CN1041432A - 动力传动皮带制造法及其挠性硫化套箱 - Google Patents
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Abstract
动力传动皮带制造方法包括以下步骤:(1)将皮带伸展,伸拉和收缩各部分以层压型坯形式缠绕在成型滚筒周边,并将未硫化皮带型坯反向成型,皮带型坯外侧全部被套箱内壁表面覆盖并与有排气沟槽的挠性套管相连接,该套箱在其内壁表面上开出带敞口端部的排气沟槽,(2)借助套箱上的排气沟槽将在加热和加压处理过程中残留在皮带型坯内和型坯表面上的空气排放出去,(3)对制造出来的套筒状硫化皮带型坯进行抛光和切成环带。
Description
本发明涉及动力传动皮带制造方法和在上述方法中使用的挠性硫化套箱以及套筒状硫化皮带的制造方法。
本发明具体地涉及动力传动皮带的制造方法和该方法所用的挠性硫化套箱,更具体地涉及V形皮带,在皮带纵向带有多个V形肋条的V形肋条皮带、以及在皮带宽度方向连接有多个V形皮带的带状皮带。皮带制造方法由一个硫化成形装置组成,在该装置中,硫化套箱套在套筒形的未硫化皮带型坯的外侧,从所述套箱一侧进行加热和加压。
动力传动皮带已知的常规制造方法结合动力传动皮带的一种,即,V形肋条皮带的一个实例进行介绍。例如,如日本特许公报No.15310/1977所示,用一种基体方法,在该方法中,将圆周方向有许多V形沟槽的筒状硫化橡胶基体插进一个圆柱形心轴并有平底橡胶层或成形橡胶层缠绕在其上。然后,螺旋地缠绕的伸拉体部分地压入平的橡胶层。将上层橡胶层和织物顺序层压之后,再进行硫化。这样得到的硫化套箱最后被切成单个的V形肋条皮带。在日本特许公报No.17552/1977中还提出了一种磨削法,其中,将包括由轴上的织物,上层橡胶层,伸拉体和下层橡胶层顺序层叠而成的叠层结构的反向型坯进行硫化。这样得到的硫化套筒借助于磨轮进行磨削以加工出多个V形槽,该磨轮是由圆柱表面部分和带多个V型槽的部分构成的整体实心结构。
在上述基体法情形下,在硫化时将拉力心线放入下层橡胶层,因此引起拉方心线的不均匀分布并导致皮带过早断裂。而且,硫化时未硫化皮带型坯与橡胶基体之间存在的任何空气仍保持未被去除,引起皮带不合格的肋形。
另一方面,以上磨削法不会遇到如以上基体法所存在的由于拉力心线的不规则排列这样的问题。但是,当挠性套箱套到由反向成形产生的未硫化皮带型坯的外侧并进行硫化时,套箱和橡胶合成物(与套箱接触的皮带型坯的主要材料)趋于紧密接触,从而使空气能从组分材料中挤出,并且,存在于套箱与橡胶合成物之间的空气在硫化前仍然被夹在其间。硫化后,这些空气引起海绵状损伤或皮带表面的凹入,或者滞留在皮带材料里的气泡群使得皮带整个的是脆弱的。
本发明是为了解决以上问题的。更具体地说,本发明的目的是提供动力传动皮带的制造方法,该方法能通过改进磨削法中装到套筒状皮带型坯中的挠性套箱并且提供用于本发明方法的改进的挠性套箱,来有效地去除皮带型坯内或皮带型坯与套箱之间的残留空气。
为实现以上目的,本发明包括如下内容,即,本发明的动力传动皮带制造方法由将未硫化的皮带型坯缠绕在成形滚筒的圆周表面组成。皮带型坯包括构成每条皮带的伸展部、伸拉部和收缩部的层压件。将挠性套箱加在处于反向成形状态的未硫化皮带的外面,该挠性套箱带有分布在其整个内壁表面并以敞口而终止的排气沟槽。成形滚筒、未硫化皮带型坯和套箱这样同心地组装起来并在硫化罐中进行加热并加压。皮带型坯内或表面上的残留空气通过以上排气沟槽释放到大气中,将制成的套筒形的已硫化皮带型坯再进行抛光和切成环带。
套箱内壁表面开出的排气沟槽在套箱的上下两端是敞口的,并且没有阻塞部分(不通端)。
根据本发明用于动力传动皮带制造的硫化挠性套箱在整个内壁表面设有排气沟槽,而这些沟槽在套箱两端是以敞口终止的。即,排气沟槽在任何部位都与套箱两端的沟槽终端开口相连通。
沟槽的尺寸,即宽度和深度设定为套箱厚度的1/20-1/5。在把硫化挠性套箱装到环绕筒形的成形滚筒的未硫化皮带型坯外面之后,在加热和加压期间,在皮带型坯中以气泡形式存在的残留空气和夹在未硫化皮带型坯与套箱之间的空气通过套箱整个内壁表面设置的排气沟槽,排放到套箱两端,然后到大气中。
图1表示在硫化罐中硫化成形时,未硫化截面图的中央截面视图:
图2为图1“A”部位的放大的细节视图;
图3为在硫化滚筒上成形的未硫化皮带型坯的局部剖视图;
图4为硫化套箱的斜视图;
图5-图8为与图4类似的其它实施例,
图9为一种动力传动皮带,即,V型肋条皮带的透视图。
根据本发明的动力传动皮带的制造方法,将以V形肋条皮带(一种动力传动皮带)作为实例进行描述。参照最佳实施例的附图来描述该制造方法所用的挠性硫化套箱。
图1表示在硫化成形时未硫化皮带型坯中央垂直剖视图。图2表示图1的“A”部位的放大的细节视图。图3表示皮带型坯在成形滚筒上,制造过程中未硫化皮带型坯的局部剖视图。图4表示硫化套箱的透视图,而图5至图8是与图4相似的其它实施例的视图,图9表示一种动力传动皮带,即V型肋条皮带的部分透视图。
在铁筒成形滚筒(1)的周边,缠绕有一层或多层最好是一或两层涂有橡胶的宽角织物(3),该宽角织物包含棉纱线或棉纱线与合成纤维混纺线的经纬线,经纬交角为90-155℃,并将宽角部分安排在皮带纵向上。在此织物上先缠绕天然橡胶、环己烷,异丁橡胶,丁基橡胶的单一橡胶材料或这些橡胶材料的合适混合物的薄的未硫化上层衬垫橡胶层(4),再在一定压力下螺旋缠绕上尼龙,聚酯,纤维B或玻璃纤维的低伸长高强度的拉伸心线(5)。
然后,再缠绕上和上述上层衬垫橡胶层(4)同样材料的未硫化的下层衬垫橡胶层(6)。最后,缠绕上和以上两种衬垫橡胶层相同材料的有足够预定厚度的未硫化压缩橡胶层,以便形成与在柱形成形滚筒(1)上的成形状态倒置的未硫化皮带型坯(8)。应当指出,可以根据需要,在以上压缩橡胶层(7)内的皮带宽度方向上嵌以各种短纤维(2)。
为了对上述未硫化皮带型坯(8)进行硫化,将上,下边缘带有朝外的密封凸缘的挠性套箱装在其外侧周边。该挠性套箱是由抗热抗氧化的橡胶合成物构成的。最好的材料包括,例如异丁橡胶,丁腈橡胶,乙烯丙烯三聚物。
如图4所示,挠性套箱(9)在整个内壁表面设有排气沟槽(10),虽然排列和形状可自由选择,但重要的是这种网状排气沟槽分布在整个内壁表面并在套筒(9)上下两端相连通和敞口。即,排气沟槽(10)必须包含带有向着套箱上,下两端开口的螺旋槽(10a)(见图4),或与套箱轴线平行地伸出的多组直线沟槽的集合并分别在套箱(见图5)上下两端敞口,或者是螺旋槽(10a)和与此螺旋槽(10a)相交的多个直线槽(10b)的组合(见图6),或以套箱圆周方向对齐的独立环形槽组和与该独立环形槽(10c)相交的多个直线槽(10b)的组合(见图7),或者对套箱(9)的高度具有不同倾斜方向的两种斜槽(10d,10e)的组合(见图8)。这些沟槽组在套箱内壁表面的许多点上相互交叉并至少排气沟槽(10)的上,下端在套筒的上,下端是敞口的。
排气沟槽(10)的尺寸,更具体地说沟槽的宽度和深度要设定在硫化套筒(9)厚度的1/20-1/5的范围内。
以排气效率而论这些尺寸最好是设定在1/15-1/10的范围内。换言之,如果小于套箱(9)厚度的1/20,抗压橡胶层(7)的一部分橡胶合成物就会在硫化期间流入排气沟槽(10)内使排气效果显著下降。另一方面,如果采用套箱厚度的1/5或更多,则抗压橡胶层(7)的橡胶合成物的流入量会过多,导致对整个传动皮带(最终产品)形状的严重损坏或者对规则的定向产生严重的阻碍,这种定向应确保当把这些短纤维(2)混合进抗压橡胶层(7)中时将短纤维与皮带宽度方向进行正确地找正。
将装在硫化套箱(在内壁表面带有排气沟槽(10))周边上的未硫化皮带型坯(3)放置在硫化罐(13)中。上盖(14)放置于同心地组合在一起的成形滚筒(1),皮带型坯(8)和挠性套箱(9)的顶部。与皮带型坯(8)上下端相连通的多个排气管(15,15)放置在筒形成形滚筒(1)的上部和下部位置,所述的排气管(15)的端部与硫化罐(13)外部,即,与大气相连通。
硫化液供应管道(16)在导入成形滚筒(1)时的内压力最好是4.0-6.0kg/cm2,而在硫化罐(13)和套筒(9)之间流通的硫化罐(13)的硫化液供应管道(17)的外压力最好是7.5-9.5kg/cm2。皮带型坯(8)借助于通过硫化液供应管道16和17的内、外压力下提供的加热和加压流体进行硫化成形。
皮带型坯(8)内的残留空气或夹在皮带型坯(8)和套箱(9)之间的空气是由在套筒内壁表面开出的排气沟槽通过排气管道(15)排入大气的。
然后将宽的套筒状的硫化皮带型坯从筒形成形滚筒(1)上移去并传送到其直径可自由改变的胀型滚筒或一对滚筒上。
硫化皮带型坯带有经抛光加工的肋条(22),然后用刀割机切切成预定宽度的环带。这样,就得到如图9所示的一种动力传动皮带,即,V型肋条皮带(21)。
如果预先将挠性套箱装在筒形成形滚筒(1)的周边,硫化皮带型坯当它没有从成形滚筒(1)上取下时,可单个地抛光成宽的带肋条的硫化皮带,而且,可以很容易用切割机将它切成预定宽度的环带和V型肋条带。
本发明在于在挠性套筒的整个内壁表面上设置排气沟槽,该套箱是在将宽的未硫化皮带型坯变换为套筒状的硫化皮带型坯的处理过程中用于未硫化皮带型坯外部加压的基本构件。排气沟槽能够将在硫化皮带型坯期间皮带和皮带型坯与套筒之间的残留空气完全而容易地去除。
本发明使得动力传动皮带易于制造,这样制造的传动皮带强度好而且没有空气阱,并且,有满意的外观而没有由于气泡形成的海绵状缺陷或不平整性。
Claims (5)
1、一种动力传动皮带制造方法,其特征在于包括:
将皮带伸展,伸拉和收缩各组成部分以层压型坯形式缠绕在成形滚筒周边,未硫化皮带型坯外侧全部由挠性套箱的内壁表面覆盖并与在其内壁表面开出带有敞口端部的排气沟槽的挠性套箱相连,
将在加热和加压处理期间型坯内或型坯表面上的残留空气通过套箱的排气沟槽排放出来,
将制成的套筒状的硫化皮带型坯进行抛光和切成环带。
2、一种用于制造所述动力传动皮带的挠性硫化套箱,其特征在于:与以层压型坯形式缠绕在圆筒形滚筒周边上的未硫化皮带型坯的外侧相连接的所述套筒在其整个内壁表面上开有排气沟槽,并且,所述排气沟槽在套筒两端以敞口终止。
3、根据权利要求2所述的用于制造动力传动皮带的挠性硫化套箱,其特征在于:所述排气沟槽可在任何一点上和套箱两端的沟槽终端开口连通。
4、根据权利要求2和3所述的用于制造动力传动皮带的挠性硫化套箱,其特征在于:所述排气沟槽的宽度和深度设定在套筒厚度的1/20-1/5范围内。
5、一种套筒状硫化皮带制造方法,其特征在于包括:
将皮带伸展、伸拉和收缩各组成部分,以层压型坯形式缠绕在成形滚筒周边,将未硫化皮带型坯反向成形,所述皮带型坯外侧全部被所述套箱的内壁表面所覆盖,并且,与在其内表面上开有带敞口终端的排气沟槽的挠性套箱相连,
借助所述套箱上的排气沟槽,把在加热和加压处理过程中残留在皮带型坯内和型坯表面上的空气排放出去。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP212786/88 | 1988-08-26 | ||
JP63212786A JPH069828B2 (ja) | 1988-08-26 | 1988-08-26 | 動力伝動用ベルトの製造方法及び該方法に用いる加硫用可撓性ジャケット |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1041432A true CN1041432A (zh) | 1990-04-18 |
CN1026963C CN1026963C (zh) | 1994-12-14 |
Family
ID=16628359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN89106967A Expired - Fee Related CN1026963C (zh) | 1988-08-26 | 1989-08-25 | 用于制造动力传动皮带的挠性硫化套箱 |
Country Status (7)
Country | Link |
---|---|
US (1) | US5073098A (zh) |
EP (1) | EP0355855B1 (zh) |
JP (1) | JPH069828B2 (zh) |
CN (1) | CN1026963C (zh) |
AT (1) | ATE112713T1 (zh) |
DE (1) | DE68918782T2 (zh) |
SG (1) | SG23621G (zh) |
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CN106926399A (zh) * | 2017-04-12 | 2017-07-07 | 无锡市贝尔特胶带有限公司 | 橡胶齿型传动带硫化胶套模具及制作胶套的方法 |
CN109016286A (zh) * | 2018-06-12 | 2018-12-18 | 芜湖市精准传动系统研究院 | 一种传动带的成型硫化方法 |
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- 1989-08-25 CN CN89106967A patent/CN1026963C/zh not_active Expired - Fee Related
- 1989-08-28 DE DE68918782T patent/DE68918782T2/de not_active Expired - Lifetime
- 1989-08-28 EP EP89115819A patent/EP0355855B1/en not_active Expired - Lifetime
- 1989-08-28 SG SG1995905899A patent/SG23621G/en unknown
- 1989-08-28 AT AT89115819T patent/ATE112713T1/de not_active IP Right Cessation
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Publication number | Priority date | Publication date | Assignee | Title |
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CN106926399A (zh) * | 2017-04-12 | 2017-07-07 | 无锡市贝尔特胶带有限公司 | 橡胶齿型传动带硫化胶套模具及制作胶套的方法 |
CN109016286A (zh) * | 2018-06-12 | 2018-12-18 | 芜湖市精准传动系统研究院 | 一种传动带的成型硫化方法 |
CN109016286B (zh) * | 2018-06-12 | 2021-02-12 | 芜湖市精准传动系统研究院 | 一种传动带的成型硫化方法 |
Also Published As
Publication number | Publication date |
---|---|
DE68918782T2 (de) | 1995-02-16 |
US5073098A (en) | 1991-12-17 |
DE68918782D1 (de) | 1994-11-17 |
CN1026963C (zh) | 1994-12-14 |
ATE112713T1 (de) | 1994-10-15 |
EP0355855B1 (en) | 1994-10-12 |
JPH069828B2 (ja) | 1994-02-09 |
EP0355855A3 (en) | 1991-11-13 |
JPH0260716A (ja) | 1990-03-01 |
SG23621G (en) | 1995-09-01 |
EP0355855A2 (en) | 1990-02-28 |
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