JPH061262Y2 - UV irradiation device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to inks and paints that are cured by ultraviolet rays (so-called UV
The present invention relates to an improvement of an ultraviolet irradiation device that irradiates ultraviolet rays to inks and UV paints to cure and dry them.

[Conventional technology]

Among the UV irradiation devices used for curing and drying UV inks and UV paints, those that use a high-pressure metal vapor discharge lamp such as a high-pressure mercury lamp as an ultraviolet lamp are required to turn on again once the lamp is turned off for a few to a dozen minutes. Therefore, in many cases, the lamp is kept on and a shutter mechanism is provided to control irradiation and non-irradiation of the irradiation target.

An ultraviolet irradiation device having such a shutter mechanism has a structure as shown in FIG. 2, for example.
This is a gutter-shaped reflecting mirror 22 inside a box-shaped device body 21.
And a UV lamp 23 is installed inside the reflecting mirror 22, and an irradiation target 24 is placed under the device main body 21.
Is provided so as to irradiate the irradiated body 24 sent to the apparatus main body 21 with ultraviolet rays, and further, the reflecting mirror 22 is provided in the apparatus main body 21 as indicated by a dotted line. It is configured so that it can be rotated to block the irradiation of ultraviolet rays to the irradiated body 24, and the outside air taken in from the lower intake ports 26a and 26b of the apparatus main body 21 is discharged from the exhaust pipe 27 provided above. It is composed.

Reference numeral 28 is a cooling vent provided at the bottom of the reflecting mirror 22.

[Problems to be solved by the device]

However, the above structure has a drawback that the entire reflecting mirror 22 is rotated, so that the driving mechanism, the electric system, and the like are complicated and the entire apparatus is large. Further, when the reflecting mirror 22 is in the irradiation position (open) and in the non-irradiation position (closed), the flow of the cooling air in the main body of the apparatus is largely different, so that the characteristics of the ultraviolet lamp vary. It often has an adverse effect on the life etc. In particular, in such an apparatus, since the air inside the apparatus is drawn out from the exhaust tube 27 at the top of the apparatus and discharged, the change in the position of the reflector near the exhaust tube 27 has a great influence on the cooling effect of the lamp. To exert.
In such a device, the outside air inlets 26a and 26b are usually provided below the device main body 21, but it is desirable to provide an auxiliary reflection plate inside so that ultraviolet rays do not leak from the inlets 26a and 26b. However, in the structure in which the reflecting mirror 22 rotates as described above, there is a problem that it is difficult to provide this auxiliary reflecting plate without increasing the gap between the auxiliary reflecting plate and the apparatus main body.

[Means for Solving the Problems]

The present invention has the following configuration in order to eliminate the above drawbacks. That is, a gutter-shaped reflecting mirror is housed inside a box-shaped device body, an ultraviolet lamp is mounted inside the reflecting mirror, and an irradiation target is placed under the device body.
A delivery unit is provided to irradiate the irradiated body fed into the apparatus main body with ultraviolet rays, and further, the reflecting mirror is moved so as to block the irradiation of the ultraviolet rays to the irradiated body, and the apparatus In the device configured to discharge the outside air taken in from the lower part of the main body from the upper part of the main body of the device, the reflecting mirror is vertically divided into two parts from the center line of the bottom part, and each divided piece is movable around a point near the bottom part. It is configured so that the tip of each divided piece is moved inward to cover the ultraviolet lamp, and the tip of each divided piece is moved outward to form a reflecting mirror. The tip of the piece is configured to come into contact with an auxiliary reflecting plate that covers the outside air intake provided below the main body of the device with a slight gap.

〔Example〕

FIG. 1 shows an embodiment of the present invention. In the figure, reference numeral 1 is a box-shaped device main body, in which a gutter-shaped reflecting mirror 2 is provided.
, And an ultraviolet lamp 3 is mounted inside the reflecting mirror 2. In the lower part of the apparatus main body 1, there are provided injecting / delivering sections 5a, 5b of the irradiation object 4, and the irradiation object 4 fed into the apparatus main body 1 from the injecting section 5a is irradiated with ultraviolet rays. I am doing it. Further, the reflecting mirror 2 is constructed so as to be movable so as to block the irradiation of the ultraviolet rays to the irradiated body 4 by the structure described later. Also,
Outside air intakes 6a and 6b are provided in the lower portion of the apparatus main body 1, and the outside air taken in from the outside is discharged from an exhaust pipe 7 provided in the upper portion of the apparatus main body 1. In this device, the reflecting mirror 2 is divided into two parts in the longitudinal direction from the center line of the bottom part, and each of the divided parts 2a, 2b is movably supported around one point 8a, 8b close to the bottom part. , 2b are moved inward as shown by the broken line to cover the ultraviolet lamp 3, and the tip of each divided piece 2a, 2b is moved outward to form the reflecting mirror 2. At this time, the tip end of each divided piece 2a, 2b is configured to abut on the auxiliary reflection plates 9a, 9b covering the outside air intakes 6a, 6b provided below the apparatus body 1 with a slight gap. is there.

With this structure, when the reflecting mirror 1 is in the irradiation position (open), the tip of each divided piece contacts the auxiliary reflecting plates 9a and 9b, so that the object to be irradiated is effectively irradiated with ultraviolet rays. Further, when the reflecting mirror 2 is in the non-irradiation position (closed), the outside air taken in through the outside air intake ports 6a and 6b receives the auxiliary reflecting plate 9.
The momentum is weakened by hitting a and 9b, and the outer side of each divided piece 2a, 2b is cooled and discharged from the upper part of the apparatus main body 1.

Here, a point to be particularly noted is that since the divided pieces 2a and 2b are supported by the points 8a and 8b near the bottom, the position of the upper end does not change greatly even if the position of the tip changes. Therefore, the flow of the cooling air in the main body of the apparatus does not largely change regardless of the change in the position of the reflecting mirror. As a result, the characteristics of the ultraviolet lamp can be kept stable and the lamp life is not adversely affected.

[Effect of device]

According to the present invention, it is not necessary to rotate the entire reflecting mirror,
Since it is only necessary to move the tip end of the divided piece, the structure is simple and the entire device can be made compact.

Further, as described above, the lamp characteristics can be kept stable regardless of the change in the position of the reflecting mirror, and there is no adverse effect on the life of the lamp, and further, since the auxiliary reflecting plate can be installed, There is an advantage that the irradiated body can be efficiently irradiated with ultraviolet rays.

[Brief description of drawings]

FIG. 1 is a front view of an ultraviolet irradiation device according to the present invention, and FIG. 2 is a front view of a conventional ultraviolet irradiation device. 1 ... Device main body, 2 ... Reflecting mirror, 2a, 2b ... Dividing piece, 3 ...
UV lamp, 4 ... Irradiation object, 5a, 5b ... Inlet / outlet section, 6a, 6b ... Outside air intake port, 9a, 9b ... Auxiliary reflector.

Claims (1)

[Scope of utility model registration request] 1. A gutter-shaped reflector inside a box-shaped device body (1).
(2) is housed, an ultraviolet lamp (3) is mounted inside the reflecting mirror (2), and an irradiation / injection section (5a) (5b) for the irradiated body is provided below the apparatus body (1). Is provided so as to irradiate the object to be irradiated, which has been sent into the apparatus main body (1), with ultraviolet rays from the feeding section (5a), and further, in order to block the irradiation of ultraviolet rays to the object to be irradiated, In the device configured to move the reflecting mirror 2 and to discharge the outside air taken in from below the device body (1) from the upper part of the device body (1), the reflecting mirror (2) is arranged in the vertical direction from the center line of the bottom. It is divided into two parts, and each split piece (2a) (2b) is movably supported around a point near the bottom, and the tip of each split piece (2a) (2b) is moved inward so that the ultraviolet lamp ( When configured to cover the 3), when moving the tip of each split piece (2a) (2b) outward to form the reflecting mirror (2), the split piece (2a) (2b) The tip is the device book body
An ultraviolet irradiating device characterized in that it is configured so as to abut on auxiliary reflection plates (9a) (9b) covering the outside air intakes (6a) (6b) provided below (1) with a slight gap.