JPH0463164A - Method and device for coating - Google Patents

Abstract

PURPOSE:To improve workability by applying one of the paints and starting the application of the other paint during the coating at an opportune moment when the former paint is not oversprayed. CONSTITUTION:A hard chip coating device 4 is moved in front of a car body 2, and a side sill 2a is coated by a hard chip coating machine 3 in the device 4. When the device 4 reaches the front end of the car body 2, the machine is moved at the rear of the car body 2, and the side sill 2a is coated twice. When the device 4 approaches the front half of a front door 2e, a gate frame 25 begins to move, and a soft chip paint is applied to the area extending from a bonnet 2b to the first half of a roof 2c by a first coating machine 5 provided to the frame 25. The frame 25 is then returned in front of the car body 2, and the soft chip paint is applied to the area extending from the front door 2e to a front fender 2d by a second coating machine 6. Workability is improved in this way.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a coating method for coating two adjacent coating parts of an object at the same station with two types of paints having different properties, and a method for coating the same. Regarding equipment.

(Prior Art) For example, as an example of a coating method for the outer panel of an automobile body, a method is known in which after applying an electrodeposition primer to the surface of the outer panel member, a base coat, an intermediate coat, and a top coat are sequentially applied. The side sill portion of the vehicle body is particularly easily damaged by flying stones, etc., and there is a risk that the intermediate coat or top coat may peel off and cause chipping. Therefore, in the above-mentioned side sill parts, a paint that forms a protective film is sometimes applied before the intermediate coating or top coating as a chipping-resistant measure. After applying the electrodeposited brimer, an undercoat and an intermediate coat are applied, and then a shock-absorbing protective paint with a black appearance is applied to the outer panel members that form the side sills.

(Problems to be Solved by the Invention) As mentioned above, hard chip paint is applied to the side sills of car bodies to form a protective film for the purpose of chipping resistance.
The top of the bonnet, the front fender that connects to this, and the first half of the roof are areas that are relatively susceptible to the effects of flying stones, etc. Therefore, in order to prevent chipping, a soft paint with different properties from the hard chip paint mentioned above is applied to these areas as well. Chip paint may be applied. In this case, the properties of the hard chip paint and the soft chip paint are different, so if you try to paint adjacent areas to be painted with each at the same time, the paints will interfere and mix with each other, causing negative effects on each other. For this reason, it has been impossible to simultaneously coat adjacent painting parts of the object with the hard chip paint and the soft chip paint, resulting in a decrease in work efficiency.

In addition, as mentioned above, the parts to be painted with hard chip paint and soft chip paint are adjacent to each other, and since these paints cannot be applied at the same time, it is necessary to apply each paint separately. The coating devices had to be arranged offset so that they did not interfere with each other, which required a large amount of space in the coating station for applying these paints.

Therefore, the present invention aims to make the two types of paints more efficient when painting two adjacent parts of a painted object using two types of paints with different properties, such as the hard-chip paint and soft-chip paint. The object of the present invention is to improve workability by coating well and to provide a more compact coating device.

(Means for Solving the Problems) In order to solve the above problems, the present invention is characterized by the following configuration.

First, the invention according to the first claim of the present application (hereinafter referred to as the first invention) is to apply two types of paints with different properties to two adjacent painting parts of an object at the same station using respective painting apparatuses. In the painting method, one of the above paints is applied, and the other paint is applied during the painting. It is characterized by what it did.

In addition, the invention related to the second claim hole of the present application (hereinafter referred to as the second invention) is a coating device that coats two adjacent coating parts of an object to be coated with two types of paints having different properties at the same station. A first coating device applies one of the paints, and a second coating device applies the other paint.
The coating devices are capable of reciprocating movement in the direction along the painting surface of the object to be coated, and in the overlapping portion of the coating area by both coating devices in the reciprocating direction, one of the coating devices coats the other coating surface. It is characterized by being installed above the device.

(According to the first invention, two adjacent to each other on the object to be coated)
When painting the painted area with two types of paints with different properties, apply one of the above paints and at the same time,
Since the coating is started at a timing that does not cause overspray of the other coating with the one coating, two types of coatings with different properties are applied to adjacent parts of the object to be coated. This makes it possible to paint at the same time without interfering with each other, and the painting of one paint starts while the other paint is being painted, making it possible to paint these paints efficiently. This makes it possible to shorten the time it takes to complete the application of both paints, thereby improving work efficiency.

Further, according to the second invention, when painting two adjacent painting parts of an object to be painted at the same station with two types of paints having different properties, each part is applied in the direction along the painting surface of the object to be painted. A first coating device and a second coating device, which are capable of reciprocating movement, are arranged such that one of the coating devices is installed above the other coating device at an overlap portion of the area to be coated by the two coating devices in the reciprocating direction. This makes it possible to paint adjacent painting surfaces of the object to be painted without causing these painting devices to interfere with each other, thereby making it possible to significantly reduce the space required for their use.

(Example) Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 to 3, the painting station S is equipped with a hard chip coating method in which a hard chip paint is applied to the side sill portion 2a of the vehicle body 2, which has been carried in and positioned by a shuttle conveyor 1, which is known in the art. The hard chip coating equipment 4, 4 equipped with the hard chip coating machine 3, the first coating machine 5 which applies soft chip paint from the bonnet 2b to the front half of the roof 2C of the vehicle body 2, and the hard chip coating machine 3. A soft chip coating device 7 is provided which has a second coating machine 6.6 for applying soft chip paint to a region from the front fender section 2d of the vehicle body 2 adjacent to the side sill section 2a to the front half of the front door 2e. The hard chip coating device 4 is
A base 8 disposed in the longitudinal direction on both sides of the vehicle body 2, a frame 9 capable of reciprocating in the longitudinal direction on the base 8 along the side sill portion 2a of the vehicle body 2, and this frame 9.
The paint is applied to the side sill portion 2a through a casing 3a of a Bartsch-knob paint sprayer 3 which is provided to be able to move up and down, a drive motor 10 housed in the casing 3a, and a rack and bino-off mechanism 11 driven by the motor 10. It has an arm 12 that can move toward and away from the arm 12, and a painting gun 14 (see FIG. 1) that is not attached to a rotating member 13 that is rotatably supported by the arm 12. A drive motor 15 and a pinion gear 16 rotated by the drive motor 15 are provided below the frame 9, and the base 8
A rack 17 (see FIG. 2) that meshes with the pinion 16 is fixed on one side of the upper surface, and a rack 17 that engages with the pinion 16 is fixed to the drive motor 15.
The frame 9 is reciprocated in the longitudinal direction of the vehicle body 2 along a guide rail 19 fixed on the base 8 by forward and reverse rotation. In addition, in the frame 9,
A pair of guide members 20.20 are disposed in the vertical direction, and a block 21 integrated with the casing 3a is engaged with the guide member 20, and a block 21 is disposed at the upper and lower positions of the guide member 20. Sprocket 21.2
A chain 22 is installed between 1 and 2.
2 is connected to the block 3b (see FIG. 2).

Further, the lower sprocket 21 is rotated in forward and reverse directions by the drive motor 23, thereby causing the casing 3 connected to the chain 22 via the block 3b.
a can be raised and lowered within a predetermined range.

On the other hand, as shown in FIG. 1.3, the soft chip coating device 7 has bases 24, 24 disposed on both sides of the base 8.8 in the vertical tip coating device 4, and
1. A gate-shaped frame 25 that can reciprocate on the base 24 and 24 in the longitudinal direction of the vehicle body 2; The casings 6a, 6a of the second paint sprayer 6.6 are vertically movably installed on the columns 26, 26 on both sides of the frame 25, and are horizontally supported between the columns 26, 26 of the gate-shaped frame 25. and a casing 5a of the first coating machine 5, which is connected to the vehicle body 2 via a drive motor 27 housed in the casing 6a and a rack and pinion mechanism 28 driven by the motor 27. It has an arm 29 that can be moved toward and away from the side surface of the body, and a painting gun 30 that is attached to the tip of the arm 29. The casing 5a also includes a drive motor 3 as shown in FIG.
1 and a crank mechanism 32 driven by the lever member 33, which is movable in the vehicle width direction of the vehicle body 2, and a paint gun 34, 34 is attached to this lever member 33. ing.

And the pillars 26, 26 in the portal frame 25
A drive motor 35 and a pinion gear 36 rotated by the drive motor 35 are provided below each of the bases 24, and a rack 37 (see FIG. 2) that meshes with the pinion 36 is provided on one side of the upper surface of each base 24. The gate-shaped frame 25 is reciprocated in the longitudinal direction of the vehicle body 2 along a guide rail 38 fixedly installed on the base 24 by the forward and reverse rotation of the drive motor 35. There is. Further, guide members 39.39 are arranged in the vertical direction on the gate-shaped frame 25, and the guide members 39 include blocks 40.39 that are integral with the casings 5a and 6a.
41 (see FIG. 2) are engaged with each other, and a chain 43 is installed between sprockets 42 and 42 disposed at the upper and lower sides of the guide member 29. The blocks 40 and 41 are connected to each other. The lower sprocket 42 that has spread is the drive motor 44
It is designed to be rotated forward and backward by the
Gaugings 3a, 6a connected to the chain 43 via blocks 40, 41 are movable up and down within a predetermined range.

Next, the coating process using the coating method of the present invention will be explained.
First, the hard chip coating device 4 is moved toward the front of the vehicle body 2 from the state shown by the solid line in FIG. 2, and the hard chip coating device 3 in the device 4 starts painting the side sill portion 2a. When the device 4 reaches the front end of the vehicle body 2, it is moved back toward the rear of the vehicle body 2, and the side sill portion 2a is coated twice. And the device 4
When it reaches the front half of the front door 2e, the portal frame 25 starts to move, and the first coating machine 5 installed on the frame 25 coats the front half of the roof 2C from the bonnet 2b with soft chip paint. . In this case, the hard chip coating device 4 coats the side sill portion 2a at the rear of the vehicle body 2 from the front door 2e. and,
When the gate-shaped frame 25 completes painting the front half of the roof 2c and is moved back to the front of the vehicle body 2, the second coating machine 6 applies soft chip paint from the front door 2e to the front fender 2d. Ru. At this time, the hard chip coating device 14 is moved toward the front of the vehicle body 2, and the coating device 4 coats the side sill portion 2a from the rear of the vehicle body to the rear of the front door 2e. Therefore, the hard chip coating device 4 and the soft chip coating device 7 are moved at a predetermined interval, so that the hard chip paint and the soft chip paint are applied without interference. .

In this way, two types of paints with different properties, hard chip paint and soft chip paint, can be applied to adjacent parts of the vehicle body 2, ie, the front fender part 2d and the front door 2e, without causing overspray. In addition to being able to paint the front half and the side sill part 2a, the soft chip painting starts while the hard chip painting is in progress, making it possible to efficiently paint these paints and wait until the painting of both paints is completed. As a result, the time required for painting can be shortened, and the work efficiency can be improved.

Moreover, FIG. 4 shows a coating device according to the second invention,
In this device, hard chip coating devices 4', 4' having the same configuration as the first embodiment and capable of reciprocating in the longitudinal direction of the vehicle body 2' along bases 8', 8' are installed. , the base 2 via the support frames 44', 44'
4'24', and a first coating machine 5' for soft chip coating, which is provided on a gate-shaped frame 25' which is movable back and forth along the base 24'=24', and a second coating machine 5'. Soft tip coating equipment 7' with machine 6'', 6'
According to this, the parts adjacent to each other on the vehicle body 2, that is, the side sill parts 2a' to be painted by the hard chip painting device 4' and the side sill parts 2a' to be painted by the soft chip painting device 7' adjacent thereto, are painted. a hard-chip coating device 4' that is movable back and forth in the front-rear direction of the vehicle body 2 when painting a side portion of the vehicle body with hard-chip paint and soft-chip paint having different properties at the same station;
4'' and the soft chip coating device F7' can be moved in the coating direction without interfering with each other, thereby making it possible to significantly reduce the installation space.

(Effect of the invention) As described above, according to the first invention, when painting two adjacent painting parts of an object to be painted with two types of paints having different properties, one of the paints is applied. At the same time, since the coating is started at a timing that does not cause overspray of the other coating with the one coating, adjacent parts of the object to be coated can be coated with two coatings with different properties. It is possible to apply different types of paint at the same time without interfering with each other, and the application of one paint starts while the other paint is being applied, making it possible to efficiently apply these paints. This makes it possible to shorten the coating time until the completion of coating both paints, thereby improving workability.

Further, according to the second invention, when painting two adjacent painting parts of an object to be painted at the same station with two types of paints having different properties, each part is applied in the direction along the painting surface of the object to be painted. A first coating device and a second coating device, which are capable of reciprocating movement, are arranged such that one of the coating devices is installed above the other coating device at an overlap portion of the area to be coated by the two coating devices in the reciprocating direction. This makes it possible to move these coating devices in the coating direction without interfering with each other and coat adjacent coating areas on the object to be coated, thereby significantly saving installation space. can be reduced.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall front view of a coating device according to this embodiment, FIG. 2 is an overall side view of the coating device, and FIG. 3 is a rear view of the coating device. , FIG. 4 is an overall rear view of the coating device according to the second invention. 2...Object to be painted (vehicle body), 2a, 2b, 2c. 2d, 2e...Painted parts (2a...Side sill part,
2b...bonnet, 2c...roof, 2d...
Front fender section, 2e...front door), 4.
4'...first coating device (hard chip coating device), 7
．． 7'...Second coating device (soft chip coating device). Thank you

Claims (2)

[Claims] (1) A method of painting two adjacent painting parts of an object to be painted with two types of paints having different properties at the same station using respective painting devices, in which one of the paints is applied and at the same time, A painting method characterized in that painting is started at a timing that does not cause overspray of the other paint with the one paint during the painting. (2) A coating device that coats two adjacent coating areas on a workpiece at the same station with two types of paints having different properties, the first coating device coating one of the paints and the other coating device. and a second coating device for painting the paint of the object to be coated. A coating device characterized in that one coating device is provided above the other coating device.