An irradiation device and a transmission method for a large tension band

Abstract

The application discloses a kind of big tension strip's irradiation device and transmission method, comprising: EB illuminator, and with its cooperation shield cover, further comprising: in space relative arrangement, and with shield cover jointly constructed to obtain the upper shielding component of strip transmission passage, lower shielding component;It is arranged between upper shielding component, lower shielding component, and by position layout makes the feeding section of transmission passage, discharge section have more than two bending in space transmission component;Wherein, the upper shielding component, lower shielding component are using lead steel composite structure;The transmission component includes multiple roll cylinders arranged according to predetermined distance, predetermined position, and the support base of each roll cylinder is arranged on the external independent rigid structure by passing through lower shielding component.This application can effectively shield rays, also has small volume, light weight, can reduce manufacturing cost, is conducive to the application of strip surface coating curing and high molecular thin film irradiation modification technology.

Description

Technical Field

[0001] This invention relates to the field of irradiation technology. More specifically, this invention relates to an irradiation apparatus and transmission method for high-tension strip materials. Background Technology

[0002] In the fields of electron beam radiation coating curing of tapes and radiation modification of polymer materials, electron beam energies are relatively low, ranging from 70 to 250 keV. Using steel to construct the transport shielding structure results in problems such as large size, heavy weight, and high cost. Lead has high shielding efficiency against low-energy X-rays, but lead is too soft and cannot maintain dimensional accuracy or withstand the necessary tension for tape transport.

[0003] In order to adapt to the characteristics of high-tension belts during transmission, existing technologies mostly use large-size rollers for transmission. This type of large-size roller transmission requires water cooling and a high-power drive motor, resulting in a complex overall structure, high cost, and troublesome replacement and maintenance. Summary of the Invention

[0004] One object of the present invention is to solve the above-mentioned problems and / or defects, and to provide advantages that will be described later.

[0005] To achieve these objectives and other advantages of the present invention, an irradiation device for high-tension strip is provided, comprising: an EB irradiator and a shielding cover that cooperates therewith, and further comprising: The upper and lower shielding components are spatially relative to each other and together with the shielding cover, they form the strip transmission path. A transmission component that is positioned between the upper and lower shielding components, and whose positional layout allows the feed and discharge sections of the transmission path to have two or more bends in space. Both the upper shielding component and the lower shielding component adopt a lead-steel composite structure. The transmission component includes multiple rollers arranged at predetermined distances and positions, and the support base of each roller passes through the lower shielding component and is set on an external independent rigid structure.

[0006] Preferably, the lead-steel composite structure includes: A stainless steel layer with a thickness of 2–10 mm; The lead layer attached to the outside of the stainless steel layer has a thickness of 1 to 15 mm.

[0007] Preferably, the internal clearance of the transmission path is 2 to 15 mm.

[0008] Preferably, a rectangular hole is provided in the middle of the upper shielding component to form a stepped shielding structure I in space; The shielding cover is equipped with a stepped shielding structure II that cooperates with the stepped shielding structure I; Among them, a gas-sealing material is provided at the junction of the stepped shielding structure I and the stepped shielding structure II.

[0009] Preferably, the upper shielding component has 90-degree bends at both lateral ends; The lower shielding component has grooves I at both ends in the lateral direction, which are formed by bending to fit the bent portion. Wherein, the bending height of the groove I on the side near the strip is greater than that on the other side, so as to form a stepped shielding structure III in space; An elastic sealing element I is provided at the position where the bent part contacts the groove I.

[0010] Preferably, the upper shielding assembly has grooves II symmetrically arranged on both sides that cooperate with the shielding cover by bending, for accommodating the air intake pipe I; The upper shielding assembly has a groove III on one side of the groove II for gas sampling; The upper shielding assembly has an air inlet pipe II configured at the strip inlet by bending.

[0011] Preferably, the lower shielding assembly has grooves VI, the same number as the number of rollers, formed by bending. The bottom of the groove VI is provided with a through hole for the support base to extend to the outside of the channel; A shell-penetrating shielding mechanism is provided at the through hole.

[0012] Preferably, the shielding cover is provided with a groove V through bending, into which the upper shielding component can extend; An elastic sealing element II is provided at the position where the upper shielding component contacts the groove V.

[0013] A method for irradiation transmission of high-tension strip material involves using multiple rollers arranged at predetermined distances and positions, along with upper and lower shielding components, to construct a large-span, multi-bend transmission path in space to block the internal rays generated by the EB irradiator during irradiation treatment of the high-tension strip material.

[0014] The present invention has at least the following beneficial effects: The present invention uses multiple small-sized rollers, and through the upper shielding component and the lower shielding component, and the spatial arrangement of each roller, to form a multi-fold (or bent) transmission channel (or transmission path), which can effectively prevent internal rays from leaking into the external environment from the material inlet and outlet side and the output side. It can effectively shield rays and also has the effects of small size and light weight. Furthermore, both the upper and lower shielding components of this invention adopt a lead-steel composite structure, which enables them to withstand greater strip transmission tension, while reducing manufacturing costs and promoting the development of strip surface coating curing and polymer film irradiation modification. Furthermore, this invention directly fixes the roller base to an external, independent rigid structure, overcoming the shortcomings of insufficient rigidity in the outer lead and inner steel structure. Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0015] Figure 1 This is an overall cross-sectional view of an irradiation device for high-tension strip in one embodiment of the present invention; Figure 2 for Figure 1 Enlarged schematic diagram of the mating point between the middle shield and the upper shield assembly.

[0016] Figure 3 This is a cross-sectional view of a high-tension strip irradiation device from another perspective in one embodiment of the present invention; Figure 4 This is a schematic diagram of the layout of the air inlet pipe II at the strip inlet in one embodiment of the present invention; Figure 5 This is a schematic diagram of another layout of the air inlet pipe II at the strip inlet in one embodiment of the present invention; Figure 6 This is a schematic diagram of another layout of the air inlet pipe II at the strip inlet in one embodiment of the present invention; Figure 7 This is a schematic diagram of another layout of the air inlet pipe II at the strip inlet in one embodiment of the present invention; Figure 8 This is a schematic diagram of the layout of the air supply duct in the transmission path. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0018] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0019] It should be noted that in the description of this invention, the orientations or positional relationships indicated by terms are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Furthermore, in this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first and second features are in indirect contact through an intermediate medium. Moreover, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] Example 1 An irradiation device for high-tension strip, the structure of which is as follows: Figure 1-2 As shown, it includes: an EB irradiator 1, and a shielding cover 2 that works with it, and also includes: The upper shielding component 3 and the lower shielding component 4 are arranged relative to each other in space and together with the shielding cover 2 to form the transmission path of the strip 13; The upper shielding component 3 and the lower shielding component 4 are arranged between each other. The feeding section and the discharging section of the transmission passage 5 have two or more bending transmission components in space through the position layout. The internal net height of the transmission passage is 2 to 15 mm. The upper shielding component 3 and the lower shielding component 4 both adopt a lead-steel composite structure, which includes: A stainless steel layer with a thickness of 2–10 mm; The lead layer 7, with a thickness of 1–15 mm, is attached to the outside of the stainless steel layer. In this structure, the stainless steel inside the channel is suitable for various corrosive gas environments generated by irradiation, such as ozone generated by irradiation in air. The rigidity of the stainless steel is sufficient to support the externally attached lead material and ensure the accuracy and non-deformation of the channel dimensions. Its construction is simple and lightweight, and since the lead material is on the outside, no special anti-corrosion treatment is required. However, because this scheme uses lead as the main shielding material, but the vertical distance in the channel is relatively large, the effect of blocking radiation leakage into the external environment through the channel is slightly poor. Therefore, it is necessary to increase the bending angle of the channel, lengthen the channel, and increase the number of bends in the channel to ensure that the radiation does not leak into the external environment. It is also suitable for irradiation transmission of high-tension strip 13. The transmission component includes multiple rollers 8 arranged at predetermined distances and positions, and the support base 9 of each roller 8 passes through the lower shielding component and is set on an external independent rigid structure. Working principle: In practical applications, this solution uses multiple small-sized rollers to form a multi-fold conveying channel, preventing internal radiation from leaking into the external environment; The inner sides of the upper and lower shielding components are made of stainless steel, which serves to position the dimensions and support the lead shielding material on the outside. The stainless steel on the upper and lower sides of the channel is 2-5 mm thick, and the stainless steel on the two sides of the transverse side is 2-10 mm thick. A layer of lead material is attached to the outside of the stainless steel as the main radiation shielding material. To accommodate the transport of high-tension strip 13, the support base 9 of roller 8 is passed through the shielding assembly and directly fixed to an external independent rigid structure, overcoming the shortcomings of insufficient rigidity of the outer lead and inner steel structure. In addition, this solution does not have any mechanical rotating parts passing through the shielding assembly; only the stationary base part passes through the shielding assembly, thus simplifying the fabrication of radiation shielding and gas sealing.

[0023] Example 2 This second embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 1-2 As shown, it discloses the following improvements based on implementation method 1: A rectangular hole 10 is provided in the middle of the upper shielding component to form a stepped shielding structure I11 in space; The shielding cover is provided with a stepped shielding structure II12 that cooperates with the stepped shielding structure I11; Among them, a gas sealing material is provided at the joint between the stepped shielding structure I11 and the stepped shielding structure II12, which is the elastic sealing element II19 described later.

[0024] Working principle: A rectangular hole is opened in the middle of the upper shielding component to form a stepped shielding structure I, which corresponds to the stepped shielding structure II of the irradiator shielding component (also known as the shielding cover) of the EB irradiator. Gas sealing material is provided at the joint to form a radiation shielding and gas-tight structure together. The gas sealing material is preferably fluororubber or lead-containing fluororubber.

[0025] Example 3 This third embodiment is a preferred embodiment of the present invention, such as... Figures 2-3 As shown, it discloses the following improvements based on implementation method 1: The upper shielding component 3 has 90-degree grooves I15 at both ends in the lateral direction; The lower shielding component 4 has two lateral ends that are bent to form bent portions 14 that cooperate with the groove I 15. The bending height of the groove I15 on the side near the strip 13 is greater than that on the other side, so as to form a stepped shielding structure III16 in space; An elastic sealing element I17 is provided at the position where the bent part contacts the groove I15 of 14. In this structure, the upper shielding component 3 and the lower shielding component 4 are arranged opposite each other to form a multi-fold channel. The number of bends in the inlet and outlet sections of the strip 13 is greater than or equal to 2. In this structure, lead is attached to the stainless steel surface, and the upper shielding component and the lower shielding component are arranged opposite each other to form a multi-fold channel. The number of bends in the inlet and outlet sections of the strip 13 is greater than or equal to 2. The net height inside the channel ranges from 2 to 15 mm. That is, through the design of inner steel and outer lead, the spacing between the lead materials on the inner side of the channel in the shielding device can be smaller, which is more beneficial to preventing radiation from leaking into the external environment through the channel. The bending angle of the channel can be appropriately reduced, the size of the channel can be shortened, and the number of bends in the channel can be reduced. Moreover, the rigid support layer is located on the inner side of the channel, which can separate the outer lead layer from the corrosive gas in the channel. It also has a large space, the structural size is not limited, the range of materials to be selected is wider, and it can be made into a very rigid structure, which is suitable for the needs of various tension transmission of the strip 13. The shielding cover 2 is provided with a groove V18 through bending, into which the upper shielding component can be inserted; An elastic sealing element II19 is provided at the position where the upper shielding component 3 contacts the groove V18.

[0026] Working principle: The shielding component has a 90-degree bend at both ends in the horizontal direction. The lower shielding component and the upper shielding component form a matching bend groove structure in the horizontal direction. The upper shielding component is on the outside and the lower shielding component is on the inside, forming a shielding step structure. Gas sealing material is configured as an elastic seal to block the exchange of internal and external gases. The gas sealing material is preferably fluororubber or lead-containing fluororubber. The advantage of using fluororubber is its resistance to radiation, while choosing lead-containing fluororubber can simultaneously achieve gas sealing and radiation shielding.

[0027] Example 4 This embodiment 4 is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 3 As shown, it discloses the following improvements based on implementation method 1: The upper shielding assembly has grooves II21 symmetrically arranged on both sides that cooperate with the shielding cover by bending, which are used to accommodate the air intake pipe I20; The upper shielding component 3 has a groove Ⅲ22 for gas sampling arranged on one side of the groove Ⅱ21; The upper shielding component 3 is equipped with an air inlet pipe II 23 at the strip inlet by bending.

[0028] Working principle: The upper shielding assembly is provided with two grooves II21 for accommodating the air inlet pipes I20. The air inlet pipes I20 are symmetrically arranged on both sides of the EB irradiator 1, and each air inlet pipe I20 is equipped with an air supply port A (e.g., Figure 8 (as shown) An air inlet pipe II 23 is configured at the strip inlet by bending, and an air outlet B is configured on the air inlet pipe II 23 (its layout is the same as that of the air outlet A). Figure 6 As shown, in one application scenario, the air inlet pipe II 23 is only set at the strip inlet and is located directly above the first roller. Nitrogen gas is blown towards the bonding line between the roller and the strip (i.e., nitrogen gas is blown towards the upper surface of the strip). The length of the air outlet B is greater than the length of the roller surface. The nitrogen gas outlet is matched with the rotating surface of the roller to prevent external gas from being carried into the shielding channel by the moving strip. The back of the strip is isolated by the roller bonding. In another application scenario, such as Figure 7 As shown, the air inlet pipe II23 can also be set at the strip inlet, and the air inlet pipe II23 is located upstream of the first roller; Furthermore, in one application scenario, at the strip inlet, an air inlet pipe II is configured at both the top and bottom. Nitrogen gas is blown onto the top and bottom surfaces of the strip through nitrogen gas inlets B on the air inlet pipe II, preventing external gases from being carried into the shielding channel by the moving strip from both sides. Specifically, such as... Figures 4-5As shown, the air inlet pipe II 23 can be configured as two pipes, one above the other. That is, the lower shielding component 4 is also configured with an air inlet pipe II at the strip inlet by bending. Nitrogen gas is blown onto the upper and lower surfaces of the strip at the same time to prevent external gas from being carried into the shielding channel by the moving strip. As needed, the two air inlet pipes II 23 can be set at the upstream or downstream of the first roller. In addition, the upper shielding assembly is provided with two grooves III22 on one side of groove II21. Grooves III22 are symmetrically arranged on both sides of the irradiator, and each is equipped with a gas detection port 24. After the sampled gas is mixed, it is transported to a dedicated online gas monitor for gas analysis through a matching pipeline.

[0029] Example 5 This fifth embodiment is a preferred embodiment of the present invention, and its specific structure is as follows: Figure 3 As shown, it discloses the following improvements based on implementation method 1: The lower shielding component 4 is provided with grooves VI25, the same number as the rollers, by means of bending. The bottom of the groove VI25 is provided with a through hole for the support base 9 to extend to the outside of the channel; A shell-penetrating shielding mechanism is provided at the through hole.

[0030] Working principle: The lower shielding component 4 is provided with the same number of grooves VI25 as the rollers 8 for placing the rollers. The bottom of each groove VI25 has an opening to allow the support base to extend outside the channel. The base is anchored, fixed, and adjusted on the external rigid support component. In addition, the base and the opening of the lower shielding assembly have corresponding through-shell shielding mechanisms 26. The through-shell shielding mechanism includes a radiation shielding structure and a gas sealing structure. The radiation shielding structure is a lead block set on both sides of the through hole to block radiation. According to actual needs, the lead block can be set with a concave stepped structure to form a shielding structure that can generate refraction at the through hole. A gas sealing structure is set in the stepped structure inside to seal the gas inside through a flexible gas sealing structure to prevent leakage.

[0031] A method for irradiation transmission of high-tension strip material involves using multiple rollers arranged at predetermined distances and positions, along with upper and lower shielding components, to construct a large-span, multi-bend transmission path in space to block the internal rays generated by the EB irradiator during irradiation treatment of the high-tension strip material.

[0032] The above solutions are merely illustrative examples of preferred embodiments and are not intended to limit the scope of the invention. Appropriate substitutions and / or modifications can be made according to user needs when implementing this invention.

[0033] The number of devices and processing scale described herein are for the purpose of simplifying the description of the invention. Applications, modifications, and variations of the invention will be readily apparent to those skilled in the art.

[0034] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Other modifications can be readily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and examples shown and described herein.

Claims

1. An irradiation device for high-tension strip, comprising: An EB irradiator and a shielding cover thereof, characterized in that it further comprises: The upper and lower shielding components are spatially relative to each other and together with the shielding cover, they form the strip transmission path. A transmission component that is positioned between the upper and lower shielding components, and whose positional layout allows the feed and discharge sections of the transmission path to have two or more bends in space. Both the upper shielding component and the lower shielding component adopt a lead-steel composite structure. The transmission component includes multiple rollers arranged at predetermined distances and positions, and the support base of each roller passes through the lower shielding component and is set on an external independent rigid structure.

2. The irradiation device for high-tension strip as described in claim 1, characterized in that, The lead-steel composite structure includes: A stainless steel layer with a thickness of 2–10 mm; The lead layer attached to the outside of the stainless steel layer has a thickness of 1 to 15 mm.

3. The irradiation device for high-tension strip as described in claim 1, characterized in that, The internal clearance of the transmission path is 2–15 mm.

4. The irradiation device for high-tension strip as described in claim 1, characterized in that, A rectangular hole is provided in the middle of the upper shielding component to form a stepped shielding structure I in space; The shielding cover is equipped with a stepped shielding structure II that cooperates with the stepped shielding structure I; Among them, a gas-sealing material is provided at the junction of the stepped shielding structure I and the stepped shielding structure II.

5. The irradiation device for high-tension strip as described in claim 1, characterized in that, The upper shielding component has 90-degree bends at both ends in the lateral direction. The lower shielding component has grooves I at both ends in the lateral direction, which are formed by bending to fit the bent portion. Wherein, the bending height of the groove I on the side near the strip is greater than that on the other side, so as to form a stepped shielding structure III in space; An elastic sealing element I is provided at the position where the bent part contacts the groove I.

6. The irradiation device for high-tension strip as described in claim 1, characterized in that, The upper shielding assembly has grooves II symmetrically arranged on both sides that cooperate with the shielding cover by bending, which are used to accommodate the air intake pipe I; The upper shielding assembly has a groove III on one side of the groove II for gas sampling; The upper shielding assembly has an air inlet pipe II configured at the strip inlet by bending.

7. The irradiation device for high-tension strip as described in claim 1, characterized in that, The lower shielding assembly has grooves VI, the same number as the rollers, formed by bending. The bottom of the groove VI is provided with a through hole for the support base to extend to the outside of the channel; A shell-penetrating shielding mechanism is provided at the through hole.

8. The irradiation device for high-tension strip as described in claim 1, characterized in that, The shielding cover is provided with a groove V through bending, into which the upper shielding component can extend; An elastic sealing element II is provided at the position where the upper shielding component contacts the groove V.

9. A method for irradiation transmission of high-tension strip, employing the irradiation device for high-tension strip as described in any one of claims 1-8, characterized in that, When the high-tension strip is irradiated by the irradiation device, multiple rollers arranged at predetermined distances and positions, together with upper and lower shielding components, construct a large-span, multi-bend transmission path in space to block the internal rays generated by the EB irradiator.

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