JPH06226146A - Nozzle - Google Patents

Abstract

PURPOSE:To enhance the maintenance effect of a tape by easily removing the dust bonded to the tape by providing a jet orifice jetting the fluid passed through a fluid passage in the direction crossing the direction vertical to a guide groove in an almost planar state in the vicinity of the leading end of the guide groove. CONSTITUTION:A nozzle 1 has an inclined guide groove 3 permitting a magnetic tape 10 being an object to be cleaned to pass in the direction shown by an arrow and blows off the fine dust stuck to the magnetic tape 10 by the compressed air from jet orifices 6. In this case, the nozzle 1 is planned so as to include the lateral direction of the magnetic tape 10 in the guide groove 3 inclined at about 45 deg. and compressed air is jetted in an almost planar state from the jet orifices 6 so as to obliquely cross the surface of the magnetic tape 10 at about 135 deg. and, therefore, the magnetic tape is almost uniformly cleaned without generating the twist, fluctuation or damage of the tape 10. Since jet orifices 6 are provided on both sides holding the inclined guide groove 3 therebetween, when the delivery and taking-up of the magnetic tape 10 are once performed, the matter stuck to both surfaces of the tape 10 can be blown off.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to nozzles, and more particularly to nozzles for cleaning tape.

[0002]

2. Description of the Related Art Nozzles used for ejecting fluid from a supply source at high speed have been used for various purposes.
The current situation is that there is no nozzle to clean the tape. Conventional nozzles are usually in the form of tapered cylinders, but if these are used to clean the tape, for example, to blow off dust etc. adhering to the video recording tape, the video recording tape may be twisted or shaken. There is a problem that the tape is damaged, and the adhered matter on the tape surface cannot be uniformly cleaned. To prevent these problems, the pressure of the ejected fluid must be kept low and the cleaning efficiency is poor. was there.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to prevent the tape as the object to be cleaned from being twisted or shaken and to be substantially uniform on the tape surface. It is to provide a nozzle effective for cleaning a tape, such as capable of ejecting a fluid.

[0004]

In the nozzle of the present invention, a fluid supply port is provided at the base end portion of the nozzle body, and a guide groove for guiding a tape to be cleaned is provided at the tip end portion.
A jet port is provided near the tip of the guide groove for jetting the fluid, which has entered from the supply port through the fluid passage in the nozzle body, in a substantially planar shape from a direction intersecting with the guide groove in the vertical direction. Characterize. Further, the jet outlets may be installed in a pair with the guide groove interposed therebetween, and the fluid sent from the fluid passage of the nozzle body in a bundle shape is provided at an angle intersecting the guide groove. The tape may be ejected in a substantially flat shape by an inclined side wall and a closing plate provided by opening only the ejection port on the inclined side wall of the main body, and the tape is inclined in the horizontal direction with respect to the ejection direction of the fluid. It is also possible to use an inclined groove that is moved.

[0005]

With the above construction, the nozzle of the present invention allows the tape as the object to be cleaned to be fitted into the guide groove and ejects the fluid to the tape surface in a substantially planar form from the direction intersecting the guide groove in the vertical direction. Further, if the jet outlets are provided in pairs with the guide groove sandwiched therebetween, the fluid can be jetted simultaneously to both surfaces of the tape. Further, if the guide groove is an inclined groove in the horizontal direction, it is possible to fit the width direction of the tape into the guide groove longer and clean the tape from an oblique direction.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a nozzle I of the present invention. The nozzle I has a nozzle body 1 in which two opposite surfaces each have a tapered surface 7 as an inclined side wall and a home-base type surface 8, and a compressor that extends in a cylindrical shape at the base end portion of the nozzle body 1 and the like. Air from a source of
It has an insertion tube 2 that fits with a hose tube or the like that guides inward, and at the tip of the nozzle body 1, the other surface 8 ′ of the home base type one surface 8 opposite to the other surface 8 ′ facing from the substantially central position. An inclined guide groove 3 inclined to the lower end by about 45 degrees is provided in the nozzle axial direction, and a blocking plate 5 is installed on the tapered surface 7 by sealing the three faces 9 of the upper end side and both side faces with an adhesive or the like. As a result, it is installed with only the bottom edge open.

FIG. 2 shows a nozzle I along the BB direction in FIG.
FIG. The air from the supply source can
Nozzle body 1 from air passage 4 as an air supply port
The air is sent to the inside and narrowed in diameter by the throttle portion 4 ′, and is then compressed once and then sent to the bifurcated air passages 4 a and 4 b penetrating the tapered surface 7. At this time, the air compressed in the throttle portion 4'expands by expanding the passages in the air passages 4a and 4b to increase the speed. This accelerated air enters the fine gap 6 ′ between the tapered surface 7 and the closing plate 5, and as described above, the closing plate 5 is sealed at its upper end side and both sides, so It is ejected in a substantially planar shape from the ejection port 6 which is formed in a planar shape by the lower end of the tapered surface 7.

FIG. 3 shows a perspective view of the nozzle I in use. The nozzle I inserts a magnetic tape 10 as a cleaning object into the inclined guide groove 3, and blows fine dust or the like adhering to the magnetic tape 10 with compressed air from the ejection port 6 while feeding the magnetic tape 10 in the direction of the arrow. In this case, the nozzle I is designed so as to include the width direction of the magnetic tape 10 in the inclined guide groove 3 of about 45 degrees, and the nozzle I is about 1
Since the compressed air is jetted from the jet port 6 in a substantially flat shape so as to intersect at an angle of 35 degrees, the magnetic tape 10 can be cleaned almost uniformly without being twisted, shaken, or damaged. In addition, since the ejection ports 6 are provided on both sides of the inclined guide groove 3, it is possible to blow away the adhered substances on both sides of the magnetic tape 10 once the magnetic tape 10 is unwound and wound. It is valid. It should be noted that dust and the like, which cannot be removed by a conventional cleaning tape made of paper or a plastic sheet, which is a cleaning means for a magnetic tape, can be removed.

In this embodiment, the cleaning of the magnetic tape with air is taken as an example, but the shape of the tape, the fluid, the nozzle or the like is not limited to this.

[0011]

[Effect] The nozzle of the present invention can easily clean the entire tape surface without causing the tape to be twisted or shaken, and the fine particles attached to the tape which cannot be completely removed by the prior art. Since dust etc. can be easily removed, the effect of maintaining the tape is enhanced.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a nozzle of the present invention.

FIG. 2 is a vertical sectional view taken along the line BB of FIG.

FIG. 3 is a perspective view showing a usage state of the nozzle of the present invention.

[Explanation of symbols]

 I Nozzle 1 Nozzle body 2 Insert pipe 3 Inclined guide groove 4 Air passage 5 Closing plate 6 Jet outlet

Front page continuation (72) Inventor Shigemi Mikami 2-2-1, Jinnan, Shibuya-ku, Tokyo Inside the Japan Broadcasting Corporation Broadcasting Center

Claims (2)

[Claims] 1. A nozzle body is provided with a fluid supply port at a base end portion thereof, and a tip end thereof is provided with a guide groove for guiding a tape as an object to be cleaned, and the nozzle body is provided with a guide groove near the tip end of the guide groove. The fluid that has entered through the fluid passage inside is
A nozzle provided with an ejection port that ejects in a substantially planar shape from a direction that intersects the guide groove in a direction perpendicular to the guide groove. 2. The nozzle body, wherein the jet outlets are installed in pairs with the guide groove sandwiched therebetween, and the fluid sent in a bundle form from a fluid passage of the nozzle body is provided at an angle intersecting the guide groove. Of the main body inclined side wall and a closing plate installed only on the main body inclined side wall to open the ejection port, and ejects the tape horizontally in the guide groove through the guide groove. The nozzle according to claim 1, wherein the nozzle is an inclined groove that is slanted and moved in a direction.