JPS5945428B2 - Coating roll - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, sliding grooves 2, 2 in the axial direction are provided on both sides of the circumference of a sliding shaft body 1 which is rotationally driven, and the sliding grooves 2, 2 are fitted onto the driving shaft body 1 from both sides. Bottomed cylindrical applicator tubes 3, 3 sliding protrusions 4 on the inner surface
. The application roll is characterized in that a liquid application part 6 is formed over the inner bottom surface and the outer bottom surface, and its purpose is to uniformly apply the liquid to the inner bottom surface and both inner surfaces of the object to be coated. To provide coating rolls.

Conventionally, when applying liquid to the bottom and both inner surfaces of a workpiece with a roughly □-shaped cross section, the application was carried out on the outer periphery and sides of the application roll, but there were variations in the internal width of the workpiece. At the time, it was not possible to completely coat the inside of the object to be coated, and uneven coating was likely to occur. The present invention has been made in view of the above points, and will be described in detail below with reference to Examples.

The drive shaft body 1 is rotatably supported by rotating shafts T on both sides, and is made of metal such as iron, and has a pair of sliding shafts on both left and right sides of its circumference, as shown in Fig. 1. Groove 2
is recessed. The applicator cylinder 3 has a cylindrical shape with a bottom, and has a liquid applicator 6 formed by coating a rubber layer such as butyl rubber or urethane rubber on its outer periphery and outer bottom surface, and has a through hole 8 in the center of the bottom for insertion of the rotating shaft T. is provided. Further, a pair of sliding protrusions 4 are protruded from the inner circumference of the coating cylinder 3. This applicator tube 3 is fitted from both sides of the drive shaft body 1 as shown in FIGS. 2 and 3, and inserted into the sliding groove 2 of each sliding protrusion 4, and A spring 5 is suspended between the inner bottom surface of the coating tube 3 and the coating tube 3 to elastically bias the coating tube 3 outward. As shown in FIG. 4, the object to be coated 9 has a roughly □-shaped cross section, and in this embodiment, it is formed by bending hard polyvinyl chloride. A liquid such as an adhesive is applied to the bottom surface and left and right inner surfaces shown, and urethane resin is injected into the recesses and foamed to form a material used as a heat insulating interior material. When the coating cylinder 3 is rotated in synchronism by rotating the drive shaft 1 and the object 9 to be coated is fed to the coating roll as shown in FIG. A liquid is applied to the inner surface of the object 9 at the outer bottom surface of each coating tube 3, and this liquid improves the adhesion between the object 9 and the urethane resin. At this time, the applicator cylinder 3 is
As the distance between the inner surfaces of the drive shaft body 1 changes, the drive shaft body 1 moves in the axial direction due to the sliding of the sliding protrusion 4 in the sliding groove 2 and the elastic force of the spring 5. As described above, in the present invention, a cylindrical applicator tube with a bottom is fitted onto the drive shaft body from both sides, and a spring is interposed between the side surface of the drive shaft body and the inner bottom surface of the applicator tube. Therefore, there is an advantage that the outer bottom surface of the application tube is pressed against the inner surface of the workpiece by the spring, ensuring that the inner surface of the workpiece is coated.Moreover, the sliding groove recessed in the drive shaft body Since the sliding protrusion on the inner surface of the applicator tube is inserted so that it can slide freely in the axial direction, the applicator tube moves in the axial direction according to the width of the object to be coated due to the pressing force of the spring. Even if the width of the object varies, there is no risk of uneven coating on the inner surface of the object.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of the same, FIG. 3 is a side sectional view of the same, FIG. 4 is a sectional view of the object to be coated, and FIG. The figure is a front sectional view showing the coating state, and 1 is a drive shaft body, 2 is a sliding groove, 3 is an applicator cylinder, 4 is a sliding projection, 5 is a spring, and 6 is a liquid applicator.

Claims (1)

[Claims] 1. Sliding grooves in the axial direction are formed on both sides of the circumferential portion of the drive shaft body to be rotated, and sliding grooves on the inner surface of the bottomed cylindrical applicator cylinder, which are fitted onto the drive shaft body from both sides, are formed in the respective sliding grooves. It is inserted into the drive groove so as to be slidable in the axial direction, and a spring is interposed between the side surface of the drive shaft body and the inner bottom surface of the applicator cylinder to form a liquid application part extending over the outer periphery and the outer bottom surface of the applicator tube. A coating roll characterized by comprising: