CN101491926A - 树脂微小珠粒水下切粒系统 - Google Patents

树脂微小珠粒水下切粒系统 Download PDF

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CN101491926A
CN101491926A CNA2009100256784A CN200910025678A CN101491926A CN 101491926 A CN101491926 A CN 101491926A CN A2009100256784 A CNA2009100256784 A CN A2009100256784A CN 200910025678 A CN200910025678 A CN 200910025678A CN 101491926 A CN101491926 A CN 101491926A
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房宾
马宏
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Nanjing Chengmeng Plastic Mechanical Industry Co Ltd
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    • B29C48/25—Component parts, details or accessories; Auxiliary operations
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2948/00—Indexing scheme relating to extrusion moulding
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C2948/00—Indexing scheme relating to extrusion moulding
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Abstract

本发明公开了一种树脂微小珠粒水下切粒系统，包括水下切粒机构和脱水机构，所述水下切粒机构通过水管路与脱水机构相连，所述水下切粒机构包括水下切粒机和电动机，其特征在于：所述切粒机包括机头、模板、刀架、刀架传动装置和水流管道，所述模板头部截面为圆形，模板头部上镶嵌有10～20个φ15～50mm圆柱型硬质合金圆柱，每个硬质合金圆柱截面具有φ0.2－φ0.5mm的出料孔，出料孔数量为100－200个。本发明由于在模板上设置圆柱型硬质合金圆柱及合金圆柱的出料孔，可以将树脂珠粒大小控制在φ0.2－φ0.5mm，且由于出料孔很多，生产效率提高，可以配置在各类挤出机上使用。

Description

树脂微小珠粒水下切粒系统
技术领域
本发明涉及一种水下切粒系统，尤其是涉及一种树脂微小珠粒水下切粒系统，属于化工机械技术领域。
背景技术
树脂微粒是指粒料颗粒的直径为φ0.2-φ0.5mm，主要用于树脂发泡珠粒，例如EPP珠粒、EPS珠粒、EPE珠粒、聚氨酯珠粒。珠粒经过加压、加热至20～30倍的发泡最终形成发泡塑料泡沫制品。经过20～30倍的发泡后的粒径为φ4～6mm，所以发泡前的粒径只能在φ0.2-φ0.5mm范围的微小珠粒。另外树脂微粒也可用于改性塑料的功能母粒砂、色母粒砂，在塑料配混连续喂料过程中需要添加0.1～0.5‰微量功能料和色母粒时，为了确保连续喂料精度，就必须将颗粒制成0.2～0.5mm范围的微小珠粒。
在树脂微粒生产的过程中，是将聚烯烃树脂熔体切成小颗料制成，但由于聚烯烃树脂熔体挤出粘性很强，一般高压气流喷洒根本不能形成珠粒滴落。申请号为200710049543.2的发明公开了一种用于塑料挤出机拉条造粒的切粒机，包括有金属的机架，安装在机架上的切粒室，其特征在于：轴承箱与切粒室相邻安装在切粒室的一侧，传动轴通过轴承安装在轴承箱内的轴承座中，其一端通过传动部件与电动机连接，另一端延伸入切粒室内安装有动刀，在切粒室内还固定有定刀座，定刀安装在定刀座上与动刀相邻，传动轴通过联动部件与牵引装置的牵引辊联动，驱动牵引辊转动，橡胶压辊和牵引辊之间的通道形成原料的牵引通道，朝向动刀与定刀相邻进行切割工作的位置；在轴承箱内围绕着传动轴承设有环形冷却介质通道，冷却介质的进口和出口设在轴承箱的外壁上。但该切粒机对所切颗粒的大小不能进行很好的控制。
申请号为200720169451.3的实用新型申请公开了一种丁苯树脂热熔体水下造粒系统，应用于丁苯树脂等热熔体在水下成型为颗粒。包括：双螺杆挤出机、换向阀、水下造粒机、造粒水循环装置、离心干燥机、控制装置，其特征是：在双螺杆挤出机与水下造粒机之间有热熔体提压装置，即双螺杆挤出机出料口与水下造粒机进料口之间安装有热熔体提压装置。效果是：由于在双螺杆挤出机下游安装有热熔体提压装置，实现热熔体水下切粒，提高产量不会造成双螺杆挤出机出口压力超载，造粒产量高。颗粒产品在水中充分收缩，颗粒产品外观好。该造粒系统也同样不能对所生产的颗粒大小实现较好控制，特别是不能实现微小珠粒的生产。
发明内容
本发明所要解决的技术问题是提供一种可生产微小珠粒的水下切粒系统。
为解决上述技术问题，本发明提供一种树脂微小珠粒水下切粒系统，包括水下切粒机构和脱水机构，所述水下切粒机构通过水管路与脱水机构相连，电器控制柜分别与水下切粒机构和脱水机构相连，所述水下切粒机构包括水下切粒机和电动机，其特征在于：所述切粒机包括机头、模板、刀架、刀架传动装置和水流管道，所述机头内具有树脂熔体流道，模板固定在机头一侧，所述刀架上固定设置有刀头，刀头上设置有刀片，所述刀头靠紧模板的挤出面上，所述刀架通过刀架传动装置与电动机相连，所述模板的挤出面、刀片及刀架设置于水流管道内，所述水流通道与所述水管路相连通，所述模板头部截面为圆形，模板头部上镶嵌有10～20个φ15～50mm圆柱型硬质合金圆柱，每个硬质合金圆柱截面具有φ0.2-φ0.5mm的出料孔，出料孔数量为100-200个。
本发明所达到的有益效果：
本发明的树脂微小珠粒水下切粒系统由于在模板上设置圆柱型硬质合金圆柱及合金圆柱的出料孔，可以将树脂珠粒大小控制在φ0.2-φ0.5mm，且由于出料孔很多，生产效率提高，可以配置在各类挤出机上使用。
附图说明
图1为本发明的树脂微小珠粒水下切粒系统工艺流程图；
图2为本发明的水下切粒机结构示意图；
图3为本发明的水下切粒机的模板的头部正视图；
图4为本发明的水下切粒机的模板的头部剖视图；
图5为图3中的A处放大图。
具体实施方式
本发明的一种树脂微小珠粒水下切粒系统，包括水下切粒机构和脱水机构，所述水下切粒机构通过水管路与脱水机构相连，电器控制柜分别与水下切粒机构和脱水机构相连，所述水下切粒机构包括水下切粒机1和电动机2，其特征在于：所述切粒机1包括机头11、模板12、刀架13、刀架传动装置14、带轨道支架小车35和水流管道15，所述机头内具有树脂熔体流道，模板12固定在机头11一侧，所述刀架13上固定设置有刀头16，所述刀头靠紧模板12的挤出面上，刀头16上设置有刀片20，所述刀架13通过刀架传动装置与电动机2相连，所述模板的挤出面、刀头16及刀架13设置于水流管道15内，所述水流通道15与所述水管路相连通，所述模板12头部截面为圆形，模板头部上镶嵌有10～20个φ15～50mm圆柱型硬质合金圆柱17，每个硬质合金圆柱截面具有φ0.2-φ0.5mm的出料孔18，出料孔18数量为100-200个。
在本发明中，在模板头部均匀镶嵌10～20个圆柱型硬质合金柱，合金柱上采用高精度加工手段加工出出料孔直径φ0.2-φ0.5mm，每个圆柱出料孔数为100～200个，整个模面出料孔数为1000～4000个，所述出料孔18均匀分布在所述硬质合金柱17圆形截面的多个同心圆圆周上，这样就使挤出压力产生平衡，使挤出切粒均匀稳定。
在所述模板12头部上镶嵌硬质合金圆柱以外的部分为硬质合金材料，以保障刀片旋转接触的硬度相同和切粒稳定。
所述机头处设置有压力传感器和熔体温度传感装置，所述压力传感器和熔体温度传感装置与电器控制柜相连，所述电器控制柜内设置有PLC或PPC自动控制系统和机电控制系统，所述电器控制柜与电动机相连。
机头处安装压力传感器和熔体温度传感装置，二个传感装置联锁电气控制系统，控制切粒机的切刀转速和循环水流量，同时还应用PRT传感技术来控制挤出机的挤出压力和螺杆转速。
在刀架(13)转轴的后半部设置有弹性预压装置(19)。
所述脱水机构包括脱水机3、冷却循环水箱4和水泵5，所述水泵5与冷却循环水箱4相连，并通过水管路与所述水流通道15进口相连，脱水机3通过水管路与所述水流通道15出口相连。所述冷却循环水箱内设置有电加热器和回水冷却器装置，这样可以根据物料工艺设定水温度和控制。
所述水泵5的电机与电器控制柜相连。
所述脱水机3包括脱水振动筛31和多层水过滤网32。
所述脱水机规格为长2000～4000mm×宽度500～800mm。
所述水泵5至所述水流通道15进口的水管路上设置有换向阀33，所述换向阀33一出口通过水管接至脱水机3与所述水流通道15出口的水管路上，所述换向阀33先进行水温、水压调整，在调整过程中将水流不经过切粒熔腔和管道先放出，最后将调整好的水温、水压通过换向阀进入切粒熔腔和管道。
机头流道设计形成熔体流动压力均匀的形状。机头进料口圆柱形长度是直径的1-2.5倍，经过设定的长度，开始扩大变化为圆锥形。圆锥形的度数范围43°～75°，圆锥形长度是小端圆柱形直径的1-2倍。在圆锥形的芯部配置一个长度与圆锥形相同的三角圆锥体，称为分流锥34。其度数范围与圆锥形相同，但设定值一定要大于圆锥形度数5°～15°，分流锥34也可设定为弧形面的，这样就形成了一个不等厚度的锥型环柱体流道，所以带有压力的熔体进入机头体内，通过锥型环柱体流道就实现了分散压力和均匀压力的目的。再经过模板挤出切粒。
本发明的树脂微小珠粒水下切粒系统的工作过程为：挤出机将树脂熔体挤出，进入机头树脂熔体流道，经分压、均压、分流过程后通过模板挤出，被刀刀头上的刀片切下，由于刀架具有弹性预压装置施加的弹性预压力，所以刀韧口贴覆在模板挤出面上，模板的挤出面和刀片及刀架都处在流动的水中，被刀片切下的熔体树脂会立即冷却形成珠粒被水带走，经过脱水机构脱水后的珠粒送入下道干燥系统。

Claims (10)

1.一种树脂微小珠粒水下切粒系统，包括水下切粒机构和脱水机构，所述水下切粒机构通过水管路与脱水机构相连，电器控制柜分别与水下切粒机构和脱水机构相连，所述水下切粒机构包括水下切粒机(1)和电动机(2)，其特征在于：所述切粒机(1)包括机头(11)、模板(12)、刀架(13)、刀架传动装置(14)和水流管道(15)，所述机头内具有树脂熔体流道，模板(12)固定在机头(11)一侧，所述刀架(13)上固定设置有刀头(16)，刀头(16)上设置有刀片(20)，所述刀头(16)靠紧模板(12)的挤出面上，所述刀架(13)通过刀架传动装置与电动机(2)相连，所述模板的挤出面、刀头(16)及刀架(13)设置于水流管道(15)内，所述水流通道(15)与所述水管路相连通，所述模板(12)头部截面为圆形，模板头部上镶嵌有10～20个φ15～50mm圆柱型硬质合金圆柱(17)，每个硬质合金圆柱截面具有φ0.2-φ0.5mm的出料孔(18)，出料孔(18)数量为100-200个。
2.根据权利要求1所述的树脂微小珠粒水下切粒系统，其特征在于：所述出料孔(18)均匀分布在所述硬质合金柱(17)圆形截面的多个同心圆圆周上。
3.根据权利要求1所述的树脂微小珠粒水下切粒系统，其特征在于：在所述模板(12)头部上镶嵌硬质合金圆柱以外的部分为硬质合金材料。
4.根据权利要求1或2或是3所述的树脂微小珠粒水下切粒系统，其特征在于：所述机头处设置有压力传感器和熔体温度传感装置，所述压力传感器和熔体温度传感装置与电器控制柜相连，所述电器控制柜内设置有PLC或PPC自动控制系统和机电控制系统，所述电器控制柜与电动机相连。
5.根据权利要求1所述的树脂微小珠粒水下切粒系统，其特征在于：在刀架(13)转轴的后半部设置有弹性预压装置(19)。
6.根据权利要求1所述的树脂微小珠粒水下切粒系统，其特征在于：所述脱水机构包括脱水机(3)、冷却循环水箱(4)和水泵(5)，所述水泵(5)与冷却循环水箱(4)相连，并通过水管路与所述水流通道(15)进口相连，脱水机(3)通过水管路与所述水流通道(15)出口相连。
7.根据权利要求6述的树脂微小珠粒水下切粒系统，其特征在于：所述冷却循环水箱(4)内设置有电加热器和回水冷却器装置。
8.根据权利要求6所述的树脂微小珠粒水下切粒系统，其特征在于：所水泵(5)的电机与电器控制柜相连。
9.根据权利要求6所述的树脂微小珠粒水下切粒系统，其特征在于：所述脱水机(3)包括脱水振动筛(31)和多层水过滤网(32)。
10.根据权利要求6所述的树脂微小珠粒水下切粒系统，其特征在于：所述水泵(5)至所述水流通道(15)进口的水管路上设置有换向阀(33)，所述换向阀(33)一出口通过水管接至脱水机(3)与所述水流通道(15)出口的水管路上。
CNA2009100256784A 2009-03-05 2009-03-05 树脂微小珠粒水下切粒系统 Pending CN101491926A (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
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CN102632564A (zh) * 2011-02-11 2012-08-15 克朗斯股份公司 制备聚合物颗粒的设备和方法
CN102649297A (zh) * 2012-05-14 2012-08-29 高鼎精细化工(昆山)有限公司 Tpu复合改性生产装置
CN102837377A (zh) * 2012-08-07 2012-12-26 合肥会通中科材料有限公司 一种用于聚合物挤出发泡的水下造粒装置
CN113103458A (zh) * 2021-04-19 2021-07-13 何先进 一种色母粒颗粒生产设备及其生产工艺

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102632564A (zh) * 2011-02-11 2012-08-15 克朗斯股份公司 制备聚合物颗粒的设备和方法
CN102632564B (zh) * 2011-02-11 2015-03-11 克朗斯股份公司 制备聚合物颗粒的设备和方法
CN102649297A (zh) * 2012-05-14 2012-08-29 高鼎精细化工(昆山)有限公司 Tpu复合改性生产装置
CN102837377A (zh) * 2012-08-07 2012-12-26 合肥会通中科材料有限公司 一种用于聚合物挤出发泡的水下造粒装置
CN113103458A (zh) * 2021-04-19 2021-07-13 何先进 一种色母粒颗粒生产设备及其生产工艺

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