CN202592742U - 双向拉伸薄膜的纵向拉伸机 - Google Patents

双向拉伸薄膜的纵向拉伸机 Download PDF

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CN202592742U
CN202592742U CN2012201194142U CN201220119414U CN202592742U CN 202592742 U CN202592742 U CN 202592742U CN 2012201194142 U CN2012201194142 U CN 2012201194142U CN 201220119414 U CN201220119414 U CN 201220119414U CN 202592742 U CN202592742 U CN 202592742U
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张春华
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GUANGDONG SHICHENG PLASTIC MACHINERY CO Ltd
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GUANGDONG SHICHENG PLASTIC MACHINERY CO Ltd
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Abstract

本实用新型公开一种双向拉伸薄膜的纵向拉伸机,包括有可容塑料膜呈S形绕行的预热辊组、拉伸辊组以及保温定型辊组,其中预热辊组、拉伸辊组以及保温定型辊组中的每条辊均是由伺服电机驱动其转动,可以精确控制每条辊的转速。特别是拉伸辊组,通过调节其前后拉伸辊的转速比,来实现拉伸辊组拉伸薄膜的拉伸比在工艺要求范围内可调,以适应不同产品的工艺要求。

Description

双向拉伸薄膜的纵向拉伸机
技术领域
本实用新型涉及双向拉伸薄膜的加工设备技术领域,尤其是涉及到纵向拉伸机。 
背景技术
双向拉伸薄膜是将高分子塑料的熔体通过狭长模头流涎成膜状,然后在专用的拉伸机内,在一定的温度和设定的速度下,进行纵向和横向上的拉伸,并经过适当的冷却或热处理或特殊的加工(如电晕、涂覆等)制成的薄膜。 
双向拉伸薄膜的纵向拉伸机是由预热辊组、拉伸辊组以及保温定型辊组组成,预热辊组和保温定型辊组分置于拉伸辊组的输入侧和输出侧。传统的纵向拉伸机,其拉伸辊组均是由一个动力源来驱动拉伸辊转动,每条拉伸辊各自与传动比依次增大的传动副驱动连接,以驱动拉伸辊组的拉伸辊的转速逐渐增大,由此来实现将厚膜逐渐拉伸成薄膜。由于传动副的传动比是固定不变的,所以,拉伸辊组拉伸成薄膜的拉伸比也是不变的,对于需要用不同的拉伸比来拉伸的薄膜,传统的纵向拉伸机显然难以满足需要。因此,有必要对现有的纵向拉伸机作出改进,使得纵向拉伸机的拉伸比在工艺要求范围内可调,以适应不同的工艺要求。 
实用新型内容
本实用新型要解决的技术问题是提供一种可调节拉伸比的双向拉伸薄膜的纵向拉伸机。 
为解决上述技术问题所采用的技术方案:一种双向拉伸薄膜的纵向拉伸机,包括有可容塑料膜呈S形绕行的预热辊组、拉伸辊组以及保温定型辊组,预热辊组和保温定型辊组分置于拉伸辊组的输入侧和输出侧,其中预热辊组的预热辊和保温定型辊组的定型辊均为内设流道的中空辊;预热辊组的输入侧和输出侧预热辊上均设有由气缸驱动压紧在预热辊上的压辊;保温定型辊组的输入侧和输出侧定型辊上均设有由气缸驱动压紧在定型辊上的压辊;拉伸辊组的从输入侧第二条拉伸辊起,每条拉伸辊上均设有由气缸驱动压紧在拉伸辊辊上的压辊,其特征在 于:所述每条预热辊、拉伸辊以及定型辊各自与一伺服电机驱动连接。 
在上述基础上,所述拉伸辊与伺服电机之间通过万向传动轴驱动连接。 
采用本实用新型所带来的有益效果:本实用新型预热辊组、拉伸辊组以及保温定型辊组中的每条辊均是由伺服电机驱动其转动,可以精确控制每条辊的转速。特别是拉伸辊组,通过调节其前后拉伸辊的转速比,来实现拉伸辊组拉伸薄膜的拉伸比在工艺要求范围内可调,以适应不同产品的工艺要求。 
附图说明
图1为本实用新型双向拉伸薄膜的纵向拉伸机的主视图; 
图2为本实用新型双向拉伸薄膜的纵向拉伸机的立体图; 
图3为本实用新型拉伸辊组的立体图。 
具体实施方式
如图1-3所示,一种双向拉伸薄膜的纵向拉伸机,包括有可容塑料膜呈S形绕行的预热辊组1、拉伸辊组2以及保温定型辊组3,预热辊组1和保温定型辊组3分置于拉伸辊组2的输入侧和输出侧。其中预热辊组1的预热辊1.1和保温定型辊组3的和定型辊3.1均为内设流道的中空辊,流道内通以加热流体,使辊面达到一定的温度,保证薄膜在输送到拉伸辊组2前被预热辊组1加热到所需的拉伸工艺温度,在完成拉伸后被保温定型辊组3继续加热保温定型,使薄膜的温度维持在进入下一工序(横向拉伸)时所需的拉伸工艺温度。为了防止薄膜在输送时出现打滑现象,在预热辊组1的输入侧和输出侧的预热辊1.1上均设有由气缸1.2驱动把薄膜压紧在预热辊1.1上的压辊1.3;保温定型辊组3的输入侧和输出侧的定型辊3.1上均设有由气缸3.2驱动把薄膜压紧在定型辊3.1上的压辊3.3;拉伸辊组2的从输入侧第二条拉伸辊2.1起,每条拉伸辊2.1上均设有由气缸2.2驱动把薄膜压紧在拉伸辊2.1上的压辊2.3。 
特别地,本实施例中的每条预热辊1.1、拉伸辊2.1以及定型辊3.1各自与一伺服电机4驱动连接,通过伺服电机4的精确控制来调节每条辊的转速,使预热辊组1各辊转速一致,使拉伸辊组2各辊转速顺着输送方向逐渐增大,使保温定型辊组3各辊转速一致。通过调节拉伸辊组2前后拉伸辊的转速比,来实现拉 伸辊组2拉伸薄膜的拉伸比在工艺要求范围内可调,以适应不同产品的工艺要求。 
在上述基础上,拉伸辊2.1与伺服电机4之间通过万向传动轴5驱动连接。由于拉伸辊2.1的辊径远小于预热辊1.1和定型辊3.1的辊径,为了追求设备的小型化、紧凑化,所以拉伸辊2.1之间的距离比较紧凑,没有足够的空间直接在机组的侧面布设伺服电机4。因此把连接拉伸辊2.1的伺服电机4的安装机架6移出到机组的外侧,以保证伺服电机4具有足够的安装空间,然后通过万向传动轴5解决拉伸辊2.1和伺服电机4之间出现的轴向偏差,以便于机组的安装和维护。 

Claims (2)

1.一种双向拉伸薄膜的纵向拉伸机,包括有可容塑料膜呈S形绕行的预热辊组、拉伸辊组以及保温定型辊组,预热辊组和保温定型辊组分置于拉伸辊组的输入侧和输出侧,其中预热辊组的预热辊和保温定型辊组的定型辊均为内设流道的中空辊;预热辊组的输入侧和输出侧预热辊上均设有由气缸驱动压紧在预热辊上的压辊;保温定型辊组的输入侧和输出侧定型辊上均设有由气缸驱动压紧在定型辊上的压辊;拉伸辊组的从输入侧第二条拉伸辊起,每条拉伸辊上均设有由气缸驱动压紧在拉伸辊辊上的压辊,其特征在于:所述每条预热辊、拉伸辊以及定型辊各自与一伺服电机驱动连接。
2.根据权利要求1所述的双向拉伸薄膜的纵向拉伸机,其特征在于:所述拉伸辊与伺服电机之间通过万向传动轴驱动连接。
CN2012201194142U 2012-03-26 2012-03-26 双向拉伸薄膜的纵向拉伸机 Expired - Lifetime CN202592742U (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626986A (zh) * 2012-03-26 2012-08-08 广东仕诚塑料机械有限公司 双向拉伸薄膜的纵向拉伸机

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626986A (zh) * 2012-03-26 2012-08-08 广东仕诚塑料机械有限公司 双向拉伸薄膜的纵向拉伸机

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