JPH03288543A - Ultraviolet irradiation apparatus - Google Patents

Abstract

PURPOSE:To easily replace a high pressure discharge lamp by reducing the moving distance of an irradiation unit due to the opening and closing thereof by revolving the irradiation unit centering around the hinge part in the longitudinal direction of the high pressure discharge lamp. CONSTITUTION:Irradiation units 35a-35c having high pressure discharge lamps 39a-39c provided therein are respectively mounted on base parts 33a-33c and made freely revolvable centering around the hinge parts 37a-37c in the longitudinal direction of the high pressure discharge lamps 39a-39c. The hinge parts 37a-37c are respectively provided to base parts 33a-33c and the irradiation units 35a-35c and the irradiation units 35a-35c are respectively revolved centering around the hinge parts 37a-37c in the direction vertical to the longitudinal direction of the high pressure discharge lamps 39a-39c. As a result, the moving distance of the irradiation unit concerned due to the opening and closing thereof is reduced to make it possible to easily exchange the high pressure discharge lamps.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to an ultraviolet irradiation device that irradiates ultraviolet rays using a high-pressure discharge lamp.

(Prior Art) The present invention involves irradiating ultraviolet rays onto a substrate coated with ultraviolet curable paint, ink, etc. in a printing process such as printing on printed plywood, printed wiring boards, or milk bags.
A method for curing this paint, ink, etc. is known.

In such a method, a high-pressure discharge lamp such as a high-pressure mercury lamp or a metal Harald lamp that irradiates ultraviolet rays is used, and this high-pressure discharge lamp is generally of a straight tube type and has a long arc tube length. It is used relatively often.

Figure 4 (a) and (
This will be explained using b). The high-pressure discharge lamp 45 is installed inside the irradiation unit 43 shown in FIG. 4(a), and irradiates the object to be irradiated, which is transported by one conveyor net, with ultraviolet rays. The irradiation unit 43 in which the high-pressure discharge lamp 45 is installed is mounted on the base part 41, and the high-pressure discharge lamp 4
A hinge portion 47 is attached to the longitudinal end of 5, on the right side in the figure. When replacing the high pressure discharge lamp 45,
As shown in FIG. 4(b), the irradiation unit 43 is located on the opposite side of the hinge portion 47 in the longitudinal direction of the high-pressure discharge lamp 45.
The high-pressure discharge lamp 45 installed in the irradiation unit 43 is replaced by rotating it in the direction of the upper arrow in the figure. Since the irradiation unit 43 is opened in the longitudinal direction of the high-pressure discharge lamp 45, the movement range of the irradiation unit 43 becomes large.

(Problem to be Solved by the Invention) In the conventional ultraviolet irradiation device, when replacing the high-pressure discharge lamp 45, the irradiation unit 43 is rotated around the hinge portion 47, so that the distance traveled by the open state of the irradiation unit 41 is limited. In particular, as the length of the arc tube of the high-pressure discharge lamp 45 increases, the moving distance becomes even larger, making replacing the high-pressure discharge lamp 45 a hassle. Further, when the irradiation unit 43 is in the open state, there is a risk that it may come into contact with other instruments and cause damage to the instruments.

The present invention has been made in view of the above, and its purpose is to reduce the moving distance of the irradiation unit due to opening and closing of the irradiation unit to facilitate replacement of high-pressure discharge lamps, and to facilitate the exchange of multiple irradiation units. An object of the present invention is to provide an ultraviolet irradiation device that can be miniaturized by narrowing the spacing between adjacent ultraviolet irradiation devices.

[Structure of the Invention] (Means for Solving the Problems) The ultraviolet irradiation device of the invention according to claim 1 is characterized in that the irradiation unit, which is placed on a base portion and includes a high-pressure discharge lamp therein, is rotated about a hinge portion as a fulcrum. In the ultraviolet irradiation device that is operated, a hinge portion is provided between the base portion and the irradiation unit in the longitudinal direction of the high-pressure discharge lamp, and the irradiation unit is rotated using the hinge portion as a fulcrum, so that the irradiation unit can be opened and closed. The ultraviolet irradiation device of the invention according to claim 2 is characterized in that a plurality of irradiation units each including a plurality of high-pressure discharge lamps mounted on a plurality of base portions are arranged in parallel in close proximity to each other. In the ultraviolet irradiation device in which the plurality of irradiation units are rotated about a hinge portion, a hinge portion is provided on the plurality of base portions and the plurality of irradiation units in the longitudinal direction of the high pressure discharge lamp. The gist of the present invention is that the plurality of irradiation units are rotated about each hinge portion as a fulcrum, so that the plurality of irradiation units can be freely opened and closed in a predetermined direction.

(Function) The ultraviolet irradiation device of the invention described in claim 1 is provided with a hinge section on the base section and the irradiation unit in the longitudinal direction of the high-pressure discharge lamp, and the irradiation unit is rotated using the hinge section as a fulcrum, By configuring the irradiation unit to be openable and closable, the distance traveled by the irradiation unit due to opening and closing of the irradiation unit can be reduced and the high-pressure discharge lamp can be easily replaced.

The ultraviolet irradiation device according to the invention described in claim 2 includes a plurality of base portions and a plurality of irradiation units provided with a hinge portion in the longitudinal direction of the high-pressure discharge lamp, and the irradiation unit is rotated using the hinge portion as a fulcrum. By moving the plurality of irradiation units in such a manner that they can be opened and closed in a predetermined direction, the distance between the plurality of irradiation units arranged in parallel can be narrowed, and the apparatus can be made smaller.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

FIG. 1 is a sectional view showing the structure of an embodiment of the ultraviolet irradiation device of the present invention.

In the ultraviolet irradiation device, a conveyor frame A3 is disposed at the right end of the conveyor lower plate 1 in the figure, and a conveyor frame B5 is disposed at the left end in the figure. Above conveyor frame A3
The motor 7 includes a motor 7, a gear head 9 for changing the rotation speed of the motor 7, and a motor bracket 11, which are connected to each other.

A drive shaft 13 is connected to the rotation shaft of the motor 7 and passes through the conveyor frame B5, and the rotational drive of the motor 7 is transmitted. Conveyor frame A3 on the drive shaft 13 above
Shaft collars 15a and 15b are pivotally attached to the conveyor frame B5 side, respectively. The shaft collar 15a.

A roller 17 is provided around the circumference of the roller 15b and rotates in response to the rotational drive of the motor 7. One conveyor net is wound around the roller 17, and the conveyor net 1
9 conveys the object to be irradiated by rotationally driving the roller 17 .

The conveyor frame B5 includes the conveyor net 1.
An exhaust fan 21 that exhausts the air inside the room and the exhaust fan 21
Exhaust duct 2 that blows air from one conveyor net to
3 is connected to the exhaust fan 21.

A slide rail 25 is mounted on the mounting surface of the conveyor frame A3 that is formed on the inside (L) in the drawing, and a slide rail 21a is formed on the mounting surface (L formed on the inside of the conveyor frame B5 in the drawing). L) be done.

On the slide rail 25a is an elevating threaded rod 2 which will be described later.
A joint 27a is provided to connect with the joint 9a. Lifting threaded rod 29a connected to the joint 27a
The irradiation units 35a to 35C, which will be described later, placed on the slide rail 25a are raised and lowered by a unit lifting/lowering handle (not shown). A hexagonal cap nut 31a is screwed into the uppermost end of the lifting screw rod 29a.

On the other hand, in the drawing of the conveyor frame B5, on the mounting surface formed inside the top part, there are slide rails 25b1 joints 27b1 and lifting screw rods 2, similar to the conveyor frame A3.
9b and a hexagonal bag 31b.

FIG. 2 (
This will be explained using a) and (b).

First, the closed state of the irradiation units 35a to 35C is shown in FIG.
This will be explained using a). The above slide rails 25a, 2
Base portions 33a to 33C serving as supports for the irradiation units 358 to 35c placed on the irradiation units 358 to 35c placed on the base portions 33a to 33c are fixed to the base portions 33a to 33C, and the irradiation units 358 to 35 are
c are arranged in parallel. The irradiation units 35a to 35C have high pressure discharge lamps 39a to 39c installed therein, and the interval between each irradiation unit is equal to or greater than the height of the irradiation unit.

A hinge portion 37c is provided on the base portion 33a and the irradiation unit 35a, and the irradiation unit 35a rotates in a direction perpendicular to the longitudinal direction of the high-pressure discharge lamp 39a (hereinafter referred to as the lamp longitudinal direction) using the hinge portion 37a as a fulcrum. move. Similarly, a hinge portion 37C is provided on the base portion 33b and the irradiation unit 35b, and the hinge portion 37c is provided on the base portion 33c and the irradiation unit portion 35c, using the hinge portion 37c as a fulcrum. As a result, the irradiation units 35b and 35c rotate in a direction perpendicular to the longitudinal direction of the high-pressure discharge lamps 39b and 39c.

The case where the high pressure discharge lamps 37a to 37c are replaced by rotating the irradiation units 35a to 35c in a direction perpendicular to the lamp longitudinal direction will be described with reference to FIG. 2(b).

The irradiation unit 35a is rotated about the hinge portion 37a and is locked to the slide rails 25a and 25b. The high pressure discharge lamp 39a installed inside the locked irradiation unit 35a is replaced. Similarly, the irradiation unit 1-35b is rotated about the hinge part 37b to replace the high-pressure discharge lamp 39b, and the irradiation unit 35c is rotated about the hinge part 37c to replace the high-pressure discharge lamp 39c.

Next, the operation of this embodiment will be explained.

First, after powering on the device, the irradiation units 35a to 35c
The high-pressure discharge lamps 39a to 39c installed therein are lit and emit ultraviolet light, visible light, and infrared light, and the ultraviolet light is reflected by a reflector (not shown). The reflected ultraviolet rays are irradiated onto the object to be irradiated, which is transported by the conveyor net 19, and the object to be irradiated is cured. When replacing the high pressure discharge lamps 39a to 39c, for example, due to reasons such as durability, the high pressure discharge lamps 39a to 39c are replaced.
39c is turned off, and the irradiation units 35a to 35c are rotated in a direction perpendicular to the longitudinal direction of the lamp using the hinge parts 37a to 37c as fulcrums. Rotated irradiation unit 35a~
35c is locked to the slide rails 25a and 25b. The high pressure discharge lamps 39a to 39c installed in the locked irradiation units 35a to 35c are replaced with new high pressure discharge lamps.

As a result, when the irradiation units 35a to 35c are opened, the moving distance of the irradiation units 35a to 35c is reduced compared to the conventional opening state in the longitudinal direction of the lamp, and the irradiation units 35a to 35c are It can prevent contact with other equipment.

Next, another embodiment will be described using FIGS. 3(a) and 3(b).

This embodiment uses the irradiation units 35a to 35c of the above embodiments.
The aim is to reduce the size of the device by narrowing the distance between the two. That is,
As shown in FIG. 3(a), the irradiation units 35a to 35c placed on the base portions 33a to 33c are arranged side by side on the slide rails 25a and 25b with narrow intervals between them.

When replacing the high pressure discharge lamps 39a to 39c installed in the irradiation units 35a to 35c, please refer to Fig. 3 (
As shown in b), the irradiation unit 35a at the right end in the figure is rotated about the hinge part 37a as a fulcrum, and the irradiation unit 35a is moved to the slide rails 25a, 25b.
to be locked. When the irradiation unit 35a is locked, the irradiation unit 35b is rotated about the hinge part 37b and is locked to the base part 33a. Furthermore, the irradiation unit 35c is rotated about the hinge part 37c and is locked to the base part 37b. Locked irradiation unit 358~
Three high pressure discharge lamps a to 39c installed inside 35c
is exchanged. In addition, the above irradiation units) 35a to 35c
The order of rotating is the irradiation units 35a to 35b,
It must be rotated in the order of 35c.

This makes it possible to reduce the spacing between the irradiation units 35a to 35c when they are arranged side by side, thereby reducing the size of the apparatus.

Furthermore, the high pressure discharge lamps 39a to 39c installed in the irradiation units 35a to 35c can be easily replaced.

[Effects of the Invention] As described above, according to the present invention, the irradiation unit can be opened and closed by rotating about the hinge portion in the longitudinal direction of the high-pressure discharge lamp as a fulcrum. By reducing the moving distance of the irradiation unit, the high-pressure discharge lamp can be easily replaced. Furthermore, destruction of other instruments when the irradiation unit is in the open state can be prevented.

According to the invention set forth in claim 2, by narrowing the mutual spacing between the plurality of irradiation units and arranging them in parallel in the longitudinal direction of the high pressure discharge lamps, it is possible to reduce the size of the apparatus and to reduce the number of irradiation units. The high pressure discharge lamp can be easily replaced by reducing the moving distance.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing one embodiment of the ultraviolet irradiation device of the present invention, Fig. 2 is a side view of the ultraviolet irradiation device of the invention, Fig. 3 is a side view showing another embodiment, and Fig. 4 1 is a diagram showing a conventional ultraviolet irradiation device. 25a, 25b - Slide rails 33a - 33c - Base parts 35a - 35c - Irradiation units 37a - 37c - Hinge parts 39a - 39c - High pressure discharge lamp

Claims (2)

[Claims] (1) In an ultraviolet irradiation device in which an irradiation unit including a high-pressure discharge lamp mounted on a base part is rotated about a hinge part, the base part and the irradiation unit are rotated in the longitudinal direction of the high-pressure discharge lamp. 1. An ultraviolet irradiation device comprising a hinge portion, the irradiation unit is rotated about the hinge portion as a fulcrum, and the irradiation unit can be opened and closed. (2) A plurality of irradiation units each containing a high-pressure discharge lamp mounted on a plurality of base parts are arranged in close proximity to each other, and the plurality of irradiation units are rotated about a hinge part as a fulcrum. In the ultraviolet irradiation device, hinge portions are provided on the plurality of base portions and the plurality of irradiation units in the longitudinal direction of the high-pressure discharge lamp, and the plurality of irradiation units are rotated using each of the hinge portions as a fulcrum. An ultraviolet irradiation device characterized in that a plurality of irradiation units are configured to be openable and closable in a predetermined direction.