer roll E.
By arranging it above, the coating head F can be placed on the coating roll A.
The solvent contained in the paint A applied to the surface passes through the coating roll D and a part of the transfer roll E, so that the paint B is applied from above the paint A in a state in which the solvent contained in the paint A has appropriately evaporated. Therefore, the paint B hardly penetrates into the paint A. Therefore, as compared with the case where the auxiliary coating material discharge device G is arranged on the transfer roll D, a clear striped pattern can be formed on the surface of the base material β, and the coating material A adheres to the auxiliary coating material discharge device G. Can be prevented.

In FIG. 6, the secondary coating material discharge device G is attached to the transfer roll E.
This is an example of arranging on the base material β after the transfer process by.
By disposing the auxiliary coating material discharge device G at a position as shown in FIG. 6, the solvent contained in the coating material A applied by the coating head F to the surface of the coating material roll A is transferred to the coating material roll D, the transfer roll E, and the base material β. By passing through a part of the surface of the paint A, the paint B is applied from above the paint A in a state where the solvent contained in the paint A is appropriately evaporated, and the paint B hardly penetrates into the paint A. Therefore, a sharper stripe pattern can be formed on the surface of the base material β as compared with the case where the configuration shown in FIG. 5 is adopted, and the paint A can be prevented from adhering to the auxiliary paint discharging device G. it can.

FIG. 7 shows an example in which a pallet F'is used in place of the auxiliary paint discharging device G shown in FIG.
This is an example in which the mechanism of (3) is simplified and the type of paint A is easily exchanged by simply exchanging the pallet F '.

FIGS. 8A, 8B, and 9 show an example in which the sub-paint discharge device N is configured by combining heads N ₁ and N ₂ which are independent of each other. The heads N ₁ and N ₂ are shown in FIG.
Can be moved separately as shown in (b),
It is effective for forming a pattern of various patterns on the surface of the base material β. In this case, either _{one of} the heads N ₁ and N ₂ may be fixed and only the other may be moved. Further, different kinds of coating materials may be supplied to the heads N ₁ and N _{2 so} that the surface of the base material β is It can also be applied. Although not shown, the coating head N can be formed by combining three or more types of heads.

Further, as shown in FIGS. 10 (a) and 10 (b), a die 31 having a substantially rectangular prism shape, a head 32 on one side of the die 31 facing the coating roll D, and a substantially central portion of the head 32. It is also possible to use a coating head F in which a thin coating groove 33 having a semicircular cross section is formed. In this case, a tongue piece 32a is provided at the lower end of the head 32, a mixing chamber 34 is provided in the die 31 so as to be parallel to the coating groove 33, and the paint A is supplied to the back of the mixing chamber 34. The first pipe 35 is connected, and the second pipe 36 is provided in the middle of the first pipe 35.
Are connected. Further, the coating groove 33 and the mixing chamber 34 are connected by a plurality of connection pipes 37, and a valve 38 that can be opened and closed is provided in the middle of each connection pipe 37.

As a mechanism for forming a pattern on the surface of the coating material roll D, as shown in FIG.
When paint A is supplied from the second pipe 36 and paints A ′ of different colors are supplied from the second pipe 36, the paints A and A ′ are mixed in the mixing chamber 3
4 starts to rotate as it is filled, and becomes a semi-kneaded state (a state where the mixture is not completely mixed but half), moves in the connection pipe 37, is further rotated in the coating yard, and is placed there. By moving the surface of the transfer roller E, a continuous band, stripe, or stripe pattern is formed on the surface of the transfer roll E. A new pattern can be formed on the pattern formed by the coating head F by the secondary coating material discharge device G, and a blurry stripe and a clear stripe can be formed on the surface of the base material β so as to form a variety of patterns. Pattern can be formed.

Further, FIG. 12A shows an example in which elastic bodies 41 are arranged at both left and right ends of the coating groove 3 of the coating head F. The elastic body 41 has a water-immersive property, and is arranged in a range corresponding to both widthwise edges of the base material β to prevent the paint from leaking to the left and right outside of the coating groove 3. 12B shows that the coating groove 3 is extended to the vicinity of both ends of the head 2 and
This is an example of a coating head F in which an adjusting rod 42 having an elastic body 41 attached to its tip as shown in (c) is inserted into both ends of the coating groove 3 and is movable in the direction of the arrow. This is effective when the width to be painted is arbitrarily changed in the arrow direction in response to the change of.

Further, as shown in FIG. 13, the cleaning device O can be disposed adjacent to the coating roll D and the transfer roll E as required. That is, after the coating material A (including the coating material B depending on the position of the auxiliary coating material supply device G) is transferred to the transfer roll E in the coating material roll D, the coating material A (depending on the position of the auxiliary coating material supply device G is transferred to the transfer roll E. Is paint B
(Including also) is transferred to the base material β, surplus paint and paint that could not be transferred remain on the surfaces of the coating roll D and the transfer roll E, which are mainly washed and also after the transfer. The entire surface of the transfer roll E is cleanly washed so as not to affect the formation of a new pattern.

More specifically, the cleaning device O is composed of a cleaning roll 51, a pallet 52, and a doctor 53. The cleaning roll 51 has a surface made of a material having excellent permeability such as a fibrous material, a synthetic resin material, rubber, etc., is in contact with the transfer roll E, rotates corresponding to the transfer roll E, and is placed in the pallet 52. Filled solvent 54
And the excess paint adhered to the transfer roll E is washed.

The doctor 53 scrapes off the excess paint and the solvent 54 finally attached to the transfer roll E to remove all the deposits on the surface of the transfer roll E. Also, the solvent 5
No. 4 is arbitrarily selected, for example, water or thinner depending on the properties of the paints A and B and the solvent mixed with the paints A and B.

FIG. 14 shows an example in which the support roll C'is arranged and the path of the base material β is changed.

Although not shown, the sub-coating ejecting device G or the sub-painting ejecting device N is arranged at least at two or more locations among the coating roll D, the transfer roll E, and the base material β after the transfer process of the coating A. However, it is also possible to form a variety of patterns on the substrate β.

Although the modification of the first invention has been described above, the same configuration can be adopted for the second invention, of course. In addition, the present invention can be used in any combination of the above-described configurations.

[0040]

As described above, according to the coating apparatus of the present invention, a striped pattern rich in change can be obtained by simple adjustment.
It can be arbitrarily formed on the surface of the base material. A striped pattern that is curved or discontinuous can be arbitrarily formed on the surface of the base material. A clear pattern can be formed on the surface of the substrate. There are characteristics and effects.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an example of a coating apparatus according to the present invention.

FIG. 2 is a partial explanatory view of a coating device according to the present invention.

FIG. 3 is an explanatory diagram showing an arrangement when the coating device is incorporated in a line.

FIG. 4 is an explanatory view showing an example of a coating apparatus according to the present invention.

FIG. 5 is an explanatory view showing another example of the coating head that constitutes the coating apparatus.

FIG. 6 is an explanatory diagram showing another example of the coating head that constitutes the coating apparatus.

FIG. 7 is an explanatory diagram showing another example of the coating head that constitutes the coating apparatus.

FIG. 8 is an explanatory diagram of another example of the configuration of the coating device.

FIG. 9 is an explanatory diagram of another example of the configuration of the coating device.

FIG. 10 is an explanatory diagram showing another example of the coating head that constitutes the coating apparatus.

FIG. 11 is an explanatory diagram showing another example of the coating head that constitutes the coating apparatus.

FIG. 12 is an explanatory diagram showing another example of the coating head that constitutes the coating apparatus.

FIG. 13 is an explanatory diagram of another example of the configuration of the coating device.

FIG. 14 is an explanatory diagram of another example of the configuration of the coating device.

FIG. 15 is an explanatory diagram showing a conventional example of a coating device.

FIG. 16 is an explanatory diagram showing a conventional example of a coating device.

[Explanation of symbols]

a base material b coating groove A coating material A ′ coating material B coating material C supporting roll D mounting coating roll E transfer roll F coating head F ′ pallet G auxiliary coating material discharge device H uncoiler I tension roll group J baking oven K cooling device L tension roll group M Recoiler N Coating head N ₁ head N ₂ head O Cleaning device X Paint Y Paint α Coating device β Base material 1 Dice 2 Head 2a Tongue piece 3 Coating groove 4 Pipe 5 Connection pipe 11 Dice 12 Head 13 Pipe 14 Supply pipe 15 Valve 21 Pinch Roller 22 Drive Roller 23 Drying Part 24 Baking Part 25 Slow Cooling Part 26 Sensor 27 Water Injector 28 Blower Device 29 Pinch Roller 30 Free Roller 31 Dice 32 Head 33 Coating Groove 34 Mixing Chamber 35 First Pipe 36 Second Pipe 37 Connection pipe 38 Valve 41 Elastic body 42 Adjustment rod 51 Cleaning roll 52 Pare Door 53 Doctor 54 solvent

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takahiro Hoshikawa             1816 Kaminawame, Kanizawa, Higashine, Yamagata Prefecture             12 Inside the IG Technical Research Institute F-term (reference) 4F040 AA22 AA24 AB04 AC01 AC09                       BA23 CB21 DA12

Claims (2)

[Claims] 1. A transfer device for forming a pattern on the surface of a continuous long thin plate-shaped base material, and a transfer roll installed so as to traverse the surface of the base material while contacting the surface of the base material. At least one of a coating roll that is juxtaposed with the transfer roll, a main coating supply device that applies a main coating to the surface of the coating roll, and a coating roll, a transfer roll, and a base material in which the main coating is applied to the surface. A plurality of pipes for discharging the sub paint are arranged in a row so as to traverse one upward, and each pipe is composed of a sub paint discharging device equipped with a valve whose flow rate can be adjusted. Coating equipment. 2. A coating device for forming a pattern on the surface of a continuous long thin plate-shaped base material, and a transfer roll installed so as to cross the surface of the base material while contacting it, and transferring the coating material to the base material. A main paint supply device for applying the main paint to the surface of the transfer roll, a plurality of transfer rolls in a state where the main paint is applied to the surface, and a plurality of sub-paints for discharging at least one of the base materials upward Of the above-mentioned pipes, each of which is composed of an auxiliary paint discharge device provided with a valve whose flow rate can be adjusted.