JPH05107399A - Electron beam application device - Google Patents

Abstract

PURPOSE:To provide an electron beam application device which can prevent a web from suspending within an electron beam irradiation area. CONSTITUTION:An electron beam application device is provided with an electron beam generating portion 2, an electron beam irradiation area 4, a conveying line 6, guide rollers 8a, 8b for guiding a web 50, and a tray carrier 10 for holding a tray. The web 50 is supported by the guide rollers 8a, 8b and the tray carrier 10 is moved to a position near the electron beam irradiation portion 4 and at which no electron beam is applied and then an electron beam is applied to the web 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electron beam irradiation apparatus of both continuous type and batch type.

[0002]

2. Description of the Related Art FIG. 5 is a schematic configuration diagram of a conventional electron beam irradiation apparatus. The electron beam irradiation apparatus shown in FIG. 5 has an electron beam irradiation region 60 for irradiating a sheet-like object (web) 90 with accelerated electron beams, a conveyance path 70 for conveying the web 90, and a web 90. Guide rollers 80a and 80b provided at both ends in the conveyance path 70 for guiding the sheet. In the electron beam irradiation apparatus thus configured, the web 90 is guided and sent out by the guide rollers 80a and 80b, and is irradiated with the electron beam in the electron beam irradiation region 60 provided in the intermediate portion of the transport path 70. ..

[0003]

By the way, for example,
In the experimental electron beam irradiation device, the guide rollers 80a, 8a
Since the distance between 0b is about 2m, the guide roller 80
Even if the web 90 is supported by a and 80b, the web 90 is not formed in the middle portion of the transport path 70 where the electron beam irradiation area 60 is provided.
May hang down. On the other hand, since the high voltage and the beam current for extracting the electron beam are set with reference to the state where the web 90 is taut, if the web 90 hangs down, a desired electron beam irradiation process should be performed. There was a problem that I could not.

The present invention has been made under the above circumstances, and an object thereof is to provide an electron beam irradiation apparatus capable of preventing the web from hanging in the electron beam irradiation region.

[0005]

An electron beam irradiation apparatus according to the present invention for achieving the above object comprises an electron beam irradiation region for irradiating an object to be processed with an electron beam, and a sheet-shaped object to be processed. In an electron beam irradiation apparatus capable of irradiating an electron beam to an object to be processed by any of a continuous method of continuously carrying and a batch method of carrying an object to be processed in a tray and holding the tray with a tray carrier The tray carrier is provided with supporting means for supporting the sheet-shaped object to be processed, and when the sheet-shaped object to be processed is irradiated with an electron beam, the tray carrier is moved to the vicinity of the electron beam irradiation region. It is characterized by being configured to be located.

[0006]

According to the present invention, when the sheet-like object to be processed is irradiated with the electron beam, the tray carrier is moved to be positioned near the electron beam irradiation area.
The sheet-shaped object to be processed is supported by the supporting means provided on the tray carrier in the vicinity of the electron beam irradiation region.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are schematic configuration diagrams of an electron beam irradiation apparatus according to one embodiment of the present invention, FIG. 3 is a schematic plan view of a tray carrier used in this embodiment, and FIG. 4 is a switch for controlling the apparatus of this embodiment. It is a top view showing a class.

The electron beam irradiation apparatus shown in FIGS. 1 and 2 is of a so-called continuous type and batch type, and conveys an electron beam generating section 2, an electron beam irradiation region 4 and an object to be treated. Conveyance path 6, guide rollers 8a and 8b for guiding a sheet-shaped object (web) 50 when performing electron beam irradiation processing in a continuous method, and electron beam irradiation processing in a batch method In this case, a tray carrier 10 for holding and carrying a tray on which an object to be processed is placed is provided.

In the electron beam generator 2, a predetermined electric power is supplied to the filament to generate thermoelectrons, and the thermoelectrons are accelerated by the high voltage applied in the accelerating tube 12 to generate a curtain-shaped electron beam. In the electron beam irradiation region 4, the electron beam is taken out from the electron beam generating unit 2 through the irradiation window 14 partitioned by a titanium foil or the like, and the processed object 50 conveyed in the conveyance path 6 is irradiated with the electron beam.

Web adapters 16 are provided on both sides of the conveyance path 6.
a and 16b are provided, and the web inlets 18a and 18a,
It is connected to the web outlet 18b. Web entrance 1
The reason that 8a and the web outlet portion 18b are inclined with respect to the transport path 6 by a predetermined angle is to prevent leakage of X-rays. In this embodiment, the length of the transport path 6 is about 2 m,
The electron beam irradiation region 4 is formed in the middle of the transport path 6.
The guide rollers 8a and 8b are provided in the web adapters 16a and 16b, respectively, and the height H from the bottom surface of the conveyance path 6 to the upper portions of the guide rollers 8a and 8b is about 20 m.
m. In the initial state, the tray carrier 10
Is arranged at a predetermined position (the position shown in FIG. 1) on the left side of the transport path 6.

As shown in FIG. 3, the tray carrier 10 is formed in the shape of a frame, and is provided with four small rollers 22 formed on the left and right inner side surfaces and a frame for the upper and lower portions.
A large roller (or a cylindrical member) 24 that also serves as a supporting unit. The tray is held by these small rollers 22 and large rollers 24. The height from the bottom surface of the transport path 6 to the upper portion of the large roller 24 is about 20 mm. Further, as shown in FIG. 3, the tray carrier 10 has drive chain conveyors 26 attached to its left and right outer surfaces.
The tray carrier 10 moves by driving the chain conveyor 26 with a pulse motor or the like.

Although not shown, a sub-conveyance path is formed at a position lower than the conveyance path 6 so that the conveyance direction is at a right angle to the conveyance path 6. In the electron beam irradiation apparatus of the present embodiment, the tray is sent out and taken out at the front end portion of the sub transport path, and the tray is transported by the lifting device (not shown) between the transport path 6 and the sub transport path. I am configuring. This sub-transport path is used only in the batch system.

Further, as shown in FIG. 4, a conveyor system operation panel 30 and a select switch 40 are provided in the vicinity of the front end portion of the sub-conveyance path. On the conveyor system operation panel 30, a plurality of conveyor control switches 32 for controlling the chain conveyor 26 that moves the tray carrier 10, a door switch 34 for opening and closing the tray outlet and outlet doors, and a conveyor switch. A light emitting diode 36 for displaying the current position and traveling direction of the existing tray, and a "WEB STAN" switch 38 for moving the tray carrier 10 to the vicinity of the electron beam irradiation area 4 are provided. The select switch 40 is for passing the web 50 through the conveyance path 6 and outputting a high voltage and a beam current to the electron beam generator 2.

The operation of irradiating the web 50 with the electron beam in the electron beam irradiation apparatus of this embodiment will be described. First, the web 50 is inserted from the web adapter 16a on the web entrance side of the transport path 4, and the select switch 40 is set to "WE".
By setting B SET ”, the web 50 is conveyed to the conveying path 6
Pass through. When the passing of the web 50 is completed, the tray switch 10 is returned to the left side by turning off the select switch 40. Then, when the "WEB STAN" switch 38 of the conveyor system operation panel 30 is pressed, the light emitting diode 38a is turned on, the tray carrier 10 is moved from the left side of the transport path 6, and is in the vicinity of the electron beam irradiation area 4. Position where electron beam is not irradiated (Fig. 2
Stop at the position shown in. Incidentally, when the tray carrier 10 is irradiated with an electron beam, the tray carrier 10 is deteriorated or oxidized. Therefore, in this embodiment, the tray carrier 10 is stopped at the position shown in FIG. 2 in order to prevent these. However, the tray carrier 10 has an electron beam irradiation area 4
It may be located directly below. As a result, it is possible to reliably prevent the sheet-shaped object to be processed from hanging down.

In this way, the web 50 is supported by the guide rollers 8a and 8b and the rollers 24 and 24 located substantially in the middle of the conveying path 6. In this state, when the web 50 is sent out and the select switch 40 is turned “HV (high voltage) ON”, a high voltage and a beam current are output to the electron beam generator 2 and the generated electron beam is emitted in the electron beam irradiation region 4. The web 50 is irradiated. When the process is completed, set the select switch 40 to "OF
Then, the irradiation of the electron beam is terminated. Finally, by pressing the "WEB STAN" switch 38 of the conveyor system operation panel 30, the light emitting diode 38a is turned off, and the tray carrier 10 is returned to the original position of the transport path 6. Return to the position (position shown in FIG. 1).

In this embodiment, when the web is irradiated with the electron beam, the web is supported by the guide rollers, and the tray carrier is positioned near the electron beam irradiation area.
As compared with the conventional electron beam irradiation apparatus, the interval for supporting the web in the transport path can be reduced to about half. This allows
Prevents the web from drooping significantly in the electron beam irradiation area,
The desired electron beam irradiation treatment can be reliably applied to the web. Further, by forming the upper and lower frames of the tray carrier with rollers, the web can be smoothly transported.

In the above embodiment, the height from the bottom of the transport path to the top of the two large rollers of the tray carrier is
The case of forming the same as the height from the bottom surface of the transport path to the upper portion of the guide roller has been described, but the present invention is not limited to this, and the diameters of the two large rollers of the tray carrier are increased. Thus, the height to the upper part of the large roller may be larger than the height to the upper part of the guide roller. Further, of the two large rollers of the tray carrier, for example, one large roller has a smaller diameter than the other, and the web is supported by three points of the guide roller and one large roller of the tray carrier. It is also possible to do so.

[0018]

As described above, according to the present invention, when the sheet-shaped object to be processed is irradiated with the electron beam, the tray carrier provided with the supporting means is positioned near the electron beam irradiation region. As a result, the sheet-shaped object to be processed can be supported by the tray carrier even in the transport path, and therefore the interval for supporting the sheet-shaped object to be processed in the transport path becomes shorter than that in the conventional apparatus. An electron beam irradiation apparatus capable of preventing the sheet-shaped object from drooping significantly in the electron beam irradiation region and reliably performing a preset desired electron beam irradiation processing on the sheet-shaped object. Can be provided.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an electron beam irradiation apparatus that is an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of an electron beam irradiation apparatus that is an embodiment of the present invention.

FIG. 3 is a schematic plan view of a tray carrier used in this embodiment.

FIG. 4 is a plan view showing switches that control the apparatus of this embodiment.

FIG. 5 is a schematic configuration diagram of a conventional electron beam irradiation apparatus.

[Explanation of symbols]

 2 Electron Beam Generation Section 4 Electron Beam Irradiation Area 6 Conveyance Path 8a, 8b Guide Roller 10 Tray Carrier 12 Accelerator Tube 14 Irradiation Window 16a, 16b Web Adapter 18a Web Inlet 18b Web Outlet 22 Small Roller 24 Large Roller 26 Chain Conveyor 30 Conveyor system operation panel 32 Conveyor control switch 34 Door switch 36 Tray position display light emitting diode 38 "WEB STAN" switch 38a Light emitting diode 40 Select switch 50 Web

Claims (1)

[Claims] 1. A continuous method comprising an electron beam irradiation region for irradiating an object to be processed with an electron beam, and a continuous method for continuously transporting a sheet-like object to be processed, and the object to be processed is placed in a tray and the tray is held by a tray carrier. In an electron beam irradiation apparatus capable of irradiating an object to be processed with an electron beam by any of the batch methods of carrying the sheet, supporting means for supporting the sheet-shaped object to be processed is provided on the tray carrier, and the sheet is An electron beam irradiating device configured to move the tray carrier so as to be positioned in the vicinity of the electron beam irradiating region when irradiating an object to be processed with an electron beam.