CN113370416A - 一种eva复合鞋底的制备工艺 - Google Patents
一种eva复合鞋底的制备工艺 Download PDFInfo
- Publication number
- CN113370416A CN113370416A CN202110812660.XA CN202110812660A CN113370416A CN 113370416 A CN113370416 A CN 113370416A CN 202110812660 A CN202110812660 A CN 202110812660A CN 113370416 A CN113370416 A CN 113370416A
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- Prior art keywords
- eva
- parts
- plate
- wear
- shoe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
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Abstract
本发明公开了一种EVA复合鞋底的制备工艺,通过将EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片、EVA耐磨止滑层鞋片的相邻鞋片表层进行加热融化,然后通过压合模具将使得相邻鞋片粘合在一起,最终成型为上、中、下三层分别为EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片和EVA耐磨止滑层鞋片的EVA复合鞋底。由于采用相同的EVA基材粘合,当受到阳光、温度等不断影响时,粘接处不容易产生质变导致鞋子易损坏,整体的结构强度高,使用寿命好。本发明所生产的EVA复合鞋底具有抗菌耐磨、弹性耐折和耐磨止滑的复合性能,在夏季相对温暖潮湿的环境下,运动时穿鞋者出脚汗时,表层的EVA抗菌耐磨层也不容易滋生病菌。
Description
技术领域
本发明涉及EVA鞋材技术领域,尤其涉及一种EVA复合鞋底的制备工艺。
背景技术
EVA是乙烯和醋酸共聚而成的,中文化学名称为乙烯~醋酸乙烯共聚物(乙烯~乙酸乙烯共聚物)。一般醋酸乙烯(VA)的含量在5~40%,与聚乙烯(PE)相比,EVA由于在分子链中引入醋酸乙烯单体,从而降低了高结晶度,提高了韧性、抗冲击性、填料相溶性和热密封性能。EVA的应用领域相当广泛,我国每年的市场消费量都在不断地增加,尤其在制鞋工业,被应用于中高档旅游鞋、登山鞋、拖鞋、凉鞋的鞋底和内饰材料中。在夏季相对温暖潮湿的环境下,运动时穿鞋者会出很多脚汗,时间长了之后运动鞋的内部会积累汗渍而发臭,EVA拖鞋很容易滋生病菌,只能通过清洗或暴晒来除臭,非常麻烦,而且耐磨性、防滑性和轻量性等其他性能存在不足之处。
发明内容
本发明要解决上述现有技术存在的问题,提供一种EVA复合鞋底的制备工艺,具有较强的抗菌、轻量和耐磨止滑等性能。
本发明解决其技术问题采用的技术方案:一种EVA复合鞋底的制备工艺,包括以下步骤,
步骤100,制备EVA抗菌耐磨层鞋片;
步骤200,制备EVA弹性耐折层鞋片;
步骤300,制备EVA耐磨止滑层鞋片;
步骤400、将EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片、EVA耐磨止滑层鞋片的相邻鞋片表层进行加热融化,然后通过压合模具将使得相邻鞋片粘合在一起,最终成型为上、中、下三层分别为EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片和EVA耐磨止滑层鞋片的EVA复合鞋底;
所述压合模具包括两个初始位置为水平的左模板和右模板,左模板和右模板上分别设有左模腔和右模腔,左模腔和右模腔的正上方各设有一个可升降的加热板,加热板上设有第一升降机构,第一升降机构用于驱动加热板升降,使其对放置在模腔内的鞋片表层进行加热融化,所述左模腔和右模腔的底部各设有一个可升降的真空吸附压合板,真空吸附压合板的底部设有第二升降机构,所述左模板和右模板之间设有翻转驱动机构,翻转驱动机构用于驱动两个左模板和右模板的开合,实现左模腔和右模腔的开合模。
进一步完善,所述真空吸附压合板包括吸附板和基板,基板固定在吸附板的下方,吸附板上设有若干吸附孔,所述基板上设有凹腔,凹腔内设有固定板,固定板上侧固定有若干个活塞杆,活塞杆的上端与吸附孔密封滑动连接,固定板下方设有推板,固定板与推板连接有若干个弹簧,所述推板与基板之间设有电磁铁伸缩杆。
进一步完善,步骤100中的EVA抗菌耐磨层鞋片的制备过程如下,
步骤101,配料:向料筒中加入以下重量份的组份:EVA颗粒100~150份,对苯乙烯磺酸钠11~15份、乙二胺四乙酸四钠6~8份、亚甲基二萘磺酸钠4~8份、羧甲基脱乙酰壳多糖2~7份,0.03~0.5份氧化锌微粉,0.005~0.01份的白银粉末,完成配料;
步骤102,预混1,用混合装置将苯乙烯磺酸钠、乙二胺四乙酸四钠、亚甲基二萘磺酸钠和羧甲基脱乙酰壳多糖混合,加入混合物5倍质量的水,混合均匀,置于80~100℃温度下混合反应30~40min;
步骤103,预混2,用混合装置将EVA颗粒、氧化锌微粉和白银粉末混合均匀,置于75~80℃下加热为液态材料,搅拌15~20分钟,确保氧化锌微粉和白银粉末跟液态EVA材料的充分混合;
步骤104,密炼,将步骤102与步骤103所得物混合,置于密炼机中混炼10~13min,混炼温度80~100℃;
步骤105,冷却成型,密炼完成后,然后将液体倒入模具成型为EVA抗菌耐磨层鞋片。
进一步完善,步骤200中EVA弹性耐折层鞋片的制备方法如下,
步骤201、按重量计,选取EVA颗粒45~50份,PP弹性体10~16份,聚烯烃嵌段共聚物15~20份,乙烯~丁烯共聚物10~16份,AC发泡剂3~3.5份,滑石粉3~5份,硬脂酸0.6~0.8份,硬脂酸锌1~1.5份,氧化锌0.7~0.9份,交联剂BIBP 0.8~1.2份,纳米碳酸钙2~3份;
步骤202、按上述配方用混合装置将其混合,然后进行密炼,调整密炼温度为100~110℃,保持5~10min,然后翻料2次,继续密炼升温,出料温度为110~120℃,密炼结束后进行开炼、造粒,通过模具成型得到EVA弹性耐折层鞋片,EVA弹性耐折层鞋片的内部设有高强度合成纤维网骨。
进一步完善,步骤300中EVA耐磨止滑层鞋片的制备方法如下,
步骤301、按重量计,选取EVA颗粒65份;低聚物多元醇3份;二异氰酸酯8份;海泡石5份;发泡剂2份;交联剂2份;氧化锌2份;硬脂酸锌1份;纳米碳酸钙1份;准备好各原料;
步骤301、将EVA颗粒、低聚物多元醇、二异氰酸酯、海泡石、氧化锌、硬脂酸锌和纳米碳酸钙用混合装置将混合均匀,在90~100℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为105~110℃,密炼结束后进行开炼、造粒,最后通过模具成型得到EVA耐磨止滑层鞋片。
进一步完善,所述混合装置包括工作台,所述工作台上端面固定连接有支撑架,支撑架上转动安装有转轴,转轴上固定连接有反应釜,反应釜侧壁上内置有加热层,反应釜上方设有釜盖,反应釜的底部为半球形釜底,转轴的轴线经过半球形釜底的球心,半球形釜底的底部固定有半圆形齿条,所述工作台上设有第一电机,所述第一电机的输出端连接有蜗轮蜗杆减速器,蜗轮蜗杆减速器的输出端设有驱动齿轮,驱动齿轮与半圆形齿条啮合连接,所述工作台远离所述支撑架一端固定连接有支撑板,所述支撑板下端面固定连接有第三升降机构,第三升降机构的下端固定连接有所述釜盖,釜盖上侧中心固定有第二电机,釜盖下侧设有行星齿轮搅拌机构,行星齿轮搅拌机构包括中心搅拌轴、转盘、中心齿轮、外齿圈、保持架、行星搅拌轴和行星齿轮,所述中心搅拌轴上端穿过转盘并固定连接第二电机的输出端,所述中心搅拌轴上固定有所述中心齿轮,所述行星搅拌轴与行星齿轮固定连接,所述行星齿轮啮合于外齿圈和中心齿轮之间,所述转盘上侧与釜盖转动连接,转盘下端与行星搅拌轴上端转动连接,所述行星搅拌轴和中心搅拌轴上均设有搅拌杆,所述保持架转动安装在中心搅拌轴和行星齿轮的下侧,保持架的下端固定有十字型弯曲搅拌架,所述中心搅拌轴的下端与十字型弯曲搅拌架的中心转动连接。
本发明有益的效果是:本发明的EVA复合鞋底由上、中、下三层的EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片和EVA耐磨止滑层鞋片,经过压合模具热熔粘结组合流程而成,由于采用相同的EVA基材粘合,当受到阳光、温度等不断影响时,粘接处不容易产生质变导致鞋子易损坏,整体的结构强度高,使用寿命好。本发明所生产的EVA复合鞋底具有抗菌耐磨、弹性耐折和耐磨止滑的复合性能,在夏季相对温暖潮湿的环境下,运动时穿鞋者出脚汗时,表层的EVA抗菌耐磨层也不容易滋生病菌,而且EVA抗菌耐磨层不容易被脚底磨损破坏,提高了鞋底上层的使用寿命,鞋底中间的EVA弹性耐折层具有优秀的弹性柔软的性能,而且密度低,可以降低鞋体的整体密度,提高鞋体的轻量化水平,下层的EVA耐磨止滑层可以使鞋底具备优异的耐磨止滑的性能。
附图说明
图1为压合模具的结构示意图;
图2为真空吸附压合板的结构示意图;
图3为混合装置的结构示意图;
附图标记说明:1、压合模具,11、左模板,12、右模板,13、加热板,14、第一升降机构,15、第二升降机构,16、翻转驱动机构,2、真空吸附压合板,21、吸附板,22、基板,23、吸附孔,24、固定板,25、活塞杆,26、推板,27、弹簧,28、电磁铁伸缩杆,3、混合装置,31、工作台,32、支撑架,33、转轴,34、第一电机,35、蜗轮蜗杆减速器,36、驱动齿轮,37、支撑板,38、第三升降机构,4、反应釜,41、加热层,42、釜盖,43、半球形釜底,44、半圆形齿条,45、第二电机,5、行星齿轮搅拌机构,51、中心搅拌轴,52、转盘,53、中心齿轮,54、外齿圈,55、保持架,56、行星搅拌轴,57、行星齿轮,58、搅拌杆,59、十字型弯曲搅拌架。
具体实施方式
下面结合附图对本发明作进一步说明:
参照附图:本实施例中一种EVA复合鞋底的制备工艺,其特征在于:包括以下步骤,
步骤100,制备EVA抗菌耐磨层鞋片;
步骤200,制备EVA弹性耐折层鞋片;
步骤300,制备EVA耐磨止滑层鞋片;
步骤400、将EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片、EVA耐磨止滑层鞋片的相邻鞋片表层进行加热融化,然后通过压合模具1将使得相邻鞋片粘合在一起,最终成型为上、中、下三层分别为EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片和EVA耐磨止滑层鞋片的EVA复合鞋底;EVA复合鞋底经过压合模具热熔粘结组合流程而成,由于采用相同的EVA基材粘合,当受到阳光、温度等不断影响时,粘接处不容易产生质变导致鞋子易损坏,整体的结构强度高,使用寿命好。本工艺所生产的EVA复合鞋底具有抗菌耐磨、弹性耐折和耐磨止滑的复合性能,在夏季相对温暖潮湿的环境下,运动时穿鞋者出脚汗时,表层的EVA抗菌耐磨层也不容易滋生病菌,而且EVA抗菌耐磨层不容易被脚底磨损破坏,提高了鞋底上层的使用寿命,鞋底中间的EVA弹性耐折层具有优秀的弹性柔软的性能,而且密度低,可以降低鞋体的整体密度,提高鞋体的轻量化水平,下层的EVA耐磨止滑层可以使鞋底具备优异的耐磨止滑的性能。
所述压合模具1包括两个初始位置为水平的左模板11和右模板12,左模板11和右模板12上分别设有左模腔和右模腔,左模腔和右模腔的正上方各设有一个可升降的加热板13,加热板13上设有第一升降机构14,第一升降机构14用于驱动加热板13升降,使其对放置在模腔内的鞋片表层进行加热融化,所述左模腔和右模腔的底部各设有一个可升降的真空吸附压合板2,真空吸附压合板2的底部设有第二升降机构15,所述左模板11和右模板12之间设有翻转驱动机构16,翻转驱动机构16用于驱动两个左模板11和右模板12的开合,实现左模腔和右模腔的开合模。
EVA复合鞋底在压合模具1上制造原理:将EVA抗菌耐磨层鞋片和EVA弹性耐折层鞋片分别放置在左模板11和右模板12的模腔中进行定位,然后第一升降机构14启动将加热板13降下,加热板13通过高温对放置在模腔内的鞋片表层进行加热融化后第一升降机构14启动将快速加热板13升起,同时真空吸附压合板2吸附住模腔内的鞋片,防止加热板13将鞋片带起,接着翻转驱动机构16启动,通过伸缩杆驱动两个左模板11和右模板12翻转进行合拢,使左右两边的EVA抗菌耐磨层鞋片和EVA弹性耐折层鞋片贴合接触,然后真空吸附压合板2底部的第二升降机构15启动,对真空吸附压合板2施压,保持一定压力,使EVA抗菌耐磨层鞋片和EVA弹性耐折层鞋片在压力作用下可以更好的粘合在一起,待EVA抗菌耐磨层鞋片和EVA弹性耐折层鞋片之间的粘合处冷却凝固后,两边的第二升降机构15对真空吸附压合板2泄压,同时有左边的的真空吸附压合板2停止吸附,然后翻转驱动机构16启动将左模板11和右模板12打开,这样EVA抗菌耐磨层鞋片和EVA弹性耐折层鞋片的复合体便附在右边的真空吸附压合板2上,最后右边的第二升降机构15启动真空吸附压合板2顶起,将复合体顶出模腔,同时真空吸附压合板2停止真空吸附,工作人员即可将复合体鞋片进行取下,同理,将其和EVA弹性耐折层鞋片放置到另一副压合模具1上进行粘合,这样就得到了上、中、下三层分别为EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片和EVA耐磨止滑层鞋片的EVA复合鞋底。
所述真空吸附压合板2包括吸附板21和基板22,基板22固定在吸附板21的下方,吸附板21上设有若干吸附孔23,所述基板22上设有凹腔,凹腔内设有固定板24,固定板24上侧固定有若干个活塞杆25,活塞杆25的上端与吸附孔23密封滑动连接,固定板24下方设有推板26,固定板24与推板26连接有若干个弹簧27,所述推板26与基板22之间设有电磁铁伸缩杆28。电磁铁伸缩杆28通电时会吸合,带动推板26下移,推板26通过弹簧27驱动固定板24下移,固定板24带动吸附孔23内端活塞杆25下移,由于活塞杆25的上端的活塞与吸附孔23密封滑动连接,吸附孔23上部形成负压环境,对鞋进行真空吸附,弹簧27可以防止吸附力过大造成鞋片表面的损伤;所述电磁铁伸缩杆28断电时会弹起,带动推板26上移,驱动固定板24和活塞杆25上移,停止对鞋片进行吸附。
步骤100中的EVA抗菌耐磨层鞋片的制备过程如下,
步骤101,配料:向料筒中加入以下重量份的组份:EVA颗粒100~150份,对苯乙烯磺酸钠11~15份、乙二胺四乙酸四钠6~8份、亚甲基二萘磺酸钠4~8份、羧甲基脱乙酰壳多糖2~7份,0.03~0.5份氧化锌微粉,0.005~0.01份的白银粉末,完成配料;对苯乙烯磺酸钠是一种用途很广的表面活性剂,其共聚物可用作塑料、橡胶等的抗静电剂。乙二胺四乙酸四钠是一种重要的络合剂及金属掩蔽剂,用做活化剂。亚甲基二萘磺酸钠用作填料和助剂的分散剂,有良好的扩散力,能与其他阴离子型、非离子型表面活性剂混用。羧甲基脱乙酰壳多糖的主要作用是成膜剂和黏度控制。微粉化的氧化锌是已被处理以下降其颗粒的均匀尺度,发生超细粉末的氧化锌。微粉化的术语能够指颗粒是微小尺度的,这意味着它们是直径为几微米(1微米是百万分之一米),但也可指更小的纳米粒子,这意味着是1~100纳米的颗粒直径(1纳米是一米的十亿分之一)。两个微粉化的氧化锌和常规的氧化锌可以避免有害的太阳光中的UVA和UVB射线,提高鞋垫的寿命。纳米氧化锌是无机抗菌材料。具有杀菌作用。白银粉末的颗粒直径为1~500纳米,白银杀菌能力很强,故被誉为“永久性的杀菌剂”,据科学研究,伤寒杆菌在银片上也只能存活1小时,白喉杆菌在银片上也只能存活3个小时。白银粉末在水中可形成带正电荷的银离子,这些银离子能将细菌吸附其上,令细菌赖以呼吸的酶失去作用,使细菌无法生存,达到具有抗菌除臭的效果,可以有效防止鞋面因为积汗而发臭。
步骤102,预混1,用混合装置3将苯乙烯磺酸钠、乙二胺四乙酸四钠、亚甲基二萘磺酸钠和羧甲基脱乙酰壳多糖混合,加入混合物5倍质量的水,混合均匀,置于80~100℃温度下混合反应30~40min;
步骤103,预混2,用混合装置3将EVA颗粒、氧化锌微粉和白银粉末混合均匀,置于75~80℃下加热为液态材料,搅拌15~20分钟,确保氧化锌微粉和白银粉末跟液态EVA材料的充分混合;
步骤104,密炼,将步骤102与步骤103所得物混合,置于密炼机中混炼10~13min,混炼温度80~100℃;
步骤105,冷却成型,密炼完成后,然后将液体倒入模具成型为EVA抗菌耐磨层鞋片。EVA抗菌耐磨层鞋片相对于普通EVA材料,添加了白银和氧化锌微粉作为抗菌的混合EVA材料,因为银离子的抑菌作用,在制备成拖鞋、鞋垫、鞋底或其他日用品后,会具备一定的抑菌效果,防治病菌的孳生,能够有效减少因为病菌滋生引发的不适及各类疾病。氧化锌微粉具有很好的光催化作用,吸收紫外线后可有效分解鞋内的汗渍、细菌,与银离子产生协同作用,从而大大提高鞋底材料的抗菌除臭性能。对苯乙烯磺酸钠、乙二胺四乙酸四钠、亚甲基二萘磺酸钠和羧甲基脱乙酰壳多糖等材料可以大幅度提高了EVA材料耐磨性能、耐油性能和阻燃性能,使得穿着环境范围更加广泛,提高鞋底表面的耐磨、耐油性能,不容易污损,延长了鞋底的寿命,制成拖鞋时可以有更佳的舒适性能和易清洗性能。
步骤200中EVA弹性耐折层鞋片的制备方法如下,
步骤201、按重量计,选取EVA颗粒45~50份,PP弹性体10~16份,聚烯烃嵌段共聚物15~20份,乙烯~丁烯共聚物10~16份,AC发泡剂3~3.5份,滑石粉3~5份,硬脂酸0.6~0.8份,硬脂酸锌1~1.5份,氧化锌0.7~0.9份,交联剂BIBP 0.8~1.2份,纳米碳酸钙2~3份;PP弹性体的加入,使得该EVA在发泡后具有更好的弹性。PP弹性体中加入一定量的无机矿物,如滑石粉、纳米碳酸钙和云母等,可提高刚性,改善耐热性与光泽性;填加碳纤维、硼纤维、玻璃纤维等高强度合成纤维网骨可提高抗张强度。聚烯烃嵌段共聚物是采用茂金属催化剂链转移技术合成的结构可控的聚烯烃弹性体25,分子由软嵌段和硬嵌段交替排列而成,软嵌段提供了分子的柔顺性,硬嵌段提供了分子耐热性,有良好的柔顺性和耐热性的平衡。配合乙烯~丁烯共聚物,加入越多的共聚单体会降低聚合物的密度和结晶度,但是增加了它的柔顺性。无规共聚物按照不同的排列方式,对产物有不同的影响,假如两个较软的共聚单体互相连接可能不牢固,在它们之间嵌入一硬嵌段,可以增加它们的粘度和耐热性;如果两个较硬的共聚单体互相连接可能韧性不够,在它们之间嵌入-软嵌段,可以增加它们的柔韧性。这样使原材料中软嵌段和硬嵌段相互嵌入彼此之间,交替排列,可以使共聚物的性能得到提高。钠米碳酸钙可以增强橡胶的硫化胶升长率、撕断性能、压缩变形和耐屈性能,都比添加一般碳酸钙的高,加入用树脂酸处理的纳米碳酸钙后,橡胶制品撕裂强度可以提高2~4倍以上。
步骤202、按上述配方用混合装置3将其混合,然后进行密炼,调整密炼温度为100~110℃,保持5~10min,然后翻料2次,继续密炼升温,出料温度为110~120℃,密炼结束后进行开炼、造粒,通过模具成型得到EVA弹性耐折层鞋片,EVA弹性耐折层鞋片的内部设有高强度合成纤维网骨。上述工艺所制得的EVA弹性耐折层鞋片具有柔软、高弹性和高耐磨等特性,使得鞋底具有优秀的弹性和缓冲性能,还可降低生产成本,减轻EVA鞋底自重。高强度合成纤维网骨可以提高鞋片的韧性,使鞋底更加耐折,不容易断裂。
步骤300中EVA耐磨止滑层鞋片的制备方法如下,
步骤301、按重量计,选取EVA颗粒65份;低聚物多元醇3份;二异氰酸酯8份;海泡石5份;发泡剂2份;交联剂2份;氧化锌2份;硬脂酸锌1份;纳米碳酸钙1份;准备好各原料;低聚物多元醇是合成聚氨酯弹性体,鞋底原液,聚氨酯浆料等的主要原料,选用聚酯多元醇、聚醚多元醇和聚合物多元醇中的一种,聚酯多元醇简称聚酯,是聚氨酯弹性体最重要的原料中间体之一。聚氨酯材料由二异氰酸酯与聚醚多元醇或聚酯多元醇经聚合而制得。聚氨酯弹性体可以增效鞋底的耐磨性能,配合EVA材料复合形成优良的耐磨止滑性能。钠米碳酸钙可以增强橡胶的硫化胶升长率、撕断性能、压缩变形和耐屈性能,都比添加一般碳酸钙的高,加入用树脂酸处理的纳米碳酸钙后,橡胶制品撕裂强度可以提高2~4倍以上,海泡石在浅色的EVA制品中用作补强剂,可以进一步提高用作鞋底下层鞋片的强度。
步骤301、将EVA颗粒、低聚物多元醇、二异氰酸酯、海泡石、氧化锌、硬脂酸锌和纳米碳酸钙用混合装置3将混合均匀,在90~100℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为105~110℃,密炼结束后进行开炼、造粒,最后通过模具成型得到EVA耐磨止滑层鞋片。上述工艺所制得的EVA耐磨止滑层鞋片具备优异的耐磨性能,且强度、防滑性、柔韧性等其他性能也达到了优良水平,使得复合鞋底的底面具有更换的耐磨止滑的性能,配合中层的EVA弹性耐折层鞋片可以提高鞋底的整体强度。
所述混合装置3包括工作台31,所述工作台31上端面固定连接有支撑架32,支撑架32上转动安装有转轴33,转轴33上固定连接有反应釜4,反应釜4侧壁上内置有加热层41,反应釜4上方设有釜盖42,反应釜4的底部为半球形釜底43,转轴33的轴线经过半球形釜底43的球心,半球形釜底43的底部固定有半圆形齿条44,所述工作台31上设有第一电机34,所述第一电机34的输出端连接有蜗轮蜗杆减速器35,蜗轮蜗杆减速器35的输出端设有驱动齿轮36,驱动齿轮36与半圆形齿条44啮合连接,所述工作台31远离所述支撑架32一端固定连接有支撑板37,所述支撑板37下端面固定连接有第三升降机构38,第三升降机构38的下端固定连接有所述釜盖42,釜盖42上侧中心固定有第二电机45,釜盖42下侧设有行星齿轮搅拌机构5,行星齿轮搅拌机构5包括中心搅拌轴51、转盘52、中心齿轮53、外齿圈54、保持架55、行星搅拌轴56和行星齿轮57,所述中心搅拌轴51上端穿过转盘52并固定连接第二电机45的输出端,所述中心搅拌轴51上固定有所述中心齿轮53,所述行星搅拌轴56与行星齿轮57固定连接,所述行星齿轮57啮合于外齿圈54和中心齿轮53之间,所述转盘52上侧与釜盖42转动连接,转盘52下端与行星搅拌轴56上端转动连接,所述行星搅拌轴56和中心搅拌轴51上均设有搅拌杆58,所述保持架55转动安装在中心搅拌轴51和行星齿轮57的下侧,保持架55的下端固定有十字型弯曲搅拌架59,所述中心搅拌轴51的下端与十字型弯曲搅拌架59的中心转动连接。
混合装置3的工作原理:使用时,首先按照上述鞋片配方,向反应釜4中加入EVA颗粒和其他组分,完成配料,然后盖上釜盖42,启动第二电机45驱动中心搅拌轴51,带动行星齿轮搅拌机构5进行搅拌,中心搅拌轴51自转时,中心齿轮53啮合行星齿轮57,行星齿轮57啮合外齿圈54,带动保持架55自转以及行星搅拌轴56自转和公转,十字型弯曲搅拌架59转动对外围靠近釜壁的材料进行搅拌,搅拌杆58对内围釜中心的材料进行相互交错转动搅拌,使反应釜4内完成配比的材料进行充分搅拌,使得EVA颗粒和其他充分接触,完成初步混合,反应釜4侧壁上的加热层41对反应釜4内的材料进行加热,保证反应釜4内的温度控制在一定的范围内,加热过程中,对反应釜4内的材料持续进行搅拌,待反应釜4内的EVA材料全部熔解后,液态EVA材料和其他组分的充分混合和反应,搅拌完成后,启动第三升降机构38,釜盖42向上打开,然后第一电机34启动,通过蜗轮蜗杆减速器35、驱动齿轮36和半圆形齿条44等机构带动反应釜4转动,使得反应釜4内的液态混合材料可以倒入其他容器中,进行下一步的工艺流程。
虽然本发明已通过参考优选的实施例进行了图示和描述,但是,本专业普通技术人员应当了解,在权利要求书的范围内,可作形式和细节上的各种各样变化。
Claims (6)
1.一种EVA复合鞋底的制备工艺,其特征在于:包括以下步骤,
步骤100,制备EVA抗菌耐磨层鞋片;
步骤200,制备EVA弹性耐折层鞋片;
步骤300,制备EVA耐磨止滑层鞋片;
步骤400、将EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片、EVA耐磨止滑层鞋片的相邻鞋片表层进行加热融化,然后通过压合模具(1)将使得相邻鞋片粘合在一起,最终成型为上、中、下三层分别为EVA抗菌耐磨层鞋片、EVA弹性耐折层鞋片和EVA耐磨止滑层鞋片的EVA复合鞋底;
所述压合模具(1)包括两个初始位置为水平的左模板(11)和右模板(12),左模板(11)和右模板(12)上分别设有左模腔和右模腔,左模腔和右模腔的正上方各设有一个可升降的加热板(13),加热板(13)上设有第一升降机构(14),第一升降机构(14)用于驱动加热板(13)升降,使其对放置在模腔内的鞋片表层进行加热融化,所述左模腔和右模腔的底部各设有一个可升降的真空吸附压合板(2),真空吸附压合板(2)的底部设有第二升降机构(15),所述左模板(11)和右模板(12)之间设有翻转驱动机构(16),翻转驱动机构(16)用于驱动两个左模板(11)和右模板(12)的开合,实现左模腔和右模腔的开合模。
2.根据权利要求1所述的一种EVA复合鞋底的制备工艺,其特征在于:所述真空吸附压合板(2)包括吸附板(21)和基板(22),基板(22)固定在吸附板(21)的下方,吸附板(21)上设有若干吸附孔(23),所述基板(22)上设有凹腔,凹腔内设有固定板(24),固定板(24)上侧固定有若干个活塞杆(25),活塞杆(25)的上端与吸附孔(23)密封滑动连接,固定板(24)下方设有推板(26),固定板(24)与推板(26)连接有若干个弹簧(27),所述推板(26)与基板(22)之间设有电磁铁伸缩杆(28)。
3.根据权利要求1或2所述的一种EVA复合鞋底的制备工艺,其特征在于:步骤100中的EVA抗菌耐磨层鞋片的制备过程如下,
步骤101,配料:向料筒中加入以下重量份的组份:EVA颗粒100~150份,对苯乙烯磺酸钠11~15份、乙二胺四乙酸四钠6~8份、亚甲基二萘磺酸钠4~8份、羧甲基脱乙酰壳多糖2~7份,0.03~0.5份氧化锌微粉,0.005~0.01份的白银粉末,完成配料;
步骤102,预混1,用混合装置(3)将苯乙烯磺酸钠、乙二胺四乙酸四钠、亚甲基二萘磺酸钠和羧甲基脱乙酰壳多糖混合,加入混合物5倍质量的水,混合均匀,置于80~100℃温度下混合反应30~40min;
步骤103,预混2,用混合装置(3)将EVA颗粒、氧化锌微粉和白银粉末混合均匀,置于75~80℃下加热为液态材料,搅拌15~20分钟,确保氧化锌微粉和白银粉末跟液态EVA材料的充分混合;
步骤104,密炼,将步骤102与步骤103所得物混合,置于密炼机中混炼10~13min,混炼温度80~100℃;
步骤105,冷却成型,密炼完成后,然后将液体倒入模具成型为EVA抗菌耐磨层鞋片。
4.根据权利要求3所述的一种EVA复合鞋底的制备工艺,其特征在于:步骤200中EVA弹性耐折层鞋片的制备方法如下,
步骤201、按重量计,选取EVA颗粒45~50份,PP弹性体10~16份,聚烯烃嵌段共聚物15~20份,乙烯~丁烯共聚物10~16份,AC发泡剂3~3.5份,滑石粉3~5份,硬脂酸0.6~0.8份,硬脂酸锌1~1.5份,氧化锌0.7~0.9份,交联剂BIBP 0.8~1.2份,纳米碳酸钙2~3份;
步骤202、按上述配方用混合装置(3)将其混合,然后进行密炼,调整密炼温度为100~110℃,保持5~10min,然后翻料2次,继续密炼升温,出料温度为110~120℃,密炼结束后进行开炼、造粒,通过模具成型得到EVA弹性耐折层鞋片,EVA弹性耐折层鞋片的内部设有高强度合成纤维网骨。
5.根据权利要求4所述的一种EVA复合鞋底的制备工艺,其特征在于:步骤300中EVA耐磨止滑层鞋片的制备方法如下,
步骤301、按重量计,选取EVA颗粒65份;低聚物多元醇3份;二异氰酸酯8份;海泡石5份;发泡剂2份;交联剂2份;氧化锌2份;硬脂酸锌1份;纳米碳酸钙1份;准备好各原料;
步骤301、将EVA颗粒、低聚物多元醇、二异氰酸酯、海泡石、氧化锌、硬脂酸锌和纳米碳酸钙用混合装置(3)将混合均匀,在90~100℃的温度环境中进行密炼,再加入发泡剂、交联剂,混合均匀后进行升温密炼,出料温度为105~110℃,密炼结束后进行开炼、造粒,最后通过模具成型得到EVA耐磨止滑层鞋片。
6.根据权利要求5所述的一种EVA复合鞋底的制备工艺,其特征在于:所述混合装置(3)包括工作台(31),所述工作台(31)上端面固定连接有支撑架(32),支撑架(32)上转动安装有转轴(33),转轴(33)上固定连接有反应釜(4),反应釜(4)侧壁上内置有加热层(41),反应釜(4)上方设有釜盖(42),反应釜(4)的底部为半球形釜底(43),转轴(33)的轴线经过半球形釜底(43)的球心,半球形釜底(43)的底部固定有半圆形齿条(44),所述工作台(31)上设有第一电机(34),所述第一电机(34)的输出端连接有蜗轮蜗杆减速器(35),蜗轮蜗杆减速器(35)的输出端设有驱动齿轮(36),驱动齿轮(36)与半圆形齿条(44)啮合连接,所述工作台(31)远离所述支撑架(32)一端固定连接有支撑板(37),所述支撑板(37)下端面固定连接有第三升降机构(38),第三升降机构(38)的下端固定连接有所述釜盖(42),釜盖(42)上侧中心固定有第二电机(45),釜盖(42)下侧设有行星齿轮搅拌机构(5),行星齿轮搅拌机构(5)包括中心搅拌轴(51)、转盘(52)、中心齿轮(53)、外齿圈(54)、保持架(55)、行星搅拌轴(56)和行星齿轮(57),所述中心搅拌轴(51)上端穿过转盘(52)并固定连接第二电机(45)的输出端,所述中心搅拌轴(51)上固定有所述中心齿轮(53),所述行星搅拌轴(56)与行星齿轮(57)固定连接,所述行星齿轮(57)啮合于外齿圈(54)和中心齿轮(53)之间,所述转盘(52)上侧与釜盖(42)转动连接,转盘(52)下端与行星搅拌轴(56)上端转动连接,所述行星搅拌轴(56)和中心搅拌轴(51)上均设有搅拌杆(58),所述保持架(55)转动安装在中心搅拌轴(51)和行星齿轮(57)的下侧,保持架(55)的下端固定有十字型弯曲搅拌架(59),所述中心搅拌轴(51)的下端与十字型弯曲搅拌架(59)的中心转动连接。
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