JPS5843947Y2 - UV irradiation device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an ultraviolet irradiation device.

Conventionally, when applying and curing an ultraviolet curable paint on the outer periphery of a circular cross-section perpendicular to the axis, such as a cylindrical shape,
It is difficult to cure by irradiation of elemental rays uniformly without causing curing unevenness, so a room temperature curing type paint is usually applied.

However, this method requires a long period of time ranging from several hours to several days in some cases.

Further, depending on the structure of the surface to be irradiated, it may not be possible to use a baking type paint that requires a high baking temperature.

The present invention was developed based on the above circumstances, and it is equipped with an air blowing hole to suppress the rise in the temperature of the tube wall of the ultraviolet lamp, and a blower device to scatter the loosened air by blowing on the lamp. A conveying device configured to irradiate ultraviolet rays with the same wavelength and diffuse heat rays, and transport the irradiated surface while rotating it so that the paint applied to the outer periphery of the irradiated surface can be uniformly cured. The purpose of the present invention is to uniformly and efficiently cure an ultraviolet curable paint.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the main body 1 covers the entire circumference in the longitudinal direction and is open at both ends.

At the center of the bottom of the main body 1, there is provided a rail 3 protruding from both sides of the main body 1, on which an irradiated surface 2 is placed, which has a cylindrical shape and has painted flanges 2a at both ends.

A conveyor belt 4 that rolls and conveys the irradiated surface 2 placed on the rail 3 is installed along the rail 3 so that the irradiated surface 2 is in contact with the rail 3. There is.

The belt 4 is connected between a drive roller 6 which is pivotally supported on a drive roller support 5 installed on the right side of the main body 1 in FIG. They are installed in an endless manner.

Further, a tension roller 10 pivotally supported by a tension roller support 9 installed in the main body 1 is pressed against the running upper belt of the belt 4, and the belt is stretched.

At the top of the centroid side of the main body 1 is a motor 11 and a motor 1.
Transmissions 12 that change the rotational speed of one rotational speed are respectively installed, and a transmission belt 13 is installed between the transmissions 12 and the drive roller 6.

Ultraviolet lamps 14 for irradiating the circumference and side surfaces of the flange 2a of the irradiated surface 2 with ultraviolet light are installed at the inner ceiling and bottom of the main body 1, respectively, along the conveyance path of the irradiated surface 2.

The ultraviolet lamp 14 is provided with a reflector plate 15 that reflects the irradiated light toward the irradiated surface 2 .

The reflecting plate 15 is formed into a double structure as shown in FIGS. 2 and 4, and the outer wall 16 has a compressed air intake port 1.
7 is provided, and a plurality of air jet ports 19 are perforated in the inner wall 18.

A heat ray absorption cell 20 for absorbing heat rays from the ultraviolet lamp 14 is provided between the irradiation resistance height 2 and the ultraviolet lamp 14.
are installed along the entire length of the ultraviolet lamp.

Also, the air blown out from the reflector 15 is transmitted to the ultraviolet lamp 1.
A fan 21 is installed near one end of the ultraviolet lamp 14 in the axial direction for cooling the lamp 4 and discharging the heated hot air from one end of the main body 1.

The heat ray absorption cell 20 is provided with a cooling water intake port 22 for taking in cooling water and a discharge port 23 for discharging heated water passing through the heat ray absorption cell.

Next, the effect will be explained.

First, the exposed height 2 having both flanges 2a coated with ultraviolet curable paint is placed on the rail 3 and inserted between the rail 3 and the conveyor belt 4.

The belt 4 is driven by a transmission 12 using a motor 11 as a driving source.
It is driven via a transmission belt 13.

Further, the position between the rail 3 and the lower belt of the conveyor belt 4 is determined by adjusting the driving roller support 5 and the driven roller support 7 of the conveyor belt 4 according to the size of the irradiation resistance height 2.

Further, by adjusting the tension roller support 9, the tension roller 10 pushes the upper belt 4 onto the conveyor belt 1, and the tension of the belt is adjusted.

With the conveyor belt 4 adjusted in this way, the irradiation resistance height 2
is transported to the ultraviolet irradiation area while rolling on rails.

The ultraviolet lamp 14, which irradiates the painted surface with high irradiation resistance, suppresses the rise in tube wall temperature of the ultraviolet lamp 14 with compressed air blown out from the reflector plate 15, and is blown onto the lamp 14, and the loosened air is passed through the fan. Main body 1 due to wind pressure of 21
is discharged outside.

Further, when the ultraviolet rays emitted from the lamp pass through the heat ray absorption cell 20, the heat rays are absorbed by the cooling water circulating inside the heat ray absorption cell 20, and only the ultraviolet rays that do not involve heat are irradiated onto the irradiation resistance height 2. .

By passing such an ultraviolet ray irradiation part through the irradiation resistance 2, the painted surface is uniformly cured, and the irradiation resistance 2 is supplied and conveyed from one side of the main body 1, passes through the irradiation part, and is taken out at the other side. This completes one process.

As explained above, the present invention is capable of uniformly and efficiently curing the paint applied to an object with a circular cross-section, such as a cylindrical or cylindrical body, thereby eliminating uneven curing. Defects are eliminated and quality is stable.

In addition, it is possible to prevent the temperature of the tube wall of the ultraviolet lamp from rising and to efficiently remove the heat rays of the ultraviolet rays to efficiently obtain a cured coating film of good quality.

[Brief explanation of drawings]

FIG. 1 is a sectional front view showing an embodiment of the present invention, FIG. 2 is a sectional side view, FIG. 3 is a front view showing essential parts of a reflector, and FIG. 4 is a sectional view. 1: Main body, 2: Illumination resistance, 3: Rail, 4: Conveyance belt, 5: Drive roller support, 7: Followed roller support, 14:
Ultraviolet lamp, 15: Reflector, 19: Air outlet, 20
: Heat ray absorption cell, 21: Fan.

Claims (1)

[Scope of utility model registration request] In an ultraviolet curing device that removes heat rays of irradiation light emitted from an ultraviolet lamp with a heat ray absorption cell and irradiates the irradiated surface with ultraviolet rays, the above-mentioned conveyor device transports the irradiated surface in a fixed direction while rolling it; a reflecting plate having a concave reflecting surface so as to reflect the irradiated light of the ultraviolet lamp toward the irradiated surface and having a plurality of air blowing holes drilled in the reflecting surface; An ultraviolet irradiation device characterized in that it is equipped with a blower device at one end that diffuses the loosened air that is injected from the reflector toward the lamp.