JPH0645020B2 - Work coating equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention includes a paint tilting tool capable of tilting a thin-film paint flowing down from a paint supply tool toward the upstream side and the downstream side in the conveying direction of a work. TECHNICAL FIELD The present invention relates to a work coating device capable of reducing the coating material adhering to the front surface of a workpiece.

[Background technology]

Building materials, for example, gypsum board, plywood, etc., used as face materials for building panels that form walls, floors, ceilings, etc., of dry-construction buildings, such as wall cloth and wallpaper on the interior surface. And other finishing materials are attached using glue. Therefore, in order to enhance the adhesive strength of the glue, the surface of the glue is left as it is, and a so-called waterproof paint is applied to the back surface to prevent moisture,
It is highly waterproof. Conventionally, when the above-mentioned coating material is applied, as shown in FIG. 4, the coating material is made to flow in a thin film form from a slit B having a constant width, and a work W is moved by a conveyor C at a constant speed thereunder, so-called curtain. Although the flow coater A is used, in the conventional curtain flow coater A, since the thin film-like paint D flows vertically down, the front surface E of the thin film-like paint D contacts the front surface E as the work W advances. A large amount adheres and flows down on the conveyor C. Therefore, the transport conveyor C is polluted and the surface of the work W following is polluted by the paint. Further, in the portion where the paint adheres and is soiled, there have been problems such as the adhesive strength of the above-mentioned glue being lowered, and the peeling of the finishing material.

[Object of the Invention]

The present invention is based on the provision of a paint sloping tool capable of spraying air on a thin film-like paint and inclining it toward the upstream side and the downstream side in the conveying direction of the work, and reduces the paint adhering to the front surface of the work. It is an object of the present invention to provide a work coating device that can solve the above problems.

[Disclosure of Invention]

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

In the figure, the work coating apparatus 1 includes a paint supply tool 6 provided with a slit 5 capable of flowing a thin film-like paint 4 toward the gap 3 in a gap 3 of a conveyer conveyor 2 and an air in the thin film-like paint 4. And a paint tilting tool 7 that can tilt the paint 4 toward the upstream side and the downstream side in the transport direction.

In this example, the transport conveyor 2 includes drive rollers 14, 14, 15, 1 between side plates 12, 13 finished on both side edges of a bottom plate 11.
5, a belt conveyor in which a belt 16 is wound between the driving rollers 14 and 14 and a belt 17 is wound between the driving rollers 15 and 15. Further, the gap 3 is formed between the belts 16 and 17. Further, in the transport conveyor 2, the rectangular plate-like work W made of gypsum board is used in this example from the belt 16 on the upstream side to the belt 1 on the downstream side.
7 can be transferred across the gap 3 and the work W can be conveyed at a constant speed. A paint supply tool 6 and a paint tilt tool 7 are arranged in the gap 3.

The paint sloping tool 6 is provided with a slit 5 at the bottom of a base 21 capable of storing paint, which intersects the carrying direction of the carrying conveyor 2 at a right angle.

The base 21 has a horizontally long box shape in which a front plate 24, a back plate 25, and side plates 26, 26 are arranged between an upper plate 22 and a lower plate 23, and the paint can be stored therein. Further, the base portion 21 crosses the conveying direction of the conveyer conveyor 2 at a right angle, and its both end portions are supported by columns 29, 29 rising from the side plates 12, 13 of the conveyer conveyor 2. Further, at the bottom of the base portion 21, in the present example, the paint stored in the base portion 21 can be flown in a thin film shape across the conveyance direction of the conveyance conveyor 2 at a right angle in the central portion of the lower plate 23. The slit 5 is formed.
The bottom surface of the base 21 is inclined toward the slit 5. Further, the slit 5 includes a rectifying portion 33 including hanging pieces 31 and 32 hanging from the upstream side and the downstream side in the conveying direction, and an inclined portion 34 including an inclined piece inclined from the lower end of the hanging piece 31 toward the conveying direction. And are provided.

Below the paint supply tool 6, a receiving tool 3 for receiving the paint that flows down.
6 is bridged between the side plates 12 and 13 of the transport conveyor 2, and a paint circulating tool 37 is provided between the receiving tool 36 and the paint supplying tool 6. The paint circulating tool 37 is the receiving tool 36.
A circulation pump 42 is attached to a paint tank 40 to which a return pipe 39 extending from the paint tank 40 is connected. The circulation pump 42 is operated by the output of a detector (not shown) that detects the liquid level height of the paint in the base 21, and keeps the height constant.

The paint sloping tool 7 has a blow-out portion 4 having a blow-out port 43 for blowing air to the thin-film paint 4 from the upstream side in the conveying direction.
5, a blow-out portion 55 having a blow-out port 54 for blowing air to the paint 4 from the downstream side in the conveying direction, and a blow-out portion 45,
An air pump 44, which is connected to 55 and supplies air to the blow-out portions 45 and 55, is provided. The blow-out portion 45 has a tubular shape and has attachment pieces 46, 46 at both ends thereof fixed to the upstream side of the columns 29, 29. Further, on the front surface of the blow-out portion 45, there is provided a blow-out port 43 which opens toward the thin film paint 4 and crosses the conveying direction of the conveyer conveyor 2 at a right angle. Part 47
To form. Further, the air supply pipe 51 communicating with the inside of the blowout portion 45
Is connected to the air pump 44 via the switching valve 52, and the other port of the switching valve 52 is provided with a blowout portion 54 for blowing air to the thin film paint 4 in the direction opposite to the conveying direction. Connected by 53. Moreover, the switching valve 52
Is arranged on the upstream side and the downstream side of the paint supply tool 6 and is a work W.
It is operated by a control unit 59 to which detectors 56 and 57 for detecting

Further, the control unit 59 switches the switching valve 52 when the detector 56 on the upstream side detects the work W, and sends the air to the blowing unit 45. Further, when the detector 57 on the downstream side detects the work W as the work W is conveyed, the switching valve 52 is switched, and the delivery to the blowing portion 45 is stopped. Further work W
And the detector 56 detects the passage of the work W, the switching valve 52 is switched and the air is sent to the blowing portion 55. Further, when the detector 57 detects the passage of the work W, the delivery to the blowing portion 55 is stopped.

[Action]

Therefore, the transport conveyor 2 can transport the work W, and the work W can be transferred across the gap 3.

The paint supply tool 6 can store the paint inside the base 21, and the slit 5 can flow the paint stored in the base 21 toward the gap 3 in a thin film form.

Further, the rectifying portion 33 of the slit 5 can make the thickness of the thin film-shaped coating material 4 uniform, and the inclined portion 34 pretilts the thin film-shaped coating material 4 toward the downstream side in the transport direction.

Further, the paint inclining device 7 can incline the thin film-like paint 4 toward the downstream side in the conveying direction by the air blown out by the blow-out portion 45, so that the paint adhering to the front surface E of the work W can be reduced. it can.

As shown in FIG. 3, the paint tilting tool 7 can tilt the thin film-shaped paint 4 toward the upstream side in the conveying direction by the blowing portion 55, and can reduce the paint attached to the rear surface F of the work W. Therefore, it is possible to reduce the amount of paint flowing down from the front surface E and the rear surface F of the work W to the belt 17 on the downstream side of the transport conveyor 2, and prevent the belt 17 from being soiled.

In the work coating apparatus 1 of the present invention, the conveyor belt may be replaced with a belt conveyor and a roller conveyor or the like may be used. The outlets 43 of the outlets 45 and 55,
54, the work coating apparatus of the present invention can be modified into various forms, such that the air blown from the outlets 43, 54 is directed obliquely downward so that the air flows along the thin film-shaped coating material 4 substantially in parallel.

〔The invention's effect〕

As described above, the work coating apparatus according to the present invention comprises a paint supply tool provided with a slit in the gap of the transport conveyor, the slit crossing the transport direction of the transport conveyor at a right angle and allowing the thin film paint to flow down toward the gap. Since the thin film-like paint is provided with a paint tilting tool capable of tilting the paint toward the upstream side and the downstream side in the conveying direction by blowing air,
As a result of reducing the amount of paint adhering to the front surface and rear surface of the work, it is possible to prevent the paint from flowing down onto the transfer conveyor, prevent the transfer conveyor from being soiled, and prevent the paint from adhering to the lower surface of the subsequent work. Therefore, it is possible to prevent peeling of a finishing material such as wallpaper, which is caused by coating a work which is a surface material using a conventional curtain flow coater. In addition, since the slanted portion for preliminarily inclining the thin film-like paint flowing down from the slit toward the downstream side in the transport direction is provided at the lower end of the slit, the paint can be more reliably and stably transferred to the downstream side in the transport direction. It can be tilted toward the front, further reducing the adhesion of paint on the front surface of the work.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIGS. 2 to 3 are sectional views showing the operation thereof, and FIG. 4 is a diagram showing a conventional curtain flow coater. 2 ... Conveyor, 3 ... Gap, 4 ... Thin film paint, 5 ... Slit, 6 ... Paint supply tool, 7 ... Paint tilting tool, 34 ... Inclined part, W ...
work.

Claims (1)

[Claims] 1. A slit capable of storing paint in the gap of a conveyer conveyor having a gap through which a work can be transferred, traversing the conveyer conveyor at the bottom at a right angle to the conveying direction, and allowing a thin film-like paint to flow down toward the gap. And a paint sloping tool for spraying air onto the thin film-like paint to incline the paint toward the upstream side and the downstream side in the conveying direction, and the lower end of the slit. Further, a work coating device is provided with an inclined portion for preliminarily inclining the thin film paint flowing down from the slit toward the downstream side in the transport direction.