JP2024028135A - painting equipment - Google Patents

Abstract

An object of the present invention is to provide a coating device that can lower the floor height of a coating booth without reducing the ability to capture paint mist compared to conventional techniques. SOLUTION: A painting booth 10 having an upper tank 10a in which painting work is performed and a lower tank 10b disposed below the upper tank, and a filter module that captures paint mist from the air discharged from the lower tank 10b. 3, a front chamber inlet through which air flows from the lower tank 10b, and a front chamber outlet which has an opening higher in height than the opening of the front chamber inlet and through which air flows out to the filter module 3. A chamber 2 is provided. [Selection diagram] Figure 1

Description

The present invention relates to a coating apparatus including a filter unit connected to the side of a lower tank of a coating booth.

In a painting booth that paints objects to be painted, such as car bodies, exhaust gas containing paint mist that has not adhered to the objects to be painted is generated. For this reason, paint booths are equipped with filters to capture paint mist contained in the exhaust gas.

Filter elements made of relatively inexpensive materials such as cardboard are used disposable. Japanese Patent Publication No. 2016-538118 (Patent Document 1) and Japanese Patent Application Publication No. 2014-527462 (Patent Document 2) disclose devices that install disposable filters under the floor of a painting booth. This is because exhaust gas containing paint mist is heavier than air, so it is effective to guide the paint mist under the floor using gravity and trap it there.

Special Publication No. 2016-538118 (or International Publication No. 2015/062976) Special Publication No. 2014-527462 (or International Publication No. 2013/013780)

In Patent Documents 1 and 2, it was necessary to secure a height under the floor of the painting booth to install a filter of an amount sufficient to capture the generated paint mist. As a result, it has become necessary to lift the object to be coated to a level above the floor level.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a coating device that can lower the floor height of a coating booth without reducing the ability to capture paint mist compared to the conventional technology. It is.

The painting apparatus according to the present invention includes a painting booth having an upper tank in which painting work is performed, a lower tank arranged below the upper tank, and a painting booth arranged on the side of the lower tank and discharged from the lower tank. a filter module that captures paint mist from the air, a front chamber inlet that is disposed between the lower tank and the filter module and into which air flows from the lower tank, and an opening of the front chamber inlet. and a front chamber having a front chamber outlet having a high opening for discharging air to the filter module.

According to the present invention, since the front chamber is provided which functions as a space in which the air entering the filter unit from the lower tank of the painting booth is diffused in the vertical direction, the filter unit can be installed on the side of the lower tank and still have sufficient space. A filter with a large capacity can be installed. As a result, the floor height of the painting booth can be lowered without reducing the ability to capture paint mist compared to the prior art.

Further features and advantages of the invention will become clearer from the following description of exemplary and non-limiting embodiments, written with reference to the drawings.

FIG. 1 is a diagram showing a coating device according to a first embodiment. FIG. 6 is a diagram showing movements when attaching and detaching the filter module according to the first embodiment. FIG. 6 is a diagram showing movements when attaching and detaching the filter module according to the first embodiment. FIG. 6 is a diagram showing movements when attaching and detaching the filter module according to the first embodiment. It is a figure showing the usage state of the filter unit concerning a 1st embodiment. FIG. 3 is a partially enlarged view of the filter unit according to the first embodiment. FIG. 3 is a top perspective view showing the arrangement of wheels of the filter module according to the first embodiment. It is a figure showing the usage state of the filter unit concerning a 2nd embodiment. It is a figure showing the state where the filter module concerning a 2nd embodiment was removed.

Embodiments of a coating device according to the present invention will be described with reference to the drawings. In the following, an example in which the coating apparatus according to the present invention is applied to a coating apparatus 100 including a coating booth 10 and a filter unit 1 connected to the coating booth 10 will be described.

[First embodiment]
(Configuration of painting equipment and painting booth)
The coating apparatus 100 includes a coating booth 10, a filter unit 1, an inflow duct 4 (an example of a duct), an exhaust duct 5, and a rail 6. The painting booth 10 includes an upper tank 10a arranged above the grating floor 12 in which painting work is performed by the coating device 11, and a lower tank 10b arranged below the grating floor 12 and connected to the filter unit 1. (Figure 1). A downward airflow is formed in the coating booth 10 from above to below, and air containing paint that has not adhered to the object to be coated is guided from the upper tank 10a to the lower tank 10b.

The painting booth 10 is a so-called low-floor type painting booth, and the height from the surface on which the painting booth 10 is installed to the grating floor 12 is lower than that of a conventional painting booth. Along with this, the height of the lower tank 10b has become lower than in the past. In this embodiment, the height of the lower tank 10b from the floor is 1200 mm. The height of the lower tank 10b can be appropriately set in consideration of circumstances such as the installation location. Note that the dimensions described for other parts are also merely illustrative to aid understanding of the embodiment.

(Filter unit configuration)
A filter unit 1 according to this embodiment includes a front chamber 2 and a filter module 3 (FIG. 1). 2 to 4 show the movement when attaching and detaching the filter module 3 of the filter unit 1, and FIG. 5 shows the state in which the filter unit 1 is used (the state in which the filter module 3 is attached).

Air discharged from the lower tank 10b of the coating booth 10 enters the front chamber 2 via the inflow duct 4 and is then guided to the filter module 3. The paint is adsorbed in the filter module 3 and the purified air is discharged to the outside of the coating apparatus 100 through the discharge duct 5. As described later, the filter module 3 is a box-shaped member that accommodates a plurality of filter elements 31 and a plurality of bag filters 32.

In this embodiment, the height of the lower tank 10b is lower than that of the conventional one. Here, if the height of the filter module 3 is made equal to the height of the lower tank 10b, the number of filter elements 31 installed in the filter module 3 will be reduced compared to the conventional one, and the filtration capacity of the filter module 3 will be insufficient. There is a risk. Therefore, the filter module 3 (particularly the number of filter elements 31) needs to be designed according to the required filtration capacity, regardless of the height of the lower tank 10b. In the configuration in which the lower tank 10b and the filter module 3 whose height is higher than the lower tank 10b are connected, the lower tank 10b and the filter module 3 are not directly connected, but the height of the lower tank 10b and the filter module 3 is A front chamber 2 is provided in the filter unit 1 as a part for adjusting the difference between the two. Note that the front chamber 2 and the filter module 3 may be provided in a one-to-one relationship, or a common front chamber 2 may be provided that is connected to a plurality of filter modules. In the latter case, the front chamber 2 expands in the depth direction of the plane of FIG.

The front chamber 2 has a front chamber inlet 21 through which air flows into the front chamber 2 from the lower tank 10b, and a front chamber outlet 22 through which air flows out from the front chamber 2 to the filter module 3. The front chamber inlet 21 is fixedly connected to the inflow duct 4 . The front chamber outlet 22 is detachably connected to the filter module 3. The front chamber outlet 22 is provided with a door (not shown) that opens and closes the front chamber outlet 22 .

In this embodiment, the height of the opening of the front chamber inlet 21 is 1000 mm, corresponding to the height of the lower tank 10b. The height of the opening of the front chamber outlet 22 is 2000 mm, which corresponds to the height of the filter module 3. That is, the height of the opening of the front chamber inlet 21 is lower than the height of the opening of the front chamber outlet 22.

The distance between the front chamber inlet 21 and the front chamber outlet 22 is 800 mm, which is 40% of the opening height of the front chamber outlet 22. The distance between the front chamber inlet 21 and the front chamber outlet 22 is the length of the front chamber 2 in the direction of air movement. Since the front chamber 2 has a certain length in the air traveling direction, the air that flows into the front chamber 2 from the front chamber inlet 21 has a certain height before flowing out from the front chamber outlet 22 to the filter module 3. Diffusion in direction. Thereby, air can be distributed to a plurality of filter elements 31 provided in the height direction. In a configuration in which the height of the opening of the front chamber outlet 22 is higher than the height of the opening of the front chamber inlet 21, the distance between the front chamber inlet 21 and the front chamber outlet 22 is defined as the front chamber outlet 22. It is preferable to ensure a length of 20% or more of the height of the opening.

The upper edge 23 of the opening of the front chamber inlet 21 is rounded. Further, the lower edge 24 of the opening of the front chamber inlet 21 is provided with an inclined surface. Both of these rounded surfaces and inclined surfaces serve as a guide portion that guides the air flowing into the front chamber 2 from the inflow duct 4 upward. Since the upper edge 23 and the lower edge 24 function as guide portions, the air that has flowed into the front chamber 2 is easily diffused in the height direction.

The filter module 3 is a box-shaped member that accommodates a plurality of filter elements 31 and a plurality of bag filters 32 (FIG. 5). Note that another filter may be provided between the filter element 31 and the bag filter 32. The filter module 3 also has a filter inlet 33 connected to the front chamber 2 and into which air enters, a filter outlet 34 connected to the discharge duct 5 and discharges air from the filter module 3 to the discharge duct 5, and a coating booth 10. It has floor running wheels 35 for running on a floor surface that is one level lower than the surface on which the rails 6 are installed, and rail running wheels 36 for running on the rails 6.

The filter module 3 is detachable from the front chamber 2 . The operation of attaching the filter module 3 to the front chamber 2 is performed by moving the filter module 3 in the direction of the front chamber 2. With this in mind, when referring to the front-rear direction in the following description, the direction in which the filter module 3 approaches the front chamber 2 (the direction from right to left in FIGS. 1 to 5) is defined as "front"; The opposite is defined as "after". Moreover, the position of the filter module 3 when the filter module 3 is installed in the front chamber 2 and the filter unit 1 is in a usable state is referred to as the "installation position."

The filter element 31 is a so-called cardboard filter, and is intended for disposable use. In this embodiment, the filter elements 31 are installed in four stages in the height direction on the side of the filter inlet 33 of the filter module 3. When replacing the filter element 31, with the filter module 3 removed from the front chamber 2, the used filter element 31 is taken out and a new filter element 31 is installed.

The bag filter 32 is, for example, a filter made of olefin fiber. Although the bag filter 32 is also replaced as necessary, its replacement frequency is lower than that of the filter element 31.

The filter inlet 33 is a portion that functions as an inlet for air flowing into the filter module 3 from the coating booth 10 via the front chamber 2, and is provided to open at the front surface of the filter module 3. The filter inlet 33 is aligned with the vestibule outlet 22 of the vestibule 2 when the filter module 3 is in the installed position. In order to airtightly connect the front chamber outlet 22 of the front chamber 2 and the filter inlet 33 of the filter module 3, a packing (not shown) is attached to the edge of the filter inlet 33.

The filter outlet 34 is a portion that functions as an outlet for air discharged from the filter module 3 to the exhaust duct 5, and is provided to open on the upper surface of the filter module 3. The filter outlet 34 is aligned with the exhaust duct 5 when the filter module 3 is in the installed position. The filter outlet 34 is aligned with the exhaust duct 5 by housing the flange 341 provided on the filter outlet 34 in the flange accommodating portion 51 provided on the exhaust duct 5. The flange accommodating portion 51 is arranged, for example, on the first side (right side in FIG. 5) that serves as the entrance and exit of the flange 341, and on the other three sides (the second side on the near side in the paper of FIG. 5, the third side on the left side, and the A flange 341 is accommodated in a groove portion of the C channel material.

Further, when the filter module 3 is in the mounting position, a sealing member seals the first side (right side in FIG. 5) of the flange accommodating portion 51 that accommodates the flange 341, which is the entrance/exit of the flange 341. 342 is provided (FIGS. 5 and 6). The sealing member 342 is provided so as to stand upward from the rear surface of the filter module 3 . When the filter module 3 is pushed into the mounting position, the sealing member 342 comes into contact with the entrance/exit portion of the flange accommodating portion 51. That is, the sealing member 342 seals the connection portion between the filter outlet 34 and the discharge duct 5. By sealing the entrance/exit portion of the flange accommodating portion 51 with the sealing member 342, the degree of pressure reduction of the filter module 3 becomes difficult to decrease.

The floor running wheels 35 are wheels for running on a floor that is one level lower than the surface on which the painting booth 10 is installed, and are provided with two front wheels 35a and two rear wheels 35b each (FIGS. 5 and 7). ). The rail running wheels 36 are wheels for running on the rails 6, and are provided with two front wheels 36a and two rear wheels 36b. A rail contacting portion 361 that is the lower part of the front wheel 36a of the rail running wheel 36 and contacts the rail 6, and a rail contacting portion 362 (FIG. 5) that is the lower part of the rear wheel 36b of the rail running wheel 36 that contacts the rail 6. It is located at the lower part of the floor running wheel 35 and higher than the floor contact part 351 (FIG. 2), and the difference in height between the rail contact parts 361, 362 and the floor contact part 351 is based on the floor surface. The height of the rail 6 is greater than the height of the rail 6.

The arrangement of the floor running wheels 35 and the rail running wheels 36 projected onto a horizontal plane is as shown in FIG. The front wheel 35a of the floor running wheel 35 is provided at a location located inside the rail 6 when the filter module 3 is in the mounting position. The rear wheels 35b of the floor running wheels 35 are provided at the left and right corners of the rear end of the filter module 3. The rail running wheels 36 are provided with a front wheel 36a and a rear wheel 36b spaced apart from each other in accordance with the track of the two rails 6. Further, the front wheel 36a and the rear wheel 36b are arranged biased toward the front of the filter module 3 in the traveling direction of the filter module 3 (to the left in FIG. 7).

The rail 6 is provided so as to extend in a direction away from the front chamber outlet 22 with the front chamber outlet 22 as its base end. The rail 6 has a proximal portion 61 close to the front chamber outlet 22 and a far end portion 62 remote from the front chamber outlet 22 . The height of the proximal end portion 61 from the floor is higher than the height of the distal end portion 62 from the floor. Further, a first inclined portion 63 is provided between the proximal end portion 61 and the distal end portion 62. A second sloped portion 64 is provided that connects the end of the far end portion 62 and the floor surface. Note that, corresponding to the difference in height between the proximal end portion 61 and the distal end portion 62, the height positions of the rail contacting portion of the front wheel 36a and the rail contacting portion of the rear wheel 36b are different.

The function of each part of the rail 6 will be explained along with the procedure for installing the filter module 3. When the filter module 3 is pushed toward the front chamber 2 from the first state (FIG. 2) in which it is completely separated from the filter unit 1, the front wheel 36a of the rail running wheel 36 comes into contact with the first inclined portion 63. At the same time, the rear wheel 36b of the rail running wheel 36 enters a second state (FIG. 3) in which it is in contact with the second inclined portion 64. When the filter module 3 is further pushed, the front wheel 36a and the rear wheel 36b climb the first sloped part 63 and the second sloped part 64, respectively, and rest on the proximal part 61 and the distal part 62, and the flange 341 rises. It enters the third state (FIG. 4) in which it enters the entrance/exit of the flange accommodating portion 51. In the third state, the rail running wheels 36 are placed on the rails 6, so that the floor running wheels 35 are separated from the floor surface. Note that the center of gravity of the filter module 3 exists on the forward side in the direction of travel where the filter element 31 and the bag filter 32 are installed, and the front wheels 36a and the rear wheels 36b are arranged below the center of gravity. The slope portions 63 and 64 can be climbed in a stable posture.

When the filter module 3 is further pushed, the front wheel 36a and the rear wheel 36b run on the proximal portion 61 and the distal portion 62, respectively. This is because the difference in height between the rail contact portion 361 of the front wheel 36a and the rail contact portion 362 of the rear wheel 36b is substantially equal to the difference in height between the proximal end portion 61 and the distal end portion 62. , the filter module 3 can be pushed while keeping the filter module 3 (particularly the flange 341) horizontal. Thereby, the flange 341 can be accommodated in the flange accommodating portion 51 in a correct posture.

Moreover, since both the left and right rail running wheels 36 are guided by the two rails 6, the filter module 3 can be moved straight with respect to the front chamber outlet 22 of the front chamber 2. As a result, the front chamber outlet 22 of the front chamber 2 and the filter inlet 33 of the filter module 3 can be directly opposed, and a fourth state ( Fig. 5) is realized.

Note that when removing the filter module 3, the procedure for attaching the filter module 3 is reversed. That is, the filter module 3 is moved in the order of the fourth state (FIG. 5), the third state (FIG. 4), the second state (FIG. 3), and the first state (FIG. 2).

A frame body 7 is provided as a structure that defines the mounting position of the filter module 3. In this embodiment, the frame body 7 is a frame-shaped member provided surrounding the mounting position of the filter module 3. Furthermore, an engaging pair 71 (71a, 71b) and a regulating member 72 are provided as members for fixing the relative position of the filter module 3 and the frame 7 and fixing the filter module 3 in the mounting position. .

The engagement pair 71 includes an engagement piece 71a attached to the frame 7 and an engagement piece 71b attached to the side surface of the filter module 3, and the engagement piece 71b is inserted into the engagement piece 71a. By engaging with each other, the relative positions of the filter module 3 and the frame body 7 are fixed. The engagement pairs 71 are provided on the left and right sides of the filter module 3 and the frame body 7, respectively. The engagement pair 71 is, for example, a door catch.

The regulating member 72 is a combination of a handle lock provided on the filter module 3 and a lock receiving portion attached to the frame 7. By engaging the handle lock and the lock receiving portion, the filter module 3 in the mounting position is fixed to the frame 7. The regulating members 72 are provided at two rear end portions on the left and right sides of the filter module 3 and on the left and right sides of the frame body 7 corresponding thereto.

Further, a connecting member 73 that connects the rail 6 and the frame body 7 is provided. Since the rail 6 is fixed to the frame 7 via the connecting member 73, it is possible to prevent the rail 6 from bending. Since the connecting member 73 is disposed ahead of the rear wheel 35b (on the left side in FIG. 7) when the filter module 3 moves to the mounting position, it does not come into contact with the rear wheel 35b. Further, since the front wheel 35a runs inside the two rails 6, it does not come into contact with the connecting member 73 when the filter module 3 is installed in the front chamber 2.

[Second embodiment]
A coating apparatus 100A according to the second embodiment includes a rail 6A instead of the rail 6 of the first embodiment (FIGS. 8 and 9). The rail 6A includes a main rail 65 that extends from the front chamber outlet 22 of the front chamber 2 as a base end in a direction away from the front chamber outlet 22, and an extension rail 66 that is detachable from the far end of the main rail 65. has. The main rail 65 is provided at a position corresponding to the rail 6 in the above embodiment, but differs from the rail 6 in the first embodiment in that the height is substantially constant over the entire length.

When using the filter unit 1 with the filter module 3 fixed in the mounting position, the extension rail 66 is not mounted on the main rail 65 and the filter module 3 is mounted on the main rail 65 in the fifth state. (Figure 9). On the other hand, when removing the filter module 3 from the mounting position or installing it in the mounting position, the extension rail 66 is mounted on the main rail 65, and the filter module 3 is moved by running on the main rail 65 and the extension rail 66. (Figure 8).

In this embodiment, the extension rail 66 is provided to ensure a distance for the filter module 3 to travel approximately horizontally at the height when it is in the mounting position, so that the flange 341 can be accommodated in the flange accommodating portion 51 in the correct posture. It is set as. Note that this embodiment does not assume that the filter module 3 is lowered onto the floor, but that the filter element 31 is replaced, etc. in the sixth state (FIG. 8) in which the filter module 3 is pulled out onto the extension rail 66. conduct. An extension rail (not shown) having an inclined portion may be installed in place of the extension rail 66, and the filter module 3 may be lowered to the floor. Further, the filter module 3 pulled out onto the extension rail 66 can be moved along with the extension rail 66 while being placed on the extension rail 66 using a transportation device such as a hand lifter.

[Other embodiments]
Finally, other embodiments of the present invention will be described. Note that the configurations disclosed in each of the embodiments below can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction occurs.

In the above embodiment, the lower tank 10b of the painting booth 10 and the front chamber 2 (front chamber inlet 21) are connected via the inflow duct 4, but the lower tank of the painting booth and the front chamber The configuration may be such that the front chamber inlet is directly connected to the front chamber inlet.

In the embodiment described above, the sealing member 342 is configured to stand upward from the rear surface of the filter module 3, but the sealing member 342 may be attached to the flange accommodating portion 51. In this case, the sealing member 342 can change one side of the flange accommodating portion 51 (the right side in FIG. 5), which serves as the entrance and exit of the flange 341, between an open state and a closed state by swinging or parallel movement.

In the above embodiment, the filter module 3 is configured to be detachable, but the filter module itself may be fixed to the filter unit and only the filter element can be replaced.

Regarding other configurations, it should be understood that the embodiments disclosed in this specification are illustrative in all respects, and the scope of the present invention is not limited thereby. Those skilled in the art will easily understand that modifications can be made as appropriate without departing from the spirit of the present invention. Therefore, other embodiments that are modified without departing from the spirit of the present invention are naturally included within the scope of the present invention.

1: Filter unit 2: Front chamber 21: Front chamber inlet 22: Front chamber outlet 23: Upper edge 24: Lower edge 3: Filter module 10: Painting booth 10b: Lower tank

Claims (5)

A painting booth having an upper tank in which painting work is performed and a lower tank arranged below the upper tank;
a filter module disposed on the side of the lower tank to capture paint mist from the air discharged from the lower tank;
A front chamber inlet is disposed between the lower tank and the filter module, through which air flows from the lower tank, and an opening having a height higher than the opening of the front chamber inlet is provided to flow air into the filter module. A coating device comprising: a front chamber having a front chamber outlet through which the water flows out; The coating apparatus according to claim 1, wherein the distance between the front chamber inlet and the front chamber outlet is 20% or more of the opening height of the front chamber outlet. 3. The coating apparatus according to claim 1, further comprising a guide portion on at least one of an upper edge and a lower edge of the front chamber inlet for guiding air flowing into the front chamber upward. The coating apparatus according to claim 1 or 2, wherein the filter module is configured to be detachable from the front chamber. The coating apparatus according to claim 1, further comprising a duct connecting the lower tank and the front chamber inlet.

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