JP2015160204A - Spray gun device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spray gun device capable of achieving both improvement of uniformity of a coating film and efficiency improvement of a paint work.SOLUTION: A spray gun device includes a spray gun 2 for atomizing and spraying a paint by compressed air, a paint cup 3 for storing the paint to be supplied to the spray gun 2, a compressor 7 for supplying compressed air to the spray gun 2, and a cup heating device 3e for heating at least either of the paint and compressed air, for example, the paint.

Description

  Embodiments described herein relate generally to a spray gun apparatus including a spray gun for painting.

  In general, this type of spray gun is widely used when a paint is uniformly applied to a relatively large area such as a building outdoor wall, a vehicle such as an automobile, and other devices.

  Conventionally, as this type of spray gun, paint is supplied from a paint container such as a paint cup containing paint to the spray gun by gravity, suction, etc., and this paint is sprayed with compressed air at the nozzle and sprayed onto the surface to be coated. Is known (see, for example, Patent Documents 1 and 2).

JP 2008-23465 A JP 2010-5513 A

  However, with such conventional spray guns, when the paint is applied to the vertical surface in summer or winter, if the paint temperature is not an appropriate temperature according to the characteristics of the paint, Etc. occur, and there is a problem that the uniformity of the coating film is reduced. This problem is likely to occur at a time when the temperature of the paint is easily affected, such as in summer or winter.

  For example, in cold regions in winter, when painting outdoors such as at the painting site, the paint is easily cooled by the outside air temperature. The coating process is difficult and the uniformity of the coating film is also reduced.

  Further, since drying of the coated surface after coating of the paint is left to natural drying, it takes time to dry and solidify the coated surface. For this reason, it is easy to generate | occur | produce a coating film, and also the efficiency of a painting operation is low. For example, in the case of applying a plurality of times such as application of a base material, intermediate coating, and finish coating, a natural drying time is required every time the coating material is applied, which further reduces the efficiency of the painting operation.

  Furthermore, since the application surface is slowly dried and solidified after application, foreign matter such as dust is often attached to the application surface and is easily soiled. For this reason, a curing operation such as covering the coated surface with a curing cover or the like is necessary, and the efficiency of the painting operation is further reduced. As a result, the coating cost is increased.

  The problem to be solved by the present invention is to provide a spray gun device capable of improving both the uniformity of the coating film and the efficiency of the painting operation.

  Embodiments include a spray gun that sprays and sprays paint with compressed air, a paint container that contains the paint supplied to the spray gun, a compressor that supplies the compressed air to the spray gun, and the paint and compressed air And a heating device for heating at least one of the above.

  According to this embodiment, it is possible to improve both the uniformity of the coating film and the efficiency of the painting work.

FIG. 3 is a partially cutaway configuration diagram showing the entire first embodiment. The partial notch block diagram which shows the whole 2nd Embodiment. The partial notch block diagram which shows the whole 3rd Embodiment. The partial notch block diagram which shows the whole 4th Embodiment.

  Hereinafter, embodiments will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or an equivalent part in several drawing.

(First embodiment)
FIG. 1 is a configuration diagram showing a part of the entire first embodiment. As shown in FIG. 1, a spray gun apparatus 1 according to the first embodiment includes a spray gun 2, a paint cup 3 that is an example of a paint container, and a compressor 7.

  The spray gun 2 has a gun body 2a having an external appearance similar to a pistol. The gun body 2a includes a main body 2b, a grip 2c, and a trigger 2d, which are similar to a barrel of a pistol.

  A paint nozzle 2e is provided at the front end (the left end in FIG. 1) of the main body 2b. The paint nozzle 2e is provided with a small-diameter paint discharge hole 2f in the substantially central portion of the left side in the figure, and a plurality of small-diameter air discharge holes 2g, 2g,. , And the compressed air (air) is ejected to the outside from the plurality of air ejection holes 2g, 2g,.

  The gun body 2a has a paint flow path (not shown) communicating with the paint discharge hole 2f and an air flow path (not shown) communicating with the plurality of air discharge holes 2g, 2g,. Yes.

  One end of the air flow path extends to the lower end portion of the grip 2c in the drawing and communicates with an air inlet nipple 2h that forms an air introduction portion.

  In addition, the gun body 2a is provided with a paint inlet nipple 2i communicating with the paint flow path in the main body 2b on the upper end of the main body 2b in the figure. A paint outlet pipe 3a of the paint cup 3 is detachably attached to the paint inlet nipple 2i by screw connection or the like.

  The paint outlet pipe 3a is formed so as to communicate with the bottom opening of the cup body 3b. The cup body 3b is constituted by a double can of an inner container 3c for accommodating the paint and an outer container 3d for accommodating the inner container 3c. An example of a heating device is provided between the inner container 3c and the outer container 3d. A cup heating device 3e made of an electric heater or the like is interposed. The cup heating device 3e is provided with an electric heater on substantially the entire outer surface of the inner container 3c, and the inner and outer containers 3c and 3d are provided with opening / closing lids (not shown) to replenish the paint.

  The gun body 2a forms a paint flow path and an air flow path (not shown) in the main body 2b, and the paint flow path communicates with an inner end (not shown) of the paint inlet nipple 2i. A communication part is formed.

  The air flow path has one end communicating with the plurality of air discharge holes 2g, 2g,..., While the other end extends into the grip 2c and communicates with the air inlet nipple 2h. In the middle of the road, an air valve (not shown) for adjusting the air flow rate of the air flow path is interposed.

  The trigger 2d is configured to control the air valve so as to adjust the air flow rate, for example, by pulling a plurality of depths. That is, when the trigger 2d is pulled shallowly, only air is discharged from the air discharge holes 2g, 2g,..., And when the trigger 2d is pulled deeper, the paint is also discharged from the paint discharge hole 2f.

  On the other hand, a paint flow path (not shown) is provided with a needle valve (not shown) coaxially therein. The needle valve is configured to reciprocate in the paint flow passage in the axial direction in accordance with the air pressure in the air flow passage, and the needle valve is moved to the inside of the paint discharge hole 2f by the movement of the pointed end of the needle valve. By controlling the opening degree of the opening, the discharge amount of the paint discharged to the outside from the paint discharge hole 2f is controlled.

  The paint discharge amount can also be adjusted by manually rotating the paint discharge amount adjusting knob 4. Further, by rotating the pattern adjustment knob 5, the spray pattern of the paint sprayed from the paint nozzle 2e to the outside can be adjusted to various shapes such as a circle and an ellipse. The air discharge flow rate can also be adjusted by rotating the air adjustment knob 2j.

  The spray gun 2 configured in this manner removably connects the air inlet nipple 2h to one end of the air hose 6, and the other end of the air hose 6 is connected to the air outlet of the hose connecting portion 7a of the compressor 7. It is detachably connected to the nipple 7b. The hose connection portion 7a includes a manual open / close valve 7c that communicates with a compressed air (air) discharge port (not shown) of the compressor 7 and opens and closes the air discharge port.

  The compressor 7 includes, as a heating device, an air compression mechanism (not shown), an electric motor unit that drives the compression mechanism, and a compressor heating device 8 that heats the air compressed by the air compression mechanism with an electric heater or the like. It is arranged.

  The compressor heating device 8 is electrically connected to a power supply line 9 that supplies power to the electric motor unit via a wiring (not shown). Further, the power supply line 9 is connected to the cup heating device 3e and the temperature controller 10 via a wiring not shown. This wiring may be attached to the air hose 6 and detachably connected to the wiring inside the gun body 2a.

  The temperature controller 10 is arranged in the vicinity of the upper part of the grip 2c of the spray gun 2, and has an on / off power switch for the cup heating device 3e and the compressor heating device 8, and a temperature setting device for setting the heating temperature. Etc. are provided integrally or individually. The temperature setting device may be configured to be controlled in a plurality of temperature regions such as low, medium, and high temperatures, or to be continuously controlled and set.

  Next, the operation of this embodiment will be described.

  First, the power switch of the temperature controller 10 is turned on, and the heating temperature of the air and the paint is set to an appropriate temperature in consideration of the characteristics of the paint and the outside air temperature.

  Then, the heating temperature of the cup heating device 3e and the compressor heating device 8 is controlled to the set temperature.

  Thereafter, when the manual opening / closing valve 7c is manually opened, the air heated to the set temperature and compressed to a predetermined pressure is supplied to the spray gun 2 via the air hose 6.

  Next, when the trigger 2d of the spray gun 2 is, for example, shallow and pulled to the first stage, only air at a required temperature is blown out from the air discharge holes 2g, 2g,.

  Therefore, it is possible to preheat by spraying air of the required temperature and pressure on the painted surface in advance, and to blow off dust and the like on the painted surface by the air jet force.

  Next, when the trigger 2d is deeply pulled to the second stage, the paint heated to a predetermined temperature is discharged from the paint discharge hole 2f, and air of a predetermined pressure discharged from the air discharge holes 2g, 2g,. Sprayed and sprayed on the painted surface.

  For this reason, painting outdoors in winter and painting in cold regions are possible, and the painted surface can be quickly dried and solidified, so that the painting efficiency can be improved. For this reason, it is possible to perform the painting work all year regardless of the season such as winter or summer. For example, a steel roof becomes hot in summer and the like, and a paint having the same temperature as that can be sprayed onto the steel roof.

  In addition, since the paint is also heated at an appropriate temperature according to the characteristics, it can be stretched well, and the unevenness of the coating film can be reduced to improve the uniformity.

  Furthermore, after application of the paint, the solidification of the coated surface can be further accelerated by blowing air of a predetermined temperature and a predetermined pressure onto the coated surface. Thereby, even when applying several times, such as application | coating of a base material, intermediate coating, and finish coating, the coating time per application | coating can be shortened. In addition, it is possible to reduce the curing work on the coated surface after coating, such as covering the curing sheet, installing scaffolding, removing these curing sheets and scaffolds after coating, etc., so that the coating efficiency can be further improved. it can. As a result, cost reduction can be achieved.

  Then, by operating the temperature controller 10, at least one of the cup heating device 3 e and the compressor heating device 8 can be turned on and the other can be turned off. Can be adjusted to an appropriate temperature.

(Second Embodiment)
FIG. 2 is a partially cutaway entire configuration diagram of a spray gun apparatus 1A according to the second embodiment.

  This spray gun apparatus 1A is provided with an air heating apparatus 11 and a two-way valve switching apparatus 12 in the spray gun apparatus 1 according to the first embodiment, while a compressor heating apparatus 8 shown in FIG. It has the main feature in the point which was deleted.

  That is, as shown in FIG. 2, the spray gun apparatus 1A is provided with a second air outlet nipple 7e in the hose connection portion 7a shown in FIG. 1, and a connection detachably connected to the second air outlet nipple 7e. The air heating device 11 is connected via a hose 13.

  The air heating device 11 introduces compressed air (air) from the compressor 7 that does not include the heating device 8 through the hose connecting portion 7a and the connecting hose 13, and forms an air passage that allows ventilation, and this An outer container 11b for accommodating the inner container 11a and a heating device 11c such as an electric heater disposed between the inner container 11a and the outer container 11b are interposed.

  The inner container 11a is formed of a metal having high thermal conductivity such as iron or aluminum, for example, in a spiral tube shape, and an electric heater such as a nichrome wire as a heating device 11c is wound around the inner container 11a. The air which ventilates the ventilation path in 11a is heated. The on / off of the heating device 11c and the heating temperature can be set by the temperature controller 10.

  The air heating device 11 detachably connects one end portion of the third air hose 14 to the air outlet nipple 11d provided in the outer container 11b, and the other end portion of the third air hose 14 is connected to the two-way valve. The switching device 12 is connected to one end of the air inlet side.

  The other end portion on the air inlet side of the switching device 12 is detachably connected to the air outlet nipple 7 b of the hose connection portion 7 a of the compressor 7 via the second air hose 15.

  The switching device 12 has an air outlet side end connected to one end of the fourth air hose 16, and an air inlet nipple 2 h of the spray gun 2 can be attached to and detached from the other end of the fourth air hose 16. It is connected. In addition, the switching device 12 is disposed so as to be able to switch between the air flow path connected to the second air hose 15 and the air flow path from the air heating device 11, and switching to switch between these two flow paths. It has an operation unit 12a. For example, the switching operation unit 12a is configured to slide between the two air flow paths by sliding in the left-right direction in FIG. 2, but by rotating the knob, the two air flows. You may comprise in the dial type which switches a flow path, and it is not limited to the structure.

  Therefore, according to this spray gun apparatus 1A, the unheated air from the compressor 7 and the air heated by the air heating apparatus 11 can be selectively supplied to the spray gun 2.

  For this reason, it is possible to appropriately select non-heated air and heated air according to the outside temperature such as winter and summer, the characteristics of the paint, and the like, and to perform coating under an appropriate temperature condition.

  Moreover, according to this spray gun apparatus 1A, since at least one of a coating material and air can be heated similarly to the spray gun apparatus 1 which concerns on 1st Embodiment shown in FIG. 1, the spray gun apparatus 1 which concerns on embodiment, Similar effects can be obtained.

  Furthermore, according to this spray gun apparatus 1A, since the air from the compressor 7 is heated by the air heating apparatus 11, the conventional compressor 7 which is not equipped with the compressor heating apparatus 8 can be used.

(Third embodiment)
FIG. 3 is a partially cutaway entire configuration diagram of a spray gun apparatus 1B according to the third embodiment.

  The spray gun apparatus 1B has a main feature in that the paint cup 3 as the paint container of the spray gun apparatus 1 according to the first embodiment shown in FIG. The configuration is the same as that of the spray gun apparatus 1 according to the first embodiment.

  The paint tank 20 is composed of, for example, an inner container 20a that contains 10 to 30 liters (liter) of paint and a double can of an outer container 20b that contains the inner container 20a. A tank heating device 20c composed of an electric heater or the like, which is an example of a heating device, is interposed therebetween.

  The tank heating device 20c is provided with an electric heater on almost the entire outer surface of the inner container 20a, and the inner and outer containers 20a and 20b are provided with opening / closing lids (not shown) so that the paint can be replenished.

  A hose connection portion 20e for detachably connecting one end portion (lower end portion in FIG. 3) of the paint hose 21 is provided on the upper end portion of the opening / closing lid 20d. The other end (the upper end in FIG. 3) of the paint hose 21 is detachably connected to the paint inlet nipple 2k of the main body 2b of the spray gun 2, and the inner end of the paint inlet nipple 2k (not shown) is a spray gun. 2 communicates with a paint channel (not shown) in the main body 2b.

  Therefore, also in the third embodiment, the power switch of the temperature controller 10 is turned on, and the air temperature of the compressor 7 and the heating temperature of the paint in the paint tank 20 are appropriately set in consideration of the paint characteristics, the outside air temperature, and the like. Can be set to temperature.

  For this reason, the heating temperatures of the tank heating device 20c and the compressor heating device 8 are each controlled to a set temperature. Thereby, the paint in the paint tank 20 and the air in the compressor 7 are heated to a required temperature.

  Thereafter, when the manual opening / closing valve 7c is manually opened, the air heated to the set temperature and compressed to a predetermined pressure is supplied to the spray gun 2 via the air hose 6.

  Next, when the trigger 2d of the spray gun 2 is, for example, shallow and pulled to the first stage, only air at a required temperature is blown out from the air discharge holes 2g, 2g,.

  Therefore, it is possible to preheat by blowing the air of the required temperature on the painted surface in advance, and to blow away dust and the like on the painted surface by the air injection force.

  Next, when the trigger 2d is deeply pulled to the second stage, the paint heated to a predetermined temperature is discharged to the outside from the paint discharge hole 2f and is discharged to the outside from the air discharge holes 2g, 2g,. The air is sprayed and sprayed on the painted surface.

  For this reason, painting outdoors in winter and painting in cold regions are possible, and the painted surface can be quickly dried and solidified, so that the painting efficiency can be improved. For this reason, as in the first embodiment, the painting operation can be performed throughout the year regardless of the season such as winter or summer. For example, a steel roof becomes hot in summer and the like, and a paint having the same temperature as that can be sprayed onto the steel roof.

  In this case, since the coating material is also heated at an appropriate temperature according to the characteristics, it can be stretched well, and the unevenness of the coating film can be reduced to improve the uniformity.

  Furthermore, after application of the paint, the solidification of the coated surface can be further accelerated by blowing air of a predetermined temperature and a predetermined pressure onto the coated surface. As a result, even in the case of multiple coatings as described above, the coating time per coating can be shortened. Moreover, since the curing work of the coated surface after coating, such as covering of the curing sheet, installation of a scaffold, and removal of these after coating, can be reduced, the coating efficiency can be further improved. As a result, cost reduction can be achieved.

  By operating the temperature controller 10, at least one of the tank heating device 20 c and the compressor heating device 8 can be turned on and the other can be turned off. Depending on the characteristics of the paint and the outside air temperature, the temperature of the paint and the air Can be adjusted to an appropriate temperature.

(Fourth embodiment)
FIG. 4 is a partially cutaway entire configuration diagram of a spray gun apparatus 1C according to the fourth embodiment.

  This spray gun device 1C deletes the compressor heating device 8 and the tank heating device 20c in the spray gun device 1B according to the third embodiment shown in FIG. 3, while the air heating box 30 is placed in the middle of the air hose 6. It is characterized in that a paint heating box 31 is provided in the middle of the paint hose 21 while being provided. The other configuration is substantially the same as that of the spray gun apparatus 1B according to the third embodiment shown in FIG.

  The air heating box 30 is interposed between an inner container 30a communicating with the ventilation path of the air hose 6, a box-shaped outer container 30b for accommodating the inner container 30a, and the inner and outer containers 30a and 30b. An air heating device 30c is provided.

  The inner container 30a is formed in a spiral tube shape with a metal having high thermal conductivity, such as iron or aluminum, and the length of the ventilation path is extended. An electric heater is provided on almost the entire outer peripheral surface of the spiral tube inner container 30a. Winding. However, the inner container 30a may be a straight tube.

  The paint heating box 31 includes an inner container 31a that communicates with the paint flow path of the paint hose 21, a box-shaped outer container 31b that houses the inner container 31a, and the inner and outer containers 31a and 31b. An interposed paint heating device 31c is provided.

  The inner container 31a is formed in a spiral tube shape with a metal having a high thermal conductivity such as iron or aluminum, and the length of the ventilation path is extended. The paint heating device 31c is provided on the substantially entire outer periphery of the spiral tube inner container 31a. An electric heater is wound around the surface. However, the inner container 31a may be a straight tube.

  The air heating box 30 and the paint heating box 31 are respectively connected to power supply lines (not shown) by electrical wirings, and these electrical wirings are respectively connected to the temperature controller 10. By the setting operation, the air heating box 30 and the paint heating box 31 can be turned on / off and the temperature can be set.

  According to the fourth embodiment, the air heating box 30 is provided in advance in the air hose 6 and the paint heating box 31 is provided in the paint hose 21 so that the compressor heating device 8 is not provided. In addition, a conventional paint tank 20 that does not include the tank heating device 20c can be used.

  Moreover, since air can be heated by the air heating box 30, and a coating material can be heated by the coating material heating box 31, it is substantially the same effect as the spray gun apparatus 1,1A, 1B which concerns on the said 1st-3rd embodiment. Can be played.

  In the above embodiment, the temperature at which the heating device of the cup heating device 3e, the compressor heating device 8, the air heating device 11, the tank heating device 20c, the air heating box 30 and the paint heating box 31 is turned on and off is set. Although the case where the operation device 10 is disposed in the spray gun 2 has been described, the present invention is not limited to this. For example, the temperature operation device 10 is not provided in the spray gun 2 and each of the heating devices 3e, 8 is provided. , 11, 20c, 30, 31 may be provided in the vicinity. According to this, the conventional spray gun 2 which is not equipped with the temperature controller 10 can be used.

  Further, a pair of left and right shoulder belts are provided on the paint tank 20 so that the paint tank 20 can be carried on the back of the worker, and the external shape of the paint tank 20 is formed into a suitable shape for carrying on the back. It may be configured to be transportable and portable. Further, the heating device 11c of the air heating device 11 may be replaced with a heat pump type air conditioner so that the air is heated or cooled as necessary. For example, the use side heat exchanger of the air conditioner (not shown) is used as a heating device, and is disposed between the inner container 11a and the outer container 11b of the air heating device 11, and a refrigerant pipe is provided in the use side heat exchanger. An outdoor unit equipped with refrigeration cycle components such as a heat source side heat exchanger and a compressor connected via the air heater 11 may be disposed in the vicinity of the air heating device 11.

  According to this, when the outside air temperature is high such as midsummer, the air from the compressor 7 can be cooled by the use side heat exchanger of the air conditioner, and the paint can be cooled together through this air. That is, by cooling the air from the compressor 7 with the use side heat exchanger of the air conditioner, the moisture in the air blown from the air discharge holes 2g, 2g,. At the same time, moisture can be reduced and dry air with less moisture can be obtained.

  For this purpose, for example, after the air from the compressor 7 is cooled by the use side heat exchanger of the air conditioner, before or after the coating of the paint on the surface to be painted, the trigger 2d is shallowed and pulled to the first stage, and the spray gun By blowing cooling air from the two air discharge holes 2g, 2g,..., Moisture in the blown air can be reduced, and dry air with less moisture can be blown onto the surface to be coated. Thereby, it is possible to accelerate the drying and solidification of the surface to be coated itself or the paint applied thereto.

  Therefore, the cooling of the heat pump system at the time and place containing a lot of moisture and moisture such as in the rainy season can reduce the influence of diluting the paint with water, so it is effective in forming a good quality coating film. .

  In addition, moisture removal is necessary for high-level coating film formation, coating film formation on a vertical surface, and the like. That is, water removal in solvent-based and weak solvent-based paints prevents moisture from being mixed into fats and oils, and water-based dilution can be prevented by further removing excess water.

  In addition, various embodiment and modification are possible for this invention in the range which does not deviate from the summary of this invention. The above-described embodiments are presented as examples for explaining the present invention, and are not intended to limit the scope of the present invention.

  1, 1A, 1B, 1C ... spray gun device, 2 ... spray gun, 3 ... paint cup (paint container), 3c ... inner container, 3d ... outer container, 3e ... cup heating device, 4 ... paint discharge amount adjusting knob, DESCRIPTION OF SYMBOLS 7 ... Compressor, 7c ... Manual on-off valve, 8 ... Compressor heating device, 10 ... Temperature controller, 11 ... Air heating device, 12 ... Switching device, 20 ... Paint tank (paint container), 20a ... Inner container, 20b ... Outside Container, 20c ... Tank heating device, 30 ... Air heating box, 30a ... Inner container, 30b ... Outer container, 30c ... Air heating device, 31 ... Paint heating box, 31a ... Inner container, 31b ... Outer container, 31c ... Paint heating apparatus.

Claims (10)

A spray gun for spraying and spraying paint with compressed air;
A paint container for containing the paint supplied to the spray gun;
A compressor for supplying the compressed air to the spray gun;
A heating device for heating at least one of the paint and compressed air;
A spray gun apparatus characterized by comprising: The spray gun apparatus according to claim 1, wherein a temperature controller for setting on and off of the heating apparatus and a heating temperature is disposed in the spray gun. The paint container includes an inner container that contains the paint, an outer container that contains the inner container, and the heating device that is interposed between the inner container and the outer container to heat the paint. The spray gun apparatus according to claim 1 or 2, wherein the spray gun apparatus is provided. 4. The spray gun apparatus according to claim 3, wherein the paint container is a paint cup that is provided integrally with the spray gun and supplies the paint to the spray gun by gravity. The spray gun device according to claim 1, wherein the paint container is configured to be transportable. An air hose that supplies compressed air from the compressor to the spray gun, a ventilation path that is interposed in the middle of the air supply path of the air hose, and the compressed air is heated through the ventilation path. The spray gun apparatus according to claim 1, further comprising an air heating apparatus having a heating apparatus. One of the compressed air supplied to the spray gun from the second air hose and the air hose of the air heating device has a second air hose for supplying the compressed air from the compressor to the spray gun. The spray gun apparatus according to claim 6, further comprising a switching device that switches between the two. An air hose that supplies compressed air from the compressor to the spray gun, a ventilation path that is interposed in the middle of the air supply path of the air hose, and cools or heats the compressed air through the ventilation path. The spray gun apparatus according to any one of claims 1 to 7, further comprising an air cooling and heating apparatus having a heat pump type air conditioner. The compressor includes a compression mechanism that compresses air, an electric motor unit that drives the compression mechanism, and the heating device that heats the compressed air compressed by the compression mechanism with an electric heater. The spray gun device according to any one of claims 1 to 6. A paint hose for supplying paint from the paint container to the spray gun, a paint supply path interposed so as to communicate with the paint supply path of the paint hose, and heating the paint through the paint supply path The spray gun apparatus according to any one of claims 1 to 9, further comprising a paint heating apparatus having a heating apparatus.

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