JPH0441569Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a base for a water-cooled ultraviolet lamp.

In the printing and painting fields, when printing or coating paper, plastic, etc. with ultraviolet-curable ink or paint that cures and dries by irradiating it with ultraviolet rays, it is difficult to cure it by irradiating it with ultraviolet rays. As a result, abnormalities such as deformation and shrinkage may occur in the paper or plastic. To prevent this, by inserting an ultraviolet lamp into a double-tube water-cooling jacket and turning it on, the heat generated by the ultraviolet lamp can be effectively removed by the water, making it possible to remove heat-resistant materials such as paper and plastic. Ultraviolet curable inks and paints can be used even for materials with poor quality, expanding the range of uses for this type of photosensitive material.

FIG. 1 shows an example of a conventional device of this type. In the figure, reference numeral 1 denotes a double-tube water cooling jacket made of quartz, and an inlet 2a and an outlet 2b for cooling water are provided at both ends. Reference numeral 3 denotes an ultraviolet lamp, to which a base 4 with flanges 5 at both ends is attached.
A lamp lead wire 6 is drawn out from the rear of the base 4. In this conventional method, since the outer peripheral end surface of the collar 5 on the base 4 is flat, the quartz water cooling jacket 1
When inserting the ultraviolet lamp 3 into the tube, the outer circumferential end surface of the collar 5 rubs against the inner wall of the jacket as it is inserted, so the jacket is easily damaged, and the dimensional accuracy of the end surface that comes into contact with the inner wall of the jacket must not be improved. There are problems such as an unnecessarily large gap between the jacket and the inner wall of the jacket, or the jacket getting stuck in the middle. In addition, in the case of a long lamp, the cap tilts due to deflection due to the lamp's own weight, so it is necessary to increase the gap between the cap and the jacket. Especially in the case of a water-cooled type, the cooling effect is greater when the inner tube of the jacket approaches the ultraviolet lamp as uniformly as possible. Therefore, the gap between the collar 5 and the inner wall of the jacket 1 is made small and the jacket at the top and bottom of the ultraviolet lamp is It is desirable to make the distances from the inner wall of No. 1 approximately equal.

The present invention provides a cap that makes it difficult to damage the jacket when inserting an ultraviolet lamp into a water-cooled jacket, reduces the dimensional accuracy of the collar of the cap, and allows the lamp to be easily attached. The outer periphery of the flange of the cap, which also serves as a lamp, is rounded in the direction of the lamp axis.

An embodiment of the present invention will be explained with reference to FIG. In Fig. 2, reference numeral 1 denotes a double-pipe water cooling jacket made of quartz, with a cooling water inlet 2a and an outlet 2 at both ends.
b is provided. Reference numeral 3 denotes an ultraviolet lamp, which is mounted in the water-cooling jacket 1 through a base 4 having flanges 5 at both ends. 6 is a lamp lead wire drawn out from the rear of the base 4. Base collar 5
The tip is a curved surface, and the radius R of this curved surface is preferably about 1/2 of the thickness t of the collar 5.

In the method of the present invention, when the ultraviolet lamp 3 with the base 4 attached is inserted into the water-cooled jacket 1 from one end, the dimensional accuracy of the collar only needs to be considered at the longest part X of the curve. This makes it easier to install the lamp, and there is no chance of damaging or damaging the jacket when inserting the lamp.Also, even if the base is tilted due to bending due to the lamp's own weight, the tip of the collar 5 of the base is curved, making it easy to follow. is good, and there is no need to increase the gap in advance.

By using the base of the present invention, the expensive jacket made of quartz will not be damaged or damaged when the ultraviolet lamp is inserted, and the bending due to the lamp's own weight can be alleviated, so it has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of a conventional device of this type, and FIG. 2 is a sectional view showing an embodiment of the device of the present invention. 1...Water cooling jacket, 2a...Inflow port, 2b
... Outlet, 3... Ultraviolet lamp, 4... Base,
5...Tsuba.

Claims (1)

[Scope of utility model registration request] An ultraviolet lamp cap for insertion into a water-cooled jacket, characterized in that the outer periphery of the collar of the cap, which also serves as a lamp holder, is rounded in the direction of the lamp axis.