JP2604984B2 - Painting equipment - Google Patents

Description

DETAILED DESCRIPTION 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. More specifically, the present invention relates to a coating apparatus for coating a base material surface with a different kind of paint. The present invention relates to a coating apparatus for forming a pattern such as a band, a streak, and stripes on the entire surface.

[0002]

2. Description of the Related Art Conventionally, a coating apparatus for continuously forming a pattern such as a band, a streak, and a streak on a long base material using two kinds of coating materials is disclosed in Japanese Patent Publication No. 64-106. There is a device, namely the device shown in FIGS. This device completely seals the opening of the coating groove b with the base material a, and
In addition to supplying paints of different colors to the coating groove b, the base material a is continuously moved in the direction of the arrow in a stage before being completely stirred inside the coating groove b (in a state where the base material is not completely mixed but half mixed). By moving, a stripe pattern is formed on the surface of the substrate a.

[0003]

However, in the above apparatus, the base material a forms a closed motion wall which closes the opening of the coating groove b, so that the width W of the coating groove b is smaller than the width Wa of the base material a.
b must be narrow (Wa> Wb), and the uncoated surface c (△
T) was formed, and there was a disadvantage that the entire surface of the substrate a could not be coated. Therefore, rework such as slitting the uncoated surface c is required in a later step, and disadvantages such as an increase in equipment and cost occur.

[0004]

According to the present invention, in order to eliminate such disadvantages, the width of the coating groove is made wider than that of the base material to make the opening movement, and at the same time, water-absorbing elastic bodies are arranged at both ends of the coating groove. The lower end of the base material passes underneath, so that the entire surface of the base material can be painted at once, eliminating the need for post-processing such as slitting, reducing costs and saving equipment. In addition, the present invention proposes a coating apparatus in which the pressure of the paint filled in the paint groove is reduced by an elastic body, and the paint does not leak outside from an end portion.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a coating apparatus α according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view schematically showing a coating apparatus α according to the present invention, FIG. 2 (a) is a cross-sectional view thereof, and FIG. 2 (b) is an enlarged view, showing a substrate β, a support roll C, a coating head D, And a cleaning device E.

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

As shown in FIG. 2, the support roll C is rotated in the direction of the arrow, adheres to the back surface of the substrate β, and moves the substrate β to the next step (drying, baking, cutting, etc.). The tension is applied to the material β, and the substrate β is stably moved so as not to meander or bend during the conveyance.

As shown in FIGS. 1 and 2, the coating head D is fixedly installed at an arbitrary position on the outer circumference of a circle where the substrate β and the support roll C are in contact with each other. A pattern is painted on the entire surface.

As shown in FIG. 3 (a), the shape of the dice 1 is a substantially square prism, the head 2 is formed by cutting one side of the dice 1 with a diameter substantially equal to the diameter of the support roll C, A thin coating groove 3 having a semicircular cross section is formed at substantially the center of the coating groove 2 and elastic members 4 are interposed at both ends of the coating groove 3. Further, a first pipe 5 is connected to the back of the central portion of the coating groove 3, and a second pipe 6 is connected in the middle of the first pipe 5.

[0010] Further, as a mechanism for forming a pattern,
As shown in FIGS. 1 and 2B, when the paint A is supplied from the first pipe 5 and the paint B of a different color is supplied from the second pipe 6, the paints A and B are filled in the paint groove 3. And then begin to rotate, forming a semi-kneaded state (a state where they are not completely mixed but half-mixed), and the base material β moves there, whereby continuous bands, streaks, and stripes are formed on the surface of the base material β. A pattern in the shape of a letter is formed. Paints A and B to be supplied
Is made of one or more of acrylic, urethane, epoxy, polyester, fluororesin, etc., each having at least a different color, and of course, having different paint properties. Further, one of the paints A and B may be supplied as only various pigments such as ink.

The width of the band, streak, and stripe pattern is determined by the first pipe 5 depending on the stage at which the paints A and B gradually mix.
Are the widest, and become narrower toward the end of the coating groove 3. The width, spacing, etc. of the bands, streaks, and stripes change depending on the amount ratio of the paints A and B to be supplied, and the amount ratio can be arbitrarily selected. As shown in FIG. 2 (b), the head 2 of the coating head D is installed with a distance (clearance) of Δt from the base material β, and this Δt becomes the layer thickness of the pattern. It is.

Further, as shown in FIG. 3 (b), the elastic body 4 is a short one having a sectional shape substantially the same as that of the coating groove 3. It is arranged or fixed separately via an adhesive or intervening. Further, the elastic body 4 has water permeability,
For example, it is made of various synthetic resin foams, foamed rubbers, etc., which are communicated and foamed.

The elastic body 4 has a function of impregnating the paint filled in the coating groove 3 and applying the paint to the end portion of the base material β, and also provides resistance to the flow of the paint flowing out.
Coating from the end of the example substrate β is intended to prevent the leaking out.

Further, assuming that the total width of the base material β is W1 and the total width of the coating groove 3 is W2, the relationship of W1 <W2 is satisfied, as shown in FIG. While passing, a pattern is formed on the entire surface of the base material β at a time without forming an uncoated surface, and the elastic body 4 reduces the pressure of the coating material in the coating groove 3 to reduce the pressure from the end of the base material β. This prevents the paint from leaking to the outside. Note that the protruding portion Δp of the elastic body 4 protruding from the base material β is about 0.1 to 30 mm,
It is preferably about 2 mm.

In FIG. 2, the width W3 of the elastic body 4 is 3 (W3 = 3).
~ 30mm (preferably 15mm), the length of the elastic body 4,
That is, the length of the coating groove 3 is about 3 to 30 mm (preferably 10 mm).

In FIG. 2A, reference numeral 7 indicated by a dotted line denotes a valve, which is provided as needed to adjust the filling amount when filling the coatings A and B into the coating groove 3.
Specifically, it comprises a rotary air valve or the like. Further, the first pipe is connected to the third pipe or more (not shown).
Can be applied to perform coating in which three or more different paints are mixed.

The cleaning device E is provided as necessary, and as shown in FIG. 2B, the support roll C and the substrate β
Is to be installed at any place where it does not touch,
When the paint runs out from the paint groove 3 and the elastic body 4 of the paint head D and adheres to the support roll C, the excess paint is washed. Specifically, it is constituted by a cleaning roll 8, a pallet 9, and a doctor 10. The cleaning roll 8 has a surface made of a material having excellent permeability, such as a fibrous material, a synthetic resin foam, and rubber, and is in contact with the support roll C and rotates corresponding to the support roll, and
This is to infiltrate the solvent 10a filled in the pallet 9 and wash excess paint adhered to the support roll C.

The doctor 10 removes excess paint and the solvent 10a that have finally adhered to the support roll C,
Is to remove all the deposits on the surface of. The solvent 10a is arbitrarily selected depending on the properties of the paints A and B, such as water and thinner. 1 and 2, arrows indicate the direction of travel of the substrate β, the direction of rotation of each roll, and the direction in which the paints A and B flow.

FIG. 4 is an explanatory view showing an arrangement of a series of apparatuses when the apparatus is incorporated in the continuous line of the coating apparatus α. The uncoiler F, the tension roll group G, the coating apparatus α, the baking furnace H, the cooling apparatus I, the tension It is composed of a roll group J and a recoiler K. In the drawing, arrows indicate the moving direction of the substrate β and the rotating direction of each device.

The uncoiler F is for storing the base material β in a coil shape, and transports the base material β together with the pinch roller 11 to the next step.

Next, the tension roll groups G and J are formed so as to sandwich a coating device C, a baking furnace D, and a cooling device E, which will be described later, and apply a tensile force (tension) to the base material β. Things. The configuration is such that a plurality of drive rollers 12 are arranged in a crank shape. It is more effective if the rotation speed of the tension roll group G is slightly slower than the rotation speed of the tension roller group J.

The coating device α is installed by using the drive roll 12 of the tension roller G as a support roll C as it is.

Next, the baking furnace H is for baking and drying the ink and the paint, and the inside thereof is in a heated atmosphere using the heat of combustion of gas in the closed space. It is divided into three parts, a printing part 14 and a slow cooling part 15, and shows a mountain-like temperature distribution. That is, the drying unit 13 is at room temperature to about 100 degrees Celsius, and the baking unit 14 is at about 1 degree Celsius.
00 degrees to 300 degrees, slow cooling part 15 is about 300 degrees to 20 degrees Celsius
It shows a temperature distribution of about 0 degrees.

Further, there is no free roller or conveyor for supporting the base material β between the baking furnace H and a cooling device I to be described later. , Efficiently and stably. For this reason, since the base material β bends to some extent downward due to its own weight, the sensor 16 is disposed on the ground directly below a portion that becomes the top of this deflection, and the distance Δl between the ground and the top of the base β is monitored. , So that the base material β is not placed on the ground.

The cooling device I includes a substrate β coming out of the baking furnace H.
Is cooled to room temperature, and comprises a closed space. Inside, a water injector 17 and a blower device 18
Are installed in order on the front surface and the back surface of the base material β, and the base material β
In addition, water is sprayed from a water injector 17 to cool to room temperature, and compressed air is blown from a blower device 18 to remove water droplets attached to the base material β. A pallet for repairing water is installed on the ground of the cooling device I. This pallet is connected to a water tank / chiller device via a pipe, and has a circulation structure in which the pallet is guided again to the water injection device 17. is there. The blower device 18 is connected to a compression device such as a compressor.

In the recoiler K, the coated base material β guided by the pinch roller 19 is again stocked in a coil shape. In the drawing, reference numeral 20 denotes a free roller.
As a support device for the base material β, a plurality of devices are arbitrarily installed at respective locations other than the baking furnace H and the cooling device I.

[0027]

Other Embodiments The above is an embodiment of the coating apparatus α according to the present invention. The coating apparatus α using the coating head D shown in FIG. 5 and FIG. A coating device α using the elastic body 4 shown in the drawing, or a coating device α as shown in FIGS. 9 and 10 can be used.

FIG. 5A shows an example of a coating head D in which a plurality of first pipes 4 and second pipes 5 are connected to a coating groove 3 at an arbitrary pitch, and is particularly effective when the base material β is wide. It is something. FIG. 5B is an example of a coating head D in which the edge of the surface of the head 2 in the exit direction of the base material β is inclined to form the edge 21, and the film thickness of the coating material applied to the base material β is kept constant. This is effective when making adjustments.

FIG. 6 (a) shows a coating groove 3 extending to both ends of the head 2 and, as shown in FIG. 6 (b), an adjusting rod 22 having the same cross section as that of the coating groove 3 having an elastic body 4 attached to the tip end. This is an example of a coating head D that can be moved in the direction of the arrow by inserting it into both ends of the coating groove 3 and is particularly effective in arbitrarily changing the width to be coated in response to a change in the width of the base material β. It is something.

FIG. 7 (a) and FIG. 7 (b), which is a sectional view taken along the line II, show another example of the elastic body 4, in which a hole 23 is formed.
Is formed. The hole 23 is provided so as to have an opening inside the coating groove 3.
This is to improve the water infiltration performance. Similarly, FIG.
FIG. 8B shows an example in which a plurality of small holes 23 are formed, and FIG. 8B shows an example in which a plurality of small holes 23 are formed. FIG.
(C) is an example in which the elastic body 4 is formed longer.

FIG. 9A shows an example of a coating apparatus α in which a coating head D is installed above a support roll C. FIG. 9B shows an example in which an extension bar 24 is installed above the support roll C, It is effective for habituation of the paint film on the painted surface formed on the surface of β to make the film thickness constant.

FIGS. 10 (a) and 10 (b) show the case where a spreading roll 25 is provided behind the coating head D. The coating film on the coating surface formed on the surface of the base material β is used to adjust the film thickness. It is effective when making it constant. Note that FIG.
In FIG. 10A, the extension roll 25 rotates in the same direction as the traveling direction of the base material β, but in FIG. 10B, it rotates in the reverse direction, which is effective for forming a complicated pattern and improving the design. Things. Of course, these configurations can be arbitrarily selected to provide the coating apparatus α combined with each other.

As described above, according to the coating apparatus of the present invention, since the conventional drawbacks are solved and the width of the coating groove is made wider than that of the base material to perform the opening motion, the coating is performed on the entire surface of the base material at one time. In addition to the above, the coating apparatus does not require any post-processing such as slitting, and can reduce costs and equipment. In addition, the elastic body resists the flow of paint flowing out.
By applying , paint leaks from the end part to the outside
There is no. There are effects and features such as.

[Brief description of the drawings]

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

FIG. 2 is an explanatory view showing a typical example of a coating apparatus according to the present invention.

FIG. 3 is an explanatory view showing an example of a coating head constituting the coating apparatus.

FIG. 4 is an explanatory view showing an arrangement when a coating apparatus is incorporated in a line.

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

FIG. 6 is an explanatory view showing another example of the coating head constituting the coating apparatus.

FIG. 7 is an explanatory view showing another example of the elastic body constituting the coating apparatus.

FIG. 8 is an explanatory view showing another example of the elastic body constituting the coating apparatus.

FIG. 9 is an explanatory view showing another example of the coating head constituting the coating apparatus.

FIG. 10 is an explanatory view showing another example of the coating head constituting the coating apparatus.

FIG. 11 is an explanatory view showing a conventional coating apparatus.

FIG. 12 is an explanatory view showing a conventional coating apparatus.

[Explanation of symbols]

 A Paint B Paint C Support roll D Painting head E Cleaning device F Uncoiler G Tension roll group H Baking furnace I Cooling device J Tension roller group K Recoiler α Coating device β Substrate 1 Dice 2 Head 3 Painting groove 4 Elastic body 5 First Pipe 6 Second pipe 7 Valve 8 Washing roll 9 Pallet 10 Doctor 11 Pinch roller 12 Drive roller 13 Drying unit 14 Baking unit 15 Slow cooling unit 16 Sensor 17 Water injector 18 Blower device 19 Pinch roller 20 Free roller

Claims (1)

(57) [Claims] 1. A coating apparatus for forming a pattern on the surface of a continuous long thin plate-like substrate, wherein the coating device has a substantially semicircular cross section which is wider than the width of the substrate and is installed so as to cross the surface of the substrate. A coating groove, an elastic body having water immersion disposed at both ends of the coating groove, further comprising a plurality of pipes connected in the coating groove, each different type of paint from the pipe continuously from the pipe. A coating apparatus, wherein a coating material is supplied in a coating groove and the coating is continuously performed by moving the substrate in a longitudinal direction such that both side edges in the width direction of the base material pass under the elastic body.