JPH0111296Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to an ultraviolet irradiation device that uses a conveyor belt for cooling the inside of the device.

[Prior art]

Generally, as shown in Figure 3, an ultraviolet irradiation device consists of, in addition to the power source, a lighting device 1 that includes a built-in ultraviolet lamp, reflector, shutter, etc., a conveyor 2 that transports the workpiece to be irradiated with ultraviolet rays, and an external cover that prevents ultraviolet rays from leaking outside. 3, and a cooler 4 for cooling the inside of the lamp/device. Among these coolers, almost all of the devices are equipped with air cooling fans to cool the lamps to take heat countermeasures. On the other hand, methods for cooling the work include air cooling using a fan that blows air directly onto the work, water cooling that passes cooling water near the work, and optical cooling that cuts out infrared rays by using a half mirror or filter. There are several methods that can be used alone or in combination. However, in order for these methods to provide a sufficient cooling effect, air-cooled systems require a fairly large fan, and water-cooled systems require additional equipment in addition to the main unit, such as piping, pumps, and cooling towers for recycling. This increases the size of the entire device and increases energy consumption. Furthermore, the optical cooling method has the disadvantage that half mirrors, filters, etc. are very expensive.

By the way, although the conveyor belt that is in direct contact with the workpiece releases a small amount of heat to the outside, most of it is contained inside the cover as shown in Figure 3, so the cooling effect is small, especially when it comes to cooling. It has not been used.

[Purpose of invention]

Therefore, this invention focuses on the conveyor and utilizes its belt for cooling, thereby making up for the shortcomings of the conventional cooling method.The purpose of this invention is to eliminate the need for a large amount of attached equipment, to be inexpensive, and to be simple to use with current equipment. This modification provides an ultraviolet irradiation device with sufficient cooling effect.

[Summary of the idea]

The present invention provides an ultraviolet irradiation device comprising an ultraviolet irradiation lamp, a loop-shaped conveyor, an ultraviolet blocking external cover, and a cooler, in which the conveyor has movable heat dissipation fins on the belt, and the return side of the conveyor is The ultraviolet irradiation device is characterized in that the ultraviolet ray irradiation device passes through the outside of the ultraviolet ray blocking outer cover, and the fins are rotated and oriented in a vertical direction. By doing so, the heat accumulated in the belt will be released to the outside, and the belt itself will play an auxiliary role in the cooling function within the device.

〔Example〕

FIG. 1 shows an embodiment of the present invention, in which a belt 5 of a conveyor 2 passes a workpiece 6 under an ultraviolet irradiation lamp 1.
After the vehicle runs with the vehicle running, the vehicle exits the ultraviolet-blocking external cover 3 and runs under it. FIG. 2 is an enlarged view of the belt 5, on which a large number of movable heat dissipation fins 7 are provided.

[Effect of idea]

The present invention replaces the conventional transport conveyor, which circulates within an ultraviolet irradiation device and has almost no cooling effect, by providing a large number of heat dissipating fins on the belt, and further moving the belt itself outside the external cover on the return trip. At that time, the heat dissipation fins rotate and face vertically, so that they are separated from the conveyor and have a cooling function. As a result, it is possible to fully fulfill the auxiliary role of conventional air-cooled and water-cooled coolers, making it possible to downsize and reduce their use. Therefore, the belt will be a little longer, but by passing it under the outer cover, the size of the main body will hardly change, which will ultimately make the entire device smaller and reduce the energy consumption required for cooling. There are also advantages. Furthermore, if the workpiece is not a single piece but a continuous piece such as a flexible circuit board, the temperature inside the device can be adjusted by using this ultraviolet irradiation device to pass the workpiece onto the conveyor and change the speed of the belt. becomes.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional view of the ultraviolet irradiation device of the present invention, Fig. 2 is an enlarged perspective view of the belt portion, and Fig. 3 is a cross-sectional view of the ultraviolet irradiation device of the present invention.
The figure is a schematic cross-sectional view of a conventional ultraviolet irradiation device. 1... Ultraviolet irradiation lamp, 2... Conveyor,
3... Ultraviolet blocking external cover, 4... Cooler, 5
...belt, 6...workpiece, 7...heat dissipation fin.

Claims (1)

[Scope of utility model registration request] In an ultraviolet irradiation device consisting of an ultraviolet irradiation lamp, a loop-shaped conveyor, an ultraviolet shielding external cover, and a cooler, the conveyor has a movable heat dissipating fin on a belt, and the return side of the conveyor is connected to the ultraviolet shielding external cover. An ultraviolet irradiation device characterized in that the ultraviolet ray irradiation device passes through the outside of the cover, at which time the fins rotate and face in a vertical direction.