JP3241381U - Filter device and coating device using this filter device - Google Patents

Abstract

A filter device that can be easily attached to and detached from a paint supply container by a simple operation, and a spray gun type coating apparatus in which the filter device is attached to the paint supply container are provided. A sheet-like or mesh-like filter (5) for filtering paint, and a filter holding member (6) provided over the filter and attached together with the filter to a diameter-reduced portion (2c) of a paint supply container (2) by inserting it from an opening. The filter holding member is composed of a central support portion, beam members radially provided from the central support portion, and a filter provided outside the beam member in accordance with the internal shape of the tubular portion, and is contracted. It is composed of a frame member 6c held by the diameter portion and a knob member 6e projecting upward from the central support portion. [Selection drawing] Fig. 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray gun type coating apparatus using a gravity type paint supply container, and to a filter device detachably attached to the paint supply container and to a spray gun type coating apparatus using this filter device.

In a spray gun type coating apparatus using a gravity type paint supply container, it has been proposed to provide a paint filter device in the paint supply container in order to prevent clogging and improve coating quality. In Patent Document 1 below, a paint supply container having a diameter-reduced portion continuing from an opening to a cylindrical portion is configured to be decomposable into a cylindrical portion and a diameter-reduced portion, and a flange provided at the entrance of the diameter-reduced portion is provided at the center. describes a filter device in which a filter made of metal mesh (wire mesh) is attached so as to be replaceable in a state in which the cylindrical portion is removed from the reduced diameter portion.

Japanese Patent Publication No. 2008-520452

A spray gun-type coating device attached to a gravity-type paint supply container is easy to handle and convenient for manual coating, but requires frequent refilling of the paint during operation, and the filter device has a problem. is required to be easily attached to and detached from the paint supply container.

However, in order to attach the metal mesh filter to the paint supply container in the filter device of Patent Document 1, it is necessary to disassemble the paint supply container into the cylindrical portion and the diameter-reduced portion. Moreover, the task of attaching the metal mesh filter to the flange of the diameter-reduced portion itself is not easy.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a filter device that can be easily attached to and removed from a paint supply container by simple operations, and a spray gun type coating apparatus in which this filter device is attached to the paint supply container.

In order to achieve the above object, the invention according to claim 1 of the present application is a filter that is detachably attached to a gravity-type paint supply container having a diameter-reduced portion that is reduced in diameter from an opening into which paint is poured through a cylindrical portion. An apparatus comprising: a sheet-like or net-like filter for filtering paint; and a filter holder which is superimposed on the filter and attached together with the filter to the diameter-reduced portion of the paint supply container by inserting the filter through the opening. a member, wherein the filter holding member includes a central support portion, a beam member radially provided from the central support portion, and an outer side of the beam member adapted to the internal shape of the cylindrical portion. A frame member to which the filter is attached and held by the reduced diameter portion, a knob member projecting upward from the central support portion, and a knob portion attached to the upper end of the knob member. Characterized by

In this case, according to the second aspect of the present invention, the sheet-like filter is a collapsible filter sheet having an outer diameter larger than the inner diameter of the paint supply container, and the filter is placed under the frame member. is sandwiched between the inner side of the cylindrical portion and the outer side of the frame member and bent, inserted into the cylindrical portion together with the frame member, and held by the reduced diameter portion. It is characterized by

Further, according to claim 3 of the present application, the mesh filter is not disposable for one-time use, but can be washed with a solvent such as thinner to remove clogs and used repeatedly. It has the advantage of being easy to work with.

Furthermore, the device according to claim 4 of the present application has the advantage that the attachment and detachment work of the filter while holding the knob is easy by providing a plurality of beam members.

Further, the invention according to claim 5 of the present application is characterized by having a gravity type paint supply container and the filter device according to any one of claims 1 to 4 attached to the paint supply container. It is a coating device that

According to the filter device of claim 1, the filter device is attached to the paint supply container by pinching the grip member with fingers and inserting the filter device into the paint supply container in a state where the frame member is superimposed on the filter. be done. In addition, after passing through the cylindrical portion, the frame member superimposed on the filter clamps the filter in a compressed state between itself and the diameter-reduced portion. The position and posture of the filter device are self-held within the paint supply container without relying on the liner or engagement structure. Therefore, according to the present invention, it is possible to provide a filter device that can be attached to a paint supply container with a simple operation.

In the filter device of claim 2, since the frame member on which the filter is superimposed is frictionally held at a position where the difference in diameter between the tubular portion and the tubular portion adjacent to the tubular portion is small, when the filter holding member is displaced in the paint supply container, The frictional force of the paint supply container is less reduced, and the stability of the posture of the filter device in the paint supply container is enhanced.

In the filter device of claim 3, although the filter is not a one-time disposable filter, there is an advantage in that the filter can be easily attached to the paint supply device.

In the filter device according to claim 4, there is an advantage that the attachment state of the knob member to the beam member is stable, and attachment and detachment work is easy.

According to the invention of claim 5, it is possible to provide a spray gun type coating apparatus in which the filter device can be easily attached to the coating material supply container.

1 is a side view of a painting apparatus in which a filter device according to Embodiment 1 of the present invention is attached to a paint supply container; FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a coating apparatus in which a filter device according to Embodiment 1 of the present invention is attached to a paint supply container, wherein (a) is a plan view of the coating apparatus and (b) is an explanatory diagram of the spraying operation of the coating apparatus; . 1 is a side cross-sectional view of a paint supply container fitted with a filter device according to Embodiment 1 of the present invention; FIG. 4A is a plan view of the filter holding member, and FIG. 4B is a side sectional view of the filter holding member. FIG. 4A is a plan view of the filter, FIG. 4B is a side view of the filter, and FIG. 4C is an illustration of the filter inserted into the paint supply container while being superimposed on the filter holding member. It is a side view of a state. FIG. 8 is an explanatory diagram of a filter device according to Embodiment 2 of the present invention, where (a) is a plan view of a filter holding member and (b) is a side view of the filter holding member; 3 is a perspective view of a filter device according to Embodiment 3 of the present invention; FIG.

Hereinafter, a filter device according to a preferred embodiment of the present invention, a paint supply container equipped with this filter device, and a spray gun type coating device equipped with this paint supply container will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2(a), the coating apparatus 1 includes a spray gun portion 3, a paint supply container 2 attached to the spray gun portion 3, and a filter device attached to the paint supply container 2. 4. A painting apparatus 1 supplies paint supplied from a paint supply container 2 to a spray gun section 3, and the spray gun section 3 atomizes the paint by an air spray method to coat an object to be painted in front. . The spray gun part 3 has a known structure, and the paint supply container 2 has a known structure. is provided, and the paint stored inside is sent to the supply port using gravity. A filter device 4 is detachably attached to the coating material supply container 2 for the purpose of improving coating quality and avoiding troubles such as clogging when coating is performed using the coating apparatus 1 .

The filter device 4 is composed of a diameter-reduced portion 2c of the paint supply container 2, a filter 5, and a filter holding member 6 detachably attaching the filter 5 to the diameter-reduced portion 2c. The filter 5 is in the form of a disk sheet that matches the shape of the inner side of the cylindrical portion (cylindrical portion 2b). The filter 5 of Example 1 uses thin Japanese paper or non-woven fabric using long cellulose fibers. . The filter holding member 6 includes a central support portion 6a, four beam members 6b, 6b, . A frame member 6c held by the diameter-reduced portion 2c and a frame member 6c held by the diameter-reduced portion 2c, and projecting upward from the central support portion 6a. and a pick member 6d provided. Further, a knob portion 6e is attached to the upper end portion of the knob member 6d by screwing a male screw portion 6f provided on the knob member 6d into a female screw portion 6g provided on the knob portion 6e.

As shown in FIG. 3, the paint supply container 2 stores the paint P supplied by pouring from the upper opening 2a, filters the paint P by the filter device 4, and filters the filtered paint P' into the lower part. It is supplied from the supply portion 2e and supplied to the gun body 11 of the spray gun portion 3 shown in FIGS. 1 and 2(a). The filter device 4 filters and removes impurities such as paint particles from the paint P with the fiber structure of the filter 5 while the paint P stored in the cylindrical portion 2b moves to the diameter-reduced portion 2c. To prevent clogging, make the distribution state of components in the coating material P closer to uniformity, and reduce the dispersion of the particles of the atomized coating material P.

As shown in FIGS. 1 and 2(a), the paint supply container 2 is provided with a lid 2h so that the paint will not spill out when the spray gun section 3 is tilted after the paint P is filled. there is The lid 2h is held in the coating material supply container 2 by the frictional force between the sleeve 2i inserted into the opening 2a and the inner wall surface of the opening 2a. The filling of the paint P and the attachment and detachment of the filter device 4 are performed by removing the lid 2h from the opening 2a, as shown in FIG. As shown in FIG. 2(a), the paint supply container 2 is attached to the gun body of the spray gun section 3 by tightening a nut 2d provided rotatably with respect to the supply section 2e to the connecting screw 11e of the gun body 11. 11 is connected. As shown in FIG. 1, the pressurized air pressurized by the air compressor 16 and pressure-regulated by the pressure regulating valve 15 is supplied to the gun body 11 through the air supply port 14 of the gun body 11 .

As shown in FIG. 2(b), the paint P' taken out from the paint supply container 2 flows into the reservoir 18a of the paint nozzle 18 through the supply part 2e. On the other hand, the pressurized air supplied to the air supply port 14 is jetted forward from the flow path 11c in the gun body 11 through the air jet port 18c of the paint nozzle 18. As shown in FIG.

As shown in FIG. 1, a trigger 12 is provided at an intermediate position of the gun body 11 and is rotatable around a rotary shaft 12a. The trigger 12 operates the pressurized air ON/OFF valve 11a and the needle valve 11b of the paint nozzle 18 in two stages. As shown in FIG. 2(b), in the first stage of the operation of the trigger 12, the needle valve 11b of the paint nozzle 18 remains closed, the pressurized air ON/OFF valve 11a is opened, and only the pressurized air is is jetted forward from the air injection port 18c of the paint nozzle 18, and the pressure at the outlet 18b of the paint nozzle 18 is reduced. In the second stage of the trigger 12, the needle valve 11b of the paint nozzle 18 is opened while pressurized air is being injected from the air injection port 18c. As a result, the paint P' in the reservoir 18a is driven by the reduced pressure at the outlet 18b of the paint nozzle 18 and is sucked into the outlet 18b. The paint P' flowing through the outlet 18b of the paint nozzle 18 is mixed with the pressurized air injected from the air injection port 18c, atomized, and injected forward.

An air cap 13 is provided at the tip of the gun body 11 so that its angle and axial position can be adjusted. A pair of square holes 13b are formed in the air cap 13 so as to vertically sandwich the central round hole 13a. In the second stage of operation of the trigger 12, the air sent from the air compressor 16 into the gun body 11 advances to the central round hole 13a to atomize the paint P', and the air advances to the pair of square holes 13b. and air that modulates the spray pattern of the paint P'. The spray pattern of the paint P' is adjusted by blowing the airflow through the square holes 13b against the side of the airflow of the atomized paint P' sprayed forward from the round holes 13a.

As shown in FIG. 1, a paint supply container 2 is equipped with a filter device 4 according to a first embodiment of the present invention. As shown in FIG. 4(b), the filter holding member 6 has a frame member 6c and a knob member 6d. The frame member 6c is superimposed on the filter 5 and inserted downward through the opening 2a. The pick member 6d protrudes from the center of the frame member 6c toward the opening 2a, and can be picked from above through the opening 2a. When the filter device 4 is attached to the coating material supply container 2, the filter device 4 is pushed until the outer circumference of the frame member 6c abuts against the diameter-reduced portion 2c while the knob portion 6e of the knob member 6d of the filter holding member 6 is held. It can be inserted into the paint supply container 2 . On the other hand, when removing the filter device 4 from the paint supply container 2, the filter device 4 can be pulled upward from the paint supply container 2 by inserting a finger into the opening 2a and pinching the knob 6e of the knob member 6d. can.

The filter holding member 6 has four beam members 6b radially extending outward from a plurality of positions outside the central support portion 6a. The beam member 6b is formed in a cross shape that communicates with the frame member 6c at intervals of 90 degrees. For this reason, the filter holding member 6 is constructed with a small number of parts and is lightweight, and does not easily hinder the movement of the paint P within the paint supply container 2 .

As shown in FIG. 3, when the filter device 4 is attached to the paint supply container 2, the filter 5 is placed on the upper surface 2g of the edge surrounding the opening 2a of the paint supply container 2, and the filter holding member is placed on the opening 2a. In this state, the filter holding member 6 is pushed into the opening 2a of the paint supply container 2 from above while holding the knob 6e of the knob 6d. As a result, the edge side 5a of the filter 5 is bent at the outer periphery of the frame member 6c and stands up, as indicated by the dashed line, and comes into sliding contact with the inner peripheral surface of the opening 2a. After the filter holding member 6 smoothly passes through the cylindrical portion 2b integrally with the filter 5 which is in sliding contact with the inner peripheral surface of the paint supply container 2, the filter 5 is bent between the outer periphery of the frame member 6c and the reduced diameter portion 2c. The frame member 6c is frictionally held by the diameter-reduced portion 2c via the filter 5 while the lower portion is pressed against the frame member 6c. As a result, the filter device 4 can be attached to the paint supply container 2 without relying on screws or engaging structures, with a light bite feeling associated with downward pressing. Due to this "state in which the bent portion of the filter 5 is press-contacted", the position and attitude of the filter device 4 are self-held within the paint supply container 2, so even if the paint supply container 2 is subjected to impact or inclination, The filter device 4 is less likely to tilt or topple inside the paint supply container 2. - 特許庁On the other hand, when removing the filter device 4 attached to the paint supply container 2, the finger inserted from the opening 2a of the paint supply container 2 picks up the knob portion 6e of the knob member 6d and pulls it upward to remove the frame member. The pressure contact of the bent portion of the filter 5 by 6c is quickly released, and the filter device 4 (at least the filter holding member 6) can be easily removed upward from the paint supply container 2 with little resistance.

As shown in FIG. 3, the frame member 6c of the filter holding member 6 passes through the cylindrical portion 2b and the paint supply container 2 contracts through the filter 5 at a depth position adjacent to the cylindrical portion 2b of the reduced diameter portion 2c. It is in pressure contact with the diameter portion 2c. For this reason, the frame member 6c presses the filter 5 strongly against the inner wall of the diameter-reduced portion 2c by a wedge effect that pushes the opposing slopes of the diameter-reduction portion 2c outward. Friction retained. The beam member 6b and the frame member 6c are integrally formed by punching out a stainless steel plate, which is an example of a metal plate material, and are capable of coming into contact with the diameter-reduced portion 2c via the filter 5 in an elastically bent state. It is a thing. Therefore, the beam member 6b and the frame member 6c function integrally as a spring member to press the filter 5 against the inner wall surface of the diameter-reduced portion 2c, thereby providing a spring between the frame member 6c and the diameter-reduced portion 2c via the filter 5. increasing the frictional force. That is, in addition to the compression of the filter 5 by the frame member 6c described above, the opposing slopes of the diameter-reduced portion 2c and the elastic deflection of the beam member 6b and the frame member 6c synergistically act to The self-holding force of the posture of the filter device 4 inside is enhanced. As a result, the filter device 4 falls down in the paint supply container 2 when the spray gun section 3 is tilted, and the filter device 4 falls when the lid 2h is opened and the opening 2a is directed downward to collect the paint. It is difficult for the filter device 4 to fall outside or to be displaced in the paint supply container 2 when the spray gun part 3 is hit and an impact is applied.

As shown in FIG. 5B, the filter 5 is bent upward at the outer edge of the frame member 6c of the filter holding member 6, and as shown in FIG. 3, it moves from the opening 2a of the paint supply container 2 to the cylindrical portion 2b. At this time, since the gap between the frame member 6c and the cylindrical portion 2b is narrow, the edge side 5a of the filter 5 is brought into sliding contact with the inner side of the cylindrical portion 2b, and the filter 5 is brought into close contact with the frame member 6c by sliding contact resistance. 6c is guided to the reduced diameter portion 2c. In the reduced diameter portion 2c, as described above, the beam member 6b and the frame member 6c integrally function as a spring member to sandwich the filter 5 between the frame member 6c and the reduced diameter portion 2c.

As shown in FIG. 5( a ), the filter 5 is made of filter paper, which is an example of a sheet-like material that can be freely folded and allows the paint P′ to pass through, into a circle having a diameter larger than that of the frame member 6 c of the filter holding member 6 . Manufactured by cutting. The filter 5 is disposable and is replaced with a new one each time the paint supply container 2 is cleaned. Here, one sheet of filter paper with a thickness of 0.03 mm was used, but the thickness is arbitrary, and a plurality of sheets may be stacked and used.

The filter 5 preferably has a coarse fiber texture to avoid clogging with paint and to not strain out paint material. In order to prevent the filter 5 from releasing lint and fibers into the paint P', the material of the filter 5 may be thin Japanese paper, non-woven fabric using long cellulose fibers, gauze made of chemical fibers, or the like. can.

As the filter 5 is used, various contaminants and paint substances are taken in, and clogging progresses. Therefore, the paint P′ that has passed through the spaces 6h, 6h, 6h, and 6h between the beam members 6b, 6b, 6b, and 6b of the filter 5 becomes difficult to flow into the reservoir 18a of the paint nozzle 18 through the supply portion 2e. The spray pattern of the paint ejected from the air ejection port 18c may become unstable. Therefore, by replacing the filter 5 with a new one each time it is cleaned, the spray pattern of the paint ejected from the air ejection port 18c can be stabilized. In addition, since the used filter 5 has the paint substance penetrating deep into the fiber structure, when it is attempted to be reused after washing, a large amount of washing liquid and time are consumed, and the filter holding member 6 is replaced with the paint supply container. Disposal of the washing liquid of 2 is also a problem. Therefore, it is economically rational to replace the filter 5 with a new one each time it is washed.

As described above, in the coating apparatus 1 of Embodiment 1, the filter 5 or the filter device 4 can be easily attached/detached to/from the paint supply container 2 . Further, the filter 5 is sandwiched between the frame member 6c and the reduced diameter portion 2c in a compressed state, the frame member 6c presses the filter 5 at a height position adjacent to the cylindrical portion 2b, and the frame member 6c and the beam As the frame member 6c presses the filter 5 with the elastic deformation of the member 6b, the frictional force between the frame member 6c and the diameter-reduced portion 2c via the filter 5 is increased, and the filter device 4 is moved to the paint supply container 2. It can be stably held inside. In use, the cover 2h is removed from the paint supply container 2, and the paint P is poured into the paint supply container 2. It passes through the filter 5 between the spaces 6h, 6h, 6h, 6h and is filtered, and part of it becomes the filtered paint P', and as shown in FIG. The paint P accumulates on the lower side, and when it is full, the unfiltered paint P accumulates on the upper portion of the filter 5. - 特許庁In this state, the cover 2h is attached to the paint supply container 2 and the painting work is performed. As the painting operation progresses, as the amount of the paint P' below the filter 5 of the filter device 4 decreases, the paint P above the filter 5 passes through the filter 5 due to gravity and becomes filtered paint P'. , are sequentially supplied to the supply unit 2e for the coating operation. The compressed state of the filter 5 is immediately released by lifting the filter device 4 by pinching the knob portion 6e of the knob member 6d. In addition, there are few structures such as flanges, projections, screw holes, metal meshes, etc., which hinder cleaning inside the coating material supply container 2 after removing the filter device 4 . In addition, since the disposable filter 5 is used and replaced with a new one, cleaning of the filter 5 is unnecessary. Therefore, downtime due to attachment/removal of the filter device 4 and attachment/replacement of the filter 5 can be reduced, and the operation rate of the coating apparatus 1 can be increased.

6(a) and 6(b) show the filter holding member 7 of the second embodiment that constitutes the filter device 4. FIG. In the filter holding member 7 according to the second embodiment, two beam members 7b, 7b are provided at intervals of 180 degrees among the beam members 7b, 7b, . It differs from the first embodiment in that it has a pair of clamping pieces 7h for holding edges 8a, 8a of the filter 8 on its upper surface. Other structures such as the knob member 7d, the knob portion 7e, the male screw portion 7f, and the female screw portion 7g are the same as those of the first embodiment. The clamping pieces 7h, 7h are made by bending a stainless steel plate into a crank shape, and have mounting portions 7i, 7i and clamping portions 7j, 7j. welded on the side. The clamping pieces 7h, 7h hold the folded edge side 8a of the filter 8 in the gaps 6k, 6k between the clamping portions 7j, 7j and the beam members 7b, 7b. Here, it is made difficult for the paint to remain between the clamping pieces 7h, 7h and the beam members 7b, 7b, and the edge sides 8a, 8a of the filter 8 are formed between the clamping portions 7j, 7j of the clamping pieces 7h, 7h and the beam members 7b, 7b. In order to facilitate insertion of the clamping pieces 7h, a large gap is secured between the clamping portions 7j, 7j of the clamping pieces 7h, 7h and the beam members 7b, 7b. However, by elastically pressing the tips of the clamping portions 7j, 7j of the clamping pieces 7h, 7h against the beam members 7b, 7b, the clamping portions 7j, 7j of the clamping pieces 7h, 7h and the beam members 7b, 7b are separated from each other. The edge sides 8a, 8a of the filter 8 may be positively sandwiched.

Example 2 is the same as Example 1 except that clamping pieces 7h, 7h are attached. Therefore, as in the first embodiment, the filter device 4 of the first embodiment can be easily attached to the paint supply container 2 by pinching the knob portion 7e of the knob member 7d. Further, the used filter holding member 7 can be easily removed upward from the paint supply container 2 by pinching the knob 7e with fingers inserted from the opening 2a of the paint supply container 2 of the first embodiment. When the filter holding member 7 is removed, the filter 8 is held by the clamping pieces 7h, 7h, so that the filter 8 is difficult to drop off from the filter holding member 7. As shown in FIG. When the filter holding member 7 is removed upward from the paint supply container 2 of the first embodiment, the filter 8 is less likely to stick to the paint supply container 2 and remain.

FIG. 7 shows a third embodiment, showing a filter holding member 9 and a filter 10 of the filter device according to the third embodiment. A metal mesh is used as the filter 10 in place of the paper filter of Embodiment 1, but other structures, ie, the central support portion 9a, the beam member 9b, the frame member 9c, the knob member 9d, and the knob portion 9e are the same as those of the embodiment. Same as 1 or 2. Alternatively, a net made of synthetic resin may be used as the filter 10 . The wire mesh filter 10 of the third embodiment may be directly welded to the frame member 9c, or may be fixed to the frame member 9c by overlapping the frame member. The fixing position may be above or below the frame member 9c. Methods of this fixing include welding, screwing, crimping, and other known methods.

With this construction, the filter 10 is not disposable like the one in the first or second embodiment, but it has the advantage that the filter device can be easily attached to and detached from the paint supply container.

In each of the above embodiments, the paint supply container has a cylindrical shape, but it may have a rectangular tube shape or other shape. The shape of the frame member of the filter device differs depending on the shape. Although the shape of the reduced diameter portion is shown as a funnel shape, it is not limited to this shape. It suffices if the frame member of the filter holding member inserted from the opening of the paint supply container is held so that no gap is formed between the outer periphery and the diameter-reduced portion. In addition, although four cross-shaped beam members are shown, two, three, or four or more beam members may be used. In short, it is sufficient that the paint can pass through the spaces between the beam members.

According to the present invention according to Embodiments 1, 2 and 3, since the filter device is attached to the paint supply container, the paint is filtered by the filter, clogging of the coating device is prevented, and high-quality coating is possible. It is possible to provide a coating device that is In addition, since the filter device can be easily attached/detached to/from the paint supply container, the time spent on replacing the filter of the coating device can be reduced, the work cost can be reduced, and the coating device can be provided with high productivity. It is something that can be done.

1 Coating device 2 Paint supply container 2a Opening 2b Cylindrical portion 2c Diameter reduction portion 2d Nut 2e Supply portion 2h Lid 2i Sleeve 3 Spray gun 4 Filter devices 5, 8, 10 Filter 5a Edges 6, 7, 9 Filter holding member 6a , 7a, 9a Central support portions 6b, 7b, 9b Beam members 6c, 7c, 9c Frame members 6d, 7d, 9d Knob members 6e, 7e, 9e Knob portion 6f Male screw portion 6g Female screw portion 7f Male screw portion 7g Female screw Part 7h Clamping piece 7i Mounting part 7j Clamping part 7k Gap 11 Gun main body 11a ON/OFF valve 11b Needle valve 12 Trigger 13 Air cap 14 Air supply port 15 Pressure adjusting part 16 Air compressor 18 Paint nozzle 18a Storage part 18b Outlet 18c Air injection mouth

Claims (5)

A filter device detachably attached to a gravity-type paint supply container having a diameter-reduced portion that is reduced in diameter from an opening into which paint is poured through a cylindrical portion,
A sheet-like or net-like filter for filtering paint, and a filter holding member that is superimposed on the filter and attached to the diameter-reduced portion of the paint supply container together with the filter by being inserted through the opening. death,
The filter holding member includes a central support portion, a beam member radially provided from the central support portion, and the filter provided outside the beam member so as to match the internal shape of the cylindrical portion, and the diameter of the filter holding member is reduced. a frame member held by a central support portion; a knob member projecting upward from the central support portion; and a knob portion attached to an upper end portion of the knob member. The sheet-like filter is a collapsible filter sheet having an outer diameter larger than the inner diameter of the coating material supply container. It is sandwiched between the inner side of the portion and the outer side of the frame member, is bent, is inserted into the cylindrical portion together with the frame member, and is held by the diameter-reduced portion, and is disposable. Item 1. The filter device according to item 1. 2. The filter device according to claim 1, wherein said mesh filter is fixed to a frame member and/or a beam member of said filter holding member. 2. The filter device according to claim 1, wherein a plurality of said beam members are provided. A gravity-type paint supply container having a reduced diameter portion, and the filter device according to any one of claims 1 to 4 attached to the reduced diameter portion of the paint supply container, painting equipment.

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