JPS62146700A - Method and device for removing paint sludge in truck for coating - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of TjJt, Higashijou] The present invention relates to a method and apparatus for removing paint slag adhering to a painting truck.

[Conventional technology]

Conventionally, when removing paint slag attached to a painting trolley,
Removal devices such as those shown in FIGS. 5 to 7 are used.

In FIGS. 5 to 7, 51 is a shell formed in the shape of a tunnel, and both ends of this shell 51 are open, one of which serves as an inlet 51a, and the other serves as an outlet stb.
It is said that The bottom portion 51C of the shell 51 has a triangular cross section.

In addition, a conveyor 52 is provided at the center of the ceiling of the shell 51 in the longitudinal direction of the shell 51, and at the bottom of the conveyor 52 there is an article support 53 for suspending the painted Jf1 trolley W with paint slag adhering to it. and ropes 54 are suspended one after another. Further, the inlet 51a side of the shell 51 is a shot process 55, and the outlet 51b side is an air blow process 56.

In the shot step 55, four impellers 57 are provided on each side of the outer side of the shell 51, and the projection port 5
8 are opened oppositely into the shell body 51. Each impeller 57 is connected to one end of a chute 59, the other end is connected to a packet conveyor 60, and the lower end thereof is connected to a screw conveyor 6 connected to the bottom 51a of the shell 51.
1 is +[. Then, the steel balls 62 transferred from the screw conveyor 61 to the packet conveyor 60 pass through the chute 59 and are supplied to each impeller 57.
8, the light is projected toward the painting trolley W.

Further, in the air blowing step 56, injection pipes 63 are arranged on both sides of the inside of the shell 51 and near the bottom, and injection ports 63a are formed at appropriate positions at intervals. Furthermore, a supply pipe 64 is arranged outside the shell 5I, one end of which passes through the shell 5I and is connected to the injection pipe 63, and the other end is connected to the compressor 65. and,
When the compressor 55 operates, air is supplied from the supply pipe 64 to the injection pipe 63, and is sprayed from the injection port 63a toward the painting truck W.

When removing paint slag adhering to the painting cart W, the painting cart W is suspended from the rope 54 of the article support 53 on the outside of the shell 51, and the conveyor 52 is moved to the entrance 51a.
The inside of the shell body 51 is transferred from there.

When the painting cart W is transferred to the shot process 55, steel balls 62 are projected onto the painting cart W from the projection port 58 of each impeller 57, as shown in FIG. 6, and the paint slag is gradually removed. be done.

Then, the painting cart W from which paint slag has been removed is transferred to an air blowing process 56. Then, when the painting cart W is transferred to the air blowing process 56, the compressor 65 is activated to cause the injection pipe 63 to flow from the supply pipe 64 as shown in FIG.
Air is supplied to the spray port 63a and is blown toward the painting cart W to blow off and remove the physically attached paint slag.

[Problem that the invention seeks to solve]

However, in such a removal/removal device, although the paint slag adhering to the painting cart W can be sufficiently removed by projecting the steel balls 62, the paint slag physically adhering to the painting cart W can be sufficiently removed after the steel balls 62 are ejected. When using only air blowing, it is not possible to sufficiently remove every corner of the dryer, and paint slag that cannot be removed falls into the drying oven and flies up, causing paint defects such as spots. .

Therefore, this invention was made to solve the above-mentioned problems, and by sequentially providing a steel ball shot process, an air blow upper process, and a shower process from the upstream side to the downstream side of the shell, the physical The objective is to reliably remove paint scum adhering to the surface of the paint and to prevent paint defects such as spots from occurring.

[Means for solving problems]

That is, in the method for removing paint slag from a painting truck according to the present invention, in order to remove paint slag adhering to the painting truck, a steel ball is fired onto the surface of the painting truck to which paint slag has adhered. After removing the paint slag, air is blown onto the surface to physically remove the adhering paint slag, and water is then sprayed onto the surface of the painting trolley to clean it. be.

Regarding the steel ball projection conditions and air blowing conditions of the painting truck, the conventional conditions for removing paint slag from the painting truck can be used as they are, and special conditions can be set. There's no need to do it. In addition, the water injection conditions are a pressure of about 3 to 8 km/cA,
The amount of water is 500 to 150Qj! /min,
The injection time is about 10 seconds to 50 seconds. This cleans away the paint slag that physically adheres to areas, gaps, etc. that are shadowed by the spraying.

Further, the paint slag removing device for a painting truck according to the present invention is a removing device for removing paint slag adhering to a painting truck, and the painting truck is moved to the center of the ceiling of the shell of the removing device. further comprising: a shot means for projecting steel balls onto a painting cart that is transported inside the shell by the transport means from an upstream side to a downstream side of the shell; and an air blow means for blowing air. and a shower means for spraying water.

[Effect]

In this method for removing paint slag from a painting truck, when removing paint slag adhering to the painting truck, the painting truck is transported into the shell by a conveying means. At this time, when the painting truck is transported to the shot means, steel balls are projected from the shot means toward the painting truck to remove paint slag.

In addition, when the painting cart from which paint slag has been removed is transferred to the air blowing means, air is blown from the air blowing means toward the painting cart to remove some of the paint slag that is physically attached to the painting cart. Paint slag is blown away.

Furthermore, when the painting cart from which some paint slag has been removed is transferred to the shower means, water is sprayed from the shower means toward the painting cart, and most of the paint slag that could not be removed by the air blowing means is removed. Paint slag is cleaned and removed.

Then, the painting cart from which paint slag has been removed is transferred to a drying process, water adhering to the painting cart is removed, and the object to be coated is coated.

〔Example〕

EMBODIMENT OF THE INVENTION Hereinafter, embodiments of a method for removing paint slag from a painting truck and a device for removing paint slag according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a paint slag removal device for a painting truck according to the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG.
The figure is a cross-sectional view taken along the m-nt line in Figure 1, and Figure 4 is a cross-sectional view along the line m-nt in Figure 1.
FIG. 3 is a cross-sectional view taken along line IV-IV in the figure.

First, a paint slag removing device according to the present invention will be explained.

In Figures 1 to 4, ■ is a shell formed in the shape of a mountain, and both ends of this shell l are open, one of which is used as an inlet 1a and the other as an outlet lb. ing. The upstream side and central bottom portion 1c of the shell l have a triangular cross section, and the downstream side is flat.

In addition, a conveyor 2 serving as a conveying means is provided in the center of the ceiling of the shell 1 in the longitudinal direction of the shell 1, and a conveyor 2 serving as a conveying means is provided at the bottom of the conveyor 2, on which a painting cart W with paint slag attached is suspended. The support 3 and the row 14 are suspended in sequence, and a part of the article support 3 and the conveyor 2 are covered by a cover 5.

Further, the upstream side of the shell l is a shot process 6, the center is an air blow process, and the downstream side is a shower process.

In the shot step 6, four impellers 9 are provided on each side of the outer side of the shell l, and their projection ports 10 are opened facing into the shell l.

Further, each impeller 9 is connected to one end of a chute 11, and the other end is connected to a packet conveyor 12. Furthermore, a screw conveyor 13 connected to the bottom 1c of the shell 1 is connected to the lower end of the packet conveyor 12, and a hopper 14 is provided on the opposite side.

As a result, the steel balls 15 transferred from the screw conveyor 13 to the packet conveyor 12 pass through the chute 11t and are supplied to each impeller 9 from the projection port 10 to the row 14.
It is designed to be projected toward a painting cart W suspended from.

In addition, in the AirPro 1 process 7, injection pipes 16 are arranged on both sides of the inside of the shell l and near the bottom so as to surround the painting trolley W, and injection ports 16a are provided at appropriate locations at intervals.
is formed. Furthermore, a supply pipe 1 is provided on the outside of the shell l.
7 is disposed, one end of which passes through the shell l and is connected to the injection pipe 16, and the other end is connected to the compressor 18.

As a result, when the compressor 18 operates, the fuel is supplied from the supply pipe 16 to the injection pipe 16, and the injection port 18
The paint is sprayed from a to a painting cart W suspended from the row 14.

In addition, in the shower step 8, spray pipes i and ■ pipes 19 are disposed on both sides of the interior of the shell l and near the bottom so as to surround the painting cart W. Mouth 19a
is formed. Further, the bottom 1c of the shell 1 is a water tank 20 containing cleaning water H, a part of which protrudes the shell 1, and a strainer 21 is provided in the middle of the tank 20.
Clean water Ha is filtered on the protruding side of the water tank 20. A supply pipe 23 having a pump 22 in the middle is disposed outside the shell 1, and one end of the supply pipe 23 is connected to the shell l.
The other end is connected to the protruding side of the water tank 20.

As a result, when the pump 22 is activated, water 1fI2
The cleaning liquid H in 0 is made into cleaning water Ha by the strainer 21, and is supplied from the supply pipe 23 to the spray pipe 19, and the spray nozzle 19a
From there, it is sprayed toward a painting cart W suspended from a rope 4.

Next, a method for removing paint sludge adhering to the painting cart W using the paint sludge removing device configured as described above will be described.

First, the painting cart W on which paint slag has adhered is suspended from the row 14 of the article support 3 on the outside of the shell l, and is transported by the conveyor 2 from the inlet 1a of the shell l toward the outlet 1b. Then, when the painting cart W is transferred to the shot process 6, the screw conveyor 13 is operated as shown in FIG. Steel balls 15 are supplied to the chute 11 and each impeller 9, and are directed from the projection port 10 toward the painting truck W.
The paint slag is gradually removed.

At this time, the steel balls 15 and the removed paint slag fall to the bottom 1c of the shell 1 and are transferred to the hopper 14 section by the screw conveyor 12, and the paint slag is filtered into the hopper 14 section and falls, and the steel balls 15 is supplied to the packet conveyor 12.

Further, when the painting cart W from which paint slag has been removed is transferred to the air blowing process 7, the compressor 18 is activated to supply air from the supply pipe 17 to the injection pipe 16, as shown in FIG. Air is blown from the port 16a toward the painting trolley W being transported while suspended from the rope 4,
Some of the physically attached paint slag is blown away. At this time, the air and the removed paint slag are transferred out of the system from the bottom 1c of the shell (2).

Furthermore, when the painting cart W from which some paint slag has been removed is transferred to the shower step 8, the pump 22 is activated to supply clean water from the water tank 20 to the supply pipe 23, as shown in FIG. Ha is supplied to the spray pipe 19, and clean water Ha is directed from the spray nozzle 19a toward the painting cart W, which is suspended from the rope 4 and transported, at a pressure of 4 to 6 km/cA.
The water is sprayed for 30 seconds at a water amount of 1000 Il/n+in, and most of the paint slag that could not be removed in the air blowing step 7 is washed and removed. At this time, the clean water Ha injected from the spray nozzle 19a flows over the gap and the entire painting cart W, removes most of the physically attached paint slag, falls into the water tank 20, and flows through the strainer 21. The water is filtered and used again for washing as clean water Ha.

As a result, the painting cart W from which paint slag has been removed is transferred to a drying process, water Ha adhering to the painting cart W is removed, and the object to be painted (not shown) is coated.

〔Effect of the invention〕

As explained above, in the present invention, the steel ball shot process, air blow process, and shower process are sequentially provided from the upstream side to the downstream side of the shell, so that the physically attached paint slag is reliably removed by the shower process. There are effects that can be removed.

In addition, in the present invention, by being able to reliably remove paint slag that physically adheres to the painting trolley,
Since paint slag does not fall into the drying oven, it is possible to prevent coating defects such as splat during coating of objects to be coated.

[Brief explanation of drawings]

FIG. 1 is a plan view illustrating a paint slag removing device for a painting truck according to the present invention. FIG. 2 is a sectional view taken along the line G in FIG. 1. FIG. 3 is a sectional view taken along line III--III in FIG. 1. FIG. 4 is a sectional view taken along the line IV--IV in FIG. 1. FIG. 5 is a plan view illustrating a conventional paint slag removal device for a painting truck. FIG. 6 is a sectional view taken along the line Vl--Vl in FIG. 5. FIG. 7 is a sectional view taken along the line ■-■ in FIG. 5. - Shell 2 - Conveyor 3 - Article support 4 - Rope 6 - Shosoto process 7 - Air blowing process 8 - Shower Process 9--Impeller 11...-Chute 12--Packet conveyor 13--Screw conveyor 15--Steel ball 16--111 injection pipe 17-- 1 supply pipe 1! L----1 Spray pipe: Shi0---Water tank ff 2---Pump 23---Supply pipe Applicant Toyota Motor Corporation 6 No. 1
Figure 2 Figure 3 Figure 4 Figure 5-1l-1 τ Figure 6 Figure 7

Claims (2)

[Claims] (1) To remove paint slag adhering to a painting cart, after removing the paint slag by projecting a steel ball onto the surface of the painting cart on which paint slag has adhered, air is blown onto the surface to physically remove the paint slag. A method for removing paint slag from a painting truck, which comprises removing paint slag adhering to the surface of the painting truck, and further cleaning the surface of the painting truck by spraying water on the surface of the painting truck. (2) A removal device for removing paint slag adhering to a painting cart, the shell of this removal device is formed into a tunnel shape with both ends open, and the painting cart is placed in the center of the ceiling of the shell. Further, a shot means for projecting a steel ball onto a painting cart that is transferred into the shell by the conveying means from an upstream side to a downstream side of the shell, and an air blower for blowing air. A method for removing paint slag from a painting truck, characterized by sequentially providing means and a shower means for spraying water.