The utility model discloses a film-winding plate-pairing part under a stretching film, and the film-winding part under a stretching film-winding reel is driven by a traction motor for step-by-step traction. The distance of each step-by-step traction is the working distance of each plate of the packaging machine, and is characterized in that a film-locking device and a mark are arranged on the traction path of the film-winding under a stretching film. The film-locking device is equipped with a heating strip and a probe; when the probe is aligned with the plate cursor on the film-wrapping under the stretching film during the traction of the film-wrapping under the stretching film by the traction motor, the film-locking device acts to lock the film-wrapping under the stretching film, and the film-wrapping under the stretching film is locked and heated after the film-locking device has locked the film-wrapping under the stretching film. The film is heated under a tight stretched film. The utility model can lock and heat the membrane material in the step-by-step traction process of the stretching film under the film, so that the film material can be stretched to the actual working distance of each plate without springback, so as to realize the accurate plate matching of the stretching film under the film, with simple structure and ingenious design.
【技术实现步骤摘要】
拉伸膜下绕膜对版部件
本技术涉及一种拉伸膜包装设备,具体涉及一种全自动拉伸膜包装机的拉伸膜下绕膜对版部件。
技术介绍
现有技术的全自动拉伸膜包装机,所用的拉伸膜下绕膜膜材,由于其拉伸性能、收缩性能以及其它性能方面的差异,膜材印刷后的对版光标距离比包装机实际每版工作距离要小(例如包装机每版工作距离为500mm,膜材对版光标距离为499mm),而且更为重要的是,膜材上印刷的对版光标的距离要应膜材性能、膜材厚度等因素而适当改变,印刷本身也存在误差,因此这种情况需要严格控制并调整拉伸膜下绕膜的放卷张力,不仅结构复杂,而且很难实施拉伸膜下绕膜的准确对版,申请人于2017年1月17日申请的专利号201720050929.4、专利名称“膜料纠偏装置”的专利技术就存在以上问题。即使采用锁膜装置对步进牵引过程中的膜材进行锁紧使膜材的对版光标距离被硬拉至包装机每版工作距离,但锁膜装置松开后膜材不可避免会出现回弹现象,使得与对标装置对准的膜材前一对版光标向锁膜方向微量窜移、膜材后一对版光标离对标装置的距离会变得较近,这样下次步进牵引时膜材实际走的距离会在相应变小的情况下被锁膜装置锁紧( ...
【技术保护点】
1.拉伸膜下绕膜对版部件,包括拉伸膜下绕膜放卷轴,拉伸膜下绕膜放卷轴所放卷的拉伸膜下绕膜经导向辊的导向后由牵引电机驱动进行步进牵引,每次步进牵引的距离为包装机每版工作距离,其特征在于:拉伸膜下绕膜的牵引路径上设有锁膜装置和对标装置,锁膜装置设有加热条,对标装置设有探头;在牵引电机对拉伸膜下绕膜进行牵引过程中、探头与拉伸膜下绕膜上的对版光标对准时,锁膜装置动作将拉伸膜下绕膜进行锁紧,在锁膜装置将拉伸膜下绕膜进行锁紧后,加热条对锁紧的拉伸膜下绕膜进行加热。
【技术特征摘要】
1.拉伸膜下绕膜对版部件,包括拉伸膜下绕膜放卷轴,拉伸膜下绕膜放卷轴所放卷的拉伸膜下绕膜经导向辊的导向后由牵引电机驱动进行步进牵引,每次步进牵引的距离为包装机每版工作距离,其特征在于:拉伸膜下绕膜的牵引路径上设有锁膜装置和对标装置,锁膜装置设有加热条,对标装置设有探头;在牵引电机对拉伸膜下绕膜进行牵引过程中、探头与拉伸膜下绕膜上的对版光标对准时,锁膜装置动作将拉伸膜下绕膜进行锁紧,在锁...
【专利技术属性】
技术研发人员:陈世帮,郑顺存,
申请(专利权)人:温州瑞驰机械有限公司,
类型:新型
国别省市:浙江,33
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