JPS637101B2 - - Google Patents

Description

[Detailed Description of the Invention] When applying a seal to a workpiece having a three-dimensional curved surface such as a wheel house of an automobile, the present invention allows a gun to follow the sealing surface of the workpiece that is suspended on a conveyor, and automatically applies sealing to the workpiece. The present invention relates to a device for applying a seal.

In order to assemble a wheel house for an automobile, a method is used in which a sealer is applied to the flange 1 as the welding edge of the workpiece A shown in FIG. 1, and then other workpieces not shown in the figure are welded. The sealing material 2 expanded by heating during welding completely fills the gap between the welded parts and prevents water from leaking inside the wheel house.

However, conventionally, the application of sealer to workpieces with three-dimensional curved surfaces has been carried out using a manual gun, and uneven application occurs due to variations in the grip force on the gun, application speed, etc., and it takes a lot of man-hours to remove the sealer that protrudes from the surface. It cost.

The present invention aims to solve this problem and provide a coating device that completely automates sealer coating.

That is, the automatic sealer applicator of the present invention includes a table base that is provided so as to be able to reciprocate on a slide base in the direction in which the work is located, and a table base that is provided on the table base in a direction perpendicular to the sliding direction of the base. A drive mechanism consists of a chain stretched in an arc-shaped arch, a geared motor that moves on the chain, and a frame that rotates in conjunction with the motor and is brought into contact with the workpiece by the force of a spring. It is characterized by comprising a copying sensor and an automatic sealer gun attached to the copying sensor.

Embodiments of the present invention will be described below with reference to the drawings. Work A is set on a gate suspended from a conveyor (not shown), and when it is carried to a predetermined position in the direction of the arrow, the table base 3 is moved to the slide base 4 by an air cylinder (not shown). Slide out on rail 5 to near work A. At the same time, as the air cylinder 6 retreats, the head of the copying sensor 10, which is fixed to the frame 8 with a screw 9, is lowered by the tensile force of the spring 7. A roller 11 is attached to the head of the scanning sensor 10 and is received at one end of an arcuate flange 1 having a width of 15 mm and a length of 1150 mm. Furthermore, at the same time, the air cylinder 12 is operated and the nozzle of the automatic gun 13 is pressed against the end point a of the flange 1 (see FIG. 2). The sealer is automatically pushed out from the automatic gun 13, and application of the sealer begins shortly after pressing.

The table base 3 is provided with an arcuate arch 14, and a chain 15 is attached to the outer periphery of the arch 14. 16 is a limit switch (L/S), and the geared air motor 17 is stationary, but at the same time as sealer application starts as described above, it engages with the gear of the chain 15 and moves toward the limit switch 18. start. When the geared air motor 17 moves, the frame 8 rotates via the shaft 19, and the automatic sealer gun 13 applies the sealer 2 from point a to point b of the flange 1 following the copying sensor 10.

When the automatic sealer gun 13 reaches point b, the limit switch 18 operates and the automatic sealer gun 13
The extrusion of sealer from the air cylinder 1 stops.
2, the air cylinder 6 is raised, and the table base 3 is moved back simultaneously, the copying sensor 10 and gun 13 are removed from point b, the geared air motor 17 is returned to the limit switch 16, and the next workpiece is carried. Wait until it comes. All these operations are switched by an air valve (not shown).
The time required for one application is approximately 10 seconds, which is 15 seconds shorter than the traditional manual method, and an additional 10 to 15 seconds per application.
It is no longer necessary to remove the protruding sealer each time, significantly shortening the work time.

As mentioned above, the device of the present invention improves productivity, the gun follows the scanning sensor, the application pattern is controlled, and the amount of sealer applied is also mechanically controlled, so the product quality is stable without uneven application. do.
In addition, since the operator does not directly handle the sealer, there is no need to inhale organic solvents, reducing man-hours and solving health and safety problems. It goes without saying that the apparatus of the present invention can be used not only for wheel houses but also for applying sealer to three-dimensional curved surfaces of general workpieces.

[Brief explanation of the drawing]

FIG. 1 shows an explanatory view of the apparatus of the present invention, and FIG. 2 shows an explanatory view of the sealer application part. In the figure, 1... flange, 2... sealer, 3...
...stand base, 4...slide base, 5...rail, 6...air cylinder, 7...spring, 8
... Frame body, 9 ... Screw, 10 ... Copying sensor, 1
1...Roller, 12...Air cylinder, 13...
...Automatic sealer gun, 14...Arch, 15...
Chain, 16... Limit switch, 17...
Geared air motor, 18...limit switch, 19...shaft.

Claims (1)

[Claims] 1. A table base provided to be able to reciprocate on the slide base in the direction in which the workpiece is positioned, and a chain stretched in an arcuate arch provided above the table base in a direction perpendicular to the sliding direction of the table base. a drive mechanism consisting of a geared air motor that moves on the chain; a scanning sensor that is attached to a frame that rotates in conjunction with the motor and contacts the workpiece by the force of a spring; and a scanning sensor that is attached to the scanning sensor. An automatic sealer application device characterized by comprising an automatic sealer gun and an automatic sealer gun.