CN216182115U - 一种纸浆模塑杯盖 - Google Patents
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Abstract
本实用新型属于纸浆杯盖制造技术领域,尤其涉及一种纸浆模塑杯盖。它解决了现有技术设计不合理等技术问题。本实用新型提供了一种纸浆模塑杯盖包括盖顶部,连接于盖顶部外翼缘下侧并且径向向外延长的横向延长部,连接于横向延长部外缘并且轴向向下延长的纵向延长部,纵向延长部呈筒状,在纵向延长部内壁一体成型有向内凸的内凸扣,在纵向延长部外壁设有使得内凸扣内径进一步缩小的滚压凹槽。本实用新型优点在于:内凸扣的缩小则可以提高杯盖扣合于杯子上的锁紧力,以及可以使得杯盖其多次取下并盖合在杯子上的密封性。
Description
技术领域
本实用新型属于纸浆杯盖制造技术领域,尤其涉及一种纸浆模塑杯盖。
背景技术
纸浆模塑杯盖其内壁有一内凸扣,扣合于杯子上从而形成密封。现有的纸浆模塑杯盖其有多种结构,例如中国台湾兴中环保公司的纸浆杯盖其采用在倒U形槽的一侧壁直接成型一内凸扣。还有的公司设计为等壁厚的杯盖,然后利用滚压或旋压方式在杯盖的外壁进行机加工,此时杯盖的外壁形成加工凹槽,在杯盖的内壁形成与加工凹槽对应的内凸扣。
以上的两种杯盖结构其基本涵盖了内凸扣成型的全部方式,虽然上述的杯盖其能够进行与杯子锁定,但是,上述的两种方式其还是存在一定缺陷,例如,因为直接成型在纸浆杯盖一侧壁的内凸扣其由于脱模径向向外扩张内凸扣直径导致内凸扣内径增大,此时杯盖与杯子密封性大幅下降。同时,这种方式其不利于杯盖脱模,效率低并且产品报废率较高。
其次,等壁厚采用滚压方式其虽然能够成型出内凸扣,但是,这种杯盖在二次盖合在杯子上时,由于取下杯盖过程中会导致内凸扣具有较大的径向向外扩张形变(壁厚相等其结构强度差),导致杯盖和杯子之间的密封性较差,存在密封泄漏等等现象。
实用新型内容
本实用新型的目的是针对上述问题,提供一种可以解决上述技术问题的一种纸浆模塑杯盖。
为达到上述目的,本实用新型采用了下列技术方案:
本实用新型提供了一种纸浆模塑杯盖包括盖顶部,连接于盖顶部外翼缘下侧并且径向向外延长的横向延长部,连接于横向延长部外缘并且轴向向下延长的纵向延长部,纵向延长部呈筒状,在纵向延长部内壁一体成型有向内凸的内凸扣,在纵向延长部外壁设有使得内凸扣内径进一步缩小的滚压凹槽。
在上述的一种纸浆模塑杯盖中,所述滚压凹槽槽底至内凸扣内凸顶之间的距离大于纵向延长部的单侧壁厚。
在上述的一种纸浆模塑杯盖中,所述滚压凹槽槽深小于内凸扣内凸顶至纵向延长部内壁之间形成的凸起长度。
在上述的一种纸浆模塑杯盖中,所述滚压凹槽为V形环状槽。
在上述的一种纸浆模塑杯盖中,所述内凸扣为环状内凸扣。
作为另外一个方案,在上述的一种纸浆模塑杯盖中,所述内凸扣为多个绕纵向延长部内圆周均匀分布的弧形内凸扣。
在上述的一种纸浆模塑杯盖中,所述内凸扣一体成型于纵向延长部的内壁中部。
在上述的一种纸浆模塑杯盖中,所述纵向延长部单边纵向截面包括上厚部和连接在上厚部下侧的下薄部,所述内凸扣成型于上厚部内壁,或者,内凸扣成型于上厚部和下薄部的连接处内壁。
在上述的一种纸浆模塑杯盖中,所述纵向延长部内壁包括从上往下分布的上竖直内壁和下倾斜向外内壁,内凸扣具有顶部弧形凸面,顶部弧形凸面通过衔接凹面分别与上竖直内壁和下倾斜向外内壁连接。
在上述的一种纸浆模塑杯盖中,横向延长部包括平直水平横向部和向上拱起的拱形部,平直水平横向部的下表面和拱形部的下表面通过弧形过渡凸面衔接。
与现有的技术相比,本实用新型的优点在于:
当内凸扣一体成型后,再利用滚压凹槽进行进一步的向内挤压加工,此时会使得内凸扣的内径进一步缩小,而内凸扣的缩小则可以提高杯盖扣合于杯子上的锁紧力,以及可以使得杯盖其多次取下并盖合在杯子上的密封性。
设计的滚压凹槽其可以适当减小在一体成型时内凸扣的内径,内径缩小可以降低脱模难度,以及降低模具加工难度,和进一步降低制造成本。
设计的内凸扣其增加了纵向延长部的壁厚,可以延长使用寿命和提高结构强度。
附图说明
图1是本实用新型提供的纸浆模塑杯盖立体结构示意图。
图2是本实用新型提供的纸浆模塑杯盖俯视结构示意图。
图3是图2中沿线A-A剖视结构示意图。
图4是图3中B处放大结构示意图。
图5是图4除去标号后的结构示意图。
图6是本实用新型提供的实施例二结构示意图。
图7是本实用新型提供的实施例三结构示意图。
图8是本实用新型提供的实施例四结构示意图。
图中,盖顶部10、横向延长部20、平直水平横向部200、拱形部201、弧形过渡凸面202、纵向延长部30、上厚部300、下薄部301、上竖直内壁302、下倾斜向外内壁303、内凸扣40、顶部弧形凸面400、衔接凹面401、滚压凹槽50、距离L1、凸起长度 L2。
具体实施方式
以下是实用新型的具体实施例并结合附图,对本实用新型的技术方案作进一步的描述,但本实用新型并不限于这些实施例。
实施例一
如图1-图2所示,本实施例提供一种纸浆模塑杯盖包括盖顶部10,盖顶部10的构造其中心具有下沉部,以及设于盖顶部10 上的饮口100和排气孔101。
连接于盖顶部10外翼缘下侧并且径向向外延长的横向延长部20。具体地,如图3-图5所示,该横向延长部20包括平直水平横向部200和向上拱起的拱形部201,平直水平横向部的下表面和拱形部的下表面通过弧形过渡凸面202衔接。
平直水平横向部200与盖顶部10外翼缘下侧连接,拱形部与平直水平横向部200远离盖顶部10的外缘连接。
弧形过渡凸面202其可以便于杯子顶部凸缘的抵住,给杯盖提供盖合稳定性,以及便于杯盖的取下。
连接于横向延长部20外缘并且轴向向下延长的纵向延长部 30,纵向延长部30呈筒状。纵向延长部30其只有一内壁,在与杯子配合后,本实施例的杯盖和杯子形成外单侧密封。
在纵向延长部30内壁一体成型有向内凸的内凸扣40,一体成型其可以提高制造效率,以及结构强度。
内凸扣40其可以扣在杯子的凸缘以形成外密封。
如图3-图5所示,在纵向延长部30外壁设有使得内凸扣40 内径进一步缩小的滚压凹槽50,滚压凹槽50为机加工滚压槽或者机加工旋压槽,当内凸扣40一体成型后,再利用滚压凹槽50 进行进一步的向内挤压加工,此时会使得内凸扣40的内径进一步缩小,而内凸扣40的缩小则可以提高杯盖扣合于杯子上的锁紧力,以及可以使得杯盖其多次取下并盖合在杯子上的密封性。同时,本实施例设计的滚压凹槽50其可以适当减小在一体成型时内凸扣40的内径,内径缩小可以降低脱模难度,以及降低模具加工难度,和进一步降低制造成本,当成型完毕之后再进行滚压加工,使得内凸扣40的内径达到设定内径或者比设定内径更小。
优选地,本实施例的内凸扣40一体成型于纵向延长部30的内壁中部。此时杯子2的凸缘20位于内凸扣40上方并扣于凸缘下侧,当然,内凸扣40还可以是中部稍微偏上位置。
进一步地,本实施例滚压凹槽50槽底至内凸扣40内凸顶之间的距离L1大于纵向延长部30的单侧壁厚,这种结构主要是对设有内凸扣40处的壁厚形成加强,以防止自行形变或者脱模时受到径向扩张力的情况下发生径向形变。
其次,如图3-图5所示,滚压凹槽50槽深小于内凸扣40内凸顶至纵向延长部30内壁之间形成的凸起长度L2。这种结构的优势在于提高内凸扣40处的壁厚强度。
优选地,本实施例滚压凹槽50为V形环状槽,即一圈的环形槽,其可以便于加工制造,以及提供一圈密封性。进一步地,滚压凹槽50的槽底为圆弧形,在滚压凹槽50的槽口两侧具有倒角,以防止槽口发生切断现象,同时,还可以提高美观性。
优选地,本实施例的内凸扣40为环状内凸扣。环状内凸扣的设计其可以提高一圈密封性,以及对内凸扣形成径向结构加强。
具体地,如图3-图5所示,本实施例的纵向延长部30单边纵向截面包括上厚部300和连接在上厚部300下侧的下薄部301,所述内凸扣40成型于上厚部300内壁;或者内凸扣40成型于上厚部300和下薄部301的连接处内壁。
当然,这里的上厚部300和下薄部301的厚度可以相等。
上厚部300厚度大于下薄部301的厚度,其可以提高杯盖在锁扣时与杯子的配合强度,同时,还可以便于提高设有内凸扣40 的上厚部300其结构强度。
进一步地,纵向延长部30内壁包括从上往下分布的上竖直内壁302和下倾斜向外内壁303,具体地,上竖直内壁302设于上厚部300内壁,而上厚部300的外壁为向外倾斜面,下倾斜向外内壁303设于下薄部301内壁,这里的下倾斜向外内壁303为倾斜斜面或者是倾斜大圆弧凹面。以及下薄部301的外壁为下倾斜外坡面。
即,下薄部301为圆锥筒状,其直径从上往下逐渐增大,以形成杯盖盖合在杯子上时形成的导向。
如图3-图5所示,内凸扣40具有顶部弧形凸面400,顶部弧形凸面400的圆心与滚压凹槽50的槽底圆心不重叠,即,两个圆心相互间隔分布并且位于同一水平面上,顶部弧形凸面400通过衔接凹面401分别与上竖直内壁302和下倾斜向外内壁303连接。衔接凹面401有两个,一个为上衔接凹面,一个为下衔接凹面,利用弧形凹面其可以形成对过渡衔接,以利于开模制造和脱模。
以及可以便于与杯子的分离组合。
以上圆心的不重合可以使得壁厚厚度加厚,以提高结构强度。
本实施例的制造过程如下:
S1、成型,包括湿坯成型和进一步的热压成型,成型后在杯盖的纵向延长部30内壁直接成型有内凸扣40;
S2、槽加工,利用机加工在杯盖的纵向延长部30外壁进行加工,在纵向延长部30相对内凸扣40的外壁加工出滚压凹槽50,这里的机加工为滚压加工或者旋压加工等等方式,加工完成后得到杯盖成品。
实施例二
本实施例的结构和原理与实施例一基本相同,不同的结构在于:如图6所示,横向延长部20为一整平直水平横向部。
实施例三
本实施例的结构和原理与实施例一基本相同,不同的结构在于:如图7所示,所述内凸扣40为多个绕纵向延长部30内圆周均匀分布的弧形内凸扣,这种方式采用径向向内箍紧收缩制得。
实施例四
基于实施例一,如图8所示,一种纸浆模塑杯套件包括杯体 2,所述纸浆模塑杯套件还包括实施例一所述的纸浆模塑杯盖1,纸浆模塑杯盖盖在杯体顶部。
本文中所描述的具体实施例仅仅是对本实用新型精神作举例说明。本实用新型所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,但并不会偏离本实用新型的精神或者超越所附权利要求书所定义的范围。
Claims (10)
1.一种纸浆模塑杯盖,包括盖顶部(10),连接于盖顶部(10)外翼缘下侧并且径向向外延长的横向延长部(20),连接于横向延长部(20)外缘并且轴向向下延长的纵向延长部(30),纵向延长部(30)呈筒状,其特征在于,在纵向延长部(30)内壁一体成型有向内凸的内凸扣(40),在纵向延长部(30)外壁设有使得内凸扣(40)内径进一步缩小的滚压凹槽(50)。
2.根据权利要求1所述的一种纸浆模塑杯盖,其特征在于,所述滚压凹槽(50)槽底至内凸扣(40)内凸顶之间的距离(L1)大于纵向延长部(30)的单侧壁厚。
3.根据权利要求1所述的一种纸浆模塑杯盖,其特征在于,所述滚压凹槽(50)槽深小于内凸扣(40)内凸顶至纵向延长部(30)内壁之间形成的凸起长度(L2)。
4.根据权利要求1或2或3所述的一种纸浆模塑杯盖,其特征在于,所述滚压凹槽(50)为V形环状槽。
5.根据权利要求1或2或3所述的一种纸浆模塑杯盖,其特征在于,所述内凸扣(40)为环状内凸扣。
6.根据权利要求1或2或3所述的一种纸浆模塑杯盖,其特征在于,所述内凸扣(40)为多个绕纵向延长部(30)内圆周均匀分布的弧形内凸扣。
7.根据权利要求1所述的一种纸浆模塑杯盖,其特征在于,所述内凸扣(40)一体成型于纵向延长部(30)的内壁中部。
8.根据权利要求7所述的一种纸浆模塑杯盖,其特征在于,所述纵向延长部(30)单边纵向截面包括上厚部(300)和连接在上厚部(300)下侧的下薄部(301),所述内凸扣(40)成型于上厚部(300)内壁;或者内凸扣(40)成型于上厚部(300)和下薄部(301)的连接处内壁。
9.根据权利要求1所述的一种纸浆模塑杯盖,其特征在于,所述纵向延长部(30)内壁包括从上往下分布的上竖直内壁(302)和下倾斜向外内壁(303),内凸扣(40)具有顶部弧形凸面(400),顶部弧形凸面(400)通过衔接凹面(401)分别与上竖直内壁(302)和下倾斜向外内壁(303)连接。
10.根据权利要求1所述的一种纸浆模塑杯盖,其特征在于,所述横向延长部(20)包括平直水平横向部(200)和向上拱起的拱形部(201),平直水平横向部的下表面和拱形部的下表面通过弧形过渡凸面(202)衔接。
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