JPH0434927Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cleaning device for a painting gun, and more specifically, a painting gun is inserted into a cleaning tank equipped with a plurality of cleaning nozzle members, and a cleaning device for cleaning thinner, etc. is supplied from the nozzle members. A flexible cover member is provided that fits over the paint gun and closes the inside of the cleaning tank when the paint gun is sprayed with a solvent, so that the solvent sprayed from the nozzle member leaks to the outside. The present invention relates to a cleaning device for a paint gun, which prevents damage to the paint gun, ensures a suitable environment in the workplace, and avoids damage to the paint gun as much as possible.

Generally, in the automobile industry, painting apparatuses are employed to paint the outer panels of automobile bodies. In this case, the painting equipment has come to be automated in order to correspond to the line production process, and generally, a plurality of painting guns are installed and the painting equipment is connected to the automobile body to be painted. The vehicle body is automatically coated by spraying predetermined paint from the plurality of paint guns while moving the paint guns relatively.

By the way, when a painting operation is continuously performed on an automobile body, the paint sprayed from each painting gun often adheres to the tip of the painting gun, that is, to the nozzle portion. If paint adheres to the nozzle portion, the paint may solidify and block the nozzle portion, making it impossible to spray paint when performing a new painting operation.

Therefore, conventionally, before starting painting work and after finishing painting work, a worker cleans each nozzle part with a brush coated with a solvent such as thinner, and then uses a cloth or the like to clean the nozzle part. The painting gun is cleaned by wiping off the solvent.

However, as mentioned above, since the cleaning work of the painting gun is carried out manually by the operator, cleaning of the painting gun is particularly difficult when a large number of painting guns are installed, such as the automatic painting equipment described above. The disadvantage is that it takes a considerable amount of time to complete the work and imposes a considerable burden on the worker.

For this reason, various cleaning devices have been adopted to automatically clean the coating gun. In this case, the cleaning device basically has a cleaning nozzle disposed inside the casing, and a paint gun is placed inside the casing and a solvent such as thinner is injected from the nozzle. The painting gun is being cleaned.

However, in the above-mentioned conventional technology, when cleaning the painting gun by injecting thinner etc. from the nozzle member within the casing, the mist containing a large amount of the thinner is particularly leaked from the gap between the casing and the painting gun to the outside. It is easy to derive. Therefore, the thinner will be scattered in the workplace, and if this thinner is inhaled, there is a risk of causing extremely serious health problems for the workers.

Therefore, the hole for inserting the paint gun provided in the casing was formed with high accuracy according to the diameter of the paint gun.
It is conceivable to attach the painting gun to this, but in this case, the painting gun must be inserted accurately into the hole. Therefore, the operation control of the painting gun becomes complicated all at once, and even if the position of the painting gun is slightly shifted, the painting gun and the casing come into contact and damage the painting gun. be pointed out.

The present invention has been made in order to overcome the above-mentioned disadvantages, and includes fixing at least two or more flexible cover members to a cleaning tank in which a plurality of cleaning nozzle members are disposed, and A hole portion having a diameter smaller than the diameter of the entrance portion of the coating gun is formed in the member, and a plurality of slits extending in the radial direction are communicated with the hole portion, and each cover member is overlapped so that the respective slits do not overlap. With this configuration, even if the coating gun is misaligned, the coating gun can be reliably exposed to the cleaning tank through the flexible cover member to prevent damage to the coating gun, and the coating gun can be prevented from being damaged. A painting gun that closes the inside of the cleaning tank with the gun and cover member so that the solvent etc. sprayed from the nozzle member does not leak outside, thus making it possible to maintain a good environment in the workplace. The purpose is to provide a cleaning device.

In order to achieve the above object, the present invention involves the nozzle tip of a coating gun entering a cleaning tank, and cleaning fluid is injected from a plurality of cleaning nozzle members disposed in the pre-cleaning tank to clean the nozzles. The cleaning device cleans the tip of the coating gun, and the cleaning tank includes at least two flexible cover members that receive the tip of the nozzle of the coating gun, and the cover members receive the tip of the coating gun. a hole having a diameter smaller than the diameter of the portion, and communicating with the hole a plurality of slits extending in the radial direction at predetermined intervals;
The respective cover members are overlapped so that the respective slits do not overlap, and when the painting gun is fitted into the hole, the painting gun and the cover member shut off the inside and outside of the cleaning tank so that the nozzle member can be removed from the nozzle member. It is characterized in that it is configured to prevent the cleaning fluid to be injected from leaking to the outside of the cleaning tank.

Next, preferred embodiments of the paint gun cleaning device according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates an automobile painting line, and this painting line 10 is divided into a first stage 10a and a second stage 1 according to the work process.
0b, a third stage 10c and a fourth stage 10d. In this case, the cleaning device 12 according to the present invention is placed on the third stage 10c.

In the first stage 10a, the engine compartment and trunk compartment of the vehicle body 14 are painted. That is, rail parts 16a and 16b are arranged on both sides of the first stage 10a, and painting robots 18a to 18d are installed on these rail parts 16a and 16b.
are arranged so that they can be moved freely. Also, the first stage 1
A bonnet opening/closing mechanism 20 and a trunk opening/closing mechanism 22 are provided at 0a. Note that a vehicle body transport mechanism 24 is provided in the center of the painting line 10 from the first stage 10a to the fourth stage 10d.

In the second stage 10b, the inner surface of the door of the vehicle body 14 and the like are painted. In this case, rail sections 26a and 26b are provided on both sides of the second stage 10b, and painting robots 28a and 28b are movably arranged on these rail sections 26a and 26b. In addition, the vehicle body transport mechanism 24 and the rail portion 26a,
26b, there are further rail parts 30a, 30b.
are arranged, and door opening/closing mechanisms 32a, 32b are movably arranged on these rail parts 30a, 30b.

Next, at the third stage 10c where the cleaning device 12 according to the present invention is installed, the outer panel portions of the vehicle body 14 including the bonnet, trunk cover, roof, and doors are painted via the painting device 34 installed therein. be exposed. Then, in the fourth stage 10d, the painted vehicle body 14 is dried. In addition, in the first to third stages 10a to 10c, static electricity is applied to the paint and the vehicle body 1, which is the object to be painted, is
It is assumed that electrostatic painting is performed on 4.

Therefore, in FIGS. 1 and 2, the coating device 34 has rail sections 35a and 35b arranged in parallel on both sides of the vehicle body transport mechanism 24, and the rail section 3.
It basically consists of an upper painting mechanism 36 and a left side painting mechanism 38 that run along the rail section 5a, and a right side painting mechanism 40 that runs along the rail section 35b.

The upper painting mechanism 36 includes a casing 42 and a pivot arm 44 relative to the casing 42.
is supported. In this case, the pivot arm 44 is configured to be freely displaceable in the vertical direction, and is also rotatable about the pivot shaft 46 . Further, a horizontal gun arm 48 is held at the end of the swing arm 44, and this horizontal gun arm 48 engages with a cylinder (not shown) provided in the swing arm 44, so that it can be freely displaced in the horizontal direction. A gun support bar 50a is mounted on the horizontal gun arm 48 at a predetermined distance.
50d are held perpendicular to the horizontal gun arm 48. Painting guns 52a to 52d are attached to the lower ends of gun support bars 50a to 50d while being spaced apart from each other by a predetermined distance. Note that nozzles 54a to 54d are provided at the tips of the painting guns 52a to 52d.

Left side painting mechanism 38 and right side painting mechanism 40
is used to paint the left side and right side of the vehicle body 14, and basically has the same configuration. Therefore, the left side painting mechanism 38 will be explained in detail below, and the detailed explanation of the right side painting mechanism 40 will be omitted.

That is, the left side painting mechanism 38
6, the gun arm 5 is operated under the action of an actuator (not shown) provided in the casing 56.
8 is configured to be freely deflectable in the vertical and horizontal directions and swingable between the side surface of the vehicle body 14 and a cleaning mechanism for a side paint gun, which will be described later. gun arm 58
Painting guns 60a to 60d are attached at a predetermined distance apart from each other.
a, 60b and 60d are each configured to be swingable. The coating gun 60c is fixed with its tip oriented horizontally.

Next, the cleaning device 12 according to the present invention will be described in detail below.

As shown in FIGS. 1 and 3, the cleaning device 12 basically includes an upper coating gun cleaning mechanism 62 that cleans the coating guns 52a to 52d constituting the upper coating mechanism 36, and a left side Painting mechanism 38
It also includes side painting gun cleaning mechanisms 64 and 66 that clean the respective painting guns 60a to 60d constituting the right side painting mechanism 40.

In FIG. 3, the upper coating gun cleaning mechanism 62 includes a base 68, and the base 68 has a main body 7.
0 is provided so that it can be raised and lowered and rotated freely. One end of supporting rods 72a, 72b is attached to the upper part of the main body 70, and the rods 72a, 72b
extend horizontally in parallel. Cleaning tanks 74a to 74d are supported by the rods 72a and 72b, and the spacing between the cleaning tanks 74a to 74d is selected in accordance with the coating guns 52a to 52d of the upper coating mechanism 36. In this case, the cleaning tanks 74a to 74d are constructed in the same way, so the cleaning tank 74a will be described in detail below, and the detailed description of the other cleaning tanks 74b to 74d will be omitted.

That is, as shown in FIG. 4 to FIG. 6, the base plate 76 constituting the cleaning tank 74a has rods 72a and 72b engaged therewith.
Support members 78a to 78d are provided for suspending the rods 72a and 72b.
A relatively large circular upper opening 80 is formed in the center of the base plate 76, and a bolt insertion hole 8 is formed near the corner of the base plate 76.
2a to 82d are drilled. Furthermore, the base plate 76 is formed with holes 84a, 84b for inserting pipes.

Therefore, the opening 80 in the base plate 76
Flexible cover members 86a, 86b facing the front are fixed. The flexible cover members 86a and 86b are preferably made of a resin material such as Teflon, and have the same shape. That is, the flexible cover members 86a and 86b are formed relatively thinly, for example, have a thickness of about 1 mm, and have nozzle portions 54a of the painting guns 52a to 52d in the center of each.
Holes 88a and 88b with a diameter smaller than the diameter of 54d
to be drilled. Furthermore, the respective holes 88a, 88b
A plurality of slits 89a and 89b are formed radially outward from the center of the slits 89a and 89b spaced apart by a predetermined distance. Then, the flexible cover member 86 is arranged so that the respective slits 89a and 89b do not overlap.
a and 86b are overlapped and fixed to the base plate 76.

A plurality of support bars 90 are erected at equal intervals so as to surround the opening 80 on the surface of the base plate 76 on which the support members 78a to 78d are provided,
An air blow nozzle member 92 is attached to each of the support bars 90. In this case, the tip of each nozzle member 92 is oriented on the center line of the opening 80 and inclined toward the opening 80.

On the other hand, the nozzle member 9 of the base plate 76
As shown in FIG. 4, one ends of support bars 94a to 94d are fixed to the surface opposite to the surface on which the support bars 94a and 2 are provided at equal intervals so as to surround the opening 80. Cleaning guns 96a to 96d are attached to the other ends of the cleaning guns 96a to 94d. At this time, the nozzle tips 98a to 98d of the cleaning guns 96a to 96d are inclined toward the base plate 76 and are also oriented on the center line of the opening 80. Further, a support bar 100 is provided between support bars 94c and 94d, and this support bar 1
A support bar 102 is attached to the end of 00 in a direction perpendicular thereto, and a cleaning gun 104 is attached to this support bar 102.

As shown in FIG. 7, the cleaning gun 104 includes a rectangular main body 106 and a nozzle tip 108 that bulges outward from the middle portion of the main body 106. As shown in FIG. A first port 110a for solvent supply and a second port 1 for air supply are provided at both ends of the main body 106, respectively.
10b are formed, and respective ports 110a, 1
10b is the first and second passage 112a, 112
Connects to b. On the other hand, the nozzle tip 108 has a small diameter first nozzle 114a and the first nozzle 114.
a second nozzle 1 coaxial with and surrounding a;
14b, and the first nozzle 114a includes a first
The second nozzle 114b communicates with the passage 112a.
communicates with the second passage 112b.

Note that the other cleaning guns 96a to 96d are configured similarly to the cleaning gun 104 described above, and detailed explanation thereof will be omitted.

Therefore, the first port 110a of the cleaning gun 104
and one ends of the first conduits 116 and 118a to 118d are connected to a pair of ports (not shown) of the cleaning guns 96a to 96d, and the first conduits 116
and a conduit 120 at the other end of 118a to 118d.
This conduit 120 is connected to the base plate 76.
After passing through the hole 84b, it is connected to a solvent supply source (not shown). Further, the second pipe lines 122 and 124a to 124d are connected to the second port 110b of the cleaning gun 104 and the other port (not shown) of the cleaning guns 96a to 96d, and the second pipe lines 122 and 124a to 124d are integrated. The pipe 126 is exposed to the outside through the hole 84a and connected to an air supply source (not shown).

Next, the casing 12 is attached to the base plate 76.
8 is removably attached via bolts 130a to 130d. That is, the casing 12
Attachment portion 13 that bulges inward toward one end of 8.
2a to 132d are formed, and the mounting portion 132
Holes 82 of the base plate 76 from a to 132d
Threaded holes 134a to 134 coaxially with a to 82d
d (see Figure 6). Further, a cleaning chamber 136 is defined within the casing 128, and the chamber 136 communicates with a waste liquid and mist outlet 138 having a small diameter at the end of the casing 128.

Cleaning tanks 74a to 7 configured in this way
A conduit 140 is integrally connected to the outlet 138 of 4d, and the conduit 140 is engaged with the main body 70 and is configured to move up and down and rotate integrally with the main body 70. Further, one end portion of a flexible conduit 142 is connected to the conduit 140, and the conduit 14
The other end of 2 is connected to a separation tank 1442. The separation tank 144 is provided with a mist pipe line 146 on its upper side and a waste liquid pipe line 148 on its lower side.
0, and further connected to a waste liquid processing section (not shown).

On the other hand, the cleaning grooves 64 and 66 for the side painting gun are constructed in the same manner, and the cleaning groove 64 for the side painting gun will be described in detail below, and the detailed explanation of the other cleaning groove 66 will be omitted.

That is, the cleaning mechanism 64 includes a base 152, and a support 154 is erected on the base 152. The support columns 154 are provided with holding members 156a to 156d extending horizontally at predetermined height positions, and the cleaning tanks 158a to 158d are connected to the painting guns forming the left side painting mechanism 38 via the holding members 156a to 156d. It is attached correspondingly to 60a to 60d. The cleaning tanks 158b and 158
d is fixed to holding members 156b and 156d, and the other cleaning tanks 158a and 158c are configured to be freely displaceable in the horizontal direction. That is, the pillar 15
cylinder rods 162a, 162b extending horizontally from the cylinders 160a, 160b;
The cleaning tanks 158a and 158c are attached to the cleaning tanks 158a and 158c.

Therefore, the cleaning tanks 158a to 158d are configured in substantially the same manner as the cleaning tank 74a described above, and in this case, the cleaning tanks 158a to 158d are
Support members 166a to 166d are provided on the upper side of the casing 164 that constitutes the support member 16.
Holding members 156b, 1 via 6a to 166d
56d and cylinder rods 162a, 162b
is suspended from. Note that the cleaning tanks 158a to 1
Since the internal configuration of 58d is similar to that of the cleaning tank 74a described above, detailed explanation thereof will be omitted.

Further, a waste liquid and mist extraction pipe line 168 is connected to the lower part of the casing 164 constituting the cleaning tanks 158a to 158d, and each pipe line 168 is connected to a separation tank 172 via a pipe line 170. Similar to the separation tank 144, this separation tank 172 has a mist pipe line 174 and a waste liquid pipe line 17.
6 is connected.

The cleaning device according to the present invention is basically constructed as described above, and its operation and effects will be explained next.

First, the vehicle body 14 is transported to the first stage 10a by the vehicle body transport mechanism 24, and the hood is opened by the bonnet opening/closing mechanism 20, and the trunk cover is opened by the trunk opening/closing mechanism 22.
The engine room and trunk room are painted by painting robots 18a to 18d that travel along the rail sections 16a and 16b. Next, the vehicle body 14 with the bonnet and trunk cover closed by the bonnet opening/closing mechanism 20 and the trunk opening/closing mechanism 22 is conveyed to the second stage 10b by the vehicle body conveying mechanism 24.

In the second stage 10b, the door of the vehicle body 14 is opened by the door opening/closing mechanism 32a, 32b, and the inner surface of the door is painted by the painting robots 28a, 28b running along the rail portions 26a, 26b. Next, the vehicle body 14 whose door is closed by the door opening/closing mechanisms 32a and 32b is transferred to the vehicle body transport mechanism 2.
4 to the third stage 10c.

Therefore, in advance, the painting guns 52a to 52d attached to the upper coating mechanism 36 are arranged to face the front panel of the vehicle body 14, and the coating guns 60a attached to the side coating mechanisms 38, 40 are arranged in advance.
60d to 60d are positioned in accordance with the side shape of the vehicle body 14. Then, while moving the upper painting mechanism 36 in the direction of arrow C along the rail portion 35a, and displacing the swing arm 44 in the vertical direction and rotating it around the swing shaft 46, the paint gun 5
Paint is sprayed from 2a to 52d to paint the upper part of the vehicle body 14 in a striped pattern.

On the other hand, the side painting mechanisms 38 and 40 are connected to the rail portion 35 at a predetermined distance from the upper painting mechanism 36.
a, 35b, and displaces the gun arm 58 in the horizontal direction, spraying paint from each of the painting guns 60a to 60d, and spraying paint onto the vehicle body 14.
Apply striped paint to the sides of the

Next, after displacing the gun arm 58 by a predetermined amount in the vertical direction and setting the angular positions of the painting guns 60a to 60d, both side painting mechanisms 38, 40
along the rail portions 35a, 35b in the opposite direction. At this time, the paint sprayed from the paint guns 60a to 60d is sprayed onto the parts to be painted on the sides of the vehicle body 14, so that the entire side surface of the vehicle body 14 is coated.

In the upper coating mechanism 36, the horizontal gun arm 48 is displaced by a predetermined amount in the horizontal direction, and while the upper coating mechanism 36 is displaced along the rail portion 35a in the opposite direction, the painting guns 52a to 52
The paint is injected onto the upper portion of the vehicle body 14 to be coated via d, and the coating work is completed on the entire surface of the exterior panel of the vehicle body 14.

In this way, the vehicle body 14 that has been painted is transported to the fourth stage 10d via the vehicle body transport mechanism 24, and then subjected to a drying process.

Therefore, after finishing the painting work on the car body 14 in the painting line 10 or before starting the painting work on the car body 14, the respective painting guns 52a to 52d and 60a are cleaned via the cleaning device 12 according to the present invention. The cleaning work from 60d to 60d is performed.

That is, during the painting operation of the vehicle body 14 described above, the upper coating gun cleaning mechanism 62 constituting the cleaning device 12 is connected to the rail portion 35 as shown in FIG.
b, and prevents the cleaning mechanism 62 from interfering with the painting operation of the vehicle body 14. And the painting gun 52a
When performing the cleaning work of 52d to 52d, the main body part 70
After displacing the rods 72a and 72b upward in the vertical direction, the main body portion 70 is rotationally displaced in the direction of the arrow under the driving action of a rotational drive source (not shown) to position the rods 72a and 72b parallel to the horizontal gun arm 48. Then,
Each of the cleaning tanks 74a to 74d is moved to a predetermined cleaning position (see FIGS. 1 and 3).

Next, the rotating arm 44 is displaced vertically downward to open the nozzle portions 54a of the painting guns 52a to 52d.
The cleaning tanks 74a to 74d face the cleaning tanks 74a to 74d. In this case, as shown in FIG.
The nozzle portion 54a of the cleaning tank 74a enters into holes 88a and 88b of flexible cover members 86a and 86b that are attached to the base plate 76 constituting the cleaning tank 74a.

Additionally, a conduit 120 is provided from a solvent supply source (not shown).
A solvent such as thinner is supplied to the pipe 126, and compressed air is supplied to the pipe line 126 from a compressed air supply source (not shown). Therefore, the solvent is supplied from the pipes 116 and 118a to 118d via the pipe 120 to the first port 110a of the cleaning gun 104 and one port (not shown) of the cleaning guns 96a to 96d, and the compressed air is supplied to the pipes 116 and 118a to 118d. 122 and 12
4a to 124d to the second cleaning gun 104.
Port 110b and the cleaning guns 96a-9
6d is supplied to the other port (not shown).

In FIG. 7, the solvent supplied to the first port 110a of the cleaning gun 104 is injected to the outside from the first small-diameter nozzle 114a through the first passage 112a, while the solvent supplied to the first port 110a of the cleaning gun 104 is
The compressed air that has reached the second passage 112b from the second passage 112b is injected to the outside from the second nozzle 114b. Therefore, the solvent and compressed air discharged from the respective nozzles 114a and 114b are supplied to the nozzle section 54a of the coating gun 52a in a mixed state, and the nozzle section 54a is cleaned. At this time, in the other cleaning guns 96a to 96d, a mixed fluid of a solvent such as thinner and compressed air is similarly injected from the respective nozzle tips 98a to 98d, and the nozzle tips 98a to 98d are directed. The cleaning operation of the nozzle portion 54a of the coating gun 52a that is being carried out is completed.

In this way, the nozzle portion 54a of the painting gun 52a
When the cleaning is performed, the paint containing the fluid sprayed from the cleaning guns 96a to 96d and 104, that is, the waste liquid and the mist, are transferred to the pipe line 14 through the outlet 138 provided at the lower part of the casing 128.
0 and pipe 142 to a separation tank 144. In the separation tank 144, the mist is sent to a mist processing section (not shown) via a pipe line 146,
On the other hand, the waste liquid is sent to a waste liquid treatment section (not shown) via the pipe line 148 under the action of the pump 150. Therefore, there is no waste liquid or mist flowing into the workplace, providing the advantage that a good environment within the workplace can be ensured.

Next, the rotating arm 44 is raised to remove the coating gun 52a from the cleaning tank 74a (see the two-dot chain line in FIG. 5), and compressed air is injected from the nozzle member 92 to the nozzle portion 54a through a pipe (not shown). The solvent adhering to this nozzle portion 54a is scattered or evaporated.

Although the cleaning process for the painting gun 52a has been explained in detail above, the cleaning process for the painting gun 52a has been explained in detail.
It is easy to understand that the same thing can be done in d. On the other hand, the painting operations of the painting guns 60a to 60d constituting the both side painting mechanisms 38, 40 will be described in detail below.

That is, in the side painting gun cleaning mechanism 64, the cylinder rods 162a, 162b are displaced in the horizontal direction under the driving action of the cylinders 160a, 160b, and the cleaning tanks 158a, 158c held therein are moved to the painting gun 60a. , 60c. On the other hand, the painting guns 60a, 60b and 60d are oscillated,
The tips of each are positioned so as to be oriented in the horizontal direction (see the two-dot chain line in FIG. 2). Furthermore, gun arm 58
from the side of the vehicle body 14 toward the side painting gun cleaning mechanism 64, and the painting guns 60a to 6
0d to face each of the cleaning tanks 158a to 158d.

Therefore, the left side painting mechanism 38 is attached to the rail portion 35a.
When it is displaced toward the cleaning mechanism 64 side along
Each of the painting guns 60a to 60d is connected to the cleaning tank 1.
The tip portions are inserted into 58a to 158d. Next, in the same manner as the cleaning tank 74a described above, the nozzle portions of the coating guns 60a to 60d entering the respective cleaning tanks 158a to 158d may be cleaned.

Note that each of the painting guns 60a to 60d constituting the right side painting mechanism 40 is similarly automatically cleaned via the side painting gun cleaning mechanism 66.

In this case, according to the present invention, the painting guns 52a to 52d can reliably enter the cleaning tanks 74a to 74d, and the painting guns 52a to 52d can reliably enter the cleaning tanks 74a to 74d.
Solvents such as thinner do not leak to the outside from the cleaning tanks 74a to 74d during the cleaning operations a to 52d. That is, as described above, the holes 88a and 88b are formed in the flexible cover members 86a and 86b.
, and a plurality of slits 89a, 89b communicating with the holes 88a, 88b are formed. Therefore, even if the painting gun 52a deviates from the desired position when displacing the swing arm 44 vertically downward, the nozzle portion 54a of the painting gun 52a expands the slits 89a and 89b to open the respective slits 89a and 89b. This leads to entering the holes 88a and 88b. Therefore, the nozzle portion 54 of the coating gun 52a
a is free from any inconvenience such as damage due to contact with the hard casing 128, and the hole portion 88
It is possible to reliably enter the chamber 136 of the cleaning tank 74a through the slits 89a, 88b and the slits 89a, 89b.

Furthermore, the nozzle part 54a expands the chamber 13 by expanding the holes 88a and 88b, which are formed smaller than the diameter of the nozzle part 54a, through the slits 89a and 89b.
In this case, the slits 89a and 89b are arranged so as not to overlap each other. Therefore, the upper side of the chamber 136 within the casing 128 can be completely closed via the incoming nozzle portion 54a and the flexible cover members 86a, 86b. As a result, the solvent sprayed from the cleaning guns 96a to 96d and 104 does not leak to the outside, and the waste liquid and mist in the chamber 136 are removed from the casing 1.
It will be discharged into the separation tank 144 through the outlet 138 communicating with the end of the tank 28 . In this way, the solvent, e.g., thinner, sprayed during the cleaning operation of the nozzle portion 54a is not leaked into the workplace, so there is no problem that the worker may inhale the thinner and adversely affect his health. This has the effect of making it possible to avoid this and ensure a good environment in the workplace.

As described above, according to the present invention, two or more flexible cover members are attached to a cleaning tank in which a plurality of cleaning guns are disposed, and the portion of the painting gun that is to be cleaned is attached to the cover member. drilling a hole with a diameter smaller than the diameter of the hole, and forming a slit in communication with the hole;
The two or more cover members are arranged so that their respective slits do not overlap. Therefore, when the painting gun faces into the cleaning tank, even if a positional shift occurs between the painting gun and the cleaning tank, the painting gun can be reliably and damaged through the slits communicating with the respective holes. It is possible to enter the cleaning tank while avoiding such problems. Moreover, when the painting gun is placed in the cleaning tank, the flexible cover member and the painting gun can close the cleaning tank, and the solvent etc. sprayed from the cleaning gun will leak into the workplace. It is possible to lead out to a predetermined separation tank etc. without any trouble. Therefore, in particular, it is possible to avoid the danger that solvents, such as thinners, etc. may enter the workplace and cause serious health problems for workers, and it is possible to ensure a good environment in the workplace. This gives you the advantage of being able to.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to these embodiments, and various improvements and changes in design are possible without departing from the gist of the present invention. Of course.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a painting line system incorporating a cleaning device according to the present invention, Fig. 2 is a side view of a coating equipment cleaned by the cleaning device according to the present invention, and Fig. 3 is a cleaning device according to the present invention. FIG. 4 is an exploded perspective view of a cleaning tank constituting the cleaning device according to the present invention, and FIG. 5 is a longitudinal sectional view of the cleaning tank constituting the cleaning device according to the present invention. , FIG. 6 is a sectional view taken along the line -- in FIG. 5, and FIG. 7 is a partially omitted longitudinal sectional view of a cleaning gun constituting the cleaning device according to the present invention. 10...Painting line, 12...Cleaning device, 14
...Vehicle body, 34...Painting equipment, 62, 64, 66
...Cleaning mechanism, 74a-74d...Cleaning tank, 76
... Base plate, 84a, 84b ... Hole,
86a, 86b...Flexible cover member, 88a,
88b...hole, 89a, 89b...slit,
96a-96d...Cleaning gun, 98a-98d...
...Nozzle tip, 104...Cleaning gun, 116,
118a-118d, 120, 122, 124a
~124d...Pipeline, 128...Casing, 1
38... Outlet.

Claims (1)

[Claims for Utility Model Registration] (1) The nozzle tip of a painting gun is brought into a cleaning tank and cleaning fluid is injected from a plurality of cleaning nozzle members disposed in the pre-cleaning tank so that the nozzle tip The cleaning tank includes at least two flexible cover members for receiving the nozzle tip of the coating gun, and the cover member is a cleaning device for cleaning a portion into which the coating gun enters. a hole having a diameter smaller than the diameter of the hole, a plurality of slits extending in the radial direction at predetermined intervals are communicated with the hole, and each cover member is overlapped so that the slits do not overlap. When the painting gun is fitted into the hole, the painting gun and the cover member shut off the inside and outside of the cleaning tank, so that the cleaning fluid injected from the nozzle part leaks to the outside of the cleaning tank. A cleaning device for a painting gun, characterized in that it is configured to prevent. (2) Utility Model Registration Scope of Claim 1. The apparatus for cleaning a paint gun, wherein the cover member is made of a resin material having excellent corrosion resistance against cleaning fluid.