The utility model relates to a heat shrinkable film leveling dual-purpose roll, which comprises a hollow roll body, and the outer circumference of the roll body is covered with a soft sponge layer. A number of strip holes are opened along the radial direction of the roll body, and the strip holes are distributed along the circumferential and axial direction of the roll body. Along the axial and radial section of the roll body, the strip hole is convex type. The roller is fitted with a rotating shaft, and the outer wall of the rotating shaft is attached to the circumferential wall of the roller, and the rotating shaft can rotate relative to the roll body. The outer circumference of the rotating shaft is fixed with a connecting disc connected with the roll body. A convex block matching the strip hole is inserted into the Striped hole. The convex block comprises a magnetic wide body block and a narrow body ejection block without magnetism. The wide body block can slide in the strip hole and does not slide out of the outer wall of the roller body. There are several magnetic blocks in the outer wall of the rotating shaft, and the positions of the convex block and the magnetic block correspond in turn. The magnetic opposite of the two adjacent wide body blocks along the roller body circumference is opposite to the two adjacent magnetic blocks along the rotating axis. There are many groups of hair clusters on the outside of the crest of the narrow body.
【技术实现步骤摘要】
一种热收缩膜展平导向两用辊
本技术属于吹膜设备
,尤其涉及一种热收缩膜展平导向两用辊。
技术介绍
随着社会的发展,热收缩膜包装袋的使用越来越广泛,尤其是在商品包装方面的应用,采用收缩薄膜包裹在产品或包装件外面,经过加热,使收缩薄膜收缩裹紧产品或包装件,充分显示物品的外观,提高产品的展销性,增加美观及价值感。经过热收缩机包装后的物品能密封、防潮、防污染,并保护商品免受来自外部的冲击,具有一定的缓冲性。吹膜机在生产中,人字夹板把圆筒状的膜管叠成双折薄膜,人字夹板一般由多根导辊组成,薄膜经过多组导向辊后进行收卷操作。在收卷前,还需要由带有展平功能的展平辊或导辊进行展平,防止出现褶皱。现有的导辊存在诸多缺点:首先,导辊稍微存在不平行或变形的问题,则容易将刚刚吹胀的塑料膜拉伤,进而起皱;其次,以往的展平辊多采用自左右两侧逐渐向中间拱起的拱形辊,当塑料膜经过拱形辊时,会自然而然地向两侧伸展而达到展平目的,但不同种类的塑料膜展平时要求的辊弯度不同,如果辊弯度太大,则可能造成塑料膜过度拉伸,也会造成塑料膜拉伤,反之,如果辊弯度太小,则展平不到位,展平效果差,现有的拱形辊的弯 ...
【技术保护点】
一种热收缩膜展平导向两用辊,其特征是:包括空心管状辊体(1),在辊体(1)的外周壁包覆有软质海绵层(12);沿辊体(1)的径向贯穿开设有多个条形孔(11),且条形孔(11)沿辊体(1)的周向和轴向分布;条形孔(11)沿辊体(1)的轴向和径向截面均呈凸字型,且凸字型条形孔(11)的外端和内端分别位于辊体(1)的外壁和内壁;在辊体(1)内插设有转轴(3),转轴(3)外周壁与辊体(1)的内周壁相贴,且转轴(3)可相对于辊体(1)自转;在转轴(3)的外周壁固接有挡在辊体(1)两端部的法兰状连接盘(31),所述连接盘(31)与辊体(1)通过紧固件(33);在条形孔(11)内插设有沿辊 ...
【技术特征摘要】
1.一种热收缩膜展平导向两用辊,其特征是:包括空心管状辊体(1),在辊体(1)的外周壁包覆有软质海绵层(12);沿辊体(1)的径向贯穿开设有多个条形孔(11),且条形孔(11)沿辊体(1)的周向和轴向分布;条形孔(11)沿辊体(1)的轴向和径向截面均呈凸字型,且凸字型条形孔(11)的外端和内端分别位于辊体(1)的外壁和内壁;在辊体(1)内插设有转轴(3),转轴(3)外周壁与辊体(1)的内周壁相贴,且转轴(3)可相对于辊体(1)自转;在转轴(3)的外周壁固接有挡在辊体(1)两端部的法兰状连接盘(31),所述连接盘(31)与辊体(1)通过紧固件(33);在条形孔(11)内插设有沿辊体(1)的轴向和径向截面均呈凸字型的凸块(2),凸块(2)包括内侧带磁性的宽体挡块(21)和外侧不带磁性的窄体顶出块(22),宽体挡块(21)可在条形孔(11)内滑动且不滑出辊体(1)的外周壁;在转轴(...
【专利技术属性】
技术研发人员:汤生印,
申请(专利权)人:天津裕坤包装制品股份有限公司,
类型:新型
国别省市:天津,12
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