JPH0529101Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a masking device for painting, and more specifically to a device suitable for masking during painting of automobile bodies and the like.

[Conventional technology]

Automobile body painting generally consists of a base coat, intermediate coat, and top coat. In addition to the above-mentioned undercoating, body sealing and chip-resistant coatings are applied to areas where rust is likely to occur, such as the lower plate.

In each of these painting steps, a masking method is adopted depending on the painting style, and painting is applied only to desired areas.

Conventionally, masking during painting is done using tape, etc. when the object to be coated is dipped in the paint, such as in electrodeposition painting, and masking materials such as tape or patch plates are used when spray painting. I was going.

In addition, for masking in the latter case of spray painting, the sheet is pulled out from a rolled roll of vinyl sheet, and the sheet is wrapped around a shaft and brought into contact with the object to be coated, thereby shielding the masking area. After painting, the shaft is separated from the object to be coated, the used vinyl sheet is rolled up, and the unused vinyl sheet is pulled out from the roll and wrapped around the shaft, allowing the next object to be coated or the same object to be coated. There is also a method of painting different parts of the object.

This method has the advantage that it does not require the work of peeling off the tape or removing the patch plate after painting, unlike the above-mentioned tapes and patch plates, and the painting can be done continuously.

[The problem that the idea attempts to solve]

However, with the above conventional method, when the masked vinyl sheet is removed from the object to be coated after painting, roughness occurs on the coating film at the contact area between the sheet and the object to be coated, resulting in poor coating. Ta.

In addition, when changing the object to be coated or the area to be painted, the sheet must be rolled up after each coating in order to prevent the previously applied paint from adhering to the new object or area to be painted. When applying a different paint to an object to be coated, it is necessary to use a new sheet, which is extremely time-consuming and consumes a large amount of sheets.

Furthermore, since the shaft around which the vinyl sheet was wrapped directly abutted against the object to be coated, the object to be coated could be damaged.

The present invention was developed to solve these problems, and its purpose is to eliminate the trouble of winding up the sheet for each painting and each paint, and to mask without leaving any roughness on the paint film. It is an object of the present invention to provide a coating masking device that can be used.

[Means to solve the problem]

In order to achieve the above object, the painting masking device of the present invention relates to a masking device for spray painting an object from the side, and is rotatable to both the left and right sides of a support stand. two arms suspended from a shaft, a shaft installed between the ends of the two arms, two mounting members each attached to the surface of the end of the arm on the side of the object to be coated, and a space between these mounting members. a contact member consisting of an abutment shaft made of a built-up rubber elastic body; a supply roll around which an unused masking sheet is wound; a take-up roll around which a used masking sheet is wound; and the two arms. a drive mechanism that rotates the masking sheet to move forward and backward relative to the object to be coated, and a masking sheet that is wound around the shaft from the supply roll through between the shaft and the abutment shaft, onto the take-up roll. It is characterized by comprising a winding means.

That is, the masking device of the present invention wraps a masking sheet around a shaft installed between two rotatable arms, and masks the object by moving it forward and backward toward the object to be coated. By installing the abutment shaft consisting of a body between the attachment members at the ends of the two arms at a position closer to the object to be coated, the abutment shaft can come into contact with the masking part of the object during masking. Make sure to come into contact with
The masking sheet itself is passed between the shaft installed between the two arms and the contact shaft, so that it does not come into direct contact with the object to be coated during masking.

The painting masking device of the present invention is configured as described above, and the arm moves according to the masking area of the object to be painted, and the tip of the contact member attached to the arm is brought into contact with the object to be painted. to stop the movement of the arm. At this time, a masking sheet extending from the supply roll to the take-up roll via the shaft is located behind the contact member, and a desired portion of the object to be coated is masked by the masking sheet. Additionally, the coating machine is installed either integrally with this device or separately from this device under the masking area of this device using the masking sheet, and painting is performed, so that the portion of the object to be coated that is covered by the masking sheet is coated. is not performed.

In the device of the present invention, each arm may be composed of a single arm, but each arm may be composed of a plurality of arms connected together; in the latter case, the movement of the entire arm becomes more complicated. I can do it.

Further, the rubber elastic body used for the abutment shaft is not particularly limited as long as it does not damage the object to be coated when it comes into contact with the object.

Furthermore, the masking sheet may be anything that can mask the paint used for painting.
In the case of painting the body of an automobile, for example, a vinyl sheet or the like is used.

[Operation] The coating masking device of the present invention is activated when the object to be coated is transported to the front of the device and painting begins, and at least the tip of the device located at the frontmost part of the device is removed from the elastic body. A contact member first contacts the object to be coated, thereby positioning the masking device, and then a shield for masking is provided by a masking sheet wrapped around a shaft located at a distance behind the contact member. A section is formed so that masking for painting can be performed. Therefore, the masking sheet does not come into direct contact with the object to be coated, and therefore, even after painting, the coating film does not become rough.

Further, according to the apparatus of the present invention, since the masking sheet does not touch the object to be coated, there is no need to wind up the masking sheet for each object to be coated or for each paint.

Furthermore, since the portion of the contact member that directly contacts the object to be coated is made of a rubber elastic body, the object to be coated will not be damaged.

〔Example〕

Next, the present invention will be explained based on examples.
The present invention is not limited to this.

1 to 4 show an embodiment of the coating masking device of the present invention and a coating apparatus equipped with the device, and will be described below with reference to this device.

First, the masking device consists of a masking arm 3 consisting of two arms each attached to both ends of a horizontal shaft 2 installed on support stands 1 provided on the left and right sides, a shaft 4 installed between the tips of these arms, The arm 3
A contact member 5 attached to the shaft 4, a supply roll 7 for supplying the unused vinyl sheet 6 to the shaft 4, and a supply roll 7 for supplying the vinyl sheet 6 from the supply roll 7 to the shaft 4, and then wrapping the used vinyl sheet 8 around the shaft 4. It is roughly composed of a take-up roll 9 for winding up. Here, the abutment member 5 is connected to the arm 32 of the masking arm 3.
It is composed of a mounting member 51 installed at the tip of each of the mounting members 51, and an abutment shaft 52 made of a normal rubber elastic body installed parallel to the shaft 4 between the mounting members 51. A coating gun 20 and its driving device 23 are housed below the arm 3 between the left and right support stands 1, constituting a coating device.

This coating apparatus is used to actually coat the object to be coated 22, here the lower plate of the body of an automobile.

First, when the object 22 to be coated is placed on the carrier 26 and transported in front of the coating device, the masking arm 3
The bending and stretching movement causes the abutment shaft 52, which is installed on the attachment member 51 installed at the tip thereof, to come into contact with the surface of the object to be coated 12.

Here, the masking arm 3 is composed of two arms 31 and 32 as described above, the arm 31 is attached to the horizontal shaft 2, and the arm 32 is connected to the tip of the arm 31. The arm 31 is rotated by the rotation of the horizontal shaft 2 by the masking arm drive device 10, and the arm cylinder 11 connected to the connecting portion of the arms 31 and 32 is driven.
By rotating the arm 32, the masking arm 3 can move up and down and back and forth. By such movement of the masking arm 3, the abutting shaft 52 of the abutting member 5 can be brought into contact with a desired position on the surface of the object 22.

On the other hand, behind this abutment member 5, an unused vinyl sheet 6 supplied from the supply roll 7 passes between the shaft 4 and the abutment shaft 52, is wound around the shaft 4, and is then rolled onto a take-up roll. 9, and the portion from this shaft 4 to the take-up roll 9 can be masked.

After the masking device is positioned using the abutment member 5 as described above, paint 21 is sprayed from the paint gun 20 installed below the device. At this time, the paint is conveyed to the coating gun 20 by a paint tube 24, and the paint tube 24 communicates with the outside of the coating apparatus via a piping path 25 buried under the floor. Further, the painting gun 20 needs to be moved depending on the area to be painted, and this is performed by the painting gun driving device 23.

The coating performed as described above is applied only to the desired position of the object 22 because it is tightly masked with the vinyl sheet 6 that is wrapped around the shaft 4 and extends to the take-up roll 9.

Next, another object or part to be coated can be coated by moving the masking arm 3 in the same manner, after setting the shaft 4 and the contact member 5 at desired positions and masking them.

The vinyl sheet 6 does not need to be rolled up and masked with a new one every time the object to be coated or the paint is changed, but it is necessary to roll it up when it becomes dirty to some extent or is partially damaged. This is a cylinder 12 and a ratchet mechanism 13 that interlocks with it.
By winding the used sheet 8 around the winding roll 9, the unused sheet 6 from the supply roll 7 is wound around the shaft 4 again.

[Effect of idea]

As explained in detail above, in the coating masking device of the present invention, since the masking sheet does not directly touch the object to be coated, roughness does not occur on the coating film even after coating.

Further, according to the apparatus of the present invention, there is no need to wind up a masking sheet for each object to be coated or for each paint, so even if the object to be coated or the paint changes, the next coating can be applied immediately. Therefore, the device of the present invention greatly saves the trouble of winding up the masking sheet,
Enables cost reduction.

[Brief description of the drawings]

FIG. 1 is a side view of a coating device equipped with an embodiment of the masking device according to the present invention, and FIG.
3 is a plan view of the masking device shown in FIG. 1, and FIG. 4 is a side view of the masking device shown in the figure.
2 shows a front view of the coating device shown in FIG. 1. FIG. In the figure, 1... Support stand, 3... Masking arm, 4... Shaft, 5... Contact member, 6, 8... Vinyl sheet, 7... Supply roll, 9... Take-up roll, 10... ...Masking arm drive device, 11...
...Arm cylinder, 12, 13... Winding means.

Claims (1)

[Scope of Claim for Utility Model Registration] In a masking device for spray painting an object from the side, there are two arms 3, 3 rotatably suspended on the left and right sides of a support stand, respectively. , a shaft 4 installed between the tips of the two arms 3, 3, two attachment members 51, 51 attached to the object-side surface of the tips of the arms, and a connection between these attachment members 51, 51. A contact member 5 consisting of an abutment shaft 52 made of a rubber elastic body and installed in the supply roll 7 around which an unused masking sheet 6 is wound, and a take-up roll around which the used masking sheet 8 is wound. 9; drive mechanisms 10 and 11 for rotating the two arms 3 and 3 to move them forward and backward relative to the object to be coated;
2 and winding the masking sheet wound around the shaft 4 onto the winding roll 9.