JP3137492U - Coating device - Google Patents

Abstract

An object of the present invention is to apply a molten material in a liquid state by spraying it with a heated gas before solidifying the molten material on the surface of an object, for example, coating the surface of a member with a wax material or the like with high quality. Providing equipment.
A coating apparatus for spraying a liquefied material, a tank 11 for heating and holding a wax material to be heated and melted in a liquid molten state, and a molten wax material held in a molten state in the tank The spray gun 12 is sprayed from the nozzle 24 in the form of a mist and the like, and the spray gun is housed in a cylindrical exterior member 42 and air heated to a high temperature is ejected together with the molten wax material sprayed from the nozzle. The dryer 13 is provided with regulation plates 45 and 46 in the exterior member that make the high-temperature air to be swirled into the exterior member, and is heated so as to cover the periphery of the molten wax material ejected from the nozzle. It spouts while making the air vortex.
[Selection] Figure 2

Description

  The present invention relates to a coating apparatus, and more particularly to a device that melts a wax material, such as wax material or paraffin wax, at room temperature, and sprays and coats the surface of an object to coat the surface.

  Conventionally, when the surface of a member is coated / painted with a paint or the like, for example, the paint or the like is applied to a brush or sponge roll. 2. Description of the Related Art For example, a coating apparatus that enables uniform coating is used when coating an exterior of an automobile or the like (see, for example, Patent Documents 1 and 2).

  However, in such a conventional coating apparatus, since the paint is sprayed in the form of a mist with high-pressure air compressed in the atmosphere, it is common to use a material such as a paint made liquid by a diluent or the like. It is. For this reason, in the case of a material liquefied by heating and melting (a material that solidifies at room temperature) instead of a material such as a paint that dries and solidifies by evaporation of the diluent, immediately after injection It solidifies before it reaches the surface of the object through heat exchange with the surrounding air. For this reason, a material that solidifies at room temperature cannot be adhered to the surface of the object in a state that it cannot be coated with a uniform film thickness and obtains a desired adhesion strength. I can't.

  Here, in an injection device for injecting a hot-melt adhesive, an apparatus that employs a structure that can spray the molten material in a mist form by ejecting a high-temperature gas together with the molten material has been proposed ( For example, refer to Patent Document 3). In this apparatus, since the molten material and the hot gas are jetted in a mixed state, the molten material cannot be sprayed while being covered with the hot gas. In addition, there is a disadvantage that the molten material sprayed in the form of mist solidifies before reaching the surface of the object.

In order to solve this problem, the present applicant has intensively researched and developed, and even a material that solidifies at room temperature is solidified immediately after injection by injecting the heated and melted material into a heated gas. Therefore, a coating apparatus that can allow the molten material to reach the surface of the object and uniformly coat with a desired adhesion strength in a state in which the molten material is familiar to the surface has been developed. In particular, various types of jet forms of high-temperature gas that are jetted together with the molten material can be considered, but the coating apparatus is intended to reach the target object with little influence of disturbance such as ambient air temperature around the melt jet material. Was first developed.
JP 2007-7508 A JP 2007-14912 A Japanese Patent Publication No.49-46382

  Therefore, the present invention melts a solid material at room temperature and sprays it with a heated gas, so that the molten material is applied to the surface of the object before it is solidified. An object of the present invention is to provide a coating apparatus that can be coated with a material or the like.

  The first device of the coating apparatus that solves the above problems is a coating apparatus that applies a wax material to the surface of an object by melting and spraying a wax material, such as wax material or paraffin wax, which is solid at room temperature. A melt holding unit that holds the wax material that is melted by heating in a liquid molten state, a material injection unit that injects the molten wax material held in the molten state by the melt holding unit, and a high temperature. A gas ejection section for ejecting a high-temperature gas, and the melting and holding section includes a tank having a capacity capable of storing and carrying a wax material that is melted by heating, and the material injection section is configured to store the molten wax material. One end of the material flow path to be pumped is inserted into the tank of the melting holding section, and a nozzle is provided on the other end of the material flow path to spray the molten wax material in the form of a mist. The gas injection section is formed with a gas flow path that blows high temperature gas around the material flow path of the material injection section and ejects it in substantially the same direction as the molten wax material, and material injection located in the hot gas outlet The gas flow path is provided with a regulating member that vortexes and blows out the high-temperature gas blown through the gas flow path from around the nozzle of the part.

  In this device, the molten wax material held in a liquid state in the carrying tank can be injected into the high-temperature gas and reach the surface of the object while being covered with the high-temperature gas. At this time, the molten wax material is sprayed in the form of a mist by being pumped in the material flow path while being heated by the high-temperature gas in the gas flow path so that the material flow path is not exposed to the outside air temperature and falling. As a result, the surface of the object is uniformly sprayed and coated. Furthermore, the hot gas is ejected from the jet outlet in a vortex shape, so that it can reach the target in a state where it has excellent traveling characteristics and is less affected by the outside air, etc. It can be applied comfortably and applied to the object in a state where it is present and covered without being scattered.

  Therefore, it is possible to carry the device without burden and easily and arbitrarily perform desired work, and the molten wax material is made into a vortex without being solidified by heat exchange with the surrounding outside air (room temperature air). In a stable state, the molten wax material can be made to reach the surface of the object while being applied in a high-temperature gas ejected in substantially the same direction.

  According to a second device of the coating apparatus for solving the above-mentioned problem, in addition to the specific matter of the first device, the gas ejection unit ejects the hot gas from the nozzle of the material ejection unit. It is designed to be able to advance and retreat in the direction.

  In this device, the nozzle for ejecting the molten wax material can be retracted into the hot gas ejection port. Therefore, by adjusting the position (exposure) of the nozzle of the molten wax material in accordance with the outside air temperature, for example, the temperature of the molten wax material ejected when the nozzle is exposed to the outside air in the extremely cold region is lowered before the ejection. It can be avoided.

  According to a third device of the coating apparatus for solving the above-described problems, in addition to the specific matters of the first or second device, the melting and holding unit and the gas jetting unit have heating means that can be individually adjusted for heating. It is characterized by this.

  In this device, the molten wax material and the high-temperature gas can be individually adjusted by heating to a desired temperature. Therefore, for example, the molten wax material is heated to a temperature that does not boil, and the high-temperature gas is heated to a temperature higher than the boiling temperature so that the molten wax material can fly as far as possible without solidifying the object. You can also

  A fourth device of the coating apparatus that solves the above-mentioned problem is that, in addition to the specific matters of any one of the first to third devices, the gas ejection part adjusts the condition for blowing the high-temperature gas into the gas flow path. It is characterized by having the adjustment means to do.

  In this device, the ejection speed (wind speed) and the ejection volume (air volume) of the hot gas can be adjusted. Therefore, by adjusting the ejection speed and the ejection amount according to the distance to the object, it is possible to reliably reach the object together with the molten wax material with the high-temperature gas, and the periphery of the molten wax material to be sprayed is highly reliable. It is possible to reliably apply the molten wax material to the object while covering it.

  As described above, according to the present invention, the molten wax material in the tank to be carried is sprayed in a mist shape into the high-temperature gas ejected in a vortex shape. A sprayed molten wax material can be sprayed uniformly on the surface of the object while it is covered, and the molten wax material applied to the surface of the object can be blended and solidified to be coated with high quality. . Therefore, for example, the surface of a desired object can be covered with a thin film of a wax material such as paraffin wax that is solid at room temperature. It is possible to realize adhesion prevention that prevents adhesion to the like.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The best embodiment of the present invention will be described below with reference to the drawings. 1-5 is a figure which shows one Embodiment of the coating device which concerns on this invention.

  1 and 2, the coating apparatus 10 contains a wax material such as a wax material or paraffin wax that is in a solid state at room temperature but melts by heating, and heats the wax material to a molten state. A holding tank (melting holding part) 11, a spray gun (material injection part) 12 for spraying the molten wax material in the tank 11 in a desired form such as a mist, and a high temperature gas around the spray gun 12 As a delivery path, a dryer (gas ejection portion) 13 that ejects heated air in the injection direction of the molten wax material is provided. The coating device 10 is designed such that the dryer 13 ejects heated air so as to cover the periphery of the molten wax material (liquid material) sprayed from the tank 11 by the spray gun 12.

  The tank 11 has a space S in which the wax material can be accommodated and can be closed by the lid member 14, and heat is generated in the lower part of the accommodation space S by connecting an electric wire 15 a to an outlet or the like. A heater (heating / holding means) 15 that can be heated is built in and can be heated to a set temperature corresponding to a volume (not shown). Thereby, this tank 11 can heat the wax material accommodated in the accommodation space S to a desired temperature by the heater 15 and keep it in a molten state. Needless to say, the volume may be set in multiple steps according to the wax material used, or may be finely adjusted in a stepless manner according to the wax material.

  The tank 11 is set as a storage capacity of the molten wax material in the accommodation space S to such an extent that the entire coating apparatus 10 can be lifted up and operated. It is designed so that the operation of injecting the molten wax material toward the object can be performed while changing the direction.

  Further, the tank 11 is set so that the heater 15 is turned on / off so that the wax material in the accommodation space S is set to a set temperature and kept in a molten state. While the lamp 16a is turned on to notify that heating is in progress, while the heater 15 is turned off or during heat-retaining energization, the lamp 16b is turned on to reach a molten state that can be used while keeping warm. Notify that Further, the tank 11 is formed so as to wrap the inner wall member 17a forming the space S for accommodating the molten wax material with the exterior member 17b, and the heat insulating member 14a is attached to the inner surface of the lid member 14, Thermal insulation performance is improved by the gap G formed between the inner wall member 17a and the exterior member 17b and the heat insulating member 14a of the lid member 14.

  The spray gun 12 includes a gun body 21 that sprays the molten wax material in the tank 11 in a desired form by an operator holding the grip portion 21a and pulling the lever 21b in the gripping direction. 11 is inserted into the accommodation space S so as to be able to supply the molten wax material in 11 and communicated, and the molten wax material in the tank 11 is formed in the gun body 21 from the insertion pipe 22 to be described later. And a pressurizing pipe 23 for introducing a gas for pressurizing the inside of the accommodation space S as pressure to be supplied and injected into the internal flow path 26. As a result, the spray gun 12 pumps and supplies the molten wax material in the accommodation space S to the gun body 21 via the insertion pipe 22 by increasing the internal pressure in the tank 11 via the pressure pipe 23. Can be injected.

  The gun main body 21 is provided with an injection pipe 25 having a nozzle 24 for injecting a liquid material from the injection port in a desired form at the distal end portion, and as shown in FIG. An internal flow path 26 communicating from the end portion to the grip portion 21a side is formed. The internal flow path 26 is communicated with the other end of the bypass pipe 27 having one end communicating with the upper part of the insertion pipe 22 on the grip 21a side, and the lever 21b is pulled to move the piston valve 21c. As a result, it opens and closes, and communicates / blocks with the bypass pipe 27. As a result, when the lever 21b is pulled, the gun body 21 communicates from the insertion pipe 22 to the bypass pipe 27, the internal flow path 26, and the injection pipe 25 to pump and supply the molten wax material to the nozzle 24. And can be injected.

  The nozzle 24 of the gun body 21 is rotated coaxially in the direction of contact with and away from the tip of the injection pipe 25 to move the liquid molten wax material fed through the injection pipe 25 in a straight line. It is designed to have a general nozzle structure that can be adjusted to spray or to spray the molten wax material in a mist, for example. Here, the gun body 21 supplies the compressed air to the internal flow path 26 from the grip portion 21 a side and passes the upper part of the insertion pipe 22, thereby allowing the liquid material in the tank 11 to pass through the upper part of the insertion pipe 22. Since a thing designed to be jetted while being sucked up by a high-speed gas passing through the pipe is diverted, a bypass pipe 27 is externally attached to form a flow path (distribution path) of the molten wax material. However, the present invention is not limited to this, and it is needless to say that the bypass pipe 27 may be built in, or the tank 11 may be connected to the grip portion 21a side.

  The gun body 21 is made of a metal material that is excellent in heat conduction. In particular, the bypass pipe 27 is made of a copper pipe. In addition, when the grip part 21a of the gun main body 21 becomes high temperature, for example, the surroundings may be covered with a heat insulating material so as to be gripped.

  The insertion pipe 22 is provided so as to communicate with the accommodation space S by being continuously provided at a position separated from the grip portion 21 a of the gun body 21 and passing through the center of the lid member 14 of the tank 11. One end of the bypass pipe 27 of the gun main body 21 is communicated with the upper part by drilling the connecting position with the gun main body 21. Further, since the insertion pipe 22 is exposed to the outside above the lid member 14 of the tank 11, a heating space 43 described later is provided between the lid member 14 and the gun body 21. The temperature of the molten wax material flowing through the pipe (the flow path of the molten wax material) is prevented from being lowered, for example, by heating.

  The pressure pipe 23 is communicated by inserting the front end portion 23a into the upper portion of the storage space S of the tank 11, and a pressure hose for supplying compressed air by a compressor (not shown) can be connected to the rear end portion 23b. A joint 28 is provided. As a result, the pressurizing pipe 23 can introduce high-pressure compressed air generated by the compressor into the accommodating space S of the tank 11 and pressurize it to a set pressure. That is, a separate compressor connected to and connected to the pressurizing pipe 23 via a pressure hose constitutes the pressurizing means, and the pressurizing pump may be provided directly in the tank 11. In this way, by connecting and connecting to a separately installed compressor via a pressure hose, it is configured with an inexpensive structure that can be handled easily without becoming heavy. The pressurizing means may be connected to a high pressure cylinder instead of the compressor.

  The pressure pipe 23 is provided so as to be inserted into the exterior member 17b from the upper side of the tank 11 and enter the gap G between the tank 11 and the inner wall member 17a. The distal end portion 23 a is inserted into the inner wall member 17 a and communicated with the storage space S of the tank 11. As a result, the pressurized pipe 23 can introduce the compressed air from the compressor into the accommodation space S in the inner wall member 17a after heating the compressed air from the compressor 11 in the exterior member 17b of the tank 11. It is possible to avoid cooling the molten wax material. In addition, the pressure gauge 29 which measures the pressure in the storage space S is attached to the tank 11, and it can be confirmed whether the inside of the storage space S is pressurized to the desired pressure.

  The dryer 13 is connected to a dryer main body 31 that ejects air (gas) heated to a high temperature, and a hot air outlet 31 a on the tip side of the dryer main body 31, and is fixed to the gun main body 21 of the spray gun 12. The cylindrical exterior member 42 is provided. That is, the dryer 13 includes the gun body 21 of the spray gun 12 in an exterior member 42 that forms a delivery path for high-temperature air ejected from the dryer body 31. When the dryer body 31 of the dryer 13 is turned on by connecting the electric wire 13a to an outlet or the like, the built-in heating wire (heater) generates heat and the fan is operated to supply air to the vicinity of the heating wire. It is a general dryer with a simple, lightweight, and inexpensive structure that blows heated high-temperature air by allowing it to pass through, and the temperature and air volume of high-temperature air blown can be adjusted according to the volume (not shown) . This volume may be one that can adjust the temperature and air volume in multiple stages corresponding to the usage environment, or the one that can be finely adjusted steplessly depending on the usage environment, as with the heater 15 of the tank 11. Needless to say, it is good.

  As shown in FIG. 4, the exterior member 42 has a male screw 42a engraved on the outer peripheral surface of the tip, and a female screw 44a in which the cap member 44 is engraved on the inner peripheral surface is used as the male screw 42a. It is attached by screwing. Thereby, the exterior member 42 can advance and retract the cap member 44 with respect to the nozzle 24 of the gun body 21 of the spray gun 12 by adjusting the screwing position (depth) of the male screw 42a and the female screw 44a. In addition, the nozzle 24 of the gun body 21 can be exposed from the distal end portion 44b of the cap member 44, or can be placed in the distal end portion 44b.

  The exterior member 42 is provided with a regulation plate (regulation member) 45 that regulates the flow of high-temperature air blown by the dryer 13 on the upstream side of the cap member 44, and the regulation plate 45 is connected to the exterior member 42. Fixed so as to be positioned between the injection pipes 25, as indicated by broken line arrows in FIG. 4 (b), the high-temperature air blown from the dryer body 31 is guided counterclockwise so as to slide on the back side of the drawing. By doing so, it is formed so as to be twisted and delivered to the cap member 44 side. Similarly, the cap member 44 is also provided with a regulation plate (regulation member) 46 that regulates the flow of high-temperature air blown by the dryer 13, and this regulation plate 46 is guided by the upstream regulation plate 45 ( Similarly, as shown by a broken line arrow in FIG. 4C, the high-temperature air that has been sent out after being regulated is twisted and guided to the outside by being guided counterclockwise. Thereby, the exterior member 42 can eject the high-temperature air heated and blown by the dryer 13 in a spiral manner so as to twist counterclockwise, and can cause the high-temperature air to advance straight in the injection direction. it can. The restricting plate 46 of the cap member 44 is formed with a space that allows relative movement of the nozzle 24 so that the nozzle 24 of the gun body 21 can be moved forward and backward in a state in which the nozzle 24 is housed.

  Further, the cap member 44 at the tip of the exterior member 42 has a tip 44b opposite to the female screw 44a having a diameter smaller than that of the female screw 44a, and the high-temperature air that is heated by the dryer 13 is blown from the tip 44b. The air can be discharged after being squeezed, and the hot air can be ejected while being brought together.

  Further, as shown in FIG. 5, the exterior member 42 is provided with a heating space 43 around the insertion pipe 22 between the lid member 14 and the gun body 21 at the connection position with the tank 11. In the upper part of the warm space 43, there is provided an inlet plate 47 that guides the hot air that is opened to the dryer body 31 side and is blown downward, as indicated by the arrow in the figure, and on the cap member 44 side thereof. An outlet plate 48 is provided to guide the hot air pushed out from the heating space 43 toward the cap member 44 (regulating plate 45). As a result, the insertion pipe 22 between the lid member 14 of the tank 11 and the gun body 21 can be heated by the high-temperature air blown by the dryer 13, and the temperature of the molten wax material flowing through the insertion pipe 22 decreases. Can be avoided, and the wax material remaining in the interior can be heated and melted.

  As a result, the coating apparatus 10 accommodates the wax material in a solid state at normal temperature in the accommodating space S of the tank 11, and then connects the electric wire 15 a of the tank 11 to an outlet to cause the heater 15 to generate heat. The wax material in the space S can be heated and held in a molten state. Further, the tank 11 can pressurize the accommodating space S to a set pressure by connecting a pressure hose connected to a compressor (not shown) to the joint 28 of the pressurizing pipe 23. Also, the dryer 13 can blow the hot air heated by the dryer body 31 into the exterior member 42 and eject it from the tip of the cap member 44 by connecting the electric wire 13a to an outlet and turning it on.

  Then, after this preparation, the spray gun 12 opens the internal flow path 26 of the gun body 21 by pulling the lever 21b, and enters the insertion pipe 22 inserted into the accommodation space S of the tank 11. The molten wax material can be caused to flow by the pressure (injection pressure) in the accommodation space S, and is sent from the insertion pipe 22 to the bypass pipe 27, the internal flow path 26 of the gun body 21, and the injection pipe 25, The molten wax material can be jetted from the nozzle 24 at the tip of the jet pipe 25.

  At this time, high-temperature air blown from the front end side of the exterior member 42 of the dryer 13 is blown around the nozzle 24 of the spray gun 12, and the molten wax material injected from the nozzle 24 is heated by the dryer 13. It is ejected in the same direction as the air ejection direction. Here, the spray direction of the molten wax material of the spray gun 12 and the spray direction of the high-temperature air of the dryer 13 do not necessarily coincide with each other, but the spray speed of the molten wax material does not decrease, In addition, since the injection direction does not change greatly and the operation can be performed efficiently and easily, it is needless to say that it is preferable to match them as in the present embodiment.

  The spray gun 12 can be operated by rotating the nozzle 24 at the tip of the injection pipe 25 of the gun body 21 to select whether the molten wax material is sprayed in a straight line or a mist. The gun body 21 is solidified by being exposed to the outside air and being cooled because the heated air blown in the same direction from the front end side of the exterior member 42 of the dryer 13 exists and circulates. Therefore, the wax material can be sprayed and applied on the surface of the object while being melted.

  On the other hand, since the molten wax material is injected into the high-temperature air ejected by the dryer 13, it can be covered with the high-temperature air and reach the surface of the object in a molten state without direct contact with the outside air. In particular, even when the nozzle 24 at the tip of the spray pipe 25 of the spray gun 12 is adjusted and sprayed in the form of a mist, it can reach the surface of the object without being solidified by heat exchange with the outside air. It can be coated and solidified as a uniform film with high quality in a state where it is spread and familiar.

  Furthermore, the exterior member 42 is directed to the surface of the object in a state of being gathered without being scattered by the outside air by making the high-temperature air ejected by the dryer 13 by the internal restriction plates 45 and 46 together with the cap member 44 into a spiral shape. It can be jetted to reach and reach straight, and the molten wax material is allowed to reach the surface of the object while being covered in the high-temperature air, and it is more effective and uniform in quality. It can be coated and solidified as a film.

  Further, since the gun body 21 is made of metal that is located in the high-temperature air ejected by the dryer 13 in the exterior member 42 and is excellent in heat conduction, the gun body 21 is also included from the insertion pipe 22 in the heating space 43. Even the wax material remaining in the internal flow path 26 or the bypass pipe 27 and solidified can be reheated and melted. The gun body 21 may be formed with a plurality of heat absorbing fins that protrude into a plurality of rib shapes so that heat exchange can be performed more efficiently.

  Further, the exterior member 42 is adjusted by adjusting the mounting position of the cap member 44 on the front end side. For example, when the working environment is extremely cold and the nozzle 24 is to be heated as much as possible, The molten wax material can be ejected from the nozzle 24 while the tip end portion 44b is advanced from the nozzle 24 and is wrapped in the high-temperature air ejected by the dryer 13. On the other hand, when the molten wax material sprayed from the nozzle 24 is made into a mist, the tip end portion 42b of the exterior member 42 is positioned near the nozzle 24 (about the state shown in FIG. Along with the high-temperature air to be ejected, it can be ejected (released) in a state of being greatly expanded from the tip end portion 42b. It can also be.

  In addition, the operator grasps the grip portion 21a of the spray gun 12 and holds and supports the tank 11 so as to freely adjust the injection direction of the molten wax material to be sprayed and sprayed from the nozzle 24. The molten wax material can be sprayed onto the surface of the object and applied easily.

  Here, the wax material is generally a paraffin wax derived from petroleum, which is widely used as a material for candles, but is not limited to this, wax derived from animals such as beeswax and whale wax, carnauba wax, Plant-derived waxes such as candelilla wax and wood wax, other petroleum-derived waxes such as microcrystalline wax, synthetic waxes such as Fischer-Tropsch, and other processed / modified waxes may be used.

  This wax material is preferably coated with a member that oxidizes and rusts depending on the environment of use, including structures such as shovels, scoops, and bridges, and the surface of the member is covered with the wax material. By coating and coating with high quality, it is possible to reduce oxidation and limit the spread of rust. Further, when this shovel is used for snow removal or the like, it is possible to restrict the snow from adhering to the surface of the shovel, and the snow removal work can be lightened. Similarly, when an unnecessary object such as a ship bottom adheres, an inconvenient member may be used as an object, and it is possible to avoid a barnacle or the like from adhering to a decrease in propulsive force. And this wax material exists in the state which coat | covers the member surface with solid at normal temperature, but it can be easily melted and removed by heating, and various treatments can be performed without damaging the object. It can be returned to a state where it can be applied, and then it can be easily applied and coated again.

  In addition, after the application | coating operation | work to this object surface is complete | finished, the molten wax material in the tank 11 is pulled out, high pressure air can be ejected from the nozzle 24 by pulling the lever 21b, and an ejection pipe 25 and the like will not remain clogged.

  As described above, in this embodiment, the wax material can be easily heated and melted to form a liquid, and the spray gun 12 is easily operated together with the tank 11 for storing the melted wax material, so that the dryer 13 is swirled. For example, the wax material can be sprayed in the form of a mist and sprayed onto an object such as a shovel to be applied to the high-temperature air ejected in this way, and can be coated as a uniform film with high quality. Therefore, it is possible to prevent the surface of the member such as the shovel from being rusted, to limit the attachment of unnecessary materials, and to improve the durability of the tool such as the shovel. At the same time, it is possible to eliminate or facilitate unnecessary material removal work.

  In addition, as a first other aspect of the present embodiment, the compressed air is supplied from the grip part 21 a side of the gun body 21 to the internal flow path 26 and passed through the upper part of the insertion pipe 22, thereby The molten wax material may be jetted while being sucked into the high-speed gas passing through the upper part of the insertion pipe 22. In this case, the compressed air passing through the upper part of the insertion pipe 22 is heated. It is preferable to use high-temperature air. However, in this case, a device for heating the compressed air is required, which is a large scale. Therefore, when a compact device is desired, it is preferable to design as in the present embodiment.

  Furthermore, as a second other aspect of the present embodiment, in the present embodiment, after the application work on the surface of the object is completed, the molten wax material in the tank 11 is drawn and melted from the inside of the ejection pipe 25 or the like. Work to remove the wax material is required, but by providing a bypass that directly communicates from the pressurized pipe 23 to the plug-in pipe 22, a molten wax material such as the inside of the ejection pipe 25 while the wax material is accommodated in the tank 11. May be ejected from the nozzle 24.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

It is a figure which shows one Embodiment of the coating device which concerns on this invention, and is an external view which shows the schematic whole structure. It is a perspective elevation view which shows the internal structure. It is a see-through | perspective plan view from the upper part which shows the internal structure of the principal part. It is a figure which shows the front-end | tip part of the exterior member which distribute | circulates the high temperature air, (a) is a perspective top view which shows the internal structure, (b) is an AA arrow view which shows the control board installed in the upstream. (C) is a BB arrow line view which shows the control board installed in the downstream. It is a perspective elevation view which shows the structure of the connection location of the exterior member which distribute | circulates the high temperature air, and the tank which stores molten material.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Coating device 11 ... Tank 12 ... Spray gun 13 ... Dryer 14 ... Lid member 14a, 22a ... Heat insulation member 15 ... Heater 17a ... Inner wall member 17b ... Exterior member 21 ... Gun body 21a …… Grip part 21b …… Lever 21c …… Piston valve 22 …… Insertion pipe 23 …… Pressure pipe 23a …… Tip part 24 …… Nozzle 25 …… Injection pipe 26 …… Internal flow path 27 …… Bypass Pipe 28 ... Joint 29 ... Pressure gauge 31 ... Dryer body 31a ... Outlet 33 ... Stay member 34 ... Thumbscrew 42 ... Exterior member 43 ... Heating space 44 ... Cap member 45, 46 ... … Regulator plate 47 …… Inlet plate 48 …… Exit plate G …… Gap S …… Containment space

Claims (4)

A coating apparatus that applies the wax material to the surface of an object by melting and spraying a wax material that is solid at room temperature, such as wax material or paraffin wax,
A melting holding unit that holds a wax material that melts by heating in a liquid molten state, a material injection unit that injects a molten wax material held in a molten state by the melting holding unit, and a high-temperature gas heated to a high temperature And a gas ejection part for ejecting
The melting holding unit includes a tank having a capacity capable of storing and carrying a wax material that is melted by heating,
The material injection unit includes a nozzle that inserts one end side of the material flow path for pumping the molten wax material into the tank of the melt holding unit and sprays the molten wax material in the form of a mist on the other end side of the material flow path. ,
The gas injection section is formed with a gas flow path that blows high temperature gas around the material flow path of the material injection section and ejects it in substantially the same direction as the molten wax material, and material injection located in the hot gas outlet An applicator characterized in that a regulating member that ejects a high-temperature gas blown in the gas flow channel from the periphery of the nozzle in a spiral shape is provided in the gas flow channel.   The coating apparatus according to claim 1, wherein the gas jetting unit is designed such that a hot gas jetting port can be advanced and retracted in a jetting direction of the hot gas with respect to a nozzle of the material jetting unit.   The coating apparatus according to claim 1, wherein the melting and holding unit and the gas jetting unit each have a heating unit so that the heating can be adjusted separately.   The said gas ejection part has an adjustment means which adjusts the conditions which ventilate high temperature gas in a gas flow path, The coating device in any one of Claim 1 to 3 characterized by the above-mentioned.

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