CN108407260A - 一种宽幅整芯阻燃输送带面胶涂敷用平行双机筒挤出机 - Google Patents
一种宽幅整芯阻燃输送带面胶涂敷用平行双机筒挤出机 Download PDFInfo
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Abstract
本发明提供一种宽幅整芯阻燃输送带面胶涂敷用平行双机筒挤出机,解决现有设备产品宽幅较窄的问题,由两组对称设置的挤出机单元组成,每个单元包括变频调速电机、等速双输出齿轮减速箱、热油循环温控系统、涂覆模具等部分,其特征在于:还包括平行布置的两组机筒、螺杆、加料系统、过渡连接头;所述等速双输出齿轮减速箱有两个输出端,分别与两机筒尾端相连;所述涂敷模具有两个进料口,分别和两机筒出料段的过渡接头相连,内部流道型腔为双衣架式,设置可调节阻流条和唇口;所述机筒和模具分区设置导热油循环加热流道。本发明满足2000‑3600mm宽幅的整芯阻燃输送带面胶的涂覆,实现拓宽输送带的宽幅、增加其产能和应用范围的目的。
Description
技术领域
本发明涉及一种输送带生产设备,更确切地说涉及一种宽幅整芯阻燃输送带面胶涂敷用平行双机筒挤出机。
背景技术
PVC/PVG整芯阻燃输送带因其优良的阻燃和抗静电性能,在煤矿、码头和钢铁公司应用日趋广泛。但是以前由于受到整体带芯强度、带体成槽性、爬坡角度等因素的限制,整芯阻燃输送带的级别相对较低,宽幅较窄,无法满足目前煤矿、码头大运量、大角度、大生产量的要求,宽幅1800mm以上的一些场合仍需大量使用钢丝绳芯橡胶输送带运送物料,增加了运营成本,浪费大量的橡胶和金属材料,提高了单位运料的能源消耗指数,输送过程中的安全性能亦无法得到有效保障。而目前随着新型合成纤维材料工业的发展,新型高强度纤维材料如高强力涤纶、芳纶纤维等合成材料的不断出现,使织物芯输送带有了不断向高强力、大宽度、轻薄型发展的可能,PVC/PVG整芯阻燃输送带向高强力、高级别、大宽幅、大角度运料方向发展也势在必然。现有设备只能实现宽度1800mm级别2500s以下的输送带的生产,输送带发展的趋势实现需要原料、设备、工艺装备一系列的革新才能实现,因此现有设备和特别是关键设备的技术改造和提升,势在必行。目前国内PVC/PVG整芯阻燃输送带普遍采用挤擦法工艺生产,其重要工艺装备--面胶的挤出机均采用单机筒或多机筒上下复合、模具为单衣架式流道形式,一定程度上满足了现有产品的生产要求,但无法达到物料运输行业发展对整芯阻燃输送带提出的大运量、大宽幅、大级别的新要求。
发明内容
本发明的目的在于克服现有技术的不足,提供一种宽幅整芯阻燃输送带面胶涂敷用双机筒挤出机,适用于宽幅PVC/PVG整芯阻燃输送带面胶的挤出涂敷,实现2000-3600mm宽幅的整芯阻燃输送带面胶的涂覆,结合新型高强度纤维在骨架材料中的运用,可以实现拓宽输送带的级别、增加其品种和应用范围的目的,对物料输送行业有着革命性的意义。
本发明由两组对称设置的挤出机单元组成;所述每组挤出机单元包括可移动机架、变频调速电机、等速双输出硬齿面齿轮减速箱、机筒、螺杆、热油循环温控系统、加料系统、过渡连接头、双衣架流道涂覆模具、模具连接螺栓、电控箱等部分组成;每组挤出机组都安装在可移动机架上;变频调速电机通过带轮、三角带驱动减速箱;减速箱输出端和机筒、螺杆相连,模具通过过渡连接头与机筒相连,两组挤出机的对称的模具单元通过模具连接螺栓连接在一起。
其特征在于:所述等速双输出硬齿面齿轮减速箱,有两个输出端,输出速度相同;所述机筒和螺杆都有两个,分别和减速箱的两输出端相连;所述双衣架流道涂敷模具有两个进料口,分别和两机筒出料段的过渡接头相连,内部流道型腔为双衣架式;所述机筒和模具分区上设置导热油循环加热流道;所述每个挤出机单元含一对同规格尺寸的机筒和一对同规格尺寸螺杆平行布置,每一套的安装方式与常规安装方式相同,机筒一端法兰安装在等速双输出减速箱上,螺杆安装在机筒内,一端花键安装在等速双输出减速箱输出端齿轮的花键套内;所述导热油循环换热加热冷却系统采用多路单控循环换热温度控制器,通过管路与机筒、机头模具上热油加热流道相连;所述加料系统采用真空加料装置上料,采用透明料筒储料,空气震荡装置防止堵料、棚料;所述双衣架流道涂覆模具采用两路进料,模具内型腔设计成双衣架式,采用内设计可调阻流条和可调模唇;每单元挤出机均设置电控箱,用于电机启停、速度以及加热和温度控制。
工作原理为:生产时先根据产品要求调整好阻流条和模唇,装好模具控制输送带厚度的模条,料箱加料,按工艺要求把机筒各区、模具各区加热到相应温度。启动变频调速电机,由低到高缓慢加速,驱动等速双输出减速箱和螺杆转动,PVC/PVG粒料或粉料介质分别经过机筒、螺杆加热、挤压、搅拌,塑化成熔融状态,分别经两个螺杆挤压、经两个模具进料口进入模具内双衣架流道分流、摊薄,再通过阻尼块均压、唇口调节厚度后,直到模具唇口均匀吐出胶片,适当调整阻流条和唇口,使所吐出胶片达到生产要求;启动两边底座驱动电机,使模具在中部合在一起,锁紧模具螺栓,控制输送带厚度的专用模条和涂敷模具组成涂敷型腔,塑化完成后的输送带带芯从涂敷型腔通过;启动带芯牵引机、左右单元挤出机,带芯在牵引机的作用下从模具间通过,两面挤出机模具挤出胶料均匀涂覆挤擦在浸渍并塑化好匀速运行的带芯两面上,形成上下覆盖胶层,完成覆盖胶的涂敷过程。
上述技术方案可知,本发明利用特殊的结构、独特机筒复合的驱动、安装、加热、加料和吐料方式设计的整芯阻燃输送带面胶挤出机,满足宽幅整芯阻燃输送带输送带面胶的涂覆要求。对比现有技术具有以下有益效果:1、通过双机筒平行布置,不仅满足宽幅整芯阻燃带面胶需用量的要求,还优化了宽幅胶片压力均匀度;2、变频电机和等速双输出减速箱的应用,保证了通过双衣架流道结构的模具,满足大量胶料分流均压的要求;3、通过可调阻流条和可调唇口的设置,实现涂覆胶片的厚度可调节;4、通过多路单控循环换热系统,满足机筒和模具每一区温度精准控制的要求;5、真空加料机以及透明料筒的采用,避免了缺料、搭料、蓬料现象的出现,保证了连续生产的进行,确保产品质量。总之本发明通过采用等速双输出减速机驱动、双机筒平行塑化挤料、热油载体多区单控单循环换热控制机筒和模具温度、双衣架式流道模具吐料涂覆面胶等技术手段,有效地实现了2000-3600mm及以下宽度的整芯阻燃输送带面胶的涂覆,大大拓宽了PVC/PVG整芯阻燃输送带的品种和适用范围。
附图说明
图1是本发明双机筒挤出机的俯视图。
图2是本发明设备布置的结构示意图。
图3是本发明的模具A-A剖视图图。
图4是本发明的模具俯视图。
图5是本发明的模具下模块双衣架流道俯视图。
图中,1. 可移动机架,101.平台,102.驱动轮组, 103.行走轮组, 2.变频调速电机,3.等速双输出硬齿面齿轮减速箱,4.机筒,41.左机筒,42.右机筒,5螺杆,51.左螺杆,52.右螺杆,6.导热油多区单控单循环温控系统,61. 导热油多区单控单循环温控装置,62.热油管道,63.热油加热流道,7.加料系统,71.左料桶,72.右料桶,8.流道过渡接头,9.双衣架流道涂覆模具,91.上模块,92.下模具,93.边护板, 94. 阻流块, 95. 阻流块调节装置,96. 唇口, 97. 唇口调节装置,98.厚度模条,99.双衣架流道,90.上下模块连接螺栓,10.模具连接螺栓、11.电控箱。
具体实施方式
下面结合附图对本发明作进一步的说明。
如图1所示,本发明由两组对称设置的挤出机单元组成;所述每组挤出机单元包括可移动机架1、变频调速电机2、等速双输出硬齿面齿轮减速箱3、双机筒41、42、双螺杆51、52、热油循环温控系统6、加料系统7、流道过渡连接头8、双衣架流道涂覆模具9、模具连接螺栓10、电控箱11等部分组成;每组挤出机组都安装在可移动机架1上;变频调速电机2通过带轮、三角带驱动等速双输出减速箱3;等速双输出减速箱3输出端和机筒4、螺杆5相连,双衣架流道涂覆模具9通过流道过渡连接头8与机筒4相连,两组挤出机的对称的模具单元通过模具连接螺栓10连接在一起,两组模具9和两侧厚度模条98组成涂覆型腔,塑化好的带芯从中间经过,两面的胶料涂覆在两侧面上,形成输送带覆盖胶。
结合如图2所示,每个挤出机单元含一对机筒41、42和一对螺杆51、52,平行布置,每一个机筒都有一个加料筒41、42,螺杆分别安装在对应的机筒内,每一套的安装方式与常规安装方式相同,机筒41、42一端法兰分别安装在等速双输出减速箱3的两个输出端上,另一端分别通过流道过渡接头81、82与模具的两个进料口相连接;螺杆51、52安装在对应机筒41、42内,另一端花键分别安装在等速双输出减速箱3两输出端齿轮的花键套内。
如图3所示所述双衣架流道涂敷模具由上模块91、下模具92、边护板93、阻流块94、阻流块调节装置95、唇口96、唇口调节装置97、厚度模条98等组成,上、下模块91、92由模块连接螺栓90连接,中间设置双衣架流道99;所述上模块91上设置阻流块94和阻流块调节装置95,用以调节均匀压力和流量;设置唇口96和唇口调节装置97,用以调节覆盖胶吐出的厚度,边护板93安装在每组模具的两侧,厚度模条98安装在唇口96两侧。
结合如图4所示,下模块92型腔俯视图,双衣架流道涂覆模具9型腔进料端设置双进料口,采用两路进料,模具内型腔99设计成双衣架式,进入型腔后分别成衣架状散开,结合采用设计可调阻流条和可调模唇的方式调整均匀出料压力和厚度,可以保证宽幅面胶充足的用料量和涂覆压力,满足涂覆宽幅整芯带面胶的要求。
如图1所示,所述可移动机架1由平台101、驱动轮组102、行走轮组103组成;所述平台用槽钢和钢板组焊而成,用于承载挤出机和挤出机的合模开模拆换模具的行走。
所述等速双输出减速箱3采用硬齿面齿轮,输出端齿轮内孔为花键套式,用于挤出机螺杆5驱动端的安装;等速双输出端的设置可实现同时两根螺杆51、52分别在两不同机筒41、42内的等速转动。
所述导热油循环换热加热冷却系统6采用多路单控循环换热温度控制装置61,通过管路62和机筒和模具上各区热油加热通道63相连接,闭路循环,精确控制机筒4、模具9上各区的温度。
所述加料系统7采用真空加料装置上料,采用透明料筒储料,空气震荡装置辅助进料,防止搭料、蓬料现象的出现。
每单元挤出机均设置电控箱11,用于电机启停、速度以及加热和温度控制。
Claims (1)
1.一种宽幅整芯阻燃输送带面胶涂敷用平行双机筒挤出机,由两组对称设置的挤出机单元组成;每个单元包括可移动机架(1)、变频调速电机(2)、等速双输出齿轮减速箱(3)、热油循环温控系统(6)、涂覆模具(9)等部分,其特征在于:还包括平行布置的两组机筒(4)、螺杆(5)、加料系统(7)、流道过渡连接头(8);所述等速双输出齿轮减速箱(3)有两个输出端,分别与两机筒(41)、(42)尾端相连;所述涂敷模具(9)有两个进料口,分别和两机筒(41)、(42)出料段的流道过渡接头(81)、(82)相连,内部流道型腔为双衣架式,设置可调节阻流条(94)和唇口(96);涂敷模具(9)吐出唇口两边设置护板(93)和厚度模条(98);所述机筒(4)和涂敷模具(9)分区设置导热油循环加热流道(63)。
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