JPH11151458A - Method of applying liquid chemical and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate liquid chemical being carried to things except an object to be coated, coating defects, and coating unevenness to contrive the uniform applying of the liquid chemical and the shortening of work time by reciprocating a lengthy brush having width larger than the length of one side of a planar body and immersed in the liquid chemical between one end side of the planar body and the opposite side thereof one or more times to apply it on the surface of the planar body. SOLUTION: An applicator 1 moves a long-length brush 3 having width larger than the length of one side of a glass plate G between the one end side of the glass plate G and the opposite side thereof along the curved surface shape of the glass plate G while it is a little moved vertically. When liquid chemical is not applied, the brush 3 is inserted and held between a pair of squeezing rolls 41, 41 to prevent the evaporation of the liquid chemical with a tip part thereof being immersed in liquid chemical of a liquid chemical tank. The brush 3 immersed in the liquid chemical tank is raised, and the liquid chemical is squeezed from the brush 3 when it is passed through a clearance between the pair of squeezing rolls 41, 41, and the brush 3 into which the suitable quantity of the liquid chemical has been soaked is reciprocated at least one time by an elevating/lowering means 30 and a horizontally moving means to uniformly apply the liquid chemical onto the upper surface side of the glass plate G. It can be applied without coating unevenness, uniformly, at high speed, and automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for applying a chemical solution to a plate-like body such as a glass plate or a resin panel,
The present invention relates to a method and an apparatus for applying a volatile chemical such as a water-repellent liquid to an automobile window glass or the like.

[0002]

2. Description of the Related Art Conventionally, when a chemical solution is applied to a plate-like body, various methods and apparatuses such as a method of applying with a spray gun, a method of applying with a brush, and a method of transferring and applying to a roll or the like. It has been known.

[0003] For example, Japanese Patent Application Laid-Open No. 7-328506 discloses a brush type coating apparatus in which a robot arm grips a brush to apply an edge of an upper surface of a plate-like object. The arm is provided with a slide device for the left and right direction, which is provided with a slider slidably guided in the left and right direction by a guide rod and urged by a spring along the guide rod. A vertical slide device is provided, which is provided with a guide cylinder that guides the slide bar so as to be slidable in the orthogonal direction and that is provided with a spring that biases the slide bar upward. A plate-like object is provided at a lower end of the slide bar. A lower surface roller which is pressed from below by the spring bias of the slide bar is attached to an edge of a lower surface of the slide bar, and the lower surface roller is attached to an upper end of the slide bar. An application material supply device that supplies an application material to a brush that contacts the edge of the upper surface while being in contact with the edge from below is attached, and the end of the upper and lower surfaces is fixed to a position fixing portion of the vertical slide device. There is disclosed a brush type coating apparatus in which an end face roller which is pressed against the end face between the edges by the spring bias of the guide rod is attached.

[0004]

In the method of spraying a chemical solution by a spray gun, a large amount of the chemical solution is scattered on the surface other than the glass surface, and the liquid solution is generated on the back surface of the glass, and the chemical solution to be applied has high volatility and viscosity. In such a case, the viscosity increases and the nozzle of the spray gun is easily clogged. Therefore, if the nozzle management is not sufficient, there is a problem that poor coating occurs.

Japanese Unexamined Patent Publication No. 7-328506 discloses a coating material such as a cleaning agent, a primer, an adhesive, etc., which is brought into contact with an edge roller along an edge of a curved window glass so as to contact the edge. When the entire glass surface is sequentially applied with a brush, the overlapping portion of the boundary between the already applied portion and the portion to be applied becomes a step or uneven application, and the entire glass plate surface is applied. However, there is a problem that coating time is required to apply the coating solution, so that the coating liquid solidifies in the brush and uneven coating cannot be avoided.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, that is, it has a relatively high solidification drying rate over a desired surface of a plate-like body such as a curved glass plate with a simple structure. Applying chemicals to the surface of a plate-like body stopped at a predetermined position on a conveyor for the purpose of automatically applying uniform, high-speed coating without causing liquid dripping, coating unevenness, even with chemicals In the method, a long brush having a width not less than the length of one side of the plate is dipped in a chemical solution, and the brush is reciprocated at least once or more between one end and the opposite side of the plate. The liquid is uniformly applied to the surface of the plate, or the brush is moved up and down along the curved surface shape of the plate while reciprocating between one end side and the opposite side of the plate, so that the surface of the plate is Apply the chemical solution evenly or open and close with the opening and closing cylinder Lower the brush in the open state and insert it between the pair of squeezing rolls, immerse the tip of the brush in the chemical solution tank, then raise the brush with the squeezing roll closed to reduce the amount of the chemical solution attached to the brush to the desired amount. After squeezing, the brush is used to apply a chemical solution to the surface of the plate-like body, or further, a wedge-shaped member is inserted from the lower end gap between the pair of squeezing rolls to open the squeezing roll. In a coating method and an apparatus for applying a chemical solution to a plate-like body surface stopped at a predetermined position on a transport conveyor, a long brush having a width equal to or longer than one side of the plate-like body, and the brush facing the opposite side A pair of openable and closable rolls for closing a pair of rolls by closing a pair of rolls, and closing the pair of rolls to shut off the drug solution attached to the brush while blocking the drug solution in the tank and the outside of the drug solution tank from outside air. Roll opening / closing means consisting of Or a lifting and lowering means for raising and lowering the brush according to the curved surface shape of the plate-like body, or a wedge-shaped member which can be raised and lowered at both lower end portions between a pair of drawing rolls as the drawing roll opening and closing means. A wedge-shaped member is inserted into the gap between the pair of squeezing rolls to open and close the squeezing rolls, or furthermore, a chemical solution provided with gap adjusting means for adjusting the closed gap between the pair of squeezing rolls. An application device is provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a shuttle conveyor 1 supports a plate-like body such as a glass plate G, and conveys a predetermined distance forward, then descends and retreats, and conveys it by pitch feed.
1, the glass plate G is conveyed. When the shuttle conveyor 11 stopped at a predetermined position of the coating apparatus 1 descends, the glass plate G is transferred onto the pair of support rods 2,2.

The chemical liquid coating apparatus 1 of the present invention has a long brush 3 having a width not less than the length of one side of the glass plate G,
Reciprocating at least once at least between the one end side and the opposite side of the glass plate G along the curved surface shape of the glass plate G, and evenly apply the chemical solution to the entire surface of the glass plate with the brush 3. Things.

A traversing means 20, which is orthogonal to the conveying direction of the glass sheet G and traverses in the horizontal direction, is fixed to a stand (not shown). The traversing means 20 rotates a ball screw (not shown) by driving a driving motor 23, and And a traversing unit 21 for traversing the traversing guide 22 screwed into the traversing unit.

The elevating unit 31 of the elevating means 30 is fixed to the traversing guide 22 so that the elevating unit 31 of the elevating means 30 is perpendicular to the traversing unit 21 of the traversing means 20 and the longitudinal direction of the elevating unit 31 is vertical.

The lifting / lowering means 30 comprises a lifting / lowering unit 31 for rotating a ball screw (not shown) by driving of a driving motor 33 to raise and lower a lifting guide 34 screwed with the ball screw. The brush 3 was suspended via a bracket 32 hanging down from the lifting guide 34. The brush 3 was attached so that its longitudinal direction was parallel to the transport direction of the glass plate G, and the bristle tip of the brush 3 was vertical.

Outside one end of the conveying means 10, there is provided a squeezing roll opening / closing means 40 for opening and closing the pair of squeezing rolls 41, 41. As shown in FIGS. 2 and 3, the squeezing roll opening / closing means 40 has hinges 53, 53,.
And a pair of movable plates 5 having substantially the same length as the squeezing roll 41
4 and 54 are movably mounted, and a pair of squeezing rolls 41 and 41 are provided in parallel on the respective upper portions of the movable plates 54 and 54.

A wedge-shaped member 43 is provided below both ends of the pair of squeezing rolls 41, 41. The wedge-shaped member 43 is attached to the tip of a rod of an opening / closing cylinder 42. It can be moved up and down freely.

Further, gap adjusting screws 51, 51, 56, 56 are provided inside and outside a pair of fixed plates 55, 55 fixed on the mounting base 6 outside the pair of movable plates 54, 54, and the inside of the pair of fixed plates 55, 55 is provided. Springs 52, 52 are provided between the gap adjusting screws 56, 56 and the movable plates 54, 54.

The gap between the squeezing rolls 41, 41 is adjusted by the outer gap adjusting screws 51, 51, and the springs 52, 52 are compressed by the inner gap adjusting screws 56, 56.
The restoring force of the squeezing rolls 41, 41 can be adjusted.

Further, a chemical solution tank 5 having an upper lid provided with a slit between the pair of movable plates 54 on the mounting base 6.
Was placed. When the wedge-shaped member 43 is raised and brought into contact with the gap between the pair of squeezing rolls 41, 41, the pair of squeezing rolls 41, 41 are opened together with the movable plates 54, 54, and the springs 52, 52 are compressed.

After the wedge-shaped member 43 descends, the movable plates 54, 54 are pressed by the compressed restoring force of the spring 52, and the gap between the squeezing rolls 41, 41 is closed. When the chemical is not applied to the glass plate G, the brush 3 is held between the pair of squeezing rolls 41, 41, and the tip of the brush 3 is immersed in the chemical in the chemical tank 5. Try to prevent.

When a chemical is to be applied to the glass plate G, the brush 3 immersed in the chemical tank 5 is raised, and when the brush 3 passes through the gap between the pair of squeezing rolls 41, the chemical is applied. Can be adjusted to an appropriate amount.

The brush 3 impregnated with an appropriate amount of the chemical is moved up and down and traversed by the elevating means 30 and the traversing means 20 and reciprocated at least once along a trajectory shown by a two-dot chain line in FIG. Then, the chemical solution can be uniformly applied to the upper surface side of the glass plate G.

If the locus of the brush 3 to be traversed by the traversing means 20 is registered and stored in a controller (not shown) while being moved up and down by the elevating means 30 in accordance with the curved surface shape of the plate-shaped body, Can be automatically repeated every time a is carried in.

Furthermore, if the shapes of various plate-like bodies are registered in the controller in advance, it is possible to quickly respond to changes in the type of product to be produced.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method and an apparatus for applying a chemical solution according to the present invention will be described in detail with reference to the drawings.

First, when the glass sheet G is carried in by the shuttle conveyor 11 at a pitch feed and stopped near the center of the coating apparatus 1, the shuttle conveyor 11 descends.
The glass plate is transferred onto the support rod 2. An elastic rubber material also serving as a cushioning material is adhered to the support rod 2 at several places to prevent scratches caused by contact with the glass plate G.

The mounting base 6 located outside the conveying means 10
A pair of squeezing rolls 41 on the upper part of the chemical solution tank 5 placed thereon,
The brush 3 sandwiched by 41 and having its tip immersed in the chemical solution tank 5
Is raised by the elevating unit 31 of the elevating means 30, the chemical solution soaked in the brush 3 is squeezed to an appropriate amount by the pair of squeezing rolls 41, 41.

Further, the brush 3 is raised by the lifting / lowering means 30,
After being separated from the squeezing roll, the glass sheet G is traversed by the traversing means 20 to near the upper part of one end of the glass sheet G. Then brush 3
Is moved down while slightly pushing the tip of the brush tip of the brush 3 against the upper surface of the glass plate G so that the tip of the bristle 3 is bent, and is moved up and down slightly in accordance with the curved surface shape of the glass plate G to traverse the glass plate G. It is moved while being applied to the opposite one end.

When the brush 3 is applied up to the opposite one end position of the glass plate G, the brush 3 is turned back, and the brush 3 is moved to the front end side of the glass plate G and applied. If necessary, two reciprocations may be made. When the application is completed, the brush 3 is raised by the lifting / lowering means 30, moved to the center of the squeezing rolls 41, and then lowered. At the same time, the wedge-shaped member 43 provided at the tip of the rod of the opening / closing cylinder 42 is raised to widen the gap between the pair of squeezing rolls, and the brush 3 is loosely inserted into the gap between the squeezing rolls 41, 41. The part was immersed in the chemical solution tank 5.

The coated glass plate G is lifted by the shuttle conveyor 11 as a transport means, and is again carried out by pitch feed to the next step. At the same time, the next glass sheet G is carried in by pitch feed from the previous process.

The chemical tank 5 has a pair of closed squeezing rolls 41, 41 and both ends thereof are covered with covers 44, 44 (one end is omitted).
Since the brush 3 is sandwiched by 1, the chemical liquid does not easily evaporate and has a structure to prevent drying.

Further, since the brush 3 is immersed in the chemical solution tank 5, the chemical immersed in the brush 3 is not dried as compared with the case where the brush 3 is exposed to the outside air. Although the preferred embodiment has been described above, the present invention is not limited to this, and various applications can be considered.

The pair of squeezing rolls 41, 41 may be opened and closed individually by an air cylinder or the like instead of lifting and lowering the wedge-shaped member 43. Further, the traversing means 20 and the elevating means 30 which are the driving means of the brush 3 may be moved by an articulated robot or the like.

Alternatively, the support rods 2, 2 of the glass plate G
Is not rod-shaped, but can support the glass plate G,
It may be supported by several point-like members. The glass plate G may be a flat plate or a curved plate. In addition, the glass plate was bonded to a single plate such as a tempered glass plate, a semi-tempered glass plate, a raw plate, or a plurality of tempered glass plates, or an intermediate film such as PVB or EVA or resin injection by combining a tempered glass plate and a raw plate glass plate. Laminated glass and the like are targeted.

The present invention can be applied not only to a glass plate but also to various panel materials. Further, if there is a portion where the application of the chemical solution is not desired, a masking tape or the like may be pasted in advance.

[0033]

According to the present invention, even when a chemical solution having a relatively fast solidifying and drying speed is applied to the entire desired surface of a flat or curved glass plate or the like with a simple structure, the coating unevenness can be obtained. It can be applied evenly and automatically at a high speed without any.

A pair of squeezing rolls, which also serve as a lid of the volatile chemical tank, are provided and closed, and a brush is interposed between the squeezing rolls to shut off the chemical in the chemical tank and the brush portion from the outside air. Evaporative drying of the chemical can be prevented.

Furthermore, the liquid adhering to the brush portion by the gap adjusting means of the squeezing roll does not cause dripping of the squeezed liquid to an appropriate amount, and there is no coating unevenness. Furthermore, since the width of the brush was a long brush having a width equal to or greater than the length of one side of the glass plate,
The coating speed is high, the coating can be performed without any seam, and the working efficiency and production efficiency are good.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a coating apparatus according to the present invention.

FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 showing a squeezing roll opening / closing means of the coating apparatus of the present invention.

FIG. 3 is a sectional view taken along the line BB of FIG. 1 showing a gap adjusting means of the coating apparatus of the present invention.

[Explanation of symbols]

 G Glass plate 1 Coating device 2 Support rod 3 Brush 5 Chemical tank 6 Mounting pedestal 10 Transport means 11 Shuttle conveyor 20 Traversing means 21 Traversing unit 22 Traversing guide 23 Drive motor 30 Lifting means 31 Lifting unit 32 Bracket 33 Drive motor 40 Squeeze roll open / close Means 41 Squeezing roll 42 Opening / closing cylinder 43 Wedge-shaped member 44 Cover 50 Gap adjusting means 51, 56 Gap adjusting screw 52 Spring 53 Hinge 54 Movable plate 55 Fixed plate

Claims (8)

[Claims] 1. A method for applying a chemical solution to a surface of a plate-like body stopped at a predetermined position on a transport conveyor, wherein a long brush having a width not less than the length of one side of the plate-like body is immersed in the chemical solution.
A method for applying a chemical solution, wherein the brush is reciprocated at least once between one end side and the opposite side of the plate-shaped body to uniformly apply the chemical solution to the surface of the plate-shaped body. 2. A reciprocating motion between one end side and an opposite side of the plate-like body while raising and lowering the brush along the curved surface shape of the plate-like body,
The method for applying a chemical according to claim 1, wherein the chemical is uniformly applied to the surface of the plate-like body. 3. A brush is lowered and inserted between a pair of squeezing rolls opened and closed by an opening / closing cylinder in an open state, a tip of the brush is immersed in a chemical solution tank, and the brush is raised with the squeezing rolls closed. The method according to claim 1 or 2, wherein the chemical is applied to the surface of the plate-like body with the brush after the chemical attached to the brush is reduced to a desired amount. 4. The method according to claim 1, wherein a wedge-shaped member is inserted from a gap between both ends of the pair of squeezing rolls so as to open the squeezing rolls. 5. An apparatus for applying a chemical solution to a plate-like body surface stopped at a predetermined position on a conveyor, wherein a long brush having a width not less than the length of one side of the plate-like body, and the brush being connected to the opposite side. Traversing means for traversing to the side, a chemical solution tank, and a pair of openable and closable apertures which close the upper portion of the chemical solution in the chemical solution tank from outside air, and close and squeeze the chemical solution attached to the brush by closing a pair of rolls. An apparatus for applying a chemical liquid, comprising a squeezing roll opening / closing means comprising a roll. 6. A chemical liquid applying apparatus according to claim 5, further comprising lifting means for raising and lowering the brush according to the curved surface shape of the plate-like body. 7. A wedge-shaped member which can be raised and lowered is provided at both lower ends between a pair of squeezing rolls as said squeezing roll opening and closing means.
7. The chemical liquid application device according to claim 5, wherein the wedge-shaped member is inserted into a gap between the pair of squeezing rolls to open and close the squeezing rolls. 8. An apparatus according to claim 5, further comprising a gap adjusting means for adjusting a closed gap between said pair of squeezing rolls.