JP2008055257A - Device and method for applying coating liquid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and a method for applying a coating liquid, in each of which the hardening/adhesion of a liquid gasket applied to a seal surface can be promoted easily, uniformly and surely by a simple constitution. <P>SOLUTION: The device for applying the coating liquid is provided with: a FIPG applicator 1 for discharging the liquid gasket G, which is hardened by water W and has an optional shape, from a FIPG coating nozzle 10 and applying the discharged liquid gasket having the optional shape to the seal surface S; and a hardening agent supply means 2 for supplying micronized water W to the periphery of the FIPG coating nozzle 10 as a hardening agent. The hardening agent supply means 2 has a micronized water spraying part 21 arranged on the periphery of the FIPG coating nozzle 10. The micronized water spraying part 21 has a plurality of spray holes 24 arranged around the FIPG coating nozzle 10. The FIPG coating nozzle 10 is moved/advanced while spraying the micronized water W against the periphery of the FIPG coating nozzle 10 to spray the micronized water W against the seal surface S before the liquid gasket G is applied and also against the liquid gasket G applied to the seal surface S. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a coating apparatus and a coating method, and more particularly to a coating apparatus and a coating method that apply a liquid gasket that is cured by a curing agent to a sealing surface of a member by discharging the liquid gasket from a nozzle.

  For example, a FIPG (Formed In Place Gasket) coating device that applies a liquid gasket is used to seal a sealing surface of members such as a chain case and an oil pan in an internal combustion engine of an automobile (for example, patents). Reference 1). Some liquid gaskets cure by absorbing the humidity in the air. When such a liquid gasket is used, curing and adhesion can be promoted by supplying water as a curing agent at the time of FIPG application.

  However, if a device that sprays a curing agent such as fine moisture onto the entire FIPG application portion at once is added to the FIPG application device, there arises a problem that the equipment is enlarged and the cost is increased.

  Therefore, as a conventional FIPG coating apparatus, there is one in which a fine moisture spray nozzle 35 is attached to a FIPG coating nozzle 10 that discharges a liquid gasket G, as shown in FIG. In this FIPG coating apparatus, when the liquid gasket G is applied to the seal surface S, the FIPG application nozzle 10 is moved along the seal surface S of the member to be applied, for example, as shown in FIG. The gasket G is continuously discharged from the FIPG application nozzle 10 and applied in a bead shape according to the shape of the seal surface S. At this time, the fine moisture spray nozzle 35 is positioned behind the FIPG application nozzle 10 in the moving direction, and the fine moisture W is sprayed on the surface of the liquid gasket G applied to the seal surface S of the member.

JP 2005-288255 A

  In the conventional FIPG applicator shown in FIG. 5, the fine moisture spray nozzle 35 is arranged behind the FIPG applicator nozzle 10 in the moving direction, and is applied to the surface of the liquid gasket G applied to the seal surface S of the member. On the other hand, since the fine moisture W as the curing agent is sprayed only, the fine moisture W as the curing agent is not supplied to the side applied to the seal surface S of the liquid gasket G, and the liquid gasket G is cured and bonded. There was a problem that it could not be promoted uniformly. Further, in the conventional FIPG coating apparatus, it is necessary to arrange the fine moisture spray nozzle 35 behind the FIPG coating nozzle 10 in accordance with the moving direction of the movement, and the configuration and control for such placement are complicated. There were also problems such as.

  The present invention has been made in view of the above-described problems, and provides a coating apparatus and a coating method that can easily and uniformly promote the curing and adhesion of a liquid gasket applied to a sealing surface with a simple configuration. The purpose is to do.

In order to solve the above-described problems, a coating apparatus according to the present invention is a coating apparatus that applies a liquid gasket that is cured by a curing agent to a sealing surface by discharging the liquid gasket from a nozzle, and the sealing surface to which the liquid gasket is applied And a hardener supply means for supplying a hardener to the surface of the liquid gasket applied to the seal surface, and further, a hardener supply means is disposed around the nozzle. It has a curing material spraying section, and a spraying port is arranged around the nozzle in the curing material spraying section.
Further, in order to solve the above-mentioned problems, an application method according to the present invention is a method in which a liquid gasket that is cured by a curing agent is discharged from a nozzle and applied to a seal surface, and the liquid gasket is applied to the seal surface. A curing agent is supplied, a liquid gasket is applied to the sealing surface to which the curing agent is supplied, and the curing agent is supplied to the surface of the applied liquid gasket.

According to the present invention, the curing agent supply means supplies the curing agent to the sealing surface to which the liquid gasket is applied and the surface of the liquid gasket applied to the sealing surface. In order to supply the curing agent uniformly to the entire liquid gasket applied to the sealing surface, an application device capable of easily and uniformly promoting the curing and adhesion of the liquid gasket applied to the sealing surface is provided. can do. Further, according to the present invention, the curing agent supply means has a curing material spraying portion disposed around the nozzle, and the spraying port is disposed around the nozzle in the curing material spraying portion. Accordingly, the curing agent can be easily and reliably supplied to the seal surface to which the liquid gasket is applied and the surface of the liquid gasket that is discharged from the nozzle and applied to the seal surface.
Further, according to the present invention, a curing agent is supplied to the sealing surface to which the liquid gasket is applied, the liquid gasket is applied to the sealing surface to which the curing agent is supplied, and the curing agent is applied to the surface of the applied liquid gasket. Since the hardener is uniformly supplied to the entire liquid gasket applied to the sealing surface, the curing and adhesion of the liquid gasket applied to the sealing surface can be done easily and uniformly. An application method that can be promoted can be provided.

(Aspect of the Invention)
In the following, the invention that is claimed to be claimable in the present application (hereinafter referred to as “claimable invention”. The claimable invention is at least the “present invention” to the invention described in the claims. Some aspects of the present invention, including subordinate concept inventions of the present invention, superordinate concepts of the present invention, or inventions of different concepts) will be illustrated and described. As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is for the purpose of facilitating the understanding of the claimable invention, and is not intended to limit the combinations of the constituent elements constituting the claimable invention to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, etc., and as long as the interpretation is followed, another aspect is added to the form of each section. In addition, an aspect in which constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention. In each of the following items, item (1) corresponds to claim 1, item (2) corresponds to claim 2, and item (7) corresponds to claim 3.

(1) A coating apparatus for applying a liquid gasket that is cured by a curing agent to a sealing surface by discharging from a nozzle,
A coating apparatus comprising: a curing agent supply means for supplying a curing agent to the seal surface to which the liquid gasket is applied and the surface of the liquid gasket applied to the seal surface.
In the invention described in this section, the curing agent supply means includes a curing agent on the sealing surface in a state before the liquid gasket is applied, and on the surface of the liquid gasket that is discharged from the nozzle and applied to the sealing surface. Therefore, the entire liquid gasket applied to the sealing surface can be uniformly cured.

(2) The curing agent supply means has a curing material spraying portion disposed around the nozzle, and the spraying port is disposed around the nozzle in the curing material spraying portion. The coating apparatus according to (1).
In the invention described in this section, when the spray port of the curing agent spraying part is arranged around the nozzle that discharges the liquid gasket, the seal surface to which the liquid gasket is applied and the nozzle are relatively moved. Even so, it is possible to easily and reliably supply the curing agent to the sealing surface to which the liquid gasket is applied and to the surface of the liquid gasket that is discharged from the nozzle and applied to the sealing surface.

(3) The coating apparatus according to (2), wherein the curing agent supply unit includes a position selection mechanism that selectively supplies a curing agent to a spray port at a predetermined position with respect to the periphery of the nozzle.
In the invention described in this section, among the spray ports for spraying the hardener disposed around the nozzle for discharging the liquid gasket, the position is selected so as to selectively supply the hardener to the spray ports only at predetermined positions. Since the mechanism controls ON / OFF, even when the moving direction of the nozzle that discharges the liquid gasket is changed relative to the seal surface, the seal surface on which the liquid gasket is applied without waste and the seal surface Thus, the curing agent can be easily and reliably supplied to the surface of the liquid gasket that is discharged from the nozzle and applied.

(4) The coating apparatus according to (2), wherein the curing agent supply unit includes a supply amount adjustment mechanism that adjusts a supply amount of the curing agent to a spray port at a predetermined position with respect to the periphery of the nozzle.
In the invention described in this section, the supply amount of the curing agent to the spray port at a predetermined position is controlled by the supply amount adjusting mechanism among the spray ports that spray the hardener disposed around the nozzle that discharges the liquid gasket. Even if the moving direction of the nozzle that discharges the liquid gasket is changed relative to the seal surface in order to control the adjustment, the nozzle for the seal surface to which the liquid gasket is applied without waste and the seal surface It is possible to easily and reliably supply the curing agent to the surface of the liquid gasket discharged and applied.

(5) The coating apparatus according to any one of (1) to (4), wherein the curing agent supply means supplies moisture as a curing agent.
In the invention described in this section, when the liquid gasket is cured by absorbing the humidity in the air, the seal surface to which the liquid gasket is applied, and the nozzle is discharged and applied to the seal surface. By supplying water to the surface of the liquid gasket, curing and adhesion of the liquid gasket can be surely promoted.

(6) The coating apparatus according to (5), wherein the curing agent supply means supplies mist-like fine moisture.
In the invention described in this section, the entire liquid gasket applied to the sealing surface can be more uniformly cured by spraying the water supply with mist-like fine moisture.

(7) A method in which a liquid gasket that is cured by a curing agent is discharged from a nozzle and applied to a seal surface,
Supplying a curing agent to the sealing surface before applying the liquid gasket, applying the liquid gasket to the sealing surface supplied with the curing agent, and supplying the curing agent to the surface of the applied liquid gasket. A characteristic coating method.
The invention described in this section applies a liquid gasket to a seal surface supplied with a curing agent, and further supplies a curing agent to the surface of the applied liquid gasket, thereby applying a liquid gasket. Since the curing agent is supplied to the surface of the applied liquid gasket, the entire liquid gasket applied to the sealing surface can be uniformly cured.

(8) The coating method according to (7), wherein a seal surface on which the liquid gasket is applied and the nozzle are relatively moved while supplying a curing agent around the nozzle.
In the invention described in this section, when applying the liquid gasket by relatively moving the seal surface and the nozzle, by spraying and supplying a curing agent around the nozzle, the seal surface to which the liquid gasket is applied The entire surface of the applied liquid gasket can be reliably supplied to the surface of the applied liquid gasket, and the entire liquid gasket applied to the sealing surface can be uniformly cured.

(9) The coating method according to (7) or (8), wherein mist-like fine moisture is supplied as the curing agent.
The invention described in this section is applied to a sealing surface by supplying sprayed fine mist of water as a curing agent when the liquid gasket is cured by absorbing humidity in the air. The entire liquid gasket can be cured more uniformly.

First, an embodiment of the coating apparatus of the present invention is a so-called moisture curing type or moisture absorption curing type in which the liquid gasket G is chemically changed and cured by absorbing humidity in the air, The case where water is used as the curing agent will be described in detail with reference to FIGS. In the drawings, the same reference numerals are given to similar or corresponding parts.
The coating apparatus of the present invention is generally a FIPG that discharges a liquid gasket G that is cured by water W as a curing agent from a nozzle (hereinafter referred to as a FIPG coating nozzle) 10 to an arbitrary shape and applies it to the sealing surface S of one member. A coating machine 1, a seal surface S in a state before the liquid gasket G is applied, and a curing agent supply means 2 that supplies the curing agent W to the surface of the liquid gasket G applied to the seal surface S. ing. The curing agent supply means 2 is generated by the fine moisture generator 20 that is disposed around the FIPG application nozzle 10 and the fine moisture generator 20 that generates water as the curing agent as mist-like fine moisture W. The fine water spray unit 21 for spraying the fine water W is provided with a spray port (described later) over the periphery of the FIPG application nozzle 10.

  The sealing surface S of one member to which the liquid gasket G is applied is formed in correspondence with the sealing surface of the other member joined thereto. In the embodiment shown in FIG. 1, the seal surface S is formed in an annular rectangle, and is positioned and fixed by a jig or the like.

  The FIPG applicator 1 includes a tank 11 for storing the liquid gasket G, a FIPG application nozzle 10 for discharging the liquid gasket G onto the sealing surface S in a bead shape, and the liquid gasket G from the tank 11 through a hose 12 to a predetermined pressure. And a FIPG coating pressure control device 13 that supplies the fuel to the FIPG coating nozzle 10. The FIPG application nozzle 10 is supported by a robot arm or the like, and continuously moves and advances as indicated by arrows in FIG.

  In the case of the embodiment shown in FIG. 3, the fine moisture spraying unit 21 of the curing agent supply means 2 is arranged around the FIPG application nozzle 10 and supplied with fine moisture from the fine moisture generator 20 through the hose 22. An annular chamber 23 and a plurality of spray holes 24 formed over the entire lower surface of the chamber 23. In this embodiment, the plurality of spray holes 24 constitute a spray port arranged over the periphery of the FIPG application nozzle 10. The fine moisture generator 20 generates mist-like fine moisture W by, for example, an ultrasonic vibrator, and a blower for sending the mist-like fine moisture W to the chamber 23 via the hose 22 is also necessary. Is provided. The fine moisture W supplied into the chamber 23 is supplied so as to be blown out from the spray hole 24 to the periphery of the FIPG application nozzle 10 as shown in FIG. Therefore, as shown in FIG. 3, in the forward direction of movement of the FIPG application nozzle 10, fine moisture W is sprayed on the seal surface S before the liquid gasket G is applied, and behind the forward direction of movement, Fine water W is sprayed onto the liquid gasket G applied to the seal surface S by the FIPG application nozzle 10.

  That is, fine moisture W is sprayed as a curing agent on the seal surface S in a state before the liquid gasket G is applied, and the liquid gasket G is applied to the seal surface S on which the fine moisture W is sprayed by the FIPG application nozzle 10. It is applied and fine moisture W is further sprayed onto the surface of the applied liquid gasket G. Therefore, the fine moisture W can be sprayed evenly over the entire surface of the liquid gasket G. In addition, as shown by the arrows in FIG. 1, even when the moving traveling direction of the FIPG application nozzle 10 is changed depending on the shape of the seal surface S to which the liquid gasket G is applied, fine moisture W is formed around the FIPG application nozzle 10. Since the FIPG application nozzle 10 is moved and moved in accordance with the shape of the seal surface S while spraying, the seal surface S in a state before the liquid gasket G is always applied in front of the movement direction of the FIPG application nozzle 10. In addition, the fine moisture W can be reliably sprayed on the liquid gasket G applied to the seal surface S by the FIPG application nozzle 10 at the rear in the moving direction. When the liquid gasket G is applied in a state where the fine moisture W is sprayed on the seal surface S, and the fine moisture W is further sprayed on the surface of the applied liquid gasket G, the other seal surface S of one member is applied to the other seal surface S. Curing / adhesion is promoted in a state where the sealing surfaces of the members are joined and the liquid gasket G is appropriately deformed between the sealing surfaces.

Next, another embodiment of the present invention will be described with reference to FIG. Note that portions that are the same as or correspond to those in the above-described embodiment are denoted by the same reference numerals, description thereof is omitted, and only different portions are described.
In the coating apparatus in this embodiment, a plurality of fine moisture spray nozzles 25 constituting a spray port for spraying fine moisture W are provided around the FIPG application nozzle 10, and only the fine moisture spray nozzle 25 at a predetermined position is provided. And a position selection mechanism (described later) for selectively supplying fine moisture W. The fine moisture spray nozzle 25 is held around the FIPG application nozzle 10 by a holding member 26 provided around the FIPG application nozzle 10. That is, in this embodiment, the fine moisture spraying portion 21 of the curing agent supply means 2 is a fine moisture spray nozzle held around the FIPG application nozzle 10 by a holding member 26 provided around the FIPG application nozzle 10. 25 constitutes a spraying opening.

  In the case of the embodiment shown in FIG. 4, the position selection mechanism is divided into a plurality of ends 22 a of the hose 22 connected to the fine moisture generator 20 according to the number of fine moisture spray nozzles 25. The tip 22a of the hose 22 is detachably connected to the fine moisture spray nozzle 25. As shown at the right end of FIG. 4, by not connecting the branched hose tip 22a to the fine moisture spray nozzle 25 at an arbitrary predetermined position, the fine moisture spray nozzle 25 is not supplied with fine moisture W, and therefore The fine moisture W is not sprayed from the fine moisture spray nozzle 25. The tip 22a of the branched hose is configured so that the minute moisture W does not leak from the tip when not connected to the minute moisture spray nozzle 25. Thereby, it becomes possible to selectively spray the fine moisture W only on an arbitrary predetermined position with respect to the periphery of the FIPG application nozzle 10.

  The present invention is not limited to the above-described embodiment. For example, a plug is attached to the blowing hole 24 at an arbitrary predetermined position of the chamber 23 shown in FIG. The position selection mechanism can be configured by spraying the fine moisture W from the spray hole 24, and an open / close valve is interposed between the fine moisture spray nozzle 25 shown in FIG. 4 and the branched tip 22a of the hose. The position selection mechanism can be configured by mounting.

  Furthermore, as shown in FIG. 4, the present invention is configured so that the tip 22 a of the branched hose is detachably connected to the fine water spray nozzle 25, so that an arbitrary predetermined amount around the FIPG application nozzle 10 can be obtained. It can be made to function also as a supply amount adjustment mechanism that adjusts the supply amount of the fine moisture W with respect to the position. That is, by supplying the fine water W only from the fine water spray nozzle 25 at a predetermined position, the supply amount of the fine water W to an arbitrary predetermined position with respect to the periphery of the FIPG application nozzle 10 can be adjusted. . Further, as the supply amount adjusting mechanism, a flow rate adjusting valve may be interposed between the fine moisture spray nozzle 25 shown in FIG. 4 and the branched tip 22a of the hose.

  In this way, the liquid gasket G applied to the seal surface S by performing ON / OFF control of supply of fine moisture W at any predetermined position with respect to the periphery of the FIPG application nozzle 10 or adjustment control of the supply amount. It is possible to supply fine moisture W without waste in an optimal state, and promote curing and adhesion.

  The present invention is not limited to the above-described embodiment, and can also be applied to the case where a liquid gasket G other than the so-called moisture curing type or humidity absorption curing type is employed. In this case, a curing agent W other than water is used corresponding to the liquid gasket G to be used.

It is the perspective view shown in order to demonstrate the state which supplies a hardening | curing agent, apply | coating a liquid gasket with respect to a sealing surface with the coating device of this invention. In the coating apparatus of this invention, it is the perspective view shown in order to demonstrate the state which sprouted the fine water | moisture content around the FIPG application nozzle. It is sectional drawing which shows the principal part of the coating device in one Embodiment of this invention. It is a front view which shows the principal part of the coating device in another embodiment of this invention. It is a front view which shows the principal part of the conventional coating device.

Explanation of symbols

1: FIPG coating machine, 2: curing agent supply means, 10: FIPG coating nozzle, 21: fine moisture spraying part, 23: chamber, 24: spraying hole (spraying port), 25: fine moisture spraying nozzle (spraying port), G: Liquid gasket, S: Seal surface, W: Fine moisture (curing agent)

Claims (3)

A coating device for discharging a liquid gasket cured by a curing agent from a nozzle and applying the liquid gasket to a seal surface,
A coating apparatus comprising: a curing agent supply means for supplying a curing agent to the seal surface to which the liquid gasket is applied and the surface of the liquid gasket applied to the seal surface.   The curing agent supply means includes a curing material spraying portion disposed around the nozzle, and the spraying port is disposed in the curing material spraying portion over the periphery of the nozzle. Item 2. The coating apparatus according to Item 1. A liquid gasket that is cured by a curing agent is discharged from a nozzle and applied to a seal surface,
A curing agent is supplied to the sealing surface to which the liquid gasket is applied, a liquid gasket is applied to the sealing surface to which the curing agent is supplied, and a curing agent is supplied to the surface of the applied liquid gasket. Application method.

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