JPH055988Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a coating device that applies a paint to a site to be coated, such as a coating device that applies a primer to an automobile window glass.

(Prior Art) Conventionally, when applying paint to the area to be coated, for example, when bonding an automobile window glass, a process of applying a primer to the adhesive-applied surface of the window glass in advance in order to enhance the adhesion effect. is being carried out.

A method using a brush has been widely adopted for the primer application process, but since this method uses a brush, it is difficult to obtain a prescribed width and a constant coating thickness, and the surface of the brush tends to harden, making it difficult to use a brush. Maintenance management was complicated.

In order to solve the above-mentioned problems, the applicant has proposed the device shown in Fig. 6. This device has, for example, a shaft d slidable up and down by being biased by a spring c inside a holder b attached to a robot arm a, a head member g having a paint outlet f for supplying primer to a clevis e provided at the tip of the shaft d, rotatable in the direction perpendicular to the coating direction, and in sliding contact with the window glass X at the rear of the paint outlet f. The head member g is pressed against the window glass X, and primer is supplied from a paint supply pipe h to the front of the head member g in the coating direction from the paint outlet f, and the head member g is slid in the direction of arrow A on the window glass X to spread the primer and form a coating film Y.

When coating is performed at a predetermined coating speed using the head member g having such a configuration, a predetermined width and a constant coating film thickness can be obtained.

However, in order to form a uniform coating thickness, in addition to the structure of the head member g, a means for adjusting the amount of primer supplied in accordance with the coating speed is required, which makes the equipment complicated and Expenses increase.
In addition, in the above method, only a fixed amount of primer is supplied to the front of the head member g in the coating direction even if the coating speed fluctuates, so if the primer supply amount cannot follow the required coating amount and the coating speed increases, the supply amount will decrease. There was a tendency for the supply amount to be insufficient, and when the coating speed was slowed, the supply amount tended to be excessive, causing sagging, fading, etc., and making it impossible to reliably form a uniform coating thickness.

(Problems to be Solved by the Present Invention) The present invention solves such conventional inconveniences by pressing a head member having a paint outlet for supplying paint onto the area to be coated and storing the paint within the head member. While filling, slide the head member over the area to be coated,
A coating device that stably supplies filled and stored primer regardless of fluctuations in coating speed, has a simple structure, is easy to maintain, and can form a predetermined uniform coating thickness. The purpose is to provide

(Means for Solving the Problems) In order to achieve the above object, the present invention is a device for applying paint such as a primer to an area to be coated, and includes a holder attached to a robot arm, etc. , a shaft provided in the holder so as to be slidable in the vertical direction while being biased downward; and a shaft provided at the tip of the shaft so as to be swingable in the coating direction and in a direction perpendicular to the coating direction. a head member having a sliding part that slides into contact with the part to be coated at two places, front and back in the coating direction; a cutout portion provided to define a gap between the head member, a paint outlet port provided between the sliding portion of the head member in communication with the paint supply pipe, and a paint outlet provided from the paint outlet port to cover the paint supplied from the paint outlet port. The holder is provided with a paint reservoir consisting of a concave portion provided between the sliding portions of the head member to temporarily store the paint and supply the paint to the cutout portion, and the holder includes A paint supply pipe communicating with the paint outlet having a check valve above is provided, and the check valve is opened by upward movement of the shaft.

(Function) The present invention uses a coating device having such a configuration, and presses two sliding portions of the head member, which is provided at the tip of the shaft that is slidable within the holder, into contact with the area to be coated. Next, the paint from the paint supply pipe is filled through the paint outlet into a paint reservoir consisting of a recess provided between the sliding parts of the head member, and the paint is temporarily stored therein. Then, while supplying paint to the cutout side of the sliding portion regardless of fluctuations in coating speed, the head member is slid onto the area to be coated while being pressed. At this time, the shaft is provided in the holder so as to be slidable in the vertical direction while being biased downward, and the head member is swingable in the coating direction and in a direction perpendicular to the coating direction. It is provided. Therefore, even if the area to be coated is an inclined or curved surface, the head member can be reliably brought into sliding contact with the area to be coated. When the head member is pressed and slid against the area to be coated, the paint filled in the paint reservoir has a predetermined viscosity and therefore adheres to the area to be coated, causing the head member to slide. As a result of the action, a coating film with a cross-sectional shape corresponding to the cross-sectional shape of the gap between the cutout and the area to be coated is extended and formed by the cutout at the rear in the coating direction, and the paint is applied to the area to be coated. Apply.

In addition, during the above-mentioned coating operation, if the head member is not in sliding contact with the area to be coated and the shaft is moving downward, the check valve shuts off the paint supply pipe and prevents the paint from flowing to the paint reservoir side. supply will be stopped. When the head member comes into sliding contact with the area to be coated, the shaft is pushed up relatively, and the shaft releases the check valve, communicates the paint supply pipe, and supplies paint to the paint reservoir.

(Example) An example of implementing the present invention will be described in detail below using FIGS. 1 to 3.

Figure 1 is an explanatory cross-sectional view, Figure 2 is the − of Figure 1.
The line sectional view and FIG. 3 are explanatory diagrams of usage examples.

This coating device consists of a holder 1, a shaft 2, and a head member 3, and is attached to a robot arm 5 via a mounting seat 4 on the top of the holder 1 to perform coating work.

The upper part of the holder 1 constitutes a part of a paint supply pipe 11, and a check valve 6 is provided in the paint supply pipe 11. The valve chamber 7 of the check valve 6 is connected above to a separately installed paint supply device (not shown), and the lower portion of the valve chamber 7 is closed by a valve body 9 urged downward by a valve spring 8. and communicates with a paint supply pipe 11 via a shaft sliding chamber 10 below.

The shaft 2 is provided with a protruding portion 12 that protrudes toward the valve body 9 through the shaft sliding chamber 10 at the upper end, and the holder 2 is attached to the outer periphery of the upper end via a sealing material 13.
A shaft sliding part 14 that can freely slide is provided on the inner peripheral surface of the shaft sliding part 14, and a stepped part 16 supported via a shaft cover 15 fixed to the holder 1 is provided at the lower middle part of the shaft sliding part 14. A clevis 17 is provided at the lower end, and a spring 18 is provided above the clevis 17 on the outer peripheral side of the shaft 2 to bias the shaft 2 downward.

The head member 3 is provided with sliding parts 19, 19 that slide into contact with the coated part a notch having a predetermined width in a direction perpendicular to the coating direction of the tip of the sliding portions 19, 19 and defining a predetermined gap between the tip of the sliding portion 19 and the coated portion X; A paint outlet 21 is provided between the sliding parts 19, 19 of the head member 3, and a paint outlet 21 is provided between the sliding parts 19, 19 of the head member 3.
A paint reservoir 22 consisting of a recessed portion is provided in between, and a paint supply pipe 11 is provided that communicates the paint outlet 21 with the shaft sliding chamber 10. The head member 3 has a head clevis 23 at its upper part and is attached to a vertical shaft 25 by a horizontal shaft 24 so as to be slidable in the coating direction.
is pivotally supported by the clevis 17, and allows the head member to swing freely in a direction perpendicular to the coating direction via a horizontal shaft 24.

Next, the operation of the above embodiment will be described.

The holder 1 attached to the robot arm 5 is moved to a predetermined location on the area to be coated X, and the head member 3 is brought into contact with the area to be coated. By further pressing, the shaft 2 with the head member 3 at the tip is pushed upwards relatively inside the holder 1 and the holder cover 15, and the protrusion 12 pushes the valve body 9 of the check valve 6. The push-up valve chamber 7 and the shaft sliding chamber 10 inside the holder 1 are communicated with each other, and the paint from the paint supply device is supplied to the paint reservoir 22 of the head member 3 via the paint supply pipe 11.

The head member 3 is slid while filling the paint reservoir 22 with paint in a state in which the head member 3 is brought into pressure contact with the area to be coated. Since the paint filled in the paint reservoir 22 has a predetermined viscosity, it adheres to the area to be coated X, and by sliding the head member 3 in the direction of arrow A, the paint inside the paint reservoir 22 is removed. flows along the inclined surface 19a of the sliding portion 19, and the head member 3
A coating film Y having a corresponding cross-sectional shape is extended and formed by the cutout 20 at the rear of the coating area X.
A coating film with a predetermined width and uniform coating thickness is formed on the surface. In addition, since the head member 3 is slid in a state in which it is pressed into contact with the area to be coated, the notched portion 20
The cross-sectional shape of the gap between and the coated portion X is always constant regardless of the sliding speed, that is, the coating speed. Therefore, even if the coating speed varies, a coating film with a predetermined width and uniform thickness can be formed on the coated area X. In this embodiment, the cutout portion 20 of the head member 3 is provided at the front and rear sliding portions as shown in the first figure, so that it is slidable in both the front and rear directions of the coating direction.
0 may be provided on one of the front and rear sliding portions 19, 19, and the sliding portion 19 provided with the cutout portion 20 may be slid at the rear in the coating direction.

Further, since the shaft 2 is urged downward by the spring 18, the head member can be slid into contact with the area to be coated X with a predetermined pressure, as shown in FIG.
The head member 3 is attached to a horizontal shaft 24 via a head clevis 23 to a vertical shaft 25 which is pivotally supported by a clevis 17, and is swingable in the coating direction and in a direction orthogonal to the coating direction, so that it can be moved freely in the coating direction and in the direction perpendicular to the coating direction. Even when X is inclined, the head member 3 can swing and reliably come into sliding contact with the area to be coated. Therefore, the tracing of the head member 3 to the area to be coated X does not depend on teaching by a robot device or the like. Furthermore, when the head member 3 is moved above the area to be coated X to remove the pressure on the shaft 2, such as when finishing or interrupting the coating, the shaft 2 is moved downward by the spring 18 and moved relatively downward. The stepped portion 1 of the shaft 2 is pushed down to the holder cover 15.
6 is supported. As a result, the protruding portion 12 of the shaft 2 moves downward to release the valve body 9 of the check valve 6, and the valve body 9 is urged downward by the valve spring 8 to block the flow path and remove the paint reservoir 22. Since the supply of paint to the side is stopped, unnecessary supply of paint can be prevented.

The one shown in the fourth figure is another embodiment in which a side wall 22a is provided on the side of the paint reservoir 22, and the other configuration is the same as that of the above-mentioned embodiment. It is a diagram.

This is connected to the front and rear sliding parts 19, 19 on both sides of the paint reservoir 22 of the head member 3, and the side walls 22
a is provided, thereby making it possible to obtain a more accurate coating width.

(Effects) As is clear from the above description, the present invention stores and fills the paint reservoir, which is a concave part provided in the head member that has a paint outlet for supplying the paint, while moving the head member to the area to be coated. By pressing upward and sliding, the paint filled and stored in the paint reservoir can be stably supplied to the notch provided in the sliding part of the head member. To provide a coating device capable of forming a uniform coating thickness in a predetermined width by spreading the coating material through the coating material, and having a simple structure and easy maintenance.

In addition, since the head member is slid in pressure contact with the area to be coated, the cross-sectional shape of the gap between the notch and the area to be coated is always constant regardless of the sliding speed, that is, the coating speed. It becomes constant. Therefore, even if the coating speed varies, a coating film with a predetermined width and uniform thickness can be formed on the coated area. Furthermore, the shaft is urged downward by a spring so that it can slide freely into the holder, and it is also made swingable in the direction in which the head member is applied and in the direction orthogonal to the application direction.
Even when the area to be coated is inclined or has a predetermined curved surface, the head member swings and reliably slides into contact with the area to be coated with a predetermined pressing force. Therefore, it is not necessary to rely on teaching by a robot device or the like to trace the head member to the area to be coated. Furthermore, a check valve installed in a part of the paint supply pipe is opened and closed by a shaft that moves up and down according to the state of sliding contact of the head member with the area to be coated, thereby preventing unnecessary paint supply when not being coated. can do.

[Brief explanation of the drawing]

An embodiment of the present invention is shown in FIGS. 1 to 3,
Figure 1 is an explanatory cross-sectional view, Figure 2 is the − of Figure 1.
3 is an explanatory diagram showing an example of use, FIG. 4 is an explanatory sectional view showing a modification of this embodiment, FIG. 5 is a sectional view taken along the line -- of FIG. 4, and FIG. 6 is a conventional example. An explanatory diagram is shown. DESCRIPTION OF SYMBOLS 1... Holder, 2... Shaft, 3... Head member, 5... Robot arm, 6... Check valve, 11... External paint supply pipe, 18... Spring, 19... Sliding part, 20 ...Notch part, 21...
...Paint outlet, 22...Paint reservoir.

Claims (1)

[Scope of utility model registration request] It is a device for applying paint such as a primer to the area to be coated, and includes a holder attached to a robot arm, etc., and a device installed inside the holder so as to be able to slide vertically while being biased downward. a shaft, and a head member provided at the tip of the shaft so as to be swingable in the coating direction and in a direction perpendicular to the coating direction, and having a sliding portion that slides into contact with the coated area at two locations, front and rear in the coating direction. and a notch provided in the sliding part of the head member to have a predetermined width in the direction orthogonal to the coating direction and to define a gap between the sliding part and the part to be coated, and the sliding part of the head member. A paint outlet is provided in the part to communicate with the coating supply pipe, and the paint supplied from the paint outlet is temporarily stored between the part to be coated and the paint is supplied to the cutout part. a paint reservoir consisting of a recess provided between the sliding parts of the head member; the holder is provided with a paint supply pipe communicating with the paint outlet having a check valve above the shaft fitting part; A coating device characterized in that the check valve is opened by upward movement of the shaft.