CN109475837B - 光照射装置 - Google Patents
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Abstract
一种光照射装置,包含:保护管,在内部形成线材的插通路;光源部,沿着该保护管的上方相向配置;及槽状的凹面反射镜,与该光源部相向地设于上述保护管的下方侧,其中,提供如下的构造:将凹面反射镜设为拆卸自如而容易更换,并且极力避免热膨胀引起的凹面反射镜的变形。其特征在于,上述凹面反射镜收容于设于保持体的槽状的收容凹部中,并且在外表面具备沿水平方向延伸的凸缘部,上述凹面反射镜通过该凸缘部而拆装自如地固定于上述保持体。
Description
技术领域
本发明涉及一种向线材照射光的用光照射装置,特别是,涉及一种使线材表面的树脂固化的光照射装置。
背景技术
以往,已知有对线材照射紫外光而进行线材外表面的树脂涂层的固化或表面改性的光照射装置。例如,在光纤的制造过程中,出于形成光纤外表面的保护膜的目的,对其外表面进行树脂涂层。
例如,在日本特许5851837号公报(专利文献1)中,如图8所示,公开有将来自放电灯的放射光经由反射镜向线材的周围照射的光照射装置。在该光照射装置中,将放电灯101配置于聚光反射镜102的第一焦点,将插通于相向配置的保护管103内的线材104配置于第二焦点。通过该结构,将来自放电灯101的紫外线利用聚光反射镜102反射聚光,向插通于保护管103内的线材104照射而使其光固化。
在该现有技术中,存在涂布于线材的涂敷剂在搬送时飞散,会污染配置于周围的保护管的问题。当保护管被污染时,存在照射到线材的光衰减,难以有效地向线材进行光照射来进行固化的问题。因此,保护管需要定期更换,在更换操作时,当反射镜产生损伤或污垢时,由此可能会使反射率下降。
另外,该反射镜是对金属制的块体进行镜面精加工而制造成的,在考虑上述更换操作时,不能避免对反射镜的损伤。
另外,在日本特许第2892545号公报(专利文献2)中示出了一种将反射镜与反射镜保持体一体化,并对它们进行拆卸的结构,但在该结构中,存在反射镜的壁厚变薄,因热膨胀的影响而形状发生变形的问题。当由于热膨胀而反射镜的曲率改变时,存在焦点位置偏移,阻碍线材的有效的固化处理的问题。
现有技术文献
专利文献1:日本特许5851837号公报
专利文献2:日本特许2892545号公报
发明内容
发明所要解决的技术问题
本发明鉴于上述现有技术的问题点,提供一种如下的结构:向保护管内照射来自光源部的光,且利用相向配置的凹面反射镜将通过了保护管的光向保护管内反射而向保护管内的线材进行照射的光照射装置中,将凹面反射镜设为拆卸自如而容易更换,并且极力避免热膨胀引起的凹面反射镜的变形的结构。
用于解决问题的技术方案
为了解决上述问题,本发明的光照射装置的特征在于,包围保护管的凹面反射镜收容于设于保持体的槽状的收容凹部中,并且在外表面具备沿水平方向延伸的凸缘部,上述凹面反射镜通过该凸缘部而拆装自如地固定于上述保持体。
另外,其特征在于,上述反射镜具有比上述凸缘部向上方侧突出的突出部。
另外,其特征在于,上述反射镜的突出部具有比上述收容凹部的开口宽度大的最大外径部,上述凸缘部设于比上述最大外径部靠下方侧处。
另外,其特征在于,在上述反射镜与上述保持体之间夹有导热片。
发明效果
根据本发明的光照射装置,凹面反射镜收容于保持体的收容凹部内,通过沿水平方向延伸的凸缘部拆装自如地固定于该保持体,因此,凹面反射镜的拆装容易,而且,通过凸缘部进行固定,因此具有防止凹面反射镜因热影响而变形,能够进行有效的光照射的效果。
并且,凹面反射镜在比凸缘部靠光源部侧的上方处具有突出部,因此将来自光源部的紫外线有效地向保护管侧反射而实现有效利用。
另外,凸缘部设于比凹面反射镜的最大外径部靠下侧处,因此容易进行保持体向收容凹部的安装。
附图说明
图1是本发明的光照射装置的剖视图。
图2是第一实施例的局部剖视图。
图3是第二实施例的局部放大剖视图。
图4是第三实施例的放大剖视图。
图5是图4中的第三实施例的作用说明图。
图6是图2中的第一实施例的数值例。
图7是图4中的第三实施例的数值例。
图8是现有例的剖视图。
具体实施方式
图1表示本发明的光照射装置1,光照射装置1由上框体2和下框体3构成,这些上框体2和下框体3通过铰链4而转动自如地连结。
上框体2具有箱体21,在其内部内置有出射紫外线的由例如LED构成的光源部22和与其抵接的散热器23。该散热器23通过在第一冷却水流路24中流动的冷却水而被冷却,对光源部22进行冷却。并且,在箱体21的下部,与上述光源部22对应地形成有光透过用的开口25。
另一方面,下框体3由收容保持后述的凹面反射镜5的保持体31和与其抵接的冷却块32构成,在冷却块32中形成有第二冷却水流路33,冷却水在此流动。
如图2详细所示,在保持体31上形成有槽状的收容凹部34,在该收容凹部34上抵接并固定有槽状的凹面反射镜5。
并且,在凹面反射镜5的外表面形成有沿水平方向延伸的凸缘部51,利用螺丝7等固定该凸缘部51,从而将凹面反射镜5拆装自如地固定于保持体31。
另外,以被上述凹面反射镜5包围的方式设有保护管6,该保护管6具有紫外线透过性,由例如石英玻璃等构成。
保护管6的管轴中心为线材W的插通路,在此连续地搬运作为被处理物的线材W。在此,例如,线材W为对光纤的周面实施了树脂涂层的线材,通过光(紫外线)照射而该表面的树脂固化。另外,例如,线材W也可以是纤维材料,通过光照射而使其表面改性。
再次参照图1,如上所述,相对于在内部形成有线材W的插通路的保护管6,在其上方以沿着该保护管6的方式相向配置光源部22,在保护管6的下方侧,形成以与上述光源部22相向的方式配置有槽状的凹面反射镜5的配置构造。
这样,来自光源部22的光直接向保护管6内的线材W照射,并且由凹面反射镜5反射后的光向线材W进行照射。
通过设为上述结构,凹面反射镜5能够容易地从保持体31拆装,其保养检修和更换作业变得容易,并且利用凸缘部51固定于保持体31,因此由热膨胀引起的变形以对收容凹部34按压的方式作用,因此能够抑制其变形。
在图3中示出第二实施例,该实施例中,在凹面反射镜5与保持体31的收容凹部34之间夹有导热片8。
该导热片8由在橡胶、树脂等母材中分散有陶瓷、石墨、金属等构成的充填材料的部件等构成,使凹面反射镜5与保持体31之间的热传导良好,来提高该凹面反射镜5的冷却效果。
在图4中示出其他的第三实施例,在凹面反射镜5上形成有比凸缘部51向上方侧突出的突出部52。该突出部52具有比上述收容凹部34的开口宽度L大的最大外径部D,凹面反射镜5的开口宽度M小于该最大外径部D。并且,上述凸缘部51设于比该最大外径部D靠下方侧处。
由此,凹面反射镜5在比其最大外径部D靠下方侧与保持体31的收容凹部34抵接,其拆装作业变得容易。
另外,在该实施例中,凹面反射镜5的最大外径部D比收容凹部34的开口宽度L“大”,凸缘部51设于比最大外径部D靠“下方侧”处,但在最大限度上,使最大外径部D与收容凹部34的开口宽度L相等,将凸缘部51设于该最大外径部D,也能够得到相同的效果。
如图5所示,根据该第三实施例,来自光源部22的光中的如虚线所示那样在没有突出部52的情况下会偏离凹面反射镜5的光如实线所示地被突出部52反射而返回保护管6侧,作为向线材W照射的照射光被有效利用。
图6表示第三实施例的具体的一数值例。
<保持体>
收容凹部的开口宽度 36.0mm
收容凹部的深度 17.7mm
台阶深度 7.2mm
<凹面反射镜>
原材料 铝
厚度 0.5mm
开口宽度 35.0mm
凸缘部的宽度 10.3mm
<保护管>
厚度 1mm
外径 22.0mm
<线材>
直径φ0.25mm(在原始原材料φ0.125mm的表面涂覆厚度0.0625mm的树脂涂层)
图7示出第四实施例的具体的一数值例。
<凹面反射镜>
开口宽度 32.0mm
突出部的突出量 5.8mm
最大外径部的直径 37.0mm
另外,其他诸数值与图6的第三实施例的数值相同。
如以上所说明,在本发明的光照射装置中,将与光源部经由保护管而相向配置于相反侧的凹面反射镜利用其设置的凸缘部而拆装自如地固定于保持体的收纳凹部,因此得到以下效果:凹面反射镜的拆装简便,且通过在凸缘部固定而抑制热膨胀引起的变形。
附图标记说明
1 光照射装置
2 上框体
21 箱体
22 光源部(LED)
23 散热器
3 下框体
31 保持体
32 冷却块
34 收容凹部
4 铰链
5 凹面反射镜
51 凸缘部
52 突出部
6 保护管
8 导热片
W 线材
D (凹面反射镜的)最大外径部
L (收容凹部的)开口宽度。
Claims (4)
1.一种光照射装置,包含:
保护管,在内部形成线材的插通路;
光源部,沿着该保护管的上方相向配置;及
槽状的凹面反射镜,与该光源部相向地设于所述保护管的下方侧,
所述光照射装置的特征在于,
所述凹面反射镜收容于设于保持体的槽状的收容凹部中,并且在外表面具备沿水平方向延伸的凸缘部,
所述凹面反射镜通过该凸缘部而拆装自如地固定于所述保持体。
2.根据权利要求1所述的光照射装置,其特征在于,
所述反射镜具有比所述凸缘部向上方侧突出的突出部。
3.根据权利要求2所述的光照射装置,其特征在于,
所述反射镜的突出部具有比所述收容凹部的开口宽度大的最大外径部,
所述凸缘部设于比所述最大外径部靠下方侧处。
4.根据权利要求1~3中任一项所述的光照射装置,其特征在于,
在所述反射镜与所述保持体之间夹有导热片。
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JP2016-133295 | 2016-07-05 | ||
JP2016133295A JP6631799B2 (ja) | 2016-07-05 | 2016-07-05 | 光照射装置 |
PCT/JP2017/020588 WO2018008308A1 (ja) | 2016-07-05 | 2017-06-02 | 光照射装置 |
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CN109475837B true CN109475837B (zh) | 2020-12-18 |
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JPS5845738A (ja) * | 1981-09-16 | 1983-03-17 | Toshiba Electric Equip Corp | 紫外線照射器具 |
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US20190151819A1 (en) | 2019-05-23 |
CN109475837A (zh) | 2019-03-15 |
US10661246B2 (en) | 2020-05-26 |
JP2018001112A (ja) | 2018-01-11 |
WO2018008308A1 (ja) | 2018-01-11 |
JP6631799B2 (ja) | 2020-01-15 |
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